substantial, so users of MultiMaster Host Adapters may wish to omit
it.
-#
-# This is marked broken because it uses over 4kB of stack in
-# just two routines:
-# 2076 CpqTsProcessIMQEntry
-# 2052 PeekIMQEntry
-#
-config SCSI_CPQFCTS
- tristate "Compaq Fibre Channel 64-bit/66Mhz HBA support"
- depends on PCI && SCSI && BROKEN
- help
- Say Y here to compile in support for the Compaq StorageWorks Fibre
- Channel 64-bit/66Mhz Host Bus Adapter.
-
config SCSI_DMX3191D
tristate "DMX3191D SCSI support"
depends on PCI && SCSI
obj-$(CONFIG_SUN3X_ESP) += NCR53C9x.o sun3x_esp.o
obj-$(CONFIG_SCSI_DEBUG) += scsi_debug.o
obj-$(CONFIG_SCSI_FCAL) += fcal.o
-obj-$(CONFIG_SCSI_CPQFCTS) += cpqfc.o
obj-$(CONFIG_SCSI_LASI700) += 53c700.o lasi700.o
obj-$(CONFIG_SCSI_NSP32) += nsp32.o
obj-$(CONFIG_SCSI_IPR) += ipr.o
CFLAGS_ncr53c8xx.o := $(ncr53c8xx-flags-y) $(ncr53c8xx-flags-m)
zalon7xx-objs := zalon.o ncr53c8xx.o
NCR_Q720_mod-objs := NCR_Q720.o ncr53c8xx.o
-cpqfc-objs := cpqfcTSinit.o cpqfcTScontrol.o cpqfcTSi2c.o \
- cpqfcTSworker.o cpqfcTStrigger.o
libata-objs := libata-core.o libata-scsi.o
# Files generated that shall be removed upon make clean
+++ /dev/null
-#ifndef CPQFCTS_H
-#define CPQFCTS_H
-#include "cpqfcTSstructs.h"
-
-// These functions are required by the Linux SCSI layers
-extern int cpqfcTS_detect(Scsi_Host_Template *);
-extern int cpqfcTS_release(struct Scsi_Host *);
-extern const char * cpqfcTS_info(struct Scsi_Host *);
-extern int cpqfcTS_proc_info(struct Scsi_Host *, char *, char **, off_t, int, int);
-extern int cpqfcTS_queuecommand(Scsi_Cmnd *, void (* done)(Scsi_Cmnd *));
-extern int cpqfcTS_abort(Scsi_Cmnd *);
-extern int cpqfcTS_reset(Scsi_Cmnd *, unsigned int);
-extern int cpqfcTS_eh_abort(Scsi_Cmnd *Cmnd);
-extern int cpqfcTS_eh_device_reset(Scsi_Cmnd *);
-extern int cpqfcTS_biosparam(struct scsi_device *, struct block_device *,
- sector_t, int[]);
-extern int cpqfcTS_ioctl( Scsi_Device *ScsiDev, int Cmnd, void *arg);
-
-#endif /* CPQFCTS_H */
+++ /dev/null
-/* Copyright(c) 2000, Compaq Computer Corporation
- * Fibre Channel Host Bus Adapter
- * 64-bit, 66MHz PCI
- * Originally developed and tested on:
- * (front): [chip] Tachyon TS HPFC-5166A/1.2 L2C1090 ...
- * SP# P225CXCBFIEL6T, Rev XC
- * SP# 161290-001, Rev XD
- * (back): Board No. 010008-001 A/W Rev X5, FAB REV X5
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- * Written by Don Zimmerman
-*/
-#ifndef CPQFCTSCHIP_H
-#define CPQFCTSCHIP_H
-#ifndef TACHYON_CHIP_INC
-
-// FC-PH (Physical) specification levels for Login payloads
-// NOTE: These are NOT strictly complied with by any FC vendors
-
-#define FC_PH42 0x08
-#define FC_PH43 0x09
-#define FC_PH3 0x20
-
-#define TACHLITE_TS_RX_SIZE 1024 // max inbound frame size
-// "I" prefix is for Include
-
-#define IVENDID 0x00 // word
-#define IDEVID 0x02
-#define ITLCFGCMD 0x04
-#define IMEMBASE 0x18 // Tachyon
-#define ITLMEMBASE 0x1C // Tachlite
-#define IIOBASEL 0x10 // Tachyon I/O base address, lower 256 bytes
-#define IIOBASEU 0x14 // Tachyon I/O base address, upper 256 bytes
-#define ITLIOBASEL 0x14 // TachLite I/O base address, lower 256 bytes
-#define ITLIOBASEU 0x18 // TachLite I/O base address, upper 256 bytes
-#define ITLRAMBASE 0x20 // TL on-board RAM start
-#define ISROMBASE 0x24
-#define IROMBASE 0x30
-
-#define ICFGCMD 0x04 // PCI config - PCI config access (word)
-#define ICFGSTAT 0x06 // PCI status (R - word)
-#define IRCTR_WCTR 0x1F2 // ROM control / pre-fetch wait counter
-#define IPCIMCTR 0x1F3 // PCI master control register
-#define IINTPEND 0x1FD // Interrupt pending (I/O Upper - Tachyon & TL)
-#define IINTEN 0x1FE // Interrupt enable (I/O Upper - Tachyon & TL)
-#define IINTSTAT 0x1FF // Interrupt status (I/O Upper - Tachyon & TL)
-
-#define IMQ_BASE 0x80
-#define IMQ_LENGTH 0x84
-#define IMQ_CONSUMER_INDEX 0x88
-#define IMQ_PRODUCER_INDEX 0x8C // Tach copies its INDX to bits 0-7 of value
-
-/*
-// IOBASE UPPER
-#define SFSBQ_BASE 0x00 // single-frame sequences
-#define SFSBQ_LENGTH 0x04
-#define SFSBQ_PRODUCER_INDEX 0x08
-#define SFSBQ_CONSUMER_INDEX 0x0C // (R)
-#define SFS_BUFFER_LENGTH 0X10
- // SCSI-FCP hardware assists
-#define SEST_BASE 0x40 // SSCI Exchange State Table
-#define SEST_LENGTH 0x44
-#define SCSI_BUFFER_LENGTH 0x48
-#define SEST_LINKED_LIST 0x4C
-
-#define TACHYON_My_ID 0x6C
-#define TACHYON_CONFIGURATION 0x84 // (R/W) reset val 2
-#define TACHYON_CONTROL 0x88
-#define TACHYON_STATUS 0x8C // (R)
-#define TACHYON_FLUSH_SEST 0x90 // (R/W)
-#define TACHYON_EE_CREDIT_TMR 0x94 // (R)
-#define TACHYON_BB_CREDIT_TMR 0x98 // (R)
-#define TACHYON_RCV_FRAME_ERR 0x9C // (R)
-#define FRAME_MANAGER_CONFIG 0xC0 // (R/W)
-#define FRAME_MANAGER_CONTROL 0xC4
-#define FRAME_MANAGER_STATUS 0xC8 // (R)
-#define FRAME_MANAGER_ED_TOV 0xCC
-#define FRAME_MANAGER_LINK_ERR1 0xD0 // (R)
-#define FRAME_MANAGER_LINK_ERR2 0xD4 // (R)
-#define FRAME_MANAGER_TIMEOUT2 0xD8 // (W)
-#define FRAME_MANAGER_BB_CREDIT 0xDC // (R)
-#define FRAME_MANAGER_WWN_HI 0xE0 // (R/W)
-#define FRAME_MANAGER_WWN_LO 0xE4 // (R/W)
-#define FRAME_MANAGER_RCV_AL_PA 0xE8 // (R)
-#define FRAME_MANAGER_PRIMITIVE 0xEC // {K28.5} byte1 byte2 byte3
-*/
-
-#define TL_MEM_ERQ_BASE 0x0 //ERQ Base
-#define TL_IO_ERQ_BASE 0x0 //ERQ base
-
-#define TL_MEM_ERQ_LENGTH 0x4 //ERQ Length
-#define TL_IO_ERQ_LENGTH 0x4 //ERQ Length
-
-#define TL_MEM_ERQ_PRODUCER_INDEX 0x8 //ERQ Producer Index register
-#define TL_IO_ERQ_PRODUCER_INDEX 0x8 //ERQ Producer Index register
-
-#define TL_MEM_ERQ_CONSUMER_INDEX_ADR 0xC //ERQ Consumer Index address register
-#define TL_IO_ERQ_CONSUMER_INDEX_ADR 0xC //ERQ Consumer Index address register
-
-#define TL_MEM_ERQ_CONSUMER_INDEX 0xC //ERQ Consumer Index
-#define TL_IO_ERQ_CONSUMER_INDEX 0xC //ERQ Consumer Index
-
-#define TL_MEM_SFQ_BASE 0x50 //SFQ Base
-#define TL_IO_SFQ_BASE 0x50 //SFQ base
-
-#define TL_MEM_SFQ_LENGTH 0x54 //SFQ Length
-#define TL_IO_SFQ_LENGTH 0x54 //SFQ Length
-
-#define TL_MEM_SFQ_CONSUMER_INDEX 0x58 //SFQ Consumer Index
-#define TL_IO_SFQ_CONSUMER_INDEX 0x58 //SFQ Consumer Index
-
-#define TL_MEM_IMQ_BASE 0x80 //IMQ Base
-#define TL_IO_IMQ_BASE 0x80 //IMQ base
-
-#define TL_MEM_IMQ_LENGTH 0x84 //IMQ Length
-#define TL_IO_IMQ_LENGTH 0x84 //IMQ Length
-
-#define TL_MEM_IMQ_CONSUMER_INDEX 0x88 //IMQ Consumer Index
-#define TL_IO_IMQ_CONSUMER_INDEX 0x88 //IMQ Consumer Index
-
-#define TL_MEM_IMQ_PRODUCER_INDEX_ADR 0x8C //IMQ Producer Index address register
-#define TL_IO_IMQ_PRODUCER_INDEX_ADR 0x8C //IMQ Producer Index address register
-
-#define TL_MEM_SEST_BASE 0x140 //SFQ Base
-#define TL_IO_SEST_BASE 0x40 //SFQ base
-
-#define TL_MEM_SEST_LENGTH 0x144 //SFQ Length
-#define TL_IO_SEST_LENGTH 0x44 //SFQ Length
-
-#define TL_MEM_SEST_LINKED_LIST 0x14C
-
-#define TL_MEM_SEST_SG_PAGE 0x168 // Extended Scatter/Gather page size
-
-#define TL_MEM_TACH_My_ID 0x16C
-#define TL_IO_TACH_My_ID 0x6C //My AL_PA ID
-
-#define TL_MEM_TACH_CONFIG 0x184 //Tachlite Configuration register
-#define TL_IO_CONFIG 0x84 //Tachlite Configuration register
-
-#define TL_MEM_TACH_CONTROL 0x188 //Tachlite Control register
-#define TL_IO_CTR 0x88 //Tachlite Control register
-
-#define TL_MEM_TACH_STATUS 0x18C //Tachlite Status register
-#define TL_IO_STAT 0x8C //Tachlite Status register
-
-#define TL_MEM_FM_CONFIG 0x1C0 //Frame Manager Configuration register
-#define TL_IO_FM_CONFIG 0xC0 //Frame Manager Configuration register
-
-#define TL_MEM_FM_CONTROL 0x1C4 //Frame Manager Control
-#define TL_IO_FM_CTL 0xC4 //Frame Manager Control
-
-#define TL_MEM_FM_STATUS 0x1C8 //Frame Manager Status
-#define TL_IO_FM_STAT 0xC8 //Frame Manager Status
-
-#define TL_MEM_FM_LINK_STAT1 0x1D0 //Frame Manager Link Status 1
-#define TL_IO_FM_LINK_STAT1 0xD0 //Frame Manager Link Status 1
-
-#define TL_MEM_FM_LINK_STAT2 0x1D4 //Frame Manager Link Status 2
-#define TL_IO_FM_LINK_STAT2 0xD4 //Frame Manager Link Status 2
-
-#define TL_MEM_FM_TIMEOUT2 0x1D8 // (W)
-
-#define TL_MEM_FM_BB_CREDIT0 0x1DC
-
-#define TL_MEM_FM_WWN_HI 0x1E0 //Frame Manager World Wide Name High
-#define TL_IO_FM_WWN_HI 0xE0 //Frame Manager World Wide Name High
-
-#define TL_MEM_FM_WWN_LO 0x1E4 //Frame Manager World Wide Name LOW
-#define TL_IO_FM_WWN_LO 0xE4 //Frame Manager World Wide Name Low
-
-#define TL_MEM_FM_RCV_AL_PA 0x1E8 //Frame Manager AL_PA Received register
-#define TL_IO_FM_ALPA 0xE8 //Frame Manager AL_PA Received register
-
-#define TL_MEM_FM_ED_TOV 0x1CC
-
-#define TL_IO_ROMCTR 0xFA //TL PCI ROM Control Register
-#define TL_IO_PCIMCTR 0xFB //TL PCI Master Control Register
-#define TL_IO_SOFTRST 0xFC //Tachlite Configuration register
-#define TL_MEM_SOFTRST 0x1FC //Tachlite Configuration register
-
-// completion message types (bit 8 set means Interrupt generated)
-// CM_Type
-#define OUTBOUND_COMPLETION 0
-#define ERROR_IDLE_COMPLETION 0x01
-#define OUT_HI_PRI_COMPLETION 0x01
-#define INBOUND_MFS_COMPLETION 0x02
-#define INBOUND_000_COMPLETION 0x03
-#define INBOUND_SFS_COMPLETION 0x04 // Tachyon & TachLite
-#define ERQ_FROZEN_COMPLETION 0x06 // TachLite
-#define INBOUND_C1_TIMEOUT 0x05
-#define INBOUND_BUSIED_FRAME 0x06
-#define SFS_BUF_WARN 0x07
-#define FCP_FROZEN_COMPLETION 0x07 // TachLite
-#define MFS_BUF_WARN 0x08
-#define IMQ_BUF_WARN 0x09
-#define FRAME_MGR_INTERRUPT 0x0A
-#define READ_STATUS 0x0B
-#define INBOUND_SCSI_DATA_COMPLETION 0x0C
-#define INBOUND_FCP_XCHG_COMPLETION 0x0C // TachLite
-#define INBOUND_SCSI_DATA_COMMAND 0x0D
-#define BAD_SCSI_FRAME 0x0E
-#define INB_SCSI_STATUS_COMPLETION 0x0F
-#define BUFFER_PROCESSED_COMPLETION 0x11
-
-// FC-AL (Tachyon) Loop Port State Machine defs
-// (loop "Up" states)
-#define MONITORING 0x0
-#define ARBITRATING 0x1
-#define ARBITRAT_WON 0x2
-#define OPEN 0x3
-#define OPENED 0x4
-#define XMITTD_CLOSE 0x5
-#define RCVD_CLOSE 0x6
-#define TRANSFER 0x7
-
-// (loop "Down" states)
-#define INITIALIZING 0x8
-#define O_I_INIT 0x9
-#define O_I_PROTOCOL 0xa
-#define O_I_LIP_RCVD 0xb
-#define HOST_CONTROL 0xc
-#define LOOP_FAIL 0xd
-// (no 0xe)
-#define OLD_PORT 0xf
-
-
-
-#define TACHYON_CHIP_INC
-#endif
-#endif /* CPQFCTSCHIP_H */
+++ /dev/null
-/* Copyright 2000, Compaq Computer Corporation
- * Fibre Channel Host Bus Adapter
- * 64-bit, 66MHz PCI
- * Originally developed and tested on:
- * (front): [chip] Tachyon TS HPFC-5166A/1.2 L2C1090 ...
- * SP# P225CXCBFIEL6T, Rev XC
- * SP# 161290-001, Rev XD
- * (back): Board No. 010008-001 A/W Rev X5, FAB REV X5
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- * Written by Don Zimmerman
-*/
-/* These functions control the host bus adapter (HBA) hardware. The main chip
- control takes place in the interrupt handler where we process the IMQ
- (Inbound Message Queue). The IMQ is Tachyon's way of communicating FC link
- events and state information to the driver. The Single Frame Queue (SFQ)
- buffers incoming FC frames for processing by the driver. References to
- "TL/TS UG" are for:
- "HP HPFC-5100/5166 Tachyon TL/TS ICs User Guide", August 16, 1999, 1st Ed.
- Hewlitt Packard Manual Part Number 5968-1083E.
-*/
-
-#define LinuxVersionCode(v, p, s) (((v)<<16)+((p)<<8)+(s))
-
-#include <linux/blkdev.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/ioport.h> // request_region() prototype
-#include <linux/sched.h>
-#include <linux/slab.h> // need "kfree" for ext. S/G pages
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/delay.h>
-#include <linux/unistd.h>
-#include <asm/io.h> // struct pt_regs for IRQ handler & Port I/O
-#include <asm/irq.h>
-#include <linux/spinlock.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h> // Scsi_Host definition for INT handler
-#include "cpqfcTSchip.h"
-#include "cpqfcTSstructs.h"
-
-//#define IMQ_DEBUG 1
-
-static void fcParseLinkStatusCounters(TACHYON * fcChip);
-static void CpqTsGetSFQEntry(TACHYON * fcChip,
- USHORT pi, ULONG * buffr, BOOLEAN UpdateChip);
-
-static void
-cpqfc_free_dma_consistent(CPQFCHBA *cpqfcHBAdata)
-{
- // free up the primary EXCHANGES struct and Link Q
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
-
- if (fcChip->Exchanges != NULL)
- pci_free_consistent(cpqfcHBAdata->PciDev, sizeof(FC_EXCHANGES),
- fcChip->Exchanges, fcChip->exch_dma_handle);
- fcChip->Exchanges = NULL;
- if (cpqfcHBAdata->fcLQ != NULL)
- pci_free_consistent(cpqfcHBAdata->PciDev, sizeof(FC_LINK_QUE),
- cpqfcHBAdata->fcLQ, cpqfcHBAdata->fcLQ_dma_handle);
- cpqfcHBAdata->fcLQ = NULL;
-}
-
-// Note special requirements for Q alignment! (TL/TS UG pg. 190)
-// We place critical index pointers at end of QUE elements to assist
-// in non-symbolic (i.e. memory dump) debugging
-// opcode defines placement of Queues (e.g. local/external RAM)
-
-int CpqTsCreateTachLiteQues( void* pHBA, int opcode)
-{
- CPQFCHBA *cpqfcHBAdata = (CPQFCHBA*)pHBA;
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
-
- int iStatus=0;
- unsigned long ulAddr;
- dma_addr_t ERQdma, IMQdma, SPQdma, SESTdma;
- int i;
-
- // NOTE! fcMemManager() will return system virtual addresses.
- // System (kernel) virtual addresses, though non-paged, still
- // aren't physical addresses. Convert to PHYSICAL_ADDRESS for Tachyon's
- // DMA use.
- ENTER("CreateTachLiteQues");
-
-
- // Allocate primary EXCHANGES array...
- fcChip->Exchanges = NULL;
- cpqfcHBAdata->fcLQ = NULL;
-
- /* printk("Allocating %u for %u Exchanges ",
- (ULONG)sizeof(FC_EXCHANGES), TACH_MAX_XID); */
- fcChip->Exchanges = pci_alloc_consistent(cpqfcHBAdata->PciDev,
- sizeof(FC_EXCHANGES), &fcChip->exch_dma_handle);
- /* printk("@ %p\n", fcChip->Exchanges); */
-
- if( fcChip->Exchanges == NULL ) // fatal error!!
- {
- printk("pci_alloc_consistent failure on Exchanges: fatal error\n");
- return -1;
- }
- // zero out the entire EXCHANGE space
- memset( fcChip->Exchanges, 0, sizeof( FC_EXCHANGES));
-
-
- /* printk("Allocating %u for LinkQ ", (ULONG)sizeof(FC_LINK_QUE)); */
- cpqfcHBAdata->fcLQ = pci_alloc_consistent(cpqfcHBAdata->PciDev,
- sizeof( FC_LINK_QUE), &cpqfcHBAdata->fcLQ_dma_handle);
- /* printk("@ %p (%u elements)\n", cpqfcHBAdata->fcLQ, FC_LINKQ_DEPTH); */
-
- if( cpqfcHBAdata->fcLQ == NULL ) // fatal error!!
- {
- cpqfc_free_dma_consistent(cpqfcHBAdata);
- printk("pci_alloc_consistent() failure on fc Link Que: fatal error\n");
- return -1;
- }
- // zero out the entire EXCHANGE space
- memset( cpqfcHBAdata->fcLQ, 0, sizeof( FC_LINK_QUE));
-
- // Verify that basic Tach I/O registers are not NULL
- if( !fcChip->Registers.ReMapMemBase )
- {
- cpqfc_free_dma_consistent(cpqfcHBAdata);
- printk("HBA base address NULL: fatal error\n");
- return -1;
- }
-
-
- // Initialize the fcMemManager memory pairs (stores allocated/aligned
- // pairs for future freeing)
- memset( cpqfcHBAdata->dynamic_mem, 0, sizeof(cpqfcHBAdata->dynamic_mem));
-
-
- // Allocate Tach's Exchange Request Queue (each ERQ entry 32 bytes)
-
- fcChip->ERQ = fcMemManager( cpqfcHBAdata->PciDev,
- &cpqfcHBAdata->dynamic_mem[0],
- sizeof( TachLiteERQ ), 32*(ERQ_LEN), 0L, &ERQdma);
- if( !fcChip->ERQ )
- {
- cpqfc_free_dma_consistent(cpqfcHBAdata);
- printk("pci_alloc_consistent/alignment failure on ERQ: fatal error\n");
- return -1;
- }
- fcChip->ERQ->length = ERQ_LEN-1;
- ulAddr = (ULONG) ERQdma;
-#if BITS_PER_LONG > 32
- if( (ulAddr >> 32) )
- {
- cpqfc_free_dma_consistent(cpqfcHBAdata);
- printk(" FATAL! ERQ ptr %p exceeds Tachyon's 32-bit register size\n",
- (void*)ulAddr);
- return -1; // failed
- }
-#endif
- fcChip->ERQ->base = (ULONG)ulAddr; // copy for quick reference
-
-
- // Allocate Tach's Inbound Message Queue (32 bytes per entry)
-
- fcChip->IMQ = fcMemManager( cpqfcHBAdata->PciDev,
- &cpqfcHBAdata->dynamic_mem[0],
- sizeof( TachyonIMQ ), 32*(IMQ_LEN), 0L, &IMQdma );
- if( !fcChip->IMQ )
- {
- cpqfc_free_dma_consistent(cpqfcHBAdata);
- printk("pci_alloc_consistent/alignment failure on IMQ: fatal error\n");
- return -1;
- }
- fcChip->IMQ->length = IMQ_LEN-1;
-
- ulAddr = IMQdma;
-#if BITS_PER_LONG > 32
- if( (ulAddr >> 32) )
- {
- cpqfc_free_dma_consistent(cpqfcHBAdata);
- printk(" FATAL! IMQ ptr %p exceeds Tachyon's 32-bit register size\n",
- (void*)ulAddr);
- return -1; // failed
- }
-#endif
- fcChip->IMQ->base = (ULONG)ulAddr; // copy for quick reference
-
-
- // Allocate Tach's Single Frame Queue (64 bytes per entry)
- fcChip->SFQ = fcMemManager( cpqfcHBAdata->PciDev,
- &cpqfcHBAdata->dynamic_mem[0],
- sizeof( TachLiteSFQ ), 64*(SFQ_LEN),0L, &SPQdma );
- if( !fcChip->SFQ )
- {
- cpqfc_free_dma_consistent(cpqfcHBAdata);
- printk("pci_alloc_consistent/alignment failure on SFQ: fatal error\n");
- return -1;
- }
- fcChip->SFQ->length = SFQ_LEN-1; // i.e. Que length [# entries -
- // min. 32; max. 4096 (0xffff)]
-
- ulAddr = SPQdma;
-#if BITS_PER_LONG > 32
- if( (ulAddr >> 32) )
- {
- cpqfc_free_dma_consistent(cpqfcHBAdata);
- printk(" FATAL! SFQ ptr %p exceeds Tachyon's 32-bit register size\n",
- (void*)ulAddr);
- return -1; // failed
- }
-#endif
- fcChip->SFQ->base = (ULONG)ulAddr; // copy for quick reference
-
-
- // Allocate SCSI Exchange State Table; aligned nearest @sizeof
- // power-of-2 boundary
- // LIVE DANGEROUSLY! Assume the boundary for SEST mem will
- // be on physical page (e.g. 4k) boundary.
- /* printk("Allocating %u for TachSEST for %u Exchanges\n",
- (ULONG)sizeof(TachSEST), TACH_SEST_LEN); */
- fcChip->SEST = fcMemManager( cpqfcHBAdata->PciDev,
- &cpqfcHBAdata->dynamic_mem[0],
- sizeof(TachSEST), 4, 0L, &SESTdma );
-// sizeof(TachSEST), 64*TACH_SEST_LEN, 0L );
- if( !fcChip->SEST )
- {
- cpqfc_free_dma_consistent(cpqfcHBAdata);
- printk("pci_alloc_consistent/alignment failure on SEST: fatal error\n");
- return -1;
- }
-
- for( i=0; i < TACH_SEST_LEN; i++) // for each exchange
- fcChip->SEST->sgPages[i] = NULL;
-
- fcChip->SEST->length = TACH_SEST_LEN; // e.g. DON'T subtract one
- // (TL/TS UG, pg 153)
-
- ulAddr = SESTdma;
-#if BITS_PER_LONG > 32
- if( (ulAddr >> 32) )
- {
- cpqfc_free_dma_consistent(cpqfcHBAdata);
- printk(" FATAL! SFQ ptr %p exceeds Tachyon's 32-bit register size\n",
- (void*)ulAddr);
- return -1; // failed
- }
-#endif
- fcChip->SEST->base = (ULONG)ulAddr; // copy for quick reference
-
-
- // Now that structures are defined,
- // fill in Tachyon chip registers...
-
- // EEEEEEEE EXCHANGE REQUEST QUEUE
-
- writel( fcChip->ERQ->base,
- (fcChip->Registers.ReMapMemBase + TL_MEM_ERQ_BASE));
-
- writel( fcChip->ERQ->length,
- (fcChip->Registers.ReMapMemBase + TL_MEM_ERQ_LENGTH));
-
-
- fcChip->ERQ->producerIndex = 0L;
- writel( fcChip->ERQ->producerIndex,
- (fcChip->Registers.ReMapMemBase + TL_MEM_ERQ_PRODUCER_INDEX));
-
-
- // NOTE! write consumer index last, since the write
- // causes Tachyon to process the other registers
-
- ulAddr = ((unsigned long)&fcChip->ERQ->consumerIndex -
- (unsigned long)fcChip->ERQ) + (unsigned long) ERQdma;
-
- // NOTE! Tachyon DMAs to the ERQ consumer Index host
- // address; must be correctly aligned
- writel( (ULONG)ulAddr,
- (fcChip->Registers.ReMapMemBase + TL_MEM_ERQ_CONSUMER_INDEX_ADR));
-
-
-
- // IIIIIIIIIIIII INBOUND MESSAGE QUEUE
- // Tell Tachyon where the Que starts
-
- // set the Host's pointer for Tachyon to access
-
- /* printk(" cpqfcTS: writing IMQ BASE %Xh ", fcChip->IMQ->base ); */
- writel( fcChip->IMQ->base,
- (fcChip->Registers.ReMapMemBase + IMQ_BASE));
-
- writel( fcChip->IMQ->length,
- (fcChip->Registers.ReMapMemBase + IMQ_LENGTH));
-
- writel( fcChip->IMQ->consumerIndex,
- (fcChip->Registers.ReMapMemBase + IMQ_CONSUMER_INDEX));
-
-
- // NOTE: TachLite DMAs to the producerIndex host address
- // must be correctly aligned with address bits 1-0 cleared
- // Writing the BASE register clears the PI register, so write it last
- ulAddr = ((unsigned long)&fcChip->IMQ->producerIndex -
- (unsigned long)fcChip->IMQ) + (unsigned long) IMQdma;
-
-#if BITS_PER_LONG > 32
- if( (ulAddr >> 32) )
- {
- cpqfc_free_dma_consistent(cpqfcHBAdata);
- printk(" FATAL! IMQ ptr %p exceeds Tachyon's 32-bit register size\n",
- (void*)ulAddr);
- return -1; // failed
- }
-#endif
-#if DBG
- printk(" PI %Xh\n", (ULONG)ulAddr );
-#endif
- writel( (ULONG)ulAddr,
- (fcChip->Registers.ReMapMemBase + IMQ_PRODUCER_INDEX));
-
-
-
- // SSSSSSSSSSSSSSS SINGLE FRAME SEQUENCE
- // Tell TachLite where the Que starts
-
- writel( fcChip->SFQ->base,
- (fcChip->Registers.ReMapMemBase + TL_MEM_SFQ_BASE));
-
- writel( fcChip->SFQ->length,
- (fcChip->Registers.ReMapMemBase + TL_MEM_SFQ_LENGTH));
-
-
- // tell TachLite where SEST table is & how long
- writel( fcChip->SEST->base,
- (fcChip->Registers.ReMapMemBase + TL_MEM_SEST_BASE));
-
- /* printk(" cpqfcTS: SEST %p(virt): Wrote base %Xh @ %p\n",
- fcChip->SEST, fcChip->SEST->base,
- fcChip->Registers.ReMapMemBase + TL_MEM_SEST_BASE); */
-
- writel( fcChip->SEST->length,
- (fcChip->Registers.ReMapMemBase + TL_MEM_SEST_LENGTH));
-
- writel( (TL_EXT_SG_PAGE_COUNT-1),
- (fcChip->Registers.ReMapMemBase + TL_MEM_SEST_SG_PAGE));
-
-
- LEAVE("CreateTachLiteQues");
-
- return iStatus;
-}
-
-
-
-// function to return TachLite to Power On state
-// 1st - reset tachyon ('SOFT' reset)
-// others - future
-
-int CpqTsResetTachLite(void *pHBA, int type)
-{
- CPQFCHBA *cpqfcHBAdata = (CPQFCHBA*)pHBA;
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- ULONG ulBuff, i;
- int ret_status=0; // def. success
-
- ENTER("ResetTach");
-
- switch(type)
- {
-
- case CLEAR_FCPORTS:
-
- // in case he was running previously, mask Tach's interrupt
- writeb( 0, (fcChip->Registers.ReMapMemBase + IINTEN));
-
- // de-allocate mem for any Logged in ports
- // (e.g., our module is unloading)
- // search the forward linked list, de-allocating
- // the memory we allocated when the port was initially logged in
- {
- PFC_LOGGEDIN_PORT pLoggedInPort = fcChip->fcPorts.pNextPort;
- PFC_LOGGEDIN_PORT ptr;
-// printk("checking for allocated LoggedInPorts...\n");
-
- while( pLoggedInPort )
- {
- ptr = pLoggedInPort;
- pLoggedInPort = ptr->pNextPort;
-// printk("kfree(%p) on FC LoggedInPort port_id 0x%06lX\n",
-// ptr, ptr->port_id);
- kfree( ptr );
- }
- }
- // (continue resetting hardware...)
-
- case 1: // RESTART Tachyon (power-up state)
-
- // in case he was running previously, mask Tach's interrupt
- writeb( 0, (fcChip->Registers.ReMapMemBase + IINTEN));
- // turn OFF laser (NOTE: laser is turned
- // off during reset, because GPIO4 is cleared
- // to 0 by reset action - see TLUM, sec 7.22)
- // However, CPQ 64-bit HBAs have a "health
- // circuit" which keeps laser ON for a brief
- // period after it is turned off ( < 1s)
-
- fcChip->LaserControl( fcChip->Registers.ReMapMemBase, 0);
-
-
-
- // soft reset timing constraints require:
- // 1. set RST to 1
- // 2. read SOFTRST register
- // (128 times per R. Callison code)
- // 3. clear PCI ints
- // 4. clear RST to 0
- writel( 0xff000001L,
- (fcChip->Registers.ReMapMemBase + TL_MEM_SOFTRST));
-
- for( i=0; i<128; i++)
- ulBuff = readl( fcChip->Registers.ReMapMemBase + TL_MEM_SOFTRST);
-
- // clear the soft reset
- for( i=0; i<8; i++)
- writel( 0, (fcChip->Registers.ReMapMemBase + TL_MEM_SOFTRST));
-
-
-
- // clear out our copy of Tach regs,
- // because they must be invalid now,
- // since TachLite reset all his regs.
- CpqTsDestroyTachLiteQues(cpqfcHBAdata,0); // remove Host-based Que structs
- cpqfcTSClearLinkStatusCounters(fcChip); // clear our s/w accumulators
- // lower bits give GBIC info
- fcChip->Registers.TYstatus.value =
- readl( fcChip->Registers.TYstatus.address );
- break;
-
-/*
- case 2: // freeze SCSI
- case 3: // reset Outbound command que (ERQ)
- case 4: // unfreeze OSM (Outbound Seq. Man.) 'er'
- case 5: // report status
-
- break;
-*/
- default:
- ret_status = -1; // invalid option passed to RESET function
- break;
- }
- LEAVE("ResetTach");
- return ret_status;
-}
-
-
-
-
-
-
-// 'addrBase' is IOBaseU for both TachLite and (older) Tachyon
-int CpqTsLaserControl( void* addrBase, int opcode )
-{
- ULONG dwBuff;
-
- dwBuff = readl((addrBase + TL_MEM_TACH_CONTROL) ); // read TL Control reg
- // (change only bit 4)
- if( opcode == 1)
- dwBuff |= ~0xffffffefL; // set - ON
- else
- dwBuff &= 0xffffffefL; // clear - OFF
- writel( dwBuff, (addrBase + TL_MEM_TACH_CONTROL)); // write TL Control reg
- return 0;
-}
-
-
-
-
-
-// Use controller's "Options" field to determine loopback mode (if any)
-// internal loopback (silicon - no GBIC)
-// external loopback (GBIC - no FC loop)
-// no loopback: L_PORT, external cable from GBIC required
-
-int CpqTsInitializeFrameManager( void *pChip, int opcode)
-{
- PTACHYON fcChip;
- int iStatus;
- ULONG wwnLo, wwnHi; // for readback verification
-
- ENTER("InitializeFrameManager");
- fcChip = (PTACHYON)pChip;
- if( !fcChip->Registers.ReMapMemBase ) // undefined controller?
- return -1;
-
- // TL/TS UG, pg. 184
- // 0x0065 = 100ms for RT_TOV
- // 0x01f5 = 500ms for ED_TOV
- // 0x07D1 = 2000ms
- fcChip->Registers.ed_tov.value = 0x006507D1;
- writel( fcChip->Registers.ed_tov.value,
- (fcChip->Registers.ed_tov.address));
-
-
- // Set LP_TOV to the FC-AL2 specified 2 secs.
- // TL/TS UG, pg. 185
- writel( 0x07d00010, fcChip->Registers.ReMapMemBase +TL_MEM_FM_TIMEOUT2);
-
-
- // Now try to read the WWN from the adapter's NVRAM
- iStatus = CpqTsReadWriteWWN( fcChip, 1); // '1' for READ
-
- if( iStatus ) // NVRAM read failed?
- {
- printk(" WARNING! HBA NVRAM WWN read failed - make alias\n");
- // make up a WWN. If NULL or duplicated on loop, FC loop may hang!
-
-
- fcChip->Registers.wwn_hi = (__u32)jiffies;
- fcChip->Registers.wwn_hi |= 0x50000000L;
- fcChip->Registers.wwn_lo = 0x44556677L;
- }
-
-
- writel( fcChip->Registers.wwn_hi,
- fcChip->Registers.ReMapMemBase + TL_MEM_FM_WWN_HI);
-
- writel( fcChip->Registers.wwn_lo,
- fcChip->Registers.ReMapMemBase + TL_MEM_FM_WWN_LO);
-
-
- // readback for verification:
- wwnHi = readl( fcChip->Registers.ReMapMemBase + TL_MEM_FM_WWN_HI );
-
- wwnLo = readl( fcChip->Registers.ReMapMemBase + TL_MEM_FM_WWN_LO);
- // test for correct chip register WRITE/READ
- DEBUG_PCI( printk(" WWN %08X%08X\n",
- fcChip->Registers.wwn_hi, fcChip->Registers.wwn_lo ) );
-
- if( wwnHi != fcChip->Registers.wwn_hi ||
- wwnLo != fcChip->Registers.wwn_lo )
- {
- printk( "cpqfcTS: WorldWideName register load failed\n");
- return -1; // FAILED!
- }
-
-
-
- // set Frame Manager Initialize command
- fcChip->Registers.FMcontrol.value = 0x06;
-
- // Note: for test/debug purposes, we may use "Hard" address,
- // but we completely support "soft" addressing, including
- // dynamically changing our address.
- if( fcChip->Options.intLoopback == 1 ) // internal loopback
- fcChip->Registers.FMconfig.value = 0x0f002080L;
- else if( fcChip->Options.extLoopback == 1 ) // internal loopback
- fcChip->Registers.FMconfig.value = 0x0f004080L;
- else // L_Port
- fcChip->Registers.FMconfig.value = 0x55000100L; // hard address (55h start)
-// fcChip->Registers.FMconfig.value = 0x01000080L; // soft address (can't pick)
-// fcChip->Registers.FMconfig.value = 0x55000100L; // hard address (55h start)
-
- // write config to FM
-
- if( !fcChip->Options.intLoopback && !fcChip->Options.extLoopback )
- // (also need LASER for real LOOP)
- fcChip->LaserControl( fcChip->Registers.ReMapMemBase, 1); // turn on LASER
-
- writel( fcChip->Registers.FMconfig.value,
- fcChip->Registers.FMconfig.address);
-
-
- // issue INITIALIZE command to FM - ACTION!
- writel( fcChip->Registers.FMcontrol.value,
- fcChip->Registers.FMcontrol.address);
-
- LEAVE("InitializeFrameManager");
-
- return 0;
-}
-
-
-
-
-
-// This "look ahead" function examines the IMQ for occurrence of
-// "type". Returns 1 if found, 0 if not.
-static int PeekIMQEntry( PTACHYON fcChip, ULONG type)
-{
- ULONG CI = fcChip->IMQ->consumerIndex;
- ULONG PI = fcChip->IMQ->producerIndex; // snapshot of IMQ indexes
-
- while( CI != PI )
- { // proceed with search
- if( (++CI) >= IMQ_LEN ) CI = 0; // rollover check
-
- switch( type )
- {
- case ELS_LILP_FRAME:
- {
- // first, we need to find an Inbound Completion message,
- // If we find it, check the incoming frame payload (1st word)
- // for LILP frame
- if( (fcChip->IMQ->QEntry[CI].type & 0x1FF) == 0x104 )
- {
- TachFCHDR_GCMND* fchs;
-#error This is too much stack
- ULONG ulFibreFrame[2048/4]; // max DWORDS in incoming FC Frame
- USHORT SFQpi = (USHORT)(fcChip->IMQ->QEntry[CI].word[0] & 0x0fffL);
-
- CpqTsGetSFQEntry( fcChip,
- SFQpi, // SFQ producer ndx
- ulFibreFrame, // contiguous dest. buffer
- FALSE); // DON'T update chip--this is a "lookahead"
-
- fchs = (TachFCHDR_GCMND*)&ulFibreFrame;
- if( fchs->pl[0] == ELS_LILP_FRAME)
- {
- return 1; // found the LILP frame!
- }
- else
- {
- // keep looking...
- }
- }
- }
- break;
-
- case OUTBOUND_COMPLETION:
- if( (fcChip->IMQ->QEntry[CI].type & 0x1FF) == 0x00 )
- {
-
- // any OCM errors?
- if( fcChip->IMQ->QEntry[CI].word[2] & 0x7a000000L )
- return 1; // found OCM error
- }
- break;
-
-
-
- default:
- break;
- }
- }
- return 0; // failed to find "type"
-}
-
-
-static void SetTachTOV( CPQFCHBA* cpqfcHBAdata)
-{
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
-
- // TL/TS UG, pg. 184
- // 0x0065 = 100ms for RT_TOV
- // 0x01f5 = 500ms for ED_TOV
- // 0x07d1 = 2000ms for ED_TOV
-
- // SANMark Level 1 requires an "initialization backoff"
- // (See "SANMark Test Suite Level 1":
- // initialization_timeout.fcal.SANMark-1.fc)
- // We have to use 2sec, 24sec, then 128sec when login/
- // port discovery processes fail to complete.
-
- // when port discovery completes (logins done), we set
- // ED_TOV to 500ms -- this is the normal operational case
- // On the first Link Down, we'll move to 2 secs (7D1 ms)
- if( (fcChip->Registers.ed_tov.value &0xFFFF) <= 0x1f5)
- fcChip->Registers.ed_tov.value = 0x006507D1;
-
- // If we get another LST after we moved TOV to 2 sec,
- // increase to 24 seconds (5DC1 ms) per SANMark!
- else if( (fcChip->Registers.ed_tov.value &0xFFFF) <= 0x7D1)
- fcChip->Registers.ed_tov.value = 0x00655DC1;
-
- // If we get still another LST, set the max TOV (Tachyon
- // has only 16 bits for ms timer, so the max is 65.5 sec)
- else if( (fcChip->Registers.ed_tov.value &0xFFFF) <= 0x5DC1)
- fcChip->Registers.ed_tov.value = 0x0065FFFF;
-
- writel( fcChip->Registers.ed_tov.value,
- (fcChip->Registers.ed_tov.address));
- // keep the same 2sec LP_TOV
- writel( 0x07D00010, fcChip->Registers.ReMapMemBase +TL_MEM_FM_TIMEOUT2);
-}
-
-
-// The IMQ is an array with IMQ_LEN length, each element (QEntry)
-// with eight 32-bit words. Tachyon PRODUCES a QEntry with each
-// message it wants to send to the host. The host CONSUMES IMQ entries
-
-// This function copies the current
-// (or oldest not-yet-processed) QEntry to
-// the caller, clears/ re-enables the interrupt, and updates the
-// (Host) Consumer Index.
-// Return value:
-// 0 message processed, none remain (producer and consumer
-// indexes match)
-// 1 message processed, more messages remain
-// -1 no message processed - none were available to process
-// Remarks:
-// TL/TS UG specifices that the following actions for
-// INTA_L handling:
-// 1. read PCI Interrupt Status register (0xff)
-// 2. all IMQ messages should be processed before writing the
-// IMQ consumer index.
-
-
-int CpqTsProcessIMQEntry(void *host)
-{
- struct Scsi_Host *HostAdapter = (struct Scsi_Host *)host;
- CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- int iStatus;
- USHORT i, RPCset, DPCset;
- ULONG x_ID;
- ULONG ulBuff, dwStatus;
- TachFCHDR_GCMND* fchs;
-#error This is too much stack
- ULONG ulFibreFrame[2048/4]; // max number of DWORDS in incoming Fibre Frame
- UCHAR ucInboundMessageType; // Inbound CM, dword 3 "type" field
-
- ENTER("ProcessIMQEntry");
-
-
- // check TachLite's IMQ producer index -
- // is a new message waiting for us?
- // equal indexes means empty que
-
- if( fcChip->IMQ->producerIndex != fcChip->IMQ->consumerIndex )
- { // need to process message
-
-
-#ifdef IMQ_DEBUG
- printk("PI %X, CI %X type: %X\n",
- fcChip->IMQ->producerIndex,fcChip->IMQ->consumerIndex,
- fcChip->IMQ->QEntry[fcChip->IMQ->consumerIndex].type);
-#endif
- // Examine Completion Messages in IMQ
- // what CM_Type?
- switch( (UCHAR)(fcChip->IMQ->QEntry[fcChip->IMQ->consumerIndex].type
- & 0xffL) )
- {
- case OUTBOUND_COMPLETION:
-
- // Remarks:
- // x_IDs (OX_ID, RX_ID) are partitioned by SEST entries
- // (starting at 0), and SFS entries (starting at
- // SEST_LEN -- outside the SEST space).
- // Psuedo code:
- // x_ID (OX_ID or RX_ID) from message is Trans_ID or SEST index
- // range check - x_ID
- // if x_ID outside 'Transactions' length, error - exit
- // if any OCM error, copy error status to Exchange slot
- // if FCP ASSIST transaction (x_ID within SEST),
- // call fcComplete (to App)
- // ...
-
-
- ulBuff = fcChip->IMQ->QEntry[fcChip->IMQ->consumerIndex].word[1];
- x_ID = ulBuff & 0x7fffL; // lower 14 bits SEST_Index/Trans_ID
- // Range check CM OX/RX_ID value...
- if( x_ID < TACH_MAX_XID ) // don't go beyond array space
- {
-
-
- if( ulBuff & 0x20000000L ) // RPC -Response Phase Complete?
- RPCset = 1; // (SEST transactions only)
- else
- RPCset = 0;
-
- if( ulBuff & 0x40000000L ) // DPC -Data Phase Complete?
- DPCset = 1; // (SEST transactions only)
- else
- DPCset = 0;
- // set the status for this Outbound transaction's ID
- dwStatus = 0L;
- if( ulBuff & 0x10000000L ) // SPE? (SEST Programming Error)
- dwStatus |= SESTPROG_ERR;
-
- ulBuff = fcChip->IMQ->QEntry[fcChip->IMQ->consumerIndex].word[2];
- if( ulBuff & 0x7a000000L ) // any other errs?
- {
- if( ulBuff & 0x40000000L )
- dwStatus |= INV_ENTRY;
- if( ulBuff & 0x20000000L )
- dwStatus |= FRAME_TO; // FTO
- if( ulBuff & 0x10000000L )
- dwStatus |= HOSTPROG_ERR;
- if( ulBuff & 0x08000000L )
- dwStatus |= LINKFAIL_TX;
- if( ulBuff & 0x02000000L )
- dwStatus |= ABORTSEQ_NOTIFY; // ASN
- }
-
-
- if( dwStatus ) // any errors?
- {
- // set the Outbound Completion status
- Exchanges->fcExchange[ x_ID ].status |= dwStatus;
-
- // if this Outbound frame was for a SEST entry, automatically
- // reque it in the case of LINKFAIL (it will restart on PDISC)
- if( x_ID < TACH_SEST_LEN )
- {
-
- printk(" #OCM error %Xh x_ID %X# ",
- dwStatus, x_ID);
-
- Exchanges->fcExchange[x_ID].timeOut = 30000; // seconds default
-
-
- // We Q ABTS for each exchange.
- // NOTE: We can get FRAME_TO on bad alpa (device gone). Since
- // bad alpa is reported before FRAME_TO, examine the status
- // flags to see if the device is removed. If so, DON'T
- // post an ABTS, since it will be terminated by the bad alpa
- // message.
- if( dwStatus & FRAME_TO ) // check for device removed...
- {
- if( !(Exchanges->fcExchange[x_ID].status & DEVICE_REMOVED) )
- {
- // presumes device is still there: send ABTS.
-
- cpqfcTSPutLinkQue( cpqfcHBAdata, BLS_ABTS, &x_ID);
- }
- }
- else // Abort all other errors
- {
- cpqfcTSPutLinkQue( cpqfcHBAdata, BLS_ABTS, &x_ID);
- }
-
- // if the HPE bit is set, we have to CLose the LOOP
- // (see TL/TS UG, pg. 239)
-
- if( dwStatus &= HOSTPROG_ERR )
- // set CL bit (see TL/TS UG, pg. 172)
- writel( 4, fcChip->Registers.FMcontrol.address);
- }
- }
- // NOTE: we don't necessarily care about ALL completion messages...
- // SCSI resp. complete OR
- if( ((x_ID < TACH_SEST_LEN) && RPCset)||
- (x_ID >= TACH_SEST_LEN) ) // non-SCSI command
- {
- // exchange done; complete to upper levels with status
- // (if necessary) and free the exchange slot
-
-
- if( x_ID >= TACH_SEST_LEN ) // Link Service Outbound frame?
- // A Request or Reply has been sent
- { // signal waiting WorkerThread
-
- up( cpqfcHBAdata->TYOBcomplete); // frame is OUT of Tach
-
- // WorkerThread will complete Xchng
- }
- else // X_ID is for FCP assist (SEST)
- {
- // TBD (target mode)
-// fcCompleteExchange( fcChip, x_ID); // TRE completed
- }
- }
- }
- else // ERROR CONDITION! bogus x_ID in completion message
- {
-
- printk(" ProcessIMQ (OBCM) x_id out of range %Xh\n", x_ID);
-
- }
-
-
-
- // Load the Frame Manager's error counters. We check them here
- // because presumably the link is up and healthy enough for the
- // counters to be meaningful (i.e., don't check them while loop
- // is initializing).
- fcChip->Registers.FMLinkStatus1.value = // get TL's counter
- readl(fcChip->Registers.FMLinkStatus1.address);
-
- fcChip->Registers.FMLinkStatus2.value = // get TL's counter
- readl(fcChip->Registers.FMLinkStatus2.address);
-
-
- fcParseLinkStatusCounters( fcChip); // load into 6 s/w accumulators
- break;
-
-
-
- case ERROR_IDLE_COMPLETION: // TachLite Error Idle...
-
- // We usually get this when the link goes down during heavy traffic.
- // For now, presume that if SEST Exchanges are open, we will
- // get this as our cue to INVALIDATE all SEST entries
- // (and we OWN all the SEST entries).
- // See TL/TS UG, pg. 53
-
- for( x_ID = 0; x_ID < TACH_SEST_LEN; x_ID++)
- {
-
- // Does this VALid SEST entry need to be invalidated for Abort?
- fcChip->SEST->u[ x_ID].IWE.Hdr_Len &= 0x7FFFFFFF;
- }
-
- CpqTsUnFreezeTachlite( fcChip, 2); // unfreeze Tachyon, if Link OK
-
- break;
-
-
- case INBOUND_SFS_COMPLETION: //0x04
- // NOTE! we must process this SFQ message to avoid SFQ filling
- // up and stopping TachLite. Incoming commands are placed here,
- // as well as 'unknown' frames (e.g. LIP loop position data)
- // write this CM's producer index to global...
- // TL/TS UG, pg 234:
- // Type: 0 - reserved
- // 1 - Unassisted FCP
- // 2 - BAD FCP
- // 3 - Unkown Frame
- // 4-F reserved
-
-
- fcChip->SFQ->producerIndex = (USHORT)
- (fcChip->IMQ->QEntry[fcChip->IMQ->consumerIndex].word[0] & 0x0fffL);
-
-
- ucInboundMessageType = 0; // default to useless frame
-
- // we can only process two Types: 1, Unassisted FCP, and 3, Unknown
- // Also, we aren't interested in processing frame fragments
- // so don't Que anything with 'LKF' bit set
- if( !(fcChip->IMQ->QEntry[fcChip->IMQ->consumerIndex].word[2]
- & 0x40000000) ) // 'LKF' link failure bit clear?
- {
- ucInboundMessageType = (UCHAR) // ICM DWord3, "Type"
- (fcChip->IMQ->QEntry[fcChip->IMQ->consumerIndex].word[2] & 0x0fL);
- }
- else
- {
- fcChip->fcStats.linkFailRX++;
-// printk("LKF (link failure) bit set on inbound message\n");
- }
-
- // clears SFQ entry from Tachyon buffer; copies to contiguous ulBuff
- CpqTsGetSFQEntry(
- fcChip, // i.e. this Device Object
- (USHORT)fcChip->SFQ->producerIndex, // SFQ producer ndx
- ulFibreFrame, TRUE); // contiguous destination buffer, update chip
-
- // analyze the incoming frame outside the INT handler...
- // (i.e., Worker)
-
- if( ucInboundMessageType == 1 )
- {
- fchs = (TachFCHDR_GCMND*)ulFibreFrame; // cast to examine IB frame
- // don't fill up our Q with garbage - only accept FCP-CMND
- // or XRDY frames
- if( (fchs->d_id & 0xFF000000) == 0x06000000 ) // CMND
- {
- // someone sent us a SCSI command
-
-// fcPutScsiQue( cpqfcHBAdata,
-// SFQ_UNASSISTED_FCP, ulFibreFrame);
- }
- else if( ((fchs->d_id & 0xFF000000) == 0x07000000) || // RSP (status)
- (fchs->d_id & 0xFF000000) == 0x05000000 ) // XRDY
- {
- ULONG x_ID;
- // Unfortunately, ABTS requires a Freeze on the chip so
- // we can modify the shared memory SEST. When frozen,
- // any received Exchange frames cannot be processed by
- // Tachyon, so they will be dumped in here. It is too
- // complex to attempt the reconstruct these frames in
- // the correct Exchange context, so we simply seek to
- // find status or transfer ready frames, and cause the
- // exchange to complete with errors before the timeout
- // expires. We use a Linux Scsi Cmnd result code that
- // causes immediate retry.
-
-
- // Do we have an open exchange that matches this s_id
- // and ox_id?
- for( x_ID = 0; x_ID < TACH_SEST_LEN; x_ID++)
- {
- if( (fchs->s_id & 0xFFFFFF) ==
- (Exchanges->fcExchange[x_ID].fchs.d_id & 0xFFFFFF)
- &&
- (fchs->ox_rx_id & 0xFFFF0000) ==
- (Exchanges->fcExchange[x_ID].fchs.ox_rx_id & 0xFFFF0000) )
- {
- // printk(" #R/X frame x_ID %08X# ", fchs->ox_rx_id );
- // simulate the anticipated error - since the
- // SEST was frozen, frames were lost...
- Exchanges->fcExchange[ x_ID ].status |= SFQ_FRAME;
-
- // presumes device is still there: send ABTS.
- cpqfcTSPutLinkQue( cpqfcHBAdata, BLS_ABTS, &x_ID);
- break; // done
- }
- }
- }
-
- }
-
- else if( ucInboundMessageType == 3)
- {
- // FC Link Service frames (e.g. PLOGI, ACC) come in here.
- cpqfcTSPutLinkQue( cpqfcHBAdata, SFQ_UNKNOWN, ulFibreFrame);
-
- }
-
- else if( ucInboundMessageType == 2 ) // "bad FCP"?
- {
-#ifdef IMQ_DEBUG
- printk("Bad FCP incoming frame discarded\n");
-#endif
- }
-
- else // don't know this type
- {
-#ifdef IMQ_DEBUG
- printk("Incoming frame discarded, type: %Xh\n", ucInboundMessageType);
-#endif
- }
-
- // Check the Frame Manager's error counters. We check them here
- // because presumably the link is up and healthy enough for the
- // counters to be meaningful (i.e., don't check them while loop
- // is initializing).
- fcChip->Registers.FMLinkStatus1.value = // get TL's counter
- readl(fcChip->Registers.FMLinkStatus1.address);
-
-
- fcChip->Registers.FMLinkStatus2.value = // get TL's counter
- readl(fcChip->Registers.FMLinkStatus2.address);
-
-
- break;
-
-
-
-
- // We get this CM because we issued a freeze
- // command to stop outbound frames. We issue the
- // freeze command at Link Up time; when this message
- // is received, the ERQ base can be switched and PDISC
- // frames can be sent.
-
-
- case ERQ_FROZEN_COMPLETION: // note: expect ERQ followed immediately
- // by FCP when freezing TL
- fcChip->Registers.TYstatus.value = // read what's frozen
- readl(fcChip->Registers.TYstatus.address);
- // (do nothing; wait for FCP frozen message)
- break;
- case FCP_FROZEN_COMPLETION:
-
- fcChip->Registers.TYstatus.value = // read what's frozen
- readl(fcChip->Registers.TYstatus.address);
-
- // Signal the kernel thread to proceed with SEST modification
- up( cpqfcHBAdata->TachFrozen);
-
- break;
-
-
-
- case INBOUND_C1_TIMEOUT:
- case MFS_BUF_WARN:
- case IMQ_BUF_WARN:
- break;
-
-
-
-
-
- // In older Tachyons, we 'clear' the internal 'core' interrupt state
- // by reading the FMstatus register. In newer TachLite (Tachyon),
- // we must WRITE the register
- // to clear the condition (TL/TS UG, pg 179)
- case FRAME_MGR_INTERRUPT:
- {
- PFC_LOGGEDIN_PORT pLoggedInPort;
-
- fcChip->Registers.FMstatus.value =
- readl( fcChip->Registers.FMstatus.address );
-
- // PROBLEM: It is possible, especially with "dumb" hubs that
- // don't automatically LIP on by-pass of ports that are going
- // away, for the hub by-pass process to destroy critical
- // ordered sets of a frame. The result of this is a hung LPSM
- // (Loop Port State Machine), which on Tachyon results in a
- // (default 2 sec) Loop State Timeout (LST) FM message. We
- // want to avoid this relatively huge timeout by detecting
- // likely scenarios which will result in LST.
- // To do this, we could examine FMstatus for Loss of Synchronization
- // and/or Elastic Store (ES) errors. Of these, Elastic Store is better
- // because we get this indication more quickly than the LOS.
- // Not all ES errors are harmfull, so we don't want to LIP on every
- // ES. Instead, on every ES, detect whether our LPSM in in one
- // of the LST states: ARBITRATING, OPEN, OPENED, XMITTED CLOSE,
- // or RECEIVED CLOSE. (See TL/TS UG, pg. 181)
- // If any of these LPSM states are detected
- // in combination with the LIP while LDn is not set,
- // send an FM init (LIP F7,F7 for loops)!
- // It is critical to the physical link stability NOT to reset (LIP)
- // more than absolutely necessary; this is a basic premise of the
- // SANMark level 1 spec.
- {
- ULONG Lpsm = (fcChip->Registers.FMstatus.value & 0xF0) >>4;
-
- if( (fcChip->Registers.FMstatus.value & 0x400) // ElasticStore?
- &&
- !(fcChip->Registers.FMstatus.value & 0x100) // NOT LDn
- &&
- !(fcChip->Registers.FMstatus.value & 0x1000)) // NOT LF
- {
- if( (Lpsm != 0) || // not MONITORING? or
- !(Lpsm & 0x8) )// not already offline?
- {
- // now check the particular LST states...
- if( (Lpsm == ARBITRATING) || (Lpsm == OPEN) ||
- (Lpsm == OPENED) || (Lpsm == XMITTD_CLOSE) ||
- (Lpsm == RCVD_CLOSE) )
- {
- // re-init the loop before it hangs itself!
- printk(" #req FMinit on E-S: LPSM %Xh# ",Lpsm);
-
-
- fcChip->fcStats.FMinits++;
- writel( 6, fcChip->Registers.FMcontrol.address); // LIP
- }
- }
- }
- else if( fcChip->Registers.FMstatus.value & 0x40000 ) // LST?
- {
- printk(" #req FMinit on LST, LPSM %Xh# ",Lpsm);
-
- fcChip->fcStats.FMinits++;
- writel( 6, fcChip->Registers.FMcontrol.address); // LIP
- }
- }
-
-
- // clear only the 'interrupting' type bits for this REG read
- writel( (fcChip->Registers.FMstatus.value & 0xff3fff00L),
- fcChip->Registers.FMstatus.address);
-
-
- // copy frame manager status to unused ULONG slot
- fcChip->IMQ->QEntry[fcChip->IMQ->consumerIndex].word[0] =
- fcChip->Registers.FMstatus.value; // (for debugging)
-
-
- // Load the Frame Manager's error counters. We check them here
- // because presumably the link is up and healthy enough for the
- // counters to be meaningful (i.e., don't check them while loop
- // is initializing).
- fcChip->Registers.FMLinkStatus1.value = // get TL's counter
- readl(fcChip->Registers.FMLinkStatus1.address);
-
- fcChip->Registers.FMLinkStatus2.value = // get TL's counter
- readl(fcChip->Registers.FMLinkStatus2.address);
-
- // Get FM BB_Credit Zero Reg - does not clear on READ
- fcChip->Registers.FMBB_CreditZero.value = // get TL's counter
- readl(fcChip->Registers.FMBB_CreditZero.address);
-
-
-
- fcParseLinkStatusCounters( fcChip); // load into 6 s/w accumulators
-
-
- // LINK DOWN
-
- if( fcChip->Registers.FMstatus.value & 0x100L ) // Link DOWN bit
- {
-
-#ifdef IMQ_DEBUG
- printk("LinkDn\n");
-#endif
- printk(" #LDn# ");
-
- fcChip->fcStats.linkDown++;
-
- SetTachTOV( cpqfcHBAdata); // must set according to SANMark
-
- // Check the ERQ - force it to be "empty" to prevent Tach
- // from sending out frames before we do logins.
-
-
- if( fcChip->ERQ->producerIndex != fcChip->ERQ->consumerIndex)
- {
-// printk("#ERQ PI != CI#");
- CpqTsFreezeTachlite( fcChip, 1); // freeze ERQ only
- fcChip->ERQ->producerIndex = fcChip->ERQ->consumerIndex = 0;
- writel( fcChip->ERQ->base,
- (fcChip->Registers.ReMapMemBase + TL_MEM_ERQ_BASE));
- // re-writing base forces ERQ PI to equal CI
-
- }
-
- // link down transition occurred -- port_ids can change
- // on next LinkUp, so we must invalidate current logins
- // (and any I/O in progress) until PDISC or PLOGI/PRLI
- // completes
- {
- pLoggedInPort = &fcChip->fcPorts;
- while( pLoggedInPort ) // for all ports which are expecting
- // PDISC after the next LIP, set the
- // logoutTimer
- {
-
- if( pLoggedInPort->pdisc) // expecting PDISC within 2 sec?
- {
- pLoggedInPort->LOGO_timer = 3; // we want 2 seconds
- // but Timer granularity
- // is 1 second
- }
- // suspend any I/O in progress until
- // PDISC received...
- pLoggedInPort->prli = FALSE; // block FCP-SCSI commands
-
- pLoggedInPort = pLoggedInPort->pNextPort;
- } // ... all Previously known ports checked
- }
-
- // since any hot plugging device may NOT support LILP frames
- // (such as early Tachyon chips), clear this flag indicating
- // we shouldn't use (our copy of) a LILP map.
- // If we receive an LILP frame, we'll set it again.
- fcChip->Options.LILPin = 0; // our LILPmap is invalid
- cpqfcHBAdata->PortDiscDone = 0; // must re-validate FC ports!
-
- // also, we want to invalidate (i.e. INITIATOR_ABORT) any
- // open Login exchanges, in case the LinkDown happened in the
- // middle of logins. It's possible that some ports already
- // ACCepted login commands which we have not processed before
- // another LinkDown occurred. Any accepted Login exhanges are
- // invalidated by LinkDown, even before they are acknowledged.
- // It's also possible for a port to have a Queued Reply or Request
- // for login which was interrupted by LinkDown; it may come later,
- // but it will be unacceptable to us.
-
- // we must scan the entire exchange space, find every Login type
- // originated by us, and abort it. This is NOT an abort due to
- // timeout, so we don't actually send abort to the other port -
- // we just complete it to free up the fcExchange slot.
-
- for( i=TACH_SEST_LEN; i< TACH_MAX_XID; i++)
- { // looking for Extended Link Serv.Exchanges
- if( Exchanges->fcExchange[i].type == ELS_PDISC ||
- Exchanges->fcExchange[i].type == ELS_PLOGI ||
- Exchanges->fcExchange[i].type == ELS_PRLI )
- {
- // ABORT the exchange!
-#ifdef IMQ_DEBUG
- printk("Originator ABORT x_id %Xh, type %Xh, port_id %Xh on LDn\n",
- i, Exchanges->fcExchange[i].type,
- Exchanges->fcExchange[i].fchs.d_id);
-#endif
-
- Exchanges->fcExchange[i].status |= INITIATOR_ABORT;
- cpqfcTSCompleteExchange( cpqfcHBAdata->PciDev, fcChip, i); // abort on LDn
- }
- }
-
- }
-
- // ################ LINK UP ##################
- if( fcChip->Registers.FMstatus.value & 0x200L ) // Link Up bit
- { // AL_PA could have changed
-
- // We need the following code, duplicated from LinkDn condition,
- // because it's possible for the Tachyon to re-initialize (hard
- // reset) without ever getting a LinkDn indication.
- pLoggedInPort = &fcChip->fcPorts;
- while( pLoggedInPort ) // for all ports which are expecting
- // PDISC after the next LIP, set the
- // logoutTimer
- {
- if( pLoggedInPort->pdisc) // expecting PDISC within 2 sec?
- {
- pLoggedInPort->LOGO_timer = 3; // we want 2 seconds
- // but Timer granularity
- // is 1 second
-
- // suspend any I/O in progress until
- // PDISC received...
-
- }
- pLoggedInPort = pLoggedInPort->pNextPort;
- } // ... all Previously known ports checked
-
- // CpqTs acquired AL_PA in register AL_PA (ACQ_ALPA)
- fcChip->Registers.rcv_al_pa.value =
- readl(fcChip->Registers.rcv_al_pa.address);
-
- // Now, if our acquired address is DIFFERENT from our
- // previous one, we are not allow to do PDISC - we
- // must go back to PLOGI, which will terminate I/O in
- // progress for ALL logged in FC devices...
- // (This is highly unlikely).
-
- if( (fcChip->Registers.my_al_pa & 0xFF) !=
- ((fcChip->Registers.rcv_al_pa.value >> 16) &0xFF) )
- {
-
-// printk(" #our HBA port_id changed!# "); // FC port_id changed!!
-
- pLoggedInPort = &fcChip->fcPorts;
- while( pLoggedInPort ) // for all ports which are expecting
- // PDISC after the next LIP, set the
- // logoutTimer
- {
- pLoggedInPort->pdisc = FALSE;
- pLoggedInPort->prli = FALSE;
- pLoggedInPort = pLoggedInPort->pNextPort;
- } // ... all Previously known ports checked
-
- // when the port_id changes, we must terminate
- // all open exchanges.
- cpqfcTSTerminateExchange( cpqfcHBAdata, NULL, PORTID_CHANGED);
-
- }
-
- // Replace the entire 24-bit port_id. We only know the
- // lower 8 bits (alpa) from Tachyon; if a FLOGI is done,
- // we'll get the upper 16-bits from the FLOGI ACC frame.
- // If someone plugs into Fabric switch, we'll do FLOGI and
- // get full 24-bit port_id; someone could then remove and
- // hot-plug us into a dumb hub. If we send a 24-bit PLOGI
- // to a "private" loop device, it might blow up.
- // Consequently, we force the upper 16-bits of port_id to
- // be re-set on every LinkUp transition
- fcChip->Registers.my_al_pa =
- (fcChip->Registers.rcv_al_pa.value >> 16) & 0xFF;
-
-
- // copy frame manager status to unused ULONG slot
- fcChip->IMQ->QEntry[fcChip->IMQ->consumerIndex].word[1] =
- fcChip->Registers.my_al_pa; // (for debugging)
-
- // for TachLite, we need to write the acquired al_pa
- // back into the FMconfig register, because after
- // first initialization, the AQ (prev. acq.) bit gets
- // set, causing TL FM to use the AL_PA field in FMconfig.
- // (In Tachyon, FM writes the acquired AL_PA for us.)
- ulBuff = readl( fcChip->Registers.FMconfig.address);
- ulBuff &= 0x00ffffffL; // mask out current al_pa
- ulBuff |= ( fcChip->Registers.my_al_pa << 24 ); // or in acq. al_pa
- fcChip->Registers.FMconfig.value = ulBuff; // copy it back
- writel( fcChip->Registers.FMconfig.value, // put in TachLite
- fcChip->Registers.FMconfig.address);
-
-
-#ifdef IMQ_DEBUG
- printk("#LUp %Xh, FMstat 0x%08X#",
- fcChip->Registers.my_al_pa, fcChip->Registers.FMstatus.value);
-#endif
-
- // also set the WRITE-ONLY My_ID Register (for Fabric
- // initialization)
- writel( fcChip->Registers.my_al_pa,
- fcChip->Registers.ReMapMemBase +TL_MEM_TACH_My_ID);
-
-
- fcChip->fcStats.linkUp++;
-
- // reset TL statistics counters
- // (we ignore these error counters
- // while link is down)
- ulBuff = // just reset TL's counter
- readl( fcChip->Registers.FMLinkStatus1.address);
-
- ulBuff = // just reset TL's counter
- readl( fcChip->Registers.FMLinkStatus2.address);
-
- // for initiator, need to start verifying ports (e.g. PDISC)
-
-
-
-
-
-
- CpqTsUnFreezeTachlite( fcChip, 2); // unfreeze Tachlite, if Link OK
-
- // Tachyon creates an interesting problem for us on LILP frames.
- // Instead of writing the incoming LILP frame into the SFQ before
- // indicating LINK UP (the actual order of events), Tachyon tells
- // us LINK UP, and later us the LILP. So we delay, then examine the
- // IMQ for an Inbound CM (x04); if found, we can set
- // LINKACTIVE after processing the LILP. Otherwise, just proceed.
- // Since Tachyon imposes this time delay (and doesn't tell us
- // what it is), we have to impose a delay before "Peeking" the IMQ
- // for Tach hardware (DMA) delivery.
- // Processing LILP is required by SANMark
- udelay( 1000); // microsec delay waiting for LILP (if it comes)
- if( PeekIMQEntry( fcChip, ELS_LILP_FRAME) )
- { // found SFQ LILP, which will post LINKACTIVE
-// printk("skipping LINKACTIVE post\n");
-
- }
- else
- cpqfcTSPutLinkQue( cpqfcHBAdata, LINKACTIVE, ulFibreFrame);
- }
-
-
-
- // ******* Set Fabric Login indication ********
- if( fcChip->Registers.FMstatus.value & 0x2000 )
- {
- printk(" #Fabric# ");
- fcChip->Options.fabric = 1;
- }
- else
- fcChip->Options.fabric = 0;
-
-
-
- // ******* LIP(F8,x) or BAD AL_PA? ********
- if( fcChip->Registers.FMstatus.value & 0x30000L )
- {
- // copy the error AL_PAs
- fcChip->Registers.rcv_al_pa.value =
- readl(fcChip->Registers.rcv_al_pa.address);
-
- // Bad AL_PA?
- if( fcChip->Registers.FMstatus.value & 0x10000L )
- {
- PFC_LOGGEDIN_PORT pLoggedInPort;
-
- // copy "BAD" al_pa field
- fcChip->IMQ->QEntry[fcChip->IMQ->consumerIndex].word[1] =
- (fcChip->Registers.rcv_al_pa.value & 0xff00L) >> 8;
-
- pLoggedInPort = fcFindLoggedInPort( fcChip,
- NULL, // DON'T search Scsi Nexus
- fcChip->IMQ->QEntry[fcChip->IMQ->consumerIndex].word[1], // port id
- NULL, // DON'T search linked list for FC WWN
- NULL); // DON'T care about end of list
-
- if( pLoggedInPort )
- {
- // Just in case we got this BAD_ALPA because a device
- // quietly disappeared (can happen on non-managed hubs such
- // as the Vixel Rapport 1000),
- // do an Implicit Logout. We never expect this on a Logged
- // in port (but do expect it on port discovery).
- // (As a reasonable alternative, this could be changed to
- // simply start the implicit logout timer, giving the device
- // several seconds to "come back".)
- //
- printk(" #BAD alpa %Xh# ",
- fcChip->IMQ->QEntry[fcChip->IMQ->consumerIndex].word[1]);
- cpqfcTSImplicitLogout( cpqfcHBAdata, pLoggedInPort);
- }
- }
- // LIP(f8,x)?
- if( fcChip->Registers.FMstatus.value & 0x20000L )
- {
- // for debugging, copy al_pa field
- fcChip->IMQ->QEntry[fcChip->IMQ->consumerIndex].word[2] =
- (fcChip->Registers.rcv_al_pa.value & 0xffL);
- // get the other port's al_pa
- // (one that sent LIP(F8,?) )
- }
- }
-
- // Elastic store err
- if( fcChip->Registers.FMstatus.value & 0x400L )
- {
- // don't count e-s if loop is down!
- if( !(USHORT)(fcChip->Registers.FMstatus.value & 0x80) )
- fcChip->fcStats.e_stores++;
-
- }
- }
- break;
-
-
- case INBOUND_FCP_XCHG_COMPLETION: // 0x0C
-
- // Remarks:
- // On Tachlite TL/TS, we get this message when the data phase
- // of a SEST inbound transfer is complete. For example, if a WRITE command
- // was received with OX_ID 0, we might respond with XFER_RDY with
- // RX_ID 8001. This would start the SEST controlled data phases. When
- // all data frames are received, we get this inbound completion. This means
- // we should send a status frame to complete the status phase of the
- // FCP-SCSI exchange, using the same OX_ID,RX_ID that we used for data
- // frames.
- // See Outbound CM discussion of x_IDs
- // Psuedo Code
- // Get SEST index (x_ID)
- // x_ID out of range, return (err condition)
- // set status bits from 2nd dword
- // free transactionID & SEST entry
- // call fcComplete with transactionID & status
-
- ulBuff = fcChip->IMQ->QEntry[fcChip->IMQ->consumerIndex].word[0];
- x_ID = ulBuff & 0x7fffL; // lower 14 bits SEST_Index/Trans_ID
- // (mask out MSB "direction" bit)
- // Range check CM OX/RX_ID value...
- if( x_ID < TACH_SEST_LEN ) // don't go beyond SEST array space
- {
-
-//#define FCP_COMPLETION_DBG 1
-#ifdef FCP_COMPLETION_DBG
- printk(" FCP_CM x_ID %Xh, status %Xh, Cmnd %p\n",
- x_ID, ulBuff, Exchanges->fcExchange[x_ID].Cmnd);
-#endif
- if( ulBuff & 0x08000000L ) // RPC -Response Phase Complete - or -
- // time to send response frame?
- RPCset = 1; // (SEST transaction)
- else
- RPCset = 0;
- // set the status for this Inbound SCSI transaction's ID
- dwStatus = 0L;
- if( ulBuff & 0x70000000L ) // any errs?
- {
-
- if( ulBuff & 0x40000000L )
- dwStatus |= LINKFAIL_RX;
-
- if( ulBuff & 0x20000000L )
- dwStatus |= COUNT_ERROR;
-
- if( ulBuff & 0x10000000L )
- dwStatus |= OVERFLOW;
- }
-
-
- // FCP transaction done - copy status
- Exchanges->fcExchange[ x_ID ].status = dwStatus;
-
-
- // Did the exchange get an FCP-RSP response frame?
- // (Note the little endian/big endian FC payload difference)
-
- if( RPCset ) // SEST transaction Response frame rec'd
- {
- // complete the command in our driver...
- cpqfcTSCompleteExchange( cpqfcHBAdata->PciDev,fcChip, x_ID);
-
- } // end "RPCset"
-
- else // ("target" logic)
- {
- // Tachlite says all data frames have been received - now it's time
- // to analyze data transfer (successful?), then send a response
- // frame for this exchange
-
- ulFibreFrame[0] = x_ID; // copy for later reference
-
- // if this was a TWE, we have to send satus response
- if( Exchanges->fcExchange[ x_ID].type == SCSI_TWE )
- {
-// fcPutScsiQue( cpqfcHBAdata,
-// NEED_FCP_RSP, ulFibreFrame); // (ulFibreFrame not used here)
- }
- }
- }
- else // ERROR CONDITION! bogus x_ID in completion message
- {
- printk("IN FCP_XCHG: bad x_ID: %Xh\n", x_ID);
- }
-
- break;
-
-
-
-
- case INBOUND_SCSI_DATA_COMMAND:
- case BAD_SCSI_FRAME:
- case INB_SCSI_STATUS_COMPLETION:
- case BUFFER_PROCESSED_COMPLETION:
- break;
- }
-
- // Tachyon is producing;
- // we are consuming
- fcChip->IMQ->consumerIndex++; // increment OUR consumerIndex
- if( fcChip->IMQ->consumerIndex >= IMQ_LEN)// check for rollover
- fcChip->IMQ->consumerIndex = 0L; // reset it
-
-
- if( fcChip->IMQ->producerIndex == fcChip->IMQ->consumerIndex )
- { // all Messages are processed -
- iStatus = 0; // no more messages to process
-
- }
- else
- iStatus = 1; // more messages to process
-
- // update TachLite's ConsumerIndex... (clears INTA_L)
- // NOTE: according to TL/TS UG, the
- // "host must return completion messages in sequential order".
- // Does this mean one at a time, in the order received? We
- // presume so.
-
- writel( fcChip->IMQ->consumerIndex,
- (fcChip->Registers.ReMapMemBase + IMQ_CONSUMER_INDEX));
-
-#if IMQ_DEBUG
- printk("Process IMQ: writing consumer ndx %d\n ",
- fcChip->IMQ->consumerIndex);
- printk("PI %X, CI %X\n",
- fcChip->IMQ->producerIndex,fcChip->IMQ->consumerIndex );
-#endif
-
-
-
- }
- else
- {
- // hmmm... why did we get interrupted/called with no message?
- iStatus = -1; // nothing to process
-#if IMQ_DEBUG
- printk("Process IMQ: no message PI %Xh CI %Xh",
- fcChip->IMQ->producerIndex,
- fcChip->IMQ->consumerIndex);
-#endif
- }
-
- LEAVE("ProcessIMQEntry");
-
- return iStatus;
-}
-
-
-
-
-
-// This routine initializes Tachyon according to the following
-// options (opcode1):
-// 1 - RESTART Tachyon, simulate power on condition by shutting
-// down laser, resetting the hardware, de-allocating all buffers;
-// continue
-// 2 - Config Tachyon / PCI registers;
-// continue
-// 3 - Allocating memory and setting Tachyon queues (write Tachyon regs);
-// continue
-// 4 - Config frame manager registers, initialize, turn on laser
-//
-// Returns:
-// -1 on fatal error
-// 0 on success
-
-int CpqTsInitializeTachLite( void *pHBA, int opcode1, int opcode2)
-{
- CPQFCHBA *cpqfcHBAdata = (CPQFCHBA*)pHBA;
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- ULONG ulBuff;
- UCHAR bBuff;
- int iStatus=-1; // assume failure
-
- ENTER("InitializeTachLite");
-
- // verify board's base address (sanity check)
-
- if( !fcChip->Registers.ReMapMemBase) // NULL address for card?
- return -1; // FATAL error!
-
-
-
- switch( opcode1 )
- {
- case 1: // restore hardware to power-on (hard) restart
-
-
- iStatus = fcChip->ResetTachyon(
- cpqfcHBAdata, opcode2); // laser off, reset hardware
- // de-allocate aligned buffers
-
-
-/* TBD // reset FC link Q (producer and consumer = 0)
- fcLinkQReset(cpqfcHBAdata);
-
-*/
-
- if( iStatus )
- break;
-
- case 2: // Config PCI/Tachyon registers
- // NOTE: For Tach TL/TS, bit 31 must be set to 1. For TS chips, a read
- // of bit 31 indicates state of M66EN signal; if 1, chip may run at
- // 33-66MHz (see TL/TS UG, pg 159)
-
- ulBuff = 0x80000000; // TachLite Configuration Register
-
- writel( ulBuff, fcChip->Registers.TYconfig.address);
-// ulBuff = 0x0147L; // CpqTs PCI CFGCMD register
-// WritePCIConfiguration( fcChip->Backplane.bus,
-// fcChip->Backplane.slot, TLCFGCMD, ulBuff, 4);
-// ulBuff = 0x0L; // test!
-// ReadPCIConfiguration( fcChip->Backplane.bus,
-// fcChip->Backplane.slot, TLCFGCMD, &ulBuff, 4);
-
- // read back for reference...
- fcChip->Registers.TYconfig.value =
- readl( fcChip->Registers.TYconfig.address );
-
- // what is the PCI bus width?
- pci_read_config_byte( cpqfcHBAdata->PciDev,
- 0x43, // PCIMCTR offset
- &bBuff);
-
- fcChip->Registers.PCIMCTR = bBuff;
-
- // set string identifying the chip on the circuit board
-
- fcChip->Registers.TYstatus.value =
- readl( fcChip->Registers.TYstatus.address);
-
- {
-// Now that we are supporting multiple boards, we need to change
-// this logic to check for PCI vendor/device IDs...
-// for now, quick & dirty is simply checking Chip rev
-
- ULONG RevId = (fcChip->Registers.TYstatus.value &0x3E0)>>5;
- UCHAR Minor = (UCHAR)(RevId & 0x3);
- UCHAR Major = (UCHAR)((RevId & 0x1C) >>2);
-
- /* printk(" HBA Tachyon RevId %d.%d\n", Major, Minor); */
- if( (Major == 1) && (Minor == 2) )
- {
- sprintf( cpqfcHBAdata->fcChip.Name, STACHLITE66_TS12);
-
- }
- else if( (Major == 1) && (Minor == 3) )
- {
- sprintf( cpqfcHBAdata->fcChip.Name, STACHLITE66_TS13);
- }
- else if( (Major == 2) && (Minor == 1) )
- {
- sprintf( cpqfcHBAdata->fcChip.Name, SAGILENT_XL2_21);
- }
- else
- sprintf( cpqfcHBAdata->fcChip.Name, STACHLITE_UNKNOWN);
- }
-
-
-
- case 3: // allocate mem, set Tachyon Que registers
- iStatus = CpqTsCreateTachLiteQues( cpqfcHBAdata, opcode2);
-
- if( iStatus )
- break;
-
- // now that the Queues exist, Tach can DMA to them, so
- // we can begin processing INTs
- // INTEN register - enable INT (TachLite interrupt)
- writeb( 0x1F, fcChip->Registers.ReMapMemBase + IINTEN);
-
- // Fall through
- case 4: // Config Fame Manager, Init Loop Command, laser on
-
- // L_PORT or loopback
- // depending on Options
- iStatus = CpqTsInitializeFrameManager( fcChip,0 );
- if( iStatus )
- {
- // failed to initialize Frame Manager
- break;
- }
-
- default:
- break;
- }
- LEAVE("InitializeTachLite");
-
- return iStatus;
-}
-
-
-
-
-// Depending on the type of platform memory allocation (e.g. dynamic),
-// it's probably best to free memory in opposite order as it was allocated.
-// Order of allocation: see other function
-
-
-int CpqTsDestroyTachLiteQues( void *pHBA, int opcode)
-{
- CPQFCHBA *cpqfcHBAdata = (CPQFCHBA*)pHBA;
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- USHORT i, iStatus=0;
- void* vPtr; // mem Align manager sets this to the freed address on success
- unsigned long ulPtr; // for 64-bit pointer cast (e.g. Alpa machine)
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- PSGPAGES j, next;
-
- ENTER("DestroyTachLiteQues");
-
- if( fcChip->SEST )
- {
- // search out and free Pool for Extended S/G list pages
-
- for( i=0; i < TACH_SEST_LEN; i++) // for each exchange
- {
- // It's possible that extended S/G pages were allocated, mapped, and
- // not cleared due to error conditions or O/S driver termination.
- // Make sure they're all gone.
- if (Exchanges->fcExchange[i].Cmnd != NULL)
- cpqfc_pci_unmap(cpqfcHBAdata->PciDev, Exchanges->fcExchange[i].Cmnd,
- fcChip, i); // undo DMA mappings.
-
- for (j=fcChip->SEST->sgPages[i] ; j != NULL ; j = next) {
- next = j->next;
- kfree(j);
- }
- fcChip->SEST->sgPages[i] = NULL;
- }
- ulPtr = (unsigned long)fcChip->SEST;
- vPtr = fcMemManager( cpqfcHBAdata->PciDev,
- &cpqfcHBAdata->dynamic_mem[0],
- 0,0, (ULONG)ulPtr, NULL ); // 'free' mem
- fcChip->SEST = 0L; // null invalid ptr
- if( !vPtr )
- {
- printk("SEST mem not freed\n");
- iStatus = -1;
- }
- }
-
- if( fcChip->SFQ )
- {
-
- ulPtr = (unsigned long)fcChip->SFQ;
- vPtr = fcMemManager( cpqfcHBAdata->PciDev,
- &cpqfcHBAdata->dynamic_mem[0],
- 0,0, (ULONG)ulPtr, NULL ); // 'free' mem
- fcChip->SFQ = 0L; // null invalid ptr
- if( !vPtr )
- {
- printk("SFQ mem not freed\n");
- iStatus = -2;
- }
- }
-
-
- if( fcChip->IMQ )
- {
- // clear Indexes to show empty Queue
- fcChip->IMQ->producerIndex = 0;
- fcChip->IMQ->consumerIndex = 0;
-
- ulPtr = (unsigned long)fcChip->IMQ;
- vPtr = fcMemManager( cpqfcHBAdata->PciDev, &cpqfcHBAdata->dynamic_mem[0],
- 0,0, (ULONG)ulPtr, NULL ); // 'free' mem
- fcChip->IMQ = 0L; // null invalid ptr
- if( !vPtr )
- {
- printk("IMQ mem not freed\n");
- iStatus = -3;
- }
- }
-
- if( fcChip->ERQ ) // release memory blocks used by the queues
- {
- ulPtr = (unsigned long)fcChip->ERQ;
- vPtr = fcMemManager( cpqfcHBAdata->PciDev, &cpqfcHBAdata->dynamic_mem[0],
- 0,0, (ULONG)ulPtr, NULL ); // 'free' mem
- fcChip->ERQ = 0L; // null invalid ptr
- if( !vPtr )
- {
- printk("ERQ mem not freed\n");
- iStatus = -4;
- }
- }
-
- // free up the primary EXCHANGES struct and Link Q
- cpqfc_free_dma_consistent(cpqfcHBAdata);
-
- LEAVE("DestroyTachLiteQues");
-
- return iStatus; // non-zero (failed) if any memory not freed
-}
-
-
-
-
-
-// The SFQ is an array with SFQ_LEN length, each element (QEntry)
-// with eight 32-bit words. TachLite places incoming FC frames (i.e.
-// a valid FC frame with our AL_PA ) in contiguous SFQ entries
-// and sends a completion message telling the host where the frame is
-// in the que.
-// This function copies the current (or oldest not-yet-processed) QEntry to
-// a caller's contiguous buffer and updates the Tachyon chip's consumer index
-//
-// NOTE:
-// An FC frame may consume one or many SFQ entries. We know the total
-// length from the completion message. The caller passes a buffer large
-// enough for the complete message (max 2k).
-
-static void CpqTsGetSFQEntry(
- PTACHYON fcChip,
- USHORT producerNdx,
- ULONG *ulDestPtr, // contiguous destination buffer
- BOOLEAN UpdateChip)
-{
- ULONG total_bytes=0;
- ULONG consumerIndex = fcChip->SFQ->consumerIndex;
-
- // check passed copy of SFQ producer index -
- // is a new message waiting for us?
- // equal indexes means SFS is copied
-
- while( producerNdx != consumerIndex )
- { // need to process message
- total_bytes += 64; // maintain count to prevent writing past buffer
- // don't allow copies over Fibre Channel defined length!
- if( total_bytes <= 2048 )
- {
- memcpy( ulDestPtr,
- &fcChip->SFQ->QEntry[consumerIndex],
- 64 ); // each SFQ entry is 64 bytes
- ulDestPtr += 16; // advance pointer to next 64 byte block
- }
- // Tachyon is producing,
- // and we are consuming
-
- if( ++consumerIndex >= SFQ_LEN)// check for rollover
- consumerIndex = 0L; // reset it
- }
-
- // if specified, update the Tachlite chip ConsumerIndex...
- if( UpdateChip )
- {
- fcChip->SFQ->consumerIndex = consumerIndex;
- writel( fcChip->SFQ->consumerIndex,
- fcChip->Registers.SFQconsumerIndex.address);
- }
-}
-
-
-
-// TachLite routinely freezes it's core ques - Outbound FIFO, Inbound FIFO,
-// and Exchange Request Queue (ERQ) on error recover -
-// (e.g. whenever a LIP occurs). Here
-// we routinely RESUME by clearing these bits, but only if the loop is up
-// to avoid ERROR IDLE messages forever.
-
-void CpqTsUnFreezeTachlite( void *pChip, int type )
-{
- PTACHYON fcChip = (PTACHYON)pChip;
- fcChip->Registers.TYcontrol.value =
- readl(fcChip->Registers.TYcontrol.address);
-
- // (bit 4 of value is GBIC LASER)
- // if we 'unfreeze' the core machines before the loop is healthy
- // (i.e. FLT, OS, LS failure bits set in FMstatus)
- // we can get 'error idle' messages forever. Verify that
- // FMstatus (Link Status) is OK before unfreezing.
-
- if( !(fcChip->Registers.FMstatus.value & 0x07000000L) && // bits clear?
- !(fcChip->Registers.FMstatus.value & 0x80 )) // Active LPSM?
- {
- fcChip->Registers.TYcontrol.value &= ~0x300L; // clear FEQ, FFA
- if( type == 1 ) // unfreeze ERQ only
- {
-// printk("Unfreezing ERQ\n");
- fcChip->Registers.TYcontrol.value |= 0x10000L; // set REQ
- }
- else // unfreeze both ERQ and FCP-ASSIST (SEST)
- {
-// printk("Unfreezing ERQ & FCP-ASSIST\n");
-
- // set ROF, RIF, REQ - resume Outbound FCP, Inbnd FCP, ERQ
- fcChip->Registers.TYcontrol.value |= 0x70000L; // set ROF, RIF, REQ
- }
-
- writel( fcChip->Registers.TYcontrol.value,
- fcChip->Registers.TYcontrol.address);
-
- }
- // readback for verify (TachLite still frozen?)
- fcChip->Registers.TYstatus.value =
- readl(fcChip->Registers.TYstatus.address);
-}
-
-
-// Whenever an FC Exchange Abort is required, we must manipulate the
-// Host/Tachyon shared memory SEST table. Before doing this, we
-// must freeze Tachyon, which flushes certain buffers and ensure we
-// can manipulate the SEST without contention.
-// This freeze function will result in FCP & ERQ FROZEN completion
-// messages (per argument "type").
-
-void CpqTsFreezeTachlite( void *pChip, int type )
-{
- PTACHYON fcChip = (PTACHYON)pChip;
- fcChip->Registers.TYcontrol.value =
- readl(fcChip->Registers.TYcontrol.address);
-
- //set FFA, FEQ - freezes SCSI assist and ERQ
- if( type == 1) // freeze ERQ only
- fcChip->Registers.TYcontrol.value |= 0x100L; // (bit 4 is laser)
- else // freeze both FCP assists (SEST) and ERQ
- fcChip->Registers.TYcontrol.value |= 0x300L; // (bit 4 is laser)
-
- writel( fcChip->Registers.TYcontrol.value,
- fcChip->Registers.TYcontrol.address);
-
-}
-
-
-
-
-// TL has two Frame Manager Link Status Registers, with three 8-bit
-// fields each. These eight bit counters are cleared after each read,
-// so we define six 32-bit accumulators for these TL counters. This
-// function breaks out each 8-bit field and adds the value to the existing
-// sum. (s/w counters cleared independently)
-
-void fcParseLinkStatusCounters(PTACHYON fcChip)
-{
- UCHAR bBuff;
- ULONG ulBuff;
-
-
-// The BB0 timer usually increments when TL is initialized, resulting
-// in an initially bogus count. If our own counter is ZERO, it means we
-// are reading this thing for the first time, so we ignore the first count.
-// Also, reading the register does not clear it, so we have to keep an
-// additional static counter to detect rollover (yuk).
-
- if( fcChip->fcStats.lastBB0timer == 0L) // TL was reset? (ignore 1st values)
- {
- // get TL's register counter - the "last" count
- fcChip->fcStats.lastBB0timer =
- fcChip->Registers.FMBB_CreditZero.value & 0x00ffffffL;
- }
- else // subsequent pass - check for rollover
- {
- // "this" count
- ulBuff = fcChip->Registers.FMBB_CreditZero.value & 0x00ffffffL;
- if( fcChip->fcStats.lastBB0timer > ulBuff ) // rollover happened
- {
- // counter advanced to max...
- fcChip->fcStats.BB0_Timer += (0x00FFFFFFL - fcChip->fcStats.lastBB0timer);
- fcChip->fcStats.BB0_Timer += ulBuff; // plus some more
-
-
- }
- else // no rollover -- more counts or no change
- {
- fcChip->fcStats.BB0_Timer += (ulBuff - fcChip->fcStats.lastBB0timer);
-
- }
-
- fcChip->fcStats.lastBB0timer = ulBuff;
- }
-
-
-
- bBuff = (UCHAR)(fcChip->Registers.FMLinkStatus1.value >> 24);
- fcChip->fcStats.LossofSignal += bBuff;
-
- bBuff = (UCHAR)(fcChip->Registers.FMLinkStatus1.value >> 16);
- fcChip->fcStats.BadRXChar += bBuff;
-
- bBuff = (UCHAR)(fcChip->Registers.FMLinkStatus1.value >> 8);
- fcChip->fcStats.LossofSync += bBuff;
-
-
- bBuff = (UCHAR)(fcChip->Registers.FMLinkStatus2.value >> 24);
- fcChip->fcStats.Rx_EOFa += bBuff;
-
- bBuff = (UCHAR)(fcChip->Registers.FMLinkStatus2.value >> 16);
- fcChip->fcStats.Dis_Frm += bBuff;
-
- bBuff = (UCHAR)(fcChip->Registers.FMLinkStatus2.value >> 8);
- fcChip->fcStats.Bad_CRC += bBuff;
-}
-
-
-void cpqfcTSClearLinkStatusCounters(PTACHYON fcChip)
-{
- ENTER("ClearLinkStatusCounters");
- memset( &fcChip->fcStats, 0, sizeof( FCSTATS));
- LEAVE("ClearLinkStatusCounters");
-
-}
-
-
-
-
-// The following function reads the I2C hardware to get the adapter's
-// World Wide Name (WWN).
-// If the WWN is "500805f1fadb43e8" (as printed on the card), the
-// Tachyon WWN_hi (32-bit) register is 500805f1, and WWN_lo register
-// is fadb43e8.
-// In the NVRAM, the bytes appear as:
-// [2d] ..
-// [2e] ..
-// [2f] 50
-// [30] 08
-// [31] 05
-// [32] f1
-// [33] fa
-// [34] db
-// [35] 43
-// [36] e8
-//
-// In the Fibre Channel (Big Endian) format, the FC-AL LISM frame will
-// be correctly loaded by Tachyon silicon. In the login payload, bytes
-// must be correctly swapped for Big Endian format.
-
-int CpqTsReadWriteWWN( PVOID pChip, int Read)
-{
- PTACHYON fcChip = (PTACHYON)pChip;
-#define NVRAM_SIZE 512
- unsigned short i, count = NVRAM_SIZE;
- UCHAR nvRam[NVRAM_SIZE], WWNbuf[8];
- ULONG ulBuff;
- int iStatus=-1; // assume failure
- int WWNoffset;
-
- ENTER("ReadWriteWWN");
- // Now try to read the WWN from the adapter's NVRAM
-
- if( Read ) // READing NVRAM WWN?
- {
- ulBuff = cpqfcTS_ReadNVRAM( fcChip->Registers.TYstatus.address,
- fcChip->Registers.TYcontrol.address,
- count, &nvRam[0] );
-
- if( ulBuff ) // NVRAM read successful?
- {
- iStatus = 0; // success!
-
- // for engineering/ prototype boards, the data may be
- // invalid (GIGO, usually all "FF"); this prevents the
- // parse routine from working correctly, which means
- // nothing will be written to our passed buffer.
-
- WWNoffset = cpqfcTS_GetNVRAM_data( WWNbuf, nvRam );
-
- if( !WWNoffset ) // uninitialized NVRAM -- copy bytes directly
- {
- printk( "CAUTION: Copying NVRAM data on fcChip\n");
- for( i= 0; i < 8; i++)
- WWNbuf[i] = nvRam[i +0x2f]; // dangerous! some formats won't work
- }
-
- fcChip->Registers.wwn_hi = 0L;
- fcChip->Registers.wwn_lo = 0L;
- for( i=0; i<4; i++) // WWN bytes are big endian in NVRAM
- {
- ulBuff = 0L;
- ulBuff = (ULONG)(WWNbuf[i]) << (8 * (3-i));
- fcChip->Registers.wwn_hi |= ulBuff;
- }
- for( i=0; i<4; i++) // WWN bytes are big endian in NVRAM
- {
- ulBuff = 0L;
- ulBuff = (ULONG)(WWNbuf[i+4]) << (8 * (3-i));
- fcChip->Registers.wwn_lo |= ulBuff;
- }
- } // done reading
- else
- {
-
- printk( "cpqfcTS: NVRAM read failed\n");
-
- }
- }
-
- else // WRITE
- {
-
- // NOTE: WRITE not supported & not used in released driver.
-
-
- printk("ReadWriteNRAM: can't write NVRAM; aborting write\n");
- }
-
- LEAVE("ReadWriteWWN");
- return iStatus;
-}
-
-
-
-
-
-// The following function reads or writes the entire "NVRAM" contents of
-// the I2C hardware (i.e. the NM24C03). Note that HP's 5121A (TS 66Mhz)
-// adapter does not use the NM24C03 chip, so this function only works on
-// Compaq's adapters.
-
-int CpqTsReadWriteNVRAM( PVOID pChip, PVOID buf, int Read)
-{
- PTACHYON fcChip = (PTACHYON)pChip;
-#define NVRAM_SIZE 512
- ULONG ulBuff;
- UCHAR *ucPtr = buf; // cast caller's void ptr to UCHAR array
- int iStatus=-1; // assume failure
-
-
- if( Read ) // READing NVRAM?
- {
- ulBuff = cpqfcTS_ReadNVRAM( // TRUE on success
- fcChip->Registers.TYstatus.address,
- fcChip->Registers.TYcontrol.address,
- 256, // bytes to write
- ucPtr ); // source ptr
-
-
- if( ulBuff )
- iStatus = 0; // success
- else
- {
-#ifdef DBG
- printk( "CAUTION: NVRAM read failed\n");
-#endif
- }
- } // done reading
-
- else // WRITING NVRAM
- {
-
- printk("cpqfcTS: WRITE of FC Controller's NVRAM disabled\n");
- }
-
- return iStatus;
-}
+++ /dev/null
-/* Copyright(c) 2000, Compaq Computer Corporation
- * Fibre Channel Host Bus Adapter
- * 64-bit, 66MHz PCI
- * Originally developed and tested on:
- * (front): [chip] Tachyon TS HPFC-5166A/1.2 L2C1090 ...
- * SP# P225CXCBFIEL6T, Rev XC
- * SP# 161290-001, Rev XD
- * (back): Board No. 010008-001 A/W Rev X5, FAB REV X5
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- * Written by Don Zimmerman
-*/
-// These functions control the NVRAM I2C hardware on
-// non-intelligent Fibre Host Adapters.
-// The primary purpose is to read the HBA's NVRAM to get adapter's
-// manufactured WWN to copy into Tachyon chip registers
-// Orignal source author unknown
-
-#include <linux/types.h>
-enum boolean { FALSE, TRUE } ;
-
-
-#ifndef UCHAR
-typedef __u8 UCHAR;
-#endif
-#ifndef BOOLEAN
-typedef __u8 BOOLEAN;
-#endif
-#ifndef USHORT
-typedef __u16 USHORT;
-#endif
-#ifndef ULONG
-typedef __u32 ULONG;
-#endif
-
-
-#include <linux/string.h>
-#include <linux/pci.h>
-#include <linux/delay.h>
-#include <linux/sched.h>
-#include <asm/io.h> // struct pt_regs for IRQ handler & Port I/O
-
-#include "cpqfcTSchip.h"
-
-static void tl_i2c_tx_byte( void* GPIOout, UCHAR data );
-/*static BOOLEAN tl_write_i2c_page_portion( void* GPIOin, void* GPIOout,
- USHORT startOffset, // e.g. 0x2f for WWN start
- USHORT count,
- UCHAR *buf );
-*/
-
-//
-// Tachlite GPIO2, GPIO3 (I2C) DEFINES
-// The NVRAM chip NM24C03 defines SCL (serial clock) and SDA (serial data)
-// GPIO2 drives SDA, and GPIO3 drives SCL
-//
-// Since Tachlite inverts the state of the GPIO 0-3 outputs, SET writes 0
-// and clear writes 1. The input lines (read in TL status) is NOT inverted
-// This really helps confuse the code and debugging.
-
-#define SET_DATA_HI 0x0
-#define SET_DATA_LO 0x8
-#define SET_CLOCK_HI 0x0
-#define SET_CLOCK_LO 0x4
-
-#define SENSE_DATA_HI 0x8
-#define SENSE_DATA_LO 0x0
-#define SENSE_CLOCK_HI 0x4
-#define SENSE_CLOCK_LO 0x0
-
-#define SLAVE_READ_ADDRESS 0xA1
-#define SLAVE_WRITE_ADDRESS 0xA0
-
-
-static void i2c_delay(ULONG mstime);
-static void tl_i2c_clock_pulse( UCHAR , void* GPIOout);
-static UCHAR tl_read_i2c_data( void* );
-
-
-//-----------------------------------------------------------------------------
-//
-// Name: I2C_RX_ACK
-//
-// This routine receives an acknowledge over the I2C bus.
-//
-//-----------------------------------------------------------------------------
-static unsigned short tl_i2c_rx_ack( void* GPIOin, void* GPIOout )
-{
- unsigned long value;
-
- // do clock pulse, let data line float high
- tl_i2c_clock_pulse( SET_DATA_HI, GPIOout );
-
- // slave must drive data low for acknowledge
- value = tl_read_i2c_data( GPIOin);
- if (value & SENSE_DATA_HI )
- return( FALSE );
-
- return( TRUE );
-}
-//-----------------------------------------------------------------------------
-//
-// Name: READ_I2C_REG
-//
-// This routine reads the I2C control register using the global
-// IO address stored in gpioreg.
-//
-//-----------------------------------------------------------------------------
-static UCHAR tl_read_i2c_data( void* gpioreg )
-{
- return( (UCHAR)(readl( gpioreg ) & 0x08L) ); // GPIO3
-}
-//-----------------------------------------------------------------------------
-//
-// Name: WRITE_I2C_REG
-//
-// This routine writes the I2C control register using the global
-// IO address stored in gpioreg.
-// In Tachlite, we don't want to modify other bits in TL Control reg.
-//
-//-----------------------------------------------------------------------------
-static void tl_write_i2c_reg( void* gpioregOUT, UCHAR value )
-{
- ULONG temp;
-
- // First read the register and clear out the old bits
- temp = readl( gpioregOUT ) & 0xfffffff3L;
-
- // Now or in the new data and send it back out
- writel( temp | value, gpioregOUT);
-}
-//-----------------------------------------------------------------------------
-//
-// Name: I2C_TX_START
-//
-// This routine transmits a start condition over the I2C bus.
-// 1. Set SCL (clock, GPIO2) HIGH, set SDA (data, GPIO3) HIGH,
-// wait 5us to stabilize.
-// 2. With SCL still HIGH, drive SDA low. The low transition marks
-// the start condition to NM24Cxx (the chip)
-// NOTE! In TL control reg., output 1 means chip sees LOW
-//
-//-----------------------------------------------------------------------------
-static unsigned short tl_i2c_tx_start( void* GPIOin, void* GPIOout )
-{
- unsigned short i;
- ULONG value;
-
- if ( !(tl_read_i2c_data(GPIOin) & SENSE_DATA_HI))
- {
- // start with clock high, let data float high
- tl_write_i2c_reg( GPIOout, SET_DATA_HI | SET_CLOCK_HI );
-
- // keep sending clock pulses if slave is driving data line
- for (i = 0; i < 10; i++)
- {
- tl_i2c_clock_pulse( SET_DATA_HI, GPIOout );
-
- if ( tl_read_i2c_data(GPIOin) & SENSE_DATA_HI )
- break;
- }
-
- // if he's still driving data low after 10 clocks, abort
- value = tl_read_i2c_data( GPIOin ); // read status
- if (!(value & 0x08) )
- return( FALSE );
- }
-
-
- // To START, bring data low while clock high
- tl_write_i2c_reg( GPIOout, SET_CLOCK_HI | SET_DATA_LO );
-
- i2c_delay(0);
-
- return( TRUE ); // TX start successful
-}
-//-----------------------------------------------------------------------------
-//
-// Name: I2C_TX_STOP
-//
-// This routine transmits a stop condition over the I2C bus.
-//
-//-----------------------------------------------------------------------------
-
-static unsigned short tl_i2c_tx_stop( void* GPIOin, void* GPIOout )
-{
- int i;
-
- for (i = 0; i < 10; i++)
- {
- // Send clock pulse, drive data line low
- tl_i2c_clock_pulse( SET_DATA_LO, GPIOout );
-
- // To STOP, bring data high while clock high
- tl_write_i2c_reg( GPIOout, SET_DATA_HI | SET_CLOCK_HI );
-
- // Give the data line time to float high
- i2c_delay(0);
-
- // If slave is driving data line low, there's a problem; retry
- if ( tl_read_i2c_data(GPIOin) & SENSE_DATA_HI )
- return( TRUE ); // TX STOP successful!
- }
-
- return( FALSE ); // error
-}
-//-----------------------------------------------------------------------------
-//
-// Name: I2C_TX_uchar
-//
-// This routine transmits a byte across the I2C bus.
-//
-//-----------------------------------------------------------------------------
-static void tl_i2c_tx_byte( void* GPIOout, UCHAR data )
-{
- UCHAR bit;
-
- for (bit = 0x80; bit; bit >>= 1)
- {
- if( data & bit )
- tl_i2c_clock_pulse( (UCHAR)SET_DATA_HI, GPIOout);
- else
- tl_i2c_clock_pulse( (UCHAR)SET_DATA_LO, GPIOout);
- }
-}
-//-----------------------------------------------------------------------------
-//
-// Name: I2C_RX_uchar
-//
-// This routine receives a byte across the I2C bus.
-//
-//-----------------------------------------------------------------------------
-static UCHAR tl_i2c_rx_byte( void* GPIOin, void* GPIOout )
-{
- UCHAR bit;
- UCHAR data = 0;
-
-
- for (bit = 0x80; bit; bit >>= 1) {
- // do clock pulse, let data line float high
- tl_i2c_clock_pulse( SET_DATA_HI, GPIOout );
-
- // read data line
- if ( tl_read_i2c_data( GPIOin) & 0x08 )
- data |= bit;
- }
-
- return (data);
-}
-//*****************************************************************************
-//*****************************************************************************
-// Function: read_i2c_nvram
-// Arguments: UCHAR count number of bytes to read
-// UCHAR *buf area to store the bytes read
-// Returns: 0 - failed
-// 1 - success
-//*****************************************************************************
-//*****************************************************************************
-unsigned long cpqfcTS_ReadNVRAM( void* GPIOin, void* GPIOout , USHORT count,
- UCHAR *buf )
-{
- unsigned short i;
-
- if( !( tl_i2c_tx_start(GPIOin, GPIOout) ))
- return FALSE;
-
- // Select the NVRAM for "dummy" write, to set the address
- tl_i2c_tx_byte( GPIOout , SLAVE_WRITE_ADDRESS );
- if ( !tl_i2c_rx_ack(GPIOin, GPIOout ) )
- return( FALSE );
-
- // Now send the address where we want to start reading
- tl_i2c_tx_byte( GPIOout , 0 );
- if ( !tl_i2c_rx_ack(GPIOin, GPIOout ) )
- return( FALSE );
-
- // Send a repeated start condition and select the
- // slave for reading now.
- if( tl_i2c_tx_start(GPIOin, GPIOout) )
- tl_i2c_tx_byte( GPIOout, SLAVE_READ_ADDRESS );
-
- if ( !tl_i2c_rx_ack(GPIOin, GPIOout) )
- return( FALSE );
-
- // this loop will now read out the data and store it
- // in the buffer pointed to by buf
- for ( i=0; i<count; i++)
- {
- *buf++ = tl_i2c_rx_byte(GPIOin, GPIOout);
-
- // Send ACK by holding data line low for 1 clock
- if ( i < (count-1) )
- tl_i2c_clock_pulse( 0x08, GPIOout );
- else {
- // Don't send ack for final byte
- tl_i2c_clock_pulse( SET_DATA_HI, GPIOout );
- }
- }
-
- tl_i2c_tx_stop(GPIOin, GPIOout);
-
- return( TRUE );
-}
-
-//****************************************************************
-//
-//
-//
-// routines to set and clear the data and clock bits
-//
-//
-//
-//****************************************************************
-
-static void tl_set_clock(void* gpioreg)
-{
- ULONG ret_val;
-
- ret_val = readl( gpioreg );
- ret_val &= 0xffffffFBL; // clear GPIO2 (SCL)
- writel( ret_val, gpioreg);
-}
-
-static void tl_clr_clock(void* gpioreg)
-{
- ULONG ret_val;
-
- ret_val = readl( gpioreg );
- ret_val |= SET_CLOCK_LO;
- writel( ret_val, gpioreg);
-}
-
-//*****************************************************************
-//
-//
-// This routine will advance the clock by one period
-//
-//
-//*****************************************************************
-static void tl_i2c_clock_pulse( UCHAR value, void* GPIOout )
-{
- ULONG ret_val;
-
- // clear the clock bit
- tl_clr_clock( GPIOout );
-
- i2c_delay(0);
-
-
- // read the port to preserve non-I2C bits
- ret_val = readl( GPIOout );
-
- // clear the data & clock bits
- ret_val &= 0xFFFFFFf3;
-
- // write the value passed in...
- // data can only change while clock is LOW!
- ret_val |= value; // the data
- ret_val |= SET_CLOCK_LO; // the clock
- writel( ret_val, GPIOout );
-
- i2c_delay(0);
-
-
- //set clock bit
- tl_set_clock( GPIOout);
-}
-
-
-
-
-//*****************************************************************
-//
-//
-// This routine returns the 64-bit WWN
-//
-//
-//*****************************************************************
-int cpqfcTS_GetNVRAM_data( UCHAR *wwnbuf, UCHAR *buf )
-{
- ULONG len;
- ULONG sub_len;
- ULONG ptr_inc;
- ULONG i;
- ULONG j;
- UCHAR *data_ptr;
- UCHAR z;
- UCHAR name;
- UCHAR sub_name;
- UCHAR done;
- int iReturn=0; // def. 0 offset is failure to find WWN field
-
-
-
- data_ptr = (UCHAR *)buf;
-
- done = FALSE;
- i = 0;
-
- while ( (i < 128) && (!done) )
- {
- z = data_ptr[i];\
- if ( !(z & 0x80) )
- {
- len = 1 + (z & 0x07);
-
- name = (z & 0x78) >> 3;
- if (name == 0x0F)
- done = TRUE;
- }
- else
- {
- name = z & 0x7F;
- len = 3 + data_ptr[i+1] + (data_ptr[i+2] << 8);
-
- switch (name)
- {
- case 0x0D:
- //
- j = i + 3;
- //
- if ( data_ptr[j] == 0x3b ) {
- len = 6;
- break;
- }
-
- while ( j<(i+len) ) {
- sub_name = (data_ptr[j] & 0x3f);
- sub_len = data_ptr[j+1] +
- (data_ptr[j+2] << 8);
- ptr_inc = sub_len + 3;
- switch (sub_name)
- {
- case 0x3C:
- memcpy( wwnbuf, &data_ptr[j+3], 8);
- iReturn = j+3;
- break;
- default:
- break;
- }
- j += ptr_inc;
- }
- break;
- default:
- break;
- }
- }
- //
- i += len;
- } // end while
- return iReturn;
-}
-
-
-
-
-
-// define a short 5 micro sec delay, and longer (ms) delay
-
-static void i2c_delay(ULONG mstime)
-{
- ULONG i;
-
-// NOTE: we only expect to use these delays when reading
-// our adapter's NVRAM, which happens only during adapter reset.
-// Delay technique from "Linux Device Drivers", A. Rubini
-// (1st Ed.) pg 137.
-
-// printk(" delay %lx ", mstime);
- if( mstime ) // ms delay?
- {
- // delay technique
- for( i=0; i < mstime; i++)
- udelay(1000); // 1ms per loop
-
- }
- else // 5 micro sec delay
-
- udelay( 5 ); // micro secs
-
-// printk("done\n");
-}
-
-
-
+++ /dev/null
-/* Copyright(c) 2000, Compaq Computer Corporation
- * Fibre Channel Host Bus Adapter
- * 64-bit, 66MHz PCI
- * Originally developed and tested on:
- * (front): [chip] Tachyon TS HPFC-5166A/1.2 L2C1090 ...
- * SP# P225CXCBFIEL6T, Rev XC
- * SP# 161290-001, Rev XD
- * (back): Board No. 010008-001 A/W Rev X5, FAB REV X5
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- * Written by Don Zimmerman
- * IOCTL and procfs added by Jouke Numan
- * SMP testing by Chel Van Gennip
- *
- * portions copied from:
- * QLogic CPQFCTS SCSI-FCP
- * Written by Erik H. Moe, ehm@cris.com
- * Copyright 1995, Erik H. Moe
- * Renamed and updated to 1.3.x by Michael Griffith <grif@cs.ucr.edu>
- * Chris Loveland <cwl@iol.unh.edu> to support the isp2100 and isp2200
-*/
-
-
-#define LinuxVersionCode(v, p, s) (((v)<<16)+((p)<<8)+(s))
-
-#include <linux/config.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/version.h>
-#include <linux/blkdev.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/delay.h>
-#include <linux/timer.h>
-#include <linux/init.h>
-#include <linux/ioport.h> // request_region() prototype
-#include <linux/completion.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h> // ioctl related
-#include <asm/irq.h>
-#include <linux/spinlock.h>
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include <scsi/scsi_ioctl.h>
-#include "cpqfcTSchip.h"
-#include "cpqfcTSstructs.h"
-#include "cpqfcTStrigger.h"
-
-#include "cpqfcTS.h"
-
-/* Embedded module documentation macros - see module.h */
-MODULE_AUTHOR("Compaq Computer Corporation");
-MODULE_DESCRIPTION("Driver for Compaq 64-bit/66Mhz PCI Fibre Channel HBA v. 2.5.4");
-MODULE_LICENSE("GPL");
-
-int cpqfcTS_TargetDeviceReset( Scsi_Device *ScsiDev, unsigned int reset_flags);
-
-// This struct was originally defined in
-// /usr/src/linux/include/linux/proc_fs.h
-// since it's only partially implemented, we only use first
-// few fields...
-// NOTE: proc_fs changes in 2.4 kernel
-
-#if LINUX_VERSION_CODE < LinuxVersionCode(2,3,27)
-static struct proc_dir_entry proc_scsi_cpqfcTS =
-{
- PROC_SCSI_CPQFCTS, // ushort low_ino (enumerated list)
- 7, // ushort namelen
- DEV_NAME, // const char* name
- S_IFDIR | S_IRUGO | S_IXUGO, // mode_t mode
- 2 // nlink_t nlink
- // etc. ...
-};
-
-
-#endif
-
-#if LINUX_VERSION_CODE >= LinuxVersionCode(2,4,7)
-# define CPQFC_DECLARE_COMPLETION(x) DECLARE_COMPLETION(x)
-# define CPQFC_WAITING waiting
-# define CPQFC_COMPLETE(x) complete(x)
-# define CPQFC_WAIT_FOR_COMPLETION(x) wait_for_completion(x);
-#else
-# define CPQFC_DECLARE_COMPLETION(x) DECLARE_MUTEX_LOCKED(x)
-# define CPQFC_WAITING sem
-# define CPQFC_COMPLETE(x) up(x)
-# define CPQFC_WAIT_FOR_COMPLETION(x) down(x)
-#endif
-
-static int cpqfc_alloc_private_data_pool(CPQFCHBA *hba);
-
-/* local function to load our per-HBA (local) data for chip
- registers, FC link state, all FC exchanges, etc.
-
- We allocate space and compute address offsets for the
- most frequently accessed addresses; others (like World Wide
- Name) are not necessary.
-*/
-static void Cpqfc_initHBAdata(CPQFCHBA *cpqfcHBAdata, struct pci_dev *PciDev )
-{
-
- cpqfcHBAdata->PciDev = PciDev; // copy PCI info ptr
-
- // since x86 port space is 64k, we only need the lower 16 bits
- cpqfcHBAdata->fcChip.Registers.IOBaseL =
- PciDev->resource[1].start & PCI_BASE_ADDRESS_IO_MASK;
-
- cpqfcHBAdata->fcChip.Registers.IOBaseU =
- PciDev->resource[2].start & PCI_BASE_ADDRESS_IO_MASK;
-
- // 32-bit memory addresses
- cpqfcHBAdata->fcChip.Registers.MemBase =
- PciDev->resource[3].start & PCI_BASE_ADDRESS_MEM_MASK;
-
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase =
- ioremap( PciDev->resource[3].start & PCI_BASE_ADDRESS_MEM_MASK,
- 0x200);
-
- cpqfcHBAdata->fcChip.Registers.RAMBase =
- PciDev->resource[4].start;
-
- cpqfcHBAdata->fcChip.Registers.SROMBase = // NULL for HP TS adapter
- PciDev->resource[5].start;
-
- // now the Tachlite chip registers
- // the REGISTER struct holds both the physical address & last
- // written value (some TL registers are WRITE ONLY)
-
- cpqfcHBAdata->fcChip.Registers.SFQconsumerIndex.address =
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_SFQ_CONSUMER_INDEX;
-
- cpqfcHBAdata->fcChip.Registers.ERQproducerIndex.address =
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_ERQ_PRODUCER_INDEX;
-
- // TL Frame Manager
- cpqfcHBAdata->fcChip.Registers.FMconfig.address =
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_CONFIG;
- cpqfcHBAdata->fcChip.Registers.FMcontrol.address =
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_CONTROL;
- cpqfcHBAdata->fcChip.Registers.FMstatus.address =
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_STATUS;
- cpqfcHBAdata->fcChip.Registers.FMLinkStatus1.address =
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_LINK_STAT1;
- cpqfcHBAdata->fcChip.Registers.FMLinkStatus2.address =
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_LINK_STAT2;
- cpqfcHBAdata->fcChip.Registers.FMBB_CreditZero.address =
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_BB_CREDIT0;
-
- // TL Control Regs
- cpqfcHBAdata->fcChip.Registers.TYconfig.address =
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_TACH_CONFIG;
- cpqfcHBAdata->fcChip.Registers.TYcontrol.address =
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_TACH_CONTROL;
- cpqfcHBAdata->fcChip.Registers.TYstatus.address =
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_TACH_STATUS;
- cpqfcHBAdata->fcChip.Registers.rcv_al_pa.address =
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_RCV_AL_PA;
- cpqfcHBAdata->fcChip.Registers.ed_tov.address =
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_ED_TOV;
-
-
- cpqfcHBAdata->fcChip.Registers.INTEN.address =
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase + IINTEN;
- cpqfcHBAdata->fcChip.Registers.INTPEND.address =
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase + IINTPEND;
- cpqfcHBAdata->fcChip.Registers.INTSTAT.address =
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase + IINTSTAT;
-
- DEBUG_PCI(printk(" cpqfcHBAdata->fcChip.Registers. :\n"));
- DEBUG_PCI(printk(" IOBaseL = %x\n",
- cpqfcHBAdata->fcChip.Registers.IOBaseL));
- DEBUG_PCI(printk(" IOBaseU = %x\n",
- cpqfcHBAdata->fcChip.Registers.IOBaseU));
-
- /* printk(" ioremap'd Membase: %p\n", cpqfcHBAdata->fcChip.Registers.ReMapMemBase); */
-
- DEBUG_PCI(printk(" SFQconsumerIndex.address = %p\n",
- cpqfcHBAdata->fcChip.Registers.SFQconsumerIndex.address));
- DEBUG_PCI(printk(" ERQproducerIndex.address = %p\n",
- cpqfcHBAdata->fcChip.Registers.ERQproducerIndex.address));
- DEBUG_PCI(printk(" TYconfig.address = %p\n",
- cpqfcHBAdata->fcChip.Registers.TYconfig.address));
- DEBUG_PCI(printk(" FMconfig.address = %p\n",
- cpqfcHBAdata->fcChip.Registers.FMconfig.address));
- DEBUG_PCI(printk(" FMcontrol.address = %p\n",
- cpqfcHBAdata->fcChip.Registers.FMcontrol.address));
-
- // set default options for FC controller (chip)
- cpqfcHBAdata->fcChip.Options.initiator = 1; // default: SCSI initiator
- cpqfcHBAdata->fcChip.Options.target = 0; // default: SCSI target
- cpqfcHBAdata->fcChip.Options.extLoopback = 0;// default: no loopback @GBIC
- cpqfcHBAdata->fcChip.Options.intLoopback = 0;// default: no loopback inside chip
-
- // set highest and lowest FC-PH version the adapter/driver supports
- // (NOT strict compliance)
- cpqfcHBAdata->fcChip.highest_FCPH_ver = FC_PH3;
- cpqfcHBAdata->fcChip.lowest_FCPH_ver = FC_PH43;
-
- // set function points for this controller / adapter
- cpqfcHBAdata->fcChip.ResetTachyon = CpqTsResetTachLite;
- cpqfcHBAdata->fcChip.FreezeTachyon = CpqTsFreezeTachlite;
- cpqfcHBAdata->fcChip.UnFreezeTachyon = CpqTsUnFreezeTachlite;
- cpqfcHBAdata->fcChip.CreateTachyonQues = CpqTsCreateTachLiteQues;
- cpqfcHBAdata->fcChip.DestroyTachyonQues = CpqTsDestroyTachLiteQues;
- cpqfcHBAdata->fcChip.InitializeTachyon = CpqTsInitializeTachLite;
- cpqfcHBAdata->fcChip.LaserControl = CpqTsLaserControl;
- cpqfcHBAdata->fcChip.ProcessIMQEntry = CpqTsProcessIMQEntry;
- cpqfcHBAdata->fcChip.InitializeFrameManager = CpqTsInitializeFrameManager;
- cpqfcHBAdata->fcChip.ReadWriteWWN = CpqTsReadWriteWWN;
- cpqfcHBAdata->fcChip.ReadWriteNVRAM = CpqTsReadWriteNVRAM;
-
- if (cpqfc_alloc_private_data_pool(cpqfcHBAdata) != 0) {
- printk(KERN_WARNING
- "cpqfc: unable to allocate pool for passthru ioctls. "
- "Passthru ioctls disabled.\n");
- }
-}
-
-
-/* (borrowed from linux/drivers/scsi/hosts.c) */
-static void launch_FCworker_thread(struct Scsi_Host *HostAdapter)
-{
- DECLARE_MUTEX_LOCKED(sem);
-
- CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
-
- ENTER("launch_FC_worker_thread");
-
- cpqfcHBAdata->notify_wt = &sem;
-
- /* must unlock before kernel_thread(), for it may cause a reschedule. */
- spin_unlock_irq(HostAdapter->host_lock);
- kernel_thread((int (*)(void *))cpqfcTSWorkerThread,
- (void *) HostAdapter, 0);
- /*
- * Now wait for the kernel error thread to initialize itself
-
- */
- down (&sem);
- spin_lock_irq(HostAdapter->host_lock);
- cpqfcHBAdata->notify_wt = NULL;
-
- LEAVE("launch_FC_worker_thread");
-
-}
-
-
-/* "Entry" point to discover if any supported PCI
- bus adapter can be found
-*/
-/* We're supporting:
- * Compaq 64-bit, 66MHz HBA with Tachyon TS
- * Agilent XL2
- * HP Tachyon
- */
-#define HBA_TYPES 3
-
-#ifndef PCI_DEVICE_ID_COMPAQ_
-#define PCI_DEVICE_ID_COMPAQ_TACHYON 0xa0fc
-#endif
-
-static struct SupportedPCIcards cpqfc_boards[] __initdata = {
- {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TACHYON},
- {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_TACHLITE},
- {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_TACHYON},
-};
-
-
-int cpqfcTS_detect(Scsi_Host_Template *ScsiHostTemplate)
-{
- int NumberOfAdapters=0; // how many of our PCI adapters are found?
- struct pci_dev *PciDev = NULL;
- struct Scsi_Host *HostAdapter = NULL;
- CPQFCHBA *cpqfcHBAdata = NULL;
- struct timer_list *cpqfcTStimer = NULL;
- int i;
-
- ENTER("cpqfcTS_detect");
-
-#if LINUX_VERSION_CODE < LinuxVersionCode(2,3,27)
- ScsiHostTemplate->proc_dir = &proc_scsi_cpqfcTS;
-#else
- ScsiHostTemplate->proc_name = "cpqfcTS";
-#endif
-
- for( i=0; i < HBA_TYPES; i++)
- {
- // look for all HBAs of each type
-
- while((PciDev = pci_find_device(cpqfc_boards[i].vendor_id,
- cpqfc_boards[i].device_id, PciDev)))
- {
-
- if (pci_enable_device(PciDev)) {
- printk(KERN_ERR
- "cpqfc: can't enable PCI device at %s\n", pci_name(PciDev));
- goto err_continue;
- }
-
- if (pci_set_dma_mask(PciDev, CPQFCTS_DMA_MASK) != 0) {
- printk(KERN_WARNING
- "cpqfc: HBA cannot support required DMA mask, skipping.\n");
- goto err_disable_dev;
- }
-
- // NOTE: (kernel 2.2.12-32) limits allocation to 128k bytes...
- /* printk(" scsi_register allocating %d bytes for FC HBA\n",
- (ULONG)sizeof(CPQFCHBA)); */
-
- HostAdapter = scsi_register( ScsiHostTemplate, sizeof( CPQFCHBA ) );
-
- if(HostAdapter == NULL) {
- printk(KERN_WARNING
- "cpqfc: can't register SCSI HBA, skipping.\n");
- goto err_disable_dev;
- }
- DEBUG_PCI( printk(" HBA found!\n"));
- DEBUG_PCI( printk(" HostAdapter->PciDev->irq = %u\n", PciDev->irq) );
- DEBUG_PCI(printk(" PciDev->baseaddress[0]= %lx\n",
- PciDev->resource[0].start));
- DEBUG_PCI(printk(" PciDev->baseaddress[1]= %lx\n",
- PciDev->resource[1].start));
- DEBUG_PCI(printk(" PciDev->baseaddress[2]= %lx\n",
- PciDev->resource[2].start));
- DEBUG_PCI(printk(" PciDev->baseaddress[3]= %lx\n",
- PciDev->resource[3].start));
-
- HostAdapter->irq = PciDev->irq; // copy for Scsi layers
-
- // HP Tachlite uses two (255-byte) ranges of Port I/O (lower & upper),
- // for a total I/O port address space of 512 bytes.
- // mask out the I/O port address (lower) & record
- HostAdapter->io_port = (unsigned int)
- PciDev->resource[1].start & PCI_BASE_ADDRESS_IO_MASK;
- HostAdapter->n_io_port = 0xff;
-
- // i.e., expect 128 targets (arbitrary number), while the
- // RA-4000 supports 32 LUNs
- HostAdapter->max_id = 0; // incremented as devices log in
- HostAdapter->max_lun = CPQFCTS_MAX_LUN; // LUNs per FC device
- HostAdapter->max_channel = CPQFCTS_MAX_CHANNEL; // multiple busses?
-
- // get the pointer to our HBA specific data... (one for
- // each HBA on the PCI bus(ses)).
- cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
-
- // make certain our data struct is clear
- memset( cpqfcHBAdata, 0, sizeof( CPQFCHBA ) );
-
-
- // initialize our HBA info
- cpqfcHBAdata->HBAnum = NumberOfAdapters;
-
- cpqfcHBAdata->HostAdapter = HostAdapter; // back ptr
- Cpqfc_initHBAdata( cpqfcHBAdata, PciDev ); // fill MOST fields
-
- cpqfcHBAdata->HBAnum = NumberOfAdapters;
- spin_lock_init(&cpqfcHBAdata->hba_spinlock);
-
- // request necessary resources and check for conflicts
- if( request_irq( HostAdapter->irq,
- cpqfcTS_intr_handler,
- SA_INTERRUPT | SA_SHIRQ,
- DEV_NAME,
- HostAdapter) )
- {
- printk(KERN_WARNING "cpqfc: IRQ %u already used\n", HostAdapter->irq);
- goto err_unregister;
- }
-
- // Since we have two 256-byte I/O port ranges (upper
- // and lower), check them both
- if( !request_region( cpqfcHBAdata->fcChip.Registers.IOBaseU,
- 0xff, DEV_NAME ) )
- {
- printk(KERN_WARNING "cpqfc: address in use: %x\n",
- cpqfcHBAdata->fcChip.Registers.IOBaseU);
- goto err_free_irq;
- }
-
- if( !request_region( cpqfcHBAdata->fcChip.Registers.IOBaseL,
- 0xff, DEV_NAME ) )
- {
- printk(KERN_WARNING "cpqfc: address in use: %x\n",
- cpqfcHBAdata->fcChip.Registers.IOBaseL);
- goto err_release_region_U;
- }
-
- // OK, we have grabbed everything we need now.
- DEBUG_PCI(printk(" Reserved 255 I/O addresses @ %x\n",
- cpqfcHBAdata->fcChip.Registers.IOBaseL ));
- DEBUG_PCI(printk(" Reserved 255 I/O addresses @ %x\n",
- cpqfcHBAdata->fcChip.Registers.IOBaseU ));
-
-
-
- // start our kernel worker thread
-
- spin_lock_irq(HostAdapter->host_lock);
- launch_FCworker_thread(HostAdapter);
-
-
- // start our TimerTask...
-
- cpqfcTStimer = &cpqfcHBAdata->cpqfcTStimer;
-
- init_timer( cpqfcTStimer); // Linux clears next/prev values
- cpqfcTStimer->expires = jiffies + HZ; // one second
- cpqfcTStimer->data = (unsigned long)cpqfcHBAdata; // this adapter
- cpqfcTStimer->function = cpqfcTSheartbeat; // handles timeouts, housekeeping
-
- add_timer( cpqfcTStimer); // give it to Linux
-
-
- // now initialize our hardware...
- if (cpqfcHBAdata->fcChip.InitializeTachyon( cpqfcHBAdata, 1,1)) {
- printk(KERN_WARNING "cpqfc: initialization of HBA hardware failed.\n");
- goto err_release_region_L;
- }
-
- cpqfcHBAdata->fcStatsTime = jiffies; // (for FC Statistics delta)
-
- // give our HBA time to initialize and login current devices...
- {
- // The Brocade switch (e.g. 2400, 2010, etc.) as of March 2000,
- // has the following algorithm for FL_Port startup:
- // Time(sec) Action
- // 0: Device Plugin and LIP(F7,F7) transmission
- // 1.0 LIP incoming
- // 1.027 LISA incoming, no CLS! (link not up)
- // 1.028 NOS incoming (switch test for N_Port)
- // 1.577 ED_TOV expired, transmit LIPs again
- // 3.0 LIP(F8,F7) incoming (switch passes Tach Prim.Sig)
- // 3.028 LILP received, link up, FLOGI starts
- // slowest(worst) case, measured on 1Gb Finisar GT analyzer
-
- unsigned long stop_time;
-
- spin_unlock_irq(HostAdapter->host_lock);
- stop_time = jiffies + 4*HZ;
- while ( time_before(jiffies, stop_time) )
- schedule(); // (our worker task needs to run)
-
- }
-
- spin_lock_irq(HostAdapter->host_lock);
- NumberOfAdapters++;
- spin_unlock_irq(HostAdapter->host_lock);
-
- continue;
-
-err_release_region_L:
- release_region( cpqfcHBAdata->fcChip.Registers.IOBaseL, 0xff );
-err_release_region_U:
- release_region( cpqfcHBAdata->fcChip.Registers.IOBaseU, 0xff );
-err_free_irq:
- free_irq( HostAdapter->irq, HostAdapter);
-err_unregister:
- scsi_unregister( HostAdapter);
-err_disable_dev:
- pci_disable_device( PciDev );
-err_continue:
- continue;
- } // end of while()
- }
-
- LEAVE("cpqfcTS_detect");
-
- return NumberOfAdapters;
-}
-
-#ifdef SUPPORT_RESET
-static void my_ioctl_done (Scsi_Cmnd * SCpnt)
-{
- struct request * req;
-
- req = SCpnt->request;
- req->rq_status = RQ_SCSI_DONE; /* Busy, but indicate request done */
-
- if (req->CPQFC_WAITING != NULL)
- CPQFC_COMPLETE(req->CPQFC_WAITING);
-}
-#endif
-
-static int cpqfc_alloc_private_data_pool(CPQFCHBA *hba)
-{
- hba->private_data_bits = NULL;
- hba->private_data_pool = NULL;
- hba->private_data_bits =
- kmalloc(((CPQFC_MAX_PASSTHRU_CMDS+BITS_PER_LONG-1) /
- BITS_PER_LONG)*sizeof(unsigned long),
- GFP_KERNEL);
- if (hba->private_data_bits == NULL)
- return -1;
- memset(hba->private_data_bits, 0,
- ((CPQFC_MAX_PASSTHRU_CMDS+BITS_PER_LONG-1) /
- BITS_PER_LONG)*sizeof(unsigned long));
- hba->private_data_pool = kmalloc(sizeof(cpqfc_passthru_private_t) *
- CPQFC_MAX_PASSTHRU_CMDS, GFP_KERNEL);
- if (hba->private_data_pool == NULL) {
- kfree(hba->private_data_bits);
- hba->private_data_bits = NULL;
- return -1;
- }
- return 0;
-}
-
-static void cpqfc_free_private_data_pool(CPQFCHBA *hba)
-{
- kfree(hba->private_data_bits);
- kfree(hba->private_data_pool);
-}
-
-int is_private_data_of_cpqfc(CPQFCHBA *hba, void *pointer)
-{
- /* Is pointer within our private data pool?
- We use Scsi_Request->upper_private_data (normally
- reserved for upper layer drivers, e.g. the sg driver)
- We check to see if the pointer is ours by looking at
- its address. Is this ok? Hmm, it occurs to me that
- a user app might do something bad by using sg to send
- a cpqfc passthrough ioctl with upper_data_private
- forged to be somewhere in our pool..., though they'd
- normally have to be root already to do this. */
-
- return (pointer != NULL &&
- pointer >= (void *) hba->private_data_pool &&
- pointer < (void *) hba->private_data_pool +
- sizeof(*hba->private_data_pool) *
- CPQFC_MAX_PASSTHRU_CMDS);
-}
-
-cpqfc_passthru_private_t *cpqfc_alloc_private_data(CPQFCHBA *hba)
-{
- int i;
-
- do {
- i = find_first_zero_bit(hba->private_data_bits,
- CPQFC_MAX_PASSTHRU_CMDS);
- if (i == CPQFC_MAX_PASSTHRU_CMDS)
- return NULL;
- } while ( test_and_set_bit(i & (BITS_PER_LONG - 1),
- hba->private_data_bits+(i/BITS_PER_LONG)) != 0);
- return &hba->private_data_pool[i];
-}
-
-void cpqfc_free_private_data(CPQFCHBA *hba, cpqfc_passthru_private_t *data)
-{
- int i;
- i = data - hba->private_data_pool;
- clear_bit(i&(BITS_PER_LONG-1),
- hba->private_data_bits+(i/BITS_PER_LONG));
-}
-
-int cpqfcTS_ioctl( struct scsi_device *ScsiDev, int Cmnd, void *arg)
-{
- int result = 0;
- struct Scsi_Host *HostAdapter = ScsiDev->host;
- CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- PFC_LOGGEDIN_PORT pLoggedInPort = NULL;
- struct scsi_cmnd *DumCmnd;
- int i, j;
- VENDOR_IOCTL_REQ ioc;
- cpqfc_passthru_t *vendor_cmd;
- Scsi_Device *SDpnt;
- Scsi_Request *ScsiPassThruReq;
- cpqfc_passthru_private_t *privatedata;
-
- ENTER("cpqfcTS_ioctl ");
-
- // printk("ioctl CMND %d", Cmnd);
- switch (Cmnd) {
- // Passthrough provides a mechanism to bypass the RAID
- // or other controller and talk directly to the devices
- // (e.g. physical disk drive)
- // Passthrough commands, unfortunately, tend to be vendor
- // specific; this is tailored to COMPAQ's RAID (RA4x00)
- case CPQFCTS_SCSI_PASSTHRU:
- {
- void *buf = NULL; // for kernel space buffer for user data
-
- /* Check that our pool got allocated ok. */
- if (cpqfcHBAdata->private_data_pool == NULL)
- return -ENOMEM;
-
- if( !arg)
- return -EINVAL;
-
- // must be super user to send stuff directly to the
- // controller and/or physical drives...
- if( !capable(CAP_SYS_RAWIO) )
- return -EPERM;
-
- // copy the caller's struct to our space.
- if( copy_from_user( &ioc, arg, sizeof( VENDOR_IOCTL_REQ)))
- return( -EFAULT);
-
- vendor_cmd = ioc.argp; // i.e., CPQ specific command struct
-
- // If necessary, grab a kernel/DMA buffer
- if( vendor_cmd->len)
- {
- buf = kmalloc( vendor_cmd->len, GFP_KERNEL);
- if( !buf)
- return -ENOMEM;
- }
- // Now build a Scsi_Request to pass down...
- ScsiPassThruReq = scsi_allocate_request(ScsiDev, GFP_KERNEL);
- if (ScsiPassThruReq == NULL) {
- kfree(buf);
- return -ENOMEM;
- }
- ScsiPassThruReq->upper_private_data =
- cpqfc_alloc_private_data(cpqfcHBAdata);
- if (ScsiPassThruReq->upper_private_data == NULL) {
- kfree(buf);
- scsi_release_request(ScsiPassThruReq); // "de-allocate"
- return -ENOMEM;
- }
-
- if (vendor_cmd->rw_flag == VENDOR_WRITE_OPCODE) {
- if (vendor_cmd->len) { // Need data from user?
- if (copy_from_user(buf, vendor_cmd->bufp,
- vendor_cmd->len)) {
- kfree(buf);
- cpqfc_free_private_data(cpqfcHBAdata,
- ScsiPassThruReq->upper_private_data);
- scsi_release_request(ScsiPassThruReq);
- return( -EFAULT);
- }
- }
- ScsiPassThruReq->sr_data_direction = DMA_TO_DEVICE;
- } else if (vendor_cmd->rw_flag == VENDOR_READ_OPCODE) {
- ScsiPassThruReq->sr_data_direction = DMA_FROM_DEVICE;
- } else
- // maybe this means a bug in the user app
- ScsiPassThruReq->sr_data_direction = DMA_BIDIRECTIONAL;
-
- ScsiPassThruReq->sr_cmd_len = 0; // set correctly by scsi_do_req()
- ScsiPassThruReq->sr_sense_buffer[0] = 0;
- ScsiPassThruReq->sr_sense_buffer[2] = 0;
-
- // We copy the scheme used by sd.c:spinup_disk() to submit commands
- // to our own HBA. We do this in order to stall the
- // thread calling the IOCTL until it completes, and use
- // the same "_quecommand" function for synchronizing
- // FC Link events with our "worker thread".
-
- privatedata = ScsiPassThruReq->upper_private_data;
- privatedata->bus = vendor_cmd->bus;
- privatedata->pdrive = vendor_cmd->pdrive;
-
- // eventually gets us to our own _quecommand routine
- scsi_wait_req(ScsiPassThruReq,
- &vendor_cmd->cdb[0], buf, vendor_cmd->len,
- 10*HZ, // timeout
- 1); // retries
- result = ScsiPassThruReq->sr_result;
-
- // copy any sense data back to caller
- if( result != 0 )
- {
- memcpy( vendor_cmd->sense_data, // see struct def - size=40
- ScsiPassThruReq->sr_sense_buffer,
- sizeof(ScsiPassThruReq->sr_sense_buffer) <
- sizeof(vendor_cmd->sense_data) ?
- sizeof(ScsiPassThruReq->sr_sense_buffer) :
- sizeof(vendor_cmd->sense_data)
- );
- }
- SDpnt = ScsiPassThruReq->sr_device;
- /* upper_private_data is already freed in call_scsi_done() */
- scsi_release_request(ScsiPassThruReq); // "de-allocate"
- ScsiPassThruReq = NULL;
-
- // need to pass data back to user (space)?
- if( (vendor_cmd->rw_flag == VENDOR_READ_OPCODE) &&
- vendor_cmd->len )
- if( copy_to_user( vendor_cmd->bufp, buf, vendor_cmd->len))
- result = -EFAULT;
-
- kfree(buf);
-
- return result;
- }
-
- case CPQFCTS_GETPCIINFO:
- {
- cpqfc_pci_info_struct pciinfo;
-
- if( !arg)
- return -EINVAL;
-
-
-
- pciinfo.bus = cpqfcHBAdata->PciDev->bus->number;
- pciinfo.dev_fn = cpqfcHBAdata->PciDev->devfn;
- pciinfo.board_id = cpqfcHBAdata->PciDev->device |
- (cpqfcHBAdata->PciDev->vendor <<16);
-
- if(copy_to_user( arg, &pciinfo, sizeof(cpqfc_pci_info_struct)))
- return( -EFAULT);
- return 0;
- }
-
- case CPQFCTS_GETDRIVVER:
- {
- DriverVer_type DriverVer =
- CPQFCTS_DRIVER_VER( VER_MAJOR,VER_MINOR,VER_SUBMINOR);
-
- if( !arg)
- return -EINVAL;
-
- if(copy_to_user( arg, &DriverVer, sizeof(DriverVer)))
- return( -EFAULT);
- return 0;
- }
-
-
-
- case CPQFC_IOCTL_FC_TARGET_ADDRESS:
- // can we find an FC device mapping to this SCSI target?
-/* DumCmnd.channel = ScsiDev->channel; */ // For searching
-/* DumCmnd.target = ScsiDev->id; */
-/* DumCmnd.lun = ScsiDev->lun; */
-
- DumCmnd = scsi_get_command (ScsiDev, GFP_KERNEL);
- if (!DumCmnd)
- return -ENOMEM;
-
- pLoggedInPort = fcFindLoggedInPort( fcChip,
- DumCmnd, // search Scsi Nexus
- 0, // DON'T search linked list for FC port id
- NULL, // DON'T search linked list for FC WWN
- NULL); // DON'T care about end of list
- scsi_put_command (DumCmnd);
- if (pLoggedInPort == NULL) {
- result = -ENXIO;
- break;
- }
- result = access_ok(VERIFY_WRITE, arg, sizeof(Scsi_FCTargAddress)) ? 0 : -EFAULT;
- if (result) break;
-
- put_user(pLoggedInPort->port_id,
- &((Scsi_FCTargAddress *) arg)->host_port_id);
-
- for( i=3,j=0; i>=0; i--) // copy the LOGIN port's WWN
- put_user(pLoggedInPort->u.ucWWN[i],
- &((Scsi_FCTargAddress *) arg)->host_wwn[j++]);
- for( i=7; i>3; i--) // copy the LOGIN port's WWN
- put_user(pLoggedInPort->u.ucWWN[i],
- &((Scsi_FCTargAddress *) arg)->host_wwn[j++]);
- break;
-
-
- case CPQFC_IOCTL_FC_TDR:
-
- result = cpqfcTS_TargetDeviceReset( ScsiDev, 0);
-
- break;
-
-
-
-
- default:
- result = -EINVAL;
- break;
- }
-
- LEAVE("cpqfcTS_ioctl");
- return result;
-}
-
-
-/* "Release" the Host Bus Adapter...
- disable interrupts, stop the HBA, release the interrupt,
- and free all resources */
-
-int cpqfcTS_release(struct Scsi_Host *HostAdapter)
-{
- CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
-
-
- ENTER("cpqfcTS_release");
-
- DEBUG_PCI( printk(" cpqfcTS: delete timer...\n"));
- del_timer( &cpqfcHBAdata->cpqfcTStimer);
-
- // disable the hardware...
- DEBUG_PCI( printk(" disable hardware, destroy queues, free mem\n"));
- cpqfcHBAdata->fcChip.ResetTachyon( cpqfcHBAdata, CLEAR_FCPORTS);
-
- // kill kernel thread
- if( cpqfcHBAdata->worker_thread ) // (only if exists)
- {
- DECLARE_MUTEX_LOCKED(sem); // synchronize thread kill
-
- cpqfcHBAdata->notify_wt = &sem;
- DEBUG_PCI( printk(" killing kernel thread\n"));
- send_sig( SIGKILL, cpqfcHBAdata->worker_thread, 1);
- down( &sem);
- cpqfcHBAdata->notify_wt = NULL;
-
- }
-
- cpqfc_free_private_data_pool(cpqfcHBAdata);
- // free Linux resources
- DEBUG_PCI( printk(" cpqfcTS: freeing resources...\n"));
- free_irq( HostAdapter->irq, HostAdapter);
- scsi_unregister( HostAdapter);
- release_region( cpqfcHBAdata->fcChip.Registers.IOBaseL, 0xff);
- release_region( cpqfcHBAdata->fcChip.Registers.IOBaseU, 0xff);
- /* we get "vfree: bad address" executing this - need to investigate...
- if( (void*)((unsigned long)cpqfcHBAdata->fcChip.Registers.MemBase) !=
- cpqfcHBAdata->fcChip.Registers.ReMapMemBase)
- vfree( cpqfcHBAdata->fcChip.Registers.ReMapMemBase);
-*/
- pci_disable_device( cpqfcHBAdata->PciDev);
-
- LEAVE("cpqfcTS_release");
- return 0;
-}
-
-
-const char * cpqfcTS_info(struct Scsi_Host *HostAdapter)
-{
- static char buf[300];
- CPQFCHBA *cpqfcHBA;
- int BusSpeed, BusWidth;
-
- // get the pointer to our Scsi layer HBA buffer
- cpqfcHBA = (CPQFCHBA *)HostAdapter->hostdata;
-
- BusWidth = (cpqfcHBA->fcChip.Registers.PCIMCTR &0x4) > 0 ?
- 64 : 32;
-
- if( cpqfcHBA->fcChip.Registers.TYconfig.value & 0x80000000)
- BusSpeed = 66;
- else
- BusSpeed = 33;
-
- sprintf(buf,
-"%s: WWN %08X%08X\n on PCI bus %d device 0x%02x irq %d IObaseL 0x%x, MEMBASE 0x%x\nPCI bus width %d bits, bus speed %d MHz\nFCP-SCSI Driver v%d.%d.%d",
- cpqfcHBA->fcChip.Name,
- cpqfcHBA->fcChip.Registers.wwn_hi,
- cpqfcHBA->fcChip.Registers.wwn_lo,
- cpqfcHBA->PciDev->bus->number,
- cpqfcHBA->PciDev->device,
- HostAdapter->irq,
- cpqfcHBA->fcChip.Registers.IOBaseL,
- cpqfcHBA->fcChip.Registers.MemBase,
- BusWidth,
- BusSpeed,
- VER_MAJOR, VER_MINOR, VER_SUBMINOR
-);
-
-
- cpqfcTSDecodeGBICtype( &cpqfcHBA->fcChip, &buf[ strlen(buf)]);
- cpqfcTSGetLPSM( &cpqfcHBA->fcChip, &buf[ strlen(buf)]);
- return buf;
-}
-
-//
-// /proc/scsi support. The following routines allow us to do 'normal'
-// sprintf like calls to return the currently requested piece (buflenght
-// chars, starting at bufoffset) of the file. Although procfs allows for
-// a 1 Kb bytes overflow after te supplied buffer, I consider it bad
-// programming to use it to make programming a little simpler. This piece
-// of coding is borrowed from ncr53c8xx.c with some modifications
-//
-struct info_str
-{
- char *buffer; // Pointer to output buffer
- int buflength; // It's length
- int bufoffset; // File offset corresponding with buf[0]
- int buffillen; // Current filled length
- int filpos; // Current file offset
-};
-
-static void copy_mem_info(struct info_str *info, char *data, int datalen)
-{
-
- if (info->filpos < info->bufoffset) { // Current offset before buffer offset
- if (info->filpos + datalen <= info->bufoffset) {
- info->filpos += datalen; // Discard if completely before buffer
- return;
- } else { // Partial copy, set to begin
- data += (info->bufoffset - info->filpos);
- datalen -= (info->bufoffset - info->filpos);
- info->filpos = info->bufoffset;
- }
- }
-
- info->filpos += datalen; // Update current offset
-
- if (info->buffillen == info->buflength) // Buffer full, discard
- return;
-
- if (info->buflength - info->buffillen < datalen) // Overflows buffer ?
- datalen = info->buflength - info->buffillen;
-
- memcpy(info->buffer + info->buffillen, data, datalen);
- info->buffillen += datalen;
-}
-
-static int copy_info(struct info_str *info, char *fmt, ...)
-{
- va_list args;
- char buf[400];
- int len;
-
- va_start(args, fmt);
- len = vsprintf(buf, fmt, args);
- va_end(args);
-
- copy_mem_info(info, buf, len);
- return len;
-}
-
-
-// Routine to get data for /proc RAM filesystem
-//
-int cpqfcTS_proc_info (struct Scsi_Host *host, char *buffer, char **start, off_t offset, int length,
- int inout)
-{
- struct scsi_cmnd *DumCmnd;
- struct scsi_device *ScsiDev;
- int Chan, Targ, i;
- struct info_str info;
- CPQFCHBA *cpqfcHBA;
- PTACHYON fcChip;
- PFC_LOGGEDIN_PORT pLoggedInPort;
- char buf[81];
-
- if (inout) return -EINVAL;
-
- // get the pointer to our Scsi layer HBA buffer
- cpqfcHBA = (CPQFCHBA *)host->hostdata;
- fcChip = &cpqfcHBA->fcChip;
-
- *start = buffer;
-
- info.buffer = buffer;
- info.buflength = length;
- info.bufoffset = offset;
- info.filpos = 0;
- info.buffillen = 0;
- copy_info(&info, "Driver version = %d.%d.%d", VER_MAJOR, VER_MINOR, VER_SUBMINOR);
- cpqfcTSDecodeGBICtype( &cpqfcHBA->fcChip, &buf[0]);
- cpqfcTSGetLPSM( &cpqfcHBA->fcChip, &buf[ strlen(buf)]);
- copy_info(&info, "%s\n", buf);
-
-#define DISPLAY_WWN_INFO
-#ifdef DISPLAY_WWN_INFO
- ScsiDev = scsi_get_host_dev (host);
- if (!ScsiDev)
- return -ENOMEM;
- DumCmnd = scsi_get_command (ScsiDev, GFP_KERNEL);
- if (!DumCmnd) {
- scsi_free_host_dev (ScsiDev);
- return -ENOMEM;
- }
- copy_info(&info, "WWN database: (\"port_id: 000000\" means disconnected)\n");
- for ( Chan=0; Chan <= host->max_channel; Chan++) {
- DumCmnd->device->channel = Chan;
- for (Targ=0; Targ <= host->max_id; Targ++) {
- DumCmnd->device->id = Targ;
- if ((pLoggedInPort = fcFindLoggedInPort( fcChip,
- DumCmnd, // search Scsi Nexus
- 0, // DON'T search list for FC port id
- NULL, // DON'T search list for FC WWN
- NULL))){ // DON'T care about end of list
- copy_info(&info, "Host: scsi%d Channel: %02d TargetId: %02d -> WWN: ",
- host->host_no, Chan, Targ);
- for( i=3; i>=0; i--) // copy the LOGIN port's WWN
- copy_info(&info, "%02X", pLoggedInPort->u.ucWWN[i]);
- for( i=7; i>3; i--) // copy the LOGIN port's WWN
- copy_info(&info, "%02X", pLoggedInPort->u.ucWWN[i]);
- copy_info(&info, " port_id: %06X\n", pLoggedInPort->port_id);
- }
- }
- }
-
- scsi_put_command (DumCmnd);
- scsi_free_host_dev (ScsiDev);
-#endif
-
-
-
-
-
-// Unfortunately, the proc_info buffer isn't big enough
-// for everything we would like...
-// For FC stats, compile this and turn off WWN stuff above
-//#define DISPLAY_FC_STATS
-#ifdef DISPLAY_FC_STATS
-// get the Fibre Channel statistics
- {
- int DeltaSecs = (jiffies - cpqfcHBA->fcStatsTime) / HZ;
- int days,hours,minutes,secs;
-
- days = DeltaSecs / (3600*24); // days
- hours = (DeltaSecs% (3600*24)) / 3600; // hours
- minutes = (DeltaSecs%3600 /60); // minutes
- secs = DeltaSecs%60; // secs
-copy_info( &info, "Fibre Channel Stats (time dd:hh:mm:ss %02u:%02u:%02u:%02u\n",
- days, hours, minutes, secs);
- }
-
- cpqfcHBA->fcStatsTime = jiffies; // (for next delta)
-
- copy_info( &info, " LinkUp %9u LinkDown %u\n",
- fcChip->fcStats.linkUp, fcChip->fcStats.linkDown);
-
- copy_info( &info, " Loss of Signal %9u Loss of Sync %u\n",
- fcChip->fcStats.LossofSignal, fcChip->fcStats.LossofSync);
-
- copy_info( &info, " Discarded Frames %9u Bad CRC Frame %u\n",
- fcChip->fcStats.Dis_Frm, fcChip->fcStats.Bad_CRC);
-
- copy_info( &info, " TACH LinkFailTX %9u TACH LinkFailRX %u\n",
- fcChip->fcStats.linkFailTX, fcChip->fcStats.linkFailRX);
-
- copy_info( &info, " TACH RxEOFa %9u TACH Elastic Store %u\n",
- fcChip->fcStats.Rx_EOFa, fcChip->fcStats.e_stores);
-
- copy_info( &info, " BufferCreditWait %9uus TACH FM Inits %u\n",
- fcChip->fcStats.BB0_Timer*10, fcChip->fcStats.FMinits );
-
- copy_info( &info, " FC-2 Timeouts %9u FC-2 Logouts %u\n",
- fcChip->fcStats.timeouts, fcChip->fcStats.logouts);
-
- copy_info( &info, " FC-2 Aborts %9u FC-4 Aborts %u\n",
- fcChip->fcStats.FC2aborted, fcChip->fcStats.FC4aborted);
-
- // clear the counters
- cpqfcTSClearLinkStatusCounters( fcChip);
-#endif
-
- return info.buffillen;
-}
-
-
-#if DEBUG_CMND
-
-UCHAR *ScsiToAscii( UCHAR ScsiCommand)
-{
-
-/*++
-
-Routine Description:
-
- Converts a SCSI command to a text string for debugging purposes.
-
-
-Arguments:
-
- ScsiCommand -- hex value SCSI Command
-
-
-Return Value:
-
- An ASCII, null-terminated string if found, else returns NULL.
-
-Original code from M. McGowen, Compaq
---*/
-
-
- switch (ScsiCommand)
- {
- case 0x00:
- return( "Test Unit Ready" );
-
- case 0x01:
- return( "Rezero Unit or Rewind" );
-
- case 0x02:
- return( "Request Block Address" );
-
- case 0x03:
- return( "Requese Sense" );
-
- case 0x04:
- return( "Format Unit" );
-
- case 0x05:
- return( "Read Block Limits" );
-
- case 0x07:
- return( "Reassign Blocks" );
-
- case 0x08:
- return( "Read (6)" );
-
- case 0x0a:
- return( "Write (6)" );
-
- case 0x0b:
- return( "Seek (6)" );
-
- case 0x12:
- return( "Inquiry" );
-
- case 0x15:
- return( "Mode Select (6)" );
-
- case 0x16:
- return( "Reserve" );
-
- case 0x17:
- return( "Release" );
-
- case 0x1a:
- return( "ModeSen(6)" );
-
- case 0x1b:
- return( "Start/Stop Unit" );
-
- case 0x1c:
- return( "Receive Diagnostic Results" );
-
- case 0x1d:
- return( "Send Diagnostic" );
-
- case 0x25:
- return( "Read Capacity" );
-
- case 0x28:
- return( "Read (10)" );
-
- case 0x2a:
- return( "Write (10)" );
-
- case 0x2b:
- return( "Seek (10)" );
-
- case 0x2e:
- return( "Write and Verify" );
-
- case 0x2f:
- return( "Verify" );
-
- case 0x34:
- return( "Pre-Fetch" );
-
- case 0x35:
- return( "Synchronize Cache" );
-
- case 0x37:
- return( "Read Defect Data (10)" );
-
- case 0x3b:
- return( "Write Buffer" );
-
- case 0x3c:
- return( "Read Buffer" );
-
- case 0x3e:
- return( "Read Long" );
-
- case 0x3f:
- return( "Write Long" );
-
- case 0x41:
- return( "Write Same" );
-
- case 0x4c:
- return( "Log Select" );
-
- case 0x4d:
- return( "Log Sense" );
-
- case 0x56:
- return( "Reserve (10)" );
-
- case 0x57:
- return( "Release (10)" );
-
- case 0xa0:
- return( "ReportLuns" );
-
- case 0xb7:
- return( "Read Defect Data (12)" );
-
- case 0xca:
- return( "Peripheral Device Addressing SCSI Passthrough" );
-
- case 0xcb:
- return( "Compaq Array Firmware Passthrough" );
-
- default:
- return( NULL );
- }
-
-} // end ScsiToAscii()
-
-void cpqfcTS_print_scsi_cmd(Scsi_Cmnd * cmd)
-{
-
-printk("cpqfcTS: (%s) chnl 0x%02x, trgt = 0x%02x, lun = 0x%02x, cmd_len = 0x%02x\n",
- ScsiToAscii( cmd->cmnd[0]), cmd->channel, cmd->target, cmd->lun, cmd->cmd_len);
-
-if( cmd->cmnd[0] == 0) // Test Unit Ready?
-{
- int i;
-
- printk("Cmnd->request_bufflen = 0x%X, ->use_sg = %d, ->bufflen = %d\n",
- cmd->request_bufflen, cmd->use_sg, cmd->bufflen);
- printk("Cmnd->request_buffer = %p, ->sglist_len = %d, ->buffer = %p\n",
- cmd->request_buffer, cmd->sglist_len, cmd->buffer);
- for (i = 0; i < cmd->cmd_len; i++)
- printk("0x%02x ", cmd->cmnd[i]);
- printk("\n");
-}
-
-}
-
-#endif /* DEBUG_CMND */
-
-
-
-
-static void QueCmndOnBoardLock( CPQFCHBA *cpqfcHBAdata, Scsi_Cmnd *Cmnd)
-{
- int i;
-
- for( i=0; i< CPQFCTS_REQ_QUEUE_LEN; i++)
- { // find spare slot
- if( cpqfcHBAdata->BoardLockCmnd[i] == NULL )
- {
- cpqfcHBAdata->BoardLockCmnd[i] = Cmnd;
-// printk(" BoardLockCmnd[%d] %p Queued, chnl/target/lun %d/%d/%d\n",
-// i,Cmnd, Cmnd->channel, Cmnd->target, Cmnd->lun);
- break;
- }
- }
- if( i >= CPQFCTS_REQ_QUEUE_LEN)
- {
- printk(" cpqfcTS WARNING: Lost Cmnd %p on BoardLock Q full!", Cmnd);
- }
-
-}
-
-
-static void QueLinkDownCmnd( CPQFCHBA *cpqfcHBAdata, Scsi_Cmnd *Cmnd)
-{
- int indx;
-
- // Remember the command ptr so we can return; we'll complete when
- // the device comes back, causing immediate retry
- for( indx=0; indx < CPQFCTS_REQ_QUEUE_LEN; indx++)//, SCptr++)
- {
- if( cpqfcHBAdata->LinkDnCmnd[indx] == NULL ) // available?
- {
-#ifdef DUMMYCMND_DBG
- printk(" @add Cmnd %p to LnkDnCmnd[%d]@ ", Cmnd,indx);
-#endif
- cpqfcHBAdata->LinkDnCmnd[indx] = Cmnd;
- break;
- }
- }
-
- if( indx >= CPQFCTS_REQ_QUEUE_LEN ) // no space for Cmnd??
- {
- // this will result in an _abort call later (with possible trouble)
- printk("no buffer for LinkDnCmnd!! %p\n", Cmnd);
- }
-}
-
-
-
-
-
-// The file <scsi/scsi_host.h> says not to call scsi_done from
-// inside _queuecommand, so we'll do it from the heartbeat timer
-// (clarification: Turns out it's ok to call scsi_done from queuecommand
-// for cases that don't go to the hardware like scsi cmds destined
-// for LUNs we know don't exist, so this code might be simplified...)
-
-static void QueBadTargetCmnd( CPQFCHBA *cpqfcHBAdata, Scsi_Cmnd *Cmnd)
-{
- int i;
- // printk(" can't find target %d\n", Cmnd->target);
-
- for( i=0; i< CPQFCTS_MAX_TARGET_ID; i++)
- { // find spare slot
- if( cpqfcHBAdata->BadTargetCmnd[i] == NULL )
- {
- cpqfcHBAdata->BadTargetCmnd[i] = Cmnd;
-// printk(" BadTargetCmnd[%d] %p Queued, chnl/target/lun %d/%d/%d\n",
-// i,Cmnd, Cmnd->channel, Cmnd->target, Cmnd->lun);
- break;
- }
- }
-}
-
-
-// This is the "main" entry point for Linux Scsi commands --
-// it all starts here.
-
-int cpqfcTS_queuecommand(Scsi_Cmnd *Cmnd, void (* done)(Scsi_Cmnd *))
-{
- struct Scsi_Host *HostAdapter = Cmnd->device->host;
- CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- TachFCHDR_GCMND fchs; // only use for FC destination id field
- PFC_LOGGEDIN_PORT pLoggedInPort;
- ULONG ulStatus, SESTtype;
- LONG ExchangeID;
-
-
-
-
- ENTER("cpqfcTS_queuecommand");
-
- PCI_TRACEO( (ULONG)Cmnd, 0x98)
-
-
- Cmnd->scsi_done = done;
-#ifdef DEBUG_CMND
- cpqfcTS_print_scsi_cmd( Cmnd);
-#endif
-
- // prevent board contention with kernel thread...
-
- if( cpqfcHBAdata->BoardLock )
- {
-// printk(" @BrdLck Hld@ ");
- QueCmndOnBoardLock( cpqfcHBAdata, Cmnd);
- }
-
- else
- {
-
- // in the current system (2.2.12), this routine is called
- // after spin_lock_irqsave(), so INTs are disabled. However,
- // we might have something pending in the LinkQ, which
- // might cause the WorkerTask to run. In case that
- // happens, make sure we lock it out.
-
-
-
- PCI_TRACE( 0x98)
- CPQ_SPINLOCK_HBA( cpqfcHBAdata)
- PCI_TRACE( 0x98)
-
- // can we find an FC device mapping to this SCSI target?
- pLoggedInPort = fcFindLoggedInPort( fcChip,
- Cmnd, // search Scsi Nexus
- 0, // DON'T search linked list for FC port id
- NULL, // DON'T search linked list for FC WWN
- NULL); // DON'T care about end of list
-
- if( pLoggedInPort == NULL ) // not found!
- {
-// printk(" @Q bad targ cmnd %p@ ", Cmnd);
- QueBadTargetCmnd( cpqfcHBAdata, Cmnd);
- }
- else if (Cmnd->device->lun >= CPQFCTS_MAX_LUN)
- {
- printk(KERN_WARNING "cpqfc: Invalid LUN: %d\n", Cmnd->device->lun);
- QueBadTargetCmnd( cpqfcHBAdata, Cmnd);
- }
-
- else // we know what FC device to send to...
- {
-
- // does this device support FCP target functions?
- // (determined by PRLI field)
-
- if( !(pLoggedInPort->fcp_info & TARGET_FUNCTION) )
- {
- printk(" Doesn't support TARGET functions port_id %Xh\n",
- pLoggedInPort->port_id );
- QueBadTargetCmnd( cpqfcHBAdata, Cmnd);
- }
-
- // In this case (previous login OK), the device is temporarily
- // unavailable waiting for re-login, in which case we expect it
- // to be back in between 25 - 500ms.
- // If the FC port doesn't log back in within several seconds
- // (i.e. implicit "logout"), or we get an explicit logout,
- // we set "device_blocked" in Scsi_Device struct; in this
- // case 30 seconds will elapse before Linux/Scsi sends another
- // command to the device.
- else if( pLoggedInPort->prli != TRUE )
- {
-// printk("Device (Chnl/Target %d/%d) invalid PRLI, port_id %06lXh\n",
-// Cmnd->channel, Cmnd->target, pLoggedInPort->port_id);
- QueLinkDownCmnd( cpqfcHBAdata, Cmnd);
-// Need to use "blocked" flag??
-// Cmnd->device->device_blocked = TRUE; // just let it timeout
- }
- else // device supports TARGET functions, and is logged in...
- {
- // (context of fchs is to "reply" to...)
- fchs.s_id = pLoggedInPort->port_id; // destination FC address
-
- // what is the data direction? For data TO the device,
- // we need IWE (Intiator Write Entry). Otherwise, IRE.
-
- if( Cmnd->cmnd[0] == WRITE_10 ||
- Cmnd->cmnd[0] == WRITE_6 ||
- Cmnd->cmnd[0] == WRITE_BUFFER ||
- Cmnd->cmnd[0] == VENDOR_WRITE_OPCODE || // CPQ specific
- Cmnd->cmnd[0] == MODE_SELECT )
- {
- SESTtype = SCSI_IWE; // data from HBA to Device
- }
- else
- SESTtype = SCSI_IRE; // data from Device to HBA
-
- ulStatus = cpqfcTSBuildExchange(
- cpqfcHBAdata,
- SESTtype, // e.g. Initiator Read Entry (IRE)
- &fchs, // we are originator; only use d_id
- Cmnd, // Linux SCSI command (with scatter/gather list)
- &ExchangeID );// fcController->fcExchanges index, -1 if failed
-
- if( !ulStatus ) // Exchange setup?
-
- {
- if( cpqfcHBAdata->BoardLock )
- {
- TriggerHBA( fcChip->Registers.ReMapMemBase, 0);
- printk(" @bl! %d, xID %Xh@ ", current->pid, ExchangeID);
- }
-
- ulStatus = cpqfcTSStartExchange( cpqfcHBAdata, ExchangeID );
- if( !ulStatus )
- {
- PCI_TRACEO( ExchangeID, 0xB8)
- // submitted to Tach's Outbound Que (ERQ PI incremented)
- // waited for completion for ELS type (Login frames issued
- // synchronously)
- }
- else
- // check reason for Exchange not being started - we might
- // want to Queue and start later, or fail with error
- {
- printk("quecommand: cpqfcTSStartExchange failed: %Xh\n", ulStatus );
- }
- } // end good BuildExchange status
-
- else // SEST table probably full -- why? hardware hang?
- {
- printk("quecommand: cpqfcTSBuildExchange faild: %Xh\n", ulStatus);
- }
- } // end can't do FCP-SCSI target functions
- } // end can't find target (FC device)
-
- CPQ_SPINUNLOCK_HBA( cpqfcHBAdata)
- }
-
- PCI_TRACEO( (ULONG)Cmnd, 0x9C)
- LEAVE("cpqfcTS_queuecommand");
- return 0;
-}
-
-
-// Entry point for upper Scsi layer intiated abort. Typically
-// this is called if the command (for hard disk) fails to complete
-// in 30 seconds. This driver intends to complete all disk commands
-// within Exchange ".timeOut" seconds (now 7) with target status, or
-// in case of ".timeOut" expiration, a DID_SOFT_ERROR which causes
-// immediate retry.
-// If any disk commands get the _abort call, except for the case that
-// the physical device was removed or unavailable due to hardware
-// errors, it should be considered a driver error and reported to
-// the author.
-
-int cpqfcTS_abort(Scsi_Cmnd *Cmnd)
-{
-// printk(" cpqfcTS_abort called?? \n");
- return 0;
-}
-
-int cpqfcTS_eh_abort(Scsi_Cmnd *Cmnd)
-{
-
- struct Scsi_Host *HostAdapter = Cmnd->device->host;
- // get the pointer to our Scsi layer HBA buffer
- CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- int i;
- ENTER("cpqfcTS_eh_abort");
-
- Cmnd->result = DID_ABORT <<16; // assume we'll find it
-
- printk(" @Linux _abort Scsi_Cmnd %p ", Cmnd);
- // See if we can find a Cmnd pointer that matches...
- // The most likely case is we accepted the command
- // from Linux Scsi (e.g. ceated a SEST entry) and it
- // got lost somehow. If we can't find any reference
- // to the passed pointer, we can only presume it
- // got completed as far as our driver is concerned.
- // If we found it, we will try to abort it through
- // common mechanism. If FC ABTS is successful (ACC)
- // or is rejected (RJT) by target, we will call
- // Scsi "done" quickly. Otherwise, the ABTS will timeout
- // and we'll call "done" later.
-
- // Search the SEST exchanges for a matching Cmnd ptr.
- for( i=0; i< TACH_SEST_LEN; i++)
- {
- if( Exchanges->fcExchange[i].Cmnd == Cmnd )
- {
-
- // found it!
- printk(" x_ID %Xh, type %Xh\n", i, Exchanges->fcExchange[i].type);
-
- Exchanges->fcExchange[i].status = INITIATOR_ABORT; // seconds default
- Exchanges->fcExchange[i].timeOut = 10; // seconds default (changed later)
-
- // Since we need to immediately return the aborted Cmnd to Scsi
- // upper layers, we can't make future reference to any of its
- // fields (e.g the Nexus).
-
- cpqfcTSPutLinkQue( cpqfcHBAdata, BLS_ABTS, &i);
-
- break;
- }
- }
-
- if( i >= TACH_SEST_LEN ) // didn't find Cmnd ptr in chip's SEST?
- {
- // now search our non-SEST buffers (i.e. Cmnd waiting to
- // start on the HBA or waiting to complete with error for retry).
-
- // first check BadTargetCmnd
- for( i=0; i< CPQFCTS_MAX_TARGET_ID; i++)
- {
- if( cpqfcHBAdata->BadTargetCmnd[i] == Cmnd )
- {
- cpqfcHBAdata->BadTargetCmnd[i] = NULL;
- printk("in BadTargetCmnd Q\n");
- goto Done; // exit
- }
- }
-
- // if not found above...
-
- for( i=0; i < CPQFCTS_REQ_QUEUE_LEN; i++)
- {
- if( cpqfcHBAdata->LinkDnCmnd[i] == Cmnd )
- {
- cpqfcHBAdata->LinkDnCmnd[i] = NULL;
- printk("in LinkDnCmnd Q\n");
- goto Done;
- }
- }
-
-
- for( i=0; i< CPQFCTS_REQ_QUEUE_LEN; i++)
- { // find spare slot
- if( cpqfcHBAdata->BoardLockCmnd[i] == Cmnd )
- {
- cpqfcHBAdata->BoardLockCmnd[i] = NULL;
- printk("in BoardLockCmnd Q\n");
- goto Done;
- }
- }
-
- Cmnd->result = DID_ERROR <<16; // Hmmm...
- printk("Not found! ");
-// panic("_abort");
- }
-
-Done:
-
-// panic("_abort");
- LEAVE("cpqfcTS_eh_abort");
- return 0; // (see scsi.h)
-}
-
-
-// FCP-SCSI Target Device Reset
-// See dpANS Fibre Channel Protocol for SCSI
-// X3.269-199X revision 12, pg 25
-
-#ifdef SUPPORT_RESET
-
-int cpqfcTS_TargetDeviceReset( Scsi_Device *ScsiDev,
- unsigned int reset_flags)
-{
- int timeout = 10*HZ;
- int retries = 1;
- char scsi_cdb[12];
- int result;
- Scsi_Cmnd * SCpnt;
- Scsi_Device * SDpnt;
-
-// FIXME, cpqfcTS_TargetDeviceReset needs to be fixed
-// similarly to how the passthrough ioctl was fixed
-// around the 2.5.30 kernel. Scsi_Cmnd replaced with
-// Scsi_Request, etc.
-// For now, so people don't fall into a hole...
-
- // printk(" ENTERING cpqfcTS_TargetDeviceReset() - flag=%d \n",reset_flags);
-
- if (ScsiDev->host->eh_active) return FAILED;
-
- memset( scsi_cdb, 0, sizeof( scsi_cdb));
-
- scsi_cdb[0] = RELEASE;
-
- SCpnt = scsi_get_command(ScsiDev, GFP_KERNEL);
- {
- CPQFC_DECLARE_COMPLETION(wait);
-
- SCpnt->SCp.buffers_residual = FCP_TARGET_RESET;
-
- // FIXME: this would panic, SCpnt->request would be NULL.
- SCpnt->request->CPQFC_WAITING = &wait;
- scsi_do_cmd(SCpnt, scsi_cdb, NULL, 0, my_ioctl_done, timeout, retries);
- CPQFC_WAIT_FOR_COMPLETION(&wait);
- SCpnt->request->CPQFC_WAITING = NULL;
- }
-
-
- if(driver_byte(SCpnt->result) != 0)
- switch(SCpnt->sense_buffer[2] & 0xf) {
- case ILLEGAL_REQUEST:
- if(cmd[0] == ALLOW_MEDIUM_REMOVAL) dev->lockable = 0;
- else printk("SCSI device (ioctl) reports ILLEGAL REQUEST.\n");
- break;
- case NOT_READY: // This happens if there is no disc in drive
- if(dev->removable && (cmd[0] != TEST_UNIT_READY)){
- printk(KERN_INFO "Device not ready. Make sure there is a disc in the drive.\n");
- break;
- }
- case UNIT_ATTENTION:
- if (dev->removable){
- dev->changed = 1;
- SCpnt->result = 0; // This is no longer considered an error
- // gag this error, VFS will log it anyway /axboe
- // printk(KERN_INFO "Disc change detected.\n");
- break;
- };
- default: // Fall through for non-removable media
- printk("SCSI error: host %d id %d lun %d return code = %x\n",
- dev->host->host_no,
- dev->id,
- dev->lun,
- SCpnt->result);
- printk("\tSense class %x, sense error %x, extended sense %x\n",
- sense_class(SCpnt->sense_buffer[0]),
- sense_error(SCpnt->sense_buffer[0]),
- SCpnt->sense_buffer[2] & 0xf);
-
- };
- result = SCpnt->result;
-
- SDpnt = SCpnt->device;
- scsi_put_command(SCpnt);
- SCpnt = NULL;
-
- // printk(" LEAVING cpqfcTS_TargetDeviceReset() - return SUCCESS \n");
- return SUCCESS;
-}
-
-#else
-int cpqfcTS_TargetDeviceReset( Scsi_Device *ScsiDev,
- unsigned int reset_flags)
-{
- return -ENOTSUPP;
-}
-
-#endif /* SUPPORT_RESET */
-
-int cpqfcTS_eh_device_reset(Scsi_Cmnd *Cmnd)
-{
- int retval;
- Scsi_Device *SDpnt = Cmnd->device;
- // printk(" ENTERING cpqfcTS_eh_device_reset() \n");
- spin_unlock_irq(Cmnd->device->host->host_lock);
- retval = cpqfcTS_TargetDeviceReset( SDpnt, 0);
- spin_lock_irq(Cmnd->device->host->host_lock);
- return retval;
-}
-
-
-int cpqfcTS_reset(Scsi_Cmnd *Cmnd, unsigned int reset_flags)
-{
-
- ENTER("cpqfcTS_reset");
-
- LEAVE("cpqfcTS_reset");
- return SCSI_RESET_ERROR; /* Bus Reset Not supported */
-}
-
-/* This function determines the bios parameters for a given
- harddisk. These tend to be numbers that are made up by the
- host adapter. Parameters:
- size, device number, list (heads, sectors,cylinders).
- (from hosts.h)
-*/
-
-int cpqfcTS_biosparam(struct scsi_device *sdev, struct block_device *n,
- sector_t capacity, int ip[])
-{
- int size = capacity;
-
- ENTER("cpqfcTS_biosparam");
- ip[0] = 64;
- ip[1] = 32;
- ip[2] = size >> 11;
-
- if( ip[2] > 1024 )
- {
- ip[0] = 255;
- ip[1] = 63;
- ip[2] = size / (ip[0] * ip[1]);
- }
-
- LEAVE("cpqfcTS_biosparam");
- return 0;
-}
-
-
-
-irqreturn_t cpqfcTS_intr_handler( int irq,
- void *dev_id,
- struct pt_regs *regs)
-{
-
- unsigned long flags, InfLoopBrk=0;
- struct Scsi_Host *HostAdapter = dev_id;
- CPQFCHBA *cpqfcHBA = (CPQFCHBA *)HostAdapter->hostdata;
- int MoreMessages = 1; // assume we have something to do
- UCHAR IntPending;
- int handled = 0;
-
- ENTER("intr_handler");
- spin_lock_irqsave( HostAdapter->host_lock, flags);
- // is this our INT?
- IntPending = readb( cpqfcHBA->fcChip.Registers.INTPEND.address);
-
- // broken boards can generate messages forever, so
- // prevent the infinite loop
-#define INFINITE_IMQ_BREAK 10000
- if( IntPending )
- {
- handled = 1;
- // mask our HBA interrupts until we handle it...
- writeb( 0, cpqfcHBA->fcChip.Registers.INTEN.address);
-
- if( IntPending & 0x4) // "INT" - Tach wrote to IMQ
- {
- while( (++InfLoopBrk < INFINITE_IMQ_BREAK) && (MoreMessages ==1) )
- {
- MoreMessages = CpqTsProcessIMQEntry( HostAdapter); // ret 0 when done
- }
- if( InfLoopBrk >= INFINITE_IMQ_BREAK )
- {
- printk("WARNING: Compaq FC adapter generating excessive INTs -REPLACE\n");
- printk("or investigate alternate causes (e.g. physical FC layer)\n");
- }
-
- else // working normally - re-enable INTs and continue
- writeb( 0x1F, cpqfcHBA->fcChip.Registers.INTEN.address);
-
- } // (...ProcessIMQEntry() clears INT by writing IMQ consumer)
- else // indications of errors or problems...
- // these usually indicate critical system hardware problems.
- {
- if( IntPending & 0x10 )
- printk(" cpqfcTS adapter external memory parity error detected\n");
- if( IntPending & 0x8 )
- printk(" cpqfcTS adapter PCI master address crossed 45-bit boundary\n");
- if( IntPending & 0x2 )
- printk(" cpqfcTS adapter DMA error detected\n");
- if( IntPending & 0x1 ) {
- UCHAR IntStat;
- printk(" cpqfcTS adapter PCI error detected\n");
- IntStat = readb( cpqfcHBA->fcChip.Registers.INTSTAT.address);
- printk("cpqfc: ISR = 0x%02x\n", IntStat);
- if (IntStat & 0x1) {
- __u16 pcistat;
- /* read the pci status register */
- pci_read_config_word(cpqfcHBA->PciDev, 0x06, &pcistat);
- printk("PCI status register is 0x%04x\n", pcistat);
- if (pcistat & 0x8000) printk("Parity Error Detected.\n");
- if (pcistat & 0x4000) printk("Signalled System Error\n");
- if (pcistat & 0x2000) printk("Received Master Abort\n");
- if (pcistat & 0x1000) printk("Received Target Abort\n");
- if (pcistat & 0x0800) printk("Signalled Target Abort\n");
- }
- if (IntStat & 0x4) printk("(INT)\n");
- if (IntStat & 0x8)
- printk("CRS: PCI master address crossed 46 bit bouandary\n");
- if (IntStat & 0x10) printk("MRE: external memory parity error.\n");
- }
- }
- }
- spin_unlock_irqrestore( HostAdapter->host_lock, flags);
- LEAVE("intr_handler");
- return IRQ_RETVAL(handled);
-}
-
-
-
-
-int cpqfcTSDecodeGBICtype( PTACHYON fcChip, char cErrorString[])
-{
- // Verify GBIC type (if any) and correct Tachyon Port State Machine
- // (GBIC) module definition is:
- // GPIO1, GPIO0, GPIO4 for MD2, MD1, MD0. The input states appear
- // to be inverted -- i.e., a setting of 111 is read when there is NO
- // GBIC present. The Module Def (MD) spec says 000 is "no GBIC"
- // Hard code the bit states to detect Copper,
- // Long wave (single mode), Short wave (multi-mode), and absent GBIC
-
- ULONG ulBuff;
-
- sprintf( cErrorString, "\nGBIC detected: ");
-
- ulBuff = fcChip->Registers.TYstatus.value & 0x13;
- switch( ulBuff )
- {
- case 0x13: // GPIO4, GPIO1, GPIO0 = 111; no GBIC!
- sprintf( &cErrorString[ strlen( cErrorString)],
- "NONE! ");
- return FALSE;
-
-
- case 0x11: // Copper GBIC detected
- sprintf( &cErrorString[ strlen( cErrorString)],
- "Copper. ");
- break;
-
- case 0x10: // Long-wave (single mode) GBIC detected
- sprintf( &cErrorString[ strlen( cErrorString)],
- "Long-wave. ");
- break;
- case 0x1: // Short-wave (multi mode) GBIC detected
- sprintf( &cErrorString[ strlen( cErrorString)],
- "Short-wave. ");
- break;
- default: // unknown GBIC - presumably it will work (?)
- sprintf( &cErrorString[ strlen( cErrorString)],
- "Unknown. ");
-
- break;
- } // end switch GBIC detection
-
- return TRUE;
-}
-
-
-
-
-
-
-int cpqfcTSGetLPSM( PTACHYON fcChip, char cErrorString[])
-{
- // Tachyon's Frame Manager LPSM in LinkDown state?
- // (For non-loop port, check PSM instead.)
- // return string with state and FALSE is Link Down
-
- int LinkUp;
-
- if( fcChip->Registers.FMstatus.value & 0x80 )
- LinkUp = FALSE;
- else
- LinkUp = TRUE;
-
- sprintf( &cErrorString[ strlen( cErrorString)],
- " LPSM %Xh ",
- (fcChip->Registers.FMstatus.value >>4) & 0xf );
-
-
- switch( fcChip->Registers.FMstatus.value & 0xF0)
- {
- // bits set in LPSM
- case 0x10:
- sprintf( &cErrorString[ strlen( cErrorString)], "ARB");
- break;
- case 0x20:
- sprintf( &cErrorString[ strlen( cErrorString)], "ARBwon");
- break;
- case 0x30:
- sprintf( &cErrorString[ strlen( cErrorString)], "OPEN");
- break;
- case 0x40:
- sprintf( &cErrorString[ strlen( cErrorString)], "OPENed");
- break;
- case 0x50:
- sprintf( &cErrorString[ strlen( cErrorString)], "XmitCLS");
- break;
- case 0x60:
- sprintf( &cErrorString[ strlen( cErrorString)], "RxCLS");
- break;
- case 0x70:
- sprintf( &cErrorString[ strlen( cErrorString)], "Xfer");
- break;
- case 0x80:
- sprintf( &cErrorString[ strlen( cErrorString)], "Init");
- break;
- case 0x90:
- sprintf( &cErrorString[ strlen( cErrorString)], "O-IInitFin");
- break;
- case 0xa0:
- sprintf( &cErrorString[ strlen( cErrorString)], "O-IProtocol");
- break;
- case 0xb0:
- sprintf( &cErrorString[ strlen( cErrorString)], "O-ILipRcvd");
- break;
- case 0xc0:
- sprintf( &cErrorString[ strlen( cErrorString)], "HostControl");
- break;
- case 0xd0:
- sprintf( &cErrorString[ strlen( cErrorString)], "LoopFail");
- break;
- case 0xe0:
- sprintf( &cErrorString[ strlen( cErrorString)], "Offline");
- break;
- case 0xf0:
- sprintf( &cErrorString[ strlen( cErrorString)], "OldPort");
- break;
- case 0:
- default:
- sprintf( &cErrorString[ strlen( cErrorString)], "Monitor");
- break;
-
- }
-
- return LinkUp;
-}
-
-
-
-
-#include "linux/slab.h"
-
-// Dynamic memory allocation alignment routines
-// HP's Tachyon Fibre Channel Controller chips require
-// certain memory queues and register pointers to be aligned
-// on various boundaries, usually the size of the Queue in question.
-// Alignment might be on 2, 4, 8, ... or even 512 byte boundaries.
-// Since most O/Ss don't allow this (usually only Cache aligned -
-// 32-byte boundary), these routines provide generic alignment (after
-// O/S allocation) at any boundary, and store the original allocated
-// pointer for deletion (O/S free function). Typically, we expect
-// these functions to only be called at HBA initialization and
-// removal time (load and unload times)
-// ALGORITHM notes:
-// Memory allocation varies by compiler and platform. In the worst case,
-// we are only assured BYTE alignment, but in the best case, we can
-// request allocation on any desired boundary. Our strategy: pad the
-// allocation request size (i.e. waste memory) so that we are assured
-// of passing desired boundary near beginning of contiguous space, then
-// mask out lower address bits.
-// We define the following algorithm:
-// allocBoundary - compiler/platform specific address alignment
-// in number of bytes (default is single byte; i.e. 1)
-// n_alloc - number of bytes application wants @ aligned address
-// ab - alignment boundary, in bytes (e.g. 4, 32, ...)
-// t_alloc - total allocation needed to ensure desired boundary
-// mask - to clear least significant address bits for boundary
-// Compute:
-// t_alloc = n_alloc + (ab - allocBoundary)
-// allocate t_alloc bytes @ alloc_address
-// mask = NOT (ab - 1)
-// (e.g. if ab=32 _0001 1111 -> _1110 0000
-// aligned_address = alloc_address & mask
-// set n_alloc bytes to 0
-// return aligned_address (NULL if failed)
-//
-// If u32_AlignedAddress is non-zero, then search for BaseAddress (stored
-// from previous allocation). If found, invoke call to FREE the memory.
-// Return NULL if BaseAddress not found
-
-// we need about 8 allocations per HBA. Figuring at most 10 HBAs per server
-// size the dynamic_mem array at 80.
-
-void* fcMemManager( struct pci_dev *pdev, ALIGNED_MEM *dynamic_mem,
- ULONG n_alloc, ULONG ab, ULONG u32_AlignedAddress,
- dma_addr_t *dma_handle)
-{
- USHORT allocBoundary=1; // compiler specific - worst case 1
- // best case - replace malloc() call
- // with function that allocates exactly
- // at desired boundary
-
- unsigned long ulAddress;
- ULONG t_alloc, i;
- void *alloc_address = 0; // def. error code / address not found
- LONG mask; // must be 32-bits wide!
-
- ENTER("fcMemManager");
- if( u32_AlignedAddress ) // are we freeing existing memory?
- {
-// printk(" freeing AlignedAddress %Xh\n", u32_AlignedAddress);
- for( i=0; i<DYNAMIC_ALLOCATIONS; i++) // look for the base address
- {
-// printk("dynamic_mem[%u].AlignedAddress %lX\n", i, dynamic_mem[i].AlignedAddress);
- if( dynamic_mem[i].AlignedAddress == u32_AlignedAddress )
- {
- alloc_address = dynamic_mem[i].BaseAllocated; // 'success' status
- pci_free_consistent(pdev,dynamic_mem[i].size,
- alloc_address,
- dynamic_mem[i].dma_handle);
- dynamic_mem[i].BaseAllocated = 0; // clear for next use
- dynamic_mem[i].AlignedAddress = 0;
- dynamic_mem[i].size = 0;
- break; // quit for loop; done
- }
- }
- }
- else if( n_alloc ) // want new memory?
- {
- dma_addr_t handle;
- t_alloc = n_alloc + (ab - allocBoundary); // pad bytes for alignment
-// printk("pci_alloc_consistent() for Tach alignment: %ld bytes\n", t_alloc);
-
-// (would like to) allow thread block to free pages
- alloc_address = // total bytes (NumberOfBytes)
- pci_alloc_consistent(pdev, t_alloc, &handle);
-
- // now mask off least sig. bits of address
- if( alloc_address ) // (only if non-NULL)
- {
- // find place to store ptr, so we
- // can free it later...
-
- mask = (LONG)(ab - 1); // mask all low-order bits
- mask = ~mask; // invert bits
- for( i=0; i<DYNAMIC_ALLOCATIONS; i++) // look for free slot
- {
- if( dynamic_mem[i].BaseAllocated == 0) // take 1st available
- {
- dynamic_mem[i].BaseAllocated = alloc_address;// address from O/S
- dynamic_mem[i].dma_handle = handle;
- if (dma_handle != NULL)
- {
-// printk("handle = %p, ab=%d, boundary = %d, mask=0x%08x\n",
-// handle, ab, allocBoundary, mask);
- *dma_handle = (dma_addr_t)
- ((((ULONG)handle) + (ab - allocBoundary)) & mask);
- }
- dynamic_mem[i].size = t_alloc;
- break;
- }
- }
- ulAddress = (unsigned long)alloc_address;
-
- ulAddress += (ab - allocBoundary); // add the alignment bytes-
- // then truncate address...
- alloc_address = (void*)(ulAddress & mask);
-
- dynamic_mem[i].AlignedAddress =
- (ULONG)(ulAddress & mask); // 32bit Tach address
- memset( alloc_address, 0, n_alloc ); // clear new memory
- }
- else // O/S dynamic mem alloc failed!
- alloc_address = 0; // (for debugging breakpt)
-
- }
-
- LEAVE("fcMemManager");
- return alloc_address; // good (or NULL) address
-}
-
-
-static Scsi_Host_Template driver_template = {
- .detect = cpqfcTS_detect,
- .release = cpqfcTS_release,
- .info = cpqfcTS_info,
- .proc_info = cpqfcTS_proc_info,
- .ioctl = cpqfcTS_ioctl,
- .queuecommand = cpqfcTS_queuecommand,
- .eh_device_reset_handler = cpqfcTS_eh_device_reset,
- .eh_abort_handler = cpqfcTS_eh_abort,
- .bios_param = cpqfcTS_biosparam,
- .can_queue = CPQFCTS_REQ_QUEUE_LEN,
- .this_id = -1,
- .sg_tablesize = SG_ALL,
- .cmd_per_lun = CPQFCTS_CMD_PER_LUN,
- .use_clustering = ENABLE_CLUSTERING,
-};
-#include "scsi_module.c"
-
+++ /dev/null
-// for user apps, make sure data size types are defined
-// with
-
-
-#define CCPQFCTS_IOC_MAGIC 'Z'
-
-typedef struct
-{
- __u8 bus;
- __u8 dev_fn;
- __u32 board_id;
-} cpqfc_pci_info_struct;
-
-typedef __u32 DriverVer_type;
-/*
-typedef union
-{
- struct // Peripheral Unit Device
- {
- __u8 Bus:6;
- __u8 Mode:2; // b00
- __u8 Dev;
- } PeripDev;
- struct // Volume Set Address
- {
- __u8 DevMSB:6;
- __u8 Mode:2; // b01
- __u8 DevLSB;
- } LogDev;
- struct // Logical Unit Device (SCSI-3, SCC-2 defined)
- {
- __u8 Targ:6;
- __u8 Mode:2; // b10
- __u8 Dev:5;
- __u8 Bus:3;
-
- } LogUnit;
-} SCSI3Addr_struct;
-
-
-typedef struct
-{
- SCSI3Addr_struct FCP_Nexus;
- __u8 cdb[16];
-} PassThru_Command_struct;
-*/
-
-/* this is nearly duplicated in idashare.h */
-typedef struct {
- int lc; /* Controller number */
- int node; /* Node (box) number */
- int ld; /* Logical Drive on this box, if required */
- __u32 nexus; /* SCSI Nexus */
- void *argp; /* Argument pointer */
-} VENDOR_IOCTL_REQ;
-
-
-typedef struct {
- char cdb[16]; /* SCSI CDB for the pass-through */
- ushort bus; /* Target bus on the box */
- ushort pdrive; /* Physical drive on the box */
- int len; /* Length of the data area of the CDB */
- int sense_len; /* Length of the sense data */
- char sense_data[40]; /* Sense data */
- void *bufp; /* Data area for the CDB */
- char rw_flag; /* Read CDB or Write CDB */
-} cpqfc_passthru_t;
-
-/*
-** Defines for the IOCTLS.
-*/
-
-#define VENDOR_READ_OPCODE 0x26
-#define VENDOR_WRITE_OPCODE 0x27
-
-#define CPQFCTS_GETPCIINFO _IOR( CCPQFCTS_IOC_MAGIC, 1, cpqfc_pci_info_struct)
-#define CPQFCTS_GETDRIVVER _IOR( CCPQFCTS_IOC_MAGIC, 9, DriverVer_type)
-
-#define CPQFCTS_SCSI_PASSTHRU _IOWR( CCPQFCTS_IOC_MAGIC,11, VENDOR_IOCTL_REQ)
-
-/* We would rather have equivalent generic, low-level driver agnostic
-ioctls that do what CPQFC_IOCTL_FC_TARGET_ADDRESS and
-CPQFC_IOCTL_FC_TDR 0x5388 do, but currently, we do not have them,
-consequently applications would have to know they are talking to cpqfc. */
-
-/* Used to get Fibre Channel WWN and port_id from device */
-// #define CPQFC_IOCTL_FC_TARGET_ADDRESS 0x5387
-#define CPQFC_IOCTL_FC_TARGET_ADDRESS \
- _IOR( CCPQFCTS_IOC_MAGIC, 13, Scsi_FCTargAddress)
-
-/* Used to invoke Target Defice Reset for Fibre Channel */
-// #define CPQFC_IOCTL_FC_TDR 0x5388
-#define CPQFC_IOCTL_FC_TDR _IO( CCPQFCTS_IOC_MAGIC, 15)
-
+++ /dev/null
-/* Copyright(c) 2000, Compaq Computer Corporation
- * Fibre Channel Host Bus Adapter 64-bit, 66MHz PCI
- * Originally developed and tested on:
- * (front): [chip] Tachyon TS HPFC-5166A/1.2 L2C1090 ...
- * SP# P225CXCBFIEL6T, Rev XC
- * SP# 161290-001, Rev XD
- * (back): Board No. 010008-001 A/W Rev X5, FAB REV X5
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- * Written by Don Zimmerman
-*/
-#ifndef CPQFCTSSTRUCTS_H
-#define CPQFCTSSTRUCTS_H
-
-#include <linux/timer.h> // timer declaration in our host data
-#include <linux/interrupt.h>
-#include <asm/atomic.h>
-#include "cpqfcTSioctl.h"
-
-#define DbgDelay(secs) { int wait_time; printk( " DbgDelay %ds ", secs); \
- for( wait_time=jiffies + (secs*HZ); \
- time_before(jiffies, wait_time) ;) ; }
-
-#define CPQFCTS_DRIVER_VER(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
-// don't forget to also change MODULE_DESCRIPTION in cpqfcTSinit.c
-#define VER_MAJOR 2
-#define VER_MINOR 5
-#define VER_SUBMINOR 4
-
-// Macros for kernel (esp. SMP) tracing using a PCI analyzer
-// (e.g. x86).
-//#define PCI_KERNEL_TRACE
-#ifdef PCI_KERNEL_TRACE
-#define PCI_TRACE(x) inl( fcChip->Registers.IOBaseL +x);
-#define PCI_TRACEO(x,y) outl( x, (fcChip->Registers.IOBaseL +y));
-#else
-
-#define PCI_TRACE(x)
-#define PCI_TRACEO(x,y)
-#endif
-
-
-//#define DEBUG_CMND 1 // debug output for Linux Scsi CDBs
-//#define DUMMYCMND_DBG 1
-
-//#define DEBUG_CPQFCTS 1
-//#undef DEBUG_CPQFCTS
-#ifdef DEBUG_CPQFCTS
-#define ENTER(x) printk("cpqfcts : entering %s()\n", x);
-#define LEAVE(x) printk("cpqfcts : leaving %s()\n", x);
-#define DEBUG(x) x
-#else
-#define ENTER(x)
-#define LEAVE(x)
-#define DEBUG(x)
-#endif /* DEBUG_CPQFCTS */
-
-//#define DEBUG_CPQFCTS_PCI 1
-//#undef DEBUG_CPQFCTS_PCI
-#if DEBUG_CPQFCTS_PCI
-#define DEBUG_PCI(x) x
-#else
-#define DEBUG_PCI(x)
-#endif /* DEBUG_CPQFCTS_PCI */
-
-#define STACHLITE66_TS12 "Compaq FibreChannel HBA Tachyon TS HPFC-5166A/1.2"
-#define STACHLITE66_TS13 "Compaq FibreChannel HBA Tachyon TS HPFC-5166A/1.3"
-#define STACHLITE_UNKNOWN "Compaq FibreChannel HBA Tachyon Chip/Board Ver??"
-#define SAGILENT_XL2_21 "Agilent FC HBA, Tachyon XL2 HPFC-5200B/2.1"
-
-// PDA is Peripheral Device Address, VSA is Volume Set Addressing
-// Linux SCSI parameters
-#define CPQFCTS_MAX_TARGET_ID 64
-
-// Note, changing CPQFCTS_MAX_LUN to less than 32 (e.g, 8) will result in
-// strange behavior if a box with more than, e.g. 8, is on the loop.
-#define CPQFCTS_MAX_LUN 32 // The RA-4x00 supports 32 (Linux SCSI supports 8)
-#define CPQFCTS_MAX_CHANNEL 0 // One FC port on cpqfcTS HBA
-
-#define CPQFCTS_CMD_PER_LUN 15 // power of 2 -1, must be >0
-#define CPQFCTS_REQ_QUEUE_LEN (TACH_SEST_LEN/2) // must be < TACH_SEST_LEN
-
-#define LinuxVersionCode(v, p, s) (((v)<<16)+((p)<<8)+(s))
-#ifndef DECLARE_MUTEX_LOCKED
-#define DECLARE_MUTEX_LOCKED(sem) struct semaphore sem = MUTEX_LOCKED
-#endif
-
-#define DEV_NAME "cpqfcTS"
-
-struct SupportedPCIcards
-{
- __u16 vendor_id;
- __u16 device_id;
-};
-
-// nn:nn denotes bit field
- // TachyonHeader struct def.
- // the fields shared with ODB
- // need to have same value
-
-
-
-
-#ifndef BYTE
-//typedef UCHAR BYTE;
-typedef __u8 BYTE;
-#endif
-#ifndef UCHAR
-typedef __u8 UCHAR;
-#endif
-#ifndef LONG
-typedef __s32 LONG;
-#endif
-#ifndef ULONG
-typedef __u32 ULONG;
-#endif
-#ifndef PVOID
-typedef void * PVOID;
-#endif
-#ifndef USHORT
-typedef __u16 USHORT;
-#endif
-#ifndef BOOLEAN
-typedef __u8 BOOLEAN;
-#endif
-
-
-// macro for FC-PH reject codes
-// payload format for LS_RJT (FC payloads are big endian):
-// byte 0 1 2 3 (MSB)
-// DWORD 0 01 00 00 00
-// DWORD 1 resvd code expl. vendor
-
-#define LS_RJT_REASON( code, expl) (( code<<8) | (expl <<16))
-
-
-#define TachLiteSTATUS 0x12
-
-// Fibre Channel EXCHANGE status codes for Tachyon chips/ driver software
-// 32-bit ERROR word defines
-#define INVALID_ARGS 0x1
-#define LNKDWN_OSLS 0x2
-#define LNKDWN_LASER 0x4
-#define OUTQUE_FULL 0x8
-#define DRIVERQ_FULL 0x10
-#define SEST_FULL 0x20
-#define BAD_ALPA 0x40
-#define OVERFLOW 0x80 // inbound CM
-#define COUNT_ERROR 0x100 // inbound CM
-#define LINKFAIL_RX 0x200 // inbound CM
-#define ABORTSEQ_NOTIFY 0x400 // outbound CM
-#define LINKFAIL_TX 0x800 // outbound CM
-#define HOSTPROG_ERR 0x1000 // outbound CM
-#define FRAME_TO 0x2000 // outbound CM
-#define INV_ENTRY 0x4000 // outbound CM
-#define SESTPROG_ERR 0x8000 // outbound CM
-#define OUTBOUND_TIMEOUT 0x10000L // timeout waiting for Tachyon outbound CM
-#define INITIATOR_ABORT 0x20000L // initiator exchange timeout or O/S ABORT
-#define MEMPOOL_FAIL 0x40000L // O/S memory pool allocation failed
-#define FC2_TIMEOUT 0x80000L // driver timeout for lost frames
-#define TARGET_ABORT 0x100000L // ABTS received from FC port
-#define EXCHANGE_QUEUED 0x200000L // e.g. Link State was LDn on fcStart
-#define PORTID_CHANGED 0x400000L // fc Port address changed
-#define DEVICE_REMOVED 0x800000L // fc Port address changed
-// Several error scenarios result in SEST Exchange frames
-// unexpectedly arriving in the SFQ
-#define SFQ_FRAME 0x1000000L // SFQ frames from open Exchange
-
-// Maximum number of Host Bus Adapters (HBA) / controllers supported
-// only important for mem allocation dimensions - increase as necessary
-
-#define MAX_ADAPTERS 8
-#define MAX_RX_PAYLOAD 1024 // hardware dependent max frame payload
-// Tach header struc defines
-#define SOFi3 0x7
-#define SOFf 0x8
-#define SOFn3 0xB
-#define EOFn 0x5
-#define EOFt 0x6
-
-// FCP R_CTL defines
-#define FCP_CMND 0x6
-#define FCP_XFER_RDY 0x5
-#define FCP_RSP 0x7
-#define FCP_RESPONSE 0x777 // (arbitrary #)
-#define NEED_FCP_RSP 0x77 // (arbitrary #)
-#define FCP_DATA 0x1
-
-#define RESET_TACH 0x100 // Reset Tachyon/TachLite
-#define SCSI_IWE 0x2000 // initiator write entry (for SEST)
-#define SCSI_IRE 0x3000 // initiator read entry (for SEST)
-#define SCSI_TRE 0x400 // target read entry (for SEST)
-#define SCSI_TWE 0x500 // target write entry (for SEST)
-#define TOGGLE_LASER 0x800
-#define LIP 0x900
-#define CLEAR_FCPORTS 99 // (arbitrary #) free mem for Logged in ports
-#define FMINIT 0x707 // (arbitrary) for Frame Manager Init command
-
-// BLS == Basic Link Service
-// ELS == Extended Link Service
-#define BLS_NOP 4
-#define BLS_ABTS 0x10 // FC-PH Basic Link Service Abort Sequence
-#define BLS_ABTS_ACC 0x100 // FC-PH Basic Link Service Abort Sequence Accept
-#define BLS_ABTS_RJT 0x101 // FC-PH Basic Link Service Abort Sequence Reject
-#define ELS_PLOGI 0x03 // FC-PH Port Login (arbitrary assign)
-#define ELS_SCR 0x70 // (arb assign) State Change Registration (Fabric)
-#define FCS_NSR 0x72 // (arb assign) Name Service Request (Fabric)
-#define ELS_FLOGI 0x44 // (arb assign) Fabric Login
-#define ELS_FDISC 0x41 // (arb assign) Fabric Discovery (Login)
-#define ELS_PDISC 0x50 // FC-PH2 Port Discovery
-#define ELS_ABTX 0x06 // FC-PH Abort Exchange
-#define ELS_LOGO 0x05 // FC-PH Port Logout
-#define ELS_PRLI 0x20 // FCP-SCSI Process Login
-#define ELS_PRLO 0x21 // FCP-SCSI Process Logout
-#define ELS_LOGO_ACC 0x07 // {FC-PH} Port Logout Accept
-#define ELS_PLOGI_ACC 0x08 // {FC-PH} Port Login Accept
-#define ELS_ACC 0x18 // {FC-PH} (generic) ACCept
-#define ELS_PRLI_ACC 0x22 // {FCP-SCSI} Process Login Accept
-#define ELS_RJT 0x1000000
-#define SCSI_REPORT_LUNS 0x0A0
-#define FCP_TARGET_RESET 0x200
-
-#define ELS_LILP_FRAME 0x00000711 // 1st payload word of LILP frame
-
-#define SFQ_UNASSISTED_FCP 1 // ICM, DWord3, "Type" unassisted FCP
-#define SFQ_UNKNOWN 0x31 // (arbitrary) ICM, DWord3, "Type" unknown
-
-// these "LINK" bits refer to loop or non-loop
-#define LINKACTIVE 0x2 // fcLinkQ type - LINK UP Tachyon FM 'Lup' bit set
-#define LINKDOWN 0xf2 // fcLinkQ type - LINK DOWN Tachyon FM 'Ldn' bit set
-
-//#define VOLUME_SET_ADDRESSING 1 // "channel" or "bus" 1
-
-typedef struct // 32 bytes hdr ONLY (e.g. FCP_DATA buffer for SEST)
-{
- ULONG reserved; // dword 0 (don't use)
- ULONG sof_eof;
- ULONG d_id; // dword 2 - 31:24 R_CTL, 23:0 D_ID
- ULONG s_id; // dword 3 - 31:24 CS_CTL, 23:0 S_ID
- ULONG f_ctl; // dword 4 - 31:24 Type, 23:0 F_CTL
- ULONG seq_cnt; // dword 5 - 31:24 SEQ_ID, 23:16 DF_CTL, 15:0 SEQ_CNT
- ULONG ox_rx_id; // dword 6 - 31:16 OX_ID, 15:0 RX_ID
- ULONG ro; // dword 7 - relative offset
-} TachFCHDR;
-
- // NOTE!! the following struct MUST be 64 bytes.
-typedef struct // 32 bytes hdr + 32 bytes payload
-{
- ULONG reserved; // dword 0 (don't use - must clear to 0)
- ULONG sof_eof; // dword 1 - 31:24 SOF:EOF, UAM,CLS, LCr, TFV, TimeStamp
- ULONG d_id; // dword 2 - 31:24 R_CTL, 23:0 D_ID
- ULONG s_id; // dword 3 - 31:24 CS_CTL, 23:0 S_ID
- ULONG f_ctl; // dword 4 - 31:24 Type, 23:0 F_CTL
- ULONG seq_cnt; // dword 5 - 31:24 SEQ_ID, 23:16 DF_CTL, 15:0 SEQ_CNT
- ULONG ox_rx_id; // dword 6 - 31:16 OX_ID, 15:0 RX_ID
- ULONG ro; // dword 7 - relative offset
-//---------
- __u32 pl[8]; // dwords 8-15 frame data payload
-} TachFCHDR_CMND;
-
-
-typedef struct // 32 bytes hdr + 120 bytes payload
-{
- ULONG reserved; // dword 0 (don't use - must clear to 0)
- ULONG sof_eof; // dword 1 - 31:24 SOF:EOF, UAM,CLS, LCr, TFV, TimeStamp
- ULONG d_id; // dword 2 - 31:24 R_CTL, 23:0 D_ID
- ULONG s_id; // dword 3 - 31:24 CS_CTL, 23:0 S_ID
- ULONG f_ctl; // dword 4 - 31:24 Type, 23:0 F_CTL
- ULONG seq_cnt; // dword 5 - 31:24 SEQ_ID, 23:16 DF_CTL, 15:0 SEQ_CNT
- ULONG ox_rx_id; // dword 6 - 31:16 OX_ID, 15:0 RX_ID
- ULONG ro; // dword 7 - relative offset
-//---------
- __u32 pl[30]; // largest necessary payload (for LOGIN cmnds)
-} TachFCHDR_GCMND;
-
-typedef struct // 32 bytes hdr + 64 bytes payload
-{
- ULONG reserved; // dword 0 (don't use)
- ULONG sof_eof;
- ULONG d_id; // dword 2 - 31:24 R_CTL, 23:0 D_ID
- ULONG s_id; // dword 3 - 31:24 CS_CTL, 23:0 S_ID
- ULONG f_ctl; // dword 4 - 31:24 Type, 23:0 F_CTL
- ULONG seq_cnt; // dword 5 - 31:24 SEQ_ID, 23:16 DF_CTL, 15:0 SEQ_CNT
- ULONG ox_rx_id; // dword 6 - 31:16 OX_ID, 15:0 RX_ID
- ULONG ro; // dword 7 - relative offset
-//---------
- __u32 pl[18]; // payload for FCP-RSP (response buffer) RA-4x00 is 72bytes
-} TachFCHDR_RSP;
-
-
-
-
-
-
-// Inbound Message Queue structures...
-typedef struct // each entry 8 words (32 bytes)
-{
- ULONG type; // IMQ completion message types
- ULONG word[7]; // remainder of structure
- // interpreted by IMQ type
-} TachyonIMQE;
-
-
-// Queues for TachLite not in original Tachyon
-// ERQ - Exchange Request Queue (for outbound commands)
-// SFQ - Single Frame Queue (for incoming frames)
-
- // Define Tachyon Outbound Command Que
- // (Since many Tachyon registers are Read
- // only, maintain copies for debugging)
- // most Tach ques need power-of-2 sizes,
- // where registers are loaded with po2 -1
-#define TACH_SEST_LEN 512 // TachLite SEST
-
-#define ELS_EXCHANGES 64 // e.g. PLOGI, RSCN, ...
-// define the total number of outstanding (simultaneous) exchanges
-#define TACH_MAX_XID (TACH_SEST_LEN + ELS_EXCHANGES) // ELS exchanges
-
-#define ERQ_LEN 128 // power of 2, max 4096
-
-// Inbound Message Queue structures...
-#define IMQ_LEN 512 // minimum 4 entries [(power of 2) - 1]
-typedef struct // 8 words - 32 bytes
-{
- TachyonIMQE QEntry[IMQ_LEN];
- ULONG producerIndex; // IMQ Producer Index register
- // @32 byte align
- ULONG consumerIndex; // Consumer Index register (in Tachyon)
- ULONG length; // Length register
- ULONG base;
-} TachyonIMQ; // @ 32 * IMQ_LEN align
-
-
-
-typedef struct // inbound completion message
-{
- ULONG Type;
- ULONG Index;
- ULONG TransferLength;
-} TachyonInbCM;
-
-
-
-// arbitrary numeric tags for TL structures
-#define TL_FCHS 1 // TachLite Fibre Channel Header Structure
-#define TL_IWE 2 // initiator write entry (for SEST)
-#define TL_TWE 3 // target write entry (for SEST)
-#define TL_IRE 4 // initiator read entry (for SEST)
-#define TL_TRE 5 // target read entry (for SEST)
-#define TL_IRB 6 // I/O request block
-
- // for INCOMING frames
-#define SFQ_LEN 32 // minimum 32 entries, max 4096
-
-typedef struct // Single Frame Que
-{
- TachFCHDR_CMND QEntry[SFQ_LEN]; // must be 64 bytes!!
- ULONG producerIndex; // IMQ Producer Index register
- // @32 byte align
- ULONG consumerIndex; // Consumer Index register (in Tachyon)
- ULONG length; // Length register
- ULONG base;
-} TachLiteSFQ;
-
-
-typedef struct // I/O Request Block flags
-{
- UCHAR BRD : 1;
- UCHAR : 1; // reserved
- UCHAR SFA : 1;
- UCHAR DNC : 1;
- UCHAR DIN : 1;
- UCHAR DCM : 1;
- UCHAR CTS : 1;
- UCHAR SBV : 1; // IRB entry valid - IRB'B' only
-} IRBflags;
-
-typedef struct // I/O Request Block
-{ // Request 'A'
- ULONG Req_A_SFS_Len; // total frame len (hdr + payload), min 32
- ULONG Req_A_SFS_Addr; // 32-bit pointer to FCHS struct (to be sent)
- ULONG Req_A_SFS_D_ID; // 24-bit FC destination (i.e. 8 bit al_pa)
- ULONG Req_A_Trans_ID; // X_ID (OX_ID or RX_ID) and/or Index in SEST
- // Request 'B'
- ULONG Req_B_SFS_Len; // total frame len (hdr + payload), min 32
- ULONG Req_B_SFS_Addr; // 32-bit pointer to FCHS struct (to be sent)
- ULONG Req_B_SFS_D_ID; // 24-bit FC destination (i.e. 8 bit al_pa)
- ULONG Req_B_Trans_ID; // X_ID (OX_ID or RX_ID) and/or Index in SEST
-} TachLiteIRB;
-
-
-typedef struct // TachLite placeholder for IRBs
-{ // aligned @sizeof(ERQ) for TachLite
- // MAX commands is sum of SEST len and ERQ
- // we know that each SEST entry requires an
- // IRB (ERQ) entry; in addition, we provide
- // ERQ_LEN
- TachLiteIRB QEntry[ERQ_LEN]; // Base register; entries 32 bytes ea.
- ULONG consumerIndex; // Consumer Index register
- ULONG producerIndex; // ERQ Producer Index register
- ULONG length; // Length register
- ULONG base; // copy of base ptr for debug
- // struct is sized for largest expected cmnd (LOGIN)
-} TachLiteERQ;
-
-// for now, just 32 bit DMA, eventually 40something, with code changes
-#define CPQFCTS_DMA_MASK ((unsigned long) (0x00000000FFFFFFFF))
-
-#define TL_MAX_SG_ELEM_LEN 0x7ffff // Max buffer length a single S/G entry
- // may represent (a hardware limitation). The
- // only reason to ever change this is if you
- // want to exercise very-hard-to-reach code in
- // cpqfcTSworker.c:build_SEST_sglist().
-
-#define TL_DANGER_SGPAGES 7 // arbitrary high water mark for # of S/G pages
- // we must exceed to elicit a warning indicative
- // of EXTREMELY large data transfers or
- // EXTREME memory fragmentation.
- // (means we just used up 2048 S/G elements,
- // Never seen this is real life, only in
- // testing with tricked up driver.)
-
-#define TL_EXT_SG_PAGE_COUNT 256 // Number of Extended Scatter/Gather a/l PAIRS
- // Tachyon register (IOBaseU 0x68)
- // power-of-2 value ONLY! 4 min, 256 max
-
- // byte len is #Pairs * 2 ULONG/Pair * 4 bytes/ULONG
-#define TL_EXT_SG_PAGE_BYTELEN (TL_EXT_SG_PAGE_COUNT *2 *4)
-
-
-
-// SEST entry types: IWE, IRE, TWE, TRE
-typedef struct
-{
- ULONG Hdr_Len;
- ULONG Hdr_Addr;
- ULONG RSP_Len;
- ULONG RSP_Addr;
- ULONG Buff_Off;
-#define USES_EXTENDED_SGLIST(this_sest, x_ID) \
- (!((this_sest)->u[ x_ID ].IWE.Buff_Off & 0x80000000))
- ULONG Link;
- ULONG RX_ID;
- ULONG Data_Len;
- ULONG Exp_RO;
- ULONG Exp_Byte_Cnt;
- // --- extended/local Gather Len/Address pairs
- ULONG GLen1;
- ULONG GAddr1;
- ULONG GLen2;
- ULONG GAddr2;
- ULONG GLen3;
- ULONG GAddr3;
-} TachLiteIWE;
-
-
-typedef struct
-{
- ULONG Seq_Accum;
- ULONG reserved; // must clear to 0
- ULONG RSP_Len;
- ULONG RSP_Addr;
- ULONG Buff_Off;
- ULONG Buff_Index; // ULONG 5
- ULONG Exp_RO;
- ULONG Byte_Count;
- ULONG reserved_; // ULONG 8
- ULONG Exp_Byte_Cnt;
- // --- extended/local Scatter Len/Address pairs
- ULONG SLen1;
- ULONG SAddr1;
- ULONG SLen2;
- ULONG SAddr2;
- ULONG SLen3;
- ULONG SAddr3;
-} TachLiteIRE;
-
-
-typedef struct // Target Write Entry
-{
- ULONG Seq_Accum; // dword 0
- ULONG reserved; // dword 1 must clear to 0
- ULONG Remote_Node_ID;
- ULONG reserved1; // dword 3 must clear to 0
- ULONG Buff_Off;
- ULONG Buff_Index; // ULONG 5
- ULONG Exp_RO;
- ULONG Byte_Count;
- ULONG reserved_; // ULONG 8
- ULONG Exp_Byte_Cnt;
- // --- extended/local Scatter Len/Address pairs
- ULONG SLen1;
- ULONG SAddr1;
- ULONG SLen2;
- ULONG SAddr2;
- ULONG SLen3;
- ULONG SAddr3;
-} TachLiteTWE;
-
-typedef struct
-{
- ULONG Hdr_Len;
- ULONG Hdr_Addr;
- ULONG RSP_Len; // DWord 2
- ULONG RSP_Addr;
- ULONG Buff_Off;
- ULONG Buff_Index; // DWord 5
- ULONG reserved;
- ULONG Data_Len;
- ULONG reserved_;
- ULONG reserved__;
- // --- extended/local Gather Len/Address pairs
- ULONG GLen1; // DWord A
- ULONG GAddr1;
- ULONG GLen2;
- ULONG GAddr2;
- ULONG GLen3;
- ULONG GAddr3;
-} TachLiteTRE;
-
-typedef struct ext_sg_page_ptr_t *PSGPAGES;
-typedef struct ext_sg_page_ptr_t
-{
- unsigned char page[TL_EXT_SG_PAGE_BYTELEN * 2]; // 2x for alignment
- dma_addr_t busaddr; // need the bus addresses and
- unsigned int maplen; // lengths for later pci unmapping.
- PSGPAGES next;
-} SGPAGES; // linked list of S/G pairs, by Exchange
-
-typedef struct // SCSI Exchange State Table
-{
- union // Entry can be IWE, IRE, TWE, TRE
- { // 64 bytes per entry
- TachLiteIWE IWE;
- TachLiteIRE IRE;
- TachLiteTWE TWE;
- TachLiteTRE TRE;
- } u[TACH_SEST_LEN];
-
- TachFCHDR DataHDR[TACH_SEST_LEN]; // for SEST FCP_DATA frame hdr (no pl)
- TachFCHDR_RSP RspHDR[TACH_SEST_LEN]; // space for SEST FCP_RSP frame
- PSGPAGES sgPages[TACH_SEST_LEN]; // head of linked list of Pool-allocations
- ULONG length; // Length register
- ULONG base; // copy of base ptr for debug
-} TachSEST;
-
-
-
-typedef struct // each register has it's own address
- // and value (used for write-only regs)
-{
- void* address;
- volatile ULONG value;
-} FCREGISTER;
-
-typedef struct // Host copy - TachLite Registers
-{
- ULONG IOBaseL, IOBaseU; // I/O port lower and upper TL register addresses
- ULONG MemBase; // memory mapped register addresses
- void* ReMapMemBase; // O/S VM reference for MemBase
- ULONG wwn_hi; // WWN is set once at startup
- ULONG wwn_lo;
- ULONG my_al_pa; // al_pa received after LIP()
- ULONG ROMCTR; // flags for on-board RAM/ROM
- ULONG RAMBase; // on-board RAM (i.e. some Tachlites)
- ULONG SROMBase; // on-board EEPROM (some Tachlites)
- ULONG PCIMCTR; // PCI Master Control Reg (has bus width)
-
- FCREGISTER INTEN; // copy of interrupt enable mask
- FCREGISTER INTPEND; // interrupt pending
- FCREGISTER INTSTAT; // interrupt status
- FCREGISTER SFQconsumerIndex;
- FCREGISTER ERQproducerIndex;
- FCREGISTER TYconfig; // TachYon (chip level)
- FCREGISTER TYcontrol;
- FCREGISTER TYstatus;
- FCREGISTER FMconfig; // Frame Manager (FC loop level)
- FCREGISTER FMcontrol;
- FCREGISTER FMstatus;
- FCREGISTER FMLinkStatus1;
- FCREGISTER FMLinkStatus2;
- FCREGISTER FMBB_CreditZero;
- FCREGISTER status;
- FCREGISTER ed_tov; // error detect time-out value
- FCREGISTER rcv_al_pa; // received arb. loop physical address
- FCREGISTER primitive; // e.g. LIP(), OPN(), ...
-} TL_REGISTERS;
-
-
-
-typedef struct
-{
- ULONG ok;
- ULONG invalidArgs;
- ULONG linkDown;
- ULONG linkUp;
- ULONG outQueFull;
- ULONG SESTFull;
- ULONG hpe; // host programming err (from Tach)
- ULONG FC4aborted; // aborts from Application or upper driver layer
- ULONG FC2aborted; // aborts from our driver's timeouts
- ULONG timeouts; // our driver timeout (on individual exchanges)
- ULONG logouts; // explicit - sent LOGO; implicit - device removed
- ULONG retries;
- ULONG linkFailTX;
- ULONG linkFailRX;
- ULONG CntErrors; // byte count expected != count received (typ. SEST)
- ULONG e_stores; // elastic store errs
- ULONG resets; // hard or soft controller resets
- ULONG FMinits; // TACH Frame Manager Init (e.g. LIPs)
- ULONG lnkQueFull; // too many LOGIN, loop commands
- ULONG ScsiQueFull; // too many FCP-SCSI inbound frames
- ULONG LossofSignal; // FM link status 1 regs
- ULONG BadRXChar; // FM link status 1 regs
- ULONG LossofSync; // FM link status 1 regs
- ULONG Rx_EOFa; // FM link status 2 regs (received EOFa)
- ULONG Dis_Frm; // FM link status 2 regs (discarded frames)
- ULONG Bad_CRC; // FM link status 2 regs
- ULONG BB0_Timer; // FM BB_Credit Zero Timer Reg
- ULONG loopBreaks; // infinite loop exits
- ULONG lastBB0timer; // static accum. buffer needed by Tachlite
-} FCSTATS;
-
-
-typedef struct // Config Options
-{ // LS Bit first
- USHORT : 1; // bit0:
- USHORT flogi : 1; // bit1: We sent FLOGI - wait for Fabric logins
- USHORT fabric: 1; // bit2: Tachyon detected Fabric (FM stat LG)
- USHORT LILPin: 1; // bit3: We can use an FC-AL LILP frame
- USHORT target: 1; // bit4: this Port has SCSI target capability
- USHORT initiator: 1; // bit5: this Port has SCSI initiator capability
- USHORT extLoopback: 1; // bit6: loopback at GBIC
- USHORT intLoopback: 1; // bit7: loopback in HP silicon
- USHORT : 1; // bit8:
- USHORT : 1; // bit9:
- USHORT : 1; // bit10:
- USHORT : 1; // bit11:
- USHORT : 1; // bit12:
- USHORT : 1; // bit13:
- USHORT : 1; // bit14:
- USHORT : 1; // bit15:
-} FC_OPTIONS;
-
-
-
-typedef struct dyn_mem_pair
-{
- void *BaseAllocated; // address as allocated from O/S;
- unsigned long AlignedAddress; // aligned address (used by Tachyon DMA)
- dma_addr_t dma_handle;
- size_t size;
-} ALIGNED_MEM;
-
-
-
-
-// these structs contain only CRUCIAL (stuff we actually use) parameters
-// from FC-PH(n) logins. (Don't save entire LOGIN payload to save mem.)
-
-// Implicit logout happens when the loop goes down - we require PDISC
-// to restore. Explicit logout is when WE decide never to talk to someone,
-// or when a target refuses to talk to us, i.e. sends us a LOGO frame or
-// LS_RJT reject in response to our PLOGI request.
-
-#define IMPLICIT_LOGOUT 1
-#define EXPLICIT_LOGOUT 2
-
-typedef struct
-{
- UCHAR channel; // SCSI "bus"
- UCHAR target;
- UCHAR InqDeviceType; // byte 0 from SCSI Inquiry response
- UCHAR VolumeSetAddressing; // FCP-SCSI LUN coding (40h for VSA)
- UCHAR LunMasking; // True if selective presentation supported
- UCHAR lun[CPQFCTS_MAX_LUN];
-} SCSI_NEXUS;
-
-
-typedef struct
-{
- union
- {
- UCHAR ucWWN[8]; // a FC 64-bit World Wide Name/ PortID of target
- // addressing of single target on single loop...
- u64 liWWN;
- } u;
-
- ULONG port_id; // a FC 24-bit address of port (lower 8 bits = al_pa)
-
-#define REPORT_LUNS_PL 256
- UCHAR ReportLunsPayload[REPORT_LUNS_PL];
-
- SCSI_NEXUS ScsiNexus; // LUNs per FC device
-
- ULONG LOGO_counter; // might try several times before logging out for good
- ULONG LOGO_timer; // after LIP, ports expecting PDISC must time-out and
- // LOGOut if successful PDISC not completed in 2 secs
-
- ULONG concurrent_seq; // must be 1 or greater
- ULONG rx_data_size; // e.g. 128, 256, 1024, 2048 per FC-PH spec
- ULONG BB_credit;
- ULONG EE_credit;
-
- ULONG fcp_info; // from PRLI (i.e. INITIATOR/ TARGET flags)
- // flags for login process
- BOOLEAN Originator; // Login sequence Originated (if false, we
- // responded to another port's login sequence)
- BOOLEAN plogi; // PLOGI frame ACCepted (originated or responded)
- BOOLEAN pdisc; // PDISC frame was ORIGINATED (self-login logic)
- BOOLEAN prli; // PRLI frame ACCepted (originated or responded)
- BOOLEAN flogi; // FLOGI frame ACCepted (originated or responded)
- BOOLEAN logo; // port permanently logged out (invalid login param)
- BOOLEAN flogiReq; // Fabric login required (set in LIP process)
- UCHAR highest_ver;
- UCHAR lowest_ver;
-
-
- // when the "target" (actually FC Port) is waiting for login
- // (e.g. after Link reset), set the device_blocked bit;
- // after Port completes login, un-block target.
- UCHAR device_blocked; // see Scsi_Device struct
-
- // define singly-linked list of logged-in ports
- // once a port_id is identified, it is remembered,
- // even if the port is removed indefinitely
- PVOID pNextPort; // actually, type PFC_LOGGEDIN_PORT; void for Compiler
-
-} FC_LOGGEDIN_PORT, *PFC_LOGGEDIN_PORT;
-
-
-
-// This serves as the ESB (Exchange Status Block),
-// and has timeout counter; used for ABORTs
-typedef struct
-{ // FC-1 X_IDs
- ULONG type; // ELS_PLOGI, SCSI_IWE, ... (0 if free)
- PFC_LOGGEDIN_PORT pLoggedInPort; // FC device on other end of Exchange
- Scsi_Cmnd *Cmnd; // Linux SCSI command packet includes S/G list
- ULONG timeOut; // units of ??, DEC by driver, Abort when 0
- ULONG reTries; // need one or more retries?
- ULONG status; // flags indicating errors (0 if none)
- TachLiteIRB IRB; // I/O Request Block, gets copied to ERQ
- TachFCHDR_GCMND fchs; // location of IRB's Req_A_SFS_Addr
-} FC_EXCHANGE, *PFC_EXCHANGE;
-
-// Unfortunately, Linux limits our kmalloc() allocations to 128k.
-// Because of this and the fact that our ScsiRegister allocation
-// is also constrained, we move this large structure out for
-// allocation after Scsi Register.
-// (In other words, this cumbersome indirection is necessary
-// because of kernel memory allocation constraints!)
-
-typedef struct // we will allocate this dynamically
-{
- FC_EXCHANGE fcExchange[ TACH_MAX_XID ];
-} FC_EXCHANGES;
-
-
-
-
-
-
-
-
-
-
-
-typedef struct
-{
- char Name[64]; // name of controller ("HP Tachlite TL Rev2.0, 33MHz, 64bit bus")
- //PVOID pAdapterDevExt; // back pointer to device object/extension
- ULONG ChipType; // local numeric key for Tachyon Type / Rev.
- ULONG status; // our Driver - logical status
-
- TL_REGISTERS Registers; // reg addresses & host memory copies
- // FC-4 mapping of 'transaction' to X_IDs
- UCHAR LILPmap[32*4]; // Loop Position Map of ALPAs (late FC-AL only)
- FC_OPTIONS Options; // e.g. Target, Initiator, loopback...
- UCHAR highest_FCPH_ver; // FC-PH version limits
- UCHAR lowest_FCPH_ver; // FC-PH version limits
-
- FC_EXCHANGES *Exchanges;
- ULONG fcLsExchangeLRU; // Least Recently Used counter (Link Service)
- ULONG fcSestExchangeLRU; // Least Recently Used counter (FCP-SCSI)
- FC_LOGGEDIN_PORT fcPorts; // linked list of every FC port ever seen
- FCSTATS fcStats; // FC comm err counters
-
- // Host memory QUEUE pointers
- TachLiteERQ *ERQ; // Exchange Request Que
- TachyonIMQ *IMQ; // Inbound Message Que
- TachLiteSFQ *SFQ; // Single Frame Queue
- TachSEST *SEST; // SCSI Exchange State Table
-
- dma_addr_t exch_dma_handle;
-
- // these function pointers are for "generic" functions, which are
- // replaced with Host Bus Adapter types at
- // runtime.
- int (*CreateTachyonQues)( void* , int);
- int (*DestroyTachyonQues)( void* , int);
- int (*LaserControl)(void*, int ); // e.g. On/Off
- int (*ResetTachyon)(void*, int );
- void (*FreezeTachyon)(void*, int );
- void (*UnFreezeTachyon)(void*, int );
- int (*InitializeTachyon)(void*, int, int );
- int (*InitializeFrameManager)(void*, int );
- int (*ProcessIMQEntry)(void*);
- int (*ReadWriteWWN)(void*, int ReadWrite);
- int (*ReadWriteNVRAM)(void*, void*, int ReadWrite);
-
-} TACHYON, *PTACHYON;
-
-
-void cpqfcTSClearLinkStatusCounters(TACHYON * fcChip);
-
-int CpqTsCreateTachLiteQues( void* pHBA, int opcode);
-int CpqTsDestroyTachLiteQues( void* , int);
-int CpqTsInitializeTachLite( void *pHBA, int opcode1, int opcode2);
-
-int CpqTsProcessIMQEntry(void* pHBA);
-int CpqTsResetTachLite(void *pHBA, int type);
-void CpqTsFreezeTachlite(void *pHBA, int type);
-void CpqTsUnFreezeTachlite(void *pHBA, int type);
-int CpqTsInitializeFrameManager(void *pHBA, int);
-int CpqTsLaserControl( void* addrBase, int opcode );
-int CpqTsReadWriteWWN(void*, int ReadWrite);
-int CpqTsReadWriteNVRAM(void*, void* data, int ReadWrite);
-
-void cpqfcTS_WorkTask( struct Scsi_Host *HostAdapter);
-void cpqfcTSWorkerThread( void *host);
-
-int cpqfcTS_GetNVRAM_data( UCHAR *wwnbuf, UCHAR *buf );
-ULONG cpqfcTS_ReadNVRAM( void* GPIOin, void* GPIOout , USHORT count,
- UCHAR *buf );
-
-BOOLEAN tl_write_i2c_nvram( void* GPIOin, void* GPIOout,
- USHORT startOffset, // e.g. 0x2f for WWN start
- USHORT count,
- UCHAR *buf );
-
-
-// define misc functions
-int cpqfcTSGetLPSM( PTACHYON fcChip, char cErrorString[]);
-int cpqfcTSDecodeGBICtype( PTACHYON fcChip, char cErrorString[]);
-void* fcMemManager( struct pci_dev *pdev,
- ALIGNED_MEM *dyn_mem_pair, ULONG n_alloc, ULONG ab,
- ULONG ulAlignedAddress, dma_addr_t *dma_handle);
-
-void BigEndianSwap( UCHAR *source, UCHAR *dest, USHORT cnt);
-
-//ULONG virt_to_phys( PVOID virtaddr );
-
-
-// Linux interrupt handler
-irqreturn_t cpqfcTS_intr_handler( int irq,void *dev_id,struct pt_regs *regs);
-void cpqfcTSheartbeat( unsigned long ptr );
-
-
-
-// The biggest Q element we deal with is Aborts - we
-// need 4 bytes for x_ID, and a Scsi_Cmnd (~284 bytes)
-//#define LINKQ_ITEM_SIZE ((4+sizeof(Scsi_Cmnd)+3)/4)
-#define LINKQ_ITEM_SIZE (3*16)
-typedef struct
-{
- ULONG Type; // e.g. LINKUP, SFQENTRY, PDISC, BLS_ABTS, ...
- ULONG ulBuff[ LINKQ_ITEM_SIZE ];
-} LINKQ_ITEM;
-
-#define FC_LINKQ_DEPTH TACH_MAX_XID
-typedef struct
-{
- ULONG producer;
- ULONG consumer; // when producer equals consumer, Q empty
-
- LINKQ_ITEM Qitem[ FC_LINKQ_DEPTH ];
-
-} FC_LINK_QUE, *PFC_LINK_QUE;
-
-
- // DPC routines post to here on Inbound SCSI frames
- // User thread processes
-#define FC_SCSIQ_DEPTH 32
-
-typedef struct
-{
- int Type; // e.g. SCSI
- ULONG ulBuff[ 3*16 ];
-} SCSIQ_ITEM;
-
-typedef struct
-{
- ULONG producer;
- ULONG consumer; // when producer equals consumer, Q empty
-
- SCSIQ_ITEM Qitem[ FC_SCSIQ_DEPTH ];
-
-} FC_SCSI_QUE, *PFC_SCSI_QUE;
-
-typedef struct {
- /* This is tacked on to a Scsi_Request in upper_private_data
- for pasthrough ioctls, as a place to hold data that can't
- be stashed anywhere else in the Scsi_Request. We differentiate
- this from _real_ upper_private_data by checking if the virt addr
- is within our special pool. */
- ushort bus;
- ushort pdrive;
-} cpqfc_passthru_private_t;
-
-#define CPQFC_MAX_PASSTHRU_CMDS 100
-
-#define DYNAMIC_ALLOCATIONS 4 // Tachyon aligned allocations: ERQ,IMQ,SFQ,SEST
-
-// Linux space allocated per HBA (chip state, etc.)
-typedef struct
-{
- struct Scsi_Host *HostAdapter; // back pointer to Linux Scsi struct
-
- TACHYON fcChip; // All Tachyon registers, Queues, functions
- ALIGNED_MEM dynamic_mem[DYNAMIC_ALLOCATIONS];
-
- struct pci_dev *PciDev;
- dma_addr_t fcLQ_dma_handle;
-
- Scsi_Cmnd *LinkDnCmnd[CPQFCTS_REQ_QUEUE_LEN]; // collects Cmnds during LDn
- // (for Acceptable targets)
- Scsi_Cmnd *BoardLockCmnd[CPQFCTS_REQ_QUEUE_LEN]; // SEST was full
-
- Scsi_Cmnd *BadTargetCmnd[CPQFCTS_MAX_TARGET_ID]; // missing targets
-
- u_char HBAnum; // 0-based host number
-
-
- struct timer_list cpqfcTStimer; // FC utility timer for implicit
- // logouts, FC protocol timeouts, etc.
- int fcStatsTime; // Statistics delta reporting time
-
- struct task_struct *worker_thread; // our kernel thread
- int PortDiscDone; // set by SendLogins(), cleared by LDn
-
- struct semaphore *TachFrozen;
- struct semaphore *TYOBcomplete; // handshake for Tach outbound frames
- struct semaphore *fcQueReady; // FibreChannel work for our kernel thread
- struct semaphore *notify_wt; // synchronizes kernel thread kill
- struct semaphore *BoardLock;
-
- PFC_LINK_QUE fcLQ; // the WorkerThread operates on this
-
- spinlock_t hba_spinlock; // held/released by WorkerThread
- cpqfc_passthru_private_t *private_data_pool;
- unsigned long *private_data_bits;
-
-} CPQFCHBA;
-
-#define CPQ_SPINLOCK_HBA( x ) spin_lock(&x->hba_spinlock);
-#define CPQ_SPINUNLOCK_HBA(x) spin_unlock(&x->hba_spinlock);
-
-
-
-void cpqfcTSImplicitLogout( CPQFCHBA* cpqfcHBAdata,
- PFC_LOGGEDIN_PORT pFcPort);
-
-
-void cpqfcTSTerminateExchange( CPQFCHBA*, SCSI_NEXUS *target, int );
-
-PFC_LOGGEDIN_PORT fcPortLoggedIn(
- CPQFCHBA *cpqfcHBAdata,
- TachFCHDR_GCMND* fchs,
- BOOLEAN,
- BOOLEAN);
-void fcProcessLoggedIn(
- CPQFCHBA *cpqfcHBAdata, TachFCHDR_GCMND* fchs);
-
-
-ULONG cpqfcTSBuildExchange(
- CPQFCHBA *cpqfcHBAdata,
- ULONG type, // e.g. PLOGI
- TachFCHDR_GCMND* InFCHS, // incoming FCHS
- void *Data, // the CDB, scatter/gather, etc.
- LONG *ExchangeID ); // allocated exchange ID
-
-ULONG cpqfcTSStartExchange(
- CPQFCHBA *cpqfcHBAdata,
- LONG ExchangeID );
-
-void cpqfcTSCompleteExchange(
- struct pci_dev *pcidev,
- PTACHYON fcChip,
- ULONG exchange_ID);
-
-
-PFC_LOGGEDIN_PORT fcFindLoggedInPort(
- PTACHYON fcChip,
- Scsi_Cmnd *Cmnd, // (We want the channel/target/lun Nexus from Cmnd)
- ULONG port_id, // search linked list for al_pa, or
- UCHAR wwn[8], // search linked list for WWN, or...
- PFC_LOGGEDIN_PORT *pLastLoggedInPort
-);
-
-void cpqfcTSPutLinkQue(
- CPQFCHBA *cpqfcHBAdata,
- int Type,
- void *QueContent);
-
-void fcPutScsiQue(
- CPQFCHBA *cpqfcHBAdata,
- int Type,
- void *QueContent);
-
-void fcLinkQReset(
- CPQFCHBA *);
-void fcScsiQReset(
- CPQFCHBA *);
-void fcSestReset(
- CPQFCHBA *);
-
-void cpqfc_pci_unmap(struct pci_dev *pcidev,
- Scsi_Cmnd *cmd,
- PTACHYON fcChip,
- ULONG x_ID);
-
-extern const UCHAR valid_al_pa[];
-extern const int number_of_al_pa;
-
-#define FCP_RESID_UNDER 0x80000
-#define FCP_RESID_OVER 0x40000
-#define FCP_SNS_LEN_VALID 0x20000
-#define FCP_RSP_LEN_VALID 0x10000
-
-// RSP_CODE definitions (dpANS Fibre Channel Protocol for SCSI, pg 34)
-#define FCP_DATA_LEN_NOT_BURST_LEN 0x1000000
-#define FCP_CMND_FIELD_INVALID 0x2000000
-#define FCP_DATA_RO_NOT_XRDY_RO 0x3000000
-#define FCP_TASKFUNCTION_NS 0x4000000
-#define FCP_TASKFUNCTION_FAIL 0x5000000
-
-// FCP-SCSI response status struct
-typedef struct // see "TachFCHDR_RSP" definition - 64 bytes
-{
- __u32 reserved;
- __u32 reserved1;
- __u32 fcp_status; // field validity and SCSI status
- __u32 fcp_resid;
- __u32 fcp_sns_len; // length of FCP_SNS_INFO field
- __u32 fcp_rsp_len; // length of FCP_RSP_INFO field (expect 8)
- __u32 fcp_rsp_info; // 4 bytes of FCP protocol response information
- __u32 fcp_rsp_info2; // (4 more bytes, since most implementations use 8)
- __u8 fcp_sns_info[36]; // bytes for SCSI sense (ASC, ASCQ)
-
-} FCP_STATUS_RESPONSE, *PFCP_STATUS_RESPONSE;
-
-
-// Fabric State Change Registration
-typedef struct scrpl
-{
- __u32 command;
- __u32 function;
-} SCR_PL;
-
-// Fabric Name Service Request
-typedef struct nsrpl
-{
- __u32 CT_Rev; // (& IN_ID) WORD 0
- __u32 FCS_Type; // WORD 1
- __u32 Command_code; // WORD 2
- __u32 reason_code; // WORD 3
- __u32 FCP; // WORD 4 (lower byte)
-
-} NSR_PL;
-
-
-
-// "FC.H"
-#define MAX_RX_SIZE 0x800 // Max Receive Buffer Size is 2048
-#define MIN_RX_SIZE 0x100 // Min Size is 256, per FC-PLDA Spec
-#define MAX_TARGET_RXIDS SEST_DEPTH
-#define TARGET_RX_SIZE SEST_BUFFER_LENGTH
-
-#define CLASS_1 0x01
-#define CLASS_2 0x02
-#define CLASS_3 0x03
-
-#define FC_PH42 0x08
-#define FC_PH43 0x09
-#define FC_PH3 0x20
-
-#define RR_TOV 2 // Minimum Time for target to wait for
- // PDISC after a LIP.
-#define E_D_TOV 2 // Minimum Time to wait for Sequence
- // Completion.
-#define R_A_TOV 0 // Minimum Time for Target to wait
- // before reclaiming resources.
-//
-// R_CTL Field
-//
-// Routing Bits (31-28)
-//
-#define FC4_DEVICE_DATA 0x00000000
-#define EXT_LINK_DATA 0x20000000
-#define FC4_LINK_DATA 0x30000000
-#define VIDEO_DATA 0x40000000
-#define BASIC_LINK_DATA 0x80000000
-#define LINK_CONTROL 0xC0000000
-#define ROUTING_MASK 0xF0000000
-
-//
-// Information Bits (27-24)
-//
-#define UNCAT_INFORMATION 0x00000000
-#define SOLICITED_DATA 0x01000000
-#define UNSOLICITED_CONTROL 0x02000000
-#define SOLICITED_CONTROL 0x03000000
-#define UNSOLICITED_DATA 0x04000000
-#define DATA_DESCRIPTOR 0x05000000
-#define UNSOLICITED_COMMAND 0x06000000
-#define COMMAND_STATUS 0x07000000
-#define INFO_MASK 0x0F000000
-//
-// (Link Control Codes)
-//
-#define ACK_1 0x00000000
-#define ACK_0_OR_N 0x01000000
-#define P_RJT 0x02000000
-#define F_RJT 0x03000000
-#define P_BSY 0x04000000
-#define FABRIC_BUSY_TO_DF 0x05000000 // Fabric Busy to Data Frame
-#define FABRIC_BUSY_TO_LC 0x06000000 // Fabric Busy to Link Ctl Frame
-#define LINK_CREDIT_RESET 0x07000000
-//
-// (Link Service Command Codes)
-//
-//#define LS_RJT 0x01000000 // LS Reject
-
-#define LS_ACC 0x02000000 // LS Accept
-#define LS_PLOGI 0x03000000 // N_PORT Login
-#define LS_FLOGI 0x04000000 // F_PORT Login
-#define LS_LOGO 0x05000000 // Logout
-#define LS_ABTX 0x06000000 // Abort Exchange
-#define LS_RCS 0x07000000 // Read Connection Status
-#define LS_RES 0x08000000 // Read Exchange Status
-#define LS_RSS 0x09000000 // Read Sequence Status
-#define LS_RSI 0x0A000000 // Request Seq Initiative
-#define LS_ESTS 0x0B000000 // Establish Steaming
-#define LS_ESTC 0x0C000000 // Estimate Credit
-#define LS_ADVC 0x0D000000 // Advice Credit
-#define LS_RTV 0x0E000000 // Read Timeout Value
-#define LS_RLS 0x0F000000 // Read Link Status
-#define LS_ECHO 0x10000000 // Echo
-#define LS_TEST 0x11000000 // Test
-#define LS_RRQ 0x12000000 // Reinstate Rec. Qual.
-#define LS_PRLI 0x20000000 // Process Login
-#define LS_PRLO 0x21000000 // Process Logout
-#define LS_TPRLO 0x24000000 // 3rd Party Process Logout
-#define LS_PDISC 0x50000000 // Process Discovery
-#define LS_FDISC 0x51000000 // Fabric Discovery
-#define LS_ADISC 0x52000000 // Discover Address
-#define LS_RNC 0x53000000 // Report Node Capability
-#define LS_SCR 0x62000000 // State Change Registration
-#define LS_MASK 0xFF000000
-
-//
-// TYPE Bit Masks
-//
-#define BASIC_LINK_SERVICE 0x00000000
-#define EXT_LINK_SERVICE 0x01000000
-
-#define LLC 0x04000000
-#define LLC_SNAP 0x05000000
-#define SCSI_FCP 0x08000000
-#define SCSI_GPP 0x09000000
-#define IPI3_MASTER 0x11000000
-#define IPI3_SLAVE 0x12000000
-#define IPI3_PEER 0x13000000
-#define CP_IPI3_MASTER 0x15000000
-#define CP_IPI3_SLAVE 0x16000000
-#define CP_IPI3_PEER 0x17000000
-#define SBCCS_CHANNEL 0x19000000
-#define SBCCS_CONTROL 0x1A000000
-#define FIBRE_SERVICES 0x20000000
-#define FC_FG 0x21000000
-#define FC_XS 0x22000000
-#define FC_AL 0x23000000
-#define SNMP 0x24000000
-#define HIPPI_FP 0x40000000
-#define TYPE_MASK 0xFF000000
-
-typedef struct {
- UCHAR seq_id_valid;
- UCHAR seq_id;
- USHORT reserved; // 2 bytes reserved
- ULONG ox_rx_id;
- USHORT low_seq_cnt;
- USHORT high_seq_cnt;
-} BA_ACC_PAYLOAD;
-
-typedef struct {
- UCHAR reserved;
- UCHAR reason_code;
- UCHAR reason_explain;
- UCHAR vendor_unique;
-} BA_RJT_PAYLOAD;
-
-
-typedef struct {
- ULONG command_code;
- ULONG sid;
- USHORT ox_id;
- USHORT rx_id;
-} RRQ_MESSAGE;
-
-typedef struct {
- ULONG command_code;
- UCHAR vendor;
- UCHAR explain;
- UCHAR reason;
- UCHAR reserved;
-} REJECT_MESSAGE;
-
-
-#define N_OR_F_PORT 0x1000
-#define RANDOM_RELATIVE_OFFSET 0x4000
-#define CONTINUOSLY_INCREASING 0x8000
-
-#define CLASS_VALID 0x8000
-#define INTERMIX_MODE 0x4000
-#define TRANSPARENT_STACKED 0x2000
-#define LOCKDOWN_STACKED 0x1000
-#define SEQ_DELIVERY 0x800
-
-#define XID_NOT_SUPPORTED 0x00
-#define XID_SUPPORTED 0x4000
-#define XID_REQUIRED 0xC000
-
-#define ASSOCIATOR_NOT_SUPPORTED 0x00
-#define ASSOCIATOR_SUPPORTED 0x1000
-#define ASSOCIATOR_REQUIRED 0x3000
-
-#define INIT_ACK0_SUPPORT 0x800
-#define INIT_ACKN_SUPPORT 0x400
-
-#define RECIP_ACK0_SUPPORT 0x8000
-#define RECIP_ACKN_SUPPORT 0x4000
-
-#define X_ID_INTERLOCK 0x2000
-
-#define ERROR_POLICY 0x1800 // Error Policy Supported
-#define ERROR_DISCARD 0x00 // Only Discard Supported
-#define ERROR_DISC_PROCESS 0x02 // Discard and process supported
-
-#define NODE_ID 0x01
-#define IEEE_EXT 0x20
-
-//
-// Categories Supported Per Sequence
-//
-#define CATEGORIES_PER_SEQUENCE 0x300
-#define ONE_CATEGORY_SEQUENCE 0x00 // 1 Category per Sequence
-#define TWO_CATEGORY_SEQUENCE 0x01 // 2 Categories per Sequence
-#define MANY_CATEGORY_SEQUENCE 0x03 // > 2 Categories/Sequence
-
-typedef struct {
-
- USHORT initiator_control;
- USHORT service_options;
-
- USHORT rx_data_size;
- USHORT recipient_control;
-
- USHORT ee_credit;
- USHORT concurrent_sequences;
-
- USHORT reserved;
- USHORT open_sequences;
-
-} CLASS_PARAMETERS;
-
-typedef struct {
- ULONG login_cmd;
- //
- // Common Service Parameters
- //
- struct {
-
- USHORT bb_credit;
- UCHAR lowest_ver;
- UCHAR highest_ver;
-
- USHORT bb_rx_size;
- USHORT common_features;
-
- USHORT rel_offset;
- USHORT concurrent_seq;
-
-
- ULONG e_d_tov;
- } cmn_services;
-
- //
- // Port Name
- //
- UCHAR port_name[8];
-
- //
- // Node/Fabric Name
- //
- UCHAR node_name[8];
-
- //
- // Class 1, 2 and 3 Service Parameters
- //
- CLASS_PARAMETERS class1;
- CLASS_PARAMETERS class2;
- CLASS_PARAMETERS class3;
-
- ULONG reserved[4];
-
- //
- // Vendor Version Level
- //
- UCHAR vendor_id[2];
- UCHAR vendor_version[6];
- ULONG buffer_size;
- USHORT rxid_start;
- USHORT total_rxids;
-} LOGIN_PAYLOAD;
-
-
-typedef struct
-{
- ULONG cmd; // 4 bytes
- UCHAR n_port_identifier[3];
- UCHAR reserved;
- UCHAR port_name[8];
-} LOGOUT_PAYLOAD;
-
-
-//
-// PRLI Request Service Parameter Defines
-//
-#define PRLI_ACC 0x01
-#define PRLI_REQ 0x02
-#define ORIG_PROCESS_ASSOC_VALID 0x8000
-#define RESP_PROCESS_ASSOC_VALID 0x4000
-#define ESTABLISH_PAIR 0x2000
-#define DATA_OVERLAY_ALLOWED 0x40
-#define INITIATOR_FUNCTION 0x20
-#define TARGET_FUNCTION 0x10
-#define CMD_DATA_MIXED 0x08
-#define DATA_RESP_MIXED 0x04
-#define READ_XFER_RDY 0x02
-#define WRITE_XFER_RDY 0x01
-
-#define RESPONSE_CODE_MASK 0xF00
-#define REQUEST_EXECUTED 0x100
-#define NO_RESOURCES 0x200
-#define INIT_NOT_COMPLETE 0x300
-#define IMAGE_DOES_NOT_EXIST 0x400
-#define BAD_PREDEFINED_COND 0x500
-#define REQ_EXEC_COND 0x600
-#define NO_MULTI_PAGE 0x700
-
-typedef struct {
- USHORT payload_length;
- UCHAR page_length;
- UCHAR cmd;
-
-
- ULONG valid;
-
- ULONG orig_process_associator;
-
- ULONG resp_process_associator;
-
- ULONG fcp_info;
-} PRLI_REQUEST;
-
-typedef struct {
-
- USHORT payload_length;
- UCHAR page_length;
- UCHAR cmd;
-
- ULONG valid;
- ULONG orig_process_associator;
-
- ULONG resp_process_associator;
- ULONG reserved;
-} PRLO_REQUEST;
-
-typedef struct {
- ULONG cmd;
-
- ULONG hard_address;
-
- UCHAR port_name[8];
-
- UCHAR node_name[8];
-
- ULONG s_id;
-} ADISC_PAYLOAD;
-
-struct ext_sg_entry_t {
- __u32 len:18; /* buffer length, bits 0-17 */
- __u32 uba:13; /* upper bus address bits 18-31 */
- __u32 lba; /* lower bus address bits 0-31 */
-};
-
-
-// J. McCarty's LINK.H
-//
-// LS_RJT Reason Codes
-//
-
-#define INVALID_COMMAND_CODE 0x01
-#define LOGICAL_ERROR 0x03
-#define LOGICAL_BUSY 0x05
-#define PROTOCOL_ERROR 0x07
-#define UNABLE_TO_PERFORM 0x09
-#define COMMAND_NOT_SUPPORTED 0x0B
-#define LS_VENDOR_UNIQUE 0xFF
-
-//
-// LS_RJT Reason Codes Explanations
-//
-#define NO_REASON 0x00
-#define OPTIONS_ERROR 0x01
-#define INITIATOR_CTL_ERROR 0x03
-#define RECIPIENT_CTL_ERROR 0x05
-#define DATA_FIELD_SIZE_ERROR 0x07
-#define CONCURRENT_SEQ_ERROR 0x09
-#define CREDIT_ERROR 0x0B
-#define INVALID_PORT_NAME 0x0D
-#define INVALID_NODE_NAME 0x0E
-#define INVALID_CSP 0x0F // Invalid Service Parameters
-#define INVALID_ASSOC_HDR 0x11 // Invalid Association Header
-#define ASSOC_HDR_REQUIRED 0x13 // Association Header Required
-#define LS_INVALID_S_ID 0x15
-#define INVALID_OX_RX_ID 0x17 // Invalid OX_ID RX_ID Combination
-#define CMD_IN_PROCESS 0x19
-#define INVALID_IDENTIFIER 0x1F // Invalid N_PORT Identifier
-#define INVALID_SEQ_ID 0x21
-#define ABT_INVALID_XCHNG 0x23 // Attempt to Abort an invalid Exchange
-#define ABT_INACTIVE_XCHNG 0x25 // Attempt to Abort an inactive Exchange
-#define NEED_REC_QUAL 0x27 // Recovery Qualifier required
-#define NO_LOGIN_RESOURCES 0x29 // No resources to support login
-#define NO_DATA 0x2A // Unable to supply requested data
-#define REQUEST_NOT_SUPPORTED 0x2C // Request Not Supported
-
-//
-// Link Control Codes
-//
-
-//
-// P_BSY Action Codes
-//
-#define SEQUENCE_TERMINATED 0x01000000
-#define SEQUENCE_ACTIVE 0x02000000
-
-//
-// P_BSY Reason Codes
-//
-#define PHYS_NPORT_BUSY 0x010000
-#define NPORT_RESOURCE_BUSY 0x020000
-
-//
-// P_RJT, F_RJT Action Codes
-//
-
-#define RETRYABLE_ERROR 0x01000000
-#define NON_RETRYABLE_ERROR 0x02000000
-
-//
-// P_RJT, F_RJT Reason Codes
-//
-#define INVALID_D_ID 0x010000
-#define INVALID_S_ID 0x020000
-#define NPORT_NOT_AVAIL_TMP 0x030000
-#define NPORT_NOT_AVAIL_PERM 0x040000
-#define CLASS_NOT_SUPPORTED 0x050000
-#define USAGE_ERROR 0x060000
-#define TYPE_NOT_SUPPORTED 0x070000
-#define INVAL_LINK_CONTROL 0x080000
-#define INVAL_R_CTL 0x090000
-#define INVAL_F_CTL 0x0A0000
-#define INVAL_OX_ID 0x0B0000
-#define INVAL_RX_ID 0x0C0000
-#define INVAL_SEQ_ID 0x0D0000
-#define INVAL_DF_CTL 0x0E0000
-#define INVAL_SEQ_CNT 0x0F0000
-#define INVAL_PARAMS 0x100000
-#define EXCHANGE_ERROR 0x110000
-#define LS_PROTOCOL_ERROR 0x120000
-#define INCORRECT_LENGTH 0x130000
-#define UNEXPECTED_ACK 0x140000
-#define LOGIN_REQ 0x160000
-#define EXCESSIVE_SEQ 0x170000
-#define NO_EXCHANGE 0x180000
-#define SEC_HDR_NOT_SUPPORTED 0x190000
-#define NO_FABRIC 0x1A0000
-#define P_VENDOR_UNIQUE 0xFF0000
-
-//
-// BA_RJT Reason Codes
-//
-#define BA_INVALID_COMMAND 0x00010000
-#define BA_LOGICAL_ERROR 0x00030000
-#define BA_LOGICAL_BUSY 0x00050000
-#define BA_PROTOCOL_ERROR 0x00070000
-#define BA_UNABLE_TO_PERFORM 0x00090000
-
-//
-// BA_RJT Reason Explanation Codes
-//
-#define BA_NO_REASON 0x00000000
-#define BA_INVALID_OX_RX 0x00000300
-#define BA_SEQUENCE_ABORTED 0x00000500
-
-
-
-#endif /* CPQFCTSSTRUCTS_H */
-
+++ /dev/null
-// Routine to trigger Finisar GTA analyzer. Runs of GPIO2
-// NOTE: DEBUG ONLY! Could interfere with FCMNGR/Miniport operation
-// since it writes directly to the Tachyon board. This function
-// developed for Compaq HBA Tachyon TS v1.2 (Rev X5 PCB)
-
-#include "cpqfcTStrigger.h"
-#if TRIGGERABLE_HBA
-
-#include <linux/kernel.h>
-#include <linux/ioport.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <asm/io.h>
-
-void TriggerHBA( void* IOBaseUpper, int Print)
-{
- __u32 long value;
-
- // get initial value in hopes of not modifying any other GPIO line
- IOBaseUpper += 0x188; // TachTL/TS Control reg
-
- value = readl( IOBaseUpper);
- // set HIGH to trigger external analyzer (tested on Dolche Finisar 1Gb GTA)
- // The Finisar anaylzer triggers on low-to-high TTL transition
- value |= 0x01; // set bit 0
-
- writel( value, IOBaseUpper);
-
- if( Print)
- printk( " -GPIO0 set- ");
-}
-
-#endif
+++ /dev/null
-// don't do this unless you have the right hardware!
-#define TRIGGERABLE_HBA 0
-#if TRIGGERABLE_HBA
-void TriggerHBA( void*, int);
-#else
-#define TriggerHBA(x, y)
-#endif
-
+++ /dev/null
-/* Copyright(c) 2000, Compaq Computer Corporation
- * Fibre Channel Host Bus Adapter
- * 64-bit, 66MHz PCI
- * Originally developed and tested on:
- * (front): [chip] Tachyon TS HPFC-5166A/1.2 L2C1090 ...
- * SP# P225CXCBFIEL6T, Rev XC
- * SP# 161290-001, Rev XD
- * (back): Board No. 010008-001 A/W Rev X5, FAB REV X5
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- * Written by Don Zimmerman
-*/
-
-#include <linux/sched.h>
-#include <linux/timer.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <linux/kernel.h>
-#include <linux/stat.h>
-#include <linux/blkdev.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/smp_lock.h>
-#include <linux/pci.h>
-
-#define SHUTDOWN_SIGS (sigmask(SIGKILL)|sigmask(SIGINT)|sigmask(SIGTERM))
-
-#include <asm/system.h>
-#include <asm/irq.h>
-#include <asm/dma.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h> // struct Scsi_Host definition for T handler
-#include "cpqfcTSchip.h"
-#include "cpqfcTSstructs.h"
-#include "cpqfcTStrigger.h"
-
-//#define LOGIN_DBG 1
-
-// REMARKS:
-// Since Tachyon chips may be permitted to wait from 500ms up to 2 sec
-// to empty an outgoing frame from its FIFO to the Fibre Channel stream,
-// we cannot do everything we need to in the interrupt handler. Specifically,
-// every time a link re-init (e.g. LIP) takes place, all SCSI I/O has to be
-// suspended until the login sequences have been completed. Login commands
-// are frames just like SCSI commands are frames; they are subject to the same
-// timeout issues and delays. Also, various specs provide up to 2 seconds for
-// devices to log back in (i.e. respond with ACC to a login frame), so I/O to
-// that device has to be suspended.
-// A serious problem here occurs on highly loaded FC-AL systems. If our FC port
-// has a low priority (e.g. high arbitrated loop physical address, alpa), and
-// some other device is hogging bandwidth (permissible under FC-AL), we might
-// time out thinking the link is hung, when it's simply busy. Many such
-// considerations complicate the design. Although Tachyon assumes control
-// (in silicon) for many link-specific issues, the Linux driver is left with the
-// rest, which turns out to be a difficult, time critical chore.
-
-// These "worker" functions will handle things like FC Logins; all
-// processes with I/O to our device must wait for the Login to complete
-// and (if successful) I/O to resume. In the event of a malfunctioning or
-// very busy loop, it may take hundreds of millisecs or even seconds to complete
-// a frame send. We don't want to hang up the entire server (and all
-// processes which don't depend on Fibre) during this wait.
-
-// The Tachyon chip can have around 30,000 I/O operations ("exchanges")
-// open at one time. However, each exchange must be initiated
-// synchronously (i.e. each of the 30k I/O had to be started one at a
-// time by sending a starting frame via Tachyon's outbound que).
-
-// To accommodate kernel "module" build, this driver limits the exchanges
-// to 256, because of the contiguous physical memory limitation of 128M.
-
-// Typical FC Exchanges are opened presuming the FC frames start without errors,
-// while Exchange completion is handled in the interrupt handler. This
-// optimizes performance for the "everything's working" case.
-// However, when we have FC related errors or hot plugging of FC ports, we pause
-// I/O and handle FC-specific tasks in the worker thread. These FC-specific
-// functions will handle things like FC Logins and Aborts. As the Login sequence
-// completes to each and every target, I/O can resume to that target.
-
-// Our kernel "worker thread" must share the HBA with threads calling
-// "queuecommand". We define a "BoardLock" semaphore which indicates
-// to "queuecommand" that the HBA is unavailable, and Cmnds are added to a
-// board lock Q. When the worker thread finishes with the board, the board
-// lock Q commands are completed with status causing immediate retry.
-// Typically, the board is locked while Logins are in progress after an
-// FC Link Down condition. When Cmnds are re-queued after board lock, the
-// particular Scsi channel/target may or may not have logged back in. When
-// the device is waiting for login, the "prli" flag is clear, in which case
-// commands are passed to a Link Down Q. Whenever the login finally completes,
-// the LinkDown Q is completed, again with status causing immediate retry.
-// When FC devices are logged in, we build and start FC commands to the
-// devices.
-
-// NOTE!! As of May 2000, kernel 2.2.14, the error recovery logic for devices
-// that never log back in (e.g. physically removed) is NOT completely
-// understood. I've still seen instances of system hangs on failed Write
-// commands (possibly from the ext2 layer?) on device removal. Such special
-// cases need to be evaluated from a system/application view - e.g., how
-// exactly does the system want me to complete commands when the device is
-// physically removed??
-
-// local functions
-
-static void SetLoginFields(
- PFC_LOGGEDIN_PORT pLoggedInPort,
- TachFCHDR_GCMND* fchs,
- BOOLEAN PDisc,
- BOOLEAN Originator);
-
-static void AnalyzeIncomingFrame(
- CPQFCHBA *cpqfcHBAdata,
- ULONG QNdx );
-
-static void SendLogins( CPQFCHBA *cpqfcHBAdata, __u32 *FabricPortIds );
-
-static int verify_PLOGI( PTACHYON fcChip,
- TachFCHDR_GCMND* fchs, ULONG* reject_explain);
-static int verify_PRLI( TachFCHDR_GCMND* fchs, ULONG* reject_explain);
-
-static void LoadWWN( PTACHYON fcChip, UCHAR* dest, UCHAR type);
-static void BuildLinkServicePayload(
- PTACHYON fcChip, ULONG type, void* payload);
-
-static void UnblockScsiDevice( struct Scsi_Host *HostAdapter,
- PFC_LOGGEDIN_PORT pLoggedInPort);
-
-static void cpqfcTSCheckandSnoopFCP( PTACHYON fcChip, ULONG x_ID);
-
-static void CompleteBoardLockCmnd( CPQFCHBA *cpqfcHBAdata);
-
-static void RevalidateSEST( struct Scsi_Host *HostAdapter,
- PFC_LOGGEDIN_PORT pLoggedInPort);
-
-static void IssueReportLunsCommand(
- CPQFCHBA* cpqfcHBAdata,
- TachFCHDR_GCMND* fchs);
-
-// (see scsi_error.c comments on kernel task creation)
-
-void cpqfcTSWorkerThread( void *host)
-{
- struct Scsi_Host *HostAdapter = (struct Scsi_Host*)host;
- CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
-#ifdef PCI_KERNEL_TRACE
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
-#endif
- DECLARE_MUTEX_LOCKED(fcQueReady);
- DECLARE_MUTEX_LOCKED(fcTYOBcomplete);
- DECLARE_MUTEX_LOCKED(TachFrozen);
- DECLARE_MUTEX_LOCKED(BoardLock);
-
- ENTER("WorkerThread");
-
- lock_kernel();
- daemonize("cpqfcTS_wt_%d", HostAdapter->host_no);
- siginitsetinv(¤t->blocked, SHUTDOWN_SIGS);
-
-
- cpqfcHBAdata->fcQueReady = &fcQueReady; // primary wait point
- cpqfcHBAdata->TYOBcomplete = &fcTYOBcomplete;
- cpqfcHBAdata->TachFrozen = &TachFrozen;
-
-
- cpqfcHBAdata->worker_thread = current;
-
- unlock_kernel();
-
- if( cpqfcHBAdata->notify_wt != NULL )
- up( cpqfcHBAdata->notify_wt); // OK to continue
-
- while(1)
- {
- unsigned long flags;
-
- down_interruptible( &fcQueReady); // wait for something to do
-
- if (signal_pending(current) )
- break;
-
- PCI_TRACE( 0x90)
- // first, take the IO lock so the SCSI upper layers can't call
- // into our _quecommand function (this also disables INTs)
- spin_lock_irqsave( HostAdapter->host_lock, flags); // STOP _que function
- PCI_TRACE( 0x90)
-
- CPQ_SPINLOCK_HBA( cpqfcHBAdata)
- // next, set this pointer to indicate to the _quecommand function
- // that the board is in use, so it should que the command and
- // immediately return (we don't actually require the semaphore function
- // in this driver rev)
-
- cpqfcHBAdata->BoardLock = &BoardLock;
-
- PCI_TRACE( 0x90)
-
- // release the IO lock (and re-enable interrupts)
- spin_unlock_irqrestore( HostAdapter->host_lock, flags);
-
- // disable OUR HBA interrupt (keep them off as much as possible
- // during error recovery)
- disable_irq( cpqfcHBAdata->HostAdapter->irq);
-
- // OK, let's process the Fibre Channel Link Q and do the work
- cpqfcTS_WorkTask( HostAdapter);
-
- // hopefully, no more "work" to do;
- // re-enable our INTs for "normal" completion processing
- enable_irq( cpqfcHBAdata->HostAdapter->irq);
-
-
- cpqfcHBAdata->BoardLock = NULL; // allow commands to be queued
- CPQ_SPINUNLOCK_HBA( cpqfcHBAdata)
-
-
- // Now, complete any Cmnd we Q'd up while BoardLock was held
-
- CompleteBoardLockCmnd( cpqfcHBAdata);
-
-
- }
- // hopefully, the signal was for our module exit...
- if( cpqfcHBAdata->notify_wt != NULL )
- up( cpqfcHBAdata->notify_wt); // yep, we're outta here
-}
-
-
-// Freeze Tachyon routine.
-// If Tachyon is already frozen, return FALSE
-// If Tachyon is not frozen, call freeze function, return TRUE
-//
-static BOOLEAN FreezeTach( CPQFCHBA *cpqfcHBAdata)
-{
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- BOOLEAN FrozeTach = FALSE;
- // It's possible that the chip is already frozen; if so,
- // "Freezing" again will NOT! generate another Freeze
- // Completion Message.
-
- if( (fcChip->Registers.TYstatus.value & 0x70000) != 0x70000)
- { // (need to freeze...)
- fcChip->FreezeTachyon( fcChip, 2); // both ERQ and FCP assists
-
- // 2. Get Tach freeze confirmation
- // (synchronize SEST manipulation with Freeze Completion Message)
- // we need INTs on so semaphore can be set.
- enable_irq( cpqfcHBAdata->HostAdapter->irq); // only way to get Semaphore
- down_interruptible( cpqfcHBAdata->TachFrozen); // wait for INT handler sem.
- // can we TIMEOUT semaphore wait?? TBD
- disable_irq( cpqfcHBAdata->HostAdapter->irq);
-
- FrozeTach = TRUE;
- } // (else, already frozen)
-
- return FrozeTach;
-}
-
-
-
-
-// This is the kernel worker thread task, which processes FC
-// tasks which were queued by the Interrupt handler or by
-// other WorkTask functions.
-
-#define DBG 1
-//#undef DBG
-void cpqfcTS_WorkTask( struct Scsi_Host *HostAdapter)
-{
- CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- ULONG QconsumerNdx;
- LONG ExchangeID;
- ULONG ulStatus=0;
- TachFCHDR_GCMND fchs;
- PFC_LINK_QUE fcLQ = cpqfcHBAdata->fcLQ;
-
- ENTER("WorkTask");
-
- // copy current index to work on
- QconsumerNdx = fcLQ->consumer;
-
- PCI_TRACEO( fcLQ->Qitem[QconsumerNdx].Type, 0x90)
-
-
- // NOTE: when this switch completes, we will "consume" the Que item
-// printk("Que type %Xh\n", fcLQ->Qitem[QconsumerNdx].Type);
- switch( fcLQ->Qitem[QconsumerNdx].Type )
- {
- // incoming frame - link service (ACC, UNSOL REQ, etc.)
- // or FCP-SCSI command
- case SFQ_UNKNOWN:
- AnalyzeIncomingFrame( cpqfcHBAdata, QconsumerNdx );
-
- break;
-
-
-
- case EXCHANGE_QUEUED: // an Exchange (i.e. FCP-SCSI) was previously
- // Queued because the link was down. The
- // heartbeat timer detected it and Queued it here.
- // We attempt to start it again, and if
- // successful we clear the EXCHANGE_Q flag.
- // If the link doesn't come up, the Exchange
- // will eventually time-out.
-
- ExchangeID = (LONG) // x_ID copied from DPC timeout function
- fcLQ->Qitem[QconsumerNdx].ulBuff[0];
-
- // It's possible that a Q'd exchange could have already
- // been started by other logic (e.g. ABTS process)
- // Don't start if already started (Q'd flag clear)
-
- if( Exchanges->fcExchange[ExchangeID].status & EXCHANGE_QUEUED )
- {
-// printk(" *Start Q'd x_ID %Xh: type %Xh ",
-// ExchangeID, Exchanges->fcExchange[ExchangeID].type);
-
- ulStatus = cpqfcTSStartExchange( cpqfcHBAdata, ExchangeID);
- if( !ulStatus )
- {
-// printk("success* ");
- }
- else
- {
-#ifdef DBG
-
- if( ulStatus == EXCHANGE_QUEUED)
- printk("Queued* ");
- else
- printk("failed* ");
-
-#endif
- }
- }
- break;
-
-
- case LINKDOWN:
- // (lots of things already done in INT handler) future here?
- break;
-
-
- case LINKACTIVE: // Tachyon set the Lup bit in FM status
- // NOTE: some misbehaving FC ports (like Tach2.1)
- // can re-LIP immediately after a LIP completes.
-
- // if "initiator", need to verify LOGs with ports
-// printk("\n*LNKUP* ");
-
- if( fcChip->Options.initiator )
- SendLogins( cpqfcHBAdata, NULL ); // PLOGI or PDISC, based on fcPort data
- // if SendLogins successfully completes, PortDiscDone
- // will be set.
-
-
- // If SendLogins was successful, then we expect to get incoming
- // ACCepts or REJECTs, which are handled below.
-
- break;
-
- // LinkService and Fabric request/reply processing
- case ELS_FDISC: // need to send Fabric Discovery (Login)
- case ELS_FLOGI: // need to send Fabric Login
- case ELS_SCR: // need to send State Change Registration
- case FCS_NSR: // need to send Name Service Request
- case ELS_PLOGI: // need to send PLOGI
- case ELS_ACC: // send generic ACCept
- case ELS_PLOGI_ACC: // need to send ELS ACCept frame to recv'd PLOGI
- case ELS_PRLI_ACC: // need to send ELS ACCept frame to recv'd PRLI
- case ELS_LOGO: // need to send ELS LOGO (logout)
- case ELS_LOGO_ACC: // need to send ELS ACCept frame to recv'd PLOGI
- case ELS_RJT: // ReJecT reply
- case ELS_PRLI: // need to send ELS PRLI
-
-
-// printk(" *ELS %Xh* ", fcLQ->Qitem[QconsumerNdx].Type);
- // if PortDiscDone is not set, it means the SendLogins routine
- // failed to complete -- assume that LDn occurred, so login frames
- // are invalid
- if( !cpqfcHBAdata->PortDiscDone) // cleared by LDn
- {
- printk("Discard Q'd ELS login frame\n");
- break;
- }
-
- ulStatus = cpqfcTSBuildExchange(
- cpqfcHBAdata,
- fcLQ->Qitem[QconsumerNdx].Type, // e.g. PLOGI
- (TachFCHDR_GCMND*)
- fcLQ->Qitem[QconsumerNdx].ulBuff, // incoming fchs
- NULL, // no data (no scatter/gather list)
- &ExchangeID );// fcController->fcExchanges index, -1 if failed
-
- if( !ulStatus ) // Exchange setup?
- {
- ulStatus = cpqfcTSStartExchange( cpqfcHBAdata, ExchangeID );
- if( !ulStatus )
- {
- // submitted to Tach's Outbound Que (ERQ PI incremented)
- // waited for completion for ELS type (Login frames issued
- // synchronously)
- }
- else
- // check reason for Exchange not being started - we might
- // want to Queue and start later, or fail with error
- {
-
- }
- }
-
- else // Xchange setup failed...
- printk(" cpqfcTSBuildExchange failed: %Xh\n", ulStatus );
-
- break;
-
- case SCSI_REPORT_LUNS:
- // pass the incoming frame (actually, it's a PRLI frame)
- // so we can send REPORT_LUNS, in order to determine VSA/PDU
- // FCP-SCSI Lun address mode
- IssueReportLunsCommand( cpqfcHBAdata, (TachFCHDR_GCMND*)
- fcLQ->Qitem[QconsumerNdx].ulBuff);
-
- break;
-
-
-
-
- case BLS_ABTS: // need to ABORT one or more exchanges
- {
- LONG x_ID = fcLQ->Qitem[QconsumerNdx].ulBuff[0];
- BOOLEAN FrozeTach = FALSE;
-
- if ( x_ID >= TACH_SEST_LEN ) // (in)sanity check
- {
-// printk( " cpqfcTS ERROR! BOGUS x_ID %Xh", x_ID);
- break;
- }
-
-
- if( Exchanges->fcExchange[ x_ID].Cmnd == NULL ) // should be RARE
- {
-// printk(" ABTS %Xh Scsi Cmnd null! ", x_ID);
-
- break; // nothing to abort!
- }
-
-//#define ABTS_DBG
-#ifdef ABTS_DBG
- printk("INV SEST[%X] ", x_ID);
- if( Exchanges->fcExchange[x_ID].status & FC2_TIMEOUT)
- {
- printk("FC2TO");
- }
- if( Exchanges->fcExchange[x_ID].status & INITIATOR_ABORT)
- {
- printk("IA");
- }
- if( Exchanges->fcExchange[x_ID].status & PORTID_CHANGED)
- {
- printk("PORTID");
- }
- if( Exchanges->fcExchange[x_ID].status & DEVICE_REMOVED)
- {
- printk("DEVRM");
- }
- if( Exchanges->fcExchange[x_ID].status & LINKFAIL_TX)
- {
- printk("LKF");
- }
- if( Exchanges->fcExchange[x_ID].status & FRAME_TO)
- {
- printk("FRMTO");
- }
- if( Exchanges->fcExchange[x_ID].status & ABORTSEQ_NOTIFY)
- {
- printk("ABSQ");
- }
- if( Exchanges->fcExchange[x_ID].status & SFQ_FRAME)
- {
- printk("SFQFR");
- }
-
- if( Exchanges->fcExchange[ x_ID].type == 0x2000)
- printk(" WR");
- else if( Exchanges->fcExchange[ x_ID].type == 0x3000)
- printk(" RD");
- else if( Exchanges->fcExchange[ x_ID].type == 0x10)
- printk(" ABTS");
- else
- printk(" %Xh", Exchanges->fcExchange[ x_ID].type);
-
- if( !(Exchanges->fcExchange[x_ID].status & INITIATOR_ABORT))
- {
- printk(" Cmd %p, ",
- Exchanges->fcExchange[ x_ID].Cmnd);
-
- printk(" brd/chn/trg/lun %d/%d/%d/%d port_id %06X\n",
- cpqfcHBAdata->HBAnum,
- Exchanges->fcExchange[ x_ID].Cmnd->channel,
- Exchanges->fcExchange[ x_ID].Cmnd->target,
- Exchanges->fcExchange[ x_ID].Cmnd->lun,
- Exchanges->fcExchange[ x_ID].fchs.d_id & 0xFFFFFF);
- }
- else // assume that Cmnd ptr is invalid on _abort()
- {
- printk(" Cmd ptr invalid\n");
- }
-
-#endif
-
-
- // Steps to ABORT a SEST exchange:
- // 1. Freeze TL SCSI assists & ERQ (everything)
- // 2. Receive FROZEN inbound CM (must succeed!)
- // 3. Invalidate x_ID SEST entry
- // 4. Resume TL SCSI assists & ERQ (everything)
- // 5. Build/start on exchange - change "type" to BLS_ABTS,
- // timeout to X sec (RA_TOV from PLDA is actually 0)
- // 6. Set Exchange Q'd status if ABTS cannot be started,
- // or simply complete Exchange in "Terminate" condition
-
- PCI_TRACEO( x_ID, 0xB4)
-
- // 1 & 2 . Freeze Tach & get confirmation of freeze
- FrozeTach = FreezeTach( cpqfcHBAdata);
-
- // 3. OK, Tachyon is frozen, so we can invalidate SEST exchange.
- // FC2_TIMEOUT means we are originating the abort, while
- // TARGET_ABORT means we are ACCepting an abort.
- // LINKFAIL_TX, ABORTSEQ_NOFITY, INV_ENTRY or FRAME_TO are
- // all from Tachyon:
- // Exchange was corrupted by LDn or other FC physical failure
- // INITIATOR_ABORT means the upper layer driver/application
- // requested the abort.
-
-
-
- // clear bit 31 (VALid), to invalidate & take control from TL
- fcChip->SEST->u[ x_ID].IWE.Hdr_Len &= 0x7FFFFFFF;
-
-
- // examine and Tach's "Linked List" for IWEs that
- // received (nearly) simultaneous transfer ready (XRDY)
- // repair linked list if necessary (TBD!)
- // (If we ignore the "Linked List", we will time out
- // WRITE commands where we received the FCP-SCSI XFRDY
- // frame (because Tachyon didn't processes it). Linked List
- // management should be done as an optimization.
-
-// readl( fcChip->Registers.ReMapMemBase+TL_MEM_SEST_LINKED_LIST ));
-
-
-
-
- // 4. Resume all Tachlite functions (for other open Exchanges)
- // as quickly as possible to allow other exchanges to other ports
- // to resume. Freezing Tachyon may cause cascading errors, because
- // any received SEST frame cannot be processed by the SEST.
- // Don't "unfreeze" unless Link is operational
- if( FrozeTach ) // did we just freeze it (above)?
- fcChip->UnFreezeTachyon( fcChip, 2); // both ERQ and FCP assists
-
-
- PCI_TRACEO( x_ID, 0xB4)
-
- // Note there is no confirmation that the chip is "unfrozen". Also,
- // if the Link is down when unfreeze is called, it has no effect.
- // Chip will unfreeze when the Link is back up.
-
- // 5. Now send out Abort commands if possible
- // Some Aborts can't be "sent" (Port_id changed or gone);
- // if the device is gone, there is no port_id to send the ABTS to.
-
- if( !(Exchanges->fcExchange[ x_ID].status & PORTID_CHANGED)
- &&
- !(Exchanges->fcExchange[ x_ID].status & DEVICE_REMOVED) )
- {
- Exchanges->fcExchange[ x_ID].type = BLS_ABTS;
- fchs.s_id = Exchanges->fcExchange[ x_ID].fchs.d_id;
- ulStatus = cpqfcTSBuildExchange(
- cpqfcHBAdata,
- BLS_ABTS,
- &fchs, // (uses only s_id)
- NULL, // (no scatter/gather list for ABTS)
- &x_ID );// ABTS on this Exchange ID
-
- if( !ulStatus ) // Exchange setup build OK?
- {
-
- // ABTS may be needed because an Exchange was corrupted
- // by a Link disruption. If the Link is UP, we can
- // presume that this ABTS can start immediately; otherwise,
- // set Que'd status so the Login functions
- // can restart it when the FC physical Link is restored
- if( ((fcChip->Registers.FMstatus.value &0xF0) &0x80)) // loop init?
- {
-// printk(" *set Q status x_ID %Xh on LDn* ", x_ID);
- Exchanges->fcExchange[ x_ID].status |= EXCHANGE_QUEUED;
- }
-
- else // what FC device (port_id) does the Cmd belong to?
- {
- PFC_LOGGEDIN_PORT pLoggedInPort =
- Exchanges->fcExchange[ x_ID].pLoggedInPort;
-
- // if Port is logged in, we might start the abort.
-
- if( (pLoggedInPort != NULL)
- &&
- (pLoggedInPort->prli == TRUE) )
- {
- // it's possible that an Exchange has already been Queued
- // to start after Login completes. Check and don't
- // start it (again) here if Q'd status set
-// printk(" ABTS xchg %Xh ", x_ID);
- if( Exchanges->fcExchange[x_ID].status & EXCHANGE_QUEUED)
- {
-// printk("already Q'd ");
- }
- else
- {
-// printk("starting ");
-
- fcChip->fcStats.FC2aborted++;
- ulStatus = cpqfcTSStartExchange( cpqfcHBAdata, x_ID );
- if( !ulStatus )
- {
- // OK
- // submitted to Tach's Outbound Que (ERQ PI incremented)
- }
- else
- {
-/* printk("ABTS exchange start failed -status %Xh, x_ID %Xh ",
- ulStatus, x_ID);
-*/
- }
- }
- }
- else
- {
-/* printk(" ABTS NOT starting xchg %Xh, %p ",
- x_ID, pLoggedInPort);
- if( pLoggedInPort )
- printk("prli %d ", pLoggedInPort->prli);
-*/
- }
- }
- }
- else // what the #@!
- { // how do we fail to build an Exchange for ABTS??
- printk("ABTS exchange build failed -status %Xh, x_ID %Xh\n",
- ulStatus, x_ID);
- }
- }
- else // abort without ABTS -- just complete exchange/Cmnd to Linux
- {
-// printk(" *Terminating x_ID %Xh on %Xh* ",
-// x_ID, Exchanges->fcExchange[x_ID].status);
- cpqfcTSCompleteExchange( cpqfcHBAdata->PciDev, fcChip, x_ID);
-
- }
- } // end of ABTS case
- break;
-
-
-
- case BLS_ABTS_ACC: // need to ACCept one ABTS
- // (NOTE! this code not updated for Linux yet..)
-
-
- printk(" *ABTS_ACC* ");
- // 1. Freeze TL
-
- fcChip->FreezeTachyon( fcChip, 2); // both ERQ and FCP assists
-
- memcpy( // copy the incoming ABTS frame
- &fchs,
- fcLQ->Qitem[QconsumerNdx].ulBuff, // incoming fchs
- sizeof( fchs));
-
- // 3. OK, Tachyon is frozen so we can invalidate SEST entry
- // (if necessary)
- // Status FC2_TIMEOUT means we are originating the abort, while
- // TARGET_ABORT means we are ACCepting an abort
-
- ExchangeID = fchs.ox_rx_id & 0x7FFF; // RX_ID for exchange
-// printk("ABTS ACC for Target ExchangeID %Xh\n", ExchangeID);
-
-
- // sanity check on received ExchangeID
- if( Exchanges->fcExchange[ ExchangeID].status == TARGET_ABORT )
- {
- // clear bit 31 (VALid), to invalidate & take control from TL
-// printk("Invalidating SEST exchange %Xh\n", ExchangeID);
- fcChip->SEST->u[ ExchangeID].IWE.Hdr_Len &= 0x7FFFFFFF;
- }
-
-
- // 4. Resume all Tachlite functions (for other open Exchanges)
- // as quickly as possible to allow other exchanges to other ports
- // to resume. Freezing Tachyon for too long may royally screw
- // up everything!
- fcChip->UnFreezeTachyon( fcChip, 2); // both ERQ and FCP assists
-
- // Note there is no confirmation that the chip is "unfrozen". Also,
- // if the Link is down when unfreeze is called, it has no effect.
- // Chip will unfreeze when the Link is back up.
-
- // 5. Now send out Abort ACC reply for this exchange
- Exchanges->fcExchange[ ExchangeID].type = BLS_ABTS_ACC;
-
- fchs.s_id = Exchanges->fcExchange[ ExchangeID].fchs.d_id;
- ulStatus = cpqfcTSBuildExchange(
- cpqfcHBAdata,
- BLS_ABTS_ACC,
- &fchs,
- NULL, // no data (no scatter/gather list)
- &ExchangeID );// fcController->fcExchanges index, -1 if failed
-
- if( !ulStatus ) // Exchange setup?
- {
- ulStatus = cpqfcTSStartExchange( cpqfcHBAdata, ExchangeID );
- if( !ulStatus )
- {
- // submitted to Tach's Outbound Que (ERQ PI incremented)
- // waited for completion for ELS type (Login frames issued
- // synchronously)
- }
- else
- // check reason for Exchange not being started - we might
- // want to Queue and start later, or fail with error
- {
-
- }
- }
- break;
-
-
- case BLS_ABTS_RJT: // need to ReJecT one ABTS; reject implies the
- // exchange doesn't exist in the TARGET context.
- // ExchangeID has to come from LinkService space.
-
- printk(" *ABTS_RJT* ");
- ulStatus = cpqfcTSBuildExchange(
- cpqfcHBAdata,
- BLS_ABTS_RJT,
- (TachFCHDR_GCMND*)
- fcLQ->Qitem[QconsumerNdx].ulBuff, // incoming fchs
- NULL, // no data (no scatter/gather list)
- &ExchangeID );// fcController->fcExchanges index, -1 if failed
-
- if( !ulStatus ) // Exchange setup OK?
- {
- ulStatus = cpqfcTSStartExchange( cpqfcHBAdata, ExchangeID );
- // If it fails, we aren't required to retry.
- }
- if( ulStatus )
- {
- printk("Failed to send BLS_RJT for ABTS, X_ID %Xh\n", ExchangeID);
- }
- else
- {
- printk("Sent BLS_RJT for ABTS, X_ID %Xh\n", ExchangeID);
-
- }
-
- break;
-
-
-
- default:
- break;
- } // end switch
-//doNothing:
- // done with this item - now set the NEXT index
-
- if( QconsumerNdx+1 >= FC_LINKQ_DEPTH ) // rollover test
- {
- fcLQ->consumer = 0;
- }
- else
- {
- fcLQ->consumer++;
- }
-
- PCI_TRACEO( fcLQ->Qitem[QconsumerNdx].Type, 0x94)
-
- LEAVE("WorkTask");
- return;
-}
-
-
-
-
-// When Tachyon reports link down, bad al_pa, or Link Service (e.g. Login)
-// commands come in, post to the LinkQ so that action can be taken outside the
-// interrupt handler.
-// This circular Q works like Tachyon's que - the producer points to the next
-// (unused) entry. Called by Interrupt handler, WorkerThread, Timer
-// sputlinkq
-void cpqfcTSPutLinkQue( CPQFCHBA *cpqfcHBAdata,
- int Type,
- void *QueContent)
-{
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
-// FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- PFC_LINK_QUE fcLQ = cpqfcHBAdata->fcLQ;
- ULONG ndx;
-
- ENTER("cpqfcTSPutLinkQ");
-
- ndx = fcLQ->producer;
-
- ndx += 1; // test for Que full
-
-
-
- if( ndx >= FC_LINKQ_DEPTH ) // rollover test
- ndx = 0;
-
- if( ndx == fcLQ->consumer ) // QUE full test
- {
- // QUE was full! lost LK command (fatal to logic)
- fcChip->fcStats.lnkQueFull++;
-
- printk("*LinkQ Full!*");
- TriggerHBA( fcChip->Registers.ReMapMemBase, 1);
-/*
- {
- int i;
- printk("LinkQ PI %d, CI %d\n", fcLQ->producer,
- fcLQ->consumer);
-
- for( i=0; i< FC_LINKQ_DEPTH; )
- {
- printk(" [%d]%Xh ", i, fcLQ->Qitem[i].Type);
- if( (++i %8) == 0) printk("\n");
- }
-
- }
-*/
- printk( "cpqfcTS: WARNING!! PutLinkQue - FULL!\n"); // we're hung
- }
- else // QUE next element
- {
- // Prevent certain multiple (back-to-back) requests.
- // This is important in that we don't want to issue multiple
- // ABTS for the same Exchange, or do multiple FM inits, etc.
- // We can never be sure of the timing of events reported to
- // us by Tach's IMQ, which can depend on system/bus speeds,
- // FC physical link circumstances, etc.
-
- if( (fcLQ->producer != fcLQ->consumer)
- &&
- (Type == FMINIT) )
- {
- LONG lastNdx; // compute previous producer index
- if( fcLQ->producer)
- lastNdx = fcLQ->producer- 1;
- else
- lastNdx = FC_LINKQ_DEPTH-1;
-
-
- if( fcLQ->Qitem[lastNdx].Type == FMINIT)
- {
-// printk(" *skip FMINIT Q post* ");
-// goto DoneWithPutQ;
- }
-
- }
-
- // OK, add the Q'd item...
-
- fcLQ->Qitem[fcLQ->producer].Type = Type;
-
- memcpy(
- fcLQ->Qitem[fcLQ->producer].ulBuff,
- QueContent,
- sizeof(fcLQ->Qitem[fcLQ->producer].ulBuff));
-
- fcLQ->producer = ndx; // increment Que producer
-
- // set semaphore to wake up Kernel (worker) thread
- //
- up( cpqfcHBAdata->fcQueReady );
- }
-
-//DoneWithPutQ:
-
- LEAVE("cpqfcTSPutLinkQ");
-}
-
-
-
-
-// reset device ext FC link Q
-void cpqfcTSLinkQReset( CPQFCHBA *cpqfcHBAdata)
-
-{
- PFC_LINK_QUE fcLQ = cpqfcHBAdata->fcLQ;
- fcLQ->producer = 0;
- fcLQ->consumer = 0;
-
-}
-
-
-
-
-
-// When Tachyon gets an unassisted FCP-SCSI frame, post here so
-// an arbitrary context thread (e.g. IOCTL loopback test function)
-// can process it.
-
-// (NOTE: Not revised for Linux)
-// This Q works like Tachyon's que - the producer points to the next
-// (unused) entry.
-void cpqfcTSPutScsiQue( CPQFCHBA *cpqfcHBAdata,
- int Type,
- void *QueContent)
-{
-// CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
-// PTACHYON fcChip = &cpqfcHBAdata->fcChip;
-
-// ULONG ndx;
-
-// ULONG *pExchangeID;
-// LONG ExchangeID;
-
-/*
- KeAcquireSpinLockAtDpcLevel( &pDevExt->fcScsiQueLock);
- ndx = pDevExt->fcScsiQue.producer + 1; // test for Que full
-
- if( ndx >= FC_SCSIQ_DEPTH ) // rollover test
- ndx = 0;
-
- if( ndx == pDevExt->fcScsiQue.consumer ) // QUE full test
- {
- // QUE was full! lost LK command (fatal to logic)
- fcChip->fcStats.ScsiQueFull++;
-#ifdef DBG
- printk( "fcPutScsiQue - FULL!\n");
-#endif
-
- }
- else // QUE next element
- {
- pDevExt->fcScsiQue.Qitem[pDevExt->fcScsiQue.producer].Type = Type;
-
- if( Type == FCP_RSP )
- {
- // this TL inbound message type means that a TL SEST exchange has
- // copied an FCP response frame into a buffer pointed to by the SEST
- // entry. That buffer is allocated in the SEST structure at ->RspHDR.
- // Copy the RspHDR for use by the Que handler.
- pExchangeID = (ULONG *)QueContent;
-
- memcpy(
- pDevExt->fcScsiQue.Qitem[pDevExt->fcScsiQue.producer].ulBuff,
- &fcChip->SEST->RspHDR[ *pExchangeID ],
- sizeof(pDevExt->fcScsiQue.Qitem[0].ulBuff)); // (any element for size)
-
- }
- else
- {
- memcpy(
- pDevExt->fcScsiQue.Qitem[pDevExt->fcScsiQue.producer].ulBuff,
- QueContent,
- sizeof(pDevExt->fcScsiQue.Qitem[pDevExt->fcScsiQue.producer].ulBuff));
- }
-
- pDevExt->fcScsiQue.producer = ndx; // increment Que
-
-
- KeSetEvent( &pDevExt->TYIBscsi, // signal any waiting thread
- 0, // no priority boost
- FALSE ); // no waiting later for this event
- }
- KeReleaseSpinLockFromDpcLevel( &pDevExt->fcScsiQueLock);
-*/
-}
-
-
-
-
-
-
-
-static void ProcessELS_Request( CPQFCHBA*,TachFCHDR_GCMND*);
-
-static void ProcessELS_Reply( CPQFCHBA*,TachFCHDR_GCMND*);
-
-static void ProcessFCS_Reply( CPQFCHBA*,TachFCHDR_GCMND*);
-
-void cpqfcTSImplicitLogout( CPQFCHBA* cpqfcHBAdata,
- PFC_LOGGEDIN_PORT pFcPort)
-{
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
-
- if( pFcPort->port_id != 0xFFFC01 ) // don't care about Fabric
- {
- fcChip->fcStats.logouts++;
- printk("cpqfcTS: Implicit logout of WWN %08X%08X, port_id %06X\n",
- (ULONG)pFcPort->u.liWWN,
- (ULONG)(pFcPort->u.liWWN >>32),
- pFcPort->port_id);
-
- // Terminate I/O with this (Linux) Scsi target
- cpqfcTSTerminateExchange( cpqfcHBAdata,
- &pFcPort->ScsiNexus,
- DEVICE_REMOVED);
- }
-
- // Do an "implicit logout" - we can't really Logout the device
- // (i.e. with LOGOut Request) because of port_id confusion
- // (i.e. the Other port has no port_id).
- // A new login for that WWN will have to re-write port_id (0 invalid)
- pFcPort->port_id = 0; // invalid!
- pFcPort->pdisc = FALSE;
- pFcPort->prli = FALSE;
- pFcPort->plogi = FALSE;
- pFcPort->flogi = FALSE;
- pFcPort->LOGO_timer = 0;
- pFcPort->device_blocked = TRUE; // block Scsi Requests
- pFcPort->ScsiNexus.VolumeSetAddressing=0;
-}
-
-
-// On FC-AL, there is a chance that a previously known device can
-// be quietly removed (e.g. with non-managed hub),
-// while a NEW device (with different WWN) took the same alpa or
-// even 24-bit port_id. This chance is unlikely but we must always
-// check for it.
-static void TestDuplicatePortId( CPQFCHBA* cpqfcHBAdata,
- PFC_LOGGEDIN_PORT pLoggedInPort)
-{
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- // set "other port" at beginning of fcPorts list
- PFC_LOGGEDIN_PORT pOtherPortWithPortId = fcChip->fcPorts.pNextPort;
- while( pOtherPortWithPortId )
- {
- if( (pOtherPortWithPortId->port_id ==
- pLoggedInPort->port_id)
- &&
- (pOtherPortWithPortId != pLoggedInPort) )
- {
- // trouble! (Implicitly) Log the other guy out
- printk(" *port_id %Xh is duplicated!* ",
- pOtherPortWithPortId->port_id);
- cpqfcTSImplicitLogout( cpqfcHBAdata, pOtherPortWithPortId);
- }
- pOtherPortWithPortId = pOtherPortWithPortId->pNextPort;
- }
-}
-
-
-
-
-
-
-// Dynamic Memory Allocation for newly discovered FC Ports.
-// For simplicity, maintain fcPorts structs for ALL
-// for discovered devices, including those we never do I/O with
-// (e.g. Fabric addresses)
-
-static PFC_LOGGEDIN_PORT CreateFcPort(
- CPQFCHBA* cpqfcHBAdata,
- PFC_LOGGEDIN_PORT pLastLoggedInPort,
- TachFCHDR_GCMND* fchs,
- LOGIN_PAYLOAD* plogi)
-{
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- PFC_LOGGEDIN_PORT pNextLoggedInPort = NULL;
- int i;
-
-
- printk("cpqfcTS: New FC port %06Xh WWN: ", fchs->s_id);
- for( i=3; i>=0; i--) // copy the LOGIN port's WWN
- printk("%02X", plogi->port_name[i]);
- for( i=7; i>3; i--) // copy the LOGIN port's WWN
- printk("%02X", plogi->port_name[i]);
-
-
- // allocate mem for new port
- // (these are small and rare allocations...)
- pNextLoggedInPort = kmalloc( sizeof( FC_LOGGEDIN_PORT), GFP_ATOMIC );
-
-
- // allocation succeeded? Fill out NEW PORT
- if( pNextLoggedInPort )
- {
- // clear out any garbage (sometimes exists)
- memset( pNextLoggedInPort, 0, sizeof( FC_LOGGEDIN_PORT));
-
-
- // If we login to a Fabric, we don't want to treat it
- // as a SCSI device...
- if( (fchs->s_id & 0xFFF000) != 0xFFF000)
- {
- int i;
-
- // create a unique "virtual" SCSI Nexus (for now, just a
- // new target ID) -- we will update channel/target on REPORT_LUNS
- // special case for very first SCSI target...
- if( cpqfcHBAdata->HostAdapter->max_id == 0)
- {
- pNextLoggedInPort->ScsiNexus.target = 0;
- fcChip->fcPorts.ScsiNexus.target = -1; // don't use "stub"
- }
- else
- {
- pNextLoggedInPort->ScsiNexus.target =
- cpqfcHBAdata->HostAdapter->max_id;
- }
-
- // initialize the lun[] Nexus struct for lun masking
- for( i=0; i< CPQFCTS_MAX_LUN; i++)
- pNextLoggedInPort->ScsiNexus.lun[i] = 0xFF; // init to NOT USED
-
- pNextLoggedInPort->ScsiNexus.channel = 0; // cpqfcTS has 1 FC port
-
- printk(" SCSI Chan/Trgt %d/%d",
- pNextLoggedInPort->ScsiNexus.channel,
- pNextLoggedInPort->ScsiNexus.target);
-
- // tell Scsi layers about the new target...
- cpqfcHBAdata->HostAdapter->max_id++;
-// printk("HostAdapter->max_id = %d\n",
-// cpqfcHBAdata->HostAdapter->max_id);
- }
- else
- {
- // device is NOT SCSI (in case of Fabric)
- pNextLoggedInPort->ScsiNexus.target = -1; // invalid
- }
-
- // create forward link to new port
- pLastLoggedInPort->pNextPort = pNextLoggedInPort;
- printk("\n");
-
- }
- return pNextLoggedInPort; // NULL on allocation failure
-} // end NEW PORT (WWN) logic
-
-
-
-// For certain cases, we want to terminate exchanges without
-// sending ABTS to the device. Examples include when an FC
-// device changed it's port_id after Loop re-init, or when
-// the device sent us a logout. In the case of changed port_id,
-// we want to complete the command and return SOFT_ERROR to
-// force a re-try. In the case of LOGOut, we might return
-// BAD_TARGET if the device is really gone.
-// Since we must ensure that Tachyon is not operating on the
-// exchange, we have to freeze the chip
-// sterminateex
-void cpqfcTSTerminateExchange(
- CPQFCHBA* cpqfcHBAdata, SCSI_NEXUS *ScsiNexus, int TerminateStatus)
-{
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- ULONG x_ID;
-
- if( ScsiNexus )
- {
-// printk("TerminateExchange: ScsiNexus chan/target %d/%d\n",
-// ScsiNexus->channel, ScsiNexus->target);
-
- }
-
- for( x_ID = 0; x_ID < TACH_SEST_LEN; x_ID++)
- {
- if( Exchanges->fcExchange[x_ID].type ) // in use?
- {
- if( ScsiNexus == NULL ) // our HBA changed - term. all
- {
- Exchanges->fcExchange[x_ID].status = TerminateStatus;
- cpqfcTSPutLinkQue( cpqfcHBAdata, BLS_ABTS, &x_ID );
- }
- else
- {
- // If a device, according to WWN, has been removed, it's
- // port_id may be used by another working device, so we
- // have to terminate by SCSI target, NOT port_id.
- if( Exchanges->fcExchange[x_ID].Cmnd) // Cmnd in progress?
- {
- if( (Exchanges->fcExchange[x_ID].Cmnd->device->id == ScsiNexus->target)
- &&
- (Exchanges->fcExchange[x_ID].Cmnd->device->channel == ScsiNexus->channel))
- {
- Exchanges->fcExchange[x_ID].status = TerminateStatus;
- cpqfcTSPutLinkQue( cpqfcHBAdata, BLS_ABTS, &x_ID ); // timed-out
- }
- }
-
- // (in case we ever need it...)
- // all SEST structures have a remote node ID at SEST DWORD 2
- // if( (fcChip->SEST->u[ x_ID ].TWE.Remote_Node_ID >> 8)
- // == port_id)
- }
- }
- }
-}
-
-
-static void ProcessELS_Request(
- CPQFCHBA* cpqfcHBAdata, TachFCHDR_GCMND* fchs)
-{
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
-// FC_EXCHANGES *Exchanges = fcChip->Exchanges;
-// ULONG ox_id = (fchs->ox_rx_id >>16);
- PFC_LOGGEDIN_PORT pLoggedInPort=NULL, pLastLoggedInPort;
- BOOLEAN NeedReject = FALSE;
- ULONG ls_reject_code = 0; // default don'n know??
-
-
- // Check the incoming frame for a supported ELS type
- switch( fchs->pl[0] & 0xFFFF)
- {
- case 0x0050: // PDISC?
-
- // Payload for PLOGI and PDISC is identical (request & reply)
- if( !verify_PLOGI( fcChip, fchs, &ls_reject_code) ) // valid payload?
- {
- LOGIN_PAYLOAD logi; // FC-PH Port Login
-
- // PDISC payload OK. If critical login fields
- // (e.g. WWN) matches last login for this port_id,
- // we may resume any prior exchanges
- // with the other port
-
-
- BigEndianSwap( (UCHAR*)&fchs->pl[0], (UCHAR*)&logi, sizeof(logi));
-
- pLoggedInPort = fcFindLoggedInPort(
- fcChip,
- NULL, // don't search Scsi Nexus
- 0, // don't search linked list for port_id
- &logi.port_name[0], // search linked list for WWN
- &pLastLoggedInPort); // must return non-NULL; when a port_id
- // is not found, this pointer marks the
- // end of the singly linked list
-
- if( pLoggedInPort != NULL) // WWN found (prior login OK)
- {
-
- if( (fchs->s_id & 0xFFFFFF) == pLoggedInPort->port_id)
- {
- // Yes. We were expecting PDISC?
- if( pLoggedInPort->pdisc )
- {
- // Yes; set fields accordingly. (PDISC, not Originator)
- SetLoginFields( pLoggedInPort, fchs, TRUE, FALSE);
-
- // send 'ACC' reply
- cpqfcTSPutLinkQue( cpqfcHBAdata,
- ELS_PLOGI_ACC, // (PDISC same as PLOGI ACC)
- fchs );
-
- // OK to resume I/O...
- }
- else
- {
- printk("Not expecting PDISC (pdisc=FALSE)\n");
- NeedReject = TRUE;
- // set reject reason code
- ls_reject_code =
- LS_RJT_REASON( PROTOCOL_ERROR, INITIATOR_CTL_ERROR);
- }
- }
- else
- {
- if( pLoggedInPort->port_id != 0)
- {
- printk("PDISC PortID change: old %Xh, new %Xh\n",
- pLoggedInPort->port_id, fchs->s_id &0xFFFFFF);
- }
- NeedReject = TRUE;
- // set reject reason code
- ls_reject_code =
- LS_RJT_REASON( PROTOCOL_ERROR, INITIATOR_CTL_ERROR);
-
- }
- }
- else
- {
- printk("PDISC Request from unknown WWN\n");
- NeedReject = TRUE;
-
- // set reject reason code
- ls_reject_code =
- LS_RJT_REASON( LOGICAL_ERROR, INVALID_PORT_NAME);
- }
-
- }
- else // Payload unacceptable
- {
- printk("payload unacceptable\n");
- NeedReject = TRUE; // reject code already set
-
- }
-
- if( NeedReject)
- {
- ULONG port_id;
- // The PDISC failed. Set login struct flags accordingly,
- // terminate any I/O to this port, and Q a PLOGI
- if( pLoggedInPort )
- {
- pLoggedInPort->pdisc = FALSE;
- pLoggedInPort->prli = FALSE;
- pLoggedInPort->plogi = FALSE;
-
- cpqfcTSTerminateExchange( cpqfcHBAdata,
- &pLoggedInPort->ScsiNexus, PORTID_CHANGED);
- port_id = pLoggedInPort->port_id;
- }
- else
- {
- port_id = fchs->s_id &0xFFFFFF;
- }
- fchs->reserved = ls_reject_code; // borrow this (unused) field
- cpqfcTSPutLinkQue( cpqfcHBAdata, ELS_RJT, fchs );
- }
-
- break;
-
-
-
- case 0x0003: // PLOGI?
-
- // Payload for PLOGI and PDISC is identical (request & reply)
- if( !verify_PLOGI( fcChip, fchs, &ls_reject_code) ) // valid payload?
- {
- LOGIN_PAYLOAD logi; // FC-PH Port Login
- BOOLEAN NeedReject = FALSE;
-
- // PDISC payload OK. If critical login fields
- // (e.g. WWN) matches last login for this port_id,
- // we may resume any prior exchanges
- // with the other port
-
-
- BigEndianSwap( (UCHAR*)&fchs->pl[0], (UCHAR*)&logi, sizeof(logi));
-
- pLoggedInPort = fcFindLoggedInPort(
- fcChip,
- NULL, // don't search Scsi Nexus
- 0, // don't search linked list for port_id
- &logi.port_name[0], // search linked list for WWN
- &pLastLoggedInPort); // must return non-NULL; when a port_id
- // is not found, this pointer marks the
- // end of the singly linked list
-
- if( pLoggedInPort == NULL) // WWN not found -New Port
- {
- pLoggedInPort = CreateFcPort(
- cpqfcHBAdata,
- pLastLoggedInPort,
- fchs,
- &logi);
- if( pLoggedInPort == NULL )
- {
- printk(" cpqfcTS: New port allocation failed - lost FC device!\n");
- // Now Q a LOGOut Request, since we won't be talking to that device
-
- NeedReject = TRUE;
-
- // set reject reason code
- ls_reject_code =
- LS_RJT_REASON( LOGICAL_ERROR, NO_LOGIN_RESOURCES);
-
- }
- }
- if( !NeedReject )
- {
-
- // OK - we have valid fcPort ptr; set fields accordingly.
- // (not PDISC, not Originator)
- SetLoginFields( pLoggedInPort, fchs, FALSE, FALSE);
-
- // send 'ACC' reply
- cpqfcTSPutLinkQue( cpqfcHBAdata,
- ELS_PLOGI_ACC, // (PDISC same as PLOGI ACC)
- fchs );
- }
- }
- else // Payload unacceptable
- {
- printk("payload unacceptable\n");
- NeedReject = TRUE; // reject code already set
- }
-
- if( NeedReject)
- {
- // The PDISC failed. Set login struct flags accordingly,
- // terminate any I/O to this port, and Q a PLOGI
- pLoggedInPort->pdisc = FALSE;
- pLoggedInPort->prli = FALSE;
- pLoggedInPort->plogi = FALSE;
-
- fchs->reserved = ls_reject_code; // borrow this (unused) field
-
- // send 'RJT' reply
- cpqfcTSPutLinkQue( cpqfcHBAdata, ELS_RJT, fchs );
- }
-
- // terminate any exchanges with this device...
- if( pLoggedInPort )
- {
- cpqfcTSTerminateExchange( cpqfcHBAdata,
- &pLoggedInPort->ScsiNexus, PORTID_CHANGED);
- }
- break;
-
-
-
- case 0x1020: // PRLI?
- {
- BOOLEAN NeedReject = TRUE;
- pLoggedInPort = fcFindLoggedInPort(
- fcChip,
- NULL, // don't search Scsi Nexus
- (fchs->s_id & 0xFFFFFF), // search linked list for port_id
- NULL, // DON'T search linked list for WWN
- NULL); // don't care
-
- if( pLoggedInPort == NULL )
- {
- // huh?
- printk(" Unexpected PRLI Request -not logged in!\n");
-
- // set reject reason code
- ls_reject_code = LS_RJT_REASON( PROTOCOL_ERROR, INITIATOR_CTL_ERROR);
-
- // Q a LOGOut here?
- }
- else
- {
- // verify the PRLI ACC payload
- if( !verify_PRLI( fchs, &ls_reject_code) )
- {
- // PRLI Reply is acceptable; were we expecting it?
- if( pLoggedInPort->plogi )
- {
- // yes, we expected the PRLI ACC (not PDISC; not Originator)
- SetLoginFields( pLoggedInPort, fchs, FALSE, FALSE);
-
- // Q an ACCept Reply
- cpqfcTSPutLinkQue( cpqfcHBAdata,
- ELS_PRLI_ACC,
- fchs );
-
- NeedReject = FALSE;
- }
- else
- {
- // huh?
- printk(" (unexpected) PRLI REQEST with plogi FALSE\n");
-
- // set reject reason code
- ls_reject_code = LS_RJT_REASON( PROTOCOL_ERROR, INITIATOR_CTL_ERROR);
-
- // Q a LOGOut here?
-
- }
- }
- else
- {
- printk(" PRLI REQUEST payload failed verify\n");
- // (reject code set by "verify")
-
- // Q a LOGOut here?
- }
- }
-
- if( NeedReject )
- {
- // Q a ReJecT Reply with reason code
- fchs->reserved = ls_reject_code;
- cpqfcTSPutLinkQue( cpqfcHBAdata,
- ELS_RJT, // Q Type
- fchs );
- }
- }
- break;
-
-
-
-
- case 0x0005: // LOGOut?
- {
- // was this LOGOUT because we sent a ELS_PDISC to an FC device
- // with changed (or new) port_id, or does the port refuse
- // to communicate to us?
- // We maintain a logout counter - if we get 3 consecutive LOGOuts,
- // give up!
- LOGOUT_PAYLOAD logo;
- BOOLEAN GiveUpOnDevice = FALSE;
- ULONG ls_reject_code = 0;
-
- BigEndianSwap( (UCHAR*)&fchs->pl[0], (UCHAR*)&logo, sizeof(logo));
-
- pLoggedInPort = fcFindLoggedInPort(
- fcChip,
- NULL, // don't search Scsi Nexus
- 0, // don't search linked list for port_id
- &logo.port_name[0], // search linked list for WWN
- NULL); // don't care about end of list
-
- if( pLoggedInPort ) // found the device?
- {
- // Q an ACC reply
- cpqfcTSPutLinkQue( cpqfcHBAdata,
- ELS_LOGO_ACC, // Q Type
- fchs ); // device to respond to
-
- // set login struct fields (LOGO_counter increment)
- SetLoginFields( pLoggedInPort, fchs, FALSE, FALSE);
-
- // are we an Initiator?
- if( fcChip->Options.initiator)
- {
- // we're an Initiator, so check if we should
- // try (another?) login
-
- // Fabrics routinely log out from us after
- // getting device info - don't try to log them
- // back in.
- if( (fchs->s_id & 0xFFF000) == 0xFFF000 )
- {
- ; // do nothing
- }
- else if( pLoggedInPort->LOGO_counter <= 3)
- {
- // try (another) login (PLOGI request)
-
- cpqfcTSPutLinkQue( cpqfcHBAdata,
- ELS_PLOGI, // Q Type
- fchs );
-
- // Terminate I/O with "retry" potential
- cpqfcTSTerminateExchange( cpqfcHBAdata,
- &pLoggedInPort->ScsiNexus,
- PORTID_CHANGED);
- }
- else
- {
- printk(" Got 3 LOGOuts - terminating comm. with port_id %Xh\n",
- fchs->s_id &&0xFFFFFF);
- GiveUpOnDevice = TRUE;
- }
- }
- else
- {
- GiveUpOnDevice = TRUE;
- }
-
-
- if( GiveUpOnDevice == TRUE )
- {
- cpqfcTSTerminateExchange( cpqfcHBAdata,
- &pLoggedInPort->ScsiNexus,
- DEVICE_REMOVED);
- }
- }
- else // we don't know this WWN!
- {
- // Q a ReJecT Reply with reason code
- fchs->reserved = ls_reject_code;
- cpqfcTSPutLinkQue( cpqfcHBAdata,
- ELS_RJT, // Q Type
- fchs );
- }
- }
- break;
-
-
-
-
- // FABRIC only case
- case 0x0461: // ELS RSCN (Registered State Change Notification)?
- {
- int Ports;
- int i;
- __u32 Buff;
- // Typically, one or more devices have been added to or dropped
- // from the Fabric.
- // The format of this frame is defined in FC-FLA (Rev 2.7, Aug 1997)
- // The first 32-bit word has a 2-byte Payload Length, which
- // includes the 4 bytes of the first word. Consequently,
- // this PL len must never be less than 4, must be a multiple of 4,
- // and has a specified max value 256.
- // (Endianess!)
- Ports = ((fchs->pl[0] >>24) - 4) / 4;
- Ports = Ports > 63 ? 63 : Ports;
-
- printk(" RSCN ports: %d\n", Ports);
- if( Ports <= 0 ) // huh?
- {
- // ReJecT the command
- fchs->reserved = LS_RJT_REASON( UNABLE_TO_PERFORM, 0);
-
- cpqfcTSPutLinkQue( cpqfcHBAdata,
- ELS_RJT, // Q Type
- fchs );
-
- break;
- }
- else // Accept the command
- {
- cpqfcTSPutLinkQue( cpqfcHBAdata,
- ELS_ACC, // Q Type
- fchs );
- }
-
- // Check the "address format" to determine action.
- // We have 3 cases:
- // 0 = Port Address; 24-bit address of affected device
- // 1 = Area Address; MS 16 bits valid
- // 2 = Domain Address; MS 8 bits valid
- for( i=0; i<Ports; i++)
- {
- BigEndianSwap( (UCHAR*)&fchs->pl[i+1],(UCHAR*)&Buff, 4);
- switch( Buff & 0xFF000000)
- {
-
- case 0: // Port Address?
-
- case 0x01000000: // Area Domain?
- case 0x02000000: // Domain Address
- // For example, "port_id" 0x201300
- // OK, let's try a Name Service Request (Query)
- fchs->s_id = 0xFFFFFC; // Name Server Address
- cpqfcTSPutLinkQue( cpqfcHBAdata, FCS_NSR, fchs);
-
- break;
-
-
- default: // huh? new value on version change?
- break;
- }
- }
- }
- break;
-
-
-
-
- default: // don't support this request (yet)
- // set reject reason code
- fchs->reserved = LS_RJT_REASON( UNABLE_TO_PERFORM,
- REQUEST_NOT_SUPPORTED);
-
- cpqfcTSPutLinkQue( cpqfcHBAdata,
- ELS_RJT, // Q Type
- fchs );
- break;
- }
-}
-
-
-static void ProcessELS_Reply(
- CPQFCHBA* cpqfcHBAdata, TachFCHDR_GCMND* fchs)
-{
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- ULONG ox_id = (fchs->ox_rx_id >>16);
- ULONG ls_reject_code;
- PFC_LOGGEDIN_PORT pLoggedInPort, pLastLoggedInPort;
-
- // If this is a valid reply, then we MUST have sent a request.
- // Verify that we can find a valid request OX_ID corresponding to
- // this reply
-
-
- if( Exchanges->fcExchange[(fchs->ox_rx_id >>16)].type == 0)
- {
- printk(" *Discarding ACC/RJT frame, xID %04X/%04X* ",
- ox_id, fchs->ox_rx_id & 0xffff);
- goto Quit; // exit this routine
- }
-
-
- // Is the reply a RJT (reject)?
- if( (fchs->pl[0] & 0xFFFFL) == 0x01) // Reject reply?
- {
-// ****** REJECT REPLY ********
- switch( Exchanges->fcExchange[ox_id].type )
- {
-
- case ELS_FDISC: // we sent out Fabric Discovery
- case ELS_FLOGI: // we sent out FLOGI
-
- printk("RJT received on Fabric Login from %Xh, reason %Xh\n",
- fchs->s_id, fchs->pl[1]);
-
- break;
-
- default:
- break;
- }
-
- goto Done;
- }
-
- // OK, we have an ACCept...
- // What's the ACC type? (according to what we sent)
- switch( Exchanges->fcExchange[ox_id].type )
- {
-
- case ELS_PLOGI: // we sent out PLOGI
- if( !verify_PLOGI( fcChip, fchs, &ls_reject_code) )
- {
- LOGIN_PAYLOAD logi; // FC-PH Port Login
-
- // login ACC payload acceptable; search for WWN in our list
- // of fcPorts
-
- BigEndianSwap( (UCHAR*)&fchs->pl[0], (UCHAR*)&logi, sizeof(logi));
-
- pLoggedInPort = fcFindLoggedInPort(
- fcChip,
- NULL, // don't search Scsi Nexus
- 0, // don't search linked list for port_id
- &logi.port_name[0], // search linked list for WWN
- &pLastLoggedInPort); // must return non-NULL; when a port_id
- // is not found, this pointer marks the
- // end of the singly linked list
-
- if( pLoggedInPort == NULL) // WWN not found - new port
- {
-
- pLoggedInPort = CreateFcPort(
- cpqfcHBAdata,
- pLastLoggedInPort,
- fchs,
- &logi);
-
- if( pLoggedInPort == NULL )
- {
- printk(" cpqfcTS: New port allocation failed - lost FC device!\n");
- // Now Q a LOGOut Request, since we won't be talking to that device
-
- goto Done; // exit with error! dropped login frame
- }
- }
- else // WWN was already known. Ensure that any open
- // exchanges for this WWN are terminated.
- // NOTE: It's possible that a device can change its
- // 24-bit port_id after a Link init or Fabric change
- // (e.g. LIP or Fabric RSCN). In that case, the old
- // 24-bit port_id may be duplicated, or no longer exist.
- {
-
- cpqfcTSTerminateExchange( cpqfcHBAdata,
- &pLoggedInPort->ScsiNexus, PORTID_CHANGED);
- }
-
- // We have an fcPort struct - set fields accordingly
- // not PDISC, originator
- SetLoginFields( pLoggedInPort, fchs, FALSE, TRUE);
-
- // We just set a "port_id"; is it duplicated?
- TestDuplicatePortId( cpqfcHBAdata, pLoggedInPort);
-
- // For Fabric operation, we issued PLOGI to 0xFFFFFC
- // so we can send SCR (State Change Registration)
- // Check for this special case...
- if( fchs->s_id == 0xFFFFFC )
- {
- // PLOGI ACC was a Fabric response... issue SCR
- fchs->s_id = 0xFFFFFD; // address for SCR
- cpqfcTSPutLinkQue( cpqfcHBAdata, ELS_SCR, fchs);
- }
-
- else
- {
- // Now we need a PRLI to enable FCP-SCSI operation
- // set flags and Q up a ELS_PRLI
- cpqfcTSPutLinkQue( cpqfcHBAdata, ELS_PRLI, fchs);
- }
- }
- else
- {
- // login payload unacceptable - reason in ls_reject_code
- // Q up a Logout Request
- printk("Login Payload unacceptable\n");
-
- }
- break;
-
-
- // PDISC logic very similar to PLOGI, except we never want
- // to allocate mem for "new" port, and we set flags differently
- // (might combine later with PLOGI logic for efficiency)
- case ELS_PDISC: // we sent out PDISC
- if( !verify_PLOGI( fcChip, fchs, &ls_reject_code) )
- {
- LOGIN_PAYLOAD logi; // FC-PH Port Login
- BOOLEAN NeedLogin = FALSE;
-
- // login payload acceptable; search for WWN in our list
- // of (previously seen) fcPorts
-
- BigEndianSwap( (UCHAR*)&fchs->pl[0], (UCHAR*)&logi, sizeof(logi));
-
- pLoggedInPort = fcFindLoggedInPort(
- fcChip,
- NULL, // don't search Scsi Nexus
- 0, // don't search linked list for port_id
- &logi.port_name[0], // search linked list for WWN
- &pLastLoggedInPort); // must return non-NULL; when a port_id
- // is not found, this pointer marks the
- // end of the singly linked list
-
- if( pLoggedInPort != NULL) // WWN found?
- {
- // WWN has same port_id as last login? (Of course, a properly
- // working FC device should NEVER ACCept a PDISC if it's
- // port_id changed, but check just in case...)
- if( (fchs->s_id & 0xFFFFFF) == pLoggedInPort->port_id)
- {
- // Yes. We were expecting PDISC?
- if( pLoggedInPort->pdisc )
- {
- int i;
-
-
- // PDISC expected -- set fields. (PDISC, Originator)
- SetLoginFields( pLoggedInPort, fchs, TRUE, TRUE);
-
- // We are ready to resume FCP-SCSI to this device...
- // Do we need to start anything that was Queued?
-
- for( i=0; i< TACH_SEST_LEN; i++)
- {
- // see if any exchange for this PDISC'd port was queued
- if( ((fchs->s_id &0xFFFFFF) ==
- (Exchanges->fcExchange[i].fchs.d_id & 0xFFFFFF))
- &&
- (Exchanges->fcExchange[i].status & EXCHANGE_QUEUED))
- {
- fchs->reserved = i; // copy ExchangeID
-// printk(" *Q x_ID %Xh after PDISC* ",i);
-
- cpqfcTSPutLinkQue( cpqfcHBAdata, EXCHANGE_QUEUED, fchs );
- }
- }
-
- // Complete commands Q'd while we were waiting for Login
-
- UnblockScsiDevice( cpqfcHBAdata->HostAdapter, pLoggedInPort);
- }
- else
- {
- printk("Not expecting PDISC (pdisc=FALSE)\n");
- NeedLogin = TRUE;
- }
- }
- else
- {
- printk("PDISC PortID change: old %Xh, new %Xh\n",
- pLoggedInPort->port_id, fchs->s_id &0xFFFFFF);
- NeedLogin = TRUE;
-
- }
- }
- else
- {
- printk("PDISC ACC from unknown WWN\n");
- NeedLogin = TRUE;
- }
-
- if( NeedLogin)
- {
-
- // The PDISC failed. Set login struct flags accordingly,
- // terminate any I/O to this port, and Q a PLOGI
- if( pLoggedInPort ) // FC device previously known?
- {
-
- cpqfcTSPutLinkQue( cpqfcHBAdata,
- ELS_LOGO, // Q Type
- fchs ); // has port_id to send to
-
- // There are a variety of error scenarios which can result
- // in PDISC failure, so as a catchall, add the check for
- // duplicate port_id.
- TestDuplicatePortId( cpqfcHBAdata, pLoggedInPort);
-
-// TriggerHBA( fcChip->Registers.ReMapMemBase, 0);
- pLoggedInPort->pdisc = FALSE;
- pLoggedInPort->prli = FALSE;
- pLoggedInPort->plogi = FALSE;
-
- cpqfcTSTerminateExchange( cpqfcHBAdata,
- &pLoggedInPort->ScsiNexus, PORTID_CHANGED);
- }
- cpqfcTSPutLinkQue( cpqfcHBAdata, ELS_PLOGI, fchs );
- }
- }
- else
- {
- // login payload unacceptable - reason in ls_reject_code
- // Q up a Logout Request
- printk("ERROR: Login Payload unacceptable!\n");
-
- }
-
- break;
-
-
-
- case ELS_PRLI: // we sent out PRLI
-
-
- pLoggedInPort = fcFindLoggedInPort(
- fcChip,
- NULL, // don't search Scsi Nexus
- (fchs->s_id & 0xFFFFFF), // search linked list for port_id
- NULL, // DON'T search linked list for WWN
- NULL); // don't care
-
- if( pLoggedInPort == NULL )
- {
- // huh?
- printk(" Unexpected PRLI ACCept frame!\n");
-
- // Q a LOGOut here?
-
- goto Done;
- }
-
- // verify the PRLI ACC payload
- if( !verify_PRLI( fchs, &ls_reject_code) )
- {
- // PRLI Reply is acceptable; were we expecting it?
- if( pLoggedInPort->plogi )
- {
- // yes, we expected the PRLI ACC (not PDISC; Originator)
- SetLoginFields( pLoggedInPort, fchs, FALSE, TRUE);
-
- // OK, let's send a REPORT_LUNS command to determine
- // whether VSA or PDA FCP-LUN addressing is used.
-
- cpqfcTSPutLinkQue( cpqfcHBAdata, SCSI_REPORT_LUNS, fchs );
-
- // It's possible that a device we were talking to changed
- // port_id, and has logged back in. This function ensures
- // that I/O will resume.
- UnblockScsiDevice( cpqfcHBAdata->HostAdapter, pLoggedInPort);
-
- }
- else
- {
- // huh?
- printk(" (unexpected) PRLI ACCept with plogi FALSE\n");
-
- // Q a LOGOut here?
- goto Done;
- }
- }
- else
- {
- printk(" PRLI ACCept payload failed verify\n");
-
- // Q a LOGOut here?
- }
-
- break;
-
- case ELS_FLOGI: // we sent out FLOGI (Fabric Login)
-
- // update the upper 16 bits of our port_id in Tachyon
- // the switch adds those upper 16 bits when responding
- // to us (i.e. we are the destination_id)
- fcChip->Registers.my_al_pa = (fchs->d_id & 0xFFFFFF);
- writel( fcChip->Registers.my_al_pa,
- fcChip->Registers.ReMapMemBase + TL_MEM_TACH_My_ID);
-
- // now send out a PLOGI to the well known port_id 0xFFFFFC
- fchs->s_id = 0xFFFFFC;
- cpqfcTSPutLinkQue( cpqfcHBAdata, ELS_PLOGI, fchs);
-
- break;
-
-
- case ELS_FDISC: // we sent out FDISC (Fabric Discovery (Login))
-
- printk( " ELS_FDISC success ");
- break;
-
-
- case ELS_SCR: // we sent out State Change Registration
- // now we can issue Name Service Request to find any
- // Fabric-connected devices we might want to login to.
-
-
- fchs->s_id = 0xFFFFFC; // Name Server Address
- cpqfcTSPutLinkQue( cpqfcHBAdata, FCS_NSR, fchs);
-
-
- break;
-
-
- default:
- printk(" *Discarding unknown ACC frame, xID %04X/%04X* ",
- ox_id, fchs->ox_rx_id & 0xffff);
- break;
- }
-
-
-Done:
- // Regardless of whether the Reply is valid or not, the
- // the exchange is done - complete
- cpqfcTSCompleteExchange(cpqfcHBAdata->PciDev, fcChip, (fchs->ox_rx_id >>16));
-
-Quit:
- return;
-}
-
-
-
-
-
-
-// **************** Fibre Channel Services **************
-// This is where we process the Directory (Name) Service Reply
-// to know which devices are on the Fabric
-
-static void ProcessFCS_Reply(
- CPQFCHBA* cpqfcHBAdata, TachFCHDR_GCMND* fchs)
-{
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- ULONG ox_id = (fchs->ox_rx_id >>16);
-// ULONG ls_reject_code;
-// PFC_LOGGEDIN_PORT pLoggedInPort, pLastLoggedInPort;
-
- // If this is a valid reply, then we MUST have sent a request.
- // Verify that we can find a valid request OX_ID corresponding to
- // this reply
-
- if( Exchanges->fcExchange[(fchs->ox_rx_id >>16)].type == 0)
- {
- printk(" *Discarding Reply frame, xID %04X/%04X* ",
- ox_id, fchs->ox_rx_id & 0xffff);
- goto Quit; // exit this routine
- }
-
-
- // OK, we were expecting it. Now check to see if it's a
- // "Name Service" Reply, and if so force a re-validation of
- // Fabric device logins (i.e. Start the login timeout and
- // send PDISC or PLOGI)
- // (Endianess Byte Swap?)
- if( fchs->pl[1] == 0x02FC ) // Name Service
- {
- // got a new (or NULL) list of Fabric attach devices...
- // Invalidate current logins
-
- PFC_LOGGEDIN_PORT pLoggedInPort = &fcChip->fcPorts;
- while( pLoggedInPort ) // for all ports which are expecting
- // PDISC after the next LIP, set the
- // logoutTimer
- {
-
- if( (pLoggedInPort->port_id & 0xFFFF00) // Fabric device?
- &&
- (pLoggedInPort->port_id != 0xFFFFFC) ) // NOT the F_Port
- {
- pLoggedInPort->LOGO_timer = 6; // what's the Fabric timeout??
- // suspend any I/O in progress until
- // PDISC received...
- pLoggedInPort->prli = FALSE; // block FCP-SCSI commands
- }
-
- pLoggedInPort = pLoggedInPort->pNextPort;
- }
-
- if( fchs->pl[2] == 0x0280) // ACCept?
- {
- // Send PLOGI or PDISC to these Fabric devices
- SendLogins( cpqfcHBAdata, &fchs->pl[4] );
- }
-
-
- // As of this writing, the only reason to reject is because NO
- // devices are left on the Fabric. We already started
- // "logged out" timers; if the device(s) don't come
- // back, we'll do the implicit logout in the heart beat
- // timer routine
- else // ReJecT
- {
- // this just means no Fabric device is visible at this instant
- }
- }
-
- // Regardless of whether the Reply is valid or not, the
- // the exchange is done - complete
- cpqfcTSCompleteExchange(cpqfcHBAdata->PciDev, fcChip, (fchs->ox_rx_id >>16));
-
-Quit:
- return;
-}
-
-
-
-
-
-
-
-static void AnalyzeIncomingFrame(
- CPQFCHBA *cpqfcHBAdata,
- ULONG QNdx )
-{
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- PFC_LINK_QUE fcLQ = cpqfcHBAdata->fcLQ;
- TachFCHDR_GCMND* fchs =
- (TachFCHDR_GCMND*)fcLQ->Qitem[QNdx].ulBuff;
-// ULONG ls_reject_code; // reason for rejecting login
- LONG ExchangeID;
-// FC_LOGGEDIN_PORT *pLoggedInPort;
- BOOLEAN AbortAccept;
-
- ENTER("AnalyzeIncomingFrame");
-
-
-
- switch( fcLQ->Qitem[QNdx].Type) // FCP or Unknown
- {
-
- case SFQ_UNKNOWN: // unknown frame (e.g. LIP position frame, NOP, etc.)
-
-
- // ********* FC-4 Device Data/ Fibre Channel Service *************
- if( ((fchs->d_id &0xF0000000) == 0) // R_CTL (upper nibble) 0x0?
- &&
- (fchs->f_ctl & 0x20000000) ) // TYPE 20h is Fibre Channel Service
- {
-
- // ************** FCS Reply **********************
-
- if( (fchs->d_id & 0xff000000L) == 0x03000000L) // (31:23 R_CTL)
- {
- ProcessFCS_Reply( cpqfcHBAdata, fchs );
-
- } // end of FCS logic
-
- }
-
-
- // *********** Extended Link Service **************
-
- else if( fchs->d_id & 0x20000000 // R_CTL 0x2?
- &&
- (fchs->f_ctl & 0x01000000) ) // TYPE = 1
- {
-
- // these frames are either a response to
- // something we sent (0x23) or "unsolicited"
- // frames (0x22).
-
-
- // **************Extended Link REPLY **********************
- // R_CTL Solicited Control Reply
-
- if( (fchs->d_id & 0xff000000L) == 0x23000000L) // (31:23 R_CTL)
- {
-
- ProcessELS_Reply( cpqfcHBAdata, fchs );
-
- } // end of "R_CTL Solicited Control Reply"
-
-
-
-
- // **************Extended Link REQUEST **********************
- // (unsolicited commands from another port or task...)
-
- // R_CTL Ext Link REQUEST
- else if( (fchs->d_id & 0xff000000L) == 0x22000000L &&
- (fchs->ox_rx_id != 0xFFFFFFFFL) ) // (ignore LIP frame)
- {
-
-
-
- ProcessELS_Request( cpqfcHBAdata, fchs );
-
- }
-
-
-
- // ************** LILP **********************
- else if( (fchs->d_id & 0xff000000L) == 0x22000000L &&
- (fchs->ox_rx_id == 0xFFFFFFFFL)) // (e.g., LIP frames)
-
- {
- // SANMark specifies that when available, we must use
- // the LILP frame to determine which ALPAs to send Port Discovery
- // to...
-
- if( fchs->pl[0] == 0x0711L) // ELS_PLOGI?
- {
-// UCHAR *ptr = (UCHAR*)&fchs->pl[1];
-// printk(" %d ALPAs found\n", *ptr);
- memcpy( fcChip->LILPmap, &fchs->pl[1], 32*4); // 32 DWORDs
- fcChip->Options.LILPin = 1; // our LILPmap is valid!
- // now post to make Port Discovery happen...
- cpqfcTSPutLinkQue( cpqfcHBAdata, LINKACTIVE, fchs);
- }
- }
- }
-
-
- // ***************** BASIC LINK SERVICE *****************
-
- else if( fchs->d_id & 0x80000000 // R_CTL:
- && // Basic Link Service Request
- !(fchs->f_ctl & 0xFF000000) ) // type=0 for BLS
- {
-
- // Check for ABTS (Abort Sequence)
- if( (fchs->d_id & 0x8F000000) == 0x81000000)
- {
- // look for OX_ID, S_ID pair that matches in our
- // fcExchanges table; if found, reply with ACCept and complete
- // the exchange
-
- // Per PLDA, an ABTS is sent by an initiator; therefore
- // assume that if we have an exhange open to the port who
- // sent ABTS, it will be the d_id of what we sent.
- for( ExchangeID = 0, AbortAccept=FALSE;
- ExchangeID < TACH_SEST_LEN; ExchangeID++)
- {
- // Valid "target" exchange 24-bit port_id matches?
- // NOTE: For the case of handling Intiator AND Target
- // functions on the same chip, we can have TWO Exchanges
- // with the same OX_ID -- OX_ID/FFFF for the CMND, and
- // OX_ID/RX_ID for the XRDY or DATA frame(s). Ideally,
- // we would like to support ABTS from Initiators or Targets,
- // but it's not clear that can be supported on Tachyon for
- // all cases (requires more investigation).
-
- if( (Exchanges->fcExchange[ ExchangeID].type == SCSI_TWE ||
- Exchanges->fcExchange[ ExchangeID].type == SCSI_TRE)
- &&
- ((Exchanges->fcExchange[ ExchangeID].fchs.d_id & 0xFFFFFF) ==
- (fchs->s_id & 0xFFFFFF)) )
- {
-
- // target xchnge port_id matches -- how about OX_ID?
- if( (Exchanges->fcExchange[ ExchangeID].fchs.ox_rx_id &0xFFFF0000)
- == (fchs->ox_rx_id & 0xFFFF0000) )
- // yes! post ACCept response; will be completed by fcStart
- {
- Exchanges->fcExchange[ ExchangeID].status = TARGET_ABORT;
-
- // copy (add) rx_id field for simplified ACCept reply
- fchs->ox_rx_id =
- Exchanges->fcExchange[ ExchangeID].fchs.ox_rx_id;
-
- cpqfcTSPutLinkQue( cpqfcHBAdata,
- BLS_ABTS_ACC, // Q Type
- fchs ); // void QueContent
- AbortAccept = TRUE;
- printk("ACCepting ABTS for x_ID %8.8Xh, SEST pair %8.8Xh\n",
- fchs->ox_rx_id, Exchanges->fcExchange[ ExchangeID].fchs.ox_rx_id);
- break; // ABTS can affect only ONE exchange -exit loop
- }
- }
- } // end of FOR loop
- if( !AbortAccept ) // can't ACCept ABTS - send Reject
- {
- printk("ReJecTing: can't find ExchangeID %8.8Xh for ABTS command\n",
- fchs->ox_rx_id);
- if( Exchanges->fcExchange[ ExchangeID].type
- &&
- !(fcChip->SEST->u[ ExchangeID].IWE.Hdr_Len
- & 0x80000000))
- {
- cpqfcTSCompleteExchange( cpqfcHBAdata->PciDev, fcChip, ExchangeID);
- }
- else
- {
- printk("Unexpected ABTS ReJecT! SEST[%X] Dword 0: %Xh\n",
- ExchangeID, fcChip->SEST->u[ ExchangeID].IWE.Hdr_Len);
- }
- }
- }
-
- // Check for BLS {ABTS? (Abort Sequence)} ACCept
- else if( (fchs->d_id & 0x8F000000) == 0x84000000)
- {
- // target has responded with ACC for our ABTS;
- // complete the indicated exchange with ABORTED status
- // Make no checks for correct RX_ID, since
- // all we need to conform ABTS ACC is the OX_ID.
- // Verify that the d_id matches!
-
- ExchangeID = (fchs->ox_rx_id >> 16) & 0x7FFF; // x_id from ACC
-// printk("ABTS ACC x_ID 0x%04X 0x%04X, status %Xh\n",
-// fchs->ox_rx_id >> 16, fchs->ox_rx_id & 0xffff,
-// Exchanges->fcExchange[ExchangeID].status);
-
-
-
- if( ExchangeID < TACH_SEST_LEN ) // x_ID makes sense
- {
- // Does "target" exchange 24-bit port_id match?
- // (See "NOTE" above for handling Intiator AND Target in
- // the same device driver)
- // First, if this is a target response, then we originated
- // (initiated) it with BLS_ABTS:
-
- if( (Exchanges->fcExchange[ ExchangeID].type == BLS_ABTS)
-
- &&
- // Second, does the source of this ACC match the destination
- // of who we originally sent it to?
- ((Exchanges->fcExchange[ ExchangeID].fchs.d_id & 0xFFFFFF) ==
- (fchs->s_id & 0xFFFFFF)) )
- {
- cpqfcTSCompleteExchange( cpqfcHBAdata->PciDev, fcChip, ExchangeID );
- }
- }
- }
- // Check for BLS {ABTS? (Abort Sequence)} ReJecT
- else if( (fchs->d_id & 0x8F000000) == 0x85000000)
- {
- // target has responded with RJT for our ABTS;
- // complete the indicated exchange with ABORTED status
- // Make no checks for correct RX_ID, since
- // all we need to conform ABTS ACC is the OX_ID.
- // Verify that the d_id matches!
-
- ExchangeID = (fchs->ox_rx_id >> 16) & 0x7FFF; // x_id from ACC
-// printk("BLS_ABTS RJT on Exchange 0x%04X 0x%04X\n",
-// fchs->ox_rx_id >> 16, fchs->ox_rx_id & 0xffff);
-
- if( ExchangeID < TACH_SEST_LEN ) // x_ID makes sense
- {
- // Does "target" exchange 24-bit port_id match?
- // (See "NOTE" above for handling Intiator AND Target in
- // the same device driver)
- // First, if this is a target response, then we originated
- // (initiated) it with BLS_ABTS:
-
- if( (Exchanges->fcExchange[ ExchangeID].type == BLS_ABTS)
-
- &&
- // Second, does the source of this ACC match the destination
- // of who we originally sent it to?
- ((Exchanges->fcExchange[ ExchangeID].fchs.d_id & 0xFFFFFF) ==
- (fchs->s_id & 0xFFFFFF)) )
- {
- // YES! NOTE: There is a bug in CPQ's RA-4000 box
- // where the "reason code" isn't returned in the payload
- // For now, simply presume the reject is because the target
- // already completed the exchange...
-
-// printk("complete x_ID %Xh on ABTS RJT\n", ExchangeID);
- cpqfcTSCompleteExchange( cpqfcHBAdata->PciDev, fcChip, ExchangeID );
- }
- }
- } // end of ABTS check
- } // end of Basic Link Service Request
- break;
-
- default:
- printk("AnalyzeIncomingFrame: unknown type: %Xh(%d)\n",
- fcLQ->Qitem[QNdx].Type,
- fcLQ->Qitem[QNdx].Type);
- break;
- }
-}
-
-
-// Function for Port Discovery necessary after every FC
-// initialization (e.g. LIP).
-// Also may be called if from Fabric Name Service logic.
-
-static void SendLogins( CPQFCHBA *cpqfcHBAdata, __u32 *FabricPortIds )
-{
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- ULONG ulStatus=0;
- TachFCHDR_GCMND fchs; // copy fields for transmission
- int i;
- ULONG loginType;
- LONG ExchangeID;
- PFC_LOGGEDIN_PORT pLoggedInPort;
- __u32 PortIds[ number_of_al_pa];
- int NumberOfPorts=0;
-
- // We're going to presume (for now) that our limit of Fabric devices
- // is the same as the number of alpa on a private loop (126 devices).
- // (Of course this could be changed to support however many we have
- // memory for).
- memset( &PortIds[0], 0, sizeof(PortIds));
-
- // First, check if this login is for our own Link Initialization
- // (e.g. LIP on FC-AL), or if we have knowledge of Fabric devices
- // from a switch. If we are logging into Fabric devices, we'll
- // have a non-NULL FabricPortId pointer
-
- if( FabricPortIds != NULL) // may need logins
- {
- int LastPort=FALSE;
- i = 0;
- while( !LastPort)
- {
- // port IDs From NSR payload; byte swap needed?
- BigEndianSwap( (UCHAR*)FabricPortIds, (UCHAR*)&PortIds[i], 4);
-
-// printk("FPortId[%d] %Xh ", i, PortIds[i]);
- if( PortIds[i] & 0x80000000)
- LastPort = TRUE;
-
- PortIds[i] &= 0xFFFFFF; // get 24-bit port_id
- // some non-Fabric devices (like the Crossroads Fibre/Scsi bridge)
- // erroneously use ALPA 0.
- if( PortIds[i] ) // need non-zero port_id...
- i++;
-
- if( i >= number_of_al_pa ) // (in)sanity check
- break;
- FabricPortIds++; // next...
- }
-
- NumberOfPorts = i;
-// printk("NumberOf Fabric ports %d", NumberOfPorts);
- }
-
- else // need to send logins on our "local" link
- {
-
- // are we a loop port? If so, check for reception of LILP frame,
- // and if received use it (SANMark requirement)
- if( fcChip->Options.LILPin )
- {
- int j=0;
- // sanity check on number of ALPAs from LILP frame...
- // For format of LILP frame, see FC-AL specs or
- // "Fibre Channel Bench Reference", J. Stai, 1995 (ISBN 1-879936-17-8)
- // First byte is number of ALPAs
- i = fcChip->LILPmap[0] >= (32*4) ? 32*4 : fcChip->LILPmap[0];
- NumberOfPorts = i;
-// printk(" LILP alpa count %d ", i);
- while( i > 0)
- {
- PortIds[j] = fcChip->LILPmap[1+ j];
- j++; i--;
- }
- }
- else // have to send login to everybody
- {
- int j=0;
- i = number_of_al_pa;
- NumberOfPorts = i;
- while( i > 0)
- {
- PortIds[j] = valid_al_pa[j]; // all legal ALPAs
- j++; i--;
- }
- }
- }
-
-
- // Now we have a copy of the port_ids (and how many)...
- for( i = 0; i < NumberOfPorts; i++)
- {
- // 24-bit FC Port ID
- fchs.s_id = PortIds[i]; // note: only 8-bits used for ALPA
-
-
- // don't log into ourselves (Linux Scsi disk scan will stop on
- // no TARGET support error on us, and quit trying for rest of devices)
- if( (fchs.s_id & 0xFF ) == (fcChip->Registers.my_al_pa & 0xFF) )
- continue;
-
- // fabric login needed?
- if( (fchs.s_id == 0) ||
- (fcChip->Options.fabric == 1) )
- {
- fcChip->Options.flogi = 1; // fabric needs longer for login
- // Do we need FLOGI or FDISC?
- pLoggedInPort = fcFindLoggedInPort(
- fcChip,
- NULL, // don't search SCSI Nexus
- 0xFFFFFC, // search linked list for Fabric port_id
- NULL, // don't search WWN
- NULL); // (don't care about end of list)
-
- if( pLoggedInPort ) // If found, we have prior experience with
- // this port -- check whether PDISC is needed
- {
- if( pLoggedInPort->flogi )
- {
- // does the switch support FDISC?? (FLOGI for now...)
- loginType = ELS_FLOGI; // prior FLOGI still valid
- }
- else
- loginType = ELS_FLOGI; // expired FLOGI
- }
- else // first FLOGI?
- loginType = ELS_FLOGI;
-
-
- fchs.s_id = 0xFFFFFE; // well known F_Port address
-
- // Fabrics are not required to support FDISC, and
- // it's not clear if that helps us anyway, since
- // we'll want a Name Service Request to re-verify
- // visible devices...
- // Consequently, we always want our upper 16 bit
- // port_id to be zero (we'll be rejected if we
- // use our prior port_id if we've been plugged into
- // a different switch port).
- // Trick Tachyon to send to ALPA 0 (see TL/TS UG, pg 87)
- // If our ALPA is 55h for instance, we want the FC frame
- // s_id to be 0x000055, while Tach's my_al_pa register
- // must be 0x000155, to force an OPN at ALPA 0
- // (the Fabric port)
- fcChip->Registers.my_al_pa &= 0xFF; // only use ALPA for FLOGI
- writel( fcChip->Registers.my_al_pa | 0x0100,
- fcChip->Registers.ReMapMemBase + TL_MEM_TACH_My_ID);
- }
-
- else // not FLOGI...
- {
- // should we send PLOGI or PDISC? Check if any prior port_id
- // (e.g. alpa) completed a PLOGI/PRLI exchange by checking
- // the pdisc flag.
-
- pLoggedInPort = fcFindLoggedInPort(
- fcChip,
- NULL, // don't search SCSI Nexus
- fchs.s_id, // search linked list for al_pa
- NULL, // don't search WWN
- NULL); // (don't care about end of list)
-
-
-
- if( pLoggedInPort ) // If found, we have prior experience with
- // this port -- check whether PDISC is needed
- {
- if( pLoggedInPort->pdisc )
- {
- loginType = ELS_PDISC; // prior PLOGI and PRLI maybe still valid
-
- }
- else
- loginType = ELS_PLOGI; // prior knowledge, but can't use PDISC
- }
- else // never talked to this port_id before
- loginType = ELS_PLOGI; // prior knowledge, but can't use PDISC
- }
-
-
-
- ulStatus = cpqfcTSBuildExchange(
- cpqfcHBAdata,
- loginType, // e.g. PLOGI
- &fchs, // no incoming frame (we are originator)
- NULL, // no data (no scatter/gather list)
- &ExchangeID );// fcController->fcExchanges index, -1 if failed
-
- if( !ulStatus ) // Exchange setup OK?
- {
- ulStatus = cpqfcTSStartExchange( cpqfcHBAdata, ExchangeID );
- if( !ulStatus )
- {
- // submitted to Tach's Outbound Que (ERQ PI incremented)
- // waited for completion for ELS type (Login frames issued
- // synchronously)
-
- if( loginType == ELS_PDISC )
- {
- // now, we really shouldn't Revalidate SEST exchanges until
- // we get an ACC reply from our target and verify that
- // the target address/WWN is unchanged. However, when a fast
- // target gets the PDISC, they can send SEST Exchange data
- // before we even get around to processing the PDISC ACC.
- // Consequently, we lose the I/O.
- // To avoid this, go ahead and Revalidate when the PDISC goes
- // out, anticipating that the ACC will be truly acceptable
- // (this happens 99.9999....% of the time).
- // If we revalidate a SEST write, and write data goes to a
- // target that is NOT the one we originated the WRITE to,
- // that target is required (FCP-SCSI specs, etc) to discard
- // our WRITE data.
-
- // Re-validate SEST entries (Tachyon hardware assists)
- RevalidateSEST( cpqfcHBAdata->HostAdapter, pLoggedInPort);
- //TriggerHBA( fcChip->Registers.ReMapMemBase, 1);
- }
- }
- else // give up immediately on error
- {
-#ifdef LOGIN_DBG
- printk("SendLogins: fcStartExchange failed: %Xh\n", ulStatus );
-#endif
- break;
- }
-
-
- if( fcChip->Registers.FMstatus.value & 0x080 ) // LDn during Port Disc.
- {
- ulStatus = LNKDWN_OSLS;
-#ifdef LOGIN_DBG
- printk("SendLogins: PortDisc aborted (LDn) @alpa %Xh\n", fchs.s_id);
-#endif
- break;
- }
- // Check the exchange for bad status (i.e. FrameTimeOut),
- // and complete on bad status (most likely due to BAD_ALPA)
- // on LDn, DPC function may already complete (ABORT) a started
- // exchange, so check type first (type = 0 on complete).
- if( Exchanges->fcExchange[ExchangeID].status )
- {
-#ifdef LOGIN_DBG
- printk("completing x_ID %X on status %Xh\n",
- ExchangeID, Exchanges->fcExchange[ExchangeID].status);
-#endif
- cpqfcTSCompleteExchange( cpqfcHBAdata->PciDev, fcChip, ExchangeID);
- }
- }
- else // Xchange setup failed...
- {
-#ifdef LOGIN_DBG
- printk("FC: cpqfcTSBuildExchange failed: %Xh\n", ulStatus );
-#endif
- break;
- }
- }
- if( !ulStatus )
- {
- // set the event signifying that all ALPAs were sent out.
-#ifdef LOGIN_DBG
- printk("SendLogins: PortDiscDone\n");
-#endif
- cpqfcHBAdata->PortDiscDone = 1;
-
-
- // TL/TS UG, pg. 184
- // 0x0065 = 100ms for RT_TOV
- // 0x01f5 = 500ms for ED_TOV
- fcChip->Registers.ed_tov.value = 0x006501f5L;
- writel( fcChip->Registers.ed_tov.value,
- (fcChip->Registers.ed_tov.address));
-
- // set the LP_TOV back to ED_TOV (i.e. 500 ms)
- writel( 0x00000010, fcChip->Registers.ReMapMemBase +TL_MEM_FM_TIMEOUT2);
- }
- else
- {
- printk("SendLogins: failed at xchng %Xh, alpa %Xh, status %Xh\n",
- ExchangeID, fchs.s_id, ulStatus);
- }
- LEAVE("SendLogins");
-
-}
-
-
-// for REPORT_LUNS documentation, see "In-Depth Exploration of Scsi",
-// D. Deming, 1994, pg 7-19 (ISBN 1-879936-08-9)
-static void ScsiReportLunsDone(Scsi_Cmnd *Cmnd)
-{
- struct Scsi_Host *HostAdapter = Cmnd->device->host;
- CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- PFC_LOGGEDIN_PORT pLoggedInPort;
- int LunListLen=0;
- int i;
- ULONG x_ID = 0xFFFFFFFF;
- UCHAR *ucBuff = Cmnd->request_buffer;
-
-// printk("cpqfcTS: ReportLunsDone \n");
- // first, we need to find the Exchange for this command,
- // so we can find the fcPort struct to make the indicated
- // changes.
- for( i=0; i< TACH_SEST_LEN; i++)
- {
- if( Exchanges->fcExchange[i].type // exchange defined?
- &&
- (Exchanges->fcExchange[i].Cmnd == Cmnd) ) // matches?
-
- {
- x_ID = i; // found exchange!
- break;
- }
- }
- if( x_ID == 0xFFFFFFFF)
- {
-// printk("cpqfcTS: ReportLuns failed - no FC Exchange\n");
- goto Done; // Report Luns FC Exchange gone;
- // exchange probably Terminated by Implicit logout
- }
-
-
- // search linked list for the port_id we sent INQUIRY to
- pLoggedInPort = fcFindLoggedInPort( fcChip,
- NULL, // DON'T search Scsi Nexus (we will set it)
- Exchanges->fcExchange[ x_ID].fchs.d_id & 0xFFFFFF,
- NULL, // DON'T search linked list for FC WWN
- NULL); // DON'T care about end of list
-
- if( !pLoggedInPort )
- {
-// printk("cpqfcTS: ReportLuns failed - device gone\n");
- goto Done; // error! can't find logged in Port
- }
- LunListLen = ucBuff[3];
- LunListLen += ucBuff[2]>>8;
-
- if( !LunListLen ) // failed
- {
- // generically speaking, a soft error means we should retry...
- if( (Cmnd->result >> 16) == DID_SOFT_ERROR )
- {
- if( ((Cmnd->sense_buffer[2] & 0xF) == 0x6) &&
- (Cmnd->sense_buffer[12] == 0x29) ) // Sense Code "reset"
- {
- TachFCHDR_GCMND *fchs = &Exchanges->fcExchange[ x_ID].fchs;
- // did we fail because of "check condition, device reset?"
- // e.g. the device was reset (i.e., at every power up)
- // retry the Report Luns
-
- // who are we sending it to?
- // we know this because we have a copy of the command
- // frame from the original Report Lun command -
- // switch the d_id/s_id fields, because the Exchange Build
- // context is "reply to source".
-
- fchs->s_id = fchs->d_id; // (temporarily re-use the struct)
- cpqfcTSPutLinkQue( cpqfcHBAdata, SCSI_REPORT_LUNS, fchs );
- }
- }
- else // probably, the device doesn't support Report Luns
- pLoggedInPort->ScsiNexus.VolumeSetAddressing = 0;
- }
- else // we have LUN info - check VSA mode
- {
- // for now, assume all LUNs will have same addr mode
- // for VSA, payload byte 8 will be 0x40; otherwise, 0
- pLoggedInPort->ScsiNexus.VolumeSetAddressing = ucBuff[8];
-
- // Since we got a Report Luns answer, set lun masking flag
- pLoggedInPort->ScsiNexus.LunMasking = 1;
-
- if( LunListLen > 8*CPQFCTS_MAX_LUN) // We expect CPQFCTS_MAX_LUN max
- LunListLen = 8*CPQFCTS_MAX_LUN;
-
-/*
- printk("Device WWN %08X%08X Reports Luns @: ",
- (ULONG)(pLoggedInPort->u.liWWN &0xFFFFFFFF),
- (ULONG)(pLoggedInPort->u.liWWN>>32));
-
- for( i=8; i<LunListLen+8; i+=8)
- {
- printk("%02X%02X ", ucBuff[i], ucBuff[i+1] );
- }
- printk("\n");
-*/
-
- // Since the device was kind enough to tell us where the
- // LUNs are, lets ensure they are contiguous for Linux's
- // SCSI driver scan, which expects them to start at 0.
- // Since Linux only supports 8 LUNs, only copy the first
- // eight from the report luns command
-
- // e.g., the Compaq RA4x00 f/w Rev 2.54 and above may report
- // LUNs 4001, 4004, etc., because other LUNs are masked from
- // this HBA (owned by someone else). We'll make those appear as
- // LUN 0, 1... to Linux
- {
- int j;
- int AppendLunList = 0;
- // Walk through the LUN list. The 'j' array number is
- // Linux's lun #, while the value of .lun[j] is the target's
- // lun #.
- // Once we build a LUN list, it's possible for a known device
- // to go offline while volumes (LUNs) are added. Later,
- // the device will do another PLOGI ... Report Luns command,
- // and we must not alter the existing Linux Lun map.
- // (This will be very rare).
- for( j=0; j < CPQFCTS_MAX_LUN; j++)
- {
- if( pLoggedInPort->ScsiNexus.lun[j] != 0xFF )
- {
- AppendLunList = 1;
- break;
- }
- }
- if( AppendLunList )
- {
- int k;
- int FreeLunIndex;
-// printk("cpqfcTS: AppendLunList\n");
-
- // If we get a new Report Luns, we cannot change
- // any existing LUN mapping! (Only additive entry)
- // For all LUNs in ReportLun list
- // if RL lun != ScsiNexus lun
- // if RL lun present in ScsiNexus lun[], continue
- // else find ScsiNexus lun[]==FF and add, continue
-
- for( i=8, j=0; i<LunListLen+8 && j< CPQFCTS_MAX_LUN; i+=8, j++)
- {
- if( pLoggedInPort->ScsiNexus.lun[j] != ucBuff[i+1] )
- {
- // something changed from the last Report Luns
- printk(" cpqfcTS: Report Lun change!\n");
- for( k=0, FreeLunIndex=CPQFCTS_MAX_LUN;
- k < CPQFCTS_MAX_LUN; k++)
- {
- if( pLoggedInPort->ScsiNexus.lun[k] == 0xFF)
- {
- FreeLunIndex = k;
- break;
- }
- if( pLoggedInPort->ScsiNexus.lun[k] == ucBuff[i+1] )
- break; // we already masked this lun
- }
- if( k >= CPQFCTS_MAX_LUN )
- {
- printk(" no room for new LUN %d\n", ucBuff[i+1]);
- }
- else if( k == FreeLunIndex ) // need to add LUN
- {
- pLoggedInPort->ScsiNexus.lun[k] = ucBuff[i+1];
-// printk("add [%d]->%02d\n", k, pLoggedInPort->ScsiNexus.lun[k]);
-
- }
- else
- {
- // lun already known
- }
- break;
- }
- }
- // print out the new list...
- for( j=0; j< CPQFCTS_MAX_LUN; j++)
- {
- if( pLoggedInPort->ScsiNexus.lun[j] == 0xFF)
- break; // done
-// printk("[%d]->%02d ", j, pLoggedInPort->ScsiNexus.lun[j]);
- }
- }
- else
- {
-// printk("Linux SCSI LUNs[] -> Device LUNs: ");
- // first time - this is easy
- for( i=8, j=0; i<LunListLen+8 && j< CPQFCTS_MAX_LUN; i+=8, j++)
- {
- pLoggedInPort->ScsiNexus.lun[j] = ucBuff[i+1];
-// printk("[%d]->%02d ", j, pLoggedInPort->ScsiNexus.lun[j]);
- }
-// printk("\n");
- }
- }
- }
-
-Done: ;
-}
-
-extern int is_private_data_of_cpqfc(CPQFCHBA *hba, void * pointer);
-extern void cpqfc_free_private_data(CPQFCHBA *hba, cpqfc_passthru_private_t *data);
-
-static void
-call_scsi_done(Scsi_Cmnd *Cmnd)
-{
- CPQFCHBA *hba;
- hba = (CPQFCHBA *) Cmnd->device->host->hostdata;
- // Was this command a cpqfc passthru ioctl ?
- if (Cmnd->sc_request != NULL && Cmnd->device->host != NULL &&
- Cmnd->device->host->hostdata != NULL &&
- is_private_data_of_cpqfc((CPQFCHBA *) Cmnd->device->host->hostdata,
- Cmnd->sc_request->upper_private_data)) {
- cpqfc_free_private_data(hba,
- Cmnd->sc_request->upper_private_data);
- Cmnd->sc_request->upper_private_data = NULL;
- Cmnd->result &= 0xff00ffff;
- Cmnd->result |= (DID_PASSTHROUGH << 16); // prevents retry
- }
- if (Cmnd->scsi_done != NULL)
- (*Cmnd->scsi_done)(Cmnd);
-}
-
-// After successfully getting a "Process Login" (PRLI) from an
-// FC port, we want to Discover the LUNs so that we know the
-// addressing type (e.g., FCP-SCSI Volume Set Address, Peripheral
-// Unit Device), and whether SSP (Selective Storage Presentation or
-// Lun Masking) has made the LUN numbers non-zero based or
-// non-contiguous. To remain backward compatible with the SCSI-2
-// driver model, which expects a contiguous LUNs starting at 0,
-// will use the ReportLuns info to map from "device" to "Linux"
-// LUNs.
-static void IssueReportLunsCommand(
- CPQFCHBA* cpqfcHBAdata,
- TachFCHDR_GCMND* fchs)
-{
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- PFC_LOGGEDIN_PORT pLoggedInPort;
- struct scsi_cmnd *Cmnd = NULL;
- struct scsi_device *ScsiDev = NULL;
- LONG x_ID;
- ULONG ulStatus;
- UCHAR *ucBuff;
-
- if( !cpqfcHBAdata->PortDiscDone) // cleared by LDn
- {
- printk("Discard Q'd ReportLun command\n");
- goto Done;
- }
-
- // find the device (from port_id) we're talking to
- pLoggedInPort = fcFindLoggedInPort( fcChip,
- NULL, // DON'T search Scsi Nexus
- fchs->s_id & 0xFFFFFF,
- NULL, // DON'T search linked list for FC WWN
- NULL); // DON'T care about end of list
- if( pLoggedInPort ) // we'd BETTER find it!
- {
-
-
- if( !(pLoggedInPort->fcp_info & TARGET_FUNCTION) )
- goto Done; // forget it - FC device not a "target"
-
-
- ScsiDev = scsi_get_host_dev (cpqfcHBAdata->HostAdapter);
- if (!ScsiDev)
- goto Done;
-
- Cmnd = scsi_get_command (ScsiDev, GFP_KERNEL);
- if (!Cmnd)
- goto Done;
-
- ucBuff = pLoggedInPort->ReportLunsPayload;
-
- memset( ucBuff, 0, REPORT_LUNS_PL);
-
- Cmnd->scsi_done = ScsiReportLunsDone;
-
- Cmnd->request_buffer = pLoggedInPort->ReportLunsPayload;
- Cmnd->request_bufflen = REPORT_LUNS_PL;
-
- Cmnd->cmnd[0] = 0xA0;
- Cmnd->cmnd[8] = REPORT_LUNS_PL >> 8;
- Cmnd->cmnd[9] = (UCHAR)REPORT_LUNS_PL;
- Cmnd->cmd_len = 12;
-
- Cmnd->device->channel = pLoggedInPort->ScsiNexus.channel;
- Cmnd->device->id = pLoggedInPort->ScsiNexus.target;
-
-
- ulStatus = cpqfcTSBuildExchange(
- cpqfcHBAdata,
- SCSI_IRE,
- fchs,
- Cmnd, // buffer for Report Lun data
- &x_ID );// fcController->fcExchanges index, -1 if failed
-
- if( !ulStatus ) // Exchange setup?
- {
- ulStatus = cpqfcTSStartExchange( cpqfcHBAdata, x_ID );
- if( !ulStatus )
- {
- // submitted to Tach's Outbound Que (ERQ PI incremented)
- // waited for completion for ELS type (Login frames issued
- // synchronously)
- }
- else
- // check reason for Exchange not being started - we might
- // want to Queue and start later, or fail with error
- {
-
- }
- }
-
- else // Xchange setup failed...
- printk(" cpqfcTSBuildExchange failed: %Xh\n", ulStatus );
- }
- else // like, we just got a PRLI ACC, and now the port is gone?
- {
- printk(" can't send ReportLuns - no login for port_id %Xh\n",
- fchs->s_id & 0xFFFFFF);
- }
-
-
-
-Done:
-
- if (Cmnd)
- scsi_put_command (Cmnd);
- if (ScsiDev)
- scsi_free_host_dev (ScsiDev);
-}
-
-
-
-
-
-
-
-static void CompleteBoardLockCmnd( CPQFCHBA *cpqfcHBAdata)
-{
- int i;
- for( i = CPQFCTS_REQ_QUEUE_LEN-1; i>= 0; i--)
- {
- if( cpqfcHBAdata->BoardLockCmnd[i] != NULL )
- {
- Scsi_Cmnd *Cmnd = cpqfcHBAdata->BoardLockCmnd[i];
- cpqfcHBAdata->BoardLockCmnd[i] = NULL;
- Cmnd->result = (DID_SOFT_ERROR << 16); // ask for retry
-// printk(" BoardLockCmnd[%d] %p Complete, chnl/target/lun %d/%d/%d\n",
-// i,Cmnd, Cmnd->channel, Cmnd->target, Cmnd->lun);
- call_scsi_done(Cmnd);
- }
- }
-}
-
-
-
-
-
-
-// runs every 1 second for FC exchange timeouts and implicit FC device logouts
-
-void cpqfcTSheartbeat( unsigned long ptr )
-{
- CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)ptr;
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- PFC_LOGGEDIN_PORT pLoggedInPort = &fcChip->fcPorts;
- ULONG i;
- unsigned long flags;
- DECLARE_MUTEX_LOCKED(BoardLock);
-
- PCI_TRACE( 0xA8)
-
- if( cpqfcHBAdata->BoardLock) // Worker Task Running?
- goto Skip;
-
- // STOP _que function
- spin_lock_irqsave( cpqfcHBAdata->HostAdapter->host_lock, flags);
-
- PCI_TRACE( 0xA8)
-
-
- cpqfcHBAdata->BoardLock = &BoardLock; // stop Linux SCSI command queuing
-
- // release the IO lock (and re-enable interrupts)
- spin_unlock_irqrestore( cpqfcHBAdata->HostAdapter->host_lock, flags);
-
- // Ensure no contention from _quecommand or Worker process
- CPQ_SPINLOCK_HBA( cpqfcHBAdata)
-
- PCI_TRACE( 0xA8)
-
-
- disable_irq( cpqfcHBAdata->HostAdapter->irq); // our IRQ
-
- // Complete the "bad target" commands (normally only used during
- // initialization, since we aren't supposed to call "scsi_done"
- // inside the queuecommand() function). (this is overly contorted,
- // scsi_done can be safely called from queuecommand for
- // this bad target case. May want to simplify this later)
-
- for( i=0; i< CPQFCTS_MAX_TARGET_ID; i++)
- {
- if( cpqfcHBAdata->BadTargetCmnd[i] )
- {
- Scsi_Cmnd *Cmnd = cpqfcHBAdata->BadTargetCmnd[i];
- cpqfcHBAdata->BadTargetCmnd[i] = NULL;
- Cmnd->result = (DID_BAD_TARGET << 16);
- call_scsi_done(Cmnd);
- }
- else
- break;
- }
-
-
- // logged in ports -- re-login check (ports required to verify login with
- // PDISC after LIP within 2 secs)
-
- // prevent contention
- while( pLoggedInPort ) // for all ports which are expecting
- // PDISC after the next LIP, check to see if
- // time is up!
- {
- // Important: we only detect "timeout" condition on TRANSITION
- // from non-zero to zero
- if( pLoggedInPort->LOGO_timer ) // time-out "armed"?
- {
- if( !(--pLoggedInPort->LOGO_timer) ) // DEC from 1 to 0?
- {
- // LOGOUT time! Per PLDA, PDISC hasn't complete in 2 secs, so
- // issue LOGO request and destroy all I/O with other FC port(s).
-
-/*
- printk(" ~cpqfcTS heartbeat: LOGOut!~ ");
- printk("Linux SCSI Chanl/Target %d/%d (port_id %06Xh) WWN %08X%08X\n",
- pLoggedInPort->ScsiNexus.channel,
- pLoggedInPort->ScsiNexus.target,
- pLoggedInPort->port_id,
- (ULONG)(pLoggedInPort->u.liWWN &0xFFFFFFFF),
- (ULONG)(pLoggedInPort->u.liWWN>>32));
-
-*/
- cpqfcTSImplicitLogout( cpqfcHBAdata, pLoggedInPort);
-
- }
- // else simply decremented - maybe next time...
- }
- pLoggedInPort = pLoggedInPort->pNextPort;
- }
-
-
-
-
-
- // ************ FC EXCHANGE TIMEOUT CHECK **************
-
- for( i=0; i< TACH_MAX_XID; i++)
- {
- if( Exchanges->fcExchange[i].type ) // exchange defined?
- {
-
- if( !Exchanges->fcExchange[i].timeOut ) // time expired
- {
- // Set Exchange timeout status
- Exchanges->fcExchange[i].status |= FC2_TIMEOUT;
-
- if( i >= TACH_SEST_LEN ) // Link Service Exchange
- {
- cpqfcTSCompleteExchange( cpqfcHBAdata->PciDev, fcChip, i); // Don't "abort" LinkService
- }
-
- else // SEST Exchange TO -- may post ABTS to Worker Thread Que
- {
- // (Make sure we don't keep timing it out; let other functions
- // complete it or set the timeOut as needed)
- Exchanges->fcExchange[i].timeOut = 30000; // seconds default
-
- if( Exchanges->fcExchange[i].type
- &
- (BLS_ABTS | BLS_ABTS_ACC ) )
- {
- // For BLS_ABTS*, an upper level might still have
- // an outstanding command waiting for low-level completion.
- // Also, in the case of a WRITE, we MUST get confirmation
- // of either ABTS ACC or RJT before re-using the Exchange.
- // It's possible that the RAID cache algorithm can hang
- // if we fail to complete a WRITE to a LBA, when a READ
- // comes later to that same LBA. Therefore, we must
- // ensure that the target verifies receipt of ABTS for
- // the exchange
-
- printk("~TO Q'd ABTS (x_ID %Xh)~ ", i);
-// TriggerHBA( fcChip->Registers.ReMapMemBase);
-
- // On timeout of a ABTS exchange, check to
- // see if the FC device has a current valid login.
- // If so, restart it.
- pLoggedInPort = fcFindLoggedInPort( fcChip,
- Exchanges->fcExchange[i].Cmnd, // find Scsi Nexus
- 0, // DON'T search linked list for FC port id
- NULL, // DON'T search linked list for FC WWN
- NULL); // DON'T care about end of list
-
- // device exists?
- if( pLoggedInPort ) // device exists?
- {
- if( pLoggedInPort->prli ) // logged in for FCP-SCSI?
- {
- // attempt to restart the ABTS
- printk(" ~restarting ABTS~ ");
- cpqfcTSStartExchange( cpqfcHBAdata, i );
-
- }
- }
- }
- else // not an ABTS
- {
-
- // We expect the WorkerThread to change the xchng type to
- // abort and set appropriate timeout.
- cpqfcTSPutLinkQue( cpqfcHBAdata, BLS_ABTS, &i ); // timed-out
- }
- }
- }
- else // time not expired...
- {
- // decrement timeout: 1 or more seconds left
- --Exchanges->fcExchange[i].timeOut;
- }
- }
- }
-
-
- enable_irq( cpqfcHBAdata->HostAdapter->irq);
-
-
- CPQ_SPINUNLOCK_HBA( cpqfcHBAdata)
-
- cpqfcHBAdata->BoardLock = NULL; // Linux SCSI commands may be queued
-
- // Now, complete any Cmnd we Q'd up while BoardLock was held
-
- CompleteBoardLockCmnd( cpqfcHBAdata);
-
-
- // restart the timer to run again (1 sec later)
-Skip:
- mod_timer( &cpqfcHBAdata->cpqfcTStimer, jiffies + HZ);
-
- PCI_TRACEO( i, 0xA8)
- return;
-}
-
-
-// put valid FC-AL physical address in spec order
-static const UCHAR valid_al_pa[]={
- 0xef, 0xe8, 0xe4, 0xe2,
- 0xe1, 0xE0, 0xDC, 0xDA,
- 0xD9, 0xD6, 0xD5, 0xD4,
- 0xD3, 0xD2, 0xD1, 0xCe,
- 0xCd, 0xCc, 0xCb, 0xCa,
- 0xC9, 0xC7, 0xC6, 0xC5,
- 0xC3, 0xBc, 0xBa, 0xB9,
- 0xB6, 0xB5, 0xB4, 0xB3,
- 0xB2, 0xB1, 0xae, 0xad,
- 0xAc, 0xAb, 0xAa, 0xA9,
-
- 0xA7, 0xA6, 0xA5, 0xA3,
- 0x9f, 0x9e, 0x9d, 0x9b,
- 0x98, 0x97, 0x90, 0x8f,
- 0x88, 0x84, 0x82, 0x81,
- 0x80, 0x7c, 0x7a, 0x79,
- 0x76, 0x75, 0x74, 0x73,
- 0x72, 0x71, 0x6e, 0x6d,
- 0x6c, 0x6b, 0x6a, 0x69,
- 0x67, 0x66, 0x65, 0x63,
- 0x5c, 0x5a, 0x59, 0x56,
-
- 0x55, 0x54, 0x53, 0x52,
- 0x51, 0x4e, 0x4d, 0x4c,
- 0x4b, 0x4a, 0x49, 0x47,
- 0x46, 0x45, 0x43, 0x3c,
- 0x3a, 0x39, 0x36, 0x35,
- 0x34, 0x33, 0x32, 0x31,
- 0x2e, 0x2d, 0x2c, 0x2b,
- 0x2a, 0x29, 0x27, 0x26,
- 0x25, 0x23, 0x1f, 0x1E,
- 0x1d, 0x1b, 0x18, 0x17,
-
- 0x10, 0x0f, 8, 4, 2, 1 }; // ALPA 0 (Fabric) is special case
-
-const int number_of_al_pa = (sizeof(valid_al_pa) );
-
-
-
-// this function looks up an al_pa from the table of valid al_pa's
-// we decrement from the last decimal loop ID, because soft al_pa
-// (our typical case) are assigned with highest priority (and high al_pa)
-// first. See "In-Depth FC-AL", R. Kembel pg. 38
-// INPUTS:
-// al_pa - 24 bit port identifier (8 bit al_pa on private loop)
-// RETURN:
-// Loop ID - serves are index to array of logged in ports
-// -1 - invalid al_pa (not all 8 bit values are legal)
-
-#if (0)
-static int GetLoopID( ULONG al_pa )
-{
- int i;
-
- for( i = number_of_al_pa -1; i >= 0; i--) // dec.
- {
- if( valid_al_pa[i] == (UCHAR)al_pa ) // take lowest 8 bits
- return i; // success - found valid al_pa; return decimal LoopID
- }
- return -1; // failed - not found
-}
-#endif
-
-extern cpqfc_passthru_private_t *cpqfc_private(Scsi_Request *sr);
-
-// Search the singly (forward) linked list "fcPorts" looking for
-// either the SCSI target (if != -1), port_id (if not NULL),
-// or WWN (if not null), in that specific order.
-// If we find a SCSI nexus (from Cmnd arg), set the SCp.phase
-// field according to VSA or PDU
-// RETURNS:
-// Ptr to logged in port struct if found
-// (NULL if not found)
-// pLastLoggedInPort - ptr to last struct (for adding new ones)
-//
-PFC_LOGGEDIN_PORT fcFindLoggedInPort(
- PTACHYON fcChip,
- Scsi_Cmnd *Cmnd, // search linked list for Scsi Nexus (channel/target/lun)
- ULONG port_id, // search linked list for al_pa, or
- UCHAR wwn[8], // search linked list for WWN, or...
- PFC_LOGGEDIN_PORT *pLastLoggedInPort )
-
-{
- PFC_LOGGEDIN_PORT pLoggedInPort = &fcChip->fcPorts;
- BOOLEAN target_id_valid=FALSE;
- BOOLEAN port_id_valid=FALSE;
- BOOLEAN wwn_valid=FALSE;
- int i;
-
-
- if( Cmnd != NULL )
- target_id_valid = TRUE;
-
- else if( port_id ) // note! 24-bit NULL address is illegal
- port_id_valid = TRUE;
-
- else
- {
- if( wwn ) // non-null arg? (OK to pass NULL when not searching WWN)
- {
- for( i=0; i<8; i++) // valid WWN passed? NULL WWN invalid
- {
- if( wwn[i] != 0 )
- wwn_valid = TRUE; // any non-zero byte makes (presumably) valid
- }
- }
- }
- // check other options ...
-
-
- // In case multiple search options are given, we use a priority
- // scheme:
- // While valid pLoggedIn Ptr
- // If port_id is valid
- // if port_id matches, return Ptr
- // If wwn is valid
- // if wwn matches, return Ptr
- // Next Ptr in list
- //
- // Return NULL (not found)
-
-
- while( pLoggedInPort ) // NULL marks end of list (1st ptr always valid)
- {
- if( pLastLoggedInPort ) // caller's pointer valid?
- *pLastLoggedInPort = pLoggedInPort; // end of linked list
-
- if( target_id_valid )
- {
- // check Linux Scsi Cmnd for channel/target Nexus match
- // (all luns are accessed through matching "pLoggedInPort")
- if( (pLoggedInPort->ScsiNexus.target == Cmnd->device->id)
- &&
- (pLoggedInPort->ScsiNexus.channel == Cmnd->device->channel))
- {
- // For "passthru" modes, the IOCTL caller is responsible
- // for setting the FCP-LUN addressing
- if (Cmnd->sc_request != NULL && Cmnd->device->host != NULL &&
- Cmnd->device->host->hostdata != NULL &&
- is_private_data_of_cpqfc((CPQFCHBA *) Cmnd->device->host->hostdata,
- Cmnd->sc_request->upper_private_data)) {
- /* This is a passthru... */
- cpqfc_passthru_private_t *pd;
- pd = Cmnd->sc_request->upper_private_data;
- Cmnd->SCp.phase = pd->bus;
- // Cmnd->SCp.have_data_in = pd->pdrive;
- Cmnd->SCp.have_data_in = Cmnd->device->lun;
- } else {
- /* This is not a passthru... */
-
- // set the FCP-LUN addressing type
- Cmnd->SCp.phase = pLoggedInPort->ScsiNexus.VolumeSetAddressing;
-
- // set the Device Type we got from the snooped INQUIRY string
- Cmnd->SCp.Message = pLoggedInPort->ScsiNexus.InqDeviceType;
-
- // handle LUN masking; if not "default" (illegal) lun value,
- // the use it. These lun values are set by a successful
- // Report Luns command
- if( pLoggedInPort->ScsiNexus.LunMasking == 1)
- {
- if (Cmnd->device->lun > sizeof(pLoggedInPort->ScsiNexus.lun))
- return NULL;
- // we KNOW all the valid LUNs... 0xFF is invalid!
- Cmnd->SCp.have_data_in = pLoggedInPort->ScsiNexus.lun[Cmnd->device->lun];
- if (pLoggedInPort->ScsiNexus.lun[Cmnd->device->lun] == 0xFF)
- return NULL;
- // printk("xlating lun %d to 0x%02x\n", Cmnd->lun,
- // pLoggedInPort->ScsiNexus.lun[Cmnd->lun]);
- }
- else
- Cmnd->SCp.have_data_in = Cmnd->device->lun; // Linux & target luns match
- }
- break; // found it!
- }
- }
-
- if( port_id_valid ) // look for alpa first
- {
- if( pLoggedInPort->port_id == port_id )
- break; // found it!
- }
- if( wwn_valid ) // look for wwn second
- {
-
- if( !memcmp( &pLoggedInPort->u.ucWWN[0], &wwn[0], 8))
- {
- // all 8 bytes of WWN match
- break; // found it!
- }
- }
-
- pLoggedInPort = pLoggedInPort->pNextPort; // try next port
- }
-
- return pLoggedInPort;
-}
-
-
-
-
-//
-// We need to examine the SEST table and re-validate
-// any open Exchanges for this LoggedInPort
-// To make Tachyon pay attention, Freeze FCP assists,
-// set VAL bits, Unfreeze FCP assists
-static void RevalidateSEST( struct Scsi_Host *HostAdapter,
- PFC_LOGGEDIN_PORT pLoggedInPort)
-{
- CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- ULONG x_ID;
- BOOLEAN TachFroze = FALSE;
-
-
- // re-validate any SEST exchanges that are permitted
- // to survive the link down (e.g., good PDISC performed)
- for( x_ID = 0; x_ID < TACH_SEST_LEN; x_ID++)
- {
-
- // If the SEST entry port_id matches the pLoggedInPort,
- // we need to re-validate
- if( (Exchanges->fcExchange[ x_ID].type == SCSI_IRE)
- ||
- (Exchanges->fcExchange[ x_ID].type == SCSI_IWE))
- {
-
- if( (Exchanges->fcExchange[ x_ID].fchs.d_id & 0xFFFFFF) // (24-bit port ID)
- == pLoggedInPort->port_id)
- {
-// printk(" re-val xID %Xh ", x_ID);
- if( !TachFroze ) // freeze if not already frozen
- TachFroze |= FreezeTach( cpqfcHBAdata);
- fcChip->SEST->u[ x_ID].IWE.Hdr_Len |= 0x80000000; // set VAL bit
- }
- }
- }
-
- if( TachFroze)
- {
- fcChip->UnFreezeTachyon( fcChip, 2); // both ERQ and FCP assists
- }
-}
-
-
-// Complete an Linux Cmnds that we Queued because
-// our FC link was down (cause immediate retry)
-
-static void UnblockScsiDevice( struct Scsi_Host *HostAdapter,
- PFC_LOGGEDIN_PORT pLoggedInPort)
-{
- CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
- Scsi_Cmnd* *SCptr = &cpqfcHBAdata->LinkDnCmnd[0];
- Scsi_Cmnd *Cmnd;
- int indx;
-
-
-
- // if the device was previously "blocked", make sure
- // we unblock it so Linux SCSI will resume
-
- pLoggedInPort->device_blocked = FALSE; // clear our flag
-
- // check the Link Down command ptr buffer;
- // we can complete now causing immediate retry
- for( indx=0; indx < CPQFCTS_REQ_QUEUE_LEN; indx++, SCptr++)
- {
- if( *SCptr != NULL ) // scsi command to complete?
- {
-#ifdef DUMMYCMND_DBG
- printk("complete Cmnd %p in LinkDnCmnd[%d]\n", *SCptr,indx);
-#endif
- Cmnd = *SCptr;
-
-
- // Are there any Q'd commands for this target?
- if( (Cmnd->device->id == pLoggedInPort->ScsiNexus.target)
- &&
- (Cmnd->device->channel == pLoggedInPort->ScsiNexus.channel) )
- {
- Cmnd->result = (DID_SOFT_ERROR <<16); // force retry
- if( Cmnd->scsi_done == NULL)
- {
- printk("LinkDnCmnd scsi_done ptr null, port_id %Xh\n",
- pLoggedInPort->port_id);
- }
- else
- call_scsi_done(Cmnd);
- *SCptr = NULL; // free this slot for next use
- }
- }
- }
-}
-
-
-//#define WWN_DBG 1
-
-static void SetLoginFields(
- PFC_LOGGEDIN_PORT pLoggedInPort,
- TachFCHDR_GCMND* fchs,
- BOOLEAN PDisc,
- BOOLEAN Originator)
-{
- LOGIN_PAYLOAD logi; // FC-PH Port Login
- PRLI_REQUEST prli; // copy for BIG ENDIAN switch
- int i;
-#ifdef WWN_DBG
- ULONG ulBuff;
-#endif
-
- BigEndianSwap( (UCHAR*)&fchs->pl[0], (UCHAR*)&logi, sizeof(logi));
-
- pLoggedInPort->Originator = Originator;
- pLoggedInPort->port_id = fchs->s_id & 0xFFFFFF;
-
- switch( fchs->pl[0] & 0xffff )
- {
- case 0x00000002: // PLOGI or PDISC ACCept?
- if( PDisc ) // PDISC accept
- goto PDISC_case;
-
- case 0x00000003: // ELS_PLOGI or ELS_PLOGI_ACC
-
- // Login BB_credit typically 0 for Tachyons
- pLoggedInPort->BB_credit = logi.cmn_services.bb_credit;
-
- // e.g. 128, 256, 1024, 2048 per FC-PH spec
- // We have to use this when setting up SEST Writes,
- // since that determines frame size we send.
- pLoggedInPort->rx_data_size = logi.class3.rx_data_size;
- pLoggedInPort->plogi = TRUE;
- pLoggedInPort->pdisc = FALSE;
- pLoggedInPort->prli = FALSE; // ELS_PLOGI resets
- pLoggedInPort->flogi = FALSE; // ELS_PLOGI resets
- pLoggedInPort->logo = FALSE; // ELS_PLOGI resets
- pLoggedInPort->LOGO_counter = 0;// ELS_PLOGI resets
- pLoggedInPort->LOGO_timer = 0;// ELS_PLOGI resets
-
- // was this PLOGI to a Fabric?
- if( pLoggedInPort->port_id == 0xFFFFFC ) // well know address
- pLoggedInPort->flogi = TRUE;
-
-
- for( i=0; i<8; i++) // copy the LOGIN port's WWN
- pLoggedInPort->u.ucWWN[i] = logi.port_name[i];
-
-#ifdef WWN_DBG
- ulBuff = (ULONG)pLoggedInPort->u.liWWN;
- if( pLoggedInPort->Originator)
- printk("o");
- else
- printk("r");
- printk("PLOGI port_id %Xh, WWN %08X",
- pLoggedInPort->port_id, ulBuff);
-
- ulBuff = (ULONG)(pLoggedInPort->u.liWWN >> 32);
- printk("%08Xh fcPort %p\n", ulBuff, pLoggedInPort);
-#endif
- break;
-
-
-
-
- case 0x00000005: // ELS_LOGO (logout)
-
-
- pLoggedInPort->plogi = FALSE;
- pLoggedInPort->pdisc = FALSE;
- pLoggedInPort->prli = FALSE; // ELS_PLOGI resets
- pLoggedInPort->flogi = FALSE; // ELS_PLOGI resets
- pLoggedInPort->logo = TRUE; // ELS_PLOGI resets
- pLoggedInPort->LOGO_counter++; // ELS_PLOGI resets
- pLoggedInPort->LOGO_timer = 0;
-#ifdef WWN_DBG
- ulBuff = (ULONG)pLoggedInPort->u.liWWN;
- if( pLoggedInPort->Originator)
- printk("o");
- else
- printk("r");
- printk("LOGO port_id %Xh, WWN %08X",
- pLoggedInPort->port_id, ulBuff);
-
- ulBuff = (ULONG)(pLoggedInPort->u.liWWN >> 32);
- printk("%08Xh\n", ulBuff);
-#endif
- break;
-
-
-
-PDISC_case:
- case 0x00000050: // ELS_PDISC or ELS_PDISC_ACC
- pLoggedInPort->LOGO_timer = 0; // stop the time-out
-
- pLoggedInPort->prli = TRUE; // ready to accept FCP-SCSI I/O
-
-
-
-#ifdef WWN_DBG
- ulBuff = (ULONG)pLoggedInPort->u.liWWN;
- if( pLoggedInPort->Originator)
- printk("o");
- else
- printk("r");
- printk("PDISC port_id %Xh, WWN %08X",
- pLoggedInPort->port_id, ulBuff);
-
- ulBuff = (ULONG)(pLoggedInPort->u.liWWN >> 32);
- printk("%08Xh\n", ulBuff);
-#endif
-
-
-
- break;
-
-
-
- case 0x1020L: // PRLI?
- case 0x1002L: // PRLI ACCept?
- BigEndianSwap( (UCHAR*)&fchs->pl[0], (UCHAR*)&prli, sizeof(prli));
-
- pLoggedInPort->fcp_info = prli.fcp_info; // target/initiator flags
- pLoggedInPort->prli = TRUE; // PLOGI resets, PDISC doesn't
-
- pLoggedInPort->pdisc = TRUE; // expect to send (or receive) PDISC
- // next time
- pLoggedInPort->LOGO_timer = 0; // will be set next LinkDown
-#ifdef WWN_DBG
- ulBuff = (ULONG)pLoggedInPort->u.liWWN;
- if( pLoggedInPort->Originator)
- printk("o");
- else
- printk("r");
- printk("PRLI port_id %Xh, WWN %08X",
- pLoggedInPort->port_id, ulBuff);
-
- ulBuff = (ULONG)(pLoggedInPort->u.liWWN >> 32);
- printk("%08Xh\n", ulBuff);
-#endif
-
- break;
-
- }
-
- return;
-}
-
-
-
-
-
-
-static void BuildLinkServicePayload( PTACHYON fcChip, ULONG type, void* payload)
-{
- LOGIN_PAYLOAD *plogi; // FC-PH Port Login
- LOGIN_PAYLOAD PlogiPayload; // copy for BIG ENDIAN switch
- PRLI_REQUEST *prli; // FCP-SCSI Process Login
- PRLI_REQUEST PrliPayload; // copy for BIG ENDIAN switch
- LOGOUT_PAYLOAD *logo;
- LOGOUT_PAYLOAD LogoutPayload;
-// PRLO_REQUEST *prlo;
-// PRLO_REQUEST PrloPayload;
- REJECT_MESSAGE rjt, *prjt;
-
- memset( &PlogiPayload, 0, sizeof( PlogiPayload));
- plogi = &PlogiPayload; // load into stack buffer,
- // then BIG-ENDIAN switch a copy to caller
-
-
- switch( type ) // payload type can be ELS_PLOGI, ELS_PRLI, ADISC, ...
- {
- case ELS_FDISC:
- case ELS_FLOGI:
- case ELS_PLOGI_ACC: // FC-PH PORT Login Accept
- case ELS_PLOGI: // FC-PH PORT Login
- case ELS_PDISC: // FC-PH2 Port Discovery - same payload as ELS_PLOGI
- plogi->login_cmd = LS_PLOGI;
- if( type == ELS_PDISC)
- plogi->login_cmd = LS_PDISC;
- else if( type == ELS_PLOGI_ACC )
- plogi->login_cmd = LS_ACC;
-
- plogi->cmn_services.bb_credit = 0x00;
- plogi->cmn_services.lowest_ver = fcChip->lowest_FCPH_ver;
- plogi->cmn_services.highest_ver = fcChip->highest_FCPH_ver;
- plogi->cmn_services.bb_rx_size = TACHLITE_TS_RX_SIZE;
- plogi->cmn_services.common_features = CONTINUOSLY_INCREASING |
- RANDOM_RELATIVE_OFFSET;
-
- // fill in with World Wide Name based Port Name - 8 UCHARs
- // get from Tach registers WWN hi & lo
- LoadWWN( fcChip, plogi->port_name, 0);
- // fill in with World Wide Name based Node/Fabric Name - 8 UCHARs
- // get from Tach registers WWN hi & lo
- LoadWWN( fcChip, plogi->node_name, 1);
-
- // For Seagate Drives.
- //
- plogi->cmn_services.common_features |= 0x800;
- plogi->cmn_services.rel_offset = 0xFE;
- plogi->cmn_services.concurrent_seq = 1;
- plogi->class1.service_options = 0x00;
- plogi->class2.service_options = 0x00;
- plogi->class3.service_options = CLASS_VALID;
- plogi->class3.initiator_control = 0x00;
- plogi->class3.rx_data_size = MAX_RX_PAYLOAD;
- plogi->class3.recipient_control =
- ERROR_DISCARD | ONE_CATEGORY_SEQUENCE;
- plogi->class3.concurrent_sequences = 1;
- plogi->class3.open_sequences = 1;
- plogi->vendor_id[0] = 'C'; plogi->vendor_id[1] = 'Q';
- plogi->vendor_version[0] = 'C'; plogi->vendor_version[1] = 'Q';
- plogi->vendor_version[2] = ' '; plogi->vendor_version[3] = '0';
- plogi->vendor_version[4] = '0'; plogi->vendor_version[5] = '0';
-
-
- // FLOGI specific fields... (see FC-FLA, Rev 2.7, Aug 1999, sec 5.1)
- if( (type == ELS_FLOGI) || (type == ELS_FDISC) )
- {
- if( type == ELS_FLOGI )
- plogi->login_cmd = LS_FLOGI;
- else
- plogi->login_cmd = LS_FDISC;
-
- plogi->cmn_services.lowest_ver = 0x20;
- plogi->cmn_services.common_features = 0x0800;
- plogi->cmn_services.rel_offset = 0;
- plogi->cmn_services.concurrent_seq = 0;
-
- plogi->class3.service_options = 0x8800;
- plogi->class3.rx_data_size = 0;
- plogi->class3.recipient_control = 0;
- plogi->class3.concurrent_sequences = 0;
- plogi->class3.open_sequences = 0;
- }
-
- // copy back to caller's buff, w/ BIG ENDIAN swap
- BigEndianSwap( (UCHAR*)&PlogiPayload, payload, sizeof(PlogiPayload));
- break;
-
-
- case ELS_ACC: // generic Extended Link Service ACCept
- plogi->login_cmd = LS_ACC;
- // copy back to caller's buff, w/ BIG ENDIAN swap
- BigEndianSwap( (UCHAR*)&PlogiPayload, payload, 4);
- break;
-
-
-
- case ELS_SCR: // Fabric State Change Registration
- {
- SCR_PL scr; // state change registration
-
- memset( &scr, 0, sizeof(scr));
-
- scr.command = LS_SCR; // 0x62000000
- // see FC-FLA, Rev 2.7, Table A.22 (pg 82)
- scr.function = 3; // 1 = Events detected by Fabric
- // 2 = N_Port detected registration
- // 3 = Full registration
-
- // copy back to caller's buff, w/ BIG ENDIAN swap
- BigEndianSwap( (UCHAR*)&scr, payload, sizeof(SCR_PL));
- }
-
- break;
-
-
- case FCS_NSR: // Fabric Name Service Request
- {
- NSR_PL nsr; // Name Server Req. payload
-
- memset( &nsr, 0, sizeof(NSR_PL));
-
- // see Brocade Fabric Programming Guide,
- // Rev 1.3, pg 4-44
- nsr.CT_Rev = 0x01000000;
- nsr.FCS_Type = 0xFC020000;
- nsr.Command_code = 0x01710000;
- nsr.FCP = 8;
-
- // copy back to caller's buff, w/ BIG ENDIAN swap
- BigEndianSwap( (UCHAR*)&nsr, payload, sizeof(NSR_PL));
- }
-
- break;
-
-
-
-
- case ELS_LOGO: // FC-PH PORT LogOut
- logo = &LogoutPayload; // load into stack buffer,
- // then BIG-ENDIAN switch a copy to caller
- logo->cmd = LS_LOGO;
- // load the 3 UCHARs of the node name
- // (if private loop, upper two UCHARs 0)
- logo->reserved = 0;
-
- logo->n_port_identifier[0] = (UCHAR)(fcChip->Registers.my_al_pa);
- logo->n_port_identifier[1] =
- (UCHAR)(fcChip->Registers.my_al_pa>>8);
- logo->n_port_identifier[2] =
- (UCHAR)(fcChip->Registers.my_al_pa>>16);
- // fill in with World Wide Name based Port Name - 8 UCHARs
- // get from Tach registers WWN hi & lo
- LoadWWN( fcChip, logo->port_name, 0);
-
- BigEndianSwap( (UCHAR*)&LogoutPayload,
- payload, sizeof(LogoutPayload) ); // 16 UCHAR struct
- break;
-
-
- case ELS_LOGO_ACC: // Logout Accept (FH-PH pg 149, table 74)
- logo = &LogoutPayload; // load into stack buffer,
- // then BIG-ENDIAN switch a copy to caller
- logo->cmd = LS_ACC;
- BigEndianSwap( (UCHAR*)&LogoutPayload, payload, 4 ); // 4 UCHAR cmnd
- break;
-
-
- case ELS_RJT: // ELS_RJT link service reject (FH-PH pg 155)
-
- prjt = (REJECT_MESSAGE*)payload; // pick up passed data
- rjt.command_code = ELS_RJT;
- // reverse fields, because of Swap that follows...
- rjt.vendor = prjt->reserved; // vendor specific
- rjt.explain = prjt->reason; //
- rjt.reason = prjt->explain; //
- rjt.reserved = prjt->vendor; //
- // BIG-ENDIAN switch a copy to caller
- BigEndianSwap( (UCHAR*)&rjt, payload, 8 ); // 8 UCHAR cmnd
- break;
-
-
-
-
-
- case ELS_PRLI_ACC: // Process Login ACCept
- case ELS_PRLI: // Process Login
- case ELS_PRLO: // Process Logout
- memset( &PrliPayload, 0, sizeof( PrliPayload));
- prli = &PrliPayload; // load into stack buffer,
-
- if( type == ELS_PRLI )
- prli->cmd = 0x20; // Login
- else if( type == ELS_PRLO )
- prli->cmd = 0x21; // Logout
- else if( type == ELS_PRLI_ACC )
- {
- prli->cmd = 0x02; // Login ACCept
- prli->valid = REQUEST_EXECUTED;
- }
-
-
- prli->valid |= SCSI_FCP | ESTABLISH_PAIR;
- prli->fcp_info = READ_XFER_RDY;
- prli->page_length = 0x10;
- prli->payload_length = 20;
- // Can be initiator AND target
-
- if( fcChip->Options.initiator )
- prli->fcp_info |= INITIATOR_FUNCTION;
- if( fcChip->Options.target )
- prli->fcp_info |= TARGET_FUNCTION;
-
- BigEndianSwap( (UCHAR*)&PrliPayload, payload, prli->payload_length);
- break;
-
-
-
- default: // no can do - programming error
- printk(" BuildLinkServicePayload unknown!\n");
- break;
- }
-}
-
-// loads 8 UCHARs for PORT name or NODE name base on
-// controller's WWN.
-void LoadWWN( PTACHYON fcChip, UCHAR* dest, UCHAR type)
-{
- UCHAR* bPtr, i;
-
- switch( type )
- {
- case 0: // Port_Name
- bPtr = (UCHAR*)&fcChip->Registers.wwn_hi;
- for( i =0; i<4; i++)
- dest[i] = *bPtr++;
- bPtr = (UCHAR*)&fcChip->Registers.wwn_lo;
- for( i =4; i<8; i++)
- dest[i] = *bPtr++;
- break;
- case 1: // Node/Fabric _Name
- bPtr = (UCHAR*)&fcChip->Registers.wwn_hi;
- for( i =0; i<4; i++)
- dest[i] = *bPtr++;
- bPtr = (UCHAR*)&fcChip->Registers.wwn_lo;
- for( i =4; i<8; i++)
- dest[i] = *bPtr++;
- break;
- }
-
-}
-
-
-
-// We check the Port Login payload for required values. Note that
-// ELS_PLOGI and ELS_PDISC (Port DISCover) use the same payload.
-
-
-int verify_PLOGI( PTACHYON fcChip,
- TachFCHDR_GCMND* fchs,
- ULONG* reject_explain)
-{
- LOGIN_PAYLOAD login;
-
- // source, dest, len (should be mult. of 4)
- BigEndianSwap( (UCHAR*)&fchs->pl[0], (UCHAR*)&login, sizeof(login));
-
- // check FC version
- // if other port's highest supported version
- // is less than our lowest, and
- // if other port's lowest
- if( login.cmn_services.highest_ver < fcChip->lowest_FCPH_ver ||
- login.cmn_services.lowest_ver > fcChip->highest_FCPH_ver )
- {
- *reject_explain = LS_RJT_REASON( LOGICAL_ERROR, OPTIONS_ERROR);
- return LOGICAL_ERROR;
- }
-
- // Receive Data Field Size must be >=128
- // per FC-PH
- if (login.cmn_services.bb_rx_size < 128)
- {
- *reject_explain = LS_RJT_REASON( LOGICAL_ERROR, DATA_FIELD_SIZE_ERROR);
- return LOGICAL_ERROR;
- }
-
- // Only check Class 3 params
- if( login.class3.service_options & CLASS_VALID)
- {
- if (login.class3.rx_data_size < 128)
- {
- *reject_explain = LS_RJT_REASON( LOGICAL_ERROR, INVALID_CSP);
- return LOGICAL_ERROR;
- }
- if( login.class3.initiator_control & XID_REQUIRED)
- {
- *reject_explain = LS_RJT_REASON( LOGICAL_ERROR, INITIATOR_CTL_ERROR);
- return LOGICAL_ERROR;
- }
- }
- return 0; // success
-}
-
-
-
-
-int verify_PRLI( TachFCHDR_GCMND* fchs, ULONG* reject_explain)
-{
- PRLI_REQUEST prli; // buffer for BIG ENDIAN
-
- // source, dest, len (should be mult. of 4)
- BigEndianSwap( (UCHAR*)&fchs->pl[0], (UCHAR*)&prli, sizeof(prli));
-
- if( prli.fcp_info == 0 ) // i.e., not target or initiator?
- {
- *reject_explain = LS_RJT_REASON( LOGICAL_ERROR, OPTIONS_ERROR);
- return LOGICAL_ERROR;
- }
-
- return 0; // success
-}
-
-
-// SWAP UCHARs as required by Fibre Channel (i.e. BIG ENDIAN)
-// INPUTS:
-// source - ptr to LITTLE ENDIAN ULONGS
-// cnt - number of UCHARs to switch (should be mult. of ULONG)
-// OUTPUTS:
-// dest - ptr to BIG ENDIAN copy
-// RETURN:
-// none
-//
-void BigEndianSwap( UCHAR *source, UCHAR *dest, USHORT cnt)
-{
- int i,j;
-
- source+=3; // start at MSB of 1st ULONG
- for( j=0; j < cnt; j+=4, source+=4, dest+=4) // every ULONG
- {
- for( i=0; i<4; i++) // every UCHAR in ULONG
- *(dest+i) = *(source-i);
- }
-}
-
-
-
-
-// Build FC Exchanges............
-
-static void buildFCPstatus(
- PTACHYON fcChip,
- ULONG ExchangeID);
-
-static LONG FindFreeExchange( PTACHYON fcChip, ULONG type );
-
-static ULONG build_SEST_sgList(
- struct pci_dev *pcidev,
- ULONG *SESTalPairStart,
- Scsi_Cmnd *Cmnd,
- ULONG *sgPairs,
- PSGPAGES *sgPages_head // link list of TL Ext. S/G pages from O/S Pool
-);
-
-static int build_FCP_payload( Scsi_Cmnd *Cmnd,
- UCHAR* payload, ULONG type, ULONG fcp_dl );
-
-
-/*
- IRB
- ERQ __________________
- | | / | Req_A_SFS_Len | ____________________
- |----------| / | Req_A_SFS_Addr |------->| Reserved |
- | IRB | / | Req_A_D_ID | | SOF EOF TimeStamp |
- |-----------/ | Req_A_SEST_Index |-+ | R_CTL | D_ID |
- | IRB | | Req_B... | | | CS_CTL| S_ID |
- |-----------\ | | | | TYPE | F_CTL |
- | IRB | \ | | | | SEQ_ID | SEQ_CNT |
- |----------- \ | | +-->+--| OX_ID | RX_ID |
- | | \ |__________________| | | RO |
- | | pl (payload/cmnd) |
- | | ..... |
- | |___________________|
- |
- |
-+-------------------------------------------+
-|
-|
-| e.g. IWE
-| SEST __________________ for FCP_DATA
-| | | / | | Hdr_Len | ____________________
-| |----------| / | Hdr_Addr_Addr |------->| Reserved |
-| | [0] | / |Remote_ID| RSP_Len| | SOF EOF TimeStamp |
-| |-----------/ | RSP_Addr |---+ | R_CTL | D_ID |
-+-> [1] | | | Buff_Off | | | CS_CTL| S_ID |
- |-----------\ |BuffIndex| Link | | | TYPE | F_CTL |
- | [2] | \ | Rsvd | RX_ID | | | SEQ_ID | SEQ_CNT |
- |----------- \ | Data_Len | | | OX_ID | RX_ID |
- | ... | \ | Exp_RO | | | RO |
- |----------| | Exp_Byte_Cnt | | |___________________|
- | SEST_LEN | +--| Len | |
- |__________| | | Address | |
- | | ... | | for FCP_RSP
- | |__________________| | ____________________
- | +----| Reserved |
- | | SOF EOF TimeStamp |
- | | R_CTL | D_ID |
- | | CS_CTL| S_ID |
- +--- local or extended | .... |
- scatter/gather lists
- defining upper-layer
- data (e.g. from user's App)
-
-
-*/
-// All TachLite commands must start with a SFS (Single Frame Sequence)
-// command. In the simplest case (a NOP Basic Link command),
-// only one frame header and ERQ entry is required. The most complex
-// case is the SCSI assisted command, which requires an ERQ entry,
-// SEST entry, and several frame headers and data buffers all
-// logically linked together.
-// Inputs:
-// cpqfcHBAdata - controller struct
-// type - PLOGI, SCSI_IWE, etc.
-// InFCHS - Incoming Tachlite FCHS which prompted this exchange
-// (only s_id set if we are originating)
-// Data - PVOID to data struct consistent with "type"
-// fcExchangeIndex - pointer to OX/RD ID value of built exchange
-// Return:
-// fcExchangeIndex - OX/RD ID value if successful
-// 0 - success
-// INVALID_ARGS - NULL/ invalid passed args
-// BAD_ALPA - Bad source al_pa address
-// LNKDWN_OSLS - Link Down (according to this controller)
-// OUTQUE_FULL - Outbound Que full
-// DRIVERQ_FULL - controller's Exchange array full
-// SEST_FULL - SEST table full
-//
-// Remarks:
-// Psuedo code:
-// Check for NULL pointers / bad args
-// Build outgoing FCHS - the header/payload struct
-// Build IRB (for ERQ entry)
-// if SCSI command, build SEST entry (e.g. IWE, TRE,...)
-// return success
-
-//sbuildex
-ULONG cpqfcTSBuildExchange(
- CPQFCHBA *cpqfcHBAdata,
- ULONG type, // e.g. PLOGI
- TachFCHDR_GCMND* InFCHS, // incoming FCHS
- void *Data, // the CDB, scatter/gather, etc.
- LONG *fcExchangeIndex ) // points to allocated exchange,
-{
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- ULONG ulStatus = 0; // assume OK
- USHORT ox_ID, rx_ID=0xFFFF;
- ULONG SfsLen=0L;
- TachLiteIRB* pIRB;
- IRBflags IRB_flags;
- UCHAR *pIRB_flags = (UCHAR*)&IRB_flags;
- TachFCHDR_GCMND* CMDfchs;
- TachFCHDR* dataHDR; // 32 byte HEADER ONLY FCP-DATA buffer
- TachFCHDR_RSP* rspHDR; // 32 byte header + RSP payload
- Scsi_Cmnd *Cmnd = (Scsi_Cmnd*)Data; // Linux Scsi CDB, S/G, ...
- TachLiteIWE* pIWE;
- TachLiteIRE* pIRE;
- TachLiteTWE* pTWE;
- TachLiteTRE* pTRE;
- ULONG fcp_dl; // total byte length of DATA transferred
- ULONG fl; // frame length (FC frame size, 128, 256, 512, 1024)
- ULONG sgPairs; // number of valid scatter/gather pairs
- int FCP_SCSI_command;
- BA_ACC_PAYLOAD *ba_acc;
- BA_RJT_PAYLOAD *ba_rjt;
-
- // check passed ARGS
- if( !fcChip->ERQ ) // NULL ptr means uninitialized Tachlite chip
- return INVALID_ARGS;
-
-
- if( type == SCSI_IRE ||
- type == SCSI_TRE ||
- type == SCSI_IWE ||
- type == SCSI_TWE)
- FCP_SCSI_command = 1;
-
- else
- FCP_SCSI_command = 0;
-
-
- // for commands that pass payload data (e.g. SCSI write)
- // examine command struct - verify that the
- // length of s/g buffers is adequate for total payload
- // length (end of list is NULL address)
-
- if( FCP_SCSI_command )
- {
- if( Data ) // must have data descriptor (S/G list -- at least
- // one address with at least 1 byte of data)
- {
- // something to do (later)?
- }
-
- else
- return INVALID_ARGS; // invalid DATA ptr
- }
-
-
-
- // we can build an Exchange for later Queuing (on the TL chip)
- // if an empty slot is available in the DevExt for this controller
- // look for available Exchange slot...
-
- if( type != FCP_RESPONSE &&
- type != BLS_ABTS &&
- type != BLS_ABTS_ACC ) // already have Exchange slot!
- *fcExchangeIndex = FindFreeExchange( fcChip, type );
-
- if( *fcExchangeIndex != -1 ) // Exchange is available?
- {
- // assign tmp ptr (shorthand)
- CMDfchs = &Exchanges->fcExchange[ *fcExchangeIndex].fchs;
-
- if( Cmnd != NULL ) // (necessary for ABTS cases)
- {
- Exchanges->fcExchange[ *fcExchangeIndex].Cmnd = Cmnd; // Linux Scsi
- Exchanges->fcExchange[ *fcExchangeIndex].pLoggedInPort =
- fcFindLoggedInPort( fcChip,
- Exchanges->fcExchange[ *fcExchangeIndex].Cmnd, // find Scsi Nexus
- 0, // DON'T search linked list for FC port id
- NULL, // DON'T search linked list for FC WWN
- NULL); // DON'T care about end of list
-
- }
-
-
- // Build the command frame header (& data) according
- // to command type
-
- // fields common for all SFS frame types
- CMDfchs->reserved = 0L; // must clear
- CMDfchs->sof_eof = 0x75000000L; // SOFi3:EOFn no UAM; LCr=0, no TS
-
- // get the destination port_id from incoming FCHS
- // (initialized before calling if we're Originator)
- // Frame goes to port it was from - the source_id
-
- CMDfchs->d_id = InFCHS->s_id &0xFFFFFF; // destination (add R_CTL later)
- CMDfchs->s_id = fcChip->Registers.my_al_pa; // CS_CTL = 0
-
-
- // now enter command-specific fields
- switch( type )
- {
-
- case BLS_NOP: // FC defined basic link service command NO-OP
- // ensure unique X_IDs! (use tracking function)
-
- *pIRB_flags = 0; // clear IRB flags
- IRB_flags.SFA = 1; // send SFS (not SEST index)
- SfsLen = *pIRB_flags;
-
- SfsLen <<= 24; // shift flags to MSB
- SfsLen += 32L; // add len to LSB (header only - no payload)
-
- // TYPE[31-24] 00 Basic Link Service
- // f_ctl[23:0] exchg originator, 1st seq, xfer S.I.
- CMDfchs->d_id |= 0x80000000L; // R_CTL = 80 for NOP (Basic Link Ser.)
- CMDfchs->f_ctl = 0x00310000L; // xchng originator, 1st seq,....
- CMDfchs->seq_cnt = 0x0L;
- CMDfchs->ox_rx_id = 0xFFFF; // RX_ID for now; OX_ID on start
- CMDfchs->ro = 0x0L; // relative offset (n/a)
- CMDfchs->pl[0] = 0xaabbccddL; // words 8-15 frame data payload (n/a)
- Exchanges->fcExchange[ *fcExchangeIndex].timeOut = 1; // seconds
- // (NOP should complete ~instantly)
- break;
-
-
-
-
- case BLS_ABTS_ACC: // Abort Sequence ACCept
- *pIRB_flags = 0; // clear IRB flags
- IRB_flags.SFA = 1; // send SFS (not SEST index)
- SfsLen = *pIRB_flags;
-
- SfsLen <<= 24; // shift flags to MSB
- SfsLen += 32 + 12; // add len to LSB (header + 3 DWORD payload)
-
- CMDfchs->d_id |= 0x84000000L; // R_CTL = 84 for BASIC ACCept
- // TYPE[31-24] 00 Basic Link Service
- // f_ctl[23:0] exchg originator, not 1st seq, xfer S.I.
- CMDfchs->f_ctl = 0x00910000L; // xchnge responder, last seq, xfer SI
- // CMDfchs->seq_id & count might be set from DataHdr?
- CMDfchs->ro = 0x0L; // relative offset (n/a)
- Exchanges->fcExchange[ *fcExchangeIndex].timeOut = 5; // seconds
- // (Timeout in case of weird error)
-
- // now set the ACCept payload...
- ba_acc = (BA_ACC_PAYLOAD*)&CMDfchs->pl[0];
- memset( ba_acc, 0, sizeof( BA_ACC_PAYLOAD));
- // Since PLDA requires (only) entire Exchange aborts, we don't need
- // to worry about what the last sequence was.
-
- // We expect that a "target" task is accepting the abort, so we
- // can use the OX/RX ID pair
- ba_acc->ox_rx_id = CMDfchs->ox_rx_id;
-
- // source, dest, #bytes
- BigEndianSwap((UCHAR *)&CMDfchs->ox_rx_id, (UCHAR *)&ba_acc->ox_rx_id, 4);
-
- ba_acc->low_seq_cnt = 0;
- ba_acc->high_seq_cnt = 0xFFFF;
-
-
- break;
-
-
- case BLS_ABTS_RJT: // Abort Sequence ACCept
- *pIRB_flags = 0; // clear IRB flags
- IRB_flags.SFA = 1; // send SFS (not SEST index)
- SfsLen = *pIRB_flags;
-
- SfsLen <<= 24; // shift flags to MSB
- SfsLen += 32 + 12; // add len to LSB (header + 3 DWORD payload)
-
- CMDfchs->d_id |= 0x85000000L; // R_CTL = 85 for BASIC ReJecT
- // f_ctl[23:0] exchg originator, not 1st seq, xfer S.I.
- // TYPE[31-24] 00 Basic Link Service
- CMDfchs->f_ctl = 0x00910000L; // xchnge responder, last seq, xfer SI
- // CMDfchs->seq_id & count might be set from DataHdr?
- CMDfchs->ro = 0x0L; // relative offset (n/a)
- Exchanges->fcExchange[ *fcExchangeIndex].timeOut = 5; // seconds
- // (Timeout in case of weird error)
-
- CMDfchs->ox_rx_id = InFCHS->ox_rx_id; // copy from sender!
-
- // now set the ReJecT payload...
- ba_rjt = (BA_RJT_PAYLOAD*)&CMDfchs->pl[0];
- memset( ba_rjt, 0, sizeof( BA_RJT_PAYLOAD));
-
- // We expect that a "target" task couldn't find the Exhange in the
- // array of active exchanges, so we use a new LinkService X_ID.
- // See Reject payload description in FC-PH (Rev 4.3), pg. 140
- ba_rjt->reason_code = 0x09; // "unable to perform command request"
- ba_rjt->reason_explain = 0x03; // invalid OX/RX ID pair
-
-
- break;
-
-
- case BLS_ABTS: // FC defined basic link service command ABTS
- // Abort Sequence
-
-
- *pIRB_flags = 0; // clear IRB flags
- IRB_flags.SFA = 1; // send SFS (not SEST index)
- SfsLen = *pIRB_flags;
-
- SfsLen <<= 24; // shift flags to MSB
- SfsLen += 32L; // add len to LSB (header only - no payload)
-
- // TYPE[31-24] 00 Basic Link Service
- // f_ctl[23:0] exchg originator, not 1st seq, xfer S.I.
- CMDfchs->d_id |= 0x81000000L; // R_CTL = 81 for ABTS
- CMDfchs->f_ctl = 0x00110000L; // xchnge originator, last seq, xfer SI
- // CMDfchs->seq_id & count might be set from DataHdr?
- CMDfchs->ro = 0x0L; // relative offset (n/a)
- Exchanges->fcExchange[ *fcExchangeIndex].timeOut = 2; // seconds
- // (ABTS must timeout when responder is gone)
- break;
-
-
-
- case FCS_NSR: // Fabric Name Service Request
- Exchanges->fcExchange[ *fcExchangeIndex].reTries = 2;
-
-
- Exchanges->fcExchange[ *fcExchangeIndex].timeOut = 2; // seconds
- // OX_ID, linked to Driver Transaction ID
- // (fix-up at Queing time)
- CMDfchs->ox_rx_id = 0xFFFF; // RX_ID - Responder (target) to modify
- // OX_ID set at ERQueing time
- *pIRB_flags = 0; // clear IRB flags
- IRB_flags.SFA = 1; // send SFS (not SEST index)
- SfsLen = *pIRB_flags;
-
- SfsLen <<= 24; // shift flags to MSB
- SfsLen += (32L + sizeof(NSR_PL)); // add len (header & NSR payload)
-
- CMDfchs->d_id |= 0x02000000L; // R_CTL = 02 for -
- // Name Service Request: Unsolicited
- // TYPE[31-24] 01 Extended Link Service
- // f_ctl[23:0] exchg originator, 1st seq, xfer S.I.
- CMDfchs->f_ctl = 0x20210000L;
- // OX_ID will be fixed-up at Tachyon enqueing time
- CMDfchs->seq_cnt = 0; // seq ID, DF_ctl, seq cnt
- CMDfchs->ro = 0x0L; // relative offset (n/a)
-
- BuildLinkServicePayload( fcChip, type, &CMDfchs->pl[0]);
-
-
-
-
-
-
- break;
-
-
-
-
- case ELS_PLOGI: // FC-PH extended link service command Port Login
- // (May, 2000)
- // NOTE! This special case facilitates SANMark testing. The SANMark
- // test script for initialization-timeout.fcal.SANMark-1.fc
- // "eats" the OPN() primitive without issuing an R_RDY, causing
- // Tachyon to report LST (loop state timeout), which causes a
- // LIP. To avoid this, simply send out the frame (i.e. assuming a
- // buffer credit of 1) without waiting for R_RDY. Many FC devices
- // (other than Tachyon) have been doing this for years. We don't
- // ever want to do this for non-Link Service frames unless the
- // other device really did report non-zero login BB credit (i.e.
- // in the PLOGI ACCept frame).
-// CMDfchs->sof_eof |= 0x00000400L; // LCr=1
-
- case ELS_FDISC: // Fabric Discovery (Login)
- case ELS_FLOGI: // Fabric Login
- case ELS_SCR: // Fabric State Change Registration
- case ELS_LOGO: // FC-PH extended link service command Port Logout
- case ELS_PDISC: // FC-PH extended link service cmnd Port Discovery
- case ELS_PRLI: // FC-PH extended link service cmnd Process Login
-
- Exchanges->fcExchange[ *fcExchangeIndex].reTries = 2;
-
-
- Exchanges->fcExchange[ *fcExchangeIndex].timeOut = 2; // seconds
- // OX_ID, linked to Driver Transaction ID
- // (fix-up at Queing time)
- CMDfchs->ox_rx_id = 0xFFFF; // RX_ID - Responder (target) to modify
- // OX_ID set at ERQueing time
- *pIRB_flags = 0; // clear IRB flags
- IRB_flags.SFA = 1; // send SFS (not SEST index)
- SfsLen = *pIRB_flags;
-
- SfsLen <<= 24; // shift flags to MSB
- if( type == ELS_LOGO )
- SfsLen += (32L + 16L); // add len (header & PLOGI payload)
- else if( type == ELS_PRLI )
- SfsLen += (32L + 20L); // add len (header & PRLI payload)
- else if( type == ELS_SCR )
- SfsLen += (32L + sizeof(SCR_PL)); // add len (header & SCR payload)
- else
- SfsLen += (32L + 116L); // add len (header & PLOGI payload)
-
- CMDfchs->d_id |= 0x22000000L; // R_CTL = 22 for -
- // Extended Link_Data: Unsolicited Control
- // TYPE[31-24] 01 Extended Link Service
- // f_ctl[23:0] exchg originator, 1st seq, xfer S.I.
- CMDfchs->f_ctl = 0x01210000L;
- // OX_ID will be fixed-up at Tachyon enqueing time
- CMDfchs->seq_cnt = 0; // seq ID, DF_ctl, seq cnt
- CMDfchs->ro = 0x0L; // relative offset (n/a)
-
- BuildLinkServicePayload( fcChip, type, &CMDfchs->pl[0]);
-
- break;
-
-
-
- case ELS_LOGO_ACC: // FC-PH extended link service logout accept
- case ELS_RJT: // extended link service reject (add reason)
- case ELS_ACC: // ext. link service generic accept
- case ELS_PLOGI_ACC:// ext. link service login accept (PLOGI or PDISC)
- case ELS_PRLI_ACC: // ext. link service process login accept
-
-
- Exchanges->fcExchange[ *fcExchangeIndex].timeOut = 1; // assume done
- // ensure unique X_IDs! (use tracking function)
- // OX_ID from initiator cmd
- ox_ID = (USHORT)(InFCHS->ox_rx_id >> 16);
- rx_ID = 0xFFFF; // RX_ID, linked to Driver Exchange ID
-
- *pIRB_flags = 0; // clear IRB flags
- IRB_flags.SFA = 1; // send SFS (not SEST index)
- SfsLen = *pIRB_flags;
-
- SfsLen <<= 24; // shift flags to MSB
- if( type == ELS_RJT )
- {
- SfsLen += (32L + 8L); // add len (header + payload)
-
- // ELS_RJT reason codes (utilize unused "reserved" field)
- CMDfchs->pl[0] = 1;
- CMDfchs->pl[1] = InFCHS->reserved;
-
- }
- else if( (type == ELS_LOGO_ACC) || (type == ELS_ACC) )
- SfsLen += (32L + 4L); // add len (header + payload)
- else if( type == ELS_PLOGI_ACC )
- SfsLen += (32L + 116L); // add len (header + payload)
- else if( type == ELS_PRLI_ACC )
- SfsLen += (32L + 20L); // add len (header + payload)
-
- CMDfchs->d_id |= 0x23000000L; // R_CTL = 23 for -
- // Extended Link_Data: Control Reply
- // TYPE[31-24] 01 Extended Link Service
- // f_ctl[23:0] exchg responder, last seq, e_s, tsi
- CMDfchs->f_ctl = 0x01990000L;
- CMDfchs->seq_cnt = 0x0L;
- CMDfchs->ox_rx_id = 0L; // clear
- CMDfchs->ox_rx_id = ox_ID; // load upper 16 bits
- CMDfchs->ox_rx_id <<= 16; // shift them
-
- CMDfchs->ro = 0x0L; // relative offset (n/a)
-
- BuildLinkServicePayload( fcChip, type, &CMDfchs->pl[0]);
-
- break;
-
-
- // Fibre Channel SCSI 'originator' sequences...
- // (originator means 'initiator' in FCP-SCSI)
-
- case SCSI_IWE: // TachLite Initiator Write Entry
- {
- PFC_LOGGEDIN_PORT pLoggedInPort =
- Exchanges->fcExchange[ *fcExchangeIndex].pLoggedInPort;
-
- Exchanges->fcExchange[ *fcExchangeIndex].reTries = 1;
- Exchanges->fcExchange[ *fcExchangeIndex].timeOut = 7; // FC2 timeout
-
- // first, build FCP_CMND
- // unique X_ID fix-ups in StartExchange
-
- *pIRB_flags = 0; // clear IRB flags
- IRB_flags.SFA = 1; // send SFS FCP-CMND (not SEST index)
-
- // NOTE: unlike FC LinkService login frames, normal
- // SCSI commands are sent without outgoing verification
- IRB_flags.DCM = 1; // Disable completion message for Cmnd frame
- SfsLen = *pIRB_flags;
-
- SfsLen <<= 24; // shift flags to MSB
- SfsLen += 64L; // add len to LSB (header & CMND payload)
-
- CMDfchs->d_id |= (0x06000000L); // R_CTL = 6 for command
-
- // TYPE[31-24] 8 for FCP SCSI
- // f_ctl[23:0] exchg originator, 1st seq, xfer S.I.
- // valid RO
- CMDfchs->f_ctl = 0x08210008L;
- CMDfchs->seq_cnt = 0x0L;
- CMDfchs->ox_rx_id = 0L; // clear for now (-or- in later)
- CMDfchs->ro = 0x0L; // relative offset (n/a)
-
- // now, fill out FCP-DATA header
- // (use buffer inside SEST object)
- dataHDR = &fcChip->SEST->DataHDR[ *fcExchangeIndex ];
- dataHDR->reserved = 0L; // must clear
- dataHDR->sof_eof = 0x75002000L; // SOFi3:EOFn no UAM; no CLS, noLCr, no TS
- dataHDR->d_id = (InFCHS->s_id | 0x01000000L); // R_CTL= FCP_DATA
- dataHDR->s_id = fcChip->Registers.my_al_pa; // CS_CTL = 0
- // TYPE[31-24] 8 for FCP SCSI
- // f_ctl[23:0] xfer S.I.| valid RO
- dataHDR->f_ctl = 0x08010008L;
- dataHDR->seq_cnt = 0x02000000L; // sequence ID: df_ctl : seqence count
- dataHDR->ox_rx_id = 0L; // clear; fix-up dataHDR fields later
- dataHDR->ro = 0x0L; // relative offset (n/a)
-
- // Now setup the SEST entry
- pIWE = &fcChip->SEST->u[ *fcExchangeIndex ].IWE;
-
- // fill out the IWE:
-
- // VALid entry:Dir outbound:DCM:enable CM:enal INT: FC frame len
- pIWE->Hdr_Len = 0x8e000020L; // data frame Len always 32 bytes
-
-
- // from login parameters with other port, what's the largest frame
- // we can send?
- if( pLoggedInPort == NULL)
- {
- ulStatus = INVALID_ARGS; // failed! give up
- break;
- }
- if( pLoggedInPort->rx_data_size >= 2048)
- fl = 0x00020000; // 2048 code (only support 1024!)
- else if( pLoggedInPort->rx_data_size >= 1024)
- fl = 0x00020000; // 1024 code
- else if( pLoggedInPort->rx_data_size >= 512)
- fl = 0x00010000; // 512 code
- else
- fl = 0; // 128 bytes -- should never happen
-
-
- pIWE->Hdr_Len |= fl; // add xmit FC frame len for data phase
- pIWE->Hdr_Addr = fcChip->SEST->base +
- ((unsigned long)&fcChip->SEST->DataHDR[*fcExchangeIndex] -
- (unsigned long)fcChip->SEST);
-
- pIWE->RSP_Len = sizeof(TachFCHDR_RSP) ; // hdr+data (recv'd RSP frame)
- pIWE->RSP_Len |= (InFCHS->s_id << 8); // MS 24 bits Remote_ID
-
- memset( &fcChip->SEST->RspHDR[ *fcExchangeIndex].pl, 0,
- sizeof( FCP_STATUS_RESPONSE) ); // clear out previous status
-
- pIWE->RSP_Addr = fcChip->SEST->base +
- ((unsigned long)&fcChip->SEST->RspHDR[*fcExchangeIndex] -
- (unsigned long)fcChip->SEST);
-
- // Do we need local or extended gather list?
- // depends on size - we can handle 3 len/addr pairs
- // locally.
-
- fcp_dl = build_SEST_sgList(
- cpqfcHBAdata->PciDev,
- &pIWE->GLen1,
- Cmnd, // S/G list
- &sgPairs, // return # of pairs in S/G list (from "Data" descriptor)
- &fcChip->SEST->sgPages[ *fcExchangeIndex ]);// (for Freeing later)
-
- if( !fcp_dl ) // error building S/G list?
- {
- ulStatus = MEMPOOL_FAIL;
- break; // give up
- }
-
- // Now that we know total data length in
- // the passed S/G buffer, set FCP CMND frame
- build_FCP_payload( Cmnd, (UCHAR*)&CMDfchs->pl[0], type, fcp_dl );
-
-
-
- if( sgPairs > 3 ) // need extended s/g list
- pIWE->Buff_Off = 0x78000000L; // extended data | (no offset)
- else // local data pointers (in SEST)
- pIWE->Buff_Off = 0xf8000000L; // local data | (no offset)
-
- // ULONG 5
- pIWE->Link = 0x0000ffffL; // Buff_Index | Link
-
- pIWE->RX_ID = 0x0L; // DWord 6: RX_ID set by target XFER_RDY
-
- // DWord 7
- pIWE->Data_Len = 0L; // TL enters rcv'd XFER_RDY BURST_LEN
- pIWE->Exp_RO = 0L; // DWord 8
- // DWord 9
- pIWE->Exp_Byte_Cnt = fcp_dl; // sum of gather buffers
- }
- break;
-
-
-
-
-
- case SCSI_IRE: // TachLite Initiator Read Entry
-
- if( Cmnd->timeout != 0)
- {
-// printk("Cmnd->timeout %d\n", Cmnd->timeout);
- // per Linux Scsi
- Exchanges->fcExchange[ *fcExchangeIndex].timeOut = Cmnd->timeout;
- }
- else // use our best guess, based on FC & device
- {
-
- if( Cmnd->SCp.Message == 1 ) // Tape device? (from INQUIRY)
- {
- // turn off our timeouts (for now...)
- Exchanges->fcExchange[ *fcExchangeIndex].timeOut = 0xFFFFFFFF;
- }
- else
- {
- Exchanges->fcExchange[ *fcExchangeIndex].reTries = 1;
- Exchanges->fcExchange[ *fcExchangeIndex].timeOut = 7; // per SCSI req.
- }
- }
-
-
- // first, build FCP_CMND
-
-
- *pIRB_flags = 0; // clear IRB flags
- IRB_flags.SFA = 1; // send SFS FCP-CMND (not SEST index)
- // NOTE: unlike FC LinkService login frames,
- // normal SCSI commands are sent "open loop"
- IRB_flags.DCM = 1; // Disable completion message for Cmnd frame
- SfsLen = *pIRB_flags;
-
- SfsLen <<= 24; // shift flags to MSB
- SfsLen += 64L; // add len to LSB (header & CMND payload)
-
- CMDfchs->d_id |= (0x06000000L); // R_CTL = 6 for command
-
- // TYPE[31-24] 8 for FCP SCSI
- // f_ctl[23:0] exchg originator, 1st seq, xfer S.I.
- // valid RO
- CMDfchs->f_ctl = 0x08210008L;
- CMDfchs->seq_cnt = 0x0L;
- // x_ID & data direction bit set later
- CMDfchs->ox_rx_id = 0xFFFF; // clear
- CMDfchs->ro = 0x0L; // relative offset (n/a)
-
-
-
- // Now setup the SEST entry
- pIRE = &fcChip->SEST->u[ *fcExchangeIndex ].IRE;
-
- // fill out the IRE:
- // VALid entry:Dir outbound:enable CM:enal INT:
- pIRE->Seq_Accum = 0xCE000000L; // VAL,DIR inbound,DCM| INI,DAT,RSP
-
- pIRE->reserved = 0L;
- pIRE->RSP_Len = sizeof(TachFCHDR_RSP) ; // hdr+data (recv'd RSP frame)
- pIRE->RSP_Len |= (InFCHS->s_id << 8); // MS 24 bits Remote_ID
-
- pIRE->RSP_Addr = fcChip->SEST->base +
- ((unsigned long)&fcChip->SEST->RspHDR[*fcExchangeIndex] -
- (unsigned long)fcChip->SEST);
-
- // Do we need local or extended gather list?
- // depends on size - we can handle 3 len/addr pairs
- // locally.
-
- fcp_dl = build_SEST_sgList(
- cpqfcHBAdata->PciDev,
- &pIRE->SLen1,
- Cmnd, // SCSI command Data desc. with S/G list
- &sgPairs, // return # of pairs in S/G list (from "Data" descriptor)
- &fcChip->SEST->sgPages[ *fcExchangeIndex ]);// (for Freeing later)
-
-
- if( !fcp_dl ) // error building S/G list?
- {
- // It is permissible to have a ZERO LENGTH Read command.
- // If there is the case, simply set fcp_dl (and Exp_Byte_Cnt)
- // to 0 and continue.
- if( Cmnd->request_bufflen == 0 )
- {
- fcp_dl = 0; // no FC DATA frames expected
-
- }
- else
- {
- ulStatus = MEMPOOL_FAIL;
- break; // give up
- }
- }
-
- // now that we know the S/G length, build CMND payload
- build_FCP_payload( Cmnd, (UCHAR*)&CMDfchs->pl[0], type, fcp_dl );
-
-
- if( sgPairs > 3 ) // need extended s/g list
- pIRE->Buff_Off = 0x00000000; // DWord 4: extended s/g list, no offset
- else
- pIRE->Buff_Off = 0x80000000; // local data, no offset
-
- pIRE->Buff_Index = 0x0L; // DWord 5: Buff_Index | Reserved
-
- pIRE->Exp_RO = 0x0L; // DWord 6: Expected Rel. Offset
-
- pIRE->Byte_Count = 0; // DWord 7: filled in by TL on err
- pIRE->reserved_ = 0; // DWord 8: reserved
- // NOTE: 0 length READ is OK.
- pIRE->Exp_Byte_Cnt = fcp_dl;// DWord 9: sum of scatter buffers
-
- break;
-
-
-
-
- // Fibre Channel SCSI 'responder' sequences...
- // (originator means 'target' in FCP-SCSI)
- case SCSI_TWE: // TachLite Target Write Entry
-
- Exchanges->fcExchange[ *fcExchangeIndex].timeOut = 10; // per SCSI req.
-
- // first, build FCP_CMND
-
- *pIRB_flags = 0; // clear IRB flags
- IRB_flags.SFA = 1; // send SFS (XFER_RDY)
- SfsLen = *pIRB_flags;
-
- SfsLen <<= 24; // shift flags to MSB
- SfsLen += (32L + 12L);// add SFS len (header & XFER_RDY payload)
-
- CMDfchs->d_id |= (0x05000000L); // R_CTL = 5 for XFER_RDY
-
- // TYPE[31-24] 8 for FCP SCSI
- // f_ctl[23:0] exchg responder, 1st seq, xfer S.I.
- // valid RO
- CMDfchs->f_ctl = 0x08810008L;
- CMDfchs->seq_cnt = 0x01000000; // sequence ID: df_ctl: sequence count
- // use originator (other port's) OX_ID
- CMDfchs->ox_rx_id = InFCHS->ox_rx_id; // we want upper 16 bits
- CMDfchs->ro = 0x0L; // relative offset (n/a)
-
- // now, fill out FCP-RSP header
- // (use buffer inside SEST object)
-
- rspHDR = &fcChip->SEST->RspHDR[ *fcExchangeIndex ];
- rspHDR->reserved = 0L; // must clear
- rspHDR->sof_eof = 0x75000000L; // SOFi3:EOFn no UAM; no CLS, noLCr, no TS
- rspHDR->d_id = (InFCHS->s_id | 0x07000000L); // R_CTL= FCP_RSP
- rspHDR->s_id = fcChip->Registers.my_al_pa; // CS_CTL = 0
- // TYPE[31-24] 8 for FCP SCSI
- // f_ctl[23:0] responder|last seq| xfer S.I.
- rspHDR->f_ctl = 0x08910000L;
- rspHDR->seq_cnt = 0x03000000; // sequence ID
- rspHDR->ox_rx_id = InFCHS->ox_rx_id; // gives us OX_ID
- rspHDR->ro = 0x0L; // relative offset (n/a)
-
-
- // Now setup the SEST entry
-
- pTWE = &fcChip->SEST->u[ *fcExchangeIndex ].TWE;
-
- // fill out the TWE:
-
- // VALid entry:Dir outbound:enable CM:enal INT:
- pTWE->Seq_Accum = 0xC4000000L; // upper word flags
- pTWE->reserved = 0L;
- pTWE->Remote_Node_ID = 0L; // no more auto RSP frame! (TL/TS change)
- pTWE->Remote_Node_ID |= (InFCHS->s_id << 8); // MS 24 bits Remote_ID
-
-
- // Do we need local or extended gather list?
- // depends on size - we can handle 3 len/addr pairs
- // locally.
-
- fcp_dl = build_SEST_sgList(
- cpqfcHBAdata->PciDev,
- &pTWE->SLen1,
- Cmnd, // S/G list
- &sgPairs, // return # of pairs in S/G list (from "Data" descriptor)
- &fcChip->SEST->sgPages[ *fcExchangeIndex ]);// (for Freeing later)
-
-
- if( !fcp_dl ) // error building S/G list?
- {
- ulStatus = MEMPOOL_FAIL;
- break; // give up
- }
-
- // now that we know the S/G length, build CMND payload
- build_FCP_payload( Cmnd, (UCHAR*)&CMDfchs->pl[0], type, fcp_dl );
-
-
- if( sgPairs > 3 ) // need extended s/g list
- pTWE->Buff_Off = 0x00000000; // extended s/g list, no offset
- else
- pTWE->Buff_Off = 0x80000000; // local data, no offset
-
- pTWE->Buff_Index = 0; // Buff_Index | Link
- pTWE->Exp_RO = 0;
- pTWE->Byte_Count = 0; // filled in by TL on err
- pTWE->reserved_ = 0;
- pTWE->Exp_Byte_Cnt = fcp_dl;// sum of scatter buffers
-
- break;
-
-
-
-
-
-
- case SCSI_TRE: // TachLite Target Read Entry
-
- // It doesn't make much sense for us to "time-out" a READ,
- // but we'll use it for design consistency and internal error recovery.
- Exchanges->fcExchange[ *fcExchangeIndex].timeOut = 10; // per SCSI req.
-
- // I/O request block settings...
- *pIRB_flags = 0; // clear IRB flags
- // check PRLI (process login) info
- // to see if Initiator Requires XFER_RDY
- // if not, don't send one!
- // { PRLI check...}
- IRB_flags.SFA = 0; // don't send XFER_RDY - start data
- SfsLen = *pIRB_flags;
-
- SfsLen <<= 24; // shift flags to MSB
- SfsLen += (32L + 12L);// add SFS len (header & XFER_RDY payload)
-
-
-
- // now, fill out FCP-DATA header
- // (use buffer inside SEST object)
- dataHDR = &fcChip->SEST->DataHDR[ *fcExchangeIndex ];
-
- dataHDR->reserved = 0L; // must clear
- dataHDR->sof_eof = 0x75000000L; // SOFi3:EOFn no UAM; no CLS,noLCr,no TS
- dataHDR->d_id = (InFCHS->s_id | 0x01000000L); // R_CTL= FCP_DATA
- dataHDR->s_id = fcChip->Registers.my_al_pa; // CS_CTL = 0
-
-
- // TYPE[31-24] 8 for FCP SCSI
- // f_ctl[23:0] exchg responder, not 1st seq, xfer S.I.
- // valid RO
- dataHDR->f_ctl = 0x08810008L;
- dataHDR->seq_cnt = 0x01000000; // sequence ID (no XRDY)
- dataHDR->ox_rx_id = InFCHS->ox_rx_id & 0xFFFF0000; // we want upper 16 bits
- dataHDR->ro = 0x0L; // relative offset (n/a)
-
- // now, fill out FCP-RSP header
- // (use buffer inside SEST object)
- rspHDR = &fcChip->SEST->RspHDR[ *fcExchangeIndex ];
-
- rspHDR->reserved = 0L; // must clear
- rspHDR->sof_eof = 0x75000000L; // SOFi3:EOFn no UAM; no CLS, noLCr, no TS
- rspHDR->d_id = (InFCHS->s_id | 0x07000000L); // R_CTL= FCP_RSP
- rspHDR->s_id = fcChip->Registers.my_al_pa; // CS_CTL = 0
- // TYPE[31-24] 8 for FCP SCSI
- // f_ctl[23:0] responder|last seq| xfer S.I.
- rspHDR->f_ctl = 0x08910000L;
- rspHDR->seq_cnt = 0x02000000; // sequence ID: df_ctl: sequence count
-
- rspHDR->ro = 0x0L; // relative offset (n/a)
-
-
- // Now setup the SEST entry
- pTRE = &fcChip->SEST->u[ *fcExchangeIndex ].TRE;
-
-
- // VALid entry:Dir outbound:enable CM:enal INT:
- pTRE->Hdr_Len = 0x86010020L; // data frame Len always 32 bytes
- pTRE->Hdr_Addr = // bus address of dataHDR;
- fcChip->SEST->base +
- ((unsigned long)&fcChip->SEST->DataHDR[ *fcExchangeIndex ] -
- (unsigned long)fcChip->SEST);
-
- pTRE->RSP_Len = 64L; // hdr+data (TL assisted RSP frame)
- pTRE->RSP_Len |= (InFCHS->s_id << 8); // MS 24 bits Remote_ID
- pTRE->RSP_Addr = // bus address of rspHDR
- fcChip->SEST->base +
- ((unsigned long)&fcChip->SEST->RspHDR[ *fcExchangeIndex ] -
- (unsigned long)fcChip->SEST);
-
- // Do we need local or extended gather list?
- // depends on size - we can handle 3 len/addr pairs
- // locally.
-
- fcp_dl = build_SEST_sgList(
- cpqfcHBAdata->PciDev,
- &pTRE->GLen1,
- Cmnd, // S/G list
- &sgPairs, // return # of pairs in S/G list (from "Data" descriptor)
- &fcChip->SEST->sgPages[ *fcExchangeIndex ]);// (for Freeing later)
-
-
- if( !fcp_dl ) // error building S/G list?
- {
- ulStatus = MEMPOOL_FAIL;
- break; // give up
- }
-
- // no payload or command to build -- READ doesn't need XRDY
-
-
- if( sgPairs > 3 ) // need extended s/g list
- pTRE->Buff_Off = 0x78000000L; // extended data | (no offset)
- else // local data pointers (in SEST)
- pTRE->Buff_Off = 0xf8000000L; // local data | (no offset)
-
- // ULONG 5
- pTRE->Buff_Index = 0L; // Buff_Index | reserved
- pTRE->reserved = 0x0L; // DWord 6
-
- // DWord 7: NOTE: zero length will
- // hang TachLite!
- pTRE->Data_Len = fcp_dl; // e.g. sum of scatter buffers
-
- pTRE->reserved_ = 0L; // DWord 8
- pTRE->reserved__ = 0L; // DWord 9
-
- break;
-
-
-
-
-
-
-
- case FCP_RESPONSE:
- // Target response frame: this sequence uses an OX/RX ID
- // pair from a completed SEST exchange. We built most
- // of the response frame when we created the TWE/TRE.
-
- *pIRB_flags = 0; // clear IRB flags
- IRB_flags.SFA = 1; // send SFS (RSP)
- SfsLen = *pIRB_flags;
-
- SfsLen <<= 24; // shift flags to MSB
- SfsLen += sizeof(TachFCHDR_RSP);// add SFS len (header & RSP payload)
-
-
- Exchanges->fcExchange[ *fcExchangeIndex].type =
- FCP_RESPONSE; // change Exchange type to "response" phase
-
- // take advantage of prior knowledge of OX/RX_ID pair from
- // previous XFER outbound frame (still in fchs of exchange)
- fcChip->SEST->RspHDR[ *fcExchangeIndex ].ox_rx_id =
- CMDfchs->ox_rx_id;
-
- // Check the status of the DATA phase of the exchange so we can report
- // status to the initiator
- buildFCPstatus( fcChip, *fcExchangeIndex); // set RSP payload fields
-
- memcpy(
- CMDfchs, // re-use same XFER fchs for Response frame
- &fcChip->SEST->RspHDR[ *fcExchangeIndex ],
- sizeof( TachFCHDR_RSP ));
-
-
- break;
-
- default:
- printk("cpqfcTS: don't know how to build FC type: %Xh(%d)\n", type,type);
- break;
-
- }
-
-
-
- if( !ulStatus) // no errors above?
- {
- // FCHS is built; now build IRB
-
- // link the just built FCHS (the "command") to the IRB entry
- // for this Exchange.
- pIRB = &Exchanges->fcExchange[ *fcExchangeIndex].IRB;
-
- // len & flags according to command type above
- pIRB->Req_A_SFS_Len = SfsLen; // includes IRB flags & len
- pIRB->Req_A_SFS_Addr = // TL needs physical addr of frame to send
- fcChip->exch_dma_handle + (unsigned long)CMDfchs -
- (unsigned long)Exchanges;
-
- pIRB->Req_A_SFS_D_ID = CMDfchs->d_id << 8; // Dest_ID must be consistent!
-
- // Exchange is complete except for "fix-up" fields to be set
- // at Tachyon Queuing time:
- // IRB->Req_A_Trans_ID (OX_ID/ RX_ID):
- // for SEST entry, lower bits correspond to actual FC Exchange ID
- // fchs->OX_ID or RX_ID
- }
- else
- {
-#ifdef DBG
- printk( "FC Error: SEST build Pool Allocation failed\n");
-#endif
- // return resources...
- cpqfcTSCompleteExchange( cpqfcHBAdata->PciDev, fcChip, *fcExchangeIndex); // SEST build failed
- }
- }
- else // no Exchanges available
- {
- ulStatus = SEST_FULL;
- printk( "FC Error: no fcExchanges available\n");
- }
- return ulStatus;
-}
-
-
-
-
-
-
-// set RSP payload fields
-static void buildFCPstatus( PTACHYON fcChip, ULONG ExchangeID)
-{
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- FC_EXCHANGE *pExchange = &Exchanges->fcExchange[ExchangeID]; // shorthand
- PFCP_STATUS_RESPONSE pFcpStatus;
-
- memset( &fcChip->SEST->RspHDR[ ExchangeID ].pl, 0,
- sizeof( FCP_STATUS_RESPONSE) );
- if( pExchange->status ) // something wrong?
- {
- pFcpStatus = (PFCP_STATUS_RESPONSE) // cast RSP buffer for this xchng
- &fcChip->SEST->RspHDR[ ExchangeID ].pl;
- if( pExchange->status & COUNT_ERROR )
- {
-
- // set FCP response len valid (so we can report count error)
- pFcpStatus->fcp_status |= FCP_RSP_LEN_VALID;
- pFcpStatus->fcp_rsp_len = 0x04000000; // 4 byte len (BIG Endian)
-
- pFcpStatus->fcp_rsp_info = FCP_DATA_LEN_NOT_BURST_LEN; // RSP_CODE
- }
- }
-}
-
-
-static dma_addr_t
-cpqfc_pci_map_sg_page(
- struct pci_dev *pcidev,
- ULONG *hw_paddr, // where to put phys addr for HW use
- void *sgp_vaddr, // the virtual address of the sg page
- dma_addr_t *umap_paddr, // where to put phys addr for unmap
- unsigned int *maplen, // where to store sg entry length
- int PairCount) // number of sg pairs used in the page.
-{
- unsigned long aligned_addr = (unsigned long) sgp_vaddr;
-
- *maplen = PairCount * 8;
- aligned_addr += TL_EXT_SG_PAGE_BYTELEN;
- aligned_addr &= ~(TL_EXT_SG_PAGE_BYTELEN -1);
-
- *umap_paddr = pci_map_single(pcidev, (void *) aligned_addr,
- *maplen, PCI_DMA_TODEVICE);
- *hw_paddr = (ULONG) *umap_paddr;
-
-# if BITS_PER_LONG > 32
- if( *umap_paddr >>32 ) {
- printk("cqpfcTS:Tach SG DMA addr %p>32 bits\n",
- (void*)umap_paddr);
- return 0;
- }
-# endif
- return *umap_paddr;
-}
-
-static void
-cpqfc_undo_SEST_mappings(struct pci_dev *pcidev,
- unsigned long contigaddr, int len, int dir,
- struct scatterlist *sgl, int use_sg,
- PSGPAGES *sgPages_head,
- int allocated_pages)
-{
- PSGPAGES i, next;
-
- if (contigaddr != (unsigned long) NULL)
- pci_unmap_single(pcidev, contigaddr, len, dir);
-
- if (sgl != NULL)
- pci_unmap_sg(pcidev, sgl, use_sg, dir);
-
- for (i=*sgPages_head; i != NULL ;i = next)
- {
- pci_unmap_single(pcidev, i->busaddr, i->maplen,
- PCI_DMA_TODEVICE);
- i->busaddr = (dma_addr_t) NULL;
- i->maplen = 0L;
- next = i->next;
- kfree(i);
- }
- *sgPages_head = NULL;
-}
-
-// This routine builds scatter/gather lists into SEST entries
-// INPUTS:
-// SESTalPair - SEST address @DWordA "Local Buffer Length"
-// sgList - Scatter/Gather linked list of Len/Address data buffers
-// OUTPUT:
-// sgPairs - number of valid address/length pairs
-// Remarks:
-// The SEST data buffer pointers only depend on number of
-// length/ address pairs, NOT on the type (IWE, TRE,...)
-// Up to 3 pairs can be referenced in the SEST - more than 3
-// require this Extended S/G list page. The page holds 4, 8, 16...
-// len/addr pairs, per Scatter/Gather List Page Length Reg.
-// TachLite allows pages to be linked to any depth.
-
-//#define DBG_SEST_SGLIST 1 // for printing out S/G pairs with Ext. pages
-
-static int ap_hi_water = TL_DANGER_SGPAGES;
-
-static ULONG build_SEST_sgList(
- struct pci_dev *pcidev,
- ULONG *SESTalPairStart, // the 3 len/address buffers in SEST
- Scsi_Cmnd *Cmnd,
- ULONG *sgPairs,
- PSGPAGES *sgPages_head) // link list of TL Ext. S/G pages from O/S Pool
-
-{
- ULONG i, AllocatedPages=0; // Tach Ext. S/G page allocations
- ULONG* alPair = SESTalPairStart;
- ULONG* ext_sg_page_phys_addr_place = NULL;
- int PairCount;
- unsigned long ulBuff, contigaddr;
- ULONG total_data_len=0; // (in bytes)
- ULONG bytes_to_go = Cmnd->request_bufflen; // total xfer (S/G sum)
- ULONG thisMappingLen;
- struct scatterlist *sgl = NULL; // S/G list (Linux format)
- int sg_count, totalsgs;
- dma_addr_t busaddr;
- unsigned long thislen, offset;
- PSGPAGES *sgpage = sgPages_head;
- PSGPAGES prev_page = NULL;
-
-# define WE_HAVE_SG_LIST (sgl != (unsigned long) NULL)
- contigaddr = (unsigned long) NULL;
-
- if( !Cmnd->use_sg ) // no S/G list?
- {
- if (bytes_to_go <= TL_MAX_SG_ELEM_LEN)
- {
- *sgPairs = 1; // use "local" S/G pair in SEST entry
- // (for now, ignore address bits above #31)
-
- *alPair++ = bytes_to_go; // bits 18-0, length
-
- if (bytes_to_go != 0) {
- contigaddr = ulBuff = pci_map_single(pcidev,
- Cmnd->request_buffer,
- Cmnd->request_bufflen,
- Cmnd->sc_data_direction);
- // printk("ms %p ", ulBuff);
- }
- else {
- // No data transfer, (e.g.: Test Unit Ready)
- // printk("btg=0 ");
- *sgPairs = 0;
- memset(alPair, 0, sizeof(*alPair));
- return 0;
- }
-
-# if BITS_PER_LONG > 32
- if( ulBuff >>32 ) {
- printk("FATAL! Tachyon DMA address %p "
- "exceeds 32 bits\n", (void*)ulBuff );
- return 0;
- }
-# endif
- *alPair = (ULONG)ulBuff;
- return bytes_to_go;
- }
- else // We have a single large (too big) contiguous buffer.
- { // We will have to break it up. We'll use the scatter
- // gather code way below, but use contigaddr instead
- // of sg_dma_addr(). (this is a very rare case).
-
- unsigned long btg;
- contigaddr = pci_map_single(pcidev, Cmnd->request_buffer,
- Cmnd->request_bufflen,
- Cmnd->sc_data_direction);
-
- // printk("contigaddr = %p, len = %d\n",
- // (void *) contigaddr, bytes_to_go);
- totalsgs = 0;
- for (btg = bytes_to_go; btg > 0; ) {
- btg -= ( btg > TL_MAX_SG_ELEM_LEN ?
- TL_MAX_SG_ELEM_LEN : btg );
- totalsgs++;
- }
- sgl = NULL;
- *sgPairs = totalsgs;
- }
- }
- else // we do have a scatter gather list
- {
- // [TBD - update for Linux to support > 32 bits addressing]
- // since the format for local & extended S/G lists is different,
- // check if S/G pairs exceeds 3.
- // *sgPairs = Cmnd->use_sg; Nope, that's wrong.
-
- sgl = (struct scatterlist*)Cmnd->request_buffer;
- sg_count = pci_map_sg(pcidev, sgl, Cmnd->use_sg,
- Cmnd->sc_data_direction);
- if( sg_count <= 3 ) {
-
- // we need to be careful here that no individual mapping
- // is too large, and if any is, that breaking it up
- // doesn't push us over 3 sgs, or, if it does, that we
- // handle that case. Tachyon can take 0x7FFFF bits for length,
- // but sg structure uses "unsigned int", on the face of it,
- // up to 0xFFFFFFFF or even more.
-
- int i;
- unsigned long thislen;
-
- totalsgs = 0;
- for (i=0;i<sg_count;i++) {
- thislen = sg_dma_len(&sgl[i]);
- while (thislen >= TL_MAX_SG_ELEM_LEN) {
- totalsgs++;
- thislen -= TL_MAX_SG_ELEM_LEN;
- }
- if (thislen > 0) totalsgs++;
- }
- *sgPairs = totalsgs;
- } else totalsgs = 999; // as a first estimate, definitely >3,
-
- // if (totalsgs != sg_count)
- // printk("totalsgs = %d, sgcount=%d\n",totalsgs,sg_count);
- }
-
- if( totalsgs <= 3 ) // can (must) use "local" SEST list
- {
- while( bytes_to_go)
- {
- offset = 0L;
-
- if ( WE_HAVE_SG_LIST )
- thisMappingLen = sg_dma_len(sgl);
- else // or contiguous buffer?
- thisMappingLen = bytes_to_go;
-
- while (thisMappingLen > 0)
- {
- thislen = thisMappingLen > TL_MAX_SG_ELEM_LEN ?
- TL_MAX_SG_ELEM_LEN : thisMappingLen;
- bytes_to_go = bytes_to_go - thislen;
-
- // we have L/A pair; L = thislen, A = physicalAddress
- // load into SEST...
-
- total_data_len += thislen;
- *alPair = thislen; // bits 18-0, length
-
- alPair++;
-
- if ( WE_HAVE_SG_LIST )
- ulBuff = sg_dma_address(sgl) + offset;
- else
- ulBuff = contigaddr + offset;
-
- offset += thislen;
-
-# if BITS_PER_LONG > 32
- if( ulBuff >>32 ) {
- printk("cqpfcTS: 2Tach DMA address %p > 32 bits\n",
- (void*)ulBuff );
- printk("%s = %p, offset = %ld\n",
- WE_HAVE_SG_LIST ? "ulBuff" : "contigaddr",
- WE_HAVE_SG_LIST ? (void *) ulBuff : (void *) contigaddr,
- offset);
- return 0;
- }
-# endif
- *alPair++ = (ULONG)ulBuff; // lower 32 bits (31-0)
- thisMappingLen -= thislen;
- }
-
- if ( WE_HAVE_SG_LIST ) ++sgl; // next S/G pair
- else if (bytes_to_go != 0) printk("BTG not zero!\n");
-
-# ifdef DBG_SEST_SGLIST
- printk("L=%d ", thisMappingLen);
- printk("btg=%d ", bytes_to_go);
-# endif
-
- }
- // printk("i:%d\n", *sgPairs);
- }
- else // more than 3 pairs requires Extended S/G page (Pool Allocation)
- {
- // clear out SEST DWORDs (local S/G addr) C-F (A-B set in following logic)
- for( i=2; i<6; i++)
- alPair[i] = 0;
-
- PairCount = TL_EXT_SG_PAGE_COUNT; // forces initial page allocation
- totalsgs = 0;
- while( bytes_to_go )
- {
- // Per SEST format, we can support 524287 byte lengths per
- // S/G pair. Typical user buffers are 4k, and very rarely
- // exceed 12k due to fragmentation of physical memory pages.
- // However, on certain O/S system (not "user") buffers (on platforms
- // with huge memories), it's possible to exceed this
- // length in a single S/G address/len mapping, so we have to handle
- // that.
-
- offset = 0L;
- if ( WE_HAVE_SG_LIST )
- thisMappingLen = sg_dma_len(sgl);
- else
- thisMappingLen = bytes_to_go;
-
- while (thisMappingLen > 0)
- {
- thislen = thisMappingLen > TL_MAX_SG_ELEM_LEN ?
- TL_MAX_SG_ELEM_LEN : thisMappingLen;
- // printk("%d/%d/%d\n", thislen, thisMappingLen, bytes_to_go);
-
- // should we load into "this" extended S/G page, or allocate
- // new page?
-
- if( PairCount >= TL_EXT_SG_PAGE_COUNT )
- {
- // Now, we have to map the previous page, (triggering buffer bounce)
- // The first time thru the loop, there won't be a previous page.
- if (prev_page != NULL) // is there a prev page?
- {
- // this code is normally kind of hard to trigger,
- // you have to use up more than 256 scatter gather
- // elements to get here. Cranking down TL_MAX_SG_ELEM_LEN
- // to an absurdly low value (128 bytes or so) to artificially
- // break i/o's into a zillion pieces is how I tested it.
- busaddr = cpqfc_pci_map_sg_page(pcidev,
- ext_sg_page_phys_addr_place,
- prev_page->page,
- &prev_page->busaddr,
- &prev_page->maplen,
- PairCount);
- }
- // Allocate the TL Extended S/G list page. We have
- // to allocate twice what we want to ensure required TL alignment
- // (Tachlite TL/TS User Man. Rev 6.0, p 168)
- // We store the original allocated PVOID so we can free later
- *sgpage = kmalloc( sizeof(SGPAGES), GFP_ATOMIC);
- if ( ! *sgpage )
- {
- printk("cpqfc: Allocation failed @ %d S/G page allocations\n",
- AllocatedPages);
- total_data_len = 0; // failure!! Ext. S/G is All-or-none affair
-
- // unmap the previous mappings, if any.
-
- cpqfc_undo_SEST_mappings(pcidev, contigaddr,
- Cmnd->request_bufflen,
- Cmnd->sc_data_direction,
- sgl, Cmnd->use_sg, sgPages_head, AllocatedPages+1);
-
- // FIXME: testing shows that if we get here,
- // it's bad news. (this has been this way for a long
- // time though, AFAIK. Not that that excuses it.)
-
- return 0; // give up (and probably hang the system)
- }
- // clear out memory we just allocated
- memset( (*sgpage)->page,0,TL_EXT_SG_PAGE_BYTELEN*2);
- (*sgpage)->next = NULL;
- (*sgpage)->busaddr = (dma_addr_t) NULL;
- (*sgpage)->maplen = 0L;
-
- // align the memory - TL requires sizeof() Ext. S/G page alignment.
- // We doubled the actual required size so we could mask off LSBs
- // to get desired offset
-
- ulBuff = (unsigned long) (*sgpage)->page;
- ulBuff += TL_EXT_SG_PAGE_BYTELEN;
- ulBuff &= ~(TL_EXT_SG_PAGE_BYTELEN -1);
-
- // set pointer, in SEST if first Ext. S/G page, or in last pair
- // of linked Ext. S/G pages... (Only 32-bit PVOIDs, so just
- // load lower 32 bits)
- // NOTE: the Len field must be '0' if this is the first Ext. S/G
- // pointer in SEST, and not 0 otherwise (we know thislen != 0).
-
- *alPair = (alPair != SESTalPairStart) ? thislen : 0;
-
-# ifdef DBG_SEST_SGLIST
- printk("PairCount %d @%p even %Xh, ",
- PairCount, alPair, *alPair);
-# endif
-
- // Save the place where we need to store the physical
- // address of this scatter gather page which we get when we map it
- // (and mapping we can do only after we fill it in.)
- alPair++; // next DWORD, will contain phys addr of the ext page
- ext_sg_page_phys_addr_place = alPair;
-
- // Now, set alPair = the virtual addr of the (Extended) S/G page
- // which will accept the Len/ PhysicalAddress pairs
- alPair = (ULONG *) ulBuff;
-
- AllocatedPages++;
- if (AllocatedPages >= ap_hi_water)
- {
- // This message should rarely, if ever, come out.
- // Previously (cpqfc version <= 2.0.5) the driver would
- // just puke if more than 4 SG pages were used, and nobody
- // ever complained about that. This only comes out if
- // more than 8 pages are used.
-
- printk(KERN_WARNING
- "cpqfc: Possible danger. %d scatter gather pages used.\n"
- "cpqfc: detected seemingly extreme memory "
- "fragmentation or huge data transfers.\n",
- AllocatedPages);
- ap_hi_water = AllocatedPages+1;
- }
-
- PairCount = 1; // starting new Ext. S/G page
- prev_page = (*sgpage); // remember this page, for next time thru
- sgpage = &((*sgpage)->next);
- } // end of new TL Ext. S/G page allocation
-
- *alPair = thislen; // bits 18-0, length (range check above)
-
-# ifdef DBG_SEST_SGLIST
- printk("PairCount %d @%p, even %Xh, ", PairCount, alPair, *alPair);
-# endif
-
- alPair++; // next DWORD, physical address
-
- if ( WE_HAVE_SG_LIST )
- ulBuff = sg_dma_address(sgl) + offset;
- else
- ulBuff = contigaddr + offset;
- offset += thislen;
-
-# if BITS_PER_LONG > 32
- if( ulBuff >>32 )
- {
- printk("cqpfcTS: 1Tach DMA address %p > 32 bits\n", (void*)ulBuff );
- printk("%s = %p, offset = %ld\n",
- WE_HAVE_SG_LIST ? "ulBuff" : "contigaddr",
- WE_HAVE_SG_LIST ? (void *) ulBuff : (void *) contigaddr,
- offset);
- return 0;
- }
-# endif
-
- *alPair = (ULONG) ulBuff; // lower 32 bits (31-0)
-
-# ifdef DBG_SEST_SGLIST
- printk("odd %Xh\n", *alPair);
-# endif
- alPair++; // next DWORD, next address/length pair
-
- PairCount++; // next Length/Address pair
-
- // if (PairCount > pc_hi_water)
- // {
- // printk("pc hi = %d ", PairCount);
- // pc_hi_water = PairCount;
- // }
- bytes_to_go -= thislen;
- total_data_len += thislen;
- thisMappingLen -= thislen;
- totalsgs++;
- } // while (thisMappingLen > 0)
- if ( WE_HAVE_SG_LIST ) sgl++; // next S/G pair
- } // while (bytes_to_go)
-
- // printk("Totalsgs=%d\n", totalsgs);
- *sgPairs = totalsgs;
-
- // PCI map (and bounce) the last (and usually only) extended SG page
- busaddr = cpqfc_pci_map_sg_page(pcidev,
- ext_sg_page_phys_addr_place,
- prev_page->page,
- &prev_page->busaddr,
- &prev_page->maplen,
- PairCount);
- }
- return total_data_len;
-}
-
-
-
-// The Tachlite SEST table is referenced to OX_ID (or RX_ID). To optimize
-// performance and debuggability, we index the Exchange structure to FC X_ID
-// This enables us to build exchanges for later en-queing to Tachyon,
-// provided we have an open X_ID slot. At Tachyon queing time, we only
-// need an ERQ slot; then "fix-up" references in the
-// IRB, FCHS, etc. as needed.
-// RETURNS:
-// 0 if successful
-// non-zero on error
-//sstartex
-ULONG cpqfcTSStartExchange(
- CPQFCHBA *cpqfcHBAdata,
- LONG ExchangeID )
-{
- PTACHYON fcChip = &cpqfcHBAdata->fcChip;
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- FC_EXCHANGE *pExchange = &Exchanges->fcExchange[ ExchangeID ]; // shorthand
- USHORT producer, consumer;
- ULONG ulStatus=0;
- short int ErqIndex;
- BOOLEAN CompleteExchange = FALSE; // e.g. ACC replies are complete
- BOOLEAN SestType=FALSE;
- ULONG InboundData=0;
-
- // We will manipulate Tachlite chip registers here to successfully
- // start exchanges.
-
- // Check that link is not down -- we can't start an exchange on a
- // down link!
-
- if( fcChip->Registers.FMstatus.value & 0x80) // LPSM offline?
- {
-printk("fcStartExchange: PSM offline (%Xh), x_ID %Xh, type %Xh, port_id %Xh\n",
- fcChip->Registers.FMstatus.value & 0xFF,
- ExchangeID,
- pExchange->type,
- pExchange->fchs.d_id);
-
- if( ExchangeID >= TACH_SEST_LEN ) // Link Service Outbound frame?
- {
- // Our most popular LinkService commands are port discovery types
- // (PLOGI/ PDISC...), which are implicitly nullified by Link Down
- // events, so it makes no sense to Que them. However, ABTS should
- // be queued, since exchange sequences are likely destroyed by
- // Link Down events, and we want to notify other ports of broken
- // sequences by aborting the corresponding exchanges.
- if( pExchange->type != BLS_ABTS )
- {
- ulStatus = LNKDWN_OSLS;
- goto Done;
- // don't Que most LinkServ exchanges on LINK DOWN
- }
- }
-
- printk("fcStartExchange: Que x_ID %Xh, type %Xh\n",
- ExchangeID, pExchange->type);
- pExchange->status |= EXCHANGE_QUEUED;
- ulStatus = EXCHANGE_QUEUED;
- goto Done;
- }
-
- // Make sure ERQ has available space.
-
- producer = (USHORT)fcChip->ERQ->producerIndex; // copies for logical arith.
- consumer = (USHORT)fcChip->ERQ->consumerIndex;
- producer++; // We are testing for full que by incrementing
-
- if( producer >= ERQ_LEN ) // rollover condition?
- producer = 0;
- if( consumer != producer ) // ERQ not full?
- {
- // ****************** Need Atomic access to chip registers!!********
-
- // remember ERQ PI for copying IRB
- ErqIndex = (USHORT)fcChip->ERQ->producerIndex;
- fcChip->ERQ->producerIndex = producer; // this is written to Tachyon
- // we have an ERQ slot! If SCSI command, need SEST slot
- // otherwise we are done.
-
- // Note that Tachyon requires that bit 15 of the OX_ID or RX_ID be
- // set according to direction of data to/from Tachyon for SEST assists.
- // For consistency, enforce this rule for Link Service (non-SEST)
- // exchanges as well.
-
- // fix-up the X_ID field in IRB
- pExchange->IRB.Req_A_Trans_ID = ExchangeID & 0x7FFF; // 15-bit field
-
- // fix-up the X_ID field in fchs -- depends on Originator or Responder,
- // outgoing or incoming data?
- switch( pExchange->type )
- {
- // ORIGINATOR types... we're setting our OX_ID and
- // defaulting the responder's RX_ID to 0xFFFF
-
- case SCSI_IRE:
- // Requirement: set MSB of x_ID for Incoming TL data
- // (see "Tachyon TL/TS User's Manual", Rev 6.0, Sept.'98, pg. 50)
- InboundData = 0x8000;
-
- case SCSI_IWE:
- SestType = TRUE;
- pExchange->fchs.ox_rx_id = (ExchangeID | InboundData);
- pExchange->fchs.ox_rx_id <<= 16; // MSW shift
- pExchange->fchs.ox_rx_id |= 0xffff; // add default RX_ID
-
- // now fix-up the Data HDR OX_ID (TL automatically does rx_id)
- // (not necessary for IRE -- data buffer unused)
- if( pExchange->type == SCSI_IWE)
- {
- fcChip->SEST->DataHDR[ ExchangeID ].ox_rx_id =
- pExchange->fchs.ox_rx_id;
-
- }
-
- break;
-
-
- case FCS_NSR: // ext. link service Name Service Request
- case ELS_SCR: // ext. link service State Change Registration
- case ELS_FDISC:// ext. link service login
- case ELS_FLOGI:// ext. link service login
- case ELS_LOGO: // FC-PH extended link service logout
- case BLS_NOP: // Basic link service No OPeration
- case ELS_PLOGI:// ext. link service login (PLOGI)
- case ELS_PDISC:// ext. link service login (PDISC)
- case ELS_PRLI: // ext. link service process login
-
- pExchange->fchs.ox_rx_id = ExchangeID;
- pExchange->fchs.ox_rx_id <<= 16; // MSW shift
- pExchange->fchs.ox_rx_id |= 0xffff; // and RX_ID
-
- break;
-
-
-
-
- // RESPONDER types... we must set our RX_ID while preserving
- // sender's OX_ID
- // outgoing (or no) data
- case ELS_RJT: // extended link service reject
- case ELS_LOGO_ACC: // FC-PH extended link service logout accept
- case ELS_ACC: // ext. generic link service accept
- case ELS_PLOGI_ACC:// ext. link service login accept (PLOGI or PDISC)
- case ELS_PRLI_ACC: // ext. link service process login accept
-
- CompleteExchange = TRUE; // Reply (ACC or RJT) is end of exchange
- pExchange->fchs.ox_rx_id |= (ExchangeID & 0xFFFF);
-
- break;
-
-
- // since we are a Responder, OX_ID should already be set by
- // cpqfcTSBuildExchange(). We need to -OR- in RX_ID
- case SCSI_TWE:
- SestType = TRUE;
- // Requirement: set MSB of x_ID for Incoming TL data
- // (see "Tachyon TL/TS User's Manual", Rev 6.0, Sept.'98, pg. 50)
-
- pExchange->fchs.ox_rx_id &= 0xFFFF0000; // clear RX_ID
- // Requirement: set MSB of RX_ID for Incoming TL data
- // (see "Tachyon TL/TS User's Manual", Rev 6.0, Sept.'98, pg. 50)
- pExchange->fchs.ox_rx_id |= (ExchangeID | 0x8000);
- break;
-
-
- case SCSI_TRE:
- SestType = TRUE;
-
- // there is no XRDY for SEST target read; the data
- // header needs to be updated. Also update the RSP
- // exchange IDs for the status frame, in case it is sent automatically
- fcChip->SEST->DataHDR[ ExchangeID ].ox_rx_id |= ExchangeID;
- fcChip->SEST->RspHDR[ ExchangeID ].ox_rx_id =
- fcChip->SEST->DataHDR[ ExchangeID ].ox_rx_id;
-
- // for easier FCP response logic (works for TWE and TRE),
- // copy exchange IDs. (Not needed if TRE 'RSP' bit set)
- pExchange->fchs.ox_rx_id =
- fcChip->SEST->DataHDR[ ExchangeID ].ox_rx_id;
-
- break;
-
-
- case FCP_RESPONSE: // using existing OX_ID/ RX_ID pair,
- // start SFS FCP-RESPONSE frame
- // OX/RX_ID should already be set! (See "fcBuild" above)
- CompleteExchange = TRUE; // RSP is end of FCP-SCSI exchange
-
-
- break;
-
-
- case BLS_ABTS_RJT: // uses new RX_ID, since SEST x_ID non-existent
- case BLS_ABTS_ACC: // using existing OX_ID/ RX_ID pair from SEST entry
- CompleteExchange = TRUE; // ACC or RJT marks end of FCP-SCSI exchange
- case BLS_ABTS: // using existing OX_ID/ RX_ID pair from SEST entry
-
-
- break;
-
-
- default:
- printk("Error on fcStartExchange: undefined type %Xh(%d)\n",
- pExchange->type, pExchange->type);
- return INVALID_ARGS;
- }
-
-
- // X_ID fields are entered -- copy IRB to Tachyon's ERQ
-
-
- memcpy(
- &fcChip->ERQ->QEntry[ ErqIndex ], // dest.
- &pExchange->IRB,
- 32); // fixed (hardware) length!
-
- PCI_TRACEO( ExchangeID, 0xA0)
-
- // ACTION! May generate INT and IMQ entry
- writel( fcChip->ERQ->producerIndex,
- fcChip->Registers.ERQproducerIndex.address);
-
-
- if( ExchangeID >= TACH_SEST_LEN ) // Link Service Outbound frame?
- {
-
- // wait for completion! (TDB -- timeout and chip reset)
-
-
- PCI_TRACEO( ExchangeID, 0xA4)
-
- enable_irq( cpqfcHBAdata->HostAdapter->irq); // only way to get Sem.
-
- down_interruptible( cpqfcHBAdata->TYOBcomplete);
-
- disable_irq( cpqfcHBAdata->HostAdapter->irq);
- PCI_TRACE( 0xA4)
-
- // On login exchanges, BAD_ALPA (non-existent port_id) results in
- // FTO (Frame Time Out) on the Outbound Completion message.
- // If we got an FTO status, complete the exchange (free up slot)
- if( CompleteExchange || // flag from Reply frames
- pExchange->status ) // typically, can get FRAME_TO
- {
- cpqfcTSCompleteExchange( cpqfcHBAdata->PciDev, fcChip, ExchangeID);
- }
- }
-
- else // SEST Exchange
- {
- ulStatus = 0; // ship & pray success (e.g. FCP-SCSI)
-
- if( CompleteExchange ) // by Type of exchange (e.g. end-of-xchng)
- {
- cpqfcTSCompleteExchange( cpqfcHBAdata->PciDev, fcChip, ExchangeID);
- }
-
- else
- pExchange->status &= ~EXCHANGE_QUEUED; // clear ExchangeQueued flag
-
- }
- }
-
-
- else // ERQ 'producer' = 'consumer' and QUE is full
- {
- ulStatus = OUTQUE_FULL; // Outbound (ERQ) Que full
- }
-
-Done:
- PCI_TRACE( 0xA0)
- return ulStatus;
-}
-
-
-
-
-
-// Scan fcController->fcExchanges array for a usuable index (a "free"
-// exchange).
-// Inputs:
-// fcChip - pointer to TachLite chip structure
-// Return:
-// index - exchange array element where exchange can be built
-// -1 - exchange array is full
-// REMARKS:
-// Although this is a (yuk!) linear search, we presume
-// that the system will complete exchanges about as quickly as
-// they are submitted. A full Exchange array (and hence, max linear
-// search time for free exchange slot) almost guarantees a Fibre problem
-// of some sort.
-// In the interest of making exchanges easier to debug, we want a LRU
-// (Least Recently Used) scheme.
-
-
-static LONG FindFreeExchange( PTACHYON fcChip, ULONG type )
-{
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- ULONG i;
- ULONG ulStatus=-1; // assume failure
-
-
- if( type == SCSI_IRE ||
- type == SCSI_TRE ||
- type == SCSI_IWE ||
- type == SCSI_TWE)
- {
- // SCSI type - X_IDs should be from 0 to TACH_SEST_LEN-1
- if( fcChip->fcSestExchangeLRU >= TACH_SEST_LEN) // rollover?
- fcChip->fcSestExchangeLRU = 0;
- i = fcChip->fcSestExchangeLRU; // typically it's already free!
-
- if( Exchanges->fcExchange[i].type == 0 ) // check for "free" element
- {
- ulStatus = 0; // success!
- }
-
- else
- { // YUK! we need to do a linear search for free element.
- // Fragmentation of the fcExchange array is due to excessively
- // long completions or timeouts.
-
- while( TRUE )
- {
- if( ++i >= TACH_SEST_LEN ) // rollover check
- i = 0; // beginning of SEST X_IDs
-
-// printk( "looping for SCSI xchng ID: i=%d, type=%Xh\n",
-// i, Exchanges->fcExchange[i].type);
-
- if( Exchanges->fcExchange[i].type == 0 ) // "free"?
- {
- ulStatus = 0; // success!
- break;
- }
- if( i == fcChip->fcSestExchangeLRU ) // wrapped-around array?
- {
- printk( "SEST X_ID space full\n");
- break; // failed - prevent inf. loop
- }
- }
- }
- fcChip->fcSestExchangeLRU = i + 1; // next! (rollover check next pass)
- }
-
-
-
- else // Link Service type - X_IDs should be from TACH_SEST_LEN
- // to TACH_MAX_XID
- {
- if( fcChip->fcLsExchangeLRU >= TACH_MAX_XID || // range check
- fcChip->fcLsExchangeLRU < TACH_SEST_LEN ) // (e.g. startup)
- fcChip->fcLsExchangeLRU = TACH_SEST_LEN;
-
- i = fcChip->fcLsExchangeLRU; // typically it's already free!
- if( Exchanges->fcExchange[i].type == 0 ) // check for "free" element
- {
- ulStatus = 0; // success!
- }
-
- else
- { // YUK! we need to do a linear search for free element
- // Fragmentation of the fcExchange array is due to excessively
- // long completions or timeouts.
-
- while( TRUE )
- {
- if( ++i >= TACH_MAX_XID ) // rollover check
- i = TACH_SEST_LEN;// beginning of Link Service X_IDs
-
-// printk( "looping for xchng ID: i=%d, type=%Xh\n",
-// i, Exchanges->fcExchange[i].type);
-
- if( Exchanges->fcExchange[i].type == 0 ) // "free"?
- {
- ulStatus = 0; // success!
- break;
- }
- if( i == fcChip->fcLsExchangeLRU ) // wrapped-around array?
- {
- printk( "LinkService X_ID space full\n");
- break; // failed - prevent inf. loop
- }
- }
- }
- fcChip->fcLsExchangeLRU = i + 1; // next! (rollover check next pass)
-
- }
-
- if( !ulStatus ) // success?
- Exchanges->fcExchange[i].type = type; // allocate it.
-
- else
- i = -1; // error - all exchanges "open"
-
- return i;
-}
-
-static void
-cpqfc_pci_unmap_extended_sg(struct pci_dev *pcidev,
- PTACHYON fcChip,
- ULONG x_ID)
-{
- // Unmaps the memory regions used to hold the scatter gather lists
-
- PSGPAGES i;
-
- // Were there any such regions needing unmapping?
- if (! USES_EXTENDED_SGLIST(fcChip->SEST, x_ID))
- return; // No such regions, we're outta here.
-
- // for each extended scatter gather region needing unmapping...
- for (i=fcChip->SEST->sgPages[x_ID] ; i != NULL ; i = i->next)
- pci_unmap_single(pcidev, i->busaddr, i->maplen,
- PCI_DMA_TODEVICE);
-}
-
-// Called also from cpqfcTScontrol.o, so can't be static
-void
-cpqfc_pci_unmap(struct pci_dev *pcidev,
- Scsi_Cmnd *cmd,
- PTACHYON fcChip,
- ULONG x_ID)
-{
- // Undo the DMA mappings
- if (cmd->use_sg) { // Used scatter gather list for data buffer?
- cpqfc_pci_unmap_extended_sg(pcidev, fcChip, x_ID);
- pci_unmap_sg(pcidev, cmd->buffer, cmd->use_sg,
- cmd->sc_data_direction);
- // printk("umsg %d\n", cmd->use_sg);
- }
- else if (cmd->request_bufflen) {
- // printk("ums %p ", fcChip->SEST->u[ x_ID ].IWE.GAddr1);
- pci_unmap_single(pcidev, fcChip->SEST->u[ x_ID ].IWE.GAddr1,
- cmd->request_bufflen,
- cmd->sc_data_direction);
- }
-}
-
-// We call this routine to free an Exchange for any reason:
-// completed successfully, completed with error, aborted, etc.
-
-// returns FALSE if Exchange failed and "retry" is acceptable
-// returns TRUE if Exchange was successful, or retry is impossible
-// (e.g. port/device gone).
-//scompleteexchange
-
-void cpqfcTSCompleteExchange(
- struct pci_dev *pcidev,
- PTACHYON fcChip,
- ULONG x_ID)
-{
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- int already_unmapped = 0;
-
- if( x_ID < TACH_SEST_LEN ) // SEST-based (or LinkServ for FCP exchange)
- {
- if( Exchanges->fcExchange[ x_ID ].Cmnd == NULL ) // what#@!
- {
-// TriggerHBA( fcChip->Registers.ReMapMemBase, 0);
- printk(" x_ID %Xh, type %Xh, NULL ptr!\n", x_ID,
- Exchanges->fcExchange[ x_ID ].type);
-
- goto CleanUpSestResources; // this path should be very rare.
- }
-
- // we have Linux Scsi Cmnd ptr..., now check our Exchange status
- // to decide how to complete this SEST FCP exchange
-
- if( Exchanges->fcExchange[ x_ID ].status ) // perhaps a Tach indicated problem,
- // or abnormal exchange completion
- {
- // set FCP Link statistics
-
- if( Exchanges->fcExchange[ x_ID ].status & FC2_TIMEOUT)
- fcChip->fcStats.timeouts++;
- if( Exchanges->fcExchange[ x_ID ].status & INITIATOR_ABORT)
- fcChip->fcStats.FC4aborted++;
- if( Exchanges->fcExchange[ x_ID ].status & COUNT_ERROR)
- fcChip->fcStats.CntErrors++;
- if( Exchanges->fcExchange[ x_ID ].status & LINKFAIL_TX)
- fcChip->fcStats.linkFailTX++;
- if( Exchanges->fcExchange[ x_ID ].status & LINKFAIL_RX)
- fcChip->fcStats.linkFailRX++;
- if( Exchanges->fcExchange[ x_ID ].status & OVERFLOW)
- fcChip->fcStats.CntErrors++;
-
- // First, see if the Scsi upper level initiated an ABORT on this
- // exchange...
- if( Exchanges->fcExchange[ x_ID ].status == INITIATOR_ABORT )
- {
- printk(" DID_ABORT, x_ID %Xh, Cmnd %p ",
- x_ID, Exchanges->fcExchange[ x_ID ].Cmnd);
- goto CleanUpSestResources; // (we don't expect Linux _aborts)
- }
-
- // Did our driver timeout the Exchange, or did Tachyon indicate
- // a failure during transmission? Ask for retry with "SOFT_ERROR"
- else if( Exchanges->fcExchange[ x_ID ].status & FC2_TIMEOUT)
- {
-// printk("result DID_SOFT_ERROR, x_ID %Xh, Cmnd %p\n",
-// x_ID, Exchanges->fcExchange[ x_ID ].Cmnd);
- Exchanges->fcExchange[ x_ID ].Cmnd->result = (DID_SOFT_ERROR <<16);
- }
-
- // Did frame(s) for an open exchange arrive in the SFQ,
- // meaning the SEST was unable to process them?
- else if( Exchanges->fcExchange[ x_ID ].status & SFQ_FRAME)
- {
-// printk("result DID_SOFT_ERROR, x_ID %Xh, Cmnd %p\n",
-// x_ID, Exchanges->fcExchange[ x_ID ].Cmnd);
- Exchanges->fcExchange[ x_ID ].Cmnd->result = (DID_SOFT_ERROR <<16);
- }
-
- // Did our driver timeout the Exchange, or did Tachyon indicate
- // a failure during transmission? Ask for retry with "SOFT_ERROR"
- else if(
- (Exchanges->fcExchange[ x_ID ].status & LINKFAIL_TX) ||
- (Exchanges->fcExchange[ x_ID ].status & PORTID_CHANGED) ||
- (Exchanges->fcExchange[ x_ID ].status & FRAME_TO) ||
- (Exchanges->fcExchange[ x_ID ].status & INV_ENTRY) ||
- (Exchanges->fcExchange[ x_ID ].status & ABORTSEQ_NOTIFY) )
-
-
- {
-// printk("result DID_SOFT_ERROR, x_ID %Xh, Cmnd %p\n",
-// x_ID, Exchanges->fcExchange[ x_ID ].Cmnd);
- Exchanges->fcExchange[ x_ID ].Cmnd->result = (DID_SOFT_ERROR <<16);
-
-
- }
-
- // e.g., a LOGOut happened, or device never logged back in.
- else if( Exchanges->fcExchange[ x_ID ].status & DEVICE_REMOVED)
- {
-// printk(" *LOGOut or timeout on login!* ");
- // trigger?
-// TriggerHBA( fcChip->Registers.ReMapMemBase, 0);
-
- Exchanges->fcExchange[ x_ID ].Cmnd->result = (DID_BAD_TARGET <<16);
- }
-
-
- // Did Tachyon indicate a CNT error? We need further analysis
- // to determine if the exchange is acceptable
- else if( Exchanges->fcExchange[ x_ID ].status == COUNT_ERROR)
- {
- UCHAR ScsiStatus;
- FCP_STATUS_RESPONSE *pFcpStatus =
- (PFCP_STATUS_RESPONSE)&fcChip->SEST->RspHDR[ x_ID ].pl;
-
- ScsiStatus = pFcpStatus->fcp_status >>24;
-
- // If the command is a SCSI Read/Write type, we don't tolerate
- // count errors of any kind; assume the count error is due to
- // a dropped frame and ask for retry...
-
- if(( (Exchanges->fcExchange[ x_ID ].Cmnd->cmnd[0] == 0x8) ||
- (Exchanges->fcExchange[ x_ID ].Cmnd->cmnd[0] == 0x28) ||
- (Exchanges->fcExchange[ x_ID ].Cmnd->cmnd[0] == 0xA) ||
- (Exchanges->fcExchange[ x_ID ].Cmnd->cmnd[0] == 0x2A) )
- &&
- ScsiStatus == 0 )
- {
- // ask for retry
-/* printk("COUNT_ERROR retry, x_ID %Xh, status %Xh, Cmnd %p\n",
- x_ID, Exchanges->fcExchange[ x_ID ].status,
- Exchanges->fcExchange[ x_ID ].Cmnd);*/
- Exchanges->fcExchange[ x_ID ].Cmnd->result = (DID_SOFT_ERROR <<16);
- }
-
- else // need more analysis
- {
- cpqfcTSCheckandSnoopFCP(fcChip, x_ID); // (will set ->result)
- }
- }
-
- // default: NOTE! We don't ever want to get here. Getting here
- // implies something new is happening that we've never had a test
- // case for. Need code maintenance! Return "ERROR"
- else
- {
- unsigned int stat = Exchanges->fcExchange[ x_ID ].status;
- printk("DEFAULT result %Xh, x_ID %Xh, Cmnd %p",
- Exchanges->fcExchange[ x_ID ].status, x_ID,
- Exchanges->fcExchange[ x_ID ].Cmnd);
-
- if (stat & INVALID_ARGS) printk(" INVALID_ARGS ");
- if (stat & LNKDWN_OSLS) printk(" LNKDWN_OSLS ");
- if (stat & LNKDWN_LASER) printk(" LNKDWN_LASER ");
- if (stat & OUTQUE_FULL) printk(" OUTQUE_FULL ");
- if (stat & DRIVERQ_FULL) printk(" DRIVERQ_FULL ");
- if (stat & SEST_FULL) printk(" SEST_FULL ");
- if (stat & BAD_ALPA) printk(" BAD_ALPA ");
- if (stat & OVERFLOW) printk(" OVERFLOW ");
- if (stat & COUNT_ERROR) printk(" COUNT_ERROR ");
- if (stat & LINKFAIL_RX) printk(" LINKFAIL_RX ");
- if (stat & ABORTSEQ_NOTIFY) printk(" ABORTSEQ_NOTIFY ");
- if (stat & LINKFAIL_TX) printk(" LINKFAIL_TX ");
- if (stat & HOSTPROG_ERR) printk(" HOSTPROG_ERR ");
- if (stat & FRAME_TO) printk(" FRAME_TO ");
- if (stat & INV_ENTRY) printk(" INV_ENTRY ");
- if (stat & SESTPROG_ERR) printk(" SESTPROG_ERR ");
- if (stat & OUTBOUND_TIMEOUT) printk(" OUTBOUND_TIMEOUT ");
- if (stat & INITIATOR_ABORT) printk(" INITIATOR_ABORT ");
- if (stat & MEMPOOL_FAIL) printk(" MEMPOOL_FAIL ");
- if (stat & FC2_TIMEOUT) printk(" FC2_TIMEOUT ");
- if (stat & TARGET_ABORT) printk(" TARGET_ABORT ");
- if (stat & EXCHANGE_QUEUED) printk(" EXCHANGE_QUEUED ");
- if (stat & PORTID_CHANGED) printk(" PORTID_CHANGED ");
- if (stat & DEVICE_REMOVED) printk(" DEVICE_REMOVED ");
- if (stat & SFQ_FRAME) printk(" SFQ_FRAME ");
- printk("\n");
-
- Exchanges->fcExchange[ x_ID ].Cmnd->result = (DID_ERROR <<16);
- }
- }
- else // definitely no Tach problem, but perhaps an FCP problem
- {
- // set FCP Link statistic
- fcChip->fcStats.ok++;
- cpqfcTSCheckandSnoopFCP( fcChip, x_ID); // (will set ->result)
- }
-
- cpqfc_pci_unmap(pcidev, Exchanges->fcExchange[x_ID].Cmnd,
- fcChip, x_ID); // undo DMA mappings.
- already_unmapped = 1;
-
- // OK, we've set the Scsi "->result" field, so proceed with calling
- // Linux Scsi "done" (if not NULL), and free any kernel memory we
- // may have allocated for the exchange.
-
- PCI_TRACEO( (ULONG)Exchanges->fcExchange[x_ID].Cmnd, 0xAC);
- // complete the command back to upper Scsi drivers
- if( Exchanges->fcExchange[ x_ID ].Cmnd->scsi_done != NULL)
- {
- // Calling "done" on an Linux _abort() aborted
- // Cmnd causes a kernel panic trying to re-free mem.
- // Actually, we shouldn't do anything with an _abort CMND
- if( Exchanges->fcExchange[ x_ID ].Cmnd->result != (DID_ABORT<<16) )
- {
- PCI_TRACE(0xAC)
- call_scsi_done(Exchanges->fcExchange[ x_ID ].Cmnd);
- }
- else
- {
-// printk(" not calling scsi_done on x_ID %Xh, Cmnd %p\n",
-// x_ID, Exchanges->fcExchange[ x_ID ].Cmnd);
- }
- }
- else{
- printk(" x_ID %Xh, type %Xh, Cdb0 %Xh\n", x_ID,
- Exchanges->fcExchange[ x_ID ].type,
- Exchanges->fcExchange[ x_ID ].Cmnd->cmnd[0]);
- printk(" cpqfcTS: Null scsi_done function pointer!\n");
- }
-
-
- // Now, clean up non-Scsi_Cmnd items...
-CleanUpSestResources:
-
- if (!already_unmapped)
- cpqfc_pci_unmap(pcidev, Exchanges->fcExchange[x_ID].Cmnd,
- fcChip, x_ID); // undo DMA mappings.
-
- // Was an Extended Scatter/Gather page allocated? We know
- // this by checking DWORD 4, bit 31 ("LOC") of SEST entry
- if( !(fcChip->SEST->u[ x_ID ].IWE.Buff_Off & 0x80000000))
- {
- PSGPAGES p, next;
-
- // extended S/G list was used -- Free the allocated ext. S/G pages
- for (p = fcChip->SEST->sgPages[x_ID]; p != NULL; p = next) {
- next = p->next;
- kfree(p);
- }
- fcChip->SEST->sgPages[x_ID] = NULL;
- }
-
- Exchanges->fcExchange[ x_ID ].Cmnd = NULL;
- } // Done with FCP (SEST) exchanges
-
-
- // the remaining logic is common to ALL Exchanges:
- // FCP(SEST) and LinkServ.
-
- Exchanges->fcExchange[ x_ID ].type = 0; // there -- FREE!
- Exchanges->fcExchange[ x_ID ].status = 0;
-
- PCI_TRACEO( x_ID, 0xAC)
-
-
- return;
-} // (END of CompleteExchange function)
-
-
-
-
-// Unfortunately, we must snoop all command completions in
-// order to manipulate certain return fields, and take note of
-// device types, etc., to facilitate the Fibre-Channel to SCSI
-// "mapping".
-// (Watch for BIG Endian confusion on some payload fields)
-void cpqfcTSCheckandSnoopFCP( PTACHYON fcChip, ULONG x_ID)
-{
- FC_EXCHANGES *Exchanges = fcChip->Exchanges;
- Scsi_Cmnd *Cmnd = Exchanges->fcExchange[ x_ID].Cmnd;
- FCP_STATUS_RESPONSE *pFcpStatus =
- (PFCP_STATUS_RESPONSE)&fcChip->SEST->RspHDR[ x_ID ].pl;
- UCHAR ScsiStatus;
-
- ScsiStatus = pFcpStatus->fcp_status >>24;
-
-#ifdef FCP_COMPLETION_DBG
- printk("ScsiStatus = 0x%X\n", ScsiStatus);
-#endif
-
- // First, check FCP status
- if( pFcpStatus->fcp_status & FCP_RSP_LEN_VALID )
- {
- // check response code (RSP_CODE) -- most popular is bad len
- // 1st 4 bytes of rsp info -- only byte 3 interesting
- if( pFcpStatus->fcp_rsp_info & FCP_DATA_LEN_NOT_BURST_LEN )
- {
-
- // do we EVER get here?
- printk("cpqfcTS: FCP data len not burst len, x_ID %Xh\n", x_ID);
- }
- }
-
- // for now, go by the ScsiStatus, and manipulate certain
- // commands when necessary...
- if( ScsiStatus == 0) // SCSI status byte "good"?
- {
- Cmnd->result = 0; // everything's OK
-
- if( (Cmnd->cmnd[0] == INQUIRY))
- {
- UCHAR *InquiryData = Cmnd->request_buffer;
- PFC_LOGGEDIN_PORT pLoggedInPort;
-
- // We need to manipulate INQUIRY
- // strings for COMPAQ RAID controllers to force
- // Linux to scan additional LUNs. Namely, set
- // the Inquiry string byte 2 (ANSI-approved version)
- // to 2.
-
- if( !memcmp( &InquiryData[8], "COMPAQ", 6 ))
- {
- InquiryData[2] = 0x2; // claim SCSI-2 compliance,
- // so multiple LUNs may be scanned.
- // (no SCSI-2 problems known in CPQ)
- }
-
- // snoop the Inquiry to detect Disk, Tape, etc. type
- // (search linked list for the port_id we sent INQUIRY to)
- pLoggedInPort = fcFindLoggedInPort( fcChip,
- NULL, // DON'T search Scsi Nexus (we will set it)
- Exchanges->fcExchange[ x_ID].fchs.d_id & 0xFFFFFF,
- NULL, // DON'T search linked list for FC WWN
- NULL); // DON'T care about end of list
-
- if( pLoggedInPort )
- {
- pLoggedInPort->ScsiNexus.InqDeviceType = InquiryData[0];
- }
- else
- {
- printk("cpqfcTS: can't find LoggedIn FC port %06X for INQUIRY\n",
- Exchanges->fcExchange[ x_ID].fchs.d_id & 0xFFFFFF);
- }
- }
- }
-
-
- // Scsi Status not good -- pass it back to caller
-
- else
- {
- Cmnd->result = ScsiStatus; // SCSI status byte is 1st
-
- // check for valid "sense" data
-
- if( pFcpStatus->fcp_status & FCP_SNS_LEN_VALID )
- { // limit Scsi Sense field length!
- int SenseLen = pFcpStatus->fcp_sns_len >>24; // (BigEndian) lower byte
-
- SenseLen = SenseLen > sizeof( Cmnd->sense_buffer) ?
- sizeof( Cmnd->sense_buffer) : SenseLen;
-
-
-#ifdef FCP_COMPLETION_DBG
- printk("copy sense_buffer %p, len %d, result %Xh\n",
- Cmnd->sense_buffer, SenseLen, Cmnd->result);
-#endif
-
- // NOTE: There is some dispute over the FCP response
- // format. Most FC devices assume that FCP_RSP_INFO
- // is 8 bytes long, in spite of the fact that FCP_RSP_LEN
- // is (virtually) always 0 and the field is "invalid".
- // Some other devices assume that
- // the FCP_SNS_INFO begins after FCP_RSP_LEN bytes (i.e. 0)
- // when the FCP_RSP is invalid (this almost appears to be
- // one of those "religious" issues).
- // Consequently, we test the usual position of FCP_SNS_INFO
- // for 7Xh, since the SCSI sense format says the first
- // byte ("error code") should be 0x70 or 0x71. In practice,
- // we find that every device does in fact have 0x70 or 0x71
- // in the first byte position, so this test works for all
- // FC devices.
- // (This logic is especially effective for the CPQ/DEC HSG80
- // & HSG60 controllers).
-
- if( (pFcpStatus->fcp_sns_info[0] & 0x70) == 0x70 )
- memcpy( Cmnd->sense_buffer,
- &pFcpStatus->fcp_sns_info[0], SenseLen);
- else
- {
- unsigned char *sbPtr =
- (unsigned char *)&pFcpStatus->fcp_sns_info[0];
- sbPtr -= 8; // back up 8 bytes hoping to find the
- // start of the sense buffer
- memcpy( Cmnd->sense_buffer, sbPtr, SenseLen);
- }
-
- // in the special case of Device Reset, tell upper layer
- // to immediately retry (with SOFT_ERROR status)
- // look for Sense Key Unit Attention (0x6) with ASC Device
- // Reset (0x29)
- // printk("SenseLen %d, Key = 0x%X, ASC = 0x%X\n",
- // SenseLen, Cmnd->sense_buffer[2],
- // Cmnd->sense_buffer[12]);
- if( ((Cmnd->sense_buffer[2] & 0xF) == 0x6) &&
- (Cmnd->sense_buffer[12] == 0x29) ) // Sense Code "reset"
- {
- Cmnd->result |= (DID_SOFT_ERROR << 16); // "Host" status byte 3rd
- }
-
- // check for SenseKey "HARDWARE ERROR", ASC InternalTargetFailure
- else if( ((Cmnd->sense_buffer[2] & 0xF) == 0x4) && // "hardware error"
- (Cmnd->sense_buffer[12] == 0x44) ) // Addtl. Sense Code
- {
-// printk("HARDWARE_ERROR, Channel/Target/Lun %d/%d/%d\n",
-// Cmnd->channel, Cmnd->target, Cmnd->lun);
- Cmnd->result |= (DID_ERROR << 16); // "Host" status byte 3rd
- }
-
- } // (end of sense len valid)
-
- // there is no sense data to help out Linux's Scsi layers...
- // We'll just return the Scsi status and hope he will "do the
- // right thing"
- else
- {
- // as far as we know, the Scsi status is sufficient
- Cmnd->result |= (DID_OK << 16); // "Host" status byte 3rd
- }
- }
-}
-
-
-
-//PPPPPPPPPPPPPPPPPPPPPPPPP PAYLOAD PPPPPPPPP
-// build data PAYLOAD; SCSI FCP_CMND I.U.
-// remember BIG ENDIAN payload - DWord values must be byte-reversed
-// (hence the affinity for byte pointer building).
-
-static int build_FCP_payload( Scsi_Cmnd *Cmnd,
- UCHAR* payload, ULONG type, ULONG fcp_dl )
-{
- int i;
-
-
- switch( type)
- {
-
- case SCSI_IWE:
- case SCSI_IRE:
- // 8 bytes FCP_LUN
- // Peripheral Device or Volume Set addressing, and LUN mapping
- // When the FC port was looked up, we copied address mode
- // and any LUN mask to the scratch pad SCp.phase & .mode
-
- *payload++ = (UCHAR)Cmnd->SCp.phase;
-
- // Now, because of "lun masking"
- // (aka selective storage presentation),
- // the contiguous Linux Scsi lun number may not match the
- // device's lun number, so we may have to "map".
-
- *payload++ = (UCHAR)Cmnd->SCp.have_data_in;
-
- // We don't know of anyone in the FC business using these
- // extra "levels" of addressing. In fact, confusion still exists
- // just using the FIRST level... ;-)
-
- *payload++ = 0; // 2nd level addressing
- *payload++ = 0;
- *payload++ = 0; // 3rd level addressing
- *payload++ = 0;
- *payload++ = 0; // 4th level addressing
- *payload++ = 0;
-
- // 4 bytes Control Field FCP_CNTL
- *payload++ = 0; // byte 0: (MSB) reserved
- *payload++ = 0; // byte 1: task codes
-
- // byte 2: task management flags
- // another "use" of the spare field to accomplish TDR
- // note combination needed
- if( (Cmnd->cmnd[0] == RELEASE) &&
- (Cmnd->SCp.buffers_residual == FCP_TARGET_RESET) )
- {
- Cmnd->cmnd[0] = 0; // issue "Test Unit Ready" for TDR
- *payload++ = 0x20; // target device reset bit
- }
- else
- *payload++ = 0; // no TDR
- // byte 3: (LSB) execution management codes
- // bit 0 write, bit 1 read (don't set together)
-
- if( fcp_dl != 0 )
- {
- if( type == SCSI_IWE ) // WRITE
- *payload++ = 1;
- else // READ
- *payload++ = 2;
- }
- else
- {
- // On some devices, if RD or WR bits are set,
- // and fcp_dl is 0, they will generate an error on the command.
- // (i.e., if direction is specified, they insist on a length).
- *payload++ = 0; // no data (necessary for CPQ)
- }
-
-
- // NOTE: clean this up if/when MAX_COMMAND_SIZE is increased to 16
- // FCP_CDB allows 16 byte SCSI command descriptor blk;
- // Linux SCSI CDB array is MAX_COMMAND_SIZE (12 at this time...)
- for( i=0; (i < Cmnd->cmd_len) && i < MAX_COMMAND_SIZE; i++)
- *payload++ = Cmnd->cmnd[i];
-
- // if( Cmnd->cmd_len == 16 )
- // {
- // memcpy( payload, &Cmnd->SCp.buffers_residual, 4);
- // }
- payload+= (16 - i);
-
- // FCP_DL is largest number of expected data bytes
- // per CDB (i.e. read/write command)
- *payload++ = (UCHAR)(fcp_dl >>24); // (MSB) 8 bytes data len FCP_DL
- *payload++ = (UCHAR)(fcp_dl >>16);
- *payload++ = (UCHAR)(fcp_dl >>8);
- *payload++ = (UCHAR)fcp_dl; // (LSB)
- break;
-
- case SCSI_TWE: // need FCP_XFER_RDY
- *payload++ = 0; // (4 bytes) DATA_RO (MSB byte 0)
- *payload++ = 0;
- *payload++ = 0;
- *payload++ = 0; // LSB (byte 3)
- // (4 bytes) BURST_LEN
- // size of following FCP_DATA payload
- *payload++ = (UCHAR)(fcp_dl >>24); // (MSB) 8 bytes data len FCP_DL
- *payload++ = (UCHAR)(fcp_dl >>16);
- *payload++ = (UCHAR)(fcp_dl >>8);
- *payload++ = (UCHAR)fcp_dl; // (LSB)
- // 4 bytes RESERVED
- *payload++ = 0;
- *payload++ = 0;
- *payload++ = 0;
- *payload++ = 0;
- break;
-
- default:
- break;
- }
-
- return 0;
-}
-
git.openpandora.org / pandora-kernel.git / commitdiff