2 * Linux MegaRAID driver for SAS based RAID controllers
4 * Copyright (c) 2009-2011 LSI Corporation.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * FILE: megaraid_sas_base.c
21 * Version : v00.00.06.12-rc1
23 * Authors: LSI Corporation
27 * Adam Radford <linuxraid@lsi.com>
29 * Send feedback to: <megaraidlinux@lsi.com>
31 * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
35 #include <linux/kernel.h>
36 #include <linux/types.h>
37 #include <linux/pci.h>
38 #include <linux/list.h>
39 #include <linux/moduleparam.h>
40 #include <linux/module.h>
41 #include <linux/spinlock.h>
42 #include <linux/interrupt.h>
43 #include <linux/delay.h>
44 #include <linux/uio.h>
45 #include <linux/slab.h>
46 #include <asm/uaccess.h>
48 #include <linux/compat.h>
49 #include <linux/blkdev.h>
50 #include <linux/mutex.h>
51 #include <linux/poll.h>
53 #include <scsi/scsi.h>
54 #include <scsi/scsi_cmnd.h>
55 #include <scsi/scsi_device.h>
56 #include <scsi/scsi_host.h>
57 #include <scsi/scsi_tcq.h>
58 #include "megaraid_sas_fusion.h"
59 #include "megaraid_sas.h"
62 * poll_mode_io:1- schedule complete completion from q cmd
64 static unsigned int poll_mode_io;
65 module_param_named(poll_mode_io, poll_mode_io, int, 0);
66 MODULE_PARM_DESC(poll_mode_io,
67 "Complete cmds from IO path, (default=0)");
70 * Number of sectors per IO command
71 * Will be set in megasas_init_mfi if user does not provide
73 static unsigned int max_sectors;
74 module_param_named(max_sectors, max_sectors, int, 0);
75 MODULE_PARM_DESC(max_sectors,
76 "Maximum number of sectors per IO command");
78 static int msix_disable;
79 module_param(msix_disable, int, S_IRUGO);
80 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
82 MODULE_LICENSE("GPL");
83 MODULE_VERSION(MEGASAS_VERSION);
84 MODULE_AUTHOR("megaraidlinux@lsi.com");
85 MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
87 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
88 static int megasas_get_pd_list(struct megasas_instance *instance);
89 static int megasas_issue_init_mfi(struct megasas_instance *instance);
90 static int megasas_register_aen(struct megasas_instance *instance,
91 u32 seq_num, u32 class_locale_word);
93 * PCI ID table for all supported controllers
95 static struct pci_device_id megasas_pci_table[] = {
97 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
99 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
101 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
103 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
105 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
107 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
109 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
111 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
112 /* xscale IOP, vega */
113 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
115 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
117 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
122 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
124 static int megasas_mgmt_majorno;
125 static struct megasas_mgmt_info megasas_mgmt_info;
126 static struct fasync_struct *megasas_async_queue;
127 static DEFINE_MUTEX(megasas_async_queue_mutex);
129 static int megasas_poll_wait_aen;
130 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
131 static u32 support_poll_for_event;
133 static u32 support_device_change;
135 /* define lock for aen poll */
136 spinlock_t poll_aen_lock;
139 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
142 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
144 megasas_adp_reset_gen2(struct megasas_instance *instance,
145 struct megasas_register_set __iomem *reg_set);
146 static irqreturn_t megasas_isr(int irq, void *devp);
148 megasas_init_adapter_mfi(struct megasas_instance *instance);
150 megasas_build_and_issue_cmd(struct megasas_instance *instance,
151 struct scsi_cmnd *scmd);
152 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
154 megasas_release_fusion(struct megasas_instance *instance);
156 megasas_ioc_init_fusion(struct megasas_instance *instance);
158 megasas_free_cmds_fusion(struct megasas_instance *instance);
160 megasas_get_map_info(struct megasas_instance *instance);
162 megasas_sync_map_info(struct megasas_instance *instance);
164 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd);
165 void megasas_reset_reply_desc(struct megasas_instance *instance);
166 u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map,
167 struct LD_LOAD_BALANCE_INFO *lbInfo);
168 int megasas_reset_fusion(struct Scsi_Host *shost);
169 void megasas_fusion_ocr_wq(struct work_struct *work);
172 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
174 instance->instancet->fire_cmd(instance,
175 cmd->frame_phys_addr, 0, instance->reg_set);
179 * megasas_get_cmd - Get a command from the free pool
180 * @instance: Adapter soft state
182 * Returns a free command from the pool
184 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
188 struct megasas_cmd *cmd = NULL;
190 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
192 if (!list_empty(&instance->cmd_pool)) {
193 cmd = list_entry((&instance->cmd_pool)->next,
194 struct megasas_cmd, list);
195 list_del_init(&cmd->list);
197 printk(KERN_ERR "megasas: Command pool empty!\n");
200 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
205 * megasas_return_cmd - Return a cmd to free command pool
206 * @instance: Adapter soft state
207 * @cmd: Command packet to be returned to free command pool
210 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
214 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
217 cmd->frame_count = 0;
218 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
219 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
221 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
222 list_add_tail(&cmd->list, &instance->cmd_pool);
224 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
229 * The following functions are defined for xscale
230 * (deviceid : 1064R, PERC5) controllers
234 * megasas_enable_intr_xscale - Enables interrupts
235 * @regs: MFI register set
238 megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs)
240 writel(0, &(regs)->outbound_intr_mask);
242 /* Dummy readl to force pci flush */
243 readl(®s->outbound_intr_mask);
247 * megasas_disable_intr_xscale -Disables interrupt
248 * @regs: MFI register set
251 megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs)
254 writel(mask, ®s->outbound_intr_mask);
255 /* Dummy readl to force pci flush */
256 readl(®s->outbound_intr_mask);
260 * megasas_read_fw_status_reg_xscale - returns the current FW status value
261 * @regs: MFI register set
264 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
266 return readl(&(regs)->outbound_msg_0);
269 * megasas_clear_interrupt_xscale - Check & clear interrupt
270 * @regs: MFI register set
273 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
278 * Check if it is our interrupt
280 status = readl(®s->outbound_intr_status);
282 if (status & MFI_OB_INTR_STATUS_MASK)
283 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
284 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
285 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
288 * Clear the interrupt by writing back the same value
291 writel(status, ®s->outbound_intr_status);
293 /* Dummy readl to force pci flush */
294 readl(®s->outbound_intr_status);
300 * megasas_fire_cmd_xscale - Sends command to the FW
301 * @frame_phys_addr : Physical address of cmd
302 * @frame_count : Number of frames for the command
303 * @regs : MFI register set
306 megasas_fire_cmd_xscale(struct megasas_instance *instance,
307 dma_addr_t frame_phys_addr,
309 struct megasas_register_set __iomem *regs)
312 spin_lock_irqsave(&instance->hba_lock, flags);
313 writel((frame_phys_addr >> 3)|(frame_count),
314 &(regs)->inbound_queue_port);
315 spin_unlock_irqrestore(&instance->hba_lock, flags);
319 * megasas_adp_reset_xscale - For controller reset
320 * @regs: MFI register set
323 megasas_adp_reset_xscale(struct megasas_instance *instance,
324 struct megasas_register_set __iomem *regs)
328 writel(MFI_ADP_RESET, ®s->inbound_doorbell);
330 for (i = 0; i < 3; i++)
331 msleep(1000); /* sleep for 3 secs */
333 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
334 printk(KERN_NOTICE "pcidata = %x\n", pcidata);
336 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
338 pci_write_config_dword(instance->pdev,
339 MFI_1068_PCSR_OFFSET, pcidata);
341 for (i = 0; i < 2; i++)
342 msleep(1000); /* need to wait 2 secs again */
345 pci_read_config_dword(instance->pdev,
346 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
347 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
348 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
349 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
351 pci_write_config_dword(instance->pdev,
352 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
359 * megasas_check_reset_xscale - For controller reset check
360 * @regs: MFI register set
363 megasas_check_reset_xscale(struct megasas_instance *instance,
364 struct megasas_register_set __iomem *regs)
367 consumer = *instance->consumer;
369 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
370 (*instance->consumer == MEGASAS_ADPRESET_INPROG_SIGN)) {
376 static struct megasas_instance_template megasas_instance_template_xscale = {
378 .fire_cmd = megasas_fire_cmd_xscale,
379 .enable_intr = megasas_enable_intr_xscale,
380 .disable_intr = megasas_disable_intr_xscale,
381 .clear_intr = megasas_clear_intr_xscale,
382 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
383 .adp_reset = megasas_adp_reset_xscale,
384 .check_reset = megasas_check_reset_xscale,
385 .service_isr = megasas_isr,
386 .tasklet = megasas_complete_cmd_dpc,
387 .init_adapter = megasas_init_adapter_mfi,
388 .build_and_issue_cmd = megasas_build_and_issue_cmd,
389 .issue_dcmd = megasas_issue_dcmd,
393 * This is the end of set of functions & definitions specific
394 * to xscale (deviceid : 1064R, PERC5) controllers
398 * The following functions are defined for ppc (deviceid : 0x60)
403 * megasas_enable_intr_ppc - Enables interrupts
404 * @regs: MFI register set
407 megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs)
409 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
411 writel(~0x80000000, &(regs)->outbound_intr_mask);
413 /* Dummy readl to force pci flush */
414 readl(®s->outbound_intr_mask);
418 * megasas_disable_intr_ppc - Disable interrupt
419 * @regs: MFI register set
422 megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs)
424 u32 mask = 0xFFFFFFFF;
425 writel(mask, ®s->outbound_intr_mask);
426 /* Dummy readl to force pci flush */
427 readl(®s->outbound_intr_mask);
431 * megasas_read_fw_status_reg_ppc - returns the current FW status value
432 * @regs: MFI register set
435 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
437 return readl(&(regs)->outbound_scratch_pad);
441 * megasas_clear_interrupt_ppc - Check & clear interrupt
442 * @regs: MFI register set
445 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
447 u32 status, mfiStatus = 0;
450 * Check if it is our interrupt
452 status = readl(®s->outbound_intr_status);
454 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
455 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
457 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
458 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
461 * Clear the interrupt by writing back the same value
463 writel(status, ®s->outbound_doorbell_clear);
465 /* Dummy readl to force pci flush */
466 readl(®s->outbound_doorbell_clear);
472 * megasas_fire_cmd_ppc - Sends command to the FW
473 * @frame_phys_addr : Physical address of cmd
474 * @frame_count : Number of frames for the command
475 * @regs : MFI register set
478 megasas_fire_cmd_ppc(struct megasas_instance *instance,
479 dma_addr_t frame_phys_addr,
481 struct megasas_register_set __iomem *regs)
484 spin_lock_irqsave(&instance->hba_lock, flags);
485 writel((frame_phys_addr | (frame_count<<1))|1,
486 &(regs)->inbound_queue_port);
487 spin_unlock_irqrestore(&instance->hba_lock, flags);
491 * megasas_check_reset_ppc - For controller reset check
492 * @regs: MFI register set
495 megasas_check_reset_ppc(struct megasas_instance *instance,
496 struct megasas_register_set __iomem *regs)
498 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
504 static struct megasas_instance_template megasas_instance_template_ppc = {
506 .fire_cmd = megasas_fire_cmd_ppc,
507 .enable_intr = megasas_enable_intr_ppc,
508 .disable_intr = megasas_disable_intr_ppc,
509 .clear_intr = megasas_clear_intr_ppc,
510 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
511 .adp_reset = megasas_adp_reset_xscale,
512 .check_reset = megasas_check_reset_ppc,
513 .service_isr = megasas_isr,
514 .tasklet = megasas_complete_cmd_dpc,
515 .init_adapter = megasas_init_adapter_mfi,
516 .build_and_issue_cmd = megasas_build_and_issue_cmd,
517 .issue_dcmd = megasas_issue_dcmd,
521 * megasas_enable_intr_skinny - Enables interrupts
522 * @regs: MFI register set
525 megasas_enable_intr_skinny(struct megasas_register_set __iomem *regs)
527 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
529 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
531 /* Dummy readl to force pci flush */
532 readl(®s->outbound_intr_mask);
536 * megasas_disable_intr_skinny - Disables interrupt
537 * @regs: MFI register set
540 megasas_disable_intr_skinny(struct megasas_register_set __iomem *regs)
542 u32 mask = 0xFFFFFFFF;
543 writel(mask, ®s->outbound_intr_mask);
544 /* Dummy readl to force pci flush */
545 readl(®s->outbound_intr_mask);
549 * megasas_read_fw_status_reg_skinny - returns the current FW status value
550 * @regs: MFI register set
553 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
555 return readl(&(regs)->outbound_scratch_pad);
559 * megasas_clear_interrupt_skinny - Check & clear interrupt
560 * @regs: MFI register set
563 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
569 * Check if it is our interrupt
571 status = readl(®s->outbound_intr_status);
573 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
578 * Check if it is our interrupt
580 if ((megasas_read_fw_status_reg_gen2(regs) & MFI_STATE_MASK) ==
582 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
584 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
587 * Clear the interrupt by writing back the same value
589 writel(status, ®s->outbound_intr_status);
592 * dummy read to flush PCI
594 readl(®s->outbound_intr_status);
600 * megasas_fire_cmd_skinny - Sends command to the FW
601 * @frame_phys_addr : Physical address of cmd
602 * @frame_count : Number of frames for the command
603 * @regs : MFI register set
606 megasas_fire_cmd_skinny(struct megasas_instance *instance,
607 dma_addr_t frame_phys_addr,
609 struct megasas_register_set __iomem *regs)
612 spin_lock_irqsave(&instance->hba_lock, flags);
613 writel(0, &(regs)->inbound_high_queue_port);
614 writel((frame_phys_addr | (frame_count<<1))|1,
615 &(regs)->inbound_low_queue_port);
616 spin_unlock_irqrestore(&instance->hba_lock, flags);
620 * megasas_check_reset_skinny - For controller reset check
621 * @regs: MFI register set
624 megasas_check_reset_skinny(struct megasas_instance *instance,
625 struct megasas_register_set __iomem *regs)
627 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
633 static struct megasas_instance_template megasas_instance_template_skinny = {
635 .fire_cmd = megasas_fire_cmd_skinny,
636 .enable_intr = megasas_enable_intr_skinny,
637 .disable_intr = megasas_disable_intr_skinny,
638 .clear_intr = megasas_clear_intr_skinny,
639 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
640 .adp_reset = megasas_adp_reset_gen2,
641 .check_reset = megasas_check_reset_skinny,
642 .service_isr = megasas_isr,
643 .tasklet = megasas_complete_cmd_dpc,
644 .init_adapter = megasas_init_adapter_mfi,
645 .build_and_issue_cmd = megasas_build_and_issue_cmd,
646 .issue_dcmd = megasas_issue_dcmd,
651 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
656 * megasas_enable_intr_gen2 - Enables interrupts
657 * @regs: MFI register set
660 megasas_enable_intr_gen2(struct megasas_register_set __iomem *regs)
662 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
664 /* write ~0x00000005 (4 & 1) to the intr mask*/
665 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
667 /* Dummy readl to force pci flush */
668 readl(®s->outbound_intr_mask);
672 * megasas_disable_intr_gen2 - Disables interrupt
673 * @regs: MFI register set
676 megasas_disable_intr_gen2(struct megasas_register_set __iomem *regs)
678 u32 mask = 0xFFFFFFFF;
679 writel(mask, ®s->outbound_intr_mask);
680 /* Dummy readl to force pci flush */
681 readl(®s->outbound_intr_mask);
685 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
686 * @regs: MFI register set
689 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
691 return readl(&(regs)->outbound_scratch_pad);
695 * megasas_clear_interrupt_gen2 - Check & clear interrupt
696 * @regs: MFI register set
699 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
704 * Check if it is our interrupt
706 status = readl(®s->outbound_intr_status);
708 if (status & MFI_GEN2_ENABLE_INTERRUPT_MASK) {
709 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
711 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
712 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
716 * Clear the interrupt by writing back the same value
719 writel(status, ®s->outbound_doorbell_clear);
721 /* Dummy readl to force pci flush */
722 readl(®s->outbound_intr_status);
727 * megasas_fire_cmd_gen2 - Sends command to the FW
728 * @frame_phys_addr : Physical address of cmd
729 * @frame_count : Number of frames for the command
730 * @regs : MFI register set
733 megasas_fire_cmd_gen2(struct megasas_instance *instance,
734 dma_addr_t frame_phys_addr,
736 struct megasas_register_set __iomem *regs)
739 spin_lock_irqsave(&instance->hba_lock, flags);
740 writel((frame_phys_addr | (frame_count<<1))|1,
741 &(regs)->inbound_queue_port);
742 spin_unlock_irqrestore(&instance->hba_lock, flags);
746 * megasas_adp_reset_gen2 - For controller reset
747 * @regs: MFI register set
750 megasas_adp_reset_gen2(struct megasas_instance *instance,
751 struct megasas_register_set __iomem *reg_set)
755 u32 *seq_offset = ®_set->seq_offset;
756 u32 *hostdiag_offset = ®_set->host_diag;
758 if (instance->instancet == &megasas_instance_template_skinny) {
759 seq_offset = ®_set->fusion_seq_offset;
760 hostdiag_offset = ®_set->fusion_host_diag;
763 writel(0, seq_offset);
764 writel(4, seq_offset);
765 writel(0xb, seq_offset);
766 writel(2, seq_offset);
767 writel(7, seq_offset);
768 writel(0xd, seq_offset);
772 HostDiag = (u32)readl(hostdiag_offset);
774 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
776 HostDiag = (u32)readl(hostdiag_offset);
777 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
785 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
787 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
791 HostDiag = (u32)readl(hostdiag_offset);
792 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
794 HostDiag = (u32)readl(hostdiag_offset);
795 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
806 * megasas_check_reset_gen2 - For controller reset check
807 * @regs: MFI register set
810 megasas_check_reset_gen2(struct megasas_instance *instance,
811 struct megasas_register_set __iomem *regs)
813 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
820 static struct megasas_instance_template megasas_instance_template_gen2 = {
822 .fire_cmd = megasas_fire_cmd_gen2,
823 .enable_intr = megasas_enable_intr_gen2,
824 .disable_intr = megasas_disable_intr_gen2,
825 .clear_intr = megasas_clear_intr_gen2,
826 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
827 .adp_reset = megasas_adp_reset_gen2,
828 .check_reset = megasas_check_reset_gen2,
829 .service_isr = megasas_isr,
830 .tasklet = megasas_complete_cmd_dpc,
831 .init_adapter = megasas_init_adapter_mfi,
832 .build_and_issue_cmd = megasas_build_and_issue_cmd,
833 .issue_dcmd = megasas_issue_dcmd,
837 * This is the end of set of functions & definitions
838 * specific to gen2 (deviceid : 0x78, 0x79) controllers
842 * Template added for TB (Fusion)
844 extern struct megasas_instance_template megasas_instance_template_fusion;
847 * megasas_issue_polled - Issues a polling command
848 * @instance: Adapter soft state
849 * @cmd: Command packet to be issued
851 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
854 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
857 struct megasas_header *frame_hdr = &cmd->frame->hdr;
859 frame_hdr->cmd_status = 0xFF;
860 frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
863 * Issue the frame using inbound queue port
865 instance->instancet->issue_dcmd(instance, cmd);
868 * Wait for cmd_status to change
870 return wait_and_poll(instance, cmd);
874 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
875 * @instance: Adapter soft state
876 * @cmd: Command to be issued
878 * This function waits on an event for the command to be returned from ISR.
879 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
880 * Used to issue ioctl commands.
883 megasas_issue_blocked_cmd(struct megasas_instance *instance,
884 struct megasas_cmd *cmd)
886 cmd->cmd_status = ENODATA;
888 instance->instancet->issue_dcmd(instance, cmd);
890 wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA);
896 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
897 * @instance: Adapter soft state
898 * @cmd_to_abort: Previously issued cmd to be aborted
900 * MFI firmware can abort previously issued AEN command (automatic event
901 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
902 * cmd and waits for return status.
903 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
906 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
907 struct megasas_cmd *cmd_to_abort)
909 struct megasas_cmd *cmd;
910 struct megasas_abort_frame *abort_fr;
912 cmd = megasas_get_cmd(instance);
917 abort_fr = &cmd->frame->abort;
920 * Prepare and issue the abort frame
922 abort_fr->cmd = MFI_CMD_ABORT;
923 abort_fr->cmd_status = 0xFF;
925 abort_fr->abort_context = cmd_to_abort->index;
926 abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr;
927 abort_fr->abort_mfi_phys_addr_hi = 0;
930 cmd->cmd_status = 0xFF;
932 instance->instancet->issue_dcmd(instance, cmd);
935 * Wait for this cmd to complete
937 wait_event(instance->abort_cmd_wait_q, cmd->cmd_status != 0xFF);
940 megasas_return_cmd(instance, cmd);
945 * megasas_make_sgl32 - Prepares 32-bit SGL
946 * @instance: Adapter soft state
947 * @scp: SCSI command from the mid-layer
948 * @mfi_sgl: SGL to be filled in
950 * If successful, this function returns the number of SG elements. Otherwise,
954 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
955 union megasas_sgl *mfi_sgl)
959 struct scatterlist *os_sgl;
961 sge_count = scsi_dma_map(scp);
962 BUG_ON(sge_count < 0);
965 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
966 mfi_sgl->sge32[i].length = sg_dma_len(os_sgl);
967 mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl);
974 * megasas_make_sgl64 - Prepares 64-bit SGL
975 * @instance: Adapter soft state
976 * @scp: SCSI command from the mid-layer
977 * @mfi_sgl: SGL to be filled in
979 * If successful, this function returns the number of SG elements. Otherwise,
983 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
984 union megasas_sgl *mfi_sgl)
988 struct scatterlist *os_sgl;
990 sge_count = scsi_dma_map(scp);
991 BUG_ON(sge_count < 0);
994 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
995 mfi_sgl->sge64[i].length = sg_dma_len(os_sgl);
996 mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl);
1003 * megasas_make_sgl_skinny - Prepares IEEE SGL
1004 * @instance: Adapter soft state
1005 * @scp: SCSI command from the mid-layer
1006 * @mfi_sgl: SGL to be filled in
1008 * If successful, this function returns the number of SG elements. Otherwise,
1012 megasas_make_sgl_skinny(struct megasas_instance *instance,
1013 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1017 struct scatterlist *os_sgl;
1019 sge_count = scsi_dma_map(scp);
1022 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1023 mfi_sgl->sge_skinny[i].length = sg_dma_len(os_sgl);
1024 mfi_sgl->sge_skinny[i].phys_addr =
1025 sg_dma_address(os_sgl);
1026 mfi_sgl->sge_skinny[i].flag = 0;
1033 * megasas_get_frame_count - Computes the number of frames
1034 * @frame_type : type of frame- io or pthru frame
1035 * @sge_count : number of sg elements
1037 * Returns the number of frames required for numnber of sge's (sge_count)
1040 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1041 u8 sge_count, u8 frame_type)
1048 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1049 sizeof(struct megasas_sge32);
1051 if (instance->flag_ieee) {
1052 sge_sz = sizeof(struct megasas_sge_skinny);
1056 * Main frame can contain 2 SGEs for 64-bit SGLs and
1057 * 3 SGEs for 32-bit SGLs for ldio &
1058 * 1 SGEs for 64-bit SGLs and
1059 * 2 SGEs for 32-bit SGLs for pthru frame
1061 if (unlikely(frame_type == PTHRU_FRAME)) {
1062 if (instance->flag_ieee == 1) {
1063 num_cnt = sge_count - 1;
1064 } else if (IS_DMA64)
1065 num_cnt = sge_count - 1;
1067 num_cnt = sge_count - 2;
1069 if (instance->flag_ieee == 1) {
1070 num_cnt = sge_count - 1;
1071 } else if (IS_DMA64)
1072 num_cnt = sge_count - 2;
1074 num_cnt = sge_count - 3;
1078 sge_bytes = sge_sz * num_cnt;
1080 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1081 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1086 if (frame_count > 7)
1092 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1093 * @instance: Adapter soft state
1094 * @scp: SCSI command
1095 * @cmd: Command to be prepared in
1097 * This function prepares CDB commands. These are typcially pass-through
1098 * commands to the devices.
1101 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1102 struct megasas_cmd *cmd)
1107 struct megasas_pthru_frame *pthru;
1109 is_logical = MEGASAS_IS_LOGICAL(scp);
1110 device_id = MEGASAS_DEV_INDEX(instance, scp);
1111 pthru = (struct megasas_pthru_frame *)cmd->frame;
1113 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1114 flags = MFI_FRAME_DIR_WRITE;
1115 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1116 flags = MFI_FRAME_DIR_READ;
1117 else if (scp->sc_data_direction == PCI_DMA_NONE)
1118 flags = MFI_FRAME_DIR_NONE;
1120 if (instance->flag_ieee == 1) {
1121 flags |= MFI_FRAME_IEEE;
1125 * Prepare the DCDB frame
1127 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1128 pthru->cmd_status = 0x0;
1129 pthru->scsi_status = 0x0;
1130 pthru->target_id = device_id;
1131 pthru->lun = scp->device->lun;
1132 pthru->cdb_len = scp->cmd_len;
1135 pthru->flags = flags;
1136 pthru->data_xfer_len = scsi_bufflen(scp);
1138 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1141 * If the command is for the tape device, set the
1142 * pthru timeout to the os layer timeout value.
1144 if (scp->device->type == TYPE_TAPE) {
1145 if ((scp->request->timeout / HZ) > 0xFFFF)
1146 pthru->timeout = 0xFFFF;
1148 pthru->timeout = scp->request->timeout / HZ;
1154 if (instance->flag_ieee == 1) {
1155 pthru->flags |= MFI_FRAME_SGL64;
1156 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1158 } else if (IS_DMA64) {
1159 pthru->flags |= MFI_FRAME_SGL64;
1160 pthru->sge_count = megasas_make_sgl64(instance, scp,
1163 pthru->sge_count = megasas_make_sgl32(instance, scp,
1166 if (pthru->sge_count > instance->max_num_sge) {
1167 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
1173 * Sense info specific
1175 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1176 pthru->sense_buf_phys_addr_hi = 0;
1177 pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
1180 * Compute the total number of frames this command consumes. FW uses
1181 * this number to pull sufficient number of frames from host memory.
1183 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1186 return cmd->frame_count;
1190 * megasas_build_ldio - Prepares IOs to logical devices
1191 * @instance: Adapter soft state
1192 * @scp: SCSI command
1193 * @cmd: Command to be prepared
1195 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1198 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1199 struct megasas_cmd *cmd)
1202 u8 sc = scp->cmnd[0];
1204 struct megasas_io_frame *ldio;
1206 device_id = MEGASAS_DEV_INDEX(instance, scp);
1207 ldio = (struct megasas_io_frame *)cmd->frame;
1209 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1210 flags = MFI_FRAME_DIR_WRITE;
1211 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1212 flags = MFI_FRAME_DIR_READ;
1214 if (instance->flag_ieee == 1) {
1215 flags |= MFI_FRAME_IEEE;
1219 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1221 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1222 ldio->cmd_status = 0x0;
1223 ldio->scsi_status = 0x0;
1224 ldio->target_id = device_id;
1226 ldio->reserved_0 = 0;
1228 ldio->flags = flags;
1229 ldio->start_lba_hi = 0;
1230 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1233 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1235 if (scp->cmd_len == 6) {
1236 ldio->lba_count = (u32) scp->cmnd[4];
1237 ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) |
1238 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
1240 ldio->start_lba_lo &= 0x1FFFFF;
1244 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1246 else if (scp->cmd_len == 10) {
1247 ldio->lba_count = (u32) scp->cmnd[8] |
1248 ((u32) scp->cmnd[7] << 8);
1249 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1250 ((u32) scp->cmnd[3] << 16) |
1251 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1255 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1257 else if (scp->cmd_len == 12) {
1258 ldio->lba_count = ((u32) scp->cmnd[6] << 24) |
1259 ((u32) scp->cmnd[7] << 16) |
1260 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1262 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1263 ((u32) scp->cmnd[3] << 16) |
1264 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1268 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1270 else if (scp->cmd_len == 16) {
1271 ldio->lba_count = ((u32) scp->cmnd[10] << 24) |
1272 ((u32) scp->cmnd[11] << 16) |
1273 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
1275 ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) |
1276 ((u32) scp->cmnd[7] << 16) |
1277 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1279 ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) |
1280 ((u32) scp->cmnd[3] << 16) |
1281 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1288 if (instance->flag_ieee) {
1289 ldio->flags |= MFI_FRAME_SGL64;
1290 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1292 } else if (IS_DMA64) {
1293 ldio->flags |= MFI_FRAME_SGL64;
1294 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1296 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1298 if (ldio->sge_count > instance->max_num_sge) {
1299 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
1305 * Sense info specific
1307 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1308 ldio->sense_buf_phys_addr_hi = 0;
1309 ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
1312 * Compute the total number of frames this command consumes. FW uses
1313 * this number to pull sufficient number of frames from host memory.
1315 cmd->frame_count = megasas_get_frame_count(instance,
1316 ldio->sge_count, IO_FRAME);
1318 return cmd->frame_count;
1322 * megasas_is_ldio - Checks if the cmd is for logical drive
1323 * @scmd: SCSI command
1325 * Called by megasas_queue_command to find out if the command to be queued
1326 * is a logical drive command
1328 inline int megasas_is_ldio(struct scsi_cmnd *cmd)
1330 if (!MEGASAS_IS_LOGICAL(cmd))
1332 switch (cmd->cmnd[0]) {
1348 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1350 * @instance: Adapter soft state
1353 megasas_dump_pending_frames(struct megasas_instance *instance)
1355 struct megasas_cmd *cmd;
1357 union megasas_sgl *mfi_sgl;
1358 struct megasas_io_frame *ldio;
1359 struct megasas_pthru_frame *pthru;
1361 u32 max_cmd = instance->max_fw_cmds;
1363 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1364 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1366 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1368 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1370 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1371 for (i = 0; i < max_cmd; i++) {
1372 cmd = instance->cmd_list[i];
1375 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1376 if (megasas_is_ldio(cmd->scmd)){
1377 ldio = (struct megasas_io_frame *)cmd->frame;
1378 mfi_sgl = &ldio->sgl;
1379 sgcount = ldio->sge_count;
1380 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no, cmd->frame_count,ldio->cmd,ldio->target_id, ldio->start_lba_lo,ldio->start_lba_hi,ldio->sense_buf_phys_addr_lo,sgcount);
1383 pthru = (struct megasas_pthru_frame *) cmd->frame;
1384 mfi_sgl = &pthru->sgl;
1385 sgcount = pthru->sge_count;
1386 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no,cmd->frame_count,pthru->cmd,pthru->target_id,pthru->lun,pthru->cdb_len , pthru->data_xfer_len,pthru->sense_buf_phys_addr_lo,sgcount);
1388 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
1389 for (n = 0; n < sgcount; n++){
1391 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%08lx ",mfi_sgl->sge64[n].length , (unsigned long)mfi_sgl->sge64[n].phys_addr) ;
1393 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ;
1396 printk(KERN_ERR "\n");
1398 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1399 for (i = 0; i < max_cmd; i++) {
1401 cmd = instance->cmd_list[i];
1403 if(cmd->sync_cmd == 1){
1404 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1407 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
1411 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1412 struct scsi_cmnd *scmd)
1414 struct megasas_cmd *cmd;
1417 cmd = megasas_get_cmd(instance);
1419 return SCSI_MLQUEUE_HOST_BUSY;
1422 * Logical drive command
1424 if (megasas_is_ldio(scmd))
1425 frame_count = megasas_build_ldio(instance, scmd, cmd);
1427 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1430 goto out_return_cmd;
1433 scmd->SCp.ptr = (char *)cmd;
1436 * Issue the command to the FW
1438 atomic_inc(&instance->fw_outstanding);
1440 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1441 cmd->frame_count-1, instance->reg_set);
1443 * Check if we have pend cmds to be completed
1445 if (poll_mode_io && atomic_read(&instance->fw_outstanding))
1446 tasklet_schedule(&instance->isr_tasklet);
1450 megasas_return_cmd(instance, cmd);
1456 * megasas_queue_command - Queue entry point
1457 * @scmd: SCSI command to be queued
1458 * @done: Callback entry point
1461 megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
1463 struct megasas_instance *instance;
1464 unsigned long flags;
1466 instance = (struct megasas_instance *)
1467 scmd->device->host->hostdata;
1469 if (instance->issuepend_done == 0)
1470 return SCSI_MLQUEUE_HOST_BUSY;
1472 spin_lock_irqsave(&instance->hba_lock, flags);
1473 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1474 spin_unlock_irqrestore(&instance->hba_lock, flags);
1475 return SCSI_MLQUEUE_HOST_BUSY;
1478 spin_unlock_irqrestore(&instance->hba_lock, flags);
1480 scmd->scsi_done = done;
1483 if (MEGASAS_IS_LOGICAL(scmd) &&
1484 (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) {
1485 scmd->result = DID_BAD_TARGET << 16;
1490 * FW takes care of flush cache on its own for Virtual Disk.
1491 * No need to send it down for VD. For JBOD send SYNCHRONIZE_CACHE to FW.
1493 if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) && MEGASAS_IS_LOGICAL(scmd)) {
1494 scmd->result = DID_OK << 16;
1498 if (instance->instancet->build_and_issue_cmd(instance, scmd)) {
1499 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n");
1500 return SCSI_MLQUEUE_HOST_BUSY;
1510 static DEF_SCSI_QCMD(megasas_queue_command)
1512 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1516 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1518 if ((megasas_mgmt_info.instance[i]) &&
1519 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1520 return megasas_mgmt_info.instance[i];
1526 static int megasas_slave_configure(struct scsi_device *sdev)
1529 struct megasas_instance *instance ;
1531 instance = megasas_lookup_instance(sdev->host->host_no);
1534 * Don't export physical disk devices to the disk driver.
1536 * FIXME: Currently we don't export them to the midlayer at all.
1537 * That will be fixed once LSI engineers have audited the
1538 * firmware for possible issues.
1540 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1541 sdev->type == TYPE_DISK) {
1542 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1544 if (instance->pd_list[pd_index].driveState ==
1545 MR_PD_STATE_SYSTEM) {
1546 blk_queue_rq_timeout(sdev->request_queue,
1547 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1554 * The RAID firmware may require extended timeouts.
1556 blk_queue_rq_timeout(sdev->request_queue,
1557 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1561 static int megasas_slave_alloc(struct scsi_device *sdev)
1564 struct megasas_instance *instance ;
1565 instance = megasas_lookup_instance(sdev->host->host_no);
1566 if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) &&
1567 (sdev->type == TYPE_DISK)) {
1569 * Open the OS scan to the SYSTEM PD
1572 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1574 if ((instance->pd_list[pd_index].driveState ==
1575 MR_PD_STATE_SYSTEM) &&
1576 (instance->pd_list[pd_index].driveType ==
1585 void megaraid_sas_kill_hba(struct megasas_instance *instance)
1587 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1588 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1589 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
1590 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) {
1591 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
1593 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell);
1598 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1599 * restored to max value
1600 * @instance: Adapter soft state
1604 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1606 unsigned long flags;
1607 if (instance->flag & MEGASAS_FW_BUSY
1608 && time_after(jiffies, instance->last_time + 5 * HZ)
1609 && atomic_read(&instance->fw_outstanding) < 17) {
1611 spin_lock_irqsave(instance->host->host_lock, flags);
1612 instance->flag &= ~MEGASAS_FW_BUSY;
1613 if ((instance->pdev->device ==
1614 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1615 (instance->pdev->device ==
1616 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1617 instance->host->can_queue =
1618 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
1620 instance->host->can_queue =
1621 instance->max_fw_cmds - MEGASAS_INT_CMDS;
1623 spin_unlock_irqrestore(instance->host->host_lock, flags);
1628 * megasas_complete_cmd_dpc - Returns FW's controller structure
1629 * @instance_addr: Address of adapter soft state
1631 * Tasklet to complete cmds
1633 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1638 struct megasas_cmd *cmd;
1639 struct megasas_instance *instance =
1640 (struct megasas_instance *)instance_addr;
1641 unsigned long flags;
1643 /* If we have already declared adapter dead, donot complete cmds */
1644 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
1647 spin_lock_irqsave(&instance->completion_lock, flags);
1649 producer = *instance->producer;
1650 consumer = *instance->consumer;
1652 while (consumer != producer) {
1653 context = instance->reply_queue[consumer];
1654 if (context >= instance->max_fw_cmds) {
1655 printk(KERN_ERR "Unexpected context value %x\n",
1660 cmd = instance->cmd_list[context];
1662 megasas_complete_cmd(instance, cmd, DID_OK);
1665 if (consumer == (instance->max_fw_cmds + 1)) {
1670 *instance->consumer = producer;
1672 spin_unlock_irqrestore(&instance->completion_lock, flags);
1675 * Check if we can restore can_queue
1677 megasas_check_and_restore_queue_depth(instance);
1681 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
1684 process_fw_state_change_wq(struct work_struct *work);
1686 void megasas_do_ocr(struct megasas_instance *instance)
1688 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
1689 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
1690 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
1691 *instance->consumer = MEGASAS_ADPRESET_INPROG_SIGN;
1693 instance->instancet->disable_intr(instance->reg_set);
1694 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
1695 instance->issuepend_done = 0;
1697 atomic_set(&instance->fw_outstanding, 0);
1698 megasas_internal_reset_defer_cmds(instance);
1699 process_fw_state_change_wq(&instance->work_init);
1703 * megasas_wait_for_outstanding - Wait for all outstanding cmds
1704 * @instance: Adapter soft state
1706 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
1707 * complete all its outstanding commands. Returns error if one or more IOs
1708 * are pending after this time period. It also marks the controller dead.
1710 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
1714 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
1716 unsigned long flags;
1717 struct list_head clist_local;
1718 struct megasas_cmd *reset_cmd;
1720 u8 kill_adapter_flag;
1722 spin_lock_irqsave(&instance->hba_lock, flags);
1723 adprecovery = instance->adprecovery;
1724 spin_unlock_irqrestore(&instance->hba_lock, flags);
1726 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1728 INIT_LIST_HEAD(&clist_local);
1729 spin_lock_irqsave(&instance->hba_lock, flags);
1730 list_splice_init(&instance->internal_reset_pending_q,
1732 spin_unlock_irqrestore(&instance->hba_lock, flags);
1734 printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
1735 for (i = 0; i < wait_time; i++) {
1737 spin_lock_irqsave(&instance->hba_lock, flags);
1738 adprecovery = instance->adprecovery;
1739 spin_unlock_irqrestore(&instance->hba_lock, flags);
1740 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
1744 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1745 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
1746 spin_lock_irqsave(&instance->hba_lock, flags);
1747 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1748 spin_unlock_irqrestore(&instance->hba_lock, flags);
1753 while (!list_empty(&clist_local)) {
1754 reset_cmd = list_entry((&clist_local)->next,
1755 struct megasas_cmd, list);
1756 list_del_init(&reset_cmd->list);
1757 if (reset_cmd->scmd) {
1758 reset_cmd->scmd->result = DID_RESET << 16;
1759 printk(KERN_NOTICE "%d:%p reset [%02x]\n",
1760 reset_index, reset_cmd,
1761 reset_cmd->scmd->cmnd[0]);
1763 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
1764 megasas_return_cmd(instance, reset_cmd);
1765 } else if (reset_cmd->sync_cmd) {
1766 printk(KERN_NOTICE "megasas:%p synch cmds"
1770 reset_cmd->cmd_status = ENODATA;
1771 instance->instancet->fire_cmd(instance,
1772 reset_cmd->frame_phys_addr,
1773 0, instance->reg_set);
1775 printk(KERN_NOTICE "megasas: %p unexpected"
1785 for (i = 0; i < wait_time; i++) {
1787 int outstanding = atomic_read(&instance->fw_outstanding);
1792 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
1793 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
1794 "commands to complete\n",i,outstanding);
1796 * Call cmd completion routine. Cmd to be
1797 * be completed directly without depending on isr.
1799 megasas_complete_cmd_dpc((unsigned long)instance);
1806 kill_adapter_flag = 0;
1808 fw_state = instance->instancet->read_fw_status_reg(
1809 instance->reg_set) & MFI_STATE_MASK;
1810 if ((fw_state == MFI_STATE_FAULT) &&
1811 (instance->disableOnlineCtrlReset == 0)) {
1813 kill_adapter_flag = 2;
1816 megasas_do_ocr(instance);
1817 kill_adapter_flag = 1;
1819 /* wait for 1 secs to let FW finish the pending cmds */
1825 if (atomic_read(&instance->fw_outstanding) &&
1826 !kill_adapter_flag) {
1827 if (instance->disableOnlineCtrlReset == 0) {
1829 megasas_do_ocr(instance);
1831 /* wait for 5 secs to let FW finish the pending cmds */
1832 for (i = 0; i < wait_time; i++) {
1834 atomic_read(&instance->fw_outstanding);
1842 if (atomic_read(&instance->fw_outstanding) ||
1843 (kill_adapter_flag == 2)) {
1844 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
1846 * Send signal to FW to stop processing any pending cmds.
1847 * The controller will be taken offline by the OS now.
1849 if ((instance->pdev->device ==
1850 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1851 (instance->pdev->device ==
1852 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1853 writel(MFI_STOP_ADP,
1854 &instance->reg_set->doorbell);
1856 writel(MFI_STOP_ADP,
1857 &instance->reg_set->inbound_doorbell);
1859 megasas_dump_pending_frames(instance);
1860 spin_lock_irqsave(&instance->hba_lock, flags);
1861 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1862 spin_unlock_irqrestore(&instance->hba_lock, flags);
1866 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
1872 * megasas_generic_reset - Generic reset routine
1873 * @scmd: Mid-layer SCSI command
1875 * This routine implements a generic reset handler for device, bus and host
1876 * reset requests. Device, bus and host specific reset handlers can use this
1877 * function after they do their specific tasks.
1879 static int megasas_generic_reset(struct scsi_cmnd *scmd)
1882 struct megasas_instance *instance;
1884 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1886 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
1887 scmd->cmnd[0], scmd->retries);
1889 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1890 printk(KERN_ERR "megasas: cannot recover from previous reset "
1895 ret_val = megasas_wait_for_outstanding(instance);
1896 if (ret_val == SUCCESS)
1897 printk(KERN_NOTICE "megasas: reset successful \n");
1899 printk(KERN_ERR "megasas: failed to do reset\n");
1905 * megasas_reset_timer - quiesce the adapter if required
1908 * Sets the FW busy flag and reduces the host->can_queue if the
1909 * cmd has not been completed within the timeout period.
1912 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
1914 struct megasas_instance *instance;
1915 unsigned long flags;
1917 if (time_after(jiffies, scmd->jiffies_at_alloc +
1918 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
1919 return BLK_EH_NOT_HANDLED;
1922 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1923 if (!(instance->flag & MEGASAS_FW_BUSY)) {
1924 /* FW is busy, throttle IO */
1925 spin_lock_irqsave(instance->host->host_lock, flags);
1927 instance->host->can_queue = 16;
1928 instance->last_time = jiffies;
1929 instance->flag |= MEGASAS_FW_BUSY;
1931 spin_unlock_irqrestore(instance->host->host_lock, flags);
1933 return BLK_EH_RESET_TIMER;
1937 * megasas_reset_device - Device reset handler entry point
1939 static int megasas_reset_device(struct scsi_cmnd *scmd)
1944 * First wait for all commands to complete
1946 ret = megasas_generic_reset(scmd);
1952 * megasas_reset_bus_host - Bus & host reset handler entry point
1954 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
1957 struct megasas_instance *instance;
1958 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1961 * First wait for all commands to complete
1963 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
1964 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER))
1965 ret = megasas_reset_fusion(scmd->device->host);
1967 ret = megasas_generic_reset(scmd);
1973 * megasas_bios_param - Returns disk geometry for a disk
1974 * @sdev: device handle
1975 * @bdev: block device
1976 * @capacity: drive capacity
1977 * @geom: geometry parameters
1980 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
1981 sector_t capacity, int geom[])
1987 /* Default heads (64) & sectors (32) */
1991 tmp = heads * sectors;
1992 cylinders = capacity;
1994 sector_div(cylinders, tmp);
1997 * Handle extended translation size for logical drives > 1Gb
2000 if (capacity >= 0x200000) {
2003 tmp = heads*sectors;
2004 cylinders = capacity;
2005 sector_div(cylinders, tmp);
2010 geom[2] = cylinders;
2015 static void megasas_aen_polling(struct work_struct *work);
2018 * megasas_service_aen - Processes an event notification
2019 * @instance: Adapter soft state
2020 * @cmd: AEN command completed by the ISR
2022 * For AEN, driver sends a command down to FW that is held by the FW till an
2023 * event occurs. When an event of interest occurs, FW completes the command
2024 * that it was previously holding.
2026 * This routines sends SIGIO signal to processes that have registered with the
2030 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2032 unsigned long flags;
2034 * Don't signal app if it is just an aborted previously registered aen
2036 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2037 spin_lock_irqsave(&poll_aen_lock, flags);
2038 megasas_poll_wait_aen = 1;
2039 spin_unlock_irqrestore(&poll_aen_lock, flags);
2040 wake_up(&megasas_poll_wait);
2041 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2046 instance->aen_cmd = NULL;
2047 megasas_return_cmd(instance, cmd);
2049 if ((instance->unload == 0) &&
2050 ((instance->issuepend_done == 1))) {
2051 struct megasas_aen_event *ev;
2052 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2054 printk(KERN_ERR "megasas_service_aen: out of memory\n");
2056 ev->instance = instance;
2058 INIT_WORK(&ev->hotplug_work, megasas_aen_polling);
2059 schedule_delayed_work(
2060 (struct delayed_work *)&ev->hotplug_work, 0);
2065 static int megasas_change_queue_depth(struct scsi_device *sdev,
2066 int queue_depth, int reason)
2068 if (reason != SCSI_QDEPTH_DEFAULT)
2071 if (queue_depth > sdev->host->can_queue)
2072 queue_depth = sdev->host->can_queue;
2073 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev),
2080 * Scsi host template for megaraid_sas driver
2082 static struct scsi_host_template megasas_template = {
2084 .module = THIS_MODULE,
2085 .name = "LSI SAS based MegaRAID driver",
2086 .proc_name = "megaraid_sas",
2087 .slave_configure = megasas_slave_configure,
2088 .slave_alloc = megasas_slave_alloc,
2089 .queuecommand = megasas_queue_command,
2090 .eh_device_reset_handler = megasas_reset_device,
2091 .eh_bus_reset_handler = megasas_reset_bus_host,
2092 .eh_host_reset_handler = megasas_reset_bus_host,
2093 .eh_timed_out = megasas_reset_timer,
2094 .bios_param = megasas_bios_param,
2095 .use_clustering = ENABLE_CLUSTERING,
2096 .change_queue_depth = megasas_change_queue_depth,
2100 * megasas_complete_int_cmd - Completes an internal command
2101 * @instance: Adapter soft state
2102 * @cmd: Command to be completed
2104 * The megasas_issue_blocked_cmd() function waits for a command to complete
2105 * after it issues a command. This function wakes up that waiting routine by
2106 * calling wake_up() on the wait queue.
2109 megasas_complete_int_cmd(struct megasas_instance *instance,
2110 struct megasas_cmd *cmd)
2112 cmd->cmd_status = cmd->frame->io.cmd_status;
2114 if (cmd->cmd_status == ENODATA) {
2115 cmd->cmd_status = 0;
2117 wake_up(&instance->int_cmd_wait_q);
2121 * megasas_complete_abort - Completes aborting a command
2122 * @instance: Adapter soft state
2123 * @cmd: Cmd that was issued to abort another cmd
2125 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2126 * after it issues an abort on a previously issued command. This function
2127 * wakes up all functions waiting on the same wait queue.
2130 megasas_complete_abort(struct megasas_instance *instance,
2131 struct megasas_cmd *cmd)
2133 if (cmd->sync_cmd) {
2135 cmd->cmd_status = 0;
2136 wake_up(&instance->abort_cmd_wait_q);
2143 * megasas_complete_cmd - Completes a command
2144 * @instance: Adapter soft state
2145 * @cmd: Command to be completed
2146 * @alt_status: If non-zero, use this value as status to
2147 * SCSI mid-layer instead of the value returned
2148 * by the FW. This should be used if caller wants
2149 * an alternate status (as in the case of aborted
2153 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2157 struct megasas_header *hdr = &cmd->frame->hdr;
2158 unsigned long flags;
2159 struct fusion_context *fusion = instance->ctrl_context;
2161 /* flag for the retry reset */
2162 cmd->retry_for_fw_reset = 0;
2165 cmd->scmd->SCp.ptr = NULL;
2168 case MFI_CMD_INVALID:
2169 /* Some older 1068 controller FW may keep a pended
2170 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
2171 when booting the kdump kernel. Ignore this command to
2172 prevent a kernel panic on shutdown of the kdump kernel. */
2173 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command "
2175 printk(KERN_WARNING "megaraid_sas: If you have a controller "
2176 "other than PERC5, please upgrade your firmware.\n");
2178 case MFI_CMD_PD_SCSI_IO:
2179 case MFI_CMD_LD_SCSI_IO:
2182 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2183 * issued either through an IO path or an IOCTL path. If it
2184 * was via IOCTL, we will send it to internal completion.
2186 if (cmd->sync_cmd) {
2188 megasas_complete_int_cmd(instance, cmd);
2192 case MFI_CMD_LD_READ:
2193 case MFI_CMD_LD_WRITE:
2196 cmd->scmd->result = alt_status << 16;
2202 atomic_dec(&instance->fw_outstanding);
2204 scsi_dma_unmap(cmd->scmd);
2205 cmd->scmd->scsi_done(cmd->scmd);
2206 megasas_return_cmd(instance, cmd);
2211 switch (hdr->cmd_status) {
2214 cmd->scmd->result = DID_OK << 16;
2217 case MFI_STAT_SCSI_IO_FAILED:
2218 case MFI_STAT_LD_INIT_IN_PROGRESS:
2220 (DID_ERROR << 16) | hdr->scsi_status;
2223 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2225 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
2227 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
2228 memset(cmd->scmd->sense_buffer, 0,
2229 SCSI_SENSE_BUFFERSIZE);
2230 memcpy(cmd->scmd->sense_buffer, cmd->sense,
2233 cmd->scmd->result |= DRIVER_SENSE << 24;
2238 case MFI_STAT_LD_OFFLINE:
2239 case MFI_STAT_DEVICE_NOT_FOUND:
2240 cmd->scmd->result = DID_BAD_TARGET << 16;
2244 printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
2246 cmd->scmd->result = DID_ERROR << 16;
2250 atomic_dec(&instance->fw_outstanding);
2252 scsi_dma_unmap(cmd->scmd);
2253 cmd->scmd->scsi_done(cmd->scmd);
2254 megasas_return_cmd(instance, cmd);
2261 /* Check for LD map update */
2262 if ((cmd->frame->dcmd.opcode == MR_DCMD_LD_MAP_GET_INFO) &&
2263 (cmd->frame->dcmd.mbox.b[1] == 1)) {
2264 spin_lock_irqsave(instance->host->host_lock, flags);
2265 if (cmd->frame->hdr.cmd_status != 0) {
2266 if (cmd->frame->hdr.cmd_status !=
2268 printk(KERN_WARNING "megasas: map sync"
2269 "failed, status = 0x%x.\n",
2270 cmd->frame->hdr.cmd_status);
2272 megasas_return_cmd(instance, cmd);
2273 spin_unlock_irqrestore(
2274 instance->host->host_lock,
2280 megasas_return_cmd(instance, cmd);
2281 if (MR_ValidateMapInfo(
2282 fusion->ld_map[(instance->map_id & 1)],
2283 fusion->load_balance_info))
2284 fusion->fast_path_io = 1;
2286 fusion->fast_path_io = 0;
2287 megasas_sync_map_info(instance);
2288 spin_unlock_irqrestore(instance->host->host_lock,
2292 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
2293 cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) {
2294 spin_lock_irqsave(&poll_aen_lock, flags);
2295 megasas_poll_wait_aen = 0;
2296 spin_unlock_irqrestore(&poll_aen_lock, flags);
2300 * See if got an event notification
2302 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT)
2303 megasas_service_aen(instance, cmd);
2305 megasas_complete_int_cmd(instance, cmd);
2311 * Cmd issued to abort another cmd returned
2313 megasas_complete_abort(instance, cmd);
2317 printk("megasas: Unknown command completed! [0x%X]\n",
2324 * megasas_issue_pending_cmds_again - issue all pending cmds
2325 * in FW again because of the fw reset
2326 * @instance: Adapter soft state
2329 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
2331 struct megasas_cmd *cmd;
2332 struct list_head clist_local;
2333 union megasas_evt_class_locale class_locale;
2334 unsigned long flags;
2337 INIT_LIST_HEAD(&clist_local);
2338 spin_lock_irqsave(&instance->hba_lock, flags);
2339 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
2340 spin_unlock_irqrestore(&instance->hba_lock, flags);
2342 while (!list_empty(&clist_local)) {
2343 cmd = list_entry((&clist_local)->next,
2344 struct megasas_cmd, list);
2345 list_del_init(&cmd->list);
2347 if (cmd->sync_cmd || cmd->scmd) {
2348 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
2349 "detected to be pending while HBA reset.\n",
2350 cmd, cmd->scmd, cmd->sync_cmd);
2352 cmd->retry_for_fw_reset++;
2354 if (cmd->retry_for_fw_reset == 3) {
2355 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
2356 "was tried multiple times during reset."
2357 "Shutting down the HBA\n",
2358 cmd, cmd->scmd, cmd->sync_cmd);
2359 megaraid_sas_kill_hba(instance);
2361 instance->adprecovery =
2362 MEGASAS_HW_CRITICAL_ERROR;
2367 if (cmd->sync_cmd == 1) {
2369 printk(KERN_NOTICE "megaraid_sas: unexpected"
2370 "cmd attached to internal command!\n");
2372 printk(KERN_NOTICE "megasas: %p synchronous cmd"
2373 "on the internal reset queue,"
2374 "issue it again.\n", cmd);
2375 cmd->cmd_status = ENODATA;
2376 instance->instancet->fire_cmd(instance,
2377 cmd->frame_phys_addr ,
2378 0, instance->reg_set);
2379 } else if (cmd->scmd) {
2380 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]"
2381 "detected on the internal queue, issue again.\n",
2382 cmd, cmd->scmd->cmnd[0]);
2384 atomic_inc(&instance->fw_outstanding);
2385 instance->instancet->fire_cmd(instance,
2386 cmd->frame_phys_addr,
2387 cmd->frame_count-1, instance->reg_set);
2389 printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
2390 "internal reset defer list while re-issue!!\n",
2395 if (instance->aen_cmd) {
2396 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
2397 megasas_return_cmd(instance, instance->aen_cmd);
2399 instance->aen_cmd = NULL;
2403 * Initiate AEN (Asynchronous Event Notification)
2405 seq_num = instance->last_seq_num;
2406 class_locale.members.reserved = 0;
2407 class_locale.members.locale = MR_EVT_LOCALE_ALL;
2408 class_locale.members.class = MR_EVT_CLASS_DEBUG;
2410 megasas_register_aen(instance, seq_num, class_locale.word);
2414 * Move the internal reset pending commands to a deferred queue.
2416 * We move the commands pending at internal reset time to a
2417 * pending queue. This queue would be flushed after successful
2418 * completion of the internal reset sequence. if the internal reset
2419 * did not complete in time, the kernel reset handler would flush
2423 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
2425 struct megasas_cmd *cmd;
2427 u32 max_cmd = instance->max_fw_cmds;
2429 unsigned long flags;
2432 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
2433 for (i = 0; i < max_cmd; i++) {
2434 cmd = instance->cmd_list[i];
2435 if (cmd->sync_cmd == 1 || cmd->scmd) {
2436 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
2437 "on the defer queue as internal\n",
2438 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
2440 if (!list_empty(&cmd->list)) {
2441 printk(KERN_NOTICE "megaraid_sas: ERROR while"
2442 " moving this cmd:%p, %d %p, it was"
2443 "discovered on some list?\n",
2444 cmd, cmd->sync_cmd, cmd->scmd);
2446 list_del_init(&cmd->list);
2449 list_add_tail(&cmd->list,
2450 &instance->internal_reset_pending_q);
2453 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
2458 process_fw_state_change_wq(struct work_struct *work)
2460 struct megasas_instance *instance =
2461 container_of(work, struct megasas_instance, work_init);
2463 unsigned long flags;
2465 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
2466 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
2467 instance->adprecovery);
2471 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
2472 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
2473 "state, restarting it...\n");
2475 instance->instancet->disable_intr(instance->reg_set);
2476 atomic_set(&instance->fw_outstanding, 0);
2478 atomic_set(&instance->fw_reset_no_pci_access, 1);
2479 instance->instancet->adp_reset(instance, instance->reg_set);
2480 atomic_set(&instance->fw_reset_no_pci_access, 0 );
2482 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
2483 "initiating next stage...\n");
2485 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
2486 "state 2 starting...\n");
2488 /*waitting for about 20 second before start the second init*/
2489 for (wait = 0; wait < 30; wait++) {
2493 if (megasas_transition_to_ready(instance, 1)) {
2494 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
2496 megaraid_sas_kill_hba(instance);
2497 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2501 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2502 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2503 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
2505 *instance->consumer = *instance->producer;
2507 *instance->consumer = 0;
2508 *instance->producer = 0;
2511 megasas_issue_init_mfi(instance);
2513 spin_lock_irqsave(&instance->hba_lock, flags);
2514 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2515 spin_unlock_irqrestore(&instance->hba_lock, flags);
2516 instance->instancet->enable_intr(instance->reg_set);
2518 megasas_issue_pending_cmds_again(instance);
2519 instance->issuepend_done = 1;
2525 * megasas_deplete_reply_queue - Processes all completed commands
2526 * @instance: Adapter soft state
2527 * @alt_status: Alternate status to be returned to
2528 * SCSI mid-layer instead of the status
2529 * returned by the FW
2530 * Note: this must be called with hba lock held
2533 megasas_deplete_reply_queue(struct megasas_instance *instance,
2539 if ((mfiStatus = instance->instancet->check_reset(instance,
2540 instance->reg_set)) == 1) {
2544 if ((mfiStatus = instance->instancet->clear_intr(
2547 /* Hardware may not set outbound_intr_status in MSI-X mode */
2548 if (!instance->msix_vectors)
2552 instance->mfiStatus = mfiStatus;
2554 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
2555 fw_state = instance->instancet->read_fw_status_reg(
2556 instance->reg_set) & MFI_STATE_MASK;
2558 if (fw_state != MFI_STATE_FAULT) {
2559 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
2563 if ((fw_state == MFI_STATE_FAULT) &&
2564 (instance->disableOnlineCtrlReset == 0)) {
2565 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
2567 if ((instance->pdev->device ==
2568 PCI_DEVICE_ID_LSI_SAS1064R) ||
2569 (instance->pdev->device ==
2570 PCI_DEVICE_ID_DELL_PERC5) ||
2571 (instance->pdev->device ==
2572 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2574 *instance->consumer =
2575 MEGASAS_ADPRESET_INPROG_SIGN;
2579 instance->instancet->disable_intr(instance->reg_set);
2580 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2581 instance->issuepend_done = 0;
2583 atomic_set(&instance->fw_outstanding, 0);
2584 megasas_internal_reset_defer_cmds(instance);
2586 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
2587 fw_state, instance->adprecovery);
2589 schedule_work(&instance->work_init);
2593 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
2594 fw_state, instance->disableOnlineCtrlReset);
2598 tasklet_schedule(&instance->isr_tasklet);
2602 * megasas_isr - isr entry point
2604 static irqreturn_t megasas_isr(int irq, void *devp)
2606 struct megasas_irq_context *irq_context = devp;
2607 struct megasas_instance *instance = irq_context->instance;
2608 unsigned long flags;
2611 if (atomic_read(&instance->fw_reset_no_pci_access))
2614 spin_lock_irqsave(&instance->hba_lock, flags);
2615 rc = megasas_deplete_reply_queue(instance, DID_OK);
2616 spin_unlock_irqrestore(&instance->hba_lock, flags);
2622 * megasas_transition_to_ready - Move the FW to READY state
2623 * @instance: Adapter soft state
2625 * During the initialization, FW passes can potentially be in any one of
2626 * several possible states. If the FW in operational, waiting-for-handshake
2627 * states, driver must take steps to bring it to ready state. Otherwise, it
2628 * has to wait for the ready state.
2631 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
2637 u32 abs_state, curr_abs_state;
2639 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2641 if (fw_state != MFI_STATE_READY)
2642 printk(KERN_INFO "megasas: Waiting for FW to come to ready"
2645 while (fw_state != MFI_STATE_READY) {
2648 instance->instancet->read_fw_status_reg(instance->reg_set);
2652 case MFI_STATE_FAULT:
2653 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
2655 max_wait = MEGASAS_RESET_WAIT_TIME;
2656 cur_state = MFI_STATE_FAULT;
2661 case MFI_STATE_WAIT_HANDSHAKE:
2663 * Set the CLR bit in inbound doorbell
2665 if ((instance->pdev->device ==
2666 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2667 (instance->pdev->device ==
2668 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2669 (instance->pdev->device ==
2670 PCI_DEVICE_ID_LSI_FUSION) ||
2671 (instance->pdev->device ==
2672 PCI_DEVICE_ID_LSI_INVADER)) {
2674 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2675 &instance->reg_set->doorbell);
2678 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2679 &instance->reg_set->inbound_doorbell);
2682 max_wait = MEGASAS_RESET_WAIT_TIME;
2683 cur_state = MFI_STATE_WAIT_HANDSHAKE;
2686 case MFI_STATE_BOOT_MESSAGE_PENDING:
2687 if ((instance->pdev->device ==
2688 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2689 (instance->pdev->device ==
2690 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2691 (instance->pdev->device ==
2692 PCI_DEVICE_ID_LSI_FUSION) ||
2693 (instance->pdev->device ==
2694 PCI_DEVICE_ID_LSI_INVADER)) {
2695 writel(MFI_INIT_HOTPLUG,
2696 &instance->reg_set->doorbell);
2698 writel(MFI_INIT_HOTPLUG,
2699 &instance->reg_set->inbound_doorbell);
2701 max_wait = MEGASAS_RESET_WAIT_TIME;
2702 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
2705 case MFI_STATE_OPERATIONAL:
2707 * Bring it to READY state; assuming max wait 10 secs
2709 instance->instancet->disable_intr(instance->reg_set);
2710 if ((instance->pdev->device ==
2711 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2712 (instance->pdev->device ==
2713 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2714 (instance->pdev->device
2715 == PCI_DEVICE_ID_LSI_FUSION) ||
2716 (instance->pdev->device
2717 == PCI_DEVICE_ID_LSI_INVADER)) {
2718 writel(MFI_RESET_FLAGS,
2719 &instance->reg_set->doorbell);
2720 if ((instance->pdev->device ==
2721 PCI_DEVICE_ID_LSI_FUSION) ||
2722 (instance->pdev->device ==
2723 PCI_DEVICE_ID_LSI_INVADER)) {
2724 for (i = 0; i < (10 * 1000); i += 20) {
2735 writel(MFI_RESET_FLAGS,
2736 &instance->reg_set->inbound_doorbell);
2738 max_wait = MEGASAS_RESET_WAIT_TIME;
2739 cur_state = MFI_STATE_OPERATIONAL;
2742 case MFI_STATE_UNDEFINED:
2744 * This state should not last for more than 2 seconds
2746 max_wait = MEGASAS_RESET_WAIT_TIME;
2747 cur_state = MFI_STATE_UNDEFINED;
2750 case MFI_STATE_BB_INIT:
2751 max_wait = MEGASAS_RESET_WAIT_TIME;
2752 cur_state = MFI_STATE_BB_INIT;
2755 case MFI_STATE_FW_INIT:
2756 max_wait = MEGASAS_RESET_WAIT_TIME;
2757 cur_state = MFI_STATE_FW_INIT;
2760 case MFI_STATE_FW_INIT_2:
2761 max_wait = MEGASAS_RESET_WAIT_TIME;
2762 cur_state = MFI_STATE_FW_INIT_2;
2765 case MFI_STATE_DEVICE_SCAN:
2766 max_wait = MEGASAS_RESET_WAIT_TIME;
2767 cur_state = MFI_STATE_DEVICE_SCAN;
2770 case MFI_STATE_FLUSH_CACHE:
2771 max_wait = MEGASAS_RESET_WAIT_TIME;
2772 cur_state = MFI_STATE_FLUSH_CACHE;
2776 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
2782 * The cur_state should not last for more than max_wait secs
2784 for (i = 0; i < (max_wait * 1000); i++) {
2785 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) &
2788 instance->instancet->read_fw_status_reg(instance->reg_set);
2790 if (abs_state == curr_abs_state) {
2797 * Return error if fw_state hasn't changed after max_wait
2799 if (curr_abs_state == abs_state) {
2800 printk(KERN_DEBUG "FW state [%d] hasn't changed "
2801 "in %d secs\n", fw_state, max_wait);
2805 printk(KERN_INFO "megasas: FW now in Ready state\n");
2811 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
2812 * @instance: Adapter soft state
2814 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
2817 u32 max_cmd = instance->max_mfi_cmds;
2818 struct megasas_cmd *cmd;
2820 if (!instance->frame_dma_pool)
2824 * Return all frames to pool
2826 for (i = 0; i < max_cmd; i++) {
2828 cmd = instance->cmd_list[i];
2831 pci_pool_free(instance->frame_dma_pool, cmd->frame,
2832 cmd->frame_phys_addr);
2835 pci_pool_free(instance->sense_dma_pool, cmd->sense,
2836 cmd->sense_phys_addr);
2840 * Now destroy the pool itself
2842 pci_pool_destroy(instance->frame_dma_pool);
2843 pci_pool_destroy(instance->sense_dma_pool);
2845 instance->frame_dma_pool = NULL;
2846 instance->sense_dma_pool = NULL;
2850 * megasas_create_frame_pool - Creates DMA pool for cmd frames
2851 * @instance: Adapter soft state
2853 * Each command packet has an embedded DMA memory buffer that is used for
2854 * filling MFI frame and the SG list that immediately follows the frame. This
2855 * function creates those DMA memory buffers for each command packet by using
2856 * PCI pool facility.
2858 static int megasas_create_frame_pool(struct megasas_instance *instance)
2866 struct megasas_cmd *cmd;
2868 max_cmd = instance->max_mfi_cmds;
2871 * Size of our frame is 64 bytes for MFI frame, followed by max SG
2872 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
2874 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
2875 sizeof(struct megasas_sge32);
2877 if (instance->flag_ieee) {
2878 sge_sz = sizeof(struct megasas_sge_skinny);
2882 * Calculated the number of 64byte frames required for SGL
2884 sgl_sz = sge_sz * instance->max_num_sge;
2885 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
2889 * We need one extra frame for the MFI command
2893 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
2895 * Use DMA pool facility provided by PCI layer
2897 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
2898 instance->pdev, total_sz, 64,
2901 if (!instance->frame_dma_pool) {
2902 printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
2906 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
2907 instance->pdev, 128, 4, 0);
2909 if (!instance->sense_dma_pool) {
2910 printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
2912 pci_pool_destroy(instance->frame_dma_pool);
2913 instance->frame_dma_pool = NULL;
2919 * Allocate and attach a frame to each of the commands in cmd_list.
2920 * By making cmd->index as the context instead of the &cmd, we can
2921 * always use 32bit context regardless of the architecture
2923 for (i = 0; i < max_cmd; i++) {
2925 cmd = instance->cmd_list[i];
2927 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
2928 GFP_KERNEL, &cmd->frame_phys_addr);
2930 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
2931 GFP_KERNEL, &cmd->sense_phys_addr);
2934 * megasas_teardown_frame_pool() takes care of freeing
2935 * whatever has been allocated
2937 if (!cmd->frame || !cmd->sense) {
2938 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
2939 megasas_teardown_frame_pool(instance);
2943 memset(cmd->frame, 0, total_sz);
2944 cmd->frame->io.context = cmd->index;
2945 cmd->frame->io.pad_0 = 0;
2946 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
2947 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
2949 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
2956 * megasas_free_cmds - Free all the cmds in the free cmd pool
2957 * @instance: Adapter soft state
2959 void megasas_free_cmds(struct megasas_instance *instance)
2962 /* First free the MFI frame pool */
2963 megasas_teardown_frame_pool(instance);
2965 /* Free all the commands in the cmd_list */
2966 for (i = 0; i < instance->max_mfi_cmds; i++)
2968 kfree(instance->cmd_list[i]);
2970 /* Free the cmd_list buffer itself */
2971 kfree(instance->cmd_list);
2972 instance->cmd_list = NULL;
2974 INIT_LIST_HEAD(&instance->cmd_pool);
2978 * megasas_alloc_cmds - Allocates the command packets
2979 * @instance: Adapter soft state
2981 * Each command that is issued to the FW, whether IO commands from the OS or
2982 * internal commands like IOCTLs, are wrapped in local data structure called
2983 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
2986 * Each frame has a 32-bit field called context (tag). This context is used
2987 * to get back the megasas_cmd from the frame when a frame gets completed in
2988 * the ISR. Typically the address of the megasas_cmd itself would be used as
2989 * the context. But we wanted to keep the differences between 32 and 64 bit
2990 * systems to the mininum. We always use 32 bit integers for the context. In
2991 * this driver, the 32 bit values are the indices into an array cmd_list.
2992 * This array is used only to look up the megasas_cmd given the context. The
2993 * free commands themselves are maintained in a linked list called cmd_pool.
2995 int megasas_alloc_cmds(struct megasas_instance *instance)
3000 struct megasas_cmd *cmd;
3002 max_cmd = instance->max_mfi_cmds;
3005 * instance->cmd_list is an array of struct megasas_cmd pointers.
3006 * Allocate the dynamic array first and then allocate individual
3009 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
3011 if (!instance->cmd_list) {
3012 printk(KERN_DEBUG "megasas: out of memory\n");
3016 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
3018 for (i = 0; i < max_cmd; i++) {
3019 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3022 if (!instance->cmd_list[i]) {
3024 for (j = 0; j < i; j++)
3025 kfree(instance->cmd_list[j]);
3027 kfree(instance->cmd_list);
3028 instance->cmd_list = NULL;
3035 * Add all the commands to command pool (instance->cmd_pool)
3037 for (i = 0; i < max_cmd; i++) {
3038 cmd = instance->cmd_list[i];
3039 memset(cmd, 0, sizeof(struct megasas_cmd));
3042 cmd->instance = instance;
3044 list_add_tail(&cmd->list, &instance->cmd_pool);
3048 * Create a frame pool and assign one frame to each cmd
3050 if (megasas_create_frame_pool(instance)) {
3051 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
3052 megasas_free_cmds(instance);
3059 * megasas_get_pd_list_info - Returns FW's pd_list structure
3060 * @instance: Adapter soft state
3061 * @pd_list: pd_list structure
3063 * Issues an internal command (DCMD) to get the FW's controller PD
3064 * list structure. This information is mainly used to find out SYSTEM
3065 * supported by the FW.
3068 megasas_get_pd_list(struct megasas_instance *instance)
3070 int ret = 0, pd_index = 0;
3071 struct megasas_cmd *cmd;
3072 struct megasas_dcmd_frame *dcmd;
3073 struct MR_PD_LIST *ci;
3074 struct MR_PD_ADDRESS *pd_addr;
3075 dma_addr_t ci_h = 0;
3077 cmd = megasas_get_cmd(instance);
3080 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
3084 dcmd = &cmd->frame->dcmd;
3086 ci = pci_alloc_consistent(instance->pdev,
3087 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
3090 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
3091 megasas_return_cmd(instance, cmd);
3095 memset(ci, 0, sizeof(*ci));
3096 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3098 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
3099 dcmd->mbox.b[1] = 0;
3100 dcmd->cmd = MFI_CMD_DCMD;
3101 dcmd->cmd_status = 0xFF;
3102 dcmd->sge_count = 1;
3103 dcmd->flags = MFI_FRAME_DIR_READ;
3106 dcmd->data_xfer_len = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
3107 dcmd->opcode = MR_DCMD_PD_LIST_QUERY;
3108 dcmd->sgl.sge32[0].phys_addr = ci_h;
3109 dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
3111 if (!megasas_issue_polled(instance, cmd)) {
3118 * the following function will get the instance PD LIST.
3125 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
3127 memset(instance->pd_list, 0,
3128 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
3130 for (pd_index = 0; pd_index < ci->count; pd_index++) {
3132 instance->pd_list[pd_addr->deviceId].tid =
3134 instance->pd_list[pd_addr->deviceId].driveType =
3135 pd_addr->scsiDevType;
3136 instance->pd_list[pd_addr->deviceId].driveState =
3142 pci_free_consistent(instance->pdev,
3143 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
3145 megasas_return_cmd(instance, cmd);
3151 * megasas_get_ld_list_info - Returns FW's ld_list structure
3152 * @instance: Adapter soft state
3153 * @ld_list: ld_list structure
3155 * Issues an internal command (DCMD) to get the FW's controller PD
3156 * list structure. This information is mainly used to find out SYSTEM
3157 * supported by the FW.
3160 megasas_get_ld_list(struct megasas_instance *instance)
3162 int ret = 0, ld_index = 0, ids = 0;
3163 struct megasas_cmd *cmd;
3164 struct megasas_dcmd_frame *dcmd;
3165 struct MR_LD_LIST *ci;
3166 dma_addr_t ci_h = 0;
3168 cmd = megasas_get_cmd(instance);
3171 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
3175 dcmd = &cmd->frame->dcmd;
3177 ci = pci_alloc_consistent(instance->pdev,
3178 sizeof(struct MR_LD_LIST),
3182 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n");
3183 megasas_return_cmd(instance, cmd);
3187 memset(ci, 0, sizeof(*ci));
3188 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3190 dcmd->cmd = MFI_CMD_DCMD;
3191 dcmd->cmd_status = 0xFF;
3192 dcmd->sge_count = 1;
3193 dcmd->flags = MFI_FRAME_DIR_READ;
3195 dcmd->data_xfer_len = sizeof(struct MR_LD_LIST);
3196 dcmd->opcode = MR_DCMD_LD_GET_LIST;
3197 dcmd->sgl.sge32[0].phys_addr = ci_h;
3198 dcmd->sgl.sge32[0].length = sizeof(struct MR_LD_LIST);
3201 if (!megasas_issue_polled(instance, cmd)) {
3207 /* the following function will get the instance PD LIST */
3209 if ((ret == 0) && (ci->ldCount <= MAX_LOGICAL_DRIVES)) {
3210 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3212 for (ld_index = 0; ld_index < ci->ldCount; ld_index++) {
3213 if (ci->ldList[ld_index].state != 0) {
3214 ids = ci->ldList[ld_index].ref.targetId;
3215 instance->ld_ids[ids] =
3216 ci->ldList[ld_index].ref.targetId;
3221 pci_free_consistent(instance->pdev,
3222 sizeof(struct MR_LD_LIST),
3226 megasas_return_cmd(instance, cmd);
3231 * megasas_get_controller_info - Returns FW's controller structure
3232 * @instance: Adapter soft state
3233 * @ctrl_info: Controller information structure
3235 * Issues an internal command (DCMD) to get the FW's controller structure.
3236 * This information is mainly used to find out the maximum IO transfer per
3237 * command supported by the FW.
3240 megasas_get_ctrl_info(struct megasas_instance *instance,
3241 struct megasas_ctrl_info *ctrl_info)
3244 struct megasas_cmd *cmd;
3245 struct megasas_dcmd_frame *dcmd;
3246 struct megasas_ctrl_info *ci;
3247 dma_addr_t ci_h = 0;
3249 cmd = megasas_get_cmd(instance);
3252 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
3256 dcmd = &cmd->frame->dcmd;
3258 ci = pci_alloc_consistent(instance->pdev,
3259 sizeof(struct megasas_ctrl_info), &ci_h);
3262 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
3263 megasas_return_cmd(instance, cmd);
3267 memset(ci, 0, sizeof(*ci));
3268 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3270 dcmd->cmd = MFI_CMD_DCMD;
3271 dcmd->cmd_status = 0xFF;
3272 dcmd->sge_count = 1;
3273 dcmd->flags = MFI_FRAME_DIR_READ;
3276 dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info);
3277 dcmd->opcode = MR_DCMD_CTRL_GET_INFO;
3278 dcmd->sgl.sge32[0].phys_addr = ci_h;
3279 dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info);
3281 if (!megasas_issue_polled(instance, cmd)) {
3283 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
3288 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
3291 megasas_return_cmd(instance, cmd);
3296 * megasas_issue_init_mfi - Initializes the FW
3297 * @instance: Adapter soft state
3299 * Issues the INIT MFI cmd
3302 megasas_issue_init_mfi(struct megasas_instance *instance)
3306 struct megasas_cmd *cmd;
3308 struct megasas_init_frame *init_frame;
3309 struct megasas_init_queue_info *initq_info;
3310 dma_addr_t init_frame_h;
3311 dma_addr_t initq_info_h;
3314 * Prepare a init frame. Note the init frame points to queue info
3315 * structure. Each frame has SGL allocated after first 64 bytes. For
3316 * this frame - since we don't need any SGL - we use SGL's space as
3317 * queue info structure
3319 * We will not get a NULL command below. We just created the pool.
3321 cmd = megasas_get_cmd(instance);
3323 init_frame = (struct megasas_init_frame *)cmd->frame;
3324 initq_info = (struct megasas_init_queue_info *)
3325 ((unsigned long)init_frame + 64);
3327 init_frame_h = cmd->frame_phys_addr;
3328 initq_info_h = init_frame_h + 64;
3330 context = init_frame->context;
3331 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
3332 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
3333 init_frame->context = context;
3335 initq_info->reply_queue_entries = instance->max_fw_cmds + 1;
3336 initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h;
3338 initq_info->producer_index_phys_addr_lo = instance->producer_h;
3339 initq_info->consumer_index_phys_addr_lo = instance->consumer_h;
3341 init_frame->cmd = MFI_CMD_INIT;
3342 init_frame->cmd_status = 0xFF;
3343 init_frame->queue_info_new_phys_addr_lo = initq_info_h;
3345 init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info);
3348 * disable the intr before firing the init frame to FW
3350 instance->instancet->disable_intr(instance->reg_set);
3353 * Issue the init frame in polled mode
3356 if (megasas_issue_polled(instance, cmd)) {
3357 printk(KERN_ERR "megasas: Failed to init firmware\n");
3358 megasas_return_cmd(instance, cmd);
3362 megasas_return_cmd(instance, cmd);
3371 * megasas_start_timer - Initializes a timer object
3372 * @instance: Adapter soft state
3373 * @timer: timer object to be initialized
3374 * @fn: timer function
3375 * @interval: time interval between timer function call
3378 megasas_start_timer(struct megasas_instance *instance,
3379 struct timer_list *timer,
3380 void *fn, unsigned long interval)
3383 timer->expires = jiffies + interval;
3384 timer->data = (unsigned long)instance;
3385 timer->function = fn;
3390 * megasas_io_completion_timer - Timer fn
3391 * @instance_addr: Address of adapter soft state
3393 * Schedules tasklet for cmd completion
3394 * if poll_mode_io is set
3397 megasas_io_completion_timer(unsigned long instance_addr)
3399 struct megasas_instance *instance =
3400 (struct megasas_instance *)instance_addr;
3402 if (atomic_read(&instance->fw_outstanding))
3403 tasklet_schedule(&instance->isr_tasklet);
3407 mod_timer(&instance->io_completion_timer,
3408 jiffies + MEGASAS_COMPLETION_TIMER_INTERVAL);
3412 megasas_init_adapter_mfi(struct megasas_instance *instance)
3414 struct megasas_register_set __iomem *reg_set;
3418 reg_set = instance->reg_set;
3421 * Get various operational parameters from status register
3423 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
3425 * Reduce the max supported cmds by 1. This is to ensure that the
3426 * reply_q_sz (1 more than the max cmd that driver may send)
3427 * does not exceed max cmds that the FW can support
3429 instance->max_fw_cmds = instance->max_fw_cmds-1;
3430 instance->max_mfi_cmds = instance->max_fw_cmds;
3431 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
3434 * Create a pool of commands
3436 if (megasas_alloc_cmds(instance))
3437 goto fail_alloc_cmds;
3440 * Allocate memory for reply queue. Length of reply queue should
3441 * be _one_ more than the maximum commands handled by the firmware.
3443 * Note: When FW completes commands, it places corresponding contex
3444 * values in this circular reply queue. This circular queue is a fairly
3445 * typical producer-consumer queue. FW is the producer (of completed
3446 * commands) and the driver is the consumer.
3448 context_sz = sizeof(u32);
3449 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
3451 instance->reply_queue = pci_alloc_consistent(instance->pdev,
3453 &instance->reply_queue_h);
3455 if (!instance->reply_queue) {
3456 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
3457 goto fail_reply_queue;
3460 if (megasas_issue_init_mfi(instance))
3463 instance->fw_support_ieee = 0;
3464 instance->fw_support_ieee =
3465 (instance->instancet->read_fw_status_reg(reg_set) &
3468 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
3469 instance->fw_support_ieee);
3471 if (instance->fw_support_ieee)
3472 instance->flag_ieee = 1;
3478 pci_free_consistent(instance->pdev, reply_q_sz,
3479 instance->reply_queue, instance->reply_queue_h);
3481 megasas_free_cmds(instance);
3488 * megasas_init_fw - Initializes the FW
3489 * @instance: Adapter soft state
3491 * This is the main function for initializing firmware
3494 static int megasas_init_fw(struct megasas_instance *instance)
3498 u32 tmp_sectors, msix_enable;
3499 resource_size_t base_addr;
3500 struct megasas_register_set __iomem *reg_set;
3501 struct megasas_ctrl_info *ctrl_info;
3502 unsigned long bar_list;
3505 /* Find first memory bar */
3506 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
3507 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
3508 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
3510 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
3514 base_addr = pci_resource_start(instance->pdev, instance->bar);
3515 instance->reg_set = ioremap_nocache(base_addr, 8192);
3517 if (!instance->reg_set) {
3518 printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
3522 reg_set = instance->reg_set;
3524 switch (instance->pdev->device) {
3525 case PCI_DEVICE_ID_LSI_FUSION:
3526 case PCI_DEVICE_ID_LSI_INVADER:
3527 instance->instancet = &megasas_instance_template_fusion;
3529 case PCI_DEVICE_ID_LSI_SAS1078R:
3530 case PCI_DEVICE_ID_LSI_SAS1078DE:
3531 instance->instancet = &megasas_instance_template_ppc;
3533 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
3534 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
3535 instance->instancet = &megasas_instance_template_gen2;
3537 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
3538 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
3539 instance->instancet = &megasas_instance_template_skinny;
3541 case PCI_DEVICE_ID_LSI_SAS1064R:
3542 case PCI_DEVICE_ID_DELL_PERC5:
3544 instance->instancet = &megasas_instance_template_xscale;
3548 if (megasas_transition_to_ready(instance, 0)) {
3549 atomic_set(&instance->fw_reset_no_pci_access, 1);
3550 instance->instancet->adp_reset
3551 (instance, instance->reg_set);
3552 atomic_set(&instance->fw_reset_no_pci_access, 0);
3553 dev_info(&instance->pdev->dev,
3554 "megasas: FW restarted successfully from %s!\n",
3557 /*waitting for about 30 second before retry*/
3560 if (megasas_transition_to_ready(instance, 0))
3561 goto fail_ready_state;
3564 /* Check if MSI-X is supported while in ready state */
3565 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
3567 if (msix_enable && !msix_disable) {
3568 /* Check max MSI-X vectors */
3569 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
3570 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) {
3571 instance->msix_vectors = (readl(&instance->reg_set->
3572 outbound_scratch_pad_2
3575 instance->msix_vectors = 1;
3576 /* Don't bother allocating more MSI-X vectors than cpus */
3577 instance->msix_vectors = min(instance->msix_vectors,
3578 (unsigned int)num_online_cpus());
3579 for (i = 0; i < instance->msix_vectors; i++)
3580 instance->msixentry[i].entry = i;
3581 i = pci_enable_msix(instance->pdev, instance->msixentry,
3582 instance->msix_vectors);
3585 if (!pci_enable_msix(instance->pdev,
3586 instance->msixentry, i))
3587 instance->msix_vectors = i;
3589 instance->msix_vectors = 0;
3592 instance->msix_vectors = 0;
3595 /* Get operational params, sge flags, send init cmd to controller */
3596 if (instance->instancet->init_adapter(instance))
3597 goto fail_init_adapter;
3599 printk(KERN_ERR "megasas: INIT adapter done\n");
3602 * the following function will get the PD LIST.
3605 memset(instance->pd_list, 0 ,
3606 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
3607 megasas_get_pd_list(instance);
3609 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3610 megasas_get_ld_list(instance);
3612 ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL);
3615 * Compute the max allowed sectors per IO: The controller info has two
3616 * limits on max sectors. Driver should use the minimum of these two.
3618 * 1 << stripe_sz_ops.min = max sectors per strip
3620 * Note that older firmwares ( < FW ver 30) didn't report information
3621 * to calculate max_sectors_1. So the number ended up as zero always.
3624 if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) {
3626 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
3627 ctrl_info->max_strips_per_io;
3628 max_sectors_2 = ctrl_info->max_request_size;
3630 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
3631 instance->disableOnlineCtrlReset =
3632 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
3635 instance->max_sectors_per_req = instance->max_num_sge *
3636 SGE_BUFFER_SIZE / 512;
3637 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
3638 instance->max_sectors_per_req = tmp_sectors;
3643 * Setup tasklet for cmd completion
3646 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
3647 (unsigned long)instance);
3649 /* Initialize the cmd completion timer */
3651 megasas_start_timer(instance, &instance->io_completion_timer,
3652 megasas_io_completion_timer,
3653 MEGASAS_COMPLETION_TIMER_INTERVAL);
3658 iounmap(instance->reg_set);
3661 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
3667 * megasas_release_mfi - Reverses the FW initialization
3668 * @intance: Adapter soft state
3670 static void megasas_release_mfi(struct megasas_instance *instance)
3672 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
3674 if (instance->reply_queue)
3675 pci_free_consistent(instance->pdev, reply_q_sz,
3676 instance->reply_queue, instance->reply_queue_h);
3678 megasas_free_cmds(instance);
3680 iounmap(instance->reg_set);
3682 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
3686 * megasas_get_seq_num - Gets latest event sequence numbers
3687 * @instance: Adapter soft state
3688 * @eli: FW event log sequence numbers information
3690 * FW maintains a log of all events in a non-volatile area. Upper layers would
3691 * usually find out the latest sequence number of the events, the seq number at
3692 * the boot etc. They would "read" all the events below the latest seq number
3693 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
3694 * number), they would subsribe to AEN (asynchronous event notification) and
3695 * wait for the events to happen.
3698 megasas_get_seq_num(struct megasas_instance *instance,
3699 struct megasas_evt_log_info *eli)
3701 struct megasas_cmd *cmd;
3702 struct megasas_dcmd_frame *dcmd;
3703 struct megasas_evt_log_info *el_info;
3704 dma_addr_t el_info_h = 0;
3706 cmd = megasas_get_cmd(instance);
3712 dcmd = &cmd->frame->dcmd;
3713 el_info = pci_alloc_consistent(instance->pdev,
3714 sizeof(struct megasas_evt_log_info),
3718 megasas_return_cmd(instance, cmd);
3722 memset(el_info, 0, sizeof(*el_info));
3723 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3725 dcmd->cmd = MFI_CMD_DCMD;
3726 dcmd->cmd_status = 0x0;
3727 dcmd->sge_count = 1;
3728 dcmd->flags = MFI_FRAME_DIR_READ;
3731 dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info);
3732 dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO;
3733 dcmd->sgl.sge32[0].phys_addr = el_info_h;
3734 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info);
3736 megasas_issue_blocked_cmd(instance, cmd);
3739 * Copy the data back into callers buffer
3741 memcpy(eli, el_info, sizeof(struct megasas_evt_log_info));
3743 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
3744 el_info, el_info_h);
3746 megasas_return_cmd(instance, cmd);
3752 * megasas_register_aen - Registers for asynchronous event notification
3753 * @instance: Adapter soft state
3754 * @seq_num: The starting sequence number
3755 * @class_locale: Class of the event
3757 * This function subscribes for AEN for events beyond the @seq_num. It requests
3758 * to be notified if and only if the event is of type @class_locale
3761 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
3762 u32 class_locale_word)
3765 struct megasas_cmd *cmd;
3766 struct megasas_dcmd_frame *dcmd;
3767 union megasas_evt_class_locale curr_aen;
3768 union megasas_evt_class_locale prev_aen;
3771 * If there an AEN pending already (aen_cmd), check if the
3772 * class_locale of that pending AEN is inclusive of the new
3773 * AEN request we currently have. If it is, then we don't have
3774 * to do anything. In other words, whichever events the current
3775 * AEN request is subscribing to, have already been subscribed
3778 * If the old_cmd is _not_ inclusive, then we have to abort
3779 * that command, form a class_locale that is superset of both
3780 * old and current and re-issue to the FW
3783 curr_aen.word = class_locale_word;
3785 if (instance->aen_cmd) {
3787 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
3790 * A class whose enum value is smaller is inclusive of all
3791 * higher values. If a PROGRESS (= -1) was previously
3792 * registered, then a new registration requests for higher
3793 * classes need not be sent to FW. They are automatically
3796 * Locale numbers don't have such hierarchy. They are bitmap
3799 if ((prev_aen.members.class <= curr_aen.members.class) &&
3800 !((prev_aen.members.locale & curr_aen.members.locale) ^
3801 curr_aen.members.locale)) {
3803 * Previously issued event registration includes
3804 * current request. Nothing to do.
3808 curr_aen.members.locale |= prev_aen.members.locale;
3810 if (prev_aen.members.class < curr_aen.members.class)
3811 curr_aen.members.class = prev_aen.members.class;
3813 instance->aen_cmd->abort_aen = 1;
3814 ret_val = megasas_issue_blocked_abort_cmd(instance,
3819 printk(KERN_DEBUG "megasas: Failed to abort "
3820 "previous AEN command\n");
3826 cmd = megasas_get_cmd(instance);
3831 dcmd = &cmd->frame->dcmd;
3833 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
3836 * Prepare DCMD for aen registration
3838 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3840 dcmd->cmd = MFI_CMD_DCMD;
3841 dcmd->cmd_status = 0x0;
3842 dcmd->sge_count = 1;
3843 dcmd->flags = MFI_FRAME_DIR_READ;
3846 instance->last_seq_num = seq_num;
3847 dcmd->data_xfer_len = sizeof(struct megasas_evt_detail);
3848 dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT;
3849 dcmd->mbox.w[0] = seq_num;
3850 dcmd->mbox.w[1] = curr_aen.word;
3851 dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h;
3852 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail);
3854 if (instance->aen_cmd != NULL) {
3855 megasas_return_cmd(instance, cmd);
3860 * Store reference to the cmd used to register for AEN. When an
3861 * application wants us to register for AEN, we have to abort this
3862 * cmd and re-register with a new EVENT LOCALE supplied by that app
3864 instance->aen_cmd = cmd;
3867 * Issue the aen registration frame
3869 instance->instancet->issue_dcmd(instance, cmd);
3875 * megasas_start_aen - Subscribes to AEN during driver load time
3876 * @instance: Adapter soft state
3878 static int megasas_start_aen(struct megasas_instance *instance)
3880 struct megasas_evt_log_info eli;
3881 union megasas_evt_class_locale class_locale;
3884 * Get the latest sequence number from FW
3886 memset(&eli, 0, sizeof(eli));
3888 if (megasas_get_seq_num(instance, &eli))
3892 * Register AEN with FW for latest sequence number plus 1
3894 class_locale.members.reserved = 0;
3895 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3896 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3898 return megasas_register_aen(instance, eli.newest_seq_num + 1,
3903 * megasas_io_attach - Attaches this driver to SCSI mid-layer
3904 * @instance: Adapter soft state
3906 static int megasas_io_attach(struct megasas_instance *instance)
3908 struct Scsi_Host *host = instance->host;
3911 * Export parameters required by SCSI mid-layer
3913 host->irq = instance->pdev->irq;
3914 host->unique_id = instance->unique_id;
3915 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3916 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
3918 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
3921 instance->max_fw_cmds - MEGASAS_INT_CMDS;
3922 host->this_id = instance->init_id;
3923 host->sg_tablesize = instance->max_num_sge;
3925 if (instance->fw_support_ieee)
3926 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
3929 * Check if the module parameter value for max_sectors can be used
3931 if (max_sectors && max_sectors < instance->max_sectors_per_req)
3932 instance->max_sectors_per_req = max_sectors;
3935 if (((instance->pdev->device ==
3936 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
3937 (instance->pdev->device ==
3938 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
3939 (max_sectors <= MEGASAS_MAX_SECTORS)) {
3940 instance->max_sectors_per_req = max_sectors;
3942 printk(KERN_INFO "megasas: max_sectors should be > 0"
3943 "and <= %d (or < 1MB for GEN2 controller)\n",
3944 instance->max_sectors_per_req);
3949 host->max_sectors = instance->max_sectors_per_req;
3950 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
3951 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
3952 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
3953 host->max_lun = MEGASAS_MAX_LUN;
3954 host->max_cmd_len = 16;
3956 /* Fusion only supports host reset */
3957 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
3958 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) {
3959 host->hostt->eh_device_reset_handler = NULL;
3960 host->hostt->eh_bus_reset_handler = NULL;
3964 * Notify the mid-layer about the new controller
3966 if (scsi_add_host(host, &instance->pdev->dev)) {
3967 printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
3972 * Trigger SCSI to scan our drives
3974 scsi_scan_host(host);
3979 megasas_set_dma_mask(struct pci_dev *pdev)
3982 * All our contollers are capable of performing 64-bit DMA
3985 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
3987 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
3988 goto fail_set_dma_mask;
3991 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
3992 goto fail_set_dma_mask;
4001 * megasas_probe_one - PCI hotplug entry point
4002 * @pdev: PCI device structure
4003 * @id: PCI ids of supported hotplugged adapter
4005 static int __devinit
4006 megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4008 int rval, pos, i, j;
4009 struct Scsi_Host *host;
4010 struct megasas_instance *instance;
4013 /* Reset MSI-X in the kdump kernel */
4014 if (reset_devices) {
4015 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
4017 pci_read_config_word(pdev, msi_control_reg(pos),
4019 if (control & PCI_MSIX_FLAGS_ENABLE) {
4020 dev_info(&pdev->dev, "resetting MSI-X\n");
4021 pci_write_config_word(pdev,
4022 msi_control_reg(pos),
4024 ~PCI_MSIX_FLAGS_ENABLE);
4030 * Announce PCI information
4032 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
4033 pdev->vendor, pdev->device, pdev->subsystem_vendor,
4034 pdev->subsystem_device);
4036 printk("bus %d:slot %d:func %d\n",
4037 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
4040 * PCI prepping: enable device set bus mastering and dma mask
4042 rval = pci_enable_device_mem(pdev);
4048 pci_set_master(pdev);
4050 if (megasas_set_dma_mask(pdev))
4051 goto fail_set_dma_mask;
4053 host = scsi_host_alloc(&megasas_template,
4054 sizeof(struct megasas_instance));
4057 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
4058 goto fail_alloc_instance;
4061 instance = (struct megasas_instance *)host->hostdata;
4062 memset(instance, 0, sizeof(*instance));
4063 atomic_set( &instance->fw_reset_no_pci_access, 0 );
4064 instance->pdev = pdev;
4066 switch (instance->pdev->device) {
4067 case PCI_DEVICE_ID_LSI_FUSION:
4068 case PCI_DEVICE_ID_LSI_INVADER:
4070 struct fusion_context *fusion;
4072 instance->ctrl_context =
4073 kzalloc(sizeof(struct fusion_context), GFP_KERNEL);
4074 if (!instance->ctrl_context) {
4075 printk(KERN_DEBUG "megasas: Failed to allocate "
4076 "memory for Fusion context info\n");
4077 goto fail_alloc_dma_buf;
4079 fusion = instance->ctrl_context;
4080 INIT_LIST_HEAD(&fusion->cmd_pool);
4081 spin_lock_init(&fusion->cmd_pool_lock);
4084 default: /* For all other supported controllers */
4086 instance->producer =
4087 pci_alloc_consistent(pdev, sizeof(u32),
4088 &instance->producer_h);
4089 instance->consumer =
4090 pci_alloc_consistent(pdev, sizeof(u32),
4091 &instance->consumer_h);
4093 if (!instance->producer || !instance->consumer) {
4094 printk(KERN_DEBUG "megasas: Failed to allocate"
4095 "memory for producer, consumer\n");
4096 goto fail_alloc_dma_buf;
4099 *instance->producer = 0;
4100 *instance->consumer = 0;
4104 megasas_poll_wait_aen = 0;
4105 instance->flag_ieee = 0;
4106 instance->ev = NULL;
4107 instance->issuepend_done = 1;
4108 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
4109 megasas_poll_wait_aen = 0;
4111 instance->evt_detail = pci_alloc_consistent(pdev,
4113 megasas_evt_detail),
4114 &instance->evt_detail_h);
4116 if (!instance->evt_detail) {
4117 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
4118 "event detail structure\n");
4119 goto fail_alloc_dma_buf;
4123 * Initialize locks and queues
4125 INIT_LIST_HEAD(&instance->cmd_pool);
4126 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
4128 atomic_set(&instance->fw_outstanding,0);
4130 init_waitqueue_head(&instance->int_cmd_wait_q);
4131 init_waitqueue_head(&instance->abort_cmd_wait_q);
4133 spin_lock_init(&instance->cmd_pool_lock);
4134 spin_lock_init(&instance->hba_lock);
4135 spin_lock_init(&instance->completion_lock);
4137 mutex_init(&instance->aen_mutex);
4138 mutex_init(&instance->reset_mutex);
4141 * Initialize PCI related and misc parameters
4143 instance->host = host;
4144 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
4145 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
4147 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4148 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
4149 instance->flag_ieee = 1;
4150 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4152 sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS);
4154 megasas_dbg_lvl = 0;
4156 instance->unload = 1;
4157 instance->last_time = 0;
4158 instance->disableOnlineCtrlReset = 1;
4160 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4161 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER))
4162 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
4164 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
4167 * Initialize MFI Firmware
4169 if (megasas_init_fw(instance))
4175 if (instance->msix_vectors) {
4176 for (i = 0 ; i < instance->msix_vectors; i++) {
4177 instance->irq_context[i].instance = instance;
4178 instance->irq_context[i].MSIxIndex = i;
4179 if (request_irq(instance->msixentry[i].vector,
4180 instance->instancet->service_isr, 0,
4182 &instance->irq_context[i])) {
4183 printk(KERN_DEBUG "megasas: Failed to "
4184 "register IRQ for vector %d.\n", i);
4185 for (j = 0 ; j < i ; j++)
4187 instance->msixentry[j].vector,
4188 &instance->irq_context[j]);
4193 instance->irq_context[0].instance = instance;
4194 instance->irq_context[0].MSIxIndex = 0;
4195 if (request_irq(pdev->irq, instance->instancet->service_isr,
4196 IRQF_SHARED, "megasas",
4197 &instance->irq_context[0])) {
4198 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
4203 instance->instancet->enable_intr(instance->reg_set);
4206 * Store instance in PCI softstate
4208 pci_set_drvdata(pdev, instance);
4211 * Add this controller to megasas_mgmt_info structure so that it
4212 * can be exported to management applications
4214 megasas_mgmt_info.count++;
4215 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
4216 megasas_mgmt_info.max_index++;
4219 * Register with SCSI mid-layer
4221 if (megasas_io_attach(instance))
4222 goto fail_io_attach;
4224 instance->unload = 0;
4227 * Initiate AEN (Asynchronous Event Notification)
4229 if (megasas_start_aen(instance)) {
4230 printk(KERN_DEBUG "megasas: start aen failed\n");
4231 goto fail_start_aen;
4238 megasas_mgmt_info.count--;
4239 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
4240 megasas_mgmt_info.max_index--;
4242 pci_set_drvdata(pdev, NULL);
4243 instance->instancet->disable_intr(instance->reg_set);
4244 if (instance->msix_vectors)
4245 for (i = 0 ; i < instance->msix_vectors; i++)
4246 free_irq(instance->msixentry[i].vector,
4247 &instance->irq_context[i]);
4249 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4251 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4252 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER))
4253 megasas_release_fusion(instance);
4255 megasas_release_mfi(instance);
4257 if (instance->msix_vectors)
4258 pci_disable_msix(instance->pdev);
4260 if (instance->evt_detail)
4261 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4262 instance->evt_detail,
4263 instance->evt_detail_h);
4265 if (instance->producer)
4266 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4267 instance->producer_h);
4268 if (instance->consumer)
4269 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4270 instance->consumer_h);
4271 scsi_host_put(host);
4273 fail_alloc_instance:
4275 pci_disable_device(pdev);
4281 * megasas_flush_cache - Requests FW to flush all its caches
4282 * @instance: Adapter soft state
4284 static void megasas_flush_cache(struct megasas_instance *instance)
4286 struct megasas_cmd *cmd;
4287 struct megasas_dcmd_frame *dcmd;
4289 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
4292 cmd = megasas_get_cmd(instance);
4297 dcmd = &cmd->frame->dcmd;
4299 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4301 dcmd->cmd = MFI_CMD_DCMD;
4302 dcmd->cmd_status = 0x0;
4303 dcmd->sge_count = 0;
4304 dcmd->flags = MFI_FRAME_DIR_NONE;
4307 dcmd->data_xfer_len = 0;
4308 dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH;
4309 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
4311 megasas_issue_blocked_cmd(instance, cmd);
4313 megasas_return_cmd(instance, cmd);
4319 * megasas_shutdown_controller - Instructs FW to shutdown the controller
4320 * @instance: Adapter soft state
4321 * @opcode: Shutdown/Hibernate
4323 static void megasas_shutdown_controller(struct megasas_instance *instance,
4326 struct megasas_cmd *cmd;
4327 struct megasas_dcmd_frame *dcmd;
4329 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
4332 cmd = megasas_get_cmd(instance);
4337 if (instance->aen_cmd)
4338 megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd);
4339 if (instance->map_update_cmd)
4340 megasas_issue_blocked_abort_cmd(instance,
4341 instance->map_update_cmd);
4342 dcmd = &cmd->frame->dcmd;
4344 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4346 dcmd->cmd = MFI_CMD_DCMD;
4347 dcmd->cmd_status = 0x0;
4348 dcmd->sge_count = 0;
4349 dcmd->flags = MFI_FRAME_DIR_NONE;
4352 dcmd->data_xfer_len = 0;
4353 dcmd->opcode = opcode;
4355 megasas_issue_blocked_cmd(instance, cmd);
4357 megasas_return_cmd(instance, cmd);
4364 * megasas_suspend - driver suspend entry point
4365 * @pdev: PCI device structure
4366 * @state: PCI power state to suspend routine
4369 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
4371 struct Scsi_Host *host;
4372 struct megasas_instance *instance;
4375 instance = pci_get_drvdata(pdev);
4376 host = instance->host;
4377 instance->unload = 1;
4380 del_timer_sync(&instance->io_completion_timer);
4382 megasas_flush_cache(instance);
4383 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
4385 /* cancel the delayed work if this work still in queue */
4386 if (instance->ev != NULL) {
4387 struct megasas_aen_event *ev = instance->ev;
4388 cancel_delayed_work_sync(
4389 (struct delayed_work *)&ev->hotplug_work);
4390 instance->ev = NULL;
4393 tasklet_kill(&instance->isr_tasklet);
4395 pci_set_drvdata(instance->pdev, instance);
4396 instance->instancet->disable_intr(instance->reg_set);
4398 if (instance->msix_vectors)
4399 for (i = 0 ; i < instance->msix_vectors; i++)
4400 free_irq(instance->msixentry[i].vector,
4401 &instance->irq_context[i]);
4403 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4404 if (instance->msix_vectors)
4405 pci_disable_msix(instance->pdev);
4407 pci_save_state(pdev);
4408 pci_disable_device(pdev);
4410 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4416 * megasas_resume- driver resume entry point
4417 * @pdev: PCI device structure
4420 megasas_resume(struct pci_dev *pdev)
4423 struct Scsi_Host *host;
4424 struct megasas_instance *instance;
4426 instance = pci_get_drvdata(pdev);
4427 host = instance->host;
4428 pci_set_power_state(pdev, PCI_D0);
4429 pci_enable_wake(pdev, PCI_D0, 0);
4430 pci_restore_state(pdev);
4433 * PCI prepping: enable device set bus mastering and dma mask
4435 rval = pci_enable_device_mem(pdev);
4438 printk(KERN_ERR "megasas: Enable device failed\n");
4442 pci_set_master(pdev);
4444 if (megasas_set_dma_mask(pdev))
4445 goto fail_set_dma_mask;
4448 * Initialize MFI Firmware
4451 atomic_set(&instance->fw_outstanding, 0);
4454 * We expect the FW state to be READY
4456 if (megasas_transition_to_ready(instance, 0))
4457 goto fail_ready_state;
4459 /* Now re-enable MSI-X */
4460 if (instance->msix_vectors)
4461 pci_enable_msix(instance->pdev, instance->msixentry,
4462 instance->msix_vectors);
4464 switch (instance->pdev->device) {
4465 case PCI_DEVICE_ID_LSI_FUSION:
4466 case PCI_DEVICE_ID_LSI_INVADER:
4468 megasas_reset_reply_desc(instance);
4469 if (megasas_ioc_init_fusion(instance)) {
4470 megasas_free_cmds(instance);
4471 megasas_free_cmds_fusion(instance);
4474 if (!megasas_get_map_info(instance))
4475 megasas_sync_map_info(instance);
4479 *instance->producer = 0;
4480 *instance->consumer = 0;
4481 if (megasas_issue_init_mfi(instance))
4486 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
4487 (unsigned long)instance);
4492 if (instance->msix_vectors) {
4493 for (i = 0 ; i < instance->msix_vectors; i++) {
4494 instance->irq_context[i].instance = instance;
4495 instance->irq_context[i].MSIxIndex = i;
4496 if (request_irq(instance->msixentry[i].vector,
4497 instance->instancet->service_isr, 0,
4499 &instance->irq_context[i])) {
4500 printk(KERN_DEBUG "megasas: Failed to "
4501 "register IRQ for vector %d.\n", i);
4502 for (j = 0 ; j < i ; j++)
4504 instance->msixentry[j].vector,
4505 &instance->irq_context[j]);
4510 instance->irq_context[0].instance = instance;
4511 instance->irq_context[0].MSIxIndex = 0;
4512 if (request_irq(pdev->irq, instance->instancet->service_isr,
4513 IRQF_SHARED, "megasas",
4514 &instance->irq_context[0])) {
4515 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
4520 instance->instancet->enable_intr(instance->reg_set);
4522 /* Initialize the cmd completion timer */
4524 megasas_start_timer(instance, &instance->io_completion_timer,
4525 megasas_io_completion_timer,
4526 MEGASAS_COMPLETION_TIMER_INTERVAL);
4527 instance->unload = 0;
4530 * Initiate AEN (Asynchronous Event Notification)
4532 if (megasas_start_aen(instance))
4533 printk(KERN_ERR "megasas: Start AEN failed\n");
4539 if (instance->evt_detail)
4540 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4541 instance->evt_detail,
4542 instance->evt_detail_h);
4544 if (instance->producer)
4545 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4546 instance->producer_h);
4547 if (instance->consumer)
4548 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4549 instance->consumer_h);
4550 scsi_host_put(host);
4555 pci_disable_device(pdev);
4560 #define megasas_suspend NULL
4561 #define megasas_resume NULL
4565 * megasas_detach_one - PCI hot"un"plug entry point
4566 * @pdev: PCI device structure
4568 static void __devexit megasas_detach_one(struct pci_dev *pdev)
4571 struct Scsi_Host *host;
4572 struct megasas_instance *instance;
4573 struct fusion_context *fusion;
4575 instance = pci_get_drvdata(pdev);
4576 instance->unload = 1;
4577 host = instance->host;
4578 fusion = instance->ctrl_context;
4581 del_timer_sync(&instance->io_completion_timer);
4583 scsi_remove_host(instance->host);
4584 megasas_flush_cache(instance);
4585 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
4587 /* cancel the delayed work if this work still in queue*/
4588 if (instance->ev != NULL) {
4589 struct megasas_aen_event *ev = instance->ev;
4590 cancel_delayed_work_sync(
4591 (struct delayed_work *)&ev->hotplug_work);
4592 instance->ev = NULL;
4595 tasklet_kill(&instance->isr_tasklet);
4598 * Take the instance off the instance array. Note that we will not
4599 * decrement the max_index. We let this array be sparse array
4601 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
4602 if (megasas_mgmt_info.instance[i] == instance) {
4603 megasas_mgmt_info.count--;
4604 megasas_mgmt_info.instance[i] = NULL;
4610 pci_set_drvdata(instance->pdev, NULL);
4612 instance->instancet->disable_intr(instance->reg_set);
4614 if (instance->msix_vectors)
4615 for (i = 0 ; i < instance->msix_vectors; i++)
4616 free_irq(instance->msixentry[i].vector,
4617 &instance->irq_context[i]);
4619 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4620 if (instance->msix_vectors)
4621 pci_disable_msix(instance->pdev);
4623 switch (instance->pdev->device) {
4624 case PCI_DEVICE_ID_LSI_FUSION:
4625 case PCI_DEVICE_ID_LSI_INVADER:
4626 megasas_release_fusion(instance);
4627 for (i = 0; i < 2 ; i++)
4628 if (fusion->ld_map[i])
4629 dma_free_coherent(&instance->pdev->dev,
4634 kfree(instance->ctrl_context);
4637 megasas_release_mfi(instance);
4638 pci_free_consistent(pdev,
4639 sizeof(struct megasas_evt_detail),
4640 instance->evt_detail,
4641 instance->evt_detail_h);
4642 pci_free_consistent(pdev, sizeof(u32),
4644 instance->producer_h);
4645 pci_free_consistent(pdev, sizeof(u32),
4647 instance->consumer_h);
4651 scsi_host_put(host);
4653 pci_set_drvdata(pdev, NULL);
4655 pci_disable_device(pdev);
4661 * megasas_shutdown - Shutdown entry point
4662 * @device: Generic device structure
4664 static void megasas_shutdown(struct pci_dev *pdev)
4667 struct megasas_instance *instance = pci_get_drvdata(pdev);
4669 instance->unload = 1;
4670 megasas_flush_cache(instance);
4671 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
4672 instance->instancet->disable_intr(instance->reg_set);
4673 if (instance->msix_vectors)
4674 for (i = 0 ; i < instance->msix_vectors; i++)
4675 free_irq(instance->msixentry[i].vector,
4676 &instance->irq_context[i]);
4678 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4679 if (instance->msix_vectors)
4680 pci_disable_msix(instance->pdev);
4684 * megasas_mgmt_open - char node "open" entry point
4686 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
4689 * Allow only those users with admin rights
4691 if (!capable(CAP_SYS_ADMIN))
4698 * megasas_mgmt_fasync - Async notifier registration from applications
4700 * This function adds the calling process to a driver global queue. When an
4701 * event occurs, SIGIO will be sent to all processes in this queue.
4703 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
4707 mutex_lock(&megasas_async_queue_mutex);
4709 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
4711 mutex_unlock(&megasas_async_queue_mutex);
4714 /* For sanity check when we get ioctl */
4715 filep->private_data = filep;
4719 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
4725 * megasas_mgmt_poll - char node "poll" entry point
4727 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
4730 unsigned long flags;
4731 poll_wait(file, &megasas_poll_wait, wait);
4732 spin_lock_irqsave(&poll_aen_lock, flags);
4733 if (megasas_poll_wait_aen)
4734 mask = (POLLIN | POLLRDNORM);
4737 spin_unlock_irqrestore(&poll_aen_lock, flags);
4742 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
4743 * @instance: Adapter soft state
4744 * @argp: User's ioctl packet
4747 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
4748 struct megasas_iocpacket __user * user_ioc,
4749 struct megasas_iocpacket *ioc)
4751 struct megasas_sge32 *kern_sge32;
4752 struct megasas_cmd *cmd;
4753 void *kbuff_arr[MAX_IOCTL_SGE];
4754 dma_addr_t buf_handle = 0;
4757 dma_addr_t sense_handle;
4758 unsigned long *sense_ptr;
4760 memset(kbuff_arr, 0, sizeof(kbuff_arr));
4762 if (ioc->sge_count > MAX_IOCTL_SGE) {
4763 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n",
4764 ioc->sge_count, MAX_IOCTL_SGE);
4768 cmd = megasas_get_cmd(instance);
4770 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
4775 * User's IOCTL packet has 2 frames (maximum). Copy those two
4776 * frames into our cmd's frames. cmd->frame's context will get
4777 * overwritten when we copy from user's frames. So set that value
4780 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
4781 cmd->frame->hdr.context = cmd->index;
4782 cmd->frame->hdr.pad_0 = 0;
4785 * The management interface between applications and the fw uses
4786 * MFI frames. E.g, RAID configuration changes, LD property changes
4787 * etc are accomplishes through different kinds of MFI frames. The
4788 * driver needs to care only about substituting user buffers with
4789 * kernel buffers in SGLs. The location of SGL is embedded in the
4790 * struct iocpacket itself.
4792 kern_sge32 = (struct megasas_sge32 *)
4793 ((unsigned long)cmd->frame + ioc->sgl_off);
4796 * For each user buffer, create a mirror buffer and copy in
4798 for (i = 0; i < ioc->sge_count; i++) {
4799 if (!ioc->sgl[i].iov_len)
4802 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
4803 ioc->sgl[i].iov_len,
4804 &buf_handle, GFP_KERNEL);
4805 if (!kbuff_arr[i]) {
4806 printk(KERN_DEBUG "megasas: Failed to alloc "
4807 "kernel SGL buffer for IOCTL \n");
4813 * We don't change the dma_coherent_mask, so
4814 * pci_alloc_consistent only returns 32bit addresses
4816 kern_sge32[i].phys_addr = (u32) buf_handle;
4817 kern_sge32[i].length = ioc->sgl[i].iov_len;
4820 * We created a kernel buffer corresponding to the
4821 * user buffer. Now copy in from the user buffer
4823 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
4824 (u32) (ioc->sgl[i].iov_len))) {
4830 if (ioc->sense_len) {
4831 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
4832 &sense_handle, GFP_KERNEL);
4839 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
4840 *sense_ptr = sense_handle;
4844 * Set the sync_cmd flag so that the ISR knows not to complete this
4845 * cmd to the SCSI mid-layer
4848 megasas_issue_blocked_cmd(instance, cmd);
4852 * copy out the kernel buffers to user buffers
4854 for (i = 0; i < ioc->sge_count; i++) {
4855 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
4856 ioc->sgl[i].iov_len)) {
4863 * copy out the sense
4865 if (ioc->sense_len) {
4867 * sense_ptr points to the location that has the user
4868 * sense buffer address
4870 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
4873 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
4874 sense, ioc->sense_len)) {
4875 printk(KERN_ERR "megasas: Failed to copy out to user "
4883 * copy the status codes returned by the fw
4885 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
4886 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
4887 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
4893 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
4894 sense, sense_handle);
4897 for (i = 0; i < ioc->sge_count; i++) {
4899 dma_free_coherent(&instance->pdev->dev,
4900 kern_sge32[i].length,
4902 kern_sge32[i].phys_addr);
4905 megasas_return_cmd(instance, cmd);
4909 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
4911 struct megasas_iocpacket __user *user_ioc =
4912 (struct megasas_iocpacket __user *)arg;
4913 struct megasas_iocpacket *ioc;
4914 struct megasas_instance *instance;
4917 unsigned long flags;
4918 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
4920 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
4924 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
4929 instance = megasas_lookup_instance(ioc->host_no);
4935 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
4936 printk(KERN_ERR "Controller in crit error\n");
4941 if (instance->unload == 1) {
4947 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
4949 if (down_interruptible(&instance->ioctl_sem)) {
4950 error = -ERESTARTSYS;
4954 for (i = 0; i < wait_time; i++) {
4956 spin_lock_irqsave(&instance->hba_lock, flags);
4957 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
4958 spin_unlock_irqrestore(&instance->hba_lock, flags);
4961 spin_unlock_irqrestore(&instance->hba_lock, flags);
4963 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
4964 printk(KERN_NOTICE "megasas: waiting"
4965 "for controller reset to finish\n");
4971 spin_lock_irqsave(&instance->hba_lock, flags);
4972 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
4973 spin_unlock_irqrestore(&instance->hba_lock, flags);
4975 printk(KERN_ERR "megaraid_sas: timed out while"
4976 "waiting for HBA to recover\n");
4980 spin_unlock_irqrestore(&instance->hba_lock, flags);
4982 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
4983 up(&instance->ioctl_sem);
4990 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
4992 struct megasas_instance *instance;
4993 struct megasas_aen aen;
4996 unsigned long flags;
4997 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
4999 if (file->private_data != file) {
5000 printk(KERN_DEBUG "megasas: fasync_helper was not "
5005 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
5008 instance = megasas_lookup_instance(aen.host_no);
5013 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
5017 if (instance->unload == 1) {
5021 for (i = 0; i < wait_time; i++) {
5023 spin_lock_irqsave(&instance->hba_lock, flags);
5024 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
5025 spin_unlock_irqrestore(&instance->hba_lock,
5030 spin_unlock_irqrestore(&instance->hba_lock, flags);
5032 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
5033 printk(KERN_NOTICE "megasas: waiting for"
5034 "controller reset to finish\n");
5040 spin_lock_irqsave(&instance->hba_lock, flags);
5041 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
5042 spin_unlock_irqrestore(&instance->hba_lock, flags);
5043 printk(KERN_ERR "megaraid_sas: timed out while waiting"
5044 "for HBA to recover.\n");
5047 spin_unlock_irqrestore(&instance->hba_lock, flags);
5049 mutex_lock(&instance->aen_mutex);
5050 error = megasas_register_aen(instance, aen.seq_num,
5051 aen.class_locale_word);
5052 mutex_unlock(&instance->aen_mutex);
5057 * megasas_mgmt_ioctl - char node ioctl entry point
5060 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
5063 case MEGASAS_IOC_FIRMWARE:
5064 return megasas_mgmt_ioctl_fw(file, arg);
5066 case MEGASAS_IOC_GET_AEN:
5067 return megasas_mgmt_ioctl_aen(file, arg);
5073 #ifdef CONFIG_COMPAT
5074 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
5076 struct compat_megasas_iocpacket __user *cioc =
5077 (struct compat_megasas_iocpacket __user *)arg;
5078 struct megasas_iocpacket __user *ioc =
5079 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
5083 unsigned long local_raw_ptr;
5084 u32 local_sense_off;
5085 u32 local_sense_len;
5087 if (clear_user(ioc, sizeof(*ioc)))
5090 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
5091 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
5092 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
5093 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
5094 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
5095 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
5099 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
5100 * sense_len is not null, so prepare the 64bit value under
5101 * the same condition.
5103 if (get_user(local_raw_ptr, ioc->frame.raw) ||
5104 get_user(local_sense_off, &ioc->sense_off) ||
5105 get_user(local_sense_len, &ioc->sense_len))
5109 if (local_sense_len) {
5110 void __user **sense_ioc_ptr =
5111 (void __user **)((u8*)local_raw_ptr + local_sense_off);
5112 compat_uptr_t *sense_cioc_ptr =
5113 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
5114 if (get_user(ptr, sense_cioc_ptr) ||
5115 put_user(compat_ptr(ptr), sense_ioc_ptr))
5119 for (i = 0; i < MAX_IOCTL_SGE; i++) {
5120 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
5121 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
5122 copy_in_user(&ioc->sgl[i].iov_len,
5123 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
5127 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
5129 if (copy_in_user(&cioc->frame.hdr.cmd_status,
5130 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
5131 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
5138 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
5142 case MEGASAS_IOC_FIRMWARE32:
5143 return megasas_mgmt_compat_ioctl_fw(file, arg);
5144 case MEGASAS_IOC_GET_AEN:
5145 return megasas_mgmt_ioctl_aen(file, arg);
5153 * File operations structure for management interface
5155 static const struct file_operations megasas_mgmt_fops = {
5156 .owner = THIS_MODULE,
5157 .open = megasas_mgmt_open,
5158 .fasync = megasas_mgmt_fasync,
5159 .unlocked_ioctl = megasas_mgmt_ioctl,
5160 .poll = megasas_mgmt_poll,
5161 #ifdef CONFIG_COMPAT
5162 .compat_ioctl = megasas_mgmt_compat_ioctl,
5164 .llseek = noop_llseek,
5168 * PCI hotplug support registration structure
5170 static struct pci_driver megasas_pci_driver = {
5172 .name = "megaraid_sas",
5173 .id_table = megasas_pci_table,
5174 .probe = megasas_probe_one,
5175 .remove = __devexit_p(megasas_detach_one),
5176 .suspend = megasas_suspend,
5177 .resume = megasas_resume,
5178 .shutdown = megasas_shutdown,
5182 * Sysfs driver attributes
5184 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
5186 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
5190 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
5193 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
5195 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
5199 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date,
5203 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
5205 return sprintf(buf, "%u\n", support_poll_for_event);
5208 static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
5209 megasas_sysfs_show_support_poll_for_event, NULL);
5212 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
5214 return sprintf(buf, "%u\n", support_device_change);
5217 static DRIVER_ATTR(support_device_change, S_IRUGO,
5218 megasas_sysfs_show_support_device_change, NULL);
5221 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
5223 return sprintf(buf, "%u\n", megasas_dbg_lvl);
5227 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
5230 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
5231 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
5237 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
5238 megasas_sysfs_set_dbg_lvl);
5241 megasas_sysfs_show_poll_mode_io(struct device_driver *dd, char *buf)
5243 return sprintf(buf, "%u\n", poll_mode_io);
5247 megasas_sysfs_set_poll_mode_io(struct device_driver *dd,
5248 const char *buf, size_t count)
5251 int tmp = poll_mode_io;
5253 struct megasas_instance *instance;
5255 if (sscanf(buf, "%u", &poll_mode_io) < 1) {
5256 printk(KERN_ERR "megasas: could not set poll_mode_io\n");
5261 * Check if poll_mode_io is already set or is same as previous value
5263 if ((tmp && poll_mode_io) || (tmp == poll_mode_io))
5268 * Start timers for all adapters
5270 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5271 instance = megasas_mgmt_info.instance[i];
5273 megasas_start_timer(instance,
5274 &instance->io_completion_timer,
5275 megasas_io_completion_timer,
5276 MEGASAS_COMPLETION_TIMER_INTERVAL);
5281 * Delete timers for all adapters
5283 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5284 instance = megasas_mgmt_info.instance[i];
5286 del_timer_sync(&instance->io_completion_timer);
5295 megasas_aen_polling(struct work_struct *work)
5297 struct megasas_aen_event *ev =
5298 container_of(work, struct megasas_aen_event, hotplug_work);
5299 struct megasas_instance *instance = ev->instance;
5300 union megasas_evt_class_locale class_locale;
5301 struct Scsi_Host *host;
5302 struct scsi_device *sdev1;
5305 int i, j, doscan = 0;
5310 printk(KERN_ERR "invalid instance!\n");
5314 instance->ev = NULL;
5315 host = instance->host;
5316 if (instance->evt_detail) {
5318 switch (instance->evt_detail->code) {
5319 case MR_EVT_PD_INSERTED:
5320 if (megasas_get_pd_list(instance) == 0) {
5321 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5323 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5327 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5330 scsi_device_lookup(host, i, j, 0);
5332 if (instance->pd_list[pd_index].driveState
5333 == MR_PD_STATE_SYSTEM) {
5335 scsi_add_device(host, i, j, 0);
5339 scsi_device_put(sdev1);
5347 case MR_EVT_PD_REMOVED:
5348 if (megasas_get_pd_list(instance) == 0) {
5349 megasas_get_pd_list(instance);
5350 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5352 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5356 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5359 scsi_device_lookup(host, i, j, 0);
5361 if (instance->pd_list[pd_index].driveState
5362 == MR_PD_STATE_SYSTEM) {
5364 scsi_device_put(sdev1);
5368 scsi_remove_device(sdev1);
5369 scsi_device_put(sdev1);
5378 case MR_EVT_LD_OFFLINE:
5379 case MR_EVT_CFG_CLEARED:
5380 case MR_EVT_LD_DELETED:
5381 megasas_get_ld_list(instance);
5382 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5384 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5388 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5390 sdev1 = scsi_device_lookup(host,
5391 i + MEGASAS_MAX_LD_CHANNELS,
5395 if (instance->ld_ids[ld_index] != 0xff) {
5397 scsi_device_put(sdev1);
5401 scsi_remove_device(sdev1);
5402 scsi_device_put(sdev1);
5409 case MR_EVT_LD_CREATED:
5410 megasas_get_ld_list(instance);
5411 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5413 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5416 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5418 sdev1 = scsi_device_lookup(host,
5419 i+MEGASAS_MAX_LD_CHANNELS,
5422 if (instance->ld_ids[ld_index] !=
5425 scsi_add_device(host,
5431 scsi_device_put(sdev1);
5437 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
5438 case MR_EVT_FOREIGN_CFG_IMPORTED:
5439 case MR_EVT_LD_STATE_CHANGE:
5447 printk(KERN_ERR "invalid evt_detail!\n");
5453 printk(KERN_INFO "scanning ...\n");
5454 megasas_get_pd_list(instance);
5455 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5456 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5457 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
5458 sdev1 = scsi_device_lookup(host, i, j, 0);
5459 if (instance->pd_list[pd_index].driveState ==
5460 MR_PD_STATE_SYSTEM) {
5462 scsi_add_device(host, i, j, 0);
5465 scsi_device_put(sdev1);
5468 scsi_remove_device(sdev1);
5469 scsi_device_put(sdev1);
5475 megasas_get_ld_list(instance);
5476 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5477 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5479 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5481 sdev1 = scsi_device_lookup(host,
5482 i+MEGASAS_MAX_LD_CHANNELS, j, 0);
5483 if (instance->ld_ids[ld_index] != 0xff) {
5485 scsi_add_device(host,
5489 scsi_device_put(sdev1);
5493 scsi_remove_device(sdev1);
5494 scsi_device_put(sdev1);
5501 if ( instance->aen_cmd != NULL ) {
5506 seq_num = instance->evt_detail->seq_num + 1;
5508 /* Register AEN with FW for latest sequence number plus 1 */
5509 class_locale.members.reserved = 0;
5510 class_locale.members.locale = MR_EVT_LOCALE_ALL;
5511 class_locale.members.class = MR_EVT_CLASS_DEBUG;
5512 mutex_lock(&instance->aen_mutex);
5513 error = megasas_register_aen(instance, seq_num,
5515 mutex_unlock(&instance->aen_mutex);
5518 printk(KERN_ERR "register aen failed error %x\n", error);
5524 static DRIVER_ATTR(poll_mode_io, S_IRUGO|S_IWUSR,
5525 megasas_sysfs_show_poll_mode_io,
5526 megasas_sysfs_set_poll_mode_io);
5529 * megasas_init - Driver load entry point
5531 static int __init megasas_init(void)
5536 * Announce driver version and other information
5538 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION,
5539 MEGASAS_EXT_VERSION);
5541 spin_lock_init(&poll_aen_lock);
5543 support_poll_for_event = 2;
5544 support_device_change = 1;
5546 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
5549 * Register character device node
5551 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
5554 printk(KERN_DEBUG "megasas: failed to open device node\n");
5558 megasas_mgmt_majorno = rval;
5561 * Register ourselves as PCI hotplug module
5563 rval = pci_register_driver(&megasas_pci_driver);
5566 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n");
5570 rval = driver_create_file(&megasas_pci_driver.driver,
5571 &driver_attr_version);
5573 goto err_dcf_attr_ver;
5574 rval = driver_create_file(&megasas_pci_driver.driver,
5575 &driver_attr_release_date);
5577 goto err_dcf_rel_date;
5579 rval = driver_create_file(&megasas_pci_driver.driver,
5580 &driver_attr_support_poll_for_event);
5582 goto err_dcf_support_poll_for_event;
5584 rval = driver_create_file(&megasas_pci_driver.driver,
5585 &driver_attr_dbg_lvl);
5587 goto err_dcf_dbg_lvl;
5588 rval = driver_create_file(&megasas_pci_driver.driver,
5589 &driver_attr_poll_mode_io);
5591 goto err_dcf_poll_mode_io;
5593 rval = driver_create_file(&megasas_pci_driver.driver,
5594 &driver_attr_support_device_change);
5596 goto err_dcf_support_device_change;
5600 err_dcf_support_device_change:
5601 driver_remove_file(&megasas_pci_driver.driver,
5602 &driver_attr_poll_mode_io);
5604 err_dcf_poll_mode_io:
5605 driver_remove_file(&megasas_pci_driver.driver,
5606 &driver_attr_dbg_lvl);
5608 driver_remove_file(&megasas_pci_driver.driver,
5609 &driver_attr_support_poll_for_event);
5611 err_dcf_support_poll_for_event:
5612 driver_remove_file(&megasas_pci_driver.driver,
5613 &driver_attr_release_date);
5616 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
5618 pci_unregister_driver(&megasas_pci_driver);
5620 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5625 * megasas_exit - Driver unload entry point
5627 static void __exit megasas_exit(void)
5629 driver_remove_file(&megasas_pci_driver.driver,
5630 &driver_attr_poll_mode_io);
5631 driver_remove_file(&megasas_pci_driver.driver,
5632 &driver_attr_dbg_lvl);
5633 driver_remove_file(&megasas_pci_driver.driver,
5634 &driver_attr_support_poll_for_event);
5635 driver_remove_file(&megasas_pci_driver.driver,
5636 &driver_attr_support_device_change);
5637 driver_remove_file(&megasas_pci_driver.driver,
5638 &driver_attr_release_date);
5639 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
5641 pci_unregister_driver(&megasas_pci_driver);
5642 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5645 module_init(megasas_init);
5646 module_exit(megasas_exit);