drivers/scsi/ipr.c

   1 /*
   2  * ipr.c -- driver for IBM Power Linux RAID adapters
   3  *
   4  * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
   5  *
   6  * Copyright (C) 2003, 2004 IBM Corporation
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 /*
  25  * Notes:
  26  *
  27  * This driver is used to control the following SCSI adapters:
  28  *
  29  * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
  30  *
  31  * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
  32  *              PCI-X Dual Channel Ultra 320 SCSI Adapter
  33  *              PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
  34  *              Embedded SCSI adapter on p615 and p655 systems
  35  *
  36  * Supported Hardware Features:
  37  *      - Ultra 320 SCSI controller
  38  *      - PCI-X host interface
  39  *      - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
  40  *      - Non-Volatile Write Cache
  41  *      - Supports attachment of non-RAID disks, tape, and optical devices
  42  *      - RAID Levels 0, 5, 10
  43  *      - Hot spare
  44  *      - Background Parity Checking
  45  *      - Background Data Scrubbing
  46  *      - Ability to increase the capacity of an existing RAID 5 disk array
  47  *              by adding disks
  48  *
  49  * Driver Features:
  50  *      - Tagged command queuing
  51  *      - Adapter microcode download
  52  *      - PCI hot plug
  53  *      - SCSI device hot plug
  54  *
  55  */
  56
  57 #include <linux/fs.h>
  58 #include <linux/init.h>
  59 #include <linux/types.h>
  60 #include <linux/errno.h>
  61 #include <linux/kernel.h>
  62 #include <linux/slab.h>
  63 #include <linux/ioport.h>
  64 #include <linux/delay.h>
  65 #include <linux/pci.h>
  66 #include <linux/wait.h>
  67 #include <linux/spinlock.h>
  68 #include <linux/sched.h>
  69 #include <linux/interrupt.h>
  70 #include <linux/blkdev.h>
  71 #include <linux/firmware.h>
  72 #include <linux/module.h>
  73 #include <linux/moduleparam.h>
  74 #include <linux/libata.h>
  75 #include <linux/hdreg.h>
  76 #include <linux/reboot.h>
  77 #include <linux/stringify.h>
  78 #include <asm/io.h>
  79 #include <asm/irq.h>
  80 #include <asm/processor.h>
  81 #include <scsi/scsi.h>
  82 #include <scsi/scsi_host.h>
  83 #include <scsi/scsi_tcq.h>
  84 #include <scsi/scsi_eh.h>
  85 #include <scsi/scsi_cmnd.h>
  86 #include "ipr.h"
  87
  88 /*
  89  *   Global Data
  90  */
  91 static LIST_HEAD(ipr_ioa_head);
  92 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
  93 static unsigned int ipr_max_speed = 1;
  94 static int ipr_testmode = 0;
  95 static unsigned int ipr_fastfail = 0;
  96 static unsigned int ipr_transop_timeout = 0;
  97 static unsigned int ipr_debug = 0;
  98 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
  99 static unsigned int ipr_dual_ioa_raid = 1;
 100 static DEFINE_SPINLOCK(ipr_driver_lock);
 101
 102 /* This table describes the differences between DMA controller chips */
 103 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
 104         { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
 105                 .mailbox = 0x0042C,
 106                 .cache_line_size = 0x20,
 107                 {
 108                         .set_interrupt_mask_reg = 0x0022C,
 109                         .clr_interrupt_mask_reg = 0x00230,
 110                         .clr_interrupt_mask_reg32 = 0x00230,
 111                         .sense_interrupt_mask_reg = 0x0022C,
 112                         .sense_interrupt_mask_reg32 = 0x0022C,
 113                         .clr_interrupt_reg = 0x00228,
 114                         .clr_interrupt_reg32 = 0x00228,
 115                         .sense_interrupt_reg = 0x00224,
 116                         .sense_interrupt_reg32 = 0x00224,
 117                         .ioarrin_reg = 0x00404,
 118                         .sense_uproc_interrupt_reg = 0x00214,
 119                         .sense_uproc_interrupt_reg32 = 0x00214,
 120                         .set_uproc_interrupt_reg = 0x00214,
 121                         .set_uproc_interrupt_reg32 = 0x00214,
 122                         .clr_uproc_interrupt_reg = 0x00218,
 123                         .clr_uproc_interrupt_reg32 = 0x00218
 124                 }
 125         },
 126         { /* Snipe and Scamp */
 127                 .mailbox = 0x0052C,
 128                 .cache_line_size = 0x20,
 129                 {
 130                         .set_interrupt_mask_reg = 0x00288,
 131                         .clr_interrupt_mask_reg = 0x0028C,
 132                         .clr_interrupt_mask_reg32 = 0x0028C,
 133                         .sense_interrupt_mask_reg = 0x00288,
 134                         .sense_interrupt_mask_reg32 = 0x00288,
 135                         .clr_interrupt_reg = 0x00284,
 136                         .clr_interrupt_reg32 = 0x00284,
 137                         .sense_interrupt_reg = 0x00280,
 138                         .sense_interrupt_reg32 = 0x00280,
 139                         .ioarrin_reg = 0x00504,
 140                         .sense_uproc_interrupt_reg = 0x00290,
 141                         .sense_uproc_interrupt_reg32 = 0x00290,
 142                         .set_uproc_interrupt_reg = 0x00290,
 143                         .set_uproc_interrupt_reg32 = 0x00290,
 144                         .clr_uproc_interrupt_reg = 0x00294,
 145                         .clr_uproc_interrupt_reg32 = 0x00294
 146                 }
 147         },
 148         { /* CRoC */
 149                 .mailbox = 0x00044,
 150                 .cache_line_size = 0x20,
 151                 {
 152                         .set_interrupt_mask_reg = 0x00010,
 153                         .clr_interrupt_mask_reg = 0x00018,
 154                         .clr_interrupt_mask_reg32 = 0x0001C,
 155                         .sense_interrupt_mask_reg = 0x00010,
 156                         .sense_interrupt_mask_reg32 = 0x00014,
 157                         .clr_interrupt_reg = 0x00008,
 158                         .clr_interrupt_reg32 = 0x0000C,
 159                         .sense_interrupt_reg = 0x00000,
 160                         .sense_interrupt_reg32 = 0x00004,
 161                         .ioarrin_reg = 0x00070,
 162                         .sense_uproc_interrupt_reg = 0x00020,
 163                         .sense_uproc_interrupt_reg32 = 0x00024,
 164                         .set_uproc_interrupt_reg = 0x00020,
 165                         .set_uproc_interrupt_reg32 = 0x00024,
 166                         .clr_uproc_interrupt_reg = 0x00028,
 167                         .clr_uproc_interrupt_reg32 = 0x0002C,
 168                         .init_feedback_reg = 0x0005C,
 169                         .dump_addr_reg = 0x00064,
 170                         .dump_data_reg = 0x00068,
 171                         .endian_swap_reg = 0x00084
 172                 }
 173         },
 174 };
 175
 176 static const struct ipr_chip_t ipr_chip[] = {
 177         { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 178         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 179         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 180         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 181         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 182         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
 183         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
 184         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
 185         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
 186 };
 187
 188 static int ipr_max_bus_speeds [] = {
 189         IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
 190 };
 191
 192 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
 193 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
 194 module_param_named(max_speed, ipr_max_speed, uint, 0);
 195 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
 196 module_param_named(log_level, ipr_log_level, uint, 0);
 197 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
 198 module_param_named(testmode, ipr_testmode, int, 0);
 199 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
 200 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
 201 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
 202 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
 203 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
 204 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
 205 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
 206 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
 207 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
 208 module_param_named(max_devs, ipr_max_devs, int, 0);
 209 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
 210                  "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
 211 MODULE_LICENSE("GPL");
 212 MODULE_VERSION(IPR_DRIVER_VERSION);
 213
 214 /*  A constant array of IOASCs/URCs/Error Messages */
 215 static const
 216 struct ipr_error_table_t ipr_error_table[] = {
 217         {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
 218         "8155: An unknown error was received"},
 219         {0x00330000, 0, 0,
 220         "Soft underlength error"},
 221         {0x005A0000, 0, 0,
 222         "Command to be cancelled not found"},
 223         {0x00808000, 0, 0,
 224         "Qualified success"},
 225         {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
 226         "FFFE: Soft device bus error recovered by the IOA"},
 227         {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
 228         "4101: Soft device bus fabric error"},
 229         {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
 230         "FFFC: Logical block guard error recovered by the device"},
 231         {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
 232         "FFFC: Logical block reference tag error recovered by the device"},
 233         {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
 234         "4171: Recovered scatter list tag / sequence number error"},
 235         {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
 236         "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
 237         {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
 238         "4171: Recovered logical block sequence number error on IOA to Host transfer"},
 239         {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
 240         "FFFD: Recovered logical block reference tag error detected by the IOA"},
 241         {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
 242         "FFFD: Logical block guard error recovered by the IOA"},
 243         {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
 244         "FFF9: Device sector reassign successful"},
 245         {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
 246         "FFF7: Media error recovered by device rewrite procedures"},
 247         {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
 248         "7001: IOA sector reassignment successful"},
 249         {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
 250         "FFF9: Soft media error. Sector reassignment recommended"},
 251         {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
 252         "FFF7: Media error recovered by IOA rewrite procedures"},
 253         {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
 254         "FF3D: Soft PCI bus error recovered by the IOA"},
 255         {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
 256         "FFF6: Device hardware error recovered by the IOA"},
 257         {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
 258         "FFF6: Device hardware error recovered by the device"},
 259         {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
 260         "FF3D: Soft IOA error recovered by the IOA"},
 261         {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
 262         "FFFA: Undefined device response recovered by the IOA"},
 263         {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
 264         "FFF6: Device bus error, message or command phase"},
 265         {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
 266         "FFFE: Task Management Function failed"},
 267         {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
 268         "FFF6: Failure prediction threshold exceeded"},
 269         {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
 270         "8009: Impending cache battery pack failure"},
 271         {0x02040400, 0, 0,
 272         "34FF: Disk device format in progress"},
 273         {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
 274         "9070: IOA requested reset"},
 275         {0x023F0000, 0, 0,
 276         "Synchronization required"},
 277         {0x024E0000, 0, 0,
 278         "No ready, IOA shutdown"},
 279         {0x025A0000, 0, 0,
 280         "Not ready, IOA has been shutdown"},
 281         {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
 282         "3020: Storage subsystem configuration error"},
 283         {0x03110B00, 0, 0,
 284         "FFF5: Medium error, data unreadable, recommend reassign"},
 285         {0x03110C00, 0, 0,
 286         "7000: Medium error, data unreadable, do not reassign"},
 287         {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
 288         "FFF3: Disk media format bad"},
 289         {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
 290         "3002: Addressed device failed to respond to selection"},
 291         {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
 292         "3100: Device bus error"},
 293         {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
 294         "3109: IOA timed out a device command"},
 295         {0x04088000, 0, 0,
 296         "3120: SCSI bus is not operational"},
 297         {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
 298         "4100: Hard device bus fabric error"},
 299         {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
 300         "310C: Logical block guard error detected by the device"},
 301         {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
 302         "310C: Logical block reference tag error detected by the device"},
 303         {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
 304         "4170: Scatter list tag / sequence number error"},
 305         {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
 306         "8150: Logical block CRC error on IOA to Host transfer"},
 307         {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
 308         "4170: Logical block sequence number error on IOA to Host transfer"},
 309         {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
 310         "310D: Logical block reference tag error detected by the IOA"},
 311         {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
 312         "310D: Logical block guard error detected by the IOA"},
 313         {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
 314         "9000: IOA reserved area data check"},
 315         {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
 316         "9001: IOA reserved area invalid data pattern"},
 317         {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
 318         "9002: IOA reserved area LRC error"},
 319         {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
 320         "Hardware Error, IOA metadata access error"},
 321         {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
 322         "102E: Out of alternate sectors for disk storage"},
 323         {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
 324         "FFF4: Data transfer underlength error"},
 325         {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
 326         "FFF4: Data transfer overlength error"},
 327         {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
 328         "3400: Logical unit failure"},
 329         {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
 330         "FFF4: Device microcode is corrupt"},
 331         {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
 332         "8150: PCI bus error"},
 333         {0x04430000, 1, 0,
 334         "Unsupported device bus message received"},
 335         {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
 336         "FFF4: Disk device problem"},
 337         {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
 338         "8150: Permanent IOA failure"},
 339         {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
 340         "3010: Disk device returned wrong response to IOA"},
 341         {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
 342         "8151: IOA microcode error"},
 343         {0x04448500, 0, 0,
 344         "Device bus status error"},
 345         {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
 346         "8157: IOA error requiring IOA reset to recover"},
 347         {0x04448700, 0, 0,
 348         "ATA device status error"},
 349         {0x04490000, 0, 0,
 350         "Message reject received from the device"},
 351         {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
 352         "8008: A permanent cache battery pack failure occurred"},
 353         {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
 354         "9090: Disk unit has been modified after the last known status"},
 355         {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
 356         "9081: IOA detected device error"},
 357         {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
 358         "9082: IOA detected device error"},
 359         {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
 360         "3110: Device bus error, message or command phase"},
 361         {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
 362         "3110: SAS Command / Task Management Function failed"},
 363         {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
 364         "9091: Incorrect hardware configuration change has been detected"},
 365         {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
 366         "9073: Invalid multi-adapter configuration"},
 367         {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
 368         "4010: Incorrect connection between cascaded expanders"},
 369         {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
 370         "4020: Connections exceed IOA design limits"},
 371         {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
 372         "4030: Incorrect multipath connection"},
 373         {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
 374         "4110: Unsupported enclosure function"},
 375         {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
 376         "FFF4: Command to logical unit failed"},
 377         {0x05240000, 1, 0,
 378         "Illegal request, invalid request type or request packet"},
 379         {0x05250000, 0, 0,
 380         "Illegal request, invalid resource handle"},
 381         {0x05258000, 0, 0,
 382         "Illegal request, commands not allowed to this device"},
 383         {0x05258100, 0, 0,
 384         "Illegal request, command not allowed to a secondary adapter"},
 385         {0x05258200, 0, 0,
 386         "Illegal request, command not allowed to a non-optimized resource"},
 387         {0x05260000, 0, 0,
 388         "Illegal request, invalid field in parameter list"},
 389         {0x05260100, 0, 0,
 390         "Illegal request, parameter not supported"},
 391         {0x05260200, 0, 0,
 392         "Illegal request, parameter value invalid"},
 393         {0x052C0000, 0, 0,
 394         "Illegal request, command sequence error"},
 395         {0x052C8000, 1, 0,
 396         "Illegal request, dual adapter support not enabled"},
 397         {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
 398         "9031: Array protection temporarily suspended, protection resuming"},
 399         {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
 400         "9040: Array protection temporarily suspended, protection resuming"},
 401         {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
 402         "3140: Device bus not ready to ready transition"},
 403         {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
 404         "FFFB: SCSI bus was reset"},
 405         {0x06290500, 0, 0,
 406         "FFFE: SCSI bus transition to single ended"},
 407         {0x06290600, 0, 0,
 408         "FFFE: SCSI bus transition to LVD"},
 409         {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
 410         "FFFB: SCSI bus was reset by another initiator"},
 411         {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
 412         "3029: A device replacement has occurred"},
 413         {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
 414         "9051: IOA cache data exists for a missing or failed device"},
 415         {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
 416         "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
 417         {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
 418         "9025: Disk unit is not supported at its physical location"},
 419         {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
 420         "3020: IOA detected a SCSI bus configuration error"},
 421         {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
 422         "3150: SCSI bus configuration error"},
 423         {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
 424         "9074: Asymmetric advanced function disk configuration"},
 425         {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
 426         "4040: Incomplete multipath connection between IOA and enclosure"},
 427         {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
 428         "4041: Incomplete multipath connection between enclosure and device"},
 429         {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
 430         "9075: Incomplete multipath connection between IOA and remote IOA"},
 431         {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
 432         "9076: Configuration error, missing remote IOA"},
 433         {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
 434         "4050: Enclosure does not support a required multipath function"},
 435         {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
 436         "4070: Logically bad block written on device"},
 437         {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
 438         "9041: Array protection temporarily suspended"},
 439         {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
 440         "9042: Corrupt array parity detected on specified device"},
 441         {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
 442         "9030: Array no longer protected due to missing or failed disk unit"},
 443         {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
 444         "9071: Link operational transition"},
 445         {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
 446         "9072: Link not operational transition"},
 447         {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
 448         "9032: Array exposed but still protected"},
 449         {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
 450         "70DD: Device forced failed by disrupt device command"},
 451         {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
 452         "4061: Multipath redundancy level got better"},
 453         {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
 454         "4060: Multipath redundancy level got worse"},
 455         {0x07270000, 0, 0,
 456         "Failure due to other device"},
 457         {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
 458         "9008: IOA does not support functions expected by devices"},
 459         {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
 460         "9010: Cache data associated with attached devices cannot be found"},
 461         {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
 462         "9011: Cache data belongs to devices other than those attached"},
 463         {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
 464         "9020: Array missing 2 or more devices with only 1 device present"},
 465         {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
 466         "9021: Array missing 2 or more devices with 2 or more devices present"},
 467         {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
 468         "9022: Exposed array is missing a required device"},
 469         {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
 470         "9023: Array member(s) not at required physical locations"},
 471         {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
 472         "9024: Array not functional due to present hardware configuration"},
 473         {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
 474         "9026: Array not functional due to present hardware configuration"},
 475         {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
 476         "9027: Array is missing a device and parity is out of sync"},
 477         {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
 478         "9028: Maximum number of arrays already exist"},
 479         {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
 480         "9050: Required cache data cannot be located for a disk unit"},
 481         {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
 482         "9052: Cache data exists for a device that has been modified"},
 483         {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
 484         "9054: IOA resources not available due to previous problems"},
 485         {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
 486         "9092: Disk unit requires initialization before use"},
 487         {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
 488         "9029: Incorrect hardware configuration change has been detected"},
 489         {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
 490         "9060: One or more disk pairs are missing from an array"},
 491         {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
 492         "9061: One or more disks are missing from an array"},
 493         {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
 494         "9062: One or more disks are missing from an array"},
 495         {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
 496         "9063: Maximum number of functional arrays has been exceeded"},
 497         {0x0B260000, 0, 0,
 498         "Aborted command, invalid descriptor"},
 499         {0x0B5A0000, 0, 0,
 500         "Command terminated by host"}
 501 };
 502
 503 static const struct ipr_ses_table_entry ipr_ses_table[] = {
 504         { "2104-DL1        ", "XXXXXXXXXXXXXXXX", 80 },
 505         { "2104-TL1        ", "XXXXXXXXXXXXXXXX", 80 },
 506         { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
 507         { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
 508         { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
 509         { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
 510         { "2104-DU3        ", "XXXXXXXXXXXXXXXX", 160 },
 511         { "2104-TU3        ", "XXXXXXXXXXXXXXXX", 160 },
 512         { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
 513         { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
 514         { "St  V1S2        ", "XXXXXXXXXXXXXXXX", 160 },
 515         { "HSBPD4M  PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
 516         { "VSBPD1H   U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
 517 };
 518
 519 /*
 520  *  Function Prototypes
 521  */
 522 static int ipr_reset_alert(struct ipr_cmnd *);
 523 static void ipr_process_ccn(struct ipr_cmnd *);
 524 static void ipr_process_error(struct ipr_cmnd *);
 525 static void ipr_reset_ioa_job(struct ipr_cmnd *);
 526 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
 527                                    enum ipr_shutdown_type);
 528
 529 #ifdef CONFIG_SCSI_IPR_TRACE
 530 /**
 531  * ipr_trc_hook - Add a trace entry to the driver trace
 532  * @ipr_cmd:    ipr command struct
 533  * @type:               trace type
 534  * @add_data:   additional data
 535  *
 536  * Return value:
 537  *      none
 538  **/
 539 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
 540                          u8 type, u32 add_data)
 541 {
 542         struct ipr_trace_entry *trace_entry;
 543         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 544
 545         trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
 546         trace_entry->time = jiffies;
 547         trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
 548         trace_entry->type = type;
 549         if (ipr_cmd->ioa_cfg->sis64)
 550                 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
 551         else
 552                 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
 553         trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
 554         trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
 555         trace_entry->u.add_data = add_data;
 556 }
 557 #else
 558 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
 559 #endif
 560
 561 /**
 562  * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
 563  * @ipr_cmd:    ipr command struct
 564  *
 565  * Return value:
 566  *      none
 567  **/
 568 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
 569 {
 570         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
 571         struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
 572         struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
 573         dma_addr_t dma_addr = ipr_cmd->dma_addr;
 574
 575         memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
 576         ioarcb->data_transfer_length = 0;
 577         ioarcb->read_data_transfer_length = 0;
 578         ioarcb->ioadl_len = 0;
 579         ioarcb->read_ioadl_len = 0;
 580
 581         if (ipr_cmd->ioa_cfg->sis64) {
 582                 ioarcb->u.sis64_addr_data.data_ioadl_addr =
 583                         cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
 584                 ioasa64->u.gata.status = 0;
 585         } else {
 586                 ioarcb->write_ioadl_addr =
 587                         cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
 588                 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
 589                 ioasa->u.gata.status = 0;
 590         }
 591
 592         ioasa->hdr.ioasc = 0;
 593         ioasa->hdr.residual_data_len = 0;
 594         ipr_cmd->scsi_cmd = NULL;
 595         ipr_cmd->qc = NULL;
 596         ipr_cmd->sense_buffer[0] = 0;
 597         ipr_cmd->dma_use_sg = 0;
 598 }
 599
 600 /**
 601  * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
 602  * @ipr_cmd:    ipr command struct
 603  *
 604  * Return value:
 605  *      none
 606  **/
 607 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
 608 {
 609         ipr_reinit_ipr_cmnd(ipr_cmd);
 610         ipr_cmd->u.scratch = 0;
 611         ipr_cmd->sibling = NULL;
 612         init_timer(&ipr_cmd->timer);
 613 }
 614
 615 /**
 616  * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
 617  * @ioa_cfg:    ioa config struct
 618  *
 619  * Return value:
 620  *      pointer to ipr command struct
 621  **/
 622 static
 623 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
 624 {
 625         struct ipr_cmnd *ipr_cmd;
 626
 627         ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
 628         list_del(&ipr_cmd->queue);
 629         ipr_init_ipr_cmnd(ipr_cmd);
 630
 631         return ipr_cmd;
 632 }
 633
 634 /**
 635  * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
 636  * @ioa_cfg:    ioa config struct
 637  * @clr_ints:     interrupts to clear
 638  *
 639  * This function masks all interrupts on the adapter, then clears the
 640  * interrupts specified in the mask
 641  *
 642  * Return value:
 643  *      none
 644  **/
 645 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
 646                                           u32 clr_ints)
 647 {
 648         volatile u32 int_reg;
 649
 650         /* Stop new interrupts */
 651         ioa_cfg->allow_interrupts = 0;
 652
 653         /* Set interrupt mask to stop all new interrupts */
 654         if (ioa_cfg->sis64)
 655                 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
 656         else
 657                 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
 658
 659         /* Clear any pending interrupts */
 660         if (ioa_cfg->sis64)
 661                 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
 662         writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
 663         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
 664 }
 665
 666 /**
 667  * ipr_save_pcix_cmd_reg - Save PCI-X command register
 668  * @ioa_cfg:    ioa config struct
 669  *
 670  * Return value:
 671  *      0 on success / -EIO on failure
 672  **/
 673 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
 674 {
 675         int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
 676
 677         if (pcix_cmd_reg == 0)
 678                 return 0;
 679
 680         if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
 681                                  &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
 682                 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
 683                 return -EIO;
 684         }
 685
 686         ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
 687         return 0;
 688 }
 689
 690 /**
 691  * ipr_set_pcix_cmd_reg - Setup PCI-X command register
 692  * @ioa_cfg:    ioa config struct
 693  *
 694  * Return value:
 695  *      0 on success / -EIO on failure
 696  **/
 697 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
 698 {
 699         int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
 700
 701         if (pcix_cmd_reg) {
 702                 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
 703                                           ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
 704                         dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
 705                         return -EIO;
 706                 }
 707         }
 708
 709         return 0;
 710 }
 711
 712 /**
 713  * ipr_sata_eh_done - done function for aborted SATA commands
 714  * @ipr_cmd:    ipr command struct
 715  *
 716  * This function is invoked for ops generated to SATA
 717  * devices which are being aborted.
 718  *
 719  * Return value:
 720  *      none
 721  **/
 722 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
 723 {
 724         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 725         struct ata_queued_cmd *qc = ipr_cmd->qc;
 726         struct ipr_sata_port *sata_port = qc->ap->private_data;
 727
 728         qc->err_mask |= AC_ERR_OTHER;
 729         sata_port->ioasa.status |= ATA_BUSY;
 730         list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
 731         ata_qc_complete(qc);
 732 }
 733
 734 /**
 735  * ipr_scsi_eh_done - mid-layer done function for aborted ops
 736  * @ipr_cmd:    ipr command struct
 737  *
 738  * This function is invoked by the interrupt handler for
 739  * ops generated by the SCSI mid-layer which are being aborted.
 740  *
 741  * Return value:
 742  *      none
 743  **/
 744 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
 745 {
 746         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 747         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
 748
 749         scsi_cmd->result |= (DID_ERROR << 16);
 750
 751         scsi_dma_unmap(ipr_cmd->scsi_cmd);
 752         scsi_cmd->scsi_done(scsi_cmd);
 753         list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
 754 }
 755
 756 /**
 757  * ipr_fail_all_ops - Fails all outstanding ops.
 758  * @ioa_cfg:    ioa config struct
 759  *
 760  * This function fails all outstanding ops.
 761  *
 762  * Return value:
 763  *      none
 764  **/
 765 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
 766 {
 767         struct ipr_cmnd *ipr_cmd, *temp;
 768
 769         ENTER;
 770         list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
 771                 list_del(&ipr_cmd->queue);
 772
 773                 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
 774                 ipr_cmd->s.ioasa.hdr.ilid = cpu_to_be32(IPR_DRIVER_ILID);
 775
 776                 if (ipr_cmd->scsi_cmd)
 777                         ipr_cmd->done = ipr_scsi_eh_done;
 778                 else if (ipr_cmd->qc)
 779                         ipr_cmd->done = ipr_sata_eh_done;
 780
 781                 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
 782                 del_timer(&ipr_cmd->timer);
 783                 ipr_cmd->done(ipr_cmd);
 784         }
 785
 786         LEAVE;
 787 }
 788
 789 /**
 790  * ipr_send_command -  Send driver initiated requests.
 791  * @ipr_cmd:            ipr command struct
 792  *
 793  * This function sends a command to the adapter using the correct write call.
 794  * In the case of sis64, calculate the ioarcb size required. Then or in the
 795  * appropriate bits.
 796  *
 797  * Return value:
 798  *      none
 799  **/
 800 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
 801 {
 802         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 803         dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
 804
 805         if (ioa_cfg->sis64) {
 806                 /* The default size is 256 bytes */
 807                 send_dma_addr |= 0x1;
 808
 809                 /* If the number of ioadls * size of ioadl > 128 bytes,
 810                    then use a 512 byte ioarcb */
 811                 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
 812                         send_dma_addr |= 0x4;
 813                 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
 814         } else
 815                 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
 816 }
 817
 818 /**
 819  * ipr_do_req -  Send driver initiated requests.
 820  * @ipr_cmd:            ipr command struct
 821  * @done:                       done function
 822  * @timeout_func:       timeout function
 823  * @timeout:            timeout value
 824  *
 825  * This function sends the specified command to the adapter with the
 826  * timeout given. The done function is invoked on command completion.
 827  *
 828  * Return value:
 829  *      none
 830  **/
 831 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
 832                        void (*done) (struct ipr_cmnd *),
 833                        void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
 834 {
 835         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 836
 837         list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
 838
 839         ipr_cmd->done = done;
 840
 841         ipr_cmd->timer.data = (unsigned long) ipr_cmd;
 842         ipr_cmd->timer.expires = jiffies + timeout;
 843         ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
 844
 845         add_timer(&ipr_cmd->timer);
 846
 847         ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
 848
 849         mb();
 850
 851         ipr_send_command(ipr_cmd);
 852 }
 853
 854 /**
 855  * ipr_internal_cmd_done - Op done function for an internally generated op.
 856  * @ipr_cmd:    ipr command struct
 857  *
 858  * This function is the op done function for an internally generated,
 859  * blocking op. It simply wakes the sleeping thread.
 860  *
 861  * Return value:
 862  *      none
 863  **/
 864 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
 865 {
 866         if (ipr_cmd->sibling)
 867                 ipr_cmd->sibling = NULL;
 868         else
 869                 complete(&ipr_cmd->completion);
 870 }
 871
 872 /**
 873  * ipr_init_ioadl - initialize the ioadl for the correct SIS type
 874  * @ipr_cmd:    ipr command struct
 875  * @dma_addr:   dma address
 876  * @len:        transfer length
 877  * @flags:      ioadl flag value
 878  *
 879  * This function initializes an ioadl in the case where there is only a single
 880  * descriptor.
 881  *
 882  * Return value:
 883  *      nothing
 884  **/
 885 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
 886                            u32 len, int flags)
 887 {
 888         struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
 889         struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
 890
 891         ipr_cmd->dma_use_sg = 1;
 892
 893         if (ipr_cmd->ioa_cfg->sis64) {
 894                 ioadl64->flags = cpu_to_be32(flags);
 895                 ioadl64->data_len = cpu_to_be32(len);
 896                 ioadl64->address = cpu_to_be64(dma_addr);
 897
 898                 ipr_cmd->ioarcb.ioadl_len =
 899                         cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
 900                 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
 901         } else {
 902                 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
 903                 ioadl->address = cpu_to_be32(dma_addr);
 904
 905                 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
 906                         ipr_cmd->ioarcb.read_ioadl_len =
 907                                 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
 908                         ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
 909                 } else {
 910                         ipr_cmd->ioarcb.ioadl_len =
 911                                 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
 912                         ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
 913                 }
 914         }
 915 }
 916
 917 /**
 918  * ipr_send_blocking_cmd - Send command and sleep on its completion.
 919  * @ipr_cmd:    ipr command struct
 920  * @timeout_func:       function to invoke if command times out
 921  * @timeout:    timeout
 922  *
 923  * Return value:
 924  *      none
 925  **/
 926 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
 927                                   void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
 928                                   u32 timeout)
 929 {
 930         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 931
 932         init_completion(&ipr_cmd->completion);
 933         ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
 934
 935         spin_unlock_irq(ioa_cfg->host->host_lock);
 936         wait_for_completion(&ipr_cmd->completion);
 937         spin_lock_irq(ioa_cfg->host->host_lock);
 938 }
 939
 940 /**
 941  * ipr_send_hcam - Send an HCAM to the adapter.
 942  * @ioa_cfg:    ioa config struct
 943  * @type:               HCAM type
 944  * @hostrcb:    hostrcb struct
 945  *
 946  * This function will send a Host Controlled Async command to the adapter.
 947  * If HCAMs are currently not allowed to be issued to the adapter, it will
 948  * place the hostrcb on the free queue.
 949  *
 950  * Return value:
 951  *      none
 952  **/
 953 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
 954                           struct ipr_hostrcb *hostrcb)
 955 {
 956         struct ipr_cmnd *ipr_cmd;
 957         struct ipr_ioarcb *ioarcb;
 958
 959         if (ioa_cfg->allow_cmds) {
 960                 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
 961                 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
 962                 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
 963
 964                 ipr_cmd->u.hostrcb = hostrcb;
 965                 ioarcb = &ipr_cmd->ioarcb;
 966
 967                 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
 968                 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
 969                 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
 970                 ioarcb->cmd_pkt.cdb[1] = type;
 971                 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
 972                 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
 973
 974                 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
 975                                sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
 976
 977                 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
 978                         ipr_cmd->done = ipr_process_ccn;
 979                 else
 980                         ipr_cmd->done = ipr_process_error;
 981
 982                 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
 983
 984                 mb();
 985
 986                 ipr_send_command(ipr_cmd);
 987         } else {
 988                 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
 989         }
 990 }
 991
 992 /**
 993  * ipr_update_ata_class - Update the ata class in the resource entry
 994  * @res:        resource entry struct
 995  * @proto:      cfgte device bus protocol value
 996  *
 997  * Return value:
 998  *      none
 999  **/
1000 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1001 {
1002         switch(proto) {
1003         case IPR_PROTO_SATA:
1004         case IPR_PROTO_SAS_STP:
1005                 res->ata_class = ATA_DEV_ATA;
1006                 break;
1007         case IPR_PROTO_SATA_ATAPI:
1008         case IPR_PROTO_SAS_STP_ATAPI:
1009                 res->ata_class = ATA_DEV_ATAPI;
1010                 break;
1011         default:
1012                 res->ata_class = ATA_DEV_UNKNOWN;
1013                 break;
1014         };
1015 }
1016
1017 /**
1018  * ipr_init_res_entry - Initialize a resource entry struct.
1019  * @res:        resource entry struct
1020  * @cfgtew:     config table entry wrapper struct
1021  *
1022  * Return value:
1023  *      none
1024  **/
1025 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1026                                struct ipr_config_table_entry_wrapper *cfgtew)
1027 {
1028         int found = 0;
1029         unsigned int proto;
1030         struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1031         struct ipr_resource_entry *gscsi_res = NULL;
1032
1033         res->needs_sync_complete = 0;
1034         res->in_erp = 0;
1035         res->add_to_ml = 0;
1036         res->del_from_ml = 0;
1037         res->resetting_device = 0;
1038         res->sdev = NULL;
1039         res->sata_port = NULL;
1040
1041         if (ioa_cfg->sis64) {
1042                 proto = cfgtew->u.cfgte64->proto;
1043                 res->res_flags = cfgtew->u.cfgte64->res_flags;
1044                 res->qmodel = IPR_QUEUEING_MODEL64(res);
1045                 res->type = cfgtew->u.cfgte64->res_type;
1046
1047                 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1048                         sizeof(res->res_path));
1049
1050                 res->bus = 0;
1051                 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1052                         sizeof(res->dev_lun.scsi_lun));
1053                 res->lun = scsilun_to_int(&res->dev_lun);
1054
1055                 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1056                         list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1057                                 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1058                                         found = 1;
1059                                         res->target = gscsi_res->target;
1060                                         break;
1061                                 }
1062                         }
1063                         if (!found) {
1064                                 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1065                                                                   ioa_cfg->max_devs_supported);
1066                                 set_bit(res->target, ioa_cfg->target_ids);
1067                         }
1068                 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1069                         res->bus = IPR_IOAFP_VIRTUAL_BUS;
1070                         res->target = 0;
1071                 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1072                         res->bus = IPR_ARRAY_VIRTUAL_BUS;
1073                         res->target = find_first_zero_bit(ioa_cfg->array_ids,
1074                                                           ioa_cfg->max_devs_supported);
1075                         set_bit(res->target, ioa_cfg->array_ids);
1076                 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1077                         res->bus = IPR_VSET_VIRTUAL_BUS;
1078                         res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1079                                                           ioa_cfg->max_devs_supported);
1080                         set_bit(res->target, ioa_cfg->vset_ids);
1081                 } else {
1082                         res->target = find_first_zero_bit(ioa_cfg->target_ids,
1083                                                           ioa_cfg->max_devs_supported);
1084                         set_bit(res->target, ioa_cfg->target_ids);
1085                 }
1086         } else {
1087                 proto = cfgtew->u.cfgte->proto;
1088                 res->qmodel = IPR_QUEUEING_MODEL(res);
1089                 res->flags = cfgtew->u.cfgte->flags;
1090                 if (res->flags & IPR_IS_IOA_RESOURCE)
1091                         res->type = IPR_RES_TYPE_IOAFP;
1092                 else
1093                         res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1094
1095                 res->bus = cfgtew->u.cfgte->res_addr.bus;
1096                 res->target = cfgtew->u.cfgte->res_addr.target;
1097                 res->lun = cfgtew->u.cfgte->res_addr.lun;
1098                 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1099         }
1100
1101         ipr_update_ata_class(res, proto);
1102 }
1103
1104 /**
1105  * ipr_is_same_device - Determine if two devices are the same.
1106  * @res:        resource entry struct
1107  * @cfgtew:     config table entry wrapper struct
1108  *
1109  * Return value:
1110  *      1 if the devices are the same / 0 otherwise
1111  **/
1112 static int ipr_is_same_device(struct ipr_resource_entry *res,
1113                               struct ipr_config_table_entry_wrapper *cfgtew)
1114 {
1115         if (res->ioa_cfg->sis64) {
1116                 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1117                                         sizeof(cfgtew->u.cfgte64->dev_id)) &&
1118                         !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1119                                         sizeof(cfgtew->u.cfgte64->lun))) {
1120                         return 1;
1121                 }
1122         } else {
1123                 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1124                     res->target == cfgtew->u.cfgte->res_addr.target &&
1125                     res->lun == cfgtew->u.cfgte->res_addr.lun)
1126                         return 1;
1127         }
1128
1129         return 0;
1130 }
1131
1132 /**
1133  * ipr_format_res_path - Format the resource path for printing.
1134  * @res_path:   resource path
1135  * @buf:        buffer
1136  *
1137  * Return value:
1138  *      pointer to buffer
1139  **/
1140 static char *ipr_format_res_path(u8 *res_path, char *buffer, int len)
1141 {
1142         int i;
1143         char *p = buffer;
1144
1145         *p = '\0';
1146         p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1147         for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1148                 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1149
1150         return buffer;
1151 }
1152
1153 /**
1154  * ipr_update_res_entry - Update the resource entry.
1155  * @res:        resource entry struct
1156  * @cfgtew:     config table entry wrapper struct
1157  *
1158  * Return value:
1159  *      none
1160  **/
1161 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1162                                  struct ipr_config_table_entry_wrapper *cfgtew)
1163 {
1164         char buffer[IPR_MAX_RES_PATH_LENGTH];
1165         unsigned int proto;
1166         int new_path = 0;
1167
1168         if (res->ioa_cfg->sis64) {
1169                 res->flags = cfgtew->u.cfgte64->flags;
1170                 res->res_flags = cfgtew->u.cfgte64->res_flags;
1171                 res->type = cfgtew->u.cfgte64->res_type;
1172
1173                 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1174                         sizeof(struct ipr_std_inq_data));
1175
1176                 res->qmodel = IPR_QUEUEING_MODEL64(res);
1177                 proto = cfgtew->u.cfgte64->proto;
1178                 res->res_handle = cfgtew->u.cfgte64->res_handle;
1179                 res->dev_id = cfgtew->u.cfgte64->dev_id;
1180
1181                 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1182                         sizeof(res->dev_lun.scsi_lun));
1183
1184                 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1185                                         sizeof(res->res_path))) {
1186                         memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1187                                 sizeof(res->res_path));
1188                         new_path = 1;
1189                 }
1190
1191                 if (res->sdev && new_path)
1192                         sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1193                                     ipr_format_res_path(res->res_path, buffer,
1194                                                         sizeof(buffer)));
1195         } else {
1196                 res->flags = cfgtew->u.cfgte->flags;
1197                 if (res->flags & IPR_IS_IOA_RESOURCE)
1198                         res->type = IPR_RES_TYPE_IOAFP;
1199                 else
1200                         res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1201
1202                 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1203                         sizeof(struct ipr_std_inq_data));
1204
1205                 res->qmodel = IPR_QUEUEING_MODEL(res);
1206                 proto = cfgtew->u.cfgte->proto;
1207                 res->res_handle = cfgtew->u.cfgte->res_handle;
1208         }
1209
1210         ipr_update_ata_class(res, proto);
1211 }
1212
1213 /**
1214  * ipr_clear_res_target - Clear the bit in the bit map representing the target
1215  *                        for the resource.
1216  * @res:        resource entry struct
1217  * @cfgtew:     config table entry wrapper struct
1218  *
1219  * Return value:
1220  *      none
1221  **/
1222 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1223 {
1224         struct ipr_resource_entry *gscsi_res = NULL;
1225         struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1226
1227         if (!ioa_cfg->sis64)
1228                 return;
1229
1230         if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1231                 clear_bit(res->target, ioa_cfg->array_ids);
1232         else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1233                 clear_bit(res->target, ioa_cfg->vset_ids);
1234         else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1235                 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1236                         if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1237                                 return;
1238                 clear_bit(res->target, ioa_cfg->target_ids);
1239
1240         } else if (res->bus == 0)
1241                 clear_bit(res->target, ioa_cfg->target_ids);
1242 }
1243
1244 /**
1245  * ipr_handle_config_change - Handle a config change from the adapter
1246  * @ioa_cfg:    ioa config struct
1247  * @hostrcb:    hostrcb
1248  *
1249  * Return value:
1250  *      none
1251  **/
1252 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1253                                      struct ipr_hostrcb *hostrcb)
1254 {
1255         struct ipr_resource_entry *res = NULL;
1256         struct ipr_config_table_entry_wrapper cfgtew;
1257         __be32 cc_res_handle;
1258
1259         u32 is_ndn = 1;
1260
1261         if (ioa_cfg->sis64) {
1262                 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1263                 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1264         } else {
1265                 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1266                 cc_res_handle = cfgtew.u.cfgte->res_handle;
1267         }
1268
1269         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1270                 if (res->res_handle == cc_res_handle) {
1271                         is_ndn = 0;
1272                         break;
1273                 }
1274         }
1275
1276         if (is_ndn) {
1277                 if (list_empty(&ioa_cfg->free_res_q)) {
1278                         ipr_send_hcam(ioa_cfg,
1279                                       IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1280                                       hostrcb);
1281                         return;
1282                 }
1283
1284                 res = list_entry(ioa_cfg->free_res_q.next,
1285                                  struct ipr_resource_entry, queue);
1286
1287                 list_del(&res->queue);
1288                 ipr_init_res_entry(res, &cfgtew);
1289                 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1290         }
1291
1292         ipr_update_res_entry(res, &cfgtew);
1293
1294         if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1295                 if (res->sdev) {
1296                         res->del_from_ml = 1;
1297                         res->res_handle = IPR_INVALID_RES_HANDLE;
1298                         if (ioa_cfg->allow_ml_add_del)
1299                                 schedule_work(&ioa_cfg->work_q);
1300                 } else {
1301                         ipr_clear_res_target(res);
1302                         list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1303                 }
1304         } else if (!res->sdev) {
1305                 res->add_to_ml = 1;
1306                 if (ioa_cfg->allow_ml_add_del)
1307                         schedule_work(&ioa_cfg->work_q);
1308         }
1309
1310         ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1311 }
1312
1313 /**
1314  * ipr_process_ccn - Op done function for a CCN.
1315  * @ipr_cmd:    ipr command struct
1316  *
1317  * This function is the op done function for a configuration
1318  * change notification host controlled async from the adapter.
1319  *
1320  * Return value:
1321  *      none
1322  **/
1323 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1324 {
1325         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1326         struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1327         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1328
1329         list_del(&hostrcb->queue);
1330         list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1331
1332         if (ioasc) {
1333                 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
1334                         dev_err(&ioa_cfg->pdev->dev,
1335                                 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1336
1337                 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1338         } else {
1339                 ipr_handle_config_change(ioa_cfg, hostrcb);
1340         }
1341 }
1342
1343 /**
1344  * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1345  * @i:          index into buffer
1346  * @buf:                string to modify
1347  *
1348  * This function will strip all trailing whitespace, pad the end
1349  * of the string with a single space, and NULL terminate the string.
1350  *
1351  * Return value:
1352  *      new length of string
1353  **/
1354 static int strip_and_pad_whitespace(int i, char *buf)
1355 {
1356         while (i && buf[i] == ' ')
1357                 i--;
1358         buf[i+1] = ' ';
1359         buf[i+2] = '\0';
1360         return i + 2;
1361 }
1362
1363 /**
1364  * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1365  * @prefix:             string to print at start of printk
1366  * @hostrcb:    hostrcb pointer
1367  * @vpd:                vendor/product id/sn struct
1368  *
1369  * Return value:
1370  *      none
1371  **/
1372 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1373                                 struct ipr_vpd *vpd)
1374 {
1375         char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1376         int i = 0;
1377
1378         memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1379         i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1380
1381         memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1382         i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1383
1384         memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1385         buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1386
1387         ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1388 }
1389
1390 /**
1391  * ipr_log_vpd - Log the passed VPD to the error log.
1392  * @vpd:                vendor/product id/sn struct
1393  *
1394  * Return value:
1395  *      none
1396  **/
1397 static void ipr_log_vpd(struct ipr_vpd *vpd)
1398 {
1399         char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1400                     + IPR_SERIAL_NUM_LEN];
1401
1402         memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1403         memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1404                IPR_PROD_ID_LEN);
1405         buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1406         ipr_err("Vendor/Product ID: %s\n", buffer);
1407
1408         memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1409         buffer[IPR_SERIAL_NUM_LEN] = '\0';
1410         ipr_err("    Serial Number: %s\n", buffer);
1411 }
1412
1413 /**
1414  * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1415  * @prefix:             string to print at start of printk
1416  * @hostrcb:    hostrcb pointer
1417  * @vpd:                vendor/product id/sn/wwn struct
1418  *
1419  * Return value:
1420  *      none
1421  **/
1422 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1423                                     struct ipr_ext_vpd *vpd)
1424 {
1425         ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1426         ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1427                      be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1428 }
1429
1430 /**
1431  * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1432  * @vpd:                vendor/product id/sn/wwn struct
1433  *
1434  * Return value:
1435  *      none
1436  **/
1437 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1438 {
1439         ipr_log_vpd(&vpd->vpd);
1440         ipr_err("    WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1441                 be32_to_cpu(vpd->wwid[1]));
1442 }
1443
1444 /**
1445  * ipr_log_enhanced_cache_error - Log a cache error.
1446  * @ioa_cfg:    ioa config struct
1447  * @hostrcb:    hostrcb struct
1448  *
1449  * Return value:
1450  *      none
1451  **/
1452 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1453                                          struct ipr_hostrcb *hostrcb)
1454 {
1455         struct ipr_hostrcb_type_12_error *error;
1456
1457         if (ioa_cfg->sis64)
1458                 error = &hostrcb->hcam.u.error64.u.type_12_error;
1459         else
1460                 error = &hostrcb->hcam.u.error.u.type_12_error;
1461
1462         ipr_err("-----Current Configuration-----\n");
1463         ipr_err("Cache Directory Card Information:\n");
1464         ipr_log_ext_vpd(&error->ioa_vpd);
1465         ipr_err("Adapter Card Information:\n");
1466         ipr_log_ext_vpd(&error->cfc_vpd);
1467
1468         ipr_err("-----Expected Configuration-----\n");
1469         ipr_err("Cache Directory Card Information:\n");
1470         ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1471         ipr_err("Adapter Card Information:\n");
1472         ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1473
1474         ipr_err("Additional IOA Data: %08X %08X %08X\n",
1475                      be32_to_cpu(error->ioa_data[0]),
1476                      be32_to_cpu(error->ioa_data[1]),
1477                      be32_to_cpu(error->ioa_data[2]));
1478 }
1479
1480 /**
1481  * ipr_log_cache_error - Log a cache error.
1482  * @ioa_cfg:    ioa config struct
1483  * @hostrcb:    hostrcb struct
1484  *
1485  * Return value:
1486  *      none
1487  **/
1488 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1489                                 struct ipr_hostrcb *hostrcb)
1490 {
1491         struct ipr_hostrcb_type_02_error *error =
1492                 &hostrcb->hcam.u.error.u.type_02_error;
1493
1494         ipr_err("-----Current Configuration-----\n");
1495         ipr_err("Cache Directory Card Information:\n");
1496         ipr_log_vpd(&error->ioa_vpd);
1497         ipr_err("Adapter Card Information:\n");
1498         ipr_log_vpd(&error->cfc_vpd);
1499
1500         ipr_err("-----Expected Configuration-----\n");
1501         ipr_err("Cache Directory Card Information:\n");
1502         ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1503         ipr_err("Adapter Card Information:\n");
1504         ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1505
1506         ipr_err("Additional IOA Data: %08X %08X %08X\n",
1507                      be32_to_cpu(error->ioa_data[0]),
1508                      be32_to_cpu(error->ioa_data[1]),
1509                      be32_to_cpu(error->ioa_data[2]));
1510 }
1511
1512 /**
1513  * ipr_log_enhanced_config_error - Log a configuration error.
1514  * @ioa_cfg:    ioa config struct
1515  * @hostrcb:    hostrcb struct
1516  *
1517  * Return value:
1518  *      none
1519  **/
1520 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1521                                           struct ipr_hostrcb *hostrcb)
1522 {
1523         int errors_logged, i;
1524         struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1525         struct ipr_hostrcb_type_13_error *error;
1526
1527         error = &hostrcb->hcam.u.error.u.type_13_error;
1528         errors_logged = be32_to_cpu(error->errors_logged);
1529
1530         ipr_err("Device Errors Detected/Logged: %d/%d\n",
1531                 be32_to_cpu(error->errors_detected), errors_logged);
1532
1533         dev_entry = error->dev;
1534
1535         for (i = 0; i < errors_logged; i++, dev_entry++) {
1536                 ipr_err_separator;
1537
1538                 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1539                 ipr_log_ext_vpd(&dev_entry->vpd);
1540
1541                 ipr_err("-----New Device Information-----\n");
1542                 ipr_log_ext_vpd(&dev_entry->new_vpd);
1543
1544                 ipr_err("Cache Directory Card Information:\n");
1545                 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1546
1547                 ipr_err("Adapter Card Information:\n");
1548                 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1549         }
1550 }
1551
1552 /**
1553  * ipr_log_sis64_config_error - Log a device error.
1554  * @ioa_cfg:    ioa config struct
1555  * @hostrcb:    hostrcb struct
1556  *
1557  * Return value:
1558  *      none
1559  **/
1560 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1561                                        struct ipr_hostrcb *hostrcb)
1562 {
1563         int errors_logged, i;
1564         struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1565         struct ipr_hostrcb_type_23_error *error;
1566         char buffer[IPR_MAX_RES_PATH_LENGTH];
1567
1568         error = &hostrcb->hcam.u.error64.u.type_23_error;
1569         errors_logged = be32_to_cpu(error->errors_logged);
1570
1571         ipr_err("Device Errors Detected/Logged: %d/%d\n",
1572                 be32_to_cpu(error->errors_detected), errors_logged);
1573
1574         dev_entry = error->dev;
1575
1576         for (i = 0; i < errors_logged; i++, dev_entry++) {
1577                 ipr_err_separator;
1578
1579                 ipr_err("Device %d : %s", i + 1,
1580                          ipr_format_res_path(dev_entry->res_path, buffer,
1581                                              sizeof(buffer)));
1582                 ipr_log_ext_vpd(&dev_entry->vpd);
1583
1584                 ipr_err("-----New Device Information-----\n");
1585                 ipr_log_ext_vpd(&dev_entry->new_vpd);
1586
1587                 ipr_err("Cache Directory Card Information:\n");
1588                 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1589
1590                 ipr_err("Adapter Card Information:\n");
1591                 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1592         }
1593 }
1594
1595 /**
1596  * ipr_log_config_error - Log a configuration error.
1597  * @ioa_cfg:    ioa config struct
1598  * @hostrcb:    hostrcb struct
1599  *
1600  * Return value:
1601  *      none
1602  **/
1603 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1604                                  struct ipr_hostrcb *hostrcb)
1605 {
1606         int errors_logged, i;
1607         struct ipr_hostrcb_device_data_entry *dev_entry;
1608         struct ipr_hostrcb_type_03_error *error;
1609
1610         error = &hostrcb->hcam.u.error.u.type_03_error;
1611         errors_logged = be32_to_cpu(error->errors_logged);
1612
1613         ipr_err("Device Errors Detected/Logged: %d/%d\n",
1614                 be32_to_cpu(error->errors_detected), errors_logged);
1615
1616         dev_entry = error->dev;
1617
1618         for (i = 0; i < errors_logged; i++, dev_entry++) {
1619                 ipr_err_separator;
1620
1621                 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1622                 ipr_log_vpd(&dev_entry->vpd);
1623
1624                 ipr_err("-----New Device Information-----\n");
1625                 ipr_log_vpd(&dev_entry->new_vpd);
1626
1627                 ipr_err("Cache Directory Card Information:\n");
1628                 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1629
1630                 ipr_err("Adapter Card Information:\n");
1631                 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1632
1633                 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1634                         be32_to_cpu(dev_entry->ioa_data[0]),
1635                         be32_to_cpu(dev_entry->ioa_data[1]),
1636                         be32_to_cpu(dev_entry->ioa_data[2]),
1637                         be32_to_cpu(dev_entry->ioa_data[3]),
1638                         be32_to_cpu(dev_entry->ioa_data[4]));
1639         }
1640 }
1641
1642 /**
1643  * ipr_log_enhanced_array_error - Log an array configuration error.
1644  * @ioa_cfg:    ioa config struct
1645  * @hostrcb:    hostrcb struct
1646  *
1647  * Return value:
1648  *      none
1649  **/
1650 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1651                                          struct ipr_hostrcb *hostrcb)
1652 {
1653         int i, num_entries;
1654         struct ipr_hostrcb_type_14_error *error;
1655         struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1656         const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1657
1658         error = &hostrcb->hcam.u.error.u.type_14_error;
1659
1660         ipr_err_separator;
1661
1662         ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1663                 error->protection_level,
1664                 ioa_cfg->host->host_no,
1665                 error->last_func_vset_res_addr.bus,
1666                 error->last_func_vset_res_addr.target,
1667                 error->last_func_vset_res_addr.lun);
1668
1669         ipr_err_separator;
1670
1671         array_entry = error->array_member;
1672         num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1673                             ARRAY_SIZE(error->array_member));
1674
1675         for (i = 0; i < num_entries; i++, array_entry++) {
1676                 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1677                         continue;
1678
1679                 if (be32_to_cpu(error->exposed_mode_adn) == i)
1680                         ipr_err("Exposed Array Member %d:\n", i);
1681                 else
1682                         ipr_err("Array Member %d:\n", i);
1683
1684                 ipr_log_ext_vpd(&array_entry->vpd);
1685                 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1686                 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1687                                  "Expected Location");
1688
1689                 ipr_err_separator;
1690         }
1691 }
1692
1693 /**
1694  * ipr_log_array_error - Log an array configuration error.
1695  * @ioa_cfg:    ioa config struct
1696  * @hostrcb:    hostrcb struct
1697  *
1698  * Return value:
1699  *      none
1700  **/
1701 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1702                                 struct ipr_hostrcb *hostrcb)
1703 {
1704         int i;
1705         struct ipr_hostrcb_type_04_error *error;
1706         struct ipr_hostrcb_array_data_entry *array_entry;
1707         const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1708
1709         error = &hostrcb->hcam.u.error.u.type_04_error;
1710
1711         ipr_err_separator;
1712
1713         ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1714                 error->protection_level,
1715                 ioa_cfg->host->host_no,
1716                 error->last_func_vset_res_addr.bus,
1717                 error->last_func_vset_res_addr.target,
1718                 error->last_func_vset_res_addr.lun);
1719
1720         ipr_err_separator;
1721
1722         array_entry = error->array_member;
1723
1724         for (i = 0; i < 18; i++) {
1725                 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1726                         continue;
1727
1728                 if (be32_to_cpu(error->exposed_mode_adn) == i)
1729                         ipr_err("Exposed Array Member %d:\n", i);
1730                 else
1731                         ipr_err("Array Member %d:\n", i);
1732
1733                 ipr_log_vpd(&array_entry->vpd);
1734
1735                 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1736                 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1737                                  "Expected Location");
1738
1739                 ipr_err_separator;
1740
1741                 if (i == 9)
1742                         array_entry = error->array_member2;
1743                 else
1744                         array_entry++;
1745         }
1746 }
1747
1748 /**
1749  * ipr_log_hex_data - Log additional hex IOA error data.
1750  * @ioa_cfg:    ioa config struct
1751  * @data:               IOA error data
1752  * @len:                data length
1753  *
1754  * Return value:
1755  *      none
1756  **/
1757 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1758 {
1759         int i;
1760
1761         if (len == 0)
1762                 return;
1763
1764         if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1765                 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1766
1767         for (i = 0; i < len / 4; i += 4) {
1768                 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1769                         be32_to_cpu(data[i]),
1770                         be32_to_cpu(data[i+1]),
1771                         be32_to_cpu(data[i+2]),
1772                         be32_to_cpu(data[i+3]));
1773         }
1774 }
1775
1776 /**
1777  * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1778  * @ioa_cfg:    ioa config struct
1779  * @hostrcb:    hostrcb struct
1780  *
1781  * Return value:
1782  *      none
1783  **/
1784 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1785                                             struct ipr_hostrcb *hostrcb)
1786 {
1787         struct ipr_hostrcb_type_17_error *error;
1788
1789         if (ioa_cfg->sis64)
1790                 error = &hostrcb->hcam.u.error64.u.type_17_error;
1791         else
1792                 error = &hostrcb->hcam.u.error.u.type_17_error;
1793
1794         error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1795         strim(error->failure_reason);
1796
1797         ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1798                      be32_to_cpu(hostrcb->hcam.u.error.prc));
1799         ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1800         ipr_log_hex_data(ioa_cfg, error->data,
1801                          be32_to_cpu(hostrcb->hcam.length) -
1802                          (offsetof(struct ipr_hostrcb_error, u) +
1803                           offsetof(struct ipr_hostrcb_type_17_error, data)));
1804 }
1805
1806 /**
1807  * ipr_log_dual_ioa_error - Log a dual adapter error.
1808  * @ioa_cfg:    ioa config struct
1809  * @hostrcb:    hostrcb struct
1810  *
1811  * Return value:
1812  *      none
1813  **/
1814 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1815                                    struct ipr_hostrcb *hostrcb)
1816 {
1817         struct ipr_hostrcb_type_07_error *error;
1818
1819         error = &hostrcb->hcam.u.error.u.type_07_error;
1820         error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1821         strim(error->failure_reason);
1822
1823         ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1824                      be32_to_cpu(hostrcb->hcam.u.error.prc));
1825         ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1826         ipr_log_hex_data(ioa_cfg, error->data,
1827                          be32_to_cpu(hostrcb->hcam.length) -
1828                          (offsetof(struct ipr_hostrcb_error, u) +
1829                           offsetof(struct ipr_hostrcb_type_07_error, data)));
1830 }
1831
1832 static const struct {
1833         u8 active;
1834         char *desc;
1835 } path_active_desc[] = {
1836         { IPR_PATH_NO_INFO, "Path" },
1837         { IPR_PATH_ACTIVE, "Active path" },
1838         { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1839 };
1840
1841 static const struct {
1842         u8 state;
1843         char *desc;
1844 } path_state_desc[] = {
1845         { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1846         { IPR_PATH_HEALTHY, "is healthy" },
1847         { IPR_PATH_DEGRADED, "is degraded" },
1848         { IPR_PATH_FAILED, "is failed" }
1849 };
1850
1851 /**
1852  * ipr_log_fabric_path - Log a fabric path error
1853  * @hostrcb:    hostrcb struct
1854  * @fabric:             fabric descriptor
1855  *
1856  * Return value:
1857  *      none
1858  **/
1859 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1860                                 struct ipr_hostrcb_fabric_desc *fabric)
1861 {
1862         int i, j;
1863         u8 path_state = fabric->path_state;
1864         u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1865         u8 state = path_state & IPR_PATH_STATE_MASK;
1866
1867         for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1868                 if (path_active_desc[i].active != active)
1869                         continue;
1870
1871                 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1872                         if (path_state_desc[j].state != state)
1873                                 continue;
1874
1875                         if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1876                                 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1877                                              path_active_desc[i].desc, path_state_desc[j].desc,
1878                                              fabric->ioa_port);
1879                         } else if (fabric->cascaded_expander == 0xff) {
1880                                 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1881                                              path_active_desc[i].desc, path_state_desc[j].desc,
1882                                              fabric->ioa_port, fabric->phy);
1883                         } else if (fabric->phy == 0xff) {
1884                                 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1885                                              path_active_desc[i].desc, path_state_desc[j].desc,
1886                                              fabric->ioa_port, fabric->cascaded_expander);
1887                         } else {
1888                                 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1889                                              path_active_desc[i].desc, path_state_desc[j].desc,
1890                                              fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1891                         }
1892                         return;
1893                 }
1894         }
1895
1896         ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1897                 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1898 }
1899
1900 /**
1901  * ipr_log64_fabric_path - Log a fabric path error
1902  * @hostrcb:    hostrcb struct
1903  * @fabric:             fabric descriptor
1904  *
1905  * Return value:
1906  *      none
1907  **/
1908 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
1909                                   struct ipr_hostrcb64_fabric_desc *fabric)
1910 {
1911         int i, j;
1912         u8 path_state = fabric->path_state;
1913         u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1914         u8 state = path_state & IPR_PATH_STATE_MASK;
1915         char buffer[IPR_MAX_RES_PATH_LENGTH];
1916
1917         for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1918                 if (path_active_desc[i].active != active)
1919                         continue;
1920
1921                 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1922                         if (path_state_desc[j].state != state)
1923                                 continue;
1924
1925                         ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
1926                                      path_active_desc[i].desc, path_state_desc[j].desc,
1927                                      ipr_format_res_path(fabric->res_path, buffer,
1928                                                          sizeof(buffer)));
1929                         return;
1930                 }
1931         }
1932
1933         ipr_err("Path state=%02X Resource Path=%s\n", path_state,
1934                 ipr_format_res_path(fabric->res_path, buffer, sizeof(buffer)));
1935 }
1936
1937 static const struct {
1938         u8 type;
1939         char *desc;
1940 } path_type_desc[] = {
1941         { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1942         { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1943         { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1944         { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1945 };
1946
1947 static const struct {
1948         u8 status;
1949         char *desc;
1950 } path_status_desc[] = {
1951         { IPR_PATH_CFG_NO_PROB, "Functional" },
1952         { IPR_PATH_CFG_DEGRADED, "Degraded" },
1953         { IPR_PATH_CFG_FAILED, "Failed" },
1954         { IPR_PATH_CFG_SUSPECT, "Suspect" },
1955         { IPR_PATH_NOT_DETECTED, "Missing" },
1956         { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1957 };
1958
1959 static const char *link_rate[] = {
1960         "unknown",
1961         "disabled",
1962         "phy reset problem",
1963         "spinup hold",
1964         "port selector",
1965         "unknown",
1966         "unknown",
1967         "unknown",
1968         "1.5Gbps",
1969         "3.0Gbps",
1970         "unknown",
1971         "unknown",
1972         "unknown",
1973         "unknown",
1974         "unknown",
1975         "unknown"
1976 };
1977
1978 /**
1979  * ipr_log_path_elem - Log a fabric path element.
1980  * @hostrcb:    hostrcb struct
1981  * @cfg:                fabric path element struct
1982  *
1983  * Return value:
1984  *      none
1985  **/
1986 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1987                               struct ipr_hostrcb_config_element *cfg)
1988 {
1989         int i, j;
1990         u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1991         u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1992
1993         if (type == IPR_PATH_CFG_NOT_EXIST)
1994                 return;
1995
1996         for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1997                 if (path_type_desc[i].type != type)
1998                         continue;
1999
2000                 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2001                         if (path_status_desc[j].status != status)
2002                                 continue;
2003
2004                         if (type == IPR_PATH_CFG_IOA_PORT) {
2005                                 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2006                                              path_status_desc[j].desc, path_type_desc[i].desc,
2007                                              cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2008                                              be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2009                         } else {
2010                                 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2011                                         ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2012                                                      path_status_desc[j].desc, path_type_desc[i].desc,
2013                                                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2014                                                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2015                                 } else if (cfg->cascaded_expander == 0xff) {
2016                                         ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2017                                                      "WWN=%08X%08X\n", path_status_desc[j].desc,
2018                                                      path_type_desc[i].desc, cfg->phy,
2019                                                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2020                                                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2021                                 } else if (cfg->phy == 0xff) {
2022                                         ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2023                                                      "WWN=%08X%08X\n", path_status_desc[j].desc,
2024                                                      path_type_desc[i].desc, cfg->cascaded_expander,
2025                                                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2026                                                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2027                                 } else {
2028                                         ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2029                                                      "WWN=%08X%08X\n", path_status_desc[j].desc,
2030                                                      path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2031                                                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2032                                                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2033                                 }
2034                         }
2035                         return;
2036                 }
2037         }
2038
2039         ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2040                      "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2041                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2042                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2043 }
2044
2045 /**
2046  * ipr_log64_path_elem - Log a fabric path element.
2047  * @hostrcb:    hostrcb struct
2048  * @cfg:                fabric path element struct
2049  *
2050  * Return value:
2051  *      none
2052  **/
2053 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2054                                 struct ipr_hostrcb64_config_element *cfg)
2055 {
2056         int i, j;
2057         u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2058         u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2059         u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2060         char buffer[IPR_MAX_RES_PATH_LENGTH];
2061
2062         if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2063                 return;
2064
2065         for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2066                 if (path_type_desc[i].type != type)
2067                         continue;
2068
2069                 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2070                         if (path_status_desc[j].status != status)
2071                                 continue;
2072
2073                         ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2074                                      path_status_desc[j].desc, path_type_desc[i].desc,
2075                                      ipr_format_res_path(cfg->res_path, buffer,
2076                                                          sizeof(buffer)),
2077                                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2078                                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2079                         return;
2080                 }
2081         }
2082         ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2083                      "WWN=%08X%08X\n", cfg->type_status,
2084                      ipr_format_res_path(cfg->res_path, buffer, sizeof(buffer)),
2085                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2086                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2087 }
2088
2089 /**
2090  * ipr_log_fabric_error - Log a fabric error.
2091  * @ioa_cfg:    ioa config struct
2092  * @hostrcb:    hostrcb struct
2093  *
2094  * Return value:
2095  *      none
2096  **/
2097 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2098                                  struct ipr_hostrcb *hostrcb)
2099 {
2100         struct ipr_hostrcb_type_20_error *error;
2101         struct ipr_hostrcb_fabric_desc *fabric;
2102         struct ipr_hostrcb_config_element *cfg;
2103         int i, add_len;
2104
2105         error = &hostrcb->hcam.u.error.u.type_20_error;
2106         error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2107         ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2108
2109         add_len = be32_to_cpu(hostrcb->hcam.length) -
2110                 (offsetof(struct ipr_hostrcb_error, u) +
2111                  offsetof(struct ipr_hostrcb_type_20_error, desc));
2112
2113         for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2114                 ipr_log_fabric_path(hostrcb, fabric);
2115                 for_each_fabric_cfg(fabric, cfg)
2116                         ipr_log_path_elem(hostrcb, cfg);
2117
2118                 add_len -= be16_to_cpu(fabric->length);
2119                 fabric = (struct ipr_hostrcb_fabric_desc *)
2120                         ((unsigned long)fabric + be16_to_cpu(fabric->length));
2121         }
2122
2123         ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2124 }
2125
2126 /**
2127  * ipr_log_sis64_array_error - Log a sis64 array error.
2128  * @ioa_cfg:    ioa config struct
2129  * @hostrcb:    hostrcb struct
2130  *
2131  * Return value:
2132  *      none
2133  **/
2134 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2135                                       struct ipr_hostrcb *hostrcb)
2136 {
2137         int i, num_entries;
2138         struct ipr_hostrcb_type_24_error *error;
2139         struct ipr_hostrcb64_array_data_entry *array_entry;
2140         char buffer[IPR_MAX_RES_PATH_LENGTH];
2141         const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2142
2143         error = &hostrcb->hcam.u.error64.u.type_24_error;
2144
2145         ipr_err_separator;
2146
2147         ipr_err("RAID %s Array Configuration: %s\n",
2148                 error->protection_level,
2149                 ipr_format_res_path(error->last_res_path, buffer, sizeof(buffer)));
2150
2151         ipr_err_separator;
2152
2153         array_entry = error->array_member;
2154         num_entries = min_t(u32, error->num_entries,
2155                             ARRAY_SIZE(error->array_member));
2156
2157         for (i = 0; i < num_entries; i++, array_entry++) {
2158
2159                 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2160                         continue;
2161
2162                 if (error->exposed_mode_adn == i)
2163                         ipr_err("Exposed Array Member %d:\n", i);
2164                 else
2165                         ipr_err("Array Member %d:\n", i);
2166
2167                 ipr_err("Array Member %d:\n", i);
2168                 ipr_log_ext_vpd(&array_entry->vpd);
2169                 ipr_err("Current Location: %s\n",
2170                          ipr_format_res_path(array_entry->res_path, buffer,
2171                                              sizeof(buffer)));
2172                 ipr_err("Expected Location: %s\n",
2173                          ipr_format_res_path(array_entry->expected_res_path,
2174                                              buffer, sizeof(buffer)));
2175
2176                 ipr_err_separator;
2177         }
2178 }
2179
2180 /**
2181  * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2182  * @ioa_cfg:    ioa config struct
2183  * @hostrcb:    hostrcb struct
2184  *
2185  * Return value:
2186  *      none
2187  **/
2188 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2189                                        struct ipr_hostrcb *hostrcb)
2190 {
2191         struct ipr_hostrcb_type_30_error *error;
2192         struct ipr_hostrcb64_fabric_desc *fabric;
2193         struct ipr_hostrcb64_config_element *cfg;
2194         int i, add_len;
2195
2196         error = &hostrcb->hcam.u.error64.u.type_30_error;
2197
2198         error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2199         ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2200
2201         add_len = be32_to_cpu(hostrcb->hcam.length) -
2202                 (offsetof(struct ipr_hostrcb64_error, u) +
2203                  offsetof(struct ipr_hostrcb_type_30_error, desc));
2204
2205         for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2206                 ipr_log64_fabric_path(hostrcb, fabric);
2207                 for_each_fabric_cfg(fabric, cfg)
2208                         ipr_log64_path_elem(hostrcb, cfg);
2209
2210                 add_len -= be16_to_cpu(fabric->length);
2211                 fabric = (struct ipr_hostrcb64_fabric_desc *)
2212                         ((unsigned long)fabric + be16_to_cpu(fabric->length));
2213         }
2214
2215         ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2216 }
2217
2218 /**
2219  * ipr_log_generic_error - Log an adapter error.
2220  * @ioa_cfg:    ioa config struct
2221  * @hostrcb:    hostrcb struct
2222  *
2223  * Return value:
2224  *      none
2225  **/
2226 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2227                                   struct ipr_hostrcb *hostrcb)
2228 {
2229         ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2230                          be32_to_cpu(hostrcb->hcam.length));
2231 }
2232
2233 /**
2234  * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2235  * @ioasc:      IOASC
2236  *
2237  * This function will return the index of into the ipr_error_table
2238  * for the specified IOASC. If the IOASC is not in the table,
2239  * 0 will be returned, which points to the entry used for unknown errors.
2240  *
2241  * Return value:
2242  *      index into the ipr_error_table
2243  **/
2244 static u32 ipr_get_error(u32 ioasc)
2245 {
2246         int i;
2247
2248         for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2249                 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2250                         return i;
2251
2252         return 0;
2253 }
2254
2255 /**
2256  * ipr_handle_log_data - Log an adapter error.
2257  * @ioa_cfg:    ioa config struct
2258  * @hostrcb:    hostrcb struct
2259  *
2260  * This function logs an adapter error to the system.
2261  *
2262  * Return value:
2263  *      none
2264  **/
2265 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2266                                 struct ipr_hostrcb *hostrcb)
2267 {
2268         u32 ioasc;
2269         int error_index;
2270
2271         if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2272                 return;
2273
2274         if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2275                 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2276
2277         if (ioa_cfg->sis64)
2278                 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2279         else
2280                 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2281
2282         if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2283             ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2284                 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2285                 scsi_report_bus_reset(ioa_cfg->host,
2286                                       hostrcb->hcam.u.error.fd_res_addr.bus);
2287         }
2288
2289         error_index = ipr_get_error(ioasc);
2290
2291         if (!ipr_error_table[error_index].log_hcam)
2292                 return;
2293
2294         ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2295
2296         /* Set indication we have logged an error */
2297         ioa_cfg->errors_logged++;
2298
2299         if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2300                 return;
2301         if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2302                 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2303
2304         switch (hostrcb->hcam.overlay_id) {
2305         case IPR_HOST_RCB_OVERLAY_ID_2:
2306                 ipr_log_cache_error(ioa_cfg, hostrcb);
2307                 break;
2308         case IPR_HOST_RCB_OVERLAY_ID_3:
2309                 ipr_log_config_error(ioa_cfg, hostrcb);
2310                 break;
2311         case IPR_HOST_RCB_OVERLAY_ID_4:
2312         case IPR_HOST_RCB_OVERLAY_ID_6:
2313                 ipr_log_array_error(ioa_cfg, hostrcb);
2314                 break;
2315         case IPR_HOST_RCB_OVERLAY_ID_7:
2316                 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2317                 break;
2318         case IPR_HOST_RCB_OVERLAY_ID_12:
2319                 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2320                 break;
2321         case IPR_HOST_RCB_OVERLAY_ID_13:
2322                 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2323                 break;
2324         case IPR_HOST_RCB_OVERLAY_ID_14:
2325         case IPR_HOST_RCB_OVERLAY_ID_16:
2326                 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2327                 break;
2328         case IPR_HOST_RCB_OVERLAY_ID_17:
2329                 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2330                 break;
2331         case IPR_HOST_RCB_OVERLAY_ID_20:
2332                 ipr_log_fabric_error(ioa_cfg, hostrcb);
2333                 break;
2334         case IPR_HOST_RCB_OVERLAY_ID_23:
2335                 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2336                 break;
2337         case IPR_HOST_RCB_OVERLAY_ID_24:
2338         case IPR_HOST_RCB_OVERLAY_ID_26:
2339                 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2340                 break;
2341         case IPR_HOST_RCB_OVERLAY_ID_30:
2342                 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2343                 break;
2344         case IPR_HOST_RCB_OVERLAY_ID_1:
2345         case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2346         default:
2347                 ipr_log_generic_error(ioa_cfg, hostrcb);
2348                 break;
2349         }
2350 }
2351
2352 /**
2353  * ipr_process_error - Op done function for an adapter error log.
2354  * @ipr_cmd:    ipr command struct
2355  *
2356  * This function is the op done function for an error log host
2357  * controlled async from the adapter. It will log the error and
2358  * send the HCAM back to the adapter.
2359  *
2360  * Return value:
2361  *      none
2362  **/
2363 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2364 {
2365         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2366         struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2367         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2368         u32 fd_ioasc;
2369
2370         if (ioa_cfg->sis64)
2371                 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2372         else
2373                 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2374
2375         list_del(&hostrcb->queue);
2376         list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2377
2378         if (!ioasc) {
2379                 ipr_handle_log_data(ioa_cfg, hostrcb);
2380                 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2381                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2382         } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
2383                 dev_err(&ioa_cfg->pdev->dev,
2384                         "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2385         }
2386
2387         ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2388 }
2389
2390 /**
2391  * ipr_timeout -  An internally generated op has timed out.
2392  * @ipr_cmd:    ipr command struct
2393  *
2394  * This function blocks host requests and initiates an
2395  * adapter reset.
2396  *
2397  * Return value:
2398  *      none
2399  **/
2400 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
2401 {
2402         unsigned long lock_flags = 0;
2403         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2404
2405         ENTER;
2406         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2407
2408         ioa_cfg->errors_logged++;
2409         dev_err(&ioa_cfg->pdev->dev,
2410                 "Adapter being reset due to command timeout.\n");
2411
2412         if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2413                 ioa_cfg->sdt_state = GET_DUMP;
2414
2415         if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2416                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2417
2418         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2419         LEAVE;
2420 }
2421
2422 /**
2423  * ipr_oper_timeout -  Adapter timed out transitioning to operational
2424  * @ipr_cmd:    ipr command struct
2425  *
2426  * This function blocks host requests and initiates an
2427  * adapter reset.
2428  *
2429  * Return value:
2430  *      none
2431  **/
2432 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2433 {
2434         unsigned long lock_flags = 0;
2435         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2436
2437         ENTER;
2438         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2439
2440         ioa_cfg->errors_logged++;
2441         dev_err(&ioa_cfg->pdev->dev,
2442                 "Adapter timed out transitioning to operational.\n");
2443
2444         if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2445                 ioa_cfg->sdt_state = GET_DUMP;
2446
2447         if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2448                 if (ipr_fastfail)
2449                         ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2450                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2451         }
2452
2453         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2454         LEAVE;
2455 }
2456
2457 /**
2458  * ipr_reset_reload - Reset/Reload the IOA
2459  * @ioa_cfg:            ioa config struct
2460  * @shutdown_type:      shutdown type
2461  *
2462  * This function resets the adapter and re-initializes it.
2463  * This function assumes that all new host commands have been stopped.
2464  * Return value:
2465  *      SUCCESS / FAILED
2466  **/
2467 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
2468                             enum ipr_shutdown_type shutdown_type)
2469 {
2470         if (!ioa_cfg->in_reset_reload)
2471                 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
2472
2473         spin_unlock_irq(ioa_cfg->host->host_lock);
2474         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2475         spin_lock_irq(ioa_cfg->host->host_lock);
2476
2477         /* If we got hit with a host reset while we were already resetting
2478          the adapter for some reason, and the reset failed. */
2479         if (ioa_cfg->ioa_is_dead) {
2480                 ipr_trace;
2481                 return FAILED;
2482         }
2483
2484         return SUCCESS;
2485 }
2486
2487 /**
2488  * ipr_find_ses_entry - Find matching SES in SES table
2489  * @res:        resource entry struct of SES
2490  *
2491  * Return value:
2492  *      pointer to SES table entry / NULL on failure
2493  **/
2494 static const struct ipr_ses_table_entry *
2495 ipr_find_ses_entry(struct ipr_resource_entry *res)
2496 {
2497         int i, j, matches;
2498         struct ipr_std_inq_vpids *vpids;
2499         const struct ipr_ses_table_entry *ste = ipr_ses_table;
2500
2501         for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2502                 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2503                         if (ste->compare_product_id_byte[j] == 'X') {
2504                                 vpids = &res->std_inq_data.vpids;
2505                                 if (vpids->product_id[j] == ste->product_id[j])
2506                                         matches++;
2507                                 else
2508                                         break;
2509                         } else
2510                                 matches++;
2511                 }
2512
2513                 if (matches == IPR_PROD_ID_LEN)
2514                         return ste;
2515         }
2516
2517         return NULL;
2518 }
2519
2520 /**
2521  * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2522  * @ioa_cfg:    ioa config struct
2523  * @bus:                SCSI bus
2524  * @bus_width:  bus width
2525  *
2526  * Return value:
2527  *      SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2528  *      For a 2-byte wide SCSI bus, the maximum transfer speed is
2529  *      twice the maximum transfer rate (e.g. for a wide enabled bus,
2530  *      max 160MHz = max 320MB/sec).
2531  **/
2532 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2533 {
2534         struct ipr_resource_entry *res;
2535         const struct ipr_ses_table_entry *ste;
2536         u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2537
2538         /* Loop through each config table entry in the config table buffer */
2539         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2540                 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2541                         continue;
2542
2543                 if (bus != res->bus)
2544                         continue;
2545
2546                 if (!(ste = ipr_find_ses_entry(res)))
2547                         continue;
2548
2549                 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2550         }
2551
2552         return max_xfer_rate;
2553 }
2554
2555 /**
2556  * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2557  * @ioa_cfg:            ioa config struct
2558  * @max_delay:          max delay in micro-seconds to wait
2559  *
2560  * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2561  *
2562  * Return value:
2563  *      0 on success / other on failure
2564  **/
2565 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2566 {
2567         volatile u32 pcii_reg;
2568         int delay = 1;
2569
2570         /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2571         while (delay < max_delay) {
2572                 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2573
2574                 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2575                         return 0;
2576
2577                 /* udelay cannot be used if delay is more than a few milliseconds */
2578                 if ((delay / 1000) > MAX_UDELAY_MS)
2579                         mdelay(delay / 1000);
2580                 else
2581                         udelay(delay);
2582
2583                 delay += delay;
2584         }
2585         return -EIO;
2586 }
2587
2588 /**
2589  * ipr_get_sis64_dump_data_section - Dump IOA memory
2590  * @ioa_cfg:                    ioa config struct
2591  * @start_addr:                 adapter address to dump
2592  * @dest:                       destination kernel buffer
2593  * @length_in_words:            length to dump in 4 byte words
2594  *
2595  * Return value:
2596  *      0 on success
2597  **/
2598 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2599                                            u32 start_addr,
2600                                            __be32 *dest, u32 length_in_words)
2601 {
2602         int i;
2603
2604         for (i = 0; i < length_in_words; i++) {
2605                 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2606                 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2607                 dest++;
2608         }
2609
2610         return 0;
2611 }
2612
2613 /**
2614  * ipr_get_ldump_data_section - Dump IOA memory
2615  * @ioa_cfg:                    ioa config struct
2616  * @start_addr:                 adapter address to dump
2617  * @dest:                               destination kernel buffer
2618  * @length_in_words:    length to dump in 4 byte words
2619  *
2620  * Return value:
2621  *      0 on success / -EIO on failure
2622  **/
2623 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2624                                       u32 start_addr,
2625                                       __be32 *dest, u32 length_in_words)
2626 {
2627         volatile u32 temp_pcii_reg;
2628         int i, delay = 0;
2629
2630         if (ioa_cfg->sis64)
2631                 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2632                                                        dest, length_in_words);
2633
2634         /* Write IOA interrupt reg starting LDUMP state  */
2635         writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2636                ioa_cfg->regs.set_uproc_interrupt_reg32);
2637
2638         /* Wait for IO debug acknowledge */
2639         if (ipr_wait_iodbg_ack(ioa_cfg,
2640                                IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2641                 dev_err(&ioa_cfg->pdev->dev,
2642                         "IOA dump long data transfer timeout\n");
2643                 return -EIO;
2644         }
2645
2646         /* Signal LDUMP interlocked - clear IO debug ack */
2647         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2648                ioa_cfg->regs.clr_interrupt_reg);
2649
2650         /* Write Mailbox with starting address */
2651         writel(start_addr, ioa_cfg->ioa_mailbox);
2652
2653         /* Signal address valid - clear IOA Reset alert */
2654         writel(IPR_UPROCI_RESET_ALERT,
2655                ioa_cfg->regs.clr_uproc_interrupt_reg32);
2656
2657         for (i = 0; i < length_in_words; i++) {
2658                 /* Wait for IO debug acknowledge */
2659                 if (ipr_wait_iodbg_ack(ioa_cfg,
2660                                        IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2661                         dev_err(&ioa_cfg->pdev->dev,
2662                                 "IOA dump short data transfer timeout\n");
2663                         return -EIO;
2664                 }
2665
2666                 /* Read data from mailbox and increment destination pointer */
2667                 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2668                 dest++;
2669
2670                 /* For all but the last word of data, signal data received */
2671                 if (i < (length_in_words - 1)) {
2672                         /* Signal dump data received - Clear IO debug Ack */
2673                         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2674                                ioa_cfg->regs.clr_interrupt_reg);
2675                 }
2676         }
2677
2678         /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2679         writel(IPR_UPROCI_RESET_ALERT,
2680                ioa_cfg->regs.set_uproc_interrupt_reg32);
2681
2682         writel(IPR_UPROCI_IO_DEBUG_ALERT,
2683                ioa_cfg->regs.clr_uproc_interrupt_reg32);
2684
2685         /* Signal dump data received - Clear IO debug Ack */
2686         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2687                ioa_cfg->regs.clr_interrupt_reg);
2688
2689         /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2690         while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2691                 temp_pcii_reg =
2692                     readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2693
2694                 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2695                         return 0;
2696
2697                 udelay(10);
2698                 delay += 10;
2699         }
2700
2701         return 0;
2702 }
2703
2704 #ifdef CONFIG_SCSI_IPR_DUMP
2705 /**
2706  * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2707  * @ioa_cfg:            ioa config struct
2708  * @pci_address:        adapter address
2709  * @length:                     length of data to copy
2710  *
2711  * Copy data from PCI adapter to kernel buffer.
2712  * Note: length MUST be a 4 byte multiple
2713  * Return value:
2714  *      0 on success / other on failure
2715  **/
2716 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2717                         unsigned long pci_address, u32 length)
2718 {
2719         int bytes_copied = 0;
2720         int cur_len, rc, rem_len, rem_page_len;
2721         __be32 *page;
2722         unsigned long lock_flags = 0;
2723         struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2724
2725         while (bytes_copied < length &&
2726                (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
2727                 if (ioa_dump->page_offset >= PAGE_SIZE ||
2728                     ioa_dump->page_offset == 0) {
2729                         page = (__be32 *)__get_free_page(GFP_ATOMIC);
2730
2731                         if (!page) {
2732                                 ipr_trace;
2733                                 return bytes_copied;
2734                         }
2735
2736                         ioa_dump->page_offset = 0;
2737                         ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2738                         ioa_dump->next_page_index++;
2739                 } else
2740                         page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2741
2742                 rem_len = length - bytes_copied;
2743                 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2744                 cur_len = min(rem_len, rem_page_len);
2745
2746                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2747                 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2748                         rc = -EIO;
2749                 } else {
2750                         rc = ipr_get_ldump_data_section(ioa_cfg,
2751                                                         pci_address + bytes_copied,
2752                                                         &page[ioa_dump->page_offset / 4],
2753                                                         (cur_len / sizeof(u32)));
2754                 }
2755                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2756
2757                 if (!rc) {
2758                         ioa_dump->page_offset += cur_len;
2759                         bytes_copied += cur_len;
2760                 } else {
2761                         ipr_trace;
2762                         break;
2763                 }
2764                 schedule();
2765         }
2766
2767         return bytes_copied;
2768 }
2769
2770 /**
2771  * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2772  * @hdr:        dump entry header struct
2773  *
2774  * Return value:
2775  *      nothing
2776  **/
2777 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2778 {
2779         hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2780         hdr->num_elems = 1;
2781         hdr->offset = sizeof(*hdr);
2782         hdr->status = IPR_DUMP_STATUS_SUCCESS;
2783 }
2784
2785 /**
2786  * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2787  * @ioa_cfg:    ioa config struct
2788  * @driver_dump:        driver dump struct
2789  *
2790  * Return value:
2791  *      nothing
2792  **/
2793 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2794                                    struct ipr_driver_dump *driver_dump)
2795 {
2796         struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2797
2798         ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2799         driver_dump->ioa_type_entry.hdr.len =
2800                 sizeof(struct ipr_dump_ioa_type_entry) -
2801                 sizeof(struct ipr_dump_entry_header);
2802         driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2803         driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2804         driver_dump->ioa_type_entry.type = ioa_cfg->type;
2805         driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2806                 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2807                 ucode_vpd->minor_release[1];
2808         driver_dump->hdr.num_entries++;
2809 }
2810
2811 /**
2812  * ipr_dump_version_data - Fill in the driver version in the dump.
2813  * @ioa_cfg:    ioa config struct
2814  * @driver_dump:        driver dump struct
2815  *
2816  * Return value:
2817  *      nothing
2818  **/
2819 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2820                                   struct ipr_driver_dump *driver_dump)
2821 {
2822         ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2823         driver_dump->version_entry.hdr.len =
2824                 sizeof(struct ipr_dump_version_entry) -
2825                 sizeof(struct ipr_dump_entry_header);
2826         driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2827         driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2828         strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2829         driver_dump->hdr.num_entries++;
2830 }
2831
2832 /**
2833  * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2834  * @ioa_cfg:    ioa config struct
2835  * @driver_dump:        driver dump struct
2836  *
2837  * Return value:
2838  *      nothing
2839  **/
2840 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2841                                    struct ipr_driver_dump *driver_dump)
2842 {
2843         ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2844         driver_dump->trace_entry.hdr.len =
2845                 sizeof(struct ipr_dump_trace_entry) -
2846                 sizeof(struct ipr_dump_entry_header);
2847         driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2848         driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2849         memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2850         driver_dump->hdr.num_entries++;
2851 }
2852
2853 /**
2854  * ipr_dump_location_data - Fill in the IOA location in the dump.
2855  * @ioa_cfg:    ioa config struct
2856  * @driver_dump:        driver dump struct
2857  *
2858  * Return value:
2859  *      nothing
2860  **/
2861 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2862                                    struct ipr_driver_dump *driver_dump)
2863 {
2864         ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2865         driver_dump->location_entry.hdr.len =
2866                 sizeof(struct ipr_dump_location_entry) -
2867                 sizeof(struct ipr_dump_entry_header);
2868         driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2869         driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2870         strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
2871         driver_dump->hdr.num_entries++;
2872 }
2873
2874 /**
2875  * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2876  * @ioa_cfg:    ioa config struct
2877  * @dump:               dump struct
2878  *
2879  * Return value:
2880  *      nothing
2881  **/
2882 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2883 {
2884         unsigned long start_addr, sdt_word;
2885         unsigned long lock_flags = 0;
2886         struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2887         struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2888         u32 num_entries, start_off, end_off;
2889         u32 bytes_to_copy, bytes_copied, rc;
2890         struct ipr_sdt *sdt;
2891         int valid = 1;
2892         int i;
2893
2894         ENTER;
2895
2896         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2897
2898         if (ioa_cfg->sdt_state != GET_DUMP) {
2899                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2900                 return;
2901         }
2902
2903         if (ioa_cfg->sis64) {
2904                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2905                 ssleep(IPR_DUMP_DELAY_SECONDS);
2906                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2907         }
2908
2909         start_addr = readl(ioa_cfg->ioa_mailbox);
2910
2911         if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
2912                 dev_err(&ioa_cfg->pdev->dev,
2913                         "Invalid dump table format: %lx\n", start_addr);
2914                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2915                 return;
2916         }
2917
2918         dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2919
2920         driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2921
2922         /* Initialize the overall dump header */
2923         driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2924         driver_dump->hdr.num_entries = 1;
2925         driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2926         driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2927         driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2928         driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2929
2930         ipr_dump_version_data(ioa_cfg, driver_dump);
2931         ipr_dump_location_data(ioa_cfg, driver_dump);
2932         ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2933         ipr_dump_trace_data(ioa_cfg, driver_dump);
2934
2935         /* Update dump_header */
2936         driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2937
2938         /* IOA Dump entry */
2939         ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2940         ioa_dump->hdr.len = 0;
2941         ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2942         ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2943
2944         /* First entries in sdt are actually a list of dump addresses and
2945          lengths to gather the real dump data.  sdt represents the pointer
2946          to the ioa generated dump table.  Dump data will be extracted based
2947          on entries in this table */
2948         sdt = &ioa_dump->sdt;
2949
2950         rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2951                                         sizeof(struct ipr_sdt) / sizeof(__be32));
2952
2953         /* Smart Dump table is ready to use and the first entry is valid */
2954         if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
2955             (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
2956                 dev_err(&ioa_cfg->pdev->dev,
2957                         "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2958                         rc, be32_to_cpu(sdt->hdr.state));
2959                 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2960                 ioa_cfg->sdt_state = DUMP_OBTAINED;
2961                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2962                 return;
2963         }
2964
2965         num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2966
2967         if (num_entries > IPR_NUM_SDT_ENTRIES)
2968                 num_entries = IPR_NUM_SDT_ENTRIES;
2969
2970         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2971
2972         for (i = 0; i < num_entries; i++) {
2973                 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2974                         driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2975                         break;
2976                 }
2977
2978                 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2979                         sdt_word = be32_to_cpu(sdt->entry[i].start_token);
2980                         if (ioa_cfg->sis64)
2981                                 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
2982                         else {
2983                                 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2984                                 end_off = be32_to_cpu(sdt->entry[i].end_token);
2985
2986                                 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
2987                                         bytes_to_copy = end_off - start_off;
2988                                 else
2989                                         valid = 0;
2990                         }
2991                         if (valid) {
2992                                 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2993                                         sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2994                                         continue;
2995                                 }
2996
2997                                 /* Copy data from adapter to driver buffers */
2998                                 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2999                                                             bytes_to_copy);
3000
3001                                 ioa_dump->hdr.len += bytes_copied;
3002
3003                                 if (bytes_copied != bytes_to_copy) {
3004                                         driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3005                                         break;
3006                                 }
3007                         }
3008                 }
3009         }
3010
3011         dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3012
3013         /* Update dump_header */
3014         driver_dump->hdr.len += ioa_dump->hdr.len;
3015         wmb();
3016         ioa_cfg->sdt_state = DUMP_OBTAINED;
3017         LEAVE;
3018 }
3019
3020 #else
3021 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
3022 #endif
3023
3024 /**
3025  * ipr_release_dump - Free adapter dump memory
3026  * @kref:       kref struct
3027  *
3028  * Return value:
3029  *      nothing
3030  **/
3031 static void ipr_release_dump(struct kref *kref)
3032 {
3033         struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
3034         struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3035         unsigned long lock_flags = 0;
3036         int i;
3037
3038         ENTER;
3039         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3040         ioa_cfg->dump = NULL;
3041         ioa_cfg->sdt_state = INACTIVE;
3042         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3043
3044         for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3045                 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3046
3047         kfree(dump);
3048         LEAVE;
3049 }
3050
3051 /**
3052  * ipr_worker_thread - Worker thread
3053  * @work:               ioa config struct
3054  *
3055  * Called at task level from a work thread. This function takes care
3056  * of adding and removing device from the mid-layer as configuration
3057  * changes are detected by the adapter.
3058  *
3059  * Return value:
3060  *      nothing
3061  **/
3062 static void ipr_worker_thread(struct work_struct *work)
3063 {
3064         unsigned long lock_flags;
3065         struct ipr_resource_entry *res;
3066         struct scsi_device *sdev;
3067         struct ipr_dump *dump;
3068         struct ipr_ioa_cfg *ioa_cfg =
3069                 container_of(work, struct ipr_ioa_cfg, work_q);
3070         u8 bus, target, lun;
3071         int did_work;
3072
3073         ENTER;
3074         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3075
3076         if (ioa_cfg->sdt_state == GET_DUMP) {
3077                 dump = ioa_cfg->dump;
3078                 if (!dump) {
3079                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3080                         return;
3081                 }
3082                 kref_get(&dump->kref);
3083                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3084                 ipr_get_ioa_dump(ioa_cfg, dump);
3085                 kref_put(&dump->kref, ipr_release_dump);
3086
3087                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3088                 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
3089                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3090                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3091                 return;
3092         }
3093
3094 restart:
3095         do {
3096                 did_work = 0;
3097                 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
3098                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3099                         return;
3100                 }
3101
3102                 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3103                         if (res->del_from_ml && res->sdev) {
3104                                 did_work = 1;
3105                                 sdev = res->sdev;
3106                                 if (!scsi_device_get(sdev)) {
3107                                         list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3108                                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3109                                         scsi_remove_device(sdev);
3110                                         scsi_device_put(sdev);
3111                                         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3112                                 }
3113                                 break;
3114                         }
3115                 }
3116         } while(did_work);
3117
3118         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3119                 if (res->add_to_ml) {
3120                         bus = res->bus;
3121                         target = res->target;
3122                         lun = res->lun;
3123                         res->add_to_ml = 0;
3124                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3125                         scsi_add_device(ioa_cfg->host, bus, target, lun);
3126                         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3127                         goto restart;
3128                 }
3129         }
3130
3131         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3132         kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3133         LEAVE;
3134 }
3135
3136 #ifdef CONFIG_SCSI_IPR_TRACE
3137 /**
3138  * ipr_read_trace - Dump the adapter trace
3139  * @filp:               open sysfs file
3140  * @kobj:               kobject struct
3141  * @bin_attr:           bin_attribute struct
3142  * @buf:                buffer
3143  * @off:                offset
3144  * @count:              buffer size
3145  *
3146  * Return value:
3147  *      number of bytes printed to buffer
3148  **/
3149 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3150                               struct bin_attribute *bin_attr,
3151                               char *buf, loff_t off, size_t count)
3152 {
3153         struct device *dev = container_of(kobj, struct device, kobj);
3154         struct Scsi_Host *shost = class_to_shost(dev);
3155         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3156         unsigned long lock_flags = 0;
3157         ssize_t ret;
3158
3159         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3160         ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3161                                 IPR_TRACE_SIZE);
3162         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3163
3164         return ret;
3165 }
3166
3167 static struct bin_attribute ipr_trace_attr = {
3168         .attr = {
3169                 .name = "trace",
3170                 .mode = S_IRUGO,
3171         },
3172         .size = 0,
3173         .read = ipr_read_trace,
3174 };
3175 #endif
3176
3177 /**
3178  * ipr_show_fw_version - Show the firmware version
3179  * @dev:        class device struct
3180  * @buf:        buffer
3181  *
3182  * Return value:
3183  *      number of bytes printed to buffer
3184  **/
3185 static ssize_t ipr_show_fw_version(struct device *dev,
3186                                    struct device_attribute *attr, char *buf)
3187 {
3188         struct Scsi_Host *shost = class_to_shost(dev);
3189         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3190         struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3191         unsigned long lock_flags = 0;
3192         int len;
3193
3194         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3195         len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3196                        ucode_vpd->major_release, ucode_vpd->card_type,
3197                        ucode_vpd->minor_release[0],