linux/drivers/scsi/ipr.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * ipr.c -- driver for IBM Power Linux RAID adapters
   4 *
   5 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
   6 *
   7 * Copyright (C) 2003, 2004 IBM Corporation
   8 */
   9
  10/*
  11 * Notes:
  12 *
  13 * This driver is used to control the following SCSI adapters:
  14 *
  15 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
  16 *
  17 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
  18 *              PCI-X Dual Channel Ultra 320 SCSI Adapter
  19 *              PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
  20 *              Embedded SCSI adapter on p615 and p655 systems
  21 *
  22 * Supported Hardware Features:
  23 *      - Ultra 320 SCSI controller
  24 *      - PCI-X host interface
  25 *      - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
  26 *      - Non-Volatile Write Cache
  27 *      - Supports attachment of non-RAID disks, tape, and optical devices
  28 *      - RAID Levels 0, 5, 10
  29 *      - Hot spare
  30 *      - Background Parity Checking
  31 *      - Background Data Scrubbing
  32 *      - Ability to increase the capacity of an existing RAID 5 disk array
  33 *              by adding disks
  34 *
  35 * Driver Features:
  36 *      - Tagged command queuing
  37 *      - Adapter microcode download
  38 *      - PCI hot plug
  39 *      - SCSI device hot plug
  40 *
  41 */
  42
  43#include <linux/fs.h>
  44#include <linux/init.h>
  45#include <linux/types.h>
  46#include <linux/errno.h>
  47#include <linux/kernel.h>
  48#include <linux/slab.h>
  49#include <linux/vmalloc.h>
  50#include <linux/ioport.h>
  51#include <linux/delay.h>
  52#include <linux/pci.h>
  53#include <linux/wait.h>
  54#include <linux/spinlock.h>
  55#include <linux/sched.h>
  56#include <linux/interrupt.h>
  57#include <linux/blkdev.h>
  58#include <linux/firmware.h>
  59#include <linux/module.h>
  60#include <linux/moduleparam.h>
  61#include <linux/libata.h>
  62#include <linux/hdreg.h>
  63#include <linux/reboot.h>
  64#include <linux/stringify.h>
  65#include <asm/io.h>
  66#include <asm/irq.h>
  67#include <asm/processor.h>
  68#include <scsi/scsi.h>
  69#include <scsi/scsi_host.h>
  70#include <scsi/scsi_tcq.h>
  71#include <scsi/scsi_eh.h>
  72#include <scsi/scsi_cmnd.h>
  73#include "ipr.h"
  74
  75/*
  76 *   Global Data
  77 */
  78static LIST_HEAD(ipr_ioa_head);
  79static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
  80static unsigned int ipr_max_speed = 1;
  81static int ipr_testmode = 0;
  82static unsigned int ipr_fastfail = 0;
  83static unsigned int ipr_transop_timeout = 0;
  84static unsigned int ipr_debug = 0;
  85static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
  86static unsigned int ipr_dual_ioa_raid = 1;
  87static unsigned int ipr_number_of_msix = 16;
  88static unsigned int ipr_fast_reboot;
  89static DEFINE_SPINLOCK(ipr_driver_lock);
  90
  91/* This table describes the differences between DMA controller chips */
  92static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
  93        { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
  94                .mailbox = 0x0042C,
  95                .max_cmds = 100,
  96                .cache_line_size = 0x20,
  97                .clear_isr = 1,
  98                .iopoll_weight = 0,
  99                {
 100                        .set_interrupt_mask_reg = 0x0022C,
 101                        .clr_interrupt_mask_reg = 0x00230,
 102                        .clr_interrupt_mask_reg32 = 0x00230,
 103                        .sense_interrupt_mask_reg = 0x0022C,
 104                        .sense_interrupt_mask_reg32 = 0x0022C,
 105                        .clr_interrupt_reg = 0x00228,
 106                        .clr_interrupt_reg32 = 0x00228,
 107                        .sense_interrupt_reg = 0x00224,
 108                        .sense_interrupt_reg32 = 0x00224,
 109                        .ioarrin_reg = 0x00404,
 110                        .sense_uproc_interrupt_reg = 0x00214,
 111                        .sense_uproc_interrupt_reg32 = 0x00214,
 112                        .set_uproc_interrupt_reg = 0x00214,
 113                        .set_uproc_interrupt_reg32 = 0x00214,
 114                        .clr_uproc_interrupt_reg = 0x00218,
 115                        .clr_uproc_interrupt_reg32 = 0x00218
 116                }
 117        },
 118        { /* Snipe and Scamp */
 119                .mailbox = 0x0052C,
 120                .max_cmds = 100,
 121                .cache_line_size = 0x20,
 122                .clear_isr = 1,
 123                .iopoll_weight = 0,
 124                {
 125                        .set_interrupt_mask_reg = 0x00288,
 126                        .clr_interrupt_mask_reg = 0x0028C,
 127                        .clr_interrupt_mask_reg32 = 0x0028C,
 128                        .sense_interrupt_mask_reg = 0x00288,
 129                        .sense_interrupt_mask_reg32 = 0x00288,
 130                        .clr_interrupt_reg = 0x00284,
 131                        .clr_interrupt_reg32 = 0x00284,
 132                        .sense_interrupt_reg = 0x00280,
 133                        .sense_interrupt_reg32 = 0x00280,
 134                        .ioarrin_reg = 0x00504,
 135                        .sense_uproc_interrupt_reg = 0x00290,
 136                        .sense_uproc_interrupt_reg32 = 0x00290,
 137                        .set_uproc_interrupt_reg = 0x00290,
 138                        .set_uproc_interrupt_reg32 = 0x00290,
 139                        .clr_uproc_interrupt_reg = 0x00294,
 140                        .clr_uproc_interrupt_reg32 = 0x00294
 141                }
 142        },
 143        { /* CRoC */
 144                .mailbox = 0x00044,
 145                .max_cmds = 1000,
 146                .cache_line_size = 0x20,
 147                .clear_isr = 0,
 148                .iopoll_weight = 64,
 149                {
 150                        .set_interrupt_mask_reg = 0x00010,
 151                        .clr_interrupt_mask_reg = 0x00018,
 152                        .clr_interrupt_mask_reg32 = 0x0001C,
 153                        .sense_interrupt_mask_reg = 0x00010,
 154                        .sense_interrupt_mask_reg32 = 0x00014,
 155                        .clr_interrupt_reg = 0x00008,
 156                        .clr_interrupt_reg32 = 0x0000C,
 157                        .sense_interrupt_reg = 0x00000,
 158                        .sense_interrupt_reg32 = 0x00004,
 159                        .ioarrin_reg = 0x00070,
 160                        .sense_uproc_interrupt_reg = 0x00020,
 161                        .sense_uproc_interrupt_reg32 = 0x00024,
 162                        .set_uproc_interrupt_reg = 0x00020,
 163                        .set_uproc_interrupt_reg32 = 0x00024,
 164                        .clr_uproc_interrupt_reg = 0x00028,
 165                        .clr_uproc_interrupt_reg32 = 0x0002C,
 166                        .init_feedback_reg = 0x0005C,
 167                        .dump_addr_reg = 0x00064,
 168                        .dump_data_reg = 0x00068,
 169                        .endian_swap_reg = 0x00084
 170                }
 171        },
 172};
 173
 174static const struct ipr_chip_t ipr_chip[] = {
 175        { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 176        { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 177        { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 178        { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 179        { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, true, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 180        { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
 181        { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
 182        { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
 183        { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
 184        { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
 185};
 186
 187static int ipr_max_bus_speeds[] = {
 188        IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
 189};
 190
 191MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
 192MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
 193module_param_named(max_speed, ipr_max_speed, uint, 0);
 194MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
 195module_param_named(log_level, ipr_log_level, uint, 0);
 196MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
 197module_param_named(testmode, ipr_testmode, int, 0);
 198MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
 199module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
 200MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
 201module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
 202MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
 203module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
 204MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
 205module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
 206MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
 207module_param_named(max_devs, ipr_max_devs, int, 0);
 208MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
 209                 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
 210module_param_named(number_of_msix, ipr_number_of_msix, int, 0);
 211MODULE_PARM_DESC(number_of_msix, "Specify the number of MSIX interrupts to use on capable adapters (1 - 16).  (default:16)");
 212module_param_named(fast_reboot, ipr_fast_reboot, int, S_IRUGO | S_IWUSR);
 213MODULE_PARM_DESC(fast_reboot, "Skip adapter shutdown during reboot. Set to 1 to enable. (default: 0)");
 214MODULE_LICENSE("GPL");
 215MODULE_VERSION(IPR_DRIVER_VERSION);
 216
 217/*  A constant array of IOASCs/URCs/Error Messages */
 218static const
 219struct ipr_error_table_t ipr_error_table[] = {
 220        {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
 221        "8155: An unknown error was received"},
 222        {0x00330000, 0, 0,
 223        "Soft underlength error"},
 224        {0x005A0000, 0, 0,
 225        "Command to be cancelled not found"},
 226        {0x00808000, 0, 0,
 227        "Qualified success"},
 228        {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
 229        "FFFE: Soft device bus error recovered by the IOA"},
 230        {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
 231        "4101: Soft device bus fabric error"},
 232        {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
 233        "FFFC: Logical block guard error recovered by the device"},
 234        {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
 235        "FFFC: Logical block reference tag error recovered by the device"},
 236        {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
 237        "4171: Recovered scatter list tag / sequence number error"},
 238        {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
 239        "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
 240        {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
 241        "4171: Recovered logical block sequence number error on IOA to Host transfer"},
 242        {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
 243        "FFFD: Recovered logical block reference tag error detected by the IOA"},
 244        {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
 245        "FFFD: Logical block guard error recovered by the IOA"},
 246        {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
 247        "FFF9: Device sector reassign successful"},
 248        {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
 249        "FFF7: Media error recovered by device rewrite procedures"},
 250        {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
 251        "7001: IOA sector reassignment successful"},
 252        {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
 253        "FFF9: Soft media error. Sector reassignment recommended"},
 254        {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
 255        "FFF7: Media error recovered by IOA rewrite procedures"},
 256        {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
 257        "FF3D: Soft PCI bus error recovered by the IOA"},
 258        {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
 259        "FFF6: Device hardware error recovered by the IOA"},
 260        {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
 261        "FFF6: Device hardware error recovered by the device"},
 262        {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
 263        "FF3D: Soft IOA error recovered by the IOA"},
 264        {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
 265        "FFFA: Undefined device response recovered by the IOA"},
 266        {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
 267        "FFF6: Device bus error, message or command phase"},
 268        {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
 269        "FFFE: Task Management Function failed"},
 270        {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
 271        "FFF6: Failure prediction threshold exceeded"},
 272        {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
 273        "8009: Impending cache battery pack failure"},
 274        {0x02040100, 0, 0,
 275        "Logical Unit in process of becoming ready"},
 276        {0x02040200, 0, 0,
 277        "Initializing command required"},
 278        {0x02040400, 0, 0,
 279        "34FF: Disk device format in progress"},
 280        {0x02040C00, 0, 0,
 281        "Logical unit not accessible, target port in unavailable state"},
 282        {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
 283        "9070: IOA requested reset"},
 284        {0x023F0000, 0, 0,
 285        "Synchronization required"},
 286        {0x02408500, 0, 0,
 287        "IOA microcode download required"},
 288        {0x02408600, 0, 0,
 289        "Device bus connection is prohibited by host"},
 290        {0x024E0000, 0, 0,
 291        "No ready, IOA shutdown"},
 292        {0x025A0000, 0, 0,
 293        "Not ready, IOA has been shutdown"},
 294        {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
 295        "3020: Storage subsystem configuration error"},
 296        {0x03110B00, 0, 0,
 297        "FFF5: Medium error, data unreadable, recommend reassign"},
 298        {0x03110C00, 0, 0,
 299        "7000: Medium error, data unreadable, do not reassign"},
 300        {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
 301        "FFF3: Disk media format bad"},
 302        {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
 303        "3002: Addressed device failed to respond to selection"},
 304        {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
 305        "3100: Device bus error"},
 306        {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
 307        "3109: IOA timed out a device command"},
 308        {0x04088000, 0, 0,
 309        "3120: SCSI bus is not operational"},
 310        {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
 311        "4100: Hard device bus fabric error"},
 312        {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
 313        "310C: Logical block guard error detected by the device"},
 314        {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
 315        "310C: Logical block reference tag error detected by the device"},
 316        {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
 317        "4170: Scatter list tag / sequence number error"},
 318        {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
 319        "8150: Logical block CRC error on IOA to Host transfer"},
 320        {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
 321        "4170: Logical block sequence number error on IOA to Host transfer"},
 322        {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
 323        "310D: Logical block reference tag error detected by the IOA"},
 324        {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
 325        "310D: Logical block guard error detected by the IOA"},
 326        {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
 327        "9000: IOA reserved area data check"},
 328        {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
 329        "9001: IOA reserved area invalid data pattern"},
 330        {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
 331        "9002: IOA reserved area LRC error"},
 332        {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
 333        "Hardware Error, IOA metadata access error"},
 334        {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
 335        "102E: Out of alternate sectors for disk storage"},
 336        {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
 337        "FFF4: Data transfer underlength error"},
 338        {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
 339        "FFF4: Data transfer overlength error"},
 340        {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
 341        "3400: Logical unit failure"},
 342        {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
 343        "FFF4: Device microcode is corrupt"},
 344        {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
 345        "8150: PCI bus error"},
 346        {0x04430000, 1, 0,
 347        "Unsupported device bus message received"},
 348        {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
 349        "FFF4: Disk device problem"},
 350        {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
 351        "8150: Permanent IOA failure"},
 352        {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
 353        "3010: Disk device returned wrong response to IOA"},
 354        {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
 355        "8151: IOA microcode error"},
 356        {0x04448500, 0, 0,
 357        "Device bus status error"},
 358        {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
 359        "8157: IOA error requiring IOA reset to recover"},
 360        {0x04448700, 0, 0,
 361        "ATA device status error"},
 362        {0x04490000, 0, 0,
 363        "Message reject received from the device"},
 364        {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
 365        "8008: A permanent cache battery pack failure occurred"},
 366        {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
 367        "9090: Disk unit has been modified after the last known status"},
 368        {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
 369        "9081: IOA detected device error"},
 370        {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
 371        "9082: IOA detected device error"},
 372        {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
 373        "3110: Device bus error, message or command phase"},
 374        {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
 375        "3110: SAS Command / Task Management Function failed"},
 376        {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
 377        "9091: Incorrect hardware configuration change has been detected"},
 378        {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
 379        "9073: Invalid multi-adapter configuration"},
 380        {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
 381        "4010: Incorrect connection between cascaded expanders"},
 382        {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
 383        "4020: Connections exceed IOA design limits"},
 384        {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
 385        "4030: Incorrect multipath connection"},
 386        {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
 387        "4110: Unsupported enclosure function"},
 388        {0x04679800, 0, IPR_DEFAULT_LOG_LEVEL,
 389        "4120: SAS cable VPD cannot be read"},
 390        {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
 391        "FFF4: Command to logical unit failed"},
 392        {0x05240000, 1, 0,
 393        "Illegal request, invalid request type or request packet"},
 394        {0x05250000, 0, 0,
 395        "Illegal request, invalid resource handle"},
 396        {0x05258000, 0, 0,
 397        "Illegal request, commands not allowed to this device"},
 398        {0x05258100, 0, 0,
 399        "Illegal request, command not allowed to a secondary adapter"},
 400        {0x05258200, 0, 0,
 401        "Illegal request, command not allowed to a non-optimized resource"},
 402        {0x05260000, 0, 0,
 403        "Illegal request, invalid field in parameter list"},
 404        {0x05260100, 0, 0,
 405        "Illegal request, parameter not supported"},
 406        {0x05260200, 0, 0,
 407        "Illegal request, parameter value invalid"},
 408        {0x052C0000, 0, 0,
 409        "Illegal request, command sequence error"},
 410        {0x052C8000, 1, 0,
 411        "Illegal request, dual adapter support not enabled"},
 412        {0x052C8100, 1, 0,
 413        "Illegal request, another cable connector was physically disabled"},
 414        {0x054E8000, 1, 0,
 415        "Illegal request, inconsistent group id/group count"},
 416        {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
 417        "9031: Array protection temporarily suspended, protection resuming"},
 418        {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
 419        "9040: Array protection temporarily suspended, protection resuming"},
 420        {0x060B0100, 0, IPR_DEFAULT_LOG_LEVEL,
 421        "4080: IOA exceeded maximum operating temperature"},
 422        {0x060B8000, 0, IPR_DEFAULT_LOG_LEVEL,
 423        "4085: Service required"},
 424        {0x060B8100, 0, IPR_DEFAULT_LOG_LEVEL,
 425        "4086: SAS Adapter Hardware Configuration Error"},
 426        {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
 427        "3140: Device bus not ready to ready transition"},
 428        {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
 429        "FFFB: SCSI bus was reset"},
 430        {0x06290500, 0, 0,
 431        "FFFE: SCSI bus transition to single ended"},
 432        {0x06290600, 0, 0,
 433        "FFFE: SCSI bus transition to LVD"},
 434        {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
 435        "FFFB: SCSI bus was reset by another initiator"},
 436        {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
 437        "3029: A device replacement has occurred"},
 438        {0x063F8300, 0, IPR_DEFAULT_LOG_LEVEL,
 439        "4102: Device bus fabric performance degradation"},
 440        {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
 441        "9051: IOA cache data exists for a missing or failed device"},
 442        {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
 443        "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
 444        {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
 445        "9025: Disk unit is not supported at its physical location"},
 446        {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
 447        "3020: IOA detected a SCSI bus configuration error"},
 448        {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
 449        "3150: SCSI bus configuration error"},
 450        {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
 451        "9074: Asymmetric advanced function disk configuration"},
 452        {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
 453        "4040: Incomplete multipath connection between IOA and enclosure"},
 454        {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
 455        "4041: Incomplete multipath connection between enclosure and device"},
 456        {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
 457        "9075: Incomplete multipath connection between IOA and remote IOA"},
 458        {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
 459        "9076: Configuration error, missing remote IOA"},
 460        {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
 461        "4050: Enclosure does not support a required multipath function"},
 462        {0x06679800, 0, IPR_DEFAULT_LOG_LEVEL,
 463        "4121: Configuration error, required cable is missing"},
 464        {0x06679900, 0, IPR_DEFAULT_LOG_LEVEL,
 465        "4122: Cable is not plugged into the correct location on remote IOA"},
 466        {0x06679A00, 0, IPR_DEFAULT_LOG_LEVEL,
 467        "4123: Configuration error, invalid cable vital product data"},
 468        {0x06679B00, 0, IPR_DEFAULT_LOG_LEVEL,
 469        "4124: Configuration error, both cable ends are plugged into the same IOA"},
 470        {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
 471        "4070: Logically bad block written on device"},
 472        {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
 473        "9041: Array protection temporarily suspended"},
 474        {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
 475        "9042: Corrupt array parity detected on specified device"},
 476        {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
 477        "9030: Array no longer protected due to missing or failed disk unit"},
 478        {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
 479        "9071: Link operational transition"},
 480        {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
 481        "9072: Link not operational transition"},
 482        {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
 483        "9032: Array exposed but still protected"},
 484        {0x066B8300, 0, IPR_DEBUG_LOG_LEVEL,
 485        "70DD: Device forced failed by disrupt device command"},
 486        {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
 487        "4061: Multipath redundancy level got better"},
 488        {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
 489        "4060: Multipath redundancy level got worse"},
 490        {0x06808100, 0, IPR_DEBUG_LOG_LEVEL,
 491        "9083: Device raw mode enabled"},
 492        {0x06808200, 0, IPR_DEBUG_LOG_LEVEL,
 493        "9084: Device raw mode disabled"},
 494        {0x07270000, 0, 0,
 495        "Failure due to other device"},
 496        {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
 497        "9008: IOA does not support functions expected by devices"},
 498        {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
 499        "9010: Cache data associated with attached devices cannot be found"},
 500        {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
 501        "9011: Cache data belongs to devices other than those attached"},
 502        {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
 503        "9020: Array missing 2 or more devices with only 1 device present"},
 504        {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
 505        "9021: Array missing 2 or more devices with 2 or more devices present"},
 506        {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
 507        "9022: Exposed array is missing a required device"},
 508        {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
 509        "9023: Array member(s) not at required physical locations"},
 510        {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
 511        "9024: Array not functional due to present hardware configuration"},
 512        {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
 513        "9026: Array not functional due to present hardware configuration"},
 514        {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
 515        "9027: Array is missing a device and parity is out of sync"},
 516        {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
 517        "9028: Maximum number of arrays already exist"},
 518        {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
 519        "9050: Required cache data cannot be located for a disk unit"},
 520        {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
 521        "9052: Cache data exists for a device that has been modified"},
 522        {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
 523        "9054: IOA resources not available due to previous problems"},
 524        {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
 525        "9092: Disk unit requires initialization before use"},
 526        {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
 527        "9029: Incorrect hardware configuration change has been detected"},
 528        {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
 529        "9060: One or more disk pairs are missing from an array"},
 530        {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
 531        "9061: One or more disks are missing from an array"},
 532        {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
 533        "9062: One or more disks are missing from an array"},
 534        {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
 535        "9063: Maximum number of functional arrays has been exceeded"},
 536        {0x07279A00, 0, 0,
 537        "Data protect, other volume set problem"},
 538        {0x0B260000, 0, 0,
 539        "Aborted command, invalid descriptor"},
 540        {0x0B3F9000, 0, 0,
 541        "Target operating conditions have changed, dual adapter takeover"},
 542        {0x0B530200, 0, 0,
 543        "Aborted command, medium removal prevented"},
 544        {0x0B5A0000, 0, 0,
 545        "Command terminated by host"},
 546        {0x0B5B8000, 0, 0,
 547        "Aborted command, command terminated by host"}
 548};
 549
 550static const struct ipr_ses_table_entry ipr_ses_table[] = {
 551        { "2104-DL1        ", "XXXXXXXXXXXXXXXX", 80 },
 552        { "2104-TL1        ", "XXXXXXXXXXXXXXXX", 80 },
 553        { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
 554        { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
 555        { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
 556        { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
 557        { "2104-DU3        ", "XXXXXXXXXXXXXXXX", 160 },
 558        { "2104-TU3        ", "XXXXXXXXXXXXXXXX", 160 },
 559        { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
 560        { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
 561        { "St  V1S2        ", "XXXXXXXXXXXXXXXX", 160 },
 562        { "HSBPD4M  PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
 563        { "VSBPD1H   U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
 564};
 565
 566/*
 567 *  Function Prototypes
 568 */
 569static int ipr_reset_alert(struct ipr_cmnd *);
 570static void ipr_process_ccn(struct ipr_cmnd *);
 571static void ipr_process_error(struct ipr_cmnd *);
 572static void ipr_reset_ioa_job(struct ipr_cmnd *);
 573static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
 574                                   enum ipr_shutdown_type);
 575
 576#ifdef CONFIG_SCSI_IPR_TRACE
 577/**
 578 * ipr_trc_hook - Add a trace entry to the driver trace
 579 * @ipr_cmd:    ipr command struct
 580 * @type:               trace type
 581 * @add_data:   additional data
 582 *
 583 * Return value:
 584 *      none
 585 **/
 586static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
 587                         u8 type, u32 add_data)
 588{
 589        struct ipr_trace_entry *trace_entry;
 590        struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 591        unsigned int trace_index;
 592
 593        trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK;
 594        trace_entry = &ioa_cfg->trace[trace_index];
 595        trace_entry->time = jiffies;
 596        trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
 597        trace_entry->type = type;
 598        if (ipr_cmd->ioa_cfg->sis64)
 599                trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
 600        else
 601                trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
 602        trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
 603        trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
 604        trace_entry->u.add_data = add_data;
 605        wmb();
 606}
 607#else
 608#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0)
 609#endif
 610
 611/**
 612 * ipr_lock_and_done - Acquire lock and complete command
 613 * @ipr_cmd:    ipr command struct
 614 *
 615 * Return value:
 616 *      none
 617 **/
 618static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd)
 619{
 620        unsigned long lock_flags;
 621        struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 622
 623        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
 624        ipr_cmd->done(ipr_cmd);
 625        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
 626}
 627
 628/**
 629 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
 630 * @ipr_cmd:    ipr command struct
 631 *
 632 * Return value:
 633 *      none
 634 **/
 635static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
 636{
 637        struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
 638        struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
 639        struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
 640        dma_addr_t dma_addr = ipr_cmd->dma_addr;
 641        int hrrq_id;
 642
 643        hrrq_id = ioarcb->cmd_pkt.hrrq_id;
 644        memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
 645        ioarcb->cmd_pkt.hrrq_id = hrrq_id;
 646        ioarcb->data_transfer_length = 0;
 647        ioarcb->read_data_transfer_length = 0;
 648        ioarcb->ioadl_len = 0;
 649        ioarcb->read_ioadl_len = 0;
 650
 651        if (ipr_cmd->ioa_cfg->sis64) {
 652                ioarcb->u.sis64_addr_data.data_ioadl_addr =
 653                        cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
 654                ioasa64->u.gata.status = 0;
 655        } else {
 656                ioarcb->write_ioadl_addr =
 657                        cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
 658                ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
 659                ioasa->u.gata.status = 0;
 660        }
 661
 662        ioasa->hdr.ioasc = 0;
 663        ioasa->hdr.residual_data_len = 0;
 664        ipr_cmd->scsi_cmd = NULL;
 665        ipr_cmd->qc = NULL;
 666        ipr_cmd->sense_buffer[0] = 0;
 667        ipr_cmd->dma_use_sg = 0;
 668}
 669
 670/**
 671 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
 672 * @ipr_cmd:    ipr command struct
 673 * @fast_done:  fast done function call-back
 674 *
 675 * Return value:
 676 *      none
 677 **/
 678static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd,
 679                              void (*fast_done) (struct ipr_cmnd *))
 680{
 681        ipr_reinit_ipr_cmnd(ipr_cmd);
 682        ipr_cmd->u.scratch = 0;
 683        ipr_cmd->sibling = NULL;
 684        ipr_cmd->eh_comp = NULL;
 685        ipr_cmd->fast_done = fast_done;
 686        timer_setup(&ipr_cmd->timer, NULL, 0);
 687}
 688
 689/**
 690 * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
 691 * @hrrq:       hrr queue
 692 *
 693 * Return value:
 694 *      pointer to ipr command struct
 695 **/
 696static
 697struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue *hrrq)
 698{
 699        struct ipr_cmnd *ipr_cmd = NULL;
 700
 701        if (likely(!list_empty(&hrrq->hrrq_free_q))) {
 702                ipr_cmd = list_entry(hrrq->hrrq_free_q.next,
 703                        struct ipr_cmnd, queue);
 704                list_del(&ipr_cmd->queue);
 705        }
 706
 707
 708        return ipr_cmd;
 709}
 710
 711/**
 712 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it
 713 * @ioa_cfg:    ioa config struct
 714 *
 715 * Return value:
 716 *      pointer to ipr command struct
 717 **/
 718static
 719struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
 720{
 721        struct ipr_cmnd *ipr_cmd =
 722                __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]);
 723        ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
 724        return ipr_cmd;
 725}
 726
 727/**
 728 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
 729 * @ioa_cfg:    ioa config struct
 730 * @clr_ints:     interrupts to clear
 731 *
 732 * This function masks all interrupts on the adapter, then clears the
 733 * interrupts specified in the mask
 734 *
 735 * Return value:
 736 *      none
 737 **/
 738static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
 739                                          u32 clr_ints)
 740{
 741        int i;
 742
 743        /* Stop new interrupts */
 744        for (i = 0; i < ioa_cfg->hrrq_num; i++) {
 745                spin_lock(&ioa_cfg->hrrq[i]._lock);
 746                ioa_cfg->hrrq[i].allow_interrupts = 0;
 747                spin_unlock(&ioa_cfg->hrrq[i]._lock);
 748        }
 749
 750        /* Set interrupt mask to stop all new interrupts */
 751        if (ioa_cfg->sis64)
 752                writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
 753        else
 754                writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
 755
 756        /* Clear any pending interrupts */
 757        if (ioa_cfg->sis64)
 758                writel(~0, ioa_cfg->regs.clr_interrupt_reg);
 759        writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
 760        readl(ioa_cfg->regs.sense_interrupt_reg);
 761}
 762
 763/**
 764 * ipr_save_pcix_cmd_reg - Save PCI-X command register
 765 * @ioa_cfg:    ioa config struct
 766 *
 767 * Return value:
 768 *      0 on success / -EIO on failure
 769 **/
 770static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
 771{
 772        int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
 773
 774        if (pcix_cmd_reg == 0)
 775                return 0;
 776
 777        if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
 778                                 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
 779                dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
 780                return -EIO;
 781        }
 782
 783        ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
 784        return 0;
 785}
 786
 787/**
 788 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
 789 * @ioa_cfg:    ioa config struct
 790 *
 791 * Return value:
 792 *      0 on success / -EIO on failure
 793 **/
 794static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
 795{
 796        int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
 797
 798        if (pcix_cmd_reg) {
 799                if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
 800                                          ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
 801                        dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
 802                        return -EIO;
 803                }
 804        }
 805
 806        return 0;
 807}
 808
 809/**
 810 * __ipr_sata_eh_done - done function for aborted SATA commands
 811 * @ipr_cmd:    ipr command struct
 812 *
 813 * This function is invoked for ops generated to SATA
 814 * devices which are being aborted.
 815 *
 816 * Return value:
 817 *      none
 818 **/
 819static void __ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
 820{
 821        struct ata_queued_cmd *qc = ipr_cmd->qc;
 822        struct ipr_sata_port *sata_port = qc->ap->private_data;
 823
 824        qc->err_mask |= AC_ERR_OTHER;
 825        sata_port->ioasa.status |= ATA_BUSY;
 826        ata_qc_complete(qc);
 827        if (ipr_cmd->eh_comp)
 828                complete(ipr_cmd->eh_comp);
 829        list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
 830}
 831
 832/**
 833 * ipr_sata_eh_done - done function for aborted SATA commands
 834 * @ipr_cmd:    ipr command struct
 835 *
 836 * This function is invoked for ops generated to SATA
 837 * devices which are being aborted.
 838 *
 839 * Return value:
 840 *      none
 841 **/
 842static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
 843{
 844        struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
 845        unsigned long hrrq_flags;
 846
 847        spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
 848        __ipr_sata_eh_done(ipr_cmd);
 849        spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
 850}
 851
 852/**
 853 * __ipr_scsi_eh_done - mid-layer done function for aborted ops
 854 * @ipr_cmd:    ipr command struct
 855 *
 856 * This function is invoked by the interrupt handler for
 857 * ops generated by the SCSI mid-layer which are being aborted.
 858 *
 859 * Return value:
 860 *      none
 861 **/
 862static void __ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
 863{
 864        struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
 865
 866        scsi_cmd->result |= (DID_ERROR << 16);
 867
 868        scsi_dma_unmap(ipr_cmd->scsi_cmd);
 869        scsi_cmd->scsi_done(scsi_cmd);
 870        if (ipr_cmd->eh_comp)
 871                complete(ipr_cmd->eh_comp);
 872        list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
 873}
 874
 875/**
 876 * ipr_scsi_eh_done - mid-layer done function for aborted ops
 877 * @ipr_cmd:    ipr command struct
 878 *
 879 * This function is invoked by the interrupt handler for
 880 * ops generated by the SCSI mid-layer which are being aborted.
 881 *
 882 * Return value:
 883 *      none
 884 **/
 885static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
 886{
 887        unsigned long hrrq_flags;
 888        struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
 889
 890        spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
 891        __ipr_scsi_eh_done(ipr_cmd);
 892        spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
 893}
 894
 895/**
 896 * ipr_fail_all_ops - Fails all outstanding ops.
 897 * @ioa_cfg:    ioa config struct
 898 *
 899 * This function fails all outstanding ops.
 900 *
 901 * Return value:
 902 *      none
 903 **/
 904static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
 905{
 906        struct ipr_cmnd *ipr_cmd, *temp;
 907        struct ipr_hrr_queue *hrrq;
 908
 909        ENTER;
 910        for_each_hrrq(hrrq, ioa_cfg) {
 911                spin_lock(&hrrq->_lock);
 912                list_for_each_entry_safe(ipr_cmd,
 913                                        temp, &hrrq->hrrq_pending_q, queue) {
 914                        list_del(&ipr_cmd->queue);
 915
 916                        ipr_cmd->s.ioasa.hdr.ioasc =
 917                                cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
 918                        ipr_cmd->s.ioasa.hdr.ilid =
 919                                cpu_to_be32(IPR_DRIVER_ILID);
 920
 921                        if (ipr_cmd->scsi_cmd)
 922                                ipr_cmd->done = __ipr_scsi_eh_done;
 923                        else if (ipr_cmd->qc)
 924                                ipr_cmd->done = __ipr_sata_eh_done;
 925
 926                        ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH,
 927                                     IPR_IOASC_IOA_WAS_RESET);
 928                        del_timer(&ipr_cmd->timer);
 929                        ipr_cmd->done(ipr_cmd);
 930                }
 931                spin_unlock(&hrrq->_lock);
 932        }
 933        LEAVE;
 934}
 935
 936/**
 937 * ipr_send_command -  Send driver initiated requests.
 938 * @ipr_cmd:            ipr command struct
 939 *
 940 * This function sends a command to the adapter using the correct write call.
 941 * In the case of sis64, calculate the ioarcb size required. Then or in the
 942 * appropriate bits.
 943 *
 944 * Return value:
 945 *      none
 946 **/
 947static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
 948{
 949        struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 950        dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
 951
 952        if (ioa_cfg->sis64) {
 953                /* The default size is 256 bytes */
 954                send_dma_addr |= 0x1;
 955
 956                /* If the number of ioadls * size of ioadl > 128 bytes,
 957                   then use a 512 byte ioarcb */
 958                if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
 959                        send_dma_addr |= 0x4;
 960                writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
 961        } else
 962                writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
 963}
 964
 965/**
 966 * ipr_do_req -  Send driver initiated requests.
 967 * @ipr_cmd:            ipr command struct
 968 * @done:                       done function
 969 * @timeout_func:       timeout function
 970 * @timeout:            timeout value
 971 *
 972 * This function sends the specified command to the adapter with the
 973 * timeout given. The done function is invoked on command completion.
 974 *
 975 * Return value:
 976 *      none
 977 **/
 978static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
 979                       void (*done) (struct ipr_cmnd *),
 980                       void (*timeout_func) (struct timer_list *), u32 timeout)
 981{
 982        list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
 983
 984        ipr_cmd->done = done;
 985
 986        ipr_cmd->timer.expires = jiffies + timeout;
 987        ipr_cmd->timer.function = timeout_func;
 988
 989        add_timer(&ipr_cmd->timer);
 990
 991        ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
 992
 993        ipr_send_command(ipr_cmd);
 994}
 995
 996/**
 997 * ipr_internal_cmd_done - Op done function for an internally generated op.
 998 * @ipr_cmd:    ipr command struct
 999 *
1000 * This function is the op done function for an internally generated,
1001 * blocking op. It simply wakes the sleeping thread.
1002 *
1003 * Return value:
1004 *      none
1005 **/
1006static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
1007{
1008        if (ipr_cmd->sibling)
1009                ipr_cmd->sibling = NULL;
1010        else
1011                complete(&ipr_cmd->completion);
1012}
1013
1014/**
1015 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
1016 * @ipr_cmd:    ipr command struct
1017 * @dma_addr:   dma address
1018 * @len:        transfer length
1019 * @flags:      ioadl flag value
1020 *
1021 * This function initializes an ioadl in the case where there is only a single
1022 * descriptor.
1023 *
1024 * Return value:
1025 *      nothing
1026 **/
1027static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
1028                           u32 len, int flags)
1029{
1030        struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
1031        struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
1032
1033        ipr_cmd->dma_use_sg = 1;
1034
1035        if (ipr_cmd->ioa_cfg->sis64) {
1036                ioadl64->flags = cpu_to_be32(flags);
1037                ioadl64->data_len = cpu_to_be32(len);
1038                ioadl64->address = cpu_to_be64(dma_addr);
1039
1040                ipr_cmd->ioarcb.ioadl_len =
1041                        cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
1042                ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1043        } else {
1044                ioadl->flags_and_data_len = cpu_to_be32(flags | len);
1045                ioadl->address = cpu_to_be32(dma_addr);
1046
1047                if (flags == IPR_IOADL_FLAGS_READ_LAST) {
1048                        ipr_cmd->ioarcb.read_ioadl_len =
1049                                cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1050                        ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
1051                } else {
1052                        ipr_cmd->ioarcb.ioadl_len =
1053                                cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1054                        ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1055                }
1056        }
1057}
1058
1059/**
1060 * ipr_send_blocking_cmd - Send command and sleep on its completion.
1061 * @ipr_cmd:    ipr command struct
1062 * @timeout_func:       function to invoke if command times out
1063 * @timeout:    timeout
1064 *
1065 * Return value:
1066 *      none
1067 **/
1068static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
1069                                  void (*timeout_func) (struct timer_list *),
1070                                  u32 timeout)
1071{
1072        struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1073
1074        init_completion(&ipr_cmd->completion);
1075        ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
1076
1077        spin_unlock_irq(ioa_cfg->host->host_lock);
1078        wait_for_completion(&ipr_cmd->completion);
1079        spin_lock_irq(ioa_cfg->host->host_lock);
1080}
1081
1082static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg)
1083{
1084        unsigned int hrrq;
1085
1086        if (ioa_cfg->hrrq_num == 1)
1087                hrrq = 0;
1088        else {
1089                hrrq = atomic_add_return(1, &ioa_cfg->hrrq_index);
1090                hrrq = (hrrq % (ioa_cfg->hrrq_num - 1)) + 1;
1091        }
1092        return hrrq;
1093}
1094
1095/**
1096 * ipr_send_hcam - Send an HCAM to the adapter.
1097 * @ioa_cfg:    ioa config struct
1098 * @type:               HCAM type
1099 * @hostrcb:    hostrcb struct
1100 *
1101 * This function will send a Host Controlled Async command to the adapter.
1102 * If HCAMs are currently not allowed to be issued to the adapter, it will
1103 * place the hostrcb on the free queue.
1104 *
1105 * Return value:
1106 *      none
1107 **/
1108static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
1109                          struct ipr_hostrcb *hostrcb)
1110{
1111        struct ipr_cmnd *ipr_cmd;
1112        struct ipr_ioarcb *ioarcb;
1113
1114        if (ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
1115                ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
1116                list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
1117                list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
1118
1119                ipr_cmd->u.hostrcb = hostrcb;
1120                ioarcb = &ipr_cmd->ioarcb;
1121
1122                ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
1123                ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
1124                ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
1125                ioarcb->cmd_pkt.cdb[1] = type;
1126                ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
1127                ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
1128
1129                ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
1130                               sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
1131
1132                if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
1133                        ipr_cmd->done = ipr_process_ccn;
1134                else
1135                        ipr_cmd->done = ipr_process_error;
1136
1137                ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
1138
1139                ipr_send_command(ipr_cmd);
1140        } else {
1141                list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
1142        }
1143}
1144
1145/**
1146 * ipr_update_ata_class - Update the ata class in the resource entry
1147 * @res:        resource entry struct
1148 * @proto:      cfgte device bus protocol value
1149 *
1150 * Return value:
1151 *      none
1152 **/
1153static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1154{
1155        switch (proto) {
1156        case IPR_PROTO_SATA:
1157        case IPR_PROTO_SAS_STP:
1158                res->ata_class = ATA_DEV_ATA;
1159                break;
1160        case IPR_PROTO_SATA_ATAPI:
1161        case IPR_PROTO_SAS_STP_ATAPI:
1162                res->ata_class = ATA_DEV_ATAPI;
1163                break;
1164        default:
1165                res->ata_class = ATA_DEV_UNKNOWN;
1166                break;
1167        }
1168}
1169
1170/**
1171 * ipr_init_res_entry - Initialize a resource entry struct.
1172 * @res:        resource entry struct
1173 * @cfgtew:     config table entry wrapper struct
1174 *
1175 * Return value:
1176 *      none
1177 **/
1178static void ipr_init_res_entry(struct ipr_resource_entry *res,
1179                               struct ipr_config_table_entry_wrapper *cfgtew)
1180{
1181        int found = 0;
1182        unsigned int proto;
1183        struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1184        struct ipr_resource_entry *gscsi_res = NULL;
1185
1186        res->needs_sync_complete = 0;
1187        res->in_erp = 0;
1188        res->add_to_ml = 0;
1189        res->del_from_ml = 0;
1190        res->resetting_device = 0;
1191        res->reset_occurred = 0;
1192        res->sdev = NULL;
1193        res->sata_port = NULL;
1194
1195        if (ioa_cfg->sis64) {
1196                proto = cfgtew->u.cfgte64->proto;
1197                res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1198                res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1199                res->qmodel = IPR_QUEUEING_MODEL64(res);
1200                res->type = cfgtew->u.cfgte64->res_type;
1201
1202                memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1203                        sizeof(res->res_path));
1204
1205                res->bus = 0;
1206                memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1207                        sizeof(res->dev_lun.scsi_lun));
1208                res->lun = scsilun_to_int(&res->dev_lun);
1209
1210                if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1211                        list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1212                                if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1213                                        found = 1;
1214                                        res->target = gscsi_res->target;
1215                                        break;
1216                                }
1217                        }
1218                        if (!found) {
1219                                res->target = find_first_zero_bit(ioa_cfg->target_ids,
1220                                                                  ioa_cfg->max_devs_supported);
1221                                set_bit(res->target, ioa_cfg->target_ids);
1222                        }
1223                } else if (res->type == IPR_RES_TYPE_IOAFP) {
1224                        res->bus = IPR_IOAFP_VIRTUAL_BUS;
1225                        res->target = 0;
1226                } else if (res->type == IPR_RES_TYPE_ARRAY) {
1227                        res->bus = IPR_ARRAY_VIRTUAL_BUS;
1228                        res->target = find_first_zero_bit(ioa_cfg->array_ids,
1229                                                          ioa_cfg->max_devs_supported);
1230                        set_bit(res->target, ioa_cfg->array_ids);
1231                } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1232                        res->bus = IPR_VSET_VIRTUAL_BUS;
1233                        res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1234                                                          ioa_cfg->max_devs_supported);
1235                        set_bit(res->target, ioa_cfg->vset_ids);
1236                } else {
1237                        res->target = find_first_zero_bit(ioa_cfg->target_ids,
1238                                                          ioa_cfg->max_devs_supported);
1239                        set_bit(res->target, ioa_cfg->target_ids);
1240                }
1241        } else {
1242                proto = cfgtew->u.cfgte->proto;
1243                res->qmodel = IPR_QUEUEING_MODEL(res);
1244                res->flags = cfgtew->u.cfgte->flags;
1245                if (res->flags & IPR_IS_IOA_RESOURCE)
1246                        res->type = IPR_RES_TYPE_IOAFP;
1247                else
1248                        res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1249
1250                res->bus = cfgtew->u.cfgte->res_addr.bus;
1251                res->target = cfgtew->u.cfgte->res_addr.target;
1252                res->lun = cfgtew->u.cfgte->res_addr.lun;
1253                res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1254        }
1255
1256        ipr_update_ata_class(res, proto);
1257}
1258
1259/**
1260 * ipr_is_same_device - Determine if two devices are the same.
1261 * @res:        resource entry struct
1262 * @cfgtew:     config table entry wrapper struct
1263 *
1264 * Return value:
1265 *      1 if the devices are the same / 0 otherwise
1266 **/
1267static int ipr_is_same_device(struct ipr_resource_entry *res,
1268                              struct ipr_config_table_entry_wrapper *cfgtew)
1269{
1270        if (res->ioa_cfg->sis64) {
1271                if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1272                                        sizeof(cfgtew->u.cfgte64->dev_id)) &&
1273                        !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1274                                        sizeof(cfgtew->u.cfgte64->lun))) {
1275                        return 1;
1276                }
1277        } else {
1278                if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1279                    res->target == cfgtew->u.cfgte->res_addr.target &&
1280                    res->lun == cfgtew->u.cfgte->res_addr.lun)
1281                        return 1;
1282        }
1283
1284        return 0;
1285}
1286
1287/**
1288 * __ipr_format_res_path - Format the resource path for printing.
1289 * @res_path:   resource path
1290 * @buffer:     buffer
1291 * @len:        length of buffer provided
1292 *
1293 * Return value:
1294 *      pointer to buffer
1295 **/
1296static char *__ipr_format_res_path(u8 *res_path, char *buffer, int len)
1297{
1298        int i;
1299        char *p = buffer;
1300
1301        *p = '\0';
1302        p += scnprintf(p, buffer + len - p, "%02X", res_path[0]);
1303        for (i = 1; res_path[i] != 0xff && i < IPR_RES_PATH_BYTES; i++)
1304                p += scnprintf(p, buffer + len - p, "-%02X", res_path[i]);
1305
1306        return buffer;
1307}
1308
1309/**
1310 * ipr_format_res_path - Format the resource path for printing.
1311 * @ioa_cfg:    ioa config struct
1312 * @res_path:   resource path
1313 * @buffer:     buffer
1314 * @len:        length of buffer provided
1315 *
1316 * Return value:
1317 *      pointer to buffer
1318 **/
1319static char *ipr_format_res_path(struct ipr_ioa_cfg *ioa_cfg,
1320                                 u8 *res_path, char *buffer, int len)
1321{
1322        char *p = buffer;
1323
1324        *p = '\0';
1325        p += scnprintf(p, buffer + len - p, "%d/", ioa_cfg->host->host_no);
1326        __ipr_format_res_path(res_path, p, len - (p - buffer));
1327        return buffer;
1328}
1329
1330/**
1331 * ipr_update_res_entry - Update the resource entry.
1332 * @res:        resource entry struct
1333 * @cfgtew:     config table entry wrapper struct
1334 *
1335 * Return value:
1336 *      none
1337 **/
1338static void ipr_update_res_entry(struct ipr_resource_entry *res,
1339                                 struct ipr_config_table_entry_wrapper *cfgtew)
1340{
1341        char buffer[IPR_MAX_RES_PATH_LENGTH];
1342        unsigned int proto;
1343        int new_path = 0;
1344
1345        if (res->ioa_cfg->sis64) {
1346                res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1347                res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1348                res->type = cfgtew->u.cfgte64->res_type;
1349
1350                memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1351                        sizeof(struct ipr_std_inq_data));
1352
1353                res->qmodel = IPR_QUEUEING_MODEL64(res);
1354                proto = cfgtew->u.cfgte64->proto;
1355                res->res_handle = cfgtew->u.cfgte64->res_handle;
1356                res->dev_id = cfgtew->u.cfgte64->dev_id;
1357
1358                memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1359                        sizeof(res->dev_lun.scsi_lun));
1360
1361                if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1362                                        sizeof(res->res_path))) {
1363                        memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1364                                sizeof(res->res_path));
1365                        new_path = 1;
1366                }
1367
1368                if (res->sdev && new_path)
1369                        sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1370                                    ipr_format_res_path(res->ioa_cfg,
1371                                        res->res_path, buffer, sizeof(buffer)));
1372        } else {
1373                res->flags = cfgtew->u.cfgte->flags;
1374                if (res->flags & IPR_IS_IOA_RESOURCE)
1375                        res->type = IPR_RES_TYPE_IOAFP;
1376                else
1377                        res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1378
1379                memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1380                        sizeof(struct ipr_std_inq_data));
1381
1382                res->qmodel = IPR_QUEUEING_MODEL(res);
1383                proto = cfgtew->u.cfgte->proto;
1384                res->res_handle = cfgtew->u.cfgte->res_handle;
1385        }
1386
1387        ipr_update_ata_class(res, proto);
1388}
1389
1390/**
1391 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1392 *                        for the resource.
1393 * @res:        resource entry struct
1394 *
1395 * Return value:
1396 *      none
1397 **/
1398static void ipr_clear_res_target(struct ipr_resource_entry *res)
1399{
1400        struct ipr_resource_entry *gscsi_res = NULL;
1401        struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1402
1403        if (!ioa_cfg->sis64)
1404                return;
1405
1406        if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1407                clear_bit(res->target, ioa_cfg->array_ids);
1408        else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1409                clear_bit(res->target, ioa_cfg->vset_ids);
1410        else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1411                list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1412                        if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1413                                return;
1414                clear_bit(res->target, ioa_cfg->target_ids);
1415
1416        } else if (res->bus == 0)
1417                clear_bit(res->target, ioa_cfg->target_ids);
1418}
1419
1420/**
1421 * ipr_handle_config_change - Handle a config change from the adapter
1422 * @ioa_cfg:    ioa config struct
1423 * @hostrcb:    hostrcb
1424 *
1425 * Return value:
1426 *      none
1427 **/
1428static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1429                                     struct ipr_hostrcb *hostrcb)
1430{
1431        struct ipr_resource_entry *res = NULL;
1432        struct ipr_config_table_entry_wrapper cfgtew;
1433        __be32 cc_res_handle;
1434
1435        u32 is_ndn = 1;
1436
1437        if (ioa_cfg->sis64) {
1438                cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1439                cc_res_handle = cfgtew.u.cfgte64->res_handle;
1440        } else {
1441                cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1442                cc_res_handle = cfgtew.u.cfgte->res_handle;
1443        }
1444
1445        list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1446                if (res->res_handle == cc_res_handle) {
1447                        is_ndn = 0;
1448                        break;
1449                }
1450        }
1451
1452        if (is_ndn) {
1453                if (list_empty(&ioa_cfg->free_res_q)) {
1454                        ipr_send_hcam(ioa_cfg,
1455                                      IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1456                                      hostrcb);
1457                        return;
1458                }
1459
1460                res = list_entry(ioa_cfg->free_res_q.next,
1461                                 struct ipr_resource_entry, queue);
1462
1463                list_del(&res->queue);
1464                ipr_init_res_entry(res, &cfgtew);
1465                list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1466        }
1467
1468        ipr_update_res_entry(res, &cfgtew);
1469
1470        if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1471                if (res->sdev) {
1472                        res->del_from_ml = 1;
1473                        res->res_handle = IPR_INVALID_RES_HANDLE;
1474                        schedule_work(&ioa_cfg->work_q);
1475                } else {
1476                        ipr_clear_res_target(res);
1477                        list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1478                }
1479        } else if (!res->sdev || res->del_from_ml) {
1480                res->add_to_ml = 1;
1481                schedule_work(&ioa_cfg->work_q);
1482        }
1483
1484        ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1485}
1486
1487/**
1488 * ipr_process_ccn - Op done function for a CCN.
1489 * @ipr_cmd:    ipr command struct
1490 *
1491 * This function is the op done function for a configuration
1492 * change notification host controlled async from the adapter.
1493 *
1494 * Return value:
1495 *      none
1496 **/
1497static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1498{
1499        struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1500        struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1501        u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1502
1503        list_del_init(&hostrcb->queue);
1504        list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
1505
1506        if (ioasc) {
1507                if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
1508                    ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST)
1509                        dev_err(&ioa_cfg->pdev->dev,
1510                                "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1511
1512                ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1513        } else {
1514                ipr_handle_config_change(ioa_cfg, hostrcb);
1515        }
1516}
1517
1518/**
1519 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1520 * @i:          index into buffer
1521 * @buf:                string to modify
1522 *
1523 * This function will strip all trailing whitespace, pad the end
1524 * of the string with a single space, and NULL terminate the string.
1525 *
1526 * Return value:
1527 *      new length of string
1528 **/
1529static int strip_and_pad_whitespace(int i, char *buf)
1530{
1531        while (i && buf[i] == ' ')
1532                i--;
1533        buf[i+1] = ' ';
1534        buf[i+2] = '\0';
1535        return i + 2;
1536}
1537
1538/**
1539 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1540 * @prefix:             string to print at start of printk
1541 * @hostrcb:    hostrcb pointer
1542 * @vpd:                vendor/product id/sn struct
1543 *
1544 * Return value:
1545 *      none
1546 **/
1547static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1548                                struct ipr_vpd *vpd)
1549{
1550        char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1551        int i = 0;
1552
1553        memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1554        i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1555
1556        memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1557        i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1558
1559        memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1560        buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1561
1562        ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1563}
1564
1565/**
1566 * ipr_log_vpd - Log the passed VPD to the error log.
1567 * @vpd:                vendor/product id/sn struct
1568 *
1569 * Return value:
1570 *      none
1571 **/
1572static void ipr_log_vpd(struct ipr_vpd *vpd)
1573{
1574        char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1575                    + IPR_SERIAL_NUM_LEN];
1576
1577        memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1578        memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1579               IPR_PROD_ID_LEN);
1580        buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1581        ipr_err("Vendor/Product ID: %s\n", buffer);
1582
1583        memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1584        buffer[IPR_SERIAL_NUM_LEN] = '\0';
1585        ipr_err("    Serial Number: %s\n", buffer);
1586}
1587
1588/**
1589 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1590 * @prefix:             string to print at start of printk
1591 * @hostrcb:    hostrcb pointer
1592 * @vpd:                vendor/product id/sn/wwn struct
1593 *
1594 * Return value:
1595 *      none
1596 **/
1597static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1598                                    struct ipr_ext_vpd *vpd)
1599{
1600        ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1601        ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1602                     be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1603}
1604
1605/**
1606 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1607 * @vpd:                vendor/product id/sn/wwn struct
1608 *
1609 * Return value:
1610 *      none
1611 **/
1612static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1613{
1614        ipr_log_vpd(&vpd->vpd);
1615        ipr_err("    WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1616                be32_to_cpu(vpd->wwid[1]));
1617}
1618
1619/**
1620 * ipr_log_enhanced_cache_error - Log a cache error.
1621 * @ioa_cfg:    ioa config struct
1622 * @hostrcb:    hostrcb struct
1623 *
1624 * Return value:
1625 *      none
1626 **/
1627static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1628                                         struct ipr_hostrcb *hostrcb)
1629{
1630        struct ipr_hostrcb_type_12_error *error;
1631
1632        if (ioa_cfg->sis64)
1633                error = &hostrcb->hcam.u.error64.u.type_12_error;
1634        else
1635                error = &hostrcb->hcam.u.error.u.type_12_error;
1636
1637        ipr_err("-----Current Configuration-----\n");
1638        ipr_err("Cache Directory Card Information:\n");
1639        ipr_log_ext_vpd(&error->ioa_vpd);
1640        ipr_err("Adapter Card Information:\n");
1641        ipr_log_ext_vpd(&error->cfc_vpd);
1642
1643        ipr_err("-----Expected Configuration-----\n");
1644        ipr_err("Cache Directory Card Information:\n");
1645        ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1646        ipr_err("Adapter Card Information:\n");
1647        ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1648
1649        ipr_err("Additional IOA Data: %08X %08X %08X\n",
1650                     be32_to_cpu(error->ioa_data[0]),
1651                     be32_to_cpu(error->ioa_data[1]),
1652                     be32_to_cpu(error->ioa_data[2]));
1653}
1654
1655/**
1656 * ipr_log_cache_error - Log a cache error.
1657 * @ioa_cfg:    ioa config struct
1658 * @hostrcb:    hostrcb struct
1659 *
1660 * Return value:
1661 *      none
1662 **/
1663static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1664                                struct ipr_hostrcb *hostrcb)
1665{
1666        struct ipr_hostrcb_type_02_error *error =
1667                &hostrcb->hcam.u.error.u.type_02_error;
1668
1669        ipr_err("-----Current Configuration-----\n");
1670        ipr_err("Cache Directory Card Information:\n");
1671        ipr_log_vpd(&error->ioa_vpd);
1672        ipr_err("Adapter Card Information:\n");
1673        ipr_log_vpd(&error->cfc_vpd);
1674
1675        ipr_err("-----Expected Configuration-----\n");
1676        ipr_err("Cache Directory Card Information:\n");
1677        ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1678        ipr_err("Adapter Card Information:\n");
1679        ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1680
1681        ipr_err("Additional IOA Data: %08X %08X %08X\n",
1682                     be32_to_cpu(error->ioa_data[0]),
1683                     be32_to_cpu(error->ioa_data[1]),
1684                     be32_to_cpu(error->ioa_data[2]));
1685}
1686
1687/**
1688 * ipr_log_enhanced_config_error - Log a configuration error.
1689 * @ioa_cfg:    ioa config struct
1690 * @hostrcb:    hostrcb struct
1691 *
1692 * Return value:
1693 *      none
1694 **/
1695static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1696                                          struct ipr_hostrcb *hostrcb)
1697{
1698        int errors_logged, i;
1699        struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1700        struct ipr_hostrcb_type_13_error *error;
1701
1702        error = &hostrcb->hcam.u.error.u.type_13_error;
1703        errors_logged = be32_to_cpu(error->errors_logged);
1704
1705        ipr_err("Device Errors Detected/Logged: %d/%d\n",
1706                be32_to_cpu(error->errors_detected), errors_logged);
1707
1708        dev_entry = error->dev;
1709
1710        for (i = 0; i < errors_logged; i++, dev_entry++) {
1711                ipr_err_separator;
1712
1713                ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1714                ipr_log_ext_vpd(&dev_entry->vpd);
1715
1716                ipr_err("-----New Device Information-----\n");
1717                ipr_log_ext_vpd(&dev_entry->new_vpd);
1718
1719                ipr_err("Cache Directory Card Information:\n");
1720                ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1721
1722                ipr_err("Adapter Card Information:\n");
1723                ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1724        }
1725}
1726
1727/**
1728 * ipr_log_sis64_config_error - Log a device error.
1729 * @ioa_cfg:    ioa config struct
1730 * @hostrcb:    hostrcb struct
1731 *
1732 * Return value:
1733 *      none
1734 **/
1735static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1736                                       struct ipr_hostrcb *hostrcb)
1737{
1738        int errors_logged, i;
1739        struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1740        struct ipr_hostrcb_type_23_error *error;
1741        char buffer[IPR_MAX_RES_PATH_LENGTH];
1742
1743        error = &hostrcb->hcam.u.error64.u.type_23_error;
1744        errors_logged = be32_to_cpu(error->errors_logged);
1745
1746        ipr_err("Device Errors Detected/Logged: %d/%d\n",
1747                be32_to_cpu(error->errors_detected), errors_logged);
1748
1749        dev_entry = error->dev;
1750
1751        for (i = 0; i < errors_logged; i++, dev_entry++) {
1752                ipr_err_separator;
1753
1754                ipr_err("Device %d : %s", i + 1,
1755                        __ipr_format_res_path(dev_entry->res_path,
1756                                              buffer, sizeof(buffer)));
1757                ipr_log_ext_vpd(&dev_entry->vpd);
1758
1759                ipr_err("-----New Device Information-----\n");
1760                ipr_log_ext_vpd(&dev_entry->new_vpd);
1761
1762                ipr_err("Cache Directory Card Information:\n");
1763                ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1764
1765                ipr_err("Adapter Card Information:\n");
1766                ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1767        }
1768}
1769
1770/**
1771 * ipr_log_config_error - Log a configuration error.
1772 * @ioa_cfg:    ioa config struct
1773 * @hostrcb:    hostrcb struct
1774 *
1775 * Return value:
1776 *      none
1777 **/
1778static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1779                                 struct ipr_hostrcb *hostrcb)
1780{
1781        int errors_logged, i;
1782        struct ipr_hostrcb_device_data_entry *dev_entry;
1783        struct ipr_hostrcb_type_03_error *error;
1784
1785        error = &hostrcb->hcam.u.error.u.type_03_error;
1786        errors_logged = be32_to_cpu(error->errors_logged);
1787
1788        ipr_err("Device Errors Detected/Logged: %d/%d\n",
1789                be32_to_cpu(error->errors_detected), errors_logged);
1790
1791        dev_entry = error->dev;
1792
1793        for (i = 0; i < errors_logged; i++, dev_entry++) {
1794                ipr_err_separator;
1795
1796                ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1797                ipr_log_vpd(&dev_entry->vpd);
1798
1799                ipr_err("-----New Device Information-----\n");
1800                ipr_log_vpd(&dev_entry->new_vpd);
1801
1802                ipr_err("Cache Directory Card Information:\n");
1803                ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1804
1805                ipr_err("Adapter Card Information:\n");
1806                ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1807
1808                ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1809                        be32_to_cpu(dev_entry->ioa_data[0]),
1810                        be32_to_cpu(dev_entry->ioa_data[1]),
1811                        be32_to_cpu(dev_entry->ioa_data[2]),
1812                        be32_to_cpu(dev_entry->ioa_data[3]),
1813                        be32_to_cpu(dev_entry->ioa_data[4]));
1814        }
1815}
1816
1817/**
1818 * ipr_log_enhanced_array_error - Log an array configuration error.
1819 * @ioa_cfg:    ioa config struct
1820 * @hostrcb:    hostrcb struct
1821 *
1822 * Return value:
1823 *      none
1824 **/
1825static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1826                                         struct ipr_hostrcb *hostrcb)
1827{
1828        int i, num_entries;
1829        struct ipr_hostrcb_type_14_error *error;
1830        struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1831        const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1832
1833        error = &hostrcb->hcam.u.error.u.type_14_error;
1834
1835        ipr_err_separator;
1836
1837        ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1838                error->protection_level,
1839                ioa_cfg->host->host_no,
1840                error->last_func_vset_res_addr.bus,
1841                error->last_func_vset_res_addr.target,
1842                error->last_func_vset_res_addr.lun);
1843
1844        ipr_err_separator;
1845
1846        array_entry = error->array_member;
1847        num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1848                            ARRAY_SIZE(error->array_member));
1849
1850        for (i = 0; i < num_entries; i++, array_entry++) {
1851                if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1852                        continue;
1853
1854                if (be32_to_cpu(error->exposed_mode_adn) == i)
1855                        ipr_err("Exposed Array Member %d:\n", i);
1856                else
1857                        ipr_err("Array Member %d:\n", i);
1858
1859                ipr_log_ext_vpd(&array_entry->vpd);
1860                ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1861                ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1862                                 "Expected Location");
1863
1864                ipr_err_separator;
1865        }
1866}
1867
1868/**
1869 * ipr_log_array_error - Log an array configuration error.
1870 * @ioa_cfg:    ioa config struct
1871 * @hostrcb:    hostrcb struct
1872 *
1873 * Return value:
1874 *      none
1875 **/
1876static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1877                                struct ipr_hostrcb *hostrcb)
1878{
1879        int i;
1880        struct ipr_hostrcb_type_04_error *error;
1881        struct ipr_hostrcb_array_data_entry *array_entry;
1882        const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1883
1884        error = &hostrcb->hcam.u.error.u.type_04_error;
1885
1886        ipr_err_separator;
1887
1888        ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1889                error->protection_level,
1890                ioa_cfg->host->host_no,
1891                error->last_func_vset_res_addr.bus,
1892                error->last_func_vset_res_addr.target,
1893                error->last_func_vset_res_addr.lun);
1894
1895        ipr_err_separator;
1896
1897        array_entry = error->array_member;
1898
1899        for (i = 0; i < 18; i++) {
1900                if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1901                        continue;
1902
1903                if (be32_to_cpu(error->exposed_mode_adn) == i)
1904                        ipr_err("Exposed Array Member %d:\n", i);
1905                else
1906                        ipr_err("Array Member %d:\n", i);
1907
1908                ipr_log_vpd(&array_entry->vpd);
1909
1910                ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1911                ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1912                                 "Expected Location");
1913
1914                ipr_err_separator;
1915
1916                if (i == 9)
1917                        array_entry = error->array_member2;
1918                else
1919                        array_entry++;
1920        }
1921}
1922
1923/**
1924 * ipr_log_hex_data - Log additional hex IOA error data.
1925 * @ioa_cfg:    ioa config struct
1926 * @data:               IOA error data
1927 * @len:                data length
1928 *
1929 * Return value:
1930 *      none
1931 **/
1932static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, __be32 *data, int len)
1933{
1934        int i;
1935
1936        if (len == 0)
1937                return;
1938
1939        if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1940                len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1941
1942        for (i = 0; i < len / 4; i += 4) {
1943                ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1944                        be32_to_cpu(data[i]),
1945                        be32_to_cpu(data[i+1]),
1946                        be32_to_cpu(data[i+2]),
1947                        be32_to_cpu(data[i+3]));
1948        }
1949}
1950
1951/**
1952 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1953 * @ioa_cfg:    ioa config struct
1954 * @hostrcb:    hostrcb struct
1955 *
1956 * Return value:
1957 *      none
1958 **/
1959static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1960                                            struct ipr_hostrcb *hostrcb)
1961{
1962        struct ipr_hostrcb_type_17_error *error;
1963
1964        if (ioa_cfg->sis64)
1965                error = &hostrcb->hcam.u.error64.u.type_17_error;
1966        else
1967                error = &hostrcb->hcam.u.error.u.type_17_error;
1968
1969        error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1970        strim(error->failure_reason);
1971
1972        ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1973                     be32_to_cpu(hostrcb->hcam.u.error.prc));
1974        ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1975        ipr_log_hex_data(ioa_cfg, error->data,
1976                         be32_to_cpu(hostrcb->hcam.length) -
1977                         (offsetof(struct ipr_hostrcb_error, u) +
1978                          offsetof(struct ipr_hostrcb_type_17_error, data)));
1979}
1980
1981/**
1982 * ipr_log_dual_ioa_error - Log a dual adapter error.
1983 * @ioa_cfg:    ioa config struct
1984 * @hostrcb:    hostrcb struct
1985 *
1986 * Return value:
1987 *      none
1988 **/
1989static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1990                                   struct ipr_hostrcb *hostrcb)
1991{
1992        struct ipr_hostrcb_type_07_error *error;
1993
1994        error = &hostrcb->hcam.u.error.u.type_07_error;
1995        error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1996        strim(error->failure_reason);
1997
1998        ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1999                     be32_to_cpu(hostrcb->hcam.u.error.prc));
2000        ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
2001        ipr_log_hex_data(ioa_cfg, error->data,
2002                         be32_to_cpu(hostrcb->hcam.length) -
2003                         (offsetof(struct ipr_hostrcb_error, u) +
2004                          offsetof(struct ipr_hostrcb_type_07_error, data)));
2005}
2006
2007static const struct {
2008        u8 active;
2009        char *desc;
2010} path_active_desc[] = {
2011        { IPR_PATH_NO_INFO, "Path" },
2012        { IPR_PATH_ACTIVE, "Active path" },
2013        { IPR_PATH_NOT_ACTIVE, "Inactive path" }
2014};
2015
2016static const struct {
2017        u8 state;
2018        char *desc;
2019} path_state_desc[] = {
2020        { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
2021        { IPR_PATH_HEALTHY, "is healthy" },
2022        { IPR_PATH_DEGRADED, "is degraded" },
2023        { IPR_PATH_FAILED, "is failed" }
2024};
2025
2026/**
2027 * ipr_log_fabric_path - Log a fabric path error
2028 * @hostrcb:    hostrcb struct
2029 * @fabric:             fabric descriptor
2030 *
2031 * Return value:
2032 *      none
2033 **/
2034static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
2035                                struct ipr_hostrcb_fabric_desc *fabric)
2036{
2037        int i, j;
2038        u8 path_state = fabric->path_state;
2039        u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2040        u8 state = path_state & IPR_PATH_STATE_MASK;
2041
2042        for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2043                if (path_active_desc[i].active != active)
2044                        continue;
2045
2046                for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2047                        if (path_state_desc[j].state != state)
2048                                continue;
2049
2050                        if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
2051                                ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
2052                                             path_active_desc[i].desc, path_state_desc[j].desc,
2053                                             fabric->ioa_port);
2054                        } else if (fabric->cascaded_expander == 0xff) {
2055                                ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
2056                                             path_active_desc[i].desc, path_state_desc[j].desc,
2057                                             fabric->ioa_port, fabric->phy);
2058                        } else if (fabric->phy == 0xff) {
2059                                ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
2060                                             path_active_desc[i].desc, path_state_desc[j].desc,
2061                                             fabric->ioa_port, fabric->cascaded_expander);
2062                        } else {
2063                                ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
2064                                             path_active_desc[i].desc, path_state_desc[j].desc,
2065                                             fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2066                        }
2067                        return;
2068                }
2069        }
2070
2071        ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
2072                fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2073}
2074
2075/**
2076 * ipr_log64_fabric_path - Log a fabric path error
2077 * @hostrcb:    hostrcb struct
2078 * @fabric:             fabric descriptor
2079 *
2080 * Return value:
2081 *      none
2082 **/
2083static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
2084                                  struct ipr_hostrcb64_fabric_desc *fabric)
2085{
2086        int i, j;
2087        u8 path_state = fabric->path_state;
2088        u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2089        u8 state = path_state & IPR_PATH_STATE_MASK;
2090        char buffer[IPR_MAX_RES_PATH_LENGTH];
2091
2092        for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2093                if (path_active_desc[i].active != active)
2094                        continue;
2095
2096                for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2097                        if (path_state_desc[j].state != state)
2098                                continue;
2099
2100                        ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
2101                                     path_active_desc[i].desc, path_state_desc[j].desc,
2102                                     ipr_format_res_path(hostrcb->ioa_cfg,
2103                                                fabric->res_path,
2104                                                buffer, sizeof(buffer)));
2105                        return;
2106                }
2107        }
2108
2109        ipr_err("Path state=%02X Resource Path=%s\n", path_state,
2110                ipr_format_res_path(hostrcb->ioa_cfg, fabric->res_path,
2111                                    buffer, sizeof(buffer)));
2112}
2113
2114static const struct {
2115        u8 type;
2116        char *desc;
2117} path_type_desc[] = {
2118        { IPR_PATH_CFG_IOA_PORT, "IOA port" },
2119        { IPR_PATH_CFG_EXP_PORT, "Expander port" },
2120        { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
2121        { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
2122};
2123
2124static const struct {
2125        u8 status;
2126        char *desc;
2127} path_status_desc[] = {
2128        { IPR_PATH_CFG_NO_PROB, "Functional" },
2129        { IPR_PATH_CFG_DEGRADED, "Degraded" },
2130        { IPR_PATH_CFG_FAILED, "Failed" },
2131        { IPR_PATH_CFG_SUSPECT, "Suspect" },
2132        { IPR_PATH_NOT_DETECTED, "Missing" },
2133        { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
2134};
2135
2136static const char *link_rate[] = {
2137        "unknown",
2138        "disabled",
2139        "phy reset problem",
2140        "spinup hold",
2141        "port selector",
2142        "unknown",
2143        "unknown",
2144        "unknown",
2145        "1.5Gbps",
2146        "3.0Gbps",
2147        "unknown",
2148        "unknown",
2149        "unknown",
2150        "unknown",
2151        "unknown",
2152        "unknown"
2153};
2154
2155/**
2156 * ipr_log_path_elem - Log a fabric path element.
2157 * @hostrcb:    hostrcb struct
2158 * @cfg:                fabric path element struct
2159 *
2160 * Return value:
2161 *      none
2162 **/
2163static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
2164                              struct ipr_hostrcb_config_element *cfg)
2165{
2166        int i, j;
2167        u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2168        u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2169
2170        if (type == IPR_PATH_CFG_NOT_EXIST)
2171                return;
2172
2173        for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2174                if (path_type_desc[i].type != type)
2175                        continue;
2176
2177                for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2178                        if (path_status_desc[j].status != status)
2179                                continue;
2180
2181                        if (type == IPR_PATH_CFG_IOA_PORT) {
2182                                ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2183                                             path_status_desc[j].desc, path_type_desc[i].desc,
2184                                             cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2185                                             be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2186                        } else {
2187                                if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2188                                        ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2189                                                     path_status_desc[j].desc, path_type_desc[i].desc,
2190                                                     link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2191                                                     be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2192                                } else if (cfg->cascaded_expander == 0xff) {
2193                                        ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2194                                                     "WWN=%08X%08X\n", path_status_desc[j].desc,
2195                                                     path_type_desc[i].desc, cfg->phy,
2196                                                     link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2197                                                     be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2198                                } else if (cfg->phy == 0xff) {
2199                                        ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2200                                                     "WWN=%08X%08X\n", path_status_desc[j].desc,
2201                                                     path_type_desc[i].desc, cfg->cascaded_expander,
2202                                                     link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2203                                                     be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2204                                } else {
2205                                        ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2206                                                     "WWN=%08X%08X\n", path_status_desc[j].desc,
2207                                                     path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2208                                                     link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2209                                                     be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2210                                }
2211                        }
2212                        return;
2213                }
2214        }
2215
2216        ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2217                     "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2218                     link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2219                     be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2220}
2221
2222/**
2223 * ipr_log64_path_elem - Log a fabric path element.
2224 * @hostrcb:    hostrcb struct
2225 * @cfg:                fabric path element struct
2226 *
2227 * Return value:
2228 *      none
2229 **/
2230static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2231                                struct ipr_hostrcb64_config_element *cfg)
2232{
2233        int i, j;
2234        u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2235        u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2236        u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2237        char buffer[IPR_MAX_RES_PATH_LENGTH];
2238
2239        if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2240                return;
2241
2242        for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2243                if (path_type_desc[i].type != type)
2244                        continue;
2245
2246                for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2247                        if (path_status_desc[j].status != status)
2248                                continue;
2249
2250                        ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2251                                     path_status_desc[j].desc, path_type_desc[i].desc,
2252                                     ipr_format_res_path(hostrcb->ioa_cfg,
2253                                        cfg->res_path, buffer, sizeof(buffer)),
2254                                        link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2255                                        be32_to_cpu(cfg->wwid[0]),
2256                                        be32_to_cpu(cfg->wwid[1]));
2257                        return;
2258                }
2259        }
2260        ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2261                     "WWN=%08X%08X\n", cfg->type_status,
2262                     ipr_format_res_path(hostrcb->ioa_cfg,
2263                        cfg->res_path, buffer, sizeof(buffer)),
2264                        link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2265                        be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2266}
2267
2268/**
2269 * ipr_log_fabric_error - Log a fabric error.
2270 * @ioa_cfg:    ioa config struct
2271 * @hostrcb:    hostrcb struct
2272 *
2273 * Return value:
2274 *      none
2275 **/
2276static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2277                                 struct ipr_hostrcb *hostrcb)
2278{
2279        struct ipr_hostrcb_type_20_error *error;
2280        struct ipr_hostrcb_fabric_desc *fabric;
2281        struct ipr_hostrcb_config_element *cfg;
2282        int i, add_len;
2283
2284        error = &hostrcb->hcam.u.error.u.type_20_error;
2285        error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2286        ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2287
2288        add_len = be32_to_cpu(hostrcb->hcam.length) -
2289                (offsetof(struct ipr_hostrcb_error, u) +
2290                 offsetof(struct ipr_hostrcb_type_20_error, desc));
2291
2292        for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2293                ipr_log_fabric_path(hostrcb, fabric);
2294                for_each_fabric_cfg(fabric, cfg)
2295                        ipr_log_path_elem(hostrcb, cfg);
2296
2297                add_len -= be16_to_cpu(fabric->length);
2298                fabric = (struct ipr_hostrcb_fabric_desc *)
2299                        ((unsigned long)fabric + be16_to_cpu(fabric->length));
2300        }
2301
2302        ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2303}
2304
2305/**
2306 * ipr_log_sis64_array_error - Log a sis64 array error.
2307 * @ioa_cfg:    ioa config struct
2308 * @hostrcb:    hostrcb struct
2309 *
2310 * Return value:
2311 *      none
2312 **/
2313static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2314                                      struct ipr_hostrcb *hostrcb)
2315{
2316        int i, num_entries;
2317        struct ipr_hostrcb_type_24_error *error;
2318        struct ipr_hostrcb64_array_data_entry *array_entry;
2319        char buffer[IPR_MAX_RES_PATH_LENGTH];
2320        const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2321
2322        error = &hostrcb->hcam.u.error64.u.type_24_error;
2323
2324        ipr_err_separator;
2325
2326        ipr_err("RAID %s Array Configuration: %s\n",
2327                error->protection_level,
2328                ipr_format_res_path(ioa_cfg, error->last_res_path,
2329                        buffer, sizeof(buffer)));
2330
2331        ipr_err_separator;
2332
2333        array_entry = error->array_member;
2334        num_entries = min_t(u32, error->num_entries,
2335                            ARRAY_SIZE(error->array_member));
2336
2337        for (i = 0; i < num_entries; i++, array_entry++) {
2338
2339                if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2340                        continue;
2341
2342                if (error->exposed_mode_adn == i)
2343                        ipr_err("Exposed Array Member %d:\n", i);
2344                else
2345                        ipr_err("Array Member %d:\n", i);
2346
2347                ipr_err("Array Member %d:\n", i);
2348                ipr_log_ext_vpd(&array_entry->vpd);
2349                ipr_err("Current Location: %s\n",
2350                         ipr_format_res_path(ioa_cfg, array_entry->res_path,
2351                                buffer, sizeof(buffer)));
2352                ipr_err("Expected Location: %s\n",
2353                         ipr_format_res_path(ioa_cfg,
2354                                array_entry->expected_res_path,
2355                                buffer, sizeof(buffer)));
2356
2357                ipr_err_separator;
2358        }
2359}
2360
2361/**
2362 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2363 * @ioa_cfg:    ioa config struct
2364 * @hostrcb:    hostrcb struct
2365 *
2366 * Return value:
2367 *      none
2368 **/
2369static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2370                                       struct ipr_hostrcb *hostrcb)
2371{
2372        struct ipr_hostrcb_type_30_error *error;
2373        struct ipr_hostrcb64_fabric_desc *fabric;
2374        struct ipr_hostrcb64_config_element *cfg;
2375        int i, add_len;
2376
2377        error = &hostrcb->hcam.u.error64.u.type_30_error;
2378
2379        error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2380        ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2381
2382        add_len = be32_to_cpu(hostrcb->hcam.length) -
2383                (offsetof(struct ipr_hostrcb64_error, u) +
2384                 offsetof(struct ipr_hostrcb_type_30_error, desc));
2385
2386        for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2387                ipr_log64_fabric_path(hostrcb, fabric);
2388                for_each_fabric_cfg(fabric, cfg)
2389                        ipr_log64_path_elem(hostrcb, cfg);
2390
2391                add_len -= be16_to_cpu(fabric->length);
2392                fabric = (struct ipr_hostrcb64_fabric_desc *)
2393                        ((unsigned long)fabric + be16_to_cpu(fabric->length));
2394        }
2395
2396        ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2397}
2398
2399/**
2400 * ipr_log_sis64_service_required_error - Log a sis64 service required error.
2401 * @ioa_cfg:    ioa config struct
2402 * @hostrcb:    hostrcb struct
2403 *
2404 * Return value:
2405 *      none
2406 **/
2407static void ipr_log_sis64_service_required_error(struct ipr_ioa_cfg *ioa_cfg,
2408                                       struct ipr_hostrcb *hostrcb)
2409{
2410        struct ipr_hostrcb_type_41_error *error;
2411
2412        error = &hostrcb->hcam.u.error64.u.type_41_error;
2413
2414        error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2415        ipr_err("Primary Failure Reason: %s\n", error->failure_reason);
2416        ipr_log_hex_data(ioa_cfg, error->data,
2417                         be32_to_cpu(hostrcb->hcam.length) -
2418                         (offsetof(struct ipr_hostrcb_error, u) +
2419                          offsetof(struct ipr_hostrcb_type_41_error, data)));
2420}
2421/**
2422 * ipr_log_generic_error - Log an adapter error.
2423 * @ioa_cfg:    ioa config struct
2424 * @hostrcb:    hostrcb struct
2425 *
2426 * Return value:
2427 *      none
2428 **/
2429static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2430                                  struct ipr_hostrcb *hostrcb)
2431{
2432        ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2433                         be32_to_cpu(hostrcb->hcam.length));
2434}
2435
2436/**
2437 * ipr_log_sis64_device_error - Log a cache error.
2438 * @ioa_cfg:    ioa config struct
2439 * @hostrcb:    hostrcb struct
2440 *
2441 * Return value:
2442 *      none
2443 **/
2444static void ipr_log_sis64_device_error(struct ipr_ioa_cfg *ioa_cfg,
2445                                         struct ipr_hostrcb *hostrcb)
2446{
2447        struct ipr_hostrcb_type_21_error *error;
2448        char buffer[IPR_MAX_RES_PATH_LENGTH];
2449
2450        error = &hostrcb->hcam.u.error64.u.type_21_error;
2451
2452        ipr_err("-----Failing Device Information-----\n");
2453        ipr_err("World Wide Unique ID: %08X%08X%08X%08X\n",
2454                be32_to_cpu(error->wwn[0]), be32_to_cpu(error->wwn[1]),
2455                 be32_to_cpu(error->wwn[2]), be32_to_cpu(error->wwn[3]));
2456        ipr_err("Device Resource Path: %s\n",
2457                __ipr_format_res_path(error->res_path,
2458                                      buffer, sizeof(buffer)));
2459        error->primary_problem_desc[sizeof(error->primary_problem_desc) - 1] = '\0';
2460        error->second_problem_desc[sizeof(error->second_problem_desc) - 1] = '\0';
2461        ipr_err("Primary Problem Description: %s\n", error->primary_problem_desc);
2462        ipr_err("Secondary Problem Description:  %s\n", error->second_problem_desc);
2463        ipr_err("SCSI Sense Data:\n");
2464        ipr_log_hex_data(ioa_cfg, error->sense_data, sizeof(error->sense_data));
2465        ipr_err("SCSI Command Descriptor Block: \n");
2466        ipr_log_hex_data(ioa_cfg, error->cdb, sizeof(error->cdb));
2467
2468        ipr_err("Additional IOA Data:\n");
2469        ipr_log_hex_data(ioa_cfg, error->ioa_data, be32_to_cpu(error->length_of_error));
2470}
2471
2472/**
2473 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2474 * @ioasc:      IOASC
2475 *
2476 * This function will return the index of into the ipr_error_table
2477 * for the specified IOASC. If the IOASC is not in the table,
2478 * 0 will be returned, which points to the entry used for unknown errors.
2479 *
2480 * Return value:
2481 *      index into the ipr_error_table
2482 **/
2483static u32 ipr_get_error(u32 ioasc)
2484{
2485        int i;
2486
2487        for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2488                if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2489                        return i;
2490
2491        return 0;
2492}
2493
2494/**
2495 * ipr_handle_log_data - Log an adapter error.
2496 * @ioa_cfg:    ioa config struct
2497 * @hostrcb:    hostrcb struct
2498 *
2499 * This function logs an adapter error to the system.
2500 *
2501 * Return value:
2502 *      none
2503 **/
2504static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2505                                struct ipr_hostrcb *hostrcb)
2506{
2507        u32 ioasc;
2508        int error_index;
2509        struct ipr_hostrcb_type_21_error *error;
2510
2511        if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2512                return;
2513
2514        if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2515                dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2516
2517        if (ioa_cfg->sis64)
2518                ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2519        else
2520                ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2521
2522        if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2523            ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2524                /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2525                scsi_report_bus_reset(ioa_cfg->host,
2526                                      hostrcb->hcam.u.error.fd_res_addr.bus);
2527        }
2528
2529        error_index = ipr_get_error(ioasc);
2530
2531        if (!ipr_error_table[error_index].log_hcam)
2532                return;
2533
2534        if (ioasc == IPR_IOASC_HW_CMD_FAILED &&
2535            hostrcb->hcam.overlay_id == IPR_HOST_RCB_OVERLAY_ID_21) {
2536                error = &hostrcb->hcam.u.error64.u.type_21_error;
2537
2538                if (((be32_to_cpu(error->sense_data[0]) & 0x0000ff00) >> 8) == ILLEGAL_REQUEST &&
2539                        ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
2540                                return;
2541        }
2542
2543        ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2544
2545        /* Set indication we have logged an error */
2546        ioa_cfg->errors_logged++;
2547
2548        if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2549                return;
2550        if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2551                hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2552
2553        switch (hostrcb->hcam.overlay_id) {
2554        case IPR_HOST_RCB_OVERLAY_ID_2:
2555                ipr_log_cache_error(ioa_cfg, hostrcb);
2556                break;
2557        case IPR_HOST_RCB_OVERLAY_ID_3:
2558                ipr_log_config_error(ioa_cfg, hostrcb);
2559                break;
2560        case IPR_HOST_RCB_OVERLAY_ID_4:
2561        case IPR_HOST_RCB_OVERLAY_ID_6:
2562                ipr_log_array_error(ioa_cfg, hostrcb);
2563                break;
2564        case IPR_HOST_RCB_OVERLAY_ID_7:
2565                ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2566                break;
2567        case IPR_HOST_RCB_OVERLAY_ID_12:
2568                ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2569                break;
2570        case IPR_HOST_RCB_OVERLAY_ID_13:
2571                ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2572                break;
2573        case IPR_HOST_RCB_OVERLAY_ID_14:
2574        case IPR_HOST_RCB_OVERLAY_ID_16:
2575                ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2576                break;
2577        case IPR_HOST_RCB_OVERLAY_ID_17:
2578                ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2579                break;
2580        case IPR_HOST_RCB_OVERLAY_ID_20:
2581                ipr_log_fabric_error(ioa_cfg, hostrcb);
2582                break;
2583        case IPR_HOST_RCB_OVERLAY_ID_21:
2584                ipr_log_sis64_device_error(ioa_cfg, hostrcb);
2585                break;
2586        case IPR_HOST_RCB_OVERLAY_ID_23:
2587                ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2588                break;
2589        case IPR_HOST_RCB_OVERLAY_ID_24:
2590        case IPR_HOST_RCB_OVERLAY_ID_26:
2591                ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2592                break;
2593        case IPR_HOST_RCB_OVERLAY_ID_30:
2594                ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2595                break;
2596        case IPR_HOST_RCB_OVERLAY_ID_41:
2597                ipr_log_sis64_service_required_error(ioa_cfg, hostrcb);
2598                break;
2599        case IPR_HOST_RCB_OVERLAY_ID_1:
2600        case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2601        default:
2602                ipr_log_generic_error(ioa_cfg, hostrcb);
2603                break;
2604        }
2605}
2606
2607static struct ipr_hostrcb *ipr_get_free_hostrcb(struct ipr_ioa_cfg *ioa)
2608{
2609        struct ipr_hostrcb *hostrcb;
2610
2611        hostrcb = list_first_entry_or_null(&ioa->hostrcb_free_q,
2612                                        struct ipr_hostrcb, queue);
2613
2614        if (unlikely(!hostrcb)) {
2615                dev_info(&ioa->pdev->dev, "Reclaiming async error buffers.");
2616                hostrcb = list_first_entry_or_null(&ioa->hostrcb_report_q,
2617                                                struct ipr_hostrcb, queue);
2618        }
2619
2620        list_del_init(&hostrcb->queue);
2621        return hostrcb;
2622}
2623
2624/**
2625 * ipr_process_error - Op done function for an adapter error log.
2626 * @ipr_cmd:    ipr command struct
2627 *
2628 * This function is the op done function for an error log host
2629 * controlled async from the adapter. It will log the error and
2630 * send the HCAM back to the adapter.
2631 *
2632 * Return value:
2633 *      none
2634 **/
2635static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2636{
2637        struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2638        struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2639        u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2640        u32 fd_ioasc;
2641
2642        if (ioa_cfg->sis64)
2643                fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2644        else
2645                fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2646
2647        list_del_init(&hostrcb->queue);
2648        list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
2649
2650        if (!ioasc) {
2651                ipr_handle_log_data(ioa_cfg, hostrcb);
2652                if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2653                        ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2654        } else if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
2655                   ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) {
2656                dev_err(&ioa_cfg->pdev->dev,
2657                        "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2658        }
2659
2660        list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_report_q);
2661        schedule_work(&ioa_cfg->work_q);
2662        hostrcb = ipr_get_free_hostrcb(ioa_cfg);
2663
2664        ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2665}
2666
2667/**
2668 * ipr_timeout -  An internally generated op has timed out.
2669 * @t: Timer context used to fetch ipr command struct
2670 *
2671 * This function blocks host requests and initiates an
2672 * adapter reset.
2673 *
2674 * Return value:
2675 *      none
2676 **/
2677static void ipr_timeout(struct timer_list *t)
2678{
2679        struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
2680        unsigned long lock_flags = 0;
2681        struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2682
2683        ENTER;
2684        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2685
2686        ioa_cfg->errors_logged++;
2687        dev_err(&ioa_cfg->pdev->dev,
2688                "Adapter being reset due to command timeout.\n");
2689
2690        if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2691                ioa_cfg->sdt_state = GET_DUMP;
2692
2693        if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2694                ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2695
2696        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2697        LEAVE;
2698}
2699
2700/**
2701 * ipr_oper_timeout -  Adapter timed out transitioning to operational
2702 * @t: Timer context used to fetch ipr command struct
2703 *
2704 * This function blocks host requests and initiates an
2705 * adapter reset.
2706 *
2707 * Return value:
2708 *      none
2709 **/
2710static void ipr_oper_timeout(struct timer_list *t)
2711{
2712        struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
2713        unsigned long lock_flags = 0;
2714        struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2715
2716        ENTER;
2717        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2718
2719        ioa_cfg->errors_logged++;
2720        dev_err(&ioa_cfg->pdev->dev,
2721                "Adapter timed out transitioning to operational.\n");
2722
2723        if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2724                ioa_cfg->sdt_state = GET_DUMP;
2725
2726        if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2727                if (ipr_fastfail)
2728                        ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2729                ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2730        }
2731
2732        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2733        LEAVE;
2734}
2735
2736/**
2737 * ipr_find_ses_entry - Find matching SES in SES table
2738 * @res:        resource entry struct of SES
2739 *
2740 * Return value:
2741 *      pointer to SES table entry / NULL on failure
2742 **/
2743static const struct ipr_ses_table_entry *
2744ipr_find_ses_entry(struct ipr_resource_entry *res)
2745{
2746        int i, j, matches;
2747        struct ipr_std_inq_vpids *vpids;
2748        const struct ipr_ses_table_entry *ste = ipr_ses_table;
2749
2750        for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2751                for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2752                        if (ste->compare_product_id_byte[j] == 'X') {
2753                                vpids = &res->std_inq_data.vpids;
2754                                if (vpids->product_id[j] == ste->product_id[j])
2755                                        matches++;
2756                                else
2757                                        break;
2758                        } else
2759                                matches++;
2760                }
2761
2762                if (matches == IPR_PROD_ID_LEN)
2763                        return ste;
2764        }
2765
2766        return NULL;
2767}
2768
2769/**
2770 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2771 * @ioa_cfg:    ioa config struct
2772 * @bus:                SCSI bus
2773 * @bus_width:  bus width
2774 *
2775 * Return value:
2776 *      SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2777 *      For a 2-byte wide SCSI bus, the maximum transfer speed is
2778 *      twice the maximum transfer rate (e.g. for a wide enabled bus,
2779 *      max 160MHz = max 320MB/sec).
2780 **/
2781static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2782{
2783        struct ipr_resource_entry *res;
2784        const struct ipr_ses_table_entry *ste;
2785        u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2786
2787        /* Loop through each config table entry in the config table buffer */
2788        list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2789                if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2790                        continue;
2791
2792                if (bus != res->bus)
2793                        continue;
2794
2795                if (!(ste = ipr_find_ses_entry(res)))
2796                        continue;
2797
2798                max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2799        }
2800
2801        return max_xfer_rate;
2802}
2803
2804/**
2805 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2806 * @ioa_cfg:            ioa config struct
2807 * @max_delay:          max delay in micro-seconds to wait
2808 *
2809 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2810 *
2811 * Return value:
2812 *      0 on success / other on failure
2813 **/
2814static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2815{
2816        volatile u32 pcii_reg;
2817        int delay = 1;
2818
2819        /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2820        while (delay < max_delay) {
2821                pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2822
2823                if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2824                        return 0;
2825
2826                /* udelay cannot be used if delay is more than a few milliseconds */
2827                if ((delay / 1000) > MAX_UDELAY_MS)
2828                        mdelay(delay / 1000);
2829                else
2830                        udelay(delay);
2831
2832                delay += delay;
2833        }
2834        return -EIO;
2835}
2836
2837/**
2838 * ipr_get_sis64_dump_data_section - Dump IOA memory
2839 * @ioa_cfg:                    ioa config struct
2840 * @start_addr:                 adapter address to dump
2841 * @dest:                       destination kernel buffer
2842 * @length_in_words:            length to dump in 4 byte words
2843 *
2844 * Return value:
2845 *      0 on success
2846 **/
2847static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2848                                           u32 start_addr,
2849                                           __be32 *dest, u32 length_in_words)
2850{
2851        int i;
2852
2853        for (i = 0; i < length_in_words; i++) {
2854                writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2855                *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2856                dest++;
2857        }
2858
2859        return 0;
2860}
2861
2862/**
2863 * ipr_get_ldump_data_section - Dump IOA memory
2864 * @ioa_cfg:                    ioa config struct
2865 * @start_addr:                 adapter address to dump
2866 * @dest:                               destination kernel buffer
2867 * @length_in_words:    length to dump in 4 byte words
2868 *
2869 * Return value:
2870 *      0 on success / -EIO on failure
2871 **/
2872static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2873                                      u32 start_addr,
2874                                      __be32 *dest, u32 length_in_words)
2875{
2876        volatile u32 temp_pcii_reg;
2877        int i, delay = 0;
2878
2879        if (ioa_cfg->sis64)
2880                return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2881                                                       dest, length_in_words);
2882
2883        /* Write IOA interrupt reg starting LDUMP state  */
2884        writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2885               ioa_cfg->regs.set_uproc_interrupt_reg32);
2886
2887        /* Wait for IO debug acknowledge */
2888        if (ipr_wait_iodbg_ack(ioa_cfg,
2889                               IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2890                dev_err(&ioa_cfg->pdev->dev,
2891                        "IOA dump long data transfer timeout\n");
2892                return -EIO;
2893        }
2894
2895        /* Signal LDUMP interlocked - clear IO debug ack */
2896        writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2897               ioa_cfg->regs.clr_interrupt_reg);
2898
2899        /* Write Mailbox with starting address */
2900        writel(start_addr, ioa_cfg->ioa_mailbox);
2901
2902        /* Signal address valid - clear IOA Reset alert */
2903        writel(IPR_UPROCI_RESET_ALERT,
2904               ioa_cfg->regs.clr_uproc_interrupt_reg32);
2905
2906        for (i = 0; i < length_in_words; i++) {
2907                /* Wait for IO debug acknowledge */
2908                if (ipr_wait_iodbg_ack(ioa_cfg,
2909                                       IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2910                        dev_err(&ioa_cfg->pdev->dev,
2911                                "IOA dump short data transfer timeout\n");
2912                        return -EIO;
2913                }
2914
2915                /* Read data from mailbox and increment destination pointer */
2916                *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2917                dest++;
2918
2919                /* For all but the last word of data, signal data received */
2920                if (i < (length_in_words - 1)) {
2921                        /* Signal dump data received - Clear IO debug Ack */
2922                        writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2923                               ioa_cfg->regs.clr_interrupt_reg);
2924                }
2925        }
2926
2927        /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2928        writel(IPR_UPROCI_RESET_ALERT,
2929               ioa_cfg->regs.set_uproc_interrupt_reg32);
2930
2931        writel(IPR_UPROCI_IO_DEBUG_ALERT,
2932               ioa_cfg->regs.clr_uproc_interrupt_reg32);
2933
2934        /* Signal dump data received - Clear IO debug Ack */
2935        writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2936               ioa_cfg->regs.clr_interrupt_reg);
2937
2938        /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2939        while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2940                temp_pcii_reg =
2941                    readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2942
2943                if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2944                        return 0;
2945
2946                udelay(10);
2947                delay += 10;
2948        }
2949
2950        return 0;
2951}
2952
2953#ifdef CONFIG_SCSI_IPR_DUMP
2954/**
2955 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2956 * @ioa_cfg:            ioa config struct
2957 * @pci_address:        adapter address
2958 * @length:                     length of data to copy
2959 *
2960 * Copy data from PCI adapter to kernel buffer.
2961 * Note: length MUST be a 4 byte multiple
2962 * Return value:
2963 *      0 on success / other on failure
2964 **/
2965static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2966                        unsigned long pci_address, u32 length)
2967{
2968        int bytes_copied = 0;
2969        int cur_len, rc, rem_len, rem_page_len, max_dump_size;
2970        __be32 *page;
2971        unsigned long lock_flags = 0;
2972        struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2973
2974        if (ioa_cfg->sis64)
2975                max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2976        else
2977                max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2978
2979        while (bytes_copied < length &&
2980               (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
2981                if (ioa_dump->page_offset >= PAGE_SIZE ||
2982                    ioa_dump->page_offset == 0) {
2983                        page = (__be32 *)__get_free_page(GFP_ATOMIC);
2984
2985                        if (!page) {
2986                                ipr_trace;
2987                                return bytes_copied;
2988                        }
2989
2990                        ioa_dump->page_offset = 0;
2991                        ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2992                        ioa_dump->next_page_index++;
2993                } else
2994                        page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2995
2996                rem_len = length - bytes_copied;
2997                rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2998                cur_len = min(rem_len, rem_page_len);
2999
3000                spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3001                if (ioa_cfg->sdt_state == ABORT_DUMP) {
3002                        rc = -EIO;
3003                } else {
3004                        rc = ipr_get_ldump_data_section(ioa_cfg,
3005                                                        pci_address + bytes_copied,
3006                                                        &page[ioa_dump->page_offset / 4],
3007                                                        (cur_len / sizeof(u32)));
3008                }
3009                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3010
3011                if (!rc) {
3012                        ioa_dump->page_offset += cur_len;
3013                        bytes_copied += cur_len;
3014                } else {
3015                        ipr_trace;
3016                        break;
3017                }
3018                schedule();
3019        }
3020
3021        return bytes_copied;
3022}
3023
3024/**
3025 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
3026 * @hdr:        dump entry header struct
3027 *
3028 * Return value:
3029 *      nothing
3030 **/
3031static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
3032{
3033        hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
3034        hdr->num_elems = 1;
3035        hdr->offset = sizeof(*hdr);
3036        hdr->status = IPR_DUMP_STATUS_SUCCESS;
3037}
3038
3039/**
3040 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
3041 * @ioa_cfg:    ioa config struct
3042 * @driver_dump:        driver dump struct
3043 *
3044 * Return value:
3045 *      nothing
3046 **/
3047static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
3048                                   struct ipr_driver_dump *driver_dump)
3049{
3050        struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3051
3052        ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
3053        driver_dump->ioa_type_entry.hdr.len =
3054                sizeof(struct ipr_dump_ioa_type_entry) -
3055                sizeof(struct ipr_dump_entry_header);
3056        driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3057        driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
3058        driver_dump->ioa_type_entry.type = ioa_cfg->type;
3059        driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
3060                (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
3061                ucode_vpd->minor_release[1];
3062        driver_dump->hdr.num_entries++;
3063}
3064
3065/**
3066 * ipr_dump_version_data - Fill in the driver version in the dump.
3067 * @ioa_cfg:    ioa config struct
3068 * @driver_dump:        driver dump struct
3069 *
3070 * Return value:
3071 *      nothing
3072 **/
3073static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
3074                                  struct ipr_driver_dump *driver_dump)
3075{
3076        ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
3077        driver_dump->version_entry.hdr.len =
3078                sizeof(struct ipr_dump_version_entry) -
3079                sizeof(struct ipr_dump_entry_header);
3080        driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3081        driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
3082        strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
3083        driver_dump->hdr.num_entries++;
3084}
3085
3086/**
3087 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
3088 * @ioa_cfg:    ioa config struct
3089 * @driver_dump:        driver dump struct
3090 *
3091 * Return value:
3092 *      nothing
3093 **/
3094static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
3095                                   struct ipr_driver_dump *driver_dump)
3096{
3097        ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
3098        driver_dump->trace_entry.hdr.len =
3099                sizeof(struct ipr_dump_trace_entry) -
3100                sizeof(struct ipr_dump_entry_header);
3101        driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3102        driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
3103        memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
3104        driver_dump->hdr.num_entries++;
3105}
3106
3107/**
3108 * ipr_dump_location_data - Fill in the IOA location in the dump.
3109 * @ioa_cfg:    ioa config struct
3110 * @driver_dump:        driver dump struct
3111 *
3112 * Return value:
3113 *      nothing
3114 **/
3115static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
3116                                   struct ipr_driver_dump *driver_dump)
3117{
3118        ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
3119        driver_dump->location_entry.hdr.len =
3120                sizeof(struct ipr_dump_location_entry) -
3121                sizeof(struct ipr_dump_entry_header);
3122        driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3123        driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
3124        strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
3125        driver_dump->hdr.num_entries++;
3126}
3127
3128/**
3129 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
3130 * @ioa_cfg:    ioa config struct
3131 * @dump:               dump struct
3132 *
3133 * Return value:
3134 *      nothing
3135 **/
3136static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
3137{
3138        unsigned long start_addr, sdt_word;
3139        unsigned long lock_flags = 0;
3140        struct ipr_driver_dump *driver_dump = &dump->driver_dump;
3141        struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
3142        u32 num_entries, max_num_entries, start_off, end_off;
3143        u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
3144        struct ipr_sdt *sdt;
3145        int valid = 1;
3146        int i;
3147
3148        ENTER;
3149
3150        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3151
3152        if (ioa_cfg->sdt_state != READ_DUMP) {
3153                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3154                return;
3155        }
3156
3157        if (ioa_cfg->sis64) {
3158                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3159                ssleep(IPR_DUMP_DELAY_SECONDS);
3160                spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3161        }
3162
3163        start_addr = readl(ioa_cfg->ioa_mailbox);
3164
3165        if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
3166                dev_err(&ioa_cfg->pdev->dev,
3167                        "Invalid dump table format: %lx\n", start_addr);
3168                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3169                return;
3170        }
3171
3172        dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
3173
3174        driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
3175
3176        /* Initialize the overall dump header */
3177        driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
3178        driver_dump->hdr.num_entries = 1;
3179        driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
3180        driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
3181        driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
3182        driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
3183
3184        ipr_dump_version_data(ioa_cfg, driver_dump);
3185        ipr_dump_location_data(ioa_cfg, driver_dump);
3186        ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
3187        ipr_dump_trace_data(ioa_cfg, driver_dump);
3188
3189        /* Update dump_header */
3190        driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
3191
3192        /* IOA Dump entry */
3193        ipr_init_dump_entry_hdr(&ioa_dump->hdr);
3194        ioa_dump->hdr.len = 0;
3195        ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3196        ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
3197
3198        /* First entries in sdt are actually a list of dump addresses and
3199         lengths to gather the real dump data.  sdt represents the pointer
3200         to the ioa generated dump table.  Dump data will be extracted based
3201         on entries in this table */
3202        sdt = &ioa_dump->sdt;
3203
3204        if (ioa_cfg->sis64) {
3205                max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
3206                max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
3207        } else {
3208                max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
3209                max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
3210        }
3211
3212        bytes_to_copy = offsetof(struct ipr_sdt, entry) +
3213                        (max_num_entries * sizeof(struct ipr_sdt_entry));
3214        rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
3215                                        bytes_to_copy / sizeof(__be32));
3216
3217        /* Smart Dump table is ready to use and the first entry is valid */
3218        if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
3219            (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
3220                dev_err(&ioa_cfg->pdev->dev,
3221                        "Dump of IOA failed. Dump table not valid: %d, %X.\n",
3222                        rc, be32_to_cpu(sdt->hdr.state));
3223                driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
3224                ioa_cfg->sdt_state = DUMP_OBTAINED;
3225                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3226                return;
3227        }
3228
3229        num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
3230
3231        if (num_entries > max_num_entries)
3232                num_entries = max_num_entries;
3233
3234        /* Update dump length to the actual data to be copied */
3235        dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
3236        if (ioa_cfg->sis64)
3237                dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
3238        else
3239                dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
3240
3241        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3242
3243        for (i = 0; i < num_entries; i++) {
3244                if (ioa_dump->hdr.len > max_dump_size) {
3245                        driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3246                        break;
3247                }
3248
3249                if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
3250                        sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3251                        if (ioa_cfg->sis64)
3252                                bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3253                        else {
3254                                start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3255                                end_off = be32_to_cpu(sdt->entry[i].end_token);
3256
3257                                if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3258                                        bytes_to_copy = end_off - start_off;
3259                                else
3260                                        valid = 0;
3261                        }
3262                        if (valid) {
3263                                if (bytes_to_copy > max_dump_size) {
3264                                        sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3265                                        continue;
3266                                }
3267
3268                                /* Copy data from adapter to driver buffers */
3269                                bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3270                                                            bytes_to_copy);
3271
3272                                ioa_dump->hdr.len += bytes_copied;
3273
3274                                if (bytes_copied != bytes_to_copy) {
3275                                        driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3276                                        break;
3277                                }
3278                        }
3279                }
3280        }
3281
3282        dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3283
3284        /* Update dump_header */
3285        driver_dump->hdr.len += ioa_dump->hdr.len;
3286        wmb();
3287        ioa_cfg->sdt_state = DUMP_OBTAINED;
3288        LEAVE;
3289}
3290
3291#else
3292#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0)
3293#endif
3294
3295/**
3296 * ipr_release_dump - Free adapter dump memory
3297 * @kref:       kref struct
3298 *
3299 * Return value:
3300 *      nothing
3301 **/
3302static void ipr_release_dump(struct kref *kref)
3303{
3304        struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref);
3305        struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3306        unsigned long lock_flags = 0;
3307        int i;
3308
3309        ENTER;
3310        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3311        ioa_cfg->dump = NULL;
3312        ioa_cfg->sdt_state = INACTIVE;
3313        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3314
3315        for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3316                free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3317
3318        vfree(dump->ioa_dump.ioa_data);
3319        kfree(dump);
3320        LEAVE;
3321}
3322
3323static void ipr_add_remove_thread(struct work_struct *work)
3324{
3325        unsigned long lock_flags;
3326        struct ipr_resource_entry *res;
3327        struct scsi_device *sdev;
3328        struct ipr_ioa_cfg *ioa_cfg =
3329                container_of(work, struct ipr_ioa_cfg, scsi_add_work_q);
3330        u8 bus, target, lun;
3331        int did_work;
3332
3333        ENTER;
3334        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3335
3336restart:
3337        do {
3338                did_work = 0;
3339                if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
3340                        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3341                        return;
3342                }
3343
3344                list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3345                        if (res->del_from_ml && res->sdev) {
3346                                did_work = 1;
3347                                sdev = res->sdev;
3348                                if (!scsi_device_get(sdev)) {
3349                                        if (!res->add_to_ml)
3350                                                list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3351                                        else
3352                                                res->del_from_ml = 0;
3353                                        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3354                                        scsi_remove_device(sdev);
3355                                        scsi_device_put(sdev);
3356                                        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3357                                }
3358                                break;
3359                        }
3360                }
3361        } while (did_work);
3362
3363        list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3364                if (res->add_to_ml) {
3365                        bus = res->bus;
3366                        target = res->target;
3367                        lun = res->lun;
3368                        res->add_to_ml = 0;
3369                        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3370                        scsi_add_device(ioa_cfg->host, bus, target, lun);
3371                        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3372                        goto restart;
3373                }
3374        }
3375
3376        ioa_cfg->scan_done = 1;
3377        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3378        kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3379        LEAVE;
3380}
3381
3382/**
3383 * ipr_worker_thread - Worker thread
3384 * @work:               ioa config struct
3385 *
3386 * Called at task level from a work thread. This function takes care
3387 * of adding and removing device from the mid-layer as configuration
3388 * changes are detected by the adapter.
3389 *
3390 * Return value:
3391 *      nothing
3392 **/
3393static void ipr_worker_thread(struct work_struct *work)
3394{
3395        unsigned long lock_flags;
3396        struct ipr_dump *dump;
3397        struct ipr_ioa_cfg *ioa_cfg =
3398                container_of(work, struct ipr_ioa_cfg, work_q);
3399
3400        ENTER;
3401        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3402
3403        if (ioa_cfg->sdt_state == READ_DUMP) {
3404                dump = ioa_cfg->dump;
3405                if (!dump) {
3406                        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3407                        return;
3408                }
3409                kref_get(&dump->kref);
3410                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3411                ipr_get_ioa_dump(ioa_cfg, dump);
3412                kref_put(&dump->kref, ipr_release_dump);
3413
3414                spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3415                if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout)
3416                        ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3417                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3418                return;
3419        }
3420
3421        if (ioa_cfg->scsi_unblock) {
3422                ioa_cfg->scsi_unblock = 0;
3423                ioa_cfg->scsi_blocked = 0;
3424                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3425                scsi_unblock_requests(ioa_cfg->host);
3426                spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3427                if (ioa_cfg->scsi_blocked)
3428                        scsi_block_requests(ioa_cfg->host);
3429        }
3430
3431        if (!ioa_cfg->scan_enabled) {
3432                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3433                return;
3434        }
3435
3436        schedule_work(&ioa_cfg->scsi_add_work_q);
3437
3438        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3439        LEAVE;
3440}
3441
3442#ifdef CONFIG_SCSI_IPR_TRACE
3443/**
3444 * ipr_read_trace - Dump the adapter trace
3445 * @filp:               open sysfs file
3446 * @kobj:               kobject struct
3447 * @bin_attr:           bin_attribute struct
3448 * @buf:                buffer
3449 * @off:                offset
3450 * @count:              buffer size
3451 *
3452 * Return value:
3453 *      number of bytes printed to buffer
3454 **/
3455static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3456                              struct bin_attribute *bin_attr,
3457                              char *buf, loff_t off, size_t count)
3458{
3459        struct device *dev = container_of(kobj, struct device, kobj);
3460        struct Scsi_Host *shost = class_to_shost(dev);
3461        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3462        unsigned long lock_flags = 0;
3463        ssize_t ret;
3464
3465        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3466        ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3467                                IPR_TRACE_SIZE);
3468        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3469
3470        return ret;
3471}
3472
3473static struct bin_attribute ipr_trace_attr = {
3474        .attr = {
3475                .name = "trace",
3476                .mode = S_IRUGO,
3477        },
3478        .size = 0,
3479        .read = ipr_read_trace,
3480};
3481#endif
3482
3483/**
3484 * ipr_show_fw_version - Show the firmware version
3485 * @dev:        class device struct
3486 * @attr:       device attribute (unused)
3487 * @buf:        buffer
3488 *
3489 * Return value:
3490 *      number of bytes printed to buffer
3491 **/
3492static ssize_t ipr_show_fw_version(struct device *dev,
3493                                   struct device_attribute *attr, char *buf)
3494{
3495        struct Scsi_Host *shost = class_to_shost(dev);
3496        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3497        struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3498        unsigned long lock_flags = 0;
3499        int len;
3500
3501        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3502        len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3503                       ucode_vpd->major_release, ucode_vpd->card_type,
3504                       ucode_vpd->minor_release[0],
3505                       ucode_vpd->minor_release[1]);
3506        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3507        return len;
3508}
3509
3510static struct device_attribute ipr_fw_version_attr = {
3511        .attr = {
3512                .name =         "fw_version",
3513                .mode =         S_IRUGO,
3514        },
3515        .show = ipr_show_fw_version,
3516};
3517
3518/**
3519 * ipr_show_log_level - Show the adapter's error logging level
3520 * @dev:        class device struct
3521 * @attr:       device attribute (unused)
3522 * @buf:        buffer
3523 *
3524 * Return value:
3525 *      number of bytes printed to buffer
3526 **/
3527static ssize_t ipr_show_log_level(struct device *dev,
3528                                   struct device_attribute *attr, char *buf)
3529{
3530        struct Scsi_Host *shost = class_to_shost(dev);
3531        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3532        unsigned long lock_flags = 0;
3533        int len;
3534
3535        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3536        len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3537        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3538        return len;
3539}
3540
3541/**
3542 * ipr_store_log_level - Change the adapter's error logging level
3543 * @dev:        class device struct
3544 * @attr:       device attribute (unused)
3545 * @buf:        buffer
3546 * @count:      buffer size
3547 *
3548 * Return value:
3549 *      number of bytes printed to buffer
3550 **/
3551static ssize_t ipr_store_log_level(struct device *dev,
3552                                   struct device_attribute *attr,
3553                                   const char *buf, size_t count)
3554{
3555        struct Scsi_Host *shost = class_to_shost(dev);
3556        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3557        unsigned long lock_flags = 0;
3558
3559        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3560        ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3561        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3562        return strlen(buf);
3563}
3564
3565static struct device_attribute ipr_log_level_attr = {
3566        .attr = {
3567                .name =         "log_level",
3568                .mode =         S_IRUGO | S_IWUSR,
3569        },
3570        .show = ipr_show_log_level,
3571        .store = ipr_store_log_level
3572};
3573
3574/**
3575 * ipr_store_diagnostics - IOA Diagnostics interface
3576 * @dev:        device struct
3577 * @attr:       device attribute (unused)
3578 * @buf:        buffer
3579 * @count:      buffer size
3580 *
3581 * This function will reset the adapter and wait a reasonable
3582 * amount of time for any errors that the adapter might log.
3583 *
3584 * Return value:
3585 *      count on success / other on failure
3586 **/
3587static ssize_t ipr_store_diagnostics(struct device *dev,
3588                                     struct device_attribute *attr,
3589                                     const char *buf, size_t count)
3590{
3591        struct Scsi_Host *shost = class_to_shost(dev);
3592        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3593        unsigned long lock_flags = 0;
3594        int rc = count;
3595
3596        if (!capable(CAP_SYS_ADMIN))
3597                return -EACCES;
3598
3599        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3600        while (ioa_cfg->in_reset_reload) {
3601                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3602                wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3603                spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3604        }
3605
3606        ioa_cfg->errors_logged = 0;
3607        ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3608
3609        if (ioa_cfg->in_reset_reload) {
3610                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3611                wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3612
3613                /* Wait for a second for any errors to be logged */
3614                msleep(1000);
3615        } else {
3616                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3617                return -EIO;
3618        }
3619
3620        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3621        if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3622                rc = -EIO;
3623        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3624
3625        return rc;
3626}
3627
3628static struct device_attribute ipr_diagnostics_attr = {
3629        .attr = {
3630                .name =         "run_diagnostics",
3631                .mode =         S_IWUSR,
3632        },
3633        .store = ipr_store_diagnostics
3634};
3635
3636/**
3637 * ipr_show_adapter_state - Show the adapter's state
3638 * @dev:        device struct
3639 * @attr:       device attribute (unused)
3640 * @buf:        buffer
3641 *
3642 * Return value:
3643 *      number of bytes printed to buffer
3644 **/
3645static ssize_t ipr_show_adapter_state(struct device *dev,
3646                                      struct device_attribute *attr, char *buf)
3647{
3648        struct Scsi_Host *shost = class_to_shost(dev);
3649        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3650        unsigned long lock_flags = 0;
3651        int len;
3652
3653        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3654        if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
3655                len = snprintf(buf, PAGE_SIZE, "offline\n");
3656        else
3657                len = snprintf(buf, PAGE_SIZE, "online\n");
3658        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3659        return len;
3660}
3661
3662/**
3663 * ipr_store_adapter_state - Change adapter state
3664 * @dev:        device struct
3665 * @attr:       device attribute (unused)
3666 * @buf:        buffer
3667 * @count:      buffer size
3668 *
3669 * This function will change the adapter's state.
3670 *
3671 * Return value:
3672 *      count on success / other on failure
3673 **/
3674static ssize_t ipr_store_adapter_state(struct device *dev,
3675                                       struct device_attribute *attr,
3676                                       const char *buf, size_t count)
3677{
3678        struct Scsi_Host *shost = class_to_shost(dev);
3679        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3680        unsigned long lock_flags;
3681        int result = count, i;
3682
3683        if (!capable(CAP_SYS_ADMIN))
3684                return -EACCES;
3685
3686        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3687        if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead &&
3688            !strncmp(buf, "online", 6)) {
3689                for (i = 0; i < ioa_cfg->hrrq_num; i++) {
3690                        spin_lock(&ioa_cfg->hrrq[i]._lock);
3691                        ioa_cfg->hrrq[i].ioa_is_dead = 0;
3692                        spin_unlock(&ioa_cfg->hrrq[i]._lock);
3693                }
3694                wmb();
3695                ioa_cfg->reset_retries = 0;
3696                ioa_cfg->in_ioa_bringdown = 0;
3697                ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3698        }
3699        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3700        wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3701
3702        return result;
3703}
3704
3705static struct device_attribute ipr_ioa_state_attr = {
3706        .attr = {
3707                .name =         "online_state",
3708                .mode =         S_IRUGO | S_IWUSR,
3709        },
3710        .show = ipr_show_adapter_state,
3711        .store = ipr_store_adapter_state
3712};
3713
3714/**
3715 * ipr_store_reset_adapter - Reset the adapter
3716 * @dev:        device struct
3717 * @attr:       device attribute (unused)
3718 * @buf:        buffer
3719 * @count:      buffer size
3720 *
3721 * This function will reset the adapter.
3722 *
3723 * Return value:
3724 *      count on success / other on failure
3725 **/
3726static ssize_t ipr_store_reset_adapter(struct device *dev,
3727                                       struct device_attribute *attr,
3728                                       const char *buf, size_t count)
3729{
3730        struct Scsi_Host *shost = class_to_shost(dev);
3731        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3732        unsigned long lock_flags;
3733        int result = count;
3734
3735        if (!capable(CAP_SYS_ADMIN))
3736                return -EACCES;
3737
3738        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3739        if (!ioa_cfg->in_reset_reload)
3740                ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3741        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3742        wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3743
3744        return result;
3745}
3746
3747static struct device_attribute ipr_ioa_reset_attr = {
3748        .attr = {
3749                .name =         "reset_host",
3750                .mode =         S_IWUSR,
3751        },
3752        .store = ipr_store_reset_adapter
3753};
3754
3755static int ipr_iopoll(struct irq_poll *iop, int budget);
3756 /**
3757 * ipr_show_iopoll_weight - Show ipr polling mode
3758 * @dev:        class device struct
3759 * @attr:       device attribute (unused)
3760 * @buf:        buffer
3761 *
3762 * Return value:
3763 *      number of bytes printed to buffer
3764 **/
3765static ssize_t ipr_show_iopoll_weight(struct device *dev,
3766                                   struct device_attribute *attr, char *buf)
3767{
3768        struct Scsi_Host *shost = class_to_shost(dev);
3769        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3770        unsigned long lock_flags = 0;
3771        int len;
3772
3773        spin_lock_irqsave(shost->host_lock, lock_flags);
3774        len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight);
3775        spin_unlock_irqrestore(shost->host_lock, lock_flags);
3776
3777        return len;
3778}
3779
3780/**
3781 * ipr_store_iopoll_weight - Change the adapter's polling mode
3782 * @dev:        class device struct
3783 * @attr:       device attribute (unused)
3784 * @buf:        buffer
3785 * @count:      buffer size
3786 *
3787 * Return value:
3788 *      number of bytes printed to buffer
3789 **/
3790static ssize_t ipr_store_iopoll_weight(struct device *dev,
3791                                        struct device_attribute *attr,
3792                                        const char *buf, size_t count)
3793{
3794        struct Scsi_Host *shost = class_to_shost(dev);
3795        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3796        unsigned long user_iopoll_weight;
3797        unsigned long lock_flags = 0;
3798        int i;
3799
3800        if (!ioa_cfg->sis64) {
3801                dev_info(&ioa_cfg->pdev->dev, "irq_poll not supported on this adapter\n");
3802                return -EINVAL;
3803        }
3804        if (kstrtoul(buf, 10, &user_iopoll_weight))
3805                return -EINVAL;
3806
3807        if (user_iopoll_weight > 256) {
3808                dev_info(&ioa_cfg->pdev->dev, "Invalid irq_poll weight. It must be less than 256\n");
3809                return -EINVAL;
3810        }
3811
3812        if (user_iopoll_weight == ioa_cfg->iopoll_weight) {
3813                dev_info(&ioa_cfg->pdev->dev, "Current irq_poll weight has the same weight\n");
3814                return strlen(buf);
3815        }
3816
3817        if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3818                for (i = 1; i < ioa_cfg->hrrq_num; i++)
3819                        irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
3820        }
3821
3822        spin_lock_irqsave(shost->host_lock, lock_flags);
3823        ioa_cfg->iopoll_weight = user_iopoll_weight;
3824        if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3825                for (i = 1; i < ioa_cfg->hrrq_num; i++) {
3826                        irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
3827                                        ioa_cfg->iopoll_weight, ipr_iopoll);
3828                }
3829        }
3830        spin_unlock_irqrestore(shost->host_lock, lock_flags);
3831
3832        return strlen(buf);
3833}
3834
3835static struct device_attribute ipr_iopoll_weight_attr = {
3836        .attr = {
3837                .name =         "iopoll_weight",
3838                .mode =         S_IRUGO | S_IWUSR,
3839        },
3840        .show = ipr_show_iopoll_weight,
3841        .store = ipr_store_iopoll_weight
3842};
3843
3844/**
3845 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3846 * @buf_len:            buffer length
3847 *
3848 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3849 * list to use for microcode download
3850 *
3851 * Return value:
3852 *      pointer to sglist / NULL on failure
3853 **/
3854static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3855{
3856        int sg_size, order;
3857        struct ipr_sglist *sglist;
3858
3859        /* Get the minimum size per scatter/gather element */
3860        sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3861
3862        /* Get the actual size per element */
3863        order = get_order(sg_size);
3864
3865        /* Allocate a scatter/gather list for the DMA */
3866        sglist = kzalloc(sizeof(struct ipr_sglist), GFP_KERNEL);
3867        if (sglist == NULL) {
3868                ipr_trace;
3869                return NULL;
3870        }
3871        sglist->order = order;
3872        sglist->scatterlist = sgl_alloc_order(buf_len, order, false, GFP_KERNEL,
3873                                              &sglist->num_sg);
3874        if (!sglist->scatterlist) {
3875                kfree(sglist);
3876                return NULL;
3877        }
3878
3879        return sglist;
3880}
3881
3882/**
3883 * ipr_free_ucode_buffer - Frees a microcode download buffer
3884 * @sglist:             scatter/gather list pointer
3885 *
3886 * Free a DMA'able ucode download buffer previously allocated with
3887 * ipr_alloc_ucode_buffer
3888 *
3889 * Return value:
3890 *      nothing
3891 **/
3892static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3893{
3894        sgl_free_order(sglist->scatterlist, sglist->order);
3895        kfree(sglist);
3896}
3897
3898/**
3899 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3900 * @sglist:             scatter/gather list pointer
3901 * @buffer:             buffer pointer
3902 * @len:                buffer length
3903 *
3904 * Copy a microcode image from a user buffer into a buffer allocated by
3905 * ipr_alloc_ucode_buffer
3906 *
3907 * Return value:
3908 *      0 on success / other on failure
3909 **/
3910static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3911                                 u8 *buffer, u32 len)
3912{
3913        int bsize_elem, i, result = 0;
3914        struct scatterlist *sg;
3915        void *kaddr;
3916
3917        /* Determine the actual number of bytes per element */
3918        bsize_elem = PAGE_SIZE * (1 << sglist->order);
3919
3920        sg = sglist->scatterlist;
3921
3922        for (i = 0; i < (len / bsize_elem); i++, sg = sg_next(sg),
3923                        buffer += bsize_elem) {
3924                struct page *page = sg_page(sg);
3925
3926                kaddr = kmap(page);
3927                memcpy(kaddr, buffer, bsize_elem);
3928                kunmap(page);
3929
3930                sg->length = bsize_elem;
3931
3932                if (result != 0) {
3933                        ipr_trace;
3934                        return result;
3935                }
3936        }
3937
3938        if (len % bsize_elem) {
3939                struct page *page = sg_page(sg);
3940
3941                kaddr = kmap(page);
3942                memcpy(kaddr, buffer, len % bsize_elem);
3943                kunmap(page);
3944
3945                sg->length = len % bsize_elem;
3946        }
3947
3948        sglist->buffer_len = len;
3949        return result;
3950}
3951
3952/**
3953 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3954 * @ipr_cmd:            ipr command struct
3955 * @sglist:             scatter/gather list
3956 *
3957 * Builds a microcode download IOA data list (IOADL).
3958 *
3959 **/
3960static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3961                                    struct ipr_sglist *sglist)
3962{
3963        struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3964        struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3965        struct scatterlist *scatterlist = sglist->scatterlist;
3966        struct scatterlist *sg;
3967        int i;
3968
3969        ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3970        ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3971        ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3972
3973        ioarcb->ioadl_len =
3974                cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3975        for_each_sg(scatterlist, sg, ipr_cmd->dma_use_sg, i) {
3976                ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3977                ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
3978                ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
3979        }
3980
3981        ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3982}
3983
3984/**
3985 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3986 * @ipr_cmd:    ipr command struct
3987 * @sglist:             scatter/gather list
3988 *
3989 * Builds a microcode download IOA data list (IOADL).
3990 *
3991 **/
3992static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3993                                  struct ipr_sglist *sglist)
3994{
3995        struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3996        struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3997        struct scatterlist *scatterlist = sglist->scatterlist;
3998        struct scatterlist *sg;
3999        int i;
4000
4001        ipr_cmd->dma_use_sg = sglist->num_dma_sg;
4002        ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4003        ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
4004
4005        ioarcb->ioadl_len =
4006                cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4007
4008        for_each_sg(scatterlist, sg, ipr_cmd->dma_use_sg, i) {
4009                ioadl[i].flags_and_data_len =
4010                        cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(sg));
4011                ioadl[i].address =
4012                        cpu_to_be32(sg_dma_address(sg));
4013        }
4014
4015        ioadl[i-1].flags_and_data_len |=
4016                cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4017}
4018
4019/**
4020 * ipr_update_ioa_ucode - Update IOA's microcode
4021 * @ioa_cfg:    ioa config struct
4022 * @sglist:             scatter/gather list
4023 *
4024 * Initiate an adapter reset to update the IOA's microcode
4025 *
4026 * Return value:
4027 *      0 on success / -EIO on failure
4028 **/
4029static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
4030                                struct ipr_sglist *sglist)
4031{
4032        unsigned long lock_flags;
4033
4034        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4035        while (ioa_cfg->in_reset_reload) {
4036                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4037                wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4038                spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4039        }
4040
4041        if (ioa_cfg->ucode_sglist) {
4042                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4043                dev_err(&ioa_cfg->pdev->dev,
4044                        "Microcode download already in progress\n");
4045                return -EIO;
4046        }
4047
4048        sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev,
4049                                        sglist->scatterlist, sglist->num_sg,
4050                                        DMA_TO_DEVICE);
4051
4052        if (!sglist->num_dma_sg) {
4053                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4054                dev_err(&ioa_cfg->pdev->dev,
4055                        "Failed to map microcode download buffer!\n");
4056                return -EIO;
4057        }
4058
4059        ioa_cfg->ucode_sglist = sglist;
4060        ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
4061        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4062        wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4063
4064        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4065        ioa_cfg->ucode_sglist = NULL;
4066        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4067        return 0;
4068}
4069
4070/**
4071 * ipr_store_update_fw - Update the firmware on the adapter
4072 * @dev:        device struct
4073 * @attr:       device attribute (unused)
4074 * @buf:        buffer
4075 * @count:      buffer size
4076 *
4077 * This function will update the firmware on the adapter.
4078 *
4079 * Return value:
4080 *      count on success / other on failure
4081 **/
4082static ssize_t ipr_store_update_fw(struct device *dev,
4083                                   struct device_attribute *attr,
4084                                   const char *buf, size_t count)
4085{
4086        struct Scsi_Host *shost = class_to_shost(dev);
4087        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4088        struct ipr_ucode_image_header *image_hdr;
4089        const struct firmware *fw_entry;
4090        struct ipr_sglist *sglist;
4091        char fname[100];
4092        char *src;
4093        char *endline;
4094        int result, dnld_size;
4095
4096        if (!capable(CAP_SYS_ADMIN))
4097                return -EACCES;
4098
4099        snprintf(fname, sizeof(fname), "%s", buf);
4100
4101        endline = strchr(fname, '\n');
4102        if (endline)
4103                *endline = '\0';
4104
4105        if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
4106                dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
4107                return -EIO;
4108        }
4109
4110        image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
4111
4112        src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
4113        dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
4114        sglist = ipr_alloc_ucode_buffer(dnld_size);
4115
4116        if (!sglist) {
4117                dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
4118                release_firmware(fw_entry);
4119                return -ENOMEM;
4120        }
4121
4122        result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
4123
4124        if (result) {
4125                dev_err(&ioa_cfg->pdev->dev,
4126                        "Microcode buffer copy to DMA buffer failed\n");
4127                goto out;
4128        }
4129
4130        ipr_info("Updating microcode, please be patient.  This may take up to 30 minutes.\n");
4131
4132        result = ipr_update_ioa_ucode(ioa_cfg, sglist);
4133
4134        if (!result)
4135                result = count;
4136out:
4137        ipr_free_ucode_buffer(sglist);
4138        release_firmware(fw_entry);
4139        return result;
4140}
4141
4142static struct device_attribute ipr_update_fw_attr = {
4143        .attr = {
4144                .name =         "update_fw",
4145                .mode =         S_IWUSR,
4146        },
4147        .store = ipr_store_update_fw
4148};
4149
4150/**
4151 * ipr_show_fw_type - Show the adapter's firmware type.
4152 * @dev:        class device struct
4153 * @attr:       device attribute (unused)
4154 * @buf:        buffer
4155 *
4156 * Return value:
4157 *      number of bytes printed to buffer
4158 **/
4159static ssize_t ipr_show_fw_type(struct device *dev,
4160                                struct device_attribute *attr, char *buf)
4161{
4162        struct Scsi_Host *shost = class_to_shost(dev);
4163        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4164        unsigned long lock_flags = 0;
4165        int len;
4166
4167        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4168        len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
4169        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4170        return len;
4171}
4172
4173static struct device_attribute ipr_ioa_fw_type_attr = {
4174        .attr = {
4175                .name =         "fw_type",
4176                .mode =         S_IRUGO,
4177        },
4178        .show = ipr_show_fw_type
4179};
4180
4181static ssize_t ipr_read_async_err_log(struct file *filep, struct kobject *kobj,
4182                                struct bin_attribute *bin_attr, char *buf,
4183                                loff_t off, size_t count)
4184{
4185        struct device *cdev = container_of(kobj, struct device, kobj);
4186        struct Scsi_Host *shost = class_to_shost(cdev);
4187        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4188        struct ipr_hostrcb *hostrcb;
4189        unsigned long lock_flags = 0;
4190        int ret;
4191
4192        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4193        hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q,
4194                                        struct ipr_hostrcb, queue);
4195        if (!hostrcb) {
4196                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4197                return 0;
4198        }
4199        ret = memory_read_from_buffer(buf, count, &off, &hostrcb->hcam,
4200                                sizeof(hostrcb->hcam));
4201        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4202        return ret;
4203}
4204
4205static ssize_t ipr_next_async_err_log(struct file *filep, struct kobject *kobj,
4206                                struct bin_attribute *bin_attr, char *buf,
4207                                loff_t off, size_t count)
4208{
4209        struct device *cdev = container_of(kobj, struct device, kobj);
4210        struct Scsi_Host *shost = class_to_shost(cdev);
4211        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4212        struct ipr_hostrcb *hostrcb;
4213        unsigned long lock_flags = 0;
4214
4215        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4216        hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q,
4217                                        struct ipr_hostrcb, queue);
4218        if (!hostrcb) {
4219                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4220                return count;
4221        }
4222
4223        /* Reclaim hostrcb before exit */
4224        list_move_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
4225        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4226        return count;
4227}
4228
4229static struct bin_attribute ipr_ioa_async_err_log = {
4230        .attr = {
4231                .name =         "async_err_log",
4232                .mode =         S_IRUGO | S_IWUSR,
4233        },
4234        .size = 0,
4235        .read = ipr_read_async_err_log,
4236        .write = ipr_next_async_err_log
4237};
4238
4239static struct device_attribute *ipr_ioa_attrs[] = {
4240        &ipr_fw_version_attr,
4241        &ipr_log_level_attr,
4242        &ipr_diagnostics_attr,
4243        &ipr_ioa_state_attr,
4244        &ipr_ioa_reset_attr,
4245        &ipr_update_fw_attr,
4246        &ipr_ioa_fw_type_attr,
4247        &ipr_iopoll_weight_attr,
4248        NULL,
4249};
4250
4251#ifdef CONFIG_SCSI_IPR_DUMP
4252/**
4253 * ipr_read_dump - Dump the adapter
4254 * @filp:               open sysfs file
4255 * @kobj:               kobject struct
4256 * @bin_attr:           bin_attribute struct
4257 * @buf:                buffer
4258 * @off:                offset
4259 * @count:              buffer size
4260 *
4261 * Return value:
4262 *      number of bytes printed to buffer
4263 **/
4264static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
4265                             struct bin_attribute *bin_attr,
4266                             char *buf, loff_t off, size_t count)
4267{
4268        struct device *cdev = container_of(kobj, struct device, kobj);
4269        struct Scsi_Host *shost = class_to_shost(cdev);
4270        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4271        struct ipr_dump *dump;
4272        unsigned long lock_flags = 0;
4273        char *src;
4274        int len, sdt_end;
4275        size_t rc = count;
4276
4277        if (!capable(CAP_SYS_ADMIN))
4278                return -EACCES;
4279
4280        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4281        dump = ioa_cfg->dump;
4282
4283        if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
4284                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4285                return 0;
4286        }
4287        kref_get(&dump->kref);
4288        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4289
4290        if (off > dump->driver_dump.hdr.len) {
4291                kref_put(&dump->kref, ipr_release_dump);
4292                return 0;
4293        }
4294
4295        if (off + count > dump->driver_dump.hdr.len) {
4296                count = dump->driver_dump.hdr.len - off;
4297                rc = count;
4298        }
4299
4300        if (count && off < sizeof(dump->driver_dump)) {
4301                if (off + count > sizeof(dump->driver_dump))
4302                        len = sizeof(dump->driver_dump) - off;
4303                else
4304                        len = count;
4305                src = (u8 *)&dump->driver_dump + off;
4306                memcpy(buf, src, len);
4307                buf += len;
4308                off += len;
4309                count -= len;
4310        }
4311
4312        off -= sizeof(dump->driver_dump);
4313
4314        if (ioa_cfg->sis64)
4315                sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4316                          (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
4317                           sizeof(struct ipr_sdt_entry));
4318        else
4319                sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4320                          (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
4321
4322        if (count && off < sdt_end) {
4323                if (off + count > sdt_end)
4324                        len = sdt_end - off;
4325                else
4326                        len = count;
4327                src = (u8 *)&dump->ioa_dump + off;
4328                memcpy(buf, src, len);
4329                buf += len;
4330                off += len;
4331                count -= len;
4332        }
4333
4334        off -= sdt_end;
4335
4336        while (count) {
4337                if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
4338                        len = PAGE_ALIGN(off) - off;
4339                else
4340                        len = count;
4341                src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
4342                src += off & ~PAGE_MASK;
4343                memcpy(buf, src, len);
4344                buf += len;
4345                off += len;
4346                count -= len;
4347        }
4348
4349        kref_put(&dump->kref, ipr_release_dump);
4350        return rc;
4351}
4352
4353/**
4354 * ipr_alloc_dump - Prepare for adapter dump
4355 * @ioa_cfg:    ioa config struct
4356 *
4357 * Return value:
4358 *      0 on success / other on failure
4359 **/
4360static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
4361{
4362        struct ipr_dump *dump;
4363        __be32 **ioa_data;
4364        unsigned long lock_flags = 0;
4365
4366        dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
4367
4368        if (!dump) {
4369                ipr_err("Dump memory allocation failed\n");
4370                return -ENOMEM;
4371        }
4372
4373        if (ioa_cfg->sis64)
4374                ioa_data = vmalloc(array_size(IPR_FMT3_MAX_NUM_DUMP_PAGES,
4375                                              sizeof(__be32 *)));
4376        else
4377                ioa_data = vmalloc(array_size(IPR_FMT2_MAX_NUM_DUMP_PAGES,
4378                                              sizeof(__be32 *)));
4379
4380        if (!ioa_data) {
4381                ipr_err("Dump memory allocation failed\n");
4382                kfree(dump);
4383                return -ENOMEM;
4384        }
4385
4386        dump->ioa_dump.ioa_data = ioa_data;
4387
4388        kref_init(&dump->kref);
4389        dump->ioa_cfg = ioa_cfg;
4390
4391        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4392
4393        if (INACTIVE != ioa_cfg->sdt_state) {
4394                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4395                vfree(dump->ioa_dump.ioa_data);
4396                kfree(dump);
4397                return 0;
4398        }
4399
4400        ioa_cfg->dump = dump;
4401        ioa_cfg->sdt_state = WAIT_FOR_DUMP;
4402        if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) {
4403                ioa_cfg->dump_taken = 1;
4404                schedule_work(&ioa_cfg->work_q);
4405        }
4406        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4407
4408        return 0;
4409}
4410
4411/**
4412 * ipr_free_dump - Free adapter dump memory
4413 * @ioa_cfg:    ioa config struct
4414 *
4415 * Return value:
4416 *      0 on success / other on failure
4417 **/
4418static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
4419{
4420        struct ipr_dump *dump;
4421        unsigned long lock_flags = 0;
4422
4423        ENTER;
4424
4425        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4426        dump = ioa_cfg->dump;
4427        if (!dump) {
4428                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4429                return 0;
4430        }
4431
4432        ioa_cfg->dump = NULL;
4433        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4434
4435        kref_put(&dump->kref, ipr_release_dump);
4436
4437        LEAVE;
4438        return 0;
4439}
4440
4441/**
4442 * ipr_write_dump - Setup dump state of adapter
4443 * @filp:               open sysfs file
4444 * @kobj:               kobject struct
4445 * @bin_attr:           bin_attribute struct
4446 * @buf:                buffer
4447 * @off:                offset
4448 * @count:              buffer size
4449 *
4450 * Return value:
4451 *      number of bytes printed to buffer
4452 **/
4453static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4454                              struct bin_attribute *bin_attr,
4455                              char *buf, loff_t off, size_t count)
4456{
4457        struct device *cdev = container_of(kobj, struct device, kobj);
4458        struct Scsi_Host *shost = class_to_shost(cdev);
4459        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4460        int rc;
4461
4462        if (!capable(CAP_SYS_ADMIN))
4463                return -EACCES;
4464
4465        if (buf[0] == '1')
4466                rc = ipr_alloc_dump(ioa_cfg);
4467        else if (buf[0] == '0')
4468                rc = ipr_free_dump(ioa_cfg);
4469        else
4470                return -EINVAL;
4471
4472        if (rc)
4473                return rc;
4474        else
4475                return count;
4476}
4477
4478static struct bin_attribute ipr_dump_attr = {
4479        .attr = {
4480                .name = "dump",
4481                .mode = S_IRUSR | S_IWUSR,
4482        },
4483        .size = 0,
4484        .read = ipr_read_dump,
4485        .write = ipr_write_dump
4486};
4487#else
4488static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4489#endif
4490
4491/**
4492 * ipr_change_queue_depth - Change the device's queue depth
4493 * @sdev:       scsi device struct
4494 * @qdepth:     depth to set
4495 *
4496 * Return value:
4497 *      actual depth set
4498 **/
4499static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
4500{
4501        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4502        struct ipr_resource_entry *res;
4503        unsigned long lock_flags = 0;
4504
4505        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4506        res = (struct ipr_resource_entry *)sdev->hostdata;
4507
4508        if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4509                qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4510        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4511
4512        scsi_change_queue_depth(sdev, qdepth);
4513        return sdev->queue_depth;
4514}
4515
4516/**
4517 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4518 * @dev:        device struct
4519 * @attr:       device attribute structure
4520 * @buf:        buffer
4521 *
4522 * Return value:
4523 *      number of bytes printed to buffer
4524 **/
4525static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4526{
4527        struct scsi_device *sdev = to_scsi_device(dev);
4528        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4529        struct ipr_resource_entry *res;
4530        unsigned long lock_flags = 0;
4531        ssize_t len = -ENXIO;
4532
4533        spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4534        res = (struct ipr_resource_entry *)sdev->hostdata;
4535        if (res)
4536                len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4537        spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4538        return len;
4539}
4540
4541static struct device_attribute ipr_adapter_handle_attr = {
4542        .attr = {
4543                .name =         "adapter_handle",
4544                .mode =         S_IRUSR,
4545        },
4546        .show = ipr_show_adapter_handle
4547};
4548
4549/**
4550 * ipr_show_resource_path - Show the resource path or the resource address for
4551 *                          this device.
4552 * @dev:        device struct
4553 * @attr:       device attribute structure
4554 * @buf:        buffer
4555 *
4556 * Return value:
4557 *      number of bytes printed to buffer
4558 **/
4559static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4560{
4561        struct scsi_device *sdev = to_scsi_device(dev);
4562        struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;