ipr.c revision e435340c4b583b4472dad1178029b8e3e7dafd0b
1/* 2 * ipr.c -- driver for IBM Power Linux RAID adapters 3 * 4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation 5 * 6 * Copyright (C) 2003, 2004 IBM Corporation 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23 24/* 25 * Notes: 26 * 27 * This driver is used to control the following SCSI adapters: 28 * 29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B 30 * 31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter 32 * PCI-X Dual Channel Ultra 320 SCSI Adapter 33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card 34 * Embedded SCSI adapter on p615 and p655 systems 35 * 36 * Supported Hardware Features: 37 * - Ultra 320 SCSI controller 38 * - PCI-X host interface 39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine 40 * - Non-Volatile Write Cache 41 * - Supports attachment of non-RAID disks, tape, and optical devices 42 * - RAID Levels 0, 5, 10 43 * - Hot spare 44 * - Background Parity Checking 45 * - Background Data Scrubbing 46 * - Ability to increase the capacity of an existing RAID 5 disk array 47 * by adding disks 48 * 49 * Driver Features: 50 * - Tagged command queuing 51 * - Adapter microcode download 52 * - PCI hot plug 53 * - SCSI device hot plug 54 * 55 */ 56 57#include <linux/fs.h> 58#include <linux/init.h> 59#include <linux/types.h> 60#include <linux/errno.h> 61#include <linux/kernel.h> 62#include <linux/ioport.h> 63#include <linux/delay.h> 64#include <linux/pci.h> 65#include <linux/wait.h> 66#include <linux/spinlock.h> 67#include <linux/sched.h> 68#include <linux/interrupt.h> 69#include <linux/blkdev.h> 70#include <linux/firmware.h> 71#include <linux/module.h> 72#include <linux/moduleparam.h> 73#include <linux/libata.h> 74#include <asm/io.h> 75#include <asm/irq.h> 76#include <asm/processor.h> 77#include <scsi/scsi.h> 78#include <scsi/scsi_host.h> 79#include <scsi/scsi_tcq.h> 80#include <scsi/scsi_eh.h> 81#include <scsi/scsi_cmnd.h> 82#include "ipr.h" 83 84/* 85 * Global Data 86 */ 87static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head); 88static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL; 89static unsigned int ipr_max_speed = 1; 90static int ipr_testmode = 0; 91static unsigned int ipr_fastfail = 0; 92static unsigned int ipr_transop_timeout = 0; 93static unsigned int ipr_enable_cache = 1; 94static unsigned int ipr_debug = 0; 95static DEFINE_SPINLOCK(ipr_driver_lock); 96 97/* This table describes the differences between DMA controller chips */ 98static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { 99 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */ 100 .mailbox = 0x0042C, 101 .cache_line_size = 0x20, 102 { 103 .set_interrupt_mask_reg = 0x0022C, 104 .clr_interrupt_mask_reg = 0x00230, 105 .sense_interrupt_mask_reg = 0x0022C, 106 .clr_interrupt_reg = 0x00228, 107 .sense_interrupt_reg = 0x00224, 108 .ioarrin_reg = 0x00404, 109 .sense_uproc_interrupt_reg = 0x00214, 110 .set_uproc_interrupt_reg = 0x00214, 111 .clr_uproc_interrupt_reg = 0x00218 112 } 113 }, 114 { /* Snipe and Scamp */ 115 .mailbox = 0x0052C, 116 .cache_line_size = 0x20, 117 { 118 .set_interrupt_mask_reg = 0x00288, 119 .clr_interrupt_mask_reg = 0x0028C, 120 .sense_interrupt_mask_reg = 0x00288, 121 .clr_interrupt_reg = 0x00284, 122 .sense_interrupt_reg = 0x00280, 123 .ioarrin_reg = 0x00504, 124 .sense_uproc_interrupt_reg = 0x00290, 125 .set_uproc_interrupt_reg = 0x00290, 126 .clr_uproc_interrupt_reg = 0x00294 127 } 128 }, 129}; 130 131static const struct ipr_chip_t ipr_chip[] = { 132 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] }, 133 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] }, 134 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] }, 135 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] }, 136 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &ipr_chip_cfg[0] }, 137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] }, 138 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] } 139}; 140 141static int ipr_max_bus_speeds [] = { 142 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE 143}; 144 145MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); 146MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); 147module_param_named(max_speed, ipr_max_speed, uint, 0); 148MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); 149module_param_named(log_level, ipr_log_level, uint, 0); 150MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); 151module_param_named(testmode, ipr_testmode, int, 0); 152MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); 153module_param_named(fastfail, ipr_fastfail, int, 0); 154MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); 155module_param_named(transop_timeout, ipr_transop_timeout, int, 0); 156MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); 157module_param_named(enable_cache, ipr_enable_cache, int, 0); 158MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)"); 159module_param_named(debug, ipr_debug, int, 0); 160MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)"); 161MODULE_LICENSE("GPL"); 162MODULE_VERSION(IPR_DRIVER_VERSION); 163 164/* A constant array of IOASCs/URCs/Error Messages */ 165static const 166struct ipr_error_table_t ipr_error_table[] = { 167 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL, 168 "8155: An unknown error was received"}, 169 {0x00330000, 0, 0, 170 "Soft underlength error"}, 171 {0x005A0000, 0, 0, 172 "Command to be cancelled not found"}, 173 {0x00808000, 0, 0, 174 "Qualified success"}, 175 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL, 176 "FFFE: Soft device bus error recovered by the IOA"}, 177 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL, 178 "4101: Soft device bus fabric error"}, 179 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL, 180 "FFF9: Device sector reassign successful"}, 181 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL, 182 "FFF7: Media error recovered by device rewrite procedures"}, 183 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL, 184 "7001: IOA sector reassignment successful"}, 185 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL, 186 "FFF9: Soft media error. Sector reassignment recommended"}, 187 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL, 188 "FFF7: Media error recovered by IOA rewrite procedures"}, 189 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL, 190 "FF3D: Soft PCI bus error recovered by the IOA"}, 191 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL, 192 "FFF6: Device hardware error recovered by the IOA"}, 193 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL, 194 "FFF6: Device hardware error recovered by the device"}, 195 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL, 196 "FF3D: Soft IOA error recovered by the IOA"}, 197 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL, 198 "FFFA: Undefined device response recovered by the IOA"}, 199 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL, 200 "FFF6: Device bus error, message or command phase"}, 201 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL, 202 "FFFE: Task Management Function failed"}, 203 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL, 204 "FFF6: Failure prediction threshold exceeded"}, 205 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL, 206 "8009: Impending cache battery pack failure"}, 207 {0x02040400, 0, 0, 208 "34FF: Disk device format in progress"}, 209 {0x023F0000, 0, 0, 210 "Synchronization required"}, 211 {0x024E0000, 0, 0, 212 "No ready, IOA shutdown"}, 213 {0x025A0000, 0, 0, 214 "Not ready, IOA has been shutdown"}, 215 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL, 216 "3020: Storage subsystem configuration error"}, 217 {0x03110B00, 0, 0, 218 "FFF5: Medium error, data unreadable, recommend reassign"}, 219 {0x03110C00, 0, 0, 220 "7000: Medium error, data unreadable, do not reassign"}, 221 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL, 222 "FFF3: Disk media format bad"}, 223 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL, 224 "3002: Addressed device failed to respond to selection"}, 225 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL, 226 "3100: Device bus error"}, 227 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL, 228 "3109: IOA timed out a device command"}, 229 {0x04088000, 0, 0, 230 "3120: SCSI bus is not operational"}, 231 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL, 232 "4100: Hard device bus fabric error"}, 233 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL, 234 "9000: IOA reserved area data check"}, 235 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL, 236 "9001: IOA reserved area invalid data pattern"}, 237 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL, 238 "9002: IOA reserved area LRC error"}, 239 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL, 240 "102E: Out of alternate sectors for disk storage"}, 241 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL, 242 "FFF4: Data transfer underlength error"}, 243 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL, 244 "FFF4: Data transfer overlength error"}, 245 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL, 246 "3400: Logical unit failure"}, 247 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL, 248 "FFF4: Device microcode is corrupt"}, 249 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL, 250 "8150: PCI bus error"}, 251 {0x04430000, 1, 0, 252 "Unsupported device bus message received"}, 253 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL, 254 "FFF4: Disk device problem"}, 255 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL, 256 "8150: Permanent IOA failure"}, 257 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL, 258 "3010: Disk device returned wrong response to IOA"}, 259 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL, 260 "8151: IOA microcode error"}, 261 {0x04448500, 0, 0, 262 "Device bus status error"}, 263 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL, 264 "8157: IOA error requiring IOA reset to recover"}, 265 {0x04448700, 0, 0, 266 "ATA device status error"}, 267 {0x04490000, 0, 0, 268 "Message reject received from the device"}, 269 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL, 270 "8008: A permanent cache battery pack failure occurred"}, 271 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL, 272 "9090: Disk unit has been modified after the last known status"}, 273 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL, 274 "9081: IOA detected device error"}, 275 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL, 276 "9082: IOA detected device error"}, 277 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL, 278 "3110: Device bus error, message or command phase"}, 279 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL, 280 "3110: SAS Command / Task Management Function failed"}, 281 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL, 282 "9091: Incorrect hardware configuration change has been detected"}, 283 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL, 284 "9073: Invalid multi-adapter configuration"}, 285 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL, 286 "4010: Incorrect connection between cascaded expanders"}, 287 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL, 288 "4020: Connections exceed IOA design limits"}, 289 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL, 290 "4030: Incorrect multipath connection"}, 291 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL, 292 "4110: Unsupported enclosure function"}, 293 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL, 294 "FFF4: Command to logical unit failed"}, 295 {0x05240000, 1, 0, 296 "Illegal request, invalid request type or request packet"}, 297 {0x05250000, 0, 0, 298 "Illegal request, invalid resource handle"}, 299 {0x05258000, 0, 0, 300 "Illegal request, commands not allowed to this device"}, 301 {0x05258100, 0, 0, 302 "Illegal request, command not allowed to a secondary adapter"}, 303 {0x05260000, 0, 0, 304 "Illegal request, invalid field in parameter list"}, 305 {0x05260100, 0, 0, 306 "Illegal request, parameter not supported"}, 307 {0x05260200, 0, 0, 308 "Illegal request, parameter value invalid"}, 309 {0x052C0000, 0, 0, 310 "Illegal request, command sequence error"}, 311 {0x052C8000, 1, 0, 312 "Illegal request, dual adapter support not enabled"}, 313 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL, 314 "9031: Array protection temporarily suspended, protection resuming"}, 315 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL, 316 "9040: Array protection temporarily suspended, protection resuming"}, 317 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL, 318 "3140: Device bus not ready to ready transition"}, 319 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL, 320 "FFFB: SCSI bus was reset"}, 321 {0x06290500, 0, 0, 322 "FFFE: SCSI bus transition to single ended"}, 323 {0x06290600, 0, 0, 324 "FFFE: SCSI bus transition to LVD"}, 325 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL, 326 "FFFB: SCSI bus was reset by another initiator"}, 327 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL, 328 "3029: A device replacement has occurred"}, 329 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL, 330 "9051: IOA cache data exists for a missing or failed device"}, 331 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL, 332 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"}, 333 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL, 334 "9025: Disk unit is not supported at its physical location"}, 335 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL, 336 "3020: IOA detected a SCSI bus configuration error"}, 337 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL, 338 "3150: SCSI bus configuration error"}, 339 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL, 340 "9074: Asymmetric advanced function disk configuration"}, 341 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL, 342 "4040: Incomplete multipath connection between IOA and enclosure"}, 343 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL, 344 "4041: Incomplete multipath connection between enclosure and device"}, 345 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL, 346 "9075: Incomplete multipath connection between IOA and remote IOA"}, 347 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL, 348 "9076: Configuration error, missing remote IOA"}, 349 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL, 350 "4050: Enclosure does not support a required multipath function"}, 351 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL, 352 "9041: Array protection temporarily suspended"}, 353 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL, 354 "9042: Corrupt array parity detected on specified device"}, 355 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL, 356 "9030: Array no longer protected due to missing or failed disk unit"}, 357 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL, 358 "9071: Link operational transition"}, 359 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL, 360 "9072: Link not operational transition"}, 361 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL, 362 "9032: Array exposed but still protected"}, 363 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1, 364 "70DD: Device forced failed by disrupt device command"}, 365 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL, 366 "4061: Multipath redundancy level got better"}, 367 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL, 368 "4060: Multipath redundancy level got worse"}, 369 {0x07270000, 0, 0, 370 "Failure due to other device"}, 371 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL, 372 "9008: IOA does not support functions expected by devices"}, 373 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL, 374 "9010: Cache data associated with attached devices cannot be found"}, 375 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL, 376 "9011: Cache data belongs to devices other than those attached"}, 377 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL, 378 "9020: Array missing 2 or more devices with only 1 device present"}, 379 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL, 380 "9021: Array missing 2 or more devices with 2 or more devices present"}, 381 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL, 382 "9022: Exposed array is missing a required device"}, 383 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL, 384 "9023: Array member(s) not at required physical locations"}, 385 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL, 386 "9024: Array not functional due to present hardware configuration"}, 387 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL, 388 "9026: Array not functional due to present hardware configuration"}, 389 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL, 390 "9027: Array is missing a device and parity is out of sync"}, 391 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL, 392 "9028: Maximum number of arrays already exist"}, 393 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL, 394 "9050: Required cache data cannot be located for a disk unit"}, 395 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL, 396 "9052: Cache data exists for a device that has been modified"}, 397 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL, 398 "9054: IOA resources not available due to previous problems"}, 399 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL, 400 "9092: Disk unit requires initialization before use"}, 401 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL, 402 "9029: Incorrect hardware configuration change has been detected"}, 403 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL, 404 "9060: One or more disk pairs are missing from an array"}, 405 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL, 406 "9061: One or more disks are missing from an array"}, 407 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL, 408 "9062: One or more disks are missing from an array"}, 409 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL, 410 "9063: Maximum number of functional arrays has been exceeded"}, 411 {0x0B260000, 0, 0, 412 "Aborted command, invalid descriptor"}, 413 {0x0B5A0000, 0, 0, 414 "Command terminated by host"} 415}; 416 417static const struct ipr_ses_table_entry ipr_ses_table[] = { 418 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, 419 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, 420 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ 421 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ 422 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ 423 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ 424 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, 425 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, 426 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 427 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 428 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, 429 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, 430 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } 431}; 432 433/* 434 * Function Prototypes 435 */ 436static int ipr_reset_alert(struct ipr_cmnd *); 437static void ipr_process_ccn(struct ipr_cmnd *); 438static void ipr_process_error(struct ipr_cmnd *); 439static void ipr_reset_ioa_job(struct ipr_cmnd *); 440static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, 441 enum ipr_shutdown_type); 442 443#ifdef CONFIG_SCSI_IPR_TRACE 444/** 445 * ipr_trc_hook - Add a trace entry to the driver trace 446 * @ipr_cmd: ipr command struct 447 * @type: trace type 448 * @add_data: additional data 449 * 450 * Return value: 451 * none 452 **/ 453static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, 454 u8 type, u32 add_data) 455{ 456 struct ipr_trace_entry *trace_entry; 457 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 458 459 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++]; 460 trace_entry->time = jiffies; 461 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; 462 trace_entry->type = type; 463 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command; 464 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff; 465 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; 466 trace_entry->u.add_data = add_data; 467} 468#else 469#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0) 470#endif 471 472/** 473 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse 474 * @ipr_cmd: ipr command struct 475 * 476 * Return value: 477 * none 478 **/ 479static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 480{ 481 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 482 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 483 484 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 485 ioarcb->write_data_transfer_length = 0; 486 ioarcb->read_data_transfer_length = 0; 487 ioarcb->write_ioadl_len = 0; 488 ioarcb->read_ioadl_len = 0; 489 ioasa->ioasc = 0; 490 ioasa->residual_data_len = 0; 491 ioasa->u.gata.status = 0; 492 493 ipr_cmd->scsi_cmd = NULL; 494 ipr_cmd->qc = NULL; 495 ipr_cmd->sense_buffer[0] = 0; 496 ipr_cmd->dma_use_sg = 0; 497} 498 499/** 500 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block 501 * @ipr_cmd: ipr command struct 502 * 503 * Return value: 504 * none 505 **/ 506static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 507{ 508 ipr_reinit_ipr_cmnd(ipr_cmd); 509 ipr_cmd->u.scratch = 0; 510 ipr_cmd->sibling = NULL; 511 init_timer(&ipr_cmd->timer); 512} 513 514/** 515 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block 516 * @ioa_cfg: ioa config struct 517 * 518 * Return value: 519 * pointer to ipr command struct 520 **/ 521static 522struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) 523{ 524 struct ipr_cmnd *ipr_cmd; 525 526 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue); 527 list_del(&ipr_cmd->queue); 528 ipr_init_ipr_cmnd(ipr_cmd); 529 530 return ipr_cmd; 531} 532 533/** 534 * ipr_unmap_sglist - Unmap scatterlist if mapped 535 * @ioa_cfg: ioa config struct 536 * @ipr_cmd: ipr command struct 537 * 538 * Return value: 539 * nothing 540 **/ 541static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg, 542 struct ipr_cmnd *ipr_cmd) 543{ 544 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 545 546 if (ipr_cmd->dma_use_sg) { 547 if (scsi_cmd->use_sg > 0) { 548 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer, 549 scsi_cmd->use_sg, 550 scsi_cmd->sc_data_direction); 551 } else { 552 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle, 553 scsi_cmd->request_bufflen, 554 scsi_cmd->sc_data_direction); 555 } 556 } 557} 558 559/** 560 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts 561 * @ioa_cfg: ioa config struct 562 * @clr_ints: interrupts to clear 563 * 564 * This function masks all interrupts on the adapter, then clears the 565 * interrupts specified in the mask 566 * 567 * Return value: 568 * none 569 **/ 570static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, 571 u32 clr_ints) 572{ 573 volatile u32 int_reg; 574 575 /* Stop new interrupts */ 576 ioa_cfg->allow_interrupts = 0; 577 578 /* Set interrupt mask to stop all new interrupts */ 579 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); 580 581 /* Clear any pending interrupts */ 582 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg); 583 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 584} 585 586/** 587 * ipr_save_pcix_cmd_reg - Save PCI-X command register 588 * @ioa_cfg: ioa config struct 589 * 590 * Return value: 591 * 0 on success / -EIO on failure 592 **/ 593static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 594{ 595 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 596 597 if (pcix_cmd_reg == 0) 598 return 0; 599 600 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 601 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 602 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 603 return -EIO; 604 } 605 606 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; 607 return 0; 608} 609 610/** 611 * ipr_set_pcix_cmd_reg - Setup PCI-X command register 612 * @ioa_cfg: ioa config struct 613 * 614 * Return value: 615 * 0 on success / -EIO on failure 616 **/ 617static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 618{ 619 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 620 621 if (pcix_cmd_reg) { 622 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 623 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 624 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); 625 return -EIO; 626 } 627 } 628 629 return 0; 630} 631 632/** 633 * ipr_sata_eh_done - done function for aborted SATA commands 634 * @ipr_cmd: ipr command struct 635 * 636 * This function is invoked for ops generated to SATA 637 * devices which are being aborted. 638 * 639 * Return value: 640 * none 641 **/ 642static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd) 643{ 644 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 645 struct ata_queued_cmd *qc = ipr_cmd->qc; 646 struct ipr_sata_port *sata_port = qc->ap->private_data; 647 648 qc->err_mask |= AC_ERR_OTHER; 649 sata_port->ioasa.status |= ATA_BUSY; 650 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 651 ata_qc_complete(qc); 652} 653 654/** 655 * ipr_scsi_eh_done - mid-layer done function for aborted ops 656 * @ipr_cmd: ipr command struct 657 * 658 * This function is invoked by the interrupt handler for 659 * ops generated by the SCSI mid-layer which are being aborted. 660 * 661 * Return value: 662 * none 663 **/ 664static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 665{ 666 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 667 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 668 669 scsi_cmd->result |= (DID_ERROR << 16); 670 671 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 672 scsi_cmd->scsi_done(scsi_cmd); 673 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 674} 675 676/** 677 * ipr_fail_all_ops - Fails all outstanding ops. 678 * @ioa_cfg: ioa config struct 679 * 680 * This function fails all outstanding ops. 681 * 682 * Return value: 683 * none 684 **/ 685static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) 686{ 687 struct ipr_cmnd *ipr_cmd, *temp; 688 689 ENTER; 690 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) { 691 list_del(&ipr_cmd->queue); 692 693 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); 694 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID); 695 696 if (ipr_cmd->scsi_cmd) 697 ipr_cmd->done = ipr_scsi_eh_done; 698 else if (ipr_cmd->qc) 699 ipr_cmd->done = ipr_sata_eh_done; 700 701 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET); 702 del_timer(&ipr_cmd->timer); 703 ipr_cmd->done(ipr_cmd); 704 } 705 706 LEAVE; 707} 708 709/** 710 * ipr_do_req - Send driver initiated requests. 711 * @ipr_cmd: ipr command struct 712 * @done: done function 713 * @timeout_func: timeout function 714 * @timeout: timeout value 715 * 716 * This function sends the specified command to the adapter with the 717 * timeout given. The done function is invoked on command completion. 718 * 719 * Return value: 720 * none 721 **/ 722static void ipr_do_req(struct ipr_cmnd *ipr_cmd, 723 void (*done) (struct ipr_cmnd *), 724 void (*timeout_func) (struct ipr_cmnd *), u32 timeout) 725{ 726 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 727 728 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 729 730 ipr_cmd->done = done; 731 732 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 733 ipr_cmd->timer.expires = jiffies + timeout; 734 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func; 735 736 add_timer(&ipr_cmd->timer); 737 738 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); 739 740 mb(); 741 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 742 ioa_cfg->regs.ioarrin_reg); 743} 744 745/** 746 * ipr_internal_cmd_done - Op done function for an internally generated op. 747 * @ipr_cmd: ipr command struct 748 * 749 * This function is the op done function for an internally generated, 750 * blocking op. It simply wakes the sleeping thread. 751 * 752 * Return value: 753 * none 754 **/ 755static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) 756{ 757 if (ipr_cmd->sibling) 758 ipr_cmd->sibling = NULL; 759 else 760 complete(&ipr_cmd->completion); 761} 762 763/** 764 * ipr_send_blocking_cmd - Send command and sleep on its completion. 765 * @ipr_cmd: ipr command struct 766 * @timeout_func: function to invoke if command times out 767 * @timeout: timeout 768 * 769 * Return value: 770 * none 771 **/ 772static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, 773 void (*timeout_func) (struct ipr_cmnd *ipr_cmd), 774 u32 timeout) 775{ 776 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 777 778 init_completion(&ipr_cmd->completion); 779 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); 780 781 spin_unlock_irq(ioa_cfg->host->host_lock); 782 wait_for_completion(&ipr_cmd->completion); 783 spin_lock_irq(ioa_cfg->host->host_lock); 784} 785 786/** 787 * ipr_send_hcam - Send an HCAM to the adapter. 788 * @ioa_cfg: ioa config struct 789 * @type: HCAM type 790 * @hostrcb: hostrcb struct 791 * 792 * This function will send a Host Controlled Async command to the adapter. 793 * If HCAMs are currently not allowed to be issued to the adapter, it will 794 * place the hostrcb on the free queue. 795 * 796 * Return value: 797 * none 798 **/ 799static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, 800 struct ipr_hostrcb *hostrcb) 801{ 802 struct ipr_cmnd *ipr_cmd; 803 struct ipr_ioarcb *ioarcb; 804 805 if (ioa_cfg->allow_cmds) { 806 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 807 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 808 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); 809 810 ipr_cmd->u.hostrcb = hostrcb; 811 ioarcb = &ipr_cmd->ioarcb; 812 813 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 814 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; 815 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; 816 ioarcb->cmd_pkt.cdb[1] = type; 817 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; 818 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; 819 820 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam)); 821 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 822 ipr_cmd->ioadl[0].flags_and_data_len = 823 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam)); 824 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma); 825 826 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) 827 ipr_cmd->done = ipr_process_ccn; 828 else 829 ipr_cmd->done = ipr_process_error; 830 831 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); 832 833 mb(); 834 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 835 ioa_cfg->regs.ioarrin_reg); 836 } else { 837 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 838 } 839} 840 841/** 842 * ipr_init_res_entry - Initialize a resource entry struct. 843 * @res: resource entry struct 844 * 845 * Return value: 846 * none 847 **/ 848static void ipr_init_res_entry(struct ipr_resource_entry *res) 849{ 850 res->needs_sync_complete = 0; 851 res->in_erp = 0; 852 res->add_to_ml = 0; 853 res->del_from_ml = 0; 854 res->resetting_device = 0; 855 res->sdev = NULL; 856 res->sata_port = NULL; 857} 858 859/** 860 * ipr_handle_config_change - Handle a config change from the adapter 861 * @ioa_cfg: ioa config struct 862 * @hostrcb: hostrcb 863 * 864 * Return value: 865 * none 866 **/ 867static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, 868 struct ipr_hostrcb *hostrcb) 869{ 870 struct ipr_resource_entry *res = NULL; 871 struct ipr_config_table_entry *cfgte; 872 u32 is_ndn = 1; 873 874 cfgte = &hostrcb->hcam.u.ccn.cfgte; 875 876 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 877 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr, 878 sizeof(cfgte->res_addr))) { 879 is_ndn = 0; 880 break; 881 } 882 } 883 884 if (is_ndn) { 885 if (list_empty(&ioa_cfg->free_res_q)) { 886 ipr_send_hcam(ioa_cfg, 887 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 888 hostrcb); 889 return; 890 } 891 892 res = list_entry(ioa_cfg->free_res_q.next, 893 struct ipr_resource_entry, queue); 894 895 list_del(&res->queue); 896 ipr_init_res_entry(res); 897 list_add_tail(&res->queue, &ioa_cfg->used_res_q); 898 } 899 900 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 901 902 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { 903 if (res->sdev) { 904 res->del_from_ml = 1; 905 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE; 906 if (ioa_cfg->allow_ml_add_del) 907 schedule_work(&ioa_cfg->work_q); 908 } else 909 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 910 } else if (!res->sdev) { 911 res->add_to_ml = 1; 912 if (ioa_cfg->allow_ml_add_del) 913 schedule_work(&ioa_cfg->work_q); 914 } 915 916 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 917} 918 919/** 920 * ipr_process_ccn - Op done function for a CCN. 921 * @ipr_cmd: ipr command struct 922 * 923 * This function is the op done function for a configuration 924 * change notification host controlled async from the adapter. 925 * 926 * Return value: 927 * none 928 **/ 929static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) 930{ 931 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 932 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 933 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 934 935 list_del(&hostrcb->queue); 936 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 937 938 if (ioasc) { 939 if (ioasc != IPR_IOASC_IOA_WAS_RESET) 940 dev_err(&ioa_cfg->pdev->dev, 941 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 942 943 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 944 } else { 945 ipr_handle_config_change(ioa_cfg, hostrcb); 946 } 947} 948 949/** 950 * ipr_log_vpd - Log the passed VPD to the error log. 951 * @vpd: vendor/product id/sn struct 952 * 953 * Return value: 954 * none 955 **/ 956static void ipr_log_vpd(struct ipr_vpd *vpd) 957{ 958 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN 959 + IPR_SERIAL_NUM_LEN]; 960 961 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 962 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id, 963 IPR_PROD_ID_LEN); 964 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; 965 ipr_err("Vendor/Product ID: %s\n", buffer); 966 967 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN); 968 buffer[IPR_SERIAL_NUM_LEN] = '\0'; 969 ipr_err(" Serial Number: %s\n", buffer); 970} 971 972/** 973 * ipr_log_ext_vpd - Log the passed extended VPD to the error log. 974 * @vpd: vendor/product id/sn/wwn struct 975 * 976 * Return value: 977 * none 978 **/ 979static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd) 980{ 981 ipr_log_vpd(&vpd->vpd); 982 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]), 983 be32_to_cpu(vpd->wwid[1])); 984} 985 986/** 987 * ipr_log_enhanced_cache_error - Log a cache error. 988 * @ioa_cfg: ioa config struct 989 * @hostrcb: hostrcb struct 990 * 991 * Return value: 992 * none 993 **/ 994static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg, 995 struct ipr_hostrcb *hostrcb) 996{ 997 struct ipr_hostrcb_type_12_error *error = 998 &hostrcb->hcam.u.error.u.type_12_error; 999 1000 ipr_err("-----Current Configuration-----\n"); 1001 ipr_err("Cache Directory Card Information:\n"); 1002 ipr_log_ext_vpd(&error->ioa_vpd); 1003 ipr_err("Adapter Card Information:\n"); 1004 ipr_log_ext_vpd(&error->cfc_vpd); 1005 1006 ipr_err("-----Expected Configuration-----\n"); 1007 ipr_err("Cache Directory Card Information:\n"); 1008 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd); 1009 ipr_err("Adapter Card Information:\n"); 1010 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd); 1011 1012 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1013 be32_to_cpu(error->ioa_data[0]), 1014 be32_to_cpu(error->ioa_data[1]), 1015 be32_to_cpu(error->ioa_data[2])); 1016} 1017 1018/** 1019 * ipr_log_cache_error - Log a cache error. 1020 * @ioa_cfg: ioa config struct 1021 * @hostrcb: hostrcb struct 1022 * 1023 * Return value: 1024 * none 1025 **/ 1026static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1027 struct ipr_hostrcb *hostrcb) 1028{ 1029 struct ipr_hostrcb_type_02_error *error = 1030 &hostrcb->hcam.u.error.u.type_02_error; 1031 1032 ipr_err("-----Current Configuration-----\n"); 1033 ipr_err("Cache Directory Card Information:\n"); 1034 ipr_log_vpd(&error->ioa_vpd); 1035 ipr_err("Adapter Card Information:\n"); 1036 ipr_log_vpd(&error->cfc_vpd); 1037 1038 ipr_err("-----Expected Configuration-----\n"); 1039 ipr_err("Cache Directory Card Information:\n"); 1040 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd); 1041 ipr_err("Adapter Card Information:\n"); 1042 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd); 1043 1044 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1045 be32_to_cpu(error->ioa_data[0]), 1046 be32_to_cpu(error->ioa_data[1]), 1047 be32_to_cpu(error->ioa_data[2])); 1048} 1049 1050/** 1051 * ipr_log_enhanced_config_error - Log a configuration error. 1052 * @ioa_cfg: ioa config struct 1053 * @hostrcb: hostrcb struct 1054 * 1055 * Return value: 1056 * none 1057 **/ 1058static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg, 1059 struct ipr_hostrcb *hostrcb) 1060{ 1061 int errors_logged, i; 1062 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry; 1063 struct ipr_hostrcb_type_13_error *error; 1064 1065 error = &hostrcb->hcam.u.error.u.type_13_error; 1066 errors_logged = be32_to_cpu(error->errors_logged); 1067 1068 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1069 be32_to_cpu(error->errors_detected), errors_logged); 1070 1071 dev_entry = error->dev; 1072 1073 for (i = 0; i < errors_logged; i++, dev_entry++) { 1074 ipr_err_separator; 1075 1076 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1077 ipr_log_ext_vpd(&dev_entry->vpd); 1078 1079 ipr_err("-----New Device Information-----\n"); 1080 ipr_log_ext_vpd(&dev_entry->new_vpd); 1081 1082 ipr_err("Cache Directory Card Information:\n"); 1083 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1084 1085 ipr_err("Adapter Card Information:\n"); 1086 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1087 } 1088} 1089 1090/** 1091 * ipr_log_config_error - Log a configuration error. 1092 * @ioa_cfg: ioa config struct 1093 * @hostrcb: hostrcb struct 1094 * 1095 * Return value: 1096 * none 1097 **/ 1098static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, 1099 struct ipr_hostrcb *hostrcb) 1100{ 1101 int errors_logged, i; 1102 struct ipr_hostrcb_device_data_entry *dev_entry; 1103 struct ipr_hostrcb_type_03_error *error; 1104 1105 error = &hostrcb->hcam.u.error.u.type_03_error; 1106 errors_logged = be32_to_cpu(error->errors_logged); 1107 1108 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1109 be32_to_cpu(error->errors_detected), errors_logged); 1110 1111 dev_entry = error->dev; 1112 1113 for (i = 0; i < errors_logged; i++, dev_entry++) { 1114 ipr_err_separator; 1115 1116 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1117 ipr_log_vpd(&dev_entry->vpd); 1118 1119 ipr_err("-----New Device Information-----\n"); 1120 ipr_log_vpd(&dev_entry->new_vpd); 1121 1122 ipr_err("Cache Directory Card Information:\n"); 1123 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd); 1124 1125 ipr_err("Adapter Card Information:\n"); 1126 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd); 1127 1128 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", 1129 be32_to_cpu(dev_entry->ioa_data[0]), 1130 be32_to_cpu(dev_entry->ioa_data[1]), 1131 be32_to_cpu(dev_entry->ioa_data[2]), 1132 be32_to_cpu(dev_entry->ioa_data[3]), 1133 be32_to_cpu(dev_entry->ioa_data[4])); 1134 } 1135} 1136 1137/** 1138 * ipr_log_enhanced_array_error - Log an array configuration error. 1139 * @ioa_cfg: ioa config struct 1140 * @hostrcb: hostrcb struct 1141 * 1142 * Return value: 1143 * none 1144 **/ 1145static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg, 1146 struct ipr_hostrcb *hostrcb) 1147{ 1148 int i, num_entries; 1149 struct ipr_hostrcb_type_14_error *error; 1150 struct ipr_hostrcb_array_data_entry_enhanced *array_entry; 1151 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1152 1153 error = &hostrcb->hcam.u.error.u.type_14_error; 1154 1155 ipr_err_separator; 1156 1157 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1158 error->protection_level, 1159 ioa_cfg->host->host_no, 1160 error->last_func_vset_res_addr.bus, 1161 error->last_func_vset_res_addr.target, 1162 error->last_func_vset_res_addr.lun); 1163 1164 ipr_err_separator; 1165 1166 array_entry = error->array_member; 1167 num_entries = min_t(u32, be32_to_cpu(error->num_entries), 1168 sizeof(error->array_member)); 1169 1170 for (i = 0; i < num_entries; i++, array_entry++) { 1171 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1172 continue; 1173 1174 if (be32_to_cpu(error->exposed_mode_adn) == i) 1175 ipr_err("Exposed Array Member %d:\n", i); 1176 else 1177 ipr_err("Array Member %d:\n", i); 1178 1179 ipr_log_ext_vpd(&array_entry->vpd); 1180 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1181 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1182 "Expected Location"); 1183 1184 ipr_err_separator; 1185 } 1186} 1187 1188/** 1189 * ipr_log_array_error - Log an array configuration error. 1190 * @ioa_cfg: ioa config struct 1191 * @hostrcb: hostrcb struct 1192 * 1193 * Return value: 1194 * none 1195 **/ 1196static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, 1197 struct ipr_hostrcb *hostrcb) 1198{ 1199 int i; 1200 struct ipr_hostrcb_type_04_error *error; 1201 struct ipr_hostrcb_array_data_entry *array_entry; 1202 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1203 1204 error = &hostrcb->hcam.u.error.u.type_04_error; 1205 1206 ipr_err_separator; 1207 1208 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1209 error->protection_level, 1210 ioa_cfg->host->host_no, 1211 error->last_func_vset_res_addr.bus, 1212 error->last_func_vset_res_addr.target, 1213 error->last_func_vset_res_addr.lun); 1214 1215 ipr_err_separator; 1216 1217 array_entry = error->array_member; 1218 1219 for (i = 0; i < 18; i++) { 1220 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1221 continue; 1222 1223 if (be32_to_cpu(error->exposed_mode_adn) == i) 1224 ipr_err("Exposed Array Member %d:\n", i); 1225 else 1226 ipr_err("Array Member %d:\n", i); 1227 1228 ipr_log_vpd(&array_entry->vpd); 1229 1230 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1231 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1232 "Expected Location"); 1233 1234 ipr_err_separator; 1235 1236 if (i == 9) 1237 array_entry = error->array_member2; 1238 else 1239 array_entry++; 1240 } 1241} 1242 1243/** 1244 * ipr_log_hex_data - Log additional hex IOA error data. 1245 * @ioa_cfg: ioa config struct 1246 * @data: IOA error data 1247 * @len: data length 1248 * 1249 * Return value: 1250 * none 1251 **/ 1252static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len) 1253{ 1254 int i; 1255 1256 if (len == 0) 1257 return; 1258 1259 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 1260 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP); 1261 1262 for (i = 0; i < len / 4; i += 4) { 1263 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 1264 be32_to_cpu(data[i]), 1265 be32_to_cpu(data[i+1]), 1266 be32_to_cpu(data[i+2]), 1267 be32_to_cpu(data[i+3])); 1268 } 1269} 1270 1271/** 1272 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error. 1273 * @ioa_cfg: ioa config struct 1274 * @hostrcb: hostrcb struct 1275 * 1276 * Return value: 1277 * none 1278 **/ 1279static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1280 struct ipr_hostrcb *hostrcb) 1281{ 1282 struct ipr_hostrcb_type_17_error *error; 1283 1284 error = &hostrcb->hcam.u.error.u.type_17_error; 1285 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1286 1287 ipr_err("%s\n", error->failure_reason); 1288 ipr_err("Remote Adapter VPD:\n"); 1289 ipr_log_ext_vpd(&error->vpd); 1290 ipr_log_hex_data(ioa_cfg, error->data, 1291 be32_to_cpu(hostrcb->hcam.length) - 1292 (offsetof(struct ipr_hostrcb_error, u) + 1293 offsetof(struct ipr_hostrcb_type_17_error, data))); 1294} 1295 1296/** 1297 * ipr_log_dual_ioa_error - Log a dual adapter error. 1298 * @ioa_cfg: ioa config struct 1299 * @hostrcb: hostrcb struct 1300 * 1301 * Return value: 1302 * none 1303 **/ 1304static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1305 struct ipr_hostrcb *hostrcb) 1306{ 1307 struct ipr_hostrcb_type_07_error *error; 1308 1309 error = &hostrcb->hcam.u.error.u.type_07_error; 1310 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1311 1312 ipr_err("%s\n", error->failure_reason); 1313 ipr_err("Remote Adapter VPD:\n"); 1314 ipr_log_vpd(&error->vpd); 1315 ipr_log_hex_data(ioa_cfg, error->data, 1316 be32_to_cpu(hostrcb->hcam.length) - 1317 (offsetof(struct ipr_hostrcb_error, u) + 1318 offsetof(struct ipr_hostrcb_type_07_error, data))); 1319} 1320 1321static const struct { 1322 u8 active; 1323 char *desc; 1324} path_active_desc[] = { 1325 { IPR_PATH_NO_INFO, "Path" }, 1326 { IPR_PATH_ACTIVE, "Active path" }, 1327 { IPR_PATH_NOT_ACTIVE, "Inactive path" } 1328}; 1329 1330static const struct { 1331 u8 state; 1332 char *desc; 1333} path_state_desc[] = { 1334 { IPR_PATH_STATE_NO_INFO, "has no path state information available" }, 1335 { IPR_PATH_HEALTHY, "is healthy" }, 1336 { IPR_PATH_DEGRADED, "is degraded" }, 1337 { IPR_PATH_FAILED, "is failed" } 1338}; 1339 1340/** 1341 * ipr_log_fabric_path - Log a fabric path error 1342 * @hostrcb: hostrcb struct 1343 * @fabric: fabric descriptor 1344 * 1345 * Return value: 1346 * none 1347 **/ 1348static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb, 1349 struct ipr_hostrcb_fabric_desc *fabric) 1350{ 1351 int i, j; 1352 u8 path_state = fabric->path_state; 1353 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 1354 u8 state = path_state & IPR_PATH_STATE_MASK; 1355 1356 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 1357 if (path_active_desc[i].active != active) 1358 continue; 1359 1360 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 1361 if (path_state_desc[j].state != state) 1362 continue; 1363 1364 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) { 1365 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n", 1366 path_active_desc[i].desc, path_state_desc[j].desc, 1367 fabric->ioa_port); 1368 } else if (fabric->cascaded_expander == 0xff) { 1369 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n", 1370 path_active_desc[i].desc, path_state_desc[j].desc, 1371 fabric->ioa_port, fabric->phy); 1372 } else if (fabric->phy == 0xff) { 1373 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n", 1374 path_active_desc[i].desc, path_state_desc[j].desc, 1375 fabric->ioa_port, fabric->cascaded_expander); 1376 } else { 1377 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n", 1378 path_active_desc[i].desc, path_state_desc[j].desc, 1379 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1380 } 1381 return; 1382 } 1383 } 1384 1385 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state, 1386 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1387} 1388 1389static const struct { 1390 u8 type; 1391 char *desc; 1392} path_type_desc[] = { 1393 { IPR_PATH_CFG_IOA_PORT, "IOA port" }, 1394 { IPR_PATH_CFG_EXP_PORT, "Expander port" }, 1395 { IPR_PATH_CFG_DEVICE_PORT, "Device port" }, 1396 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" } 1397}; 1398 1399static const struct { 1400 u8 status; 1401 char *desc; 1402} path_status_desc[] = { 1403 { IPR_PATH_CFG_NO_PROB, "Functional" }, 1404 { IPR_PATH_CFG_DEGRADED, "Degraded" }, 1405 { IPR_PATH_CFG_FAILED, "Failed" }, 1406 { IPR_PATH_CFG_SUSPECT, "Suspect" }, 1407 { IPR_PATH_NOT_DETECTED, "Missing" }, 1408 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" } 1409}; 1410 1411static const char *link_rate[] = { 1412 "unknown", 1413 "disabled", 1414 "phy reset problem", 1415 "spinup hold", 1416 "port selector", 1417 "unknown", 1418 "unknown", 1419 "unknown", 1420 "1.5Gbps", 1421 "3.0Gbps", 1422 "unknown", 1423 "unknown", 1424 "unknown", 1425 "unknown", 1426 "unknown", 1427 "unknown" 1428}; 1429 1430/** 1431 * ipr_log_path_elem - Log a fabric path element. 1432 * @hostrcb: hostrcb struct 1433 * @cfg: fabric path element struct 1434 * 1435 * Return value: 1436 * none 1437 **/ 1438static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb, 1439 struct ipr_hostrcb_config_element *cfg) 1440{ 1441 int i, j; 1442 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 1443 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 1444 1445 if (type == IPR_PATH_CFG_NOT_EXIST) 1446 return; 1447 1448 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 1449 if (path_type_desc[i].type != type) 1450 continue; 1451 1452 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 1453 if (path_status_desc[j].status != status) 1454 continue; 1455 1456 if (type == IPR_PATH_CFG_IOA_PORT) { 1457 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n", 1458 path_status_desc[j].desc, path_type_desc[i].desc, 1459 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1460 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1461 } else { 1462 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) { 1463 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n", 1464 path_status_desc[j].desc, path_type_desc[i].desc, 1465 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1466 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1467 } else if (cfg->cascaded_expander == 0xff) { 1468 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, " 1469 "WWN=%08X%08X\n", path_status_desc[j].desc, 1470 path_type_desc[i].desc, cfg->phy, 1471 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1472 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1473 } else if (cfg->phy == 0xff) { 1474 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, " 1475 "WWN=%08X%08X\n", path_status_desc[j].desc, 1476 path_type_desc[i].desc, cfg->cascaded_expander, 1477 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1478 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1479 } else { 1480 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s " 1481 "WWN=%08X%08X\n", path_status_desc[j].desc, 1482 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy, 1483 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1484 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1485 } 1486 } 1487 return; 1488 } 1489 } 1490 1491 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s " 1492 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy, 1493 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1494 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1495} 1496 1497/** 1498 * ipr_log_fabric_error - Log a fabric error. 1499 * @ioa_cfg: ioa config struct 1500 * @hostrcb: hostrcb struct 1501 * 1502 * Return value: 1503 * none 1504 **/ 1505static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 1506 struct ipr_hostrcb *hostrcb) 1507{ 1508 struct ipr_hostrcb_type_20_error *error; 1509 struct ipr_hostrcb_fabric_desc *fabric; 1510 struct ipr_hostrcb_config_element *cfg; 1511 int i, add_len; 1512 1513 error = &hostrcb->hcam.u.error.u.type_20_error; 1514 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1515 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 1516 1517 add_len = be32_to_cpu(hostrcb->hcam.length) - 1518 (offsetof(struct ipr_hostrcb_error, u) + 1519 offsetof(struct ipr_hostrcb_type_20_error, desc)); 1520 1521 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 1522 ipr_log_fabric_path(hostrcb, fabric); 1523 for_each_fabric_cfg(fabric, cfg) 1524 ipr_log_path_elem(hostrcb, cfg); 1525 1526 add_len -= be16_to_cpu(fabric->length); 1527 fabric = (struct ipr_hostrcb_fabric_desc *) 1528 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 1529 } 1530 1531 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len); 1532} 1533 1534/** 1535 * ipr_log_generic_error - Log an adapter error. 1536 * @ioa_cfg: ioa config struct 1537 * @hostrcb: hostrcb struct 1538 * 1539 * Return value: 1540 * none 1541 **/ 1542static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, 1543 struct ipr_hostrcb *hostrcb) 1544{ 1545 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data, 1546 be32_to_cpu(hostrcb->hcam.length)); 1547} 1548 1549/** 1550 * ipr_get_error - Find the specfied IOASC in the ipr_error_table. 1551 * @ioasc: IOASC 1552 * 1553 * This function will return the index of into the ipr_error_table 1554 * for the specified IOASC. If the IOASC is not in the table, 1555 * 0 will be returned, which points to the entry used for unknown errors. 1556 * 1557 * Return value: 1558 * index into the ipr_error_table 1559 **/ 1560static u32 ipr_get_error(u32 ioasc) 1561{ 1562 int i; 1563 1564 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) 1565 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK)) 1566 return i; 1567 1568 return 0; 1569} 1570 1571/** 1572 * ipr_handle_log_data - Log an adapter error. 1573 * @ioa_cfg: ioa config struct 1574 * @hostrcb: hostrcb struct 1575 * 1576 * This function logs an adapter error to the system. 1577 * 1578 * Return value: 1579 * none 1580 **/ 1581static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 1582 struct ipr_hostrcb *hostrcb) 1583{ 1584 u32 ioasc; 1585 int error_index; 1586 1587 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) 1588 return; 1589 1590 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) 1591 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); 1592 1593 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc); 1594 1595 if (ioasc == IPR_IOASC_BUS_WAS_RESET || 1596 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) { 1597 /* Tell the midlayer we had a bus reset so it will handle the UA properly */ 1598 scsi_report_bus_reset(ioa_cfg->host, 1599 hostrcb->hcam.u.error.failing_dev_res_addr.bus); 1600 } 1601 1602 error_index = ipr_get_error(ioasc); 1603 1604 if (!ipr_error_table[error_index].log_hcam) 1605 return; 1606 1607 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error); 1608 1609 /* Set indication we have logged an error */ 1610 ioa_cfg->errors_logged++; 1611 1612 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam) 1613 return; 1614 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw)) 1615 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw)); 1616 1617 switch (hostrcb->hcam.overlay_id) { 1618 case IPR_HOST_RCB_OVERLAY_ID_2: 1619 ipr_log_cache_error(ioa_cfg, hostrcb); 1620 break; 1621 case IPR_HOST_RCB_OVERLAY_ID_3: 1622 ipr_log_config_error(ioa_cfg, hostrcb); 1623 break; 1624 case IPR_HOST_RCB_OVERLAY_ID_4: 1625 case IPR_HOST_RCB_OVERLAY_ID_6: 1626 ipr_log_array_error(ioa_cfg, hostrcb); 1627 break; 1628 case IPR_HOST_RCB_OVERLAY_ID_7: 1629 ipr_log_dual_ioa_error(ioa_cfg, hostrcb); 1630 break; 1631 case IPR_HOST_RCB_OVERLAY_ID_12: 1632 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb); 1633 break; 1634 case IPR_HOST_RCB_OVERLAY_ID_13: 1635 ipr_log_enhanced_config_error(ioa_cfg, hostrcb); 1636 break; 1637 case IPR_HOST_RCB_OVERLAY_ID_14: 1638 case IPR_HOST_RCB_OVERLAY_ID_16: 1639 ipr_log_enhanced_array_error(ioa_cfg, hostrcb); 1640 break; 1641 case IPR_HOST_RCB_OVERLAY_ID_17: 1642 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb); 1643 break; 1644 case IPR_HOST_RCB_OVERLAY_ID_20: 1645 ipr_log_fabric_error(ioa_cfg, hostrcb); 1646 break; 1647 case IPR_HOST_RCB_OVERLAY_ID_1: 1648 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: 1649 default: 1650 ipr_log_generic_error(ioa_cfg, hostrcb); 1651 break; 1652 } 1653} 1654 1655/** 1656 * ipr_process_error - Op done function for an adapter error log. 1657 * @ipr_cmd: ipr command struct 1658 * 1659 * This function is the op done function for an error log host 1660 * controlled async from the adapter. It will log the error and 1661 * send the HCAM back to the adapter. 1662 * 1663 * Return value: 1664 * none 1665 **/ 1666static void ipr_process_error(struct ipr_cmnd *ipr_cmd) 1667{ 1668 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1669 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 1670 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 1671 1672 list_del(&hostrcb->queue); 1673 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 1674 1675 if (!ioasc) { 1676 ipr_handle_log_data(ioa_cfg, hostrcb); 1677 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) { 1678 dev_err(&ioa_cfg->pdev->dev, 1679 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 1680 } 1681 1682 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 1683} 1684 1685/** 1686 * ipr_timeout - An internally generated op has timed out. 1687 * @ipr_cmd: ipr command struct 1688 * 1689 * This function blocks host requests and initiates an 1690 * adapter reset. 1691 * 1692 * Return value: 1693 * none 1694 **/ 1695static void ipr_timeout(struct ipr_cmnd *ipr_cmd) 1696{ 1697 unsigned long lock_flags = 0; 1698 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1699 1700 ENTER; 1701 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1702 1703 ioa_cfg->errors_logged++; 1704 dev_err(&ioa_cfg->pdev->dev, 1705 "Adapter being reset due to command timeout.\n"); 1706 1707 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 1708 ioa_cfg->sdt_state = GET_DUMP; 1709 1710 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) 1711 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 1712 1713 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1714 LEAVE; 1715} 1716 1717/** 1718 * ipr_oper_timeout - Adapter timed out transitioning to operational 1719 * @ipr_cmd: ipr command struct 1720 * 1721 * This function blocks host requests and initiates an 1722 * adapter reset. 1723 * 1724 * Return value: 1725 * none 1726 **/ 1727static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) 1728{ 1729 unsigned long lock_flags = 0; 1730 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1731 1732 ENTER; 1733 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1734 1735 ioa_cfg->errors_logged++; 1736 dev_err(&ioa_cfg->pdev->dev, 1737 "Adapter timed out transitioning to operational.\n"); 1738 1739 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 1740 ioa_cfg->sdt_state = GET_DUMP; 1741 1742 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { 1743 if (ipr_fastfail) 1744 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 1745 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 1746 } 1747 1748 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1749 LEAVE; 1750} 1751 1752/** 1753 * ipr_reset_reload - Reset/Reload the IOA 1754 * @ioa_cfg: ioa config struct 1755 * @shutdown_type: shutdown type 1756 * 1757 * This function resets the adapter and re-initializes it. 1758 * This function assumes that all new host commands have been stopped. 1759 * Return value: 1760 * SUCCESS / FAILED 1761 **/ 1762static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg, 1763 enum ipr_shutdown_type shutdown_type) 1764{ 1765 if (!ioa_cfg->in_reset_reload) 1766 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 1767 1768 spin_unlock_irq(ioa_cfg->host->host_lock); 1769 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 1770 spin_lock_irq(ioa_cfg->host->host_lock); 1771 1772 /* If we got hit with a host reset while we were already resetting 1773 the adapter for some reason, and the reset failed. */ 1774 if (ioa_cfg->ioa_is_dead) { 1775 ipr_trace; 1776 return FAILED; 1777 } 1778 1779 return SUCCESS; 1780} 1781 1782/** 1783 * ipr_find_ses_entry - Find matching SES in SES table 1784 * @res: resource entry struct of SES 1785 * 1786 * Return value: 1787 * pointer to SES table entry / NULL on failure 1788 **/ 1789static const struct ipr_ses_table_entry * 1790ipr_find_ses_entry(struct ipr_resource_entry *res) 1791{ 1792 int i, j, matches; 1793 const struct ipr_ses_table_entry *ste = ipr_ses_table; 1794 1795 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { 1796 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { 1797 if (ste->compare_product_id_byte[j] == 'X') { 1798 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j]) 1799 matches++; 1800 else 1801 break; 1802 } else 1803 matches++; 1804 } 1805 1806 if (matches == IPR_PROD_ID_LEN) 1807 return ste; 1808 } 1809 1810 return NULL; 1811} 1812 1813/** 1814 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus 1815 * @ioa_cfg: ioa config struct 1816 * @bus: SCSI bus 1817 * @bus_width: bus width 1818 * 1819 * Return value: 1820 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz 1821 * For a 2-byte wide SCSI bus, the maximum transfer speed is 1822 * twice the maximum transfer rate (e.g. for a wide enabled bus, 1823 * max 160MHz = max 320MB/sec). 1824 **/ 1825static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) 1826{ 1827 struct ipr_resource_entry *res; 1828 const struct ipr_ses_table_entry *ste; 1829 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); 1830 1831 /* Loop through each config table entry in the config table buffer */ 1832 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1833 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data))) 1834 continue; 1835 1836 if (bus != res->cfgte.res_addr.bus) 1837 continue; 1838 1839 if (!(ste = ipr_find_ses_entry(res))) 1840 continue; 1841 1842 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); 1843 } 1844 1845 return max_xfer_rate; 1846} 1847 1848/** 1849 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA 1850 * @ioa_cfg: ioa config struct 1851 * @max_delay: max delay in micro-seconds to wait 1852 * 1853 * Waits for an IODEBUG ACK from the IOA, doing busy looping. 1854 * 1855 * Return value: 1856 * 0 on success / other on failure 1857 **/ 1858static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) 1859{ 1860 volatile u32 pcii_reg; 1861 int delay = 1; 1862 1863 /* Read interrupt reg until IOA signals IO Debug Acknowledge */ 1864 while (delay < max_delay) { 1865 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 1866 1867 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) 1868 return 0; 1869 1870 /* udelay cannot be used if delay is more than a few milliseconds */ 1871 if ((delay / 1000) > MAX_UDELAY_MS) 1872 mdelay(delay / 1000); 1873 else 1874 udelay(delay); 1875 1876 delay += delay; 1877 } 1878 return -EIO; 1879} 1880 1881/** 1882 * ipr_get_ldump_data_section - Dump IOA memory 1883 * @ioa_cfg: ioa config struct 1884 * @start_addr: adapter address to dump 1885 * @dest: destination kernel buffer 1886 * @length_in_words: length to dump in 4 byte words 1887 * 1888 * Return value: 1889 * 0 on success / -EIO on failure 1890 **/ 1891static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, 1892 u32 start_addr, 1893 __be32 *dest, u32 length_in_words) 1894{ 1895 volatile u32 temp_pcii_reg; 1896 int i, delay = 0; 1897 1898 /* Write IOA interrupt reg starting LDUMP state */ 1899 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), 1900 ioa_cfg->regs.set_uproc_interrupt_reg); 1901 1902 /* Wait for IO debug acknowledge */ 1903 if (ipr_wait_iodbg_ack(ioa_cfg, 1904 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { 1905 dev_err(&ioa_cfg->pdev->dev, 1906 "IOA dump long data transfer timeout\n"); 1907 return -EIO; 1908 } 1909 1910 /* Signal LDUMP interlocked - clear IO debug ack */ 1911 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1912 ioa_cfg->regs.clr_interrupt_reg); 1913 1914 /* Write Mailbox with starting address */ 1915 writel(start_addr, ioa_cfg->ioa_mailbox); 1916 1917 /* Signal address valid - clear IOA Reset alert */ 1918 writel(IPR_UPROCI_RESET_ALERT, 1919 ioa_cfg->regs.clr_uproc_interrupt_reg); 1920 1921 for (i = 0; i < length_in_words; i++) { 1922 /* Wait for IO debug acknowledge */ 1923 if (ipr_wait_iodbg_ack(ioa_cfg, 1924 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { 1925 dev_err(&ioa_cfg->pdev->dev, 1926 "IOA dump short data transfer timeout\n"); 1927 return -EIO; 1928 } 1929 1930 /* Read data from mailbox and increment destination pointer */ 1931 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); 1932 dest++; 1933 1934 /* For all but the last word of data, signal data received */ 1935 if (i < (length_in_words - 1)) { 1936 /* Signal dump data received - Clear IO debug Ack */ 1937 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1938 ioa_cfg->regs.clr_interrupt_reg); 1939 } 1940 } 1941 1942 /* Signal end of block transfer. Set reset alert then clear IO debug ack */ 1943 writel(IPR_UPROCI_RESET_ALERT, 1944 ioa_cfg->regs.set_uproc_interrupt_reg); 1945 1946 writel(IPR_UPROCI_IO_DEBUG_ALERT, 1947 ioa_cfg->regs.clr_uproc_interrupt_reg); 1948 1949 /* Signal dump data received - Clear IO debug Ack */ 1950 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1951 ioa_cfg->regs.clr_interrupt_reg); 1952 1953 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ 1954 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { 1955 temp_pcii_reg = 1956 readl(ioa_cfg->regs.sense_uproc_interrupt_reg); 1957 1958 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) 1959 return 0; 1960 1961 udelay(10); 1962 delay += 10; 1963 } 1964 1965 return 0; 1966} 1967 1968#ifdef CONFIG_SCSI_IPR_DUMP 1969/** 1970 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer 1971 * @ioa_cfg: ioa config struct 1972 * @pci_address: adapter address 1973 * @length: length of data to copy 1974 * 1975 * Copy data from PCI adapter to kernel buffer. 1976 * Note: length MUST be a 4 byte multiple 1977 * Return value: 1978 * 0 on success / other on failure 1979 **/ 1980static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, 1981 unsigned long pci_address, u32 length) 1982{ 1983 int bytes_copied = 0; 1984 int cur_len, rc, rem_len, rem_page_len; 1985 __be32 *page; 1986 unsigned long lock_flags = 0; 1987 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; 1988 1989 while (bytes_copied < length && 1990 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) { 1991 if (ioa_dump->page_offset >= PAGE_SIZE || 1992 ioa_dump->page_offset == 0) { 1993 page = (__be32 *)__get_free_page(GFP_ATOMIC); 1994 1995 if (!page) { 1996 ipr_trace; 1997 return bytes_copied; 1998 } 1999 2000 ioa_dump->page_offset = 0; 2001 ioa_dump->ioa_data[ioa_dump->next_page_index] = page; 2002 ioa_dump->next_page_index++; 2003 } else 2004 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; 2005 2006 rem_len = length - bytes_copied; 2007 rem_page_len = PAGE_SIZE - ioa_dump->page_offset; 2008 cur_len = min(rem_len, rem_page_len); 2009 2010 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2011 if (ioa_cfg->sdt_state == ABORT_DUMP) { 2012 rc = -EIO; 2013 } else { 2014 rc = ipr_get_ldump_data_section(ioa_cfg, 2015 pci_address + bytes_copied, 2016 &page[ioa_dump->page_offset / 4], 2017 (cur_len / sizeof(u32))); 2018 } 2019 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2020 2021 if (!rc) { 2022 ioa_dump->page_offset += cur_len; 2023 bytes_copied += cur_len; 2024 } else { 2025 ipr_trace; 2026 break; 2027 } 2028 schedule(); 2029 } 2030 2031 return bytes_copied; 2032} 2033 2034/** 2035 * ipr_init_dump_entry_hdr - Initialize a dump entry header. 2036 * @hdr: dump entry header struct 2037 * 2038 * Return value: 2039 * nothing 2040 **/ 2041static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) 2042{ 2043 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; 2044 hdr->num_elems = 1; 2045 hdr->offset = sizeof(*hdr); 2046 hdr->status = IPR_DUMP_STATUS_SUCCESS; 2047} 2048 2049/** 2050 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. 2051 * @ioa_cfg: ioa config struct 2052 * @driver_dump: driver dump struct 2053 * 2054 * Return value: 2055 * nothing 2056 **/ 2057static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, 2058 struct ipr_driver_dump *driver_dump) 2059{ 2060 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2061 2062 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); 2063 driver_dump->ioa_type_entry.hdr.len = 2064 sizeof(struct ipr_dump_ioa_type_entry) - 2065 sizeof(struct ipr_dump_entry_header); 2066 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2067 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; 2068 driver_dump->ioa_type_entry.type = ioa_cfg->type; 2069 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | 2070 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | 2071 ucode_vpd->minor_release[1]; 2072 driver_dump->hdr.num_entries++; 2073} 2074 2075/** 2076 * ipr_dump_version_data - Fill in the driver version in the dump. 2077 * @ioa_cfg: ioa config struct 2078 * @driver_dump: driver dump struct 2079 * 2080 * Return value: 2081 * nothing 2082 **/ 2083static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, 2084 struct ipr_driver_dump *driver_dump) 2085{ 2086 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); 2087 driver_dump->version_entry.hdr.len = 2088 sizeof(struct ipr_dump_version_entry) - 2089 sizeof(struct ipr_dump_entry_header); 2090 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2091 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; 2092 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); 2093 driver_dump->hdr.num_entries++; 2094} 2095 2096/** 2097 * ipr_dump_trace_data - Fill in the IOA trace in the dump. 2098 * @ioa_cfg: ioa config struct 2099 * @driver_dump: driver dump struct 2100 * 2101 * Return value: 2102 * nothing 2103 **/ 2104static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, 2105 struct ipr_driver_dump *driver_dump) 2106{ 2107 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); 2108 driver_dump->trace_entry.hdr.len = 2109 sizeof(struct ipr_dump_trace_entry) - 2110 sizeof(struct ipr_dump_entry_header); 2111 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2112 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; 2113 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); 2114 driver_dump->hdr.num_entries++; 2115} 2116 2117/** 2118 * ipr_dump_location_data - Fill in the IOA location in the dump. 2119 * @ioa_cfg: ioa config struct 2120 * @driver_dump: driver dump struct 2121 * 2122 * Return value: 2123 * nothing 2124 **/ 2125static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, 2126 struct ipr_driver_dump *driver_dump) 2127{ 2128 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); 2129 driver_dump->location_entry.hdr.len = 2130 sizeof(struct ipr_dump_location_entry) - 2131 sizeof(struct ipr_dump_entry_header); 2132 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2133 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; 2134 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id); 2135 driver_dump->hdr.num_entries++; 2136} 2137 2138/** 2139 * ipr_get_ioa_dump - Perform a dump of the driver and adapter. 2140 * @ioa_cfg: ioa config struct 2141 * @dump: dump struct 2142 * 2143 * Return value: 2144 * nothing 2145 **/ 2146static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) 2147{ 2148 unsigned long start_addr, sdt_word; 2149 unsigned long lock_flags = 0; 2150 struct ipr_driver_dump *driver_dump = &dump->driver_dump; 2151 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; 2152 u32 num_entries, start_off, end_off; 2153 u32 bytes_to_copy, bytes_copied, rc; 2154 struct ipr_sdt *sdt; 2155 int i; 2156 2157 ENTER; 2158 2159 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2160 2161 if (ioa_cfg->sdt_state != GET_DUMP) { 2162 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2163 return; 2164 } 2165 2166 start_addr = readl(ioa_cfg->ioa_mailbox); 2167 2168 if (!ipr_sdt_is_fmt2(start_addr)) { 2169 dev_err(&ioa_cfg->pdev->dev, 2170 "Invalid dump table format: %lx\n", start_addr); 2171 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2172 return; 2173 } 2174 2175 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); 2176 2177 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; 2178 2179 /* Initialize the overall dump header */ 2180 driver_dump->hdr.len = sizeof(struct ipr_driver_dump); 2181 driver_dump->hdr.num_entries = 1; 2182 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); 2183 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; 2184 driver_dump->hdr.os = IPR_DUMP_OS_LINUX; 2185 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; 2186 2187 ipr_dump_version_data(ioa_cfg, driver_dump); 2188 ipr_dump_location_data(ioa_cfg, driver_dump); 2189 ipr_dump_ioa_type_data(ioa_cfg, driver_dump); 2190 ipr_dump_trace_data(ioa_cfg, driver_dump); 2191 2192 /* Update dump_header */ 2193 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); 2194 2195 /* IOA Dump entry */ 2196 ipr_init_dump_entry_hdr(&ioa_dump->hdr); 2197 ioa_dump->format = IPR_SDT_FMT2; 2198 ioa_dump->hdr.len = 0; 2199 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2200 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; 2201 2202 /* First entries in sdt are actually a list of dump addresses and 2203 lengths to gather the real dump data. sdt represents the pointer 2204 to the ioa generated dump table. Dump data will be extracted based 2205 on entries in this table */ 2206 sdt = &ioa_dump->sdt; 2207 2208 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, 2209 sizeof(struct ipr_sdt) / sizeof(__be32)); 2210 2211 /* Smart Dump table is ready to use and the first entry is valid */ 2212 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) { 2213 dev_err(&ioa_cfg->pdev->dev, 2214 "Dump of IOA failed. Dump table not valid: %d, %X.\n", 2215 rc, be32_to_cpu(sdt->hdr.state)); 2216 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; 2217 ioa_cfg->sdt_state = DUMP_OBTAINED; 2218 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2219 return; 2220 } 2221 2222 num_entries = be32_to_cpu(sdt->hdr.num_entries_used); 2223 2224 if (num_entries > IPR_NUM_SDT_ENTRIES) 2225 num_entries = IPR_NUM_SDT_ENTRIES; 2226 2227 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2228 2229 for (i = 0; i < num_entries; i++) { 2230 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) { 2231 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 2232 break; 2233 } 2234 2235 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { 2236 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset); 2237 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; 2238 end_off = be32_to_cpu(sdt->entry[i].end_offset); 2239 2240 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) { 2241 bytes_to_copy = end_off - start_off; 2242 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) { 2243 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; 2244 continue; 2245 } 2246 2247 /* Copy data from adapter to driver buffers */ 2248 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, 2249 bytes_to_copy); 2250 2251 ioa_dump->hdr.len += bytes_copied; 2252 2253 if (bytes_copied != bytes_to_copy) { 2254 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 2255 break; 2256 } 2257 } 2258 } 2259 } 2260 2261 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); 2262 2263 /* Update dump_header */ 2264 driver_dump->hdr.len += ioa_dump->hdr.len; 2265 wmb(); 2266 ioa_cfg->sdt_state = DUMP_OBTAINED; 2267 LEAVE; 2268} 2269 2270#else 2271#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0) 2272#endif 2273 2274/** 2275 * ipr_release_dump - Free adapter dump memory 2276 * @kref: kref struct 2277 * 2278 * Return value: 2279 * nothing 2280 **/ 2281static void ipr_release_dump(struct kref *kref) 2282{ 2283 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref); 2284 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; 2285 unsigned long lock_flags = 0; 2286 int i; 2287 2288 ENTER; 2289 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2290 ioa_cfg->dump = NULL; 2291 ioa_cfg->sdt_state = INACTIVE; 2292 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2293 2294 for (i = 0; i < dump->ioa_dump.next_page_index; i++) 2295 free_page((unsigned long) dump->ioa_dump.ioa_data[i]); 2296 2297 kfree(dump); 2298 LEAVE; 2299} 2300 2301/** 2302 * ipr_worker_thread - Worker thread 2303 * @work: ioa config struct 2304 * 2305 * Called at task level from a work thread. This function takes care 2306 * of adding and removing device from the mid-layer as configuration 2307 * changes are detected by the adapter. 2308 * 2309 * Return value: 2310 * nothing 2311 **/ 2312static void ipr_worker_thread(struct work_struct *work) 2313{ 2314 unsigned long lock_flags; 2315 struct ipr_resource_entry *res; 2316 struct scsi_device *sdev; 2317 struct ipr_dump *dump; 2318 struct ipr_ioa_cfg *ioa_cfg = 2319 container_of(work, struct ipr_ioa_cfg, work_q); 2320 u8 bus, target, lun; 2321 int did_work; 2322 2323 ENTER; 2324 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2325 2326 if (ioa_cfg->sdt_state == GET_DUMP) { 2327 dump = ioa_cfg->dump; 2328 if (!dump) { 2329 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2330 return; 2331 } 2332 kref_get(&dump->kref); 2333 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2334 ipr_get_ioa_dump(ioa_cfg, dump); 2335 kref_put(&dump->kref, ipr_release_dump); 2336 2337 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2338 if (ioa_cfg->sdt_state == DUMP_OBTAINED) 2339 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2340 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2341 return; 2342 } 2343 2344restart: 2345 do { 2346 did_work = 0; 2347 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) { 2348 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2349 return; 2350 } 2351 2352 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2353 if (res->del_from_ml && res->sdev) { 2354 did_work = 1; 2355 sdev = res->sdev; 2356 if (!scsi_device_get(sdev)) { 2357 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 2358 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2359 scsi_remove_device(sdev); 2360 scsi_device_put(sdev); 2361 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2362 } 2363 break; 2364 } 2365 } 2366 } while(did_work); 2367 2368 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2369 if (res->add_to_ml) { 2370 bus = res->cfgte.res_addr.bus; 2371 target = res->cfgte.res_addr.target; 2372 lun = res->cfgte.res_addr.lun; 2373 res->add_to_ml = 0; 2374 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2375 scsi_add_device(ioa_cfg->host, bus, target, lun); 2376 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2377 goto restart; 2378 } 2379 } 2380 2381 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2382 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE); 2383 LEAVE; 2384} 2385 2386#ifdef CONFIG_SCSI_IPR_TRACE 2387/** 2388 * ipr_read_trace - Dump the adapter trace 2389 * @kobj: kobject struct 2390 * @buf: buffer 2391 * @off: offset 2392 * @count: buffer size 2393 * 2394 * Return value: 2395 * number of bytes printed to buffer 2396 **/ 2397static ssize_t ipr_read_trace(struct kobject *kobj, char *buf, 2398 loff_t off, size_t count) 2399{ 2400 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 2401 struct Scsi_Host *shost = class_to_shost(cdev); 2402 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2403 unsigned long lock_flags = 0; 2404 int size = IPR_TRACE_SIZE; 2405 char *src = (char *)ioa_cfg->trace; 2406 2407 if (off > size) 2408 return 0; 2409 if (off + count > size) { 2410 size -= off; 2411 count = size; 2412 } 2413 2414 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2415 memcpy(buf, &src[off], count); 2416 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2417 return count; 2418} 2419 2420static struct bin_attribute ipr_trace_attr = { 2421 .attr = { 2422 .name = "trace", 2423 .mode = S_IRUGO, 2424 }, 2425 .size = 0, 2426 .read = ipr_read_trace, 2427}; 2428#endif 2429 2430static const struct { 2431 enum ipr_cache_state state; 2432 char *name; 2433} cache_state [] = { 2434 { CACHE_NONE, "none" }, 2435 { CACHE_DISABLED, "disabled" }, 2436 { CACHE_ENABLED, "enabled" } 2437}; 2438 2439/** 2440 * ipr_show_write_caching - Show the write caching attribute 2441 * @class_dev: class device struct 2442 * @buf: buffer 2443 * 2444 * Return value: 2445 * number of bytes printed to buffer 2446 **/ 2447static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf) 2448{ 2449 struct Scsi_Host *shost = class_to_shost(class_dev); 2450 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2451 unsigned long lock_flags = 0; 2452 int i, len = 0; 2453 2454 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2455 for (i = 0; i < ARRAY_SIZE(cache_state); i++) { 2456 if (cache_state[i].state == ioa_cfg->cache_state) { 2457 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name); 2458 break; 2459 } 2460 } 2461 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2462 return len; 2463} 2464 2465 2466/** 2467 * ipr_store_write_caching - Enable/disable adapter write cache 2468 * @class_dev: class_device struct 2469 * @buf: buffer 2470 * @count: buffer size 2471 * 2472 * This function will enable/disable adapter write cache. 2473 * 2474 * Return value: 2475 * count on success / other on failure 2476 **/ 2477static ssize_t ipr_store_write_caching(struct class_device *class_dev, 2478 const char *buf, size_t count) 2479{ 2480 struct Scsi_Host *shost = class_to_shost(class_dev); 2481 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2482 unsigned long lock_flags = 0; 2483 enum ipr_cache_state new_state = CACHE_INVALID; 2484 int i; 2485 2486 if (!capable(CAP_SYS_ADMIN)) 2487 return -EACCES; 2488 if (ioa_cfg->cache_state == CACHE_NONE) 2489 return -EINVAL; 2490 2491 for (i = 0; i < ARRAY_SIZE(cache_state); i++) { 2492 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) { 2493 new_state = cache_state[i].state; 2494 break; 2495 } 2496 } 2497 2498 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED) 2499 return -EINVAL; 2500 2501 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2502 if (ioa_cfg->cache_state == new_state) { 2503 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2504 return count; 2505 } 2506 2507 ioa_cfg->cache_state = new_state; 2508 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n", 2509 new_state == CACHE_ENABLED ? "Enabling" : "Disabling"); 2510 if (!ioa_cfg->in_reset_reload) 2511 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2512 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2513 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2514 2515 return count; 2516} 2517 2518static struct class_device_attribute ipr_ioa_cache_attr = { 2519 .attr = { 2520 .name = "write_cache", 2521 .mode = S_IRUGO | S_IWUSR, 2522 }, 2523 .show = ipr_show_write_caching, 2524 .store = ipr_store_write_caching 2525}; 2526 2527/** 2528 * ipr_show_fw_version - Show the firmware version 2529 * @class_dev: class device struct 2530 * @buf: buffer 2531 * 2532 * Return value: 2533 * number of bytes printed to buffer 2534 **/ 2535static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf) 2536{ 2537 struct Scsi_Host *shost = class_to_shost(class_dev); 2538 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2539 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2540 unsigned long lock_flags = 0; 2541 int len; 2542 2543 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2544 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 2545 ucode_vpd->major_release, ucode_vpd->card_type, 2546 ucode_vpd->minor_release[0], 2547 ucode_vpd->minor_release[1]); 2548 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2549 return len; 2550} 2551 2552static struct class_device_attribute ipr_fw_version_attr = { 2553 .attr = { 2554 .name = "fw_version", 2555 .mode = S_IRUGO, 2556 }, 2557 .show = ipr_show_fw_version, 2558}; 2559 2560/** 2561 * ipr_show_log_level - Show the adapter's error logging level 2562 * @class_dev: class device struct 2563 * @buf: buffer 2564 * 2565 * Return value: 2566 * number of bytes printed to buffer 2567 **/ 2568static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf) 2569{ 2570 struct Scsi_Host *shost = class_to_shost(class_dev); 2571 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2572 unsigned long lock_flags = 0; 2573 int len; 2574 2575 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2576 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 2577 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2578 return len; 2579} 2580 2581/** 2582 * ipr_store_log_level - Change the adapter's error logging level 2583 * @class_dev: class device struct 2584 * @buf: buffer 2585 * 2586 * Return value: 2587 * number of bytes printed to buffer 2588 **/ 2589static ssize_t ipr_store_log_level(struct class_device *class_dev, 2590 const char *buf, size_t count) 2591{ 2592 struct Scsi_Host *shost = class_to_shost(class_dev); 2593 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2594 unsigned long lock_flags = 0; 2595 2596 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2597 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 2598 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2599 return strlen(buf); 2600} 2601 2602static struct class_device_attribute ipr_log_level_attr = { 2603 .attr = { 2604 .name = "log_level", 2605 .mode = S_IRUGO | S_IWUSR, 2606 }, 2607 .show = ipr_show_log_level, 2608 .store = ipr_store_log_level 2609}; 2610 2611/** 2612 * ipr_store_diagnostics - IOA Diagnostics interface 2613 * @class_dev: class_device struct 2614 * @buf: buffer 2615 * @count: buffer size 2616 * 2617 * This function will reset the adapter and wait a reasonable 2618 * amount of time for any errors that the adapter might log. 2619 * 2620 * Return value: 2621 * count on success / other on failure 2622 **/ 2623static ssize_t ipr_store_diagnostics(struct class_device *class_dev, 2624 const char *buf, size_t count) 2625{ 2626 struct Scsi_Host *shost = class_to_shost(class_dev); 2627 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2628 unsigned long lock_flags = 0; 2629 int rc = count; 2630 2631 if (!capable(CAP_SYS_ADMIN)) 2632 return -EACCES; 2633 2634 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2635 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2636 ioa_cfg->errors_logged = 0; 2637 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2638 2639 if (ioa_cfg->in_reset_reload) { 2640 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2641 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2642 2643 /* Wait for a second for any errors to be logged */ 2644 msleep(1000); 2645 } else { 2646 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2647 return -EIO; 2648 } 2649 2650 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2651 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 2652 rc = -EIO; 2653 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2654 2655 return rc; 2656} 2657 2658static struct class_device_attribute ipr_diagnostics_attr = { 2659 .attr = { 2660 .name = "run_diagnostics", 2661 .mode = S_IWUSR, 2662 }, 2663 .store = ipr_store_diagnostics 2664}; 2665 2666/** 2667 * ipr_show_adapter_state - Show the adapter's state 2668 * @class_dev: class device struct 2669 * @buf: buffer 2670 * 2671 * Return value: 2672 * number of bytes printed to buffer 2673 **/ 2674static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf) 2675{ 2676 struct Scsi_Host *shost = class_to_shost(class_dev); 2677 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2678 unsigned long lock_flags = 0; 2679 int len; 2680 2681 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2682 if (ioa_cfg->ioa_is_dead) 2683 len = snprintf(buf, PAGE_SIZE, "offline\n"); 2684 else 2685 len = snprintf(buf, PAGE_SIZE, "online\n"); 2686 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2687 return len; 2688} 2689 2690/** 2691 * ipr_store_adapter_state - Change adapter state 2692 * @class_dev: class_device struct 2693 * @buf: buffer 2694 * @count: buffer size 2695 * 2696 * This function will change the adapter's state. 2697 * 2698 * Return value: 2699 * count on success / other on failure 2700 **/ 2701static ssize_t ipr_store_adapter_state(struct class_device *class_dev, 2702 const char *buf, size_t count) 2703{ 2704 struct Scsi_Host *shost = class_to_shost(class_dev); 2705 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2706 unsigned long lock_flags; 2707 int result = count; 2708 2709 if (!capable(CAP_SYS_ADMIN)) 2710 return -EACCES; 2711 2712 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2713 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) { 2714 ioa_cfg->ioa_is_dead = 0; 2715 ioa_cfg->reset_retries = 0; 2716 ioa_cfg->in_ioa_bringdown = 0; 2717 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2718 } 2719 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2720 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2721 2722 return result; 2723} 2724 2725static struct class_device_attribute ipr_ioa_state_attr = { 2726 .attr = { 2727 .name = "state", 2728 .mode = S_IRUGO | S_IWUSR, 2729 }, 2730 .show = ipr_show_adapter_state, 2731 .store = ipr_store_adapter_state 2732}; 2733 2734/** 2735 * ipr_store_reset_adapter - Reset the adapter 2736 * @class_dev: class_device struct 2737 * @buf: buffer 2738 * @count: buffer size 2739 * 2740 * This function will reset the adapter. 2741 * 2742 * Return value: 2743 * count on success / other on failure 2744 **/ 2745static ssize_t ipr_store_reset_adapter(struct class_device *class_dev, 2746 const char *buf, size_t count) 2747{ 2748 struct Scsi_Host *shost = class_to_shost(class_dev); 2749 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2750 unsigned long lock_flags; 2751 int result = count; 2752 2753 if (!capable(CAP_SYS_ADMIN)) 2754 return -EACCES; 2755 2756 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2757 if (!ioa_cfg->in_reset_reload) 2758 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2759 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2760 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2761 2762 return result; 2763} 2764 2765static struct class_device_attribute ipr_ioa_reset_attr = { 2766 .attr = { 2767 .name = "reset_host", 2768 .mode = S_IWUSR, 2769 }, 2770 .store = ipr_store_reset_adapter 2771}; 2772 2773/** 2774 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 2775 * @buf_len: buffer length 2776 * 2777 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 2778 * list to use for microcode download 2779 * 2780 * Return value: 2781 * pointer to sglist / NULL on failure 2782 **/ 2783static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 2784{ 2785 int sg_size, order, bsize_elem, num_elem, i, j; 2786 struct ipr_sglist *sglist; 2787 struct scatterlist *scatterlist; 2788 struct page *page; 2789 2790 /* Get the minimum size per scatter/gather element */ 2791 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 2792 2793 /* Get the actual size per element */ 2794 order = get_order(sg_size); 2795 2796 /* Determine the actual number of bytes per element */ 2797 bsize_elem = PAGE_SIZE * (1 << order); 2798 2799 /* Determine the actual number of sg entries needed */ 2800 if (buf_len % bsize_elem) 2801 num_elem = (buf_len / bsize_elem) + 1; 2802 else 2803 num_elem = buf_len / bsize_elem; 2804 2805 /* Allocate a scatter/gather list for the DMA */ 2806 sglist = kzalloc(sizeof(struct ipr_sglist) + 2807 (sizeof(struct scatterlist) * (num_elem - 1)), 2808 GFP_KERNEL); 2809 2810 if (sglist == NULL) { 2811 ipr_trace; 2812 return NULL; 2813 } 2814 2815 scatterlist = sglist->scatterlist; 2816 2817 sglist->order = order; 2818 sglist->num_sg = num_elem; 2819 2820 /* Allocate a bunch of sg elements */ 2821 for (i = 0; i < num_elem; i++) { 2822 page = alloc_pages(GFP_KERNEL, order); 2823 if (!page) { 2824 ipr_trace; 2825 2826 /* Free up what we already allocated */ 2827 for (j = i - 1; j >= 0; j--) 2828 __free_pages(scatterlist[j].page, order); 2829 kfree(sglist); 2830 return NULL; 2831 } 2832 2833 scatterlist[i].page = page; 2834 } 2835 2836 return sglist; 2837} 2838 2839/** 2840 * ipr_free_ucode_buffer - Frees a microcode download buffer 2841 * @p_dnld: scatter/gather list pointer 2842 * 2843 * Free a DMA'able ucode download buffer previously allocated with 2844 * ipr_alloc_ucode_buffer 2845 * 2846 * Return value: 2847 * nothing 2848 **/ 2849static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 2850{ 2851 int i; 2852 2853 for (i = 0; i < sglist->num_sg; i++) 2854 __free_pages(sglist->scatterlist[i].page, sglist->order); 2855 2856 kfree(sglist); 2857} 2858 2859/** 2860 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 2861 * @sglist: scatter/gather list pointer 2862 * @buffer: buffer pointer 2863 * @len: buffer length 2864 * 2865 * Copy a microcode image from a user buffer into a buffer allocated by 2866 * ipr_alloc_ucode_buffer 2867 * 2868 * Return value: 2869 * 0 on success / other on failure 2870 **/ 2871static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 2872 u8 *buffer, u32 len) 2873{ 2874 int bsize_elem, i, result = 0; 2875 struct scatterlist *scatterlist; 2876 void *kaddr; 2877 2878 /* Determine the actual number of bytes per element */ 2879 bsize_elem = PAGE_SIZE * (1 << sglist->order); 2880 2881 scatterlist = sglist->scatterlist; 2882 2883 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { 2884 kaddr = kmap(scatterlist[i].page); 2885 memcpy(kaddr, buffer, bsize_elem); 2886 kunmap(scatterlist[i].page); 2887 2888 scatterlist[i].length = bsize_elem; 2889 2890 if (result != 0) { 2891 ipr_trace; 2892 return result; 2893 } 2894 } 2895 2896 if (len % bsize_elem) { 2897 kaddr = kmap(scatterlist[i].page); 2898 memcpy(kaddr, buffer, len % bsize_elem); 2899 kunmap(scatterlist[i].page); 2900 2901 scatterlist[i].length = len % bsize_elem; 2902 } 2903 2904 sglist->buffer_len = len; 2905 return result; 2906} 2907 2908/** 2909 * ipr_build_ucode_ioadl - Build a microcode download IOADL 2910 * @ipr_cmd: ipr command struct 2911 * @sglist: scatter/gather list 2912 * 2913 * Builds a microcode download IOA data list (IOADL). 2914 * 2915 **/ 2916static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, 2917 struct ipr_sglist *sglist) 2918{ 2919 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 2920 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 2921 struct scatterlist *scatterlist = sglist->scatterlist; 2922 int i; 2923 2924 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 2925 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 2926 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len); 2927 ioarcb->write_ioadl_len = 2928 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 2929 2930 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 2931 ioadl[i].flags_and_data_len = 2932 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); 2933 ioadl[i].address = 2934 cpu_to_be32(sg_dma_address(&scatterlist[i])); 2935 } 2936 2937 ioadl[i-1].flags_and_data_len |= 2938 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 2939} 2940 2941/** 2942 * ipr_update_ioa_ucode - Update IOA's microcode 2943 * @ioa_cfg: ioa config struct 2944 * @sglist: scatter/gather list 2945 * 2946 * Initiate an adapter reset to update the IOA's microcode 2947 * 2948 * Return value: 2949 * 0 on success / -EIO on failure 2950 **/ 2951static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, 2952 struct ipr_sglist *sglist) 2953{ 2954 unsigned long lock_flags; 2955 2956 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2957 2958 if (ioa_cfg->ucode_sglist) { 2959 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2960 dev_err(&ioa_cfg->pdev->dev, 2961 "Microcode download already in progress\n"); 2962 return -EIO; 2963 } 2964 2965 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist, 2966 sglist->num_sg, DMA_TO_DEVICE); 2967 2968 if (!sglist->num_dma_sg) { 2969 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2970 dev_err(&ioa_cfg->pdev->dev, 2971 "Failed to map microcode download buffer!\n"); 2972 return -EIO; 2973 } 2974 2975 ioa_cfg->ucode_sglist = sglist; 2976 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2977 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2978 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2979 2980 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2981 ioa_cfg->ucode_sglist = NULL; 2982 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2983 return 0; 2984} 2985 2986/** 2987 * ipr_store_update_fw - Update the firmware on the adapter 2988 * @class_dev: class_device struct 2989 * @buf: buffer 2990 * @count: buffer size 2991 * 2992 * This function will update the firmware on the adapter. 2993 * 2994 * Return value: 2995 * count on success / other on failure 2996 **/ 2997static ssize_t ipr_store_update_fw(struct class_device *class_dev, 2998 const char *buf, size_t count) 2999{ 3000 struct Scsi_Host *shost = class_to_shost(class_dev); 3001 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3002 struct ipr_ucode_image_header *image_hdr; 3003 const struct firmware *fw_entry; 3004 struct ipr_sglist *sglist; 3005 char fname[100]; 3006 char *src; 3007 int len, result, dnld_size; 3008 3009 if (!capable(CAP_SYS_ADMIN)) 3010 return -EACCES; 3011 3012 len = snprintf(fname, 99, "%s", buf); 3013 fname[len-1] = '\0'; 3014 3015 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 3016 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 3017 return -EIO; 3018 } 3019 3020 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 3021 3022 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size || 3023 (ioa_cfg->vpd_cbs->page3_data.card_type && 3024 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) { 3025 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n"); 3026 release_firmware(fw_entry); 3027 return -EINVAL; 3028 } 3029 3030 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 3031 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 3032 sglist = ipr_alloc_ucode_buffer(dnld_size); 3033 3034 if (!sglist) { 3035 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 3036 release_firmware(fw_entry); 3037 return -ENOMEM; 3038 } 3039 3040 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 3041 3042 if (result) { 3043 dev_err(&ioa_cfg->pdev->dev, 3044 "Microcode buffer copy to DMA buffer failed\n"); 3045 goto out; 3046 } 3047 3048 result = ipr_update_ioa_ucode(ioa_cfg, sglist); 3049 3050 if (!result) 3051 result = count; 3052out: 3053 ipr_free_ucode_buffer(sglist); 3054 release_firmware(fw_entry); 3055 return result; 3056} 3057 3058static struct class_device_attribute ipr_update_fw_attr = { 3059 .attr = { 3060 .name = "update_fw", 3061 .mode = S_IWUSR, 3062 }, 3063 .store = ipr_store_update_fw 3064}; 3065 3066static struct class_device_attribute *ipr_ioa_attrs[] = { 3067 &ipr_fw_version_attr, 3068 &ipr_log_level_attr, 3069 &ipr_diagnostics_attr, 3070 &ipr_ioa_state_attr, 3071 &ipr_ioa_reset_attr, 3072 &ipr_update_fw_attr, 3073 &ipr_ioa_cache_attr, 3074 NULL, 3075}; 3076 3077#ifdef CONFIG_SCSI_IPR_DUMP 3078/** 3079 * ipr_read_dump - Dump the adapter 3080 * @kobj: kobject struct 3081 * @buf: buffer 3082 * @off: offset 3083 * @count: buffer size 3084 * 3085 * Return value: 3086 * number of bytes printed to buffer 3087 **/ 3088static ssize_t ipr_read_dump(struct kobject *kobj, char *buf, 3089 loff_t off, size_t count) 3090{ 3091 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 3092 struct Scsi_Host *shost = class_to_shost(cdev); 3093 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3094 struct ipr_dump *dump; 3095 unsigned long lock_flags = 0; 3096 char *src; 3097 int len; 3098 size_t rc = count; 3099 3100 if (!capable(CAP_SYS_ADMIN)) 3101 return -EACCES; 3102 3103 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3104 dump = ioa_cfg->dump; 3105 3106 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 3107 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3108 return 0; 3109 } 3110 kref_get(&dump->kref); 3111 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3112 3113 if (off > dump->driver_dump.hdr.len) { 3114 kref_put(&dump->kref, ipr_release_dump); 3115 return 0; 3116 } 3117 3118 if (off + count > dump->driver_dump.hdr.len) { 3119 count = dump->driver_dump.hdr.len - off; 3120 rc = count; 3121 } 3122 3123 if (count && off < sizeof(dump->driver_dump)) { 3124 if (off + count > sizeof(dump->driver_dump)) 3125 len = sizeof(dump->driver_dump) - off; 3126 else 3127 len = count; 3128 src = (u8 *)&dump->driver_dump + off; 3129 memcpy(buf, src, len); 3130 buf += len; 3131 off += len; 3132 count -= len; 3133 } 3134 3135 off -= sizeof(dump->driver_dump); 3136 3137 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) { 3138 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data)) 3139 len = offsetof(struct ipr_ioa_dump, ioa_data) - off; 3140 else 3141 len = count; 3142 src = (u8 *)&dump->ioa_dump + off; 3143 memcpy(buf, src, len); 3144 buf += len; 3145 off += len; 3146 count -= len; 3147 } 3148 3149 off -= offsetof(struct ipr_ioa_dump, ioa_data); 3150 3151 while (count) { 3152 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 3153 len = PAGE_ALIGN(off) - off; 3154 else 3155 len = count; 3156 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 3157 src += off & ~PAGE_MASK; 3158 memcpy(buf, src, len); 3159 buf += len; 3160 off += len; 3161 count -= len; 3162 } 3163 3164 kref_put(&dump->kref, ipr_release_dump); 3165 return rc; 3166} 3167 3168/** 3169 * ipr_alloc_dump - Prepare for adapter dump 3170 * @ioa_cfg: ioa config struct 3171 * 3172 * Return value: 3173 * 0 on success / other on failure 3174 **/ 3175static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 3176{ 3177 struct ipr_dump *dump; 3178 unsigned long lock_flags = 0; 3179 3180 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); 3181 3182 if (!dump) { 3183 ipr_err("Dump memory allocation failed\n"); 3184 return -ENOMEM; 3185 } 3186 3187 kref_init(&dump->kref); 3188 dump->ioa_cfg = ioa_cfg; 3189 3190 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3191 3192 if (INACTIVE != ioa_cfg->sdt_state) { 3193 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3194 kfree(dump); 3195 return 0; 3196 } 3197 3198 ioa_cfg->dump = dump; 3199 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 3200 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) { 3201 ioa_cfg->dump_taken = 1; 3202 schedule_work(&ioa_cfg->work_q); 3203 } 3204 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3205 3206 return 0; 3207} 3208 3209/** 3210 * ipr_free_dump - Free adapter dump memory 3211 * @ioa_cfg: ioa config struct 3212 * 3213 * Return value: 3214 * 0 on success / other on failure 3215 **/ 3216static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 3217{ 3218 struct ipr_dump *dump; 3219 unsigned long lock_flags = 0; 3220 3221 ENTER; 3222 3223 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3224 dump = ioa_cfg->dump; 3225 if (!dump) { 3226 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3227 return 0; 3228 } 3229 3230 ioa_cfg->dump = NULL; 3231 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3232 3233 kref_put(&dump->kref, ipr_release_dump); 3234 3235 LEAVE; 3236 return 0; 3237} 3238 3239/** 3240 * ipr_write_dump - Setup dump state of adapter 3241 * @kobj: kobject struct 3242 * @buf: buffer 3243 * @off: offset 3244 * @count: buffer size 3245 * 3246 * Return value: 3247 * number of bytes printed to buffer 3248 **/ 3249static ssize_t ipr_write_dump(struct kobject *kobj, char *buf, 3250 loff_t off, size_t count) 3251{ 3252 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 3253 struct Scsi_Host *shost = class_to_shost(cdev); 3254 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3255 int rc; 3256 3257 if (!capable(CAP_SYS_ADMIN)) 3258 return -EACCES; 3259 3260 if (buf[0] == '1') 3261 rc = ipr_alloc_dump(ioa_cfg); 3262 else if (buf[0] == '0') 3263 rc = ipr_free_dump(ioa_cfg); 3264 else 3265 return -EINVAL; 3266 3267 if (rc) 3268 return rc; 3269 else 3270 return count; 3271} 3272 3273static struct bin_attribute ipr_dump_attr = { 3274 .attr = { 3275 .name = "dump", 3276 .mode = S_IRUSR | S_IWUSR, 3277 }, 3278 .size = 0, 3279 .read = ipr_read_dump, 3280 .write = ipr_write_dump 3281}; 3282#else 3283static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 3284#endif 3285 3286/** 3287 * ipr_change_queue_depth - Change the device's queue depth 3288 * @sdev: scsi device struct 3289 * @qdepth: depth to set 3290 * 3291 * Return value: 3292 * actual depth set 3293 **/ 3294static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) 3295{ 3296 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3297 struct ipr_resource_entry *res; 3298 unsigned long lock_flags = 0; 3299 3300 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3301 res = (struct ipr_resource_entry *)sdev->hostdata; 3302 3303 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN) 3304 qdepth = IPR_MAX_CMD_PER_ATA_LUN; 3305 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3306 3307 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); 3308 return sdev->queue_depth; 3309} 3310 3311/** 3312 * ipr_change_queue_type - Change the device's queue type 3313 * @dsev: scsi device struct 3314 * @tag_type: type of tags to use 3315 * 3316 * Return value: 3317 * actual queue type set 3318 **/ 3319static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type) 3320{ 3321 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3322 struct ipr_resource_entry *res; 3323 unsigned long lock_flags = 0; 3324 3325 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3326 res = (struct ipr_resource_entry *)sdev->hostdata; 3327 3328 if (res) { 3329 if (ipr_is_gscsi(res) && sdev->tagged_supported) { 3330 /* 3331 * We don't bother quiescing the device here since the 3332 * adapter firmware does it for us. 3333 */ 3334 scsi_set_tag_type(sdev, tag_type); 3335 3336 if (tag_type) 3337 scsi_activate_tcq(sdev, sdev->queue_depth); 3338 else 3339 scsi_deactivate_tcq(sdev, sdev->queue_depth); 3340 } else 3341 tag_type = 0; 3342 } else 3343 tag_type = 0; 3344 3345 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3346 return tag_type; 3347} 3348 3349/** 3350 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 3351 * @dev: device struct 3352 * @buf: buffer 3353 * 3354 * Return value: 3355 * number of bytes printed to buffer 3356 **/ 3357static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) 3358{ 3359 struct scsi_device *sdev = to_scsi_device(dev); 3360 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3361 struct ipr_resource_entry *res; 3362 unsigned long lock_flags = 0; 3363 ssize_t len = -ENXIO; 3364 3365 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3366 res = (struct ipr_resource_entry *)sdev->hostdata; 3367 if (res) 3368 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle); 3369 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3370 return len; 3371} 3372 3373static struct device_attribute ipr_adapter_handle_attr = { 3374 .attr = { 3375 .name = "adapter_handle", 3376 .mode = S_IRUSR, 3377 }, 3378 .show = ipr_show_adapter_handle 3379}; 3380 3381static struct device_attribute *ipr_dev_attrs[] = { 3382 &ipr_adapter_handle_attr, 3383 NULL, 3384}; 3385 3386/** 3387 * ipr_biosparam - Return the HSC mapping 3388 * @sdev: scsi device struct 3389 * @block_device: block device pointer 3390 * @capacity: capacity of the device 3391 * @parm: Array containing returned HSC values. 3392 * 3393 * This function generates the HSC parms that fdisk uses. 3394 * We want to make sure we return something that places partitions 3395 * on 4k boundaries for best performance with the IOA. 3396 * 3397 * Return value: 3398 * 0 on success 3399 **/ 3400static int ipr_biosparam(struct scsi_device *sdev, 3401 struct block_device *block_device, 3402 sector_t capacity, int *parm) 3403{ 3404 int heads, sectors; 3405 sector_t cylinders; 3406 3407 heads = 128; 3408 sectors = 32; 3409 3410 cylinders = capacity; 3411 sector_div(cylinders, (128 * 32)); 3412 3413 /* return result */ 3414 parm[0] = heads; 3415 parm[1] = sectors; 3416 parm[2] = cylinders; 3417 3418 return 0; 3419} 3420 3421/** 3422 * ipr_find_starget - Find target based on bus/target. 3423 * @starget: scsi target struct 3424 * 3425 * Return value: 3426 * resource entry pointer if found / NULL if not found 3427 **/ 3428static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget) 3429{ 3430 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 3431 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 3432 struct ipr_resource_entry *res; 3433 3434 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3435 if ((res->cfgte.res_addr.bus == starget->channel) && 3436 (res->cfgte.res_addr.target == starget->id) && 3437 (res->cfgte.res_addr.lun == 0)) { 3438 return res; 3439 } 3440 } 3441 3442 return NULL; 3443} 3444 3445static struct ata_port_info sata_port_info; 3446 3447/** 3448 * ipr_target_alloc - Prepare for commands to a SCSI target 3449 * @starget: scsi target struct 3450 * 3451 * If the device is a SATA device, this function allocates an 3452 * ATA port with libata, else it does nothing. 3453 * 3454 * Return value: 3455 * 0 on success / non-0 on failure 3456 **/ 3457static int ipr_target_alloc(struct scsi_target *starget) 3458{ 3459 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 3460 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 3461 struct ipr_sata_port *sata_port; 3462 struct ata_port *ap; 3463 struct ipr_resource_entry *res; 3464 unsigned long lock_flags; 3465 3466 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3467 res = ipr_find_starget(starget); 3468 starget->hostdata = NULL; 3469 3470 if (res && ipr_is_gata(res)) { 3471 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3472 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL); 3473 if (!sata_port) 3474 return -ENOMEM; 3475 3476 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost); 3477 if (ap) { 3478 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3479 sata_port->ioa_cfg = ioa_cfg; 3480 sata_port->ap = ap; 3481 sata_port->res = res; 3482 3483 res->sata_port = sata_port; 3484 ap->private_data = sata_port; 3485 starget->hostdata = sata_port; 3486 } else { 3487 kfree(sata_port); 3488 return -ENOMEM; 3489 } 3490 } 3491 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3492 3493 return 0; 3494} 3495 3496/** 3497 * ipr_target_destroy - Destroy a SCSI target 3498 * @starget: scsi target struct 3499 * 3500 * If the device was a SATA device, this function frees the libata 3501 * ATA port, else it does nothing. 3502 * 3503 **/ 3504static void ipr_target_destroy(struct scsi_target *starget) 3505{ 3506 struct ipr_sata_port *sata_port = starget->hostdata; 3507 3508 if (sata_port) { 3509 starget->hostdata = NULL; 3510 ata_sas_port_destroy(sata_port->ap); 3511 kfree(sata_port); 3512 } 3513} 3514 3515/** 3516 * ipr_find_sdev - Find device based on bus/target/lun. 3517 * @sdev: scsi device struct 3518 * 3519 * Return value: 3520 * resource entry pointer if found / NULL if not found 3521 **/ 3522static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev) 3523{ 3524 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3525 struct ipr_resource_entry *res; 3526 3527 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3528 if ((res->cfgte.res_addr.bus == sdev->channel) && 3529 (res->cfgte.res_addr.target == sdev->id) && 3530 (res->cfgte.res_addr.lun == sdev->lun)) 3531 return res; 3532 } 3533 3534 return NULL; 3535} 3536 3537/** 3538 * ipr_slave_destroy - Unconfigure a SCSI device 3539 * @sdev: scsi device struct 3540 * 3541 * Return value: 3542 * nothing 3543 **/ 3544static void ipr_slave_destroy(struct scsi_device *sdev) 3545{ 3546 struct ipr_resource_entry *res; 3547 struct ipr_ioa_cfg *ioa_cfg; 3548 unsigned long lock_flags = 0; 3549 3550 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3551 3552 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3553 res = (struct ipr_resource_entry *) sdev->hostdata; 3554 if (res) { 3555 if (res->sata_port) 3556 ata_port_disable(res->sata_port->ap); 3557 sdev->hostdata = NULL; 3558 res->sdev = NULL; 3559 res->sata_port = NULL; 3560 } 3561 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3562} 3563 3564/** 3565 * ipr_slave_configure - Configure a SCSI device 3566 * @sdev: scsi device struct 3567 * 3568 * This function configures the specified scsi device. 3569 * 3570 * Return value: 3571 * 0 on success 3572 **/ 3573static int ipr_slave_configure(struct scsi_device *sdev) 3574{ 3575 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3576 struct ipr_resource_entry *res; 3577 unsigned long lock_flags = 0; 3578 3579 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3580 res = sdev->hostdata; 3581 if (res) { 3582 if (ipr_is_af_dasd_device(res)) 3583 sdev->type = TYPE_RAID; 3584 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { 3585 sdev->scsi_level = 4; 3586 sdev->no_uld_attach = 1; 3587 } 3588 if (ipr_is_vset_device(res)) { 3589 sdev->timeout = IPR_VSET_RW_TIMEOUT; 3590 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); 3591 } 3592 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)) 3593 sdev->allow_restart = 1; 3594 if (ipr_is_gata(res) && res->sata_port) { 3595 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN); 3596 ata_sas_slave_configure(sdev, res->sata_port->ap); 3597 } else { 3598 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); 3599 } 3600 } 3601 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3602 return 0; 3603} 3604 3605/** 3606 * ipr_ata_slave_alloc - Prepare for commands to a SATA device 3607 * @sdev: scsi device struct 3608 * 3609 * This function initializes an ATA port so that future commands 3610 * sent through queuecommand will work. 3611 * 3612 * Return value: 3613 * 0 on success 3614 **/ 3615static int ipr_ata_slave_alloc(struct scsi_device *sdev) 3616{ 3617 struct ipr_sata_port *sata_port = NULL; 3618 int rc = -ENXIO; 3619 3620 ENTER; 3621 if (sdev->sdev_target) 3622 sata_port = sdev->sdev_target->hostdata; 3623 if (sata_port) 3624 rc = ata_sas_port_init(sata_port->ap); 3625 if (rc) 3626 ipr_slave_destroy(sdev); 3627 3628 LEAVE; 3629 return rc; 3630} 3631 3632/** 3633 * ipr_slave_alloc - Prepare for commands to a device. 3634 * @sdev: scsi device struct 3635 * 3636 * This function saves a pointer to the resource entry 3637 * in the scsi device struct if the device exists. We 3638 * can then use this pointer in ipr_queuecommand when 3639 * handling new commands. 3640 * 3641 * Return value: 3642 * 0 on success / -ENXIO if device does not exist 3643 **/ 3644static int ipr_slave_alloc(struct scsi_device *sdev) 3645{ 3646 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3647 struct ipr_resource_entry *res; 3648 unsigned long lock_flags; 3649 int rc = -ENXIO; 3650 3651 sdev->hostdata = NULL; 3652 3653 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3654 3655 res = ipr_find_sdev(sdev); 3656 if (res) { 3657 res->sdev = sdev; 3658 res->add_to_ml = 0; 3659 res->in_erp = 0; 3660 sdev->hostdata = res; 3661 if (!ipr_is_naca_model(res)) 3662 res->needs_sync_complete = 1; 3663 rc = 0; 3664 if (ipr_is_gata(res)) { 3665 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3666 return ipr_ata_slave_alloc(sdev); 3667 } 3668 } 3669 3670 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3671 3672 return rc; 3673} 3674 3675/** 3676 * ipr_eh_host_reset - Reset the host adapter 3677 * @scsi_cmd: scsi command struct 3678 * 3679 * Return value: 3680 * SUCCESS / FAILED 3681 **/ 3682static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd) 3683{ 3684 struct ipr_ioa_cfg *ioa_cfg; 3685 int rc; 3686 3687 ENTER; 3688 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 3689 3690 dev_err(&ioa_cfg->pdev->dev, 3691 "Adapter being reset as a result of error recovery.\n"); 3692 3693 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 3694 ioa_cfg->sdt_state = GET_DUMP; 3695 3696 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV); 3697 3698 LEAVE; 3699 return rc; 3700} 3701 3702static int ipr_eh_host_reset(struct scsi_cmnd * cmd) 3703{ 3704 int rc; 3705 3706 spin_lock_irq(cmd->device->host->host_lock); 3707 rc = __ipr_eh_host_reset(cmd); 3708 spin_unlock_irq(cmd->device->host->host_lock); 3709 3710 return rc; 3711} 3712 3713/** 3714 * ipr_device_reset - Reset the device 3715 * @ioa_cfg: ioa config struct 3716 * @res: resource entry struct 3717 * 3718 * This function issues a device reset to the affected device. 3719 * If the device is a SCSI device, a LUN reset will be sent 3720 * to the device first. If that does not work, a target reset 3721 * will be sent. If the device is a SATA device, a PHY reset will 3722 * be sent. 3723 * 3724 * Return value: 3725 * 0 on success / non-zero on failure 3726 **/ 3727static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, 3728 struct ipr_resource_entry *res) 3729{ 3730 struct ipr_cmnd *ipr_cmd; 3731 struct ipr_ioarcb *ioarcb; 3732 struct ipr_cmd_pkt *cmd_pkt; 3733 struct ipr_ioarcb_ata_regs *regs; 3734 u32 ioasc; 3735 3736 ENTER; 3737 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3738 ioarcb = &ipr_cmd->ioarcb; 3739 cmd_pkt = &ioarcb->cmd_pkt; 3740 regs = &ioarcb->add_data.u.regs; 3741 3742 ioarcb->res_handle = res->cfgte.res_handle; 3743 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3744 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 3745 if (ipr_is_gata(res)) { 3746 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET; 3747 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags)); 3748 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 3749 } 3750 3751 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 3752 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3753 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3754 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) 3755 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata, 3756 sizeof(struct ipr_ioasa_gata)); 3757 3758 LEAVE; 3759 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0); 3760} 3761 3762/** 3763 * ipr_sata_reset - Reset the SATA port 3764 * @ap: SATA port to reset 3765 * @classes: class of the attached device 3766 * 3767 * This function issues a SATA phy reset to the affected ATA port. 3768 * 3769 * Return value: 3770 * 0 on success / non-zero on failure 3771 **/ 3772static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes) 3773{ 3774 struct ipr_sata_port *sata_port = ap->private_data; 3775 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 3776 struct ipr_resource_entry *res; 3777 unsigned long lock_flags = 0; 3778 int rc = -ENXIO; 3779 3780 ENTER; 3781 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3782 while(ioa_cfg->in_reset_reload) { 3783 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3784 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3785 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3786 } 3787 3788 res = sata_port->res; 3789 if (res) { 3790 rc = ipr_device_reset(ioa_cfg, res); 3791 switch(res->cfgte.proto) { 3792 case IPR_PROTO_SATA: 3793 case IPR_PROTO_SAS_STP: 3794 *classes = ATA_DEV_ATA; 3795 break; 3796 case IPR_PROTO_SATA_ATAPI: 3797 case IPR_PROTO_SAS_STP_ATAPI: 3798 *classes = ATA_DEV_ATAPI; 3799 break; 3800 default: 3801 *classes = ATA_DEV_UNKNOWN; 3802 break; 3803 }; 3804 } 3805 3806 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3807 LEAVE; 3808 return rc; 3809} 3810 3811/** 3812 * ipr_eh_dev_reset - Reset the device 3813 * @scsi_cmd: scsi command struct 3814 * 3815 * This function issues a device reset to the affected device. 3816 * A LUN reset will be sent to the device first. If that does 3817 * not work, a target reset will be sent. 3818 * 3819 * Return value: 3820 * SUCCESS / FAILED 3821 **/ 3822static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) 3823{ 3824 struct ipr_cmnd *ipr_cmd; 3825 struct ipr_ioa_cfg *ioa_cfg; 3826 struct ipr_resource_entry *res; 3827 struct ata_port *ap; 3828 int rc = 0; 3829 3830 ENTER; 3831 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 3832 res = scsi_cmd->device->hostdata; 3833 3834 if (!res) 3835 return FAILED; 3836 3837 /* 3838 * If we are currently going through reset/reload, return failed. This will force the 3839 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 3840 * reset to complete 3841 */ 3842 if (ioa_cfg->in_reset_reload) 3843 return FAILED; 3844 if (ioa_cfg->ioa_is_dead) 3845 return FAILED; 3846 3847 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3848 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) { 3849 if (ipr_cmd->scsi_cmd) 3850 ipr_cmd->done = ipr_scsi_eh_done; 3851 if (ipr_cmd->qc) 3852 ipr_cmd->done = ipr_sata_eh_done; 3853 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) { 3854 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT; 3855 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED; 3856 } 3857 } 3858 } 3859 3860 res->resetting_device = 1; 3861 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); 3862 3863 if (ipr_is_gata(res) && res->sata_port) { 3864 ap = res->sata_port->ap; 3865 spin_unlock_irq(scsi_cmd->device->host->host_lock); 3866 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL); 3867 spin_lock_irq(scsi_cmd->device->host->host_lock); 3868 } else 3869 rc = ipr_device_reset(ioa_cfg, res); 3870 res->resetting_device = 0; 3871 3872 LEAVE; 3873 return (rc ? FAILED : SUCCESS); 3874} 3875 3876static int ipr_eh_dev_reset(struct scsi_cmnd * cmd) 3877{ 3878 int rc; 3879 3880 spin_lock_irq(cmd->device->host->host_lock); 3881 rc = __ipr_eh_dev_reset(cmd); 3882 spin_unlock_irq(cmd->device->host->host_lock); 3883 3884 return rc; 3885} 3886 3887/** 3888 * ipr_bus_reset_done - Op done function for bus reset. 3889 * @ipr_cmd: ipr command struct 3890 * 3891 * This function is the op done function for a bus reset 3892 * 3893 * Return value: 3894 * none 3895 **/ 3896static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 3897{ 3898 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3899 struct ipr_resource_entry *res; 3900 3901 ENTER; 3902 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3903 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle, 3904 sizeof(res->cfgte.res_handle))) { 3905 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus); 3906 break; 3907 } 3908 } 3909 3910 /* 3911 * If abort has not completed, indicate the reset has, else call the 3912 * abort's done function to wake the sleeping eh thread 3913 */ 3914 if (ipr_cmd->sibling->sibling) 3915 ipr_cmd->sibling->sibling = NULL; 3916 else 3917 ipr_cmd->sibling->done(ipr_cmd->sibling); 3918 3919 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3920 LEAVE; 3921} 3922 3923/** 3924 * ipr_abort_timeout - An abort task has timed out 3925 * @ipr_cmd: ipr command struct 3926 * 3927 * This function handles when an abort task times out. If this 3928 * happens we issue a bus reset since we have resources tied 3929 * up that must be freed before returning to the midlayer. 3930 * 3931 * Return value: 3932 * none 3933 **/ 3934static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 3935{ 3936 struct ipr_cmnd *reset_cmd; 3937 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3938 struct ipr_cmd_pkt *cmd_pkt; 3939 unsigned long lock_flags = 0; 3940 3941 ENTER; 3942 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3943 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 3944 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3945 return; 3946 } 3947 3948 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n"); 3949 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3950 ipr_cmd->sibling = reset_cmd; 3951 reset_cmd->sibling = ipr_cmd; 3952 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 3953 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 3954 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3955 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 3956 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 3957 3958 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 3959 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3960 LEAVE; 3961} 3962 3963/** 3964 * ipr_cancel_op - Cancel specified op 3965 * @scsi_cmd: scsi command struct 3966 * 3967 * This function cancels specified op. 3968 * 3969 * Return value: 3970 * SUCCESS / FAILED 3971 **/ 3972static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) 3973{ 3974 struct ipr_cmnd *ipr_cmd; 3975 struct ipr_ioa_cfg *ioa_cfg; 3976 struct ipr_resource_entry *res; 3977 struct ipr_cmd_pkt *cmd_pkt; 3978 u32 ioasc; 3979 int op_found = 0; 3980 3981 ENTER; 3982 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 3983 res = scsi_cmd->device->hostdata; 3984 3985 /* If we are currently going through reset/reload, return failed. 3986 * This will force the mid-layer to call ipr_eh_host_reset, 3987 * which will then go to sleep and wait for the reset to complete 3988 */ 3989 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) 3990 return FAILED; 3991 if (!res || !ipr_is_gscsi(res)) 3992 return FAILED; 3993 3994 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3995 if (ipr_cmd->scsi_cmd == scsi_cmd) { 3996 ipr_cmd->done = ipr_scsi_eh_done; 3997 op_found = 1; 3998 break; 3999 } 4000 } 4001 4002 if (!op_found) 4003 return SUCCESS; 4004 4005 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4006 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 4007 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4008 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4009 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4010 ipr_cmd->u.sdev = scsi_cmd->device; 4011 4012 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n", 4013 scsi_cmd->cmnd[0]); 4014 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 4015 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4016 4017 /* 4018 * If the abort task timed out and we sent a bus reset, we will get 4019 * one the following responses to the abort 4020 */ 4021 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 4022 ioasc = 0; 4023 ipr_trace; 4024 } 4025 4026 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4027 if (!ipr_is_naca_model(res)) 4028 res->needs_sync_complete = 1; 4029 4030 LEAVE; 4031 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); 4032} 4033 4034/** 4035 * ipr_eh_abort - Abort a single op 4036 * @scsi_cmd: scsi command struct 4037 * 4038 * Return value: 4039 * SUCCESS / FAILED 4040 **/ 4041static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) 4042{ 4043 unsigned long flags; 4044 int rc; 4045 4046 ENTER; 4047 4048 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 4049 rc = ipr_cancel_op(scsi_cmd); 4050 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 4051 4052 LEAVE; 4053 return rc; 4054} 4055 4056/** 4057 * ipr_handle_other_interrupt - Handle "other" interrupts 4058 * @ioa_cfg: ioa config struct 4059 * @int_reg: interrupt register 4060 * 4061 * Return value: 4062 * IRQ_NONE / IRQ_HANDLED 4063 **/ 4064static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 4065 volatile u32 int_reg) 4066{ 4067 irqreturn_t rc = IRQ_HANDLED; 4068 4069 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 4070 /* Mask the interrupt */ 4071 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 4072 4073 /* Clear the interrupt */ 4074 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); 4075 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 4076 4077 list_del(&ioa_cfg->reset_cmd->queue); 4078 del_timer(&ioa_cfg->reset_cmd->timer); 4079 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 4080 } else { 4081 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 4082 ioa_cfg->ioa_unit_checked = 1; 4083 else 4084 dev_err(&ioa_cfg->pdev->dev, 4085 "Permanent IOA failure. 0x%08X\n", int_reg); 4086 4087 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4088 ioa_cfg->sdt_state = GET_DUMP; 4089 4090 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 4091 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4092 } 4093 4094 return rc; 4095} 4096 4097/** 4098 * ipr_isr - Interrupt service routine 4099 * @irq: irq number 4100 * @devp: pointer to ioa config struct 4101 * 4102 * Return value: 4103 * IRQ_NONE / IRQ_HANDLED 4104 **/ 4105static irqreturn_t ipr_isr(int irq, void *devp) 4106{ 4107 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 4108 unsigned long lock_flags = 0; 4109 volatile u32 int_reg, int_mask_reg; 4110 u32 ioasc; 4111 u16 cmd_index; 4112 struct ipr_cmnd *ipr_cmd; 4113 irqreturn_t rc = IRQ_NONE; 4114 4115 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4116 4117 /* If interrupts are disabled, ignore the interrupt */ 4118 if (!ioa_cfg->allow_interrupts) { 4119 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4120 return IRQ_NONE; 4121 } 4122 4123 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 4124 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 4125 4126 /* If an interrupt on the adapter did not occur, ignore it */ 4127 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) { 4128 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4129 return IRQ_NONE; 4130 } 4131 4132 while (1) { 4133 ipr_cmd = NULL; 4134 4135 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 4136 ioa_cfg->toggle_bit) { 4137 4138 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & 4139 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 4140 4141 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { 4142 ioa_cfg->errors_logged++; 4143 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n"); 4144 4145 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4146 ioa_cfg->sdt_state = GET_DUMP; 4147 4148 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4149 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4150 return IRQ_HANDLED; 4151 } 4152 4153 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 4154 4155 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4156 4157 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 4158 4159 list_del(&ipr_cmd->queue); 4160 del_timer(&ipr_cmd->timer); 4161 ipr_cmd->done(ipr_cmd); 4162 4163 rc = IRQ_HANDLED; 4164 4165 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { 4166 ioa_cfg->hrrq_curr++; 4167 } else { 4168 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 4169 ioa_cfg->toggle_bit ^= 1u; 4170 } 4171 } 4172 4173 if (ipr_cmd != NULL) { 4174 /* Clear the PCI interrupt */ 4175 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg); 4176 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 4177 } else 4178 break; 4179 } 4180 4181 if (unlikely(rc == IRQ_NONE)) 4182 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 4183 4184 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4185 return rc; 4186} 4187 4188/** 4189 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 4190 * @ioa_cfg: ioa config struct 4191 * @ipr_cmd: ipr command struct 4192 * 4193 * Return value: 4194 * 0 on success / -1 on failure 4195 **/ 4196static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 4197 struct ipr_cmnd *ipr_cmd) 4198{ 4199 int i; 4200 struct scatterlist *sglist; 4201 u32 length; 4202 u32 ioadl_flags = 0; 4203 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4204 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4205 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4206 4207 length = scsi_cmd->request_bufflen; 4208 4209 if (length == 0) 4210 return 0; 4211 4212 if (scsi_cmd->use_sg) { 4213 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, 4214 scsi_cmd->request_buffer, 4215 scsi_cmd->use_sg, 4216 scsi_cmd->sc_data_direction); 4217 4218 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 4219 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 4220 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4221 ioarcb->write_data_transfer_length = cpu_to_be32(length); 4222 ioarcb->write_ioadl_len = 4223 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 4224 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 4225 ioadl_flags = IPR_IOADL_FLAGS_READ; 4226 ioarcb->read_data_transfer_length = cpu_to_be32(length); 4227 ioarcb->read_ioadl_len = 4228 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 4229 } 4230 4231 sglist = scsi_cmd->request_buffer; 4232 4233 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 4234 ioadl[i].flags_and_data_len = 4235 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i])); 4236 ioadl[i].address = 4237 cpu_to_be32(sg_dma_address(&sglist[i])); 4238 } 4239 4240 if (likely(ipr_cmd->dma_use_sg)) { 4241 ioadl[i-1].flags_and_data_len |= 4242 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 4243 return 0; 4244 } else 4245 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 4246 } else { 4247 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 4248 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 4249 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4250 ioarcb->write_data_transfer_length = cpu_to_be32(length); 4251 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4252 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 4253 ioadl_flags = IPR_IOADL_FLAGS_READ; 4254 ioarcb->read_data_transfer_length = cpu_to_be32(length); 4255 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4256 } 4257 4258 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev, 4259 scsi_cmd->request_buffer, length, 4260 scsi_cmd->sc_data_direction); 4261 4262 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) { 4263 ipr_cmd->dma_use_sg = 1; 4264 ioadl[0].flags_and_data_len = 4265 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST); 4266 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle); 4267 return 0; 4268 } else 4269 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n"); 4270 } 4271 4272 return -1; 4273} 4274 4275/** 4276 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes 4277 * @scsi_cmd: scsi command struct 4278 * 4279 * Return value: 4280 * task attributes 4281 **/ 4282static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) 4283{ 4284 u8 tag[2]; 4285 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; 4286 4287 if (scsi_populate_tag_msg(scsi_cmd, tag)) { 4288 switch (tag[0]) { 4289 case MSG_SIMPLE_TAG: 4290 rc = IPR_FLAGS_LO_SIMPLE_TASK; 4291 break; 4292 case MSG_HEAD_TAG: 4293 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; 4294 break; 4295 case MSG_ORDERED_TAG: 4296 rc = IPR_FLAGS_LO_ORDERED_TASK; 4297 break; 4298 }; 4299 } 4300 4301 return rc; 4302} 4303 4304/** 4305 * ipr_erp_done - Process completion of ERP for a device 4306 * @ipr_cmd: ipr command struct 4307 * 4308 * This function copies the sense buffer into the scsi_cmd 4309 * struct and pushes the scsi_done function. 4310 * 4311 * Return value: 4312 * nothing 4313 **/ 4314static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 4315{ 4316 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4317 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4318 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4319 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4320 4321 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 4322 scsi_cmd->result |= (DID_ERROR << 16); 4323 scmd_printk(KERN_ERR, scsi_cmd, 4324 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 4325 } else { 4326 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 4327 SCSI_SENSE_BUFFERSIZE); 4328 } 4329 4330 if (res) { 4331 if (!ipr_is_naca_model(res)) 4332 res->needs_sync_complete = 1; 4333 res->in_erp = 0; 4334 } 4335 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 4336 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4337 scsi_cmd->scsi_done(scsi_cmd); 4338} 4339 4340/** 4341 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 4342 * @ipr_cmd: ipr command struct 4343 * 4344 * Return value: 4345 * none 4346 **/ 4347static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 4348{ 4349 struct ipr_ioarcb *ioarcb; 4350 struct ipr_ioasa *ioasa; 4351 4352 ioarcb = &ipr_cmd->ioarcb; 4353 ioasa = &ipr_cmd->ioasa; 4354 4355 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 4356 ioarcb->write_data_transfer_length = 0; 4357 ioarcb->read_data_transfer_length = 0; 4358 ioarcb->write_ioadl_len = 0; 4359 ioarcb->read_ioadl_len = 0; 4360 ioasa->ioasc = 0; 4361 ioasa->residual_data_len = 0; 4362} 4363 4364/** 4365 * ipr_erp_request_sense - Send request sense to a device 4366 * @ipr_cmd: ipr command struct 4367 * 4368 * This function sends a request sense to a device as a result 4369 * of a check condition. 4370 * 4371 * Return value: 4372 * nothing 4373 **/ 4374static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 4375{ 4376 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4377 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4378 4379 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 4380 ipr_erp_done(ipr_cmd); 4381 return; 4382 } 4383 4384 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 4385 4386 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 4387 cmd_pkt->cdb[0] = REQUEST_SENSE; 4388 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 4389 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 4390 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 4391 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 4392 4393 ipr_cmd->ioadl[0].flags_and_data_len = 4394 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE); 4395 ipr_cmd->ioadl[0].address = 4396 cpu_to_be32(ipr_cmd->sense_buffer_dma); 4397 4398 ipr_cmd->ioarcb.read_ioadl_len = 4399 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4400 ipr_cmd->ioarcb.read_data_transfer_length = 4401 cpu_to_be32(SCSI_SENSE_BUFFERSIZE); 4402 4403 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 4404 IPR_REQUEST_SENSE_TIMEOUT * 2); 4405} 4406 4407/** 4408 * ipr_erp_cancel_all - Send cancel all to a device 4409 * @ipr_cmd: ipr command struct 4410 * 4411 * This function sends a cancel all to a device to clear the 4412 * queue. If we are running TCQ on the device, QERR is set to 1, 4413 * which means all outstanding ops have been dropped on the floor. 4414 * Cancel all will return them to us. 4415 * 4416 * Return value: 4417 * nothing 4418 **/ 4419static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 4420{ 4421 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4422 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4423 struct ipr_cmd_pkt *cmd_pkt; 4424 4425 res->in_erp = 1; 4426 4427 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 4428 4429 if (!scsi_get_tag_type(scsi_cmd->device)) { 4430 ipr_erp_request_sense(ipr_cmd); 4431 return; 4432 } 4433 4434 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4435 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4436 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4437 4438 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 4439 IPR_CANCEL_ALL_TIMEOUT); 4440} 4441 4442/** 4443 * ipr_dump_ioasa - Dump contents of IOASA 4444 * @ioa_cfg: ioa config struct 4445 * @ipr_cmd: ipr command struct 4446 * @res: resource entry struct 4447 * 4448 * This function is invoked by the interrupt handler when ops 4449 * fail. It will log the IOASA if appropriate. Only called 4450 * for GPDD ops. 4451 * 4452 * Return value: 4453 * none 4454 **/ 4455static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 4456 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res) 4457{ 4458 int i; 4459 u16 data_len; 4460 u32 ioasc, fd_ioasc; 4461 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4462 __be32 *ioasa_data = (__be32 *)ioasa; 4463 int error_index; 4464 4465 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK; 4466 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK; 4467 4468 if (0 == ioasc) 4469 return; 4470 4471 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 4472 return; 4473 4474 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc) 4475 error_index = ipr_get_error(fd_ioasc); 4476 else 4477 error_index = ipr_get_error(ioasc); 4478 4479 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 4480 /* Don't log an error if the IOA already logged one */ 4481 if (ioasa->ilid != 0) 4482 return; 4483 4484 if (!ipr_is_gscsi(res)) 4485 return; 4486 4487 if (ipr_error_table[error_index].log_ioasa == 0) 4488 return; 4489 } 4490 4491 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error); 4492 4493 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len)) 4494 data_len = sizeof(struct ipr_ioasa); 4495 else 4496 data_len = be16_to_cpu(ioasa->ret_stat_len); 4497 4498 ipr_err("IOASA Dump:\n"); 4499 4500 for (i = 0; i < data_len / 4; i += 4) { 4501 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 4502 be32_to_cpu(ioasa_data[i]), 4503 be32_to_cpu(ioasa_data[i+1]), 4504 be32_to_cpu(ioasa_data[i+2]), 4505 be32_to_cpu(ioasa_data[i+3])); 4506 } 4507} 4508 4509/** 4510 * ipr_gen_sense - Generate SCSI sense data from an IOASA 4511 * @ioasa: IOASA 4512 * @sense_buf: sense data buffer 4513 * 4514 * Return value: 4515 * none 4516 **/ 4517static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 4518{ 4519 u32 failing_lba; 4520 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 4521 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 4522 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4523 u32 ioasc = be32_to_cpu(ioasa->ioasc); 4524 4525 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 4526 4527 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 4528 return; 4529 4530 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 4531 4532 if (ipr_is_vset_device(res) && 4533 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 4534 ioasa->u.vset.failing_lba_hi != 0) { 4535 sense_buf[0] = 0x72; 4536 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 4537 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 4538 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 4539 4540 sense_buf[7] = 12; 4541 sense_buf[8] = 0; 4542 sense_buf[9] = 0x0A; 4543 sense_buf[10] = 0x80; 4544 4545 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 4546 4547 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 4548 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 4549 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 4550 sense_buf[15] = failing_lba & 0x000000ff; 4551 4552 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 4553 4554 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 4555 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 4556 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 4557 sense_buf[19] = failing_lba & 0x000000ff; 4558 } else { 4559 sense_buf[0] = 0x70; 4560 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 4561 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 4562 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 4563 4564 /* Illegal request */ 4565 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 4566 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 4567 sense_buf[7] = 10; /* additional length */ 4568 4569 /* IOARCB was in error */ 4570 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 4571 sense_buf[15] = 0xC0; 4572 else /* Parameter data was invalid */ 4573 sense_buf[15] = 0x80; 4574 4575 sense_buf[16] = 4576 ((IPR_FIELD_POINTER_MASK & 4577 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff; 4578 sense_buf[17] = 4579 (IPR_FIELD_POINTER_MASK & 4580 be32_to_cpu(ioasa->ioasc_specific)) & 0xff; 4581 } else { 4582 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 4583 if (ipr_is_vset_device(res)) 4584 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 4585 else 4586 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 4587 4588 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 4589 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 4590 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 4591 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 4592 sense_buf[6] = failing_lba & 0x000000ff; 4593 } 4594 4595 sense_buf[7] = 6; /* additional length */ 4596 } 4597 } 4598} 4599 4600/** 4601 * ipr_get_autosense - Copy autosense data to sense buffer 4602 * @ipr_cmd: ipr command struct 4603 * 4604 * This function copies the autosense buffer to the buffer 4605 * in the scsi_cmd, if there is autosense available. 4606 * 4607 * Return value: 4608 * 1 if autosense was available / 0 if not 4609 **/ 4610static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) 4611{ 4612 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4613 4614 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0) 4615 return 0; 4616 4617 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, 4618 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), 4619 SCSI_SENSE_BUFFERSIZE)); 4620 return 1; 4621} 4622 4623/** 4624 * ipr_erp_start - Process an error response for a SCSI op 4625 * @ioa_cfg: ioa config struct 4626 * @ipr_cmd: ipr command struct 4627 * 4628 * This function determines whether or not to initiate ERP 4629 * on the affected device. 4630 * 4631 * Return value: 4632 * nothing 4633 **/ 4634static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 4635 struct ipr_cmnd *ipr_cmd) 4636{ 4637 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4638 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4639 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4640 4641 if (!res) { 4642 ipr_scsi_eh_done(ipr_cmd); 4643 return; 4644 } 4645 4646 if (!ipr_is_gscsi(res)) 4647 ipr_gen_sense(ipr_cmd); 4648 4649 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 4650 4651 switch (ioasc & IPR_IOASC_IOASC_MASK) { 4652 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 4653 if (ipr_is_naca_model(res)) 4654 scsi_cmd->result |= (DID_ABORT << 16); 4655 else 4656 scsi_cmd->result |= (DID_IMM_RETRY << 16); 4657 break; 4658 case IPR_IOASC_IR_RESOURCE_HANDLE: 4659 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: 4660 scsi_cmd->result |= (DID_NO_CONNECT << 16); 4661 break; 4662 case IPR_IOASC_HW_SEL_TIMEOUT: 4663 scsi_cmd->result |= (DID_NO_CONNECT << 16); 4664 if (!ipr_is_naca_model(res)) 4665 res->needs_sync_complete = 1; 4666 break; 4667 case IPR_IOASC_SYNC_REQUIRED: 4668 if (!res->in_erp) 4669 res->needs_sync_complete = 1; 4670 scsi_cmd->result |= (DID_IMM_RETRY << 16); 4671 break; 4672 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 4673 case IPR_IOASA_IR_DUAL_IOA_DISABLED: 4674 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 4675 break; 4676 case IPR_IOASC_BUS_WAS_RESET: 4677 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 4678 /* 4679 * Report the bus reset and ask for a retry. The device 4680 * will give CC/UA the next command. 4681 */ 4682 if (!res->resetting_device) 4683 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 4684 scsi_cmd->result |= (DID_ERROR << 16); 4685 if (!ipr_is_naca_model(res)) 4686 res->needs_sync_complete = 1; 4687 break; 4688 case IPR_IOASC_HW_DEV_BUS_STATUS: 4689 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 4690 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 4691 if (!ipr_get_autosense(ipr_cmd)) { 4692 if (!ipr_is_naca_model(res)) { 4693 ipr_erp_cancel_all(ipr_cmd); 4694 return; 4695 } 4696 } 4697 } 4698 if (!ipr_is_naca_model(res)) 4699 res->needs_sync_complete = 1; 4700 break; 4701 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 4702 break; 4703 default: 4704 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 4705 scsi_cmd->result |= (DID_ERROR << 16); 4706 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) 4707 res->needs_sync_complete = 1; 4708 break; 4709 } 4710 4711 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 4712 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4713 scsi_cmd->scsi_done(scsi_cmd); 4714} 4715 4716/** 4717 * ipr_scsi_done - mid-layer done function 4718 * @ipr_cmd: ipr command struct 4719 * 4720 * This function is invoked by the interrupt handler for 4721 * ops generated by the SCSI mid-layer 4722 * 4723 * Return value: 4724 * none 4725 **/ 4726static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 4727{ 4728 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4729 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4730 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4731 4732 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len); 4733 4734 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 4735 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 4736 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4737 scsi_cmd->scsi_done(scsi_cmd); 4738 } else 4739 ipr_erp_start(ioa_cfg, ipr_cmd); 4740} 4741 4742/** 4743 * ipr_queuecommand - Queue a mid-layer request 4744 * @scsi_cmd: scsi command struct 4745 * @done: done function 4746 * 4747 * This function queues a request generated by the mid-layer. 4748 * 4749 * Return value: 4750 * 0 on success 4751 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 4752 * SCSI_MLQUEUE_HOST_BUSY if host is busy 4753 **/ 4754static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, 4755 void (*done) (struct scsi_cmnd *)) 4756{ 4757 struct ipr_ioa_cfg *ioa_cfg; 4758 struct ipr_resource_entry *res; 4759 struct ipr_ioarcb *ioarcb; 4760 struct ipr_cmnd *ipr_cmd; 4761 int rc = 0; 4762 4763 scsi_cmd->scsi_done = done; 4764 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 4765 res = scsi_cmd->device->hostdata; 4766 scsi_cmd->result = (DID_OK << 16); 4767 4768 /* 4769 * We are currently blocking all devices due to a host reset 4770 * We have told the host to stop giving us new requests, but 4771 * ERP ops don't count. FIXME 4772 */ 4773 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) 4774 return SCSI_MLQUEUE_HOST_BUSY; 4775 4776 /* 4777 * FIXME - Create scsi_set_host_offline interface 4778 * and the ioa_is_dead check can be removed 4779 */ 4780 if (unlikely(ioa_cfg->ioa_is_dead || !res)) { 4781 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 4782 scsi_cmd->result = (DID_NO_CONNECT << 16); 4783 scsi_cmd->scsi_done(scsi_cmd); 4784 return 0; 4785 } 4786 4787 if (ipr_is_gata(res) && res->sata_port) 4788 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap); 4789 4790 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4791 ioarcb = &ipr_cmd->ioarcb; 4792 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 4793 4794 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 4795 ipr_cmd->scsi_cmd = scsi_cmd; 4796 ioarcb->res_handle = res->cfgte.res_handle; 4797 ipr_cmd->done = ipr_scsi_done; 4798 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 4799 4800 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 4801 if (scsi_cmd->underflow == 0) 4802 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 4803 4804 if (res->needs_sync_complete) { 4805 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 4806 res->needs_sync_complete = 0; 4807 } 4808 4809 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 4810 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 4811 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 4812 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); 4813 } 4814 4815 if (scsi_cmd->cmnd[0] >= 0xC0 && 4816 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) 4817 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4818 4819 if (likely(rc == 0)) 4820 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 4821 4822 if (likely(rc == 0)) { 4823 mb(); 4824 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 4825 ioa_cfg->regs.ioarrin_reg); 4826 } else { 4827 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4828 return SCSI_MLQUEUE_HOST_BUSY; 4829 } 4830 4831 return 0; 4832} 4833 4834/** 4835 * ipr_ioctl - IOCTL handler 4836 * @sdev: scsi device struct 4837 * @cmd: IOCTL cmd 4838 * @arg: IOCTL arg 4839 * 4840 * Return value: 4841 * 0 on success / other on failure 4842 **/ 4843static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) 4844{ 4845 struct ipr_resource_entry *res; 4846 4847 res = (struct ipr_resource_entry *)sdev->hostdata; 4848 if (res && ipr_is_gata(res)) 4849 return ata_scsi_ioctl(sdev, cmd, arg); 4850 4851 return -EINVAL; 4852} 4853 4854/** 4855 * ipr_info - Get information about the card/driver 4856 * @scsi_host: scsi host struct 4857 * 4858 * Return value: 4859 * pointer to buffer with description string 4860 **/ 4861static const char * ipr_ioa_info(struct Scsi_Host *host) 4862{ 4863 static char buffer[512]; 4864 struct ipr_ioa_cfg *ioa_cfg; 4865 unsigned long lock_flags = 0; 4866 4867 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 4868 4869 spin_lock_irqsave(host->host_lock, lock_flags); 4870 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 4871 spin_unlock_irqrestore(host->host_lock, lock_flags); 4872 4873 return buffer; 4874} 4875 4876static struct scsi_host_template driver_template = { 4877 .module = THIS_MODULE, 4878 .name = "IPR", 4879 .info = ipr_ioa_info, 4880 .ioctl = ipr_ioctl, 4881 .queuecommand = ipr_queuecommand, 4882 .eh_abort_handler = ipr_eh_abort, 4883 .eh_device_reset_handler = ipr_eh_dev_reset, 4884 .eh_host_reset_handler = ipr_eh_host_reset, 4885 .slave_alloc = ipr_slave_alloc, 4886 .slave_configure = ipr_slave_configure, 4887 .slave_destroy = ipr_slave_destroy, 4888 .target_alloc = ipr_target_alloc, 4889 .target_destroy = ipr_target_destroy, 4890 .change_queue_depth = ipr_change_queue_depth, 4891 .change_queue_type = ipr_change_queue_type, 4892 .bios_param = ipr_biosparam, 4893 .can_queue = IPR_MAX_COMMANDS, 4894 .this_id = -1, 4895 .sg_tablesize = IPR_MAX_SGLIST, 4896 .max_sectors = IPR_IOA_MAX_SECTORS, 4897 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 4898 .use_clustering = ENABLE_CLUSTERING, 4899 .shost_attrs = ipr_ioa_attrs, 4900 .sdev_attrs = ipr_dev_attrs, 4901 .proc_name = IPR_NAME 4902}; 4903 4904/** 4905 * ipr_ata_phy_reset - libata phy_reset handler 4906 * @ap: ata port to reset 4907 * 4908 **/ 4909static void ipr_ata_phy_reset(struct ata_port *ap) 4910{ 4911 unsigned long flags; 4912 struct ipr_sata_port *sata_port = ap->private_data; 4913 struct ipr_resource_entry *res = sata_port->res; 4914 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 4915 int rc; 4916 4917 ENTER; 4918 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4919 while(ioa_cfg->in_reset_reload) { 4920 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4921 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4922 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4923 } 4924 4925 if (!ioa_cfg->allow_cmds) 4926 goto out_unlock; 4927 4928 rc = ipr_device_reset(ioa_cfg, res); 4929 4930 if (rc) { 4931 ap->ops->port_disable(ap); 4932 goto out_unlock; 4933 } 4934 4935 switch(res->cfgte.proto) { 4936 case IPR_PROTO_SATA: 4937 case IPR_PROTO_SAS_STP: 4938 ap->device[0].class = ATA_DEV_ATA; 4939 break; 4940 case IPR_PROTO_SATA_ATAPI: 4941 case IPR_PROTO_SAS_STP_ATAPI: 4942 ap->device[0].class = ATA_DEV_ATAPI; 4943 break; 4944 default: 4945 ap->device[0].class = ATA_DEV_UNKNOWN; 4946 ap->ops->port_disable(ap); 4947 break; 4948 }; 4949 4950out_unlock: 4951 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4952 LEAVE; 4953} 4954 4955/** 4956 * ipr_ata_post_internal - Cleanup after an internal command 4957 * @qc: ATA queued command 4958 * 4959 * Return value: 4960 * none 4961 **/ 4962static void ipr_ata_post_internal(struct ata_queued_cmd *qc) 4963{ 4964 struct ipr_sata_port *sata_port = qc->ap->private_data; 4965 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 4966 struct ipr_cmnd *ipr_cmd; 4967 unsigned long flags; 4968 4969 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4970 while(ioa_cfg->in_reset_reload) { 4971 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4972 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4973 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4974 } 4975 4976 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4977 if (ipr_cmd->qc == qc) { 4978 ipr_device_reset(ioa_cfg, sata_port->res); 4979 break; 4980 } 4981 } 4982 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4983} 4984 4985/** 4986 * ipr_tf_read - Read the current ATA taskfile for the ATA port 4987 * @ap: ATA port 4988 * @tf: destination ATA taskfile 4989 * 4990 * Return value: 4991 * none 4992 **/ 4993static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf) 4994{ 4995 struct ipr_sata_port *sata_port = ap->private_data; 4996 struct ipr_ioasa_gata *g = &sata_port->ioasa; 4997 4998 tf->feature = g->error; 4999 tf->nsect = g->nsect; 5000 tf->lbal = g->lbal; 5001 tf->lbam = g->lbam; 5002 tf->lbah = g->lbah; 5003 tf->device = g->device; 5004 tf->command = g->status; 5005 tf->hob_nsect = g->hob_nsect; 5006 tf->hob_lbal = g->hob_lbal; 5007 tf->hob_lbam = g->hob_lbam; 5008 tf->hob_lbah = g->hob_lbah; 5009 tf->ctl = g->alt_status; 5010} 5011 5012/** 5013 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure 5014 * @regs: destination 5015 * @tf: source ATA taskfile 5016 * 5017 * Return value: 5018 * none 5019 **/ 5020static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs, 5021 struct ata_taskfile *tf) 5022{ 5023 regs->feature = tf->feature; 5024 regs->nsect = tf->nsect; 5025 regs->lbal = tf->lbal; 5026 regs->lbam = tf->lbam; 5027 regs->lbah = tf->lbah; 5028 regs->device = tf->device; 5029 regs->command = tf->command; 5030 regs->hob_feature = tf->hob_feature; 5031 regs->hob_nsect = tf->hob_nsect; 5032 regs->hob_lbal = tf->hob_lbal; 5033 regs->hob_lbam = tf->hob_lbam; 5034 regs->hob_lbah = tf->hob_lbah; 5035 regs->ctl = tf->ctl; 5036} 5037 5038/** 5039 * ipr_sata_done - done function for SATA commands 5040 * @ipr_cmd: ipr command struct 5041 * 5042 * This function is invoked by the interrupt handler for 5043 * ops generated by the SCSI mid-layer to SATA devices 5044 * 5045 * Return value: 5046 * none 5047 **/ 5048static void ipr_sata_done(struct ipr_cmnd *ipr_cmd) 5049{ 5050 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5051 struct ata_queued_cmd *qc = ipr_cmd->qc; 5052 struct ipr_sata_port *sata_port = qc->ap->private_data; 5053 struct ipr_resource_entry *res = sata_port->res; 5054 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5055 5056 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata, 5057 sizeof(struct ipr_ioasa_gata)); 5058 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 5059 5060 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET) 5061 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus, 5062 res->cfgte.res_addr.target); 5063 5064 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 5065 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status); 5066 else 5067 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status); 5068 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5069 ata_qc_complete(qc); 5070} 5071 5072/** 5073 * ipr_build_ata_ioadl - Build an ATA scatter/gather list 5074 * @ipr_cmd: ipr command struct 5075 * @qc: ATA queued command 5076 * 5077 **/ 5078static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, 5079 struct ata_queued_cmd *qc) 5080{ 5081 u32 ioadl_flags = 0; 5082 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5083 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5084 int len = qc->nbytes + qc->pad_len; 5085 struct scatterlist *sg; 5086 5087 if (len == 0) 5088 return; 5089 5090 if (qc->dma_dir == DMA_TO_DEVICE) { 5091 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5092 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5093 ioarcb->write_data_transfer_length = cpu_to_be32(len); 5094 ioarcb->write_ioadl_len = 5095 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5096 } else if (qc->dma_dir == DMA_FROM_DEVICE) { 5097 ioadl_flags = IPR_IOADL_FLAGS_READ; 5098 ioarcb->read_data_transfer_length = cpu_to_be32(len); 5099 ioarcb->read_ioadl_len = 5100 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5101 } 5102 5103 ata_for_each_sg(sg, qc) { 5104 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 5105 ioadl->address = cpu_to_be32(sg_dma_address(sg)); 5106 if (ata_sg_is_last(sg, qc)) 5107 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5108 else 5109 ioadl++; 5110 } 5111} 5112 5113/** 5114 * ipr_qc_issue - Issue a SATA qc to a device 5115 * @qc: queued command 5116 * 5117 * Return value: 5118 * 0 if success 5119 **/ 5120static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) 5121{ 5122 struct ata_port *ap = qc->ap; 5123 struct ipr_sata_port *sata_port = ap->private_data; 5124 struct ipr_resource_entry *res = sata_port->res; 5125 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5126 struct ipr_cmnd *ipr_cmd; 5127 struct ipr_ioarcb *ioarcb; 5128 struct ipr_ioarcb_ata_regs *regs; 5129 5130 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead)) 5131 return -EIO; 5132 5133 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5134 ioarcb = &ipr_cmd->ioarcb; 5135 regs = &ioarcb->add_data.u.regs; 5136 5137 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data)); 5138 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs)); 5139 5140 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 5141 ipr_cmd->qc = qc; 5142 ipr_cmd->done = ipr_sata_done; 5143 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 5144 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU; 5145 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 5146 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 5147 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem; 5148 5149 ipr_build_ata_ioadl(ipr_cmd, qc); 5150 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 5151 ipr_copy_sata_tf(regs, &qc->tf); 5152 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN); 5153 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 5154 5155 switch (qc->tf.protocol) { 5156 case ATA_PROT_NODATA: 5157 case ATA_PROT_PIO: 5158 break; 5159 5160 case ATA_PROT_DMA: 5161 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 5162 break; 5163 5164 case ATA_PROT_ATAPI: 5165 case ATA_PROT_ATAPI_NODATA: 5166 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 5167 break; 5168 5169 case ATA_PROT_ATAPI_DMA: 5170 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 5171 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 5172 break; 5173 5174 default: 5175 WARN_ON(1); 5176 return -1; 5177 } 5178 5179 mb(); 5180 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr), 5181 ioa_cfg->regs.ioarrin_reg); 5182 return 0; 5183} 5184 5185/** 5186 * ipr_ata_check_status - Return last ATA status 5187 * @ap: ATA port 5188 * 5189 * Return value: 5190 * ATA status 5191 **/ 5192static u8 ipr_ata_check_status(struct ata_port *ap) 5193{ 5194 struct ipr_sata_port *sata_port = ap->private_data; 5195 return sata_port->ioasa.status; 5196} 5197 5198/** 5199 * ipr_ata_check_altstatus - Return last ATA altstatus 5200 * @ap: ATA port 5201 * 5202 * Return value: 5203 * Alt ATA status 5204 **/ 5205static u8 ipr_ata_check_altstatus(struct ata_port *ap) 5206{ 5207 struct ipr_sata_port *sata_port = ap->private_data; 5208 return sata_port->ioasa.alt_status; 5209} 5210 5211static struct ata_port_operations ipr_sata_ops = { 5212 .port_disable = ata_port_disable, 5213 .check_status = ipr_ata_check_status, 5214 .check_altstatus = ipr_ata_check_altstatus, 5215 .dev_select = ata_noop_dev_select, 5216 .phy_reset = ipr_ata_phy_reset, 5217 .post_internal_cmd = ipr_ata_post_internal, 5218 .tf_read = ipr_tf_read, 5219 .qc_prep = ata_noop_qc_prep, 5220 .qc_issue = ipr_qc_issue, 5221 .port_start = ata_sas_port_start, 5222 .port_stop = ata_sas_port_stop 5223}; 5224 5225static struct ata_port_info sata_port_info = { 5226 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET | 5227 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA, 5228 .pio_mask = 0x10, /* pio4 */ 5229 .mwdma_mask = 0x07, 5230 .udma_mask = 0x7f, /* udma0-6 */ 5231 .port_ops = &ipr_sata_ops 5232}; 5233 5234#ifdef CONFIG_PPC_PSERIES 5235static const u16 ipr_blocked_processors[] = { 5236 PV_NORTHSTAR, 5237 PV_PULSAR, 5238 PV_POWER4, 5239 PV_ICESTAR, 5240 PV_SSTAR, 5241 PV_POWER4p, 5242 PV_630, 5243 PV_630p 5244}; 5245 5246/** 5247 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 5248 * @ioa_cfg: ioa cfg struct 5249 * 5250 * Adapters that use Gemstone revision < 3.1 do not work reliably on 5251 * certain pSeries hardware. This function determines if the given 5252 * adapter is in one of these confgurations or not. 5253 * 5254 * Return value: 5255 * 1 if adapter is not supported / 0 if adapter is supported 5256 **/ 5257static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 5258{ 5259 u8 rev_id; 5260 int i; 5261 5262 if (ioa_cfg->type == 0x5702) { 5263 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID, 5264 &rev_id) == PCIBIOS_SUCCESSFUL) { 5265 if (rev_id < 4) { 5266 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ 5267 if (__is_processor(ipr_blocked_processors[i])) 5268 return 1; 5269 } 5270 } 5271 } 5272 } 5273 return 0; 5274} 5275#else 5276#define ipr_invalid_adapter(ioa_cfg) 0 5277#endif 5278 5279/** 5280 * ipr_ioa_bringdown_done - IOA bring down completion. 5281 * @ipr_cmd: ipr command struct 5282 * 5283 * This function processes the completion of an adapter bring down. 5284 * It wakes any reset sleepers. 5285 * 5286 * Return value: 5287 * IPR_RC_JOB_RETURN 5288 **/ 5289static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 5290{ 5291 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5292 5293 ENTER; 5294 ioa_cfg->in_reset_reload = 0; 5295 ioa_cfg->reset_retries = 0; 5296 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5297 wake_up_all(&ioa_cfg->reset_wait_q); 5298 5299 spin_unlock_irq(ioa_cfg->host->host_lock); 5300 scsi_unblock_requests(ioa_cfg->host); 5301 spin_lock_irq(ioa_cfg->host->host_lock); 5302 LEAVE; 5303 5304 return IPR_RC_JOB_RETURN; 5305} 5306 5307/** 5308 * ipr_ioa_reset_done - IOA reset completion. 5309 * @ipr_cmd: ipr command struct 5310 * 5311 * This function processes the completion of an adapter reset. 5312 * It schedules any necessary mid-layer add/removes and 5313 * wakes any reset sleepers. 5314 * 5315 * Return value: 5316 * IPR_RC_JOB_RETURN 5317 **/ 5318static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 5319{ 5320 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5321 struct ipr_resource_entry *res; 5322 struct ipr_hostrcb *hostrcb, *temp; 5323 int i = 0; 5324 5325 ENTER; 5326 ioa_cfg->in_reset_reload = 0; 5327 ioa_cfg->allow_cmds = 1; 5328 ioa_cfg->reset_cmd = NULL; 5329 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 5330 5331 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 5332 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { 5333 ipr_trace; 5334 break; 5335 } 5336 } 5337 schedule_work(&ioa_cfg->work_q); 5338 5339 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { 5340 list_del(&hostrcb->queue); 5341 if (i++ < IPR_NUM_LOG_HCAMS) 5342 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 5343 else 5344 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 5345 } 5346 5347 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 5348 5349 ioa_cfg->reset_retries = 0; 5350 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5351 wake_up_all(&ioa_cfg->reset_wait_q); 5352 5353 spin_unlock_irq(ioa_cfg->host->host_lock); 5354 scsi_unblock_requests(ioa_cfg->host); 5355 spin_lock_irq(ioa_cfg->host->host_lock); 5356 5357 if (!ioa_cfg->allow_cmds) 5358 scsi_block_requests(ioa_cfg->host); 5359 5360 LEAVE; 5361 return IPR_RC_JOB_RETURN; 5362} 5363 5364/** 5365 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 5366 * @supported_dev: supported device struct 5367 * @vpids: vendor product id struct 5368 * 5369 * Return value: 5370 * none 5371 **/ 5372static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 5373 struct ipr_std_inq_vpids *vpids) 5374{ 5375 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 5376 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 5377 supported_dev->num_records = 1; 5378 supported_dev->data_length = 5379 cpu_to_be16(sizeof(struct ipr_supported_device)); 5380 supported_dev->reserved = 0; 5381} 5382 5383/** 5384 * ipr_set_supported_devs - Send Set Supported Devices for a device 5385 * @ipr_cmd: ipr command struct 5386 * 5387 * This function send a Set Supported Devices to the adapter 5388 * 5389 * Return value: 5390 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5391 **/ 5392static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 5393{ 5394 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5395 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 5396 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5397 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5398 struct ipr_resource_entry *res = ipr_cmd->u.res; 5399 5400 ipr_cmd->job_step = ipr_ioa_reset_done; 5401 5402 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 5403 if (!ipr_is_scsi_disk(res)) 5404 continue; 5405 5406 ipr_cmd->u.res = res; 5407 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids); 5408 5409 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5410 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5411 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5412 5413 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 5414 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 5415 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 5416 5417 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | 5418 sizeof(struct ipr_supported_device)); 5419 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma + 5420 offsetof(struct ipr_misc_cbs, supp_dev)); 5421 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5422 ioarcb->write_data_transfer_length = 5423 cpu_to_be32(sizeof(struct ipr_supported_device)); 5424 5425 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 5426 IPR_SET_SUP_DEVICE_TIMEOUT); 5427 5428 ipr_cmd->job_step = ipr_set_supported_devs; 5429 return IPR_RC_JOB_RETURN; 5430 } 5431 5432 return IPR_RC_JOB_CONTINUE; 5433} 5434 5435/** 5436 * ipr_setup_write_cache - Disable write cache if needed 5437 * @ipr_cmd: ipr command struct 5438 * 5439 * This function sets up adapters write cache to desired setting 5440 * 5441 * Return value: 5442 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5443 **/ 5444static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd) 5445{ 5446 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5447 5448 ipr_cmd->job_step = ipr_set_supported_devs; 5449 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 5450 struct ipr_resource_entry, queue); 5451 5452 if (ioa_cfg->cache_state != CACHE_DISABLED) 5453 return IPR_RC_JOB_CONTINUE; 5454 5455 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5456 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5457 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 5458 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 5459 5460 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5461 5462 return IPR_RC_JOB_RETURN; 5463} 5464 5465/** 5466 * ipr_get_mode_page - Locate specified mode page 5467 * @mode_pages: mode page buffer 5468 * @page_code: page code to find 5469 * @len: minimum required length for mode page 5470 * 5471 * Return value: 5472 * pointer to mode page / NULL on failure 5473 **/ 5474static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 5475 u32 page_code, u32 len) 5476{ 5477 struct ipr_mode_page_hdr *mode_hdr; 5478 u32 page_length; 5479 u32 length; 5480 5481 if (!mode_pages || (mode_pages->hdr.length == 0)) 5482 return NULL; 5483 5484 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 5485 mode_hdr = (struct ipr_mode_page_hdr *) 5486 (mode_pages->data + mode_pages->hdr.block_desc_len); 5487 5488 while (length) { 5489 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 5490 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 5491 return mode_hdr; 5492 break; 5493 } else { 5494 page_length = (sizeof(struct ipr_mode_page_hdr) + 5495 mode_hdr->page_length); 5496 length -= page_length; 5497 mode_hdr = (struct ipr_mode_page_hdr *) 5498 ((unsigned long)mode_hdr + page_length); 5499 } 5500 } 5501 return NULL; 5502} 5503 5504/** 5505 * ipr_check_term_power - Check for term power errors 5506 * @ioa_cfg: ioa config struct 5507 * @mode_pages: IOAFP mode pages buffer 5508 * 5509 * Check the IOAFP's mode page 28 for term power errors 5510 * 5511 * Return value: 5512 * nothing 5513 **/ 5514static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 5515 struct ipr_mode_pages *mode_pages) 5516{ 5517 int i; 5518 int entry_length; 5519 struct ipr_dev_bus_entry *bus; 5520 struct ipr_mode_page28 *mode_page; 5521 5522 mode_page = ipr_get_mode_page(mode_pages, 0x28, 5523 sizeof(struct ipr_mode_page28)); 5524 5525 entry_length = mode_page->entry_length; 5526 5527 bus = mode_page->bus; 5528 5529 for (i = 0; i < mode_page->num_entries; i++) { 5530 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 5531 dev_err(&ioa_cfg->pdev->dev, 5532 "Term power is absent on scsi bus %d\n", 5533 bus->res_addr.bus); 5534 } 5535 5536 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 5537 } 5538} 5539 5540/** 5541 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 5542 * @ioa_cfg: ioa config struct 5543 * 5544 * Looks through the config table checking for SES devices. If 5545 * the SES device is in the SES table indicating a maximum SCSI 5546 * bus speed, the speed is limited for the bus. 5547 * 5548 * Return value: 5549 * none 5550 **/ 5551static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 5552{ 5553 u32 max_xfer_rate; 5554 int i; 5555 5556 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 5557 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 5558 ioa_cfg->bus_attr[i].bus_width); 5559 5560 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 5561 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 5562 } 5563} 5564 5565/** 5566 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 5567 * @ioa_cfg: ioa config struct 5568 * @mode_pages: mode page 28 buffer 5569 * 5570 * Updates mode page 28 based on driver configuration 5571 * 5572 * Return value: 5573 * none 5574 **/ 5575static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 5576 struct ipr_mode_pages *mode_pages) 5577{ 5578 int i, entry_length; 5579 struct ipr_dev_bus_entry *bus; 5580 struct ipr_bus_attributes *bus_attr; 5581 struct ipr_mode_page28 *mode_page; 5582 5583 mode_page = ipr_get_mode_page(mode_pages, 0x28, 5584 sizeof(struct ipr_mode_page28)); 5585 5586 entry_length = mode_page->entry_length; 5587 5588 /* Loop for each device bus entry */ 5589 for (i = 0, bus = mode_page->bus; 5590 i < mode_page->num_entries; 5591 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 5592 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 5593 dev_err(&ioa_cfg->pdev->dev, 5594 "Invalid resource address reported: 0x%08X\n", 5595 IPR_GET_PHYS_LOC(bus->res_addr)); 5596 continue; 5597 } 5598 5599 bus_attr = &ioa_cfg->bus_attr[i]; 5600 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 5601 bus->bus_width = bus_attr->bus_width; 5602 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 5603 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 5604 if (bus_attr->qas_enabled) 5605 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 5606 else 5607 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 5608 } 5609} 5610 5611/** 5612 * ipr_build_mode_select - Build a mode select command 5613 * @ipr_cmd: ipr command struct 5614 * @res_handle: resource handle to send command to 5615 * @parm: Byte 2 of Mode Sense command 5616 * @dma_addr: DMA buffer address 5617 * @xfer_len: data transfer length 5618 * 5619 * Return value: 5620 * none 5621 **/ 5622static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 5623 __be32 res_handle, u8 parm, u32 dma_addr, 5624 u8 xfer_len) 5625{ 5626 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5627 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5628 5629 ioarcb->res_handle = res_handle; 5630 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5631 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5632 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 5633 ioarcb->cmd_pkt.cdb[1] = parm; 5634 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5635 5636 ioadl->flags_and_data_len = 5637 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len); 5638 ioadl->address = cpu_to_be32(dma_addr); 5639 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5640 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len); 5641} 5642 5643/** 5644 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 5645 * @ipr_cmd: ipr command struct 5646 * 5647 * This function sets up the SCSI bus attributes and sends 5648 * a Mode Select for Page 28 to activate them. 5649 * 5650 * Return value: 5651 * IPR_RC_JOB_RETURN 5652 **/ 5653static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 5654{ 5655 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5656 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 5657 int length; 5658 5659 ENTER; 5660 ipr_scsi_bus_speed_limit(ioa_cfg); 5661 ipr_check_term_power(ioa_cfg, mode_pages); 5662 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 5663 length = mode_pages->hdr.length + 1; 5664 mode_pages->hdr.length = 0; 5665 5666 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 5667 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 5668 length); 5669 5670 ipr_cmd->job_step = ipr_setup_write_cache; 5671 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5672 5673 LEAVE; 5674 return IPR_RC_JOB_RETURN; 5675} 5676 5677/** 5678 * ipr_build_mode_sense - Builds a mode sense command 5679 * @ipr_cmd: ipr command struct 5680 * @res: resource entry struct 5681 * @parm: Byte 2 of mode sense command 5682 * @dma_addr: DMA address of mode sense buffer 5683 * @xfer_len: Size of DMA buffer 5684 * 5685 * Return value: 5686 * none 5687 **/ 5688static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 5689 __be32 res_handle, 5690 u8 parm, u32 dma_addr, u8 xfer_len) 5691{ 5692 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5693 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5694 5695 ioarcb->res_handle = res_handle; 5696 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 5697 ioarcb->cmd_pkt.cdb[2] = parm; 5698 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5699 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5700 5701 ioadl->flags_and_data_len = 5702 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 5703 ioadl->address = cpu_to_be32(dma_addr); 5704 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5705 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 5706} 5707 5708/** 5709 * ipr_reset_cmd_failed - Handle failure of IOA reset command 5710 * @ipr_cmd: ipr command struct 5711 * 5712 * This function handles the failure of an IOA bringup command. 5713 * 5714 * Return value: 5715 * IPR_RC_JOB_RETURN 5716 **/ 5717static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 5718{ 5719 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5720 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5721 5722 dev_err(&ioa_cfg->pdev->dev, 5723 "0x%02X failed with IOASC: 0x%08X\n", 5724 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 5725 5726 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5727 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5728 return IPR_RC_JOB_RETURN; 5729} 5730 5731/** 5732 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 5733 * @ipr_cmd: ipr command struct 5734 * 5735 * This function handles the failure of a Mode Sense to the IOAFP. 5736 * Some adapters do not handle all mode pages. 5737 * 5738 * Return value: 5739 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5740 **/ 5741static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 5742{ 5743 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5744 5745 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 5746 ipr_cmd->job_step = ipr_setup_write_cache; 5747 return IPR_RC_JOB_CONTINUE; 5748 } 5749 5750 return ipr_reset_cmd_failed(ipr_cmd); 5751} 5752 5753/** 5754 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 5755 * @ipr_cmd: ipr command struct 5756 * 5757 * This function send a Page 28 mode sense to the IOA to 5758 * retrieve SCSI bus attributes. 5759 * 5760 * Return value: 5761 * IPR_RC_JOB_RETURN 5762 **/ 5763static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 5764{ 5765 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5766 5767 ENTER; 5768 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 5769 0x28, ioa_cfg->vpd_cbs_dma + 5770 offsetof(struct ipr_misc_cbs, mode_pages), 5771 sizeof(struct ipr_mode_pages)); 5772 5773 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 5774 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 5775 5776 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5777 5778 LEAVE; 5779 return IPR_RC_JOB_RETURN; 5780} 5781 5782/** 5783 * ipr_init_res_table - Initialize the resource table 5784 * @ipr_cmd: ipr command struct 5785 * 5786 * This function looks through the existing resource table, comparing 5787 * it with the config table. This function will take care of old/new 5788 * devices and schedule adding/removing them from the mid-layer 5789 * as appropriate. 5790 * 5791 * Return value: 5792 * IPR_RC_JOB_CONTINUE 5793 **/ 5794static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 5795{ 5796 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5797 struct ipr_resource_entry *res, *temp; 5798 struct ipr_config_table_entry *cfgte; 5799 int found, i; 5800 LIST_HEAD(old_res); 5801 5802 ENTER; 5803 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ) 5804 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 5805 5806 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 5807 list_move_tail(&res->queue, &old_res); 5808 5809 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) { 5810 cfgte = &ioa_cfg->cfg_table->dev[i]; 5811 found = 0; 5812 5813 list_for_each_entry_safe(res, temp, &old_res, queue) { 5814 if (!memcmp(&res->cfgte.res_addr, 5815 &cfgte->res_addr, sizeof(cfgte->res_addr))) { 5816 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5817 found = 1; 5818 break; 5819 } 5820 } 5821 5822 if (!found) { 5823 if (list_empty(&ioa_cfg->free_res_q)) { 5824 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 5825 break; 5826 } 5827 5828 found = 1; 5829 res = list_entry(ioa_cfg->free_res_q.next, 5830 struct ipr_resource_entry, queue); 5831 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5832 ipr_init_res_entry(res); 5833 res->add_to_ml = 1; 5834 } 5835 5836 if (found) 5837 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 5838 } 5839 5840 list_for_each_entry_safe(res, temp, &old_res, queue) { 5841 if (res->sdev) { 5842 res->del_from_ml = 1; 5843 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE; 5844 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5845 } else { 5846 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 5847 } 5848 } 5849 5850 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 5851 5852 LEAVE; 5853 return IPR_RC_JOB_CONTINUE; 5854} 5855 5856/** 5857 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 5858 * @ipr_cmd: ipr command struct 5859 * 5860 * This function sends a Query IOA Configuration command 5861 * to the adapter to retrieve the IOA configuration table. 5862 * 5863 * Return value: 5864 * IPR_RC_JOB_RETURN 5865 **/ 5866static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 5867{ 5868 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5869 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5870 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5871 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 5872 5873 ENTER; 5874 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 5875 ucode_vpd->major_release, ucode_vpd->card_type, 5876 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 5877 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5878 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5879 5880 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 5881 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff; 5882 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff; 5883 5884 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5885 ioarcb->read_data_transfer_length = 5886 cpu_to_be32(sizeof(struct ipr_config_table)); 5887 5888 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma); 5889 ioadl->flags_and_data_len = 5890 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table)); 5891 5892 ipr_cmd->job_step = ipr_init_res_table; 5893 5894 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5895 5896 LEAVE; 5897 return IPR_RC_JOB_RETURN; 5898} 5899 5900/** 5901 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 5902 * @ipr_cmd: ipr command struct 5903 * 5904 * This utility function sends an inquiry to the adapter. 5905 * 5906 * Return value: 5907 * none 5908 **/ 5909static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 5910 u32 dma_addr, u8 xfer_len) 5911{ 5912 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5913 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5914 5915 ENTER; 5916 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5917 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5918 5919 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 5920 ioarcb->cmd_pkt.cdb[1] = flags; 5921 ioarcb->cmd_pkt.cdb[2] = page; 5922 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5923 5924 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5925 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 5926 5927 ioadl->address = cpu_to_be32(dma_addr); 5928 ioadl->flags_and_data_len = 5929 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 5930 5931 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5932 LEAVE; 5933} 5934 5935/** 5936 * ipr_inquiry_page_supported - Is the given inquiry page supported 5937 * @page0: inquiry page 0 buffer 5938 * @page: page code. 5939 * 5940 * This function determines if the specified inquiry page is supported. 5941 * 5942 * Return value: 5943 * 1 if page is supported / 0 if not 5944 **/ 5945static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 5946{ 5947 int i; 5948 5949 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 5950 if (page0->page[i] == page) 5951 return 1; 5952 5953 return 0; 5954} 5955 5956/** 5957 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 5958 * @ipr_cmd: ipr command struct 5959 * 5960 * This function sends a Page 3 inquiry to the adapter 5961 * to retrieve software VPD information. 5962 * 5963 * Return value: 5964 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5965 **/ 5966static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 5967{ 5968 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5969 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 5970 5971 ENTER; 5972 5973 if (!ipr_inquiry_page_supported(page0, 1)) 5974 ioa_cfg->cache_state = CACHE_NONE; 5975 5976 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 5977 5978 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 5979 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 5980 sizeof(struct ipr_inquiry_page3)); 5981 5982 LEAVE; 5983 return IPR_RC_JOB_RETURN; 5984} 5985 5986/** 5987 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 5988 * @ipr_cmd: ipr command struct 5989 * 5990 * This function sends a Page 0 inquiry to the adapter 5991 * to retrieve supported inquiry pages. 5992 * 5993 * Return value: 5994 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5995 **/ 5996static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 5997{ 5998 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5999 char type[5]; 6000 6001 ENTER; 6002 6003 /* Grab the type out of the VPD and store it away */ 6004 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 6005 type[4] = '\0'; 6006 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 6007 6008 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 6009 6010 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 6011 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 6012 sizeof(struct ipr_inquiry_page0)); 6013 6014 LEAVE; 6015 return IPR_RC_JOB_RETURN; 6016} 6017 6018/** 6019 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 6020 * @ipr_cmd: ipr command struct 6021 * 6022 * This function sends a standard inquiry to the adapter. 6023 * 6024 * Return value: 6025 * IPR_RC_JOB_RETURN 6026 **/ 6027static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 6028{ 6029 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6030 6031 ENTER; 6032 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 6033 6034 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 6035 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 6036 sizeof(struct ipr_ioa_vpd)); 6037 6038 LEAVE; 6039 return IPR_RC_JOB_RETURN; 6040} 6041 6042/** 6043 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ. 6044 * @ipr_cmd: ipr command struct 6045 * 6046 * This function send an Identify Host Request Response Queue 6047 * command to establish the HRRQ with the adapter. 6048 * 6049 * Return value: 6050 * IPR_RC_JOB_RETURN 6051 **/ 6052static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd) 6053{ 6054 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6055 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6056 6057 ENTER; 6058 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 6059 6060 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 6061 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6062 6063 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6064 ioarcb->cmd_pkt.cdb[2] = 6065 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff; 6066 ioarcb->cmd_pkt.cdb[3] = 6067 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff; 6068 ioarcb->cmd_pkt.cdb[4] = 6069 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff; 6070 ioarcb->cmd_pkt.cdb[5] = 6071 ((u32) ioa_cfg->host_rrq_dma) & 0xff; 6072 ioarcb->cmd_pkt.cdb[7] = 6073 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; 6074 ioarcb->cmd_pkt.cdb[8] = 6075 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; 6076 6077 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 6078 6079 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6080 6081 LEAVE; 6082 return IPR_RC_JOB_RETURN; 6083} 6084 6085/** 6086 * ipr_reset_timer_done - Adapter reset timer function 6087 * @ipr_cmd: ipr command struct 6088 * 6089 * Description: This function is used in adapter reset processing 6090 * for timing events. If the reset_cmd pointer in the IOA 6091 * config struct is not this adapter's we are doing nested 6092 * resets and fail_all_ops will take care of freeing the 6093 * command block. 6094 * 6095 * Return value: 6096 * none 6097 **/ 6098static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 6099{ 6100 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6101 unsigned long lock_flags = 0; 6102 6103 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6104 6105 if (ioa_cfg->reset_cmd == ipr_cmd) { 6106 list_del(&ipr_cmd->queue); 6107 ipr_cmd->done(ipr_cmd); 6108 } 6109 6110 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6111} 6112 6113/** 6114 * ipr_reset_start_timer - Start a timer for adapter reset job 6115 * @ipr_cmd: ipr command struct 6116 * @timeout: timeout value 6117 * 6118 * Description: This function is used in adapter reset processing 6119 * for timing events. If the reset_cmd pointer in the IOA 6120 * config struct is not this adapter's we are doing nested 6121 * resets and fail_all_ops will take care of freeing the 6122 * command block. 6123 * 6124 * Return value: 6125 * none 6126 **/ 6127static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 6128 unsigned long timeout) 6129{ 6130 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 6131 ipr_cmd->done = ipr_reset_ioa_job; 6132 6133 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 6134 ipr_cmd->timer.expires = jiffies + timeout; 6135 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 6136 add_timer(&ipr_cmd->timer); 6137} 6138 6139/** 6140 * ipr_init_ioa_mem - Initialize ioa_cfg control block 6141 * @ioa_cfg: ioa cfg struct 6142 * 6143 * Return value: 6144 * nothing 6145 **/ 6146static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 6147{ 6148 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); 6149 6150 /* Initialize Host RRQ pointers */ 6151 ioa_cfg->hrrq_start = ioa_cfg->host_rrq; 6152 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; 6153 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 6154 ioa_cfg->toggle_bit = 1; 6155 6156 /* Zero out config table */ 6157 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table)); 6158} 6159 6160/** 6161 * ipr_reset_enable_ioa - Enable the IOA following a reset. 6162 * @ipr_cmd: ipr command struct 6163 * 6164 * This function reinitializes some control blocks and 6165 * enables destructive diagnostics on the adapter. 6166 * 6167 * Return value: 6168 * IPR_RC_JOB_RETURN 6169 **/ 6170static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 6171{ 6172 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6173 volatile u32 int_reg; 6174 6175 ENTER; 6176 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq; 6177 ipr_init_ioa_mem(ioa_cfg); 6178 6179 ioa_cfg->allow_interrupts = 1; 6180 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 6181 6182 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 6183 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 6184 ioa_cfg->regs.clr_interrupt_mask_reg); 6185 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 6186 return IPR_RC_JOB_CONTINUE; 6187 } 6188 6189 /* Enable destructive diagnostics on IOA */ 6190 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg); 6191 6192 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg); 6193 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 6194 6195 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 6196 6197 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 6198 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ); 6199 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 6200 ipr_cmd->done = ipr_reset_ioa_job; 6201 add_timer(&ipr_cmd->timer); 6202 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 6203 6204 LEAVE; 6205 return IPR_RC_JOB_RETURN; 6206} 6207 6208/** 6209 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 6210 * @ipr_cmd: ipr command struct 6211 * 6212 * This function is invoked when an adapter dump has run out 6213 * of processing time. 6214 * 6215 * Return value: 6216 * IPR_RC_JOB_CONTINUE 6217 **/ 6218static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 6219{ 6220 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6221 6222 if (ioa_cfg->sdt_state == GET_DUMP) 6223 ioa_cfg->sdt_state = ABORT_DUMP; 6224 6225 ipr_cmd->job_step = ipr_reset_alert; 6226 6227 return IPR_RC_JOB_CONTINUE; 6228} 6229 6230/** 6231 * ipr_unit_check_no_data - Log a unit check/no data error log 6232 * @ioa_cfg: ioa config struct 6233 * 6234 * Logs an error indicating the adapter unit checked, but for some 6235 * reason, we were unable to fetch the unit check buffer. 6236 * 6237 * Return value: 6238 * nothing 6239 **/ 6240static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 6241{ 6242 ioa_cfg->errors_logged++; 6243 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 6244} 6245 6246/** 6247 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 6248 * @ioa_cfg: ioa config struct 6249 * 6250 * Fetches the unit check buffer from the adapter by clocking the data 6251 * through the mailbox register. 6252 * 6253 * Return value: 6254 * nothing 6255 **/ 6256static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 6257{ 6258 unsigned long mailbox; 6259 struct ipr_hostrcb *hostrcb; 6260 struct ipr_uc_sdt sdt; 6261 int rc, length; 6262 6263 mailbox = readl(ioa_cfg->ioa_mailbox); 6264 6265 if (!ipr_sdt_is_fmt2(mailbox)) { 6266 ipr_unit_check_no_data(ioa_cfg); 6267 return; 6268 } 6269 6270 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 6271 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 6272 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 6273 6274 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) || 6275 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) { 6276 ipr_unit_check_no_data(ioa_cfg); 6277 return; 6278 } 6279 6280 /* Find length of the first sdt entry (UC buffer) */ 6281 length = (be32_to_cpu(sdt.entry[0].end_offset) - 6282 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK; 6283 6284 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 6285 struct ipr_hostrcb, queue); 6286 list_del(&hostrcb->queue); 6287 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 6288 6289 rc = ipr_get_ldump_data_section(ioa_cfg, 6290 be32_to_cpu(sdt.entry[0].bar_str_offset), 6291 (__be32 *)&hostrcb->hcam, 6292 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 6293 6294 if (!rc) 6295 ipr_handle_log_data(ioa_cfg, hostrcb); 6296 else 6297 ipr_unit_check_no_data(ioa_cfg); 6298 6299 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 6300} 6301 6302/** 6303 * ipr_reset_restore_cfg_space - Restore PCI config space. 6304 * @ipr_cmd: ipr command struct 6305 * 6306 * Description: This function restores the saved PCI config space of 6307 * the adapter, fails all outstanding ops back to the callers, and 6308 * fetches the dump/unit check if applicable to this reset. 6309 * 6310 * Return value: 6311 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6312 **/ 6313static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 6314{ 6315 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6316 int rc; 6317 6318 ENTER; 6319 rc = pci_restore_state(ioa_cfg->pdev); 6320 6321 if (rc != PCIBIOS_SUCCESSFUL) { 6322 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6323 return IPR_RC_JOB_CONTINUE; 6324 } 6325 6326 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 6327 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6328 return IPR_RC_JOB_CONTINUE; 6329 } 6330 6331 ipr_fail_all_ops(ioa_cfg); 6332 6333 if (ioa_cfg->ioa_unit_checked) { 6334 ioa_cfg->ioa_unit_checked = 0; 6335 ipr_get_unit_check_buffer(ioa_cfg); 6336 ipr_cmd->job_step = ipr_reset_alert; 6337 ipr_reset_start_timer(ipr_cmd, 0); 6338 return IPR_RC_JOB_RETURN; 6339 } 6340 6341 if (ioa_cfg->in_ioa_bringdown) { 6342 ipr_cmd->job_step = ipr_ioa_bringdown_done; 6343 } else { 6344 ipr_cmd->job_step = ipr_reset_enable_ioa; 6345 6346 if (GET_DUMP == ioa_cfg->sdt_state) { 6347 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); 6348 ipr_cmd->job_step = ipr_reset_wait_for_dump; 6349 schedule_work(&ioa_cfg->work_q); 6350 return IPR_RC_JOB_RETURN; 6351 } 6352 } 6353 6354 ENTER; 6355 return IPR_RC_JOB_CONTINUE; 6356} 6357 6358/** 6359 * ipr_reset_bist_done - BIST has completed on the adapter. 6360 * @ipr_cmd: ipr command struct 6361 * 6362 * Description: Unblock config space and resume the reset process. 6363 * 6364 * Return value: 6365 * IPR_RC_JOB_CONTINUE 6366 **/ 6367static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd) 6368{ 6369 ENTER; 6370 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 6371 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 6372 LEAVE; 6373 return IPR_RC_JOB_CONTINUE; 6374} 6375 6376/** 6377 * ipr_reset_start_bist - Run BIST on the adapter. 6378 * @ipr_cmd: ipr command struct 6379 * 6380 * Description: This function runs BIST on the adapter, then delays 2 seconds. 6381 * 6382 * Return value: 6383 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6384 **/ 6385static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 6386{ 6387 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6388 int rc; 6389 6390 ENTER; 6391 pci_block_user_cfg_access(ioa_cfg->pdev); 6392 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 6393 6394 if (rc != PCIBIOS_SUCCESSFUL) { 6395 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 6396 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6397 rc = IPR_RC_JOB_CONTINUE; 6398 } else { 6399 ipr_cmd->job_step = ipr_reset_bist_done; 6400 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 6401 rc = IPR_RC_JOB_RETURN; 6402 } 6403 6404 LEAVE; 6405 return rc; 6406} 6407 6408/** 6409 * ipr_reset_allowed - Query whether or not IOA can be reset 6410 * @ioa_cfg: ioa config struct 6411 * 6412 * Return value: 6413 * 0 if reset not allowed / non-zero if reset is allowed 6414 **/ 6415static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 6416{ 6417 volatile u32 temp_reg; 6418 6419 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 6420 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 6421} 6422 6423/** 6424 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 6425 * @ipr_cmd: ipr command struct 6426 * 6427 * Description: This function waits for adapter permission to run BIST, 6428 * then runs BIST. If the adapter does not give permission after a 6429 * reasonable time, we will reset the adapter anyway. The impact of 6430 * resetting the adapter without warning the adapter is the risk of 6431 * losing the persistent error log on the adapter. If the adapter is 6432 * reset while it is writing to the flash on the adapter, the flash 6433 * segment will have bad ECC and be zeroed. 6434 * 6435 * Return value: 6436 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6437 **/ 6438static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 6439{ 6440 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6441 int rc = IPR_RC_JOB_RETURN; 6442 6443 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 6444 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 6445 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 6446 } else { 6447 ipr_cmd->job_step = ipr_reset_start_bist; 6448 rc = IPR_RC_JOB_CONTINUE; 6449 } 6450 6451 return rc; 6452} 6453 6454/** 6455 * ipr_reset_alert_part2 - Alert the adapter of a pending reset 6456 * @ipr_cmd: ipr command struct 6457 * 6458 * Description: This function alerts the adapter that it will be reset. 6459 * If memory space is not currently enabled, proceed directly 6460 * to running BIST on the adapter. The timer must always be started 6461 * so we guarantee we do not run BIST from ipr_isr. 6462 * 6463 * Return value: 6464 * IPR_RC_JOB_RETURN 6465 **/ 6466static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 6467{ 6468 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6469 u16 cmd_reg; 6470 int rc; 6471 6472 ENTER; 6473 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 6474 6475 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 6476 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 6477 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg); 6478 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 6479 } else { 6480 ipr_cmd->job_step = ipr_reset_start_bist; 6481 } 6482 6483 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 6484 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 6485 6486 LEAVE; 6487 return IPR_RC_JOB_RETURN; 6488} 6489 6490/** 6491 * ipr_reset_ucode_download_done - Microcode download completion 6492 * @ipr_cmd: ipr command struct 6493 * 6494 * Description: This function unmaps the microcode download buffer. 6495 * 6496 * Return value: 6497 * IPR_RC_JOB_CONTINUE 6498 **/ 6499static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 6500{ 6501 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6502 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 6503 6504 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, 6505 sglist->num_sg, DMA_TO_DEVICE); 6506 6507 ipr_cmd->job_step = ipr_reset_alert; 6508 return IPR_RC_JOB_CONTINUE; 6509} 6510 6511/** 6512 * ipr_reset_ucode_download - Download microcode to the adapter 6513 * @ipr_cmd: ipr command struct 6514 * 6515 * Description: This function checks to see if it there is microcode 6516 * to download to the adapter. If there is, a download is performed. 6517 * 6518 * Return value: 6519 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6520 **/ 6521static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 6522{ 6523 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6524 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 6525 6526 ENTER; 6527 ipr_cmd->job_step = ipr_reset_alert; 6528 6529 if (!sglist) 6530 return IPR_RC_JOB_CONTINUE; 6531 6532 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6533 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6534 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 6535 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 6536 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 6537 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 6538 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 6539 6540 ipr_build_ucode_ioadl(ipr_cmd, sglist); 6541 ipr_cmd->job_step = ipr_reset_ucode_download_done; 6542 6543 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 6544 IPR_WRITE_BUFFER_TIMEOUT); 6545 6546 LEAVE; 6547 return IPR_RC_JOB_RETURN; 6548} 6549 6550/** 6551 * ipr_reset_shutdown_ioa - Shutdown the adapter 6552 * @ipr_cmd: ipr command struct 6553 * 6554 * Description: This function issues an adapter shutdown of the 6555 * specified type to the specified adapter as part of the 6556 * adapter reset job. 6557 * 6558 * Return value: 6559 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6560 **/ 6561static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 6562{ 6563 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6564 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 6565 unsigned long timeout; 6566 int rc = IPR_RC_JOB_CONTINUE; 6567 6568 ENTER; 6569 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { 6570 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6571 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6572 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 6573 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 6574 6575 if (shutdown_type == IPR_SHUTDOWN_ABBREV) 6576 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 6577 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 6578 timeout = IPR_INTERNAL_TIMEOUT; 6579 else 6580 timeout = IPR_SHUTDOWN_TIMEOUT; 6581 6582 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 6583 6584 rc = IPR_RC_JOB_RETURN; 6585 ipr_cmd->job_step = ipr_reset_ucode_download; 6586 } else 6587 ipr_cmd->job_step = ipr_reset_alert; 6588 6589 LEAVE; 6590 return rc; 6591} 6592 6593/** 6594 * ipr_reset_ioa_job - Adapter reset job 6595 * @ipr_cmd: ipr command struct 6596 * 6597 * Description: This function is the job router for the adapter reset job. 6598 * 6599 * Return value: 6600 * none 6601 **/ 6602static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 6603{ 6604 u32 rc, ioasc; 6605 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6606 6607 do { 6608 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 6609 6610 if (ioa_cfg->reset_cmd != ipr_cmd) { 6611 /* 6612 * We are doing nested adapter resets and this is 6613 * not the current reset job. 6614 */ 6615 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6616 return; 6617 } 6618 6619 if (IPR_IOASC_SENSE_KEY(ioasc)) { 6620 rc = ipr_cmd->job_step_failed(ipr_cmd); 6621 if (rc == IPR_RC_JOB_RETURN) 6622 return; 6623 } 6624 6625 ipr_reinit_ipr_cmnd(ipr_cmd); 6626 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 6627 rc = ipr_cmd->job_step(ipr_cmd); 6628 } while(rc == IPR_RC_JOB_CONTINUE); 6629} 6630 6631/** 6632 * _ipr_initiate_ioa_reset - Initiate an adapter reset 6633 * @ioa_cfg: ioa config struct 6634 * @job_step: first job step of reset job 6635 * @shutdown_type: shutdown type 6636 * 6637 * Description: This function will initiate the reset of the given adapter 6638 * starting at the selected job step. 6639 * If the caller needs to wait on the completion of the reset, 6640 * the caller must sleep on the reset_wait_q. 6641 * 6642 * Return value: 6643 * none 6644 **/ 6645static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 6646 int (*job_step) (struct ipr_cmnd *), 6647 enum ipr_shutdown_type shutdown_type) 6648{ 6649 struct ipr_cmnd *ipr_cmd; 6650 6651 ioa_cfg->in_reset_reload = 1; 6652 ioa_cfg->allow_cmds = 0; 6653 scsi_block_requests(ioa_cfg->host); 6654 6655 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 6656 ioa_cfg->reset_cmd = ipr_cmd; 6657 ipr_cmd->job_step = job_step; 6658 ipr_cmd->u.shutdown_type = shutdown_type; 6659 6660 ipr_reset_ioa_job(ipr_cmd); 6661} 6662 6663/** 6664 * ipr_initiate_ioa_reset - Initiate an adapter reset 6665 * @ioa_cfg: ioa config struct 6666 * @shutdown_type: shutdown type 6667 * 6668 * Description: This function will initiate the reset of the given adapter. 6669 * If the caller needs to wait on the completion of the reset, 6670 * the caller must sleep on the reset_wait_q. 6671 * 6672 * Return value: 6673 * none 6674 **/ 6675static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 6676 enum ipr_shutdown_type shutdown_type) 6677{ 6678 if (ioa_cfg->ioa_is_dead) 6679 return; 6680 6681 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) 6682 ioa_cfg->sdt_state = ABORT_DUMP; 6683 6684 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 6685 dev_err(&ioa_cfg->pdev->dev, 6686 "IOA taken offline - error recovery failed\n"); 6687 6688 ioa_cfg->reset_retries = 0; 6689 ioa_cfg->ioa_is_dead = 1; 6690 6691 if (ioa_cfg->in_ioa_bringdown) { 6692 ioa_cfg->reset_cmd = NULL; 6693 ioa_cfg->in_reset_reload = 0; 6694 ipr_fail_all_ops(ioa_cfg); 6695 wake_up_all(&ioa_cfg->reset_wait_q); 6696 6697 spin_unlock_irq(ioa_cfg->host->host_lock); 6698 scsi_unblock_requests(ioa_cfg->host); 6699 spin_lock_irq(ioa_cfg->host->host_lock); 6700 return; 6701 } else { 6702 ioa_cfg->in_ioa_bringdown = 1; 6703 shutdown_type = IPR_SHUTDOWN_NONE; 6704 } 6705 } 6706 6707 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 6708 shutdown_type); 6709} 6710 6711/** 6712 * ipr_reset_freeze - Hold off all I/O activity 6713 * @ipr_cmd: ipr command struct 6714 * 6715 * Description: If the PCI slot is frozen, hold off all I/O 6716 * activity; then, as soon as the slot is available again, 6717 * initiate an adapter reset. 6718 */ 6719static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 6720{ 6721 /* Disallow new interrupts, avoid loop */ 6722 ipr_cmd->ioa_cfg->allow_interrupts = 0; 6723 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 6724 ipr_cmd->done = ipr_reset_ioa_job; 6725 return IPR_RC_JOB_RETURN; 6726} 6727 6728/** 6729 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 6730 * @pdev: PCI device struct 6731 * 6732 * Description: This routine is called to tell us that the PCI bus 6733 * is down. Can't do anything here, except put the device driver 6734 * into a holding pattern, waiting for the PCI bus to come back. 6735 */ 6736static void ipr_pci_frozen(struct pci_dev *pdev) 6737{ 6738 unsigned long flags = 0; 6739 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6740 6741 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6742 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 6743 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6744} 6745 6746/** 6747 * ipr_pci_slot_reset - Called when PCI slot has been reset. 6748 * @pdev: PCI device struct 6749 * 6750 * Description: This routine is called by the pci error recovery 6751 * code after the PCI slot has been reset, just before we 6752 * should resume normal operations. 6753 */ 6754static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 6755{ 6756 unsigned long flags = 0; 6757 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6758 6759 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6760 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 6761 IPR_SHUTDOWN_NONE); 6762 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6763 return PCI_ERS_RESULT_RECOVERED; 6764} 6765 6766/** 6767 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 6768 * @pdev: PCI device struct 6769 * 6770 * Description: This routine is called when the PCI bus has 6771 * permanently failed. 6772 */ 6773static void ipr_pci_perm_failure(struct pci_dev *pdev) 6774{ 6775 unsigned long flags = 0; 6776 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6777 6778 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6779 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 6780 ioa_cfg->sdt_state = ABORT_DUMP; 6781 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES; 6782 ioa_cfg->in_ioa_bringdown = 1; 6783 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6784 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6785} 6786 6787/** 6788 * ipr_pci_error_detected - Called when a PCI error is detected. 6789 * @pdev: PCI device struct 6790 * @state: PCI channel state 6791 * 6792 * Description: Called when a PCI error is detected. 6793 * 6794 * Return value: 6795 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 6796 */ 6797static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 6798 pci_channel_state_t state) 6799{ 6800 switch (state) { 6801 case pci_channel_io_frozen: 6802 ipr_pci_frozen(pdev); 6803 return PCI_ERS_RESULT_NEED_RESET; 6804 case pci_channel_io_perm_failure: 6805 ipr_pci_perm_failure(pdev); 6806 return PCI_ERS_RESULT_DISCONNECT; 6807 break; 6808 default: 6809 break; 6810 } 6811 return PCI_ERS_RESULT_NEED_RESET; 6812} 6813 6814/** 6815 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 6816 * @ioa_cfg: ioa cfg struct 6817 * 6818 * Description: This is the second phase of adapter intialization 6819 * This function takes care of initilizing the adapter to the point 6820 * where it can accept new commands. 6821 6822 * Return value: 6823 * 0 on sucess / -EIO on failure 6824 **/ 6825static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 6826{ 6827 int rc = 0; 6828 unsigned long host_lock_flags = 0; 6829 6830 ENTER; 6831 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 6832 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 6833 if (ioa_cfg->needs_hard_reset) { 6834 ioa_cfg->needs_hard_reset = 0; 6835 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6836 } else 6837 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 6838 IPR_SHUTDOWN_NONE); 6839 6840 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 6841 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6842 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 6843 6844 if (ioa_cfg->ioa_is_dead) { 6845 rc = -EIO; 6846 } else if (ipr_invalid_adapter(ioa_cfg)) { 6847 if (!ipr_testmode) 6848 rc = -EIO; 6849 6850 dev_err(&ioa_cfg->pdev->dev, 6851 "Adapter not supported in this hardware configuration.\n"); 6852 } 6853 6854 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 6855 6856 LEAVE; 6857 return rc; 6858} 6859 6860/** 6861 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 6862 * @ioa_cfg: ioa config struct 6863 * 6864 * Return value: 6865 * none 6866 **/ 6867static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 6868{ 6869 int i; 6870 6871 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 6872 if (ioa_cfg->ipr_cmnd_list[i]) 6873 pci_pool_free(ioa_cfg->ipr_cmd_pool, 6874 ioa_cfg->ipr_cmnd_list[i], 6875 ioa_cfg->ipr_cmnd_list_dma[i]); 6876 6877 ioa_cfg->ipr_cmnd_list[i] = NULL; 6878 } 6879 6880 if (ioa_cfg->ipr_cmd_pool) 6881 pci_pool_destroy (ioa_cfg->ipr_cmd_pool); 6882 6883 ioa_cfg->ipr_cmd_pool = NULL; 6884} 6885 6886/** 6887 * ipr_free_mem - Frees memory allocated for an adapter 6888 * @ioa_cfg: ioa cfg struct 6889 * 6890 * Return value: 6891 * nothing 6892 **/ 6893static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 6894{ 6895 int i; 6896 6897 kfree(ioa_cfg->res_entries); 6898 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), 6899 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 6900 ipr_free_cmd_blks(ioa_cfg); 6901 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 6902 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 6903 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table), 6904 ioa_cfg->cfg_table, 6905 ioa_cfg->cfg_table_dma); 6906 6907 for (i = 0; i < IPR_NUM_HCAMS; i++) { 6908 pci_free_consistent(ioa_cfg->pdev, 6909 sizeof(struct ipr_hostrcb), 6910 ioa_cfg->hostrcb[i], 6911 ioa_cfg->hostrcb_dma[i]); 6912 } 6913 6914 ipr_free_dump(ioa_cfg); 6915 kfree(ioa_cfg->trace); 6916} 6917 6918/** 6919 * ipr_free_all_resources - Free all allocated resources for an adapter. 6920 * @ipr_cmd: ipr command struct 6921 * 6922 * This function frees all allocated resources for the 6923 * specified adapter. 6924 * 6925 * Return value: 6926 * none 6927 **/ 6928static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 6929{ 6930 struct pci_dev *pdev = ioa_cfg->pdev; 6931 6932 ENTER; 6933 free_irq(pdev->irq, ioa_cfg); 6934 iounmap(ioa_cfg->hdw_dma_regs); 6935 pci_release_regions(pdev); 6936 ipr_free_mem(ioa_cfg); 6937 scsi_host_put(ioa_cfg->host); 6938 pci_disable_device(pdev); 6939 LEAVE; 6940} 6941 6942/** 6943 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 6944 * @ioa_cfg: ioa config struct 6945 * 6946 * Return value: 6947 * 0 on success / -ENOMEM on allocation failure 6948 **/ 6949static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 6950{ 6951 struct ipr_cmnd *ipr_cmd; 6952 struct ipr_ioarcb *ioarcb; 6953 dma_addr_t dma_addr; 6954 int i; 6955 6956 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, 6957 sizeof(struct ipr_cmnd), 8, 0); 6958 6959 if (!ioa_cfg->ipr_cmd_pool) 6960 return -ENOMEM; 6961 6962 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 6963 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr); 6964 6965 if (!ipr_cmd) { 6966 ipr_free_cmd_blks(ioa_cfg); 6967 return -ENOMEM; 6968 } 6969 6970 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 6971 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 6972 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 6973 6974 ioarcb = &ipr_cmd->ioarcb; 6975 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 6976 ioarcb->host_response_handle = cpu_to_be32(i << 2); 6977 ioarcb->write_ioadl_addr = 6978 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); 6979 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 6980 ioarcb->ioasa_host_pci_addr = 6981 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa)); 6982 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 6983 ipr_cmd->cmd_index = i; 6984 ipr_cmd->ioa_cfg = ioa_cfg; 6985 ipr_cmd->sense_buffer_dma = dma_addr + 6986 offsetof(struct ipr_cmnd, sense_buffer); 6987 6988 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6989 } 6990 6991 return 0; 6992} 6993 6994/** 6995 * ipr_alloc_mem - Allocate memory for an adapter 6996 * @ioa_cfg: ioa config struct 6997 * 6998 * Return value: 6999 * 0 on success / non-zero for error 7000 **/ 7001static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 7002{ 7003 struct pci_dev *pdev = ioa_cfg->pdev; 7004 int i, rc = -ENOMEM; 7005 7006 ENTER; 7007 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * 7008 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL); 7009 7010 if (!ioa_cfg->res_entries) 7011 goto out; 7012 7013 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++) 7014 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 7015 7016 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, 7017 sizeof(struct ipr_misc_cbs), 7018 &ioa_cfg->vpd_cbs_dma); 7019 7020 if (!ioa_cfg->vpd_cbs) 7021 goto out_free_res_entries; 7022 7023 if (ipr_alloc_cmd_blks(ioa_cfg)) 7024 goto out_free_vpd_cbs; 7025 7026 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, 7027 sizeof(u32) * IPR_NUM_CMD_BLKS, 7028 &ioa_cfg->host_rrq_dma); 7029 7030 if (!ioa_cfg->host_rrq) 7031 goto out_ipr_free_cmd_blocks; 7032 7033 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev, 7034 sizeof(struct ipr_config_table), 7035 &ioa_cfg->cfg_table_dma); 7036 7037 if (!ioa_cfg->cfg_table) 7038 goto out_free_host_rrq; 7039 7040 for (i = 0; i < IPR_NUM_HCAMS; i++) { 7041 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, 7042 sizeof(struct ipr_hostrcb), 7043 &ioa_cfg->hostrcb_dma[i]); 7044 7045 if (!ioa_cfg->hostrcb[i]) 7046 goto out_free_hostrcb_dma; 7047 7048 ioa_cfg->hostrcb[i]->hostrcb_dma = 7049 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 7050 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg; 7051 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 7052 } 7053 7054 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * 7055 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 7056 7057 if (!ioa_cfg->trace) 7058 goto out_free_hostrcb_dma; 7059 7060 rc = 0; 7061out: 7062 LEAVE; 7063 return rc; 7064 7065out_free_hostrcb_dma: 7066 while (i-- > 0) { 7067 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), 7068 ioa_cfg->hostrcb[i], 7069 ioa_cfg->hostrcb_dma[i]); 7070 } 7071 pci_free_consistent(pdev, sizeof(struct ipr_config_table), 7072 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma); 7073out_free_host_rrq: 7074 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 7075 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 7076out_ipr_free_cmd_blocks: 7077 ipr_free_cmd_blks(ioa_cfg); 7078out_free_vpd_cbs: 7079 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), 7080 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 7081out_free_res_entries: 7082 kfree(ioa_cfg->res_entries); 7083 goto out; 7084} 7085 7086/** 7087 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 7088 * @ioa_cfg: ioa config struct 7089 * 7090 * Return value: 7091 * none 7092 **/ 7093static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 7094{ 7095 int i; 7096 7097 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 7098 ioa_cfg->bus_attr[i].bus = i; 7099 ioa_cfg->bus_attr[i].qas_enabled = 0; 7100 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 7101 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 7102 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 7103 else 7104 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 7105 } 7106} 7107 7108/** 7109 * ipr_init_ioa_cfg - Initialize IOA config struct 7110 * @ioa_cfg: ioa config struct 7111 * @host: scsi host struct 7112 * @pdev: PCI dev struct 7113 * 7114 * Return value: 7115 * none 7116 **/ 7117static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 7118 struct Scsi_Host *host, struct pci_dev *pdev) 7119{ 7120 const struct ipr_interrupt_offsets *p; 7121 struct ipr_interrupts *t; 7122 void __iomem *base; 7123 7124 ioa_cfg->host = host; 7125 ioa_cfg->pdev = pdev; 7126 ioa_cfg->log_level = ipr_log_level; 7127 ioa_cfg->doorbell = IPR_DOORBELL; 7128 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 7129 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 7130 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); 7131 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); 7132 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 7133 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 7134 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 7135 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 7136 7137 INIT_LIST_HEAD(&ioa_cfg->free_q); 7138 INIT_LIST_HEAD(&ioa_cfg->pending_q); 7139 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 7140 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 7141 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 7142 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 7143 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread); 7144 init_waitqueue_head(&ioa_cfg->reset_wait_q); 7145 ioa_cfg->sdt_state = INACTIVE; 7146 if (ipr_enable_cache) 7147 ioa_cfg->cache_state = CACHE_ENABLED; 7148 else 7149 ioa_cfg->cache_state = CACHE_DISABLED; 7150 7151 ipr_initialize_bus_attr(ioa_cfg); 7152 7153 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 7154 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 7155 host->max_channel = IPR_MAX_BUS_TO_SCAN; 7156 host->unique_id = host->host_no; 7157 host->max_cmd_len = IPR_MAX_CDB_LEN; 7158 pci_set_drvdata(pdev, ioa_cfg); 7159 7160 p = &ioa_cfg->chip_cfg->regs; 7161 t = &ioa_cfg->regs; 7162 base = ioa_cfg->hdw_dma_regs; 7163 7164 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 7165 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 7166 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 7167 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 7168 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 7169 t->ioarrin_reg = base + p->ioarrin_reg; 7170 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 7171 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 7172 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 7173} 7174 7175/** 7176 * ipr_get_chip_cfg - Find adapter chip configuration 7177 * @dev_id: PCI device id struct 7178 * 7179 * Return value: 7180 * ptr to chip config on success / NULL on failure 7181 **/ 7182static const struct ipr_chip_cfg_t * __devinit 7183ipr_get_chip_cfg(const struct pci_device_id *dev_id) 7184{ 7185 int i; 7186 7187 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 7188 if (ipr_chip[i].vendor == dev_id->vendor && 7189 ipr_chip[i].device == dev_id->device) 7190 return ipr_chip[i].cfg; 7191 return NULL; 7192} 7193 7194/** 7195 * ipr_probe_ioa - Allocates memory and does first stage of initialization 7196 * @pdev: PCI device struct 7197 * @dev_id: PCI device id struct 7198 * 7199 * Return value: 7200 * 0 on success / non-zero on failure 7201 **/ 7202static int __devinit ipr_probe_ioa(struct pci_dev *pdev, 7203 const struct pci_device_id *dev_id) 7204{ 7205 struct ipr_ioa_cfg *ioa_cfg; 7206 struct Scsi_Host *host; 7207 unsigned long ipr_regs_pci; 7208 void __iomem *ipr_regs; 7209 int rc = PCIBIOS_SUCCESSFUL; 7210 volatile u32 mask, uproc; 7211 7212 ENTER; 7213 7214 if ((rc = pci_enable_device(pdev))) { 7215 dev_err(&pdev->dev, "Cannot enable adapter\n"); 7216 goto out; 7217 } 7218 7219 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 7220 7221 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 7222 7223 if (!host) { 7224 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 7225 rc = -ENOMEM; 7226 goto out_disable; 7227 } 7228 7229 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 7230 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 7231 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, 7232 sata_port_info.flags, &ipr_sata_ops); 7233 7234 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id); 7235 7236 if (!ioa_cfg->chip_cfg) { 7237 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 7238 dev_id->vendor, dev_id->device); 7239 goto out_scsi_host_put; 7240 } 7241 7242 if (ipr_transop_timeout) 7243 ioa_cfg->transop_timeout = ipr_transop_timeout; 7244 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT) 7245 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT; 7246 else 7247 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT; 7248 7249 ipr_regs_pci = pci_resource_start(pdev, 0); 7250 7251 rc = pci_request_regions(pdev, IPR_NAME); 7252 if (rc < 0) { 7253 dev_err(&pdev->dev, 7254 "Couldn't register memory range of registers\n"); 7255 goto out_scsi_host_put; 7256 } 7257 7258 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0)); 7259 7260 if (!ipr_regs) { 7261 dev_err(&pdev->dev, 7262 "Couldn't map memory range of registers\n"); 7263 rc = -ENOMEM; 7264 goto out_release_regions; 7265 } 7266 7267 ioa_cfg->hdw_dma_regs = ipr_regs; 7268 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 7269 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 7270 7271 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 7272 7273 pci_set_master(pdev); 7274 7275 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 7276 if (rc < 0) { 7277 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); 7278 goto cleanup_nomem; 7279 } 7280 7281 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 7282 ioa_cfg->chip_cfg->cache_line_size); 7283 7284 if (rc != PCIBIOS_SUCCESSFUL) { 7285 dev_err(&pdev->dev, "Write of cache line size failed\n"); 7286 rc = -EIO; 7287 goto cleanup_nomem; 7288 } 7289 7290 /* Save away PCI config space for use following IOA reset */ 7291 rc = pci_save_state(pdev); 7292 7293 if (rc != PCIBIOS_SUCCESSFUL) { 7294 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 7295 rc = -EIO; 7296 goto cleanup_nomem; 7297 } 7298 7299 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 7300 goto cleanup_nomem; 7301 7302 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 7303 goto cleanup_nomem; 7304 7305 rc = ipr_alloc_mem(ioa_cfg); 7306 if (rc < 0) { 7307 dev_err(&pdev->dev, 7308 "Couldn't allocate enough memory for device driver!\n"); 7309 goto cleanup_nomem; 7310 } 7311 7312 /* 7313 * If HRRQ updated interrupt is not masked, or reset alert is set, 7314 * the card is in an unknown state and needs a hard reset 7315 */ 7316 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7317 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg); 7318 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 7319 ioa_cfg->needs_hard_reset = 1; 7320 7321 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 7322 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg); 7323 7324 if (rc) { 7325 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 7326 pdev->irq, rc); 7327 goto cleanup_nolog; 7328 } 7329 7330 spin_lock(&ipr_driver_lock); 7331 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 7332 spin_unlock(&ipr_driver_lock); 7333 7334 LEAVE; 7335out: 7336 return rc; 7337 7338cleanup_nolog: 7339 ipr_free_mem(ioa_cfg); 7340cleanup_nomem: 7341 iounmap(ipr_regs); 7342out_release_regions: 7343 pci_release_regions(pdev); 7344out_scsi_host_put: 7345 scsi_host_put(host); 7346out_disable: 7347 pci_disable_device(pdev); 7348 goto out; 7349} 7350 7351/** 7352 * ipr_scan_vsets - Scans for VSET devices 7353 * @ioa_cfg: ioa config struct 7354 * 7355 * Description: Since the VSET resources do not follow SAM in that we can have 7356 * sparse LUNs with no LUN 0, we have to scan for these ourselves. 7357 * 7358 * Return value: 7359 * none 7360 **/ 7361static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) 7362{ 7363 int target, lun; 7364 7365 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) 7366 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) 7367 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); 7368} 7369 7370/** 7371 * ipr_initiate_ioa_bringdown - Bring down an adapter 7372 * @ioa_cfg: ioa config struct 7373 * @shutdown_type: shutdown type 7374 * 7375 * Description: This function will initiate bringing down the adapter. 7376 * This consists of issuing an IOA shutdown to the adapter 7377 * to flush the cache, and running BIST. 7378 * If the caller needs to wait on the completion of the reset, 7379 * the caller must sleep on the reset_wait_q. 7380 * 7381 * Return value: 7382 * none 7383 **/ 7384static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 7385 enum ipr_shutdown_type shutdown_type) 7386{ 7387 ENTER; 7388 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 7389 ioa_cfg->sdt_state = ABORT_DUMP; 7390 ioa_cfg->reset_retries = 0; 7391 ioa_cfg->in_ioa_bringdown = 1; 7392 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 7393 LEAVE; 7394} 7395 7396/** 7397 * __ipr_remove - Remove a single adapter 7398 * @pdev: pci device struct 7399 * 7400 * Adapter hot plug remove entry point. 7401 * 7402 * Return value: 7403 * none 7404 **/ 7405static void __ipr_remove(struct pci_dev *pdev) 7406{ 7407 unsigned long host_lock_flags = 0; 7408 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7409 ENTER; 7410 7411 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7412 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 7413 7414 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7415 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7416 flush_scheduled_work(); 7417 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7418 7419 spin_lock(&ipr_driver_lock); 7420 list_del(&ioa_cfg->queue); 7421 spin_unlock(&ipr_driver_lock); 7422 7423 if (ioa_cfg->sdt_state == ABORT_DUMP) 7424 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 7425 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7426 7427 ipr_free_all_resources(ioa_cfg); 7428 7429 LEAVE; 7430} 7431 7432/** 7433 * ipr_remove - IOA hot plug remove entry point 7434 * @pdev: pci device struct 7435 * 7436 * Adapter hot plug remove entry point. 7437 * 7438 * Return value: 7439 * none 7440 **/ 7441static void ipr_remove(struct pci_dev *pdev) 7442{ 7443 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7444 7445 ENTER; 7446 7447 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7448 &ipr_trace_attr); 7449 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj, 7450 &ipr_dump_attr); 7451 scsi_remove_host(ioa_cfg->host); 7452 7453 __ipr_remove(pdev); 7454 7455 LEAVE; 7456} 7457 7458/** 7459 * ipr_probe - Adapter hot plug add entry point 7460 * 7461 * Return value: 7462 * 0 on success / non-zero on failure 7463 **/ 7464static int __devinit ipr_probe(struct pci_dev *pdev, 7465 const struct pci_device_id *dev_id) 7466{ 7467 struct ipr_ioa_cfg *ioa_cfg; 7468 int rc; 7469 7470 rc = ipr_probe_ioa(pdev, dev_id); 7471 7472 if (rc) 7473 return rc; 7474 7475 ioa_cfg = pci_get_drvdata(pdev); 7476 rc = ipr_probe_ioa_part2(ioa_cfg); 7477 7478 if (rc) { 7479 __ipr_remove(pdev); 7480 return rc; 7481 } 7482 7483 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 7484 7485 if (rc) { 7486 __ipr_remove(pdev); 7487 return rc; 7488 } 7489 7490 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7491 &ipr_trace_attr); 7492 7493 if (rc) { 7494 scsi_remove_host(ioa_cfg->host); 7495 __ipr_remove(pdev); 7496 return rc; 7497 } 7498 7499 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj, 7500 &ipr_dump_attr); 7501 7502 if (rc) { 7503 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7504 &ipr_trace_attr); 7505 scsi_remove_host(ioa_cfg->host); 7506 __ipr_remove(pdev); 7507 return rc; 7508 } 7509 7510 scsi_scan_host(ioa_cfg->host); 7511 ipr_scan_vsets(ioa_cfg); 7512 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); 7513 ioa_cfg->allow_ml_add_del = 1; 7514 ioa_cfg->host->max_channel = IPR_VSET_BUS; 7515 schedule_work(&ioa_cfg->work_q); 7516 return 0; 7517} 7518 7519/** 7520 * ipr_shutdown - Shutdown handler. 7521 * @pdev: pci device struct 7522 * 7523 * This function is invoked upon system shutdown/reboot. It will issue 7524 * an adapter shutdown to the adapter to flush the write cache. 7525 * 7526 * Return value: 7527 * none 7528 **/ 7529static void ipr_shutdown(struct pci_dev *pdev) 7530{ 7531 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7532 unsigned long lock_flags = 0; 7533 7534 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 7535 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 7536 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 7537 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7538} 7539 7540static struct pci_device_id ipr_pci_table[] __devinitdata = { 7541 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7542 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 }, 7543 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7544 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 }, 7545 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7546 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 }, 7547 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7548 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 }, 7549 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7550 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 }, 7551 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7552 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 }, 7553 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7554 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 }, 7555 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7556 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 7557 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7558 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7559 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 7560 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7561 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 }, 7562 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7563 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 7564 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7565 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7566 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 7567 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7568 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 }, 7569 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7570 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 7571 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7572 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7573 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 0 }, 7574 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7575 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0, 7576 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7577 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7578 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 }, 7579 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7580 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 7581 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7582 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 7583 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 }, 7584 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7585 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 }, 7586 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7587 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 7588 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7589 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7590 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 7591 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7592 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E, 7593 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 7594 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7595 { } 7596}; 7597MODULE_DEVICE_TABLE(pci, ipr_pci_table); 7598 7599static struct pci_error_handlers ipr_err_handler = { 7600 .error_detected = ipr_pci_error_detected, 7601 .slot_reset = ipr_pci_slot_reset, 7602}; 7603 7604static struct pci_driver ipr_driver = { 7605 .name = IPR_NAME, 7606 .id_table = ipr_pci_table, 7607 .probe = ipr_probe, 7608 .remove = ipr_remove, 7609 .shutdown = ipr_shutdown, 7610 .err_handler = &ipr_err_handler, 7611}; 7612 7613/** 7614 * ipr_init - Module entry point 7615 * 7616 * Return value: 7617 * 0 on success / negative value on failure 7618 **/ 7619static int __init ipr_init(void) 7620{ 7621 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 7622 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 7623 7624 return pci_register_driver(&ipr_driver); 7625} 7626 7627/** 7628 * ipr_exit - Module unload 7629 * 7630 * Module unload entry point. 7631 * 7632 * Return value: 7633 * none 7634 **/ 7635static void __exit ipr_exit(void) 7636{ 7637 pci_unregister_driver(&ipr_driver); 7638} 7639 7640module_init(ipr_init); 7641module_exit(ipr_exit); 7642