ipr.c revision ac719abab0fbe2b83dc99351f6605645aef814ab
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 = IPR_OPERATIONAL_TIMEOUT; 93static unsigned int ipr_enable_cache = 1; 94static unsigned int ipr_debug = 0; 95static int ipr_auto_create = 1; 96static DEFINE_SPINLOCK(ipr_driver_lock); 97 98/* This table describes the differences between DMA controller chips */ 99static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { 100 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */ 101 .mailbox = 0x0042C, 102 .cache_line_size = 0x20, 103 { 104 .set_interrupt_mask_reg = 0x0022C, 105 .clr_interrupt_mask_reg = 0x00230, 106 .sense_interrupt_mask_reg = 0x0022C, 107 .clr_interrupt_reg = 0x00228, 108 .sense_interrupt_reg = 0x00224, 109 .ioarrin_reg = 0x00404, 110 .sense_uproc_interrupt_reg = 0x00214, 111 .set_uproc_interrupt_reg = 0x00214, 112 .clr_uproc_interrupt_reg = 0x00218 113 } 114 }, 115 { /* Snipe and Scamp */ 116 .mailbox = 0x0052C, 117 .cache_line_size = 0x20, 118 { 119 .set_interrupt_mask_reg = 0x00288, 120 .clr_interrupt_mask_reg = 0x0028C, 121 .sense_interrupt_mask_reg = 0x00288, 122 .clr_interrupt_reg = 0x00284, 123 .sense_interrupt_reg = 0x00280, 124 .ioarrin_reg = 0x00504, 125 .sense_uproc_interrupt_reg = 0x00290, 126 .set_uproc_interrupt_reg = 0x00290, 127 .clr_uproc_interrupt_reg = 0x00294 128 } 129 }, 130}; 131 132static const struct ipr_chip_t ipr_chip[] = { 133 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] }, 134 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] }, 135 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] }, 136 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] }, 137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &ipr_chip_cfg[0] }, 138 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] }, 139 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] } 140}; 141 142static int ipr_max_bus_speeds [] = { 143 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE 144}; 145 146MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); 147MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); 148module_param_named(max_speed, ipr_max_speed, uint, 0); 149MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); 150module_param_named(log_level, ipr_log_level, uint, 0); 151MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); 152module_param_named(testmode, ipr_testmode, int, 0); 153MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); 154module_param_named(fastfail, ipr_fastfail, int, 0); 155MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); 156module_param_named(transop_timeout, ipr_transop_timeout, int, 0); 157MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); 158module_param_named(enable_cache, ipr_enable_cache, int, 0); 159MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)"); 160module_param_named(debug, ipr_debug, int, 0); 161MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)"); 162module_param_named(auto_create, ipr_auto_create, int, 0); 163MODULE_PARM_DESC(auto_create, "Auto-create single device RAID 0 arrays when initialized (default: 1)"); 164MODULE_LICENSE("GPL"); 165MODULE_VERSION(IPR_DRIVER_VERSION); 166 167/* A constant array of IOASCs/URCs/Error Messages */ 168static const 169struct ipr_error_table_t ipr_error_table[] = { 170 {0x00000000, 1, 1, 171 "8155: An unknown error was received"}, 172 {0x00330000, 0, 0, 173 "Soft underlength error"}, 174 {0x005A0000, 0, 0, 175 "Command to be cancelled not found"}, 176 {0x00808000, 0, 0, 177 "Qualified success"}, 178 {0x01080000, 1, 1, 179 "FFFE: Soft device bus error recovered by the IOA"}, 180 {0x01088100, 0, 1, 181 "4101: Soft device bus fabric error"}, 182 {0x01170600, 0, 1, 183 "FFF9: Device sector reassign successful"}, 184 {0x01170900, 0, 1, 185 "FFF7: Media error recovered by device rewrite procedures"}, 186 {0x01180200, 0, 1, 187 "7001: IOA sector reassignment successful"}, 188 {0x01180500, 0, 1, 189 "FFF9: Soft media error. Sector reassignment recommended"}, 190 {0x01180600, 0, 1, 191 "FFF7: Media error recovered by IOA rewrite procedures"}, 192 {0x01418000, 0, 1, 193 "FF3D: Soft PCI bus error recovered by the IOA"}, 194 {0x01440000, 1, 1, 195 "FFF6: Device hardware error recovered by the IOA"}, 196 {0x01448100, 0, 1, 197 "FFF6: Device hardware error recovered by the device"}, 198 {0x01448200, 1, 1, 199 "FF3D: Soft IOA error recovered by the IOA"}, 200 {0x01448300, 0, 1, 201 "FFFA: Undefined device response recovered by the IOA"}, 202 {0x014A0000, 1, 1, 203 "FFF6: Device bus error, message or command phase"}, 204 {0x014A8000, 0, 1, 205 "FFFE: Task Management Function failed"}, 206 {0x015D0000, 0, 1, 207 "FFF6: Failure prediction threshold exceeded"}, 208 {0x015D9200, 0, 1, 209 "8009: Impending cache battery pack failure"}, 210 {0x02040400, 0, 0, 211 "34FF: Disk device format in progress"}, 212 {0x023F0000, 0, 0, 213 "Synchronization required"}, 214 {0x024E0000, 0, 0, 215 "No ready, IOA shutdown"}, 216 {0x025A0000, 0, 0, 217 "Not ready, IOA has been shutdown"}, 218 {0x02670100, 0, 1, 219 "3020: Storage subsystem configuration error"}, 220 {0x03110B00, 0, 0, 221 "FFF5: Medium error, data unreadable, recommend reassign"}, 222 {0x03110C00, 0, 0, 223 "7000: Medium error, data unreadable, do not reassign"}, 224 {0x03310000, 0, 1, 225 "FFF3: Disk media format bad"}, 226 {0x04050000, 0, 1, 227 "3002: Addressed device failed to respond to selection"}, 228 {0x04080000, 1, 1, 229 "3100: Device bus error"}, 230 {0x04080100, 0, 1, 231 "3109: IOA timed out a device command"}, 232 {0x04088000, 0, 0, 233 "3120: SCSI bus is not operational"}, 234 {0x04088100, 0, 1, 235 "4100: Hard device bus fabric error"}, 236 {0x04118000, 0, 1, 237 "9000: IOA reserved area data check"}, 238 {0x04118100, 0, 1, 239 "9001: IOA reserved area invalid data pattern"}, 240 {0x04118200, 0, 1, 241 "9002: IOA reserved area LRC error"}, 242 {0x04320000, 0, 1, 243 "102E: Out of alternate sectors for disk storage"}, 244 {0x04330000, 1, 1, 245 "FFF4: Data transfer underlength error"}, 246 {0x04338000, 1, 1, 247 "FFF4: Data transfer overlength error"}, 248 {0x043E0100, 0, 1, 249 "3400: Logical unit failure"}, 250 {0x04408500, 0, 1, 251 "FFF4: Device microcode is corrupt"}, 252 {0x04418000, 1, 1, 253 "8150: PCI bus error"}, 254 {0x04430000, 1, 0, 255 "Unsupported device bus message received"}, 256 {0x04440000, 1, 1, 257 "FFF4: Disk device problem"}, 258 {0x04448200, 1, 1, 259 "8150: Permanent IOA failure"}, 260 {0x04448300, 0, 1, 261 "3010: Disk device returned wrong response to IOA"}, 262 {0x04448400, 0, 1, 263 "8151: IOA microcode error"}, 264 {0x04448500, 0, 0, 265 "Device bus status error"}, 266 {0x04448600, 0, 1, 267 "8157: IOA error requiring IOA reset to recover"}, 268 {0x04448700, 0, 0, 269 "ATA device status error"}, 270 {0x04490000, 0, 0, 271 "Message reject received from the device"}, 272 {0x04449200, 0, 1, 273 "8008: A permanent cache battery pack failure occurred"}, 274 {0x0444A000, 0, 1, 275 "9090: Disk unit has been modified after the last known status"}, 276 {0x0444A200, 0, 1, 277 "9081: IOA detected device error"}, 278 {0x0444A300, 0, 1, 279 "9082: IOA detected device error"}, 280 {0x044A0000, 1, 1, 281 "3110: Device bus error, message or command phase"}, 282 {0x044A8000, 1, 1, 283 "3110: SAS Command / Task Management Function failed"}, 284 {0x04670400, 0, 1, 285 "9091: Incorrect hardware configuration change has been detected"}, 286 {0x04678000, 0, 1, 287 "9073: Invalid multi-adapter configuration"}, 288 {0x04678100, 0, 1, 289 "4010: Incorrect connection between cascaded expanders"}, 290 {0x04678200, 0, 1, 291 "4020: Connections exceed IOA design limits"}, 292 {0x04678300, 0, 1, 293 "4030: Incorrect multipath connection"}, 294 {0x04679000, 0, 1, 295 "4110: Unsupported enclosure function"}, 296 {0x046E0000, 0, 1, 297 "FFF4: Command to logical unit failed"}, 298 {0x05240000, 1, 0, 299 "Illegal request, invalid request type or request packet"}, 300 {0x05250000, 0, 0, 301 "Illegal request, invalid resource handle"}, 302 {0x05258000, 0, 0, 303 "Illegal request, commands not allowed to this device"}, 304 {0x05258100, 0, 0, 305 "Illegal request, command not allowed to a secondary adapter"}, 306 {0x05260000, 0, 0, 307 "Illegal request, invalid field in parameter list"}, 308 {0x05260100, 0, 0, 309 "Illegal request, parameter not supported"}, 310 {0x05260200, 0, 0, 311 "Illegal request, parameter value invalid"}, 312 {0x052C0000, 0, 0, 313 "Illegal request, command sequence error"}, 314 {0x052C8000, 1, 0, 315 "Illegal request, dual adapter support not enabled"}, 316 {0x06040500, 0, 1, 317 "9031: Array protection temporarily suspended, protection resuming"}, 318 {0x06040600, 0, 1, 319 "9040: Array protection temporarily suspended, protection resuming"}, 320 {0x06288000, 0, 1, 321 "3140: Device bus not ready to ready transition"}, 322 {0x06290000, 0, 1, 323 "FFFB: SCSI bus was reset"}, 324 {0x06290500, 0, 0, 325 "FFFE: SCSI bus transition to single ended"}, 326 {0x06290600, 0, 0, 327 "FFFE: SCSI bus transition to LVD"}, 328 {0x06298000, 0, 1, 329 "FFFB: SCSI bus was reset by another initiator"}, 330 {0x063F0300, 0, 1, 331 "3029: A device replacement has occurred"}, 332 {0x064C8000, 0, 1, 333 "9051: IOA cache data exists for a missing or failed device"}, 334 {0x064C8100, 0, 1, 335 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"}, 336 {0x06670100, 0, 1, 337 "9025: Disk unit is not supported at its physical location"}, 338 {0x06670600, 0, 1, 339 "3020: IOA detected a SCSI bus configuration error"}, 340 {0x06678000, 0, 1, 341 "3150: SCSI bus configuration error"}, 342 {0x06678100, 0, 1, 343 "9074: Asymmetric advanced function disk configuration"}, 344 {0x06678300, 0, 1, 345 "4040: Incomplete multipath connection between IOA and enclosure"}, 346 {0x06678400, 0, 1, 347 "4041: Incomplete multipath connection between enclosure and device"}, 348 {0x06678500, 0, 1, 349 "9075: Incomplete multipath connection between IOA and remote IOA"}, 350 {0x06678600, 0, 1, 351 "9076: Configuration error, missing remote IOA"}, 352 {0x06679100, 0, 1, 353 "4050: Enclosure does not support a required multipath function"}, 354 {0x06690200, 0, 1, 355 "9041: Array protection temporarily suspended"}, 356 {0x06698200, 0, 1, 357 "9042: Corrupt array parity detected on specified device"}, 358 {0x066B0200, 0, 1, 359 "9030: Array no longer protected due to missing or failed disk unit"}, 360 {0x066B8000, 0, 1, 361 "9071: Link operational transition"}, 362 {0x066B8100, 0, 1, 363 "9072: Link not operational transition"}, 364 {0x066B8200, 0, 1, 365 "9032: Array exposed but still protected"}, 366 {0x066B9100, 0, 1, 367 "4061: Multipath redundancy level got better"}, 368 {0x066B9200, 0, 1, 369 "4060: Multipath redundancy level got worse"}, 370 {0x07270000, 0, 0, 371 "Failure due to other device"}, 372 {0x07278000, 0, 1, 373 "9008: IOA does not support functions expected by devices"}, 374 {0x07278100, 0, 1, 375 "9010: Cache data associated with attached devices cannot be found"}, 376 {0x07278200, 0, 1, 377 "9011: Cache data belongs to devices other than those attached"}, 378 {0x07278400, 0, 1, 379 "9020: Array missing 2 or more devices with only 1 device present"}, 380 {0x07278500, 0, 1, 381 "9021: Array missing 2 or more devices with 2 or more devices present"}, 382 {0x07278600, 0, 1, 383 "9022: Exposed array is missing a required device"}, 384 {0x07278700, 0, 1, 385 "9023: Array member(s) not at required physical locations"}, 386 {0x07278800, 0, 1, 387 "9024: Array not functional due to present hardware configuration"}, 388 {0x07278900, 0, 1, 389 "9026: Array not functional due to present hardware configuration"}, 390 {0x07278A00, 0, 1, 391 "9027: Array is missing a device and parity is out of sync"}, 392 {0x07278B00, 0, 1, 393 "9028: Maximum number of arrays already exist"}, 394 {0x07278C00, 0, 1, 395 "9050: Required cache data cannot be located for a disk unit"}, 396 {0x07278D00, 0, 1, 397 "9052: Cache data exists for a device that has been modified"}, 398 {0x07278F00, 0, 1, 399 "9054: IOA resources not available due to previous problems"}, 400 {0x07279100, 0, 1, 401 "9092: Disk unit requires initialization before use"}, 402 {0x07279200, 0, 1, 403 "9029: Incorrect hardware configuration change has been detected"}, 404 {0x07279600, 0, 1, 405 "9060: One or more disk pairs are missing from an array"}, 406 {0x07279700, 0, 1, 407 "9061: One or more disks are missing from an array"}, 408 {0x07279800, 0, 1, 409 "9062: One or more disks are missing from an array"}, 410 {0x07279900, 0, 1, 411 "9063: Maximum number of functional arrays has been exceeded"}, 412 {0x0B260000, 0, 0, 413 "Aborted command, invalid descriptor"}, 414 {0x0B5A0000, 0, 0, 415 "Command terminated by host"} 416}; 417 418static const struct ipr_ses_table_entry ipr_ses_table[] = { 419 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, 420 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, 421 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ 422 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ 423 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ 424 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ 425 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, 426 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, 427 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 428 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 429 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, 430 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, 431 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } 432}; 433 434/* 435 * Function Prototypes 436 */ 437static int ipr_reset_alert(struct ipr_cmnd *); 438static void ipr_process_ccn(struct ipr_cmnd *); 439static void ipr_process_error(struct ipr_cmnd *); 440static void ipr_reset_ioa_job(struct ipr_cmnd *); 441static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, 442 enum ipr_shutdown_type); 443 444#ifdef CONFIG_SCSI_IPR_TRACE 445/** 446 * ipr_trc_hook - Add a trace entry to the driver trace 447 * @ipr_cmd: ipr command struct 448 * @type: trace type 449 * @add_data: additional data 450 * 451 * Return value: 452 * none 453 **/ 454static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, 455 u8 type, u32 add_data) 456{ 457 struct ipr_trace_entry *trace_entry; 458 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 459 460 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++]; 461 trace_entry->time = jiffies; 462 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; 463 trace_entry->type = type; 464 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command; 465 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff; 466 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; 467 trace_entry->u.add_data = add_data; 468} 469#else 470#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0) 471#endif 472 473/** 474 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse 475 * @ipr_cmd: ipr command struct 476 * 477 * Return value: 478 * none 479 **/ 480static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 481{ 482 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 483 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 484 485 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 486 ioarcb->write_data_transfer_length = 0; 487 ioarcb->read_data_transfer_length = 0; 488 ioarcb->write_ioadl_len = 0; 489 ioarcb->read_ioadl_len = 0; 490 ioasa->ioasc = 0; 491 ioasa->residual_data_len = 0; 492 ioasa->u.gata.status = 0; 493 494 ipr_cmd->scsi_cmd = NULL; 495 ipr_cmd->qc = NULL; 496 ipr_cmd->sense_buffer[0] = 0; 497 ipr_cmd->dma_use_sg = 0; 498} 499 500/** 501 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block 502 * @ipr_cmd: ipr command struct 503 * 504 * Return value: 505 * none 506 **/ 507static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 508{ 509 ipr_reinit_ipr_cmnd(ipr_cmd); 510 ipr_cmd->u.scratch = 0; 511 ipr_cmd->sibling = NULL; 512 init_timer(&ipr_cmd->timer); 513} 514 515/** 516 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block 517 * @ioa_cfg: ioa config struct 518 * 519 * Return value: 520 * pointer to ipr command struct 521 **/ 522static 523struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) 524{ 525 struct ipr_cmnd *ipr_cmd; 526 527 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue); 528 list_del(&ipr_cmd->queue); 529 ipr_init_ipr_cmnd(ipr_cmd); 530 531 return ipr_cmd; 532} 533 534/** 535 * ipr_unmap_sglist - Unmap scatterlist if mapped 536 * @ioa_cfg: ioa config struct 537 * @ipr_cmd: ipr command struct 538 * 539 * Return value: 540 * nothing 541 **/ 542static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg, 543 struct ipr_cmnd *ipr_cmd) 544{ 545 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 546 547 if (ipr_cmd->dma_use_sg) { 548 if (scsi_cmd->use_sg > 0) { 549 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer, 550 scsi_cmd->use_sg, 551 scsi_cmd->sc_data_direction); 552 } else { 553 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle, 554 scsi_cmd->request_bufflen, 555 scsi_cmd->sc_data_direction); 556 } 557 } 558} 559 560/** 561 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts 562 * @ioa_cfg: ioa config struct 563 * @clr_ints: interrupts to clear 564 * 565 * This function masks all interrupts on the adapter, then clears the 566 * interrupts specified in the mask 567 * 568 * Return value: 569 * none 570 **/ 571static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, 572 u32 clr_ints) 573{ 574 volatile u32 int_reg; 575 576 /* Stop new interrupts */ 577 ioa_cfg->allow_interrupts = 0; 578 579 /* Set interrupt mask to stop all new interrupts */ 580 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); 581 582 /* Clear any pending interrupts */ 583 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg); 584 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 585} 586 587/** 588 * ipr_save_pcix_cmd_reg - Save PCI-X command register 589 * @ioa_cfg: ioa config struct 590 * 591 * Return value: 592 * 0 on success / -EIO on failure 593 **/ 594static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 595{ 596 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 597 598 if (pcix_cmd_reg == 0) { 599 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 600 return -EIO; 601 } 602 603 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 604 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 605 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 606 return -EIO; 607 } 608 609 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; 610 return 0; 611} 612 613/** 614 * ipr_set_pcix_cmd_reg - Setup PCI-X command register 615 * @ioa_cfg: ioa config struct 616 * 617 * Return value: 618 * 0 on success / -EIO on failure 619 **/ 620static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 621{ 622 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 623 624 if (pcix_cmd_reg) { 625 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 626 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 627 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); 628 return -EIO; 629 } 630 } else { 631 dev_err(&ioa_cfg->pdev->dev, 632 "Failed to setup PCI-X command register\n"); 633 return -EIO; 634 } 635 636 return 0; 637} 638 639/** 640 * ipr_sata_eh_done - done function for aborted SATA commands 641 * @ipr_cmd: ipr command struct 642 * 643 * This function is invoked for ops generated to SATA 644 * devices which are being aborted. 645 * 646 * Return value: 647 * none 648 **/ 649static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd) 650{ 651 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 652 struct ata_queued_cmd *qc = ipr_cmd->qc; 653 struct ipr_sata_port *sata_port = qc->ap->private_data; 654 655 qc->err_mask |= AC_ERR_OTHER; 656 sata_port->ioasa.status |= ATA_BUSY; 657 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 658 ata_qc_complete(qc); 659} 660 661/** 662 * ipr_scsi_eh_done - mid-layer done function for aborted ops 663 * @ipr_cmd: ipr command struct 664 * 665 * This function is invoked by the interrupt handler for 666 * ops generated by the SCSI mid-layer which are being aborted. 667 * 668 * Return value: 669 * none 670 **/ 671static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 672{ 673 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 674 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 675 676 scsi_cmd->result |= (DID_ERROR << 16); 677 678 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 679 scsi_cmd->scsi_done(scsi_cmd); 680 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 681} 682 683/** 684 * ipr_fail_all_ops - Fails all outstanding ops. 685 * @ioa_cfg: ioa config struct 686 * 687 * This function fails all outstanding ops. 688 * 689 * Return value: 690 * none 691 **/ 692static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) 693{ 694 struct ipr_cmnd *ipr_cmd, *temp; 695 696 ENTER; 697 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) { 698 list_del(&ipr_cmd->queue); 699 700 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); 701 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID); 702 703 if (ipr_cmd->scsi_cmd) 704 ipr_cmd->done = ipr_scsi_eh_done; 705 else if (ipr_cmd->qc) 706 ipr_cmd->done = ipr_sata_eh_done; 707 708 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET); 709 del_timer(&ipr_cmd->timer); 710 ipr_cmd->done(ipr_cmd); 711 } 712 713 LEAVE; 714} 715 716/** 717 * ipr_do_req - Send driver initiated requests. 718 * @ipr_cmd: ipr command struct 719 * @done: done function 720 * @timeout_func: timeout function 721 * @timeout: timeout value 722 * 723 * This function sends the specified command to the adapter with the 724 * timeout given. The done function is invoked on command completion. 725 * 726 * Return value: 727 * none 728 **/ 729static void ipr_do_req(struct ipr_cmnd *ipr_cmd, 730 void (*done) (struct ipr_cmnd *), 731 void (*timeout_func) (struct ipr_cmnd *), u32 timeout) 732{ 733 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 734 735 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 736 737 ipr_cmd->done = done; 738 739 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 740 ipr_cmd->timer.expires = jiffies + timeout; 741 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func; 742 743 add_timer(&ipr_cmd->timer); 744 745 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); 746 747 mb(); 748 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 749 ioa_cfg->regs.ioarrin_reg); 750} 751 752/** 753 * ipr_internal_cmd_done - Op done function for an internally generated op. 754 * @ipr_cmd: ipr command struct 755 * 756 * This function is the op done function for an internally generated, 757 * blocking op. It simply wakes the sleeping thread. 758 * 759 * Return value: 760 * none 761 **/ 762static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) 763{ 764 if (ipr_cmd->sibling) 765 ipr_cmd->sibling = NULL; 766 else 767 complete(&ipr_cmd->completion); 768} 769 770/** 771 * ipr_send_blocking_cmd - Send command and sleep on its completion. 772 * @ipr_cmd: ipr command struct 773 * @timeout_func: function to invoke if command times out 774 * @timeout: timeout 775 * 776 * Return value: 777 * none 778 **/ 779static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, 780 void (*timeout_func) (struct ipr_cmnd *ipr_cmd), 781 u32 timeout) 782{ 783 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 784 785 init_completion(&ipr_cmd->completion); 786 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); 787 788 spin_unlock_irq(ioa_cfg->host->host_lock); 789 wait_for_completion(&ipr_cmd->completion); 790 spin_lock_irq(ioa_cfg->host->host_lock); 791} 792 793/** 794 * ipr_send_hcam - Send an HCAM to the adapter. 795 * @ioa_cfg: ioa config struct 796 * @type: HCAM type 797 * @hostrcb: hostrcb struct 798 * 799 * This function will send a Host Controlled Async command to the adapter. 800 * If HCAMs are currently not allowed to be issued to the adapter, it will 801 * place the hostrcb on the free queue. 802 * 803 * Return value: 804 * none 805 **/ 806static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, 807 struct ipr_hostrcb *hostrcb) 808{ 809 struct ipr_cmnd *ipr_cmd; 810 struct ipr_ioarcb *ioarcb; 811 812 if (ioa_cfg->allow_cmds) { 813 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 814 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 815 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); 816 817 ipr_cmd->u.hostrcb = hostrcb; 818 ioarcb = &ipr_cmd->ioarcb; 819 820 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 821 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; 822 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; 823 ioarcb->cmd_pkt.cdb[1] = type; 824 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; 825 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; 826 827 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam)); 828 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 829 ipr_cmd->ioadl[0].flags_and_data_len = 830 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam)); 831 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma); 832 833 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) 834 ipr_cmd->done = ipr_process_ccn; 835 else 836 ipr_cmd->done = ipr_process_error; 837 838 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); 839 840 mb(); 841 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 842 ioa_cfg->regs.ioarrin_reg); 843 } else { 844 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 845 } 846} 847 848/** 849 * ipr_init_res_entry - Initialize a resource entry struct. 850 * @res: resource entry struct 851 * 852 * Return value: 853 * none 854 **/ 855static void ipr_init_res_entry(struct ipr_resource_entry *res) 856{ 857 res->needs_sync_complete = 0; 858 res->in_erp = 0; 859 res->add_to_ml = 0; 860 res->del_from_ml = 0; 861 res->resetting_device = 0; 862 res->sdev = NULL; 863 res->sata_port = NULL; 864} 865 866/** 867 * ipr_handle_config_change - Handle a config change from the adapter 868 * @ioa_cfg: ioa config struct 869 * @hostrcb: hostrcb 870 * 871 * Return value: 872 * none 873 **/ 874static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, 875 struct ipr_hostrcb *hostrcb) 876{ 877 struct ipr_resource_entry *res = NULL; 878 struct ipr_config_table_entry *cfgte; 879 u32 is_ndn = 1; 880 881 cfgte = &hostrcb->hcam.u.ccn.cfgte; 882 883 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 884 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr, 885 sizeof(cfgte->res_addr))) { 886 is_ndn = 0; 887 break; 888 } 889 } 890 891 if (is_ndn) { 892 if (list_empty(&ioa_cfg->free_res_q)) { 893 ipr_send_hcam(ioa_cfg, 894 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 895 hostrcb); 896 return; 897 } 898 899 res = list_entry(ioa_cfg->free_res_q.next, 900 struct ipr_resource_entry, queue); 901 902 list_del(&res->queue); 903 ipr_init_res_entry(res); 904 list_add_tail(&res->queue, &ioa_cfg->used_res_q); 905 } 906 907 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 908 909 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { 910 if (res->sdev) { 911 res->del_from_ml = 1; 912 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE; 913 if (ioa_cfg->allow_ml_add_del) 914 schedule_work(&ioa_cfg->work_q); 915 } else 916 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 917 } else if (!res->sdev) { 918 res->add_to_ml = 1; 919 if (ioa_cfg->allow_ml_add_del) 920 schedule_work(&ioa_cfg->work_q); 921 } 922 923 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 924} 925 926/** 927 * ipr_process_ccn - Op done function for a CCN. 928 * @ipr_cmd: ipr command struct 929 * 930 * This function is the op done function for a configuration 931 * change notification host controlled async from the adapter. 932 * 933 * Return value: 934 * none 935 **/ 936static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) 937{ 938 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 939 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 940 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 941 942 list_del(&hostrcb->queue); 943 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 944 945 if (ioasc) { 946 if (ioasc != IPR_IOASC_IOA_WAS_RESET) 947 dev_err(&ioa_cfg->pdev->dev, 948 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 949 950 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 951 } else { 952 ipr_handle_config_change(ioa_cfg, hostrcb); 953 } 954} 955 956/** 957 * ipr_log_vpd - Log the passed VPD to the error log. 958 * @vpd: vendor/product id/sn struct 959 * 960 * Return value: 961 * none 962 **/ 963static void ipr_log_vpd(struct ipr_vpd *vpd) 964{ 965 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN 966 + IPR_SERIAL_NUM_LEN]; 967 968 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 969 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id, 970 IPR_PROD_ID_LEN); 971 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; 972 ipr_err("Vendor/Product ID: %s\n", buffer); 973 974 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN); 975 buffer[IPR_SERIAL_NUM_LEN] = '\0'; 976 ipr_err(" Serial Number: %s\n", buffer); 977} 978 979/** 980 * ipr_log_ext_vpd - Log the passed extended VPD to the error log. 981 * @vpd: vendor/product id/sn/wwn struct 982 * 983 * Return value: 984 * none 985 **/ 986static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd) 987{ 988 ipr_log_vpd(&vpd->vpd); 989 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]), 990 be32_to_cpu(vpd->wwid[1])); 991} 992 993/** 994 * ipr_log_enhanced_cache_error - Log a cache error. 995 * @ioa_cfg: ioa config struct 996 * @hostrcb: hostrcb struct 997 * 998 * Return value: 999 * none 1000 **/ 1001static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1002 struct ipr_hostrcb *hostrcb) 1003{ 1004 struct ipr_hostrcb_type_12_error *error = 1005 &hostrcb->hcam.u.error.u.type_12_error; 1006 1007 ipr_err("-----Current Configuration-----\n"); 1008 ipr_err("Cache Directory Card Information:\n"); 1009 ipr_log_ext_vpd(&error->ioa_vpd); 1010 ipr_err("Adapter Card Information:\n"); 1011 ipr_log_ext_vpd(&error->cfc_vpd); 1012 1013 ipr_err("-----Expected Configuration-----\n"); 1014 ipr_err("Cache Directory Card Information:\n"); 1015 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd); 1016 ipr_err("Adapter Card Information:\n"); 1017 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd); 1018 1019 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1020 be32_to_cpu(error->ioa_data[0]), 1021 be32_to_cpu(error->ioa_data[1]), 1022 be32_to_cpu(error->ioa_data[2])); 1023} 1024 1025/** 1026 * ipr_log_cache_error - Log a cache error. 1027 * @ioa_cfg: ioa config struct 1028 * @hostrcb: hostrcb struct 1029 * 1030 * Return value: 1031 * none 1032 **/ 1033static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1034 struct ipr_hostrcb *hostrcb) 1035{ 1036 struct ipr_hostrcb_type_02_error *error = 1037 &hostrcb->hcam.u.error.u.type_02_error; 1038 1039 ipr_err("-----Current Configuration-----\n"); 1040 ipr_err("Cache Directory Card Information:\n"); 1041 ipr_log_vpd(&error->ioa_vpd); 1042 ipr_err("Adapter Card Information:\n"); 1043 ipr_log_vpd(&error->cfc_vpd); 1044 1045 ipr_err("-----Expected Configuration-----\n"); 1046 ipr_err("Cache Directory Card Information:\n"); 1047 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd); 1048 ipr_err("Adapter Card Information:\n"); 1049 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd); 1050 1051 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1052 be32_to_cpu(error->ioa_data[0]), 1053 be32_to_cpu(error->ioa_data[1]), 1054 be32_to_cpu(error->ioa_data[2])); 1055} 1056 1057/** 1058 * ipr_log_enhanced_config_error - Log a configuration error. 1059 * @ioa_cfg: ioa config struct 1060 * @hostrcb: hostrcb struct 1061 * 1062 * Return value: 1063 * none 1064 **/ 1065static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg, 1066 struct ipr_hostrcb *hostrcb) 1067{ 1068 int errors_logged, i; 1069 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry; 1070 struct ipr_hostrcb_type_13_error *error; 1071 1072 error = &hostrcb->hcam.u.error.u.type_13_error; 1073 errors_logged = be32_to_cpu(error->errors_logged); 1074 1075 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1076 be32_to_cpu(error->errors_detected), errors_logged); 1077 1078 dev_entry = error->dev; 1079 1080 for (i = 0; i < errors_logged; i++, dev_entry++) { 1081 ipr_err_separator; 1082 1083 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1084 ipr_log_ext_vpd(&dev_entry->vpd); 1085 1086 ipr_err("-----New Device Information-----\n"); 1087 ipr_log_ext_vpd(&dev_entry->new_vpd); 1088 1089 ipr_err("Cache Directory Card Information:\n"); 1090 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1091 1092 ipr_err("Adapter Card Information:\n"); 1093 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1094 } 1095} 1096 1097/** 1098 * ipr_log_config_error - Log a configuration error. 1099 * @ioa_cfg: ioa config struct 1100 * @hostrcb: hostrcb struct 1101 * 1102 * Return value: 1103 * none 1104 **/ 1105static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, 1106 struct ipr_hostrcb *hostrcb) 1107{ 1108 int errors_logged, i; 1109 struct ipr_hostrcb_device_data_entry *dev_entry; 1110 struct ipr_hostrcb_type_03_error *error; 1111 1112 error = &hostrcb->hcam.u.error.u.type_03_error; 1113 errors_logged = be32_to_cpu(error->errors_logged); 1114 1115 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1116 be32_to_cpu(error->errors_detected), errors_logged); 1117 1118 dev_entry = error->dev; 1119 1120 for (i = 0; i < errors_logged; i++, dev_entry++) { 1121 ipr_err_separator; 1122 1123 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1124 ipr_log_vpd(&dev_entry->vpd); 1125 1126 ipr_err("-----New Device Information-----\n"); 1127 ipr_log_vpd(&dev_entry->new_vpd); 1128 1129 ipr_err("Cache Directory Card Information:\n"); 1130 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd); 1131 1132 ipr_err("Adapter Card Information:\n"); 1133 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd); 1134 1135 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", 1136 be32_to_cpu(dev_entry->ioa_data[0]), 1137 be32_to_cpu(dev_entry->ioa_data[1]), 1138 be32_to_cpu(dev_entry->ioa_data[2]), 1139 be32_to_cpu(dev_entry->ioa_data[3]), 1140 be32_to_cpu(dev_entry->ioa_data[4])); 1141 } 1142} 1143 1144/** 1145 * ipr_log_enhanced_array_error - Log an array configuration error. 1146 * @ioa_cfg: ioa config struct 1147 * @hostrcb: hostrcb struct 1148 * 1149 * Return value: 1150 * none 1151 **/ 1152static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg, 1153 struct ipr_hostrcb *hostrcb) 1154{ 1155 int i, num_entries; 1156 struct ipr_hostrcb_type_14_error *error; 1157 struct ipr_hostrcb_array_data_entry_enhanced *array_entry; 1158 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1159 1160 error = &hostrcb->hcam.u.error.u.type_14_error; 1161 1162 ipr_err_separator; 1163 1164 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1165 error->protection_level, 1166 ioa_cfg->host->host_no, 1167 error->last_func_vset_res_addr.bus, 1168 error->last_func_vset_res_addr.target, 1169 error->last_func_vset_res_addr.lun); 1170 1171 ipr_err_separator; 1172 1173 array_entry = error->array_member; 1174 num_entries = min_t(u32, be32_to_cpu(error->num_entries), 1175 sizeof(error->array_member)); 1176 1177 for (i = 0; i < num_entries; i++, array_entry++) { 1178 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1179 continue; 1180 1181 if (be32_to_cpu(error->exposed_mode_adn) == i) 1182 ipr_err("Exposed Array Member %d:\n", i); 1183 else 1184 ipr_err("Array Member %d:\n", i); 1185 1186 ipr_log_ext_vpd(&array_entry->vpd); 1187 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1188 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1189 "Expected Location"); 1190 1191 ipr_err_separator; 1192 } 1193} 1194 1195/** 1196 * ipr_log_array_error - Log an array configuration error. 1197 * @ioa_cfg: ioa config struct 1198 * @hostrcb: hostrcb struct 1199 * 1200 * Return value: 1201 * none 1202 **/ 1203static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, 1204 struct ipr_hostrcb *hostrcb) 1205{ 1206 int i; 1207 struct ipr_hostrcb_type_04_error *error; 1208 struct ipr_hostrcb_array_data_entry *array_entry; 1209 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1210 1211 error = &hostrcb->hcam.u.error.u.type_04_error; 1212 1213 ipr_err_separator; 1214 1215 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1216 error->protection_level, 1217 ioa_cfg->host->host_no, 1218 error->last_func_vset_res_addr.bus, 1219 error->last_func_vset_res_addr.target, 1220 error->last_func_vset_res_addr.lun); 1221 1222 ipr_err_separator; 1223 1224 array_entry = error->array_member; 1225 1226 for (i = 0; i < 18; i++) { 1227 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1228 continue; 1229 1230 if (be32_to_cpu(error->exposed_mode_adn) == i) 1231 ipr_err("Exposed Array Member %d:\n", i); 1232 else 1233 ipr_err("Array Member %d:\n", i); 1234 1235 ipr_log_vpd(&array_entry->vpd); 1236 1237 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1238 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1239 "Expected Location"); 1240 1241 ipr_err_separator; 1242 1243 if (i == 9) 1244 array_entry = error->array_member2; 1245 else 1246 array_entry++; 1247 } 1248} 1249 1250/** 1251 * ipr_log_hex_data - Log additional hex IOA error data. 1252 * @ioa_cfg: ioa config struct 1253 * @data: IOA error data 1254 * @len: data length 1255 * 1256 * Return value: 1257 * none 1258 **/ 1259static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len) 1260{ 1261 int i; 1262 1263 if (len == 0) 1264 return; 1265 1266 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 1267 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP); 1268 1269 for (i = 0; i < len / 4; i += 4) { 1270 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 1271 be32_to_cpu(data[i]), 1272 be32_to_cpu(data[i+1]), 1273 be32_to_cpu(data[i+2]), 1274 be32_to_cpu(data[i+3])); 1275 } 1276} 1277 1278/** 1279 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error. 1280 * @ioa_cfg: ioa config struct 1281 * @hostrcb: hostrcb struct 1282 * 1283 * Return value: 1284 * none 1285 **/ 1286static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1287 struct ipr_hostrcb *hostrcb) 1288{ 1289 struct ipr_hostrcb_type_17_error *error; 1290 1291 error = &hostrcb->hcam.u.error.u.type_17_error; 1292 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1293 1294 ipr_err("%s\n", error->failure_reason); 1295 ipr_err("Remote Adapter VPD:\n"); 1296 ipr_log_ext_vpd(&error->vpd); 1297 ipr_log_hex_data(ioa_cfg, error->data, 1298 be32_to_cpu(hostrcb->hcam.length) - 1299 (offsetof(struct ipr_hostrcb_error, u) + 1300 offsetof(struct ipr_hostrcb_type_17_error, data))); 1301} 1302 1303/** 1304 * ipr_log_dual_ioa_error - Log a dual adapter error. 1305 * @ioa_cfg: ioa config struct 1306 * @hostrcb: hostrcb struct 1307 * 1308 * Return value: 1309 * none 1310 **/ 1311static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1312 struct ipr_hostrcb *hostrcb) 1313{ 1314 struct ipr_hostrcb_type_07_error *error; 1315 1316 error = &hostrcb->hcam.u.error.u.type_07_error; 1317 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1318 1319 ipr_err("%s\n", error->failure_reason); 1320 ipr_err("Remote Adapter VPD:\n"); 1321 ipr_log_vpd(&error->vpd); 1322 ipr_log_hex_data(ioa_cfg, error->data, 1323 be32_to_cpu(hostrcb->hcam.length) - 1324 (offsetof(struct ipr_hostrcb_error, u) + 1325 offsetof(struct ipr_hostrcb_type_07_error, data))); 1326} 1327 1328static const struct { 1329 u8 active; 1330 char *desc; 1331} path_active_desc[] = { 1332 { IPR_PATH_NO_INFO, "Path" }, 1333 { IPR_PATH_ACTIVE, "Active path" }, 1334 { IPR_PATH_NOT_ACTIVE, "Inactive path" } 1335}; 1336 1337static const struct { 1338 u8 state; 1339 char *desc; 1340} path_state_desc[] = { 1341 { IPR_PATH_STATE_NO_INFO, "has no path state information available" }, 1342 { IPR_PATH_HEALTHY, "is healthy" }, 1343 { IPR_PATH_DEGRADED, "is degraded" }, 1344 { IPR_PATH_FAILED, "is failed" } 1345}; 1346 1347/** 1348 * ipr_log_fabric_path - Log a fabric path error 1349 * @hostrcb: hostrcb struct 1350 * @fabric: fabric descriptor 1351 * 1352 * Return value: 1353 * none 1354 **/ 1355static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb, 1356 struct ipr_hostrcb_fabric_desc *fabric) 1357{ 1358 int i, j; 1359 u8 path_state = fabric->path_state; 1360 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 1361 u8 state = path_state & IPR_PATH_STATE_MASK; 1362 1363 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 1364 if (path_active_desc[i].active != active) 1365 continue; 1366 1367 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 1368 if (path_state_desc[j].state != state) 1369 continue; 1370 1371 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) { 1372 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n", 1373 path_active_desc[i].desc, path_state_desc[j].desc, 1374 fabric->ioa_port); 1375 } else if (fabric->cascaded_expander == 0xff) { 1376 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n", 1377 path_active_desc[i].desc, path_state_desc[j].desc, 1378 fabric->ioa_port, fabric->phy); 1379 } else if (fabric->phy == 0xff) { 1380 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n", 1381 path_active_desc[i].desc, path_state_desc[j].desc, 1382 fabric->ioa_port, fabric->cascaded_expander); 1383 } else { 1384 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n", 1385 path_active_desc[i].desc, path_state_desc[j].desc, 1386 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1387 } 1388 return; 1389 } 1390 } 1391 1392 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state, 1393 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1394} 1395 1396static const struct { 1397 u8 type; 1398 char *desc; 1399} path_type_desc[] = { 1400 { IPR_PATH_CFG_IOA_PORT, "IOA port" }, 1401 { IPR_PATH_CFG_EXP_PORT, "Expander port" }, 1402 { IPR_PATH_CFG_DEVICE_PORT, "Device port" }, 1403 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" } 1404}; 1405 1406static const struct { 1407 u8 status; 1408 char *desc; 1409} path_status_desc[] = { 1410 { IPR_PATH_CFG_NO_PROB, "Functional" }, 1411 { IPR_PATH_CFG_DEGRADED, "Degraded" }, 1412 { IPR_PATH_CFG_FAILED, "Failed" }, 1413 { IPR_PATH_CFG_SUSPECT, "Suspect" }, 1414 { IPR_PATH_NOT_DETECTED, "Missing" }, 1415 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" } 1416}; 1417 1418static const char *link_rate[] = { 1419 "unknown", 1420 "disabled", 1421 "phy reset problem", 1422 "spinup hold", 1423 "port selector", 1424 "unknown", 1425 "unknown", 1426 "unknown", 1427 "1.5Gbps", 1428 "3.0Gbps", 1429 "unknown", 1430 "unknown", 1431 "unknown", 1432 "unknown", 1433 "unknown", 1434 "unknown" 1435}; 1436 1437/** 1438 * ipr_log_path_elem - Log a fabric path element. 1439 * @hostrcb: hostrcb struct 1440 * @cfg: fabric path element struct 1441 * 1442 * Return value: 1443 * none 1444 **/ 1445static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb, 1446 struct ipr_hostrcb_config_element *cfg) 1447{ 1448 int i, j; 1449 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 1450 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 1451 1452 if (type == IPR_PATH_CFG_NOT_EXIST) 1453 return; 1454 1455 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 1456 if (path_type_desc[i].type != type) 1457 continue; 1458 1459 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 1460 if (path_status_desc[j].status != status) 1461 continue; 1462 1463 if (type == IPR_PATH_CFG_IOA_PORT) { 1464 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n", 1465 path_status_desc[j].desc, path_type_desc[i].desc, 1466 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1467 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1468 } else { 1469 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) { 1470 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n", 1471 path_status_desc[j].desc, path_type_desc[i].desc, 1472 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1473 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1474 } else if (cfg->cascaded_expander == 0xff) { 1475 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, " 1476 "WWN=%08X%08X\n", path_status_desc[j].desc, 1477 path_type_desc[i].desc, cfg->phy, 1478 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1479 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1480 } else if (cfg->phy == 0xff) { 1481 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, " 1482 "WWN=%08X%08X\n", path_status_desc[j].desc, 1483 path_type_desc[i].desc, cfg->cascaded_expander, 1484 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1485 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1486 } else { 1487 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s " 1488 "WWN=%08X%08X\n", path_status_desc[j].desc, 1489 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy, 1490 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1491 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1492 } 1493 } 1494 return; 1495 } 1496 } 1497 1498 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s " 1499 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy, 1500 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1501 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1502} 1503 1504/** 1505 * ipr_log_fabric_error - Log a fabric error. 1506 * @ioa_cfg: ioa config struct 1507 * @hostrcb: hostrcb struct 1508 * 1509 * Return value: 1510 * none 1511 **/ 1512static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 1513 struct ipr_hostrcb *hostrcb) 1514{ 1515 struct ipr_hostrcb_type_20_error *error; 1516 struct ipr_hostrcb_fabric_desc *fabric; 1517 struct ipr_hostrcb_config_element *cfg; 1518 int i, add_len; 1519 1520 error = &hostrcb->hcam.u.error.u.type_20_error; 1521 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1522 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 1523 1524 add_len = be32_to_cpu(hostrcb->hcam.length) - 1525 (offsetof(struct ipr_hostrcb_error, u) + 1526 offsetof(struct ipr_hostrcb_type_20_error, desc)); 1527 1528 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 1529 ipr_log_fabric_path(hostrcb, fabric); 1530 for_each_fabric_cfg(fabric, cfg) 1531 ipr_log_path_elem(hostrcb, cfg); 1532 1533 add_len -= be16_to_cpu(fabric->length); 1534 fabric = (struct ipr_hostrcb_fabric_desc *) 1535 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 1536 } 1537 1538 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len); 1539} 1540 1541/** 1542 * ipr_log_generic_error - Log an adapter error. 1543 * @ioa_cfg: ioa config struct 1544 * @hostrcb: hostrcb struct 1545 * 1546 * Return value: 1547 * none 1548 **/ 1549static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, 1550 struct ipr_hostrcb *hostrcb) 1551{ 1552 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data, 1553 be32_to_cpu(hostrcb->hcam.length)); 1554} 1555 1556/** 1557 * ipr_get_error - Find the specfied IOASC in the ipr_error_table. 1558 * @ioasc: IOASC 1559 * 1560 * This function will return the index of into the ipr_error_table 1561 * for the specified IOASC. If the IOASC is not in the table, 1562 * 0 will be returned, which points to the entry used for unknown errors. 1563 * 1564 * Return value: 1565 * index into the ipr_error_table 1566 **/ 1567static u32 ipr_get_error(u32 ioasc) 1568{ 1569 int i; 1570 1571 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) 1572 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK)) 1573 return i; 1574 1575 return 0; 1576} 1577 1578/** 1579 * ipr_handle_log_data - Log an adapter error. 1580 * @ioa_cfg: ioa config struct 1581 * @hostrcb: hostrcb struct 1582 * 1583 * This function logs an adapter error to the system. 1584 * 1585 * Return value: 1586 * none 1587 **/ 1588static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 1589 struct ipr_hostrcb *hostrcb) 1590{ 1591 u32 ioasc; 1592 int error_index; 1593 1594 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) 1595 return; 1596 1597 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) 1598 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); 1599 1600 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc); 1601 1602 if (ioasc == IPR_IOASC_BUS_WAS_RESET || 1603 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) { 1604 /* Tell the midlayer we had a bus reset so it will handle the UA properly */ 1605 scsi_report_bus_reset(ioa_cfg->host, 1606 hostrcb->hcam.u.error.failing_dev_res_addr.bus); 1607 } 1608 1609 error_index = ipr_get_error(ioasc); 1610 1611 if (!ipr_error_table[error_index].log_hcam) 1612 return; 1613 1614 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error); 1615 1616 /* Set indication we have logged an error */ 1617 ioa_cfg->errors_logged++; 1618 1619 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 1620 return; 1621 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw)) 1622 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw)); 1623 1624 switch (hostrcb->hcam.overlay_id) { 1625 case IPR_HOST_RCB_OVERLAY_ID_2: 1626 ipr_log_cache_error(ioa_cfg, hostrcb); 1627 break; 1628 case IPR_HOST_RCB_OVERLAY_ID_3: 1629 ipr_log_config_error(ioa_cfg, hostrcb); 1630 break; 1631 case IPR_HOST_RCB_OVERLAY_ID_4: 1632 case IPR_HOST_RCB_OVERLAY_ID_6: 1633 ipr_log_array_error(ioa_cfg, hostrcb); 1634 break; 1635 case IPR_HOST_RCB_OVERLAY_ID_7: 1636 ipr_log_dual_ioa_error(ioa_cfg, hostrcb); 1637 break; 1638 case IPR_HOST_RCB_OVERLAY_ID_12: 1639 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb); 1640 break; 1641 case IPR_HOST_RCB_OVERLAY_ID_13: 1642 ipr_log_enhanced_config_error(ioa_cfg, hostrcb); 1643 break; 1644 case IPR_HOST_RCB_OVERLAY_ID_14: 1645 case IPR_HOST_RCB_OVERLAY_ID_16: 1646 ipr_log_enhanced_array_error(ioa_cfg, hostrcb); 1647 break; 1648 case IPR_HOST_RCB_OVERLAY_ID_17: 1649 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb); 1650 break; 1651 case IPR_HOST_RCB_OVERLAY_ID_20: 1652 ipr_log_fabric_error(ioa_cfg, hostrcb); 1653 break; 1654 case IPR_HOST_RCB_OVERLAY_ID_1: 1655 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: 1656 default: 1657 ipr_log_generic_error(ioa_cfg, hostrcb); 1658 break; 1659 } 1660} 1661 1662/** 1663 * ipr_process_error - Op done function for an adapter error log. 1664 * @ipr_cmd: ipr command struct 1665 * 1666 * This function is the op done function for an error log host 1667 * controlled async from the adapter. It will log the error and 1668 * send the HCAM back to the adapter. 1669 * 1670 * Return value: 1671 * none 1672 **/ 1673static void ipr_process_error(struct ipr_cmnd *ipr_cmd) 1674{ 1675 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1676 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 1677 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 1678 1679 list_del(&hostrcb->queue); 1680 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 1681 1682 if (!ioasc) { 1683 ipr_handle_log_data(ioa_cfg, hostrcb); 1684 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) { 1685 dev_err(&ioa_cfg->pdev->dev, 1686 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 1687 } 1688 1689 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 1690} 1691 1692/** 1693 * ipr_timeout - An internally generated op has timed out. 1694 * @ipr_cmd: ipr command struct 1695 * 1696 * This function blocks host requests and initiates an 1697 * adapter reset. 1698 * 1699 * Return value: 1700 * none 1701 **/ 1702static void ipr_timeout(struct ipr_cmnd *ipr_cmd) 1703{ 1704 unsigned long lock_flags = 0; 1705 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1706 1707 ENTER; 1708 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1709 1710 ioa_cfg->errors_logged++; 1711 dev_err(&ioa_cfg->pdev->dev, 1712 "Adapter being reset due to command timeout.\n"); 1713 1714 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 1715 ioa_cfg->sdt_state = GET_DUMP; 1716 1717 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) 1718 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 1719 1720 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1721 LEAVE; 1722} 1723 1724/** 1725 * ipr_oper_timeout - Adapter timed out transitioning to operational 1726 * @ipr_cmd: ipr command struct 1727 * 1728 * This function blocks host requests and initiates an 1729 * adapter reset. 1730 * 1731 * Return value: 1732 * none 1733 **/ 1734static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) 1735{ 1736 unsigned long lock_flags = 0; 1737 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1738 1739 ENTER; 1740 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1741 1742 ioa_cfg->errors_logged++; 1743 dev_err(&ioa_cfg->pdev->dev, 1744 "Adapter timed out transitioning to operational.\n"); 1745 1746 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 1747 ioa_cfg->sdt_state = GET_DUMP; 1748 1749 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { 1750 if (ipr_fastfail) 1751 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 1752 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 1753 } 1754 1755 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1756 LEAVE; 1757} 1758 1759/** 1760 * ipr_reset_reload - Reset/Reload the IOA 1761 * @ioa_cfg: ioa config struct 1762 * @shutdown_type: shutdown type 1763 * 1764 * This function resets the adapter and re-initializes it. 1765 * This function assumes that all new host commands have been stopped. 1766 * Return value: 1767 * SUCCESS / FAILED 1768 **/ 1769static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg, 1770 enum ipr_shutdown_type shutdown_type) 1771{ 1772 if (!ioa_cfg->in_reset_reload) 1773 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 1774 1775 spin_unlock_irq(ioa_cfg->host->host_lock); 1776 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 1777 spin_lock_irq(ioa_cfg->host->host_lock); 1778 1779 /* If we got hit with a host reset while we were already resetting 1780 the adapter for some reason, and the reset failed. */ 1781 if (ioa_cfg->ioa_is_dead) { 1782 ipr_trace; 1783 return FAILED; 1784 } 1785 1786 return SUCCESS; 1787} 1788 1789/** 1790 * ipr_find_ses_entry - Find matching SES in SES table 1791 * @res: resource entry struct of SES 1792 * 1793 * Return value: 1794 * pointer to SES table entry / NULL on failure 1795 **/ 1796static const struct ipr_ses_table_entry * 1797ipr_find_ses_entry(struct ipr_resource_entry *res) 1798{ 1799 int i, j, matches; 1800 const struct ipr_ses_table_entry *ste = ipr_ses_table; 1801 1802 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { 1803 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { 1804 if (ste->compare_product_id_byte[j] == 'X') { 1805 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j]) 1806 matches++; 1807 else 1808 break; 1809 } else 1810 matches++; 1811 } 1812 1813 if (matches == IPR_PROD_ID_LEN) 1814 return ste; 1815 } 1816 1817 return NULL; 1818} 1819 1820/** 1821 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus 1822 * @ioa_cfg: ioa config struct 1823 * @bus: SCSI bus 1824 * @bus_width: bus width 1825 * 1826 * Return value: 1827 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz 1828 * For a 2-byte wide SCSI bus, the maximum transfer speed is 1829 * twice the maximum transfer rate (e.g. for a wide enabled bus, 1830 * max 160MHz = max 320MB/sec). 1831 **/ 1832static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) 1833{ 1834 struct ipr_resource_entry *res; 1835 const struct ipr_ses_table_entry *ste; 1836 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); 1837 1838 /* Loop through each config table entry in the config table buffer */ 1839 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1840 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data))) 1841 continue; 1842 1843 if (bus != res->cfgte.res_addr.bus) 1844 continue; 1845 1846 if (!(ste = ipr_find_ses_entry(res))) 1847 continue; 1848 1849 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); 1850 } 1851 1852 return max_xfer_rate; 1853} 1854 1855/** 1856 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA 1857 * @ioa_cfg: ioa config struct 1858 * @max_delay: max delay in micro-seconds to wait 1859 * 1860 * Waits for an IODEBUG ACK from the IOA, doing busy looping. 1861 * 1862 * Return value: 1863 * 0 on success / other on failure 1864 **/ 1865static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) 1866{ 1867 volatile u32 pcii_reg; 1868 int delay = 1; 1869 1870 /* Read interrupt reg until IOA signals IO Debug Acknowledge */ 1871 while (delay < max_delay) { 1872 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 1873 1874 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) 1875 return 0; 1876 1877 /* udelay cannot be used if delay is more than a few milliseconds */ 1878 if ((delay / 1000) > MAX_UDELAY_MS) 1879 mdelay(delay / 1000); 1880 else 1881 udelay(delay); 1882 1883 delay += delay; 1884 } 1885 return -EIO; 1886} 1887 1888/** 1889 * ipr_get_ldump_data_section - Dump IOA memory 1890 * @ioa_cfg: ioa config struct 1891 * @start_addr: adapter address to dump 1892 * @dest: destination kernel buffer 1893 * @length_in_words: length to dump in 4 byte words 1894 * 1895 * Return value: 1896 * 0 on success / -EIO on failure 1897 **/ 1898static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, 1899 u32 start_addr, 1900 __be32 *dest, u32 length_in_words) 1901{ 1902 volatile u32 temp_pcii_reg; 1903 int i, delay = 0; 1904 1905 /* Write IOA interrupt reg starting LDUMP state */ 1906 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), 1907 ioa_cfg->regs.set_uproc_interrupt_reg); 1908 1909 /* Wait for IO debug acknowledge */ 1910 if (ipr_wait_iodbg_ack(ioa_cfg, 1911 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { 1912 dev_err(&ioa_cfg->pdev->dev, 1913 "IOA dump long data transfer timeout\n"); 1914 return -EIO; 1915 } 1916 1917 /* Signal LDUMP interlocked - clear IO debug ack */ 1918 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1919 ioa_cfg->regs.clr_interrupt_reg); 1920 1921 /* Write Mailbox with starting address */ 1922 writel(start_addr, ioa_cfg->ioa_mailbox); 1923 1924 /* Signal address valid - clear IOA Reset alert */ 1925 writel(IPR_UPROCI_RESET_ALERT, 1926 ioa_cfg->regs.clr_uproc_interrupt_reg); 1927 1928 for (i = 0; i < length_in_words; i++) { 1929 /* Wait for IO debug acknowledge */ 1930 if (ipr_wait_iodbg_ack(ioa_cfg, 1931 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { 1932 dev_err(&ioa_cfg->pdev->dev, 1933 "IOA dump short data transfer timeout\n"); 1934 return -EIO; 1935 } 1936 1937 /* Read data from mailbox and increment destination pointer */ 1938 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); 1939 dest++; 1940 1941 /* For all but the last word of data, signal data received */ 1942 if (i < (length_in_words - 1)) { 1943 /* Signal dump data received - Clear IO debug Ack */ 1944 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1945 ioa_cfg->regs.clr_interrupt_reg); 1946 } 1947 } 1948 1949 /* Signal end of block transfer. Set reset alert then clear IO debug ack */ 1950 writel(IPR_UPROCI_RESET_ALERT, 1951 ioa_cfg->regs.set_uproc_interrupt_reg); 1952 1953 writel(IPR_UPROCI_IO_DEBUG_ALERT, 1954 ioa_cfg->regs.clr_uproc_interrupt_reg); 1955 1956 /* Signal dump data received - Clear IO debug Ack */ 1957 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1958 ioa_cfg->regs.clr_interrupt_reg); 1959 1960 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ 1961 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { 1962 temp_pcii_reg = 1963 readl(ioa_cfg->regs.sense_uproc_interrupt_reg); 1964 1965 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) 1966 return 0; 1967 1968 udelay(10); 1969 delay += 10; 1970 } 1971 1972 return 0; 1973} 1974 1975#ifdef CONFIG_SCSI_IPR_DUMP 1976/** 1977 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer 1978 * @ioa_cfg: ioa config struct 1979 * @pci_address: adapter address 1980 * @length: length of data to copy 1981 * 1982 * Copy data from PCI adapter to kernel buffer. 1983 * Note: length MUST be a 4 byte multiple 1984 * Return value: 1985 * 0 on success / other on failure 1986 **/ 1987static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, 1988 unsigned long pci_address, u32 length) 1989{ 1990 int bytes_copied = 0; 1991 int cur_len, rc, rem_len, rem_page_len; 1992 __be32 *page; 1993 unsigned long lock_flags = 0; 1994 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; 1995 1996 while (bytes_copied < length && 1997 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) { 1998 if (ioa_dump->page_offset >= PAGE_SIZE || 1999 ioa_dump->page_offset == 0) { 2000 page = (__be32 *)__get_free_page(GFP_ATOMIC); 2001 2002 if (!page) { 2003 ipr_trace; 2004 return bytes_copied; 2005 } 2006 2007 ioa_dump->page_offset = 0; 2008 ioa_dump->ioa_data[ioa_dump->next_page_index] = page; 2009 ioa_dump->next_page_index++; 2010 } else 2011 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; 2012 2013 rem_len = length - bytes_copied; 2014 rem_page_len = PAGE_SIZE - ioa_dump->page_offset; 2015 cur_len = min(rem_len, rem_page_len); 2016 2017 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2018 if (ioa_cfg->sdt_state == ABORT_DUMP) { 2019 rc = -EIO; 2020 } else { 2021 rc = ipr_get_ldump_data_section(ioa_cfg, 2022 pci_address + bytes_copied, 2023 &page[ioa_dump->page_offset / 4], 2024 (cur_len / sizeof(u32))); 2025 } 2026 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2027 2028 if (!rc) { 2029 ioa_dump->page_offset += cur_len; 2030 bytes_copied += cur_len; 2031 } else { 2032 ipr_trace; 2033 break; 2034 } 2035 schedule(); 2036 } 2037 2038 return bytes_copied; 2039} 2040 2041/** 2042 * ipr_init_dump_entry_hdr - Initialize a dump entry header. 2043 * @hdr: dump entry header struct 2044 * 2045 * Return value: 2046 * nothing 2047 **/ 2048static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) 2049{ 2050 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; 2051 hdr->num_elems = 1; 2052 hdr->offset = sizeof(*hdr); 2053 hdr->status = IPR_DUMP_STATUS_SUCCESS; 2054} 2055 2056/** 2057 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. 2058 * @ioa_cfg: ioa config struct 2059 * @driver_dump: driver dump struct 2060 * 2061 * Return value: 2062 * nothing 2063 **/ 2064static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, 2065 struct ipr_driver_dump *driver_dump) 2066{ 2067 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2068 2069 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); 2070 driver_dump->ioa_type_entry.hdr.len = 2071 sizeof(struct ipr_dump_ioa_type_entry) - 2072 sizeof(struct ipr_dump_entry_header); 2073 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2074 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; 2075 driver_dump->ioa_type_entry.type = ioa_cfg->type; 2076 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | 2077 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | 2078 ucode_vpd->minor_release[1]; 2079 driver_dump->hdr.num_entries++; 2080} 2081 2082/** 2083 * ipr_dump_version_data - Fill in the driver version in the dump. 2084 * @ioa_cfg: ioa config struct 2085 * @driver_dump: driver dump struct 2086 * 2087 * Return value: 2088 * nothing 2089 **/ 2090static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, 2091 struct ipr_driver_dump *driver_dump) 2092{ 2093 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); 2094 driver_dump->version_entry.hdr.len = 2095 sizeof(struct ipr_dump_version_entry) - 2096 sizeof(struct ipr_dump_entry_header); 2097 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2098 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; 2099 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); 2100 driver_dump->hdr.num_entries++; 2101} 2102 2103/** 2104 * ipr_dump_trace_data - Fill in the IOA trace in the dump. 2105 * @ioa_cfg: ioa config struct 2106 * @driver_dump: driver dump struct 2107 * 2108 * Return value: 2109 * nothing 2110 **/ 2111static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, 2112 struct ipr_driver_dump *driver_dump) 2113{ 2114 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); 2115 driver_dump->trace_entry.hdr.len = 2116 sizeof(struct ipr_dump_trace_entry) - 2117 sizeof(struct ipr_dump_entry_header); 2118 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2119 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; 2120 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); 2121 driver_dump->hdr.num_entries++; 2122} 2123 2124/** 2125 * ipr_dump_location_data - Fill in the IOA location in the dump. 2126 * @ioa_cfg: ioa config struct 2127 * @driver_dump: driver dump struct 2128 * 2129 * Return value: 2130 * nothing 2131 **/ 2132static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, 2133 struct ipr_driver_dump *driver_dump) 2134{ 2135 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); 2136 driver_dump->location_entry.hdr.len = 2137 sizeof(struct ipr_dump_location_entry) - 2138 sizeof(struct ipr_dump_entry_header); 2139 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2140 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; 2141 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id); 2142 driver_dump->hdr.num_entries++; 2143} 2144 2145/** 2146 * ipr_get_ioa_dump - Perform a dump of the driver and adapter. 2147 * @ioa_cfg: ioa config struct 2148 * @dump: dump struct 2149 * 2150 * Return value: 2151 * nothing 2152 **/ 2153static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) 2154{ 2155 unsigned long start_addr, sdt_word; 2156 unsigned long lock_flags = 0; 2157 struct ipr_driver_dump *driver_dump = &dump->driver_dump; 2158 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; 2159 u32 num_entries, start_off, end_off; 2160 u32 bytes_to_copy, bytes_copied, rc; 2161 struct ipr_sdt *sdt; 2162 int i; 2163 2164 ENTER; 2165 2166 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2167 2168 if (ioa_cfg->sdt_state != GET_DUMP) { 2169 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2170 return; 2171 } 2172 2173 start_addr = readl(ioa_cfg->ioa_mailbox); 2174 2175 if (!ipr_sdt_is_fmt2(start_addr)) { 2176 dev_err(&ioa_cfg->pdev->dev, 2177 "Invalid dump table format: %lx\n", start_addr); 2178 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2179 return; 2180 } 2181 2182 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); 2183 2184 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; 2185 2186 /* Initialize the overall dump header */ 2187 driver_dump->hdr.len = sizeof(struct ipr_driver_dump); 2188 driver_dump->hdr.num_entries = 1; 2189 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); 2190 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; 2191 driver_dump->hdr.os = IPR_DUMP_OS_LINUX; 2192 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; 2193 2194 ipr_dump_version_data(ioa_cfg, driver_dump); 2195 ipr_dump_location_data(ioa_cfg, driver_dump); 2196 ipr_dump_ioa_type_data(ioa_cfg, driver_dump); 2197 ipr_dump_trace_data(ioa_cfg, driver_dump); 2198 2199 /* Update dump_header */ 2200 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); 2201 2202 /* IOA Dump entry */ 2203 ipr_init_dump_entry_hdr(&ioa_dump->hdr); 2204 ioa_dump->format = IPR_SDT_FMT2; 2205 ioa_dump->hdr.len = 0; 2206 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2207 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; 2208 2209 /* First entries in sdt are actually a list of dump addresses and 2210 lengths to gather the real dump data. sdt represents the pointer 2211 to the ioa generated dump table. Dump data will be extracted based 2212 on entries in this table */ 2213 sdt = &ioa_dump->sdt; 2214 2215 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, 2216 sizeof(struct ipr_sdt) / sizeof(__be32)); 2217 2218 /* Smart Dump table is ready to use and the first entry is valid */ 2219 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) { 2220 dev_err(&ioa_cfg->pdev->dev, 2221 "Dump of IOA failed. Dump table not valid: %d, %X.\n", 2222 rc, be32_to_cpu(sdt->hdr.state)); 2223 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; 2224 ioa_cfg->sdt_state = DUMP_OBTAINED; 2225 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2226 return; 2227 } 2228 2229 num_entries = be32_to_cpu(sdt->hdr.num_entries_used); 2230 2231 if (num_entries > IPR_NUM_SDT_ENTRIES) 2232 num_entries = IPR_NUM_SDT_ENTRIES; 2233 2234 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2235 2236 for (i = 0; i < num_entries; i++) { 2237 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) { 2238 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 2239 break; 2240 } 2241 2242 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { 2243 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset); 2244 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; 2245 end_off = be32_to_cpu(sdt->entry[i].end_offset); 2246 2247 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) { 2248 bytes_to_copy = end_off - start_off; 2249 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) { 2250 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; 2251 continue; 2252 } 2253 2254 /* Copy data from adapter to driver buffers */ 2255 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, 2256 bytes_to_copy); 2257 2258 ioa_dump->hdr.len += bytes_copied; 2259 2260 if (bytes_copied != bytes_to_copy) { 2261 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 2262 break; 2263 } 2264 } 2265 } 2266 } 2267 2268 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); 2269 2270 /* Update dump_header */ 2271 driver_dump->hdr.len += ioa_dump->hdr.len; 2272 wmb(); 2273 ioa_cfg->sdt_state = DUMP_OBTAINED; 2274 LEAVE; 2275} 2276 2277#else 2278#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0) 2279#endif 2280 2281/** 2282 * ipr_release_dump - Free adapter dump memory 2283 * @kref: kref struct 2284 * 2285 * Return value: 2286 * nothing 2287 **/ 2288static void ipr_release_dump(struct kref *kref) 2289{ 2290 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref); 2291 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; 2292 unsigned long lock_flags = 0; 2293 int i; 2294 2295 ENTER; 2296 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2297 ioa_cfg->dump = NULL; 2298 ioa_cfg->sdt_state = INACTIVE; 2299 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2300 2301 for (i = 0; i < dump->ioa_dump.next_page_index; i++) 2302 free_page((unsigned long) dump->ioa_dump.ioa_data[i]); 2303 2304 kfree(dump); 2305 LEAVE; 2306} 2307 2308/** 2309 * ipr_worker_thread - Worker thread 2310 * @data: ioa config struct 2311 * 2312 * Called at task level from a work thread. This function takes care 2313 * of adding and removing device from the mid-layer as configuration 2314 * changes are detected by the adapter. 2315 * 2316 * Return value: 2317 * nothing 2318 **/ 2319static void ipr_worker_thread(void *data) 2320{ 2321 unsigned long lock_flags; 2322 struct ipr_resource_entry *res; 2323 struct scsi_device *sdev; 2324 struct ipr_dump *dump; 2325 struct ipr_ioa_cfg *ioa_cfg = data; 2326 u8 bus, target, lun; 2327 int did_work; 2328 2329 ENTER; 2330 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2331 2332 if (ioa_cfg->sdt_state == GET_DUMP) { 2333 dump = ioa_cfg->dump; 2334 if (!dump) { 2335 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2336 return; 2337 } 2338 kref_get(&dump->kref); 2339 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2340 ipr_get_ioa_dump(ioa_cfg, dump); 2341 kref_put(&dump->kref, ipr_release_dump); 2342 2343 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2344 if (ioa_cfg->sdt_state == DUMP_OBTAINED) 2345 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2346 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2347 return; 2348 } 2349 2350restart: 2351 do { 2352 did_work = 0; 2353 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) { 2354 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2355 return; 2356 } 2357 2358 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2359 if (res->del_from_ml && res->sdev) { 2360 did_work = 1; 2361 sdev = res->sdev; 2362 if (!scsi_device_get(sdev)) { 2363 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 2364 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2365 scsi_remove_device(sdev); 2366 scsi_device_put(sdev); 2367 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2368 } 2369 break; 2370 } 2371 } 2372 } while(did_work); 2373 2374 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2375 if (res->add_to_ml) { 2376 bus = res->cfgte.res_addr.bus; 2377 target = res->cfgte.res_addr.target; 2378 lun = res->cfgte.res_addr.lun; 2379 res->add_to_ml = 0; 2380 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2381 scsi_add_device(ioa_cfg->host, bus, target, lun); 2382 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2383 goto restart; 2384 } 2385 } 2386 2387 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2388 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE); 2389 LEAVE; 2390} 2391 2392#ifdef CONFIG_SCSI_IPR_TRACE 2393/** 2394 * ipr_read_trace - Dump the adapter trace 2395 * @kobj: kobject struct 2396 * @buf: buffer 2397 * @off: offset 2398 * @count: buffer size 2399 * 2400 * Return value: 2401 * number of bytes printed to buffer 2402 **/ 2403static ssize_t ipr_read_trace(struct kobject *kobj, char *buf, 2404 loff_t off, size_t count) 2405{ 2406 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 2407 struct Scsi_Host *shost = class_to_shost(cdev); 2408 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2409 unsigned long lock_flags = 0; 2410 int size = IPR_TRACE_SIZE; 2411 char *src = (char *)ioa_cfg->trace; 2412 2413 if (off > size) 2414 return 0; 2415 if (off + count > size) { 2416 size -= off; 2417 count = size; 2418 } 2419 2420 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2421 memcpy(buf, &src[off], count); 2422 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2423 return count; 2424} 2425 2426static struct bin_attribute ipr_trace_attr = { 2427 .attr = { 2428 .name = "trace", 2429 .mode = S_IRUGO, 2430 }, 2431 .size = 0, 2432 .read = ipr_read_trace, 2433}; 2434#endif 2435 2436static const struct { 2437 enum ipr_cache_state state; 2438 char *name; 2439} cache_state [] = { 2440 { CACHE_NONE, "none" }, 2441 { CACHE_DISABLED, "disabled" }, 2442 { CACHE_ENABLED, "enabled" } 2443}; 2444 2445/** 2446 * ipr_show_write_caching - Show the write caching attribute 2447 * @class_dev: class device struct 2448 * @buf: buffer 2449 * 2450 * Return value: 2451 * number of bytes printed to buffer 2452 **/ 2453static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf) 2454{ 2455 struct Scsi_Host *shost = class_to_shost(class_dev); 2456 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2457 unsigned long lock_flags = 0; 2458 int i, len = 0; 2459 2460 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2461 for (i = 0; i < ARRAY_SIZE(cache_state); i++) { 2462 if (cache_state[i].state == ioa_cfg->cache_state) { 2463 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name); 2464 break; 2465 } 2466 } 2467 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2468 return len; 2469} 2470 2471 2472/** 2473 * ipr_store_write_caching - Enable/disable adapter write cache 2474 * @class_dev: class_device struct 2475 * @buf: buffer 2476 * @count: buffer size 2477 * 2478 * This function will enable/disable adapter write cache. 2479 * 2480 * Return value: 2481 * count on success / other on failure 2482 **/ 2483static ssize_t ipr_store_write_caching(struct class_device *class_dev, 2484 const char *buf, size_t count) 2485{ 2486 struct Scsi_Host *shost = class_to_shost(class_dev); 2487 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2488 unsigned long lock_flags = 0; 2489 enum ipr_cache_state new_state = CACHE_INVALID; 2490 int i; 2491 2492 if (!capable(CAP_SYS_ADMIN)) 2493 return -EACCES; 2494 if (ioa_cfg->cache_state == CACHE_NONE) 2495 return -EINVAL; 2496 2497 for (i = 0; i < ARRAY_SIZE(cache_state); i++) { 2498 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) { 2499 new_state = cache_state[i].state; 2500 break; 2501 } 2502 } 2503 2504 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED) 2505 return -EINVAL; 2506 2507 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2508 if (ioa_cfg->cache_state == new_state) { 2509 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2510 return count; 2511 } 2512 2513 ioa_cfg->cache_state = new_state; 2514 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n", 2515 new_state == CACHE_ENABLED ? "Enabling" : "Disabling"); 2516 if (!ioa_cfg->in_reset_reload) 2517 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2518 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2519 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2520 2521 return count; 2522} 2523 2524static struct class_device_attribute ipr_ioa_cache_attr = { 2525 .attr = { 2526 .name = "write_cache", 2527 .mode = S_IRUGO | S_IWUSR, 2528 }, 2529 .show = ipr_show_write_caching, 2530 .store = ipr_store_write_caching 2531}; 2532 2533/** 2534 * ipr_show_fw_version - Show the firmware version 2535 * @class_dev: class device struct 2536 * @buf: buffer 2537 * 2538 * Return value: 2539 * number of bytes printed to buffer 2540 **/ 2541static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf) 2542{ 2543 struct Scsi_Host *shost = class_to_shost(class_dev); 2544 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2545 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2546 unsigned long lock_flags = 0; 2547 int len; 2548 2549 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2550 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 2551 ucode_vpd->major_release, ucode_vpd->card_type, 2552 ucode_vpd->minor_release[0], 2553 ucode_vpd->minor_release[1]); 2554 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2555 return len; 2556} 2557 2558static struct class_device_attribute ipr_fw_version_attr = { 2559 .attr = { 2560 .name = "fw_version", 2561 .mode = S_IRUGO, 2562 }, 2563 .show = ipr_show_fw_version, 2564}; 2565 2566/** 2567 * ipr_show_log_level - Show the adapter's error logging level 2568 * @class_dev: class device struct 2569 * @buf: buffer 2570 * 2571 * Return value: 2572 * number of bytes printed to buffer 2573 **/ 2574static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf) 2575{ 2576 struct Scsi_Host *shost = class_to_shost(class_dev); 2577 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2578 unsigned long lock_flags = 0; 2579 int len; 2580 2581 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2582 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 2583 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2584 return len; 2585} 2586 2587/** 2588 * ipr_store_log_level - Change the adapter's error logging level 2589 * @class_dev: class device struct 2590 * @buf: buffer 2591 * 2592 * Return value: 2593 * number of bytes printed to buffer 2594 **/ 2595static ssize_t ipr_store_log_level(struct class_device *class_dev, 2596 const char *buf, size_t count) 2597{ 2598 struct Scsi_Host *shost = class_to_shost(class_dev); 2599 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2600 unsigned long lock_flags = 0; 2601 2602 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2603 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 2604 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2605 return strlen(buf); 2606} 2607 2608static struct class_device_attribute ipr_log_level_attr = { 2609 .attr = { 2610 .name = "log_level", 2611 .mode = S_IRUGO | S_IWUSR, 2612 }, 2613 .show = ipr_show_log_level, 2614 .store = ipr_store_log_level 2615}; 2616 2617/** 2618 * ipr_store_diagnostics - IOA Diagnostics interface 2619 * @class_dev: class_device struct 2620 * @buf: buffer 2621 * @count: buffer size 2622 * 2623 * This function will reset the adapter and wait a reasonable 2624 * amount of time for any errors that the adapter might log. 2625 * 2626 * Return value: 2627 * count on success / other on failure 2628 **/ 2629static ssize_t ipr_store_diagnostics(struct class_device *class_dev, 2630 const char *buf, size_t count) 2631{ 2632 struct Scsi_Host *shost = class_to_shost(class_dev); 2633 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2634 unsigned long lock_flags = 0; 2635 int rc = count; 2636 2637 if (!capable(CAP_SYS_ADMIN)) 2638 return -EACCES; 2639 2640 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2641 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2642 ioa_cfg->errors_logged = 0; 2643 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2644 2645 if (ioa_cfg->in_reset_reload) { 2646 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2647 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2648 2649 /* Wait for a second for any errors to be logged */ 2650 msleep(1000); 2651 } else { 2652 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2653 return -EIO; 2654 } 2655 2656 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2657 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 2658 rc = -EIO; 2659 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2660 2661 return rc; 2662} 2663 2664static struct class_device_attribute ipr_diagnostics_attr = { 2665 .attr = { 2666 .name = "run_diagnostics", 2667 .mode = S_IWUSR, 2668 }, 2669 .store = ipr_store_diagnostics 2670}; 2671 2672/** 2673 * ipr_show_adapter_state - Show the adapter's state 2674 * @class_dev: class device struct 2675 * @buf: buffer 2676 * 2677 * Return value: 2678 * number of bytes printed to buffer 2679 **/ 2680static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf) 2681{ 2682 struct Scsi_Host *shost = class_to_shost(class_dev); 2683 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2684 unsigned long lock_flags = 0; 2685 int len; 2686 2687 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2688 if (ioa_cfg->ioa_is_dead) 2689 len = snprintf(buf, PAGE_SIZE, "offline\n"); 2690 else 2691 len = snprintf(buf, PAGE_SIZE, "online\n"); 2692 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2693 return len; 2694} 2695 2696/** 2697 * ipr_store_adapter_state - Change adapter state 2698 * @class_dev: class_device struct 2699 * @buf: buffer 2700 * @count: buffer size 2701 * 2702 * This function will change the adapter's state. 2703 * 2704 * Return value: 2705 * count on success / other on failure 2706 **/ 2707static ssize_t ipr_store_adapter_state(struct class_device *class_dev, 2708 const char *buf, size_t count) 2709{ 2710 struct Scsi_Host *shost = class_to_shost(class_dev); 2711 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2712 unsigned long lock_flags; 2713 int result = count; 2714 2715 if (!capable(CAP_SYS_ADMIN)) 2716 return -EACCES; 2717 2718 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2719 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) { 2720 ioa_cfg->ioa_is_dead = 0; 2721 ioa_cfg->reset_retries = 0; 2722 ioa_cfg->in_ioa_bringdown = 0; 2723 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2724 } 2725 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2726 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2727 2728 return result; 2729} 2730 2731static struct class_device_attribute ipr_ioa_state_attr = { 2732 .attr = { 2733 .name = "state", 2734 .mode = S_IRUGO | S_IWUSR, 2735 }, 2736 .show = ipr_show_adapter_state, 2737 .store = ipr_store_adapter_state 2738}; 2739 2740/** 2741 * ipr_store_reset_adapter - Reset the adapter 2742 * @class_dev: class_device struct 2743 * @buf: buffer 2744 * @count: buffer size 2745 * 2746 * This function will reset the adapter. 2747 * 2748 * Return value: 2749 * count on success / other on failure 2750 **/ 2751static ssize_t ipr_store_reset_adapter(struct class_device *class_dev, 2752 const char *buf, size_t count) 2753{ 2754 struct Scsi_Host *shost = class_to_shost(class_dev); 2755 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2756 unsigned long lock_flags; 2757 int result = count; 2758 2759 if (!capable(CAP_SYS_ADMIN)) 2760 return -EACCES; 2761 2762 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2763 if (!ioa_cfg->in_reset_reload) 2764 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2765 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2766 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2767 2768 return result; 2769} 2770 2771static struct class_device_attribute ipr_ioa_reset_attr = { 2772 .attr = { 2773 .name = "reset_host", 2774 .mode = S_IWUSR, 2775 }, 2776 .store = ipr_store_reset_adapter 2777}; 2778 2779/** 2780 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 2781 * @buf_len: buffer length 2782 * 2783 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 2784 * list to use for microcode download 2785 * 2786 * Return value: 2787 * pointer to sglist / NULL on failure 2788 **/ 2789static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 2790{ 2791 int sg_size, order, bsize_elem, num_elem, i, j; 2792 struct ipr_sglist *sglist; 2793 struct scatterlist *scatterlist; 2794 struct page *page; 2795 2796 /* Get the minimum size per scatter/gather element */ 2797 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 2798 2799 /* Get the actual size per element */ 2800 order = get_order(sg_size); 2801 2802 /* Determine the actual number of bytes per element */ 2803 bsize_elem = PAGE_SIZE * (1 << order); 2804 2805 /* Determine the actual number of sg entries needed */ 2806 if (buf_len % bsize_elem) 2807 num_elem = (buf_len / bsize_elem) + 1; 2808 else 2809 num_elem = buf_len / bsize_elem; 2810 2811 /* Allocate a scatter/gather list for the DMA */ 2812 sglist = kzalloc(sizeof(struct ipr_sglist) + 2813 (sizeof(struct scatterlist) * (num_elem - 1)), 2814 GFP_KERNEL); 2815 2816 if (sglist == NULL) { 2817 ipr_trace; 2818 return NULL; 2819 } 2820 2821 scatterlist = sglist->scatterlist; 2822 2823 sglist->order = order; 2824 sglist->num_sg = num_elem; 2825 2826 /* Allocate a bunch of sg elements */ 2827 for (i = 0; i < num_elem; i++) { 2828 page = alloc_pages(GFP_KERNEL, order); 2829 if (!page) { 2830 ipr_trace; 2831 2832 /* Free up what we already allocated */ 2833 for (j = i - 1; j >= 0; j--) 2834 __free_pages(scatterlist[j].page, order); 2835 kfree(sglist); 2836 return NULL; 2837 } 2838 2839 scatterlist[i].page = page; 2840 } 2841 2842 return sglist; 2843} 2844 2845/** 2846 * ipr_free_ucode_buffer - Frees a microcode download buffer 2847 * @p_dnld: scatter/gather list pointer 2848 * 2849 * Free a DMA'able ucode download buffer previously allocated with 2850 * ipr_alloc_ucode_buffer 2851 * 2852 * Return value: 2853 * nothing 2854 **/ 2855static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 2856{ 2857 int i; 2858 2859 for (i = 0; i < sglist->num_sg; i++) 2860 __free_pages(sglist->scatterlist[i].page, sglist->order); 2861 2862 kfree(sglist); 2863} 2864 2865/** 2866 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 2867 * @sglist: scatter/gather list pointer 2868 * @buffer: buffer pointer 2869 * @len: buffer length 2870 * 2871 * Copy a microcode image from a user buffer into a buffer allocated by 2872 * ipr_alloc_ucode_buffer 2873 * 2874 * Return value: 2875 * 0 on success / other on failure 2876 **/ 2877static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 2878 u8 *buffer, u32 len) 2879{ 2880 int bsize_elem, i, result = 0; 2881 struct scatterlist *scatterlist; 2882 void *kaddr; 2883 2884 /* Determine the actual number of bytes per element */ 2885 bsize_elem = PAGE_SIZE * (1 << sglist->order); 2886 2887 scatterlist = sglist->scatterlist; 2888 2889 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { 2890 kaddr = kmap(scatterlist[i].page); 2891 memcpy(kaddr, buffer, bsize_elem); 2892 kunmap(scatterlist[i].page); 2893 2894 scatterlist[i].length = bsize_elem; 2895 2896 if (result != 0) { 2897 ipr_trace; 2898 return result; 2899 } 2900 } 2901 2902 if (len % bsize_elem) { 2903 kaddr = kmap(scatterlist[i].page); 2904 memcpy(kaddr, buffer, len % bsize_elem); 2905 kunmap(scatterlist[i].page); 2906 2907 scatterlist[i].length = len % bsize_elem; 2908 } 2909 2910 sglist->buffer_len = len; 2911 return result; 2912} 2913 2914/** 2915 * ipr_build_ucode_ioadl - Build a microcode download IOADL 2916 * @ipr_cmd: ipr command struct 2917 * @sglist: scatter/gather list 2918 * 2919 * Builds a microcode download IOA data list (IOADL). 2920 * 2921 **/ 2922static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, 2923 struct ipr_sglist *sglist) 2924{ 2925 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 2926 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 2927 struct scatterlist *scatterlist = sglist->scatterlist; 2928 int i; 2929 2930 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 2931 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 2932 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len); 2933 ioarcb->write_ioadl_len = 2934 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 2935 2936 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 2937 ioadl[i].flags_and_data_len = 2938 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); 2939 ioadl[i].address = 2940 cpu_to_be32(sg_dma_address(&scatterlist[i])); 2941 } 2942 2943 ioadl[i-1].flags_and_data_len |= 2944 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 2945} 2946 2947/** 2948 * ipr_update_ioa_ucode - Update IOA's microcode 2949 * @ioa_cfg: ioa config struct 2950 * @sglist: scatter/gather list 2951 * 2952 * Initiate an adapter reset to update the IOA's microcode 2953 * 2954 * Return value: 2955 * 0 on success / -EIO on failure 2956 **/ 2957static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, 2958 struct ipr_sglist *sglist) 2959{ 2960 unsigned long lock_flags; 2961 2962 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2963 2964 if (ioa_cfg->ucode_sglist) { 2965 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2966 dev_err(&ioa_cfg->pdev->dev, 2967 "Microcode download already in progress\n"); 2968 return -EIO; 2969 } 2970 2971 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist, 2972 sglist->num_sg, DMA_TO_DEVICE); 2973 2974 if (!sglist->num_dma_sg) { 2975 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2976 dev_err(&ioa_cfg->pdev->dev, 2977 "Failed to map microcode download buffer!\n"); 2978 return -EIO; 2979 } 2980 2981 ioa_cfg->ucode_sglist = sglist; 2982 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2983 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2984 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2985 2986 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2987 ioa_cfg->ucode_sglist = NULL; 2988 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2989 return 0; 2990} 2991 2992/** 2993 * ipr_store_update_fw - Update the firmware on the adapter 2994 * @class_dev: class_device struct 2995 * @buf: buffer 2996 * @count: buffer size 2997 * 2998 * This function will update the firmware on the adapter. 2999 * 3000 * Return value: 3001 * count on success / other on failure 3002 **/ 3003static ssize_t ipr_store_update_fw(struct class_device *class_dev, 3004 const char *buf, size_t count) 3005{ 3006 struct Scsi_Host *shost = class_to_shost(class_dev); 3007 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3008 struct ipr_ucode_image_header *image_hdr; 3009 const struct firmware *fw_entry; 3010 struct ipr_sglist *sglist; 3011 char fname[100]; 3012 char *src; 3013 int len, result, dnld_size; 3014 3015 if (!capable(CAP_SYS_ADMIN)) 3016 return -EACCES; 3017 3018 len = snprintf(fname, 99, "%s", buf); 3019 fname[len-1] = '\0'; 3020 3021 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 3022 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 3023 return -EIO; 3024 } 3025 3026 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 3027 3028 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size || 3029 (ioa_cfg->vpd_cbs->page3_data.card_type && 3030 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) { 3031 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n"); 3032 release_firmware(fw_entry); 3033 return -EINVAL; 3034 } 3035 3036 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 3037 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 3038 sglist = ipr_alloc_ucode_buffer(dnld_size); 3039 3040 if (!sglist) { 3041 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 3042 release_firmware(fw_entry); 3043 return -ENOMEM; 3044 } 3045 3046 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 3047 3048 if (result) { 3049 dev_err(&ioa_cfg->pdev->dev, 3050 "Microcode buffer copy to DMA buffer failed\n"); 3051 goto out; 3052 } 3053 3054 result = ipr_update_ioa_ucode(ioa_cfg, sglist); 3055 3056 if (!result) 3057 result = count; 3058out: 3059 ipr_free_ucode_buffer(sglist); 3060 release_firmware(fw_entry); 3061 return result; 3062} 3063 3064static struct class_device_attribute ipr_update_fw_attr = { 3065 .attr = { 3066 .name = "update_fw", 3067 .mode = S_IWUSR, 3068 }, 3069 .store = ipr_store_update_fw 3070}; 3071 3072static struct class_device_attribute *ipr_ioa_attrs[] = { 3073 &ipr_fw_version_attr, 3074 &ipr_log_level_attr, 3075 &ipr_diagnostics_attr, 3076 &ipr_ioa_state_attr, 3077 &ipr_ioa_reset_attr, 3078 &ipr_update_fw_attr, 3079 &ipr_ioa_cache_attr, 3080 NULL, 3081}; 3082 3083#ifdef CONFIG_SCSI_IPR_DUMP 3084/** 3085 * ipr_read_dump - Dump the adapter 3086 * @kobj: kobject struct 3087 * @buf: buffer 3088 * @off: offset 3089 * @count: buffer size 3090 * 3091 * Return value: 3092 * number of bytes printed to buffer 3093 **/ 3094static ssize_t ipr_read_dump(struct kobject *kobj, char *buf, 3095 loff_t off, size_t count) 3096{ 3097 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 3098 struct Scsi_Host *shost = class_to_shost(cdev); 3099 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3100 struct ipr_dump *dump; 3101 unsigned long lock_flags = 0; 3102 char *src; 3103 int len; 3104 size_t rc = count; 3105 3106 if (!capable(CAP_SYS_ADMIN)) 3107 return -EACCES; 3108 3109 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3110 dump = ioa_cfg->dump; 3111 3112 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 3113 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3114 return 0; 3115 } 3116 kref_get(&dump->kref); 3117 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3118 3119 if (off > dump->driver_dump.hdr.len) { 3120 kref_put(&dump->kref, ipr_release_dump); 3121 return 0; 3122 } 3123 3124 if (off + count > dump->driver_dump.hdr.len) { 3125 count = dump->driver_dump.hdr.len - off; 3126 rc = count; 3127 } 3128 3129 if (count && off < sizeof(dump->driver_dump)) { 3130 if (off + count > sizeof(dump->driver_dump)) 3131 len = sizeof(dump->driver_dump) - off; 3132 else 3133 len = count; 3134 src = (u8 *)&dump->driver_dump + off; 3135 memcpy(buf, src, len); 3136 buf += len; 3137 off += len; 3138 count -= len; 3139 } 3140 3141 off -= sizeof(dump->driver_dump); 3142 3143 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) { 3144 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data)) 3145 len = offsetof(struct ipr_ioa_dump, ioa_data) - off; 3146 else 3147 len = count; 3148 src = (u8 *)&dump->ioa_dump + off; 3149 memcpy(buf, src, len); 3150 buf += len; 3151 off += len; 3152 count -= len; 3153 } 3154 3155 off -= offsetof(struct ipr_ioa_dump, ioa_data); 3156 3157 while (count) { 3158 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 3159 len = PAGE_ALIGN(off) - off; 3160 else 3161 len = count; 3162 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 3163 src += off & ~PAGE_MASK; 3164 memcpy(buf, src, len); 3165 buf += len; 3166 off += len; 3167 count -= len; 3168 } 3169 3170 kref_put(&dump->kref, ipr_release_dump); 3171 return rc; 3172} 3173 3174/** 3175 * ipr_alloc_dump - Prepare for adapter dump 3176 * @ioa_cfg: ioa config struct 3177 * 3178 * Return value: 3179 * 0 on success / other on failure 3180 **/ 3181static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 3182{ 3183 struct ipr_dump *dump; 3184 unsigned long lock_flags = 0; 3185 3186 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); 3187 3188 if (!dump) { 3189 ipr_err("Dump memory allocation failed\n"); 3190 return -ENOMEM; 3191 } 3192 3193 kref_init(&dump->kref); 3194 dump->ioa_cfg = ioa_cfg; 3195 3196 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3197 3198 if (INACTIVE != ioa_cfg->sdt_state) { 3199 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3200 kfree(dump); 3201 return 0; 3202 } 3203 3204 ioa_cfg->dump = dump; 3205 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 3206 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) { 3207 ioa_cfg->dump_taken = 1; 3208 schedule_work(&ioa_cfg->work_q); 3209 } 3210 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3211 3212 return 0; 3213} 3214 3215/** 3216 * ipr_free_dump - Free adapter dump memory 3217 * @ioa_cfg: ioa config struct 3218 * 3219 * Return value: 3220 * 0 on success / other on failure 3221 **/ 3222static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 3223{ 3224 struct ipr_dump *dump; 3225 unsigned long lock_flags = 0; 3226 3227 ENTER; 3228 3229 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3230 dump = ioa_cfg->dump; 3231 if (!dump) { 3232 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3233 return 0; 3234 } 3235 3236 ioa_cfg->dump = NULL; 3237 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3238 3239 kref_put(&dump->kref, ipr_release_dump); 3240 3241 LEAVE; 3242 return 0; 3243} 3244 3245/** 3246 * ipr_write_dump - Setup dump state of adapter 3247 * @kobj: kobject struct 3248 * @buf: buffer 3249 * @off: offset 3250 * @count: buffer size 3251 * 3252 * Return value: 3253 * number of bytes printed to buffer 3254 **/ 3255static ssize_t ipr_write_dump(struct kobject *kobj, char *buf, 3256 loff_t off, size_t count) 3257{ 3258 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 3259 struct Scsi_Host *shost = class_to_shost(cdev); 3260 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3261 int rc; 3262 3263 if (!capable(CAP_SYS_ADMIN)) 3264 return -EACCES; 3265 3266 if (buf[0] == '1') 3267 rc = ipr_alloc_dump(ioa_cfg); 3268 else if (buf[0] == '0') 3269 rc = ipr_free_dump(ioa_cfg); 3270 else 3271 return -EINVAL; 3272 3273 if (rc) 3274 return rc; 3275 else 3276 return count; 3277} 3278 3279static struct bin_attribute ipr_dump_attr = { 3280 .attr = { 3281 .name = "dump", 3282 .mode = S_IRUSR | S_IWUSR, 3283 }, 3284 .size = 0, 3285 .read = ipr_read_dump, 3286 .write = ipr_write_dump 3287}; 3288#else 3289static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 3290#endif 3291 3292/** 3293 * ipr_change_queue_depth - Change the device's queue depth 3294 * @sdev: scsi device struct 3295 * @qdepth: depth to set 3296 * 3297 * Return value: 3298 * actual depth set 3299 **/ 3300static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) 3301{ 3302 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3303 struct ipr_resource_entry *res; 3304 unsigned long lock_flags = 0; 3305 3306 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3307 res = (struct ipr_resource_entry *)sdev->hostdata; 3308 3309 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN) 3310 qdepth = IPR_MAX_CMD_PER_ATA_LUN; 3311 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3312 3313 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); 3314 return sdev->queue_depth; 3315} 3316 3317/** 3318 * ipr_change_queue_type - Change the device's queue type 3319 * @dsev: scsi device struct 3320 * @tag_type: type of tags to use 3321 * 3322 * Return value: 3323 * actual queue type set 3324 **/ 3325static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type) 3326{ 3327 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3328 struct ipr_resource_entry *res; 3329 unsigned long lock_flags = 0; 3330 3331 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3332 res = (struct ipr_resource_entry *)sdev->hostdata; 3333 3334 if (res) { 3335 if (ipr_is_gscsi(res) && sdev->tagged_supported) { 3336 /* 3337 * We don't bother quiescing the device here since the 3338 * adapter firmware does it for us. 3339 */ 3340 scsi_set_tag_type(sdev, tag_type); 3341 3342 if (tag_type) 3343 scsi_activate_tcq(sdev, sdev->queue_depth); 3344 else 3345 scsi_deactivate_tcq(sdev, sdev->queue_depth); 3346 } else 3347 tag_type = 0; 3348 } else 3349 tag_type = 0; 3350 3351 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3352 return tag_type; 3353} 3354 3355/** 3356 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 3357 * @dev: device struct 3358 * @buf: buffer 3359 * 3360 * Return value: 3361 * number of bytes printed to buffer 3362 **/ 3363static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) 3364{ 3365 struct scsi_device *sdev = to_scsi_device(dev); 3366 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3367 struct ipr_resource_entry *res; 3368 unsigned long lock_flags = 0; 3369 ssize_t len = -ENXIO; 3370 3371 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3372 res = (struct ipr_resource_entry *)sdev->hostdata; 3373 if (res) 3374 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle); 3375 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3376 return len; 3377} 3378 3379static struct device_attribute ipr_adapter_handle_attr = { 3380 .attr = { 3381 .name = "adapter_handle", 3382 .mode = S_IRUSR, 3383 }, 3384 .show = ipr_show_adapter_handle 3385}; 3386 3387static struct device_attribute *ipr_dev_attrs[] = { 3388 &ipr_adapter_handle_attr, 3389 NULL, 3390}; 3391 3392/** 3393 * ipr_biosparam - Return the HSC mapping 3394 * @sdev: scsi device struct 3395 * @block_device: block device pointer 3396 * @capacity: capacity of the device 3397 * @parm: Array containing returned HSC values. 3398 * 3399 * This function generates the HSC parms that fdisk uses. 3400 * We want to make sure we return something that places partitions 3401 * on 4k boundaries for best performance with the IOA. 3402 * 3403 * Return value: 3404 * 0 on success 3405 **/ 3406static int ipr_biosparam(struct scsi_device *sdev, 3407 struct block_device *block_device, 3408 sector_t capacity, int *parm) 3409{ 3410 int heads, sectors; 3411 sector_t cylinders; 3412 3413 heads = 128; 3414 sectors = 32; 3415 3416 cylinders = capacity; 3417 sector_div(cylinders, (128 * 32)); 3418 3419 /* return result */ 3420 parm[0] = heads; 3421 parm[1] = sectors; 3422 parm[2] = cylinders; 3423 3424 return 0; 3425} 3426 3427/** 3428 * ipr_find_starget - Find target based on bus/target. 3429 * @starget: scsi target struct 3430 * 3431 * Return value: 3432 * resource entry pointer if found / NULL if not found 3433 **/ 3434static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget) 3435{ 3436 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 3437 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 3438 struct ipr_resource_entry *res; 3439 3440 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3441 if ((res->cfgte.res_addr.bus == starget->channel) && 3442 (res->cfgte.res_addr.target == starget->id) && 3443 (res->cfgte.res_addr.lun == 0)) { 3444 return res; 3445 } 3446 } 3447 3448 return NULL; 3449} 3450 3451static struct ata_port_info sata_port_info; 3452 3453/** 3454 * ipr_target_alloc - Prepare for commands to a SCSI target 3455 * @starget: scsi target struct 3456 * 3457 * If the device is a SATA device, this function allocates an 3458 * ATA port with libata, else it does nothing. 3459 * 3460 * Return value: 3461 * 0 on success / non-0 on failure 3462 **/ 3463static int ipr_target_alloc(struct scsi_target *starget) 3464{ 3465 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 3466 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 3467 struct ipr_sata_port *sata_port; 3468 struct ata_port *ap; 3469 struct ipr_resource_entry *res; 3470 unsigned long lock_flags; 3471 3472 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3473 res = ipr_find_starget(starget); 3474 starget->hostdata = NULL; 3475 3476 if (res && ipr_is_gata(res)) { 3477 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3478 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL); 3479 if (!sata_port) 3480 return -ENOMEM; 3481 3482 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost); 3483 if (ap) { 3484 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3485 sata_port->ioa_cfg = ioa_cfg; 3486 sata_port->ap = ap; 3487 sata_port->res = res; 3488 3489 res->sata_port = sata_port; 3490 ap->private_data = sata_port; 3491 starget->hostdata = sata_port; 3492 } else { 3493 kfree(sata_port); 3494 return -ENOMEM; 3495 } 3496 } 3497 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3498 3499 return 0; 3500} 3501 3502/** 3503 * ipr_target_destroy - Destroy a SCSI target 3504 * @starget: scsi target struct 3505 * 3506 * If the device was a SATA device, this function frees the libata 3507 * ATA port, else it does nothing. 3508 * 3509 **/ 3510static void ipr_target_destroy(struct scsi_target *starget) 3511{ 3512 struct ipr_sata_port *sata_port = starget->hostdata; 3513 3514 if (sata_port) { 3515 starget->hostdata = NULL; 3516 ata_sas_port_destroy(sata_port->ap); 3517 kfree(sata_port); 3518 } 3519} 3520 3521/** 3522 * ipr_find_sdev - Find device based on bus/target/lun. 3523 * @sdev: scsi device struct 3524 * 3525 * Return value: 3526 * resource entry pointer if found / NULL if not found 3527 **/ 3528static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev) 3529{ 3530 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3531 struct ipr_resource_entry *res; 3532 3533 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3534 if ((res->cfgte.res_addr.bus == sdev->channel) && 3535 (res->cfgte.res_addr.target == sdev->id) && 3536 (res->cfgte.res_addr.lun == sdev->lun)) 3537 return res; 3538 } 3539 3540 return NULL; 3541} 3542 3543/** 3544 * ipr_slave_destroy - Unconfigure a SCSI device 3545 * @sdev: scsi device struct 3546 * 3547 * Return value: 3548 * nothing 3549 **/ 3550static void ipr_slave_destroy(struct scsi_device *sdev) 3551{ 3552 struct ipr_resource_entry *res; 3553 struct ipr_ioa_cfg *ioa_cfg; 3554 unsigned long lock_flags = 0; 3555 3556 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3557 3558 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3559 res = (struct ipr_resource_entry *) sdev->hostdata; 3560 if (res) { 3561 if (res->sata_port) 3562 ata_port_disable(res->sata_port->ap); 3563 sdev->hostdata = NULL; 3564 res->sdev = NULL; 3565 res->sata_port = NULL; 3566 } 3567 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3568} 3569 3570/** 3571 * ipr_slave_configure - Configure a SCSI device 3572 * @sdev: scsi device struct 3573 * 3574 * This function configures the specified scsi device. 3575 * 3576 * Return value: 3577 * 0 on success 3578 **/ 3579static int ipr_slave_configure(struct scsi_device *sdev) 3580{ 3581 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3582 struct ipr_resource_entry *res; 3583 unsigned long lock_flags = 0; 3584 3585 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3586 res = sdev->hostdata; 3587 if (res) { 3588 if (ipr_is_af_dasd_device(res)) 3589 sdev->type = TYPE_RAID; 3590 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { 3591 sdev->scsi_level = 4; 3592 sdev->no_uld_attach = 1; 3593 } 3594 if (ipr_is_vset_device(res)) { 3595 sdev->timeout = IPR_VSET_RW_TIMEOUT; 3596 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); 3597 } 3598 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)) 3599 sdev->allow_restart = 1; 3600 if (ipr_is_gata(res) && res->sata_port) { 3601 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN); 3602 ata_sas_slave_configure(sdev, res->sata_port->ap); 3603 } else { 3604 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); 3605 } 3606 } 3607 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3608 return 0; 3609} 3610 3611/** 3612 * ipr_ata_slave_alloc - Prepare for commands to a SATA device 3613 * @sdev: scsi device struct 3614 * 3615 * This function initializes an ATA port so that future commands 3616 * sent through queuecommand will work. 3617 * 3618 * Return value: 3619 * 0 on success 3620 **/ 3621static int ipr_ata_slave_alloc(struct scsi_device *sdev) 3622{ 3623 struct ipr_sata_port *sata_port = NULL; 3624 int rc = -ENXIO; 3625 3626 ENTER; 3627 if (sdev->sdev_target) 3628 sata_port = sdev->sdev_target->hostdata; 3629 if (sata_port) 3630 rc = ata_sas_port_init(sata_port->ap); 3631 if (rc) 3632 ipr_slave_destroy(sdev); 3633 3634 LEAVE; 3635 return rc; 3636} 3637 3638/** 3639 * ipr_slave_alloc - Prepare for commands to a device. 3640 * @sdev: scsi device struct 3641 * 3642 * This function saves a pointer to the resource entry 3643 * in the scsi device struct if the device exists. We 3644 * can then use this pointer in ipr_queuecommand when 3645 * handling new commands. 3646 * 3647 * Return value: 3648 * 0 on success / -ENXIO if device does not exist 3649 **/ 3650static int ipr_slave_alloc(struct scsi_device *sdev) 3651{ 3652 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3653 struct ipr_resource_entry *res; 3654 unsigned long lock_flags; 3655 int rc = -ENXIO; 3656 3657 sdev->hostdata = NULL; 3658 3659 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3660 3661 res = ipr_find_sdev(sdev); 3662 if (res) { 3663 res->sdev = sdev; 3664 res->add_to_ml = 0; 3665 res->in_erp = 0; 3666 sdev->hostdata = res; 3667 if (!ipr_is_naca_model(res)) 3668 res->needs_sync_complete = 1; 3669 rc = 0; 3670 if (ipr_is_gata(res)) { 3671 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3672 return ipr_ata_slave_alloc(sdev); 3673 } 3674 } 3675 3676 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3677 3678 return rc; 3679} 3680 3681/** 3682 * ipr_eh_host_reset - Reset the host adapter 3683 * @scsi_cmd: scsi command struct 3684 * 3685 * Return value: 3686 * SUCCESS / FAILED 3687 **/ 3688static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd) 3689{ 3690 struct ipr_ioa_cfg *ioa_cfg; 3691 int rc; 3692 3693 ENTER; 3694 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 3695 3696 dev_err(&ioa_cfg->pdev->dev, 3697 "Adapter being reset as a result of error recovery.\n"); 3698 3699 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 3700 ioa_cfg->sdt_state = GET_DUMP; 3701 3702 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV); 3703 3704 LEAVE; 3705 return rc; 3706} 3707 3708static int ipr_eh_host_reset(struct scsi_cmnd * cmd) 3709{ 3710 int rc; 3711 3712 spin_lock_irq(cmd->device->host->host_lock); 3713 rc = __ipr_eh_host_reset(cmd); 3714 spin_unlock_irq(cmd->device->host->host_lock); 3715 3716 return rc; 3717} 3718 3719/** 3720 * ipr_device_reset - Reset the device 3721 * @ioa_cfg: ioa config struct 3722 * @res: resource entry struct 3723 * 3724 * This function issues a device reset to the affected device. 3725 * If the device is a SCSI device, a LUN reset will be sent 3726 * to the device first. If that does not work, a target reset 3727 * will be sent. If the device is a SATA device, a PHY reset will 3728 * be sent. 3729 * 3730 * Return value: 3731 * 0 on success / non-zero on failure 3732 **/ 3733static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, 3734 struct ipr_resource_entry *res) 3735{ 3736 struct ipr_cmnd *ipr_cmd; 3737 struct ipr_ioarcb *ioarcb; 3738 struct ipr_cmd_pkt *cmd_pkt; 3739 struct ipr_ioarcb_ata_regs *regs; 3740 u32 ioasc; 3741 3742 ENTER; 3743 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3744 ioarcb = &ipr_cmd->ioarcb; 3745 cmd_pkt = &ioarcb->cmd_pkt; 3746 regs = &ioarcb->add_data.u.regs; 3747 3748 ioarcb->res_handle = res->cfgte.res_handle; 3749 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3750 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 3751 if (ipr_is_gata(res)) { 3752 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET; 3753 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags)); 3754 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 3755 } 3756 3757 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 3758 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3759 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3760 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) 3761 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata, 3762 sizeof(struct ipr_ioasa_gata)); 3763 3764 LEAVE; 3765 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0); 3766} 3767 3768/** 3769 * ipr_sata_reset - Reset the SATA port 3770 * @ap: SATA port to reset 3771 * @classes: class of the attached device 3772 * 3773 * This function issues a SATA phy reset to the affected ATA port. 3774 * 3775 * Return value: 3776 * 0 on success / non-zero on failure 3777 **/ 3778static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes) 3779{ 3780 struct ipr_sata_port *sata_port = ap->private_data; 3781 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 3782 struct ipr_resource_entry *res; 3783 unsigned long lock_flags = 0; 3784 int rc = -ENXIO; 3785 3786 ENTER; 3787 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3788 while(ioa_cfg->in_reset_reload) { 3789 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3790 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3791 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3792 } 3793 3794 res = sata_port->res; 3795 if (res) { 3796 rc = ipr_device_reset(ioa_cfg, res); 3797 switch(res->cfgte.proto) { 3798 case IPR_PROTO_SATA: 3799 case IPR_PROTO_SAS_STP: 3800 *classes = ATA_DEV_ATA; 3801 break; 3802 case IPR_PROTO_SATA_ATAPI: 3803 case IPR_PROTO_SAS_STP_ATAPI: 3804 *classes = ATA_DEV_ATAPI; 3805 break; 3806 default: 3807 *classes = ATA_DEV_UNKNOWN; 3808 break; 3809 }; 3810 } 3811 3812 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3813 LEAVE; 3814 return rc; 3815} 3816 3817/** 3818 * ipr_eh_dev_reset - Reset the device 3819 * @scsi_cmd: scsi command struct 3820 * 3821 * This function issues a device reset to the affected device. 3822 * A LUN reset will be sent to the device first. If that does 3823 * not work, a target reset will be sent. 3824 * 3825 * Return value: 3826 * SUCCESS / FAILED 3827 **/ 3828static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) 3829{ 3830 struct ipr_cmnd *ipr_cmd; 3831 struct ipr_ioa_cfg *ioa_cfg; 3832 struct ipr_resource_entry *res; 3833 struct ata_port *ap; 3834 int rc = 0; 3835 3836 ENTER; 3837 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 3838 res = scsi_cmd->device->hostdata; 3839 3840 if (!res) 3841 return FAILED; 3842 3843 /* 3844 * If we are currently going through reset/reload, return failed. This will force the 3845 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 3846 * reset to complete 3847 */ 3848 if (ioa_cfg->in_reset_reload) 3849 return FAILED; 3850 if (ioa_cfg->ioa_is_dead) 3851 return FAILED; 3852 3853 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3854 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) { 3855 if (ipr_cmd->scsi_cmd) 3856 ipr_cmd->done = ipr_scsi_eh_done; 3857 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) { 3858 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT; 3859 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED; 3860 } 3861 } 3862 } 3863 3864 res->resetting_device = 1; 3865 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); 3866 3867 if (ipr_is_gata(res) && res->sata_port) { 3868 ap = res->sata_port->ap; 3869 spin_unlock_irq(scsi_cmd->device->host->host_lock); 3870 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL); 3871 spin_lock_irq(scsi_cmd->device->host->host_lock); 3872 } else 3873 rc = ipr_device_reset(ioa_cfg, res); 3874 res->resetting_device = 0; 3875 3876 LEAVE; 3877 return (rc ? FAILED : SUCCESS); 3878} 3879 3880static int ipr_eh_dev_reset(struct scsi_cmnd * cmd) 3881{ 3882 int rc; 3883 3884 spin_lock_irq(cmd->device->host->host_lock); 3885 rc = __ipr_eh_dev_reset(cmd); 3886 spin_unlock_irq(cmd->device->host->host_lock); 3887 3888 return rc; 3889} 3890 3891/** 3892 * ipr_bus_reset_done - Op done function for bus reset. 3893 * @ipr_cmd: ipr command struct 3894 * 3895 * This function is the op done function for a bus reset 3896 * 3897 * Return value: 3898 * none 3899 **/ 3900static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 3901{ 3902 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3903 struct ipr_resource_entry *res; 3904 3905 ENTER; 3906 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3907 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle, 3908 sizeof(res->cfgte.res_handle))) { 3909 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus); 3910 break; 3911 } 3912 } 3913 3914 /* 3915 * If abort has not completed, indicate the reset has, else call the 3916 * abort's done function to wake the sleeping eh thread 3917 */ 3918 if (ipr_cmd->sibling->sibling) 3919 ipr_cmd->sibling->sibling = NULL; 3920 else 3921 ipr_cmd->sibling->done(ipr_cmd->sibling); 3922 3923 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3924 LEAVE; 3925} 3926 3927/** 3928 * ipr_abort_timeout - An abort task has timed out 3929 * @ipr_cmd: ipr command struct 3930 * 3931 * This function handles when an abort task times out. If this 3932 * happens we issue a bus reset since we have resources tied 3933 * up that must be freed before returning to the midlayer. 3934 * 3935 * Return value: 3936 * none 3937 **/ 3938static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 3939{ 3940 struct ipr_cmnd *reset_cmd; 3941 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3942 struct ipr_cmd_pkt *cmd_pkt; 3943 unsigned long lock_flags = 0; 3944 3945 ENTER; 3946 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3947 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 3948 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3949 return; 3950 } 3951 3952 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n"); 3953 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3954 ipr_cmd->sibling = reset_cmd; 3955 reset_cmd->sibling = ipr_cmd; 3956 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 3957 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 3958 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3959 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 3960 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 3961 3962 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 3963 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3964 LEAVE; 3965} 3966 3967/** 3968 * ipr_cancel_op - Cancel specified op 3969 * @scsi_cmd: scsi command struct 3970 * 3971 * This function cancels specified op. 3972 * 3973 * Return value: 3974 * SUCCESS / FAILED 3975 **/ 3976static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) 3977{ 3978 struct ipr_cmnd *ipr_cmd; 3979 struct ipr_ioa_cfg *ioa_cfg; 3980 struct ipr_resource_entry *res; 3981 struct ipr_cmd_pkt *cmd_pkt; 3982 u32 ioasc; 3983 int op_found = 0; 3984 3985 ENTER; 3986 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 3987 res = scsi_cmd->device->hostdata; 3988 3989 /* If we are currently going through reset/reload, return failed. 3990 * This will force the mid-layer to call ipr_eh_host_reset, 3991 * which will then go to sleep and wait for the reset to complete 3992 */ 3993 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) 3994 return FAILED; 3995 if (!res || !ipr_is_gscsi(res)) 3996 return FAILED; 3997 3998 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3999 if (ipr_cmd->scsi_cmd == scsi_cmd) { 4000 ipr_cmd->done = ipr_scsi_eh_done; 4001 op_found = 1; 4002 break; 4003 } 4004 } 4005 4006 if (!op_found) 4007 return SUCCESS; 4008 4009 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4010 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 4011 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4012 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4013 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4014 ipr_cmd->u.sdev = scsi_cmd->device; 4015 4016 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n", 4017 scsi_cmd->cmnd[0]); 4018 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 4019 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4020 4021 /* 4022 * If the abort task timed out and we sent a bus reset, we will get 4023 * one the following responses to the abort 4024 */ 4025 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 4026 ioasc = 0; 4027 ipr_trace; 4028 } 4029 4030 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4031 if (!ipr_is_naca_model(res)) 4032 res->needs_sync_complete = 1; 4033 4034 LEAVE; 4035 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); 4036} 4037 4038/** 4039 * ipr_eh_abort - Abort a single op 4040 * @scsi_cmd: scsi command struct 4041 * 4042 * Return value: 4043 * SUCCESS / FAILED 4044 **/ 4045static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) 4046{ 4047 unsigned long flags; 4048 int rc; 4049 4050 ENTER; 4051 4052 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 4053 rc = ipr_cancel_op(scsi_cmd); 4054 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 4055 4056 LEAVE; 4057 return rc; 4058} 4059 4060/** 4061 * ipr_handle_other_interrupt - Handle "other" interrupts 4062 * @ioa_cfg: ioa config struct 4063 * @int_reg: interrupt register 4064 * 4065 * Return value: 4066 * IRQ_NONE / IRQ_HANDLED 4067 **/ 4068static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 4069 volatile u32 int_reg) 4070{ 4071 irqreturn_t rc = IRQ_HANDLED; 4072 4073 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 4074 /* Mask the interrupt */ 4075 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 4076 4077 /* Clear the interrupt */ 4078 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); 4079 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 4080 4081 list_del(&ioa_cfg->reset_cmd->queue); 4082 del_timer(&ioa_cfg->reset_cmd->timer); 4083 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 4084 } else { 4085 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 4086 ioa_cfg->ioa_unit_checked = 1; 4087 else 4088 dev_err(&ioa_cfg->pdev->dev, 4089 "Permanent IOA failure. 0x%08X\n", int_reg); 4090 4091 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4092 ioa_cfg->sdt_state = GET_DUMP; 4093 4094 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 4095 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4096 } 4097 4098 return rc; 4099} 4100 4101/** 4102 * ipr_isr - Interrupt service routine 4103 * @irq: irq number 4104 * @devp: pointer to ioa config struct 4105 * 4106 * Return value: 4107 * IRQ_NONE / IRQ_HANDLED 4108 **/ 4109static irqreturn_t ipr_isr(int irq, void *devp) 4110{ 4111 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 4112 unsigned long lock_flags = 0; 4113 volatile u32 int_reg, int_mask_reg; 4114 u32 ioasc; 4115 u16 cmd_index; 4116 struct ipr_cmnd *ipr_cmd; 4117 irqreturn_t rc = IRQ_NONE; 4118 4119 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4120 4121 /* If interrupts are disabled, ignore the interrupt */ 4122 if (!ioa_cfg->allow_interrupts) { 4123 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4124 return IRQ_NONE; 4125 } 4126 4127 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 4128 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 4129 4130 /* If an interrupt on the adapter did not occur, ignore it */ 4131 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) { 4132 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4133 return IRQ_NONE; 4134 } 4135 4136 while (1) { 4137 ipr_cmd = NULL; 4138 4139 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 4140 ioa_cfg->toggle_bit) { 4141 4142 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & 4143 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 4144 4145 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { 4146 ioa_cfg->errors_logged++; 4147 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n"); 4148 4149 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4150 ioa_cfg->sdt_state = GET_DUMP; 4151 4152 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4153 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4154 return IRQ_HANDLED; 4155 } 4156 4157 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 4158 4159 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4160 4161 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 4162 4163 list_del(&ipr_cmd->queue); 4164 del_timer(&ipr_cmd->timer); 4165 ipr_cmd->done(ipr_cmd); 4166 4167 rc = IRQ_HANDLED; 4168 4169 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { 4170 ioa_cfg->hrrq_curr++; 4171 } else { 4172 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 4173 ioa_cfg->toggle_bit ^= 1u; 4174 } 4175 } 4176 4177 if (ipr_cmd != NULL) { 4178 /* Clear the PCI interrupt */ 4179 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg); 4180 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 4181 } else 4182 break; 4183 } 4184 4185 if (unlikely(rc == IRQ_NONE)) 4186 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 4187 4188 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4189 return rc; 4190} 4191 4192/** 4193 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 4194 * @ioa_cfg: ioa config struct 4195 * @ipr_cmd: ipr command struct 4196 * 4197 * Return value: 4198 * 0 on success / -1 on failure 4199 **/ 4200static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 4201 struct ipr_cmnd *ipr_cmd) 4202{ 4203 int i; 4204 struct scatterlist *sglist; 4205 u32 length; 4206 u32 ioadl_flags = 0; 4207 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4208 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4209 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4210 4211 length = scsi_cmd->request_bufflen; 4212 4213 if (length == 0) 4214 return 0; 4215 4216 if (scsi_cmd->use_sg) { 4217 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, 4218 scsi_cmd->request_buffer, 4219 scsi_cmd->use_sg, 4220 scsi_cmd->sc_data_direction); 4221 4222 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 4223 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 4224 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4225 ioarcb->write_data_transfer_length = cpu_to_be32(length); 4226 ioarcb->write_ioadl_len = 4227 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 4228 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 4229 ioadl_flags = IPR_IOADL_FLAGS_READ; 4230 ioarcb->read_data_transfer_length = cpu_to_be32(length); 4231 ioarcb->read_ioadl_len = 4232 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 4233 } 4234 4235 sglist = scsi_cmd->request_buffer; 4236 4237 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 4238 ioadl[i].flags_and_data_len = 4239 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i])); 4240 ioadl[i].address = 4241 cpu_to_be32(sg_dma_address(&sglist[i])); 4242 } 4243 4244 if (likely(ipr_cmd->dma_use_sg)) { 4245 ioadl[i-1].flags_and_data_len |= 4246 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 4247 return 0; 4248 } else 4249 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 4250 } else { 4251 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 4252 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 4253 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4254 ioarcb->write_data_transfer_length = cpu_to_be32(length); 4255 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4256 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 4257 ioadl_flags = IPR_IOADL_FLAGS_READ; 4258 ioarcb->read_data_transfer_length = cpu_to_be32(length); 4259 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4260 } 4261 4262 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev, 4263 scsi_cmd->request_buffer, length, 4264 scsi_cmd->sc_data_direction); 4265 4266 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) { 4267 ipr_cmd->dma_use_sg = 1; 4268 ioadl[0].flags_and_data_len = 4269 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST); 4270 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle); 4271 return 0; 4272 } else 4273 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n"); 4274 } 4275 4276 return -1; 4277} 4278 4279/** 4280 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes 4281 * @scsi_cmd: scsi command struct 4282 * 4283 * Return value: 4284 * task attributes 4285 **/ 4286static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) 4287{ 4288 u8 tag[2]; 4289 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; 4290 4291 if (scsi_populate_tag_msg(scsi_cmd, tag)) { 4292 switch (tag[0]) { 4293 case MSG_SIMPLE_TAG: 4294 rc = IPR_FLAGS_LO_SIMPLE_TASK; 4295 break; 4296 case MSG_HEAD_TAG: 4297 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; 4298 break; 4299 case MSG_ORDERED_TAG: 4300 rc = IPR_FLAGS_LO_ORDERED_TASK; 4301 break; 4302 }; 4303 } 4304 4305 return rc; 4306} 4307 4308/** 4309 * ipr_erp_done - Process completion of ERP for a device 4310 * @ipr_cmd: ipr command struct 4311 * 4312 * This function copies the sense buffer into the scsi_cmd 4313 * struct and pushes the scsi_done function. 4314 * 4315 * Return value: 4316 * nothing 4317 **/ 4318static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 4319{ 4320 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4321 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4322 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4323 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4324 4325 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 4326 scsi_cmd->result |= (DID_ERROR << 16); 4327 scmd_printk(KERN_ERR, scsi_cmd, 4328 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 4329 } else { 4330 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 4331 SCSI_SENSE_BUFFERSIZE); 4332 } 4333 4334 if (res) { 4335 if (!ipr_is_naca_model(res)) 4336 res->needs_sync_complete = 1; 4337 res->in_erp = 0; 4338 } 4339 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 4340 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4341 scsi_cmd->scsi_done(scsi_cmd); 4342} 4343 4344/** 4345 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 4346 * @ipr_cmd: ipr command struct 4347 * 4348 * Return value: 4349 * none 4350 **/ 4351static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 4352{ 4353 struct ipr_ioarcb *ioarcb; 4354 struct ipr_ioasa *ioasa; 4355 4356 ioarcb = &ipr_cmd->ioarcb; 4357 ioasa = &ipr_cmd->ioasa; 4358 4359 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 4360 ioarcb->write_data_transfer_length = 0; 4361 ioarcb->read_data_transfer_length = 0; 4362 ioarcb->write_ioadl_len = 0; 4363 ioarcb->read_ioadl_len = 0; 4364 ioasa->ioasc = 0; 4365 ioasa->residual_data_len = 0; 4366} 4367 4368/** 4369 * ipr_erp_request_sense - Send request sense to a device 4370 * @ipr_cmd: ipr command struct 4371 * 4372 * This function sends a request sense to a device as a result 4373 * of a check condition. 4374 * 4375 * Return value: 4376 * nothing 4377 **/ 4378static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 4379{ 4380 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4381 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4382 4383 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 4384 ipr_erp_done(ipr_cmd); 4385 return; 4386 } 4387 4388 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 4389 4390 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 4391 cmd_pkt->cdb[0] = REQUEST_SENSE; 4392 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 4393 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 4394 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 4395 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 4396 4397 ipr_cmd->ioadl[0].flags_and_data_len = 4398 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE); 4399 ipr_cmd->ioadl[0].address = 4400 cpu_to_be32(ipr_cmd->sense_buffer_dma); 4401 4402 ipr_cmd->ioarcb.read_ioadl_len = 4403 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4404 ipr_cmd->ioarcb.read_data_transfer_length = 4405 cpu_to_be32(SCSI_SENSE_BUFFERSIZE); 4406 4407 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 4408 IPR_REQUEST_SENSE_TIMEOUT * 2); 4409} 4410 4411/** 4412 * ipr_erp_cancel_all - Send cancel all to a device 4413 * @ipr_cmd: ipr command struct 4414 * 4415 * This function sends a cancel all to a device to clear the 4416 * queue. If we are running TCQ on the device, QERR is set to 1, 4417 * which means all outstanding ops have been dropped on the floor. 4418 * Cancel all will return them to us. 4419 * 4420 * Return value: 4421 * nothing 4422 **/ 4423static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 4424{ 4425 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4426 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4427 struct ipr_cmd_pkt *cmd_pkt; 4428 4429 res->in_erp = 1; 4430 4431 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 4432 4433 if (!scsi_get_tag_type(scsi_cmd->device)) { 4434 ipr_erp_request_sense(ipr_cmd); 4435 return; 4436 } 4437 4438 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4439 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4440 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4441 4442 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 4443 IPR_CANCEL_ALL_TIMEOUT); 4444} 4445 4446/** 4447 * ipr_dump_ioasa - Dump contents of IOASA 4448 * @ioa_cfg: ioa config struct 4449 * @ipr_cmd: ipr command struct 4450 * @res: resource entry struct 4451 * 4452 * This function is invoked by the interrupt handler when ops 4453 * fail. It will log the IOASA if appropriate. Only called 4454 * for GPDD ops. 4455 * 4456 * Return value: 4457 * none 4458 **/ 4459static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 4460 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res) 4461{ 4462 int i; 4463 u16 data_len; 4464 u32 ioasc; 4465 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4466 __be32 *ioasa_data = (__be32 *)ioasa; 4467 int error_index; 4468 4469 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK; 4470 4471 if (0 == ioasc) 4472 return; 4473 4474 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 4475 return; 4476 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_error_table[error_index].log_ioasa == 0) 4485 return; 4486 } 4487 4488 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error); 4489 4490 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len)) 4491 data_len = sizeof(struct ipr_ioasa); 4492 else 4493 data_len = be16_to_cpu(ioasa->ret_stat_len); 4494 4495 ipr_err("IOASA Dump:\n"); 4496 4497 for (i = 0; i < data_len / 4; i += 4) { 4498 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 4499 be32_to_cpu(ioasa_data[i]), 4500 be32_to_cpu(ioasa_data[i+1]), 4501 be32_to_cpu(ioasa_data[i+2]), 4502 be32_to_cpu(ioasa_data[i+3])); 4503 } 4504} 4505 4506/** 4507 * ipr_gen_sense - Generate SCSI sense data from an IOASA 4508 * @ioasa: IOASA 4509 * @sense_buf: sense data buffer 4510 * 4511 * Return value: 4512 * none 4513 **/ 4514static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 4515{ 4516 u32 failing_lba; 4517 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 4518 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 4519 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4520 u32 ioasc = be32_to_cpu(ioasa->ioasc); 4521 4522 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 4523 4524 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 4525 return; 4526 4527 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 4528 4529 if (ipr_is_vset_device(res) && 4530 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 4531 ioasa->u.vset.failing_lba_hi != 0) { 4532 sense_buf[0] = 0x72; 4533 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 4534 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 4535 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 4536 4537 sense_buf[7] = 12; 4538 sense_buf[8] = 0; 4539 sense_buf[9] = 0x0A; 4540 sense_buf[10] = 0x80; 4541 4542 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 4543 4544 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 4545 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 4546 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 4547 sense_buf[15] = failing_lba & 0x000000ff; 4548 4549 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 4550 4551 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 4552 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 4553 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 4554 sense_buf[19] = failing_lba & 0x000000ff; 4555 } else { 4556 sense_buf[0] = 0x70; 4557 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 4558 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 4559 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 4560 4561 /* Illegal request */ 4562 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 4563 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 4564 sense_buf[7] = 10; /* additional length */ 4565 4566 /* IOARCB was in error */ 4567 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 4568 sense_buf[15] = 0xC0; 4569 else /* Parameter data was invalid */ 4570 sense_buf[15] = 0x80; 4571 4572 sense_buf[16] = 4573 ((IPR_FIELD_POINTER_MASK & 4574 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff; 4575 sense_buf[17] = 4576 (IPR_FIELD_POINTER_MASK & 4577 be32_to_cpu(ioasa->ioasc_specific)) & 0xff; 4578 } else { 4579 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 4580 if (ipr_is_vset_device(res)) 4581 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 4582 else 4583 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 4584 4585 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 4586 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 4587 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 4588 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 4589 sense_buf[6] = failing_lba & 0x000000ff; 4590 } 4591 4592 sense_buf[7] = 6; /* additional length */ 4593 } 4594 } 4595} 4596 4597/** 4598 * ipr_get_autosense - Copy autosense data to sense buffer 4599 * @ipr_cmd: ipr command struct 4600 * 4601 * This function copies the autosense buffer to the buffer 4602 * in the scsi_cmd, if there is autosense available. 4603 * 4604 * Return value: 4605 * 1 if autosense was available / 0 if not 4606 **/ 4607static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) 4608{ 4609 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4610 4611 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0) 4612 return 0; 4613 4614 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, 4615 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), 4616 SCSI_SENSE_BUFFERSIZE)); 4617 return 1; 4618} 4619 4620/** 4621 * ipr_erp_start - Process an error response for a SCSI op 4622 * @ioa_cfg: ioa config struct 4623 * @ipr_cmd: ipr command struct 4624 * 4625 * This function determines whether or not to initiate ERP 4626 * on the affected device. 4627 * 4628 * Return value: 4629 * nothing 4630 **/ 4631static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 4632 struct ipr_cmnd *ipr_cmd) 4633{ 4634 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4635 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4636 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4637 4638 if (!res) { 4639 ipr_scsi_eh_done(ipr_cmd); 4640 return; 4641 } 4642 4643 if (ipr_is_gscsi(res)) 4644 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 4645 else 4646 ipr_gen_sense(ipr_cmd); 4647 4648 switch (ioasc & IPR_IOASC_IOASC_MASK) { 4649 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 4650 if (ipr_is_naca_model(res)) 4651 scsi_cmd->result |= (DID_ABORT << 16); 4652 else 4653 scsi_cmd->result |= (DID_IMM_RETRY << 16); 4654 break; 4655 case IPR_IOASC_IR_RESOURCE_HANDLE: 4656 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: 4657 scsi_cmd->result |= (DID_NO_CONNECT << 16); 4658 break; 4659 case IPR_IOASC_HW_SEL_TIMEOUT: 4660 scsi_cmd->result |= (DID_NO_CONNECT << 16); 4661 if (!ipr_is_naca_model(res)) 4662 res->needs_sync_complete = 1; 4663 break; 4664 case IPR_IOASC_SYNC_REQUIRED: 4665 if (!res->in_erp) 4666 res->needs_sync_complete = 1; 4667 scsi_cmd->result |= (DID_IMM_RETRY << 16); 4668 break; 4669 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 4670 case IPR_IOASA_IR_DUAL_IOA_DISABLED: 4671 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 4672 break; 4673 case IPR_IOASC_BUS_WAS_RESET: 4674 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 4675 /* 4676 * Report the bus reset and ask for a retry. The device 4677 * will give CC/UA the next command. 4678 */ 4679 if (!res->resetting_device) 4680 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 4681 scsi_cmd->result |= (DID_ERROR << 16); 4682 if (!ipr_is_naca_model(res)) 4683 res->needs_sync_complete = 1; 4684 break; 4685 case IPR_IOASC_HW_DEV_BUS_STATUS: 4686 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 4687 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 4688 if (!ipr_get_autosense(ipr_cmd)) { 4689 if (!ipr_is_naca_model(res)) { 4690 ipr_erp_cancel_all(ipr_cmd); 4691 return; 4692 } 4693 } 4694 } 4695 if (!ipr_is_naca_model(res)) 4696 res->needs_sync_complete = 1; 4697 break; 4698 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 4699 break; 4700 default: 4701 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 4702 scsi_cmd->result |= (DID_ERROR << 16); 4703 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) 4704 res->needs_sync_complete = 1; 4705 break; 4706 } 4707 4708 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 4709 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4710 scsi_cmd->scsi_done(scsi_cmd); 4711} 4712 4713/** 4714 * ipr_scsi_done - mid-layer done function 4715 * @ipr_cmd: ipr command struct 4716 * 4717 * This function is invoked by the interrupt handler for 4718 * ops generated by the SCSI mid-layer 4719 * 4720 * Return value: 4721 * none 4722 **/ 4723static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 4724{ 4725 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4726 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4727 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4728 4729 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len); 4730 4731 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 4732 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 4733 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4734 scsi_cmd->scsi_done(scsi_cmd); 4735 } else 4736 ipr_erp_start(ioa_cfg, ipr_cmd); 4737} 4738 4739/** 4740 * ipr_queuecommand - Queue a mid-layer request 4741 * @scsi_cmd: scsi command struct 4742 * @done: done function 4743 * 4744 * This function queues a request generated by the mid-layer. 4745 * 4746 * Return value: 4747 * 0 on success 4748 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 4749 * SCSI_MLQUEUE_HOST_BUSY if host is busy 4750 **/ 4751static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, 4752 void (*done) (struct scsi_cmnd *)) 4753{ 4754 struct ipr_ioa_cfg *ioa_cfg; 4755 struct ipr_resource_entry *res; 4756 struct ipr_ioarcb *ioarcb; 4757 struct ipr_cmnd *ipr_cmd; 4758 int rc = 0; 4759 4760 scsi_cmd->scsi_done = done; 4761 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 4762 res = scsi_cmd->device->hostdata; 4763 scsi_cmd->result = (DID_OK << 16); 4764 4765 /* 4766 * We are currently blocking all devices due to a host reset 4767 * We have told the host to stop giving us new requests, but 4768 * ERP ops don't count. FIXME 4769 */ 4770 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) 4771 return SCSI_MLQUEUE_HOST_BUSY; 4772 4773 /* 4774 * FIXME - Create scsi_set_host_offline interface 4775 * and the ioa_is_dead check can be removed 4776 */ 4777 if (unlikely(ioa_cfg->ioa_is_dead || !res)) { 4778 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 4779 scsi_cmd->result = (DID_NO_CONNECT << 16); 4780 scsi_cmd->scsi_done(scsi_cmd); 4781 return 0; 4782 } 4783 4784 if (ipr_is_gata(res) && res->sata_port) 4785 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap); 4786 4787 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4788 ioarcb = &ipr_cmd->ioarcb; 4789 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 4790 4791 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 4792 ipr_cmd->scsi_cmd = scsi_cmd; 4793 ioarcb->res_handle = res->cfgte.res_handle; 4794 ipr_cmd->done = ipr_scsi_done; 4795 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 4796 4797 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 4798 if (scsi_cmd->underflow == 0) 4799 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 4800 4801 if (res->needs_sync_complete) { 4802 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 4803 res->needs_sync_complete = 0; 4804 } 4805 4806 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 4807 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 4808 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 4809 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); 4810 } 4811 4812 if (scsi_cmd->cmnd[0] >= 0xC0 && 4813 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) 4814 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4815 4816 if (likely(rc == 0)) 4817 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 4818 4819 if (likely(rc == 0)) { 4820 mb(); 4821 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 4822 ioa_cfg->regs.ioarrin_reg); 4823 } else { 4824 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4825 return SCSI_MLQUEUE_HOST_BUSY; 4826 } 4827 4828 return 0; 4829} 4830 4831/** 4832 * ipr_ioctl - IOCTL handler 4833 * @sdev: scsi device struct 4834 * @cmd: IOCTL cmd 4835 * @arg: IOCTL arg 4836 * 4837 * Return value: 4838 * 0 on success / other on failure 4839 **/ 4840int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) 4841{ 4842 struct ipr_resource_entry *res; 4843 4844 res = (struct ipr_resource_entry *)sdev->hostdata; 4845 if (res && ipr_is_gata(res)) 4846 return ata_scsi_ioctl(sdev, cmd, arg); 4847 4848 return -EINVAL; 4849} 4850 4851/** 4852 * ipr_info - Get information about the card/driver 4853 * @scsi_host: scsi host struct 4854 * 4855 * Return value: 4856 * pointer to buffer with description string 4857 **/ 4858static const char * ipr_ioa_info(struct Scsi_Host *host) 4859{ 4860 static char buffer[512]; 4861 struct ipr_ioa_cfg *ioa_cfg; 4862 unsigned long lock_flags = 0; 4863 4864 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 4865 4866 spin_lock_irqsave(host->host_lock, lock_flags); 4867 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 4868 spin_unlock_irqrestore(host->host_lock, lock_flags); 4869 4870 return buffer; 4871} 4872 4873static struct scsi_host_template driver_template = { 4874 .module = THIS_MODULE, 4875 .name = "IPR", 4876 .info = ipr_ioa_info, 4877 .ioctl = ipr_ioctl, 4878 .queuecommand = ipr_queuecommand, 4879 .eh_abort_handler = ipr_eh_abort, 4880 .eh_device_reset_handler = ipr_eh_dev_reset, 4881 .eh_host_reset_handler = ipr_eh_host_reset, 4882 .slave_alloc = ipr_slave_alloc, 4883 .slave_configure = ipr_slave_configure, 4884 .slave_destroy = ipr_slave_destroy, 4885 .target_alloc = ipr_target_alloc, 4886 .target_destroy = ipr_target_destroy, 4887 .change_queue_depth = ipr_change_queue_depth, 4888 .change_queue_type = ipr_change_queue_type, 4889 .bios_param = ipr_biosparam, 4890 .can_queue = IPR_MAX_COMMANDS, 4891 .this_id = -1, 4892 .sg_tablesize = IPR_MAX_SGLIST, 4893 .max_sectors = IPR_IOA_MAX_SECTORS, 4894 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 4895 .use_clustering = ENABLE_CLUSTERING, 4896 .shost_attrs = ipr_ioa_attrs, 4897 .sdev_attrs = ipr_dev_attrs, 4898 .proc_name = IPR_NAME 4899}; 4900 4901/** 4902 * ipr_ata_phy_reset - libata phy_reset handler 4903 * @ap: ata port to reset 4904 * 4905 **/ 4906static void ipr_ata_phy_reset(struct ata_port *ap) 4907{ 4908 unsigned long flags; 4909 struct ipr_sata_port *sata_port = ap->private_data; 4910 struct ipr_resource_entry *res = sata_port->res; 4911 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 4912 int rc; 4913 4914 ENTER; 4915 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4916 while(ioa_cfg->in_reset_reload) { 4917 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4918 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4919 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4920 } 4921 4922 if (!ioa_cfg->allow_cmds) 4923 goto out_unlock; 4924 4925 rc = ipr_device_reset(ioa_cfg, res); 4926 4927 if (rc) { 4928 ap->ops->port_disable(ap); 4929 goto out_unlock; 4930 } 4931 4932 switch(res->cfgte.proto) { 4933 case IPR_PROTO_SATA: 4934 case IPR_PROTO_SAS_STP: 4935 ap->device[0].class = ATA_DEV_ATA; 4936 break; 4937 case IPR_PROTO_SATA_ATAPI: 4938 case IPR_PROTO_SAS_STP_ATAPI: 4939 ap->device[0].class = ATA_DEV_ATAPI; 4940 break; 4941 default: 4942 ap->device[0].class = ATA_DEV_UNKNOWN; 4943 ap->ops->port_disable(ap); 4944 break; 4945 }; 4946 4947out_unlock: 4948 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4949 LEAVE; 4950} 4951 4952/** 4953 * ipr_ata_post_internal - Cleanup after an internal command 4954 * @qc: ATA queued command 4955 * 4956 * Return value: 4957 * none 4958 **/ 4959static void ipr_ata_post_internal(struct ata_queued_cmd *qc) 4960{ 4961 struct ipr_sata_port *sata_port = qc->ap->private_data; 4962 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 4963 struct ipr_cmnd *ipr_cmd; 4964 unsigned long flags; 4965 4966 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4967 while(ioa_cfg->in_reset_reload) { 4968 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4969 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4970 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4971 } 4972 4973 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4974 if (ipr_cmd->qc == qc) { 4975 ipr_device_reset(ioa_cfg, sata_port->res); 4976 break; 4977 } 4978 } 4979 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4980} 4981 4982/** 4983 * ipr_tf_read - Read the current ATA taskfile for the ATA port 4984 * @ap: ATA port 4985 * @tf: destination ATA taskfile 4986 * 4987 * Return value: 4988 * none 4989 **/ 4990static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf) 4991{ 4992 struct ipr_sata_port *sata_port = ap->private_data; 4993 struct ipr_ioasa_gata *g = &sata_port->ioasa; 4994 4995 tf->feature = g->error; 4996 tf->nsect = g->nsect; 4997 tf->lbal = g->lbal; 4998 tf->lbam = g->lbam; 4999 tf->lbah = g->lbah; 5000 tf->device = g->device; 5001 tf->command = g->status; 5002 tf->hob_nsect = g->hob_nsect; 5003 tf->hob_lbal = g->hob_lbal; 5004 tf->hob_lbam = g->hob_lbam; 5005 tf->hob_lbah = g->hob_lbah; 5006 tf->ctl = g->alt_status; 5007} 5008 5009/** 5010 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure 5011 * @regs: destination 5012 * @tf: source ATA taskfile 5013 * 5014 * Return value: 5015 * none 5016 **/ 5017static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs, 5018 struct ata_taskfile *tf) 5019{ 5020 regs->feature = tf->feature; 5021 regs->nsect = tf->nsect; 5022 regs->lbal = tf->lbal; 5023 regs->lbam = tf->lbam; 5024 regs->lbah = tf->lbah; 5025 regs->device = tf->device; 5026 regs->command = tf->command; 5027 regs->hob_feature = tf->hob_feature; 5028 regs->hob_nsect = tf->hob_nsect; 5029 regs->hob_lbal = tf->hob_lbal; 5030 regs->hob_lbam = tf->hob_lbam; 5031 regs->hob_lbah = tf->hob_lbah; 5032 regs->ctl = tf->ctl; 5033} 5034 5035/** 5036 * ipr_sata_done - done function for SATA commands 5037 * @ipr_cmd: ipr command struct 5038 * 5039 * This function is invoked by the interrupt handler for 5040 * ops generated by the SCSI mid-layer to SATA devices 5041 * 5042 * Return value: 5043 * none 5044 **/ 5045static void ipr_sata_done(struct ipr_cmnd *ipr_cmd) 5046{ 5047 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5048 struct ata_queued_cmd *qc = ipr_cmd->qc; 5049 struct ipr_sata_port *sata_port = qc->ap->private_data; 5050 struct ipr_resource_entry *res = sata_port->res; 5051 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5052 5053 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata, 5054 sizeof(struct ipr_ioasa_gata)); 5055 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 5056 5057 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET) 5058 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus, 5059 res->cfgte.res_addr.target); 5060 5061 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 5062 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status); 5063 else 5064 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status); 5065 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5066 ata_qc_complete(qc); 5067} 5068 5069/** 5070 * ipr_build_ata_ioadl - Build an ATA scatter/gather list 5071 * @ipr_cmd: ipr command struct 5072 * @qc: ATA queued command 5073 * 5074 **/ 5075static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, 5076 struct ata_queued_cmd *qc) 5077{ 5078 u32 ioadl_flags = 0; 5079 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5080 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5081 int len = qc->nbytes + qc->pad_len; 5082 struct scatterlist *sg; 5083 5084 if (len == 0) 5085 return; 5086 5087 if (qc->dma_dir == DMA_TO_DEVICE) { 5088 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5089 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5090 ioarcb->write_data_transfer_length = cpu_to_be32(len); 5091 ioarcb->write_ioadl_len = 5092 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5093 } else if (qc->dma_dir == DMA_FROM_DEVICE) { 5094 ioadl_flags = IPR_IOADL_FLAGS_READ; 5095 ioarcb->read_data_transfer_length = cpu_to_be32(len); 5096 ioarcb->read_ioadl_len = 5097 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5098 } 5099 5100 ata_for_each_sg(sg, qc) { 5101 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 5102 ioadl->address = cpu_to_be32(sg_dma_address(sg)); 5103 if (ata_sg_is_last(sg, qc)) 5104 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5105 else 5106 ioadl++; 5107 } 5108} 5109 5110/** 5111 * ipr_qc_issue - Issue a SATA qc to a device 5112 * @qc: queued command 5113 * 5114 * Return value: 5115 * 0 if success 5116 **/ 5117static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) 5118{ 5119 struct ata_port *ap = qc->ap; 5120 struct ipr_sata_port *sata_port = ap->private_data; 5121 struct ipr_resource_entry *res = sata_port->res; 5122 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5123 struct ipr_cmnd *ipr_cmd; 5124 struct ipr_ioarcb *ioarcb; 5125 struct ipr_ioarcb_ata_regs *regs; 5126 5127 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead)) 5128 return -EIO; 5129 5130 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5131 ioarcb = &ipr_cmd->ioarcb; 5132 regs = &ioarcb->add_data.u.regs; 5133 5134 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data)); 5135 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs)); 5136 5137 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 5138 ipr_cmd->qc = qc; 5139 ipr_cmd->done = ipr_sata_done; 5140 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 5141 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU; 5142 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 5143 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 5144 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem; 5145 5146 ipr_build_ata_ioadl(ipr_cmd, qc); 5147 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 5148 ipr_copy_sata_tf(regs, &qc->tf); 5149 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN); 5150 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 5151 5152 switch (qc->tf.protocol) { 5153 case ATA_PROT_NODATA: 5154 case ATA_PROT_PIO: 5155 break; 5156 5157 case ATA_PROT_DMA: 5158 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 5159 break; 5160 5161 case ATA_PROT_ATAPI: 5162 case ATA_PROT_ATAPI_NODATA: 5163 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 5164 break; 5165 5166 case ATA_PROT_ATAPI_DMA: 5167 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 5168 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 5169 break; 5170 5171 default: 5172 WARN_ON(1); 5173 return -1; 5174 } 5175 5176 mb(); 5177 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr), 5178 ioa_cfg->regs.ioarrin_reg); 5179 return 0; 5180} 5181 5182/** 5183 * ipr_ata_check_status - Return last ATA status 5184 * @ap: ATA port 5185 * 5186 * Return value: 5187 * ATA status 5188 **/ 5189static u8 ipr_ata_check_status(struct ata_port *ap) 5190{ 5191 struct ipr_sata_port *sata_port = ap->private_data; 5192 return sata_port->ioasa.status; 5193} 5194 5195/** 5196 * ipr_ata_check_altstatus - Return last ATA altstatus 5197 * @ap: ATA port 5198 * 5199 * Return value: 5200 * Alt ATA status 5201 **/ 5202static u8 ipr_ata_check_altstatus(struct ata_port *ap) 5203{ 5204 struct ipr_sata_port *sata_port = ap->private_data; 5205 return sata_port->ioasa.alt_status; 5206} 5207 5208static struct ata_port_operations ipr_sata_ops = { 5209 .port_disable = ata_port_disable, 5210 .check_status = ipr_ata_check_status, 5211 .check_altstatus = ipr_ata_check_altstatus, 5212 .dev_select = ata_noop_dev_select, 5213 .phy_reset = ipr_ata_phy_reset, 5214 .post_internal_cmd = ipr_ata_post_internal, 5215 .tf_read = ipr_tf_read, 5216 .qc_prep = ata_noop_qc_prep, 5217 .qc_issue = ipr_qc_issue, 5218 .port_start = ata_sas_port_start, 5219 .port_stop = ata_sas_port_stop 5220}; 5221 5222static struct ata_port_info sata_port_info = { 5223 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET | 5224 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA, 5225 .pio_mask = 0x10, /* pio4 */ 5226 .mwdma_mask = 0x07, 5227 .udma_mask = 0x7f, /* udma0-6 */ 5228 .port_ops = &ipr_sata_ops 5229}; 5230 5231#ifdef CONFIG_PPC_PSERIES 5232static const u16 ipr_blocked_processors[] = { 5233 PV_NORTHSTAR, 5234 PV_PULSAR, 5235 PV_POWER4, 5236 PV_ICESTAR, 5237 PV_SSTAR, 5238 PV_POWER4p, 5239 PV_630, 5240 PV_630p 5241}; 5242 5243/** 5244 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 5245 * @ioa_cfg: ioa cfg struct 5246 * 5247 * Adapters that use Gemstone revision < 3.1 do not work reliably on 5248 * certain pSeries hardware. This function determines if the given 5249 * adapter is in one of these confgurations or not. 5250 * 5251 * Return value: 5252 * 1 if adapter is not supported / 0 if adapter is supported 5253 **/ 5254static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 5255{ 5256 u8 rev_id; 5257 int i; 5258 5259 if (ioa_cfg->type == 0x5702) { 5260 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID, 5261 &rev_id) == PCIBIOS_SUCCESSFUL) { 5262 if (rev_id < 4) { 5263 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ 5264 if (__is_processor(ipr_blocked_processors[i])) 5265 return 1; 5266 } 5267 } 5268 } 5269 } 5270 return 0; 5271} 5272#else 5273#define ipr_invalid_adapter(ioa_cfg) 0 5274#endif 5275 5276/** 5277 * ipr_ioa_bringdown_done - IOA bring down completion. 5278 * @ipr_cmd: ipr command struct 5279 * 5280 * This function processes the completion of an adapter bring down. 5281 * It wakes any reset sleepers. 5282 * 5283 * Return value: 5284 * IPR_RC_JOB_RETURN 5285 **/ 5286static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 5287{ 5288 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5289 5290 ENTER; 5291 ioa_cfg->in_reset_reload = 0; 5292 ioa_cfg->reset_retries = 0; 5293 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5294 wake_up_all(&ioa_cfg->reset_wait_q); 5295 5296 spin_unlock_irq(ioa_cfg->host->host_lock); 5297 scsi_unblock_requests(ioa_cfg->host); 5298 spin_lock_irq(ioa_cfg->host->host_lock); 5299 LEAVE; 5300 5301 return IPR_RC_JOB_RETURN; 5302} 5303 5304/** 5305 * ipr_ioa_reset_done - IOA reset completion. 5306 * @ipr_cmd: ipr command struct 5307 * 5308 * This function processes the completion of an adapter reset. 5309 * It schedules any necessary mid-layer add/removes and 5310 * wakes any reset sleepers. 5311 * 5312 * Return value: 5313 * IPR_RC_JOB_RETURN 5314 **/ 5315static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 5316{ 5317 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5318 struct ipr_resource_entry *res; 5319 struct ipr_hostrcb *hostrcb, *temp; 5320 int i = 0; 5321 5322 ENTER; 5323 ioa_cfg->in_reset_reload = 0; 5324 ioa_cfg->allow_cmds = 1; 5325 ioa_cfg->reset_cmd = NULL; 5326 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 5327 5328 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 5329 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { 5330 ipr_trace; 5331 break; 5332 } 5333 } 5334 schedule_work(&ioa_cfg->work_q); 5335 5336 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { 5337 list_del(&hostrcb->queue); 5338 if (i++ < IPR_NUM_LOG_HCAMS) 5339 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 5340 else 5341 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 5342 } 5343 5344 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 5345 5346 ioa_cfg->reset_retries = 0; 5347 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5348 wake_up_all(&ioa_cfg->reset_wait_q); 5349 5350 spin_unlock_irq(ioa_cfg->host->host_lock); 5351 scsi_unblock_requests(ioa_cfg->host); 5352 spin_lock_irq(ioa_cfg->host->host_lock); 5353 5354 if (!ioa_cfg->allow_cmds) 5355 scsi_block_requests(ioa_cfg->host); 5356 5357 LEAVE; 5358 return IPR_RC_JOB_RETURN; 5359} 5360 5361/** 5362 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 5363 * @supported_dev: supported device struct 5364 * @vpids: vendor product id struct 5365 * 5366 * Return value: 5367 * none 5368 **/ 5369static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 5370 struct ipr_std_inq_vpids *vpids) 5371{ 5372 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 5373 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 5374 supported_dev->num_records = 1; 5375 supported_dev->data_length = 5376 cpu_to_be16(sizeof(struct ipr_supported_device)); 5377 supported_dev->reserved = 0; 5378} 5379 5380/** 5381 * ipr_set_supported_devs - Send Set Supported Devices for a device 5382 * @ipr_cmd: ipr command struct 5383 * 5384 * This function send a Set Supported Devices to the adapter 5385 * 5386 * Return value: 5387 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5388 **/ 5389static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 5390{ 5391 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5392 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 5393 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5394 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5395 struct ipr_resource_entry *res = ipr_cmd->u.res; 5396 5397 ipr_cmd->job_step = ipr_ioa_reset_done; 5398 5399 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 5400 if (!ipr_is_scsi_disk(res)) 5401 continue; 5402 5403 ipr_cmd->u.res = res; 5404 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids); 5405 5406 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5407 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5408 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5409 5410 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 5411 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 5412 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 5413 5414 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | 5415 sizeof(struct ipr_supported_device)); 5416 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma + 5417 offsetof(struct ipr_misc_cbs, supp_dev)); 5418 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5419 ioarcb->write_data_transfer_length = 5420 cpu_to_be32(sizeof(struct ipr_supported_device)); 5421 5422 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 5423 IPR_SET_SUP_DEVICE_TIMEOUT); 5424 5425 ipr_cmd->job_step = ipr_set_supported_devs; 5426 return IPR_RC_JOB_RETURN; 5427 } 5428 5429 return IPR_RC_JOB_CONTINUE; 5430} 5431 5432/** 5433 * ipr_setup_write_cache - Disable write cache if needed 5434 * @ipr_cmd: ipr command struct 5435 * 5436 * This function sets up adapters write cache to desired setting 5437 * 5438 * Return value: 5439 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5440 **/ 5441static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd) 5442{ 5443 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5444 5445 ipr_cmd->job_step = ipr_set_supported_devs; 5446 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 5447 struct ipr_resource_entry, queue); 5448 5449 if (ioa_cfg->cache_state != CACHE_DISABLED) 5450 return IPR_RC_JOB_CONTINUE; 5451 5452 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5453 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5454 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 5455 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 5456 5457 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5458 5459 return IPR_RC_JOB_RETURN; 5460} 5461 5462/** 5463 * ipr_get_mode_page - Locate specified mode page 5464 * @mode_pages: mode page buffer 5465 * @page_code: page code to find 5466 * @len: minimum required length for mode page 5467 * 5468 * Return value: 5469 * pointer to mode page / NULL on failure 5470 **/ 5471static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 5472 u32 page_code, u32 len) 5473{ 5474 struct ipr_mode_page_hdr *mode_hdr; 5475 u32 page_length; 5476 u32 length; 5477 5478 if (!mode_pages || (mode_pages->hdr.length == 0)) 5479 return NULL; 5480 5481 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 5482 mode_hdr = (struct ipr_mode_page_hdr *) 5483 (mode_pages->data + mode_pages->hdr.block_desc_len); 5484 5485 while (length) { 5486 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 5487 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 5488 return mode_hdr; 5489 break; 5490 } else { 5491 page_length = (sizeof(struct ipr_mode_page_hdr) + 5492 mode_hdr->page_length); 5493 length -= page_length; 5494 mode_hdr = (struct ipr_mode_page_hdr *) 5495 ((unsigned long)mode_hdr + page_length); 5496 } 5497 } 5498 return NULL; 5499} 5500 5501/** 5502 * ipr_check_term_power - Check for term power errors 5503 * @ioa_cfg: ioa config struct 5504 * @mode_pages: IOAFP mode pages buffer 5505 * 5506 * Check the IOAFP's mode page 28 for term power errors 5507 * 5508 * Return value: 5509 * nothing 5510 **/ 5511static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 5512 struct ipr_mode_pages *mode_pages) 5513{ 5514 int i; 5515 int entry_length; 5516 struct ipr_dev_bus_entry *bus; 5517 struct ipr_mode_page28 *mode_page; 5518 5519 mode_page = ipr_get_mode_page(mode_pages, 0x28, 5520 sizeof(struct ipr_mode_page28)); 5521 5522 entry_length = mode_page->entry_length; 5523 5524 bus = mode_page->bus; 5525 5526 for (i = 0; i < mode_page->num_entries; i++) { 5527 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 5528 dev_err(&ioa_cfg->pdev->dev, 5529 "Term power is absent on scsi bus %d\n", 5530 bus->res_addr.bus); 5531 } 5532 5533 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 5534 } 5535} 5536 5537/** 5538 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 5539 * @ioa_cfg: ioa config struct 5540 * 5541 * Looks through the config table checking for SES devices. If 5542 * the SES device is in the SES table indicating a maximum SCSI 5543 * bus speed, the speed is limited for the bus. 5544 * 5545 * Return value: 5546 * none 5547 **/ 5548static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 5549{ 5550 u32 max_xfer_rate; 5551 int i; 5552 5553 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 5554 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 5555 ioa_cfg->bus_attr[i].bus_width); 5556 5557 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 5558 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 5559 } 5560} 5561 5562/** 5563 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 5564 * @ioa_cfg: ioa config struct 5565 * @mode_pages: mode page 28 buffer 5566 * 5567 * Updates mode page 28 based on driver configuration 5568 * 5569 * Return value: 5570 * none 5571 **/ 5572static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 5573 struct ipr_mode_pages *mode_pages) 5574{ 5575 int i, entry_length; 5576 struct ipr_dev_bus_entry *bus; 5577 struct ipr_bus_attributes *bus_attr; 5578 struct ipr_mode_page28 *mode_page; 5579 5580 mode_page = ipr_get_mode_page(mode_pages, 0x28, 5581 sizeof(struct ipr_mode_page28)); 5582 5583 entry_length = mode_page->entry_length; 5584 5585 /* Loop for each device bus entry */ 5586 for (i = 0, bus = mode_page->bus; 5587 i < mode_page->num_entries; 5588 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 5589 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 5590 dev_err(&ioa_cfg->pdev->dev, 5591 "Invalid resource address reported: 0x%08X\n", 5592 IPR_GET_PHYS_LOC(bus->res_addr)); 5593 continue; 5594 } 5595 5596 bus_attr = &ioa_cfg->bus_attr[i]; 5597 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 5598 bus->bus_width = bus_attr->bus_width; 5599 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 5600 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 5601 if (bus_attr->qas_enabled) 5602 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 5603 else 5604 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 5605 } 5606} 5607 5608/** 5609 * ipr_build_mode_select - Build a mode select command 5610 * @ipr_cmd: ipr command struct 5611 * @res_handle: resource handle to send command to 5612 * @parm: Byte 2 of Mode Sense command 5613 * @dma_addr: DMA buffer address 5614 * @xfer_len: data transfer length 5615 * 5616 * Return value: 5617 * none 5618 **/ 5619static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 5620 __be32 res_handle, u8 parm, u32 dma_addr, 5621 u8 xfer_len) 5622{ 5623 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5624 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5625 5626 ioarcb->res_handle = res_handle; 5627 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5628 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5629 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 5630 ioarcb->cmd_pkt.cdb[1] = parm; 5631 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5632 5633 ioadl->flags_and_data_len = 5634 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len); 5635 ioadl->address = cpu_to_be32(dma_addr); 5636 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5637 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len); 5638} 5639 5640/** 5641 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 5642 * @ipr_cmd: ipr command struct 5643 * 5644 * This function sets up the SCSI bus attributes and sends 5645 * a Mode Select for Page 28 to activate them. 5646 * 5647 * Return value: 5648 * IPR_RC_JOB_RETURN 5649 **/ 5650static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 5651{ 5652 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5653 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 5654 int length; 5655 5656 ENTER; 5657 ipr_scsi_bus_speed_limit(ioa_cfg); 5658 ipr_check_term_power(ioa_cfg, mode_pages); 5659 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 5660 length = mode_pages->hdr.length + 1; 5661 mode_pages->hdr.length = 0; 5662 5663 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 5664 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 5665 length); 5666 5667 ipr_cmd->job_step = ipr_setup_write_cache; 5668 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5669 5670 LEAVE; 5671 return IPR_RC_JOB_RETURN; 5672} 5673 5674/** 5675 * ipr_build_mode_sense - Builds a mode sense command 5676 * @ipr_cmd: ipr command struct 5677 * @res: resource entry struct 5678 * @parm: Byte 2 of mode sense command 5679 * @dma_addr: DMA address of mode sense buffer 5680 * @xfer_len: Size of DMA buffer 5681 * 5682 * Return value: 5683 * none 5684 **/ 5685static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 5686 __be32 res_handle, 5687 u8 parm, u32 dma_addr, u8 xfer_len) 5688{ 5689 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5690 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5691 5692 ioarcb->res_handle = res_handle; 5693 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 5694 ioarcb->cmd_pkt.cdb[2] = parm; 5695 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5696 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5697 5698 ioadl->flags_and_data_len = 5699 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 5700 ioadl->address = cpu_to_be32(dma_addr); 5701 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5702 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 5703} 5704 5705/** 5706 * ipr_reset_cmd_failed - Handle failure of IOA reset command 5707 * @ipr_cmd: ipr command struct 5708 * 5709 * This function handles the failure of an IOA bringup command. 5710 * 5711 * Return value: 5712 * IPR_RC_JOB_RETURN 5713 **/ 5714static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 5715{ 5716 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5717 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5718 5719 dev_err(&ioa_cfg->pdev->dev, 5720 "0x%02X failed with IOASC: 0x%08X\n", 5721 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 5722 5723 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5724 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5725 return IPR_RC_JOB_RETURN; 5726} 5727 5728/** 5729 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 5730 * @ipr_cmd: ipr command struct 5731 * 5732 * This function handles the failure of a Mode Sense to the IOAFP. 5733 * Some adapters do not handle all mode pages. 5734 * 5735 * Return value: 5736 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5737 **/ 5738static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 5739{ 5740 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5741 5742 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 5743 ipr_cmd->job_step = ipr_setup_write_cache; 5744 return IPR_RC_JOB_CONTINUE; 5745 } 5746 5747 return ipr_reset_cmd_failed(ipr_cmd); 5748} 5749 5750/** 5751 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 5752 * @ipr_cmd: ipr command struct 5753 * 5754 * This function send a Page 28 mode sense to the IOA to 5755 * retrieve SCSI bus attributes. 5756 * 5757 * Return value: 5758 * IPR_RC_JOB_RETURN 5759 **/ 5760static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 5761{ 5762 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5763 5764 ENTER; 5765 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 5766 0x28, ioa_cfg->vpd_cbs_dma + 5767 offsetof(struct ipr_misc_cbs, mode_pages), 5768 sizeof(struct ipr_mode_pages)); 5769 5770 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 5771 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 5772 5773 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5774 5775 LEAVE; 5776 return IPR_RC_JOB_RETURN; 5777} 5778 5779/** 5780 * ipr_init_res_table - Initialize the resource table 5781 * @ipr_cmd: ipr command struct 5782 * 5783 * This function looks through the existing resource table, comparing 5784 * it with the config table. This function will take care of old/new 5785 * devices and schedule adding/removing them from the mid-layer 5786 * as appropriate. 5787 * 5788 * Return value: 5789 * IPR_RC_JOB_CONTINUE 5790 **/ 5791static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 5792{ 5793 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5794 struct ipr_resource_entry *res, *temp; 5795 struct ipr_config_table_entry *cfgte; 5796 int found, i; 5797 LIST_HEAD(old_res); 5798 5799 ENTER; 5800 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ) 5801 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 5802 5803 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 5804 list_move_tail(&res->queue, &old_res); 5805 5806 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) { 5807 cfgte = &ioa_cfg->cfg_table->dev[i]; 5808 found = 0; 5809 5810 list_for_each_entry_safe(res, temp, &old_res, queue) { 5811 if (!memcmp(&res->cfgte.res_addr, 5812 &cfgte->res_addr, sizeof(cfgte->res_addr))) { 5813 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5814 found = 1; 5815 break; 5816 } 5817 } 5818 5819 if (!found) { 5820 if (list_empty(&ioa_cfg->free_res_q)) { 5821 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 5822 break; 5823 } 5824 5825 found = 1; 5826 res = list_entry(ioa_cfg->free_res_q.next, 5827 struct ipr_resource_entry, queue); 5828 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5829 ipr_init_res_entry(res); 5830 res->add_to_ml = 1; 5831 } 5832 5833 if (found) 5834 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 5835 } 5836 5837 list_for_each_entry_safe(res, temp, &old_res, queue) { 5838 if (res->sdev) { 5839 res->del_from_ml = 1; 5840 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE; 5841 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5842 } else { 5843 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 5844 } 5845 } 5846 5847 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 5848 5849 LEAVE; 5850 return IPR_RC_JOB_CONTINUE; 5851} 5852 5853/** 5854 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 5855 * @ipr_cmd: ipr command struct 5856 * 5857 * This function sends a Query IOA Configuration command 5858 * to the adapter to retrieve the IOA configuration table. 5859 * 5860 * Return value: 5861 * IPR_RC_JOB_RETURN 5862 **/ 5863static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 5864{ 5865 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5866 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5867 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5868 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 5869 5870 ENTER; 5871 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 5872 ucode_vpd->major_release, ucode_vpd->card_type, 5873 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 5874 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5875 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5876 5877 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 5878 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff; 5879 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff; 5880 5881 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5882 ioarcb->read_data_transfer_length = 5883 cpu_to_be32(sizeof(struct ipr_config_table)); 5884 5885 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma); 5886 ioadl->flags_and_data_len = 5887 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table)); 5888 5889 ipr_cmd->job_step = ipr_init_res_table; 5890 5891 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5892 5893 LEAVE; 5894 return IPR_RC_JOB_RETURN; 5895} 5896 5897/** 5898 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 5899 * @ipr_cmd: ipr command struct 5900 * 5901 * This utility function sends an inquiry to the adapter. 5902 * 5903 * Return value: 5904 * none 5905 **/ 5906static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 5907 u32 dma_addr, u8 xfer_len) 5908{ 5909 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5910 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5911 5912 ENTER; 5913 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5914 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5915 5916 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 5917 ioarcb->cmd_pkt.cdb[1] = flags; 5918 ioarcb->cmd_pkt.cdb[2] = page; 5919 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5920 5921 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5922 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 5923 5924 ioadl->address = cpu_to_be32(dma_addr); 5925 ioadl->flags_and_data_len = 5926 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 5927 5928 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5929 LEAVE; 5930} 5931 5932/** 5933 * ipr_inquiry_page_supported - Is the given inquiry page supported 5934 * @page0: inquiry page 0 buffer 5935 * @page: page code. 5936 * 5937 * This function determines if the specified inquiry page is supported. 5938 * 5939 * Return value: 5940 * 1 if page is supported / 0 if not 5941 **/ 5942static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 5943{ 5944 int i; 5945 5946 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 5947 if (page0->page[i] == page) 5948 return 1; 5949 5950 return 0; 5951} 5952 5953/** 5954 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 5955 * @ipr_cmd: ipr command struct 5956 * 5957 * This function sends a Page 3 inquiry to the adapter 5958 * to retrieve software VPD information. 5959 * 5960 * Return value: 5961 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5962 **/ 5963static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 5964{ 5965 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5966 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 5967 5968 ENTER; 5969 5970 if (!ipr_inquiry_page_supported(page0, 1)) 5971 ioa_cfg->cache_state = CACHE_NONE; 5972 5973 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 5974 5975 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 5976 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 5977 sizeof(struct ipr_inquiry_page3)); 5978 5979 LEAVE; 5980 return IPR_RC_JOB_RETURN; 5981} 5982 5983/** 5984 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 5985 * @ipr_cmd: ipr command struct 5986 * 5987 * This function sends a Page 0 inquiry to the adapter 5988 * to retrieve supported inquiry pages. 5989 * 5990 * Return value: 5991 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5992 **/ 5993static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 5994{ 5995 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5996 char type[5]; 5997 5998 ENTER; 5999 6000 /* Grab the type out of the VPD and store it away */ 6001 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 6002 type[4] = '\0'; 6003 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 6004 6005 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 6006 6007 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 6008 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 6009 sizeof(struct ipr_inquiry_page0)); 6010 6011 LEAVE; 6012 return IPR_RC_JOB_RETURN; 6013} 6014 6015/** 6016 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 6017 * @ipr_cmd: ipr command struct 6018 * 6019 * This function sends a standard inquiry to the adapter. 6020 * 6021 * Return value: 6022 * IPR_RC_JOB_RETURN 6023 **/ 6024static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 6025{ 6026 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6027 6028 ENTER; 6029 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 6030 6031 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 6032 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 6033 sizeof(struct ipr_ioa_vpd)); 6034 6035 LEAVE; 6036 return IPR_RC_JOB_RETURN; 6037} 6038 6039/** 6040 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ. 6041 * @ipr_cmd: ipr command struct 6042 * 6043 * This function send an Identify Host Request Response Queue 6044 * command to establish the HRRQ with the adapter. 6045 * 6046 * Return value: 6047 * IPR_RC_JOB_RETURN 6048 **/ 6049static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd) 6050{ 6051 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6052 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6053 6054 ENTER; 6055 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 6056 6057 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 6058 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6059 6060 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6061 ioarcb->cmd_pkt.cdb[2] = 6062 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff; 6063 ioarcb->cmd_pkt.cdb[3] = 6064 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff; 6065 ioarcb->cmd_pkt.cdb[4] = 6066 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff; 6067 ioarcb->cmd_pkt.cdb[5] = 6068 ((u32) ioa_cfg->host_rrq_dma) & 0xff; 6069 ioarcb->cmd_pkt.cdb[7] = 6070 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; 6071 ioarcb->cmd_pkt.cdb[8] = 6072 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; 6073 6074 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 6075 6076 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6077 6078 LEAVE; 6079 return IPR_RC_JOB_RETURN; 6080} 6081 6082/** 6083 * ipr_reset_timer_done - Adapter reset timer function 6084 * @ipr_cmd: ipr command struct 6085 * 6086 * Description: This function is used in adapter reset processing 6087 * for timing events. If the reset_cmd pointer in the IOA 6088 * config struct is not this adapter's we are doing nested 6089 * resets and fail_all_ops will take care of freeing the 6090 * command block. 6091 * 6092 * Return value: 6093 * none 6094 **/ 6095static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 6096{ 6097 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6098 unsigned long lock_flags = 0; 6099 6100 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6101 6102 if (ioa_cfg->reset_cmd == ipr_cmd) { 6103 list_del(&ipr_cmd->queue); 6104 ipr_cmd->done(ipr_cmd); 6105 } 6106 6107 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6108} 6109 6110/** 6111 * ipr_reset_start_timer - Start a timer for adapter reset job 6112 * @ipr_cmd: ipr command struct 6113 * @timeout: timeout value 6114 * 6115 * Description: This function is used in adapter reset processing 6116 * for timing events. If the reset_cmd pointer in the IOA 6117 * config struct is not this adapter's we are doing nested 6118 * resets and fail_all_ops will take care of freeing the 6119 * command block. 6120 * 6121 * Return value: 6122 * none 6123 **/ 6124static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 6125 unsigned long timeout) 6126{ 6127 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 6128 ipr_cmd->done = ipr_reset_ioa_job; 6129 6130 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 6131 ipr_cmd->timer.expires = jiffies + timeout; 6132 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 6133 add_timer(&ipr_cmd->timer); 6134} 6135 6136/** 6137 * ipr_init_ioa_mem - Initialize ioa_cfg control block 6138 * @ioa_cfg: ioa cfg struct 6139 * 6140 * Return value: 6141 * nothing 6142 **/ 6143static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 6144{ 6145 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); 6146 6147 /* Initialize Host RRQ pointers */ 6148 ioa_cfg->hrrq_start = ioa_cfg->host_rrq; 6149 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; 6150 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 6151 ioa_cfg->toggle_bit = 1; 6152 6153 /* Zero out config table */ 6154 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table)); 6155} 6156 6157/** 6158 * ipr_reset_enable_ioa - Enable the IOA following a reset. 6159 * @ipr_cmd: ipr command struct 6160 * 6161 * This function reinitializes some control blocks and 6162 * enables destructive diagnostics on the adapter. 6163 * 6164 * Return value: 6165 * IPR_RC_JOB_RETURN 6166 **/ 6167static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 6168{ 6169 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6170 volatile u32 int_reg; 6171 6172 ENTER; 6173 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq; 6174 ipr_init_ioa_mem(ioa_cfg); 6175 6176 ioa_cfg->allow_interrupts = 1; 6177 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 6178 6179 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 6180 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 6181 ioa_cfg->regs.clr_interrupt_mask_reg); 6182 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 6183 return IPR_RC_JOB_CONTINUE; 6184 } 6185 6186 /* Enable destructive diagnostics on IOA */ 6187 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg); 6188 6189 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg); 6190 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 6191 6192 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 6193 6194 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 6195 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ); 6196 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 6197 ipr_cmd->done = ipr_reset_ioa_job; 6198 add_timer(&ipr_cmd->timer); 6199 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 6200 6201 LEAVE; 6202 return IPR_RC_JOB_RETURN; 6203} 6204 6205/** 6206 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 6207 * @ipr_cmd: ipr command struct 6208 * 6209 * This function is invoked when an adapter dump has run out 6210 * of processing time. 6211 * 6212 * Return value: 6213 * IPR_RC_JOB_CONTINUE 6214 **/ 6215static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 6216{ 6217 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6218 6219 if (ioa_cfg->sdt_state == GET_DUMP) 6220 ioa_cfg->sdt_state = ABORT_DUMP; 6221 6222 ipr_cmd->job_step = ipr_reset_alert; 6223 6224 return IPR_RC_JOB_CONTINUE; 6225} 6226 6227/** 6228 * ipr_unit_check_no_data - Log a unit check/no data error log 6229 * @ioa_cfg: ioa config struct 6230 * 6231 * Logs an error indicating the adapter unit checked, but for some 6232 * reason, we were unable to fetch the unit check buffer. 6233 * 6234 * Return value: 6235 * nothing 6236 **/ 6237static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 6238{ 6239 ioa_cfg->errors_logged++; 6240 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 6241} 6242 6243/** 6244 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 6245 * @ioa_cfg: ioa config struct 6246 * 6247 * Fetches the unit check buffer from the adapter by clocking the data 6248 * through the mailbox register. 6249 * 6250 * Return value: 6251 * nothing 6252 **/ 6253static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 6254{ 6255 unsigned long mailbox; 6256 struct ipr_hostrcb *hostrcb; 6257 struct ipr_uc_sdt sdt; 6258 int rc, length; 6259 6260 mailbox = readl(ioa_cfg->ioa_mailbox); 6261 6262 if (!ipr_sdt_is_fmt2(mailbox)) { 6263 ipr_unit_check_no_data(ioa_cfg); 6264 return; 6265 } 6266 6267 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 6268 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 6269 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 6270 6271 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) || 6272 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) { 6273 ipr_unit_check_no_data(ioa_cfg); 6274 return; 6275 } 6276 6277 /* Find length of the first sdt entry (UC buffer) */ 6278 length = (be32_to_cpu(sdt.entry[0].end_offset) - 6279 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK; 6280 6281 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 6282 struct ipr_hostrcb, queue); 6283 list_del(&hostrcb->queue); 6284 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 6285 6286 rc = ipr_get_ldump_data_section(ioa_cfg, 6287 be32_to_cpu(sdt.entry[0].bar_str_offset), 6288 (__be32 *)&hostrcb->hcam, 6289 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 6290 6291 if (!rc) 6292 ipr_handle_log_data(ioa_cfg, hostrcb); 6293 else 6294 ipr_unit_check_no_data(ioa_cfg); 6295 6296 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 6297} 6298 6299/** 6300 * ipr_reset_restore_cfg_space - Restore PCI config space. 6301 * @ipr_cmd: ipr command struct 6302 * 6303 * Description: This function restores the saved PCI config space of 6304 * the adapter, fails all outstanding ops back to the callers, and 6305 * fetches the dump/unit check if applicable to this reset. 6306 * 6307 * Return value: 6308 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6309 **/ 6310static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 6311{ 6312 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6313 int rc; 6314 6315 ENTER; 6316 pci_unblock_user_cfg_access(ioa_cfg->pdev); 6317 rc = pci_restore_state(ioa_cfg->pdev); 6318 6319 if (rc != PCIBIOS_SUCCESSFUL) { 6320 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6321 return IPR_RC_JOB_CONTINUE; 6322 } 6323 6324 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 6325 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6326 return IPR_RC_JOB_CONTINUE; 6327 } 6328 6329 ipr_fail_all_ops(ioa_cfg); 6330 6331 if (ioa_cfg->ioa_unit_checked) { 6332 ioa_cfg->ioa_unit_checked = 0; 6333 ipr_get_unit_check_buffer(ioa_cfg); 6334 ipr_cmd->job_step = ipr_reset_alert; 6335 ipr_reset_start_timer(ipr_cmd, 0); 6336 return IPR_RC_JOB_RETURN; 6337 } 6338 6339 if (ioa_cfg->in_ioa_bringdown) { 6340 ipr_cmd->job_step = ipr_ioa_bringdown_done; 6341 } else { 6342 ipr_cmd->job_step = ipr_reset_enable_ioa; 6343 6344 if (GET_DUMP == ioa_cfg->sdt_state) { 6345 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); 6346 ipr_cmd->job_step = ipr_reset_wait_for_dump; 6347 schedule_work(&ioa_cfg->work_q); 6348 return IPR_RC_JOB_RETURN; 6349 } 6350 } 6351 6352 ENTER; 6353 return IPR_RC_JOB_CONTINUE; 6354} 6355 6356/** 6357 * ipr_reset_start_bist - Run BIST on the adapter. 6358 * @ipr_cmd: ipr command struct 6359 * 6360 * Description: This function runs BIST on the adapter, then delays 2 seconds. 6361 * 6362 * Return value: 6363 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6364 **/ 6365static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 6366{ 6367 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6368 int rc; 6369 6370 ENTER; 6371 pci_block_user_cfg_access(ioa_cfg->pdev); 6372 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 6373 6374 if (rc != PCIBIOS_SUCCESSFUL) { 6375 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6376 rc = IPR_RC_JOB_CONTINUE; 6377 } else { 6378 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 6379 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 6380 rc = IPR_RC_JOB_RETURN; 6381 } 6382 6383 LEAVE; 6384 return rc; 6385} 6386 6387/** 6388 * ipr_reset_allowed - Query whether or not IOA can be reset 6389 * @ioa_cfg: ioa config struct 6390 * 6391 * Return value: 6392 * 0 if reset not allowed / non-zero if reset is allowed 6393 **/ 6394static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 6395{ 6396 volatile u32 temp_reg; 6397 6398 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 6399 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 6400} 6401 6402/** 6403 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 6404 * @ipr_cmd: ipr command struct 6405 * 6406 * Description: This function waits for adapter permission to run BIST, 6407 * then runs BIST. If the adapter does not give permission after a 6408 * reasonable time, we will reset the adapter anyway. The impact of 6409 * resetting the adapter without warning the adapter is the risk of 6410 * losing the persistent error log on the adapter. If the adapter is 6411 * reset while it is writing to the flash on the adapter, the flash 6412 * segment will have bad ECC and be zeroed. 6413 * 6414 * Return value: 6415 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6416 **/ 6417static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 6418{ 6419 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6420 int rc = IPR_RC_JOB_RETURN; 6421 6422 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 6423 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 6424 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 6425 } else { 6426 ipr_cmd->job_step = ipr_reset_start_bist; 6427 rc = IPR_RC_JOB_CONTINUE; 6428 } 6429 6430 return rc; 6431} 6432 6433/** 6434 * ipr_reset_alert_part2 - Alert the adapter of a pending reset 6435 * @ipr_cmd: ipr command struct 6436 * 6437 * Description: This function alerts the adapter that it will be reset. 6438 * If memory space is not currently enabled, proceed directly 6439 * to running BIST on the adapter. The timer must always be started 6440 * so we guarantee we do not run BIST from ipr_isr. 6441 * 6442 * Return value: 6443 * IPR_RC_JOB_RETURN 6444 **/ 6445static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 6446{ 6447 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6448 u16 cmd_reg; 6449 int rc; 6450 6451 ENTER; 6452 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 6453 6454 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 6455 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 6456 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg); 6457 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 6458 } else { 6459 ipr_cmd->job_step = ipr_reset_start_bist; 6460 } 6461 6462 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 6463 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 6464 6465 LEAVE; 6466 return IPR_RC_JOB_RETURN; 6467} 6468 6469/** 6470 * ipr_reset_ucode_download_done - Microcode download completion 6471 * @ipr_cmd: ipr command struct 6472 * 6473 * Description: This function unmaps the microcode download buffer. 6474 * 6475 * Return value: 6476 * IPR_RC_JOB_CONTINUE 6477 **/ 6478static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 6479{ 6480 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6481 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 6482 6483 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, 6484 sglist->num_sg, DMA_TO_DEVICE); 6485 6486 ipr_cmd->job_step = ipr_reset_alert; 6487 return IPR_RC_JOB_CONTINUE; 6488} 6489 6490/** 6491 * ipr_reset_ucode_download - Download microcode to the adapter 6492 * @ipr_cmd: ipr command struct 6493 * 6494 * Description: This function checks to see if it there is microcode 6495 * to download to the adapter. If there is, a download is performed. 6496 * 6497 * Return value: 6498 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6499 **/ 6500static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 6501{ 6502 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6503 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 6504 6505 ENTER; 6506 ipr_cmd->job_step = ipr_reset_alert; 6507 6508 if (!sglist) 6509 return IPR_RC_JOB_CONTINUE; 6510 6511 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6512 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6513 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 6514 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 6515 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 6516 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 6517 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 6518 6519 ipr_build_ucode_ioadl(ipr_cmd, sglist); 6520 ipr_cmd->job_step = ipr_reset_ucode_download_done; 6521 6522 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 6523 IPR_WRITE_BUFFER_TIMEOUT); 6524 6525 LEAVE; 6526 return IPR_RC_JOB_RETURN; 6527} 6528 6529/** 6530 * ipr_reset_shutdown_ioa - Shutdown the adapter 6531 * @ipr_cmd: ipr command struct 6532 * 6533 * Description: This function issues an adapter shutdown of the 6534 * specified type to the specified adapter as part of the 6535 * adapter reset job. 6536 * 6537 * Return value: 6538 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6539 **/ 6540static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 6541{ 6542 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6543 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 6544 unsigned long timeout; 6545 int rc = IPR_RC_JOB_CONTINUE; 6546 6547 ENTER; 6548 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { 6549 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6550 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6551 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 6552 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 6553 6554 if (shutdown_type == IPR_SHUTDOWN_ABBREV) 6555 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 6556 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 6557 timeout = IPR_INTERNAL_TIMEOUT; 6558 else 6559 timeout = IPR_SHUTDOWN_TIMEOUT; 6560 6561 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 6562 6563 rc = IPR_RC_JOB_RETURN; 6564 ipr_cmd->job_step = ipr_reset_ucode_download; 6565 } else 6566 ipr_cmd->job_step = ipr_reset_alert; 6567 6568 LEAVE; 6569 return rc; 6570} 6571 6572/** 6573 * ipr_reset_ioa_job - Adapter reset job 6574 * @ipr_cmd: ipr command struct 6575 * 6576 * Description: This function is the job router for the adapter reset job. 6577 * 6578 * Return value: 6579 * none 6580 **/ 6581static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 6582{ 6583 u32 rc, ioasc; 6584 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6585 6586 do { 6587 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 6588 6589 if (ioa_cfg->reset_cmd != ipr_cmd) { 6590 /* 6591 * We are doing nested adapter resets and this is 6592 * not the current reset job. 6593 */ 6594 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6595 return; 6596 } 6597 6598 if (IPR_IOASC_SENSE_KEY(ioasc)) { 6599 rc = ipr_cmd->job_step_failed(ipr_cmd); 6600 if (rc == IPR_RC_JOB_RETURN) 6601 return; 6602 } 6603 6604 ipr_reinit_ipr_cmnd(ipr_cmd); 6605 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 6606 rc = ipr_cmd->job_step(ipr_cmd); 6607 } while(rc == IPR_RC_JOB_CONTINUE); 6608} 6609 6610/** 6611 * _ipr_initiate_ioa_reset - Initiate an adapter reset 6612 * @ioa_cfg: ioa config struct 6613 * @job_step: first job step of reset job 6614 * @shutdown_type: shutdown type 6615 * 6616 * Description: This function will initiate the reset of the given adapter 6617 * starting at the selected job step. 6618 * If the caller needs to wait on the completion of the reset, 6619 * the caller must sleep on the reset_wait_q. 6620 * 6621 * Return value: 6622 * none 6623 **/ 6624static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 6625 int (*job_step) (struct ipr_cmnd *), 6626 enum ipr_shutdown_type shutdown_type) 6627{ 6628 struct ipr_cmnd *ipr_cmd; 6629 6630 ioa_cfg->in_reset_reload = 1; 6631 ioa_cfg->allow_cmds = 0; 6632 scsi_block_requests(ioa_cfg->host); 6633 6634 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 6635 ioa_cfg->reset_cmd = ipr_cmd; 6636 ipr_cmd->job_step = job_step; 6637 ipr_cmd->u.shutdown_type = shutdown_type; 6638 6639 ipr_reset_ioa_job(ipr_cmd); 6640} 6641 6642/** 6643 * ipr_initiate_ioa_reset - Initiate an adapter reset 6644 * @ioa_cfg: ioa config struct 6645 * @shutdown_type: shutdown type 6646 * 6647 * Description: This function will initiate the reset of the given adapter. 6648 * If the caller needs to wait on the completion of the reset, 6649 * the caller must sleep on the reset_wait_q. 6650 * 6651 * Return value: 6652 * none 6653 **/ 6654static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 6655 enum ipr_shutdown_type shutdown_type) 6656{ 6657 if (ioa_cfg->ioa_is_dead) 6658 return; 6659 6660 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) 6661 ioa_cfg->sdt_state = ABORT_DUMP; 6662 6663 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 6664 dev_err(&ioa_cfg->pdev->dev, 6665 "IOA taken offline - error recovery failed\n"); 6666 6667 ioa_cfg->reset_retries = 0; 6668 ioa_cfg->ioa_is_dead = 1; 6669 6670 if (ioa_cfg->in_ioa_bringdown) { 6671 ioa_cfg->reset_cmd = NULL; 6672 ioa_cfg->in_reset_reload = 0; 6673 ipr_fail_all_ops(ioa_cfg); 6674 wake_up_all(&ioa_cfg->reset_wait_q); 6675 6676 spin_unlock_irq(ioa_cfg->host->host_lock); 6677 scsi_unblock_requests(ioa_cfg->host); 6678 spin_lock_irq(ioa_cfg->host->host_lock); 6679 return; 6680 } else { 6681 ioa_cfg->in_ioa_bringdown = 1; 6682 shutdown_type = IPR_SHUTDOWN_NONE; 6683 } 6684 } 6685 6686 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 6687 shutdown_type); 6688} 6689 6690/** 6691 * ipr_reset_freeze - Hold off all I/O activity 6692 * @ipr_cmd: ipr command struct 6693 * 6694 * Description: If the PCI slot is frozen, hold off all I/O 6695 * activity; then, as soon as the slot is available again, 6696 * initiate an adapter reset. 6697 */ 6698static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 6699{ 6700 /* Disallow new interrupts, avoid loop */ 6701 ipr_cmd->ioa_cfg->allow_interrupts = 0; 6702 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 6703 ipr_cmd->done = ipr_reset_ioa_job; 6704 return IPR_RC_JOB_RETURN; 6705} 6706 6707/** 6708 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 6709 * @pdev: PCI device struct 6710 * 6711 * Description: This routine is called to tell us that the PCI bus 6712 * is down. Can't do anything here, except put the device driver 6713 * into a holding pattern, waiting for the PCI bus to come back. 6714 */ 6715static void ipr_pci_frozen(struct pci_dev *pdev) 6716{ 6717 unsigned long flags = 0; 6718 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6719 6720 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6721 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 6722 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6723} 6724 6725/** 6726 * ipr_pci_slot_reset - Called when PCI slot has been reset. 6727 * @pdev: PCI device struct 6728 * 6729 * Description: This routine is called by the pci error recovery 6730 * code after the PCI slot has been reset, just before we 6731 * should resume normal operations. 6732 */ 6733static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 6734{ 6735 unsigned long flags = 0; 6736 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6737 6738 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6739 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 6740 IPR_SHUTDOWN_NONE); 6741 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6742 return PCI_ERS_RESULT_RECOVERED; 6743} 6744 6745/** 6746 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 6747 * @pdev: PCI device struct 6748 * 6749 * Description: This routine is called when the PCI bus has 6750 * permanently failed. 6751 */ 6752static void ipr_pci_perm_failure(struct pci_dev *pdev) 6753{ 6754 unsigned long flags = 0; 6755 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6756 6757 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6758 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 6759 ioa_cfg->sdt_state = ABORT_DUMP; 6760 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES; 6761 ioa_cfg->in_ioa_bringdown = 1; 6762 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6763 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6764} 6765 6766/** 6767 * ipr_pci_error_detected - Called when a PCI error is detected. 6768 * @pdev: PCI device struct 6769 * @state: PCI channel state 6770 * 6771 * Description: Called when a PCI error is detected. 6772 * 6773 * Return value: 6774 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 6775 */ 6776static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 6777 pci_channel_state_t state) 6778{ 6779 switch (state) { 6780 case pci_channel_io_frozen: 6781 ipr_pci_frozen(pdev); 6782 return PCI_ERS_RESULT_NEED_RESET; 6783 case pci_channel_io_perm_failure: 6784 ipr_pci_perm_failure(pdev); 6785 return PCI_ERS_RESULT_DISCONNECT; 6786 break; 6787 default: 6788 break; 6789 } 6790 return PCI_ERS_RESULT_NEED_RESET; 6791} 6792 6793/** 6794 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 6795 * @ioa_cfg: ioa cfg struct 6796 * 6797 * Description: This is the second phase of adapter intialization 6798 * This function takes care of initilizing the adapter to the point 6799 * where it can accept new commands. 6800 6801 * Return value: 6802 * 0 on sucess / -EIO on failure 6803 **/ 6804static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 6805{ 6806 int rc = 0; 6807 unsigned long host_lock_flags = 0; 6808 6809 ENTER; 6810 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 6811 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 6812 if (ioa_cfg->needs_hard_reset) { 6813 ioa_cfg->needs_hard_reset = 0; 6814 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6815 } else 6816 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 6817 IPR_SHUTDOWN_NONE); 6818 6819 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 6820 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6821 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 6822 6823 if (ioa_cfg->ioa_is_dead) { 6824 rc = -EIO; 6825 } else if (ipr_invalid_adapter(ioa_cfg)) { 6826 if (!ipr_testmode) 6827 rc = -EIO; 6828 6829 dev_err(&ioa_cfg->pdev->dev, 6830 "Adapter not supported in this hardware configuration.\n"); 6831 } 6832 6833 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 6834 6835 LEAVE; 6836 return rc; 6837} 6838 6839/** 6840 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 6841 * @ioa_cfg: ioa config struct 6842 * 6843 * Return value: 6844 * none 6845 **/ 6846static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 6847{ 6848 int i; 6849 6850 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 6851 if (ioa_cfg->ipr_cmnd_list[i]) 6852 pci_pool_free(ioa_cfg->ipr_cmd_pool, 6853 ioa_cfg->ipr_cmnd_list[i], 6854 ioa_cfg->ipr_cmnd_list_dma[i]); 6855 6856 ioa_cfg->ipr_cmnd_list[i] = NULL; 6857 } 6858 6859 if (ioa_cfg->ipr_cmd_pool) 6860 pci_pool_destroy (ioa_cfg->ipr_cmd_pool); 6861 6862 ioa_cfg->ipr_cmd_pool = NULL; 6863} 6864 6865/** 6866 * ipr_free_mem - Frees memory allocated for an adapter 6867 * @ioa_cfg: ioa cfg struct 6868 * 6869 * Return value: 6870 * nothing 6871 **/ 6872static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 6873{ 6874 int i; 6875 6876 kfree(ioa_cfg->res_entries); 6877 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), 6878 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 6879 ipr_free_cmd_blks(ioa_cfg); 6880 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 6881 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 6882 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table), 6883 ioa_cfg->cfg_table, 6884 ioa_cfg->cfg_table_dma); 6885 6886 for (i = 0; i < IPR_NUM_HCAMS; i++) { 6887 pci_free_consistent(ioa_cfg->pdev, 6888 sizeof(struct ipr_hostrcb), 6889 ioa_cfg->hostrcb[i], 6890 ioa_cfg->hostrcb_dma[i]); 6891 } 6892 6893 ipr_free_dump(ioa_cfg); 6894 kfree(ioa_cfg->trace); 6895} 6896 6897/** 6898 * ipr_free_all_resources - Free all allocated resources for an adapter. 6899 * @ipr_cmd: ipr command struct 6900 * 6901 * This function frees all allocated resources for the 6902 * specified adapter. 6903 * 6904 * Return value: 6905 * none 6906 **/ 6907static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 6908{ 6909 struct pci_dev *pdev = ioa_cfg->pdev; 6910 6911 ENTER; 6912 free_irq(pdev->irq, ioa_cfg); 6913 iounmap(ioa_cfg->hdw_dma_regs); 6914 pci_release_regions(pdev); 6915 ipr_free_mem(ioa_cfg); 6916 scsi_host_put(ioa_cfg->host); 6917 pci_disable_device(pdev); 6918 LEAVE; 6919} 6920 6921/** 6922 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 6923 * @ioa_cfg: ioa config struct 6924 * 6925 * Return value: 6926 * 0 on success / -ENOMEM on allocation failure 6927 **/ 6928static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 6929{ 6930 struct ipr_cmnd *ipr_cmd; 6931 struct ipr_ioarcb *ioarcb; 6932 dma_addr_t dma_addr; 6933 int i; 6934 6935 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, 6936 sizeof(struct ipr_cmnd), 8, 0); 6937 6938 if (!ioa_cfg->ipr_cmd_pool) 6939 return -ENOMEM; 6940 6941 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 6942 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr); 6943 6944 if (!ipr_cmd) { 6945 ipr_free_cmd_blks(ioa_cfg); 6946 return -ENOMEM; 6947 } 6948 6949 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 6950 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 6951 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 6952 6953 ioarcb = &ipr_cmd->ioarcb; 6954 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 6955 ioarcb->host_response_handle = cpu_to_be32(i << 2); 6956 ioarcb->write_ioadl_addr = 6957 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); 6958 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 6959 ioarcb->ioasa_host_pci_addr = 6960 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa)); 6961 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 6962 ipr_cmd->cmd_index = i; 6963 ipr_cmd->ioa_cfg = ioa_cfg; 6964 ipr_cmd->sense_buffer_dma = dma_addr + 6965 offsetof(struct ipr_cmnd, sense_buffer); 6966 6967 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6968 } 6969 6970 return 0; 6971} 6972 6973/** 6974 * ipr_alloc_mem - Allocate memory for an adapter 6975 * @ioa_cfg: ioa config struct 6976 * 6977 * Return value: 6978 * 0 on success / non-zero for error 6979 **/ 6980static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 6981{ 6982 struct pci_dev *pdev = ioa_cfg->pdev; 6983 int i, rc = -ENOMEM; 6984 6985 ENTER; 6986 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * 6987 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL); 6988 6989 if (!ioa_cfg->res_entries) 6990 goto out; 6991 6992 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++) 6993 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 6994 6995 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, 6996 sizeof(struct ipr_misc_cbs), 6997 &ioa_cfg->vpd_cbs_dma); 6998 6999 if (!ioa_cfg->vpd_cbs) 7000 goto out_free_res_entries; 7001 7002 if (ipr_alloc_cmd_blks(ioa_cfg)) 7003 goto out_free_vpd_cbs; 7004 7005 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, 7006 sizeof(u32) * IPR_NUM_CMD_BLKS, 7007 &ioa_cfg->host_rrq_dma); 7008 7009 if (!ioa_cfg->host_rrq) 7010 goto out_ipr_free_cmd_blocks; 7011 7012 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev, 7013 sizeof(struct ipr_config_table), 7014 &ioa_cfg->cfg_table_dma); 7015 7016 if (!ioa_cfg->cfg_table) 7017 goto out_free_host_rrq; 7018 7019 for (i = 0; i < IPR_NUM_HCAMS; i++) { 7020 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, 7021 sizeof(struct ipr_hostrcb), 7022 &ioa_cfg->hostrcb_dma[i]); 7023 7024 if (!ioa_cfg->hostrcb[i]) 7025 goto out_free_hostrcb_dma; 7026 7027 ioa_cfg->hostrcb[i]->hostrcb_dma = 7028 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 7029 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg; 7030 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 7031 } 7032 7033 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * 7034 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 7035 7036 if (!ioa_cfg->trace) 7037 goto out_free_hostrcb_dma; 7038 7039 rc = 0; 7040out: 7041 LEAVE; 7042 return rc; 7043 7044out_free_hostrcb_dma: 7045 while (i-- > 0) { 7046 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), 7047 ioa_cfg->hostrcb[i], 7048 ioa_cfg->hostrcb_dma[i]); 7049 } 7050 pci_free_consistent(pdev, sizeof(struct ipr_config_table), 7051 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma); 7052out_free_host_rrq: 7053 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 7054 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 7055out_ipr_free_cmd_blocks: 7056 ipr_free_cmd_blks(ioa_cfg); 7057out_free_vpd_cbs: 7058 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), 7059 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 7060out_free_res_entries: 7061 kfree(ioa_cfg->res_entries); 7062 goto out; 7063} 7064 7065/** 7066 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 7067 * @ioa_cfg: ioa config struct 7068 * 7069 * Return value: 7070 * none 7071 **/ 7072static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 7073{ 7074 int i; 7075 7076 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 7077 ioa_cfg->bus_attr[i].bus = i; 7078 ioa_cfg->bus_attr[i].qas_enabled = 0; 7079 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 7080 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 7081 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 7082 else 7083 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 7084 } 7085} 7086 7087/** 7088 * ipr_init_ioa_cfg - Initialize IOA config struct 7089 * @ioa_cfg: ioa config struct 7090 * @host: scsi host struct 7091 * @pdev: PCI dev struct 7092 * 7093 * Return value: 7094 * none 7095 **/ 7096static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 7097 struct Scsi_Host *host, struct pci_dev *pdev) 7098{ 7099 const struct ipr_interrupt_offsets *p; 7100 struct ipr_interrupts *t; 7101 void __iomem *base; 7102 7103 ioa_cfg->host = host; 7104 ioa_cfg->pdev = pdev; 7105 ioa_cfg->log_level = ipr_log_level; 7106 ioa_cfg->doorbell = IPR_DOORBELL; 7107 if (!ipr_auto_create) 7108 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 7109 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 7110 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 7111 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); 7112 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); 7113 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 7114 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 7115 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 7116 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 7117 7118 INIT_LIST_HEAD(&ioa_cfg->free_q); 7119 INIT_LIST_HEAD(&ioa_cfg->pending_q); 7120 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 7121 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 7122 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 7123 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 7124 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg); 7125 init_waitqueue_head(&ioa_cfg->reset_wait_q); 7126 ioa_cfg->sdt_state = INACTIVE; 7127 if (ipr_enable_cache) 7128 ioa_cfg->cache_state = CACHE_ENABLED; 7129 else 7130 ioa_cfg->cache_state = CACHE_DISABLED; 7131 7132 ipr_initialize_bus_attr(ioa_cfg); 7133 7134 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 7135 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 7136 host->max_channel = IPR_MAX_BUS_TO_SCAN; 7137 host->unique_id = host->host_no; 7138 host->max_cmd_len = IPR_MAX_CDB_LEN; 7139 pci_set_drvdata(pdev, ioa_cfg); 7140 7141 p = &ioa_cfg->chip_cfg->regs; 7142 t = &ioa_cfg->regs; 7143 base = ioa_cfg->hdw_dma_regs; 7144 7145 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 7146 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 7147 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 7148 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 7149 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 7150 t->ioarrin_reg = base + p->ioarrin_reg; 7151 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 7152 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 7153 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 7154} 7155 7156/** 7157 * ipr_get_chip_cfg - Find adapter chip configuration 7158 * @dev_id: PCI device id struct 7159 * 7160 * Return value: 7161 * ptr to chip config on success / NULL on failure 7162 **/ 7163static const struct ipr_chip_cfg_t * __devinit 7164ipr_get_chip_cfg(const struct pci_device_id *dev_id) 7165{ 7166 int i; 7167 7168 if (dev_id->driver_data) 7169 return (const struct ipr_chip_cfg_t *)dev_id->driver_data; 7170 7171 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 7172 if (ipr_chip[i].vendor == dev_id->vendor && 7173 ipr_chip[i].device == dev_id->device) 7174 return ipr_chip[i].cfg; 7175 return NULL; 7176} 7177 7178/** 7179 * ipr_probe_ioa - Allocates memory and does first stage of initialization 7180 * @pdev: PCI device struct 7181 * @dev_id: PCI device id struct 7182 * 7183 * Return value: 7184 * 0 on success / non-zero on failure 7185 **/ 7186static int __devinit ipr_probe_ioa(struct pci_dev *pdev, 7187 const struct pci_device_id *dev_id) 7188{ 7189 struct ipr_ioa_cfg *ioa_cfg; 7190 struct Scsi_Host *host; 7191 unsigned long ipr_regs_pci; 7192 void __iomem *ipr_regs; 7193 int rc = PCIBIOS_SUCCESSFUL; 7194 volatile u32 mask, uproc; 7195 7196 ENTER; 7197 7198 if ((rc = pci_enable_device(pdev))) { 7199 dev_err(&pdev->dev, "Cannot enable adapter\n"); 7200 goto out; 7201 } 7202 7203 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 7204 7205 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 7206 7207 if (!host) { 7208 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 7209 rc = -ENOMEM; 7210 goto out_disable; 7211 } 7212 7213 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 7214 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 7215 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, 7216 sata_port_info.flags, &ipr_sata_ops); 7217 7218 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id); 7219 7220 if (!ioa_cfg->chip_cfg) { 7221 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 7222 dev_id->vendor, dev_id->device); 7223 goto out_scsi_host_put; 7224 } 7225 7226 ipr_regs_pci = pci_resource_start(pdev, 0); 7227 7228 rc = pci_request_regions(pdev, IPR_NAME); 7229 if (rc < 0) { 7230 dev_err(&pdev->dev, 7231 "Couldn't register memory range of registers\n"); 7232 goto out_scsi_host_put; 7233 } 7234 7235 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0)); 7236 7237 if (!ipr_regs) { 7238 dev_err(&pdev->dev, 7239 "Couldn't map memory range of registers\n"); 7240 rc = -ENOMEM; 7241 goto out_release_regions; 7242 } 7243 7244 ioa_cfg->hdw_dma_regs = ipr_regs; 7245 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 7246 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 7247 7248 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 7249 7250 pci_set_master(pdev); 7251 7252 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 7253 if (rc < 0) { 7254 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); 7255 goto cleanup_nomem; 7256 } 7257 7258 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 7259 ioa_cfg->chip_cfg->cache_line_size); 7260 7261 if (rc != PCIBIOS_SUCCESSFUL) { 7262 dev_err(&pdev->dev, "Write of cache line size failed\n"); 7263 rc = -EIO; 7264 goto cleanup_nomem; 7265 } 7266 7267 /* Save away PCI config space for use following IOA reset */ 7268 rc = pci_save_state(pdev); 7269 7270 if (rc != PCIBIOS_SUCCESSFUL) { 7271 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 7272 rc = -EIO; 7273 goto cleanup_nomem; 7274 } 7275 7276 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 7277 goto cleanup_nomem; 7278 7279 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 7280 goto cleanup_nomem; 7281 7282 rc = ipr_alloc_mem(ioa_cfg); 7283 if (rc < 0) { 7284 dev_err(&pdev->dev, 7285 "Couldn't allocate enough memory for device driver!\n"); 7286 goto cleanup_nomem; 7287 } 7288 7289 /* 7290 * If HRRQ updated interrupt is not masked, or reset alert is set, 7291 * the card is in an unknown state and needs a hard reset 7292 */ 7293 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7294 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg); 7295 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 7296 ioa_cfg->needs_hard_reset = 1; 7297 7298 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 7299 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg); 7300 7301 if (rc) { 7302 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 7303 pdev->irq, rc); 7304 goto cleanup_nolog; 7305 } 7306 7307 spin_lock(&ipr_driver_lock); 7308 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 7309 spin_unlock(&ipr_driver_lock); 7310 7311 LEAVE; 7312out: 7313 return rc; 7314 7315cleanup_nolog: 7316 ipr_free_mem(ioa_cfg); 7317cleanup_nomem: 7318 iounmap(ipr_regs); 7319out_release_regions: 7320 pci_release_regions(pdev); 7321out_scsi_host_put: 7322 scsi_host_put(host); 7323out_disable: 7324 pci_disable_device(pdev); 7325 goto out; 7326} 7327 7328/** 7329 * ipr_scan_vsets - Scans for VSET devices 7330 * @ioa_cfg: ioa config struct 7331 * 7332 * Description: Since the VSET resources do not follow SAM in that we can have 7333 * sparse LUNs with no LUN 0, we have to scan for these ourselves. 7334 * 7335 * Return value: 7336 * none 7337 **/ 7338static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) 7339{ 7340 int target, lun; 7341 7342 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) 7343 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) 7344 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); 7345} 7346 7347/** 7348 * ipr_initiate_ioa_bringdown - Bring down an adapter 7349 * @ioa_cfg: ioa config struct 7350 * @shutdown_type: shutdown type 7351 * 7352 * Description: This function will initiate bringing down the adapter. 7353 * This consists of issuing an IOA shutdown to the adapter 7354 * to flush the cache, and running BIST. 7355 * If the caller needs to wait on the completion of the reset, 7356 * the caller must sleep on the reset_wait_q. 7357 * 7358 * Return value: 7359 * none 7360 **/ 7361static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 7362 enum ipr_shutdown_type shutdown_type) 7363{ 7364 ENTER; 7365 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 7366 ioa_cfg->sdt_state = ABORT_DUMP; 7367 ioa_cfg->reset_retries = 0; 7368 ioa_cfg->in_ioa_bringdown = 1; 7369 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 7370 LEAVE; 7371} 7372 7373/** 7374 * __ipr_remove - Remove a single adapter 7375 * @pdev: pci device struct 7376 * 7377 * Adapter hot plug remove entry point. 7378 * 7379 * Return value: 7380 * none 7381 **/ 7382static void __ipr_remove(struct pci_dev *pdev) 7383{ 7384 unsigned long host_lock_flags = 0; 7385 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7386 ENTER; 7387 7388 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7389 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 7390 7391 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7392 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7393 flush_scheduled_work(); 7394 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7395 7396 spin_lock(&ipr_driver_lock); 7397 list_del(&ioa_cfg->queue); 7398 spin_unlock(&ipr_driver_lock); 7399 7400 if (ioa_cfg->sdt_state == ABORT_DUMP) 7401 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 7402 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7403 7404 ipr_free_all_resources(ioa_cfg); 7405 7406 LEAVE; 7407} 7408 7409/** 7410 * ipr_remove - IOA hot plug remove entry point 7411 * @pdev: pci device struct 7412 * 7413 * Adapter hot plug remove entry point. 7414 * 7415 * Return value: 7416 * none 7417 **/ 7418static void ipr_remove(struct pci_dev *pdev) 7419{ 7420 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7421 7422 ENTER; 7423 7424 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7425 &ipr_trace_attr); 7426 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj, 7427 &ipr_dump_attr); 7428 scsi_remove_host(ioa_cfg->host); 7429 7430 __ipr_remove(pdev); 7431 7432 LEAVE; 7433} 7434 7435/** 7436 * ipr_probe - Adapter hot plug add entry point 7437 * 7438 * Return value: 7439 * 0 on success / non-zero on failure 7440 **/ 7441static int __devinit ipr_probe(struct pci_dev *pdev, 7442 const struct pci_device_id *dev_id) 7443{ 7444 struct ipr_ioa_cfg *ioa_cfg; 7445 int rc; 7446 7447 rc = ipr_probe_ioa(pdev, dev_id); 7448 7449 if (rc) 7450 return rc; 7451 7452 ioa_cfg = pci_get_drvdata(pdev); 7453 rc = ipr_probe_ioa_part2(ioa_cfg); 7454 7455 if (rc) { 7456 __ipr_remove(pdev); 7457 return rc; 7458 } 7459 7460 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 7461 7462 if (rc) { 7463 __ipr_remove(pdev); 7464 return rc; 7465 } 7466 7467 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7468 &ipr_trace_attr); 7469 7470 if (rc) { 7471 scsi_remove_host(ioa_cfg->host); 7472 __ipr_remove(pdev); 7473 return rc; 7474 } 7475 7476 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj, 7477 &ipr_dump_attr); 7478 7479 if (rc) { 7480 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7481 &ipr_trace_attr); 7482 scsi_remove_host(ioa_cfg->host); 7483 __ipr_remove(pdev); 7484 return rc; 7485 } 7486 7487 scsi_scan_host(ioa_cfg->host); 7488 ipr_scan_vsets(ioa_cfg); 7489 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); 7490 ioa_cfg->allow_ml_add_del = 1; 7491 ioa_cfg->host->max_channel = IPR_VSET_BUS; 7492 schedule_work(&ioa_cfg->work_q); 7493 return 0; 7494} 7495 7496/** 7497 * ipr_shutdown - Shutdown handler. 7498 * @pdev: pci device struct 7499 * 7500 * This function is invoked upon system shutdown/reboot. It will issue 7501 * an adapter shutdown to the adapter to flush the write cache. 7502 * 7503 * Return value: 7504 * none 7505 **/ 7506static void ipr_shutdown(struct pci_dev *pdev) 7507{ 7508 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7509 unsigned long lock_flags = 0; 7510 7511 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 7512 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 7513 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 7514 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7515} 7516 7517static struct pci_device_id ipr_pci_table[] __devinitdata = { 7518 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7519 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 7520 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 7521 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7522 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 7523 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 7524 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7525 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 7526 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 7527 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7528 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 7529 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 7530 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7531 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 7532 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 7533 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7534 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 7535 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 7536 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7537 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 7538 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 7539 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7540 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 7541 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 7542 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7543 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 7544 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 7545 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7546 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 7547 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 7548 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7549 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 7550 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 7551 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7552 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 7553 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 7554 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7555 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 7556 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 7557 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7558 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 7559 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 7560 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7561 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B8, 7562 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 7563 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7564 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 7565 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 7566 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 7567 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 7568 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, 7569 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7570 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 7571 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, 7572 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7573 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 7574 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, 7575 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7576 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 7577 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, 7578 { } 7579}; 7580MODULE_DEVICE_TABLE(pci, ipr_pci_table); 7581 7582static struct pci_error_handlers ipr_err_handler = { 7583 .error_detected = ipr_pci_error_detected, 7584 .slot_reset = ipr_pci_slot_reset, 7585}; 7586 7587static struct pci_driver ipr_driver = { 7588 .name = IPR_NAME, 7589 .id_table = ipr_pci_table, 7590 .probe = ipr_probe, 7591 .remove = ipr_remove, 7592 .shutdown = ipr_shutdown, 7593 .err_handler = &ipr_err_handler, 7594}; 7595 7596/** 7597 * ipr_init - Module entry point 7598 * 7599 * Return value: 7600 * 0 on success / negative value on failure 7601 **/ 7602static int __init ipr_init(void) 7603{ 7604 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 7605 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 7606 7607 return pci_register_driver(&ipr_driver); 7608} 7609 7610/** 7611 * ipr_exit - Module unload 7612 * 7613 * Module unload entry point. 7614 * 7615 * Return value: 7616 * none 7617 **/ 7618static void __exit ipr_exit(void) 7619{ 7620 pci_unregister_driver(&ipr_driver); 7621} 7622 7623module_init(ipr_init); 7624module_exit(ipr_exit); 7625