ipr.c revision 120bda35ff8514c937dac6d4e5c7dc6c01c699ac
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 return 0; 600 601 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 602 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 603 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 604 return -EIO; 605 } 606 607 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; 608 return 0; 609} 610 611/** 612 * ipr_set_pcix_cmd_reg - Setup PCI-X command register 613 * @ioa_cfg: ioa config struct 614 * 615 * Return value: 616 * 0 on success / -EIO on failure 617 **/ 618static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 619{ 620 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 621 622 if (pcix_cmd_reg) { 623 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 624 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 625 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); 626 return -EIO; 627 } 628 } 629 630 return 0; 631} 632 633/** 634 * ipr_sata_eh_done - done function for aborted SATA commands 635 * @ipr_cmd: ipr command struct 636 * 637 * This function is invoked for ops generated to SATA 638 * devices which are being aborted. 639 * 640 * Return value: 641 * none 642 **/ 643static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd) 644{ 645 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 646 struct ata_queued_cmd *qc = ipr_cmd->qc; 647 struct ipr_sata_port *sata_port = qc->ap->private_data; 648 649 qc->err_mask |= AC_ERR_OTHER; 650 sata_port->ioasa.status |= ATA_BUSY; 651 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 652 ata_qc_complete(qc); 653} 654 655/** 656 * ipr_scsi_eh_done - mid-layer done function for aborted ops 657 * @ipr_cmd: ipr command struct 658 * 659 * This function is invoked by the interrupt handler for 660 * ops generated by the SCSI mid-layer which are being aborted. 661 * 662 * Return value: 663 * none 664 **/ 665static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 666{ 667 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 668 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 669 670 scsi_cmd->result |= (DID_ERROR << 16); 671 672 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 673 scsi_cmd->scsi_done(scsi_cmd); 674 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 675} 676 677/** 678 * ipr_fail_all_ops - Fails all outstanding ops. 679 * @ioa_cfg: ioa config struct 680 * 681 * This function fails all outstanding ops. 682 * 683 * Return value: 684 * none 685 **/ 686static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) 687{ 688 struct ipr_cmnd *ipr_cmd, *temp; 689 690 ENTER; 691 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) { 692 list_del(&ipr_cmd->queue); 693 694 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); 695 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID); 696 697 if (ipr_cmd->scsi_cmd) 698 ipr_cmd->done = ipr_scsi_eh_done; 699 else if (ipr_cmd->qc) 700 ipr_cmd->done = ipr_sata_eh_done; 701 702 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET); 703 del_timer(&ipr_cmd->timer); 704 ipr_cmd->done(ipr_cmd); 705 } 706 707 LEAVE; 708} 709 710/** 711 * ipr_do_req - Send driver initiated requests. 712 * @ipr_cmd: ipr command struct 713 * @done: done function 714 * @timeout_func: timeout function 715 * @timeout: timeout value 716 * 717 * This function sends the specified command to the adapter with the 718 * timeout given. The done function is invoked on command completion. 719 * 720 * Return value: 721 * none 722 **/ 723static void ipr_do_req(struct ipr_cmnd *ipr_cmd, 724 void (*done) (struct ipr_cmnd *), 725 void (*timeout_func) (struct ipr_cmnd *), u32 timeout) 726{ 727 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 728 729 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 730 731 ipr_cmd->done = done; 732 733 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 734 ipr_cmd->timer.expires = jiffies + timeout; 735 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func; 736 737 add_timer(&ipr_cmd->timer); 738 739 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); 740 741 mb(); 742 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 743 ioa_cfg->regs.ioarrin_reg); 744} 745 746/** 747 * ipr_internal_cmd_done - Op done function for an internally generated op. 748 * @ipr_cmd: ipr command struct 749 * 750 * This function is the op done function for an internally generated, 751 * blocking op. It simply wakes the sleeping thread. 752 * 753 * Return value: 754 * none 755 **/ 756static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) 757{ 758 if (ipr_cmd->sibling) 759 ipr_cmd->sibling = NULL; 760 else 761 complete(&ipr_cmd->completion); 762} 763 764/** 765 * ipr_send_blocking_cmd - Send command and sleep on its completion. 766 * @ipr_cmd: ipr command struct 767 * @timeout_func: function to invoke if command times out 768 * @timeout: timeout 769 * 770 * Return value: 771 * none 772 **/ 773static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, 774 void (*timeout_func) (struct ipr_cmnd *ipr_cmd), 775 u32 timeout) 776{ 777 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 778 779 init_completion(&ipr_cmd->completion); 780 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); 781 782 spin_unlock_irq(ioa_cfg->host->host_lock); 783 wait_for_completion(&ipr_cmd->completion); 784 spin_lock_irq(ioa_cfg->host->host_lock); 785} 786 787/** 788 * ipr_send_hcam - Send an HCAM to the adapter. 789 * @ioa_cfg: ioa config struct 790 * @type: HCAM type 791 * @hostrcb: hostrcb struct 792 * 793 * This function will send a Host Controlled Async command to the adapter. 794 * If HCAMs are currently not allowed to be issued to the adapter, it will 795 * place the hostrcb on the free queue. 796 * 797 * Return value: 798 * none 799 **/ 800static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, 801 struct ipr_hostrcb *hostrcb) 802{ 803 struct ipr_cmnd *ipr_cmd; 804 struct ipr_ioarcb *ioarcb; 805 806 if (ioa_cfg->allow_cmds) { 807 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 808 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 809 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); 810 811 ipr_cmd->u.hostrcb = hostrcb; 812 ioarcb = &ipr_cmd->ioarcb; 813 814 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 815 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; 816 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; 817 ioarcb->cmd_pkt.cdb[1] = type; 818 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; 819 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; 820 821 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam)); 822 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 823 ipr_cmd->ioadl[0].flags_and_data_len = 824 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam)); 825 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma); 826 827 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) 828 ipr_cmd->done = ipr_process_ccn; 829 else 830 ipr_cmd->done = ipr_process_error; 831 832 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); 833 834 mb(); 835 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 836 ioa_cfg->regs.ioarrin_reg); 837 } else { 838 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 839 } 840} 841 842/** 843 * ipr_init_res_entry - Initialize a resource entry struct. 844 * @res: resource entry struct 845 * 846 * Return value: 847 * none 848 **/ 849static void ipr_init_res_entry(struct ipr_resource_entry *res) 850{ 851 res->needs_sync_complete = 0; 852 res->in_erp = 0; 853 res->add_to_ml = 0; 854 res->del_from_ml = 0; 855 res->resetting_device = 0; 856 res->sdev = NULL; 857 res->sata_port = NULL; 858} 859 860/** 861 * ipr_handle_config_change - Handle a config change from the adapter 862 * @ioa_cfg: ioa config struct 863 * @hostrcb: hostrcb 864 * 865 * Return value: 866 * none 867 **/ 868static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, 869 struct ipr_hostrcb *hostrcb) 870{ 871 struct ipr_resource_entry *res = NULL; 872 struct ipr_config_table_entry *cfgte; 873 u32 is_ndn = 1; 874 875 cfgte = &hostrcb->hcam.u.ccn.cfgte; 876 877 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 878 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr, 879 sizeof(cfgte->res_addr))) { 880 is_ndn = 0; 881 break; 882 } 883 } 884 885 if (is_ndn) { 886 if (list_empty(&ioa_cfg->free_res_q)) { 887 ipr_send_hcam(ioa_cfg, 888 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 889 hostrcb); 890 return; 891 } 892 893 res = list_entry(ioa_cfg->free_res_q.next, 894 struct ipr_resource_entry, queue); 895 896 list_del(&res->queue); 897 ipr_init_res_entry(res); 898 list_add_tail(&res->queue, &ioa_cfg->used_res_q); 899 } 900 901 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 902 903 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { 904 if (res->sdev) { 905 res->del_from_ml = 1; 906 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE; 907 if (ioa_cfg->allow_ml_add_del) 908 schedule_work(&ioa_cfg->work_q); 909 } else 910 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 911 } else if (!res->sdev) { 912 res->add_to_ml = 1; 913 if (ioa_cfg->allow_ml_add_del) 914 schedule_work(&ioa_cfg->work_q); 915 } 916 917 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 918} 919 920/** 921 * ipr_process_ccn - Op done function for a CCN. 922 * @ipr_cmd: ipr command struct 923 * 924 * This function is the op done function for a configuration 925 * change notification host controlled async from the adapter. 926 * 927 * Return value: 928 * none 929 **/ 930static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) 931{ 932 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 933 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 934 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 935 936 list_del(&hostrcb->queue); 937 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 938 939 if (ioasc) { 940 if (ioasc != IPR_IOASC_IOA_WAS_RESET) 941 dev_err(&ioa_cfg->pdev->dev, 942 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 943 944 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 945 } else { 946 ipr_handle_config_change(ioa_cfg, hostrcb); 947 } 948} 949 950/** 951 * ipr_log_vpd - Log the passed VPD to the error log. 952 * @vpd: vendor/product id/sn struct 953 * 954 * Return value: 955 * none 956 **/ 957static void ipr_log_vpd(struct ipr_vpd *vpd) 958{ 959 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN 960 + IPR_SERIAL_NUM_LEN]; 961 962 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 963 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id, 964 IPR_PROD_ID_LEN); 965 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; 966 ipr_err("Vendor/Product ID: %s\n", buffer); 967 968 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN); 969 buffer[IPR_SERIAL_NUM_LEN] = '\0'; 970 ipr_err(" Serial Number: %s\n", buffer); 971} 972 973/** 974 * ipr_log_ext_vpd - Log the passed extended VPD to the error log. 975 * @vpd: vendor/product id/sn/wwn struct 976 * 977 * Return value: 978 * none 979 **/ 980static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd) 981{ 982 ipr_log_vpd(&vpd->vpd); 983 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]), 984 be32_to_cpu(vpd->wwid[1])); 985} 986 987/** 988 * ipr_log_enhanced_cache_error - Log a cache error. 989 * @ioa_cfg: ioa config struct 990 * @hostrcb: hostrcb struct 991 * 992 * Return value: 993 * none 994 **/ 995static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg, 996 struct ipr_hostrcb *hostrcb) 997{ 998 struct ipr_hostrcb_type_12_error *error = 999 &hostrcb->hcam.u.error.u.type_12_error; 1000 1001 ipr_err("-----Current Configuration-----\n"); 1002 ipr_err("Cache Directory Card Information:\n"); 1003 ipr_log_ext_vpd(&error->ioa_vpd); 1004 ipr_err("Adapter Card Information:\n"); 1005 ipr_log_ext_vpd(&error->cfc_vpd); 1006 1007 ipr_err("-----Expected Configuration-----\n"); 1008 ipr_err("Cache Directory Card Information:\n"); 1009 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd); 1010 ipr_err("Adapter Card Information:\n"); 1011 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd); 1012 1013 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1014 be32_to_cpu(error->ioa_data[0]), 1015 be32_to_cpu(error->ioa_data[1]), 1016 be32_to_cpu(error->ioa_data[2])); 1017} 1018 1019/** 1020 * ipr_log_cache_error - Log a cache error. 1021 * @ioa_cfg: ioa config struct 1022 * @hostrcb: hostrcb struct 1023 * 1024 * Return value: 1025 * none 1026 **/ 1027static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1028 struct ipr_hostrcb *hostrcb) 1029{ 1030 struct ipr_hostrcb_type_02_error *error = 1031 &hostrcb->hcam.u.error.u.type_02_error; 1032 1033 ipr_err("-----Current Configuration-----\n"); 1034 ipr_err("Cache Directory Card Information:\n"); 1035 ipr_log_vpd(&error->ioa_vpd); 1036 ipr_err("Adapter Card Information:\n"); 1037 ipr_log_vpd(&error->cfc_vpd); 1038 1039 ipr_err("-----Expected Configuration-----\n"); 1040 ipr_err("Cache Directory Card Information:\n"); 1041 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd); 1042 ipr_err("Adapter Card Information:\n"); 1043 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd); 1044 1045 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1046 be32_to_cpu(error->ioa_data[0]), 1047 be32_to_cpu(error->ioa_data[1]), 1048 be32_to_cpu(error->ioa_data[2])); 1049} 1050 1051/** 1052 * ipr_log_enhanced_config_error - Log a configuration error. 1053 * @ioa_cfg: ioa config struct 1054 * @hostrcb: hostrcb struct 1055 * 1056 * Return value: 1057 * none 1058 **/ 1059static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg, 1060 struct ipr_hostrcb *hostrcb) 1061{ 1062 int errors_logged, i; 1063 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry; 1064 struct ipr_hostrcb_type_13_error *error; 1065 1066 error = &hostrcb->hcam.u.error.u.type_13_error; 1067 errors_logged = be32_to_cpu(error->errors_logged); 1068 1069 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1070 be32_to_cpu(error->errors_detected), errors_logged); 1071 1072 dev_entry = error->dev; 1073 1074 for (i = 0; i < errors_logged; i++, dev_entry++) { 1075 ipr_err_separator; 1076 1077 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1078 ipr_log_ext_vpd(&dev_entry->vpd); 1079 1080 ipr_err("-----New Device Information-----\n"); 1081 ipr_log_ext_vpd(&dev_entry->new_vpd); 1082 1083 ipr_err("Cache Directory Card Information:\n"); 1084 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1085 1086 ipr_err("Adapter Card Information:\n"); 1087 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1088 } 1089} 1090 1091/** 1092 * ipr_log_config_error - Log a configuration error. 1093 * @ioa_cfg: ioa config struct 1094 * @hostrcb: hostrcb struct 1095 * 1096 * Return value: 1097 * none 1098 **/ 1099static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, 1100 struct ipr_hostrcb *hostrcb) 1101{ 1102 int errors_logged, i; 1103 struct ipr_hostrcb_device_data_entry *dev_entry; 1104 struct ipr_hostrcb_type_03_error *error; 1105 1106 error = &hostrcb->hcam.u.error.u.type_03_error; 1107 errors_logged = be32_to_cpu(error->errors_logged); 1108 1109 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1110 be32_to_cpu(error->errors_detected), errors_logged); 1111 1112 dev_entry = error->dev; 1113 1114 for (i = 0; i < errors_logged; i++, dev_entry++) { 1115 ipr_err_separator; 1116 1117 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1118 ipr_log_vpd(&dev_entry->vpd); 1119 1120 ipr_err("-----New Device Information-----\n"); 1121 ipr_log_vpd(&dev_entry->new_vpd); 1122 1123 ipr_err("Cache Directory Card Information:\n"); 1124 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd); 1125 1126 ipr_err("Adapter Card Information:\n"); 1127 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd); 1128 1129 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", 1130 be32_to_cpu(dev_entry->ioa_data[0]), 1131 be32_to_cpu(dev_entry->ioa_data[1]), 1132 be32_to_cpu(dev_entry->ioa_data[2]), 1133 be32_to_cpu(dev_entry->ioa_data[3]), 1134 be32_to_cpu(dev_entry->ioa_data[4])); 1135 } 1136} 1137 1138/** 1139 * ipr_log_enhanced_array_error - Log an array configuration error. 1140 * @ioa_cfg: ioa config struct 1141 * @hostrcb: hostrcb struct 1142 * 1143 * Return value: 1144 * none 1145 **/ 1146static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg, 1147 struct ipr_hostrcb *hostrcb) 1148{ 1149 int i, num_entries; 1150 struct ipr_hostrcb_type_14_error *error; 1151 struct ipr_hostrcb_array_data_entry_enhanced *array_entry; 1152 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1153 1154 error = &hostrcb->hcam.u.error.u.type_14_error; 1155 1156 ipr_err_separator; 1157 1158 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1159 error->protection_level, 1160 ioa_cfg->host->host_no, 1161 error->last_func_vset_res_addr.bus, 1162 error->last_func_vset_res_addr.target, 1163 error->last_func_vset_res_addr.lun); 1164 1165 ipr_err_separator; 1166 1167 array_entry = error->array_member; 1168 num_entries = min_t(u32, be32_to_cpu(error->num_entries), 1169 sizeof(error->array_member)); 1170 1171 for (i = 0; i < num_entries; i++, array_entry++) { 1172 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1173 continue; 1174 1175 if (be32_to_cpu(error->exposed_mode_adn) == i) 1176 ipr_err("Exposed Array Member %d:\n", i); 1177 else 1178 ipr_err("Array Member %d:\n", i); 1179 1180 ipr_log_ext_vpd(&array_entry->vpd); 1181 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1182 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1183 "Expected Location"); 1184 1185 ipr_err_separator; 1186 } 1187} 1188 1189/** 1190 * ipr_log_array_error - Log an array configuration error. 1191 * @ioa_cfg: ioa config struct 1192 * @hostrcb: hostrcb struct 1193 * 1194 * Return value: 1195 * none 1196 **/ 1197static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, 1198 struct ipr_hostrcb *hostrcb) 1199{ 1200 int i; 1201 struct ipr_hostrcb_type_04_error *error; 1202 struct ipr_hostrcb_array_data_entry *array_entry; 1203 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1204 1205 error = &hostrcb->hcam.u.error.u.type_04_error; 1206 1207 ipr_err_separator; 1208 1209 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1210 error->protection_level, 1211 ioa_cfg->host->host_no, 1212 error->last_func_vset_res_addr.bus, 1213 error->last_func_vset_res_addr.target, 1214 error->last_func_vset_res_addr.lun); 1215 1216 ipr_err_separator; 1217 1218 array_entry = error->array_member; 1219 1220 for (i = 0; i < 18; i++) { 1221 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1222 continue; 1223 1224 if (be32_to_cpu(error->exposed_mode_adn) == i) 1225 ipr_err("Exposed Array Member %d:\n", i); 1226 else 1227 ipr_err("Array Member %d:\n", i); 1228 1229 ipr_log_vpd(&array_entry->vpd); 1230 1231 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1232 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1233 "Expected Location"); 1234 1235 ipr_err_separator; 1236 1237 if (i == 9) 1238 array_entry = error->array_member2; 1239 else 1240 array_entry++; 1241 } 1242} 1243 1244/** 1245 * ipr_log_hex_data - Log additional hex IOA error data. 1246 * @ioa_cfg: ioa config struct 1247 * @data: IOA error data 1248 * @len: data length 1249 * 1250 * Return value: 1251 * none 1252 **/ 1253static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len) 1254{ 1255 int i; 1256 1257 if (len == 0) 1258 return; 1259 1260 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 1261 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP); 1262 1263 for (i = 0; i < len / 4; i += 4) { 1264 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 1265 be32_to_cpu(data[i]), 1266 be32_to_cpu(data[i+1]), 1267 be32_to_cpu(data[i+2]), 1268 be32_to_cpu(data[i+3])); 1269 } 1270} 1271 1272/** 1273 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error. 1274 * @ioa_cfg: ioa config struct 1275 * @hostrcb: hostrcb struct 1276 * 1277 * Return value: 1278 * none 1279 **/ 1280static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1281 struct ipr_hostrcb *hostrcb) 1282{ 1283 struct ipr_hostrcb_type_17_error *error; 1284 1285 error = &hostrcb->hcam.u.error.u.type_17_error; 1286 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1287 1288 ipr_err("%s\n", error->failure_reason); 1289 ipr_err("Remote Adapter VPD:\n"); 1290 ipr_log_ext_vpd(&error->vpd); 1291 ipr_log_hex_data(ioa_cfg, error->data, 1292 be32_to_cpu(hostrcb->hcam.length) - 1293 (offsetof(struct ipr_hostrcb_error, u) + 1294 offsetof(struct ipr_hostrcb_type_17_error, data))); 1295} 1296 1297/** 1298 * ipr_log_dual_ioa_error - Log a dual adapter error. 1299 * @ioa_cfg: ioa config struct 1300 * @hostrcb: hostrcb struct 1301 * 1302 * Return value: 1303 * none 1304 **/ 1305static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1306 struct ipr_hostrcb *hostrcb) 1307{ 1308 struct ipr_hostrcb_type_07_error *error; 1309 1310 error = &hostrcb->hcam.u.error.u.type_07_error; 1311 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1312 1313 ipr_err("%s\n", error->failure_reason); 1314 ipr_err("Remote Adapter VPD:\n"); 1315 ipr_log_vpd(&error->vpd); 1316 ipr_log_hex_data(ioa_cfg, error->data, 1317 be32_to_cpu(hostrcb->hcam.length) - 1318 (offsetof(struct ipr_hostrcb_error, u) + 1319 offsetof(struct ipr_hostrcb_type_07_error, data))); 1320} 1321 1322static const struct { 1323 u8 active; 1324 char *desc; 1325} path_active_desc[] = { 1326 { IPR_PATH_NO_INFO, "Path" }, 1327 { IPR_PATH_ACTIVE, "Active path" }, 1328 { IPR_PATH_NOT_ACTIVE, "Inactive path" } 1329}; 1330 1331static const struct { 1332 u8 state; 1333 char *desc; 1334} path_state_desc[] = { 1335 { IPR_PATH_STATE_NO_INFO, "has no path state information available" }, 1336 { IPR_PATH_HEALTHY, "is healthy" }, 1337 { IPR_PATH_DEGRADED, "is degraded" }, 1338 { IPR_PATH_FAILED, "is failed" } 1339}; 1340 1341/** 1342 * ipr_log_fabric_path - Log a fabric path error 1343 * @hostrcb: hostrcb struct 1344 * @fabric: fabric descriptor 1345 * 1346 * Return value: 1347 * none 1348 **/ 1349static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb, 1350 struct ipr_hostrcb_fabric_desc *fabric) 1351{ 1352 int i, j; 1353 u8 path_state = fabric->path_state; 1354 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 1355 u8 state = path_state & IPR_PATH_STATE_MASK; 1356 1357 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 1358 if (path_active_desc[i].active != active) 1359 continue; 1360 1361 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 1362 if (path_state_desc[j].state != state) 1363 continue; 1364 1365 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) { 1366 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n", 1367 path_active_desc[i].desc, path_state_desc[j].desc, 1368 fabric->ioa_port); 1369 } else if (fabric->cascaded_expander == 0xff) { 1370 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n", 1371 path_active_desc[i].desc, path_state_desc[j].desc, 1372 fabric->ioa_port, fabric->phy); 1373 } else if (fabric->phy == 0xff) { 1374 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n", 1375 path_active_desc[i].desc, path_state_desc[j].desc, 1376 fabric->ioa_port, fabric->cascaded_expander); 1377 } else { 1378 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n", 1379 path_active_desc[i].desc, path_state_desc[j].desc, 1380 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1381 } 1382 return; 1383 } 1384 } 1385 1386 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state, 1387 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1388} 1389 1390static const struct { 1391 u8 type; 1392 char *desc; 1393} path_type_desc[] = { 1394 { IPR_PATH_CFG_IOA_PORT, "IOA port" }, 1395 { IPR_PATH_CFG_EXP_PORT, "Expander port" }, 1396 { IPR_PATH_CFG_DEVICE_PORT, "Device port" }, 1397 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" } 1398}; 1399 1400static const struct { 1401 u8 status; 1402 char *desc; 1403} path_status_desc[] = { 1404 { IPR_PATH_CFG_NO_PROB, "Functional" }, 1405 { IPR_PATH_CFG_DEGRADED, "Degraded" }, 1406 { IPR_PATH_CFG_FAILED, "Failed" }, 1407 { IPR_PATH_CFG_SUSPECT, "Suspect" }, 1408 { IPR_PATH_NOT_DETECTED, "Missing" }, 1409 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" } 1410}; 1411 1412static const char *link_rate[] = { 1413 "unknown", 1414 "disabled", 1415 "phy reset problem", 1416 "spinup hold", 1417 "port selector", 1418 "unknown", 1419 "unknown", 1420 "unknown", 1421 "1.5Gbps", 1422 "3.0Gbps", 1423 "unknown", 1424 "unknown", 1425 "unknown", 1426 "unknown", 1427 "unknown", 1428 "unknown" 1429}; 1430 1431/** 1432 * ipr_log_path_elem - Log a fabric path element. 1433 * @hostrcb: hostrcb struct 1434 * @cfg: fabric path element struct 1435 * 1436 * Return value: 1437 * none 1438 **/ 1439static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb, 1440 struct ipr_hostrcb_config_element *cfg) 1441{ 1442 int i, j; 1443 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 1444 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 1445 1446 if (type == IPR_PATH_CFG_NOT_EXIST) 1447 return; 1448 1449 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 1450 if (path_type_desc[i].type != type) 1451 continue; 1452 1453 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 1454 if (path_status_desc[j].status != status) 1455 continue; 1456 1457 if (type == IPR_PATH_CFG_IOA_PORT) { 1458 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n", 1459 path_status_desc[j].desc, path_type_desc[i].desc, 1460 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1461 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1462 } else { 1463 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) { 1464 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n", 1465 path_status_desc[j].desc, path_type_desc[i].desc, 1466 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 if (cfg->cascaded_expander == 0xff) { 1469 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, " 1470 "WWN=%08X%08X\n", path_status_desc[j].desc, 1471 path_type_desc[i].desc, cfg->phy, 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->phy == 0xff) { 1475 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, " 1476 "WWN=%08X%08X\n", path_status_desc[j].desc, 1477 path_type_desc[i].desc, cfg->cascaded_expander, 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 { 1481 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s " 1482 "WWN=%08X%08X\n", path_status_desc[j].desc, 1483 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy, 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 } 1487 } 1488 return; 1489 } 1490 } 1491 1492 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s " 1493 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy, 1494 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1495 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1496} 1497 1498/** 1499 * ipr_log_fabric_error - Log a fabric error. 1500 * @ioa_cfg: ioa config struct 1501 * @hostrcb: hostrcb struct 1502 * 1503 * Return value: 1504 * none 1505 **/ 1506static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 1507 struct ipr_hostrcb *hostrcb) 1508{ 1509 struct ipr_hostrcb_type_20_error *error; 1510 struct ipr_hostrcb_fabric_desc *fabric; 1511 struct ipr_hostrcb_config_element *cfg; 1512 int i, add_len; 1513 1514 error = &hostrcb->hcam.u.error.u.type_20_error; 1515 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1516 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 1517 1518 add_len = be32_to_cpu(hostrcb->hcam.length) - 1519 (offsetof(struct ipr_hostrcb_error, u) + 1520 offsetof(struct ipr_hostrcb_type_20_error, desc)); 1521 1522 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 1523 ipr_log_fabric_path(hostrcb, fabric); 1524 for_each_fabric_cfg(fabric, cfg) 1525 ipr_log_path_elem(hostrcb, cfg); 1526 1527 add_len -= be16_to_cpu(fabric->length); 1528 fabric = (struct ipr_hostrcb_fabric_desc *) 1529 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 1530 } 1531 1532 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len); 1533} 1534 1535/** 1536 * ipr_log_generic_error - Log an adapter error. 1537 * @ioa_cfg: ioa config struct 1538 * @hostrcb: hostrcb struct 1539 * 1540 * Return value: 1541 * none 1542 **/ 1543static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, 1544 struct ipr_hostrcb *hostrcb) 1545{ 1546 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data, 1547 be32_to_cpu(hostrcb->hcam.length)); 1548} 1549 1550/** 1551 * ipr_get_error - Find the specfied IOASC in the ipr_error_table. 1552 * @ioasc: IOASC 1553 * 1554 * This function will return the index of into the ipr_error_table 1555 * for the specified IOASC. If the IOASC is not in the table, 1556 * 0 will be returned, which points to the entry used for unknown errors. 1557 * 1558 * Return value: 1559 * index into the ipr_error_table 1560 **/ 1561static u32 ipr_get_error(u32 ioasc) 1562{ 1563 int i; 1564 1565 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) 1566 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK)) 1567 return i; 1568 1569 return 0; 1570} 1571 1572/** 1573 * ipr_handle_log_data - Log an adapter error. 1574 * @ioa_cfg: ioa config struct 1575 * @hostrcb: hostrcb struct 1576 * 1577 * This function logs an adapter error to the system. 1578 * 1579 * Return value: 1580 * none 1581 **/ 1582static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 1583 struct ipr_hostrcb *hostrcb) 1584{ 1585 u32 ioasc; 1586 int error_index; 1587 1588 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) 1589 return; 1590 1591 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) 1592 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); 1593 1594 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc); 1595 1596 if (ioasc == IPR_IOASC_BUS_WAS_RESET || 1597 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) { 1598 /* Tell the midlayer we had a bus reset so it will handle the UA properly */ 1599 scsi_report_bus_reset(ioa_cfg->host, 1600 hostrcb->hcam.u.error.failing_dev_res_addr.bus); 1601 } 1602 1603 error_index = ipr_get_error(ioasc); 1604 1605 if (!ipr_error_table[error_index].log_hcam) 1606 return; 1607 1608 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error); 1609 1610 /* Set indication we have logged an error */ 1611 ioa_cfg->errors_logged++; 1612 1613 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 1614 return; 1615 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw)) 1616 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw)); 1617 1618 switch (hostrcb->hcam.overlay_id) { 1619 case IPR_HOST_RCB_OVERLAY_ID_2: 1620 ipr_log_cache_error(ioa_cfg, hostrcb); 1621 break; 1622 case IPR_HOST_RCB_OVERLAY_ID_3: 1623 ipr_log_config_error(ioa_cfg, hostrcb); 1624 break; 1625 case IPR_HOST_RCB_OVERLAY_ID_4: 1626 case IPR_HOST_RCB_OVERLAY_ID_6: 1627 ipr_log_array_error(ioa_cfg, hostrcb); 1628 break; 1629 case IPR_HOST_RCB_OVERLAY_ID_7: 1630 ipr_log_dual_ioa_error(ioa_cfg, hostrcb); 1631 break; 1632 case IPR_HOST_RCB_OVERLAY_ID_12: 1633 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb); 1634 break; 1635 case IPR_HOST_RCB_OVERLAY_ID_13: 1636 ipr_log_enhanced_config_error(ioa_cfg, hostrcb); 1637 break; 1638 case IPR_HOST_RCB_OVERLAY_ID_14: 1639 case IPR_HOST_RCB_OVERLAY_ID_16: 1640 ipr_log_enhanced_array_error(ioa_cfg, hostrcb); 1641 break; 1642 case IPR_HOST_RCB_OVERLAY_ID_17: 1643 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb); 1644 break; 1645 case IPR_HOST_RCB_OVERLAY_ID_20: 1646 ipr_log_fabric_error(ioa_cfg, hostrcb); 1647 break; 1648 case IPR_HOST_RCB_OVERLAY_ID_1: 1649 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: 1650 default: 1651 ipr_log_generic_error(ioa_cfg, hostrcb); 1652 break; 1653 } 1654} 1655 1656/** 1657 * ipr_process_error - Op done function for an adapter error log. 1658 * @ipr_cmd: ipr command struct 1659 * 1660 * This function is the op done function for an error log host 1661 * controlled async from the adapter. It will log the error and 1662 * send the HCAM back to the adapter. 1663 * 1664 * Return value: 1665 * none 1666 **/ 1667static void ipr_process_error(struct ipr_cmnd *ipr_cmd) 1668{ 1669 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1670 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 1671 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 1672 1673 list_del(&hostrcb->queue); 1674 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 1675 1676 if (!ioasc) { 1677 ipr_handle_log_data(ioa_cfg, hostrcb); 1678 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) { 1679 dev_err(&ioa_cfg->pdev->dev, 1680 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 1681 } 1682 1683 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 1684} 1685 1686/** 1687 * ipr_timeout - An internally generated op has timed out. 1688 * @ipr_cmd: ipr command struct 1689 * 1690 * This function blocks host requests and initiates an 1691 * adapter reset. 1692 * 1693 * Return value: 1694 * none 1695 **/ 1696static void ipr_timeout(struct ipr_cmnd *ipr_cmd) 1697{ 1698 unsigned long lock_flags = 0; 1699 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1700 1701 ENTER; 1702 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1703 1704 ioa_cfg->errors_logged++; 1705 dev_err(&ioa_cfg->pdev->dev, 1706 "Adapter being reset due to command timeout.\n"); 1707 1708 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 1709 ioa_cfg->sdt_state = GET_DUMP; 1710 1711 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) 1712 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 1713 1714 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1715 LEAVE; 1716} 1717 1718/** 1719 * ipr_oper_timeout - Adapter timed out transitioning to operational 1720 * @ipr_cmd: ipr command struct 1721 * 1722 * This function blocks host requests and initiates an 1723 * adapter reset. 1724 * 1725 * Return value: 1726 * none 1727 **/ 1728static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) 1729{ 1730 unsigned long lock_flags = 0; 1731 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1732 1733 ENTER; 1734 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1735 1736 ioa_cfg->errors_logged++; 1737 dev_err(&ioa_cfg->pdev->dev, 1738 "Adapter timed out transitioning to operational.\n"); 1739 1740 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 1741 ioa_cfg->sdt_state = GET_DUMP; 1742 1743 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { 1744 if (ipr_fastfail) 1745 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 1746 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 1747 } 1748 1749 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1750 LEAVE; 1751} 1752 1753/** 1754 * ipr_reset_reload - Reset/Reload the IOA 1755 * @ioa_cfg: ioa config struct 1756 * @shutdown_type: shutdown type 1757 * 1758 * This function resets the adapter and re-initializes it. 1759 * This function assumes that all new host commands have been stopped. 1760 * Return value: 1761 * SUCCESS / FAILED 1762 **/ 1763static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg, 1764 enum ipr_shutdown_type shutdown_type) 1765{ 1766 if (!ioa_cfg->in_reset_reload) 1767 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 1768 1769 spin_unlock_irq(ioa_cfg->host->host_lock); 1770 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 1771 spin_lock_irq(ioa_cfg->host->host_lock); 1772 1773 /* If we got hit with a host reset while we were already resetting 1774 the adapter for some reason, and the reset failed. */ 1775 if (ioa_cfg->ioa_is_dead) { 1776 ipr_trace; 1777 return FAILED; 1778 } 1779 1780 return SUCCESS; 1781} 1782 1783/** 1784 * ipr_find_ses_entry - Find matching SES in SES table 1785 * @res: resource entry struct of SES 1786 * 1787 * Return value: 1788 * pointer to SES table entry / NULL on failure 1789 **/ 1790static const struct ipr_ses_table_entry * 1791ipr_find_ses_entry(struct ipr_resource_entry *res) 1792{ 1793 int i, j, matches; 1794 const struct ipr_ses_table_entry *ste = ipr_ses_table; 1795 1796 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { 1797 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { 1798 if (ste->compare_product_id_byte[j] == 'X') { 1799 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j]) 1800 matches++; 1801 else 1802 break; 1803 } else 1804 matches++; 1805 } 1806 1807 if (matches == IPR_PROD_ID_LEN) 1808 return ste; 1809 } 1810 1811 return NULL; 1812} 1813 1814/** 1815 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus 1816 * @ioa_cfg: ioa config struct 1817 * @bus: SCSI bus 1818 * @bus_width: bus width 1819 * 1820 * Return value: 1821 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz 1822 * For a 2-byte wide SCSI bus, the maximum transfer speed is 1823 * twice the maximum transfer rate (e.g. for a wide enabled bus, 1824 * max 160MHz = max 320MB/sec). 1825 **/ 1826static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) 1827{ 1828 struct ipr_resource_entry *res; 1829 const struct ipr_ses_table_entry *ste; 1830 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); 1831 1832 /* Loop through each config table entry in the config table buffer */ 1833 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1834 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data))) 1835 continue; 1836 1837 if (bus != res->cfgte.res_addr.bus) 1838 continue; 1839 1840 if (!(ste = ipr_find_ses_entry(res))) 1841 continue; 1842 1843 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); 1844 } 1845 1846 return max_xfer_rate; 1847} 1848 1849/** 1850 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA 1851 * @ioa_cfg: ioa config struct 1852 * @max_delay: max delay in micro-seconds to wait 1853 * 1854 * Waits for an IODEBUG ACK from the IOA, doing busy looping. 1855 * 1856 * Return value: 1857 * 0 on success / other on failure 1858 **/ 1859static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) 1860{ 1861 volatile u32 pcii_reg; 1862 int delay = 1; 1863 1864 /* Read interrupt reg until IOA signals IO Debug Acknowledge */ 1865 while (delay < max_delay) { 1866 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 1867 1868 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) 1869 return 0; 1870 1871 /* udelay cannot be used if delay is more than a few milliseconds */ 1872 if ((delay / 1000) > MAX_UDELAY_MS) 1873 mdelay(delay / 1000); 1874 else 1875 udelay(delay); 1876 1877 delay += delay; 1878 } 1879 return -EIO; 1880} 1881 1882/** 1883 * ipr_get_ldump_data_section - Dump IOA memory 1884 * @ioa_cfg: ioa config struct 1885 * @start_addr: adapter address to dump 1886 * @dest: destination kernel buffer 1887 * @length_in_words: length to dump in 4 byte words 1888 * 1889 * Return value: 1890 * 0 on success / -EIO on failure 1891 **/ 1892static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, 1893 u32 start_addr, 1894 __be32 *dest, u32 length_in_words) 1895{ 1896 volatile u32 temp_pcii_reg; 1897 int i, delay = 0; 1898 1899 /* Write IOA interrupt reg starting LDUMP state */ 1900 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), 1901 ioa_cfg->regs.set_uproc_interrupt_reg); 1902 1903 /* Wait for IO debug acknowledge */ 1904 if (ipr_wait_iodbg_ack(ioa_cfg, 1905 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { 1906 dev_err(&ioa_cfg->pdev->dev, 1907 "IOA dump long data transfer timeout\n"); 1908 return -EIO; 1909 } 1910 1911 /* Signal LDUMP interlocked - clear IO debug ack */ 1912 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1913 ioa_cfg->regs.clr_interrupt_reg); 1914 1915 /* Write Mailbox with starting address */ 1916 writel(start_addr, ioa_cfg->ioa_mailbox); 1917 1918 /* Signal address valid - clear IOA Reset alert */ 1919 writel(IPR_UPROCI_RESET_ALERT, 1920 ioa_cfg->regs.clr_uproc_interrupt_reg); 1921 1922 for (i = 0; i < length_in_words; i++) { 1923 /* Wait for IO debug acknowledge */ 1924 if (ipr_wait_iodbg_ack(ioa_cfg, 1925 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { 1926 dev_err(&ioa_cfg->pdev->dev, 1927 "IOA dump short data transfer timeout\n"); 1928 return -EIO; 1929 } 1930 1931 /* Read data from mailbox and increment destination pointer */ 1932 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); 1933 dest++; 1934 1935 /* For all but the last word of data, signal data received */ 1936 if (i < (length_in_words - 1)) { 1937 /* Signal dump data received - Clear IO debug Ack */ 1938 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1939 ioa_cfg->regs.clr_interrupt_reg); 1940 } 1941 } 1942 1943 /* Signal end of block transfer. Set reset alert then clear IO debug ack */ 1944 writel(IPR_UPROCI_RESET_ALERT, 1945 ioa_cfg->regs.set_uproc_interrupt_reg); 1946 1947 writel(IPR_UPROCI_IO_DEBUG_ALERT, 1948 ioa_cfg->regs.clr_uproc_interrupt_reg); 1949 1950 /* Signal dump data received - Clear IO debug Ack */ 1951 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1952 ioa_cfg->regs.clr_interrupt_reg); 1953 1954 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ 1955 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { 1956 temp_pcii_reg = 1957 readl(ioa_cfg->regs.sense_uproc_interrupt_reg); 1958 1959 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) 1960 return 0; 1961 1962 udelay(10); 1963 delay += 10; 1964 } 1965 1966 return 0; 1967} 1968 1969#ifdef CONFIG_SCSI_IPR_DUMP 1970/** 1971 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer 1972 * @ioa_cfg: ioa config struct 1973 * @pci_address: adapter address 1974 * @length: length of data to copy 1975 * 1976 * Copy data from PCI adapter to kernel buffer. 1977 * Note: length MUST be a 4 byte multiple 1978 * Return value: 1979 * 0 on success / other on failure 1980 **/ 1981static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, 1982 unsigned long pci_address, u32 length) 1983{ 1984 int bytes_copied = 0; 1985 int cur_len, rc, rem_len, rem_page_len; 1986 __be32 *page; 1987 unsigned long lock_flags = 0; 1988 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; 1989 1990 while (bytes_copied < length && 1991 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) { 1992 if (ioa_dump->page_offset >= PAGE_SIZE || 1993 ioa_dump->page_offset == 0) { 1994 page = (__be32 *)__get_free_page(GFP_ATOMIC); 1995 1996 if (!page) { 1997 ipr_trace; 1998 return bytes_copied; 1999 } 2000 2001 ioa_dump->page_offset = 0; 2002 ioa_dump->ioa_data[ioa_dump->next_page_index] = page; 2003 ioa_dump->next_page_index++; 2004 } else 2005 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; 2006 2007 rem_len = length - bytes_copied; 2008 rem_page_len = PAGE_SIZE - ioa_dump->page_offset; 2009 cur_len = min(rem_len, rem_page_len); 2010 2011 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2012 if (ioa_cfg->sdt_state == ABORT_DUMP) { 2013 rc = -EIO; 2014 } else { 2015 rc = ipr_get_ldump_data_section(ioa_cfg, 2016 pci_address + bytes_copied, 2017 &page[ioa_dump->page_offset / 4], 2018 (cur_len / sizeof(u32))); 2019 } 2020 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2021 2022 if (!rc) { 2023 ioa_dump->page_offset += cur_len; 2024 bytes_copied += cur_len; 2025 } else { 2026 ipr_trace; 2027 break; 2028 } 2029 schedule(); 2030 } 2031 2032 return bytes_copied; 2033} 2034 2035/** 2036 * ipr_init_dump_entry_hdr - Initialize a dump entry header. 2037 * @hdr: dump entry header struct 2038 * 2039 * Return value: 2040 * nothing 2041 **/ 2042static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) 2043{ 2044 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; 2045 hdr->num_elems = 1; 2046 hdr->offset = sizeof(*hdr); 2047 hdr->status = IPR_DUMP_STATUS_SUCCESS; 2048} 2049 2050/** 2051 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. 2052 * @ioa_cfg: ioa config struct 2053 * @driver_dump: driver dump struct 2054 * 2055 * Return value: 2056 * nothing 2057 **/ 2058static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, 2059 struct ipr_driver_dump *driver_dump) 2060{ 2061 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2062 2063 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); 2064 driver_dump->ioa_type_entry.hdr.len = 2065 sizeof(struct ipr_dump_ioa_type_entry) - 2066 sizeof(struct ipr_dump_entry_header); 2067 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2068 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; 2069 driver_dump->ioa_type_entry.type = ioa_cfg->type; 2070 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | 2071 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | 2072 ucode_vpd->minor_release[1]; 2073 driver_dump->hdr.num_entries++; 2074} 2075 2076/** 2077 * ipr_dump_version_data - Fill in the driver version in the dump. 2078 * @ioa_cfg: ioa config struct 2079 * @driver_dump: driver dump struct 2080 * 2081 * Return value: 2082 * nothing 2083 **/ 2084static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, 2085 struct ipr_driver_dump *driver_dump) 2086{ 2087 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); 2088 driver_dump->version_entry.hdr.len = 2089 sizeof(struct ipr_dump_version_entry) - 2090 sizeof(struct ipr_dump_entry_header); 2091 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2092 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; 2093 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); 2094 driver_dump->hdr.num_entries++; 2095} 2096 2097/** 2098 * ipr_dump_trace_data - Fill in the IOA trace in the dump. 2099 * @ioa_cfg: ioa config struct 2100 * @driver_dump: driver dump struct 2101 * 2102 * Return value: 2103 * nothing 2104 **/ 2105static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, 2106 struct ipr_driver_dump *driver_dump) 2107{ 2108 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); 2109 driver_dump->trace_entry.hdr.len = 2110 sizeof(struct ipr_dump_trace_entry) - 2111 sizeof(struct ipr_dump_entry_header); 2112 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2113 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; 2114 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); 2115 driver_dump->hdr.num_entries++; 2116} 2117 2118/** 2119 * ipr_dump_location_data - Fill in the IOA location in the dump. 2120 * @ioa_cfg: ioa config struct 2121 * @driver_dump: driver dump struct 2122 * 2123 * Return value: 2124 * nothing 2125 **/ 2126static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, 2127 struct ipr_driver_dump *driver_dump) 2128{ 2129 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); 2130 driver_dump->location_entry.hdr.len = 2131 sizeof(struct ipr_dump_location_entry) - 2132 sizeof(struct ipr_dump_entry_header); 2133 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2134 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; 2135 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id); 2136 driver_dump->hdr.num_entries++; 2137} 2138 2139/** 2140 * ipr_get_ioa_dump - Perform a dump of the driver and adapter. 2141 * @ioa_cfg: ioa config struct 2142 * @dump: dump struct 2143 * 2144 * Return value: 2145 * nothing 2146 **/ 2147static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) 2148{ 2149 unsigned long start_addr, sdt_word; 2150 unsigned long lock_flags = 0; 2151 struct ipr_driver_dump *driver_dump = &dump->driver_dump; 2152 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; 2153 u32 num_entries, start_off, end_off; 2154 u32 bytes_to_copy, bytes_copied, rc; 2155 struct ipr_sdt *sdt; 2156 int i; 2157 2158 ENTER; 2159 2160 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2161 2162 if (ioa_cfg->sdt_state != GET_DUMP) { 2163 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2164 return; 2165 } 2166 2167 start_addr = readl(ioa_cfg->ioa_mailbox); 2168 2169 if (!ipr_sdt_is_fmt2(start_addr)) { 2170 dev_err(&ioa_cfg->pdev->dev, 2171 "Invalid dump table format: %lx\n", start_addr); 2172 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2173 return; 2174 } 2175 2176 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); 2177 2178 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; 2179 2180 /* Initialize the overall dump header */ 2181 driver_dump->hdr.len = sizeof(struct ipr_driver_dump); 2182 driver_dump->hdr.num_entries = 1; 2183 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); 2184 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; 2185 driver_dump->hdr.os = IPR_DUMP_OS_LINUX; 2186 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; 2187 2188 ipr_dump_version_data(ioa_cfg, driver_dump); 2189 ipr_dump_location_data(ioa_cfg, driver_dump); 2190 ipr_dump_ioa_type_data(ioa_cfg, driver_dump); 2191 ipr_dump_trace_data(ioa_cfg, driver_dump); 2192 2193 /* Update dump_header */ 2194 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); 2195 2196 /* IOA Dump entry */ 2197 ipr_init_dump_entry_hdr(&ioa_dump->hdr); 2198 ioa_dump->format = IPR_SDT_FMT2; 2199 ioa_dump->hdr.len = 0; 2200 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2201 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; 2202 2203 /* First entries in sdt are actually a list of dump addresses and 2204 lengths to gather the real dump data. sdt represents the pointer 2205 to the ioa generated dump table. Dump data will be extracted based 2206 on entries in this table */ 2207 sdt = &ioa_dump->sdt; 2208 2209 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, 2210 sizeof(struct ipr_sdt) / sizeof(__be32)); 2211 2212 /* Smart Dump table is ready to use and the first entry is valid */ 2213 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) { 2214 dev_err(&ioa_cfg->pdev->dev, 2215 "Dump of IOA failed. Dump table not valid: %d, %X.\n", 2216 rc, be32_to_cpu(sdt->hdr.state)); 2217 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; 2218 ioa_cfg->sdt_state = DUMP_OBTAINED; 2219 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2220 return; 2221 } 2222 2223 num_entries = be32_to_cpu(sdt->hdr.num_entries_used); 2224 2225 if (num_entries > IPR_NUM_SDT_ENTRIES) 2226 num_entries = IPR_NUM_SDT_ENTRIES; 2227 2228 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2229 2230 for (i = 0; i < num_entries; i++) { 2231 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) { 2232 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 2233 break; 2234 } 2235 2236 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { 2237 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset); 2238 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; 2239 end_off = be32_to_cpu(sdt->entry[i].end_offset); 2240 2241 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) { 2242 bytes_to_copy = end_off - start_off; 2243 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) { 2244 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; 2245 continue; 2246 } 2247 2248 /* Copy data from adapter to driver buffers */ 2249 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, 2250 bytes_to_copy); 2251 2252 ioa_dump->hdr.len += bytes_copied; 2253 2254 if (bytes_copied != bytes_to_copy) { 2255 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 2256 break; 2257 } 2258 } 2259 } 2260 } 2261 2262 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); 2263 2264 /* Update dump_header */ 2265 driver_dump->hdr.len += ioa_dump->hdr.len; 2266 wmb(); 2267 ioa_cfg->sdt_state = DUMP_OBTAINED; 2268 LEAVE; 2269} 2270 2271#else 2272#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0) 2273#endif 2274 2275/** 2276 * ipr_release_dump - Free adapter dump memory 2277 * @kref: kref struct 2278 * 2279 * Return value: 2280 * nothing 2281 **/ 2282static void ipr_release_dump(struct kref *kref) 2283{ 2284 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref); 2285 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; 2286 unsigned long lock_flags = 0; 2287 int i; 2288 2289 ENTER; 2290 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2291 ioa_cfg->dump = NULL; 2292 ioa_cfg->sdt_state = INACTIVE; 2293 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2294 2295 for (i = 0; i < dump->ioa_dump.next_page_index; i++) 2296 free_page((unsigned long) dump->ioa_dump.ioa_data[i]); 2297 2298 kfree(dump); 2299 LEAVE; 2300} 2301 2302/** 2303 * ipr_worker_thread - Worker thread 2304 * @work: ioa config struct 2305 * 2306 * Called at task level from a work thread. This function takes care 2307 * of adding and removing device from the mid-layer as configuration 2308 * changes are detected by the adapter. 2309 * 2310 * Return value: 2311 * nothing 2312 **/ 2313static void ipr_worker_thread(struct work_struct *work) 2314{ 2315 unsigned long lock_flags; 2316 struct ipr_resource_entry *res; 2317 struct scsi_device *sdev; 2318 struct ipr_dump *dump; 2319 struct ipr_ioa_cfg *ioa_cfg = 2320 container_of(work, struct ipr_ioa_cfg, work_q); 2321 u8 bus, target, lun; 2322 int did_work; 2323 2324 ENTER; 2325 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2326 2327 if (ioa_cfg->sdt_state == GET_DUMP) { 2328 dump = ioa_cfg->dump; 2329 if (!dump) { 2330 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2331 return; 2332 } 2333 kref_get(&dump->kref); 2334 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2335 ipr_get_ioa_dump(ioa_cfg, dump); 2336 kref_put(&dump->kref, ipr_release_dump); 2337 2338 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2339 if (ioa_cfg->sdt_state == DUMP_OBTAINED) 2340 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2341 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2342 return; 2343 } 2344 2345restart: 2346 do { 2347 did_work = 0; 2348 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) { 2349 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2350 return; 2351 } 2352 2353 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2354 if (res->del_from_ml && res->sdev) { 2355 did_work = 1; 2356 sdev = res->sdev; 2357 if (!scsi_device_get(sdev)) { 2358 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 2359 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2360 scsi_remove_device(sdev); 2361 scsi_device_put(sdev); 2362 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2363 } 2364 break; 2365 } 2366 } 2367 } while(did_work); 2368 2369 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2370 if (res->add_to_ml) { 2371 bus = res->cfgte.res_addr.bus; 2372 target = res->cfgte.res_addr.target; 2373 lun = res->cfgte.res_addr.lun; 2374 res->add_to_ml = 0; 2375 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2376 scsi_add_device(ioa_cfg->host, bus, target, lun); 2377 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2378 goto restart; 2379 } 2380 } 2381 2382 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2383 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE); 2384 LEAVE; 2385} 2386 2387#ifdef CONFIG_SCSI_IPR_TRACE 2388/** 2389 * ipr_read_trace - Dump the adapter trace 2390 * @kobj: kobject struct 2391 * @buf: buffer 2392 * @off: offset 2393 * @count: buffer size 2394 * 2395 * Return value: 2396 * number of bytes printed to buffer 2397 **/ 2398static ssize_t ipr_read_trace(struct kobject *kobj, char *buf, 2399 loff_t off, size_t count) 2400{ 2401 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 2402 struct Scsi_Host *shost = class_to_shost(cdev); 2403 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2404 unsigned long lock_flags = 0; 2405 int size = IPR_TRACE_SIZE; 2406 char *src = (char *)ioa_cfg->trace; 2407 2408 if (off > size) 2409 return 0; 2410 if (off + count > size) { 2411 size -= off; 2412 count = size; 2413 } 2414 2415 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2416 memcpy(buf, &src[off], count); 2417 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2418 return count; 2419} 2420 2421static struct bin_attribute ipr_trace_attr = { 2422 .attr = { 2423 .name = "trace", 2424 .mode = S_IRUGO, 2425 }, 2426 .size = 0, 2427 .read = ipr_read_trace, 2428}; 2429#endif 2430 2431static const struct { 2432 enum ipr_cache_state state; 2433 char *name; 2434} cache_state [] = { 2435 { CACHE_NONE, "none" }, 2436 { CACHE_DISABLED, "disabled" }, 2437 { CACHE_ENABLED, "enabled" } 2438}; 2439 2440/** 2441 * ipr_show_write_caching - Show the write caching attribute 2442 * @class_dev: class device struct 2443 * @buf: buffer 2444 * 2445 * Return value: 2446 * number of bytes printed to buffer 2447 **/ 2448static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf) 2449{ 2450 struct Scsi_Host *shost = class_to_shost(class_dev); 2451 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2452 unsigned long lock_flags = 0; 2453 int i, len = 0; 2454 2455 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2456 for (i = 0; i < ARRAY_SIZE(cache_state); i++) { 2457 if (cache_state[i].state == ioa_cfg->cache_state) { 2458 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name); 2459 break; 2460 } 2461 } 2462 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2463 return len; 2464} 2465 2466 2467/** 2468 * ipr_store_write_caching - Enable/disable adapter write cache 2469 * @class_dev: class_device struct 2470 * @buf: buffer 2471 * @count: buffer size 2472 * 2473 * This function will enable/disable adapter write cache. 2474 * 2475 * Return value: 2476 * count on success / other on failure 2477 **/ 2478static ssize_t ipr_store_write_caching(struct class_device *class_dev, 2479 const char *buf, size_t count) 2480{ 2481 struct Scsi_Host *shost = class_to_shost(class_dev); 2482 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2483 unsigned long lock_flags = 0; 2484 enum ipr_cache_state new_state = CACHE_INVALID; 2485 int i; 2486 2487 if (!capable(CAP_SYS_ADMIN)) 2488 return -EACCES; 2489 if (ioa_cfg->cache_state == CACHE_NONE) 2490 return -EINVAL; 2491 2492 for (i = 0; i < ARRAY_SIZE(cache_state); i++) { 2493 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) { 2494 new_state = cache_state[i].state; 2495 break; 2496 } 2497 } 2498 2499 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED) 2500 return -EINVAL; 2501 2502 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2503 if (ioa_cfg->cache_state == new_state) { 2504 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2505 return count; 2506 } 2507 2508 ioa_cfg->cache_state = new_state; 2509 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n", 2510 new_state == CACHE_ENABLED ? "Enabling" : "Disabling"); 2511 if (!ioa_cfg->in_reset_reload) 2512 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2513 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2514 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2515 2516 return count; 2517} 2518 2519static struct class_device_attribute ipr_ioa_cache_attr = { 2520 .attr = { 2521 .name = "write_cache", 2522 .mode = S_IRUGO | S_IWUSR, 2523 }, 2524 .show = ipr_show_write_caching, 2525 .store = ipr_store_write_caching 2526}; 2527 2528/** 2529 * ipr_show_fw_version - Show the firmware version 2530 * @class_dev: class device struct 2531 * @buf: buffer 2532 * 2533 * Return value: 2534 * number of bytes printed to buffer 2535 **/ 2536static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf) 2537{ 2538 struct Scsi_Host *shost = class_to_shost(class_dev); 2539 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2540 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2541 unsigned long lock_flags = 0; 2542 int len; 2543 2544 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2545 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 2546 ucode_vpd->major_release, ucode_vpd->card_type, 2547 ucode_vpd->minor_release[0], 2548 ucode_vpd->minor_release[1]); 2549 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2550 return len; 2551} 2552 2553static struct class_device_attribute ipr_fw_version_attr = { 2554 .attr = { 2555 .name = "fw_version", 2556 .mode = S_IRUGO, 2557 }, 2558 .show = ipr_show_fw_version, 2559}; 2560 2561/** 2562 * ipr_show_log_level - Show the adapter's error logging level 2563 * @class_dev: class device struct 2564 * @buf: buffer 2565 * 2566 * Return value: 2567 * number of bytes printed to buffer 2568 **/ 2569static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf) 2570{ 2571 struct Scsi_Host *shost = class_to_shost(class_dev); 2572 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2573 unsigned long lock_flags = 0; 2574 int len; 2575 2576 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2577 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 2578 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2579 return len; 2580} 2581 2582/** 2583 * ipr_store_log_level - Change the adapter's error logging level 2584 * @class_dev: class device struct 2585 * @buf: buffer 2586 * 2587 * Return value: 2588 * number of bytes printed to buffer 2589 **/ 2590static ssize_t ipr_store_log_level(struct class_device *class_dev, 2591 const char *buf, size_t count) 2592{ 2593 struct Scsi_Host *shost = class_to_shost(class_dev); 2594 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2595 unsigned long lock_flags = 0; 2596 2597 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2598 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 2599 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2600 return strlen(buf); 2601} 2602 2603static struct class_device_attribute ipr_log_level_attr = { 2604 .attr = { 2605 .name = "log_level", 2606 .mode = S_IRUGO | S_IWUSR, 2607 }, 2608 .show = ipr_show_log_level, 2609 .store = ipr_store_log_level 2610}; 2611 2612/** 2613 * ipr_store_diagnostics - IOA Diagnostics interface 2614 * @class_dev: class_device struct 2615 * @buf: buffer 2616 * @count: buffer size 2617 * 2618 * This function will reset the adapter and wait a reasonable 2619 * amount of time for any errors that the adapter might log. 2620 * 2621 * Return value: 2622 * count on success / other on failure 2623 **/ 2624static ssize_t ipr_store_diagnostics(struct class_device *class_dev, 2625 const char *buf, size_t count) 2626{ 2627 struct Scsi_Host *shost = class_to_shost(class_dev); 2628 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2629 unsigned long lock_flags = 0; 2630 int rc = count; 2631 2632 if (!capable(CAP_SYS_ADMIN)) 2633 return -EACCES; 2634 2635 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2636 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2637 ioa_cfg->errors_logged = 0; 2638 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2639 2640 if (ioa_cfg->in_reset_reload) { 2641 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2642 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2643 2644 /* Wait for a second for any errors to be logged */ 2645 msleep(1000); 2646 } else { 2647 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2648 return -EIO; 2649 } 2650 2651 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2652 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 2653 rc = -EIO; 2654 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2655 2656 return rc; 2657} 2658 2659static struct class_device_attribute ipr_diagnostics_attr = { 2660 .attr = { 2661 .name = "run_diagnostics", 2662 .mode = S_IWUSR, 2663 }, 2664 .store = ipr_store_diagnostics 2665}; 2666 2667/** 2668 * ipr_show_adapter_state - Show the adapter's state 2669 * @class_dev: class device struct 2670 * @buf: buffer 2671 * 2672 * Return value: 2673 * number of bytes printed to buffer 2674 **/ 2675static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf) 2676{ 2677 struct Scsi_Host *shost = class_to_shost(class_dev); 2678 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2679 unsigned long lock_flags = 0; 2680 int len; 2681 2682 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2683 if (ioa_cfg->ioa_is_dead) 2684 len = snprintf(buf, PAGE_SIZE, "offline\n"); 2685 else 2686 len = snprintf(buf, PAGE_SIZE, "online\n"); 2687 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2688 return len; 2689} 2690 2691/** 2692 * ipr_store_adapter_state - Change adapter state 2693 * @class_dev: class_device struct 2694 * @buf: buffer 2695 * @count: buffer size 2696 * 2697 * This function will change the adapter's state. 2698 * 2699 * Return value: 2700 * count on success / other on failure 2701 **/ 2702static ssize_t ipr_store_adapter_state(struct class_device *class_dev, 2703 const char *buf, size_t count) 2704{ 2705 struct Scsi_Host *shost = class_to_shost(class_dev); 2706 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2707 unsigned long lock_flags; 2708 int result = count; 2709 2710 if (!capable(CAP_SYS_ADMIN)) 2711 return -EACCES; 2712 2713 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2714 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) { 2715 ioa_cfg->ioa_is_dead = 0; 2716 ioa_cfg->reset_retries = 0; 2717 ioa_cfg->in_ioa_bringdown = 0; 2718 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2719 } 2720 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2721 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2722 2723 return result; 2724} 2725 2726static struct class_device_attribute ipr_ioa_state_attr = { 2727 .attr = { 2728 .name = "state", 2729 .mode = S_IRUGO | S_IWUSR, 2730 }, 2731 .show = ipr_show_adapter_state, 2732 .store = ipr_store_adapter_state 2733}; 2734 2735/** 2736 * ipr_store_reset_adapter - Reset the adapter 2737 * @class_dev: class_device struct 2738 * @buf: buffer 2739 * @count: buffer size 2740 * 2741 * This function will reset the adapter. 2742 * 2743 * Return value: 2744 * count on success / other on failure 2745 **/ 2746static ssize_t ipr_store_reset_adapter(struct class_device *class_dev, 2747 const char *buf, size_t count) 2748{ 2749 struct Scsi_Host *shost = class_to_shost(class_dev); 2750 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2751 unsigned long lock_flags; 2752 int result = count; 2753 2754 if (!capable(CAP_SYS_ADMIN)) 2755 return -EACCES; 2756 2757 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2758 if (!ioa_cfg->in_reset_reload) 2759 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2760 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2761 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2762 2763 return result; 2764} 2765 2766static struct class_device_attribute ipr_ioa_reset_attr = { 2767 .attr = { 2768 .name = "reset_host", 2769 .mode = S_IWUSR, 2770 }, 2771 .store = ipr_store_reset_adapter 2772}; 2773 2774/** 2775 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 2776 * @buf_len: buffer length 2777 * 2778 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 2779 * list to use for microcode download 2780 * 2781 * Return value: 2782 * pointer to sglist / NULL on failure 2783 **/ 2784static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 2785{ 2786 int sg_size, order, bsize_elem, num_elem, i, j; 2787 struct ipr_sglist *sglist; 2788 struct scatterlist *scatterlist; 2789 struct page *page; 2790 2791 /* Get the minimum size per scatter/gather element */ 2792 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 2793 2794 /* Get the actual size per element */ 2795 order = get_order(sg_size); 2796 2797 /* Determine the actual number of bytes per element */ 2798 bsize_elem = PAGE_SIZE * (1 << order); 2799 2800 /* Determine the actual number of sg entries needed */ 2801 if (buf_len % bsize_elem) 2802 num_elem = (buf_len / bsize_elem) + 1; 2803 else 2804 num_elem = buf_len / bsize_elem; 2805 2806 /* Allocate a scatter/gather list for the DMA */ 2807 sglist = kzalloc(sizeof(struct ipr_sglist) + 2808 (sizeof(struct scatterlist) * (num_elem - 1)), 2809 GFP_KERNEL); 2810 2811 if (sglist == NULL) { 2812 ipr_trace; 2813 return NULL; 2814 } 2815 2816 scatterlist = sglist->scatterlist; 2817 2818 sglist->order = order; 2819 sglist->num_sg = num_elem; 2820 2821 /* Allocate a bunch of sg elements */ 2822 for (i = 0; i < num_elem; i++) { 2823 page = alloc_pages(GFP_KERNEL, order); 2824 if (!page) { 2825 ipr_trace; 2826 2827 /* Free up what we already allocated */ 2828 for (j = i - 1; j >= 0; j--) 2829 __free_pages(scatterlist[j].page, order); 2830 kfree(sglist); 2831 return NULL; 2832 } 2833 2834 scatterlist[i].page = page; 2835 } 2836 2837 return sglist; 2838} 2839 2840/** 2841 * ipr_free_ucode_buffer - Frees a microcode download buffer 2842 * @p_dnld: scatter/gather list pointer 2843 * 2844 * Free a DMA'able ucode download buffer previously allocated with 2845 * ipr_alloc_ucode_buffer 2846 * 2847 * Return value: 2848 * nothing 2849 **/ 2850static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 2851{ 2852 int i; 2853 2854 for (i = 0; i < sglist->num_sg; i++) 2855 __free_pages(sglist->scatterlist[i].page, sglist->order); 2856 2857 kfree(sglist); 2858} 2859 2860/** 2861 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 2862 * @sglist: scatter/gather list pointer 2863 * @buffer: buffer pointer 2864 * @len: buffer length 2865 * 2866 * Copy a microcode image from a user buffer into a buffer allocated by 2867 * ipr_alloc_ucode_buffer 2868 * 2869 * Return value: 2870 * 0 on success / other on failure 2871 **/ 2872static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 2873 u8 *buffer, u32 len) 2874{ 2875 int bsize_elem, i, result = 0; 2876 struct scatterlist *scatterlist; 2877 void *kaddr; 2878 2879 /* Determine the actual number of bytes per element */ 2880 bsize_elem = PAGE_SIZE * (1 << sglist->order); 2881 2882 scatterlist = sglist->scatterlist; 2883 2884 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { 2885 kaddr = kmap(scatterlist[i].page); 2886 memcpy(kaddr, buffer, bsize_elem); 2887 kunmap(scatterlist[i].page); 2888 2889 scatterlist[i].length = bsize_elem; 2890 2891 if (result != 0) { 2892 ipr_trace; 2893 return result; 2894 } 2895 } 2896 2897 if (len % bsize_elem) { 2898 kaddr = kmap(scatterlist[i].page); 2899 memcpy(kaddr, buffer, len % bsize_elem); 2900 kunmap(scatterlist[i].page); 2901 2902 scatterlist[i].length = len % bsize_elem; 2903 } 2904 2905 sglist->buffer_len = len; 2906 return result; 2907} 2908 2909/** 2910 * ipr_build_ucode_ioadl - Build a microcode download IOADL 2911 * @ipr_cmd: ipr command struct 2912 * @sglist: scatter/gather list 2913 * 2914 * Builds a microcode download IOA data list (IOADL). 2915 * 2916 **/ 2917static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, 2918 struct ipr_sglist *sglist) 2919{ 2920 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 2921 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 2922 struct scatterlist *scatterlist = sglist->scatterlist; 2923 int i; 2924 2925 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 2926 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 2927 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len); 2928 ioarcb->write_ioadl_len = 2929 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 2930 2931 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 2932 ioadl[i].flags_and_data_len = 2933 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); 2934 ioadl[i].address = 2935 cpu_to_be32(sg_dma_address(&scatterlist[i])); 2936 } 2937 2938 ioadl[i-1].flags_and_data_len |= 2939 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 2940} 2941 2942/** 2943 * ipr_update_ioa_ucode - Update IOA's microcode 2944 * @ioa_cfg: ioa config struct 2945 * @sglist: scatter/gather list 2946 * 2947 * Initiate an adapter reset to update the IOA's microcode 2948 * 2949 * Return value: 2950 * 0 on success / -EIO on failure 2951 **/ 2952static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, 2953 struct ipr_sglist *sglist) 2954{ 2955 unsigned long lock_flags; 2956 2957 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2958 2959 if (ioa_cfg->ucode_sglist) { 2960 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2961 dev_err(&ioa_cfg->pdev->dev, 2962 "Microcode download already in progress\n"); 2963 return -EIO; 2964 } 2965 2966 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist, 2967 sglist->num_sg, DMA_TO_DEVICE); 2968 2969 if (!sglist->num_dma_sg) { 2970 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2971 dev_err(&ioa_cfg->pdev->dev, 2972 "Failed to map microcode download buffer!\n"); 2973 return -EIO; 2974 } 2975 2976 ioa_cfg->ucode_sglist = sglist; 2977 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2978 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2979 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2980 2981 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2982 ioa_cfg->ucode_sglist = NULL; 2983 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2984 return 0; 2985} 2986 2987/** 2988 * ipr_store_update_fw - Update the firmware on the adapter 2989 * @class_dev: class_device struct 2990 * @buf: buffer 2991 * @count: buffer size 2992 * 2993 * This function will update the firmware on the adapter. 2994 * 2995 * Return value: 2996 * count on success / other on failure 2997 **/ 2998static ssize_t ipr_store_update_fw(struct class_device *class_dev, 2999 const char *buf, size_t count) 3000{ 3001 struct Scsi_Host *shost = class_to_shost(class_dev); 3002 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3003 struct ipr_ucode_image_header *image_hdr; 3004 const struct firmware *fw_entry; 3005 struct ipr_sglist *sglist; 3006 char fname[100]; 3007 char *src; 3008 int len, result, dnld_size; 3009 3010 if (!capable(CAP_SYS_ADMIN)) 3011 return -EACCES; 3012 3013 len = snprintf(fname, 99, "%s", buf); 3014 fname[len-1] = '\0'; 3015 3016 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 3017 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 3018 return -EIO; 3019 } 3020 3021 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 3022 3023 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size || 3024 (ioa_cfg->vpd_cbs->page3_data.card_type && 3025 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) { 3026 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n"); 3027 release_firmware(fw_entry); 3028 return -EINVAL; 3029 } 3030 3031 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 3032 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 3033 sglist = ipr_alloc_ucode_buffer(dnld_size); 3034 3035 if (!sglist) { 3036 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 3037 release_firmware(fw_entry); 3038 return -ENOMEM; 3039 } 3040 3041 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 3042 3043 if (result) { 3044 dev_err(&ioa_cfg->pdev->dev, 3045 "Microcode buffer copy to DMA buffer failed\n"); 3046 goto out; 3047 } 3048 3049 result = ipr_update_ioa_ucode(ioa_cfg, sglist); 3050 3051 if (!result) 3052 result = count; 3053out: 3054 ipr_free_ucode_buffer(sglist); 3055 release_firmware(fw_entry); 3056 return result; 3057} 3058 3059static struct class_device_attribute ipr_update_fw_attr = { 3060 .attr = { 3061 .name = "update_fw", 3062 .mode = S_IWUSR, 3063 }, 3064 .store = ipr_store_update_fw 3065}; 3066 3067static struct class_device_attribute *ipr_ioa_attrs[] = { 3068 &ipr_fw_version_attr, 3069 &ipr_log_level_attr, 3070 &ipr_diagnostics_attr, 3071 &ipr_ioa_state_attr, 3072 &ipr_ioa_reset_attr, 3073 &ipr_update_fw_attr, 3074 &ipr_ioa_cache_attr, 3075 NULL, 3076}; 3077 3078#ifdef CONFIG_SCSI_IPR_DUMP 3079/** 3080 * ipr_read_dump - Dump the adapter 3081 * @kobj: kobject struct 3082 * @buf: buffer 3083 * @off: offset 3084 * @count: buffer size 3085 * 3086 * Return value: 3087 * number of bytes printed to buffer 3088 **/ 3089static ssize_t ipr_read_dump(struct kobject *kobj, char *buf, 3090 loff_t off, size_t count) 3091{ 3092 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 3093 struct Scsi_Host *shost = class_to_shost(cdev); 3094 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3095 struct ipr_dump *dump; 3096 unsigned long lock_flags = 0; 3097 char *src; 3098 int len; 3099 size_t rc = count; 3100 3101 if (!capable(CAP_SYS_ADMIN)) 3102 return -EACCES; 3103 3104 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3105 dump = ioa_cfg->dump; 3106 3107 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 3108 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3109 return 0; 3110 } 3111 kref_get(&dump->kref); 3112 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3113 3114 if (off > dump->driver_dump.hdr.len) { 3115 kref_put(&dump->kref, ipr_release_dump); 3116 return 0; 3117 } 3118 3119 if (off + count > dump->driver_dump.hdr.len) { 3120 count = dump->driver_dump.hdr.len - off; 3121 rc = count; 3122 } 3123 3124 if (count && off < sizeof(dump->driver_dump)) { 3125 if (off + count > sizeof(dump->driver_dump)) 3126 len = sizeof(dump->driver_dump) - off; 3127 else 3128 len = count; 3129 src = (u8 *)&dump->driver_dump + off; 3130 memcpy(buf, src, len); 3131 buf += len; 3132 off += len; 3133 count -= len; 3134 } 3135 3136 off -= sizeof(dump->driver_dump); 3137 3138 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) { 3139 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data)) 3140 len = offsetof(struct ipr_ioa_dump, ioa_data) - off; 3141 else 3142 len = count; 3143 src = (u8 *)&dump->ioa_dump + off; 3144 memcpy(buf, src, len); 3145 buf += len; 3146 off += len; 3147 count -= len; 3148 } 3149 3150 off -= offsetof(struct ipr_ioa_dump, ioa_data); 3151 3152 while (count) { 3153 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 3154 len = PAGE_ALIGN(off) - off; 3155 else 3156 len = count; 3157 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 3158 src += off & ~PAGE_MASK; 3159 memcpy(buf, src, len); 3160 buf += len; 3161 off += len; 3162 count -= len; 3163 } 3164 3165 kref_put(&dump->kref, ipr_release_dump); 3166 return rc; 3167} 3168 3169/** 3170 * ipr_alloc_dump - Prepare for adapter dump 3171 * @ioa_cfg: ioa config struct 3172 * 3173 * Return value: 3174 * 0 on success / other on failure 3175 **/ 3176static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 3177{ 3178 struct ipr_dump *dump; 3179 unsigned long lock_flags = 0; 3180 3181 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); 3182 3183 if (!dump) { 3184 ipr_err("Dump memory allocation failed\n"); 3185 return -ENOMEM; 3186 } 3187 3188 kref_init(&dump->kref); 3189 dump->ioa_cfg = ioa_cfg; 3190 3191 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3192 3193 if (INACTIVE != ioa_cfg->sdt_state) { 3194 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3195 kfree(dump); 3196 return 0; 3197 } 3198 3199 ioa_cfg->dump = dump; 3200 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 3201 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) { 3202 ioa_cfg->dump_taken = 1; 3203 schedule_work(&ioa_cfg->work_q); 3204 } 3205 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3206 3207 return 0; 3208} 3209 3210/** 3211 * ipr_free_dump - Free adapter dump memory 3212 * @ioa_cfg: ioa config struct 3213 * 3214 * Return value: 3215 * 0 on success / other on failure 3216 **/ 3217static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 3218{ 3219 struct ipr_dump *dump; 3220 unsigned long lock_flags = 0; 3221 3222 ENTER; 3223 3224 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3225 dump = ioa_cfg->dump; 3226 if (!dump) { 3227 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3228 return 0; 3229 } 3230 3231 ioa_cfg->dump = NULL; 3232 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3233 3234 kref_put(&dump->kref, ipr_release_dump); 3235 3236 LEAVE; 3237 return 0; 3238} 3239 3240/** 3241 * ipr_write_dump - Setup dump state of adapter 3242 * @kobj: kobject struct 3243 * @buf: buffer 3244 * @off: offset 3245 * @count: buffer size 3246 * 3247 * Return value: 3248 * number of bytes printed to buffer 3249 **/ 3250static ssize_t ipr_write_dump(struct kobject *kobj, char *buf, 3251 loff_t off, size_t count) 3252{ 3253 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 3254 struct Scsi_Host *shost = class_to_shost(cdev); 3255 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3256 int rc; 3257 3258 if (!capable(CAP_SYS_ADMIN)) 3259 return -EACCES; 3260 3261 if (buf[0] == '1') 3262 rc = ipr_alloc_dump(ioa_cfg); 3263 else if (buf[0] == '0') 3264 rc = ipr_free_dump(ioa_cfg); 3265 else 3266 return -EINVAL; 3267 3268 if (rc) 3269 return rc; 3270 else 3271 return count; 3272} 3273 3274static struct bin_attribute ipr_dump_attr = { 3275 .attr = { 3276 .name = "dump", 3277 .mode = S_IRUSR | S_IWUSR, 3278 }, 3279 .size = 0, 3280 .read = ipr_read_dump, 3281 .write = ipr_write_dump 3282}; 3283#else 3284static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 3285#endif 3286 3287/** 3288 * ipr_change_queue_depth - Change the device's queue depth 3289 * @sdev: scsi device struct 3290 * @qdepth: depth to set 3291 * 3292 * Return value: 3293 * actual depth set 3294 **/ 3295static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) 3296{ 3297 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3298 struct ipr_resource_entry *res; 3299 unsigned long lock_flags = 0; 3300 3301 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3302 res = (struct ipr_resource_entry *)sdev->hostdata; 3303 3304 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN) 3305 qdepth = IPR_MAX_CMD_PER_ATA_LUN; 3306 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3307 3308 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); 3309 return sdev->queue_depth; 3310} 3311 3312/** 3313 * ipr_change_queue_type - Change the device's queue type 3314 * @dsev: scsi device struct 3315 * @tag_type: type of tags to use 3316 * 3317 * Return value: 3318 * actual queue type set 3319 **/ 3320static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type) 3321{ 3322 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3323 struct ipr_resource_entry *res; 3324 unsigned long lock_flags = 0; 3325 3326 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3327 res = (struct ipr_resource_entry *)sdev->hostdata; 3328 3329 if (res) { 3330 if (ipr_is_gscsi(res) && sdev->tagged_supported) { 3331 /* 3332 * We don't bother quiescing the device here since the 3333 * adapter firmware does it for us. 3334 */ 3335 scsi_set_tag_type(sdev, tag_type); 3336 3337 if (tag_type) 3338 scsi_activate_tcq(sdev, sdev->queue_depth); 3339 else 3340 scsi_deactivate_tcq(sdev, sdev->queue_depth); 3341 } else 3342 tag_type = 0; 3343 } else 3344 tag_type = 0; 3345 3346 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3347 return tag_type; 3348} 3349 3350/** 3351 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 3352 * @dev: device struct 3353 * @buf: buffer 3354 * 3355 * Return value: 3356 * number of bytes printed to buffer 3357 **/ 3358static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) 3359{ 3360 struct scsi_device *sdev = to_scsi_device(dev); 3361 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3362 struct ipr_resource_entry *res; 3363 unsigned long lock_flags = 0; 3364 ssize_t len = -ENXIO; 3365 3366 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3367 res = (struct ipr_resource_entry *)sdev->hostdata; 3368 if (res) 3369 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle); 3370 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3371 return len; 3372} 3373 3374static struct device_attribute ipr_adapter_handle_attr = { 3375 .attr = { 3376 .name = "adapter_handle", 3377 .mode = S_IRUSR, 3378 }, 3379 .show = ipr_show_adapter_handle 3380}; 3381 3382static struct device_attribute *ipr_dev_attrs[] = { 3383 &ipr_adapter_handle_attr, 3384 NULL, 3385}; 3386 3387/** 3388 * ipr_biosparam - Return the HSC mapping 3389 * @sdev: scsi device struct 3390 * @block_device: block device pointer 3391 * @capacity: capacity of the device 3392 * @parm: Array containing returned HSC values. 3393 * 3394 * This function generates the HSC parms that fdisk uses. 3395 * We want to make sure we return something that places partitions 3396 * on 4k boundaries for best performance with the IOA. 3397 * 3398 * Return value: 3399 * 0 on success 3400 **/ 3401static int ipr_biosparam(struct scsi_device *sdev, 3402 struct block_device *block_device, 3403 sector_t capacity, int *parm) 3404{ 3405 int heads, sectors; 3406 sector_t cylinders; 3407 3408 heads = 128; 3409 sectors = 32; 3410 3411 cylinders = capacity; 3412 sector_div(cylinders, (128 * 32)); 3413 3414 /* return result */ 3415 parm[0] = heads; 3416 parm[1] = sectors; 3417 parm[2] = cylinders; 3418 3419 return 0; 3420} 3421 3422/** 3423 * ipr_find_starget - Find target based on bus/target. 3424 * @starget: scsi target struct 3425 * 3426 * Return value: 3427 * resource entry pointer if found / NULL if not found 3428 **/ 3429static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget) 3430{ 3431 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 3432 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 3433 struct ipr_resource_entry *res; 3434 3435 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3436 if ((res->cfgte.res_addr.bus == starget->channel) && 3437 (res->cfgte.res_addr.target == starget->id) && 3438 (res->cfgte.res_addr.lun == 0)) { 3439 return res; 3440 } 3441 } 3442 3443 return NULL; 3444} 3445 3446static struct ata_port_info sata_port_info; 3447 3448/** 3449 * ipr_target_alloc - Prepare for commands to a SCSI target 3450 * @starget: scsi target struct 3451 * 3452 * If the device is a SATA device, this function allocates an 3453 * ATA port with libata, else it does nothing. 3454 * 3455 * Return value: 3456 * 0 on success / non-0 on failure 3457 **/ 3458static int ipr_target_alloc(struct scsi_target *starget) 3459{ 3460 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 3461 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 3462 struct ipr_sata_port *sata_port; 3463 struct ata_port *ap; 3464 struct ipr_resource_entry *res; 3465 unsigned long lock_flags; 3466 3467 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3468 res = ipr_find_starget(starget); 3469 starget->hostdata = NULL; 3470 3471 if (res && ipr_is_gata(res)) { 3472 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3473 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL); 3474 if (!sata_port) 3475 return -ENOMEM; 3476 3477 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost); 3478 if (ap) { 3479 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3480 sata_port->ioa_cfg = ioa_cfg; 3481 sata_port->ap = ap; 3482 sata_port->res = res; 3483 3484 res->sata_port = sata_port; 3485 ap->private_data = sata_port; 3486 starget->hostdata = sata_port; 3487 } else { 3488 kfree(sata_port); 3489 return -ENOMEM; 3490 } 3491 } 3492 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3493 3494 return 0; 3495} 3496 3497/** 3498 * ipr_target_destroy - Destroy a SCSI target 3499 * @starget: scsi target struct 3500 * 3501 * If the device was a SATA device, this function frees the libata 3502 * ATA port, else it does nothing. 3503 * 3504 **/ 3505static void ipr_target_destroy(struct scsi_target *starget) 3506{ 3507 struct ipr_sata_port *sata_port = starget->hostdata; 3508 3509 if (sata_port) { 3510 starget->hostdata = NULL; 3511 ata_sas_port_destroy(sata_port->ap); 3512 kfree(sata_port); 3513 } 3514} 3515 3516/** 3517 * ipr_find_sdev - Find device based on bus/target/lun. 3518 * @sdev: scsi device struct 3519 * 3520 * Return value: 3521 * resource entry pointer if found / NULL if not found 3522 **/ 3523static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev) 3524{ 3525 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3526 struct ipr_resource_entry *res; 3527 3528 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3529 if ((res->cfgte.res_addr.bus == sdev->channel) && 3530 (res->cfgte.res_addr.target == sdev->id) && 3531 (res->cfgte.res_addr.lun == sdev->lun)) 3532 return res; 3533 } 3534 3535 return NULL; 3536} 3537 3538/** 3539 * ipr_slave_destroy - Unconfigure a SCSI device 3540 * @sdev: scsi device struct 3541 * 3542 * Return value: 3543 * nothing 3544 **/ 3545static void ipr_slave_destroy(struct scsi_device *sdev) 3546{ 3547 struct ipr_resource_entry *res; 3548 struct ipr_ioa_cfg *ioa_cfg; 3549 unsigned long lock_flags = 0; 3550 3551 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3552 3553 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3554 res = (struct ipr_resource_entry *) sdev->hostdata; 3555 if (res) { 3556 if (res->sata_port) 3557 ata_port_disable(res->sata_port->ap); 3558 sdev->hostdata = NULL; 3559 res->sdev = NULL; 3560 res->sata_port = NULL; 3561 } 3562 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3563} 3564 3565/** 3566 * ipr_slave_configure - Configure a SCSI device 3567 * @sdev: scsi device struct 3568 * 3569 * This function configures the specified scsi device. 3570 * 3571 * Return value: 3572 * 0 on success 3573 **/ 3574static int ipr_slave_configure(struct scsi_device *sdev) 3575{ 3576 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3577 struct ipr_resource_entry *res; 3578 unsigned long lock_flags = 0; 3579 3580 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3581 res = sdev->hostdata; 3582 if (res) { 3583 if (ipr_is_af_dasd_device(res)) 3584 sdev->type = TYPE_RAID; 3585 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { 3586 sdev->scsi_level = 4; 3587 sdev->no_uld_attach = 1; 3588 } 3589 if (ipr_is_vset_device(res)) { 3590 sdev->timeout = IPR_VSET_RW_TIMEOUT; 3591 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); 3592 } 3593 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)) 3594 sdev->allow_restart = 1; 3595 if (ipr_is_gata(res) && res->sata_port) { 3596 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN); 3597 ata_sas_slave_configure(sdev, res->sata_port->ap); 3598 } else { 3599 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); 3600 } 3601 } 3602 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3603 return 0; 3604} 3605 3606/** 3607 * ipr_ata_slave_alloc - Prepare for commands to a SATA device 3608 * @sdev: scsi device struct 3609 * 3610 * This function initializes an ATA port so that future commands 3611 * sent through queuecommand will work. 3612 * 3613 * Return value: 3614 * 0 on success 3615 **/ 3616static int ipr_ata_slave_alloc(struct scsi_device *sdev) 3617{ 3618 struct ipr_sata_port *sata_port = NULL; 3619 int rc = -ENXIO; 3620 3621 ENTER; 3622 if (sdev->sdev_target) 3623 sata_port = sdev->sdev_target->hostdata; 3624 if (sata_port) 3625 rc = ata_sas_port_init(sata_port->ap); 3626 if (rc) 3627 ipr_slave_destroy(sdev); 3628 3629 LEAVE; 3630 return rc; 3631} 3632 3633/** 3634 * ipr_slave_alloc - Prepare for commands to a device. 3635 * @sdev: scsi device struct 3636 * 3637 * This function saves a pointer to the resource entry 3638 * in the scsi device struct if the device exists. We 3639 * can then use this pointer in ipr_queuecommand when 3640 * handling new commands. 3641 * 3642 * Return value: 3643 * 0 on success / -ENXIO if device does not exist 3644 **/ 3645static int ipr_slave_alloc(struct scsi_device *sdev) 3646{ 3647 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3648 struct ipr_resource_entry *res; 3649 unsigned long lock_flags; 3650 int rc = -ENXIO; 3651 3652 sdev->hostdata = NULL; 3653 3654 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3655 3656 res = ipr_find_sdev(sdev); 3657 if (res) { 3658 res->sdev = sdev; 3659 res->add_to_ml = 0; 3660 res->in_erp = 0; 3661 sdev->hostdata = res; 3662 if (!ipr_is_naca_model(res)) 3663 res->needs_sync_complete = 1; 3664 rc = 0; 3665 if (ipr_is_gata(res)) { 3666 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3667 return ipr_ata_slave_alloc(sdev); 3668 } 3669 } 3670 3671 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3672 3673 return rc; 3674} 3675 3676/** 3677 * ipr_eh_host_reset - Reset the host adapter 3678 * @scsi_cmd: scsi command struct 3679 * 3680 * Return value: 3681 * SUCCESS / FAILED 3682 **/ 3683static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd) 3684{ 3685 struct ipr_ioa_cfg *ioa_cfg; 3686 int rc; 3687 3688 ENTER; 3689 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 3690 3691 dev_err(&ioa_cfg->pdev->dev, 3692 "Adapter being reset as a result of error recovery.\n"); 3693 3694 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 3695 ioa_cfg->sdt_state = GET_DUMP; 3696 3697 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV); 3698 3699 LEAVE; 3700 return rc; 3701} 3702 3703static int ipr_eh_host_reset(struct scsi_cmnd * cmd) 3704{ 3705 int rc; 3706 3707 spin_lock_irq(cmd->device->host->host_lock); 3708 rc = __ipr_eh_host_reset(cmd); 3709 spin_unlock_irq(cmd->device->host->host_lock); 3710 3711 return rc; 3712} 3713 3714/** 3715 * ipr_device_reset - Reset the device 3716 * @ioa_cfg: ioa config struct 3717 * @res: resource entry struct 3718 * 3719 * This function issues a device reset to the affected device. 3720 * If the device is a SCSI device, a LUN reset will be sent 3721 * to the device first. If that does not work, a target reset 3722 * will be sent. If the device is a SATA device, a PHY reset will 3723 * be sent. 3724 * 3725 * Return value: 3726 * 0 on success / non-zero on failure 3727 **/ 3728static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, 3729 struct ipr_resource_entry *res) 3730{ 3731 struct ipr_cmnd *ipr_cmd; 3732 struct ipr_ioarcb *ioarcb; 3733 struct ipr_cmd_pkt *cmd_pkt; 3734 struct ipr_ioarcb_ata_regs *regs; 3735 u32 ioasc; 3736 3737 ENTER; 3738 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3739 ioarcb = &ipr_cmd->ioarcb; 3740 cmd_pkt = &ioarcb->cmd_pkt; 3741 regs = &ioarcb->add_data.u.regs; 3742 3743 ioarcb->res_handle = res->cfgte.res_handle; 3744 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3745 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 3746 if (ipr_is_gata(res)) { 3747 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET; 3748 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags)); 3749 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 3750 } 3751 3752 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 3753 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3754 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3755 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) 3756 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata, 3757 sizeof(struct ipr_ioasa_gata)); 3758 3759 LEAVE; 3760 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0); 3761} 3762 3763/** 3764 * ipr_sata_reset - Reset the SATA port 3765 * @ap: SATA port to reset 3766 * @classes: class of the attached device 3767 * 3768 * This function issues a SATA phy reset to the affected ATA port. 3769 * 3770 * Return value: 3771 * 0 on success / non-zero on failure 3772 **/ 3773static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes, 3774 unsigned long deadline) 3775{ 3776 struct ipr_sata_port *sata_port = ap->private_data; 3777 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 3778 struct ipr_resource_entry *res; 3779 unsigned long lock_flags = 0; 3780 int rc = -ENXIO; 3781 3782 ENTER; 3783 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3784 while(ioa_cfg->in_reset_reload) { 3785 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3786 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3787 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3788 } 3789 3790 res = sata_port->res; 3791 if (res) { 3792 rc = ipr_device_reset(ioa_cfg, res); 3793 switch(res->cfgte.proto) { 3794 case IPR_PROTO_SATA: 3795 case IPR_PROTO_SAS_STP: 3796 *classes = ATA_DEV_ATA; 3797 break; 3798 case IPR_PROTO_SATA_ATAPI: 3799 case IPR_PROTO_SAS_STP_ATAPI: 3800 *classes = ATA_DEV_ATAPI; 3801 break; 3802 default: 3803 *classes = ATA_DEV_UNKNOWN; 3804 break; 3805 }; 3806 } 3807 3808 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3809 LEAVE; 3810 return rc; 3811} 3812 3813/** 3814 * ipr_eh_dev_reset - Reset the device 3815 * @scsi_cmd: scsi command struct 3816 * 3817 * This function issues a device reset to the affected device. 3818 * A LUN reset will be sent to the device first. If that does 3819 * not work, a target reset will be sent. 3820 * 3821 * Return value: 3822 * SUCCESS / FAILED 3823 **/ 3824static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) 3825{ 3826 struct ipr_cmnd *ipr_cmd; 3827 struct ipr_ioa_cfg *ioa_cfg; 3828 struct ipr_resource_entry *res; 3829 struct ata_port *ap; 3830 int rc = 0; 3831 3832 ENTER; 3833 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 3834 res = scsi_cmd->device->hostdata; 3835 3836 if (!res) 3837 return FAILED; 3838 3839 /* 3840 * If we are currently going through reset/reload, return failed. This will force the 3841 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 3842 * reset to complete 3843 */ 3844 if (ioa_cfg->in_reset_reload) 3845 return FAILED; 3846 if (ioa_cfg->ioa_is_dead) 3847 return FAILED; 3848 3849 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3850 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) { 3851 if (ipr_cmd->scsi_cmd) 3852 ipr_cmd->done = ipr_scsi_eh_done; 3853 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) { 3854 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT; 3855 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED; 3856 } 3857 } 3858 } 3859 3860 res->resetting_device = 1; 3861 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); 3862 3863 if (ipr_is_gata(res) && res->sata_port) { 3864 ap = res->sata_port->ap; 3865 spin_unlock_irq(scsi_cmd->device->host->host_lock); 3866 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL); 3867 spin_lock_irq(scsi_cmd->device->host->host_lock); 3868 } else 3869 rc = ipr_device_reset(ioa_cfg, res); 3870 res->resetting_device = 0; 3871 3872 LEAVE; 3873 return (rc ? FAILED : SUCCESS); 3874} 3875 3876static int ipr_eh_dev_reset(struct scsi_cmnd * cmd) 3877{ 3878 int rc; 3879 3880 spin_lock_irq(cmd->device->host->host_lock); 3881 rc = __ipr_eh_dev_reset(cmd); 3882 spin_unlock_irq(cmd->device->host->host_lock); 3883 3884 return rc; 3885} 3886 3887/** 3888 * ipr_bus_reset_done - Op done function for bus reset. 3889 * @ipr_cmd: ipr command struct 3890 * 3891 * This function is the op done function for a bus reset 3892 * 3893 * Return value: 3894 * none 3895 **/ 3896static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 3897{ 3898 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3899 struct ipr_resource_entry *res; 3900 3901 ENTER; 3902 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3903 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle, 3904 sizeof(res->cfgte.res_handle))) { 3905 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus); 3906 break; 3907 } 3908 } 3909 3910 /* 3911 * If abort has not completed, indicate the reset has, else call the 3912 * abort's done function to wake the sleeping eh thread 3913 */ 3914 if (ipr_cmd->sibling->sibling) 3915 ipr_cmd->sibling->sibling = NULL; 3916 else 3917 ipr_cmd->sibling->done(ipr_cmd->sibling); 3918 3919 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3920 LEAVE; 3921} 3922 3923/** 3924 * ipr_abort_timeout - An abort task has timed out 3925 * @ipr_cmd: ipr command struct 3926 * 3927 * This function handles when an abort task times out. If this 3928 * happens we issue a bus reset since we have resources tied 3929 * up that must be freed before returning to the midlayer. 3930 * 3931 * Return value: 3932 * none 3933 **/ 3934static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 3935{ 3936 struct ipr_cmnd *reset_cmd; 3937 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3938 struct ipr_cmd_pkt *cmd_pkt; 3939 unsigned long lock_flags = 0; 3940 3941 ENTER; 3942 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3943 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 3944 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3945 return; 3946 } 3947 3948 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n"); 3949 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3950 ipr_cmd->sibling = reset_cmd; 3951 reset_cmd->sibling = ipr_cmd; 3952 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 3953 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 3954 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3955 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 3956 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 3957 3958 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 3959 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3960 LEAVE; 3961} 3962 3963/** 3964 * ipr_cancel_op - Cancel specified op 3965 * @scsi_cmd: scsi command struct 3966 * 3967 * This function cancels specified op. 3968 * 3969 * Return value: 3970 * SUCCESS / FAILED 3971 **/ 3972static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) 3973{ 3974 struct ipr_cmnd *ipr_cmd; 3975 struct ipr_ioa_cfg *ioa_cfg; 3976 struct ipr_resource_entry *res; 3977 struct ipr_cmd_pkt *cmd_pkt; 3978 u32 ioasc; 3979 int op_found = 0; 3980 3981 ENTER; 3982 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 3983 res = scsi_cmd->device->hostdata; 3984 3985 /* If we are currently going through reset/reload, return failed. 3986 * This will force the mid-layer to call ipr_eh_host_reset, 3987 * which will then go to sleep and wait for the reset to complete 3988 */ 3989 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) 3990 return FAILED; 3991 if (!res || !ipr_is_gscsi(res)) 3992 return FAILED; 3993 3994 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3995 if (ipr_cmd->scsi_cmd == scsi_cmd) { 3996 ipr_cmd->done = ipr_scsi_eh_done; 3997 op_found = 1; 3998 break; 3999 } 4000 } 4001 4002 if (!op_found) 4003 return SUCCESS; 4004 4005 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4006 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 4007 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4008 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4009 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4010 ipr_cmd->u.sdev = scsi_cmd->device; 4011 4012 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n", 4013 scsi_cmd->cmnd[0]); 4014 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 4015 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4016 4017 /* 4018 * If the abort task timed out and we sent a bus reset, we will get 4019 * one the following responses to the abort 4020 */ 4021 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 4022 ioasc = 0; 4023 ipr_trace; 4024 } 4025 4026 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4027 if (!ipr_is_naca_model(res)) 4028 res->needs_sync_complete = 1; 4029 4030 LEAVE; 4031 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); 4032} 4033 4034/** 4035 * ipr_eh_abort - Abort a single op 4036 * @scsi_cmd: scsi command struct 4037 * 4038 * Return value: 4039 * SUCCESS / FAILED 4040 **/ 4041static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) 4042{ 4043 unsigned long flags; 4044 int rc; 4045 4046 ENTER; 4047 4048 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 4049 rc = ipr_cancel_op(scsi_cmd); 4050 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 4051 4052 LEAVE; 4053 return rc; 4054} 4055 4056/** 4057 * ipr_handle_other_interrupt - Handle "other" interrupts 4058 * @ioa_cfg: ioa config struct 4059 * @int_reg: interrupt register 4060 * 4061 * Return value: 4062 * IRQ_NONE / IRQ_HANDLED 4063 **/ 4064static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 4065 volatile u32 int_reg) 4066{ 4067 irqreturn_t rc = IRQ_HANDLED; 4068 4069 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 4070 /* Mask the interrupt */ 4071 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 4072 4073 /* Clear the interrupt */ 4074 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); 4075 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 4076 4077 list_del(&ioa_cfg->reset_cmd->queue); 4078 del_timer(&ioa_cfg->reset_cmd->timer); 4079 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 4080 } else { 4081 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 4082 ioa_cfg->ioa_unit_checked = 1; 4083 else 4084 dev_err(&ioa_cfg->pdev->dev, 4085 "Permanent IOA failure. 0x%08X\n", int_reg); 4086 4087 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4088 ioa_cfg->sdt_state = GET_DUMP; 4089 4090 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 4091 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4092 } 4093 4094 return rc; 4095} 4096 4097/** 4098 * ipr_isr - Interrupt service routine 4099 * @irq: irq number 4100 * @devp: pointer to ioa config struct 4101 * 4102 * Return value: 4103 * IRQ_NONE / IRQ_HANDLED 4104 **/ 4105static irqreturn_t ipr_isr(int irq, void *devp) 4106{ 4107 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 4108 unsigned long lock_flags = 0; 4109 volatile u32 int_reg, int_mask_reg; 4110 u32 ioasc; 4111 u16 cmd_index; 4112 struct ipr_cmnd *ipr_cmd; 4113 irqreturn_t rc = IRQ_NONE; 4114 4115 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4116 4117 /* If interrupts are disabled, ignore the interrupt */ 4118 if (!ioa_cfg->allow_interrupts) { 4119 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4120 return IRQ_NONE; 4121 } 4122 4123 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 4124 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 4125 4126 /* If an interrupt on the adapter did not occur, ignore it */ 4127 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) { 4128 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4129 return IRQ_NONE; 4130 } 4131 4132 while (1) { 4133 ipr_cmd = NULL; 4134 4135 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 4136 ioa_cfg->toggle_bit) { 4137 4138 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & 4139 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 4140 4141 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { 4142 ioa_cfg->errors_logged++; 4143 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n"); 4144 4145 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4146 ioa_cfg->sdt_state = GET_DUMP; 4147 4148 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4149 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4150 return IRQ_HANDLED; 4151 } 4152 4153 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 4154 4155 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4156 4157 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 4158 4159 list_del(&ipr_cmd->queue); 4160 del_timer(&ipr_cmd->timer); 4161 ipr_cmd->done(ipr_cmd); 4162 4163 rc = IRQ_HANDLED; 4164 4165 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { 4166 ioa_cfg->hrrq_curr++; 4167 } else { 4168 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 4169 ioa_cfg->toggle_bit ^= 1u; 4170 } 4171 } 4172 4173 if (ipr_cmd != NULL) { 4174 /* Clear the PCI interrupt */ 4175 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg); 4176 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 4177 } else 4178 break; 4179 } 4180 4181 if (unlikely(rc == IRQ_NONE)) 4182 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 4183 4184 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4185 return rc; 4186} 4187 4188/** 4189 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 4190 * @ioa_cfg: ioa config struct 4191 * @ipr_cmd: ipr command struct 4192 * 4193 * Return value: 4194 * 0 on success / -1 on failure 4195 **/ 4196static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 4197 struct ipr_cmnd *ipr_cmd) 4198{ 4199 int i; 4200 struct scatterlist *sglist; 4201 u32 length; 4202 u32 ioadl_flags = 0; 4203 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4204 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4205 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4206 4207 length = scsi_cmd->request_bufflen; 4208 4209 if (length == 0) 4210 return 0; 4211 4212 if (scsi_cmd->use_sg) { 4213 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, 4214 scsi_cmd->request_buffer, 4215 scsi_cmd->use_sg, 4216 scsi_cmd->sc_data_direction); 4217 4218 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 4219 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 4220 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4221 ioarcb->write_data_transfer_length = cpu_to_be32(length); 4222 ioarcb->write_ioadl_len = 4223 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 4224 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 4225 ioadl_flags = IPR_IOADL_FLAGS_READ; 4226 ioarcb->read_data_transfer_length = cpu_to_be32(length); 4227 ioarcb->read_ioadl_len = 4228 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 4229 } 4230 4231 sglist = scsi_cmd->request_buffer; 4232 4233 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 4234 ioadl[i].flags_and_data_len = 4235 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i])); 4236 ioadl[i].address = 4237 cpu_to_be32(sg_dma_address(&sglist[i])); 4238 } 4239 4240 if (likely(ipr_cmd->dma_use_sg)) { 4241 ioadl[i-1].flags_and_data_len |= 4242 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 4243 return 0; 4244 } else 4245 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 4246 } else { 4247 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 4248 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 4249 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4250 ioarcb->write_data_transfer_length = cpu_to_be32(length); 4251 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4252 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 4253 ioadl_flags = IPR_IOADL_FLAGS_READ; 4254 ioarcb->read_data_transfer_length = cpu_to_be32(length); 4255 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4256 } 4257 4258 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev, 4259 scsi_cmd->request_buffer, length, 4260 scsi_cmd->sc_data_direction); 4261 4262 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) { 4263 ipr_cmd->dma_use_sg = 1; 4264 ioadl[0].flags_and_data_len = 4265 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST); 4266 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle); 4267 return 0; 4268 } else 4269 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n"); 4270 } 4271 4272 return -1; 4273} 4274 4275/** 4276 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes 4277 * @scsi_cmd: scsi command struct 4278 * 4279 * Return value: 4280 * task attributes 4281 **/ 4282static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) 4283{ 4284 u8 tag[2]; 4285 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; 4286 4287 if (scsi_populate_tag_msg(scsi_cmd, tag)) { 4288 switch (tag[0]) { 4289 case MSG_SIMPLE_TAG: 4290 rc = IPR_FLAGS_LO_SIMPLE_TASK; 4291 break; 4292 case MSG_HEAD_TAG: 4293 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; 4294 break; 4295 case MSG_ORDERED_TAG: 4296 rc = IPR_FLAGS_LO_ORDERED_TASK; 4297 break; 4298 }; 4299 } 4300 4301 return rc; 4302} 4303 4304/** 4305 * ipr_erp_done - Process completion of ERP for a device 4306 * @ipr_cmd: ipr command struct 4307 * 4308 * This function copies the sense buffer into the scsi_cmd 4309 * struct and pushes the scsi_done function. 4310 * 4311 * Return value: 4312 * nothing 4313 **/ 4314static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 4315{ 4316 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4317 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4318 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4319 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4320 4321 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 4322 scsi_cmd->result |= (DID_ERROR << 16); 4323 scmd_printk(KERN_ERR, scsi_cmd, 4324 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 4325 } else { 4326 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 4327 SCSI_SENSE_BUFFERSIZE); 4328 } 4329 4330 if (res) { 4331 if (!ipr_is_naca_model(res)) 4332 res->needs_sync_complete = 1; 4333 res->in_erp = 0; 4334 } 4335 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 4336 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4337 scsi_cmd->scsi_done(scsi_cmd); 4338} 4339 4340/** 4341 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 4342 * @ipr_cmd: ipr command struct 4343 * 4344 * Return value: 4345 * none 4346 **/ 4347static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 4348{ 4349 struct ipr_ioarcb *ioarcb; 4350 struct ipr_ioasa *ioasa; 4351 4352 ioarcb = &ipr_cmd->ioarcb; 4353 ioasa = &ipr_cmd->ioasa; 4354 4355 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 4356 ioarcb->write_data_transfer_length = 0; 4357 ioarcb->read_data_transfer_length = 0; 4358 ioarcb->write_ioadl_len = 0; 4359 ioarcb->read_ioadl_len = 0; 4360 ioasa->ioasc = 0; 4361 ioasa->residual_data_len = 0; 4362} 4363 4364/** 4365 * ipr_erp_request_sense - Send request sense to a device 4366 * @ipr_cmd: ipr command struct 4367 * 4368 * This function sends a request sense to a device as a result 4369 * of a check condition. 4370 * 4371 * Return value: 4372 * nothing 4373 **/ 4374static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 4375{ 4376 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4377 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4378 4379 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 4380 ipr_erp_done(ipr_cmd); 4381 return; 4382 } 4383 4384 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 4385 4386 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 4387 cmd_pkt->cdb[0] = REQUEST_SENSE; 4388 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 4389 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 4390 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 4391 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 4392 4393 ipr_cmd->ioadl[0].flags_and_data_len = 4394 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE); 4395 ipr_cmd->ioadl[0].address = 4396 cpu_to_be32(ipr_cmd->sense_buffer_dma); 4397 4398 ipr_cmd->ioarcb.read_ioadl_len = 4399 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4400 ipr_cmd->ioarcb.read_data_transfer_length = 4401 cpu_to_be32(SCSI_SENSE_BUFFERSIZE); 4402 4403 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 4404 IPR_REQUEST_SENSE_TIMEOUT * 2); 4405} 4406 4407/** 4408 * ipr_erp_cancel_all - Send cancel all to a device 4409 * @ipr_cmd: ipr command struct 4410 * 4411 * This function sends a cancel all to a device to clear the 4412 * queue. If we are running TCQ on the device, QERR is set to 1, 4413 * which means all outstanding ops have been dropped on the floor. 4414 * Cancel all will return them to us. 4415 * 4416 * Return value: 4417 * nothing 4418 **/ 4419static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 4420{ 4421 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4422 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4423 struct ipr_cmd_pkt *cmd_pkt; 4424 4425 res->in_erp = 1; 4426 4427 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 4428 4429 if (!scsi_get_tag_type(scsi_cmd->device)) { 4430 ipr_erp_request_sense(ipr_cmd); 4431 return; 4432 } 4433 4434 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4435 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4436 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4437 4438 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 4439 IPR_CANCEL_ALL_TIMEOUT); 4440} 4441 4442/** 4443 * ipr_dump_ioasa - Dump contents of IOASA 4444 * @ioa_cfg: ioa config struct 4445 * @ipr_cmd: ipr command struct 4446 * @res: resource entry struct 4447 * 4448 * This function is invoked by the interrupt handler when ops 4449 * fail. It will log the IOASA if appropriate. Only called 4450 * for GPDD ops. 4451 * 4452 * Return value: 4453 * none 4454 **/ 4455static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 4456 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res) 4457{ 4458 int i; 4459 u16 data_len; 4460 u32 ioasc; 4461 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4462 __be32 *ioasa_data = (__be32 *)ioasa; 4463 int error_index; 4464 4465 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK; 4466 4467 if (0 == ioasc) 4468 return; 4469 4470 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 4471 return; 4472 4473 error_index = ipr_get_error(ioasc); 4474 4475 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 4476 /* Don't log an error if the IOA already logged one */ 4477 if (ioasa->ilid != 0) 4478 return; 4479 4480 if (ipr_error_table[error_index].log_ioasa == 0) 4481 return; 4482 } 4483 4484 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error); 4485 4486 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len)) 4487 data_len = sizeof(struct ipr_ioasa); 4488 else 4489 data_len = be16_to_cpu(ioasa->ret_stat_len); 4490 4491 ipr_err("IOASA Dump:\n"); 4492 4493 for (i = 0; i < data_len / 4; i += 4) { 4494 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 4495 be32_to_cpu(ioasa_data[i]), 4496 be32_to_cpu(ioasa_data[i+1]), 4497 be32_to_cpu(ioasa_data[i+2]), 4498 be32_to_cpu(ioasa_data[i+3])); 4499 } 4500} 4501 4502/** 4503 * ipr_gen_sense - Generate SCSI sense data from an IOASA 4504 * @ioasa: IOASA 4505 * @sense_buf: sense data buffer 4506 * 4507 * Return value: 4508 * none 4509 **/ 4510static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 4511{ 4512 u32 failing_lba; 4513 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 4514 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 4515 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4516 u32 ioasc = be32_to_cpu(ioasa->ioasc); 4517 4518 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 4519 4520 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 4521 return; 4522 4523 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 4524 4525 if (ipr_is_vset_device(res) && 4526 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 4527 ioasa->u.vset.failing_lba_hi != 0) { 4528 sense_buf[0] = 0x72; 4529 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 4530 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 4531 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 4532 4533 sense_buf[7] = 12; 4534 sense_buf[8] = 0; 4535 sense_buf[9] = 0x0A; 4536 sense_buf[10] = 0x80; 4537 4538 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 4539 4540 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 4541 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 4542 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 4543 sense_buf[15] = failing_lba & 0x000000ff; 4544 4545 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 4546 4547 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 4548 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 4549 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 4550 sense_buf[19] = failing_lba & 0x000000ff; 4551 } else { 4552 sense_buf[0] = 0x70; 4553 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 4554 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 4555 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 4556 4557 /* Illegal request */ 4558 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 4559 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 4560 sense_buf[7] = 10; /* additional length */ 4561 4562 /* IOARCB was in error */ 4563 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 4564 sense_buf[15] = 0xC0; 4565 else /* Parameter data was invalid */ 4566 sense_buf[15] = 0x80; 4567 4568 sense_buf[16] = 4569 ((IPR_FIELD_POINTER_MASK & 4570 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff; 4571 sense_buf[17] = 4572 (IPR_FIELD_POINTER_MASK & 4573 be32_to_cpu(ioasa->ioasc_specific)) & 0xff; 4574 } else { 4575 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 4576 if (ipr_is_vset_device(res)) 4577 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 4578 else 4579 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 4580 4581 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 4582 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 4583 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 4584 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 4585 sense_buf[6] = failing_lba & 0x000000ff; 4586 } 4587 4588 sense_buf[7] = 6; /* additional length */ 4589 } 4590 } 4591} 4592 4593/** 4594 * ipr_get_autosense - Copy autosense data to sense buffer 4595 * @ipr_cmd: ipr command struct 4596 * 4597 * This function copies the autosense buffer to the buffer 4598 * in the scsi_cmd, if there is autosense available. 4599 * 4600 * Return value: 4601 * 1 if autosense was available / 0 if not 4602 **/ 4603static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) 4604{ 4605 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4606 4607 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0) 4608 return 0; 4609 4610 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, 4611 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), 4612 SCSI_SENSE_BUFFERSIZE)); 4613 return 1; 4614} 4615 4616/** 4617 * ipr_erp_start - Process an error response for a SCSI op 4618 * @ioa_cfg: ioa config struct 4619 * @ipr_cmd: ipr command struct 4620 * 4621 * This function determines whether or not to initiate ERP 4622 * on the affected device. 4623 * 4624 * Return value: 4625 * nothing 4626 **/ 4627static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 4628 struct ipr_cmnd *ipr_cmd) 4629{ 4630 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4631 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4632 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4633 4634 if (!res) { 4635 ipr_scsi_eh_done(ipr_cmd); 4636 return; 4637 } 4638 4639 if (ipr_is_gscsi(res)) 4640 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 4641 else 4642 ipr_gen_sense(ipr_cmd); 4643 4644 switch (ioasc & IPR_IOASC_IOASC_MASK) { 4645 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 4646 if (ipr_is_naca_model(res)) 4647 scsi_cmd->result |= (DID_ABORT << 16); 4648 else 4649 scsi_cmd->result |= (DID_IMM_RETRY << 16); 4650 break; 4651 case IPR_IOASC_IR_RESOURCE_HANDLE: 4652 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: 4653 scsi_cmd->result |= (DID_NO_CONNECT << 16); 4654 break; 4655 case IPR_IOASC_HW_SEL_TIMEOUT: 4656 scsi_cmd->result |= (DID_NO_CONNECT << 16); 4657 if (!ipr_is_naca_model(res)) 4658 res->needs_sync_complete = 1; 4659 break; 4660 case IPR_IOASC_SYNC_REQUIRED: 4661 if (!res->in_erp) 4662 res->needs_sync_complete = 1; 4663 scsi_cmd->result |= (DID_IMM_RETRY << 16); 4664 break; 4665 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 4666 case IPR_IOASA_IR_DUAL_IOA_DISABLED: 4667 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 4668 break; 4669 case IPR_IOASC_BUS_WAS_RESET: 4670 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 4671 /* 4672 * Report the bus reset and ask for a retry. The device 4673 * will give CC/UA the next command. 4674 */ 4675 if (!res->resetting_device) 4676 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 4677 scsi_cmd->result |= (DID_ERROR << 16); 4678 if (!ipr_is_naca_model(res)) 4679 res->needs_sync_complete = 1; 4680 break; 4681 case IPR_IOASC_HW_DEV_BUS_STATUS: 4682 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 4683 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 4684 if (!ipr_get_autosense(ipr_cmd)) { 4685 if (!ipr_is_naca_model(res)) { 4686 ipr_erp_cancel_all(ipr_cmd); 4687 return; 4688 } 4689 } 4690 } 4691 if (!ipr_is_naca_model(res)) 4692 res->needs_sync_complete = 1; 4693 break; 4694 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 4695 break; 4696 default: 4697 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 4698 scsi_cmd->result |= (DID_ERROR << 16); 4699 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) 4700 res->needs_sync_complete = 1; 4701 break; 4702 } 4703 4704 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 4705 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4706 scsi_cmd->scsi_done(scsi_cmd); 4707} 4708 4709/** 4710 * ipr_scsi_done - mid-layer done function 4711 * @ipr_cmd: ipr command struct 4712 * 4713 * This function is invoked by the interrupt handler for 4714 * ops generated by the SCSI mid-layer 4715 * 4716 * Return value: 4717 * none 4718 **/ 4719static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 4720{ 4721 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4722 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4723 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4724 4725 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len); 4726 4727 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 4728 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 4729 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4730 scsi_cmd->scsi_done(scsi_cmd); 4731 } else 4732 ipr_erp_start(ioa_cfg, ipr_cmd); 4733} 4734 4735/** 4736 * ipr_queuecommand - Queue a mid-layer request 4737 * @scsi_cmd: scsi command struct 4738 * @done: done function 4739 * 4740 * This function queues a request generated by the mid-layer. 4741 * 4742 * Return value: 4743 * 0 on success 4744 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 4745 * SCSI_MLQUEUE_HOST_BUSY if host is busy 4746 **/ 4747static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, 4748 void (*done) (struct scsi_cmnd *)) 4749{ 4750 struct ipr_ioa_cfg *ioa_cfg; 4751 struct ipr_resource_entry *res; 4752 struct ipr_ioarcb *ioarcb; 4753 struct ipr_cmnd *ipr_cmd; 4754 int rc = 0; 4755 4756 scsi_cmd->scsi_done = done; 4757 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 4758 res = scsi_cmd->device->hostdata; 4759 scsi_cmd->result = (DID_OK << 16); 4760 4761 /* 4762 * We are currently blocking all devices due to a host reset 4763 * We have told the host to stop giving us new requests, but 4764 * ERP ops don't count. FIXME 4765 */ 4766 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) 4767 return SCSI_MLQUEUE_HOST_BUSY; 4768 4769 /* 4770 * FIXME - Create scsi_set_host_offline interface 4771 * and the ioa_is_dead check can be removed 4772 */ 4773 if (unlikely(ioa_cfg->ioa_is_dead || !res)) { 4774 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 4775 scsi_cmd->result = (DID_NO_CONNECT << 16); 4776 scsi_cmd->scsi_done(scsi_cmd); 4777 return 0; 4778 } 4779 4780 if (ipr_is_gata(res) && res->sata_port) 4781 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap); 4782 4783 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4784 ioarcb = &ipr_cmd->ioarcb; 4785 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 4786 4787 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 4788 ipr_cmd->scsi_cmd = scsi_cmd; 4789 ioarcb->res_handle = res->cfgte.res_handle; 4790 ipr_cmd->done = ipr_scsi_done; 4791 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 4792 4793 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 4794 if (scsi_cmd->underflow == 0) 4795 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 4796 4797 if (res->needs_sync_complete) { 4798 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 4799 res->needs_sync_complete = 0; 4800 } 4801 4802 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 4803 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 4804 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 4805 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); 4806 } 4807 4808 if (scsi_cmd->cmnd[0] >= 0xC0 && 4809 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) 4810 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4811 4812 if (likely(rc == 0)) 4813 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 4814 4815 if (likely(rc == 0)) { 4816 mb(); 4817 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 4818 ioa_cfg->regs.ioarrin_reg); 4819 } else { 4820 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4821 return SCSI_MLQUEUE_HOST_BUSY; 4822 } 4823 4824 return 0; 4825} 4826 4827/** 4828 * ipr_ioctl - IOCTL handler 4829 * @sdev: scsi device struct 4830 * @cmd: IOCTL cmd 4831 * @arg: IOCTL arg 4832 * 4833 * Return value: 4834 * 0 on success / other on failure 4835 **/ 4836static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) 4837{ 4838 struct ipr_resource_entry *res; 4839 4840 res = (struct ipr_resource_entry *)sdev->hostdata; 4841 if (res && ipr_is_gata(res)) 4842 return ata_scsi_ioctl(sdev, cmd, arg); 4843 4844 return -EINVAL; 4845} 4846 4847/** 4848 * ipr_info - Get information about the card/driver 4849 * @scsi_host: scsi host struct 4850 * 4851 * Return value: 4852 * pointer to buffer with description string 4853 **/ 4854static const char * ipr_ioa_info(struct Scsi_Host *host) 4855{ 4856 static char buffer[512]; 4857 struct ipr_ioa_cfg *ioa_cfg; 4858 unsigned long lock_flags = 0; 4859 4860 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 4861 4862 spin_lock_irqsave(host->host_lock, lock_flags); 4863 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 4864 spin_unlock_irqrestore(host->host_lock, lock_flags); 4865 4866 return buffer; 4867} 4868 4869static struct scsi_host_template driver_template = { 4870 .module = THIS_MODULE, 4871 .name = "IPR", 4872 .info = ipr_ioa_info, 4873 .ioctl = ipr_ioctl, 4874 .queuecommand = ipr_queuecommand, 4875 .eh_abort_handler = ipr_eh_abort, 4876 .eh_device_reset_handler = ipr_eh_dev_reset, 4877 .eh_host_reset_handler = ipr_eh_host_reset, 4878 .slave_alloc = ipr_slave_alloc, 4879 .slave_configure = ipr_slave_configure, 4880 .slave_destroy = ipr_slave_destroy, 4881 .target_alloc = ipr_target_alloc, 4882 .target_destroy = ipr_target_destroy, 4883 .change_queue_depth = ipr_change_queue_depth, 4884 .change_queue_type = ipr_change_queue_type, 4885 .bios_param = ipr_biosparam, 4886 .can_queue = IPR_MAX_COMMANDS, 4887 .this_id = -1, 4888 .sg_tablesize = IPR_MAX_SGLIST, 4889 .max_sectors = IPR_IOA_MAX_SECTORS, 4890 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 4891 .use_clustering = ENABLE_CLUSTERING, 4892 .shost_attrs = ipr_ioa_attrs, 4893 .sdev_attrs = ipr_dev_attrs, 4894 .proc_name = IPR_NAME 4895}; 4896 4897/** 4898 * ipr_ata_phy_reset - libata phy_reset handler 4899 * @ap: ata port to reset 4900 * 4901 **/ 4902static void ipr_ata_phy_reset(struct ata_port *ap) 4903{ 4904 unsigned long flags; 4905 struct ipr_sata_port *sata_port = ap->private_data; 4906 struct ipr_resource_entry *res = sata_port->res; 4907 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 4908 int rc; 4909 4910 ENTER; 4911 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4912 while(ioa_cfg->in_reset_reload) { 4913 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4914 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4915 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4916 } 4917 4918 if (!ioa_cfg->allow_cmds) 4919 goto out_unlock; 4920 4921 rc = ipr_device_reset(ioa_cfg, res); 4922 4923 if (rc) { 4924 ap->ops->port_disable(ap); 4925 goto out_unlock; 4926 } 4927 4928 switch(res->cfgte.proto) { 4929 case IPR_PROTO_SATA: 4930 case IPR_PROTO_SAS_STP: 4931 ap->device[0].class = ATA_DEV_ATA; 4932 break; 4933 case IPR_PROTO_SATA_ATAPI: 4934 case IPR_PROTO_SAS_STP_ATAPI: 4935 ap->device[0].class = ATA_DEV_ATAPI; 4936 break; 4937 default: 4938 ap->device[0].class = ATA_DEV_UNKNOWN; 4939 ap->ops->port_disable(ap); 4940 break; 4941 }; 4942 4943out_unlock: 4944 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4945 LEAVE; 4946} 4947 4948/** 4949 * ipr_ata_post_internal - Cleanup after an internal command 4950 * @qc: ATA queued command 4951 * 4952 * Return value: 4953 * none 4954 **/ 4955static void ipr_ata_post_internal(struct ata_queued_cmd *qc) 4956{ 4957 struct ipr_sata_port *sata_port = qc->ap->private_data; 4958 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 4959 struct ipr_cmnd *ipr_cmd; 4960 unsigned long flags; 4961 4962 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4963 while(ioa_cfg->in_reset_reload) { 4964 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4965 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4966 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4967 } 4968 4969 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4970 if (ipr_cmd->qc == qc) { 4971 ipr_device_reset(ioa_cfg, sata_port->res); 4972 break; 4973 } 4974 } 4975 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4976} 4977 4978/** 4979 * ipr_tf_read - Read the current ATA taskfile for the ATA port 4980 * @ap: ATA port 4981 * @tf: destination ATA taskfile 4982 * 4983 * Return value: 4984 * none 4985 **/ 4986static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf) 4987{ 4988 struct ipr_sata_port *sata_port = ap->private_data; 4989 struct ipr_ioasa_gata *g = &sata_port->ioasa; 4990 4991 tf->feature = g->error; 4992 tf->nsect = g->nsect; 4993 tf->lbal = g->lbal; 4994 tf->lbam = g->lbam; 4995 tf->lbah = g->lbah; 4996 tf->device = g->device; 4997 tf->command = g->status; 4998 tf->hob_nsect = g->hob_nsect; 4999 tf->hob_lbal = g->hob_lbal; 5000 tf->hob_lbam = g->hob_lbam; 5001 tf->hob_lbah = g->hob_lbah; 5002 tf->ctl = g->alt_status; 5003} 5004 5005/** 5006 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure 5007 * @regs: destination 5008 * @tf: source ATA taskfile 5009 * 5010 * Return value: 5011 * none 5012 **/ 5013static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs, 5014 struct ata_taskfile *tf) 5015{ 5016 regs->feature = tf->feature; 5017 regs->nsect = tf->nsect; 5018 regs->lbal = tf->lbal; 5019 regs->lbam = tf->lbam; 5020 regs->lbah = tf->lbah; 5021 regs->device = tf->device; 5022 regs->command = tf->command; 5023 regs->hob_feature = tf->hob_feature; 5024 regs->hob_nsect = tf->hob_nsect; 5025 regs->hob_lbal = tf->hob_lbal; 5026 regs->hob_lbam = tf->hob_lbam; 5027 regs->hob_lbah = tf->hob_lbah; 5028 regs->ctl = tf->ctl; 5029} 5030 5031/** 5032 * ipr_sata_done - done function for SATA commands 5033 * @ipr_cmd: ipr command struct 5034 * 5035 * This function is invoked by the interrupt handler for 5036 * ops generated by the SCSI mid-layer to SATA devices 5037 * 5038 * Return value: 5039 * none 5040 **/ 5041static void ipr_sata_done(struct ipr_cmnd *ipr_cmd) 5042{ 5043 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5044 struct ata_queued_cmd *qc = ipr_cmd->qc; 5045 struct ipr_sata_port *sata_port = qc->ap->private_data; 5046 struct ipr_resource_entry *res = sata_port->res; 5047 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5048 5049 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata, 5050 sizeof(struct ipr_ioasa_gata)); 5051 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 5052 5053 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET) 5054 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus, 5055 res->cfgte.res_addr.target); 5056 5057 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 5058 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status); 5059 else 5060 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status); 5061 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5062 ata_qc_complete(qc); 5063} 5064 5065/** 5066 * ipr_build_ata_ioadl - Build an ATA scatter/gather list 5067 * @ipr_cmd: ipr command struct 5068 * @qc: ATA queued command 5069 * 5070 **/ 5071static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, 5072 struct ata_queued_cmd *qc) 5073{ 5074 u32 ioadl_flags = 0; 5075 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5076 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5077 int len = qc->nbytes + qc->pad_len; 5078 struct scatterlist *sg; 5079 5080 if (len == 0) 5081 return; 5082 5083 if (qc->dma_dir == DMA_TO_DEVICE) { 5084 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5085 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5086 ioarcb->write_data_transfer_length = cpu_to_be32(len); 5087 ioarcb->write_ioadl_len = 5088 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5089 } else if (qc->dma_dir == DMA_FROM_DEVICE) { 5090 ioadl_flags = IPR_IOADL_FLAGS_READ; 5091 ioarcb->read_data_transfer_length = cpu_to_be32(len); 5092 ioarcb->read_ioadl_len = 5093 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5094 } 5095 5096 ata_for_each_sg(sg, qc) { 5097 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 5098 ioadl->address = cpu_to_be32(sg_dma_address(sg)); 5099 if (ata_sg_is_last(sg, qc)) 5100 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5101 else 5102 ioadl++; 5103 } 5104} 5105 5106/** 5107 * ipr_qc_issue - Issue a SATA qc to a device 5108 * @qc: queued command 5109 * 5110 * Return value: 5111 * 0 if success 5112 **/ 5113static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) 5114{ 5115 struct ata_port *ap = qc->ap; 5116 struct ipr_sata_port *sata_port = ap->private_data; 5117 struct ipr_resource_entry *res = sata_port->res; 5118 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5119 struct ipr_cmnd *ipr_cmd; 5120 struct ipr_ioarcb *ioarcb; 5121 struct ipr_ioarcb_ata_regs *regs; 5122 5123 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead)) 5124 return -EIO; 5125 5126 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5127 ioarcb = &ipr_cmd->ioarcb; 5128 regs = &ioarcb->add_data.u.regs; 5129 5130 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data)); 5131 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs)); 5132 5133 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 5134 ipr_cmd->qc = qc; 5135 ipr_cmd->done = ipr_sata_done; 5136 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 5137 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU; 5138 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 5139 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 5140 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem; 5141 5142 ipr_build_ata_ioadl(ipr_cmd, qc); 5143 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 5144 ipr_copy_sata_tf(regs, &qc->tf); 5145 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN); 5146 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 5147 5148 switch (qc->tf.protocol) { 5149 case ATA_PROT_NODATA: 5150 case ATA_PROT_PIO: 5151 break; 5152 5153 case ATA_PROT_DMA: 5154 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 5155 break; 5156 5157 case ATA_PROT_ATAPI: 5158 case ATA_PROT_ATAPI_NODATA: 5159 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 5160 break; 5161 5162 case ATA_PROT_ATAPI_DMA: 5163 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 5164 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 5165 break; 5166 5167 default: 5168 WARN_ON(1); 5169 return -1; 5170 } 5171 5172 mb(); 5173 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr), 5174 ioa_cfg->regs.ioarrin_reg); 5175 return 0; 5176} 5177 5178/** 5179 * ipr_ata_check_status - Return last ATA status 5180 * @ap: ATA port 5181 * 5182 * Return value: 5183 * ATA status 5184 **/ 5185static u8 ipr_ata_check_status(struct ata_port *ap) 5186{ 5187 struct ipr_sata_port *sata_port = ap->private_data; 5188 return sata_port->ioasa.status; 5189} 5190 5191/** 5192 * ipr_ata_check_altstatus - Return last ATA altstatus 5193 * @ap: ATA port 5194 * 5195 * Return value: 5196 * Alt ATA status 5197 **/ 5198static u8 ipr_ata_check_altstatus(struct ata_port *ap) 5199{ 5200 struct ipr_sata_port *sata_port = ap->private_data; 5201 return sata_port->ioasa.alt_status; 5202} 5203 5204static struct ata_port_operations ipr_sata_ops = { 5205 .port_disable = ata_port_disable, 5206 .check_status = ipr_ata_check_status, 5207 .check_altstatus = ipr_ata_check_altstatus, 5208 .dev_select = ata_noop_dev_select, 5209 .phy_reset = ipr_ata_phy_reset, 5210 .post_internal_cmd = ipr_ata_post_internal, 5211 .tf_read = ipr_tf_read, 5212 .qc_prep = ata_noop_qc_prep, 5213 .qc_issue = ipr_qc_issue, 5214 .port_start = ata_sas_port_start, 5215 .port_stop = ata_sas_port_stop 5216}; 5217 5218static struct ata_port_info sata_port_info = { 5219 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET | 5220 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA, 5221 .pio_mask = 0x10, /* pio4 */ 5222 .mwdma_mask = 0x07, 5223 .udma_mask = 0x7f, /* udma0-6 */ 5224 .port_ops = &ipr_sata_ops 5225}; 5226 5227#ifdef CONFIG_PPC_PSERIES 5228static const u16 ipr_blocked_processors[] = { 5229 PV_NORTHSTAR, 5230 PV_PULSAR, 5231 PV_POWER4, 5232 PV_ICESTAR, 5233 PV_SSTAR, 5234 PV_POWER4p, 5235 PV_630, 5236 PV_630p 5237}; 5238 5239/** 5240 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 5241 * @ioa_cfg: ioa cfg struct 5242 * 5243 * Adapters that use Gemstone revision < 3.1 do not work reliably on 5244 * certain pSeries hardware. This function determines if the given 5245 * adapter is in one of these confgurations or not. 5246 * 5247 * Return value: 5248 * 1 if adapter is not supported / 0 if adapter is supported 5249 **/ 5250static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 5251{ 5252 u8 rev_id; 5253 int i; 5254 5255 if (ioa_cfg->type == 0x5702) { 5256 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID, 5257 &rev_id) == PCIBIOS_SUCCESSFUL) { 5258 if (rev_id < 4) { 5259 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ 5260 if (__is_processor(ipr_blocked_processors[i])) 5261 return 1; 5262 } 5263 } 5264 } 5265 } 5266 return 0; 5267} 5268#else 5269#define ipr_invalid_adapter(ioa_cfg) 0 5270#endif 5271 5272/** 5273 * ipr_ioa_bringdown_done - IOA bring down completion. 5274 * @ipr_cmd: ipr command struct 5275 * 5276 * This function processes the completion of an adapter bring down. 5277 * It wakes any reset sleepers. 5278 * 5279 * Return value: 5280 * IPR_RC_JOB_RETURN 5281 **/ 5282static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 5283{ 5284 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5285 5286 ENTER; 5287 ioa_cfg->in_reset_reload = 0; 5288 ioa_cfg->reset_retries = 0; 5289 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5290 wake_up_all(&ioa_cfg->reset_wait_q); 5291 5292 spin_unlock_irq(ioa_cfg->host->host_lock); 5293 scsi_unblock_requests(ioa_cfg->host); 5294 spin_lock_irq(ioa_cfg->host->host_lock); 5295 LEAVE; 5296 5297 return IPR_RC_JOB_RETURN; 5298} 5299 5300/** 5301 * ipr_ioa_reset_done - IOA reset completion. 5302 * @ipr_cmd: ipr command struct 5303 * 5304 * This function processes the completion of an adapter reset. 5305 * It schedules any necessary mid-layer add/removes and 5306 * wakes any reset sleepers. 5307 * 5308 * Return value: 5309 * IPR_RC_JOB_RETURN 5310 **/ 5311static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 5312{ 5313 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5314 struct ipr_resource_entry *res; 5315 struct ipr_hostrcb *hostrcb, *temp; 5316 int i = 0; 5317 5318 ENTER; 5319 ioa_cfg->in_reset_reload = 0; 5320 ioa_cfg->allow_cmds = 1; 5321 ioa_cfg->reset_cmd = NULL; 5322 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 5323 5324 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 5325 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { 5326 ipr_trace; 5327 break; 5328 } 5329 } 5330 schedule_work(&ioa_cfg->work_q); 5331 5332 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { 5333 list_del(&hostrcb->queue); 5334 if (i++ < IPR_NUM_LOG_HCAMS) 5335 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 5336 else 5337 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 5338 } 5339 5340 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 5341 5342 ioa_cfg->reset_retries = 0; 5343 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5344 wake_up_all(&ioa_cfg->reset_wait_q); 5345 5346 spin_unlock_irq(ioa_cfg->host->host_lock); 5347 scsi_unblock_requests(ioa_cfg->host); 5348 spin_lock_irq(ioa_cfg->host->host_lock); 5349 5350 if (!ioa_cfg->allow_cmds) 5351 scsi_block_requests(ioa_cfg->host); 5352 5353 LEAVE; 5354 return IPR_RC_JOB_RETURN; 5355} 5356 5357/** 5358 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 5359 * @supported_dev: supported device struct 5360 * @vpids: vendor product id struct 5361 * 5362 * Return value: 5363 * none 5364 **/ 5365static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 5366 struct ipr_std_inq_vpids *vpids) 5367{ 5368 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 5369 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 5370 supported_dev->num_records = 1; 5371 supported_dev->data_length = 5372 cpu_to_be16(sizeof(struct ipr_supported_device)); 5373 supported_dev->reserved = 0; 5374} 5375 5376/** 5377 * ipr_set_supported_devs - Send Set Supported Devices for a device 5378 * @ipr_cmd: ipr command struct 5379 * 5380 * This function send a Set Supported Devices to the adapter 5381 * 5382 * Return value: 5383 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5384 **/ 5385static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 5386{ 5387 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5388 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 5389 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5390 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5391 struct ipr_resource_entry *res = ipr_cmd->u.res; 5392 5393 ipr_cmd->job_step = ipr_ioa_reset_done; 5394 5395 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 5396 if (!ipr_is_scsi_disk(res)) 5397 continue; 5398 5399 ipr_cmd->u.res = res; 5400 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids); 5401 5402 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5403 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5404 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5405 5406 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 5407 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 5408 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 5409 5410 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | 5411 sizeof(struct ipr_supported_device)); 5412 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma + 5413 offsetof(struct ipr_misc_cbs, supp_dev)); 5414 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5415 ioarcb->write_data_transfer_length = 5416 cpu_to_be32(sizeof(struct ipr_supported_device)); 5417 5418 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 5419 IPR_SET_SUP_DEVICE_TIMEOUT); 5420 5421 ipr_cmd->job_step = ipr_set_supported_devs; 5422 return IPR_RC_JOB_RETURN; 5423 } 5424 5425 return IPR_RC_JOB_CONTINUE; 5426} 5427 5428/** 5429 * ipr_setup_write_cache - Disable write cache if needed 5430 * @ipr_cmd: ipr command struct 5431 * 5432 * This function sets up adapters write cache to desired setting 5433 * 5434 * Return value: 5435 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5436 **/ 5437static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd) 5438{ 5439 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5440 5441 ipr_cmd->job_step = ipr_set_supported_devs; 5442 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 5443 struct ipr_resource_entry, queue); 5444 5445 if (ioa_cfg->cache_state != CACHE_DISABLED) 5446 return IPR_RC_JOB_CONTINUE; 5447 5448 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5449 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5450 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 5451 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 5452 5453 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5454 5455 return IPR_RC_JOB_RETURN; 5456} 5457 5458/** 5459 * ipr_get_mode_page - Locate specified mode page 5460 * @mode_pages: mode page buffer 5461 * @page_code: page code to find 5462 * @len: minimum required length for mode page 5463 * 5464 * Return value: 5465 * pointer to mode page / NULL on failure 5466 **/ 5467static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 5468 u32 page_code, u32 len) 5469{ 5470 struct ipr_mode_page_hdr *mode_hdr; 5471 u32 page_length; 5472 u32 length; 5473 5474 if (!mode_pages || (mode_pages->hdr.length == 0)) 5475 return NULL; 5476 5477 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 5478 mode_hdr = (struct ipr_mode_page_hdr *) 5479 (mode_pages->data + mode_pages->hdr.block_desc_len); 5480 5481 while (length) { 5482 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 5483 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 5484 return mode_hdr; 5485 break; 5486 } else { 5487 page_length = (sizeof(struct ipr_mode_page_hdr) + 5488 mode_hdr->page_length); 5489 length -= page_length; 5490 mode_hdr = (struct ipr_mode_page_hdr *) 5491 ((unsigned long)mode_hdr + page_length); 5492 } 5493 } 5494 return NULL; 5495} 5496 5497/** 5498 * ipr_check_term_power - Check for term power errors 5499 * @ioa_cfg: ioa config struct 5500 * @mode_pages: IOAFP mode pages buffer 5501 * 5502 * Check the IOAFP's mode page 28 for term power errors 5503 * 5504 * Return value: 5505 * nothing 5506 **/ 5507static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 5508 struct ipr_mode_pages *mode_pages) 5509{ 5510 int i; 5511 int entry_length; 5512 struct ipr_dev_bus_entry *bus; 5513 struct ipr_mode_page28 *mode_page; 5514 5515 mode_page = ipr_get_mode_page(mode_pages, 0x28, 5516 sizeof(struct ipr_mode_page28)); 5517 5518 entry_length = mode_page->entry_length; 5519 5520 bus = mode_page->bus; 5521 5522 for (i = 0; i < mode_page->num_entries; i++) { 5523 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 5524 dev_err(&ioa_cfg->pdev->dev, 5525 "Term power is absent on scsi bus %d\n", 5526 bus->res_addr.bus); 5527 } 5528 5529 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 5530 } 5531} 5532 5533/** 5534 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 5535 * @ioa_cfg: ioa config struct 5536 * 5537 * Looks through the config table checking for SES devices. If 5538 * the SES device is in the SES table indicating a maximum SCSI 5539 * bus speed, the speed is limited for the bus. 5540 * 5541 * Return value: 5542 * none 5543 **/ 5544static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 5545{ 5546 u32 max_xfer_rate; 5547 int i; 5548 5549 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 5550 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 5551 ioa_cfg->bus_attr[i].bus_width); 5552 5553 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 5554 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 5555 } 5556} 5557 5558/** 5559 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 5560 * @ioa_cfg: ioa config struct 5561 * @mode_pages: mode page 28 buffer 5562 * 5563 * Updates mode page 28 based on driver configuration 5564 * 5565 * Return value: 5566 * none 5567 **/ 5568static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 5569 struct ipr_mode_pages *mode_pages) 5570{ 5571 int i, entry_length; 5572 struct ipr_dev_bus_entry *bus; 5573 struct ipr_bus_attributes *bus_attr; 5574 struct ipr_mode_page28 *mode_page; 5575 5576 mode_page = ipr_get_mode_page(mode_pages, 0x28, 5577 sizeof(struct ipr_mode_page28)); 5578 5579 entry_length = mode_page->entry_length; 5580 5581 /* Loop for each device bus entry */ 5582 for (i = 0, bus = mode_page->bus; 5583 i < mode_page->num_entries; 5584 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 5585 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 5586 dev_err(&ioa_cfg->pdev->dev, 5587 "Invalid resource address reported: 0x%08X\n", 5588 IPR_GET_PHYS_LOC(bus->res_addr)); 5589 continue; 5590 } 5591 5592 bus_attr = &ioa_cfg->bus_attr[i]; 5593 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 5594 bus->bus_width = bus_attr->bus_width; 5595 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 5596 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 5597 if (bus_attr->qas_enabled) 5598 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 5599 else 5600 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 5601 } 5602} 5603 5604/** 5605 * ipr_build_mode_select - Build a mode select command 5606 * @ipr_cmd: ipr command struct 5607 * @res_handle: resource handle to send command to 5608 * @parm: Byte 2 of Mode Sense command 5609 * @dma_addr: DMA buffer address 5610 * @xfer_len: data transfer length 5611 * 5612 * Return value: 5613 * none 5614 **/ 5615static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 5616 __be32 res_handle, u8 parm, u32 dma_addr, 5617 u8 xfer_len) 5618{ 5619 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5620 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5621 5622 ioarcb->res_handle = res_handle; 5623 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5624 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5625 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 5626 ioarcb->cmd_pkt.cdb[1] = parm; 5627 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5628 5629 ioadl->flags_and_data_len = 5630 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len); 5631 ioadl->address = cpu_to_be32(dma_addr); 5632 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5633 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len); 5634} 5635 5636/** 5637 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 5638 * @ipr_cmd: ipr command struct 5639 * 5640 * This function sets up the SCSI bus attributes and sends 5641 * a Mode Select for Page 28 to activate them. 5642 * 5643 * Return value: 5644 * IPR_RC_JOB_RETURN 5645 **/ 5646static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 5647{ 5648 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5649 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 5650 int length; 5651 5652 ENTER; 5653 ipr_scsi_bus_speed_limit(ioa_cfg); 5654 ipr_check_term_power(ioa_cfg, mode_pages); 5655 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 5656 length = mode_pages->hdr.length + 1; 5657 mode_pages->hdr.length = 0; 5658 5659 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 5660 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 5661 length); 5662 5663 ipr_cmd->job_step = ipr_setup_write_cache; 5664 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5665 5666 LEAVE; 5667 return IPR_RC_JOB_RETURN; 5668} 5669 5670/** 5671 * ipr_build_mode_sense - Builds a mode sense command 5672 * @ipr_cmd: ipr command struct 5673 * @res: resource entry struct 5674 * @parm: Byte 2 of mode sense command 5675 * @dma_addr: DMA address of mode sense buffer 5676 * @xfer_len: Size of DMA buffer 5677 * 5678 * Return value: 5679 * none 5680 **/ 5681static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 5682 __be32 res_handle, 5683 u8 parm, u32 dma_addr, u8 xfer_len) 5684{ 5685 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5686 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5687 5688 ioarcb->res_handle = res_handle; 5689 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 5690 ioarcb->cmd_pkt.cdb[2] = parm; 5691 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5692 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5693 5694 ioadl->flags_and_data_len = 5695 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 5696 ioadl->address = cpu_to_be32(dma_addr); 5697 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5698 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 5699} 5700 5701/** 5702 * ipr_reset_cmd_failed - Handle failure of IOA reset command 5703 * @ipr_cmd: ipr command struct 5704 * 5705 * This function handles the failure of an IOA bringup command. 5706 * 5707 * Return value: 5708 * IPR_RC_JOB_RETURN 5709 **/ 5710static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 5711{ 5712 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5713 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5714 5715 dev_err(&ioa_cfg->pdev->dev, 5716 "0x%02X failed with IOASC: 0x%08X\n", 5717 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 5718 5719 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5720 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5721 return IPR_RC_JOB_RETURN; 5722} 5723 5724/** 5725 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 5726 * @ipr_cmd: ipr command struct 5727 * 5728 * This function handles the failure of a Mode Sense to the IOAFP. 5729 * Some adapters do not handle all mode pages. 5730 * 5731 * Return value: 5732 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5733 **/ 5734static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 5735{ 5736 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5737 5738 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 5739 ipr_cmd->job_step = ipr_setup_write_cache; 5740 return IPR_RC_JOB_CONTINUE; 5741 } 5742 5743 return ipr_reset_cmd_failed(ipr_cmd); 5744} 5745 5746/** 5747 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 5748 * @ipr_cmd: ipr command struct 5749 * 5750 * This function send a Page 28 mode sense to the IOA to 5751 * retrieve SCSI bus attributes. 5752 * 5753 * Return value: 5754 * IPR_RC_JOB_RETURN 5755 **/ 5756static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 5757{ 5758 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5759 5760 ENTER; 5761 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 5762 0x28, ioa_cfg->vpd_cbs_dma + 5763 offsetof(struct ipr_misc_cbs, mode_pages), 5764 sizeof(struct ipr_mode_pages)); 5765 5766 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 5767 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 5768 5769 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5770 5771 LEAVE; 5772 return IPR_RC_JOB_RETURN; 5773} 5774 5775/** 5776 * ipr_init_res_table - Initialize the resource table 5777 * @ipr_cmd: ipr command struct 5778 * 5779 * This function looks through the existing resource table, comparing 5780 * it with the config table. This function will take care of old/new 5781 * devices and schedule adding/removing them from the mid-layer 5782 * as appropriate. 5783 * 5784 * Return value: 5785 * IPR_RC_JOB_CONTINUE 5786 **/ 5787static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 5788{ 5789 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5790 struct ipr_resource_entry *res, *temp; 5791 struct ipr_config_table_entry *cfgte; 5792 int found, i; 5793 LIST_HEAD(old_res); 5794 5795 ENTER; 5796 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ) 5797 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 5798 5799 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 5800 list_move_tail(&res->queue, &old_res); 5801 5802 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) { 5803 cfgte = &ioa_cfg->cfg_table->dev[i]; 5804 found = 0; 5805 5806 list_for_each_entry_safe(res, temp, &old_res, queue) { 5807 if (!memcmp(&res->cfgte.res_addr, 5808 &cfgte->res_addr, sizeof(cfgte->res_addr))) { 5809 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5810 found = 1; 5811 break; 5812 } 5813 } 5814 5815 if (!found) { 5816 if (list_empty(&ioa_cfg->free_res_q)) { 5817 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 5818 break; 5819 } 5820 5821 found = 1; 5822 res = list_entry(ioa_cfg->free_res_q.next, 5823 struct ipr_resource_entry, queue); 5824 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5825 ipr_init_res_entry(res); 5826 res->add_to_ml = 1; 5827 } 5828 5829 if (found) 5830 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 5831 } 5832 5833 list_for_each_entry_safe(res, temp, &old_res, queue) { 5834 if (res->sdev) { 5835 res->del_from_ml = 1; 5836 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE; 5837 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5838 } else { 5839 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 5840 } 5841 } 5842 5843 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 5844 5845 LEAVE; 5846 return IPR_RC_JOB_CONTINUE; 5847} 5848 5849/** 5850 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 5851 * @ipr_cmd: ipr command struct 5852 * 5853 * This function sends a Query IOA Configuration command 5854 * to the adapter to retrieve the IOA configuration table. 5855 * 5856 * Return value: 5857 * IPR_RC_JOB_RETURN 5858 **/ 5859static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 5860{ 5861 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5862 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5863 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5864 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 5865 5866 ENTER; 5867 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 5868 ucode_vpd->major_release, ucode_vpd->card_type, 5869 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 5870 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5871 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5872 5873 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 5874 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff; 5875 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff; 5876 5877 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5878 ioarcb->read_data_transfer_length = 5879 cpu_to_be32(sizeof(struct ipr_config_table)); 5880 5881 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma); 5882 ioadl->flags_and_data_len = 5883 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table)); 5884 5885 ipr_cmd->job_step = ipr_init_res_table; 5886 5887 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5888 5889 LEAVE; 5890 return IPR_RC_JOB_RETURN; 5891} 5892 5893/** 5894 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 5895 * @ipr_cmd: ipr command struct 5896 * 5897 * This utility function sends an inquiry to the adapter. 5898 * 5899 * Return value: 5900 * none 5901 **/ 5902static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 5903 u32 dma_addr, u8 xfer_len) 5904{ 5905 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5906 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5907 5908 ENTER; 5909 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5910 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5911 5912 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 5913 ioarcb->cmd_pkt.cdb[1] = flags; 5914 ioarcb->cmd_pkt.cdb[2] = page; 5915 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5916 5917 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5918 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 5919 5920 ioadl->address = cpu_to_be32(dma_addr); 5921 ioadl->flags_and_data_len = 5922 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 5923 5924 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5925 LEAVE; 5926} 5927 5928/** 5929 * ipr_inquiry_page_supported - Is the given inquiry page supported 5930 * @page0: inquiry page 0 buffer 5931 * @page: page code. 5932 * 5933 * This function determines if the specified inquiry page is supported. 5934 * 5935 * Return value: 5936 * 1 if page is supported / 0 if not 5937 **/ 5938static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 5939{ 5940 int i; 5941 5942 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 5943 if (page0->page[i] == page) 5944 return 1; 5945 5946 return 0; 5947} 5948 5949/** 5950 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 5951 * @ipr_cmd: ipr command struct 5952 * 5953 * This function sends a Page 3 inquiry to the adapter 5954 * to retrieve software VPD information. 5955 * 5956 * Return value: 5957 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5958 **/ 5959static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 5960{ 5961 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5962 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 5963 5964 ENTER; 5965 5966 if (!ipr_inquiry_page_supported(page0, 1)) 5967 ioa_cfg->cache_state = CACHE_NONE; 5968 5969 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 5970 5971 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 5972 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 5973 sizeof(struct ipr_inquiry_page3)); 5974 5975 LEAVE; 5976 return IPR_RC_JOB_RETURN; 5977} 5978 5979/** 5980 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 5981 * @ipr_cmd: ipr command struct 5982 * 5983 * This function sends a Page 0 inquiry to the adapter 5984 * to retrieve supported inquiry pages. 5985 * 5986 * Return value: 5987 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5988 **/ 5989static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 5990{ 5991 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5992 char type[5]; 5993 5994 ENTER; 5995 5996 /* Grab the type out of the VPD and store it away */ 5997 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 5998 type[4] = '\0'; 5999 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 6000 6001 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 6002 6003 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 6004 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 6005 sizeof(struct ipr_inquiry_page0)); 6006 6007 LEAVE; 6008 return IPR_RC_JOB_RETURN; 6009} 6010 6011/** 6012 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 6013 * @ipr_cmd: ipr command struct 6014 * 6015 * This function sends a standard inquiry to the adapter. 6016 * 6017 * Return value: 6018 * IPR_RC_JOB_RETURN 6019 **/ 6020static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 6021{ 6022 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6023 6024 ENTER; 6025 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 6026 6027 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 6028 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 6029 sizeof(struct ipr_ioa_vpd)); 6030 6031 LEAVE; 6032 return IPR_RC_JOB_RETURN; 6033} 6034 6035/** 6036 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ. 6037 * @ipr_cmd: ipr command struct 6038 * 6039 * This function send an Identify Host Request Response Queue 6040 * command to establish the HRRQ with the adapter. 6041 * 6042 * Return value: 6043 * IPR_RC_JOB_RETURN 6044 **/ 6045static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd) 6046{ 6047 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6048 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6049 6050 ENTER; 6051 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 6052 6053 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 6054 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6055 6056 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6057 ioarcb->cmd_pkt.cdb[2] = 6058 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff; 6059 ioarcb->cmd_pkt.cdb[3] = 6060 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff; 6061 ioarcb->cmd_pkt.cdb[4] = 6062 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff; 6063 ioarcb->cmd_pkt.cdb[5] = 6064 ((u32) ioa_cfg->host_rrq_dma) & 0xff; 6065 ioarcb->cmd_pkt.cdb[7] = 6066 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; 6067 ioarcb->cmd_pkt.cdb[8] = 6068 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; 6069 6070 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 6071 6072 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6073 6074 LEAVE; 6075 return IPR_RC_JOB_RETURN; 6076} 6077 6078/** 6079 * ipr_reset_timer_done - Adapter reset timer function 6080 * @ipr_cmd: ipr command struct 6081 * 6082 * Description: This function is used in adapter reset processing 6083 * for timing events. If the reset_cmd pointer in the IOA 6084 * config struct is not this adapter's we are doing nested 6085 * resets and fail_all_ops will take care of freeing the 6086 * command block. 6087 * 6088 * Return value: 6089 * none 6090 **/ 6091static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 6092{ 6093 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6094 unsigned long lock_flags = 0; 6095 6096 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6097 6098 if (ioa_cfg->reset_cmd == ipr_cmd) { 6099 list_del(&ipr_cmd->queue); 6100 ipr_cmd->done(ipr_cmd); 6101 } 6102 6103 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6104} 6105 6106/** 6107 * ipr_reset_start_timer - Start a timer for adapter reset job 6108 * @ipr_cmd: ipr command struct 6109 * @timeout: timeout value 6110 * 6111 * Description: This function is used in adapter reset processing 6112 * for timing events. If the reset_cmd pointer in the IOA 6113 * config struct is not this adapter's we are doing nested 6114 * resets and fail_all_ops will take care of freeing the 6115 * command block. 6116 * 6117 * Return value: 6118 * none 6119 **/ 6120static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 6121 unsigned long timeout) 6122{ 6123 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 6124 ipr_cmd->done = ipr_reset_ioa_job; 6125 6126 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 6127 ipr_cmd->timer.expires = jiffies + timeout; 6128 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 6129 add_timer(&ipr_cmd->timer); 6130} 6131 6132/** 6133 * ipr_init_ioa_mem - Initialize ioa_cfg control block 6134 * @ioa_cfg: ioa cfg struct 6135 * 6136 * Return value: 6137 * nothing 6138 **/ 6139static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 6140{ 6141 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); 6142 6143 /* Initialize Host RRQ pointers */ 6144 ioa_cfg->hrrq_start = ioa_cfg->host_rrq; 6145 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; 6146 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 6147 ioa_cfg->toggle_bit = 1; 6148 6149 /* Zero out config table */ 6150 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table)); 6151} 6152 6153/** 6154 * ipr_reset_enable_ioa - Enable the IOA following a reset. 6155 * @ipr_cmd: ipr command struct 6156 * 6157 * This function reinitializes some control blocks and 6158 * enables destructive diagnostics on the adapter. 6159 * 6160 * Return value: 6161 * IPR_RC_JOB_RETURN 6162 **/ 6163static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 6164{ 6165 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6166 volatile u32 int_reg; 6167 6168 ENTER; 6169 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq; 6170 ipr_init_ioa_mem(ioa_cfg); 6171 6172 ioa_cfg->allow_interrupts = 1; 6173 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 6174 6175 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 6176 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 6177 ioa_cfg->regs.clr_interrupt_mask_reg); 6178 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 6179 return IPR_RC_JOB_CONTINUE; 6180 } 6181 6182 /* Enable destructive diagnostics on IOA */ 6183 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg); 6184 6185 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg); 6186 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 6187 6188 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 6189 6190 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 6191 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ); 6192 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 6193 ipr_cmd->done = ipr_reset_ioa_job; 6194 add_timer(&ipr_cmd->timer); 6195 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 6196 6197 LEAVE; 6198 return IPR_RC_JOB_RETURN; 6199} 6200 6201/** 6202 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 6203 * @ipr_cmd: ipr command struct 6204 * 6205 * This function is invoked when an adapter dump has run out 6206 * of processing time. 6207 * 6208 * Return value: 6209 * IPR_RC_JOB_CONTINUE 6210 **/ 6211static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 6212{ 6213 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6214 6215 if (ioa_cfg->sdt_state == GET_DUMP) 6216 ioa_cfg->sdt_state = ABORT_DUMP; 6217 6218 ipr_cmd->job_step = ipr_reset_alert; 6219 6220 return IPR_RC_JOB_CONTINUE; 6221} 6222 6223/** 6224 * ipr_unit_check_no_data - Log a unit check/no data error log 6225 * @ioa_cfg: ioa config struct 6226 * 6227 * Logs an error indicating the adapter unit checked, but for some 6228 * reason, we were unable to fetch the unit check buffer. 6229 * 6230 * Return value: 6231 * nothing 6232 **/ 6233static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 6234{ 6235 ioa_cfg->errors_logged++; 6236 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 6237} 6238 6239/** 6240 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 6241 * @ioa_cfg: ioa config struct 6242 * 6243 * Fetches the unit check buffer from the adapter by clocking the data 6244 * through the mailbox register. 6245 * 6246 * Return value: 6247 * nothing 6248 **/ 6249static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 6250{ 6251 unsigned long mailbox; 6252 struct ipr_hostrcb *hostrcb; 6253 struct ipr_uc_sdt sdt; 6254 int rc, length; 6255 6256 mailbox = readl(ioa_cfg->ioa_mailbox); 6257 6258 if (!ipr_sdt_is_fmt2(mailbox)) { 6259 ipr_unit_check_no_data(ioa_cfg); 6260 return; 6261 } 6262 6263 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 6264 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 6265 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 6266 6267 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) || 6268 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) { 6269 ipr_unit_check_no_data(ioa_cfg); 6270 return; 6271 } 6272 6273 /* Find length of the first sdt entry (UC buffer) */ 6274 length = (be32_to_cpu(sdt.entry[0].end_offset) - 6275 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK; 6276 6277 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 6278 struct ipr_hostrcb, queue); 6279 list_del(&hostrcb->queue); 6280 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 6281 6282 rc = ipr_get_ldump_data_section(ioa_cfg, 6283 be32_to_cpu(sdt.entry[0].bar_str_offset), 6284 (__be32 *)&hostrcb->hcam, 6285 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 6286 6287 if (!rc) 6288 ipr_handle_log_data(ioa_cfg, hostrcb); 6289 else 6290 ipr_unit_check_no_data(ioa_cfg); 6291 6292 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 6293} 6294 6295/** 6296 * ipr_reset_restore_cfg_space - Restore PCI config space. 6297 * @ipr_cmd: ipr command struct 6298 * 6299 * Description: This function restores the saved PCI config space of 6300 * the adapter, fails all outstanding ops back to the callers, and 6301 * fetches the dump/unit check if applicable to this reset. 6302 * 6303 * Return value: 6304 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6305 **/ 6306static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 6307{ 6308 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6309 int rc; 6310 6311 ENTER; 6312 rc = pci_restore_state(ioa_cfg->pdev); 6313 6314 if (rc != PCIBIOS_SUCCESSFUL) { 6315 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6316 return IPR_RC_JOB_CONTINUE; 6317 } 6318 6319 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 6320 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6321 return IPR_RC_JOB_CONTINUE; 6322 } 6323 6324 ipr_fail_all_ops(ioa_cfg); 6325 6326 if (ioa_cfg->ioa_unit_checked) { 6327 ioa_cfg->ioa_unit_checked = 0; 6328 ipr_get_unit_check_buffer(ioa_cfg); 6329 ipr_cmd->job_step = ipr_reset_alert; 6330 ipr_reset_start_timer(ipr_cmd, 0); 6331 return IPR_RC_JOB_RETURN; 6332 } 6333 6334 if (ioa_cfg->in_ioa_bringdown) { 6335 ipr_cmd->job_step = ipr_ioa_bringdown_done; 6336 } else { 6337 ipr_cmd->job_step = ipr_reset_enable_ioa; 6338 6339 if (GET_DUMP == ioa_cfg->sdt_state) { 6340 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); 6341 ipr_cmd->job_step = ipr_reset_wait_for_dump; 6342 schedule_work(&ioa_cfg->work_q); 6343 return IPR_RC_JOB_RETURN; 6344 } 6345 } 6346 6347 ENTER; 6348 return IPR_RC_JOB_CONTINUE; 6349} 6350 6351/** 6352 * ipr_reset_bist_done - BIST has completed on the adapter. 6353 * @ipr_cmd: ipr command struct 6354 * 6355 * Description: Unblock config space and resume the reset process. 6356 * 6357 * Return value: 6358 * IPR_RC_JOB_CONTINUE 6359 **/ 6360static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd) 6361{ 6362 ENTER; 6363 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 6364 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 6365 LEAVE; 6366 return IPR_RC_JOB_CONTINUE; 6367} 6368 6369/** 6370 * ipr_reset_start_bist - Run BIST on the adapter. 6371 * @ipr_cmd: ipr command struct 6372 * 6373 * Description: This function runs BIST on the adapter, then delays 2 seconds. 6374 * 6375 * Return value: 6376 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6377 **/ 6378static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 6379{ 6380 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6381 int rc; 6382 6383 ENTER; 6384 pci_block_user_cfg_access(ioa_cfg->pdev); 6385 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 6386 6387 if (rc != PCIBIOS_SUCCESSFUL) { 6388 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6389 rc = IPR_RC_JOB_CONTINUE; 6390 } else { 6391 ipr_cmd->job_step = ipr_reset_bist_done; 6392 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 6393 rc = IPR_RC_JOB_RETURN; 6394 } 6395 6396 LEAVE; 6397 return rc; 6398} 6399 6400/** 6401 * ipr_reset_allowed - Query whether or not IOA can be reset 6402 * @ioa_cfg: ioa config struct 6403 * 6404 * Return value: 6405 * 0 if reset not allowed / non-zero if reset is allowed 6406 **/ 6407static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 6408{ 6409 volatile u32 temp_reg; 6410 6411 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 6412 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 6413} 6414 6415/** 6416 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 6417 * @ipr_cmd: ipr command struct 6418 * 6419 * Description: This function waits for adapter permission to run BIST, 6420 * then runs BIST. If the adapter does not give permission after a 6421 * reasonable time, we will reset the adapter anyway. The impact of 6422 * resetting the adapter without warning the adapter is the risk of 6423 * losing the persistent error log on the adapter. If the adapter is 6424 * reset while it is writing to the flash on the adapter, the flash 6425 * segment will have bad ECC and be zeroed. 6426 * 6427 * Return value: 6428 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6429 **/ 6430static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 6431{ 6432 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6433 int rc = IPR_RC_JOB_RETURN; 6434 6435 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 6436 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 6437 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 6438 } else { 6439 ipr_cmd->job_step = ipr_reset_start_bist; 6440 rc = IPR_RC_JOB_CONTINUE; 6441 } 6442 6443 return rc; 6444} 6445 6446/** 6447 * ipr_reset_alert_part2 - Alert the adapter of a pending reset 6448 * @ipr_cmd: ipr command struct 6449 * 6450 * Description: This function alerts the adapter that it will be reset. 6451 * If memory space is not currently enabled, proceed directly 6452 * to running BIST on the adapter. The timer must always be started 6453 * so we guarantee we do not run BIST from ipr_isr. 6454 * 6455 * Return value: 6456 * IPR_RC_JOB_RETURN 6457 **/ 6458static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 6459{ 6460 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6461 u16 cmd_reg; 6462 int rc; 6463 6464 ENTER; 6465 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 6466 6467 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 6468 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 6469 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg); 6470 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 6471 } else { 6472 ipr_cmd->job_step = ipr_reset_start_bist; 6473 } 6474 6475 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 6476 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 6477 6478 LEAVE; 6479 return IPR_RC_JOB_RETURN; 6480} 6481 6482/** 6483 * ipr_reset_ucode_download_done - Microcode download completion 6484 * @ipr_cmd: ipr command struct 6485 * 6486 * Description: This function unmaps the microcode download buffer. 6487 * 6488 * Return value: 6489 * IPR_RC_JOB_CONTINUE 6490 **/ 6491static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 6492{ 6493 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6494 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 6495 6496 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, 6497 sglist->num_sg, DMA_TO_DEVICE); 6498 6499 ipr_cmd->job_step = ipr_reset_alert; 6500 return IPR_RC_JOB_CONTINUE; 6501} 6502 6503/** 6504 * ipr_reset_ucode_download - Download microcode to the adapter 6505 * @ipr_cmd: ipr command struct 6506 * 6507 * Description: This function checks to see if it there is microcode 6508 * to download to the adapter. If there is, a download is performed. 6509 * 6510 * Return value: 6511 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6512 **/ 6513static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 6514{ 6515 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6516 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 6517 6518 ENTER; 6519 ipr_cmd->job_step = ipr_reset_alert; 6520 6521 if (!sglist) 6522 return IPR_RC_JOB_CONTINUE; 6523 6524 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6525 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6526 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 6527 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 6528 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 6529 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 6530 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 6531 6532 ipr_build_ucode_ioadl(ipr_cmd, sglist); 6533 ipr_cmd->job_step = ipr_reset_ucode_download_done; 6534 6535 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 6536 IPR_WRITE_BUFFER_TIMEOUT); 6537 6538 LEAVE; 6539 return IPR_RC_JOB_RETURN; 6540} 6541 6542/** 6543 * ipr_reset_shutdown_ioa - Shutdown the adapter 6544 * @ipr_cmd: ipr command struct 6545 * 6546 * Description: This function issues an adapter shutdown of the 6547 * specified type to the specified adapter as part of the 6548 * adapter reset job. 6549 * 6550 * Return value: 6551 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6552 **/ 6553static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 6554{ 6555 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6556 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 6557 unsigned long timeout; 6558 int rc = IPR_RC_JOB_CONTINUE; 6559 6560 ENTER; 6561 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { 6562 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6563 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6564 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 6565 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 6566 6567 if (shutdown_type == IPR_SHUTDOWN_ABBREV) 6568 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 6569 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 6570 timeout = IPR_INTERNAL_TIMEOUT; 6571 else 6572 timeout = IPR_SHUTDOWN_TIMEOUT; 6573 6574 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 6575 6576 rc = IPR_RC_JOB_RETURN; 6577 ipr_cmd->job_step = ipr_reset_ucode_download; 6578 } else 6579 ipr_cmd->job_step = ipr_reset_alert; 6580 6581 LEAVE; 6582 return rc; 6583} 6584 6585/** 6586 * ipr_reset_ioa_job - Adapter reset job 6587 * @ipr_cmd: ipr command struct 6588 * 6589 * Description: This function is the job router for the adapter reset job. 6590 * 6591 * Return value: 6592 * none 6593 **/ 6594static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 6595{ 6596 u32 rc, ioasc; 6597 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6598 6599 do { 6600 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 6601 6602 if (ioa_cfg->reset_cmd != ipr_cmd) { 6603 /* 6604 * We are doing nested adapter resets and this is 6605 * not the current reset job. 6606 */ 6607 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6608 return; 6609 } 6610 6611 if (IPR_IOASC_SENSE_KEY(ioasc)) { 6612 rc = ipr_cmd->job_step_failed(ipr_cmd); 6613 if (rc == IPR_RC_JOB_RETURN) 6614 return; 6615 } 6616 6617 ipr_reinit_ipr_cmnd(ipr_cmd); 6618 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 6619 rc = ipr_cmd->job_step(ipr_cmd); 6620 } while(rc == IPR_RC_JOB_CONTINUE); 6621} 6622 6623/** 6624 * _ipr_initiate_ioa_reset - Initiate an adapter reset 6625 * @ioa_cfg: ioa config struct 6626 * @job_step: first job step of reset job 6627 * @shutdown_type: shutdown type 6628 * 6629 * Description: This function will initiate the reset of the given adapter 6630 * starting at the selected job step. 6631 * If the caller needs to wait on the completion of the reset, 6632 * the caller must sleep on the reset_wait_q. 6633 * 6634 * Return value: 6635 * none 6636 **/ 6637static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 6638 int (*job_step) (struct ipr_cmnd *), 6639 enum ipr_shutdown_type shutdown_type) 6640{ 6641 struct ipr_cmnd *ipr_cmd; 6642 6643 ioa_cfg->in_reset_reload = 1; 6644 ioa_cfg->allow_cmds = 0; 6645 scsi_block_requests(ioa_cfg->host); 6646 6647 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 6648 ioa_cfg->reset_cmd = ipr_cmd; 6649 ipr_cmd->job_step = job_step; 6650 ipr_cmd->u.shutdown_type = shutdown_type; 6651 6652 ipr_reset_ioa_job(ipr_cmd); 6653} 6654 6655/** 6656 * ipr_initiate_ioa_reset - Initiate an adapter reset 6657 * @ioa_cfg: ioa config struct 6658 * @shutdown_type: shutdown type 6659 * 6660 * Description: This function will initiate the reset of the given adapter. 6661 * If the caller needs to wait on the completion of the reset, 6662 * the caller must sleep on the reset_wait_q. 6663 * 6664 * Return value: 6665 * none 6666 **/ 6667static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 6668 enum ipr_shutdown_type shutdown_type) 6669{ 6670 if (ioa_cfg->ioa_is_dead) 6671 return; 6672 6673 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) 6674 ioa_cfg->sdt_state = ABORT_DUMP; 6675 6676 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 6677 dev_err(&ioa_cfg->pdev->dev, 6678 "IOA taken offline - error recovery failed\n"); 6679 6680 ioa_cfg->reset_retries = 0; 6681 ioa_cfg->ioa_is_dead = 1; 6682 6683 if (ioa_cfg->in_ioa_bringdown) { 6684 ioa_cfg->reset_cmd = NULL; 6685 ioa_cfg->in_reset_reload = 0; 6686 ipr_fail_all_ops(ioa_cfg); 6687 wake_up_all(&ioa_cfg->reset_wait_q); 6688 6689 spin_unlock_irq(ioa_cfg->host->host_lock); 6690 scsi_unblock_requests(ioa_cfg->host); 6691 spin_lock_irq(ioa_cfg->host->host_lock); 6692 return; 6693 } else { 6694 ioa_cfg->in_ioa_bringdown = 1; 6695 shutdown_type = IPR_SHUTDOWN_NONE; 6696 } 6697 } 6698 6699 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 6700 shutdown_type); 6701} 6702 6703/** 6704 * ipr_reset_freeze - Hold off all I/O activity 6705 * @ipr_cmd: ipr command struct 6706 * 6707 * Description: If the PCI slot is frozen, hold off all I/O 6708 * activity; then, as soon as the slot is available again, 6709 * initiate an adapter reset. 6710 */ 6711static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 6712{ 6713 /* Disallow new interrupts, avoid loop */ 6714 ipr_cmd->ioa_cfg->allow_interrupts = 0; 6715 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 6716 ipr_cmd->done = ipr_reset_ioa_job; 6717 return IPR_RC_JOB_RETURN; 6718} 6719 6720/** 6721 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 6722 * @pdev: PCI device struct 6723 * 6724 * Description: This routine is called to tell us that the PCI bus 6725 * is down. Can't do anything here, except put the device driver 6726 * into a holding pattern, waiting for the PCI bus to come back. 6727 */ 6728static void ipr_pci_frozen(struct pci_dev *pdev) 6729{ 6730 unsigned long flags = 0; 6731 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6732 6733 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6734 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 6735 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6736} 6737 6738/** 6739 * ipr_pci_slot_reset - Called when PCI slot has been reset. 6740 * @pdev: PCI device struct 6741 * 6742 * Description: This routine is called by the pci error recovery 6743 * code after the PCI slot has been reset, just before we 6744 * should resume normal operations. 6745 */ 6746static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 6747{ 6748 unsigned long flags = 0; 6749 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6750 6751 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6752 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 6753 IPR_SHUTDOWN_NONE); 6754 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6755 return PCI_ERS_RESULT_RECOVERED; 6756} 6757 6758/** 6759 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 6760 * @pdev: PCI device struct 6761 * 6762 * Description: This routine is called when the PCI bus has 6763 * permanently failed. 6764 */ 6765static void ipr_pci_perm_failure(struct pci_dev *pdev) 6766{ 6767 unsigned long flags = 0; 6768 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6769 6770 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6771 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 6772 ioa_cfg->sdt_state = ABORT_DUMP; 6773 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES; 6774 ioa_cfg->in_ioa_bringdown = 1; 6775 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6776 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6777} 6778 6779/** 6780 * ipr_pci_error_detected - Called when a PCI error is detected. 6781 * @pdev: PCI device struct 6782 * @state: PCI channel state 6783 * 6784 * Description: Called when a PCI error is detected. 6785 * 6786 * Return value: 6787 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 6788 */ 6789static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 6790 pci_channel_state_t state) 6791{ 6792 switch (state) { 6793 case pci_channel_io_frozen: 6794 ipr_pci_frozen(pdev); 6795 return PCI_ERS_RESULT_NEED_RESET; 6796 case pci_channel_io_perm_failure: 6797 ipr_pci_perm_failure(pdev); 6798 return PCI_ERS_RESULT_DISCONNECT; 6799 break; 6800 default: 6801 break; 6802 } 6803 return PCI_ERS_RESULT_NEED_RESET; 6804} 6805 6806/** 6807 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 6808 * @ioa_cfg: ioa cfg struct 6809 * 6810 * Description: This is the second phase of adapter intialization 6811 * This function takes care of initilizing the adapter to the point 6812 * where it can accept new commands. 6813 6814 * Return value: 6815 * 0 on sucess / -EIO on failure 6816 **/ 6817static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 6818{ 6819 int rc = 0; 6820 unsigned long host_lock_flags = 0; 6821 6822 ENTER; 6823 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 6824 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 6825 if (ioa_cfg->needs_hard_reset) { 6826 ioa_cfg->needs_hard_reset = 0; 6827 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6828 } else 6829 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 6830 IPR_SHUTDOWN_NONE); 6831 6832 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 6833 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6834 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 6835 6836 if (ioa_cfg->ioa_is_dead) { 6837 rc = -EIO; 6838 } else if (ipr_invalid_adapter(ioa_cfg)) { 6839 if (!ipr_testmode) 6840 rc = -EIO; 6841 6842 dev_err(&ioa_cfg->pdev->dev, 6843 "Adapter not supported in this hardware configuration.\n"); 6844 } 6845 6846 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 6847 6848 LEAVE; 6849 return rc; 6850} 6851 6852/** 6853 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 6854 * @ioa_cfg: ioa config struct 6855 * 6856 * Return value: 6857 * none 6858 **/ 6859static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 6860{ 6861 int i; 6862 6863 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 6864 if (ioa_cfg->ipr_cmnd_list[i]) 6865 pci_pool_free(ioa_cfg->ipr_cmd_pool, 6866 ioa_cfg->ipr_cmnd_list[i], 6867 ioa_cfg->ipr_cmnd_list_dma[i]); 6868 6869 ioa_cfg->ipr_cmnd_list[i] = NULL; 6870 } 6871 6872 if (ioa_cfg->ipr_cmd_pool) 6873 pci_pool_destroy (ioa_cfg->ipr_cmd_pool); 6874 6875 ioa_cfg->ipr_cmd_pool = NULL; 6876} 6877 6878/** 6879 * ipr_free_mem - Frees memory allocated for an adapter 6880 * @ioa_cfg: ioa cfg struct 6881 * 6882 * Return value: 6883 * nothing 6884 **/ 6885static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 6886{ 6887 int i; 6888 6889 kfree(ioa_cfg->res_entries); 6890 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), 6891 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 6892 ipr_free_cmd_blks(ioa_cfg); 6893 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 6894 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 6895 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table), 6896 ioa_cfg->cfg_table, 6897 ioa_cfg->cfg_table_dma); 6898 6899 for (i = 0; i < IPR_NUM_HCAMS; i++) { 6900 pci_free_consistent(ioa_cfg->pdev, 6901 sizeof(struct ipr_hostrcb), 6902 ioa_cfg->hostrcb[i], 6903 ioa_cfg->hostrcb_dma[i]); 6904 } 6905 6906 ipr_free_dump(ioa_cfg); 6907 kfree(ioa_cfg->trace); 6908} 6909 6910/** 6911 * ipr_free_all_resources - Free all allocated resources for an adapter. 6912 * @ipr_cmd: ipr command struct 6913 * 6914 * This function frees all allocated resources for the 6915 * specified adapter. 6916 * 6917 * Return value: 6918 * none 6919 **/ 6920static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 6921{ 6922 struct pci_dev *pdev = ioa_cfg->pdev; 6923 6924 ENTER; 6925 free_irq(pdev->irq, ioa_cfg); 6926 iounmap(ioa_cfg->hdw_dma_regs); 6927 pci_release_regions(pdev); 6928 ipr_free_mem(ioa_cfg); 6929 scsi_host_put(ioa_cfg->host); 6930 pci_disable_device(pdev); 6931 LEAVE; 6932} 6933 6934/** 6935 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 6936 * @ioa_cfg: ioa config struct 6937 * 6938 * Return value: 6939 * 0 on success / -ENOMEM on allocation failure 6940 **/ 6941static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 6942{ 6943 struct ipr_cmnd *ipr_cmd; 6944 struct ipr_ioarcb *ioarcb; 6945 dma_addr_t dma_addr; 6946 int i; 6947 6948 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, 6949 sizeof(struct ipr_cmnd), 8, 0); 6950 6951 if (!ioa_cfg->ipr_cmd_pool) 6952 return -ENOMEM; 6953 6954 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 6955 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr); 6956 6957 if (!ipr_cmd) { 6958 ipr_free_cmd_blks(ioa_cfg); 6959 return -ENOMEM; 6960 } 6961 6962 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 6963 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 6964 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 6965 6966 ioarcb = &ipr_cmd->ioarcb; 6967 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 6968 ioarcb->host_response_handle = cpu_to_be32(i << 2); 6969 ioarcb->write_ioadl_addr = 6970 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); 6971 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 6972 ioarcb->ioasa_host_pci_addr = 6973 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa)); 6974 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 6975 ipr_cmd->cmd_index = i; 6976 ipr_cmd->ioa_cfg = ioa_cfg; 6977 ipr_cmd->sense_buffer_dma = dma_addr + 6978 offsetof(struct ipr_cmnd, sense_buffer); 6979 6980 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6981 } 6982 6983 return 0; 6984} 6985 6986/** 6987 * ipr_alloc_mem - Allocate memory for an adapter 6988 * @ioa_cfg: ioa config struct 6989 * 6990 * Return value: 6991 * 0 on success / non-zero for error 6992 **/ 6993static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 6994{ 6995 struct pci_dev *pdev = ioa_cfg->pdev; 6996 int i, rc = -ENOMEM; 6997 6998 ENTER; 6999 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * 7000 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL); 7001 7002 if (!ioa_cfg->res_entries) 7003 goto out; 7004 7005 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++) 7006 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 7007 7008 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, 7009 sizeof(struct ipr_misc_cbs), 7010 &ioa_cfg->vpd_cbs_dma); 7011 7012 if (!ioa_cfg->vpd_cbs) 7013 goto out_free_res_entries; 7014 7015 if (ipr_alloc_cmd_blks(ioa_cfg)) 7016 goto out_free_vpd_cbs; 7017 7018 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, 7019 sizeof(u32) * IPR_NUM_CMD_BLKS, 7020 &ioa_cfg->host_rrq_dma); 7021 7022 if (!ioa_cfg->host_rrq) 7023 goto out_ipr_free_cmd_blocks; 7024 7025 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev, 7026 sizeof(struct ipr_config_table), 7027 &ioa_cfg->cfg_table_dma); 7028 7029 if (!ioa_cfg->cfg_table) 7030 goto out_free_host_rrq; 7031 7032 for (i = 0; i < IPR_NUM_HCAMS; i++) { 7033 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, 7034 sizeof(struct ipr_hostrcb), 7035 &ioa_cfg->hostrcb_dma[i]); 7036 7037 if (!ioa_cfg->hostrcb[i]) 7038 goto out_free_hostrcb_dma; 7039 7040 ioa_cfg->hostrcb[i]->hostrcb_dma = 7041 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 7042 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg; 7043 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 7044 } 7045 7046 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * 7047 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 7048 7049 if (!ioa_cfg->trace) 7050 goto out_free_hostrcb_dma; 7051 7052 rc = 0; 7053out: 7054 LEAVE; 7055 return rc; 7056 7057out_free_hostrcb_dma: 7058 while (i-- > 0) { 7059 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), 7060 ioa_cfg->hostrcb[i], 7061 ioa_cfg->hostrcb_dma[i]); 7062 } 7063 pci_free_consistent(pdev, sizeof(struct ipr_config_table), 7064 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma); 7065out_free_host_rrq: 7066 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 7067 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 7068out_ipr_free_cmd_blocks: 7069 ipr_free_cmd_blks(ioa_cfg); 7070out_free_vpd_cbs: 7071 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), 7072 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 7073out_free_res_entries: 7074 kfree(ioa_cfg->res_entries); 7075 goto out; 7076} 7077 7078/** 7079 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 7080 * @ioa_cfg: ioa config struct 7081 * 7082 * Return value: 7083 * none 7084 **/ 7085static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 7086{ 7087 int i; 7088 7089 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 7090 ioa_cfg->bus_attr[i].bus = i; 7091 ioa_cfg->bus_attr[i].qas_enabled = 0; 7092 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 7093 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 7094 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 7095 else 7096 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 7097 } 7098} 7099 7100/** 7101 * ipr_init_ioa_cfg - Initialize IOA config struct 7102 * @ioa_cfg: ioa config struct 7103 * @host: scsi host struct 7104 * @pdev: PCI dev struct 7105 * 7106 * Return value: 7107 * none 7108 **/ 7109static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 7110 struct Scsi_Host *host, struct pci_dev *pdev) 7111{ 7112 const struct ipr_interrupt_offsets *p; 7113 struct ipr_interrupts *t; 7114 void __iomem *base; 7115 7116 ioa_cfg->host = host; 7117 ioa_cfg->pdev = pdev; 7118 ioa_cfg->log_level = ipr_log_level; 7119 ioa_cfg->doorbell = IPR_DOORBELL; 7120 if (!ipr_auto_create) 7121 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 7122 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 7123 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 7124 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); 7125 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); 7126 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 7127 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 7128 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 7129 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 7130 7131 INIT_LIST_HEAD(&ioa_cfg->free_q); 7132 INIT_LIST_HEAD(&ioa_cfg->pending_q); 7133 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 7134 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 7135 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 7136 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 7137 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread); 7138 init_waitqueue_head(&ioa_cfg->reset_wait_q); 7139 ioa_cfg->sdt_state = INACTIVE; 7140 if (ipr_enable_cache) 7141 ioa_cfg->cache_state = CACHE_ENABLED; 7142 else 7143 ioa_cfg->cache_state = CACHE_DISABLED; 7144 7145 ipr_initialize_bus_attr(ioa_cfg); 7146 7147 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 7148 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 7149 host->max_channel = IPR_MAX_BUS_TO_SCAN; 7150 host->unique_id = host->host_no; 7151 host->max_cmd_len = IPR_MAX_CDB_LEN; 7152 pci_set_drvdata(pdev, ioa_cfg); 7153 7154 p = &ioa_cfg->chip_cfg->regs; 7155 t = &ioa_cfg->regs; 7156 base = ioa_cfg->hdw_dma_regs; 7157 7158 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 7159 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 7160 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 7161 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 7162 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 7163 t->ioarrin_reg = base + p->ioarrin_reg; 7164 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 7165 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 7166 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 7167} 7168 7169/** 7170 * ipr_get_chip_cfg - Find adapter chip configuration 7171 * @dev_id: PCI device id struct 7172 * 7173 * Return value: 7174 * ptr to chip config on success / NULL on failure 7175 **/ 7176static const struct ipr_chip_cfg_t * __devinit 7177ipr_get_chip_cfg(const struct pci_device_id *dev_id) 7178{ 7179 int i; 7180 7181 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 7182 if (ipr_chip[i].vendor == dev_id->vendor && 7183 ipr_chip[i].device == dev_id->device) 7184 return ipr_chip[i].cfg; 7185 return NULL; 7186} 7187 7188/** 7189 * ipr_probe_ioa - Allocates memory and does first stage of initialization 7190 * @pdev: PCI device struct 7191 * @dev_id: PCI device id struct 7192 * 7193 * Return value: 7194 * 0 on success / non-zero on failure 7195 **/ 7196static int __devinit ipr_probe_ioa(struct pci_dev *pdev, 7197 const struct pci_device_id *dev_id) 7198{ 7199 struct ipr_ioa_cfg *ioa_cfg; 7200 struct Scsi_Host *host; 7201 unsigned long ipr_regs_pci; 7202 void __iomem *ipr_regs; 7203 int rc = PCIBIOS_SUCCESSFUL; 7204 volatile u32 mask, uproc; 7205 7206 ENTER; 7207 7208 if ((rc = pci_enable_device(pdev))) { 7209 dev_err(&pdev->dev, "Cannot enable adapter\n"); 7210 goto out; 7211 } 7212 7213 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 7214 7215 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 7216 7217 if (!host) { 7218 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 7219 rc = -ENOMEM; 7220 goto out_disable; 7221 } 7222 7223 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 7224 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 7225 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, 7226 sata_port_info.flags, &ipr_sata_ops); 7227 7228 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id); 7229 7230 if (!ioa_cfg->chip_cfg) { 7231 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 7232 dev_id->vendor, dev_id->device); 7233 goto out_scsi_host_put; 7234 } 7235 7236 ipr_regs_pci = pci_resource_start(pdev, 0); 7237 7238 rc = pci_request_regions(pdev, IPR_NAME); 7239 if (rc < 0) { 7240 dev_err(&pdev->dev, 7241 "Couldn't register memory range of registers\n"); 7242 goto out_scsi_host_put; 7243 } 7244 7245 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0)); 7246 7247 if (!ipr_regs) { 7248 dev_err(&pdev->dev, 7249 "Couldn't map memory range of registers\n"); 7250 rc = -ENOMEM; 7251 goto out_release_regions; 7252 } 7253 7254 ioa_cfg->hdw_dma_regs = ipr_regs; 7255 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 7256 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 7257 7258 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 7259 7260 pci_set_master(pdev); 7261 7262 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 7263 if (rc < 0) { 7264 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); 7265 goto cleanup_nomem; 7266 } 7267 7268 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 7269 ioa_cfg->chip_cfg->cache_line_size); 7270 7271 if (rc != PCIBIOS_SUCCESSFUL) { 7272 dev_err(&pdev->dev, "Write of cache line size failed\n"); 7273 rc = -EIO; 7274 goto cleanup_nomem; 7275 } 7276 7277 /* Save away PCI config space for use following IOA reset */ 7278 rc = pci_save_state(pdev); 7279 7280 if (rc != PCIBIOS_SUCCESSFUL) { 7281 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 7282 rc = -EIO; 7283 goto cleanup_nomem; 7284 } 7285 7286 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 7287 goto cleanup_nomem; 7288 7289 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 7290 goto cleanup_nomem; 7291 7292 rc = ipr_alloc_mem(ioa_cfg); 7293 if (rc < 0) { 7294 dev_err(&pdev->dev, 7295 "Couldn't allocate enough memory for device driver!\n"); 7296 goto cleanup_nomem; 7297 } 7298 7299 /* 7300 * If HRRQ updated interrupt is not masked, or reset alert is set, 7301 * the card is in an unknown state and needs a hard reset 7302 */ 7303 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7304 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg); 7305 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 7306 ioa_cfg->needs_hard_reset = 1; 7307 7308 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 7309 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg); 7310 7311 if (rc) { 7312 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 7313 pdev->irq, rc); 7314 goto cleanup_nolog; 7315 } 7316 7317 spin_lock(&ipr_driver_lock); 7318 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 7319 spin_unlock(&ipr_driver_lock); 7320 7321 LEAVE; 7322out: 7323 return rc; 7324 7325cleanup_nolog: 7326 ipr_free_mem(ioa_cfg); 7327cleanup_nomem: 7328 iounmap(ipr_regs); 7329out_release_regions: 7330 pci_release_regions(pdev); 7331out_scsi_host_put: 7332 scsi_host_put(host); 7333out_disable: 7334 pci_disable_device(pdev); 7335 goto out; 7336} 7337 7338/** 7339 * ipr_scan_vsets - Scans for VSET devices 7340 * @ioa_cfg: ioa config struct 7341 * 7342 * Description: Since the VSET resources do not follow SAM in that we can have 7343 * sparse LUNs with no LUN 0, we have to scan for these ourselves. 7344 * 7345 * Return value: 7346 * none 7347 **/ 7348static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) 7349{ 7350 int target, lun; 7351 7352 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) 7353 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) 7354 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); 7355} 7356 7357/** 7358 * ipr_initiate_ioa_bringdown - Bring down an adapter 7359 * @ioa_cfg: ioa config struct 7360 * @shutdown_type: shutdown type 7361 * 7362 * Description: This function will initiate bringing down the adapter. 7363 * This consists of issuing an IOA shutdown to the adapter 7364 * to flush the cache, and running BIST. 7365 * If the caller needs to wait on the completion of the reset, 7366 * the caller must sleep on the reset_wait_q. 7367 * 7368 * Return value: 7369 * none 7370 **/ 7371static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 7372 enum ipr_shutdown_type shutdown_type) 7373{ 7374 ENTER; 7375 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 7376 ioa_cfg->sdt_state = ABORT_DUMP; 7377 ioa_cfg->reset_retries = 0; 7378 ioa_cfg->in_ioa_bringdown = 1; 7379 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 7380 LEAVE; 7381} 7382 7383/** 7384 * __ipr_remove - Remove a single adapter 7385 * @pdev: pci device struct 7386 * 7387 * Adapter hot plug remove entry point. 7388 * 7389 * Return value: 7390 * none 7391 **/ 7392static void __ipr_remove(struct pci_dev *pdev) 7393{ 7394 unsigned long host_lock_flags = 0; 7395 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7396 ENTER; 7397 7398 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7399 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 7400 7401 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7402 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7403 flush_scheduled_work(); 7404 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7405 7406 spin_lock(&ipr_driver_lock); 7407 list_del(&ioa_cfg->queue); 7408 spin_unlock(&ipr_driver_lock); 7409 7410 if (ioa_cfg->sdt_state == ABORT_DUMP) 7411 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 7412 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7413 7414 ipr_free_all_resources(ioa_cfg); 7415 7416 LEAVE; 7417} 7418 7419/** 7420 * ipr_remove - IOA hot plug remove entry point 7421 * @pdev: pci device struct 7422 * 7423 * Adapter hot plug remove entry point. 7424 * 7425 * Return value: 7426 * none 7427 **/ 7428static void ipr_remove(struct pci_dev *pdev) 7429{ 7430 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7431 7432 ENTER; 7433 7434 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7435 &ipr_trace_attr); 7436 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj, 7437 &ipr_dump_attr); 7438 scsi_remove_host(ioa_cfg->host); 7439 7440 __ipr_remove(pdev); 7441 7442 LEAVE; 7443} 7444 7445/** 7446 * ipr_probe - Adapter hot plug add entry point 7447 * 7448 * Return value: 7449 * 0 on success / non-zero on failure 7450 **/ 7451static int __devinit ipr_probe(struct pci_dev *pdev, 7452 const struct pci_device_id *dev_id) 7453{ 7454 struct ipr_ioa_cfg *ioa_cfg; 7455 int rc; 7456 7457 rc = ipr_probe_ioa(pdev, dev_id); 7458 7459 if (rc) 7460 return rc; 7461 7462 ioa_cfg = pci_get_drvdata(pdev); 7463 rc = ipr_probe_ioa_part2(ioa_cfg); 7464 7465 if (rc) { 7466 __ipr_remove(pdev); 7467 return rc; 7468 } 7469 7470 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 7471 7472 if (rc) { 7473 __ipr_remove(pdev); 7474 return rc; 7475 } 7476 7477 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7478 &ipr_trace_attr); 7479 7480 if (rc) { 7481 scsi_remove_host(ioa_cfg->host); 7482 __ipr_remove(pdev); 7483 return rc; 7484 } 7485 7486 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj, 7487 &ipr_dump_attr); 7488 7489 if (rc) { 7490 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7491 &ipr_trace_attr); 7492 scsi_remove_host(ioa_cfg->host); 7493 __ipr_remove(pdev); 7494 return rc; 7495 } 7496 7497 scsi_scan_host(ioa_cfg->host); 7498 ipr_scan_vsets(ioa_cfg); 7499 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); 7500 ioa_cfg->allow_ml_add_del = 1; 7501 ioa_cfg->host->max_channel = IPR_VSET_BUS; 7502 schedule_work(&ioa_cfg->work_q); 7503 return 0; 7504} 7505 7506/** 7507 * ipr_shutdown - Shutdown handler. 7508 * @pdev: pci device struct 7509 * 7510 * This function is invoked upon system shutdown/reboot. It will issue 7511 * an adapter shutdown to the adapter to flush the write cache. 7512 * 7513 * Return value: 7514 * none 7515 **/ 7516static void ipr_shutdown(struct pci_dev *pdev) 7517{ 7518 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7519 unsigned long lock_flags = 0; 7520 7521 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 7522 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 7523 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 7524 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7525} 7526 7527static struct pci_device_id ipr_pci_table[] __devinitdata = { 7528 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7529 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 }, 7530 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7531 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 }, 7532 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7533 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 }, 7534 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7535 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 }, 7536 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7537 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 }, 7538 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7539 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 }, 7540 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7541 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 }, 7542 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7543 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 0 }, 7544 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7545 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 7546 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7547 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 }, 7548 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7549 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 0 }, 7550 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7551 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 7552 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7553 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 }, 7554 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7555 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 0 }, 7556 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7557 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 0 }, 7558 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 7559 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 }, 7560 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7561 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 }, 7562 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7563 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 0 }, 7564 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7565 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 0 }, 7566 { } 7567}; 7568MODULE_DEVICE_TABLE(pci, ipr_pci_table); 7569 7570static struct pci_error_handlers ipr_err_handler = { 7571 .error_detected = ipr_pci_error_detected, 7572 .slot_reset = ipr_pci_slot_reset, 7573}; 7574 7575static struct pci_driver ipr_driver = { 7576 .name = IPR_NAME, 7577 .id_table = ipr_pci_table, 7578 .probe = ipr_probe, 7579 .remove = ipr_remove, 7580 .shutdown = ipr_shutdown, 7581 .err_handler = &ipr_err_handler, 7582}; 7583 7584/** 7585 * ipr_init - Module entry point 7586 * 7587 * Return value: 7588 * 0 on success / negative value on failure 7589 **/ 7590static int __init ipr_init(void) 7591{ 7592 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 7593 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 7594 7595 return pci_register_driver(&ipr_driver); 7596} 7597 7598/** 7599 * ipr_exit - Module unload 7600 * 7601 * Module unload entry point. 7602 * 7603 * Return value: 7604 * none 7605 **/ 7606static void __exit ipr_exit(void) 7607{ 7608 pci_unregister_driver(&ipr_driver); 7609} 7610 7611module_init(ipr_init); 7612module_exit(ipr_exit); 7613