ipr.c revision cc9bd5d4256ecc1b6e0448febb4be29db1a91256
1/* 2 * ipr.c -- driver for IBM Power Linux RAID adapters 3 * 4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation 5 * 6 * Copyright (C) 2003, 2004 IBM Corporation 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23 24/* 25 * Notes: 26 * 27 * This driver is used to control the following SCSI adapters: 28 * 29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B 30 * 31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter 32 * PCI-X Dual Channel Ultra 320 SCSI Adapter 33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card 34 * Embedded SCSI adapter on p615 and p655 systems 35 * 36 * Supported Hardware Features: 37 * - Ultra 320 SCSI controller 38 * - PCI-X host interface 39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine 40 * - Non-Volatile Write Cache 41 * - Supports attachment of non-RAID disks, tape, and optical devices 42 * - RAID Levels 0, 5, 10 43 * - Hot spare 44 * - Background Parity Checking 45 * - Background Data Scrubbing 46 * - Ability to increase the capacity of an existing RAID 5 disk array 47 * by adding disks 48 * 49 * Driver Features: 50 * - Tagged command queuing 51 * - Adapter microcode download 52 * - PCI hot plug 53 * - SCSI device hot plug 54 * 55 */ 56 57#include <linux/fs.h> 58#include <linux/init.h> 59#include <linux/types.h> 60#include <linux/errno.h> 61#include <linux/kernel.h> 62#include <linux/ioport.h> 63#include <linux/delay.h> 64#include <linux/pci.h> 65#include <linux/wait.h> 66#include <linux/spinlock.h> 67#include <linux/sched.h> 68#include <linux/interrupt.h> 69#include <linux/blkdev.h> 70#include <linux/firmware.h> 71#include <linux/module.h> 72#include <linux/moduleparam.h> 73#include <linux/libata.h> 74#include <asm/io.h> 75#include <asm/irq.h> 76#include <asm/processor.h> 77#include <scsi/scsi.h> 78#include <scsi/scsi_host.h> 79#include <scsi/scsi_tcq.h> 80#include <scsi/scsi_eh.h> 81#include <scsi/scsi_cmnd.h> 82#include "ipr.h" 83 84/* 85 * Global Data 86 */ 87static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head); 88static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL; 89static unsigned int ipr_max_speed = 1; 90static int ipr_testmode = 0; 91static unsigned int ipr_fastfail = 0; 92static unsigned int ipr_transop_timeout = 0; 93static unsigned int ipr_enable_cache = 1; 94static unsigned int ipr_debug = 0; 95static DEFINE_SPINLOCK(ipr_driver_lock); 96 97/* This table describes the differences between DMA controller chips */ 98static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { 99 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */ 100 .mailbox = 0x0042C, 101 .cache_line_size = 0x20, 102 { 103 .set_interrupt_mask_reg = 0x0022C, 104 .clr_interrupt_mask_reg = 0x00230, 105 .sense_interrupt_mask_reg = 0x0022C, 106 .clr_interrupt_reg = 0x00228, 107 .sense_interrupt_reg = 0x00224, 108 .ioarrin_reg = 0x00404, 109 .sense_uproc_interrupt_reg = 0x00214, 110 .set_uproc_interrupt_reg = 0x00214, 111 .clr_uproc_interrupt_reg = 0x00218 112 } 113 }, 114 { /* Snipe and Scamp */ 115 .mailbox = 0x0052C, 116 .cache_line_size = 0x20, 117 { 118 .set_interrupt_mask_reg = 0x00288, 119 .clr_interrupt_mask_reg = 0x0028C, 120 .sense_interrupt_mask_reg = 0x00288, 121 .clr_interrupt_reg = 0x00284, 122 .sense_interrupt_reg = 0x00280, 123 .ioarrin_reg = 0x00504, 124 .sense_uproc_interrupt_reg = 0x00290, 125 .set_uproc_interrupt_reg = 0x00290, 126 .clr_uproc_interrupt_reg = 0x00294 127 } 128 }, 129}; 130 131static const struct ipr_chip_t ipr_chip[] = { 132 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] }, 133 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] }, 134 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] }, 135 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] }, 136 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &ipr_chip_cfg[0] }, 137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] }, 138 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] } 139}; 140 141static int ipr_max_bus_speeds [] = { 142 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE 143}; 144 145MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); 146MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); 147module_param_named(max_speed, ipr_max_speed, uint, 0); 148MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); 149module_param_named(log_level, ipr_log_level, uint, 0); 150MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); 151module_param_named(testmode, ipr_testmode, int, 0); 152MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); 153module_param_named(fastfail, ipr_fastfail, int, 0); 154MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); 155module_param_named(transop_timeout, ipr_transop_timeout, int, 0); 156MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); 157module_param_named(enable_cache, ipr_enable_cache, int, 0); 158MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)"); 159module_param_named(debug, ipr_debug, int, 0); 160MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)"); 161MODULE_LICENSE("GPL"); 162MODULE_VERSION(IPR_DRIVER_VERSION); 163 164/* A constant array of IOASCs/URCs/Error Messages */ 165static const 166struct ipr_error_table_t ipr_error_table[] = { 167 {0x00000000, 1, 1, 168 "8155: An unknown error was received"}, 169 {0x00330000, 0, 0, 170 "Soft underlength error"}, 171 {0x005A0000, 0, 0, 172 "Command to be cancelled not found"}, 173 {0x00808000, 0, 0, 174 "Qualified success"}, 175 {0x01080000, 1, 1, 176 "FFFE: Soft device bus error recovered by the IOA"}, 177 {0x01088100, 0, 1, 178 "4101: Soft device bus fabric error"}, 179 {0x01170600, 0, 1, 180 "FFF9: Device sector reassign successful"}, 181 {0x01170900, 0, 1, 182 "FFF7: Media error recovered by device rewrite procedures"}, 183 {0x01180200, 0, 1, 184 "7001: IOA sector reassignment successful"}, 185 {0x01180500, 0, 1, 186 "FFF9: Soft media error. Sector reassignment recommended"}, 187 {0x01180600, 0, 1, 188 "FFF7: Media error recovered by IOA rewrite procedures"}, 189 {0x01418000, 0, 1, 190 "FF3D: Soft PCI bus error recovered by the IOA"}, 191 {0x01440000, 1, 1, 192 "FFF6: Device hardware error recovered by the IOA"}, 193 {0x01448100, 0, 1, 194 "FFF6: Device hardware error recovered by the device"}, 195 {0x01448200, 1, 1, 196 "FF3D: Soft IOA error recovered by the IOA"}, 197 {0x01448300, 0, 1, 198 "FFFA: Undefined device response recovered by the IOA"}, 199 {0x014A0000, 1, 1, 200 "FFF6: Device bus error, message or command phase"}, 201 {0x014A8000, 0, 1, 202 "FFFE: Task Management Function failed"}, 203 {0x015D0000, 0, 1, 204 "FFF6: Failure prediction threshold exceeded"}, 205 {0x015D9200, 0, 1, 206 "8009: Impending cache battery pack failure"}, 207 {0x02040400, 0, 0, 208 "34FF: Disk device format in progress"}, 209 {0x023F0000, 0, 0, 210 "Synchronization required"}, 211 {0x024E0000, 0, 0, 212 "No ready, IOA shutdown"}, 213 {0x025A0000, 0, 0, 214 "Not ready, IOA has been shutdown"}, 215 {0x02670100, 0, 1, 216 "3020: Storage subsystem configuration error"}, 217 {0x03110B00, 0, 0, 218 "FFF5: Medium error, data unreadable, recommend reassign"}, 219 {0x03110C00, 0, 0, 220 "7000: Medium error, data unreadable, do not reassign"}, 221 {0x03310000, 0, 1, 222 "FFF3: Disk media format bad"}, 223 {0x04050000, 0, 1, 224 "3002: Addressed device failed to respond to selection"}, 225 {0x04080000, 1, 1, 226 "3100: Device bus error"}, 227 {0x04080100, 0, 1, 228 "3109: IOA timed out a device command"}, 229 {0x04088000, 0, 0, 230 "3120: SCSI bus is not operational"}, 231 {0x04088100, 0, 1, 232 "4100: Hard device bus fabric error"}, 233 {0x04118000, 0, 1, 234 "9000: IOA reserved area data check"}, 235 {0x04118100, 0, 1, 236 "9001: IOA reserved area invalid data pattern"}, 237 {0x04118200, 0, 1, 238 "9002: IOA reserved area LRC error"}, 239 {0x04320000, 0, 1, 240 "102E: Out of alternate sectors for disk storage"}, 241 {0x04330000, 1, 1, 242 "FFF4: Data transfer underlength error"}, 243 {0x04338000, 1, 1, 244 "FFF4: Data transfer overlength error"}, 245 {0x043E0100, 0, 1, 246 "3400: Logical unit failure"}, 247 {0x04408500, 0, 1, 248 "FFF4: Device microcode is corrupt"}, 249 {0x04418000, 1, 1, 250 "8150: PCI bus error"}, 251 {0x04430000, 1, 0, 252 "Unsupported device bus message received"}, 253 {0x04440000, 1, 1, 254 "FFF4: Disk device problem"}, 255 {0x04448200, 1, 1, 256 "8150: Permanent IOA failure"}, 257 {0x04448300, 0, 1, 258 "3010: Disk device returned wrong response to IOA"}, 259 {0x04448400, 0, 1, 260 "8151: IOA microcode error"}, 261 {0x04448500, 0, 0, 262 "Device bus status error"}, 263 {0x04448600, 0, 1, 264 "8157: IOA error requiring IOA reset to recover"}, 265 {0x04448700, 0, 0, 266 "ATA device status error"}, 267 {0x04490000, 0, 0, 268 "Message reject received from the device"}, 269 {0x04449200, 0, 1, 270 "8008: A permanent cache battery pack failure occurred"}, 271 {0x0444A000, 0, 1, 272 "9090: Disk unit has been modified after the last known status"}, 273 {0x0444A200, 0, 1, 274 "9081: IOA detected device error"}, 275 {0x0444A300, 0, 1, 276 "9082: IOA detected device error"}, 277 {0x044A0000, 1, 1, 278 "3110: Device bus error, message or command phase"}, 279 {0x044A8000, 1, 1, 280 "3110: SAS Command / Task Management Function failed"}, 281 {0x04670400, 0, 1, 282 "9091: Incorrect hardware configuration change has been detected"}, 283 {0x04678000, 0, 1, 284 "9073: Invalid multi-adapter configuration"}, 285 {0x04678100, 0, 1, 286 "4010: Incorrect connection between cascaded expanders"}, 287 {0x04678200, 0, 1, 288 "4020: Connections exceed IOA design limits"}, 289 {0x04678300, 0, 1, 290 "4030: Incorrect multipath connection"}, 291 {0x04679000, 0, 1, 292 "4110: Unsupported enclosure function"}, 293 {0x046E0000, 0, 1, 294 "FFF4: Command to logical unit failed"}, 295 {0x05240000, 1, 0, 296 "Illegal request, invalid request type or request packet"}, 297 {0x05250000, 0, 0, 298 "Illegal request, invalid resource handle"}, 299 {0x05258000, 0, 0, 300 "Illegal request, commands not allowed to this device"}, 301 {0x05258100, 0, 0, 302 "Illegal request, command not allowed to a secondary adapter"}, 303 {0x05260000, 0, 0, 304 "Illegal request, invalid field in parameter list"}, 305 {0x05260100, 0, 0, 306 "Illegal request, parameter not supported"}, 307 {0x05260200, 0, 0, 308 "Illegal request, parameter value invalid"}, 309 {0x052C0000, 0, 0, 310 "Illegal request, command sequence error"}, 311 {0x052C8000, 1, 0, 312 "Illegal request, dual adapter support not enabled"}, 313 {0x06040500, 0, 1, 314 "9031: Array protection temporarily suspended, protection resuming"}, 315 {0x06040600, 0, 1, 316 "9040: Array protection temporarily suspended, protection resuming"}, 317 {0x06288000, 0, 1, 318 "3140: Device bus not ready to ready transition"}, 319 {0x06290000, 0, 1, 320 "FFFB: SCSI bus was reset"}, 321 {0x06290500, 0, 0, 322 "FFFE: SCSI bus transition to single ended"}, 323 {0x06290600, 0, 0, 324 "FFFE: SCSI bus transition to LVD"}, 325 {0x06298000, 0, 1, 326 "FFFB: SCSI bus was reset by another initiator"}, 327 {0x063F0300, 0, 1, 328 "3029: A device replacement has occurred"}, 329 {0x064C8000, 0, 1, 330 "9051: IOA cache data exists for a missing or failed device"}, 331 {0x064C8100, 0, 1, 332 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"}, 333 {0x06670100, 0, 1, 334 "9025: Disk unit is not supported at its physical location"}, 335 {0x06670600, 0, 1, 336 "3020: IOA detected a SCSI bus configuration error"}, 337 {0x06678000, 0, 1, 338 "3150: SCSI bus configuration error"}, 339 {0x06678100, 0, 1, 340 "9074: Asymmetric advanced function disk configuration"}, 341 {0x06678300, 0, 1, 342 "4040: Incomplete multipath connection between IOA and enclosure"}, 343 {0x06678400, 0, 1, 344 "4041: Incomplete multipath connection between enclosure and device"}, 345 {0x06678500, 0, 1, 346 "9075: Incomplete multipath connection between IOA and remote IOA"}, 347 {0x06678600, 0, 1, 348 "9076: Configuration error, missing remote IOA"}, 349 {0x06679100, 0, 1, 350 "4050: Enclosure does not support a required multipath function"}, 351 {0x06690200, 0, 1, 352 "9041: Array protection temporarily suspended"}, 353 {0x06698200, 0, 1, 354 "9042: Corrupt array parity detected on specified device"}, 355 {0x066B0200, 0, 1, 356 "9030: Array no longer protected due to missing or failed disk unit"}, 357 {0x066B8000, 0, 1, 358 "9071: Link operational transition"}, 359 {0x066B8100, 0, 1, 360 "9072: Link not operational transition"}, 361 {0x066B8200, 0, 1, 362 "9032: Array exposed but still protected"}, 363 {0x066B9100, 0, 1, 364 "4061: Multipath redundancy level got better"}, 365 {0x066B9200, 0, 1, 366 "4060: Multipath redundancy level got worse"}, 367 {0x07270000, 0, 0, 368 "Failure due to other device"}, 369 {0x07278000, 0, 1, 370 "9008: IOA does not support functions expected by devices"}, 371 {0x07278100, 0, 1, 372 "9010: Cache data associated with attached devices cannot be found"}, 373 {0x07278200, 0, 1, 374 "9011: Cache data belongs to devices other than those attached"}, 375 {0x07278400, 0, 1, 376 "9020: Array missing 2 or more devices with only 1 device present"}, 377 {0x07278500, 0, 1, 378 "9021: Array missing 2 or more devices with 2 or more devices present"}, 379 {0x07278600, 0, 1, 380 "9022: Exposed array is missing a required device"}, 381 {0x07278700, 0, 1, 382 "9023: Array member(s) not at required physical locations"}, 383 {0x07278800, 0, 1, 384 "9024: Array not functional due to present hardware configuration"}, 385 {0x07278900, 0, 1, 386 "9026: Array not functional due to present hardware configuration"}, 387 {0x07278A00, 0, 1, 388 "9027: Array is missing a device and parity is out of sync"}, 389 {0x07278B00, 0, 1, 390 "9028: Maximum number of arrays already exist"}, 391 {0x07278C00, 0, 1, 392 "9050: Required cache data cannot be located for a disk unit"}, 393 {0x07278D00, 0, 1, 394 "9052: Cache data exists for a device that has been modified"}, 395 {0x07278F00, 0, 1, 396 "9054: IOA resources not available due to previous problems"}, 397 {0x07279100, 0, 1, 398 "9092: Disk unit requires initialization before use"}, 399 {0x07279200, 0, 1, 400 "9029: Incorrect hardware configuration change has been detected"}, 401 {0x07279600, 0, 1, 402 "9060: One or more disk pairs are missing from an array"}, 403 {0x07279700, 0, 1, 404 "9061: One or more disks are missing from an array"}, 405 {0x07279800, 0, 1, 406 "9062: One or more disks are missing from an array"}, 407 {0x07279900, 0, 1, 408 "9063: Maximum number of functional arrays has been exceeded"}, 409 {0x0B260000, 0, 0, 410 "Aborted command, invalid descriptor"}, 411 {0x0B5A0000, 0, 0, 412 "Command terminated by host"} 413}; 414 415static const struct ipr_ses_table_entry ipr_ses_table[] = { 416 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, 417 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, 418 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ 419 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ 420 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ 421 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ 422 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, 423 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, 424 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 425 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 426 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, 427 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, 428 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } 429}; 430 431/* 432 * Function Prototypes 433 */ 434static int ipr_reset_alert(struct ipr_cmnd *); 435static void ipr_process_ccn(struct ipr_cmnd *); 436static void ipr_process_error(struct ipr_cmnd *); 437static void ipr_reset_ioa_job(struct ipr_cmnd *); 438static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, 439 enum ipr_shutdown_type); 440 441#ifdef CONFIG_SCSI_IPR_TRACE 442/** 443 * ipr_trc_hook - Add a trace entry to the driver trace 444 * @ipr_cmd: ipr command struct 445 * @type: trace type 446 * @add_data: additional data 447 * 448 * Return value: 449 * none 450 **/ 451static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, 452 u8 type, u32 add_data) 453{ 454 struct ipr_trace_entry *trace_entry; 455 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 456 457 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++]; 458 trace_entry->time = jiffies; 459 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; 460 trace_entry->type = type; 461 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command; 462 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff; 463 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; 464 trace_entry->u.add_data = add_data; 465} 466#else 467#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0) 468#endif 469 470/** 471 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse 472 * @ipr_cmd: ipr command struct 473 * 474 * Return value: 475 * none 476 **/ 477static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 478{ 479 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 480 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 481 482 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 483 ioarcb->write_data_transfer_length = 0; 484 ioarcb->read_data_transfer_length = 0; 485 ioarcb->write_ioadl_len = 0; 486 ioarcb->read_ioadl_len = 0; 487 ioasa->ioasc = 0; 488 ioasa->residual_data_len = 0; 489 ioasa->u.gata.status = 0; 490 491 ipr_cmd->scsi_cmd = NULL; 492 ipr_cmd->qc = NULL; 493 ipr_cmd->sense_buffer[0] = 0; 494 ipr_cmd->dma_use_sg = 0; 495} 496 497/** 498 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block 499 * @ipr_cmd: ipr command struct 500 * 501 * Return value: 502 * none 503 **/ 504static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 505{ 506 ipr_reinit_ipr_cmnd(ipr_cmd); 507 ipr_cmd->u.scratch = 0; 508 ipr_cmd->sibling = NULL; 509 init_timer(&ipr_cmd->timer); 510} 511 512/** 513 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block 514 * @ioa_cfg: ioa config struct 515 * 516 * Return value: 517 * pointer to ipr command struct 518 **/ 519static 520struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) 521{ 522 struct ipr_cmnd *ipr_cmd; 523 524 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue); 525 list_del(&ipr_cmd->queue); 526 ipr_init_ipr_cmnd(ipr_cmd); 527 528 return ipr_cmd; 529} 530 531/** 532 * ipr_unmap_sglist - Unmap scatterlist if mapped 533 * @ioa_cfg: ioa config struct 534 * @ipr_cmd: ipr command struct 535 * 536 * Return value: 537 * nothing 538 **/ 539static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg, 540 struct ipr_cmnd *ipr_cmd) 541{ 542 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 543 544 if (ipr_cmd->dma_use_sg) { 545 if (scsi_cmd->use_sg > 0) { 546 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer, 547 scsi_cmd->use_sg, 548 scsi_cmd->sc_data_direction); 549 } else { 550 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle, 551 scsi_cmd->request_bufflen, 552 scsi_cmd->sc_data_direction); 553 } 554 } 555} 556 557/** 558 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts 559 * @ioa_cfg: ioa config struct 560 * @clr_ints: interrupts to clear 561 * 562 * This function masks all interrupts on the adapter, then clears the 563 * interrupts specified in the mask 564 * 565 * Return value: 566 * none 567 **/ 568static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, 569 u32 clr_ints) 570{ 571 volatile u32 int_reg; 572 573 /* Stop new interrupts */ 574 ioa_cfg->allow_interrupts = 0; 575 576 /* Set interrupt mask to stop all new interrupts */ 577 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); 578 579 /* Clear any pending interrupts */ 580 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg); 581 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 582} 583 584/** 585 * ipr_save_pcix_cmd_reg - Save PCI-X command register 586 * @ioa_cfg: ioa config struct 587 * 588 * Return value: 589 * 0 on success / -EIO on failure 590 **/ 591static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 592{ 593 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 594 595 if (pcix_cmd_reg == 0) 596 return 0; 597 598 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 599 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 600 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 601 return -EIO; 602 } 603 604 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; 605 return 0; 606} 607 608/** 609 * ipr_set_pcix_cmd_reg - Setup PCI-X command register 610 * @ioa_cfg: ioa config struct 611 * 612 * Return value: 613 * 0 on success / -EIO on failure 614 **/ 615static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 616{ 617 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 618 619 if (pcix_cmd_reg) { 620 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 621 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 622 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); 623 return -EIO; 624 } 625 } 626 627 return 0; 628} 629 630/** 631 * ipr_sata_eh_done - done function for aborted SATA commands 632 * @ipr_cmd: ipr command struct 633 * 634 * This function is invoked for ops generated to SATA 635 * devices which are being aborted. 636 * 637 * Return value: 638 * none 639 **/ 640static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd) 641{ 642 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 643 struct ata_queued_cmd *qc = ipr_cmd->qc; 644 struct ipr_sata_port *sata_port = qc->ap->private_data; 645 646 qc->err_mask |= AC_ERR_OTHER; 647 sata_port->ioasa.status |= ATA_BUSY; 648 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 649 ata_qc_complete(qc); 650} 651 652/** 653 * ipr_scsi_eh_done - mid-layer done function for aborted ops 654 * @ipr_cmd: ipr command struct 655 * 656 * This function is invoked by the interrupt handler for 657 * ops generated by the SCSI mid-layer which are being aborted. 658 * 659 * Return value: 660 * none 661 **/ 662static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 663{ 664 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 665 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 666 667 scsi_cmd->result |= (DID_ERROR << 16); 668 669 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 670 scsi_cmd->scsi_done(scsi_cmd); 671 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 672} 673 674/** 675 * ipr_fail_all_ops - Fails all outstanding ops. 676 * @ioa_cfg: ioa config struct 677 * 678 * This function fails all outstanding ops. 679 * 680 * Return value: 681 * none 682 **/ 683static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) 684{ 685 struct ipr_cmnd *ipr_cmd, *temp; 686 687 ENTER; 688 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) { 689 list_del(&ipr_cmd->queue); 690 691 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); 692 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID); 693 694 if (ipr_cmd->scsi_cmd) 695 ipr_cmd->done = ipr_scsi_eh_done; 696 else if (ipr_cmd->qc) 697 ipr_cmd->done = ipr_sata_eh_done; 698 699 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET); 700 del_timer(&ipr_cmd->timer); 701 ipr_cmd->done(ipr_cmd); 702 } 703 704 LEAVE; 705} 706 707/** 708 * ipr_do_req - Send driver initiated requests. 709 * @ipr_cmd: ipr command struct 710 * @done: done function 711 * @timeout_func: timeout function 712 * @timeout: timeout value 713 * 714 * This function sends the specified command to the adapter with the 715 * timeout given. The done function is invoked on command completion. 716 * 717 * Return value: 718 * none 719 **/ 720static void ipr_do_req(struct ipr_cmnd *ipr_cmd, 721 void (*done) (struct ipr_cmnd *), 722 void (*timeout_func) (struct ipr_cmnd *), u32 timeout) 723{ 724 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 725 726 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 727 728 ipr_cmd->done = done; 729 730 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 731 ipr_cmd->timer.expires = jiffies + timeout; 732 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func; 733 734 add_timer(&ipr_cmd->timer); 735 736 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); 737 738 mb(); 739 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 740 ioa_cfg->regs.ioarrin_reg); 741} 742 743/** 744 * ipr_internal_cmd_done - Op done function for an internally generated op. 745 * @ipr_cmd: ipr command struct 746 * 747 * This function is the op done function for an internally generated, 748 * blocking op. It simply wakes the sleeping thread. 749 * 750 * Return value: 751 * none 752 **/ 753static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) 754{ 755 if (ipr_cmd->sibling) 756 ipr_cmd->sibling = NULL; 757 else 758 complete(&ipr_cmd->completion); 759} 760 761/** 762 * ipr_send_blocking_cmd - Send command and sleep on its completion. 763 * @ipr_cmd: ipr command struct 764 * @timeout_func: function to invoke if command times out 765 * @timeout: timeout 766 * 767 * Return value: 768 * none 769 **/ 770static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, 771 void (*timeout_func) (struct ipr_cmnd *ipr_cmd), 772 u32 timeout) 773{ 774 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 775 776 init_completion(&ipr_cmd->completion); 777 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); 778 779 spin_unlock_irq(ioa_cfg->host->host_lock); 780 wait_for_completion(&ipr_cmd->completion); 781 spin_lock_irq(ioa_cfg->host->host_lock); 782} 783 784/** 785 * ipr_send_hcam - Send an HCAM to the adapter. 786 * @ioa_cfg: ioa config struct 787 * @type: HCAM type 788 * @hostrcb: hostrcb struct 789 * 790 * This function will send a Host Controlled Async command to the adapter. 791 * If HCAMs are currently not allowed to be issued to the adapter, it will 792 * place the hostrcb on the free queue. 793 * 794 * Return value: 795 * none 796 **/ 797static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, 798 struct ipr_hostrcb *hostrcb) 799{ 800 struct ipr_cmnd *ipr_cmd; 801 struct ipr_ioarcb *ioarcb; 802 803 if (ioa_cfg->allow_cmds) { 804 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 805 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 806 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); 807 808 ipr_cmd->u.hostrcb = hostrcb; 809 ioarcb = &ipr_cmd->ioarcb; 810 811 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 812 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; 813 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; 814 ioarcb->cmd_pkt.cdb[1] = type; 815 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; 816 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; 817 818 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam)); 819 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 820 ipr_cmd->ioadl[0].flags_and_data_len = 821 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam)); 822 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma); 823 824 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) 825 ipr_cmd->done = ipr_process_ccn; 826 else 827 ipr_cmd->done = ipr_process_error; 828 829 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); 830 831 mb(); 832 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 833 ioa_cfg->regs.ioarrin_reg); 834 } else { 835 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 836 } 837} 838 839/** 840 * ipr_init_res_entry - Initialize a resource entry struct. 841 * @res: resource entry struct 842 * 843 * Return value: 844 * none 845 **/ 846static void ipr_init_res_entry(struct ipr_resource_entry *res) 847{ 848 res->needs_sync_complete = 0; 849 res->in_erp = 0; 850 res->add_to_ml = 0; 851 res->del_from_ml = 0; 852 res->resetting_device = 0; 853 res->sdev = NULL; 854 res->sata_port = NULL; 855} 856 857/** 858 * ipr_handle_config_change - Handle a config change from the adapter 859 * @ioa_cfg: ioa config struct 860 * @hostrcb: hostrcb 861 * 862 * Return value: 863 * none 864 **/ 865static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, 866 struct ipr_hostrcb *hostrcb) 867{ 868 struct ipr_resource_entry *res = NULL; 869 struct ipr_config_table_entry *cfgte; 870 u32 is_ndn = 1; 871 872 cfgte = &hostrcb->hcam.u.ccn.cfgte; 873 874 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 875 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr, 876 sizeof(cfgte->res_addr))) { 877 is_ndn = 0; 878 break; 879 } 880 } 881 882 if (is_ndn) { 883 if (list_empty(&ioa_cfg->free_res_q)) { 884 ipr_send_hcam(ioa_cfg, 885 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 886 hostrcb); 887 return; 888 } 889 890 res = list_entry(ioa_cfg->free_res_q.next, 891 struct ipr_resource_entry, queue); 892 893 list_del(&res->queue); 894 ipr_init_res_entry(res); 895 list_add_tail(&res->queue, &ioa_cfg->used_res_q); 896 } 897 898 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 899 900 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { 901 if (res->sdev) { 902 res->del_from_ml = 1; 903 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE; 904 if (ioa_cfg->allow_ml_add_del) 905 schedule_work(&ioa_cfg->work_q); 906 } else 907 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 908 } else if (!res->sdev) { 909 res->add_to_ml = 1; 910 if (ioa_cfg->allow_ml_add_del) 911 schedule_work(&ioa_cfg->work_q); 912 } 913 914 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 915} 916 917/** 918 * ipr_process_ccn - Op done function for a CCN. 919 * @ipr_cmd: ipr command struct 920 * 921 * This function is the op done function for a configuration 922 * change notification host controlled async from the adapter. 923 * 924 * Return value: 925 * none 926 **/ 927static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) 928{ 929 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 930 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 931 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 932 933 list_del(&hostrcb->queue); 934 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 935 936 if (ioasc) { 937 if (ioasc != IPR_IOASC_IOA_WAS_RESET) 938 dev_err(&ioa_cfg->pdev->dev, 939 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 940 941 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 942 } else { 943 ipr_handle_config_change(ioa_cfg, hostrcb); 944 } 945} 946 947/** 948 * ipr_log_vpd - Log the passed VPD to the error log. 949 * @vpd: vendor/product id/sn struct 950 * 951 * Return value: 952 * none 953 **/ 954static void ipr_log_vpd(struct ipr_vpd *vpd) 955{ 956 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN 957 + IPR_SERIAL_NUM_LEN]; 958 959 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 960 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id, 961 IPR_PROD_ID_LEN); 962 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; 963 ipr_err("Vendor/Product ID: %s\n", buffer); 964 965 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN); 966 buffer[IPR_SERIAL_NUM_LEN] = '\0'; 967 ipr_err(" Serial Number: %s\n", buffer); 968} 969 970/** 971 * ipr_log_ext_vpd - Log the passed extended VPD to the error log. 972 * @vpd: vendor/product id/sn/wwn struct 973 * 974 * Return value: 975 * none 976 **/ 977static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd) 978{ 979 ipr_log_vpd(&vpd->vpd); 980 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]), 981 be32_to_cpu(vpd->wwid[1])); 982} 983 984/** 985 * ipr_log_enhanced_cache_error - Log a cache error. 986 * @ioa_cfg: ioa config struct 987 * @hostrcb: hostrcb struct 988 * 989 * Return value: 990 * none 991 **/ 992static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg, 993 struct ipr_hostrcb *hostrcb) 994{ 995 struct ipr_hostrcb_type_12_error *error = 996 &hostrcb->hcam.u.error.u.type_12_error; 997 998 ipr_err("-----Current Configuration-----\n"); 999 ipr_err("Cache Directory Card Information:\n"); 1000 ipr_log_ext_vpd(&error->ioa_vpd); 1001 ipr_err("Adapter Card Information:\n"); 1002 ipr_log_ext_vpd(&error->cfc_vpd); 1003 1004 ipr_err("-----Expected Configuration-----\n"); 1005 ipr_err("Cache Directory Card Information:\n"); 1006 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd); 1007 ipr_err("Adapter Card Information:\n"); 1008 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd); 1009 1010 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1011 be32_to_cpu(error->ioa_data[0]), 1012 be32_to_cpu(error->ioa_data[1]), 1013 be32_to_cpu(error->ioa_data[2])); 1014} 1015 1016/** 1017 * ipr_log_cache_error - Log a cache error. 1018 * @ioa_cfg: ioa config struct 1019 * @hostrcb: hostrcb struct 1020 * 1021 * Return value: 1022 * none 1023 **/ 1024static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1025 struct ipr_hostrcb *hostrcb) 1026{ 1027 struct ipr_hostrcb_type_02_error *error = 1028 &hostrcb->hcam.u.error.u.type_02_error; 1029 1030 ipr_err("-----Current Configuration-----\n"); 1031 ipr_err("Cache Directory Card Information:\n"); 1032 ipr_log_vpd(&error->ioa_vpd); 1033 ipr_err("Adapter Card Information:\n"); 1034 ipr_log_vpd(&error->cfc_vpd); 1035 1036 ipr_err("-----Expected Configuration-----\n"); 1037 ipr_err("Cache Directory Card Information:\n"); 1038 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd); 1039 ipr_err("Adapter Card Information:\n"); 1040 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd); 1041 1042 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1043 be32_to_cpu(error->ioa_data[0]), 1044 be32_to_cpu(error->ioa_data[1]), 1045 be32_to_cpu(error->ioa_data[2])); 1046} 1047 1048/** 1049 * ipr_log_enhanced_config_error - Log a configuration error. 1050 * @ioa_cfg: ioa config struct 1051 * @hostrcb: hostrcb struct 1052 * 1053 * Return value: 1054 * none 1055 **/ 1056static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg, 1057 struct ipr_hostrcb *hostrcb) 1058{ 1059 int errors_logged, i; 1060 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry; 1061 struct ipr_hostrcb_type_13_error *error; 1062 1063 error = &hostrcb->hcam.u.error.u.type_13_error; 1064 errors_logged = be32_to_cpu(error->errors_logged); 1065 1066 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1067 be32_to_cpu(error->errors_detected), errors_logged); 1068 1069 dev_entry = error->dev; 1070 1071 for (i = 0; i < errors_logged; i++, dev_entry++) { 1072 ipr_err_separator; 1073 1074 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1075 ipr_log_ext_vpd(&dev_entry->vpd); 1076 1077 ipr_err("-----New Device Information-----\n"); 1078 ipr_log_ext_vpd(&dev_entry->new_vpd); 1079 1080 ipr_err("Cache Directory Card Information:\n"); 1081 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1082 1083 ipr_err("Adapter Card Information:\n"); 1084 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1085 } 1086} 1087 1088/** 1089 * ipr_log_config_error - Log a configuration error. 1090 * @ioa_cfg: ioa config struct 1091 * @hostrcb: hostrcb struct 1092 * 1093 * Return value: 1094 * none 1095 **/ 1096static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, 1097 struct ipr_hostrcb *hostrcb) 1098{ 1099 int errors_logged, i; 1100 struct ipr_hostrcb_device_data_entry *dev_entry; 1101 struct ipr_hostrcb_type_03_error *error; 1102 1103 error = &hostrcb->hcam.u.error.u.type_03_error; 1104 errors_logged = be32_to_cpu(error->errors_logged); 1105 1106 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1107 be32_to_cpu(error->errors_detected), errors_logged); 1108 1109 dev_entry = error->dev; 1110 1111 for (i = 0; i < errors_logged; i++, dev_entry++) { 1112 ipr_err_separator; 1113 1114 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1115 ipr_log_vpd(&dev_entry->vpd); 1116 1117 ipr_err("-----New Device Information-----\n"); 1118 ipr_log_vpd(&dev_entry->new_vpd); 1119 1120 ipr_err("Cache Directory Card Information:\n"); 1121 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd); 1122 1123 ipr_err("Adapter Card Information:\n"); 1124 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd); 1125 1126 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", 1127 be32_to_cpu(dev_entry->ioa_data[0]), 1128 be32_to_cpu(dev_entry->ioa_data[1]), 1129 be32_to_cpu(dev_entry->ioa_data[2]), 1130 be32_to_cpu(dev_entry->ioa_data[3]), 1131 be32_to_cpu(dev_entry->ioa_data[4])); 1132 } 1133} 1134 1135/** 1136 * ipr_log_enhanced_array_error - Log an array configuration error. 1137 * @ioa_cfg: ioa config struct 1138 * @hostrcb: hostrcb struct 1139 * 1140 * Return value: 1141 * none 1142 **/ 1143static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg, 1144 struct ipr_hostrcb *hostrcb) 1145{ 1146 int i, num_entries; 1147 struct ipr_hostrcb_type_14_error *error; 1148 struct ipr_hostrcb_array_data_entry_enhanced *array_entry; 1149 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1150 1151 error = &hostrcb->hcam.u.error.u.type_14_error; 1152 1153 ipr_err_separator; 1154 1155 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1156 error->protection_level, 1157 ioa_cfg->host->host_no, 1158 error->last_func_vset_res_addr.bus, 1159 error->last_func_vset_res_addr.target, 1160 error->last_func_vset_res_addr.lun); 1161 1162 ipr_err_separator; 1163 1164 array_entry = error->array_member; 1165 num_entries = min_t(u32, be32_to_cpu(error->num_entries), 1166 sizeof(error->array_member)); 1167 1168 for (i = 0; i < num_entries; i++, array_entry++) { 1169 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1170 continue; 1171 1172 if (be32_to_cpu(error->exposed_mode_adn) == i) 1173 ipr_err("Exposed Array Member %d:\n", i); 1174 else 1175 ipr_err("Array Member %d:\n", i); 1176 1177 ipr_log_ext_vpd(&array_entry->vpd); 1178 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1179 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1180 "Expected Location"); 1181 1182 ipr_err_separator; 1183 } 1184} 1185 1186/** 1187 * ipr_log_array_error - Log an array configuration error. 1188 * @ioa_cfg: ioa config struct 1189 * @hostrcb: hostrcb struct 1190 * 1191 * Return value: 1192 * none 1193 **/ 1194static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, 1195 struct ipr_hostrcb *hostrcb) 1196{ 1197 int i; 1198 struct ipr_hostrcb_type_04_error *error; 1199 struct ipr_hostrcb_array_data_entry *array_entry; 1200 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1201 1202 error = &hostrcb->hcam.u.error.u.type_04_error; 1203 1204 ipr_err_separator; 1205 1206 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1207 error->protection_level, 1208 ioa_cfg->host->host_no, 1209 error->last_func_vset_res_addr.bus, 1210 error->last_func_vset_res_addr.target, 1211 error->last_func_vset_res_addr.lun); 1212 1213 ipr_err_separator; 1214 1215 array_entry = error->array_member; 1216 1217 for (i = 0; i < 18; i++) { 1218 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1219 continue; 1220 1221 if (be32_to_cpu(error->exposed_mode_adn) == i) 1222 ipr_err("Exposed Array Member %d:\n", i); 1223 else 1224 ipr_err("Array Member %d:\n", i); 1225 1226 ipr_log_vpd(&array_entry->vpd); 1227 1228 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1229 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1230 "Expected Location"); 1231 1232 ipr_err_separator; 1233 1234 if (i == 9) 1235 array_entry = error->array_member2; 1236 else 1237 array_entry++; 1238 } 1239} 1240 1241/** 1242 * ipr_log_hex_data - Log additional hex IOA error data. 1243 * @ioa_cfg: ioa config struct 1244 * @data: IOA error data 1245 * @len: data length 1246 * 1247 * Return value: 1248 * none 1249 **/ 1250static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len) 1251{ 1252 int i; 1253 1254 if (len == 0) 1255 return; 1256 1257 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 1258 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP); 1259 1260 for (i = 0; i < len / 4; i += 4) { 1261 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 1262 be32_to_cpu(data[i]), 1263 be32_to_cpu(data[i+1]), 1264 be32_to_cpu(data[i+2]), 1265 be32_to_cpu(data[i+3])); 1266 } 1267} 1268 1269/** 1270 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error. 1271 * @ioa_cfg: ioa config struct 1272 * @hostrcb: hostrcb struct 1273 * 1274 * Return value: 1275 * none 1276 **/ 1277static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1278 struct ipr_hostrcb *hostrcb) 1279{ 1280 struct ipr_hostrcb_type_17_error *error; 1281 1282 error = &hostrcb->hcam.u.error.u.type_17_error; 1283 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1284 1285 ipr_err("%s\n", error->failure_reason); 1286 ipr_err("Remote Adapter VPD:\n"); 1287 ipr_log_ext_vpd(&error->vpd); 1288 ipr_log_hex_data(ioa_cfg, error->data, 1289 be32_to_cpu(hostrcb->hcam.length) - 1290 (offsetof(struct ipr_hostrcb_error, u) + 1291 offsetof(struct ipr_hostrcb_type_17_error, data))); 1292} 1293 1294/** 1295 * ipr_log_dual_ioa_error - Log a dual adapter error. 1296 * @ioa_cfg: ioa config struct 1297 * @hostrcb: hostrcb struct 1298 * 1299 * Return value: 1300 * none 1301 **/ 1302static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1303 struct ipr_hostrcb *hostrcb) 1304{ 1305 struct ipr_hostrcb_type_07_error *error; 1306 1307 error = &hostrcb->hcam.u.error.u.type_07_error; 1308 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1309 1310 ipr_err("%s\n", error->failure_reason); 1311 ipr_err("Remote Adapter VPD:\n"); 1312 ipr_log_vpd(&error->vpd); 1313 ipr_log_hex_data(ioa_cfg, error->data, 1314 be32_to_cpu(hostrcb->hcam.length) - 1315 (offsetof(struct ipr_hostrcb_error, u) + 1316 offsetof(struct ipr_hostrcb_type_07_error, data))); 1317} 1318 1319static const struct { 1320 u8 active; 1321 char *desc; 1322} path_active_desc[] = { 1323 { IPR_PATH_NO_INFO, "Path" }, 1324 { IPR_PATH_ACTIVE, "Active path" }, 1325 { IPR_PATH_NOT_ACTIVE, "Inactive path" } 1326}; 1327 1328static const struct { 1329 u8 state; 1330 char *desc; 1331} path_state_desc[] = { 1332 { IPR_PATH_STATE_NO_INFO, "has no path state information available" }, 1333 { IPR_PATH_HEALTHY, "is healthy" }, 1334 { IPR_PATH_DEGRADED, "is degraded" }, 1335 { IPR_PATH_FAILED, "is failed" } 1336}; 1337 1338/** 1339 * ipr_log_fabric_path - Log a fabric path error 1340 * @hostrcb: hostrcb struct 1341 * @fabric: fabric descriptor 1342 * 1343 * Return value: 1344 * none 1345 **/ 1346static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb, 1347 struct ipr_hostrcb_fabric_desc *fabric) 1348{ 1349 int i, j; 1350 u8 path_state = fabric->path_state; 1351 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 1352 u8 state = path_state & IPR_PATH_STATE_MASK; 1353 1354 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 1355 if (path_active_desc[i].active != active) 1356 continue; 1357 1358 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 1359 if (path_state_desc[j].state != state) 1360 continue; 1361 1362 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) { 1363 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n", 1364 path_active_desc[i].desc, path_state_desc[j].desc, 1365 fabric->ioa_port); 1366 } else if (fabric->cascaded_expander == 0xff) { 1367 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n", 1368 path_active_desc[i].desc, path_state_desc[j].desc, 1369 fabric->ioa_port, fabric->phy); 1370 } else if (fabric->phy == 0xff) { 1371 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n", 1372 path_active_desc[i].desc, path_state_desc[j].desc, 1373 fabric->ioa_port, fabric->cascaded_expander); 1374 } else { 1375 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n", 1376 path_active_desc[i].desc, path_state_desc[j].desc, 1377 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1378 } 1379 return; 1380 } 1381 } 1382 1383 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state, 1384 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1385} 1386 1387static const struct { 1388 u8 type; 1389 char *desc; 1390} path_type_desc[] = { 1391 { IPR_PATH_CFG_IOA_PORT, "IOA port" }, 1392 { IPR_PATH_CFG_EXP_PORT, "Expander port" }, 1393 { IPR_PATH_CFG_DEVICE_PORT, "Device port" }, 1394 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" } 1395}; 1396 1397static const struct { 1398 u8 status; 1399 char *desc; 1400} path_status_desc[] = { 1401 { IPR_PATH_CFG_NO_PROB, "Functional" }, 1402 { IPR_PATH_CFG_DEGRADED, "Degraded" }, 1403 { IPR_PATH_CFG_FAILED, "Failed" }, 1404 { IPR_PATH_CFG_SUSPECT, "Suspect" }, 1405 { IPR_PATH_NOT_DETECTED, "Missing" }, 1406 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" } 1407}; 1408 1409static const char *link_rate[] = { 1410 "unknown", 1411 "disabled", 1412 "phy reset problem", 1413 "spinup hold", 1414 "port selector", 1415 "unknown", 1416 "unknown", 1417 "unknown", 1418 "1.5Gbps", 1419 "3.0Gbps", 1420 "unknown", 1421 "unknown", 1422 "unknown", 1423 "unknown", 1424 "unknown", 1425 "unknown" 1426}; 1427 1428/** 1429 * ipr_log_path_elem - Log a fabric path element. 1430 * @hostrcb: hostrcb struct 1431 * @cfg: fabric path element struct 1432 * 1433 * Return value: 1434 * none 1435 **/ 1436static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb, 1437 struct ipr_hostrcb_config_element *cfg) 1438{ 1439 int i, j; 1440 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 1441 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 1442 1443 if (type == IPR_PATH_CFG_NOT_EXIST) 1444 return; 1445 1446 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 1447 if (path_type_desc[i].type != type) 1448 continue; 1449 1450 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 1451 if (path_status_desc[j].status != status) 1452 continue; 1453 1454 if (type == IPR_PATH_CFG_IOA_PORT) { 1455 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n", 1456 path_status_desc[j].desc, path_type_desc[i].desc, 1457 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1458 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1459 } else { 1460 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) { 1461 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n", 1462 path_status_desc[j].desc, path_type_desc[i].desc, 1463 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1464 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1465 } else if (cfg->cascaded_expander == 0xff) { 1466 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, " 1467 "WWN=%08X%08X\n", path_status_desc[j].desc, 1468 path_type_desc[i].desc, cfg->phy, 1469 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1470 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1471 } else if (cfg->phy == 0xff) { 1472 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, " 1473 "WWN=%08X%08X\n", path_status_desc[j].desc, 1474 path_type_desc[i].desc, cfg->cascaded_expander, 1475 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1476 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1477 } else { 1478 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s " 1479 "WWN=%08X%08X\n", path_status_desc[j].desc, 1480 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy, 1481 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1482 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1483 } 1484 } 1485 return; 1486 } 1487 } 1488 1489 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s " 1490 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy, 1491 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1492 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1493} 1494 1495/** 1496 * ipr_log_fabric_error - Log a fabric error. 1497 * @ioa_cfg: ioa config struct 1498 * @hostrcb: hostrcb struct 1499 * 1500 * Return value: 1501 * none 1502 **/ 1503static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 1504 struct ipr_hostrcb *hostrcb) 1505{ 1506 struct ipr_hostrcb_type_20_error *error; 1507 struct ipr_hostrcb_fabric_desc *fabric; 1508 struct ipr_hostrcb_config_element *cfg; 1509 int i, add_len; 1510 1511 error = &hostrcb->hcam.u.error.u.type_20_error; 1512 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1513 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 1514 1515 add_len = be32_to_cpu(hostrcb->hcam.length) - 1516 (offsetof(struct ipr_hostrcb_error, u) + 1517 offsetof(struct ipr_hostrcb_type_20_error, desc)); 1518 1519 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 1520 ipr_log_fabric_path(hostrcb, fabric); 1521 for_each_fabric_cfg(fabric, cfg) 1522 ipr_log_path_elem(hostrcb, cfg); 1523 1524 add_len -= be16_to_cpu(fabric->length); 1525 fabric = (struct ipr_hostrcb_fabric_desc *) 1526 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 1527 } 1528 1529 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len); 1530} 1531 1532/** 1533 * ipr_log_generic_error - Log an adapter error. 1534 * @ioa_cfg: ioa config struct 1535 * @hostrcb: hostrcb struct 1536 * 1537 * Return value: 1538 * none 1539 **/ 1540static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, 1541 struct ipr_hostrcb *hostrcb) 1542{ 1543 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data, 1544 be32_to_cpu(hostrcb->hcam.length)); 1545} 1546 1547/** 1548 * ipr_get_error - Find the specfied IOASC in the ipr_error_table. 1549 * @ioasc: IOASC 1550 * 1551 * This function will return the index of into the ipr_error_table 1552 * for the specified IOASC. If the IOASC is not in the table, 1553 * 0 will be returned, which points to the entry used for unknown errors. 1554 * 1555 * Return value: 1556 * index into the ipr_error_table 1557 **/ 1558static u32 ipr_get_error(u32 ioasc) 1559{ 1560 int i; 1561 1562 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) 1563 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK)) 1564 return i; 1565 1566 return 0; 1567} 1568 1569/** 1570 * ipr_handle_log_data - Log an adapter error. 1571 * @ioa_cfg: ioa config struct 1572 * @hostrcb: hostrcb struct 1573 * 1574 * This function logs an adapter error to the system. 1575 * 1576 * Return value: 1577 * none 1578 **/ 1579static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 1580 struct ipr_hostrcb *hostrcb) 1581{ 1582 u32 ioasc; 1583 int error_index; 1584 1585 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) 1586 return; 1587 1588 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) 1589 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); 1590 1591 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc); 1592 1593 if (ioasc == IPR_IOASC_BUS_WAS_RESET || 1594 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) { 1595 /* Tell the midlayer we had a bus reset so it will handle the UA properly */ 1596 scsi_report_bus_reset(ioa_cfg->host, 1597 hostrcb->hcam.u.error.failing_dev_res_addr.bus); 1598 } 1599 1600 error_index = ipr_get_error(ioasc); 1601 1602 if (!ipr_error_table[error_index].log_hcam) 1603 return; 1604 1605 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error); 1606 1607 /* Set indication we have logged an error */ 1608 ioa_cfg->errors_logged++; 1609 1610 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 1611 return; 1612 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw)) 1613 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw)); 1614 1615 switch (hostrcb->hcam.overlay_id) { 1616 case IPR_HOST_RCB_OVERLAY_ID_2: 1617 ipr_log_cache_error(ioa_cfg, hostrcb); 1618 break; 1619 case IPR_HOST_RCB_OVERLAY_ID_3: 1620 ipr_log_config_error(ioa_cfg, hostrcb); 1621 break; 1622 case IPR_HOST_RCB_OVERLAY_ID_4: 1623 case IPR_HOST_RCB_OVERLAY_ID_6: 1624 ipr_log_array_error(ioa_cfg, hostrcb); 1625 break; 1626 case IPR_HOST_RCB_OVERLAY_ID_7: 1627 ipr_log_dual_ioa_error(ioa_cfg, hostrcb); 1628 break; 1629 case IPR_HOST_RCB_OVERLAY_ID_12: 1630 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb); 1631 break; 1632 case IPR_HOST_RCB_OVERLAY_ID_13: 1633 ipr_log_enhanced_config_error(ioa_cfg, hostrcb); 1634 break; 1635 case IPR_HOST_RCB_OVERLAY_ID_14: 1636 case IPR_HOST_RCB_OVERLAY_ID_16: 1637 ipr_log_enhanced_array_error(ioa_cfg, hostrcb); 1638 break; 1639 case IPR_HOST_RCB_OVERLAY_ID_17: 1640 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb); 1641 break; 1642 case IPR_HOST_RCB_OVERLAY_ID_20: 1643 ipr_log_fabric_error(ioa_cfg, hostrcb); 1644 break; 1645 case IPR_HOST_RCB_OVERLAY_ID_1: 1646 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: 1647 default: 1648 ipr_log_generic_error(ioa_cfg, hostrcb); 1649 break; 1650 } 1651} 1652 1653/** 1654 * ipr_process_error - Op done function for an adapter error log. 1655 * @ipr_cmd: ipr command struct 1656 * 1657 * This function is the op done function for an error log host 1658 * controlled async from the adapter. It will log the error and 1659 * send the HCAM back to the adapter. 1660 * 1661 * Return value: 1662 * none 1663 **/ 1664static void ipr_process_error(struct ipr_cmnd *ipr_cmd) 1665{ 1666 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1667 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 1668 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 1669 1670 list_del(&hostrcb->queue); 1671 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 1672 1673 if (!ioasc) { 1674 ipr_handle_log_data(ioa_cfg, hostrcb); 1675 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) { 1676 dev_err(&ioa_cfg->pdev->dev, 1677 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 1678 } 1679 1680 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 1681} 1682 1683/** 1684 * ipr_timeout - An internally generated op has timed out. 1685 * @ipr_cmd: ipr command struct 1686 * 1687 * This function blocks host requests and initiates an 1688 * adapter reset. 1689 * 1690 * Return value: 1691 * none 1692 **/ 1693static void ipr_timeout(struct ipr_cmnd *ipr_cmd) 1694{ 1695 unsigned long lock_flags = 0; 1696 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1697 1698 ENTER; 1699 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1700 1701 ioa_cfg->errors_logged++; 1702 dev_err(&ioa_cfg->pdev->dev, 1703 "Adapter being reset due to command timeout.\n"); 1704 1705 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 1706 ioa_cfg->sdt_state = GET_DUMP; 1707 1708 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) 1709 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 1710 1711 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1712 LEAVE; 1713} 1714 1715/** 1716 * ipr_oper_timeout - Adapter timed out transitioning to operational 1717 * @ipr_cmd: ipr command struct 1718 * 1719 * This function blocks host requests and initiates an 1720 * adapter reset. 1721 * 1722 * Return value: 1723 * none 1724 **/ 1725static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) 1726{ 1727 unsigned long lock_flags = 0; 1728 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1729 1730 ENTER; 1731 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1732 1733 ioa_cfg->errors_logged++; 1734 dev_err(&ioa_cfg->pdev->dev, 1735 "Adapter timed out transitioning to operational.\n"); 1736 1737 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 1738 ioa_cfg->sdt_state = GET_DUMP; 1739 1740 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { 1741 if (ipr_fastfail) 1742 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 1743 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 1744 } 1745 1746 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1747 LEAVE; 1748} 1749 1750/** 1751 * ipr_reset_reload - Reset/Reload the IOA 1752 * @ioa_cfg: ioa config struct 1753 * @shutdown_type: shutdown type 1754 * 1755 * This function resets the adapter and re-initializes it. 1756 * This function assumes that all new host commands have been stopped. 1757 * Return value: 1758 * SUCCESS / FAILED 1759 **/ 1760static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg, 1761 enum ipr_shutdown_type shutdown_type) 1762{ 1763 if (!ioa_cfg->in_reset_reload) 1764 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 1765 1766 spin_unlock_irq(ioa_cfg->host->host_lock); 1767 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 1768 spin_lock_irq(ioa_cfg->host->host_lock); 1769 1770 /* If we got hit with a host reset while we were already resetting 1771 the adapter for some reason, and the reset failed. */ 1772 if (ioa_cfg->ioa_is_dead) { 1773 ipr_trace; 1774 return FAILED; 1775 } 1776 1777 return SUCCESS; 1778} 1779 1780/** 1781 * ipr_find_ses_entry - Find matching SES in SES table 1782 * @res: resource entry struct of SES 1783 * 1784 * Return value: 1785 * pointer to SES table entry / NULL on failure 1786 **/ 1787static const struct ipr_ses_table_entry * 1788ipr_find_ses_entry(struct ipr_resource_entry *res) 1789{ 1790 int i, j, matches; 1791 const struct ipr_ses_table_entry *ste = ipr_ses_table; 1792 1793 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { 1794 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { 1795 if (ste->compare_product_id_byte[j] == 'X') { 1796 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j]) 1797 matches++; 1798 else 1799 break; 1800 } else 1801 matches++; 1802 } 1803 1804 if (matches == IPR_PROD_ID_LEN) 1805 return ste; 1806 } 1807 1808 return NULL; 1809} 1810 1811/** 1812 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus 1813 * @ioa_cfg: ioa config struct 1814 * @bus: SCSI bus 1815 * @bus_width: bus width 1816 * 1817 * Return value: 1818 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz 1819 * For a 2-byte wide SCSI bus, the maximum transfer speed is 1820 * twice the maximum transfer rate (e.g. for a wide enabled bus, 1821 * max 160MHz = max 320MB/sec). 1822 **/ 1823static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) 1824{ 1825 struct ipr_resource_entry *res; 1826 const struct ipr_ses_table_entry *ste; 1827 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); 1828 1829 /* Loop through each config table entry in the config table buffer */ 1830 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1831 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data))) 1832 continue; 1833 1834 if (bus != res->cfgte.res_addr.bus) 1835 continue; 1836 1837 if (!(ste = ipr_find_ses_entry(res))) 1838 continue; 1839 1840 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); 1841 } 1842 1843 return max_xfer_rate; 1844} 1845 1846/** 1847 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA 1848 * @ioa_cfg: ioa config struct 1849 * @max_delay: max delay in micro-seconds to wait 1850 * 1851 * Waits for an IODEBUG ACK from the IOA, doing busy looping. 1852 * 1853 * Return value: 1854 * 0 on success / other on failure 1855 **/ 1856static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) 1857{ 1858 volatile u32 pcii_reg; 1859 int delay = 1; 1860 1861 /* Read interrupt reg until IOA signals IO Debug Acknowledge */ 1862 while (delay < max_delay) { 1863 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 1864 1865 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) 1866 return 0; 1867 1868 /* udelay cannot be used if delay is more than a few milliseconds */ 1869 if ((delay / 1000) > MAX_UDELAY_MS) 1870 mdelay(delay / 1000); 1871 else 1872 udelay(delay); 1873 1874 delay += delay; 1875 } 1876 return -EIO; 1877} 1878 1879/** 1880 * ipr_get_ldump_data_section - Dump IOA memory 1881 * @ioa_cfg: ioa config struct 1882 * @start_addr: adapter address to dump 1883 * @dest: destination kernel buffer 1884 * @length_in_words: length to dump in 4 byte words 1885 * 1886 * Return value: 1887 * 0 on success / -EIO on failure 1888 **/ 1889static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, 1890 u32 start_addr, 1891 __be32 *dest, u32 length_in_words) 1892{ 1893 volatile u32 temp_pcii_reg; 1894 int i, delay = 0; 1895 1896 /* Write IOA interrupt reg starting LDUMP state */ 1897 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), 1898 ioa_cfg->regs.set_uproc_interrupt_reg); 1899 1900 /* Wait for IO debug acknowledge */ 1901 if (ipr_wait_iodbg_ack(ioa_cfg, 1902 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { 1903 dev_err(&ioa_cfg->pdev->dev, 1904 "IOA dump long data transfer timeout\n"); 1905 return -EIO; 1906 } 1907 1908 /* Signal LDUMP interlocked - clear IO debug ack */ 1909 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1910 ioa_cfg->regs.clr_interrupt_reg); 1911 1912 /* Write Mailbox with starting address */ 1913 writel(start_addr, ioa_cfg->ioa_mailbox); 1914 1915 /* Signal address valid - clear IOA Reset alert */ 1916 writel(IPR_UPROCI_RESET_ALERT, 1917 ioa_cfg->regs.clr_uproc_interrupt_reg); 1918 1919 for (i = 0; i < length_in_words; i++) { 1920 /* Wait for IO debug acknowledge */ 1921 if (ipr_wait_iodbg_ack(ioa_cfg, 1922 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { 1923 dev_err(&ioa_cfg->pdev->dev, 1924 "IOA dump short data transfer timeout\n"); 1925 return -EIO; 1926 } 1927 1928 /* Read data from mailbox and increment destination pointer */ 1929 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); 1930 dest++; 1931 1932 /* For all but the last word of data, signal data received */ 1933 if (i < (length_in_words - 1)) { 1934 /* Signal dump data received - Clear IO debug Ack */ 1935 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1936 ioa_cfg->regs.clr_interrupt_reg); 1937 } 1938 } 1939 1940 /* Signal end of block transfer. Set reset alert then clear IO debug ack */ 1941 writel(IPR_UPROCI_RESET_ALERT, 1942 ioa_cfg->regs.set_uproc_interrupt_reg); 1943 1944 writel(IPR_UPROCI_IO_DEBUG_ALERT, 1945 ioa_cfg->regs.clr_uproc_interrupt_reg); 1946 1947 /* Signal dump data received - Clear IO debug Ack */ 1948 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1949 ioa_cfg->regs.clr_interrupt_reg); 1950 1951 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ 1952 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { 1953 temp_pcii_reg = 1954 readl(ioa_cfg->regs.sense_uproc_interrupt_reg); 1955 1956 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) 1957 return 0; 1958 1959 udelay(10); 1960 delay += 10; 1961 } 1962 1963 return 0; 1964} 1965 1966#ifdef CONFIG_SCSI_IPR_DUMP 1967/** 1968 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer 1969 * @ioa_cfg: ioa config struct 1970 * @pci_address: adapter address 1971 * @length: length of data to copy 1972 * 1973 * Copy data from PCI adapter to kernel buffer. 1974 * Note: length MUST be a 4 byte multiple 1975 * Return value: 1976 * 0 on success / other on failure 1977 **/ 1978static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, 1979 unsigned long pci_address, u32 length) 1980{ 1981 int bytes_copied = 0; 1982 int cur_len, rc, rem_len, rem_page_len; 1983 __be32 *page; 1984 unsigned long lock_flags = 0; 1985 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; 1986 1987 while (bytes_copied < length && 1988 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) { 1989 if (ioa_dump->page_offset >= PAGE_SIZE || 1990 ioa_dump->page_offset == 0) { 1991 page = (__be32 *)__get_free_page(GFP_ATOMIC); 1992 1993 if (!page) { 1994 ipr_trace; 1995 return bytes_copied; 1996 } 1997 1998 ioa_dump->page_offset = 0; 1999 ioa_dump->ioa_data[ioa_dump->next_page_index] = page; 2000 ioa_dump->next_page_index++; 2001 } else 2002 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; 2003 2004 rem_len = length - bytes_copied; 2005 rem_page_len = PAGE_SIZE - ioa_dump->page_offset; 2006 cur_len = min(rem_len, rem_page_len); 2007 2008 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2009 if (ioa_cfg->sdt_state == ABORT_DUMP) { 2010 rc = -EIO; 2011 } else { 2012 rc = ipr_get_ldump_data_section(ioa_cfg, 2013 pci_address + bytes_copied, 2014 &page[ioa_dump->page_offset / 4], 2015 (cur_len / sizeof(u32))); 2016 } 2017 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2018 2019 if (!rc) { 2020 ioa_dump->page_offset += cur_len; 2021 bytes_copied += cur_len; 2022 } else { 2023 ipr_trace; 2024 break; 2025 } 2026 schedule(); 2027 } 2028 2029 return bytes_copied; 2030} 2031 2032/** 2033 * ipr_init_dump_entry_hdr - Initialize a dump entry header. 2034 * @hdr: dump entry header struct 2035 * 2036 * Return value: 2037 * nothing 2038 **/ 2039static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) 2040{ 2041 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; 2042 hdr->num_elems = 1; 2043 hdr->offset = sizeof(*hdr); 2044 hdr->status = IPR_DUMP_STATUS_SUCCESS; 2045} 2046 2047/** 2048 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. 2049 * @ioa_cfg: ioa config struct 2050 * @driver_dump: driver dump struct 2051 * 2052 * Return value: 2053 * nothing 2054 **/ 2055static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, 2056 struct ipr_driver_dump *driver_dump) 2057{ 2058 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2059 2060 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); 2061 driver_dump->ioa_type_entry.hdr.len = 2062 sizeof(struct ipr_dump_ioa_type_entry) - 2063 sizeof(struct ipr_dump_entry_header); 2064 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2065 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; 2066 driver_dump->ioa_type_entry.type = ioa_cfg->type; 2067 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | 2068 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | 2069 ucode_vpd->minor_release[1]; 2070 driver_dump->hdr.num_entries++; 2071} 2072 2073/** 2074 * ipr_dump_version_data - Fill in the driver version in the dump. 2075 * @ioa_cfg: ioa config struct 2076 * @driver_dump: driver dump struct 2077 * 2078 * Return value: 2079 * nothing 2080 **/ 2081static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, 2082 struct ipr_driver_dump *driver_dump) 2083{ 2084 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); 2085 driver_dump->version_entry.hdr.len = 2086 sizeof(struct ipr_dump_version_entry) - 2087 sizeof(struct ipr_dump_entry_header); 2088 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2089 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; 2090 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); 2091 driver_dump->hdr.num_entries++; 2092} 2093 2094/** 2095 * ipr_dump_trace_data - Fill in the IOA trace in the dump. 2096 * @ioa_cfg: ioa config struct 2097 * @driver_dump: driver dump struct 2098 * 2099 * Return value: 2100 * nothing 2101 **/ 2102static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, 2103 struct ipr_driver_dump *driver_dump) 2104{ 2105 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); 2106 driver_dump->trace_entry.hdr.len = 2107 sizeof(struct ipr_dump_trace_entry) - 2108 sizeof(struct ipr_dump_entry_header); 2109 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2110 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; 2111 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); 2112 driver_dump->hdr.num_entries++; 2113} 2114 2115/** 2116 * ipr_dump_location_data - Fill in the IOA location in the dump. 2117 * @ioa_cfg: ioa config struct 2118 * @driver_dump: driver dump struct 2119 * 2120 * Return value: 2121 * nothing 2122 **/ 2123static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, 2124 struct ipr_driver_dump *driver_dump) 2125{ 2126 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); 2127 driver_dump->location_entry.hdr.len = 2128 sizeof(struct ipr_dump_location_entry) - 2129 sizeof(struct ipr_dump_entry_header); 2130 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2131 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; 2132 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id); 2133 driver_dump->hdr.num_entries++; 2134} 2135 2136/** 2137 * ipr_get_ioa_dump - Perform a dump of the driver and adapter. 2138 * @ioa_cfg: ioa config struct 2139 * @dump: dump struct 2140 * 2141 * Return value: 2142 * nothing 2143 **/ 2144static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) 2145{ 2146 unsigned long start_addr, sdt_word; 2147 unsigned long lock_flags = 0; 2148 struct ipr_driver_dump *driver_dump = &dump->driver_dump; 2149 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; 2150 u32 num_entries, start_off, end_off; 2151 u32 bytes_to_copy, bytes_copied, rc; 2152 struct ipr_sdt *sdt; 2153 int i; 2154 2155 ENTER; 2156 2157 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2158 2159 if (ioa_cfg->sdt_state != GET_DUMP) { 2160 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2161 return; 2162 } 2163 2164 start_addr = readl(ioa_cfg->ioa_mailbox); 2165 2166 if (!ipr_sdt_is_fmt2(start_addr)) { 2167 dev_err(&ioa_cfg->pdev->dev, 2168 "Invalid dump table format: %lx\n", start_addr); 2169 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2170 return; 2171 } 2172 2173 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); 2174 2175 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; 2176 2177 /* Initialize the overall dump header */ 2178 driver_dump->hdr.len = sizeof(struct ipr_driver_dump); 2179 driver_dump->hdr.num_entries = 1; 2180 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); 2181 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; 2182 driver_dump->hdr.os = IPR_DUMP_OS_LINUX; 2183 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; 2184 2185 ipr_dump_version_data(ioa_cfg, driver_dump); 2186 ipr_dump_location_data(ioa_cfg, driver_dump); 2187 ipr_dump_ioa_type_data(ioa_cfg, driver_dump); 2188 ipr_dump_trace_data(ioa_cfg, driver_dump); 2189 2190 /* Update dump_header */ 2191 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); 2192 2193 /* IOA Dump entry */ 2194 ipr_init_dump_entry_hdr(&ioa_dump->hdr); 2195 ioa_dump->format = IPR_SDT_FMT2; 2196 ioa_dump->hdr.len = 0; 2197 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2198 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; 2199 2200 /* First entries in sdt are actually a list of dump addresses and 2201 lengths to gather the real dump data. sdt represents the pointer 2202 to the ioa generated dump table. Dump data will be extracted based 2203 on entries in this table */ 2204 sdt = &ioa_dump->sdt; 2205 2206 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, 2207 sizeof(struct ipr_sdt) / sizeof(__be32)); 2208 2209 /* Smart Dump table is ready to use and the first entry is valid */ 2210 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) { 2211 dev_err(&ioa_cfg->pdev->dev, 2212 "Dump of IOA failed. Dump table not valid: %d, %X.\n", 2213 rc, be32_to_cpu(sdt->hdr.state)); 2214 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; 2215 ioa_cfg->sdt_state = DUMP_OBTAINED; 2216 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2217 return; 2218 } 2219 2220 num_entries = be32_to_cpu(sdt->hdr.num_entries_used); 2221 2222 if (num_entries > IPR_NUM_SDT_ENTRIES) 2223 num_entries = IPR_NUM_SDT_ENTRIES; 2224 2225 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2226 2227 for (i = 0; i < num_entries; i++) { 2228 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) { 2229 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 2230 break; 2231 } 2232 2233 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { 2234 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset); 2235 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; 2236 end_off = be32_to_cpu(sdt->entry[i].end_offset); 2237 2238 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) { 2239 bytes_to_copy = end_off - start_off; 2240 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) { 2241 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; 2242 continue; 2243 } 2244 2245 /* Copy data from adapter to driver buffers */ 2246 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, 2247 bytes_to_copy); 2248 2249 ioa_dump->hdr.len += bytes_copied; 2250 2251 if (bytes_copied != bytes_to_copy) { 2252 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 2253 break; 2254 } 2255 } 2256 } 2257 } 2258 2259 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); 2260 2261 /* Update dump_header */ 2262 driver_dump->hdr.len += ioa_dump->hdr.len; 2263 wmb(); 2264 ioa_cfg->sdt_state = DUMP_OBTAINED; 2265 LEAVE; 2266} 2267 2268#else 2269#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0) 2270#endif 2271 2272/** 2273 * ipr_release_dump - Free adapter dump memory 2274 * @kref: kref struct 2275 * 2276 * Return value: 2277 * nothing 2278 **/ 2279static void ipr_release_dump(struct kref *kref) 2280{ 2281 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref); 2282 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; 2283 unsigned long lock_flags = 0; 2284 int i; 2285 2286 ENTER; 2287 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2288 ioa_cfg->dump = NULL; 2289 ioa_cfg->sdt_state = INACTIVE; 2290 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2291 2292 for (i = 0; i < dump->ioa_dump.next_page_index; i++) 2293 free_page((unsigned long) dump->ioa_dump.ioa_data[i]); 2294 2295 kfree(dump); 2296 LEAVE; 2297} 2298 2299/** 2300 * ipr_worker_thread - Worker thread 2301 * @work: ioa config struct 2302 * 2303 * Called at task level from a work thread. This function takes care 2304 * of adding and removing device from the mid-layer as configuration 2305 * changes are detected by the adapter. 2306 * 2307 * Return value: 2308 * nothing 2309 **/ 2310static void ipr_worker_thread(struct work_struct *work) 2311{ 2312 unsigned long lock_flags; 2313 struct ipr_resource_entry *res; 2314 struct scsi_device *sdev; 2315 struct ipr_dump *dump; 2316 struct ipr_ioa_cfg *ioa_cfg = 2317 container_of(work, struct ipr_ioa_cfg, work_q); 2318 u8 bus, target, lun; 2319 int did_work; 2320 2321 ENTER; 2322 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2323 2324 if (ioa_cfg->sdt_state == GET_DUMP) { 2325 dump = ioa_cfg->dump; 2326 if (!dump) { 2327 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2328 return; 2329 } 2330 kref_get(&dump->kref); 2331 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2332 ipr_get_ioa_dump(ioa_cfg, dump); 2333 kref_put(&dump->kref, ipr_release_dump); 2334 2335 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2336 if (ioa_cfg->sdt_state == DUMP_OBTAINED) 2337 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2338 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2339 return; 2340 } 2341 2342restart: 2343 do { 2344 did_work = 0; 2345 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) { 2346 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2347 return; 2348 } 2349 2350 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2351 if (res->del_from_ml && res->sdev) { 2352 did_work = 1; 2353 sdev = res->sdev; 2354 if (!scsi_device_get(sdev)) { 2355 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 2356 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2357 scsi_remove_device(sdev); 2358 scsi_device_put(sdev); 2359 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2360 } 2361 break; 2362 } 2363 } 2364 } while(did_work); 2365 2366 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2367 if (res->add_to_ml) { 2368 bus = res->cfgte.res_addr.bus; 2369 target = res->cfgte.res_addr.target; 2370 lun = res->cfgte.res_addr.lun; 2371 res->add_to_ml = 0; 2372 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2373 scsi_add_device(ioa_cfg->host, bus, target, lun); 2374 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2375 goto restart; 2376 } 2377 } 2378 2379 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2380 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE); 2381 LEAVE; 2382} 2383 2384#ifdef CONFIG_SCSI_IPR_TRACE 2385/** 2386 * ipr_read_trace - Dump the adapter trace 2387 * @kobj: kobject struct 2388 * @buf: buffer 2389 * @off: offset 2390 * @count: buffer size 2391 * 2392 * Return value: 2393 * number of bytes printed to buffer 2394 **/ 2395static ssize_t ipr_read_trace(struct kobject *kobj, char *buf, 2396 loff_t off, size_t count) 2397{ 2398 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 2399 struct Scsi_Host *shost = class_to_shost(cdev); 2400 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2401 unsigned long lock_flags = 0; 2402 int size = IPR_TRACE_SIZE; 2403 char *src = (char *)ioa_cfg->trace; 2404 2405 if (off > size) 2406 return 0; 2407 if (off + count > size) { 2408 size -= off; 2409 count = size; 2410 } 2411 2412 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2413 memcpy(buf, &src[off], count); 2414 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2415 return count; 2416} 2417 2418static struct bin_attribute ipr_trace_attr = { 2419 .attr = { 2420 .name = "trace", 2421 .mode = S_IRUGO, 2422 }, 2423 .size = 0, 2424 .read = ipr_read_trace, 2425}; 2426#endif 2427 2428static const struct { 2429 enum ipr_cache_state state; 2430 char *name; 2431} cache_state [] = { 2432 { CACHE_NONE, "none" }, 2433 { CACHE_DISABLED, "disabled" }, 2434 { CACHE_ENABLED, "enabled" } 2435}; 2436 2437/** 2438 * ipr_show_write_caching - Show the write caching attribute 2439 * @class_dev: class device struct 2440 * @buf: buffer 2441 * 2442 * Return value: 2443 * number of bytes printed to buffer 2444 **/ 2445static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf) 2446{ 2447 struct Scsi_Host *shost = class_to_shost(class_dev); 2448 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2449 unsigned long lock_flags = 0; 2450 int i, len = 0; 2451 2452 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2453 for (i = 0; i < ARRAY_SIZE(cache_state); i++) { 2454 if (cache_state[i].state == ioa_cfg->cache_state) { 2455 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name); 2456 break; 2457 } 2458 } 2459 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2460 return len; 2461} 2462 2463 2464/** 2465 * ipr_store_write_caching - Enable/disable adapter write cache 2466 * @class_dev: class_device struct 2467 * @buf: buffer 2468 * @count: buffer size 2469 * 2470 * This function will enable/disable adapter write cache. 2471 * 2472 * Return value: 2473 * count on success / other on failure 2474 **/ 2475static ssize_t ipr_store_write_caching(struct class_device *class_dev, 2476 const char *buf, size_t count) 2477{ 2478 struct Scsi_Host *shost = class_to_shost(class_dev); 2479 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2480 unsigned long lock_flags = 0; 2481 enum ipr_cache_state new_state = CACHE_INVALID; 2482 int i; 2483 2484 if (!capable(CAP_SYS_ADMIN)) 2485 return -EACCES; 2486 if (ioa_cfg->cache_state == CACHE_NONE) 2487 return -EINVAL; 2488 2489 for (i = 0; i < ARRAY_SIZE(cache_state); i++) { 2490 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) { 2491 new_state = cache_state[i].state; 2492 break; 2493 } 2494 } 2495 2496 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED) 2497 return -EINVAL; 2498 2499 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2500 if (ioa_cfg->cache_state == new_state) { 2501 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2502 return count; 2503 } 2504 2505 ioa_cfg->cache_state = new_state; 2506 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n", 2507 new_state == CACHE_ENABLED ? "Enabling" : "Disabling"); 2508 if (!ioa_cfg->in_reset_reload) 2509 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2510 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2511 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2512 2513 return count; 2514} 2515 2516static struct class_device_attribute ipr_ioa_cache_attr = { 2517 .attr = { 2518 .name = "write_cache", 2519 .mode = S_IRUGO | S_IWUSR, 2520 }, 2521 .show = ipr_show_write_caching, 2522 .store = ipr_store_write_caching 2523}; 2524 2525/** 2526 * ipr_show_fw_version - Show the firmware version 2527 * @class_dev: class device struct 2528 * @buf: buffer 2529 * 2530 * Return value: 2531 * number of bytes printed to buffer 2532 **/ 2533static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf) 2534{ 2535 struct Scsi_Host *shost = class_to_shost(class_dev); 2536 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2537 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2538 unsigned long lock_flags = 0; 2539 int len; 2540 2541 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2542 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 2543 ucode_vpd->major_release, ucode_vpd->card_type, 2544 ucode_vpd->minor_release[0], 2545 ucode_vpd->minor_release[1]); 2546 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2547 return len; 2548} 2549 2550static struct class_device_attribute ipr_fw_version_attr = { 2551 .attr = { 2552 .name = "fw_version", 2553 .mode = S_IRUGO, 2554 }, 2555 .show = ipr_show_fw_version, 2556}; 2557 2558/** 2559 * ipr_show_log_level - Show the adapter's error logging level 2560 * @class_dev: class device struct 2561 * @buf: buffer 2562 * 2563 * Return value: 2564 * number of bytes printed to buffer 2565 **/ 2566static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf) 2567{ 2568 struct Scsi_Host *shost = class_to_shost(class_dev); 2569 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2570 unsigned long lock_flags = 0; 2571 int len; 2572 2573 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2574 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 2575 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2576 return len; 2577} 2578 2579/** 2580 * ipr_store_log_level - Change the adapter's error logging level 2581 * @class_dev: class device struct 2582 * @buf: buffer 2583 * 2584 * Return value: 2585 * number of bytes printed to buffer 2586 **/ 2587static ssize_t ipr_store_log_level(struct class_device *class_dev, 2588 const char *buf, size_t count) 2589{ 2590 struct Scsi_Host *shost = class_to_shost(class_dev); 2591 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2592 unsigned long lock_flags = 0; 2593 2594 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2595 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 2596 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2597 return strlen(buf); 2598} 2599 2600static struct class_device_attribute ipr_log_level_attr = { 2601 .attr = { 2602 .name = "log_level", 2603 .mode = S_IRUGO | S_IWUSR, 2604 }, 2605 .show = ipr_show_log_level, 2606 .store = ipr_store_log_level 2607}; 2608 2609/** 2610 * ipr_store_diagnostics - IOA Diagnostics interface 2611 * @class_dev: class_device struct 2612 * @buf: buffer 2613 * @count: buffer size 2614 * 2615 * This function will reset the adapter and wait a reasonable 2616 * amount of time for any errors that the adapter might log. 2617 * 2618 * Return value: 2619 * count on success / other on failure 2620 **/ 2621static ssize_t ipr_store_diagnostics(struct class_device *class_dev, 2622 const char *buf, size_t count) 2623{ 2624 struct Scsi_Host *shost = class_to_shost(class_dev); 2625 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2626 unsigned long lock_flags = 0; 2627 int rc = count; 2628 2629 if (!capable(CAP_SYS_ADMIN)) 2630 return -EACCES; 2631 2632 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2633 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2634 ioa_cfg->errors_logged = 0; 2635 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2636 2637 if (ioa_cfg->in_reset_reload) { 2638 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2639 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2640 2641 /* Wait for a second for any errors to be logged */ 2642 msleep(1000); 2643 } else { 2644 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2645 return -EIO; 2646 } 2647 2648 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2649 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 2650 rc = -EIO; 2651 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2652 2653 return rc; 2654} 2655 2656static struct class_device_attribute ipr_diagnostics_attr = { 2657 .attr = { 2658 .name = "run_diagnostics", 2659 .mode = S_IWUSR, 2660 }, 2661 .store = ipr_store_diagnostics 2662}; 2663 2664/** 2665 * ipr_show_adapter_state - Show the adapter's state 2666 * @class_dev: class device struct 2667 * @buf: buffer 2668 * 2669 * Return value: 2670 * number of bytes printed to buffer 2671 **/ 2672static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf) 2673{ 2674 struct Scsi_Host *shost = class_to_shost(class_dev); 2675 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2676 unsigned long lock_flags = 0; 2677 int len; 2678 2679 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2680 if (ioa_cfg->ioa_is_dead) 2681 len = snprintf(buf, PAGE_SIZE, "offline\n"); 2682 else 2683 len = snprintf(buf, PAGE_SIZE, "online\n"); 2684 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2685 return len; 2686} 2687 2688/** 2689 * ipr_store_adapter_state - Change adapter state 2690 * @class_dev: class_device struct 2691 * @buf: buffer 2692 * @count: buffer size 2693 * 2694 * This function will change the adapter's state. 2695 * 2696 * Return value: 2697 * count on success / other on failure 2698 **/ 2699static ssize_t ipr_store_adapter_state(struct class_device *class_dev, 2700 const char *buf, size_t count) 2701{ 2702 struct Scsi_Host *shost = class_to_shost(class_dev); 2703 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2704 unsigned long lock_flags; 2705 int result = count; 2706 2707 if (!capable(CAP_SYS_ADMIN)) 2708 return -EACCES; 2709 2710 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2711 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) { 2712 ioa_cfg->ioa_is_dead = 0; 2713 ioa_cfg->reset_retries = 0; 2714 ioa_cfg->in_ioa_bringdown = 0; 2715 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2716 } 2717 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2718 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2719 2720 return result; 2721} 2722 2723static struct class_device_attribute ipr_ioa_state_attr = { 2724 .attr = { 2725 .name = "state", 2726 .mode = S_IRUGO | S_IWUSR, 2727 }, 2728 .show = ipr_show_adapter_state, 2729 .store = ipr_store_adapter_state 2730}; 2731 2732/** 2733 * ipr_store_reset_adapter - Reset the adapter 2734 * @class_dev: class_device struct 2735 * @buf: buffer 2736 * @count: buffer size 2737 * 2738 * This function will reset the adapter. 2739 * 2740 * Return value: 2741 * count on success / other on failure 2742 **/ 2743static ssize_t ipr_store_reset_adapter(struct class_device *class_dev, 2744 const char *buf, size_t count) 2745{ 2746 struct Scsi_Host *shost = class_to_shost(class_dev); 2747 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2748 unsigned long lock_flags; 2749 int result = count; 2750 2751 if (!capable(CAP_SYS_ADMIN)) 2752 return -EACCES; 2753 2754 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2755 if (!ioa_cfg->in_reset_reload) 2756 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2757 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2758 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2759 2760 return result; 2761} 2762 2763static struct class_device_attribute ipr_ioa_reset_attr = { 2764 .attr = { 2765 .name = "reset_host", 2766 .mode = S_IWUSR, 2767 }, 2768 .store = ipr_store_reset_adapter 2769}; 2770 2771/** 2772 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 2773 * @buf_len: buffer length 2774 * 2775 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 2776 * list to use for microcode download 2777 * 2778 * Return value: 2779 * pointer to sglist / NULL on failure 2780 **/ 2781static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 2782{ 2783 int sg_size, order, bsize_elem, num_elem, i, j; 2784 struct ipr_sglist *sglist; 2785 struct scatterlist *scatterlist; 2786 struct page *page; 2787 2788 /* Get the minimum size per scatter/gather element */ 2789 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 2790 2791 /* Get the actual size per element */ 2792 order = get_order(sg_size); 2793 2794 /* Determine the actual number of bytes per element */ 2795 bsize_elem = PAGE_SIZE * (1 << order); 2796 2797 /* Determine the actual number of sg entries needed */ 2798 if (buf_len % bsize_elem) 2799 num_elem = (buf_len / bsize_elem) + 1; 2800 else 2801 num_elem = buf_len / bsize_elem; 2802 2803 /* Allocate a scatter/gather list for the DMA */ 2804 sglist = kzalloc(sizeof(struct ipr_sglist) + 2805 (sizeof(struct scatterlist) * (num_elem - 1)), 2806 GFP_KERNEL); 2807 2808 if (sglist == NULL) { 2809 ipr_trace; 2810 return NULL; 2811 } 2812 2813 scatterlist = sglist->scatterlist; 2814 2815 sglist->order = order; 2816 sglist->num_sg = num_elem; 2817 2818 /* Allocate a bunch of sg elements */ 2819 for (i = 0; i < num_elem; i++) { 2820 page = alloc_pages(GFP_KERNEL, order); 2821 if (!page) { 2822 ipr_trace; 2823 2824 /* Free up what we already allocated */ 2825 for (j = i - 1; j >= 0; j--) 2826 __free_pages(scatterlist[j].page, order); 2827 kfree(sglist); 2828 return NULL; 2829 } 2830 2831 scatterlist[i].page = page; 2832 } 2833 2834 return sglist; 2835} 2836 2837/** 2838 * ipr_free_ucode_buffer - Frees a microcode download buffer 2839 * @p_dnld: scatter/gather list pointer 2840 * 2841 * Free a DMA'able ucode download buffer previously allocated with 2842 * ipr_alloc_ucode_buffer 2843 * 2844 * Return value: 2845 * nothing 2846 **/ 2847static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 2848{ 2849 int i; 2850 2851 for (i = 0; i < sglist->num_sg; i++) 2852 __free_pages(sglist->scatterlist[i].page, sglist->order); 2853 2854 kfree(sglist); 2855} 2856 2857/** 2858 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 2859 * @sglist: scatter/gather list pointer 2860 * @buffer: buffer pointer 2861 * @len: buffer length 2862 * 2863 * Copy a microcode image from a user buffer into a buffer allocated by 2864 * ipr_alloc_ucode_buffer 2865 * 2866 * Return value: 2867 * 0 on success / other on failure 2868 **/ 2869static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 2870 u8 *buffer, u32 len) 2871{ 2872 int bsize_elem, i, result = 0; 2873 struct scatterlist *scatterlist; 2874 void *kaddr; 2875 2876 /* Determine the actual number of bytes per element */ 2877 bsize_elem = PAGE_SIZE * (1 << sglist->order); 2878 2879 scatterlist = sglist->scatterlist; 2880 2881 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { 2882 kaddr = kmap(scatterlist[i].page); 2883 memcpy(kaddr, buffer, bsize_elem); 2884 kunmap(scatterlist[i].page); 2885 2886 scatterlist[i].length = bsize_elem; 2887 2888 if (result != 0) { 2889 ipr_trace; 2890 return result; 2891 } 2892 } 2893 2894 if (len % bsize_elem) { 2895 kaddr = kmap(scatterlist[i].page); 2896 memcpy(kaddr, buffer, len % bsize_elem); 2897 kunmap(scatterlist[i].page); 2898 2899 scatterlist[i].length = len % bsize_elem; 2900 } 2901 2902 sglist->buffer_len = len; 2903 return result; 2904} 2905 2906/** 2907 * ipr_build_ucode_ioadl - Build a microcode download IOADL 2908 * @ipr_cmd: ipr command struct 2909 * @sglist: scatter/gather list 2910 * 2911 * Builds a microcode download IOA data list (IOADL). 2912 * 2913 **/ 2914static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, 2915 struct ipr_sglist *sglist) 2916{ 2917 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 2918 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 2919 struct scatterlist *scatterlist = sglist->scatterlist; 2920 int i; 2921 2922 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 2923 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 2924 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len); 2925 ioarcb->write_ioadl_len = 2926 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 2927 2928 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 2929 ioadl[i].flags_and_data_len = 2930 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); 2931 ioadl[i].address = 2932 cpu_to_be32(sg_dma_address(&scatterlist[i])); 2933 } 2934 2935 ioadl[i-1].flags_and_data_len |= 2936 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 2937} 2938 2939/** 2940 * ipr_update_ioa_ucode - Update IOA's microcode 2941 * @ioa_cfg: ioa config struct 2942 * @sglist: scatter/gather list 2943 * 2944 * Initiate an adapter reset to update the IOA's microcode 2945 * 2946 * Return value: 2947 * 0 on success / -EIO on failure 2948 **/ 2949static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, 2950 struct ipr_sglist *sglist) 2951{ 2952 unsigned long lock_flags; 2953 2954 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2955 2956 if (ioa_cfg->ucode_sglist) { 2957 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2958 dev_err(&ioa_cfg->pdev->dev, 2959 "Microcode download already in progress\n"); 2960 return -EIO; 2961 } 2962 2963 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist, 2964 sglist->num_sg, DMA_TO_DEVICE); 2965 2966 if (!sglist->num_dma_sg) { 2967 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2968 dev_err(&ioa_cfg->pdev->dev, 2969 "Failed to map microcode download buffer!\n"); 2970 return -EIO; 2971 } 2972 2973 ioa_cfg->ucode_sglist = sglist; 2974 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2975 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2976 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2977 2978 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2979 ioa_cfg->ucode_sglist = NULL; 2980 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2981 return 0; 2982} 2983 2984/** 2985 * ipr_store_update_fw - Update the firmware on the adapter 2986 * @class_dev: class_device struct 2987 * @buf: buffer 2988 * @count: buffer size 2989 * 2990 * This function will update the firmware on the adapter. 2991 * 2992 * Return value: 2993 * count on success / other on failure 2994 **/ 2995static ssize_t ipr_store_update_fw(struct class_device *class_dev, 2996 const char *buf, size_t count) 2997{ 2998 struct Scsi_Host *shost = class_to_shost(class_dev); 2999 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3000 struct ipr_ucode_image_header *image_hdr; 3001 const struct firmware *fw_entry; 3002 struct ipr_sglist *sglist; 3003 char fname[100]; 3004 char *src; 3005 int len, result, dnld_size; 3006 3007 if (!capable(CAP_SYS_ADMIN)) 3008 return -EACCES; 3009 3010 len = snprintf(fname, 99, "%s", buf); 3011 fname[len-1] = '\0'; 3012 3013 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 3014 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 3015 return -EIO; 3016 } 3017 3018 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 3019 3020 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size || 3021 (ioa_cfg->vpd_cbs->page3_data.card_type && 3022 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) { 3023 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n"); 3024 release_firmware(fw_entry); 3025 return -EINVAL; 3026 } 3027 3028 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 3029 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 3030 sglist = ipr_alloc_ucode_buffer(dnld_size); 3031 3032 if (!sglist) { 3033 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 3034 release_firmware(fw_entry); 3035 return -ENOMEM; 3036 } 3037 3038 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 3039 3040 if (result) { 3041 dev_err(&ioa_cfg->pdev->dev, 3042 "Microcode buffer copy to DMA buffer failed\n"); 3043 goto out; 3044 } 3045 3046 result = ipr_update_ioa_ucode(ioa_cfg, sglist); 3047 3048 if (!result) 3049 result = count; 3050out: 3051 ipr_free_ucode_buffer(sglist); 3052 release_firmware(fw_entry); 3053 return result; 3054} 3055 3056static struct class_device_attribute ipr_update_fw_attr = { 3057 .attr = { 3058 .name = "update_fw", 3059 .mode = S_IWUSR, 3060 }, 3061 .store = ipr_store_update_fw 3062}; 3063 3064static struct class_device_attribute *ipr_ioa_attrs[] = { 3065 &ipr_fw_version_attr, 3066 &ipr_log_level_attr, 3067 &ipr_diagnostics_attr, 3068 &ipr_ioa_state_attr, 3069 &ipr_ioa_reset_attr, 3070 &ipr_update_fw_attr, 3071 &ipr_ioa_cache_attr, 3072 NULL, 3073}; 3074 3075#ifdef CONFIG_SCSI_IPR_DUMP 3076/** 3077 * ipr_read_dump - Dump the adapter 3078 * @kobj: kobject struct 3079 * @buf: buffer 3080 * @off: offset 3081 * @count: buffer size 3082 * 3083 * Return value: 3084 * number of bytes printed to buffer 3085 **/ 3086static ssize_t ipr_read_dump(struct kobject *kobj, char *buf, 3087 loff_t off, size_t count) 3088{ 3089 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 3090 struct Scsi_Host *shost = class_to_shost(cdev); 3091 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3092 struct ipr_dump *dump; 3093 unsigned long lock_flags = 0; 3094 char *src; 3095 int len; 3096 size_t rc = count; 3097 3098 if (!capable(CAP_SYS_ADMIN)) 3099 return -EACCES; 3100 3101 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3102 dump = ioa_cfg->dump; 3103 3104 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 3105 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3106 return 0; 3107 } 3108 kref_get(&dump->kref); 3109 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3110 3111 if (off > dump->driver_dump.hdr.len) { 3112 kref_put(&dump->kref, ipr_release_dump); 3113 return 0; 3114 } 3115 3116 if (off + count > dump->driver_dump.hdr.len) { 3117 count = dump->driver_dump.hdr.len - off; 3118 rc = count; 3119 } 3120 3121 if (count && off < sizeof(dump->driver_dump)) { 3122 if (off + count > sizeof(dump->driver_dump)) 3123 len = sizeof(dump->driver_dump) - off; 3124 else 3125 len = count; 3126 src = (u8 *)&dump->driver_dump + off; 3127 memcpy(buf, src, len); 3128 buf += len; 3129 off += len; 3130 count -= len; 3131 } 3132 3133 off -= sizeof(dump->driver_dump); 3134 3135 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) { 3136 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data)) 3137 len = offsetof(struct ipr_ioa_dump, ioa_data) - off; 3138 else 3139 len = count; 3140 src = (u8 *)&dump->ioa_dump + off; 3141 memcpy(buf, src, len); 3142 buf += len; 3143 off += len; 3144 count -= len; 3145 } 3146 3147 off -= offsetof(struct ipr_ioa_dump, ioa_data); 3148 3149 while (count) { 3150 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 3151 len = PAGE_ALIGN(off) - off; 3152 else 3153 len = count; 3154 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 3155 src += off & ~PAGE_MASK; 3156 memcpy(buf, src, len); 3157 buf += len; 3158 off += len; 3159 count -= len; 3160 } 3161 3162 kref_put(&dump->kref, ipr_release_dump); 3163 return rc; 3164} 3165 3166/** 3167 * ipr_alloc_dump - Prepare for adapter dump 3168 * @ioa_cfg: ioa config struct 3169 * 3170 * Return value: 3171 * 0 on success / other on failure 3172 **/ 3173static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 3174{ 3175 struct ipr_dump *dump; 3176 unsigned long lock_flags = 0; 3177 3178 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); 3179 3180 if (!dump) { 3181 ipr_err("Dump memory allocation failed\n"); 3182 return -ENOMEM; 3183 } 3184 3185 kref_init(&dump->kref); 3186 dump->ioa_cfg = ioa_cfg; 3187 3188 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3189 3190 if (INACTIVE != ioa_cfg->sdt_state) { 3191 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3192 kfree(dump); 3193 return 0; 3194 } 3195 3196 ioa_cfg->dump = dump; 3197 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 3198 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) { 3199 ioa_cfg->dump_taken = 1; 3200 schedule_work(&ioa_cfg->work_q); 3201 } 3202 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3203 3204 return 0; 3205} 3206 3207/** 3208 * ipr_free_dump - Free adapter dump memory 3209 * @ioa_cfg: ioa config struct 3210 * 3211 * Return value: 3212 * 0 on success / other on failure 3213 **/ 3214static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 3215{ 3216 struct ipr_dump *dump; 3217 unsigned long lock_flags = 0; 3218 3219 ENTER; 3220 3221 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3222 dump = ioa_cfg->dump; 3223 if (!dump) { 3224 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3225 return 0; 3226 } 3227 3228 ioa_cfg->dump = NULL; 3229 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3230 3231 kref_put(&dump->kref, ipr_release_dump); 3232 3233 LEAVE; 3234 return 0; 3235} 3236 3237/** 3238 * ipr_write_dump - Setup dump state of adapter 3239 * @kobj: kobject struct 3240 * @buf: buffer 3241 * @off: offset 3242 * @count: buffer size 3243 * 3244 * Return value: 3245 * number of bytes printed to buffer 3246 **/ 3247static ssize_t ipr_write_dump(struct kobject *kobj, char *buf, 3248 loff_t off, size_t count) 3249{ 3250 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 3251 struct Scsi_Host *shost = class_to_shost(cdev); 3252 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3253 int rc; 3254 3255 if (!capable(CAP_SYS_ADMIN)) 3256 return -EACCES; 3257 3258 if (buf[0] == '1') 3259 rc = ipr_alloc_dump(ioa_cfg); 3260 else if (buf[0] == '0') 3261 rc = ipr_free_dump(ioa_cfg); 3262 else 3263 return -EINVAL; 3264 3265 if (rc) 3266 return rc; 3267 else 3268 return count; 3269} 3270 3271static struct bin_attribute ipr_dump_attr = { 3272 .attr = { 3273 .name = "dump", 3274 .mode = S_IRUSR | S_IWUSR, 3275 }, 3276 .size = 0, 3277 .read = ipr_read_dump, 3278 .write = ipr_write_dump 3279}; 3280#else 3281static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 3282#endif 3283 3284/** 3285 * ipr_change_queue_depth - Change the device's queue depth 3286 * @sdev: scsi device struct 3287 * @qdepth: depth to set 3288 * 3289 * Return value: 3290 * actual depth set 3291 **/ 3292static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) 3293{ 3294 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3295 struct ipr_resource_entry *res; 3296 unsigned long lock_flags = 0; 3297 3298 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3299 res = (struct ipr_resource_entry *)sdev->hostdata; 3300 3301 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN) 3302 qdepth = IPR_MAX_CMD_PER_ATA_LUN; 3303 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3304 3305 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); 3306 return sdev->queue_depth; 3307} 3308 3309/** 3310 * ipr_change_queue_type - Change the device's queue type 3311 * @dsev: scsi device struct 3312 * @tag_type: type of tags to use 3313 * 3314 * Return value: 3315 * actual queue type set 3316 **/ 3317static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type) 3318{ 3319 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3320 struct ipr_resource_entry *res; 3321 unsigned long lock_flags = 0; 3322 3323 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3324 res = (struct ipr_resource_entry *)sdev->hostdata; 3325 3326 if (res) { 3327 if (ipr_is_gscsi(res) && sdev->tagged_supported) { 3328 /* 3329 * We don't bother quiescing the device here since the 3330 * adapter firmware does it for us. 3331 */ 3332 scsi_set_tag_type(sdev, tag_type); 3333 3334 if (tag_type) 3335 scsi_activate_tcq(sdev, sdev->queue_depth); 3336 else 3337 scsi_deactivate_tcq(sdev, sdev->queue_depth); 3338 } else 3339 tag_type = 0; 3340 } else 3341 tag_type = 0; 3342 3343 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3344 return tag_type; 3345} 3346 3347/** 3348 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 3349 * @dev: device struct 3350 * @buf: buffer 3351 * 3352 * Return value: 3353 * number of bytes printed to buffer 3354 **/ 3355static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) 3356{ 3357 struct scsi_device *sdev = to_scsi_device(dev); 3358 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3359 struct ipr_resource_entry *res; 3360 unsigned long lock_flags = 0; 3361 ssize_t len = -ENXIO; 3362 3363 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3364 res = (struct ipr_resource_entry *)sdev->hostdata; 3365 if (res) 3366 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle); 3367 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3368 return len; 3369} 3370 3371static struct device_attribute ipr_adapter_handle_attr = { 3372 .attr = { 3373 .name = "adapter_handle", 3374 .mode = S_IRUSR, 3375 }, 3376 .show = ipr_show_adapter_handle 3377}; 3378 3379static struct device_attribute *ipr_dev_attrs[] = { 3380 &ipr_adapter_handle_attr, 3381 NULL, 3382}; 3383 3384/** 3385 * ipr_biosparam - Return the HSC mapping 3386 * @sdev: scsi device struct 3387 * @block_device: block device pointer 3388 * @capacity: capacity of the device 3389 * @parm: Array containing returned HSC values. 3390 * 3391 * This function generates the HSC parms that fdisk uses. 3392 * We want to make sure we return something that places partitions 3393 * on 4k boundaries for best performance with the IOA. 3394 * 3395 * Return value: 3396 * 0 on success 3397 **/ 3398static int ipr_biosparam(struct scsi_device *sdev, 3399 struct block_device *block_device, 3400 sector_t capacity, int *parm) 3401{ 3402 int heads, sectors; 3403 sector_t cylinders; 3404 3405 heads = 128; 3406 sectors = 32; 3407 3408 cylinders = capacity; 3409 sector_div(cylinders, (128 * 32)); 3410 3411 /* return result */ 3412 parm[0] = heads; 3413 parm[1] = sectors; 3414 parm[2] = cylinders; 3415 3416 return 0; 3417} 3418 3419/** 3420 * ipr_find_starget - Find target based on bus/target. 3421 * @starget: scsi target struct 3422 * 3423 * Return value: 3424 * resource entry pointer if found / NULL if not found 3425 **/ 3426static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget) 3427{ 3428 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 3429 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 3430 struct ipr_resource_entry *res; 3431 3432 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3433 if ((res->cfgte.res_addr.bus == starget->channel) && 3434 (res->cfgte.res_addr.target == starget->id) && 3435 (res->cfgte.res_addr.lun == 0)) { 3436 return res; 3437 } 3438 } 3439 3440 return NULL; 3441} 3442 3443static struct ata_port_info sata_port_info; 3444 3445/** 3446 * ipr_target_alloc - Prepare for commands to a SCSI target 3447 * @starget: scsi target struct 3448 * 3449 * If the device is a SATA device, this function allocates an 3450 * ATA port with libata, else it does nothing. 3451 * 3452 * Return value: 3453 * 0 on success / non-0 on failure 3454 **/ 3455static int ipr_target_alloc(struct scsi_target *starget) 3456{ 3457 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 3458 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 3459 struct ipr_sata_port *sata_port; 3460 struct ata_port *ap; 3461 struct ipr_resource_entry *res; 3462 unsigned long lock_flags; 3463 3464 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3465 res = ipr_find_starget(starget); 3466 starget->hostdata = NULL; 3467 3468 if (res && ipr_is_gata(res)) { 3469 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3470 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL); 3471 if (!sata_port) 3472 return -ENOMEM; 3473 3474 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost); 3475 if (ap) { 3476 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3477 sata_port->ioa_cfg = ioa_cfg; 3478 sata_port->ap = ap; 3479 sata_port->res = res; 3480 3481 res->sata_port = sata_port; 3482 ap->private_data = sata_port; 3483 starget->hostdata = sata_port; 3484 } else { 3485 kfree(sata_port); 3486 return -ENOMEM; 3487 } 3488 } 3489 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3490 3491 return 0; 3492} 3493 3494/** 3495 * ipr_target_destroy - Destroy a SCSI target 3496 * @starget: scsi target struct 3497 * 3498 * If the device was a SATA device, this function frees the libata 3499 * ATA port, else it does nothing. 3500 * 3501 **/ 3502static void ipr_target_destroy(struct scsi_target *starget) 3503{ 3504 struct ipr_sata_port *sata_port = starget->hostdata; 3505 3506 if (sata_port) { 3507 starget->hostdata = NULL; 3508 ata_sas_port_destroy(sata_port->ap); 3509 kfree(sata_port); 3510 } 3511} 3512 3513/** 3514 * ipr_find_sdev - Find device based on bus/target/lun. 3515 * @sdev: scsi device struct 3516 * 3517 * Return value: 3518 * resource entry pointer if found / NULL if not found 3519 **/ 3520static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev) 3521{ 3522 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3523 struct ipr_resource_entry *res; 3524 3525 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3526 if ((res->cfgte.res_addr.bus == sdev->channel) && 3527 (res->cfgte.res_addr.target == sdev->id) && 3528 (res->cfgte.res_addr.lun == sdev->lun)) 3529 return res; 3530 } 3531 3532 return NULL; 3533} 3534 3535/** 3536 * ipr_slave_destroy - Unconfigure a SCSI device 3537 * @sdev: scsi device struct 3538 * 3539 * Return value: 3540 * nothing 3541 **/ 3542static void ipr_slave_destroy(struct scsi_device *sdev) 3543{ 3544 struct ipr_resource_entry *res; 3545 struct ipr_ioa_cfg *ioa_cfg; 3546 unsigned long lock_flags = 0; 3547 3548 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3549 3550 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3551 res = (struct ipr_resource_entry *) sdev->hostdata; 3552 if (res) { 3553 if (res->sata_port) 3554 ata_port_disable(res->sata_port->ap); 3555 sdev->hostdata = NULL; 3556 res->sdev = NULL; 3557 res->sata_port = NULL; 3558 } 3559 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3560} 3561 3562/** 3563 * ipr_slave_configure - Configure a SCSI device 3564 * @sdev: scsi device struct 3565 * 3566 * This function configures the specified scsi device. 3567 * 3568 * Return value: 3569 * 0 on success 3570 **/ 3571static int ipr_slave_configure(struct scsi_device *sdev) 3572{ 3573 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3574 struct ipr_resource_entry *res; 3575 unsigned long lock_flags = 0; 3576 3577 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3578 res = sdev->hostdata; 3579 if (res) { 3580 if (ipr_is_af_dasd_device(res)) 3581 sdev->type = TYPE_RAID; 3582 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { 3583 sdev->scsi_level = 4; 3584 sdev->no_uld_attach = 1; 3585 } 3586 if (ipr_is_vset_device(res)) { 3587 sdev->timeout = IPR_VSET_RW_TIMEOUT; 3588 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); 3589 } 3590 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)) 3591 sdev->allow_restart = 1; 3592 if (ipr_is_gata(res) && res->sata_port) { 3593 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN); 3594 ata_sas_slave_configure(sdev, res->sata_port->ap); 3595 } else { 3596 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); 3597 } 3598 } 3599 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3600 return 0; 3601} 3602 3603/** 3604 * ipr_ata_slave_alloc - Prepare for commands to a SATA device 3605 * @sdev: scsi device struct 3606 * 3607 * This function initializes an ATA port so that future commands 3608 * sent through queuecommand will work. 3609 * 3610 * Return value: 3611 * 0 on success 3612 **/ 3613static int ipr_ata_slave_alloc(struct scsi_device *sdev) 3614{ 3615 struct ipr_sata_port *sata_port = NULL; 3616 int rc = -ENXIO; 3617 3618 ENTER; 3619 if (sdev->sdev_target) 3620 sata_port = sdev->sdev_target->hostdata; 3621 if (sata_port) 3622 rc = ata_sas_port_init(sata_port->ap); 3623 if (rc) 3624 ipr_slave_destroy(sdev); 3625 3626 LEAVE; 3627 return rc; 3628} 3629 3630/** 3631 * ipr_slave_alloc - Prepare for commands to a device. 3632 * @sdev: scsi device struct 3633 * 3634 * This function saves a pointer to the resource entry 3635 * in the scsi device struct if the device exists. We 3636 * can then use this pointer in ipr_queuecommand when 3637 * handling new commands. 3638 * 3639 * Return value: 3640 * 0 on success / -ENXIO if device does not exist 3641 **/ 3642static int ipr_slave_alloc(struct scsi_device *sdev) 3643{ 3644 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3645 struct ipr_resource_entry *res; 3646 unsigned long lock_flags; 3647 int rc = -ENXIO; 3648 3649 sdev->hostdata = NULL; 3650 3651 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3652 3653 res = ipr_find_sdev(sdev); 3654 if (res) { 3655 res->sdev = sdev; 3656 res->add_to_ml = 0; 3657 res->in_erp = 0; 3658 sdev->hostdata = res; 3659 if (!ipr_is_naca_model(res)) 3660 res->needs_sync_complete = 1; 3661 rc = 0; 3662 if (ipr_is_gata(res)) { 3663 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3664 return ipr_ata_slave_alloc(sdev); 3665 } 3666 } 3667 3668 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3669 3670 return rc; 3671} 3672 3673/** 3674 * ipr_eh_host_reset - Reset the host adapter 3675 * @scsi_cmd: scsi command struct 3676 * 3677 * Return value: 3678 * SUCCESS / FAILED 3679 **/ 3680static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd) 3681{ 3682 struct ipr_ioa_cfg *ioa_cfg; 3683 int rc; 3684 3685 ENTER; 3686 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 3687 3688 dev_err(&ioa_cfg->pdev->dev, 3689 "Adapter being reset as a result of error recovery.\n"); 3690 3691 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 3692 ioa_cfg->sdt_state = GET_DUMP; 3693 3694 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV); 3695 3696 LEAVE; 3697 return rc; 3698} 3699 3700static int ipr_eh_host_reset(struct scsi_cmnd * cmd) 3701{ 3702 int rc; 3703 3704 spin_lock_irq(cmd->device->host->host_lock); 3705 rc = __ipr_eh_host_reset(cmd); 3706 spin_unlock_irq(cmd->device->host->host_lock); 3707 3708 return rc; 3709} 3710 3711/** 3712 * ipr_device_reset - Reset the device 3713 * @ioa_cfg: ioa config struct 3714 * @res: resource entry struct 3715 * 3716 * This function issues a device reset to the affected device. 3717 * If the device is a SCSI device, a LUN reset will be sent 3718 * to the device first. If that does not work, a target reset 3719 * will be sent. If the device is a SATA device, a PHY reset will 3720 * be sent. 3721 * 3722 * Return value: 3723 * 0 on success / non-zero on failure 3724 **/ 3725static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, 3726 struct ipr_resource_entry *res) 3727{ 3728 struct ipr_cmnd *ipr_cmd; 3729 struct ipr_ioarcb *ioarcb; 3730 struct ipr_cmd_pkt *cmd_pkt; 3731 struct ipr_ioarcb_ata_regs *regs; 3732 u32 ioasc; 3733 3734 ENTER; 3735 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3736 ioarcb = &ipr_cmd->ioarcb; 3737 cmd_pkt = &ioarcb->cmd_pkt; 3738 regs = &ioarcb->add_data.u.regs; 3739 3740 ioarcb->res_handle = res->cfgte.res_handle; 3741 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3742 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 3743 if (ipr_is_gata(res)) { 3744 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET; 3745 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags)); 3746 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 3747 } 3748 3749 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 3750 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3751 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3752 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) 3753 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata, 3754 sizeof(struct ipr_ioasa_gata)); 3755 3756 LEAVE; 3757 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0); 3758} 3759 3760/** 3761 * ipr_sata_reset - Reset the SATA port 3762 * @ap: SATA port to reset 3763 * @classes: class of the attached device 3764 * 3765 * This function issues a SATA phy reset to the affected ATA port. 3766 * 3767 * Return value: 3768 * 0 on success / non-zero on failure 3769 **/ 3770static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes) 3771{ 3772 struct ipr_sata_port *sata_port = ap->private_data; 3773 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 3774 struct ipr_resource_entry *res; 3775 unsigned long lock_flags = 0; 3776 int rc = -ENXIO; 3777 3778 ENTER; 3779 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3780 while(ioa_cfg->in_reset_reload) { 3781 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3782 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3783 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3784 } 3785 3786 res = sata_port->res; 3787 if (res) { 3788 rc = ipr_device_reset(ioa_cfg, res); 3789 switch(res->cfgte.proto) { 3790 case IPR_PROTO_SATA: 3791 case IPR_PROTO_SAS_STP: 3792 *classes = ATA_DEV_ATA; 3793 break; 3794 case IPR_PROTO_SATA_ATAPI: 3795 case IPR_PROTO_SAS_STP_ATAPI: 3796 *classes = ATA_DEV_ATAPI; 3797 break; 3798 default: 3799 *classes = ATA_DEV_UNKNOWN; 3800 break; 3801 }; 3802 } 3803 3804 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3805 LEAVE; 3806 return rc; 3807} 3808 3809/** 3810 * ipr_eh_dev_reset - Reset the device 3811 * @scsi_cmd: scsi command struct 3812 * 3813 * This function issues a device reset to the affected device. 3814 * A LUN reset will be sent to the device first. If that does 3815 * not work, a target reset will be sent. 3816 * 3817 * Return value: 3818 * SUCCESS / FAILED 3819 **/ 3820static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) 3821{ 3822 struct ipr_cmnd *ipr_cmd; 3823 struct ipr_ioa_cfg *ioa_cfg; 3824 struct ipr_resource_entry *res; 3825 struct ata_port *ap; 3826 int rc = 0; 3827 3828 ENTER; 3829 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 3830 res = scsi_cmd->device->hostdata; 3831 3832 if (!res) 3833 return FAILED; 3834 3835 /* 3836 * If we are currently going through reset/reload, return failed. This will force the 3837 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 3838 * reset to complete 3839 */ 3840 if (ioa_cfg->in_reset_reload) 3841 return FAILED; 3842 if (ioa_cfg->ioa_is_dead) 3843 return FAILED; 3844 3845 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3846 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) { 3847 if (ipr_cmd->scsi_cmd) 3848 ipr_cmd->done = ipr_scsi_eh_done; 3849 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) { 3850 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT; 3851 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED; 3852 } 3853 } 3854 } 3855 3856 res->resetting_device = 1; 3857 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); 3858 3859 if (ipr_is_gata(res) && res->sata_port) { 3860 ap = res->sata_port->ap; 3861 spin_unlock_irq(scsi_cmd->device->host->host_lock); 3862 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL); 3863 spin_lock_irq(scsi_cmd->device->host->host_lock); 3864 } else 3865 rc = ipr_device_reset(ioa_cfg, res); 3866 res->resetting_device = 0; 3867 3868 LEAVE; 3869 return (rc ? FAILED : SUCCESS); 3870} 3871 3872static int ipr_eh_dev_reset(struct scsi_cmnd * cmd) 3873{ 3874 int rc; 3875 3876 spin_lock_irq(cmd->device->host->host_lock); 3877 rc = __ipr_eh_dev_reset(cmd); 3878 spin_unlock_irq(cmd->device->host->host_lock); 3879 3880 return rc; 3881} 3882 3883/** 3884 * ipr_bus_reset_done - Op done function for bus reset. 3885 * @ipr_cmd: ipr command struct 3886 * 3887 * This function is the op done function for a bus reset 3888 * 3889 * Return value: 3890 * none 3891 **/ 3892static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 3893{ 3894 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3895 struct ipr_resource_entry *res; 3896 3897 ENTER; 3898 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3899 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle, 3900 sizeof(res->cfgte.res_handle))) { 3901 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus); 3902 break; 3903 } 3904 } 3905 3906 /* 3907 * If abort has not completed, indicate the reset has, else call the 3908 * abort's done function to wake the sleeping eh thread 3909 */ 3910 if (ipr_cmd->sibling->sibling) 3911 ipr_cmd->sibling->sibling = NULL; 3912 else 3913 ipr_cmd->sibling->done(ipr_cmd->sibling); 3914 3915 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3916 LEAVE; 3917} 3918 3919/** 3920 * ipr_abort_timeout - An abort task has timed out 3921 * @ipr_cmd: ipr command struct 3922 * 3923 * This function handles when an abort task times out. If this 3924 * happens we issue a bus reset since we have resources tied 3925 * up that must be freed before returning to the midlayer. 3926 * 3927 * Return value: 3928 * none 3929 **/ 3930static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 3931{ 3932 struct ipr_cmnd *reset_cmd; 3933 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3934 struct ipr_cmd_pkt *cmd_pkt; 3935 unsigned long lock_flags = 0; 3936 3937 ENTER; 3938 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3939 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 3940 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3941 return; 3942 } 3943 3944 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n"); 3945 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3946 ipr_cmd->sibling = reset_cmd; 3947 reset_cmd->sibling = ipr_cmd; 3948 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 3949 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 3950 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3951 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 3952 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 3953 3954 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 3955 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3956 LEAVE; 3957} 3958 3959/** 3960 * ipr_cancel_op - Cancel specified op 3961 * @scsi_cmd: scsi command struct 3962 * 3963 * This function cancels specified op. 3964 * 3965 * Return value: 3966 * SUCCESS / FAILED 3967 **/ 3968static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) 3969{ 3970 struct ipr_cmnd *ipr_cmd; 3971 struct ipr_ioa_cfg *ioa_cfg; 3972 struct ipr_resource_entry *res; 3973 struct ipr_cmd_pkt *cmd_pkt; 3974 u32 ioasc; 3975 int op_found = 0; 3976 3977 ENTER; 3978 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 3979 res = scsi_cmd->device->hostdata; 3980 3981 /* If we are currently going through reset/reload, return failed. 3982 * This will force the mid-layer to call ipr_eh_host_reset, 3983 * which will then go to sleep and wait for the reset to complete 3984 */ 3985 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) 3986 return FAILED; 3987 if (!res || !ipr_is_gscsi(res)) 3988 return FAILED; 3989 3990 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3991 if (ipr_cmd->scsi_cmd == scsi_cmd) { 3992 ipr_cmd->done = ipr_scsi_eh_done; 3993 op_found = 1; 3994 break; 3995 } 3996 } 3997 3998 if (!op_found) 3999 return SUCCESS; 4000 4001 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4002 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 4003 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4004 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4005 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4006 ipr_cmd->u.sdev = scsi_cmd->device; 4007 4008 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n", 4009 scsi_cmd->cmnd[0]); 4010 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 4011 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4012 4013 /* 4014 * If the abort task timed out and we sent a bus reset, we will get 4015 * one the following responses to the abort 4016 */ 4017 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 4018 ioasc = 0; 4019 ipr_trace; 4020 } 4021 4022 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4023 if (!ipr_is_naca_model(res)) 4024 res->needs_sync_complete = 1; 4025 4026 LEAVE; 4027 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); 4028} 4029 4030/** 4031 * ipr_eh_abort - Abort a single op 4032 * @scsi_cmd: scsi command struct 4033 * 4034 * Return value: 4035 * SUCCESS / FAILED 4036 **/ 4037static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) 4038{ 4039 unsigned long flags; 4040 int rc; 4041 4042 ENTER; 4043 4044 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 4045 rc = ipr_cancel_op(scsi_cmd); 4046 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 4047 4048 LEAVE; 4049 return rc; 4050} 4051 4052/** 4053 * ipr_handle_other_interrupt - Handle "other" interrupts 4054 * @ioa_cfg: ioa config struct 4055 * @int_reg: interrupt register 4056 * 4057 * Return value: 4058 * IRQ_NONE / IRQ_HANDLED 4059 **/ 4060static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 4061 volatile u32 int_reg) 4062{ 4063 irqreturn_t rc = IRQ_HANDLED; 4064 4065 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 4066 /* Mask the interrupt */ 4067 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 4068 4069 /* Clear the interrupt */ 4070 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); 4071 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 4072 4073 list_del(&ioa_cfg->reset_cmd->queue); 4074 del_timer(&ioa_cfg->reset_cmd->timer); 4075 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 4076 } else { 4077 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 4078 ioa_cfg->ioa_unit_checked = 1; 4079 else 4080 dev_err(&ioa_cfg->pdev->dev, 4081 "Permanent IOA failure. 0x%08X\n", int_reg); 4082 4083 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4084 ioa_cfg->sdt_state = GET_DUMP; 4085 4086 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 4087 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4088 } 4089 4090 return rc; 4091} 4092 4093/** 4094 * ipr_isr - Interrupt service routine 4095 * @irq: irq number 4096 * @devp: pointer to ioa config struct 4097 * 4098 * Return value: 4099 * IRQ_NONE / IRQ_HANDLED 4100 **/ 4101static irqreturn_t ipr_isr(int irq, void *devp) 4102{ 4103 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 4104 unsigned long lock_flags = 0; 4105 volatile u32 int_reg, int_mask_reg; 4106 u32 ioasc; 4107 u16 cmd_index; 4108 struct ipr_cmnd *ipr_cmd; 4109 irqreturn_t rc = IRQ_NONE; 4110 4111 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4112 4113 /* If interrupts are disabled, ignore the interrupt */ 4114 if (!ioa_cfg->allow_interrupts) { 4115 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4116 return IRQ_NONE; 4117 } 4118 4119 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 4120 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 4121 4122 /* If an interrupt on the adapter did not occur, ignore it */ 4123 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) { 4124 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4125 return IRQ_NONE; 4126 } 4127 4128 while (1) { 4129 ipr_cmd = NULL; 4130 4131 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 4132 ioa_cfg->toggle_bit) { 4133 4134 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & 4135 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 4136 4137 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { 4138 ioa_cfg->errors_logged++; 4139 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n"); 4140 4141 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4142 ioa_cfg->sdt_state = GET_DUMP; 4143 4144 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4145 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4146 return IRQ_HANDLED; 4147 } 4148 4149 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 4150 4151 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4152 4153 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 4154 4155 list_del(&ipr_cmd->queue); 4156 del_timer(&ipr_cmd->timer); 4157 ipr_cmd->done(ipr_cmd); 4158 4159 rc = IRQ_HANDLED; 4160 4161 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { 4162 ioa_cfg->hrrq_curr++; 4163 } else { 4164 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 4165 ioa_cfg->toggle_bit ^= 1u; 4166 } 4167 } 4168 4169 if (ipr_cmd != NULL) { 4170 /* Clear the PCI interrupt */ 4171 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg); 4172 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 4173 } else 4174 break; 4175 } 4176 4177 if (unlikely(rc == IRQ_NONE)) 4178 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 4179 4180 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4181 return rc; 4182} 4183 4184/** 4185 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 4186 * @ioa_cfg: ioa config struct 4187 * @ipr_cmd: ipr command struct 4188 * 4189 * Return value: 4190 * 0 on success / -1 on failure 4191 **/ 4192static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 4193 struct ipr_cmnd *ipr_cmd) 4194{ 4195 int i; 4196 struct scatterlist *sglist; 4197 u32 length; 4198 u32 ioadl_flags = 0; 4199 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4200 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4201 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4202 4203 length = scsi_cmd->request_bufflen; 4204 4205 if (length == 0) 4206 return 0; 4207 4208 if (scsi_cmd->use_sg) { 4209 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, 4210 scsi_cmd->request_buffer, 4211 scsi_cmd->use_sg, 4212 scsi_cmd->sc_data_direction); 4213 4214 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 4215 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 4216 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4217 ioarcb->write_data_transfer_length = cpu_to_be32(length); 4218 ioarcb->write_ioadl_len = 4219 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 4220 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 4221 ioadl_flags = IPR_IOADL_FLAGS_READ; 4222 ioarcb->read_data_transfer_length = cpu_to_be32(length); 4223 ioarcb->read_ioadl_len = 4224 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 4225 } 4226 4227 sglist = scsi_cmd->request_buffer; 4228 4229 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 4230 ioadl[i].flags_and_data_len = 4231 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i])); 4232 ioadl[i].address = 4233 cpu_to_be32(sg_dma_address(&sglist[i])); 4234 } 4235 4236 if (likely(ipr_cmd->dma_use_sg)) { 4237 ioadl[i-1].flags_and_data_len |= 4238 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 4239 return 0; 4240 } else 4241 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 4242 } else { 4243 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 4244 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 4245 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4246 ioarcb->write_data_transfer_length = cpu_to_be32(length); 4247 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4248 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 4249 ioadl_flags = IPR_IOADL_FLAGS_READ; 4250 ioarcb->read_data_transfer_length = cpu_to_be32(length); 4251 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4252 } 4253 4254 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev, 4255 scsi_cmd->request_buffer, length, 4256 scsi_cmd->sc_data_direction); 4257 4258 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) { 4259 ipr_cmd->dma_use_sg = 1; 4260 ioadl[0].flags_and_data_len = 4261 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST); 4262 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle); 4263 return 0; 4264 } else 4265 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n"); 4266 } 4267 4268 return -1; 4269} 4270 4271/** 4272 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes 4273 * @scsi_cmd: scsi command struct 4274 * 4275 * Return value: 4276 * task attributes 4277 **/ 4278static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) 4279{ 4280 u8 tag[2]; 4281 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; 4282 4283 if (scsi_populate_tag_msg(scsi_cmd, tag)) { 4284 switch (tag[0]) { 4285 case MSG_SIMPLE_TAG: 4286 rc = IPR_FLAGS_LO_SIMPLE_TASK; 4287 break; 4288 case MSG_HEAD_TAG: 4289 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; 4290 break; 4291 case MSG_ORDERED_TAG: 4292 rc = IPR_FLAGS_LO_ORDERED_TASK; 4293 break; 4294 }; 4295 } 4296 4297 return rc; 4298} 4299 4300/** 4301 * ipr_erp_done - Process completion of ERP for a device 4302 * @ipr_cmd: ipr command struct 4303 * 4304 * This function copies the sense buffer into the scsi_cmd 4305 * struct and pushes the scsi_done function. 4306 * 4307 * Return value: 4308 * nothing 4309 **/ 4310static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 4311{ 4312 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4313 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4314 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4315 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4316 4317 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 4318 scsi_cmd->result |= (DID_ERROR << 16); 4319 scmd_printk(KERN_ERR, scsi_cmd, 4320 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 4321 } else { 4322 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 4323 SCSI_SENSE_BUFFERSIZE); 4324 } 4325 4326 if (res) { 4327 if (!ipr_is_naca_model(res)) 4328 res->needs_sync_complete = 1; 4329 res->in_erp = 0; 4330 } 4331 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 4332 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4333 scsi_cmd->scsi_done(scsi_cmd); 4334} 4335 4336/** 4337 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 4338 * @ipr_cmd: ipr command struct 4339 * 4340 * Return value: 4341 * none 4342 **/ 4343static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 4344{ 4345 struct ipr_ioarcb *ioarcb; 4346 struct ipr_ioasa *ioasa; 4347 4348 ioarcb = &ipr_cmd->ioarcb; 4349 ioasa = &ipr_cmd->ioasa; 4350 4351 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 4352 ioarcb->write_data_transfer_length = 0; 4353 ioarcb->read_data_transfer_length = 0; 4354 ioarcb->write_ioadl_len = 0; 4355 ioarcb->read_ioadl_len = 0; 4356 ioasa->ioasc = 0; 4357 ioasa->residual_data_len = 0; 4358} 4359 4360/** 4361 * ipr_erp_request_sense - Send request sense to a device 4362 * @ipr_cmd: ipr command struct 4363 * 4364 * This function sends a request sense to a device as a result 4365 * of a check condition. 4366 * 4367 * Return value: 4368 * nothing 4369 **/ 4370static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 4371{ 4372 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4373 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4374 4375 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 4376 ipr_erp_done(ipr_cmd); 4377 return; 4378 } 4379 4380 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 4381 4382 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 4383 cmd_pkt->cdb[0] = REQUEST_SENSE; 4384 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 4385 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 4386 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 4387 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 4388 4389 ipr_cmd->ioadl[0].flags_and_data_len = 4390 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE); 4391 ipr_cmd->ioadl[0].address = 4392 cpu_to_be32(ipr_cmd->sense_buffer_dma); 4393 4394 ipr_cmd->ioarcb.read_ioadl_len = 4395 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4396 ipr_cmd->ioarcb.read_data_transfer_length = 4397 cpu_to_be32(SCSI_SENSE_BUFFERSIZE); 4398 4399 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 4400 IPR_REQUEST_SENSE_TIMEOUT * 2); 4401} 4402 4403/** 4404 * ipr_erp_cancel_all - Send cancel all to a device 4405 * @ipr_cmd: ipr command struct 4406 * 4407 * This function sends a cancel all to a device to clear the 4408 * queue. If we are running TCQ on the device, QERR is set to 1, 4409 * which means all outstanding ops have been dropped on the floor. 4410 * Cancel all will return them to us. 4411 * 4412 * Return value: 4413 * nothing 4414 **/ 4415static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 4416{ 4417 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4418 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4419 struct ipr_cmd_pkt *cmd_pkt; 4420 4421 res->in_erp = 1; 4422 4423 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 4424 4425 if (!scsi_get_tag_type(scsi_cmd->device)) { 4426 ipr_erp_request_sense(ipr_cmd); 4427 return; 4428 } 4429 4430 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4431 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4432 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4433 4434 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 4435 IPR_CANCEL_ALL_TIMEOUT); 4436} 4437 4438/** 4439 * ipr_dump_ioasa - Dump contents of IOASA 4440 * @ioa_cfg: ioa config struct 4441 * @ipr_cmd: ipr command struct 4442 * @res: resource entry struct 4443 * 4444 * This function is invoked by the interrupt handler when ops 4445 * fail. It will log the IOASA if appropriate. Only called 4446 * for GPDD ops. 4447 * 4448 * Return value: 4449 * none 4450 **/ 4451static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 4452 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res) 4453{ 4454 int i; 4455 u16 data_len; 4456 u32 ioasc; 4457 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4458 __be32 *ioasa_data = (__be32 *)ioasa; 4459 int error_index; 4460 4461 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK; 4462 4463 if (0 == ioasc) 4464 return; 4465 4466 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 4467 return; 4468 4469 error_index = ipr_get_error(ioasc); 4470 4471 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 4472 /* Don't log an error if the IOA already logged one */ 4473 if (ioasa->ilid != 0) 4474 return; 4475 4476 if (!ipr_is_gscsi(res)) 4477 return; 4478 4479 if (ipr_error_table[error_index].log_ioasa == 0) 4480 return; 4481 } 4482 4483 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error); 4484 4485 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len)) 4486 data_len = sizeof(struct ipr_ioasa); 4487 else 4488 data_len = be16_to_cpu(ioasa->ret_stat_len); 4489 4490 ipr_err("IOASA Dump:\n"); 4491 4492 for (i = 0; i < data_len / 4; i += 4) { 4493 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 4494 be32_to_cpu(ioasa_data[i]), 4495 be32_to_cpu(ioasa_data[i+1]), 4496 be32_to_cpu(ioasa_data[i+2]), 4497 be32_to_cpu(ioasa_data[i+3])); 4498 } 4499} 4500 4501/** 4502 * ipr_gen_sense - Generate SCSI sense data from an IOASA 4503 * @ioasa: IOASA 4504 * @sense_buf: sense data buffer 4505 * 4506 * Return value: 4507 * none 4508 **/ 4509static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 4510{ 4511 u32 failing_lba; 4512 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 4513 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 4514 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4515 u32 ioasc = be32_to_cpu(ioasa->ioasc); 4516 4517 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 4518 4519 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 4520 return; 4521 4522 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 4523 4524 if (ipr_is_vset_device(res) && 4525 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 4526 ioasa->u.vset.failing_lba_hi != 0) { 4527 sense_buf[0] = 0x72; 4528 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 4529 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 4530 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 4531 4532 sense_buf[7] = 12; 4533 sense_buf[8] = 0; 4534 sense_buf[9] = 0x0A; 4535 sense_buf[10] = 0x80; 4536 4537 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 4538 4539 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 4540 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 4541 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 4542 sense_buf[15] = failing_lba & 0x000000ff; 4543 4544 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 4545 4546 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 4547 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 4548 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 4549 sense_buf[19] = failing_lba & 0x000000ff; 4550 } else { 4551 sense_buf[0] = 0x70; 4552 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 4553 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 4554 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 4555 4556 /* Illegal request */ 4557 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 4558 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 4559 sense_buf[7] = 10; /* additional length */ 4560 4561 /* IOARCB was in error */ 4562 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 4563 sense_buf[15] = 0xC0; 4564 else /* Parameter data was invalid */ 4565 sense_buf[15] = 0x80; 4566 4567 sense_buf[16] = 4568 ((IPR_FIELD_POINTER_MASK & 4569 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff; 4570 sense_buf[17] = 4571 (IPR_FIELD_POINTER_MASK & 4572 be32_to_cpu(ioasa->ioasc_specific)) & 0xff; 4573 } else { 4574 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 4575 if (ipr_is_vset_device(res)) 4576 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 4577 else 4578 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 4579 4580 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 4581 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 4582 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 4583 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 4584 sense_buf[6] = failing_lba & 0x000000ff; 4585 } 4586 4587 sense_buf[7] = 6; /* additional length */ 4588 } 4589 } 4590} 4591 4592/** 4593 * ipr_get_autosense - Copy autosense data to sense buffer 4594 * @ipr_cmd: ipr command struct 4595 * 4596 * This function copies the autosense buffer to the buffer 4597 * in the scsi_cmd, if there is autosense available. 4598 * 4599 * Return value: 4600 * 1 if autosense was available / 0 if not 4601 **/ 4602static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) 4603{ 4604 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4605 4606 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0) 4607 return 0; 4608 4609 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, 4610 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), 4611 SCSI_SENSE_BUFFERSIZE)); 4612 return 1; 4613} 4614 4615/** 4616 * ipr_erp_start - Process an error response for a SCSI op 4617 * @ioa_cfg: ioa config struct 4618 * @ipr_cmd: ipr command struct 4619 * 4620 * This function determines whether or not to initiate ERP 4621 * on the affected device. 4622 * 4623 * Return value: 4624 * nothing 4625 **/ 4626static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 4627 struct ipr_cmnd *ipr_cmd) 4628{ 4629 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4630 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4631 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4632 4633 if (!res) { 4634 ipr_scsi_eh_done(ipr_cmd); 4635 return; 4636 } 4637 4638 if (!ipr_is_gscsi(res)) 4639 ipr_gen_sense(ipr_cmd); 4640 4641 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 4642 4643 switch (ioasc & IPR_IOASC_IOASC_MASK) { 4644 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 4645 if (ipr_is_naca_model(res)) 4646 scsi_cmd->result |= (DID_ABORT << 16); 4647 else 4648 scsi_cmd->result |= (DID_IMM_RETRY << 16); 4649 break; 4650 case IPR_IOASC_IR_RESOURCE_HANDLE: 4651 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: 4652 scsi_cmd->result |= (DID_NO_CONNECT << 16); 4653 break; 4654 case IPR_IOASC_HW_SEL_TIMEOUT: 4655 scsi_cmd->result |= (DID_NO_CONNECT << 16); 4656 if (!ipr_is_naca_model(res)) 4657 res->needs_sync_complete = 1; 4658 break; 4659 case IPR_IOASC_SYNC_REQUIRED: 4660 if (!res->in_erp) 4661 res->needs_sync_complete = 1; 4662 scsi_cmd->result |= (DID_IMM_RETRY << 16); 4663 break; 4664 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 4665 case IPR_IOASA_IR_DUAL_IOA_DISABLED: 4666 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 4667 break; 4668 case IPR_IOASC_BUS_WAS_RESET: 4669 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 4670 /* 4671 * Report the bus reset and ask for a retry. The device 4672 * will give CC/UA the next command. 4673 */ 4674 if (!res->resetting_device) 4675 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 4676 scsi_cmd->result |= (DID_ERROR << 16); 4677 if (!ipr_is_naca_model(res)) 4678 res->needs_sync_complete = 1; 4679 break; 4680 case IPR_IOASC_HW_DEV_BUS_STATUS: 4681 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 4682 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 4683 if (!ipr_get_autosense(ipr_cmd)) { 4684 if (!ipr_is_naca_model(res)) { 4685 ipr_erp_cancel_all(ipr_cmd); 4686 return; 4687 } 4688 } 4689 } 4690 if (!ipr_is_naca_model(res)) 4691 res->needs_sync_complete = 1; 4692 break; 4693 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 4694 break; 4695 default: 4696 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 4697 scsi_cmd->result |= (DID_ERROR << 16); 4698 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) 4699 res->needs_sync_complete = 1; 4700 break; 4701 } 4702 4703 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 4704 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4705 scsi_cmd->scsi_done(scsi_cmd); 4706} 4707 4708/** 4709 * ipr_scsi_done - mid-layer done function 4710 * @ipr_cmd: ipr command struct 4711 * 4712 * This function is invoked by the interrupt handler for 4713 * ops generated by the SCSI mid-layer 4714 * 4715 * Return value: 4716 * none 4717 **/ 4718static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 4719{ 4720 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4721 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4722 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4723 4724 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len); 4725 4726 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 4727 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 4728 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4729 scsi_cmd->scsi_done(scsi_cmd); 4730 } else 4731 ipr_erp_start(ioa_cfg, ipr_cmd); 4732} 4733 4734/** 4735 * ipr_queuecommand - Queue a mid-layer request 4736 * @scsi_cmd: scsi command struct 4737 * @done: done function 4738 * 4739 * This function queues a request generated by the mid-layer. 4740 * 4741 * Return value: 4742 * 0 on success 4743 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 4744 * SCSI_MLQUEUE_HOST_BUSY if host is busy 4745 **/ 4746static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, 4747 void (*done) (struct scsi_cmnd *)) 4748{ 4749 struct ipr_ioa_cfg *ioa_cfg; 4750 struct ipr_resource_entry *res; 4751 struct ipr_ioarcb *ioarcb; 4752 struct ipr_cmnd *ipr_cmd; 4753 int rc = 0; 4754 4755 scsi_cmd->scsi_done = done; 4756 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 4757 res = scsi_cmd->device->hostdata; 4758 scsi_cmd->result = (DID_OK << 16); 4759 4760 /* 4761 * We are currently blocking all devices due to a host reset 4762 * We have told the host to stop giving us new requests, but 4763 * ERP ops don't count. FIXME 4764 */ 4765 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) 4766 return SCSI_MLQUEUE_HOST_BUSY; 4767 4768 /* 4769 * FIXME - Create scsi_set_host_offline interface 4770 * and the ioa_is_dead check can be removed 4771 */ 4772 if (unlikely(ioa_cfg->ioa_is_dead || !res)) { 4773 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 4774 scsi_cmd->result = (DID_NO_CONNECT << 16); 4775 scsi_cmd->scsi_done(scsi_cmd); 4776 return 0; 4777 } 4778 4779 if (ipr_is_gata(res) && res->sata_port) 4780 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap); 4781 4782 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4783 ioarcb = &ipr_cmd->ioarcb; 4784 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 4785 4786 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 4787 ipr_cmd->scsi_cmd = scsi_cmd; 4788 ioarcb->res_handle = res->cfgte.res_handle; 4789 ipr_cmd->done = ipr_scsi_done; 4790 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 4791 4792 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 4793 if (scsi_cmd->underflow == 0) 4794 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 4795 4796 if (res->needs_sync_complete) { 4797 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 4798 res->needs_sync_complete = 0; 4799 } 4800 4801 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 4802 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 4803 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 4804 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); 4805 } 4806 4807 if (scsi_cmd->cmnd[0] >= 0xC0 && 4808 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) 4809 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4810 4811 if (likely(rc == 0)) 4812 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 4813 4814 if (likely(rc == 0)) { 4815 mb(); 4816 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 4817 ioa_cfg->regs.ioarrin_reg); 4818 } else { 4819 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4820 return SCSI_MLQUEUE_HOST_BUSY; 4821 } 4822 4823 return 0; 4824} 4825 4826/** 4827 * ipr_ioctl - IOCTL handler 4828 * @sdev: scsi device struct 4829 * @cmd: IOCTL cmd 4830 * @arg: IOCTL arg 4831 * 4832 * Return value: 4833 * 0 on success / other on failure 4834 **/ 4835static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) 4836{ 4837 struct ipr_resource_entry *res; 4838 4839 res = (struct ipr_resource_entry *)sdev->hostdata; 4840 if (res && ipr_is_gata(res)) 4841 return ata_scsi_ioctl(sdev, cmd, arg); 4842 4843 return -EINVAL; 4844} 4845 4846/** 4847 * ipr_info - Get information about the card/driver 4848 * @scsi_host: scsi host struct 4849 * 4850 * Return value: 4851 * pointer to buffer with description string 4852 **/ 4853static const char * ipr_ioa_info(struct Scsi_Host *host) 4854{ 4855 static char buffer[512]; 4856 struct ipr_ioa_cfg *ioa_cfg; 4857 unsigned long lock_flags = 0; 4858 4859 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 4860 4861 spin_lock_irqsave(host->host_lock, lock_flags); 4862 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 4863 spin_unlock_irqrestore(host->host_lock, lock_flags); 4864 4865 return buffer; 4866} 4867 4868static struct scsi_host_template driver_template = { 4869 .module = THIS_MODULE, 4870 .name = "IPR", 4871 .info = ipr_ioa_info, 4872 .ioctl = ipr_ioctl, 4873 .queuecommand = ipr_queuecommand, 4874 .eh_abort_handler = ipr_eh_abort, 4875 .eh_device_reset_handler = ipr_eh_dev_reset, 4876 .eh_host_reset_handler = ipr_eh_host_reset, 4877 .slave_alloc = ipr_slave_alloc, 4878 .slave_configure = ipr_slave_configure, 4879 .slave_destroy = ipr_slave_destroy, 4880 .target_alloc = ipr_target_alloc, 4881 .target_destroy = ipr_target_destroy, 4882 .change_queue_depth = ipr_change_queue_depth, 4883 .change_queue_type = ipr_change_queue_type, 4884 .bios_param = ipr_biosparam, 4885 .can_queue = IPR_MAX_COMMANDS, 4886 .this_id = -1, 4887 .sg_tablesize = IPR_MAX_SGLIST, 4888 .max_sectors = IPR_IOA_MAX_SECTORS, 4889 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 4890 .use_clustering = ENABLE_CLUSTERING, 4891 .shost_attrs = ipr_ioa_attrs, 4892 .sdev_attrs = ipr_dev_attrs, 4893 .proc_name = IPR_NAME 4894}; 4895 4896/** 4897 * ipr_ata_phy_reset - libata phy_reset handler 4898 * @ap: ata port to reset 4899 * 4900 **/ 4901static void ipr_ata_phy_reset(struct ata_port *ap) 4902{ 4903 unsigned long flags; 4904 struct ipr_sata_port *sata_port = ap->private_data; 4905 struct ipr_resource_entry *res = sata_port->res; 4906 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 4907 int rc; 4908 4909 ENTER; 4910 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4911 while(ioa_cfg->in_reset_reload) { 4912 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4913 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4914 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4915 } 4916 4917 if (!ioa_cfg->allow_cmds) 4918 goto out_unlock; 4919 4920 rc = ipr_device_reset(ioa_cfg, res); 4921 4922 if (rc) { 4923 ap->ops->port_disable(ap); 4924 goto out_unlock; 4925 } 4926 4927 switch(res->cfgte.proto) { 4928 case IPR_PROTO_SATA: 4929 case IPR_PROTO_SAS_STP: 4930 ap->device[0].class = ATA_DEV_ATA; 4931 break; 4932 case IPR_PROTO_SATA_ATAPI: 4933 case IPR_PROTO_SAS_STP_ATAPI: 4934 ap->device[0].class = ATA_DEV_ATAPI; 4935 break; 4936 default: 4937 ap->device[0].class = ATA_DEV_UNKNOWN; 4938 ap->ops->port_disable(ap); 4939 break; 4940 }; 4941 4942out_unlock: 4943 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4944 LEAVE; 4945} 4946 4947/** 4948 * ipr_ata_post_internal - Cleanup after an internal command 4949 * @qc: ATA queued command 4950 * 4951 * Return value: 4952 * none 4953 **/ 4954static void ipr_ata_post_internal(struct ata_queued_cmd *qc) 4955{ 4956 struct ipr_sata_port *sata_port = qc->ap->private_data; 4957 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 4958 struct ipr_cmnd *ipr_cmd; 4959 unsigned long flags; 4960 4961 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4962 while(ioa_cfg->in_reset_reload) { 4963 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4964 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4965 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4966 } 4967 4968 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4969 if (ipr_cmd->qc == qc) { 4970 ipr_device_reset(ioa_cfg, sata_port->res); 4971 break; 4972 } 4973 } 4974 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4975} 4976 4977/** 4978 * ipr_tf_read - Read the current ATA taskfile for the ATA port 4979 * @ap: ATA port 4980 * @tf: destination ATA taskfile 4981 * 4982 * Return value: 4983 * none 4984 **/ 4985static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf) 4986{ 4987 struct ipr_sata_port *sata_port = ap->private_data; 4988 struct ipr_ioasa_gata *g = &sata_port->ioasa; 4989 4990 tf->feature = g->error; 4991 tf->nsect = g->nsect; 4992 tf->lbal = g->lbal; 4993 tf->lbam = g->lbam; 4994 tf->lbah = g->lbah; 4995 tf->device = g->device; 4996 tf->command = g->status; 4997 tf->hob_nsect = g->hob_nsect; 4998 tf->hob_lbal = g->hob_lbal; 4999 tf->hob_lbam = g->hob_lbam; 5000 tf->hob_lbah = g->hob_lbah; 5001 tf->ctl = g->alt_status; 5002} 5003 5004/** 5005 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure 5006 * @regs: destination 5007 * @tf: source ATA taskfile 5008 * 5009 * Return value: 5010 * none 5011 **/ 5012static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs, 5013 struct ata_taskfile *tf) 5014{ 5015 regs->feature = tf->feature; 5016 regs->nsect = tf->nsect; 5017 regs->lbal = tf->lbal; 5018 regs->lbam = tf->lbam; 5019 regs->lbah = tf->lbah; 5020 regs->device = tf->device; 5021 regs->command = tf->command; 5022 regs->hob_feature = tf->hob_feature; 5023 regs->hob_nsect = tf->hob_nsect; 5024 regs->hob_lbal = tf->hob_lbal; 5025 regs->hob_lbam = tf->hob_lbam; 5026 regs->hob_lbah = tf->hob_lbah; 5027 regs->ctl = tf->ctl; 5028} 5029 5030/** 5031 * ipr_sata_done - done function for SATA commands 5032 * @ipr_cmd: ipr command struct 5033 * 5034 * This function is invoked by the interrupt handler for 5035 * ops generated by the SCSI mid-layer to SATA devices 5036 * 5037 * Return value: 5038 * none 5039 **/ 5040static void ipr_sata_done(struct ipr_cmnd *ipr_cmd) 5041{ 5042 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5043 struct ata_queued_cmd *qc = ipr_cmd->qc; 5044 struct ipr_sata_port *sata_port = qc->ap->private_data; 5045 struct ipr_resource_entry *res = sata_port->res; 5046 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5047 5048 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata, 5049 sizeof(struct ipr_ioasa_gata)); 5050 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 5051 5052 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET) 5053 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus, 5054 res->cfgte.res_addr.target); 5055 5056 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 5057 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status); 5058 else 5059 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status); 5060 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5061 ata_qc_complete(qc); 5062} 5063 5064/** 5065 * ipr_build_ata_ioadl - Build an ATA scatter/gather list 5066 * @ipr_cmd: ipr command struct 5067 * @qc: ATA queued command 5068 * 5069 **/ 5070static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, 5071 struct ata_queued_cmd *qc) 5072{ 5073 u32 ioadl_flags = 0; 5074 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5075 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5076 int len = qc->nbytes + qc->pad_len; 5077 struct scatterlist *sg; 5078 5079 if (len == 0) 5080 return; 5081 5082 if (qc->dma_dir == DMA_TO_DEVICE) { 5083 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5084 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5085 ioarcb->write_data_transfer_length = cpu_to_be32(len); 5086 ioarcb->write_ioadl_len = 5087 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5088 } else if (qc->dma_dir == DMA_FROM_DEVICE) { 5089 ioadl_flags = IPR_IOADL_FLAGS_READ; 5090 ioarcb->read_data_transfer_length = cpu_to_be32(len); 5091 ioarcb->read_ioadl_len = 5092 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5093 } 5094 5095 ata_for_each_sg(sg, qc) { 5096 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 5097 ioadl->address = cpu_to_be32(sg_dma_address(sg)); 5098 if (ata_sg_is_last(sg, qc)) 5099 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5100 else 5101 ioadl++; 5102 } 5103} 5104 5105/** 5106 * ipr_qc_issue - Issue a SATA qc to a device 5107 * @qc: queued command 5108 * 5109 * Return value: 5110 * 0 if success 5111 **/ 5112static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) 5113{ 5114 struct ata_port *ap = qc->ap; 5115 struct ipr_sata_port *sata_port = ap->private_data; 5116 struct ipr_resource_entry *res = sata_port->res; 5117 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5118 struct ipr_cmnd *ipr_cmd; 5119 struct ipr_ioarcb *ioarcb; 5120 struct ipr_ioarcb_ata_regs *regs; 5121 5122 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead)) 5123 return -EIO; 5124 5125 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5126 ioarcb = &ipr_cmd->ioarcb; 5127 regs = &ioarcb->add_data.u.regs; 5128 5129 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data)); 5130 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs)); 5131 5132 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 5133 ipr_cmd->qc = qc; 5134 ipr_cmd->done = ipr_sata_done; 5135 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 5136 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU; 5137 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 5138 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 5139 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem; 5140 5141 ipr_build_ata_ioadl(ipr_cmd, qc); 5142 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 5143 ipr_copy_sata_tf(regs, &qc->tf); 5144 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN); 5145 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 5146 5147 switch (qc->tf.protocol) { 5148 case ATA_PROT_NODATA: 5149 case ATA_PROT_PIO: 5150 break; 5151 5152 case ATA_PROT_DMA: 5153 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 5154 break; 5155 5156 case ATA_PROT_ATAPI: 5157 case ATA_PROT_ATAPI_NODATA: 5158 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 5159 break; 5160 5161 case ATA_PROT_ATAPI_DMA: 5162 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 5163 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 5164 break; 5165 5166 default: 5167 WARN_ON(1); 5168 return -1; 5169 } 5170 5171 mb(); 5172 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr), 5173 ioa_cfg->regs.ioarrin_reg); 5174 return 0; 5175} 5176 5177/** 5178 * ipr_ata_check_status - Return last ATA status 5179 * @ap: ATA port 5180 * 5181 * Return value: 5182 * ATA status 5183 **/ 5184static u8 ipr_ata_check_status(struct ata_port *ap) 5185{ 5186 struct ipr_sata_port *sata_port = ap->private_data; 5187 return sata_port->ioasa.status; 5188} 5189 5190/** 5191 * ipr_ata_check_altstatus - Return last ATA altstatus 5192 * @ap: ATA port 5193 * 5194 * Return value: 5195 * Alt ATA status 5196 **/ 5197static u8 ipr_ata_check_altstatus(struct ata_port *ap) 5198{ 5199 struct ipr_sata_port *sata_port = ap->private_data; 5200 return sata_port->ioasa.alt_status; 5201} 5202 5203static struct ata_port_operations ipr_sata_ops = { 5204 .port_disable = ata_port_disable, 5205 .check_status = ipr_ata_check_status, 5206 .check_altstatus = ipr_ata_check_altstatus, 5207 .dev_select = ata_noop_dev_select, 5208 .phy_reset = ipr_ata_phy_reset, 5209 .post_internal_cmd = ipr_ata_post_internal, 5210 .tf_read = ipr_tf_read, 5211 .qc_prep = ata_noop_qc_prep, 5212 .qc_issue = ipr_qc_issue, 5213 .port_start = ata_sas_port_start, 5214 .port_stop = ata_sas_port_stop 5215}; 5216 5217static struct ata_port_info sata_port_info = { 5218 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET | 5219 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA, 5220 .pio_mask = 0x10, /* pio4 */ 5221 .mwdma_mask = 0x07, 5222 .udma_mask = 0x7f, /* udma0-6 */ 5223 .port_ops = &ipr_sata_ops 5224}; 5225 5226#ifdef CONFIG_PPC_PSERIES 5227static const u16 ipr_blocked_processors[] = { 5228 PV_NORTHSTAR, 5229 PV_PULSAR, 5230 PV_POWER4, 5231 PV_ICESTAR, 5232 PV_SSTAR, 5233 PV_POWER4p, 5234 PV_630, 5235 PV_630p 5236}; 5237 5238/** 5239 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 5240 * @ioa_cfg: ioa cfg struct 5241 * 5242 * Adapters that use Gemstone revision < 3.1 do not work reliably on 5243 * certain pSeries hardware. This function determines if the given 5244 * adapter is in one of these confgurations or not. 5245 * 5246 * Return value: 5247 * 1 if adapter is not supported / 0 if adapter is supported 5248 **/ 5249static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 5250{ 5251 u8 rev_id; 5252 int i; 5253 5254 if (ioa_cfg->type == 0x5702) { 5255 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID, 5256 &rev_id) == PCIBIOS_SUCCESSFUL) { 5257 if (rev_id < 4) { 5258 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ 5259 if (__is_processor(ipr_blocked_processors[i])) 5260 return 1; 5261 } 5262 } 5263 } 5264 } 5265 return 0; 5266} 5267#else 5268#define ipr_invalid_adapter(ioa_cfg) 0 5269#endif 5270 5271/** 5272 * ipr_ioa_bringdown_done - IOA bring down completion. 5273 * @ipr_cmd: ipr command struct 5274 * 5275 * This function processes the completion of an adapter bring down. 5276 * It wakes any reset sleepers. 5277 * 5278 * Return value: 5279 * IPR_RC_JOB_RETURN 5280 **/ 5281static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 5282{ 5283 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5284 5285 ENTER; 5286 ioa_cfg->in_reset_reload = 0; 5287 ioa_cfg->reset_retries = 0; 5288 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5289 wake_up_all(&ioa_cfg->reset_wait_q); 5290 5291 spin_unlock_irq(ioa_cfg->host->host_lock); 5292 scsi_unblock_requests(ioa_cfg->host); 5293 spin_lock_irq(ioa_cfg->host->host_lock); 5294 LEAVE; 5295 5296 return IPR_RC_JOB_RETURN; 5297} 5298 5299/** 5300 * ipr_ioa_reset_done - IOA reset completion. 5301 * @ipr_cmd: ipr command struct 5302 * 5303 * This function processes the completion of an adapter reset. 5304 * It schedules any necessary mid-layer add/removes and 5305 * wakes any reset sleepers. 5306 * 5307 * Return value: 5308 * IPR_RC_JOB_RETURN 5309 **/ 5310static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 5311{ 5312 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5313 struct ipr_resource_entry *res; 5314 struct ipr_hostrcb *hostrcb, *temp; 5315 int i = 0; 5316 5317 ENTER; 5318 ioa_cfg->in_reset_reload = 0; 5319 ioa_cfg->allow_cmds = 1; 5320 ioa_cfg->reset_cmd = NULL; 5321 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 5322 5323 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 5324 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { 5325 ipr_trace; 5326 break; 5327 } 5328 } 5329 schedule_work(&ioa_cfg->work_q); 5330 5331 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { 5332 list_del(&hostrcb->queue); 5333 if (i++ < IPR_NUM_LOG_HCAMS) 5334 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 5335 else 5336 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 5337 } 5338 5339 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 5340 5341 ioa_cfg->reset_retries = 0; 5342 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5343 wake_up_all(&ioa_cfg->reset_wait_q); 5344 5345 spin_unlock_irq(ioa_cfg->host->host_lock); 5346 scsi_unblock_requests(ioa_cfg->host); 5347 spin_lock_irq(ioa_cfg->host->host_lock); 5348 5349 if (!ioa_cfg->allow_cmds) 5350 scsi_block_requests(ioa_cfg->host); 5351 5352 LEAVE; 5353 return IPR_RC_JOB_RETURN; 5354} 5355 5356/** 5357 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 5358 * @supported_dev: supported device struct 5359 * @vpids: vendor product id struct 5360 * 5361 * Return value: 5362 * none 5363 **/ 5364static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 5365 struct ipr_std_inq_vpids *vpids) 5366{ 5367 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 5368 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 5369 supported_dev->num_records = 1; 5370 supported_dev->data_length = 5371 cpu_to_be16(sizeof(struct ipr_supported_device)); 5372 supported_dev->reserved = 0; 5373} 5374 5375/** 5376 * ipr_set_supported_devs - Send Set Supported Devices for a device 5377 * @ipr_cmd: ipr command struct 5378 * 5379 * This function send a Set Supported Devices to the adapter 5380 * 5381 * Return value: 5382 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5383 **/ 5384static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 5385{ 5386 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5387 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 5388 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5389 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5390 struct ipr_resource_entry *res = ipr_cmd->u.res; 5391 5392 ipr_cmd->job_step = ipr_ioa_reset_done; 5393 5394 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 5395 if (!ipr_is_scsi_disk(res)) 5396 continue; 5397 5398 ipr_cmd->u.res = res; 5399 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids); 5400 5401 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5402 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5403 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5404 5405 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 5406 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 5407 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 5408 5409 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | 5410 sizeof(struct ipr_supported_device)); 5411 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma + 5412 offsetof(struct ipr_misc_cbs, supp_dev)); 5413 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5414 ioarcb->write_data_transfer_length = 5415 cpu_to_be32(sizeof(struct ipr_supported_device)); 5416 5417 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 5418 IPR_SET_SUP_DEVICE_TIMEOUT); 5419 5420 ipr_cmd->job_step = ipr_set_supported_devs; 5421 return IPR_RC_JOB_RETURN; 5422 } 5423 5424 return IPR_RC_JOB_CONTINUE; 5425} 5426 5427/** 5428 * ipr_setup_write_cache - Disable write cache if needed 5429 * @ipr_cmd: ipr command struct 5430 * 5431 * This function sets up adapters write cache to desired setting 5432 * 5433 * Return value: 5434 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5435 **/ 5436static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd) 5437{ 5438 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5439 5440 ipr_cmd->job_step = ipr_set_supported_devs; 5441 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 5442 struct ipr_resource_entry, queue); 5443 5444 if (ioa_cfg->cache_state != CACHE_DISABLED) 5445 return IPR_RC_JOB_CONTINUE; 5446 5447 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5448 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5449 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 5450 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 5451 5452 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5453 5454 return IPR_RC_JOB_RETURN; 5455} 5456 5457/** 5458 * ipr_get_mode_page - Locate specified mode page 5459 * @mode_pages: mode page buffer 5460 * @page_code: page code to find 5461 * @len: minimum required length for mode page 5462 * 5463 * Return value: 5464 * pointer to mode page / NULL on failure 5465 **/ 5466static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 5467 u32 page_code, u32 len) 5468{ 5469 struct ipr_mode_page_hdr *mode_hdr; 5470 u32 page_length; 5471 u32 length; 5472 5473 if (!mode_pages || (mode_pages->hdr.length == 0)) 5474 return NULL; 5475 5476 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 5477 mode_hdr = (struct ipr_mode_page_hdr *) 5478 (mode_pages->data + mode_pages->hdr.block_desc_len); 5479 5480 while (length) { 5481 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 5482 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 5483 return mode_hdr; 5484 break; 5485 } else { 5486 page_length = (sizeof(struct ipr_mode_page_hdr) + 5487 mode_hdr->page_length); 5488 length -= page_length; 5489 mode_hdr = (struct ipr_mode_page_hdr *) 5490 ((unsigned long)mode_hdr + page_length); 5491 } 5492 } 5493 return NULL; 5494} 5495 5496/** 5497 * ipr_check_term_power - Check for term power errors 5498 * @ioa_cfg: ioa config struct 5499 * @mode_pages: IOAFP mode pages buffer 5500 * 5501 * Check the IOAFP's mode page 28 for term power errors 5502 * 5503 * Return value: 5504 * nothing 5505 **/ 5506static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 5507 struct ipr_mode_pages *mode_pages) 5508{ 5509 int i; 5510 int entry_length; 5511 struct ipr_dev_bus_entry *bus; 5512 struct ipr_mode_page28 *mode_page; 5513 5514 mode_page = ipr_get_mode_page(mode_pages, 0x28, 5515 sizeof(struct ipr_mode_page28)); 5516 5517 entry_length = mode_page->entry_length; 5518 5519 bus = mode_page->bus; 5520 5521 for (i = 0; i < mode_page->num_entries; i++) { 5522 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 5523 dev_err(&ioa_cfg->pdev->dev, 5524 "Term power is absent on scsi bus %d\n", 5525 bus->res_addr.bus); 5526 } 5527 5528 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 5529 } 5530} 5531 5532/** 5533 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 5534 * @ioa_cfg: ioa config struct 5535 * 5536 * Looks through the config table checking for SES devices. If 5537 * the SES device is in the SES table indicating a maximum SCSI 5538 * bus speed, the speed is limited for the bus. 5539 * 5540 * Return value: 5541 * none 5542 **/ 5543static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 5544{ 5545 u32 max_xfer_rate; 5546 int i; 5547 5548 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 5549 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 5550 ioa_cfg->bus_attr[i].bus_width); 5551 5552 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 5553 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 5554 } 5555} 5556 5557/** 5558 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 5559 * @ioa_cfg: ioa config struct 5560 * @mode_pages: mode page 28 buffer 5561 * 5562 * Updates mode page 28 based on driver configuration 5563 * 5564 * Return value: 5565 * none 5566 **/ 5567static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 5568 struct ipr_mode_pages *mode_pages) 5569{ 5570 int i, entry_length; 5571 struct ipr_dev_bus_entry *bus; 5572 struct ipr_bus_attributes *bus_attr; 5573 struct ipr_mode_page28 *mode_page; 5574 5575 mode_page = ipr_get_mode_page(mode_pages, 0x28, 5576 sizeof(struct ipr_mode_page28)); 5577 5578 entry_length = mode_page->entry_length; 5579 5580 /* Loop for each device bus entry */ 5581 for (i = 0, bus = mode_page->bus; 5582 i < mode_page->num_entries; 5583 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 5584 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 5585 dev_err(&ioa_cfg->pdev->dev, 5586 "Invalid resource address reported: 0x%08X\n", 5587 IPR_GET_PHYS_LOC(bus->res_addr)); 5588 continue; 5589 } 5590 5591 bus_attr = &ioa_cfg->bus_attr[i]; 5592 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 5593 bus->bus_width = bus_attr->bus_width; 5594 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 5595 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 5596 if (bus_attr->qas_enabled) 5597 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 5598 else 5599 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 5600 } 5601} 5602 5603/** 5604 * ipr_build_mode_select - Build a mode select command 5605 * @ipr_cmd: ipr command struct 5606 * @res_handle: resource handle to send command to 5607 * @parm: Byte 2 of Mode Sense command 5608 * @dma_addr: DMA buffer address 5609 * @xfer_len: data transfer length 5610 * 5611 * Return value: 5612 * none 5613 **/ 5614static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 5615 __be32 res_handle, u8 parm, u32 dma_addr, 5616 u8 xfer_len) 5617{ 5618 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5619 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5620 5621 ioarcb->res_handle = res_handle; 5622 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5623 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5624 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 5625 ioarcb->cmd_pkt.cdb[1] = parm; 5626 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5627 5628 ioadl->flags_and_data_len = 5629 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len); 5630 ioadl->address = cpu_to_be32(dma_addr); 5631 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5632 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len); 5633} 5634 5635/** 5636 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 5637 * @ipr_cmd: ipr command struct 5638 * 5639 * This function sets up the SCSI bus attributes and sends 5640 * a Mode Select for Page 28 to activate them. 5641 * 5642 * Return value: 5643 * IPR_RC_JOB_RETURN 5644 **/ 5645static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 5646{ 5647 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5648 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 5649 int length; 5650 5651 ENTER; 5652 ipr_scsi_bus_speed_limit(ioa_cfg); 5653 ipr_check_term_power(ioa_cfg, mode_pages); 5654 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 5655 length = mode_pages->hdr.length + 1; 5656 mode_pages->hdr.length = 0; 5657 5658 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 5659 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 5660 length); 5661 5662 ipr_cmd->job_step = ipr_setup_write_cache; 5663 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5664 5665 LEAVE; 5666 return IPR_RC_JOB_RETURN; 5667} 5668 5669/** 5670 * ipr_build_mode_sense - Builds a mode sense command 5671 * @ipr_cmd: ipr command struct 5672 * @res: resource entry struct 5673 * @parm: Byte 2 of mode sense command 5674 * @dma_addr: DMA address of mode sense buffer 5675 * @xfer_len: Size of DMA buffer 5676 * 5677 * Return value: 5678 * none 5679 **/ 5680static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 5681 __be32 res_handle, 5682 u8 parm, u32 dma_addr, u8 xfer_len) 5683{ 5684 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5685 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5686 5687 ioarcb->res_handle = res_handle; 5688 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 5689 ioarcb->cmd_pkt.cdb[2] = parm; 5690 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5691 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5692 5693 ioadl->flags_and_data_len = 5694 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 5695 ioadl->address = cpu_to_be32(dma_addr); 5696 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5697 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 5698} 5699 5700/** 5701 * ipr_reset_cmd_failed - Handle failure of IOA reset command 5702 * @ipr_cmd: ipr command struct 5703 * 5704 * This function handles the failure of an IOA bringup command. 5705 * 5706 * Return value: 5707 * IPR_RC_JOB_RETURN 5708 **/ 5709static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 5710{ 5711 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5712 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5713 5714 dev_err(&ioa_cfg->pdev->dev, 5715 "0x%02X failed with IOASC: 0x%08X\n", 5716 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 5717 5718 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5719 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5720 return IPR_RC_JOB_RETURN; 5721} 5722 5723/** 5724 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 5725 * @ipr_cmd: ipr command struct 5726 * 5727 * This function handles the failure of a Mode Sense to the IOAFP. 5728 * Some adapters do not handle all mode pages. 5729 * 5730 * Return value: 5731 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5732 **/ 5733static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 5734{ 5735 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5736 5737 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 5738 ipr_cmd->job_step = ipr_setup_write_cache; 5739 return IPR_RC_JOB_CONTINUE; 5740 } 5741 5742 return ipr_reset_cmd_failed(ipr_cmd); 5743} 5744 5745/** 5746 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 5747 * @ipr_cmd: ipr command struct 5748 * 5749 * This function send a Page 28 mode sense to the IOA to 5750 * retrieve SCSI bus attributes. 5751 * 5752 * Return value: 5753 * IPR_RC_JOB_RETURN 5754 **/ 5755static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 5756{ 5757 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5758 5759 ENTER; 5760 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 5761 0x28, ioa_cfg->vpd_cbs_dma + 5762 offsetof(struct ipr_misc_cbs, mode_pages), 5763 sizeof(struct ipr_mode_pages)); 5764 5765 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 5766 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 5767 5768 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5769 5770 LEAVE; 5771 return IPR_RC_JOB_RETURN; 5772} 5773 5774/** 5775 * ipr_init_res_table - Initialize the resource table 5776 * @ipr_cmd: ipr command struct 5777 * 5778 * This function looks through the existing resource table, comparing 5779 * it with the config table. This function will take care of old/new 5780 * devices and schedule adding/removing them from the mid-layer 5781 * as appropriate. 5782 * 5783 * Return value: 5784 * IPR_RC_JOB_CONTINUE 5785 **/ 5786static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 5787{ 5788 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5789 struct ipr_resource_entry *res, *temp; 5790 struct ipr_config_table_entry *cfgte; 5791 int found, i; 5792 LIST_HEAD(old_res); 5793 5794 ENTER; 5795 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ) 5796 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 5797 5798 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 5799 list_move_tail(&res->queue, &old_res); 5800 5801 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) { 5802 cfgte = &ioa_cfg->cfg_table->dev[i]; 5803 found = 0; 5804 5805 list_for_each_entry_safe(res, temp, &old_res, queue) { 5806 if (!memcmp(&res->cfgte.res_addr, 5807 &cfgte->res_addr, sizeof(cfgte->res_addr))) { 5808 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5809 found = 1; 5810 break; 5811 } 5812 } 5813 5814 if (!found) { 5815 if (list_empty(&ioa_cfg->free_res_q)) { 5816 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 5817 break; 5818 } 5819 5820 found = 1; 5821 res = list_entry(ioa_cfg->free_res_q.next, 5822 struct ipr_resource_entry, queue); 5823 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5824 ipr_init_res_entry(res); 5825 res->add_to_ml = 1; 5826 } 5827 5828 if (found) 5829 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 5830 } 5831 5832 list_for_each_entry_safe(res, temp, &old_res, queue) { 5833 if (res->sdev) { 5834 res->del_from_ml = 1; 5835 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE; 5836 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5837 } else { 5838 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 5839 } 5840 } 5841 5842 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 5843 5844 LEAVE; 5845 return IPR_RC_JOB_CONTINUE; 5846} 5847 5848/** 5849 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 5850 * @ipr_cmd: ipr command struct 5851 * 5852 * This function sends a Query IOA Configuration command 5853 * to the adapter to retrieve the IOA configuration table. 5854 * 5855 * Return value: 5856 * IPR_RC_JOB_RETURN 5857 **/ 5858static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 5859{ 5860 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5861 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5862 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5863 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 5864 5865 ENTER; 5866 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 5867 ucode_vpd->major_release, ucode_vpd->card_type, 5868 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 5869 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5870 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5871 5872 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 5873 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff; 5874 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff; 5875 5876 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5877 ioarcb->read_data_transfer_length = 5878 cpu_to_be32(sizeof(struct ipr_config_table)); 5879 5880 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma); 5881 ioadl->flags_and_data_len = 5882 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table)); 5883 5884 ipr_cmd->job_step = ipr_init_res_table; 5885 5886 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5887 5888 LEAVE; 5889 return IPR_RC_JOB_RETURN; 5890} 5891 5892/** 5893 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 5894 * @ipr_cmd: ipr command struct 5895 * 5896 * This utility function sends an inquiry to the adapter. 5897 * 5898 * Return value: 5899 * none 5900 **/ 5901static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 5902 u32 dma_addr, u8 xfer_len) 5903{ 5904 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5905 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5906 5907 ENTER; 5908 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5909 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5910 5911 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 5912 ioarcb->cmd_pkt.cdb[1] = flags; 5913 ioarcb->cmd_pkt.cdb[2] = page; 5914 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5915 5916 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5917 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 5918 5919 ioadl->address = cpu_to_be32(dma_addr); 5920 ioadl->flags_and_data_len = 5921 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 5922 5923 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5924 LEAVE; 5925} 5926 5927/** 5928 * ipr_inquiry_page_supported - Is the given inquiry page supported 5929 * @page0: inquiry page 0 buffer 5930 * @page: page code. 5931 * 5932 * This function determines if the specified inquiry page is supported. 5933 * 5934 * Return value: 5935 * 1 if page is supported / 0 if not 5936 **/ 5937static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 5938{ 5939 int i; 5940 5941 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 5942 if (page0->page[i] == page) 5943 return 1; 5944 5945 return 0; 5946} 5947 5948/** 5949 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 5950 * @ipr_cmd: ipr command struct 5951 * 5952 * This function sends a Page 3 inquiry to the adapter 5953 * to retrieve software VPD information. 5954 * 5955 * Return value: 5956 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5957 **/ 5958static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 5959{ 5960 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5961 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 5962 5963 ENTER; 5964 5965 if (!ipr_inquiry_page_supported(page0, 1)) 5966 ioa_cfg->cache_state = CACHE_NONE; 5967 5968 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 5969 5970 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 5971 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 5972 sizeof(struct ipr_inquiry_page3)); 5973 5974 LEAVE; 5975 return IPR_RC_JOB_RETURN; 5976} 5977 5978/** 5979 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 5980 * @ipr_cmd: ipr command struct 5981 * 5982 * This function sends a Page 0 inquiry to the adapter 5983 * to retrieve supported inquiry pages. 5984 * 5985 * Return value: 5986 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5987 **/ 5988static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 5989{ 5990 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5991 char type[5]; 5992 5993 ENTER; 5994 5995 /* Grab the type out of the VPD and store it away */ 5996 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 5997 type[4] = '\0'; 5998 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 5999 6000 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 6001 6002 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 6003 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 6004 sizeof(struct ipr_inquiry_page0)); 6005 6006 LEAVE; 6007 return IPR_RC_JOB_RETURN; 6008} 6009 6010/** 6011 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 6012 * @ipr_cmd: ipr command struct 6013 * 6014 * This function sends a standard inquiry to the adapter. 6015 * 6016 * Return value: 6017 * IPR_RC_JOB_RETURN 6018 **/ 6019static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 6020{ 6021 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6022 6023 ENTER; 6024 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 6025 6026 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 6027 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 6028 sizeof(struct ipr_ioa_vpd)); 6029 6030 LEAVE; 6031 return IPR_RC_JOB_RETURN; 6032} 6033 6034/** 6035 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ. 6036 * @ipr_cmd: ipr command struct 6037 * 6038 * This function send an Identify Host Request Response Queue 6039 * command to establish the HRRQ with the adapter. 6040 * 6041 * Return value: 6042 * IPR_RC_JOB_RETURN 6043 **/ 6044static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd) 6045{ 6046 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6047 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6048 6049 ENTER; 6050 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 6051 6052 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 6053 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6054 6055 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6056 ioarcb->cmd_pkt.cdb[2] = 6057 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff; 6058 ioarcb->cmd_pkt.cdb[3] = 6059 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff; 6060 ioarcb->cmd_pkt.cdb[4] = 6061 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff; 6062 ioarcb->cmd_pkt.cdb[5] = 6063 ((u32) ioa_cfg->host_rrq_dma) & 0xff; 6064 ioarcb->cmd_pkt.cdb[7] = 6065 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; 6066 ioarcb->cmd_pkt.cdb[8] = 6067 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; 6068 6069 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 6070 6071 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6072 6073 LEAVE; 6074 return IPR_RC_JOB_RETURN; 6075} 6076 6077/** 6078 * ipr_reset_timer_done - Adapter reset timer function 6079 * @ipr_cmd: ipr command struct 6080 * 6081 * Description: This function is used in adapter reset processing 6082 * for timing events. If the reset_cmd pointer in the IOA 6083 * config struct is not this adapter's we are doing nested 6084 * resets and fail_all_ops will take care of freeing the 6085 * command block. 6086 * 6087 * Return value: 6088 * none 6089 **/ 6090static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 6091{ 6092 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6093 unsigned long lock_flags = 0; 6094 6095 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6096 6097 if (ioa_cfg->reset_cmd == ipr_cmd) { 6098 list_del(&ipr_cmd->queue); 6099 ipr_cmd->done(ipr_cmd); 6100 } 6101 6102 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6103} 6104 6105/** 6106 * ipr_reset_start_timer - Start a timer for adapter reset job 6107 * @ipr_cmd: ipr command struct 6108 * @timeout: timeout value 6109 * 6110 * Description: This function is used in adapter reset processing 6111 * for timing events. If the reset_cmd pointer in the IOA 6112 * config struct is not this adapter's we are doing nested 6113 * resets and fail_all_ops will take care of freeing the 6114 * command block. 6115 * 6116 * Return value: 6117 * none 6118 **/ 6119static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 6120 unsigned long timeout) 6121{ 6122 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 6123 ipr_cmd->done = ipr_reset_ioa_job; 6124 6125 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 6126 ipr_cmd->timer.expires = jiffies + timeout; 6127 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 6128 add_timer(&ipr_cmd->timer); 6129} 6130 6131/** 6132 * ipr_init_ioa_mem - Initialize ioa_cfg control block 6133 * @ioa_cfg: ioa cfg struct 6134 * 6135 * Return value: 6136 * nothing 6137 **/ 6138static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 6139{ 6140 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); 6141 6142 /* Initialize Host RRQ pointers */ 6143 ioa_cfg->hrrq_start = ioa_cfg->host_rrq; 6144 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; 6145 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 6146 ioa_cfg->toggle_bit = 1; 6147 6148 /* Zero out config table */ 6149 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table)); 6150} 6151 6152/** 6153 * ipr_reset_enable_ioa - Enable the IOA following a reset. 6154 * @ipr_cmd: ipr command struct 6155 * 6156 * This function reinitializes some control blocks and 6157 * enables destructive diagnostics on the adapter. 6158 * 6159 * Return value: 6160 * IPR_RC_JOB_RETURN 6161 **/ 6162static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 6163{ 6164 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6165 volatile u32 int_reg; 6166 6167 ENTER; 6168 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq; 6169 ipr_init_ioa_mem(ioa_cfg); 6170 6171 ioa_cfg->allow_interrupts = 1; 6172 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 6173 6174 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 6175 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 6176 ioa_cfg->regs.clr_interrupt_mask_reg); 6177 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 6178 return IPR_RC_JOB_CONTINUE; 6179 } 6180 6181 /* Enable destructive diagnostics on IOA */ 6182 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg); 6183 6184 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg); 6185 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 6186 6187 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 6188 6189 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 6190 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ); 6191 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 6192 ipr_cmd->done = ipr_reset_ioa_job; 6193 add_timer(&ipr_cmd->timer); 6194 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 6195 6196 LEAVE; 6197 return IPR_RC_JOB_RETURN; 6198} 6199 6200/** 6201 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 6202 * @ipr_cmd: ipr command struct 6203 * 6204 * This function is invoked when an adapter dump has run out 6205 * of processing time. 6206 * 6207 * Return value: 6208 * IPR_RC_JOB_CONTINUE 6209 **/ 6210static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 6211{ 6212 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6213 6214 if (ioa_cfg->sdt_state == GET_DUMP) 6215 ioa_cfg->sdt_state = ABORT_DUMP; 6216 6217 ipr_cmd->job_step = ipr_reset_alert; 6218 6219 return IPR_RC_JOB_CONTINUE; 6220} 6221 6222/** 6223 * ipr_unit_check_no_data - Log a unit check/no data error log 6224 * @ioa_cfg: ioa config struct 6225 * 6226 * Logs an error indicating the adapter unit checked, but for some 6227 * reason, we were unable to fetch the unit check buffer. 6228 * 6229 * Return value: 6230 * nothing 6231 **/ 6232static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 6233{ 6234 ioa_cfg->errors_logged++; 6235 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 6236} 6237 6238/** 6239 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 6240 * @ioa_cfg: ioa config struct 6241 * 6242 * Fetches the unit check buffer from the adapter by clocking the data 6243 * through the mailbox register. 6244 * 6245 * Return value: 6246 * nothing 6247 **/ 6248static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 6249{ 6250 unsigned long mailbox; 6251 struct ipr_hostrcb *hostrcb; 6252 struct ipr_uc_sdt sdt; 6253 int rc, length; 6254 6255 mailbox = readl(ioa_cfg->ioa_mailbox); 6256 6257 if (!ipr_sdt_is_fmt2(mailbox)) { 6258 ipr_unit_check_no_data(ioa_cfg); 6259 return; 6260 } 6261 6262 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 6263 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 6264 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 6265 6266 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) || 6267 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) { 6268 ipr_unit_check_no_data(ioa_cfg); 6269 return; 6270 } 6271 6272 /* Find length of the first sdt entry (UC buffer) */ 6273 length = (be32_to_cpu(sdt.entry[0].end_offset) - 6274 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK; 6275 6276 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 6277 struct ipr_hostrcb, queue); 6278 list_del(&hostrcb->queue); 6279 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 6280 6281 rc = ipr_get_ldump_data_section(ioa_cfg, 6282 be32_to_cpu(sdt.entry[0].bar_str_offset), 6283 (__be32 *)&hostrcb->hcam, 6284 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 6285 6286 if (!rc) 6287 ipr_handle_log_data(ioa_cfg, hostrcb); 6288 else 6289 ipr_unit_check_no_data(ioa_cfg); 6290 6291 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 6292} 6293 6294/** 6295 * ipr_reset_restore_cfg_space - Restore PCI config space. 6296 * @ipr_cmd: ipr command struct 6297 * 6298 * Description: This function restores the saved PCI config space of 6299 * the adapter, fails all outstanding ops back to the callers, and 6300 * fetches the dump/unit check if applicable to this reset. 6301 * 6302 * Return value: 6303 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6304 **/ 6305static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 6306{ 6307 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6308 int rc; 6309 6310 ENTER; 6311 rc = pci_restore_state(ioa_cfg->pdev); 6312 6313 if (rc != PCIBIOS_SUCCESSFUL) { 6314 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6315 return IPR_RC_JOB_CONTINUE; 6316 } 6317 6318 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 6319 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6320 return IPR_RC_JOB_CONTINUE; 6321 } 6322 6323 ipr_fail_all_ops(ioa_cfg); 6324 6325 if (ioa_cfg->ioa_unit_checked) { 6326 ioa_cfg->ioa_unit_checked = 0; 6327 ipr_get_unit_check_buffer(ioa_cfg); 6328 ipr_cmd->job_step = ipr_reset_alert; 6329 ipr_reset_start_timer(ipr_cmd, 0); 6330 return IPR_RC_JOB_RETURN; 6331 } 6332 6333 if (ioa_cfg->in_ioa_bringdown) { 6334 ipr_cmd->job_step = ipr_ioa_bringdown_done; 6335 } else { 6336 ipr_cmd->job_step = ipr_reset_enable_ioa; 6337 6338 if (GET_DUMP == ioa_cfg->sdt_state) { 6339 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); 6340 ipr_cmd->job_step = ipr_reset_wait_for_dump; 6341 schedule_work(&ioa_cfg->work_q); 6342 return IPR_RC_JOB_RETURN; 6343 } 6344 } 6345 6346 ENTER; 6347 return IPR_RC_JOB_CONTINUE; 6348} 6349 6350/** 6351 * ipr_reset_bist_done - BIST has completed on the adapter. 6352 * @ipr_cmd: ipr command struct 6353 * 6354 * Description: Unblock config space and resume the reset process. 6355 * 6356 * Return value: 6357 * IPR_RC_JOB_CONTINUE 6358 **/ 6359static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd) 6360{ 6361 ENTER; 6362 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 6363 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 6364 LEAVE; 6365 return IPR_RC_JOB_CONTINUE; 6366} 6367 6368/** 6369 * ipr_reset_start_bist - Run BIST on the adapter. 6370 * @ipr_cmd: ipr command struct 6371 * 6372 * Description: This function runs BIST on the adapter, then delays 2 seconds. 6373 * 6374 * Return value: 6375 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6376 **/ 6377static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 6378{ 6379 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6380 int rc; 6381 6382 ENTER; 6383 pci_block_user_cfg_access(ioa_cfg->pdev); 6384 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 6385 6386 if (rc != PCIBIOS_SUCCESSFUL) { 6387 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6388 rc = IPR_RC_JOB_CONTINUE; 6389 } else { 6390 ipr_cmd->job_step = ipr_reset_bist_done; 6391 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 6392 rc = IPR_RC_JOB_RETURN; 6393 } 6394 6395 LEAVE; 6396 return rc; 6397} 6398 6399/** 6400 * ipr_reset_allowed - Query whether or not IOA can be reset 6401 * @ioa_cfg: ioa config struct 6402 * 6403 * Return value: 6404 * 0 if reset not allowed / non-zero if reset is allowed 6405 **/ 6406static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 6407{ 6408 volatile u32 temp_reg; 6409 6410 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 6411 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 6412} 6413 6414/** 6415 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 6416 * @ipr_cmd: ipr command struct 6417 * 6418 * Description: This function waits for adapter permission to run BIST, 6419 * then runs BIST. If the adapter does not give permission after a 6420 * reasonable time, we will reset the adapter anyway. The impact of 6421 * resetting the adapter without warning the adapter is the risk of 6422 * losing the persistent error log on the adapter. If the adapter is 6423 * reset while it is writing to the flash on the adapter, the flash 6424 * segment will have bad ECC and be zeroed. 6425 * 6426 * Return value: 6427 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6428 **/ 6429static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 6430{ 6431 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6432 int rc = IPR_RC_JOB_RETURN; 6433 6434 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 6435 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 6436 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 6437 } else { 6438 ipr_cmd->job_step = ipr_reset_start_bist; 6439 rc = IPR_RC_JOB_CONTINUE; 6440 } 6441 6442 return rc; 6443} 6444 6445/** 6446 * ipr_reset_alert_part2 - Alert the adapter of a pending reset 6447 * @ipr_cmd: ipr command struct 6448 * 6449 * Description: This function alerts the adapter that it will be reset. 6450 * If memory space is not currently enabled, proceed directly 6451 * to running BIST on the adapter. The timer must always be started 6452 * so we guarantee we do not run BIST from ipr_isr. 6453 * 6454 * Return value: 6455 * IPR_RC_JOB_RETURN 6456 **/ 6457static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 6458{ 6459 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6460 u16 cmd_reg; 6461 int rc; 6462 6463 ENTER; 6464 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 6465 6466 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 6467 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 6468 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg); 6469 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 6470 } else { 6471 ipr_cmd->job_step = ipr_reset_start_bist; 6472 } 6473 6474 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 6475 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 6476 6477 LEAVE; 6478 return IPR_RC_JOB_RETURN; 6479} 6480 6481/** 6482 * ipr_reset_ucode_download_done - Microcode download completion 6483 * @ipr_cmd: ipr command struct 6484 * 6485 * Description: This function unmaps the microcode download buffer. 6486 * 6487 * Return value: 6488 * IPR_RC_JOB_CONTINUE 6489 **/ 6490static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 6491{ 6492 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6493 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 6494 6495 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, 6496 sglist->num_sg, DMA_TO_DEVICE); 6497 6498 ipr_cmd->job_step = ipr_reset_alert; 6499 return IPR_RC_JOB_CONTINUE; 6500} 6501 6502/** 6503 * ipr_reset_ucode_download - Download microcode to the adapter 6504 * @ipr_cmd: ipr command struct 6505 * 6506 * Description: This function checks to see if it there is microcode 6507 * to download to the adapter. If there is, a download is performed. 6508 * 6509 * Return value: 6510 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6511 **/ 6512static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 6513{ 6514 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6515 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 6516 6517 ENTER; 6518 ipr_cmd->job_step = ipr_reset_alert; 6519 6520 if (!sglist) 6521 return IPR_RC_JOB_CONTINUE; 6522 6523 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6524 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6525 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 6526 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 6527 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 6528 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 6529 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 6530 6531 ipr_build_ucode_ioadl(ipr_cmd, sglist); 6532 ipr_cmd->job_step = ipr_reset_ucode_download_done; 6533 6534 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 6535 IPR_WRITE_BUFFER_TIMEOUT); 6536 6537 LEAVE; 6538 return IPR_RC_JOB_RETURN; 6539} 6540 6541/** 6542 * ipr_reset_shutdown_ioa - Shutdown the adapter 6543 * @ipr_cmd: ipr command struct 6544 * 6545 * Description: This function issues an adapter shutdown of the 6546 * specified type to the specified adapter as part of the 6547 * adapter reset job. 6548 * 6549 * Return value: 6550 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6551 **/ 6552static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 6553{ 6554 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6555 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 6556 unsigned long timeout; 6557 int rc = IPR_RC_JOB_CONTINUE; 6558 6559 ENTER; 6560 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { 6561 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6562 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6563 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 6564 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 6565 6566 if (shutdown_type == IPR_SHUTDOWN_ABBREV) 6567 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 6568 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 6569 timeout = IPR_INTERNAL_TIMEOUT; 6570 else 6571 timeout = IPR_SHUTDOWN_TIMEOUT; 6572 6573 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 6574 6575 rc = IPR_RC_JOB_RETURN; 6576 ipr_cmd->job_step = ipr_reset_ucode_download; 6577 } else 6578 ipr_cmd->job_step = ipr_reset_alert; 6579 6580 LEAVE; 6581 return rc; 6582} 6583 6584/** 6585 * ipr_reset_ioa_job - Adapter reset job 6586 * @ipr_cmd: ipr command struct 6587 * 6588 * Description: This function is the job router for the adapter reset job. 6589 * 6590 * Return value: 6591 * none 6592 **/ 6593static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 6594{ 6595 u32 rc, ioasc; 6596 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6597 6598 do { 6599 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 6600 6601 if (ioa_cfg->reset_cmd != ipr_cmd) { 6602 /* 6603 * We are doing nested adapter resets and this is 6604 * not the current reset job. 6605 */ 6606 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6607 return; 6608 } 6609 6610 if (IPR_IOASC_SENSE_KEY(ioasc)) { 6611 rc = ipr_cmd->job_step_failed(ipr_cmd); 6612 if (rc == IPR_RC_JOB_RETURN) 6613 return; 6614 } 6615 6616 ipr_reinit_ipr_cmnd(ipr_cmd); 6617 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 6618 rc = ipr_cmd->job_step(ipr_cmd); 6619 } while(rc == IPR_RC_JOB_CONTINUE); 6620} 6621 6622/** 6623 * _ipr_initiate_ioa_reset - Initiate an adapter reset 6624 * @ioa_cfg: ioa config struct 6625 * @job_step: first job step of reset job 6626 * @shutdown_type: shutdown type 6627 * 6628 * Description: This function will initiate the reset of the given adapter 6629 * starting at the selected job step. 6630 * If the caller needs to wait on the completion of the reset, 6631 * the caller must sleep on the reset_wait_q. 6632 * 6633 * Return value: 6634 * none 6635 **/ 6636static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 6637 int (*job_step) (struct ipr_cmnd *), 6638 enum ipr_shutdown_type shutdown_type) 6639{ 6640 struct ipr_cmnd *ipr_cmd; 6641 6642 ioa_cfg->in_reset_reload = 1; 6643 ioa_cfg->allow_cmds = 0; 6644 scsi_block_requests(ioa_cfg->host); 6645 6646 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 6647 ioa_cfg->reset_cmd = ipr_cmd; 6648 ipr_cmd->job_step = job_step; 6649 ipr_cmd->u.shutdown_type = shutdown_type; 6650 6651 ipr_reset_ioa_job(ipr_cmd); 6652} 6653 6654/** 6655 * ipr_initiate_ioa_reset - Initiate an adapter reset 6656 * @ioa_cfg: ioa config struct 6657 * @shutdown_type: shutdown type 6658 * 6659 * Description: This function will initiate the reset of the given adapter. 6660 * If the caller needs to wait on the completion of the reset, 6661 * the caller must sleep on the reset_wait_q. 6662 * 6663 * Return value: 6664 * none 6665 **/ 6666static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 6667 enum ipr_shutdown_type shutdown_type) 6668{ 6669 if (ioa_cfg->ioa_is_dead) 6670 return; 6671 6672 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) 6673 ioa_cfg->sdt_state = ABORT_DUMP; 6674 6675 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 6676 dev_err(&ioa_cfg->pdev->dev, 6677 "IOA taken offline - error recovery failed\n"); 6678 6679 ioa_cfg->reset_retries = 0; 6680 ioa_cfg->ioa_is_dead = 1; 6681 6682 if (ioa_cfg->in_ioa_bringdown) { 6683 ioa_cfg->reset_cmd = NULL; 6684 ioa_cfg->in_reset_reload = 0; 6685 ipr_fail_all_ops(ioa_cfg); 6686 wake_up_all(&ioa_cfg->reset_wait_q); 6687 6688 spin_unlock_irq(ioa_cfg->host->host_lock); 6689 scsi_unblock_requests(ioa_cfg->host); 6690 spin_lock_irq(ioa_cfg->host->host_lock); 6691 return; 6692 } else { 6693 ioa_cfg->in_ioa_bringdown = 1; 6694 shutdown_type = IPR_SHUTDOWN_NONE; 6695 } 6696 } 6697 6698 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 6699 shutdown_type); 6700} 6701 6702/** 6703 * ipr_reset_freeze - Hold off all I/O activity 6704 * @ipr_cmd: ipr command struct 6705 * 6706 * Description: If the PCI slot is frozen, hold off all I/O 6707 * activity; then, as soon as the slot is available again, 6708 * initiate an adapter reset. 6709 */ 6710static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 6711{ 6712 /* Disallow new interrupts, avoid loop */ 6713 ipr_cmd->ioa_cfg->allow_interrupts = 0; 6714 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 6715 ipr_cmd->done = ipr_reset_ioa_job; 6716 return IPR_RC_JOB_RETURN; 6717} 6718 6719/** 6720 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 6721 * @pdev: PCI device struct 6722 * 6723 * Description: This routine is called to tell us that the PCI bus 6724 * is down. Can't do anything here, except put the device driver 6725 * into a holding pattern, waiting for the PCI bus to come back. 6726 */ 6727static void ipr_pci_frozen(struct pci_dev *pdev) 6728{ 6729 unsigned long flags = 0; 6730 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6731 6732 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6733 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 6734 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6735} 6736 6737/** 6738 * ipr_pci_slot_reset - Called when PCI slot has been reset. 6739 * @pdev: PCI device struct 6740 * 6741 * Description: This routine is called by the pci error recovery 6742 * code after the PCI slot has been reset, just before we 6743 * should resume normal operations. 6744 */ 6745static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 6746{ 6747 unsigned long flags = 0; 6748 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6749 6750 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6751 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 6752 IPR_SHUTDOWN_NONE); 6753 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6754 return PCI_ERS_RESULT_RECOVERED; 6755} 6756 6757/** 6758 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 6759 * @pdev: PCI device struct 6760 * 6761 * Description: This routine is called when the PCI bus has 6762 * permanently failed. 6763 */ 6764static void ipr_pci_perm_failure(struct pci_dev *pdev) 6765{ 6766 unsigned long flags = 0; 6767 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6768 6769 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6770 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 6771 ioa_cfg->sdt_state = ABORT_DUMP; 6772 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES; 6773 ioa_cfg->in_ioa_bringdown = 1; 6774 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6775 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6776} 6777 6778/** 6779 * ipr_pci_error_detected - Called when a PCI error is detected. 6780 * @pdev: PCI device struct 6781 * @state: PCI channel state 6782 * 6783 * Description: Called when a PCI error is detected. 6784 * 6785 * Return value: 6786 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 6787 */ 6788static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 6789 pci_channel_state_t state) 6790{ 6791 switch (state) { 6792 case pci_channel_io_frozen: 6793 ipr_pci_frozen(pdev); 6794 return PCI_ERS_RESULT_NEED_RESET; 6795 case pci_channel_io_perm_failure: 6796 ipr_pci_perm_failure(pdev); 6797 return PCI_ERS_RESULT_DISCONNECT; 6798 break; 6799 default: 6800 break; 6801 } 6802 return PCI_ERS_RESULT_NEED_RESET; 6803} 6804 6805/** 6806 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 6807 * @ioa_cfg: ioa cfg struct 6808 * 6809 * Description: This is the second phase of adapter intialization 6810 * This function takes care of initilizing the adapter to the point 6811 * where it can accept new commands. 6812 6813 * Return value: 6814 * 0 on sucess / -EIO on failure 6815 **/ 6816static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 6817{ 6818 int rc = 0; 6819 unsigned long host_lock_flags = 0; 6820 6821 ENTER; 6822 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 6823 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 6824 if (ioa_cfg->needs_hard_reset) { 6825 ioa_cfg->needs_hard_reset = 0; 6826 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6827 } else 6828 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 6829 IPR_SHUTDOWN_NONE); 6830 6831 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 6832 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6833 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 6834 6835 if (ioa_cfg->ioa_is_dead) { 6836 rc = -EIO; 6837 } else if (ipr_invalid_adapter(ioa_cfg)) { 6838 if (!ipr_testmode) 6839 rc = -EIO; 6840 6841 dev_err(&ioa_cfg->pdev->dev, 6842 "Adapter not supported in this hardware configuration.\n"); 6843 } 6844 6845 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 6846 6847 LEAVE; 6848 return rc; 6849} 6850 6851/** 6852 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 6853 * @ioa_cfg: ioa config struct 6854 * 6855 * Return value: 6856 * none 6857 **/ 6858static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 6859{ 6860 int i; 6861 6862 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 6863 if (ioa_cfg->ipr_cmnd_list[i]) 6864 pci_pool_free(ioa_cfg->ipr_cmd_pool, 6865 ioa_cfg->ipr_cmnd_list[i], 6866 ioa_cfg->ipr_cmnd_list_dma[i]); 6867 6868 ioa_cfg->ipr_cmnd_list[i] = NULL; 6869 } 6870 6871 if (ioa_cfg->ipr_cmd_pool) 6872 pci_pool_destroy (ioa_cfg->ipr_cmd_pool); 6873 6874 ioa_cfg->ipr_cmd_pool = NULL; 6875} 6876 6877/** 6878 * ipr_free_mem - Frees memory allocated for an adapter 6879 * @ioa_cfg: ioa cfg struct 6880 * 6881 * Return value: 6882 * nothing 6883 **/ 6884static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 6885{ 6886 int i; 6887 6888 kfree(ioa_cfg->res_entries); 6889 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), 6890 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 6891 ipr_free_cmd_blks(ioa_cfg); 6892 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 6893 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 6894 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table), 6895 ioa_cfg->cfg_table, 6896 ioa_cfg->cfg_table_dma); 6897 6898 for (i = 0; i < IPR_NUM_HCAMS; i++) { 6899 pci_free_consistent(ioa_cfg->pdev, 6900 sizeof(struct ipr_hostrcb), 6901 ioa_cfg->hostrcb[i], 6902 ioa_cfg->hostrcb_dma[i]); 6903 } 6904 6905 ipr_free_dump(ioa_cfg); 6906 kfree(ioa_cfg->trace); 6907} 6908 6909/** 6910 * ipr_free_all_resources - Free all allocated resources for an adapter. 6911 * @ipr_cmd: ipr command struct 6912 * 6913 * This function frees all allocated resources for the 6914 * specified adapter. 6915 * 6916 * Return value: 6917 * none 6918 **/ 6919static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 6920{ 6921 struct pci_dev *pdev = ioa_cfg->pdev; 6922 6923 ENTER; 6924 free_irq(pdev->irq, ioa_cfg); 6925 iounmap(ioa_cfg->hdw_dma_regs); 6926 pci_release_regions(pdev); 6927 ipr_free_mem(ioa_cfg); 6928 scsi_host_put(ioa_cfg->host); 6929 pci_disable_device(pdev); 6930 LEAVE; 6931} 6932 6933/** 6934 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 6935 * @ioa_cfg: ioa config struct 6936 * 6937 * Return value: 6938 * 0 on success / -ENOMEM on allocation failure 6939 **/ 6940static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 6941{ 6942 struct ipr_cmnd *ipr_cmd; 6943 struct ipr_ioarcb *ioarcb; 6944 dma_addr_t dma_addr; 6945 int i; 6946 6947 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, 6948 sizeof(struct ipr_cmnd), 8, 0); 6949 6950 if (!ioa_cfg->ipr_cmd_pool) 6951 return -ENOMEM; 6952 6953 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 6954 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr); 6955 6956 if (!ipr_cmd) { 6957 ipr_free_cmd_blks(ioa_cfg); 6958 return -ENOMEM; 6959 } 6960 6961 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 6962 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 6963 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 6964 6965 ioarcb = &ipr_cmd->ioarcb; 6966 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 6967 ioarcb->host_response_handle = cpu_to_be32(i << 2); 6968 ioarcb->write_ioadl_addr = 6969 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); 6970 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 6971 ioarcb->ioasa_host_pci_addr = 6972 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa)); 6973 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 6974 ipr_cmd->cmd_index = i; 6975 ipr_cmd->ioa_cfg = ioa_cfg; 6976 ipr_cmd->sense_buffer_dma = dma_addr + 6977 offsetof(struct ipr_cmnd, sense_buffer); 6978 6979 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6980 } 6981 6982 return 0; 6983} 6984 6985/** 6986 * ipr_alloc_mem - Allocate memory for an adapter 6987 * @ioa_cfg: ioa config struct 6988 * 6989 * Return value: 6990 * 0 on success / non-zero for error 6991 **/ 6992static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 6993{ 6994 struct pci_dev *pdev = ioa_cfg->pdev; 6995 int i, rc = -ENOMEM; 6996 6997 ENTER; 6998 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * 6999 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL); 7000 7001 if (!ioa_cfg->res_entries) 7002 goto out; 7003 7004 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++) 7005 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 7006 7007 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, 7008 sizeof(struct ipr_misc_cbs), 7009 &ioa_cfg->vpd_cbs_dma); 7010 7011 if (!ioa_cfg->vpd_cbs) 7012 goto out_free_res_entries; 7013 7014 if (ipr_alloc_cmd_blks(ioa_cfg)) 7015 goto out_free_vpd_cbs; 7016 7017 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, 7018 sizeof(u32) * IPR_NUM_CMD_BLKS, 7019 &ioa_cfg->host_rrq_dma); 7020 7021 if (!ioa_cfg->host_rrq) 7022 goto out_ipr_free_cmd_blocks; 7023 7024 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev, 7025 sizeof(struct ipr_config_table), 7026 &ioa_cfg->cfg_table_dma); 7027 7028 if (!ioa_cfg->cfg_table) 7029 goto out_free_host_rrq; 7030 7031 for (i = 0; i < IPR_NUM_HCAMS; i++) { 7032 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, 7033 sizeof(struct ipr_hostrcb), 7034 &ioa_cfg->hostrcb_dma[i]); 7035 7036 if (!ioa_cfg->hostrcb[i]) 7037 goto out_free_hostrcb_dma; 7038 7039 ioa_cfg->hostrcb[i]->hostrcb_dma = 7040 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 7041 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg; 7042 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 7043 } 7044 7045 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * 7046 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 7047 7048 if (!ioa_cfg->trace) 7049 goto out_free_hostrcb_dma; 7050 7051 rc = 0; 7052out: 7053 LEAVE; 7054 return rc; 7055 7056out_free_hostrcb_dma: 7057 while (i-- > 0) { 7058 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), 7059 ioa_cfg->hostrcb[i], 7060 ioa_cfg->hostrcb_dma[i]); 7061 } 7062 pci_free_consistent(pdev, sizeof(struct ipr_config_table), 7063 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma); 7064out_free_host_rrq: 7065 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 7066 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 7067out_ipr_free_cmd_blocks: 7068 ipr_free_cmd_blks(ioa_cfg); 7069out_free_vpd_cbs: 7070 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), 7071 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 7072out_free_res_entries: 7073 kfree(ioa_cfg->res_entries); 7074 goto out; 7075} 7076 7077/** 7078 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 7079 * @ioa_cfg: ioa config struct 7080 * 7081 * Return value: 7082 * none 7083 **/ 7084static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 7085{ 7086 int i; 7087 7088 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 7089 ioa_cfg->bus_attr[i].bus = i; 7090 ioa_cfg->bus_attr[i].qas_enabled = 0; 7091 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 7092 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 7093 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 7094 else 7095 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 7096 } 7097} 7098 7099/** 7100 * ipr_init_ioa_cfg - Initialize IOA config struct 7101 * @ioa_cfg: ioa config struct 7102 * @host: scsi host struct 7103 * @pdev: PCI dev struct 7104 * 7105 * Return value: 7106 * none 7107 **/ 7108static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 7109 struct Scsi_Host *host, struct pci_dev *pdev) 7110{ 7111 const struct ipr_interrupt_offsets *p; 7112 struct ipr_interrupts *t; 7113 void __iomem *base; 7114 7115 ioa_cfg->host = host; 7116 ioa_cfg->pdev = pdev; 7117 ioa_cfg->log_level = ipr_log_level; 7118 ioa_cfg->doorbell = IPR_DOORBELL; 7119 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 7120 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 7121 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); 7122 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); 7123 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 7124 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 7125 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 7126 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 7127 7128 INIT_LIST_HEAD(&ioa_cfg->free_q); 7129 INIT_LIST_HEAD(&ioa_cfg->pending_q); 7130 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 7131 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 7132 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 7133 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 7134 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread); 7135 init_waitqueue_head(&ioa_cfg->reset_wait_q); 7136 ioa_cfg->sdt_state = INACTIVE; 7137 if (ipr_enable_cache) 7138 ioa_cfg->cache_state = CACHE_ENABLED; 7139 else 7140 ioa_cfg->cache_state = CACHE_DISABLED; 7141 7142 ipr_initialize_bus_attr(ioa_cfg); 7143 7144 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 7145 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 7146 host->max_channel = IPR_MAX_BUS_TO_SCAN; 7147 host->unique_id = host->host_no; 7148 host->max_cmd_len = IPR_MAX_CDB_LEN; 7149 pci_set_drvdata(pdev, ioa_cfg); 7150 7151 p = &ioa_cfg->chip_cfg->regs; 7152 t = &ioa_cfg->regs; 7153 base = ioa_cfg->hdw_dma_regs; 7154 7155 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 7156 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 7157 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 7158 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 7159 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 7160 t->ioarrin_reg = base + p->ioarrin_reg; 7161 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 7162 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 7163 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 7164} 7165 7166/** 7167 * ipr_get_chip_cfg - Find adapter chip configuration 7168 * @dev_id: PCI device id struct 7169 * 7170 * Return value: 7171 * ptr to chip config on success / NULL on failure 7172 **/ 7173static const struct ipr_chip_cfg_t * __devinit 7174ipr_get_chip_cfg(const struct pci_device_id *dev_id) 7175{ 7176 int i; 7177 7178 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 7179 if (ipr_chip[i].vendor == dev_id->vendor && 7180 ipr_chip[i].device == dev_id->device) 7181 return ipr_chip[i].cfg; 7182 return NULL; 7183} 7184 7185/** 7186 * ipr_probe_ioa - Allocates memory and does first stage of initialization 7187 * @pdev: PCI device struct 7188 * @dev_id: PCI device id struct 7189 * 7190 * Return value: 7191 * 0 on success / non-zero on failure 7192 **/ 7193static int __devinit ipr_probe_ioa(struct pci_dev *pdev, 7194 const struct pci_device_id *dev_id) 7195{ 7196 struct ipr_ioa_cfg *ioa_cfg; 7197 struct Scsi_Host *host; 7198 unsigned long ipr_regs_pci; 7199 void __iomem *ipr_regs; 7200 int rc = PCIBIOS_SUCCESSFUL; 7201 volatile u32 mask, uproc; 7202 7203 ENTER; 7204 7205 if ((rc = pci_enable_device(pdev))) { 7206 dev_err(&pdev->dev, "Cannot enable adapter\n"); 7207 goto out; 7208 } 7209 7210 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 7211 7212 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 7213 7214 if (!host) { 7215 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 7216 rc = -ENOMEM; 7217 goto out_disable; 7218 } 7219 7220 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 7221 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 7222 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, 7223 sata_port_info.flags, &ipr_sata_ops); 7224 7225 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id); 7226 7227 if (!ioa_cfg->chip_cfg) { 7228 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 7229 dev_id->vendor, dev_id->device); 7230 goto out_scsi_host_put; 7231 } 7232 7233 if (ipr_transop_timeout) 7234 ioa_cfg->transop_timeout = ipr_transop_timeout; 7235 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT) 7236 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT; 7237 else 7238 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT; 7239 7240 ipr_regs_pci = pci_resource_start(pdev, 0); 7241 7242 rc = pci_request_regions(pdev, IPR_NAME); 7243 if (rc < 0) { 7244 dev_err(&pdev->dev, 7245 "Couldn't register memory range of registers\n"); 7246 goto out_scsi_host_put; 7247 } 7248 7249 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0)); 7250 7251 if (!ipr_regs) { 7252 dev_err(&pdev->dev, 7253 "Couldn't map memory range of registers\n"); 7254 rc = -ENOMEM; 7255 goto out_release_regions; 7256 } 7257 7258 ioa_cfg->hdw_dma_regs = ipr_regs; 7259 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 7260 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 7261 7262 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 7263 7264 pci_set_master(pdev); 7265 7266 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 7267 if (rc < 0) { 7268 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); 7269 goto cleanup_nomem; 7270 } 7271 7272 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 7273 ioa_cfg->chip_cfg->cache_line_size); 7274 7275 if (rc != PCIBIOS_SUCCESSFUL) { 7276 dev_err(&pdev->dev, "Write of cache line size failed\n"); 7277 rc = -EIO; 7278 goto cleanup_nomem; 7279 } 7280 7281 /* Save away PCI config space for use following IOA reset */ 7282 rc = pci_save_state(pdev); 7283 7284 if (rc != PCIBIOS_SUCCESSFUL) { 7285 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 7286 rc = -EIO; 7287 goto cleanup_nomem; 7288 } 7289 7290 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 7291 goto cleanup_nomem; 7292 7293 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 7294 goto cleanup_nomem; 7295 7296 rc = ipr_alloc_mem(ioa_cfg); 7297 if (rc < 0) { 7298 dev_err(&pdev->dev, 7299 "Couldn't allocate enough memory for device driver!\n"); 7300 goto cleanup_nomem; 7301 } 7302 7303 /* 7304 * If HRRQ updated interrupt is not masked, or reset alert is set, 7305 * the card is in an unknown state and needs a hard reset 7306 */ 7307 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7308 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg); 7309 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 7310 ioa_cfg->needs_hard_reset = 1; 7311 7312 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 7313 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg); 7314 7315 if (rc) { 7316 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 7317 pdev->irq, rc); 7318 goto cleanup_nolog; 7319 } 7320 7321 spin_lock(&ipr_driver_lock); 7322 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 7323 spin_unlock(&ipr_driver_lock); 7324 7325 LEAVE; 7326out: 7327 return rc; 7328 7329cleanup_nolog: 7330 ipr_free_mem(ioa_cfg); 7331cleanup_nomem: 7332 iounmap(ipr_regs); 7333out_release_regions: 7334 pci_release_regions(pdev); 7335out_scsi_host_put: 7336 scsi_host_put(host); 7337out_disable: 7338 pci_disable_device(pdev); 7339 goto out; 7340} 7341 7342/** 7343 * ipr_scan_vsets - Scans for VSET devices 7344 * @ioa_cfg: ioa config struct 7345 * 7346 * Description: Since the VSET resources do not follow SAM in that we can have 7347 * sparse LUNs with no LUN 0, we have to scan for these ourselves. 7348 * 7349 * Return value: 7350 * none 7351 **/ 7352static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) 7353{ 7354 int target, lun; 7355 7356 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) 7357 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) 7358 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); 7359} 7360 7361/** 7362 * ipr_initiate_ioa_bringdown - Bring down an adapter 7363 * @ioa_cfg: ioa config struct 7364 * @shutdown_type: shutdown type 7365 * 7366 * Description: This function will initiate bringing down the adapter. 7367 * This consists of issuing an IOA shutdown to the adapter 7368 * to flush the cache, and running BIST. 7369 * If the caller needs to wait on the completion of the reset, 7370 * the caller must sleep on the reset_wait_q. 7371 * 7372 * Return value: 7373 * none 7374 **/ 7375static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 7376 enum ipr_shutdown_type shutdown_type) 7377{ 7378 ENTER; 7379 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 7380 ioa_cfg->sdt_state = ABORT_DUMP; 7381 ioa_cfg->reset_retries = 0; 7382 ioa_cfg->in_ioa_bringdown = 1; 7383 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 7384 LEAVE; 7385} 7386 7387/** 7388 * __ipr_remove - Remove a single adapter 7389 * @pdev: pci device struct 7390 * 7391 * Adapter hot plug remove entry point. 7392 * 7393 * Return value: 7394 * none 7395 **/ 7396static void __ipr_remove(struct pci_dev *pdev) 7397{ 7398 unsigned long host_lock_flags = 0; 7399 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7400 ENTER; 7401 7402 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7403 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 7404 7405 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7406 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7407 flush_scheduled_work(); 7408 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7409 7410 spin_lock(&ipr_driver_lock); 7411 list_del(&ioa_cfg->queue); 7412 spin_unlock(&ipr_driver_lock); 7413 7414 if (ioa_cfg->sdt_state == ABORT_DUMP) 7415 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 7416 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7417 7418 ipr_free_all_resources(ioa_cfg); 7419 7420 LEAVE; 7421} 7422 7423/** 7424 * ipr_remove - IOA hot plug remove entry point 7425 * @pdev: pci device struct 7426 * 7427 * Adapter hot plug remove entry point. 7428 * 7429 * Return value: 7430 * none 7431 **/ 7432static void ipr_remove(struct pci_dev *pdev) 7433{ 7434 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7435 7436 ENTER; 7437 7438 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7439 &ipr_trace_attr); 7440 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj, 7441 &ipr_dump_attr); 7442 scsi_remove_host(ioa_cfg->host); 7443 7444 __ipr_remove(pdev); 7445 7446 LEAVE; 7447} 7448 7449/** 7450 * ipr_probe - Adapter hot plug add entry point 7451 * 7452 * Return value: 7453 * 0 on success / non-zero on failure 7454 **/ 7455static int __devinit ipr_probe(struct pci_dev *pdev, 7456 const struct pci_device_id *dev_id) 7457{ 7458 struct ipr_ioa_cfg *ioa_cfg; 7459 int rc; 7460 7461 rc = ipr_probe_ioa(pdev, dev_id); 7462 7463 if (rc) 7464 return rc; 7465 7466 ioa_cfg = pci_get_drvdata(pdev); 7467 rc = ipr_probe_ioa_part2(ioa_cfg); 7468 7469 if (rc) { 7470 __ipr_remove(pdev); 7471 return rc; 7472 } 7473 7474 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 7475 7476 if (rc) { 7477 __ipr_remove(pdev); 7478 return rc; 7479 } 7480 7481 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7482 &ipr_trace_attr); 7483 7484 if (rc) { 7485 scsi_remove_host(ioa_cfg->host); 7486 __ipr_remove(pdev); 7487 return rc; 7488 } 7489 7490 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj, 7491 &ipr_dump_attr); 7492 7493 if (rc) { 7494 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7495 &ipr_trace_attr); 7496 scsi_remove_host(ioa_cfg->host); 7497 __ipr_remove(pdev); 7498 return rc; 7499 } 7500 7501 scsi_scan_host(ioa_cfg->host); 7502 ipr_scan_vsets(ioa_cfg); 7503 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); 7504 ioa_cfg->allow_ml_add_del = 1; 7505 ioa_cfg->host->max_channel = IPR_VSET_BUS; 7506 schedule_work(&ioa_cfg->work_q); 7507 return 0; 7508} 7509 7510/** 7511 * ipr_shutdown - Shutdown handler. 7512 * @pdev: pci device struct 7513 * 7514 * This function is invoked upon system shutdown/reboot. It will issue 7515 * an adapter shutdown to the adapter to flush the write cache. 7516 * 7517 * Return value: 7518 * none 7519 **/ 7520static void ipr_shutdown(struct pci_dev *pdev) 7521{ 7522 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7523 unsigned long lock_flags = 0; 7524 7525 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 7526 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 7527 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 7528 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7529} 7530 7531static struct pci_device_id ipr_pci_table[] __devinitdata = { 7532 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7533 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 }, 7534 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7535 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 }, 7536 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7537 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 }, 7538 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7539 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 }, 7540 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7541 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 }, 7542 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7543 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 }, 7544 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7545 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 }, 7546 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7547 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 7548 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7549 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7550 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 7551 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7552 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 }, 7553 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7554 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 7555 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7556 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7557 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 7558 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7559 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 }, 7560 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7561 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 7562 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7563 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7564 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 0 }, 7565 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7566 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0, 7567 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7568 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7569 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 }, 7570 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7571 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 7572 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7573 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 7574 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 }, 7575 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7576 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 }, 7577 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7578 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 7579 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7580 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7581 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 7582 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7583 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E, 7584 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 7585 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7586 { } 7587}; 7588MODULE_DEVICE_TABLE(pci, ipr_pci_table); 7589 7590static struct pci_error_handlers ipr_err_handler = { 7591 .error_detected = ipr_pci_error_detected, 7592 .slot_reset = ipr_pci_slot_reset, 7593}; 7594 7595static struct pci_driver ipr_driver = { 7596 .name = IPR_NAME, 7597 .id_table = ipr_pci_table, 7598 .probe = ipr_probe, 7599 .remove = ipr_remove, 7600 .shutdown = ipr_shutdown, 7601 .err_handler = &ipr_err_handler, 7602}; 7603 7604/** 7605 * ipr_init - Module entry point 7606 * 7607 * Return value: 7608 * 0 on success / negative value on failure 7609 **/ 7610static int __init ipr_init(void) 7611{ 7612 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 7613 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 7614 7615 return pci_register_driver(&ipr_driver); 7616} 7617 7618/** 7619 * ipr_exit - Module unload 7620 * 7621 * Module unload entry point. 7622 * 7623 * Return value: 7624 * none 7625 **/ 7626static void __exit ipr_exit(void) 7627{ 7628 pci_unregister_driver(&ipr_driver); 7629} 7630 7631module_init(ipr_init); 7632module_exit(ipr_exit); 7633