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