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