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 DEFINE_SPINLOCK(ipr_driver_lock); 95 96 /* This table describes the differences between DMA controller chips */ 97 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { 98 { /* Gemstone and Citrine */ 99 .mailbox = 0x0042C, 100 .cache_line_size = 0x20, 101 { 102 .set_interrupt_mask_reg = 0x0022C, 103 .clr_interrupt_mask_reg = 0x00230, 104 .sense_interrupt_mask_reg = 0x0022C, 105 .clr_interrupt_reg = 0x00228, 106 .sense_interrupt_reg = 0x00224, 107 .ioarrin_reg = 0x00404, 108 .sense_uproc_interrupt_reg = 0x00214, 109 .set_uproc_interrupt_reg = 0x00214, 110 .clr_uproc_interrupt_reg = 0x00218 111 } 112 }, 113 { /* Snipe and Scamp */ 114 .mailbox = 0x0052C, 115 .cache_line_size = 0x20, 116 { 117 .set_interrupt_mask_reg = 0x00288, 118 .clr_interrupt_mask_reg = 0x0028C, 119 .sense_interrupt_mask_reg = 0x00288, 120 .clr_interrupt_reg = 0x00284, 121 .sense_interrupt_reg = 0x00280, 122 .ioarrin_reg = 0x00504, 123 .sense_uproc_interrupt_reg = 0x00290, 124 .set_uproc_interrupt_reg = 0x00290, 125 .clr_uproc_interrupt_reg = 0x00294 126 } 127 }, 128 }; 129 130 static const struct ipr_chip_t ipr_chip[] = { 131 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] }, 132 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] }, 133 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] }, 134 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] } 135 }; 136 137 static int ipr_max_bus_speeds [] = { 138 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE 139 }; 140 141 MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); 142 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); 143 module_param_named(max_speed, ipr_max_speed, uint, 0); 144 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); 145 module_param_named(log_level, ipr_log_level, uint, 0); 146 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); 147 module_param_named(testmode, ipr_testmode, int, 0); 148 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); 149 module_param_named(fastfail, ipr_fastfail, int, 0); 150 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); 151 module_param_named(transop_timeout, ipr_transop_timeout, int, 0); 152 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); 153 MODULE_LICENSE("GPL"); 154 MODULE_VERSION(IPR_DRIVER_VERSION); 155 156 static const char *ipr_gpdd_dev_end_states[] = { 157 "Command complete", 158 "Terminated by host", 159 "Terminated by device reset", 160 "Terminated by bus reset", 161 "Unknown", 162 "Command not started" 163 }; 164 165 static const char *ipr_gpdd_dev_bus_phases[] = { 166 "Bus free", 167 "Arbitration", 168 "Selection", 169 "Message out", 170 "Command", 171 "Message in", 172 "Data out", 173 "Data in", 174 "Status", 175 "Reselection", 176 "Unknown" 177 }; 178 179 /* A constant array of IOASCs/URCs/Error Messages */ 180 static const 181 struct ipr_error_table_t ipr_error_table[] = { 182 {0x00000000, 1, 1, 183 "8155: An unknown error was received"}, 184 {0x00330000, 0, 0, 185 "Soft underlength error"}, 186 {0x005A0000, 0, 0, 187 "Command to be cancelled not found"}, 188 {0x00808000, 0, 0, 189 "Qualified success"}, 190 {0x01080000, 1, 1, 191 "FFFE: Soft device bus error recovered by the IOA"}, 192 {0x01170600, 0, 1, 193 "FFF9: Device sector reassign successful"}, 194 {0x01170900, 0, 1, 195 "FFF7: Media error recovered by device rewrite procedures"}, 196 {0x01180200, 0, 1, 197 "7001: IOA sector reassignment successful"}, 198 {0x01180500, 0, 1, 199 "FFF9: Soft media error. Sector reassignment recommended"}, 200 {0x01180600, 0, 1, 201 "FFF7: Media error recovered by IOA rewrite procedures"}, 202 {0x01418000, 0, 1, 203 "FF3D: Soft PCI bus error recovered by the IOA"}, 204 {0x01440000, 1, 1, 205 "FFF6: Device hardware error recovered by the IOA"}, 206 {0x01448100, 0, 1, 207 "FFF6: Device hardware error recovered by the device"}, 208 {0x01448200, 1, 1, 209 "FF3D: Soft IOA error recovered by the IOA"}, 210 {0x01448300, 0, 1, 211 "FFFA: Undefined device response recovered by the IOA"}, 212 {0x014A0000, 1, 1, 213 "FFF6: Device bus error, message or command phase"}, 214 {0x015D0000, 0, 1, 215 "FFF6: Failure prediction threshold exceeded"}, 216 {0x015D9200, 0, 1, 217 "8009: Impending cache battery pack failure"}, 218 {0x02040400, 0, 0, 219 "34FF: Disk device format in progress"}, 220 {0x023F0000, 0, 0, 221 "Synchronization required"}, 222 {0x024E0000, 0, 0, 223 "No ready, IOA shutdown"}, 224 {0x025A0000, 0, 0, 225 "Not ready, IOA has been shutdown"}, 226 {0x02670100, 0, 1, 227 "3020: Storage subsystem configuration error"}, 228 {0x03110B00, 0, 0, 229 "FFF5: Medium error, data unreadable, recommend reassign"}, 230 {0x03110C00, 0, 0, 231 "7000: Medium error, data unreadable, do not reassign"}, 232 {0x03310000, 0, 1, 233 "FFF3: Disk media format bad"}, 234 {0x04050000, 0, 1, 235 "3002: Addressed device failed to respond to selection"}, 236 {0x04080000, 1, 1, 237 "3100: Device bus error"}, 238 {0x04080100, 0, 1, 239 "3109: IOA timed out a device command"}, 240 {0x04088000, 0, 0, 241 "3120: SCSI bus is not operational"}, 242 {0x04118000, 0, 1, 243 "9000: IOA reserved area data check"}, 244 {0x04118100, 0, 1, 245 "9001: IOA reserved area invalid data pattern"}, 246 {0x04118200, 0, 1, 247 "9002: IOA reserved area LRC error"}, 248 {0x04320000, 0, 1, 249 "102E: Out of alternate sectors for disk storage"}, 250 {0x04330000, 1, 1, 251 "FFF4: Data transfer underlength error"}, 252 {0x04338000, 1, 1, 253 "FFF4: Data transfer overlength error"}, 254 {0x043E0100, 0, 1, 255 "3400: Logical unit failure"}, 256 {0x04408500, 0, 1, 257 "FFF4: Device microcode is corrupt"}, 258 {0x04418000, 1, 1, 259 "8150: PCI bus error"}, 260 {0x04430000, 1, 0, 261 "Unsupported device bus message received"}, 262 {0x04440000, 1, 1, 263 "FFF4: Disk device problem"}, 264 {0x04448200, 1, 1, 265 "8150: Permanent IOA failure"}, 266 {0x04448300, 0, 1, 267 "3010: Disk device returned wrong response to IOA"}, 268 {0x04448400, 0, 1, 269 "8151: IOA microcode error"}, 270 {0x04448500, 0, 0, 271 "Device bus status error"}, 272 {0x04448600, 0, 1, 273 "8157: IOA error requiring IOA reset to recover"}, 274 {0x04490000, 0, 0, 275 "Message reject received from the device"}, 276 {0x04449200, 0, 1, 277 "8008: A permanent cache battery pack failure occurred"}, 278 {0x0444A000, 0, 1, 279 "9090: Disk unit has been modified after the last known status"}, 280 {0x0444A200, 0, 1, 281 "9081: IOA detected device error"}, 282 {0x0444A300, 0, 1, 283 "9082: IOA detected device error"}, 284 {0x044A0000, 1, 1, 285 "3110: Device bus error, message or command phase"}, 286 {0x04670400, 0, 1, 287 "9091: Incorrect hardware configuration change has been detected"}, 288 {0x046E0000, 0, 1, 289 "FFF4: Command to logical unit failed"}, 290 {0x05240000, 1, 0, 291 "Illegal request, invalid request type or request packet"}, 292 {0x05250000, 0, 0, 293 "Illegal request, invalid resource handle"}, 294 {0x05260000, 0, 0, 295 "Illegal request, invalid field in parameter list"}, 296 {0x05260100, 0, 0, 297 "Illegal request, parameter not supported"}, 298 {0x05260200, 0, 0, 299 "Illegal request, parameter value invalid"}, 300 {0x052C0000, 0, 0, 301 "Illegal request, command sequence error"}, 302 {0x06040500, 0, 1, 303 "9031: Array protection temporarily suspended, protection resuming"}, 304 {0x06040600, 0, 1, 305 "9040: Array protection temporarily suspended, protection resuming"}, 306 {0x06290000, 0, 1, 307 "FFFB: SCSI bus was reset"}, 308 {0x06290500, 0, 0, 309 "FFFE: SCSI bus transition to single ended"}, 310 {0x06290600, 0, 0, 311 "FFFE: SCSI bus transition to LVD"}, 312 {0x06298000, 0, 1, 313 "FFFB: SCSI bus was reset by another initiator"}, 314 {0x063F0300, 0, 1, 315 "3029: A device replacement has occurred"}, 316 {0x064C8000, 0, 1, 317 "9051: IOA cache data exists for a missing or failed device"}, 318 {0x06670100, 0, 1, 319 "9025: Disk unit is not supported at its physical location"}, 320 {0x06670600, 0, 1, 321 "3020: IOA detected a SCSI bus configuration error"}, 322 {0x06678000, 0, 1, 323 "3150: SCSI bus configuration error"}, 324 {0x06690200, 0, 1, 325 "9041: Array protection temporarily suspended"}, 326 {0x06698200, 0, 1, 327 "9042: Corrupt array parity detected on specified device"}, 328 {0x066B0200, 0, 1, 329 "9030: Array no longer protected due to missing or failed disk unit"}, 330 {0x066B8200, 0, 1, 331 "9032: Array exposed but still protected"}, 332 {0x07270000, 0, 0, 333 "Failure due to other device"}, 334 {0x07278000, 0, 1, 335 "9008: IOA does not support functions expected by devices"}, 336 {0x07278100, 0, 1, 337 "9010: Cache data associated with attached devices cannot be found"}, 338 {0x07278200, 0, 1, 339 "9011: Cache data belongs to devices other than those attached"}, 340 {0x07278400, 0, 1, 341 "9020: Array missing 2 or more devices with only 1 device present"}, 342 {0x07278500, 0, 1, 343 "9021: Array missing 2 or more devices with 2 or more devices present"}, 344 {0x07278600, 0, 1, 345 "9022: Exposed array is missing a required device"}, 346 {0x07278700, 0, 1, 347 "9023: Array member(s) not at required physical locations"}, 348 {0x07278800, 0, 1, 349 "9024: Array not functional due to present hardware configuration"}, 350 {0x07278900, 0, 1, 351 "9026: Array not functional due to present hardware configuration"}, 352 {0x07278A00, 0, 1, 353 "9027: Array is missing a device and parity is out of sync"}, 354 {0x07278B00, 0, 1, 355 "9028: Maximum number of arrays already exist"}, 356 {0x07278C00, 0, 1, 357 "9050: Required cache data cannot be located for a disk unit"}, 358 {0x07278D00, 0, 1, 359 "9052: Cache data exists for a device that has been modified"}, 360 {0x07278F00, 0, 1, 361 "9054: IOA resources not available due to previous problems"}, 362 {0x07279100, 0, 1, 363 "9092: Disk unit requires initialization before use"}, 364 {0x07279200, 0, 1, 365 "9029: Incorrect hardware configuration change has been detected"}, 366 {0x07279600, 0, 1, 367 "9060: One or more disk pairs are missing from an array"}, 368 {0x07279700, 0, 1, 369 "9061: One or more disks are missing from an array"}, 370 {0x07279800, 0, 1, 371 "9062: One or more disks are missing from an array"}, 372 {0x07279900, 0, 1, 373 "9063: Maximum number of functional arrays has been exceeded"}, 374 {0x0B260000, 0, 0, 375 "Aborted command, invalid descriptor"}, 376 {0x0B5A0000, 0, 0, 377 "Command terminated by host"} 378 }; 379 380 static const struct ipr_ses_table_entry ipr_ses_table[] = { 381 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, 382 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, 383 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ 384 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ 385 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ 386 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ 387 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, 388 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, 389 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 390 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 391 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, 392 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, 393 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } 394 }; 395 396 /* 397 * Function Prototypes 398 */ 399 static int ipr_reset_alert(struct ipr_cmnd *); 400 static void ipr_process_ccn(struct ipr_cmnd *); 401 static void ipr_process_error(struct ipr_cmnd *); 402 static void ipr_reset_ioa_job(struct ipr_cmnd *); 403 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, 404 enum ipr_shutdown_type); 405 406 #ifdef CONFIG_SCSI_IPR_TRACE 407 /** 408 * ipr_trc_hook - Add a trace entry to the driver trace 409 * @ipr_cmd: ipr command struct 410 * @type: trace type 411 * @add_data: additional data 412 * 413 * Return value: 414 * none 415 **/ 416 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, 417 u8 type, u32 add_data) 418 { 419 struct ipr_trace_entry *trace_entry; 420 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 421 422 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++]; 423 trace_entry->time = jiffies; 424 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; 425 trace_entry->type = type; 426 trace_entry->cmd_index = ipr_cmd->cmd_index; 427 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; 428 trace_entry->u.add_data = add_data; 429 } 430 #else 431 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0) 432 #endif 433 434 /** 435 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse 436 * @ipr_cmd: ipr command struct 437 * 438 * Return value: 439 * none 440 **/ 441 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 442 { 443 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 444 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 445 446 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 447 ioarcb->write_data_transfer_length = 0; 448 ioarcb->read_data_transfer_length = 0; 449 ioarcb->write_ioadl_len = 0; 450 ioarcb->read_ioadl_len = 0; 451 ioasa->ioasc = 0; 452 ioasa->residual_data_len = 0; 453 454 ipr_cmd->scsi_cmd = NULL; 455 ipr_cmd->sense_buffer[0] = 0; 456 ipr_cmd->dma_use_sg = 0; 457 } 458 459 /** 460 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block 461 * @ipr_cmd: ipr command struct 462 * 463 * Return value: 464 * none 465 **/ 466 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 467 { 468 ipr_reinit_ipr_cmnd(ipr_cmd); 469 ipr_cmd->u.scratch = 0; 470 ipr_cmd->sibling = NULL; 471 init_timer(&ipr_cmd->timer); 472 } 473 474 /** 475 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block 476 * @ioa_cfg: ioa config struct 477 * 478 * Return value: 479 * pointer to ipr command struct 480 **/ 481 static 482 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) 483 { 484 struct ipr_cmnd *ipr_cmd; 485 486 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue); 487 list_del(&ipr_cmd->queue); 488 ipr_init_ipr_cmnd(ipr_cmd); 489 490 return ipr_cmd; 491 } 492 493 /** 494 * ipr_unmap_sglist - Unmap scatterlist if mapped 495 * @ioa_cfg: ioa config struct 496 * @ipr_cmd: ipr command struct 497 * 498 * Return value: 499 * nothing 500 **/ 501 static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg, 502 struct ipr_cmnd *ipr_cmd) 503 { 504 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 505 506 if (ipr_cmd->dma_use_sg) { 507 if (scsi_cmd->use_sg > 0) { 508 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer, 509 scsi_cmd->use_sg, 510 scsi_cmd->sc_data_direction); 511 } else { 512 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle, 513 scsi_cmd->request_bufflen, 514 scsi_cmd->sc_data_direction); 515 } 516 } 517 } 518 519 /** 520 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts 521 * @ioa_cfg: ioa config struct 522 * @clr_ints: interrupts to clear 523 * 524 * This function masks all interrupts on the adapter, then clears the 525 * interrupts specified in the mask 526 * 527 * Return value: 528 * none 529 **/ 530 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, 531 u32 clr_ints) 532 { 533 volatile u32 int_reg; 534 535 /* Stop new interrupts */ 536 ioa_cfg->allow_interrupts = 0; 537 538 /* Set interrupt mask to stop all new interrupts */ 539 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); 540 541 /* Clear any pending interrupts */ 542 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg); 543 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 544 } 545 546 /** 547 * ipr_save_pcix_cmd_reg - Save PCI-X command register 548 * @ioa_cfg: ioa config struct 549 * 550 * Return value: 551 * 0 on success / -EIO on failure 552 **/ 553 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 554 { 555 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 556 557 if (pcix_cmd_reg == 0) { 558 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 559 return -EIO; 560 } 561 562 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 563 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 564 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 565 return -EIO; 566 } 567 568 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; 569 return 0; 570 } 571 572 /** 573 * ipr_set_pcix_cmd_reg - Setup PCI-X command register 574 * @ioa_cfg: ioa config struct 575 * 576 * Return value: 577 * 0 on success / -EIO on failure 578 **/ 579 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 580 { 581 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 582 583 if (pcix_cmd_reg) { 584 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 585 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 586 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); 587 return -EIO; 588 } 589 } else { 590 dev_err(&ioa_cfg->pdev->dev, 591 "Failed to setup PCI-X command register\n"); 592 return -EIO; 593 } 594 595 return 0; 596 } 597 598 /** 599 * ipr_scsi_eh_done - mid-layer done function for aborted ops 600 * @ipr_cmd: ipr command struct 601 * 602 * This function is invoked by the interrupt handler for 603 * ops generated by the SCSI mid-layer which are being aborted. 604 * 605 * Return value: 606 * none 607 **/ 608 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 609 { 610 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 611 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 612 613 scsi_cmd->result |= (DID_ERROR << 16); 614 615 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 616 scsi_cmd->scsi_done(scsi_cmd); 617 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 618 } 619 620 /** 621 * ipr_fail_all_ops - Fails all outstanding ops. 622 * @ioa_cfg: ioa config struct 623 * 624 * This function fails all outstanding ops. 625 * 626 * Return value: 627 * none 628 **/ 629 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) 630 { 631 struct ipr_cmnd *ipr_cmd, *temp; 632 633 ENTER; 634 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) { 635 list_del(&ipr_cmd->queue); 636 637 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); 638 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID); 639 640 if (ipr_cmd->scsi_cmd) 641 ipr_cmd->done = ipr_scsi_eh_done; 642 643 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET); 644 del_timer(&ipr_cmd->timer); 645 ipr_cmd->done(ipr_cmd); 646 } 647 648 LEAVE; 649 } 650 651 /** 652 * ipr_do_req - Send driver initiated requests. 653 * @ipr_cmd: ipr command struct 654 * @done: done function 655 * @timeout_func: timeout function 656 * @timeout: timeout value 657 * 658 * This function sends the specified command to the adapter with the 659 * timeout given. The done function is invoked on command completion. 660 * 661 * Return value: 662 * none 663 **/ 664 static void ipr_do_req(struct ipr_cmnd *ipr_cmd, 665 void (*done) (struct ipr_cmnd *), 666 void (*timeout_func) (struct ipr_cmnd *), u32 timeout) 667 { 668 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 669 670 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 671 672 ipr_cmd->done = done; 673 674 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 675 ipr_cmd->timer.expires = jiffies + timeout; 676 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func; 677 678 add_timer(&ipr_cmd->timer); 679 680 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); 681 682 mb(); 683 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 684 ioa_cfg->regs.ioarrin_reg); 685 } 686 687 /** 688 * ipr_internal_cmd_done - Op done function for an internally generated op. 689 * @ipr_cmd: ipr command struct 690 * 691 * This function is the op done function for an internally generated, 692 * blocking op. It simply wakes the sleeping thread. 693 * 694 * Return value: 695 * none 696 **/ 697 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) 698 { 699 if (ipr_cmd->sibling) 700 ipr_cmd->sibling = NULL; 701 else 702 complete(&ipr_cmd->completion); 703 } 704 705 /** 706 * ipr_send_blocking_cmd - Send command and sleep on its completion. 707 * @ipr_cmd: ipr command struct 708 * @timeout_func: function to invoke if command times out 709 * @timeout: timeout 710 * 711 * Return value: 712 * none 713 **/ 714 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, 715 void (*timeout_func) (struct ipr_cmnd *ipr_cmd), 716 u32 timeout) 717 { 718 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 719 720 init_completion(&ipr_cmd->completion); 721 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); 722 723 spin_unlock_irq(ioa_cfg->host->host_lock); 724 wait_for_completion(&ipr_cmd->completion); 725 spin_lock_irq(ioa_cfg->host->host_lock); 726 } 727 728 /** 729 * ipr_send_hcam - Send an HCAM to the adapter. 730 * @ioa_cfg: ioa config struct 731 * @type: HCAM type 732 * @hostrcb: hostrcb struct 733 * 734 * This function will send a Host Controlled Async command to the adapter. 735 * If HCAMs are currently not allowed to be issued to the adapter, it will 736 * place the hostrcb on the free queue. 737 * 738 * Return value: 739 * none 740 **/ 741 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, 742 struct ipr_hostrcb *hostrcb) 743 { 744 struct ipr_cmnd *ipr_cmd; 745 struct ipr_ioarcb *ioarcb; 746 747 if (ioa_cfg->allow_cmds) { 748 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 749 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 750 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); 751 752 ipr_cmd->u.hostrcb = hostrcb; 753 ioarcb = &ipr_cmd->ioarcb; 754 755 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 756 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; 757 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; 758 ioarcb->cmd_pkt.cdb[1] = type; 759 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; 760 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; 761 762 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam)); 763 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 764 ipr_cmd->ioadl[0].flags_and_data_len = 765 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam)); 766 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma); 767 768 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) 769 ipr_cmd->done = ipr_process_ccn; 770 else 771 ipr_cmd->done = ipr_process_error; 772 773 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); 774 775 mb(); 776 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 777 ioa_cfg->regs.ioarrin_reg); 778 } else { 779 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 780 } 781 } 782 783 /** 784 * ipr_init_res_entry - Initialize a resource entry struct. 785 * @res: resource entry struct 786 * 787 * Return value: 788 * none 789 **/ 790 static void ipr_init_res_entry(struct ipr_resource_entry *res) 791 { 792 res->needs_sync_complete = 1; 793 res->in_erp = 0; 794 res->add_to_ml = 0; 795 res->del_from_ml = 0; 796 res->resetting_device = 0; 797 res->sdev = NULL; 798 } 799 800 /** 801 * ipr_handle_config_change - Handle a config change from the adapter 802 * @ioa_cfg: ioa config struct 803 * @hostrcb: hostrcb 804 * 805 * Return value: 806 * none 807 **/ 808 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, 809 struct ipr_hostrcb *hostrcb) 810 { 811 struct ipr_resource_entry *res = NULL; 812 struct ipr_config_table_entry *cfgte; 813 u32 is_ndn = 1; 814 815 cfgte = &hostrcb->hcam.u.ccn.cfgte; 816 817 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 818 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr, 819 sizeof(cfgte->res_addr))) { 820 is_ndn = 0; 821 break; 822 } 823 } 824 825 if (is_ndn) { 826 if (list_empty(&ioa_cfg->free_res_q)) { 827 ipr_send_hcam(ioa_cfg, 828 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 829 hostrcb); 830 return; 831 } 832 833 res = list_entry(ioa_cfg->free_res_q.next, 834 struct ipr_resource_entry, queue); 835 836 list_del(&res->queue); 837 ipr_init_res_entry(res); 838 list_add_tail(&res->queue, &ioa_cfg->used_res_q); 839 } 840 841 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 842 843 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { 844 if (res->sdev) { 845 res->sdev->hostdata = NULL; 846 res->del_from_ml = 1; 847 if (ioa_cfg->allow_ml_add_del) 848 schedule_work(&ioa_cfg->work_q); 849 } else 850 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 851 } else if (!res->sdev) { 852 res->add_to_ml = 1; 853 if (ioa_cfg->allow_ml_add_del) 854 schedule_work(&ioa_cfg->work_q); 855 } 856 857 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 858 } 859 860 /** 861 * ipr_process_ccn - Op done function for a CCN. 862 * @ipr_cmd: ipr command struct 863 * 864 * This function is the op done function for a configuration 865 * change notification host controlled async from the adapter. 866 * 867 * Return value: 868 * none 869 **/ 870 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) 871 { 872 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 873 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 874 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 875 876 list_del(&hostrcb->queue); 877 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 878 879 if (ioasc) { 880 if (ioasc != IPR_IOASC_IOA_WAS_RESET) 881 dev_err(&ioa_cfg->pdev->dev, 882 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 883 884 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 885 } else { 886 ipr_handle_config_change(ioa_cfg, hostrcb); 887 } 888 } 889 890 /** 891 * ipr_log_vpd - Log the passed VPD to the error log. 892 * @vpids: vendor/product id struct 893 * @serial_num: serial number string 894 * 895 * Return value: 896 * none 897 **/ 898 static void ipr_log_vpd(struct ipr_std_inq_vpids *vpids, u8 *serial_num) 899 { 900 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN 901 + IPR_SERIAL_NUM_LEN]; 902 903 memcpy(buffer, vpids->vendor_id, IPR_VENDOR_ID_LEN); 904 memcpy(buffer + IPR_VENDOR_ID_LEN, vpids->product_id, 905 IPR_PROD_ID_LEN); 906 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; 907 ipr_err("Vendor/Product ID: %s\n", buffer); 908 909 memcpy(buffer, serial_num, IPR_SERIAL_NUM_LEN); 910 buffer[IPR_SERIAL_NUM_LEN] = '\0'; 911 ipr_err(" Serial Number: %s\n", buffer); 912 } 913 914 /** 915 * ipr_log_cache_error - Log a cache error. 916 * @ioa_cfg: ioa config struct 917 * @hostrcb: hostrcb struct 918 * 919 * Return value: 920 * none 921 **/ 922 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, 923 struct ipr_hostrcb *hostrcb) 924 { 925 struct ipr_hostrcb_type_02_error *error = 926 &hostrcb->hcam.u.error.u.type_02_error; 927 928 ipr_err("-----Current Configuration-----\n"); 929 ipr_err("Cache Directory Card Information:\n"); 930 ipr_log_vpd(&error->ioa_vpids, error->ioa_sn); 931 ipr_err("Adapter Card Information:\n"); 932 ipr_log_vpd(&error->cfc_vpids, error->cfc_sn); 933 934 ipr_err("-----Expected Configuration-----\n"); 935 ipr_err("Cache Directory Card Information:\n"); 936 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpids, 937 error->ioa_last_attached_to_cfc_sn); 938 ipr_err("Adapter Card Information:\n"); 939 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpids, 940 error->cfc_last_attached_to_ioa_sn); 941 942 ipr_err("Additional IOA Data: %08X %08X %08X\n", 943 be32_to_cpu(error->ioa_data[0]), 944 be32_to_cpu(error->ioa_data[1]), 945 be32_to_cpu(error->ioa_data[2])); 946 } 947 948 /** 949 * ipr_log_config_error - Log a configuration error. 950 * @ioa_cfg: ioa config struct 951 * @hostrcb: hostrcb struct 952 * 953 * Return value: 954 * none 955 **/ 956 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, 957 struct ipr_hostrcb *hostrcb) 958 { 959 int errors_logged, i; 960 struct ipr_hostrcb_device_data_entry *dev_entry; 961 struct ipr_hostrcb_type_03_error *error; 962 963 error = &hostrcb->hcam.u.error.u.type_03_error; 964 errors_logged = be32_to_cpu(error->errors_logged); 965 966 ipr_err("Device Errors Detected/Logged: %d/%d\n", 967 be32_to_cpu(error->errors_detected), errors_logged); 968 969 dev_entry = error->dev_entry; 970 971 for (i = 0; i < errors_logged; i++, dev_entry++) { 972 ipr_err_separator; 973 974 if (dev_entry->dev_res_addr.bus >= IPR_MAX_NUM_BUSES) { 975 ipr_err("Device %d: missing\n", i + 1); 976 } else { 977 ipr_err("Device %d: %d:%d:%d:%d\n", i + 1, 978 ioa_cfg->host->host_no, dev_entry->dev_res_addr.bus, 979 dev_entry->dev_res_addr.target, dev_entry->dev_res_addr.lun); 980 } 981 ipr_log_vpd(&dev_entry->dev_vpids, dev_entry->dev_sn); 982 983 ipr_err("-----New Device Information-----\n"); 984 ipr_log_vpd(&dev_entry->new_dev_vpids, dev_entry->new_dev_sn); 985 986 ipr_err("Cache Directory Card Information:\n"); 987 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpids, 988 dev_entry->ioa_last_with_dev_sn); 989 990 ipr_err("Adapter Card Information:\n"); 991 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpids, 992 dev_entry->cfc_last_with_dev_sn); 993 994 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", 995 be32_to_cpu(dev_entry->ioa_data[0]), 996 be32_to_cpu(dev_entry->ioa_data[1]), 997 be32_to_cpu(dev_entry->ioa_data[2]), 998 be32_to_cpu(dev_entry->ioa_data[3]), 999 be32_to_cpu(dev_entry->ioa_data[4])); 1000 } 1001 } 1002 1003 /** 1004 * ipr_log_array_error - Log an array configuration error. 1005 * @ioa_cfg: ioa config struct 1006 * @hostrcb: hostrcb struct 1007 * 1008 * Return value: 1009 * none 1010 **/ 1011 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, 1012 struct ipr_hostrcb *hostrcb) 1013 { 1014 int i; 1015 struct ipr_hostrcb_type_04_error *error; 1016 struct ipr_hostrcb_array_data_entry *array_entry; 1017 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1018 1019 error = &hostrcb->hcam.u.error.u.type_04_error; 1020 1021 ipr_err_separator; 1022 1023 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1024 error->protection_level, 1025 ioa_cfg->host->host_no, 1026 error->last_func_vset_res_addr.bus, 1027 error->last_func_vset_res_addr.target, 1028 error->last_func_vset_res_addr.lun); 1029 1030 ipr_err_separator; 1031 1032 array_entry = error->array_member; 1033 1034 for (i = 0; i < 18; i++) { 1035 if (!memcmp(array_entry->serial_num, zero_sn, IPR_SERIAL_NUM_LEN)) 1036 continue; 1037 1038 if (be32_to_cpu(error->exposed_mode_adn) == i) { 1039 ipr_err("Exposed Array Member %d:\n", i); 1040 } else { 1041 ipr_err("Array Member %d:\n", i); 1042 } 1043 1044 ipr_log_vpd(&array_entry->vpids, array_entry->serial_num); 1045 1046 if (array_entry->dev_res_addr.bus >= IPR_MAX_NUM_BUSES) { 1047 ipr_err("Current Location: unknown\n"); 1048 } else { 1049 ipr_err("Current Location: %d:%d:%d:%d\n", 1050 ioa_cfg->host->host_no, 1051 array_entry->dev_res_addr.bus, 1052 array_entry->dev_res_addr.target, 1053 array_entry->dev_res_addr.lun); 1054 } 1055 1056 if (array_entry->dev_res_addr.bus >= IPR_MAX_NUM_BUSES) { 1057 ipr_err("Expected Location: unknown\n"); 1058 } else { 1059 ipr_err("Expected Location: %d:%d:%d:%d\n", 1060 ioa_cfg->host->host_no, 1061 array_entry->expected_dev_res_addr.bus, 1062 array_entry->expected_dev_res_addr.target, 1063 array_entry->expected_dev_res_addr.lun); 1064 } 1065 1066 ipr_err_separator; 1067 1068 if (i == 9) 1069 array_entry = error->array_member2; 1070 else 1071 array_entry++; 1072 } 1073 } 1074 1075 /** 1076 * ipr_log_generic_error - Log an adapter error. 1077 * @ioa_cfg: ioa config struct 1078 * @hostrcb: hostrcb struct 1079 * 1080 * Return value: 1081 * none 1082 **/ 1083 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, 1084 struct ipr_hostrcb *hostrcb) 1085 { 1086 int i; 1087 int ioa_data_len = be32_to_cpu(hostrcb->hcam.length); 1088 1089 if (ioa_data_len == 0) 1090 return; 1091 1092 ipr_err("IOA Error Data:\n"); 1093 ipr_err("Offset 0 1 2 3 4 5 6 7 8 9 A B C D E F\n"); 1094 1095 for (i = 0; i < ioa_data_len / 4; i += 4) { 1096 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 1097 be32_to_cpu(hostrcb->hcam.u.raw.data[i]), 1098 be32_to_cpu(hostrcb->hcam.u.raw.data[i+1]), 1099 be32_to_cpu(hostrcb->hcam.u.raw.data[i+2]), 1100 be32_to_cpu(hostrcb->hcam.u.raw.data[i+3])); 1101 } 1102 } 1103 1104 /** 1105 * ipr_get_error - Find the specfied IOASC in the ipr_error_table. 1106 * @ioasc: IOASC 1107 * 1108 * This function will return the index of into the ipr_error_table 1109 * for the specified IOASC. If the IOASC is not in the table, 1110 * 0 will be returned, which points to the entry used for unknown errors. 1111 * 1112 * Return value: 1113 * index into the ipr_error_table 1114 **/ 1115 static u32 ipr_get_error(u32 ioasc) 1116 { 1117 int i; 1118 1119 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) 1120 if (ipr_error_table[i].ioasc == ioasc) 1121 return i; 1122 1123 return 0; 1124 } 1125 1126 /** 1127 * ipr_handle_log_data - Log an adapter error. 1128 * @ioa_cfg: ioa config struct 1129 * @hostrcb: hostrcb struct 1130 * 1131 * This function logs an adapter error to the system. 1132 * 1133 * Return value: 1134 * none 1135 **/ 1136 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 1137 struct ipr_hostrcb *hostrcb) 1138 { 1139 u32 ioasc; 1140 int error_index; 1141 1142 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) 1143 return; 1144 1145 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) 1146 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); 1147 1148 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc); 1149 1150 if (ioasc == IPR_IOASC_BUS_WAS_RESET || 1151 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) { 1152 /* Tell the midlayer we had a bus reset so it will handle the UA properly */ 1153 scsi_report_bus_reset(ioa_cfg->host, 1154 hostrcb->hcam.u.error.failing_dev_res_addr.bus); 1155 } 1156 1157 error_index = ipr_get_error(ioasc); 1158 1159 if (!ipr_error_table[error_index].log_hcam) 1160 return; 1161 1162 if (ipr_is_device(&hostrcb->hcam.u.error.failing_dev_res_addr)) { 1163 ipr_res_err(ioa_cfg, hostrcb->hcam.u.error.failing_dev_res_addr, 1164 "%s\n", ipr_error_table[error_index].error); 1165 } else { 1166 dev_err(&ioa_cfg->pdev->dev, "%s\n", 1167 ipr_error_table[error_index].error); 1168 } 1169 1170 /* Set indication we have logged an error */ 1171 ioa_cfg->errors_logged++; 1172 1173 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 1174 return; 1175 1176 switch (hostrcb->hcam.overlay_id) { 1177 case IPR_HOST_RCB_OVERLAY_ID_1: 1178 ipr_log_generic_error(ioa_cfg, hostrcb); 1179 break; 1180 case IPR_HOST_RCB_OVERLAY_ID_2: 1181 ipr_log_cache_error(ioa_cfg, hostrcb); 1182 break; 1183 case IPR_HOST_RCB_OVERLAY_ID_3: 1184 ipr_log_config_error(ioa_cfg, hostrcb); 1185 break; 1186 case IPR_HOST_RCB_OVERLAY_ID_4: 1187 case IPR_HOST_RCB_OVERLAY_ID_6: 1188 ipr_log_array_error(ioa_cfg, hostrcb); 1189 break; 1190 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: 1191 ipr_log_generic_error(ioa_cfg, hostrcb); 1192 break; 1193 default: 1194 dev_err(&ioa_cfg->pdev->dev, 1195 "Unknown error received. Overlay ID: %d\n", 1196 hostrcb->hcam.overlay_id); 1197 break; 1198 } 1199 } 1200 1201 /** 1202 * ipr_process_error - Op done function for an adapter error log. 1203 * @ipr_cmd: ipr command struct 1204 * 1205 * This function is the op done function for an error log host 1206 * controlled async from the adapter. It will log the error and 1207 * send the HCAM back to the adapter. 1208 * 1209 * Return value: 1210 * none 1211 **/ 1212 static void ipr_process_error(struct ipr_cmnd *ipr_cmd) 1213 { 1214 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1215 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 1216 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 1217 1218 list_del(&hostrcb->queue); 1219 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 1220 1221 if (!ioasc) { 1222 ipr_handle_log_data(ioa_cfg, hostrcb); 1223 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) { 1224 dev_err(&ioa_cfg->pdev->dev, 1225 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 1226 } 1227 1228 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 1229 } 1230 1231 /** 1232 * ipr_timeout - An internally generated op has timed out. 1233 * @ipr_cmd: ipr command struct 1234 * 1235 * This function blocks host requests and initiates an 1236 * adapter reset. 1237 * 1238 * Return value: 1239 * none 1240 **/ 1241 static void ipr_timeout(struct ipr_cmnd *ipr_cmd) 1242 { 1243 unsigned long lock_flags = 0; 1244 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1245 1246 ENTER; 1247 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1248 1249 ioa_cfg->errors_logged++; 1250 dev_err(&ioa_cfg->pdev->dev, 1251 "Adapter being reset due to command timeout.\n"); 1252 1253 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 1254 ioa_cfg->sdt_state = GET_DUMP; 1255 1256 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) 1257 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 1258 1259 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1260 LEAVE; 1261 } 1262 1263 /** 1264 * ipr_oper_timeout - Adapter timed out transitioning to operational 1265 * @ipr_cmd: ipr command struct 1266 * 1267 * This function blocks host requests and initiates an 1268 * adapter reset. 1269 * 1270 * Return value: 1271 * none 1272 **/ 1273 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) 1274 { 1275 unsigned long lock_flags = 0; 1276 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1277 1278 ENTER; 1279 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1280 1281 ioa_cfg->errors_logged++; 1282 dev_err(&ioa_cfg->pdev->dev, 1283 "Adapter timed out transitioning to operational.\n"); 1284 1285 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 1286 ioa_cfg->sdt_state = GET_DUMP; 1287 1288 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { 1289 if (ipr_fastfail) 1290 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 1291 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 1292 } 1293 1294 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1295 LEAVE; 1296 } 1297 1298 /** 1299 * ipr_reset_reload - Reset/Reload the IOA 1300 * @ioa_cfg: ioa config struct 1301 * @shutdown_type: shutdown type 1302 * 1303 * This function resets the adapter and re-initializes it. 1304 * This function assumes that all new host commands have been stopped. 1305 * Return value: 1306 * SUCCESS / FAILED 1307 **/ 1308 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg, 1309 enum ipr_shutdown_type shutdown_type) 1310 { 1311 if (!ioa_cfg->in_reset_reload) 1312 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 1313 1314 spin_unlock_irq(ioa_cfg->host->host_lock); 1315 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 1316 spin_lock_irq(ioa_cfg->host->host_lock); 1317 1318 /* If we got hit with a host reset while we were already resetting 1319 the adapter for some reason, and the reset failed. */ 1320 if (ioa_cfg->ioa_is_dead) { 1321 ipr_trace; 1322 return FAILED; 1323 } 1324 1325 return SUCCESS; 1326 } 1327 1328 /** 1329 * ipr_find_ses_entry - Find matching SES in SES table 1330 * @res: resource entry struct of SES 1331 * 1332 * Return value: 1333 * pointer to SES table entry / NULL on failure 1334 **/ 1335 static const struct ipr_ses_table_entry * 1336 ipr_find_ses_entry(struct ipr_resource_entry *res) 1337 { 1338 int i, j, matches; 1339 const struct ipr_ses_table_entry *ste = ipr_ses_table; 1340 1341 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { 1342 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { 1343 if (ste->compare_product_id_byte[j] == 'X') { 1344 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j]) 1345 matches++; 1346 else 1347 break; 1348 } else 1349 matches++; 1350 } 1351 1352 if (matches == IPR_PROD_ID_LEN) 1353 return ste; 1354 } 1355 1356 return NULL; 1357 } 1358 1359 /** 1360 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus 1361 * @ioa_cfg: ioa config struct 1362 * @bus: SCSI bus 1363 * @bus_width: bus width 1364 * 1365 * Return value: 1366 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz 1367 * For a 2-byte wide SCSI bus, the maximum transfer speed is 1368 * twice the maximum transfer rate (e.g. for a wide enabled bus, 1369 * max 160MHz = max 320MB/sec). 1370 **/ 1371 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) 1372 { 1373 struct ipr_resource_entry *res; 1374 const struct ipr_ses_table_entry *ste; 1375 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); 1376 1377 /* Loop through each config table entry in the config table buffer */ 1378 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1379 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data))) 1380 continue; 1381 1382 if (bus != res->cfgte.res_addr.bus) 1383 continue; 1384 1385 if (!(ste = ipr_find_ses_entry(res))) 1386 continue; 1387 1388 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); 1389 } 1390 1391 return max_xfer_rate; 1392 } 1393 1394 /** 1395 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA 1396 * @ioa_cfg: ioa config struct 1397 * @max_delay: max delay in micro-seconds to wait 1398 * 1399 * Waits for an IODEBUG ACK from the IOA, doing busy looping. 1400 * 1401 * Return value: 1402 * 0 on success / other on failure 1403 **/ 1404 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) 1405 { 1406 volatile u32 pcii_reg; 1407 int delay = 1; 1408 1409 /* Read interrupt reg until IOA signals IO Debug Acknowledge */ 1410 while (delay < max_delay) { 1411 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 1412 1413 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) 1414 return 0; 1415 1416 /* udelay cannot be used if delay is more than a few milliseconds */ 1417 if ((delay / 1000) > MAX_UDELAY_MS) 1418 mdelay(delay / 1000); 1419 else 1420 udelay(delay); 1421 1422 delay += delay; 1423 } 1424 return -EIO; 1425 } 1426 1427 /** 1428 * ipr_get_ldump_data_section - Dump IOA memory 1429 * @ioa_cfg: ioa config struct 1430 * @start_addr: adapter address to dump 1431 * @dest: destination kernel buffer 1432 * @length_in_words: length to dump in 4 byte words 1433 * 1434 * Return value: 1435 * 0 on success / -EIO on failure 1436 **/ 1437 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, 1438 u32 start_addr, 1439 __be32 *dest, u32 length_in_words) 1440 { 1441 volatile u32 temp_pcii_reg; 1442 int i, delay = 0; 1443 1444 /* Write IOA interrupt reg starting LDUMP state */ 1445 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), 1446 ioa_cfg->regs.set_uproc_interrupt_reg); 1447 1448 /* Wait for IO debug acknowledge */ 1449 if (ipr_wait_iodbg_ack(ioa_cfg, 1450 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { 1451 dev_err(&ioa_cfg->pdev->dev, 1452 "IOA dump long data transfer timeout\n"); 1453 return -EIO; 1454 } 1455 1456 /* Signal LDUMP interlocked - clear IO debug ack */ 1457 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1458 ioa_cfg->regs.clr_interrupt_reg); 1459 1460 /* Write Mailbox with starting address */ 1461 writel(start_addr, ioa_cfg->ioa_mailbox); 1462 1463 /* Signal address valid - clear IOA Reset alert */ 1464 writel(IPR_UPROCI_RESET_ALERT, 1465 ioa_cfg->regs.clr_uproc_interrupt_reg); 1466 1467 for (i = 0; i < length_in_words; i++) { 1468 /* Wait for IO debug acknowledge */ 1469 if (ipr_wait_iodbg_ack(ioa_cfg, 1470 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { 1471 dev_err(&ioa_cfg->pdev->dev, 1472 "IOA dump short data transfer timeout\n"); 1473 return -EIO; 1474 } 1475 1476 /* Read data from mailbox and increment destination pointer */ 1477 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); 1478 dest++; 1479 1480 /* For all but the last word of data, signal data received */ 1481 if (i < (length_in_words - 1)) { 1482 /* Signal dump data received - Clear IO debug Ack */ 1483 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1484 ioa_cfg->regs.clr_interrupt_reg); 1485 } 1486 } 1487 1488 /* Signal end of block transfer. Set reset alert then clear IO debug ack */ 1489 writel(IPR_UPROCI_RESET_ALERT, 1490 ioa_cfg->regs.set_uproc_interrupt_reg); 1491 1492 writel(IPR_UPROCI_IO_DEBUG_ALERT, 1493 ioa_cfg->regs.clr_uproc_interrupt_reg); 1494 1495 /* Signal dump data received - Clear IO debug Ack */ 1496 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1497 ioa_cfg->regs.clr_interrupt_reg); 1498 1499 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ 1500 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { 1501 temp_pcii_reg = 1502 readl(ioa_cfg->regs.sense_uproc_interrupt_reg); 1503 1504 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) 1505 return 0; 1506 1507 udelay(10); 1508 delay += 10; 1509 } 1510 1511 return 0; 1512 } 1513 1514 #ifdef CONFIG_SCSI_IPR_DUMP 1515 /** 1516 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer 1517 * @ioa_cfg: ioa config struct 1518 * @pci_address: adapter address 1519 * @length: length of data to copy 1520 * 1521 * Copy data from PCI adapter to kernel buffer. 1522 * Note: length MUST be a 4 byte multiple 1523 * Return value: 1524 * 0 on success / other on failure 1525 **/ 1526 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, 1527 unsigned long pci_address, u32 length) 1528 { 1529 int bytes_copied = 0; 1530 int cur_len, rc, rem_len, rem_page_len; 1531 __be32 *page; 1532 unsigned long lock_flags = 0; 1533 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; 1534 1535 while (bytes_copied < length && 1536 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) { 1537 if (ioa_dump->page_offset >= PAGE_SIZE || 1538 ioa_dump->page_offset == 0) { 1539 page = (__be32 *)__get_free_page(GFP_ATOMIC); 1540 1541 if (!page) { 1542 ipr_trace; 1543 return bytes_copied; 1544 } 1545 1546 ioa_dump->page_offset = 0; 1547 ioa_dump->ioa_data[ioa_dump->next_page_index] = page; 1548 ioa_dump->next_page_index++; 1549 } else 1550 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; 1551 1552 rem_len = length - bytes_copied; 1553 rem_page_len = PAGE_SIZE - ioa_dump->page_offset; 1554 cur_len = min(rem_len, rem_page_len); 1555 1556 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1557 if (ioa_cfg->sdt_state == ABORT_DUMP) { 1558 rc = -EIO; 1559 } else { 1560 rc = ipr_get_ldump_data_section(ioa_cfg, 1561 pci_address + bytes_copied, 1562 &page[ioa_dump->page_offset / 4], 1563 (cur_len / sizeof(u32))); 1564 } 1565 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1566 1567 if (!rc) { 1568 ioa_dump->page_offset += cur_len; 1569 bytes_copied += cur_len; 1570 } else { 1571 ipr_trace; 1572 break; 1573 } 1574 schedule(); 1575 } 1576 1577 return bytes_copied; 1578 } 1579 1580 /** 1581 * ipr_init_dump_entry_hdr - Initialize a dump entry header. 1582 * @hdr: dump entry header struct 1583 * 1584 * Return value: 1585 * nothing 1586 **/ 1587 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) 1588 { 1589 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; 1590 hdr->num_elems = 1; 1591 hdr->offset = sizeof(*hdr); 1592 hdr->status = IPR_DUMP_STATUS_SUCCESS; 1593 } 1594 1595 /** 1596 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. 1597 * @ioa_cfg: ioa config struct 1598 * @driver_dump: driver dump struct 1599 * 1600 * Return value: 1601 * nothing 1602 **/ 1603 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, 1604 struct ipr_driver_dump *driver_dump) 1605 { 1606 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 1607 1608 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); 1609 driver_dump->ioa_type_entry.hdr.len = 1610 sizeof(struct ipr_dump_ioa_type_entry) - 1611 sizeof(struct ipr_dump_entry_header); 1612 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 1613 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; 1614 driver_dump->ioa_type_entry.type = ioa_cfg->type; 1615 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | 1616 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | 1617 ucode_vpd->minor_release[1]; 1618 driver_dump->hdr.num_entries++; 1619 } 1620 1621 /** 1622 * ipr_dump_version_data - Fill in the driver version in the dump. 1623 * @ioa_cfg: ioa config struct 1624 * @driver_dump: driver dump struct 1625 * 1626 * Return value: 1627 * nothing 1628 **/ 1629 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, 1630 struct ipr_driver_dump *driver_dump) 1631 { 1632 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); 1633 driver_dump->version_entry.hdr.len = 1634 sizeof(struct ipr_dump_version_entry) - 1635 sizeof(struct ipr_dump_entry_header); 1636 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 1637 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; 1638 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); 1639 driver_dump->hdr.num_entries++; 1640 } 1641 1642 /** 1643 * ipr_dump_trace_data - Fill in the IOA trace in the dump. 1644 * @ioa_cfg: ioa config struct 1645 * @driver_dump: driver dump struct 1646 * 1647 * Return value: 1648 * nothing 1649 **/ 1650 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, 1651 struct ipr_driver_dump *driver_dump) 1652 { 1653 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); 1654 driver_dump->trace_entry.hdr.len = 1655 sizeof(struct ipr_dump_trace_entry) - 1656 sizeof(struct ipr_dump_entry_header); 1657 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 1658 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; 1659 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); 1660 driver_dump->hdr.num_entries++; 1661 } 1662 1663 /** 1664 * ipr_dump_location_data - Fill in the IOA location in the dump. 1665 * @ioa_cfg: ioa config struct 1666 * @driver_dump: driver dump struct 1667 * 1668 * Return value: 1669 * nothing 1670 **/ 1671 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, 1672 struct ipr_driver_dump *driver_dump) 1673 { 1674 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); 1675 driver_dump->location_entry.hdr.len = 1676 sizeof(struct ipr_dump_location_entry) - 1677 sizeof(struct ipr_dump_entry_header); 1678 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 1679 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; 1680 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id); 1681 driver_dump->hdr.num_entries++; 1682 } 1683 1684 /** 1685 * ipr_get_ioa_dump - Perform a dump of the driver and adapter. 1686 * @ioa_cfg: ioa config struct 1687 * @dump: dump struct 1688 * 1689 * Return value: 1690 * nothing 1691 **/ 1692 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) 1693 { 1694 unsigned long start_addr, sdt_word; 1695 unsigned long lock_flags = 0; 1696 struct ipr_driver_dump *driver_dump = &dump->driver_dump; 1697 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; 1698 u32 num_entries, start_off, end_off; 1699 u32 bytes_to_copy, bytes_copied, rc; 1700 struct ipr_sdt *sdt; 1701 int i; 1702 1703 ENTER; 1704 1705 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1706 1707 if (ioa_cfg->sdt_state != GET_DUMP) { 1708 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1709 return; 1710 } 1711 1712 start_addr = readl(ioa_cfg->ioa_mailbox); 1713 1714 if (!ipr_sdt_is_fmt2(start_addr)) { 1715 dev_err(&ioa_cfg->pdev->dev, 1716 "Invalid dump table format: %lx\n", start_addr); 1717 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1718 return; 1719 } 1720 1721 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); 1722 1723 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; 1724 1725 /* Initialize the overall dump header */ 1726 driver_dump->hdr.len = sizeof(struct ipr_driver_dump); 1727 driver_dump->hdr.num_entries = 1; 1728 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); 1729 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; 1730 driver_dump->hdr.os = IPR_DUMP_OS_LINUX; 1731 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; 1732 1733 ipr_dump_version_data(ioa_cfg, driver_dump); 1734 ipr_dump_location_data(ioa_cfg, driver_dump); 1735 ipr_dump_ioa_type_data(ioa_cfg, driver_dump); 1736 ipr_dump_trace_data(ioa_cfg, driver_dump); 1737 1738 /* Update dump_header */ 1739 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); 1740 1741 /* IOA Dump entry */ 1742 ipr_init_dump_entry_hdr(&ioa_dump->hdr); 1743 ioa_dump->format = IPR_SDT_FMT2; 1744 ioa_dump->hdr.len = 0; 1745 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 1746 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; 1747 1748 /* First entries in sdt are actually a list of dump addresses and 1749 lengths to gather the real dump data. sdt represents the pointer 1750 to the ioa generated dump table. Dump data will be extracted based 1751 on entries in this table */ 1752 sdt = &ioa_dump->sdt; 1753 1754 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, 1755 sizeof(struct ipr_sdt) / sizeof(__be32)); 1756 1757 /* Smart Dump table is ready to use and the first entry is valid */ 1758 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) { 1759 dev_err(&ioa_cfg->pdev->dev, 1760 "Dump of IOA failed. Dump table not valid: %d, %X.\n", 1761 rc, be32_to_cpu(sdt->hdr.state)); 1762 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; 1763 ioa_cfg->sdt_state = DUMP_OBTAINED; 1764 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1765 return; 1766 } 1767 1768 num_entries = be32_to_cpu(sdt->hdr.num_entries_used); 1769 1770 if (num_entries > IPR_NUM_SDT_ENTRIES) 1771 num_entries = IPR_NUM_SDT_ENTRIES; 1772 1773 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1774 1775 for (i = 0; i < num_entries; i++) { 1776 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) { 1777 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 1778 break; 1779 } 1780 1781 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { 1782 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset); 1783 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; 1784 end_off = be32_to_cpu(sdt->entry[i].end_offset); 1785 1786 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) { 1787 bytes_to_copy = end_off - start_off; 1788 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) { 1789 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; 1790 continue; 1791 } 1792 1793 /* Copy data from adapter to driver buffers */ 1794 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, 1795 bytes_to_copy); 1796 1797 ioa_dump->hdr.len += bytes_copied; 1798 1799 if (bytes_copied != bytes_to_copy) { 1800 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 1801 break; 1802 } 1803 } 1804 } 1805 } 1806 1807 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); 1808 1809 /* Update dump_header */ 1810 driver_dump->hdr.len += ioa_dump->hdr.len; 1811 wmb(); 1812 ioa_cfg->sdt_state = DUMP_OBTAINED; 1813 LEAVE; 1814 } 1815 1816 #else 1817 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0) 1818 #endif 1819 1820 /** 1821 * ipr_release_dump - Free adapter dump memory 1822 * @kref: kref struct 1823 * 1824 * Return value: 1825 * nothing 1826 **/ 1827 static void ipr_release_dump(struct kref *kref) 1828 { 1829 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref); 1830 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; 1831 unsigned long lock_flags = 0; 1832 int i; 1833 1834 ENTER; 1835 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1836 ioa_cfg->dump = NULL; 1837 ioa_cfg->sdt_state = INACTIVE; 1838 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1839 1840 for (i = 0; i < dump->ioa_dump.next_page_index; i++) 1841 free_page((unsigned long) dump->ioa_dump.ioa_data[i]); 1842 1843 kfree(dump); 1844 LEAVE; 1845 } 1846 1847 /** 1848 * ipr_worker_thread - Worker thread 1849 * @data: ioa config struct 1850 * 1851 * Called at task level from a work thread. This function takes care 1852 * of adding and removing device from the mid-layer as configuration 1853 * changes are detected by the adapter. 1854 * 1855 * Return value: 1856 * nothing 1857 **/ 1858 static void ipr_worker_thread(void *data) 1859 { 1860 unsigned long lock_flags; 1861 struct ipr_resource_entry *res; 1862 struct scsi_device *sdev; 1863 struct ipr_dump *dump; 1864 struct ipr_ioa_cfg *ioa_cfg = data; 1865 u8 bus, target, lun; 1866 int did_work; 1867 1868 ENTER; 1869 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1870 1871 if (ioa_cfg->sdt_state == GET_DUMP) { 1872 dump = ioa_cfg->dump; 1873 if (!dump) { 1874 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1875 return; 1876 } 1877 kref_get(&dump->kref); 1878 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1879 ipr_get_ioa_dump(ioa_cfg, dump); 1880 kref_put(&dump->kref, ipr_release_dump); 1881 1882 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1883 if (ioa_cfg->sdt_state == DUMP_OBTAINED) 1884 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 1885 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1886 return; 1887 } 1888 1889 restart: 1890 do { 1891 did_work = 0; 1892 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) { 1893 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1894 return; 1895 } 1896 1897 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1898 if (res->del_from_ml && res->sdev) { 1899 did_work = 1; 1900 sdev = res->sdev; 1901 if (!scsi_device_get(sdev)) { 1902 res->sdev = NULL; 1903 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 1904 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1905 scsi_remove_device(sdev); 1906 scsi_device_put(sdev); 1907 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1908 } 1909 break; 1910 } 1911 } 1912 } while(did_work); 1913 1914 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1915 if (res->add_to_ml) { 1916 bus = res->cfgte.res_addr.bus; 1917 target = res->cfgte.res_addr.target; 1918 lun = res->cfgte.res_addr.lun; 1919 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1920 scsi_add_device(ioa_cfg->host, bus, target, lun); 1921 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1922 goto restart; 1923 } 1924 } 1925 1926 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1927 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE, NULL); 1928 LEAVE; 1929 } 1930 1931 #ifdef CONFIG_SCSI_IPR_TRACE 1932 /** 1933 * ipr_read_trace - Dump the adapter trace 1934 * @kobj: kobject struct 1935 * @buf: buffer 1936 * @off: offset 1937 * @count: buffer size 1938 * 1939 * Return value: 1940 * number of bytes printed to buffer 1941 **/ 1942 static ssize_t ipr_read_trace(struct kobject *kobj, char *buf, 1943 loff_t off, size_t count) 1944 { 1945 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 1946 struct Scsi_Host *shost = class_to_shost(cdev); 1947 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 1948 unsigned long lock_flags = 0; 1949 int size = IPR_TRACE_SIZE; 1950 char *src = (char *)ioa_cfg->trace; 1951 1952 if (off > size) 1953 return 0; 1954 if (off + count > size) { 1955 size -= off; 1956 count = size; 1957 } 1958 1959 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1960 memcpy(buf, &src[off], count); 1961 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1962 return count; 1963 } 1964 1965 static struct bin_attribute ipr_trace_attr = { 1966 .attr = { 1967 .name = "trace", 1968 .mode = S_IRUGO, 1969 }, 1970 .size = 0, 1971 .read = ipr_read_trace, 1972 }; 1973 #endif 1974 1975 /** 1976 * ipr_show_fw_version - Show the firmware version 1977 * @class_dev: class device struct 1978 * @buf: buffer 1979 * 1980 * Return value: 1981 * number of bytes printed to buffer 1982 **/ 1983 static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf) 1984 { 1985 struct Scsi_Host *shost = class_to_shost(class_dev); 1986 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 1987 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 1988 unsigned long lock_flags = 0; 1989 int len; 1990 1991 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1992 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 1993 ucode_vpd->major_release, ucode_vpd->card_type, 1994 ucode_vpd->minor_release[0], 1995 ucode_vpd->minor_release[1]); 1996 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1997 return len; 1998 } 1999 2000 static struct class_device_attribute ipr_fw_version_attr = { 2001 .attr = { 2002 .name = "fw_version", 2003 .mode = S_IRUGO, 2004 }, 2005 .show = ipr_show_fw_version, 2006 }; 2007 2008 /** 2009 * ipr_show_log_level - Show the adapter's error logging level 2010 * @class_dev: class device struct 2011 * @buf: buffer 2012 * 2013 * Return value: 2014 * number of bytes printed to buffer 2015 **/ 2016 static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf) 2017 { 2018 struct Scsi_Host *shost = class_to_shost(class_dev); 2019 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2020 unsigned long lock_flags = 0; 2021 int len; 2022 2023 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2024 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 2025 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2026 return len; 2027 } 2028 2029 /** 2030 * ipr_store_log_level - Change the adapter's error logging level 2031 * @class_dev: class device struct 2032 * @buf: buffer 2033 * 2034 * Return value: 2035 * number of bytes printed to buffer 2036 **/ 2037 static ssize_t ipr_store_log_level(struct class_device *class_dev, 2038 const char *buf, size_t count) 2039 { 2040 struct Scsi_Host *shost = class_to_shost(class_dev); 2041 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2042 unsigned long lock_flags = 0; 2043 2044 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2045 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 2046 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2047 return strlen(buf); 2048 } 2049 2050 static struct class_device_attribute ipr_log_level_attr = { 2051 .attr = { 2052 .name = "log_level", 2053 .mode = S_IRUGO | S_IWUSR, 2054 }, 2055 .show = ipr_show_log_level, 2056 .store = ipr_store_log_level 2057 }; 2058 2059 /** 2060 * ipr_store_diagnostics - IOA Diagnostics interface 2061 * @class_dev: class_device struct 2062 * @buf: buffer 2063 * @count: buffer size 2064 * 2065 * This function will reset the adapter and wait a reasonable 2066 * amount of time for any errors that the adapter might log. 2067 * 2068 * Return value: 2069 * count on success / other on failure 2070 **/ 2071 static ssize_t ipr_store_diagnostics(struct class_device *class_dev, 2072 const char *buf, size_t count) 2073 { 2074 struct Scsi_Host *shost = class_to_shost(class_dev); 2075 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2076 unsigned long lock_flags = 0; 2077 int rc = count; 2078 2079 if (!capable(CAP_SYS_ADMIN)) 2080 return -EACCES; 2081 2082 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2083 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2084 ioa_cfg->errors_logged = 0; 2085 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2086 2087 if (ioa_cfg->in_reset_reload) { 2088 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2089 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2090 2091 /* Wait for a second for any errors to be logged */ 2092 msleep(1000); 2093 } else { 2094 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2095 return -EIO; 2096 } 2097 2098 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2099 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 2100 rc = -EIO; 2101 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2102 2103 return rc; 2104 } 2105 2106 static struct class_device_attribute ipr_diagnostics_attr = { 2107 .attr = { 2108 .name = "run_diagnostics", 2109 .mode = S_IWUSR, 2110 }, 2111 .store = ipr_store_diagnostics 2112 }; 2113 2114 /** 2115 * ipr_store_reset_adapter - Reset the adapter 2116 * @class_dev: class_device struct 2117 * @buf: buffer 2118 * @count: buffer size 2119 * 2120 * This function will reset the adapter. 2121 * 2122 * Return value: 2123 * count on success / other on failure 2124 **/ 2125 static ssize_t ipr_store_reset_adapter(struct class_device *class_dev, 2126 const char *buf, size_t count) 2127 { 2128 struct Scsi_Host *shost = class_to_shost(class_dev); 2129 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2130 unsigned long lock_flags; 2131 int result = count; 2132 2133 if (!capable(CAP_SYS_ADMIN)) 2134 return -EACCES; 2135 2136 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2137 if (!ioa_cfg->in_reset_reload) 2138 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2139 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2140 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2141 2142 return result; 2143 } 2144 2145 static struct class_device_attribute ipr_ioa_reset_attr = { 2146 .attr = { 2147 .name = "reset_host", 2148 .mode = S_IWUSR, 2149 }, 2150 .store = ipr_store_reset_adapter 2151 }; 2152 2153 /** 2154 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 2155 * @buf_len: buffer length 2156 * 2157 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 2158 * list to use for microcode download 2159 * 2160 * Return value: 2161 * pointer to sglist / NULL on failure 2162 **/ 2163 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 2164 { 2165 int sg_size, order, bsize_elem, num_elem, i, j; 2166 struct ipr_sglist *sglist; 2167 struct scatterlist *scatterlist; 2168 struct page *page; 2169 2170 /* Get the minimum size per scatter/gather element */ 2171 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 2172 2173 /* Get the actual size per element */ 2174 order = get_order(sg_size); 2175 2176 /* Determine the actual number of bytes per element */ 2177 bsize_elem = PAGE_SIZE * (1 << order); 2178 2179 /* Determine the actual number of sg entries needed */ 2180 if (buf_len % bsize_elem) 2181 num_elem = (buf_len / bsize_elem) + 1; 2182 else 2183 num_elem = buf_len / bsize_elem; 2184 2185 /* Allocate a scatter/gather list for the DMA */ 2186 sglist = kmalloc(sizeof(struct ipr_sglist) + 2187 (sizeof(struct scatterlist) * (num_elem - 1)), 2188 GFP_KERNEL); 2189 2190 if (sglist == NULL) { 2191 ipr_trace; 2192 return NULL; 2193 } 2194 2195 memset(sglist, 0, sizeof(struct ipr_sglist) + 2196 (sizeof(struct scatterlist) * (num_elem - 1))); 2197 2198 scatterlist = sglist->scatterlist; 2199 2200 sglist->order = order; 2201 sglist->num_sg = num_elem; 2202 2203 /* Allocate a bunch of sg elements */ 2204 for (i = 0; i < num_elem; i++) { 2205 page = alloc_pages(GFP_KERNEL, order); 2206 if (!page) { 2207 ipr_trace; 2208 2209 /* Free up what we already allocated */ 2210 for (j = i - 1; j >= 0; j--) 2211 __free_pages(scatterlist[j].page, order); 2212 kfree(sglist); 2213 return NULL; 2214 } 2215 2216 scatterlist[i].page = page; 2217 } 2218 2219 return sglist; 2220 } 2221 2222 /** 2223 * ipr_free_ucode_buffer - Frees a microcode download buffer 2224 * @p_dnld: scatter/gather list pointer 2225 * 2226 * Free a DMA'able ucode download buffer previously allocated with 2227 * ipr_alloc_ucode_buffer 2228 * 2229 * Return value: 2230 * nothing 2231 **/ 2232 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 2233 { 2234 int i; 2235 2236 for (i = 0; i < sglist->num_sg; i++) 2237 __free_pages(sglist->scatterlist[i].page, sglist->order); 2238 2239 kfree(sglist); 2240 } 2241 2242 /** 2243 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 2244 * @sglist: scatter/gather list pointer 2245 * @buffer: buffer pointer 2246 * @len: buffer length 2247 * 2248 * Copy a microcode image from a user buffer into a buffer allocated by 2249 * ipr_alloc_ucode_buffer 2250 * 2251 * Return value: 2252 * 0 on success / other on failure 2253 **/ 2254 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 2255 u8 *buffer, u32 len) 2256 { 2257 int bsize_elem, i, result = 0; 2258 struct scatterlist *scatterlist; 2259 void *kaddr; 2260 2261 /* Determine the actual number of bytes per element */ 2262 bsize_elem = PAGE_SIZE * (1 << sglist->order); 2263 2264 scatterlist = sglist->scatterlist; 2265 2266 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { 2267 kaddr = kmap(scatterlist[i].page); 2268 memcpy(kaddr, buffer, bsize_elem); 2269 kunmap(scatterlist[i].page); 2270 2271 scatterlist[i].length = bsize_elem; 2272 2273 if (result != 0) { 2274 ipr_trace; 2275 return result; 2276 } 2277 } 2278 2279 if (len % bsize_elem) { 2280 kaddr = kmap(scatterlist[i].page); 2281 memcpy(kaddr, buffer, len % bsize_elem); 2282 kunmap(scatterlist[i].page); 2283 2284 scatterlist[i].length = len % bsize_elem; 2285 } 2286 2287 sglist->buffer_len = len; 2288 return result; 2289 } 2290 2291 /** 2292 * ipr_map_ucode_buffer - Map a microcode download buffer 2293 * @ipr_cmd: ipr command struct 2294 * @sglist: scatter/gather list 2295 * @len: total length of download buffer 2296 * 2297 * Maps a microcode download scatter/gather list for DMA and 2298 * builds the IOADL. 2299 * 2300 * Return value: 2301 * 0 on success / -EIO on failure 2302 **/ 2303 static int ipr_map_ucode_buffer(struct ipr_cmnd *ipr_cmd, 2304 struct ipr_sglist *sglist, int len) 2305 { 2306 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2307 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 2308 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 2309 struct scatterlist *scatterlist = sglist->scatterlist; 2310 int i; 2311 2312 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, scatterlist, 2313 sglist->num_sg, DMA_TO_DEVICE); 2314 2315 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 2316 ioarcb->write_data_transfer_length = cpu_to_be32(len); 2317 ioarcb->write_ioadl_len = 2318 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 2319 2320 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 2321 ioadl[i].flags_and_data_len = 2322 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); 2323 ioadl[i].address = 2324 cpu_to_be32(sg_dma_address(&scatterlist[i])); 2325 } 2326 2327 if (likely(ipr_cmd->dma_use_sg)) { 2328 ioadl[i-1].flags_and_data_len |= 2329 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 2330 } 2331 else { 2332 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 2333 return -EIO; 2334 } 2335 2336 return 0; 2337 } 2338 2339 /** 2340 * ipr_store_update_fw - Update the firmware on the adapter 2341 * @class_dev: class_device struct 2342 * @buf: buffer 2343 * @count: buffer size 2344 * 2345 * This function will update the firmware on the adapter. 2346 * 2347 * Return value: 2348 * count on success / other on failure 2349 **/ 2350 static ssize_t ipr_store_update_fw(struct class_device *class_dev, 2351 const char *buf, size_t count) 2352 { 2353 struct Scsi_Host *shost = class_to_shost(class_dev); 2354 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2355 struct ipr_ucode_image_header *image_hdr; 2356 const struct firmware *fw_entry; 2357 struct ipr_sglist *sglist; 2358 unsigned long lock_flags; 2359 char fname[100]; 2360 char *src; 2361 int len, result, dnld_size; 2362 2363 if (!capable(CAP_SYS_ADMIN)) 2364 return -EACCES; 2365 2366 len = snprintf(fname, 99, "%s", buf); 2367 fname[len-1] = '\0'; 2368 2369 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 2370 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 2371 return -EIO; 2372 } 2373 2374 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 2375 2376 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size || 2377 (ioa_cfg->vpd_cbs->page3_data.card_type && 2378 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) { 2379 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n"); 2380 release_firmware(fw_entry); 2381 return -EINVAL; 2382 } 2383 2384 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 2385 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 2386 sglist = ipr_alloc_ucode_buffer(dnld_size); 2387 2388 if (!sglist) { 2389 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 2390 release_firmware(fw_entry); 2391 return -ENOMEM; 2392 } 2393 2394 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 2395 2396 if (result) { 2397 dev_err(&ioa_cfg->pdev->dev, 2398 "Microcode buffer copy to DMA buffer failed\n"); 2399 ipr_free_ucode_buffer(sglist); 2400 release_firmware(fw_entry); 2401 return result; 2402 } 2403 2404 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2405 2406 if (ioa_cfg->ucode_sglist) { 2407 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2408 dev_err(&ioa_cfg->pdev->dev, 2409 "Microcode download already in progress\n"); 2410 ipr_free_ucode_buffer(sglist); 2411 release_firmware(fw_entry); 2412 return -EIO; 2413 } 2414 2415 ioa_cfg->ucode_sglist = sglist; 2416 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2417 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2418 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2419 2420 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2421 ioa_cfg->ucode_sglist = NULL; 2422 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2423 2424 ipr_free_ucode_buffer(sglist); 2425 release_firmware(fw_entry); 2426 2427 return count; 2428 } 2429 2430 static struct class_device_attribute ipr_update_fw_attr = { 2431 .attr = { 2432 .name = "update_fw", 2433 .mode = S_IWUSR, 2434 }, 2435 .store = ipr_store_update_fw 2436 }; 2437 2438 static struct class_device_attribute *ipr_ioa_attrs[] = { 2439 &ipr_fw_version_attr, 2440 &ipr_log_level_attr, 2441 &ipr_diagnostics_attr, 2442 &ipr_ioa_reset_attr, 2443 &ipr_update_fw_attr, 2444 NULL, 2445 }; 2446 2447 #ifdef CONFIG_SCSI_IPR_DUMP 2448 /** 2449 * ipr_read_dump - Dump the adapter 2450 * @kobj: kobject struct 2451 * @buf: buffer 2452 * @off: offset 2453 * @count: buffer size 2454 * 2455 * Return value: 2456 * number of bytes printed to buffer 2457 **/ 2458 static ssize_t ipr_read_dump(struct kobject *kobj, char *buf, 2459 loff_t off, size_t count) 2460 { 2461 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 2462 struct Scsi_Host *shost = class_to_shost(cdev); 2463 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2464 struct ipr_dump *dump; 2465 unsigned long lock_flags = 0; 2466 char *src; 2467 int len; 2468 size_t rc = count; 2469 2470 if (!capable(CAP_SYS_ADMIN)) 2471 return -EACCES; 2472 2473 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2474 dump = ioa_cfg->dump; 2475 2476 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 2477 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2478 return 0; 2479 } 2480 kref_get(&dump->kref); 2481 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2482 2483 if (off > dump->driver_dump.hdr.len) { 2484 kref_put(&dump->kref, ipr_release_dump); 2485 return 0; 2486 } 2487 2488 if (off + count > dump->driver_dump.hdr.len) { 2489 count = dump->driver_dump.hdr.len - off; 2490 rc = count; 2491 } 2492 2493 if (count && off < sizeof(dump->driver_dump)) { 2494 if (off + count > sizeof(dump->driver_dump)) 2495 len = sizeof(dump->driver_dump) - off; 2496 else 2497 len = count; 2498 src = (u8 *)&dump->driver_dump + off; 2499 memcpy(buf, src, len); 2500 buf += len; 2501 off += len; 2502 count -= len; 2503 } 2504 2505 off -= sizeof(dump->driver_dump); 2506 2507 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) { 2508 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data)) 2509 len = offsetof(struct ipr_ioa_dump, ioa_data) - off; 2510 else 2511 len = count; 2512 src = (u8 *)&dump->ioa_dump + off; 2513 memcpy(buf, src, len); 2514 buf += len; 2515 off += len; 2516 count -= len; 2517 } 2518 2519 off -= offsetof(struct ipr_ioa_dump, ioa_data); 2520 2521 while (count) { 2522 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 2523 len = PAGE_ALIGN(off) - off; 2524 else 2525 len = count; 2526 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 2527 src += off & ~PAGE_MASK; 2528 memcpy(buf, src, len); 2529 buf += len; 2530 off += len; 2531 count -= len; 2532 } 2533 2534 kref_put(&dump->kref, ipr_release_dump); 2535 return rc; 2536 } 2537 2538 /** 2539 * ipr_alloc_dump - Prepare for adapter dump 2540 * @ioa_cfg: ioa config struct 2541 * 2542 * Return value: 2543 * 0 on success / other on failure 2544 **/ 2545 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 2546 { 2547 struct ipr_dump *dump; 2548 unsigned long lock_flags = 0; 2549 2550 ENTER; 2551 dump = kmalloc(sizeof(struct ipr_dump), GFP_KERNEL); 2552 2553 if (!dump) { 2554 ipr_err("Dump memory allocation failed\n"); 2555 return -ENOMEM; 2556 } 2557 2558 memset(dump, 0, sizeof(struct ipr_dump)); 2559 kref_init(&dump->kref); 2560 dump->ioa_cfg = ioa_cfg; 2561 2562 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2563 2564 if (INACTIVE != ioa_cfg->sdt_state) { 2565 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2566 kfree(dump); 2567 return 0; 2568 } 2569 2570 ioa_cfg->dump = dump; 2571 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 2572 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) { 2573 ioa_cfg->dump_taken = 1; 2574 schedule_work(&ioa_cfg->work_q); 2575 } 2576 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2577 2578 LEAVE; 2579 return 0; 2580 } 2581 2582 /** 2583 * ipr_free_dump - Free adapter dump memory 2584 * @ioa_cfg: ioa config struct 2585 * 2586 * Return value: 2587 * 0 on success / other on failure 2588 **/ 2589 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 2590 { 2591 struct ipr_dump *dump; 2592 unsigned long lock_flags = 0; 2593 2594 ENTER; 2595 2596 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2597 dump = ioa_cfg->dump; 2598 if (!dump) { 2599 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2600 return 0; 2601 } 2602 2603 ioa_cfg->dump = NULL; 2604 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2605 2606 kref_put(&dump->kref, ipr_release_dump); 2607 2608 LEAVE; 2609 return 0; 2610 } 2611 2612 /** 2613 * ipr_write_dump - Setup dump state of adapter 2614 * @kobj: kobject struct 2615 * @buf: buffer 2616 * @off: offset 2617 * @count: buffer size 2618 * 2619 * Return value: 2620 * number of bytes printed to buffer 2621 **/ 2622 static ssize_t ipr_write_dump(struct kobject *kobj, char *buf, 2623 loff_t off, size_t count) 2624 { 2625 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 2626 struct Scsi_Host *shost = class_to_shost(cdev); 2627 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2628 int rc; 2629 2630 if (!capable(CAP_SYS_ADMIN)) 2631 return -EACCES; 2632 2633 if (buf[0] == '1') 2634 rc = ipr_alloc_dump(ioa_cfg); 2635 else if (buf[0] == '0') 2636 rc = ipr_free_dump(ioa_cfg); 2637 else 2638 return -EINVAL; 2639 2640 if (rc) 2641 return rc; 2642 else 2643 return count; 2644 } 2645 2646 static struct bin_attribute ipr_dump_attr = { 2647 .attr = { 2648 .name = "dump", 2649 .mode = S_IRUSR | S_IWUSR, 2650 }, 2651 .size = 0, 2652 .read = ipr_read_dump, 2653 .write = ipr_write_dump 2654 }; 2655 #else 2656 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 2657 #endif 2658 2659 /** 2660 * ipr_change_queue_depth - Change the device's queue depth 2661 * @sdev: scsi device struct 2662 * @qdepth: depth to set 2663 * 2664 * Return value: 2665 * actual depth set 2666 **/ 2667 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) 2668 { 2669 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); 2670 return sdev->queue_depth; 2671 } 2672 2673 /** 2674 * ipr_change_queue_type - Change the device's queue type 2675 * @dsev: scsi device struct 2676 * @tag_type: type of tags to use 2677 * 2678 * Return value: 2679 * actual queue type set 2680 **/ 2681 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type) 2682 { 2683 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 2684 struct ipr_resource_entry *res; 2685 unsigned long lock_flags = 0; 2686 2687 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2688 res = (struct ipr_resource_entry *)sdev->hostdata; 2689 2690 if (res) { 2691 if (ipr_is_gscsi(res) && sdev->tagged_supported) { 2692 /* 2693 * We don't bother quiescing the device here since the 2694 * adapter firmware does it for us. 2695 */ 2696 scsi_set_tag_type(sdev, tag_type); 2697 2698 if (tag_type) 2699 scsi_activate_tcq(sdev, sdev->queue_depth); 2700 else 2701 scsi_deactivate_tcq(sdev, sdev->queue_depth); 2702 } else 2703 tag_type = 0; 2704 } else 2705 tag_type = 0; 2706 2707 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2708 return tag_type; 2709 } 2710 2711 /** 2712 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 2713 * @dev: device struct 2714 * @buf: buffer 2715 * 2716 * Return value: 2717 * number of bytes printed to buffer 2718 **/ 2719 static ssize_t ipr_show_adapter_handle(struct device *dev, char *buf) 2720 { 2721 struct scsi_device *sdev = to_scsi_device(dev); 2722 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 2723 struct ipr_resource_entry *res; 2724 unsigned long lock_flags = 0; 2725 ssize_t len = -ENXIO; 2726 2727 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2728 res = (struct ipr_resource_entry *)sdev->hostdata; 2729 if (res) 2730 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle); 2731 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2732 return len; 2733 } 2734 2735 static struct device_attribute ipr_adapter_handle_attr = { 2736 .attr = { 2737 .name = "adapter_handle", 2738 .mode = S_IRUSR, 2739 }, 2740 .show = ipr_show_adapter_handle 2741 }; 2742 2743 static struct device_attribute *ipr_dev_attrs[] = { 2744 &ipr_adapter_handle_attr, 2745 NULL, 2746 }; 2747 2748 /** 2749 * ipr_biosparam - Return the HSC mapping 2750 * @sdev: scsi device struct 2751 * @block_device: block device pointer 2752 * @capacity: capacity of the device 2753 * @parm: Array containing returned HSC values. 2754 * 2755 * This function generates the HSC parms that fdisk uses. 2756 * We want to make sure we return something that places partitions 2757 * on 4k boundaries for best performance with the IOA. 2758 * 2759 * Return value: 2760 * 0 on success 2761 **/ 2762 static int ipr_biosparam(struct scsi_device *sdev, 2763 struct block_device *block_device, 2764 sector_t capacity, int *parm) 2765 { 2766 int heads, sectors; 2767 sector_t cylinders; 2768 2769 heads = 128; 2770 sectors = 32; 2771 2772 cylinders = capacity; 2773 sector_div(cylinders, (128 * 32)); 2774 2775 /* return result */ 2776 parm[0] = heads; 2777 parm[1] = sectors; 2778 parm[2] = cylinders; 2779 2780 return 0; 2781 } 2782 2783 /** 2784 * ipr_slave_destroy - Unconfigure a SCSI device 2785 * @sdev: scsi device struct 2786 * 2787 * Return value: 2788 * nothing 2789 **/ 2790 static void ipr_slave_destroy(struct scsi_device *sdev) 2791 { 2792 struct ipr_resource_entry *res; 2793 struct ipr_ioa_cfg *ioa_cfg; 2794 unsigned long lock_flags = 0; 2795 2796 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 2797 2798 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2799 res = (struct ipr_resource_entry *) sdev->hostdata; 2800 if (res) { 2801 sdev->hostdata = NULL; 2802 res->sdev = NULL; 2803 } 2804 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2805 } 2806 2807 /** 2808 * ipr_slave_configure - Configure a SCSI device 2809 * @sdev: scsi device struct 2810 * 2811 * This function configures the specified scsi device. 2812 * 2813 * Return value: 2814 * 0 on success 2815 **/ 2816 static int ipr_slave_configure(struct scsi_device *sdev) 2817 { 2818 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 2819 struct ipr_resource_entry *res; 2820 unsigned long lock_flags = 0; 2821 2822 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2823 res = sdev->hostdata; 2824 if (res) { 2825 if (ipr_is_af_dasd_device(res)) 2826 sdev->type = TYPE_RAID; 2827 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) 2828 sdev->scsi_level = 4; 2829 if (ipr_is_vset_device(res)) { 2830 sdev->timeout = IPR_VSET_RW_TIMEOUT; 2831 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); 2832 } 2833 if (IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data)) 2834 sdev->allow_restart = 1; 2835 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); 2836 } 2837 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2838 return 0; 2839 } 2840 2841 /** 2842 * ipr_slave_alloc - Prepare for commands to a device. 2843 * @sdev: scsi device struct 2844 * 2845 * This function saves a pointer to the resource entry 2846 * in the scsi device struct if the device exists. We 2847 * can then use this pointer in ipr_queuecommand when 2848 * handling new commands. 2849 * 2850 * Return value: 2851 * 0 on success 2852 **/ 2853 static int ipr_slave_alloc(struct scsi_device *sdev) 2854 { 2855 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 2856 struct ipr_resource_entry *res; 2857 unsigned long lock_flags; 2858 2859 sdev->hostdata = NULL; 2860 2861 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2862 2863 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2864 if ((res->cfgte.res_addr.bus == sdev->channel) && 2865 (res->cfgte.res_addr.target == sdev->id) && 2866 (res->cfgte.res_addr.lun == sdev->lun)) { 2867 res->sdev = sdev; 2868 res->add_to_ml = 0; 2869 res->in_erp = 0; 2870 sdev->hostdata = res; 2871 res->needs_sync_complete = 1; 2872 break; 2873 } 2874 } 2875 2876 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2877 2878 return 0; 2879 } 2880 2881 /** 2882 * ipr_eh_host_reset - Reset the host adapter 2883 * @scsi_cmd: scsi command struct 2884 * 2885 * Return value: 2886 * SUCCESS / FAILED 2887 **/ 2888 static int ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd) 2889 { 2890 struct ipr_ioa_cfg *ioa_cfg; 2891 int rc; 2892 2893 ENTER; 2894 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 2895 2896 dev_err(&ioa_cfg->pdev->dev, 2897 "Adapter being reset as a result of error recovery.\n"); 2898 2899 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 2900 ioa_cfg->sdt_state = GET_DUMP; 2901 2902 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV); 2903 2904 LEAVE; 2905 return rc; 2906 } 2907 2908 /** 2909 * ipr_eh_dev_reset - Reset the device 2910 * @scsi_cmd: scsi command struct 2911 * 2912 * This function issues a device reset to the affected device. 2913 * A LUN reset will be sent to the device first. If that does 2914 * not work, a target reset will be sent. 2915 * 2916 * Return value: 2917 * SUCCESS / FAILED 2918 **/ 2919 static int ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) 2920 { 2921 struct ipr_cmnd *ipr_cmd; 2922 struct ipr_ioa_cfg *ioa_cfg; 2923 struct ipr_resource_entry *res; 2924 struct ipr_cmd_pkt *cmd_pkt; 2925 u32 ioasc; 2926 2927 ENTER; 2928 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 2929 res = scsi_cmd->device->hostdata; 2930 2931 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res))) 2932 return FAILED; 2933 2934 /* 2935 * If we are currently going through reset/reload, return failed. This will force the 2936 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 2937 * reset to complete 2938 */ 2939 if (ioa_cfg->in_reset_reload) 2940 return FAILED; 2941 if (ioa_cfg->ioa_is_dead) 2942 return FAILED; 2943 2944 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 2945 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) { 2946 if (ipr_cmd->scsi_cmd) 2947 ipr_cmd->done = ipr_scsi_eh_done; 2948 } 2949 } 2950 2951 res->resetting_device = 1; 2952 2953 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 2954 2955 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 2956 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 2957 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 2958 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 2959 2960 ipr_sdev_err(scsi_cmd->device, "Resetting device\n"); 2961 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 2962 2963 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 2964 2965 res->resetting_device = 0; 2966 2967 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 2968 2969 LEAVE; 2970 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); 2971 } 2972 2973 /** 2974 * ipr_bus_reset_done - Op done function for bus reset. 2975 * @ipr_cmd: ipr command struct 2976 * 2977 * This function is the op done function for a bus reset 2978 * 2979 * Return value: 2980 * none 2981 **/ 2982 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 2983 { 2984 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2985 struct ipr_resource_entry *res; 2986 2987 ENTER; 2988 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2989 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle, 2990 sizeof(res->cfgte.res_handle))) { 2991 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus); 2992 break; 2993 } 2994 } 2995 2996 /* 2997 * If abort has not completed, indicate the reset has, else call the 2998 * abort's done function to wake the sleeping eh thread 2999 */ 3000 if (ipr_cmd->sibling->sibling) 3001 ipr_cmd->sibling->sibling = NULL; 3002 else 3003 ipr_cmd->sibling->done(ipr_cmd->sibling); 3004 3005 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3006 LEAVE; 3007 } 3008 3009 /** 3010 * ipr_abort_timeout - An abort task has timed out 3011 * @ipr_cmd: ipr command struct 3012 * 3013 * This function handles when an abort task times out. If this 3014 * happens we issue a bus reset since we have resources tied 3015 * up that must be freed before returning to the midlayer. 3016 * 3017 * Return value: 3018 * none 3019 **/ 3020 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 3021 { 3022 struct ipr_cmnd *reset_cmd; 3023 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3024 struct ipr_cmd_pkt *cmd_pkt; 3025 unsigned long lock_flags = 0; 3026 3027 ENTER; 3028 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3029 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 3030 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3031 return; 3032 } 3033 3034 ipr_sdev_err(ipr_cmd->u.sdev, "Abort timed out. Resetting bus\n"); 3035 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3036 ipr_cmd->sibling = reset_cmd; 3037 reset_cmd->sibling = ipr_cmd; 3038 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 3039 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 3040 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3041 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 3042 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 3043 3044 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 3045 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3046 LEAVE; 3047 } 3048 3049 /** 3050 * ipr_cancel_op - Cancel specified op 3051 * @scsi_cmd: scsi command struct 3052 * 3053 * This function cancels specified op. 3054 * 3055 * Return value: 3056 * SUCCESS / FAILED 3057 **/ 3058 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) 3059 { 3060 struct ipr_cmnd *ipr_cmd; 3061 struct ipr_ioa_cfg *ioa_cfg; 3062 struct ipr_resource_entry *res; 3063 struct ipr_cmd_pkt *cmd_pkt; 3064 u32 ioasc; 3065 int op_found = 0; 3066 3067 ENTER; 3068 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 3069 res = scsi_cmd->device->hostdata; 3070 3071 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res))) 3072 return FAILED; 3073 3074 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3075 if (ipr_cmd->scsi_cmd == scsi_cmd) { 3076 ipr_cmd->done = ipr_scsi_eh_done; 3077 op_found = 1; 3078 break; 3079 } 3080 } 3081 3082 if (!op_found) 3083 return SUCCESS; 3084 3085 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3086 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 3087 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 3088 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3089 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 3090 ipr_cmd->u.sdev = scsi_cmd->device; 3091 3092 ipr_sdev_err(scsi_cmd->device, "Aborting command: %02X\n", scsi_cmd->cmnd[0]); 3093 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 3094 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3095 3096 /* 3097 * If the abort task timed out and we sent a bus reset, we will get 3098 * one the following responses to the abort 3099 */ 3100 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 3101 ioasc = 0; 3102 ipr_trace; 3103 } 3104 3105 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3106 res->needs_sync_complete = 1; 3107 3108 LEAVE; 3109 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); 3110 } 3111 3112 /** 3113 * ipr_eh_abort - Abort a single op 3114 * @scsi_cmd: scsi command struct 3115 * 3116 * Return value: 3117 * SUCCESS / FAILED 3118 **/ 3119 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) 3120 { 3121 struct ipr_ioa_cfg *ioa_cfg; 3122 3123 ENTER; 3124 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 3125 3126 /* If we are currently going through reset/reload, return failed. This will force the 3127 mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 3128 reset to complete */ 3129 if (ioa_cfg->in_reset_reload) 3130 return FAILED; 3131 if (ioa_cfg->ioa_is_dead) 3132 return FAILED; 3133 if (!scsi_cmd->device->hostdata) 3134 return FAILED; 3135 3136 LEAVE; 3137 return ipr_cancel_op(scsi_cmd); 3138 } 3139 3140 /** 3141 * ipr_handle_other_interrupt - Handle "other" interrupts 3142 * @ioa_cfg: ioa config struct 3143 * @int_reg: interrupt register 3144 * 3145 * Return value: 3146 * IRQ_NONE / IRQ_HANDLED 3147 **/ 3148 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 3149 volatile u32 int_reg) 3150 { 3151 irqreturn_t rc = IRQ_HANDLED; 3152 3153 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 3154 /* Mask the interrupt */ 3155 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 3156 3157 /* Clear the interrupt */ 3158 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); 3159 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 3160 3161 list_del(&ioa_cfg->reset_cmd->queue); 3162 del_timer(&ioa_cfg->reset_cmd->timer); 3163 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 3164 } else { 3165 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 3166 ioa_cfg->ioa_unit_checked = 1; 3167 else 3168 dev_err(&ioa_cfg->pdev->dev, 3169 "Permanent IOA failure. 0x%08X\n", int_reg); 3170 3171 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 3172 ioa_cfg->sdt_state = GET_DUMP; 3173 3174 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 3175 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3176 } 3177 3178 return rc; 3179 } 3180 3181 /** 3182 * ipr_isr - Interrupt service routine 3183 * @irq: irq number 3184 * @devp: pointer to ioa config struct 3185 * @regs: pt_regs struct 3186 * 3187 * Return value: 3188 * IRQ_NONE / IRQ_HANDLED 3189 **/ 3190 static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs) 3191 { 3192 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 3193 unsigned long lock_flags = 0; 3194 volatile u32 int_reg, int_mask_reg; 3195 u32 ioasc; 3196 u16 cmd_index; 3197 struct ipr_cmnd *ipr_cmd; 3198 irqreturn_t rc = IRQ_NONE; 3199 3200 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3201 3202 /* If interrupts are disabled, ignore the interrupt */ 3203 if (!ioa_cfg->allow_interrupts) { 3204 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3205 return IRQ_NONE; 3206 } 3207 3208 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 3209 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 3210 3211 /* If an interrupt on the adapter did not occur, ignore it */ 3212 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) { 3213 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3214 return IRQ_NONE; 3215 } 3216 3217 while (1) { 3218 ipr_cmd = NULL; 3219 3220 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 3221 ioa_cfg->toggle_bit) { 3222 3223 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & 3224 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 3225 3226 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { 3227 ioa_cfg->errors_logged++; 3228 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n"); 3229 3230 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 3231 ioa_cfg->sdt_state = GET_DUMP; 3232 3233 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3234 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3235 return IRQ_HANDLED; 3236 } 3237 3238 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 3239 3240 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3241 3242 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 3243 3244 list_del(&ipr_cmd->queue); 3245 del_timer(&ipr_cmd->timer); 3246 ipr_cmd->done(ipr_cmd); 3247 3248 rc = IRQ_HANDLED; 3249 3250 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { 3251 ioa_cfg->hrrq_curr++; 3252 } else { 3253 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 3254 ioa_cfg->toggle_bit ^= 1u; 3255 } 3256 } 3257 3258 if (ipr_cmd != NULL) { 3259 /* Clear the PCI interrupt */ 3260 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg); 3261 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 3262 } else 3263 break; 3264 } 3265 3266 if (unlikely(rc == IRQ_NONE)) 3267 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 3268 3269 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3270 return rc; 3271 } 3272 3273 /** 3274 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 3275 * @ioa_cfg: ioa config struct 3276 * @ipr_cmd: ipr command struct 3277 * 3278 * Return value: 3279 * 0 on success / -1 on failure 3280 **/ 3281 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 3282 struct ipr_cmnd *ipr_cmd) 3283 { 3284 int i; 3285 struct scatterlist *sglist; 3286 u32 length; 3287 u32 ioadl_flags = 0; 3288 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3289 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3290 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 3291 3292 length = scsi_cmd->request_bufflen; 3293 3294 if (length == 0) 3295 return 0; 3296 3297 if (scsi_cmd->use_sg) { 3298 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, 3299 scsi_cmd->request_buffer, 3300 scsi_cmd->use_sg, 3301 scsi_cmd->sc_data_direction); 3302 3303 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 3304 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 3305 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3306 ioarcb->write_data_transfer_length = cpu_to_be32(length); 3307 ioarcb->write_ioadl_len = 3308 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 3309 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 3310 ioadl_flags = IPR_IOADL_FLAGS_READ; 3311 ioarcb->read_data_transfer_length = cpu_to_be32(length); 3312 ioarcb->read_ioadl_len = 3313 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 3314 } 3315 3316 sglist = scsi_cmd->request_buffer; 3317 3318 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3319 ioadl[i].flags_and_data_len = 3320 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i])); 3321 ioadl[i].address = 3322 cpu_to_be32(sg_dma_address(&sglist[i])); 3323 } 3324 3325 if (likely(ipr_cmd->dma_use_sg)) { 3326 ioadl[i-1].flags_and_data_len |= 3327 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3328 return 0; 3329 } else 3330 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 3331 } else { 3332 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 3333 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 3334 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3335 ioarcb->write_data_transfer_length = cpu_to_be32(length); 3336 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 3337 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 3338 ioadl_flags = IPR_IOADL_FLAGS_READ; 3339 ioarcb->read_data_transfer_length = cpu_to_be32(length); 3340 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 3341 } 3342 3343 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev, 3344 scsi_cmd->request_buffer, length, 3345 scsi_cmd->sc_data_direction); 3346 3347 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) { 3348 ipr_cmd->dma_use_sg = 1; 3349 ioadl[0].flags_and_data_len = 3350 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST); 3351 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle); 3352 return 0; 3353 } else 3354 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n"); 3355 } 3356 3357 return -1; 3358 } 3359 3360 /** 3361 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes 3362 * @scsi_cmd: scsi command struct 3363 * 3364 * Return value: 3365 * task attributes 3366 **/ 3367 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) 3368 { 3369 u8 tag[2]; 3370 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; 3371 3372 if (scsi_populate_tag_msg(scsi_cmd, tag)) { 3373 switch (tag[0]) { 3374 case MSG_SIMPLE_TAG: 3375 rc = IPR_FLAGS_LO_SIMPLE_TASK; 3376 break; 3377 case MSG_HEAD_TAG: 3378 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; 3379 break; 3380 case MSG_ORDERED_TAG: 3381 rc = IPR_FLAGS_LO_ORDERED_TASK; 3382 break; 3383 }; 3384 } 3385 3386 return rc; 3387 } 3388 3389 /** 3390 * ipr_erp_done - Process completion of ERP for a device 3391 * @ipr_cmd: ipr command struct 3392 * 3393 * This function copies the sense buffer into the scsi_cmd 3394 * struct and pushes the scsi_done function. 3395 * 3396 * Return value: 3397 * nothing 3398 **/ 3399 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 3400 { 3401 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3402 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 3403 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3404 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3405 3406 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 3407 scsi_cmd->result |= (DID_ERROR << 16); 3408 ipr_sdev_err(scsi_cmd->device, 3409 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 3410 } else { 3411 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 3412 SCSI_SENSE_BUFFERSIZE); 3413 } 3414 3415 if (res) { 3416 res->needs_sync_complete = 1; 3417 res->in_erp = 0; 3418 } 3419 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 3420 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3421 scsi_cmd->scsi_done(scsi_cmd); 3422 } 3423 3424 /** 3425 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 3426 * @ipr_cmd: ipr command struct 3427 * 3428 * Return value: 3429 * none 3430 **/ 3431 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 3432 { 3433 struct ipr_ioarcb *ioarcb; 3434 struct ipr_ioasa *ioasa; 3435 3436 ioarcb = &ipr_cmd->ioarcb; 3437 ioasa = &ipr_cmd->ioasa; 3438 3439 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 3440 ioarcb->write_data_transfer_length = 0; 3441 ioarcb->read_data_transfer_length = 0; 3442 ioarcb->write_ioadl_len = 0; 3443 ioarcb->read_ioadl_len = 0; 3444 ioasa->ioasc = 0; 3445 ioasa->residual_data_len = 0; 3446 } 3447 3448 /** 3449 * ipr_erp_request_sense - Send request sense to a device 3450 * @ipr_cmd: ipr command struct 3451 * 3452 * This function sends a request sense to a device as a result 3453 * of a check condition. 3454 * 3455 * Return value: 3456 * nothing 3457 **/ 3458 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 3459 { 3460 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 3461 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3462 3463 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 3464 ipr_erp_done(ipr_cmd); 3465 return; 3466 } 3467 3468 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 3469 3470 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 3471 cmd_pkt->cdb[0] = REQUEST_SENSE; 3472 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 3473 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 3474 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 3475 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 3476 3477 ipr_cmd->ioadl[0].flags_and_data_len = 3478 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE); 3479 ipr_cmd->ioadl[0].address = 3480 cpu_to_be32(ipr_cmd->sense_buffer_dma); 3481 3482 ipr_cmd->ioarcb.read_ioadl_len = 3483 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 3484 ipr_cmd->ioarcb.read_data_transfer_length = 3485 cpu_to_be32(SCSI_SENSE_BUFFERSIZE); 3486 3487 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 3488 IPR_REQUEST_SENSE_TIMEOUT * 2); 3489 } 3490 3491 /** 3492 * ipr_erp_cancel_all - Send cancel all to a device 3493 * @ipr_cmd: ipr command struct 3494 * 3495 * This function sends a cancel all to a device to clear the 3496 * queue. If we are running TCQ on the device, QERR is set to 1, 3497 * which means all outstanding ops have been dropped on the floor. 3498 * Cancel all will return them to us. 3499 * 3500 * Return value: 3501 * nothing 3502 **/ 3503 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 3504 { 3505 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3506 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 3507 struct ipr_cmd_pkt *cmd_pkt; 3508 3509 res->in_erp = 1; 3510 3511 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 3512 3513 if (!scsi_get_tag_type(scsi_cmd->device)) { 3514 ipr_erp_request_sense(ipr_cmd); 3515 return; 3516 } 3517 3518 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 3519 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3520 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 3521 3522 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 3523 IPR_CANCEL_ALL_TIMEOUT); 3524 } 3525 3526 /** 3527 * ipr_dump_ioasa - Dump contents of IOASA 3528 * @ioa_cfg: ioa config struct 3529 * @ipr_cmd: ipr command struct 3530 * 3531 * This function is invoked by the interrupt handler when ops 3532 * fail. It will log the IOASA if appropriate. Only called 3533 * for GPDD ops. 3534 * 3535 * Return value: 3536 * none 3537 **/ 3538 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 3539 struct ipr_cmnd *ipr_cmd) 3540 { 3541 int i; 3542 u16 data_len; 3543 u32 ioasc; 3544 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 3545 __be32 *ioasa_data = (__be32 *)ioasa; 3546 int error_index; 3547 3548 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK; 3549 3550 if (0 == ioasc) 3551 return; 3552 3553 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 3554 return; 3555 3556 error_index = ipr_get_error(ioasc); 3557 3558 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 3559 /* Don't log an error if the IOA already logged one */ 3560 if (ioasa->ilid != 0) 3561 return; 3562 3563 if (ipr_error_table[error_index].log_ioasa == 0) 3564 return; 3565 } 3566 3567 ipr_sdev_err(ipr_cmd->scsi_cmd->device, "%s\n", 3568 ipr_error_table[error_index].error); 3569 3570 if ((ioasa->u.gpdd.end_state <= ARRAY_SIZE(ipr_gpdd_dev_end_states)) && 3571 (ioasa->u.gpdd.bus_phase <= ARRAY_SIZE(ipr_gpdd_dev_bus_phases))) { 3572 ipr_sdev_err(ipr_cmd->scsi_cmd->device, 3573 "Device End state: %s Phase: %s\n", 3574 ipr_gpdd_dev_end_states[ioasa->u.gpdd.end_state], 3575 ipr_gpdd_dev_bus_phases[ioasa->u.gpdd.bus_phase]); 3576 } 3577 3578 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len)) 3579 data_len = sizeof(struct ipr_ioasa); 3580 else 3581 data_len = be16_to_cpu(ioasa->ret_stat_len); 3582 3583 ipr_err("IOASA Dump:\n"); 3584 3585 for (i = 0; i < data_len / 4; i += 4) { 3586 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 3587 be32_to_cpu(ioasa_data[i]), 3588 be32_to_cpu(ioasa_data[i+1]), 3589 be32_to_cpu(ioasa_data[i+2]), 3590 be32_to_cpu(ioasa_data[i+3])); 3591 } 3592 } 3593 3594 /** 3595 * ipr_gen_sense - Generate SCSI sense data from an IOASA 3596 * @ioasa: IOASA 3597 * @sense_buf: sense data buffer 3598 * 3599 * Return value: 3600 * none 3601 **/ 3602 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 3603 { 3604 u32 failing_lba; 3605 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 3606 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 3607 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 3608 u32 ioasc = be32_to_cpu(ioasa->ioasc); 3609 3610 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 3611 3612 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 3613 return; 3614 3615 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 3616 3617 if (ipr_is_vset_device(res) && 3618 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 3619 ioasa->u.vset.failing_lba_hi != 0) { 3620 sense_buf[0] = 0x72; 3621 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 3622 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 3623 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 3624 3625 sense_buf[7] = 12; 3626 sense_buf[8] = 0; 3627 sense_buf[9] = 0x0A; 3628 sense_buf[10] = 0x80; 3629 3630 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 3631 3632 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 3633 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 3634 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 3635 sense_buf[15] = failing_lba & 0x000000ff; 3636 3637 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 3638 3639 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 3640 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 3641 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 3642 sense_buf[19] = failing_lba & 0x000000ff; 3643 } else { 3644 sense_buf[0] = 0x70; 3645 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 3646 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 3647 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 3648 3649 /* Illegal request */ 3650 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 3651 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 3652 sense_buf[7] = 10; /* additional length */ 3653 3654 /* IOARCB was in error */ 3655 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 3656 sense_buf[15] = 0xC0; 3657 else /* Parameter data was invalid */ 3658 sense_buf[15] = 0x80; 3659 3660 sense_buf[16] = 3661 ((IPR_FIELD_POINTER_MASK & 3662 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff; 3663 sense_buf[17] = 3664 (IPR_FIELD_POINTER_MASK & 3665 be32_to_cpu(ioasa->ioasc_specific)) & 0xff; 3666 } else { 3667 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 3668 if (ipr_is_vset_device(res)) 3669 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 3670 else 3671 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 3672 3673 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 3674 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 3675 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 3676 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 3677 sense_buf[6] = failing_lba & 0x000000ff; 3678 } 3679 3680 sense_buf[7] = 6; /* additional length */ 3681 } 3682 } 3683 } 3684 3685 /** 3686 * ipr_erp_start - Process an error response for a SCSI op 3687 * @ioa_cfg: ioa config struct 3688 * @ipr_cmd: ipr command struct 3689 * 3690 * This function determines whether or not to initiate ERP 3691 * on the affected device. 3692 * 3693 * Return value: 3694 * nothing 3695 **/ 3696 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 3697 struct ipr_cmnd *ipr_cmd) 3698 { 3699 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3700 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 3701 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3702 3703 if (!res) { 3704 ipr_scsi_eh_done(ipr_cmd); 3705 return; 3706 } 3707 3708 if (ipr_is_gscsi(res)) 3709 ipr_dump_ioasa(ioa_cfg, ipr_cmd); 3710 else 3711 ipr_gen_sense(ipr_cmd); 3712 3713 switch (ioasc & IPR_IOASC_IOASC_MASK) { 3714 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 3715 scsi_cmd->result |= (DID_IMM_RETRY << 16); 3716 break; 3717 case IPR_IOASC_IR_RESOURCE_HANDLE: 3718 scsi_cmd->result |= (DID_NO_CONNECT << 16); 3719 break; 3720 case IPR_IOASC_HW_SEL_TIMEOUT: 3721 scsi_cmd->result |= (DID_NO_CONNECT << 16); 3722 res->needs_sync_complete = 1; 3723 break; 3724 case IPR_IOASC_SYNC_REQUIRED: 3725 if (!res->in_erp) 3726 res->needs_sync_complete = 1; 3727 scsi_cmd->result |= (DID_IMM_RETRY << 16); 3728 break; 3729 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 3730 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 3731 break; 3732 case IPR_IOASC_BUS_WAS_RESET: 3733 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 3734 /* 3735 * Report the bus reset and ask for a retry. The device 3736 * will give CC/UA the next command. 3737 */ 3738 if (!res->resetting_device) 3739 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 3740 scsi_cmd->result |= (DID_ERROR << 16); 3741 res->needs_sync_complete = 1; 3742 break; 3743 case IPR_IOASC_HW_DEV_BUS_STATUS: 3744 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 3745 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 3746 ipr_erp_cancel_all(ipr_cmd); 3747 return; 3748 } 3749 res->needs_sync_complete = 1; 3750 break; 3751 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 3752 break; 3753 default: 3754 scsi_cmd->result |= (DID_ERROR << 16); 3755 if (!ipr_is_vset_device(res)) 3756 res->needs_sync_complete = 1; 3757 break; 3758 } 3759 3760 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 3761 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3762 scsi_cmd->scsi_done(scsi_cmd); 3763 } 3764 3765 /** 3766 * ipr_scsi_done - mid-layer done function 3767 * @ipr_cmd: ipr command struct 3768 * 3769 * This function is invoked by the interrupt handler for 3770 * ops generated by the SCSI mid-layer 3771 * 3772 * Return value: 3773 * none 3774 **/ 3775 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 3776 { 3777 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3778 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3779 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3780 3781 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len); 3782 3783 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 3784 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 3785 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3786 scsi_cmd->scsi_done(scsi_cmd); 3787 } else 3788 ipr_erp_start(ioa_cfg, ipr_cmd); 3789 } 3790 3791 /** 3792 * ipr_save_ioafp_mode_select - Save adapters mode select data 3793 * @ioa_cfg: ioa config struct 3794 * @scsi_cmd: scsi command struct 3795 * 3796 * This function saves mode select data for the adapter to 3797 * use following an adapter reset. 3798 * 3799 * Return value: 3800 * 0 on success / SCSI_MLQUEUE_HOST_BUSY on failure 3801 **/ 3802 static int ipr_save_ioafp_mode_select(struct ipr_ioa_cfg *ioa_cfg, 3803 struct scsi_cmnd *scsi_cmd) 3804 { 3805 if (!ioa_cfg->saved_mode_pages) { 3806 ioa_cfg->saved_mode_pages = kmalloc(sizeof(struct ipr_mode_pages), 3807 GFP_ATOMIC); 3808 if (!ioa_cfg->saved_mode_pages) { 3809 dev_err(&ioa_cfg->pdev->dev, 3810 "IOA mode select buffer allocation failed\n"); 3811 return SCSI_MLQUEUE_HOST_BUSY; 3812 } 3813 } 3814 3815 memcpy(ioa_cfg->saved_mode_pages, scsi_cmd->buffer, scsi_cmd->cmnd[4]); 3816 ioa_cfg->saved_mode_page_len = scsi_cmd->cmnd[4]; 3817 return 0; 3818 } 3819 3820 /** 3821 * ipr_queuecommand - Queue a mid-layer request 3822 * @scsi_cmd: scsi command struct 3823 * @done: done function 3824 * 3825 * This function queues a request generated by the mid-layer. 3826 * 3827 * Return value: 3828 * 0 on success 3829 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 3830 * SCSI_MLQUEUE_HOST_BUSY if host is busy 3831 **/ 3832 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, 3833 void (*done) (struct scsi_cmnd *)) 3834 { 3835 struct ipr_ioa_cfg *ioa_cfg; 3836 struct ipr_resource_entry *res; 3837 struct ipr_ioarcb *ioarcb; 3838 struct ipr_cmnd *ipr_cmd; 3839 int rc = 0; 3840 3841 scsi_cmd->scsi_done = done; 3842 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 3843 res = scsi_cmd->device->hostdata; 3844 scsi_cmd->result = (DID_OK << 16); 3845 3846 /* 3847 * We are currently blocking all devices due to a host reset 3848 * We have told the host to stop giving us new requests, but 3849 * ERP ops don't count. FIXME 3850 */ 3851 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) 3852 return SCSI_MLQUEUE_HOST_BUSY; 3853 3854 /* 3855 * FIXME - Create scsi_set_host_offline interface 3856 * and the ioa_is_dead check can be removed 3857 */ 3858 if (unlikely(ioa_cfg->ioa_is_dead || !res)) { 3859 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 3860 scsi_cmd->result = (DID_NO_CONNECT << 16); 3861 scsi_cmd->scsi_done(scsi_cmd); 3862 return 0; 3863 } 3864 3865 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3866 ioarcb = &ipr_cmd->ioarcb; 3867 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 3868 3869 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 3870 ipr_cmd->scsi_cmd = scsi_cmd; 3871 ioarcb->res_handle = res->cfgte.res_handle; 3872 ipr_cmd->done = ipr_scsi_done; 3873 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 3874 3875 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 3876 if (scsi_cmd->underflow == 0) 3877 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 3878 3879 if (res->needs_sync_complete) { 3880 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 3881 res->needs_sync_complete = 0; 3882 } 3883 3884 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 3885 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 3886 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 3887 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); 3888 } 3889 3890 if (scsi_cmd->cmnd[0] >= 0xC0 && 3891 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) 3892 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 3893 3894 if (ipr_is_ioa_resource(res) && scsi_cmd->cmnd[0] == MODE_SELECT) 3895 rc = ipr_save_ioafp_mode_select(ioa_cfg, scsi_cmd); 3896 3897 if (likely(rc == 0)) 3898 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 3899 3900 if (likely(rc == 0)) { 3901 mb(); 3902 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 3903 ioa_cfg->regs.ioarrin_reg); 3904 } else { 3905 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3906 return SCSI_MLQUEUE_HOST_BUSY; 3907 } 3908 3909 return 0; 3910 } 3911 3912 /** 3913 * ipr_info - Get information about the card/driver 3914 * @scsi_host: scsi host struct 3915 * 3916 * Return value: 3917 * pointer to buffer with description string 3918 **/ 3919 static const char * ipr_ioa_info(struct Scsi_Host *host) 3920 { 3921 static char buffer[512]; 3922 struct ipr_ioa_cfg *ioa_cfg; 3923 unsigned long lock_flags = 0; 3924 3925 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 3926 3927 spin_lock_irqsave(host->host_lock, lock_flags); 3928 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 3929 spin_unlock_irqrestore(host->host_lock, lock_flags); 3930 3931 return buffer; 3932 } 3933 3934 static struct scsi_host_template driver_template = { 3935 .module = THIS_MODULE, 3936 .name = "IPR", 3937 .info = ipr_ioa_info, 3938 .queuecommand = ipr_queuecommand, 3939 .eh_abort_handler = ipr_eh_abort, 3940 .eh_device_reset_handler = ipr_eh_dev_reset, 3941 .eh_host_reset_handler = ipr_eh_host_reset, 3942 .slave_alloc = ipr_slave_alloc, 3943 .slave_configure = ipr_slave_configure, 3944 .slave_destroy = ipr_slave_destroy, 3945 .change_queue_depth = ipr_change_queue_depth, 3946 .change_queue_type = ipr_change_queue_type, 3947 .bios_param = ipr_biosparam, 3948 .can_queue = IPR_MAX_COMMANDS, 3949 .this_id = -1, 3950 .sg_tablesize = IPR_MAX_SGLIST, 3951 .max_sectors = IPR_IOA_MAX_SECTORS, 3952 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 3953 .use_clustering = ENABLE_CLUSTERING, 3954 .shost_attrs = ipr_ioa_attrs, 3955 .sdev_attrs = ipr_dev_attrs, 3956 .proc_name = IPR_NAME 3957 }; 3958 3959 #ifdef CONFIG_PPC_PSERIES 3960 static const u16 ipr_blocked_processors[] = { 3961 PV_NORTHSTAR, 3962 PV_PULSAR, 3963 PV_POWER4, 3964 PV_ICESTAR, 3965 PV_SSTAR, 3966 PV_POWER4p, 3967 PV_630, 3968 PV_630p 3969 }; 3970 3971 /** 3972 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 3973 * @ioa_cfg: ioa cfg struct 3974 * 3975 * Adapters that use Gemstone revision < 3.1 do not work reliably on 3976 * certain pSeries hardware. This function determines if the given 3977 * adapter is in one of these confgurations or not. 3978 * 3979 * Return value: 3980 * 1 if adapter is not supported / 0 if adapter is supported 3981 **/ 3982 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 3983 { 3984 u8 rev_id; 3985 int i; 3986 3987 if (ioa_cfg->type == 0x5702) { 3988 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID, 3989 &rev_id) == PCIBIOS_SUCCESSFUL) { 3990 if (rev_id < 4) { 3991 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ 3992 if (__is_processor(ipr_blocked_processors[i])) 3993 return 1; 3994 } 3995 } 3996 } 3997 } 3998 return 0; 3999 } 4000 #else 4001 #define ipr_invalid_adapter(ioa_cfg) 0 4002 #endif 4003 4004 /** 4005 * ipr_ioa_bringdown_done - IOA bring down completion. 4006 * @ipr_cmd: ipr command struct 4007 * 4008 * This function processes the completion of an adapter bring down. 4009 * It wakes any reset sleepers. 4010 * 4011 * Return value: 4012 * IPR_RC_JOB_RETURN 4013 **/ 4014 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 4015 { 4016 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4017 4018 ENTER; 4019 ioa_cfg->in_reset_reload = 0; 4020 ioa_cfg->reset_retries = 0; 4021 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4022 wake_up_all(&ioa_cfg->reset_wait_q); 4023 4024 spin_unlock_irq(ioa_cfg->host->host_lock); 4025 scsi_unblock_requests(ioa_cfg->host); 4026 spin_lock_irq(ioa_cfg->host->host_lock); 4027 LEAVE; 4028 4029 return IPR_RC_JOB_RETURN; 4030 } 4031 4032 /** 4033 * ipr_ioa_reset_done - IOA reset completion. 4034 * @ipr_cmd: ipr command struct 4035 * 4036 * This function processes the completion of an adapter reset. 4037 * It schedules any necessary mid-layer add/removes and 4038 * wakes any reset sleepers. 4039 * 4040 * Return value: 4041 * IPR_RC_JOB_RETURN 4042 **/ 4043 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 4044 { 4045 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4046 struct ipr_resource_entry *res; 4047 struct ipr_hostrcb *hostrcb, *temp; 4048 int i = 0; 4049 4050 ENTER; 4051 ioa_cfg->in_reset_reload = 0; 4052 ioa_cfg->allow_cmds = 1; 4053 ioa_cfg->reset_cmd = NULL; 4054 4055 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4056 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { 4057 ipr_trace; 4058 break; 4059 } 4060 } 4061 schedule_work(&ioa_cfg->work_q); 4062 4063 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { 4064 list_del(&hostrcb->queue); 4065 if (i++ < IPR_NUM_LOG_HCAMS) 4066 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 4067 else 4068 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 4069 } 4070 4071 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 4072 4073 ioa_cfg->reset_retries = 0; 4074 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4075 wake_up_all(&ioa_cfg->reset_wait_q); 4076 4077 spin_unlock_irq(ioa_cfg->host->host_lock); 4078 scsi_unblock_requests(ioa_cfg->host); 4079 spin_lock_irq(ioa_cfg->host->host_lock); 4080 4081 if (!ioa_cfg->allow_cmds) 4082 scsi_block_requests(ioa_cfg->host); 4083 4084 LEAVE; 4085 return IPR_RC_JOB_RETURN; 4086 } 4087 4088 /** 4089 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 4090 * @supported_dev: supported device struct 4091 * @vpids: vendor product id struct 4092 * 4093 * Return value: 4094 * none 4095 **/ 4096 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 4097 struct ipr_std_inq_vpids *vpids) 4098 { 4099 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 4100 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 4101 supported_dev->num_records = 1; 4102 supported_dev->data_length = 4103 cpu_to_be16(sizeof(struct ipr_supported_device)); 4104 supported_dev->reserved = 0; 4105 } 4106 4107 /** 4108 * ipr_set_supported_devs - Send Set Supported Devices for a device 4109 * @ipr_cmd: ipr command struct 4110 * 4111 * This function send a Set Supported Devices to the adapter 4112 * 4113 * Return value: 4114 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 4115 **/ 4116 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 4117 { 4118 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4119 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 4120 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4121 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4122 struct ipr_resource_entry *res = ipr_cmd->u.res; 4123 4124 ipr_cmd->job_step = ipr_ioa_reset_done; 4125 4126 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 4127 if (!ipr_is_af_dasd_device(res)) 4128 continue; 4129 4130 ipr_cmd->u.res = res; 4131 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids); 4132 4133 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 4134 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4135 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4136 4137 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 4138 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 4139 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 4140 4141 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | 4142 sizeof(struct ipr_supported_device)); 4143 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma + 4144 offsetof(struct ipr_misc_cbs, supp_dev)); 4145 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4146 ioarcb->write_data_transfer_length = 4147 cpu_to_be32(sizeof(struct ipr_supported_device)); 4148 4149 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 4150 IPR_SET_SUP_DEVICE_TIMEOUT); 4151 4152 ipr_cmd->job_step = ipr_set_supported_devs; 4153 return IPR_RC_JOB_RETURN; 4154 } 4155 4156 return IPR_RC_JOB_CONTINUE; 4157 } 4158 4159 /** 4160 * ipr_get_mode_page - Locate specified mode page 4161 * @mode_pages: mode page buffer 4162 * @page_code: page code to find 4163 * @len: minimum required length for mode page 4164 * 4165 * Return value: 4166 * pointer to mode page / NULL on failure 4167 **/ 4168 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 4169 u32 page_code, u32 len) 4170 { 4171 struct ipr_mode_page_hdr *mode_hdr; 4172 u32 page_length; 4173 u32 length; 4174 4175 if (!mode_pages || (mode_pages->hdr.length == 0)) 4176 return NULL; 4177 4178 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 4179 mode_hdr = (struct ipr_mode_page_hdr *) 4180 (mode_pages->data + mode_pages->hdr.block_desc_len); 4181 4182 while (length) { 4183 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 4184 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 4185 return mode_hdr; 4186 break; 4187 } else { 4188 page_length = (sizeof(struct ipr_mode_page_hdr) + 4189 mode_hdr->page_length); 4190 length -= page_length; 4191 mode_hdr = (struct ipr_mode_page_hdr *) 4192 ((unsigned long)mode_hdr + page_length); 4193 } 4194 } 4195 return NULL; 4196 } 4197 4198 /** 4199 * ipr_check_term_power - Check for term power errors 4200 * @ioa_cfg: ioa config struct 4201 * @mode_pages: IOAFP mode pages buffer 4202 * 4203 * Check the IOAFP's mode page 28 for term power errors 4204 * 4205 * Return value: 4206 * nothing 4207 **/ 4208 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 4209 struct ipr_mode_pages *mode_pages) 4210 { 4211 int i; 4212 int entry_length; 4213 struct ipr_dev_bus_entry *bus; 4214 struct ipr_mode_page28 *mode_page; 4215 4216 mode_page = ipr_get_mode_page(mode_pages, 0x28, 4217 sizeof(struct ipr_mode_page28)); 4218 4219 entry_length = mode_page->entry_length; 4220 4221 bus = mode_page->bus; 4222 4223 for (i = 0; i < mode_page->num_entries; i++) { 4224 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 4225 dev_err(&ioa_cfg->pdev->dev, 4226 "Term power is absent on scsi bus %d\n", 4227 bus->res_addr.bus); 4228 } 4229 4230 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 4231 } 4232 } 4233 4234 /** 4235 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 4236 * @ioa_cfg: ioa config struct 4237 * 4238 * Looks through the config table checking for SES devices. If 4239 * the SES device is in the SES table indicating a maximum SCSI 4240 * bus speed, the speed is limited for the bus. 4241 * 4242 * Return value: 4243 * none 4244 **/ 4245 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 4246 { 4247 u32 max_xfer_rate; 4248 int i; 4249 4250 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 4251 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 4252 ioa_cfg->bus_attr[i].bus_width); 4253 4254 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 4255 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 4256 } 4257 } 4258 4259 /** 4260 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 4261 * @ioa_cfg: ioa config struct 4262 * @mode_pages: mode page 28 buffer 4263 * 4264 * Updates mode page 28 based on driver configuration 4265 * 4266 * Return value: 4267 * none 4268 **/ 4269 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 4270 struct ipr_mode_pages *mode_pages) 4271 { 4272 int i, entry_length; 4273 struct ipr_dev_bus_entry *bus; 4274 struct ipr_bus_attributes *bus_attr; 4275 struct ipr_mode_page28 *mode_page; 4276 4277 mode_page = ipr_get_mode_page(mode_pages, 0x28, 4278 sizeof(struct ipr_mode_page28)); 4279 4280 entry_length = mode_page->entry_length; 4281 4282 /* Loop for each device bus entry */ 4283 for (i = 0, bus = mode_page->bus; 4284 i < mode_page->num_entries; 4285 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 4286 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 4287 dev_err(&ioa_cfg->pdev->dev, 4288 "Invalid resource address reported: 0x%08X\n", 4289 IPR_GET_PHYS_LOC(bus->res_addr)); 4290 continue; 4291 } 4292 4293 bus_attr = &ioa_cfg->bus_attr[i]; 4294 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 4295 bus->bus_width = bus_attr->bus_width; 4296 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 4297 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 4298 if (bus_attr->qas_enabled) 4299 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 4300 else 4301 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 4302 } 4303 } 4304 4305 /** 4306 * ipr_build_mode_select - Build a mode select command 4307 * @ipr_cmd: ipr command struct 4308 * @res_handle: resource handle to send command to 4309 * @parm: Byte 2 of Mode Sense command 4310 * @dma_addr: DMA buffer address 4311 * @xfer_len: data transfer length 4312 * 4313 * Return value: 4314 * none 4315 **/ 4316 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 4317 __be32 res_handle, u8 parm, u32 dma_addr, 4318 u8 xfer_len) 4319 { 4320 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4321 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4322 4323 ioarcb->res_handle = res_handle; 4324 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 4325 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4326 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 4327 ioarcb->cmd_pkt.cdb[1] = parm; 4328 ioarcb->cmd_pkt.cdb[4] = xfer_len; 4329 4330 ioadl->flags_and_data_len = 4331 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len); 4332 ioadl->address = cpu_to_be32(dma_addr); 4333 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4334 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len); 4335 } 4336 4337 /** 4338 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 4339 * @ipr_cmd: ipr command struct 4340 * 4341 * This function sets up the SCSI bus attributes and sends 4342 * a Mode Select for Page 28 to activate them. 4343 * 4344 * Return value: 4345 * IPR_RC_JOB_RETURN 4346 **/ 4347 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 4348 { 4349 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4350 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 4351 int length; 4352 4353 ENTER; 4354 if (ioa_cfg->saved_mode_pages) { 4355 memcpy(mode_pages, ioa_cfg->saved_mode_pages, 4356 ioa_cfg->saved_mode_page_len); 4357 length = ioa_cfg->saved_mode_page_len; 4358 } else { 4359 ipr_scsi_bus_speed_limit(ioa_cfg); 4360 ipr_check_term_power(ioa_cfg, mode_pages); 4361 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 4362 length = mode_pages->hdr.length + 1; 4363 mode_pages->hdr.length = 0; 4364 } 4365 4366 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 4367 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 4368 length); 4369 4370 ipr_cmd->job_step = ipr_set_supported_devs; 4371 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 4372 struct ipr_resource_entry, queue); 4373 4374 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4375 4376 LEAVE; 4377 return IPR_RC_JOB_RETURN; 4378 } 4379 4380 /** 4381 * ipr_build_mode_sense - Builds a mode sense command 4382 * @ipr_cmd: ipr command struct 4383 * @res: resource entry struct 4384 * @parm: Byte 2 of mode sense command 4385 * @dma_addr: DMA address of mode sense buffer 4386 * @xfer_len: Size of DMA buffer 4387 * 4388 * Return value: 4389 * none 4390 **/ 4391 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 4392 __be32 res_handle, 4393 u8 parm, u32 dma_addr, u8 xfer_len) 4394 { 4395 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4396 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4397 4398 ioarcb->res_handle = res_handle; 4399 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 4400 ioarcb->cmd_pkt.cdb[2] = parm; 4401 ioarcb->cmd_pkt.cdb[4] = xfer_len; 4402 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 4403 4404 ioadl->flags_and_data_len = 4405 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 4406 ioadl->address = cpu_to_be32(dma_addr); 4407 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4408 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 4409 } 4410 4411 /** 4412 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 4413 * @ipr_cmd: ipr command struct 4414 * 4415 * This function send a Page 28 mode sense to the IOA to 4416 * retrieve SCSI bus attributes. 4417 * 4418 * Return value: 4419 * IPR_RC_JOB_RETURN 4420 **/ 4421 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 4422 { 4423 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4424 4425 ENTER; 4426 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 4427 0x28, ioa_cfg->vpd_cbs_dma + 4428 offsetof(struct ipr_misc_cbs, mode_pages), 4429 sizeof(struct ipr_mode_pages)); 4430 4431 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 4432 4433 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4434 4435 LEAVE; 4436 return IPR_RC_JOB_RETURN; 4437 } 4438 4439 /** 4440 * ipr_init_res_table - Initialize the resource table 4441 * @ipr_cmd: ipr command struct 4442 * 4443 * This function looks through the existing resource table, comparing 4444 * it with the config table. This function will take care of old/new 4445 * devices and schedule adding/removing them from the mid-layer 4446 * as appropriate. 4447 * 4448 * Return value: 4449 * IPR_RC_JOB_CONTINUE 4450 **/ 4451 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 4452 { 4453 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4454 struct ipr_resource_entry *res, *temp; 4455 struct ipr_config_table_entry *cfgte; 4456 int found, i; 4457 LIST_HEAD(old_res); 4458 4459 ENTER; 4460 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ) 4461 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 4462 4463 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 4464 list_move_tail(&res->queue, &old_res); 4465 4466 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) { 4467 cfgte = &ioa_cfg->cfg_table->dev[i]; 4468 found = 0; 4469 4470 list_for_each_entry_safe(res, temp, &old_res, queue) { 4471 if (!memcmp(&res->cfgte.res_addr, 4472 &cfgte->res_addr, sizeof(cfgte->res_addr))) { 4473 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 4474 found = 1; 4475 break; 4476 } 4477 } 4478 4479 if (!found) { 4480 if (list_empty(&ioa_cfg->free_res_q)) { 4481 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 4482 break; 4483 } 4484 4485 found = 1; 4486 res = list_entry(ioa_cfg->free_res_q.next, 4487 struct ipr_resource_entry, queue); 4488 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 4489 ipr_init_res_entry(res); 4490 res->add_to_ml = 1; 4491 } 4492 4493 if (found) 4494 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 4495 } 4496 4497 list_for_each_entry_safe(res, temp, &old_res, queue) { 4498 if (res->sdev) { 4499 res->del_from_ml = 1; 4500 res->sdev->hostdata = NULL; 4501 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 4502 } else { 4503 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 4504 } 4505 } 4506 4507 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 4508 4509 LEAVE; 4510 return IPR_RC_JOB_CONTINUE; 4511 } 4512 4513 /** 4514 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 4515 * @ipr_cmd: ipr command struct 4516 * 4517 * This function sends a Query IOA Configuration command 4518 * to the adapter to retrieve the IOA configuration table. 4519 * 4520 * Return value: 4521 * IPR_RC_JOB_RETURN 4522 **/ 4523 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 4524 { 4525 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4526 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4527 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4528 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 4529 4530 ENTER; 4531 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 4532 ucode_vpd->major_release, ucode_vpd->card_type, 4533 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 4534 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4535 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 4536 4537 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 4538 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff; 4539 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff; 4540 4541 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4542 ioarcb->read_data_transfer_length = 4543 cpu_to_be32(sizeof(struct ipr_config_table)); 4544 4545 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma); 4546 ioadl->flags_and_data_len = 4547 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table)); 4548 4549 ipr_cmd->job_step = ipr_init_res_table; 4550 4551 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4552 4553 LEAVE; 4554 return IPR_RC_JOB_RETURN; 4555 } 4556 4557 /** 4558 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 4559 * @ipr_cmd: ipr command struct 4560 * 4561 * This utility function sends an inquiry to the adapter. 4562 * 4563 * Return value: 4564 * none 4565 **/ 4566 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 4567 u32 dma_addr, u8 xfer_len) 4568 { 4569 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4570 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4571 4572 ENTER; 4573 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 4574 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 4575 4576 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 4577 ioarcb->cmd_pkt.cdb[1] = flags; 4578 ioarcb->cmd_pkt.cdb[2] = page; 4579 ioarcb->cmd_pkt.cdb[4] = xfer_len; 4580 4581 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4582 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 4583 4584 ioadl->address = cpu_to_be32(dma_addr); 4585 ioadl->flags_and_data_len = 4586 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 4587 4588 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4589 LEAVE; 4590 } 4591 4592 /** 4593 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 4594 * @ipr_cmd: ipr command struct 4595 * 4596 * This function sends a Page 3 inquiry to the adapter 4597 * to retrieve software VPD information. 4598 * 4599 * Return value: 4600 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 4601 **/ 4602 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 4603 { 4604 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4605 char type[5]; 4606 4607 ENTER; 4608 4609 /* Grab the type out of the VPD and store it away */ 4610 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 4611 type[4] = '\0'; 4612 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 4613 4614 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 4615 4616 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 4617 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 4618 sizeof(struct ipr_inquiry_page3)); 4619 4620 LEAVE; 4621 return IPR_RC_JOB_RETURN; 4622 } 4623 4624 /** 4625 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 4626 * @ipr_cmd: ipr command struct 4627 * 4628 * This function sends a standard inquiry to the adapter. 4629 * 4630 * Return value: 4631 * IPR_RC_JOB_RETURN 4632 **/ 4633 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 4634 { 4635 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4636 4637 ENTER; 4638 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 4639 4640 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 4641 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 4642 sizeof(struct ipr_ioa_vpd)); 4643 4644 LEAVE; 4645 return IPR_RC_JOB_RETURN; 4646 } 4647 4648 /** 4649 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ. 4650 * @ipr_cmd: ipr command struct 4651 * 4652 * This function send an Identify Host Request Response Queue 4653 * command to establish the HRRQ with the adapter. 4654 * 4655 * Return value: 4656 * IPR_RC_JOB_RETURN 4657 **/ 4658 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd) 4659 { 4660 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4661 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4662 4663 ENTER; 4664 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 4665 4666 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 4667 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 4668 4669 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4670 ioarcb->cmd_pkt.cdb[2] = 4671 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff; 4672 ioarcb->cmd_pkt.cdb[3] = 4673 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff; 4674 ioarcb->cmd_pkt.cdb[4] = 4675 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff; 4676 ioarcb->cmd_pkt.cdb[5] = 4677 ((u32) ioa_cfg->host_rrq_dma) & 0xff; 4678 ioarcb->cmd_pkt.cdb[7] = 4679 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; 4680 ioarcb->cmd_pkt.cdb[8] = 4681 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; 4682 4683 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 4684 4685 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4686 4687 LEAVE; 4688 return IPR_RC_JOB_RETURN; 4689 } 4690 4691 /** 4692 * ipr_reset_timer_done - Adapter reset timer function 4693 * @ipr_cmd: ipr command struct 4694 * 4695 * Description: This function is used in adapter reset processing 4696 * for timing events. If the reset_cmd pointer in the IOA 4697 * config struct is not this adapter's we are doing nested 4698 * resets and fail_all_ops will take care of freeing the 4699 * command block. 4700 * 4701 * Return value: 4702 * none 4703 **/ 4704 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 4705 { 4706 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4707 unsigned long lock_flags = 0; 4708 4709 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4710 4711 if (ioa_cfg->reset_cmd == ipr_cmd) { 4712 list_del(&ipr_cmd->queue); 4713 ipr_cmd->done(ipr_cmd); 4714 } 4715 4716 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4717 } 4718 4719 /** 4720 * ipr_reset_start_timer - Start a timer for adapter reset job 4721 * @ipr_cmd: ipr command struct 4722 * @timeout: timeout value 4723 * 4724 * Description: This function is used in adapter reset processing 4725 * for timing events. If the reset_cmd pointer in the IOA 4726 * config struct is not this adapter's we are doing nested 4727 * resets and fail_all_ops will take care of freeing the 4728 * command block. 4729 * 4730 * Return value: 4731 * none 4732 **/ 4733 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 4734 unsigned long timeout) 4735 { 4736 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 4737 ipr_cmd->done = ipr_reset_ioa_job; 4738 4739 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 4740 ipr_cmd->timer.expires = jiffies + timeout; 4741 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 4742 add_timer(&ipr_cmd->timer); 4743 } 4744 4745 /** 4746 * ipr_init_ioa_mem - Initialize ioa_cfg control block 4747 * @ioa_cfg: ioa cfg struct 4748 * 4749 * Return value: 4750 * nothing 4751 **/ 4752 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 4753 { 4754 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); 4755 4756 /* Initialize Host RRQ pointers */ 4757 ioa_cfg->hrrq_start = ioa_cfg->host_rrq; 4758 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; 4759 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 4760 ioa_cfg->toggle_bit = 1; 4761 4762 /* Zero out config table */ 4763 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table)); 4764 } 4765 4766 /** 4767 * ipr_reset_enable_ioa - Enable the IOA following a reset. 4768 * @ipr_cmd: ipr command struct 4769 * 4770 * This function reinitializes some control blocks and 4771 * enables destructive diagnostics on the adapter. 4772 * 4773 * Return value: 4774 * IPR_RC_JOB_RETURN 4775 **/ 4776 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 4777 { 4778 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4779 volatile u32 int_reg; 4780 4781 ENTER; 4782 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq; 4783 ipr_init_ioa_mem(ioa_cfg); 4784 4785 ioa_cfg->allow_interrupts = 1; 4786 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 4787 4788 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 4789 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 4790 ioa_cfg->regs.clr_interrupt_mask_reg); 4791 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 4792 return IPR_RC_JOB_CONTINUE; 4793 } 4794 4795 /* Enable destructive diagnostics on IOA */ 4796 writel(IPR_DOORBELL, ioa_cfg->regs.set_uproc_interrupt_reg); 4797 4798 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg); 4799 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 4800 4801 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 4802 4803 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 4804 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ); 4805 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 4806 ipr_cmd->done = ipr_reset_ioa_job; 4807 add_timer(&ipr_cmd->timer); 4808 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 4809 4810 LEAVE; 4811 return IPR_RC_JOB_RETURN; 4812 } 4813 4814 /** 4815 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 4816 * @ipr_cmd: ipr command struct 4817 * 4818 * This function is invoked when an adapter dump has run out 4819 * of processing time. 4820 * 4821 * Return value: 4822 * IPR_RC_JOB_CONTINUE 4823 **/ 4824 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 4825 { 4826 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4827 4828 if (ioa_cfg->sdt_state == GET_DUMP) 4829 ioa_cfg->sdt_state = ABORT_DUMP; 4830 4831 ipr_cmd->job_step = ipr_reset_alert; 4832 4833 return IPR_RC_JOB_CONTINUE; 4834 } 4835 4836 /** 4837 * ipr_unit_check_no_data - Log a unit check/no data error log 4838 * @ioa_cfg: ioa config struct 4839 * 4840 * Logs an error indicating the adapter unit checked, but for some 4841 * reason, we were unable to fetch the unit check buffer. 4842 * 4843 * Return value: 4844 * nothing 4845 **/ 4846 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 4847 { 4848 ioa_cfg->errors_logged++; 4849 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 4850 } 4851 4852 /** 4853 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 4854 * @ioa_cfg: ioa config struct 4855 * 4856 * Fetches the unit check buffer from the adapter by clocking the data 4857 * through the mailbox register. 4858 * 4859 * Return value: 4860 * nothing 4861 **/ 4862 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 4863 { 4864 unsigned long mailbox; 4865 struct ipr_hostrcb *hostrcb; 4866 struct ipr_uc_sdt sdt; 4867 int rc, length; 4868 4869 mailbox = readl(ioa_cfg->ioa_mailbox); 4870 4871 if (!ipr_sdt_is_fmt2(mailbox)) { 4872 ipr_unit_check_no_data(ioa_cfg); 4873 return; 4874 } 4875 4876 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 4877 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 4878 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 4879 4880 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) || 4881 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) { 4882 ipr_unit_check_no_data(ioa_cfg); 4883 return; 4884 } 4885 4886 /* Find length of the first sdt entry (UC buffer) */ 4887 length = (be32_to_cpu(sdt.entry[0].end_offset) - 4888 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK; 4889 4890 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 4891 struct ipr_hostrcb, queue); 4892 list_del(&hostrcb->queue); 4893 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 4894 4895 rc = ipr_get_ldump_data_section(ioa_cfg, 4896 be32_to_cpu(sdt.entry[0].bar_str_offset), 4897 (__be32 *)&hostrcb->hcam, 4898 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 4899 4900 if (!rc) 4901 ipr_handle_log_data(ioa_cfg, hostrcb); 4902 else 4903 ipr_unit_check_no_data(ioa_cfg); 4904 4905 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 4906 } 4907 4908 /** 4909 * ipr_reset_restore_cfg_space - Restore PCI config space. 4910 * @ipr_cmd: ipr command struct 4911 * 4912 * Description: This function restores the saved PCI config space of 4913 * the adapter, fails all outstanding ops back to the callers, and 4914 * fetches the dump/unit check if applicable to this reset. 4915 * 4916 * Return value: 4917 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 4918 **/ 4919 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 4920 { 4921 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4922 int rc; 4923 4924 ENTER; 4925 rc = pci_restore_state(ioa_cfg->pdev); 4926 4927 if (rc != PCIBIOS_SUCCESSFUL) { 4928 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 4929 return IPR_RC_JOB_CONTINUE; 4930 } 4931 4932 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 4933 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 4934 return IPR_RC_JOB_CONTINUE; 4935 } 4936 4937 ipr_fail_all_ops(ioa_cfg); 4938 4939 if (ioa_cfg->ioa_unit_checked) { 4940 ioa_cfg->ioa_unit_checked = 0; 4941 ipr_get_unit_check_buffer(ioa_cfg); 4942 ipr_cmd->job_step = ipr_reset_alert; 4943 ipr_reset_start_timer(ipr_cmd, 0); 4944 return IPR_RC_JOB_RETURN; 4945 } 4946 4947 if (ioa_cfg->in_ioa_bringdown) { 4948 ipr_cmd->job_step = ipr_ioa_bringdown_done; 4949 } else { 4950 ipr_cmd->job_step = ipr_reset_enable_ioa; 4951 4952 if (GET_DUMP == ioa_cfg->sdt_state) { 4953 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); 4954 ipr_cmd->job_step = ipr_reset_wait_for_dump; 4955 schedule_work(&ioa_cfg->work_q); 4956 return IPR_RC_JOB_RETURN; 4957 } 4958 } 4959 4960 ENTER; 4961 return IPR_RC_JOB_CONTINUE; 4962 } 4963 4964 /** 4965 * ipr_reset_start_bist - Run BIST on the adapter. 4966 * @ipr_cmd: ipr command struct 4967 * 4968 * Description: This function runs BIST on the adapter, then delays 2 seconds. 4969 * 4970 * Return value: 4971 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 4972 **/ 4973 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 4974 { 4975 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4976 int rc; 4977 4978 ENTER; 4979 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 4980 4981 if (rc != PCIBIOS_SUCCESSFUL) { 4982 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 4983 rc = IPR_RC_JOB_CONTINUE; 4984 } else { 4985 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 4986 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 4987 rc = IPR_RC_JOB_RETURN; 4988 } 4989 4990 LEAVE; 4991 return rc; 4992 } 4993 4994 /** 4995 * ipr_reset_allowed - Query whether or not IOA can be reset 4996 * @ioa_cfg: ioa config struct 4997 * 4998 * Return value: 4999 * 0 if reset not allowed / non-zero if reset is allowed 5000 **/ 5001 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 5002 { 5003 volatile u32 temp_reg; 5004 5005 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 5006 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 5007 } 5008 5009 /** 5010 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 5011 * @ipr_cmd: ipr command struct 5012 * 5013 * Description: This function waits for adapter permission to run BIST, 5014 * then runs BIST. If the adapter does not give permission after a 5015 * reasonable time, we will reset the adapter anyway. The impact of 5016 * resetting the adapter without warning the adapter is the risk of 5017 * losing the persistent error log on the adapter. If the adapter is 5018 * reset while it is writing to the flash on the adapter, the flash 5019 * segment will have bad ECC and be zeroed. 5020 * 5021 * Return value: 5022 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5023 **/ 5024 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 5025 { 5026 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5027 int rc = IPR_RC_JOB_RETURN; 5028 5029 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 5030 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 5031 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 5032 } else { 5033 ipr_cmd->job_step = ipr_reset_start_bist; 5034 rc = IPR_RC_JOB_CONTINUE; 5035 } 5036 5037 return rc; 5038 } 5039 5040 /** 5041 * ipr_reset_alert_part2 - Alert the adapter of a pending reset 5042 * @ipr_cmd: ipr command struct 5043 * 5044 * Description: This function alerts the adapter that it will be reset. 5045 * If memory space is not currently enabled, proceed directly 5046 * to running BIST on the adapter. The timer must always be started 5047 * so we guarantee we do not run BIST from ipr_isr. 5048 * 5049 * Return value: 5050 * IPR_RC_JOB_RETURN 5051 **/ 5052 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 5053 { 5054 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5055 u16 cmd_reg; 5056 int rc; 5057 5058 ENTER; 5059 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 5060 5061 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 5062 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 5063 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg); 5064 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 5065 } else { 5066 ipr_cmd->job_step = ipr_reset_start_bist; 5067 } 5068 5069 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 5070 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 5071 5072 LEAVE; 5073 return IPR_RC_JOB_RETURN; 5074 } 5075 5076 /** 5077 * ipr_reset_ucode_download_done - Microcode download completion 5078 * @ipr_cmd: ipr command struct 5079 * 5080 * Description: This function unmaps the microcode download buffer. 5081 * 5082 * Return value: 5083 * IPR_RC_JOB_CONTINUE 5084 **/ 5085 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 5086 { 5087 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5088 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 5089 5090 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, 5091 sglist->num_sg, DMA_TO_DEVICE); 5092 5093 ipr_cmd->job_step = ipr_reset_alert; 5094 return IPR_RC_JOB_CONTINUE; 5095 } 5096 5097 /** 5098 * ipr_reset_ucode_download - Download microcode to the adapter 5099 * @ipr_cmd: ipr command struct 5100 * 5101 * Description: This function checks to see if it there is microcode 5102 * to download to the adapter. If there is, a download is performed. 5103 * 5104 * Return value: 5105 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5106 **/ 5107 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 5108 { 5109 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5110 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 5111 5112 ENTER; 5113 ipr_cmd->job_step = ipr_reset_alert; 5114 5115 if (!sglist) 5116 return IPR_RC_JOB_CONTINUE; 5117 5118 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5119 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5120 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 5121 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 5122 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 5123 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 5124 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 5125 5126 if (ipr_map_ucode_buffer(ipr_cmd, sglist, sglist->buffer_len)) { 5127 dev_err(&ioa_cfg->pdev->dev, 5128 "Failed to map microcode download buffer\n"); 5129 return IPR_RC_JOB_CONTINUE; 5130 } 5131 5132 ipr_cmd->job_step = ipr_reset_ucode_download_done; 5133 5134 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 5135 IPR_WRITE_BUFFER_TIMEOUT); 5136 5137 LEAVE; 5138 return IPR_RC_JOB_RETURN; 5139 } 5140 5141 /** 5142 * ipr_reset_shutdown_ioa - Shutdown the adapter 5143 * @ipr_cmd: ipr command struct 5144 * 5145 * Description: This function issues an adapter shutdown of the 5146 * specified type to the specified adapter as part of the 5147 * adapter reset job. 5148 * 5149 * Return value: 5150 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5151 **/ 5152 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 5153 { 5154 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5155 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 5156 unsigned long timeout; 5157 int rc = IPR_RC_JOB_CONTINUE; 5158 5159 ENTER; 5160 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { 5161 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5162 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5163 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 5164 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 5165 5166 if (shutdown_type == IPR_SHUTDOWN_ABBREV) 5167 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 5168 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 5169 timeout = IPR_INTERNAL_TIMEOUT; 5170 else 5171 timeout = IPR_SHUTDOWN_TIMEOUT; 5172 5173 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 5174 5175 rc = IPR_RC_JOB_RETURN; 5176 ipr_cmd->job_step = ipr_reset_ucode_download; 5177 } else 5178 ipr_cmd->job_step = ipr_reset_alert; 5179 5180 LEAVE; 5181 return rc; 5182 } 5183 5184 /** 5185 * ipr_reset_ioa_job - Adapter reset job 5186 * @ipr_cmd: ipr command struct 5187 * 5188 * Description: This function is the job router for the adapter reset job. 5189 * 5190 * Return value: 5191 * none 5192 **/ 5193 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 5194 { 5195 u32 rc, ioasc; 5196 unsigned long scratch = ipr_cmd->u.scratch; 5197 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5198 5199 do { 5200 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5201 5202 if (ioa_cfg->reset_cmd != ipr_cmd) { 5203 /* 5204 * We are doing nested adapter resets and this is 5205 * not the current reset job. 5206 */ 5207 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5208 return; 5209 } 5210 5211 if (IPR_IOASC_SENSE_KEY(ioasc)) { 5212 dev_err(&ioa_cfg->pdev->dev, 5213 "0x%02X failed with IOASC: 0x%08X\n", 5214 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 5215 5216 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5217 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5218 return; 5219 } 5220 5221 ipr_reinit_ipr_cmnd(ipr_cmd); 5222 ipr_cmd->u.scratch = scratch; 5223 rc = ipr_cmd->job_step(ipr_cmd); 5224 } while(rc == IPR_RC_JOB_CONTINUE); 5225 } 5226 5227 /** 5228 * _ipr_initiate_ioa_reset - Initiate an adapter reset 5229 * @ioa_cfg: ioa config struct 5230 * @job_step: first job step of reset job 5231 * @shutdown_type: shutdown type 5232 * 5233 * Description: This function will initiate the reset of the given adapter 5234 * starting at the selected job step. 5235 * If the caller needs to wait on the completion of the reset, 5236 * the caller must sleep on the reset_wait_q. 5237 * 5238 * Return value: 5239 * none 5240 **/ 5241 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 5242 int (*job_step) (struct ipr_cmnd *), 5243 enum ipr_shutdown_type shutdown_type) 5244 { 5245 struct ipr_cmnd *ipr_cmd; 5246 5247 ioa_cfg->in_reset_reload = 1; 5248 ioa_cfg->allow_cmds = 0; 5249 scsi_block_requests(ioa_cfg->host); 5250 5251 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5252 ioa_cfg->reset_cmd = ipr_cmd; 5253 ipr_cmd->job_step = job_step; 5254 ipr_cmd->u.shutdown_type = shutdown_type; 5255 5256 ipr_reset_ioa_job(ipr_cmd); 5257 } 5258 5259 /** 5260 * ipr_initiate_ioa_reset - Initiate an adapter reset 5261 * @ioa_cfg: ioa config struct 5262 * @shutdown_type: shutdown type 5263 * 5264 * Description: This function will initiate the reset of the given adapter. 5265 * If the caller needs to wait on the completion of the reset, 5266 * the caller must sleep on the reset_wait_q. 5267 * 5268 * Return value: 5269 * none 5270 **/ 5271 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 5272 enum ipr_shutdown_type shutdown_type) 5273 { 5274 if (ioa_cfg->ioa_is_dead) 5275 return; 5276 5277 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) 5278 ioa_cfg->sdt_state = ABORT_DUMP; 5279 5280 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 5281 dev_err(&ioa_cfg->pdev->dev, 5282 "IOA taken offline - error recovery failed\n"); 5283 5284 ioa_cfg->reset_retries = 0; 5285 ioa_cfg->ioa_is_dead = 1; 5286 5287 if (ioa_cfg->in_ioa_bringdown) { 5288 ioa_cfg->reset_cmd = NULL; 5289 ioa_cfg->in_reset_reload = 0; 5290 ipr_fail_all_ops(ioa_cfg); 5291 wake_up_all(&ioa_cfg->reset_wait_q); 5292 5293 spin_unlock_irq(ioa_cfg->host->host_lock); 5294 scsi_unblock_requests(ioa_cfg->host); 5295 spin_lock_irq(ioa_cfg->host->host_lock); 5296 return; 5297 } else { 5298 ioa_cfg->in_ioa_bringdown = 1; 5299 shutdown_type = IPR_SHUTDOWN_NONE; 5300 } 5301 } 5302 5303 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 5304 shutdown_type); 5305 } 5306 5307 /** 5308 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 5309 * @ioa_cfg: ioa cfg struct 5310 * 5311 * Description: This is the second phase of adapter intialization 5312 * This function takes care of initilizing the adapter to the point 5313 * where it can accept new commands. 5314 5315 * Return value: 5316 * 0 on sucess / -EIO on failure 5317 **/ 5318 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 5319 { 5320 int rc = 0; 5321 unsigned long host_lock_flags = 0; 5322 5323 ENTER; 5324 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 5325 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 5326 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, IPR_SHUTDOWN_NONE); 5327 5328 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 5329 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5330 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 5331 5332 if (ioa_cfg->ioa_is_dead) { 5333 rc = -EIO; 5334 } else if (ipr_invalid_adapter(ioa_cfg)) { 5335 if (!ipr_testmode) 5336 rc = -EIO; 5337 5338 dev_err(&ioa_cfg->pdev->dev, 5339 "Adapter not supported in this hardware configuration.\n"); 5340 } 5341 5342 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 5343 5344 LEAVE; 5345 return rc; 5346 } 5347 5348 /** 5349 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 5350 * @ioa_cfg: ioa config struct 5351 * 5352 * Return value: 5353 * none 5354 **/ 5355 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 5356 { 5357 int i; 5358 5359 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 5360 if (ioa_cfg->ipr_cmnd_list[i]) 5361 pci_pool_free(ioa_cfg->ipr_cmd_pool, 5362 ioa_cfg->ipr_cmnd_list[i], 5363 ioa_cfg->ipr_cmnd_list_dma[i]); 5364 5365 ioa_cfg->ipr_cmnd_list[i] = NULL; 5366 } 5367 5368 if (ioa_cfg->ipr_cmd_pool) 5369 pci_pool_destroy (ioa_cfg->ipr_cmd_pool); 5370 5371 ioa_cfg->ipr_cmd_pool = NULL; 5372 } 5373 5374 /** 5375 * ipr_free_mem - Frees memory allocated for an adapter 5376 * @ioa_cfg: ioa cfg struct 5377 * 5378 * Return value: 5379 * nothing 5380 **/ 5381 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 5382 { 5383 int i; 5384 5385 kfree(ioa_cfg->res_entries); 5386 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), 5387 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 5388 ipr_free_cmd_blks(ioa_cfg); 5389 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 5390 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 5391 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table), 5392 ioa_cfg->cfg_table, 5393 ioa_cfg->cfg_table_dma); 5394 5395 for (i = 0; i < IPR_NUM_HCAMS; i++) { 5396 pci_free_consistent(ioa_cfg->pdev, 5397 sizeof(struct ipr_hostrcb), 5398 ioa_cfg->hostrcb[i], 5399 ioa_cfg->hostrcb_dma[i]); 5400 } 5401 5402 ipr_free_dump(ioa_cfg); 5403 kfree(ioa_cfg->saved_mode_pages); 5404 kfree(ioa_cfg->trace); 5405 } 5406 5407 /** 5408 * ipr_free_all_resources - Free all allocated resources for an adapter. 5409 * @ipr_cmd: ipr command struct 5410 * 5411 * This function frees all allocated resources for the 5412 * specified adapter. 5413 * 5414 * Return value: 5415 * none 5416 **/ 5417 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 5418 { 5419 struct pci_dev *pdev = ioa_cfg->pdev; 5420 5421 ENTER; 5422 free_irq(pdev->irq, ioa_cfg); 5423 iounmap(ioa_cfg->hdw_dma_regs); 5424 pci_release_regions(pdev); 5425 ipr_free_mem(ioa_cfg); 5426 scsi_host_put(ioa_cfg->host); 5427 pci_disable_device(pdev); 5428 LEAVE; 5429 } 5430 5431 /** 5432 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 5433 * @ioa_cfg: ioa config struct 5434 * 5435 * Return value: 5436 * 0 on success / -ENOMEM on allocation failure 5437 **/ 5438 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 5439 { 5440 struct ipr_cmnd *ipr_cmd; 5441 struct ipr_ioarcb *ioarcb; 5442 dma_addr_t dma_addr; 5443 int i; 5444 5445 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, 5446 sizeof(struct ipr_cmnd), 8, 0); 5447 5448 if (!ioa_cfg->ipr_cmd_pool) 5449 return -ENOMEM; 5450 5451 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 5452 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr); 5453 5454 if (!ipr_cmd) { 5455 ipr_free_cmd_blks(ioa_cfg); 5456 return -ENOMEM; 5457 } 5458 5459 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 5460 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 5461 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 5462 5463 ioarcb = &ipr_cmd->ioarcb; 5464 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 5465 ioarcb->host_response_handle = cpu_to_be32(i << 2); 5466 ioarcb->write_ioadl_addr = 5467 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); 5468 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 5469 ioarcb->ioasa_host_pci_addr = 5470 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa)); 5471 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 5472 ipr_cmd->cmd_index = i; 5473 ipr_cmd->ioa_cfg = ioa_cfg; 5474 ipr_cmd->sense_buffer_dma = dma_addr + 5475 offsetof(struct ipr_cmnd, sense_buffer); 5476 5477 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5478 } 5479 5480 return 0; 5481 } 5482 5483 /** 5484 * ipr_alloc_mem - Allocate memory for an adapter 5485 * @ioa_cfg: ioa config struct 5486 * 5487 * Return value: 5488 * 0 on success / non-zero for error 5489 **/ 5490 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 5491 { 5492 struct pci_dev *pdev = ioa_cfg->pdev; 5493 int i, rc = -ENOMEM; 5494 5495 ENTER; 5496 ioa_cfg->res_entries = kmalloc(sizeof(struct ipr_resource_entry) * 5497 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL); 5498 5499 if (!ioa_cfg->res_entries) 5500 goto out; 5501 5502 memset(ioa_cfg->res_entries, 0, 5503 sizeof(struct ipr_resource_entry) * IPR_MAX_PHYSICAL_DEVS); 5504 5505 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++) 5506 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 5507 5508 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, 5509 sizeof(struct ipr_misc_cbs), 5510 &ioa_cfg->vpd_cbs_dma); 5511 5512 if (!ioa_cfg->vpd_cbs) 5513 goto out_free_res_entries; 5514 5515 if (ipr_alloc_cmd_blks(ioa_cfg)) 5516 goto out_free_vpd_cbs; 5517 5518 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, 5519 sizeof(u32) * IPR_NUM_CMD_BLKS, 5520 &ioa_cfg->host_rrq_dma); 5521 5522 if (!ioa_cfg->host_rrq) 5523 goto out_ipr_free_cmd_blocks; 5524 5525 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev, 5526 sizeof(struct ipr_config_table), 5527 &ioa_cfg->cfg_table_dma); 5528 5529 if (!ioa_cfg->cfg_table) 5530 goto out_free_host_rrq; 5531 5532 for (i = 0; i < IPR_NUM_HCAMS; i++) { 5533 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, 5534 sizeof(struct ipr_hostrcb), 5535 &ioa_cfg->hostrcb_dma[i]); 5536 5537 if (!ioa_cfg->hostrcb[i]) 5538 goto out_free_hostrcb_dma; 5539 5540 ioa_cfg->hostrcb[i]->hostrcb_dma = 5541 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 5542 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 5543 } 5544 5545 ioa_cfg->trace = kmalloc(sizeof(struct ipr_trace_entry) * 5546 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 5547 5548 if (!ioa_cfg->trace) 5549 goto out_free_hostrcb_dma; 5550 5551 memset(ioa_cfg->trace, 0, 5552 sizeof(struct ipr_trace_entry) * IPR_NUM_TRACE_ENTRIES); 5553 5554 rc = 0; 5555 out: 5556 LEAVE; 5557 return rc; 5558 5559 out_free_hostrcb_dma: 5560 while (i-- > 0) { 5561 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), 5562 ioa_cfg->hostrcb[i], 5563 ioa_cfg->hostrcb_dma[i]); 5564 } 5565 pci_free_consistent(pdev, sizeof(struct ipr_config_table), 5566 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma); 5567 out_free_host_rrq: 5568 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 5569 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 5570 out_ipr_free_cmd_blocks: 5571 ipr_free_cmd_blks(ioa_cfg); 5572 out_free_vpd_cbs: 5573 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), 5574 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 5575 out_free_res_entries: 5576 kfree(ioa_cfg->res_entries); 5577 goto out; 5578 } 5579 5580 /** 5581 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 5582 * @ioa_cfg: ioa config struct 5583 * 5584 * Return value: 5585 * none 5586 **/ 5587 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 5588 { 5589 int i; 5590 5591 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 5592 ioa_cfg->bus_attr[i].bus = i; 5593 ioa_cfg->bus_attr[i].qas_enabled = 0; 5594 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 5595 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 5596 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 5597 else 5598 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 5599 } 5600 } 5601 5602 /** 5603 * ipr_init_ioa_cfg - Initialize IOA config struct 5604 * @ioa_cfg: ioa config struct 5605 * @host: scsi host struct 5606 * @pdev: PCI dev struct 5607 * 5608 * Return value: 5609 * none 5610 **/ 5611 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 5612 struct Scsi_Host *host, struct pci_dev *pdev) 5613 { 5614 const struct ipr_interrupt_offsets *p; 5615 struct ipr_interrupts *t; 5616 void __iomem *base; 5617 5618 ioa_cfg->host = host; 5619 ioa_cfg->pdev = pdev; 5620 ioa_cfg->log_level = ipr_log_level; 5621 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 5622 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 5623 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); 5624 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); 5625 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 5626 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 5627 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 5628 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 5629 5630 INIT_LIST_HEAD(&ioa_cfg->free_q); 5631 INIT_LIST_HEAD(&ioa_cfg->pending_q); 5632 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 5633 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 5634 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 5635 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 5636 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg); 5637 init_waitqueue_head(&ioa_cfg->reset_wait_q); 5638 ioa_cfg->sdt_state = INACTIVE; 5639 5640 ipr_initialize_bus_attr(ioa_cfg); 5641 5642 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 5643 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 5644 host->max_channel = IPR_MAX_BUS_TO_SCAN; 5645 host->unique_id = host->host_no; 5646 host->max_cmd_len = IPR_MAX_CDB_LEN; 5647 pci_set_drvdata(pdev, ioa_cfg); 5648 5649 p = &ioa_cfg->chip_cfg->regs; 5650 t = &ioa_cfg->regs; 5651 base = ioa_cfg->hdw_dma_regs; 5652 5653 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 5654 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 5655 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 5656 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 5657 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 5658 t->ioarrin_reg = base + p->ioarrin_reg; 5659 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 5660 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 5661 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 5662 } 5663 5664 /** 5665 * ipr_get_chip_cfg - Find adapter chip configuration 5666 * @dev_id: PCI device id struct 5667 * 5668 * Return value: 5669 * ptr to chip config on success / NULL on failure 5670 **/ 5671 static const struct ipr_chip_cfg_t * __devinit 5672 ipr_get_chip_cfg(const struct pci_device_id *dev_id) 5673 { 5674 int i; 5675 5676 if (dev_id->driver_data) 5677 return (const struct ipr_chip_cfg_t *)dev_id->driver_data; 5678 5679 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 5680 if (ipr_chip[i].vendor == dev_id->vendor && 5681 ipr_chip[i].device == dev_id->device) 5682 return ipr_chip[i].cfg; 5683 return NULL; 5684 } 5685 5686 /** 5687 * ipr_probe_ioa - Allocates memory and does first stage of initialization 5688 * @pdev: PCI device struct 5689 * @dev_id: PCI device id struct 5690 * 5691 * Return value: 5692 * 0 on success / non-zero on failure 5693 **/ 5694 static int __devinit ipr_probe_ioa(struct pci_dev *pdev, 5695 const struct pci_device_id *dev_id) 5696 { 5697 struct ipr_ioa_cfg *ioa_cfg; 5698 struct Scsi_Host *host; 5699 unsigned long ipr_regs_pci; 5700 void __iomem *ipr_regs; 5701 u32 rc = PCIBIOS_SUCCESSFUL; 5702 5703 ENTER; 5704 5705 if ((rc = pci_enable_device(pdev))) { 5706 dev_err(&pdev->dev, "Cannot enable adapter\n"); 5707 goto out; 5708 } 5709 5710 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 5711 5712 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 5713 5714 if (!host) { 5715 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 5716 rc = -ENOMEM; 5717 goto out_disable; 5718 } 5719 5720 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 5721 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 5722 5723 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id); 5724 5725 if (!ioa_cfg->chip_cfg) { 5726 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 5727 dev_id->vendor, dev_id->device); 5728 goto out_scsi_host_put; 5729 } 5730 5731 ipr_regs_pci = pci_resource_start(pdev, 0); 5732 5733 rc = pci_request_regions(pdev, IPR_NAME); 5734 if (rc < 0) { 5735 dev_err(&pdev->dev, 5736 "Couldn't register memory range of registers\n"); 5737 goto out_scsi_host_put; 5738 } 5739 5740 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0)); 5741 5742 if (!ipr_regs) { 5743 dev_err(&pdev->dev, 5744 "Couldn't map memory range of registers\n"); 5745 rc = -ENOMEM; 5746 goto out_release_regions; 5747 } 5748 5749 ioa_cfg->hdw_dma_regs = ipr_regs; 5750 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 5751 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 5752 5753 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 5754 5755 pci_set_master(pdev); 5756 5757 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 5758 if (rc < 0) { 5759 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); 5760 goto cleanup_nomem; 5761 } 5762 5763 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 5764 ioa_cfg->chip_cfg->cache_line_size); 5765 5766 if (rc != PCIBIOS_SUCCESSFUL) { 5767 dev_err(&pdev->dev, "Write of cache line size failed\n"); 5768 rc = -EIO; 5769 goto cleanup_nomem; 5770 } 5771 5772 /* Save away PCI config space for use following IOA reset */ 5773 rc = pci_save_state(pdev); 5774 5775 if (rc != PCIBIOS_SUCCESSFUL) { 5776 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 5777 rc = -EIO; 5778 goto cleanup_nomem; 5779 } 5780 5781 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 5782 goto cleanup_nomem; 5783 5784 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 5785 goto cleanup_nomem; 5786 5787 rc = ipr_alloc_mem(ioa_cfg); 5788 if (rc < 0) { 5789 dev_err(&pdev->dev, 5790 "Couldn't allocate enough memory for device driver!\n"); 5791 goto cleanup_nomem; 5792 } 5793 5794 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 5795 rc = request_irq(pdev->irq, ipr_isr, SA_SHIRQ, IPR_NAME, ioa_cfg); 5796 5797 if (rc) { 5798 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 5799 pdev->irq, rc); 5800 goto cleanup_nolog; 5801 } 5802 5803 spin_lock(&ipr_driver_lock); 5804 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 5805 spin_unlock(&ipr_driver_lock); 5806 5807 LEAVE; 5808 out: 5809 return rc; 5810 5811 cleanup_nolog: 5812 ipr_free_mem(ioa_cfg); 5813 cleanup_nomem: 5814 iounmap(ipr_regs); 5815 out_release_regions: 5816 pci_release_regions(pdev); 5817 out_scsi_host_put: 5818 scsi_host_put(host); 5819 out_disable: 5820 pci_disable_device(pdev); 5821 goto out; 5822 } 5823 5824 /** 5825 * ipr_scan_vsets - Scans for VSET devices 5826 * @ioa_cfg: ioa config struct 5827 * 5828 * Description: Since the VSET resources do not follow SAM in that we can have 5829 * sparse LUNs with no LUN 0, we have to scan for these ourselves. 5830 * 5831 * Return value: 5832 * none 5833 **/ 5834 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) 5835 { 5836 int target, lun; 5837 5838 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) 5839 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) 5840 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); 5841 } 5842 5843 /** 5844 * ipr_initiate_ioa_bringdown - Bring down an adapter 5845 * @ioa_cfg: ioa config struct 5846 * @shutdown_type: shutdown type 5847 * 5848 * Description: This function will initiate bringing down the adapter. 5849 * This consists of issuing an IOA shutdown to the adapter 5850 * to flush the cache, and running BIST. 5851 * If the caller needs to wait on the completion of the reset, 5852 * the caller must sleep on the reset_wait_q. 5853 * 5854 * Return value: 5855 * none 5856 **/ 5857 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 5858 enum ipr_shutdown_type shutdown_type) 5859 { 5860 ENTER; 5861 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 5862 ioa_cfg->sdt_state = ABORT_DUMP; 5863 ioa_cfg->reset_retries = 0; 5864 ioa_cfg->in_ioa_bringdown = 1; 5865 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 5866 LEAVE; 5867 } 5868 5869 /** 5870 * __ipr_remove - Remove a single adapter 5871 * @pdev: pci device struct 5872 * 5873 * Adapter hot plug remove entry point. 5874 * 5875 * Return value: 5876 * none 5877 **/ 5878 static void __ipr_remove(struct pci_dev *pdev) 5879 { 5880 unsigned long host_lock_flags = 0; 5881 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 5882 ENTER; 5883 5884 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 5885 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 5886 5887 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 5888 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5889 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 5890 5891 spin_lock(&ipr_driver_lock); 5892 list_del(&ioa_cfg->queue); 5893 spin_unlock(&ipr_driver_lock); 5894 5895 if (ioa_cfg->sdt_state == ABORT_DUMP) 5896 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 5897 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 5898 5899 ipr_free_all_resources(ioa_cfg); 5900 5901 LEAVE; 5902 } 5903 5904 /** 5905 * ipr_remove - IOA hot plug remove entry point 5906 * @pdev: pci device struct 5907 * 5908 * Adapter hot plug remove entry point. 5909 * 5910 * Return value: 5911 * none 5912 **/ 5913 static void ipr_remove(struct pci_dev *pdev) 5914 { 5915 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 5916 5917 ENTER; 5918 5919 ioa_cfg->allow_cmds = 0; 5920 flush_scheduled_work(); 5921 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 5922 &ipr_trace_attr); 5923 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj, 5924 &ipr_dump_attr); 5925 scsi_remove_host(ioa_cfg->host); 5926 5927 __ipr_remove(pdev); 5928 5929 LEAVE; 5930 } 5931 5932 /** 5933 * ipr_probe - Adapter hot plug add entry point 5934 * 5935 * Return value: 5936 * 0 on success / non-zero on failure 5937 **/ 5938 static int __devinit ipr_probe(struct pci_dev *pdev, 5939 const struct pci_device_id *dev_id) 5940 { 5941 struct ipr_ioa_cfg *ioa_cfg; 5942 int rc; 5943 5944 rc = ipr_probe_ioa(pdev, dev_id); 5945 5946 if (rc) 5947 return rc; 5948 5949 ioa_cfg = pci_get_drvdata(pdev); 5950 rc = ipr_probe_ioa_part2(ioa_cfg); 5951 5952 if (rc) { 5953 __ipr_remove(pdev); 5954 return rc; 5955 } 5956 5957 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 5958 5959 if (rc) { 5960 __ipr_remove(pdev); 5961 return rc; 5962 } 5963 5964 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj, 5965 &ipr_trace_attr); 5966 5967 if (rc) { 5968 scsi_remove_host(ioa_cfg->host); 5969 __ipr_remove(pdev); 5970 return rc; 5971 } 5972 5973 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj, 5974 &ipr_dump_attr); 5975 5976 if (rc) { 5977 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 5978 &ipr_trace_attr); 5979 scsi_remove_host(ioa_cfg->host); 5980 __ipr_remove(pdev); 5981 return rc; 5982 } 5983 5984 scsi_scan_host(ioa_cfg->host); 5985 ipr_scan_vsets(ioa_cfg); 5986 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); 5987 ioa_cfg->allow_ml_add_del = 1; 5988 schedule_work(&ioa_cfg->work_q); 5989 return 0; 5990 } 5991 5992 /** 5993 * ipr_shutdown - Shutdown handler. 5994 * @dev: device struct 5995 * 5996 * This function is invoked upon system shutdown/reboot. It will issue 5997 * an adapter shutdown to the adapter to flush the write cache. 5998 * 5999 * Return value: 6000 * none 6001 **/ 6002 static void ipr_shutdown(struct device *dev) 6003 { 6004 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(to_pci_dev(dev)); 6005 unsigned long lock_flags = 0; 6006 6007 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6008 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 6009 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6010 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6011 } 6012 6013 static struct pci_device_id ipr_pci_table[] __devinitdata = { 6014 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 6015 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 6016 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6017 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 6018 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 6019 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6020 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 6021 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 6022 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6023 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 6024 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 6025 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6026 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 6027 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 6028 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6029 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 6030 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 6031 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6032 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 6033 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 6034 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6035 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 6036 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 6037 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, 6038 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 6039 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 6040 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, 6041 { } 6042 }; 6043 MODULE_DEVICE_TABLE(pci, ipr_pci_table); 6044 6045 static struct pci_driver ipr_driver = { 6046 .name = IPR_NAME, 6047 .id_table = ipr_pci_table, 6048 .probe = ipr_probe, 6049 .remove = ipr_remove, 6050 .driver = { 6051 .shutdown = ipr_shutdown, 6052 }, 6053 }; 6054 6055 /** 6056 * ipr_init - Module entry point 6057 * 6058 * Return value: 6059 * 0 on success / negative value on failure 6060 **/ 6061 static int __init ipr_init(void) 6062 { 6063 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 6064 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 6065 6066 return pci_module_init(&ipr_driver); 6067 } 6068 6069 /** 6070 * ipr_exit - Module unload 6071 * 6072 * Module unload entry point. 6073 * 6074 * Return value: 6075 * none 6076 **/ 6077 static void __exit ipr_exit(void) 6078 { 6079 pci_unregister_driver(&ipr_driver); 6080 } 6081 6082 module_init(ipr_init); 6083 module_exit(ipr_exit); 6084