ipr.c revision 94d0e7b805961c44e4dc486ffc21075084bb7175
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 */ 88static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head); 89static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL; 90static unsigned int ipr_max_speed = 1; 91static int ipr_testmode = 0; 92static unsigned int ipr_fastfail = 0; 93static unsigned int ipr_transop_timeout = IPR_OPERATIONAL_TIMEOUT; 94static DEFINE_SPINLOCK(ipr_driver_lock); 95 96/* This table describes the differences between DMA controller chips */ 97static 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 130static 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 137static int ipr_max_bus_speeds [] = { 138 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE 139}; 140 141MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); 142MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); 143module_param_named(max_speed, ipr_max_speed, uint, 0); 144MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); 145module_param_named(log_level, ipr_log_level, uint, 0); 146MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); 147module_param_named(testmode, ipr_testmode, int, 0); 148MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); 149module_param_named(fastfail, ipr_fastfail, int, 0); 150MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); 151module_param_named(transop_timeout, ipr_transop_timeout, int, 0); 152MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); 153MODULE_LICENSE("GPL"); 154MODULE_VERSION(IPR_DRIVER_VERSION); 155 156static 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 165static 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 */ 180static const 181struct 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 380static 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 */ 399static int ipr_reset_alert(struct ipr_cmnd *); 400static void ipr_process_ccn(struct ipr_cmnd *); 401static void ipr_process_error(struct ipr_cmnd *); 402static void ipr_reset_ioa_job(struct ipr_cmnd *); 403static 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 **/ 416static 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 **/ 441static 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 **/ 466static 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 **/ 481static 482struct 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 **/ 501static 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 **/ 530static 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 **/ 553static 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 **/ 579static 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 **/ 608static 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 **/ 629static 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 **/ 664static 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 **/ 697static 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 **/ 714static 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 **/ 741static 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 **/ 790static 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 **/ 808static 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 **/ 870static 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 **/ 898static 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 **/ 922static 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 **/ 956static 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 **/ 1011static 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->expected_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 **/ 1083static 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 **/ 1115static 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 **/ 1136static 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 **/ 1212static 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 **/ 1241static 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 **/ 1273static 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 **/ 1308static 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 **/ 1335static const struct ipr_ses_table_entry * 1336ipr_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 **/ 1371static 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 **/ 1404static 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 **/ 1437static 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 **/ 1526static 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 **/ 1587static 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 **/ 1603static 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 **/ 1629static 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 **/ 1650static 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 **/ 1671static 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 **/ 1692static 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 **/ 1827static 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 **/ 1858static 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 1889restart: 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 **/ 1942static 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 1965static 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 **/ 1983static 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 2000static 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 **/ 2016static 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 **/ 2037static 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 2050static 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 **/ 2071static 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 2106static 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 **/ 2125static 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 2145static 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 **/ 2163static 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 **/ 2232static 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 **/ 2254static 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 **/ 2303static 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 **/ 2350static 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 2430static 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 2438static 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 **/ 2458static 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 **/ 2545static 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 **/ 2589static 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 **/ 2622static 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 2646static 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 2656static 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 **/ 2667static 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 **/ 2681static 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 **/ 2719static 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 2735static 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 2743static 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 **/ 2762static 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 **/ 2790static 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 **/ 2816static 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 **/ 2853static 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 **/ 2888static 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 **/ 2919static 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 2973static int ipr_eh_dev_reset(struct scsi_cmnd * cmd) 2974{ 2975 int rc; 2976 2977 spin_lock_irq(cmd->device->host->host_lock); 2978 rc = __ipr_eh_dev_reset(cmd); 2979 spin_unlock_irq(cmd->device->host->host_lock); 2980 2981 return rc; 2982} 2983 2984/** 2985 * ipr_bus_reset_done - Op done function for bus reset. 2986 * @ipr_cmd: ipr command struct 2987 * 2988 * This function is the op done function for a bus reset 2989 * 2990 * Return value: 2991 * none 2992 **/ 2993static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 2994{ 2995 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2996 struct ipr_resource_entry *res; 2997 2998 ENTER; 2999 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3000 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle, 3001 sizeof(res->cfgte.res_handle))) { 3002 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus); 3003 break; 3004 } 3005 } 3006 3007 /* 3008 * If abort has not completed, indicate the reset has, else call the 3009 * abort's done function to wake the sleeping eh thread 3010 */ 3011 if (ipr_cmd->sibling->sibling) 3012 ipr_cmd->sibling->sibling = NULL; 3013 else 3014 ipr_cmd->sibling->done(ipr_cmd->sibling); 3015 3016 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3017 LEAVE; 3018} 3019 3020/** 3021 * ipr_abort_timeout - An abort task has timed out 3022 * @ipr_cmd: ipr command struct 3023 * 3024 * This function handles when an abort task times out. If this 3025 * happens we issue a bus reset since we have resources tied 3026 * up that must be freed before returning to the midlayer. 3027 * 3028 * Return value: 3029 * none 3030 **/ 3031static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 3032{ 3033 struct ipr_cmnd *reset_cmd; 3034 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3035 struct ipr_cmd_pkt *cmd_pkt; 3036 unsigned long lock_flags = 0; 3037 3038 ENTER; 3039 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3040 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 3041 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3042 return; 3043 } 3044 3045 ipr_sdev_err(ipr_cmd->u.sdev, "Abort timed out. Resetting bus\n"); 3046 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3047 ipr_cmd->sibling = reset_cmd; 3048 reset_cmd->sibling = ipr_cmd; 3049 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 3050 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 3051 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3052 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 3053 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 3054 3055 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 3056 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3057 LEAVE; 3058} 3059 3060/** 3061 * ipr_cancel_op - Cancel specified op 3062 * @scsi_cmd: scsi command struct 3063 * 3064 * This function cancels specified op. 3065 * 3066 * Return value: 3067 * SUCCESS / FAILED 3068 **/ 3069static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) 3070{ 3071 struct ipr_cmnd *ipr_cmd; 3072 struct ipr_ioa_cfg *ioa_cfg; 3073 struct ipr_resource_entry *res; 3074 struct ipr_cmd_pkt *cmd_pkt; 3075 u32 ioasc; 3076 int op_found = 0; 3077 3078 ENTER; 3079 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 3080 res = scsi_cmd->device->hostdata; 3081 3082 /* If we are currently going through reset/reload, return failed. 3083 * This will force the mid-layer to call ipr_eh_host_reset, 3084 * which will then go to sleep and wait for the reset to complete 3085 */ 3086 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) 3087 return FAILED; 3088 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res))) 3089 return FAILED; 3090 3091 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3092 if (ipr_cmd->scsi_cmd == scsi_cmd) { 3093 ipr_cmd->done = ipr_scsi_eh_done; 3094 op_found = 1; 3095 break; 3096 } 3097 } 3098 3099 if (!op_found) 3100 return SUCCESS; 3101 3102 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3103 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 3104 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 3105 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3106 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 3107 ipr_cmd->u.sdev = scsi_cmd->device; 3108 3109 ipr_sdev_err(scsi_cmd->device, "Aborting command: %02X\n", scsi_cmd->cmnd[0]); 3110 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 3111 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3112 3113 /* 3114 * If the abort task timed out and we sent a bus reset, we will get 3115 * one the following responses to the abort 3116 */ 3117 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 3118 ioasc = 0; 3119 ipr_trace; 3120 } 3121 3122 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3123 res->needs_sync_complete = 1; 3124 3125 LEAVE; 3126 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); 3127} 3128 3129/** 3130 * ipr_eh_abort - Abort a single op 3131 * @scsi_cmd: scsi command struct 3132 * 3133 * Return value: 3134 * SUCCESS / FAILED 3135 **/ 3136static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) 3137{ 3138 unsigned long flags; 3139 int rc; 3140 3141 ENTER; 3142 3143 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 3144 rc = ipr_cancel_op(scsi_cmd); 3145 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 3146 3147 LEAVE; 3148 return rc; 3149} 3150 3151/** 3152 * ipr_handle_other_interrupt - Handle "other" interrupts 3153 * @ioa_cfg: ioa config struct 3154 * @int_reg: interrupt register 3155 * 3156 * Return value: 3157 * IRQ_NONE / IRQ_HANDLED 3158 **/ 3159static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 3160 volatile u32 int_reg) 3161{ 3162 irqreturn_t rc = IRQ_HANDLED; 3163 3164 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 3165 /* Mask the interrupt */ 3166 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 3167 3168 /* Clear the interrupt */ 3169 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); 3170 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 3171 3172 list_del(&ioa_cfg->reset_cmd->queue); 3173 del_timer(&ioa_cfg->reset_cmd->timer); 3174 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 3175 } else { 3176 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 3177 ioa_cfg->ioa_unit_checked = 1; 3178 else 3179 dev_err(&ioa_cfg->pdev->dev, 3180 "Permanent IOA failure. 0x%08X\n", int_reg); 3181 3182 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 3183 ioa_cfg->sdt_state = GET_DUMP; 3184 3185 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 3186 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3187 } 3188 3189 return rc; 3190} 3191 3192/** 3193 * ipr_isr - Interrupt service routine 3194 * @irq: irq number 3195 * @devp: pointer to ioa config struct 3196 * @regs: pt_regs struct 3197 * 3198 * Return value: 3199 * IRQ_NONE / IRQ_HANDLED 3200 **/ 3201static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs) 3202{ 3203 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 3204 unsigned long lock_flags = 0; 3205 volatile u32 int_reg, int_mask_reg; 3206 u32 ioasc; 3207 u16 cmd_index; 3208 struct ipr_cmnd *ipr_cmd; 3209 irqreturn_t rc = IRQ_NONE; 3210 3211 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3212 3213 /* If interrupts are disabled, ignore the interrupt */ 3214 if (!ioa_cfg->allow_interrupts) { 3215 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3216 return IRQ_NONE; 3217 } 3218 3219 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 3220 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 3221 3222 /* If an interrupt on the adapter did not occur, ignore it */ 3223 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) { 3224 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3225 return IRQ_NONE; 3226 } 3227 3228 while (1) { 3229 ipr_cmd = NULL; 3230 3231 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 3232 ioa_cfg->toggle_bit) { 3233 3234 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & 3235 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 3236 3237 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { 3238 ioa_cfg->errors_logged++; 3239 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n"); 3240 3241 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 3242 ioa_cfg->sdt_state = GET_DUMP; 3243 3244 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3245 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3246 return IRQ_HANDLED; 3247 } 3248 3249 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 3250 3251 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3252 3253 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 3254 3255 list_del(&ipr_cmd->queue); 3256 del_timer(&ipr_cmd->timer); 3257 ipr_cmd->done(ipr_cmd); 3258 3259 rc = IRQ_HANDLED; 3260 3261 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { 3262 ioa_cfg->hrrq_curr++; 3263 } else { 3264 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 3265 ioa_cfg->toggle_bit ^= 1u; 3266 } 3267 } 3268 3269 if (ipr_cmd != NULL) { 3270 /* Clear the PCI interrupt */ 3271 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg); 3272 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 3273 } else 3274 break; 3275 } 3276 3277 if (unlikely(rc == IRQ_NONE)) 3278 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 3279 3280 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3281 return rc; 3282} 3283 3284/** 3285 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 3286 * @ioa_cfg: ioa config struct 3287 * @ipr_cmd: ipr command struct 3288 * 3289 * Return value: 3290 * 0 on success / -1 on failure 3291 **/ 3292static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 3293 struct ipr_cmnd *ipr_cmd) 3294{ 3295 int i; 3296 struct scatterlist *sglist; 3297 u32 length; 3298 u32 ioadl_flags = 0; 3299 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3300 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3301 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 3302 3303 length = scsi_cmd->request_bufflen; 3304 3305 if (length == 0) 3306 return 0; 3307 3308 if (scsi_cmd->use_sg) { 3309 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, 3310 scsi_cmd->request_buffer, 3311 scsi_cmd->use_sg, 3312 scsi_cmd->sc_data_direction); 3313 3314 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 3315 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 3316 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3317 ioarcb->write_data_transfer_length = cpu_to_be32(length); 3318 ioarcb->write_ioadl_len = 3319 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 3320 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 3321 ioadl_flags = IPR_IOADL_FLAGS_READ; 3322 ioarcb->read_data_transfer_length = cpu_to_be32(length); 3323 ioarcb->read_ioadl_len = 3324 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 3325 } 3326 3327 sglist = scsi_cmd->request_buffer; 3328 3329 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3330 ioadl[i].flags_and_data_len = 3331 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i])); 3332 ioadl[i].address = 3333 cpu_to_be32(sg_dma_address(&sglist[i])); 3334 } 3335 3336 if (likely(ipr_cmd->dma_use_sg)) { 3337 ioadl[i-1].flags_and_data_len |= 3338 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3339 return 0; 3340 } else 3341 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 3342 } else { 3343 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 3344 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 3345 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3346 ioarcb->write_data_transfer_length = cpu_to_be32(length); 3347 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 3348 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 3349 ioadl_flags = IPR_IOADL_FLAGS_READ; 3350 ioarcb->read_data_transfer_length = cpu_to_be32(length); 3351 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 3352 } 3353 3354 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev, 3355 scsi_cmd->request_buffer, length, 3356 scsi_cmd->sc_data_direction); 3357 3358 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) { 3359 ipr_cmd->dma_use_sg = 1; 3360 ioadl[0].flags_and_data_len = 3361 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST); 3362 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle); 3363 return 0; 3364 } else 3365 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n"); 3366 } 3367 3368 return -1; 3369} 3370 3371/** 3372 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes 3373 * @scsi_cmd: scsi command struct 3374 * 3375 * Return value: 3376 * task attributes 3377 **/ 3378static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) 3379{ 3380 u8 tag[2]; 3381 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; 3382 3383 if (scsi_populate_tag_msg(scsi_cmd, tag)) { 3384 switch (tag[0]) { 3385 case MSG_SIMPLE_TAG: 3386 rc = IPR_FLAGS_LO_SIMPLE_TASK; 3387 break; 3388 case MSG_HEAD_TAG: 3389 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; 3390 break; 3391 case MSG_ORDERED_TAG: 3392 rc = IPR_FLAGS_LO_ORDERED_TASK; 3393 break; 3394 }; 3395 } 3396 3397 return rc; 3398} 3399 3400/** 3401 * ipr_erp_done - Process completion of ERP for a device 3402 * @ipr_cmd: ipr command struct 3403 * 3404 * This function copies the sense buffer into the scsi_cmd 3405 * struct and pushes the scsi_done function. 3406 * 3407 * Return value: 3408 * nothing 3409 **/ 3410static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 3411{ 3412 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3413 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 3414 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3415 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3416 3417 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 3418 scsi_cmd->result |= (DID_ERROR << 16); 3419 ipr_sdev_err(scsi_cmd->device, 3420 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 3421 } else { 3422 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 3423 SCSI_SENSE_BUFFERSIZE); 3424 } 3425 3426 if (res) { 3427 res->needs_sync_complete = 1; 3428 res->in_erp = 0; 3429 } 3430 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 3431 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3432 scsi_cmd->scsi_done(scsi_cmd); 3433} 3434 3435/** 3436 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 3437 * @ipr_cmd: ipr command struct 3438 * 3439 * Return value: 3440 * none 3441 **/ 3442static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 3443{ 3444 struct ipr_ioarcb *ioarcb; 3445 struct ipr_ioasa *ioasa; 3446 3447 ioarcb = &ipr_cmd->ioarcb; 3448 ioasa = &ipr_cmd->ioasa; 3449 3450 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 3451 ioarcb->write_data_transfer_length = 0; 3452 ioarcb->read_data_transfer_length = 0; 3453 ioarcb->write_ioadl_len = 0; 3454 ioarcb->read_ioadl_len = 0; 3455 ioasa->ioasc = 0; 3456 ioasa->residual_data_len = 0; 3457} 3458 3459/** 3460 * ipr_erp_request_sense - Send request sense to a device 3461 * @ipr_cmd: ipr command struct 3462 * 3463 * This function sends a request sense to a device as a result 3464 * of a check condition. 3465 * 3466 * Return value: 3467 * nothing 3468 **/ 3469static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 3470{ 3471 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 3472 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3473 3474 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 3475 ipr_erp_done(ipr_cmd); 3476 return; 3477 } 3478 3479 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 3480 3481 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 3482 cmd_pkt->cdb[0] = REQUEST_SENSE; 3483 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 3484 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 3485 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 3486 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 3487 3488 ipr_cmd->ioadl[0].flags_and_data_len = 3489 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE); 3490 ipr_cmd->ioadl[0].address = 3491 cpu_to_be32(ipr_cmd->sense_buffer_dma); 3492 3493 ipr_cmd->ioarcb.read_ioadl_len = 3494 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 3495 ipr_cmd->ioarcb.read_data_transfer_length = 3496 cpu_to_be32(SCSI_SENSE_BUFFERSIZE); 3497 3498 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 3499 IPR_REQUEST_SENSE_TIMEOUT * 2); 3500} 3501 3502/** 3503 * ipr_erp_cancel_all - Send cancel all to a device 3504 * @ipr_cmd: ipr command struct 3505 * 3506 * This function sends a cancel all to a device to clear the 3507 * queue. If we are running TCQ on the device, QERR is set to 1, 3508 * which means all outstanding ops have been dropped on the floor. 3509 * Cancel all will return them to us. 3510 * 3511 * Return value: 3512 * nothing 3513 **/ 3514static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 3515{ 3516 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3517 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 3518 struct ipr_cmd_pkt *cmd_pkt; 3519 3520 res->in_erp = 1; 3521 3522 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 3523 3524 if (!scsi_get_tag_type(scsi_cmd->device)) { 3525 ipr_erp_request_sense(ipr_cmd); 3526 return; 3527 } 3528 3529 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 3530 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3531 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 3532 3533 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 3534 IPR_CANCEL_ALL_TIMEOUT); 3535} 3536 3537/** 3538 * ipr_dump_ioasa - Dump contents of IOASA 3539 * @ioa_cfg: ioa config struct 3540 * @ipr_cmd: ipr command struct 3541 * 3542 * This function is invoked by the interrupt handler when ops 3543 * fail. It will log the IOASA if appropriate. Only called 3544 * for GPDD ops. 3545 * 3546 * Return value: 3547 * none 3548 **/ 3549static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 3550 struct ipr_cmnd *ipr_cmd) 3551{ 3552 int i; 3553 u16 data_len; 3554 u32 ioasc; 3555 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 3556 __be32 *ioasa_data = (__be32 *)ioasa; 3557 int error_index; 3558 3559 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK; 3560 3561 if (0 == ioasc) 3562 return; 3563 3564 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 3565 return; 3566 3567 error_index = ipr_get_error(ioasc); 3568 3569 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 3570 /* Don't log an error if the IOA already logged one */ 3571 if (ioasa->ilid != 0) 3572 return; 3573 3574 if (ipr_error_table[error_index].log_ioasa == 0) 3575 return; 3576 } 3577 3578 ipr_sdev_err(ipr_cmd->scsi_cmd->device, "%s\n", 3579 ipr_error_table[error_index].error); 3580 3581 if ((ioasa->u.gpdd.end_state <= ARRAY_SIZE(ipr_gpdd_dev_end_states)) && 3582 (ioasa->u.gpdd.bus_phase <= ARRAY_SIZE(ipr_gpdd_dev_bus_phases))) { 3583 ipr_sdev_err(ipr_cmd->scsi_cmd->device, 3584 "Device End state: %s Phase: %s\n", 3585 ipr_gpdd_dev_end_states[ioasa->u.gpdd.end_state], 3586 ipr_gpdd_dev_bus_phases[ioasa->u.gpdd.bus_phase]); 3587 } 3588 3589 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len)) 3590 data_len = sizeof(struct ipr_ioasa); 3591 else 3592 data_len = be16_to_cpu(ioasa->ret_stat_len); 3593 3594 ipr_err("IOASA Dump:\n"); 3595 3596 for (i = 0; i < data_len / 4; i += 4) { 3597 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 3598 be32_to_cpu(ioasa_data[i]), 3599 be32_to_cpu(ioasa_data[i+1]), 3600 be32_to_cpu(ioasa_data[i+2]), 3601 be32_to_cpu(ioasa_data[i+3])); 3602 } 3603} 3604 3605/** 3606 * ipr_gen_sense - Generate SCSI sense data from an IOASA 3607 * @ioasa: IOASA 3608 * @sense_buf: sense data buffer 3609 * 3610 * Return value: 3611 * none 3612 **/ 3613static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 3614{ 3615 u32 failing_lba; 3616 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 3617 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 3618 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 3619 u32 ioasc = be32_to_cpu(ioasa->ioasc); 3620 3621 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 3622 3623 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 3624 return; 3625 3626 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 3627 3628 if (ipr_is_vset_device(res) && 3629 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 3630 ioasa->u.vset.failing_lba_hi != 0) { 3631 sense_buf[0] = 0x72; 3632 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 3633 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 3634 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 3635 3636 sense_buf[7] = 12; 3637 sense_buf[8] = 0; 3638 sense_buf[9] = 0x0A; 3639 sense_buf[10] = 0x80; 3640 3641 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 3642 3643 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 3644 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 3645 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 3646 sense_buf[15] = failing_lba & 0x000000ff; 3647 3648 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 3649 3650 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 3651 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 3652 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 3653 sense_buf[19] = failing_lba & 0x000000ff; 3654 } else { 3655 sense_buf[0] = 0x70; 3656 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 3657 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 3658 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 3659 3660 /* Illegal request */ 3661 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 3662 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 3663 sense_buf[7] = 10; /* additional length */ 3664 3665 /* IOARCB was in error */ 3666 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 3667 sense_buf[15] = 0xC0; 3668 else /* Parameter data was invalid */ 3669 sense_buf[15] = 0x80; 3670 3671 sense_buf[16] = 3672 ((IPR_FIELD_POINTER_MASK & 3673 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff; 3674 sense_buf[17] = 3675 (IPR_FIELD_POINTER_MASK & 3676 be32_to_cpu(ioasa->ioasc_specific)) & 0xff; 3677 } else { 3678 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 3679 if (ipr_is_vset_device(res)) 3680 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 3681 else 3682 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 3683 3684 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 3685 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 3686 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 3687 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 3688 sense_buf[6] = failing_lba & 0x000000ff; 3689 } 3690 3691 sense_buf[7] = 6; /* additional length */ 3692 } 3693 } 3694} 3695 3696/** 3697 * ipr_erp_start - Process an error response for a SCSI op 3698 * @ioa_cfg: ioa config struct 3699 * @ipr_cmd: ipr command struct 3700 * 3701 * This function determines whether or not to initiate ERP 3702 * on the affected device. 3703 * 3704 * Return value: 3705 * nothing 3706 **/ 3707static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 3708 struct ipr_cmnd *ipr_cmd) 3709{ 3710 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3711 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 3712 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3713 3714 if (!res) { 3715 ipr_scsi_eh_done(ipr_cmd); 3716 return; 3717 } 3718 3719 if (ipr_is_gscsi(res)) 3720 ipr_dump_ioasa(ioa_cfg, ipr_cmd); 3721 else 3722 ipr_gen_sense(ipr_cmd); 3723 3724 switch (ioasc & IPR_IOASC_IOASC_MASK) { 3725 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 3726 scsi_cmd->result |= (DID_IMM_RETRY << 16); 3727 break; 3728 case IPR_IOASC_IR_RESOURCE_HANDLE: 3729 scsi_cmd->result |= (DID_NO_CONNECT << 16); 3730 break; 3731 case IPR_IOASC_HW_SEL_TIMEOUT: 3732 scsi_cmd->result |= (DID_NO_CONNECT << 16); 3733 res->needs_sync_complete = 1; 3734 break; 3735 case IPR_IOASC_SYNC_REQUIRED: 3736 if (!res->in_erp) 3737 res->needs_sync_complete = 1; 3738 scsi_cmd->result |= (DID_IMM_RETRY << 16); 3739 break; 3740 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 3741 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 3742 break; 3743 case IPR_IOASC_BUS_WAS_RESET: 3744 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 3745 /* 3746 * Report the bus reset and ask for a retry. The device 3747 * will give CC/UA the next command. 3748 */ 3749 if (!res->resetting_device) 3750 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 3751 scsi_cmd->result |= (DID_ERROR << 16); 3752 res->needs_sync_complete = 1; 3753 break; 3754 case IPR_IOASC_HW_DEV_BUS_STATUS: 3755 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 3756 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 3757 ipr_erp_cancel_all(ipr_cmd); 3758 return; 3759 } 3760 res->needs_sync_complete = 1; 3761 break; 3762 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 3763 break; 3764 default: 3765 scsi_cmd->result |= (DID_ERROR << 16); 3766 if (!ipr_is_vset_device(res)) 3767 res->needs_sync_complete = 1; 3768 break; 3769 } 3770 3771 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 3772 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3773 scsi_cmd->scsi_done(scsi_cmd); 3774} 3775 3776/** 3777 * ipr_scsi_done - mid-layer done function 3778 * @ipr_cmd: ipr command struct 3779 * 3780 * This function is invoked by the interrupt handler for 3781 * ops generated by the SCSI mid-layer 3782 * 3783 * Return value: 3784 * none 3785 **/ 3786static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 3787{ 3788 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3789 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3790 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3791 3792 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len); 3793 3794 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 3795 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 3796 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3797 scsi_cmd->scsi_done(scsi_cmd); 3798 } else 3799 ipr_erp_start(ioa_cfg, ipr_cmd); 3800} 3801 3802/** 3803 * ipr_save_ioafp_mode_select - Save adapters mode select data 3804 * @ioa_cfg: ioa config struct 3805 * @scsi_cmd: scsi command struct 3806 * 3807 * This function saves mode select data for the adapter to 3808 * use following an adapter reset. 3809 * 3810 * Return value: 3811 * 0 on success / SCSI_MLQUEUE_HOST_BUSY on failure 3812 **/ 3813static int ipr_save_ioafp_mode_select(struct ipr_ioa_cfg *ioa_cfg, 3814 struct scsi_cmnd *scsi_cmd) 3815{ 3816 if (!ioa_cfg->saved_mode_pages) { 3817 ioa_cfg->saved_mode_pages = kmalloc(sizeof(struct ipr_mode_pages), 3818 GFP_ATOMIC); 3819 if (!ioa_cfg->saved_mode_pages) { 3820 dev_err(&ioa_cfg->pdev->dev, 3821 "IOA mode select buffer allocation failed\n"); 3822 return SCSI_MLQUEUE_HOST_BUSY; 3823 } 3824 } 3825 3826 memcpy(ioa_cfg->saved_mode_pages, scsi_cmd->buffer, scsi_cmd->cmnd[4]); 3827 ioa_cfg->saved_mode_page_len = scsi_cmd->cmnd[4]; 3828 return 0; 3829} 3830 3831/** 3832 * ipr_queuecommand - Queue a mid-layer request 3833 * @scsi_cmd: scsi command struct 3834 * @done: done function 3835 * 3836 * This function queues a request generated by the mid-layer. 3837 * 3838 * Return value: 3839 * 0 on success 3840 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 3841 * SCSI_MLQUEUE_HOST_BUSY if host is busy 3842 **/ 3843static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, 3844 void (*done) (struct scsi_cmnd *)) 3845{ 3846 struct ipr_ioa_cfg *ioa_cfg; 3847 struct ipr_resource_entry *res; 3848 struct ipr_ioarcb *ioarcb; 3849 struct ipr_cmnd *ipr_cmd; 3850 int rc = 0; 3851 3852 scsi_cmd->scsi_done = done; 3853 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 3854 res = scsi_cmd->device->hostdata; 3855 scsi_cmd->result = (DID_OK << 16); 3856 3857 /* 3858 * We are currently blocking all devices due to a host reset 3859 * We have told the host to stop giving us new requests, but 3860 * ERP ops don't count. FIXME 3861 */ 3862 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) 3863 return SCSI_MLQUEUE_HOST_BUSY; 3864 3865 /* 3866 * FIXME - Create scsi_set_host_offline interface 3867 * and the ioa_is_dead check can be removed 3868 */ 3869 if (unlikely(ioa_cfg->ioa_is_dead || !res)) { 3870 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 3871 scsi_cmd->result = (DID_NO_CONNECT << 16); 3872 scsi_cmd->scsi_done(scsi_cmd); 3873 return 0; 3874 } 3875 3876 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3877 ioarcb = &ipr_cmd->ioarcb; 3878 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 3879 3880 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 3881 ipr_cmd->scsi_cmd = scsi_cmd; 3882 ioarcb->res_handle = res->cfgte.res_handle; 3883 ipr_cmd->done = ipr_scsi_done; 3884 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 3885 3886 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 3887 if (scsi_cmd->underflow == 0) 3888 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 3889 3890 if (res->needs_sync_complete) { 3891 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 3892 res->needs_sync_complete = 0; 3893 } 3894 3895 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 3896 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 3897 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 3898 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); 3899 } 3900 3901 if (scsi_cmd->cmnd[0] >= 0xC0 && 3902 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) 3903 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 3904 3905 if (ipr_is_ioa_resource(res) && scsi_cmd->cmnd[0] == MODE_SELECT) 3906 rc = ipr_save_ioafp_mode_select(ioa_cfg, scsi_cmd); 3907 3908 if (likely(rc == 0)) 3909 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 3910 3911 if (likely(rc == 0)) { 3912 mb(); 3913 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 3914 ioa_cfg->regs.ioarrin_reg); 3915 } else { 3916 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3917 return SCSI_MLQUEUE_HOST_BUSY; 3918 } 3919 3920 return 0; 3921} 3922 3923/** 3924 * ipr_info - Get information about the card/driver 3925 * @scsi_host: scsi host struct 3926 * 3927 * Return value: 3928 * pointer to buffer with description string 3929 **/ 3930static const char * ipr_ioa_info(struct Scsi_Host *host) 3931{ 3932 static char buffer[512]; 3933 struct ipr_ioa_cfg *ioa_cfg; 3934 unsigned long lock_flags = 0; 3935 3936 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 3937 3938 spin_lock_irqsave(host->host_lock, lock_flags); 3939 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 3940 spin_unlock_irqrestore(host->host_lock, lock_flags); 3941 3942 return buffer; 3943} 3944 3945static struct scsi_host_template driver_template = { 3946 .module = THIS_MODULE, 3947 .name = "IPR", 3948 .info = ipr_ioa_info, 3949 .queuecommand = ipr_queuecommand, 3950 .eh_abort_handler = ipr_eh_abort, 3951 .eh_device_reset_handler = ipr_eh_dev_reset, 3952 .eh_host_reset_handler = ipr_eh_host_reset, 3953 .slave_alloc = ipr_slave_alloc, 3954 .slave_configure = ipr_slave_configure, 3955 .slave_destroy = ipr_slave_destroy, 3956 .change_queue_depth = ipr_change_queue_depth, 3957 .change_queue_type = ipr_change_queue_type, 3958 .bios_param = ipr_biosparam, 3959 .can_queue = IPR_MAX_COMMANDS, 3960 .this_id = -1, 3961 .sg_tablesize = IPR_MAX_SGLIST, 3962 .max_sectors = IPR_IOA_MAX_SECTORS, 3963 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 3964 .use_clustering = ENABLE_CLUSTERING, 3965 .shost_attrs = ipr_ioa_attrs, 3966 .sdev_attrs = ipr_dev_attrs, 3967 .proc_name = IPR_NAME 3968}; 3969 3970#ifdef CONFIG_PPC_PSERIES 3971static const u16 ipr_blocked_processors[] = { 3972 PV_NORTHSTAR, 3973 PV_PULSAR, 3974 PV_POWER4, 3975 PV_ICESTAR, 3976 PV_SSTAR, 3977 PV_POWER4p, 3978 PV_630, 3979 PV_630p 3980}; 3981 3982/** 3983 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 3984 * @ioa_cfg: ioa cfg struct 3985 * 3986 * Adapters that use Gemstone revision < 3.1 do not work reliably on 3987 * certain pSeries hardware. This function determines if the given 3988 * adapter is in one of these confgurations or not. 3989 * 3990 * Return value: 3991 * 1 if adapter is not supported / 0 if adapter is supported 3992 **/ 3993static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 3994{ 3995 u8 rev_id; 3996 int i; 3997 3998 if (ioa_cfg->type == 0x5702) { 3999 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID, 4000 &rev_id) == PCIBIOS_SUCCESSFUL) { 4001 if (rev_id < 4) { 4002 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ 4003 if (__is_processor(ipr_blocked_processors[i])) 4004 return 1; 4005 } 4006 } 4007 } 4008 } 4009 return 0; 4010} 4011#else 4012#define ipr_invalid_adapter(ioa_cfg) 0 4013#endif 4014 4015/** 4016 * ipr_ioa_bringdown_done - IOA bring down completion. 4017 * @ipr_cmd: ipr command struct 4018 * 4019 * This function processes the completion of an adapter bring down. 4020 * It wakes any reset sleepers. 4021 * 4022 * Return value: 4023 * IPR_RC_JOB_RETURN 4024 **/ 4025static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 4026{ 4027 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4028 4029 ENTER; 4030 ioa_cfg->in_reset_reload = 0; 4031 ioa_cfg->reset_retries = 0; 4032 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4033 wake_up_all(&ioa_cfg->reset_wait_q); 4034 4035 spin_unlock_irq(ioa_cfg->host->host_lock); 4036 scsi_unblock_requests(ioa_cfg->host); 4037 spin_lock_irq(ioa_cfg->host->host_lock); 4038 LEAVE; 4039 4040 return IPR_RC_JOB_RETURN; 4041} 4042 4043/** 4044 * ipr_ioa_reset_done - IOA reset completion. 4045 * @ipr_cmd: ipr command struct 4046 * 4047 * This function processes the completion of an adapter reset. 4048 * It schedules any necessary mid-layer add/removes and 4049 * wakes any reset sleepers. 4050 * 4051 * Return value: 4052 * IPR_RC_JOB_RETURN 4053 **/ 4054static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 4055{ 4056 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4057 struct ipr_resource_entry *res; 4058 struct ipr_hostrcb *hostrcb, *temp; 4059 int i = 0; 4060 4061 ENTER; 4062 ioa_cfg->in_reset_reload = 0; 4063 ioa_cfg->allow_cmds = 1; 4064 ioa_cfg->reset_cmd = NULL; 4065 4066 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4067 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { 4068 ipr_trace; 4069 break; 4070 } 4071 } 4072 schedule_work(&ioa_cfg->work_q); 4073 4074 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { 4075 list_del(&hostrcb->queue); 4076 if (i++ < IPR_NUM_LOG_HCAMS) 4077 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 4078 else 4079 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 4080 } 4081 4082 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 4083 4084 ioa_cfg->reset_retries = 0; 4085 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4086 wake_up_all(&ioa_cfg->reset_wait_q); 4087 4088 spin_unlock_irq(ioa_cfg->host->host_lock); 4089 scsi_unblock_requests(ioa_cfg->host); 4090 spin_lock_irq(ioa_cfg->host->host_lock); 4091 4092 if (!ioa_cfg->allow_cmds) 4093 scsi_block_requests(ioa_cfg->host); 4094 4095 LEAVE; 4096 return IPR_RC_JOB_RETURN; 4097} 4098 4099/** 4100 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 4101 * @supported_dev: supported device struct 4102 * @vpids: vendor product id struct 4103 * 4104 * Return value: 4105 * none 4106 **/ 4107static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 4108 struct ipr_std_inq_vpids *vpids) 4109{ 4110 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 4111 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 4112 supported_dev->num_records = 1; 4113 supported_dev->data_length = 4114 cpu_to_be16(sizeof(struct ipr_supported_device)); 4115 supported_dev->reserved = 0; 4116} 4117 4118/** 4119 * ipr_set_supported_devs - Send Set Supported Devices for a device 4120 * @ipr_cmd: ipr command struct 4121 * 4122 * This function send a Set Supported Devices to the adapter 4123 * 4124 * Return value: 4125 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 4126 **/ 4127static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 4128{ 4129 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4130 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 4131 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4132 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4133 struct ipr_resource_entry *res = ipr_cmd->u.res; 4134 4135 ipr_cmd->job_step = ipr_ioa_reset_done; 4136 4137 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 4138 if (!ipr_is_af_dasd_device(res)) 4139 continue; 4140 4141 ipr_cmd->u.res = res; 4142 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids); 4143 4144 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 4145 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4146 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4147 4148 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 4149 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 4150 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 4151 4152 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | 4153 sizeof(struct ipr_supported_device)); 4154 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma + 4155 offsetof(struct ipr_misc_cbs, supp_dev)); 4156 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4157 ioarcb->write_data_transfer_length = 4158 cpu_to_be32(sizeof(struct ipr_supported_device)); 4159 4160 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 4161 IPR_SET_SUP_DEVICE_TIMEOUT); 4162 4163 ipr_cmd->job_step = ipr_set_supported_devs; 4164 return IPR_RC_JOB_RETURN; 4165 } 4166 4167 return IPR_RC_JOB_CONTINUE; 4168} 4169 4170/** 4171 * ipr_get_mode_page - Locate specified mode page 4172 * @mode_pages: mode page buffer 4173 * @page_code: page code to find 4174 * @len: minimum required length for mode page 4175 * 4176 * Return value: 4177 * pointer to mode page / NULL on failure 4178 **/ 4179static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 4180 u32 page_code, u32 len) 4181{ 4182 struct ipr_mode_page_hdr *mode_hdr; 4183 u32 page_length; 4184 u32 length; 4185 4186 if (!mode_pages || (mode_pages->hdr.length == 0)) 4187 return NULL; 4188 4189 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 4190 mode_hdr = (struct ipr_mode_page_hdr *) 4191 (mode_pages->data + mode_pages->hdr.block_desc_len); 4192 4193 while (length) { 4194 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 4195 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 4196 return mode_hdr; 4197 break; 4198 } else { 4199 page_length = (sizeof(struct ipr_mode_page_hdr) + 4200 mode_hdr->page_length); 4201 length -= page_length; 4202 mode_hdr = (struct ipr_mode_page_hdr *) 4203 ((unsigned long)mode_hdr + page_length); 4204 } 4205 } 4206 return NULL; 4207} 4208 4209/** 4210 * ipr_check_term_power - Check for term power errors 4211 * @ioa_cfg: ioa config struct 4212 * @mode_pages: IOAFP mode pages buffer 4213 * 4214 * Check the IOAFP's mode page 28 for term power errors 4215 * 4216 * Return value: 4217 * nothing 4218 **/ 4219static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 4220 struct ipr_mode_pages *mode_pages) 4221{ 4222 int i; 4223 int entry_length; 4224 struct ipr_dev_bus_entry *bus; 4225 struct ipr_mode_page28 *mode_page; 4226 4227 mode_page = ipr_get_mode_page(mode_pages, 0x28, 4228 sizeof(struct ipr_mode_page28)); 4229 4230 entry_length = mode_page->entry_length; 4231 4232 bus = mode_page->bus; 4233 4234 for (i = 0; i < mode_page->num_entries; i++) { 4235 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 4236 dev_err(&ioa_cfg->pdev->dev, 4237 "Term power is absent on scsi bus %d\n", 4238 bus->res_addr.bus); 4239 } 4240 4241 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 4242 } 4243} 4244 4245/** 4246 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 4247 * @ioa_cfg: ioa config struct 4248 * 4249 * Looks through the config table checking for SES devices. If 4250 * the SES device is in the SES table indicating a maximum SCSI 4251 * bus speed, the speed is limited for the bus. 4252 * 4253 * Return value: 4254 * none 4255 **/ 4256static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 4257{ 4258 u32 max_xfer_rate; 4259 int i; 4260 4261 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 4262 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 4263 ioa_cfg->bus_attr[i].bus_width); 4264 4265 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 4266 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 4267 } 4268} 4269 4270/** 4271 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 4272 * @ioa_cfg: ioa config struct 4273 * @mode_pages: mode page 28 buffer 4274 * 4275 * Updates mode page 28 based on driver configuration 4276 * 4277 * Return value: 4278 * none 4279 **/ 4280static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 4281 struct ipr_mode_pages *mode_pages) 4282{ 4283 int i, entry_length; 4284 struct ipr_dev_bus_entry *bus; 4285 struct ipr_bus_attributes *bus_attr; 4286 struct ipr_mode_page28 *mode_page; 4287 4288 mode_page = ipr_get_mode_page(mode_pages, 0x28, 4289 sizeof(struct ipr_mode_page28)); 4290 4291 entry_length = mode_page->entry_length; 4292 4293 /* Loop for each device bus entry */ 4294 for (i = 0, bus = mode_page->bus; 4295 i < mode_page->num_entries; 4296 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 4297 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 4298 dev_err(&ioa_cfg->pdev->dev, 4299 "Invalid resource address reported: 0x%08X\n", 4300 IPR_GET_PHYS_LOC(bus->res_addr)); 4301 continue; 4302 } 4303 4304 bus_attr = &ioa_cfg->bus_attr[i]; 4305 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 4306 bus->bus_width = bus_attr->bus_width; 4307 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 4308 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 4309 if (bus_attr->qas_enabled) 4310 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 4311 else 4312 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 4313 } 4314} 4315 4316/** 4317 * ipr_build_mode_select - Build a mode select command 4318 * @ipr_cmd: ipr command struct 4319 * @res_handle: resource handle to send command to 4320 * @parm: Byte 2 of Mode Sense command 4321 * @dma_addr: DMA buffer address 4322 * @xfer_len: data transfer length 4323 * 4324 * Return value: 4325 * none 4326 **/ 4327static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 4328 __be32 res_handle, u8 parm, u32 dma_addr, 4329 u8 xfer_len) 4330{ 4331 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4332 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4333 4334 ioarcb->res_handle = res_handle; 4335 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 4336 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4337 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 4338 ioarcb->cmd_pkt.cdb[1] = parm; 4339 ioarcb->cmd_pkt.cdb[4] = xfer_len; 4340 4341 ioadl->flags_and_data_len = 4342 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len); 4343 ioadl->address = cpu_to_be32(dma_addr); 4344 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4345 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len); 4346} 4347 4348/** 4349 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 4350 * @ipr_cmd: ipr command struct 4351 * 4352 * This function sets up the SCSI bus attributes and sends 4353 * a Mode Select for Page 28 to activate them. 4354 * 4355 * Return value: 4356 * IPR_RC_JOB_RETURN 4357 **/ 4358static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 4359{ 4360 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4361 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 4362 int length; 4363 4364 ENTER; 4365 if (ioa_cfg->saved_mode_pages) { 4366 memcpy(mode_pages, ioa_cfg->saved_mode_pages, 4367 ioa_cfg->saved_mode_page_len); 4368 length = ioa_cfg->saved_mode_page_len; 4369 } else { 4370 ipr_scsi_bus_speed_limit(ioa_cfg); 4371 ipr_check_term_power(ioa_cfg, mode_pages); 4372 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 4373 length = mode_pages->hdr.length + 1; 4374 mode_pages->hdr.length = 0; 4375 } 4376 4377 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 4378 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 4379 length); 4380 4381 ipr_cmd->job_step = ipr_set_supported_devs; 4382 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 4383 struct ipr_resource_entry, queue); 4384 4385 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4386 4387 LEAVE; 4388 return IPR_RC_JOB_RETURN; 4389} 4390 4391/** 4392 * ipr_build_mode_sense - Builds a mode sense command 4393 * @ipr_cmd: ipr command struct 4394 * @res: resource entry struct 4395 * @parm: Byte 2 of mode sense command 4396 * @dma_addr: DMA address of mode sense buffer 4397 * @xfer_len: Size of DMA buffer 4398 * 4399 * Return value: 4400 * none 4401 **/ 4402static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 4403 __be32 res_handle, 4404 u8 parm, u32 dma_addr, u8 xfer_len) 4405{ 4406 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4407 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4408 4409 ioarcb->res_handle = res_handle; 4410 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 4411 ioarcb->cmd_pkt.cdb[2] = parm; 4412 ioarcb->cmd_pkt.cdb[4] = xfer_len; 4413 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 4414 4415 ioadl->flags_and_data_len = 4416 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 4417 ioadl->address = cpu_to_be32(dma_addr); 4418 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4419 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 4420} 4421 4422/** 4423 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 4424 * @ipr_cmd: ipr command struct 4425 * 4426 * This function send a Page 28 mode sense to the IOA to 4427 * retrieve SCSI bus attributes. 4428 * 4429 * Return value: 4430 * IPR_RC_JOB_RETURN 4431 **/ 4432static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 4433{ 4434 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4435 4436 ENTER; 4437 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 4438 0x28, ioa_cfg->vpd_cbs_dma + 4439 offsetof(struct ipr_misc_cbs, mode_pages), 4440 sizeof(struct ipr_mode_pages)); 4441 4442 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 4443 4444 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4445 4446 LEAVE; 4447 return IPR_RC_JOB_RETURN; 4448} 4449 4450/** 4451 * ipr_init_res_table - Initialize the resource table 4452 * @ipr_cmd: ipr command struct 4453 * 4454 * This function looks through the existing resource table, comparing 4455 * it with the config table. This function will take care of old/new 4456 * devices and schedule adding/removing them from the mid-layer 4457 * as appropriate. 4458 * 4459 * Return value: 4460 * IPR_RC_JOB_CONTINUE 4461 **/ 4462static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 4463{ 4464 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4465 struct ipr_resource_entry *res, *temp; 4466 struct ipr_config_table_entry *cfgte; 4467 int found, i; 4468 LIST_HEAD(old_res); 4469 4470 ENTER; 4471 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ) 4472 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 4473 4474 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 4475 list_move_tail(&res->queue, &old_res); 4476 4477 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) { 4478 cfgte = &ioa_cfg->cfg_table->dev[i]; 4479 found = 0; 4480 4481 list_for_each_entry_safe(res, temp, &old_res, queue) { 4482 if (!memcmp(&res->cfgte.res_addr, 4483 &cfgte->res_addr, sizeof(cfgte->res_addr))) { 4484 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 4485 found = 1; 4486 break; 4487 } 4488 } 4489 4490 if (!found) { 4491 if (list_empty(&ioa_cfg->free_res_q)) { 4492 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 4493 break; 4494 } 4495 4496 found = 1; 4497 res = list_entry(ioa_cfg->free_res_q.next, 4498 struct ipr_resource_entry, queue); 4499 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 4500 ipr_init_res_entry(res); 4501 res->add_to_ml = 1; 4502 } 4503 4504 if (found) 4505 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 4506 } 4507 4508 list_for_each_entry_safe(res, temp, &old_res, queue) { 4509 if (res->sdev) { 4510 res->del_from_ml = 1; 4511 res->sdev->hostdata = NULL; 4512 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 4513 } else { 4514 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 4515 } 4516 } 4517 4518 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 4519 4520 LEAVE; 4521 return IPR_RC_JOB_CONTINUE; 4522} 4523 4524/** 4525 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 4526 * @ipr_cmd: ipr command struct 4527 * 4528 * This function sends a Query IOA Configuration command 4529 * to the adapter to retrieve the IOA configuration table. 4530 * 4531 * Return value: 4532 * IPR_RC_JOB_RETURN 4533 **/ 4534static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 4535{ 4536 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4537 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4538 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4539 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 4540 4541 ENTER; 4542 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 4543 ucode_vpd->major_release, ucode_vpd->card_type, 4544 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 4545 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4546 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 4547 4548 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 4549 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff; 4550 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff; 4551 4552 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4553 ioarcb->read_data_transfer_length = 4554 cpu_to_be32(sizeof(struct ipr_config_table)); 4555 4556 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma); 4557 ioadl->flags_and_data_len = 4558 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table)); 4559 4560 ipr_cmd->job_step = ipr_init_res_table; 4561 4562 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4563 4564 LEAVE; 4565 return IPR_RC_JOB_RETURN; 4566} 4567 4568/** 4569 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 4570 * @ipr_cmd: ipr command struct 4571 * 4572 * This utility function sends an inquiry to the adapter. 4573 * 4574 * Return value: 4575 * none 4576 **/ 4577static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 4578 u32 dma_addr, u8 xfer_len) 4579{ 4580 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4581 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4582 4583 ENTER; 4584 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 4585 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 4586 4587 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 4588 ioarcb->cmd_pkt.cdb[1] = flags; 4589 ioarcb->cmd_pkt.cdb[2] = page; 4590 ioarcb->cmd_pkt.cdb[4] = xfer_len; 4591 4592 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4593 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 4594 4595 ioadl->address = cpu_to_be32(dma_addr); 4596 ioadl->flags_and_data_len = 4597 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 4598 4599 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4600 LEAVE; 4601} 4602 4603/** 4604 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 4605 * @ipr_cmd: ipr command struct 4606 * 4607 * This function sends a Page 3 inquiry to the adapter 4608 * to retrieve software VPD information. 4609 * 4610 * Return value: 4611 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 4612 **/ 4613static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 4614{ 4615 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4616 char type[5]; 4617 4618 ENTER; 4619 4620 /* Grab the type out of the VPD and store it away */ 4621 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 4622 type[4] = '\0'; 4623 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 4624 4625 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 4626 4627 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 4628 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 4629 sizeof(struct ipr_inquiry_page3)); 4630 4631 LEAVE; 4632 return IPR_RC_JOB_RETURN; 4633} 4634 4635/** 4636 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 4637 * @ipr_cmd: ipr command struct 4638 * 4639 * This function sends a standard inquiry to the adapter. 4640 * 4641 * Return value: 4642 * IPR_RC_JOB_RETURN 4643 **/ 4644static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 4645{ 4646 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4647 4648 ENTER; 4649 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 4650 4651 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 4652 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 4653 sizeof(struct ipr_ioa_vpd)); 4654 4655 LEAVE; 4656 return IPR_RC_JOB_RETURN; 4657} 4658 4659/** 4660 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ. 4661 * @ipr_cmd: ipr command struct 4662 * 4663 * This function send an Identify Host Request Response Queue 4664 * command to establish the HRRQ with the adapter. 4665 * 4666 * Return value: 4667 * IPR_RC_JOB_RETURN 4668 **/ 4669static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd) 4670{ 4671 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4672 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4673 4674 ENTER; 4675 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 4676 4677 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 4678 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 4679 4680 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4681 ioarcb->cmd_pkt.cdb[2] = 4682 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff; 4683 ioarcb->cmd_pkt.cdb[3] = 4684 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff; 4685 ioarcb->cmd_pkt.cdb[4] = 4686 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff; 4687 ioarcb->cmd_pkt.cdb[5] = 4688 ((u32) ioa_cfg->host_rrq_dma) & 0xff; 4689 ioarcb->cmd_pkt.cdb[7] = 4690 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; 4691 ioarcb->cmd_pkt.cdb[8] = 4692 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; 4693 4694 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 4695 4696 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4697 4698 LEAVE; 4699 return IPR_RC_JOB_RETURN; 4700} 4701 4702/** 4703 * ipr_reset_timer_done - Adapter reset timer function 4704 * @ipr_cmd: ipr command struct 4705 * 4706 * Description: This function is used in adapter reset processing 4707 * for timing events. If the reset_cmd pointer in the IOA 4708 * config struct is not this adapter's we are doing nested 4709 * resets and fail_all_ops will take care of freeing the 4710 * command block. 4711 * 4712 * Return value: 4713 * none 4714 **/ 4715static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 4716{ 4717 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4718 unsigned long lock_flags = 0; 4719 4720 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4721 4722 if (ioa_cfg->reset_cmd == ipr_cmd) { 4723 list_del(&ipr_cmd->queue); 4724 ipr_cmd->done(ipr_cmd); 4725 } 4726 4727 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4728} 4729 4730/** 4731 * ipr_reset_start_timer - Start a timer for adapter reset job 4732 * @ipr_cmd: ipr command struct 4733 * @timeout: timeout value 4734 * 4735 * Description: This function is used in adapter reset processing 4736 * for timing events. If the reset_cmd pointer in the IOA 4737 * config struct is not this adapter's we are doing nested 4738 * resets and fail_all_ops will take care of freeing the 4739 * command block. 4740 * 4741 * Return value: 4742 * none 4743 **/ 4744static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 4745 unsigned long timeout) 4746{ 4747 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 4748 ipr_cmd->done = ipr_reset_ioa_job; 4749 4750 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 4751 ipr_cmd->timer.expires = jiffies + timeout; 4752 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 4753 add_timer(&ipr_cmd->timer); 4754} 4755 4756/** 4757 * ipr_init_ioa_mem - Initialize ioa_cfg control block 4758 * @ioa_cfg: ioa cfg struct 4759 * 4760 * Return value: 4761 * nothing 4762 **/ 4763static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 4764{ 4765 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); 4766 4767 /* Initialize Host RRQ pointers */ 4768 ioa_cfg->hrrq_start = ioa_cfg->host_rrq; 4769 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; 4770 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 4771 ioa_cfg->toggle_bit = 1; 4772 4773 /* Zero out config table */ 4774 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table)); 4775} 4776 4777/** 4778 * ipr_reset_enable_ioa - Enable the IOA following a reset. 4779 * @ipr_cmd: ipr command struct 4780 * 4781 * This function reinitializes some control blocks and 4782 * enables destructive diagnostics on the adapter. 4783 * 4784 * Return value: 4785 * IPR_RC_JOB_RETURN 4786 **/ 4787static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 4788{ 4789 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4790 volatile u32 int_reg; 4791 4792 ENTER; 4793 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq; 4794 ipr_init_ioa_mem(ioa_cfg); 4795 4796 ioa_cfg->allow_interrupts = 1; 4797 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 4798 4799 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 4800 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 4801 ioa_cfg->regs.clr_interrupt_mask_reg); 4802 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 4803 return IPR_RC_JOB_CONTINUE; 4804 } 4805 4806 /* Enable destructive diagnostics on IOA */ 4807 writel(IPR_DOORBELL, ioa_cfg->regs.set_uproc_interrupt_reg); 4808 4809 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg); 4810 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 4811 4812 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 4813 4814 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 4815 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ); 4816 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 4817 ipr_cmd->done = ipr_reset_ioa_job; 4818 add_timer(&ipr_cmd->timer); 4819 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 4820 4821 LEAVE; 4822 return IPR_RC_JOB_RETURN; 4823} 4824 4825/** 4826 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 4827 * @ipr_cmd: ipr command struct 4828 * 4829 * This function is invoked when an adapter dump has run out 4830 * of processing time. 4831 * 4832 * Return value: 4833 * IPR_RC_JOB_CONTINUE 4834 **/ 4835static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 4836{ 4837 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4838 4839 if (ioa_cfg->sdt_state == GET_DUMP) 4840 ioa_cfg->sdt_state = ABORT_DUMP; 4841 4842 ipr_cmd->job_step = ipr_reset_alert; 4843 4844 return IPR_RC_JOB_CONTINUE; 4845} 4846 4847/** 4848 * ipr_unit_check_no_data - Log a unit check/no data error log 4849 * @ioa_cfg: ioa config struct 4850 * 4851 * Logs an error indicating the adapter unit checked, but for some 4852 * reason, we were unable to fetch the unit check buffer. 4853 * 4854 * Return value: 4855 * nothing 4856 **/ 4857static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 4858{ 4859 ioa_cfg->errors_logged++; 4860 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 4861} 4862 4863/** 4864 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 4865 * @ioa_cfg: ioa config struct 4866 * 4867 * Fetches the unit check buffer from the adapter by clocking the data 4868 * through the mailbox register. 4869 * 4870 * Return value: 4871 * nothing 4872 **/ 4873static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 4874{ 4875 unsigned long mailbox; 4876 struct ipr_hostrcb *hostrcb; 4877 struct ipr_uc_sdt sdt; 4878 int rc, length; 4879 4880 mailbox = readl(ioa_cfg->ioa_mailbox); 4881 4882 if (!ipr_sdt_is_fmt2(mailbox)) { 4883 ipr_unit_check_no_data(ioa_cfg); 4884 return; 4885 } 4886 4887 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 4888 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 4889 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 4890 4891 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) || 4892 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) { 4893 ipr_unit_check_no_data(ioa_cfg); 4894 return; 4895 } 4896 4897 /* Find length of the first sdt entry (UC buffer) */ 4898 length = (be32_to_cpu(sdt.entry[0].end_offset) - 4899 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK; 4900 4901 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 4902 struct ipr_hostrcb, queue); 4903 list_del(&hostrcb->queue); 4904 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 4905 4906 rc = ipr_get_ldump_data_section(ioa_cfg, 4907 be32_to_cpu(sdt.entry[0].bar_str_offset), 4908 (__be32 *)&hostrcb->hcam, 4909 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 4910 4911 if (!rc) 4912 ipr_handle_log_data(ioa_cfg, hostrcb); 4913 else 4914 ipr_unit_check_no_data(ioa_cfg); 4915 4916 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 4917} 4918 4919/** 4920 * ipr_reset_restore_cfg_space - Restore PCI config space. 4921 * @ipr_cmd: ipr command struct 4922 * 4923 * Description: This function restores the saved PCI config space of 4924 * the adapter, fails all outstanding ops back to the callers, and 4925 * fetches the dump/unit check if applicable to this reset. 4926 * 4927 * Return value: 4928 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 4929 **/ 4930static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 4931{ 4932 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4933 int rc; 4934 4935 ENTER; 4936 rc = pci_restore_state(ioa_cfg->pdev); 4937 4938 if (rc != PCIBIOS_SUCCESSFUL) { 4939 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 4940 return IPR_RC_JOB_CONTINUE; 4941 } 4942 4943 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 4944 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 4945 return IPR_RC_JOB_CONTINUE; 4946 } 4947 4948 ipr_fail_all_ops(ioa_cfg); 4949 4950 if (ioa_cfg->ioa_unit_checked) { 4951 ioa_cfg->ioa_unit_checked = 0; 4952 ipr_get_unit_check_buffer(ioa_cfg); 4953 ipr_cmd->job_step = ipr_reset_alert; 4954 ipr_reset_start_timer(ipr_cmd, 0); 4955 return IPR_RC_JOB_RETURN; 4956 } 4957 4958 if (ioa_cfg->in_ioa_bringdown) { 4959 ipr_cmd->job_step = ipr_ioa_bringdown_done; 4960 } else { 4961 ipr_cmd->job_step = ipr_reset_enable_ioa; 4962 4963 if (GET_DUMP == ioa_cfg->sdt_state) { 4964 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); 4965 ipr_cmd->job_step = ipr_reset_wait_for_dump; 4966 schedule_work(&ioa_cfg->work_q); 4967 return IPR_RC_JOB_RETURN; 4968 } 4969 } 4970 4971 ENTER; 4972 return IPR_RC_JOB_CONTINUE; 4973} 4974 4975/** 4976 * ipr_reset_start_bist - Run BIST on the adapter. 4977 * @ipr_cmd: ipr command struct 4978 * 4979 * Description: This function runs BIST on the adapter, then delays 2 seconds. 4980 * 4981 * Return value: 4982 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 4983 **/ 4984static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 4985{ 4986 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4987 int rc; 4988 4989 ENTER; 4990 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 4991 4992 if (rc != PCIBIOS_SUCCESSFUL) { 4993 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 4994 rc = IPR_RC_JOB_CONTINUE; 4995 } else { 4996 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 4997 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 4998 rc = IPR_RC_JOB_RETURN; 4999 } 5000 5001 LEAVE; 5002 return rc; 5003} 5004 5005/** 5006 * ipr_reset_allowed - Query whether or not IOA can be reset 5007 * @ioa_cfg: ioa config struct 5008 * 5009 * Return value: 5010 * 0 if reset not allowed / non-zero if reset is allowed 5011 **/ 5012static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 5013{ 5014 volatile u32 temp_reg; 5015 5016 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 5017 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 5018} 5019 5020/** 5021 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 5022 * @ipr_cmd: ipr command struct 5023 * 5024 * Description: This function waits for adapter permission to run BIST, 5025 * then runs BIST. If the adapter does not give permission after a 5026 * reasonable time, we will reset the adapter anyway. The impact of 5027 * resetting the adapter without warning the adapter is the risk of 5028 * losing the persistent error log on the adapter. If the adapter is 5029 * reset while it is writing to the flash on the adapter, the flash 5030 * segment will have bad ECC and be zeroed. 5031 * 5032 * Return value: 5033 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5034 **/ 5035static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 5036{ 5037 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5038 int rc = IPR_RC_JOB_RETURN; 5039 5040 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 5041 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 5042 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 5043 } else { 5044 ipr_cmd->job_step = ipr_reset_start_bist; 5045 rc = IPR_RC_JOB_CONTINUE; 5046 } 5047 5048 return rc; 5049} 5050 5051/** 5052 * ipr_reset_alert_part2 - Alert the adapter of a pending reset 5053 * @ipr_cmd: ipr command struct 5054 * 5055 * Description: This function alerts the adapter that it will be reset. 5056 * If memory space is not currently enabled, proceed directly 5057 * to running BIST on the adapter. The timer must always be started 5058 * so we guarantee we do not run BIST from ipr_isr. 5059 * 5060 * Return value: 5061 * IPR_RC_JOB_RETURN 5062 **/ 5063static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 5064{ 5065 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5066 u16 cmd_reg; 5067 int rc; 5068 5069 ENTER; 5070 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 5071 5072 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 5073 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 5074 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg); 5075 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 5076 } else { 5077 ipr_cmd->job_step = ipr_reset_start_bist; 5078 } 5079 5080 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 5081 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 5082 5083 LEAVE; 5084 return IPR_RC_JOB_RETURN; 5085} 5086 5087/** 5088 * ipr_reset_ucode_download_done - Microcode download completion 5089 * @ipr_cmd: ipr command struct 5090 * 5091 * Description: This function unmaps the microcode download buffer. 5092 * 5093 * Return value: 5094 * IPR_RC_JOB_CONTINUE 5095 **/ 5096static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 5097{ 5098 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5099 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 5100 5101 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, 5102 sglist->num_sg, DMA_TO_DEVICE); 5103 5104 ipr_cmd->job_step = ipr_reset_alert; 5105 return IPR_RC_JOB_CONTINUE; 5106} 5107 5108/** 5109 * ipr_reset_ucode_download - Download microcode to the adapter 5110 * @ipr_cmd: ipr command struct 5111 * 5112 * Description: This function checks to see if it there is microcode 5113 * to download to the adapter. If there is, a download is performed. 5114 * 5115 * Return value: 5116 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5117 **/ 5118static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 5119{ 5120 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5121 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 5122 5123 ENTER; 5124 ipr_cmd->job_step = ipr_reset_alert; 5125 5126 if (!sglist) 5127 return IPR_RC_JOB_CONTINUE; 5128 5129 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5130 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5131 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 5132 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 5133 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 5134 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 5135 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 5136 5137 if (ipr_map_ucode_buffer(ipr_cmd, sglist, sglist->buffer_len)) { 5138 dev_err(&ioa_cfg->pdev->dev, 5139 "Failed to map microcode download buffer\n"); 5140 return IPR_RC_JOB_CONTINUE; 5141 } 5142 5143 ipr_cmd->job_step = ipr_reset_ucode_download_done; 5144 5145 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 5146 IPR_WRITE_BUFFER_TIMEOUT); 5147 5148 LEAVE; 5149 return IPR_RC_JOB_RETURN; 5150} 5151 5152/** 5153 * ipr_reset_shutdown_ioa - Shutdown the adapter 5154 * @ipr_cmd: ipr command struct 5155 * 5156 * Description: This function issues an adapter shutdown of the 5157 * specified type to the specified adapter as part of the 5158 * adapter reset job. 5159 * 5160 * Return value: 5161 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5162 **/ 5163static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 5164{ 5165 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5166 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 5167 unsigned long timeout; 5168 int rc = IPR_RC_JOB_CONTINUE; 5169 5170 ENTER; 5171 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { 5172 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5173 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5174 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 5175 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 5176 5177 if (shutdown_type == IPR_SHUTDOWN_ABBREV) 5178 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 5179 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 5180 timeout = IPR_INTERNAL_TIMEOUT; 5181 else 5182 timeout = IPR_SHUTDOWN_TIMEOUT; 5183 5184 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 5185 5186 rc = IPR_RC_JOB_RETURN; 5187 ipr_cmd->job_step = ipr_reset_ucode_download; 5188 } else 5189 ipr_cmd->job_step = ipr_reset_alert; 5190 5191 LEAVE; 5192 return rc; 5193} 5194 5195/** 5196 * ipr_reset_ioa_job - Adapter reset job 5197 * @ipr_cmd: ipr command struct 5198 * 5199 * Description: This function is the job router for the adapter reset job. 5200 * 5201 * Return value: 5202 * none 5203 **/ 5204static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 5205{ 5206 u32 rc, ioasc; 5207 unsigned long scratch = ipr_cmd->u.scratch; 5208 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5209 5210 do { 5211 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5212 5213 if (ioa_cfg->reset_cmd != ipr_cmd) { 5214 /* 5215 * We are doing nested adapter resets and this is 5216 * not the current reset job. 5217 */ 5218 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5219 return; 5220 } 5221 5222 if (IPR_IOASC_SENSE_KEY(ioasc)) { 5223 dev_err(&ioa_cfg->pdev->dev, 5224 "0x%02X failed with IOASC: 0x%08X\n", 5225 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 5226 5227 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5228 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5229 return; 5230 } 5231 5232 ipr_reinit_ipr_cmnd(ipr_cmd); 5233 ipr_cmd->u.scratch = scratch; 5234 rc = ipr_cmd->job_step(ipr_cmd); 5235 } while(rc == IPR_RC_JOB_CONTINUE); 5236} 5237 5238/** 5239 * _ipr_initiate_ioa_reset - Initiate an adapter reset 5240 * @ioa_cfg: ioa config struct 5241 * @job_step: first job step of reset job 5242 * @shutdown_type: shutdown type 5243 * 5244 * Description: This function will initiate the reset of the given adapter 5245 * starting at the selected job step. 5246 * If the caller needs to wait on the completion of the reset, 5247 * the caller must sleep on the reset_wait_q. 5248 * 5249 * Return value: 5250 * none 5251 **/ 5252static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 5253 int (*job_step) (struct ipr_cmnd *), 5254 enum ipr_shutdown_type shutdown_type) 5255{ 5256 struct ipr_cmnd *ipr_cmd; 5257 5258 ioa_cfg->in_reset_reload = 1; 5259 ioa_cfg->allow_cmds = 0; 5260 scsi_block_requests(ioa_cfg->host); 5261 5262 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5263 ioa_cfg->reset_cmd = ipr_cmd; 5264 ipr_cmd->job_step = job_step; 5265 ipr_cmd->u.shutdown_type = shutdown_type; 5266 5267 ipr_reset_ioa_job(ipr_cmd); 5268} 5269 5270/** 5271 * ipr_initiate_ioa_reset - Initiate an adapter reset 5272 * @ioa_cfg: ioa config struct 5273 * @shutdown_type: shutdown type 5274 * 5275 * Description: This function will initiate the reset of the given adapter. 5276 * If the caller needs to wait on the completion of the reset, 5277 * the caller must sleep on the reset_wait_q. 5278 * 5279 * Return value: 5280 * none 5281 **/ 5282static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 5283 enum ipr_shutdown_type shutdown_type) 5284{ 5285 if (ioa_cfg->ioa_is_dead) 5286 return; 5287 5288 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) 5289 ioa_cfg->sdt_state = ABORT_DUMP; 5290 5291 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 5292 dev_err(&ioa_cfg->pdev->dev, 5293 "IOA taken offline - error recovery failed\n"); 5294 5295 ioa_cfg->reset_retries = 0; 5296 ioa_cfg->ioa_is_dead = 1; 5297 5298 if (ioa_cfg->in_ioa_bringdown) { 5299 ioa_cfg->reset_cmd = NULL; 5300 ioa_cfg->in_reset_reload = 0; 5301 ipr_fail_all_ops(ioa_cfg); 5302 wake_up_all(&ioa_cfg->reset_wait_q); 5303 5304 spin_unlock_irq(ioa_cfg->host->host_lock); 5305 scsi_unblock_requests(ioa_cfg->host); 5306 spin_lock_irq(ioa_cfg->host->host_lock); 5307 return; 5308 } else { 5309 ioa_cfg->in_ioa_bringdown = 1; 5310 shutdown_type = IPR_SHUTDOWN_NONE; 5311 } 5312 } 5313 5314 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 5315 shutdown_type); 5316} 5317 5318/** 5319 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 5320 * @ioa_cfg: ioa cfg struct 5321 * 5322 * Description: This is the second phase of adapter intialization 5323 * This function takes care of initilizing the adapter to the point 5324 * where it can accept new commands. 5325 5326 * Return value: 5327 * 0 on sucess / -EIO on failure 5328 **/ 5329static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 5330{ 5331 int rc = 0; 5332 unsigned long host_lock_flags = 0; 5333 5334 ENTER; 5335 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 5336 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 5337 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, IPR_SHUTDOWN_NONE); 5338 5339 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 5340 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5341 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 5342 5343 if (ioa_cfg->ioa_is_dead) { 5344 rc = -EIO; 5345 } else if (ipr_invalid_adapter(ioa_cfg)) { 5346 if (!ipr_testmode) 5347 rc = -EIO; 5348 5349 dev_err(&ioa_cfg->pdev->dev, 5350 "Adapter not supported in this hardware configuration.\n"); 5351 } 5352 5353 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 5354 5355 LEAVE; 5356 return rc; 5357} 5358 5359/** 5360 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 5361 * @ioa_cfg: ioa config struct 5362 * 5363 * Return value: 5364 * none 5365 **/ 5366static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 5367{ 5368 int i; 5369 5370 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 5371 if (ioa_cfg->ipr_cmnd_list[i]) 5372 pci_pool_free(ioa_cfg->ipr_cmd_pool, 5373 ioa_cfg->ipr_cmnd_list[i], 5374 ioa_cfg->ipr_cmnd_list_dma[i]); 5375 5376 ioa_cfg->ipr_cmnd_list[i] = NULL; 5377 } 5378 5379 if (ioa_cfg->ipr_cmd_pool) 5380 pci_pool_destroy (ioa_cfg->ipr_cmd_pool); 5381 5382 ioa_cfg->ipr_cmd_pool = NULL; 5383} 5384 5385/** 5386 * ipr_free_mem - Frees memory allocated for an adapter 5387 * @ioa_cfg: ioa cfg struct 5388 * 5389 * Return value: 5390 * nothing 5391 **/ 5392static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 5393{ 5394 int i; 5395 5396 kfree(ioa_cfg->res_entries); 5397 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), 5398 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 5399 ipr_free_cmd_blks(ioa_cfg); 5400 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 5401 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 5402 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table), 5403 ioa_cfg->cfg_table, 5404 ioa_cfg->cfg_table_dma); 5405 5406 for (i = 0; i < IPR_NUM_HCAMS; i++) { 5407 pci_free_consistent(ioa_cfg->pdev, 5408 sizeof(struct ipr_hostrcb), 5409 ioa_cfg->hostrcb[i], 5410 ioa_cfg->hostrcb_dma[i]); 5411 } 5412 5413 ipr_free_dump(ioa_cfg); 5414 kfree(ioa_cfg->saved_mode_pages); 5415 kfree(ioa_cfg->trace); 5416} 5417 5418/** 5419 * ipr_free_all_resources - Free all allocated resources for an adapter. 5420 * @ipr_cmd: ipr command struct 5421 * 5422 * This function frees all allocated resources for the 5423 * specified adapter. 5424 * 5425 * Return value: 5426 * none 5427 **/ 5428static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 5429{ 5430 struct pci_dev *pdev = ioa_cfg->pdev; 5431 5432 ENTER; 5433 free_irq(pdev->irq, ioa_cfg); 5434 iounmap(ioa_cfg->hdw_dma_regs); 5435 pci_release_regions(pdev); 5436 ipr_free_mem(ioa_cfg); 5437 scsi_host_put(ioa_cfg->host); 5438 pci_disable_device(pdev); 5439 LEAVE; 5440} 5441 5442/** 5443 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 5444 * @ioa_cfg: ioa config struct 5445 * 5446 * Return value: 5447 * 0 on success / -ENOMEM on allocation failure 5448 **/ 5449static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 5450{ 5451 struct ipr_cmnd *ipr_cmd; 5452 struct ipr_ioarcb *ioarcb; 5453 dma_addr_t dma_addr; 5454 int i; 5455 5456 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, 5457 sizeof(struct ipr_cmnd), 8, 0); 5458 5459 if (!ioa_cfg->ipr_cmd_pool) 5460 return -ENOMEM; 5461 5462 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 5463 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr); 5464 5465 if (!ipr_cmd) { 5466 ipr_free_cmd_blks(ioa_cfg); 5467 return -ENOMEM; 5468 } 5469 5470 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 5471 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 5472 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 5473 5474 ioarcb = &ipr_cmd->ioarcb; 5475 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 5476 ioarcb->host_response_handle = cpu_to_be32(i << 2); 5477 ioarcb->write_ioadl_addr = 5478 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); 5479 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 5480 ioarcb->ioasa_host_pci_addr = 5481 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa)); 5482 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 5483 ipr_cmd->cmd_index = i; 5484 ipr_cmd->ioa_cfg = ioa_cfg; 5485 ipr_cmd->sense_buffer_dma = dma_addr + 5486 offsetof(struct ipr_cmnd, sense_buffer); 5487 5488 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5489 } 5490 5491 return 0; 5492} 5493 5494/** 5495 * ipr_alloc_mem - Allocate memory for an adapter 5496 * @ioa_cfg: ioa config struct 5497 * 5498 * Return value: 5499 * 0 on success / non-zero for error 5500 **/ 5501static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 5502{ 5503 struct pci_dev *pdev = ioa_cfg->pdev; 5504 int i, rc = -ENOMEM; 5505 5506 ENTER; 5507 ioa_cfg->res_entries = kmalloc(sizeof(struct ipr_resource_entry) * 5508 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL); 5509 5510 if (!ioa_cfg->res_entries) 5511 goto out; 5512 5513 memset(ioa_cfg->res_entries, 0, 5514 sizeof(struct ipr_resource_entry) * IPR_MAX_PHYSICAL_DEVS); 5515 5516 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++) 5517 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 5518 5519 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, 5520 sizeof(struct ipr_misc_cbs), 5521 &ioa_cfg->vpd_cbs_dma); 5522 5523 if (!ioa_cfg->vpd_cbs) 5524 goto out_free_res_entries; 5525 5526 if (ipr_alloc_cmd_blks(ioa_cfg)) 5527 goto out_free_vpd_cbs; 5528 5529 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, 5530 sizeof(u32) * IPR_NUM_CMD_BLKS, 5531 &ioa_cfg->host_rrq_dma); 5532 5533 if (!ioa_cfg->host_rrq) 5534 goto out_ipr_free_cmd_blocks; 5535 5536 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev, 5537 sizeof(struct ipr_config_table), 5538 &ioa_cfg->cfg_table_dma); 5539 5540 if (!ioa_cfg->cfg_table) 5541 goto out_free_host_rrq; 5542 5543 for (i = 0; i < IPR_NUM_HCAMS; i++) { 5544 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, 5545 sizeof(struct ipr_hostrcb), 5546 &ioa_cfg->hostrcb_dma[i]); 5547 5548 if (!ioa_cfg->hostrcb[i]) 5549 goto out_free_hostrcb_dma; 5550 5551 ioa_cfg->hostrcb[i]->hostrcb_dma = 5552 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 5553 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 5554 } 5555 5556 ioa_cfg->trace = kmalloc(sizeof(struct ipr_trace_entry) * 5557 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 5558 5559 if (!ioa_cfg->trace) 5560 goto out_free_hostrcb_dma; 5561 5562 memset(ioa_cfg->trace, 0, 5563 sizeof(struct ipr_trace_entry) * IPR_NUM_TRACE_ENTRIES); 5564 5565 rc = 0; 5566out: 5567 LEAVE; 5568 return rc; 5569 5570out_free_hostrcb_dma: 5571 while (i-- > 0) { 5572 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), 5573 ioa_cfg->hostrcb[i], 5574 ioa_cfg->hostrcb_dma[i]); 5575 } 5576 pci_free_consistent(pdev, sizeof(struct ipr_config_table), 5577 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma); 5578out_free_host_rrq: 5579 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 5580 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 5581out_ipr_free_cmd_blocks: 5582 ipr_free_cmd_blks(ioa_cfg); 5583out_free_vpd_cbs: 5584 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), 5585 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 5586out_free_res_entries: 5587 kfree(ioa_cfg->res_entries); 5588 goto out; 5589} 5590 5591/** 5592 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 5593 * @ioa_cfg: ioa config struct 5594 * 5595 * Return value: 5596 * none 5597 **/ 5598static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 5599{ 5600 int i; 5601 5602 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 5603 ioa_cfg->bus_attr[i].bus = i; 5604 ioa_cfg->bus_attr[i].qas_enabled = 0; 5605 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 5606 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 5607 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 5608 else 5609 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 5610 } 5611} 5612 5613/** 5614 * ipr_init_ioa_cfg - Initialize IOA config struct 5615 * @ioa_cfg: ioa config struct 5616 * @host: scsi host struct 5617 * @pdev: PCI dev struct 5618 * 5619 * Return value: 5620 * none 5621 **/ 5622static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 5623 struct Scsi_Host *host, struct pci_dev *pdev) 5624{ 5625 const struct ipr_interrupt_offsets *p; 5626 struct ipr_interrupts *t; 5627 void __iomem *base; 5628 5629 ioa_cfg->host = host; 5630 ioa_cfg->pdev = pdev; 5631 ioa_cfg->log_level = ipr_log_level; 5632 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 5633 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 5634 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); 5635 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); 5636 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 5637 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 5638 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 5639 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 5640 5641 INIT_LIST_HEAD(&ioa_cfg->free_q); 5642 INIT_LIST_HEAD(&ioa_cfg->pending_q); 5643 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 5644 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 5645 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 5646 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 5647 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg); 5648 init_waitqueue_head(&ioa_cfg->reset_wait_q); 5649 ioa_cfg->sdt_state = INACTIVE; 5650 5651 ipr_initialize_bus_attr(ioa_cfg); 5652 5653 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 5654 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 5655 host->max_channel = IPR_MAX_BUS_TO_SCAN; 5656 host->unique_id = host->host_no; 5657 host->max_cmd_len = IPR_MAX_CDB_LEN; 5658 pci_set_drvdata(pdev, ioa_cfg); 5659 5660 p = &ioa_cfg->chip_cfg->regs; 5661 t = &ioa_cfg->regs; 5662 base = ioa_cfg->hdw_dma_regs; 5663 5664 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 5665 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 5666 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 5667 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 5668 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 5669 t->ioarrin_reg = base + p->ioarrin_reg; 5670 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 5671 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 5672 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 5673} 5674 5675/** 5676 * ipr_get_chip_cfg - Find adapter chip configuration 5677 * @dev_id: PCI device id struct 5678 * 5679 * Return value: 5680 * ptr to chip config on success / NULL on failure 5681 **/ 5682static const struct ipr_chip_cfg_t * __devinit 5683ipr_get_chip_cfg(const struct pci_device_id *dev_id) 5684{ 5685 int i; 5686 5687 if (dev_id->driver_data) 5688 return (const struct ipr_chip_cfg_t *)dev_id->driver_data; 5689 5690 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 5691 if (ipr_chip[i].vendor == dev_id->vendor && 5692 ipr_chip[i].device == dev_id->device) 5693 return ipr_chip[i].cfg; 5694 return NULL; 5695} 5696 5697/** 5698 * ipr_probe_ioa - Allocates memory and does first stage of initialization 5699 * @pdev: PCI device struct 5700 * @dev_id: PCI device id struct 5701 * 5702 * Return value: 5703 * 0 on success / non-zero on failure 5704 **/ 5705static int __devinit ipr_probe_ioa(struct pci_dev *pdev, 5706 const struct pci_device_id *dev_id) 5707{ 5708 struct ipr_ioa_cfg *ioa_cfg; 5709 struct Scsi_Host *host; 5710 unsigned long ipr_regs_pci; 5711 void __iomem *ipr_regs; 5712 u32 rc = PCIBIOS_SUCCESSFUL; 5713 5714 ENTER; 5715 5716 if ((rc = pci_enable_device(pdev))) { 5717 dev_err(&pdev->dev, "Cannot enable adapter\n"); 5718 goto out; 5719 } 5720 5721 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 5722 5723 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 5724 5725 if (!host) { 5726 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 5727 rc = -ENOMEM; 5728 goto out_disable; 5729 } 5730 5731 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 5732 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 5733 5734 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id); 5735 5736 if (!ioa_cfg->chip_cfg) { 5737 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 5738 dev_id->vendor, dev_id->device); 5739 goto out_scsi_host_put; 5740 } 5741 5742 ipr_regs_pci = pci_resource_start(pdev, 0); 5743 5744 rc = pci_request_regions(pdev, IPR_NAME); 5745 if (rc < 0) { 5746 dev_err(&pdev->dev, 5747 "Couldn't register memory range of registers\n"); 5748 goto out_scsi_host_put; 5749 } 5750 5751 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0)); 5752 5753 if (!ipr_regs) { 5754 dev_err(&pdev->dev, 5755 "Couldn't map memory range of registers\n"); 5756 rc = -ENOMEM; 5757 goto out_release_regions; 5758 } 5759 5760 ioa_cfg->hdw_dma_regs = ipr_regs; 5761 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 5762 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 5763 5764 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 5765 5766 pci_set_master(pdev); 5767 5768 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 5769 if (rc < 0) { 5770 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); 5771 goto cleanup_nomem; 5772 } 5773 5774 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 5775 ioa_cfg->chip_cfg->cache_line_size); 5776 5777 if (rc != PCIBIOS_SUCCESSFUL) { 5778 dev_err(&pdev->dev, "Write of cache line size failed\n"); 5779 rc = -EIO; 5780 goto cleanup_nomem; 5781 } 5782 5783 /* Save away PCI config space for use following IOA reset */ 5784 rc = pci_save_state(pdev); 5785 5786 if (rc != PCIBIOS_SUCCESSFUL) { 5787 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 5788 rc = -EIO; 5789 goto cleanup_nomem; 5790 } 5791 5792 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 5793 goto cleanup_nomem; 5794 5795 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 5796 goto cleanup_nomem; 5797 5798 rc = ipr_alloc_mem(ioa_cfg); 5799 if (rc < 0) { 5800 dev_err(&pdev->dev, 5801 "Couldn't allocate enough memory for device driver!\n"); 5802 goto cleanup_nomem; 5803 } 5804 5805 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 5806 rc = request_irq(pdev->irq, ipr_isr, SA_SHIRQ, IPR_NAME, ioa_cfg); 5807 5808 if (rc) { 5809 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 5810 pdev->irq, rc); 5811 goto cleanup_nolog; 5812 } 5813 5814 spin_lock(&ipr_driver_lock); 5815 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 5816 spin_unlock(&ipr_driver_lock); 5817 5818 LEAVE; 5819out: 5820 return rc; 5821 5822cleanup_nolog: 5823 ipr_free_mem(ioa_cfg); 5824cleanup_nomem: 5825 iounmap(ipr_regs); 5826out_release_regions: 5827 pci_release_regions(pdev); 5828out_scsi_host_put: 5829 scsi_host_put(host); 5830out_disable: 5831 pci_disable_device(pdev); 5832 goto out; 5833} 5834 5835/** 5836 * ipr_scan_vsets - Scans for VSET devices 5837 * @ioa_cfg: ioa config struct 5838 * 5839 * Description: Since the VSET resources do not follow SAM in that we can have 5840 * sparse LUNs with no LUN 0, we have to scan for these ourselves. 5841 * 5842 * Return value: 5843 * none 5844 **/ 5845static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) 5846{ 5847 int target, lun; 5848 5849 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) 5850 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) 5851 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); 5852} 5853 5854/** 5855 * ipr_initiate_ioa_bringdown - Bring down an adapter 5856 * @ioa_cfg: ioa config struct 5857 * @shutdown_type: shutdown type 5858 * 5859 * Description: This function will initiate bringing down the adapter. 5860 * This consists of issuing an IOA shutdown to the adapter 5861 * to flush the cache, and running BIST. 5862 * If the caller needs to wait on the completion of the reset, 5863 * the caller must sleep on the reset_wait_q. 5864 * 5865 * Return value: 5866 * none 5867 **/ 5868static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 5869 enum ipr_shutdown_type shutdown_type) 5870{ 5871 ENTER; 5872 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 5873 ioa_cfg->sdt_state = ABORT_DUMP; 5874 ioa_cfg->reset_retries = 0; 5875 ioa_cfg->in_ioa_bringdown = 1; 5876 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 5877 LEAVE; 5878} 5879 5880/** 5881 * __ipr_remove - Remove a single adapter 5882 * @pdev: pci device struct 5883 * 5884 * Adapter hot plug remove entry point. 5885 * 5886 * Return value: 5887 * none 5888 **/ 5889static void __ipr_remove(struct pci_dev *pdev) 5890{ 5891 unsigned long host_lock_flags = 0; 5892 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 5893 ENTER; 5894 5895 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 5896 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 5897 5898 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 5899 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5900 flush_scheduled_work(); 5901 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 5902 5903 spin_lock(&ipr_driver_lock); 5904 list_del(&ioa_cfg->queue); 5905 spin_unlock(&ipr_driver_lock); 5906 5907 if (ioa_cfg->sdt_state == ABORT_DUMP) 5908 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 5909 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 5910 5911 ipr_free_all_resources(ioa_cfg); 5912 5913 LEAVE; 5914} 5915 5916/** 5917 * ipr_remove - IOA hot plug remove entry point 5918 * @pdev: pci device struct 5919 * 5920 * Adapter hot plug remove entry point. 5921 * 5922 * Return value: 5923 * none 5924 **/ 5925static void ipr_remove(struct pci_dev *pdev) 5926{ 5927 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 5928 5929 ENTER; 5930 5931 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 5932 &ipr_trace_attr); 5933 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj, 5934 &ipr_dump_attr); 5935 scsi_remove_host(ioa_cfg->host); 5936 5937 __ipr_remove(pdev); 5938 5939 LEAVE; 5940} 5941 5942/** 5943 * ipr_probe - Adapter hot plug add entry point 5944 * 5945 * Return value: 5946 * 0 on success / non-zero on failure 5947 **/ 5948static int __devinit ipr_probe(struct pci_dev *pdev, 5949 const struct pci_device_id *dev_id) 5950{ 5951 struct ipr_ioa_cfg *ioa_cfg; 5952 int rc; 5953 5954 rc = ipr_probe_ioa(pdev, dev_id); 5955 5956 if (rc) 5957 return rc; 5958 5959 ioa_cfg = pci_get_drvdata(pdev); 5960 rc = ipr_probe_ioa_part2(ioa_cfg); 5961 5962 if (rc) { 5963 __ipr_remove(pdev); 5964 return rc; 5965 } 5966 5967 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 5968 5969 if (rc) { 5970 __ipr_remove(pdev); 5971 return rc; 5972 } 5973 5974 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj, 5975 &ipr_trace_attr); 5976 5977 if (rc) { 5978 scsi_remove_host(ioa_cfg->host); 5979 __ipr_remove(pdev); 5980 return rc; 5981 } 5982 5983 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj, 5984 &ipr_dump_attr); 5985 5986 if (rc) { 5987 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 5988 &ipr_trace_attr); 5989 scsi_remove_host(ioa_cfg->host); 5990 __ipr_remove(pdev); 5991 return rc; 5992 } 5993 5994 scsi_scan_host(ioa_cfg->host); 5995 ipr_scan_vsets(ioa_cfg); 5996 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); 5997 ioa_cfg->allow_ml_add_del = 1; 5998 schedule_work(&ioa_cfg->work_q); 5999 return 0; 6000} 6001 6002/** 6003 * ipr_shutdown - Shutdown handler. 6004 * @dev: device struct 6005 * 6006 * This function is invoked upon system shutdown/reboot. It will issue 6007 * an adapter shutdown to the adapter to flush the write cache. 6008 * 6009 * Return value: 6010 * none 6011 **/ 6012static void ipr_shutdown(struct device *dev) 6013{ 6014 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(to_pci_dev(dev)); 6015 unsigned long lock_flags = 0; 6016 6017 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6018 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 6019 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6020 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6021} 6022 6023static struct pci_device_id ipr_pci_table[] __devinitdata = { 6024 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 6025 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 6026 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6027 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 6028 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 6029 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6030 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 6031 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 6032 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6033 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 6034 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 6035 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6036 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 6037 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 6038 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6039 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 6040 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 6041 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6042 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 6043 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 6044 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6045 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 6046 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 6047 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, 6048 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 6049 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 6050 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, 6051 { } 6052}; 6053MODULE_DEVICE_TABLE(pci, ipr_pci_table); 6054 6055static struct pci_driver ipr_driver = { 6056 .name = IPR_NAME, 6057 .id_table = ipr_pci_table, 6058 .probe = ipr_probe, 6059 .remove = ipr_remove, 6060 .driver = { 6061 .shutdown = ipr_shutdown, 6062 }, 6063}; 6064 6065/** 6066 * ipr_init - Module entry point 6067 * 6068 * Return value: 6069 * 0 on success / negative value on failure 6070 **/ 6071static int __init ipr_init(void) 6072{ 6073 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 6074 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 6075 6076 return pci_module_init(&ipr_driver); 6077} 6078 6079/** 6080 * ipr_exit - Module unload 6081 * 6082 * Module unload entry point. 6083 * 6084 * Return value: 6085 * none 6086 **/ 6087static void __exit ipr_exit(void) 6088{ 6089 pci_unregister_driver(&ipr_driver); 6090} 6091 6092module_init(ipr_init); 6093module_exit(ipr_exit); 6094