ipr.c revision 11cd8f120173a707e9ed7b78f7af8cde5a1ebb90
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, struct device_attribute *attr, 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 2908static int ipr_eh_host_reset(struct scsi_cmnd * cmd) 2909{ 2910 int rc; 2911 2912 spin_lock_irq(cmd->device->host->host_lock); 2913 rc = __ipr_eh_host_reset(cmd); 2914 spin_unlock_irq(cmd->device->host->host_lock); 2915 2916 return rc; 2917} 2918 2919/** 2920 * ipr_eh_dev_reset - Reset the device 2921 * @scsi_cmd: scsi command struct 2922 * 2923 * This function issues a device reset to the affected device. 2924 * A LUN reset will be sent to the device first. If that does 2925 * not work, a target reset will be sent. 2926 * 2927 * Return value: 2928 * SUCCESS / FAILED 2929 **/ 2930static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) 2931{ 2932 struct ipr_cmnd *ipr_cmd; 2933 struct ipr_ioa_cfg *ioa_cfg; 2934 struct ipr_resource_entry *res; 2935 struct ipr_cmd_pkt *cmd_pkt; 2936 u32 ioasc; 2937 2938 ENTER; 2939 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 2940 res = scsi_cmd->device->hostdata; 2941 2942 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res))) 2943 return FAILED; 2944 2945 /* 2946 * If we are currently going through reset/reload, return failed. This will force the 2947 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 2948 * reset to complete 2949 */ 2950 if (ioa_cfg->in_reset_reload) 2951 return FAILED; 2952 if (ioa_cfg->ioa_is_dead) 2953 return FAILED; 2954 2955 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 2956 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) { 2957 if (ipr_cmd->scsi_cmd) 2958 ipr_cmd->done = ipr_scsi_eh_done; 2959 } 2960 } 2961 2962 res->resetting_device = 1; 2963 2964 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 2965 2966 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 2967 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 2968 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 2969 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 2970 2971 ipr_sdev_err(scsi_cmd->device, "Resetting device\n"); 2972 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 2973 2974 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 2975 2976 res->resetting_device = 0; 2977 2978 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 2979 2980 LEAVE; 2981 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); 2982} 2983 2984static int ipr_eh_dev_reset(struct scsi_cmnd * cmd) 2985{ 2986 int rc; 2987 2988 spin_lock_irq(cmd->device->host->host_lock); 2989 rc = __ipr_eh_dev_reset(cmd); 2990 spin_unlock_irq(cmd->device->host->host_lock); 2991 2992 return rc; 2993} 2994 2995/** 2996 * ipr_bus_reset_done - Op done function for bus reset. 2997 * @ipr_cmd: ipr command struct 2998 * 2999 * This function is the op done function for a bus reset 3000 * 3001 * Return value: 3002 * none 3003 **/ 3004static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 3005{ 3006 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3007 struct ipr_resource_entry *res; 3008 3009 ENTER; 3010 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3011 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle, 3012 sizeof(res->cfgte.res_handle))) { 3013 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus); 3014 break; 3015 } 3016 } 3017 3018 /* 3019 * If abort has not completed, indicate the reset has, else call the 3020 * abort's done function to wake the sleeping eh thread 3021 */ 3022 if (ipr_cmd->sibling->sibling) 3023 ipr_cmd->sibling->sibling = NULL; 3024 else 3025 ipr_cmd->sibling->done(ipr_cmd->sibling); 3026 3027 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3028 LEAVE; 3029} 3030 3031/** 3032 * ipr_abort_timeout - An abort task has timed out 3033 * @ipr_cmd: ipr command struct 3034 * 3035 * This function handles when an abort task times out. If this 3036 * happens we issue a bus reset since we have resources tied 3037 * up that must be freed before returning to the midlayer. 3038 * 3039 * Return value: 3040 * none 3041 **/ 3042static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 3043{ 3044 struct ipr_cmnd *reset_cmd; 3045 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3046 struct ipr_cmd_pkt *cmd_pkt; 3047 unsigned long lock_flags = 0; 3048 3049 ENTER; 3050 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3051 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 3052 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3053 return; 3054 } 3055 3056 ipr_sdev_err(ipr_cmd->u.sdev, "Abort timed out. Resetting bus\n"); 3057 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3058 ipr_cmd->sibling = reset_cmd; 3059 reset_cmd->sibling = ipr_cmd; 3060 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 3061 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 3062 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3063 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 3064 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 3065 3066 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 3067 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3068 LEAVE; 3069} 3070 3071/** 3072 * ipr_cancel_op - Cancel specified op 3073 * @scsi_cmd: scsi command struct 3074 * 3075 * This function cancels specified op. 3076 * 3077 * Return value: 3078 * SUCCESS / FAILED 3079 **/ 3080static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) 3081{ 3082 struct ipr_cmnd *ipr_cmd; 3083 struct ipr_ioa_cfg *ioa_cfg; 3084 struct ipr_resource_entry *res; 3085 struct ipr_cmd_pkt *cmd_pkt; 3086 u32 ioasc; 3087 int op_found = 0; 3088 3089 ENTER; 3090 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 3091 res = scsi_cmd->device->hostdata; 3092 3093 /* If we are currently going through reset/reload, return failed. 3094 * This will force the mid-layer to call ipr_eh_host_reset, 3095 * which will then go to sleep and wait for the reset to complete 3096 */ 3097 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) 3098 return FAILED; 3099 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res))) 3100 return FAILED; 3101 3102 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3103 if (ipr_cmd->scsi_cmd == scsi_cmd) { 3104 ipr_cmd->done = ipr_scsi_eh_done; 3105 op_found = 1; 3106 break; 3107 } 3108 } 3109 3110 if (!op_found) 3111 return SUCCESS; 3112 3113 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3114 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 3115 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 3116 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3117 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 3118 ipr_cmd->u.sdev = scsi_cmd->device; 3119 3120 ipr_sdev_err(scsi_cmd->device, "Aborting command: %02X\n", scsi_cmd->cmnd[0]); 3121 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 3122 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3123 3124 /* 3125 * If the abort task timed out and we sent a bus reset, we will get 3126 * one the following responses to the abort 3127 */ 3128 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 3129 ioasc = 0; 3130 ipr_trace; 3131 } 3132 3133 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3134 res->needs_sync_complete = 1; 3135 3136 LEAVE; 3137 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); 3138} 3139 3140/** 3141 * ipr_eh_abort - Abort a single op 3142 * @scsi_cmd: scsi command struct 3143 * 3144 * Return value: 3145 * SUCCESS / FAILED 3146 **/ 3147static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) 3148{ 3149 unsigned long flags; 3150 int rc; 3151 3152 ENTER; 3153 3154 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 3155 rc = ipr_cancel_op(scsi_cmd); 3156 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 3157 3158 LEAVE; 3159 return rc; 3160} 3161 3162/** 3163 * ipr_handle_other_interrupt - Handle "other" interrupts 3164 * @ioa_cfg: ioa config struct 3165 * @int_reg: interrupt register 3166 * 3167 * Return value: 3168 * IRQ_NONE / IRQ_HANDLED 3169 **/ 3170static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 3171 volatile u32 int_reg) 3172{ 3173 irqreturn_t rc = IRQ_HANDLED; 3174 3175 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 3176 /* Mask the interrupt */ 3177 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 3178 3179 /* Clear the interrupt */ 3180 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); 3181 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 3182 3183 list_del(&ioa_cfg->reset_cmd->queue); 3184 del_timer(&ioa_cfg->reset_cmd->timer); 3185 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 3186 } else { 3187 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 3188 ioa_cfg->ioa_unit_checked = 1; 3189 else 3190 dev_err(&ioa_cfg->pdev->dev, 3191 "Permanent IOA failure. 0x%08X\n", int_reg); 3192 3193 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 3194 ioa_cfg->sdt_state = GET_DUMP; 3195 3196 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 3197 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3198 } 3199 3200 return rc; 3201} 3202 3203/** 3204 * ipr_isr - Interrupt service routine 3205 * @irq: irq number 3206 * @devp: pointer to ioa config struct 3207 * @regs: pt_regs struct 3208 * 3209 * Return value: 3210 * IRQ_NONE / IRQ_HANDLED 3211 **/ 3212static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs) 3213{ 3214 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 3215 unsigned long lock_flags = 0; 3216 volatile u32 int_reg, int_mask_reg; 3217 u32 ioasc; 3218 u16 cmd_index; 3219 struct ipr_cmnd *ipr_cmd; 3220 irqreturn_t rc = IRQ_NONE; 3221 3222 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3223 3224 /* If interrupts are disabled, ignore the interrupt */ 3225 if (!ioa_cfg->allow_interrupts) { 3226 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3227 return IRQ_NONE; 3228 } 3229 3230 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 3231 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 3232 3233 /* If an interrupt on the adapter did not occur, ignore it */ 3234 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) { 3235 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3236 return IRQ_NONE; 3237 } 3238 3239 while (1) { 3240 ipr_cmd = NULL; 3241 3242 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 3243 ioa_cfg->toggle_bit) { 3244 3245 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & 3246 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 3247 3248 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { 3249 ioa_cfg->errors_logged++; 3250 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n"); 3251 3252 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 3253 ioa_cfg->sdt_state = GET_DUMP; 3254 3255 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3256 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3257 return IRQ_HANDLED; 3258 } 3259 3260 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 3261 3262 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3263 3264 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 3265 3266 list_del(&ipr_cmd->queue); 3267 del_timer(&ipr_cmd->timer); 3268 ipr_cmd->done(ipr_cmd); 3269 3270 rc = IRQ_HANDLED; 3271 3272 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { 3273 ioa_cfg->hrrq_curr++; 3274 } else { 3275 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 3276 ioa_cfg->toggle_bit ^= 1u; 3277 } 3278 } 3279 3280 if (ipr_cmd != NULL) { 3281 /* Clear the PCI interrupt */ 3282 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg); 3283 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 3284 } else 3285 break; 3286 } 3287 3288 if (unlikely(rc == IRQ_NONE)) 3289 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 3290 3291 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3292 return rc; 3293} 3294 3295/** 3296 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 3297 * @ioa_cfg: ioa config struct 3298 * @ipr_cmd: ipr command struct 3299 * 3300 * Return value: 3301 * 0 on success / -1 on failure 3302 **/ 3303static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 3304 struct ipr_cmnd *ipr_cmd) 3305{ 3306 int i; 3307 struct scatterlist *sglist; 3308 u32 length; 3309 u32 ioadl_flags = 0; 3310 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3311 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3312 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 3313 3314 length = scsi_cmd->request_bufflen; 3315 3316 if (length == 0) 3317 return 0; 3318 3319 if (scsi_cmd->use_sg) { 3320 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, 3321 scsi_cmd->request_buffer, 3322 scsi_cmd->use_sg, 3323 scsi_cmd->sc_data_direction); 3324 3325 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 3326 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 3327 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3328 ioarcb->write_data_transfer_length = cpu_to_be32(length); 3329 ioarcb->write_ioadl_len = 3330 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 3331 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 3332 ioadl_flags = IPR_IOADL_FLAGS_READ; 3333 ioarcb->read_data_transfer_length = cpu_to_be32(length); 3334 ioarcb->read_ioadl_len = 3335 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 3336 } 3337 3338 sglist = scsi_cmd->request_buffer; 3339 3340 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3341 ioadl[i].flags_and_data_len = 3342 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i])); 3343 ioadl[i].address = 3344 cpu_to_be32(sg_dma_address(&sglist[i])); 3345 } 3346 3347 if (likely(ipr_cmd->dma_use_sg)) { 3348 ioadl[i-1].flags_and_data_len |= 3349 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3350 return 0; 3351 } else 3352 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 3353 } else { 3354 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 3355 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 3356 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3357 ioarcb->write_data_transfer_length = cpu_to_be32(length); 3358 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 3359 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 3360 ioadl_flags = IPR_IOADL_FLAGS_READ; 3361 ioarcb->read_data_transfer_length = cpu_to_be32(length); 3362 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 3363 } 3364 3365 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev, 3366 scsi_cmd->request_buffer, length, 3367 scsi_cmd->sc_data_direction); 3368 3369 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) { 3370 ipr_cmd->dma_use_sg = 1; 3371 ioadl[0].flags_and_data_len = 3372 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST); 3373 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle); 3374 return 0; 3375 } else 3376 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n"); 3377 } 3378 3379 return -1; 3380} 3381 3382/** 3383 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes 3384 * @scsi_cmd: scsi command struct 3385 * 3386 * Return value: 3387 * task attributes 3388 **/ 3389static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) 3390{ 3391 u8 tag[2]; 3392 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; 3393 3394 if (scsi_populate_tag_msg(scsi_cmd, tag)) { 3395 switch (tag[0]) { 3396 case MSG_SIMPLE_TAG: 3397 rc = IPR_FLAGS_LO_SIMPLE_TASK; 3398 break; 3399 case MSG_HEAD_TAG: 3400 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; 3401 break; 3402 case MSG_ORDERED_TAG: 3403 rc = IPR_FLAGS_LO_ORDERED_TASK; 3404 break; 3405 }; 3406 } 3407 3408 return rc; 3409} 3410 3411/** 3412 * ipr_erp_done - Process completion of ERP for a device 3413 * @ipr_cmd: ipr command struct 3414 * 3415 * This function copies the sense buffer into the scsi_cmd 3416 * struct and pushes the scsi_done function. 3417 * 3418 * Return value: 3419 * nothing 3420 **/ 3421static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 3422{ 3423 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3424 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 3425 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3426 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3427 3428 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 3429 scsi_cmd->result |= (DID_ERROR << 16); 3430 ipr_sdev_err(scsi_cmd->device, 3431 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 3432 } else { 3433 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 3434 SCSI_SENSE_BUFFERSIZE); 3435 } 3436 3437 if (res) { 3438 res->needs_sync_complete = 1; 3439 res->in_erp = 0; 3440 } 3441 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 3442 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3443 scsi_cmd->scsi_done(scsi_cmd); 3444} 3445 3446/** 3447 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 3448 * @ipr_cmd: ipr command struct 3449 * 3450 * Return value: 3451 * none 3452 **/ 3453static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 3454{ 3455 struct ipr_ioarcb *ioarcb; 3456 struct ipr_ioasa *ioasa; 3457 3458 ioarcb = &ipr_cmd->ioarcb; 3459 ioasa = &ipr_cmd->ioasa; 3460 3461 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 3462 ioarcb->write_data_transfer_length = 0; 3463 ioarcb->read_data_transfer_length = 0; 3464 ioarcb->write_ioadl_len = 0; 3465 ioarcb->read_ioadl_len = 0; 3466 ioasa->ioasc = 0; 3467 ioasa->residual_data_len = 0; 3468} 3469 3470/** 3471 * ipr_erp_request_sense - Send request sense to a device 3472 * @ipr_cmd: ipr command struct 3473 * 3474 * This function sends a request sense to a device as a result 3475 * of a check condition. 3476 * 3477 * Return value: 3478 * nothing 3479 **/ 3480static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 3481{ 3482 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 3483 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3484 3485 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 3486 ipr_erp_done(ipr_cmd); 3487 return; 3488 } 3489 3490 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 3491 3492 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 3493 cmd_pkt->cdb[0] = REQUEST_SENSE; 3494 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 3495 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 3496 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 3497 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 3498 3499 ipr_cmd->ioadl[0].flags_and_data_len = 3500 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE); 3501 ipr_cmd->ioadl[0].address = 3502 cpu_to_be32(ipr_cmd->sense_buffer_dma); 3503 3504 ipr_cmd->ioarcb.read_ioadl_len = 3505 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 3506 ipr_cmd->ioarcb.read_data_transfer_length = 3507 cpu_to_be32(SCSI_SENSE_BUFFERSIZE); 3508 3509 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 3510 IPR_REQUEST_SENSE_TIMEOUT * 2); 3511} 3512 3513/** 3514 * ipr_erp_cancel_all - Send cancel all to a device 3515 * @ipr_cmd: ipr command struct 3516 * 3517 * This function sends a cancel all to a device to clear the 3518 * queue. If we are running TCQ on the device, QERR is set to 1, 3519 * which means all outstanding ops have been dropped on the floor. 3520 * Cancel all will return them to us. 3521 * 3522 * Return value: 3523 * nothing 3524 **/ 3525static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 3526{ 3527 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3528 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 3529 struct ipr_cmd_pkt *cmd_pkt; 3530 3531 res->in_erp = 1; 3532 3533 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 3534 3535 if (!scsi_get_tag_type(scsi_cmd->device)) { 3536 ipr_erp_request_sense(ipr_cmd); 3537 return; 3538 } 3539 3540 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 3541 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3542 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 3543 3544 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 3545 IPR_CANCEL_ALL_TIMEOUT); 3546} 3547 3548/** 3549 * ipr_dump_ioasa - Dump contents of IOASA 3550 * @ioa_cfg: ioa config struct 3551 * @ipr_cmd: ipr command struct 3552 * 3553 * This function is invoked by the interrupt handler when ops 3554 * fail. It will log the IOASA if appropriate. Only called 3555 * for GPDD ops. 3556 * 3557 * Return value: 3558 * none 3559 **/ 3560static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 3561 struct ipr_cmnd *ipr_cmd) 3562{ 3563 int i; 3564 u16 data_len; 3565 u32 ioasc; 3566 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 3567 __be32 *ioasa_data = (__be32 *)ioasa; 3568 int error_index; 3569 3570 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK; 3571 3572 if (0 == ioasc) 3573 return; 3574 3575 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 3576 return; 3577 3578 error_index = ipr_get_error(ioasc); 3579 3580 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 3581 /* Don't log an error if the IOA already logged one */ 3582 if (ioasa->ilid != 0) 3583 return; 3584 3585 if (ipr_error_table[error_index].log_ioasa == 0) 3586 return; 3587 } 3588 3589 ipr_sdev_err(ipr_cmd->scsi_cmd->device, "%s\n", 3590 ipr_error_table[error_index].error); 3591 3592 if ((ioasa->u.gpdd.end_state <= ARRAY_SIZE(ipr_gpdd_dev_end_states)) && 3593 (ioasa->u.gpdd.bus_phase <= ARRAY_SIZE(ipr_gpdd_dev_bus_phases))) { 3594 ipr_sdev_err(ipr_cmd->scsi_cmd->device, 3595 "Device End state: %s Phase: %s\n", 3596 ipr_gpdd_dev_end_states[ioasa->u.gpdd.end_state], 3597 ipr_gpdd_dev_bus_phases[ioasa->u.gpdd.bus_phase]); 3598 } 3599 3600 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len)) 3601 data_len = sizeof(struct ipr_ioasa); 3602 else 3603 data_len = be16_to_cpu(ioasa->ret_stat_len); 3604 3605 ipr_err("IOASA Dump:\n"); 3606 3607 for (i = 0; i < data_len / 4; i += 4) { 3608 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 3609 be32_to_cpu(ioasa_data[i]), 3610 be32_to_cpu(ioasa_data[i+1]), 3611 be32_to_cpu(ioasa_data[i+2]), 3612 be32_to_cpu(ioasa_data[i+3])); 3613 } 3614} 3615 3616/** 3617 * ipr_gen_sense - Generate SCSI sense data from an IOASA 3618 * @ioasa: IOASA 3619 * @sense_buf: sense data buffer 3620 * 3621 * Return value: 3622 * none 3623 **/ 3624static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 3625{ 3626 u32 failing_lba; 3627 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 3628 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 3629 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 3630 u32 ioasc = be32_to_cpu(ioasa->ioasc); 3631 3632 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 3633 3634 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 3635 return; 3636 3637 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 3638 3639 if (ipr_is_vset_device(res) && 3640 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 3641 ioasa->u.vset.failing_lba_hi != 0) { 3642 sense_buf[0] = 0x72; 3643 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 3644 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 3645 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 3646 3647 sense_buf[7] = 12; 3648 sense_buf[8] = 0; 3649 sense_buf[9] = 0x0A; 3650 sense_buf[10] = 0x80; 3651 3652 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 3653 3654 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 3655 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 3656 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 3657 sense_buf[15] = failing_lba & 0x000000ff; 3658 3659 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 3660 3661 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 3662 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 3663 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 3664 sense_buf[19] = failing_lba & 0x000000ff; 3665 } else { 3666 sense_buf[0] = 0x70; 3667 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 3668 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 3669 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 3670 3671 /* Illegal request */ 3672 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 3673 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 3674 sense_buf[7] = 10; /* additional length */ 3675 3676 /* IOARCB was in error */ 3677 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 3678 sense_buf[15] = 0xC0; 3679 else /* Parameter data was invalid */ 3680 sense_buf[15] = 0x80; 3681 3682 sense_buf[16] = 3683 ((IPR_FIELD_POINTER_MASK & 3684 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff; 3685 sense_buf[17] = 3686 (IPR_FIELD_POINTER_MASK & 3687 be32_to_cpu(ioasa->ioasc_specific)) & 0xff; 3688 } else { 3689 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 3690 if (ipr_is_vset_device(res)) 3691 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 3692 else 3693 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 3694 3695 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 3696 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 3697 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 3698 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 3699 sense_buf[6] = failing_lba & 0x000000ff; 3700 } 3701 3702 sense_buf[7] = 6; /* additional length */ 3703 } 3704 } 3705} 3706 3707/** 3708 * ipr_erp_start - Process an error response for a SCSI op 3709 * @ioa_cfg: ioa config struct 3710 * @ipr_cmd: ipr command struct 3711 * 3712 * This function determines whether or not to initiate ERP 3713 * on the affected device. 3714 * 3715 * Return value: 3716 * nothing 3717 **/ 3718static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 3719 struct ipr_cmnd *ipr_cmd) 3720{ 3721 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3722 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 3723 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3724 3725 if (!res) { 3726 ipr_scsi_eh_done(ipr_cmd); 3727 return; 3728 } 3729 3730 if (ipr_is_gscsi(res)) 3731 ipr_dump_ioasa(ioa_cfg, ipr_cmd); 3732 else 3733 ipr_gen_sense(ipr_cmd); 3734 3735 switch (ioasc & IPR_IOASC_IOASC_MASK) { 3736 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 3737 scsi_cmd->result |= (DID_IMM_RETRY << 16); 3738 break; 3739 case IPR_IOASC_IR_RESOURCE_HANDLE: 3740 scsi_cmd->result |= (DID_NO_CONNECT << 16); 3741 break; 3742 case IPR_IOASC_HW_SEL_TIMEOUT: 3743 scsi_cmd->result |= (DID_NO_CONNECT << 16); 3744 res->needs_sync_complete = 1; 3745 break; 3746 case IPR_IOASC_SYNC_REQUIRED: 3747 if (!res->in_erp) 3748 res->needs_sync_complete = 1; 3749 scsi_cmd->result |= (DID_IMM_RETRY << 16); 3750 break; 3751 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 3752 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 3753 break; 3754 case IPR_IOASC_BUS_WAS_RESET: 3755 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 3756 /* 3757 * Report the bus reset and ask for a retry. The device 3758 * will give CC/UA the next command. 3759 */ 3760 if (!res->resetting_device) 3761 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 3762 scsi_cmd->result |= (DID_ERROR << 16); 3763 res->needs_sync_complete = 1; 3764 break; 3765 case IPR_IOASC_HW_DEV_BUS_STATUS: 3766 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 3767 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 3768 ipr_erp_cancel_all(ipr_cmd); 3769 return; 3770 } 3771 res->needs_sync_complete = 1; 3772 break; 3773 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 3774 break; 3775 default: 3776 scsi_cmd->result |= (DID_ERROR << 16); 3777 if (!ipr_is_vset_device(res)) 3778 res->needs_sync_complete = 1; 3779 break; 3780 } 3781 3782 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 3783 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3784 scsi_cmd->scsi_done(scsi_cmd); 3785} 3786 3787/** 3788 * ipr_scsi_done - mid-layer done function 3789 * @ipr_cmd: ipr command struct 3790 * 3791 * This function is invoked by the interrupt handler for 3792 * ops generated by the SCSI mid-layer 3793 * 3794 * Return value: 3795 * none 3796 **/ 3797static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 3798{ 3799 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3800 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3801 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3802 3803 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len); 3804 3805 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 3806 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 3807 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3808 scsi_cmd->scsi_done(scsi_cmd); 3809 } else 3810 ipr_erp_start(ioa_cfg, ipr_cmd); 3811} 3812 3813/** 3814 * ipr_save_ioafp_mode_select - Save adapters mode select data 3815 * @ioa_cfg: ioa config struct 3816 * @scsi_cmd: scsi command struct 3817 * 3818 * This function saves mode select data for the adapter to 3819 * use following an adapter reset. 3820 * 3821 * Return value: 3822 * 0 on success / SCSI_MLQUEUE_HOST_BUSY on failure 3823 **/ 3824static int ipr_save_ioafp_mode_select(struct ipr_ioa_cfg *ioa_cfg, 3825 struct scsi_cmnd *scsi_cmd) 3826{ 3827 if (!ioa_cfg->saved_mode_pages) { 3828 ioa_cfg->saved_mode_pages = kmalloc(sizeof(struct ipr_mode_pages), 3829 GFP_ATOMIC); 3830 if (!ioa_cfg->saved_mode_pages) { 3831 dev_err(&ioa_cfg->pdev->dev, 3832 "IOA mode select buffer allocation failed\n"); 3833 return SCSI_MLQUEUE_HOST_BUSY; 3834 } 3835 } 3836 3837 memcpy(ioa_cfg->saved_mode_pages, scsi_cmd->buffer, scsi_cmd->cmnd[4]); 3838 ioa_cfg->saved_mode_page_len = scsi_cmd->cmnd[4]; 3839 return 0; 3840} 3841 3842/** 3843 * ipr_queuecommand - Queue a mid-layer request 3844 * @scsi_cmd: scsi command struct 3845 * @done: done function 3846 * 3847 * This function queues a request generated by the mid-layer. 3848 * 3849 * Return value: 3850 * 0 on success 3851 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 3852 * SCSI_MLQUEUE_HOST_BUSY if host is busy 3853 **/ 3854static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, 3855 void (*done) (struct scsi_cmnd *)) 3856{ 3857 struct ipr_ioa_cfg *ioa_cfg; 3858 struct ipr_resource_entry *res; 3859 struct ipr_ioarcb *ioarcb; 3860 struct ipr_cmnd *ipr_cmd; 3861 int rc = 0; 3862 3863 scsi_cmd->scsi_done = done; 3864 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 3865 res = scsi_cmd->device->hostdata; 3866 scsi_cmd->result = (DID_OK << 16); 3867 3868 /* 3869 * We are currently blocking all devices due to a host reset 3870 * We have told the host to stop giving us new requests, but 3871 * ERP ops don't count. FIXME 3872 */ 3873 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) 3874 return SCSI_MLQUEUE_HOST_BUSY; 3875 3876 /* 3877 * FIXME - Create scsi_set_host_offline interface 3878 * and the ioa_is_dead check can be removed 3879 */ 3880 if (unlikely(ioa_cfg->ioa_is_dead || !res)) { 3881 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 3882 scsi_cmd->result = (DID_NO_CONNECT << 16); 3883 scsi_cmd->scsi_done(scsi_cmd); 3884 return 0; 3885 } 3886 3887 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3888 ioarcb = &ipr_cmd->ioarcb; 3889 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 3890 3891 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 3892 ipr_cmd->scsi_cmd = scsi_cmd; 3893 ioarcb->res_handle = res->cfgte.res_handle; 3894 ipr_cmd->done = ipr_scsi_done; 3895 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 3896 3897 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 3898 if (scsi_cmd->underflow == 0) 3899 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 3900 3901 if (res->needs_sync_complete) { 3902 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 3903 res->needs_sync_complete = 0; 3904 } 3905 3906 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 3907 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 3908 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 3909 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); 3910 } 3911 3912 if (scsi_cmd->cmnd[0] >= 0xC0 && 3913 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) 3914 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 3915 3916 if (ipr_is_ioa_resource(res) && scsi_cmd->cmnd[0] == MODE_SELECT) 3917 rc = ipr_save_ioafp_mode_select(ioa_cfg, scsi_cmd); 3918 3919 if (likely(rc == 0)) 3920 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 3921 3922 if (likely(rc == 0)) { 3923 mb(); 3924 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 3925 ioa_cfg->regs.ioarrin_reg); 3926 } else { 3927 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3928 return SCSI_MLQUEUE_HOST_BUSY; 3929 } 3930 3931 return 0; 3932} 3933 3934/** 3935 * ipr_info - Get information about the card/driver 3936 * @scsi_host: scsi host struct 3937 * 3938 * Return value: 3939 * pointer to buffer with description string 3940 **/ 3941static const char * ipr_ioa_info(struct Scsi_Host *host) 3942{ 3943 static char buffer[512]; 3944 struct ipr_ioa_cfg *ioa_cfg; 3945 unsigned long lock_flags = 0; 3946 3947 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 3948 3949 spin_lock_irqsave(host->host_lock, lock_flags); 3950 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 3951 spin_unlock_irqrestore(host->host_lock, lock_flags); 3952 3953 return buffer; 3954} 3955 3956static struct scsi_host_template driver_template = { 3957 .module = THIS_MODULE, 3958 .name = "IPR", 3959 .info = ipr_ioa_info, 3960 .queuecommand = ipr_queuecommand, 3961 .eh_abort_handler = ipr_eh_abort, 3962 .eh_device_reset_handler = ipr_eh_dev_reset, 3963 .eh_host_reset_handler = ipr_eh_host_reset, 3964 .slave_alloc = ipr_slave_alloc, 3965 .slave_configure = ipr_slave_configure, 3966 .slave_destroy = ipr_slave_destroy, 3967 .change_queue_depth = ipr_change_queue_depth, 3968 .change_queue_type = ipr_change_queue_type, 3969 .bios_param = ipr_biosparam, 3970 .can_queue = IPR_MAX_COMMANDS, 3971 .this_id = -1, 3972 .sg_tablesize = IPR_MAX_SGLIST, 3973 .max_sectors = IPR_IOA_MAX_SECTORS, 3974 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 3975 .use_clustering = ENABLE_CLUSTERING, 3976 .shost_attrs = ipr_ioa_attrs, 3977 .sdev_attrs = ipr_dev_attrs, 3978 .proc_name = IPR_NAME 3979}; 3980 3981#ifdef CONFIG_PPC_PSERIES 3982static const u16 ipr_blocked_processors[] = { 3983 PV_NORTHSTAR, 3984 PV_PULSAR, 3985 PV_POWER4, 3986 PV_ICESTAR, 3987 PV_SSTAR, 3988 PV_POWER4p, 3989 PV_630, 3990 PV_630p 3991}; 3992 3993/** 3994 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 3995 * @ioa_cfg: ioa cfg struct 3996 * 3997 * Adapters that use Gemstone revision < 3.1 do not work reliably on 3998 * certain pSeries hardware. This function determines if the given 3999 * adapter is in one of these confgurations or not. 4000 * 4001 * Return value: 4002 * 1 if adapter is not supported / 0 if adapter is supported 4003 **/ 4004static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 4005{ 4006 u8 rev_id; 4007 int i; 4008 4009 if (ioa_cfg->type == 0x5702) { 4010 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID, 4011 &rev_id) == PCIBIOS_SUCCESSFUL) { 4012 if (rev_id < 4) { 4013 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ 4014 if (__is_processor(ipr_blocked_processors[i])) 4015 return 1; 4016 } 4017 } 4018 } 4019 } 4020 return 0; 4021} 4022#else 4023#define ipr_invalid_adapter(ioa_cfg) 0 4024#endif 4025 4026/** 4027 * ipr_ioa_bringdown_done - IOA bring down completion. 4028 * @ipr_cmd: ipr command struct 4029 * 4030 * This function processes the completion of an adapter bring down. 4031 * It wakes any reset sleepers. 4032 * 4033 * Return value: 4034 * IPR_RC_JOB_RETURN 4035 **/ 4036static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 4037{ 4038 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4039 4040 ENTER; 4041 ioa_cfg->in_reset_reload = 0; 4042 ioa_cfg->reset_retries = 0; 4043 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4044 wake_up_all(&ioa_cfg->reset_wait_q); 4045 4046 spin_unlock_irq(ioa_cfg->host->host_lock); 4047 scsi_unblock_requests(ioa_cfg->host); 4048 spin_lock_irq(ioa_cfg->host->host_lock); 4049 LEAVE; 4050 4051 return IPR_RC_JOB_RETURN; 4052} 4053 4054/** 4055 * ipr_ioa_reset_done - IOA reset completion. 4056 * @ipr_cmd: ipr command struct 4057 * 4058 * This function processes the completion of an adapter reset. 4059 * It schedules any necessary mid-layer add/removes and 4060 * wakes any reset sleepers. 4061 * 4062 * Return value: 4063 * IPR_RC_JOB_RETURN 4064 **/ 4065static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 4066{ 4067 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4068 struct ipr_resource_entry *res; 4069 struct ipr_hostrcb *hostrcb, *temp; 4070 int i = 0; 4071 4072 ENTER; 4073 ioa_cfg->in_reset_reload = 0; 4074 ioa_cfg->allow_cmds = 1; 4075 ioa_cfg->reset_cmd = NULL; 4076 4077 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4078 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { 4079 ipr_trace; 4080 break; 4081 } 4082 } 4083 schedule_work(&ioa_cfg->work_q); 4084 4085 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { 4086 list_del(&hostrcb->queue); 4087 if (i++ < IPR_NUM_LOG_HCAMS) 4088 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 4089 else 4090 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 4091 } 4092 4093 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 4094 4095 ioa_cfg->reset_retries = 0; 4096 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4097 wake_up_all(&ioa_cfg->reset_wait_q); 4098 4099 spin_unlock_irq(ioa_cfg->host->host_lock); 4100 scsi_unblock_requests(ioa_cfg->host); 4101 spin_lock_irq(ioa_cfg->host->host_lock); 4102 4103 if (!ioa_cfg->allow_cmds) 4104 scsi_block_requests(ioa_cfg->host); 4105 4106 LEAVE; 4107 return IPR_RC_JOB_RETURN; 4108} 4109 4110/** 4111 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 4112 * @supported_dev: supported device struct 4113 * @vpids: vendor product id struct 4114 * 4115 * Return value: 4116 * none 4117 **/ 4118static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 4119 struct ipr_std_inq_vpids *vpids) 4120{ 4121 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 4122 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 4123 supported_dev->num_records = 1; 4124 supported_dev->data_length = 4125 cpu_to_be16(sizeof(struct ipr_supported_device)); 4126 supported_dev->reserved = 0; 4127} 4128 4129/** 4130 * ipr_set_supported_devs - Send Set Supported Devices for a device 4131 * @ipr_cmd: ipr command struct 4132 * 4133 * This function send a Set Supported Devices to the adapter 4134 * 4135 * Return value: 4136 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 4137 **/ 4138static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 4139{ 4140 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4141 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 4142 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4143 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4144 struct ipr_resource_entry *res = ipr_cmd->u.res; 4145 4146 ipr_cmd->job_step = ipr_ioa_reset_done; 4147 4148 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 4149 if (!ipr_is_af_dasd_device(res)) 4150 continue; 4151 4152 ipr_cmd->u.res = res; 4153 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids); 4154 4155 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 4156 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4157 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4158 4159 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 4160 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 4161 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 4162 4163 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | 4164 sizeof(struct ipr_supported_device)); 4165 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma + 4166 offsetof(struct ipr_misc_cbs, supp_dev)); 4167 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4168 ioarcb->write_data_transfer_length = 4169 cpu_to_be32(sizeof(struct ipr_supported_device)); 4170 4171 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 4172 IPR_SET_SUP_DEVICE_TIMEOUT); 4173 4174 ipr_cmd->job_step = ipr_set_supported_devs; 4175 return IPR_RC_JOB_RETURN; 4176 } 4177 4178 return IPR_RC_JOB_CONTINUE; 4179} 4180 4181/** 4182 * ipr_get_mode_page - Locate specified mode page 4183 * @mode_pages: mode page buffer 4184 * @page_code: page code to find 4185 * @len: minimum required length for mode page 4186 * 4187 * Return value: 4188 * pointer to mode page / NULL on failure 4189 **/ 4190static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 4191 u32 page_code, u32 len) 4192{ 4193 struct ipr_mode_page_hdr *mode_hdr; 4194 u32 page_length; 4195 u32 length; 4196 4197 if (!mode_pages || (mode_pages->hdr.length == 0)) 4198 return NULL; 4199 4200 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 4201 mode_hdr = (struct ipr_mode_page_hdr *) 4202 (mode_pages->data + mode_pages->hdr.block_desc_len); 4203 4204 while (length) { 4205 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 4206 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 4207 return mode_hdr; 4208 break; 4209 } else { 4210 page_length = (sizeof(struct ipr_mode_page_hdr) + 4211 mode_hdr->page_length); 4212 length -= page_length; 4213 mode_hdr = (struct ipr_mode_page_hdr *) 4214 ((unsigned long)mode_hdr + page_length); 4215 } 4216 } 4217 return NULL; 4218} 4219 4220/** 4221 * ipr_check_term_power - Check for term power errors 4222 * @ioa_cfg: ioa config struct 4223 * @mode_pages: IOAFP mode pages buffer 4224 * 4225 * Check the IOAFP's mode page 28 for term power errors 4226 * 4227 * Return value: 4228 * nothing 4229 **/ 4230static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 4231 struct ipr_mode_pages *mode_pages) 4232{ 4233 int i; 4234 int entry_length; 4235 struct ipr_dev_bus_entry *bus; 4236 struct ipr_mode_page28 *mode_page; 4237 4238 mode_page = ipr_get_mode_page(mode_pages, 0x28, 4239 sizeof(struct ipr_mode_page28)); 4240 4241 entry_length = mode_page->entry_length; 4242 4243 bus = mode_page->bus; 4244 4245 for (i = 0; i < mode_page->num_entries; i++) { 4246 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 4247 dev_err(&ioa_cfg->pdev->dev, 4248 "Term power is absent on scsi bus %d\n", 4249 bus->res_addr.bus); 4250 } 4251 4252 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 4253 } 4254} 4255 4256/** 4257 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 4258 * @ioa_cfg: ioa config struct 4259 * 4260 * Looks through the config table checking for SES devices. If 4261 * the SES device is in the SES table indicating a maximum SCSI 4262 * bus speed, the speed is limited for the bus. 4263 * 4264 * Return value: 4265 * none 4266 **/ 4267static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 4268{ 4269 u32 max_xfer_rate; 4270 int i; 4271 4272 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 4273 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 4274 ioa_cfg->bus_attr[i].bus_width); 4275 4276 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 4277 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 4278 } 4279} 4280 4281/** 4282 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 4283 * @ioa_cfg: ioa config struct 4284 * @mode_pages: mode page 28 buffer 4285 * 4286 * Updates mode page 28 based on driver configuration 4287 * 4288 * Return value: 4289 * none 4290 **/ 4291static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 4292 struct ipr_mode_pages *mode_pages) 4293{ 4294 int i, entry_length; 4295 struct ipr_dev_bus_entry *bus; 4296 struct ipr_bus_attributes *bus_attr; 4297 struct ipr_mode_page28 *mode_page; 4298 4299 mode_page = ipr_get_mode_page(mode_pages, 0x28, 4300 sizeof(struct ipr_mode_page28)); 4301 4302 entry_length = mode_page->entry_length; 4303 4304 /* Loop for each device bus entry */ 4305 for (i = 0, bus = mode_page->bus; 4306 i < mode_page->num_entries; 4307 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 4308 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 4309 dev_err(&ioa_cfg->pdev->dev, 4310 "Invalid resource address reported: 0x%08X\n", 4311 IPR_GET_PHYS_LOC(bus->res_addr)); 4312 continue; 4313 } 4314 4315 bus_attr = &ioa_cfg->bus_attr[i]; 4316 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 4317 bus->bus_width = bus_attr->bus_width; 4318 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 4319 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 4320 if (bus_attr->qas_enabled) 4321 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 4322 else 4323 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 4324 } 4325} 4326 4327/** 4328 * ipr_build_mode_select - Build a mode select command 4329 * @ipr_cmd: ipr command struct 4330 * @res_handle: resource handle to send command to 4331 * @parm: Byte 2 of Mode Sense command 4332 * @dma_addr: DMA buffer address 4333 * @xfer_len: data transfer length 4334 * 4335 * Return value: 4336 * none 4337 **/ 4338static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 4339 __be32 res_handle, u8 parm, u32 dma_addr, 4340 u8 xfer_len) 4341{ 4342 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4343 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4344 4345 ioarcb->res_handle = res_handle; 4346 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 4347 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4348 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 4349 ioarcb->cmd_pkt.cdb[1] = parm; 4350 ioarcb->cmd_pkt.cdb[4] = xfer_len; 4351 4352 ioadl->flags_and_data_len = 4353 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len); 4354 ioadl->address = cpu_to_be32(dma_addr); 4355 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4356 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len); 4357} 4358 4359/** 4360 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 4361 * @ipr_cmd: ipr command struct 4362 * 4363 * This function sets up the SCSI bus attributes and sends 4364 * a Mode Select for Page 28 to activate them. 4365 * 4366 * Return value: 4367 * IPR_RC_JOB_RETURN 4368 **/ 4369static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 4370{ 4371 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4372 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 4373 int length; 4374 4375 ENTER; 4376 if (ioa_cfg->saved_mode_pages) { 4377 memcpy(mode_pages, ioa_cfg->saved_mode_pages, 4378 ioa_cfg->saved_mode_page_len); 4379 length = ioa_cfg->saved_mode_page_len; 4380 } else { 4381 ipr_scsi_bus_speed_limit(ioa_cfg); 4382 ipr_check_term_power(ioa_cfg, mode_pages); 4383 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 4384 length = mode_pages->hdr.length + 1; 4385 mode_pages->hdr.length = 0; 4386 } 4387 4388 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 4389 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 4390 length); 4391 4392 ipr_cmd->job_step = ipr_set_supported_devs; 4393 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 4394 struct ipr_resource_entry, queue); 4395 4396 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4397 4398 LEAVE; 4399 return IPR_RC_JOB_RETURN; 4400} 4401 4402/** 4403 * ipr_build_mode_sense - Builds a mode sense command 4404 * @ipr_cmd: ipr command struct 4405 * @res: resource entry struct 4406 * @parm: Byte 2 of mode sense command 4407 * @dma_addr: DMA address of mode sense buffer 4408 * @xfer_len: Size of DMA buffer 4409 * 4410 * Return value: 4411 * none 4412 **/ 4413static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 4414 __be32 res_handle, 4415 u8 parm, u32 dma_addr, u8 xfer_len) 4416{ 4417 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4418 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4419 4420 ioarcb->res_handle = res_handle; 4421 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 4422 ioarcb->cmd_pkt.cdb[2] = parm; 4423 ioarcb->cmd_pkt.cdb[4] = xfer_len; 4424 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 4425 4426 ioadl->flags_and_data_len = 4427 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 4428 ioadl->address = cpu_to_be32(dma_addr); 4429 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4430 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 4431} 4432 4433/** 4434 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 4435 * @ipr_cmd: ipr command struct 4436 * 4437 * This function send a Page 28 mode sense to the IOA to 4438 * retrieve SCSI bus attributes. 4439 * 4440 * Return value: 4441 * IPR_RC_JOB_RETURN 4442 **/ 4443static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 4444{ 4445 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4446 4447 ENTER; 4448 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 4449 0x28, ioa_cfg->vpd_cbs_dma + 4450 offsetof(struct ipr_misc_cbs, mode_pages), 4451 sizeof(struct ipr_mode_pages)); 4452 4453 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 4454 4455 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4456 4457 LEAVE; 4458 return IPR_RC_JOB_RETURN; 4459} 4460 4461/** 4462 * ipr_init_res_table - Initialize the resource table 4463 * @ipr_cmd: ipr command struct 4464 * 4465 * This function looks through the existing resource table, comparing 4466 * it with the config table. This function will take care of old/new 4467 * devices and schedule adding/removing them from the mid-layer 4468 * as appropriate. 4469 * 4470 * Return value: 4471 * IPR_RC_JOB_CONTINUE 4472 **/ 4473static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 4474{ 4475 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4476 struct ipr_resource_entry *res, *temp; 4477 struct ipr_config_table_entry *cfgte; 4478 int found, i; 4479 LIST_HEAD(old_res); 4480 4481 ENTER; 4482 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ) 4483 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 4484 4485 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 4486 list_move_tail(&res->queue, &old_res); 4487 4488 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) { 4489 cfgte = &ioa_cfg->cfg_table->dev[i]; 4490 found = 0; 4491 4492 list_for_each_entry_safe(res, temp, &old_res, queue) { 4493 if (!memcmp(&res->cfgte.res_addr, 4494 &cfgte->res_addr, sizeof(cfgte->res_addr))) { 4495 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 4496 found = 1; 4497 break; 4498 } 4499 } 4500 4501 if (!found) { 4502 if (list_empty(&ioa_cfg->free_res_q)) { 4503 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 4504 break; 4505 } 4506 4507 found = 1; 4508 res = list_entry(ioa_cfg->free_res_q.next, 4509 struct ipr_resource_entry, queue); 4510 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 4511 ipr_init_res_entry(res); 4512 res->add_to_ml = 1; 4513 } 4514 4515 if (found) 4516 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 4517 } 4518 4519 list_for_each_entry_safe(res, temp, &old_res, queue) { 4520 if (res->sdev) { 4521 res->del_from_ml = 1; 4522 res->sdev->hostdata = NULL; 4523 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 4524 } else { 4525 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 4526 } 4527 } 4528 4529 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 4530 4531 LEAVE; 4532 return IPR_RC_JOB_CONTINUE; 4533} 4534 4535/** 4536 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 4537 * @ipr_cmd: ipr command struct 4538 * 4539 * This function sends a Query IOA Configuration command 4540 * to the adapter to retrieve the IOA configuration table. 4541 * 4542 * Return value: 4543 * IPR_RC_JOB_RETURN 4544 **/ 4545static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 4546{ 4547 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4548 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4549 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4550 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 4551 4552 ENTER; 4553 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 4554 ucode_vpd->major_release, ucode_vpd->card_type, 4555 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 4556 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4557 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 4558 4559 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 4560 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff; 4561 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff; 4562 4563 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4564 ioarcb->read_data_transfer_length = 4565 cpu_to_be32(sizeof(struct ipr_config_table)); 4566 4567 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma); 4568 ioadl->flags_and_data_len = 4569 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table)); 4570 4571 ipr_cmd->job_step = ipr_init_res_table; 4572 4573 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4574 4575 LEAVE; 4576 return IPR_RC_JOB_RETURN; 4577} 4578 4579/** 4580 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 4581 * @ipr_cmd: ipr command struct 4582 * 4583 * This utility function sends an inquiry to the adapter. 4584 * 4585 * Return value: 4586 * none 4587 **/ 4588static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 4589 u32 dma_addr, u8 xfer_len) 4590{ 4591 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4592 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4593 4594 ENTER; 4595 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 4596 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 4597 4598 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 4599 ioarcb->cmd_pkt.cdb[1] = flags; 4600 ioarcb->cmd_pkt.cdb[2] = page; 4601 ioarcb->cmd_pkt.cdb[4] = xfer_len; 4602 4603 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4604 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 4605 4606 ioadl->address = cpu_to_be32(dma_addr); 4607 ioadl->flags_and_data_len = 4608 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 4609 4610 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4611 LEAVE; 4612} 4613 4614/** 4615 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 4616 * @ipr_cmd: ipr command struct 4617 * 4618 * This function sends a Page 3 inquiry to the adapter 4619 * to retrieve software VPD information. 4620 * 4621 * Return value: 4622 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 4623 **/ 4624static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 4625{ 4626 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4627 char type[5]; 4628 4629 ENTER; 4630 4631 /* Grab the type out of the VPD and store it away */ 4632 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 4633 type[4] = '\0'; 4634 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 4635 4636 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 4637 4638 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 4639 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 4640 sizeof(struct ipr_inquiry_page3)); 4641 4642 LEAVE; 4643 return IPR_RC_JOB_RETURN; 4644} 4645 4646/** 4647 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 4648 * @ipr_cmd: ipr command struct 4649 * 4650 * This function sends a standard inquiry to the adapter. 4651 * 4652 * Return value: 4653 * IPR_RC_JOB_RETURN 4654 **/ 4655static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 4656{ 4657 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4658 4659 ENTER; 4660 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 4661 4662 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 4663 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 4664 sizeof(struct ipr_ioa_vpd)); 4665 4666 LEAVE; 4667 return IPR_RC_JOB_RETURN; 4668} 4669 4670/** 4671 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ. 4672 * @ipr_cmd: ipr command struct 4673 * 4674 * This function send an Identify Host Request Response Queue 4675 * command to establish the HRRQ with the adapter. 4676 * 4677 * Return value: 4678 * IPR_RC_JOB_RETURN 4679 **/ 4680static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd) 4681{ 4682 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4683 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4684 4685 ENTER; 4686 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 4687 4688 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 4689 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 4690 4691 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4692 ioarcb->cmd_pkt.cdb[2] = 4693 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff; 4694 ioarcb->cmd_pkt.cdb[3] = 4695 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff; 4696 ioarcb->cmd_pkt.cdb[4] = 4697 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff; 4698 ioarcb->cmd_pkt.cdb[5] = 4699 ((u32) ioa_cfg->host_rrq_dma) & 0xff; 4700 ioarcb->cmd_pkt.cdb[7] = 4701 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; 4702 ioarcb->cmd_pkt.cdb[8] = 4703 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; 4704 4705 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 4706 4707 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4708 4709 LEAVE; 4710 return IPR_RC_JOB_RETURN; 4711} 4712 4713/** 4714 * ipr_reset_timer_done - Adapter reset timer function 4715 * @ipr_cmd: ipr command struct 4716 * 4717 * Description: This function is used in adapter reset processing 4718 * for timing events. If the reset_cmd pointer in the IOA 4719 * config struct is not this adapter's we are doing nested 4720 * resets and fail_all_ops will take care of freeing the 4721 * command block. 4722 * 4723 * Return value: 4724 * none 4725 **/ 4726static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 4727{ 4728 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4729 unsigned long lock_flags = 0; 4730 4731 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4732 4733 if (ioa_cfg->reset_cmd == ipr_cmd) { 4734 list_del(&ipr_cmd->queue); 4735 ipr_cmd->done(ipr_cmd); 4736 } 4737 4738 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4739} 4740 4741/** 4742 * ipr_reset_start_timer - Start a timer for adapter reset job 4743 * @ipr_cmd: ipr command struct 4744 * @timeout: timeout value 4745 * 4746 * Description: This function is used in adapter reset processing 4747 * for timing events. If the reset_cmd pointer in the IOA 4748 * config struct is not this adapter's we are doing nested 4749 * resets and fail_all_ops will take care of freeing the 4750 * command block. 4751 * 4752 * Return value: 4753 * none 4754 **/ 4755static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 4756 unsigned long timeout) 4757{ 4758 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 4759 ipr_cmd->done = ipr_reset_ioa_job; 4760 4761 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 4762 ipr_cmd->timer.expires = jiffies + timeout; 4763 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 4764 add_timer(&ipr_cmd->timer); 4765} 4766 4767/** 4768 * ipr_init_ioa_mem - Initialize ioa_cfg control block 4769 * @ioa_cfg: ioa cfg struct 4770 * 4771 * Return value: 4772 * nothing 4773 **/ 4774static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 4775{ 4776 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); 4777 4778 /* Initialize Host RRQ pointers */ 4779 ioa_cfg->hrrq_start = ioa_cfg->host_rrq; 4780 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; 4781 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 4782 ioa_cfg->toggle_bit = 1; 4783 4784 /* Zero out config table */ 4785 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table)); 4786} 4787 4788/** 4789 * ipr_reset_enable_ioa - Enable the IOA following a reset. 4790 * @ipr_cmd: ipr command struct 4791 * 4792 * This function reinitializes some control blocks and 4793 * enables destructive diagnostics on the adapter. 4794 * 4795 * Return value: 4796 * IPR_RC_JOB_RETURN 4797 **/ 4798static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 4799{ 4800 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4801 volatile u32 int_reg; 4802 4803 ENTER; 4804 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq; 4805 ipr_init_ioa_mem(ioa_cfg); 4806 4807 ioa_cfg->allow_interrupts = 1; 4808 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 4809 4810 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 4811 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 4812 ioa_cfg->regs.clr_interrupt_mask_reg); 4813 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 4814 return IPR_RC_JOB_CONTINUE; 4815 } 4816 4817 /* Enable destructive diagnostics on IOA */ 4818 writel(IPR_DOORBELL, ioa_cfg->regs.set_uproc_interrupt_reg); 4819 4820 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg); 4821 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 4822 4823 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 4824 4825 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 4826 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ); 4827 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 4828 ipr_cmd->done = ipr_reset_ioa_job; 4829 add_timer(&ipr_cmd->timer); 4830 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 4831 4832 LEAVE; 4833 return IPR_RC_JOB_RETURN; 4834} 4835 4836/** 4837 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 4838 * @ipr_cmd: ipr command struct 4839 * 4840 * This function is invoked when an adapter dump has run out 4841 * of processing time. 4842 * 4843 * Return value: 4844 * IPR_RC_JOB_CONTINUE 4845 **/ 4846static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 4847{ 4848 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4849 4850 if (ioa_cfg->sdt_state == GET_DUMP) 4851 ioa_cfg->sdt_state = ABORT_DUMP; 4852 4853 ipr_cmd->job_step = ipr_reset_alert; 4854 4855 return IPR_RC_JOB_CONTINUE; 4856} 4857 4858/** 4859 * ipr_unit_check_no_data - Log a unit check/no data error log 4860 * @ioa_cfg: ioa config struct 4861 * 4862 * Logs an error indicating the adapter unit checked, but for some 4863 * reason, we were unable to fetch the unit check buffer. 4864 * 4865 * Return value: 4866 * nothing 4867 **/ 4868static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 4869{ 4870 ioa_cfg->errors_logged++; 4871 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 4872} 4873 4874/** 4875 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 4876 * @ioa_cfg: ioa config struct 4877 * 4878 * Fetches the unit check buffer from the adapter by clocking the data 4879 * through the mailbox register. 4880 * 4881 * Return value: 4882 * nothing 4883 **/ 4884static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 4885{ 4886 unsigned long mailbox; 4887 struct ipr_hostrcb *hostrcb; 4888 struct ipr_uc_sdt sdt; 4889 int rc, length; 4890 4891 mailbox = readl(ioa_cfg->ioa_mailbox); 4892 4893 if (!ipr_sdt_is_fmt2(mailbox)) { 4894 ipr_unit_check_no_data(ioa_cfg); 4895 return; 4896 } 4897 4898 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 4899 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 4900 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 4901 4902 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) || 4903 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) { 4904 ipr_unit_check_no_data(ioa_cfg); 4905 return; 4906 } 4907 4908 /* Find length of the first sdt entry (UC buffer) */ 4909 length = (be32_to_cpu(sdt.entry[0].end_offset) - 4910 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK; 4911 4912 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 4913 struct ipr_hostrcb, queue); 4914 list_del(&hostrcb->queue); 4915 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 4916 4917 rc = ipr_get_ldump_data_section(ioa_cfg, 4918 be32_to_cpu(sdt.entry[0].bar_str_offset), 4919 (__be32 *)&hostrcb->hcam, 4920 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 4921 4922 if (!rc) 4923 ipr_handle_log_data(ioa_cfg, hostrcb); 4924 else 4925 ipr_unit_check_no_data(ioa_cfg); 4926 4927 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 4928} 4929 4930/** 4931 * ipr_reset_restore_cfg_space - Restore PCI config space. 4932 * @ipr_cmd: ipr command struct 4933 * 4934 * Description: This function restores the saved PCI config space of 4935 * the adapter, fails all outstanding ops back to the callers, and 4936 * fetches the dump/unit check if applicable to this reset. 4937 * 4938 * Return value: 4939 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 4940 **/ 4941static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 4942{ 4943 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4944 int rc; 4945 4946 ENTER; 4947 pci_unblock_user_cfg_access(ioa_cfg->pdev); 4948 rc = pci_restore_state(ioa_cfg->pdev); 4949 4950 if (rc != PCIBIOS_SUCCESSFUL) { 4951 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 4952 return IPR_RC_JOB_CONTINUE; 4953 } 4954 4955 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 4956 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 4957 return IPR_RC_JOB_CONTINUE; 4958 } 4959 4960 ipr_fail_all_ops(ioa_cfg); 4961 4962 if (ioa_cfg->ioa_unit_checked) { 4963 ioa_cfg->ioa_unit_checked = 0; 4964 ipr_get_unit_check_buffer(ioa_cfg); 4965 ipr_cmd->job_step = ipr_reset_alert; 4966 ipr_reset_start_timer(ipr_cmd, 0); 4967 return IPR_RC_JOB_RETURN; 4968 } 4969 4970 if (ioa_cfg->in_ioa_bringdown) { 4971 ipr_cmd->job_step = ipr_ioa_bringdown_done; 4972 } else { 4973 ipr_cmd->job_step = ipr_reset_enable_ioa; 4974 4975 if (GET_DUMP == ioa_cfg->sdt_state) { 4976 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); 4977 ipr_cmd->job_step = ipr_reset_wait_for_dump; 4978 schedule_work(&ioa_cfg->work_q); 4979 return IPR_RC_JOB_RETURN; 4980 } 4981 } 4982 4983 ENTER; 4984 return IPR_RC_JOB_CONTINUE; 4985} 4986 4987/** 4988 * ipr_reset_start_bist - Run BIST on the adapter. 4989 * @ipr_cmd: ipr command struct 4990 * 4991 * Description: This function runs BIST on the adapter, then delays 2 seconds. 4992 * 4993 * Return value: 4994 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 4995 **/ 4996static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 4997{ 4998 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4999 int rc; 5000 5001 ENTER; 5002 pci_block_user_cfg_access(ioa_cfg->pdev); 5003 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 5004 5005 if (rc != PCIBIOS_SUCCESSFUL) { 5006 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 5007 rc = IPR_RC_JOB_CONTINUE; 5008 } else { 5009 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 5010 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 5011 rc = IPR_RC_JOB_RETURN; 5012 } 5013 5014 LEAVE; 5015 return rc; 5016} 5017 5018/** 5019 * ipr_reset_allowed - Query whether or not IOA can be reset 5020 * @ioa_cfg: ioa config struct 5021 * 5022 * Return value: 5023 * 0 if reset not allowed / non-zero if reset is allowed 5024 **/ 5025static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 5026{ 5027 volatile u32 temp_reg; 5028 5029 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 5030 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 5031} 5032 5033/** 5034 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 5035 * @ipr_cmd: ipr command struct 5036 * 5037 * Description: This function waits for adapter permission to run BIST, 5038 * then runs BIST. If the adapter does not give permission after a 5039 * reasonable time, we will reset the adapter anyway. The impact of 5040 * resetting the adapter without warning the adapter is the risk of 5041 * losing the persistent error log on the adapter. If the adapter is 5042 * reset while it is writing to the flash on the adapter, the flash 5043 * segment will have bad ECC and be zeroed. 5044 * 5045 * Return value: 5046 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5047 **/ 5048static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 5049{ 5050 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5051 int rc = IPR_RC_JOB_RETURN; 5052 5053 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 5054 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 5055 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 5056 } else { 5057 ipr_cmd->job_step = ipr_reset_start_bist; 5058 rc = IPR_RC_JOB_CONTINUE; 5059 } 5060 5061 return rc; 5062} 5063 5064/** 5065 * ipr_reset_alert_part2 - Alert the adapter of a pending reset 5066 * @ipr_cmd: ipr command struct 5067 * 5068 * Description: This function alerts the adapter that it will be reset. 5069 * If memory space is not currently enabled, proceed directly 5070 * to running BIST on the adapter. The timer must always be started 5071 * so we guarantee we do not run BIST from ipr_isr. 5072 * 5073 * Return value: 5074 * IPR_RC_JOB_RETURN 5075 **/ 5076static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 5077{ 5078 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5079 u16 cmd_reg; 5080 int rc; 5081 5082 ENTER; 5083 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 5084 5085 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 5086 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 5087 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg); 5088 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 5089 } else { 5090 ipr_cmd->job_step = ipr_reset_start_bist; 5091 } 5092 5093 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 5094 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 5095 5096 LEAVE; 5097 return IPR_RC_JOB_RETURN; 5098} 5099 5100/** 5101 * ipr_reset_ucode_download_done - Microcode download completion 5102 * @ipr_cmd: ipr command struct 5103 * 5104 * Description: This function unmaps the microcode download buffer. 5105 * 5106 * Return value: 5107 * IPR_RC_JOB_CONTINUE 5108 **/ 5109static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 5110{ 5111 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5112 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 5113 5114 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, 5115 sglist->num_sg, DMA_TO_DEVICE); 5116 5117 ipr_cmd->job_step = ipr_reset_alert; 5118 return IPR_RC_JOB_CONTINUE; 5119} 5120 5121/** 5122 * ipr_reset_ucode_download - Download microcode to the adapter 5123 * @ipr_cmd: ipr command struct 5124 * 5125 * Description: This function checks to see if it there is microcode 5126 * to download to the adapter. If there is, a download is performed. 5127 * 5128 * Return value: 5129 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5130 **/ 5131static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 5132{ 5133 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5134 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 5135 5136 ENTER; 5137 ipr_cmd->job_step = ipr_reset_alert; 5138 5139 if (!sglist) 5140 return IPR_RC_JOB_CONTINUE; 5141 5142 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5143 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5144 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 5145 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 5146 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 5147 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 5148 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 5149 5150 if (ipr_map_ucode_buffer(ipr_cmd, sglist, sglist->buffer_len)) { 5151 dev_err(&ioa_cfg->pdev->dev, 5152 "Failed to map microcode download buffer\n"); 5153 return IPR_RC_JOB_CONTINUE; 5154 } 5155 5156 ipr_cmd->job_step = ipr_reset_ucode_download_done; 5157 5158 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 5159 IPR_WRITE_BUFFER_TIMEOUT); 5160 5161 LEAVE; 5162 return IPR_RC_JOB_RETURN; 5163} 5164 5165/** 5166 * ipr_reset_shutdown_ioa - Shutdown the adapter 5167 * @ipr_cmd: ipr command struct 5168 * 5169 * Description: This function issues an adapter shutdown of the 5170 * specified type to the specified adapter as part of the 5171 * adapter reset job. 5172 * 5173 * Return value: 5174 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5175 **/ 5176static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 5177{ 5178 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5179 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 5180 unsigned long timeout; 5181 int rc = IPR_RC_JOB_CONTINUE; 5182 5183 ENTER; 5184 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { 5185 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5186 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5187 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 5188 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 5189 5190 if (shutdown_type == IPR_SHUTDOWN_ABBREV) 5191 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 5192 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 5193 timeout = IPR_INTERNAL_TIMEOUT; 5194 else 5195 timeout = IPR_SHUTDOWN_TIMEOUT; 5196 5197 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 5198 5199 rc = IPR_RC_JOB_RETURN; 5200 ipr_cmd->job_step = ipr_reset_ucode_download; 5201 } else 5202 ipr_cmd->job_step = ipr_reset_alert; 5203 5204 LEAVE; 5205 return rc; 5206} 5207 5208/** 5209 * ipr_reset_ioa_job - Adapter reset job 5210 * @ipr_cmd: ipr command struct 5211 * 5212 * Description: This function is the job router for the adapter reset job. 5213 * 5214 * Return value: 5215 * none 5216 **/ 5217static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 5218{ 5219 u32 rc, ioasc; 5220 unsigned long scratch = ipr_cmd->u.scratch; 5221 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5222 5223 do { 5224 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5225 5226 if (ioa_cfg->reset_cmd != ipr_cmd) { 5227 /* 5228 * We are doing nested adapter resets and this is 5229 * not the current reset job. 5230 */ 5231 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5232 return; 5233 } 5234 5235 if (IPR_IOASC_SENSE_KEY(ioasc)) { 5236 dev_err(&ioa_cfg->pdev->dev, 5237 "0x%02X failed with IOASC: 0x%08X\n", 5238 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 5239 5240 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5241 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5242 return; 5243 } 5244 5245 ipr_reinit_ipr_cmnd(ipr_cmd); 5246 ipr_cmd->u.scratch = scratch; 5247 rc = ipr_cmd->job_step(ipr_cmd); 5248 } while(rc == IPR_RC_JOB_CONTINUE); 5249} 5250 5251/** 5252 * _ipr_initiate_ioa_reset - Initiate an adapter reset 5253 * @ioa_cfg: ioa config struct 5254 * @job_step: first job step of reset job 5255 * @shutdown_type: shutdown type 5256 * 5257 * Description: This function will initiate the reset of the given adapter 5258 * starting at the selected job step. 5259 * If the caller needs to wait on the completion of the reset, 5260 * the caller must sleep on the reset_wait_q. 5261 * 5262 * Return value: 5263 * none 5264 **/ 5265static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 5266 int (*job_step) (struct ipr_cmnd *), 5267 enum ipr_shutdown_type shutdown_type) 5268{ 5269 struct ipr_cmnd *ipr_cmd; 5270 5271 ioa_cfg->in_reset_reload = 1; 5272 ioa_cfg->allow_cmds = 0; 5273 scsi_block_requests(ioa_cfg->host); 5274 5275 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5276 ioa_cfg->reset_cmd = ipr_cmd; 5277 ipr_cmd->job_step = job_step; 5278 ipr_cmd->u.shutdown_type = shutdown_type; 5279 5280 ipr_reset_ioa_job(ipr_cmd); 5281} 5282 5283/** 5284 * ipr_initiate_ioa_reset - Initiate an adapter reset 5285 * @ioa_cfg: ioa config struct 5286 * @shutdown_type: shutdown type 5287 * 5288 * Description: This function will initiate the reset of the given adapter. 5289 * If the caller needs to wait on the completion of the reset, 5290 * the caller must sleep on the reset_wait_q. 5291 * 5292 * Return value: 5293 * none 5294 **/ 5295static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 5296 enum ipr_shutdown_type shutdown_type) 5297{ 5298 if (ioa_cfg->ioa_is_dead) 5299 return; 5300 5301 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) 5302 ioa_cfg->sdt_state = ABORT_DUMP; 5303 5304 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 5305 dev_err(&ioa_cfg->pdev->dev, 5306 "IOA taken offline - error recovery failed\n"); 5307 5308 ioa_cfg->reset_retries = 0; 5309 ioa_cfg->ioa_is_dead = 1; 5310 5311 if (ioa_cfg->in_ioa_bringdown) { 5312 ioa_cfg->reset_cmd = NULL; 5313 ioa_cfg->in_reset_reload = 0; 5314 ipr_fail_all_ops(ioa_cfg); 5315 wake_up_all(&ioa_cfg->reset_wait_q); 5316 5317 spin_unlock_irq(ioa_cfg->host->host_lock); 5318 scsi_unblock_requests(ioa_cfg->host); 5319 spin_lock_irq(ioa_cfg->host->host_lock); 5320 return; 5321 } else { 5322 ioa_cfg->in_ioa_bringdown = 1; 5323 shutdown_type = IPR_SHUTDOWN_NONE; 5324 } 5325 } 5326 5327 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 5328 shutdown_type); 5329} 5330 5331/** 5332 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 5333 * @ioa_cfg: ioa cfg struct 5334 * 5335 * Description: This is the second phase of adapter intialization 5336 * This function takes care of initilizing the adapter to the point 5337 * where it can accept new commands. 5338 5339 * Return value: 5340 * 0 on sucess / -EIO on failure 5341 **/ 5342static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 5343{ 5344 int rc = 0; 5345 unsigned long host_lock_flags = 0; 5346 5347 ENTER; 5348 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 5349 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 5350 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, IPR_SHUTDOWN_NONE); 5351 5352 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 5353 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5354 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 5355 5356 if (ioa_cfg->ioa_is_dead) { 5357 rc = -EIO; 5358 } else if (ipr_invalid_adapter(ioa_cfg)) { 5359 if (!ipr_testmode) 5360 rc = -EIO; 5361 5362 dev_err(&ioa_cfg->pdev->dev, 5363 "Adapter not supported in this hardware configuration.\n"); 5364 } 5365 5366 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 5367 5368 LEAVE; 5369 return rc; 5370} 5371 5372/** 5373 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 5374 * @ioa_cfg: ioa config struct 5375 * 5376 * Return value: 5377 * none 5378 **/ 5379static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 5380{ 5381 int i; 5382 5383 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 5384 if (ioa_cfg->ipr_cmnd_list[i]) 5385 pci_pool_free(ioa_cfg->ipr_cmd_pool, 5386 ioa_cfg->ipr_cmnd_list[i], 5387 ioa_cfg->ipr_cmnd_list_dma[i]); 5388 5389 ioa_cfg->ipr_cmnd_list[i] = NULL; 5390 } 5391 5392 if (ioa_cfg->ipr_cmd_pool) 5393 pci_pool_destroy (ioa_cfg->ipr_cmd_pool); 5394 5395 ioa_cfg->ipr_cmd_pool = NULL; 5396} 5397 5398/** 5399 * ipr_free_mem - Frees memory allocated for an adapter 5400 * @ioa_cfg: ioa cfg struct 5401 * 5402 * Return value: 5403 * nothing 5404 **/ 5405static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 5406{ 5407 int i; 5408 5409 kfree(ioa_cfg->res_entries); 5410 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), 5411 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 5412 ipr_free_cmd_blks(ioa_cfg); 5413 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 5414 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 5415 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table), 5416 ioa_cfg->cfg_table, 5417 ioa_cfg->cfg_table_dma); 5418 5419 for (i = 0; i < IPR_NUM_HCAMS; i++) { 5420 pci_free_consistent(ioa_cfg->pdev, 5421 sizeof(struct ipr_hostrcb), 5422 ioa_cfg->hostrcb[i], 5423 ioa_cfg->hostrcb_dma[i]); 5424 } 5425 5426 ipr_free_dump(ioa_cfg); 5427 kfree(ioa_cfg->saved_mode_pages); 5428 kfree(ioa_cfg->trace); 5429} 5430 5431/** 5432 * ipr_free_all_resources - Free all allocated resources for an adapter. 5433 * @ipr_cmd: ipr command struct 5434 * 5435 * This function frees all allocated resources for the 5436 * specified adapter. 5437 * 5438 * Return value: 5439 * none 5440 **/ 5441static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 5442{ 5443 struct pci_dev *pdev = ioa_cfg->pdev; 5444 5445 ENTER; 5446 free_irq(pdev->irq, ioa_cfg); 5447 iounmap(ioa_cfg->hdw_dma_regs); 5448 pci_release_regions(pdev); 5449 ipr_free_mem(ioa_cfg); 5450 scsi_host_put(ioa_cfg->host); 5451 pci_disable_device(pdev); 5452 LEAVE; 5453} 5454 5455/** 5456 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 5457 * @ioa_cfg: ioa config struct 5458 * 5459 * Return value: 5460 * 0 on success / -ENOMEM on allocation failure 5461 **/ 5462static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 5463{ 5464 struct ipr_cmnd *ipr_cmd; 5465 struct ipr_ioarcb *ioarcb; 5466 dma_addr_t dma_addr; 5467 int i; 5468 5469 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, 5470 sizeof(struct ipr_cmnd), 8, 0); 5471 5472 if (!ioa_cfg->ipr_cmd_pool) 5473 return -ENOMEM; 5474 5475 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 5476 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr); 5477 5478 if (!ipr_cmd) { 5479 ipr_free_cmd_blks(ioa_cfg); 5480 return -ENOMEM; 5481 } 5482 5483 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 5484 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 5485 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 5486 5487 ioarcb = &ipr_cmd->ioarcb; 5488 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 5489 ioarcb->host_response_handle = cpu_to_be32(i << 2); 5490 ioarcb->write_ioadl_addr = 5491 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); 5492 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 5493 ioarcb->ioasa_host_pci_addr = 5494 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa)); 5495 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 5496 ipr_cmd->cmd_index = i; 5497 ipr_cmd->ioa_cfg = ioa_cfg; 5498 ipr_cmd->sense_buffer_dma = dma_addr + 5499 offsetof(struct ipr_cmnd, sense_buffer); 5500 5501 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5502 } 5503 5504 return 0; 5505} 5506 5507/** 5508 * ipr_alloc_mem - Allocate memory for an adapter 5509 * @ioa_cfg: ioa config struct 5510 * 5511 * Return value: 5512 * 0 on success / non-zero for error 5513 **/ 5514static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 5515{ 5516 struct pci_dev *pdev = ioa_cfg->pdev; 5517 int i, rc = -ENOMEM; 5518 5519 ENTER; 5520 ioa_cfg->res_entries = kmalloc(sizeof(struct ipr_resource_entry) * 5521 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL); 5522 5523 if (!ioa_cfg->res_entries) 5524 goto out; 5525 5526 memset(ioa_cfg->res_entries, 0, 5527 sizeof(struct ipr_resource_entry) * IPR_MAX_PHYSICAL_DEVS); 5528 5529 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++) 5530 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 5531 5532 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, 5533 sizeof(struct ipr_misc_cbs), 5534 &ioa_cfg->vpd_cbs_dma); 5535 5536 if (!ioa_cfg->vpd_cbs) 5537 goto out_free_res_entries; 5538 5539 if (ipr_alloc_cmd_blks(ioa_cfg)) 5540 goto out_free_vpd_cbs; 5541 5542 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, 5543 sizeof(u32) * IPR_NUM_CMD_BLKS, 5544 &ioa_cfg->host_rrq_dma); 5545 5546 if (!ioa_cfg->host_rrq) 5547 goto out_ipr_free_cmd_blocks; 5548 5549 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev, 5550 sizeof(struct ipr_config_table), 5551 &ioa_cfg->cfg_table_dma); 5552 5553 if (!ioa_cfg->cfg_table) 5554 goto out_free_host_rrq; 5555 5556 for (i = 0; i < IPR_NUM_HCAMS; i++) { 5557 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, 5558 sizeof(struct ipr_hostrcb), 5559 &ioa_cfg->hostrcb_dma[i]); 5560 5561 if (!ioa_cfg->hostrcb[i]) 5562 goto out_free_hostrcb_dma; 5563 5564 ioa_cfg->hostrcb[i]->hostrcb_dma = 5565 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 5566 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 5567 } 5568 5569 ioa_cfg->trace = kmalloc(sizeof(struct ipr_trace_entry) * 5570 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 5571 5572 if (!ioa_cfg->trace) 5573 goto out_free_hostrcb_dma; 5574 5575 memset(ioa_cfg->trace, 0, 5576 sizeof(struct ipr_trace_entry) * IPR_NUM_TRACE_ENTRIES); 5577 5578 rc = 0; 5579out: 5580 LEAVE; 5581 return rc; 5582 5583out_free_hostrcb_dma: 5584 while (i-- > 0) { 5585 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), 5586 ioa_cfg->hostrcb[i], 5587 ioa_cfg->hostrcb_dma[i]); 5588 } 5589 pci_free_consistent(pdev, sizeof(struct ipr_config_table), 5590 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma); 5591out_free_host_rrq: 5592 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 5593 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 5594out_ipr_free_cmd_blocks: 5595 ipr_free_cmd_blks(ioa_cfg); 5596out_free_vpd_cbs: 5597 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), 5598 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 5599out_free_res_entries: 5600 kfree(ioa_cfg->res_entries); 5601 goto out; 5602} 5603 5604/** 5605 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 5606 * @ioa_cfg: ioa config struct 5607 * 5608 * Return value: 5609 * none 5610 **/ 5611static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 5612{ 5613 int i; 5614 5615 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 5616 ioa_cfg->bus_attr[i].bus = i; 5617 ioa_cfg->bus_attr[i].qas_enabled = 0; 5618 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 5619 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 5620 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 5621 else 5622 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 5623 } 5624} 5625 5626/** 5627 * ipr_init_ioa_cfg - Initialize IOA config struct 5628 * @ioa_cfg: ioa config struct 5629 * @host: scsi host struct 5630 * @pdev: PCI dev struct 5631 * 5632 * Return value: 5633 * none 5634 **/ 5635static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 5636 struct Scsi_Host *host, struct pci_dev *pdev) 5637{ 5638 const struct ipr_interrupt_offsets *p; 5639 struct ipr_interrupts *t; 5640 void __iomem *base; 5641 5642 ioa_cfg->host = host; 5643 ioa_cfg->pdev = pdev; 5644 ioa_cfg->log_level = ipr_log_level; 5645 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 5646 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 5647 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); 5648 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); 5649 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 5650 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 5651 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 5652 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 5653 5654 INIT_LIST_HEAD(&ioa_cfg->free_q); 5655 INIT_LIST_HEAD(&ioa_cfg->pending_q); 5656 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 5657 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 5658 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 5659 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 5660 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg); 5661 init_waitqueue_head(&ioa_cfg->reset_wait_q); 5662 ioa_cfg->sdt_state = INACTIVE; 5663 5664 ipr_initialize_bus_attr(ioa_cfg); 5665 5666 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 5667 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 5668 host->max_channel = IPR_MAX_BUS_TO_SCAN; 5669 host->unique_id = host->host_no; 5670 host->max_cmd_len = IPR_MAX_CDB_LEN; 5671 pci_set_drvdata(pdev, ioa_cfg); 5672 5673 p = &ioa_cfg->chip_cfg->regs; 5674 t = &ioa_cfg->regs; 5675 base = ioa_cfg->hdw_dma_regs; 5676 5677 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 5678 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 5679 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 5680 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 5681 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 5682 t->ioarrin_reg = base + p->ioarrin_reg; 5683 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 5684 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 5685 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 5686} 5687 5688/** 5689 * ipr_get_chip_cfg - Find adapter chip configuration 5690 * @dev_id: PCI device id struct 5691 * 5692 * Return value: 5693 * ptr to chip config on success / NULL on failure 5694 **/ 5695static const struct ipr_chip_cfg_t * __devinit 5696ipr_get_chip_cfg(const struct pci_device_id *dev_id) 5697{ 5698 int i; 5699 5700 if (dev_id->driver_data) 5701 return (const struct ipr_chip_cfg_t *)dev_id->driver_data; 5702 5703 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 5704 if (ipr_chip[i].vendor == dev_id->vendor && 5705 ipr_chip[i].device == dev_id->device) 5706 return ipr_chip[i].cfg; 5707 return NULL; 5708} 5709 5710/** 5711 * ipr_probe_ioa - Allocates memory and does first stage of initialization 5712 * @pdev: PCI device struct 5713 * @dev_id: PCI device id struct 5714 * 5715 * Return value: 5716 * 0 on success / non-zero on failure 5717 **/ 5718static int __devinit ipr_probe_ioa(struct pci_dev *pdev, 5719 const struct pci_device_id *dev_id) 5720{ 5721 struct ipr_ioa_cfg *ioa_cfg; 5722 struct Scsi_Host *host; 5723 unsigned long ipr_regs_pci; 5724 void __iomem *ipr_regs; 5725 u32 rc = PCIBIOS_SUCCESSFUL; 5726 5727 ENTER; 5728 5729 if ((rc = pci_enable_device(pdev))) { 5730 dev_err(&pdev->dev, "Cannot enable adapter\n"); 5731 goto out; 5732 } 5733 5734 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 5735 5736 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 5737 5738 if (!host) { 5739 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 5740 rc = -ENOMEM; 5741 goto out_disable; 5742 } 5743 5744 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 5745 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 5746 5747 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id); 5748 5749 if (!ioa_cfg->chip_cfg) { 5750 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 5751 dev_id->vendor, dev_id->device); 5752 goto out_scsi_host_put; 5753 } 5754 5755 ipr_regs_pci = pci_resource_start(pdev, 0); 5756 5757 rc = pci_request_regions(pdev, IPR_NAME); 5758 if (rc < 0) { 5759 dev_err(&pdev->dev, 5760 "Couldn't register memory range of registers\n"); 5761 goto out_scsi_host_put; 5762 } 5763 5764 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0)); 5765 5766 if (!ipr_regs) { 5767 dev_err(&pdev->dev, 5768 "Couldn't map memory range of registers\n"); 5769 rc = -ENOMEM; 5770 goto out_release_regions; 5771 } 5772 5773 ioa_cfg->hdw_dma_regs = ipr_regs; 5774 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 5775 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 5776 5777 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 5778 5779 pci_set_master(pdev); 5780 5781 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 5782 if (rc < 0) { 5783 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); 5784 goto cleanup_nomem; 5785 } 5786 5787 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 5788 ioa_cfg->chip_cfg->cache_line_size); 5789 5790 if (rc != PCIBIOS_SUCCESSFUL) { 5791 dev_err(&pdev->dev, "Write of cache line size failed\n"); 5792 rc = -EIO; 5793 goto cleanup_nomem; 5794 } 5795 5796 /* Save away PCI config space for use following IOA reset */ 5797 rc = pci_save_state(pdev); 5798 5799 if (rc != PCIBIOS_SUCCESSFUL) { 5800 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 5801 rc = -EIO; 5802 goto cleanup_nomem; 5803 } 5804 5805 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 5806 goto cleanup_nomem; 5807 5808 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 5809 goto cleanup_nomem; 5810 5811 rc = ipr_alloc_mem(ioa_cfg); 5812 if (rc < 0) { 5813 dev_err(&pdev->dev, 5814 "Couldn't allocate enough memory for device driver!\n"); 5815 goto cleanup_nomem; 5816 } 5817 5818 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 5819 rc = request_irq(pdev->irq, ipr_isr, SA_SHIRQ, IPR_NAME, ioa_cfg); 5820 5821 if (rc) { 5822 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 5823 pdev->irq, rc); 5824 goto cleanup_nolog; 5825 } 5826 5827 spin_lock(&ipr_driver_lock); 5828 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 5829 spin_unlock(&ipr_driver_lock); 5830 5831 LEAVE; 5832out: 5833 return rc; 5834 5835cleanup_nolog: 5836 ipr_free_mem(ioa_cfg); 5837cleanup_nomem: 5838 iounmap(ipr_regs); 5839out_release_regions: 5840 pci_release_regions(pdev); 5841out_scsi_host_put: 5842 scsi_host_put(host); 5843out_disable: 5844 pci_disable_device(pdev); 5845 goto out; 5846} 5847 5848/** 5849 * ipr_scan_vsets - Scans for VSET devices 5850 * @ioa_cfg: ioa config struct 5851 * 5852 * Description: Since the VSET resources do not follow SAM in that we can have 5853 * sparse LUNs with no LUN 0, we have to scan for these ourselves. 5854 * 5855 * Return value: 5856 * none 5857 **/ 5858static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) 5859{ 5860 int target, lun; 5861 5862 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) 5863 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) 5864 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); 5865} 5866 5867/** 5868 * ipr_initiate_ioa_bringdown - Bring down an adapter 5869 * @ioa_cfg: ioa config struct 5870 * @shutdown_type: shutdown type 5871 * 5872 * Description: This function will initiate bringing down the adapter. 5873 * This consists of issuing an IOA shutdown to the adapter 5874 * to flush the cache, and running BIST. 5875 * If the caller needs to wait on the completion of the reset, 5876 * the caller must sleep on the reset_wait_q. 5877 * 5878 * Return value: 5879 * none 5880 **/ 5881static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 5882 enum ipr_shutdown_type shutdown_type) 5883{ 5884 ENTER; 5885 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 5886 ioa_cfg->sdt_state = ABORT_DUMP; 5887 ioa_cfg->reset_retries = 0; 5888 ioa_cfg->in_ioa_bringdown = 1; 5889 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 5890 LEAVE; 5891} 5892 5893/** 5894 * __ipr_remove - Remove a single adapter 5895 * @pdev: pci device struct 5896 * 5897 * Adapter hot plug remove entry point. 5898 * 5899 * Return value: 5900 * none 5901 **/ 5902static void __ipr_remove(struct pci_dev *pdev) 5903{ 5904 unsigned long host_lock_flags = 0; 5905 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 5906 ENTER; 5907 5908 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 5909 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 5910 5911 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 5912 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5913 flush_scheduled_work(); 5914 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 5915 5916 spin_lock(&ipr_driver_lock); 5917 list_del(&ioa_cfg->queue); 5918 spin_unlock(&ipr_driver_lock); 5919 5920 if (ioa_cfg->sdt_state == ABORT_DUMP) 5921 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 5922 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 5923 5924 ipr_free_all_resources(ioa_cfg); 5925 5926 LEAVE; 5927} 5928 5929/** 5930 * ipr_remove - IOA hot plug remove entry point 5931 * @pdev: pci device struct 5932 * 5933 * Adapter hot plug remove entry point. 5934 * 5935 * Return value: 5936 * none 5937 **/ 5938static void ipr_remove(struct pci_dev *pdev) 5939{ 5940 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 5941 5942 ENTER; 5943 5944 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 5945 &ipr_trace_attr); 5946 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj, 5947 &ipr_dump_attr); 5948 scsi_remove_host(ioa_cfg->host); 5949 5950 __ipr_remove(pdev); 5951 5952 LEAVE; 5953} 5954 5955/** 5956 * ipr_probe - Adapter hot plug add entry point 5957 * 5958 * Return value: 5959 * 0 on success / non-zero on failure 5960 **/ 5961static int __devinit ipr_probe(struct pci_dev *pdev, 5962 const struct pci_device_id *dev_id) 5963{ 5964 struct ipr_ioa_cfg *ioa_cfg; 5965 int rc; 5966 5967 rc = ipr_probe_ioa(pdev, dev_id); 5968 5969 if (rc) 5970 return rc; 5971 5972 ioa_cfg = pci_get_drvdata(pdev); 5973 rc = ipr_probe_ioa_part2(ioa_cfg); 5974 5975 if (rc) { 5976 __ipr_remove(pdev); 5977 return rc; 5978 } 5979 5980 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 5981 5982 if (rc) { 5983 __ipr_remove(pdev); 5984 return rc; 5985 } 5986 5987 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj, 5988 &ipr_trace_attr); 5989 5990 if (rc) { 5991 scsi_remove_host(ioa_cfg->host); 5992 __ipr_remove(pdev); 5993 return rc; 5994 } 5995 5996 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj, 5997 &ipr_dump_attr); 5998 5999 if (rc) { 6000 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 6001 &ipr_trace_attr); 6002 scsi_remove_host(ioa_cfg->host); 6003 __ipr_remove(pdev); 6004 return rc; 6005 } 6006 6007 scsi_scan_host(ioa_cfg->host); 6008 ipr_scan_vsets(ioa_cfg); 6009 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); 6010 ioa_cfg->allow_ml_add_del = 1; 6011 ioa_cfg->host->max_channel = IPR_VSET_BUS; 6012 schedule_work(&ioa_cfg->work_q); 6013 return 0; 6014} 6015 6016/** 6017 * ipr_shutdown - Shutdown handler. 6018 * @pdev: pci device struct 6019 * 6020 * This function is invoked upon system shutdown/reboot. It will issue 6021 * an adapter shutdown to the adapter to flush the write cache. 6022 * 6023 * Return value: 6024 * none 6025 **/ 6026static void ipr_shutdown(struct pci_dev *pdev) 6027{ 6028 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6029 unsigned long lock_flags = 0; 6030 6031 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6032 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 6033 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6034 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6035} 6036 6037static struct pci_device_id ipr_pci_table[] __devinitdata = { 6038 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 6039 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 6040 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6041 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 6042 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 6043 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6044 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 6045 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 6046 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6047 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 6048 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 6049 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6050 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 6051 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 6052 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6053 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 6054 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 6055 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6056 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 6057 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 6058 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6059 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 6060 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 6061 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, 6062 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 6063 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 6064 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, 6065 { } 6066}; 6067MODULE_DEVICE_TABLE(pci, ipr_pci_table); 6068 6069static struct pci_driver ipr_driver = { 6070 .name = IPR_NAME, 6071 .id_table = ipr_pci_table, 6072 .probe = ipr_probe, 6073 .remove = ipr_remove, 6074 .shutdown = ipr_shutdown, 6075}; 6076 6077/** 6078 * ipr_init - Module entry point 6079 * 6080 * Return value: 6081 * 0 on success / negative value on failure 6082 **/ 6083static int __init ipr_init(void) 6084{ 6085 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 6086 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 6087 6088 return pci_module_init(&ipr_driver); 6089} 6090 6091/** 6092 * ipr_exit - Module unload 6093 * 6094 * Module unload entry point. 6095 * 6096 * Return value: 6097 * none 6098 **/ 6099static void __exit ipr_exit(void) 6100{ 6101 pci_unregister_driver(&ipr_driver); 6102} 6103 6104module_init(ipr_init); 6105module_exit(ipr_exit); 6106