1 /* 2 * ipr.c -- driver for IBM Power Linux RAID adapters 3 * 4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation 5 * 6 * Copyright (C) 2003, 2004 IBM Corporation 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23 24 /* 25 * Notes: 26 * 27 * This driver is used to control the following SCSI adapters: 28 * 29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B 30 * 31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter 32 * PCI-X Dual Channel Ultra 320 SCSI Adapter 33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card 34 * Embedded SCSI adapter on p615 and p655 systems 35 * 36 * Supported Hardware Features: 37 * - Ultra 320 SCSI controller 38 * - PCI-X host interface 39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine 40 * - Non-Volatile Write Cache 41 * - Supports attachment of non-RAID disks, tape, and optical devices 42 * - RAID Levels 0, 5, 10 43 * - Hot spare 44 * - Background Parity Checking 45 * - Background Data Scrubbing 46 * - Ability to increase the capacity of an existing RAID 5 disk array 47 * by adding disks 48 * 49 * Driver Features: 50 * - Tagged command queuing 51 * - Adapter microcode download 52 * - PCI hot plug 53 * - SCSI device hot plug 54 * 55 */ 56 57 #include <linux/fs.h> 58 #include <linux/init.h> 59 #include <linux/types.h> 60 #include <linux/errno.h> 61 #include <linux/kernel.h> 62 #include <linux/ioport.h> 63 #include <linux/delay.h> 64 #include <linux/pci.h> 65 #include <linux/wait.h> 66 #include <linux/spinlock.h> 67 #include <linux/sched.h> 68 #include <linux/interrupt.h> 69 #include <linux/blkdev.h> 70 #include <linux/firmware.h> 71 #include <linux/module.h> 72 #include <linux/moduleparam.h> 73 #include <linux/libata.h> 74 #include <asm/io.h> 75 #include <asm/irq.h> 76 #include <asm/processor.h> 77 #include <scsi/scsi.h> 78 #include <scsi/scsi_host.h> 79 #include <scsi/scsi_tcq.h> 80 #include <scsi/scsi_eh.h> 81 #include <scsi/scsi_cmnd.h> 82 #include "ipr.h" 83 84 /* 85 * Global Data 86 */ 87 static LIST_HEAD(ipr_ioa_head); 88 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL; 89 static unsigned int ipr_max_speed = 1; 90 static int ipr_testmode = 0; 91 static unsigned int ipr_fastfail = 0; 92 static unsigned int ipr_transop_timeout = 0; 93 static unsigned int ipr_enable_cache = 1; 94 static unsigned int ipr_debug = 0; 95 static unsigned int ipr_dual_ioa_raid = 1; 96 static DEFINE_SPINLOCK(ipr_driver_lock); 97 98 /* This table describes the differences between DMA controller chips */ 99 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { 100 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */ 101 .mailbox = 0x0042C, 102 .cache_line_size = 0x20, 103 { 104 .set_interrupt_mask_reg = 0x0022C, 105 .clr_interrupt_mask_reg = 0x00230, 106 .sense_interrupt_mask_reg = 0x0022C, 107 .clr_interrupt_reg = 0x00228, 108 .sense_interrupt_reg = 0x00224, 109 .ioarrin_reg = 0x00404, 110 .sense_uproc_interrupt_reg = 0x00214, 111 .set_uproc_interrupt_reg = 0x00214, 112 .clr_uproc_interrupt_reg = 0x00218 113 } 114 }, 115 { /* Snipe and Scamp */ 116 .mailbox = 0x0052C, 117 .cache_line_size = 0x20, 118 { 119 .set_interrupt_mask_reg = 0x00288, 120 .clr_interrupt_mask_reg = 0x0028C, 121 .sense_interrupt_mask_reg = 0x00288, 122 .clr_interrupt_reg = 0x00284, 123 .sense_interrupt_reg = 0x00280, 124 .ioarrin_reg = 0x00504, 125 .sense_uproc_interrupt_reg = 0x00290, 126 .set_uproc_interrupt_reg = 0x00290, 127 .clr_uproc_interrupt_reg = 0x00294 128 } 129 }, 130 }; 131 132 static const struct ipr_chip_t ipr_chip[] = { 133 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] }, 134 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] }, 135 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] }, 136 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] }, 137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &ipr_chip_cfg[0] }, 138 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] }, 139 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] } 140 }; 141 142 static int ipr_max_bus_speeds [] = { 143 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE 144 }; 145 146 MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); 147 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); 148 module_param_named(max_speed, ipr_max_speed, uint, 0); 149 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); 150 module_param_named(log_level, ipr_log_level, uint, 0); 151 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); 152 module_param_named(testmode, ipr_testmode, int, 0); 153 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); 154 module_param_named(fastfail, ipr_fastfail, int, 0); 155 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); 156 module_param_named(transop_timeout, ipr_transop_timeout, int, 0); 157 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); 158 module_param_named(enable_cache, ipr_enable_cache, int, 0); 159 MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)"); 160 module_param_named(debug, ipr_debug, int, 0); 161 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)"); 162 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0); 163 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)"); 164 MODULE_LICENSE("GPL"); 165 MODULE_VERSION(IPR_DRIVER_VERSION); 166 167 /* A constant array of IOASCs/URCs/Error Messages */ 168 static const 169 struct ipr_error_table_t ipr_error_table[] = { 170 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL, 171 "8155: An unknown error was received"}, 172 {0x00330000, 0, 0, 173 "Soft underlength error"}, 174 {0x005A0000, 0, 0, 175 "Command to be cancelled not found"}, 176 {0x00808000, 0, 0, 177 "Qualified success"}, 178 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL, 179 "FFFE: Soft device bus error recovered by the IOA"}, 180 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL, 181 "4101: Soft device bus fabric error"}, 182 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL, 183 "FFF9: Device sector reassign successful"}, 184 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL, 185 "FFF7: Media error recovered by device rewrite procedures"}, 186 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL, 187 "7001: IOA sector reassignment successful"}, 188 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL, 189 "FFF9: Soft media error. Sector reassignment recommended"}, 190 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL, 191 "FFF7: Media error recovered by IOA rewrite procedures"}, 192 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL, 193 "FF3D: Soft PCI bus error recovered by the IOA"}, 194 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL, 195 "FFF6: Device hardware error recovered by the IOA"}, 196 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL, 197 "FFF6: Device hardware error recovered by the device"}, 198 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL, 199 "FF3D: Soft IOA error recovered by the IOA"}, 200 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL, 201 "FFFA: Undefined device response recovered by the IOA"}, 202 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL, 203 "FFF6: Device bus error, message or command phase"}, 204 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL, 205 "FFFE: Task Management Function failed"}, 206 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL, 207 "FFF6: Failure prediction threshold exceeded"}, 208 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL, 209 "8009: Impending cache battery pack failure"}, 210 {0x02040400, 0, 0, 211 "34FF: Disk device format in progress"}, 212 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL, 213 "9070: IOA requested reset"}, 214 {0x023F0000, 0, 0, 215 "Synchronization required"}, 216 {0x024E0000, 0, 0, 217 "No ready, IOA shutdown"}, 218 {0x025A0000, 0, 0, 219 "Not ready, IOA has been shutdown"}, 220 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL, 221 "3020: Storage subsystem configuration error"}, 222 {0x03110B00, 0, 0, 223 "FFF5: Medium error, data unreadable, recommend reassign"}, 224 {0x03110C00, 0, 0, 225 "7000: Medium error, data unreadable, do not reassign"}, 226 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL, 227 "FFF3: Disk media format bad"}, 228 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL, 229 "3002: Addressed device failed to respond to selection"}, 230 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL, 231 "3100: Device bus error"}, 232 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL, 233 "3109: IOA timed out a device command"}, 234 {0x04088000, 0, 0, 235 "3120: SCSI bus is not operational"}, 236 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL, 237 "4100: Hard device bus fabric error"}, 238 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL, 239 "9000: IOA reserved area data check"}, 240 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL, 241 "9001: IOA reserved area invalid data pattern"}, 242 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL, 243 "9002: IOA reserved area LRC error"}, 244 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL, 245 "102E: Out of alternate sectors for disk storage"}, 246 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL, 247 "FFF4: Data transfer underlength error"}, 248 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL, 249 "FFF4: Data transfer overlength error"}, 250 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL, 251 "3400: Logical unit failure"}, 252 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL, 253 "FFF4: Device microcode is corrupt"}, 254 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL, 255 "8150: PCI bus error"}, 256 {0x04430000, 1, 0, 257 "Unsupported device bus message received"}, 258 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL, 259 "FFF4: Disk device problem"}, 260 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL, 261 "8150: Permanent IOA failure"}, 262 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL, 263 "3010: Disk device returned wrong response to IOA"}, 264 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL, 265 "8151: IOA microcode error"}, 266 {0x04448500, 0, 0, 267 "Device bus status error"}, 268 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL, 269 "8157: IOA error requiring IOA reset to recover"}, 270 {0x04448700, 0, 0, 271 "ATA device status error"}, 272 {0x04490000, 0, 0, 273 "Message reject received from the device"}, 274 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL, 275 "8008: A permanent cache battery pack failure occurred"}, 276 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL, 277 "9090: Disk unit has been modified after the last known status"}, 278 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL, 279 "9081: IOA detected device error"}, 280 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL, 281 "9082: IOA detected device error"}, 282 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL, 283 "3110: Device bus error, message or command phase"}, 284 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL, 285 "3110: SAS Command / Task Management Function failed"}, 286 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL, 287 "9091: Incorrect hardware configuration change has been detected"}, 288 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL, 289 "9073: Invalid multi-adapter configuration"}, 290 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL, 291 "4010: Incorrect connection between cascaded expanders"}, 292 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL, 293 "4020: Connections exceed IOA design limits"}, 294 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL, 295 "4030: Incorrect multipath connection"}, 296 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL, 297 "4110: Unsupported enclosure function"}, 298 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL, 299 "FFF4: Command to logical unit failed"}, 300 {0x05240000, 1, 0, 301 "Illegal request, invalid request type or request packet"}, 302 {0x05250000, 0, 0, 303 "Illegal request, invalid resource handle"}, 304 {0x05258000, 0, 0, 305 "Illegal request, commands not allowed to this device"}, 306 {0x05258100, 0, 0, 307 "Illegal request, command not allowed to a secondary adapter"}, 308 {0x05260000, 0, 0, 309 "Illegal request, invalid field in parameter list"}, 310 {0x05260100, 0, 0, 311 "Illegal request, parameter not supported"}, 312 {0x05260200, 0, 0, 313 "Illegal request, parameter value invalid"}, 314 {0x052C0000, 0, 0, 315 "Illegal request, command sequence error"}, 316 {0x052C8000, 1, 0, 317 "Illegal request, dual adapter support not enabled"}, 318 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL, 319 "9031: Array protection temporarily suspended, protection resuming"}, 320 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL, 321 "9040: Array protection temporarily suspended, protection resuming"}, 322 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL, 323 "3140: Device bus not ready to ready transition"}, 324 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL, 325 "FFFB: SCSI bus was reset"}, 326 {0x06290500, 0, 0, 327 "FFFE: SCSI bus transition to single ended"}, 328 {0x06290600, 0, 0, 329 "FFFE: SCSI bus transition to LVD"}, 330 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL, 331 "FFFB: SCSI bus was reset by another initiator"}, 332 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL, 333 "3029: A device replacement has occurred"}, 334 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL, 335 "9051: IOA cache data exists for a missing or failed device"}, 336 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL, 337 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"}, 338 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL, 339 "9025: Disk unit is not supported at its physical location"}, 340 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL, 341 "3020: IOA detected a SCSI bus configuration error"}, 342 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL, 343 "3150: SCSI bus configuration error"}, 344 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL, 345 "9074: Asymmetric advanced function disk configuration"}, 346 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL, 347 "4040: Incomplete multipath connection between IOA and enclosure"}, 348 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL, 349 "4041: Incomplete multipath connection between enclosure and device"}, 350 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL, 351 "9075: Incomplete multipath connection between IOA and remote IOA"}, 352 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL, 353 "9076: Configuration error, missing remote IOA"}, 354 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL, 355 "4050: Enclosure does not support a required multipath function"}, 356 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL, 357 "9041: Array protection temporarily suspended"}, 358 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL, 359 "9042: Corrupt array parity detected on specified device"}, 360 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL, 361 "9030: Array no longer protected due to missing or failed disk unit"}, 362 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL, 363 "9071: Link operational transition"}, 364 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL, 365 "9072: Link not operational transition"}, 366 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL, 367 "9032: Array exposed but still protected"}, 368 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1, 369 "70DD: Device forced failed by disrupt device command"}, 370 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL, 371 "4061: Multipath redundancy level got better"}, 372 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL, 373 "4060: Multipath redundancy level got worse"}, 374 {0x07270000, 0, 0, 375 "Failure due to other device"}, 376 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL, 377 "9008: IOA does not support functions expected by devices"}, 378 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL, 379 "9010: Cache data associated with attached devices cannot be found"}, 380 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL, 381 "9011: Cache data belongs to devices other than those attached"}, 382 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL, 383 "9020: Array missing 2 or more devices with only 1 device present"}, 384 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL, 385 "9021: Array missing 2 or more devices with 2 or more devices present"}, 386 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL, 387 "9022: Exposed array is missing a required device"}, 388 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL, 389 "9023: Array member(s) not at required physical locations"}, 390 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL, 391 "9024: Array not functional due to present hardware configuration"}, 392 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL, 393 "9026: Array not functional due to present hardware configuration"}, 394 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL, 395 "9027: Array is missing a device and parity is out of sync"}, 396 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL, 397 "9028: Maximum number of arrays already exist"}, 398 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL, 399 "9050: Required cache data cannot be located for a disk unit"}, 400 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL, 401 "9052: Cache data exists for a device that has been modified"}, 402 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL, 403 "9054: IOA resources not available due to previous problems"}, 404 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL, 405 "9092: Disk unit requires initialization before use"}, 406 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL, 407 "9029: Incorrect hardware configuration change has been detected"}, 408 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL, 409 "9060: One or more disk pairs are missing from an array"}, 410 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL, 411 "9061: One or more disks are missing from an array"}, 412 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL, 413 "9062: One or more disks are missing from an array"}, 414 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL, 415 "9063: Maximum number of functional arrays has been exceeded"}, 416 {0x0B260000, 0, 0, 417 "Aborted command, invalid descriptor"}, 418 {0x0B5A0000, 0, 0, 419 "Command terminated by host"} 420 }; 421 422 static const struct ipr_ses_table_entry ipr_ses_table[] = { 423 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, 424 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, 425 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ 426 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ 427 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ 428 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ 429 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, 430 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, 431 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 432 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 433 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, 434 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, 435 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } 436 }; 437 438 /* 439 * Function Prototypes 440 */ 441 static int ipr_reset_alert(struct ipr_cmnd *); 442 static void ipr_process_ccn(struct ipr_cmnd *); 443 static void ipr_process_error(struct ipr_cmnd *); 444 static void ipr_reset_ioa_job(struct ipr_cmnd *); 445 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, 446 enum ipr_shutdown_type); 447 448 #ifdef CONFIG_SCSI_IPR_TRACE 449 /** 450 * ipr_trc_hook - Add a trace entry to the driver trace 451 * @ipr_cmd: ipr command struct 452 * @type: trace type 453 * @add_data: additional data 454 * 455 * Return value: 456 * none 457 **/ 458 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, 459 u8 type, u32 add_data) 460 { 461 struct ipr_trace_entry *trace_entry; 462 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 463 464 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++]; 465 trace_entry->time = jiffies; 466 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; 467 trace_entry->type = type; 468 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command; 469 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff; 470 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; 471 trace_entry->u.add_data = add_data; 472 } 473 #else 474 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0) 475 #endif 476 477 /** 478 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse 479 * @ipr_cmd: ipr command struct 480 * 481 * Return value: 482 * none 483 **/ 484 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 485 { 486 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 487 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 488 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr); 489 490 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 491 ioarcb->write_data_transfer_length = 0; 492 ioarcb->read_data_transfer_length = 0; 493 ioarcb->write_ioadl_len = 0; 494 ioarcb->read_ioadl_len = 0; 495 ioarcb->write_ioadl_addr = 496 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); 497 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 498 ioasa->ioasc = 0; 499 ioasa->residual_data_len = 0; 500 ioasa->u.gata.status = 0; 501 502 ipr_cmd->scsi_cmd = NULL; 503 ipr_cmd->qc = NULL; 504 ipr_cmd->sense_buffer[0] = 0; 505 ipr_cmd->dma_use_sg = 0; 506 } 507 508 /** 509 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block 510 * @ipr_cmd: ipr command struct 511 * 512 * Return value: 513 * none 514 **/ 515 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 516 { 517 ipr_reinit_ipr_cmnd(ipr_cmd); 518 ipr_cmd->u.scratch = 0; 519 ipr_cmd->sibling = NULL; 520 init_timer(&ipr_cmd->timer); 521 } 522 523 /** 524 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block 525 * @ioa_cfg: ioa config struct 526 * 527 * Return value: 528 * pointer to ipr command struct 529 **/ 530 static 531 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) 532 { 533 struct ipr_cmnd *ipr_cmd; 534 535 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue); 536 list_del(&ipr_cmd->queue); 537 ipr_init_ipr_cmnd(ipr_cmd); 538 539 return ipr_cmd; 540 } 541 542 /** 543 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts 544 * @ioa_cfg: ioa config struct 545 * @clr_ints: interrupts to clear 546 * 547 * This function masks all interrupts on the adapter, then clears the 548 * interrupts specified in the mask 549 * 550 * Return value: 551 * none 552 **/ 553 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, 554 u32 clr_ints) 555 { 556 volatile u32 int_reg; 557 558 /* Stop new interrupts */ 559 ioa_cfg->allow_interrupts = 0; 560 561 /* Set interrupt mask to stop all new interrupts */ 562 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); 563 564 /* Clear any pending interrupts */ 565 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg); 566 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 567 } 568 569 /** 570 * ipr_save_pcix_cmd_reg - Save PCI-X command register 571 * @ioa_cfg: ioa config struct 572 * 573 * Return value: 574 * 0 on success / -EIO on failure 575 **/ 576 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 577 { 578 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 579 580 if (pcix_cmd_reg == 0) 581 return 0; 582 583 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 584 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 585 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 586 return -EIO; 587 } 588 589 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; 590 return 0; 591 } 592 593 /** 594 * ipr_set_pcix_cmd_reg - Setup PCI-X command register 595 * @ioa_cfg: ioa config struct 596 * 597 * Return value: 598 * 0 on success / -EIO on failure 599 **/ 600 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 601 { 602 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 603 604 if (pcix_cmd_reg) { 605 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 606 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 607 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); 608 return -EIO; 609 } 610 } 611 612 return 0; 613 } 614 615 /** 616 * ipr_sata_eh_done - done function for aborted SATA commands 617 * @ipr_cmd: ipr command struct 618 * 619 * This function is invoked for ops generated to SATA 620 * devices which are being aborted. 621 * 622 * Return value: 623 * none 624 **/ 625 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd) 626 { 627 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 628 struct ata_queued_cmd *qc = ipr_cmd->qc; 629 struct ipr_sata_port *sata_port = qc->ap->private_data; 630 631 qc->err_mask |= AC_ERR_OTHER; 632 sata_port->ioasa.status |= ATA_BUSY; 633 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 634 ata_qc_complete(qc); 635 } 636 637 /** 638 * ipr_scsi_eh_done - mid-layer done function for aborted ops 639 * @ipr_cmd: ipr command struct 640 * 641 * This function is invoked by the interrupt handler for 642 * ops generated by the SCSI mid-layer which are being aborted. 643 * 644 * Return value: 645 * none 646 **/ 647 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 648 { 649 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 650 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 651 652 scsi_cmd->result |= (DID_ERROR << 16); 653 654 scsi_dma_unmap(ipr_cmd->scsi_cmd); 655 scsi_cmd->scsi_done(scsi_cmd); 656 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 657 } 658 659 /** 660 * ipr_fail_all_ops - Fails all outstanding ops. 661 * @ioa_cfg: ioa config struct 662 * 663 * This function fails all outstanding ops. 664 * 665 * Return value: 666 * none 667 **/ 668 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) 669 { 670 struct ipr_cmnd *ipr_cmd, *temp; 671 672 ENTER; 673 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) { 674 list_del(&ipr_cmd->queue); 675 676 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); 677 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID); 678 679 if (ipr_cmd->scsi_cmd) 680 ipr_cmd->done = ipr_scsi_eh_done; 681 else if (ipr_cmd->qc) 682 ipr_cmd->done = ipr_sata_eh_done; 683 684 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET); 685 del_timer(&ipr_cmd->timer); 686 ipr_cmd->done(ipr_cmd); 687 } 688 689 LEAVE; 690 } 691 692 /** 693 * ipr_do_req - Send driver initiated requests. 694 * @ipr_cmd: ipr command struct 695 * @done: done function 696 * @timeout_func: timeout function 697 * @timeout: timeout value 698 * 699 * This function sends the specified command to the adapter with the 700 * timeout given. The done function is invoked on command completion. 701 * 702 * Return value: 703 * none 704 **/ 705 static void ipr_do_req(struct ipr_cmnd *ipr_cmd, 706 void (*done) (struct ipr_cmnd *), 707 void (*timeout_func) (struct ipr_cmnd *), u32 timeout) 708 { 709 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 710 711 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 712 713 ipr_cmd->done = done; 714 715 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 716 ipr_cmd->timer.expires = jiffies + timeout; 717 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func; 718 719 add_timer(&ipr_cmd->timer); 720 721 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); 722 723 mb(); 724 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 725 ioa_cfg->regs.ioarrin_reg); 726 } 727 728 /** 729 * ipr_internal_cmd_done - Op done function for an internally generated op. 730 * @ipr_cmd: ipr command struct 731 * 732 * This function is the op done function for an internally generated, 733 * blocking op. It simply wakes the sleeping thread. 734 * 735 * Return value: 736 * none 737 **/ 738 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) 739 { 740 if (ipr_cmd->sibling) 741 ipr_cmd->sibling = NULL; 742 else 743 complete(&ipr_cmd->completion); 744 } 745 746 /** 747 * ipr_send_blocking_cmd - Send command and sleep on its completion. 748 * @ipr_cmd: ipr command struct 749 * @timeout_func: function to invoke if command times out 750 * @timeout: timeout 751 * 752 * Return value: 753 * none 754 **/ 755 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, 756 void (*timeout_func) (struct ipr_cmnd *ipr_cmd), 757 u32 timeout) 758 { 759 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 760 761 init_completion(&ipr_cmd->completion); 762 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); 763 764 spin_unlock_irq(ioa_cfg->host->host_lock); 765 wait_for_completion(&ipr_cmd->completion); 766 spin_lock_irq(ioa_cfg->host->host_lock); 767 } 768 769 /** 770 * ipr_send_hcam - Send an HCAM to the adapter. 771 * @ioa_cfg: ioa config struct 772 * @type: HCAM type 773 * @hostrcb: hostrcb struct 774 * 775 * This function will send a Host Controlled Async command to the adapter. 776 * If HCAMs are currently not allowed to be issued to the adapter, it will 777 * place the hostrcb on the free queue. 778 * 779 * Return value: 780 * none 781 **/ 782 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, 783 struct ipr_hostrcb *hostrcb) 784 { 785 struct ipr_cmnd *ipr_cmd; 786 struct ipr_ioarcb *ioarcb; 787 788 if (ioa_cfg->allow_cmds) { 789 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 790 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 791 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); 792 793 ipr_cmd->u.hostrcb = hostrcb; 794 ioarcb = &ipr_cmd->ioarcb; 795 796 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 797 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; 798 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; 799 ioarcb->cmd_pkt.cdb[1] = type; 800 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; 801 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; 802 803 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam)); 804 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 805 ipr_cmd->ioadl[0].flags_and_data_len = 806 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam)); 807 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma); 808 809 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) 810 ipr_cmd->done = ipr_process_ccn; 811 else 812 ipr_cmd->done = ipr_process_error; 813 814 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); 815 816 mb(); 817 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 818 ioa_cfg->regs.ioarrin_reg); 819 } else { 820 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 821 } 822 } 823 824 /** 825 * ipr_init_res_entry - Initialize a resource entry struct. 826 * @res: resource entry struct 827 * 828 * Return value: 829 * none 830 **/ 831 static void ipr_init_res_entry(struct ipr_resource_entry *res) 832 { 833 res->needs_sync_complete = 0; 834 res->in_erp = 0; 835 res->add_to_ml = 0; 836 res->del_from_ml = 0; 837 res->resetting_device = 0; 838 res->sdev = NULL; 839 res->sata_port = NULL; 840 } 841 842 /** 843 * ipr_handle_config_change - Handle a config change from the adapter 844 * @ioa_cfg: ioa config struct 845 * @hostrcb: hostrcb 846 * 847 * Return value: 848 * none 849 **/ 850 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, 851 struct ipr_hostrcb *hostrcb) 852 { 853 struct ipr_resource_entry *res = NULL; 854 struct ipr_config_table_entry *cfgte; 855 u32 is_ndn = 1; 856 857 cfgte = &hostrcb->hcam.u.ccn.cfgte; 858 859 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 860 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr, 861 sizeof(cfgte->res_addr))) { 862 is_ndn = 0; 863 break; 864 } 865 } 866 867 if (is_ndn) { 868 if (list_empty(&ioa_cfg->free_res_q)) { 869 ipr_send_hcam(ioa_cfg, 870 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 871 hostrcb); 872 return; 873 } 874 875 res = list_entry(ioa_cfg->free_res_q.next, 876 struct ipr_resource_entry, queue); 877 878 list_del(&res->queue); 879 ipr_init_res_entry(res); 880 list_add_tail(&res->queue, &ioa_cfg->used_res_q); 881 } 882 883 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 884 885 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { 886 if (res->sdev) { 887 res->del_from_ml = 1; 888 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE; 889 if (ioa_cfg->allow_ml_add_del) 890 schedule_work(&ioa_cfg->work_q); 891 } else 892 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 893 } else if (!res->sdev) { 894 res->add_to_ml = 1; 895 if (ioa_cfg->allow_ml_add_del) 896 schedule_work(&ioa_cfg->work_q); 897 } 898 899 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 900 } 901 902 /** 903 * ipr_process_ccn - Op done function for a CCN. 904 * @ipr_cmd: ipr command struct 905 * 906 * This function is the op done function for a configuration 907 * change notification host controlled async from the adapter. 908 * 909 * Return value: 910 * none 911 **/ 912 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) 913 { 914 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 915 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 916 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 917 918 list_del(&hostrcb->queue); 919 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 920 921 if (ioasc) { 922 if (ioasc != IPR_IOASC_IOA_WAS_RESET) 923 dev_err(&ioa_cfg->pdev->dev, 924 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 925 926 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 927 } else { 928 ipr_handle_config_change(ioa_cfg, hostrcb); 929 } 930 } 931 932 /** 933 * strip_and_pad_whitespace - Strip and pad trailing whitespace. 934 * @i: index into buffer 935 * @buf: string to modify 936 * 937 * This function will strip all trailing whitespace, pad the end 938 * of the string with a single space, and NULL terminate the string. 939 * 940 * Return value: 941 * new length of string 942 **/ 943 static int strip_and_pad_whitespace(int i, char *buf) 944 { 945 while (i && buf[i] == ' ') 946 i--; 947 buf[i+1] = ' '; 948 buf[i+2] = '\0'; 949 return i + 2; 950 } 951 952 /** 953 * ipr_log_vpd_compact - Log the passed extended VPD compactly. 954 * @prefix: string to print at start of printk 955 * @hostrcb: hostrcb pointer 956 * @vpd: vendor/product id/sn struct 957 * 958 * Return value: 959 * none 960 **/ 961 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 962 struct ipr_vpd *vpd) 963 { 964 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3]; 965 int i = 0; 966 967 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 968 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer); 969 970 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN); 971 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer); 972 973 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN); 974 buffer[IPR_SERIAL_NUM_LEN + i] = '\0'; 975 976 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer); 977 } 978 979 /** 980 * ipr_log_vpd - Log the passed VPD to the error log. 981 * @vpd: vendor/product id/sn struct 982 * 983 * Return value: 984 * none 985 **/ 986 static void ipr_log_vpd(struct ipr_vpd *vpd) 987 { 988 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN 989 + IPR_SERIAL_NUM_LEN]; 990 991 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 992 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id, 993 IPR_PROD_ID_LEN); 994 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; 995 ipr_err("Vendor/Product ID: %s\n", buffer); 996 997 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN); 998 buffer[IPR_SERIAL_NUM_LEN] = '\0'; 999 ipr_err(" Serial Number: %s\n", buffer); 1000 } 1001 1002 /** 1003 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly. 1004 * @prefix: string to print at start of printk 1005 * @hostrcb: hostrcb pointer 1006 * @vpd: vendor/product id/sn/wwn struct 1007 * 1008 * Return value: 1009 * none 1010 **/ 1011 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 1012 struct ipr_ext_vpd *vpd) 1013 { 1014 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd); 1015 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix, 1016 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1])); 1017 } 1018 1019 /** 1020 * ipr_log_ext_vpd - Log the passed extended VPD to the error log. 1021 * @vpd: vendor/product id/sn/wwn struct 1022 * 1023 * Return value: 1024 * none 1025 **/ 1026 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd) 1027 { 1028 ipr_log_vpd(&vpd->vpd); 1029 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]), 1030 be32_to_cpu(vpd->wwid[1])); 1031 } 1032 1033 /** 1034 * ipr_log_enhanced_cache_error - Log a cache error. 1035 * @ioa_cfg: ioa config struct 1036 * @hostrcb: hostrcb struct 1037 * 1038 * Return value: 1039 * none 1040 **/ 1041 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1042 struct ipr_hostrcb *hostrcb) 1043 { 1044 struct ipr_hostrcb_type_12_error *error = 1045 &hostrcb->hcam.u.error.u.type_12_error; 1046 1047 ipr_err("-----Current Configuration-----\n"); 1048 ipr_err("Cache Directory Card Information:\n"); 1049 ipr_log_ext_vpd(&error->ioa_vpd); 1050 ipr_err("Adapter Card Information:\n"); 1051 ipr_log_ext_vpd(&error->cfc_vpd); 1052 1053 ipr_err("-----Expected Configuration-----\n"); 1054 ipr_err("Cache Directory Card Information:\n"); 1055 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd); 1056 ipr_err("Adapter Card Information:\n"); 1057 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd); 1058 1059 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1060 be32_to_cpu(error->ioa_data[0]), 1061 be32_to_cpu(error->ioa_data[1]), 1062 be32_to_cpu(error->ioa_data[2])); 1063 } 1064 1065 /** 1066 * ipr_log_cache_error - Log a cache error. 1067 * @ioa_cfg: ioa config struct 1068 * @hostrcb: hostrcb struct 1069 * 1070 * Return value: 1071 * none 1072 **/ 1073 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1074 struct ipr_hostrcb *hostrcb) 1075 { 1076 struct ipr_hostrcb_type_02_error *error = 1077 &hostrcb->hcam.u.error.u.type_02_error; 1078 1079 ipr_err("-----Current Configuration-----\n"); 1080 ipr_err("Cache Directory Card Information:\n"); 1081 ipr_log_vpd(&error->ioa_vpd); 1082 ipr_err("Adapter Card Information:\n"); 1083 ipr_log_vpd(&error->cfc_vpd); 1084 1085 ipr_err("-----Expected Configuration-----\n"); 1086 ipr_err("Cache Directory Card Information:\n"); 1087 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd); 1088 ipr_err("Adapter Card Information:\n"); 1089 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd); 1090 1091 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1092 be32_to_cpu(error->ioa_data[0]), 1093 be32_to_cpu(error->ioa_data[1]), 1094 be32_to_cpu(error->ioa_data[2])); 1095 } 1096 1097 /** 1098 * ipr_log_enhanced_config_error - Log a configuration error. 1099 * @ioa_cfg: ioa config struct 1100 * @hostrcb: hostrcb struct 1101 * 1102 * Return value: 1103 * none 1104 **/ 1105 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg, 1106 struct ipr_hostrcb *hostrcb) 1107 { 1108 int errors_logged, i; 1109 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry; 1110 struct ipr_hostrcb_type_13_error *error; 1111 1112 error = &hostrcb->hcam.u.error.u.type_13_error; 1113 errors_logged = be32_to_cpu(error->errors_logged); 1114 1115 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1116 be32_to_cpu(error->errors_detected), errors_logged); 1117 1118 dev_entry = error->dev; 1119 1120 for (i = 0; i < errors_logged; i++, dev_entry++) { 1121 ipr_err_separator; 1122 1123 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1124 ipr_log_ext_vpd(&dev_entry->vpd); 1125 1126 ipr_err("-----New Device Information-----\n"); 1127 ipr_log_ext_vpd(&dev_entry->new_vpd); 1128 1129 ipr_err("Cache Directory Card Information:\n"); 1130 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1131 1132 ipr_err("Adapter Card Information:\n"); 1133 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1134 } 1135 } 1136 1137 /** 1138 * ipr_log_config_error - Log a configuration error. 1139 * @ioa_cfg: ioa config struct 1140 * @hostrcb: hostrcb struct 1141 * 1142 * Return value: 1143 * none 1144 **/ 1145 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, 1146 struct ipr_hostrcb *hostrcb) 1147 { 1148 int errors_logged, i; 1149 struct ipr_hostrcb_device_data_entry *dev_entry; 1150 struct ipr_hostrcb_type_03_error *error; 1151 1152 error = &hostrcb->hcam.u.error.u.type_03_error; 1153 errors_logged = be32_to_cpu(error->errors_logged); 1154 1155 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1156 be32_to_cpu(error->errors_detected), errors_logged); 1157 1158 dev_entry = error->dev; 1159 1160 for (i = 0; i < errors_logged; i++, dev_entry++) { 1161 ipr_err_separator; 1162 1163 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1164 ipr_log_vpd(&dev_entry->vpd); 1165 1166 ipr_err("-----New Device Information-----\n"); 1167 ipr_log_vpd(&dev_entry->new_vpd); 1168 1169 ipr_err("Cache Directory Card Information:\n"); 1170 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd); 1171 1172 ipr_err("Adapter Card Information:\n"); 1173 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd); 1174 1175 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", 1176 be32_to_cpu(dev_entry->ioa_data[0]), 1177 be32_to_cpu(dev_entry->ioa_data[1]), 1178 be32_to_cpu(dev_entry->ioa_data[2]), 1179 be32_to_cpu(dev_entry->ioa_data[3]), 1180 be32_to_cpu(dev_entry->ioa_data[4])); 1181 } 1182 } 1183 1184 /** 1185 * ipr_log_enhanced_array_error - Log an array configuration error. 1186 * @ioa_cfg: ioa config struct 1187 * @hostrcb: hostrcb struct 1188 * 1189 * Return value: 1190 * none 1191 **/ 1192 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg, 1193 struct ipr_hostrcb *hostrcb) 1194 { 1195 int i, num_entries; 1196 struct ipr_hostrcb_type_14_error *error; 1197 struct ipr_hostrcb_array_data_entry_enhanced *array_entry; 1198 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1199 1200 error = &hostrcb->hcam.u.error.u.type_14_error; 1201 1202 ipr_err_separator; 1203 1204 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1205 error->protection_level, 1206 ioa_cfg->host->host_no, 1207 error->last_func_vset_res_addr.bus, 1208 error->last_func_vset_res_addr.target, 1209 error->last_func_vset_res_addr.lun); 1210 1211 ipr_err_separator; 1212 1213 array_entry = error->array_member; 1214 num_entries = min_t(u32, be32_to_cpu(error->num_entries), 1215 sizeof(error->array_member)); 1216 1217 for (i = 0; i < num_entries; i++, array_entry++) { 1218 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1219 continue; 1220 1221 if (be32_to_cpu(error->exposed_mode_adn) == i) 1222 ipr_err("Exposed Array Member %d:\n", i); 1223 else 1224 ipr_err("Array Member %d:\n", i); 1225 1226 ipr_log_ext_vpd(&array_entry->vpd); 1227 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1228 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1229 "Expected Location"); 1230 1231 ipr_err_separator; 1232 } 1233 } 1234 1235 /** 1236 * ipr_log_array_error - Log an array configuration error. 1237 * @ioa_cfg: ioa config struct 1238 * @hostrcb: hostrcb struct 1239 * 1240 * Return value: 1241 * none 1242 **/ 1243 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, 1244 struct ipr_hostrcb *hostrcb) 1245 { 1246 int i; 1247 struct ipr_hostrcb_type_04_error *error; 1248 struct ipr_hostrcb_array_data_entry *array_entry; 1249 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1250 1251 error = &hostrcb->hcam.u.error.u.type_04_error; 1252 1253 ipr_err_separator; 1254 1255 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1256 error->protection_level, 1257 ioa_cfg->host->host_no, 1258 error->last_func_vset_res_addr.bus, 1259 error->last_func_vset_res_addr.target, 1260 error->last_func_vset_res_addr.lun); 1261 1262 ipr_err_separator; 1263 1264 array_entry = error->array_member; 1265 1266 for (i = 0; i < 18; i++) { 1267 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1268 continue; 1269 1270 if (be32_to_cpu(error->exposed_mode_adn) == i) 1271 ipr_err("Exposed Array Member %d:\n", i); 1272 else 1273 ipr_err("Array Member %d:\n", i); 1274 1275 ipr_log_vpd(&array_entry->vpd); 1276 1277 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1278 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1279 "Expected Location"); 1280 1281 ipr_err_separator; 1282 1283 if (i == 9) 1284 array_entry = error->array_member2; 1285 else 1286 array_entry++; 1287 } 1288 } 1289 1290 /** 1291 * ipr_log_hex_data - Log additional hex IOA error data. 1292 * @ioa_cfg: ioa config struct 1293 * @data: IOA error data 1294 * @len: data length 1295 * 1296 * Return value: 1297 * none 1298 **/ 1299 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len) 1300 { 1301 int i; 1302 1303 if (len == 0) 1304 return; 1305 1306 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 1307 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP); 1308 1309 for (i = 0; i < len / 4; i += 4) { 1310 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 1311 be32_to_cpu(data[i]), 1312 be32_to_cpu(data[i+1]), 1313 be32_to_cpu(data[i+2]), 1314 be32_to_cpu(data[i+3])); 1315 } 1316 } 1317 1318 /** 1319 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error. 1320 * @ioa_cfg: ioa config struct 1321 * @hostrcb: hostrcb struct 1322 * 1323 * Return value: 1324 * none 1325 **/ 1326 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1327 struct ipr_hostrcb *hostrcb) 1328 { 1329 struct ipr_hostrcb_type_17_error *error; 1330 1331 error = &hostrcb->hcam.u.error.u.type_17_error; 1332 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1333 strstrip(error->failure_reason); 1334 1335 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 1336 be32_to_cpu(hostrcb->hcam.u.error.prc)); 1337 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd); 1338 ipr_log_hex_data(ioa_cfg, error->data, 1339 be32_to_cpu(hostrcb->hcam.length) - 1340 (offsetof(struct ipr_hostrcb_error, u) + 1341 offsetof(struct ipr_hostrcb_type_17_error, data))); 1342 } 1343 1344 /** 1345 * ipr_log_dual_ioa_error - Log a dual adapter error. 1346 * @ioa_cfg: ioa config struct 1347 * @hostrcb: hostrcb struct 1348 * 1349 * Return value: 1350 * none 1351 **/ 1352 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1353 struct ipr_hostrcb *hostrcb) 1354 { 1355 struct ipr_hostrcb_type_07_error *error; 1356 1357 error = &hostrcb->hcam.u.error.u.type_07_error; 1358 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1359 strstrip(error->failure_reason); 1360 1361 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 1362 be32_to_cpu(hostrcb->hcam.u.error.prc)); 1363 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd); 1364 ipr_log_hex_data(ioa_cfg, error->data, 1365 be32_to_cpu(hostrcb->hcam.length) - 1366 (offsetof(struct ipr_hostrcb_error, u) + 1367 offsetof(struct ipr_hostrcb_type_07_error, data))); 1368 } 1369 1370 static const struct { 1371 u8 active; 1372 char *desc; 1373 } path_active_desc[] = { 1374 { IPR_PATH_NO_INFO, "Path" }, 1375 { IPR_PATH_ACTIVE, "Active path" }, 1376 { IPR_PATH_NOT_ACTIVE, "Inactive path" } 1377 }; 1378 1379 static const struct { 1380 u8 state; 1381 char *desc; 1382 } path_state_desc[] = { 1383 { IPR_PATH_STATE_NO_INFO, "has no path state information available" }, 1384 { IPR_PATH_HEALTHY, "is healthy" }, 1385 { IPR_PATH_DEGRADED, "is degraded" }, 1386 { IPR_PATH_FAILED, "is failed" } 1387 }; 1388 1389 /** 1390 * ipr_log_fabric_path - Log a fabric path error 1391 * @hostrcb: hostrcb struct 1392 * @fabric: fabric descriptor 1393 * 1394 * Return value: 1395 * none 1396 **/ 1397 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb, 1398 struct ipr_hostrcb_fabric_desc *fabric) 1399 { 1400 int i, j; 1401 u8 path_state = fabric->path_state; 1402 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 1403 u8 state = path_state & IPR_PATH_STATE_MASK; 1404 1405 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 1406 if (path_active_desc[i].active != active) 1407 continue; 1408 1409 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 1410 if (path_state_desc[j].state != state) 1411 continue; 1412 1413 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) { 1414 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n", 1415 path_active_desc[i].desc, path_state_desc[j].desc, 1416 fabric->ioa_port); 1417 } else if (fabric->cascaded_expander == 0xff) { 1418 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n", 1419 path_active_desc[i].desc, path_state_desc[j].desc, 1420 fabric->ioa_port, fabric->phy); 1421 } else if (fabric->phy == 0xff) { 1422 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n", 1423 path_active_desc[i].desc, path_state_desc[j].desc, 1424 fabric->ioa_port, fabric->cascaded_expander); 1425 } else { 1426 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n", 1427 path_active_desc[i].desc, path_state_desc[j].desc, 1428 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1429 } 1430 return; 1431 } 1432 } 1433 1434 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state, 1435 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1436 } 1437 1438 static const struct { 1439 u8 type; 1440 char *desc; 1441 } path_type_desc[] = { 1442 { IPR_PATH_CFG_IOA_PORT, "IOA port" }, 1443 { IPR_PATH_CFG_EXP_PORT, "Expander port" }, 1444 { IPR_PATH_CFG_DEVICE_PORT, "Device port" }, 1445 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" } 1446 }; 1447 1448 static const struct { 1449 u8 status; 1450 char *desc; 1451 } path_status_desc[] = { 1452 { IPR_PATH_CFG_NO_PROB, "Functional" }, 1453 { IPR_PATH_CFG_DEGRADED, "Degraded" }, 1454 { IPR_PATH_CFG_FAILED, "Failed" }, 1455 { IPR_PATH_CFG_SUSPECT, "Suspect" }, 1456 { IPR_PATH_NOT_DETECTED, "Missing" }, 1457 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" } 1458 }; 1459 1460 static const char *link_rate[] = { 1461 "unknown", 1462 "disabled", 1463 "phy reset problem", 1464 "spinup hold", 1465 "port selector", 1466 "unknown", 1467 "unknown", 1468 "unknown", 1469 "1.5Gbps", 1470 "3.0Gbps", 1471 "unknown", 1472 "unknown", 1473 "unknown", 1474 "unknown", 1475 "unknown", 1476 "unknown" 1477 }; 1478 1479 /** 1480 * ipr_log_path_elem - Log a fabric path element. 1481 * @hostrcb: hostrcb struct 1482 * @cfg: fabric path element struct 1483 * 1484 * Return value: 1485 * none 1486 **/ 1487 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb, 1488 struct ipr_hostrcb_config_element *cfg) 1489 { 1490 int i, j; 1491 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 1492 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 1493 1494 if (type == IPR_PATH_CFG_NOT_EXIST) 1495 return; 1496 1497 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 1498 if (path_type_desc[i].type != type) 1499 continue; 1500 1501 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 1502 if (path_status_desc[j].status != status) 1503 continue; 1504 1505 if (type == IPR_PATH_CFG_IOA_PORT) { 1506 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n", 1507 path_status_desc[j].desc, path_type_desc[i].desc, 1508 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1509 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1510 } else { 1511 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) { 1512 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n", 1513 path_status_desc[j].desc, path_type_desc[i].desc, 1514 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1515 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1516 } else if (cfg->cascaded_expander == 0xff) { 1517 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, " 1518 "WWN=%08X%08X\n", path_status_desc[j].desc, 1519 path_type_desc[i].desc, cfg->phy, 1520 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1521 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1522 } else if (cfg->phy == 0xff) { 1523 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, " 1524 "WWN=%08X%08X\n", path_status_desc[j].desc, 1525 path_type_desc[i].desc, cfg->cascaded_expander, 1526 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1527 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1528 } else { 1529 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s " 1530 "WWN=%08X%08X\n", path_status_desc[j].desc, 1531 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy, 1532 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1533 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1534 } 1535 } 1536 return; 1537 } 1538 } 1539 1540 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s " 1541 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy, 1542 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1543 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1544 } 1545 1546 /** 1547 * ipr_log_fabric_error - Log a fabric error. 1548 * @ioa_cfg: ioa config struct 1549 * @hostrcb: hostrcb struct 1550 * 1551 * Return value: 1552 * none 1553 **/ 1554 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 1555 struct ipr_hostrcb *hostrcb) 1556 { 1557 struct ipr_hostrcb_type_20_error *error; 1558 struct ipr_hostrcb_fabric_desc *fabric; 1559 struct ipr_hostrcb_config_element *cfg; 1560 int i, add_len; 1561 1562 error = &hostrcb->hcam.u.error.u.type_20_error; 1563 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1564 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 1565 1566 add_len = be32_to_cpu(hostrcb->hcam.length) - 1567 (offsetof(struct ipr_hostrcb_error, u) + 1568 offsetof(struct ipr_hostrcb_type_20_error, desc)); 1569 1570 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 1571 ipr_log_fabric_path(hostrcb, fabric); 1572 for_each_fabric_cfg(fabric, cfg) 1573 ipr_log_path_elem(hostrcb, cfg); 1574 1575 add_len -= be16_to_cpu(fabric->length); 1576 fabric = (struct ipr_hostrcb_fabric_desc *) 1577 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 1578 } 1579 1580 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len); 1581 } 1582 1583 /** 1584 * ipr_log_generic_error - Log an adapter error. 1585 * @ioa_cfg: ioa config struct 1586 * @hostrcb: hostrcb struct 1587 * 1588 * Return value: 1589 * none 1590 **/ 1591 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, 1592 struct ipr_hostrcb *hostrcb) 1593 { 1594 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data, 1595 be32_to_cpu(hostrcb->hcam.length)); 1596 } 1597 1598 /** 1599 * ipr_get_error - Find the specfied IOASC in the ipr_error_table. 1600 * @ioasc: IOASC 1601 * 1602 * This function will return the index of into the ipr_error_table 1603 * for the specified IOASC. If the IOASC is not in the table, 1604 * 0 will be returned, which points to the entry used for unknown errors. 1605 * 1606 * Return value: 1607 * index into the ipr_error_table 1608 **/ 1609 static u32 ipr_get_error(u32 ioasc) 1610 { 1611 int i; 1612 1613 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) 1614 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK)) 1615 return i; 1616 1617 return 0; 1618 } 1619 1620 /** 1621 * ipr_handle_log_data - Log an adapter error. 1622 * @ioa_cfg: ioa config struct 1623 * @hostrcb: hostrcb struct 1624 * 1625 * This function logs an adapter error to the system. 1626 * 1627 * Return value: 1628 * none 1629 **/ 1630 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 1631 struct ipr_hostrcb *hostrcb) 1632 { 1633 u32 ioasc; 1634 int error_index; 1635 1636 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) 1637 return; 1638 1639 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) 1640 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); 1641 1642 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc); 1643 1644 if (ioasc == IPR_IOASC_BUS_WAS_RESET || 1645 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) { 1646 /* Tell the midlayer we had a bus reset so it will handle the UA properly */ 1647 scsi_report_bus_reset(ioa_cfg->host, 1648 hostrcb->hcam.u.error.failing_dev_res_addr.bus); 1649 } 1650 1651 error_index = ipr_get_error(ioasc); 1652 1653 if (!ipr_error_table[error_index].log_hcam) 1654 return; 1655 1656 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error); 1657 1658 /* Set indication we have logged an error */ 1659 ioa_cfg->errors_logged++; 1660 1661 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam) 1662 return; 1663 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw)) 1664 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw)); 1665 1666 switch (hostrcb->hcam.overlay_id) { 1667 case IPR_HOST_RCB_OVERLAY_ID_2: 1668 ipr_log_cache_error(ioa_cfg, hostrcb); 1669 break; 1670 case IPR_HOST_RCB_OVERLAY_ID_3: 1671 ipr_log_config_error(ioa_cfg, hostrcb); 1672 break; 1673 case IPR_HOST_RCB_OVERLAY_ID_4: 1674 case IPR_HOST_RCB_OVERLAY_ID_6: 1675 ipr_log_array_error(ioa_cfg, hostrcb); 1676 break; 1677 case IPR_HOST_RCB_OVERLAY_ID_7: 1678 ipr_log_dual_ioa_error(ioa_cfg, hostrcb); 1679 break; 1680 case IPR_HOST_RCB_OVERLAY_ID_12: 1681 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb); 1682 break; 1683 case IPR_HOST_RCB_OVERLAY_ID_13: 1684 ipr_log_enhanced_config_error(ioa_cfg, hostrcb); 1685 break; 1686 case IPR_HOST_RCB_OVERLAY_ID_14: 1687 case IPR_HOST_RCB_OVERLAY_ID_16: 1688 ipr_log_enhanced_array_error(ioa_cfg, hostrcb); 1689 break; 1690 case IPR_HOST_RCB_OVERLAY_ID_17: 1691 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb); 1692 break; 1693 case IPR_HOST_RCB_OVERLAY_ID_20: 1694 ipr_log_fabric_error(ioa_cfg, hostrcb); 1695 break; 1696 case IPR_HOST_RCB_OVERLAY_ID_1: 1697 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: 1698 default: 1699 ipr_log_generic_error(ioa_cfg, hostrcb); 1700 break; 1701 } 1702 } 1703 1704 /** 1705 * ipr_process_error - Op done function for an adapter error log. 1706 * @ipr_cmd: ipr command struct 1707 * 1708 * This function is the op done function for an error log host 1709 * controlled async from the adapter. It will log the error and 1710 * send the HCAM back to the adapter. 1711 * 1712 * Return value: 1713 * none 1714 **/ 1715 static void ipr_process_error(struct ipr_cmnd *ipr_cmd) 1716 { 1717 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1718 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 1719 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 1720 u32 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc); 1721 1722 list_del(&hostrcb->queue); 1723 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 1724 1725 if (!ioasc) { 1726 ipr_handle_log_data(ioa_cfg, hostrcb); 1727 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED) 1728 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV); 1729 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) { 1730 dev_err(&ioa_cfg->pdev->dev, 1731 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 1732 } 1733 1734 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 1735 } 1736 1737 /** 1738 * ipr_timeout - An internally generated op has timed out. 1739 * @ipr_cmd: ipr command struct 1740 * 1741 * This function blocks host requests and initiates an 1742 * adapter reset. 1743 * 1744 * Return value: 1745 * none 1746 **/ 1747 static void ipr_timeout(struct ipr_cmnd *ipr_cmd) 1748 { 1749 unsigned long lock_flags = 0; 1750 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1751 1752 ENTER; 1753 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1754 1755 ioa_cfg->errors_logged++; 1756 dev_err(&ioa_cfg->pdev->dev, 1757 "Adapter being reset due to command timeout.\n"); 1758 1759 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 1760 ioa_cfg->sdt_state = GET_DUMP; 1761 1762 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) 1763 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 1764 1765 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1766 LEAVE; 1767 } 1768 1769 /** 1770 * ipr_oper_timeout - Adapter timed out transitioning to operational 1771 * @ipr_cmd: ipr command struct 1772 * 1773 * This function blocks host requests and initiates an 1774 * adapter reset. 1775 * 1776 * Return value: 1777 * none 1778 **/ 1779 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) 1780 { 1781 unsigned long lock_flags = 0; 1782 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1783 1784 ENTER; 1785 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1786 1787 ioa_cfg->errors_logged++; 1788 dev_err(&ioa_cfg->pdev->dev, 1789 "Adapter timed out transitioning to operational.\n"); 1790 1791 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 1792 ioa_cfg->sdt_state = GET_DUMP; 1793 1794 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { 1795 if (ipr_fastfail) 1796 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 1797 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 1798 } 1799 1800 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1801 LEAVE; 1802 } 1803 1804 /** 1805 * ipr_reset_reload - Reset/Reload the IOA 1806 * @ioa_cfg: ioa config struct 1807 * @shutdown_type: shutdown type 1808 * 1809 * This function resets the adapter and re-initializes it. 1810 * This function assumes that all new host commands have been stopped. 1811 * Return value: 1812 * SUCCESS / FAILED 1813 **/ 1814 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg, 1815 enum ipr_shutdown_type shutdown_type) 1816 { 1817 if (!ioa_cfg->in_reset_reload) 1818 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 1819 1820 spin_unlock_irq(ioa_cfg->host->host_lock); 1821 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 1822 spin_lock_irq(ioa_cfg->host->host_lock); 1823 1824 /* If we got hit with a host reset while we were already resetting 1825 the adapter for some reason, and the reset failed. */ 1826 if (ioa_cfg->ioa_is_dead) { 1827 ipr_trace; 1828 return FAILED; 1829 } 1830 1831 return SUCCESS; 1832 } 1833 1834 /** 1835 * ipr_find_ses_entry - Find matching SES in SES table 1836 * @res: resource entry struct of SES 1837 * 1838 * Return value: 1839 * pointer to SES table entry / NULL on failure 1840 **/ 1841 static const struct ipr_ses_table_entry * 1842 ipr_find_ses_entry(struct ipr_resource_entry *res) 1843 { 1844 int i, j, matches; 1845 const struct ipr_ses_table_entry *ste = ipr_ses_table; 1846 1847 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { 1848 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { 1849 if (ste->compare_product_id_byte[j] == 'X') { 1850 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j]) 1851 matches++; 1852 else 1853 break; 1854 } else 1855 matches++; 1856 } 1857 1858 if (matches == IPR_PROD_ID_LEN) 1859 return ste; 1860 } 1861 1862 return NULL; 1863 } 1864 1865 /** 1866 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus 1867 * @ioa_cfg: ioa config struct 1868 * @bus: SCSI bus 1869 * @bus_width: bus width 1870 * 1871 * Return value: 1872 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz 1873 * For a 2-byte wide SCSI bus, the maximum transfer speed is 1874 * twice the maximum transfer rate (e.g. for a wide enabled bus, 1875 * max 160MHz = max 320MB/sec). 1876 **/ 1877 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) 1878 { 1879 struct ipr_resource_entry *res; 1880 const struct ipr_ses_table_entry *ste; 1881 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); 1882 1883 /* Loop through each config table entry in the config table buffer */ 1884 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1885 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data))) 1886 continue; 1887 1888 if (bus != res->cfgte.res_addr.bus) 1889 continue; 1890 1891 if (!(ste = ipr_find_ses_entry(res))) 1892 continue; 1893 1894 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); 1895 } 1896 1897 return max_xfer_rate; 1898 } 1899 1900 /** 1901 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA 1902 * @ioa_cfg: ioa config struct 1903 * @max_delay: max delay in micro-seconds to wait 1904 * 1905 * Waits for an IODEBUG ACK from the IOA, doing busy looping. 1906 * 1907 * Return value: 1908 * 0 on success / other on failure 1909 **/ 1910 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) 1911 { 1912 volatile u32 pcii_reg; 1913 int delay = 1; 1914 1915 /* Read interrupt reg until IOA signals IO Debug Acknowledge */ 1916 while (delay < max_delay) { 1917 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 1918 1919 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) 1920 return 0; 1921 1922 /* udelay cannot be used if delay is more than a few milliseconds */ 1923 if ((delay / 1000) > MAX_UDELAY_MS) 1924 mdelay(delay / 1000); 1925 else 1926 udelay(delay); 1927 1928 delay += delay; 1929 } 1930 return -EIO; 1931 } 1932 1933 /** 1934 * ipr_get_ldump_data_section - Dump IOA memory 1935 * @ioa_cfg: ioa config struct 1936 * @start_addr: adapter address to dump 1937 * @dest: destination kernel buffer 1938 * @length_in_words: length to dump in 4 byte words 1939 * 1940 * Return value: 1941 * 0 on success / -EIO on failure 1942 **/ 1943 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, 1944 u32 start_addr, 1945 __be32 *dest, u32 length_in_words) 1946 { 1947 volatile u32 temp_pcii_reg; 1948 int i, delay = 0; 1949 1950 /* Write IOA interrupt reg starting LDUMP state */ 1951 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), 1952 ioa_cfg->regs.set_uproc_interrupt_reg); 1953 1954 /* Wait for IO debug acknowledge */ 1955 if (ipr_wait_iodbg_ack(ioa_cfg, 1956 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { 1957 dev_err(&ioa_cfg->pdev->dev, 1958 "IOA dump long data transfer timeout\n"); 1959 return -EIO; 1960 } 1961 1962 /* Signal LDUMP interlocked - clear IO debug ack */ 1963 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1964 ioa_cfg->regs.clr_interrupt_reg); 1965 1966 /* Write Mailbox with starting address */ 1967 writel(start_addr, ioa_cfg->ioa_mailbox); 1968 1969 /* Signal address valid - clear IOA Reset alert */ 1970 writel(IPR_UPROCI_RESET_ALERT, 1971 ioa_cfg->regs.clr_uproc_interrupt_reg); 1972 1973 for (i = 0; i < length_in_words; i++) { 1974 /* Wait for IO debug acknowledge */ 1975 if (ipr_wait_iodbg_ack(ioa_cfg, 1976 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { 1977 dev_err(&ioa_cfg->pdev->dev, 1978 "IOA dump short data transfer timeout\n"); 1979 return -EIO; 1980 } 1981 1982 /* Read data from mailbox and increment destination pointer */ 1983 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); 1984 dest++; 1985 1986 /* For all but the last word of data, signal data received */ 1987 if (i < (length_in_words - 1)) { 1988 /* Signal dump data received - Clear IO debug Ack */ 1989 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1990 ioa_cfg->regs.clr_interrupt_reg); 1991 } 1992 } 1993 1994 /* Signal end of block transfer. Set reset alert then clear IO debug ack */ 1995 writel(IPR_UPROCI_RESET_ALERT, 1996 ioa_cfg->regs.set_uproc_interrupt_reg); 1997 1998 writel(IPR_UPROCI_IO_DEBUG_ALERT, 1999 ioa_cfg->regs.clr_uproc_interrupt_reg); 2000 2001 /* Signal dump data received - Clear IO debug Ack */ 2002 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2003 ioa_cfg->regs.clr_interrupt_reg); 2004 2005 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ 2006 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { 2007 temp_pcii_reg = 2008 readl(ioa_cfg->regs.sense_uproc_interrupt_reg); 2009 2010 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) 2011 return 0; 2012 2013 udelay(10); 2014 delay += 10; 2015 } 2016 2017 return 0; 2018 } 2019 2020 #ifdef CONFIG_SCSI_IPR_DUMP 2021 /** 2022 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer 2023 * @ioa_cfg: ioa config struct 2024 * @pci_address: adapter address 2025 * @length: length of data to copy 2026 * 2027 * Copy data from PCI adapter to kernel buffer. 2028 * Note: length MUST be a 4 byte multiple 2029 * Return value: 2030 * 0 on success / other on failure 2031 **/ 2032 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, 2033 unsigned long pci_address, u32 length) 2034 { 2035 int bytes_copied = 0; 2036 int cur_len, rc, rem_len, rem_page_len; 2037 __be32 *page; 2038 unsigned long lock_flags = 0; 2039 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; 2040 2041 while (bytes_copied < length && 2042 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) { 2043 if (ioa_dump->page_offset >= PAGE_SIZE || 2044 ioa_dump->page_offset == 0) { 2045 page = (__be32 *)__get_free_page(GFP_ATOMIC); 2046 2047 if (!page) { 2048 ipr_trace; 2049 return bytes_copied; 2050 } 2051 2052 ioa_dump->page_offset = 0; 2053 ioa_dump->ioa_data[ioa_dump->next_page_index] = page; 2054 ioa_dump->next_page_index++; 2055 } else 2056 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; 2057 2058 rem_len = length - bytes_copied; 2059 rem_page_len = PAGE_SIZE - ioa_dump->page_offset; 2060 cur_len = min(rem_len, rem_page_len); 2061 2062 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2063 if (ioa_cfg->sdt_state == ABORT_DUMP) { 2064 rc = -EIO; 2065 } else { 2066 rc = ipr_get_ldump_data_section(ioa_cfg, 2067 pci_address + bytes_copied, 2068 &page[ioa_dump->page_offset / 4], 2069 (cur_len / sizeof(u32))); 2070 } 2071 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2072 2073 if (!rc) { 2074 ioa_dump->page_offset += cur_len; 2075 bytes_copied += cur_len; 2076 } else { 2077 ipr_trace; 2078 break; 2079 } 2080 schedule(); 2081 } 2082 2083 return bytes_copied; 2084 } 2085 2086 /** 2087 * ipr_init_dump_entry_hdr - Initialize a dump entry header. 2088 * @hdr: dump entry header struct 2089 * 2090 * Return value: 2091 * nothing 2092 **/ 2093 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) 2094 { 2095 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; 2096 hdr->num_elems = 1; 2097 hdr->offset = sizeof(*hdr); 2098 hdr->status = IPR_DUMP_STATUS_SUCCESS; 2099 } 2100 2101 /** 2102 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. 2103 * @ioa_cfg: ioa config struct 2104 * @driver_dump: driver dump struct 2105 * 2106 * Return value: 2107 * nothing 2108 **/ 2109 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, 2110 struct ipr_driver_dump *driver_dump) 2111 { 2112 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2113 2114 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); 2115 driver_dump->ioa_type_entry.hdr.len = 2116 sizeof(struct ipr_dump_ioa_type_entry) - 2117 sizeof(struct ipr_dump_entry_header); 2118 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2119 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; 2120 driver_dump->ioa_type_entry.type = ioa_cfg->type; 2121 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | 2122 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | 2123 ucode_vpd->minor_release[1]; 2124 driver_dump->hdr.num_entries++; 2125 } 2126 2127 /** 2128 * ipr_dump_version_data - Fill in the driver version in the dump. 2129 * @ioa_cfg: ioa config struct 2130 * @driver_dump: driver dump struct 2131 * 2132 * Return value: 2133 * nothing 2134 **/ 2135 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, 2136 struct ipr_driver_dump *driver_dump) 2137 { 2138 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); 2139 driver_dump->version_entry.hdr.len = 2140 sizeof(struct ipr_dump_version_entry) - 2141 sizeof(struct ipr_dump_entry_header); 2142 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2143 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; 2144 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); 2145 driver_dump->hdr.num_entries++; 2146 } 2147 2148 /** 2149 * ipr_dump_trace_data - Fill in the IOA trace in the dump. 2150 * @ioa_cfg: ioa config struct 2151 * @driver_dump: driver dump struct 2152 * 2153 * Return value: 2154 * nothing 2155 **/ 2156 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, 2157 struct ipr_driver_dump *driver_dump) 2158 { 2159 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); 2160 driver_dump->trace_entry.hdr.len = 2161 sizeof(struct ipr_dump_trace_entry) - 2162 sizeof(struct ipr_dump_entry_header); 2163 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2164 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; 2165 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); 2166 driver_dump->hdr.num_entries++; 2167 } 2168 2169 /** 2170 * ipr_dump_location_data - Fill in the IOA location in the dump. 2171 * @ioa_cfg: ioa config struct 2172 * @driver_dump: driver dump struct 2173 * 2174 * Return value: 2175 * nothing 2176 **/ 2177 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, 2178 struct ipr_driver_dump *driver_dump) 2179 { 2180 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); 2181 driver_dump->location_entry.hdr.len = 2182 sizeof(struct ipr_dump_location_entry) - 2183 sizeof(struct ipr_dump_entry_header); 2184 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2185 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; 2186 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id); 2187 driver_dump->hdr.num_entries++; 2188 } 2189 2190 /** 2191 * ipr_get_ioa_dump - Perform a dump of the driver and adapter. 2192 * @ioa_cfg: ioa config struct 2193 * @dump: dump struct 2194 * 2195 * Return value: 2196 * nothing 2197 **/ 2198 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) 2199 { 2200 unsigned long start_addr, sdt_word; 2201 unsigned long lock_flags = 0; 2202 struct ipr_driver_dump *driver_dump = &dump->driver_dump; 2203 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; 2204 u32 num_entries, start_off, end_off; 2205 u32 bytes_to_copy, bytes_copied, rc; 2206 struct ipr_sdt *sdt; 2207 int i; 2208 2209 ENTER; 2210 2211 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2212 2213 if (ioa_cfg->sdt_state != GET_DUMP) { 2214 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2215 return; 2216 } 2217 2218 start_addr = readl(ioa_cfg->ioa_mailbox); 2219 2220 if (!ipr_sdt_is_fmt2(start_addr)) { 2221 dev_err(&ioa_cfg->pdev->dev, 2222 "Invalid dump table format: %lx\n", start_addr); 2223 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2224 return; 2225 } 2226 2227 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); 2228 2229 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; 2230 2231 /* Initialize the overall dump header */ 2232 driver_dump->hdr.len = sizeof(struct ipr_driver_dump); 2233 driver_dump->hdr.num_entries = 1; 2234 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); 2235 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; 2236 driver_dump->hdr.os = IPR_DUMP_OS_LINUX; 2237 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; 2238 2239 ipr_dump_version_data(ioa_cfg, driver_dump); 2240 ipr_dump_location_data(ioa_cfg, driver_dump); 2241 ipr_dump_ioa_type_data(ioa_cfg, driver_dump); 2242 ipr_dump_trace_data(ioa_cfg, driver_dump); 2243 2244 /* Update dump_header */ 2245 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); 2246 2247 /* IOA Dump entry */ 2248 ipr_init_dump_entry_hdr(&ioa_dump->hdr); 2249 ioa_dump->format = IPR_SDT_FMT2; 2250 ioa_dump->hdr.len = 0; 2251 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2252 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; 2253 2254 /* First entries in sdt are actually a list of dump addresses and 2255 lengths to gather the real dump data. sdt represents the pointer 2256 to the ioa generated dump table. Dump data will be extracted based 2257 on entries in this table */ 2258 sdt = &ioa_dump->sdt; 2259 2260 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, 2261 sizeof(struct ipr_sdt) / sizeof(__be32)); 2262 2263 /* Smart Dump table is ready to use and the first entry is valid */ 2264 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) { 2265 dev_err(&ioa_cfg->pdev->dev, 2266 "Dump of IOA failed. Dump table not valid: %d, %X.\n", 2267 rc, be32_to_cpu(sdt->hdr.state)); 2268 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; 2269 ioa_cfg->sdt_state = DUMP_OBTAINED; 2270 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2271 return; 2272 } 2273 2274 num_entries = be32_to_cpu(sdt->hdr.num_entries_used); 2275 2276 if (num_entries > IPR_NUM_SDT_ENTRIES) 2277 num_entries = IPR_NUM_SDT_ENTRIES; 2278 2279 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2280 2281 for (i = 0; i < num_entries; i++) { 2282 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) { 2283 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 2284 break; 2285 } 2286 2287 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { 2288 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset); 2289 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; 2290 end_off = be32_to_cpu(sdt->entry[i].end_offset); 2291 2292 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) { 2293 bytes_to_copy = end_off - start_off; 2294 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) { 2295 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; 2296 continue; 2297 } 2298 2299 /* Copy data from adapter to driver buffers */ 2300 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, 2301 bytes_to_copy); 2302 2303 ioa_dump->hdr.len += bytes_copied; 2304 2305 if (bytes_copied != bytes_to_copy) { 2306 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 2307 break; 2308 } 2309 } 2310 } 2311 } 2312 2313 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); 2314 2315 /* Update dump_header */ 2316 driver_dump->hdr.len += ioa_dump->hdr.len; 2317 wmb(); 2318 ioa_cfg->sdt_state = DUMP_OBTAINED; 2319 LEAVE; 2320 } 2321 2322 #else 2323 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0) 2324 #endif 2325 2326 /** 2327 * ipr_release_dump - Free adapter dump memory 2328 * @kref: kref struct 2329 * 2330 * Return value: 2331 * nothing 2332 **/ 2333 static void ipr_release_dump(struct kref *kref) 2334 { 2335 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref); 2336 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; 2337 unsigned long lock_flags = 0; 2338 int i; 2339 2340 ENTER; 2341 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2342 ioa_cfg->dump = NULL; 2343 ioa_cfg->sdt_state = INACTIVE; 2344 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2345 2346 for (i = 0; i < dump->ioa_dump.next_page_index; i++) 2347 free_page((unsigned long) dump->ioa_dump.ioa_data[i]); 2348 2349 kfree(dump); 2350 LEAVE; 2351 } 2352 2353 /** 2354 * ipr_worker_thread - Worker thread 2355 * @work: ioa config struct 2356 * 2357 * Called at task level from a work thread. This function takes care 2358 * of adding and removing device from the mid-layer as configuration 2359 * changes are detected by the adapter. 2360 * 2361 * Return value: 2362 * nothing 2363 **/ 2364 static void ipr_worker_thread(struct work_struct *work) 2365 { 2366 unsigned long lock_flags; 2367 struct ipr_resource_entry *res; 2368 struct scsi_device *sdev; 2369 struct ipr_dump *dump; 2370 struct ipr_ioa_cfg *ioa_cfg = 2371 container_of(work, struct ipr_ioa_cfg, work_q); 2372 u8 bus, target, lun; 2373 int did_work; 2374 2375 ENTER; 2376 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2377 2378 if (ioa_cfg->sdt_state == GET_DUMP) { 2379 dump = ioa_cfg->dump; 2380 if (!dump) { 2381 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2382 return; 2383 } 2384 kref_get(&dump->kref); 2385 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2386 ipr_get_ioa_dump(ioa_cfg, dump); 2387 kref_put(&dump->kref, ipr_release_dump); 2388 2389 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2390 if (ioa_cfg->sdt_state == DUMP_OBTAINED) 2391 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2392 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2393 return; 2394 } 2395 2396 restart: 2397 do { 2398 did_work = 0; 2399 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) { 2400 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2401 return; 2402 } 2403 2404 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2405 if (res->del_from_ml && res->sdev) { 2406 did_work = 1; 2407 sdev = res->sdev; 2408 if (!scsi_device_get(sdev)) { 2409 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 2410 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2411 scsi_remove_device(sdev); 2412 scsi_device_put(sdev); 2413 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2414 } 2415 break; 2416 } 2417 } 2418 } while(did_work); 2419 2420 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2421 if (res->add_to_ml) { 2422 bus = res->cfgte.res_addr.bus; 2423 target = res->cfgte.res_addr.target; 2424 lun = res->cfgte.res_addr.lun; 2425 res->add_to_ml = 0; 2426 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2427 scsi_add_device(ioa_cfg->host, bus, target, lun); 2428 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2429 goto restart; 2430 } 2431 } 2432 2433 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2434 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE); 2435 LEAVE; 2436 } 2437 2438 #ifdef CONFIG_SCSI_IPR_TRACE 2439 /** 2440 * ipr_read_trace - Dump the adapter trace 2441 * @kobj: kobject struct 2442 * @bin_attr: bin_attribute struct 2443 * @buf: buffer 2444 * @off: offset 2445 * @count: buffer size 2446 * 2447 * Return value: 2448 * number of bytes printed to buffer 2449 **/ 2450 static ssize_t ipr_read_trace(struct kobject *kobj, 2451 struct bin_attribute *bin_attr, 2452 char *buf, loff_t off, size_t count) 2453 { 2454 struct device *dev = container_of(kobj, struct device, kobj); 2455 struct Scsi_Host *shost = class_to_shost(dev); 2456 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2457 unsigned long lock_flags = 0; 2458 int size = IPR_TRACE_SIZE; 2459 char *src = (char *)ioa_cfg->trace; 2460 2461 if (off > size) 2462 return 0; 2463 if (off + count > size) { 2464 size -= off; 2465 count = size; 2466 } 2467 2468 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2469 memcpy(buf, &src[off], count); 2470 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2471 return count; 2472 } 2473 2474 static struct bin_attribute ipr_trace_attr = { 2475 .attr = { 2476 .name = "trace", 2477 .mode = S_IRUGO, 2478 }, 2479 .size = 0, 2480 .read = ipr_read_trace, 2481 }; 2482 #endif 2483 2484 static const struct { 2485 enum ipr_cache_state state; 2486 char *name; 2487 } cache_state [] = { 2488 { CACHE_NONE, "none" }, 2489 { CACHE_DISABLED, "disabled" }, 2490 { CACHE_ENABLED, "enabled" } 2491 }; 2492 2493 /** 2494 * ipr_show_write_caching - Show the write caching attribute 2495 * @dev: device struct 2496 * @buf: buffer 2497 * 2498 * Return value: 2499 * number of bytes printed to buffer 2500 **/ 2501 static ssize_t ipr_show_write_caching(struct device *dev, 2502 struct device_attribute *attr, char *buf) 2503 { 2504 struct Scsi_Host *shost = class_to_shost(dev); 2505 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2506 unsigned long lock_flags = 0; 2507 int i, len = 0; 2508 2509 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2510 for (i = 0; i < ARRAY_SIZE(cache_state); i++) { 2511 if (cache_state[i].state == ioa_cfg->cache_state) { 2512 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name); 2513 break; 2514 } 2515 } 2516 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2517 return len; 2518 } 2519 2520 2521 /** 2522 * ipr_store_write_caching - Enable/disable adapter write cache 2523 * @dev: device struct 2524 * @buf: buffer 2525 * @count: buffer size 2526 * 2527 * This function will enable/disable adapter write cache. 2528 * 2529 * Return value: 2530 * count on success / other on failure 2531 **/ 2532 static ssize_t ipr_store_write_caching(struct device *dev, 2533 struct device_attribute *attr, 2534 const char *buf, size_t count) 2535 { 2536 struct Scsi_Host *shost = class_to_shost(dev); 2537 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2538 unsigned long lock_flags = 0; 2539 enum ipr_cache_state new_state = CACHE_INVALID; 2540 int i; 2541 2542 if (!capable(CAP_SYS_ADMIN)) 2543 return -EACCES; 2544 if (ioa_cfg->cache_state == CACHE_NONE) 2545 return -EINVAL; 2546 2547 for (i = 0; i < ARRAY_SIZE(cache_state); i++) { 2548 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) { 2549 new_state = cache_state[i].state; 2550 break; 2551 } 2552 } 2553 2554 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED) 2555 return -EINVAL; 2556 2557 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2558 if (ioa_cfg->cache_state == new_state) { 2559 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2560 return count; 2561 } 2562 2563 ioa_cfg->cache_state = new_state; 2564 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n", 2565 new_state == CACHE_ENABLED ? "Enabling" : "Disabling"); 2566 if (!ioa_cfg->in_reset_reload) 2567 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2568 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2569 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2570 2571 return count; 2572 } 2573 2574 static struct device_attribute ipr_ioa_cache_attr = { 2575 .attr = { 2576 .name = "write_cache", 2577 .mode = S_IRUGO | S_IWUSR, 2578 }, 2579 .show = ipr_show_write_caching, 2580 .store = ipr_store_write_caching 2581 }; 2582 2583 /** 2584 * ipr_show_fw_version - Show the firmware version 2585 * @dev: class device struct 2586 * @buf: buffer 2587 * 2588 * Return value: 2589 * number of bytes printed to buffer 2590 **/ 2591 static ssize_t ipr_show_fw_version(struct device *dev, 2592 struct device_attribute *attr, char *buf) 2593 { 2594 struct Scsi_Host *shost = class_to_shost(dev); 2595 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2596 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2597 unsigned long lock_flags = 0; 2598 int len; 2599 2600 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2601 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 2602 ucode_vpd->major_release, ucode_vpd->card_type, 2603 ucode_vpd->minor_release[0], 2604 ucode_vpd->minor_release[1]); 2605 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2606 return len; 2607 } 2608 2609 static struct device_attribute ipr_fw_version_attr = { 2610 .attr = { 2611 .name = "fw_version", 2612 .mode = S_IRUGO, 2613 }, 2614 .show = ipr_show_fw_version, 2615 }; 2616 2617 /** 2618 * ipr_show_log_level - Show the adapter's error logging level 2619 * @dev: class device struct 2620 * @buf: buffer 2621 * 2622 * Return value: 2623 * number of bytes printed to buffer 2624 **/ 2625 static ssize_t ipr_show_log_level(struct device *dev, 2626 struct device_attribute *attr, char *buf) 2627 { 2628 struct Scsi_Host *shost = class_to_shost(dev); 2629 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2630 unsigned long lock_flags = 0; 2631 int len; 2632 2633 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2634 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 2635 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2636 return len; 2637 } 2638 2639 /** 2640 * ipr_store_log_level - Change the adapter's error logging level 2641 * @dev: class device struct 2642 * @buf: buffer 2643 * 2644 * Return value: 2645 * number of bytes printed to buffer 2646 **/ 2647 static ssize_t ipr_store_log_level(struct device *dev, 2648 struct device_attribute *attr, 2649 const char *buf, size_t count) 2650 { 2651 struct Scsi_Host *shost = class_to_shost(dev); 2652 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2653 unsigned long lock_flags = 0; 2654 2655 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2656 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 2657 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2658 return strlen(buf); 2659 } 2660 2661 static struct device_attribute ipr_log_level_attr = { 2662 .attr = { 2663 .name = "log_level", 2664 .mode = S_IRUGO | S_IWUSR, 2665 }, 2666 .show = ipr_show_log_level, 2667 .store = ipr_store_log_level 2668 }; 2669 2670 /** 2671 * ipr_store_diagnostics - IOA Diagnostics interface 2672 * @dev: device struct 2673 * @buf: buffer 2674 * @count: buffer size 2675 * 2676 * This function will reset the adapter and wait a reasonable 2677 * amount of time for any errors that the adapter might log. 2678 * 2679 * Return value: 2680 * count on success / other on failure 2681 **/ 2682 static ssize_t ipr_store_diagnostics(struct device *dev, 2683 struct device_attribute *attr, 2684 const char *buf, size_t count) 2685 { 2686 struct Scsi_Host *shost = class_to_shost(dev); 2687 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2688 unsigned long lock_flags = 0; 2689 int rc = count; 2690 2691 if (!capable(CAP_SYS_ADMIN)) 2692 return -EACCES; 2693 2694 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2695 while(ioa_cfg->in_reset_reload) { 2696 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2697 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2698 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2699 } 2700 2701 ioa_cfg->errors_logged = 0; 2702 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2703 2704 if (ioa_cfg->in_reset_reload) { 2705 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2706 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2707 2708 /* Wait for a second for any errors to be logged */ 2709 msleep(1000); 2710 } else { 2711 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2712 return -EIO; 2713 } 2714 2715 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2716 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 2717 rc = -EIO; 2718 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2719 2720 return rc; 2721 } 2722 2723 static struct device_attribute ipr_diagnostics_attr = { 2724 .attr = { 2725 .name = "run_diagnostics", 2726 .mode = S_IWUSR, 2727 }, 2728 .store = ipr_store_diagnostics 2729 }; 2730 2731 /** 2732 * ipr_show_adapter_state - Show the adapter's state 2733 * @class_dev: device struct 2734 * @buf: buffer 2735 * 2736 * Return value: 2737 * number of bytes printed to buffer 2738 **/ 2739 static ssize_t ipr_show_adapter_state(struct device *dev, 2740 struct device_attribute *attr, char *buf) 2741 { 2742 struct Scsi_Host *shost = class_to_shost(dev); 2743 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2744 unsigned long lock_flags = 0; 2745 int len; 2746 2747 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2748 if (ioa_cfg->ioa_is_dead) 2749 len = snprintf(buf, PAGE_SIZE, "offline\n"); 2750 else 2751 len = snprintf(buf, PAGE_SIZE, "online\n"); 2752 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2753 return len; 2754 } 2755 2756 /** 2757 * ipr_store_adapter_state - Change adapter state 2758 * @dev: device struct 2759 * @buf: buffer 2760 * @count: buffer size 2761 * 2762 * This function will change the adapter's state. 2763 * 2764 * Return value: 2765 * count on success / other on failure 2766 **/ 2767 static ssize_t ipr_store_adapter_state(struct device *dev, 2768 struct device_attribute *attr, 2769 const char *buf, size_t count) 2770 { 2771 struct Scsi_Host *shost = class_to_shost(dev); 2772 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2773 unsigned long lock_flags; 2774 int result = count; 2775 2776 if (!capable(CAP_SYS_ADMIN)) 2777 return -EACCES; 2778 2779 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2780 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) { 2781 ioa_cfg->ioa_is_dead = 0; 2782 ioa_cfg->reset_retries = 0; 2783 ioa_cfg->in_ioa_bringdown = 0; 2784 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2785 } 2786 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2787 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2788 2789 return result; 2790 } 2791 2792 static struct device_attribute ipr_ioa_state_attr = { 2793 .attr = { 2794 .name = "state", 2795 .mode = S_IRUGO | S_IWUSR, 2796 }, 2797 .show = ipr_show_adapter_state, 2798 .store = ipr_store_adapter_state 2799 }; 2800 2801 /** 2802 * ipr_store_reset_adapter - Reset the adapter 2803 * @dev: device struct 2804 * @buf: buffer 2805 * @count: buffer size 2806 * 2807 * This function will reset the adapter. 2808 * 2809 * Return value: 2810 * count on success / other on failure 2811 **/ 2812 static ssize_t ipr_store_reset_adapter(struct device *dev, 2813 struct device_attribute *attr, 2814 const char *buf, size_t count) 2815 { 2816 struct Scsi_Host *shost = class_to_shost(dev); 2817 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2818 unsigned long lock_flags; 2819 int result = count; 2820 2821 if (!capable(CAP_SYS_ADMIN)) 2822 return -EACCES; 2823 2824 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2825 if (!ioa_cfg->in_reset_reload) 2826 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2827 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2828 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2829 2830 return result; 2831 } 2832 2833 static struct device_attribute ipr_ioa_reset_attr = { 2834 .attr = { 2835 .name = "reset_host", 2836 .mode = S_IWUSR, 2837 }, 2838 .store = ipr_store_reset_adapter 2839 }; 2840 2841 /** 2842 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 2843 * @buf_len: buffer length 2844 * 2845 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 2846 * list to use for microcode download 2847 * 2848 * Return value: 2849 * pointer to sglist / NULL on failure 2850 **/ 2851 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 2852 { 2853 int sg_size, order, bsize_elem, num_elem, i, j; 2854 struct ipr_sglist *sglist; 2855 struct scatterlist *scatterlist; 2856 struct page *page; 2857 2858 /* Get the minimum size per scatter/gather element */ 2859 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 2860 2861 /* Get the actual size per element */ 2862 order = get_order(sg_size); 2863 2864 /* Determine the actual number of bytes per element */ 2865 bsize_elem = PAGE_SIZE * (1 << order); 2866 2867 /* Determine the actual number of sg entries needed */ 2868 if (buf_len % bsize_elem) 2869 num_elem = (buf_len / bsize_elem) + 1; 2870 else 2871 num_elem = buf_len / bsize_elem; 2872 2873 /* Allocate a scatter/gather list for the DMA */ 2874 sglist = kzalloc(sizeof(struct ipr_sglist) + 2875 (sizeof(struct scatterlist) * (num_elem - 1)), 2876 GFP_KERNEL); 2877 2878 if (sglist == NULL) { 2879 ipr_trace; 2880 return NULL; 2881 } 2882 2883 scatterlist = sglist->scatterlist; 2884 sg_init_table(scatterlist, num_elem); 2885 2886 sglist->order = order; 2887 sglist->num_sg = num_elem; 2888 2889 /* Allocate a bunch of sg elements */ 2890 for (i = 0; i < num_elem; i++) { 2891 page = alloc_pages(GFP_KERNEL, order); 2892 if (!page) { 2893 ipr_trace; 2894 2895 /* Free up what we already allocated */ 2896 for (j = i - 1; j >= 0; j--) 2897 __free_pages(sg_page(&scatterlist[j]), order); 2898 kfree(sglist); 2899 return NULL; 2900 } 2901 2902 sg_set_page(&scatterlist[i], page, 0, 0); 2903 } 2904 2905 return sglist; 2906 } 2907 2908 /** 2909 * ipr_free_ucode_buffer - Frees a microcode download buffer 2910 * @p_dnld: scatter/gather list pointer 2911 * 2912 * Free a DMA'able ucode download buffer previously allocated with 2913 * ipr_alloc_ucode_buffer 2914 * 2915 * Return value: 2916 * nothing 2917 **/ 2918 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 2919 { 2920 int i; 2921 2922 for (i = 0; i < sglist->num_sg; i++) 2923 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order); 2924 2925 kfree(sglist); 2926 } 2927 2928 /** 2929 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 2930 * @sglist: scatter/gather list pointer 2931 * @buffer: buffer pointer 2932 * @len: buffer length 2933 * 2934 * Copy a microcode image from a user buffer into a buffer allocated by 2935 * ipr_alloc_ucode_buffer 2936 * 2937 * Return value: 2938 * 0 on success / other on failure 2939 **/ 2940 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 2941 u8 *buffer, u32 len) 2942 { 2943 int bsize_elem, i, result = 0; 2944 struct scatterlist *scatterlist; 2945 void *kaddr; 2946 2947 /* Determine the actual number of bytes per element */ 2948 bsize_elem = PAGE_SIZE * (1 << sglist->order); 2949 2950 scatterlist = sglist->scatterlist; 2951 2952 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { 2953 struct page *page = sg_page(&scatterlist[i]); 2954 2955 kaddr = kmap(page); 2956 memcpy(kaddr, buffer, bsize_elem); 2957 kunmap(page); 2958 2959 scatterlist[i].length = bsize_elem; 2960 2961 if (result != 0) { 2962 ipr_trace; 2963 return result; 2964 } 2965 } 2966 2967 if (len % bsize_elem) { 2968 struct page *page = sg_page(&scatterlist[i]); 2969 2970 kaddr = kmap(page); 2971 memcpy(kaddr, buffer, len % bsize_elem); 2972 kunmap(page); 2973 2974 scatterlist[i].length = len % bsize_elem; 2975 } 2976 2977 sglist->buffer_len = len; 2978 return result; 2979 } 2980 2981 /** 2982 * ipr_build_ucode_ioadl - Build a microcode download IOADL 2983 * @ipr_cmd: ipr command struct 2984 * @sglist: scatter/gather list 2985 * 2986 * Builds a microcode download IOA data list (IOADL). 2987 * 2988 **/ 2989 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, 2990 struct ipr_sglist *sglist) 2991 { 2992 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 2993 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 2994 struct scatterlist *scatterlist = sglist->scatterlist; 2995 int i; 2996 2997 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 2998 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 2999 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len); 3000 ioarcb->write_ioadl_len = 3001 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 3002 3003 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3004 ioadl[i].flags_and_data_len = 3005 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); 3006 ioadl[i].address = 3007 cpu_to_be32(sg_dma_address(&scatterlist[i])); 3008 } 3009 3010 ioadl[i-1].flags_and_data_len |= 3011 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3012 } 3013 3014 /** 3015 * ipr_update_ioa_ucode - Update IOA's microcode 3016 * @ioa_cfg: ioa config struct 3017 * @sglist: scatter/gather list 3018 * 3019 * Initiate an adapter reset to update the IOA's microcode 3020 * 3021 * Return value: 3022 * 0 on success / -EIO on failure 3023 **/ 3024 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, 3025 struct ipr_sglist *sglist) 3026 { 3027 unsigned long lock_flags; 3028 3029 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3030 while(ioa_cfg->in_reset_reload) { 3031 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3032 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3033 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3034 } 3035 3036 if (ioa_cfg->ucode_sglist) { 3037 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3038 dev_err(&ioa_cfg->pdev->dev, 3039 "Microcode download already in progress\n"); 3040 return -EIO; 3041 } 3042 3043 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist, 3044 sglist->num_sg, DMA_TO_DEVICE); 3045 3046 if (!sglist->num_dma_sg) { 3047 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3048 dev_err(&ioa_cfg->pdev->dev, 3049 "Failed to map microcode download buffer!\n"); 3050 return -EIO; 3051 } 3052 3053 ioa_cfg->ucode_sglist = sglist; 3054 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3055 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3056 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3057 3058 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3059 ioa_cfg->ucode_sglist = NULL; 3060 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3061 return 0; 3062 } 3063 3064 /** 3065 * ipr_store_update_fw - Update the firmware on the adapter 3066 * @class_dev: device struct 3067 * @buf: buffer 3068 * @count: buffer size 3069 * 3070 * This function will update the firmware on the adapter. 3071 * 3072 * Return value: 3073 * count on success / other on failure 3074 **/ 3075 static ssize_t ipr_store_update_fw(struct device *dev, 3076 struct device_attribute *attr, 3077 const char *buf, size_t count) 3078 { 3079 struct Scsi_Host *shost = class_to_shost(dev); 3080 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3081 struct ipr_ucode_image_header *image_hdr; 3082 const struct firmware *fw_entry; 3083 struct ipr_sglist *sglist; 3084 char fname[100]; 3085 char *src; 3086 int len, result, dnld_size; 3087 3088 if (!capable(CAP_SYS_ADMIN)) 3089 return -EACCES; 3090 3091 len = snprintf(fname, 99, "%s", buf); 3092 fname[len-1] = '\0'; 3093 3094 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 3095 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 3096 return -EIO; 3097 } 3098 3099 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 3100 3101 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size || 3102 (ioa_cfg->vpd_cbs->page3_data.card_type && 3103 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) { 3104 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n"); 3105 release_firmware(fw_entry); 3106 return -EINVAL; 3107 } 3108 3109 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 3110 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 3111 sglist = ipr_alloc_ucode_buffer(dnld_size); 3112 3113 if (!sglist) { 3114 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 3115 release_firmware(fw_entry); 3116 return -ENOMEM; 3117 } 3118 3119 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 3120 3121 if (result) { 3122 dev_err(&ioa_cfg->pdev->dev, 3123 "Microcode buffer copy to DMA buffer failed\n"); 3124 goto out; 3125 } 3126 3127 result = ipr_update_ioa_ucode(ioa_cfg, sglist); 3128 3129 if (!result) 3130 result = count; 3131 out: 3132 ipr_free_ucode_buffer(sglist); 3133 release_firmware(fw_entry); 3134 return result; 3135 } 3136 3137 static struct device_attribute ipr_update_fw_attr = { 3138 .attr = { 3139 .name = "update_fw", 3140 .mode = S_IWUSR, 3141 }, 3142 .store = ipr_store_update_fw 3143 }; 3144 3145 static struct device_attribute *ipr_ioa_attrs[] = { 3146 &ipr_fw_version_attr, 3147 &ipr_log_level_attr, 3148 &ipr_diagnostics_attr, 3149 &ipr_ioa_state_attr, 3150 &ipr_ioa_reset_attr, 3151 &ipr_update_fw_attr, 3152 &ipr_ioa_cache_attr, 3153 NULL, 3154 }; 3155 3156 #ifdef CONFIG_SCSI_IPR_DUMP 3157 /** 3158 * ipr_read_dump - Dump the adapter 3159 * @kobj: kobject struct 3160 * @bin_attr: bin_attribute struct 3161 * @buf: buffer 3162 * @off: offset 3163 * @count: buffer size 3164 * 3165 * Return value: 3166 * number of bytes printed to buffer 3167 **/ 3168 static ssize_t ipr_read_dump(struct kobject *kobj, 3169 struct bin_attribute *bin_attr, 3170 char *buf, loff_t off, size_t count) 3171 { 3172 struct device *cdev = container_of(kobj, struct device, kobj); 3173 struct Scsi_Host *shost = class_to_shost(cdev); 3174 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3175 struct ipr_dump *dump; 3176 unsigned long lock_flags = 0; 3177 char *src; 3178 int len; 3179 size_t rc = count; 3180 3181 if (!capable(CAP_SYS_ADMIN)) 3182 return -EACCES; 3183 3184 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3185 dump = ioa_cfg->dump; 3186 3187 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 3188 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3189 return 0; 3190 } 3191 kref_get(&dump->kref); 3192 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3193 3194 if (off > dump->driver_dump.hdr.len) { 3195 kref_put(&dump->kref, ipr_release_dump); 3196 return 0; 3197 } 3198 3199 if (off + count > dump->driver_dump.hdr.len) { 3200 count = dump->driver_dump.hdr.len - off; 3201 rc = count; 3202 } 3203 3204 if (count && off < sizeof(dump->driver_dump)) { 3205 if (off + count > sizeof(dump->driver_dump)) 3206 len = sizeof(dump->driver_dump) - off; 3207 else 3208 len = count; 3209 src = (u8 *)&dump->driver_dump + off; 3210 memcpy(buf, src, len); 3211 buf += len; 3212 off += len; 3213 count -= len; 3214 } 3215 3216 off -= sizeof(dump->driver_dump); 3217 3218 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) { 3219 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data)) 3220 len = offsetof(struct ipr_ioa_dump, ioa_data) - off; 3221 else 3222 len = count; 3223 src = (u8 *)&dump->ioa_dump + off; 3224 memcpy(buf, src, len); 3225 buf += len; 3226 off += len; 3227 count -= len; 3228 } 3229 3230 off -= offsetof(struct ipr_ioa_dump, ioa_data); 3231 3232 while (count) { 3233 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 3234 len = PAGE_ALIGN(off) - off; 3235 else 3236 len = count; 3237 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 3238 src += off & ~PAGE_MASK; 3239 memcpy(buf, src, len); 3240 buf += len; 3241 off += len; 3242 count -= len; 3243 } 3244 3245 kref_put(&dump->kref, ipr_release_dump); 3246 return rc; 3247 } 3248 3249 /** 3250 * ipr_alloc_dump - Prepare for adapter dump 3251 * @ioa_cfg: ioa config struct 3252 * 3253 * Return value: 3254 * 0 on success / other on failure 3255 **/ 3256 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 3257 { 3258 struct ipr_dump *dump; 3259 unsigned long lock_flags = 0; 3260 3261 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); 3262 3263 if (!dump) { 3264 ipr_err("Dump memory allocation failed\n"); 3265 return -ENOMEM; 3266 } 3267 3268 kref_init(&dump->kref); 3269 dump->ioa_cfg = ioa_cfg; 3270 3271 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3272 3273 if (INACTIVE != ioa_cfg->sdt_state) { 3274 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3275 kfree(dump); 3276 return 0; 3277 } 3278 3279 ioa_cfg->dump = dump; 3280 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 3281 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) { 3282 ioa_cfg->dump_taken = 1; 3283 schedule_work(&ioa_cfg->work_q); 3284 } 3285 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3286 3287 return 0; 3288 } 3289 3290 /** 3291 * ipr_free_dump - Free adapter dump memory 3292 * @ioa_cfg: ioa config struct 3293 * 3294 * Return value: 3295 * 0 on success / other on failure 3296 **/ 3297 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 3298 { 3299 struct ipr_dump *dump; 3300 unsigned long lock_flags = 0; 3301 3302 ENTER; 3303 3304 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3305 dump = ioa_cfg->dump; 3306 if (!dump) { 3307 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3308 return 0; 3309 } 3310 3311 ioa_cfg->dump = NULL; 3312 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3313 3314 kref_put(&dump->kref, ipr_release_dump); 3315 3316 LEAVE; 3317 return 0; 3318 } 3319 3320 /** 3321 * ipr_write_dump - Setup dump state of adapter 3322 * @kobj: kobject struct 3323 * @bin_attr: bin_attribute struct 3324 * @buf: buffer 3325 * @off: offset 3326 * @count: buffer size 3327 * 3328 * Return value: 3329 * number of bytes printed to buffer 3330 **/ 3331 static ssize_t ipr_write_dump(struct kobject *kobj, 3332 struct bin_attribute *bin_attr, 3333 char *buf, loff_t off, size_t count) 3334 { 3335 struct device *cdev = container_of(kobj, struct device, kobj); 3336 struct Scsi_Host *shost = class_to_shost(cdev); 3337 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3338 int rc; 3339 3340 if (!capable(CAP_SYS_ADMIN)) 3341 return -EACCES; 3342 3343 if (buf[0] == '1') 3344 rc = ipr_alloc_dump(ioa_cfg); 3345 else if (buf[0] == '0') 3346 rc = ipr_free_dump(ioa_cfg); 3347 else 3348 return -EINVAL; 3349 3350 if (rc) 3351 return rc; 3352 else 3353 return count; 3354 } 3355 3356 static struct bin_attribute ipr_dump_attr = { 3357 .attr = { 3358 .name = "dump", 3359 .mode = S_IRUSR | S_IWUSR, 3360 }, 3361 .size = 0, 3362 .read = ipr_read_dump, 3363 .write = ipr_write_dump 3364 }; 3365 #else 3366 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 3367 #endif 3368 3369 /** 3370 * ipr_change_queue_depth - Change the device's queue depth 3371 * @sdev: scsi device struct 3372 * @qdepth: depth to set 3373 * 3374 * Return value: 3375 * actual depth set 3376 **/ 3377 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) 3378 { 3379 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3380 struct ipr_resource_entry *res; 3381 unsigned long lock_flags = 0; 3382 3383 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3384 res = (struct ipr_resource_entry *)sdev->hostdata; 3385 3386 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN) 3387 qdepth = IPR_MAX_CMD_PER_ATA_LUN; 3388 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3389 3390 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); 3391 return sdev->queue_depth; 3392 } 3393 3394 /** 3395 * ipr_change_queue_type - Change the device's queue type 3396 * @dsev: scsi device struct 3397 * @tag_type: type of tags to use 3398 * 3399 * Return value: 3400 * actual queue type set 3401 **/ 3402 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type) 3403 { 3404 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3405 struct ipr_resource_entry *res; 3406 unsigned long lock_flags = 0; 3407 3408 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3409 res = (struct ipr_resource_entry *)sdev->hostdata; 3410 3411 if (res) { 3412 if (ipr_is_gscsi(res) && sdev->tagged_supported) { 3413 /* 3414 * We don't bother quiescing the device here since the 3415 * adapter firmware does it for us. 3416 */ 3417 scsi_set_tag_type(sdev, tag_type); 3418 3419 if (tag_type) 3420 scsi_activate_tcq(sdev, sdev->queue_depth); 3421 else 3422 scsi_deactivate_tcq(sdev, sdev->queue_depth); 3423 } else 3424 tag_type = 0; 3425 } else 3426 tag_type = 0; 3427 3428 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3429 return tag_type; 3430 } 3431 3432 /** 3433 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 3434 * @dev: device struct 3435 * @buf: buffer 3436 * 3437 * Return value: 3438 * number of bytes printed to buffer 3439 **/ 3440 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) 3441 { 3442 struct scsi_device *sdev = to_scsi_device(dev); 3443 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3444 struct ipr_resource_entry *res; 3445 unsigned long lock_flags = 0; 3446 ssize_t len = -ENXIO; 3447 3448 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3449 res = (struct ipr_resource_entry *)sdev->hostdata; 3450 if (res) 3451 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle); 3452 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3453 return len; 3454 } 3455 3456 static struct device_attribute ipr_adapter_handle_attr = { 3457 .attr = { 3458 .name = "adapter_handle", 3459 .mode = S_IRUSR, 3460 }, 3461 .show = ipr_show_adapter_handle 3462 }; 3463 3464 static struct device_attribute *ipr_dev_attrs[] = { 3465 &ipr_adapter_handle_attr, 3466 NULL, 3467 }; 3468 3469 /** 3470 * ipr_biosparam - Return the HSC mapping 3471 * @sdev: scsi device struct 3472 * @block_device: block device pointer 3473 * @capacity: capacity of the device 3474 * @parm: Array containing returned HSC values. 3475 * 3476 * This function generates the HSC parms that fdisk uses. 3477 * We want to make sure we return something that places partitions 3478 * on 4k boundaries for best performance with the IOA. 3479 * 3480 * Return value: 3481 * 0 on success 3482 **/ 3483 static int ipr_biosparam(struct scsi_device *sdev, 3484 struct block_device *block_device, 3485 sector_t capacity, int *parm) 3486 { 3487 int heads, sectors; 3488 sector_t cylinders; 3489 3490 heads = 128; 3491 sectors = 32; 3492 3493 cylinders = capacity; 3494 sector_div(cylinders, (128 * 32)); 3495 3496 /* return result */ 3497 parm[0] = heads; 3498 parm[1] = sectors; 3499 parm[2] = cylinders; 3500 3501 return 0; 3502 } 3503 3504 /** 3505 * ipr_find_starget - Find target based on bus/target. 3506 * @starget: scsi target struct 3507 * 3508 * Return value: 3509 * resource entry pointer if found / NULL if not found 3510 **/ 3511 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget) 3512 { 3513 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 3514 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 3515 struct ipr_resource_entry *res; 3516 3517 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3518 if ((res->cfgte.res_addr.bus == starget->channel) && 3519 (res->cfgte.res_addr.target == starget->id) && 3520 (res->cfgte.res_addr.lun == 0)) { 3521 return res; 3522 } 3523 } 3524 3525 return NULL; 3526 } 3527 3528 static struct ata_port_info sata_port_info; 3529 3530 /** 3531 * ipr_target_alloc - Prepare for commands to a SCSI target 3532 * @starget: scsi target struct 3533 * 3534 * If the device is a SATA device, this function allocates an 3535 * ATA port with libata, else it does nothing. 3536 * 3537 * Return value: 3538 * 0 on success / non-0 on failure 3539 **/ 3540 static int ipr_target_alloc(struct scsi_target *starget) 3541 { 3542 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 3543 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 3544 struct ipr_sata_port *sata_port; 3545 struct ata_port *ap; 3546 struct ipr_resource_entry *res; 3547 unsigned long lock_flags; 3548 3549 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3550 res = ipr_find_starget(starget); 3551 starget->hostdata = NULL; 3552 3553 if (res && ipr_is_gata(res)) { 3554 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3555 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL); 3556 if (!sata_port) 3557 return -ENOMEM; 3558 3559 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost); 3560 if (ap) { 3561 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3562 sata_port->ioa_cfg = ioa_cfg; 3563 sata_port->ap = ap; 3564 sata_port->res = res; 3565 3566 res->sata_port = sata_port; 3567 ap->private_data = sata_port; 3568 starget->hostdata = sata_port; 3569 } else { 3570 kfree(sata_port); 3571 return -ENOMEM; 3572 } 3573 } 3574 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3575 3576 return 0; 3577 } 3578 3579 /** 3580 * ipr_target_destroy - Destroy a SCSI target 3581 * @starget: scsi target struct 3582 * 3583 * If the device was a SATA device, this function frees the libata 3584 * ATA port, else it does nothing. 3585 * 3586 **/ 3587 static void ipr_target_destroy(struct scsi_target *starget) 3588 { 3589 struct ipr_sata_port *sata_port = starget->hostdata; 3590 3591 if (sata_port) { 3592 starget->hostdata = NULL; 3593 ata_sas_port_destroy(sata_port->ap); 3594 kfree(sata_port); 3595 } 3596 } 3597 3598 /** 3599 * ipr_find_sdev - Find device based on bus/target/lun. 3600 * @sdev: scsi device struct 3601 * 3602 * Return value: 3603 * resource entry pointer if found / NULL if not found 3604 **/ 3605 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev) 3606 { 3607 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3608 struct ipr_resource_entry *res; 3609 3610 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3611 if ((res->cfgte.res_addr.bus == sdev->channel) && 3612 (res->cfgte.res_addr.target == sdev->id) && 3613 (res->cfgte.res_addr.lun == sdev->lun)) 3614 return res; 3615 } 3616 3617 return NULL; 3618 } 3619 3620 /** 3621 * ipr_slave_destroy - Unconfigure a SCSI device 3622 * @sdev: scsi device struct 3623 * 3624 * Return value: 3625 * nothing 3626 **/ 3627 static void ipr_slave_destroy(struct scsi_device *sdev) 3628 { 3629 struct ipr_resource_entry *res; 3630 struct ipr_ioa_cfg *ioa_cfg; 3631 unsigned long lock_flags = 0; 3632 3633 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3634 3635 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3636 res = (struct ipr_resource_entry *) sdev->hostdata; 3637 if (res) { 3638 if (res->sata_port) 3639 ata_port_disable(res->sata_port->ap); 3640 sdev->hostdata = NULL; 3641 res->sdev = NULL; 3642 res->sata_port = NULL; 3643 } 3644 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3645 } 3646 3647 /** 3648 * ipr_slave_configure - Configure a SCSI device 3649 * @sdev: scsi device struct 3650 * 3651 * This function configures the specified scsi device. 3652 * 3653 * Return value: 3654 * 0 on success 3655 **/ 3656 static int ipr_slave_configure(struct scsi_device *sdev) 3657 { 3658 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3659 struct ipr_resource_entry *res; 3660 unsigned long lock_flags = 0; 3661 3662 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3663 res = sdev->hostdata; 3664 if (res) { 3665 if (ipr_is_af_dasd_device(res)) 3666 sdev->type = TYPE_RAID; 3667 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { 3668 sdev->scsi_level = 4; 3669 sdev->no_uld_attach = 1; 3670 } 3671 if (ipr_is_vset_device(res)) { 3672 sdev->timeout = IPR_VSET_RW_TIMEOUT; 3673 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); 3674 } 3675 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)) 3676 sdev->allow_restart = 1; 3677 if (ipr_is_gata(res) && res->sata_port) { 3678 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN); 3679 ata_sas_slave_configure(sdev, res->sata_port->ap); 3680 } else { 3681 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); 3682 } 3683 } 3684 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3685 return 0; 3686 } 3687 3688 /** 3689 * ipr_ata_slave_alloc - Prepare for commands to a SATA device 3690 * @sdev: scsi device struct 3691 * 3692 * This function initializes an ATA port so that future commands 3693 * sent through queuecommand will work. 3694 * 3695 * Return value: 3696 * 0 on success 3697 **/ 3698 static int ipr_ata_slave_alloc(struct scsi_device *sdev) 3699 { 3700 struct ipr_sata_port *sata_port = NULL; 3701 int rc = -ENXIO; 3702 3703 ENTER; 3704 if (sdev->sdev_target) 3705 sata_port = sdev->sdev_target->hostdata; 3706 if (sata_port) 3707 rc = ata_sas_port_init(sata_port->ap); 3708 if (rc) 3709 ipr_slave_destroy(sdev); 3710 3711 LEAVE; 3712 return rc; 3713 } 3714 3715 /** 3716 * ipr_slave_alloc - Prepare for commands to a device. 3717 * @sdev: scsi device struct 3718 * 3719 * This function saves a pointer to the resource entry 3720 * in the scsi device struct if the device exists. We 3721 * can then use this pointer in ipr_queuecommand when 3722 * handling new commands. 3723 * 3724 * Return value: 3725 * 0 on success / -ENXIO if device does not exist 3726 **/ 3727 static int ipr_slave_alloc(struct scsi_device *sdev) 3728 { 3729 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3730 struct ipr_resource_entry *res; 3731 unsigned long lock_flags; 3732 int rc = -ENXIO; 3733 3734 sdev->hostdata = NULL; 3735 3736 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3737 3738 res = ipr_find_sdev(sdev); 3739 if (res) { 3740 res->sdev = sdev; 3741 res->add_to_ml = 0; 3742 res->in_erp = 0; 3743 sdev->hostdata = res; 3744 if (!ipr_is_naca_model(res)) 3745 res->needs_sync_complete = 1; 3746 rc = 0; 3747 if (ipr_is_gata(res)) { 3748 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3749 return ipr_ata_slave_alloc(sdev); 3750 } 3751 } 3752 3753 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3754 3755 return rc; 3756 } 3757 3758 /** 3759 * ipr_eh_host_reset - Reset the host adapter 3760 * @scsi_cmd: scsi command struct 3761 * 3762 * Return value: 3763 * SUCCESS / FAILED 3764 **/ 3765 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd) 3766 { 3767 struct ipr_ioa_cfg *ioa_cfg; 3768 int rc; 3769 3770 ENTER; 3771 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 3772 3773 dev_err(&ioa_cfg->pdev->dev, 3774 "Adapter being reset as a result of error recovery.\n"); 3775 3776 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 3777 ioa_cfg->sdt_state = GET_DUMP; 3778 3779 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV); 3780 3781 LEAVE; 3782 return rc; 3783 } 3784 3785 static int ipr_eh_host_reset(struct scsi_cmnd * cmd) 3786 { 3787 int rc; 3788 3789 spin_lock_irq(cmd->device->host->host_lock); 3790 rc = __ipr_eh_host_reset(cmd); 3791 spin_unlock_irq(cmd->device->host->host_lock); 3792 3793 return rc; 3794 } 3795 3796 /** 3797 * ipr_device_reset - Reset the device 3798 * @ioa_cfg: ioa config struct 3799 * @res: resource entry struct 3800 * 3801 * This function issues a device reset to the affected device. 3802 * If the device is a SCSI device, a LUN reset will be sent 3803 * to the device first. If that does not work, a target reset 3804 * will be sent. If the device is a SATA device, a PHY reset will 3805 * be sent. 3806 * 3807 * Return value: 3808 * 0 on success / non-zero on failure 3809 **/ 3810 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, 3811 struct ipr_resource_entry *res) 3812 { 3813 struct ipr_cmnd *ipr_cmd; 3814 struct ipr_ioarcb *ioarcb; 3815 struct ipr_cmd_pkt *cmd_pkt; 3816 struct ipr_ioarcb_ata_regs *regs; 3817 u32 ioasc; 3818 3819 ENTER; 3820 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3821 ioarcb = &ipr_cmd->ioarcb; 3822 cmd_pkt = &ioarcb->cmd_pkt; 3823 regs = &ioarcb->add_data.u.regs; 3824 3825 ioarcb->res_handle = res->cfgte.res_handle; 3826 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3827 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 3828 if (ipr_is_gata(res)) { 3829 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET; 3830 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags)); 3831 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 3832 } 3833 3834 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 3835 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3836 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3837 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) 3838 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata, 3839 sizeof(struct ipr_ioasa_gata)); 3840 3841 LEAVE; 3842 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0); 3843 } 3844 3845 /** 3846 * ipr_sata_reset - Reset the SATA port 3847 * @link: SATA link to reset 3848 * @classes: class of the attached device 3849 * 3850 * This function issues a SATA phy reset to the affected ATA link. 3851 * 3852 * Return value: 3853 * 0 on success / non-zero on failure 3854 **/ 3855 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes, 3856 unsigned long deadline) 3857 { 3858 struct ipr_sata_port *sata_port = link->ap->private_data; 3859 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 3860 struct ipr_resource_entry *res; 3861 unsigned long lock_flags = 0; 3862 int rc = -ENXIO; 3863 3864 ENTER; 3865 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3866 while(ioa_cfg->in_reset_reload) { 3867 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3868 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3869 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3870 } 3871 3872 res = sata_port->res; 3873 if (res) { 3874 rc = ipr_device_reset(ioa_cfg, res); 3875 switch(res->cfgte.proto) { 3876 case IPR_PROTO_SATA: 3877 case IPR_PROTO_SAS_STP: 3878 *classes = ATA_DEV_ATA; 3879 break; 3880 case IPR_PROTO_SATA_ATAPI: 3881 case IPR_PROTO_SAS_STP_ATAPI: 3882 *classes = ATA_DEV_ATAPI; 3883 break; 3884 default: 3885 *classes = ATA_DEV_UNKNOWN; 3886 break; 3887 }; 3888 } 3889 3890 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3891 LEAVE; 3892 return rc; 3893 } 3894 3895 /** 3896 * ipr_eh_dev_reset - Reset the device 3897 * @scsi_cmd: scsi command struct 3898 * 3899 * This function issues a device reset to the affected device. 3900 * A LUN reset will be sent to the device first. If that does 3901 * not work, a target reset will be sent. 3902 * 3903 * Return value: 3904 * SUCCESS / FAILED 3905 **/ 3906 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) 3907 { 3908 struct ipr_cmnd *ipr_cmd; 3909 struct ipr_ioa_cfg *ioa_cfg; 3910 struct ipr_resource_entry *res; 3911 struct ata_port *ap; 3912 int rc = 0; 3913 3914 ENTER; 3915 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 3916 res = scsi_cmd->device->hostdata; 3917 3918 if (!res) 3919 return FAILED; 3920 3921 /* 3922 * If we are currently going through reset/reload, return failed. This will force the 3923 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 3924 * reset to complete 3925 */ 3926 if (ioa_cfg->in_reset_reload) 3927 return FAILED; 3928 if (ioa_cfg->ioa_is_dead) 3929 return FAILED; 3930 3931 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3932 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) { 3933 if (ipr_cmd->scsi_cmd) 3934 ipr_cmd->done = ipr_scsi_eh_done; 3935 if (ipr_cmd->qc) 3936 ipr_cmd->done = ipr_sata_eh_done; 3937 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) { 3938 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT; 3939 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED; 3940 } 3941 } 3942 } 3943 3944 res->resetting_device = 1; 3945 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); 3946 3947 if (ipr_is_gata(res) && res->sata_port) { 3948 ap = res->sata_port->ap; 3949 spin_unlock_irq(scsi_cmd->device->host->host_lock); 3950 ata_std_error_handler(ap); 3951 spin_lock_irq(scsi_cmd->device->host->host_lock); 3952 3953 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3954 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) { 3955 rc = -EIO; 3956 break; 3957 } 3958 } 3959 } else 3960 rc = ipr_device_reset(ioa_cfg, res); 3961 res->resetting_device = 0; 3962 3963 LEAVE; 3964 return (rc ? FAILED : SUCCESS); 3965 } 3966 3967 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd) 3968 { 3969 int rc; 3970 3971 spin_lock_irq(cmd->device->host->host_lock); 3972 rc = __ipr_eh_dev_reset(cmd); 3973 spin_unlock_irq(cmd->device->host->host_lock); 3974 3975 return rc; 3976 } 3977 3978 /** 3979 * ipr_bus_reset_done - Op done function for bus reset. 3980 * @ipr_cmd: ipr command struct 3981 * 3982 * This function is the op done function for a bus reset 3983 * 3984 * Return value: 3985 * none 3986 **/ 3987 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 3988 { 3989 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3990 struct ipr_resource_entry *res; 3991 3992 ENTER; 3993 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3994 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle, 3995 sizeof(res->cfgte.res_handle))) { 3996 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus); 3997 break; 3998 } 3999 } 4000 4001 /* 4002 * If abort has not completed, indicate the reset has, else call the 4003 * abort's done function to wake the sleeping eh thread 4004 */ 4005 if (ipr_cmd->sibling->sibling) 4006 ipr_cmd->sibling->sibling = NULL; 4007 else 4008 ipr_cmd->sibling->done(ipr_cmd->sibling); 4009 4010 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4011 LEAVE; 4012 } 4013 4014 /** 4015 * ipr_abort_timeout - An abort task has timed out 4016 * @ipr_cmd: ipr command struct 4017 * 4018 * This function handles when an abort task times out. If this 4019 * happens we issue a bus reset since we have resources tied 4020 * up that must be freed before returning to the midlayer. 4021 * 4022 * Return value: 4023 * none 4024 **/ 4025 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 4026 { 4027 struct ipr_cmnd *reset_cmd; 4028 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4029 struct ipr_cmd_pkt *cmd_pkt; 4030 unsigned long lock_flags = 0; 4031 4032 ENTER; 4033 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4034 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 4035 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4036 return; 4037 } 4038 4039 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n"); 4040 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4041 ipr_cmd->sibling = reset_cmd; 4042 reset_cmd->sibling = ipr_cmd; 4043 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 4044 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 4045 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4046 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 4047 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 4048 4049 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 4050 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4051 LEAVE; 4052 } 4053 4054 /** 4055 * ipr_cancel_op - Cancel specified op 4056 * @scsi_cmd: scsi command struct 4057 * 4058 * This function cancels specified op. 4059 * 4060 * Return value: 4061 * SUCCESS / FAILED 4062 **/ 4063 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) 4064 { 4065 struct ipr_cmnd *ipr_cmd; 4066 struct ipr_ioa_cfg *ioa_cfg; 4067 struct ipr_resource_entry *res; 4068 struct ipr_cmd_pkt *cmd_pkt; 4069 u32 ioasc; 4070 int op_found = 0; 4071 4072 ENTER; 4073 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 4074 res = scsi_cmd->device->hostdata; 4075 4076 /* If we are currently going through reset/reload, return failed. 4077 * This will force the mid-layer to call ipr_eh_host_reset, 4078 * which will then go to sleep and wait for the reset to complete 4079 */ 4080 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) 4081 return FAILED; 4082 if (!res || !ipr_is_gscsi(res)) 4083 return FAILED; 4084 4085 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4086 if (ipr_cmd->scsi_cmd == scsi_cmd) { 4087 ipr_cmd->done = ipr_scsi_eh_done; 4088 op_found = 1; 4089 break; 4090 } 4091 } 4092 4093 if (!op_found) 4094 return SUCCESS; 4095 4096 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4097 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 4098 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4099 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4100 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4101 ipr_cmd->u.sdev = scsi_cmd->device; 4102 4103 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n", 4104 scsi_cmd->cmnd[0]); 4105 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 4106 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4107 4108 /* 4109 * If the abort task timed out and we sent a bus reset, we will get 4110 * one the following responses to the abort 4111 */ 4112 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 4113 ioasc = 0; 4114 ipr_trace; 4115 } 4116 4117 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4118 if (!ipr_is_naca_model(res)) 4119 res->needs_sync_complete = 1; 4120 4121 LEAVE; 4122 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); 4123 } 4124 4125 /** 4126 * ipr_eh_abort - Abort a single op 4127 * @scsi_cmd: scsi command struct 4128 * 4129 * Return value: 4130 * SUCCESS / FAILED 4131 **/ 4132 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) 4133 { 4134 unsigned long flags; 4135 int rc; 4136 4137 ENTER; 4138 4139 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 4140 rc = ipr_cancel_op(scsi_cmd); 4141 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 4142 4143 LEAVE; 4144 return rc; 4145 } 4146 4147 /** 4148 * ipr_handle_other_interrupt - Handle "other" interrupts 4149 * @ioa_cfg: ioa config struct 4150 * @int_reg: interrupt register 4151 * 4152 * Return value: 4153 * IRQ_NONE / IRQ_HANDLED 4154 **/ 4155 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 4156 volatile u32 int_reg) 4157 { 4158 irqreturn_t rc = IRQ_HANDLED; 4159 4160 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 4161 /* Mask the interrupt */ 4162 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 4163 4164 /* Clear the interrupt */ 4165 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); 4166 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 4167 4168 list_del(&ioa_cfg->reset_cmd->queue); 4169 del_timer(&ioa_cfg->reset_cmd->timer); 4170 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 4171 } else { 4172 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 4173 ioa_cfg->ioa_unit_checked = 1; 4174 else 4175 dev_err(&ioa_cfg->pdev->dev, 4176 "Permanent IOA failure. 0x%08X\n", int_reg); 4177 4178 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4179 ioa_cfg->sdt_state = GET_DUMP; 4180 4181 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 4182 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4183 } 4184 4185 return rc; 4186 } 4187 4188 /** 4189 * ipr_isr - Interrupt service routine 4190 * @irq: irq number 4191 * @devp: pointer to ioa config struct 4192 * 4193 * Return value: 4194 * IRQ_NONE / IRQ_HANDLED 4195 **/ 4196 static irqreturn_t ipr_isr(int irq, void *devp) 4197 { 4198 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 4199 unsigned long lock_flags = 0; 4200 volatile u32 int_reg, int_mask_reg; 4201 u32 ioasc; 4202 u16 cmd_index; 4203 struct ipr_cmnd *ipr_cmd; 4204 irqreturn_t rc = IRQ_NONE; 4205 4206 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4207 4208 /* If interrupts are disabled, ignore the interrupt */ 4209 if (!ioa_cfg->allow_interrupts) { 4210 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4211 return IRQ_NONE; 4212 } 4213 4214 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 4215 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 4216 4217 /* If an interrupt on the adapter did not occur, ignore it */ 4218 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) { 4219 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4220 return IRQ_NONE; 4221 } 4222 4223 while (1) { 4224 ipr_cmd = NULL; 4225 4226 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 4227 ioa_cfg->toggle_bit) { 4228 4229 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & 4230 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 4231 4232 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { 4233 ioa_cfg->errors_logged++; 4234 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n"); 4235 4236 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4237 ioa_cfg->sdt_state = GET_DUMP; 4238 4239 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4240 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4241 return IRQ_HANDLED; 4242 } 4243 4244 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 4245 4246 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4247 4248 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 4249 4250 list_del(&ipr_cmd->queue); 4251 del_timer(&ipr_cmd->timer); 4252 ipr_cmd->done(ipr_cmd); 4253 4254 rc = IRQ_HANDLED; 4255 4256 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { 4257 ioa_cfg->hrrq_curr++; 4258 } else { 4259 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 4260 ioa_cfg->toggle_bit ^= 1u; 4261 } 4262 } 4263 4264 if (ipr_cmd != NULL) { 4265 /* Clear the PCI interrupt */ 4266 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg); 4267 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 4268 } else 4269 break; 4270 } 4271 4272 if (unlikely(rc == IRQ_NONE)) 4273 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 4274 4275 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4276 return rc; 4277 } 4278 4279 /** 4280 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 4281 * @ioa_cfg: ioa config struct 4282 * @ipr_cmd: ipr command struct 4283 * 4284 * Return value: 4285 * 0 on success / -1 on failure 4286 **/ 4287 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 4288 struct ipr_cmnd *ipr_cmd) 4289 { 4290 int i, nseg; 4291 struct scatterlist *sg; 4292 u32 length; 4293 u32 ioadl_flags = 0; 4294 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4295 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4296 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4297 4298 length = scsi_bufflen(scsi_cmd); 4299 if (!length) 4300 return 0; 4301 4302 nseg = scsi_dma_map(scsi_cmd); 4303 if (nseg < 0) { 4304 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 4305 return -1; 4306 } 4307 4308 ipr_cmd->dma_use_sg = nseg; 4309 4310 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 4311 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 4312 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4313 ioarcb->write_data_transfer_length = cpu_to_be32(length); 4314 ioarcb->write_ioadl_len = 4315 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 4316 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 4317 ioadl_flags = IPR_IOADL_FLAGS_READ; 4318 ioarcb->read_data_transfer_length = cpu_to_be32(length); 4319 ioarcb->read_ioadl_len = 4320 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 4321 } 4322 4323 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) { 4324 ioadl = ioarcb->add_data.u.ioadl; 4325 ioarcb->write_ioadl_addr = 4326 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) + 4327 offsetof(struct ipr_ioarcb, add_data)); 4328 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 4329 } 4330 4331 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 4332 ioadl[i].flags_and_data_len = 4333 cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 4334 ioadl[i].address = cpu_to_be32(sg_dma_address(sg)); 4335 } 4336 4337 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 4338 return 0; 4339 } 4340 4341 /** 4342 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes 4343 * @scsi_cmd: scsi command struct 4344 * 4345 * Return value: 4346 * task attributes 4347 **/ 4348 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) 4349 { 4350 u8 tag[2]; 4351 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; 4352 4353 if (scsi_populate_tag_msg(scsi_cmd, tag)) { 4354 switch (tag[0]) { 4355 case MSG_SIMPLE_TAG: 4356 rc = IPR_FLAGS_LO_SIMPLE_TASK; 4357 break; 4358 case MSG_HEAD_TAG: 4359 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; 4360 break; 4361 case MSG_ORDERED_TAG: 4362 rc = IPR_FLAGS_LO_ORDERED_TASK; 4363 break; 4364 }; 4365 } 4366 4367 return rc; 4368 } 4369 4370 /** 4371 * ipr_erp_done - Process completion of ERP for a device 4372 * @ipr_cmd: ipr command struct 4373 * 4374 * This function copies the sense buffer into the scsi_cmd 4375 * struct and pushes the scsi_done function. 4376 * 4377 * Return value: 4378 * nothing 4379 **/ 4380 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 4381 { 4382 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4383 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4384 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4385 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4386 4387 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 4388 scsi_cmd->result |= (DID_ERROR << 16); 4389 scmd_printk(KERN_ERR, scsi_cmd, 4390 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 4391 } else { 4392 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 4393 SCSI_SENSE_BUFFERSIZE); 4394 } 4395 4396 if (res) { 4397 if (!ipr_is_naca_model(res)) 4398 res->needs_sync_complete = 1; 4399 res->in_erp = 0; 4400 } 4401 scsi_dma_unmap(ipr_cmd->scsi_cmd); 4402 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4403 scsi_cmd->scsi_done(scsi_cmd); 4404 } 4405 4406 /** 4407 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 4408 * @ipr_cmd: ipr command struct 4409 * 4410 * Return value: 4411 * none 4412 **/ 4413 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 4414 { 4415 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4416 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4417 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr); 4418 4419 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 4420 ioarcb->write_data_transfer_length = 0; 4421 ioarcb->read_data_transfer_length = 0; 4422 ioarcb->write_ioadl_len = 0; 4423 ioarcb->read_ioadl_len = 0; 4424 ioasa->ioasc = 0; 4425 ioasa->residual_data_len = 0; 4426 ioarcb->write_ioadl_addr = 4427 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); 4428 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 4429 } 4430 4431 /** 4432 * ipr_erp_request_sense - Send request sense to a device 4433 * @ipr_cmd: ipr command struct 4434 * 4435 * This function sends a request sense to a device as a result 4436 * of a check condition. 4437 * 4438 * Return value: 4439 * nothing 4440 **/ 4441 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 4442 { 4443 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4444 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4445 4446 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 4447 ipr_erp_done(ipr_cmd); 4448 return; 4449 } 4450 4451 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 4452 4453 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 4454 cmd_pkt->cdb[0] = REQUEST_SENSE; 4455 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 4456 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 4457 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 4458 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 4459 4460 ipr_cmd->ioadl[0].flags_and_data_len = 4461 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE); 4462 ipr_cmd->ioadl[0].address = 4463 cpu_to_be32(ipr_cmd->sense_buffer_dma); 4464 4465 ipr_cmd->ioarcb.read_ioadl_len = 4466 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4467 ipr_cmd->ioarcb.read_data_transfer_length = 4468 cpu_to_be32(SCSI_SENSE_BUFFERSIZE); 4469 4470 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 4471 IPR_REQUEST_SENSE_TIMEOUT * 2); 4472 } 4473 4474 /** 4475 * ipr_erp_cancel_all - Send cancel all to a device 4476 * @ipr_cmd: ipr command struct 4477 * 4478 * This function sends a cancel all to a device to clear the 4479 * queue. If we are running TCQ on the device, QERR is set to 1, 4480 * which means all outstanding ops have been dropped on the floor. 4481 * Cancel all will return them to us. 4482 * 4483 * Return value: 4484 * nothing 4485 **/ 4486 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 4487 { 4488 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4489 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4490 struct ipr_cmd_pkt *cmd_pkt; 4491 4492 res->in_erp = 1; 4493 4494 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 4495 4496 if (!scsi_get_tag_type(scsi_cmd->device)) { 4497 ipr_erp_request_sense(ipr_cmd); 4498 return; 4499 } 4500 4501 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4502 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4503 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4504 4505 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 4506 IPR_CANCEL_ALL_TIMEOUT); 4507 } 4508 4509 /** 4510 * ipr_dump_ioasa - Dump contents of IOASA 4511 * @ioa_cfg: ioa config struct 4512 * @ipr_cmd: ipr command struct 4513 * @res: resource entry struct 4514 * 4515 * This function is invoked by the interrupt handler when ops 4516 * fail. It will log the IOASA if appropriate. Only called 4517 * for GPDD ops. 4518 * 4519 * Return value: 4520 * none 4521 **/ 4522 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 4523 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res) 4524 { 4525 int i; 4526 u16 data_len; 4527 u32 ioasc, fd_ioasc; 4528 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4529 __be32 *ioasa_data = (__be32 *)ioasa; 4530 int error_index; 4531 4532 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK; 4533 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK; 4534 4535 if (0 == ioasc) 4536 return; 4537 4538 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 4539 return; 4540 4541 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc) 4542 error_index = ipr_get_error(fd_ioasc); 4543 else 4544 error_index = ipr_get_error(ioasc); 4545 4546 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 4547 /* Don't log an error if the IOA already logged one */ 4548 if (ioasa->ilid != 0) 4549 return; 4550 4551 if (!ipr_is_gscsi(res)) 4552 return; 4553 4554 if (ipr_error_table[error_index].log_ioasa == 0) 4555 return; 4556 } 4557 4558 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error); 4559 4560 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len)) 4561 data_len = sizeof(struct ipr_ioasa); 4562 else 4563 data_len = be16_to_cpu(ioasa->ret_stat_len); 4564 4565 ipr_err("IOASA Dump:\n"); 4566 4567 for (i = 0; i < data_len / 4; i += 4) { 4568 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 4569 be32_to_cpu(ioasa_data[i]), 4570 be32_to_cpu(ioasa_data[i+1]), 4571 be32_to_cpu(ioasa_data[i+2]), 4572 be32_to_cpu(ioasa_data[i+3])); 4573 } 4574 } 4575 4576 /** 4577 * ipr_gen_sense - Generate SCSI sense data from an IOASA 4578 * @ioasa: IOASA 4579 * @sense_buf: sense data buffer 4580 * 4581 * Return value: 4582 * none 4583 **/ 4584 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 4585 { 4586 u32 failing_lba; 4587 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 4588 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 4589 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4590 u32 ioasc = be32_to_cpu(ioasa->ioasc); 4591 4592 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 4593 4594 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 4595 return; 4596 4597 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 4598 4599 if (ipr_is_vset_device(res) && 4600 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 4601 ioasa->u.vset.failing_lba_hi != 0) { 4602 sense_buf[0] = 0x72; 4603 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 4604 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 4605 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 4606 4607 sense_buf[7] = 12; 4608 sense_buf[8] = 0; 4609 sense_buf[9] = 0x0A; 4610 sense_buf[10] = 0x80; 4611 4612 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 4613 4614 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 4615 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 4616 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 4617 sense_buf[15] = failing_lba & 0x000000ff; 4618 4619 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 4620 4621 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 4622 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 4623 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 4624 sense_buf[19] = failing_lba & 0x000000ff; 4625 } else { 4626 sense_buf[0] = 0x70; 4627 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 4628 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 4629 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 4630 4631 /* Illegal request */ 4632 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 4633 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 4634 sense_buf[7] = 10; /* additional length */ 4635 4636 /* IOARCB was in error */ 4637 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 4638 sense_buf[15] = 0xC0; 4639 else /* Parameter data was invalid */ 4640 sense_buf[15] = 0x80; 4641 4642 sense_buf[16] = 4643 ((IPR_FIELD_POINTER_MASK & 4644 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff; 4645 sense_buf[17] = 4646 (IPR_FIELD_POINTER_MASK & 4647 be32_to_cpu(ioasa->ioasc_specific)) & 0xff; 4648 } else { 4649 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 4650 if (ipr_is_vset_device(res)) 4651 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 4652 else 4653 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 4654 4655 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 4656 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 4657 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 4658 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 4659 sense_buf[6] = failing_lba & 0x000000ff; 4660 } 4661 4662 sense_buf[7] = 6; /* additional length */ 4663 } 4664 } 4665 } 4666 4667 /** 4668 * ipr_get_autosense - Copy autosense data to sense buffer 4669 * @ipr_cmd: ipr command struct 4670 * 4671 * This function copies the autosense buffer to the buffer 4672 * in the scsi_cmd, if there is autosense available. 4673 * 4674 * Return value: 4675 * 1 if autosense was available / 0 if not 4676 **/ 4677 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) 4678 { 4679 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4680 4681 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0) 4682 return 0; 4683 4684 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, 4685 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), 4686 SCSI_SENSE_BUFFERSIZE)); 4687 return 1; 4688 } 4689 4690 /** 4691 * ipr_erp_start - Process an error response for a SCSI op 4692 * @ioa_cfg: ioa config struct 4693 * @ipr_cmd: ipr command struct 4694 * 4695 * This function determines whether or not to initiate ERP 4696 * on the affected device. 4697 * 4698 * Return value: 4699 * nothing 4700 **/ 4701 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 4702 struct ipr_cmnd *ipr_cmd) 4703 { 4704 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4705 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4706 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4707 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK; 4708 4709 if (!res) { 4710 ipr_scsi_eh_done(ipr_cmd); 4711 return; 4712 } 4713 4714 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS) 4715 ipr_gen_sense(ipr_cmd); 4716 4717 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 4718 4719 switch (masked_ioasc) { 4720 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 4721 if (ipr_is_naca_model(res)) 4722 scsi_cmd->result |= (DID_ABORT << 16); 4723 else 4724 scsi_cmd->result |= (DID_IMM_RETRY << 16); 4725 break; 4726 case IPR_IOASC_IR_RESOURCE_HANDLE: 4727 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: 4728 scsi_cmd->result |= (DID_NO_CONNECT << 16); 4729 break; 4730 case IPR_IOASC_HW_SEL_TIMEOUT: 4731 scsi_cmd->result |= (DID_NO_CONNECT << 16); 4732 if (!ipr_is_naca_model(res)) 4733 res->needs_sync_complete = 1; 4734 break; 4735 case IPR_IOASC_SYNC_REQUIRED: 4736 if (!res->in_erp) 4737 res->needs_sync_complete = 1; 4738 scsi_cmd->result |= (DID_IMM_RETRY << 16); 4739 break; 4740 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 4741 case IPR_IOASA_IR_DUAL_IOA_DISABLED: 4742 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 4743 break; 4744 case IPR_IOASC_BUS_WAS_RESET: 4745 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 4746 /* 4747 * Report the bus reset and ask for a retry. The device 4748 * will give CC/UA the next command. 4749 */ 4750 if (!res->resetting_device) 4751 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 4752 scsi_cmd->result |= (DID_ERROR << 16); 4753 if (!ipr_is_naca_model(res)) 4754 res->needs_sync_complete = 1; 4755 break; 4756 case IPR_IOASC_HW_DEV_BUS_STATUS: 4757 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 4758 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 4759 if (!ipr_get_autosense(ipr_cmd)) { 4760 if (!ipr_is_naca_model(res)) { 4761 ipr_erp_cancel_all(ipr_cmd); 4762 return; 4763 } 4764 } 4765 } 4766 if (!ipr_is_naca_model(res)) 4767 res->needs_sync_complete = 1; 4768 break; 4769 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 4770 break; 4771 default: 4772 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 4773 scsi_cmd->result |= (DID_ERROR << 16); 4774 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) 4775 res->needs_sync_complete = 1; 4776 break; 4777 } 4778 4779 scsi_dma_unmap(ipr_cmd->scsi_cmd); 4780 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4781 scsi_cmd->scsi_done(scsi_cmd); 4782 } 4783 4784 /** 4785 * ipr_scsi_done - mid-layer done function 4786 * @ipr_cmd: ipr command struct 4787 * 4788 * This function is invoked by the interrupt handler for 4789 * ops generated by the SCSI mid-layer 4790 * 4791 * Return value: 4792 * none 4793 **/ 4794 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 4795 { 4796 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4797 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4798 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4799 4800 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->ioasa.residual_data_len)); 4801 4802 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 4803 scsi_dma_unmap(ipr_cmd->scsi_cmd); 4804 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4805 scsi_cmd->scsi_done(scsi_cmd); 4806 } else 4807 ipr_erp_start(ioa_cfg, ipr_cmd); 4808 } 4809 4810 /** 4811 * ipr_queuecommand - Queue a mid-layer request 4812 * @scsi_cmd: scsi command struct 4813 * @done: done function 4814 * 4815 * This function queues a request generated by the mid-layer. 4816 * 4817 * Return value: 4818 * 0 on success 4819 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 4820 * SCSI_MLQUEUE_HOST_BUSY if host is busy 4821 **/ 4822 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, 4823 void (*done) (struct scsi_cmnd *)) 4824 { 4825 struct ipr_ioa_cfg *ioa_cfg; 4826 struct ipr_resource_entry *res; 4827 struct ipr_ioarcb *ioarcb; 4828 struct ipr_cmnd *ipr_cmd; 4829 int rc = 0; 4830 4831 scsi_cmd->scsi_done = done; 4832 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 4833 res = scsi_cmd->device->hostdata; 4834 scsi_cmd->result = (DID_OK << 16); 4835 4836 /* 4837 * We are currently blocking all devices due to a host reset 4838 * We have told the host to stop giving us new requests, but 4839 * ERP ops don't count. FIXME 4840 */ 4841 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) 4842 return SCSI_MLQUEUE_HOST_BUSY; 4843 4844 /* 4845 * FIXME - Create scsi_set_host_offline interface 4846 * and the ioa_is_dead check can be removed 4847 */ 4848 if (unlikely(ioa_cfg->ioa_is_dead || !res)) { 4849 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 4850 scsi_cmd->result = (DID_NO_CONNECT << 16); 4851 scsi_cmd->scsi_done(scsi_cmd); 4852 return 0; 4853 } 4854 4855 if (ipr_is_gata(res) && res->sata_port) 4856 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap); 4857 4858 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4859 ioarcb = &ipr_cmd->ioarcb; 4860 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 4861 4862 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 4863 ipr_cmd->scsi_cmd = scsi_cmd; 4864 ioarcb->res_handle = res->cfgte.res_handle; 4865 ipr_cmd->done = ipr_scsi_done; 4866 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 4867 4868 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 4869 if (scsi_cmd->underflow == 0) 4870 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 4871 4872 if (res->needs_sync_complete) { 4873 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 4874 res->needs_sync_complete = 0; 4875 } 4876 4877 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 4878 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 4879 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 4880 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); 4881 } 4882 4883 if (scsi_cmd->cmnd[0] >= 0xC0 && 4884 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) 4885 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4886 4887 if (likely(rc == 0)) 4888 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 4889 4890 if (likely(rc == 0)) { 4891 mb(); 4892 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 4893 ioa_cfg->regs.ioarrin_reg); 4894 } else { 4895 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4896 return SCSI_MLQUEUE_HOST_BUSY; 4897 } 4898 4899 return 0; 4900 } 4901 4902 /** 4903 * ipr_ioctl - IOCTL handler 4904 * @sdev: scsi device struct 4905 * @cmd: IOCTL cmd 4906 * @arg: IOCTL arg 4907 * 4908 * Return value: 4909 * 0 on success / other on failure 4910 **/ 4911 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) 4912 { 4913 struct ipr_resource_entry *res; 4914 4915 res = (struct ipr_resource_entry *)sdev->hostdata; 4916 if (res && ipr_is_gata(res)) 4917 return ata_scsi_ioctl(sdev, cmd, arg); 4918 4919 return -EINVAL; 4920 } 4921 4922 /** 4923 * ipr_info - Get information about the card/driver 4924 * @scsi_host: scsi host struct 4925 * 4926 * Return value: 4927 * pointer to buffer with description string 4928 **/ 4929 static const char * ipr_ioa_info(struct Scsi_Host *host) 4930 { 4931 static char buffer[512]; 4932 struct ipr_ioa_cfg *ioa_cfg; 4933 unsigned long lock_flags = 0; 4934 4935 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 4936 4937 spin_lock_irqsave(host->host_lock, lock_flags); 4938 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 4939 spin_unlock_irqrestore(host->host_lock, lock_flags); 4940 4941 return buffer; 4942 } 4943 4944 static struct scsi_host_template driver_template = { 4945 .module = THIS_MODULE, 4946 .name = "IPR", 4947 .info = ipr_ioa_info, 4948 .ioctl = ipr_ioctl, 4949 .queuecommand = ipr_queuecommand, 4950 .eh_abort_handler = ipr_eh_abort, 4951 .eh_device_reset_handler = ipr_eh_dev_reset, 4952 .eh_host_reset_handler = ipr_eh_host_reset, 4953 .slave_alloc = ipr_slave_alloc, 4954 .slave_configure = ipr_slave_configure, 4955 .slave_destroy = ipr_slave_destroy, 4956 .target_alloc = ipr_target_alloc, 4957 .target_destroy = ipr_target_destroy, 4958 .change_queue_depth = ipr_change_queue_depth, 4959 .change_queue_type = ipr_change_queue_type, 4960 .bios_param = ipr_biosparam, 4961 .can_queue = IPR_MAX_COMMANDS, 4962 .this_id = -1, 4963 .sg_tablesize = IPR_MAX_SGLIST, 4964 .max_sectors = IPR_IOA_MAX_SECTORS, 4965 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 4966 .use_clustering = ENABLE_CLUSTERING, 4967 .shost_attrs = ipr_ioa_attrs, 4968 .sdev_attrs = ipr_dev_attrs, 4969 .proc_name = IPR_NAME 4970 }; 4971 4972 /** 4973 * ipr_ata_phy_reset - libata phy_reset handler 4974 * @ap: ata port to reset 4975 * 4976 **/ 4977 static void ipr_ata_phy_reset(struct ata_port *ap) 4978 { 4979 unsigned long flags; 4980 struct ipr_sata_port *sata_port = ap->private_data; 4981 struct ipr_resource_entry *res = sata_port->res; 4982 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 4983 int rc; 4984 4985 ENTER; 4986 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4987 while(ioa_cfg->in_reset_reload) { 4988 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4989 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4990 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4991 } 4992 4993 if (!ioa_cfg->allow_cmds) 4994 goto out_unlock; 4995 4996 rc = ipr_device_reset(ioa_cfg, res); 4997 4998 if (rc) { 4999 ata_port_disable(ap); 5000 goto out_unlock; 5001 } 5002 5003 switch(res->cfgte.proto) { 5004 case IPR_PROTO_SATA: 5005 case IPR_PROTO_SAS_STP: 5006 ap->link.device[0].class = ATA_DEV_ATA; 5007 break; 5008 case IPR_PROTO_SATA_ATAPI: 5009 case IPR_PROTO_SAS_STP_ATAPI: 5010 ap->link.device[0].class = ATA_DEV_ATAPI; 5011 break; 5012 default: 5013 ap->link.device[0].class = ATA_DEV_UNKNOWN; 5014 ata_port_disable(ap); 5015 break; 5016 }; 5017 5018 out_unlock: 5019 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5020 LEAVE; 5021 } 5022 5023 /** 5024 * ipr_ata_post_internal - Cleanup after an internal command 5025 * @qc: ATA queued command 5026 * 5027 * Return value: 5028 * none 5029 **/ 5030 static void ipr_ata_post_internal(struct ata_queued_cmd *qc) 5031 { 5032 struct ipr_sata_port *sata_port = qc->ap->private_data; 5033 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5034 struct ipr_cmnd *ipr_cmd; 5035 unsigned long flags; 5036 5037 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5038 while(ioa_cfg->in_reset_reload) { 5039 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5040 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5041 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5042 } 5043 5044 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 5045 if (ipr_cmd->qc == qc) { 5046 ipr_device_reset(ioa_cfg, sata_port->res); 5047 break; 5048 } 5049 } 5050 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5051 } 5052 5053 /** 5054 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure 5055 * @regs: destination 5056 * @tf: source ATA taskfile 5057 * 5058 * Return value: 5059 * none 5060 **/ 5061 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs, 5062 struct ata_taskfile *tf) 5063 { 5064 regs->feature = tf->feature; 5065 regs->nsect = tf->nsect; 5066 regs->lbal = tf->lbal; 5067 regs->lbam = tf->lbam; 5068 regs->lbah = tf->lbah; 5069 regs->device = tf->device; 5070 regs->command = tf->command; 5071 regs->hob_feature = tf->hob_feature; 5072 regs->hob_nsect = tf->hob_nsect; 5073 regs->hob_lbal = tf->hob_lbal; 5074 regs->hob_lbam = tf->hob_lbam; 5075 regs->hob_lbah = tf->hob_lbah; 5076 regs->ctl = tf->ctl; 5077 } 5078 5079 /** 5080 * ipr_sata_done - done function for SATA commands 5081 * @ipr_cmd: ipr command struct 5082 * 5083 * This function is invoked by the interrupt handler for 5084 * ops generated by the SCSI mid-layer to SATA devices 5085 * 5086 * Return value: 5087 * none 5088 **/ 5089 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd) 5090 { 5091 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5092 struct ata_queued_cmd *qc = ipr_cmd->qc; 5093 struct ipr_sata_port *sata_port = qc->ap->private_data; 5094 struct ipr_resource_entry *res = sata_port->res; 5095 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5096 5097 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata, 5098 sizeof(struct ipr_ioasa_gata)); 5099 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 5100 5101 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET) 5102 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus, 5103 res->cfgte.res_addr.target); 5104 5105 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 5106 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status); 5107 else 5108 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status); 5109 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5110 ata_qc_complete(qc); 5111 } 5112 5113 /** 5114 * ipr_build_ata_ioadl - Build an ATA scatter/gather list 5115 * @ipr_cmd: ipr command struct 5116 * @qc: ATA queued command 5117 * 5118 **/ 5119 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, 5120 struct ata_queued_cmd *qc) 5121 { 5122 u32 ioadl_flags = 0; 5123 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5124 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5125 struct ipr_ioadl_desc *last_ioadl = NULL; 5126 int len = qc->nbytes; 5127 struct scatterlist *sg; 5128 unsigned int si; 5129 5130 if (len == 0) 5131 return; 5132 5133 if (qc->dma_dir == DMA_TO_DEVICE) { 5134 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5135 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5136 ioarcb->write_data_transfer_length = cpu_to_be32(len); 5137 ioarcb->write_ioadl_len = 5138 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5139 } else if (qc->dma_dir == DMA_FROM_DEVICE) { 5140 ioadl_flags = IPR_IOADL_FLAGS_READ; 5141 ioarcb->read_data_transfer_length = cpu_to_be32(len); 5142 ioarcb->read_ioadl_len = 5143 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5144 } 5145 5146 for_each_sg(qc->sg, sg, qc->n_elem, si) { 5147 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 5148 ioadl->address = cpu_to_be32(sg_dma_address(sg)); 5149 5150 last_ioadl = ioadl; 5151 ioadl++; 5152 } 5153 5154 if (likely(last_ioadl)) 5155 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5156 } 5157 5158 /** 5159 * ipr_qc_issue - Issue a SATA qc to a device 5160 * @qc: queued command 5161 * 5162 * Return value: 5163 * 0 if success 5164 **/ 5165 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) 5166 { 5167 struct ata_port *ap = qc->ap; 5168 struct ipr_sata_port *sata_port = ap->private_data; 5169 struct ipr_resource_entry *res = sata_port->res; 5170 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5171 struct ipr_cmnd *ipr_cmd; 5172 struct ipr_ioarcb *ioarcb; 5173 struct ipr_ioarcb_ata_regs *regs; 5174 5175 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead)) 5176 return AC_ERR_SYSTEM; 5177 5178 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5179 ioarcb = &ipr_cmd->ioarcb; 5180 regs = &ioarcb->add_data.u.regs; 5181 5182 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data)); 5183 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs)); 5184 5185 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 5186 ipr_cmd->qc = qc; 5187 ipr_cmd->done = ipr_sata_done; 5188 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 5189 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU; 5190 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 5191 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 5192 ipr_cmd->dma_use_sg = qc->n_elem; 5193 5194 ipr_build_ata_ioadl(ipr_cmd, qc); 5195 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 5196 ipr_copy_sata_tf(regs, &qc->tf); 5197 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN); 5198 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 5199 5200 switch (qc->tf.protocol) { 5201 case ATA_PROT_NODATA: 5202 case ATA_PROT_PIO: 5203 break; 5204 5205 case ATA_PROT_DMA: 5206 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 5207 break; 5208 5209 case ATAPI_PROT_PIO: 5210 case ATAPI_PROT_NODATA: 5211 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 5212 break; 5213 5214 case ATAPI_PROT_DMA: 5215 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 5216 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 5217 break; 5218 5219 default: 5220 WARN_ON(1); 5221 return AC_ERR_INVALID; 5222 } 5223 5224 mb(); 5225 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr), 5226 ioa_cfg->regs.ioarrin_reg); 5227 return 0; 5228 } 5229 5230 /** 5231 * ipr_qc_fill_rtf - Read result TF 5232 * @qc: ATA queued command 5233 * 5234 * Return value: 5235 * true 5236 **/ 5237 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc) 5238 { 5239 struct ipr_sata_port *sata_port = qc->ap->private_data; 5240 struct ipr_ioasa_gata *g = &sata_port->ioasa; 5241 struct ata_taskfile *tf = &qc->result_tf; 5242 5243 tf->feature = g->error; 5244 tf->nsect = g->nsect; 5245 tf->lbal = g->lbal; 5246 tf->lbam = g->lbam; 5247 tf->lbah = g->lbah; 5248 tf->device = g->device; 5249 tf->command = g->status; 5250 tf->hob_nsect = g->hob_nsect; 5251 tf->hob_lbal = g->hob_lbal; 5252 tf->hob_lbam = g->hob_lbam; 5253 tf->hob_lbah = g->hob_lbah; 5254 tf->ctl = g->alt_status; 5255 5256 return true; 5257 } 5258 5259 static struct ata_port_operations ipr_sata_ops = { 5260 .phy_reset = ipr_ata_phy_reset, 5261 .hardreset = ipr_sata_reset, 5262 .post_internal_cmd = ipr_ata_post_internal, 5263 .qc_prep = ata_noop_qc_prep, 5264 .qc_issue = ipr_qc_issue, 5265 .qc_fill_rtf = ipr_qc_fill_rtf, 5266 .port_start = ata_sas_port_start, 5267 .port_stop = ata_sas_port_stop 5268 }; 5269 5270 static struct ata_port_info sata_port_info = { 5271 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET | 5272 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA, 5273 .pio_mask = 0x10, /* pio4 */ 5274 .mwdma_mask = 0x07, 5275 .udma_mask = 0x7f, /* udma0-6 */ 5276 .port_ops = &ipr_sata_ops 5277 }; 5278 5279 #ifdef CONFIG_PPC_PSERIES 5280 static const u16 ipr_blocked_processors[] = { 5281 PV_NORTHSTAR, 5282 PV_PULSAR, 5283 PV_POWER4, 5284 PV_ICESTAR, 5285 PV_SSTAR, 5286 PV_POWER4p, 5287 PV_630, 5288 PV_630p 5289 }; 5290 5291 /** 5292 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 5293 * @ioa_cfg: ioa cfg struct 5294 * 5295 * Adapters that use Gemstone revision < 3.1 do not work reliably on 5296 * certain pSeries hardware. This function determines if the given 5297 * adapter is in one of these confgurations or not. 5298 * 5299 * Return value: 5300 * 1 if adapter is not supported / 0 if adapter is supported 5301 **/ 5302 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 5303 { 5304 int i; 5305 5306 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) { 5307 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ 5308 if (__is_processor(ipr_blocked_processors[i])) 5309 return 1; 5310 } 5311 } 5312 return 0; 5313 } 5314 #else 5315 #define ipr_invalid_adapter(ioa_cfg) 0 5316 #endif 5317 5318 /** 5319 * ipr_ioa_bringdown_done - IOA bring down completion. 5320 * @ipr_cmd: ipr command struct 5321 * 5322 * This function processes the completion of an adapter bring down. 5323 * It wakes any reset sleepers. 5324 * 5325 * Return value: 5326 * IPR_RC_JOB_RETURN 5327 **/ 5328 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 5329 { 5330 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5331 5332 ENTER; 5333 ioa_cfg->in_reset_reload = 0; 5334 ioa_cfg->reset_retries = 0; 5335 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5336 wake_up_all(&ioa_cfg->reset_wait_q); 5337 5338 spin_unlock_irq(ioa_cfg->host->host_lock); 5339 scsi_unblock_requests(ioa_cfg->host); 5340 spin_lock_irq(ioa_cfg->host->host_lock); 5341 LEAVE; 5342 5343 return IPR_RC_JOB_RETURN; 5344 } 5345 5346 /** 5347 * ipr_ioa_reset_done - IOA reset completion. 5348 * @ipr_cmd: ipr command struct 5349 * 5350 * This function processes the completion of an adapter reset. 5351 * It schedules any necessary mid-layer add/removes and 5352 * wakes any reset sleepers. 5353 * 5354 * Return value: 5355 * IPR_RC_JOB_RETURN 5356 **/ 5357 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 5358 { 5359 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5360 struct ipr_resource_entry *res; 5361 struct ipr_hostrcb *hostrcb, *temp; 5362 int i = 0; 5363 5364 ENTER; 5365 ioa_cfg->in_reset_reload = 0; 5366 ioa_cfg->allow_cmds = 1; 5367 ioa_cfg->reset_cmd = NULL; 5368 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 5369 5370 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 5371 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { 5372 ipr_trace; 5373 break; 5374 } 5375 } 5376 schedule_work(&ioa_cfg->work_q); 5377 5378 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { 5379 list_del(&hostrcb->queue); 5380 if (i++ < IPR_NUM_LOG_HCAMS) 5381 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 5382 else 5383 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 5384 } 5385 5386 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS); 5387 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 5388 5389 ioa_cfg->reset_retries = 0; 5390 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5391 wake_up_all(&ioa_cfg->reset_wait_q); 5392 5393 spin_unlock_irq(ioa_cfg->host->host_lock); 5394 scsi_unblock_requests(ioa_cfg->host); 5395 spin_lock_irq(ioa_cfg->host->host_lock); 5396 5397 if (!ioa_cfg->allow_cmds) 5398 scsi_block_requests(ioa_cfg->host); 5399 5400 LEAVE; 5401 return IPR_RC_JOB_RETURN; 5402 } 5403 5404 /** 5405 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 5406 * @supported_dev: supported device struct 5407 * @vpids: vendor product id struct 5408 * 5409 * Return value: 5410 * none 5411 **/ 5412 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 5413 struct ipr_std_inq_vpids *vpids) 5414 { 5415 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 5416 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 5417 supported_dev->num_records = 1; 5418 supported_dev->data_length = 5419 cpu_to_be16(sizeof(struct ipr_supported_device)); 5420 supported_dev->reserved = 0; 5421 } 5422 5423 /** 5424 * ipr_set_supported_devs - Send Set Supported Devices for a device 5425 * @ipr_cmd: ipr command struct 5426 * 5427 * This function send a Set Supported Devices to the adapter 5428 * 5429 * Return value: 5430 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5431 **/ 5432 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 5433 { 5434 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5435 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 5436 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5437 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5438 struct ipr_resource_entry *res = ipr_cmd->u.res; 5439 5440 ipr_cmd->job_step = ipr_ioa_reset_done; 5441 5442 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 5443 if (!ipr_is_scsi_disk(res)) 5444 continue; 5445 5446 ipr_cmd->u.res = res; 5447 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids); 5448 5449 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5450 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5451 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5452 5453 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 5454 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 5455 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 5456 5457 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | 5458 sizeof(struct ipr_supported_device)); 5459 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma + 5460 offsetof(struct ipr_misc_cbs, supp_dev)); 5461 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5462 ioarcb->write_data_transfer_length = 5463 cpu_to_be32(sizeof(struct ipr_supported_device)); 5464 5465 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 5466 IPR_SET_SUP_DEVICE_TIMEOUT); 5467 5468 ipr_cmd->job_step = ipr_set_supported_devs; 5469 return IPR_RC_JOB_RETURN; 5470 } 5471 5472 return IPR_RC_JOB_CONTINUE; 5473 } 5474 5475 /** 5476 * ipr_setup_write_cache - Disable write cache if needed 5477 * @ipr_cmd: ipr command struct 5478 * 5479 * This function sets up adapters write cache to desired setting 5480 * 5481 * Return value: 5482 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5483 **/ 5484 static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd) 5485 { 5486 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5487 5488 ipr_cmd->job_step = ipr_set_supported_devs; 5489 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 5490 struct ipr_resource_entry, queue); 5491 5492 if (ioa_cfg->cache_state != CACHE_DISABLED) 5493 return IPR_RC_JOB_CONTINUE; 5494 5495 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5496 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5497 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 5498 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 5499 5500 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5501 5502 return IPR_RC_JOB_RETURN; 5503 } 5504 5505 /** 5506 * ipr_get_mode_page - Locate specified mode page 5507 * @mode_pages: mode page buffer 5508 * @page_code: page code to find 5509 * @len: minimum required length for mode page 5510 * 5511 * Return value: 5512 * pointer to mode page / NULL on failure 5513 **/ 5514 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 5515 u32 page_code, u32 len) 5516 { 5517 struct ipr_mode_page_hdr *mode_hdr; 5518 u32 page_length; 5519 u32 length; 5520 5521 if (!mode_pages || (mode_pages->hdr.length == 0)) 5522 return NULL; 5523 5524 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 5525 mode_hdr = (struct ipr_mode_page_hdr *) 5526 (mode_pages->data + mode_pages->hdr.block_desc_len); 5527 5528 while (length) { 5529 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 5530 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 5531 return mode_hdr; 5532 break; 5533 } else { 5534 page_length = (sizeof(struct ipr_mode_page_hdr) + 5535 mode_hdr->page_length); 5536 length -= page_length; 5537 mode_hdr = (struct ipr_mode_page_hdr *) 5538 ((unsigned long)mode_hdr + page_length); 5539 } 5540 } 5541 return NULL; 5542 } 5543 5544 /** 5545 * ipr_check_term_power - Check for term power errors 5546 * @ioa_cfg: ioa config struct 5547 * @mode_pages: IOAFP mode pages buffer 5548 * 5549 * Check the IOAFP's mode page 28 for term power errors 5550 * 5551 * Return value: 5552 * nothing 5553 **/ 5554 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 5555 struct ipr_mode_pages *mode_pages) 5556 { 5557 int i; 5558 int entry_length; 5559 struct ipr_dev_bus_entry *bus; 5560 struct ipr_mode_page28 *mode_page; 5561 5562 mode_page = ipr_get_mode_page(mode_pages, 0x28, 5563 sizeof(struct ipr_mode_page28)); 5564 5565 entry_length = mode_page->entry_length; 5566 5567 bus = mode_page->bus; 5568 5569 for (i = 0; i < mode_page->num_entries; i++) { 5570 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 5571 dev_err(&ioa_cfg->pdev->dev, 5572 "Term power is absent on scsi bus %d\n", 5573 bus->res_addr.bus); 5574 } 5575 5576 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 5577 } 5578 } 5579 5580 /** 5581 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 5582 * @ioa_cfg: ioa config struct 5583 * 5584 * Looks through the config table checking for SES devices. If 5585 * the SES device is in the SES table indicating a maximum SCSI 5586 * bus speed, the speed is limited for the bus. 5587 * 5588 * Return value: 5589 * none 5590 **/ 5591 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 5592 { 5593 u32 max_xfer_rate; 5594 int i; 5595 5596 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 5597 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 5598 ioa_cfg->bus_attr[i].bus_width); 5599 5600 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 5601 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 5602 } 5603 } 5604 5605 /** 5606 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 5607 * @ioa_cfg: ioa config struct 5608 * @mode_pages: mode page 28 buffer 5609 * 5610 * Updates mode page 28 based on driver configuration 5611 * 5612 * Return value: 5613 * none 5614 **/ 5615 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 5616 struct ipr_mode_pages *mode_pages) 5617 { 5618 int i, entry_length; 5619 struct ipr_dev_bus_entry *bus; 5620 struct ipr_bus_attributes *bus_attr; 5621 struct ipr_mode_page28 *mode_page; 5622 5623 mode_page = ipr_get_mode_page(mode_pages, 0x28, 5624 sizeof(struct ipr_mode_page28)); 5625 5626 entry_length = mode_page->entry_length; 5627 5628 /* Loop for each device bus entry */ 5629 for (i = 0, bus = mode_page->bus; 5630 i < mode_page->num_entries; 5631 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 5632 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 5633 dev_err(&ioa_cfg->pdev->dev, 5634 "Invalid resource address reported: 0x%08X\n", 5635 IPR_GET_PHYS_LOC(bus->res_addr)); 5636 continue; 5637 } 5638 5639 bus_attr = &ioa_cfg->bus_attr[i]; 5640 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 5641 bus->bus_width = bus_attr->bus_width; 5642 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 5643 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 5644 if (bus_attr->qas_enabled) 5645 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 5646 else 5647 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 5648 } 5649 } 5650 5651 /** 5652 * ipr_build_mode_select - Build a mode select command 5653 * @ipr_cmd: ipr command struct 5654 * @res_handle: resource handle to send command to 5655 * @parm: Byte 2 of Mode Sense command 5656 * @dma_addr: DMA buffer address 5657 * @xfer_len: data transfer length 5658 * 5659 * Return value: 5660 * none 5661 **/ 5662 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 5663 __be32 res_handle, u8 parm, u32 dma_addr, 5664 u8 xfer_len) 5665 { 5666 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5667 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5668 5669 ioarcb->res_handle = res_handle; 5670 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5671 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5672 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 5673 ioarcb->cmd_pkt.cdb[1] = parm; 5674 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5675 5676 ioadl->flags_and_data_len = 5677 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len); 5678 ioadl->address = cpu_to_be32(dma_addr); 5679 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5680 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len); 5681 } 5682 5683 /** 5684 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 5685 * @ipr_cmd: ipr command struct 5686 * 5687 * This function sets up the SCSI bus attributes and sends 5688 * a Mode Select for Page 28 to activate them. 5689 * 5690 * Return value: 5691 * IPR_RC_JOB_RETURN 5692 **/ 5693 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 5694 { 5695 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5696 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 5697 int length; 5698 5699 ENTER; 5700 ipr_scsi_bus_speed_limit(ioa_cfg); 5701 ipr_check_term_power(ioa_cfg, mode_pages); 5702 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 5703 length = mode_pages->hdr.length + 1; 5704 mode_pages->hdr.length = 0; 5705 5706 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 5707 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 5708 length); 5709 5710 ipr_cmd->job_step = ipr_setup_write_cache; 5711 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5712 5713 LEAVE; 5714 return IPR_RC_JOB_RETURN; 5715 } 5716 5717 /** 5718 * ipr_build_mode_sense - Builds a mode sense command 5719 * @ipr_cmd: ipr command struct 5720 * @res: resource entry struct 5721 * @parm: Byte 2 of mode sense command 5722 * @dma_addr: DMA address of mode sense buffer 5723 * @xfer_len: Size of DMA buffer 5724 * 5725 * Return value: 5726 * none 5727 **/ 5728 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 5729 __be32 res_handle, 5730 u8 parm, u32 dma_addr, u8 xfer_len) 5731 { 5732 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5733 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5734 5735 ioarcb->res_handle = res_handle; 5736 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 5737 ioarcb->cmd_pkt.cdb[2] = parm; 5738 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5739 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5740 5741 ioadl->flags_and_data_len = 5742 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 5743 ioadl->address = cpu_to_be32(dma_addr); 5744 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5745 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 5746 } 5747 5748 /** 5749 * ipr_reset_cmd_failed - Handle failure of IOA reset command 5750 * @ipr_cmd: ipr command struct 5751 * 5752 * This function handles the failure of an IOA bringup command. 5753 * 5754 * Return value: 5755 * IPR_RC_JOB_RETURN 5756 **/ 5757 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 5758 { 5759 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5760 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5761 5762 dev_err(&ioa_cfg->pdev->dev, 5763 "0x%02X failed with IOASC: 0x%08X\n", 5764 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 5765 5766 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5767 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5768 return IPR_RC_JOB_RETURN; 5769 } 5770 5771 /** 5772 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 5773 * @ipr_cmd: ipr command struct 5774 * 5775 * This function handles the failure of a Mode Sense to the IOAFP. 5776 * Some adapters do not handle all mode pages. 5777 * 5778 * Return value: 5779 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5780 **/ 5781 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 5782 { 5783 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5784 5785 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 5786 ipr_cmd->job_step = ipr_setup_write_cache; 5787 return IPR_RC_JOB_CONTINUE; 5788 } 5789 5790 return ipr_reset_cmd_failed(ipr_cmd); 5791 } 5792 5793 /** 5794 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 5795 * @ipr_cmd: ipr command struct 5796 * 5797 * This function send a Page 28 mode sense to the IOA to 5798 * retrieve SCSI bus attributes. 5799 * 5800 * Return value: 5801 * IPR_RC_JOB_RETURN 5802 **/ 5803 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 5804 { 5805 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5806 5807 ENTER; 5808 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 5809 0x28, ioa_cfg->vpd_cbs_dma + 5810 offsetof(struct ipr_misc_cbs, mode_pages), 5811 sizeof(struct ipr_mode_pages)); 5812 5813 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 5814 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 5815 5816 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5817 5818 LEAVE; 5819 return IPR_RC_JOB_RETURN; 5820 } 5821 5822 /** 5823 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA 5824 * @ipr_cmd: ipr command struct 5825 * 5826 * This function enables dual IOA RAID support if possible. 5827 * 5828 * Return value: 5829 * IPR_RC_JOB_RETURN 5830 **/ 5831 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd) 5832 { 5833 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5834 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 5835 struct ipr_mode_page24 *mode_page; 5836 int length; 5837 5838 ENTER; 5839 mode_page = ipr_get_mode_page(mode_pages, 0x24, 5840 sizeof(struct ipr_mode_page24)); 5841 5842 if (mode_page) 5843 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF; 5844 5845 length = mode_pages->hdr.length + 1; 5846 mode_pages->hdr.length = 0; 5847 5848 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 5849 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 5850 length); 5851 5852 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 5853 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5854 5855 LEAVE; 5856 return IPR_RC_JOB_RETURN; 5857 } 5858 5859 /** 5860 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense 5861 * @ipr_cmd: ipr command struct 5862 * 5863 * This function handles the failure of a Mode Sense to the IOAFP. 5864 * Some adapters do not handle all mode pages. 5865 * 5866 * Return value: 5867 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5868 **/ 5869 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd) 5870 { 5871 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5872 5873 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 5874 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 5875 return IPR_RC_JOB_CONTINUE; 5876 } 5877 5878 return ipr_reset_cmd_failed(ipr_cmd); 5879 } 5880 5881 /** 5882 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA 5883 * @ipr_cmd: ipr command struct 5884 * 5885 * This function send a mode sense to the IOA to retrieve 5886 * the IOA Advanced Function Control mode page. 5887 * 5888 * Return value: 5889 * IPR_RC_JOB_RETURN 5890 **/ 5891 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd) 5892 { 5893 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5894 5895 ENTER; 5896 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 5897 0x24, ioa_cfg->vpd_cbs_dma + 5898 offsetof(struct ipr_misc_cbs, mode_pages), 5899 sizeof(struct ipr_mode_pages)); 5900 5901 ipr_cmd->job_step = ipr_ioafp_mode_select_page24; 5902 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed; 5903 5904 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5905 5906 LEAVE; 5907 return IPR_RC_JOB_RETURN; 5908 } 5909 5910 /** 5911 * ipr_init_res_table - Initialize the resource table 5912 * @ipr_cmd: ipr command struct 5913 * 5914 * This function looks through the existing resource table, comparing 5915 * it with the config table. This function will take care of old/new 5916 * devices and schedule adding/removing them from the mid-layer 5917 * as appropriate. 5918 * 5919 * Return value: 5920 * IPR_RC_JOB_CONTINUE 5921 **/ 5922 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 5923 { 5924 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5925 struct ipr_resource_entry *res, *temp; 5926 struct ipr_config_table_entry *cfgte; 5927 int found, i; 5928 LIST_HEAD(old_res); 5929 5930 ENTER; 5931 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ) 5932 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 5933 5934 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 5935 list_move_tail(&res->queue, &old_res); 5936 5937 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) { 5938 cfgte = &ioa_cfg->cfg_table->dev[i]; 5939 found = 0; 5940 5941 list_for_each_entry_safe(res, temp, &old_res, queue) { 5942 if (!memcmp(&res->cfgte.res_addr, 5943 &cfgte->res_addr, sizeof(cfgte->res_addr))) { 5944 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5945 found = 1; 5946 break; 5947 } 5948 } 5949 5950 if (!found) { 5951 if (list_empty(&ioa_cfg->free_res_q)) { 5952 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 5953 break; 5954 } 5955 5956 found = 1; 5957 res = list_entry(ioa_cfg->free_res_q.next, 5958 struct ipr_resource_entry, queue); 5959 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5960 ipr_init_res_entry(res); 5961 res->add_to_ml = 1; 5962 } 5963 5964 if (found) 5965 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 5966 } 5967 5968 list_for_each_entry_safe(res, temp, &old_res, queue) { 5969 if (res->sdev) { 5970 res->del_from_ml = 1; 5971 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE; 5972 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5973 } else { 5974 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 5975 } 5976 } 5977 5978 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 5979 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24; 5980 else 5981 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 5982 5983 LEAVE; 5984 return IPR_RC_JOB_CONTINUE; 5985 } 5986 5987 /** 5988 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 5989 * @ipr_cmd: ipr command struct 5990 * 5991 * This function sends a Query IOA Configuration command 5992 * to the adapter to retrieve the IOA configuration table. 5993 * 5994 * Return value: 5995 * IPR_RC_JOB_RETURN 5996 **/ 5997 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 5998 { 5999 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6000 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6001 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 6002 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 6003 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 6004 6005 ENTER; 6006 if (cap->cap & IPR_CAP_DUAL_IOA_RAID) 6007 ioa_cfg->dual_raid = 1; 6008 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 6009 ucode_vpd->major_release, ucode_vpd->card_type, 6010 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 6011 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6012 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6013 6014 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 6015 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff; 6016 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff; 6017 6018 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 6019 ioarcb->read_data_transfer_length = 6020 cpu_to_be32(sizeof(struct ipr_config_table)); 6021 6022 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma); 6023 ioadl->flags_and_data_len = 6024 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table)); 6025 6026 ipr_cmd->job_step = ipr_init_res_table; 6027 6028 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6029 6030 LEAVE; 6031 return IPR_RC_JOB_RETURN; 6032 } 6033 6034 /** 6035 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 6036 * @ipr_cmd: ipr command struct 6037 * 6038 * This utility function sends an inquiry to the adapter. 6039 * 6040 * Return value: 6041 * none 6042 **/ 6043 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 6044 u32 dma_addr, u8 xfer_len) 6045 { 6046 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6047 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 6048 6049 ENTER; 6050 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6051 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6052 6053 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 6054 ioarcb->cmd_pkt.cdb[1] = flags; 6055 ioarcb->cmd_pkt.cdb[2] = page; 6056 ioarcb->cmd_pkt.cdb[4] = xfer_len; 6057 6058 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 6059 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 6060 6061 ioadl->address = cpu_to_be32(dma_addr); 6062 ioadl->flags_and_data_len = 6063 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 6064 6065 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6066 LEAVE; 6067 } 6068 6069 /** 6070 * ipr_inquiry_page_supported - Is the given inquiry page supported 6071 * @page0: inquiry page 0 buffer 6072 * @page: page code. 6073 * 6074 * This function determines if the specified inquiry page is supported. 6075 * 6076 * Return value: 6077 * 1 if page is supported / 0 if not 6078 **/ 6079 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 6080 { 6081 int i; 6082 6083 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 6084 if (page0->page[i] == page) 6085 return 1; 6086 6087 return 0; 6088 } 6089 6090 /** 6091 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter. 6092 * @ipr_cmd: ipr command struct 6093 * 6094 * This function sends a Page 0xD0 inquiry to the adapter 6095 * to retrieve adapter capabilities. 6096 * 6097 * Return value: 6098 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6099 **/ 6100 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd) 6101 { 6102 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6103 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 6104 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 6105 6106 ENTER; 6107 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 6108 memset(cap, 0, sizeof(*cap)); 6109 6110 if (ipr_inquiry_page_supported(page0, 0xD0)) { 6111 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0, 6112 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap), 6113 sizeof(struct ipr_inquiry_cap)); 6114 return IPR_RC_JOB_RETURN; 6115 } 6116 6117 LEAVE; 6118 return IPR_RC_JOB_CONTINUE; 6119 } 6120 6121 /** 6122 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 6123 * @ipr_cmd: ipr command struct 6124 * 6125 * This function sends a Page 3 inquiry to the adapter 6126 * to retrieve software VPD information. 6127 * 6128 * Return value: 6129 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6130 **/ 6131 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 6132 { 6133 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6134 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 6135 6136 ENTER; 6137 6138 if (!ipr_inquiry_page_supported(page0, 1)) 6139 ioa_cfg->cache_state = CACHE_NONE; 6140 6141 ipr_cmd->job_step = ipr_ioafp_cap_inquiry; 6142 6143 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 6144 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 6145 sizeof(struct ipr_inquiry_page3)); 6146 6147 LEAVE; 6148 return IPR_RC_JOB_RETURN; 6149 } 6150 6151 /** 6152 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 6153 * @ipr_cmd: ipr command struct 6154 * 6155 * This function sends a Page 0 inquiry to the adapter 6156 * to retrieve supported inquiry pages. 6157 * 6158 * Return value: 6159 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6160 **/ 6161 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 6162 { 6163 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6164 char type[5]; 6165 6166 ENTER; 6167 6168 /* Grab the type out of the VPD and store it away */ 6169 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 6170 type[4] = '\0'; 6171 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 6172 6173 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 6174 6175 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 6176 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 6177 sizeof(struct ipr_inquiry_page0)); 6178 6179 LEAVE; 6180 return IPR_RC_JOB_RETURN; 6181 } 6182 6183 /** 6184 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 6185 * @ipr_cmd: ipr command struct 6186 * 6187 * This function sends a standard inquiry to the adapter. 6188 * 6189 * Return value: 6190 * IPR_RC_JOB_RETURN 6191 **/ 6192 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 6193 { 6194 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6195 6196 ENTER; 6197 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 6198 6199 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 6200 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 6201 sizeof(struct ipr_ioa_vpd)); 6202 6203 LEAVE; 6204 return IPR_RC_JOB_RETURN; 6205 } 6206 6207 /** 6208 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ. 6209 * @ipr_cmd: ipr command struct 6210 * 6211 * This function send an Identify Host Request Response Queue 6212 * command to establish the HRRQ with the adapter. 6213 * 6214 * Return value: 6215 * IPR_RC_JOB_RETURN 6216 **/ 6217 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd) 6218 { 6219 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6220 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6221 6222 ENTER; 6223 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 6224 6225 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 6226 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6227 6228 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6229 ioarcb->cmd_pkt.cdb[2] = 6230 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff; 6231 ioarcb->cmd_pkt.cdb[3] = 6232 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff; 6233 ioarcb->cmd_pkt.cdb[4] = 6234 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff; 6235 ioarcb->cmd_pkt.cdb[5] = 6236 ((u32) ioa_cfg->host_rrq_dma) & 0xff; 6237 ioarcb->cmd_pkt.cdb[7] = 6238 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; 6239 ioarcb->cmd_pkt.cdb[8] = 6240 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; 6241 6242 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 6243 6244 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6245 6246 LEAVE; 6247 return IPR_RC_JOB_RETURN; 6248 } 6249 6250 /** 6251 * ipr_reset_timer_done - Adapter reset timer function 6252 * @ipr_cmd: ipr command struct 6253 * 6254 * Description: This function is used in adapter reset processing 6255 * for timing events. If the reset_cmd pointer in the IOA 6256 * config struct is not this adapter's we are doing nested 6257 * resets and fail_all_ops will take care of freeing the 6258 * command block. 6259 * 6260 * Return value: 6261 * none 6262 **/ 6263 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 6264 { 6265 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6266 unsigned long lock_flags = 0; 6267 6268 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6269 6270 if (ioa_cfg->reset_cmd == ipr_cmd) { 6271 list_del(&ipr_cmd->queue); 6272 ipr_cmd->done(ipr_cmd); 6273 } 6274 6275 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6276 } 6277 6278 /** 6279 * ipr_reset_start_timer - Start a timer for adapter reset job 6280 * @ipr_cmd: ipr command struct 6281 * @timeout: timeout value 6282 * 6283 * Description: This function is used in adapter reset processing 6284 * for timing events. If the reset_cmd pointer in the IOA 6285 * config struct is not this adapter's we are doing nested 6286 * resets and fail_all_ops will take care of freeing the 6287 * command block. 6288 * 6289 * Return value: 6290 * none 6291 **/ 6292 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 6293 unsigned long timeout) 6294 { 6295 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 6296 ipr_cmd->done = ipr_reset_ioa_job; 6297 6298 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 6299 ipr_cmd->timer.expires = jiffies + timeout; 6300 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 6301 add_timer(&ipr_cmd->timer); 6302 } 6303 6304 /** 6305 * ipr_init_ioa_mem - Initialize ioa_cfg control block 6306 * @ioa_cfg: ioa cfg struct 6307 * 6308 * Return value: 6309 * nothing 6310 **/ 6311 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 6312 { 6313 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); 6314 6315 /* Initialize Host RRQ pointers */ 6316 ioa_cfg->hrrq_start = ioa_cfg->host_rrq; 6317 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; 6318 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 6319 ioa_cfg->toggle_bit = 1; 6320 6321 /* Zero out config table */ 6322 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table)); 6323 } 6324 6325 /** 6326 * ipr_reset_enable_ioa - Enable the IOA following a reset. 6327 * @ipr_cmd: ipr command struct 6328 * 6329 * This function reinitializes some control blocks and 6330 * enables destructive diagnostics on the adapter. 6331 * 6332 * Return value: 6333 * IPR_RC_JOB_RETURN 6334 **/ 6335 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 6336 { 6337 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6338 volatile u32 int_reg; 6339 6340 ENTER; 6341 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq; 6342 ipr_init_ioa_mem(ioa_cfg); 6343 6344 ioa_cfg->allow_interrupts = 1; 6345 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 6346 6347 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 6348 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 6349 ioa_cfg->regs.clr_interrupt_mask_reg); 6350 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 6351 return IPR_RC_JOB_CONTINUE; 6352 } 6353 6354 /* Enable destructive diagnostics on IOA */ 6355 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg); 6356 6357 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg); 6358 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 6359 6360 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 6361 6362 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 6363 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ); 6364 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 6365 ipr_cmd->done = ipr_reset_ioa_job; 6366 add_timer(&ipr_cmd->timer); 6367 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 6368 6369 LEAVE; 6370 return IPR_RC_JOB_RETURN; 6371 } 6372 6373 /** 6374 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 6375 * @ipr_cmd: ipr command struct 6376 * 6377 * This function is invoked when an adapter dump has run out 6378 * of processing time. 6379 * 6380 * Return value: 6381 * IPR_RC_JOB_CONTINUE 6382 **/ 6383 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 6384 { 6385 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6386 6387 if (ioa_cfg->sdt_state == GET_DUMP) 6388 ioa_cfg->sdt_state = ABORT_DUMP; 6389 6390 ipr_cmd->job_step = ipr_reset_alert; 6391 6392 return IPR_RC_JOB_CONTINUE; 6393 } 6394 6395 /** 6396 * ipr_unit_check_no_data - Log a unit check/no data error log 6397 * @ioa_cfg: ioa config struct 6398 * 6399 * Logs an error indicating the adapter unit checked, but for some 6400 * reason, we were unable to fetch the unit check buffer. 6401 * 6402 * Return value: 6403 * nothing 6404 **/ 6405 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 6406 { 6407 ioa_cfg->errors_logged++; 6408 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 6409 } 6410 6411 /** 6412 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 6413 * @ioa_cfg: ioa config struct 6414 * 6415 * Fetches the unit check buffer from the adapter by clocking the data 6416 * through the mailbox register. 6417 * 6418 * Return value: 6419 * nothing 6420 **/ 6421 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 6422 { 6423 unsigned long mailbox; 6424 struct ipr_hostrcb *hostrcb; 6425 struct ipr_uc_sdt sdt; 6426 int rc, length; 6427 u32 ioasc; 6428 6429 mailbox = readl(ioa_cfg->ioa_mailbox); 6430 6431 if (!ipr_sdt_is_fmt2(mailbox)) { 6432 ipr_unit_check_no_data(ioa_cfg); 6433 return; 6434 } 6435 6436 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 6437 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 6438 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 6439 6440 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) || 6441 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) { 6442 ipr_unit_check_no_data(ioa_cfg); 6443 return; 6444 } 6445 6446 /* Find length of the first sdt entry (UC buffer) */ 6447 length = (be32_to_cpu(sdt.entry[0].end_offset) - 6448 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK; 6449 6450 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 6451 struct ipr_hostrcb, queue); 6452 list_del(&hostrcb->queue); 6453 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 6454 6455 rc = ipr_get_ldump_data_section(ioa_cfg, 6456 be32_to_cpu(sdt.entry[0].bar_str_offset), 6457 (__be32 *)&hostrcb->hcam, 6458 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 6459 6460 if (!rc) { 6461 ipr_handle_log_data(ioa_cfg, hostrcb); 6462 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc); 6463 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED && 6464 ioa_cfg->sdt_state == GET_DUMP) 6465 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 6466 } else 6467 ipr_unit_check_no_data(ioa_cfg); 6468 6469 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 6470 } 6471 6472 /** 6473 * ipr_reset_restore_cfg_space - Restore PCI config space. 6474 * @ipr_cmd: ipr command struct 6475 * 6476 * Description: This function restores the saved PCI config space of 6477 * the adapter, fails all outstanding ops back to the callers, and 6478 * fetches the dump/unit check if applicable to this reset. 6479 * 6480 * Return value: 6481 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6482 **/ 6483 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 6484 { 6485 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6486 int rc; 6487 6488 ENTER; 6489 rc = pci_restore_state(ioa_cfg->pdev); 6490 6491 if (rc != PCIBIOS_SUCCESSFUL) { 6492 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6493 return IPR_RC_JOB_CONTINUE; 6494 } 6495 6496 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 6497 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6498 return IPR_RC_JOB_CONTINUE; 6499 } 6500 6501 ipr_fail_all_ops(ioa_cfg); 6502 6503 if (ioa_cfg->ioa_unit_checked) { 6504 ioa_cfg->ioa_unit_checked = 0; 6505 ipr_get_unit_check_buffer(ioa_cfg); 6506 ipr_cmd->job_step = ipr_reset_alert; 6507 ipr_reset_start_timer(ipr_cmd, 0); 6508 return IPR_RC_JOB_RETURN; 6509 } 6510 6511 if (ioa_cfg->in_ioa_bringdown) { 6512 ipr_cmd->job_step = ipr_ioa_bringdown_done; 6513 } else { 6514 ipr_cmd->job_step = ipr_reset_enable_ioa; 6515 6516 if (GET_DUMP == ioa_cfg->sdt_state) { 6517 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); 6518 ipr_cmd->job_step = ipr_reset_wait_for_dump; 6519 schedule_work(&ioa_cfg->work_q); 6520 return IPR_RC_JOB_RETURN; 6521 } 6522 } 6523 6524 ENTER; 6525 return IPR_RC_JOB_CONTINUE; 6526 } 6527 6528 /** 6529 * ipr_reset_bist_done - BIST has completed on the adapter. 6530 * @ipr_cmd: ipr command struct 6531 * 6532 * Description: Unblock config space and resume the reset process. 6533 * 6534 * Return value: 6535 * IPR_RC_JOB_CONTINUE 6536 **/ 6537 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd) 6538 { 6539 ENTER; 6540 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 6541 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 6542 LEAVE; 6543 return IPR_RC_JOB_CONTINUE; 6544 } 6545 6546 /** 6547 * ipr_reset_start_bist - Run BIST on the adapter. 6548 * @ipr_cmd: ipr command struct 6549 * 6550 * Description: This function runs BIST on the adapter, then delays 2 seconds. 6551 * 6552 * Return value: 6553 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6554 **/ 6555 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 6556 { 6557 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6558 int rc; 6559 6560 ENTER; 6561 pci_block_user_cfg_access(ioa_cfg->pdev); 6562 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 6563 6564 if (rc != PCIBIOS_SUCCESSFUL) { 6565 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 6566 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6567 rc = IPR_RC_JOB_CONTINUE; 6568 } else { 6569 ipr_cmd->job_step = ipr_reset_bist_done; 6570 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 6571 rc = IPR_RC_JOB_RETURN; 6572 } 6573 6574 LEAVE; 6575 return rc; 6576 } 6577 6578 /** 6579 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter 6580 * @ipr_cmd: ipr command struct 6581 * 6582 * Description: This clears PCI reset to the adapter and delays two seconds. 6583 * 6584 * Return value: 6585 * IPR_RC_JOB_RETURN 6586 **/ 6587 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd) 6588 { 6589 ENTER; 6590 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset); 6591 ipr_cmd->job_step = ipr_reset_bist_done; 6592 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 6593 LEAVE; 6594 return IPR_RC_JOB_RETURN; 6595 } 6596 6597 /** 6598 * ipr_reset_slot_reset - Reset the PCI slot of the adapter. 6599 * @ipr_cmd: ipr command struct 6600 * 6601 * Description: This asserts PCI reset to the adapter. 6602 * 6603 * Return value: 6604 * IPR_RC_JOB_RETURN 6605 **/ 6606 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd) 6607 { 6608 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6609 struct pci_dev *pdev = ioa_cfg->pdev; 6610 6611 ENTER; 6612 pci_block_user_cfg_access(pdev); 6613 pci_set_pcie_reset_state(pdev, pcie_warm_reset); 6614 ipr_cmd->job_step = ipr_reset_slot_reset_done; 6615 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT); 6616 LEAVE; 6617 return IPR_RC_JOB_RETURN; 6618 } 6619 6620 /** 6621 * ipr_reset_allowed - Query whether or not IOA can be reset 6622 * @ioa_cfg: ioa config struct 6623 * 6624 * Return value: 6625 * 0 if reset not allowed / non-zero if reset is allowed 6626 **/ 6627 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 6628 { 6629 volatile u32 temp_reg; 6630 6631 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 6632 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 6633 } 6634 6635 /** 6636 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 6637 * @ipr_cmd: ipr command struct 6638 * 6639 * Description: This function waits for adapter permission to run BIST, 6640 * then runs BIST. If the adapter does not give permission after a 6641 * reasonable time, we will reset the adapter anyway. The impact of 6642 * resetting the adapter without warning the adapter is the risk of 6643 * losing the persistent error log on the adapter. If the adapter is 6644 * reset while it is writing to the flash on the adapter, the flash 6645 * segment will have bad ECC and be zeroed. 6646 * 6647 * Return value: 6648 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6649 **/ 6650 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 6651 { 6652 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6653 int rc = IPR_RC_JOB_RETURN; 6654 6655 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 6656 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 6657 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 6658 } else { 6659 ipr_cmd->job_step = ioa_cfg->reset; 6660 rc = IPR_RC_JOB_CONTINUE; 6661 } 6662 6663 return rc; 6664 } 6665 6666 /** 6667 * ipr_reset_alert_part2 - Alert the adapter of a pending reset 6668 * @ipr_cmd: ipr command struct 6669 * 6670 * Description: This function alerts the adapter that it will be reset. 6671 * If memory space is not currently enabled, proceed directly 6672 * to running BIST on the adapter. The timer must always be started 6673 * so we guarantee we do not run BIST from ipr_isr. 6674 * 6675 * Return value: 6676 * IPR_RC_JOB_RETURN 6677 **/ 6678 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 6679 { 6680 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6681 u16 cmd_reg; 6682 int rc; 6683 6684 ENTER; 6685 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 6686 6687 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 6688 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 6689 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg); 6690 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 6691 } else { 6692 ipr_cmd->job_step = ioa_cfg->reset; 6693 } 6694 6695 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 6696 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 6697 6698 LEAVE; 6699 return IPR_RC_JOB_RETURN; 6700 } 6701 6702 /** 6703 * ipr_reset_ucode_download_done - Microcode download completion 6704 * @ipr_cmd: ipr command struct 6705 * 6706 * Description: This function unmaps the microcode download buffer. 6707 * 6708 * Return value: 6709 * IPR_RC_JOB_CONTINUE 6710 **/ 6711 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 6712 { 6713 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6714 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 6715 6716 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, 6717 sglist->num_sg, DMA_TO_DEVICE); 6718 6719 ipr_cmd->job_step = ipr_reset_alert; 6720 return IPR_RC_JOB_CONTINUE; 6721 } 6722 6723 /** 6724 * ipr_reset_ucode_download - Download microcode to the adapter 6725 * @ipr_cmd: ipr command struct 6726 * 6727 * Description: This function checks to see if it there is microcode 6728 * to download to the adapter. If there is, a download is performed. 6729 * 6730 * Return value: 6731 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6732 **/ 6733 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 6734 { 6735 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6736 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 6737 6738 ENTER; 6739 ipr_cmd->job_step = ipr_reset_alert; 6740 6741 if (!sglist) 6742 return IPR_RC_JOB_CONTINUE; 6743 6744 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6745 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6746 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 6747 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 6748 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 6749 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 6750 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 6751 6752 ipr_build_ucode_ioadl(ipr_cmd, sglist); 6753 ipr_cmd->job_step = ipr_reset_ucode_download_done; 6754 6755 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 6756 IPR_WRITE_BUFFER_TIMEOUT); 6757 6758 LEAVE; 6759 return IPR_RC_JOB_RETURN; 6760 } 6761 6762 /** 6763 * ipr_reset_shutdown_ioa - Shutdown the adapter 6764 * @ipr_cmd: ipr command struct 6765 * 6766 * Description: This function issues an adapter shutdown of the 6767 * specified type to the specified adapter as part of the 6768 * adapter reset job. 6769 * 6770 * Return value: 6771 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6772 **/ 6773 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 6774 { 6775 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6776 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 6777 unsigned long timeout; 6778 int rc = IPR_RC_JOB_CONTINUE; 6779 6780 ENTER; 6781 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { 6782 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6783 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6784 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 6785 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 6786 6787 if (shutdown_type == IPR_SHUTDOWN_NORMAL) 6788 timeout = IPR_SHUTDOWN_TIMEOUT; 6789 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 6790 timeout = IPR_INTERNAL_TIMEOUT; 6791 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 6792 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO; 6793 else 6794 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 6795 6796 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 6797 6798 rc = IPR_RC_JOB_RETURN; 6799 ipr_cmd->job_step = ipr_reset_ucode_download; 6800 } else 6801 ipr_cmd->job_step = ipr_reset_alert; 6802 6803 LEAVE; 6804 return rc; 6805 } 6806 6807 /** 6808 * ipr_reset_ioa_job - Adapter reset job 6809 * @ipr_cmd: ipr command struct 6810 * 6811 * Description: This function is the job router for the adapter reset job. 6812 * 6813 * Return value: 6814 * none 6815 **/ 6816 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 6817 { 6818 u32 rc, ioasc; 6819 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6820 6821 do { 6822 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 6823 6824 if (ioa_cfg->reset_cmd != ipr_cmd) { 6825 /* 6826 * We are doing nested adapter resets and this is 6827 * not the current reset job. 6828 */ 6829 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6830 return; 6831 } 6832 6833 if (IPR_IOASC_SENSE_KEY(ioasc)) { 6834 rc = ipr_cmd->job_step_failed(ipr_cmd); 6835 if (rc == IPR_RC_JOB_RETURN) 6836 return; 6837 } 6838 6839 ipr_reinit_ipr_cmnd(ipr_cmd); 6840 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 6841 rc = ipr_cmd->job_step(ipr_cmd); 6842 } while(rc == IPR_RC_JOB_CONTINUE); 6843 } 6844 6845 /** 6846 * _ipr_initiate_ioa_reset - Initiate an adapter reset 6847 * @ioa_cfg: ioa config struct 6848 * @job_step: first job step of reset job 6849 * @shutdown_type: shutdown type 6850 * 6851 * Description: This function will initiate the reset of the given adapter 6852 * starting at the selected job step. 6853 * If the caller needs to wait on the completion of the reset, 6854 * the caller must sleep on the reset_wait_q. 6855 * 6856 * Return value: 6857 * none 6858 **/ 6859 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 6860 int (*job_step) (struct ipr_cmnd *), 6861 enum ipr_shutdown_type shutdown_type) 6862 { 6863 struct ipr_cmnd *ipr_cmd; 6864 6865 ioa_cfg->in_reset_reload = 1; 6866 ioa_cfg->allow_cmds = 0; 6867 scsi_block_requests(ioa_cfg->host); 6868 6869 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 6870 ioa_cfg->reset_cmd = ipr_cmd; 6871 ipr_cmd->job_step = job_step; 6872 ipr_cmd->u.shutdown_type = shutdown_type; 6873 6874 ipr_reset_ioa_job(ipr_cmd); 6875 } 6876 6877 /** 6878 * ipr_initiate_ioa_reset - Initiate an adapter reset 6879 * @ioa_cfg: ioa config struct 6880 * @shutdown_type: shutdown type 6881 * 6882 * Description: This function will initiate the reset of the given adapter. 6883 * If the caller needs to wait on the completion of the reset, 6884 * the caller must sleep on the reset_wait_q. 6885 * 6886 * Return value: 6887 * none 6888 **/ 6889 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 6890 enum ipr_shutdown_type shutdown_type) 6891 { 6892 if (ioa_cfg->ioa_is_dead) 6893 return; 6894 6895 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) 6896 ioa_cfg->sdt_state = ABORT_DUMP; 6897 6898 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 6899 dev_err(&ioa_cfg->pdev->dev, 6900 "IOA taken offline - error recovery failed\n"); 6901 6902 ioa_cfg->reset_retries = 0; 6903 ioa_cfg->ioa_is_dead = 1; 6904 6905 if (ioa_cfg->in_ioa_bringdown) { 6906 ioa_cfg->reset_cmd = NULL; 6907 ioa_cfg->in_reset_reload = 0; 6908 ipr_fail_all_ops(ioa_cfg); 6909 wake_up_all(&ioa_cfg->reset_wait_q); 6910 6911 spin_unlock_irq(ioa_cfg->host->host_lock); 6912 scsi_unblock_requests(ioa_cfg->host); 6913 spin_lock_irq(ioa_cfg->host->host_lock); 6914 return; 6915 } else { 6916 ioa_cfg->in_ioa_bringdown = 1; 6917 shutdown_type = IPR_SHUTDOWN_NONE; 6918 } 6919 } 6920 6921 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 6922 shutdown_type); 6923 } 6924 6925 /** 6926 * ipr_reset_freeze - Hold off all I/O activity 6927 * @ipr_cmd: ipr command struct 6928 * 6929 * Description: If the PCI slot is frozen, hold off all I/O 6930 * activity; then, as soon as the slot is available again, 6931 * initiate an adapter reset. 6932 */ 6933 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 6934 { 6935 /* Disallow new interrupts, avoid loop */ 6936 ipr_cmd->ioa_cfg->allow_interrupts = 0; 6937 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 6938 ipr_cmd->done = ipr_reset_ioa_job; 6939 return IPR_RC_JOB_RETURN; 6940 } 6941 6942 /** 6943 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 6944 * @pdev: PCI device struct 6945 * 6946 * Description: This routine is called to tell us that the PCI bus 6947 * is down. Can't do anything here, except put the device driver 6948 * into a holding pattern, waiting for the PCI bus to come back. 6949 */ 6950 static void ipr_pci_frozen(struct pci_dev *pdev) 6951 { 6952 unsigned long flags = 0; 6953 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6954 6955 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6956 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 6957 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6958 } 6959 6960 /** 6961 * ipr_pci_slot_reset - Called when PCI slot has been reset. 6962 * @pdev: PCI device struct 6963 * 6964 * Description: This routine is called by the pci error recovery 6965 * code after the PCI slot has been reset, just before we 6966 * should resume normal operations. 6967 */ 6968 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 6969 { 6970 unsigned long flags = 0; 6971 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6972 6973 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6974 if (ioa_cfg->needs_warm_reset) 6975 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6976 else 6977 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 6978 IPR_SHUTDOWN_NONE); 6979 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6980 return PCI_ERS_RESULT_RECOVERED; 6981 } 6982 6983 /** 6984 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 6985 * @pdev: PCI device struct 6986 * 6987 * Description: This routine is called when the PCI bus has 6988 * permanently failed. 6989 */ 6990 static void ipr_pci_perm_failure(struct pci_dev *pdev) 6991 { 6992 unsigned long flags = 0; 6993 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6994 6995 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6996 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 6997 ioa_cfg->sdt_state = ABORT_DUMP; 6998 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES; 6999 ioa_cfg->in_ioa_bringdown = 1; 7000 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 7001 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 7002 } 7003 7004 /** 7005 * ipr_pci_error_detected - Called when a PCI error is detected. 7006 * @pdev: PCI device struct 7007 * @state: PCI channel state 7008 * 7009 * Description: Called when a PCI error is detected. 7010 * 7011 * Return value: 7012 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 7013 */ 7014 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 7015 pci_channel_state_t state) 7016 { 7017 switch (state) { 7018 case pci_channel_io_frozen: 7019 ipr_pci_frozen(pdev); 7020 return PCI_ERS_RESULT_NEED_RESET; 7021 case pci_channel_io_perm_failure: 7022 ipr_pci_perm_failure(pdev); 7023 return PCI_ERS_RESULT_DISCONNECT; 7024 break; 7025 default: 7026 break; 7027 } 7028 return PCI_ERS_RESULT_NEED_RESET; 7029 } 7030 7031 /** 7032 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 7033 * @ioa_cfg: ioa cfg struct 7034 * 7035 * Description: This is the second phase of adapter intialization 7036 * This function takes care of initilizing the adapter to the point 7037 * where it can accept new commands. 7038 7039 * Return value: 7040 * 0 on success / -EIO on failure 7041 **/ 7042 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 7043 { 7044 int rc = 0; 7045 unsigned long host_lock_flags = 0; 7046 7047 ENTER; 7048 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7049 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 7050 if (ioa_cfg->needs_hard_reset) { 7051 ioa_cfg->needs_hard_reset = 0; 7052 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 7053 } else 7054 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 7055 IPR_SHUTDOWN_NONE); 7056 7057 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7058 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7059 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7060 7061 if (ioa_cfg->ioa_is_dead) { 7062 rc = -EIO; 7063 } else if (ipr_invalid_adapter(ioa_cfg)) { 7064 if (!ipr_testmode) 7065 rc = -EIO; 7066 7067 dev_err(&ioa_cfg->pdev->dev, 7068 "Adapter not supported in this hardware configuration.\n"); 7069 } 7070 7071 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7072 7073 LEAVE; 7074 return rc; 7075 } 7076 7077 /** 7078 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 7079 * @ioa_cfg: ioa config struct 7080 * 7081 * Return value: 7082 * none 7083 **/ 7084 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 7085 { 7086 int i; 7087 7088 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 7089 if (ioa_cfg->ipr_cmnd_list[i]) 7090 pci_pool_free(ioa_cfg->ipr_cmd_pool, 7091 ioa_cfg->ipr_cmnd_list[i], 7092 ioa_cfg->ipr_cmnd_list_dma[i]); 7093 7094 ioa_cfg->ipr_cmnd_list[i] = NULL; 7095 } 7096 7097 if (ioa_cfg->ipr_cmd_pool) 7098 pci_pool_destroy (ioa_cfg->ipr_cmd_pool); 7099 7100 ioa_cfg->ipr_cmd_pool = NULL; 7101 } 7102 7103 /** 7104 * ipr_free_mem - Frees memory allocated for an adapter 7105 * @ioa_cfg: ioa cfg struct 7106 * 7107 * Return value: 7108 * nothing 7109 **/ 7110 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 7111 { 7112 int i; 7113 7114 kfree(ioa_cfg->res_entries); 7115 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), 7116 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 7117 ipr_free_cmd_blks(ioa_cfg); 7118 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 7119 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 7120 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table), 7121 ioa_cfg->cfg_table, 7122 ioa_cfg->cfg_table_dma); 7123 7124 for (i = 0; i < IPR_NUM_HCAMS; i++) { 7125 pci_free_consistent(ioa_cfg->pdev, 7126 sizeof(struct ipr_hostrcb), 7127 ioa_cfg->hostrcb[i], 7128 ioa_cfg->hostrcb_dma[i]); 7129 } 7130 7131 ipr_free_dump(ioa_cfg); 7132 kfree(ioa_cfg->trace); 7133 } 7134 7135 /** 7136 * ipr_free_all_resources - Free all allocated resources for an adapter. 7137 * @ipr_cmd: ipr command struct 7138 * 7139 * This function frees all allocated resources for the 7140 * specified adapter. 7141 * 7142 * Return value: 7143 * none 7144 **/ 7145 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 7146 { 7147 struct pci_dev *pdev = ioa_cfg->pdev; 7148 7149 ENTER; 7150 free_irq(pdev->irq, ioa_cfg); 7151 iounmap(ioa_cfg->hdw_dma_regs); 7152 pci_release_regions(pdev); 7153 ipr_free_mem(ioa_cfg); 7154 scsi_host_put(ioa_cfg->host); 7155 pci_disable_device(pdev); 7156 LEAVE; 7157 } 7158 7159 /** 7160 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 7161 * @ioa_cfg: ioa config struct 7162 * 7163 * Return value: 7164 * 0 on success / -ENOMEM on allocation failure 7165 **/ 7166 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 7167 { 7168 struct ipr_cmnd *ipr_cmd; 7169 struct ipr_ioarcb *ioarcb; 7170 dma_addr_t dma_addr; 7171 int i; 7172 7173 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, 7174 sizeof(struct ipr_cmnd), 8, 0); 7175 7176 if (!ioa_cfg->ipr_cmd_pool) 7177 return -ENOMEM; 7178 7179 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 7180 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr); 7181 7182 if (!ipr_cmd) { 7183 ipr_free_cmd_blks(ioa_cfg); 7184 return -ENOMEM; 7185 } 7186 7187 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 7188 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 7189 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 7190 7191 ioarcb = &ipr_cmd->ioarcb; 7192 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 7193 ioarcb->host_response_handle = cpu_to_be32(i << 2); 7194 ioarcb->write_ioadl_addr = 7195 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); 7196 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 7197 ioarcb->ioasa_host_pci_addr = 7198 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa)); 7199 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 7200 ipr_cmd->cmd_index = i; 7201 ipr_cmd->ioa_cfg = ioa_cfg; 7202 ipr_cmd->sense_buffer_dma = dma_addr + 7203 offsetof(struct ipr_cmnd, sense_buffer); 7204 7205 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 7206 } 7207 7208 return 0; 7209 } 7210 7211 /** 7212 * ipr_alloc_mem - Allocate memory for an adapter 7213 * @ioa_cfg: ioa config struct 7214 * 7215 * Return value: 7216 * 0 on success / non-zero for error 7217 **/ 7218 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 7219 { 7220 struct pci_dev *pdev = ioa_cfg->pdev; 7221 int i, rc = -ENOMEM; 7222 7223 ENTER; 7224 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * 7225 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL); 7226 7227 if (!ioa_cfg->res_entries) 7228 goto out; 7229 7230 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++) 7231 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 7232 7233 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, 7234 sizeof(struct ipr_misc_cbs), 7235 &ioa_cfg->vpd_cbs_dma); 7236 7237 if (!ioa_cfg->vpd_cbs) 7238 goto out_free_res_entries; 7239 7240 if (ipr_alloc_cmd_blks(ioa_cfg)) 7241 goto out_free_vpd_cbs; 7242 7243 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, 7244 sizeof(u32) * IPR_NUM_CMD_BLKS, 7245 &ioa_cfg->host_rrq_dma); 7246 7247 if (!ioa_cfg->host_rrq) 7248 goto out_ipr_free_cmd_blocks; 7249 7250 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev, 7251 sizeof(struct ipr_config_table), 7252 &ioa_cfg->cfg_table_dma); 7253 7254 if (!ioa_cfg->cfg_table) 7255 goto out_free_host_rrq; 7256 7257 for (i = 0; i < IPR_NUM_HCAMS; i++) { 7258 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, 7259 sizeof(struct ipr_hostrcb), 7260 &ioa_cfg->hostrcb_dma[i]); 7261 7262 if (!ioa_cfg->hostrcb[i]) 7263 goto out_free_hostrcb_dma; 7264 7265 ioa_cfg->hostrcb[i]->hostrcb_dma = 7266 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 7267 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg; 7268 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 7269 } 7270 7271 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * 7272 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 7273 7274 if (!ioa_cfg->trace) 7275 goto out_free_hostrcb_dma; 7276 7277 rc = 0; 7278 out: 7279 LEAVE; 7280 return rc; 7281 7282 out_free_hostrcb_dma: 7283 while (i-- > 0) { 7284 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), 7285 ioa_cfg->hostrcb[i], 7286 ioa_cfg->hostrcb_dma[i]); 7287 } 7288 pci_free_consistent(pdev, sizeof(struct ipr_config_table), 7289 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma); 7290 out_free_host_rrq: 7291 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 7292 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 7293 out_ipr_free_cmd_blocks: 7294 ipr_free_cmd_blks(ioa_cfg); 7295 out_free_vpd_cbs: 7296 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), 7297 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 7298 out_free_res_entries: 7299 kfree(ioa_cfg->res_entries); 7300 goto out; 7301 } 7302 7303 /** 7304 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 7305 * @ioa_cfg: ioa config struct 7306 * 7307 * Return value: 7308 * none 7309 **/ 7310 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 7311 { 7312 int i; 7313 7314 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 7315 ioa_cfg->bus_attr[i].bus = i; 7316 ioa_cfg->bus_attr[i].qas_enabled = 0; 7317 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 7318 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 7319 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 7320 else 7321 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 7322 } 7323 } 7324 7325 /** 7326 * ipr_init_ioa_cfg - Initialize IOA config struct 7327 * @ioa_cfg: ioa config struct 7328 * @host: scsi host struct 7329 * @pdev: PCI dev struct 7330 * 7331 * Return value: 7332 * none 7333 **/ 7334 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 7335 struct Scsi_Host *host, struct pci_dev *pdev) 7336 { 7337 const struct ipr_interrupt_offsets *p; 7338 struct ipr_interrupts *t; 7339 void __iomem *base; 7340 7341 ioa_cfg->host = host; 7342 ioa_cfg->pdev = pdev; 7343 ioa_cfg->log_level = ipr_log_level; 7344 ioa_cfg->doorbell = IPR_DOORBELL; 7345 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 7346 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 7347 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); 7348 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); 7349 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 7350 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 7351 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 7352 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 7353 7354 INIT_LIST_HEAD(&ioa_cfg->free_q); 7355 INIT_LIST_HEAD(&ioa_cfg->pending_q); 7356 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 7357 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 7358 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 7359 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 7360 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread); 7361 init_waitqueue_head(&ioa_cfg->reset_wait_q); 7362 ioa_cfg->sdt_state = INACTIVE; 7363 if (ipr_enable_cache) 7364 ioa_cfg->cache_state = CACHE_ENABLED; 7365 else 7366 ioa_cfg->cache_state = CACHE_DISABLED; 7367 7368 ipr_initialize_bus_attr(ioa_cfg); 7369 7370 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 7371 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 7372 host->max_channel = IPR_MAX_BUS_TO_SCAN; 7373 host->unique_id = host->host_no; 7374 host->max_cmd_len = IPR_MAX_CDB_LEN; 7375 pci_set_drvdata(pdev, ioa_cfg); 7376 7377 p = &ioa_cfg->chip_cfg->regs; 7378 t = &ioa_cfg->regs; 7379 base = ioa_cfg->hdw_dma_regs; 7380 7381 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 7382 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 7383 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 7384 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 7385 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 7386 t->ioarrin_reg = base + p->ioarrin_reg; 7387 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 7388 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 7389 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 7390 } 7391 7392 /** 7393 * ipr_get_chip_cfg - Find adapter chip configuration 7394 * @dev_id: PCI device id struct 7395 * 7396 * Return value: 7397 * ptr to chip config on success / NULL on failure 7398 **/ 7399 static const struct ipr_chip_cfg_t * __devinit 7400 ipr_get_chip_cfg(const struct pci_device_id *dev_id) 7401 { 7402 int i; 7403 7404 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 7405 if (ipr_chip[i].vendor == dev_id->vendor && 7406 ipr_chip[i].device == dev_id->device) 7407 return ipr_chip[i].cfg; 7408 return NULL; 7409 } 7410 7411 /** 7412 * ipr_probe_ioa - Allocates memory and does first stage of initialization 7413 * @pdev: PCI device struct 7414 * @dev_id: PCI device id struct 7415 * 7416 * Return value: 7417 * 0 on success / non-zero on failure 7418 **/ 7419 static int __devinit ipr_probe_ioa(struct pci_dev *pdev, 7420 const struct pci_device_id *dev_id) 7421 { 7422 struct ipr_ioa_cfg *ioa_cfg; 7423 struct Scsi_Host *host; 7424 unsigned long ipr_regs_pci; 7425 void __iomem *ipr_regs; 7426 int rc = PCIBIOS_SUCCESSFUL; 7427 volatile u32 mask, uproc, interrupts; 7428 7429 ENTER; 7430 7431 if ((rc = pci_enable_device(pdev))) { 7432 dev_err(&pdev->dev, "Cannot enable adapter\n"); 7433 goto out; 7434 } 7435 7436 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 7437 7438 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 7439 7440 if (!host) { 7441 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 7442 rc = -ENOMEM; 7443 goto out_disable; 7444 } 7445 7446 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 7447 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 7448 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, 7449 sata_port_info.flags, &ipr_sata_ops); 7450 7451 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id); 7452 7453 if (!ioa_cfg->chip_cfg) { 7454 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 7455 dev_id->vendor, dev_id->device); 7456 goto out_scsi_host_put; 7457 } 7458 7459 if (ipr_transop_timeout) 7460 ioa_cfg->transop_timeout = ipr_transop_timeout; 7461 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT) 7462 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT; 7463 else 7464 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT; 7465 7466 ioa_cfg->revid = pdev->revision; 7467 7468 ipr_regs_pci = pci_resource_start(pdev, 0); 7469 7470 rc = pci_request_regions(pdev, IPR_NAME); 7471 if (rc < 0) { 7472 dev_err(&pdev->dev, 7473 "Couldn't register memory range of registers\n"); 7474 goto out_scsi_host_put; 7475 } 7476 7477 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0)); 7478 7479 if (!ipr_regs) { 7480 dev_err(&pdev->dev, 7481 "Couldn't map memory range of registers\n"); 7482 rc = -ENOMEM; 7483 goto out_release_regions; 7484 } 7485 7486 ioa_cfg->hdw_dma_regs = ipr_regs; 7487 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 7488 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 7489 7490 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 7491 7492 pci_set_master(pdev); 7493 7494 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 7495 if (rc < 0) { 7496 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); 7497 goto cleanup_nomem; 7498 } 7499 7500 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 7501 ioa_cfg->chip_cfg->cache_line_size); 7502 7503 if (rc != PCIBIOS_SUCCESSFUL) { 7504 dev_err(&pdev->dev, "Write of cache line size failed\n"); 7505 rc = -EIO; 7506 goto cleanup_nomem; 7507 } 7508 7509 /* Save away PCI config space for use following IOA reset */ 7510 rc = pci_save_state(pdev); 7511 7512 if (rc != PCIBIOS_SUCCESSFUL) { 7513 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 7514 rc = -EIO; 7515 goto cleanup_nomem; 7516 } 7517 7518 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 7519 goto cleanup_nomem; 7520 7521 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 7522 goto cleanup_nomem; 7523 7524 rc = ipr_alloc_mem(ioa_cfg); 7525 if (rc < 0) { 7526 dev_err(&pdev->dev, 7527 "Couldn't allocate enough memory for device driver!\n"); 7528 goto cleanup_nomem; 7529 } 7530 7531 /* 7532 * If HRRQ updated interrupt is not masked, or reset alert is set, 7533 * the card is in an unknown state and needs a hard reset 7534 */ 7535 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7536 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg); 7537 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg); 7538 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 7539 ioa_cfg->needs_hard_reset = 1; 7540 if (interrupts & IPR_PCII_ERROR_INTERRUPTS) 7541 ioa_cfg->needs_hard_reset = 1; 7542 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED) 7543 ioa_cfg->ioa_unit_checked = 1; 7544 7545 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 7546 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg); 7547 7548 if (rc) { 7549 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 7550 pdev->irq, rc); 7551 goto cleanup_nolog; 7552 } 7553 7554 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) || 7555 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) { 7556 ioa_cfg->needs_warm_reset = 1; 7557 ioa_cfg->reset = ipr_reset_slot_reset; 7558 } else 7559 ioa_cfg->reset = ipr_reset_start_bist; 7560 7561 spin_lock(&ipr_driver_lock); 7562 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 7563 spin_unlock(&ipr_driver_lock); 7564 7565 LEAVE; 7566 out: 7567 return rc; 7568 7569 cleanup_nolog: 7570 ipr_free_mem(ioa_cfg); 7571 cleanup_nomem: 7572 iounmap(ipr_regs); 7573 out_release_regions: 7574 pci_release_regions(pdev); 7575 out_scsi_host_put: 7576 scsi_host_put(host); 7577 out_disable: 7578 pci_disable_device(pdev); 7579 goto out; 7580 } 7581 7582 /** 7583 * ipr_scan_vsets - Scans for VSET devices 7584 * @ioa_cfg: ioa config struct 7585 * 7586 * Description: Since the VSET resources do not follow SAM in that we can have 7587 * sparse LUNs with no LUN 0, we have to scan for these ourselves. 7588 * 7589 * Return value: 7590 * none 7591 **/ 7592 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) 7593 { 7594 int target, lun; 7595 7596 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) 7597 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) 7598 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); 7599 } 7600 7601 /** 7602 * ipr_initiate_ioa_bringdown - Bring down an adapter 7603 * @ioa_cfg: ioa config struct 7604 * @shutdown_type: shutdown type 7605 * 7606 * Description: This function will initiate bringing down the adapter. 7607 * This consists of issuing an IOA shutdown to the adapter 7608 * to flush the cache, and running BIST. 7609 * If the caller needs to wait on the completion of the reset, 7610 * the caller must sleep on the reset_wait_q. 7611 * 7612 * Return value: 7613 * none 7614 **/ 7615 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 7616 enum ipr_shutdown_type shutdown_type) 7617 { 7618 ENTER; 7619 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 7620 ioa_cfg->sdt_state = ABORT_DUMP; 7621 ioa_cfg->reset_retries = 0; 7622 ioa_cfg->in_ioa_bringdown = 1; 7623 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 7624 LEAVE; 7625 } 7626 7627 /** 7628 * __ipr_remove - Remove a single adapter 7629 * @pdev: pci device struct 7630 * 7631 * Adapter hot plug remove entry point. 7632 * 7633 * Return value: 7634 * none 7635 **/ 7636 static void __ipr_remove(struct pci_dev *pdev) 7637 { 7638 unsigned long host_lock_flags = 0; 7639 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7640 ENTER; 7641 7642 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7643 while(ioa_cfg->in_reset_reload) { 7644 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7645 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7646 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7647 } 7648 7649 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 7650 7651 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7652 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7653 flush_scheduled_work(); 7654 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7655 7656 spin_lock(&ipr_driver_lock); 7657 list_del(&ioa_cfg->queue); 7658 spin_unlock(&ipr_driver_lock); 7659 7660 if (ioa_cfg->sdt_state == ABORT_DUMP) 7661 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 7662 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7663 7664 ipr_free_all_resources(ioa_cfg); 7665 7666 LEAVE; 7667 } 7668 7669 /** 7670 * ipr_remove - IOA hot plug remove entry point 7671 * @pdev: pci device struct 7672 * 7673 * Adapter hot plug remove entry point. 7674 * 7675 * Return value: 7676 * none 7677 **/ 7678 static void ipr_remove(struct pci_dev *pdev) 7679 { 7680 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7681 7682 ENTER; 7683 7684 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 7685 &ipr_trace_attr); 7686 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj, 7687 &ipr_dump_attr); 7688 scsi_remove_host(ioa_cfg->host); 7689 7690 __ipr_remove(pdev); 7691 7692 LEAVE; 7693 } 7694 7695 /** 7696 * ipr_probe - Adapter hot plug add entry point 7697 * 7698 * Return value: 7699 * 0 on success / non-zero on failure 7700 **/ 7701 static int __devinit ipr_probe(struct pci_dev *pdev, 7702 const struct pci_device_id *dev_id) 7703 { 7704 struct ipr_ioa_cfg *ioa_cfg; 7705 int rc; 7706 7707 rc = ipr_probe_ioa(pdev, dev_id); 7708 7709 if (rc) 7710 return rc; 7711 7712 ioa_cfg = pci_get_drvdata(pdev); 7713 rc = ipr_probe_ioa_part2(ioa_cfg); 7714 7715 if (rc) { 7716 __ipr_remove(pdev); 7717 return rc; 7718 } 7719 7720 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 7721 7722 if (rc) { 7723 __ipr_remove(pdev); 7724 return rc; 7725 } 7726 7727 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj, 7728 &ipr_trace_attr); 7729 7730 if (rc) { 7731 scsi_remove_host(ioa_cfg->host); 7732 __ipr_remove(pdev); 7733 return rc; 7734 } 7735 7736 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj, 7737 &ipr_dump_attr); 7738 7739 if (rc) { 7740 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 7741 &ipr_trace_attr); 7742 scsi_remove_host(ioa_cfg->host); 7743 __ipr_remove(pdev); 7744 return rc; 7745 } 7746 7747 scsi_scan_host(ioa_cfg->host); 7748 ipr_scan_vsets(ioa_cfg); 7749 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); 7750 ioa_cfg->allow_ml_add_del = 1; 7751 ioa_cfg->host->max_channel = IPR_VSET_BUS; 7752 schedule_work(&ioa_cfg->work_q); 7753 return 0; 7754 } 7755 7756 /** 7757 * ipr_shutdown - Shutdown handler. 7758 * @pdev: pci device struct 7759 * 7760 * This function is invoked upon system shutdown/reboot. It will issue 7761 * an adapter shutdown to the adapter to flush the write cache. 7762 * 7763 * Return value: 7764 * none 7765 **/ 7766 static void ipr_shutdown(struct pci_dev *pdev) 7767 { 7768 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7769 unsigned long lock_flags = 0; 7770 7771 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 7772 while(ioa_cfg->in_reset_reload) { 7773 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 7774 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7775 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 7776 } 7777 7778 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 7779 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 7780 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7781 } 7782 7783 static struct pci_device_id ipr_pci_table[] __devinitdata = { 7784 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7785 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 }, 7786 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7787 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 }, 7788 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7789 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 }, 7790 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7791 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 }, 7792 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7793 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 }, 7794 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7795 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 }, 7796 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7797 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 }, 7798 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7799 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 7800 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7801 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7802 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 7803 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7804 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 7805 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7806 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7807 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 7808 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7809 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7810 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 7811 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7812 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 7813 IPR_USE_LONG_TRANSOP_TIMEOUT}, 7814 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7815 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 7816 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7817 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7818 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 7819 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7820 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7821 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0, 7822 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7823 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7824 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 }, 7825 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7826 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 7827 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET }, 7828 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 7829 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 }, 7830 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7831 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 }, 7832 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7833 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 7834 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7835 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7836 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 7837 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7838 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E, 7839 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 7840 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7841 { } 7842 }; 7843 MODULE_DEVICE_TABLE(pci, ipr_pci_table); 7844 7845 static struct pci_error_handlers ipr_err_handler = { 7846 .error_detected = ipr_pci_error_detected, 7847 .slot_reset = ipr_pci_slot_reset, 7848 }; 7849 7850 static struct pci_driver ipr_driver = { 7851 .name = IPR_NAME, 7852 .id_table = ipr_pci_table, 7853 .probe = ipr_probe, 7854 .remove = ipr_remove, 7855 .shutdown = ipr_shutdown, 7856 .err_handler = &ipr_err_handler, 7857 .dynids.use_driver_data = 1 7858 }; 7859 7860 /** 7861 * ipr_init - Module entry point 7862 * 7863 * Return value: 7864 * 0 on success / negative value on failure 7865 **/ 7866 static int __init ipr_init(void) 7867 { 7868 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 7869 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 7870 7871 return pci_register_driver(&ipr_driver); 7872 } 7873 7874 /** 7875 * ipr_exit - Module unload 7876 * 7877 * Module unload entry point. 7878 * 7879 * Return value: 7880 * none 7881 **/ 7882 static void __exit ipr_exit(void) 7883 { 7884 pci_unregister_driver(&ipr_driver); 7885 } 7886 7887 module_init(ipr_init); 7888 module_exit(ipr_exit); 7889