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 struct list_head ipr_ioa_head = LIST_HEAD_INIT(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_classdev.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 class_device *cdev = container_of(kobj,struct class_device,kobj); 2455 struct Scsi_Host *shost = class_to_shost(cdev); 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 * @class_dev: class 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 class_device *class_dev, char *buf) 2502 { 2503 struct Scsi_Host *shost = class_to_shost(class_dev); 2504 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2505 unsigned long lock_flags = 0; 2506 int i, len = 0; 2507 2508 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2509 for (i = 0; i < ARRAY_SIZE(cache_state); i++) { 2510 if (cache_state[i].state == ioa_cfg->cache_state) { 2511 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name); 2512 break; 2513 } 2514 } 2515 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2516 return len; 2517 } 2518 2519 2520 /** 2521 * ipr_store_write_caching - Enable/disable adapter write cache 2522 * @class_dev: class_device struct 2523 * @buf: buffer 2524 * @count: buffer size 2525 * 2526 * This function will enable/disable adapter write cache. 2527 * 2528 * Return value: 2529 * count on success / other on failure 2530 **/ 2531 static ssize_t ipr_store_write_caching(struct class_device *class_dev, 2532 const char *buf, size_t count) 2533 { 2534 struct Scsi_Host *shost = class_to_shost(class_dev); 2535 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2536 unsigned long lock_flags = 0; 2537 enum ipr_cache_state new_state = CACHE_INVALID; 2538 int i; 2539 2540 if (!capable(CAP_SYS_ADMIN)) 2541 return -EACCES; 2542 if (ioa_cfg->cache_state == CACHE_NONE) 2543 return -EINVAL; 2544 2545 for (i = 0; i < ARRAY_SIZE(cache_state); i++) { 2546 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) { 2547 new_state = cache_state[i].state; 2548 break; 2549 } 2550 } 2551 2552 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED) 2553 return -EINVAL; 2554 2555 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2556 if (ioa_cfg->cache_state == new_state) { 2557 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2558 return count; 2559 } 2560 2561 ioa_cfg->cache_state = new_state; 2562 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n", 2563 new_state == CACHE_ENABLED ? "Enabling" : "Disabling"); 2564 if (!ioa_cfg->in_reset_reload) 2565 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2566 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2567 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2568 2569 return count; 2570 } 2571 2572 static struct class_device_attribute ipr_ioa_cache_attr = { 2573 .attr = { 2574 .name = "write_cache", 2575 .mode = S_IRUGO | S_IWUSR, 2576 }, 2577 .show = ipr_show_write_caching, 2578 .store = ipr_store_write_caching 2579 }; 2580 2581 /** 2582 * ipr_show_fw_version - Show the firmware version 2583 * @class_dev: class device struct 2584 * @buf: buffer 2585 * 2586 * Return value: 2587 * number of bytes printed to buffer 2588 **/ 2589 static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf) 2590 { 2591 struct Scsi_Host *shost = class_to_shost(class_dev); 2592 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2593 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2594 unsigned long lock_flags = 0; 2595 int len; 2596 2597 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2598 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 2599 ucode_vpd->major_release, ucode_vpd->card_type, 2600 ucode_vpd->minor_release[0], 2601 ucode_vpd->minor_release[1]); 2602 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2603 return len; 2604 } 2605 2606 static struct class_device_attribute ipr_fw_version_attr = { 2607 .attr = { 2608 .name = "fw_version", 2609 .mode = S_IRUGO, 2610 }, 2611 .show = ipr_show_fw_version, 2612 }; 2613 2614 /** 2615 * ipr_show_log_level - Show the adapter's error logging level 2616 * @class_dev: class device struct 2617 * @buf: buffer 2618 * 2619 * Return value: 2620 * number of bytes printed to buffer 2621 **/ 2622 static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf) 2623 { 2624 struct Scsi_Host *shost = class_to_shost(class_dev); 2625 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2626 unsigned long lock_flags = 0; 2627 int len; 2628 2629 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2630 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 2631 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2632 return len; 2633 } 2634 2635 /** 2636 * ipr_store_log_level - Change the adapter's error logging level 2637 * @class_dev: class device struct 2638 * @buf: buffer 2639 * 2640 * Return value: 2641 * number of bytes printed to buffer 2642 **/ 2643 static ssize_t ipr_store_log_level(struct class_device *class_dev, 2644 const char *buf, size_t count) 2645 { 2646 struct Scsi_Host *shost = class_to_shost(class_dev); 2647 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2648 unsigned long lock_flags = 0; 2649 2650 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2651 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 2652 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2653 return strlen(buf); 2654 } 2655 2656 static struct class_device_attribute ipr_log_level_attr = { 2657 .attr = { 2658 .name = "log_level", 2659 .mode = S_IRUGO | S_IWUSR, 2660 }, 2661 .show = ipr_show_log_level, 2662 .store = ipr_store_log_level 2663 }; 2664 2665 /** 2666 * ipr_store_diagnostics - IOA Diagnostics interface 2667 * @class_dev: class_device struct 2668 * @buf: buffer 2669 * @count: buffer size 2670 * 2671 * This function will reset the adapter and wait a reasonable 2672 * amount of time for any errors that the adapter might log. 2673 * 2674 * Return value: 2675 * count on success / other on failure 2676 **/ 2677 static ssize_t ipr_store_diagnostics(struct class_device *class_dev, 2678 const char *buf, size_t count) 2679 { 2680 struct Scsi_Host *shost = class_to_shost(class_dev); 2681 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2682 unsigned long lock_flags = 0; 2683 int rc = count; 2684 2685 if (!capable(CAP_SYS_ADMIN)) 2686 return -EACCES; 2687 2688 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2689 while(ioa_cfg->in_reset_reload) { 2690 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2691 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2692 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2693 } 2694 2695 ioa_cfg->errors_logged = 0; 2696 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2697 2698 if (ioa_cfg->in_reset_reload) { 2699 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2700 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2701 2702 /* Wait for a second for any errors to be logged */ 2703 msleep(1000); 2704 } else { 2705 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2706 return -EIO; 2707 } 2708 2709 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2710 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 2711 rc = -EIO; 2712 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2713 2714 return rc; 2715 } 2716 2717 static struct class_device_attribute ipr_diagnostics_attr = { 2718 .attr = { 2719 .name = "run_diagnostics", 2720 .mode = S_IWUSR, 2721 }, 2722 .store = ipr_store_diagnostics 2723 }; 2724 2725 /** 2726 * ipr_show_adapter_state - Show the adapter's state 2727 * @class_dev: class device struct 2728 * @buf: buffer 2729 * 2730 * Return value: 2731 * number of bytes printed to buffer 2732 **/ 2733 static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf) 2734 { 2735 struct Scsi_Host *shost = class_to_shost(class_dev); 2736 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2737 unsigned long lock_flags = 0; 2738 int len; 2739 2740 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2741 if (ioa_cfg->ioa_is_dead) 2742 len = snprintf(buf, PAGE_SIZE, "offline\n"); 2743 else 2744 len = snprintf(buf, PAGE_SIZE, "online\n"); 2745 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2746 return len; 2747 } 2748 2749 /** 2750 * ipr_store_adapter_state - Change adapter state 2751 * @class_dev: class_device struct 2752 * @buf: buffer 2753 * @count: buffer size 2754 * 2755 * This function will change the adapter's state. 2756 * 2757 * Return value: 2758 * count on success / other on failure 2759 **/ 2760 static ssize_t ipr_store_adapter_state(struct class_device *class_dev, 2761 const char *buf, size_t count) 2762 { 2763 struct Scsi_Host *shost = class_to_shost(class_dev); 2764 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2765 unsigned long lock_flags; 2766 int result = count; 2767 2768 if (!capable(CAP_SYS_ADMIN)) 2769 return -EACCES; 2770 2771 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2772 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) { 2773 ioa_cfg->ioa_is_dead = 0; 2774 ioa_cfg->reset_retries = 0; 2775 ioa_cfg->in_ioa_bringdown = 0; 2776 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2777 } 2778 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2779 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2780 2781 return result; 2782 } 2783 2784 static struct class_device_attribute ipr_ioa_state_attr = { 2785 .attr = { 2786 .name = "state", 2787 .mode = S_IRUGO | S_IWUSR, 2788 }, 2789 .show = ipr_show_adapter_state, 2790 .store = ipr_store_adapter_state 2791 }; 2792 2793 /** 2794 * ipr_store_reset_adapter - Reset the adapter 2795 * @class_dev: class_device struct 2796 * @buf: buffer 2797 * @count: buffer size 2798 * 2799 * This function will reset the adapter. 2800 * 2801 * Return value: 2802 * count on success / other on failure 2803 **/ 2804 static ssize_t ipr_store_reset_adapter(struct class_device *class_dev, 2805 const char *buf, size_t count) 2806 { 2807 struct Scsi_Host *shost = class_to_shost(class_dev); 2808 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2809 unsigned long lock_flags; 2810 int result = count; 2811 2812 if (!capable(CAP_SYS_ADMIN)) 2813 return -EACCES; 2814 2815 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2816 if (!ioa_cfg->in_reset_reload) 2817 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2818 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2819 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2820 2821 return result; 2822 } 2823 2824 static struct class_device_attribute ipr_ioa_reset_attr = { 2825 .attr = { 2826 .name = "reset_host", 2827 .mode = S_IWUSR, 2828 }, 2829 .store = ipr_store_reset_adapter 2830 }; 2831 2832 /** 2833 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 2834 * @buf_len: buffer length 2835 * 2836 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 2837 * list to use for microcode download 2838 * 2839 * Return value: 2840 * pointer to sglist / NULL on failure 2841 **/ 2842 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 2843 { 2844 int sg_size, order, bsize_elem, num_elem, i, j; 2845 struct ipr_sglist *sglist; 2846 struct scatterlist *scatterlist; 2847 struct page *page; 2848 2849 /* Get the minimum size per scatter/gather element */ 2850 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 2851 2852 /* Get the actual size per element */ 2853 order = get_order(sg_size); 2854 2855 /* Determine the actual number of bytes per element */ 2856 bsize_elem = PAGE_SIZE * (1 << order); 2857 2858 /* Determine the actual number of sg entries needed */ 2859 if (buf_len % bsize_elem) 2860 num_elem = (buf_len / bsize_elem) + 1; 2861 else 2862 num_elem = buf_len / bsize_elem; 2863 2864 /* Allocate a scatter/gather list for the DMA */ 2865 sglist = kzalloc(sizeof(struct ipr_sglist) + 2866 (sizeof(struct scatterlist) * (num_elem - 1)), 2867 GFP_KERNEL); 2868 2869 if (sglist == NULL) { 2870 ipr_trace; 2871 return NULL; 2872 } 2873 2874 scatterlist = sglist->scatterlist; 2875 2876 sglist->order = order; 2877 sglist->num_sg = num_elem; 2878 2879 /* Allocate a bunch of sg elements */ 2880 for (i = 0; i < num_elem; i++) { 2881 page = alloc_pages(GFP_KERNEL, order); 2882 if (!page) { 2883 ipr_trace; 2884 2885 /* Free up what we already allocated */ 2886 for (j = i - 1; j >= 0; j--) 2887 __free_pages(scatterlist[j].page, order); 2888 kfree(sglist); 2889 return NULL; 2890 } 2891 2892 scatterlist[i].page = page; 2893 } 2894 2895 return sglist; 2896 } 2897 2898 /** 2899 * ipr_free_ucode_buffer - Frees a microcode download buffer 2900 * @p_dnld: scatter/gather list pointer 2901 * 2902 * Free a DMA'able ucode download buffer previously allocated with 2903 * ipr_alloc_ucode_buffer 2904 * 2905 * Return value: 2906 * nothing 2907 **/ 2908 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 2909 { 2910 int i; 2911 2912 for (i = 0; i < sglist->num_sg; i++) 2913 __free_pages(sglist->scatterlist[i].page, sglist->order); 2914 2915 kfree(sglist); 2916 } 2917 2918 /** 2919 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 2920 * @sglist: scatter/gather list pointer 2921 * @buffer: buffer pointer 2922 * @len: buffer length 2923 * 2924 * Copy a microcode image from a user buffer into a buffer allocated by 2925 * ipr_alloc_ucode_buffer 2926 * 2927 * Return value: 2928 * 0 on success / other on failure 2929 **/ 2930 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 2931 u8 *buffer, u32 len) 2932 { 2933 int bsize_elem, i, result = 0; 2934 struct scatterlist *scatterlist; 2935 void *kaddr; 2936 2937 /* Determine the actual number of bytes per element */ 2938 bsize_elem = PAGE_SIZE * (1 << sglist->order); 2939 2940 scatterlist = sglist->scatterlist; 2941 2942 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { 2943 kaddr = kmap(scatterlist[i].page); 2944 memcpy(kaddr, buffer, bsize_elem); 2945 kunmap(scatterlist[i].page); 2946 2947 scatterlist[i].length = bsize_elem; 2948 2949 if (result != 0) { 2950 ipr_trace; 2951 return result; 2952 } 2953 } 2954 2955 if (len % bsize_elem) { 2956 kaddr = kmap(scatterlist[i].page); 2957 memcpy(kaddr, buffer, len % bsize_elem); 2958 kunmap(scatterlist[i].page); 2959 2960 scatterlist[i].length = len % bsize_elem; 2961 } 2962 2963 sglist->buffer_len = len; 2964 return result; 2965 } 2966 2967 /** 2968 * ipr_build_ucode_ioadl - Build a microcode download IOADL 2969 * @ipr_cmd: ipr command struct 2970 * @sglist: scatter/gather list 2971 * 2972 * Builds a microcode download IOA data list (IOADL). 2973 * 2974 **/ 2975 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, 2976 struct ipr_sglist *sglist) 2977 { 2978 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 2979 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 2980 struct scatterlist *scatterlist = sglist->scatterlist; 2981 int i; 2982 2983 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 2984 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 2985 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len); 2986 ioarcb->write_ioadl_len = 2987 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 2988 2989 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 2990 ioadl[i].flags_and_data_len = 2991 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); 2992 ioadl[i].address = 2993 cpu_to_be32(sg_dma_address(&scatterlist[i])); 2994 } 2995 2996 ioadl[i-1].flags_and_data_len |= 2997 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 2998 } 2999 3000 /** 3001 * ipr_update_ioa_ucode - Update IOA's microcode 3002 * @ioa_cfg: ioa config struct 3003 * @sglist: scatter/gather list 3004 * 3005 * Initiate an adapter reset to update the IOA's microcode 3006 * 3007 * Return value: 3008 * 0 on success / -EIO on failure 3009 **/ 3010 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, 3011 struct ipr_sglist *sglist) 3012 { 3013 unsigned long lock_flags; 3014 3015 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3016 while(ioa_cfg->in_reset_reload) { 3017 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3018 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3019 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3020 } 3021 3022 if (ioa_cfg->ucode_sglist) { 3023 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3024 dev_err(&ioa_cfg->pdev->dev, 3025 "Microcode download already in progress\n"); 3026 return -EIO; 3027 } 3028 3029 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist, 3030 sglist->num_sg, DMA_TO_DEVICE); 3031 3032 if (!sglist->num_dma_sg) { 3033 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3034 dev_err(&ioa_cfg->pdev->dev, 3035 "Failed to map microcode download buffer!\n"); 3036 return -EIO; 3037 } 3038 3039 ioa_cfg->ucode_sglist = sglist; 3040 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3041 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3042 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3043 3044 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3045 ioa_cfg->ucode_sglist = NULL; 3046 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3047 return 0; 3048 } 3049 3050 /** 3051 * ipr_store_update_fw - Update the firmware on the adapter 3052 * @class_dev: class_device struct 3053 * @buf: buffer 3054 * @count: buffer size 3055 * 3056 * This function will update the firmware on the adapter. 3057 * 3058 * Return value: 3059 * count on success / other on failure 3060 **/ 3061 static ssize_t ipr_store_update_fw(struct class_device *class_dev, 3062 const char *buf, size_t count) 3063 { 3064 struct Scsi_Host *shost = class_to_shost(class_dev); 3065 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3066 struct ipr_ucode_image_header *image_hdr; 3067 const struct firmware *fw_entry; 3068 struct ipr_sglist *sglist; 3069 char fname[100]; 3070 char *src; 3071 int len, result, dnld_size; 3072 3073 if (!capable(CAP_SYS_ADMIN)) 3074 return -EACCES; 3075 3076 len = snprintf(fname, 99, "%s", buf); 3077 fname[len-1] = '\0'; 3078 3079 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 3080 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 3081 return -EIO; 3082 } 3083 3084 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 3085 3086 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size || 3087 (ioa_cfg->vpd_cbs->page3_data.card_type && 3088 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) { 3089 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n"); 3090 release_firmware(fw_entry); 3091 return -EINVAL; 3092 } 3093 3094 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 3095 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 3096 sglist = ipr_alloc_ucode_buffer(dnld_size); 3097 3098 if (!sglist) { 3099 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 3100 release_firmware(fw_entry); 3101 return -ENOMEM; 3102 } 3103 3104 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 3105 3106 if (result) { 3107 dev_err(&ioa_cfg->pdev->dev, 3108 "Microcode buffer copy to DMA buffer failed\n"); 3109 goto out; 3110 } 3111 3112 result = ipr_update_ioa_ucode(ioa_cfg, sglist); 3113 3114 if (!result) 3115 result = count; 3116 out: 3117 ipr_free_ucode_buffer(sglist); 3118 release_firmware(fw_entry); 3119 return result; 3120 } 3121 3122 static struct class_device_attribute ipr_update_fw_attr = { 3123 .attr = { 3124 .name = "update_fw", 3125 .mode = S_IWUSR, 3126 }, 3127 .store = ipr_store_update_fw 3128 }; 3129 3130 static struct class_device_attribute *ipr_ioa_attrs[] = { 3131 &ipr_fw_version_attr, 3132 &ipr_log_level_attr, 3133 &ipr_diagnostics_attr, 3134 &ipr_ioa_state_attr, 3135 &ipr_ioa_reset_attr, 3136 &ipr_update_fw_attr, 3137 &ipr_ioa_cache_attr, 3138 NULL, 3139 }; 3140 3141 #ifdef CONFIG_SCSI_IPR_DUMP 3142 /** 3143 * ipr_read_dump - Dump the adapter 3144 * @kobj: kobject struct 3145 * @bin_attr: bin_attribute struct 3146 * @buf: buffer 3147 * @off: offset 3148 * @count: buffer size 3149 * 3150 * Return value: 3151 * number of bytes printed to buffer 3152 **/ 3153 static ssize_t ipr_read_dump(struct kobject *kobj, 3154 struct bin_attribute *bin_attr, 3155 char *buf, loff_t off, size_t count) 3156 { 3157 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 3158 struct Scsi_Host *shost = class_to_shost(cdev); 3159 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3160 struct ipr_dump *dump; 3161 unsigned long lock_flags = 0; 3162 char *src; 3163 int len; 3164 size_t rc = count; 3165 3166 if (!capable(CAP_SYS_ADMIN)) 3167 return -EACCES; 3168 3169 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3170 dump = ioa_cfg->dump; 3171 3172 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 3173 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3174 return 0; 3175 } 3176 kref_get(&dump->kref); 3177 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3178 3179 if (off > dump->driver_dump.hdr.len) { 3180 kref_put(&dump->kref, ipr_release_dump); 3181 return 0; 3182 } 3183 3184 if (off + count > dump->driver_dump.hdr.len) { 3185 count = dump->driver_dump.hdr.len - off; 3186 rc = count; 3187 } 3188 3189 if (count && off < sizeof(dump->driver_dump)) { 3190 if (off + count > sizeof(dump->driver_dump)) 3191 len = sizeof(dump->driver_dump) - off; 3192 else 3193 len = count; 3194 src = (u8 *)&dump->driver_dump + off; 3195 memcpy(buf, src, len); 3196 buf += len; 3197 off += len; 3198 count -= len; 3199 } 3200 3201 off -= sizeof(dump->driver_dump); 3202 3203 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) { 3204 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data)) 3205 len = offsetof(struct ipr_ioa_dump, ioa_data) - off; 3206 else 3207 len = count; 3208 src = (u8 *)&dump->ioa_dump + off; 3209 memcpy(buf, src, len); 3210 buf += len; 3211 off += len; 3212 count -= len; 3213 } 3214 3215 off -= offsetof(struct ipr_ioa_dump, ioa_data); 3216 3217 while (count) { 3218 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 3219 len = PAGE_ALIGN(off) - off; 3220 else 3221 len = count; 3222 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 3223 src += off & ~PAGE_MASK; 3224 memcpy(buf, src, len); 3225 buf += len; 3226 off += len; 3227 count -= len; 3228 } 3229 3230 kref_put(&dump->kref, ipr_release_dump); 3231 return rc; 3232 } 3233 3234 /** 3235 * ipr_alloc_dump - Prepare for adapter dump 3236 * @ioa_cfg: ioa config struct 3237 * 3238 * Return value: 3239 * 0 on success / other on failure 3240 **/ 3241 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 3242 { 3243 struct ipr_dump *dump; 3244 unsigned long lock_flags = 0; 3245 3246 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); 3247 3248 if (!dump) { 3249 ipr_err("Dump memory allocation failed\n"); 3250 return -ENOMEM; 3251 } 3252 3253 kref_init(&dump->kref); 3254 dump->ioa_cfg = ioa_cfg; 3255 3256 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3257 3258 if (INACTIVE != ioa_cfg->sdt_state) { 3259 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3260 kfree(dump); 3261 return 0; 3262 } 3263 3264 ioa_cfg->dump = dump; 3265 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 3266 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) { 3267 ioa_cfg->dump_taken = 1; 3268 schedule_work(&ioa_cfg->work_q); 3269 } 3270 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3271 3272 return 0; 3273 } 3274 3275 /** 3276 * ipr_free_dump - Free adapter dump memory 3277 * @ioa_cfg: ioa config struct 3278 * 3279 * Return value: 3280 * 0 on success / other on failure 3281 **/ 3282 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 3283 { 3284 struct ipr_dump *dump; 3285 unsigned long lock_flags = 0; 3286 3287 ENTER; 3288 3289 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3290 dump = ioa_cfg->dump; 3291 if (!dump) { 3292 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3293 return 0; 3294 } 3295 3296 ioa_cfg->dump = NULL; 3297 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3298 3299 kref_put(&dump->kref, ipr_release_dump); 3300 3301 LEAVE; 3302 return 0; 3303 } 3304 3305 /** 3306 * ipr_write_dump - Setup dump state of adapter 3307 * @kobj: kobject struct 3308 * @bin_attr: bin_attribute struct 3309 * @buf: buffer 3310 * @off: offset 3311 * @count: buffer size 3312 * 3313 * Return value: 3314 * number of bytes printed to buffer 3315 **/ 3316 static ssize_t ipr_write_dump(struct kobject *kobj, 3317 struct bin_attribute *bin_attr, 3318 char *buf, loff_t off, size_t count) 3319 { 3320 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 3321 struct Scsi_Host *shost = class_to_shost(cdev); 3322 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3323 int rc; 3324 3325 if (!capable(CAP_SYS_ADMIN)) 3326 return -EACCES; 3327 3328 if (buf[0] == '1') 3329 rc = ipr_alloc_dump(ioa_cfg); 3330 else if (buf[0] == '0') 3331 rc = ipr_free_dump(ioa_cfg); 3332 else 3333 return -EINVAL; 3334 3335 if (rc) 3336 return rc; 3337 else 3338 return count; 3339 } 3340 3341 static struct bin_attribute ipr_dump_attr = { 3342 .attr = { 3343 .name = "dump", 3344 .mode = S_IRUSR | S_IWUSR, 3345 }, 3346 .size = 0, 3347 .read = ipr_read_dump, 3348 .write = ipr_write_dump 3349 }; 3350 #else 3351 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 3352 #endif 3353 3354 /** 3355 * ipr_change_queue_depth - Change the device's queue depth 3356 * @sdev: scsi device struct 3357 * @qdepth: depth to set 3358 * 3359 * Return value: 3360 * actual depth set 3361 **/ 3362 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) 3363 { 3364 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3365 struct ipr_resource_entry *res; 3366 unsigned long lock_flags = 0; 3367 3368 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3369 res = (struct ipr_resource_entry *)sdev->hostdata; 3370 3371 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN) 3372 qdepth = IPR_MAX_CMD_PER_ATA_LUN; 3373 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3374 3375 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); 3376 return sdev->queue_depth; 3377 } 3378 3379 /** 3380 * ipr_change_queue_type - Change the device's queue type 3381 * @dsev: scsi device struct 3382 * @tag_type: type of tags to use 3383 * 3384 * Return value: 3385 * actual queue type set 3386 **/ 3387 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type) 3388 { 3389 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3390 struct ipr_resource_entry *res; 3391 unsigned long lock_flags = 0; 3392 3393 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3394 res = (struct ipr_resource_entry *)sdev->hostdata; 3395 3396 if (res) { 3397 if (ipr_is_gscsi(res) && sdev->tagged_supported) { 3398 /* 3399 * We don't bother quiescing the device here since the 3400 * adapter firmware does it for us. 3401 */ 3402 scsi_set_tag_type(sdev, tag_type); 3403 3404 if (tag_type) 3405 scsi_activate_tcq(sdev, sdev->queue_depth); 3406 else 3407 scsi_deactivate_tcq(sdev, sdev->queue_depth); 3408 } else 3409 tag_type = 0; 3410 } else 3411 tag_type = 0; 3412 3413 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3414 return tag_type; 3415 } 3416 3417 /** 3418 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 3419 * @dev: device struct 3420 * @buf: buffer 3421 * 3422 * Return value: 3423 * number of bytes printed to buffer 3424 **/ 3425 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) 3426 { 3427 struct scsi_device *sdev = to_scsi_device(dev); 3428 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3429 struct ipr_resource_entry *res; 3430 unsigned long lock_flags = 0; 3431 ssize_t len = -ENXIO; 3432 3433 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3434 res = (struct ipr_resource_entry *)sdev->hostdata; 3435 if (res) 3436 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle); 3437 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3438 return len; 3439 } 3440 3441 static struct device_attribute ipr_adapter_handle_attr = { 3442 .attr = { 3443 .name = "adapter_handle", 3444 .mode = S_IRUSR, 3445 }, 3446 .show = ipr_show_adapter_handle 3447 }; 3448 3449 static struct device_attribute *ipr_dev_attrs[] = { 3450 &ipr_adapter_handle_attr, 3451 NULL, 3452 }; 3453 3454 /** 3455 * ipr_biosparam - Return the HSC mapping 3456 * @sdev: scsi device struct 3457 * @block_device: block device pointer 3458 * @capacity: capacity of the device 3459 * @parm: Array containing returned HSC values. 3460 * 3461 * This function generates the HSC parms that fdisk uses. 3462 * We want to make sure we return something that places partitions 3463 * on 4k boundaries for best performance with the IOA. 3464 * 3465 * Return value: 3466 * 0 on success 3467 **/ 3468 static int ipr_biosparam(struct scsi_device *sdev, 3469 struct block_device *block_device, 3470 sector_t capacity, int *parm) 3471 { 3472 int heads, sectors; 3473 sector_t cylinders; 3474 3475 heads = 128; 3476 sectors = 32; 3477 3478 cylinders = capacity; 3479 sector_div(cylinders, (128 * 32)); 3480 3481 /* return result */ 3482 parm[0] = heads; 3483 parm[1] = sectors; 3484 parm[2] = cylinders; 3485 3486 return 0; 3487 } 3488 3489 /** 3490 * ipr_find_starget - Find target based on bus/target. 3491 * @starget: scsi target struct 3492 * 3493 * Return value: 3494 * resource entry pointer if found / NULL if not found 3495 **/ 3496 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget) 3497 { 3498 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 3499 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 3500 struct ipr_resource_entry *res; 3501 3502 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3503 if ((res->cfgte.res_addr.bus == starget->channel) && 3504 (res->cfgte.res_addr.target == starget->id) && 3505 (res->cfgte.res_addr.lun == 0)) { 3506 return res; 3507 } 3508 } 3509 3510 return NULL; 3511 } 3512 3513 static struct ata_port_info sata_port_info; 3514 3515 /** 3516 * ipr_target_alloc - Prepare for commands to a SCSI target 3517 * @starget: scsi target struct 3518 * 3519 * If the device is a SATA device, this function allocates an 3520 * ATA port with libata, else it does nothing. 3521 * 3522 * Return value: 3523 * 0 on success / non-0 on failure 3524 **/ 3525 static int ipr_target_alloc(struct scsi_target *starget) 3526 { 3527 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 3528 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 3529 struct ipr_sata_port *sata_port; 3530 struct ata_port *ap; 3531 struct ipr_resource_entry *res; 3532 unsigned long lock_flags; 3533 3534 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3535 res = ipr_find_starget(starget); 3536 starget->hostdata = NULL; 3537 3538 if (res && ipr_is_gata(res)) { 3539 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3540 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL); 3541 if (!sata_port) 3542 return -ENOMEM; 3543 3544 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost); 3545 if (ap) { 3546 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3547 sata_port->ioa_cfg = ioa_cfg; 3548 sata_port->ap = ap; 3549 sata_port->res = res; 3550 3551 res->sata_port = sata_port; 3552 ap->private_data = sata_port; 3553 starget->hostdata = sata_port; 3554 } else { 3555 kfree(sata_port); 3556 return -ENOMEM; 3557 } 3558 } 3559 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3560 3561 return 0; 3562 } 3563 3564 /** 3565 * ipr_target_destroy - Destroy a SCSI target 3566 * @starget: scsi target struct 3567 * 3568 * If the device was a SATA device, this function frees the libata 3569 * ATA port, else it does nothing. 3570 * 3571 **/ 3572 static void ipr_target_destroy(struct scsi_target *starget) 3573 { 3574 struct ipr_sata_port *sata_port = starget->hostdata; 3575 3576 if (sata_port) { 3577 starget->hostdata = NULL; 3578 ata_sas_port_destroy(sata_port->ap); 3579 kfree(sata_port); 3580 } 3581 } 3582 3583 /** 3584 * ipr_find_sdev - Find device based on bus/target/lun. 3585 * @sdev: scsi device struct 3586 * 3587 * Return value: 3588 * resource entry pointer if found / NULL if not found 3589 **/ 3590 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev) 3591 { 3592 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3593 struct ipr_resource_entry *res; 3594 3595 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3596 if ((res->cfgte.res_addr.bus == sdev->channel) && 3597 (res->cfgte.res_addr.target == sdev->id) && 3598 (res->cfgte.res_addr.lun == sdev->lun)) 3599 return res; 3600 } 3601 3602 return NULL; 3603 } 3604 3605 /** 3606 * ipr_slave_destroy - Unconfigure a SCSI device 3607 * @sdev: scsi device struct 3608 * 3609 * Return value: 3610 * nothing 3611 **/ 3612 static void ipr_slave_destroy(struct scsi_device *sdev) 3613 { 3614 struct ipr_resource_entry *res; 3615 struct ipr_ioa_cfg *ioa_cfg; 3616 unsigned long lock_flags = 0; 3617 3618 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3619 3620 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3621 res = (struct ipr_resource_entry *) sdev->hostdata; 3622 if (res) { 3623 if (res->sata_port) 3624 ata_port_disable(res->sata_port->ap); 3625 sdev->hostdata = NULL; 3626 res->sdev = NULL; 3627 res->sata_port = NULL; 3628 } 3629 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3630 } 3631 3632 /** 3633 * ipr_slave_configure - Configure a SCSI device 3634 * @sdev: scsi device struct 3635 * 3636 * This function configures the specified scsi device. 3637 * 3638 * Return value: 3639 * 0 on success 3640 **/ 3641 static int ipr_slave_configure(struct scsi_device *sdev) 3642 { 3643 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3644 struct ipr_resource_entry *res; 3645 unsigned long lock_flags = 0; 3646 3647 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3648 res = sdev->hostdata; 3649 if (res) { 3650 if (ipr_is_af_dasd_device(res)) 3651 sdev->type = TYPE_RAID; 3652 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { 3653 sdev->scsi_level = 4; 3654 sdev->no_uld_attach = 1; 3655 } 3656 if (ipr_is_vset_device(res)) { 3657 sdev->timeout = IPR_VSET_RW_TIMEOUT; 3658 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); 3659 } 3660 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)) 3661 sdev->allow_restart = 1; 3662 if (ipr_is_gata(res) && res->sata_port) { 3663 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN); 3664 ata_sas_slave_configure(sdev, res->sata_port->ap); 3665 } else { 3666 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); 3667 } 3668 } 3669 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3670 return 0; 3671 } 3672 3673 /** 3674 * ipr_ata_slave_alloc - Prepare for commands to a SATA device 3675 * @sdev: scsi device struct 3676 * 3677 * This function initializes an ATA port so that future commands 3678 * sent through queuecommand will work. 3679 * 3680 * Return value: 3681 * 0 on success 3682 **/ 3683 static int ipr_ata_slave_alloc(struct scsi_device *sdev) 3684 { 3685 struct ipr_sata_port *sata_port = NULL; 3686 int rc = -ENXIO; 3687 3688 ENTER; 3689 if (sdev->sdev_target) 3690 sata_port = sdev->sdev_target->hostdata; 3691 if (sata_port) 3692 rc = ata_sas_port_init(sata_port->ap); 3693 if (rc) 3694 ipr_slave_destroy(sdev); 3695 3696 LEAVE; 3697 return rc; 3698 } 3699 3700 /** 3701 * ipr_slave_alloc - Prepare for commands to a device. 3702 * @sdev: scsi device struct 3703 * 3704 * This function saves a pointer to the resource entry 3705 * in the scsi device struct if the device exists. We 3706 * can then use this pointer in ipr_queuecommand when 3707 * handling new commands. 3708 * 3709 * Return value: 3710 * 0 on success / -ENXIO if device does not exist 3711 **/ 3712 static int ipr_slave_alloc(struct scsi_device *sdev) 3713 { 3714 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3715 struct ipr_resource_entry *res; 3716 unsigned long lock_flags; 3717 int rc = -ENXIO; 3718 3719 sdev->hostdata = NULL; 3720 3721 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3722 3723 res = ipr_find_sdev(sdev); 3724 if (res) { 3725 res->sdev = sdev; 3726 res->add_to_ml = 0; 3727 res->in_erp = 0; 3728 sdev->hostdata = res; 3729 if (!ipr_is_naca_model(res)) 3730 res->needs_sync_complete = 1; 3731 rc = 0; 3732 if (ipr_is_gata(res)) { 3733 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3734 return ipr_ata_slave_alloc(sdev); 3735 } 3736 } 3737 3738 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3739 3740 return rc; 3741 } 3742 3743 /** 3744 * ipr_eh_host_reset - Reset the host adapter 3745 * @scsi_cmd: scsi command struct 3746 * 3747 * Return value: 3748 * SUCCESS / FAILED 3749 **/ 3750 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd) 3751 { 3752 struct ipr_ioa_cfg *ioa_cfg; 3753 int rc; 3754 3755 ENTER; 3756 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 3757 3758 dev_err(&ioa_cfg->pdev->dev, 3759 "Adapter being reset as a result of error recovery.\n"); 3760 3761 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 3762 ioa_cfg->sdt_state = GET_DUMP; 3763 3764 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV); 3765 3766 LEAVE; 3767 return rc; 3768 } 3769 3770 static int ipr_eh_host_reset(struct scsi_cmnd * cmd) 3771 { 3772 int rc; 3773 3774 spin_lock_irq(cmd->device->host->host_lock); 3775 rc = __ipr_eh_host_reset(cmd); 3776 spin_unlock_irq(cmd->device->host->host_lock); 3777 3778 return rc; 3779 } 3780 3781 /** 3782 * ipr_device_reset - Reset the device 3783 * @ioa_cfg: ioa config struct 3784 * @res: resource entry struct 3785 * 3786 * This function issues a device reset to the affected device. 3787 * If the device is a SCSI device, a LUN reset will be sent 3788 * to the device first. If that does not work, a target reset 3789 * will be sent. If the device is a SATA device, a PHY reset will 3790 * be sent. 3791 * 3792 * Return value: 3793 * 0 on success / non-zero on failure 3794 **/ 3795 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, 3796 struct ipr_resource_entry *res) 3797 { 3798 struct ipr_cmnd *ipr_cmd; 3799 struct ipr_ioarcb *ioarcb; 3800 struct ipr_cmd_pkt *cmd_pkt; 3801 struct ipr_ioarcb_ata_regs *regs; 3802 u32 ioasc; 3803 3804 ENTER; 3805 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3806 ioarcb = &ipr_cmd->ioarcb; 3807 cmd_pkt = &ioarcb->cmd_pkt; 3808 regs = &ioarcb->add_data.u.regs; 3809 3810 ioarcb->res_handle = res->cfgte.res_handle; 3811 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3812 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 3813 if (ipr_is_gata(res)) { 3814 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET; 3815 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags)); 3816 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 3817 } 3818 3819 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 3820 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3821 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3822 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) 3823 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata, 3824 sizeof(struct ipr_ioasa_gata)); 3825 3826 LEAVE; 3827 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0); 3828 } 3829 3830 /** 3831 * ipr_sata_reset - Reset the SATA port 3832 * @link: SATA link to reset 3833 * @classes: class of the attached device 3834 * 3835 * This function issues a SATA phy reset to the affected ATA link. 3836 * 3837 * Return value: 3838 * 0 on success / non-zero on failure 3839 **/ 3840 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes, 3841 unsigned long deadline) 3842 { 3843 struct ipr_sata_port *sata_port = link->ap->private_data; 3844 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 3845 struct ipr_resource_entry *res; 3846 unsigned long lock_flags = 0; 3847 int rc = -ENXIO; 3848 3849 ENTER; 3850 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3851 while(ioa_cfg->in_reset_reload) { 3852 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3853 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3854 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3855 } 3856 3857 res = sata_port->res; 3858 if (res) { 3859 rc = ipr_device_reset(ioa_cfg, res); 3860 switch(res->cfgte.proto) { 3861 case IPR_PROTO_SATA: 3862 case IPR_PROTO_SAS_STP: 3863 *classes = ATA_DEV_ATA; 3864 break; 3865 case IPR_PROTO_SATA_ATAPI: 3866 case IPR_PROTO_SAS_STP_ATAPI: 3867 *classes = ATA_DEV_ATAPI; 3868 break; 3869 default: 3870 *classes = ATA_DEV_UNKNOWN; 3871 break; 3872 }; 3873 } 3874 3875 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3876 LEAVE; 3877 return rc; 3878 } 3879 3880 /** 3881 * ipr_eh_dev_reset - Reset the device 3882 * @scsi_cmd: scsi command struct 3883 * 3884 * This function issues a device reset to the affected device. 3885 * A LUN reset will be sent to the device first. If that does 3886 * not work, a target reset will be sent. 3887 * 3888 * Return value: 3889 * SUCCESS / FAILED 3890 **/ 3891 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) 3892 { 3893 struct ipr_cmnd *ipr_cmd; 3894 struct ipr_ioa_cfg *ioa_cfg; 3895 struct ipr_resource_entry *res; 3896 struct ata_port *ap; 3897 int rc = 0; 3898 3899 ENTER; 3900 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 3901 res = scsi_cmd->device->hostdata; 3902 3903 if (!res) 3904 return FAILED; 3905 3906 /* 3907 * If we are currently going through reset/reload, return failed. This will force the 3908 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 3909 * reset to complete 3910 */ 3911 if (ioa_cfg->in_reset_reload) 3912 return FAILED; 3913 if (ioa_cfg->ioa_is_dead) 3914 return FAILED; 3915 3916 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3917 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) { 3918 if (ipr_cmd->scsi_cmd) 3919 ipr_cmd->done = ipr_scsi_eh_done; 3920 if (ipr_cmd->qc) 3921 ipr_cmd->done = ipr_sata_eh_done; 3922 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) { 3923 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT; 3924 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED; 3925 } 3926 } 3927 } 3928 3929 res->resetting_device = 1; 3930 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); 3931 3932 if (ipr_is_gata(res) && res->sata_port) { 3933 ap = res->sata_port->ap; 3934 spin_unlock_irq(scsi_cmd->device->host->host_lock); 3935 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL); 3936 spin_lock_irq(scsi_cmd->device->host->host_lock); 3937 3938 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3939 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) { 3940 rc = -EIO; 3941 break; 3942 } 3943 } 3944 } else 3945 rc = ipr_device_reset(ioa_cfg, res); 3946 res->resetting_device = 0; 3947 3948 LEAVE; 3949 return (rc ? FAILED : SUCCESS); 3950 } 3951 3952 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd) 3953 { 3954 int rc; 3955 3956 spin_lock_irq(cmd->device->host->host_lock); 3957 rc = __ipr_eh_dev_reset(cmd); 3958 spin_unlock_irq(cmd->device->host->host_lock); 3959 3960 return rc; 3961 } 3962 3963 /** 3964 * ipr_bus_reset_done - Op done function for bus reset. 3965 * @ipr_cmd: ipr command struct 3966 * 3967 * This function is the op done function for a bus reset 3968 * 3969 * Return value: 3970 * none 3971 **/ 3972 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 3973 { 3974 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3975 struct ipr_resource_entry *res; 3976 3977 ENTER; 3978 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3979 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle, 3980 sizeof(res->cfgte.res_handle))) { 3981 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus); 3982 break; 3983 } 3984 } 3985 3986 /* 3987 * If abort has not completed, indicate the reset has, else call the 3988 * abort's done function to wake the sleeping eh thread 3989 */ 3990 if (ipr_cmd->sibling->sibling) 3991 ipr_cmd->sibling->sibling = NULL; 3992 else 3993 ipr_cmd->sibling->done(ipr_cmd->sibling); 3994 3995 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3996 LEAVE; 3997 } 3998 3999 /** 4000 * ipr_abort_timeout - An abort task has timed out 4001 * @ipr_cmd: ipr command struct 4002 * 4003 * This function handles when an abort task times out. If this 4004 * happens we issue a bus reset since we have resources tied 4005 * up that must be freed before returning to the midlayer. 4006 * 4007 * Return value: 4008 * none 4009 **/ 4010 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 4011 { 4012 struct ipr_cmnd *reset_cmd; 4013 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4014 struct ipr_cmd_pkt *cmd_pkt; 4015 unsigned long lock_flags = 0; 4016 4017 ENTER; 4018 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4019 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 4020 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4021 return; 4022 } 4023 4024 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n"); 4025 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4026 ipr_cmd->sibling = reset_cmd; 4027 reset_cmd->sibling = ipr_cmd; 4028 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 4029 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 4030 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4031 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 4032 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 4033 4034 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 4035 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4036 LEAVE; 4037 } 4038 4039 /** 4040 * ipr_cancel_op - Cancel specified op 4041 * @scsi_cmd: scsi command struct 4042 * 4043 * This function cancels specified op. 4044 * 4045 * Return value: 4046 * SUCCESS / FAILED 4047 **/ 4048 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) 4049 { 4050 struct ipr_cmnd *ipr_cmd; 4051 struct ipr_ioa_cfg *ioa_cfg; 4052 struct ipr_resource_entry *res; 4053 struct ipr_cmd_pkt *cmd_pkt; 4054 u32 ioasc; 4055 int op_found = 0; 4056 4057 ENTER; 4058 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 4059 res = scsi_cmd->device->hostdata; 4060 4061 /* If we are currently going through reset/reload, return failed. 4062 * This will force the mid-layer to call ipr_eh_host_reset, 4063 * which will then go to sleep and wait for the reset to complete 4064 */ 4065 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) 4066 return FAILED; 4067 if (!res || !ipr_is_gscsi(res)) 4068 return FAILED; 4069 4070 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4071 if (ipr_cmd->scsi_cmd == scsi_cmd) { 4072 ipr_cmd->done = ipr_scsi_eh_done; 4073 op_found = 1; 4074 break; 4075 } 4076 } 4077 4078 if (!op_found) 4079 return SUCCESS; 4080 4081 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4082 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 4083 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4084 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4085 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4086 ipr_cmd->u.sdev = scsi_cmd->device; 4087 4088 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n", 4089 scsi_cmd->cmnd[0]); 4090 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 4091 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4092 4093 /* 4094 * If the abort task timed out and we sent a bus reset, we will get 4095 * one the following responses to the abort 4096 */ 4097 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 4098 ioasc = 0; 4099 ipr_trace; 4100 } 4101 4102 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4103 if (!ipr_is_naca_model(res)) 4104 res->needs_sync_complete = 1; 4105 4106 LEAVE; 4107 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); 4108 } 4109 4110 /** 4111 * ipr_eh_abort - Abort a single op 4112 * @scsi_cmd: scsi command struct 4113 * 4114 * Return value: 4115 * SUCCESS / FAILED 4116 **/ 4117 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) 4118 { 4119 unsigned long flags; 4120 int rc; 4121 4122 ENTER; 4123 4124 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 4125 rc = ipr_cancel_op(scsi_cmd); 4126 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 4127 4128 LEAVE; 4129 return rc; 4130 } 4131 4132 /** 4133 * ipr_handle_other_interrupt - Handle "other" interrupts 4134 * @ioa_cfg: ioa config struct 4135 * @int_reg: interrupt register 4136 * 4137 * Return value: 4138 * IRQ_NONE / IRQ_HANDLED 4139 **/ 4140 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 4141 volatile u32 int_reg) 4142 { 4143 irqreturn_t rc = IRQ_HANDLED; 4144 4145 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 4146 /* Mask the interrupt */ 4147 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 4148 4149 /* Clear the interrupt */ 4150 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); 4151 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 4152 4153 list_del(&ioa_cfg->reset_cmd->queue); 4154 del_timer(&ioa_cfg->reset_cmd->timer); 4155 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 4156 } else { 4157 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 4158 ioa_cfg->ioa_unit_checked = 1; 4159 else 4160 dev_err(&ioa_cfg->pdev->dev, 4161 "Permanent IOA failure. 0x%08X\n", int_reg); 4162 4163 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4164 ioa_cfg->sdt_state = GET_DUMP; 4165 4166 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 4167 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4168 } 4169 4170 return rc; 4171 } 4172 4173 /** 4174 * ipr_isr - Interrupt service routine 4175 * @irq: irq number 4176 * @devp: pointer to ioa config struct 4177 * 4178 * Return value: 4179 * IRQ_NONE / IRQ_HANDLED 4180 **/ 4181 static irqreturn_t ipr_isr(int irq, void *devp) 4182 { 4183 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 4184 unsigned long lock_flags = 0; 4185 volatile u32 int_reg, int_mask_reg; 4186 u32 ioasc; 4187 u16 cmd_index; 4188 struct ipr_cmnd *ipr_cmd; 4189 irqreturn_t rc = IRQ_NONE; 4190 4191 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4192 4193 /* If interrupts are disabled, ignore the interrupt */ 4194 if (!ioa_cfg->allow_interrupts) { 4195 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4196 return IRQ_NONE; 4197 } 4198 4199 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 4200 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 4201 4202 /* If an interrupt on the adapter did not occur, ignore it */ 4203 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) { 4204 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4205 return IRQ_NONE; 4206 } 4207 4208 while (1) { 4209 ipr_cmd = NULL; 4210 4211 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 4212 ioa_cfg->toggle_bit) { 4213 4214 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & 4215 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 4216 4217 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { 4218 ioa_cfg->errors_logged++; 4219 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n"); 4220 4221 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4222 ioa_cfg->sdt_state = GET_DUMP; 4223 4224 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4225 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4226 return IRQ_HANDLED; 4227 } 4228 4229 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 4230 4231 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4232 4233 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 4234 4235 list_del(&ipr_cmd->queue); 4236 del_timer(&ipr_cmd->timer); 4237 ipr_cmd->done(ipr_cmd); 4238 4239 rc = IRQ_HANDLED; 4240 4241 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { 4242 ioa_cfg->hrrq_curr++; 4243 } else { 4244 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 4245 ioa_cfg->toggle_bit ^= 1u; 4246 } 4247 } 4248 4249 if (ipr_cmd != NULL) { 4250 /* Clear the PCI interrupt */ 4251 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg); 4252 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 4253 } else 4254 break; 4255 } 4256 4257 if (unlikely(rc == IRQ_NONE)) 4258 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 4259 4260 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4261 return rc; 4262 } 4263 4264 /** 4265 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 4266 * @ioa_cfg: ioa config struct 4267 * @ipr_cmd: ipr command struct 4268 * 4269 * Return value: 4270 * 0 on success / -1 on failure 4271 **/ 4272 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 4273 struct ipr_cmnd *ipr_cmd) 4274 { 4275 int i, nseg; 4276 struct scatterlist *sg; 4277 u32 length; 4278 u32 ioadl_flags = 0; 4279 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4280 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4281 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4282 4283 length = scsi_bufflen(scsi_cmd); 4284 if (!length) 4285 return 0; 4286 4287 nseg = scsi_dma_map(scsi_cmd); 4288 if (nseg < 0) { 4289 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 4290 return -1; 4291 } 4292 4293 ipr_cmd->dma_use_sg = nseg; 4294 4295 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 4296 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 4297 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4298 ioarcb->write_data_transfer_length = cpu_to_be32(length); 4299 ioarcb->write_ioadl_len = 4300 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 4301 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 4302 ioadl_flags = IPR_IOADL_FLAGS_READ; 4303 ioarcb->read_data_transfer_length = cpu_to_be32(length); 4304 ioarcb->read_ioadl_len = 4305 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 4306 } 4307 4308 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) { 4309 ioadl = ioarcb->add_data.u.ioadl; 4310 ioarcb->write_ioadl_addr = 4311 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) + 4312 offsetof(struct ipr_ioarcb, add_data)); 4313 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 4314 } 4315 4316 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 4317 ioadl[i].flags_and_data_len = 4318 cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 4319 ioadl[i].address = cpu_to_be32(sg_dma_address(sg)); 4320 } 4321 4322 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 4323 return 0; 4324 } 4325 4326 /** 4327 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes 4328 * @scsi_cmd: scsi command struct 4329 * 4330 * Return value: 4331 * task attributes 4332 **/ 4333 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) 4334 { 4335 u8 tag[2]; 4336 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; 4337 4338 if (scsi_populate_tag_msg(scsi_cmd, tag)) { 4339 switch (tag[0]) { 4340 case MSG_SIMPLE_TAG: 4341 rc = IPR_FLAGS_LO_SIMPLE_TASK; 4342 break; 4343 case MSG_HEAD_TAG: 4344 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; 4345 break; 4346 case MSG_ORDERED_TAG: 4347 rc = IPR_FLAGS_LO_ORDERED_TASK; 4348 break; 4349 }; 4350 } 4351 4352 return rc; 4353 } 4354 4355 /** 4356 * ipr_erp_done - Process completion of ERP for a device 4357 * @ipr_cmd: ipr command struct 4358 * 4359 * This function copies the sense buffer into the scsi_cmd 4360 * struct and pushes the scsi_done function. 4361 * 4362 * Return value: 4363 * nothing 4364 **/ 4365 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 4366 { 4367 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4368 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4369 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4370 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4371 4372 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 4373 scsi_cmd->result |= (DID_ERROR << 16); 4374 scmd_printk(KERN_ERR, scsi_cmd, 4375 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 4376 } else { 4377 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 4378 SCSI_SENSE_BUFFERSIZE); 4379 } 4380 4381 if (res) { 4382 if (!ipr_is_naca_model(res)) 4383 res->needs_sync_complete = 1; 4384 res->in_erp = 0; 4385 } 4386 scsi_dma_unmap(ipr_cmd->scsi_cmd); 4387 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4388 scsi_cmd->scsi_done(scsi_cmd); 4389 } 4390 4391 /** 4392 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 4393 * @ipr_cmd: ipr command struct 4394 * 4395 * Return value: 4396 * none 4397 **/ 4398 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 4399 { 4400 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4401 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4402 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr); 4403 4404 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 4405 ioarcb->write_data_transfer_length = 0; 4406 ioarcb->read_data_transfer_length = 0; 4407 ioarcb->write_ioadl_len = 0; 4408 ioarcb->read_ioadl_len = 0; 4409 ioasa->ioasc = 0; 4410 ioasa->residual_data_len = 0; 4411 ioarcb->write_ioadl_addr = 4412 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); 4413 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 4414 } 4415 4416 /** 4417 * ipr_erp_request_sense - Send request sense to a device 4418 * @ipr_cmd: ipr command struct 4419 * 4420 * This function sends a request sense to a device as a result 4421 * of a check condition. 4422 * 4423 * Return value: 4424 * nothing 4425 **/ 4426 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 4427 { 4428 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4429 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4430 4431 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 4432 ipr_erp_done(ipr_cmd); 4433 return; 4434 } 4435 4436 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 4437 4438 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 4439 cmd_pkt->cdb[0] = REQUEST_SENSE; 4440 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 4441 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 4442 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 4443 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 4444 4445 ipr_cmd->ioadl[0].flags_and_data_len = 4446 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE); 4447 ipr_cmd->ioadl[0].address = 4448 cpu_to_be32(ipr_cmd->sense_buffer_dma); 4449 4450 ipr_cmd->ioarcb.read_ioadl_len = 4451 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4452 ipr_cmd->ioarcb.read_data_transfer_length = 4453 cpu_to_be32(SCSI_SENSE_BUFFERSIZE); 4454 4455 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 4456 IPR_REQUEST_SENSE_TIMEOUT * 2); 4457 } 4458 4459 /** 4460 * ipr_erp_cancel_all - Send cancel all to a device 4461 * @ipr_cmd: ipr command struct 4462 * 4463 * This function sends a cancel all to a device to clear the 4464 * queue. If we are running TCQ on the device, QERR is set to 1, 4465 * which means all outstanding ops have been dropped on the floor. 4466 * Cancel all will return them to us. 4467 * 4468 * Return value: 4469 * nothing 4470 **/ 4471 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 4472 { 4473 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4474 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4475 struct ipr_cmd_pkt *cmd_pkt; 4476 4477 res->in_erp = 1; 4478 4479 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 4480 4481 if (!scsi_get_tag_type(scsi_cmd->device)) { 4482 ipr_erp_request_sense(ipr_cmd); 4483 return; 4484 } 4485 4486 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4487 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4488 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4489 4490 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 4491 IPR_CANCEL_ALL_TIMEOUT); 4492 } 4493 4494 /** 4495 * ipr_dump_ioasa - Dump contents of IOASA 4496 * @ioa_cfg: ioa config struct 4497 * @ipr_cmd: ipr command struct 4498 * @res: resource entry struct 4499 * 4500 * This function is invoked by the interrupt handler when ops 4501 * fail. It will log the IOASA if appropriate. Only called 4502 * for GPDD ops. 4503 * 4504 * Return value: 4505 * none 4506 **/ 4507 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 4508 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res) 4509 { 4510 int i; 4511 u16 data_len; 4512 u32 ioasc, fd_ioasc; 4513 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4514 __be32 *ioasa_data = (__be32 *)ioasa; 4515 int error_index; 4516 4517 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK; 4518 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK; 4519 4520 if (0 == ioasc) 4521 return; 4522 4523 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 4524 return; 4525 4526 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc) 4527 error_index = ipr_get_error(fd_ioasc); 4528 else 4529 error_index = ipr_get_error(ioasc); 4530 4531 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 4532 /* Don't log an error if the IOA already logged one */ 4533 if (ioasa->ilid != 0) 4534 return; 4535 4536 if (!ipr_is_gscsi(res)) 4537 return; 4538 4539 if (ipr_error_table[error_index].log_ioasa == 0) 4540 return; 4541 } 4542 4543 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error); 4544 4545 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len)) 4546 data_len = sizeof(struct ipr_ioasa); 4547 else 4548 data_len = be16_to_cpu(ioasa->ret_stat_len); 4549 4550 ipr_err("IOASA Dump:\n"); 4551 4552 for (i = 0; i < data_len / 4; i += 4) { 4553 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 4554 be32_to_cpu(ioasa_data[i]), 4555 be32_to_cpu(ioasa_data[i+1]), 4556 be32_to_cpu(ioasa_data[i+2]), 4557 be32_to_cpu(ioasa_data[i+3])); 4558 } 4559 } 4560 4561 /** 4562 * ipr_gen_sense - Generate SCSI sense data from an IOASA 4563 * @ioasa: IOASA 4564 * @sense_buf: sense data buffer 4565 * 4566 * Return value: 4567 * none 4568 **/ 4569 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 4570 { 4571 u32 failing_lba; 4572 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 4573 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 4574 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4575 u32 ioasc = be32_to_cpu(ioasa->ioasc); 4576 4577 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 4578 4579 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 4580 return; 4581 4582 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 4583 4584 if (ipr_is_vset_device(res) && 4585 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 4586 ioasa->u.vset.failing_lba_hi != 0) { 4587 sense_buf[0] = 0x72; 4588 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 4589 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 4590 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 4591 4592 sense_buf[7] = 12; 4593 sense_buf[8] = 0; 4594 sense_buf[9] = 0x0A; 4595 sense_buf[10] = 0x80; 4596 4597 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 4598 4599 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 4600 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 4601 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 4602 sense_buf[15] = failing_lba & 0x000000ff; 4603 4604 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 4605 4606 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 4607 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 4608 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 4609 sense_buf[19] = failing_lba & 0x000000ff; 4610 } else { 4611 sense_buf[0] = 0x70; 4612 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 4613 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 4614 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 4615 4616 /* Illegal request */ 4617 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 4618 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 4619 sense_buf[7] = 10; /* additional length */ 4620 4621 /* IOARCB was in error */ 4622 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 4623 sense_buf[15] = 0xC0; 4624 else /* Parameter data was invalid */ 4625 sense_buf[15] = 0x80; 4626 4627 sense_buf[16] = 4628 ((IPR_FIELD_POINTER_MASK & 4629 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff; 4630 sense_buf[17] = 4631 (IPR_FIELD_POINTER_MASK & 4632 be32_to_cpu(ioasa->ioasc_specific)) & 0xff; 4633 } else { 4634 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 4635 if (ipr_is_vset_device(res)) 4636 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 4637 else 4638 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 4639 4640 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 4641 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 4642 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 4643 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 4644 sense_buf[6] = failing_lba & 0x000000ff; 4645 } 4646 4647 sense_buf[7] = 6; /* additional length */ 4648 } 4649 } 4650 } 4651 4652 /** 4653 * ipr_get_autosense - Copy autosense data to sense buffer 4654 * @ipr_cmd: ipr command struct 4655 * 4656 * This function copies the autosense buffer to the buffer 4657 * in the scsi_cmd, if there is autosense available. 4658 * 4659 * Return value: 4660 * 1 if autosense was available / 0 if not 4661 **/ 4662 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) 4663 { 4664 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4665 4666 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0) 4667 return 0; 4668 4669 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, 4670 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), 4671 SCSI_SENSE_BUFFERSIZE)); 4672 return 1; 4673 } 4674 4675 /** 4676 * ipr_erp_start - Process an error response for a SCSI op 4677 * @ioa_cfg: ioa config struct 4678 * @ipr_cmd: ipr command struct 4679 * 4680 * This function determines whether or not to initiate ERP 4681 * on the affected device. 4682 * 4683 * Return value: 4684 * nothing 4685 **/ 4686 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 4687 struct ipr_cmnd *ipr_cmd) 4688 { 4689 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4690 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4691 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4692 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK; 4693 4694 if (!res) { 4695 ipr_scsi_eh_done(ipr_cmd); 4696 return; 4697 } 4698 4699 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS) 4700 ipr_gen_sense(ipr_cmd); 4701 4702 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 4703 4704 switch (masked_ioasc) { 4705 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 4706 if (ipr_is_naca_model(res)) 4707 scsi_cmd->result |= (DID_ABORT << 16); 4708 else 4709 scsi_cmd->result |= (DID_IMM_RETRY << 16); 4710 break; 4711 case IPR_IOASC_IR_RESOURCE_HANDLE: 4712 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: 4713 scsi_cmd->result |= (DID_NO_CONNECT << 16); 4714 break; 4715 case IPR_IOASC_HW_SEL_TIMEOUT: 4716 scsi_cmd->result |= (DID_NO_CONNECT << 16); 4717 if (!ipr_is_naca_model(res)) 4718 res->needs_sync_complete = 1; 4719 break; 4720 case IPR_IOASC_SYNC_REQUIRED: 4721 if (!res->in_erp) 4722 res->needs_sync_complete = 1; 4723 scsi_cmd->result |= (DID_IMM_RETRY << 16); 4724 break; 4725 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 4726 case IPR_IOASA_IR_DUAL_IOA_DISABLED: 4727 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 4728 break; 4729 case IPR_IOASC_BUS_WAS_RESET: 4730 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 4731 /* 4732 * Report the bus reset and ask for a retry. The device 4733 * will give CC/UA the next command. 4734 */ 4735 if (!res->resetting_device) 4736 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 4737 scsi_cmd->result |= (DID_ERROR << 16); 4738 if (!ipr_is_naca_model(res)) 4739 res->needs_sync_complete = 1; 4740 break; 4741 case IPR_IOASC_HW_DEV_BUS_STATUS: 4742 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 4743 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 4744 if (!ipr_get_autosense(ipr_cmd)) { 4745 if (!ipr_is_naca_model(res)) { 4746 ipr_erp_cancel_all(ipr_cmd); 4747 return; 4748 } 4749 } 4750 } 4751 if (!ipr_is_naca_model(res)) 4752 res->needs_sync_complete = 1; 4753 break; 4754 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 4755 break; 4756 default: 4757 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 4758 scsi_cmd->result |= (DID_ERROR << 16); 4759 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) 4760 res->needs_sync_complete = 1; 4761 break; 4762 } 4763 4764 scsi_dma_unmap(ipr_cmd->scsi_cmd); 4765 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4766 scsi_cmd->scsi_done(scsi_cmd); 4767 } 4768 4769 /** 4770 * ipr_scsi_done - mid-layer done function 4771 * @ipr_cmd: ipr command struct 4772 * 4773 * This function is invoked by the interrupt handler for 4774 * ops generated by the SCSI mid-layer 4775 * 4776 * Return value: 4777 * none 4778 **/ 4779 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 4780 { 4781 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4782 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4783 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4784 4785 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->ioasa.residual_data_len)); 4786 4787 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 4788 scsi_dma_unmap(ipr_cmd->scsi_cmd); 4789 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4790 scsi_cmd->scsi_done(scsi_cmd); 4791 } else 4792 ipr_erp_start(ioa_cfg, ipr_cmd); 4793 } 4794 4795 /** 4796 * ipr_queuecommand - Queue a mid-layer request 4797 * @scsi_cmd: scsi command struct 4798 * @done: done function 4799 * 4800 * This function queues a request generated by the mid-layer. 4801 * 4802 * Return value: 4803 * 0 on success 4804 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 4805 * SCSI_MLQUEUE_HOST_BUSY if host is busy 4806 **/ 4807 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, 4808 void (*done) (struct scsi_cmnd *)) 4809 { 4810 struct ipr_ioa_cfg *ioa_cfg; 4811 struct ipr_resource_entry *res; 4812 struct ipr_ioarcb *ioarcb; 4813 struct ipr_cmnd *ipr_cmd; 4814 int rc = 0; 4815 4816 scsi_cmd->scsi_done = done; 4817 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 4818 res = scsi_cmd->device->hostdata; 4819 scsi_cmd->result = (DID_OK << 16); 4820 4821 /* 4822 * We are currently blocking all devices due to a host reset 4823 * We have told the host to stop giving us new requests, but 4824 * ERP ops don't count. FIXME 4825 */ 4826 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) 4827 return SCSI_MLQUEUE_HOST_BUSY; 4828 4829 /* 4830 * FIXME - Create scsi_set_host_offline interface 4831 * and the ioa_is_dead check can be removed 4832 */ 4833 if (unlikely(ioa_cfg->ioa_is_dead || !res)) { 4834 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 4835 scsi_cmd->result = (DID_NO_CONNECT << 16); 4836 scsi_cmd->scsi_done(scsi_cmd); 4837 return 0; 4838 } 4839 4840 if (ipr_is_gata(res) && res->sata_port) 4841 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap); 4842 4843 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4844 ioarcb = &ipr_cmd->ioarcb; 4845 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 4846 4847 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 4848 ipr_cmd->scsi_cmd = scsi_cmd; 4849 ioarcb->res_handle = res->cfgte.res_handle; 4850 ipr_cmd->done = ipr_scsi_done; 4851 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 4852 4853 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 4854 if (scsi_cmd->underflow == 0) 4855 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 4856 4857 if (res->needs_sync_complete) { 4858 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 4859 res->needs_sync_complete = 0; 4860 } 4861 4862 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 4863 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 4864 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 4865 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); 4866 } 4867 4868 if (scsi_cmd->cmnd[0] >= 0xC0 && 4869 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) 4870 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4871 4872 if (likely(rc == 0)) 4873 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 4874 4875 if (likely(rc == 0)) { 4876 mb(); 4877 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 4878 ioa_cfg->regs.ioarrin_reg); 4879 } else { 4880 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4881 return SCSI_MLQUEUE_HOST_BUSY; 4882 } 4883 4884 return 0; 4885 } 4886 4887 /** 4888 * ipr_ioctl - IOCTL handler 4889 * @sdev: scsi device struct 4890 * @cmd: IOCTL cmd 4891 * @arg: IOCTL arg 4892 * 4893 * Return value: 4894 * 0 on success / other on failure 4895 **/ 4896 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) 4897 { 4898 struct ipr_resource_entry *res; 4899 4900 res = (struct ipr_resource_entry *)sdev->hostdata; 4901 if (res && ipr_is_gata(res)) 4902 return ata_scsi_ioctl(sdev, cmd, arg); 4903 4904 return -EINVAL; 4905 } 4906 4907 /** 4908 * ipr_info - Get information about the card/driver 4909 * @scsi_host: scsi host struct 4910 * 4911 * Return value: 4912 * pointer to buffer with description string 4913 **/ 4914 static const char * ipr_ioa_info(struct Scsi_Host *host) 4915 { 4916 static char buffer[512]; 4917 struct ipr_ioa_cfg *ioa_cfg; 4918 unsigned long lock_flags = 0; 4919 4920 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 4921 4922 spin_lock_irqsave(host->host_lock, lock_flags); 4923 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 4924 spin_unlock_irqrestore(host->host_lock, lock_flags); 4925 4926 return buffer; 4927 } 4928 4929 static struct scsi_host_template driver_template = { 4930 .module = THIS_MODULE, 4931 .name = "IPR", 4932 .info = ipr_ioa_info, 4933 .ioctl = ipr_ioctl, 4934 .queuecommand = ipr_queuecommand, 4935 .eh_abort_handler = ipr_eh_abort, 4936 .eh_device_reset_handler = ipr_eh_dev_reset, 4937 .eh_host_reset_handler = ipr_eh_host_reset, 4938 .slave_alloc = ipr_slave_alloc, 4939 .slave_configure = ipr_slave_configure, 4940 .slave_destroy = ipr_slave_destroy, 4941 .target_alloc = ipr_target_alloc, 4942 .target_destroy = ipr_target_destroy, 4943 .change_queue_depth = ipr_change_queue_depth, 4944 .change_queue_type = ipr_change_queue_type, 4945 .bios_param = ipr_biosparam, 4946 .can_queue = IPR_MAX_COMMANDS, 4947 .this_id = -1, 4948 .sg_tablesize = IPR_MAX_SGLIST, 4949 .max_sectors = IPR_IOA_MAX_SECTORS, 4950 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 4951 .use_clustering = ENABLE_CLUSTERING, 4952 .shost_attrs = ipr_ioa_attrs, 4953 .sdev_attrs = ipr_dev_attrs, 4954 .proc_name = IPR_NAME 4955 }; 4956 4957 /** 4958 * ipr_ata_phy_reset - libata phy_reset handler 4959 * @ap: ata port to reset 4960 * 4961 **/ 4962 static void ipr_ata_phy_reset(struct ata_port *ap) 4963 { 4964 unsigned long flags; 4965 struct ipr_sata_port *sata_port = ap->private_data; 4966 struct ipr_resource_entry *res = sata_port->res; 4967 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 4968 int rc; 4969 4970 ENTER; 4971 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4972 while(ioa_cfg->in_reset_reload) { 4973 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4974 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4975 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4976 } 4977 4978 if (!ioa_cfg->allow_cmds) 4979 goto out_unlock; 4980 4981 rc = ipr_device_reset(ioa_cfg, res); 4982 4983 if (rc) { 4984 ata_port_disable(ap); 4985 goto out_unlock; 4986 } 4987 4988 switch(res->cfgte.proto) { 4989 case IPR_PROTO_SATA: 4990 case IPR_PROTO_SAS_STP: 4991 ap->link.device[0].class = ATA_DEV_ATA; 4992 break; 4993 case IPR_PROTO_SATA_ATAPI: 4994 case IPR_PROTO_SAS_STP_ATAPI: 4995 ap->link.device[0].class = ATA_DEV_ATAPI; 4996 break; 4997 default: 4998 ap->link.device[0].class = ATA_DEV_UNKNOWN; 4999 ata_port_disable(ap); 5000 break; 5001 }; 5002 5003 out_unlock: 5004 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5005 LEAVE; 5006 } 5007 5008 /** 5009 * ipr_ata_post_internal - Cleanup after an internal command 5010 * @qc: ATA queued command 5011 * 5012 * Return value: 5013 * none 5014 **/ 5015 static void ipr_ata_post_internal(struct ata_queued_cmd *qc) 5016 { 5017 struct ipr_sata_port *sata_port = qc->ap->private_data; 5018 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5019 struct ipr_cmnd *ipr_cmd; 5020 unsigned long flags; 5021 5022 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5023 while(ioa_cfg->in_reset_reload) { 5024 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5025 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5026 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5027 } 5028 5029 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 5030 if (ipr_cmd->qc == qc) { 5031 ipr_device_reset(ioa_cfg, sata_port->res); 5032 break; 5033 } 5034 } 5035 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5036 } 5037 5038 /** 5039 * ipr_tf_read - Read the current ATA taskfile for the ATA port 5040 * @ap: ATA port 5041 * @tf: destination ATA taskfile 5042 * 5043 * Return value: 5044 * none 5045 **/ 5046 static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf) 5047 { 5048 struct ipr_sata_port *sata_port = ap->private_data; 5049 struct ipr_ioasa_gata *g = &sata_port->ioasa; 5050 5051 tf->feature = g->error; 5052 tf->nsect = g->nsect; 5053 tf->lbal = g->lbal; 5054 tf->lbam = g->lbam; 5055 tf->lbah = g->lbah; 5056 tf->device = g->device; 5057 tf->command = g->status; 5058 tf->hob_nsect = g->hob_nsect; 5059 tf->hob_lbal = g->hob_lbal; 5060 tf->hob_lbam = g->hob_lbam; 5061 tf->hob_lbah = g->hob_lbah; 5062 tf->ctl = g->alt_status; 5063 } 5064 5065 /** 5066 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure 5067 * @regs: destination 5068 * @tf: source ATA taskfile 5069 * 5070 * Return value: 5071 * none 5072 **/ 5073 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs, 5074 struct ata_taskfile *tf) 5075 { 5076 regs->feature = tf->feature; 5077 regs->nsect = tf->nsect; 5078 regs->lbal = tf->lbal; 5079 regs->lbam = tf->lbam; 5080 regs->lbah = tf->lbah; 5081 regs->device = tf->device; 5082 regs->command = tf->command; 5083 regs->hob_feature = tf->hob_feature; 5084 regs->hob_nsect = tf->hob_nsect; 5085 regs->hob_lbal = tf->hob_lbal; 5086 regs->hob_lbam = tf->hob_lbam; 5087 regs->hob_lbah = tf->hob_lbah; 5088 regs->ctl = tf->ctl; 5089 } 5090 5091 /** 5092 * ipr_sata_done - done function for SATA commands 5093 * @ipr_cmd: ipr command struct 5094 * 5095 * This function is invoked by the interrupt handler for 5096 * ops generated by the SCSI mid-layer to SATA devices 5097 * 5098 * Return value: 5099 * none 5100 **/ 5101 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd) 5102 { 5103 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5104 struct ata_queued_cmd *qc = ipr_cmd->qc; 5105 struct ipr_sata_port *sata_port = qc->ap->private_data; 5106 struct ipr_resource_entry *res = sata_port->res; 5107 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5108 5109 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata, 5110 sizeof(struct ipr_ioasa_gata)); 5111 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 5112 5113 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET) 5114 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus, 5115 res->cfgte.res_addr.target); 5116 5117 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 5118 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status); 5119 else 5120 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status); 5121 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5122 ata_qc_complete(qc); 5123 } 5124 5125 /** 5126 * ipr_build_ata_ioadl - Build an ATA scatter/gather list 5127 * @ipr_cmd: ipr command struct 5128 * @qc: ATA queued command 5129 * 5130 **/ 5131 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, 5132 struct ata_queued_cmd *qc) 5133 { 5134 u32 ioadl_flags = 0; 5135 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5136 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5137 int len = qc->nbytes + qc->pad_len; 5138 struct scatterlist *sg; 5139 5140 if (len == 0) 5141 return; 5142 5143 if (qc->dma_dir == DMA_TO_DEVICE) { 5144 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5145 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5146 ioarcb->write_data_transfer_length = cpu_to_be32(len); 5147 ioarcb->write_ioadl_len = 5148 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5149 } else if (qc->dma_dir == DMA_FROM_DEVICE) { 5150 ioadl_flags = IPR_IOADL_FLAGS_READ; 5151 ioarcb->read_data_transfer_length = cpu_to_be32(len); 5152 ioarcb->read_ioadl_len = 5153 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5154 } 5155 5156 ata_for_each_sg(sg, qc) { 5157 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 5158 ioadl->address = cpu_to_be32(sg_dma_address(sg)); 5159 if (ata_sg_is_last(sg, qc)) 5160 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5161 else 5162 ioadl++; 5163 } 5164 } 5165 5166 /** 5167 * ipr_qc_issue - Issue a SATA qc to a device 5168 * @qc: queued command 5169 * 5170 * Return value: 5171 * 0 if success 5172 **/ 5173 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) 5174 { 5175 struct ata_port *ap = qc->ap; 5176 struct ipr_sata_port *sata_port = ap->private_data; 5177 struct ipr_resource_entry *res = sata_port->res; 5178 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5179 struct ipr_cmnd *ipr_cmd; 5180 struct ipr_ioarcb *ioarcb; 5181 struct ipr_ioarcb_ata_regs *regs; 5182 5183 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead)) 5184 return AC_ERR_SYSTEM; 5185 5186 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5187 ioarcb = &ipr_cmd->ioarcb; 5188 regs = &ioarcb->add_data.u.regs; 5189 5190 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data)); 5191 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs)); 5192 5193 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 5194 ipr_cmd->qc = qc; 5195 ipr_cmd->done = ipr_sata_done; 5196 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 5197 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU; 5198 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 5199 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 5200 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem; 5201 5202 ipr_build_ata_ioadl(ipr_cmd, qc); 5203 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 5204 ipr_copy_sata_tf(regs, &qc->tf); 5205 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN); 5206 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 5207 5208 switch (qc->tf.protocol) { 5209 case ATA_PROT_NODATA: 5210 case ATA_PROT_PIO: 5211 break; 5212 5213 case ATA_PROT_DMA: 5214 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 5215 break; 5216 5217 case ATA_PROT_ATAPI: 5218 case ATA_PROT_ATAPI_NODATA: 5219 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 5220 break; 5221 5222 case ATA_PROT_ATAPI_DMA: 5223 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 5224 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 5225 break; 5226 5227 default: 5228 WARN_ON(1); 5229 return AC_ERR_INVALID; 5230 } 5231 5232 mb(); 5233 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr), 5234 ioa_cfg->regs.ioarrin_reg); 5235 return 0; 5236 } 5237 5238 /** 5239 * ipr_ata_check_status - Return last ATA status 5240 * @ap: ATA port 5241 * 5242 * Return value: 5243 * ATA status 5244 **/ 5245 static u8 ipr_ata_check_status(struct ata_port *ap) 5246 { 5247 struct ipr_sata_port *sata_port = ap->private_data; 5248 return sata_port->ioasa.status; 5249 } 5250 5251 /** 5252 * ipr_ata_check_altstatus - Return last ATA altstatus 5253 * @ap: ATA port 5254 * 5255 * Return value: 5256 * Alt ATA status 5257 **/ 5258 static u8 ipr_ata_check_altstatus(struct ata_port *ap) 5259 { 5260 struct ipr_sata_port *sata_port = ap->private_data; 5261 return sata_port->ioasa.alt_status; 5262 } 5263 5264 static struct ata_port_operations ipr_sata_ops = { 5265 .check_status = ipr_ata_check_status, 5266 .check_altstatus = ipr_ata_check_altstatus, 5267 .dev_select = ata_noop_dev_select, 5268 .phy_reset = ipr_ata_phy_reset, 5269 .post_internal_cmd = ipr_ata_post_internal, 5270 .tf_read = ipr_tf_read, 5271 .qc_prep = ata_noop_qc_prep, 5272 .qc_issue = ipr_qc_issue, 5273 .port_start = ata_sas_port_start, 5274 .port_stop = ata_sas_port_stop 5275 }; 5276 5277 static struct ata_port_info sata_port_info = { 5278 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET | 5279 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA, 5280 .pio_mask = 0x10, /* pio4 */ 5281 .mwdma_mask = 0x07, 5282 .udma_mask = 0x7f, /* udma0-6 */ 5283 .port_ops = &ipr_sata_ops 5284 }; 5285 5286 #ifdef CONFIG_PPC_PSERIES 5287 static const u16 ipr_blocked_processors[] = { 5288 PV_NORTHSTAR, 5289 PV_PULSAR, 5290 PV_POWER4, 5291 PV_ICESTAR, 5292 PV_SSTAR, 5293 PV_POWER4p, 5294 PV_630, 5295 PV_630p 5296 }; 5297 5298 /** 5299 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 5300 * @ioa_cfg: ioa cfg struct 5301 * 5302 * Adapters that use Gemstone revision < 3.1 do not work reliably on 5303 * certain pSeries hardware. This function determines if the given 5304 * adapter is in one of these confgurations or not. 5305 * 5306 * Return value: 5307 * 1 if adapter is not supported / 0 if adapter is supported 5308 **/ 5309 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 5310 { 5311 int i; 5312 5313 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) { 5314 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ 5315 if (__is_processor(ipr_blocked_processors[i])) 5316 return 1; 5317 } 5318 } 5319 return 0; 5320 } 5321 #else 5322 #define ipr_invalid_adapter(ioa_cfg) 0 5323 #endif 5324 5325 /** 5326 * ipr_ioa_bringdown_done - IOA bring down completion. 5327 * @ipr_cmd: ipr command struct 5328 * 5329 * This function processes the completion of an adapter bring down. 5330 * It wakes any reset sleepers. 5331 * 5332 * Return value: 5333 * IPR_RC_JOB_RETURN 5334 **/ 5335 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 5336 { 5337 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5338 5339 ENTER; 5340 ioa_cfg->in_reset_reload = 0; 5341 ioa_cfg->reset_retries = 0; 5342 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5343 wake_up_all(&ioa_cfg->reset_wait_q); 5344 5345 spin_unlock_irq(ioa_cfg->host->host_lock); 5346 scsi_unblock_requests(ioa_cfg->host); 5347 spin_lock_irq(ioa_cfg->host->host_lock); 5348 LEAVE; 5349 5350 return IPR_RC_JOB_RETURN; 5351 } 5352 5353 /** 5354 * ipr_ioa_reset_done - IOA reset completion. 5355 * @ipr_cmd: ipr command struct 5356 * 5357 * This function processes the completion of an adapter reset. 5358 * It schedules any necessary mid-layer add/removes and 5359 * wakes any reset sleepers. 5360 * 5361 * Return value: 5362 * IPR_RC_JOB_RETURN 5363 **/ 5364 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 5365 { 5366 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5367 struct ipr_resource_entry *res; 5368 struct ipr_hostrcb *hostrcb, *temp; 5369 int i = 0; 5370 5371 ENTER; 5372 ioa_cfg->in_reset_reload = 0; 5373 ioa_cfg->allow_cmds = 1; 5374 ioa_cfg->reset_cmd = NULL; 5375 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 5376 5377 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 5378 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { 5379 ipr_trace; 5380 break; 5381 } 5382 } 5383 schedule_work(&ioa_cfg->work_q); 5384 5385 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { 5386 list_del(&hostrcb->queue); 5387 if (i++ < IPR_NUM_LOG_HCAMS) 5388 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 5389 else 5390 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 5391 } 5392 5393 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS); 5394 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 5395 5396 ioa_cfg->reset_retries = 0; 5397 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5398 wake_up_all(&ioa_cfg->reset_wait_q); 5399 5400 spin_unlock_irq(ioa_cfg->host->host_lock); 5401 scsi_unblock_requests(ioa_cfg->host); 5402 spin_lock_irq(ioa_cfg->host->host_lock); 5403 5404 if (!ioa_cfg->allow_cmds) 5405 scsi_block_requests(ioa_cfg->host); 5406 5407 LEAVE; 5408 return IPR_RC_JOB_RETURN; 5409 } 5410 5411 /** 5412 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 5413 * @supported_dev: supported device struct 5414 * @vpids: vendor product id struct 5415 * 5416 * Return value: 5417 * none 5418 **/ 5419 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 5420 struct ipr_std_inq_vpids *vpids) 5421 { 5422 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 5423 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 5424 supported_dev->num_records = 1; 5425 supported_dev->data_length = 5426 cpu_to_be16(sizeof(struct ipr_supported_device)); 5427 supported_dev->reserved = 0; 5428 } 5429 5430 /** 5431 * ipr_set_supported_devs - Send Set Supported Devices for a device 5432 * @ipr_cmd: ipr command struct 5433 * 5434 * This function send a Set Supported Devices to the adapter 5435 * 5436 * Return value: 5437 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5438 **/ 5439 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 5440 { 5441 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5442 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 5443 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5444 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5445 struct ipr_resource_entry *res = ipr_cmd->u.res; 5446 5447 ipr_cmd->job_step = ipr_ioa_reset_done; 5448 5449 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 5450 if (!ipr_is_scsi_disk(res)) 5451 continue; 5452 5453 ipr_cmd->u.res = res; 5454 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids); 5455 5456 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5457 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5458 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5459 5460 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 5461 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 5462 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 5463 5464 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | 5465 sizeof(struct ipr_supported_device)); 5466 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma + 5467 offsetof(struct ipr_misc_cbs, supp_dev)); 5468 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5469 ioarcb->write_data_transfer_length = 5470 cpu_to_be32(sizeof(struct ipr_supported_device)); 5471 5472 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 5473 IPR_SET_SUP_DEVICE_TIMEOUT); 5474 5475 ipr_cmd->job_step = ipr_set_supported_devs; 5476 return IPR_RC_JOB_RETURN; 5477 } 5478 5479 return IPR_RC_JOB_CONTINUE; 5480 } 5481 5482 /** 5483 * ipr_setup_write_cache - Disable write cache if needed 5484 * @ipr_cmd: ipr command struct 5485 * 5486 * This function sets up adapters write cache to desired setting 5487 * 5488 * Return value: 5489 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5490 **/ 5491 static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd) 5492 { 5493 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5494 5495 ipr_cmd->job_step = ipr_set_supported_devs; 5496 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 5497 struct ipr_resource_entry, queue); 5498 5499 if (ioa_cfg->cache_state != CACHE_DISABLED) 5500 return IPR_RC_JOB_CONTINUE; 5501 5502 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5503 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5504 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 5505 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 5506 5507 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5508 5509 return IPR_RC_JOB_RETURN; 5510 } 5511 5512 /** 5513 * ipr_get_mode_page - Locate specified mode page 5514 * @mode_pages: mode page buffer 5515 * @page_code: page code to find 5516 * @len: minimum required length for mode page 5517 * 5518 * Return value: 5519 * pointer to mode page / NULL on failure 5520 **/ 5521 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 5522 u32 page_code, u32 len) 5523 { 5524 struct ipr_mode_page_hdr *mode_hdr; 5525 u32 page_length; 5526 u32 length; 5527 5528 if (!mode_pages || (mode_pages->hdr.length == 0)) 5529 return NULL; 5530 5531 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 5532 mode_hdr = (struct ipr_mode_page_hdr *) 5533 (mode_pages->data + mode_pages->hdr.block_desc_len); 5534 5535 while (length) { 5536 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 5537 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 5538 return mode_hdr; 5539 break; 5540 } else { 5541 page_length = (sizeof(struct ipr_mode_page_hdr) + 5542 mode_hdr->page_length); 5543 length -= page_length; 5544 mode_hdr = (struct ipr_mode_page_hdr *) 5545 ((unsigned long)mode_hdr + page_length); 5546 } 5547 } 5548 return NULL; 5549 } 5550 5551 /** 5552 * ipr_check_term_power - Check for term power errors 5553 * @ioa_cfg: ioa config struct 5554 * @mode_pages: IOAFP mode pages buffer 5555 * 5556 * Check the IOAFP's mode page 28 for term power errors 5557 * 5558 * Return value: 5559 * nothing 5560 **/ 5561 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 5562 struct ipr_mode_pages *mode_pages) 5563 { 5564 int i; 5565 int entry_length; 5566 struct ipr_dev_bus_entry *bus; 5567 struct ipr_mode_page28 *mode_page; 5568 5569 mode_page = ipr_get_mode_page(mode_pages, 0x28, 5570 sizeof(struct ipr_mode_page28)); 5571 5572 entry_length = mode_page->entry_length; 5573 5574 bus = mode_page->bus; 5575 5576 for (i = 0; i < mode_page->num_entries; i++) { 5577 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 5578 dev_err(&ioa_cfg->pdev->dev, 5579 "Term power is absent on scsi bus %d\n", 5580 bus->res_addr.bus); 5581 } 5582 5583 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 5584 } 5585 } 5586 5587 /** 5588 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 5589 * @ioa_cfg: ioa config struct 5590 * 5591 * Looks through the config table checking for SES devices. If 5592 * the SES device is in the SES table indicating a maximum SCSI 5593 * bus speed, the speed is limited for the bus. 5594 * 5595 * Return value: 5596 * none 5597 **/ 5598 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 5599 { 5600 u32 max_xfer_rate; 5601 int i; 5602 5603 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 5604 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 5605 ioa_cfg->bus_attr[i].bus_width); 5606 5607 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 5608 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 5609 } 5610 } 5611 5612 /** 5613 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 5614 * @ioa_cfg: ioa config struct 5615 * @mode_pages: mode page 28 buffer 5616 * 5617 * Updates mode page 28 based on driver configuration 5618 * 5619 * Return value: 5620 * none 5621 **/ 5622 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 5623 struct ipr_mode_pages *mode_pages) 5624 { 5625 int i, entry_length; 5626 struct ipr_dev_bus_entry *bus; 5627 struct ipr_bus_attributes *bus_attr; 5628 struct ipr_mode_page28 *mode_page; 5629 5630 mode_page = ipr_get_mode_page(mode_pages, 0x28, 5631 sizeof(struct ipr_mode_page28)); 5632 5633 entry_length = mode_page->entry_length; 5634 5635 /* Loop for each device bus entry */ 5636 for (i = 0, bus = mode_page->bus; 5637 i < mode_page->num_entries; 5638 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 5639 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 5640 dev_err(&ioa_cfg->pdev->dev, 5641 "Invalid resource address reported: 0x%08X\n", 5642 IPR_GET_PHYS_LOC(bus->res_addr)); 5643 continue; 5644 } 5645 5646 bus_attr = &ioa_cfg->bus_attr[i]; 5647 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 5648 bus->bus_width = bus_attr->bus_width; 5649 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 5650 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 5651 if (bus_attr->qas_enabled) 5652 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 5653 else 5654 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 5655 } 5656 } 5657 5658 /** 5659 * ipr_build_mode_select - Build a mode select command 5660 * @ipr_cmd: ipr command struct 5661 * @res_handle: resource handle to send command to 5662 * @parm: Byte 2 of Mode Sense command 5663 * @dma_addr: DMA buffer address 5664 * @xfer_len: data transfer length 5665 * 5666 * Return value: 5667 * none 5668 **/ 5669 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 5670 __be32 res_handle, u8 parm, u32 dma_addr, 5671 u8 xfer_len) 5672 { 5673 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5674 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5675 5676 ioarcb->res_handle = res_handle; 5677 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5678 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5679 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 5680 ioarcb->cmd_pkt.cdb[1] = parm; 5681 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5682 5683 ioadl->flags_and_data_len = 5684 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len); 5685 ioadl->address = cpu_to_be32(dma_addr); 5686 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5687 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len); 5688 } 5689 5690 /** 5691 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 5692 * @ipr_cmd: ipr command struct 5693 * 5694 * This function sets up the SCSI bus attributes and sends 5695 * a Mode Select for Page 28 to activate them. 5696 * 5697 * Return value: 5698 * IPR_RC_JOB_RETURN 5699 **/ 5700 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 5701 { 5702 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5703 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 5704 int length; 5705 5706 ENTER; 5707 ipr_scsi_bus_speed_limit(ioa_cfg); 5708 ipr_check_term_power(ioa_cfg, mode_pages); 5709 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 5710 length = mode_pages->hdr.length + 1; 5711 mode_pages->hdr.length = 0; 5712 5713 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 5714 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 5715 length); 5716 5717 ipr_cmd->job_step = ipr_setup_write_cache; 5718 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5719 5720 LEAVE; 5721 return IPR_RC_JOB_RETURN; 5722 } 5723 5724 /** 5725 * ipr_build_mode_sense - Builds a mode sense command 5726 * @ipr_cmd: ipr command struct 5727 * @res: resource entry struct 5728 * @parm: Byte 2 of mode sense command 5729 * @dma_addr: DMA address of mode sense buffer 5730 * @xfer_len: Size of DMA buffer 5731 * 5732 * Return value: 5733 * none 5734 **/ 5735 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 5736 __be32 res_handle, 5737 u8 parm, u32 dma_addr, u8 xfer_len) 5738 { 5739 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5740 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5741 5742 ioarcb->res_handle = res_handle; 5743 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 5744 ioarcb->cmd_pkt.cdb[2] = parm; 5745 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5746 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5747 5748 ioadl->flags_and_data_len = 5749 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 5750 ioadl->address = cpu_to_be32(dma_addr); 5751 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5752 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 5753 } 5754 5755 /** 5756 * ipr_reset_cmd_failed - Handle failure of IOA reset command 5757 * @ipr_cmd: ipr command struct 5758 * 5759 * This function handles the failure of an IOA bringup command. 5760 * 5761 * Return value: 5762 * IPR_RC_JOB_RETURN 5763 **/ 5764 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 5765 { 5766 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5767 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5768 5769 dev_err(&ioa_cfg->pdev->dev, 5770 "0x%02X failed with IOASC: 0x%08X\n", 5771 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 5772 5773 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5774 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5775 return IPR_RC_JOB_RETURN; 5776 } 5777 5778 /** 5779 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 5780 * @ipr_cmd: ipr command struct 5781 * 5782 * This function handles the failure of a Mode Sense to the IOAFP. 5783 * Some adapters do not handle all mode pages. 5784 * 5785 * Return value: 5786 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5787 **/ 5788 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 5789 { 5790 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5791 5792 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 5793 ipr_cmd->job_step = ipr_setup_write_cache; 5794 return IPR_RC_JOB_CONTINUE; 5795 } 5796 5797 return ipr_reset_cmd_failed(ipr_cmd); 5798 } 5799 5800 /** 5801 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 5802 * @ipr_cmd: ipr command struct 5803 * 5804 * This function send a Page 28 mode sense to the IOA to 5805 * retrieve SCSI bus attributes. 5806 * 5807 * Return value: 5808 * IPR_RC_JOB_RETURN 5809 **/ 5810 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 5811 { 5812 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5813 5814 ENTER; 5815 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 5816 0x28, ioa_cfg->vpd_cbs_dma + 5817 offsetof(struct ipr_misc_cbs, mode_pages), 5818 sizeof(struct ipr_mode_pages)); 5819 5820 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 5821 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 5822 5823 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5824 5825 LEAVE; 5826 return IPR_RC_JOB_RETURN; 5827 } 5828 5829 /** 5830 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA 5831 * @ipr_cmd: ipr command struct 5832 * 5833 * This function enables dual IOA RAID support if possible. 5834 * 5835 * Return value: 5836 * IPR_RC_JOB_RETURN 5837 **/ 5838 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd) 5839 { 5840 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5841 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 5842 struct ipr_mode_page24 *mode_page; 5843 int length; 5844 5845 ENTER; 5846 mode_page = ipr_get_mode_page(mode_pages, 0x24, 5847 sizeof(struct ipr_mode_page24)); 5848 5849 if (mode_page) 5850 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF; 5851 5852 length = mode_pages->hdr.length + 1; 5853 mode_pages->hdr.length = 0; 5854 5855 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 5856 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 5857 length); 5858 5859 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 5860 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5861 5862 LEAVE; 5863 return IPR_RC_JOB_RETURN; 5864 } 5865 5866 /** 5867 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense 5868 * @ipr_cmd: ipr command struct 5869 * 5870 * This function handles the failure of a Mode Sense to the IOAFP. 5871 * Some adapters do not handle all mode pages. 5872 * 5873 * Return value: 5874 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5875 **/ 5876 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd) 5877 { 5878 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5879 5880 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 5881 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 5882 return IPR_RC_JOB_CONTINUE; 5883 } 5884 5885 return ipr_reset_cmd_failed(ipr_cmd); 5886 } 5887 5888 /** 5889 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA 5890 * @ipr_cmd: ipr command struct 5891 * 5892 * This function send a mode sense to the IOA to retrieve 5893 * the IOA Advanced Function Control mode page. 5894 * 5895 * Return value: 5896 * IPR_RC_JOB_RETURN 5897 **/ 5898 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd) 5899 { 5900 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5901 5902 ENTER; 5903 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 5904 0x24, ioa_cfg->vpd_cbs_dma + 5905 offsetof(struct ipr_misc_cbs, mode_pages), 5906 sizeof(struct ipr_mode_pages)); 5907 5908 ipr_cmd->job_step = ipr_ioafp_mode_select_page24; 5909 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed; 5910 5911 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5912 5913 LEAVE; 5914 return IPR_RC_JOB_RETURN; 5915 } 5916 5917 /** 5918 * ipr_init_res_table - Initialize the resource table 5919 * @ipr_cmd: ipr command struct 5920 * 5921 * This function looks through the existing resource table, comparing 5922 * it with the config table. This function will take care of old/new 5923 * devices and schedule adding/removing them from the mid-layer 5924 * as appropriate. 5925 * 5926 * Return value: 5927 * IPR_RC_JOB_CONTINUE 5928 **/ 5929 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 5930 { 5931 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5932 struct ipr_resource_entry *res, *temp; 5933 struct ipr_config_table_entry *cfgte; 5934 int found, i; 5935 LIST_HEAD(old_res); 5936 5937 ENTER; 5938 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ) 5939 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 5940 5941 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 5942 list_move_tail(&res->queue, &old_res); 5943 5944 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) { 5945 cfgte = &ioa_cfg->cfg_table->dev[i]; 5946 found = 0; 5947 5948 list_for_each_entry_safe(res, temp, &old_res, queue) { 5949 if (!memcmp(&res->cfgte.res_addr, 5950 &cfgte->res_addr, sizeof(cfgte->res_addr))) { 5951 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5952 found = 1; 5953 break; 5954 } 5955 } 5956 5957 if (!found) { 5958 if (list_empty(&ioa_cfg->free_res_q)) { 5959 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 5960 break; 5961 } 5962 5963 found = 1; 5964 res = list_entry(ioa_cfg->free_res_q.next, 5965 struct ipr_resource_entry, queue); 5966 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5967 ipr_init_res_entry(res); 5968 res->add_to_ml = 1; 5969 } 5970 5971 if (found) 5972 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 5973 } 5974 5975 list_for_each_entry_safe(res, temp, &old_res, queue) { 5976 if (res->sdev) { 5977 res->del_from_ml = 1; 5978 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE; 5979 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5980 } else { 5981 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 5982 } 5983 } 5984 5985 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 5986 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24; 5987 else 5988 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 5989 5990 LEAVE; 5991 return IPR_RC_JOB_CONTINUE; 5992 } 5993 5994 /** 5995 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 5996 * @ipr_cmd: ipr command struct 5997 * 5998 * This function sends a Query IOA Configuration command 5999 * to the adapter to retrieve the IOA configuration table. 6000 * 6001 * Return value: 6002 * IPR_RC_JOB_RETURN 6003 **/ 6004 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 6005 { 6006 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6007 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6008 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 6009 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 6010 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 6011 6012 ENTER; 6013 if (cap->cap & IPR_CAP_DUAL_IOA_RAID) 6014 ioa_cfg->dual_raid = 1; 6015 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 6016 ucode_vpd->major_release, ucode_vpd->card_type, 6017 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 6018 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6019 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6020 6021 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 6022 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff; 6023 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff; 6024 6025 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 6026 ioarcb->read_data_transfer_length = 6027 cpu_to_be32(sizeof(struct ipr_config_table)); 6028 6029 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma); 6030 ioadl->flags_and_data_len = 6031 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table)); 6032 6033 ipr_cmd->job_step = ipr_init_res_table; 6034 6035 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6036 6037 LEAVE; 6038 return IPR_RC_JOB_RETURN; 6039 } 6040 6041 /** 6042 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 6043 * @ipr_cmd: ipr command struct 6044 * 6045 * This utility function sends an inquiry to the adapter. 6046 * 6047 * Return value: 6048 * none 6049 **/ 6050 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 6051 u32 dma_addr, u8 xfer_len) 6052 { 6053 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6054 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 6055 6056 ENTER; 6057 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6058 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6059 6060 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 6061 ioarcb->cmd_pkt.cdb[1] = flags; 6062 ioarcb->cmd_pkt.cdb[2] = page; 6063 ioarcb->cmd_pkt.cdb[4] = xfer_len; 6064 6065 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 6066 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 6067 6068 ioadl->address = cpu_to_be32(dma_addr); 6069 ioadl->flags_and_data_len = 6070 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 6071 6072 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6073 LEAVE; 6074 } 6075 6076 /** 6077 * ipr_inquiry_page_supported - Is the given inquiry page supported 6078 * @page0: inquiry page 0 buffer 6079 * @page: page code. 6080 * 6081 * This function determines if the specified inquiry page is supported. 6082 * 6083 * Return value: 6084 * 1 if page is supported / 0 if not 6085 **/ 6086 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 6087 { 6088 int i; 6089 6090 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 6091 if (page0->page[i] == page) 6092 return 1; 6093 6094 return 0; 6095 } 6096 6097 /** 6098 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter. 6099 * @ipr_cmd: ipr command struct 6100 * 6101 * This function sends a Page 0xD0 inquiry to the adapter 6102 * to retrieve adapter capabilities. 6103 * 6104 * Return value: 6105 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6106 **/ 6107 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd) 6108 { 6109 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6110 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 6111 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 6112 6113 ENTER; 6114 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 6115 memset(cap, 0, sizeof(*cap)); 6116 6117 if (ipr_inquiry_page_supported(page0, 0xD0)) { 6118 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0, 6119 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap), 6120 sizeof(struct ipr_inquiry_cap)); 6121 return IPR_RC_JOB_RETURN; 6122 } 6123 6124 LEAVE; 6125 return IPR_RC_JOB_CONTINUE; 6126 } 6127 6128 /** 6129 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 6130 * @ipr_cmd: ipr command struct 6131 * 6132 * This function sends a Page 3 inquiry to the adapter 6133 * to retrieve software VPD information. 6134 * 6135 * Return value: 6136 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6137 **/ 6138 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 6139 { 6140 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6141 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 6142 6143 ENTER; 6144 6145 if (!ipr_inquiry_page_supported(page0, 1)) 6146 ioa_cfg->cache_state = CACHE_NONE; 6147 6148 ipr_cmd->job_step = ipr_ioafp_cap_inquiry; 6149 6150 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 6151 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 6152 sizeof(struct ipr_inquiry_page3)); 6153 6154 LEAVE; 6155 return IPR_RC_JOB_RETURN; 6156 } 6157 6158 /** 6159 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 6160 * @ipr_cmd: ipr command struct 6161 * 6162 * This function sends a Page 0 inquiry to the adapter 6163 * to retrieve supported inquiry pages. 6164 * 6165 * Return value: 6166 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6167 **/ 6168 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 6169 { 6170 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6171 char type[5]; 6172 6173 ENTER; 6174 6175 /* Grab the type out of the VPD and store it away */ 6176 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 6177 type[4] = '\0'; 6178 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 6179 6180 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 6181 6182 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 6183 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 6184 sizeof(struct ipr_inquiry_page0)); 6185 6186 LEAVE; 6187 return IPR_RC_JOB_RETURN; 6188 } 6189 6190 /** 6191 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 6192 * @ipr_cmd: ipr command struct 6193 * 6194 * This function sends a standard inquiry to the adapter. 6195 * 6196 * Return value: 6197 * IPR_RC_JOB_RETURN 6198 **/ 6199 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 6200 { 6201 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6202 6203 ENTER; 6204 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 6205 6206 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 6207 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 6208 sizeof(struct ipr_ioa_vpd)); 6209 6210 LEAVE; 6211 return IPR_RC_JOB_RETURN; 6212 } 6213 6214 /** 6215 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ. 6216 * @ipr_cmd: ipr command struct 6217 * 6218 * This function send an Identify Host Request Response Queue 6219 * command to establish the HRRQ with the adapter. 6220 * 6221 * Return value: 6222 * IPR_RC_JOB_RETURN 6223 **/ 6224 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd) 6225 { 6226 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6227 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6228 6229 ENTER; 6230 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 6231 6232 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 6233 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6234 6235 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6236 ioarcb->cmd_pkt.cdb[2] = 6237 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff; 6238 ioarcb->cmd_pkt.cdb[3] = 6239 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff; 6240 ioarcb->cmd_pkt.cdb[4] = 6241 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff; 6242 ioarcb->cmd_pkt.cdb[5] = 6243 ((u32) ioa_cfg->host_rrq_dma) & 0xff; 6244 ioarcb->cmd_pkt.cdb[7] = 6245 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; 6246 ioarcb->cmd_pkt.cdb[8] = 6247 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; 6248 6249 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 6250 6251 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6252 6253 LEAVE; 6254 return IPR_RC_JOB_RETURN; 6255 } 6256 6257 /** 6258 * ipr_reset_timer_done - Adapter reset timer function 6259 * @ipr_cmd: ipr command struct 6260 * 6261 * Description: This function is used in adapter reset processing 6262 * for timing events. If the reset_cmd pointer in the IOA 6263 * config struct is not this adapter's we are doing nested 6264 * resets and fail_all_ops will take care of freeing the 6265 * command block. 6266 * 6267 * Return value: 6268 * none 6269 **/ 6270 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 6271 { 6272 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6273 unsigned long lock_flags = 0; 6274 6275 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6276 6277 if (ioa_cfg->reset_cmd == ipr_cmd) { 6278 list_del(&ipr_cmd->queue); 6279 ipr_cmd->done(ipr_cmd); 6280 } 6281 6282 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6283 } 6284 6285 /** 6286 * ipr_reset_start_timer - Start a timer for adapter reset job 6287 * @ipr_cmd: ipr command struct 6288 * @timeout: timeout value 6289 * 6290 * Description: This function is used in adapter reset processing 6291 * for timing events. If the reset_cmd pointer in the IOA 6292 * config struct is not this adapter's we are doing nested 6293 * resets and fail_all_ops will take care of freeing the 6294 * command block. 6295 * 6296 * Return value: 6297 * none 6298 **/ 6299 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 6300 unsigned long timeout) 6301 { 6302 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 6303 ipr_cmd->done = ipr_reset_ioa_job; 6304 6305 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 6306 ipr_cmd->timer.expires = jiffies + timeout; 6307 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 6308 add_timer(&ipr_cmd->timer); 6309 } 6310 6311 /** 6312 * ipr_init_ioa_mem - Initialize ioa_cfg control block 6313 * @ioa_cfg: ioa cfg struct 6314 * 6315 * Return value: 6316 * nothing 6317 **/ 6318 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 6319 { 6320 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); 6321 6322 /* Initialize Host RRQ pointers */ 6323 ioa_cfg->hrrq_start = ioa_cfg->host_rrq; 6324 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; 6325 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 6326 ioa_cfg->toggle_bit = 1; 6327 6328 /* Zero out config table */ 6329 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table)); 6330 } 6331 6332 /** 6333 * ipr_reset_enable_ioa - Enable the IOA following a reset. 6334 * @ipr_cmd: ipr command struct 6335 * 6336 * This function reinitializes some control blocks and 6337 * enables destructive diagnostics on the adapter. 6338 * 6339 * Return value: 6340 * IPR_RC_JOB_RETURN 6341 **/ 6342 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 6343 { 6344 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6345 volatile u32 int_reg; 6346 6347 ENTER; 6348 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq; 6349 ipr_init_ioa_mem(ioa_cfg); 6350 6351 ioa_cfg->allow_interrupts = 1; 6352 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 6353 6354 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 6355 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 6356 ioa_cfg->regs.clr_interrupt_mask_reg); 6357 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 6358 return IPR_RC_JOB_CONTINUE; 6359 } 6360 6361 /* Enable destructive diagnostics on IOA */ 6362 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg); 6363 6364 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg); 6365 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 6366 6367 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 6368 6369 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 6370 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ); 6371 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 6372 ipr_cmd->done = ipr_reset_ioa_job; 6373 add_timer(&ipr_cmd->timer); 6374 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 6375 6376 LEAVE; 6377 return IPR_RC_JOB_RETURN; 6378 } 6379 6380 /** 6381 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 6382 * @ipr_cmd: ipr command struct 6383 * 6384 * This function is invoked when an adapter dump has run out 6385 * of processing time. 6386 * 6387 * Return value: 6388 * IPR_RC_JOB_CONTINUE 6389 **/ 6390 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 6391 { 6392 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6393 6394 if (ioa_cfg->sdt_state == GET_DUMP) 6395 ioa_cfg->sdt_state = ABORT_DUMP; 6396 6397 ipr_cmd->job_step = ipr_reset_alert; 6398 6399 return IPR_RC_JOB_CONTINUE; 6400 } 6401 6402 /** 6403 * ipr_unit_check_no_data - Log a unit check/no data error log 6404 * @ioa_cfg: ioa config struct 6405 * 6406 * Logs an error indicating the adapter unit checked, but for some 6407 * reason, we were unable to fetch the unit check buffer. 6408 * 6409 * Return value: 6410 * nothing 6411 **/ 6412 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 6413 { 6414 ioa_cfg->errors_logged++; 6415 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 6416 } 6417 6418 /** 6419 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 6420 * @ioa_cfg: ioa config struct 6421 * 6422 * Fetches the unit check buffer from the adapter by clocking the data 6423 * through the mailbox register. 6424 * 6425 * Return value: 6426 * nothing 6427 **/ 6428 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 6429 { 6430 unsigned long mailbox; 6431 struct ipr_hostrcb *hostrcb; 6432 struct ipr_uc_sdt sdt; 6433 int rc, length; 6434 u32 ioasc; 6435 6436 mailbox = readl(ioa_cfg->ioa_mailbox); 6437 6438 if (!ipr_sdt_is_fmt2(mailbox)) { 6439 ipr_unit_check_no_data(ioa_cfg); 6440 return; 6441 } 6442 6443 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 6444 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 6445 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 6446 6447 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) || 6448 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) { 6449 ipr_unit_check_no_data(ioa_cfg); 6450 return; 6451 } 6452 6453 /* Find length of the first sdt entry (UC buffer) */ 6454 length = (be32_to_cpu(sdt.entry[0].end_offset) - 6455 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK; 6456 6457 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 6458 struct ipr_hostrcb, queue); 6459 list_del(&hostrcb->queue); 6460 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 6461 6462 rc = ipr_get_ldump_data_section(ioa_cfg, 6463 be32_to_cpu(sdt.entry[0].bar_str_offset), 6464 (__be32 *)&hostrcb->hcam, 6465 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 6466 6467 if (!rc) { 6468 ipr_handle_log_data(ioa_cfg, hostrcb); 6469 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc); 6470 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED && 6471 ioa_cfg->sdt_state == GET_DUMP) 6472 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 6473 } else 6474 ipr_unit_check_no_data(ioa_cfg); 6475 6476 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 6477 } 6478 6479 /** 6480 * ipr_reset_restore_cfg_space - Restore PCI config space. 6481 * @ipr_cmd: ipr command struct 6482 * 6483 * Description: This function restores the saved PCI config space of 6484 * the adapter, fails all outstanding ops back to the callers, and 6485 * fetches the dump/unit check if applicable to this reset. 6486 * 6487 * Return value: 6488 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6489 **/ 6490 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 6491 { 6492 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6493 int rc; 6494 6495 ENTER; 6496 rc = pci_restore_state(ioa_cfg->pdev); 6497 6498 if (rc != PCIBIOS_SUCCESSFUL) { 6499 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6500 return IPR_RC_JOB_CONTINUE; 6501 } 6502 6503 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 6504 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6505 return IPR_RC_JOB_CONTINUE; 6506 } 6507 6508 ipr_fail_all_ops(ioa_cfg); 6509 6510 if (ioa_cfg->ioa_unit_checked) { 6511 ioa_cfg->ioa_unit_checked = 0; 6512 ipr_get_unit_check_buffer(ioa_cfg); 6513 ipr_cmd->job_step = ipr_reset_alert; 6514 ipr_reset_start_timer(ipr_cmd, 0); 6515 return IPR_RC_JOB_RETURN; 6516 } 6517 6518 if (ioa_cfg->in_ioa_bringdown) { 6519 ipr_cmd->job_step = ipr_ioa_bringdown_done; 6520 } else { 6521 ipr_cmd->job_step = ipr_reset_enable_ioa; 6522 6523 if (GET_DUMP == ioa_cfg->sdt_state) { 6524 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); 6525 ipr_cmd->job_step = ipr_reset_wait_for_dump; 6526 schedule_work(&ioa_cfg->work_q); 6527 return IPR_RC_JOB_RETURN; 6528 } 6529 } 6530 6531 ENTER; 6532 return IPR_RC_JOB_CONTINUE; 6533 } 6534 6535 /** 6536 * ipr_reset_bist_done - BIST has completed on the adapter. 6537 * @ipr_cmd: ipr command struct 6538 * 6539 * Description: Unblock config space and resume the reset process. 6540 * 6541 * Return value: 6542 * IPR_RC_JOB_CONTINUE 6543 **/ 6544 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd) 6545 { 6546 ENTER; 6547 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 6548 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 6549 LEAVE; 6550 return IPR_RC_JOB_CONTINUE; 6551 } 6552 6553 /** 6554 * ipr_reset_start_bist - Run BIST on the adapter. 6555 * @ipr_cmd: ipr command struct 6556 * 6557 * Description: This function runs BIST on the adapter, then delays 2 seconds. 6558 * 6559 * Return value: 6560 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6561 **/ 6562 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 6563 { 6564 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6565 int rc; 6566 6567 ENTER; 6568 pci_block_user_cfg_access(ioa_cfg->pdev); 6569 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 6570 6571 if (rc != PCIBIOS_SUCCESSFUL) { 6572 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 6573 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6574 rc = IPR_RC_JOB_CONTINUE; 6575 } else { 6576 ipr_cmd->job_step = ipr_reset_bist_done; 6577 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 6578 rc = IPR_RC_JOB_RETURN; 6579 } 6580 6581 LEAVE; 6582 return rc; 6583 } 6584 6585 /** 6586 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter 6587 * @ipr_cmd: ipr command struct 6588 * 6589 * Description: This clears PCI reset to the adapter and delays two seconds. 6590 * 6591 * Return value: 6592 * IPR_RC_JOB_RETURN 6593 **/ 6594 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd) 6595 { 6596 ENTER; 6597 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset); 6598 ipr_cmd->job_step = ipr_reset_bist_done; 6599 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 6600 LEAVE; 6601 return IPR_RC_JOB_RETURN; 6602 } 6603 6604 /** 6605 * ipr_reset_slot_reset - Reset the PCI slot of the adapter. 6606 * @ipr_cmd: ipr command struct 6607 * 6608 * Description: This asserts PCI reset to the adapter. 6609 * 6610 * Return value: 6611 * IPR_RC_JOB_RETURN 6612 **/ 6613 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd) 6614 { 6615 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6616 struct pci_dev *pdev = ioa_cfg->pdev; 6617 6618 ENTER; 6619 pci_block_user_cfg_access(pdev); 6620 pci_set_pcie_reset_state(pdev, pcie_warm_reset); 6621 ipr_cmd->job_step = ipr_reset_slot_reset_done; 6622 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT); 6623 LEAVE; 6624 return IPR_RC_JOB_RETURN; 6625 } 6626 6627 /** 6628 * ipr_reset_allowed - Query whether or not IOA can be reset 6629 * @ioa_cfg: ioa config struct 6630 * 6631 * Return value: 6632 * 0 if reset not allowed / non-zero if reset is allowed 6633 **/ 6634 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 6635 { 6636 volatile u32 temp_reg; 6637 6638 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 6639 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 6640 } 6641 6642 /** 6643 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 6644 * @ipr_cmd: ipr command struct 6645 * 6646 * Description: This function waits for adapter permission to run BIST, 6647 * then runs BIST. If the adapter does not give permission after a 6648 * reasonable time, we will reset the adapter anyway. The impact of 6649 * resetting the adapter without warning the adapter is the risk of 6650 * losing the persistent error log on the adapter. If the adapter is 6651 * reset while it is writing to the flash on the adapter, the flash 6652 * segment will have bad ECC and be zeroed. 6653 * 6654 * Return value: 6655 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6656 **/ 6657 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 6658 { 6659 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6660 int rc = IPR_RC_JOB_RETURN; 6661 6662 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 6663 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 6664 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 6665 } else { 6666 ipr_cmd->job_step = ioa_cfg->reset; 6667 rc = IPR_RC_JOB_CONTINUE; 6668 } 6669 6670 return rc; 6671 } 6672 6673 /** 6674 * ipr_reset_alert_part2 - Alert the adapter of a pending reset 6675 * @ipr_cmd: ipr command struct 6676 * 6677 * Description: This function alerts the adapter that it will be reset. 6678 * If memory space is not currently enabled, proceed directly 6679 * to running BIST on the adapter. The timer must always be started 6680 * so we guarantee we do not run BIST from ipr_isr. 6681 * 6682 * Return value: 6683 * IPR_RC_JOB_RETURN 6684 **/ 6685 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 6686 { 6687 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6688 u16 cmd_reg; 6689 int rc; 6690 6691 ENTER; 6692 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 6693 6694 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 6695 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 6696 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg); 6697 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 6698 } else { 6699 ipr_cmd->job_step = ioa_cfg->reset; 6700 } 6701 6702 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 6703 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 6704 6705 LEAVE; 6706 return IPR_RC_JOB_RETURN; 6707 } 6708 6709 /** 6710 * ipr_reset_ucode_download_done - Microcode download completion 6711 * @ipr_cmd: ipr command struct 6712 * 6713 * Description: This function unmaps the microcode download buffer. 6714 * 6715 * Return value: 6716 * IPR_RC_JOB_CONTINUE 6717 **/ 6718 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 6719 { 6720 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6721 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 6722 6723 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, 6724 sglist->num_sg, DMA_TO_DEVICE); 6725 6726 ipr_cmd->job_step = ipr_reset_alert; 6727 return IPR_RC_JOB_CONTINUE; 6728 } 6729 6730 /** 6731 * ipr_reset_ucode_download - Download microcode to the adapter 6732 * @ipr_cmd: ipr command struct 6733 * 6734 * Description: This function checks to see if it there is microcode 6735 * to download to the adapter. If there is, a download is performed. 6736 * 6737 * Return value: 6738 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6739 **/ 6740 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 6741 { 6742 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6743 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 6744 6745 ENTER; 6746 ipr_cmd->job_step = ipr_reset_alert; 6747 6748 if (!sglist) 6749 return IPR_RC_JOB_CONTINUE; 6750 6751 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6752 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6753 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 6754 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 6755 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 6756 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 6757 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 6758 6759 ipr_build_ucode_ioadl(ipr_cmd, sglist); 6760 ipr_cmd->job_step = ipr_reset_ucode_download_done; 6761 6762 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 6763 IPR_WRITE_BUFFER_TIMEOUT); 6764 6765 LEAVE; 6766 return IPR_RC_JOB_RETURN; 6767 } 6768 6769 /** 6770 * ipr_reset_shutdown_ioa - Shutdown the adapter 6771 * @ipr_cmd: ipr command struct 6772 * 6773 * Description: This function issues an adapter shutdown of the 6774 * specified type to the specified adapter as part of the 6775 * adapter reset job. 6776 * 6777 * Return value: 6778 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6779 **/ 6780 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 6781 { 6782 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6783 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 6784 unsigned long timeout; 6785 int rc = IPR_RC_JOB_CONTINUE; 6786 6787 ENTER; 6788 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { 6789 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6790 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6791 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 6792 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 6793 6794 if (shutdown_type == IPR_SHUTDOWN_NORMAL) 6795 timeout = IPR_SHUTDOWN_TIMEOUT; 6796 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 6797 timeout = IPR_INTERNAL_TIMEOUT; 6798 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 6799 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO; 6800 else 6801 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 6802 6803 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 6804 6805 rc = IPR_RC_JOB_RETURN; 6806 ipr_cmd->job_step = ipr_reset_ucode_download; 6807 } else 6808 ipr_cmd->job_step = ipr_reset_alert; 6809 6810 LEAVE; 6811 return rc; 6812 } 6813 6814 /** 6815 * ipr_reset_ioa_job - Adapter reset job 6816 * @ipr_cmd: ipr command struct 6817 * 6818 * Description: This function is the job router for the adapter reset job. 6819 * 6820 * Return value: 6821 * none 6822 **/ 6823 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 6824 { 6825 u32 rc, ioasc; 6826 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6827 6828 do { 6829 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 6830 6831 if (ioa_cfg->reset_cmd != ipr_cmd) { 6832 /* 6833 * We are doing nested adapter resets and this is 6834 * not the current reset job. 6835 */ 6836 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6837 return; 6838 } 6839 6840 if (IPR_IOASC_SENSE_KEY(ioasc)) { 6841 rc = ipr_cmd->job_step_failed(ipr_cmd); 6842 if (rc == IPR_RC_JOB_RETURN) 6843 return; 6844 } 6845 6846 ipr_reinit_ipr_cmnd(ipr_cmd); 6847 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 6848 rc = ipr_cmd->job_step(ipr_cmd); 6849 } while(rc == IPR_RC_JOB_CONTINUE); 6850 } 6851 6852 /** 6853 * _ipr_initiate_ioa_reset - Initiate an adapter reset 6854 * @ioa_cfg: ioa config struct 6855 * @job_step: first job step of reset job 6856 * @shutdown_type: shutdown type 6857 * 6858 * Description: This function will initiate the reset of the given adapter 6859 * starting at the selected job step. 6860 * If the caller needs to wait on the completion of the reset, 6861 * the caller must sleep on the reset_wait_q. 6862 * 6863 * Return value: 6864 * none 6865 **/ 6866 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 6867 int (*job_step) (struct ipr_cmnd *), 6868 enum ipr_shutdown_type shutdown_type) 6869 { 6870 struct ipr_cmnd *ipr_cmd; 6871 6872 ioa_cfg->in_reset_reload = 1; 6873 ioa_cfg->allow_cmds = 0; 6874 scsi_block_requests(ioa_cfg->host); 6875 6876 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 6877 ioa_cfg->reset_cmd = ipr_cmd; 6878 ipr_cmd->job_step = job_step; 6879 ipr_cmd->u.shutdown_type = shutdown_type; 6880 6881 ipr_reset_ioa_job(ipr_cmd); 6882 } 6883 6884 /** 6885 * ipr_initiate_ioa_reset - Initiate an adapter reset 6886 * @ioa_cfg: ioa config struct 6887 * @shutdown_type: shutdown type 6888 * 6889 * Description: This function will initiate the reset of the given adapter. 6890 * If the caller needs to wait on the completion of the reset, 6891 * the caller must sleep on the reset_wait_q. 6892 * 6893 * Return value: 6894 * none 6895 **/ 6896 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 6897 enum ipr_shutdown_type shutdown_type) 6898 { 6899 if (ioa_cfg->ioa_is_dead) 6900 return; 6901 6902 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) 6903 ioa_cfg->sdt_state = ABORT_DUMP; 6904 6905 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 6906 dev_err(&ioa_cfg->pdev->dev, 6907 "IOA taken offline - error recovery failed\n"); 6908 6909 ioa_cfg->reset_retries = 0; 6910 ioa_cfg->ioa_is_dead = 1; 6911 6912 if (ioa_cfg->in_ioa_bringdown) { 6913 ioa_cfg->reset_cmd = NULL; 6914 ioa_cfg->in_reset_reload = 0; 6915 ipr_fail_all_ops(ioa_cfg); 6916 wake_up_all(&ioa_cfg->reset_wait_q); 6917 6918 spin_unlock_irq(ioa_cfg->host->host_lock); 6919 scsi_unblock_requests(ioa_cfg->host); 6920 spin_lock_irq(ioa_cfg->host->host_lock); 6921 return; 6922 } else { 6923 ioa_cfg->in_ioa_bringdown = 1; 6924 shutdown_type = IPR_SHUTDOWN_NONE; 6925 } 6926 } 6927 6928 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 6929 shutdown_type); 6930 } 6931 6932 /** 6933 * ipr_reset_freeze - Hold off all I/O activity 6934 * @ipr_cmd: ipr command struct 6935 * 6936 * Description: If the PCI slot is frozen, hold off all I/O 6937 * activity; then, as soon as the slot is available again, 6938 * initiate an adapter reset. 6939 */ 6940 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 6941 { 6942 /* Disallow new interrupts, avoid loop */ 6943 ipr_cmd->ioa_cfg->allow_interrupts = 0; 6944 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 6945 ipr_cmd->done = ipr_reset_ioa_job; 6946 return IPR_RC_JOB_RETURN; 6947 } 6948 6949 /** 6950 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 6951 * @pdev: PCI device struct 6952 * 6953 * Description: This routine is called to tell us that the PCI bus 6954 * is down. Can't do anything here, except put the device driver 6955 * into a holding pattern, waiting for the PCI bus to come back. 6956 */ 6957 static void ipr_pci_frozen(struct pci_dev *pdev) 6958 { 6959 unsigned long flags = 0; 6960 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6961 6962 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6963 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 6964 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6965 } 6966 6967 /** 6968 * ipr_pci_slot_reset - Called when PCI slot has been reset. 6969 * @pdev: PCI device struct 6970 * 6971 * Description: This routine is called by the pci error recovery 6972 * code after the PCI slot has been reset, just before we 6973 * should resume normal operations. 6974 */ 6975 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 6976 { 6977 unsigned long flags = 0; 6978 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6979 6980 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6981 if (ioa_cfg->needs_warm_reset) 6982 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6983 else 6984 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 6985 IPR_SHUTDOWN_NONE); 6986 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6987 return PCI_ERS_RESULT_RECOVERED; 6988 } 6989 6990 /** 6991 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 6992 * @pdev: PCI device struct 6993 * 6994 * Description: This routine is called when the PCI bus has 6995 * permanently failed. 6996 */ 6997 static void ipr_pci_perm_failure(struct pci_dev *pdev) 6998 { 6999 unsigned long flags = 0; 7000 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7001 7002 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 7003 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 7004 ioa_cfg->sdt_state = ABORT_DUMP; 7005 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES; 7006 ioa_cfg->in_ioa_bringdown = 1; 7007 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 7008 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 7009 } 7010 7011 /** 7012 * ipr_pci_error_detected - Called when a PCI error is detected. 7013 * @pdev: PCI device struct 7014 * @state: PCI channel state 7015 * 7016 * Description: Called when a PCI error is detected. 7017 * 7018 * Return value: 7019 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 7020 */ 7021 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 7022 pci_channel_state_t state) 7023 { 7024 switch (state) { 7025 case pci_channel_io_frozen: 7026 ipr_pci_frozen(pdev); 7027 return PCI_ERS_RESULT_NEED_RESET; 7028 case pci_channel_io_perm_failure: 7029 ipr_pci_perm_failure(pdev); 7030 return PCI_ERS_RESULT_DISCONNECT; 7031 break; 7032 default: 7033 break; 7034 } 7035 return PCI_ERS_RESULT_NEED_RESET; 7036 } 7037 7038 /** 7039 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 7040 * @ioa_cfg: ioa cfg struct 7041 * 7042 * Description: This is the second phase of adapter intialization 7043 * This function takes care of initilizing the adapter to the point 7044 * where it can accept new commands. 7045 7046 * Return value: 7047 * 0 on sucess / -EIO on failure 7048 **/ 7049 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 7050 { 7051 int rc = 0; 7052 unsigned long host_lock_flags = 0; 7053 7054 ENTER; 7055 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7056 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 7057 if (ioa_cfg->needs_hard_reset) { 7058 ioa_cfg->needs_hard_reset = 0; 7059 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 7060 } else 7061 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 7062 IPR_SHUTDOWN_NONE); 7063 7064 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7065 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7066 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7067 7068 if (ioa_cfg->ioa_is_dead) { 7069 rc = -EIO; 7070 } else if (ipr_invalid_adapter(ioa_cfg)) { 7071 if (!ipr_testmode) 7072 rc = -EIO; 7073 7074 dev_err(&ioa_cfg->pdev->dev, 7075 "Adapter not supported in this hardware configuration.\n"); 7076 } 7077 7078 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7079 7080 LEAVE; 7081 return rc; 7082 } 7083 7084 /** 7085 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 7086 * @ioa_cfg: ioa config struct 7087 * 7088 * Return value: 7089 * none 7090 **/ 7091 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 7092 { 7093 int i; 7094 7095 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 7096 if (ioa_cfg->ipr_cmnd_list[i]) 7097 pci_pool_free(ioa_cfg->ipr_cmd_pool, 7098 ioa_cfg->ipr_cmnd_list[i], 7099 ioa_cfg->ipr_cmnd_list_dma[i]); 7100 7101 ioa_cfg->ipr_cmnd_list[i] = NULL; 7102 } 7103 7104 if (ioa_cfg->ipr_cmd_pool) 7105 pci_pool_destroy (ioa_cfg->ipr_cmd_pool); 7106 7107 ioa_cfg->ipr_cmd_pool = NULL; 7108 } 7109 7110 /** 7111 * ipr_free_mem - Frees memory allocated for an adapter 7112 * @ioa_cfg: ioa cfg struct 7113 * 7114 * Return value: 7115 * nothing 7116 **/ 7117 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 7118 { 7119 int i; 7120 7121 kfree(ioa_cfg->res_entries); 7122 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), 7123 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 7124 ipr_free_cmd_blks(ioa_cfg); 7125 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 7126 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 7127 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table), 7128 ioa_cfg->cfg_table, 7129 ioa_cfg->cfg_table_dma); 7130 7131 for (i = 0; i < IPR_NUM_HCAMS; i++) { 7132 pci_free_consistent(ioa_cfg->pdev, 7133 sizeof(struct ipr_hostrcb), 7134 ioa_cfg->hostrcb[i], 7135 ioa_cfg->hostrcb_dma[i]); 7136 } 7137 7138 ipr_free_dump(ioa_cfg); 7139 kfree(ioa_cfg->trace); 7140 } 7141 7142 /** 7143 * ipr_free_all_resources - Free all allocated resources for an adapter. 7144 * @ipr_cmd: ipr command struct 7145 * 7146 * This function frees all allocated resources for the 7147 * specified adapter. 7148 * 7149 * Return value: 7150 * none 7151 **/ 7152 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 7153 { 7154 struct pci_dev *pdev = ioa_cfg->pdev; 7155 7156 ENTER; 7157 free_irq(pdev->irq, ioa_cfg); 7158 iounmap(ioa_cfg->hdw_dma_regs); 7159 pci_release_regions(pdev); 7160 ipr_free_mem(ioa_cfg); 7161 scsi_host_put(ioa_cfg->host); 7162 pci_disable_device(pdev); 7163 LEAVE; 7164 } 7165 7166 /** 7167 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 7168 * @ioa_cfg: ioa config struct 7169 * 7170 * Return value: 7171 * 0 on success / -ENOMEM on allocation failure 7172 **/ 7173 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 7174 { 7175 struct ipr_cmnd *ipr_cmd; 7176 struct ipr_ioarcb *ioarcb; 7177 dma_addr_t dma_addr; 7178 int i; 7179 7180 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, 7181 sizeof(struct ipr_cmnd), 8, 0); 7182 7183 if (!ioa_cfg->ipr_cmd_pool) 7184 return -ENOMEM; 7185 7186 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 7187 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr); 7188 7189 if (!ipr_cmd) { 7190 ipr_free_cmd_blks(ioa_cfg); 7191 return -ENOMEM; 7192 } 7193 7194 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 7195 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 7196 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 7197 7198 ioarcb = &ipr_cmd->ioarcb; 7199 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 7200 ioarcb->host_response_handle = cpu_to_be32(i << 2); 7201 ioarcb->write_ioadl_addr = 7202 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); 7203 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 7204 ioarcb->ioasa_host_pci_addr = 7205 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa)); 7206 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 7207 ipr_cmd->cmd_index = i; 7208 ipr_cmd->ioa_cfg = ioa_cfg; 7209 ipr_cmd->sense_buffer_dma = dma_addr + 7210 offsetof(struct ipr_cmnd, sense_buffer); 7211 7212 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 7213 } 7214 7215 return 0; 7216 } 7217 7218 /** 7219 * ipr_alloc_mem - Allocate memory for an adapter 7220 * @ioa_cfg: ioa config struct 7221 * 7222 * Return value: 7223 * 0 on success / non-zero for error 7224 **/ 7225 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 7226 { 7227 struct pci_dev *pdev = ioa_cfg->pdev; 7228 int i, rc = -ENOMEM; 7229 7230 ENTER; 7231 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * 7232 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL); 7233 7234 if (!ioa_cfg->res_entries) 7235 goto out; 7236 7237 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++) 7238 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 7239 7240 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, 7241 sizeof(struct ipr_misc_cbs), 7242 &ioa_cfg->vpd_cbs_dma); 7243 7244 if (!ioa_cfg->vpd_cbs) 7245 goto out_free_res_entries; 7246 7247 if (ipr_alloc_cmd_blks(ioa_cfg)) 7248 goto out_free_vpd_cbs; 7249 7250 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, 7251 sizeof(u32) * IPR_NUM_CMD_BLKS, 7252 &ioa_cfg->host_rrq_dma); 7253 7254 if (!ioa_cfg->host_rrq) 7255 goto out_ipr_free_cmd_blocks; 7256 7257 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev, 7258 sizeof(struct ipr_config_table), 7259 &ioa_cfg->cfg_table_dma); 7260 7261 if (!ioa_cfg->cfg_table) 7262 goto out_free_host_rrq; 7263 7264 for (i = 0; i < IPR_NUM_HCAMS; i++) { 7265 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, 7266 sizeof(struct ipr_hostrcb), 7267 &ioa_cfg->hostrcb_dma[i]); 7268 7269 if (!ioa_cfg->hostrcb[i]) 7270 goto out_free_hostrcb_dma; 7271 7272 ioa_cfg->hostrcb[i]->hostrcb_dma = 7273 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 7274 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg; 7275 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 7276 } 7277 7278 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * 7279 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 7280 7281 if (!ioa_cfg->trace) 7282 goto out_free_hostrcb_dma; 7283 7284 rc = 0; 7285 out: 7286 LEAVE; 7287 return rc; 7288 7289 out_free_hostrcb_dma: 7290 while (i-- > 0) { 7291 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), 7292 ioa_cfg->hostrcb[i], 7293 ioa_cfg->hostrcb_dma[i]); 7294 } 7295 pci_free_consistent(pdev, sizeof(struct ipr_config_table), 7296 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma); 7297 out_free_host_rrq: 7298 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 7299 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 7300 out_ipr_free_cmd_blocks: 7301 ipr_free_cmd_blks(ioa_cfg); 7302 out_free_vpd_cbs: 7303 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), 7304 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 7305 out_free_res_entries: 7306 kfree(ioa_cfg->res_entries); 7307 goto out; 7308 } 7309 7310 /** 7311 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 7312 * @ioa_cfg: ioa config struct 7313 * 7314 * Return value: 7315 * none 7316 **/ 7317 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 7318 { 7319 int i; 7320 7321 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 7322 ioa_cfg->bus_attr[i].bus = i; 7323 ioa_cfg->bus_attr[i].qas_enabled = 0; 7324 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 7325 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 7326 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 7327 else 7328 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 7329 } 7330 } 7331 7332 /** 7333 * ipr_init_ioa_cfg - Initialize IOA config struct 7334 * @ioa_cfg: ioa config struct 7335 * @host: scsi host struct 7336 * @pdev: PCI dev struct 7337 * 7338 * Return value: 7339 * none 7340 **/ 7341 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 7342 struct Scsi_Host *host, struct pci_dev *pdev) 7343 { 7344 const struct ipr_interrupt_offsets *p; 7345 struct ipr_interrupts *t; 7346 void __iomem *base; 7347 7348 ioa_cfg->host = host; 7349 ioa_cfg->pdev = pdev; 7350 ioa_cfg->log_level = ipr_log_level; 7351 ioa_cfg->doorbell = IPR_DOORBELL; 7352 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 7353 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 7354 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); 7355 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); 7356 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 7357 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 7358 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 7359 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 7360 7361 INIT_LIST_HEAD(&ioa_cfg->free_q); 7362 INIT_LIST_HEAD(&ioa_cfg->pending_q); 7363 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 7364 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 7365 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 7366 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 7367 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread); 7368 init_waitqueue_head(&ioa_cfg->reset_wait_q); 7369 ioa_cfg->sdt_state = INACTIVE; 7370 if (ipr_enable_cache) 7371 ioa_cfg->cache_state = CACHE_ENABLED; 7372 else 7373 ioa_cfg->cache_state = CACHE_DISABLED; 7374 7375 ipr_initialize_bus_attr(ioa_cfg); 7376 7377 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 7378 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 7379 host->max_channel = IPR_MAX_BUS_TO_SCAN; 7380 host->unique_id = host->host_no; 7381 host->max_cmd_len = IPR_MAX_CDB_LEN; 7382 pci_set_drvdata(pdev, ioa_cfg); 7383 7384 p = &ioa_cfg->chip_cfg->regs; 7385 t = &ioa_cfg->regs; 7386 base = ioa_cfg->hdw_dma_regs; 7387 7388 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 7389 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 7390 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 7391 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 7392 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 7393 t->ioarrin_reg = base + p->ioarrin_reg; 7394 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 7395 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 7396 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 7397 } 7398 7399 /** 7400 * ipr_get_chip_cfg - Find adapter chip configuration 7401 * @dev_id: PCI device id struct 7402 * 7403 * Return value: 7404 * ptr to chip config on success / NULL on failure 7405 **/ 7406 static const struct ipr_chip_cfg_t * __devinit 7407 ipr_get_chip_cfg(const struct pci_device_id *dev_id) 7408 { 7409 int i; 7410 7411 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 7412 if (ipr_chip[i].vendor == dev_id->vendor && 7413 ipr_chip[i].device == dev_id->device) 7414 return ipr_chip[i].cfg; 7415 return NULL; 7416 } 7417 7418 /** 7419 * ipr_probe_ioa - Allocates memory and does first stage of initialization 7420 * @pdev: PCI device struct 7421 * @dev_id: PCI device id struct 7422 * 7423 * Return value: 7424 * 0 on success / non-zero on failure 7425 **/ 7426 static int __devinit ipr_probe_ioa(struct pci_dev *pdev, 7427 const struct pci_device_id *dev_id) 7428 { 7429 struct ipr_ioa_cfg *ioa_cfg; 7430 struct Scsi_Host *host; 7431 unsigned long ipr_regs_pci; 7432 void __iomem *ipr_regs; 7433 int rc = PCIBIOS_SUCCESSFUL; 7434 volatile u32 mask, uproc, interrupts; 7435 7436 ENTER; 7437 7438 if ((rc = pci_enable_device(pdev))) { 7439 dev_err(&pdev->dev, "Cannot enable adapter\n"); 7440 goto out; 7441 } 7442 7443 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 7444 7445 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 7446 7447 if (!host) { 7448 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 7449 rc = -ENOMEM; 7450 goto out_disable; 7451 } 7452 7453 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 7454 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 7455 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, 7456 sata_port_info.flags, &ipr_sata_ops); 7457 7458 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id); 7459 7460 if (!ioa_cfg->chip_cfg) { 7461 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 7462 dev_id->vendor, dev_id->device); 7463 goto out_scsi_host_put; 7464 } 7465 7466 if (ipr_transop_timeout) 7467 ioa_cfg->transop_timeout = ipr_transop_timeout; 7468 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT) 7469 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT; 7470 else 7471 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT; 7472 7473 ioa_cfg->revid = pdev->revision; 7474 7475 ipr_regs_pci = pci_resource_start(pdev, 0); 7476 7477 rc = pci_request_regions(pdev, IPR_NAME); 7478 if (rc < 0) { 7479 dev_err(&pdev->dev, 7480 "Couldn't register memory range of registers\n"); 7481 goto out_scsi_host_put; 7482 } 7483 7484 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0)); 7485 7486 if (!ipr_regs) { 7487 dev_err(&pdev->dev, 7488 "Couldn't map memory range of registers\n"); 7489 rc = -ENOMEM; 7490 goto out_release_regions; 7491 } 7492 7493 ioa_cfg->hdw_dma_regs = ipr_regs; 7494 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 7495 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 7496 7497 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 7498 7499 pci_set_master(pdev); 7500 7501 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 7502 if (rc < 0) { 7503 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); 7504 goto cleanup_nomem; 7505 } 7506 7507 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 7508 ioa_cfg->chip_cfg->cache_line_size); 7509 7510 if (rc != PCIBIOS_SUCCESSFUL) { 7511 dev_err(&pdev->dev, "Write of cache line size failed\n"); 7512 rc = -EIO; 7513 goto cleanup_nomem; 7514 } 7515 7516 /* Save away PCI config space for use following IOA reset */ 7517 rc = pci_save_state(pdev); 7518 7519 if (rc != PCIBIOS_SUCCESSFUL) { 7520 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 7521 rc = -EIO; 7522 goto cleanup_nomem; 7523 } 7524 7525 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 7526 goto cleanup_nomem; 7527 7528 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 7529 goto cleanup_nomem; 7530 7531 rc = ipr_alloc_mem(ioa_cfg); 7532 if (rc < 0) { 7533 dev_err(&pdev->dev, 7534 "Couldn't allocate enough memory for device driver!\n"); 7535 goto cleanup_nomem; 7536 } 7537 7538 /* 7539 * If HRRQ updated interrupt is not masked, or reset alert is set, 7540 * the card is in an unknown state and needs a hard reset 7541 */ 7542 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7543 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg); 7544 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg); 7545 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 7546 ioa_cfg->needs_hard_reset = 1; 7547 if (interrupts & IPR_PCII_ERROR_INTERRUPTS) 7548 ioa_cfg->needs_hard_reset = 1; 7549 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED) 7550 ioa_cfg->ioa_unit_checked = 1; 7551 7552 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 7553 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg); 7554 7555 if (rc) { 7556 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 7557 pdev->irq, rc); 7558 goto cleanup_nolog; 7559 } 7560 7561 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) || 7562 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) { 7563 ioa_cfg->needs_warm_reset = 1; 7564 ioa_cfg->reset = ipr_reset_slot_reset; 7565 } else 7566 ioa_cfg->reset = ipr_reset_start_bist; 7567 7568 spin_lock(&ipr_driver_lock); 7569 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 7570 spin_unlock(&ipr_driver_lock); 7571 7572 LEAVE; 7573 out: 7574 return rc; 7575 7576 cleanup_nolog: 7577 ipr_free_mem(ioa_cfg); 7578 cleanup_nomem: 7579 iounmap(ipr_regs); 7580 out_release_regions: 7581 pci_release_regions(pdev); 7582 out_scsi_host_put: 7583 scsi_host_put(host); 7584 out_disable: 7585 pci_disable_device(pdev); 7586 goto out; 7587 } 7588 7589 /** 7590 * ipr_scan_vsets - Scans for VSET devices 7591 * @ioa_cfg: ioa config struct 7592 * 7593 * Description: Since the VSET resources do not follow SAM in that we can have 7594 * sparse LUNs with no LUN 0, we have to scan for these ourselves. 7595 * 7596 * Return value: 7597 * none 7598 **/ 7599 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) 7600 { 7601 int target, lun; 7602 7603 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) 7604 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) 7605 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); 7606 } 7607 7608 /** 7609 * ipr_initiate_ioa_bringdown - Bring down an adapter 7610 * @ioa_cfg: ioa config struct 7611 * @shutdown_type: shutdown type 7612 * 7613 * Description: This function will initiate bringing down the adapter. 7614 * This consists of issuing an IOA shutdown to the adapter 7615 * to flush the cache, and running BIST. 7616 * If the caller needs to wait on the completion of the reset, 7617 * the caller must sleep on the reset_wait_q. 7618 * 7619 * Return value: 7620 * none 7621 **/ 7622 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 7623 enum ipr_shutdown_type shutdown_type) 7624 { 7625 ENTER; 7626 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 7627 ioa_cfg->sdt_state = ABORT_DUMP; 7628 ioa_cfg->reset_retries = 0; 7629 ioa_cfg->in_ioa_bringdown = 1; 7630 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 7631 LEAVE; 7632 } 7633 7634 /** 7635 * __ipr_remove - Remove a single adapter 7636 * @pdev: pci device struct 7637 * 7638 * Adapter hot plug remove entry point. 7639 * 7640 * Return value: 7641 * none 7642 **/ 7643 static void __ipr_remove(struct pci_dev *pdev) 7644 { 7645 unsigned long host_lock_flags = 0; 7646 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7647 ENTER; 7648 7649 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7650 while(ioa_cfg->in_reset_reload) { 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 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7654 } 7655 7656 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 7657 7658 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7659 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7660 flush_scheduled_work(); 7661 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7662 7663 spin_lock(&ipr_driver_lock); 7664 list_del(&ioa_cfg->queue); 7665 spin_unlock(&ipr_driver_lock); 7666 7667 if (ioa_cfg->sdt_state == ABORT_DUMP) 7668 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 7669 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7670 7671 ipr_free_all_resources(ioa_cfg); 7672 7673 LEAVE; 7674 } 7675 7676 /** 7677 * ipr_remove - IOA hot plug remove entry point 7678 * @pdev: pci device struct 7679 * 7680 * Adapter hot plug remove entry point. 7681 * 7682 * Return value: 7683 * none 7684 **/ 7685 static void ipr_remove(struct pci_dev *pdev) 7686 { 7687 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7688 7689 ENTER; 7690 7691 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7692 &ipr_trace_attr); 7693 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj, 7694 &ipr_dump_attr); 7695 scsi_remove_host(ioa_cfg->host); 7696 7697 __ipr_remove(pdev); 7698 7699 LEAVE; 7700 } 7701 7702 /** 7703 * ipr_probe - Adapter hot plug add entry point 7704 * 7705 * Return value: 7706 * 0 on success / non-zero on failure 7707 **/ 7708 static int __devinit ipr_probe(struct pci_dev *pdev, 7709 const struct pci_device_id *dev_id) 7710 { 7711 struct ipr_ioa_cfg *ioa_cfg; 7712 int rc; 7713 7714 rc = ipr_probe_ioa(pdev, dev_id); 7715 7716 if (rc) 7717 return rc; 7718 7719 ioa_cfg = pci_get_drvdata(pdev); 7720 rc = ipr_probe_ioa_part2(ioa_cfg); 7721 7722 if (rc) { 7723 __ipr_remove(pdev); 7724 return rc; 7725 } 7726 7727 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 7728 7729 if (rc) { 7730 __ipr_remove(pdev); 7731 return rc; 7732 } 7733 7734 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7735 &ipr_trace_attr); 7736 7737 if (rc) { 7738 scsi_remove_host(ioa_cfg->host); 7739 __ipr_remove(pdev); 7740 return rc; 7741 } 7742 7743 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj, 7744 &ipr_dump_attr); 7745 7746 if (rc) { 7747 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7748 &ipr_trace_attr); 7749 scsi_remove_host(ioa_cfg->host); 7750 __ipr_remove(pdev); 7751 return rc; 7752 } 7753 7754 scsi_scan_host(ioa_cfg->host); 7755 ipr_scan_vsets(ioa_cfg); 7756 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); 7757 ioa_cfg->allow_ml_add_del = 1; 7758 ioa_cfg->host->max_channel = IPR_VSET_BUS; 7759 schedule_work(&ioa_cfg->work_q); 7760 return 0; 7761 } 7762 7763 /** 7764 * ipr_shutdown - Shutdown handler. 7765 * @pdev: pci device struct 7766 * 7767 * This function is invoked upon system shutdown/reboot. It will issue 7768 * an adapter shutdown to the adapter to flush the write cache. 7769 * 7770 * Return value: 7771 * none 7772 **/ 7773 static void ipr_shutdown(struct pci_dev *pdev) 7774 { 7775 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7776 unsigned long lock_flags = 0; 7777 7778 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 7779 while(ioa_cfg->in_reset_reload) { 7780 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 7781 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7782 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 7783 } 7784 7785 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 7786 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 7787 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7788 } 7789 7790 static struct pci_device_id ipr_pci_table[] __devinitdata = { 7791 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7792 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 }, 7793 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7794 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 }, 7795 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7796 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 }, 7797 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7798 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 }, 7799 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7800 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 }, 7801 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7802 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 }, 7803 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7804 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 }, 7805 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7806 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 7807 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7808 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7809 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 7810 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7811 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 7812 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7813 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7814 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 7815 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7816 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7817 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 7818 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7819 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 7820 IPR_USE_LONG_TRANSOP_TIMEOUT}, 7821 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7822 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 7823 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7824 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7825 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 7826 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7827 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7828 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0, 7829 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7830 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7831 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 }, 7832 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7833 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 7834 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET }, 7835 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 7836 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 }, 7837 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7838 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 }, 7839 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7840 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 7841 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7842 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7843 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 7844 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7845 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E, 7846 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 7847 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7848 { } 7849 }; 7850 MODULE_DEVICE_TABLE(pci, ipr_pci_table); 7851 7852 static struct pci_error_handlers ipr_err_handler = { 7853 .error_detected = ipr_pci_error_detected, 7854 .slot_reset = ipr_pci_slot_reset, 7855 }; 7856 7857 static struct pci_driver ipr_driver = { 7858 .name = IPR_NAME, 7859 .id_table = ipr_pci_table, 7860 .probe = ipr_probe, 7861 .remove = ipr_remove, 7862 .shutdown = ipr_shutdown, 7863 .err_handler = &ipr_err_handler, 7864 .dynids.use_driver_data = 1 7865 }; 7866 7867 /** 7868 * ipr_init - Module entry point 7869 * 7870 * Return value: 7871 * 0 on success / negative value on failure 7872 **/ 7873 static int __init ipr_init(void) 7874 { 7875 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 7876 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 7877 7878 return pci_register_driver(&ipr_driver); 7879 } 7880 7881 /** 7882 * ipr_exit - Module unload 7883 * 7884 * Module unload entry point. 7885 * 7886 * Return value: 7887 * none 7888 **/ 7889 static void __exit ipr_exit(void) 7890 { 7891 pci_unregister_driver(&ipr_driver); 7892 } 7893 7894 module_init(ipr_init); 7895 module_exit(ipr_exit); 7896