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 * @ap: SATA port to reset 3833 * @classes: class of the attached device 3834 * 3835 * This function issues a SATA phy reset to the affected ATA port. 3836 * 3837 * Return value: 3838 * 0 on success / non-zero on failure 3839 **/ 3840 static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes, 3841 unsigned long deadline) 3842 { 3843 struct ipr_sata_port *sata_port = 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 ap->ops->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->device[0].class = ATA_DEV_ATA; 4992 break; 4993 case IPR_PROTO_SATA_ATAPI: 4994 case IPR_PROTO_SAS_STP_ATAPI: 4995 ap->device[0].class = ATA_DEV_ATAPI; 4996 break; 4997 default: 4998 ap->device[0].class = ATA_DEV_UNKNOWN; 4999 ap->ops->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 .port_disable = ata_port_disable, 5266 .check_status = ipr_ata_check_status, 5267 .check_altstatus = ipr_ata_check_altstatus, 5268 .dev_select = ata_noop_dev_select, 5269 .phy_reset = ipr_ata_phy_reset, 5270 .post_internal_cmd = ipr_ata_post_internal, 5271 .tf_read = ipr_tf_read, 5272 .qc_prep = ata_noop_qc_prep, 5273 .qc_issue = ipr_qc_issue, 5274 .port_start = ata_sas_port_start, 5275 .port_stop = ata_sas_port_stop 5276 }; 5277 5278 static struct ata_port_info sata_port_info = { 5279 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET | 5280 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA, 5281 .pio_mask = 0x10, /* pio4 */ 5282 .mwdma_mask = 0x07, 5283 .udma_mask = 0x7f, /* udma0-6 */ 5284 .port_ops = &ipr_sata_ops 5285 }; 5286 5287 #ifdef CONFIG_PPC_PSERIES 5288 static const u16 ipr_blocked_processors[] = { 5289 PV_NORTHSTAR, 5290 PV_PULSAR, 5291 PV_POWER4, 5292 PV_ICESTAR, 5293 PV_SSTAR, 5294 PV_POWER4p, 5295 PV_630, 5296 PV_630p 5297 }; 5298 5299 /** 5300 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 5301 * @ioa_cfg: ioa cfg struct 5302 * 5303 * Adapters that use Gemstone revision < 3.1 do not work reliably on 5304 * certain pSeries hardware. This function determines if the given 5305 * adapter is in one of these confgurations or not. 5306 * 5307 * Return value: 5308 * 1 if adapter is not supported / 0 if adapter is supported 5309 **/ 5310 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 5311 { 5312 int i; 5313 5314 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) { 5315 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ 5316 if (__is_processor(ipr_blocked_processors[i])) 5317 return 1; 5318 } 5319 } 5320 return 0; 5321 } 5322 #else 5323 #define ipr_invalid_adapter(ioa_cfg) 0 5324 #endif 5325 5326 /** 5327 * ipr_ioa_bringdown_done - IOA bring down completion. 5328 * @ipr_cmd: ipr command struct 5329 * 5330 * This function processes the completion of an adapter bring down. 5331 * It wakes any reset sleepers. 5332 * 5333 * Return value: 5334 * IPR_RC_JOB_RETURN 5335 **/ 5336 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 5337 { 5338 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5339 5340 ENTER; 5341 ioa_cfg->in_reset_reload = 0; 5342 ioa_cfg->reset_retries = 0; 5343 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5344 wake_up_all(&ioa_cfg->reset_wait_q); 5345 5346 spin_unlock_irq(ioa_cfg->host->host_lock); 5347 scsi_unblock_requests(ioa_cfg->host); 5348 spin_lock_irq(ioa_cfg->host->host_lock); 5349 LEAVE; 5350 5351 return IPR_RC_JOB_RETURN; 5352 } 5353 5354 /** 5355 * ipr_ioa_reset_done - IOA reset completion. 5356 * @ipr_cmd: ipr command struct 5357 * 5358 * This function processes the completion of an adapter reset. 5359 * It schedules any necessary mid-layer add/removes and 5360 * wakes any reset sleepers. 5361 * 5362 * Return value: 5363 * IPR_RC_JOB_RETURN 5364 **/ 5365 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 5366 { 5367 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5368 struct ipr_resource_entry *res; 5369 struct ipr_hostrcb *hostrcb, *temp; 5370 int i = 0; 5371 5372 ENTER; 5373 ioa_cfg->in_reset_reload = 0; 5374 ioa_cfg->allow_cmds = 1; 5375 ioa_cfg->reset_cmd = NULL; 5376 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 5377 5378 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 5379 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { 5380 ipr_trace; 5381 break; 5382 } 5383 } 5384 schedule_work(&ioa_cfg->work_q); 5385 5386 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { 5387 list_del(&hostrcb->queue); 5388 if (i++ < IPR_NUM_LOG_HCAMS) 5389 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 5390 else 5391 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 5392 } 5393 5394 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS); 5395 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 5396 5397 ioa_cfg->reset_retries = 0; 5398 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5399 wake_up_all(&ioa_cfg->reset_wait_q); 5400 5401 spin_unlock_irq(ioa_cfg->host->host_lock); 5402 scsi_unblock_requests(ioa_cfg->host); 5403 spin_lock_irq(ioa_cfg->host->host_lock); 5404 5405 if (!ioa_cfg->allow_cmds) 5406 scsi_block_requests(ioa_cfg->host); 5407 5408 LEAVE; 5409 return IPR_RC_JOB_RETURN; 5410 } 5411 5412 /** 5413 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 5414 * @supported_dev: supported device struct 5415 * @vpids: vendor product id struct 5416 * 5417 * Return value: 5418 * none 5419 **/ 5420 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 5421 struct ipr_std_inq_vpids *vpids) 5422 { 5423 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 5424 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 5425 supported_dev->num_records = 1; 5426 supported_dev->data_length = 5427 cpu_to_be16(sizeof(struct ipr_supported_device)); 5428 supported_dev->reserved = 0; 5429 } 5430 5431 /** 5432 * ipr_set_supported_devs - Send Set Supported Devices for a device 5433 * @ipr_cmd: ipr command struct 5434 * 5435 * This function send a Set Supported Devices to the adapter 5436 * 5437 * Return value: 5438 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5439 **/ 5440 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 5441 { 5442 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5443 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 5444 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5445 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5446 struct ipr_resource_entry *res = ipr_cmd->u.res; 5447 5448 ipr_cmd->job_step = ipr_ioa_reset_done; 5449 5450 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 5451 if (!ipr_is_scsi_disk(res)) 5452 continue; 5453 5454 ipr_cmd->u.res = res; 5455 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids); 5456 5457 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5458 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5459 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5460 5461 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 5462 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 5463 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 5464 5465 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | 5466 sizeof(struct ipr_supported_device)); 5467 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma + 5468 offsetof(struct ipr_misc_cbs, supp_dev)); 5469 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5470 ioarcb->write_data_transfer_length = 5471 cpu_to_be32(sizeof(struct ipr_supported_device)); 5472 5473 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 5474 IPR_SET_SUP_DEVICE_TIMEOUT); 5475 5476 ipr_cmd->job_step = ipr_set_supported_devs; 5477 return IPR_RC_JOB_RETURN; 5478 } 5479 5480 return IPR_RC_JOB_CONTINUE; 5481 } 5482 5483 /** 5484 * ipr_setup_write_cache - Disable write cache if needed 5485 * @ipr_cmd: ipr command struct 5486 * 5487 * This function sets up adapters write cache to desired setting 5488 * 5489 * Return value: 5490 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5491 **/ 5492 static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd) 5493 { 5494 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5495 5496 ipr_cmd->job_step = ipr_set_supported_devs; 5497 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 5498 struct ipr_resource_entry, queue); 5499 5500 if (ioa_cfg->cache_state != CACHE_DISABLED) 5501 return IPR_RC_JOB_CONTINUE; 5502 5503 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5504 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5505 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 5506 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 5507 5508 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5509 5510 return IPR_RC_JOB_RETURN; 5511 } 5512 5513 /** 5514 * ipr_get_mode_page - Locate specified mode page 5515 * @mode_pages: mode page buffer 5516 * @page_code: page code to find 5517 * @len: minimum required length for mode page 5518 * 5519 * Return value: 5520 * pointer to mode page / NULL on failure 5521 **/ 5522 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 5523 u32 page_code, u32 len) 5524 { 5525 struct ipr_mode_page_hdr *mode_hdr; 5526 u32 page_length; 5527 u32 length; 5528 5529 if (!mode_pages || (mode_pages->hdr.length == 0)) 5530 return NULL; 5531 5532 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 5533 mode_hdr = (struct ipr_mode_page_hdr *) 5534 (mode_pages->data + mode_pages->hdr.block_desc_len); 5535 5536 while (length) { 5537 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 5538 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 5539 return mode_hdr; 5540 break; 5541 } else { 5542 page_length = (sizeof(struct ipr_mode_page_hdr) + 5543 mode_hdr->page_length); 5544 length -= page_length; 5545 mode_hdr = (struct ipr_mode_page_hdr *) 5546 ((unsigned long)mode_hdr + page_length); 5547 } 5548 } 5549 return NULL; 5550 } 5551 5552 /** 5553 * ipr_check_term_power - Check for term power errors 5554 * @ioa_cfg: ioa config struct 5555 * @mode_pages: IOAFP mode pages buffer 5556 * 5557 * Check the IOAFP's mode page 28 for term power errors 5558 * 5559 * Return value: 5560 * nothing 5561 **/ 5562 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 5563 struct ipr_mode_pages *mode_pages) 5564 { 5565 int i; 5566 int entry_length; 5567 struct ipr_dev_bus_entry *bus; 5568 struct ipr_mode_page28 *mode_page; 5569 5570 mode_page = ipr_get_mode_page(mode_pages, 0x28, 5571 sizeof(struct ipr_mode_page28)); 5572 5573 entry_length = mode_page->entry_length; 5574 5575 bus = mode_page->bus; 5576 5577 for (i = 0; i < mode_page->num_entries; i++) { 5578 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 5579 dev_err(&ioa_cfg->pdev->dev, 5580 "Term power is absent on scsi bus %d\n", 5581 bus->res_addr.bus); 5582 } 5583 5584 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 5585 } 5586 } 5587 5588 /** 5589 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 5590 * @ioa_cfg: ioa config struct 5591 * 5592 * Looks through the config table checking for SES devices. If 5593 * the SES device is in the SES table indicating a maximum SCSI 5594 * bus speed, the speed is limited for the bus. 5595 * 5596 * Return value: 5597 * none 5598 **/ 5599 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 5600 { 5601 u32 max_xfer_rate; 5602 int i; 5603 5604 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 5605 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 5606 ioa_cfg->bus_attr[i].bus_width); 5607 5608 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 5609 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 5610 } 5611 } 5612 5613 /** 5614 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 5615 * @ioa_cfg: ioa config struct 5616 * @mode_pages: mode page 28 buffer 5617 * 5618 * Updates mode page 28 based on driver configuration 5619 * 5620 * Return value: 5621 * none 5622 **/ 5623 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 5624 struct ipr_mode_pages *mode_pages) 5625 { 5626 int i, entry_length; 5627 struct ipr_dev_bus_entry *bus; 5628 struct ipr_bus_attributes *bus_attr; 5629 struct ipr_mode_page28 *mode_page; 5630 5631 mode_page = ipr_get_mode_page(mode_pages, 0x28, 5632 sizeof(struct ipr_mode_page28)); 5633 5634 entry_length = mode_page->entry_length; 5635 5636 /* Loop for each device bus entry */ 5637 for (i = 0, bus = mode_page->bus; 5638 i < mode_page->num_entries; 5639 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 5640 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 5641 dev_err(&ioa_cfg->pdev->dev, 5642 "Invalid resource address reported: 0x%08X\n", 5643 IPR_GET_PHYS_LOC(bus->res_addr)); 5644 continue; 5645 } 5646 5647 bus_attr = &ioa_cfg->bus_attr[i]; 5648 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 5649 bus->bus_width = bus_attr->bus_width; 5650 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 5651 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 5652 if (bus_attr->qas_enabled) 5653 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 5654 else 5655 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 5656 } 5657 } 5658 5659 /** 5660 * ipr_build_mode_select - Build a mode select command 5661 * @ipr_cmd: ipr command struct 5662 * @res_handle: resource handle to send command to 5663 * @parm: Byte 2 of Mode Sense command 5664 * @dma_addr: DMA buffer address 5665 * @xfer_len: data transfer length 5666 * 5667 * Return value: 5668 * none 5669 **/ 5670 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 5671 __be32 res_handle, u8 parm, u32 dma_addr, 5672 u8 xfer_len) 5673 { 5674 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5675 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5676 5677 ioarcb->res_handle = res_handle; 5678 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5679 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5680 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 5681 ioarcb->cmd_pkt.cdb[1] = parm; 5682 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5683 5684 ioadl->flags_and_data_len = 5685 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len); 5686 ioadl->address = cpu_to_be32(dma_addr); 5687 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5688 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len); 5689 } 5690 5691 /** 5692 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 5693 * @ipr_cmd: ipr command struct 5694 * 5695 * This function sets up the SCSI bus attributes and sends 5696 * a Mode Select for Page 28 to activate them. 5697 * 5698 * Return value: 5699 * IPR_RC_JOB_RETURN 5700 **/ 5701 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 5702 { 5703 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5704 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 5705 int length; 5706 5707 ENTER; 5708 ipr_scsi_bus_speed_limit(ioa_cfg); 5709 ipr_check_term_power(ioa_cfg, mode_pages); 5710 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 5711 length = mode_pages->hdr.length + 1; 5712 mode_pages->hdr.length = 0; 5713 5714 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 5715 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 5716 length); 5717 5718 ipr_cmd->job_step = ipr_setup_write_cache; 5719 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5720 5721 LEAVE; 5722 return IPR_RC_JOB_RETURN; 5723 } 5724 5725 /** 5726 * ipr_build_mode_sense - Builds a mode sense command 5727 * @ipr_cmd: ipr command struct 5728 * @res: resource entry struct 5729 * @parm: Byte 2 of mode sense command 5730 * @dma_addr: DMA address of mode sense buffer 5731 * @xfer_len: Size of DMA buffer 5732 * 5733 * Return value: 5734 * none 5735 **/ 5736 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 5737 __be32 res_handle, 5738 u8 parm, u32 dma_addr, u8 xfer_len) 5739 { 5740 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5741 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5742 5743 ioarcb->res_handle = res_handle; 5744 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 5745 ioarcb->cmd_pkt.cdb[2] = parm; 5746 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5747 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5748 5749 ioadl->flags_and_data_len = 5750 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 5751 ioadl->address = cpu_to_be32(dma_addr); 5752 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5753 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 5754 } 5755 5756 /** 5757 * ipr_reset_cmd_failed - Handle failure of IOA reset command 5758 * @ipr_cmd: ipr command struct 5759 * 5760 * This function handles the failure of an IOA bringup command. 5761 * 5762 * Return value: 5763 * IPR_RC_JOB_RETURN 5764 **/ 5765 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 5766 { 5767 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5768 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5769 5770 dev_err(&ioa_cfg->pdev->dev, 5771 "0x%02X failed with IOASC: 0x%08X\n", 5772 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 5773 5774 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5775 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5776 return IPR_RC_JOB_RETURN; 5777 } 5778 5779 /** 5780 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 5781 * @ipr_cmd: ipr command struct 5782 * 5783 * This function handles the failure of a Mode Sense to the IOAFP. 5784 * Some adapters do not handle all mode pages. 5785 * 5786 * Return value: 5787 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5788 **/ 5789 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 5790 { 5791 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5792 5793 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 5794 ipr_cmd->job_step = ipr_setup_write_cache; 5795 return IPR_RC_JOB_CONTINUE; 5796 } 5797 5798 return ipr_reset_cmd_failed(ipr_cmd); 5799 } 5800 5801 /** 5802 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 5803 * @ipr_cmd: ipr command struct 5804 * 5805 * This function send a Page 28 mode sense to the IOA to 5806 * retrieve SCSI bus attributes. 5807 * 5808 * Return value: 5809 * IPR_RC_JOB_RETURN 5810 **/ 5811 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 5812 { 5813 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5814 5815 ENTER; 5816 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 5817 0x28, ioa_cfg->vpd_cbs_dma + 5818 offsetof(struct ipr_misc_cbs, mode_pages), 5819 sizeof(struct ipr_mode_pages)); 5820 5821 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 5822 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 5823 5824 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5825 5826 LEAVE; 5827 return IPR_RC_JOB_RETURN; 5828 } 5829 5830 /** 5831 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA 5832 * @ipr_cmd: ipr command struct 5833 * 5834 * This function enables dual IOA RAID support if possible. 5835 * 5836 * Return value: 5837 * IPR_RC_JOB_RETURN 5838 **/ 5839 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd) 5840 { 5841 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5842 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 5843 struct ipr_mode_page24 *mode_page; 5844 int length; 5845 5846 ENTER; 5847 mode_page = ipr_get_mode_page(mode_pages, 0x24, 5848 sizeof(struct ipr_mode_page24)); 5849 5850 if (mode_page) 5851 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF; 5852 5853 length = mode_pages->hdr.length + 1; 5854 mode_pages->hdr.length = 0; 5855 5856 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 5857 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 5858 length); 5859 5860 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 5861 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5862 5863 LEAVE; 5864 return IPR_RC_JOB_RETURN; 5865 } 5866 5867 /** 5868 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense 5869 * @ipr_cmd: ipr command struct 5870 * 5871 * This function handles the failure of a Mode Sense to the IOAFP. 5872 * Some adapters do not handle all mode pages. 5873 * 5874 * Return value: 5875 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5876 **/ 5877 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd) 5878 { 5879 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5880 5881 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 5882 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 5883 return IPR_RC_JOB_CONTINUE; 5884 } 5885 5886 return ipr_reset_cmd_failed(ipr_cmd); 5887 } 5888 5889 /** 5890 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA 5891 * @ipr_cmd: ipr command struct 5892 * 5893 * This function send a mode sense to the IOA to retrieve 5894 * the IOA Advanced Function Control mode page. 5895 * 5896 * Return value: 5897 * IPR_RC_JOB_RETURN 5898 **/ 5899 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd) 5900 { 5901 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5902 5903 ENTER; 5904 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 5905 0x24, ioa_cfg->vpd_cbs_dma + 5906 offsetof(struct ipr_misc_cbs, mode_pages), 5907 sizeof(struct ipr_mode_pages)); 5908 5909 ipr_cmd->job_step = ipr_ioafp_mode_select_page24; 5910 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed; 5911 5912 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5913 5914 LEAVE; 5915 return IPR_RC_JOB_RETURN; 5916 } 5917 5918 /** 5919 * ipr_init_res_table - Initialize the resource table 5920 * @ipr_cmd: ipr command struct 5921 * 5922 * This function looks through the existing resource table, comparing 5923 * it with the config table. This function will take care of old/new 5924 * devices and schedule adding/removing them from the mid-layer 5925 * as appropriate. 5926 * 5927 * Return value: 5928 * IPR_RC_JOB_CONTINUE 5929 **/ 5930 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 5931 { 5932 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5933 struct ipr_resource_entry *res, *temp; 5934 struct ipr_config_table_entry *cfgte; 5935 int found, i; 5936 LIST_HEAD(old_res); 5937 5938 ENTER; 5939 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ) 5940 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 5941 5942 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 5943 list_move_tail(&res->queue, &old_res); 5944 5945 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) { 5946 cfgte = &ioa_cfg->cfg_table->dev[i]; 5947 found = 0; 5948 5949 list_for_each_entry_safe(res, temp, &old_res, queue) { 5950 if (!memcmp(&res->cfgte.res_addr, 5951 &cfgte->res_addr, sizeof(cfgte->res_addr))) { 5952 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5953 found = 1; 5954 break; 5955 } 5956 } 5957 5958 if (!found) { 5959 if (list_empty(&ioa_cfg->free_res_q)) { 5960 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 5961 break; 5962 } 5963 5964 found = 1; 5965 res = list_entry(ioa_cfg->free_res_q.next, 5966 struct ipr_resource_entry, queue); 5967 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5968 ipr_init_res_entry(res); 5969 res->add_to_ml = 1; 5970 } 5971 5972 if (found) 5973 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 5974 } 5975 5976 list_for_each_entry_safe(res, temp, &old_res, queue) { 5977 if (res->sdev) { 5978 res->del_from_ml = 1; 5979 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE; 5980 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5981 } else { 5982 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 5983 } 5984 } 5985 5986 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 5987 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24; 5988 else 5989 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 5990 5991 LEAVE; 5992 return IPR_RC_JOB_CONTINUE; 5993 } 5994 5995 /** 5996 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 5997 * @ipr_cmd: ipr command struct 5998 * 5999 * This function sends a Query IOA Configuration command 6000 * to the adapter to retrieve the IOA configuration table. 6001 * 6002 * Return value: 6003 * IPR_RC_JOB_RETURN 6004 **/ 6005 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 6006 { 6007 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6008 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6009 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 6010 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 6011 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 6012 6013 ENTER; 6014 if (cap->cap & IPR_CAP_DUAL_IOA_RAID) 6015 ioa_cfg->dual_raid = 1; 6016 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 6017 ucode_vpd->major_release, ucode_vpd->card_type, 6018 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 6019 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6020 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6021 6022 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 6023 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff; 6024 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff; 6025 6026 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 6027 ioarcb->read_data_transfer_length = 6028 cpu_to_be32(sizeof(struct ipr_config_table)); 6029 6030 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma); 6031 ioadl->flags_and_data_len = 6032 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table)); 6033 6034 ipr_cmd->job_step = ipr_init_res_table; 6035 6036 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6037 6038 LEAVE; 6039 return IPR_RC_JOB_RETURN; 6040 } 6041 6042 /** 6043 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 6044 * @ipr_cmd: ipr command struct 6045 * 6046 * This utility function sends an inquiry to the adapter. 6047 * 6048 * Return value: 6049 * none 6050 **/ 6051 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 6052 u32 dma_addr, u8 xfer_len) 6053 { 6054 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6055 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 6056 6057 ENTER; 6058 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6059 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6060 6061 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 6062 ioarcb->cmd_pkt.cdb[1] = flags; 6063 ioarcb->cmd_pkt.cdb[2] = page; 6064 ioarcb->cmd_pkt.cdb[4] = xfer_len; 6065 6066 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 6067 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 6068 6069 ioadl->address = cpu_to_be32(dma_addr); 6070 ioadl->flags_and_data_len = 6071 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 6072 6073 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6074 LEAVE; 6075 } 6076 6077 /** 6078 * ipr_inquiry_page_supported - Is the given inquiry page supported 6079 * @page0: inquiry page 0 buffer 6080 * @page: page code. 6081 * 6082 * This function determines if the specified inquiry page is supported. 6083 * 6084 * Return value: 6085 * 1 if page is supported / 0 if not 6086 **/ 6087 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 6088 { 6089 int i; 6090 6091 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 6092 if (page0->page[i] == page) 6093 return 1; 6094 6095 return 0; 6096 } 6097 6098 /** 6099 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter. 6100 * @ipr_cmd: ipr command struct 6101 * 6102 * This function sends a Page 0xD0 inquiry to the adapter 6103 * to retrieve adapter capabilities. 6104 * 6105 * Return value: 6106 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6107 **/ 6108 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd) 6109 { 6110 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6111 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 6112 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 6113 6114 ENTER; 6115 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 6116 memset(cap, 0, sizeof(*cap)); 6117 6118 if (ipr_inquiry_page_supported(page0, 0xD0)) { 6119 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0, 6120 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap), 6121 sizeof(struct ipr_inquiry_cap)); 6122 return IPR_RC_JOB_RETURN; 6123 } 6124 6125 LEAVE; 6126 return IPR_RC_JOB_CONTINUE; 6127 } 6128 6129 /** 6130 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 6131 * @ipr_cmd: ipr command struct 6132 * 6133 * This function sends a Page 3 inquiry to the adapter 6134 * to retrieve software VPD information. 6135 * 6136 * Return value: 6137 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6138 **/ 6139 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 6140 { 6141 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6142 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 6143 6144 ENTER; 6145 6146 if (!ipr_inquiry_page_supported(page0, 1)) 6147 ioa_cfg->cache_state = CACHE_NONE; 6148 6149 ipr_cmd->job_step = ipr_ioafp_cap_inquiry; 6150 6151 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 6152 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 6153 sizeof(struct ipr_inquiry_page3)); 6154 6155 LEAVE; 6156 return IPR_RC_JOB_RETURN; 6157 } 6158 6159 /** 6160 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 6161 * @ipr_cmd: ipr command struct 6162 * 6163 * This function sends a Page 0 inquiry to the adapter 6164 * to retrieve supported inquiry pages. 6165 * 6166 * Return value: 6167 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6168 **/ 6169 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 6170 { 6171 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6172 char type[5]; 6173 6174 ENTER; 6175 6176 /* Grab the type out of the VPD and store it away */ 6177 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 6178 type[4] = '\0'; 6179 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 6180 6181 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 6182 6183 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 6184 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 6185 sizeof(struct ipr_inquiry_page0)); 6186 6187 LEAVE; 6188 return IPR_RC_JOB_RETURN; 6189 } 6190 6191 /** 6192 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 6193 * @ipr_cmd: ipr command struct 6194 * 6195 * This function sends a standard inquiry to the adapter. 6196 * 6197 * Return value: 6198 * IPR_RC_JOB_RETURN 6199 **/ 6200 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 6201 { 6202 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6203 6204 ENTER; 6205 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 6206 6207 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 6208 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 6209 sizeof(struct ipr_ioa_vpd)); 6210 6211 LEAVE; 6212 return IPR_RC_JOB_RETURN; 6213 } 6214 6215 /** 6216 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ. 6217 * @ipr_cmd: ipr command struct 6218 * 6219 * This function send an Identify Host Request Response Queue 6220 * command to establish the HRRQ with the adapter. 6221 * 6222 * Return value: 6223 * IPR_RC_JOB_RETURN 6224 **/ 6225 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd) 6226 { 6227 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6228 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6229 6230 ENTER; 6231 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 6232 6233 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 6234 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6235 6236 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6237 ioarcb->cmd_pkt.cdb[2] = 6238 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff; 6239 ioarcb->cmd_pkt.cdb[3] = 6240 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff; 6241 ioarcb->cmd_pkt.cdb[4] = 6242 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff; 6243 ioarcb->cmd_pkt.cdb[5] = 6244 ((u32) ioa_cfg->host_rrq_dma) & 0xff; 6245 ioarcb->cmd_pkt.cdb[7] = 6246 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; 6247 ioarcb->cmd_pkt.cdb[8] = 6248 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; 6249 6250 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 6251 6252 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6253 6254 LEAVE; 6255 return IPR_RC_JOB_RETURN; 6256 } 6257 6258 /** 6259 * ipr_reset_timer_done - Adapter reset timer function 6260 * @ipr_cmd: ipr command struct 6261 * 6262 * Description: This function is used in adapter reset processing 6263 * for timing events. If the reset_cmd pointer in the IOA 6264 * config struct is not this adapter's we are doing nested 6265 * resets and fail_all_ops will take care of freeing the 6266 * command block. 6267 * 6268 * Return value: 6269 * none 6270 **/ 6271 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 6272 { 6273 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6274 unsigned long lock_flags = 0; 6275 6276 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6277 6278 if (ioa_cfg->reset_cmd == ipr_cmd) { 6279 list_del(&ipr_cmd->queue); 6280 ipr_cmd->done(ipr_cmd); 6281 } 6282 6283 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6284 } 6285 6286 /** 6287 * ipr_reset_start_timer - Start a timer for adapter reset job 6288 * @ipr_cmd: ipr command struct 6289 * @timeout: timeout value 6290 * 6291 * Description: This function is used in adapter reset processing 6292 * for timing events. If the reset_cmd pointer in the IOA 6293 * config struct is not this adapter's we are doing nested 6294 * resets and fail_all_ops will take care of freeing the 6295 * command block. 6296 * 6297 * Return value: 6298 * none 6299 **/ 6300 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 6301 unsigned long timeout) 6302 { 6303 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 6304 ipr_cmd->done = ipr_reset_ioa_job; 6305 6306 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 6307 ipr_cmd->timer.expires = jiffies + timeout; 6308 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 6309 add_timer(&ipr_cmd->timer); 6310 } 6311 6312 /** 6313 * ipr_init_ioa_mem - Initialize ioa_cfg control block 6314 * @ioa_cfg: ioa cfg struct 6315 * 6316 * Return value: 6317 * nothing 6318 **/ 6319 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 6320 { 6321 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); 6322 6323 /* Initialize Host RRQ pointers */ 6324 ioa_cfg->hrrq_start = ioa_cfg->host_rrq; 6325 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; 6326 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 6327 ioa_cfg->toggle_bit = 1; 6328 6329 /* Zero out config table */ 6330 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table)); 6331 } 6332 6333 /** 6334 * ipr_reset_enable_ioa - Enable the IOA following a reset. 6335 * @ipr_cmd: ipr command struct 6336 * 6337 * This function reinitializes some control blocks and 6338 * enables destructive diagnostics on the adapter. 6339 * 6340 * Return value: 6341 * IPR_RC_JOB_RETURN 6342 **/ 6343 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 6344 { 6345 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6346 volatile u32 int_reg; 6347 6348 ENTER; 6349 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq; 6350 ipr_init_ioa_mem(ioa_cfg); 6351 6352 ioa_cfg->allow_interrupts = 1; 6353 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 6354 6355 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 6356 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 6357 ioa_cfg->regs.clr_interrupt_mask_reg); 6358 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 6359 return IPR_RC_JOB_CONTINUE; 6360 } 6361 6362 /* Enable destructive diagnostics on IOA */ 6363 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg); 6364 6365 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg); 6366 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 6367 6368 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 6369 6370 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 6371 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ); 6372 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 6373 ipr_cmd->done = ipr_reset_ioa_job; 6374 add_timer(&ipr_cmd->timer); 6375 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 6376 6377 LEAVE; 6378 return IPR_RC_JOB_RETURN; 6379 } 6380 6381 /** 6382 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 6383 * @ipr_cmd: ipr command struct 6384 * 6385 * This function is invoked when an adapter dump has run out 6386 * of processing time. 6387 * 6388 * Return value: 6389 * IPR_RC_JOB_CONTINUE 6390 **/ 6391 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 6392 { 6393 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6394 6395 if (ioa_cfg->sdt_state == GET_DUMP) 6396 ioa_cfg->sdt_state = ABORT_DUMP; 6397 6398 ipr_cmd->job_step = ipr_reset_alert; 6399 6400 return IPR_RC_JOB_CONTINUE; 6401 } 6402 6403 /** 6404 * ipr_unit_check_no_data - Log a unit check/no data error log 6405 * @ioa_cfg: ioa config struct 6406 * 6407 * Logs an error indicating the adapter unit checked, but for some 6408 * reason, we were unable to fetch the unit check buffer. 6409 * 6410 * Return value: 6411 * nothing 6412 **/ 6413 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 6414 { 6415 ioa_cfg->errors_logged++; 6416 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 6417 } 6418 6419 /** 6420 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 6421 * @ioa_cfg: ioa config struct 6422 * 6423 * Fetches the unit check buffer from the adapter by clocking the data 6424 * through the mailbox register. 6425 * 6426 * Return value: 6427 * nothing 6428 **/ 6429 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 6430 { 6431 unsigned long mailbox; 6432 struct ipr_hostrcb *hostrcb; 6433 struct ipr_uc_sdt sdt; 6434 int rc, length; 6435 u32 ioasc; 6436 6437 mailbox = readl(ioa_cfg->ioa_mailbox); 6438 6439 if (!ipr_sdt_is_fmt2(mailbox)) { 6440 ipr_unit_check_no_data(ioa_cfg); 6441 return; 6442 } 6443 6444 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 6445 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 6446 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 6447 6448 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) || 6449 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) { 6450 ipr_unit_check_no_data(ioa_cfg); 6451 return; 6452 } 6453 6454 /* Find length of the first sdt entry (UC buffer) */ 6455 length = (be32_to_cpu(sdt.entry[0].end_offset) - 6456 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK; 6457 6458 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 6459 struct ipr_hostrcb, queue); 6460 list_del(&hostrcb->queue); 6461 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 6462 6463 rc = ipr_get_ldump_data_section(ioa_cfg, 6464 be32_to_cpu(sdt.entry[0].bar_str_offset), 6465 (__be32 *)&hostrcb->hcam, 6466 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 6467 6468 if (!rc) { 6469 ipr_handle_log_data(ioa_cfg, hostrcb); 6470 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc); 6471 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED && 6472 ioa_cfg->sdt_state == GET_DUMP) 6473 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 6474 } else 6475 ipr_unit_check_no_data(ioa_cfg); 6476 6477 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 6478 } 6479 6480 /** 6481 * ipr_reset_restore_cfg_space - Restore PCI config space. 6482 * @ipr_cmd: ipr command struct 6483 * 6484 * Description: This function restores the saved PCI config space of 6485 * the adapter, fails all outstanding ops back to the callers, and 6486 * fetches the dump/unit check if applicable to this reset. 6487 * 6488 * Return value: 6489 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6490 **/ 6491 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 6492 { 6493 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6494 int rc; 6495 6496 ENTER; 6497 rc = pci_restore_state(ioa_cfg->pdev); 6498 6499 if (rc != PCIBIOS_SUCCESSFUL) { 6500 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6501 return IPR_RC_JOB_CONTINUE; 6502 } 6503 6504 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 6505 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6506 return IPR_RC_JOB_CONTINUE; 6507 } 6508 6509 ipr_fail_all_ops(ioa_cfg); 6510 6511 if (ioa_cfg->ioa_unit_checked) { 6512 ioa_cfg->ioa_unit_checked = 0; 6513 ipr_get_unit_check_buffer(ioa_cfg); 6514 ipr_cmd->job_step = ipr_reset_alert; 6515 ipr_reset_start_timer(ipr_cmd, 0); 6516 return IPR_RC_JOB_RETURN; 6517 } 6518 6519 if (ioa_cfg->in_ioa_bringdown) { 6520 ipr_cmd->job_step = ipr_ioa_bringdown_done; 6521 } else { 6522 ipr_cmd->job_step = ipr_reset_enable_ioa; 6523 6524 if (GET_DUMP == ioa_cfg->sdt_state) { 6525 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); 6526 ipr_cmd->job_step = ipr_reset_wait_for_dump; 6527 schedule_work(&ioa_cfg->work_q); 6528 return IPR_RC_JOB_RETURN; 6529 } 6530 } 6531 6532 ENTER; 6533 return IPR_RC_JOB_CONTINUE; 6534 } 6535 6536 /** 6537 * ipr_reset_bist_done - BIST has completed on the adapter. 6538 * @ipr_cmd: ipr command struct 6539 * 6540 * Description: Unblock config space and resume the reset process. 6541 * 6542 * Return value: 6543 * IPR_RC_JOB_CONTINUE 6544 **/ 6545 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd) 6546 { 6547 ENTER; 6548 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 6549 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 6550 LEAVE; 6551 return IPR_RC_JOB_CONTINUE; 6552 } 6553 6554 /** 6555 * ipr_reset_start_bist - Run BIST on the adapter. 6556 * @ipr_cmd: ipr command struct 6557 * 6558 * Description: This function runs BIST on the adapter, then delays 2 seconds. 6559 * 6560 * Return value: 6561 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6562 **/ 6563 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 6564 { 6565 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6566 int rc; 6567 6568 ENTER; 6569 pci_block_user_cfg_access(ioa_cfg->pdev); 6570 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 6571 6572 if (rc != PCIBIOS_SUCCESSFUL) { 6573 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 6574 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6575 rc = IPR_RC_JOB_CONTINUE; 6576 } else { 6577 ipr_cmd->job_step = ipr_reset_bist_done; 6578 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 6579 rc = IPR_RC_JOB_RETURN; 6580 } 6581 6582 LEAVE; 6583 return rc; 6584 } 6585 6586 /** 6587 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter 6588 * @ipr_cmd: ipr command struct 6589 * 6590 * Description: This clears PCI reset to the adapter and delays two seconds. 6591 * 6592 * Return value: 6593 * IPR_RC_JOB_RETURN 6594 **/ 6595 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd) 6596 { 6597 ENTER; 6598 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset); 6599 ipr_cmd->job_step = ipr_reset_bist_done; 6600 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 6601 LEAVE; 6602 return IPR_RC_JOB_RETURN; 6603 } 6604 6605 /** 6606 * ipr_reset_slot_reset - Reset the PCI slot of the adapter. 6607 * @ipr_cmd: ipr command struct 6608 * 6609 * Description: This asserts PCI reset to the adapter. 6610 * 6611 * Return value: 6612 * IPR_RC_JOB_RETURN 6613 **/ 6614 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd) 6615 { 6616 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6617 struct pci_dev *pdev = ioa_cfg->pdev; 6618 6619 ENTER; 6620 pci_block_user_cfg_access(pdev); 6621 pci_set_pcie_reset_state(pdev, pcie_warm_reset); 6622 ipr_cmd->job_step = ipr_reset_slot_reset_done; 6623 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT); 6624 LEAVE; 6625 return IPR_RC_JOB_RETURN; 6626 } 6627 6628 /** 6629 * ipr_reset_allowed - Query whether or not IOA can be reset 6630 * @ioa_cfg: ioa config struct 6631 * 6632 * Return value: 6633 * 0 if reset not allowed / non-zero if reset is allowed 6634 **/ 6635 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 6636 { 6637 volatile u32 temp_reg; 6638 6639 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 6640 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 6641 } 6642 6643 /** 6644 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 6645 * @ipr_cmd: ipr command struct 6646 * 6647 * Description: This function waits for adapter permission to run BIST, 6648 * then runs BIST. If the adapter does not give permission after a 6649 * reasonable time, we will reset the adapter anyway. The impact of 6650 * resetting the adapter without warning the adapter is the risk of 6651 * losing the persistent error log on the adapter. If the adapter is 6652 * reset while it is writing to the flash on the adapter, the flash 6653 * segment will have bad ECC and be zeroed. 6654 * 6655 * Return value: 6656 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6657 **/ 6658 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 6659 { 6660 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6661 int rc = IPR_RC_JOB_RETURN; 6662 6663 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 6664 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 6665 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 6666 } else { 6667 ipr_cmd->job_step = ioa_cfg->reset; 6668 rc = IPR_RC_JOB_CONTINUE; 6669 } 6670 6671 return rc; 6672 } 6673 6674 /** 6675 * ipr_reset_alert_part2 - Alert the adapter of a pending reset 6676 * @ipr_cmd: ipr command struct 6677 * 6678 * Description: This function alerts the adapter that it will be reset. 6679 * If memory space is not currently enabled, proceed directly 6680 * to running BIST on the adapter. The timer must always be started 6681 * so we guarantee we do not run BIST from ipr_isr. 6682 * 6683 * Return value: 6684 * IPR_RC_JOB_RETURN 6685 **/ 6686 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 6687 { 6688 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6689 u16 cmd_reg; 6690 int rc; 6691 6692 ENTER; 6693 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 6694 6695 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 6696 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 6697 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg); 6698 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 6699 } else { 6700 ipr_cmd->job_step = ioa_cfg->reset; 6701 } 6702 6703 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 6704 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 6705 6706 LEAVE; 6707 return IPR_RC_JOB_RETURN; 6708 } 6709 6710 /** 6711 * ipr_reset_ucode_download_done - Microcode download completion 6712 * @ipr_cmd: ipr command struct 6713 * 6714 * Description: This function unmaps the microcode download buffer. 6715 * 6716 * Return value: 6717 * IPR_RC_JOB_CONTINUE 6718 **/ 6719 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 6720 { 6721 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6722 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 6723 6724 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, 6725 sglist->num_sg, DMA_TO_DEVICE); 6726 6727 ipr_cmd->job_step = ipr_reset_alert; 6728 return IPR_RC_JOB_CONTINUE; 6729 } 6730 6731 /** 6732 * ipr_reset_ucode_download - Download microcode to the adapter 6733 * @ipr_cmd: ipr command struct 6734 * 6735 * Description: This function checks to see if it there is microcode 6736 * to download to the adapter. If there is, a download is performed. 6737 * 6738 * Return value: 6739 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6740 **/ 6741 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 6742 { 6743 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6744 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 6745 6746 ENTER; 6747 ipr_cmd->job_step = ipr_reset_alert; 6748 6749 if (!sglist) 6750 return IPR_RC_JOB_CONTINUE; 6751 6752 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6753 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6754 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 6755 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 6756 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 6757 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 6758 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 6759 6760 ipr_build_ucode_ioadl(ipr_cmd, sglist); 6761 ipr_cmd->job_step = ipr_reset_ucode_download_done; 6762 6763 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 6764 IPR_WRITE_BUFFER_TIMEOUT); 6765 6766 LEAVE; 6767 return IPR_RC_JOB_RETURN; 6768 } 6769 6770 /** 6771 * ipr_reset_shutdown_ioa - Shutdown the adapter 6772 * @ipr_cmd: ipr command struct 6773 * 6774 * Description: This function issues an adapter shutdown of the 6775 * specified type to the specified adapter as part of the 6776 * adapter reset job. 6777 * 6778 * Return value: 6779 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6780 **/ 6781 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 6782 { 6783 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6784 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 6785 unsigned long timeout; 6786 int rc = IPR_RC_JOB_CONTINUE; 6787 6788 ENTER; 6789 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { 6790 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6791 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6792 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 6793 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 6794 6795 if (shutdown_type == IPR_SHUTDOWN_NORMAL) 6796 timeout = IPR_SHUTDOWN_TIMEOUT; 6797 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 6798 timeout = IPR_INTERNAL_TIMEOUT; 6799 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 6800 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO; 6801 else 6802 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 6803 6804 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 6805 6806 rc = IPR_RC_JOB_RETURN; 6807 ipr_cmd->job_step = ipr_reset_ucode_download; 6808 } else 6809 ipr_cmd->job_step = ipr_reset_alert; 6810 6811 LEAVE; 6812 return rc; 6813 } 6814 6815 /** 6816 * ipr_reset_ioa_job - Adapter reset job 6817 * @ipr_cmd: ipr command struct 6818 * 6819 * Description: This function is the job router for the adapter reset job. 6820 * 6821 * Return value: 6822 * none 6823 **/ 6824 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 6825 { 6826 u32 rc, ioasc; 6827 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6828 6829 do { 6830 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 6831 6832 if (ioa_cfg->reset_cmd != ipr_cmd) { 6833 /* 6834 * We are doing nested adapter resets and this is 6835 * not the current reset job. 6836 */ 6837 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6838 return; 6839 } 6840 6841 if (IPR_IOASC_SENSE_KEY(ioasc)) { 6842 rc = ipr_cmd->job_step_failed(ipr_cmd); 6843 if (rc == IPR_RC_JOB_RETURN) 6844 return; 6845 } 6846 6847 ipr_reinit_ipr_cmnd(ipr_cmd); 6848 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 6849 rc = ipr_cmd->job_step(ipr_cmd); 6850 } while(rc == IPR_RC_JOB_CONTINUE); 6851 } 6852 6853 /** 6854 * _ipr_initiate_ioa_reset - Initiate an adapter reset 6855 * @ioa_cfg: ioa config struct 6856 * @job_step: first job step of reset job 6857 * @shutdown_type: shutdown type 6858 * 6859 * Description: This function will initiate the reset of the given adapter 6860 * starting at the selected job step. 6861 * If the caller needs to wait on the completion of the reset, 6862 * the caller must sleep on the reset_wait_q. 6863 * 6864 * Return value: 6865 * none 6866 **/ 6867 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 6868 int (*job_step) (struct ipr_cmnd *), 6869 enum ipr_shutdown_type shutdown_type) 6870 { 6871 struct ipr_cmnd *ipr_cmd; 6872 6873 ioa_cfg->in_reset_reload = 1; 6874 ioa_cfg->allow_cmds = 0; 6875 scsi_block_requests(ioa_cfg->host); 6876 6877 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 6878 ioa_cfg->reset_cmd = ipr_cmd; 6879 ipr_cmd->job_step = job_step; 6880 ipr_cmd->u.shutdown_type = shutdown_type; 6881 6882 ipr_reset_ioa_job(ipr_cmd); 6883 } 6884 6885 /** 6886 * ipr_initiate_ioa_reset - Initiate an adapter reset 6887 * @ioa_cfg: ioa config struct 6888 * @shutdown_type: shutdown type 6889 * 6890 * Description: This function will initiate the reset of the given adapter. 6891 * If the caller needs to wait on the completion of the reset, 6892 * the caller must sleep on the reset_wait_q. 6893 * 6894 * Return value: 6895 * none 6896 **/ 6897 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 6898 enum ipr_shutdown_type shutdown_type) 6899 { 6900 if (ioa_cfg->ioa_is_dead) 6901 return; 6902 6903 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) 6904 ioa_cfg->sdt_state = ABORT_DUMP; 6905 6906 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 6907 dev_err(&ioa_cfg->pdev->dev, 6908 "IOA taken offline - error recovery failed\n"); 6909 6910 ioa_cfg->reset_retries = 0; 6911 ioa_cfg->ioa_is_dead = 1; 6912 6913 if (ioa_cfg->in_ioa_bringdown) { 6914 ioa_cfg->reset_cmd = NULL; 6915 ioa_cfg->in_reset_reload = 0; 6916 ipr_fail_all_ops(ioa_cfg); 6917 wake_up_all(&ioa_cfg->reset_wait_q); 6918 6919 spin_unlock_irq(ioa_cfg->host->host_lock); 6920 scsi_unblock_requests(ioa_cfg->host); 6921 spin_lock_irq(ioa_cfg->host->host_lock); 6922 return; 6923 } else { 6924 ioa_cfg->in_ioa_bringdown = 1; 6925 shutdown_type = IPR_SHUTDOWN_NONE; 6926 } 6927 } 6928 6929 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 6930 shutdown_type); 6931 } 6932 6933 /** 6934 * ipr_reset_freeze - Hold off all I/O activity 6935 * @ipr_cmd: ipr command struct 6936 * 6937 * Description: If the PCI slot is frozen, hold off all I/O 6938 * activity; then, as soon as the slot is available again, 6939 * initiate an adapter reset. 6940 */ 6941 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 6942 { 6943 /* Disallow new interrupts, avoid loop */ 6944 ipr_cmd->ioa_cfg->allow_interrupts = 0; 6945 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 6946 ipr_cmd->done = ipr_reset_ioa_job; 6947 return IPR_RC_JOB_RETURN; 6948 } 6949 6950 /** 6951 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 6952 * @pdev: PCI device struct 6953 * 6954 * Description: This routine is called to tell us that the PCI bus 6955 * is down. Can't do anything here, except put the device driver 6956 * into a holding pattern, waiting for the PCI bus to come back. 6957 */ 6958 static void ipr_pci_frozen(struct pci_dev *pdev) 6959 { 6960 unsigned long flags = 0; 6961 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6962 6963 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6964 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 6965 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6966 } 6967 6968 /** 6969 * ipr_pci_slot_reset - Called when PCI slot has been reset. 6970 * @pdev: PCI device struct 6971 * 6972 * Description: This routine is called by the pci error recovery 6973 * code after the PCI slot has been reset, just before we 6974 * should resume normal operations. 6975 */ 6976 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 6977 { 6978 unsigned long flags = 0; 6979 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6980 6981 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6982 if (ioa_cfg->needs_warm_reset) 6983 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6984 else 6985 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 6986 IPR_SHUTDOWN_NONE); 6987 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6988 return PCI_ERS_RESULT_RECOVERED; 6989 } 6990 6991 /** 6992 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 6993 * @pdev: PCI device struct 6994 * 6995 * Description: This routine is called when the PCI bus has 6996 * permanently failed. 6997 */ 6998 static void ipr_pci_perm_failure(struct pci_dev *pdev) 6999 { 7000 unsigned long flags = 0; 7001 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7002 7003 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 7004 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 7005 ioa_cfg->sdt_state = ABORT_DUMP; 7006 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES; 7007 ioa_cfg->in_ioa_bringdown = 1; 7008 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 7009 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 7010 } 7011 7012 /** 7013 * ipr_pci_error_detected - Called when a PCI error is detected. 7014 * @pdev: PCI device struct 7015 * @state: PCI channel state 7016 * 7017 * Description: Called when a PCI error is detected. 7018 * 7019 * Return value: 7020 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 7021 */ 7022 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 7023 pci_channel_state_t state) 7024 { 7025 switch (state) { 7026 case pci_channel_io_frozen: 7027 ipr_pci_frozen(pdev); 7028 return PCI_ERS_RESULT_NEED_RESET; 7029 case pci_channel_io_perm_failure: 7030 ipr_pci_perm_failure(pdev); 7031 return PCI_ERS_RESULT_DISCONNECT; 7032 break; 7033 default: 7034 break; 7035 } 7036 return PCI_ERS_RESULT_NEED_RESET; 7037 } 7038 7039 /** 7040 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 7041 * @ioa_cfg: ioa cfg struct 7042 * 7043 * Description: This is the second phase of adapter intialization 7044 * This function takes care of initilizing the adapter to the point 7045 * where it can accept new commands. 7046 7047 * Return value: 7048 * 0 on sucess / -EIO on failure 7049 **/ 7050 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 7051 { 7052 int rc = 0; 7053 unsigned long host_lock_flags = 0; 7054 7055 ENTER; 7056 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7057 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 7058 if (ioa_cfg->needs_hard_reset) { 7059 ioa_cfg->needs_hard_reset = 0; 7060 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 7061 } else 7062 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 7063 IPR_SHUTDOWN_NONE); 7064 7065 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7066 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7067 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7068 7069 if (ioa_cfg->ioa_is_dead) { 7070 rc = -EIO; 7071 } else if (ipr_invalid_adapter(ioa_cfg)) { 7072 if (!ipr_testmode) 7073 rc = -EIO; 7074 7075 dev_err(&ioa_cfg->pdev->dev, 7076 "Adapter not supported in this hardware configuration.\n"); 7077 } 7078 7079 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7080 7081 LEAVE; 7082 return rc; 7083 } 7084 7085 /** 7086 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 7087 * @ioa_cfg: ioa config struct 7088 * 7089 * Return value: 7090 * none 7091 **/ 7092 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 7093 { 7094 int i; 7095 7096 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 7097 if (ioa_cfg->ipr_cmnd_list[i]) 7098 pci_pool_free(ioa_cfg->ipr_cmd_pool, 7099 ioa_cfg->ipr_cmnd_list[i], 7100 ioa_cfg->ipr_cmnd_list_dma[i]); 7101 7102 ioa_cfg->ipr_cmnd_list[i] = NULL; 7103 } 7104 7105 if (ioa_cfg->ipr_cmd_pool) 7106 pci_pool_destroy (ioa_cfg->ipr_cmd_pool); 7107 7108 ioa_cfg->ipr_cmd_pool = NULL; 7109 } 7110 7111 /** 7112 * ipr_free_mem - Frees memory allocated for an adapter 7113 * @ioa_cfg: ioa cfg struct 7114 * 7115 * Return value: 7116 * nothing 7117 **/ 7118 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 7119 { 7120 int i; 7121 7122 kfree(ioa_cfg->res_entries); 7123 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), 7124 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 7125 ipr_free_cmd_blks(ioa_cfg); 7126 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 7127 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 7128 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table), 7129 ioa_cfg->cfg_table, 7130 ioa_cfg->cfg_table_dma); 7131 7132 for (i = 0; i < IPR_NUM_HCAMS; i++) { 7133 pci_free_consistent(ioa_cfg->pdev, 7134 sizeof(struct ipr_hostrcb), 7135 ioa_cfg->hostrcb[i], 7136 ioa_cfg->hostrcb_dma[i]); 7137 } 7138 7139 ipr_free_dump(ioa_cfg); 7140 kfree(ioa_cfg->trace); 7141 } 7142 7143 /** 7144 * ipr_free_all_resources - Free all allocated resources for an adapter. 7145 * @ipr_cmd: ipr command struct 7146 * 7147 * This function frees all allocated resources for the 7148 * specified adapter. 7149 * 7150 * Return value: 7151 * none 7152 **/ 7153 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 7154 { 7155 struct pci_dev *pdev = ioa_cfg->pdev; 7156 7157 ENTER; 7158 free_irq(pdev->irq, ioa_cfg); 7159 iounmap(ioa_cfg->hdw_dma_regs); 7160 pci_release_regions(pdev); 7161 ipr_free_mem(ioa_cfg); 7162 scsi_host_put(ioa_cfg->host); 7163 pci_disable_device(pdev); 7164 LEAVE; 7165 } 7166 7167 /** 7168 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 7169 * @ioa_cfg: ioa config struct 7170 * 7171 * Return value: 7172 * 0 on success / -ENOMEM on allocation failure 7173 **/ 7174 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 7175 { 7176 struct ipr_cmnd *ipr_cmd; 7177 struct ipr_ioarcb *ioarcb; 7178 dma_addr_t dma_addr; 7179 int i; 7180 7181 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, 7182 sizeof(struct ipr_cmnd), 8, 0); 7183 7184 if (!ioa_cfg->ipr_cmd_pool) 7185 return -ENOMEM; 7186 7187 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 7188 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr); 7189 7190 if (!ipr_cmd) { 7191 ipr_free_cmd_blks(ioa_cfg); 7192 return -ENOMEM; 7193 } 7194 7195 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 7196 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 7197 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 7198 7199 ioarcb = &ipr_cmd->ioarcb; 7200 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 7201 ioarcb->host_response_handle = cpu_to_be32(i << 2); 7202 ioarcb->write_ioadl_addr = 7203 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); 7204 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 7205 ioarcb->ioasa_host_pci_addr = 7206 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa)); 7207 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 7208 ipr_cmd->cmd_index = i; 7209 ipr_cmd->ioa_cfg = ioa_cfg; 7210 ipr_cmd->sense_buffer_dma = dma_addr + 7211 offsetof(struct ipr_cmnd, sense_buffer); 7212 7213 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 7214 } 7215 7216 return 0; 7217 } 7218 7219 /** 7220 * ipr_alloc_mem - Allocate memory for an adapter 7221 * @ioa_cfg: ioa config struct 7222 * 7223 * Return value: 7224 * 0 on success / non-zero for error 7225 **/ 7226 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 7227 { 7228 struct pci_dev *pdev = ioa_cfg->pdev; 7229 int i, rc = -ENOMEM; 7230 7231 ENTER; 7232 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * 7233 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL); 7234 7235 if (!ioa_cfg->res_entries) 7236 goto out; 7237 7238 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++) 7239 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 7240 7241 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, 7242 sizeof(struct ipr_misc_cbs), 7243 &ioa_cfg->vpd_cbs_dma); 7244 7245 if (!ioa_cfg->vpd_cbs) 7246 goto out_free_res_entries; 7247 7248 if (ipr_alloc_cmd_blks(ioa_cfg)) 7249 goto out_free_vpd_cbs; 7250 7251 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, 7252 sizeof(u32) * IPR_NUM_CMD_BLKS, 7253 &ioa_cfg->host_rrq_dma); 7254 7255 if (!ioa_cfg->host_rrq) 7256 goto out_ipr_free_cmd_blocks; 7257 7258 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev, 7259 sizeof(struct ipr_config_table), 7260 &ioa_cfg->cfg_table_dma); 7261 7262 if (!ioa_cfg->cfg_table) 7263 goto out_free_host_rrq; 7264 7265 for (i = 0; i < IPR_NUM_HCAMS; i++) { 7266 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, 7267 sizeof(struct ipr_hostrcb), 7268 &ioa_cfg->hostrcb_dma[i]); 7269 7270 if (!ioa_cfg->hostrcb[i]) 7271 goto out_free_hostrcb_dma; 7272 7273 ioa_cfg->hostrcb[i]->hostrcb_dma = 7274 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 7275 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg; 7276 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 7277 } 7278 7279 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * 7280 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 7281 7282 if (!ioa_cfg->trace) 7283 goto out_free_hostrcb_dma; 7284 7285 rc = 0; 7286 out: 7287 LEAVE; 7288 return rc; 7289 7290 out_free_hostrcb_dma: 7291 while (i-- > 0) { 7292 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), 7293 ioa_cfg->hostrcb[i], 7294 ioa_cfg->hostrcb_dma[i]); 7295 } 7296 pci_free_consistent(pdev, sizeof(struct ipr_config_table), 7297 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma); 7298 out_free_host_rrq: 7299 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 7300 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 7301 out_ipr_free_cmd_blocks: 7302 ipr_free_cmd_blks(ioa_cfg); 7303 out_free_vpd_cbs: 7304 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), 7305 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 7306 out_free_res_entries: 7307 kfree(ioa_cfg->res_entries); 7308 goto out; 7309 } 7310 7311 /** 7312 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 7313 * @ioa_cfg: ioa config struct 7314 * 7315 * Return value: 7316 * none 7317 **/ 7318 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 7319 { 7320 int i; 7321 7322 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 7323 ioa_cfg->bus_attr[i].bus = i; 7324 ioa_cfg->bus_attr[i].qas_enabled = 0; 7325 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 7326 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 7327 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 7328 else 7329 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 7330 } 7331 } 7332 7333 /** 7334 * ipr_init_ioa_cfg - Initialize IOA config struct 7335 * @ioa_cfg: ioa config struct 7336 * @host: scsi host struct 7337 * @pdev: PCI dev struct 7338 * 7339 * Return value: 7340 * none 7341 **/ 7342 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 7343 struct Scsi_Host *host, struct pci_dev *pdev) 7344 { 7345 const struct ipr_interrupt_offsets *p; 7346 struct ipr_interrupts *t; 7347 void __iomem *base; 7348 7349 ioa_cfg->host = host; 7350 ioa_cfg->pdev = pdev; 7351 ioa_cfg->log_level = ipr_log_level; 7352 ioa_cfg->doorbell = IPR_DOORBELL; 7353 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 7354 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 7355 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); 7356 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); 7357 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 7358 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 7359 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 7360 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 7361 7362 INIT_LIST_HEAD(&ioa_cfg->free_q); 7363 INIT_LIST_HEAD(&ioa_cfg->pending_q); 7364 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 7365 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 7366 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 7367 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 7368 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread); 7369 init_waitqueue_head(&ioa_cfg->reset_wait_q); 7370 ioa_cfg->sdt_state = INACTIVE; 7371 if (ipr_enable_cache) 7372 ioa_cfg->cache_state = CACHE_ENABLED; 7373 else 7374 ioa_cfg->cache_state = CACHE_DISABLED; 7375 7376 ipr_initialize_bus_attr(ioa_cfg); 7377 7378 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 7379 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 7380 host->max_channel = IPR_MAX_BUS_TO_SCAN; 7381 host->unique_id = host->host_no; 7382 host->max_cmd_len = IPR_MAX_CDB_LEN; 7383 pci_set_drvdata(pdev, ioa_cfg); 7384 7385 p = &ioa_cfg->chip_cfg->regs; 7386 t = &ioa_cfg->regs; 7387 base = ioa_cfg->hdw_dma_regs; 7388 7389 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 7390 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 7391 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 7392 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 7393 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 7394 t->ioarrin_reg = base + p->ioarrin_reg; 7395 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 7396 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 7397 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 7398 } 7399 7400 /** 7401 * ipr_get_chip_cfg - Find adapter chip configuration 7402 * @dev_id: PCI device id struct 7403 * 7404 * Return value: 7405 * ptr to chip config on success / NULL on failure 7406 **/ 7407 static const struct ipr_chip_cfg_t * __devinit 7408 ipr_get_chip_cfg(const struct pci_device_id *dev_id) 7409 { 7410 int i; 7411 7412 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 7413 if (ipr_chip[i].vendor == dev_id->vendor && 7414 ipr_chip[i].device == dev_id->device) 7415 return ipr_chip[i].cfg; 7416 return NULL; 7417 } 7418 7419 /** 7420 * ipr_probe_ioa - Allocates memory and does first stage of initialization 7421 * @pdev: PCI device struct 7422 * @dev_id: PCI device id struct 7423 * 7424 * Return value: 7425 * 0 on success / non-zero on failure 7426 **/ 7427 static int __devinit ipr_probe_ioa(struct pci_dev *pdev, 7428 const struct pci_device_id *dev_id) 7429 { 7430 struct ipr_ioa_cfg *ioa_cfg; 7431 struct Scsi_Host *host; 7432 unsigned long ipr_regs_pci; 7433 void __iomem *ipr_regs; 7434 int rc = PCIBIOS_SUCCESSFUL; 7435 volatile u32 mask, uproc, interrupts; 7436 7437 ENTER; 7438 7439 if ((rc = pci_enable_device(pdev))) { 7440 dev_err(&pdev->dev, "Cannot enable adapter\n"); 7441 goto out; 7442 } 7443 7444 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 7445 7446 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 7447 7448 if (!host) { 7449 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 7450 rc = -ENOMEM; 7451 goto out_disable; 7452 } 7453 7454 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 7455 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 7456 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, 7457 sata_port_info.flags, &ipr_sata_ops); 7458 7459 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id); 7460 7461 if (!ioa_cfg->chip_cfg) { 7462 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 7463 dev_id->vendor, dev_id->device); 7464 goto out_scsi_host_put; 7465 } 7466 7467 if (ipr_transop_timeout) 7468 ioa_cfg->transop_timeout = ipr_transop_timeout; 7469 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT) 7470 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT; 7471 else 7472 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT; 7473 7474 ioa_cfg->revid = pdev->revision; 7475 7476 ipr_regs_pci = pci_resource_start(pdev, 0); 7477 7478 rc = pci_request_regions(pdev, IPR_NAME); 7479 if (rc < 0) { 7480 dev_err(&pdev->dev, 7481 "Couldn't register memory range of registers\n"); 7482 goto out_scsi_host_put; 7483 } 7484 7485 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0)); 7486 7487 if (!ipr_regs) { 7488 dev_err(&pdev->dev, 7489 "Couldn't map memory range of registers\n"); 7490 rc = -ENOMEM; 7491 goto out_release_regions; 7492 } 7493 7494 ioa_cfg->hdw_dma_regs = ipr_regs; 7495 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 7496 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 7497 7498 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 7499 7500 pci_set_master(pdev); 7501 7502 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 7503 if (rc < 0) { 7504 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); 7505 goto cleanup_nomem; 7506 } 7507 7508 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 7509 ioa_cfg->chip_cfg->cache_line_size); 7510 7511 if (rc != PCIBIOS_SUCCESSFUL) { 7512 dev_err(&pdev->dev, "Write of cache line size failed\n"); 7513 rc = -EIO; 7514 goto cleanup_nomem; 7515 } 7516 7517 /* Save away PCI config space for use following IOA reset */ 7518 rc = pci_save_state(pdev); 7519 7520 if (rc != PCIBIOS_SUCCESSFUL) { 7521 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 7522 rc = -EIO; 7523 goto cleanup_nomem; 7524 } 7525 7526 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 7527 goto cleanup_nomem; 7528 7529 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 7530 goto cleanup_nomem; 7531 7532 rc = ipr_alloc_mem(ioa_cfg); 7533 if (rc < 0) { 7534 dev_err(&pdev->dev, 7535 "Couldn't allocate enough memory for device driver!\n"); 7536 goto cleanup_nomem; 7537 } 7538 7539 /* 7540 * If HRRQ updated interrupt is not masked, or reset alert is set, 7541 * the card is in an unknown state and needs a hard reset 7542 */ 7543 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7544 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg); 7545 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg); 7546 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 7547 ioa_cfg->needs_hard_reset = 1; 7548 if (interrupts & IPR_PCII_ERROR_INTERRUPTS) 7549 ioa_cfg->needs_hard_reset = 1; 7550 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED) 7551 ioa_cfg->ioa_unit_checked = 1; 7552 7553 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 7554 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg); 7555 7556 if (rc) { 7557 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 7558 pdev->irq, rc); 7559 goto cleanup_nolog; 7560 } 7561 7562 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) || 7563 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) { 7564 ioa_cfg->needs_warm_reset = 1; 7565 ioa_cfg->reset = ipr_reset_slot_reset; 7566 } else 7567 ioa_cfg->reset = ipr_reset_start_bist; 7568 7569 spin_lock(&ipr_driver_lock); 7570 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 7571 spin_unlock(&ipr_driver_lock); 7572 7573 LEAVE; 7574 out: 7575 return rc; 7576 7577 cleanup_nolog: 7578 ipr_free_mem(ioa_cfg); 7579 cleanup_nomem: 7580 iounmap(ipr_regs); 7581 out_release_regions: 7582 pci_release_regions(pdev); 7583 out_scsi_host_put: 7584 scsi_host_put(host); 7585 out_disable: 7586 pci_disable_device(pdev); 7587 goto out; 7588 } 7589 7590 /** 7591 * ipr_scan_vsets - Scans for VSET devices 7592 * @ioa_cfg: ioa config struct 7593 * 7594 * Description: Since the VSET resources do not follow SAM in that we can have 7595 * sparse LUNs with no LUN 0, we have to scan for these ourselves. 7596 * 7597 * Return value: 7598 * none 7599 **/ 7600 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) 7601 { 7602 int target, lun; 7603 7604 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) 7605 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) 7606 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); 7607 } 7608 7609 /** 7610 * ipr_initiate_ioa_bringdown - Bring down an adapter 7611 * @ioa_cfg: ioa config struct 7612 * @shutdown_type: shutdown type 7613 * 7614 * Description: This function will initiate bringing down the adapter. 7615 * This consists of issuing an IOA shutdown to the adapter 7616 * to flush the cache, and running BIST. 7617 * If the caller needs to wait on the completion of the reset, 7618 * the caller must sleep on the reset_wait_q. 7619 * 7620 * Return value: 7621 * none 7622 **/ 7623 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 7624 enum ipr_shutdown_type shutdown_type) 7625 { 7626 ENTER; 7627 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 7628 ioa_cfg->sdt_state = ABORT_DUMP; 7629 ioa_cfg->reset_retries = 0; 7630 ioa_cfg->in_ioa_bringdown = 1; 7631 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 7632 LEAVE; 7633 } 7634 7635 /** 7636 * __ipr_remove - Remove a single adapter 7637 * @pdev: pci device struct 7638 * 7639 * Adapter hot plug remove entry point. 7640 * 7641 * Return value: 7642 * none 7643 **/ 7644 static void __ipr_remove(struct pci_dev *pdev) 7645 { 7646 unsigned long host_lock_flags = 0; 7647 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7648 ENTER; 7649 7650 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7651 while(ioa_cfg->in_reset_reload) { 7652 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7653 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7654 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7655 } 7656 7657 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 7658 7659 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7660 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7661 flush_scheduled_work(); 7662 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7663 7664 spin_lock(&ipr_driver_lock); 7665 list_del(&ioa_cfg->queue); 7666 spin_unlock(&ipr_driver_lock); 7667 7668 if (ioa_cfg->sdt_state == ABORT_DUMP) 7669 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 7670 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7671 7672 ipr_free_all_resources(ioa_cfg); 7673 7674 LEAVE; 7675 } 7676 7677 /** 7678 * ipr_remove - IOA hot plug remove entry point 7679 * @pdev: pci device struct 7680 * 7681 * Adapter hot plug remove entry point. 7682 * 7683 * Return value: 7684 * none 7685 **/ 7686 static void ipr_remove(struct pci_dev *pdev) 7687 { 7688 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7689 7690 ENTER; 7691 7692 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7693 &ipr_trace_attr); 7694 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj, 7695 &ipr_dump_attr); 7696 scsi_remove_host(ioa_cfg->host); 7697 7698 __ipr_remove(pdev); 7699 7700 LEAVE; 7701 } 7702 7703 /** 7704 * ipr_probe - Adapter hot plug add entry point 7705 * 7706 * Return value: 7707 * 0 on success / non-zero on failure 7708 **/ 7709 static int __devinit ipr_probe(struct pci_dev *pdev, 7710 const struct pci_device_id *dev_id) 7711 { 7712 struct ipr_ioa_cfg *ioa_cfg; 7713 int rc; 7714 7715 rc = ipr_probe_ioa(pdev, dev_id); 7716 7717 if (rc) 7718 return rc; 7719 7720 ioa_cfg = pci_get_drvdata(pdev); 7721 rc = ipr_probe_ioa_part2(ioa_cfg); 7722 7723 if (rc) { 7724 __ipr_remove(pdev); 7725 return rc; 7726 } 7727 7728 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 7729 7730 if (rc) { 7731 __ipr_remove(pdev); 7732 return rc; 7733 } 7734 7735 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7736 &ipr_trace_attr); 7737 7738 if (rc) { 7739 scsi_remove_host(ioa_cfg->host); 7740 __ipr_remove(pdev); 7741 return rc; 7742 } 7743 7744 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj, 7745 &ipr_dump_attr); 7746 7747 if (rc) { 7748 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7749 &ipr_trace_attr); 7750 scsi_remove_host(ioa_cfg->host); 7751 __ipr_remove(pdev); 7752 return rc; 7753 } 7754 7755 scsi_scan_host(ioa_cfg->host); 7756 ipr_scan_vsets(ioa_cfg); 7757 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); 7758 ioa_cfg->allow_ml_add_del = 1; 7759 ioa_cfg->host->max_channel = IPR_VSET_BUS; 7760 schedule_work(&ioa_cfg->work_q); 7761 return 0; 7762 } 7763 7764 /** 7765 * ipr_shutdown - Shutdown handler. 7766 * @pdev: pci device struct 7767 * 7768 * This function is invoked upon system shutdown/reboot. It will issue 7769 * an adapter shutdown to the adapter to flush the write cache. 7770 * 7771 * Return value: 7772 * none 7773 **/ 7774 static void ipr_shutdown(struct pci_dev *pdev) 7775 { 7776 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7777 unsigned long lock_flags = 0; 7778 7779 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 7780 while(ioa_cfg->in_reset_reload) { 7781 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 7782 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7783 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 7784 } 7785 7786 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 7787 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 7788 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7789 } 7790 7791 static struct pci_device_id ipr_pci_table[] __devinitdata = { 7792 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7793 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 }, 7794 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7795 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 }, 7796 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7797 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 }, 7798 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7799 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 }, 7800 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7801 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 }, 7802 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7803 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 }, 7804 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7805 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 }, 7806 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7807 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 7808 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7809 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7810 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 7811 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7812 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 7813 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7814 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7815 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 7816 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7817 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7818 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 7819 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7820 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 7821 IPR_USE_LONG_TRANSOP_TIMEOUT}, 7822 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7823 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 7824 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7825 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7826 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 7827 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7828 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7829 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0, 7830 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7831 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7832 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 }, 7833 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7834 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 7835 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET }, 7836 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 7837 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 }, 7838 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7839 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 }, 7840 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7841 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 7842 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7843 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7844 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 7845 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7846 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E, 7847 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 7848 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7849 { } 7850 }; 7851 MODULE_DEVICE_TABLE(pci, ipr_pci_table); 7852 7853 static struct pci_error_handlers ipr_err_handler = { 7854 .error_detected = ipr_pci_error_detected, 7855 .slot_reset = ipr_pci_slot_reset, 7856 }; 7857 7858 static struct pci_driver ipr_driver = { 7859 .name = IPR_NAME, 7860 .id_table = ipr_pci_table, 7861 .probe = ipr_probe, 7862 .remove = ipr_remove, 7863 .shutdown = ipr_shutdown, 7864 .err_handler = &ipr_err_handler, 7865 .dynids.use_driver_data = 1 7866 }; 7867 7868 /** 7869 * ipr_init - Module entry point 7870 * 7871 * Return value: 7872 * 0 on success / negative value on failure 7873 **/ 7874 static int __init ipr_init(void) 7875 { 7876 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 7877 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 7878 7879 return pci_register_driver(&ipr_driver); 7880 } 7881 7882 /** 7883 * ipr_exit - Module unload 7884 * 7885 * Module unload entry point. 7886 * 7887 * Return value: 7888 * none 7889 **/ 7890 static void __exit ipr_exit(void) 7891 { 7892 pci_unregister_driver(&ipr_driver); 7893 } 7894 7895 module_init(ipr_init); 7896 module_exit(ipr_exit); 7897