Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * ipr.c -- driver for IBM Power Linux RAID adapters |
| 3 | * |
| 4 | * Written By: Brian King <brking@us.ibm.com>, IBM Corporation |
| 5 | * |
| 6 | * Copyright (C) 2003, 2004 IBM Corporation |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * Notes: |
| 26 | * |
| 27 | * This driver is used to control the following SCSI adapters: |
| 28 | * |
| 29 | * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B |
| 30 | * |
| 31 | * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter |
| 32 | * PCI-X Dual Channel Ultra 320 SCSI Adapter |
| 33 | * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card |
| 34 | * Embedded SCSI adapter on p615 and p655 systems |
| 35 | * |
| 36 | * Supported Hardware Features: |
| 37 | * - Ultra 320 SCSI controller |
| 38 | * - PCI-X host interface |
| 39 | * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine |
| 40 | * - Non-Volatile Write Cache |
| 41 | * - Supports attachment of non-RAID disks, tape, and optical devices |
| 42 | * - RAID Levels 0, 5, 10 |
| 43 | * - Hot spare |
| 44 | * - Background Parity Checking |
| 45 | * - Background Data Scrubbing |
| 46 | * - Ability to increase the capacity of an existing RAID 5 disk array |
| 47 | * by adding disks |
| 48 | * |
| 49 | * Driver Features: |
| 50 | * - Tagged command queuing |
| 51 | * - Adapter microcode download |
| 52 | * - PCI hot plug |
| 53 | * - SCSI device hot plug |
| 54 | * |
| 55 | */ |
| 56 | |
| 57 | #include <linux/config.h> |
| 58 | #include <linux/fs.h> |
| 59 | #include <linux/init.h> |
| 60 | #include <linux/types.h> |
| 61 | #include <linux/errno.h> |
| 62 | #include <linux/kernel.h> |
| 63 | #include <linux/ioport.h> |
| 64 | #include <linux/delay.h> |
| 65 | #include <linux/pci.h> |
| 66 | #include <linux/wait.h> |
| 67 | #include <linux/spinlock.h> |
| 68 | #include <linux/sched.h> |
| 69 | #include <linux/interrupt.h> |
| 70 | #include <linux/blkdev.h> |
| 71 | #include <linux/firmware.h> |
| 72 | #include <linux/module.h> |
| 73 | #include <linux/moduleparam.h> |
| 74 | #include <asm/io.h> |
| 75 | #include <asm/irq.h> |
| 76 | #include <asm/processor.h> |
| 77 | #include <scsi/scsi.h> |
| 78 | #include <scsi/scsi_host.h> |
| 79 | #include <scsi/scsi_tcq.h> |
| 80 | #include <scsi/scsi_eh.h> |
| 81 | #include <scsi/scsi_cmnd.h> |
| 82 | #include <scsi/scsi_request.h> |
| 83 | #include "ipr.h" |
| 84 | |
| 85 | /* |
| 86 | * Global Data |
| 87 | */ |
| 88 | static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head); |
| 89 | static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL; |
| 90 | static unsigned int ipr_max_speed = 1; |
| 91 | static int ipr_testmode = 0; |
| 92 | static unsigned int ipr_fastfail = 0; |
| 93 | static unsigned int ipr_transop_timeout = IPR_OPERATIONAL_TIMEOUT; |
| 94 | static DEFINE_SPINLOCK(ipr_driver_lock); |
| 95 | |
| 96 | /* This table describes the differences between DMA controller chips */ |
| 97 | static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { |
| 98 | { /* Gemstone and Citrine */ |
| 99 | .mailbox = 0x0042C, |
| 100 | .cache_line_size = 0x20, |
| 101 | { |
| 102 | .set_interrupt_mask_reg = 0x0022C, |
| 103 | .clr_interrupt_mask_reg = 0x00230, |
| 104 | .sense_interrupt_mask_reg = 0x0022C, |
| 105 | .clr_interrupt_reg = 0x00228, |
| 106 | .sense_interrupt_reg = 0x00224, |
| 107 | .ioarrin_reg = 0x00404, |
| 108 | .sense_uproc_interrupt_reg = 0x00214, |
| 109 | .set_uproc_interrupt_reg = 0x00214, |
| 110 | .clr_uproc_interrupt_reg = 0x00218 |
| 111 | } |
| 112 | }, |
| 113 | { /* Snipe and Scamp */ |
| 114 | .mailbox = 0x0052C, |
| 115 | .cache_line_size = 0x20, |
| 116 | { |
| 117 | .set_interrupt_mask_reg = 0x00288, |
| 118 | .clr_interrupt_mask_reg = 0x0028C, |
| 119 | .sense_interrupt_mask_reg = 0x00288, |
| 120 | .clr_interrupt_reg = 0x00284, |
| 121 | .sense_interrupt_reg = 0x00280, |
| 122 | .ioarrin_reg = 0x00504, |
| 123 | .sense_uproc_interrupt_reg = 0x00290, |
| 124 | .set_uproc_interrupt_reg = 0x00290, |
| 125 | .clr_uproc_interrupt_reg = 0x00294 |
| 126 | } |
| 127 | }, |
| 128 | }; |
| 129 | |
| 130 | static const struct ipr_chip_t ipr_chip[] = { |
| 131 | { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] }, |
| 132 | { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] }, |
| 133 | { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] }, |
| 134 | { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] } |
| 135 | }; |
| 136 | |
| 137 | static int ipr_max_bus_speeds [] = { |
| 138 | IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE |
| 139 | }; |
| 140 | |
| 141 | MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); |
| 142 | MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); |
| 143 | module_param_named(max_speed, ipr_max_speed, uint, 0); |
| 144 | MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); |
| 145 | module_param_named(log_level, ipr_log_level, uint, 0); |
| 146 | MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); |
| 147 | module_param_named(testmode, ipr_testmode, int, 0); |
| 148 | MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); |
| 149 | module_param_named(fastfail, ipr_fastfail, int, 0); |
| 150 | MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); |
| 151 | module_param_named(transop_timeout, ipr_transop_timeout, int, 0); |
| 152 | MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); |
| 153 | MODULE_LICENSE("GPL"); |
| 154 | MODULE_VERSION(IPR_DRIVER_VERSION); |
| 155 | |
| 156 | static const char *ipr_gpdd_dev_end_states[] = { |
| 157 | "Command complete", |
| 158 | "Terminated by host", |
| 159 | "Terminated by device reset", |
| 160 | "Terminated by bus reset", |
| 161 | "Unknown", |
| 162 | "Command not started" |
| 163 | }; |
| 164 | |
| 165 | static const char *ipr_gpdd_dev_bus_phases[] = { |
| 166 | "Bus free", |
| 167 | "Arbitration", |
| 168 | "Selection", |
| 169 | "Message out", |
| 170 | "Command", |
| 171 | "Message in", |
| 172 | "Data out", |
| 173 | "Data in", |
| 174 | "Status", |
| 175 | "Reselection", |
| 176 | "Unknown" |
| 177 | }; |
| 178 | |
| 179 | /* A constant array of IOASCs/URCs/Error Messages */ |
| 180 | static const |
| 181 | struct ipr_error_table_t ipr_error_table[] = { |
| 182 | {0x00000000, 1, 1, |
| 183 | "8155: An unknown error was received"}, |
| 184 | {0x00330000, 0, 0, |
| 185 | "Soft underlength error"}, |
| 186 | {0x005A0000, 0, 0, |
| 187 | "Command to be cancelled not found"}, |
| 188 | {0x00808000, 0, 0, |
| 189 | "Qualified success"}, |
| 190 | {0x01080000, 1, 1, |
| 191 | "FFFE: Soft device bus error recovered by the IOA"}, |
| 192 | {0x01170600, 0, 1, |
| 193 | "FFF9: Device sector reassign successful"}, |
| 194 | {0x01170900, 0, 1, |
| 195 | "FFF7: Media error recovered by device rewrite procedures"}, |
| 196 | {0x01180200, 0, 1, |
| 197 | "7001: IOA sector reassignment successful"}, |
| 198 | {0x01180500, 0, 1, |
| 199 | "FFF9: Soft media error. Sector reassignment recommended"}, |
| 200 | {0x01180600, 0, 1, |
| 201 | "FFF7: Media error recovered by IOA rewrite procedures"}, |
| 202 | {0x01418000, 0, 1, |
| 203 | "FF3D: Soft PCI bus error recovered by the IOA"}, |
| 204 | {0x01440000, 1, 1, |
| 205 | "FFF6: Device hardware error recovered by the IOA"}, |
| 206 | {0x01448100, 0, 1, |
| 207 | "FFF6: Device hardware error recovered by the device"}, |
| 208 | {0x01448200, 1, 1, |
| 209 | "FF3D: Soft IOA error recovered by the IOA"}, |
| 210 | {0x01448300, 0, 1, |
| 211 | "FFFA: Undefined device response recovered by the IOA"}, |
| 212 | {0x014A0000, 1, 1, |
| 213 | "FFF6: Device bus error, message or command phase"}, |
| 214 | {0x015D0000, 0, 1, |
| 215 | "FFF6: Failure prediction threshold exceeded"}, |
| 216 | {0x015D9200, 0, 1, |
| 217 | "8009: Impending cache battery pack failure"}, |
| 218 | {0x02040400, 0, 0, |
| 219 | "34FF: Disk device format in progress"}, |
| 220 | {0x023F0000, 0, 0, |
| 221 | "Synchronization required"}, |
| 222 | {0x024E0000, 0, 0, |
| 223 | "No ready, IOA shutdown"}, |
| 224 | {0x025A0000, 0, 0, |
| 225 | "Not ready, IOA has been shutdown"}, |
| 226 | {0x02670100, 0, 1, |
| 227 | "3020: Storage subsystem configuration error"}, |
| 228 | {0x03110B00, 0, 0, |
| 229 | "FFF5: Medium error, data unreadable, recommend reassign"}, |
| 230 | {0x03110C00, 0, 0, |
| 231 | "7000: Medium error, data unreadable, do not reassign"}, |
| 232 | {0x03310000, 0, 1, |
| 233 | "FFF3: Disk media format bad"}, |
| 234 | {0x04050000, 0, 1, |
| 235 | "3002: Addressed device failed to respond to selection"}, |
| 236 | {0x04080000, 1, 1, |
| 237 | "3100: Device bus error"}, |
| 238 | {0x04080100, 0, 1, |
| 239 | "3109: IOA timed out a device command"}, |
| 240 | {0x04088000, 0, 0, |
| 241 | "3120: SCSI bus is not operational"}, |
| 242 | {0x04118000, 0, 1, |
| 243 | "9000: IOA reserved area data check"}, |
| 244 | {0x04118100, 0, 1, |
| 245 | "9001: IOA reserved area invalid data pattern"}, |
| 246 | {0x04118200, 0, 1, |
| 247 | "9002: IOA reserved area LRC error"}, |
| 248 | {0x04320000, 0, 1, |
| 249 | "102E: Out of alternate sectors for disk storage"}, |
| 250 | {0x04330000, 1, 1, |
| 251 | "FFF4: Data transfer underlength error"}, |
| 252 | {0x04338000, 1, 1, |
| 253 | "FFF4: Data transfer overlength error"}, |
| 254 | {0x043E0100, 0, 1, |
| 255 | "3400: Logical unit failure"}, |
| 256 | {0x04408500, 0, 1, |
| 257 | "FFF4: Device microcode is corrupt"}, |
| 258 | {0x04418000, 1, 1, |
| 259 | "8150: PCI bus error"}, |
| 260 | {0x04430000, 1, 0, |
| 261 | "Unsupported device bus message received"}, |
| 262 | {0x04440000, 1, 1, |
| 263 | "FFF4: Disk device problem"}, |
| 264 | {0x04448200, 1, 1, |
| 265 | "8150: Permanent IOA failure"}, |
| 266 | {0x04448300, 0, 1, |
| 267 | "3010: Disk device returned wrong response to IOA"}, |
| 268 | {0x04448400, 0, 1, |
| 269 | "8151: IOA microcode error"}, |
| 270 | {0x04448500, 0, 0, |
| 271 | "Device bus status error"}, |
| 272 | {0x04448600, 0, 1, |
| 273 | "8157: IOA error requiring IOA reset to recover"}, |
| 274 | {0x04490000, 0, 0, |
| 275 | "Message reject received from the device"}, |
| 276 | {0x04449200, 0, 1, |
| 277 | "8008: A permanent cache battery pack failure occurred"}, |
| 278 | {0x0444A000, 0, 1, |
| 279 | "9090: Disk unit has been modified after the last known status"}, |
| 280 | {0x0444A200, 0, 1, |
| 281 | "9081: IOA detected device error"}, |
| 282 | {0x0444A300, 0, 1, |
| 283 | "9082: IOA detected device error"}, |
| 284 | {0x044A0000, 1, 1, |
| 285 | "3110: Device bus error, message or command phase"}, |
| 286 | {0x04670400, 0, 1, |
| 287 | "9091: Incorrect hardware configuration change has been detected"}, |
| 288 | {0x046E0000, 0, 1, |
| 289 | "FFF4: Command to logical unit failed"}, |
| 290 | {0x05240000, 1, 0, |
| 291 | "Illegal request, invalid request type or request packet"}, |
| 292 | {0x05250000, 0, 0, |
| 293 | "Illegal request, invalid resource handle"}, |
| 294 | {0x05260000, 0, 0, |
| 295 | "Illegal request, invalid field in parameter list"}, |
| 296 | {0x05260100, 0, 0, |
| 297 | "Illegal request, parameter not supported"}, |
| 298 | {0x05260200, 0, 0, |
| 299 | "Illegal request, parameter value invalid"}, |
| 300 | {0x052C0000, 0, 0, |
| 301 | "Illegal request, command sequence error"}, |
| 302 | {0x06040500, 0, 1, |
| 303 | "9031: Array protection temporarily suspended, protection resuming"}, |
| 304 | {0x06040600, 0, 1, |
| 305 | "9040: Array protection temporarily suspended, protection resuming"}, |
| 306 | {0x06290000, 0, 1, |
| 307 | "FFFB: SCSI bus was reset"}, |
| 308 | {0x06290500, 0, 0, |
| 309 | "FFFE: SCSI bus transition to single ended"}, |
| 310 | {0x06290600, 0, 0, |
| 311 | "FFFE: SCSI bus transition to LVD"}, |
| 312 | {0x06298000, 0, 1, |
| 313 | "FFFB: SCSI bus was reset by another initiator"}, |
| 314 | {0x063F0300, 0, 1, |
| 315 | "3029: A device replacement has occurred"}, |
| 316 | {0x064C8000, 0, 1, |
| 317 | "9051: IOA cache data exists for a missing or failed device"}, |
| 318 | {0x06670100, 0, 1, |
| 319 | "9025: Disk unit is not supported at its physical location"}, |
| 320 | {0x06670600, 0, 1, |
| 321 | "3020: IOA detected a SCSI bus configuration error"}, |
| 322 | {0x06678000, 0, 1, |
| 323 | "3150: SCSI bus configuration error"}, |
| 324 | {0x06690200, 0, 1, |
| 325 | "9041: Array protection temporarily suspended"}, |
| 326 | {0x06698200, 0, 1, |
| 327 | "9042: Corrupt array parity detected on specified device"}, |
| 328 | {0x066B0200, 0, 1, |
| 329 | "9030: Array no longer protected due to missing or failed disk unit"}, |
| 330 | {0x066B8200, 0, 1, |
| 331 | "9032: Array exposed but still protected"}, |
| 332 | {0x07270000, 0, 0, |
| 333 | "Failure due to other device"}, |
| 334 | {0x07278000, 0, 1, |
| 335 | "9008: IOA does not support functions expected by devices"}, |
| 336 | {0x07278100, 0, 1, |
| 337 | "9010: Cache data associated with attached devices cannot be found"}, |
| 338 | {0x07278200, 0, 1, |
| 339 | "9011: Cache data belongs to devices other than those attached"}, |
| 340 | {0x07278400, 0, 1, |
| 341 | "9020: Array missing 2 or more devices with only 1 device present"}, |
| 342 | {0x07278500, 0, 1, |
| 343 | "9021: Array missing 2 or more devices with 2 or more devices present"}, |
| 344 | {0x07278600, 0, 1, |
| 345 | "9022: Exposed array is missing a required device"}, |
| 346 | {0x07278700, 0, 1, |
| 347 | "9023: Array member(s) not at required physical locations"}, |
| 348 | {0x07278800, 0, 1, |
| 349 | "9024: Array not functional due to present hardware configuration"}, |
| 350 | {0x07278900, 0, 1, |
| 351 | "9026: Array not functional due to present hardware configuration"}, |
| 352 | {0x07278A00, 0, 1, |
| 353 | "9027: Array is missing a device and parity is out of sync"}, |
| 354 | {0x07278B00, 0, 1, |
| 355 | "9028: Maximum number of arrays already exist"}, |
| 356 | {0x07278C00, 0, 1, |
| 357 | "9050: Required cache data cannot be located for a disk unit"}, |
| 358 | {0x07278D00, 0, 1, |
| 359 | "9052: Cache data exists for a device that has been modified"}, |
| 360 | {0x07278F00, 0, 1, |
| 361 | "9054: IOA resources not available due to previous problems"}, |
| 362 | {0x07279100, 0, 1, |
| 363 | "9092: Disk unit requires initialization before use"}, |
| 364 | {0x07279200, 0, 1, |
| 365 | "9029: Incorrect hardware configuration change has been detected"}, |
| 366 | {0x07279600, 0, 1, |
| 367 | "9060: One or more disk pairs are missing from an array"}, |
| 368 | {0x07279700, 0, 1, |
| 369 | "9061: One or more disks are missing from an array"}, |
| 370 | {0x07279800, 0, 1, |
| 371 | "9062: One or more disks are missing from an array"}, |
| 372 | {0x07279900, 0, 1, |
| 373 | "9063: Maximum number of functional arrays has been exceeded"}, |
| 374 | {0x0B260000, 0, 0, |
| 375 | "Aborted command, invalid descriptor"}, |
| 376 | {0x0B5A0000, 0, 0, |
| 377 | "Command terminated by host"} |
| 378 | }; |
| 379 | |
| 380 | static const struct ipr_ses_table_entry ipr_ses_table[] = { |
| 381 | { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, |
| 382 | { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, |
| 383 | { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ |
| 384 | { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ |
| 385 | { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ |
| 386 | { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ |
| 387 | { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, |
| 388 | { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, |
| 389 | { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, |
| 390 | { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, |
| 391 | { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, |
| 392 | { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, |
| 393 | { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } |
| 394 | }; |
| 395 | |
| 396 | /* |
| 397 | * Function Prototypes |
| 398 | */ |
| 399 | static int ipr_reset_alert(struct ipr_cmnd *); |
| 400 | static void ipr_process_ccn(struct ipr_cmnd *); |
| 401 | static void ipr_process_error(struct ipr_cmnd *); |
| 402 | static void ipr_reset_ioa_job(struct ipr_cmnd *); |
| 403 | static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, |
| 404 | enum ipr_shutdown_type); |
| 405 | |
| 406 | #ifdef CONFIG_SCSI_IPR_TRACE |
| 407 | /** |
| 408 | * ipr_trc_hook - Add a trace entry to the driver trace |
| 409 | * @ipr_cmd: ipr command struct |
| 410 | * @type: trace type |
| 411 | * @add_data: additional data |
| 412 | * |
| 413 | * Return value: |
| 414 | * none |
| 415 | **/ |
| 416 | static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, |
| 417 | u8 type, u32 add_data) |
| 418 | { |
| 419 | struct ipr_trace_entry *trace_entry; |
| 420 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 421 | |
| 422 | trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++]; |
| 423 | trace_entry->time = jiffies; |
| 424 | trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; |
| 425 | trace_entry->type = type; |
| 426 | trace_entry->cmd_index = ipr_cmd->cmd_index; |
| 427 | trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; |
| 428 | trace_entry->u.add_data = add_data; |
| 429 | } |
| 430 | #else |
| 431 | #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0) |
| 432 | #endif |
| 433 | |
| 434 | /** |
| 435 | * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse |
| 436 | * @ipr_cmd: ipr command struct |
| 437 | * |
| 438 | * Return value: |
| 439 | * none |
| 440 | **/ |
| 441 | static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) |
| 442 | { |
| 443 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| 444 | struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; |
| 445 | |
| 446 | memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); |
| 447 | ioarcb->write_data_transfer_length = 0; |
| 448 | ioarcb->read_data_transfer_length = 0; |
| 449 | ioarcb->write_ioadl_len = 0; |
| 450 | ioarcb->read_ioadl_len = 0; |
| 451 | ioasa->ioasc = 0; |
| 452 | ioasa->residual_data_len = 0; |
| 453 | |
| 454 | ipr_cmd->scsi_cmd = NULL; |
| 455 | ipr_cmd->sense_buffer[0] = 0; |
| 456 | ipr_cmd->dma_use_sg = 0; |
| 457 | } |
| 458 | |
| 459 | /** |
| 460 | * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block |
| 461 | * @ipr_cmd: ipr command struct |
| 462 | * |
| 463 | * Return value: |
| 464 | * none |
| 465 | **/ |
| 466 | static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd) |
| 467 | { |
| 468 | ipr_reinit_ipr_cmnd(ipr_cmd); |
| 469 | ipr_cmd->u.scratch = 0; |
| 470 | ipr_cmd->sibling = NULL; |
| 471 | init_timer(&ipr_cmd->timer); |
| 472 | } |
| 473 | |
| 474 | /** |
| 475 | * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block |
| 476 | * @ioa_cfg: ioa config struct |
| 477 | * |
| 478 | * Return value: |
| 479 | * pointer to ipr command struct |
| 480 | **/ |
| 481 | static |
| 482 | struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) |
| 483 | { |
| 484 | struct ipr_cmnd *ipr_cmd; |
| 485 | |
| 486 | ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue); |
| 487 | list_del(&ipr_cmd->queue); |
| 488 | ipr_init_ipr_cmnd(ipr_cmd); |
| 489 | |
| 490 | return ipr_cmd; |
| 491 | } |
| 492 | |
| 493 | /** |
| 494 | * ipr_unmap_sglist - Unmap scatterlist if mapped |
| 495 | * @ioa_cfg: ioa config struct |
| 496 | * @ipr_cmd: ipr command struct |
| 497 | * |
| 498 | * Return value: |
| 499 | * nothing |
| 500 | **/ |
| 501 | static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg, |
| 502 | struct ipr_cmnd *ipr_cmd) |
| 503 | { |
| 504 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; |
| 505 | |
| 506 | if (ipr_cmd->dma_use_sg) { |
| 507 | if (scsi_cmd->use_sg > 0) { |
| 508 | pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer, |
| 509 | scsi_cmd->use_sg, |
| 510 | scsi_cmd->sc_data_direction); |
| 511 | } else { |
| 512 | pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle, |
| 513 | scsi_cmd->request_bufflen, |
| 514 | scsi_cmd->sc_data_direction); |
| 515 | } |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | /** |
| 520 | * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts |
| 521 | * @ioa_cfg: ioa config struct |
| 522 | * @clr_ints: interrupts to clear |
| 523 | * |
| 524 | * This function masks all interrupts on the adapter, then clears the |
| 525 | * interrupts specified in the mask |
| 526 | * |
| 527 | * Return value: |
| 528 | * none |
| 529 | **/ |
| 530 | static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, |
| 531 | u32 clr_ints) |
| 532 | { |
| 533 | volatile u32 int_reg; |
| 534 | |
| 535 | /* Stop new interrupts */ |
| 536 | ioa_cfg->allow_interrupts = 0; |
| 537 | |
| 538 | /* Set interrupt mask to stop all new interrupts */ |
| 539 | writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); |
| 540 | |
| 541 | /* Clear any pending interrupts */ |
| 542 | writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg); |
| 543 | int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); |
| 544 | } |
| 545 | |
| 546 | /** |
| 547 | * ipr_save_pcix_cmd_reg - Save PCI-X command register |
| 548 | * @ioa_cfg: ioa config struct |
| 549 | * |
| 550 | * Return value: |
| 551 | * 0 on success / -EIO on failure |
| 552 | **/ |
| 553 | static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) |
| 554 | { |
| 555 | int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); |
| 556 | |
| 557 | if (pcix_cmd_reg == 0) { |
| 558 | dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); |
| 559 | return -EIO; |
| 560 | } |
| 561 | |
| 562 | if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, |
| 563 | &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { |
| 564 | dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); |
| 565 | return -EIO; |
| 566 | } |
| 567 | |
| 568 | ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; |
| 569 | return 0; |
| 570 | } |
| 571 | |
| 572 | /** |
| 573 | * ipr_set_pcix_cmd_reg - Setup PCI-X command register |
| 574 | * @ioa_cfg: ioa config struct |
| 575 | * |
| 576 | * Return value: |
| 577 | * 0 on success / -EIO on failure |
| 578 | **/ |
| 579 | static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) |
| 580 | { |
| 581 | int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); |
| 582 | |
| 583 | if (pcix_cmd_reg) { |
| 584 | if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, |
| 585 | ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { |
| 586 | dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); |
| 587 | return -EIO; |
| 588 | } |
| 589 | } else { |
| 590 | dev_err(&ioa_cfg->pdev->dev, |
| 591 | "Failed to setup PCI-X command register\n"); |
| 592 | return -EIO; |
| 593 | } |
| 594 | |
| 595 | return 0; |
| 596 | } |
| 597 | |
| 598 | /** |
| 599 | * ipr_scsi_eh_done - mid-layer done function for aborted ops |
| 600 | * @ipr_cmd: ipr command struct |
| 601 | * |
| 602 | * This function is invoked by the interrupt handler for |
| 603 | * ops generated by the SCSI mid-layer which are being aborted. |
| 604 | * |
| 605 | * Return value: |
| 606 | * none |
| 607 | **/ |
| 608 | static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) |
| 609 | { |
| 610 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 611 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; |
| 612 | |
| 613 | scsi_cmd->result |= (DID_ERROR << 16); |
| 614 | |
| 615 | ipr_unmap_sglist(ioa_cfg, ipr_cmd); |
| 616 | scsi_cmd->scsi_done(scsi_cmd); |
| 617 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| 618 | } |
| 619 | |
| 620 | /** |
| 621 | * ipr_fail_all_ops - Fails all outstanding ops. |
| 622 | * @ioa_cfg: ioa config struct |
| 623 | * |
| 624 | * This function fails all outstanding ops. |
| 625 | * |
| 626 | * Return value: |
| 627 | * none |
| 628 | **/ |
| 629 | static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) |
| 630 | { |
| 631 | struct ipr_cmnd *ipr_cmd, *temp; |
| 632 | |
| 633 | ENTER; |
| 634 | list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) { |
| 635 | list_del(&ipr_cmd->queue); |
| 636 | |
| 637 | ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); |
| 638 | ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID); |
| 639 | |
| 640 | if (ipr_cmd->scsi_cmd) |
| 641 | ipr_cmd->done = ipr_scsi_eh_done; |
| 642 | |
| 643 | ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET); |
| 644 | del_timer(&ipr_cmd->timer); |
| 645 | ipr_cmd->done(ipr_cmd); |
| 646 | } |
| 647 | |
| 648 | LEAVE; |
| 649 | } |
| 650 | |
| 651 | /** |
| 652 | * ipr_do_req - Send driver initiated requests. |
| 653 | * @ipr_cmd: ipr command struct |
| 654 | * @done: done function |
| 655 | * @timeout_func: timeout function |
| 656 | * @timeout: timeout value |
| 657 | * |
| 658 | * This function sends the specified command to the adapter with the |
| 659 | * timeout given. The done function is invoked on command completion. |
| 660 | * |
| 661 | * Return value: |
| 662 | * none |
| 663 | **/ |
| 664 | static void ipr_do_req(struct ipr_cmnd *ipr_cmd, |
| 665 | void (*done) (struct ipr_cmnd *), |
| 666 | void (*timeout_func) (struct ipr_cmnd *), u32 timeout) |
| 667 | { |
| 668 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 669 | |
| 670 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); |
| 671 | |
| 672 | ipr_cmd->done = done; |
| 673 | |
| 674 | ipr_cmd->timer.data = (unsigned long) ipr_cmd; |
| 675 | ipr_cmd->timer.expires = jiffies + timeout; |
| 676 | ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func; |
| 677 | |
| 678 | add_timer(&ipr_cmd->timer); |
| 679 | |
| 680 | ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); |
| 681 | |
| 682 | mb(); |
| 683 | writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), |
| 684 | ioa_cfg->regs.ioarrin_reg); |
| 685 | } |
| 686 | |
| 687 | /** |
| 688 | * ipr_internal_cmd_done - Op done function for an internally generated op. |
| 689 | * @ipr_cmd: ipr command struct |
| 690 | * |
| 691 | * This function is the op done function for an internally generated, |
| 692 | * blocking op. It simply wakes the sleeping thread. |
| 693 | * |
| 694 | * Return value: |
| 695 | * none |
| 696 | **/ |
| 697 | static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) |
| 698 | { |
| 699 | if (ipr_cmd->sibling) |
| 700 | ipr_cmd->sibling = NULL; |
| 701 | else |
| 702 | complete(&ipr_cmd->completion); |
| 703 | } |
| 704 | |
| 705 | /** |
| 706 | * ipr_send_blocking_cmd - Send command and sleep on its completion. |
| 707 | * @ipr_cmd: ipr command struct |
| 708 | * @timeout_func: function to invoke if command times out |
| 709 | * @timeout: timeout |
| 710 | * |
| 711 | * Return value: |
| 712 | * none |
| 713 | **/ |
| 714 | static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, |
| 715 | void (*timeout_func) (struct ipr_cmnd *ipr_cmd), |
| 716 | u32 timeout) |
| 717 | { |
| 718 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 719 | |
| 720 | init_completion(&ipr_cmd->completion); |
| 721 | ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); |
| 722 | |
| 723 | spin_unlock_irq(ioa_cfg->host->host_lock); |
| 724 | wait_for_completion(&ipr_cmd->completion); |
| 725 | spin_lock_irq(ioa_cfg->host->host_lock); |
| 726 | } |
| 727 | |
| 728 | /** |
| 729 | * ipr_send_hcam - Send an HCAM to the adapter. |
| 730 | * @ioa_cfg: ioa config struct |
| 731 | * @type: HCAM type |
| 732 | * @hostrcb: hostrcb struct |
| 733 | * |
| 734 | * This function will send a Host Controlled Async command to the adapter. |
| 735 | * If HCAMs are currently not allowed to be issued to the adapter, it will |
| 736 | * place the hostrcb on the free queue. |
| 737 | * |
| 738 | * Return value: |
| 739 | * none |
| 740 | **/ |
| 741 | static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, |
| 742 | struct ipr_hostrcb *hostrcb) |
| 743 | { |
| 744 | struct ipr_cmnd *ipr_cmd; |
| 745 | struct ipr_ioarcb *ioarcb; |
| 746 | |
| 747 | if (ioa_cfg->allow_cmds) { |
| 748 | ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); |
| 749 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); |
| 750 | list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); |
| 751 | |
| 752 | ipr_cmd->u.hostrcb = hostrcb; |
| 753 | ioarcb = &ipr_cmd->ioarcb; |
| 754 | |
| 755 | ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); |
| 756 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; |
| 757 | ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; |
| 758 | ioarcb->cmd_pkt.cdb[1] = type; |
| 759 | ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; |
| 760 | ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; |
| 761 | |
| 762 | ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam)); |
| 763 | ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| 764 | ipr_cmd->ioadl[0].flags_and_data_len = |
| 765 | cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam)); |
| 766 | ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma); |
| 767 | |
| 768 | if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) |
| 769 | ipr_cmd->done = ipr_process_ccn; |
| 770 | else |
| 771 | ipr_cmd->done = ipr_process_error; |
| 772 | |
| 773 | ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); |
| 774 | |
| 775 | mb(); |
| 776 | writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), |
| 777 | ioa_cfg->regs.ioarrin_reg); |
| 778 | } else { |
| 779 | list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); |
| 780 | } |
| 781 | } |
| 782 | |
| 783 | /** |
| 784 | * ipr_init_res_entry - Initialize a resource entry struct. |
| 785 | * @res: resource entry struct |
| 786 | * |
| 787 | * Return value: |
| 788 | * none |
| 789 | **/ |
| 790 | static void ipr_init_res_entry(struct ipr_resource_entry *res) |
| 791 | { |
| 792 | res->needs_sync_complete = 1; |
| 793 | res->in_erp = 0; |
| 794 | res->add_to_ml = 0; |
| 795 | res->del_from_ml = 0; |
| 796 | res->resetting_device = 0; |
| 797 | res->sdev = NULL; |
| 798 | } |
| 799 | |
| 800 | /** |
| 801 | * ipr_handle_config_change - Handle a config change from the adapter |
| 802 | * @ioa_cfg: ioa config struct |
| 803 | * @hostrcb: hostrcb |
| 804 | * |
| 805 | * Return value: |
| 806 | * none |
| 807 | **/ |
| 808 | static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, |
| 809 | struct ipr_hostrcb *hostrcb) |
| 810 | { |
| 811 | struct ipr_resource_entry *res = NULL; |
| 812 | struct ipr_config_table_entry *cfgte; |
| 813 | u32 is_ndn = 1; |
| 814 | |
| 815 | cfgte = &hostrcb->hcam.u.ccn.cfgte; |
| 816 | |
| 817 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { |
| 818 | if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr, |
| 819 | sizeof(cfgte->res_addr))) { |
| 820 | is_ndn = 0; |
| 821 | break; |
| 822 | } |
| 823 | } |
| 824 | |
| 825 | if (is_ndn) { |
| 826 | if (list_empty(&ioa_cfg->free_res_q)) { |
| 827 | ipr_send_hcam(ioa_cfg, |
| 828 | IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, |
| 829 | hostrcb); |
| 830 | return; |
| 831 | } |
| 832 | |
| 833 | res = list_entry(ioa_cfg->free_res_q.next, |
| 834 | struct ipr_resource_entry, queue); |
| 835 | |
| 836 | list_del(&res->queue); |
| 837 | ipr_init_res_entry(res); |
| 838 | list_add_tail(&res->queue, &ioa_cfg->used_res_q); |
| 839 | } |
| 840 | |
| 841 | memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); |
| 842 | |
| 843 | if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { |
| 844 | if (res->sdev) { |
| 845 | res->sdev->hostdata = NULL; |
| 846 | res->del_from_ml = 1; |
| 847 | if (ioa_cfg->allow_ml_add_del) |
| 848 | schedule_work(&ioa_cfg->work_q); |
| 849 | } else |
| 850 | list_move_tail(&res->queue, &ioa_cfg->free_res_q); |
| 851 | } else if (!res->sdev) { |
| 852 | res->add_to_ml = 1; |
| 853 | if (ioa_cfg->allow_ml_add_del) |
| 854 | schedule_work(&ioa_cfg->work_q); |
| 855 | } |
| 856 | |
| 857 | ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); |
| 858 | } |
| 859 | |
| 860 | /** |
| 861 | * ipr_process_ccn - Op done function for a CCN. |
| 862 | * @ipr_cmd: ipr command struct |
| 863 | * |
| 864 | * This function is the op done function for a configuration |
| 865 | * change notification host controlled async from the adapter. |
| 866 | * |
| 867 | * Return value: |
| 868 | * none |
| 869 | **/ |
| 870 | static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) |
| 871 | { |
| 872 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 873 | struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; |
| 874 | u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| 875 | |
| 876 | list_del(&hostrcb->queue); |
| 877 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| 878 | |
| 879 | if (ioasc) { |
| 880 | if (ioasc != IPR_IOASC_IOA_WAS_RESET) |
| 881 | dev_err(&ioa_cfg->pdev->dev, |
| 882 | "Host RCB failed with IOASC: 0x%08X\n", ioasc); |
| 883 | |
| 884 | ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); |
| 885 | } else { |
| 886 | ipr_handle_config_change(ioa_cfg, hostrcb); |
| 887 | } |
| 888 | } |
| 889 | |
| 890 | /** |
| 891 | * ipr_log_vpd - Log the passed VPD to the error log. |
| 892 | * @vpids: vendor/product id struct |
| 893 | * @serial_num: serial number string |
| 894 | * |
| 895 | * Return value: |
| 896 | * none |
| 897 | **/ |
| 898 | static void ipr_log_vpd(struct ipr_std_inq_vpids *vpids, u8 *serial_num) |
| 899 | { |
| 900 | char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN |
| 901 | + IPR_SERIAL_NUM_LEN]; |
| 902 | |
| 903 | memcpy(buffer, vpids->vendor_id, IPR_VENDOR_ID_LEN); |
| 904 | memcpy(buffer + IPR_VENDOR_ID_LEN, vpids->product_id, |
| 905 | IPR_PROD_ID_LEN); |
| 906 | buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; |
| 907 | ipr_err("Vendor/Product ID: %s\n", buffer); |
| 908 | |
| 909 | memcpy(buffer, serial_num, IPR_SERIAL_NUM_LEN); |
| 910 | buffer[IPR_SERIAL_NUM_LEN] = '\0'; |
| 911 | ipr_err(" Serial Number: %s\n", buffer); |
| 912 | } |
| 913 | |
| 914 | /** |
| 915 | * ipr_log_cache_error - Log a cache error. |
| 916 | * @ioa_cfg: ioa config struct |
| 917 | * @hostrcb: hostrcb struct |
| 918 | * |
| 919 | * Return value: |
| 920 | * none |
| 921 | **/ |
| 922 | static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, |
| 923 | struct ipr_hostrcb *hostrcb) |
| 924 | { |
| 925 | struct ipr_hostrcb_type_02_error *error = |
| 926 | &hostrcb->hcam.u.error.u.type_02_error; |
| 927 | |
| 928 | ipr_err("-----Current Configuration-----\n"); |
| 929 | ipr_err("Cache Directory Card Information:\n"); |
| 930 | ipr_log_vpd(&error->ioa_vpids, error->ioa_sn); |
| 931 | ipr_err("Adapter Card Information:\n"); |
| 932 | ipr_log_vpd(&error->cfc_vpids, error->cfc_sn); |
| 933 | |
| 934 | ipr_err("-----Expected Configuration-----\n"); |
| 935 | ipr_err("Cache Directory Card Information:\n"); |
| 936 | ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpids, |
| 937 | error->ioa_last_attached_to_cfc_sn); |
| 938 | ipr_err("Adapter Card Information:\n"); |
| 939 | ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpids, |
| 940 | error->cfc_last_attached_to_ioa_sn); |
| 941 | |
| 942 | ipr_err("Additional IOA Data: %08X %08X %08X\n", |
| 943 | be32_to_cpu(error->ioa_data[0]), |
| 944 | be32_to_cpu(error->ioa_data[1]), |
| 945 | be32_to_cpu(error->ioa_data[2])); |
| 946 | } |
| 947 | |
| 948 | /** |
| 949 | * ipr_log_config_error - Log a configuration error. |
| 950 | * @ioa_cfg: ioa config struct |
| 951 | * @hostrcb: hostrcb struct |
| 952 | * |
| 953 | * Return value: |
| 954 | * none |
| 955 | **/ |
| 956 | static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, |
| 957 | struct ipr_hostrcb *hostrcb) |
| 958 | { |
| 959 | int errors_logged, i; |
| 960 | struct ipr_hostrcb_device_data_entry *dev_entry; |
| 961 | struct ipr_hostrcb_type_03_error *error; |
| 962 | |
| 963 | error = &hostrcb->hcam.u.error.u.type_03_error; |
| 964 | errors_logged = be32_to_cpu(error->errors_logged); |
| 965 | |
| 966 | ipr_err("Device Errors Detected/Logged: %d/%d\n", |
| 967 | be32_to_cpu(error->errors_detected), errors_logged); |
| 968 | |
| 969 | dev_entry = error->dev_entry; |
| 970 | |
| 971 | for (i = 0; i < errors_logged; i++, dev_entry++) { |
| 972 | ipr_err_separator; |
| 973 | |
| 974 | if (dev_entry->dev_res_addr.bus >= IPR_MAX_NUM_BUSES) { |
| 975 | ipr_err("Device %d: missing\n", i + 1); |
| 976 | } else { |
| 977 | ipr_err("Device %d: %d:%d:%d:%d\n", i + 1, |
| 978 | ioa_cfg->host->host_no, dev_entry->dev_res_addr.bus, |
| 979 | dev_entry->dev_res_addr.target, dev_entry->dev_res_addr.lun); |
| 980 | } |
| 981 | ipr_log_vpd(&dev_entry->dev_vpids, dev_entry->dev_sn); |
| 982 | |
| 983 | ipr_err("-----New Device Information-----\n"); |
| 984 | ipr_log_vpd(&dev_entry->new_dev_vpids, dev_entry->new_dev_sn); |
| 985 | |
| 986 | ipr_err("Cache Directory Card Information:\n"); |
| 987 | ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpids, |
| 988 | dev_entry->ioa_last_with_dev_sn); |
| 989 | |
| 990 | ipr_err("Adapter Card Information:\n"); |
| 991 | ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpids, |
| 992 | dev_entry->cfc_last_with_dev_sn); |
| 993 | |
| 994 | ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", |
| 995 | be32_to_cpu(dev_entry->ioa_data[0]), |
| 996 | be32_to_cpu(dev_entry->ioa_data[1]), |
| 997 | be32_to_cpu(dev_entry->ioa_data[2]), |
| 998 | be32_to_cpu(dev_entry->ioa_data[3]), |
| 999 | be32_to_cpu(dev_entry->ioa_data[4])); |
| 1000 | } |
| 1001 | } |
| 1002 | |
| 1003 | /** |
| 1004 | * ipr_log_array_error - Log an array configuration error. |
| 1005 | * @ioa_cfg: ioa config struct |
| 1006 | * @hostrcb: hostrcb struct |
| 1007 | * |
| 1008 | * Return value: |
| 1009 | * none |
| 1010 | **/ |
| 1011 | static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, |
| 1012 | struct ipr_hostrcb *hostrcb) |
| 1013 | { |
| 1014 | int i; |
| 1015 | struct ipr_hostrcb_type_04_error *error; |
| 1016 | struct ipr_hostrcb_array_data_entry *array_entry; |
| 1017 | const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; |
| 1018 | |
| 1019 | error = &hostrcb->hcam.u.error.u.type_04_error; |
| 1020 | |
| 1021 | ipr_err_separator; |
| 1022 | |
| 1023 | ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", |
| 1024 | error->protection_level, |
| 1025 | ioa_cfg->host->host_no, |
| 1026 | error->last_func_vset_res_addr.bus, |
| 1027 | error->last_func_vset_res_addr.target, |
| 1028 | error->last_func_vset_res_addr.lun); |
| 1029 | |
| 1030 | ipr_err_separator; |
| 1031 | |
| 1032 | array_entry = error->array_member; |
| 1033 | |
| 1034 | for (i = 0; i < 18; i++) { |
| 1035 | if (!memcmp(array_entry->serial_num, zero_sn, IPR_SERIAL_NUM_LEN)) |
| 1036 | continue; |
| 1037 | |
| 1038 | if (be32_to_cpu(error->exposed_mode_adn) == i) { |
| 1039 | ipr_err("Exposed Array Member %d:\n", i); |
| 1040 | } else { |
| 1041 | ipr_err("Array Member %d:\n", i); |
| 1042 | } |
| 1043 | |
| 1044 | ipr_log_vpd(&array_entry->vpids, array_entry->serial_num); |
| 1045 | |
| 1046 | if (array_entry->dev_res_addr.bus >= IPR_MAX_NUM_BUSES) { |
| 1047 | ipr_err("Current Location: unknown\n"); |
| 1048 | } else { |
| 1049 | ipr_err("Current Location: %d:%d:%d:%d\n", |
| 1050 | ioa_cfg->host->host_no, |
| 1051 | array_entry->dev_res_addr.bus, |
| 1052 | array_entry->dev_res_addr.target, |
| 1053 | array_entry->dev_res_addr.lun); |
| 1054 | } |
| 1055 | |
brking@us.ibm.com | 1b69f64 | 2005-05-02 19:50:59 -0500 | [diff] [blame] | 1056 | if (array_entry->expected_dev_res_addr.bus >= IPR_MAX_NUM_BUSES) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | ipr_err("Expected Location: unknown\n"); |
| 1058 | } else { |
| 1059 | ipr_err("Expected Location: %d:%d:%d:%d\n", |
| 1060 | ioa_cfg->host->host_no, |
| 1061 | array_entry->expected_dev_res_addr.bus, |
| 1062 | array_entry->expected_dev_res_addr.target, |
| 1063 | array_entry->expected_dev_res_addr.lun); |
| 1064 | } |
| 1065 | |
| 1066 | ipr_err_separator; |
| 1067 | |
| 1068 | if (i == 9) |
| 1069 | array_entry = error->array_member2; |
| 1070 | else |
| 1071 | array_entry++; |
| 1072 | } |
| 1073 | } |
| 1074 | |
| 1075 | /** |
| 1076 | * ipr_log_generic_error - Log an adapter error. |
| 1077 | * @ioa_cfg: ioa config struct |
| 1078 | * @hostrcb: hostrcb struct |
| 1079 | * |
| 1080 | * Return value: |
| 1081 | * none |
| 1082 | **/ |
| 1083 | static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, |
| 1084 | struct ipr_hostrcb *hostrcb) |
| 1085 | { |
| 1086 | int i; |
| 1087 | int ioa_data_len = be32_to_cpu(hostrcb->hcam.length); |
| 1088 | |
| 1089 | if (ioa_data_len == 0) |
| 1090 | return; |
| 1091 | |
| 1092 | ipr_err("IOA Error Data:\n"); |
| 1093 | ipr_err("Offset 0 1 2 3 4 5 6 7 8 9 A B C D E F\n"); |
| 1094 | |
| 1095 | for (i = 0; i < ioa_data_len / 4; i += 4) { |
| 1096 | ipr_err("%08X: %08X %08X %08X %08X\n", i*4, |
| 1097 | be32_to_cpu(hostrcb->hcam.u.raw.data[i]), |
| 1098 | be32_to_cpu(hostrcb->hcam.u.raw.data[i+1]), |
| 1099 | be32_to_cpu(hostrcb->hcam.u.raw.data[i+2]), |
| 1100 | be32_to_cpu(hostrcb->hcam.u.raw.data[i+3])); |
| 1101 | } |
| 1102 | } |
| 1103 | |
| 1104 | /** |
| 1105 | * ipr_get_error - Find the specfied IOASC in the ipr_error_table. |
| 1106 | * @ioasc: IOASC |
| 1107 | * |
| 1108 | * This function will return the index of into the ipr_error_table |
| 1109 | * for the specified IOASC. If the IOASC is not in the table, |
| 1110 | * 0 will be returned, which points to the entry used for unknown errors. |
| 1111 | * |
| 1112 | * Return value: |
| 1113 | * index into the ipr_error_table |
| 1114 | **/ |
| 1115 | static u32 ipr_get_error(u32 ioasc) |
| 1116 | { |
| 1117 | int i; |
| 1118 | |
| 1119 | for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) |
| 1120 | if (ipr_error_table[i].ioasc == ioasc) |
| 1121 | return i; |
| 1122 | |
| 1123 | return 0; |
| 1124 | } |
| 1125 | |
| 1126 | /** |
| 1127 | * ipr_handle_log_data - Log an adapter error. |
| 1128 | * @ioa_cfg: ioa config struct |
| 1129 | * @hostrcb: hostrcb struct |
| 1130 | * |
| 1131 | * This function logs an adapter error to the system. |
| 1132 | * |
| 1133 | * Return value: |
| 1134 | * none |
| 1135 | **/ |
| 1136 | static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, |
| 1137 | struct ipr_hostrcb *hostrcb) |
| 1138 | { |
| 1139 | u32 ioasc; |
| 1140 | int error_index; |
| 1141 | |
| 1142 | if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) |
| 1143 | return; |
| 1144 | |
| 1145 | if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) |
| 1146 | dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); |
| 1147 | |
| 1148 | ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc); |
| 1149 | |
| 1150 | if (ioasc == IPR_IOASC_BUS_WAS_RESET || |
| 1151 | ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) { |
| 1152 | /* Tell the midlayer we had a bus reset so it will handle the UA properly */ |
| 1153 | scsi_report_bus_reset(ioa_cfg->host, |
| 1154 | hostrcb->hcam.u.error.failing_dev_res_addr.bus); |
| 1155 | } |
| 1156 | |
| 1157 | error_index = ipr_get_error(ioasc); |
| 1158 | |
| 1159 | if (!ipr_error_table[error_index].log_hcam) |
| 1160 | return; |
| 1161 | |
| 1162 | if (ipr_is_device(&hostrcb->hcam.u.error.failing_dev_res_addr)) { |
| 1163 | ipr_res_err(ioa_cfg, hostrcb->hcam.u.error.failing_dev_res_addr, |
| 1164 | "%s\n", ipr_error_table[error_index].error); |
| 1165 | } else { |
| 1166 | dev_err(&ioa_cfg->pdev->dev, "%s\n", |
| 1167 | ipr_error_table[error_index].error); |
| 1168 | } |
| 1169 | |
| 1170 | /* Set indication we have logged an error */ |
| 1171 | ioa_cfg->errors_logged++; |
| 1172 | |
| 1173 | if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) |
| 1174 | return; |
| 1175 | |
| 1176 | switch (hostrcb->hcam.overlay_id) { |
| 1177 | case IPR_HOST_RCB_OVERLAY_ID_1: |
| 1178 | ipr_log_generic_error(ioa_cfg, hostrcb); |
| 1179 | break; |
| 1180 | case IPR_HOST_RCB_OVERLAY_ID_2: |
| 1181 | ipr_log_cache_error(ioa_cfg, hostrcb); |
| 1182 | break; |
| 1183 | case IPR_HOST_RCB_OVERLAY_ID_3: |
| 1184 | ipr_log_config_error(ioa_cfg, hostrcb); |
| 1185 | break; |
| 1186 | case IPR_HOST_RCB_OVERLAY_ID_4: |
| 1187 | case IPR_HOST_RCB_OVERLAY_ID_6: |
| 1188 | ipr_log_array_error(ioa_cfg, hostrcb); |
| 1189 | break; |
| 1190 | case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: |
| 1191 | ipr_log_generic_error(ioa_cfg, hostrcb); |
| 1192 | break; |
| 1193 | default: |
| 1194 | dev_err(&ioa_cfg->pdev->dev, |
| 1195 | "Unknown error received. Overlay ID: %d\n", |
| 1196 | hostrcb->hcam.overlay_id); |
| 1197 | break; |
| 1198 | } |
| 1199 | } |
| 1200 | |
| 1201 | /** |
| 1202 | * ipr_process_error - Op done function for an adapter error log. |
| 1203 | * @ipr_cmd: ipr command struct |
| 1204 | * |
| 1205 | * This function is the op done function for an error log host |
| 1206 | * controlled async from the adapter. It will log the error and |
| 1207 | * send the HCAM back to the adapter. |
| 1208 | * |
| 1209 | * Return value: |
| 1210 | * none |
| 1211 | **/ |
| 1212 | static void ipr_process_error(struct ipr_cmnd *ipr_cmd) |
| 1213 | { |
| 1214 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 1215 | struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; |
| 1216 | u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| 1217 | |
| 1218 | list_del(&hostrcb->queue); |
| 1219 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| 1220 | |
| 1221 | if (!ioasc) { |
| 1222 | ipr_handle_log_data(ioa_cfg, hostrcb); |
| 1223 | } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) { |
| 1224 | dev_err(&ioa_cfg->pdev->dev, |
| 1225 | "Host RCB failed with IOASC: 0x%08X\n", ioasc); |
| 1226 | } |
| 1227 | |
| 1228 | ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); |
| 1229 | } |
| 1230 | |
| 1231 | /** |
| 1232 | * ipr_timeout - An internally generated op has timed out. |
| 1233 | * @ipr_cmd: ipr command struct |
| 1234 | * |
| 1235 | * This function blocks host requests and initiates an |
| 1236 | * adapter reset. |
| 1237 | * |
| 1238 | * Return value: |
| 1239 | * none |
| 1240 | **/ |
| 1241 | static void ipr_timeout(struct ipr_cmnd *ipr_cmd) |
| 1242 | { |
| 1243 | unsigned long lock_flags = 0; |
| 1244 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 1245 | |
| 1246 | ENTER; |
| 1247 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 1248 | |
| 1249 | ioa_cfg->errors_logged++; |
| 1250 | dev_err(&ioa_cfg->pdev->dev, |
| 1251 | "Adapter being reset due to command timeout.\n"); |
| 1252 | |
| 1253 | if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) |
| 1254 | ioa_cfg->sdt_state = GET_DUMP; |
| 1255 | |
| 1256 | if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) |
| 1257 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); |
| 1258 | |
| 1259 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 1260 | LEAVE; |
| 1261 | } |
| 1262 | |
| 1263 | /** |
| 1264 | * ipr_oper_timeout - Adapter timed out transitioning to operational |
| 1265 | * @ipr_cmd: ipr command struct |
| 1266 | * |
| 1267 | * This function blocks host requests and initiates an |
| 1268 | * adapter reset. |
| 1269 | * |
| 1270 | * Return value: |
| 1271 | * none |
| 1272 | **/ |
| 1273 | static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) |
| 1274 | { |
| 1275 | unsigned long lock_flags = 0; |
| 1276 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 1277 | |
| 1278 | ENTER; |
| 1279 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 1280 | |
| 1281 | ioa_cfg->errors_logged++; |
| 1282 | dev_err(&ioa_cfg->pdev->dev, |
| 1283 | "Adapter timed out transitioning to operational.\n"); |
| 1284 | |
| 1285 | if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) |
| 1286 | ioa_cfg->sdt_state = GET_DUMP; |
| 1287 | |
| 1288 | if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { |
| 1289 | if (ipr_fastfail) |
| 1290 | ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; |
| 1291 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); |
| 1292 | } |
| 1293 | |
| 1294 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 1295 | LEAVE; |
| 1296 | } |
| 1297 | |
| 1298 | /** |
| 1299 | * ipr_reset_reload - Reset/Reload the IOA |
| 1300 | * @ioa_cfg: ioa config struct |
| 1301 | * @shutdown_type: shutdown type |
| 1302 | * |
| 1303 | * This function resets the adapter and re-initializes it. |
| 1304 | * This function assumes that all new host commands have been stopped. |
| 1305 | * Return value: |
| 1306 | * SUCCESS / FAILED |
| 1307 | **/ |
| 1308 | static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg, |
| 1309 | enum ipr_shutdown_type shutdown_type) |
| 1310 | { |
| 1311 | if (!ioa_cfg->in_reset_reload) |
| 1312 | ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); |
| 1313 | |
| 1314 | spin_unlock_irq(ioa_cfg->host->host_lock); |
| 1315 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
| 1316 | spin_lock_irq(ioa_cfg->host->host_lock); |
| 1317 | |
| 1318 | /* If we got hit with a host reset while we were already resetting |
| 1319 | the adapter for some reason, and the reset failed. */ |
| 1320 | if (ioa_cfg->ioa_is_dead) { |
| 1321 | ipr_trace; |
| 1322 | return FAILED; |
| 1323 | } |
| 1324 | |
| 1325 | return SUCCESS; |
| 1326 | } |
| 1327 | |
| 1328 | /** |
| 1329 | * ipr_find_ses_entry - Find matching SES in SES table |
| 1330 | * @res: resource entry struct of SES |
| 1331 | * |
| 1332 | * Return value: |
| 1333 | * pointer to SES table entry / NULL on failure |
| 1334 | **/ |
| 1335 | static const struct ipr_ses_table_entry * |
| 1336 | ipr_find_ses_entry(struct ipr_resource_entry *res) |
| 1337 | { |
| 1338 | int i, j, matches; |
| 1339 | const struct ipr_ses_table_entry *ste = ipr_ses_table; |
| 1340 | |
| 1341 | for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { |
| 1342 | for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { |
| 1343 | if (ste->compare_product_id_byte[j] == 'X') { |
| 1344 | if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j]) |
| 1345 | matches++; |
| 1346 | else |
| 1347 | break; |
| 1348 | } else |
| 1349 | matches++; |
| 1350 | } |
| 1351 | |
| 1352 | if (matches == IPR_PROD_ID_LEN) |
| 1353 | return ste; |
| 1354 | } |
| 1355 | |
| 1356 | return NULL; |
| 1357 | } |
| 1358 | |
| 1359 | /** |
| 1360 | * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus |
| 1361 | * @ioa_cfg: ioa config struct |
| 1362 | * @bus: SCSI bus |
| 1363 | * @bus_width: bus width |
| 1364 | * |
| 1365 | * Return value: |
| 1366 | * SCSI bus speed in units of 100KHz, 1600 is 160 MHz |
| 1367 | * For a 2-byte wide SCSI bus, the maximum transfer speed is |
| 1368 | * twice the maximum transfer rate (e.g. for a wide enabled bus, |
| 1369 | * max 160MHz = max 320MB/sec). |
| 1370 | **/ |
| 1371 | static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) |
| 1372 | { |
| 1373 | struct ipr_resource_entry *res; |
| 1374 | const struct ipr_ses_table_entry *ste; |
| 1375 | u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); |
| 1376 | |
| 1377 | /* Loop through each config table entry in the config table buffer */ |
| 1378 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { |
| 1379 | if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data))) |
| 1380 | continue; |
| 1381 | |
| 1382 | if (bus != res->cfgte.res_addr.bus) |
| 1383 | continue; |
| 1384 | |
| 1385 | if (!(ste = ipr_find_ses_entry(res))) |
| 1386 | continue; |
| 1387 | |
| 1388 | max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); |
| 1389 | } |
| 1390 | |
| 1391 | return max_xfer_rate; |
| 1392 | } |
| 1393 | |
| 1394 | /** |
| 1395 | * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA |
| 1396 | * @ioa_cfg: ioa config struct |
| 1397 | * @max_delay: max delay in micro-seconds to wait |
| 1398 | * |
| 1399 | * Waits for an IODEBUG ACK from the IOA, doing busy looping. |
| 1400 | * |
| 1401 | * Return value: |
| 1402 | * 0 on success / other on failure |
| 1403 | **/ |
| 1404 | static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) |
| 1405 | { |
| 1406 | volatile u32 pcii_reg; |
| 1407 | int delay = 1; |
| 1408 | |
| 1409 | /* Read interrupt reg until IOA signals IO Debug Acknowledge */ |
| 1410 | while (delay < max_delay) { |
| 1411 | pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); |
| 1412 | |
| 1413 | if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) |
| 1414 | return 0; |
| 1415 | |
| 1416 | /* udelay cannot be used if delay is more than a few milliseconds */ |
| 1417 | if ((delay / 1000) > MAX_UDELAY_MS) |
| 1418 | mdelay(delay / 1000); |
| 1419 | else |
| 1420 | udelay(delay); |
| 1421 | |
| 1422 | delay += delay; |
| 1423 | } |
| 1424 | return -EIO; |
| 1425 | } |
| 1426 | |
| 1427 | /** |
| 1428 | * ipr_get_ldump_data_section - Dump IOA memory |
| 1429 | * @ioa_cfg: ioa config struct |
| 1430 | * @start_addr: adapter address to dump |
| 1431 | * @dest: destination kernel buffer |
| 1432 | * @length_in_words: length to dump in 4 byte words |
| 1433 | * |
| 1434 | * Return value: |
| 1435 | * 0 on success / -EIO on failure |
| 1436 | **/ |
| 1437 | static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, |
| 1438 | u32 start_addr, |
| 1439 | __be32 *dest, u32 length_in_words) |
| 1440 | { |
| 1441 | volatile u32 temp_pcii_reg; |
| 1442 | int i, delay = 0; |
| 1443 | |
| 1444 | /* Write IOA interrupt reg starting LDUMP state */ |
| 1445 | writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), |
| 1446 | ioa_cfg->regs.set_uproc_interrupt_reg); |
| 1447 | |
| 1448 | /* Wait for IO debug acknowledge */ |
| 1449 | if (ipr_wait_iodbg_ack(ioa_cfg, |
| 1450 | IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { |
| 1451 | dev_err(&ioa_cfg->pdev->dev, |
| 1452 | "IOA dump long data transfer timeout\n"); |
| 1453 | return -EIO; |
| 1454 | } |
| 1455 | |
| 1456 | /* Signal LDUMP interlocked - clear IO debug ack */ |
| 1457 | writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, |
| 1458 | ioa_cfg->regs.clr_interrupt_reg); |
| 1459 | |
| 1460 | /* Write Mailbox with starting address */ |
| 1461 | writel(start_addr, ioa_cfg->ioa_mailbox); |
| 1462 | |
| 1463 | /* Signal address valid - clear IOA Reset alert */ |
| 1464 | writel(IPR_UPROCI_RESET_ALERT, |
| 1465 | ioa_cfg->regs.clr_uproc_interrupt_reg); |
| 1466 | |
| 1467 | for (i = 0; i < length_in_words; i++) { |
| 1468 | /* Wait for IO debug acknowledge */ |
| 1469 | if (ipr_wait_iodbg_ack(ioa_cfg, |
| 1470 | IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { |
| 1471 | dev_err(&ioa_cfg->pdev->dev, |
| 1472 | "IOA dump short data transfer timeout\n"); |
| 1473 | return -EIO; |
| 1474 | } |
| 1475 | |
| 1476 | /* Read data from mailbox and increment destination pointer */ |
| 1477 | *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); |
| 1478 | dest++; |
| 1479 | |
| 1480 | /* For all but the last word of data, signal data received */ |
| 1481 | if (i < (length_in_words - 1)) { |
| 1482 | /* Signal dump data received - Clear IO debug Ack */ |
| 1483 | writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, |
| 1484 | ioa_cfg->regs.clr_interrupt_reg); |
| 1485 | } |
| 1486 | } |
| 1487 | |
| 1488 | /* Signal end of block transfer. Set reset alert then clear IO debug ack */ |
| 1489 | writel(IPR_UPROCI_RESET_ALERT, |
| 1490 | ioa_cfg->regs.set_uproc_interrupt_reg); |
| 1491 | |
| 1492 | writel(IPR_UPROCI_IO_DEBUG_ALERT, |
| 1493 | ioa_cfg->regs.clr_uproc_interrupt_reg); |
| 1494 | |
| 1495 | /* Signal dump data received - Clear IO debug Ack */ |
| 1496 | writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, |
| 1497 | ioa_cfg->regs.clr_interrupt_reg); |
| 1498 | |
| 1499 | /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ |
| 1500 | while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { |
| 1501 | temp_pcii_reg = |
| 1502 | readl(ioa_cfg->regs.sense_uproc_interrupt_reg); |
| 1503 | |
| 1504 | if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) |
| 1505 | return 0; |
| 1506 | |
| 1507 | udelay(10); |
| 1508 | delay += 10; |
| 1509 | } |
| 1510 | |
| 1511 | return 0; |
| 1512 | } |
| 1513 | |
| 1514 | #ifdef CONFIG_SCSI_IPR_DUMP |
| 1515 | /** |
| 1516 | * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer |
| 1517 | * @ioa_cfg: ioa config struct |
| 1518 | * @pci_address: adapter address |
| 1519 | * @length: length of data to copy |
| 1520 | * |
| 1521 | * Copy data from PCI adapter to kernel buffer. |
| 1522 | * Note: length MUST be a 4 byte multiple |
| 1523 | * Return value: |
| 1524 | * 0 on success / other on failure |
| 1525 | **/ |
| 1526 | static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, |
| 1527 | unsigned long pci_address, u32 length) |
| 1528 | { |
| 1529 | int bytes_copied = 0; |
| 1530 | int cur_len, rc, rem_len, rem_page_len; |
| 1531 | __be32 *page; |
| 1532 | unsigned long lock_flags = 0; |
| 1533 | struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; |
| 1534 | |
| 1535 | while (bytes_copied < length && |
| 1536 | (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) { |
| 1537 | if (ioa_dump->page_offset >= PAGE_SIZE || |
| 1538 | ioa_dump->page_offset == 0) { |
| 1539 | page = (__be32 *)__get_free_page(GFP_ATOMIC); |
| 1540 | |
| 1541 | if (!page) { |
| 1542 | ipr_trace; |
| 1543 | return bytes_copied; |
| 1544 | } |
| 1545 | |
| 1546 | ioa_dump->page_offset = 0; |
| 1547 | ioa_dump->ioa_data[ioa_dump->next_page_index] = page; |
| 1548 | ioa_dump->next_page_index++; |
| 1549 | } else |
| 1550 | page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; |
| 1551 | |
| 1552 | rem_len = length - bytes_copied; |
| 1553 | rem_page_len = PAGE_SIZE - ioa_dump->page_offset; |
| 1554 | cur_len = min(rem_len, rem_page_len); |
| 1555 | |
| 1556 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 1557 | if (ioa_cfg->sdt_state == ABORT_DUMP) { |
| 1558 | rc = -EIO; |
| 1559 | } else { |
| 1560 | rc = ipr_get_ldump_data_section(ioa_cfg, |
| 1561 | pci_address + bytes_copied, |
| 1562 | &page[ioa_dump->page_offset / 4], |
| 1563 | (cur_len / sizeof(u32))); |
| 1564 | } |
| 1565 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 1566 | |
| 1567 | if (!rc) { |
| 1568 | ioa_dump->page_offset += cur_len; |
| 1569 | bytes_copied += cur_len; |
| 1570 | } else { |
| 1571 | ipr_trace; |
| 1572 | break; |
| 1573 | } |
| 1574 | schedule(); |
| 1575 | } |
| 1576 | |
| 1577 | return bytes_copied; |
| 1578 | } |
| 1579 | |
| 1580 | /** |
| 1581 | * ipr_init_dump_entry_hdr - Initialize a dump entry header. |
| 1582 | * @hdr: dump entry header struct |
| 1583 | * |
| 1584 | * Return value: |
| 1585 | * nothing |
| 1586 | **/ |
| 1587 | static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) |
| 1588 | { |
| 1589 | hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; |
| 1590 | hdr->num_elems = 1; |
| 1591 | hdr->offset = sizeof(*hdr); |
| 1592 | hdr->status = IPR_DUMP_STATUS_SUCCESS; |
| 1593 | } |
| 1594 | |
| 1595 | /** |
| 1596 | * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. |
| 1597 | * @ioa_cfg: ioa config struct |
| 1598 | * @driver_dump: driver dump struct |
| 1599 | * |
| 1600 | * Return value: |
| 1601 | * nothing |
| 1602 | **/ |
| 1603 | static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, |
| 1604 | struct ipr_driver_dump *driver_dump) |
| 1605 | { |
| 1606 | struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; |
| 1607 | |
| 1608 | ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); |
| 1609 | driver_dump->ioa_type_entry.hdr.len = |
| 1610 | sizeof(struct ipr_dump_ioa_type_entry) - |
| 1611 | sizeof(struct ipr_dump_entry_header); |
| 1612 | driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; |
| 1613 | driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; |
| 1614 | driver_dump->ioa_type_entry.type = ioa_cfg->type; |
| 1615 | driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | |
| 1616 | (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | |
| 1617 | ucode_vpd->minor_release[1]; |
| 1618 | driver_dump->hdr.num_entries++; |
| 1619 | } |
| 1620 | |
| 1621 | /** |
| 1622 | * ipr_dump_version_data - Fill in the driver version in the dump. |
| 1623 | * @ioa_cfg: ioa config struct |
| 1624 | * @driver_dump: driver dump struct |
| 1625 | * |
| 1626 | * Return value: |
| 1627 | * nothing |
| 1628 | **/ |
| 1629 | static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, |
| 1630 | struct ipr_driver_dump *driver_dump) |
| 1631 | { |
| 1632 | ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); |
| 1633 | driver_dump->version_entry.hdr.len = |
| 1634 | sizeof(struct ipr_dump_version_entry) - |
| 1635 | sizeof(struct ipr_dump_entry_header); |
| 1636 | driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; |
| 1637 | driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; |
| 1638 | strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); |
| 1639 | driver_dump->hdr.num_entries++; |
| 1640 | } |
| 1641 | |
| 1642 | /** |
| 1643 | * ipr_dump_trace_data - Fill in the IOA trace in the dump. |
| 1644 | * @ioa_cfg: ioa config struct |
| 1645 | * @driver_dump: driver dump struct |
| 1646 | * |
| 1647 | * Return value: |
| 1648 | * nothing |
| 1649 | **/ |
| 1650 | static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, |
| 1651 | struct ipr_driver_dump *driver_dump) |
| 1652 | { |
| 1653 | ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); |
| 1654 | driver_dump->trace_entry.hdr.len = |
| 1655 | sizeof(struct ipr_dump_trace_entry) - |
| 1656 | sizeof(struct ipr_dump_entry_header); |
| 1657 | driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; |
| 1658 | driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; |
| 1659 | memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); |
| 1660 | driver_dump->hdr.num_entries++; |
| 1661 | } |
| 1662 | |
| 1663 | /** |
| 1664 | * ipr_dump_location_data - Fill in the IOA location in the dump. |
| 1665 | * @ioa_cfg: ioa config struct |
| 1666 | * @driver_dump: driver dump struct |
| 1667 | * |
| 1668 | * Return value: |
| 1669 | * nothing |
| 1670 | **/ |
| 1671 | static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, |
| 1672 | struct ipr_driver_dump *driver_dump) |
| 1673 | { |
| 1674 | ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); |
| 1675 | driver_dump->location_entry.hdr.len = |
| 1676 | sizeof(struct ipr_dump_location_entry) - |
| 1677 | sizeof(struct ipr_dump_entry_header); |
| 1678 | driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; |
| 1679 | driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; |
| 1680 | strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id); |
| 1681 | driver_dump->hdr.num_entries++; |
| 1682 | } |
| 1683 | |
| 1684 | /** |
| 1685 | * ipr_get_ioa_dump - Perform a dump of the driver and adapter. |
| 1686 | * @ioa_cfg: ioa config struct |
| 1687 | * @dump: dump struct |
| 1688 | * |
| 1689 | * Return value: |
| 1690 | * nothing |
| 1691 | **/ |
| 1692 | static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) |
| 1693 | { |
| 1694 | unsigned long start_addr, sdt_word; |
| 1695 | unsigned long lock_flags = 0; |
| 1696 | struct ipr_driver_dump *driver_dump = &dump->driver_dump; |
| 1697 | struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; |
| 1698 | u32 num_entries, start_off, end_off; |
| 1699 | u32 bytes_to_copy, bytes_copied, rc; |
| 1700 | struct ipr_sdt *sdt; |
| 1701 | int i; |
| 1702 | |
| 1703 | ENTER; |
| 1704 | |
| 1705 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 1706 | |
| 1707 | if (ioa_cfg->sdt_state != GET_DUMP) { |
| 1708 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 1709 | return; |
| 1710 | } |
| 1711 | |
| 1712 | start_addr = readl(ioa_cfg->ioa_mailbox); |
| 1713 | |
| 1714 | if (!ipr_sdt_is_fmt2(start_addr)) { |
| 1715 | dev_err(&ioa_cfg->pdev->dev, |
| 1716 | "Invalid dump table format: %lx\n", start_addr); |
| 1717 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 1718 | return; |
| 1719 | } |
| 1720 | |
| 1721 | dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); |
| 1722 | |
| 1723 | driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; |
| 1724 | |
| 1725 | /* Initialize the overall dump header */ |
| 1726 | driver_dump->hdr.len = sizeof(struct ipr_driver_dump); |
| 1727 | driver_dump->hdr.num_entries = 1; |
| 1728 | driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); |
| 1729 | driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; |
| 1730 | driver_dump->hdr.os = IPR_DUMP_OS_LINUX; |
| 1731 | driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; |
| 1732 | |
| 1733 | ipr_dump_version_data(ioa_cfg, driver_dump); |
| 1734 | ipr_dump_location_data(ioa_cfg, driver_dump); |
| 1735 | ipr_dump_ioa_type_data(ioa_cfg, driver_dump); |
| 1736 | ipr_dump_trace_data(ioa_cfg, driver_dump); |
| 1737 | |
| 1738 | /* Update dump_header */ |
| 1739 | driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); |
| 1740 | |
| 1741 | /* IOA Dump entry */ |
| 1742 | ipr_init_dump_entry_hdr(&ioa_dump->hdr); |
| 1743 | ioa_dump->format = IPR_SDT_FMT2; |
| 1744 | ioa_dump->hdr.len = 0; |
| 1745 | ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; |
| 1746 | ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; |
| 1747 | |
| 1748 | /* First entries in sdt are actually a list of dump addresses and |
| 1749 | lengths to gather the real dump data. sdt represents the pointer |
| 1750 | to the ioa generated dump table. Dump data will be extracted based |
| 1751 | on entries in this table */ |
| 1752 | sdt = &ioa_dump->sdt; |
| 1753 | |
| 1754 | rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, |
| 1755 | sizeof(struct ipr_sdt) / sizeof(__be32)); |
| 1756 | |
| 1757 | /* Smart Dump table is ready to use and the first entry is valid */ |
| 1758 | if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) { |
| 1759 | dev_err(&ioa_cfg->pdev->dev, |
| 1760 | "Dump of IOA failed. Dump table not valid: %d, %X.\n", |
| 1761 | rc, be32_to_cpu(sdt->hdr.state)); |
| 1762 | driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; |
| 1763 | ioa_cfg->sdt_state = DUMP_OBTAINED; |
| 1764 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 1765 | return; |
| 1766 | } |
| 1767 | |
| 1768 | num_entries = be32_to_cpu(sdt->hdr.num_entries_used); |
| 1769 | |
| 1770 | if (num_entries > IPR_NUM_SDT_ENTRIES) |
| 1771 | num_entries = IPR_NUM_SDT_ENTRIES; |
| 1772 | |
| 1773 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 1774 | |
| 1775 | for (i = 0; i < num_entries; i++) { |
| 1776 | if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) { |
| 1777 | driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; |
| 1778 | break; |
| 1779 | } |
| 1780 | |
| 1781 | if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { |
| 1782 | sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset); |
| 1783 | start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; |
| 1784 | end_off = be32_to_cpu(sdt->entry[i].end_offset); |
| 1785 | |
| 1786 | if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) { |
| 1787 | bytes_to_copy = end_off - start_off; |
| 1788 | if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) { |
| 1789 | sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; |
| 1790 | continue; |
| 1791 | } |
| 1792 | |
| 1793 | /* Copy data from adapter to driver buffers */ |
| 1794 | bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, |
| 1795 | bytes_to_copy); |
| 1796 | |
| 1797 | ioa_dump->hdr.len += bytes_copied; |
| 1798 | |
| 1799 | if (bytes_copied != bytes_to_copy) { |
| 1800 | driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; |
| 1801 | break; |
| 1802 | } |
| 1803 | } |
| 1804 | } |
| 1805 | } |
| 1806 | |
| 1807 | dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); |
| 1808 | |
| 1809 | /* Update dump_header */ |
| 1810 | driver_dump->hdr.len += ioa_dump->hdr.len; |
| 1811 | wmb(); |
| 1812 | ioa_cfg->sdt_state = DUMP_OBTAINED; |
| 1813 | LEAVE; |
| 1814 | } |
| 1815 | |
| 1816 | #else |
| 1817 | #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0) |
| 1818 | #endif |
| 1819 | |
| 1820 | /** |
| 1821 | * ipr_release_dump - Free adapter dump memory |
| 1822 | * @kref: kref struct |
| 1823 | * |
| 1824 | * Return value: |
| 1825 | * nothing |
| 1826 | **/ |
| 1827 | static void ipr_release_dump(struct kref *kref) |
| 1828 | { |
| 1829 | struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref); |
| 1830 | struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; |
| 1831 | unsigned long lock_flags = 0; |
| 1832 | int i; |
| 1833 | |
| 1834 | ENTER; |
| 1835 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 1836 | ioa_cfg->dump = NULL; |
| 1837 | ioa_cfg->sdt_state = INACTIVE; |
| 1838 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 1839 | |
| 1840 | for (i = 0; i < dump->ioa_dump.next_page_index; i++) |
| 1841 | free_page((unsigned long) dump->ioa_dump.ioa_data[i]); |
| 1842 | |
| 1843 | kfree(dump); |
| 1844 | LEAVE; |
| 1845 | } |
| 1846 | |
| 1847 | /** |
| 1848 | * ipr_worker_thread - Worker thread |
| 1849 | * @data: ioa config struct |
| 1850 | * |
| 1851 | * Called at task level from a work thread. This function takes care |
| 1852 | * of adding and removing device from the mid-layer as configuration |
| 1853 | * changes are detected by the adapter. |
| 1854 | * |
| 1855 | * Return value: |
| 1856 | * nothing |
| 1857 | **/ |
| 1858 | static void ipr_worker_thread(void *data) |
| 1859 | { |
| 1860 | unsigned long lock_flags; |
| 1861 | struct ipr_resource_entry *res; |
| 1862 | struct scsi_device *sdev; |
| 1863 | struct ipr_dump *dump; |
| 1864 | struct ipr_ioa_cfg *ioa_cfg = data; |
| 1865 | u8 bus, target, lun; |
| 1866 | int did_work; |
| 1867 | |
| 1868 | ENTER; |
| 1869 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 1870 | |
| 1871 | if (ioa_cfg->sdt_state == GET_DUMP) { |
| 1872 | dump = ioa_cfg->dump; |
| 1873 | if (!dump) { |
| 1874 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 1875 | return; |
| 1876 | } |
| 1877 | kref_get(&dump->kref); |
| 1878 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 1879 | ipr_get_ioa_dump(ioa_cfg, dump); |
| 1880 | kref_put(&dump->kref, ipr_release_dump); |
| 1881 | |
| 1882 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 1883 | if (ioa_cfg->sdt_state == DUMP_OBTAINED) |
| 1884 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); |
| 1885 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 1886 | return; |
| 1887 | } |
| 1888 | |
| 1889 | restart: |
| 1890 | do { |
| 1891 | did_work = 0; |
| 1892 | if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) { |
| 1893 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 1894 | return; |
| 1895 | } |
| 1896 | |
| 1897 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { |
| 1898 | if (res->del_from_ml && res->sdev) { |
| 1899 | did_work = 1; |
| 1900 | sdev = res->sdev; |
| 1901 | if (!scsi_device_get(sdev)) { |
| 1902 | res->sdev = NULL; |
| 1903 | list_move_tail(&res->queue, &ioa_cfg->free_res_q); |
| 1904 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 1905 | scsi_remove_device(sdev); |
| 1906 | scsi_device_put(sdev); |
| 1907 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 1908 | } |
| 1909 | break; |
| 1910 | } |
| 1911 | } |
| 1912 | } while(did_work); |
| 1913 | |
| 1914 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { |
| 1915 | if (res->add_to_ml) { |
| 1916 | bus = res->cfgte.res_addr.bus; |
| 1917 | target = res->cfgte.res_addr.target; |
| 1918 | lun = res->cfgte.res_addr.lun; |
| 1919 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 1920 | scsi_add_device(ioa_cfg->host, bus, target, lun); |
| 1921 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 1922 | goto restart; |
| 1923 | } |
| 1924 | } |
| 1925 | |
| 1926 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 1927 | kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE, NULL); |
| 1928 | LEAVE; |
| 1929 | } |
| 1930 | |
| 1931 | #ifdef CONFIG_SCSI_IPR_TRACE |
| 1932 | /** |
| 1933 | * ipr_read_trace - Dump the adapter trace |
| 1934 | * @kobj: kobject struct |
| 1935 | * @buf: buffer |
| 1936 | * @off: offset |
| 1937 | * @count: buffer size |
| 1938 | * |
| 1939 | * Return value: |
| 1940 | * number of bytes printed to buffer |
| 1941 | **/ |
| 1942 | static ssize_t ipr_read_trace(struct kobject *kobj, char *buf, |
| 1943 | loff_t off, size_t count) |
| 1944 | { |
| 1945 | struct class_device *cdev = container_of(kobj,struct class_device,kobj); |
| 1946 | struct Scsi_Host *shost = class_to_shost(cdev); |
| 1947 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| 1948 | unsigned long lock_flags = 0; |
| 1949 | int size = IPR_TRACE_SIZE; |
| 1950 | char *src = (char *)ioa_cfg->trace; |
| 1951 | |
| 1952 | if (off > size) |
| 1953 | return 0; |
| 1954 | if (off + count > size) { |
| 1955 | size -= off; |
| 1956 | count = size; |
| 1957 | } |
| 1958 | |
| 1959 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 1960 | memcpy(buf, &src[off], count); |
| 1961 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 1962 | return count; |
| 1963 | } |
| 1964 | |
| 1965 | static struct bin_attribute ipr_trace_attr = { |
| 1966 | .attr = { |
| 1967 | .name = "trace", |
| 1968 | .mode = S_IRUGO, |
| 1969 | }, |
| 1970 | .size = 0, |
| 1971 | .read = ipr_read_trace, |
| 1972 | }; |
| 1973 | #endif |
| 1974 | |
| 1975 | /** |
| 1976 | * ipr_show_fw_version - Show the firmware version |
| 1977 | * @class_dev: class device struct |
| 1978 | * @buf: buffer |
| 1979 | * |
| 1980 | * Return value: |
| 1981 | * number of bytes printed to buffer |
| 1982 | **/ |
| 1983 | static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf) |
| 1984 | { |
| 1985 | struct Scsi_Host *shost = class_to_shost(class_dev); |
| 1986 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| 1987 | struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; |
| 1988 | unsigned long lock_flags = 0; |
| 1989 | int len; |
| 1990 | |
| 1991 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 1992 | len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", |
| 1993 | ucode_vpd->major_release, ucode_vpd->card_type, |
| 1994 | ucode_vpd->minor_release[0], |
| 1995 | ucode_vpd->minor_release[1]); |
| 1996 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 1997 | return len; |
| 1998 | } |
| 1999 | |
| 2000 | static struct class_device_attribute ipr_fw_version_attr = { |
| 2001 | .attr = { |
| 2002 | .name = "fw_version", |
| 2003 | .mode = S_IRUGO, |
| 2004 | }, |
| 2005 | .show = ipr_show_fw_version, |
| 2006 | }; |
| 2007 | |
| 2008 | /** |
| 2009 | * ipr_show_log_level - Show the adapter's error logging level |
| 2010 | * @class_dev: class device struct |
| 2011 | * @buf: buffer |
| 2012 | * |
| 2013 | * Return value: |
| 2014 | * number of bytes printed to buffer |
| 2015 | **/ |
| 2016 | static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf) |
| 2017 | { |
| 2018 | struct Scsi_Host *shost = class_to_shost(class_dev); |
| 2019 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| 2020 | unsigned long lock_flags = 0; |
| 2021 | int len; |
| 2022 | |
| 2023 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 2024 | len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); |
| 2025 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2026 | return len; |
| 2027 | } |
| 2028 | |
| 2029 | /** |
| 2030 | * ipr_store_log_level - Change the adapter's error logging level |
| 2031 | * @class_dev: class device struct |
| 2032 | * @buf: buffer |
| 2033 | * |
| 2034 | * Return value: |
| 2035 | * number of bytes printed to buffer |
| 2036 | **/ |
| 2037 | static ssize_t ipr_store_log_level(struct class_device *class_dev, |
| 2038 | const char *buf, size_t count) |
| 2039 | { |
| 2040 | struct Scsi_Host *shost = class_to_shost(class_dev); |
| 2041 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| 2042 | unsigned long lock_flags = 0; |
| 2043 | |
| 2044 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 2045 | ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); |
| 2046 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2047 | return strlen(buf); |
| 2048 | } |
| 2049 | |
| 2050 | static struct class_device_attribute ipr_log_level_attr = { |
| 2051 | .attr = { |
| 2052 | .name = "log_level", |
| 2053 | .mode = S_IRUGO | S_IWUSR, |
| 2054 | }, |
| 2055 | .show = ipr_show_log_level, |
| 2056 | .store = ipr_store_log_level |
| 2057 | }; |
| 2058 | |
| 2059 | /** |
| 2060 | * ipr_store_diagnostics - IOA Diagnostics interface |
| 2061 | * @class_dev: class_device struct |
| 2062 | * @buf: buffer |
| 2063 | * @count: buffer size |
| 2064 | * |
| 2065 | * This function will reset the adapter and wait a reasonable |
| 2066 | * amount of time for any errors that the adapter might log. |
| 2067 | * |
| 2068 | * Return value: |
| 2069 | * count on success / other on failure |
| 2070 | **/ |
| 2071 | static ssize_t ipr_store_diagnostics(struct class_device *class_dev, |
| 2072 | const char *buf, size_t count) |
| 2073 | { |
| 2074 | struct Scsi_Host *shost = class_to_shost(class_dev); |
| 2075 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| 2076 | unsigned long lock_flags = 0; |
| 2077 | int rc = count; |
| 2078 | |
| 2079 | if (!capable(CAP_SYS_ADMIN)) |
| 2080 | return -EACCES; |
| 2081 | |
| 2082 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
| 2083 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 2084 | ioa_cfg->errors_logged = 0; |
| 2085 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); |
| 2086 | |
| 2087 | if (ioa_cfg->in_reset_reload) { |
| 2088 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2089 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
| 2090 | |
| 2091 | /* Wait for a second for any errors to be logged */ |
| 2092 | msleep(1000); |
| 2093 | } else { |
| 2094 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2095 | return -EIO; |
| 2096 | } |
| 2097 | |
| 2098 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 2099 | if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) |
| 2100 | rc = -EIO; |
| 2101 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2102 | |
| 2103 | return rc; |
| 2104 | } |
| 2105 | |
| 2106 | static struct class_device_attribute ipr_diagnostics_attr = { |
| 2107 | .attr = { |
| 2108 | .name = "run_diagnostics", |
| 2109 | .mode = S_IWUSR, |
| 2110 | }, |
| 2111 | .store = ipr_store_diagnostics |
| 2112 | }; |
| 2113 | |
| 2114 | /** |
| 2115 | * ipr_store_reset_adapter - Reset the adapter |
| 2116 | * @class_dev: class_device struct |
| 2117 | * @buf: buffer |
| 2118 | * @count: buffer size |
| 2119 | * |
| 2120 | * This function will reset the adapter. |
| 2121 | * |
| 2122 | * Return value: |
| 2123 | * count on success / other on failure |
| 2124 | **/ |
| 2125 | static ssize_t ipr_store_reset_adapter(struct class_device *class_dev, |
| 2126 | const char *buf, size_t count) |
| 2127 | { |
| 2128 | struct Scsi_Host *shost = class_to_shost(class_dev); |
| 2129 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| 2130 | unsigned long lock_flags; |
| 2131 | int result = count; |
| 2132 | |
| 2133 | if (!capable(CAP_SYS_ADMIN)) |
| 2134 | return -EACCES; |
| 2135 | |
| 2136 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 2137 | if (!ioa_cfg->in_reset_reload) |
| 2138 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); |
| 2139 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2140 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
| 2141 | |
| 2142 | return result; |
| 2143 | } |
| 2144 | |
| 2145 | static struct class_device_attribute ipr_ioa_reset_attr = { |
| 2146 | .attr = { |
| 2147 | .name = "reset_host", |
| 2148 | .mode = S_IWUSR, |
| 2149 | }, |
| 2150 | .store = ipr_store_reset_adapter |
| 2151 | }; |
| 2152 | |
| 2153 | /** |
| 2154 | * ipr_alloc_ucode_buffer - Allocates a microcode download buffer |
| 2155 | * @buf_len: buffer length |
| 2156 | * |
| 2157 | * Allocates a DMA'able buffer in chunks and assembles a scatter/gather |
| 2158 | * list to use for microcode download |
| 2159 | * |
| 2160 | * Return value: |
| 2161 | * pointer to sglist / NULL on failure |
| 2162 | **/ |
| 2163 | static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) |
| 2164 | { |
| 2165 | int sg_size, order, bsize_elem, num_elem, i, j; |
| 2166 | struct ipr_sglist *sglist; |
| 2167 | struct scatterlist *scatterlist; |
| 2168 | struct page *page; |
| 2169 | |
| 2170 | /* Get the minimum size per scatter/gather element */ |
| 2171 | sg_size = buf_len / (IPR_MAX_SGLIST - 1); |
| 2172 | |
| 2173 | /* Get the actual size per element */ |
| 2174 | order = get_order(sg_size); |
| 2175 | |
| 2176 | /* Determine the actual number of bytes per element */ |
| 2177 | bsize_elem = PAGE_SIZE * (1 << order); |
| 2178 | |
| 2179 | /* Determine the actual number of sg entries needed */ |
| 2180 | if (buf_len % bsize_elem) |
| 2181 | num_elem = (buf_len / bsize_elem) + 1; |
| 2182 | else |
| 2183 | num_elem = buf_len / bsize_elem; |
| 2184 | |
| 2185 | /* Allocate a scatter/gather list for the DMA */ |
| 2186 | sglist = kmalloc(sizeof(struct ipr_sglist) + |
| 2187 | (sizeof(struct scatterlist) * (num_elem - 1)), |
| 2188 | GFP_KERNEL); |
| 2189 | |
| 2190 | if (sglist == NULL) { |
| 2191 | ipr_trace; |
| 2192 | return NULL; |
| 2193 | } |
| 2194 | |
| 2195 | memset(sglist, 0, sizeof(struct ipr_sglist) + |
| 2196 | (sizeof(struct scatterlist) * (num_elem - 1))); |
| 2197 | |
| 2198 | scatterlist = sglist->scatterlist; |
| 2199 | |
| 2200 | sglist->order = order; |
| 2201 | sglist->num_sg = num_elem; |
| 2202 | |
| 2203 | /* Allocate a bunch of sg elements */ |
| 2204 | for (i = 0; i < num_elem; i++) { |
| 2205 | page = alloc_pages(GFP_KERNEL, order); |
| 2206 | if (!page) { |
| 2207 | ipr_trace; |
| 2208 | |
| 2209 | /* Free up what we already allocated */ |
| 2210 | for (j = i - 1; j >= 0; j--) |
| 2211 | __free_pages(scatterlist[j].page, order); |
| 2212 | kfree(sglist); |
| 2213 | return NULL; |
| 2214 | } |
| 2215 | |
| 2216 | scatterlist[i].page = page; |
| 2217 | } |
| 2218 | |
| 2219 | return sglist; |
| 2220 | } |
| 2221 | |
| 2222 | /** |
| 2223 | * ipr_free_ucode_buffer - Frees a microcode download buffer |
| 2224 | * @p_dnld: scatter/gather list pointer |
| 2225 | * |
| 2226 | * Free a DMA'able ucode download buffer previously allocated with |
| 2227 | * ipr_alloc_ucode_buffer |
| 2228 | * |
| 2229 | * Return value: |
| 2230 | * nothing |
| 2231 | **/ |
| 2232 | static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) |
| 2233 | { |
| 2234 | int i; |
| 2235 | |
| 2236 | for (i = 0; i < sglist->num_sg; i++) |
| 2237 | __free_pages(sglist->scatterlist[i].page, sglist->order); |
| 2238 | |
| 2239 | kfree(sglist); |
| 2240 | } |
| 2241 | |
| 2242 | /** |
| 2243 | * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer |
| 2244 | * @sglist: scatter/gather list pointer |
| 2245 | * @buffer: buffer pointer |
| 2246 | * @len: buffer length |
| 2247 | * |
| 2248 | * Copy a microcode image from a user buffer into a buffer allocated by |
| 2249 | * ipr_alloc_ucode_buffer |
| 2250 | * |
| 2251 | * Return value: |
| 2252 | * 0 on success / other on failure |
| 2253 | **/ |
| 2254 | static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, |
| 2255 | u8 *buffer, u32 len) |
| 2256 | { |
| 2257 | int bsize_elem, i, result = 0; |
| 2258 | struct scatterlist *scatterlist; |
| 2259 | void *kaddr; |
| 2260 | |
| 2261 | /* Determine the actual number of bytes per element */ |
| 2262 | bsize_elem = PAGE_SIZE * (1 << sglist->order); |
| 2263 | |
| 2264 | scatterlist = sglist->scatterlist; |
| 2265 | |
| 2266 | for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { |
| 2267 | kaddr = kmap(scatterlist[i].page); |
| 2268 | memcpy(kaddr, buffer, bsize_elem); |
| 2269 | kunmap(scatterlist[i].page); |
| 2270 | |
| 2271 | scatterlist[i].length = bsize_elem; |
| 2272 | |
| 2273 | if (result != 0) { |
| 2274 | ipr_trace; |
| 2275 | return result; |
| 2276 | } |
| 2277 | } |
| 2278 | |
| 2279 | if (len % bsize_elem) { |
| 2280 | kaddr = kmap(scatterlist[i].page); |
| 2281 | memcpy(kaddr, buffer, len % bsize_elem); |
| 2282 | kunmap(scatterlist[i].page); |
| 2283 | |
| 2284 | scatterlist[i].length = len % bsize_elem; |
| 2285 | } |
| 2286 | |
| 2287 | sglist->buffer_len = len; |
| 2288 | return result; |
| 2289 | } |
| 2290 | |
| 2291 | /** |
| 2292 | * ipr_map_ucode_buffer - Map a microcode download buffer |
| 2293 | * @ipr_cmd: ipr command struct |
| 2294 | * @sglist: scatter/gather list |
| 2295 | * @len: total length of download buffer |
| 2296 | * |
| 2297 | * Maps a microcode download scatter/gather list for DMA and |
| 2298 | * builds the IOADL. |
| 2299 | * |
| 2300 | * Return value: |
| 2301 | * 0 on success / -EIO on failure |
| 2302 | **/ |
| 2303 | static int ipr_map_ucode_buffer(struct ipr_cmnd *ipr_cmd, |
| 2304 | struct ipr_sglist *sglist, int len) |
| 2305 | { |
| 2306 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 2307 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| 2308 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; |
| 2309 | struct scatterlist *scatterlist = sglist->scatterlist; |
| 2310 | int i; |
| 2311 | |
| 2312 | ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, scatterlist, |
| 2313 | sglist->num_sg, DMA_TO_DEVICE); |
| 2314 | |
| 2315 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; |
| 2316 | ioarcb->write_data_transfer_length = cpu_to_be32(len); |
| 2317 | ioarcb->write_ioadl_len = |
| 2318 | cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); |
| 2319 | |
| 2320 | for (i = 0; i < ipr_cmd->dma_use_sg; i++) { |
| 2321 | ioadl[i].flags_and_data_len = |
| 2322 | cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); |
| 2323 | ioadl[i].address = |
| 2324 | cpu_to_be32(sg_dma_address(&scatterlist[i])); |
| 2325 | } |
| 2326 | |
| 2327 | if (likely(ipr_cmd->dma_use_sg)) { |
| 2328 | ioadl[i-1].flags_and_data_len |= |
| 2329 | cpu_to_be32(IPR_IOADL_FLAGS_LAST); |
| 2330 | } |
| 2331 | else { |
| 2332 | dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); |
| 2333 | return -EIO; |
| 2334 | } |
| 2335 | |
| 2336 | return 0; |
| 2337 | } |
| 2338 | |
| 2339 | /** |
| 2340 | * ipr_store_update_fw - Update the firmware on the adapter |
| 2341 | * @class_dev: class_device struct |
| 2342 | * @buf: buffer |
| 2343 | * @count: buffer size |
| 2344 | * |
| 2345 | * This function will update the firmware on the adapter. |
| 2346 | * |
| 2347 | * Return value: |
| 2348 | * count on success / other on failure |
| 2349 | **/ |
| 2350 | static ssize_t ipr_store_update_fw(struct class_device *class_dev, |
| 2351 | const char *buf, size_t count) |
| 2352 | { |
| 2353 | struct Scsi_Host *shost = class_to_shost(class_dev); |
| 2354 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| 2355 | struct ipr_ucode_image_header *image_hdr; |
| 2356 | const struct firmware *fw_entry; |
| 2357 | struct ipr_sglist *sglist; |
| 2358 | unsigned long lock_flags; |
| 2359 | char fname[100]; |
| 2360 | char *src; |
| 2361 | int len, result, dnld_size; |
| 2362 | |
| 2363 | if (!capable(CAP_SYS_ADMIN)) |
| 2364 | return -EACCES; |
| 2365 | |
| 2366 | len = snprintf(fname, 99, "%s", buf); |
| 2367 | fname[len-1] = '\0'; |
| 2368 | |
| 2369 | if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { |
| 2370 | dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); |
| 2371 | return -EIO; |
| 2372 | } |
| 2373 | |
| 2374 | image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; |
| 2375 | |
| 2376 | if (be32_to_cpu(image_hdr->header_length) > fw_entry->size || |
| 2377 | (ioa_cfg->vpd_cbs->page3_data.card_type && |
| 2378 | ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) { |
| 2379 | dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n"); |
| 2380 | release_firmware(fw_entry); |
| 2381 | return -EINVAL; |
| 2382 | } |
| 2383 | |
| 2384 | src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); |
| 2385 | dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); |
| 2386 | sglist = ipr_alloc_ucode_buffer(dnld_size); |
| 2387 | |
| 2388 | if (!sglist) { |
| 2389 | dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); |
| 2390 | release_firmware(fw_entry); |
| 2391 | return -ENOMEM; |
| 2392 | } |
| 2393 | |
| 2394 | result = ipr_copy_ucode_buffer(sglist, src, dnld_size); |
| 2395 | |
| 2396 | if (result) { |
| 2397 | dev_err(&ioa_cfg->pdev->dev, |
| 2398 | "Microcode buffer copy to DMA buffer failed\n"); |
| 2399 | ipr_free_ucode_buffer(sglist); |
| 2400 | release_firmware(fw_entry); |
| 2401 | return result; |
| 2402 | } |
| 2403 | |
| 2404 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 2405 | |
| 2406 | if (ioa_cfg->ucode_sglist) { |
| 2407 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2408 | dev_err(&ioa_cfg->pdev->dev, |
| 2409 | "Microcode download already in progress\n"); |
| 2410 | ipr_free_ucode_buffer(sglist); |
| 2411 | release_firmware(fw_entry); |
| 2412 | return -EIO; |
| 2413 | } |
| 2414 | |
| 2415 | ioa_cfg->ucode_sglist = sglist; |
| 2416 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); |
| 2417 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2418 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
| 2419 | |
| 2420 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 2421 | ioa_cfg->ucode_sglist = NULL; |
| 2422 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2423 | |
| 2424 | ipr_free_ucode_buffer(sglist); |
| 2425 | release_firmware(fw_entry); |
| 2426 | |
| 2427 | return count; |
| 2428 | } |
| 2429 | |
| 2430 | static struct class_device_attribute ipr_update_fw_attr = { |
| 2431 | .attr = { |
| 2432 | .name = "update_fw", |
| 2433 | .mode = S_IWUSR, |
| 2434 | }, |
| 2435 | .store = ipr_store_update_fw |
| 2436 | }; |
| 2437 | |
| 2438 | static struct class_device_attribute *ipr_ioa_attrs[] = { |
| 2439 | &ipr_fw_version_attr, |
| 2440 | &ipr_log_level_attr, |
| 2441 | &ipr_diagnostics_attr, |
| 2442 | &ipr_ioa_reset_attr, |
| 2443 | &ipr_update_fw_attr, |
| 2444 | NULL, |
| 2445 | }; |
| 2446 | |
| 2447 | #ifdef CONFIG_SCSI_IPR_DUMP |
| 2448 | /** |
| 2449 | * ipr_read_dump - Dump the adapter |
| 2450 | * @kobj: kobject struct |
| 2451 | * @buf: buffer |
| 2452 | * @off: offset |
| 2453 | * @count: buffer size |
| 2454 | * |
| 2455 | * Return value: |
| 2456 | * number of bytes printed to buffer |
| 2457 | **/ |
| 2458 | static ssize_t ipr_read_dump(struct kobject *kobj, char *buf, |
| 2459 | loff_t off, size_t count) |
| 2460 | { |
| 2461 | struct class_device *cdev = container_of(kobj,struct class_device,kobj); |
| 2462 | struct Scsi_Host *shost = class_to_shost(cdev); |
| 2463 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| 2464 | struct ipr_dump *dump; |
| 2465 | unsigned long lock_flags = 0; |
| 2466 | char *src; |
| 2467 | int len; |
| 2468 | size_t rc = count; |
| 2469 | |
| 2470 | if (!capable(CAP_SYS_ADMIN)) |
| 2471 | return -EACCES; |
| 2472 | |
| 2473 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 2474 | dump = ioa_cfg->dump; |
| 2475 | |
| 2476 | if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { |
| 2477 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2478 | return 0; |
| 2479 | } |
| 2480 | kref_get(&dump->kref); |
| 2481 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2482 | |
| 2483 | if (off > dump->driver_dump.hdr.len) { |
| 2484 | kref_put(&dump->kref, ipr_release_dump); |
| 2485 | return 0; |
| 2486 | } |
| 2487 | |
| 2488 | if (off + count > dump->driver_dump.hdr.len) { |
| 2489 | count = dump->driver_dump.hdr.len - off; |
| 2490 | rc = count; |
| 2491 | } |
| 2492 | |
| 2493 | if (count && off < sizeof(dump->driver_dump)) { |
| 2494 | if (off + count > sizeof(dump->driver_dump)) |
| 2495 | len = sizeof(dump->driver_dump) - off; |
| 2496 | else |
| 2497 | len = count; |
| 2498 | src = (u8 *)&dump->driver_dump + off; |
| 2499 | memcpy(buf, src, len); |
| 2500 | buf += len; |
| 2501 | off += len; |
| 2502 | count -= len; |
| 2503 | } |
| 2504 | |
| 2505 | off -= sizeof(dump->driver_dump); |
| 2506 | |
| 2507 | if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) { |
| 2508 | if (off + count > offsetof(struct ipr_ioa_dump, ioa_data)) |
| 2509 | len = offsetof(struct ipr_ioa_dump, ioa_data) - off; |
| 2510 | else |
| 2511 | len = count; |
| 2512 | src = (u8 *)&dump->ioa_dump + off; |
| 2513 | memcpy(buf, src, len); |
| 2514 | buf += len; |
| 2515 | off += len; |
| 2516 | count -= len; |
| 2517 | } |
| 2518 | |
| 2519 | off -= offsetof(struct ipr_ioa_dump, ioa_data); |
| 2520 | |
| 2521 | while (count) { |
| 2522 | if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) |
| 2523 | len = PAGE_ALIGN(off) - off; |
| 2524 | else |
| 2525 | len = count; |
| 2526 | src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; |
| 2527 | src += off & ~PAGE_MASK; |
| 2528 | memcpy(buf, src, len); |
| 2529 | buf += len; |
| 2530 | off += len; |
| 2531 | count -= len; |
| 2532 | } |
| 2533 | |
| 2534 | kref_put(&dump->kref, ipr_release_dump); |
| 2535 | return rc; |
| 2536 | } |
| 2537 | |
| 2538 | /** |
| 2539 | * ipr_alloc_dump - Prepare for adapter dump |
| 2540 | * @ioa_cfg: ioa config struct |
| 2541 | * |
| 2542 | * Return value: |
| 2543 | * 0 on success / other on failure |
| 2544 | **/ |
| 2545 | static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) |
| 2546 | { |
| 2547 | struct ipr_dump *dump; |
| 2548 | unsigned long lock_flags = 0; |
| 2549 | |
| 2550 | ENTER; |
| 2551 | dump = kmalloc(sizeof(struct ipr_dump), GFP_KERNEL); |
| 2552 | |
| 2553 | if (!dump) { |
| 2554 | ipr_err("Dump memory allocation failed\n"); |
| 2555 | return -ENOMEM; |
| 2556 | } |
| 2557 | |
| 2558 | memset(dump, 0, sizeof(struct ipr_dump)); |
| 2559 | kref_init(&dump->kref); |
| 2560 | dump->ioa_cfg = ioa_cfg; |
| 2561 | |
| 2562 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 2563 | |
| 2564 | if (INACTIVE != ioa_cfg->sdt_state) { |
| 2565 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2566 | kfree(dump); |
| 2567 | return 0; |
| 2568 | } |
| 2569 | |
| 2570 | ioa_cfg->dump = dump; |
| 2571 | ioa_cfg->sdt_state = WAIT_FOR_DUMP; |
| 2572 | if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) { |
| 2573 | ioa_cfg->dump_taken = 1; |
| 2574 | schedule_work(&ioa_cfg->work_q); |
| 2575 | } |
| 2576 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2577 | |
| 2578 | LEAVE; |
| 2579 | return 0; |
| 2580 | } |
| 2581 | |
| 2582 | /** |
| 2583 | * ipr_free_dump - Free adapter dump memory |
| 2584 | * @ioa_cfg: ioa config struct |
| 2585 | * |
| 2586 | * Return value: |
| 2587 | * 0 on success / other on failure |
| 2588 | **/ |
| 2589 | static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) |
| 2590 | { |
| 2591 | struct ipr_dump *dump; |
| 2592 | unsigned long lock_flags = 0; |
| 2593 | |
| 2594 | ENTER; |
| 2595 | |
| 2596 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 2597 | dump = ioa_cfg->dump; |
| 2598 | if (!dump) { |
| 2599 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2600 | return 0; |
| 2601 | } |
| 2602 | |
| 2603 | ioa_cfg->dump = NULL; |
| 2604 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2605 | |
| 2606 | kref_put(&dump->kref, ipr_release_dump); |
| 2607 | |
| 2608 | LEAVE; |
| 2609 | return 0; |
| 2610 | } |
| 2611 | |
| 2612 | /** |
| 2613 | * ipr_write_dump - Setup dump state of adapter |
| 2614 | * @kobj: kobject struct |
| 2615 | * @buf: buffer |
| 2616 | * @off: offset |
| 2617 | * @count: buffer size |
| 2618 | * |
| 2619 | * Return value: |
| 2620 | * number of bytes printed to buffer |
| 2621 | **/ |
| 2622 | static ssize_t ipr_write_dump(struct kobject *kobj, char *buf, |
| 2623 | loff_t off, size_t count) |
| 2624 | { |
| 2625 | struct class_device *cdev = container_of(kobj,struct class_device,kobj); |
| 2626 | struct Scsi_Host *shost = class_to_shost(cdev); |
| 2627 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| 2628 | int rc; |
| 2629 | |
| 2630 | if (!capable(CAP_SYS_ADMIN)) |
| 2631 | return -EACCES; |
| 2632 | |
| 2633 | if (buf[0] == '1') |
| 2634 | rc = ipr_alloc_dump(ioa_cfg); |
| 2635 | else if (buf[0] == '0') |
| 2636 | rc = ipr_free_dump(ioa_cfg); |
| 2637 | else |
| 2638 | return -EINVAL; |
| 2639 | |
| 2640 | if (rc) |
| 2641 | return rc; |
| 2642 | else |
| 2643 | return count; |
| 2644 | } |
| 2645 | |
| 2646 | static struct bin_attribute ipr_dump_attr = { |
| 2647 | .attr = { |
| 2648 | .name = "dump", |
| 2649 | .mode = S_IRUSR | S_IWUSR, |
| 2650 | }, |
| 2651 | .size = 0, |
| 2652 | .read = ipr_read_dump, |
| 2653 | .write = ipr_write_dump |
| 2654 | }; |
| 2655 | #else |
| 2656 | static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; |
| 2657 | #endif |
| 2658 | |
| 2659 | /** |
| 2660 | * ipr_change_queue_depth - Change the device's queue depth |
| 2661 | * @sdev: scsi device struct |
| 2662 | * @qdepth: depth to set |
| 2663 | * |
| 2664 | * Return value: |
| 2665 | * actual depth set |
| 2666 | **/ |
| 2667 | static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) |
| 2668 | { |
| 2669 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); |
| 2670 | return sdev->queue_depth; |
| 2671 | } |
| 2672 | |
| 2673 | /** |
| 2674 | * ipr_change_queue_type - Change the device's queue type |
| 2675 | * @dsev: scsi device struct |
| 2676 | * @tag_type: type of tags to use |
| 2677 | * |
| 2678 | * Return value: |
| 2679 | * actual queue type set |
| 2680 | **/ |
| 2681 | static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type) |
| 2682 | { |
| 2683 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; |
| 2684 | struct ipr_resource_entry *res; |
| 2685 | unsigned long lock_flags = 0; |
| 2686 | |
| 2687 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 2688 | res = (struct ipr_resource_entry *)sdev->hostdata; |
| 2689 | |
| 2690 | if (res) { |
| 2691 | if (ipr_is_gscsi(res) && sdev->tagged_supported) { |
| 2692 | /* |
| 2693 | * We don't bother quiescing the device here since the |
| 2694 | * adapter firmware does it for us. |
| 2695 | */ |
| 2696 | scsi_set_tag_type(sdev, tag_type); |
| 2697 | |
| 2698 | if (tag_type) |
| 2699 | scsi_activate_tcq(sdev, sdev->queue_depth); |
| 2700 | else |
| 2701 | scsi_deactivate_tcq(sdev, sdev->queue_depth); |
| 2702 | } else |
| 2703 | tag_type = 0; |
| 2704 | } else |
| 2705 | tag_type = 0; |
| 2706 | |
| 2707 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2708 | return tag_type; |
| 2709 | } |
| 2710 | |
| 2711 | /** |
| 2712 | * ipr_show_adapter_handle - Show the adapter's resource handle for this device |
| 2713 | * @dev: device struct |
| 2714 | * @buf: buffer |
| 2715 | * |
| 2716 | * Return value: |
| 2717 | * number of bytes printed to buffer |
| 2718 | **/ |
| 2719 | static ssize_t ipr_show_adapter_handle(struct device *dev, char *buf) |
| 2720 | { |
| 2721 | struct scsi_device *sdev = to_scsi_device(dev); |
| 2722 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; |
| 2723 | struct ipr_resource_entry *res; |
| 2724 | unsigned long lock_flags = 0; |
| 2725 | ssize_t len = -ENXIO; |
| 2726 | |
| 2727 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 2728 | res = (struct ipr_resource_entry *)sdev->hostdata; |
| 2729 | if (res) |
| 2730 | len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle); |
| 2731 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2732 | return len; |
| 2733 | } |
| 2734 | |
| 2735 | static struct device_attribute ipr_adapter_handle_attr = { |
| 2736 | .attr = { |
| 2737 | .name = "adapter_handle", |
| 2738 | .mode = S_IRUSR, |
| 2739 | }, |
| 2740 | .show = ipr_show_adapter_handle |
| 2741 | }; |
| 2742 | |
| 2743 | static struct device_attribute *ipr_dev_attrs[] = { |
| 2744 | &ipr_adapter_handle_attr, |
| 2745 | NULL, |
| 2746 | }; |
| 2747 | |
| 2748 | /** |
| 2749 | * ipr_biosparam - Return the HSC mapping |
| 2750 | * @sdev: scsi device struct |
| 2751 | * @block_device: block device pointer |
| 2752 | * @capacity: capacity of the device |
| 2753 | * @parm: Array containing returned HSC values. |
| 2754 | * |
| 2755 | * This function generates the HSC parms that fdisk uses. |
| 2756 | * We want to make sure we return something that places partitions |
| 2757 | * on 4k boundaries for best performance with the IOA. |
| 2758 | * |
| 2759 | * Return value: |
| 2760 | * 0 on success |
| 2761 | **/ |
| 2762 | static int ipr_biosparam(struct scsi_device *sdev, |
| 2763 | struct block_device *block_device, |
| 2764 | sector_t capacity, int *parm) |
| 2765 | { |
| 2766 | int heads, sectors; |
| 2767 | sector_t cylinders; |
| 2768 | |
| 2769 | heads = 128; |
| 2770 | sectors = 32; |
| 2771 | |
| 2772 | cylinders = capacity; |
| 2773 | sector_div(cylinders, (128 * 32)); |
| 2774 | |
| 2775 | /* return result */ |
| 2776 | parm[0] = heads; |
| 2777 | parm[1] = sectors; |
| 2778 | parm[2] = cylinders; |
| 2779 | |
| 2780 | return 0; |
| 2781 | } |
| 2782 | |
| 2783 | /** |
| 2784 | * ipr_slave_destroy - Unconfigure a SCSI device |
| 2785 | * @sdev: scsi device struct |
| 2786 | * |
| 2787 | * Return value: |
| 2788 | * nothing |
| 2789 | **/ |
| 2790 | static void ipr_slave_destroy(struct scsi_device *sdev) |
| 2791 | { |
| 2792 | struct ipr_resource_entry *res; |
| 2793 | struct ipr_ioa_cfg *ioa_cfg; |
| 2794 | unsigned long lock_flags = 0; |
| 2795 | |
| 2796 | ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; |
| 2797 | |
| 2798 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 2799 | res = (struct ipr_resource_entry *) sdev->hostdata; |
| 2800 | if (res) { |
| 2801 | sdev->hostdata = NULL; |
| 2802 | res->sdev = NULL; |
| 2803 | } |
| 2804 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2805 | } |
| 2806 | |
| 2807 | /** |
| 2808 | * ipr_slave_configure - Configure a SCSI device |
| 2809 | * @sdev: scsi device struct |
| 2810 | * |
| 2811 | * This function configures the specified scsi device. |
| 2812 | * |
| 2813 | * Return value: |
| 2814 | * 0 on success |
| 2815 | **/ |
| 2816 | static int ipr_slave_configure(struct scsi_device *sdev) |
| 2817 | { |
| 2818 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; |
| 2819 | struct ipr_resource_entry *res; |
| 2820 | unsigned long lock_flags = 0; |
| 2821 | |
| 2822 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 2823 | res = sdev->hostdata; |
| 2824 | if (res) { |
| 2825 | if (ipr_is_af_dasd_device(res)) |
| 2826 | sdev->type = TYPE_RAID; |
| 2827 | if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) |
| 2828 | sdev->scsi_level = 4; |
| 2829 | if (ipr_is_vset_device(res)) { |
| 2830 | sdev->timeout = IPR_VSET_RW_TIMEOUT; |
| 2831 | blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); |
| 2832 | } |
| 2833 | if (IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data)) |
| 2834 | sdev->allow_restart = 1; |
| 2835 | scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); |
| 2836 | } |
| 2837 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2838 | return 0; |
| 2839 | } |
| 2840 | |
| 2841 | /** |
| 2842 | * ipr_slave_alloc - Prepare for commands to a device. |
| 2843 | * @sdev: scsi device struct |
| 2844 | * |
| 2845 | * This function saves a pointer to the resource entry |
| 2846 | * in the scsi device struct if the device exists. We |
| 2847 | * can then use this pointer in ipr_queuecommand when |
| 2848 | * handling new commands. |
| 2849 | * |
| 2850 | * Return value: |
| 2851 | * 0 on success |
| 2852 | **/ |
| 2853 | static int ipr_slave_alloc(struct scsi_device *sdev) |
| 2854 | { |
| 2855 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; |
| 2856 | struct ipr_resource_entry *res; |
| 2857 | unsigned long lock_flags; |
| 2858 | |
| 2859 | sdev->hostdata = NULL; |
| 2860 | |
| 2861 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 2862 | |
| 2863 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { |
| 2864 | if ((res->cfgte.res_addr.bus == sdev->channel) && |
| 2865 | (res->cfgte.res_addr.target == sdev->id) && |
| 2866 | (res->cfgte.res_addr.lun == sdev->lun)) { |
| 2867 | res->sdev = sdev; |
| 2868 | res->add_to_ml = 0; |
| 2869 | res->in_erp = 0; |
| 2870 | sdev->hostdata = res; |
| 2871 | res->needs_sync_complete = 1; |
| 2872 | break; |
| 2873 | } |
| 2874 | } |
| 2875 | |
| 2876 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 2877 | |
| 2878 | return 0; |
| 2879 | } |
| 2880 | |
| 2881 | /** |
| 2882 | * ipr_eh_host_reset - Reset the host adapter |
| 2883 | * @scsi_cmd: scsi command struct |
| 2884 | * |
| 2885 | * Return value: |
| 2886 | * SUCCESS / FAILED |
| 2887 | **/ |
Jeff Garzik | df0ae24 | 2005-05-28 07:57:14 -0400 | [diff] [blame^] | 2888 | static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2889 | { |
| 2890 | struct ipr_ioa_cfg *ioa_cfg; |
| 2891 | int rc; |
| 2892 | |
| 2893 | ENTER; |
| 2894 | ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; |
| 2895 | |
| 2896 | dev_err(&ioa_cfg->pdev->dev, |
| 2897 | "Adapter being reset as a result of error recovery.\n"); |
| 2898 | |
| 2899 | if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) |
| 2900 | ioa_cfg->sdt_state = GET_DUMP; |
| 2901 | |
| 2902 | rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV); |
| 2903 | |
| 2904 | LEAVE; |
| 2905 | return rc; |
| 2906 | } |
| 2907 | |
Jeff Garzik | df0ae24 | 2005-05-28 07:57:14 -0400 | [diff] [blame^] | 2908 | static int ipr_eh_host_reset(struct scsi_cmnd * cmd) |
| 2909 | { |
| 2910 | int rc; |
| 2911 | |
| 2912 | spin_lock_irq(cmd->device->host->host_lock); |
| 2913 | rc = __ipr_eh_host_reset(cmd); |
| 2914 | spin_unlock_irq(cmd->device->host->host_lock); |
| 2915 | |
| 2916 | return rc; |
| 2917 | } |
| 2918 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2919 | /** |
| 2920 | * ipr_eh_dev_reset - Reset the device |
| 2921 | * @scsi_cmd: scsi command struct |
| 2922 | * |
| 2923 | * This function issues a device reset to the affected device. |
| 2924 | * A LUN reset will be sent to the device first. If that does |
| 2925 | * not work, a target reset will be sent. |
| 2926 | * |
| 2927 | * Return value: |
| 2928 | * SUCCESS / FAILED |
| 2929 | **/ |
Jeff Garzik | 94d0e7b | 2005-05-28 07:55:48 -0400 | [diff] [blame] | 2930 | static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2931 | { |
| 2932 | struct ipr_cmnd *ipr_cmd; |
| 2933 | struct ipr_ioa_cfg *ioa_cfg; |
| 2934 | struct ipr_resource_entry *res; |
| 2935 | struct ipr_cmd_pkt *cmd_pkt; |
| 2936 | u32 ioasc; |
| 2937 | |
| 2938 | ENTER; |
| 2939 | ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; |
| 2940 | res = scsi_cmd->device->hostdata; |
| 2941 | |
| 2942 | if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res))) |
| 2943 | return FAILED; |
| 2944 | |
| 2945 | /* |
| 2946 | * If we are currently going through reset/reload, return failed. This will force the |
| 2947 | * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the |
| 2948 | * reset to complete |
| 2949 | */ |
| 2950 | if (ioa_cfg->in_reset_reload) |
| 2951 | return FAILED; |
| 2952 | if (ioa_cfg->ioa_is_dead) |
| 2953 | return FAILED; |
| 2954 | |
| 2955 | list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { |
| 2956 | if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) { |
| 2957 | if (ipr_cmd->scsi_cmd) |
| 2958 | ipr_cmd->done = ipr_scsi_eh_done; |
| 2959 | } |
| 2960 | } |
| 2961 | |
| 2962 | res->resetting_device = 1; |
| 2963 | |
| 2964 | ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); |
| 2965 | |
| 2966 | ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; |
| 2967 | cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; |
| 2968 | cmd_pkt->request_type = IPR_RQTYPE_IOACMD; |
| 2969 | cmd_pkt->cdb[0] = IPR_RESET_DEVICE; |
| 2970 | |
| 2971 | ipr_sdev_err(scsi_cmd->device, "Resetting device\n"); |
| 2972 | ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); |
| 2973 | |
| 2974 | ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| 2975 | |
| 2976 | res->resetting_device = 0; |
| 2977 | |
| 2978 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| 2979 | |
| 2980 | LEAVE; |
| 2981 | return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); |
| 2982 | } |
| 2983 | |
Jeff Garzik | 94d0e7b | 2005-05-28 07:55:48 -0400 | [diff] [blame] | 2984 | static int ipr_eh_dev_reset(struct scsi_cmnd * cmd) |
| 2985 | { |
| 2986 | int rc; |
| 2987 | |
| 2988 | spin_lock_irq(cmd->device->host->host_lock); |
| 2989 | rc = __ipr_eh_dev_reset(cmd); |
| 2990 | spin_unlock_irq(cmd->device->host->host_lock); |
| 2991 | |
| 2992 | return rc; |
| 2993 | } |
| 2994 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2995 | /** |
| 2996 | * ipr_bus_reset_done - Op done function for bus reset. |
| 2997 | * @ipr_cmd: ipr command struct |
| 2998 | * |
| 2999 | * This function is the op done function for a bus reset |
| 3000 | * |
| 3001 | * Return value: |
| 3002 | * none |
| 3003 | **/ |
| 3004 | static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) |
| 3005 | { |
| 3006 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 3007 | struct ipr_resource_entry *res; |
| 3008 | |
| 3009 | ENTER; |
| 3010 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { |
| 3011 | if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle, |
| 3012 | sizeof(res->cfgte.res_handle))) { |
| 3013 | scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus); |
| 3014 | break; |
| 3015 | } |
| 3016 | } |
| 3017 | |
| 3018 | /* |
| 3019 | * If abort has not completed, indicate the reset has, else call the |
| 3020 | * abort's done function to wake the sleeping eh thread |
| 3021 | */ |
| 3022 | if (ipr_cmd->sibling->sibling) |
| 3023 | ipr_cmd->sibling->sibling = NULL; |
| 3024 | else |
| 3025 | ipr_cmd->sibling->done(ipr_cmd->sibling); |
| 3026 | |
| 3027 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| 3028 | LEAVE; |
| 3029 | } |
| 3030 | |
| 3031 | /** |
| 3032 | * ipr_abort_timeout - An abort task has timed out |
| 3033 | * @ipr_cmd: ipr command struct |
| 3034 | * |
| 3035 | * This function handles when an abort task times out. If this |
| 3036 | * happens we issue a bus reset since we have resources tied |
| 3037 | * up that must be freed before returning to the midlayer. |
| 3038 | * |
| 3039 | * Return value: |
| 3040 | * none |
| 3041 | **/ |
| 3042 | static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) |
| 3043 | { |
| 3044 | struct ipr_cmnd *reset_cmd; |
| 3045 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 3046 | struct ipr_cmd_pkt *cmd_pkt; |
| 3047 | unsigned long lock_flags = 0; |
| 3048 | |
| 3049 | ENTER; |
| 3050 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 3051 | if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { |
| 3052 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 3053 | return; |
| 3054 | } |
| 3055 | |
| 3056 | ipr_sdev_err(ipr_cmd->u.sdev, "Abort timed out. Resetting bus\n"); |
| 3057 | reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); |
| 3058 | ipr_cmd->sibling = reset_cmd; |
| 3059 | reset_cmd->sibling = ipr_cmd; |
| 3060 | reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; |
| 3061 | cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; |
| 3062 | cmd_pkt->request_type = IPR_RQTYPE_IOACMD; |
| 3063 | cmd_pkt->cdb[0] = IPR_RESET_DEVICE; |
| 3064 | cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; |
| 3065 | |
| 3066 | ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); |
| 3067 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 3068 | LEAVE; |
| 3069 | } |
| 3070 | |
| 3071 | /** |
| 3072 | * ipr_cancel_op - Cancel specified op |
| 3073 | * @scsi_cmd: scsi command struct |
| 3074 | * |
| 3075 | * This function cancels specified op. |
| 3076 | * |
| 3077 | * Return value: |
| 3078 | * SUCCESS / FAILED |
| 3079 | **/ |
| 3080 | static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) |
| 3081 | { |
| 3082 | struct ipr_cmnd *ipr_cmd; |
| 3083 | struct ipr_ioa_cfg *ioa_cfg; |
| 3084 | struct ipr_resource_entry *res; |
| 3085 | struct ipr_cmd_pkt *cmd_pkt; |
| 3086 | u32 ioasc; |
| 3087 | int op_found = 0; |
| 3088 | |
| 3089 | ENTER; |
| 3090 | ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; |
| 3091 | res = scsi_cmd->device->hostdata; |
| 3092 | |
Jeff Garzik | 8fa728a | 2005-05-28 07:54:40 -0400 | [diff] [blame] | 3093 | /* If we are currently going through reset/reload, return failed. |
| 3094 | * This will force the mid-layer to call ipr_eh_host_reset, |
| 3095 | * which will then go to sleep and wait for the reset to complete |
| 3096 | */ |
| 3097 | if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) |
| 3098 | return FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3099 | if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res))) |
| 3100 | return FAILED; |
| 3101 | |
| 3102 | list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { |
| 3103 | if (ipr_cmd->scsi_cmd == scsi_cmd) { |
| 3104 | ipr_cmd->done = ipr_scsi_eh_done; |
| 3105 | op_found = 1; |
| 3106 | break; |
| 3107 | } |
| 3108 | } |
| 3109 | |
| 3110 | if (!op_found) |
| 3111 | return SUCCESS; |
| 3112 | |
| 3113 | ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); |
| 3114 | ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; |
| 3115 | cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; |
| 3116 | cmd_pkt->request_type = IPR_RQTYPE_IOACMD; |
| 3117 | cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; |
| 3118 | ipr_cmd->u.sdev = scsi_cmd->device; |
| 3119 | |
| 3120 | ipr_sdev_err(scsi_cmd->device, "Aborting command: %02X\n", scsi_cmd->cmnd[0]); |
| 3121 | ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); |
| 3122 | ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| 3123 | |
| 3124 | /* |
| 3125 | * If the abort task timed out and we sent a bus reset, we will get |
| 3126 | * one the following responses to the abort |
| 3127 | */ |
| 3128 | if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { |
| 3129 | ioasc = 0; |
| 3130 | ipr_trace; |
| 3131 | } |
| 3132 | |
| 3133 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| 3134 | res->needs_sync_complete = 1; |
| 3135 | |
| 3136 | LEAVE; |
| 3137 | return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); |
| 3138 | } |
| 3139 | |
| 3140 | /** |
| 3141 | * ipr_eh_abort - Abort a single op |
| 3142 | * @scsi_cmd: scsi command struct |
| 3143 | * |
| 3144 | * Return value: |
| 3145 | * SUCCESS / FAILED |
| 3146 | **/ |
| 3147 | static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) |
| 3148 | { |
Jeff Garzik | 8fa728a | 2005-05-28 07:54:40 -0400 | [diff] [blame] | 3149 | unsigned long flags; |
| 3150 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3151 | |
| 3152 | ENTER; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3153 | |
Jeff Garzik | 8fa728a | 2005-05-28 07:54:40 -0400 | [diff] [blame] | 3154 | spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); |
| 3155 | rc = ipr_cancel_op(scsi_cmd); |
| 3156 | spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3157 | |
| 3158 | LEAVE; |
Jeff Garzik | 8fa728a | 2005-05-28 07:54:40 -0400 | [diff] [blame] | 3159 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3160 | } |
| 3161 | |
| 3162 | /** |
| 3163 | * ipr_handle_other_interrupt - Handle "other" interrupts |
| 3164 | * @ioa_cfg: ioa config struct |
| 3165 | * @int_reg: interrupt register |
| 3166 | * |
| 3167 | * Return value: |
| 3168 | * IRQ_NONE / IRQ_HANDLED |
| 3169 | **/ |
| 3170 | static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, |
| 3171 | volatile u32 int_reg) |
| 3172 | { |
| 3173 | irqreturn_t rc = IRQ_HANDLED; |
| 3174 | |
| 3175 | if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { |
| 3176 | /* Mask the interrupt */ |
| 3177 | writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); |
| 3178 | |
| 3179 | /* Clear the interrupt */ |
| 3180 | writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); |
| 3181 | int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); |
| 3182 | |
| 3183 | list_del(&ioa_cfg->reset_cmd->queue); |
| 3184 | del_timer(&ioa_cfg->reset_cmd->timer); |
| 3185 | ipr_reset_ioa_job(ioa_cfg->reset_cmd); |
| 3186 | } else { |
| 3187 | if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) |
| 3188 | ioa_cfg->ioa_unit_checked = 1; |
| 3189 | else |
| 3190 | dev_err(&ioa_cfg->pdev->dev, |
| 3191 | "Permanent IOA failure. 0x%08X\n", int_reg); |
| 3192 | |
| 3193 | if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) |
| 3194 | ioa_cfg->sdt_state = GET_DUMP; |
| 3195 | |
| 3196 | ipr_mask_and_clear_interrupts(ioa_cfg, ~0); |
| 3197 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); |
| 3198 | } |
| 3199 | |
| 3200 | return rc; |
| 3201 | } |
| 3202 | |
| 3203 | /** |
| 3204 | * ipr_isr - Interrupt service routine |
| 3205 | * @irq: irq number |
| 3206 | * @devp: pointer to ioa config struct |
| 3207 | * @regs: pt_regs struct |
| 3208 | * |
| 3209 | * Return value: |
| 3210 | * IRQ_NONE / IRQ_HANDLED |
| 3211 | **/ |
| 3212 | static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs) |
| 3213 | { |
| 3214 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; |
| 3215 | unsigned long lock_flags = 0; |
| 3216 | volatile u32 int_reg, int_mask_reg; |
| 3217 | u32 ioasc; |
| 3218 | u16 cmd_index; |
| 3219 | struct ipr_cmnd *ipr_cmd; |
| 3220 | irqreturn_t rc = IRQ_NONE; |
| 3221 | |
| 3222 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 3223 | |
| 3224 | /* If interrupts are disabled, ignore the interrupt */ |
| 3225 | if (!ioa_cfg->allow_interrupts) { |
| 3226 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 3227 | return IRQ_NONE; |
| 3228 | } |
| 3229 | |
| 3230 | int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); |
| 3231 | int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; |
| 3232 | |
| 3233 | /* If an interrupt on the adapter did not occur, ignore it */ |
| 3234 | if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) { |
| 3235 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 3236 | return IRQ_NONE; |
| 3237 | } |
| 3238 | |
| 3239 | while (1) { |
| 3240 | ipr_cmd = NULL; |
| 3241 | |
| 3242 | while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == |
| 3243 | ioa_cfg->toggle_bit) { |
| 3244 | |
| 3245 | cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & |
| 3246 | IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; |
| 3247 | |
| 3248 | if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { |
| 3249 | ioa_cfg->errors_logged++; |
| 3250 | dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n"); |
| 3251 | |
| 3252 | if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) |
| 3253 | ioa_cfg->sdt_state = GET_DUMP; |
| 3254 | |
| 3255 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); |
| 3256 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 3257 | return IRQ_HANDLED; |
| 3258 | } |
| 3259 | |
| 3260 | ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; |
| 3261 | |
| 3262 | ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| 3263 | |
| 3264 | ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); |
| 3265 | |
| 3266 | list_del(&ipr_cmd->queue); |
| 3267 | del_timer(&ipr_cmd->timer); |
| 3268 | ipr_cmd->done(ipr_cmd); |
| 3269 | |
| 3270 | rc = IRQ_HANDLED; |
| 3271 | |
| 3272 | if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { |
| 3273 | ioa_cfg->hrrq_curr++; |
| 3274 | } else { |
| 3275 | ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; |
| 3276 | ioa_cfg->toggle_bit ^= 1u; |
| 3277 | } |
| 3278 | } |
| 3279 | |
| 3280 | if (ipr_cmd != NULL) { |
| 3281 | /* Clear the PCI interrupt */ |
| 3282 | writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg); |
| 3283 | int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; |
| 3284 | } else |
| 3285 | break; |
| 3286 | } |
| 3287 | |
| 3288 | if (unlikely(rc == IRQ_NONE)) |
| 3289 | rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); |
| 3290 | |
| 3291 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 3292 | return rc; |
| 3293 | } |
| 3294 | |
| 3295 | /** |
| 3296 | * ipr_build_ioadl - Build a scatter/gather list and map the buffer |
| 3297 | * @ioa_cfg: ioa config struct |
| 3298 | * @ipr_cmd: ipr command struct |
| 3299 | * |
| 3300 | * Return value: |
| 3301 | * 0 on success / -1 on failure |
| 3302 | **/ |
| 3303 | static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, |
| 3304 | struct ipr_cmnd *ipr_cmd) |
| 3305 | { |
| 3306 | int i; |
| 3307 | struct scatterlist *sglist; |
| 3308 | u32 length; |
| 3309 | u32 ioadl_flags = 0; |
| 3310 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; |
| 3311 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| 3312 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; |
| 3313 | |
| 3314 | length = scsi_cmd->request_bufflen; |
| 3315 | |
| 3316 | if (length == 0) |
| 3317 | return 0; |
| 3318 | |
| 3319 | if (scsi_cmd->use_sg) { |
| 3320 | ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, |
| 3321 | scsi_cmd->request_buffer, |
| 3322 | scsi_cmd->use_sg, |
| 3323 | scsi_cmd->sc_data_direction); |
| 3324 | |
| 3325 | if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { |
| 3326 | ioadl_flags = IPR_IOADL_FLAGS_WRITE; |
| 3327 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; |
| 3328 | ioarcb->write_data_transfer_length = cpu_to_be32(length); |
| 3329 | ioarcb->write_ioadl_len = |
| 3330 | cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); |
| 3331 | } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { |
| 3332 | ioadl_flags = IPR_IOADL_FLAGS_READ; |
| 3333 | ioarcb->read_data_transfer_length = cpu_to_be32(length); |
| 3334 | ioarcb->read_ioadl_len = |
| 3335 | cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); |
| 3336 | } |
| 3337 | |
| 3338 | sglist = scsi_cmd->request_buffer; |
| 3339 | |
| 3340 | for (i = 0; i < ipr_cmd->dma_use_sg; i++) { |
| 3341 | ioadl[i].flags_and_data_len = |
| 3342 | cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i])); |
| 3343 | ioadl[i].address = |
| 3344 | cpu_to_be32(sg_dma_address(&sglist[i])); |
| 3345 | } |
| 3346 | |
| 3347 | if (likely(ipr_cmd->dma_use_sg)) { |
| 3348 | ioadl[i-1].flags_and_data_len |= |
| 3349 | cpu_to_be32(IPR_IOADL_FLAGS_LAST); |
| 3350 | return 0; |
| 3351 | } else |
| 3352 | dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); |
| 3353 | } else { |
| 3354 | if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { |
| 3355 | ioadl_flags = IPR_IOADL_FLAGS_WRITE; |
| 3356 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; |
| 3357 | ioarcb->write_data_transfer_length = cpu_to_be32(length); |
| 3358 | ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| 3359 | } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { |
| 3360 | ioadl_flags = IPR_IOADL_FLAGS_READ; |
| 3361 | ioarcb->read_data_transfer_length = cpu_to_be32(length); |
| 3362 | ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| 3363 | } |
| 3364 | |
| 3365 | ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev, |
| 3366 | scsi_cmd->request_buffer, length, |
| 3367 | scsi_cmd->sc_data_direction); |
| 3368 | |
| 3369 | if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) { |
| 3370 | ipr_cmd->dma_use_sg = 1; |
| 3371 | ioadl[0].flags_and_data_len = |
| 3372 | cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST); |
| 3373 | ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle); |
| 3374 | return 0; |
| 3375 | } else |
| 3376 | dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n"); |
| 3377 | } |
| 3378 | |
| 3379 | return -1; |
| 3380 | } |
| 3381 | |
| 3382 | /** |
| 3383 | * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes |
| 3384 | * @scsi_cmd: scsi command struct |
| 3385 | * |
| 3386 | * Return value: |
| 3387 | * task attributes |
| 3388 | **/ |
| 3389 | static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) |
| 3390 | { |
| 3391 | u8 tag[2]; |
| 3392 | u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; |
| 3393 | |
| 3394 | if (scsi_populate_tag_msg(scsi_cmd, tag)) { |
| 3395 | switch (tag[0]) { |
| 3396 | case MSG_SIMPLE_TAG: |
| 3397 | rc = IPR_FLAGS_LO_SIMPLE_TASK; |
| 3398 | break; |
| 3399 | case MSG_HEAD_TAG: |
| 3400 | rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; |
| 3401 | break; |
| 3402 | case MSG_ORDERED_TAG: |
| 3403 | rc = IPR_FLAGS_LO_ORDERED_TASK; |
| 3404 | break; |
| 3405 | }; |
| 3406 | } |
| 3407 | |
| 3408 | return rc; |
| 3409 | } |
| 3410 | |
| 3411 | /** |
| 3412 | * ipr_erp_done - Process completion of ERP for a device |
| 3413 | * @ipr_cmd: ipr command struct |
| 3414 | * |
| 3415 | * This function copies the sense buffer into the scsi_cmd |
| 3416 | * struct and pushes the scsi_done function. |
| 3417 | * |
| 3418 | * Return value: |
| 3419 | * nothing |
| 3420 | **/ |
| 3421 | static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) |
| 3422 | { |
| 3423 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; |
| 3424 | struct ipr_resource_entry *res = scsi_cmd->device->hostdata; |
| 3425 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 3426 | u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| 3427 | |
| 3428 | if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { |
| 3429 | scsi_cmd->result |= (DID_ERROR << 16); |
| 3430 | ipr_sdev_err(scsi_cmd->device, |
| 3431 | "Request Sense failed with IOASC: 0x%08X\n", ioasc); |
| 3432 | } else { |
| 3433 | memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, |
| 3434 | SCSI_SENSE_BUFFERSIZE); |
| 3435 | } |
| 3436 | |
| 3437 | if (res) { |
| 3438 | res->needs_sync_complete = 1; |
| 3439 | res->in_erp = 0; |
| 3440 | } |
| 3441 | ipr_unmap_sglist(ioa_cfg, ipr_cmd); |
| 3442 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| 3443 | scsi_cmd->scsi_done(scsi_cmd); |
| 3444 | } |
| 3445 | |
| 3446 | /** |
| 3447 | * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP |
| 3448 | * @ipr_cmd: ipr command struct |
| 3449 | * |
| 3450 | * Return value: |
| 3451 | * none |
| 3452 | **/ |
| 3453 | static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) |
| 3454 | { |
| 3455 | struct ipr_ioarcb *ioarcb; |
| 3456 | struct ipr_ioasa *ioasa; |
| 3457 | |
| 3458 | ioarcb = &ipr_cmd->ioarcb; |
| 3459 | ioasa = &ipr_cmd->ioasa; |
| 3460 | |
| 3461 | memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); |
| 3462 | ioarcb->write_data_transfer_length = 0; |
| 3463 | ioarcb->read_data_transfer_length = 0; |
| 3464 | ioarcb->write_ioadl_len = 0; |
| 3465 | ioarcb->read_ioadl_len = 0; |
| 3466 | ioasa->ioasc = 0; |
| 3467 | ioasa->residual_data_len = 0; |
| 3468 | } |
| 3469 | |
| 3470 | /** |
| 3471 | * ipr_erp_request_sense - Send request sense to a device |
| 3472 | * @ipr_cmd: ipr command struct |
| 3473 | * |
| 3474 | * This function sends a request sense to a device as a result |
| 3475 | * of a check condition. |
| 3476 | * |
| 3477 | * Return value: |
| 3478 | * nothing |
| 3479 | **/ |
| 3480 | static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) |
| 3481 | { |
| 3482 | struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; |
| 3483 | u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| 3484 | |
| 3485 | if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { |
| 3486 | ipr_erp_done(ipr_cmd); |
| 3487 | return; |
| 3488 | } |
| 3489 | |
| 3490 | ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); |
| 3491 | |
| 3492 | cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; |
| 3493 | cmd_pkt->cdb[0] = REQUEST_SENSE; |
| 3494 | cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; |
| 3495 | cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; |
| 3496 | cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; |
| 3497 | cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); |
| 3498 | |
| 3499 | ipr_cmd->ioadl[0].flags_and_data_len = |
| 3500 | cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE); |
| 3501 | ipr_cmd->ioadl[0].address = |
| 3502 | cpu_to_be32(ipr_cmd->sense_buffer_dma); |
| 3503 | |
| 3504 | ipr_cmd->ioarcb.read_ioadl_len = |
| 3505 | cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| 3506 | ipr_cmd->ioarcb.read_data_transfer_length = |
| 3507 | cpu_to_be32(SCSI_SENSE_BUFFERSIZE); |
| 3508 | |
| 3509 | ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, |
| 3510 | IPR_REQUEST_SENSE_TIMEOUT * 2); |
| 3511 | } |
| 3512 | |
| 3513 | /** |
| 3514 | * ipr_erp_cancel_all - Send cancel all to a device |
| 3515 | * @ipr_cmd: ipr command struct |
| 3516 | * |
| 3517 | * This function sends a cancel all to a device to clear the |
| 3518 | * queue. If we are running TCQ on the device, QERR is set to 1, |
| 3519 | * which means all outstanding ops have been dropped on the floor. |
| 3520 | * Cancel all will return them to us. |
| 3521 | * |
| 3522 | * Return value: |
| 3523 | * nothing |
| 3524 | **/ |
| 3525 | static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) |
| 3526 | { |
| 3527 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; |
| 3528 | struct ipr_resource_entry *res = scsi_cmd->device->hostdata; |
| 3529 | struct ipr_cmd_pkt *cmd_pkt; |
| 3530 | |
| 3531 | res->in_erp = 1; |
| 3532 | |
| 3533 | ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); |
| 3534 | |
| 3535 | if (!scsi_get_tag_type(scsi_cmd->device)) { |
| 3536 | ipr_erp_request_sense(ipr_cmd); |
| 3537 | return; |
| 3538 | } |
| 3539 | |
| 3540 | cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; |
| 3541 | cmd_pkt->request_type = IPR_RQTYPE_IOACMD; |
| 3542 | cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; |
| 3543 | |
| 3544 | ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, |
| 3545 | IPR_CANCEL_ALL_TIMEOUT); |
| 3546 | } |
| 3547 | |
| 3548 | /** |
| 3549 | * ipr_dump_ioasa - Dump contents of IOASA |
| 3550 | * @ioa_cfg: ioa config struct |
| 3551 | * @ipr_cmd: ipr command struct |
| 3552 | * |
| 3553 | * This function is invoked by the interrupt handler when ops |
| 3554 | * fail. It will log the IOASA if appropriate. Only called |
| 3555 | * for GPDD ops. |
| 3556 | * |
| 3557 | * Return value: |
| 3558 | * none |
| 3559 | **/ |
| 3560 | static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, |
| 3561 | struct ipr_cmnd *ipr_cmd) |
| 3562 | { |
| 3563 | int i; |
| 3564 | u16 data_len; |
| 3565 | u32 ioasc; |
| 3566 | struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; |
| 3567 | __be32 *ioasa_data = (__be32 *)ioasa; |
| 3568 | int error_index; |
| 3569 | |
| 3570 | ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK; |
| 3571 | |
| 3572 | if (0 == ioasc) |
| 3573 | return; |
| 3574 | |
| 3575 | if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) |
| 3576 | return; |
| 3577 | |
| 3578 | error_index = ipr_get_error(ioasc); |
| 3579 | |
| 3580 | if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { |
| 3581 | /* Don't log an error if the IOA already logged one */ |
| 3582 | if (ioasa->ilid != 0) |
| 3583 | return; |
| 3584 | |
| 3585 | if (ipr_error_table[error_index].log_ioasa == 0) |
| 3586 | return; |
| 3587 | } |
| 3588 | |
| 3589 | ipr_sdev_err(ipr_cmd->scsi_cmd->device, "%s\n", |
| 3590 | ipr_error_table[error_index].error); |
| 3591 | |
| 3592 | if ((ioasa->u.gpdd.end_state <= ARRAY_SIZE(ipr_gpdd_dev_end_states)) && |
| 3593 | (ioasa->u.gpdd.bus_phase <= ARRAY_SIZE(ipr_gpdd_dev_bus_phases))) { |
| 3594 | ipr_sdev_err(ipr_cmd->scsi_cmd->device, |
| 3595 | "Device End state: %s Phase: %s\n", |
| 3596 | ipr_gpdd_dev_end_states[ioasa->u.gpdd.end_state], |
| 3597 | ipr_gpdd_dev_bus_phases[ioasa->u.gpdd.bus_phase]); |
| 3598 | } |
| 3599 | |
| 3600 | if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len)) |
| 3601 | data_len = sizeof(struct ipr_ioasa); |
| 3602 | else |
| 3603 | data_len = be16_to_cpu(ioasa->ret_stat_len); |
| 3604 | |
| 3605 | ipr_err("IOASA Dump:\n"); |
| 3606 | |
| 3607 | for (i = 0; i < data_len / 4; i += 4) { |
| 3608 | ipr_err("%08X: %08X %08X %08X %08X\n", i*4, |
| 3609 | be32_to_cpu(ioasa_data[i]), |
| 3610 | be32_to_cpu(ioasa_data[i+1]), |
| 3611 | be32_to_cpu(ioasa_data[i+2]), |
| 3612 | be32_to_cpu(ioasa_data[i+3])); |
| 3613 | } |
| 3614 | } |
| 3615 | |
| 3616 | /** |
| 3617 | * ipr_gen_sense - Generate SCSI sense data from an IOASA |
| 3618 | * @ioasa: IOASA |
| 3619 | * @sense_buf: sense data buffer |
| 3620 | * |
| 3621 | * Return value: |
| 3622 | * none |
| 3623 | **/ |
| 3624 | static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) |
| 3625 | { |
| 3626 | u32 failing_lba; |
| 3627 | u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; |
| 3628 | struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; |
| 3629 | struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; |
| 3630 | u32 ioasc = be32_to_cpu(ioasa->ioasc); |
| 3631 | |
| 3632 | memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); |
| 3633 | |
| 3634 | if (ioasc >= IPR_FIRST_DRIVER_IOASC) |
| 3635 | return; |
| 3636 | |
| 3637 | ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; |
| 3638 | |
| 3639 | if (ipr_is_vset_device(res) && |
| 3640 | ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && |
| 3641 | ioasa->u.vset.failing_lba_hi != 0) { |
| 3642 | sense_buf[0] = 0x72; |
| 3643 | sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); |
| 3644 | sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); |
| 3645 | sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); |
| 3646 | |
| 3647 | sense_buf[7] = 12; |
| 3648 | sense_buf[8] = 0; |
| 3649 | sense_buf[9] = 0x0A; |
| 3650 | sense_buf[10] = 0x80; |
| 3651 | |
| 3652 | failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); |
| 3653 | |
| 3654 | sense_buf[12] = (failing_lba & 0xff000000) >> 24; |
| 3655 | sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; |
| 3656 | sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; |
| 3657 | sense_buf[15] = failing_lba & 0x000000ff; |
| 3658 | |
| 3659 | failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); |
| 3660 | |
| 3661 | sense_buf[16] = (failing_lba & 0xff000000) >> 24; |
| 3662 | sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; |
| 3663 | sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; |
| 3664 | sense_buf[19] = failing_lba & 0x000000ff; |
| 3665 | } else { |
| 3666 | sense_buf[0] = 0x70; |
| 3667 | sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); |
| 3668 | sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); |
| 3669 | sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); |
| 3670 | |
| 3671 | /* Illegal request */ |
| 3672 | if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && |
| 3673 | (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) { |
| 3674 | sense_buf[7] = 10; /* additional length */ |
| 3675 | |
| 3676 | /* IOARCB was in error */ |
| 3677 | if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) |
| 3678 | sense_buf[15] = 0xC0; |
| 3679 | else /* Parameter data was invalid */ |
| 3680 | sense_buf[15] = 0x80; |
| 3681 | |
| 3682 | sense_buf[16] = |
| 3683 | ((IPR_FIELD_POINTER_MASK & |
| 3684 | be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff; |
| 3685 | sense_buf[17] = |
| 3686 | (IPR_FIELD_POINTER_MASK & |
| 3687 | be32_to_cpu(ioasa->ioasc_specific)) & 0xff; |
| 3688 | } else { |
| 3689 | if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { |
| 3690 | if (ipr_is_vset_device(res)) |
| 3691 | failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); |
| 3692 | else |
| 3693 | failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); |
| 3694 | |
| 3695 | sense_buf[0] |= 0x80; /* Or in the Valid bit */ |
| 3696 | sense_buf[3] = (failing_lba & 0xff000000) >> 24; |
| 3697 | sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; |
| 3698 | sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; |
| 3699 | sense_buf[6] = failing_lba & 0x000000ff; |
| 3700 | } |
| 3701 | |
| 3702 | sense_buf[7] = 6; /* additional length */ |
| 3703 | } |
| 3704 | } |
| 3705 | } |
| 3706 | |
| 3707 | /** |
| 3708 | * ipr_erp_start - Process an error response for a SCSI op |
| 3709 | * @ioa_cfg: ioa config struct |
| 3710 | * @ipr_cmd: ipr command struct |
| 3711 | * |
| 3712 | * This function determines whether or not to initiate ERP |
| 3713 | * on the affected device. |
| 3714 | * |
| 3715 | * Return value: |
| 3716 | * nothing |
| 3717 | **/ |
| 3718 | static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, |
| 3719 | struct ipr_cmnd *ipr_cmd) |
| 3720 | { |
| 3721 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; |
| 3722 | struct ipr_resource_entry *res = scsi_cmd->device->hostdata; |
| 3723 | u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| 3724 | |
| 3725 | if (!res) { |
| 3726 | ipr_scsi_eh_done(ipr_cmd); |
| 3727 | return; |
| 3728 | } |
| 3729 | |
| 3730 | if (ipr_is_gscsi(res)) |
| 3731 | ipr_dump_ioasa(ioa_cfg, ipr_cmd); |
| 3732 | else |
| 3733 | ipr_gen_sense(ipr_cmd); |
| 3734 | |
| 3735 | switch (ioasc & IPR_IOASC_IOASC_MASK) { |
| 3736 | case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: |
| 3737 | scsi_cmd->result |= (DID_IMM_RETRY << 16); |
| 3738 | break; |
| 3739 | case IPR_IOASC_IR_RESOURCE_HANDLE: |
| 3740 | scsi_cmd->result |= (DID_NO_CONNECT << 16); |
| 3741 | break; |
| 3742 | case IPR_IOASC_HW_SEL_TIMEOUT: |
| 3743 | scsi_cmd->result |= (DID_NO_CONNECT << 16); |
| 3744 | res->needs_sync_complete = 1; |
| 3745 | break; |
| 3746 | case IPR_IOASC_SYNC_REQUIRED: |
| 3747 | if (!res->in_erp) |
| 3748 | res->needs_sync_complete = 1; |
| 3749 | scsi_cmd->result |= (DID_IMM_RETRY << 16); |
| 3750 | break; |
| 3751 | case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ |
| 3752 | scsi_cmd->result |= (DID_PASSTHROUGH << 16); |
| 3753 | break; |
| 3754 | case IPR_IOASC_BUS_WAS_RESET: |
| 3755 | case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: |
| 3756 | /* |
| 3757 | * Report the bus reset and ask for a retry. The device |
| 3758 | * will give CC/UA the next command. |
| 3759 | */ |
| 3760 | if (!res->resetting_device) |
| 3761 | scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); |
| 3762 | scsi_cmd->result |= (DID_ERROR << 16); |
| 3763 | res->needs_sync_complete = 1; |
| 3764 | break; |
| 3765 | case IPR_IOASC_HW_DEV_BUS_STATUS: |
| 3766 | scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); |
| 3767 | if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { |
| 3768 | ipr_erp_cancel_all(ipr_cmd); |
| 3769 | return; |
| 3770 | } |
| 3771 | res->needs_sync_complete = 1; |
| 3772 | break; |
| 3773 | case IPR_IOASC_NR_INIT_CMD_REQUIRED: |
| 3774 | break; |
| 3775 | default: |
| 3776 | scsi_cmd->result |= (DID_ERROR << 16); |
| 3777 | if (!ipr_is_vset_device(res)) |
| 3778 | res->needs_sync_complete = 1; |
| 3779 | break; |
| 3780 | } |
| 3781 | |
| 3782 | ipr_unmap_sglist(ioa_cfg, ipr_cmd); |
| 3783 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| 3784 | scsi_cmd->scsi_done(scsi_cmd); |
| 3785 | } |
| 3786 | |
| 3787 | /** |
| 3788 | * ipr_scsi_done - mid-layer done function |
| 3789 | * @ipr_cmd: ipr command struct |
| 3790 | * |
| 3791 | * This function is invoked by the interrupt handler for |
| 3792 | * ops generated by the SCSI mid-layer |
| 3793 | * |
| 3794 | * Return value: |
| 3795 | * none |
| 3796 | **/ |
| 3797 | static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) |
| 3798 | { |
| 3799 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 3800 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; |
| 3801 | u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| 3802 | |
| 3803 | scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len); |
| 3804 | |
| 3805 | if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { |
| 3806 | ipr_unmap_sglist(ioa_cfg, ipr_cmd); |
| 3807 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| 3808 | scsi_cmd->scsi_done(scsi_cmd); |
| 3809 | } else |
| 3810 | ipr_erp_start(ioa_cfg, ipr_cmd); |
| 3811 | } |
| 3812 | |
| 3813 | /** |
| 3814 | * ipr_save_ioafp_mode_select - Save adapters mode select data |
| 3815 | * @ioa_cfg: ioa config struct |
| 3816 | * @scsi_cmd: scsi command struct |
| 3817 | * |
| 3818 | * This function saves mode select data for the adapter to |
| 3819 | * use following an adapter reset. |
| 3820 | * |
| 3821 | * Return value: |
| 3822 | * 0 on success / SCSI_MLQUEUE_HOST_BUSY on failure |
| 3823 | **/ |
| 3824 | static int ipr_save_ioafp_mode_select(struct ipr_ioa_cfg *ioa_cfg, |
| 3825 | struct scsi_cmnd *scsi_cmd) |
| 3826 | { |
| 3827 | if (!ioa_cfg->saved_mode_pages) { |
| 3828 | ioa_cfg->saved_mode_pages = kmalloc(sizeof(struct ipr_mode_pages), |
| 3829 | GFP_ATOMIC); |
| 3830 | if (!ioa_cfg->saved_mode_pages) { |
| 3831 | dev_err(&ioa_cfg->pdev->dev, |
| 3832 | "IOA mode select buffer allocation failed\n"); |
| 3833 | return SCSI_MLQUEUE_HOST_BUSY; |
| 3834 | } |
| 3835 | } |
| 3836 | |
| 3837 | memcpy(ioa_cfg->saved_mode_pages, scsi_cmd->buffer, scsi_cmd->cmnd[4]); |
| 3838 | ioa_cfg->saved_mode_page_len = scsi_cmd->cmnd[4]; |
| 3839 | return 0; |
| 3840 | } |
| 3841 | |
| 3842 | /** |
| 3843 | * ipr_queuecommand - Queue a mid-layer request |
| 3844 | * @scsi_cmd: scsi command struct |
| 3845 | * @done: done function |
| 3846 | * |
| 3847 | * This function queues a request generated by the mid-layer. |
| 3848 | * |
| 3849 | * Return value: |
| 3850 | * 0 on success |
| 3851 | * SCSI_MLQUEUE_DEVICE_BUSY if device is busy |
| 3852 | * SCSI_MLQUEUE_HOST_BUSY if host is busy |
| 3853 | **/ |
| 3854 | static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, |
| 3855 | void (*done) (struct scsi_cmnd *)) |
| 3856 | { |
| 3857 | struct ipr_ioa_cfg *ioa_cfg; |
| 3858 | struct ipr_resource_entry *res; |
| 3859 | struct ipr_ioarcb *ioarcb; |
| 3860 | struct ipr_cmnd *ipr_cmd; |
| 3861 | int rc = 0; |
| 3862 | |
| 3863 | scsi_cmd->scsi_done = done; |
| 3864 | ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; |
| 3865 | res = scsi_cmd->device->hostdata; |
| 3866 | scsi_cmd->result = (DID_OK << 16); |
| 3867 | |
| 3868 | /* |
| 3869 | * We are currently blocking all devices due to a host reset |
| 3870 | * We have told the host to stop giving us new requests, but |
| 3871 | * ERP ops don't count. FIXME |
| 3872 | */ |
| 3873 | if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) |
| 3874 | return SCSI_MLQUEUE_HOST_BUSY; |
| 3875 | |
| 3876 | /* |
| 3877 | * FIXME - Create scsi_set_host_offline interface |
| 3878 | * and the ioa_is_dead check can be removed |
| 3879 | */ |
| 3880 | if (unlikely(ioa_cfg->ioa_is_dead || !res)) { |
| 3881 | memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); |
| 3882 | scsi_cmd->result = (DID_NO_CONNECT << 16); |
| 3883 | scsi_cmd->scsi_done(scsi_cmd); |
| 3884 | return 0; |
| 3885 | } |
| 3886 | |
| 3887 | ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); |
| 3888 | ioarcb = &ipr_cmd->ioarcb; |
| 3889 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); |
| 3890 | |
| 3891 | memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); |
| 3892 | ipr_cmd->scsi_cmd = scsi_cmd; |
| 3893 | ioarcb->res_handle = res->cfgte.res_handle; |
| 3894 | ipr_cmd->done = ipr_scsi_done; |
| 3895 | ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); |
| 3896 | |
| 3897 | if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { |
| 3898 | if (scsi_cmd->underflow == 0) |
| 3899 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; |
| 3900 | |
| 3901 | if (res->needs_sync_complete) { |
| 3902 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; |
| 3903 | res->needs_sync_complete = 0; |
| 3904 | } |
| 3905 | |
| 3906 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; |
| 3907 | ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; |
| 3908 | ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; |
| 3909 | ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); |
| 3910 | } |
| 3911 | |
| 3912 | if (scsi_cmd->cmnd[0] >= 0xC0 && |
| 3913 | (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) |
| 3914 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; |
| 3915 | |
| 3916 | if (ipr_is_ioa_resource(res) && scsi_cmd->cmnd[0] == MODE_SELECT) |
| 3917 | rc = ipr_save_ioafp_mode_select(ioa_cfg, scsi_cmd); |
| 3918 | |
| 3919 | if (likely(rc == 0)) |
| 3920 | rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); |
| 3921 | |
| 3922 | if (likely(rc == 0)) { |
| 3923 | mb(); |
| 3924 | writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), |
| 3925 | ioa_cfg->regs.ioarrin_reg); |
| 3926 | } else { |
| 3927 | list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| 3928 | return SCSI_MLQUEUE_HOST_BUSY; |
| 3929 | } |
| 3930 | |
| 3931 | return 0; |
| 3932 | } |
| 3933 | |
| 3934 | /** |
| 3935 | * ipr_info - Get information about the card/driver |
| 3936 | * @scsi_host: scsi host struct |
| 3937 | * |
| 3938 | * Return value: |
| 3939 | * pointer to buffer with description string |
| 3940 | **/ |
| 3941 | static const char * ipr_ioa_info(struct Scsi_Host *host) |
| 3942 | { |
| 3943 | static char buffer[512]; |
| 3944 | struct ipr_ioa_cfg *ioa_cfg; |
| 3945 | unsigned long lock_flags = 0; |
| 3946 | |
| 3947 | ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; |
| 3948 | |
| 3949 | spin_lock_irqsave(host->host_lock, lock_flags); |
| 3950 | sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); |
| 3951 | spin_unlock_irqrestore(host->host_lock, lock_flags); |
| 3952 | |
| 3953 | return buffer; |
| 3954 | } |
| 3955 | |
| 3956 | static struct scsi_host_template driver_template = { |
| 3957 | .module = THIS_MODULE, |
| 3958 | .name = "IPR", |
| 3959 | .info = ipr_ioa_info, |
| 3960 | .queuecommand = ipr_queuecommand, |
| 3961 | .eh_abort_handler = ipr_eh_abort, |
| 3962 | .eh_device_reset_handler = ipr_eh_dev_reset, |
| 3963 | .eh_host_reset_handler = ipr_eh_host_reset, |
| 3964 | .slave_alloc = ipr_slave_alloc, |
| 3965 | .slave_configure = ipr_slave_configure, |
| 3966 | .slave_destroy = ipr_slave_destroy, |
| 3967 | .change_queue_depth = ipr_change_queue_depth, |
| 3968 | .change_queue_type = ipr_change_queue_type, |
| 3969 | .bios_param = ipr_biosparam, |
| 3970 | .can_queue = IPR_MAX_COMMANDS, |
| 3971 | .this_id = -1, |
| 3972 | .sg_tablesize = IPR_MAX_SGLIST, |
| 3973 | .max_sectors = IPR_IOA_MAX_SECTORS, |
| 3974 | .cmd_per_lun = IPR_MAX_CMD_PER_LUN, |
| 3975 | .use_clustering = ENABLE_CLUSTERING, |
| 3976 | .shost_attrs = ipr_ioa_attrs, |
| 3977 | .sdev_attrs = ipr_dev_attrs, |
| 3978 | .proc_name = IPR_NAME |
| 3979 | }; |
| 3980 | |
| 3981 | #ifdef CONFIG_PPC_PSERIES |
| 3982 | static const u16 ipr_blocked_processors[] = { |
| 3983 | PV_NORTHSTAR, |
| 3984 | PV_PULSAR, |
| 3985 | PV_POWER4, |
| 3986 | PV_ICESTAR, |
| 3987 | PV_SSTAR, |
| 3988 | PV_POWER4p, |
| 3989 | PV_630, |
| 3990 | PV_630p |
| 3991 | }; |
| 3992 | |
| 3993 | /** |
| 3994 | * ipr_invalid_adapter - Determine if this adapter is supported on this hardware |
| 3995 | * @ioa_cfg: ioa cfg struct |
| 3996 | * |
| 3997 | * Adapters that use Gemstone revision < 3.1 do not work reliably on |
| 3998 | * certain pSeries hardware. This function determines if the given |
| 3999 | * adapter is in one of these confgurations or not. |
| 4000 | * |
| 4001 | * Return value: |
| 4002 | * 1 if adapter is not supported / 0 if adapter is supported |
| 4003 | **/ |
| 4004 | static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) |
| 4005 | { |
| 4006 | u8 rev_id; |
| 4007 | int i; |
| 4008 | |
| 4009 | if (ioa_cfg->type == 0x5702) { |
| 4010 | if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID, |
| 4011 | &rev_id) == PCIBIOS_SUCCESSFUL) { |
| 4012 | if (rev_id < 4) { |
| 4013 | for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ |
| 4014 | if (__is_processor(ipr_blocked_processors[i])) |
| 4015 | return 1; |
| 4016 | } |
| 4017 | } |
| 4018 | } |
| 4019 | } |
| 4020 | return 0; |
| 4021 | } |
| 4022 | #else |
| 4023 | #define ipr_invalid_adapter(ioa_cfg) 0 |
| 4024 | #endif |
| 4025 | |
| 4026 | /** |
| 4027 | * ipr_ioa_bringdown_done - IOA bring down completion. |
| 4028 | * @ipr_cmd: ipr command struct |
| 4029 | * |
| 4030 | * This function processes the completion of an adapter bring down. |
| 4031 | * It wakes any reset sleepers. |
| 4032 | * |
| 4033 | * Return value: |
| 4034 | * IPR_RC_JOB_RETURN |
| 4035 | **/ |
| 4036 | static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) |
| 4037 | { |
| 4038 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 4039 | |
| 4040 | ENTER; |
| 4041 | ioa_cfg->in_reset_reload = 0; |
| 4042 | ioa_cfg->reset_retries = 0; |
| 4043 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| 4044 | wake_up_all(&ioa_cfg->reset_wait_q); |
| 4045 | |
| 4046 | spin_unlock_irq(ioa_cfg->host->host_lock); |
| 4047 | scsi_unblock_requests(ioa_cfg->host); |
| 4048 | spin_lock_irq(ioa_cfg->host->host_lock); |
| 4049 | LEAVE; |
| 4050 | |
| 4051 | return IPR_RC_JOB_RETURN; |
| 4052 | } |
| 4053 | |
| 4054 | /** |
| 4055 | * ipr_ioa_reset_done - IOA reset completion. |
| 4056 | * @ipr_cmd: ipr command struct |
| 4057 | * |
| 4058 | * This function processes the completion of an adapter reset. |
| 4059 | * It schedules any necessary mid-layer add/removes and |
| 4060 | * wakes any reset sleepers. |
| 4061 | * |
| 4062 | * Return value: |
| 4063 | * IPR_RC_JOB_RETURN |
| 4064 | **/ |
| 4065 | static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) |
| 4066 | { |
| 4067 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 4068 | struct ipr_resource_entry *res; |
| 4069 | struct ipr_hostrcb *hostrcb, *temp; |
| 4070 | int i = 0; |
| 4071 | |
| 4072 | ENTER; |
| 4073 | ioa_cfg->in_reset_reload = 0; |
| 4074 | ioa_cfg->allow_cmds = 1; |
| 4075 | ioa_cfg->reset_cmd = NULL; |
| 4076 | |
| 4077 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { |
| 4078 | if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { |
| 4079 | ipr_trace; |
| 4080 | break; |
| 4081 | } |
| 4082 | } |
| 4083 | schedule_work(&ioa_cfg->work_q); |
| 4084 | |
| 4085 | list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { |
| 4086 | list_del(&hostrcb->queue); |
| 4087 | if (i++ < IPR_NUM_LOG_HCAMS) |
| 4088 | ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); |
| 4089 | else |
| 4090 | ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); |
| 4091 | } |
| 4092 | |
| 4093 | dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); |
| 4094 | |
| 4095 | ioa_cfg->reset_retries = 0; |
| 4096 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| 4097 | wake_up_all(&ioa_cfg->reset_wait_q); |
| 4098 | |
| 4099 | spin_unlock_irq(ioa_cfg->host->host_lock); |
| 4100 | scsi_unblock_requests(ioa_cfg->host); |
| 4101 | spin_lock_irq(ioa_cfg->host->host_lock); |
| 4102 | |
| 4103 | if (!ioa_cfg->allow_cmds) |
| 4104 | scsi_block_requests(ioa_cfg->host); |
| 4105 | |
| 4106 | LEAVE; |
| 4107 | return IPR_RC_JOB_RETURN; |
| 4108 | } |
| 4109 | |
| 4110 | /** |
| 4111 | * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer |
| 4112 | * @supported_dev: supported device struct |
| 4113 | * @vpids: vendor product id struct |
| 4114 | * |
| 4115 | * Return value: |
| 4116 | * none |
| 4117 | **/ |
| 4118 | static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, |
| 4119 | struct ipr_std_inq_vpids *vpids) |
| 4120 | { |
| 4121 | memset(supported_dev, 0, sizeof(struct ipr_supported_device)); |
| 4122 | memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); |
| 4123 | supported_dev->num_records = 1; |
| 4124 | supported_dev->data_length = |
| 4125 | cpu_to_be16(sizeof(struct ipr_supported_device)); |
| 4126 | supported_dev->reserved = 0; |
| 4127 | } |
| 4128 | |
| 4129 | /** |
| 4130 | * ipr_set_supported_devs - Send Set Supported Devices for a device |
| 4131 | * @ipr_cmd: ipr command struct |
| 4132 | * |
| 4133 | * This function send a Set Supported Devices to the adapter |
| 4134 | * |
| 4135 | * Return value: |
| 4136 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN |
| 4137 | **/ |
| 4138 | static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) |
| 4139 | { |
| 4140 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 4141 | struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; |
| 4142 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; |
| 4143 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| 4144 | struct ipr_resource_entry *res = ipr_cmd->u.res; |
| 4145 | |
| 4146 | ipr_cmd->job_step = ipr_ioa_reset_done; |
| 4147 | |
| 4148 | list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { |
| 4149 | if (!ipr_is_af_dasd_device(res)) |
| 4150 | continue; |
| 4151 | |
| 4152 | ipr_cmd->u.res = res; |
| 4153 | ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids); |
| 4154 | |
| 4155 | ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); |
| 4156 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; |
| 4157 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; |
| 4158 | |
| 4159 | ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; |
| 4160 | ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; |
| 4161 | ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; |
| 4162 | |
| 4163 | ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | |
| 4164 | sizeof(struct ipr_supported_device)); |
| 4165 | ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma + |
| 4166 | offsetof(struct ipr_misc_cbs, supp_dev)); |
| 4167 | ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| 4168 | ioarcb->write_data_transfer_length = |
| 4169 | cpu_to_be32(sizeof(struct ipr_supported_device)); |
| 4170 | |
| 4171 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, |
| 4172 | IPR_SET_SUP_DEVICE_TIMEOUT); |
| 4173 | |
| 4174 | ipr_cmd->job_step = ipr_set_supported_devs; |
| 4175 | return IPR_RC_JOB_RETURN; |
| 4176 | } |
| 4177 | |
| 4178 | return IPR_RC_JOB_CONTINUE; |
| 4179 | } |
| 4180 | |
| 4181 | /** |
| 4182 | * ipr_get_mode_page - Locate specified mode page |
| 4183 | * @mode_pages: mode page buffer |
| 4184 | * @page_code: page code to find |
| 4185 | * @len: minimum required length for mode page |
| 4186 | * |
| 4187 | * Return value: |
| 4188 | * pointer to mode page / NULL on failure |
| 4189 | **/ |
| 4190 | static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, |
| 4191 | u32 page_code, u32 len) |
| 4192 | { |
| 4193 | struct ipr_mode_page_hdr *mode_hdr; |
| 4194 | u32 page_length; |
| 4195 | u32 length; |
| 4196 | |
| 4197 | if (!mode_pages || (mode_pages->hdr.length == 0)) |
| 4198 | return NULL; |
| 4199 | |
| 4200 | length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; |
| 4201 | mode_hdr = (struct ipr_mode_page_hdr *) |
| 4202 | (mode_pages->data + mode_pages->hdr.block_desc_len); |
| 4203 | |
| 4204 | while (length) { |
| 4205 | if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { |
| 4206 | if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) |
| 4207 | return mode_hdr; |
| 4208 | break; |
| 4209 | } else { |
| 4210 | page_length = (sizeof(struct ipr_mode_page_hdr) + |
| 4211 | mode_hdr->page_length); |
| 4212 | length -= page_length; |
| 4213 | mode_hdr = (struct ipr_mode_page_hdr *) |
| 4214 | ((unsigned long)mode_hdr + page_length); |
| 4215 | } |
| 4216 | } |
| 4217 | return NULL; |
| 4218 | } |
| 4219 | |
| 4220 | /** |
| 4221 | * ipr_check_term_power - Check for term power errors |
| 4222 | * @ioa_cfg: ioa config struct |
| 4223 | * @mode_pages: IOAFP mode pages buffer |
| 4224 | * |
| 4225 | * Check the IOAFP's mode page 28 for term power errors |
| 4226 | * |
| 4227 | * Return value: |
| 4228 | * nothing |
| 4229 | **/ |
| 4230 | static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, |
| 4231 | struct ipr_mode_pages *mode_pages) |
| 4232 | { |
| 4233 | int i; |
| 4234 | int entry_length; |
| 4235 | struct ipr_dev_bus_entry *bus; |
| 4236 | struct ipr_mode_page28 *mode_page; |
| 4237 | |
| 4238 | mode_page = ipr_get_mode_page(mode_pages, 0x28, |
| 4239 | sizeof(struct ipr_mode_page28)); |
| 4240 | |
| 4241 | entry_length = mode_page->entry_length; |
| 4242 | |
| 4243 | bus = mode_page->bus; |
| 4244 | |
| 4245 | for (i = 0; i < mode_page->num_entries; i++) { |
| 4246 | if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { |
| 4247 | dev_err(&ioa_cfg->pdev->dev, |
| 4248 | "Term power is absent on scsi bus %d\n", |
| 4249 | bus->res_addr.bus); |
| 4250 | } |
| 4251 | |
| 4252 | bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); |
| 4253 | } |
| 4254 | } |
| 4255 | |
| 4256 | /** |
| 4257 | * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table |
| 4258 | * @ioa_cfg: ioa config struct |
| 4259 | * |
| 4260 | * Looks through the config table checking for SES devices. If |
| 4261 | * the SES device is in the SES table indicating a maximum SCSI |
| 4262 | * bus speed, the speed is limited for the bus. |
| 4263 | * |
| 4264 | * Return value: |
| 4265 | * none |
| 4266 | **/ |
| 4267 | static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) |
| 4268 | { |
| 4269 | u32 max_xfer_rate; |
| 4270 | int i; |
| 4271 | |
| 4272 | for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { |
| 4273 | max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, |
| 4274 | ioa_cfg->bus_attr[i].bus_width); |
| 4275 | |
| 4276 | if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) |
| 4277 | ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; |
| 4278 | } |
| 4279 | } |
| 4280 | |
| 4281 | /** |
| 4282 | * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 |
| 4283 | * @ioa_cfg: ioa config struct |
| 4284 | * @mode_pages: mode page 28 buffer |
| 4285 | * |
| 4286 | * Updates mode page 28 based on driver configuration |
| 4287 | * |
| 4288 | * Return value: |
| 4289 | * none |
| 4290 | **/ |
| 4291 | static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, |
| 4292 | struct ipr_mode_pages *mode_pages) |
| 4293 | { |
| 4294 | int i, entry_length; |
| 4295 | struct ipr_dev_bus_entry *bus; |
| 4296 | struct ipr_bus_attributes *bus_attr; |
| 4297 | struct ipr_mode_page28 *mode_page; |
| 4298 | |
| 4299 | mode_page = ipr_get_mode_page(mode_pages, 0x28, |
| 4300 | sizeof(struct ipr_mode_page28)); |
| 4301 | |
| 4302 | entry_length = mode_page->entry_length; |
| 4303 | |
| 4304 | /* Loop for each device bus entry */ |
| 4305 | for (i = 0, bus = mode_page->bus; |
| 4306 | i < mode_page->num_entries; |
| 4307 | i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { |
| 4308 | if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { |
| 4309 | dev_err(&ioa_cfg->pdev->dev, |
| 4310 | "Invalid resource address reported: 0x%08X\n", |
| 4311 | IPR_GET_PHYS_LOC(bus->res_addr)); |
| 4312 | continue; |
| 4313 | } |
| 4314 | |
| 4315 | bus_attr = &ioa_cfg->bus_attr[i]; |
| 4316 | bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; |
| 4317 | bus->bus_width = bus_attr->bus_width; |
| 4318 | bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); |
| 4319 | bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; |
| 4320 | if (bus_attr->qas_enabled) |
| 4321 | bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; |
| 4322 | else |
| 4323 | bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; |
| 4324 | } |
| 4325 | } |
| 4326 | |
| 4327 | /** |
| 4328 | * ipr_build_mode_select - Build a mode select command |
| 4329 | * @ipr_cmd: ipr command struct |
| 4330 | * @res_handle: resource handle to send command to |
| 4331 | * @parm: Byte 2 of Mode Sense command |
| 4332 | * @dma_addr: DMA buffer address |
| 4333 | * @xfer_len: data transfer length |
| 4334 | * |
| 4335 | * Return value: |
| 4336 | * none |
| 4337 | **/ |
| 4338 | static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, |
| 4339 | __be32 res_handle, u8 parm, u32 dma_addr, |
| 4340 | u8 xfer_len) |
| 4341 | { |
| 4342 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; |
| 4343 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| 4344 | |
| 4345 | ioarcb->res_handle = res_handle; |
| 4346 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; |
| 4347 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; |
| 4348 | ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; |
| 4349 | ioarcb->cmd_pkt.cdb[1] = parm; |
| 4350 | ioarcb->cmd_pkt.cdb[4] = xfer_len; |
| 4351 | |
| 4352 | ioadl->flags_and_data_len = |
| 4353 | cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len); |
| 4354 | ioadl->address = cpu_to_be32(dma_addr); |
| 4355 | ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| 4356 | ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len); |
| 4357 | } |
| 4358 | |
| 4359 | /** |
| 4360 | * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA |
| 4361 | * @ipr_cmd: ipr command struct |
| 4362 | * |
| 4363 | * This function sets up the SCSI bus attributes and sends |
| 4364 | * a Mode Select for Page 28 to activate them. |
| 4365 | * |
| 4366 | * Return value: |
| 4367 | * IPR_RC_JOB_RETURN |
| 4368 | **/ |
| 4369 | static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) |
| 4370 | { |
| 4371 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 4372 | struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; |
| 4373 | int length; |
| 4374 | |
| 4375 | ENTER; |
| 4376 | if (ioa_cfg->saved_mode_pages) { |
| 4377 | memcpy(mode_pages, ioa_cfg->saved_mode_pages, |
| 4378 | ioa_cfg->saved_mode_page_len); |
| 4379 | length = ioa_cfg->saved_mode_page_len; |
| 4380 | } else { |
| 4381 | ipr_scsi_bus_speed_limit(ioa_cfg); |
| 4382 | ipr_check_term_power(ioa_cfg, mode_pages); |
| 4383 | ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); |
| 4384 | length = mode_pages->hdr.length + 1; |
| 4385 | mode_pages->hdr.length = 0; |
| 4386 | } |
| 4387 | |
| 4388 | ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, |
| 4389 | ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), |
| 4390 | length); |
| 4391 | |
| 4392 | ipr_cmd->job_step = ipr_set_supported_devs; |
| 4393 | ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, |
| 4394 | struct ipr_resource_entry, queue); |
| 4395 | |
| 4396 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); |
| 4397 | |
| 4398 | LEAVE; |
| 4399 | return IPR_RC_JOB_RETURN; |
| 4400 | } |
| 4401 | |
| 4402 | /** |
| 4403 | * ipr_build_mode_sense - Builds a mode sense command |
| 4404 | * @ipr_cmd: ipr command struct |
| 4405 | * @res: resource entry struct |
| 4406 | * @parm: Byte 2 of mode sense command |
| 4407 | * @dma_addr: DMA address of mode sense buffer |
| 4408 | * @xfer_len: Size of DMA buffer |
| 4409 | * |
| 4410 | * Return value: |
| 4411 | * none |
| 4412 | **/ |
| 4413 | static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, |
| 4414 | __be32 res_handle, |
| 4415 | u8 parm, u32 dma_addr, u8 xfer_len) |
| 4416 | { |
| 4417 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; |
| 4418 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| 4419 | |
| 4420 | ioarcb->res_handle = res_handle; |
| 4421 | ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; |
| 4422 | ioarcb->cmd_pkt.cdb[2] = parm; |
| 4423 | ioarcb->cmd_pkt.cdb[4] = xfer_len; |
| 4424 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; |
| 4425 | |
| 4426 | ioadl->flags_and_data_len = |
| 4427 | cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); |
| 4428 | ioadl->address = cpu_to_be32(dma_addr); |
| 4429 | ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| 4430 | ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); |
| 4431 | } |
| 4432 | |
| 4433 | /** |
| 4434 | * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA |
| 4435 | * @ipr_cmd: ipr command struct |
| 4436 | * |
| 4437 | * This function send a Page 28 mode sense to the IOA to |
| 4438 | * retrieve SCSI bus attributes. |
| 4439 | * |
| 4440 | * Return value: |
| 4441 | * IPR_RC_JOB_RETURN |
| 4442 | **/ |
| 4443 | static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) |
| 4444 | { |
| 4445 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 4446 | |
| 4447 | ENTER; |
| 4448 | ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), |
| 4449 | 0x28, ioa_cfg->vpd_cbs_dma + |
| 4450 | offsetof(struct ipr_misc_cbs, mode_pages), |
| 4451 | sizeof(struct ipr_mode_pages)); |
| 4452 | |
| 4453 | ipr_cmd->job_step = ipr_ioafp_mode_select_page28; |
| 4454 | |
| 4455 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); |
| 4456 | |
| 4457 | LEAVE; |
| 4458 | return IPR_RC_JOB_RETURN; |
| 4459 | } |
| 4460 | |
| 4461 | /** |
| 4462 | * ipr_init_res_table - Initialize the resource table |
| 4463 | * @ipr_cmd: ipr command struct |
| 4464 | * |
| 4465 | * This function looks through the existing resource table, comparing |
| 4466 | * it with the config table. This function will take care of old/new |
| 4467 | * devices and schedule adding/removing them from the mid-layer |
| 4468 | * as appropriate. |
| 4469 | * |
| 4470 | * Return value: |
| 4471 | * IPR_RC_JOB_CONTINUE |
| 4472 | **/ |
| 4473 | static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) |
| 4474 | { |
| 4475 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 4476 | struct ipr_resource_entry *res, *temp; |
| 4477 | struct ipr_config_table_entry *cfgte; |
| 4478 | int found, i; |
| 4479 | LIST_HEAD(old_res); |
| 4480 | |
| 4481 | ENTER; |
| 4482 | if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ) |
| 4483 | dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); |
| 4484 | |
| 4485 | list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) |
| 4486 | list_move_tail(&res->queue, &old_res); |
| 4487 | |
| 4488 | for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) { |
| 4489 | cfgte = &ioa_cfg->cfg_table->dev[i]; |
| 4490 | found = 0; |
| 4491 | |
| 4492 | list_for_each_entry_safe(res, temp, &old_res, queue) { |
| 4493 | if (!memcmp(&res->cfgte.res_addr, |
| 4494 | &cfgte->res_addr, sizeof(cfgte->res_addr))) { |
| 4495 | list_move_tail(&res->queue, &ioa_cfg->used_res_q); |
| 4496 | found = 1; |
| 4497 | break; |
| 4498 | } |
| 4499 | } |
| 4500 | |
| 4501 | if (!found) { |
| 4502 | if (list_empty(&ioa_cfg->free_res_q)) { |
| 4503 | dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); |
| 4504 | break; |
| 4505 | } |
| 4506 | |
| 4507 | found = 1; |
| 4508 | res = list_entry(ioa_cfg->free_res_q.next, |
| 4509 | struct ipr_resource_entry, queue); |
| 4510 | list_move_tail(&res->queue, &ioa_cfg->used_res_q); |
| 4511 | ipr_init_res_entry(res); |
| 4512 | res->add_to_ml = 1; |
| 4513 | } |
| 4514 | |
| 4515 | if (found) |
| 4516 | memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); |
| 4517 | } |
| 4518 | |
| 4519 | list_for_each_entry_safe(res, temp, &old_res, queue) { |
| 4520 | if (res->sdev) { |
| 4521 | res->del_from_ml = 1; |
| 4522 | res->sdev->hostdata = NULL; |
| 4523 | list_move_tail(&res->queue, &ioa_cfg->used_res_q); |
| 4524 | } else { |
| 4525 | list_move_tail(&res->queue, &ioa_cfg->free_res_q); |
| 4526 | } |
| 4527 | } |
| 4528 | |
| 4529 | ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; |
| 4530 | |
| 4531 | LEAVE; |
| 4532 | return IPR_RC_JOB_CONTINUE; |
| 4533 | } |
| 4534 | |
| 4535 | /** |
| 4536 | * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. |
| 4537 | * @ipr_cmd: ipr command struct |
| 4538 | * |
| 4539 | * This function sends a Query IOA Configuration command |
| 4540 | * to the adapter to retrieve the IOA configuration table. |
| 4541 | * |
| 4542 | * Return value: |
| 4543 | * IPR_RC_JOB_RETURN |
| 4544 | **/ |
| 4545 | static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) |
| 4546 | { |
| 4547 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 4548 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| 4549 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; |
| 4550 | struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; |
| 4551 | |
| 4552 | ENTER; |
| 4553 | dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", |
| 4554 | ucode_vpd->major_release, ucode_vpd->card_type, |
| 4555 | ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); |
| 4556 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; |
| 4557 | ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); |
| 4558 | |
| 4559 | ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; |
| 4560 | ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff; |
| 4561 | ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff; |
| 4562 | |
| 4563 | ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| 4564 | ioarcb->read_data_transfer_length = |
| 4565 | cpu_to_be32(sizeof(struct ipr_config_table)); |
| 4566 | |
| 4567 | ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma); |
| 4568 | ioadl->flags_and_data_len = |
| 4569 | cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table)); |
| 4570 | |
| 4571 | ipr_cmd->job_step = ipr_init_res_table; |
| 4572 | |
| 4573 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); |
| 4574 | |
| 4575 | LEAVE; |
| 4576 | return IPR_RC_JOB_RETURN; |
| 4577 | } |
| 4578 | |
| 4579 | /** |
| 4580 | * ipr_ioafp_inquiry - Send an Inquiry to the adapter. |
| 4581 | * @ipr_cmd: ipr command struct |
| 4582 | * |
| 4583 | * This utility function sends an inquiry to the adapter. |
| 4584 | * |
| 4585 | * Return value: |
| 4586 | * none |
| 4587 | **/ |
| 4588 | static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, |
| 4589 | u32 dma_addr, u8 xfer_len) |
| 4590 | { |
| 4591 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| 4592 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; |
| 4593 | |
| 4594 | ENTER; |
| 4595 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; |
| 4596 | ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); |
| 4597 | |
| 4598 | ioarcb->cmd_pkt.cdb[0] = INQUIRY; |
| 4599 | ioarcb->cmd_pkt.cdb[1] = flags; |
| 4600 | ioarcb->cmd_pkt.cdb[2] = page; |
| 4601 | ioarcb->cmd_pkt.cdb[4] = xfer_len; |
| 4602 | |
| 4603 | ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| 4604 | ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); |
| 4605 | |
| 4606 | ioadl->address = cpu_to_be32(dma_addr); |
| 4607 | ioadl->flags_and_data_len = |
| 4608 | cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); |
| 4609 | |
| 4610 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); |
| 4611 | LEAVE; |
| 4612 | } |
| 4613 | |
| 4614 | /** |
| 4615 | * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. |
| 4616 | * @ipr_cmd: ipr command struct |
| 4617 | * |
| 4618 | * This function sends a Page 3 inquiry to the adapter |
| 4619 | * to retrieve software VPD information. |
| 4620 | * |
| 4621 | * Return value: |
| 4622 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN |
| 4623 | **/ |
| 4624 | static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) |
| 4625 | { |
| 4626 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 4627 | char type[5]; |
| 4628 | |
| 4629 | ENTER; |
| 4630 | |
| 4631 | /* Grab the type out of the VPD and store it away */ |
| 4632 | memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); |
| 4633 | type[4] = '\0'; |
| 4634 | ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); |
| 4635 | |
| 4636 | ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; |
| 4637 | |
| 4638 | ipr_ioafp_inquiry(ipr_cmd, 1, 3, |
| 4639 | ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), |
| 4640 | sizeof(struct ipr_inquiry_page3)); |
| 4641 | |
| 4642 | LEAVE; |
| 4643 | return IPR_RC_JOB_RETURN; |
| 4644 | } |
| 4645 | |
| 4646 | /** |
| 4647 | * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. |
| 4648 | * @ipr_cmd: ipr command struct |
| 4649 | * |
| 4650 | * This function sends a standard inquiry to the adapter. |
| 4651 | * |
| 4652 | * Return value: |
| 4653 | * IPR_RC_JOB_RETURN |
| 4654 | **/ |
| 4655 | static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) |
| 4656 | { |
| 4657 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 4658 | |
| 4659 | ENTER; |
| 4660 | ipr_cmd->job_step = ipr_ioafp_page3_inquiry; |
| 4661 | |
| 4662 | ipr_ioafp_inquiry(ipr_cmd, 0, 0, |
| 4663 | ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), |
| 4664 | sizeof(struct ipr_ioa_vpd)); |
| 4665 | |
| 4666 | LEAVE; |
| 4667 | return IPR_RC_JOB_RETURN; |
| 4668 | } |
| 4669 | |
| 4670 | /** |
| 4671 | * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ. |
| 4672 | * @ipr_cmd: ipr command struct |
| 4673 | * |
| 4674 | * This function send an Identify Host Request Response Queue |
| 4675 | * command to establish the HRRQ with the adapter. |
| 4676 | * |
| 4677 | * Return value: |
| 4678 | * IPR_RC_JOB_RETURN |
| 4679 | **/ |
| 4680 | static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd) |
| 4681 | { |
| 4682 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 4683 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| 4684 | |
| 4685 | ENTER; |
| 4686 | dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); |
| 4687 | |
| 4688 | ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; |
| 4689 | ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); |
| 4690 | |
| 4691 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; |
| 4692 | ioarcb->cmd_pkt.cdb[2] = |
| 4693 | ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff; |
| 4694 | ioarcb->cmd_pkt.cdb[3] = |
| 4695 | ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff; |
| 4696 | ioarcb->cmd_pkt.cdb[4] = |
| 4697 | ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff; |
| 4698 | ioarcb->cmd_pkt.cdb[5] = |
| 4699 | ((u32) ioa_cfg->host_rrq_dma) & 0xff; |
| 4700 | ioarcb->cmd_pkt.cdb[7] = |
| 4701 | ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; |
| 4702 | ioarcb->cmd_pkt.cdb[8] = |
| 4703 | (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; |
| 4704 | |
| 4705 | ipr_cmd->job_step = ipr_ioafp_std_inquiry; |
| 4706 | |
| 4707 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); |
| 4708 | |
| 4709 | LEAVE; |
| 4710 | return IPR_RC_JOB_RETURN; |
| 4711 | } |
| 4712 | |
| 4713 | /** |
| 4714 | * ipr_reset_timer_done - Adapter reset timer function |
| 4715 | * @ipr_cmd: ipr command struct |
| 4716 | * |
| 4717 | * Description: This function is used in adapter reset processing |
| 4718 | * for timing events. If the reset_cmd pointer in the IOA |
| 4719 | * config struct is not this adapter's we are doing nested |
| 4720 | * resets and fail_all_ops will take care of freeing the |
| 4721 | * command block. |
| 4722 | * |
| 4723 | * Return value: |
| 4724 | * none |
| 4725 | **/ |
| 4726 | static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) |
| 4727 | { |
| 4728 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 4729 | unsigned long lock_flags = 0; |
| 4730 | |
| 4731 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 4732 | |
| 4733 | if (ioa_cfg->reset_cmd == ipr_cmd) { |
| 4734 | list_del(&ipr_cmd->queue); |
| 4735 | ipr_cmd->done(ipr_cmd); |
| 4736 | } |
| 4737 | |
| 4738 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 4739 | } |
| 4740 | |
| 4741 | /** |
| 4742 | * ipr_reset_start_timer - Start a timer for adapter reset job |
| 4743 | * @ipr_cmd: ipr command struct |
| 4744 | * @timeout: timeout value |
| 4745 | * |
| 4746 | * Description: This function is used in adapter reset processing |
| 4747 | * for timing events. If the reset_cmd pointer in the IOA |
| 4748 | * config struct is not this adapter's we are doing nested |
| 4749 | * resets and fail_all_ops will take care of freeing the |
| 4750 | * command block. |
| 4751 | * |
| 4752 | * Return value: |
| 4753 | * none |
| 4754 | **/ |
| 4755 | static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, |
| 4756 | unsigned long timeout) |
| 4757 | { |
| 4758 | list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); |
| 4759 | ipr_cmd->done = ipr_reset_ioa_job; |
| 4760 | |
| 4761 | ipr_cmd->timer.data = (unsigned long) ipr_cmd; |
| 4762 | ipr_cmd->timer.expires = jiffies + timeout; |
| 4763 | ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; |
| 4764 | add_timer(&ipr_cmd->timer); |
| 4765 | } |
| 4766 | |
| 4767 | /** |
| 4768 | * ipr_init_ioa_mem - Initialize ioa_cfg control block |
| 4769 | * @ioa_cfg: ioa cfg struct |
| 4770 | * |
| 4771 | * Return value: |
| 4772 | * nothing |
| 4773 | **/ |
| 4774 | static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) |
| 4775 | { |
| 4776 | memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); |
| 4777 | |
| 4778 | /* Initialize Host RRQ pointers */ |
| 4779 | ioa_cfg->hrrq_start = ioa_cfg->host_rrq; |
| 4780 | ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; |
| 4781 | ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; |
| 4782 | ioa_cfg->toggle_bit = 1; |
| 4783 | |
| 4784 | /* Zero out config table */ |
| 4785 | memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table)); |
| 4786 | } |
| 4787 | |
| 4788 | /** |
| 4789 | * ipr_reset_enable_ioa - Enable the IOA following a reset. |
| 4790 | * @ipr_cmd: ipr command struct |
| 4791 | * |
| 4792 | * This function reinitializes some control blocks and |
| 4793 | * enables destructive diagnostics on the adapter. |
| 4794 | * |
| 4795 | * Return value: |
| 4796 | * IPR_RC_JOB_RETURN |
| 4797 | **/ |
| 4798 | static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) |
| 4799 | { |
| 4800 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 4801 | volatile u32 int_reg; |
| 4802 | |
| 4803 | ENTER; |
| 4804 | ipr_cmd->job_step = ipr_ioafp_indentify_hrrq; |
| 4805 | ipr_init_ioa_mem(ioa_cfg); |
| 4806 | |
| 4807 | ioa_cfg->allow_interrupts = 1; |
| 4808 | int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); |
| 4809 | |
| 4810 | if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { |
| 4811 | writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), |
| 4812 | ioa_cfg->regs.clr_interrupt_mask_reg); |
| 4813 | int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); |
| 4814 | return IPR_RC_JOB_CONTINUE; |
| 4815 | } |
| 4816 | |
| 4817 | /* Enable destructive diagnostics on IOA */ |
| 4818 | writel(IPR_DOORBELL, ioa_cfg->regs.set_uproc_interrupt_reg); |
| 4819 | |
| 4820 | writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg); |
| 4821 | int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); |
| 4822 | |
| 4823 | dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); |
| 4824 | |
| 4825 | ipr_cmd->timer.data = (unsigned long) ipr_cmd; |
| 4826 | ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ); |
| 4827 | ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; |
| 4828 | ipr_cmd->done = ipr_reset_ioa_job; |
| 4829 | add_timer(&ipr_cmd->timer); |
| 4830 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); |
| 4831 | |
| 4832 | LEAVE; |
| 4833 | return IPR_RC_JOB_RETURN; |
| 4834 | } |
| 4835 | |
| 4836 | /** |
| 4837 | * ipr_reset_wait_for_dump - Wait for a dump to timeout. |
| 4838 | * @ipr_cmd: ipr command struct |
| 4839 | * |
| 4840 | * This function is invoked when an adapter dump has run out |
| 4841 | * of processing time. |
| 4842 | * |
| 4843 | * Return value: |
| 4844 | * IPR_RC_JOB_CONTINUE |
| 4845 | **/ |
| 4846 | static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) |
| 4847 | { |
| 4848 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 4849 | |
| 4850 | if (ioa_cfg->sdt_state == GET_DUMP) |
| 4851 | ioa_cfg->sdt_state = ABORT_DUMP; |
| 4852 | |
| 4853 | ipr_cmd->job_step = ipr_reset_alert; |
| 4854 | |
| 4855 | return IPR_RC_JOB_CONTINUE; |
| 4856 | } |
| 4857 | |
| 4858 | /** |
| 4859 | * ipr_unit_check_no_data - Log a unit check/no data error log |
| 4860 | * @ioa_cfg: ioa config struct |
| 4861 | * |
| 4862 | * Logs an error indicating the adapter unit checked, but for some |
| 4863 | * reason, we were unable to fetch the unit check buffer. |
| 4864 | * |
| 4865 | * Return value: |
| 4866 | * nothing |
| 4867 | **/ |
| 4868 | static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) |
| 4869 | { |
| 4870 | ioa_cfg->errors_logged++; |
| 4871 | dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); |
| 4872 | } |
| 4873 | |
| 4874 | /** |
| 4875 | * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA |
| 4876 | * @ioa_cfg: ioa config struct |
| 4877 | * |
| 4878 | * Fetches the unit check buffer from the adapter by clocking the data |
| 4879 | * through the mailbox register. |
| 4880 | * |
| 4881 | * Return value: |
| 4882 | * nothing |
| 4883 | **/ |
| 4884 | static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) |
| 4885 | { |
| 4886 | unsigned long mailbox; |
| 4887 | struct ipr_hostrcb *hostrcb; |
| 4888 | struct ipr_uc_sdt sdt; |
| 4889 | int rc, length; |
| 4890 | |
| 4891 | mailbox = readl(ioa_cfg->ioa_mailbox); |
| 4892 | |
| 4893 | if (!ipr_sdt_is_fmt2(mailbox)) { |
| 4894 | ipr_unit_check_no_data(ioa_cfg); |
| 4895 | return; |
| 4896 | } |
| 4897 | |
| 4898 | memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); |
| 4899 | rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, |
| 4900 | (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); |
| 4901 | |
| 4902 | if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) || |
| 4903 | !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) { |
| 4904 | ipr_unit_check_no_data(ioa_cfg); |
| 4905 | return; |
| 4906 | } |
| 4907 | |
| 4908 | /* Find length of the first sdt entry (UC buffer) */ |
| 4909 | length = (be32_to_cpu(sdt.entry[0].end_offset) - |
| 4910 | be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK; |
| 4911 | |
| 4912 | hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, |
| 4913 | struct ipr_hostrcb, queue); |
| 4914 | list_del(&hostrcb->queue); |
| 4915 | memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); |
| 4916 | |
| 4917 | rc = ipr_get_ldump_data_section(ioa_cfg, |
| 4918 | be32_to_cpu(sdt.entry[0].bar_str_offset), |
| 4919 | (__be32 *)&hostrcb->hcam, |
| 4920 | min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); |
| 4921 | |
| 4922 | if (!rc) |
| 4923 | ipr_handle_log_data(ioa_cfg, hostrcb); |
| 4924 | else |
| 4925 | ipr_unit_check_no_data(ioa_cfg); |
| 4926 | |
| 4927 | list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); |
| 4928 | } |
| 4929 | |
| 4930 | /** |
| 4931 | * ipr_reset_restore_cfg_space - Restore PCI config space. |
| 4932 | * @ipr_cmd: ipr command struct |
| 4933 | * |
| 4934 | * Description: This function restores the saved PCI config space of |
| 4935 | * the adapter, fails all outstanding ops back to the callers, and |
| 4936 | * fetches the dump/unit check if applicable to this reset. |
| 4937 | * |
| 4938 | * Return value: |
| 4939 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN |
| 4940 | **/ |
| 4941 | static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) |
| 4942 | { |
| 4943 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 4944 | int rc; |
| 4945 | |
| 4946 | ENTER; |
| 4947 | rc = pci_restore_state(ioa_cfg->pdev); |
| 4948 | |
| 4949 | if (rc != PCIBIOS_SUCCESSFUL) { |
| 4950 | ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); |
| 4951 | return IPR_RC_JOB_CONTINUE; |
| 4952 | } |
| 4953 | |
| 4954 | if (ipr_set_pcix_cmd_reg(ioa_cfg)) { |
| 4955 | ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); |
| 4956 | return IPR_RC_JOB_CONTINUE; |
| 4957 | } |
| 4958 | |
| 4959 | ipr_fail_all_ops(ioa_cfg); |
| 4960 | |
| 4961 | if (ioa_cfg->ioa_unit_checked) { |
| 4962 | ioa_cfg->ioa_unit_checked = 0; |
| 4963 | ipr_get_unit_check_buffer(ioa_cfg); |
| 4964 | ipr_cmd->job_step = ipr_reset_alert; |
| 4965 | ipr_reset_start_timer(ipr_cmd, 0); |
| 4966 | return IPR_RC_JOB_RETURN; |
| 4967 | } |
| 4968 | |
| 4969 | if (ioa_cfg->in_ioa_bringdown) { |
| 4970 | ipr_cmd->job_step = ipr_ioa_bringdown_done; |
| 4971 | } else { |
| 4972 | ipr_cmd->job_step = ipr_reset_enable_ioa; |
| 4973 | |
| 4974 | if (GET_DUMP == ioa_cfg->sdt_state) { |
| 4975 | ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); |
| 4976 | ipr_cmd->job_step = ipr_reset_wait_for_dump; |
| 4977 | schedule_work(&ioa_cfg->work_q); |
| 4978 | return IPR_RC_JOB_RETURN; |
| 4979 | } |
| 4980 | } |
| 4981 | |
| 4982 | ENTER; |
| 4983 | return IPR_RC_JOB_CONTINUE; |
| 4984 | } |
| 4985 | |
| 4986 | /** |
| 4987 | * ipr_reset_start_bist - Run BIST on the adapter. |
| 4988 | * @ipr_cmd: ipr command struct |
| 4989 | * |
| 4990 | * Description: This function runs BIST on the adapter, then delays 2 seconds. |
| 4991 | * |
| 4992 | * Return value: |
| 4993 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN |
| 4994 | **/ |
| 4995 | static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) |
| 4996 | { |
| 4997 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 4998 | int rc; |
| 4999 | |
| 5000 | ENTER; |
| 5001 | rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); |
| 5002 | |
| 5003 | if (rc != PCIBIOS_SUCCESSFUL) { |
| 5004 | ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); |
| 5005 | rc = IPR_RC_JOB_CONTINUE; |
| 5006 | } else { |
| 5007 | ipr_cmd->job_step = ipr_reset_restore_cfg_space; |
| 5008 | ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); |
| 5009 | rc = IPR_RC_JOB_RETURN; |
| 5010 | } |
| 5011 | |
| 5012 | LEAVE; |
| 5013 | return rc; |
| 5014 | } |
| 5015 | |
| 5016 | /** |
| 5017 | * ipr_reset_allowed - Query whether or not IOA can be reset |
| 5018 | * @ioa_cfg: ioa config struct |
| 5019 | * |
| 5020 | * Return value: |
| 5021 | * 0 if reset not allowed / non-zero if reset is allowed |
| 5022 | **/ |
| 5023 | static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) |
| 5024 | { |
| 5025 | volatile u32 temp_reg; |
| 5026 | |
| 5027 | temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); |
| 5028 | return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); |
| 5029 | } |
| 5030 | |
| 5031 | /** |
| 5032 | * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. |
| 5033 | * @ipr_cmd: ipr command struct |
| 5034 | * |
| 5035 | * Description: This function waits for adapter permission to run BIST, |
| 5036 | * then runs BIST. If the adapter does not give permission after a |
| 5037 | * reasonable time, we will reset the adapter anyway. The impact of |
| 5038 | * resetting the adapter without warning the adapter is the risk of |
| 5039 | * losing the persistent error log on the adapter. If the adapter is |
| 5040 | * reset while it is writing to the flash on the adapter, the flash |
| 5041 | * segment will have bad ECC and be zeroed. |
| 5042 | * |
| 5043 | * Return value: |
| 5044 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN |
| 5045 | **/ |
| 5046 | static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) |
| 5047 | { |
| 5048 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 5049 | int rc = IPR_RC_JOB_RETURN; |
| 5050 | |
| 5051 | if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { |
| 5052 | ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; |
| 5053 | ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); |
| 5054 | } else { |
| 5055 | ipr_cmd->job_step = ipr_reset_start_bist; |
| 5056 | rc = IPR_RC_JOB_CONTINUE; |
| 5057 | } |
| 5058 | |
| 5059 | return rc; |
| 5060 | } |
| 5061 | |
| 5062 | /** |
| 5063 | * ipr_reset_alert_part2 - Alert the adapter of a pending reset |
| 5064 | * @ipr_cmd: ipr command struct |
| 5065 | * |
| 5066 | * Description: This function alerts the adapter that it will be reset. |
| 5067 | * If memory space is not currently enabled, proceed directly |
| 5068 | * to running BIST on the adapter. The timer must always be started |
| 5069 | * so we guarantee we do not run BIST from ipr_isr. |
| 5070 | * |
| 5071 | * Return value: |
| 5072 | * IPR_RC_JOB_RETURN |
| 5073 | **/ |
| 5074 | static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) |
| 5075 | { |
| 5076 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 5077 | u16 cmd_reg; |
| 5078 | int rc; |
| 5079 | |
| 5080 | ENTER; |
| 5081 | rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); |
| 5082 | |
| 5083 | if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { |
| 5084 | ipr_mask_and_clear_interrupts(ioa_cfg, ~0); |
| 5085 | writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg); |
| 5086 | ipr_cmd->job_step = ipr_reset_wait_to_start_bist; |
| 5087 | } else { |
| 5088 | ipr_cmd->job_step = ipr_reset_start_bist; |
| 5089 | } |
| 5090 | |
| 5091 | ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; |
| 5092 | ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); |
| 5093 | |
| 5094 | LEAVE; |
| 5095 | return IPR_RC_JOB_RETURN; |
| 5096 | } |
| 5097 | |
| 5098 | /** |
| 5099 | * ipr_reset_ucode_download_done - Microcode download completion |
| 5100 | * @ipr_cmd: ipr command struct |
| 5101 | * |
| 5102 | * Description: This function unmaps the microcode download buffer. |
| 5103 | * |
| 5104 | * Return value: |
| 5105 | * IPR_RC_JOB_CONTINUE |
| 5106 | **/ |
| 5107 | static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) |
| 5108 | { |
| 5109 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 5110 | struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; |
| 5111 | |
| 5112 | pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, |
| 5113 | sglist->num_sg, DMA_TO_DEVICE); |
| 5114 | |
| 5115 | ipr_cmd->job_step = ipr_reset_alert; |
| 5116 | return IPR_RC_JOB_CONTINUE; |
| 5117 | } |
| 5118 | |
| 5119 | /** |
| 5120 | * ipr_reset_ucode_download - Download microcode to the adapter |
| 5121 | * @ipr_cmd: ipr command struct |
| 5122 | * |
| 5123 | * Description: This function checks to see if it there is microcode |
| 5124 | * to download to the adapter. If there is, a download is performed. |
| 5125 | * |
| 5126 | * Return value: |
| 5127 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN |
| 5128 | **/ |
| 5129 | static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) |
| 5130 | { |
| 5131 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 5132 | struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; |
| 5133 | |
| 5134 | ENTER; |
| 5135 | ipr_cmd->job_step = ipr_reset_alert; |
| 5136 | |
| 5137 | if (!sglist) |
| 5138 | return IPR_RC_JOB_CONTINUE; |
| 5139 | |
| 5140 | ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); |
| 5141 | ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; |
| 5142 | ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; |
| 5143 | ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; |
| 5144 | ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; |
| 5145 | ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; |
| 5146 | ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; |
| 5147 | |
| 5148 | if (ipr_map_ucode_buffer(ipr_cmd, sglist, sglist->buffer_len)) { |
| 5149 | dev_err(&ioa_cfg->pdev->dev, |
| 5150 | "Failed to map microcode download buffer\n"); |
| 5151 | return IPR_RC_JOB_CONTINUE; |
| 5152 | } |
| 5153 | |
| 5154 | ipr_cmd->job_step = ipr_reset_ucode_download_done; |
| 5155 | |
| 5156 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, |
| 5157 | IPR_WRITE_BUFFER_TIMEOUT); |
| 5158 | |
| 5159 | LEAVE; |
| 5160 | return IPR_RC_JOB_RETURN; |
| 5161 | } |
| 5162 | |
| 5163 | /** |
| 5164 | * ipr_reset_shutdown_ioa - Shutdown the adapter |
| 5165 | * @ipr_cmd: ipr command struct |
| 5166 | * |
| 5167 | * Description: This function issues an adapter shutdown of the |
| 5168 | * specified type to the specified adapter as part of the |
| 5169 | * adapter reset job. |
| 5170 | * |
| 5171 | * Return value: |
| 5172 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN |
| 5173 | **/ |
| 5174 | static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) |
| 5175 | { |
| 5176 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 5177 | enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; |
| 5178 | unsigned long timeout; |
| 5179 | int rc = IPR_RC_JOB_CONTINUE; |
| 5180 | |
| 5181 | ENTER; |
| 5182 | if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { |
| 5183 | ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); |
| 5184 | ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; |
| 5185 | ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; |
| 5186 | ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; |
| 5187 | |
| 5188 | if (shutdown_type == IPR_SHUTDOWN_ABBREV) |
| 5189 | timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; |
| 5190 | else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) |
| 5191 | timeout = IPR_INTERNAL_TIMEOUT; |
| 5192 | else |
| 5193 | timeout = IPR_SHUTDOWN_TIMEOUT; |
| 5194 | |
| 5195 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); |
| 5196 | |
| 5197 | rc = IPR_RC_JOB_RETURN; |
| 5198 | ipr_cmd->job_step = ipr_reset_ucode_download; |
| 5199 | } else |
| 5200 | ipr_cmd->job_step = ipr_reset_alert; |
| 5201 | |
| 5202 | LEAVE; |
| 5203 | return rc; |
| 5204 | } |
| 5205 | |
| 5206 | /** |
| 5207 | * ipr_reset_ioa_job - Adapter reset job |
| 5208 | * @ipr_cmd: ipr command struct |
| 5209 | * |
| 5210 | * Description: This function is the job router for the adapter reset job. |
| 5211 | * |
| 5212 | * Return value: |
| 5213 | * none |
| 5214 | **/ |
| 5215 | static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) |
| 5216 | { |
| 5217 | u32 rc, ioasc; |
| 5218 | unsigned long scratch = ipr_cmd->u.scratch; |
| 5219 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| 5220 | |
| 5221 | do { |
| 5222 | ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| 5223 | |
| 5224 | if (ioa_cfg->reset_cmd != ipr_cmd) { |
| 5225 | /* |
| 5226 | * We are doing nested adapter resets and this is |
| 5227 | * not the current reset job. |
| 5228 | */ |
| 5229 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| 5230 | return; |
| 5231 | } |
| 5232 | |
| 5233 | if (IPR_IOASC_SENSE_KEY(ioasc)) { |
| 5234 | dev_err(&ioa_cfg->pdev->dev, |
| 5235 | "0x%02X failed with IOASC: 0x%08X\n", |
| 5236 | ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); |
| 5237 | |
| 5238 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); |
| 5239 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| 5240 | return; |
| 5241 | } |
| 5242 | |
| 5243 | ipr_reinit_ipr_cmnd(ipr_cmd); |
| 5244 | ipr_cmd->u.scratch = scratch; |
| 5245 | rc = ipr_cmd->job_step(ipr_cmd); |
| 5246 | } while(rc == IPR_RC_JOB_CONTINUE); |
| 5247 | } |
| 5248 | |
| 5249 | /** |
| 5250 | * _ipr_initiate_ioa_reset - Initiate an adapter reset |
| 5251 | * @ioa_cfg: ioa config struct |
| 5252 | * @job_step: first job step of reset job |
| 5253 | * @shutdown_type: shutdown type |
| 5254 | * |
| 5255 | * Description: This function will initiate the reset of the given adapter |
| 5256 | * starting at the selected job step. |
| 5257 | * If the caller needs to wait on the completion of the reset, |
| 5258 | * the caller must sleep on the reset_wait_q. |
| 5259 | * |
| 5260 | * Return value: |
| 5261 | * none |
| 5262 | **/ |
| 5263 | static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, |
| 5264 | int (*job_step) (struct ipr_cmnd *), |
| 5265 | enum ipr_shutdown_type shutdown_type) |
| 5266 | { |
| 5267 | struct ipr_cmnd *ipr_cmd; |
| 5268 | |
| 5269 | ioa_cfg->in_reset_reload = 1; |
| 5270 | ioa_cfg->allow_cmds = 0; |
| 5271 | scsi_block_requests(ioa_cfg->host); |
| 5272 | |
| 5273 | ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); |
| 5274 | ioa_cfg->reset_cmd = ipr_cmd; |
| 5275 | ipr_cmd->job_step = job_step; |
| 5276 | ipr_cmd->u.shutdown_type = shutdown_type; |
| 5277 | |
| 5278 | ipr_reset_ioa_job(ipr_cmd); |
| 5279 | } |
| 5280 | |
| 5281 | /** |
| 5282 | * ipr_initiate_ioa_reset - Initiate an adapter reset |
| 5283 | * @ioa_cfg: ioa config struct |
| 5284 | * @shutdown_type: shutdown type |
| 5285 | * |
| 5286 | * Description: This function will initiate the reset of the given adapter. |
| 5287 | * If the caller needs to wait on the completion of the reset, |
| 5288 | * the caller must sleep on the reset_wait_q. |
| 5289 | * |
| 5290 | * Return value: |
| 5291 | * none |
| 5292 | **/ |
| 5293 | static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, |
| 5294 | enum ipr_shutdown_type shutdown_type) |
| 5295 | { |
| 5296 | if (ioa_cfg->ioa_is_dead) |
| 5297 | return; |
| 5298 | |
| 5299 | if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) |
| 5300 | ioa_cfg->sdt_state = ABORT_DUMP; |
| 5301 | |
| 5302 | if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { |
| 5303 | dev_err(&ioa_cfg->pdev->dev, |
| 5304 | "IOA taken offline - error recovery failed\n"); |
| 5305 | |
| 5306 | ioa_cfg->reset_retries = 0; |
| 5307 | ioa_cfg->ioa_is_dead = 1; |
| 5308 | |
| 5309 | if (ioa_cfg->in_ioa_bringdown) { |
| 5310 | ioa_cfg->reset_cmd = NULL; |
| 5311 | ioa_cfg->in_reset_reload = 0; |
| 5312 | ipr_fail_all_ops(ioa_cfg); |
| 5313 | wake_up_all(&ioa_cfg->reset_wait_q); |
| 5314 | |
| 5315 | spin_unlock_irq(ioa_cfg->host->host_lock); |
| 5316 | scsi_unblock_requests(ioa_cfg->host); |
| 5317 | spin_lock_irq(ioa_cfg->host->host_lock); |
| 5318 | return; |
| 5319 | } else { |
| 5320 | ioa_cfg->in_ioa_bringdown = 1; |
| 5321 | shutdown_type = IPR_SHUTDOWN_NONE; |
| 5322 | } |
| 5323 | } |
| 5324 | |
| 5325 | _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, |
| 5326 | shutdown_type); |
| 5327 | } |
| 5328 | |
| 5329 | /** |
| 5330 | * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) |
| 5331 | * @ioa_cfg: ioa cfg struct |
| 5332 | * |
| 5333 | * Description: This is the second phase of adapter intialization |
| 5334 | * This function takes care of initilizing the adapter to the point |
| 5335 | * where it can accept new commands. |
| 5336 | |
| 5337 | * Return value: |
| 5338 | * 0 on sucess / -EIO on failure |
| 5339 | **/ |
| 5340 | static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) |
| 5341 | { |
| 5342 | int rc = 0; |
| 5343 | unsigned long host_lock_flags = 0; |
| 5344 | |
| 5345 | ENTER; |
| 5346 | spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); |
| 5347 | dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); |
| 5348 | _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, IPR_SHUTDOWN_NONE); |
| 5349 | |
| 5350 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); |
| 5351 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
| 5352 | spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); |
| 5353 | |
| 5354 | if (ioa_cfg->ioa_is_dead) { |
| 5355 | rc = -EIO; |
| 5356 | } else if (ipr_invalid_adapter(ioa_cfg)) { |
| 5357 | if (!ipr_testmode) |
| 5358 | rc = -EIO; |
| 5359 | |
| 5360 | dev_err(&ioa_cfg->pdev->dev, |
| 5361 | "Adapter not supported in this hardware configuration.\n"); |
| 5362 | } |
| 5363 | |
| 5364 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); |
| 5365 | |
| 5366 | LEAVE; |
| 5367 | return rc; |
| 5368 | } |
| 5369 | |
| 5370 | /** |
| 5371 | * ipr_free_cmd_blks - Frees command blocks allocated for an adapter |
| 5372 | * @ioa_cfg: ioa config struct |
| 5373 | * |
| 5374 | * Return value: |
| 5375 | * none |
| 5376 | **/ |
| 5377 | static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) |
| 5378 | { |
| 5379 | int i; |
| 5380 | |
| 5381 | for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { |
| 5382 | if (ioa_cfg->ipr_cmnd_list[i]) |
| 5383 | pci_pool_free(ioa_cfg->ipr_cmd_pool, |
| 5384 | ioa_cfg->ipr_cmnd_list[i], |
| 5385 | ioa_cfg->ipr_cmnd_list_dma[i]); |
| 5386 | |
| 5387 | ioa_cfg->ipr_cmnd_list[i] = NULL; |
| 5388 | } |
| 5389 | |
| 5390 | if (ioa_cfg->ipr_cmd_pool) |
| 5391 | pci_pool_destroy (ioa_cfg->ipr_cmd_pool); |
| 5392 | |
| 5393 | ioa_cfg->ipr_cmd_pool = NULL; |
| 5394 | } |
| 5395 | |
| 5396 | /** |
| 5397 | * ipr_free_mem - Frees memory allocated for an adapter |
| 5398 | * @ioa_cfg: ioa cfg struct |
| 5399 | * |
| 5400 | * Return value: |
| 5401 | * nothing |
| 5402 | **/ |
| 5403 | static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) |
| 5404 | { |
| 5405 | int i; |
| 5406 | |
| 5407 | kfree(ioa_cfg->res_entries); |
| 5408 | pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), |
| 5409 | ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); |
| 5410 | ipr_free_cmd_blks(ioa_cfg); |
| 5411 | pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, |
| 5412 | ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); |
| 5413 | pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table), |
| 5414 | ioa_cfg->cfg_table, |
| 5415 | ioa_cfg->cfg_table_dma); |
| 5416 | |
| 5417 | for (i = 0; i < IPR_NUM_HCAMS; i++) { |
| 5418 | pci_free_consistent(ioa_cfg->pdev, |
| 5419 | sizeof(struct ipr_hostrcb), |
| 5420 | ioa_cfg->hostrcb[i], |
| 5421 | ioa_cfg->hostrcb_dma[i]); |
| 5422 | } |
| 5423 | |
| 5424 | ipr_free_dump(ioa_cfg); |
| 5425 | kfree(ioa_cfg->saved_mode_pages); |
| 5426 | kfree(ioa_cfg->trace); |
| 5427 | } |
| 5428 | |
| 5429 | /** |
| 5430 | * ipr_free_all_resources - Free all allocated resources for an adapter. |
| 5431 | * @ipr_cmd: ipr command struct |
| 5432 | * |
| 5433 | * This function frees all allocated resources for the |
| 5434 | * specified adapter. |
| 5435 | * |
| 5436 | * Return value: |
| 5437 | * none |
| 5438 | **/ |
| 5439 | static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) |
| 5440 | { |
| 5441 | struct pci_dev *pdev = ioa_cfg->pdev; |
| 5442 | |
| 5443 | ENTER; |
| 5444 | free_irq(pdev->irq, ioa_cfg); |
| 5445 | iounmap(ioa_cfg->hdw_dma_regs); |
| 5446 | pci_release_regions(pdev); |
| 5447 | ipr_free_mem(ioa_cfg); |
| 5448 | scsi_host_put(ioa_cfg->host); |
| 5449 | pci_disable_device(pdev); |
| 5450 | LEAVE; |
| 5451 | } |
| 5452 | |
| 5453 | /** |
| 5454 | * ipr_alloc_cmd_blks - Allocate command blocks for an adapter |
| 5455 | * @ioa_cfg: ioa config struct |
| 5456 | * |
| 5457 | * Return value: |
| 5458 | * 0 on success / -ENOMEM on allocation failure |
| 5459 | **/ |
| 5460 | static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) |
| 5461 | { |
| 5462 | struct ipr_cmnd *ipr_cmd; |
| 5463 | struct ipr_ioarcb *ioarcb; |
| 5464 | dma_addr_t dma_addr; |
| 5465 | int i; |
| 5466 | |
| 5467 | ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, |
| 5468 | sizeof(struct ipr_cmnd), 8, 0); |
| 5469 | |
| 5470 | if (!ioa_cfg->ipr_cmd_pool) |
| 5471 | return -ENOMEM; |
| 5472 | |
| 5473 | for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { |
| 5474 | ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr); |
| 5475 | |
| 5476 | if (!ipr_cmd) { |
| 5477 | ipr_free_cmd_blks(ioa_cfg); |
| 5478 | return -ENOMEM; |
| 5479 | } |
| 5480 | |
| 5481 | memset(ipr_cmd, 0, sizeof(*ipr_cmd)); |
| 5482 | ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; |
| 5483 | ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; |
| 5484 | |
| 5485 | ioarcb = &ipr_cmd->ioarcb; |
| 5486 | ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr); |
| 5487 | ioarcb->host_response_handle = cpu_to_be32(i << 2); |
| 5488 | ioarcb->write_ioadl_addr = |
| 5489 | cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); |
| 5490 | ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; |
| 5491 | ioarcb->ioasa_host_pci_addr = |
| 5492 | cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa)); |
| 5493 | ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); |
| 5494 | ipr_cmd->cmd_index = i; |
| 5495 | ipr_cmd->ioa_cfg = ioa_cfg; |
| 5496 | ipr_cmd->sense_buffer_dma = dma_addr + |
| 5497 | offsetof(struct ipr_cmnd, sense_buffer); |
| 5498 | |
| 5499 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| 5500 | } |
| 5501 | |
| 5502 | return 0; |
| 5503 | } |
| 5504 | |
| 5505 | /** |
| 5506 | * ipr_alloc_mem - Allocate memory for an adapter |
| 5507 | * @ioa_cfg: ioa config struct |
| 5508 | * |
| 5509 | * Return value: |
| 5510 | * 0 on success / non-zero for error |
| 5511 | **/ |
| 5512 | static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) |
| 5513 | { |
| 5514 | struct pci_dev *pdev = ioa_cfg->pdev; |
| 5515 | int i, rc = -ENOMEM; |
| 5516 | |
| 5517 | ENTER; |
| 5518 | ioa_cfg->res_entries = kmalloc(sizeof(struct ipr_resource_entry) * |
| 5519 | IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL); |
| 5520 | |
| 5521 | if (!ioa_cfg->res_entries) |
| 5522 | goto out; |
| 5523 | |
| 5524 | memset(ioa_cfg->res_entries, 0, |
| 5525 | sizeof(struct ipr_resource_entry) * IPR_MAX_PHYSICAL_DEVS); |
| 5526 | |
| 5527 | for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++) |
| 5528 | list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); |
| 5529 | |
| 5530 | ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, |
| 5531 | sizeof(struct ipr_misc_cbs), |
| 5532 | &ioa_cfg->vpd_cbs_dma); |
| 5533 | |
| 5534 | if (!ioa_cfg->vpd_cbs) |
| 5535 | goto out_free_res_entries; |
| 5536 | |
| 5537 | if (ipr_alloc_cmd_blks(ioa_cfg)) |
| 5538 | goto out_free_vpd_cbs; |
| 5539 | |
| 5540 | ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, |
| 5541 | sizeof(u32) * IPR_NUM_CMD_BLKS, |
| 5542 | &ioa_cfg->host_rrq_dma); |
| 5543 | |
| 5544 | if (!ioa_cfg->host_rrq) |
| 5545 | goto out_ipr_free_cmd_blocks; |
| 5546 | |
| 5547 | ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev, |
| 5548 | sizeof(struct ipr_config_table), |
| 5549 | &ioa_cfg->cfg_table_dma); |
| 5550 | |
| 5551 | if (!ioa_cfg->cfg_table) |
| 5552 | goto out_free_host_rrq; |
| 5553 | |
| 5554 | for (i = 0; i < IPR_NUM_HCAMS; i++) { |
| 5555 | ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, |
| 5556 | sizeof(struct ipr_hostrcb), |
| 5557 | &ioa_cfg->hostrcb_dma[i]); |
| 5558 | |
| 5559 | if (!ioa_cfg->hostrcb[i]) |
| 5560 | goto out_free_hostrcb_dma; |
| 5561 | |
| 5562 | ioa_cfg->hostrcb[i]->hostrcb_dma = |
| 5563 | ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); |
| 5564 | list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); |
| 5565 | } |
| 5566 | |
| 5567 | ioa_cfg->trace = kmalloc(sizeof(struct ipr_trace_entry) * |
| 5568 | IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); |
| 5569 | |
| 5570 | if (!ioa_cfg->trace) |
| 5571 | goto out_free_hostrcb_dma; |
| 5572 | |
| 5573 | memset(ioa_cfg->trace, 0, |
| 5574 | sizeof(struct ipr_trace_entry) * IPR_NUM_TRACE_ENTRIES); |
| 5575 | |
| 5576 | rc = 0; |
| 5577 | out: |
| 5578 | LEAVE; |
| 5579 | return rc; |
| 5580 | |
| 5581 | out_free_hostrcb_dma: |
| 5582 | while (i-- > 0) { |
| 5583 | pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), |
| 5584 | ioa_cfg->hostrcb[i], |
| 5585 | ioa_cfg->hostrcb_dma[i]); |
| 5586 | } |
| 5587 | pci_free_consistent(pdev, sizeof(struct ipr_config_table), |
| 5588 | ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma); |
| 5589 | out_free_host_rrq: |
| 5590 | pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, |
| 5591 | ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); |
| 5592 | out_ipr_free_cmd_blocks: |
| 5593 | ipr_free_cmd_blks(ioa_cfg); |
| 5594 | out_free_vpd_cbs: |
| 5595 | pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), |
| 5596 | ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); |
| 5597 | out_free_res_entries: |
| 5598 | kfree(ioa_cfg->res_entries); |
| 5599 | goto out; |
| 5600 | } |
| 5601 | |
| 5602 | /** |
| 5603 | * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values |
| 5604 | * @ioa_cfg: ioa config struct |
| 5605 | * |
| 5606 | * Return value: |
| 5607 | * none |
| 5608 | **/ |
| 5609 | static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) |
| 5610 | { |
| 5611 | int i; |
| 5612 | |
| 5613 | for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { |
| 5614 | ioa_cfg->bus_attr[i].bus = i; |
| 5615 | ioa_cfg->bus_attr[i].qas_enabled = 0; |
| 5616 | ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; |
| 5617 | if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) |
| 5618 | ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; |
| 5619 | else |
| 5620 | ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; |
| 5621 | } |
| 5622 | } |
| 5623 | |
| 5624 | /** |
| 5625 | * ipr_init_ioa_cfg - Initialize IOA config struct |
| 5626 | * @ioa_cfg: ioa config struct |
| 5627 | * @host: scsi host struct |
| 5628 | * @pdev: PCI dev struct |
| 5629 | * |
| 5630 | * Return value: |
| 5631 | * none |
| 5632 | **/ |
| 5633 | static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, |
| 5634 | struct Scsi_Host *host, struct pci_dev *pdev) |
| 5635 | { |
| 5636 | const struct ipr_interrupt_offsets *p; |
| 5637 | struct ipr_interrupts *t; |
| 5638 | void __iomem *base; |
| 5639 | |
| 5640 | ioa_cfg->host = host; |
| 5641 | ioa_cfg->pdev = pdev; |
| 5642 | ioa_cfg->log_level = ipr_log_level; |
| 5643 | sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); |
| 5644 | sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); |
| 5645 | sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); |
| 5646 | sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); |
| 5647 | sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); |
| 5648 | sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); |
| 5649 | sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); |
| 5650 | sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); |
| 5651 | |
| 5652 | INIT_LIST_HEAD(&ioa_cfg->free_q); |
| 5653 | INIT_LIST_HEAD(&ioa_cfg->pending_q); |
| 5654 | INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); |
| 5655 | INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); |
| 5656 | INIT_LIST_HEAD(&ioa_cfg->free_res_q); |
| 5657 | INIT_LIST_HEAD(&ioa_cfg->used_res_q); |
| 5658 | INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg); |
| 5659 | init_waitqueue_head(&ioa_cfg->reset_wait_q); |
| 5660 | ioa_cfg->sdt_state = INACTIVE; |
| 5661 | |
| 5662 | ipr_initialize_bus_attr(ioa_cfg); |
| 5663 | |
| 5664 | host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; |
| 5665 | host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; |
| 5666 | host->max_channel = IPR_MAX_BUS_TO_SCAN; |
| 5667 | host->unique_id = host->host_no; |
| 5668 | host->max_cmd_len = IPR_MAX_CDB_LEN; |
| 5669 | pci_set_drvdata(pdev, ioa_cfg); |
| 5670 | |
| 5671 | p = &ioa_cfg->chip_cfg->regs; |
| 5672 | t = &ioa_cfg->regs; |
| 5673 | base = ioa_cfg->hdw_dma_regs; |
| 5674 | |
| 5675 | t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; |
| 5676 | t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; |
| 5677 | t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; |
| 5678 | t->clr_interrupt_reg = base + p->clr_interrupt_reg; |
| 5679 | t->sense_interrupt_reg = base + p->sense_interrupt_reg; |
| 5680 | t->ioarrin_reg = base + p->ioarrin_reg; |
| 5681 | t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; |
| 5682 | t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; |
| 5683 | t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; |
| 5684 | } |
| 5685 | |
| 5686 | /** |
| 5687 | * ipr_get_chip_cfg - Find adapter chip configuration |
| 5688 | * @dev_id: PCI device id struct |
| 5689 | * |
| 5690 | * Return value: |
| 5691 | * ptr to chip config on success / NULL on failure |
| 5692 | **/ |
| 5693 | static const struct ipr_chip_cfg_t * __devinit |
| 5694 | ipr_get_chip_cfg(const struct pci_device_id *dev_id) |
| 5695 | { |
| 5696 | int i; |
| 5697 | |
| 5698 | if (dev_id->driver_data) |
| 5699 | return (const struct ipr_chip_cfg_t *)dev_id->driver_data; |
| 5700 | |
| 5701 | for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) |
| 5702 | if (ipr_chip[i].vendor == dev_id->vendor && |
| 5703 | ipr_chip[i].device == dev_id->device) |
| 5704 | return ipr_chip[i].cfg; |
| 5705 | return NULL; |
| 5706 | } |
| 5707 | |
| 5708 | /** |
| 5709 | * ipr_probe_ioa - Allocates memory and does first stage of initialization |
| 5710 | * @pdev: PCI device struct |
| 5711 | * @dev_id: PCI device id struct |
| 5712 | * |
| 5713 | * Return value: |
| 5714 | * 0 on success / non-zero on failure |
| 5715 | **/ |
| 5716 | static int __devinit ipr_probe_ioa(struct pci_dev *pdev, |
| 5717 | const struct pci_device_id *dev_id) |
| 5718 | { |
| 5719 | struct ipr_ioa_cfg *ioa_cfg; |
| 5720 | struct Scsi_Host *host; |
| 5721 | unsigned long ipr_regs_pci; |
| 5722 | void __iomem *ipr_regs; |
| 5723 | u32 rc = PCIBIOS_SUCCESSFUL; |
| 5724 | |
| 5725 | ENTER; |
| 5726 | |
| 5727 | if ((rc = pci_enable_device(pdev))) { |
| 5728 | dev_err(&pdev->dev, "Cannot enable adapter\n"); |
| 5729 | goto out; |
| 5730 | } |
| 5731 | |
| 5732 | dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); |
| 5733 | |
| 5734 | host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); |
| 5735 | |
| 5736 | if (!host) { |
| 5737 | dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); |
| 5738 | rc = -ENOMEM; |
| 5739 | goto out_disable; |
| 5740 | } |
| 5741 | |
| 5742 | ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; |
| 5743 | memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); |
| 5744 | |
| 5745 | ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id); |
| 5746 | |
| 5747 | if (!ioa_cfg->chip_cfg) { |
| 5748 | dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", |
| 5749 | dev_id->vendor, dev_id->device); |
| 5750 | goto out_scsi_host_put; |
| 5751 | } |
| 5752 | |
| 5753 | ipr_regs_pci = pci_resource_start(pdev, 0); |
| 5754 | |
| 5755 | rc = pci_request_regions(pdev, IPR_NAME); |
| 5756 | if (rc < 0) { |
| 5757 | dev_err(&pdev->dev, |
| 5758 | "Couldn't register memory range of registers\n"); |
| 5759 | goto out_scsi_host_put; |
| 5760 | } |
| 5761 | |
| 5762 | ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0)); |
| 5763 | |
| 5764 | if (!ipr_regs) { |
| 5765 | dev_err(&pdev->dev, |
| 5766 | "Couldn't map memory range of registers\n"); |
| 5767 | rc = -ENOMEM; |
| 5768 | goto out_release_regions; |
| 5769 | } |
| 5770 | |
| 5771 | ioa_cfg->hdw_dma_regs = ipr_regs; |
| 5772 | ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; |
| 5773 | ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; |
| 5774 | |
| 5775 | ipr_init_ioa_cfg(ioa_cfg, host, pdev); |
| 5776 | |
| 5777 | pci_set_master(pdev); |
| 5778 | |
| 5779 | rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); |
| 5780 | if (rc < 0) { |
| 5781 | dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); |
| 5782 | goto cleanup_nomem; |
| 5783 | } |
| 5784 | |
| 5785 | rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, |
| 5786 | ioa_cfg->chip_cfg->cache_line_size); |
| 5787 | |
| 5788 | if (rc != PCIBIOS_SUCCESSFUL) { |
| 5789 | dev_err(&pdev->dev, "Write of cache line size failed\n"); |
| 5790 | rc = -EIO; |
| 5791 | goto cleanup_nomem; |
| 5792 | } |
| 5793 | |
| 5794 | /* Save away PCI config space for use following IOA reset */ |
| 5795 | rc = pci_save_state(pdev); |
| 5796 | |
| 5797 | if (rc != PCIBIOS_SUCCESSFUL) { |
| 5798 | dev_err(&pdev->dev, "Failed to save PCI config space\n"); |
| 5799 | rc = -EIO; |
| 5800 | goto cleanup_nomem; |
| 5801 | } |
| 5802 | |
| 5803 | if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) |
| 5804 | goto cleanup_nomem; |
| 5805 | |
| 5806 | if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) |
| 5807 | goto cleanup_nomem; |
| 5808 | |
| 5809 | rc = ipr_alloc_mem(ioa_cfg); |
| 5810 | if (rc < 0) { |
| 5811 | dev_err(&pdev->dev, |
| 5812 | "Couldn't allocate enough memory for device driver!\n"); |
| 5813 | goto cleanup_nomem; |
| 5814 | } |
| 5815 | |
| 5816 | ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); |
| 5817 | rc = request_irq(pdev->irq, ipr_isr, SA_SHIRQ, IPR_NAME, ioa_cfg); |
| 5818 | |
| 5819 | if (rc) { |
| 5820 | dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", |
| 5821 | pdev->irq, rc); |
| 5822 | goto cleanup_nolog; |
| 5823 | } |
| 5824 | |
| 5825 | spin_lock(&ipr_driver_lock); |
| 5826 | list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); |
| 5827 | spin_unlock(&ipr_driver_lock); |
| 5828 | |
| 5829 | LEAVE; |
| 5830 | out: |
| 5831 | return rc; |
| 5832 | |
| 5833 | cleanup_nolog: |
| 5834 | ipr_free_mem(ioa_cfg); |
| 5835 | cleanup_nomem: |
| 5836 | iounmap(ipr_regs); |
| 5837 | out_release_regions: |
| 5838 | pci_release_regions(pdev); |
| 5839 | out_scsi_host_put: |
| 5840 | scsi_host_put(host); |
| 5841 | out_disable: |
| 5842 | pci_disable_device(pdev); |
| 5843 | goto out; |
| 5844 | } |
| 5845 | |
| 5846 | /** |
| 5847 | * ipr_scan_vsets - Scans for VSET devices |
| 5848 | * @ioa_cfg: ioa config struct |
| 5849 | * |
| 5850 | * Description: Since the VSET resources do not follow SAM in that we can have |
| 5851 | * sparse LUNs with no LUN 0, we have to scan for these ourselves. |
| 5852 | * |
| 5853 | * Return value: |
| 5854 | * none |
| 5855 | **/ |
| 5856 | static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) |
| 5857 | { |
| 5858 | int target, lun; |
| 5859 | |
| 5860 | for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) |
| 5861 | for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) |
| 5862 | scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); |
| 5863 | } |
| 5864 | |
| 5865 | /** |
| 5866 | * ipr_initiate_ioa_bringdown - Bring down an adapter |
| 5867 | * @ioa_cfg: ioa config struct |
| 5868 | * @shutdown_type: shutdown type |
| 5869 | * |
| 5870 | * Description: This function will initiate bringing down the adapter. |
| 5871 | * This consists of issuing an IOA shutdown to the adapter |
| 5872 | * to flush the cache, and running BIST. |
| 5873 | * If the caller needs to wait on the completion of the reset, |
| 5874 | * the caller must sleep on the reset_wait_q. |
| 5875 | * |
| 5876 | * Return value: |
| 5877 | * none |
| 5878 | **/ |
| 5879 | static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, |
| 5880 | enum ipr_shutdown_type shutdown_type) |
| 5881 | { |
| 5882 | ENTER; |
| 5883 | if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) |
| 5884 | ioa_cfg->sdt_state = ABORT_DUMP; |
| 5885 | ioa_cfg->reset_retries = 0; |
| 5886 | ioa_cfg->in_ioa_bringdown = 1; |
| 5887 | ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); |
| 5888 | LEAVE; |
| 5889 | } |
| 5890 | |
| 5891 | /** |
| 5892 | * __ipr_remove - Remove a single adapter |
| 5893 | * @pdev: pci device struct |
| 5894 | * |
| 5895 | * Adapter hot plug remove entry point. |
| 5896 | * |
| 5897 | * Return value: |
| 5898 | * none |
| 5899 | **/ |
| 5900 | static void __ipr_remove(struct pci_dev *pdev) |
| 5901 | { |
| 5902 | unsigned long host_lock_flags = 0; |
| 5903 | struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); |
| 5904 | ENTER; |
| 5905 | |
| 5906 | spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); |
| 5907 | ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); |
| 5908 | |
| 5909 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); |
| 5910 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
brking@us.ibm.com | 5cbf5ea | 2005-05-02 19:50:47 -0500 | [diff] [blame] | 5911 | flush_scheduled_work(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5912 | spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); |
| 5913 | |
| 5914 | spin_lock(&ipr_driver_lock); |
| 5915 | list_del(&ioa_cfg->queue); |
| 5916 | spin_unlock(&ipr_driver_lock); |
| 5917 | |
| 5918 | if (ioa_cfg->sdt_state == ABORT_DUMP) |
| 5919 | ioa_cfg->sdt_state = WAIT_FOR_DUMP; |
| 5920 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); |
| 5921 | |
| 5922 | ipr_free_all_resources(ioa_cfg); |
| 5923 | |
| 5924 | LEAVE; |
| 5925 | } |
| 5926 | |
| 5927 | /** |
| 5928 | * ipr_remove - IOA hot plug remove entry point |
| 5929 | * @pdev: pci device struct |
| 5930 | * |
| 5931 | * Adapter hot plug remove entry point. |
| 5932 | * |
| 5933 | * Return value: |
| 5934 | * none |
| 5935 | **/ |
| 5936 | static void ipr_remove(struct pci_dev *pdev) |
| 5937 | { |
| 5938 | struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); |
| 5939 | |
| 5940 | ENTER; |
| 5941 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5942 | ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, |
| 5943 | &ipr_trace_attr); |
| 5944 | ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj, |
| 5945 | &ipr_dump_attr); |
| 5946 | scsi_remove_host(ioa_cfg->host); |
| 5947 | |
| 5948 | __ipr_remove(pdev); |
| 5949 | |
| 5950 | LEAVE; |
| 5951 | } |
| 5952 | |
| 5953 | /** |
| 5954 | * ipr_probe - Adapter hot plug add entry point |
| 5955 | * |
| 5956 | * Return value: |
| 5957 | * 0 on success / non-zero on failure |
| 5958 | **/ |
| 5959 | static int __devinit ipr_probe(struct pci_dev *pdev, |
| 5960 | const struct pci_device_id *dev_id) |
| 5961 | { |
| 5962 | struct ipr_ioa_cfg *ioa_cfg; |
| 5963 | int rc; |
| 5964 | |
| 5965 | rc = ipr_probe_ioa(pdev, dev_id); |
| 5966 | |
| 5967 | if (rc) |
| 5968 | return rc; |
| 5969 | |
| 5970 | ioa_cfg = pci_get_drvdata(pdev); |
| 5971 | rc = ipr_probe_ioa_part2(ioa_cfg); |
| 5972 | |
| 5973 | if (rc) { |
| 5974 | __ipr_remove(pdev); |
| 5975 | return rc; |
| 5976 | } |
| 5977 | |
| 5978 | rc = scsi_add_host(ioa_cfg->host, &pdev->dev); |
| 5979 | |
| 5980 | if (rc) { |
| 5981 | __ipr_remove(pdev); |
| 5982 | return rc; |
| 5983 | } |
| 5984 | |
| 5985 | rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj, |
| 5986 | &ipr_trace_attr); |
| 5987 | |
| 5988 | if (rc) { |
| 5989 | scsi_remove_host(ioa_cfg->host); |
| 5990 | __ipr_remove(pdev); |
| 5991 | return rc; |
| 5992 | } |
| 5993 | |
| 5994 | rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj, |
| 5995 | &ipr_dump_attr); |
| 5996 | |
| 5997 | if (rc) { |
| 5998 | ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, |
| 5999 | &ipr_trace_attr); |
| 6000 | scsi_remove_host(ioa_cfg->host); |
| 6001 | __ipr_remove(pdev); |
| 6002 | return rc; |
| 6003 | } |
| 6004 | |
| 6005 | scsi_scan_host(ioa_cfg->host); |
| 6006 | ipr_scan_vsets(ioa_cfg); |
| 6007 | scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); |
| 6008 | ioa_cfg->allow_ml_add_del = 1; |
| 6009 | schedule_work(&ioa_cfg->work_q); |
| 6010 | return 0; |
| 6011 | } |
| 6012 | |
| 6013 | /** |
| 6014 | * ipr_shutdown - Shutdown handler. |
| 6015 | * @dev: device struct |
| 6016 | * |
| 6017 | * This function is invoked upon system shutdown/reboot. It will issue |
| 6018 | * an adapter shutdown to the adapter to flush the write cache. |
| 6019 | * |
| 6020 | * Return value: |
| 6021 | * none |
| 6022 | **/ |
| 6023 | static void ipr_shutdown(struct device *dev) |
| 6024 | { |
| 6025 | struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(to_pci_dev(dev)); |
| 6026 | unsigned long lock_flags = 0; |
| 6027 | |
| 6028 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| 6029 | ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); |
| 6030 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| 6031 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
| 6032 | } |
| 6033 | |
| 6034 | static struct pci_device_id ipr_pci_table[] __devinitdata = { |
| 6035 | { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, |
| 6036 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, |
| 6037 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| 6038 | { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, |
| 6039 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, |
| 6040 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| 6041 | { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, |
| 6042 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, |
| 6043 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| 6044 | { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, |
| 6045 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, |
| 6046 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| 6047 | { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, |
| 6048 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, |
| 6049 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| 6050 | { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, |
| 6051 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, |
| 6052 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| 6053 | { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, |
| 6054 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, |
| 6055 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| 6056 | { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, |
| 6057 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, |
| 6058 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, |
| 6059 | { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, |
| 6060 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, |
| 6061 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, |
| 6062 | { } |
| 6063 | }; |
| 6064 | MODULE_DEVICE_TABLE(pci, ipr_pci_table); |
| 6065 | |
| 6066 | static struct pci_driver ipr_driver = { |
| 6067 | .name = IPR_NAME, |
| 6068 | .id_table = ipr_pci_table, |
| 6069 | .probe = ipr_probe, |
| 6070 | .remove = ipr_remove, |
| 6071 | .driver = { |
| 6072 | .shutdown = ipr_shutdown, |
| 6073 | }, |
| 6074 | }; |
| 6075 | |
| 6076 | /** |
| 6077 | * ipr_init - Module entry point |
| 6078 | * |
| 6079 | * Return value: |
| 6080 | * 0 on success / negative value on failure |
| 6081 | **/ |
| 6082 | static int __init ipr_init(void) |
| 6083 | { |
| 6084 | ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", |
| 6085 | IPR_DRIVER_VERSION, IPR_DRIVER_DATE); |
| 6086 | |
| 6087 | return pci_module_init(&ipr_driver); |
| 6088 | } |
| 6089 | |
| 6090 | /** |
| 6091 | * ipr_exit - Module unload |
| 6092 | * |
| 6093 | * Module unload entry point. |
| 6094 | * |
| 6095 | * Return value: |
| 6096 | * none |
| 6097 | **/ |
| 6098 | static void __exit ipr_exit(void) |
| 6099 | { |
| 6100 | pci_unregister_driver(&ipr_driver); |
| 6101 | } |
| 6102 | |
| 6103 | module_init(ipr_init); |
| 6104 | module_exit(ipr_exit); |