ipr.c revision 64ffdb762241c0a9c0c8fac7ea92aa0ba1529334
1/* 2 * ipr.c -- driver for IBM Power Linux RAID adapters 3 * 4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation 5 * 6 * Copyright (C) 2003, 2004 IBM Corporation 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23 24/* 25 * Notes: 26 * 27 * This driver is used to control the following SCSI adapters: 28 * 29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B 30 * 31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter 32 * PCI-X Dual Channel Ultra 320 SCSI Adapter 33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card 34 * Embedded SCSI adapter on p615 and p655 systems 35 * 36 * Supported Hardware Features: 37 * - Ultra 320 SCSI controller 38 * - PCI-X host interface 39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine 40 * - Non-Volatile Write Cache 41 * - Supports attachment of non-RAID disks, tape, and optical devices 42 * - RAID Levels 0, 5, 10 43 * - Hot spare 44 * - Background Parity Checking 45 * - Background Data Scrubbing 46 * - Ability to increase the capacity of an existing RAID 5 disk array 47 * by adding disks 48 * 49 * Driver Features: 50 * - Tagged command queuing 51 * - Adapter microcode download 52 * - PCI hot plug 53 * - SCSI device hot plug 54 * 55 */ 56 57#include <linux/fs.h> 58#include <linux/init.h> 59#include <linux/types.h> 60#include <linux/errno.h> 61#include <linux/kernel.h> 62#include <linux/slab.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 <linux/libata.h> 75#include <linux/hdreg.h> 76#include <linux/reboot.h> 77#include <linux/stringify.h> 78#include <asm/io.h> 79#include <asm/irq.h> 80#include <asm/processor.h> 81#include <scsi/scsi.h> 82#include <scsi/scsi_host.h> 83#include <scsi/scsi_tcq.h> 84#include <scsi/scsi_eh.h> 85#include <scsi/scsi_cmnd.h> 86#include "ipr.h" 87 88/* 89 * Global Data 90 */ 91static LIST_HEAD(ipr_ioa_head); 92static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL; 93static unsigned int ipr_max_speed = 1; 94static int ipr_testmode = 0; 95static unsigned int ipr_fastfail = 0; 96static unsigned int ipr_transop_timeout = 0; 97static unsigned int ipr_debug = 0; 98static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS; 99static unsigned int ipr_dual_ioa_raid = 1; 100static DEFINE_SPINLOCK(ipr_driver_lock); 101 102/* This table describes the differences between DMA controller chips */ 103static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { 104 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */ 105 .mailbox = 0x0042C, 106 .cache_line_size = 0x20, 107 { 108 .set_interrupt_mask_reg = 0x0022C, 109 .clr_interrupt_mask_reg = 0x00230, 110 .clr_interrupt_mask_reg32 = 0x00230, 111 .sense_interrupt_mask_reg = 0x0022C, 112 .sense_interrupt_mask_reg32 = 0x0022C, 113 .clr_interrupt_reg = 0x00228, 114 .clr_interrupt_reg32 = 0x00228, 115 .sense_interrupt_reg = 0x00224, 116 .sense_interrupt_reg32 = 0x00224, 117 .ioarrin_reg = 0x00404, 118 .sense_uproc_interrupt_reg = 0x00214, 119 .sense_uproc_interrupt_reg32 = 0x00214, 120 .set_uproc_interrupt_reg = 0x00214, 121 .set_uproc_interrupt_reg32 = 0x00214, 122 .clr_uproc_interrupt_reg = 0x00218, 123 .clr_uproc_interrupt_reg32 = 0x00218 124 } 125 }, 126 { /* Snipe and Scamp */ 127 .mailbox = 0x0052C, 128 .cache_line_size = 0x20, 129 { 130 .set_interrupt_mask_reg = 0x00288, 131 .clr_interrupt_mask_reg = 0x0028C, 132 .clr_interrupt_mask_reg32 = 0x0028C, 133 .sense_interrupt_mask_reg = 0x00288, 134 .sense_interrupt_mask_reg32 = 0x00288, 135 .clr_interrupt_reg = 0x00284, 136 .clr_interrupt_reg32 = 0x00284, 137 .sense_interrupt_reg = 0x00280, 138 .sense_interrupt_reg32 = 0x00280, 139 .ioarrin_reg = 0x00504, 140 .sense_uproc_interrupt_reg = 0x00290, 141 .sense_uproc_interrupt_reg32 = 0x00290, 142 .set_uproc_interrupt_reg = 0x00290, 143 .set_uproc_interrupt_reg32 = 0x00290, 144 .clr_uproc_interrupt_reg = 0x00294, 145 .clr_uproc_interrupt_reg32 = 0x00294 146 } 147 }, 148 { /* CRoC */ 149 .mailbox = 0x00040, 150 .cache_line_size = 0x20, 151 { 152 .set_interrupt_mask_reg = 0x00010, 153 .clr_interrupt_mask_reg = 0x00018, 154 .clr_interrupt_mask_reg32 = 0x0001C, 155 .sense_interrupt_mask_reg = 0x00010, 156 .sense_interrupt_mask_reg32 = 0x00014, 157 .clr_interrupt_reg = 0x00008, 158 .clr_interrupt_reg32 = 0x0000C, 159 .sense_interrupt_reg = 0x00000, 160 .sense_interrupt_reg32 = 0x00004, 161 .ioarrin_reg = 0x00070, 162 .sense_uproc_interrupt_reg = 0x00020, 163 .sense_uproc_interrupt_reg32 = 0x00024, 164 .set_uproc_interrupt_reg = 0x00020, 165 .set_uproc_interrupt_reg32 = 0x00024, 166 .clr_uproc_interrupt_reg = 0x00028, 167 .clr_uproc_interrupt_reg32 = 0x0002C, 168 .init_feedback_reg = 0x0005C, 169 .dump_addr_reg = 0x00064, 170 .dump_data_reg = 0x00068 171 } 172 }, 173}; 174 175static const struct ipr_chip_t ipr_chip[] = { 176 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[0] }, 177 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[0] }, 178 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[0] }, 179 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[0] }, 180 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, &ipr_chip_cfg[0] }, 181 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[1] }, 182 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[1] }, 183 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, &ipr_chip_cfg[2] }, 184 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, IPR_USE_MSI, IPR_SIS64, &ipr_chip_cfg[2] } 185}; 186 187static int ipr_max_bus_speeds [] = { 188 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE 189}; 190 191MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); 192MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); 193module_param_named(max_speed, ipr_max_speed, uint, 0); 194MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); 195module_param_named(log_level, ipr_log_level, uint, 0); 196MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); 197module_param_named(testmode, ipr_testmode, int, 0); 198MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); 199module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR); 200MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); 201module_param_named(transop_timeout, ipr_transop_timeout, int, 0); 202MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); 203module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR); 204MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)"); 205module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0); 206MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)"); 207module_param_named(max_devs, ipr_max_devs, int, 0); 208MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. " 209 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]"); 210MODULE_LICENSE("GPL"); 211MODULE_VERSION(IPR_DRIVER_VERSION); 212 213/* A constant array of IOASCs/URCs/Error Messages */ 214static const 215struct ipr_error_table_t ipr_error_table[] = { 216 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL, 217 "8155: An unknown error was received"}, 218 {0x00330000, 0, 0, 219 "Soft underlength error"}, 220 {0x005A0000, 0, 0, 221 "Command to be cancelled not found"}, 222 {0x00808000, 0, 0, 223 "Qualified success"}, 224 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL, 225 "FFFE: Soft device bus error recovered by the IOA"}, 226 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL, 227 "4101: Soft device bus fabric error"}, 228 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL, 229 "FFFC: Logical block guard error recovered by the device"}, 230 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL, 231 "FFFC: Logical block reference tag error recovered by the device"}, 232 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL, 233 "4171: Recovered scatter list tag / sequence number error"}, 234 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL, 235 "FF3D: Recovered logical block CRC error on IOA to Host transfer"}, 236 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL, 237 "4171: Recovered logical block sequence number error on IOA to Host transfer"}, 238 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL, 239 "FFFD: Recovered logical block reference tag error detected by the IOA"}, 240 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL, 241 "FFFD: Logical block guard error recovered by the IOA"}, 242 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL, 243 "FFF9: Device sector reassign successful"}, 244 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL, 245 "FFF7: Media error recovered by device rewrite procedures"}, 246 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL, 247 "7001: IOA sector reassignment successful"}, 248 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL, 249 "FFF9: Soft media error. Sector reassignment recommended"}, 250 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL, 251 "FFF7: Media error recovered by IOA rewrite procedures"}, 252 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL, 253 "FF3D: Soft PCI bus error recovered by the IOA"}, 254 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL, 255 "FFF6: Device hardware error recovered by the IOA"}, 256 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL, 257 "FFF6: Device hardware error recovered by the device"}, 258 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL, 259 "FF3D: Soft IOA error recovered by the IOA"}, 260 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL, 261 "FFFA: Undefined device response recovered by the IOA"}, 262 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL, 263 "FFF6: Device bus error, message or command phase"}, 264 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL, 265 "FFFE: Task Management Function failed"}, 266 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL, 267 "FFF6: Failure prediction threshold exceeded"}, 268 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL, 269 "8009: Impending cache battery pack failure"}, 270 {0x02040400, 0, 0, 271 "34FF: Disk device format in progress"}, 272 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL, 273 "9070: IOA requested reset"}, 274 {0x023F0000, 0, 0, 275 "Synchronization required"}, 276 {0x024E0000, 0, 0, 277 "No ready, IOA shutdown"}, 278 {0x025A0000, 0, 0, 279 "Not ready, IOA has been shutdown"}, 280 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL, 281 "3020: Storage subsystem configuration error"}, 282 {0x03110B00, 0, 0, 283 "FFF5: Medium error, data unreadable, recommend reassign"}, 284 {0x03110C00, 0, 0, 285 "7000: Medium error, data unreadable, do not reassign"}, 286 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL, 287 "FFF3: Disk media format bad"}, 288 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL, 289 "3002: Addressed device failed to respond to selection"}, 290 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL, 291 "3100: Device bus error"}, 292 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL, 293 "3109: IOA timed out a device command"}, 294 {0x04088000, 0, 0, 295 "3120: SCSI bus is not operational"}, 296 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL, 297 "4100: Hard device bus fabric error"}, 298 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL, 299 "310C: Logical block guard error detected by the device"}, 300 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL, 301 "310C: Logical block reference tag error detected by the device"}, 302 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL, 303 "4170: Scatter list tag / sequence number error"}, 304 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL, 305 "8150: Logical block CRC error on IOA to Host transfer"}, 306 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL, 307 "4170: Logical block sequence number error on IOA to Host transfer"}, 308 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL, 309 "310D: Logical block reference tag error detected by the IOA"}, 310 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL, 311 "310D: Logical block guard error detected by the IOA"}, 312 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL, 313 "9000: IOA reserved area data check"}, 314 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL, 315 "9001: IOA reserved area invalid data pattern"}, 316 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL, 317 "9002: IOA reserved area LRC error"}, 318 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL, 319 "Hardware Error, IOA metadata access error"}, 320 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL, 321 "102E: Out of alternate sectors for disk storage"}, 322 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL, 323 "FFF4: Data transfer underlength error"}, 324 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL, 325 "FFF4: Data transfer overlength error"}, 326 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL, 327 "3400: Logical unit failure"}, 328 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL, 329 "FFF4: Device microcode is corrupt"}, 330 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL, 331 "8150: PCI bus error"}, 332 {0x04430000, 1, 0, 333 "Unsupported device bus message received"}, 334 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL, 335 "FFF4: Disk device problem"}, 336 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL, 337 "8150: Permanent IOA failure"}, 338 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL, 339 "3010: Disk device returned wrong response to IOA"}, 340 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL, 341 "8151: IOA microcode error"}, 342 {0x04448500, 0, 0, 343 "Device bus status error"}, 344 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL, 345 "8157: IOA error requiring IOA reset to recover"}, 346 {0x04448700, 0, 0, 347 "ATA device status error"}, 348 {0x04490000, 0, 0, 349 "Message reject received from the device"}, 350 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL, 351 "8008: A permanent cache battery pack failure occurred"}, 352 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL, 353 "9090: Disk unit has been modified after the last known status"}, 354 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL, 355 "9081: IOA detected device error"}, 356 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL, 357 "9082: IOA detected device error"}, 358 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL, 359 "3110: Device bus error, message or command phase"}, 360 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL, 361 "3110: SAS Command / Task Management Function failed"}, 362 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL, 363 "9091: Incorrect hardware configuration change has been detected"}, 364 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL, 365 "9073: Invalid multi-adapter configuration"}, 366 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL, 367 "4010: Incorrect connection between cascaded expanders"}, 368 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL, 369 "4020: Connections exceed IOA design limits"}, 370 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL, 371 "4030: Incorrect multipath connection"}, 372 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL, 373 "4110: Unsupported enclosure function"}, 374 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL, 375 "FFF4: Command to logical unit failed"}, 376 {0x05240000, 1, 0, 377 "Illegal request, invalid request type or request packet"}, 378 {0x05250000, 0, 0, 379 "Illegal request, invalid resource handle"}, 380 {0x05258000, 0, 0, 381 "Illegal request, commands not allowed to this device"}, 382 {0x05258100, 0, 0, 383 "Illegal request, command not allowed to a secondary adapter"}, 384 {0x05258200, 0, 0, 385 "Illegal request, command not allowed to a non-optimized resource"}, 386 {0x05260000, 0, 0, 387 "Illegal request, invalid field in parameter list"}, 388 {0x05260100, 0, 0, 389 "Illegal request, parameter not supported"}, 390 {0x05260200, 0, 0, 391 "Illegal request, parameter value invalid"}, 392 {0x052C0000, 0, 0, 393 "Illegal request, command sequence error"}, 394 {0x052C8000, 1, 0, 395 "Illegal request, dual adapter support not enabled"}, 396 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL, 397 "9031: Array protection temporarily suspended, protection resuming"}, 398 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL, 399 "9040: Array protection temporarily suspended, protection resuming"}, 400 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL, 401 "3140: Device bus not ready to ready transition"}, 402 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL, 403 "FFFB: SCSI bus was reset"}, 404 {0x06290500, 0, 0, 405 "FFFE: SCSI bus transition to single ended"}, 406 {0x06290600, 0, 0, 407 "FFFE: SCSI bus transition to LVD"}, 408 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL, 409 "FFFB: SCSI bus was reset by another initiator"}, 410 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL, 411 "3029: A device replacement has occurred"}, 412 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL, 413 "9051: IOA cache data exists for a missing or failed device"}, 414 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL, 415 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"}, 416 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL, 417 "9025: Disk unit is not supported at its physical location"}, 418 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL, 419 "3020: IOA detected a SCSI bus configuration error"}, 420 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL, 421 "3150: SCSI bus configuration error"}, 422 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL, 423 "9074: Asymmetric advanced function disk configuration"}, 424 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL, 425 "4040: Incomplete multipath connection between IOA and enclosure"}, 426 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL, 427 "4041: Incomplete multipath connection between enclosure and device"}, 428 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL, 429 "9075: Incomplete multipath connection between IOA and remote IOA"}, 430 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL, 431 "9076: Configuration error, missing remote IOA"}, 432 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL, 433 "4050: Enclosure does not support a required multipath function"}, 434 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL, 435 "4070: Logically bad block written on device"}, 436 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL, 437 "9041: Array protection temporarily suspended"}, 438 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL, 439 "9042: Corrupt array parity detected on specified device"}, 440 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL, 441 "9030: Array no longer protected due to missing or failed disk unit"}, 442 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL, 443 "9071: Link operational transition"}, 444 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL, 445 "9072: Link not operational transition"}, 446 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL, 447 "9032: Array exposed but still protected"}, 448 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1, 449 "70DD: Device forced failed by disrupt device command"}, 450 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL, 451 "4061: Multipath redundancy level got better"}, 452 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL, 453 "4060: Multipath redundancy level got worse"}, 454 {0x07270000, 0, 0, 455 "Failure due to other device"}, 456 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL, 457 "9008: IOA does not support functions expected by devices"}, 458 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL, 459 "9010: Cache data associated with attached devices cannot be found"}, 460 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL, 461 "9011: Cache data belongs to devices other than those attached"}, 462 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL, 463 "9020: Array missing 2 or more devices with only 1 device present"}, 464 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL, 465 "9021: Array missing 2 or more devices with 2 or more devices present"}, 466 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL, 467 "9022: Exposed array is missing a required device"}, 468 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL, 469 "9023: Array member(s) not at required physical locations"}, 470 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL, 471 "9024: Array not functional due to present hardware configuration"}, 472 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL, 473 "9026: Array not functional due to present hardware configuration"}, 474 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL, 475 "9027: Array is missing a device and parity is out of sync"}, 476 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL, 477 "9028: Maximum number of arrays already exist"}, 478 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL, 479 "9050: Required cache data cannot be located for a disk unit"}, 480 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL, 481 "9052: Cache data exists for a device that has been modified"}, 482 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL, 483 "9054: IOA resources not available due to previous problems"}, 484 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL, 485 "9092: Disk unit requires initialization before use"}, 486 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL, 487 "9029: Incorrect hardware configuration change has been detected"}, 488 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL, 489 "9060: One or more disk pairs are missing from an array"}, 490 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL, 491 "9061: One or more disks are missing from an array"}, 492 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL, 493 "9062: One or more disks are missing from an array"}, 494 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL, 495 "9063: Maximum number of functional arrays has been exceeded"}, 496 {0x0B260000, 0, 0, 497 "Aborted command, invalid descriptor"}, 498 {0x0B5A0000, 0, 0, 499 "Command terminated by host"} 500}; 501 502static const struct ipr_ses_table_entry ipr_ses_table[] = { 503 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, 504 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, 505 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ 506 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ 507 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ 508 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ 509 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, 510 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, 511 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 512 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 513 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, 514 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, 515 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } 516}; 517 518/* 519 * Function Prototypes 520 */ 521static int ipr_reset_alert(struct ipr_cmnd *); 522static void ipr_process_ccn(struct ipr_cmnd *); 523static void ipr_process_error(struct ipr_cmnd *); 524static void ipr_reset_ioa_job(struct ipr_cmnd *); 525static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, 526 enum ipr_shutdown_type); 527 528#ifdef CONFIG_SCSI_IPR_TRACE 529/** 530 * ipr_trc_hook - Add a trace entry to the driver trace 531 * @ipr_cmd: ipr command struct 532 * @type: trace type 533 * @add_data: additional data 534 * 535 * Return value: 536 * none 537 **/ 538static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, 539 u8 type, u32 add_data) 540{ 541 struct ipr_trace_entry *trace_entry; 542 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 543 544 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++]; 545 trace_entry->time = jiffies; 546 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; 547 trace_entry->type = type; 548 if (ipr_cmd->ioa_cfg->sis64) 549 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command; 550 else 551 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command; 552 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff; 553 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; 554 trace_entry->u.add_data = add_data; 555} 556#else 557#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0) 558#endif 559 560/** 561 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse 562 * @ipr_cmd: ipr command struct 563 * 564 * Return value: 565 * none 566 **/ 567static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 568{ 569 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 570 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 571 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64; 572 dma_addr_t dma_addr = ipr_cmd->dma_addr; 573 574 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 575 ioarcb->data_transfer_length = 0; 576 ioarcb->read_data_transfer_length = 0; 577 ioarcb->ioadl_len = 0; 578 ioarcb->read_ioadl_len = 0; 579 580 if (ipr_cmd->ioa_cfg->sis64) { 581 ioarcb->u.sis64_addr_data.data_ioadl_addr = 582 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 583 ioasa64->u.gata.status = 0; 584 } else { 585 ioarcb->write_ioadl_addr = 586 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 587 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 588 ioasa->u.gata.status = 0; 589 } 590 591 ioasa->hdr.ioasc = 0; 592 ioasa->hdr.residual_data_len = 0; 593 ipr_cmd->scsi_cmd = NULL; 594 ipr_cmd->qc = NULL; 595 ipr_cmd->sense_buffer[0] = 0; 596 ipr_cmd->dma_use_sg = 0; 597} 598 599/** 600 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block 601 * @ipr_cmd: ipr command struct 602 * 603 * Return value: 604 * none 605 **/ 606static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 607{ 608 ipr_reinit_ipr_cmnd(ipr_cmd); 609 ipr_cmd->u.scratch = 0; 610 ipr_cmd->sibling = NULL; 611 init_timer(&ipr_cmd->timer); 612} 613 614/** 615 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block 616 * @ioa_cfg: ioa config struct 617 * 618 * Return value: 619 * pointer to ipr command struct 620 **/ 621static 622struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) 623{ 624 struct ipr_cmnd *ipr_cmd; 625 626 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue); 627 list_del(&ipr_cmd->queue); 628 ipr_init_ipr_cmnd(ipr_cmd); 629 630 return ipr_cmd; 631} 632 633/** 634 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts 635 * @ioa_cfg: ioa config struct 636 * @clr_ints: interrupts to clear 637 * 638 * This function masks all interrupts on the adapter, then clears the 639 * interrupts specified in the mask 640 * 641 * Return value: 642 * none 643 **/ 644static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, 645 u32 clr_ints) 646{ 647 volatile u32 int_reg; 648 649 /* Stop new interrupts */ 650 ioa_cfg->allow_interrupts = 0; 651 652 /* Set interrupt mask to stop all new interrupts */ 653 if (ioa_cfg->sis64) 654 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg); 655 else 656 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); 657 658 /* Clear any pending interrupts */ 659 if (ioa_cfg->sis64) 660 writel(~0, ioa_cfg->regs.clr_interrupt_reg); 661 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32); 662 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 663} 664 665/** 666 * ipr_save_pcix_cmd_reg - Save PCI-X command register 667 * @ioa_cfg: ioa config struct 668 * 669 * Return value: 670 * 0 on success / -EIO on failure 671 **/ 672static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 673{ 674 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 675 676 if (pcix_cmd_reg == 0) 677 return 0; 678 679 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 680 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 681 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 682 return -EIO; 683 } 684 685 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; 686 return 0; 687} 688 689/** 690 * ipr_set_pcix_cmd_reg - Setup PCI-X command register 691 * @ioa_cfg: ioa config struct 692 * 693 * Return value: 694 * 0 on success / -EIO on failure 695 **/ 696static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 697{ 698 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 699 700 if (pcix_cmd_reg) { 701 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 702 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 703 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); 704 return -EIO; 705 } 706 } 707 708 return 0; 709} 710 711/** 712 * ipr_sata_eh_done - done function for aborted SATA commands 713 * @ipr_cmd: ipr command struct 714 * 715 * This function is invoked for ops generated to SATA 716 * devices which are being aborted. 717 * 718 * Return value: 719 * none 720 **/ 721static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd) 722{ 723 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 724 struct ata_queued_cmd *qc = ipr_cmd->qc; 725 struct ipr_sata_port *sata_port = qc->ap->private_data; 726 727 qc->err_mask |= AC_ERR_OTHER; 728 sata_port->ioasa.status |= ATA_BUSY; 729 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 730 ata_qc_complete(qc); 731} 732 733/** 734 * ipr_scsi_eh_done - mid-layer done function for aborted ops 735 * @ipr_cmd: ipr command struct 736 * 737 * This function is invoked by the interrupt handler for 738 * ops generated by the SCSI mid-layer which are being aborted. 739 * 740 * Return value: 741 * none 742 **/ 743static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 744{ 745 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 746 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 747 748 scsi_cmd->result |= (DID_ERROR << 16); 749 750 scsi_dma_unmap(ipr_cmd->scsi_cmd); 751 scsi_cmd->scsi_done(scsi_cmd); 752 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 753} 754 755/** 756 * ipr_fail_all_ops - Fails all outstanding ops. 757 * @ioa_cfg: ioa config struct 758 * 759 * This function fails all outstanding ops. 760 * 761 * Return value: 762 * none 763 **/ 764static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) 765{ 766 struct ipr_cmnd *ipr_cmd, *temp; 767 768 ENTER; 769 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) { 770 list_del(&ipr_cmd->queue); 771 772 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); 773 ipr_cmd->s.ioasa.hdr.ilid = cpu_to_be32(IPR_DRIVER_ILID); 774 775 if (ipr_cmd->scsi_cmd) 776 ipr_cmd->done = ipr_scsi_eh_done; 777 else if (ipr_cmd->qc) 778 ipr_cmd->done = ipr_sata_eh_done; 779 780 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET); 781 del_timer(&ipr_cmd->timer); 782 ipr_cmd->done(ipr_cmd); 783 } 784 785 LEAVE; 786} 787 788/** 789 * ipr_send_command - Send driver initiated requests. 790 * @ipr_cmd: ipr command struct 791 * 792 * This function sends a command to the adapter using the correct write call. 793 * In the case of sis64, calculate the ioarcb size required. Then or in the 794 * appropriate bits. 795 * 796 * Return value: 797 * none 798 **/ 799static void ipr_send_command(struct ipr_cmnd *ipr_cmd) 800{ 801 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 802 dma_addr_t send_dma_addr = ipr_cmd->dma_addr; 803 804 if (ioa_cfg->sis64) { 805 /* The default size is 256 bytes */ 806 send_dma_addr |= 0x1; 807 808 /* If the number of ioadls * size of ioadl > 128 bytes, 809 then use a 512 byte ioarcb */ 810 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 ) 811 send_dma_addr |= 0x4; 812 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg); 813 } else 814 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg); 815} 816 817/** 818 * ipr_do_req - Send driver initiated requests. 819 * @ipr_cmd: ipr command struct 820 * @done: done function 821 * @timeout_func: timeout function 822 * @timeout: timeout value 823 * 824 * This function sends the specified command to the adapter with the 825 * timeout given. The done function is invoked on command completion. 826 * 827 * Return value: 828 * none 829 **/ 830static void ipr_do_req(struct ipr_cmnd *ipr_cmd, 831 void (*done) (struct ipr_cmnd *), 832 void (*timeout_func) (struct ipr_cmnd *), u32 timeout) 833{ 834 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 835 836 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 837 838 ipr_cmd->done = done; 839 840 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 841 ipr_cmd->timer.expires = jiffies + timeout; 842 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func; 843 844 add_timer(&ipr_cmd->timer); 845 846 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); 847 848 mb(); 849 850 ipr_send_command(ipr_cmd); 851} 852 853/** 854 * ipr_internal_cmd_done - Op done function for an internally generated op. 855 * @ipr_cmd: ipr command struct 856 * 857 * This function is the op done function for an internally generated, 858 * blocking op. It simply wakes the sleeping thread. 859 * 860 * Return value: 861 * none 862 **/ 863static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) 864{ 865 if (ipr_cmd->sibling) 866 ipr_cmd->sibling = NULL; 867 else 868 complete(&ipr_cmd->completion); 869} 870 871/** 872 * ipr_init_ioadl - initialize the ioadl for the correct SIS type 873 * @ipr_cmd: ipr command struct 874 * @dma_addr: dma address 875 * @len: transfer length 876 * @flags: ioadl flag value 877 * 878 * This function initializes an ioadl in the case where there is only a single 879 * descriptor. 880 * 881 * Return value: 882 * nothing 883 **/ 884static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr, 885 u32 len, int flags) 886{ 887 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 888 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 889 890 ipr_cmd->dma_use_sg = 1; 891 892 if (ipr_cmd->ioa_cfg->sis64) { 893 ioadl64->flags = cpu_to_be32(flags); 894 ioadl64->data_len = cpu_to_be32(len); 895 ioadl64->address = cpu_to_be64(dma_addr); 896 897 ipr_cmd->ioarcb.ioadl_len = 898 cpu_to_be32(sizeof(struct ipr_ioadl64_desc)); 899 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len); 900 } else { 901 ioadl->flags_and_data_len = cpu_to_be32(flags | len); 902 ioadl->address = cpu_to_be32(dma_addr); 903 904 if (flags == IPR_IOADL_FLAGS_READ_LAST) { 905 ipr_cmd->ioarcb.read_ioadl_len = 906 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 907 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len); 908 } else { 909 ipr_cmd->ioarcb.ioadl_len = 910 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 911 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len); 912 } 913 } 914} 915 916/** 917 * ipr_send_blocking_cmd - Send command and sleep on its completion. 918 * @ipr_cmd: ipr command struct 919 * @timeout_func: function to invoke if command times out 920 * @timeout: timeout 921 * 922 * Return value: 923 * none 924 **/ 925static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, 926 void (*timeout_func) (struct ipr_cmnd *ipr_cmd), 927 u32 timeout) 928{ 929 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 930 931 init_completion(&ipr_cmd->completion); 932 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); 933 934 spin_unlock_irq(ioa_cfg->host->host_lock); 935 wait_for_completion(&ipr_cmd->completion); 936 spin_lock_irq(ioa_cfg->host->host_lock); 937} 938 939/** 940 * ipr_send_hcam - Send an HCAM to the adapter. 941 * @ioa_cfg: ioa config struct 942 * @type: HCAM type 943 * @hostrcb: hostrcb struct 944 * 945 * This function will send a Host Controlled Async command to the adapter. 946 * If HCAMs are currently not allowed to be issued to the adapter, it will 947 * place the hostrcb on the free queue. 948 * 949 * Return value: 950 * none 951 **/ 952static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, 953 struct ipr_hostrcb *hostrcb) 954{ 955 struct ipr_cmnd *ipr_cmd; 956 struct ipr_ioarcb *ioarcb; 957 958 if (ioa_cfg->allow_cmds) { 959 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 960 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 961 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); 962 963 ipr_cmd->u.hostrcb = hostrcb; 964 ioarcb = &ipr_cmd->ioarcb; 965 966 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 967 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; 968 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; 969 ioarcb->cmd_pkt.cdb[1] = type; 970 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; 971 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; 972 973 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma, 974 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST); 975 976 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) 977 ipr_cmd->done = ipr_process_ccn; 978 else 979 ipr_cmd->done = ipr_process_error; 980 981 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); 982 983 mb(); 984 985 ipr_send_command(ipr_cmd); 986 } else { 987 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 988 } 989} 990 991/** 992 * ipr_update_ata_class - Update the ata class in the resource entry 993 * @res: resource entry struct 994 * @proto: cfgte device bus protocol value 995 * 996 * Return value: 997 * none 998 **/ 999static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto) 1000{ 1001 switch(proto) { 1002 case IPR_PROTO_SATA: 1003 case IPR_PROTO_SAS_STP: 1004 res->ata_class = ATA_DEV_ATA; 1005 break; 1006 case IPR_PROTO_SATA_ATAPI: 1007 case IPR_PROTO_SAS_STP_ATAPI: 1008 res->ata_class = ATA_DEV_ATAPI; 1009 break; 1010 default: 1011 res->ata_class = ATA_DEV_UNKNOWN; 1012 break; 1013 }; 1014} 1015 1016/** 1017 * ipr_init_res_entry - Initialize a resource entry struct. 1018 * @res: resource entry struct 1019 * @cfgtew: config table entry wrapper struct 1020 * 1021 * Return value: 1022 * none 1023 **/ 1024static void ipr_init_res_entry(struct ipr_resource_entry *res, 1025 struct ipr_config_table_entry_wrapper *cfgtew) 1026{ 1027 int found = 0; 1028 unsigned int proto; 1029 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg; 1030 struct ipr_resource_entry *gscsi_res = NULL; 1031 1032 res->needs_sync_complete = 0; 1033 res->in_erp = 0; 1034 res->add_to_ml = 0; 1035 res->del_from_ml = 0; 1036 res->resetting_device = 0; 1037 res->sdev = NULL; 1038 res->sata_port = NULL; 1039 1040 if (ioa_cfg->sis64) { 1041 proto = cfgtew->u.cfgte64->proto; 1042 res->res_flags = cfgtew->u.cfgte64->res_flags; 1043 res->qmodel = IPR_QUEUEING_MODEL64(res); 1044 res->type = cfgtew->u.cfgte64->res_type; 1045 1046 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path, 1047 sizeof(res->res_path)); 1048 1049 res->bus = 0; 1050 res->lun = scsilun_to_int(&res->dev_lun); 1051 1052 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) { 1053 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) { 1054 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) { 1055 found = 1; 1056 res->target = gscsi_res->target; 1057 break; 1058 } 1059 } 1060 if (!found) { 1061 res->target = find_first_zero_bit(ioa_cfg->target_ids, 1062 ioa_cfg->max_devs_supported); 1063 set_bit(res->target, ioa_cfg->target_ids); 1064 } 1065 1066 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1067 sizeof(res->dev_lun.scsi_lun)); 1068 } else if (res->type == IPR_RES_TYPE_IOAFP) { 1069 res->bus = IPR_IOAFP_VIRTUAL_BUS; 1070 res->target = 0; 1071 } else if (res->type == IPR_RES_TYPE_ARRAY) { 1072 res->bus = IPR_ARRAY_VIRTUAL_BUS; 1073 res->target = find_first_zero_bit(ioa_cfg->array_ids, 1074 ioa_cfg->max_devs_supported); 1075 set_bit(res->target, ioa_cfg->array_ids); 1076 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) { 1077 res->bus = IPR_VSET_VIRTUAL_BUS; 1078 res->target = find_first_zero_bit(ioa_cfg->vset_ids, 1079 ioa_cfg->max_devs_supported); 1080 set_bit(res->target, ioa_cfg->vset_ids); 1081 } else { 1082 res->target = find_first_zero_bit(ioa_cfg->target_ids, 1083 ioa_cfg->max_devs_supported); 1084 set_bit(res->target, ioa_cfg->target_ids); 1085 } 1086 } else { 1087 proto = cfgtew->u.cfgte->proto; 1088 res->qmodel = IPR_QUEUEING_MODEL(res); 1089 res->flags = cfgtew->u.cfgte->flags; 1090 if (res->flags & IPR_IS_IOA_RESOURCE) 1091 res->type = IPR_RES_TYPE_IOAFP; 1092 else 1093 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f; 1094 1095 res->bus = cfgtew->u.cfgte->res_addr.bus; 1096 res->target = cfgtew->u.cfgte->res_addr.target; 1097 res->lun = cfgtew->u.cfgte->res_addr.lun; 1098 } 1099 1100 ipr_update_ata_class(res, proto); 1101} 1102 1103/** 1104 * ipr_is_same_device - Determine if two devices are the same. 1105 * @res: resource entry struct 1106 * @cfgtew: config table entry wrapper struct 1107 * 1108 * Return value: 1109 * 1 if the devices are the same / 0 otherwise 1110 **/ 1111static int ipr_is_same_device(struct ipr_resource_entry *res, 1112 struct ipr_config_table_entry_wrapper *cfgtew) 1113{ 1114 if (res->ioa_cfg->sis64) { 1115 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id, 1116 sizeof(cfgtew->u.cfgte64->dev_id)) && 1117 !memcmp(&res->lun, &cfgtew->u.cfgte64->lun, 1118 sizeof(cfgtew->u.cfgte64->lun))) { 1119 return 1; 1120 } 1121 } else { 1122 if (res->bus == cfgtew->u.cfgte->res_addr.bus && 1123 res->target == cfgtew->u.cfgte->res_addr.target && 1124 res->lun == cfgtew->u.cfgte->res_addr.lun) 1125 return 1; 1126 } 1127 1128 return 0; 1129} 1130 1131/** 1132 * ipr_format_resource_path - Format the resource path for printing. 1133 * @res_path: resource path 1134 * @buf: buffer 1135 * 1136 * Return value: 1137 * pointer to buffer 1138 **/ 1139static char *ipr_format_resource_path(u8 *res_path, char *buffer) 1140{ 1141 int i; 1142 1143 sprintf(buffer, "%02X", res_path[0]); 1144 for (i=1; res_path[i] != 0xff; i++) 1145 sprintf(buffer, "%s-%02X", buffer, res_path[i]); 1146 1147 return buffer; 1148} 1149 1150/** 1151 * ipr_update_res_entry - Update the resource entry. 1152 * @res: resource entry struct 1153 * @cfgtew: config table entry wrapper struct 1154 * 1155 * Return value: 1156 * none 1157 **/ 1158static void ipr_update_res_entry(struct ipr_resource_entry *res, 1159 struct ipr_config_table_entry_wrapper *cfgtew) 1160{ 1161 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1162 unsigned int proto; 1163 int new_path = 0; 1164 1165 if (res->ioa_cfg->sis64) { 1166 res->flags = cfgtew->u.cfgte64->flags; 1167 res->res_flags = cfgtew->u.cfgte64->res_flags; 1168 res->type = cfgtew->u.cfgte64->res_type & 0x0f; 1169 1170 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data, 1171 sizeof(struct ipr_std_inq_data)); 1172 1173 res->qmodel = IPR_QUEUEING_MODEL64(res); 1174 proto = cfgtew->u.cfgte64->proto; 1175 res->res_handle = cfgtew->u.cfgte64->res_handle; 1176 res->dev_id = cfgtew->u.cfgte64->dev_id; 1177 1178 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1179 sizeof(res->dev_lun.scsi_lun)); 1180 1181 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path, 1182 sizeof(res->res_path))) { 1183 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path, 1184 sizeof(res->res_path)); 1185 new_path = 1; 1186 } 1187 1188 if (res->sdev && new_path) 1189 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n", 1190 ipr_format_resource_path(&res->res_path[0], &buffer[0])); 1191 } else { 1192 res->flags = cfgtew->u.cfgte->flags; 1193 if (res->flags & IPR_IS_IOA_RESOURCE) 1194 res->type = IPR_RES_TYPE_IOAFP; 1195 else 1196 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f; 1197 1198 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data, 1199 sizeof(struct ipr_std_inq_data)); 1200 1201 res->qmodel = IPR_QUEUEING_MODEL(res); 1202 proto = cfgtew->u.cfgte->proto; 1203 res->res_handle = cfgtew->u.cfgte->res_handle; 1204 } 1205 1206 ipr_update_ata_class(res, proto); 1207} 1208 1209/** 1210 * ipr_clear_res_target - Clear the bit in the bit map representing the target 1211 * for the resource. 1212 * @res: resource entry struct 1213 * @cfgtew: config table entry wrapper struct 1214 * 1215 * Return value: 1216 * none 1217 **/ 1218static void ipr_clear_res_target(struct ipr_resource_entry *res) 1219{ 1220 struct ipr_resource_entry *gscsi_res = NULL; 1221 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg; 1222 1223 if (!ioa_cfg->sis64) 1224 return; 1225 1226 if (res->bus == IPR_ARRAY_VIRTUAL_BUS) 1227 clear_bit(res->target, ioa_cfg->array_ids); 1228 else if (res->bus == IPR_VSET_VIRTUAL_BUS) 1229 clear_bit(res->target, ioa_cfg->vset_ids); 1230 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) { 1231 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) 1232 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res) 1233 return; 1234 clear_bit(res->target, ioa_cfg->target_ids); 1235 1236 } else if (res->bus == 0) 1237 clear_bit(res->target, ioa_cfg->target_ids); 1238} 1239 1240/** 1241 * ipr_handle_config_change - Handle a config change from the adapter 1242 * @ioa_cfg: ioa config struct 1243 * @hostrcb: hostrcb 1244 * 1245 * Return value: 1246 * none 1247 **/ 1248static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, 1249 struct ipr_hostrcb *hostrcb) 1250{ 1251 struct ipr_resource_entry *res = NULL; 1252 struct ipr_config_table_entry_wrapper cfgtew; 1253 __be32 cc_res_handle; 1254 1255 u32 is_ndn = 1; 1256 1257 if (ioa_cfg->sis64) { 1258 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64; 1259 cc_res_handle = cfgtew.u.cfgte64->res_handle; 1260 } else { 1261 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte; 1262 cc_res_handle = cfgtew.u.cfgte->res_handle; 1263 } 1264 1265 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1266 if (res->res_handle == cc_res_handle) { 1267 is_ndn = 0; 1268 break; 1269 } 1270 } 1271 1272 if (is_ndn) { 1273 if (list_empty(&ioa_cfg->free_res_q)) { 1274 ipr_send_hcam(ioa_cfg, 1275 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 1276 hostrcb); 1277 return; 1278 } 1279 1280 res = list_entry(ioa_cfg->free_res_q.next, 1281 struct ipr_resource_entry, queue); 1282 1283 list_del(&res->queue); 1284 ipr_init_res_entry(res, &cfgtew); 1285 list_add_tail(&res->queue, &ioa_cfg->used_res_q); 1286 } 1287 1288 ipr_update_res_entry(res, &cfgtew); 1289 1290 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { 1291 if (res->sdev) { 1292 res->del_from_ml = 1; 1293 res->res_handle = IPR_INVALID_RES_HANDLE; 1294 if (ioa_cfg->allow_ml_add_del) 1295 schedule_work(&ioa_cfg->work_q); 1296 } else { 1297 ipr_clear_res_target(res); 1298 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 1299 } 1300 } else if (!res->sdev) { 1301 res->add_to_ml = 1; 1302 if (ioa_cfg->allow_ml_add_del) 1303 schedule_work(&ioa_cfg->work_q); 1304 } 1305 1306 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 1307} 1308 1309/** 1310 * ipr_process_ccn - Op done function for a CCN. 1311 * @ipr_cmd: ipr command struct 1312 * 1313 * This function is the op done function for a configuration 1314 * change notification host controlled async from the adapter. 1315 * 1316 * Return value: 1317 * none 1318 **/ 1319static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) 1320{ 1321 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1322 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 1323 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 1324 1325 list_del(&hostrcb->queue); 1326 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 1327 1328 if (ioasc) { 1329 if (ioasc != IPR_IOASC_IOA_WAS_RESET) 1330 dev_err(&ioa_cfg->pdev->dev, 1331 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 1332 1333 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 1334 } else { 1335 ipr_handle_config_change(ioa_cfg, hostrcb); 1336 } 1337} 1338 1339/** 1340 * strip_and_pad_whitespace - Strip and pad trailing whitespace. 1341 * @i: index into buffer 1342 * @buf: string to modify 1343 * 1344 * This function will strip all trailing whitespace, pad the end 1345 * of the string with a single space, and NULL terminate the string. 1346 * 1347 * Return value: 1348 * new length of string 1349 **/ 1350static int strip_and_pad_whitespace(int i, char *buf) 1351{ 1352 while (i && buf[i] == ' ') 1353 i--; 1354 buf[i+1] = ' '; 1355 buf[i+2] = '\0'; 1356 return i + 2; 1357} 1358 1359/** 1360 * ipr_log_vpd_compact - Log the passed extended VPD compactly. 1361 * @prefix: string to print at start of printk 1362 * @hostrcb: hostrcb pointer 1363 * @vpd: vendor/product id/sn struct 1364 * 1365 * Return value: 1366 * none 1367 **/ 1368static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 1369 struct ipr_vpd *vpd) 1370{ 1371 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3]; 1372 int i = 0; 1373 1374 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 1375 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer); 1376 1377 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN); 1378 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer); 1379 1380 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN); 1381 buffer[IPR_SERIAL_NUM_LEN + i] = '\0'; 1382 1383 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer); 1384} 1385 1386/** 1387 * ipr_log_vpd - Log the passed VPD to the error log. 1388 * @vpd: vendor/product id/sn struct 1389 * 1390 * Return value: 1391 * none 1392 **/ 1393static void ipr_log_vpd(struct ipr_vpd *vpd) 1394{ 1395 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN 1396 + IPR_SERIAL_NUM_LEN]; 1397 1398 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 1399 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id, 1400 IPR_PROD_ID_LEN); 1401 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; 1402 ipr_err("Vendor/Product ID: %s\n", buffer); 1403 1404 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN); 1405 buffer[IPR_SERIAL_NUM_LEN] = '\0'; 1406 ipr_err(" Serial Number: %s\n", buffer); 1407} 1408 1409/** 1410 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly. 1411 * @prefix: string to print at start of printk 1412 * @hostrcb: hostrcb pointer 1413 * @vpd: vendor/product id/sn/wwn struct 1414 * 1415 * Return value: 1416 * none 1417 **/ 1418static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 1419 struct ipr_ext_vpd *vpd) 1420{ 1421 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd); 1422 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix, 1423 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1])); 1424} 1425 1426/** 1427 * ipr_log_ext_vpd - Log the passed extended VPD to the error log. 1428 * @vpd: vendor/product id/sn/wwn struct 1429 * 1430 * Return value: 1431 * none 1432 **/ 1433static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd) 1434{ 1435 ipr_log_vpd(&vpd->vpd); 1436 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]), 1437 be32_to_cpu(vpd->wwid[1])); 1438} 1439 1440/** 1441 * ipr_log_enhanced_cache_error - Log a cache error. 1442 * @ioa_cfg: ioa config struct 1443 * @hostrcb: hostrcb struct 1444 * 1445 * Return value: 1446 * none 1447 **/ 1448static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1449 struct ipr_hostrcb *hostrcb) 1450{ 1451 struct ipr_hostrcb_type_12_error *error; 1452 1453 if (ioa_cfg->sis64) 1454 error = &hostrcb->hcam.u.error64.u.type_12_error; 1455 else 1456 error = &hostrcb->hcam.u.error.u.type_12_error; 1457 1458 ipr_err("-----Current Configuration-----\n"); 1459 ipr_err("Cache Directory Card Information:\n"); 1460 ipr_log_ext_vpd(&error->ioa_vpd); 1461 ipr_err("Adapter Card Information:\n"); 1462 ipr_log_ext_vpd(&error->cfc_vpd); 1463 1464 ipr_err("-----Expected Configuration-----\n"); 1465 ipr_err("Cache Directory Card Information:\n"); 1466 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd); 1467 ipr_err("Adapter Card Information:\n"); 1468 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd); 1469 1470 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1471 be32_to_cpu(error->ioa_data[0]), 1472 be32_to_cpu(error->ioa_data[1]), 1473 be32_to_cpu(error->ioa_data[2])); 1474} 1475 1476/** 1477 * ipr_log_cache_error - Log a cache error. 1478 * @ioa_cfg: ioa config struct 1479 * @hostrcb: hostrcb struct 1480 * 1481 * Return value: 1482 * none 1483 **/ 1484static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1485 struct ipr_hostrcb *hostrcb) 1486{ 1487 struct ipr_hostrcb_type_02_error *error = 1488 &hostrcb->hcam.u.error.u.type_02_error; 1489 1490 ipr_err("-----Current Configuration-----\n"); 1491 ipr_err("Cache Directory Card Information:\n"); 1492 ipr_log_vpd(&error->ioa_vpd); 1493 ipr_err("Adapter Card Information:\n"); 1494 ipr_log_vpd(&error->cfc_vpd); 1495 1496 ipr_err("-----Expected Configuration-----\n"); 1497 ipr_err("Cache Directory Card Information:\n"); 1498 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd); 1499 ipr_err("Adapter Card Information:\n"); 1500 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd); 1501 1502 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1503 be32_to_cpu(error->ioa_data[0]), 1504 be32_to_cpu(error->ioa_data[1]), 1505 be32_to_cpu(error->ioa_data[2])); 1506} 1507 1508/** 1509 * ipr_log_enhanced_config_error - Log a configuration error. 1510 * @ioa_cfg: ioa config struct 1511 * @hostrcb: hostrcb struct 1512 * 1513 * Return value: 1514 * none 1515 **/ 1516static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg, 1517 struct ipr_hostrcb *hostrcb) 1518{ 1519 int errors_logged, i; 1520 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry; 1521 struct ipr_hostrcb_type_13_error *error; 1522 1523 error = &hostrcb->hcam.u.error.u.type_13_error; 1524 errors_logged = be32_to_cpu(error->errors_logged); 1525 1526 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1527 be32_to_cpu(error->errors_detected), errors_logged); 1528 1529 dev_entry = error->dev; 1530 1531 for (i = 0; i < errors_logged; i++, dev_entry++) { 1532 ipr_err_separator; 1533 1534 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1535 ipr_log_ext_vpd(&dev_entry->vpd); 1536 1537 ipr_err("-----New Device Information-----\n"); 1538 ipr_log_ext_vpd(&dev_entry->new_vpd); 1539 1540 ipr_err("Cache Directory Card Information:\n"); 1541 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1542 1543 ipr_err("Adapter Card Information:\n"); 1544 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1545 } 1546} 1547 1548/** 1549 * ipr_log_sis64_config_error - Log a device error. 1550 * @ioa_cfg: ioa config struct 1551 * @hostrcb: hostrcb struct 1552 * 1553 * Return value: 1554 * none 1555 **/ 1556static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg, 1557 struct ipr_hostrcb *hostrcb) 1558{ 1559 int errors_logged, i; 1560 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry; 1561 struct ipr_hostrcb_type_23_error *error; 1562 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1563 1564 error = &hostrcb->hcam.u.error64.u.type_23_error; 1565 errors_logged = be32_to_cpu(error->errors_logged); 1566 1567 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1568 be32_to_cpu(error->errors_detected), errors_logged); 1569 1570 dev_entry = error->dev; 1571 1572 for (i = 0; i < errors_logged; i++, dev_entry++) { 1573 ipr_err_separator; 1574 1575 ipr_err("Device %d : %s", i + 1, 1576 ipr_format_resource_path(&dev_entry->res_path[0], &buffer[0])); 1577 ipr_log_ext_vpd(&dev_entry->vpd); 1578 1579 ipr_err("-----New Device Information-----\n"); 1580 ipr_log_ext_vpd(&dev_entry->new_vpd); 1581 1582 ipr_err("Cache Directory Card Information:\n"); 1583 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1584 1585 ipr_err("Adapter Card Information:\n"); 1586 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1587 } 1588} 1589 1590/** 1591 * ipr_log_config_error - Log a configuration error. 1592 * @ioa_cfg: ioa config struct 1593 * @hostrcb: hostrcb struct 1594 * 1595 * Return value: 1596 * none 1597 **/ 1598static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, 1599 struct ipr_hostrcb *hostrcb) 1600{ 1601 int errors_logged, i; 1602 struct ipr_hostrcb_device_data_entry *dev_entry; 1603 struct ipr_hostrcb_type_03_error *error; 1604 1605 error = &hostrcb->hcam.u.error.u.type_03_error; 1606 errors_logged = be32_to_cpu(error->errors_logged); 1607 1608 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1609 be32_to_cpu(error->errors_detected), errors_logged); 1610 1611 dev_entry = error->dev; 1612 1613 for (i = 0; i < errors_logged; i++, dev_entry++) { 1614 ipr_err_separator; 1615 1616 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1617 ipr_log_vpd(&dev_entry->vpd); 1618 1619 ipr_err("-----New Device Information-----\n"); 1620 ipr_log_vpd(&dev_entry->new_vpd); 1621 1622 ipr_err("Cache Directory Card Information:\n"); 1623 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd); 1624 1625 ipr_err("Adapter Card Information:\n"); 1626 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd); 1627 1628 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", 1629 be32_to_cpu(dev_entry->ioa_data[0]), 1630 be32_to_cpu(dev_entry->ioa_data[1]), 1631 be32_to_cpu(dev_entry->ioa_data[2]), 1632 be32_to_cpu(dev_entry->ioa_data[3]), 1633 be32_to_cpu(dev_entry->ioa_data[4])); 1634 } 1635} 1636 1637/** 1638 * ipr_log_enhanced_array_error - Log an array configuration error. 1639 * @ioa_cfg: ioa config struct 1640 * @hostrcb: hostrcb struct 1641 * 1642 * Return value: 1643 * none 1644 **/ 1645static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg, 1646 struct ipr_hostrcb *hostrcb) 1647{ 1648 int i, num_entries; 1649 struct ipr_hostrcb_type_14_error *error; 1650 struct ipr_hostrcb_array_data_entry_enhanced *array_entry; 1651 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1652 1653 error = &hostrcb->hcam.u.error.u.type_14_error; 1654 1655 ipr_err_separator; 1656 1657 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1658 error->protection_level, 1659 ioa_cfg->host->host_no, 1660 error->last_func_vset_res_addr.bus, 1661 error->last_func_vset_res_addr.target, 1662 error->last_func_vset_res_addr.lun); 1663 1664 ipr_err_separator; 1665 1666 array_entry = error->array_member; 1667 num_entries = min_t(u32, be32_to_cpu(error->num_entries), 1668 sizeof(error->array_member)); 1669 1670 for (i = 0; i < num_entries; i++, array_entry++) { 1671 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1672 continue; 1673 1674 if (be32_to_cpu(error->exposed_mode_adn) == i) 1675 ipr_err("Exposed Array Member %d:\n", i); 1676 else 1677 ipr_err("Array Member %d:\n", i); 1678 1679 ipr_log_ext_vpd(&array_entry->vpd); 1680 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1681 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1682 "Expected Location"); 1683 1684 ipr_err_separator; 1685 } 1686} 1687 1688/** 1689 * ipr_log_array_error - Log an array configuration error. 1690 * @ioa_cfg: ioa config struct 1691 * @hostrcb: hostrcb struct 1692 * 1693 * Return value: 1694 * none 1695 **/ 1696static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, 1697 struct ipr_hostrcb *hostrcb) 1698{ 1699 int i; 1700 struct ipr_hostrcb_type_04_error *error; 1701 struct ipr_hostrcb_array_data_entry *array_entry; 1702 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1703 1704 error = &hostrcb->hcam.u.error.u.type_04_error; 1705 1706 ipr_err_separator; 1707 1708 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1709 error->protection_level, 1710 ioa_cfg->host->host_no, 1711 error->last_func_vset_res_addr.bus, 1712 error->last_func_vset_res_addr.target, 1713 error->last_func_vset_res_addr.lun); 1714 1715 ipr_err_separator; 1716 1717 array_entry = error->array_member; 1718 1719 for (i = 0; i < 18; i++) { 1720 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1721 continue; 1722 1723 if (be32_to_cpu(error->exposed_mode_adn) == i) 1724 ipr_err("Exposed Array Member %d:\n", i); 1725 else 1726 ipr_err("Array Member %d:\n", i); 1727 1728 ipr_log_vpd(&array_entry->vpd); 1729 1730 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1731 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1732 "Expected Location"); 1733 1734 ipr_err_separator; 1735 1736 if (i == 9) 1737 array_entry = error->array_member2; 1738 else 1739 array_entry++; 1740 } 1741} 1742 1743/** 1744 * ipr_log_hex_data - Log additional hex IOA error data. 1745 * @ioa_cfg: ioa config struct 1746 * @data: IOA error data 1747 * @len: data length 1748 * 1749 * Return value: 1750 * none 1751 **/ 1752static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len) 1753{ 1754 int i; 1755 1756 if (len == 0) 1757 return; 1758 1759 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 1760 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP); 1761 1762 for (i = 0; i < len / 4; i += 4) { 1763 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 1764 be32_to_cpu(data[i]), 1765 be32_to_cpu(data[i+1]), 1766 be32_to_cpu(data[i+2]), 1767 be32_to_cpu(data[i+3])); 1768 } 1769} 1770 1771/** 1772 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error. 1773 * @ioa_cfg: ioa config struct 1774 * @hostrcb: hostrcb struct 1775 * 1776 * Return value: 1777 * none 1778 **/ 1779static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1780 struct ipr_hostrcb *hostrcb) 1781{ 1782 struct ipr_hostrcb_type_17_error *error; 1783 1784 if (ioa_cfg->sis64) 1785 error = &hostrcb->hcam.u.error64.u.type_17_error; 1786 else 1787 error = &hostrcb->hcam.u.error.u.type_17_error; 1788 1789 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1790 strim(error->failure_reason); 1791 1792 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 1793 be32_to_cpu(hostrcb->hcam.u.error.prc)); 1794 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd); 1795 ipr_log_hex_data(ioa_cfg, error->data, 1796 be32_to_cpu(hostrcb->hcam.length) - 1797 (offsetof(struct ipr_hostrcb_error, u) + 1798 offsetof(struct ipr_hostrcb_type_17_error, data))); 1799} 1800 1801/** 1802 * ipr_log_dual_ioa_error - Log a dual adapter error. 1803 * @ioa_cfg: ioa config struct 1804 * @hostrcb: hostrcb struct 1805 * 1806 * Return value: 1807 * none 1808 **/ 1809static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1810 struct ipr_hostrcb *hostrcb) 1811{ 1812 struct ipr_hostrcb_type_07_error *error; 1813 1814 error = &hostrcb->hcam.u.error.u.type_07_error; 1815 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1816 strim(error->failure_reason); 1817 1818 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 1819 be32_to_cpu(hostrcb->hcam.u.error.prc)); 1820 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd); 1821 ipr_log_hex_data(ioa_cfg, error->data, 1822 be32_to_cpu(hostrcb->hcam.length) - 1823 (offsetof(struct ipr_hostrcb_error, u) + 1824 offsetof(struct ipr_hostrcb_type_07_error, data))); 1825} 1826 1827static const struct { 1828 u8 active; 1829 char *desc; 1830} path_active_desc[] = { 1831 { IPR_PATH_NO_INFO, "Path" }, 1832 { IPR_PATH_ACTIVE, "Active path" }, 1833 { IPR_PATH_NOT_ACTIVE, "Inactive path" } 1834}; 1835 1836static const struct { 1837 u8 state; 1838 char *desc; 1839} path_state_desc[] = { 1840 { IPR_PATH_STATE_NO_INFO, "has no path state information available" }, 1841 { IPR_PATH_HEALTHY, "is healthy" }, 1842 { IPR_PATH_DEGRADED, "is degraded" }, 1843 { IPR_PATH_FAILED, "is failed" } 1844}; 1845 1846/** 1847 * ipr_log_fabric_path - Log a fabric path error 1848 * @hostrcb: hostrcb struct 1849 * @fabric: fabric descriptor 1850 * 1851 * Return value: 1852 * none 1853 **/ 1854static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb, 1855 struct ipr_hostrcb_fabric_desc *fabric) 1856{ 1857 int i, j; 1858 u8 path_state = fabric->path_state; 1859 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 1860 u8 state = path_state & IPR_PATH_STATE_MASK; 1861 1862 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 1863 if (path_active_desc[i].active != active) 1864 continue; 1865 1866 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 1867 if (path_state_desc[j].state != state) 1868 continue; 1869 1870 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) { 1871 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n", 1872 path_active_desc[i].desc, path_state_desc[j].desc, 1873 fabric->ioa_port); 1874 } else if (fabric->cascaded_expander == 0xff) { 1875 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n", 1876 path_active_desc[i].desc, path_state_desc[j].desc, 1877 fabric->ioa_port, fabric->phy); 1878 } else if (fabric->phy == 0xff) { 1879 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n", 1880 path_active_desc[i].desc, path_state_desc[j].desc, 1881 fabric->ioa_port, fabric->cascaded_expander); 1882 } else { 1883 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n", 1884 path_active_desc[i].desc, path_state_desc[j].desc, 1885 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1886 } 1887 return; 1888 } 1889 } 1890 1891 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state, 1892 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1893} 1894 1895/** 1896 * ipr_log64_fabric_path - Log a fabric path error 1897 * @hostrcb: hostrcb struct 1898 * @fabric: fabric descriptor 1899 * 1900 * Return value: 1901 * none 1902 **/ 1903static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb, 1904 struct ipr_hostrcb64_fabric_desc *fabric) 1905{ 1906 int i, j; 1907 u8 path_state = fabric->path_state; 1908 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 1909 u8 state = path_state & IPR_PATH_STATE_MASK; 1910 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1911 1912 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 1913 if (path_active_desc[i].active != active) 1914 continue; 1915 1916 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 1917 if (path_state_desc[j].state != state) 1918 continue; 1919 1920 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n", 1921 path_active_desc[i].desc, path_state_desc[j].desc, 1922 ipr_format_resource_path(&fabric->res_path[0], &buffer[0])); 1923 return; 1924 } 1925 } 1926 1927 ipr_err("Path state=%02X Resource Path=%s\n", path_state, 1928 ipr_format_resource_path(&fabric->res_path[0], &buffer[0])); 1929} 1930 1931static const struct { 1932 u8 type; 1933 char *desc; 1934} path_type_desc[] = { 1935 { IPR_PATH_CFG_IOA_PORT, "IOA port" }, 1936 { IPR_PATH_CFG_EXP_PORT, "Expander port" }, 1937 { IPR_PATH_CFG_DEVICE_PORT, "Device port" }, 1938 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" } 1939}; 1940 1941static const struct { 1942 u8 status; 1943 char *desc; 1944} path_status_desc[] = { 1945 { IPR_PATH_CFG_NO_PROB, "Functional" }, 1946 { IPR_PATH_CFG_DEGRADED, "Degraded" }, 1947 { IPR_PATH_CFG_FAILED, "Failed" }, 1948 { IPR_PATH_CFG_SUSPECT, "Suspect" }, 1949 { IPR_PATH_NOT_DETECTED, "Missing" }, 1950 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" } 1951}; 1952 1953static const char *link_rate[] = { 1954 "unknown", 1955 "disabled", 1956 "phy reset problem", 1957 "spinup hold", 1958 "port selector", 1959 "unknown", 1960 "unknown", 1961 "unknown", 1962 "1.5Gbps", 1963 "3.0Gbps", 1964 "unknown", 1965 "unknown", 1966 "unknown", 1967 "unknown", 1968 "unknown", 1969 "unknown" 1970}; 1971 1972/** 1973 * ipr_log_path_elem - Log a fabric path element. 1974 * @hostrcb: hostrcb struct 1975 * @cfg: fabric path element struct 1976 * 1977 * Return value: 1978 * none 1979 **/ 1980static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb, 1981 struct ipr_hostrcb_config_element *cfg) 1982{ 1983 int i, j; 1984 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 1985 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 1986 1987 if (type == IPR_PATH_CFG_NOT_EXIST) 1988 return; 1989 1990 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 1991 if (path_type_desc[i].type != type) 1992 continue; 1993 1994 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 1995 if (path_status_desc[j].status != status) 1996 continue; 1997 1998 if (type == IPR_PATH_CFG_IOA_PORT) { 1999 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n", 2000 path_status_desc[j].desc, path_type_desc[i].desc, 2001 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2002 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2003 } else { 2004 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) { 2005 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n", 2006 path_status_desc[j].desc, path_type_desc[i].desc, 2007 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2008 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2009 } else if (cfg->cascaded_expander == 0xff) { 2010 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, " 2011 "WWN=%08X%08X\n", path_status_desc[j].desc, 2012 path_type_desc[i].desc, cfg->phy, 2013 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2014 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2015 } else if (cfg->phy == 0xff) { 2016 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, " 2017 "WWN=%08X%08X\n", path_status_desc[j].desc, 2018 path_type_desc[i].desc, cfg->cascaded_expander, 2019 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2020 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2021 } else { 2022 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s " 2023 "WWN=%08X%08X\n", path_status_desc[j].desc, 2024 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy, 2025 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2026 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2027 } 2028 } 2029 return; 2030 } 2031 } 2032 2033 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s " 2034 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy, 2035 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2036 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2037} 2038 2039/** 2040 * ipr_log64_path_elem - Log a fabric path element. 2041 * @hostrcb: hostrcb struct 2042 * @cfg: fabric path element struct 2043 * 2044 * Return value: 2045 * none 2046 **/ 2047static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb, 2048 struct ipr_hostrcb64_config_element *cfg) 2049{ 2050 int i, j; 2051 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK; 2052 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 2053 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 2054 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2055 2056 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64) 2057 return; 2058 2059 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 2060 if (path_type_desc[i].type != type) 2061 continue; 2062 2063 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 2064 if (path_status_desc[j].status != status) 2065 continue; 2066 2067 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n", 2068 path_status_desc[j].desc, path_type_desc[i].desc, 2069 ipr_format_resource_path(&cfg->res_path[0], &buffer[0]), 2070 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2071 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2072 return; 2073 } 2074 } 2075 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s " 2076 "WWN=%08X%08X\n", cfg->type_status, 2077 ipr_format_resource_path(&cfg->res_path[0], &buffer[0]), 2078 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2079 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2080} 2081 2082/** 2083 * ipr_log_fabric_error - Log a fabric error. 2084 * @ioa_cfg: ioa config struct 2085 * @hostrcb: hostrcb struct 2086 * 2087 * Return value: 2088 * none 2089 **/ 2090static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 2091 struct ipr_hostrcb *hostrcb) 2092{ 2093 struct ipr_hostrcb_type_20_error *error; 2094 struct ipr_hostrcb_fabric_desc *fabric; 2095 struct ipr_hostrcb_config_element *cfg; 2096 int i, add_len; 2097 2098 error = &hostrcb->hcam.u.error.u.type_20_error; 2099 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2100 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 2101 2102 add_len = be32_to_cpu(hostrcb->hcam.length) - 2103 (offsetof(struct ipr_hostrcb_error, u) + 2104 offsetof(struct ipr_hostrcb_type_20_error, desc)); 2105 2106 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 2107 ipr_log_fabric_path(hostrcb, fabric); 2108 for_each_fabric_cfg(fabric, cfg) 2109 ipr_log_path_elem(hostrcb, cfg); 2110 2111 add_len -= be16_to_cpu(fabric->length); 2112 fabric = (struct ipr_hostrcb_fabric_desc *) 2113 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 2114 } 2115 2116 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len); 2117} 2118 2119/** 2120 * ipr_log_sis64_array_error - Log a sis64 array error. 2121 * @ioa_cfg: ioa config struct 2122 * @hostrcb: hostrcb struct 2123 * 2124 * Return value: 2125 * none 2126 **/ 2127static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg, 2128 struct ipr_hostrcb *hostrcb) 2129{ 2130 int i, num_entries; 2131 struct ipr_hostrcb_type_24_error *error; 2132 struct ipr_hostrcb64_array_data_entry *array_entry; 2133 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2134 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 2135 2136 error = &hostrcb->hcam.u.error64.u.type_24_error; 2137 2138 ipr_err_separator; 2139 2140 ipr_err("RAID %s Array Configuration: %s\n", 2141 error->protection_level, 2142 ipr_format_resource_path(&error->last_res_path[0], &buffer[0])); 2143 2144 ipr_err_separator; 2145 2146 array_entry = error->array_member; 2147 num_entries = min_t(u32, be32_to_cpu(error->num_entries), 2148 sizeof(error->array_member)); 2149 2150 for (i = 0; i < num_entries; i++, array_entry++) { 2151 2152 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 2153 continue; 2154 2155 if (error->exposed_mode_adn == i) 2156 ipr_err("Exposed Array Member %d:\n", i); 2157 else 2158 ipr_err("Array Member %d:\n", i); 2159 2160 ipr_err("Array Member %d:\n", i); 2161 ipr_log_ext_vpd(&array_entry->vpd); 2162 ipr_err("Current Location: %s", 2163 ipr_format_resource_path(&array_entry->res_path[0], &buffer[0])); 2164 ipr_err("Expected Location: %s", 2165 ipr_format_resource_path(&array_entry->expected_res_path[0], &buffer[0])); 2166 2167 ipr_err_separator; 2168 } 2169} 2170 2171/** 2172 * ipr_log_sis64_fabric_error - Log a sis64 fabric error. 2173 * @ioa_cfg: ioa config struct 2174 * @hostrcb: hostrcb struct 2175 * 2176 * Return value: 2177 * none 2178 **/ 2179static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 2180 struct ipr_hostrcb *hostrcb) 2181{ 2182 struct ipr_hostrcb_type_30_error *error; 2183 struct ipr_hostrcb64_fabric_desc *fabric; 2184 struct ipr_hostrcb64_config_element *cfg; 2185 int i, add_len; 2186 2187 error = &hostrcb->hcam.u.error64.u.type_30_error; 2188 2189 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2190 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 2191 2192 add_len = be32_to_cpu(hostrcb->hcam.length) - 2193 (offsetof(struct ipr_hostrcb64_error, u) + 2194 offsetof(struct ipr_hostrcb_type_30_error, desc)); 2195 2196 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 2197 ipr_log64_fabric_path(hostrcb, fabric); 2198 for_each_fabric_cfg(fabric, cfg) 2199 ipr_log64_path_elem(hostrcb, cfg); 2200 2201 add_len -= be16_to_cpu(fabric->length); 2202 fabric = (struct ipr_hostrcb64_fabric_desc *) 2203 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 2204 } 2205 2206 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len); 2207} 2208 2209/** 2210 * ipr_log_generic_error - Log an adapter error. 2211 * @ioa_cfg: ioa config struct 2212 * @hostrcb: hostrcb struct 2213 * 2214 * Return value: 2215 * none 2216 **/ 2217static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, 2218 struct ipr_hostrcb *hostrcb) 2219{ 2220 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data, 2221 be32_to_cpu(hostrcb->hcam.length)); 2222} 2223 2224/** 2225 * ipr_get_error - Find the specfied IOASC in the ipr_error_table. 2226 * @ioasc: IOASC 2227 * 2228 * This function will return the index of into the ipr_error_table 2229 * for the specified IOASC. If the IOASC is not in the table, 2230 * 0 will be returned, which points to the entry used for unknown errors. 2231 * 2232 * Return value: 2233 * index into the ipr_error_table 2234 **/ 2235static u32 ipr_get_error(u32 ioasc) 2236{ 2237 int i; 2238 2239 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) 2240 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK)) 2241 return i; 2242 2243 return 0; 2244} 2245 2246/** 2247 * ipr_handle_log_data - Log an adapter error. 2248 * @ioa_cfg: ioa config struct 2249 * @hostrcb: hostrcb struct 2250 * 2251 * This function logs an adapter error to the system. 2252 * 2253 * Return value: 2254 * none 2255 **/ 2256static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 2257 struct ipr_hostrcb *hostrcb) 2258{ 2259 u32 ioasc; 2260 int error_index; 2261 2262 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) 2263 return; 2264 2265 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) 2266 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); 2267 2268 if (ioa_cfg->sis64) 2269 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc); 2270 else 2271 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 2272 2273 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET || 2274 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) { 2275 /* Tell the midlayer we had a bus reset so it will handle the UA properly */ 2276 scsi_report_bus_reset(ioa_cfg->host, 2277 hostrcb->hcam.u.error.fd_res_addr.bus); 2278 } 2279 2280 error_index = ipr_get_error(ioasc); 2281 2282 if (!ipr_error_table[error_index].log_hcam) 2283 return; 2284 2285 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error); 2286 2287 /* Set indication we have logged an error */ 2288 ioa_cfg->errors_logged++; 2289 2290 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam) 2291 return; 2292 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw)) 2293 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw)); 2294 2295 switch (hostrcb->hcam.overlay_id) { 2296 case IPR_HOST_RCB_OVERLAY_ID_2: 2297 ipr_log_cache_error(ioa_cfg, hostrcb); 2298 break; 2299 case IPR_HOST_RCB_OVERLAY_ID_3: 2300 ipr_log_config_error(ioa_cfg, hostrcb); 2301 break; 2302 case IPR_HOST_RCB_OVERLAY_ID_4: 2303 case IPR_HOST_RCB_OVERLAY_ID_6: 2304 ipr_log_array_error(ioa_cfg, hostrcb); 2305 break; 2306 case IPR_HOST_RCB_OVERLAY_ID_7: 2307 ipr_log_dual_ioa_error(ioa_cfg, hostrcb); 2308 break; 2309 case IPR_HOST_RCB_OVERLAY_ID_12: 2310 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb); 2311 break; 2312 case IPR_HOST_RCB_OVERLAY_ID_13: 2313 ipr_log_enhanced_config_error(ioa_cfg, hostrcb); 2314 break; 2315 case IPR_HOST_RCB_OVERLAY_ID_14: 2316 case IPR_HOST_RCB_OVERLAY_ID_16: 2317 ipr_log_enhanced_array_error(ioa_cfg, hostrcb); 2318 break; 2319 case IPR_HOST_RCB_OVERLAY_ID_17: 2320 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb); 2321 break; 2322 case IPR_HOST_RCB_OVERLAY_ID_20: 2323 ipr_log_fabric_error(ioa_cfg, hostrcb); 2324 break; 2325 case IPR_HOST_RCB_OVERLAY_ID_23: 2326 ipr_log_sis64_config_error(ioa_cfg, hostrcb); 2327 break; 2328 case IPR_HOST_RCB_OVERLAY_ID_24: 2329 case IPR_HOST_RCB_OVERLAY_ID_26: 2330 ipr_log_sis64_array_error(ioa_cfg, hostrcb); 2331 break; 2332 case IPR_HOST_RCB_OVERLAY_ID_30: 2333 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb); 2334 break; 2335 case IPR_HOST_RCB_OVERLAY_ID_1: 2336 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: 2337 default: 2338 ipr_log_generic_error(ioa_cfg, hostrcb); 2339 break; 2340 } 2341} 2342 2343/** 2344 * ipr_process_error - Op done function for an adapter error log. 2345 * @ipr_cmd: ipr command struct 2346 * 2347 * This function is the op done function for an error log host 2348 * controlled async from the adapter. It will log the error and 2349 * send the HCAM back to the adapter. 2350 * 2351 * Return value: 2352 * none 2353 **/ 2354static void ipr_process_error(struct ipr_cmnd *ipr_cmd) 2355{ 2356 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2357 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 2358 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 2359 u32 fd_ioasc; 2360 2361 if (ioa_cfg->sis64) 2362 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc); 2363 else 2364 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 2365 2366 list_del(&hostrcb->queue); 2367 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 2368 2369 if (!ioasc) { 2370 ipr_handle_log_data(ioa_cfg, hostrcb); 2371 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED) 2372 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV); 2373 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) { 2374 dev_err(&ioa_cfg->pdev->dev, 2375 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 2376 } 2377 2378 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 2379} 2380 2381/** 2382 * ipr_timeout - An internally generated op has timed out. 2383 * @ipr_cmd: ipr command struct 2384 * 2385 * This function blocks host requests and initiates an 2386 * adapter reset. 2387 * 2388 * Return value: 2389 * none 2390 **/ 2391static void ipr_timeout(struct ipr_cmnd *ipr_cmd) 2392{ 2393 unsigned long lock_flags = 0; 2394 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2395 2396 ENTER; 2397 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2398 2399 ioa_cfg->errors_logged++; 2400 dev_err(&ioa_cfg->pdev->dev, 2401 "Adapter being reset due to command timeout.\n"); 2402 2403 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 2404 ioa_cfg->sdt_state = GET_DUMP; 2405 2406 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) 2407 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2408 2409 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2410 LEAVE; 2411} 2412 2413/** 2414 * ipr_oper_timeout - Adapter timed out transitioning to operational 2415 * @ipr_cmd: ipr command struct 2416 * 2417 * This function blocks host requests and initiates an 2418 * adapter reset. 2419 * 2420 * Return value: 2421 * none 2422 **/ 2423static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) 2424{ 2425 unsigned long lock_flags = 0; 2426 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2427 2428 ENTER; 2429 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2430 2431 ioa_cfg->errors_logged++; 2432 dev_err(&ioa_cfg->pdev->dev, 2433 "Adapter timed out transitioning to operational.\n"); 2434 2435 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 2436 ioa_cfg->sdt_state = GET_DUMP; 2437 2438 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { 2439 if (ipr_fastfail) 2440 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 2441 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2442 } 2443 2444 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2445 LEAVE; 2446} 2447 2448/** 2449 * ipr_reset_reload - Reset/Reload the IOA 2450 * @ioa_cfg: ioa config struct 2451 * @shutdown_type: shutdown type 2452 * 2453 * This function resets the adapter and re-initializes it. 2454 * This function assumes that all new host commands have been stopped. 2455 * Return value: 2456 * SUCCESS / FAILED 2457 **/ 2458static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg, 2459 enum ipr_shutdown_type shutdown_type) 2460{ 2461 if (!ioa_cfg->in_reset_reload) 2462 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 2463 2464 spin_unlock_irq(ioa_cfg->host->host_lock); 2465 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2466 spin_lock_irq(ioa_cfg->host->host_lock); 2467 2468 /* If we got hit with a host reset while we were already resetting 2469 the adapter for some reason, and the reset failed. */ 2470 if (ioa_cfg->ioa_is_dead) { 2471 ipr_trace; 2472 return FAILED; 2473 } 2474 2475 return SUCCESS; 2476} 2477 2478/** 2479 * ipr_find_ses_entry - Find matching SES in SES table 2480 * @res: resource entry struct of SES 2481 * 2482 * Return value: 2483 * pointer to SES table entry / NULL on failure 2484 **/ 2485static const struct ipr_ses_table_entry * 2486ipr_find_ses_entry(struct ipr_resource_entry *res) 2487{ 2488 int i, j, matches; 2489 struct ipr_std_inq_vpids *vpids; 2490 const struct ipr_ses_table_entry *ste = ipr_ses_table; 2491 2492 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { 2493 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { 2494 if (ste->compare_product_id_byte[j] == 'X') { 2495 vpids = &res->std_inq_data.vpids; 2496 if (vpids->product_id[j] == ste->product_id[j]) 2497 matches++; 2498 else 2499 break; 2500 } else 2501 matches++; 2502 } 2503 2504 if (matches == IPR_PROD_ID_LEN) 2505 return ste; 2506 } 2507 2508 return NULL; 2509} 2510 2511/** 2512 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus 2513 * @ioa_cfg: ioa config struct 2514 * @bus: SCSI bus 2515 * @bus_width: bus width 2516 * 2517 * Return value: 2518 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz 2519 * For a 2-byte wide SCSI bus, the maximum transfer speed is 2520 * twice the maximum transfer rate (e.g. for a wide enabled bus, 2521 * max 160MHz = max 320MB/sec). 2522 **/ 2523static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) 2524{ 2525 struct ipr_resource_entry *res; 2526 const struct ipr_ses_table_entry *ste; 2527 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); 2528 2529 /* Loop through each config table entry in the config table buffer */ 2530 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2531 if (!(IPR_IS_SES_DEVICE(res->std_inq_data))) 2532 continue; 2533 2534 if (bus != res->bus) 2535 continue; 2536 2537 if (!(ste = ipr_find_ses_entry(res))) 2538 continue; 2539 2540 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); 2541 } 2542 2543 return max_xfer_rate; 2544} 2545 2546/** 2547 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA 2548 * @ioa_cfg: ioa config struct 2549 * @max_delay: max delay in micro-seconds to wait 2550 * 2551 * Waits for an IODEBUG ACK from the IOA, doing busy looping. 2552 * 2553 * Return value: 2554 * 0 on success / other on failure 2555 **/ 2556static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) 2557{ 2558 volatile u32 pcii_reg; 2559 int delay = 1; 2560 2561 /* Read interrupt reg until IOA signals IO Debug Acknowledge */ 2562 while (delay < max_delay) { 2563 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 2564 2565 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) 2566 return 0; 2567 2568 /* udelay cannot be used if delay is more than a few milliseconds */ 2569 if ((delay / 1000) > MAX_UDELAY_MS) 2570 mdelay(delay / 1000); 2571 else 2572 udelay(delay); 2573 2574 delay += delay; 2575 } 2576 return -EIO; 2577} 2578 2579/** 2580 * ipr_get_sis64_dump_data_section - Dump IOA memory 2581 * @ioa_cfg: ioa config struct 2582 * @start_addr: adapter address to dump 2583 * @dest: destination kernel buffer 2584 * @length_in_words: length to dump in 4 byte words 2585 * 2586 * Return value: 2587 * 0 on success 2588 **/ 2589static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg, 2590 u32 start_addr, 2591 __be32 *dest, u32 length_in_words) 2592{ 2593 int i; 2594 2595 for (i = 0; i < length_in_words; i++) { 2596 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg); 2597 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg)); 2598 dest++; 2599 } 2600 2601 return 0; 2602} 2603 2604/** 2605 * ipr_get_ldump_data_section - Dump IOA memory 2606 * @ioa_cfg: ioa config struct 2607 * @start_addr: adapter address to dump 2608 * @dest: destination kernel buffer 2609 * @length_in_words: length to dump in 4 byte words 2610 * 2611 * Return value: 2612 * 0 on success / -EIO on failure 2613 **/ 2614static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, 2615 u32 start_addr, 2616 __be32 *dest, u32 length_in_words) 2617{ 2618 volatile u32 temp_pcii_reg; 2619 int i, delay = 0; 2620 2621 if (ioa_cfg->sis64) 2622 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr, 2623 dest, length_in_words); 2624 2625 /* Write IOA interrupt reg starting LDUMP state */ 2626 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), 2627 ioa_cfg->regs.set_uproc_interrupt_reg32); 2628 2629 /* Wait for IO debug acknowledge */ 2630 if (ipr_wait_iodbg_ack(ioa_cfg, 2631 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { 2632 dev_err(&ioa_cfg->pdev->dev, 2633 "IOA dump long data transfer timeout\n"); 2634 return -EIO; 2635 } 2636 2637 /* Signal LDUMP interlocked - clear IO debug ack */ 2638 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2639 ioa_cfg->regs.clr_interrupt_reg); 2640 2641 /* Write Mailbox with starting address */ 2642 writel(start_addr, ioa_cfg->ioa_mailbox); 2643 2644 /* Signal address valid - clear IOA Reset alert */ 2645 writel(IPR_UPROCI_RESET_ALERT, 2646 ioa_cfg->regs.clr_uproc_interrupt_reg32); 2647 2648 for (i = 0; i < length_in_words; i++) { 2649 /* Wait for IO debug acknowledge */ 2650 if (ipr_wait_iodbg_ack(ioa_cfg, 2651 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { 2652 dev_err(&ioa_cfg->pdev->dev, 2653 "IOA dump short data transfer timeout\n"); 2654 return -EIO; 2655 } 2656 2657 /* Read data from mailbox and increment destination pointer */ 2658 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); 2659 dest++; 2660 2661 /* For all but the last word of data, signal data received */ 2662 if (i < (length_in_words - 1)) { 2663 /* Signal dump data received - Clear IO debug Ack */ 2664 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2665 ioa_cfg->regs.clr_interrupt_reg); 2666 } 2667 } 2668 2669 /* Signal end of block transfer. Set reset alert then clear IO debug ack */ 2670 writel(IPR_UPROCI_RESET_ALERT, 2671 ioa_cfg->regs.set_uproc_interrupt_reg32); 2672 2673 writel(IPR_UPROCI_IO_DEBUG_ALERT, 2674 ioa_cfg->regs.clr_uproc_interrupt_reg32); 2675 2676 /* Signal dump data received - Clear IO debug Ack */ 2677 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2678 ioa_cfg->regs.clr_interrupt_reg); 2679 2680 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ 2681 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { 2682 temp_pcii_reg = 2683 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); 2684 2685 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) 2686 return 0; 2687 2688 udelay(10); 2689 delay += 10; 2690 } 2691 2692 return 0; 2693} 2694 2695#ifdef CONFIG_SCSI_IPR_DUMP 2696/** 2697 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer 2698 * @ioa_cfg: ioa config struct 2699 * @pci_address: adapter address 2700 * @length: length of data to copy 2701 * 2702 * Copy data from PCI adapter to kernel buffer. 2703 * Note: length MUST be a 4 byte multiple 2704 * Return value: 2705 * 0 on success / other on failure 2706 **/ 2707static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, 2708 unsigned long pci_address, u32 length) 2709{ 2710 int bytes_copied = 0; 2711 int cur_len, rc, rem_len, rem_page_len; 2712 __be32 *page; 2713 unsigned long lock_flags = 0; 2714 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; 2715 2716 while (bytes_copied < length && 2717 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) { 2718 if (ioa_dump->page_offset >= PAGE_SIZE || 2719 ioa_dump->page_offset == 0) { 2720 page = (__be32 *)__get_free_page(GFP_ATOMIC); 2721 2722 if (!page) { 2723 ipr_trace; 2724 return bytes_copied; 2725 } 2726 2727 ioa_dump->page_offset = 0; 2728 ioa_dump->ioa_data[ioa_dump->next_page_index] = page; 2729 ioa_dump->next_page_index++; 2730 } else 2731 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; 2732 2733 rem_len = length - bytes_copied; 2734 rem_page_len = PAGE_SIZE - ioa_dump->page_offset; 2735 cur_len = min(rem_len, rem_page_len); 2736 2737 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2738 if (ioa_cfg->sdt_state == ABORT_DUMP) { 2739 rc = -EIO; 2740 } else { 2741 rc = ipr_get_ldump_data_section(ioa_cfg, 2742 pci_address + bytes_copied, 2743 &page[ioa_dump->page_offset / 4], 2744 (cur_len / sizeof(u32))); 2745 } 2746 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2747 2748 if (!rc) { 2749 ioa_dump->page_offset += cur_len; 2750 bytes_copied += cur_len; 2751 } else { 2752 ipr_trace; 2753 break; 2754 } 2755 schedule(); 2756 } 2757 2758 return bytes_copied; 2759} 2760 2761/** 2762 * ipr_init_dump_entry_hdr - Initialize a dump entry header. 2763 * @hdr: dump entry header struct 2764 * 2765 * Return value: 2766 * nothing 2767 **/ 2768static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) 2769{ 2770 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; 2771 hdr->num_elems = 1; 2772 hdr->offset = sizeof(*hdr); 2773 hdr->status = IPR_DUMP_STATUS_SUCCESS; 2774} 2775 2776/** 2777 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. 2778 * @ioa_cfg: ioa config struct 2779 * @driver_dump: driver dump struct 2780 * 2781 * Return value: 2782 * nothing 2783 **/ 2784static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, 2785 struct ipr_driver_dump *driver_dump) 2786{ 2787 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2788 2789 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); 2790 driver_dump->ioa_type_entry.hdr.len = 2791 sizeof(struct ipr_dump_ioa_type_entry) - 2792 sizeof(struct ipr_dump_entry_header); 2793 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2794 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; 2795 driver_dump->ioa_type_entry.type = ioa_cfg->type; 2796 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | 2797 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | 2798 ucode_vpd->minor_release[1]; 2799 driver_dump->hdr.num_entries++; 2800} 2801 2802/** 2803 * ipr_dump_version_data - Fill in the driver version in the dump. 2804 * @ioa_cfg: ioa config struct 2805 * @driver_dump: driver dump struct 2806 * 2807 * Return value: 2808 * nothing 2809 **/ 2810static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, 2811 struct ipr_driver_dump *driver_dump) 2812{ 2813 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); 2814 driver_dump->version_entry.hdr.len = 2815 sizeof(struct ipr_dump_version_entry) - 2816 sizeof(struct ipr_dump_entry_header); 2817 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2818 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; 2819 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); 2820 driver_dump->hdr.num_entries++; 2821} 2822 2823/** 2824 * ipr_dump_trace_data - Fill in the IOA trace in the dump. 2825 * @ioa_cfg: ioa config struct 2826 * @driver_dump: driver dump struct 2827 * 2828 * Return value: 2829 * nothing 2830 **/ 2831static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, 2832 struct ipr_driver_dump *driver_dump) 2833{ 2834 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); 2835 driver_dump->trace_entry.hdr.len = 2836 sizeof(struct ipr_dump_trace_entry) - 2837 sizeof(struct ipr_dump_entry_header); 2838 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2839 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; 2840 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); 2841 driver_dump->hdr.num_entries++; 2842} 2843 2844/** 2845 * ipr_dump_location_data - Fill in the IOA location in the dump. 2846 * @ioa_cfg: ioa config struct 2847 * @driver_dump: driver dump struct 2848 * 2849 * Return value: 2850 * nothing 2851 **/ 2852static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, 2853 struct ipr_driver_dump *driver_dump) 2854{ 2855 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); 2856 driver_dump->location_entry.hdr.len = 2857 sizeof(struct ipr_dump_location_entry) - 2858 sizeof(struct ipr_dump_entry_header); 2859 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2860 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; 2861 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev)); 2862 driver_dump->hdr.num_entries++; 2863} 2864 2865/** 2866 * ipr_get_ioa_dump - Perform a dump of the driver and adapter. 2867 * @ioa_cfg: ioa config struct 2868 * @dump: dump struct 2869 * 2870 * Return value: 2871 * nothing 2872 **/ 2873static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) 2874{ 2875 unsigned long start_addr, sdt_word; 2876 unsigned long lock_flags = 0; 2877 struct ipr_driver_dump *driver_dump = &dump->driver_dump; 2878 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; 2879 u32 num_entries, start_off, end_off; 2880 u32 bytes_to_copy, bytes_copied, rc; 2881 struct ipr_sdt *sdt; 2882 int valid = 1; 2883 int i; 2884 2885 ENTER; 2886 2887 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2888 2889 if (ioa_cfg->sdt_state != GET_DUMP) { 2890 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2891 return; 2892 } 2893 2894 start_addr = readl(ioa_cfg->ioa_mailbox); 2895 2896 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) { 2897 dev_err(&ioa_cfg->pdev->dev, 2898 "Invalid dump table format: %lx\n", start_addr); 2899 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2900 return; 2901 } 2902 2903 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); 2904 2905 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; 2906 2907 /* Initialize the overall dump header */ 2908 driver_dump->hdr.len = sizeof(struct ipr_driver_dump); 2909 driver_dump->hdr.num_entries = 1; 2910 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); 2911 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; 2912 driver_dump->hdr.os = IPR_DUMP_OS_LINUX; 2913 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; 2914 2915 ipr_dump_version_data(ioa_cfg, driver_dump); 2916 ipr_dump_location_data(ioa_cfg, driver_dump); 2917 ipr_dump_ioa_type_data(ioa_cfg, driver_dump); 2918 ipr_dump_trace_data(ioa_cfg, driver_dump); 2919 2920 /* Update dump_header */ 2921 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); 2922 2923 /* IOA Dump entry */ 2924 ipr_init_dump_entry_hdr(&ioa_dump->hdr); 2925 ioa_dump->hdr.len = 0; 2926 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2927 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; 2928 2929 /* First entries in sdt are actually a list of dump addresses and 2930 lengths to gather the real dump data. sdt represents the pointer 2931 to the ioa generated dump table. Dump data will be extracted based 2932 on entries in this table */ 2933 sdt = &ioa_dump->sdt; 2934 2935 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, 2936 sizeof(struct ipr_sdt) / sizeof(__be32)); 2937 2938 /* Smart Dump table is ready to use and the first entry is valid */ 2939 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) && 2940 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) { 2941 dev_err(&ioa_cfg->pdev->dev, 2942 "Dump of IOA failed. Dump table not valid: %d, %X.\n", 2943 rc, be32_to_cpu(sdt->hdr.state)); 2944 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; 2945 ioa_cfg->sdt_state = DUMP_OBTAINED; 2946 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2947 return; 2948 } 2949 2950 num_entries = be32_to_cpu(sdt->hdr.num_entries_used); 2951 2952 if (num_entries > IPR_NUM_SDT_ENTRIES) 2953 num_entries = IPR_NUM_SDT_ENTRIES; 2954 2955 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2956 2957 for (i = 0; i < num_entries; i++) { 2958 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) { 2959 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 2960 break; 2961 } 2962 2963 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { 2964 sdt_word = be32_to_cpu(sdt->entry[i].start_token); 2965 if (ioa_cfg->sis64) 2966 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token); 2967 else { 2968 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; 2969 end_off = be32_to_cpu(sdt->entry[i].end_token); 2970 2971 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) 2972 bytes_to_copy = end_off - start_off; 2973 else 2974 valid = 0; 2975 } 2976 if (valid) { 2977 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) { 2978 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; 2979 continue; 2980 } 2981 2982 /* Copy data from adapter to driver buffers */ 2983 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, 2984 bytes_to_copy); 2985 2986 ioa_dump->hdr.len += bytes_copied; 2987 2988 if (bytes_copied != bytes_to_copy) { 2989 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 2990 break; 2991 } 2992 } 2993 } 2994 } 2995 2996 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); 2997 2998 /* Update dump_header */ 2999 driver_dump->hdr.len += ioa_dump->hdr.len; 3000 wmb(); 3001 ioa_cfg->sdt_state = DUMP_OBTAINED; 3002 LEAVE; 3003} 3004 3005#else 3006#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0) 3007#endif 3008 3009/** 3010 * ipr_release_dump - Free adapter dump memory 3011 * @kref: kref struct 3012 * 3013 * Return value: 3014 * nothing 3015 **/ 3016static void ipr_release_dump(struct kref *kref) 3017{ 3018 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref); 3019 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; 3020 unsigned long lock_flags = 0; 3021 int i; 3022 3023 ENTER; 3024 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3025 ioa_cfg->dump = NULL; 3026 ioa_cfg->sdt_state = INACTIVE; 3027 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3028 3029 for (i = 0; i < dump->ioa_dump.next_page_index; i++) 3030 free_page((unsigned long) dump->ioa_dump.ioa_data[i]); 3031 3032 kfree(dump); 3033 LEAVE; 3034} 3035 3036/** 3037 * ipr_worker_thread - Worker thread 3038 * @work: ioa config struct 3039 * 3040 * Called at task level from a work thread. This function takes care 3041 * of adding and removing device from the mid-layer as configuration 3042 * changes are detected by the adapter. 3043 * 3044 * Return value: 3045 * nothing 3046 **/ 3047static void ipr_worker_thread(struct work_struct *work) 3048{ 3049 unsigned long lock_flags; 3050 struct ipr_resource_entry *res; 3051 struct scsi_device *sdev; 3052 struct ipr_dump *dump; 3053 struct ipr_ioa_cfg *ioa_cfg = 3054 container_of(work, struct ipr_ioa_cfg, work_q); 3055 u8 bus, target, lun; 3056 int did_work; 3057 3058 ENTER; 3059 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3060 3061 if (ioa_cfg->sdt_state == GET_DUMP) { 3062 dump = ioa_cfg->dump; 3063 if (!dump) { 3064 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3065 return; 3066 } 3067 kref_get(&dump->kref); 3068 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3069 ipr_get_ioa_dump(ioa_cfg, dump); 3070 kref_put(&dump->kref, ipr_release_dump); 3071 3072 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3073 if (ioa_cfg->sdt_state == DUMP_OBTAINED) 3074 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3075 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3076 return; 3077 } 3078 3079restart: 3080 do { 3081 did_work = 0; 3082 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) { 3083 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3084 return; 3085 } 3086 3087 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3088 if (res->del_from_ml && res->sdev) { 3089 did_work = 1; 3090 sdev = res->sdev; 3091 if (!scsi_device_get(sdev)) { 3092 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 3093 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3094 scsi_remove_device(sdev); 3095 scsi_device_put(sdev); 3096 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3097 } 3098 break; 3099 } 3100 } 3101 } while(did_work); 3102 3103 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3104 if (res->add_to_ml) { 3105 bus = res->bus; 3106 target = res->target; 3107 lun = res->lun; 3108 res->add_to_ml = 0; 3109 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3110 scsi_add_device(ioa_cfg->host, bus, target, lun); 3111 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3112 goto restart; 3113 } 3114 } 3115 3116 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3117 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE); 3118 LEAVE; 3119} 3120 3121#ifdef CONFIG_SCSI_IPR_TRACE 3122/** 3123 * ipr_read_trace - Dump the adapter trace 3124 * @filp: open sysfs file 3125 * @kobj: kobject struct 3126 * @bin_attr: bin_attribute struct 3127 * @buf: buffer 3128 * @off: offset 3129 * @count: buffer size 3130 * 3131 * Return value: 3132 * number of bytes printed to buffer 3133 **/ 3134static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj, 3135 struct bin_attribute *bin_attr, 3136 char *buf, loff_t off, size_t count) 3137{ 3138 struct device *dev = container_of(kobj, struct device, kobj); 3139 struct Scsi_Host *shost = class_to_shost(dev); 3140 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3141 unsigned long lock_flags = 0; 3142 ssize_t ret; 3143 3144 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3145 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace, 3146 IPR_TRACE_SIZE); 3147 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3148 3149 return ret; 3150} 3151 3152static struct bin_attribute ipr_trace_attr = { 3153 .attr = { 3154 .name = "trace", 3155 .mode = S_IRUGO, 3156 }, 3157 .size = 0, 3158 .read = ipr_read_trace, 3159}; 3160#endif 3161 3162/** 3163 * ipr_show_fw_version - Show the firmware version 3164 * @dev: class device struct 3165 * @buf: buffer 3166 * 3167 * Return value: 3168 * number of bytes printed to buffer 3169 **/ 3170static ssize_t ipr_show_fw_version(struct device *dev, 3171 struct device_attribute *attr, char *buf) 3172{ 3173 struct Scsi_Host *shost = class_to_shost(dev); 3174 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3175 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 3176 unsigned long lock_flags = 0; 3177 int len; 3178 3179 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3180 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 3181 ucode_vpd->major_release, ucode_vpd->card_type, 3182 ucode_vpd->minor_release[0], 3183 ucode_vpd->minor_release[1]); 3184 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3185 return len; 3186} 3187 3188static struct device_attribute ipr_fw_version_attr = { 3189 .attr = { 3190 .name = "fw_version", 3191 .mode = S_IRUGO, 3192 }, 3193 .show = ipr_show_fw_version, 3194}; 3195 3196/** 3197 * ipr_show_log_level - Show the adapter's error logging level 3198 * @dev: class device struct 3199 * @buf: buffer 3200 * 3201 * Return value: 3202 * number of bytes printed to buffer 3203 **/ 3204static ssize_t ipr_show_log_level(struct device *dev, 3205 struct device_attribute *attr, char *buf) 3206{ 3207 struct Scsi_Host *shost = class_to_shost(dev); 3208 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3209 unsigned long lock_flags = 0; 3210 int len; 3211 3212 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3213 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 3214 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3215 return len; 3216} 3217 3218/** 3219 * ipr_store_log_level - Change the adapter's error logging level 3220 * @dev: class device struct 3221 * @buf: buffer 3222 * 3223 * Return value: 3224 * number of bytes printed to buffer 3225 **/ 3226static ssize_t ipr_store_log_level(struct device *dev, 3227 struct device_attribute *attr, 3228 const char *buf, size_t count) 3229{ 3230 struct Scsi_Host *shost = class_to_shost(dev); 3231 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3232 unsigned long lock_flags = 0; 3233 3234 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3235 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 3236 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3237 return strlen(buf); 3238} 3239 3240static struct device_attribute ipr_log_level_attr = { 3241 .attr = { 3242 .name = "log_level", 3243 .mode = S_IRUGO | S_IWUSR, 3244 }, 3245 .show = ipr_show_log_level, 3246 .store = ipr_store_log_level 3247}; 3248 3249/** 3250 * ipr_store_diagnostics - IOA Diagnostics interface 3251 * @dev: device struct 3252 * @buf: buffer 3253 * @count: buffer size 3254 * 3255 * This function will reset the adapter and wait a reasonable 3256 * amount of time for any errors that the adapter might log. 3257 * 3258 * Return value: 3259 * count on success / other on failure 3260 **/ 3261static ssize_t ipr_store_diagnostics(struct device *dev, 3262 struct device_attribute *attr, 3263 const char *buf, size_t count) 3264{ 3265 struct Scsi_Host *shost = class_to_shost(dev); 3266 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3267 unsigned long lock_flags = 0; 3268 int rc = count; 3269 3270 if (!capable(CAP_SYS_ADMIN)) 3271 return -EACCES; 3272 3273 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3274 while(ioa_cfg->in_reset_reload) { 3275 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3276 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3277 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3278 } 3279 3280 ioa_cfg->errors_logged = 0; 3281 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3282 3283 if (ioa_cfg->in_reset_reload) { 3284 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3285 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3286 3287 /* Wait for a second for any errors to be logged */ 3288 msleep(1000); 3289 } else { 3290 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3291 return -EIO; 3292 } 3293 3294 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3295 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 3296 rc = -EIO; 3297 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3298 3299 return rc; 3300} 3301 3302static struct device_attribute ipr_diagnostics_attr = { 3303 .attr = { 3304 .name = "run_diagnostics", 3305 .mode = S_IWUSR, 3306 }, 3307 .store = ipr_store_diagnostics 3308}; 3309 3310/** 3311 * ipr_show_adapter_state - Show the adapter's state 3312 * @class_dev: device struct 3313 * @buf: buffer 3314 * 3315 * Return value: 3316 * number of bytes printed to buffer 3317 **/ 3318static ssize_t ipr_show_adapter_state(struct device *dev, 3319 struct device_attribute *attr, char *buf) 3320{ 3321 struct Scsi_Host *shost = class_to_shost(dev); 3322 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3323 unsigned long lock_flags = 0; 3324 int len; 3325 3326 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3327 if (ioa_cfg->ioa_is_dead) 3328 len = snprintf(buf, PAGE_SIZE, "offline\n"); 3329 else 3330 len = snprintf(buf, PAGE_SIZE, "online\n"); 3331 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3332 return len; 3333} 3334 3335/** 3336 * ipr_store_adapter_state - Change adapter state 3337 * @dev: device struct 3338 * @buf: buffer 3339 * @count: buffer size 3340 * 3341 * This function will change the adapter's state. 3342 * 3343 * Return value: 3344 * count on success / other on failure 3345 **/ 3346static ssize_t ipr_store_adapter_state(struct device *dev, 3347 struct device_attribute *attr, 3348 const char *buf, size_t count) 3349{ 3350 struct Scsi_Host *shost = class_to_shost(dev); 3351 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3352 unsigned long lock_flags; 3353 int result = count; 3354 3355 if (!capable(CAP_SYS_ADMIN)) 3356 return -EACCES; 3357 3358 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3359 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) { 3360 ioa_cfg->ioa_is_dead = 0; 3361 ioa_cfg->reset_retries = 0; 3362 ioa_cfg->in_ioa_bringdown = 0; 3363 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3364 } 3365 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3366 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3367 3368 return result; 3369} 3370 3371static struct device_attribute ipr_ioa_state_attr = { 3372 .attr = { 3373 .name = "online_state", 3374 .mode = S_IRUGO | S_IWUSR, 3375 }, 3376 .show = ipr_show_adapter_state, 3377 .store = ipr_store_adapter_state 3378}; 3379 3380/** 3381 * ipr_store_reset_adapter - Reset the adapter 3382 * @dev: device struct 3383 * @buf: buffer 3384 * @count: buffer size 3385 * 3386 * This function will reset the adapter. 3387 * 3388 * Return value: 3389 * count on success / other on failure 3390 **/ 3391static ssize_t ipr_store_reset_adapter(struct device *dev, 3392 struct device_attribute *attr, 3393 const char *buf, size_t count) 3394{ 3395 struct Scsi_Host *shost = class_to_shost(dev); 3396 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3397 unsigned long lock_flags; 3398 int result = count; 3399 3400 if (!capable(CAP_SYS_ADMIN)) 3401 return -EACCES; 3402 3403 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3404 if (!ioa_cfg->in_reset_reload) 3405 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3406 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3407 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3408 3409 return result; 3410} 3411 3412static struct device_attribute ipr_ioa_reset_attr = { 3413 .attr = { 3414 .name = "reset_host", 3415 .mode = S_IWUSR, 3416 }, 3417 .store = ipr_store_reset_adapter 3418}; 3419 3420/** 3421 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 3422 * @buf_len: buffer length 3423 * 3424 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 3425 * list to use for microcode download 3426 * 3427 * Return value: 3428 * pointer to sglist / NULL on failure 3429 **/ 3430static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 3431{ 3432 int sg_size, order, bsize_elem, num_elem, i, j; 3433 struct ipr_sglist *sglist; 3434 struct scatterlist *scatterlist; 3435 struct page *page; 3436 3437 /* Get the minimum size per scatter/gather element */ 3438 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 3439 3440 /* Get the actual size per element */ 3441 order = get_order(sg_size); 3442 3443 /* Determine the actual number of bytes per element */ 3444 bsize_elem = PAGE_SIZE * (1 << order); 3445 3446 /* Determine the actual number of sg entries needed */ 3447 if (buf_len % bsize_elem) 3448 num_elem = (buf_len / bsize_elem) + 1; 3449 else 3450 num_elem = buf_len / bsize_elem; 3451 3452 /* Allocate a scatter/gather list for the DMA */ 3453 sglist = kzalloc(sizeof(struct ipr_sglist) + 3454 (sizeof(struct scatterlist) * (num_elem - 1)), 3455 GFP_KERNEL); 3456 3457 if (sglist == NULL) { 3458 ipr_trace; 3459 return NULL; 3460 } 3461 3462 scatterlist = sglist->scatterlist; 3463 sg_init_table(scatterlist, num_elem); 3464 3465 sglist->order = order; 3466 sglist->num_sg = num_elem; 3467 3468 /* Allocate a bunch of sg elements */ 3469 for (i = 0; i < num_elem; i++) { 3470 page = alloc_pages(GFP_KERNEL, order); 3471 if (!page) { 3472 ipr_trace; 3473 3474 /* Free up what we already allocated */ 3475 for (j = i - 1; j >= 0; j--) 3476 __free_pages(sg_page(&scatterlist[j]), order); 3477 kfree(sglist); 3478 return NULL; 3479 } 3480 3481 sg_set_page(&scatterlist[i], page, 0, 0); 3482 } 3483 3484 return sglist; 3485} 3486 3487/** 3488 * ipr_free_ucode_buffer - Frees a microcode download buffer 3489 * @p_dnld: scatter/gather list pointer 3490 * 3491 * Free a DMA'able ucode download buffer previously allocated with 3492 * ipr_alloc_ucode_buffer 3493 * 3494 * Return value: 3495 * nothing 3496 **/ 3497static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 3498{ 3499 int i; 3500 3501 for (i = 0; i < sglist->num_sg; i++) 3502 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order); 3503 3504 kfree(sglist); 3505} 3506 3507/** 3508 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 3509 * @sglist: scatter/gather list pointer 3510 * @buffer: buffer pointer 3511 * @len: buffer length 3512 * 3513 * Copy a microcode image from a user buffer into a buffer allocated by 3514 * ipr_alloc_ucode_buffer 3515 * 3516 * Return value: 3517 * 0 on success / other on failure 3518 **/ 3519static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 3520 u8 *buffer, u32 len) 3521{ 3522 int bsize_elem, i, result = 0; 3523 struct scatterlist *scatterlist; 3524 void *kaddr; 3525 3526 /* Determine the actual number of bytes per element */ 3527 bsize_elem = PAGE_SIZE * (1 << sglist->order); 3528 3529 scatterlist = sglist->scatterlist; 3530 3531 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { 3532 struct page *page = sg_page(&scatterlist[i]); 3533 3534 kaddr = kmap(page); 3535 memcpy(kaddr, buffer, bsize_elem); 3536 kunmap(page); 3537 3538 scatterlist[i].length = bsize_elem; 3539 3540 if (result != 0) { 3541 ipr_trace; 3542 return result; 3543 } 3544 } 3545 3546 if (len % bsize_elem) { 3547 struct page *page = sg_page(&scatterlist[i]); 3548 3549 kaddr = kmap(page); 3550 memcpy(kaddr, buffer, len % bsize_elem); 3551 kunmap(page); 3552 3553 scatterlist[i].length = len % bsize_elem; 3554 } 3555 3556 sglist->buffer_len = len; 3557 return result; 3558} 3559 3560/** 3561 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL 3562 * @ipr_cmd: ipr command struct 3563 * @sglist: scatter/gather list 3564 * 3565 * Builds a microcode download IOA data list (IOADL). 3566 * 3567 **/ 3568static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd, 3569 struct ipr_sglist *sglist) 3570{ 3571 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3572 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 3573 struct scatterlist *scatterlist = sglist->scatterlist; 3574 int i; 3575 3576 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 3577 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3578 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 3579 3580 ioarcb->ioadl_len = 3581 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 3582 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3583 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE); 3584 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i])); 3585 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i])); 3586 } 3587 3588 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3589} 3590 3591/** 3592 * ipr_build_ucode_ioadl - Build a microcode download IOADL 3593 * @ipr_cmd: ipr command struct 3594 * @sglist: scatter/gather list 3595 * 3596 * Builds a microcode download IOA data list (IOADL). 3597 * 3598 **/ 3599static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, 3600 struct ipr_sglist *sglist) 3601{ 3602 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3603 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 3604 struct scatterlist *scatterlist = sglist->scatterlist; 3605 int i; 3606 3607 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 3608 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3609 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 3610 3611 ioarcb->ioadl_len = 3612 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 3613 3614 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3615 ioadl[i].flags_and_data_len = 3616 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); 3617 ioadl[i].address = 3618 cpu_to_be32(sg_dma_address(&scatterlist[i])); 3619 } 3620 3621 ioadl[i-1].flags_and_data_len |= 3622 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3623} 3624 3625/** 3626 * ipr_update_ioa_ucode - Update IOA's microcode 3627 * @ioa_cfg: ioa config struct 3628 * @sglist: scatter/gather list 3629 * 3630 * Initiate an adapter reset to update the IOA's microcode 3631 * 3632 * Return value: 3633 * 0 on success / -EIO on failure 3634 **/ 3635static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, 3636 struct ipr_sglist *sglist) 3637{ 3638 unsigned long lock_flags; 3639 3640 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3641 while(ioa_cfg->in_reset_reload) { 3642 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3643 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3644 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3645 } 3646 3647 if (ioa_cfg->ucode_sglist) { 3648 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3649 dev_err(&ioa_cfg->pdev->dev, 3650 "Microcode download already in progress\n"); 3651 return -EIO; 3652 } 3653 3654 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist, 3655 sglist->num_sg, DMA_TO_DEVICE); 3656 3657 if (!sglist->num_dma_sg) { 3658 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3659 dev_err(&ioa_cfg->pdev->dev, 3660 "Failed to map microcode download buffer!\n"); 3661 return -EIO; 3662 } 3663 3664 ioa_cfg->ucode_sglist = sglist; 3665 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3666 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3667 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3668 3669 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3670 ioa_cfg->ucode_sglist = NULL; 3671 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3672 return 0; 3673} 3674 3675/** 3676 * ipr_store_update_fw - Update the firmware on the adapter 3677 * @class_dev: device struct 3678 * @buf: buffer 3679 * @count: buffer size 3680 * 3681 * This function will update the firmware on the adapter. 3682 * 3683 * Return value: 3684 * count on success / other on failure 3685 **/ 3686static ssize_t ipr_store_update_fw(struct device *dev, 3687 struct device_attribute *attr, 3688 const char *buf, size_t count) 3689{ 3690 struct Scsi_Host *shost = class_to_shost(dev); 3691 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3692 struct ipr_ucode_image_header *image_hdr; 3693 const struct firmware *fw_entry; 3694 struct ipr_sglist *sglist; 3695 char fname[100]; 3696 char *src; 3697 int len, result, dnld_size; 3698 3699 if (!capable(CAP_SYS_ADMIN)) 3700 return -EACCES; 3701 3702 len = snprintf(fname, 99, "%s", buf); 3703 fname[len-1] = '\0'; 3704 3705 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 3706 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 3707 return -EIO; 3708 } 3709 3710 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 3711 3712 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size || 3713 (ioa_cfg->vpd_cbs->page3_data.card_type && 3714 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) { 3715 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n"); 3716 release_firmware(fw_entry); 3717 return -EINVAL; 3718 } 3719 3720 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 3721 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 3722 sglist = ipr_alloc_ucode_buffer(dnld_size); 3723 3724 if (!sglist) { 3725 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 3726 release_firmware(fw_entry); 3727 return -ENOMEM; 3728 } 3729 3730 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 3731 3732 if (result) { 3733 dev_err(&ioa_cfg->pdev->dev, 3734 "Microcode buffer copy to DMA buffer failed\n"); 3735 goto out; 3736 } 3737 3738 result = ipr_update_ioa_ucode(ioa_cfg, sglist); 3739 3740 if (!result) 3741 result = count; 3742out: 3743 ipr_free_ucode_buffer(sglist); 3744 release_firmware(fw_entry); 3745 return result; 3746} 3747 3748static struct device_attribute ipr_update_fw_attr = { 3749 .attr = { 3750 .name = "update_fw", 3751 .mode = S_IWUSR, 3752 }, 3753 .store = ipr_store_update_fw 3754}; 3755 3756static struct device_attribute *ipr_ioa_attrs[] = { 3757 &ipr_fw_version_attr, 3758 &ipr_log_level_attr, 3759 &ipr_diagnostics_attr, 3760 &ipr_ioa_state_attr, 3761 &ipr_ioa_reset_attr, 3762 &ipr_update_fw_attr, 3763 NULL, 3764}; 3765 3766#ifdef CONFIG_SCSI_IPR_DUMP 3767/** 3768 * ipr_read_dump - Dump the adapter 3769 * @filp: open sysfs file 3770 * @kobj: kobject struct 3771 * @bin_attr: bin_attribute struct 3772 * @buf: buffer 3773 * @off: offset 3774 * @count: buffer size 3775 * 3776 * Return value: 3777 * number of bytes printed to buffer 3778 **/ 3779static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj, 3780 struct bin_attribute *bin_attr, 3781 char *buf, loff_t off, size_t count) 3782{ 3783 struct device *cdev = container_of(kobj, struct device, kobj); 3784 struct Scsi_Host *shost = class_to_shost(cdev); 3785 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3786 struct ipr_dump *dump; 3787 unsigned long lock_flags = 0; 3788 char *src; 3789 int len; 3790 size_t rc = count; 3791 3792 if (!capable(CAP_SYS_ADMIN)) 3793 return -EACCES; 3794 3795 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3796 dump = ioa_cfg->dump; 3797 3798 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 3799 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3800 return 0; 3801 } 3802 kref_get(&dump->kref); 3803 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3804 3805 if (off > dump->driver_dump.hdr.len) { 3806 kref_put(&dump->kref, ipr_release_dump); 3807 return 0; 3808 } 3809 3810 if (off + count > dump->driver_dump.hdr.len) { 3811 count = dump->driver_dump.hdr.len - off; 3812 rc = count; 3813 } 3814 3815 if (count && off < sizeof(dump->driver_dump)) { 3816 if (off + count > sizeof(dump->driver_dump)) 3817 len = sizeof(dump->driver_dump) - off; 3818 else 3819 len = count; 3820 src = (u8 *)&dump->driver_dump + off; 3821 memcpy(buf, src, len); 3822 buf += len; 3823 off += len; 3824 count -= len; 3825 } 3826 3827 off -= sizeof(dump->driver_dump); 3828 3829 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) { 3830 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data)) 3831 len = offsetof(struct ipr_ioa_dump, ioa_data) - off; 3832 else 3833 len = count; 3834 src = (u8 *)&dump->ioa_dump + off; 3835 memcpy(buf, src, len); 3836 buf += len; 3837 off += len; 3838 count -= len; 3839 } 3840 3841 off -= offsetof(struct ipr_ioa_dump, ioa_data); 3842 3843 while (count) { 3844 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 3845 len = PAGE_ALIGN(off) - off; 3846 else 3847 len = count; 3848 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 3849 src += off & ~PAGE_MASK; 3850 memcpy(buf, src, len); 3851 buf += len; 3852 off += len; 3853 count -= len; 3854 } 3855 3856 kref_put(&dump->kref, ipr_release_dump); 3857 return rc; 3858} 3859 3860/** 3861 * ipr_alloc_dump - Prepare for adapter dump 3862 * @ioa_cfg: ioa config struct 3863 * 3864 * Return value: 3865 * 0 on success / other on failure 3866 **/ 3867static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 3868{ 3869 struct ipr_dump *dump; 3870 unsigned long lock_flags = 0; 3871 3872 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); 3873 3874 if (!dump) { 3875 ipr_err("Dump memory allocation failed\n"); 3876 return -ENOMEM; 3877 } 3878 3879 kref_init(&dump->kref); 3880 dump->ioa_cfg = ioa_cfg; 3881 3882 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3883 3884 if (INACTIVE != ioa_cfg->sdt_state) { 3885 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3886 kfree(dump); 3887 return 0; 3888 } 3889 3890 ioa_cfg->dump = dump; 3891 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 3892 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) { 3893 ioa_cfg->dump_taken = 1; 3894 schedule_work(&ioa_cfg->work_q); 3895 } 3896 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3897 3898 return 0; 3899} 3900 3901/** 3902 * ipr_free_dump - Free adapter dump memory 3903 * @ioa_cfg: ioa config struct 3904 * 3905 * Return value: 3906 * 0 on success / other on failure 3907 **/ 3908static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 3909{ 3910 struct ipr_dump *dump; 3911 unsigned long lock_flags = 0; 3912 3913 ENTER; 3914 3915 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3916 dump = ioa_cfg->dump; 3917 if (!dump) { 3918 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3919 return 0; 3920 } 3921 3922 ioa_cfg->dump = NULL; 3923 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3924 3925 kref_put(&dump->kref, ipr_release_dump); 3926 3927 LEAVE; 3928 return 0; 3929} 3930 3931/** 3932 * ipr_write_dump - Setup dump state of adapter 3933 * @filp: open sysfs file 3934 * @kobj: kobject struct 3935 * @bin_attr: bin_attribute struct 3936 * @buf: buffer 3937 * @off: offset 3938 * @count: buffer size 3939 * 3940 * Return value: 3941 * number of bytes printed to buffer 3942 **/ 3943static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj, 3944 struct bin_attribute *bin_attr, 3945 char *buf, loff_t off, size_t count) 3946{ 3947 struct device *cdev = container_of(kobj, struct device, kobj); 3948 struct Scsi_Host *shost = class_to_shost(cdev); 3949 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3950 int rc; 3951 3952 if (!capable(CAP_SYS_ADMIN)) 3953 return -EACCES; 3954 3955 if (buf[0] == '1') 3956 rc = ipr_alloc_dump(ioa_cfg); 3957 else if (buf[0] == '0') 3958 rc = ipr_free_dump(ioa_cfg); 3959 else 3960 return -EINVAL; 3961 3962 if (rc) 3963 return rc; 3964 else 3965 return count; 3966} 3967 3968static struct bin_attribute ipr_dump_attr = { 3969 .attr = { 3970 .name = "dump", 3971 .mode = S_IRUSR | S_IWUSR, 3972 }, 3973 .size = 0, 3974 .read = ipr_read_dump, 3975 .write = ipr_write_dump 3976}; 3977#else 3978static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 3979#endif 3980 3981/** 3982 * ipr_change_queue_depth - Change the device's queue depth 3983 * @sdev: scsi device struct 3984 * @qdepth: depth to set 3985 * @reason: calling context 3986 * 3987 * Return value: 3988 * actual depth set 3989 **/ 3990static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth, 3991 int reason) 3992{ 3993 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3994 struct ipr_resource_entry *res; 3995 unsigned long lock_flags = 0; 3996 3997 if (reason != SCSI_QDEPTH_DEFAULT) 3998 return -EOPNOTSUPP; 3999 4000 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4001 res = (struct ipr_resource_entry *)sdev->hostdata; 4002 4003 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN) 4004 qdepth = IPR_MAX_CMD_PER_ATA_LUN; 4005 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4006 4007 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); 4008 return sdev->queue_depth; 4009} 4010 4011/** 4012 * ipr_change_queue_type - Change the device's queue type 4013 * @dsev: scsi device struct 4014 * @tag_type: type of tags to use 4015 * 4016 * Return value: 4017 * actual queue type set 4018 **/ 4019static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type) 4020{ 4021 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4022 struct ipr_resource_entry *res; 4023 unsigned long lock_flags = 0; 4024 4025 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4026 res = (struct ipr_resource_entry *)sdev->hostdata; 4027 4028 if (res) { 4029 if (ipr_is_gscsi(res) && sdev->tagged_supported) { 4030 /* 4031 * We don't bother quiescing the device here since the 4032 * adapter firmware does it for us. 4033 */ 4034 scsi_set_tag_type(sdev, tag_type); 4035 4036 if (tag_type) 4037 scsi_activate_tcq(sdev, sdev->queue_depth); 4038 else 4039 scsi_deactivate_tcq(sdev, sdev->queue_depth); 4040 } else 4041 tag_type = 0; 4042 } else 4043 tag_type = 0; 4044 4045 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4046 return tag_type; 4047} 4048 4049/** 4050 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 4051 * @dev: device struct 4052 * @buf: buffer 4053 * 4054 * Return value: 4055 * number of bytes printed to buffer 4056 **/ 4057static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) 4058{ 4059 struct scsi_device *sdev = to_scsi_device(dev); 4060 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4061 struct ipr_resource_entry *res; 4062 unsigned long lock_flags = 0; 4063 ssize_t len = -ENXIO; 4064 4065 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4066 res = (struct ipr_resource_entry *)sdev->hostdata; 4067 if (res) 4068 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle); 4069 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4070 return len; 4071} 4072 4073static struct device_attribute ipr_adapter_handle_attr = { 4074 .attr = { 4075 .name = "adapter_handle", 4076 .mode = S_IRUSR, 4077 }, 4078 .show = ipr_show_adapter_handle 4079}; 4080 4081/** 4082 * ipr_show_resource_path - Show the resource path for this device. 4083 * @dev: device struct 4084 * @buf: buffer 4085 * 4086 * Return value: 4087 * number of bytes printed to buffer 4088 **/ 4089static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf) 4090{ 4091 struct scsi_device *sdev = to_scsi_device(dev); 4092 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4093 struct ipr_resource_entry *res; 4094 unsigned long lock_flags = 0; 4095 ssize_t len = -ENXIO; 4096 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4097 4098 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4099 res = (struct ipr_resource_entry *)sdev->hostdata; 4100 if (res) 4101 len = snprintf(buf, PAGE_SIZE, "%s\n", 4102 ipr_format_resource_path(&res->res_path[0], &buffer[0])); 4103 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4104 return len; 4105} 4106 4107static struct device_attribute ipr_resource_path_attr = { 4108 .attr = { 4109 .name = "resource_path", 4110 .mode = S_IRUSR, 4111 }, 4112 .show = ipr_show_resource_path 4113}; 4114 4115static struct device_attribute *ipr_dev_attrs[] = { 4116 &ipr_adapter_handle_attr, 4117 &ipr_resource_path_attr, 4118 NULL, 4119}; 4120 4121/** 4122 * ipr_biosparam - Return the HSC mapping 4123 * @sdev: scsi device struct 4124 * @block_device: block device pointer 4125 * @capacity: capacity of the device 4126 * @parm: Array containing returned HSC values. 4127 * 4128 * This function generates the HSC parms that fdisk uses. 4129 * We want to make sure we return something that places partitions 4130 * on 4k boundaries for best performance with the IOA. 4131 * 4132 * Return value: 4133 * 0 on success 4134 **/ 4135static int ipr_biosparam(struct scsi_device *sdev, 4136 struct block_device *block_device, 4137 sector_t capacity, int *parm) 4138{ 4139 int heads, sectors; 4140 sector_t cylinders; 4141 4142 heads = 128; 4143 sectors = 32; 4144 4145 cylinders = capacity; 4146 sector_div(cylinders, (128 * 32)); 4147 4148 /* return result */ 4149 parm[0] = heads; 4150 parm[1] = sectors; 4151 parm[2] = cylinders; 4152 4153 return 0; 4154} 4155 4156/** 4157 * ipr_find_starget - Find target based on bus/target. 4158 * @starget: scsi target struct 4159 * 4160 * Return value: 4161 * resource entry pointer if found / NULL if not found 4162 **/ 4163static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget) 4164{ 4165 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4166 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4167 struct ipr_resource_entry *res; 4168 4169 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4170 if ((res->bus == starget->channel) && 4171 (res->target == starget->id) && 4172 (res->lun == 0)) { 4173 return res; 4174 } 4175 } 4176 4177 return NULL; 4178} 4179 4180static struct ata_port_info sata_port_info; 4181 4182/** 4183 * ipr_target_alloc - Prepare for commands to a SCSI target 4184 * @starget: scsi target struct 4185 * 4186 * If the device is a SATA device, this function allocates an 4187 * ATA port with libata, else it does nothing. 4188 * 4189 * Return value: 4190 * 0 on success / non-0 on failure 4191 **/ 4192static int ipr_target_alloc(struct scsi_target *starget) 4193{ 4194 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4195 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4196 struct ipr_sata_port *sata_port; 4197 struct ata_port *ap; 4198 struct ipr_resource_entry *res; 4199 unsigned long lock_flags; 4200 4201 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4202 res = ipr_find_starget(starget); 4203 starget->hostdata = NULL; 4204 4205 if (res && ipr_is_gata(res)) { 4206 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4207 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL); 4208 if (!sata_port) 4209 return -ENOMEM; 4210 4211 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost); 4212 if (ap) { 4213 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4214 sata_port->ioa_cfg = ioa_cfg; 4215 sata_port->ap = ap; 4216 sata_port->res = res; 4217 4218 res->sata_port = sata_port; 4219 ap->private_data = sata_port; 4220 starget->hostdata = sata_port; 4221 } else { 4222 kfree(sata_port); 4223 return -ENOMEM; 4224 } 4225 } 4226 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4227 4228 return 0; 4229} 4230 4231/** 4232 * ipr_target_destroy - Destroy a SCSI target 4233 * @starget: scsi target struct 4234 * 4235 * If the device was a SATA device, this function frees the libata 4236 * ATA port, else it does nothing. 4237 * 4238 **/ 4239static void ipr_target_destroy(struct scsi_target *starget) 4240{ 4241 struct ipr_sata_port *sata_port = starget->hostdata; 4242 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4243 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4244 4245 if (ioa_cfg->sis64) { 4246 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS) 4247 clear_bit(starget->id, ioa_cfg->array_ids); 4248 else if (starget->channel == IPR_VSET_VIRTUAL_BUS) 4249 clear_bit(starget->id, ioa_cfg->vset_ids); 4250 else if (starget->channel == 0) 4251 clear_bit(starget->id, ioa_cfg->target_ids); 4252 } 4253 4254 if (sata_port) { 4255 starget->hostdata = NULL; 4256 ata_sas_port_destroy(sata_port->ap); 4257 kfree(sata_port); 4258 } 4259} 4260 4261/** 4262 * ipr_find_sdev - Find device based on bus/target/lun. 4263 * @sdev: scsi device struct 4264 * 4265 * Return value: 4266 * resource entry pointer if found / NULL if not found 4267 **/ 4268static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev) 4269{ 4270 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4271 struct ipr_resource_entry *res; 4272 4273 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4274 if ((res->bus == sdev->channel) && 4275 (res->target == sdev->id) && 4276 (res->lun == sdev->lun)) 4277 return res; 4278 } 4279 4280 return NULL; 4281} 4282 4283/** 4284 * ipr_slave_destroy - Unconfigure a SCSI device 4285 * @sdev: scsi device struct 4286 * 4287 * Return value: 4288 * nothing 4289 **/ 4290static void ipr_slave_destroy(struct scsi_device *sdev) 4291{ 4292 struct ipr_resource_entry *res; 4293 struct ipr_ioa_cfg *ioa_cfg; 4294 unsigned long lock_flags = 0; 4295 4296 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4297 4298 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4299 res = (struct ipr_resource_entry *) sdev->hostdata; 4300 if (res) { 4301 if (res->sata_port) 4302 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE; 4303 sdev->hostdata = NULL; 4304 res->sdev = NULL; 4305 res->sata_port = NULL; 4306 } 4307 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4308} 4309 4310/** 4311 * ipr_slave_configure - Configure a SCSI device 4312 * @sdev: scsi device struct 4313 * 4314 * This function configures the specified scsi device. 4315 * 4316 * Return value: 4317 * 0 on success 4318 **/ 4319static int ipr_slave_configure(struct scsi_device *sdev) 4320{ 4321 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4322 struct ipr_resource_entry *res; 4323 struct ata_port *ap = NULL; 4324 unsigned long lock_flags = 0; 4325 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4326 4327 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4328 res = sdev->hostdata; 4329 if (res) { 4330 if (ipr_is_af_dasd_device(res)) 4331 sdev->type = TYPE_RAID; 4332 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { 4333 sdev->scsi_level = 4; 4334 sdev->no_uld_attach = 1; 4335 } 4336 if (ipr_is_vset_device(res)) { 4337 blk_queue_rq_timeout(sdev->request_queue, 4338 IPR_VSET_RW_TIMEOUT); 4339 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); 4340 } 4341 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)) 4342 sdev->allow_restart = 1; 4343 if (ipr_is_gata(res) && res->sata_port) 4344 ap = res->sata_port->ap; 4345 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4346 4347 if (ap) { 4348 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN); 4349 ata_sas_slave_configure(sdev, ap); 4350 } else 4351 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); 4352 if (ioa_cfg->sis64) 4353 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n", 4354 ipr_format_resource_path(&res->res_path[0], &buffer[0])); 4355 return 0; 4356 } 4357 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4358 return 0; 4359} 4360 4361/** 4362 * ipr_ata_slave_alloc - Prepare for commands to a SATA device 4363 * @sdev: scsi device struct 4364 * 4365 * This function initializes an ATA port so that future commands 4366 * sent through queuecommand will work. 4367 * 4368 * Return value: 4369 * 0 on success 4370 **/ 4371static int ipr_ata_slave_alloc(struct scsi_device *sdev) 4372{ 4373 struct ipr_sata_port *sata_port = NULL; 4374 int rc = -ENXIO; 4375 4376 ENTER; 4377 if (sdev->sdev_target) 4378 sata_port = sdev->sdev_target->hostdata; 4379 if (sata_port) 4380 rc = ata_sas_port_init(sata_port->ap); 4381 if (rc) 4382 ipr_slave_destroy(sdev); 4383 4384 LEAVE; 4385 return rc; 4386} 4387 4388/** 4389 * ipr_slave_alloc - Prepare for commands to a device. 4390 * @sdev: scsi device struct 4391 * 4392 * This function saves a pointer to the resource entry 4393 * in the scsi device struct if the device exists. We 4394 * can then use this pointer in ipr_queuecommand when 4395 * handling new commands. 4396 * 4397 * Return value: 4398 * 0 on success / -ENXIO if device does not exist 4399 **/ 4400static int ipr_slave_alloc(struct scsi_device *sdev) 4401{ 4402 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4403 struct ipr_resource_entry *res; 4404 unsigned long lock_flags; 4405 int rc = -ENXIO; 4406 4407 sdev->hostdata = NULL; 4408 4409 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4410 4411 res = ipr_find_sdev(sdev); 4412 if (res) { 4413 res->sdev = sdev; 4414 res->add_to_ml = 0; 4415 res->in_erp = 0; 4416 sdev->hostdata = res; 4417 if (!ipr_is_naca_model(res)) 4418 res->needs_sync_complete = 1; 4419 rc = 0; 4420 if (ipr_is_gata(res)) { 4421 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4422 return ipr_ata_slave_alloc(sdev); 4423 } 4424 } 4425 4426 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4427 4428 return rc; 4429} 4430 4431/** 4432 * ipr_eh_host_reset - Reset the host adapter 4433 * @scsi_cmd: scsi command struct 4434 * 4435 * Return value: 4436 * SUCCESS / FAILED 4437 **/ 4438static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd) 4439{ 4440 struct ipr_ioa_cfg *ioa_cfg; 4441 int rc; 4442 4443 ENTER; 4444 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 4445 4446 dev_err(&ioa_cfg->pdev->dev, 4447 "Adapter being reset as a result of error recovery.\n"); 4448 4449 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4450 ioa_cfg->sdt_state = GET_DUMP; 4451 4452 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV); 4453 4454 LEAVE; 4455 return rc; 4456} 4457 4458static int ipr_eh_host_reset(struct scsi_cmnd * cmd) 4459{ 4460 int rc; 4461 4462 spin_lock_irq(cmd->device->host->host_lock); 4463 rc = __ipr_eh_host_reset(cmd); 4464 spin_unlock_irq(cmd->device->host->host_lock); 4465 4466 return rc; 4467} 4468 4469/** 4470 * ipr_device_reset - Reset the device 4471 * @ioa_cfg: ioa config struct 4472 * @res: resource entry struct 4473 * 4474 * This function issues a device reset to the affected device. 4475 * If the device is a SCSI device, a LUN reset will be sent 4476 * to the device first. If that does not work, a target reset 4477 * will be sent. If the device is a SATA device, a PHY reset will 4478 * be sent. 4479 * 4480 * Return value: 4481 * 0 on success / non-zero on failure 4482 **/ 4483static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, 4484 struct ipr_resource_entry *res) 4485{ 4486 struct ipr_cmnd *ipr_cmd; 4487 struct ipr_ioarcb *ioarcb; 4488 struct ipr_cmd_pkt *cmd_pkt; 4489 struct ipr_ioarcb_ata_regs *regs; 4490 u32 ioasc; 4491 4492 ENTER; 4493 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4494 ioarcb = &ipr_cmd->ioarcb; 4495 cmd_pkt = &ioarcb->cmd_pkt; 4496 4497 if (ipr_cmd->ioa_cfg->sis64) { 4498 regs = &ipr_cmd->i.ata_ioadl.regs; 4499 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb)); 4500 } else 4501 regs = &ioarcb->u.add_data.u.regs; 4502 4503 ioarcb->res_handle = res->res_handle; 4504 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4505 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 4506 if (ipr_is_gata(res)) { 4507 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET; 4508 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags)); 4509 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 4510 } 4511 4512 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 4513 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 4514 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4515 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) { 4516 if (ipr_cmd->ioa_cfg->sis64) 4517 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata, 4518 sizeof(struct ipr_ioasa_gata)); 4519 else 4520 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata, 4521 sizeof(struct ipr_ioasa_gata)); 4522 } 4523 4524 LEAVE; 4525 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0); 4526} 4527 4528/** 4529 * ipr_sata_reset - Reset the SATA port 4530 * @link: SATA link to reset 4531 * @classes: class of the attached device 4532 * 4533 * This function issues a SATA phy reset to the affected ATA link. 4534 * 4535 * Return value: 4536 * 0 on success / non-zero on failure 4537 **/ 4538static int ipr_sata_reset(struct ata_link *link, unsigned int *classes, 4539 unsigned long deadline) 4540{ 4541 struct ipr_sata_port *sata_port = link->ap->private_data; 4542 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 4543 struct ipr_resource_entry *res; 4544 unsigned long lock_flags = 0; 4545 int rc = -ENXIO; 4546 4547 ENTER; 4548 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4549 while(ioa_cfg->in_reset_reload) { 4550 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4551 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4552 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4553 } 4554 4555 res = sata_port->res; 4556 if (res) { 4557 rc = ipr_device_reset(ioa_cfg, res); 4558 *classes = res->ata_class; 4559 } 4560 4561 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4562 LEAVE; 4563 return rc; 4564} 4565 4566/** 4567 * ipr_eh_dev_reset - Reset the device 4568 * @scsi_cmd: scsi command struct 4569 * 4570 * This function issues a device reset to the affected device. 4571 * A LUN reset will be sent to the device first. If that does 4572 * not work, a target reset will be sent. 4573 * 4574 * Return value: 4575 * SUCCESS / FAILED 4576 **/ 4577static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) 4578{ 4579 struct ipr_cmnd *ipr_cmd; 4580 struct ipr_ioa_cfg *ioa_cfg; 4581 struct ipr_resource_entry *res; 4582 struct ata_port *ap; 4583 int rc = 0; 4584 4585 ENTER; 4586 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 4587 res = scsi_cmd->device->hostdata; 4588 4589 if (!res) 4590 return FAILED; 4591 4592 /* 4593 * If we are currently going through reset/reload, return failed. This will force the 4594 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 4595 * reset to complete 4596 */ 4597 if (ioa_cfg->in_reset_reload) 4598 return FAILED; 4599 if (ioa_cfg->ioa_is_dead) 4600 return FAILED; 4601 4602 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4603 if (ipr_cmd->ioarcb.res_handle == res->res_handle) { 4604 if (ipr_cmd->scsi_cmd) 4605 ipr_cmd->done = ipr_scsi_eh_done; 4606 if (ipr_cmd->qc) 4607 ipr_cmd->done = ipr_sata_eh_done; 4608 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) { 4609 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT; 4610 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED; 4611 } 4612 } 4613 } 4614 4615 res->resetting_device = 1; 4616 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); 4617 4618 if (ipr_is_gata(res) && res->sata_port) { 4619 ap = res->sata_port->ap; 4620 spin_unlock_irq(scsi_cmd->device->host->host_lock); 4621 ata_std_error_handler(ap); 4622 spin_lock_irq(scsi_cmd->device->host->host_lock); 4623 4624 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4625 if (ipr_cmd->ioarcb.res_handle == res->res_handle) { 4626 rc = -EIO; 4627 break; 4628 } 4629 } 4630 } else 4631 rc = ipr_device_reset(ioa_cfg, res); 4632 res->resetting_device = 0; 4633 4634 LEAVE; 4635 return (rc ? FAILED : SUCCESS); 4636} 4637 4638static int ipr_eh_dev_reset(struct scsi_cmnd * cmd) 4639{ 4640 int rc; 4641 4642 spin_lock_irq(cmd->device->host->host_lock); 4643 rc = __ipr_eh_dev_reset(cmd); 4644 spin_unlock_irq(cmd->device->host->host_lock); 4645 4646 return rc; 4647} 4648 4649/** 4650 * ipr_bus_reset_done - Op done function for bus reset. 4651 * @ipr_cmd: ipr command struct 4652 * 4653 * This function is the op done function for a bus reset 4654 * 4655 * Return value: 4656 * none 4657 **/ 4658static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 4659{ 4660 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4661 struct ipr_resource_entry *res; 4662 4663 ENTER; 4664 if (!ioa_cfg->sis64) 4665 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4666 if (res->res_handle == ipr_cmd->ioarcb.res_handle) { 4667 scsi_report_bus_reset(ioa_cfg->host, res->bus); 4668 break; 4669 } 4670 } 4671 4672 /* 4673 * If abort has not completed, indicate the reset has, else call the 4674 * abort's done function to wake the sleeping eh thread 4675 */ 4676 if (ipr_cmd->sibling->sibling) 4677 ipr_cmd->sibling->sibling = NULL; 4678 else 4679 ipr_cmd->sibling->done(ipr_cmd->sibling); 4680 4681 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4682 LEAVE; 4683} 4684 4685/** 4686 * ipr_abort_timeout - An abort task has timed out 4687 * @ipr_cmd: ipr command struct 4688 * 4689 * This function handles when an abort task times out. If this 4690 * happens we issue a bus reset since we have resources tied 4691 * up that must be freed before returning to the midlayer. 4692 * 4693 * Return value: 4694 * none 4695 **/ 4696static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 4697{ 4698 struct ipr_cmnd *reset_cmd; 4699 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4700 struct ipr_cmd_pkt *cmd_pkt; 4701 unsigned long lock_flags = 0; 4702 4703 ENTER; 4704 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4705 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 4706 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4707 return; 4708 } 4709 4710 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n"); 4711 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4712 ipr_cmd->sibling = reset_cmd; 4713 reset_cmd->sibling = ipr_cmd; 4714 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 4715 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 4716 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4717 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 4718 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 4719 4720 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 4721 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4722 LEAVE; 4723} 4724 4725/** 4726 * ipr_cancel_op - Cancel specified op 4727 * @scsi_cmd: scsi command struct 4728 * 4729 * This function cancels specified op. 4730 * 4731 * Return value: 4732 * SUCCESS / FAILED 4733 **/ 4734static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) 4735{ 4736 struct ipr_cmnd *ipr_cmd; 4737 struct ipr_ioa_cfg *ioa_cfg; 4738 struct ipr_resource_entry *res; 4739 struct ipr_cmd_pkt *cmd_pkt; 4740 u32 ioasc; 4741 int op_found = 0; 4742 4743 ENTER; 4744 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 4745 res = scsi_cmd->device->hostdata; 4746 4747 /* If we are currently going through reset/reload, return failed. 4748 * This will force the mid-layer to call ipr_eh_host_reset, 4749 * which will then go to sleep and wait for the reset to complete 4750 */ 4751 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) 4752 return FAILED; 4753 if (!res || !ipr_is_gscsi(res)) 4754 return FAILED; 4755 4756 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4757 if (ipr_cmd->scsi_cmd == scsi_cmd) { 4758 ipr_cmd->done = ipr_scsi_eh_done; 4759 op_found = 1; 4760 break; 4761 } 4762 } 4763 4764 if (!op_found) 4765 return SUCCESS; 4766 4767 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4768 ipr_cmd->ioarcb.res_handle = res->res_handle; 4769 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4770 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4771 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4772 ipr_cmd->u.sdev = scsi_cmd->device; 4773 4774 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n", 4775 scsi_cmd->cmnd[0]); 4776 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 4777 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 4778 4779 /* 4780 * If the abort task timed out and we sent a bus reset, we will get 4781 * one the following responses to the abort 4782 */ 4783 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 4784 ioasc = 0; 4785 ipr_trace; 4786 } 4787 4788 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4789 if (!ipr_is_naca_model(res)) 4790 res->needs_sync_complete = 1; 4791 4792 LEAVE; 4793 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); 4794} 4795 4796/** 4797 * ipr_eh_abort - Abort a single op 4798 * @scsi_cmd: scsi command struct 4799 * 4800 * Return value: 4801 * SUCCESS / FAILED 4802 **/ 4803static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) 4804{ 4805 unsigned long flags; 4806 int rc; 4807 4808 ENTER; 4809 4810 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 4811 rc = ipr_cancel_op(scsi_cmd); 4812 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 4813 4814 LEAVE; 4815 return rc; 4816} 4817 4818/** 4819 * ipr_handle_other_interrupt - Handle "other" interrupts 4820 * @ioa_cfg: ioa config struct 4821 * 4822 * Return value: 4823 * IRQ_NONE / IRQ_HANDLED 4824 **/ 4825static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg) 4826{ 4827 irqreturn_t rc = IRQ_HANDLED; 4828 volatile u32 int_reg, int_mask_reg; 4829 4830 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 4831 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32) & ~int_mask_reg; 4832 4833 /* If an interrupt on the adapter did not occur, ignore it. 4834 * Or in the case of SIS 64, check for a stage change interrupt. 4835 */ 4836 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) { 4837 if (ioa_cfg->sis64) { 4838 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 4839 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 4840 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) { 4841 4842 /* clear stage change */ 4843 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg); 4844 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 4845 list_del(&ioa_cfg->reset_cmd->queue); 4846 del_timer(&ioa_cfg->reset_cmd->timer); 4847 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 4848 return IRQ_HANDLED; 4849 } 4850 } 4851 4852 return IRQ_NONE; 4853 } 4854 4855 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 4856 /* Mask the interrupt */ 4857 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 4858 4859 /* Clear the interrupt */ 4860 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); 4861 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 4862 4863 list_del(&ioa_cfg->reset_cmd->queue); 4864 del_timer(&ioa_cfg->reset_cmd->timer); 4865 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 4866 } else { 4867 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 4868 ioa_cfg->ioa_unit_checked = 1; 4869 else 4870 dev_err(&ioa_cfg->pdev->dev, 4871 "Permanent IOA failure. 0x%08X\n", int_reg); 4872 4873 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4874 ioa_cfg->sdt_state = GET_DUMP; 4875 4876 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 4877 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4878 } 4879 4880 return rc; 4881} 4882 4883/** 4884 * ipr_isr_eh - Interrupt service routine error handler 4885 * @ioa_cfg: ioa config struct 4886 * @msg: message to log 4887 * 4888 * Return value: 4889 * none 4890 **/ 4891static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg) 4892{ 4893 ioa_cfg->errors_logged++; 4894 dev_err(&ioa_cfg->pdev->dev, "%s\n", msg); 4895 4896 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4897 ioa_cfg->sdt_state = GET_DUMP; 4898 4899 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4900} 4901 4902/** 4903 * ipr_isr - Interrupt service routine 4904 * @irq: irq number 4905 * @devp: pointer to ioa config struct 4906 * 4907 * Return value: 4908 * IRQ_NONE / IRQ_HANDLED 4909 **/ 4910static irqreturn_t ipr_isr(int irq, void *devp) 4911{ 4912 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 4913 unsigned long lock_flags = 0; 4914 volatile u32 int_reg; 4915 u32 ioasc; 4916 u16 cmd_index; 4917 int num_hrrq = 0; 4918 struct ipr_cmnd *ipr_cmd; 4919 irqreturn_t rc = IRQ_NONE; 4920 4921 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4922 4923 /* If interrupts are disabled, ignore the interrupt */ 4924 if (!ioa_cfg->allow_interrupts) { 4925 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4926 return IRQ_NONE; 4927 } 4928 4929 while (1) { 4930 ipr_cmd = NULL; 4931 4932 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 4933 ioa_cfg->toggle_bit) { 4934 4935 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & 4936 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 4937 4938 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { 4939 ipr_isr_eh(ioa_cfg, "Invalid response handle from IOA"); 4940 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4941 return IRQ_HANDLED; 4942 } 4943 4944 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 4945 4946 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 4947 4948 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 4949 4950 list_del(&ipr_cmd->queue); 4951 del_timer(&ipr_cmd->timer); 4952 ipr_cmd->done(ipr_cmd); 4953 4954 rc = IRQ_HANDLED; 4955 4956 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { 4957 ioa_cfg->hrrq_curr++; 4958 } else { 4959 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 4960 ioa_cfg->toggle_bit ^= 1u; 4961 } 4962 } 4963 4964 if (ipr_cmd != NULL) { 4965 /* Clear the PCI interrupt */ 4966 do { 4967 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32); 4968 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 4969 } while (int_reg & IPR_PCII_HRRQ_UPDATED && 4970 num_hrrq++ < IPR_MAX_HRRQ_RETRIES); 4971 4972 if (int_reg & IPR_PCII_HRRQ_UPDATED) { 4973 ipr_isr_eh(ioa_cfg, "Error clearing HRRQ"); 4974 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4975 return IRQ_HANDLED; 4976 } 4977 4978 } else 4979 break; 4980 } 4981 4982 if (unlikely(rc == IRQ_NONE)) 4983 rc = ipr_handle_other_interrupt(ioa_cfg); 4984 4985 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4986 return rc; 4987} 4988 4989/** 4990 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer 4991 * @ioa_cfg: ioa config struct 4992 * @ipr_cmd: ipr command struct 4993 * 4994 * Return value: 4995 * 0 on success / -1 on failure 4996 **/ 4997static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg, 4998 struct ipr_cmnd *ipr_cmd) 4999{ 5000 int i, nseg; 5001 struct scatterlist *sg; 5002 u32 length; 5003 u32 ioadl_flags = 0; 5004 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5005 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5006 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 5007 5008 length = scsi_bufflen(scsi_cmd); 5009 if (!length) 5010 return 0; 5011 5012 nseg = scsi_dma_map(scsi_cmd); 5013 if (nseg < 0) { 5014 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 5015 return -1; 5016 } 5017 5018 ipr_cmd->dma_use_sg = nseg; 5019 5020 ioarcb->data_transfer_length = cpu_to_be32(length); 5021 ioarcb->ioadl_len = 5022 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 5023 5024 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 5025 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5026 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5027 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) 5028 ioadl_flags = IPR_IOADL_FLAGS_READ; 5029 5030 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 5031 ioadl64[i].flags = cpu_to_be32(ioadl_flags); 5032 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg)); 5033 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg)); 5034 } 5035 5036 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5037 return 0; 5038} 5039 5040/** 5041 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 5042 * @ioa_cfg: ioa config struct 5043 * @ipr_cmd: ipr command struct 5044 * 5045 * Return value: 5046 * 0 on success / -1 on failure 5047 **/ 5048static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 5049 struct ipr_cmnd *ipr_cmd) 5050{ 5051 int i, nseg; 5052 struct scatterlist *sg; 5053 u32 length; 5054 u32 ioadl_flags = 0; 5055 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5056 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5057 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 5058 5059 length = scsi_bufflen(scsi_cmd); 5060 if (!length) 5061 return 0; 5062 5063 nseg = scsi_dma_map(scsi_cmd); 5064 if (nseg < 0) { 5065 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 5066 return -1; 5067 } 5068 5069 ipr_cmd->dma_use_sg = nseg; 5070 5071 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 5072 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5073 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5074 ioarcb->data_transfer_length = cpu_to_be32(length); 5075 ioarcb->ioadl_len = 5076 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5077 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 5078 ioadl_flags = IPR_IOADL_FLAGS_READ; 5079 ioarcb->read_data_transfer_length = cpu_to_be32(length); 5080 ioarcb->read_ioadl_len = 5081 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5082 } 5083 5084 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) { 5085 ioadl = ioarcb->u.add_data.u.ioadl; 5086 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) + 5087 offsetof(struct ipr_ioarcb, u.add_data)); 5088 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 5089 } 5090 5091 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 5092 ioadl[i].flags_and_data_len = 5093 cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 5094 ioadl[i].address = cpu_to_be32(sg_dma_address(sg)); 5095 } 5096 5097 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5098 return 0; 5099} 5100 5101/** 5102 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes 5103 * @scsi_cmd: scsi command struct 5104 * 5105 * Return value: 5106 * task attributes 5107 **/ 5108static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) 5109{ 5110 u8 tag[2]; 5111 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; 5112 5113 if (scsi_populate_tag_msg(scsi_cmd, tag)) { 5114 switch (tag[0]) { 5115 case MSG_SIMPLE_TAG: 5116 rc = IPR_FLAGS_LO_SIMPLE_TASK; 5117 break; 5118 case MSG_HEAD_TAG: 5119 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; 5120 break; 5121 case MSG_ORDERED_TAG: 5122 rc = IPR_FLAGS_LO_ORDERED_TASK; 5123 break; 5124 }; 5125 } 5126 5127 return rc; 5128} 5129 5130/** 5131 * ipr_erp_done - Process completion of ERP for a device 5132 * @ipr_cmd: ipr command struct 5133 * 5134 * This function copies the sense buffer into the scsi_cmd 5135 * struct and pushes the scsi_done function. 5136 * 5137 * Return value: 5138 * nothing 5139 **/ 5140static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 5141{ 5142 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5143 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 5144 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5145 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5146 5147 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 5148 scsi_cmd->result |= (DID_ERROR << 16); 5149 scmd_printk(KERN_ERR, scsi_cmd, 5150 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 5151 } else { 5152 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 5153 SCSI_SENSE_BUFFERSIZE); 5154 } 5155 5156 if (res) { 5157 if (!ipr_is_naca_model(res)) 5158 res->needs_sync_complete = 1; 5159 res->in_erp = 0; 5160 } 5161 scsi_dma_unmap(ipr_cmd->scsi_cmd); 5162 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5163 scsi_cmd->scsi_done(scsi_cmd); 5164} 5165 5166/** 5167 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 5168 * @ipr_cmd: ipr command struct 5169 * 5170 * Return value: 5171 * none 5172 **/ 5173static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 5174{ 5175 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5176 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5177 dma_addr_t dma_addr = ipr_cmd->dma_addr; 5178 5179 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 5180 ioarcb->data_transfer_length = 0; 5181 ioarcb->read_data_transfer_length = 0; 5182 ioarcb->ioadl_len = 0; 5183 ioarcb->read_ioadl_len = 0; 5184 ioasa->hdr.ioasc = 0; 5185 ioasa->hdr.residual_data_len = 0; 5186 5187 if (ipr_cmd->ioa_cfg->sis64) 5188 ioarcb->u.sis64_addr_data.data_ioadl_addr = 5189 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 5190 else { 5191 ioarcb->write_ioadl_addr = 5192 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 5193 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 5194 } 5195} 5196 5197/** 5198 * ipr_erp_request_sense - Send request sense to a device 5199 * @ipr_cmd: ipr command struct 5200 * 5201 * This function sends a request sense to a device as a result 5202 * of a check condition. 5203 * 5204 * Return value: 5205 * nothing 5206 **/ 5207static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 5208{ 5209 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 5210 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5211 5212 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 5213 ipr_erp_done(ipr_cmd); 5214 return; 5215 } 5216 5217 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 5218 5219 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 5220 cmd_pkt->cdb[0] = REQUEST_SENSE; 5221 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 5222 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 5223 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 5224 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 5225 5226 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma, 5227 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST); 5228 5229 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 5230 IPR_REQUEST_SENSE_TIMEOUT * 2); 5231} 5232 5233/** 5234 * ipr_erp_cancel_all - Send cancel all to a device 5235 * @ipr_cmd: ipr command struct 5236 * 5237 * This function sends a cancel all to a device to clear the 5238 * queue. If we are running TCQ on the device, QERR is set to 1, 5239 * which means all outstanding ops have been dropped on the floor. 5240 * Cancel all will return them to us. 5241 * 5242 * Return value: 5243 * nothing 5244 **/ 5245static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 5246{ 5247 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5248 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 5249 struct ipr_cmd_pkt *cmd_pkt; 5250 5251 res->in_erp = 1; 5252 5253 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 5254 5255 if (!scsi_get_tag_type(scsi_cmd->device)) { 5256 ipr_erp_request_sense(ipr_cmd); 5257 return; 5258 } 5259 5260 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 5261 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5262 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 5263 5264 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 5265 IPR_CANCEL_ALL_TIMEOUT); 5266} 5267 5268/** 5269 * ipr_dump_ioasa - Dump contents of IOASA 5270 * @ioa_cfg: ioa config struct 5271 * @ipr_cmd: ipr command struct 5272 * @res: resource entry struct 5273 * 5274 * This function is invoked by the interrupt handler when ops 5275 * fail. It will log the IOASA if appropriate. Only called 5276 * for GPDD ops. 5277 * 5278 * Return value: 5279 * none 5280 **/ 5281static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 5282 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res) 5283{ 5284 int i; 5285 u16 data_len; 5286 u32 ioasc, fd_ioasc; 5287 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5288 __be32 *ioasa_data = (__be32 *)ioasa; 5289 int error_index; 5290 5291 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK; 5292 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK; 5293 5294 if (0 == ioasc) 5295 return; 5296 5297 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 5298 return; 5299 5300 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc) 5301 error_index = ipr_get_error(fd_ioasc); 5302 else 5303 error_index = ipr_get_error(ioasc); 5304 5305 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 5306 /* Don't log an error if the IOA already logged one */ 5307 if (ioasa->hdr.ilid != 0) 5308 return; 5309 5310 if (!ipr_is_gscsi(res)) 5311 return; 5312 5313 if (ipr_error_table[error_index].log_ioasa == 0) 5314 return; 5315 } 5316 5317 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error); 5318 5319 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len); 5320 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len) 5321 data_len = sizeof(struct ipr_ioasa64); 5322 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len) 5323 data_len = sizeof(struct ipr_ioasa); 5324 5325 ipr_err("IOASA Dump:\n"); 5326 5327 for (i = 0; i < data_len / 4; i += 4) { 5328 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 5329 be32_to_cpu(ioasa_data[i]), 5330 be32_to_cpu(ioasa_data[i+1]), 5331 be32_to_cpu(ioasa_data[i+2]), 5332 be32_to_cpu(ioasa_data[i+3])); 5333 } 5334} 5335 5336/** 5337 * ipr_gen_sense - Generate SCSI sense data from an IOASA 5338 * @ioasa: IOASA 5339 * @sense_buf: sense data buffer 5340 * 5341 * Return value: 5342 * none 5343 **/ 5344static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 5345{ 5346 u32 failing_lba; 5347 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 5348 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 5349 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5350 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc); 5351 5352 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 5353 5354 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 5355 return; 5356 5357 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 5358 5359 if (ipr_is_vset_device(res) && 5360 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 5361 ioasa->u.vset.failing_lba_hi != 0) { 5362 sense_buf[0] = 0x72; 5363 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 5364 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 5365 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 5366 5367 sense_buf[7] = 12; 5368 sense_buf[8] = 0; 5369 sense_buf[9] = 0x0A; 5370 sense_buf[10] = 0x80; 5371 5372 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 5373 5374 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 5375 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 5376 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 5377 sense_buf[15] = failing_lba & 0x000000ff; 5378 5379 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 5380 5381 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 5382 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 5383 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 5384 sense_buf[19] = failing_lba & 0x000000ff; 5385 } else { 5386 sense_buf[0] = 0x70; 5387 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 5388 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 5389 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 5390 5391 /* Illegal request */ 5392 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 5393 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 5394 sense_buf[7] = 10; /* additional length */ 5395 5396 /* IOARCB was in error */ 5397 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 5398 sense_buf[15] = 0xC0; 5399 else /* Parameter data was invalid */ 5400 sense_buf[15] = 0x80; 5401 5402 sense_buf[16] = 5403 ((IPR_FIELD_POINTER_MASK & 5404 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff; 5405 sense_buf[17] = 5406 (IPR_FIELD_POINTER_MASK & 5407 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff; 5408 } else { 5409 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 5410 if (ipr_is_vset_device(res)) 5411 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 5412 else 5413 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 5414 5415 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 5416 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 5417 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 5418 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 5419 sense_buf[6] = failing_lba & 0x000000ff; 5420 } 5421 5422 sense_buf[7] = 6; /* additional length */ 5423 } 5424 } 5425} 5426 5427/** 5428 * ipr_get_autosense - Copy autosense data to sense buffer 5429 * @ipr_cmd: ipr command struct 5430 * 5431 * This function copies the autosense buffer to the buffer 5432 * in the scsi_cmd, if there is autosense available. 5433 * 5434 * Return value: 5435 * 1 if autosense was available / 0 if not 5436 **/ 5437static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) 5438{ 5439 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5440 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64; 5441 5442 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0) 5443 return 0; 5444 5445 if (ipr_cmd->ioa_cfg->sis64) 5446 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data, 5447 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len), 5448 SCSI_SENSE_BUFFERSIZE)); 5449 else 5450 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, 5451 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), 5452 SCSI_SENSE_BUFFERSIZE)); 5453 return 1; 5454} 5455 5456/** 5457 * ipr_erp_start - Process an error response for a SCSI op 5458 * @ioa_cfg: ioa config struct 5459 * @ipr_cmd: ipr command struct 5460 * 5461 * This function determines whether or not to initiate ERP 5462 * on the affected device. 5463 * 5464 * Return value: 5465 * nothing 5466 **/ 5467static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 5468 struct ipr_cmnd *ipr_cmd) 5469{ 5470 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5471 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 5472 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5473 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK; 5474 5475 if (!res) { 5476 ipr_scsi_eh_done(ipr_cmd); 5477 return; 5478 } 5479 5480 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS) 5481 ipr_gen_sense(ipr_cmd); 5482 5483 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 5484 5485 switch (masked_ioasc) { 5486 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 5487 if (ipr_is_naca_model(res)) 5488 scsi_cmd->result |= (DID_ABORT << 16); 5489 else 5490 scsi_cmd->result |= (DID_IMM_RETRY << 16); 5491 break; 5492 case IPR_IOASC_IR_RESOURCE_HANDLE: 5493 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: 5494 scsi_cmd->result |= (DID_NO_CONNECT << 16); 5495 break; 5496 case IPR_IOASC_HW_SEL_TIMEOUT: 5497 scsi_cmd->result |= (DID_NO_CONNECT << 16); 5498 if (!ipr_is_naca_model(res)) 5499 res->needs_sync_complete = 1; 5500 break; 5501 case IPR_IOASC_SYNC_REQUIRED: 5502 if (!res->in_erp) 5503 res->needs_sync_complete = 1; 5504 scsi_cmd->result |= (DID_IMM_RETRY << 16); 5505 break; 5506 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 5507 case IPR_IOASA_IR_DUAL_IOA_DISABLED: 5508 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 5509 break; 5510 case IPR_IOASC_BUS_WAS_RESET: 5511 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 5512 /* 5513 * Report the bus reset and ask for a retry. The device 5514 * will give CC/UA the next command. 5515 */ 5516 if (!res->resetting_device) 5517 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 5518 scsi_cmd->result |= (DID_ERROR << 16); 5519 if (!ipr_is_naca_model(res)) 5520 res->needs_sync_complete = 1; 5521 break; 5522 case IPR_IOASC_HW_DEV_BUS_STATUS: 5523 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 5524 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 5525 if (!ipr_get_autosense(ipr_cmd)) { 5526 if (!ipr_is_naca_model(res)) { 5527 ipr_erp_cancel_all(ipr_cmd); 5528 return; 5529 } 5530 } 5531 } 5532 if (!ipr_is_naca_model(res)) 5533 res->needs_sync_complete = 1; 5534 break; 5535 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 5536 break; 5537 default: 5538 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 5539 scsi_cmd->result |= (DID_ERROR << 16); 5540 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) 5541 res->needs_sync_complete = 1; 5542 break; 5543 } 5544 5545 scsi_dma_unmap(ipr_cmd->scsi_cmd); 5546 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5547 scsi_cmd->scsi_done(scsi_cmd); 5548} 5549 5550/** 5551 * ipr_scsi_done - mid-layer done function 5552 * @ipr_cmd: ipr command struct 5553 * 5554 * This function is invoked by the interrupt handler for 5555 * ops generated by the SCSI mid-layer 5556 * 5557 * Return value: 5558 * none 5559 **/ 5560static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 5561{ 5562 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5563 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5564 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5565 5566 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len)); 5567 5568 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 5569 scsi_dma_unmap(ipr_cmd->scsi_cmd); 5570 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5571 scsi_cmd->scsi_done(scsi_cmd); 5572 } else 5573 ipr_erp_start(ioa_cfg, ipr_cmd); 5574} 5575 5576/** 5577 * ipr_queuecommand - Queue a mid-layer request 5578 * @scsi_cmd: scsi command struct 5579 * @done: done function 5580 * 5581 * This function queues a request generated by the mid-layer. 5582 * 5583 * Return value: 5584 * 0 on success 5585 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 5586 * SCSI_MLQUEUE_HOST_BUSY if host is busy 5587 **/ 5588static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, 5589 void (*done) (struct scsi_cmnd *)) 5590{ 5591 struct ipr_ioa_cfg *ioa_cfg; 5592 struct ipr_resource_entry *res; 5593 struct ipr_ioarcb *ioarcb; 5594 struct ipr_cmnd *ipr_cmd; 5595 int rc = 0; 5596 5597 scsi_cmd->scsi_done = done; 5598 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 5599 res = scsi_cmd->device->hostdata; 5600 scsi_cmd->result = (DID_OK << 16); 5601 5602 /* 5603 * We are currently blocking all devices due to a host reset 5604 * We have told the host to stop giving us new requests, but 5605 * ERP ops don't count. FIXME 5606 */ 5607 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) 5608 return SCSI_MLQUEUE_HOST_BUSY; 5609 5610 /* 5611 * FIXME - Create scsi_set_host_offline interface 5612 * and the ioa_is_dead check can be removed 5613 */ 5614 if (unlikely(ioa_cfg->ioa_is_dead || !res)) { 5615 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 5616 scsi_cmd->result = (DID_NO_CONNECT << 16); 5617 scsi_cmd->scsi_done(scsi_cmd); 5618 return 0; 5619 } 5620 5621 if (ipr_is_gata(res) && res->sata_port) 5622 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap); 5623 5624 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5625 ioarcb = &ipr_cmd->ioarcb; 5626 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 5627 5628 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 5629 ipr_cmd->scsi_cmd = scsi_cmd; 5630 ioarcb->res_handle = res->res_handle; 5631 ipr_cmd->done = ipr_scsi_done; 5632 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res)); 5633 5634 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 5635 if (scsi_cmd->underflow == 0) 5636 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 5637 5638 if (res->needs_sync_complete) { 5639 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 5640 res->needs_sync_complete = 0; 5641 } 5642 5643 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 5644 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 5645 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 5646 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); 5647 } 5648 5649 if (scsi_cmd->cmnd[0] >= 0xC0 && 5650 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) 5651 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5652 5653 if (likely(rc == 0)) { 5654 if (ioa_cfg->sis64) 5655 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd); 5656 else 5657 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 5658 } 5659 5660 if (likely(rc == 0)) { 5661 mb(); 5662 ipr_send_command(ipr_cmd); 5663 } else { 5664 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5665 return SCSI_MLQUEUE_HOST_BUSY; 5666 } 5667 5668 return 0; 5669} 5670 5671/** 5672 * ipr_ioctl - IOCTL handler 5673 * @sdev: scsi device struct 5674 * @cmd: IOCTL cmd 5675 * @arg: IOCTL arg 5676 * 5677 * Return value: 5678 * 0 on success / other on failure 5679 **/ 5680static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) 5681{ 5682 struct ipr_resource_entry *res; 5683 5684 res = (struct ipr_resource_entry *)sdev->hostdata; 5685 if (res && ipr_is_gata(res)) { 5686 if (cmd == HDIO_GET_IDENTITY) 5687 return -ENOTTY; 5688 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg); 5689 } 5690 5691 return -EINVAL; 5692} 5693 5694/** 5695 * ipr_info - Get information about the card/driver 5696 * @scsi_host: scsi host struct 5697 * 5698 * Return value: 5699 * pointer to buffer with description string 5700 **/ 5701static const char * ipr_ioa_info(struct Scsi_Host *host) 5702{ 5703 static char buffer[512]; 5704 struct ipr_ioa_cfg *ioa_cfg; 5705 unsigned long lock_flags = 0; 5706 5707 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 5708 5709 spin_lock_irqsave(host->host_lock, lock_flags); 5710 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 5711 spin_unlock_irqrestore(host->host_lock, lock_flags); 5712 5713 return buffer; 5714} 5715 5716static struct scsi_host_template driver_template = { 5717 .module = THIS_MODULE, 5718 .name = "IPR", 5719 .info = ipr_ioa_info, 5720 .ioctl = ipr_ioctl, 5721 .queuecommand = ipr_queuecommand, 5722 .eh_abort_handler = ipr_eh_abort, 5723 .eh_device_reset_handler = ipr_eh_dev_reset, 5724 .eh_host_reset_handler = ipr_eh_host_reset, 5725 .slave_alloc = ipr_slave_alloc, 5726 .slave_configure = ipr_slave_configure, 5727 .slave_destroy = ipr_slave_destroy, 5728 .target_alloc = ipr_target_alloc, 5729 .target_destroy = ipr_target_destroy, 5730 .change_queue_depth = ipr_change_queue_depth, 5731 .change_queue_type = ipr_change_queue_type, 5732 .bios_param = ipr_biosparam, 5733 .can_queue = IPR_MAX_COMMANDS, 5734 .this_id = -1, 5735 .sg_tablesize = IPR_MAX_SGLIST, 5736 .max_sectors = IPR_IOA_MAX_SECTORS, 5737 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 5738 .use_clustering = ENABLE_CLUSTERING, 5739 .shost_attrs = ipr_ioa_attrs, 5740 .sdev_attrs = ipr_dev_attrs, 5741 .proc_name = IPR_NAME 5742}; 5743 5744/** 5745 * ipr_ata_phy_reset - libata phy_reset handler 5746 * @ap: ata port to reset 5747 * 5748 **/ 5749static void ipr_ata_phy_reset(struct ata_port *ap) 5750{ 5751 unsigned long flags; 5752 struct ipr_sata_port *sata_port = ap->private_data; 5753 struct ipr_resource_entry *res = sata_port->res; 5754 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5755 int rc; 5756 5757 ENTER; 5758 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5759 while(ioa_cfg->in_reset_reload) { 5760 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5761 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5762 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5763 } 5764 5765 if (!ioa_cfg->allow_cmds) 5766 goto out_unlock; 5767 5768 rc = ipr_device_reset(ioa_cfg, res); 5769 5770 if (rc) { 5771 ap->link.device[0].class = ATA_DEV_NONE; 5772 goto out_unlock; 5773 } 5774 5775 ap->link.device[0].class = res->ata_class; 5776 if (ap->link.device[0].class == ATA_DEV_UNKNOWN) 5777 ap->link.device[0].class = ATA_DEV_NONE; 5778 5779out_unlock: 5780 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5781 LEAVE; 5782} 5783 5784/** 5785 * ipr_ata_post_internal - Cleanup after an internal command 5786 * @qc: ATA queued command 5787 * 5788 * Return value: 5789 * none 5790 **/ 5791static void ipr_ata_post_internal(struct ata_queued_cmd *qc) 5792{ 5793 struct ipr_sata_port *sata_port = qc->ap->private_data; 5794 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5795 struct ipr_cmnd *ipr_cmd; 5796 unsigned long flags; 5797 5798 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5799 while(ioa_cfg->in_reset_reload) { 5800 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5801 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5802 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5803 } 5804 5805 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 5806 if (ipr_cmd->qc == qc) { 5807 ipr_device_reset(ioa_cfg, sata_port->res); 5808 break; 5809 } 5810 } 5811 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5812} 5813 5814/** 5815 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure 5816 * @regs: destination 5817 * @tf: source ATA taskfile 5818 * 5819 * Return value: 5820 * none 5821 **/ 5822static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs, 5823 struct ata_taskfile *tf) 5824{ 5825 regs->feature = tf->feature; 5826 regs->nsect = tf->nsect; 5827 regs->lbal = tf->lbal; 5828 regs->lbam = tf->lbam; 5829 regs->lbah = tf->lbah; 5830 regs->device = tf->device; 5831 regs->command = tf->command; 5832 regs->hob_feature = tf->hob_feature; 5833 regs->hob_nsect = tf->hob_nsect; 5834 regs->hob_lbal = tf->hob_lbal; 5835 regs->hob_lbam = tf->hob_lbam; 5836 regs->hob_lbah = tf->hob_lbah; 5837 regs->ctl = tf->ctl; 5838} 5839 5840/** 5841 * ipr_sata_done - done function for SATA commands 5842 * @ipr_cmd: ipr command struct 5843 * 5844 * This function is invoked by the interrupt handler for 5845 * ops generated by the SCSI mid-layer to SATA devices 5846 * 5847 * Return value: 5848 * none 5849 **/ 5850static void ipr_sata_done(struct ipr_cmnd *ipr_cmd) 5851{ 5852 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5853 struct ata_queued_cmd *qc = ipr_cmd->qc; 5854 struct ipr_sata_port *sata_port = qc->ap->private_data; 5855 struct ipr_resource_entry *res = sata_port->res; 5856 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5857 5858 if (ipr_cmd->ioa_cfg->sis64) 5859 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata, 5860 sizeof(struct ipr_ioasa_gata)); 5861 else 5862 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata, 5863 sizeof(struct ipr_ioasa_gata)); 5864 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 5865 5866 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET) 5867 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target); 5868 5869 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 5870 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status); 5871 else 5872 qc->err_mask |= ac_err_mask(sata_port->ioasa.status); 5873 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5874 ata_qc_complete(qc); 5875} 5876 5877/** 5878 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list 5879 * @ipr_cmd: ipr command struct 5880 * @qc: ATA queued command 5881 * 5882 **/ 5883static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd, 5884 struct ata_queued_cmd *qc) 5885{ 5886 u32 ioadl_flags = 0; 5887 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5888 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 5889 struct ipr_ioadl64_desc *last_ioadl64 = NULL; 5890 int len = qc->nbytes; 5891 struct scatterlist *sg; 5892 unsigned int si; 5893 dma_addr_t dma_addr = ipr_cmd->dma_addr; 5894 5895 if (len == 0) 5896 return; 5897 5898 if (qc->dma_dir == DMA_TO_DEVICE) { 5899 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5900 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5901 } else if (qc->dma_dir == DMA_FROM_DEVICE) 5902 ioadl_flags = IPR_IOADL_FLAGS_READ; 5903 5904 ioarcb->data_transfer_length = cpu_to_be32(len); 5905 ioarcb->ioadl_len = 5906 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 5907 ioarcb->u.sis64_addr_data.data_ioadl_addr = 5908 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl)); 5909 5910 for_each_sg(qc->sg, sg, qc->n_elem, si) { 5911 ioadl64->flags = cpu_to_be32(ioadl_flags); 5912 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg)); 5913 ioadl64->address = cpu_to_be64(sg_dma_address(sg)); 5914 5915 last_ioadl64 = ioadl64; 5916 ioadl64++; 5917 } 5918 5919 if (likely(last_ioadl64)) 5920 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5921} 5922 5923/** 5924 * ipr_build_ata_ioadl - Build an ATA scatter/gather list 5925 * @ipr_cmd: ipr command struct 5926 * @qc: ATA queued command 5927 * 5928 **/ 5929static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, 5930 struct ata_queued_cmd *qc) 5931{ 5932 u32 ioadl_flags = 0; 5933 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5934 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 5935 struct ipr_ioadl_desc *last_ioadl = NULL; 5936 int len = qc->nbytes; 5937 struct scatterlist *sg; 5938 unsigned int si; 5939 5940 if (len == 0) 5941 return; 5942 5943 if (qc->dma_dir == DMA_TO_DEVICE) { 5944 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5945 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5946 ioarcb->data_transfer_length = cpu_to_be32(len); 5947 ioarcb->ioadl_len = 5948 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5949 } else if (qc->dma_dir == DMA_FROM_DEVICE) { 5950 ioadl_flags = IPR_IOADL_FLAGS_READ; 5951 ioarcb->read_data_transfer_length = cpu_to_be32(len); 5952 ioarcb->read_ioadl_len = 5953 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5954 } 5955 5956 for_each_sg(qc->sg, sg, qc->n_elem, si) { 5957 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 5958 ioadl->address = cpu_to_be32(sg_dma_address(sg)); 5959 5960 last_ioadl = ioadl; 5961 ioadl++; 5962 } 5963 5964 if (likely(last_ioadl)) 5965 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5966} 5967 5968/** 5969 * ipr_qc_issue - Issue a SATA qc to a device 5970 * @qc: queued command 5971 * 5972 * Return value: 5973 * 0 if success 5974 **/ 5975static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) 5976{ 5977 struct ata_port *ap = qc->ap; 5978 struct ipr_sata_port *sata_port = ap->private_data; 5979 struct ipr_resource_entry *res = sata_port->res; 5980 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5981 struct ipr_cmnd *ipr_cmd; 5982 struct ipr_ioarcb *ioarcb; 5983 struct ipr_ioarcb_ata_regs *regs; 5984 5985 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead)) 5986 return AC_ERR_SYSTEM; 5987 5988 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5989 ioarcb = &ipr_cmd->ioarcb; 5990 5991 if (ioa_cfg->sis64) { 5992 regs = &ipr_cmd->i.ata_ioadl.regs; 5993 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb)); 5994 } else 5995 regs = &ioarcb->u.add_data.u.regs; 5996 5997 memset(regs, 0, sizeof(*regs)); 5998 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs)); 5999 6000 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 6001 ipr_cmd->qc = qc; 6002 ipr_cmd->done = ipr_sata_done; 6003 ipr_cmd->ioarcb.res_handle = res->res_handle; 6004 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU; 6005 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 6006 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6007 ipr_cmd->dma_use_sg = qc->n_elem; 6008 6009 if (ioa_cfg->sis64) 6010 ipr_build_ata_ioadl64(ipr_cmd, qc); 6011 else 6012 ipr_build_ata_ioadl(ipr_cmd, qc); 6013 6014 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 6015 ipr_copy_sata_tf(regs, &qc->tf); 6016 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN); 6017 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res)); 6018 6019 switch (qc->tf.protocol) { 6020 case ATA_PROT_NODATA: 6021 case ATA_PROT_PIO: 6022 break; 6023 6024 case ATA_PROT_DMA: 6025 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 6026 break; 6027 6028 case ATAPI_PROT_PIO: 6029 case ATAPI_PROT_NODATA: 6030 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 6031 break; 6032 6033 case ATAPI_PROT_DMA: 6034 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 6035 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 6036 break; 6037 6038 default: 6039 WARN_ON(1); 6040 return AC_ERR_INVALID; 6041 } 6042 6043 mb(); 6044 6045 ipr_send_command(ipr_cmd); 6046 6047 return 0; 6048} 6049 6050/** 6051 * ipr_qc_fill_rtf - Read result TF 6052 * @qc: ATA queued command 6053 * 6054 * Return value: 6055 * true 6056 **/ 6057static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc) 6058{ 6059 struct ipr_sata_port *sata_port = qc->ap->private_data; 6060 struct ipr_ioasa_gata *g = &sata_port->ioasa; 6061 struct ata_taskfile *tf = &qc->result_tf; 6062 6063 tf->feature = g->error; 6064 tf->nsect = g->nsect; 6065 tf->lbal = g->lbal; 6066 tf->lbam = g->lbam; 6067 tf->lbah = g->lbah; 6068 tf->device = g->device; 6069 tf->command = g->status; 6070 tf->hob_nsect = g->hob_nsect; 6071 tf->hob_lbal = g->hob_lbal; 6072 tf->hob_lbam = g->hob_lbam; 6073 tf->hob_lbah = g->hob_lbah; 6074 tf->ctl = g->alt_status; 6075 6076 return true; 6077} 6078 6079static struct ata_port_operations ipr_sata_ops = { 6080 .phy_reset = ipr_ata_phy_reset, 6081 .hardreset = ipr_sata_reset, 6082 .post_internal_cmd = ipr_ata_post_internal, 6083 .qc_prep = ata_noop_qc_prep, 6084 .qc_issue = ipr_qc_issue, 6085 .qc_fill_rtf = ipr_qc_fill_rtf, 6086 .port_start = ata_sas_port_start, 6087 .port_stop = ata_sas_port_stop 6088}; 6089 6090static struct ata_port_info sata_port_info = { 6091 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET | 6092 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA, 6093 .pio_mask = 0x10, /* pio4 */ 6094 .mwdma_mask = 0x07, 6095 .udma_mask = 0x7f, /* udma0-6 */ 6096 .port_ops = &ipr_sata_ops 6097}; 6098 6099#ifdef CONFIG_PPC_PSERIES 6100static const u16 ipr_blocked_processors[] = { 6101 PV_NORTHSTAR, 6102 PV_PULSAR, 6103 PV_POWER4, 6104 PV_ICESTAR, 6105 PV_SSTAR, 6106 PV_POWER4p, 6107 PV_630, 6108 PV_630p 6109}; 6110 6111/** 6112 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 6113 * @ioa_cfg: ioa cfg struct 6114 * 6115 * Adapters that use Gemstone revision < 3.1 do not work reliably on 6116 * certain pSeries hardware. This function determines if the given 6117 * adapter is in one of these confgurations or not. 6118 * 6119 * Return value: 6120 * 1 if adapter is not supported / 0 if adapter is supported 6121 **/ 6122static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 6123{ 6124 int i; 6125 6126 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) { 6127 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ 6128 if (__is_processor(ipr_blocked_processors[i])) 6129 return 1; 6130 } 6131 } 6132 return 0; 6133} 6134#else 6135#define ipr_invalid_adapter(ioa_cfg) 0 6136#endif 6137 6138/** 6139 * ipr_ioa_bringdown_done - IOA bring down completion. 6140 * @ipr_cmd: ipr command struct 6141 * 6142 * This function processes the completion of an adapter bring down. 6143 * It wakes any reset sleepers. 6144 * 6145 * Return value: 6146 * IPR_RC_JOB_RETURN 6147 **/ 6148static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 6149{ 6150 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6151 6152 ENTER; 6153 ioa_cfg->in_reset_reload = 0; 6154 ioa_cfg->reset_retries = 0; 6155 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6156 wake_up_all(&ioa_cfg->reset_wait_q); 6157 6158 spin_unlock_irq(ioa_cfg->host->host_lock); 6159 scsi_unblock_requests(ioa_cfg->host); 6160 spin_lock_irq(ioa_cfg->host->host_lock); 6161 LEAVE; 6162 6163 return IPR_RC_JOB_RETURN; 6164} 6165 6166/** 6167 * ipr_ioa_reset_done - IOA reset completion. 6168 * @ipr_cmd: ipr command struct 6169 * 6170 * This function processes the completion of an adapter reset. 6171 * It schedules any necessary mid-layer add/removes and 6172 * wakes any reset sleepers. 6173 * 6174 * Return value: 6175 * IPR_RC_JOB_RETURN 6176 **/ 6177static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 6178{ 6179 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6180 struct ipr_resource_entry *res; 6181 struct ipr_hostrcb *hostrcb, *temp; 6182 int i = 0; 6183 6184 ENTER; 6185 ioa_cfg->in_reset_reload = 0; 6186 ioa_cfg->allow_cmds = 1; 6187 ioa_cfg->reset_cmd = NULL; 6188 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 6189 6190 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 6191 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { 6192 ipr_trace; 6193 break; 6194 } 6195 } 6196 schedule_work(&ioa_cfg->work_q); 6197 6198 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { 6199 list_del(&hostrcb->queue); 6200 if (i++ < IPR_NUM_LOG_HCAMS) 6201 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 6202 else 6203 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 6204 } 6205 6206 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS); 6207 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 6208 6209 ioa_cfg->reset_retries = 0; 6210 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6211 wake_up_all(&ioa_cfg->reset_wait_q); 6212 6213 spin_unlock(ioa_cfg->host->host_lock); 6214 scsi_unblock_requests(ioa_cfg->host); 6215 spin_lock(ioa_cfg->host->host_lock); 6216 6217 if (!ioa_cfg->allow_cmds) 6218 scsi_block_requests(ioa_cfg->host); 6219 6220 LEAVE; 6221 return IPR_RC_JOB_RETURN; 6222} 6223 6224/** 6225 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 6226 * @supported_dev: supported device struct 6227 * @vpids: vendor product id struct 6228 * 6229 * Return value: 6230 * none 6231 **/ 6232static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 6233 struct ipr_std_inq_vpids *vpids) 6234{ 6235 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 6236 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 6237 supported_dev->num_records = 1; 6238 supported_dev->data_length = 6239 cpu_to_be16(sizeof(struct ipr_supported_device)); 6240 supported_dev->reserved = 0; 6241} 6242 6243/** 6244 * ipr_set_supported_devs - Send Set Supported Devices for a device 6245 * @ipr_cmd: ipr command struct 6246 * 6247 * This function sends a Set Supported Devices to the adapter 6248 * 6249 * Return value: 6250 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6251 **/ 6252static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 6253{ 6254 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6255 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 6256 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6257 struct ipr_resource_entry *res = ipr_cmd->u.res; 6258 6259 ipr_cmd->job_step = ipr_ioa_reset_done; 6260 6261 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 6262 if (!ipr_is_scsi_disk(res)) 6263 continue; 6264 6265 ipr_cmd->u.res = res; 6266 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids); 6267 6268 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6269 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6270 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6271 6272 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 6273 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES; 6274 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 6275 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 6276 6277 ipr_init_ioadl(ipr_cmd, 6278 ioa_cfg->vpd_cbs_dma + 6279 offsetof(struct ipr_misc_cbs, supp_dev), 6280 sizeof(struct ipr_supported_device), 6281 IPR_IOADL_FLAGS_WRITE_LAST); 6282 6283 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 6284 IPR_SET_SUP_DEVICE_TIMEOUT); 6285 6286 if (!ioa_cfg->sis64) 6287 ipr_cmd->job_step = ipr_set_supported_devs; 6288 return IPR_RC_JOB_RETURN; 6289 } 6290 6291 return IPR_RC_JOB_CONTINUE; 6292} 6293 6294/** 6295 * ipr_get_mode_page - Locate specified mode page 6296 * @mode_pages: mode page buffer 6297 * @page_code: page code to find 6298 * @len: minimum required length for mode page 6299 * 6300 * Return value: 6301 * pointer to mode page / NULL on failure 6302 **/ 6303static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 6304 u32 page_code, u32 len) 6305{ 6306 struct ipr_mode_page_hdr *mode_hdr; 6307 u32 page_length; 6308 u32 length; 6309 6310 if (!mode_pages || (mode_pages->hdr.length == 0)) 6311 return NULL; 6312 6313 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 6314 mode_hdr = (struct ipr_mode_page_hdr *) 6315 (mode_pages->data + mode_pages->hdr.block_desc_len); 6316 6317 while (length) { 6318 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 6319 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 6320 return mode_hdr; 6321 break; 6322 } else { 6323 page_length = (sizeof(struct ipr_mode_page_hdr) + 6324 mode_hdr->page_length); 6325 length -= page_length; 6326 mode_hdr = (struct ipr_mode_page_hdr *) 6327 ((unsigned long)mode_hdr + page_length); 6328 } 6329 } 6330 return NULL; 6331} 6332 6333/** 6334 * ipr_check_term_power - Check for term power errors 6335 * @ioa_cfg: ioa config struct 6336 * @mode_pages: IOAFP mode pages buffer 6337 * 6338 * Check the IOAFP's mode page 28 for term power errors 6339 * 6340 * Return value: 6341 * nothing 6342 **/ 6343static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 6344 struct ipr_mode_pages *mode_pages) 6345{ 6346 int i; 6347 int entry_length; 6348 struct ipr_dev_bus_entry *bus; 6349 struct ipr_mode_page28 *mode_page; 6350 6351 mode_page = ipr_get_mode_page(mode_pages, 0x28, 6352 sizeof(struct ipr_mode_page28)); 6353 6354 entry_length = mode_page->entry_length; 6355 6356 bus = mode_page->bus; 6357 6358 for (i = 0; i < mode_page->num_entries; i++) { 6359 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 6360 dev_err(&ioa_cfg->pdev->dev, 6361 "Term power is absent on scsi bus %d\n", 6362 bus->res_addr.bus); 6363 } 6364 6365 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 6366 } 6367} 6368 6369/** 6370 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 6371 * @ioa_cfg: ioa config struct 6372 * 6373 * Looks through the config table checking for SES devices. If 6374 * the SES device is in the SES table indicating a maximum SCSI 6375 * bus speed, the speed is limited for the bus. 6376 * 6377 * Return value: 6378 * none 6379 **/ 6380static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 6381{ 6382 u32 max_xfer_rate; 6383 int i; 6384 6385 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 6386 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 6387 ioa_cfg->bus_attr[i].bus_width); 6388 6389 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 6390 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 6391 } 6392} 6393 6394/** 6395 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 6396 * @ioa_cfg: ioa config struct 6397 * @mode_pages: mode page 28 buffer 6398 * 6399 * Updates mode page 28 based on driver configuration 6400 * 6401 * Return value: 6402 * none 6403 **/ 6404static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 6405 struct ipr_mode_pages *mode_pages) 6406{ 6407 int i, entry_length; 6408 struct ipr_dev_bus_entry *bus; 6409 struct ipr_bus_attributes *bus_attr; 6410 struct ipr_mode_page28 *mode_page; 6411 6412 mode_page = ipr_get_mode_page(mode_pages, 0x28, 6413 sizeof(struct ipr_mode_page28)); 6414 6415 entry_length = mode_page->entry_length; 6416 6417 /* Loop for each device bus entry */ 6418 for (i = 0, bus = mode_page->bus; 6419 i < mode_page->num_entries; 6420 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 6421 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 6422 dev_err(&ioa_cfg->pdev->dev, 6423 "Invalid resource address reported: 0x%08X\n", 6424 IPR_GET_PHYS_LOC(bus->res_addr)); 6425 continue; 6426 } 6427 6428 bus_attr = &ioa_cfg->bus_attr[i]; 6429 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 6430 bus->bus_width = bus_attr->bus_width; 6431 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 6432 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 6433 if (bus_attr->qas_enabled) 6434 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 6435 else 6436 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 6437 } 6438} 6439 6440/** 6441 * ipr_build_mode_select - Build a mode select command 6442 * @ipr_cmd: ipr command struct 6443 * @res_handle: resource handle to send command to 6444 * @parm: Byte 2 of Mode Sense command 6445 * @dma_addr: DMA buffer address 6446 * @xfer_len: data transfer length 6447 * 6448 * Return value: 6449 * none 6450 **/ 6451static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 6452 __be32 res_handle, u8 parm, 6453 dma_addr_t dma_addr, u8 xfer_len) 6454{ 6455 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6456 6457 ioarcb->res_handle = res_handle; 6458 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6459 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6460 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 6461 ioarcb->cmd_pkt.cdb[1] = parm; 6462 ioarcb->cmd_pkt.cdb[4] = xfer_len; 6463 6464 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST); 6465} 6466 6467/** 6468 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 6469 * @ipr_cmd: ipr command struct 6470 * 6471 * This function sets up the SCSI bus attributes and sends 6472 * a Mode Select for Page 28 to activate them. 6473 * 6474 * Return value: 6475 * IPR_RC_JOB_RETURN 6476 **/ 6477static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 6478{ 6479 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6480 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 6481 int length; 6482 6483 ENTER; 6484 ipr_scsi_bus_speed_limit(ioa_cfg); 6485 ipr_check_term_power(ioa_cfg, mode_pages); 6486 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 6487 length = mode_pages->hdr.length + 1; 6488 mode_pages->hdr.length = 0; 6489 6490 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 6491 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 6492 length); 6493 6494 ipr_cmd->job_step = ipr_set_supported_devs; 6495 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 6496 struct ipr_resource_entry, queue); 6497 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6498 6499 LEAVE; 6500 return IPR_RC_JOB_RETURN; 6501} 6502 6503/** 6504 * ipr_build_mode_sense - Builds a mode sense command 6505 * @ipr_cmd: ipr command struct 6506 * @res: resource entry struct 6507 * @parm: Byte 2 of mode sense command 6508 * @dma_addr: DMA address of mode sense buffer 6509 * @xfer_len: Size of DMA buffer 6510 * 6511 * Return value: 6512 * none 6513 **/ 6514static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 6515 __be32 res_handle, 6516 u8 parm, dma_addr_t dma_addr, u8 xfer_len) 6517{ 6518 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6519 6520 ioarcb->res_handle = res_handle; 6521 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 6522 ioarcb->cmd_pkt.cdb[2] = parm; 6523 ioarcb->cmd_pkt.cdb[4] = xfer_len; 6524 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6525 6526 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 6527} 6528 6529/** 6530 * ipr_reset_cmd_failed - Handle failure of IOA reset command 6531 * @ipr_cmd: ipr command struct 6532 * 6533 * This function handles the failure of an IOA bringup command. 6534 * 6535 * Return value: 6536 * IPR_RC_JOB_RETURN 6537 **/ 6538static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 6539{ 6540 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6541 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6542 6543 dev_err(&ioa_cfg->pdev->dev, 6544 "0x%02X failed with IOASC: 0x%08X\n", 6545 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 6546 6547 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6548 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6549 return IPR_RC_JOB_RETURN; 6550} 6551 6552/** 6553 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 6554 * @ipr_cmd: ipr command struct 6555 * 6556 * This function handles the failure of a Mode Sense to the IOAFP. 6557 * Some adapters do not handle all mode pages. 6558 * 6559 * Return value: 6560 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6561 **/ 6562static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 6563{ 6564 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6565 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6566 6567 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 6568 ipr_cmd->job_step = ipr_set_supported_devs; 6569 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 6570 struct ipr_resource_entry, queue); 6571 return IPR_RC_JOB_CONTINUE; 6572 } 6573 6574 return ipr_reset_cmd_failed(ipr_cmd); 6575} 6576 6577/** 6578 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 6579 * @ipr_cmd: ipr command struct 6580 * 6581 * This function send a Page 28 mode sense to the IOA to 6582 * retrieve SCSI bus attributes. 6583 * 6584 * Return value: 6585 * IPR_RC_JOB_RETURN 6586 **/ 6587static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 6588{ 6589 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6590 6591 ENTER; 6592 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 6593 0x28, ioa_cfg->vpd_cbs_dma + 6594 offsetof(struct ipr_misc_cbs, mode_pages), 6595 sizeof(struct ipr_mode_pages)); 6596 6597 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 6598 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 6599 6600 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6601 6602 LEAVE; 6603 return IPR_RC_JOB_RETURN; 6604} 6605 6606/** 6607 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA 6608 * @ipr_cmd: ipr command struct 6609 * 6610 * This function enables dual IOA RAID support if possible. 6611 * 6612 * Return value: 6613 * IPR_RC_JOB_RETURN 6614 **/ 6615static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd) 6616{ 6617 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6618 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 6619 struct ipr_mode_page24 *mode_page; 6620 int length; 6621 6622 ENTER; 6623 mode_page = ipr_get_mode_page(mode_pages, 0x24, 6624 sizeof(struct ipr_mode_page24)); 6625 6626 if (mode_page) 6627 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF; 6628 6629 length = mode_pages->hdr.length + 1; 6630 mode_pages->hdr.length = 0; 6631 6632 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 6633 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 6634 length); 6635 6636 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 6637 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6638 6639 LEAVE; 6640 return IPR_RC_JOB_RETURN; 6641} 6642 6643/** 6644 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense 6645 * @ipr_cmd: ipr command struct 6646 * 6647 * This function handles the failure of a Mode Sense to the IOAFP. 6648 * Some adapters do not handle all mode pages. 6649 * 6650 * Return value: 6651 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6652 **/ 6653static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd) 6654{ 6655 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6656 6657 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 6658 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 6659 return IPR_RC_JOB_CONTINUE; 6660 } 6661 6662 return ipr_reset_cmd_failed(ipr_cmd); 6663} 6664 6665/** 6666 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA 6667 * @ipr_cmd: ipr command struct 6668 * 6669 * This function send a mode sense to the IOA to retrieve 6670 * the IOA Advanced Function Control mode page. 6671 * 6672 * Return value: 6673 * IPR_RC_JOB_RETURN 6674 **/ 6675static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd) 6676{ 6677 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6678 6679 ENTER; 6680 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 6681 0x24, ioa_cfg->vpd_cbs_dma + 6682 offsetof(struct ipr_misc_cbs, mode_pages), 6683 sizeof(struct ipr_mode_pages)); 6684 6685 ipr_cmd->job_step = ipr_ioafp_mode_select_page24; 6686 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed; 6687 6688 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6689 6690 LEAVE; 6691 return IPR_RC_JOB_RETURN; 6692} 6693 6694/** 6695 * ipr_init_res_table - Initialize the resource table 6696 * @ipr_cmd: ipr command struct 6697 * 6698 * This function looks through the existing resource table, comparing 6699 * it with the config table. This function will take care of old/new 6700 * devices and schedule adding/removing them from the mid-layer 6701 * as appropriate. 6702 * 6703 * Return value: 6704 * IPR_RC_JOB_CONTINUE 6705 **/ 6706static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 6707{ 6708 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6709 struct ipr_resource_entry *res, *temp; 6710 struct ipr_config_table_entry_wrapper cfgtew; 6711 int entries, found, flag, i; 6712 LIST_HEAD(old_res); 6713 6714 ENTER; 6715 if (ioa_cfg->sis64) 6716 flag = ioa_cfg->u.cfg_table64->hdr64.flags; 6717 else 6718 flag = ioa_cfg->u.cfg_table->hdr.flags; 6719 6720 if (flag & IPR_UCODE_DOWNLOAD_REQ) 6721 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 6722 6723 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 6724 list_move_tail(&res->queue, &old_res); 6725 6726 if (ioa_cfg->sis64) 6727 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries); 6728 else 6729 entries = ioa_cfg->u.cfg_table->hdr.num_entries; 6730 6731 for (i = 0; i < entries; i++) { 6732 if (ioa_cfg->sis64) 6733 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i]; 6734 else 6735 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i]; 6736 found = 0; 6737 6738 list_for_each_entry_safe(res, temp, &old_res, queue) { 6739 if (ipr_is_same_device(res, &cfgtew)) { 6740 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 6741 found = 1; 6742 break; 6743 } 6744 } 6745 6746 if (!found) { 6747 if (list_empty(&ioa_cfg->free_res_q)) { 6748 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 6749 break; 6750 } 6751 6752 found = 1; 6753 res = list_entry(ioa_cfg->free_res_q.next, 6754 struct ipr_resource_entry, queue); 6755 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 6756 ipr_init_res_entry(res, &cfgtew); 6757 res->add_to_ml = 1; 6758 } 6759 6760 if (found) 6761 ipr_update_res_entry(res, &cfgtew); 6762 } 6763 6764 list_for_each_entry_safe(res, temp, &old_res, queue) { 6765 if (res->sdev) { 6766 res->del_from_ml = 1; 6767 res->res_handle = IPR_INVALID_RES_HANDLE; 6768 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 6769 } 6770 } 6771 6772 list_for_each_entry_safe(res, temp, &old_res, queue) { 6773 ipr_clear_res_target(res); 6774 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 6775 } 6776 6777 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 6778 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24; 6779 else 6780 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 6781 6782 LEAVE; 6783 return IPR_RC_JOB_CONTINUE; 6784} 6785 6786/** 6787 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 6788 * @ipr_cmd: ipr command struct 6789 * 6790 * This function sends a Query IOA Configuration command 6791 * to the adapter to retrieve the IOA configuration table. 6792 * 6793 * Return value: 6794 * IPR_RC_JOB_RETURN 6795 **/ 6796static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 6797{ 6798 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6799 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6800 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 6801 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 6802 6803 ENTER; 6804 if (cap->cap & IPR_CAP_DUAL_IOA_RAID) 6805 ioa_cfg->dual_raid = 1; 6806 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 6807 ucode_vpd->major_release, ucode_vpd->card_type, 6808 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 6809 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6810 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6811 6812 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 6813 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff; 6814 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff; 6815 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff; 6816 6817 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size, 6818 IPR_IOADL_FLAGS_READ_LAST); 6819 6820 ipr_cmd->job_step = ipr_init_res_table; 6821 6822 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6823 6824 LEAVE; 6825 return IPR_RC_JOB_RETURN; 6826} 6827 6828/** 6829 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 6830 * @ipr_cmd: ipr command struct 6831 * 6832 * This utility function sends an inquiry to the adapter. 6833 * 6834 * Return value: 6835 * none 6836 **/ 6837static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 6838 dma_addr_t dma_addr, u8 xfer_len) 6839{ 6840 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6841 6842 ENTER; 6843 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6844 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6845 6846 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 6847 ioarcb->cmd_pkt.cdb[1] = flags; 6848 ioarcb->cmd_pkt.cdb[2] = page; 6849 ioarcb->cmd_pkt.cdb[4] = xfer_len; 6850 6851 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 6852 6853 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6854 LEAVE; 6855} 6856 6857/** 6858 * ipr_inquiry_page_supported - Is the given inquiry page supported 6859 * @page0: inquiry page 0 buffer 6860 * @page: page code. 6861 * 6862 * This function determines if the specified inquiry page is supported. 6863 * 6864 * Return value: 6865 * 1 if page is supported / 0 if not 6866 **/ 6867static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 6868{ 6869 int i; 6870 6871 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 6872 if (page0->page[i] == page) 6873 return 1; 6874 6875 return 0; 6876} 6877 6878/** 6879 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter. 6880 * @ipr_cmd: ipr command struct 6881 * 6882 * This function sends a Page 0xD0 inquiry to the adapter 6883 * to retrieve adapter capabilities. 6884 * 6885 * Return value: 6886 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6887 **/ 6888static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd) 6889{ 6890 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6891 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 6892 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 6893 6894 ENTER; 6895 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 6896 memset(cap, 0, sizeof(*cap)); 6897 6898 if (ipr_inquiry_page_supported(page0, 0xD0)) { 6899 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0, 6900 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap), 6901 sizeof(struct ipr_inquiry_cap)); 6902 return IPR_RC_JOB_RETURN; 6903 } 6904 6905 LEAVE; 6906 return IPR_RC_JOB_CONTINUE; 6907} 6908 6909/** 6910 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 6911 * @ipr_cmd: ipr command struct 6912 * 6913 * This function sends a Page 3 inquiry to the adapter 6914 * to retrieve software VPD information. 6915 * 6916 * Return value: 6917 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6918 **/ 6919static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 6920{ 6921 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6922 6923 ENTER; 6924 6925 ipr_cmd->job_step = ipr_ioafp_cap_inquiry; 6926 6927 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 6928 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 6929 sizeof(struct ipr_inquiry_page3)); 6930 6931 LEAVE; 6932 return IPR_RC_JOB_RETURN; 6933} 6934 6935/** 6936 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 6937 * @ipr_cmd: ipr command struct 6938 * 6939 * This function sends a Page 0 inquiry to the adapter 6940 * to retrieve supported inquiry pages. 6941 * 6942 * Return value: 6943 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6944 **/ 6945static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 6946{ 6947 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6948 char type[5]; 6949 6950 ENTER; 6951 6952 /* Grab the type out of the VPD and store it away */ 6953 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 6954 type[4] = '\0'; 6955 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 6956 6957 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 6958 6959 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 6960 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 6961 sizeof(struct ipr_inquiry_page0)); 6962 6963 LEAVE; 6964 return IPR_RC_JOB_RETURN; 6965} 6966 6967/** 6968 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 6969 * @ipr_cmd: ipr command struct 6970 * 6971 * This function sends a standard inquiry to the adapter. 6972 * 6973 * Return value: 6974 * IPR_RC_JOB_RETURN 6975 **/ 6976static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 6977{ 6978 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6979 6980 ENTER; 6981 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 6982 6983 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 6984 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 6985 sizeof(struct ipr_ioa_vpd)); 6986 6987 LEAVE; 6988 return IPR_RC_JOB_RETURN; 6989} 6990 6991/** 6992 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ. 6993 * @ipr_cmd: ipr command struct 6994 * 6995 * This function send an Identify Host Request Response Queue 6996 * command to establish the HRRQ with the adapter. 6997 * 6998 * Return value: 6999 * IPR_RC_JOB_RETURN 7000 **/ 7001static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd) 7002{ 7003 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7004 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7005 7006 ENTER; 7007 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 7008 7009 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 7010 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7011 7012 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7013 if (ioa_cfg->sis64) 7014 ioarcb->cmd_pkt.cdb[1] = 0x1; 7015 ioarcb->cmd_pkt.cdb[2] = 7016 ((u64) ioa_cfg->host_rrq_dma >> 24) & 0xff; 7017 ioarcb->cmd_pkt.cdb[3] = 7018 ((u64) ioa_cfg->host_rrq_dma >> 16) & 0xff; 7019 ioarcb->cmd_pkt.cdb[4] = 7020 ((u64) ioa_cfg->host_rrq_dma >> 8) & 0xff; 7021 ioarcb->cmd_pkt.cdb[5] = 7022 ((u64) ioa_cfg->host_rrq_dma) & 0xff; 7023 ioarcb->cmd_pkt.cdb[7] = 7024 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; 7025 ioarcb->cmd_pkt.cdb[8] = 7026 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; 7027 7028 if (ioa_cfg->sis64) { 7029 ioarcb->cmd_pkt.cdb[10] = 7030 ((u64) ioa_cfg->host_rrq_dma >> 56) & 0xff; 7031 ioarcb->cmd_pkt.cdb[11] = 7032 ((u64) ioa_cfg->host_rrq_dma >> 48) & 0xff; 7033 ioarcb->cmd_pkt.cdb[12] = 7034 ((u64) ioa_cfg->host_rrq_dma >> 40) & 0xff; 7035 ioarcb->cmd_pkt.cdb[13] = 7036 ((u64) ioa_cfg->host_rrq_dma >> 32) & 0xff; 7037 } 7038 7039 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 7040 7041 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7042 7043 LEAVE; 7044 return IPR_RC_JOB_RETURN; 7045} 7046 7047/** 7048 * ipr_reset_timer_done - Adapter reset timer function 7049 * @ipr_cmd: ipr command struct 7050 * 7051 * Description: This function is used in adapter reset processing 7052 * for timing events. If the reset_cmd pointer in the IOA 7053 * config struct is not this adapter's we are doing nested 7054 * resets and fail_all_ops will take care of freeing the 7055 * command block. 7056 * 7057 * Return value: 7058 * none 7059 **/ 7060static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 7061{ 7062 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7063 unsigned long lock_flags = 0; 7064 7065 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 7066 7067 if (ioa_cfg->reset_cmd == ipr_cmd) { 7068 list_del(&ipr_cmd->queue); 7069 ipr_cmd->done(ipr_cmd); 7070 } 7071 7072 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 7073} 7074 7075/** 7076 * ipr_reset_start_timer - Start a timer for adapter reset job 7077 * @ipr_cmd: ipr command struct 7078 * @timeout: timeout value 7079 * 7080 * Description: This function is used in adapter reset processing 7081 * for timing events. If the reset_cmd pointer in the IOA 7082 * config struct is not this adapter's we are doing nested 7083 * resets and fail_all_ops will take care of freeing the 7084 * command block. 7085 * 7086 * Return value: 7087 * none 7088 **/ 7089static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 7090 unsigned long timeout) 7091{ 7092 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 7093 ipr_cmd->done = ipr_reset_ioa_job; 7094 7095 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 7096 ipr_cmd->timer.expires = jiffies + timeout; 7097 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 7098 add_timer(&ipr_cmd->timer); 7099} 7100 7101/** 7102 * ipr_init_ioa_mem - Initialize ioa_cfg control block 7103 * @ioa_cfg: ioa cfg struct 7104 * 7105 * Return value: 7106 * nothing 7107 **/ 7108static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 7109{ 7110 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); 7111 7112 /* Initialize Host RRQ pointers */ 7113 ioa_cfg->hrrq_start = ioa_cfg->host_rrq; 7114 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; 7115 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 7116 ioa_cfg->toggle_bit = 1; 7117 7118 /* Zero out config table */ 7119 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size); 7120} 7121 7122/** 7123 * ipr_reset_next_stage - Process IPL stage change based on feedback register. 7124 * @ipr_cmd: ipr command struct 7125 * 7126 * Return value: 7127 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7128 **/ 7129static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd) 7130{ 7131 unsigned long stage, stage_time; 7132 u32 feedback; 7133 volatile u32 int_reg; 7134 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7135 u64 maskval = 0; 7136 7137 feedback = readl(ioa_cfg->regs.init_feedback_reg); 7138 stage = feedback & IPR_IPL_INIT_STAGE_MASK; 7139 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK; 7140 7141 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time); 7142 7143 /* sanity check the stage_time value */ 7144 if (stage_time == 0) 7145 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME; 7146 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME) 7147 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME; 7148 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT) 7149 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT; 7150 7151 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) { 7152 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg); 7153 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7154 stage_time = ioa_cfg->transop_timeout; 7155 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 7156 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) { 7157 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 7158 maskval = IPR_PCII_IPL_STAGE_CHANGE; 7159 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER; 7160 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg); 7161 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7162 return IPR_RC_JOB_CONTINUE; 7163 } 7164 7165 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 7166 ipr_cmd->timer.expires = jiffies + stage_time * HZ; 7167 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 7168 ipr_cmd->done = ipr_reset_ioa_job; 7169 add_timer(&ipr_cmd->timer); 7170 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 7171 7172 return IPR_RC_JOB_RETURN; 7173} 7174 7175/** 7176 * ipr_reset_enable_ioa - Enable the IOA following a reset. 7177 * @ipr_cmd: ipr command struct 7178 * 7179 * This function reinitializes some control blocks and 7180 * enables destructive diagnostics on the adapter. 7181 * 7182 * Return value: 7183 * IPR_RC_JOB_RETURN 7184 **/ 7185static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 7186{ 7187 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7188 volatile u32 int_reg; 7189 volatile u64 maskval; 7190 7191 ENTER; 7192 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 7193 ipr_init_ioa_mem(ioa_cfg); 7194 7195 ioa_cfg->allow_interrupts = 1; 7196 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 7197 7198 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 7199 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 7200 ioa_cfg->regs.clr_interrupt_mask_reg32); 7201 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7202 return IPR_RC_JOB_CONTINUE; 7203 } 7204 7205 /* Enable destructive diagnostics on IOA */ 7206 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32); 7207 7208 if (ioa_cfg->sis64) { 7209 maskval = IPR_PCII_IPL_STAGE_CHANGE; 7210 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS; 7211 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg); 7212 } else 7213 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32); 7214 7215 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7216 7217 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 7218 7219 if (ioa_cfg->sis64) { 7220 ipr_cmd->job_step = ipr_reset_next_stage; 7221 return IPR_RC_JOB_CONTINUE; 7222 } 7223 7224 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 7225 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ); 7226 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 7227 ipr_cmd->done = ipr_reset_ioa_job; 7228 add_timer(&ipr_cmd->timer); 7229 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 7230 7231 LEAVE; 7232 return IPR_RC_JOB_RETURN; 7233} 7234 7235/** 7236 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 7237 * @ipr_cmd: ipr command struct 7238 * 7239 * This function is invoked when an adapter dump has run out 7240 * of processing time. 7241 * 7242 * Return value: 7243 * IPR_RC_JOB_CONTINUE 7244 **/ 7245static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 7246{ 7247 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7248 7249 if (ioa_cfg->sdt_state == GET_DUMP) 7250 ioa_cfg->sdt_state = ABORT_DUMP; 7251 7252 ipr_cmd->job_step = ipr_reset_alert; 7253 7254 return IPR_RC_JOB_CONTINUE; 7255} 7256 7257/** 7258 * ipr_unit_check_no_data - Log a unit check/no data error log 7259 * @ioa_cfg: ioa config struct 7260 * 7261 * Logs an error indicating the adapter unit checked, but for some 7262 * reason, we were unable to fetch the unit check buffer. 7263 * 7264 * Return value: 7265 * nothing 7266 **/ 7267static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 7268{ 7269 ioa_cfg->errors_logged++; 7270 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 7271} 7272 7273/** 7274 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 7275 * @ioa_cfg: ioa config struct 7276 * 7277 * Fetches the unit check buffer from the adapter by clocking the data 7278 * through the mailbox register. 7279 * 7280 * Return value: 7281 * nothing 7282 **/ 7283static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 7284{ 7285 unsigned long mailbox; 7286 struct ipr_hostrcb *hostrcb; 7287 struct ipr_uc_sdt sdt; 7288 int rc, length; 7289 u32 ioasc; 7290 7291 mailbox = readl(ioa_cfg->ioa_mailbox); 7292 7293 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) { 7294 ipr_unit_check_no_data(ioa_cfg); 7295 return; 7296 } 7297 7298 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 7299 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 7300 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 7301 7302 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) || 7303 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) && 7304 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) { 7305 ipr_unit_check_no_data(ioa_cfg); 7306 return; 7307 } 7308 7309 /* Find length of the first sdt entry (UC buffer) */ 7310 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE) 7311 length = be32_to_cpu(sdt.entry[0].end_token); 7312 else 7313 length = (be32_to_cpu(sdt.entry[0].end_token) - 7314 be32_to_cpu(sdt.entry[0].start_token)) & 7315 IPR_FMT2_MBX_ADDR_MASK; 7316 7317 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 7318 struct ipr_hostrcb, queue); 7319 list_del(&hostrcb->queue); 7320 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 7321 7322 rc = ipr_get_ldump_data_section(ioa_cfg, 7323 be32_to_cpu(sdt.entry[0].start_token), 7324 (__be32 *)&hostrcb->hcam, 7325 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 7326 7327 if (!rc) { 7328 ipr_handle_log_data(ioa_cfg, hostrcb); 7329 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 7330 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED && 7331 ioa_cfg->sdt_state == GET_DUMP) 7332 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 7333 } else 7334 ipr_unit_check_no_data(ioa_cfg); 7335 7336 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 7337} 7338 7339/** 7340 * ipr_reset_restore_cfg_space - Restore PCI config space. 7341 * @ipr_cmd: ipr command struct 7342 * 7343 * Description: This function restores the saved PCI config space of 7344 * the adapter, fails all outstanding ops back to the callers, and 7345 * fetches the dump/unit check if applicable to this reset. 7346 * 7347 * Return value: 7348 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7349 **/ 7350static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 7351{ 7352 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7353 int rc; 7354 7355 ENTER; 7356 ioa_cfg->pdev->state_saved = true; 7357 rc = pci_restore_state(ioa_cfg->pdev); 7358 7359 if (rc != PCIBIOS_SUCCESSFUL) { 7360 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 7361 return IPR_RC_JOB_CONTINUE; 7362 } 7363 7364 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 7365 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 7366 return IPR_RC_JOB_CONTINUE; 7367 } 7368 7369 ipr_fail_all_ops(ioa_cfg); 7370 7371 if (ioa_cfg->ioa_unit_checked) { 7372 ioa_cfg->ioa_unit_checked = 0; 7373 ipr_get_unit_check_buffer(ioa_cfg); 7374 ipr_cmd->job_step = ipr_reset_alert; 7375 ipr_reset_start_timer(ipr_cmd, 0); 7376 return IPR_RC_JOB_RETURN; 7377 } 7378 7379 if (ioa_cfg->in_ioa_bringdown) { 7380 ipr_cmd->job_step = ipr_ioa_bringdown_done; 7381 } else { 7382 ipr_cmd->job_step = ipr_reset_enable_ioa; 7383 7384 if (GET_DUMP == ioa_cfg->sdt_state) { 7385 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); 7386 ipr_cmd->job_step = ipr_reset_wait_for_dump; 7387 schedule_work(&ioa_cfg->work_q); 7388 return IPR_RC_JOB_RETURN; 7389 } 7390 } 7391 7392 LEAVE; 7393 return IPR_RC_JOB_CONTINUE; 7394} 7395 7396/** 7397 * ipr_reset_bist_done - BIST has completed on the adapter. 7398 * @ipr_cmd: ipr command struct 7399 * 7400 * Description: Unblock config space and resume the reset process. 7401 * 7402 * Return value: 7403 * IPR_RC_JOB_CONTINUE 7404 **/ 7405static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd) 7406{ 7407 ENTER; 7408 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 7409 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 7410 LEAVE; 7411 return IPR_RC_JOB_CONTINUE; 7412} 7413 7414/** 7415 * ipr_reset_start_bist - Run BIST on the adapter. 7416 * @ipr_cmd: ipr command struct 7417 * 7418 * Description: This function runs BIST on the adapter, then delays 2 seconds. 7419 * 7420 * Return value: 7421 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7422 **/ 7423static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 7424{ 7425 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7426 int rc; 7427 7428 ENTER; 7429 pci_block_user_cfg_access(ioa_cfg->pdev); 7430 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 7431 7432 if (rc != PCIBIOS_SUCCESSFUL) { 7433 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 7434 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 7435 rc = IPR_RC_JOB_CONTINUE; 7436 } else { 7437 ipr_cmd->job_step = ipr_reset_bist_done; 7438 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 7439 rc = IPR_RC_JOB_RETURN; 7440 } 7441 7442 LEAVE; 7443 return rc; 7444} 7445 7446/** 7447 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter 7448 * @ipr_cmd: ipr command struct 7449 * 7450 * Description: This clears PCI reset to the adapter and delays two seconds. 7451 * 7452 * Return value: 7453 * IPR_RC_JOB_RETURN 7454 **/ 7455static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd) 7456{ 7457 ENTER; 7458 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset); 7459 ipr_cmd->job_step = ipr_reset_bist_done; 7460 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 7461 LEAVE; 7462 return IPR_RC_JOB_RETURN; 7463} 7464 7465/** 7466 * ipr_reset_slot_reset - Reset the PCI slot of the adapter. 7467 * @ipr_cmd: ipr command struct 7468 * 7469 * Description: This asserts PCI reset to the adapter. 7470 * 7471 * Return value: 7472 * IPR_RC_JOB_RETURN 7473 **/ 7474static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd) 7475{ 7476 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7477 struct pci_dev *pdev = ioa_cfg->pdev; 7478 7479 ENTER; 7480 pci_block_user_cfg_access(pdev); 7481 pci_set_pcie_reset_state(pdev, pcie_warm_reset); 7482 ipr_cmd->job_step = ipr_reset_slot_reset_done; 7483 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT); 7484 LEAVE; 7485 return IPR_RC_JOB_RETURN; 7486} 7487 7488/** 7489 * ipr_reset_allowed - Query whether or not IOA can be reset 7490 * @ioa_cfg: ioa config struct 7491 * 7492 * Return value: 7493 * 0 if reset not allowed / non-zero if reset is allowed 7494 **/ 7495static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 7496{ 7497 volatile u32 temp_reg; 7498 7499 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 7500 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 7501} 7502 7503/** 7504 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 7505 * @ipr_cmd: ipr command struct 7506 * 7507 * Description: This function waits for adapter permission to run BIST, 7508 * then runs BIST. If the adapter does not give permission after a 7509 * reasonable time, we will reset the adapter anyway. The impact of 7510 * resetting the adapter without warning the adapter is the risk of 7511 * losing the persistent error log on the adapter. If the adapter is 7512 * reset while it is writing to the flash on the adapter, the flash 7513 * segment will have bad ECC and be zeroed. 7514 * 7515 * Return value: 7516 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7517 **/ 7518static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 7519{ 7520 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7521 int rc = IPR_RC_JOB_RETURN; 7522 7523 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 7524 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 7525 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 7526 } else { 7527 ipr_cmd->job_step = ioa_cfg->reset; 7528 rc = IPR_RC_JOB_CONTINUE; 7529 } 7530 7531 return rc; 7532} 7533 7534/** 7535 * ipr_reset_alert_part2 - Alert the adapter of a pending reset 7536 * @ipr_cmd: ipr command struct 7537 * 7538 * Description: This function alerts the adapter that it will be reset. 7539 * If memory space is not currently enabled, proceed directly 7540 * to running BIST on the adapter. The timer must always be started 7541 * so we guarantee we do not run BIST from ipr_isr. 7542 * 7543 * Return value: 7544 * IPR_RC_JOB_RETURN 7545 **/ 7546static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 7547{ 7548 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7549 u16 cmd_reg; 7550 int rc; 7551 7552 ENTER; 7553 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 7554 7555 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 7556 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 7557 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32); 7558 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 7559 } else { 7560 ipr_cmd->job_step = ioa_cfg->reset; 7561 } 7562 7563 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 7564 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 7565 7566 LEAVE; 7567 return IPR_RC_JOB_RETURN; 7568} 7569 7570/** 7571 * ipr_reset_ucode_download_done - Microcode download completion 7572 * @ipr_cmd: ipr command struct 7573 * 7574 * Description: This function unmaps the microcode download buffer. 7575 * 7576 * Return value: 7577 * IPR_RC_JOB_CONTINUE 7578 **/ 7579static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 7580{ 7581 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7582 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 7583 7584 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, 7585 sglist->num_sg, DMA_TO_DEVICE); 7586 7587 ipr_cmd->job_step = ipr_reset_alert; 7588 return IPR_RC_JOB_CONTINUE; 7589} 7590 7591/** 7592 * ipr_reset_ucode_download - Download microcode to the adapter 7593 * @ipr_cmd: ipr command struct 7594 * 7595 * Description: This function checks to see if it there is microcode 7596 * to download to the adapter. If there is, a download is performed. 7597 * 7598 * Return value: 7599 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7600 **/ 7601static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 7602{ 7603 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7604 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 7605 7606 ENTER; 7607 ipr_cmd->job_step = ipr_reset_alert; 7608 7609 if (!sglist) 7610 return IPR_RC_JOB_CONTINUE; 7611 7612 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7613 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 7614 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 7615 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 7616 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 7617 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 7618 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 7619 7620 if (ioa_cfg->sis64) 7621 ipr_build_ucode_ioadl64(ipr_cmd, sglist); 7622 else 7623 ipr_build_ucode_ioadl(ipr_cmd, sglist); 7624 ipr_cmd->job_step = ipr_reset_ucode_download_done; 7625 7626 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 7627 IPR_WRITE_BUFFER_TIMEOUT); 7628 7629 LEAVE; 7630 return IPR_RC_JOB_RETURN; 7631} 7632 7633/** 7634 * ipr_reset_shutdown_ioa - Shutdown the adapter 7635 * @ipr_cmd: ipr command struct 7636 * 7637 * Description: This function issues an adapter shutdown of the 7638 * specified type to the specified adapter as part of the 7639 * adapter reset job. 7640 * 7641 * Return value: 7642 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7643 **/ 7644static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 7645{ 7646 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7647 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 7648 unsigned long timeout; 7649 int rc = IPR_RC_JOB_CONTINUE; 7650 7651 ENTER; 7652 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { 7653 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7654 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7655 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 7656 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 7657 7658 if (shutdown_type == IPR_SHUTDOWN_NORMAL) 7659 timeout = IPR_SHUTDOWN_TIMEOUT; 7660 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 7661 timeout = IPR_INTERNAL_TIMEOUT; 7662 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 7663 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO; 7664 else 7665 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 7666 7667 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 7668 7669 rc = IPR_RC_JOB_RETURN; 7670 ipr_cmd->job_step = ipr_reset_ucode_download; 7671 } else 7672 ipr_cmd->job_step = ipr_reset_alert; 7673 7674 LEAVE; 7675 return rc; 7676} 7677 7678/** 7679 * ipr_reset_ioa_job - Adapter reset job 7680 * @ipr_cmd: ipr command struct 7681 * 7682 * Description: This function is the job router for the adapter reset job. 7683 * 7684 * Return value: 7685 * none 7686 **/ 7687static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 7688{ 7689 u32 rc, ioasc; 7690 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7691 7692 do { 7693 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7694 7695 if (ioa_cfg->reset_cmd != ipr_cmd) { 7696 /* 7697 * We are doing nested adapter resets and this is 7698 * not the current reset job. 7699 */ 7700 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 7701 return; 7702 } 7703 7704 if (IPR_IOASC_SENSE_KEY(ioasc)) { 7705 rc = ipr_cmd->job_step_failed(ipr_cmd); 7706 if (rc == IPR_RC_JOB_RETURN) 7707 return; 7708 } 7709 7710 ipr_reinit_ipr_cmnd(ipr_cmd); 7711 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 7712 rc = ipr_cmd->job_step(ipr_cmd); 7713 } while(rc == IPR_RC_JOB_CONTINUE); 7714} 7715 7716/** 7717 * _ipr_initiate_ioa_reset - Initiate an adapter reset 7718 * @ioa_cfg: ioa config struct 7719 * @job_step: first job step of reset job 7720 * @shutdown_type: shutdown type 7721 * 7722 * Description: This function will initiate the reset of the given adapter 7723 * starting at the selected job step. 7724 * If the caller needs to wait on the completion of the reset, 7725 * the caller must sleep on the reset_wait_q. 7726 * 7727 * Return value: 7728 * none 7729 **/ 7730static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 7731 int (*job_step) (struct ipr_cmnd *), 7732 enum ipr_shutdown_type shutdown_type) 7733{ 7734 struct ipr_cmnd *ipr_cmd; 7735 7736 ioa_cfg->in_reset_reload = 1; 7737 ioa_cfg->allow_cmds = 0; 7738 scsi_block_requests(ioa_cfg->host); 7739 7740 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 7741 ioa_cfg->reset_cmd = ipr_cmd; 7742 ipr_cmd->job_step = job_step; 7743 ipr_cmd->u.shutdown_type = shutdown_type; 7744 7745 ipr_reset_ioa_job(ipr_cmd); 7746} 7747 7748/** 7749 * ipr_initiate_ioa_reset - Initiate an adapter reset 7750 * @ioa_cfg: ioa config struct 7751 * @shutdown_type: shutdown type 7752 * 7753 * Description: This function will initiate the reset of the given adapter. 7754 * If the caller needs to wait on the completion of the reset, 7755 * the caller must sleep on the reset_wait_q. 7756 * 7757 * Return value: 7758 * none 7759 **/ 7760static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 7761 enum ipr_shutdown_type shutdown_type) 7762{ 7763 if (ioa_cfg->ioa_is_dead) 7764 return; 7765 7766 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) 7767 ioa_cfg->sdt_state = ABORT_DUMP; 7768 7769 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 7770 dev_err(&ioa_cfg->pdev->dev, 7771 "IOA taken offline - error recovery failed\n"); 7772 7773 ioa_cfg->reset_retries = 0; 7774 ioa_cfg->ioa_is_dead = 1; 7775 7776 if (ioa_cfg->in_ioa_bringdown) { 7777 ioa_cfg->reset_cmd = NULL; 7778 ioa_cfg->in_reset_reload = 0; 7779 ipr_fail_all_ops(ioa_cfg); 7780 wake_up_all(&ioa_cfg->reset_wait_q); 7781 7782 spin_unlock_irq(ioa_cfg->host->host_lock); 7783 scsi_unblock_requests(ioa_cfg->host); 7784 spin_lock_irq(ioa_cfg->host->host_lock); 7785 return; 7786 } else { 7787 ioa_cfg->in_ioa_bringdown = 1; 7788 shutdown_type = IPR_SHUTDOWN_NONE; 7789 } 7790 } 7791 7792 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 7793 shutdown_type); 7794} 7795 7796/** 7797 * ipr_reset_freeze - Hold off all I/O activity 7798 * @ipr_cmd: ipr command struct 7799 * 7800 * Description: If the PCI slot is frozen, hold off all I/O 7801 * activity; then, as soon as the slot is available again, 7802 * initiate an adapter reset. 7803 */ 7804static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 7805{ 7806 /* Disallow new interrupts, avoid loop */ 7807 ipr_cmd->ioa_cfg->allow_interrupts = 0; 7808 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 7809 ipr_cmd->done = ipr_reset_ioa_job; 7810 return IPR_RC_JOB_RETURN; 7811} 7812 7813/** 7814 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 7815 * @pdev: PCI device struct 7816 * 7817 * Description: This routine is called to tell us that the PCI bus 7818 * is down. Can't do anything here, except put the device driver 7819 * into a holding pattern, waiting for the PCI bus to come back. 7820 */ 7821static void ipr_pci_frozen(struct pci_dev *pdev) 7822{ 7823 unsigned long flags = 0; 7824 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7825 7826 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 7827 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 7828 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 7829} 7830 7831/** 7832 * ipr_pci_slot_reset - Called when PCI slot has been reset. 7833 * @pdev: PCI device struct 7834 * 7835 * Description: This routine is called by the pci error recovery 7836 * code after the PCI slot has been reset, just before we 7837 * should resume normal operations. 7838 */ 7839static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 7840{ 7841 unsigned long flags = 0; 7842 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7843 7844 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 7845 if (ioa_cfg->needs_warm_reset) 7846 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 7847 else 7848 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 7849 IPR_SHUTDOWN_NONE); 7850 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 7851 return PCI_ERS_RESULT_RECOVERED; 7852} 7853 7854/** 7855 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 7856 * @pdev: PCI device struct 7857 * 7858 * Description: This routine is called when the PCI bus has 7859 * permanently failed. 7860 */ 7861static void ipr_pci_perm_failure(struct pci_dev *pdev) 7862{ 7863 unsigned long flags = 0; 7864 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7865 7866 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 7867 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 7868 ioa_cfg->sdt_state = ABORT_DUMP; 7869 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES; 7870 ioa_cfg->in_ioa_bringdown = 1; 7871 ioa_cfg->allow_cmds = 0; 7872 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 7873 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 7874} 7875 7876/** 7877 * ipr_pci_error_detected - Called when a PCI error is detected. 7878 * @pdev: PCI device struct 7879 * @state: PCI channel state 7880 * 7881 * Description: Called when a PCI error is detected. 7882 * 7883 * Return value: 7884 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 7885 */ 7886static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 7887 pci_channel_state_t state) 7888{ 7889 switch (state) { 7890 case pci_channel_io_frozen: 7891 ipr_pci_frozen(pdev); 7892 return PCI_ERS_RESULT_NEED_RESET; 7893 case pci_channel_io_perm_failure: 7894 ipr_pci_perm_failure(pdev); 7895 return PCI_ERS_RESULT_DISCONNECT; 7896 break; 7897 default: 7898 break; 7899 } 7900 return PCI_ERS_RESULT_NEED_RESET; 7901} 7902 7903/** 7904 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 7905 * @ioa_cfg: ioa cfg struct 7906 * 7907 * Description: This is the second phase of adapter intialization 7908 * This function takes care of initilizing the adapter to the point 7909 * where it can accept new commands. 7910 7911 * Return value: 7912 * 0 on success / -EIO on failure 7913 **/ 7914static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 7915{ 7916 int rc = 0; 7917 unsigned long host_lock_flags = 0; 7918 7919 ENTER; 7920 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7921 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 7922 if (ioa_cfg->needs_hard_reset) { 7923 ioa_cfg->needs_hard_reset = 0; 7924 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 7925 } else 7926 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 7927 IPR_SHUTDOWN_NONE); 7928 7929 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7930 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7931 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7932 7933 if (ioa_cfg->ioa_is_dead) { 7934 rc = -EIO; 7935 } else if (ipr_invalid_adapter(ioa_cfg)) { 7936 if (!ipr_testmode) 7937 rc = -EIO; 7938 7939 dev_err(&ioa_cfg->pdev->dev, 7940 "Adapter not supported in this hardware configuration.\n"); 7941 } 7942 7943 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7944 7945 LEAVE; 7946 return rc; 7947} 7948 7949/** 7950 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 7951 * @ioa_cfg: ioa config struct 7952 * 7953 * Return value: 7954 * none 7955 **/ 7956static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 7957{ 7958 int i; 7959 7960 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 7961 if (ioa_cfg->ipr_cmnd_list[i]) 7962 pci_pool_free(ioa_cfg->ipr_cmd_pool, 7963 ioa_cfg->ipr_cmnd_list[i], 7964 ioa_cfg->ipr_cmnd_list_dma[i]); 7965 7966 ioa_cfg->ipr_cmnd_list[i] = NULL; 7967 } 7968 7969 if (ioa_cfg->ipr_cmd_pool) 7970 pci_pool_destroy (ioa_cfg->ipr_cmd_pool); 7971 7972 ioa_cfg->ipr_cmd_pool = NULL; 7973} 7974 7975/** 7976 * ipr_free_mem - Frees memory allocated for an adapter 7977 * @ioa_cfg: ioa cfg struct 7978 * 7979 * Return value: 7980 * nothing 7981 **/ 7982static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 7983{ 7984 int i; 7985 7986 kfree(ioa_cfg->res_entries); 7987 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), 7988 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 7989 ipr_free_cmd_blks(ioa_cfg); 7990 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 7991 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 7992 pci_free_consistent(ioa_cfg->pdev, ioa_cfg->cfg_table_size, 7993 ioa_cfg->u.cfg_table, 7994 ioa_cfg->cfg_table_dma); 7995 7996 for (i = 0; i < IPR_NUM_HCAMS; i++) { 7997 pci_free_consistent(ioa_cfg->pdev, 7998 sizeof(struct ipr_hostrcb), 7999 ioa_cfg->hostrcb[i], 8000 ioa_cfg->hostrcb_dma[i]); 8001 } 8002 8003 ipr_free_dump(ioa_cfg); 8004 kfree(ioa_cfg->trace); 8005} 8006 8007/** 8008 * ipr_free_all_resources - Free all allocated resources for an adapter. 8009 * @ipr_cmd: ipr command struct 8010 * 8011 * This function frees all allocated resources for the 8012 * specified adapter. 8013 * 8014 * Return value: 8015 * none 8016 **/ 8017static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 8018{ 8019 struct pci_dev *pdev = ioa_cfg->pdev; 8020 8021 ENTER; 8022 free_irq(pdev->irq, ioa_cfg); 8023 pci_disable_msi(pdev); 8024 iounmap(ioa_cfg->hdw_dma_regs); 8025 pci_release_regions(pdev); 8026 ipr_free_mem(ioa_cfg); 8027 scsi_host_put(ioa_cfg->host); 8028 pci_disable_device(pdev); 8029 LEAVE; 8030} 8031 8032/** 8033 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 8034 * @ioa_cfg: ioa config struct 8035 * 8036 * Return value: 8037 * 0 on success / -ENOMEM on allocation failure 8038 **/ 8039static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 8040{ 8041 struct ipr_cmnd *ipr_cmd; 8042 struct ipr_ioarcb *ioarcb; 8043 dma_addr_t dma_addr; 8044 int i; 8045 8046 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, 8047 sizeof(struct ipr_cmnd), 16, 0); 8048 8049 if (!ioa_cfg->ipr_cmd_pool) 8050 return -ENOMEM; 8051 8052 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 8053 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr); 8054 8055 if (!ipr_cmd) { 8056 ipr_free_cmd_blks(ioa_cfg); 8057 return -ENOMEM; 8058 } 8059 8060 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 8061 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 8062 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 8063 8064 ioarcb = &ipr_cmd->ioarcb; 8065 ipr_cmd->dma_addr = dma_addr; 8066 if (ioa_cfg->sis64) 8067 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr); 8068 else 8069 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 8070 8071 ioarcb->host_response_handle = cpu_to_be32(i << 2); 8072 if (ioa_cfg->sis64) { 8073 ioarcb->u.sis64_addr_data.data_ioadl_addr = 8074 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 8075 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr = 8076 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64)); 8077 } else { 8078 ioarcb->write_ioadl_addr = 8079 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 8080 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 8081 ioarcb->ioasa_host_pci_addr = 8082 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa)); 8083 } 8084 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 8085 ipr_cmd->cmd_index = i; 8086 ipr_cmd->ioa_cfg = ioa_cfg; 8087 ipr_cmd->sense_buffer_dma = dma_addr + 8088 offsetof(struct ipr_cmnd, sense_buffer); 8089 8090 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 8091 } 8092 8093 return 0; 8094} 8095 8096/** 8097 * ipr_alloc_mem - Allocate memory for an adapter 8098 * @ioa_cfg: ioa config struct 8099 * 8100 * Return value: 8101 * 0 on success / non-zero for error 8102 **/ 8103static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 8104{ 8105 struct pci_dev *pdev = ioa_cfg->pdev; 8106 int i, rc = -ENOMEM; 8107 8108 ENTER; 8109 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * 8110 ioa_cfg->max_devs_supported, GFP_KERNEL); 8111 8112 if (!ioa_cfg->res_entries) 8113 goto out; 8114 8115 if (ioa_cfg->sis64) { 8116 ioa_cfg->target_ids = kzalloc(sizeof(unsigned long) * 8117 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL); 8118 ioa_cfg->array_ids = kzalloc(sizeof(unsigned long) * 8119 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL); 8120 ioa_cfg->vset_ids = kzalloc(sizeof(unsigned long) * 8121 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL); 8122 } 8123 8124 for (i = 0; i < ioa_cfg->max_devs_supported; i++) { 8125 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 8126 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg; 8127 } 8128 8129 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, 8130 sizeof(struct ipr_misc_cbs), 8131 &ioa_cfg->vpd_cbs_dma); 8132 8133 if (!ioa_cfg->vpd_cbs) 8134 goto out_free_res_entries; 8135 8136 if (ipr_alloc_cmd_blks(ioa_cfg)) 8137 goto out_free_vpd_cbs; 8138 8139 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, 8140 sizeof(u32) * IPR_NUM_CMD_BLKS, 8141 &ioa_cfg->host_rrq_dma); 8142 8143 if (!ioa_cfg->host_rrq) 8144 goto out_ipr_free_cmd_blocks; 8145 8146 ioa_cfg->u.cfg_table = pci_alloc_consistent(ioa_cfg->pdev, 8147 ioa_cfg->cfg_table_size, 8148 &ioa_cfg->cfg_table_dma); 8149 8150 if (!ioa_cfg->u.cfg_table) 8151 goto out_free_host_rrq; 8152 8153 for (i = 0; i < IPR_NUM_HCAMS; i++) { 8154 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, 8155 sizeof(struct ipr_hostrcb), 8156 &ioa_cfg->hostrcb_dma[i]); 8157 8158 if (!ioa_cfg->hostrcb[i]) 8159 goto out_free_hostrcb_dma; 8160 8161 ioa_cfg->hostrcb[i]->hostrcb_dma = 8162 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 8163 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg; 8164 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 8165 } 8166 8167 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * 8168 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 8169 8170 if (!ioa_cfg->trace) 8171 goto out_free_hostrcb_dma; 8172 8173 rc = 0; 8174out: 8175 LEAVE; 8176 return rc; 8177 8178out_free_hostrcb_dma: 8179 while (i-- > 0) { 8180 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), 8181 ioa_cfg->hostrcb[i], 8182 ioa_cfg->hostrcb_dma[i]); 8183 } 8184 pci_free_consistent(pdev, ioa_cfg->cfg_table_size, 8185 ioa_cfg->u.cfg_table, 8186 ioa_cfg->cfg_table_dma); 8187out_free_host_rrq: 8188 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 8189 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 8190out_ipr_free_cmd_blocks: 8191 ipr_free_cmd_blks(ioa_cfg); 8192out_free_vpd_cbs: 8193 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), 8194 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 8195out_free_res_entries: 8196 kfree(ioa_cfg->res_entries); 8197 goto out; 8198} 8199 8200/** 8201 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 8202 * @ioa_cfg: ioa config struct 8203 * 8204 * Return value: 8205 * none 8206 **/ 8207static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 8208{ 8209 int i; 8210 8211 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 8212 ioa_cfg->bus_attr[i].bus = i; 8213 ioa_cfg->bus_attr[i].qas_enabled = 0; 8214 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 8215 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 8216 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 8217 else 8218 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 8219 } 8220} 8221 8222/** 8223 * ipr_init_ioa_cfg - Initialize IOA config struct 8224 * @ioa_cfg: ioa config struct 8225 * @host: scsi host struct 8226 * @pdev: PCI dev struct 8227 * 8228 * Return value: 8229 * none 8230 **/ 8231static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 8232 struct Scsi_Host *host, struct pci_dev *pdev) 8233{ 8234 const struct ipr_interrupt_offsets *p; 8235 struct ipr_interrupts *t; 8236 void __iomem *base; 8237 8238 ioa_cfg->host = host; 8239 ioa_cfg->pdev = pdev; 8240 ioa_cfg->log_level = ipr_log_level; 8241 ioa_cfg->doorbell = IPR_DOORBELL; 8242 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 8243 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 8244 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); 8245 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); 8246 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 8247 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 8248 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 8249 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 8250 8251 INIT_LIST_HEAD(&ioa_cfg->free_q); 8252 INIT_LIST_HEAD(&ioa_cfg->pending_q); 8253 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 8254 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 8255 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 8256 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 8257 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread); 8258 init_waitqueue_head(&ioa_cfg->reset_wait_q); 8259 init_waitqueue_head(&ioa_cfg->msi_wait_q); 8260 ioa_cfg->sdt_state = INACTIVE; 8261 8262 ipr_initialize_bus_attr(ioa_cfg); 8263 ioa_cfg->max_devs_supported = ipr_max_devs; 8264 8265 if (ioa_cfg->sis64) { 8266 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS; 8267 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET; 8268 if (ipr_max_devs > IPR_MAX_SIS64_DEVS) 8269 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS; 8270 } else { 8271 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 8272 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 8273 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS) 8274 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS; 8275 } 8276 host->max_channel = IPR_MAX_BUS_TO_SCAN; 8277 host->unique_id = host->host_no; 8278 host->max_cmd_len = IPR_MAX_CDB_LEN; 8279 pci_set_drvdata(pdev, ioa_cfg); 8280 8281 p = &ioa_cfg->chip_cfg->regs; 8282 t = &ioa_cfg->regs; 8283 base = ioa_cfg->hdw_dma_regs; 8284 8285 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 8286 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 8287 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32; 8288 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 8289 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32; 8290 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 8291 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32; 8292 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 8293 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32; 8294 t->ioarrin_reg = base + p->ioarrin_reg; 8295 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 8296 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32; 8297 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 8298 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32; 8299 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 8300 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32; 8301 8302 if (ioa_cfg->sis64) { 8303 t->init_feedback_reg = base + p->init_feedback_reg; 8304 t->dump_addr_reg = base + p->dump_addr_reg; 8305 t->dump_data_reg = base + p->dump_data_reg; 8306 } 8307} 8308 8309/** 8310 * ipr_get_chip_info - Find adapter chip information 8311 * @dev_id: PCI device id struct 8312 * 8313 * Return value: 8314 * ptr to chip information on success / NULL on failure 8315 **/ 8316static const struct ipr_chip_t * __devinit 8317ipr_get_chip_info(const struct pci_device_id *dev_id) 8318{ 8319 int i; 8320 8321 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 8322 if (ipr_chip[i].vendor == dev_id->vendor && 8323 ipr_chip[i].device == dev_id->device) 8324 return &ipr_chip[i]; 8325 return NULL; 8326} 8327 8328/** 8329 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi(). 8330 * @pdev: PCI device struct 8331 * 8332 * Description: Simply set the msi_received flag to 1 indicating that 8333 * Message Signaled Interrupts are supported. 8334 * 8335 * Return value: 8336 * 0 on success / non-zero on failure 8337 **/ 8338static irqreturn_t __devinit ipr_test_intr(int irq, void *devp) 8339{ 8340 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 8341 unsigned long lock_flags = 0; 8342 irqreturn_t rc = IRQ_HANDLED; 8343 8344 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8345 8346 ioa_cfg->msi_received = 1; 8347 wake_up(&ioa_cfg->msi_wait_q); 8348 8349 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8350 return rc; 8351} 8352 8353/** 8354 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support. 8355 * @pdev: PCI device struct 8356 * 8357 * Description: The return value from pci_enable_msi() can not always be 8358 * trusted. This routine sets up and initiates a test interrupt to determine 8359 * if the interrupt is received via the ipr_test_intr() service routine. 8360 * If the tests fails, the driver will fall back to LSI. 8361 * 8362 * Return value: 8363 * 0 on success / non-zero on failure 8364 **/ 8365static int __devinit ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, 8366 struct pci_dev *pdev) 8367{ 8368 int rc; 8369 volatile u32 int_reg; 8370 unsigned long lock_flags = 0; 8371 8372 ENTER; 8373 8374 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8375 init_waitqueue_head(&ioa_cfg->msi_wait_q); 8376 ioa_cfg->msi_received = 0; 8377 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 8378 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32); 8379 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8380 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8381 8382 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg); 8383 if (rc) { 8384 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq); 8385 return rc; 8386 } else if (ipr_debug) 8387 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq); 8388 8389 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32); 8390 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 8391 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ); 8392 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 8393 8394 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8395 if (!ioa_cfg->msi_received) { 8396 /* MSI test failed */ 8397 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n"); 8398 rc = -EOPNOTSUPP; 8399 } else if (ipr_debug) 8400 dev_info(&pdev->dev, "MSI test succeeded.\n"); 8401 8402 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8403 8404 free_irq(pdev->irq, ioa_cfg); 8405 8406 LEAVE; 8407 8408 return rc; 8409} 8410 8411/** 8412 * ipr_probe_ioa - Allocates memory and does first stage of initialization 8413 * @pdev: PCI device struct 8414 * @dev_id: PCI device id struct 8415 * 8416 * Return value: 8417 * 0 on success / non-zero on failure 8418 **/ 8419static int __devinit ipr_probe_ioa(struct pci_dev *pdev, 8420 const struct pci_device_id *dev_id) 8421{ 8422 struct ipr_ioa_cfg *ioa_cfg; 8423 struct Scsi_Host *host; 8424 unsigned long ipr_regs_pci; 8425 void __iomem *ipr_regs; 8426 int rc = PCIBIOS_SUCCESSFUL; 8427 volatile u32 mask, uproc, interrupts; 8428 8429 ENTER; 8430 8431 if ((rc = pci_enable_device(pdev))) { 8432 dev_err(&pdev->dev, "Cannot enable adapter\n"); 8433 goto out; 8434 } 8435 8436 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 8437 8438 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 8439 8440 if (!host) { 8441 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 8442 rc = -ENOMEM; 8443 goto out_disable; 8444 } 8445 8446 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 8447 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 8448 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, 8449 sata_port_info.flags, &ipr_sata_ops); 8450 8451 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id); 8452 8453 if (!ioa_cfg->ipr_chip) { 8454 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 8455 dev_id->vendor, dev_id->device); 8456 goto out_scsi_host_put; 8457 } 8458 8459 /* set SIS 32 or SIS 64 */ 8460 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0; 8461 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg; 8462 8463 if (ipr_transop_timeout) 8464 ioa_cfg->transop_timeout = ipr_transop_timeout; 8465 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT) 8466 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT; 8467 else 8468 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT; 8469 8470 ioa_cfg->revid = pdev->revision; 8471 8472 ipr_regs_pci = pci_resource_start(pdev, 0); 8473 8474 rc = pci_request_regions(pdev, IPR_NAME); 8475 if (rc < 0) { 8476 dev_err(&pdev->dev, 8477 "Couldn't register memory range of registers\n"); 8478 goto out_scsi_host_put; 8479 } 8480 8481 ipr_regs = pci_ioremap_bar(pdev, 0); 8482 8483 if (!ipr_regs) { 8484 dev_err(&pdev->dev, 8485 "Couldn't map memory range of registers\n"); 8486 rc = -ENOMEM; 8487 goto out_release_regions; 8488 } 8489 8490 ioa_cfg->hdw_dma_regs = ipr_regs; 8491 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 8492 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 8493 8494 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 8495 8496 pci_set_master(pdev); 8497 8498 if (ioa_cfg->sis64) { 8499 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 8500 if (rc < 0) { 8501 dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n"); 8502 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 8503 } 8504 8505 } else 8506 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 8507 8508 if (rc < 0) { 8509 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); 8510 goto cleanup_nomem; 8511 } 8512 8513 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 8514 ioa_cfg->chip_cfg->cache_line_size); 8515 8516 if (rc != PCIBIOS_SUCCESSFUL) { 8517 dev_err(&pdev->dev, "Write of cache line size failed\n"); 8518 rc = -EIO; 8519 goto cleanup_nomem; 8520 } 8521 8522 /* Enable MSI style interrupts if they are supported. */ 8523 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) { 8524 rc = ipr_test_msi(ioa_cfg, pdev); 8525 if (rc == -EOPNOTSUPP) 8526 pci_disable_msi(pdev); 8527 else if (rc) 8528 goto out_msi_disable; 8529 else 8530 dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq); 8531 } else if (ipr_debug) 8532 dev_info(&pdev->dev, "Cannot enable MSI.\n"); 8533 8534 /* Save away PCI config space for use following IOA reset */ 8535 rc = pci_save_state(pdev); 8536 8537 if (rc != PCIBIOS_SUCCESSFUL) { 8538 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 8539 rc = -EIO; 8540 goto cleanup_nomem; 8541 } 8542 8543 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 8544 goto cleanup_nomem; 8545 8546 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 8547 goto cleanup_nomem; 8548 8549 if (ioa_cfg->sis64) 8550 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64) 8551 + ((sizeof(struct ipr_config_table_entry64) 8552 * ioa_cfg->max_devs_supported))); 8553 else 8554 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr) 8555 + ((sizeof(struct ipr_config_table_entry) 8556 * ioa_cfg->max_devs_supported))); 8557 8558 rc = ipr_alloc_mem(ioa_cfg); 8559 if (rc < 0) { 8560 dev_err(&pdev->dev, 8561 "Couldn't allocate enough memory for device driver!\n"); 8562 goto cleanup_nomem; 8563 } 8564 8565 /* 8566 * If HRRQ updated interrupt is not masked, or reset alert is set, 8567 * the card is in an unknown state and needs a hard reset 8568 */ 8569 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 8570 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32); 8571 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); 8572 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 8573 ioa_cfg->needs_hard_reset = 1; 8574 if (interrupts & IPR_PCII_ERROR_INTERRUPTS) 8575 ioa_cfg->needs_hard_reset = 1; 8576 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED) 8577 ioa_cfg->ioa_unit_checked = 1; 8578 8579 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 8580 rc = request_irq(pdev->irq, ipr_isr, 8581 ioa_cfg->msi_received ? 0 : IRQF_SHARED, 8582 IPR_NAME, ioa_cfg); 8583 8584 if (rc) { 8585 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 8586 pdev->irq, rc); 8587 goto cleanup_nolog; 8588 } 8589 8590 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) || 8591 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) { 8592 ioa_cfg->needs_warm_reset = 1; 8593 ioa_cfg->reset = ipr_reset_slot_reset; 8594 } else 8595 ioa_cfg->reset = ipr_reset_start_bist; 8596 8597 spin_lock(&ipr_driver_lock); 8598 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 8599 spin_unlock(&ipr_driver_lock); 8600 8601 LEAVE; 8602out: 8603 return rc; 8604 8605cleanup_nolog: 8606 ipr_free_mem(ioa_cfg); 8607cleanup_nomem: 8608 iounmap(ipr_regs); 8609out_msi_disable: 8610 pci_disable_msi(pdev); 8611out_release_regions: 8612 pci_release_regions(pdev); 8613out_scsi_host_put: 8614 scsi_host_put(host); 8615out_disable: 8616 pci_disable_device(pdev); 8617 goto out; 8618} 8619 8620/** 8621 * ipr_scan_vsets - Scans for VSET devices 8622 * @ioa_cfg: ioa config struct 8623 * 8624 * Description: Since the VSET resources do not follow SAM in that we can have 8625 * sparse LUNs with no LUN 0, we have to scan for these ourselves. 8626 * 8627 * Return value: 8628 * none 8629 **/ 8630static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) 8631{ 8632 int target, lun; 8633 8634 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) 8635 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) 8636 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); 8637} 8638 8639/** 8640 * ipr_initiate_ioa_bringdown - Bring down an adapter 8641 * @ioa_cfg: ioa config struct 8642 * @shutdown_type: shutdown type 8643 * 8644 * Description: This function will initiate bringing down the adapter. 8645 * This consists of issuing an IOA shutdown to the adapter 8646 * to flush the cache, and running BIST. 8647 * If the caller needs to wait on the completion of the reset, 8648 * the caller must sleep on the reset_wait_q. 8649 * 8650 * Return value: 8651 * none 8652 **/ 8653static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 8654 enum ipr_shutdown_type shutdown_type) 8655{ 8656 ENTER; 8657 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 8658 ioa_cfg->sdt_state = ABORT_DUMP; 8659 ioa_cfg->reset_retries = 0; 8660 ioa_cfg->in_ioa_bringdown = 1; 8661 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 8662 LEAVE; 8663} 8664 8665/** 8666 * __ipr_remove - Remove a single adapter 8667 * @pdev: pci device struct 8668 * 8669 * Adapter hot plug remove entry point. 8670 * 8671 * Return value: 8672 * none 8673 **/ 8674static void __ipr_remove(struct pci_dev *pdev) 8675{ 8676 unsigned long host_lock_flags = 0; 8677 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8678 ENTER; 8679 8680 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 8681 while(ioa_cfg->in_reset_reload) { 8682 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 8683 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 8684 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 8685 } 8686 8687 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 8688 8689 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 8690 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 8691 flush_scheduled_work(); 8692 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 8693 8694 spin_lock(&ipr_driver_lock); 8695 list_del(&ioa_cfg->queue); 8696 spin_unlock(&ipr_driver_lock); 8697 8698 if (ioa_cfg->sdt_state == ABORT_DUMP) 8699 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 8700 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 8701 8702 ipr_free_all_resources(ioa_cfg); 8703 8704 LEAVE; 8705} 8706 8707/** 8708 * ipr_remove - IOA hot plug remove entry point 8709 * @pdev: pci device struct 8710 * 8711 * Adapter hot plug remove entry point. 8712 * 8713 * Return value: 8714 * none 8715 **/ 8716static void __devexit ipr_remove(struct pci_dev *pdev) 8717{ 8718 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8719 8720 ENTER; 8721 8722 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 8723 &ipr_trace_attr); 8724 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj, 8725 &ipr_dump_attr); 8726 scsi_remove_host(ioa_cfg->host); 8727 8728 __ipr_remove(pdev); 8729 8730 LEAVE; 8731} 8732 8733/** 8734 * ipr_probe - Adapter hot plug add entry point 8735 * 8736 * Return value: 8737 * 0 on success / non-zero on failure 8738 **/ 8739static int __devinit ipr_probe(struct pci_dev *pdev, 8740 const struct pci_device_id *dev_id) 8741{ 8742 struct ipr_ioa_cfg *ioa_cfg; 8743 int rc; 8744 8745 rc = ipr_probe_ioa(pdev, dev_id); 8746 8747 if (rc) 8748 return rc; 8749 8750 ioa_cfg = pci_get_drvdata(pdev); 8751 rc = ipr_probe_ioa_part2(ioa_cfg); 8752 8753 if (rc) { 8754 __ipr_remove(pdev); 8755 return rc; 8756 } 8757 8758 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 8759 8760 if (rc) { 8761 __ipr_remove(pdev); 8762 return rc; 8763 } 8764 8765 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj, 8766 &ipr_trace_attr); 8767 8768 if (rc) { 8769 scsi_remove_host(ioa_cfg->host); 8770 __ipr_remove(pdev); 8771 return rc; 8772 } 8773 8774 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj, 8775 &ipr_dump_attr); 8776 8777 if (rc) { 8778 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 8779 &ipr_trace_attr); 8780 scsi_remove_host(ioa_cfg->host); 8781 __ipr_remove(pdev); 8782 return rc; 8783 } 8784 8785 scsi_scan_host(ioa_cfg->host); 8786 ipr_scan_vsets(ioa_cfg); 8787 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); 8788 ioa_cfg->allow_ml_add_del = 1; 8789 ioa_cfg->host->max_channel = IPR_VSET_BUS; 8790 schedule_work(&ioa_cfg->work_q); 8791 return 0; 8792} 8793 8794/** 8795 * ipr_shutdown - Shutdown handler. 8796 * @pdev: pci device struct 8797 * 8798 * This function is invoked upon system shutdown/reboot. It will issue 8799 * an adapter shutdown to the adapter to flush the write cache. 8800 * 8801 * Return value: 8802 * none 8803 **/ 8804static void ipr_shutdown(struct pci_dev *pdev) 8805{ 8806 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8807 unsigned long lock_flags = 0; 8808 8809 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8810 while(ioa_cfg->in_reset_reload) { 8811 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8812 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 8813 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8814 } 8815 8816 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 8817 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8818 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 8819} 8820 8821static struct pci_device_id ipr_pci_table[] __devinitdata = { 8822 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 8823 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 }, 8824 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 8825 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 }, 8826 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 8827 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 }, 8828 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 8829 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 }, 8830 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 8831 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 }, 8832 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 8833 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 }, 8834 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 8835 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 }, 8836 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 8837 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 8838 IPR_USE_LONG_TRANSOP_TIMEOUT }, 8839 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 8840 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 8841 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 8842 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 8843 IPR_USE_LONG_TRANSOP_TIMEOUT }, 8844 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 8845 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 8846 IPR_USE_LONG_TRANSOP_TIMEOUT }, 8847 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 8848 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 8849 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 8850 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 8851 IPR_USE_LONG_TRANSOP_TIMEOUT}, 8852 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 8853 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 8854 IPR_USE_LONG_TRANSOP_TIMEOUT }, 8855 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 8856 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 8857 IPR_USE_LONG_TRANSOP_TIMEOUT }, 8858 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 8859 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 }, 8860 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 8861 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 8862 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET }, 8863 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 8864 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 }, 8865 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 8866 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 }, 8867 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 8868 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 8869 IPR_USE_LONG_TRANSOP_TIMEOUT }, 8870 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 8871 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 8872 IPR_USE_LONG_TRANSOP_TIMEOUT }, 8873 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 8874 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 }, 8875 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 8876 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 }, 8877 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 8878 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 }, 8879 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, 8880 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 }, 8881 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, 8882 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 }, 8883 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, 8884 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 }, 8885 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, 8886 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0, 0 }, 8887 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, 8888 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 }, 8889 { } 8890}; 8891MODULE_DEVICE_TABLE(pci, ipr_pci_table); 8892 8893static struct pci_error_handlers ipr_err_handler = { 8894 .error_detected = ipr_pci_error_detected, 8895 .slot_reset = ipr_pci_slot_reset, 8896}; 8897 8898static struct pci_driver ipr_driver = { 8899 .name = IPR_NAME, 8900 .id_table = ipr_pci_table, 8901 .probe = ipr_probe, 8902 .remove = __devexit_p(ipr_remove), 8903 .shutdown = ipr_shutdown, 8904 .err_handler = &ipr_err_handler, 8905}; 8906 8907/** 8908 * ipr_halt_done - Shutdown prepare completion 8909 * 8910 * Return value: 8911 * none 8912 **/ 8913static void ipr_halt_done(struct ipr_cmnd *ipr_cmd) 8914{ 8915 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8916 8917 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 8918} 8919 8920/** 8921 * ipr_halt - Issue shutdown prepare to all adapters 8922 * 8923 * Return value: 8924 * NOTIFY_OK on success / NOTIFY_DONE on failure 8925 **/ 8926static int ipr_halt(struct notifier_block *nb, ulong event, void *buf) 8927{ 8928 struct ipr_cmnd *ipr_cmd; 8929 struct ipr_ioa_cfg *ioa_cfg; 8930 unsigned long flags = 0; 8931 8932 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF) 8933 return NOTIFY_DONE; 8934 8935 spin_lock(&ipr_driver_lock); 8936 8937 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) { 8938 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 8939 if (!ioa_cfg->allow_cmds) { 8940 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 8941 continue; 8942 } 8943 8944 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 8945 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 8946 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 8947 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 8948 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 8949 8950 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 8951 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 8952 } 8953 spin_unlock(&ipr_driver_lock); 8954 8955 return NOTIFY_OK; 8956} 8957 8958static struct notifier_block ipr_notifier = { 8959 ipr_halt, NULL, 0 8960}; 8961 8962/** 8963 * ipr_init - Module entry point 8964 * 8965 * Return value: 8966 * 0 on success / negative value on failure 8967 **/ 8968static int __init ipr_init(void) 8969{ 8970 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 8971 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 8972 8973 register_reboot_notifier(&ipr_notifier); 8974 return pci_register_driver(&ipr_driver); 8975} 8976 8977/** 8978 * ipr_exit - Module unload 8979 * 8980 * Module unload entry point. 8981 * 8982 * Return value: 8983 * none 8984 **/ 8985static void __exit ipr_exit(void) 8986{ 8987 unregister_reboot_notifier(&ipr_notifier); 8988 pci_unregister_driver(&ipr_driver); 8989} 8990 8991module_init(ipr_init); 8992module_exit(ipr_exit); 8993