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/vmalloc.h> 64 #include <linux/ioport.h> 65 #include <linux/delay.h> 66 #include <linux/pci.h> 67 #include <linux/wait.h> 68 #include <linux/spinlock.h> 69 #include <linux/sched.h> 70 #include <linux/interrupt.h> 71 #include <linux/blkdev.h> 72 #include <linux/firmware.h> 73 #include <linux/module.h> 74 #include <linux/moduleparam.h> 75 #include <linux/libata.h> 76 #include <linux/hdreg.h> 77 #include <linux/reboot.h> 78 #include <linux/stringify.h> 79 #include <asm/io.h> 80 #include <asm/irq.h> 81 #include <asm/processor.h> 82 #include <scsi/scsi.h> 83 #include <scsi/scsi_host.h> 84 #include <scsi/scsi_tcq.h> 85 #include <scsi/scsi_eh.h> 86 #include <scsi/scsi_cmnd.h> 87 #include "ipr.h" 88 89 /* 90 * Global Data 91 */ 92 static LIST_HEAD(ipr_ioa_head); 93 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL; 94 static unsigned int ipr_max_speed = 1; 95 static int ipr_testmode = 0; 96 static unsigned int ipr_fastfail = 0; 97 static unsigned int ipr_transop_timeout = 0; 98 static unsigned int ipr_debug = 0; 99 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS; 100 static unsigned int ipr_dual_ioa_raid = 1; 101 static unsigned int ipr_number_of_msix = 16; 102 static unsigned int ipr_fast_reboot; 103 static DEFINE_SPINLOCK(ipr_driver_lock); 104 105 /* This table describes the differences between DMA controller chips */ 106 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { 107 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */ 108 .mailbox = 0x0042C, 109 .max_cmds = 100, 110 .cache_line_size = 0x20, 111 .clear_isr = 1, 112 .iopoll_weight = 0, 113 { 114 .set_interrupt_mask_reg = 0x0022C, 115 .clr_interrupt_mask_reg = 0x00230, 116 .clr_interrupt_mask_reg32 = 0x00230, 117 .sense_interrupt_mask_reg = 0x0022C, 118 .sense_interrupt_mask_reg32 = 0x0022C, 119 .clr_interrupt_reg = 0x00228, 120 .clr_interrupt_reg32 = 0x00228, 121 .sense_interrupt_reg = 0x00224, 122 .sense_interrupt_reg32 = 0x00224, 123 .ioarrin_reg = 0x00404, 124 .sense_uproc_interrupt_reg = 0x00214, 125 .sense_uproc_interrupt_reg32 = 0x00214, 126 .set_uproc_interrupt_reg = 0x00214, 127 .set_uproc_interrupt_reg32 = 0x00214, 128 .clr_uproc_interrupt_reg = 0x00218, 129 .clr_uproc_interrupt_reg32 = 0x00218 130 } 131 }, 132 { /* Snipe and Scamp */ 133 .mailbox = 0x0052C, 134 .max_cmds = 100, 135 .cache_line_size = 0x20, 136 .clear_isr = 1, 137 .iopoll_weight = 0, 138 { 139 .set_interrupt_mask_reg = 0x00288, 140 .clr_interrupt_mask_reg = 0x0028C, 141 .clr_interrupt_mask_reg32 = 0x0028C, 142 .sense_interrupt_mask_reg = 0x00288, 143 .sense_interrupt_mask_reg32 = 0x00288, 144 .clr_interrupt_reg = 0x00284, 145 .clr_interrupt_reg32 = 0x00284, 146 .sense_interrupt_reg = 0x00280, 147 .sense_interrupt_reg32 = 0x00280, 148 .ioarrin_reg = 0x00504, 149 .sense_uproc_interrupt_reg = 0x00290, 150 .sense_uproc_interrupt_reg32 = 0x00290, 151 .set_uproc_interrupt_reg = 0x00290, 152 .set_uproc_interrupt_reg32 = 0x00290, 153 .clr_uproc_interrupt_reg = 0x00294, 154 .clr_uproc_interrupt_reg32 = 0x00294 155 } 156 }, 157 { /* CRoC */ 158 .mailbox = 0x00044, 159 .max_cmds = 1000, 160 .cache_line_size = 0x20, 161 .clear_isr = 0, 162 .iopoll_weight = 64, 163 { 164 .set_interrupt_mask_reg = 0x00010, 165 .clr_interrupt_mask_reg = 0x00018, 166 .clr_interrupt_mask_reg32 = 0x0001C, 167 .sense_interrupt_mask_reg = 0x00010, 168 .sense_interrupt_mask_reg32 = 0x00014, 169 .clr_interrupt_reg = 0x00008, 170 .clr_interrupt_reg32 = 0x0000C, 171 .sense_interrupt_reg = 0x00000, 172 .sense_interrupt_reg32 = 0x00004, 173 .ioarrin_reg = 0x00070, 174 .sense_uproc_interrupt_reg = 0x00020, 175 .sense_uproc_interrupt_reg32 = 0x00024, 176 .set_uproc_interrupt_reg = 0x00020, 177 .set_uproc_interrupt_reg32 = 0x00024, 178 .clr_uproc_interrupt_reg = 0x00028, 179 .clr_uproc_interrupt_reg32 = 0x0002C, 180 .init_feedback_reg = 0x0005C, 181 .dump_addr_reg = 0x00064, 182 .dump_data_reg = 0x00068, 183 .endian_swap_reg = 0x00084 184 } 185 }, 186 }; 187 188 static const struct ipr_chip_t ipr_chip[] = { 189 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 190 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 191 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 192 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 193 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, true, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 194 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] }, 195 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] }, 196 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }, 197 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }, 198 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] } 199 }; 200 201 static int ipr_max_bus_speeds[] = { 202 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE 203 }; 204 205 MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); 206 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); 207 module_param_named(max_speed, ipr_max_speed, uint, 0); 208 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); 209 module_param_named(log_level, ipr_log_level, uint, 0); 210 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); 211 module_param_named(testmode, ipr_testmode, int, 0); 212 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); 213 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR); 214 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); 215 module_param_named(transop_timeout, ipr_transop_timeout, int, 0); 216 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); 217 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR); 218 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)"); 219 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0); 220 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)"); 221 module_param_named(max_devs, ipr_max_devs, int, 0); 222 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. " 223 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]"); 224 module_param_named(number_of_msix, ipr_number_of_msix, int, 0); 225 MODULE_PARM_DESC(number_of_msix, "Specify the number of MSIX interrupts to use on capable adapters (1 - 16). (default:16)"); 226 module_param_named(fast_reboot, ipr_fast_reboot, int, S_IRUGO | S_IWUSR); 227 MODULE_PARM_DESC(fast_reboot, "Skip adapter shutdown during reboot. Set to 1 to enable. (default: 0)"); 228 MODULE_LICENSE("GPL"); 229 MODULE_VERSION(IPR_DRIVER_VERSION); 230 231 /* A constant array of IOASCs/URCs/Error Messages */ 232 static const 233 struct ipr_error_table_t ipr_error_table[] = { 234 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL, 235 "8155: An unknown error was received"}, 236 {0x00330000, 0, 0, 237 "Soft underlength error"}, 238 {0x005A0000, 0, 0, 239 "Command to be cancelled not found"}, 240 {0x00808000, 0, 0, 241 "Qualified success"}, 242 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL, 243 "FFFE: Soft device bus error recovered by the IOA"}, 244 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL, 245 "4101: Soft device bus fabric error"}, 246 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL, 247 "FFFC: Logical block guard error recovered by the device"}, 248 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL, 249 "FFFC: Logical block reference tag error recovered by the device"}, 250 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL, 251 "4171: Recovered scatter list tag / sequence number error"}, 252 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL, 253 "FF3D: Recovered logical block CRC error on IOA to Host transfer"}, 254 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL, 255 "4171: Recovered logical block sequence number error on IOA to Host transfer"}, 256 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL, 257 "FFFD: Recovered logical block reference tag error detected by the IOA"}, 258 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL, 259 "FFFD: Logical block guard error recovered by the IOA"}, 260 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL, 261 "FFF9: Device sector reassign successful"}, 262 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL, 263 "FFF7: Media error recovered by device rewrite procedures"}, 264 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL, 265 "7001: IOA sector reassignment successful"}, 266 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL, 267 "FFF9: Soft media error. Sector reassignment recommended"}, 268 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL, 269 "FFF7: Media error recovered by IOA rewrite procedures"}, 270 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL, 271 "FF3D: Soft PCI bus error recovered by the IOA"}, 272 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL, 273 "FFF6: Device hardware error recovered by the IOA"}, 274 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL, 275 "FFF6: Device hardware error recovered by the device"}, 276 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL, 277 "FF3D: Soft IOA error recovered by the IOA"}, 278 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL, 279 "FFFA: Undefined device response recovered by the IOA"}, 280 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL, 281 "FFF6: Device bus error, message or command phase"}, 282 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL, 283 "FFFE: Task Management Function failed"}, 284 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL, 285 "FFF6: Failure prediction threshold exceeded"}, 286 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL, 287 "8009: Impending cache battery pack failure"}, 288 {0x02040100, 0, 0, 289 "Logical Unit in process of becoming ready"}, 290 {0x02040200, 0, 0, 291 "Initializing command required"}, 292 {0x02040400, 0, 0, 293 "34FF: Disk device format in progress"}, 294 {0x02040C00, 0, 0, 295 "Logical unit not accessible, target port in unavailable state"}, 296 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL, 297 "9070: IOA requested reset"}, 298 {0x023F0000, 0, 0, 299 "Synchronization required"}, 300 {0x02408500, 0, 0, 301 "IOA microcode download required"}, 302 {0x02408600, 0, 0, 303 "Device bus connection is prohibited by host"}, 304 {0x024E0000, 0, 0, 305 "No ready, IOA shutdown"}, 306 {0x025A0000, 0, 0, 307 "Not ready, IOA has been shutdown"}, 308 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL, 309 "3020: Storage subsystem configuration error"}, 310 {0x03110B00, 0, 0, 311 "FFF5: Medium error, data unreadable, recommend reassign"}, 312 {0x03110C00, 0, 0, 313 "7000: Medium error, data unreadable, do not reassign"}, 314 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL, 315 "FFF3: Disk media format bad"}, 316 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL, 317 "3002: Addressed device failed to respond to selection"}, 318 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL, 319 "3100: Device bus error"}, 320 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL, 321 "3109: IOA timed out a device command"}, 322 {0x04088000, 0, 0, 323 "3120: SCSI bus is not operational"}, 324 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL, 325 "4100: Hard device bus fabric error"}, 326 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL, 327 "310C: Logical block guard error detected by the device"}, 328 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL, 329 "310C: Logical block reference tag error detected by the device"}, 330 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL, 331 "4170: Scatter list tag / sequence number error"}, 332 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL, 333 "8150: Logical block CRC error on IOA to Host transfer"}, 334 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL, 335 "4170: Logical block sequence number error on IOA to Host transfer"}, 336 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL, 337 "310D: Logical block reference tag error detected by the IOA"}, 338 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL, 339 "310D: Logical block guard error detected by the IOA"}, 340 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL, 341 "9000: IOA reserved area data check"}, 342 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL, 343 "9001: IOA reserved area invalid data pattern"}, 344 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL, 345 "9002: IOA reserved area LRC error"}, 346 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL, 347 "Hardware Error, IOA metadata access error"}, 348 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL, 349 "102E: Out of alternate sectors for disk storage"}, 350 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL, 351 "FFF4: Data transfer underlength error"}, 352 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL, 353 "FFF4: Data transfer overlength error"}, 354 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL, 355 "3400: Logical unit failure"}, 356 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL, 357 "FFF4: Device microcode is corrupt"}, 358 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL, 359 "8150: PCI bus error"}, 360 {0x04430000, 1, 0, 361 "Unsupported device bus message received"}, 362 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL, 363 "FFF4: Disk device problem"}, 364 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL, 365 "8150: Permanent IOA failure"}, 366 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL, 367 "3010: Disk device returned wrong response to IOA"}, 368 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL, 369 "8151: IOA microcode error"}, 370 {0x04448500, 0, 0, 371 "Device bus status error"}, 372 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL, 373 "8157: IOA error requiring IOA reset to recover"}, 374 {0x04448700, 0, 0, 375 "ATA device status error"}, 376 {0x04490000, 0, 0, 377 "Message reject received from the device"}, 378 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL, 379 "8008: A permanent cache battery pack failure occurred"}, 380 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL, 381 "9090: Disk unit has been modified after the last known status"}, 382 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL, 383 "9081: IOA detected device error"}, 384 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL, 385 "9082: IOA detected device error"}, 386 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL, 387 "3110: Device bus error, message or command phase"}, 388 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL, 389 "3110: SAS Command / Task Management Function failed"}, 390 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL, 391 "9091: Incorrect hardware configuration change has been detected"}, 392 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL, 393 "9073: Invalid multi-adapter configuration"}, 394 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL, 395 "4010: Incorrect connection between cascaded expanders"}, 396 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL, 397 "4020: Connections exceed IOA design limits"}, 398 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL, 399 "4030: Incorrect multipath connection"}, 400 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL, 401 "4110: Unsupported enclosure function"}, 402 {0x04679800, 0, IPR_DEFAULT_LOG_LEVEL, 403 "4120: SAS cable VPD cannot be read"}, 404 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL, 405 "FFF4: Command to logical unit failed"}, 406 {0x05240000, 1, 0, 407 "Illegal request, invalid request type or request packet"}, 408 {0x05250000, 0, 0, 409 "Illegal request, invalid resource handle"}, 410 {0x05258000, 0, 0, 411 "Illegal request, commands not allowed to this device"}, 412 {0x05258100, 0, 0, 413 "Illegal request, command not allowed to a secondary adapter"}, 414 {0x05258200, 0, 0, 415 "Illegal request, command not allowed to a non-optimized resource"}, 416 {0x05260000, 0, 0, 417 "Illegal request, invalid field in parameter list"}, 418 {0x05260100, 0, 0, 419 "Illegal request, parameter not supported"}, 420 {0x05260200, 0, 0, 421 "Illegal request, parameter value invalid"}, 422 {0x052C0000, 0, 0, 423 "Illegal request, command sequence error"}, 424 {0x052C8000, 1, 0, 425 "Illegal request, dual adapter support not enabled"}, 426 {0x052C8100, 1, 0, 427 "Illegal request, another cable connector was physically disabled"}, 428 {0x054E8000, 1, 0, 429 "Illegal request, inconsistent group id/group count"}, 430 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL, 431 "9031: Array protection temporarily suspended, protection resuming"}, 432 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL, 433 "9040: Array protection temporarily suspended, protection resuming"}, 434 {0x060B0100, 0, IPR_DEFAULT_LOG_LEVEL, 435 "4080: IOA exceeded maximum operating temperature"}, 436 {0x060B8000, 0, IPR_DEFAULT_LOG_LEVEL, 437 "4085: Service required"}, 438 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL, 439 "3140: Device bus not ready to ready transition"}, 440 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL, 441 "FFFB: SCSI bus was reset"}, 442 {0x06290500, 0, 0, 443 "FFFE: SCSI bus transition to single ended"}, 444 {0x06290600, 0, 0, 445 "FFFE: SCSI bus transition to LVD"}, 446 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL, 447 "FFFB: SCSI bus was reset by another initiator"}, 448 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL, 449 "3029: A device replacement has occurred"}, 450 {0x063F8300, 0, IPR_DEFAULT_LOG_LEVEL, 451 "4102: Device bus fabric performance degradation"}, 452 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL, 453 "9051: IOA cache data exists for a missing or failed device"}, 454 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL, 455 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"}, 456 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL, 457 "9025: Disk unit is not supported at its physical location"}, 458 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL, 459 "3020: IOA detected a SCSI bus configuration error"}, 460 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL, 461 "3150: SCSI bus configuration error"}, 462 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL, 463 "9074: Asymmetric advanced function disk configuration"}, 464 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL, 465 "4040: Incomplete multipath connection between IOA and enclosure"}, 466 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL, 467 "4041: Incomplete multipath connection between enclosure and device"}, 468 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL, 469 "9075: Incomplete multipath connection between IOA and remote IOA"}, 470 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL, 471 "9076: Configuration error, missing remote IOA"}, 472 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL, 473 "4050: Enclosure does not support a required multipath function"}, 474 {0x06679800, 0, IPR_DEFAULT_LOG_LEVEL, 475 "4121: Configuration error, required cable is missing"}, 476 {0x06679900, 0, IPR_DEFAULT_LOG_LEVEL, 477 "4122: Cable is not plugged into the correct location on remote IOA"}, 478 {0x06679A00, 0, IPR_DEFAULT_LOG_LEVEL, 479 "4123: Configuration error, invalid cable vital product data"}, 480 {0x06679B00, 0, IPR_DEFAULT_LOG_LEVEL, 481 "4124: Configuration error, both cable ends are plugged into the same IOA"}, 482 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL, 483 "4070: Logically bad block written on device"}, 484 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL, 485 "9041: Array protection temporarily suspended"}, 486 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL, 487 "9042: Corrupt array parity detected on specified device"}, 488 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL, 489 "9030: Array no longer protected due to missing or failed disk unit"}, 490 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL, 491 "9071: Link operational transition"}, 492 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL, 493 "9072: Link not operational transition"}, 494 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL, 495 "9032: Array exposed but still protected"}, 496 {0x066B8300, 0, IPR_DEBUG_LOG_LEVEL, 497 "70DD: Device forced failed by disrupt device command"}, 498 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL, 499 "4061: Multipath redundancy level got better"}, 500 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL, 501 "4060: Multipath redundancy level got worse"}, 502 {0x06808100, 0, IPR_DEBUG_LOG_LEVEL, 503 "9083: Device raw mode enabled"}, 504 {0x06808200, 0, IPR_DEBUG_LOG_LEVEL, 505 "9084: Device raw mode disabled"}, 506 {0x07270000, 0, 0, 507 "Failure due to other device"}, 508 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL, 509 "9008: IOA does not support functions expected by devices"}, 510 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL, 511 "9010: Cache data associated with attached devices cannot be found"}, 512 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL, 513 "9011: Cache data belongs to devices other than those attached"}, 514 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL, 515 "9020: Array missing 2 or more devices with only 1 device present"}, 516 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL, 517 "9021: Array missing 2 or more devices with 2 or more devices present"}, 518 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL, 519 "9022: Exposed array is missing a required device"}, 520 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL, 521 "9023: Array member(s) not at required physical locations"}, 522 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL, 523 "9024: Array not functional due to present hardware configuration"}, 524 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL, 525 "9026: Array not functional due to present hardware configuration"}, 526 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL, 527 "9027: Array is missing a device and parity is out of sync"}, 528 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL, 529 "9028: Maximum number of arrays already exist"}, 530 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL, 531 "9050: Required cache data cannot be located for a disk unit"}, 532 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL, 533 "9052: Cache data exists for a device that has been modified"}, 534 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL, 535 "9054: IOA resources not available due to previous problems"}, 536 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL, 537 "9092: Disk unit requires initialization before use"}, 538 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL, 539 "9029: Incorrect hardware configuration change has been detected"}, 540 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL, 541 "9060: One or more disk pairs are missing from an array"}, 542 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL, 543 "9061: One or more disks are missing from an array"}, 544 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL, 545 "9062: One or more disks are missing from an array"}, 546 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL, 547 "9063: Maximum number of functional arrays has been exceeded"}, 548 {0x07279A00, 0, 0, 549 "Data protect, other volume set problem"}, 550 {0x0B260000, 0, 0, 551 "Aborted command, invalid descriptor"}, 552 {0x0B3F9000, 0, 0, 553 "Target operating conditions have changed, dual adapter takeover"}, 554 {0x0B530200, 0, 0, 555 "Aborted command, medium removal prevented"}, 556 {0x0B5A0000, 0, 0, 557 "Command terminated by host"}, 558 {0x0B5B8000, 0, 0, 559 "Aborted command, command terminated by host"} 560 }; 561 562 static const struct ipr_ses_table_entry ipr_ses_table[] = { 563 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, 564 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, 565 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ 566 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ 567 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ 568 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ 569 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, 570 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, 571 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 572 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 573 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, 574 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, 575 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } 576 }; 577 578 /* 579 * Function Prototypes 580 */ 581 static int ipr_reset_alert(struct ipr_cmnd *); 582 static void ipr_process_ccn(struct ipr_cmnd *); 583 static void ipr_process_error(struct ipr_cmnd *); 584 static void ipr_reset_ioa_job(struct ipr_cmnd *); 585 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, 586 enum ipr_shutdown_type); 587 588 #ifdef CONFIG_SCSI_IPR_TRACE 589 /** 590 * ipr_trc_hook - Add a trace entry to the driver trace 591 * @ipr_cmd: ipr command struct 592 * @type: trace type 593 * @add_data: additional data 594 * 595 * Return value: 596 * none 597 **/ 598 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, 599 u8 type, u32 add_data) 600 { 601 struct ipr_trace_entry *trace_entry; 602 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 603 unsigned int trace_index; 604 605 trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK; 606 trace_entry = &ioa_cfg->trace[trace_index]; 607 trace_entry->time = jiffies; 608 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; 609 trace_entry->type = type; 610 if (ipr_cmd->ioa_cfg->sis64) 611 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command; 612 else 613 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command; 614 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff; 615 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; 616 trace_entry->u.add_data = add_data; 617 wmb(); 618 } 619 #else 620 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0) 621 #endif 622 623 /** 624 * ipr_lock_and_done - Acquire lock and complete command 625 * @ipr_cmd: ipr command struct 626 * 627 * Return value: 628 * none 629 **/ 630 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd) 631 { 632 unsigned long lock_flags; 633 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 634 635 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 636 ipr_cmd->done(ipr_cmd); 637 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 638 } 639 640 /** 641 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse 642 * @ipr_cmd: ipr command struct 643 * 644 * Return value: 645 * none 646 **/ 647 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 648 { 649 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 650 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 651 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64; 652 dma_addr_t dma_addr = ipr_cmd->dma_addr; 653 int hrrq_id; 654 655 hrrq_id = ioarcb->cmd_pkt.hrrq_id; 656 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 657 ioarcb->cmd_pkt.hrrq_id = hrrq_id; 658 ioarcb->data_transfer_length = 0; 659 ioarcb->read_data_transfer_length = 0; 660 ioarcb->ioadl_len = 0; 661 ioarcb->read_ioadl_len = 0; 662 663 if (ipr_cmd->ioa_cfg->sis64) { 664 ioarcb->u.sis64_addr_data.data_ioadl_addr = 665 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 666 ioasa64->u.gata.status = 0; 667 } else { 668 ioarcb->write_ioadl_addr = 669 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 670 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 671 ioasa->u.gata.status = 0; 672 } 673 674 ioasa->hdr.ioasc = 0; 675 ioasa->hdr.residual_data_len = 0; 676 ipr_cmd->scsi_cmd = NULL; 677 ipr_cmd->qc = NULL; 678 ipr_cmd->sense_buffer[0] = 0; 679 ipr_cmd->dma_use_sg = 0; 680 } 681 682 /** 683 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block 684 * @ipr_cmd: ipr command struct 685 * 686 * Return value: 687 * none 688 **/ 689 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd, 690 void (*fast_done) (struct ipr_cmnd *)) 691 { 692 ipr_reinit_ipr_cmnd(ipr_cmd); 693 ipr_cmd->u.scratch = 0; 694 ipr_cmd->sibling = NULL; 695 ipr_cmd->eh_comp = NULL; 696 ipr_cmd->fast_done = fast_done; 697 init_timer(&ipr_cmd->timer); 698 } 699 700 /** 701 * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block 702 * @ioa_cfg: ioa config struct 703 * 704 * Return value: 705 * pointer to ipr command struct 706 **/ 707 static 708 struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue *hrrq) 709 { 710 struct ipr_cmnd *ipr_cmd = NULL; 711 712 if (likely(!list_empty(&hrrq->hrrq_free_q))) { 713 ipr_cmd = list_entry(hrrq->hrrq_free_q.next, 714 struct ipr_cmnd, queue); 715 list_del(&ipr_cmd->queue); 716 } 717 718 719 return ipr_cmd; 720 } 721 722 /** 723 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it 724 * @ioa_cfg: ioa config struct 725 * 726 * Return value: 727 * pointer to ipr command struct 728 **/ 729 static 730 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) 731 { 732 struct ipr_cmnd *ipr_cmd = 733 __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]); 734 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done); 735 return ipr_cmd; 736 } 737 738 /** 739 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts 740 * @ioa_cfg: ioa config struct 741 * @clr_ints: interrupts to clear 742 * 743 * This function masks all interrupts on the adapter, then clears the 744 * interrupts specified in the mask 745 * 746 * Return value: 747 * none 748 **/ 749 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, 750 u32 clr_ints) 751 { 752 volatile u32 int_reg; 753 int i; 754 755 /* Stop new interrupts */ 756 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 757 spin_lock(&ioa_cfg->hrrq[i]._lock); 758 ioa_cfg->hrrq[i].allow_interrupts = 0; 759 spin_unlock(&ioa_cfg->hrrq[i]._lock); 760 } 761 wmb(); 762 763 /* Set interrupt mask to stop all new interrupts */ 764 if (ioa_cfg->sis64) 765 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg); 766 else 767 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); 768 769 /* Clear any pending interrupts */ 770 if (ioa_cfg->sis64) 771 writel(~0, ioa_cfg->regs.clr_interrupt_reg); 772 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32); 773 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 774 } 775 776 /** 777 * ipr_save_pcix_cmd_reg - Save PCI-X command register 778 * @ioa_cfg: ioa config struct 779 * 780 * Return value: 781 * 0 on success / -EIO on failure 782 **/ 783 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 784 { 785 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 786 787 if (pcix_cmd_reg == 0) 788 return 0; 789 790 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 791 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 792 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 793 return -EIO; 794 } 795 796 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; 797 return 0; 798 } 799 800 /** 801 * ipr_set_pcix_cmd_reg - Setup PCI-X command register 802 * @ioa_cfg: ioa config struct 803 * 804 * Return value: 805 * 0 on success / -EIO on failure 806 **/ 807 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 808 { 809 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 810 811 if (pcix_cmd_reg) { 812 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 813 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 814 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); 815 return -EIO; 816 } 817 } 818 819 return 0; 820 } 821 822 /** 823 * __ipr_sata_eh_done - done function for aborted SATA commands 824 * @ipr_cmd: ipr command struct 825 * 826 * This function is invoked for ops generated to SATA 827 * devices which are being aborted. 828 * 829 * Return value: 830 * none 831 **/ 832 static void __ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd) 833 { 834 struct ata_queued_cmd *qc = ipr_cmd->qc; 835 struct ipr_sata_port *sata_port = qc->ap->private_data; 836 837 qc->err_mask |= AC_ERR_OTHER; 838 sata_port->ioasa.status |= ATA_BUSY; 839 ata_qc_complete(qc); 840 if (ipr_cmd->eh_comp) 841 complete(ipr_cmd->eh_comp); 842 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 843 } 844 845 /** 846 * ipr_sata_eh_done - done function for aborted SATA commands 847 * @ipr_cmd: ipr command struct 848 * 849 * This function is invoked for ops generated to SATA 850 * devices which are being aborted. 851 * 852 * Return value: 853 * none 854 **/ 855 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd) 856 { 857 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq; 858 unsigned long hrrq_flags; 859 860 spin_lock_irqsave(&hrrq->_lock, hrrq_flags); 861 __ipr_sata_eh_done(ipr_cmd); 862 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags); 863 } 864 865 /** 866 * __ipr_scsi_eh_done - mid-layer done function for aborted ops 867 * @ipr_cmd: ipr command struct 868 * 869 * This function is invoked by the interrupt handler for 870 * ops generated by the SCSI mid-layer which are being aborted. 871 * 872 * Return value: 873 * none 874 **/ 875 static void __ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 876 { 877 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 878 879 scsi_cmd->result |= (DID_ERROR << 16); 880 881 scsi_dma_unmap(ipr_cmd->scsi_cmd); 882 scsi_cmd->scsi_done(scsi_cmd); 883 if (ipr_cmd->eh_comp) 884 complete(ipr_cmd->eh_comp); 885 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 886 } 887 888 /** 889 * ipr_scsi_eh_done - mid-layer done function for aborted ops 890 * @ipr_cmd: ipr command struct 891 * 892 * This function is invoked by the interrupt handler for 893 * ops generated by the SCSI mid-layer which are being aborted. 894 * 895 * Return value: 896 * none 897 **/ 898 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 899 { 900 unsigned long hrrq_flags; 901 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq; 902 903 spin_lock_irqsave(&hrrq->_lock, hrrq_flags); 904 __ipr_scsi_eh_done(ipr_cmd); 905 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags); 906 } 907 908 /** 909 * ipr_fail_all_ops - Fails all outstanding ops. 910 * @ioa_cfg: ioa config struct 911 * 912 * This function fails all outstanding ops. 913 * 914 * Return value: 915 * none 916 **/ 917 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) 918 { 919 struct ipr_cmnd *ipr_cmd, *temp; 920 struct ipr_hrr_queue *hrrq; 921 922 ENTER; 923 for_each_hrrq(hrrq, ioa_cfg) { 924 spin_lock(&hrrq->_lock); 925 list_for_each_entry_safe(ipr_cmd, 926 temp, &hrrq->hrrq_pending_q, queue) { 927 list_del(&ipr_cmd->queue); 928 929 ipr_cmd->s.ioasa.hdr.ioasc = 930 cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); 931 ipr_cmd->s.ioasa.hdr.ilid = 932 cpu_to_be32(IPR_DRIVER_ILID); 933 934 if (ipr_cmd->scsi_cmd) 935 ipr_cmd->done = __ipr_scsi_eh_done; 936 else if (ipr_cmd->qc) 937 ipr_cmd->done = __ipr_sata_eh_done; 938 939 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, 940 IPR_IOASC_IOA_WAS_RESET); 941 del_timer(&ipr_cmd->timer); 942 ipr_cmd->done(ipr_cmd); 943 } 944 spin_unlock(&hrrq->_lock); 945 } 946 LEAVE; 947 } 948 949 /** 950 * ipr_send_command - Send driver initiated requests. 951 * @ipr_cmd: ipr command struct 952 * 953 * This function sends a command to the adapter using the correct write call. 954 * In the case of sis64, calculate the ioarcb size required. Then or in the 955 * appropriate bits. 956 * 957 * Return value: 958 * none 959 **/ 960 static void ipr_send_command(struct ipr_cmnd *ipr_cmd) 961 { 962 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 963 dma_addr_t send_dma_addr = ipr_cmd->dma_addr; 964 965 if (ioa_cfg->sis64) { 966 /* The default size is 256 bytes */ 967 send_dma_addr |= 0x1; 968 969 /* If the number of ioadls * size of ioadl > 128 bytes, 970 then use a 512 byte ioarcb */ 971 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 ) 972 send_dma_addr |= 0x4; 973 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg); 974 } else 975 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg); 976 } 977 978 /** 979 * ipr_do_req - Send driver initiated requests. 980 * @ipr_cmd: ipr command struct 981 * @done: done function 982 * @timeout_func: timeout function 983 * @timeout: timeout value 984 * 985 * This function sends the specified command to the adapter with the 986 * timeout given. The done function is invoked on command completion. 987 * 988 * Return value: 989 * none 990 **/ 991 static void ipr_do_req(struct ipr_cmnd *ipr_cmd, 992 void (*done) (struct ipr_cmnd *), 993 void (*timeout_func) (struct ipr_cmnd *), u32 timeout) 994 { 995 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 996 997 ipr_cmd->done = done; 998 999 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 1000 ipr_cmd->timer.expires = jiffies + timeout; 1001 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func; 1002 1003 add_timer(&ipr_cmd->timer); 1004 1005 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); 1006 1007 ipr_send_command(ipr_cmd); 1008 } 1009 1010 /** 1011 * ipr_internal_cmd_done - Op done function for an internally generated op. 1012 * @ipr_cmd: ipr command struct 1013 * 1014 * This function is the op done function for an internally generated, 1015 * blocking op. It simply wakes the sleeping thread. 1016 * 1017 * Return value: 1018 * none 1019 **/ 1020 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) 1021 { 1022 if (ipr_cmd->sibling) 1023 ipr_cmd->sibling = NULL; 1024 else 1025 complete(&ipr_cmd->completion); 1026 } 1027 1028 /** 1029 * ipr_init_ioadl - initialize the ioadl for the correct SIS type 1030 * @ipr_cmd: ipr command struct 1031 * @dma_addr: dma address 1032 * @len: transfer length 1033 * @flags: ioadl flag value 1034 * 1035 * This function initializes an ioadl in the case where there is only a single 1036 * descriptor. 1037 * 1038 * Return value: 1039 * nothing 1040 **/ 1041 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr, 1042 u32 len, int flags) 1043 { 1044 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 1045 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 1046 1047 ipr_cmd->dma_use_sg = 1; 1048 1049 if (ipr_cmd->ioa_cfg->sis64) { 1050 ioadl64->flags = cpu_to_be32(flags); 1051 ioadl64->data_len = cpu_to_be32(len); 1052 ioadl64->address = cpu_to_be64(dma_addr); 1053 1054 ipr_cmd->ioarcb.ioadl_len = 1055 cpu_to_be32(sizeof(struct ipr_ioadl64_desc)); 1056 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len); 1057 } else { 1058 ioadl->flags_and_data_len = cpu_to_be32(flags | len); 1059 ioadl->address = cpu_to_be32(dma_addr); 1060 1061 if (flags == IPR_IOADL_FLAGS_READ_LAST) { 1062 ipr_cmd->ioarcb.read_ioadl_len = 1063 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 1064 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len); 1065 } else { 1066 ipr_cmd->ioarcb.ioadl_len = 1067 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 1068 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len); 1069 } 1070 } 1071 } 1072 1073 /** 1074 * ipr_send_blocking_cmd - Send command and sleep on its completion. 1075 * @ipr_cmd: ipr command struct 1076 * @timeout_func: function to invoke if command times out 1077 * @timeout: timeout 1078 * 1079 * Return value: 1080 * none 1081 **/ 1082 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, 1083 void (*timeout_func) (struct ipr_cmnd *ipr_cmd), 1084 u32 timeout) 1085 { 1086 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1087 1088 init_completion(&ipr_cmd->completion); 1089 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); 1090 1091 spin_unlock_irq(ioa_cfg->host->host_lock); 1092 wait_for_completion(&ipr_cmd->completion); 1093 spin_lock_irq(ioa_cfg->host->host_lock); 1094 } 1095 1096 static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg) 1097 { 1098 unsigned int hrrq; 1099 1100 if (ioa_cfg->hrrq_num == 1) 1101 hrrq = 0; 1102 else { 1103 hrrq = atomic_add_return(1, &ioa_cfg->hrrq_index); 1104 hrrq = (hrrq % (ioa_cfg->hrrq_num - 1)) + 1; 1105 } 1106 return hrrq; 1107 } 1108 1109 /** 1110 * ipr_send_hcam - Send an HCAM to the adapter. 1111 * @ioa_cfg: ioa config struct 1112 * @type: HCAM type 1113 * @hostrcb: hostrcb struct 1114 * 1115 * This function will send a Host Controlled Async command to the adapter. 1116 * If HCAMs are currently not allowed to be issued to the adapter, it will 1117 * place the hostrcb on the free queue. 1118 * 1119 * Return value: 1120 * none 1121 **/ 1122 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, 1123 struct ipr_hostrcb *hostrcb) 1124 { 1125 struct ipr_cmnd *ipr_cmd; 1126 struct ipr_ioarcb *ioarcb; 1127 1128 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) { 1129 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 1130 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 1131 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); 1132 1133 ipr_cmd->u.hostrcb = hostrcb; 1134 ioarcb = &ipr_cmd->ioarcb; 1135 1136 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 1137 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; 1138 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; 1139 ioarcb->cmd_pkt.cdb[1] = type; 1140 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; 1141 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; 1142 1143 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma, 1144 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST); 1145 1146 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) 1147 ipr_cmd->done = ipr_process_ccn; 1148 else 1149 ipr_cmd->done = ipr_process_error; 1150 1151 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); 1152 1153 ipr_send_command(ipr_cmd); 1154 } else { 1155 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 1156 } 1157 } 1158 1159 /** 1160 * ipr_update_ata_class - Update the ata class in the resource entry 1161 * @res: resource entry struct 1162 * @proto: cfgte device bus protocol value 1163 * 1164 * Return value: 1165 * none 1166 **/ 1167 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto) 1168 { 1169 switch (proto) { 1170 case IPR_PROTO_SATA: 1171 case IPR_PROTO_SAS_STP: 1172 res->ata_class = ATA_DEV_ATA; 1173 break; 1174 case IPR_PROTO_SATA_ATAPI: 1175 case IPR_PROTO_SAS_STP_ATAPI: 1176 res->ata_class = ATA_DEV_ATAPI; 1177 break; 1178 default: 1179 res->ata_class = ATA_DEV_UNKNOWN; 1180 break; 1181 }; 1182 } 1183 1184 /** 1185 * ipr_init_res_entry - Initialize a resource entry struct. 1186 * @res: resource entry struct 1187 * @cfgtew: config table entry wrapper struct 1188 * 1189 * Return value: 1190 * none 1191 **/ 1192 static void ipr_init_res_entry(struct ipr_resource_entry *res, 1193 struct ipr_config_table_entry_wrapper *cfgtew) 1194 { 1195 int found = 0; 1196 unsigned int proto; 1197 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg; 1198 struct ipr_resource_entry *gscsi_res = NULL; 1199 1200 res->needs_sync_complete = 0; 1201 res->in_erp = 0; 1202 res->add_to_ml = 0; 1203 res->del_from_ml = 0; 1204 res->resetting_device = 0; 1205 res->reset_occurred = 0; 1206 res->sdev = NULL; 1207 res->sata_port = NULL; 1208 1209 if (ioa_cfg->sis64) { 1210 proto = cfgtew->u.cfgte64->proto; 1211 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags); 1212 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags); 1213 res->qmodel = IPR_QUEUEING_MODEL64(res); 1214 res->type = cfgtew->u.cfgte64->res_type; 1215 1216 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path, 1217 sizeof(res->res_path)); 1218 1219 res->bus = 0; 1220 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1221 sizeof(res->dev_lun.scsi_lun)); 1222 res->lun = scsilun_to_int(&res->dev_lun); 1223 1224 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) { 1225 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) { 1226 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) { 1227 found = 1; 1228 res->target = gscsi_res->target; 1229 break; 1230 } 1231 } 1232 if (!found) { 1233 res->target = find_first_zero_bit(ioa_cfg->target_ids, 1234 ioa_cfg->max_devs_supported); 1235 set_bit(res->target, ioa_cfg->target_ids); 1236 } 1237 } else if (res->type == IPR_RES_TYPE_IOAFP) { 1238 res->bus = IPR_IOAFP_VIRTUAL_BUS; 1239 res->target = 0; 1240 } else if (res->type == IPR_RES_TYPE_ARRAY) { 1241 res->bus = IPR_ARRAY_VIRTUAL_BUS; 1242 res->target = find_first_zero_bit(ioa_cfg->array_ids, 1243 ioa_cfg->max_devs_supported); 1244 set_bit(res->target, ioa_cfg->array_ids); 1245 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) { 1246 res->bus = IPR_VSET_VIRTUAL_BUS; 1247 res->target = find_first_zero_bit(ioa_cfg->vset_ids, 1248 ioa_cfg->max_devs_supported); 1249 set_bit(res->target, ioa_cfg->vset_ids); 1250 } else { 1251 res->target = find_first_zero_bit(ioa_cfg->target_ids, 1252 ioa_cfg->max_devs_supported); 1253 set_bit(res->target, ioa_cfg->target_ids); 1254 } 1255 } else { 1256 proto = cfgtew->u.cfgte->proto; 1257 res->qmodel = IPR_QUEUEING_MODEL(res); 1258 res->flags = cfgtew->u.cfgte->flags; 1259 if (res->flags & IPR_IS_IOA_RESOURCE) 1260 res->type = IPR_RES_TYPE_IOAFP; 1261 else 1262 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f; 1263 1264 res->bus = cfgtew->u.cfgte->res_addr.bus; 1265 res->target = cfgtew->u.cfgte->res_addr.target; 1266 res->lun = cfgtew->u.cfgte->res_addr.lun; 1267 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn); 1268 } 1269 1270 ipr_update_ata_class(res, proto); 1271 } 1272 1273 /** 1274 * ipr_is_same_device - Determine if two devices are the same. 1275 * @res: resource entry struct 1276 * @cfgtew: config table entry wrapper struct 1277 * 1278 * Return value: 1279 * 1 if the devices are the same / 0 otherwise 1280 **/ 1281 static int ipr_is_same_device(struct ipr_resource_entry *res, 1282 struct ipr_config_table_entry_wrapper *cfgtew) 1283 { 1284 if (res->ioa_cfg->sis64) { 1285 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id, 1286 sizeof(cfgtew->u.cfgte64->dev_id)) && 1287 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1288 sizeof(cfgtew->u.cfgte64->lun))) { 1289 return 1; 1290 } 1291 } else { 1292 if (res->bus == cfgtew->u.cfgte->res_addr.bus && 1293 res->target == cfgtew->u.cfgte->res_addr.target && 1294 res->lun == cfgtew->u.cfgte->res_addr.lun) 1295 return 1; 1296 } 1297 1298 return 0; 1299 } 1300 1301 /** 1302 * __ipr_format_res_path - Format the resource path for printing. 1303 * @res_path: resource path 1304 * @buf: buffer 1305 * @len: length of buffer provided 1306 * 1307 * Return value: 1308 * pointer to buffer 1309 **/ 1310 static char *__ipr_format_res_path(u8 *res_path, char *buffer, int len) 1311 { 1312 int i; 1313 char *p = buffer; 1314 1315 *p = '\0'; 1316 p += snprintf(p, buffer + len - p, "%02X", res_path[0]); 1317 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++) 1318 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]); 1319 1320 return buffer; 1321 } 1322 1323 /** 1324 * ipr_format_res_path - Format the resource path for printing. 1325 * @ioa_cfg: ioa config struct 1326 * @res_path: resource path 1327 * @buf: buffer 1328 * @len: length of buffer provided 1329 * 1330 * Return value: 1331 * pointer to buffer 1332 **/ 1333 static char *ipr_format_res_path(struct ipr_ioa_cfg *ioa_cfg, 1334 u8 *res_path, char *buffer, int len) 1335 { 1336 char *p = buffer; 1337 1338 *p = '\0'; 1339 p += snprintf(p, buffer + len - p, "%d/", ioa_cfg->host->host_no); 1340 __ipr_format_res_path(res_path, p, len - (buffer - p)); 1341 return buffer; 1342 } 1343 1344 /** 1345 * ipr_update_res_entry - Update the resource entry. 1346 * @res: resource entry struct 1347 * @cfgtew: config table entry wrapper struct 1348 * 1349 * Return value: 1350 * none 1351 **/ 1352 static void ipr_update_res_entry(struct ipr_resource_entry *res, 1353 struct ipr_config_table_entry_wrapper *cfgtew) 1354 { 1355 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1356 unsigned int proto; 1357 int new_path = 0; 1358 1359 if (res->ioa_cfg->sis64) { 1360 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags); 1361 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags); 1362 res->type = cfgtew->u.cfgte64->res_type; 1363 1364 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data, 1365 sizeof(struct ipr_std_inq_data)); 1366 1367 res->qmodel = IPR_QUEUEING_MODEL64(res); 1368 proto = cfgtew->u.cfgte64->proto; 1369 res->res_handle = cfgtew->u.cfgte64->res_handle; 1370 res->dev_id = cfgtew->u.cfgte64->dev_id; 1371 1372 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1373 sizeof(res->dev_lun.scsi_lun)); 1374 1375 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path, 1376 sizeof(res->res_path))) { 1377 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path, 1378 sizeof(res->res_path)); 1379 new_path = 1; 1380 } 1381 1382 if (res->sdev && new_path) 1383 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n", 1384 ipr_format_res_path(res->ioa_cfg, 1385 res->res_path, buffer, sizeof(buffer))); 1386 } else { 1387 res->flags = cfgtew->u.cfgte->flags; 1388 if (res->flags & IPR_IS_IOA_RESOURCE) 1389 res->type = IPR_RES_TYPE_IOAFP; 1390 else 1391 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f; 1392 1393 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data, 1394 sizeof(struct ipr_std_inq_data)); 1395 1396 res->qmodel = IPR_QUEUEING_MODEL(res); 1397 proto = cfgtew->u.cfgte->proto; 1398 res->res_handle = cfgtew->u.cfgte->res_handle; 1399 } 1400 1401 ipr_update_ata_class(res, proto); 1402 } 1403 1404 /** 1405 * ipr_clear_res_target - Clear the bit in the bit map representing the target 1406 * for the resource. 1407 * @res: resource entry struct 1408 * @cfgtew: config table entry wrapper struct 1409 * 1410 * Return value: 1411 * none 1412 **/ 1413 static void ipr_clear_res_target(struct ipr_resource_entry *res) 1414 { 1415 struct ipr_resource_entry *gscsi_res = NULL; 1416 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg; 1417 1418 if (!ioa_cfg->sis64) 1419 return; 1420 1421 if (res->bus == IPR_ARRAY_VIRTUAL_BUS) 1422 clear_bit(res->target, ioa_cfg->array_ids); 1423 else if (res->bus == IPR_VSET_VIRTUAL_BUS) 1424 clear_bit(res->target, ioa_cfg->vset_ids); 1425 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) { 1426 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) 1427 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res) 1428 return; 1429 clear_bit(res->target, ioa_cfg->target_ids); 1430 1431 } else if (res->bus == 0) 1432 clear_bit(res->target, ioa_cfg->target_ids); 1433 } 1434 1435 /** 1436 * ipr_handle_config_change - Handle a config change from the adapter 1437 * @ioa_cfg: ioa config struct 1438 * @hostrcb: hostrcb 1439 * 1440 * Return value: 1441 * none 1442 **/ 1443 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, 1444 struct ipr_hostrcb *hostrcb) 1445 { 1446 struct ipr_resource_entry *res = NULL; 1447 struct ipr_config_table_entry_wrapper cfgtew; 1448 __be32 cc_res_handle; 1449 1450 u32 is_ndn = 1; 1451 1452 if (ioa_cfg->sis64) { 1453 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64; 1454 cc_res_handle = cfgtew.u.cfgte64->res_handle; 1455 } else { 1456 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte; 1457 cc_res_handle = cfgtew.u.cfgte->res_handle; 1458 } 1459 1460 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1461 if (res->res_handle == cc_res_handle) { 1462 is_ndn = 0; 1463 break; 1464 } 1465 } 1466 1467 if (is_ndn) { 1468 if (list_empty(&ioa_cfg->free_res_q)) { 1469 ipr_send_hcam(ioa_cfg, 1470 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 1471 hostrcb); 1472 return; 1473 } 1474 1475 res = list_entry(ioa_cfg->free_res_q.next, 1476 struct ipr_resource_entry, queue); 1477 1478 list_del(&res->queue); 1479 ipr_init_res_entry(res, &cfgtew); 1480 list_add_tail(&res->queue, &ioa_cfg->used_res_q); 1481 } 1482 1483 ipr_update_res_entry(res, &cfgtew); 1484 1485 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { 1486 if (res->sdev) { 1487 res->del_from_ml = 1; 1488 res->res_handle = IPR_INVALID_RES_HANDLE; 1489 schedule_work(&ioa_cfg->work_q); 1490 } else { 1491 ipr_clear_res_target(res); 1492 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 1493 } 1494 } else if (!res->sdev || res->del_from_ml) { 1495 res->add_to_ml = 1; 1496 schedule_work(&ioa_cfg->work_q); 1497 } 1498 1499 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 1500 } 1501 1502 /** 1503 * ipr_process_ccn - Op done function for a CCN. 1504 * @ipr_cmd: ipr command struct 1505 * 1506 * This function is the op done function for a configuration 1507 * change notification host controlled async from the adapter. 1508 * 1509 * Return value: 1510 * none 1511 **/ 1512 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) 1513 { 1514 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1515 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 1516 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 1517 1518 list_del_init(&hostrcb->queue); 1519 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 1520 1521 if (ioasc) { 1522 if (ioasc != IPR_IOASC_IOA_WAS_RESET && 1523 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) 1524 dev_err(&ioa_cfg->pdev->dev, 1525 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 1526 1527 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 1528 } else { 1529 ipr_handle_config_change(ioa_cfg, hostrcb); 1530 } 1531 } 1532 1533 /** 1534 * strip_and_pad_whitespace - Strip and pad trailing whitespace. 1535 * @i: index into buffer 1536 * @buf: string to modify 1537 * 1538 * This function will strip all trailing whitespace, pad the end 1539 * of the string with a single space, and NULL terminate the string. 1540 * 1541 * Return value: 1542 * new length of string 1543 **/ 1544 static int strip_and_pad_whitespace(int i, char *buf) 1545 { 1546 while (i && buf[i] == ' ') 1547 i--; 1548 buf[i+1] = ' '; 1549 buf[i+2] = '\0'; 1550 return i + 2; 1551 } 1552 1553 /** 1554 * ipr_log_vpd_compact - Log the passed extended VPD compactly. 1555 * @prefix: string to print at start of printk 1556 * @hostrcb: hostrcb pointer 1557 * @vpd: vendor/product id/sn struct 1558 * 1559 * Return value: 1560 * none 1561 **/ 1562 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 1563 struct ipr_vpd *vpd) 1564 { 1565 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3]; 1566 int i = 0; 1567 1568 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 1569 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer); 1570 1571 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN); 1572 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer); 1573 1574 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN); 1575 buffer[IPR_SERIAL_NUM_LEN + i] = '\0'; 1576 1577 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer); 1578 } 1579 1580 /** 1581 * ipr_log_vpd - Log the passed VPD to the error log. 1582 * @vpd: vendor/product id/sn struct 1583 * 1584 * Return value: 1585 * none 1586 **/ 1587 static void ipr_log_vpd(struct ipr_vpd *vpd) 1588 { 1589 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN 1590 + IPR_SERIAL_NUM_LEN]; 1591 1592 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 1593 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id, 1594 IPR_PROD_ID_LEN); 1595 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; 1596 ipr_err("Vendor/Product ID: %s\n", buffer); 1597 1598 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN); 1599 buffer[IPR_SERIAL_NUM_LEN] = '\0'; 1600 ipr_err(" Serial Number: %s\n", buffer); 1601 } 1602 1603 /** 1604 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly. 1605 * @prefix: string to print at start of printk 1606 * @hostrcb: hostrcb pointer 1607 * @vpd: vendor/product id/sn/wwn struct 1608 * 1609 * Return value: 1610 * none 1611 **/ 1612 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 1613 struct ipr_ext_vpd *vpd) 1614 { 1615 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd); 1616 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix, 1617 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1])); 1618 } 1619 1620 /** 1621 * ipr_log_ext_vpd - Log the passed extended VPD to the error log. 1622 * @vpd: vendor/product id/sn/wwn struct 1623 * 1624 * Return value: 1625 * none 1626 **/ 1627 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd) 1628 { 1629 ipr_log_vpd(&vpd->vpd); 1630 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]), 1631 be32_to_cpu(vpd->wwid[1])); 1632 } 1633 1634 /** 1635 * ipr_log_enhanced_cache_error - Log a cache error. 1636 * @ioa_cfg: ioa config struct 1637 * @hostrcb: hostrcb struct 1638 * 1639 * Return value: 1640 * none 1641 **/ 1642 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1643 struct ipr_hostrcb *hostrcb) 1644 { 1645 struct ipr_hostrcb_type_12_error *error; 1646 1647 if (ioa_cfg->sis64) 1648 error = &hostrcb->hcam.u.error64.u.type_12_error; 1649 else 1650 error = &hostrcb->hcam.u.error.u.type_12_error; 1651 1652 ipr_err("-----Current Configuration-----\n"); 1653 ipr_err("Cache Directory Card Information:\n"); 1654 ipr_log_ext_vpd(&error->ioa_vpd); 1655 ipr_err("Adapter Card Information:\n"); 1656 ipr_log_ext_vpd(&error->cfc_vpd); 1657 1658 ipr_err("-----Expected Configuration-----\n"); 1659 ipr_err("Cache Directory Card Information:\n"); 1660 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd); 1661 ipr_err("Adapter Card Information:\n"); 1662 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd); 1663 1664 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1665 be32_to_cpu(error->ioa_data[0]), 1666 be32_to_cpu(error->ioa_data[1]), 1667 be32_to_cpu(error->ioa_data[2])); 1668 } 1669 1670 /** 1671 * ipr_log_cache_error - Log a cache error. 1672 * @ioa_cfg: ioa config struct 1673 * @hostrcb: hostrcb struct 1674 * 1675 * Return value: 1676 * none 1677 **/ 1678 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1679 struct ipr_hostrcb *hostrcb) 1680 { 1681 struct ipr_hostrcb_type_02_error *error = 1682 &hostrcb->hcam.u.error.u.type_02_error; 1683 1684 ipr_err("-----Current Configuration-----\n"); 1685 ipr_err("Cache Directory Card Information:\n"); 1686 ipr_log_vpd(&error->ioa_vpd); 1687 ipr_err("Adapter Card Information:\n"); 1688 ipr_log_vpd(&error->cfc_vpd); 1689 1690 ipr_err("-----Expected Configuration-----\n"); 1691 ipr_err("Cache Directory Card Information:\n"); 1692 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd); 1693 ipr_err("Adapter Card Information:\n"); 1694 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd); 1695 1696 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1697 be32_to_cpu(error->ioa_data[0]), 1698 be32_to_cpu(error->ioa_data[1]), 1699 be32_to_cpu(error->ioa_data[2])); 1700 } 1701 1702 /** 1703 * ipr_log_enhanced_config_error - Log a configuration error. 1704 * @ioa_cfg: ioa config struct 1705 * @hostrcb: hostrcb struct 1706 * 1707 * Return value: 1708 * none 1709 **/ 1710 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg, 1711 struct ipr_hostrcb *hostrcb) 1712 { 1713 int errors_logged, i; 1714 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry; 1715 struct ipr_hostrcb_type_13_error *error; 1716 1717 error = &hostrcb->hcam.u.error.u.type_13_error; 1718 errors_logged = be32_to_cpu(error->errors_logged); 1719 1720 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1721 be32_to_cpu(error->errors_detected), errors_logged); 1722 1723 dev_entry = error->dev; 1724 1725 for (i = 0; i < errors_logged; i++, dev_entry++) { 1726 ipr_err_separator; 1727 1728 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1729 ipr_log_ext_vpd(&dev_entry->vpd); 1730 1731 ipr_err("-----New Device Information-----\n"); 1732 ipr_log_ext_vpd(&dev_entry->new_vpd); 1733 1734 ipr_err("Cache Directory Card Information:\n"); 1735 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1736 1737 ipr_err("Adapter Card Information:\n"); 1738 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1739 } 1740 } 1741 1742 /** 1743 * ipr_log_sis64_config_error - Log a device error. 1744 * @ioa_cfg: ioa config struct 1745 * @hostrcb: hostrcb struct 1746 * 1747 * Return value: 1748 * none 1749 **/ 1750 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg, 1751 struct ipr_hostrcb *hostrcb) 1752 { 1753 int errors_logged, i; 1754 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry; 1755 struct ipr_hostrcb_type_23_error *error; 1756 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1757 1758 error = &hostrcb->hcam.u.error64.u.type_23_error; 1759 errors_logged = be32_to_cpu(error->errors_logged); 1760 1761 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1762 be32_to_cpu(error->errors_detected), errors_logged); 1763 1764 dev_entry = error->dev; 1765 1766 for (i = 0; i < errors_logged; i++, dev_entry++) { 1767 ipr_err_separator; 1768 1769 ipr_err("Device %d : %s", i + 1, 1770 __ipr_format_res_path(dev_entry->res_path, 1771 buffer, sizeof(buffer))); 1772 ipr_log_ext_vpd(&dev_entry->vpd); 1773 1774 ipr_err("-----New Device Information-----\n"); 1775 ipr_log_ext_vpd(&dev_entry->new_vpd); 1776 1777 ipr_err("Cache Directory Card Information:\n"); 1778 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1779 1780 ipr_err("Adapter Card Information:\n"); 1781 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1782 } 1783 } 1784 1785 /** 1786 * ipr_log_config_error - Log a configuration error. 1787 * @ioa_cfg: ioa config struct 1788 * @hostrcb: hostrcb struct 1789 * 1790 * Return value: 1791 * none 1792 **/ 1793 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, 1794 struct ipr_hostrcb *hostrcb) 1795 { 1796 int errors_logged, i; 1797 struct ipr_hostrcb_device_data_entry *dev_entry; 1798 struct ipr_hostrcb_type_03_error *error; 1799 1800 error = &hostrcb->hcam.u.error.u.type_03_error; 1801 errors_logged = be32_to_cpu(error->errors_logged); 1802 1803 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1804 be32_to_cpu(error->errors_detected), errors_logged); 1805 1806 dev_entry = error->dev; 1807 1808 for (i = 0; i < errors_logged; i++, dev_entry++) { 1809 ipr_err_separator; 1810 1811 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1812 ipr_log_vpd(&dev_entry->vpd); 1813 1814 ipr_err("-----New Device Information-----\n"); 1815 ipr_log_vpd(&dev_entry->new_vpd); 1816 1817 ipr_err("Cache Directory Card Information:\n"); 1818 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd); 1819 1820 ipr_err("Adapter Card Information:\n"); 1821 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd); 1822 1823 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", 1824 be32_to_cpu(dev_entry->ioa_data[0]), 1825 be32_to_cpu(dev_entry->ioa_data[1]), 1826 be32_to_cpu(dev_entry->ioa_data[2]), 1827 be32_to_cpu(dev_entry->ioa_data[3]), 1828 be32_to_cpu(dev_entry->ioa_data[4])); 1829 } 1830 } 1831 1832 /** 1833 * ipr_log_enhanced_array_error - Log an array configuration error. 1834 * @ioa_cfg: ioa config struct 1835 * @hostrcb: hostrcb struct 1836 * 1837 * Return value: 1838 * none 1839 **/ 1840 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg, 1841 struct ipr_hostrcb *hostrcb) 1842 { 1843 int i, num_entries; 1844 struct ipr_hostrcb_type_14_error *error; 1845 struct ipr_hostrcb_array_data_entry_enhanced *array_entry; 1846 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1847 1848 error = &hostrcb->hcam.u.error.u.type_14_error; 1849 1850 ipr_err_separator; 1851 1852 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1853 error->protection_level, 1854 ioa_cfg->host->host_no, 1855 error->last_func_vset_res_addr.bus, 1856 error->last_func_vset_res_addr.target, 1857 error->last_func_vset_res_addr.lun); 1858 1859 ipr_err_separator; 1860 1861 array_entry = error->array_member; 1862 num_entries = min_t(u32, be32_to_cpu(error->num_entries), 1863 ARRAY_SIZE(error->array_member)); 1864 1865 for (i = 0; i < num_entries; i++, array_entry++) { 1866 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1867 continue; 1868 1869 if (be32_to_cpu(error->exposed_mode_adn) == i) 1870 ipr_err("Exposed Array Member %d:\n", i); 1871 else 1872 ipr_err("Array Member %d:\n", i); 1873 1874 ipr_log_ext_vpd(&array_entry->vpd); 1875 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1876 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1877 "Expected Location"); 1878 1879 ipr_err_separator; 1880 } 1881 } 1882 1883 /** 1884 * ipr_log_array_error - Log an array configuration error. 1885 * @ioa_cfg: ioa config struct 1886 * @hostrcb: hostrcb struct 1887 * 1888 * Return value: 1889 * none 1890 **/ 1891 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, 1892 struct ipr_hostrcb *hostrcb) 1893 { 1894 int i; 1895 struct ipr_hostrcb_type_04_error *error; 1896 struct ipr_hostrcb_array_data_entry *array_entry; 1897 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1898 1899 error = &hostrcb->hcam.u.error.u.type_04_error; 1900 1901 ipr_err_separator; 1902 1903 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1904 error->protection_level, 1905 ioa_cfg->host->host_no, 1906 error->last_func_vset_res_addr.bus, 1907 error->last_func_vset_res_addr.target, 1908 error->last_func_vset_res_addr.lun); 1909 1910 ipr_err_separator; 1911 1912 array_entry = error->array_member; 1913 1914 for (i = 0; i < 18; i++) { 1915 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1916 continue; 1917 1918 if (be32_to_cpu(error->exposed_mode_adn) == i) 1919 ipr_err("Exposed Array Member %d:\n", i); 1920 else 1921 ipr_err("Array Member %d:\n", i); 1922 1923 ipr_log_vpd(&array_entry->vpd); 1924 1925 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1926 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1927 "Expected Location"); 1928 1929 ipr_err_separator; 1930 1931 if (i == 9) 1932 array_entry = error->array_member2; 1933 else 1934 array_entry++; 1935 } 1936 } 1937 1938 /** 1939 * ipr_log_hex_data - Log additional hex IOA error data. 1940 * @ioa_cfg: ioa config struct 1941 * @data: IOA error data 1942 * @len: data length 1943 * 1944 * Return value: 1945 * none 1946 **/ 1947 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, __be32 *data, int len) 1948 { 1949 int i; 1950 1951 if (len == 0) 1952 return; 1953 1954 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 1955 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP); 1956 1957 for (i = 0; i < len / 4; i += 4) { 1958 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 1959 be32_to_cpu(data[i]), 1960 be32_to_cpu(data[i+1]), 1961 be32_to_cpu(data[i+2]), 1962 be32_to_cpu(data[i+3])); 1963 } 1964 } 1965 1966 /** 1967 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error. 1968 * @ioa_cfg: ioa config struct 1969 * @hostrcb: hostrcb struct 1970 * 1971 * Return value: 1972 * none 1973 **/ 1974 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1975 struct ipr_hostrcb *hostrcb) 1976 { 1977 struct ipr_hostrcb_type_17_error *error; 1978 1979 if (ioa_cfg->sis64) 1980 error = &hostrcb->hcam.u.error64.u.type_17_error; 1981 else 1982 error = &hostrcb->hcam.u.error.u.type_17_error; 1983 1984 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1985 strim(error->failure_reason); 1986 1987 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 1988 be32_to_cpu(hostrcb->hcam.u.error.prc)); 1989 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd); 1990 ipr_log_hex_data(ioa_cfg, error->data, 1991 be32_to_cpu(hostrcb->hcam.length) - 1992 (offsetof(struct ipr_hostrcb_error, u) + 1993 offsetof(struct ipr_hostrcb_type_17_error, data))); 1994 } 1995 1996 /** 1997 * ipr_log_dual_ioa_error - Log a dual adapter error. 1998 * @ioa_cfg: ioa config struct 1999 * @hostrcb: hostrcb struct 2000 * 2001 * Return value: 2002 * none 2003 **/ 2004 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 2005 struct ipr_hostrcb *hostrcb) 2006 { 2007 struct ipr_hostrcb_type_07_error *error; 2008 2009 error = &hostrcb->hcam.u.error.u.type_07_error; 2010 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2011 strim(error->failure_reason); 2012 2013 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 2014 be32_to_cpu(hostrcb->hcam.u.error.prc)); 2015 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd); 2016 ipr_log_hex_data(ioa_cfg, error->data, 2017 be32_to_cpu(hostrcb->hcam.length) - 2018 (offsetof(struct ipr_hostrcb_error, u) + 2019 offsetof(struct ipr_hostrcb_type_07_error, data))); 2020 } 2021 2022 static const struct { 2023 u8 active; 2024 char *desc; 2025 } path_active_desc[] = { 2026 { IPR_PATH_NO_INFO, "Path" }, 2027 { IPR_PATH_ACTIVE, "Active path" }, 2028 { IPR_PATH_NOT_ACTIVE, "Inactive path" } 2029 }; 2030 2031 static const struct { 2032 u8 state; 2033 char *desc; 2034 } path_state_desc[] = { 2035 { IPR_PATH_STATE_NO_INFO, "has no path state information available" }, 2036 { IPR_PATH_HEALTHY, "is healthy" }, 2037 { IPR_PATH_DEGRADED, "is degraded" }, 2038 { IPR_PATH_FAILED, "is failed" } 2039 }; 2040 2041 /** 2042 * ipr_log_fabric_path - Log a fabric path error 2043 * @hostrcb: hostrcb struct 2044 * @fabric: fabric descriptor 2045 * 2046 * Return value: 2047 * none 2048 **/ 2049 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb, 2050 struct ipr_hostrcb_fabric_desc *fabric) 2051 { 2052 int i, j; 2053 u8 path_state = fabric->path_state; 2054 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 2055 u8 state = path_state & IPR_PATH_STATE_MASK; 2056 2057 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 2058 if (path_active_desc[i].active != active) 2059 continue; 2060 2061 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 2062 if (path_state_desc[j].state != state) 2063 continue; 2064 2065 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) { 2066 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n", 2067 path_active_desc[i].desc, path_state_desc[j].desc, 2068 fabric->ioa_port); 2069 } else if (fabric->cascaded_expander == 0xff) { 2070 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n", 2071 path_active_desc[i].desc, path_state_desc[j].desc, 2072 fabric->ioa_port, fabric->phy); 2073 } else if (fabric->phy == 0xff) { 2074 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n", 2075 path_active_desc[i].desc, path_state_desc[j].desc, 2076 fabric->ioa_port, fabric->cascaded_expander); 2077 } else { 2078 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n", 2079 path_active_desc[i].desc, path_state_desc[j].desc, 2080 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 2081 } 2082 return; 2083 } 2084 } 2085 2086 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state, 2087 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 2088 } 2089 2090 /** 2091 * ipr_log64_fabric_path - Log a fabric path error 2092 * @hostrcb: hostrcb struct 2093 * @fabric: fabric descriptor 2094 * 2095 * Return value: 2096 * none 2097 **/ 2098 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb, 2099 struct ipr_hostrcb64_fabric_desc *fabric) 2100 { 2101 int i, j; 2102 u8 path_state = fabric->path_state; 2103 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 2104 u8 state = path_state & IPR_PATH_STATE_MASK; 2105 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2106 2107 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 2108 if (path_active_desc[i].active != active) 2109 continue; 2110 2111 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 2112 if (path_state_desc[j].state != state) 2113 continue; 2114 2115 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n", 2116 path_active_desc[i].desc, path_state_desc[j].desc, 2117 ipr_format_res_path(hostrcb->ioa_cfg, 2118 fabric->res_path, 2119 buffer, sizeof(buffer))); 2120 return; 2121 } 2122 } 2123 2124 ipr_err("Path state=%02X Resource Path=%s\n", path_state, 2125 ipr_format_res_path(hostrcb->ioa_cfg, fabric->res_path, 2126 buffer, sizeof(buffer))); 2127 } 2128 2129 static const struct { 2130 u8 type; 2131 char *desc; 2132 } path_type_desc[] = { 2133 { IPR_PATH_CFG_IOA_PORT, "IOA port" }, 2134 { IPR_PATH_CFG_EXP_PORT, "Expander port" }, 2135 { IPR_PATH_CFG_DEVICE_PORT, "Device port" }, 2136 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" } 2137 }; 2138 2139 static const struct { 2140 u8 status; 2141 char *desc; 2142 } path_status_desc[] = { 2143 { IPR_PATH_CFG_NO_PROB, "Functional" }, 2144 { IPR_PATH_CFG_DEGRADED, "Degraded" }, 2145 { IPR_PATH_CFG_FAILED, "Failed" }, 2146 { IPR_PATH_CFG_SUSPECT, "Suspect" }, 2147 { IPR_PATH_NOT_DETECTED, "Missing" }, 2148 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" } 2149 }; 2150 2151 static const char *link_rate[] = { 2152 "unknown", 2153 "disabled", 2154 "phy reset problem", 2155 "spinup hold", 2156 "port selector", 2157 "unknown", 2158 "unknown", 2159 "unknown", 2160 "1.5Gbps", 2161 "3.0Gbps", 2162 "unknown", 2163 "unknown", 2164 "unknown", 2165 "unknown", 2166 "unknown", 2167 "unknown" 2168 }; 2169 2170 /** 2171 * ipr_log_path_elem - Log a fabric path element. 2172 * @hostrcb: hostrcb struct 2173 * @cfg: fabric path element struct 2174 * 2175 * Return value: 2176 * none 2177 **/ 2178 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb, 2179 struct ipr_hostrcb_config_element *cfg) 2180 { 2181 int i, j; 2182 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 2183 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 2184 2185 if (type == IPR_PATH_CFG_NOT_EXIST) 2186 return; 2187 2188 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 2189 if (path_type_desc[i].type != type) 2190 continue; 2191 2192 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 2193 if (path_status_desc[j].status != status) 2194 continue; 2195 2196 if (type == IPR_PATH_CFG_IOA_PORT) { 2197 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n", 2198 path_status_desc[j].desc, path_type_desc[i].desc, 2199 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2200 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2201 } else { 2202 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) { 2203 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n", 2204 path_status_desc[j].desc, path_type_desc[i].desc, 2205 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2206 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2207 } else if (cfg->cascaded_expander == 0xff) { 2208 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, " 2209 "WWN=%08X%08X\n", path_status_desc[j].desc, 2210 path_type_desc[i].desc, cfg->phy, 2211 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2212 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2213 } else if (cfg->phy == 0xff) { 2214 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, " 2215 "WWN=%08X%08X\n", path_status_desc[j].desc, 2216 path_type_desc[i].desc, cfg->cascaded_expander, 2217 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2218 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2219 } else { 2220 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s " 2221 "WWN=%08X%08X\n", path_status_desc[j].desc, 2222 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy, 2223 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2224 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2225 } 2226 } 2227 return; 2228 } 2229 } 2230 2231 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s " 2232 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy, 2233 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2234 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2235 } 2236 2237 /** 2238 * ipr_log64_path_elem - Log a fabric path element. 2239 * @hostrcb: hostrcb struct 2240 * @cfg: fabric path element struct 2241 * 2242 * Return value: 2243 * none 2244 **/ 2245 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb, 2246 struct ipr_hostrcb64_config_element *cfg) 2247 { 2248 int i, j; 2249 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK; 2250 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 2251 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 2252 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2253 2254 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64) 2255 return; 2256 2257 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 2258 if (path_type_desc[i].type != type) 2259 continue; 2260 2261 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 2262 if (path_status_desc[j].status != status) 2263 continue; 2264 2265 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n", 2266 path_status_desc[j].desc, path_type_desc[i].desc, 2267 ipr_format_res_path(hostrcb->ioa_cfg, 2268 cfg->res_path, buffer, sizeof(buffer)), 2269 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2270 be32_to_cpu(cfg->wwid[0]), 2271 be32_to_cpu(cfg->wwid[1])); 2272 return; 2273 } 2274 } 2275 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s " 2276 "WWN=%08X%08X\n", cfg->type_status, 2277 ipr_format_res_path(hostrcb->ioa_cfg, 2278 cfg->res_path, buffer, sizeof(buffer)), 2279 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2280 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2281 } 2282 2283 /** 2284 * ipr_log_fabric_error - Log a fabric error. 2285 * @ioa_cfg: ioa config struct 2286 * @hostrcb: hostrcb struct 2287 * 2288 * Return value: 2289 * none 2290 **/ 2291 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 2292 struct ipr_hostrcb *hostrcb) 2293 { 2294 struct ipr_hostrcb_type_20_error *error; 2295 struct ipr_hostrcb_fabric_desc *fabric; 2296 struct ipr_hostrcb_config_element *cfg; 2297 int i, add_len; 2298 2299 error = &hostrcb->hcam.u.error.u.type_20_error; 2300 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2301 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 2302 2303 add_len = be32_to_cpu(hostrcb->hcam.length) - 2304 (offsetof(struct ipr_hostrcb_error, u) + 2305 offsetof(struct ipr_hostrcb_type_20_error, desc)); 2306 2307 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 2308 ipr_log_fabric_path(hostrcb, fabric); 2309 for_each_fabric_cfg(fabric, cfg) 2310 ipr_log_path_elem(hostrcb, cfg); 2311 2312 add_len -= be16_to_cpu(fabric->length); 2313 fabric = (struct ipr_hostrcb_fabric_desc *) 2314 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 2315 } 2316 2317 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len); 2318 } 2319 2320 /** 2321 * ipr_log_sis64_array_error - Log a sis64 array error. 2322 * @ioa_cfg: ioa config struct 2323 * @hostrcb: hostrcb struct 2324 * 2325 * Return value: 2326 * none 2327 **/ 2328 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg, 2329 struct ipr_hostrcb *hostrcb) 2330 { 2331 int i, num_entries; 2332 struct ipr_hostrcb_type_24_error *error; 2333 struct ipr_hostrcb64_array_data_entry *array_entry; 2334 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2335 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 2336 2337 error = &hostrcb->hcam.u.error64.u.type_24_error; 2338 2339 ipr_err_separator; 2340 2341 ipr_err("RAID %s Array Configuration: %s\n", 2342 error->protection_level, 2343 ipr_format_res_path(ioa_cfg, error->last_res_path, 2344 buffer, sizeof(buffer))); 2345 2346 ipr_err_separator; 2347 2348 array_entry = error->array_member; 2349 num_entries = min_t(u32, error->num_entries, 2350 ARRAY_SIZE(error->array_member)); 2351 2352 for (i = 0; i < num_entries; i++, array_entry++) { 2353 2354 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 2355 continue; 2356 2357 if (error->exposed_mode_adn == i) 2358 ipr_err("Exposed Array Member %d:\n", i); 2359 else 2360 ipr_err("Array Member %d:\n", i); 2361 2362 ipr_err("Array Member %d:\n", i); 2363 ipr_log_ext_vpd(&array_entry->vpd); 2364 ipr_err("Current Location: %s\n", 2365 ipr_format_res_path(ioa_cfg, array_entry->res_path, 2366 buffer, sizeof(buffer))); 2367 ipr_err("Expected Location: %s\n", 2368 ipr_format_res_path(ioa_cfg, 2369 array_entry->expected_res_path, 2370 buffer, sizeof(buffer))); 2371 2372 ipr_err_separator; 2373 } 2374 } 2375 2376 /** 2377 * ipr_log_sis64_fabric_error - Log a sis64 fabric error. 2378 * @ioa_cfg: ioa config struct 2379 * @hostrcb: hostrcb struct 2380 * 2381 * Return value: 2382 * none 2383 **/ 2384 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 2385 struct ipr_hostrcb *hostrcb) 2386 { 2387 struct ipr_hostrcb_type_30_error *error; 2388 struct ipr_hostrcb64_fabric_desc *fabric; 2389 struct ipr_hostrcb64_config_element *cfg; 2390 int i, add_len; 2391 2392 error = &hostrcb->hcam.u.error64.u.type_30_error; 2393 2394 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2395 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 2396 2397 add_len = be32_to_cpu(hostrcb->hcam.length) - 2398 (offsetof(struct ipr_hostrcb64_error, u) + 2399 offsetof(struct ipr_hostrcb_type_30_error, desc)); 2400 2401 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 2402 ipr_log64_fabric_path(hostrcb, fabric); 2403 for_each_fabric_cfg(fabric, cfg) 2404 ipr_log64_path_elem(hostrcb, cfg); 2405 2406 add_len -= be16_to_cpu(fabric->length); 2407 fabric = (struct ipr_hostrcb64_fabric_desc *) 2408 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 2409 } 2410 2411 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len); 2412 } 2413 2414 /** 2415 * ipr_log_generic_error - Log an adapter error. 2416 * @ioa_cfg: ioa config struct 2417 * @hostrcb: hostrcb struct 2418 * 2419 * Return value: 2420 * none 2421 **/ 2422 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, 2423 struct ipr_hostrcb *hostrcb) 2424 { 2425 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data, 2426 be32_to_cpu(hostrcb->hcam.length)); 2427 } 2428 2429 /** 2430 * ipr_log_sis64_device_error - Log a cache error. 2431 * @ioa_cfg: ioa config struct 2432 * @hostrcb: hostrcb struct 2433 * 2434 * Return value: 2435 * none 2436 **/ 2437 static void ipr_log_sis64_device_error(struct ipr_ioa_cfg *ioa_cfg, 2438 struct ipr_hostrcb *hostrcb) 2439 { 2440 struct ipr_hostrcb_type_21_error *error; 2441 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2442 2443 error = &hostrcb->hcam.u.error64.u.type_21_error; 2444 2445 ipr_err("-----Failing Device Information-----\n"); 2446 ipr_err("World Wide Unique ID: %08X%08X%08X%08X\n", 2447 be32_to_cpu(error->wwn[0]), be32_to_cpu(error->wwn[1]), 2448 be32_to_cpu(error->wwn[2]), be32_to_cpu(error->wwn[3])); 2449 ipr_err("Device Resource Path: %s\n", 2450 __ipr_format_res_path(error->res_path, 2451 buffer, sizeof(buffer))); 2452 error->primary_problem_desc[sizeof(error->primary_problem_desc) - 1] = '\0'; 2453 error->second_problem_desc[sizeof(error->second_problem_desc) - 1] = '\0'; 2454 ipr_err("Primary Problem Description: %s\n", error->primary_problem_desc); 2455 ipr_err("Secondary Problem Description: %s\n", error->second_problem_desc); 2456 ipr_err("SCSI Sense Data:\n"); 2457 ipr_log_hex_data(ioa_cfg, error->sense_data, sizeof(error->sense_data)); 2458 ipr_err("SCSI Command Descriptor Block: \n"); 2459 ipr_log_hex_data(ioa_cfg, error->cdb, sizeof(error->cdb)); 2460 2461 ipr_err("Additional IOA Data:\n"); 2462 ipr_log_hex_data(ioa_cfg, error->ioa_data, be32_to_cpu(error->length_of_error)); 2463 } 2464 2465 /** 2466 * ipr_get_error - Find the specfied IOASC in the ipr_error_table. 2467 * @ioasc: IOASC 2468 * 2469 * This function will return the index of into the ipr_error_table 2470 * for the specified IOASC. If the IOASC is not in the table, 2471 * 0 will be returned, which points to the entry used for unknown errors. 2472 * 2473 * Return value: 2474 * index into the ipr_error_table 2475 **/ 2476 static u32 ipr_get_error(u32 ioasc) 2477 { 2478 int i; 2479 2480 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) 2481 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK)) 2482 return i; 2483 2484 return 0; 2485 } 2486 2487 /** 2488 * ipr_handle_log_data - Log an adapter error. 2489 * @ioa_cfg: ioa config struct 2490 * @hostrcb: hostrcb struct 2491 * 2492 * This function logs an adapter error to the system. 2493 * 2494 * Return value: 2495 * none 2496 **/ 2497 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 2498 struct ipr_hostrcb *hostrcb) 2499 { 2500 u32 ioasc; 2501 int error_index; 2502 struct ipr_hostrcb_type_21_error *error; 2503 2504 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) 2505 return; 2506 2507 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) 2508 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); 2509 2510 if (ioa_cfg->sis64) 2511 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc); 2512 else 2513 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 2514 2515 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET || 2516 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) { 2517 /* Tell the midlayer we had a bus reset so it will handle the UA properly */ 2518 scsi_report_bus_reset(ioa_cfg->host, 2519 hostrcb->hcam.u.error.fd_res_addr.bus); 2520 } 2521 2522 error_index = ipr_get_error(ioasc); 2523 2524 if (!ipr_error_table[error_index].log_hcam) 2525 return; 2526 2527 if (ioasc == IPR_IOASC_HW_CMD_FAILED && 2528 hostrcb->hcam.overlay_id == IPR_HOST_RCB_OVERLAY_ID_21) { 2529 error = &hostrcb->hcam.u.error64.u.type_21_error; 2530 2531 if (((be32_to_cpu(error->sense_data[0]) & 0x0000ff00) >> 8) == ILLEGAL_REQUEST && 2532 ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 2533 return; 2534 } 2535 2536 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error); 2537 2538 /* Set indication we have logged an error */ 2539 ioa_cfg->errors_logged++; 2540 2541 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam) 2542 return; 2543 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw)) 2544 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw)); 2545 2546 switch (hostrcb->hcam.overlay_id) { 2547 case IPR_HOST_RCB_OVERLAY_ID_2: 2548 ipr_log_cache_error(ioa_cfg, hostrcb); 2549 break; 2550 case IPR_HOST_RCB_OVERLAY_ID_3: 2551 ipr_log_config_error(ioa_cfg, hostrcb); 2552 break; 2553 case IPR_HOST_RCB_OVERLAY_ID_4: 2554 case IPR_HOST_RCB_OVERLAY_ID_6: 2555 ipr_log_array_error(ioa_cfg, hostrcb); 2556 break; 2557 case IPR_HOST_RCB_OVERLAY_ID_7: 2558 ipr_log_dual_ioa_error(ioa_cfg, hostrcb); 2559 break; 2560 case IPR_HOST_RCB_OVERLAY_ID_12: 2561 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb); 2562 break; 2563 case IPR_HOST_RCB_OVERLAY_ID_13: 2564 ipr_log_enhanced_config_error(ioa_cfg, hostrcb); 2565 break; 2566 case IPR_HOST_RCB_OVERLAY_ID_14: 2567 case IPR_HOST_RCB_OVERLAY_ID_16: 2568 ipr_log_enhanced_array_error(ioa_cfg, hostrcb); 2569 break; 2570 case IPR_HOST_RCB_OVERLAY_ID_17: 2571 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb); 2572 break; 2573 case IPR_HOST_RCB_OVERLAY_ID_20: 2574 ipr_log_fabric_error(ioa_cfg, hostrcb); 2575 break; 2576 case IPR_HOST_RCB_OVERLAY_ID_21: 2577 ipr_log_sis64_device_error(ioa_cfg, hostrcb); 2578 break; 2579 case IPR_HOST_RCB_OVERLAY_ID_23: 2580 ipr_log_sis64_config_error(ioa_cfg, hostrcb); 2581 break; 2582 case IPR_HOST_RCB_OVERLAY_ID_24: 2583 case IPR_HOST_RCB_OVERLAY_ID_26: 2584 ipr_log_sis64_array_error(ioa_cfg, hostrcb); 2585 break; 2586 case IPR_HOST_RCB_OVERLAY_ID_30: 2587 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb); 2588 break; 2589 case IPR_HOST_RCB_OVERLAY_ID_1: 2590 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: 2591 default: 2592 ipr_log_generic_error(ioa_cfg, hostrcb); 2593 break; 2594 } 2595 } 2596 2597 static struct ipr_hostrcb *ipr_get_free_hostrcb(struct ipr_ioa_cfg *ioa) 2598 { 2599 struct ipr_hostrcb *hostrcb; 2600 2601 hostrcb = list_first_entry_or_null(&ioa->hostrcb_free_q, 2602 struct ipr_hostrcb, queue); 2603 2604 if (unlikely(!hostrcb)) { 2605 dev_info(&ioa->pdev->dev, "Reclaiming async error buffers."); 2606 hostrcb = list_first_entry_or_null(&ioa->hostrcb_report_q, 2607 struct ipr_hostrcb, queue); 2608 } 2609 2610 list_del_init(&hostrcb->queue); 2611 return hostrcb; 2612 } 2613 2614 /** 2615 * ipr_process_error - Op done function for an adapter error log. 2616 * @ipr_cmd: ipr command struct 2617 * 2618 * This function is the op done function for an error log host 2619 * controlled async from the adapter. It will log the error and 2620 * send the HCAM back to the adapter. 2621 * 2622 * Return value: 2623 * none 2624 **/ 2625 static void ipr_process_error(struct ipr_cmnd *ipr_cmd) 2626 { 2627 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2628 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 2629 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 2630 u32 fd_ioasc; 2631 2632 if (ioa_cfg->sis64) 2633 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc); 2634 else 2635 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 2636 2637 list_del_init(&hostrcb->queue); 2638 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 2639 2640 if (!ioasc) { 2641 ipr_handle_log_data(ioa_cfg, hostrcb); 2642 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED) 2643 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV); 2644 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET && 2645 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) { 2646 dev_err(&ioa_cfg->pdev->dev, 2647 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 2648 } 2649 2650 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_report_q); 2651 schedule_work(&ioa_cfg->work_q); 2652 hostrcb = ipr_get_free_hostrcb(ioa_cfg); 2653 2654 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 2655 } 2656 2657 /** 2658 * ipr_timeout - An internally generated op has timed out. 2659 * @ipr_cmd: ipr command struct 2660 * 2661 * This function blocks host requests and initiates an 2662 * adapter reset. 2663 * 2664 * Return value: 2665 * none 2666 **/ 2667 static void ipr_timeout(struct ipr_cmnd *ipr_cmd) 2668 { 2669 unsigned long lock_flags = 0; 2670 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2671 2672 ENTER; 2673 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2674 2675 ioa_cfg->errors_logged++; 2676 dev_err(&ioa_cfg->pdev->dev, 2677 "Adapter being reset due to command timeout.\n"); 2678 2679 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 2680 ioa_cfg->sdt_state = GET_DUMP; 2681 2682 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) 2683 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2684 2685 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2686 LEAVE; 2687 } 2688 2689 /** 2690 * ipr_oper_timeout - Adapter timed out transitioning to operational 2691 * @ipr_cmd: ipr command struct 2692 * 2693 * This function blocks host requests and initiates an 2694 * adapter reset. 2695 * 2696 * Return value: 2697 * none 2698 **/ 2699 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) 2700 { 2701 unsigned long lock_flags = 0; 2702 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2703 2704 ENTER; 2705 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2706 2707 ioa_cfg->errors_logged++; 2708 dev_err(&ioa_cfg->pdev->dev, 2709 "Adapter timed out transitioning to operational.\n"); 2710 2711 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 2712 ioa_cfg->sdt_state = GET_DUMP; 2713 2714 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { 2715 if (ipr_fastfail) 2716 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 2717 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2718 } 2719 2720 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2721 LEAVE; 2722 } 2723 2724 /** 2725 * ipr_find_ses_entry - Find matching SES in SES table 2726 * @res: resource entry struct of SES 2727 * 2728 * Return value: 2729 * pointer to SES table entry / NULL on failure 2730 **/ 2731 static const struct ipr_ses_table_entry * 2732 ipr_find_ses_entry(struct ipr_resource_entry *res) 2733 { 2734 int i, j, matches; 2735 struct ipr_std_inq_vpids *vpids; 2736 const struct ipr_ses_table_entry *ste = ipr_ses_table; 2737 2738 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { 2739 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { 2740 if (ste->compare_product_id_byte[j] == 'X') { 2741 vpids = &res->std_inq_data.vpids; 2742 if (vpids->product_id[j] == ste->product_id[j]) 2743 matches++; 2744 else 2745 break; 2746 } else 2747 matches++; 2748 } 2749 2750 if (matches == IPR_PROD_ID_LEN) 2751 return ste; 2752 } 2753 2754 return NULL; 2755 } 2756 2757 /** 2758 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus 2759 * @ioa_cfg: ioa config struct 2760 * @bus: SCSI bus 2761 * @bus_width: bus width 2762 * 2763 * Return value: 2764 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz 2765 * For a 2-byte wide SCSI bus, the maximum transfer speed is 2766 * twice the maximum transfer rate (e.g. for a wide enabled bus, 2767 * max 160MHz = max 320MB/sec). 2768 **/ 2769 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) 2770 { 2771 struct ipr_resource_entry *res; 2772 const struct ipr_ses_table_entry *ste; 2773 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); 2774 2775 /* Loop through each config table entry in the config table buffer */ 2776 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2777 if (!(IPR_IS_SES_DEVICE(res->std_inq_data))) 2778 continue; 2779 2780 if (bus != res->bus) 2781 continue; 2782 2783 if (!(ste = ipr_find_ses_entry(res))) 2784 continue; 2785 2786 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); 2787 } 2788 2789 return max_xfer_rate; 2790 } 2791 2792 /** 2793 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA 2794 * @ioa_cfg: ioa config struct 2795 * @max_delay: max delay in micro-seconds to wait 2796 * 2797 * Waits for an IODEBUG ACK from the IOA, doing busy looping. 2798 * 2799 * Return value: 2800 * 0 on success / other on failure 2801 **/ 2802 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) 2803 { 2804 volatile u32 pcii_reg; 2805 int delay = 1; 2806 2807 /* Read interrupt reg until IOA signals IO Debug Acknowledge */ 2808 while (delay < max_delay) { 2809 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 2810 2811 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) 2812 return 0; 2813 2814 /* udelay cannot be used if delay is more than a few milliseconds */ 2815 if ((delay / 1000) > MAX_UDELAY_MS) 2816 mdelay(delay / 1000); 2817 else 2818 udelay(delay); 2819 2820 delay += delay; 2821 } 2822 return -EIO; 2823 } 2824 2825 /** 2826 * ipr_get_sis64_dump_data_section - Dump IOA memory 2827 * @ioa_cfg: ioa config struct 2828 * @start_addr: adapter address to dump 2829 * @dest: destination kernel buffer 2830 * @length_in_words: length to dump in 4 byte words 2831 * 2832 * Return value: 2833 * 0 on success 2834 **/ 2835 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg, 2836 u32 start_addr, 2837 __be32 *dest, u32 length_in_words) 2838 { 2839 int i; 2840 2841 for (i = 0; i < length_in_words; i++) { 2842 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg); 2843 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg)); 2844 dest++; 2845 } 2846 2847 return 0; 2848 } 2849 2850 /** 2851 * ipr_get_ldump_data_section - Dump IOA memory 2852 * @ioa_cfg: ioa config struct 2853 * @start_addr: adapter address to dump 2854 * @dest: destination kernel buffer 2855 * @length_in_words: length to dump in 4 byte words 2856 * 2857 * Return value: 2858 * 0 on success / -EIO on failure 2859 **/ 2860 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, 2861 u32 start_addr, 2862 __be32 *dest, u32 length_in_words) 2863 { 2864 volatile u32 temp_pcii_reg; 2865 int i, delay = 0; 2866 2867 if (ioa_cfg->sis64) 2868 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr, 2869 dest, length_in_words); 2870 2871 /* Write IOA interrupt reg starting LDUMP state */ 2872 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), 2873 ioa_cfg->regs.set_uproc_interrupt_reg32); 2874 2875 /* Wait for IO debug acknowledge */ 2876 if (ipr_wait_iodbg_ack(ioa_cfg, 2877 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { 2878 dev_err(&ioa_cfg->pdev->dev, 2879 "IOA dump long data transfer timeout\n"); 2880 return -EIO; 2881 } 2882 2883 /* Signal LDUMP interlocked - clear IO debug ack */ 2884 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2885 ioa_cfg->regs.clr_interrupt_reg); 2886 2887 /* Write Mailbox with starting address */ 2888 writel(start_addr, ioa_cfg->ioa_mailbox); 2889 2890 /* Signal address valid - clear IOA Reset alert */ 2891 writel(IPR_UPROCI_RESET_ALERT, 2892 ioa_cfg->regs.clr_uproc_interrupt_reg32); 2893 2894 for (i = 0; i < length_in_words; i++) { 2895 /* Wait for IO debug acknowledge */ 2896 if (ipr_wait_iodbg_ack(ioa_cfg, 2897 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { 2898 dev_err(&ioa_cfg->pdev->dev, 2899 "IOA dump short data transfer timeout\n"); 2900 return -EIO; 2901 } 2902 2903 /* Read data from mailbox and increment destination pointer */ 2904 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); 2905 dest++; 2906 2907 /* For all but the last word of data, signal data received */ 2908 if (i < (length_in_words - 1)) { 2909 /* Signal dump data received - Clear IO debug Ack */ 2910 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2911 ioa_cfg->regs.clr_interrupt_reg); 2912 } 2913 } 2914 2915 /* Signal end of block transfer. Set reset alert then clear IO debug ack */ 2916 writel(IPR_UPROCI_RESET_ALERT, 2917 ioa_cfg->regs.set_uproc_interrupt_reg32); 2918 2919 writel(IPR_UPROCI_IO_DEBUG_ALERT, 2920 ioa_cfg->regs.clr_uproc_interrupt_reg32); 2921 2922 /* Signal dump data received - Clear IO debug Ack */ 2923 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2924 ioa_cfg->regs.clr_interrupt_reg); 2925 2926 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ 2927 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { 2928 temp_pcii_reg = 2929 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); 2930 2931 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) 2932 return 0; 2933 2934 udelay(10); 2935 delay += 10; 2936 } 2937 2938 return 0; 2939 } 2940 2941 #ifdef CONFIG_SCSI_IPR_DUMP 2942 /** 2943 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer 2944 * @ioa_cfg: ioa config struct 2945 * @pci_address: adapter address 2946 * @length: length of data to copy 2947 * 2948 * Copy data from PCI adapter to kernel buffer. 2949 * Note: length MUST be a 4 byte multiple 2950 * Return value: 2951 * 0 on success / other on failure 2952 **/ 2953 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, 2954 unsigned long pci_address, u32 length) 2955 { 2956 int bytes_copied = 0; 2957 int cur_len, rc, rem_len, rem_page_len, max_dump_size; 2958 __be32 *page; 2959 unsigned long lock_flags = 0; 2960 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; 2961 2962 if (ioa_cfg->sis64) 2963 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE; 2964 else 2965 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE; 2966 2967 while (bytes_copied < length && 2968 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) { 2969 if (ioa_dump->page_offset >= PAGE_SIZE || 2970 ioa_dump->page_offset == 0) { 2971 page = (__be32 *)__get_free_page(GFP_ATOMIC); 2972 2973 if (!page) { 2974 ipr_trace; 2975 return bytes_copied; 2976 } 2977 2978 ioa_dump->page_offset = 0; 2979 ioa_dump->ioa_data[ioa_dump->next_page_index] = page; 2980 ioa_dump->next_page_index++; 2981 } else 2982 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; 2983 2984 rem_len = length - bytes_copied; 2985 rem_page_len = PAGE_SIZE - ioa_dump->page_offset; 2986 cur_len = min(rem_len, rem_page_len); 2987 2988 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2989 if (ioa_cfg->sdt_state == ABORT_DUMP) { 2990 rc = -EIO; 2991 } else { 2992 rc = ipr_get_ldump_data_section(ioa_cfg, 2993 pci_address + bytes_copied, 2994 &page[ioa_dump->page_offset / 4], 2995 (cur_len / sizeof(u32))); 2996 } 2997 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2998 2999 if (!rc) { 3000 ioa_dump->page_offset += cur_len; 3001 bytes_copied += cur_len; 3002 } else { 3003 ipr_trace; 3004 break; 3005 } 3006 schedule(); 3007 } 3008 3009 return bytes_copied; 3010 } 3011 3012 /** 3013 * ipr_init_dump_entry_hdr - Initialize a dump entry header. 3014 * @hdr: dump entry header struct 3015 * 3016 * Return value: 3017 * nothing 3018 **/ 3019 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) 3020 { 3021 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; 3022 hdr->num_elems = 1; 3023 hdr->offset = sizeof(*hdr); 3024 hdr->status = IPR_DUMP_STATUS_SUCCESS; 3025 } 3026 3027 /** 3028 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. 3029 * @ioa_cfg: ioa config struct 3030 * @driver_dump: driver dump struct 3031 * 3032 * Return value: 3033 * nothing 3034 **/ 3035 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, 3036 struct ipr_driver_dump *driver_dump) 3037 { 3038 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 3039 3040 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); 3041 driver_dump->ioa_type_entry.hdr.len = 3042 sizeof(struct ipr_dump_ioa_type_entry) - 3043 sizeof(struct ipr_dump_entry_header); 3044 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 3045 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; 3046 driver_dump->ioa_type_entry.type = ioa_cfg->type; 3047 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | 3048 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | 3049 ucode_vpd->minor_release[1]; 3050 driver_dump->hdr.num_entries++; 3051 } 3052 3053 /** 3054 * ipr_dump_version_data - Fill in the driver version in the dump. 3055 * @ioa_cfg: ioa config struct 3056 * @driver_dump: driver dump struct 3057 * 3058 * Return value: 3059 * nothing 3060 **/ 3061 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, 3062 struct ipr_driver_dump *driver_dump) 3063 { 3064 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); 3065 driver_dump->version_entry.hdr.len = 3066 sizeof(struct ipr_dump_version_entry) - 3067 sizeof(struct ipr_dump_entry_header); 3068 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 3069 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; 3070 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); 3071 driver_dump->hdr.num_entries++; 3072 } 3073 3074 /** 3075 * ipr_dump_trace_data - Fill in the IOA trace in the dump. 3076 * @ioa_cfg: ioa config struct 3077 * @driver_dump: driver dump struct 3078 * 3079 * Return value: 3080 * nothing 3081 **/ 3082 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, 3083 struct ipr_driver_dump *driver_dump) 3084 { 3085 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); 3086 driver_dump->trace_entry.hdr.len = 3087 sizeof(struct ipr_dump_trace_entry) - 3088 sizeof(struct ipr_dump_entry_header); 3089 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 3090 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; 3091 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); 3092 driver_dump->hdr.num_entries++; 3093 } 3094 3095 /** 3096 * ipr_dump_location_data - Fill in the IOA location in the dump. 3097 * @ioa_cfg: ioa config struct 3098 * @driver_dump: driver dump struct 3099 * 3100 * Return value: 3101 * nothing 3102 **/ 3103 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, 3104 struct ipr_driver_dump *driver_dump) 3105 { 3106 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); 3107 driver_dump->location_entry.hdr.len = 3108 sizeof(struct ipr_dump_location_entry) - 3109 sizeof(struct ipr_dump_entry_header); 3110 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 3111 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; 3112 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev)); 3113 driver_dump->hdr.num_entries++; 3114 } 3115 3116 /** 3117 * ipr_get_ioa_dump - Perform a dump of the driver and adapter. 3118 * @ioa_cfg: ioa config struct 3119 * @dump: dump struct 3120 * 3121 * Return value: 3122 * nothing 3123 **/ 3124 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) 3125 { 3126 unsigned long start_addr, sdt_word; 3127 unsigned long lock_flags = 0; 3128 struct ipr_driver_dump *driver_dump = &dump->driver_dump; 3129 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; 3130 u32 num_entries, max_num_entries, start_off, end_off; 3131 u32 max_dump_size, bytes_to_copy, bytes_copied, rc; 3132 struct ipr_sdt *sdt; 3133 int valid = 1; 3134 int i; 3135 3136 ENTER; 3137 3138 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3139 3140 if (ioa_cfg->sdt_state != READ_DUMP) { 3141 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3142 return; 3143 } 3144 3145 if (ioa_cfg->sis64) { 3146 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3147 ssleep(IPR_DUMP_DELAY_SECONDS); 3148 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3149 } 3150 3151 start_addr = readl(ioa_cfg->ioa_mailbox); 3152 3153 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) { 3154 dev_err(&ioa_cfg->pdev->dev, 3155 "Invalid dump table format: %lx\n", start_addr); 3156 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3157 return; 3158 } 3159 3160 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); 3161 3162 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; 3163 3164 /* Initialize the overall dump header */ 3165 driver_dump->hdr.len = sizeof(struct ipr_driver_dump); 3166 driver_dump->hdr.num_entries = 1; 3167 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); 3168 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; 3169 driver_dump->hdr.os = IPR_DUMP_OS_LINUX; 3170 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; 3171 3172 ipr_dump_version_data(ioa_cfg, driver_dump); 3173 ipr_dump_location_data(ioa_cfg, driver_dump); 3174 ipr_dump_ioa_type_data(ioa_cfg, driver_dump); 3175 ipr_dump_trace_data(ioa_cfg, driver_dump); 3176 3177 /* Update dump_header */ 3178 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); 3179 3180 /* IOA Dump entry */ 3181 ipr_init_dump_entry_hdr(&ioa_dump->hdr); 3182 ioa_dump->hdr.len = 0; 3183 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 3184 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; 3185 3186 /* First entries in sdt are actually a list of dump addresses and 3187 lengths to gather the real dump data. sdt represents the pointer 3188 to the ioa generated dump table. Dump data will be extracted based 3189 on entries in this table */ 3190 sdt = &ioa_dump->sdt; 3191 3192 if (ioa_cfg->sis64) { 3193 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES; 3194 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE; 3195 } else { 3196 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES; 3197 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE; 3198 } 3199 3200 bytes_to_copy = offsetof(struct ipr_sdt, entry) + 3201 (max_num_entries * sizeof(struct ipr_sdt_entry)); 3202 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, 3203 bytes_to_copy / sizeof(__be32)); 3204 3205 /* Smart Dump table is ready to use and the first entry is valid */ 3206 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) && 3207 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) { 3208 dev_err(&ioa_cfg->pdev->dev, 3209 "Dump of IOA failed. Dump table not valid: %d, %X.\n", 3210 rc, be32_to_cpu(sdt->hdr.state)); 3211 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; 3212 ioa_cfg->sdt_state = DUMP_OBTAINED; 3213 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3214 return; 3215 } 3216 3217 num_entries = be32_to_cpu(sdt->hdr.num_entries_used); 3218 3219 if (num_entries > max_num_entries) 3220 num_entries = max_num_entries; 3221 3222 /* Update dump length to the actual data to be copied */ 3223 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header); 3224 if (ioa_cfg->sis64) 3225 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry); 3226 else 3227 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry); 3228 3229 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3230 3231 for (i = 0; i < num_entries; i++) { 3232 if (ioa_dump->hdr.len > max_dump_size) { 3233 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 3234 break; 3235 } 3236 3237 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { 3238 sdt_word = be32_to_cpu(sdt->entry[i].start_token); 3239 if (ioa_cfg->sis64) 3240 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token); 3241 else { 3242 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; 3243 end_off = be32_to_cpu(sdt->entry[i].end_token); 3244 3245 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) 3246 bytes_to_copy = end_off - start_off; 3247 else 3248 valid = 0; 3249 } 3250 if (valid) { 3251 if (bytes_to_copy > max_dump_size) { 3252 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; 3253 continue; 3254 } 3255 3256 /* Copy data from adapter to driver buffers */ 3257 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, 3258 bytes_to_copy); 3259 3260 ioa_dump->hdr.len += bytes_copied; 3261 3262 if (bytes_copied != bytes_to_copy) { 3263 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 3264 break; 3265 } 3266 } 3267 } 3268 } 3269 3270 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); 3271 3272 /* Update dump_header */ 3273 driver_dump->hdr.len += ioa_dump->hdr.len; 3274 wmb(); 3275 ioa_cfg->sdt_state = DUMP_OBTAINED; 3276 LEAVE; 3277 } 3278 3279 #else 3280 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0) 3281 #endif 3282 3283 /** 3284 * ipr_release_dump - Free adapter dump memory 3285 * @kref: kref struct 3286 * 3287 * Return value: 3288 * nothing 3289 **/ 3290 static void ipr_release_dump(struct kref *kref) 3291 { 3292 struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref); 3293 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; 3294 unsigned long lock_flags = 0; 3295 int i; 3296 3297 ENTER; 3298 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3299 ioa_cfg->dump = NULL; 3300 ioa_cfg->sdt_state = INACTIVE; 3301 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3302 3303 for (i = 0; i < dump->ioa_dump.next_page_index; i++) 3304 free_page((unsigned long) dump->ioa_dump.ioa_data[i]); 3305 3306 vfree(dump->ioa_dump.ioa_data); 3307 kfree(dump); 3308 LEAVE; 3309 } 3310 3311 /** 3312 * ipr_worker_thread - Worker thread 3313 * @work: ioa config struct 3314 * 3315 * Called at task level from a work thread. This function takes care 3316 * of adding and removing device from the mid-layer as configuration 3317 * changes are detected by the adapter. 3318 * 3319 * Return value: 3320 * nothing 3321 **/ 3322 static void ipr_worker_thread(struct work_struct *work) 3323 { 3324 unsigned long lock_flags; 3325 struct ipr_resource_entry *res; 3326 struct scsi_device *sdev; 3327 struct ipr_dump *dump; 3328 struct ipr_ioa_cfg *ioa_cfg = 3329 container_of(work, struct ipr_ioa_cfg, work_q); 3330 u8 bus, target, lun; 3331 int did_work; 3332 3333 ENTER; 3334 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3335 3336 if (ioa_cfg->sdt_state == READ_DUMP) { 3337 dump = ioa_cfg->dump; 3338 if (!dump) { 3339 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3340 return; 3341 } 3342 kref_get(&dump->kref); 3343 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3344 ipr_get_ioa_dump(ioa_cfg, dump); 3345 kref_put(&dump->kref, ipr_release_dump); 3346 3347 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3348 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout) 3349 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3350 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3351 return; 3352 } 3353 3354 if (!ioa_cfg->scan_enabled) { 3355 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3356 return; 3357 } 3358 3359 restart: 3360 do { 3361 did_work = 0; 3362 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) { 3363 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3364 return; 3365 } 3366 3367 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3368 if (res->del_from_ml && res->sdev) { 3369 did_work = 1; 3370 sdev = res->sdev; 3371 if (!scsi_device_get(sdev)) { 3372 if (!res->add_to_ml) 3373 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 3374 else 3375 res->del_from_ml = 0; 3376 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3377 scsi_remove_device(sdev); 3378 scsi_device_put(sdev); 3379 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3380 } 3381 break; 3382 } 3383 } 3384 } while (did_work); 3385 3386 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3387 if (res->add_to_ml) { 3388 bus = res->bus; 3389 target = res->target; 3390 lun = res->lun; 3391 res->add_to_ml = 0; 3392 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3393 scsi_add_device(ioa_cfg->host, bus, target, lun); 3394 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3395 goto restart; 3396 } 3397 } 3398 3399 ioa_cfg->scan_done = 1; 3400 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3401 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE); 3402 LEAVE; 3403 } 3404 3405 #ifdef CONFIG_SCSI_IPR_TRACE 3406 /** 3407 * ipr_read_trace - Dump the adapter trace 3408 * @filp: open sysfs file 3409 * @kobj: kobject struct 3410 * @bin_attr: bin_attribute struct 3411 * @buf: buffer 3412 * @off: offset 3413 * @count: buffer size 3414 * 3415 * Return value: 3416 * number of bytes printed to buffer 3417 **/ 3418 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj, 3419 struct bin_attribute *bin_attr, 3420 char *buf, loff_t off, size_t count) 3421 { 3422 struct device *dev = container_of(kobj, struct device, kobj); 3423 struct Scsi_Host *shost = class_to_shost(dev); 3424 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3425 unsigned long lock_flags = 0; 3426 ssize_t ret; 3427 3428 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3429 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace, 3430 IPR_TRACE_SIZE); 3431 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3432 3433 return ret; 3434 } 3435 3436 static struct bin_attribute ipr_trace_attr = { 3437 .attr = { 3438 .name = "trace", 3439 .mode = S_IRUGO, 3440 }, 3441 .size = 0, 3442 .read = ipr_read_trace, 3443 }; 3444 #endif 3445 3446 /** 3447 * ipr_show_fw_version - Show the firmware version 3448 * @dev: class device struct 3449 * @buf: buffer 3450 * 3451 * Return value: 3452 * number of bytes printed to buffer 3453 **/ 3454 static ssize_t ipr_show_fw_version(struct device *dev, 3455 struct device_attribute *attr, char *buf) 3456 { 3457 struct Scsi_Host *shost = class_to_shost(dev); 3458 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3459 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 3460 unsigned long lock_flags = 0; 3461 int len; 3462 3463 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3464 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 3465 ucode_vpd->major_release, ucode_vpd->card_type, 3466 ucode_vpd->minor_release[0], 3467 ucode_vpd->minor_release[1]); 3468 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3469 return len; 3470 } 3471 3472 static struct device_attribute ipr_fw_version_attr = { 3473 .attr = { 3474 .name = "fw_version", 3475 .mode = S_IRUGO, 3476 }, 3477 .show = ipr_show_fw_version, 3478 }; 3479 3480 /** 3481 * ipr_show_log_level - Show the adapter's error logging level 3482 * @dev: class device struct 3483 * @buf: buffer 3484 * 3485 * Return value: 3486 * number of bytes printed to buffer 3487 **/ 3488 static ssize_t ipr_show_log_level(struct device *dev, 3489 struct device_attribute *attr, char *buf) 3490 { 3491 struct Scsi_Host *shost = class_to_shost(dev); 3492 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3493 unsigned long lock_flags = 0; 3494 int len; 3495 3496 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3497 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 3498 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3499 return len; 3500 } 3501 3502 /** 3503 * ipr_store_log_level - Change the adapter's error logging level 3504 * @dev: class device struct 3505 * @buf: buffer 3506 * 3507 * Return value: 3508 * number of bytes printed to buffer 3509 **/ 3510 static ssize_t ipr_store_log_level(struct device *dev, 3511 struct device_attribute *attr, 3512 const char *buf, size_t count) 3513 { 3514 struct Scsi_Host *shost = class_to_shost(dev); 3515 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3516 unsigned long lock_flags = 0; 3517 3518 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3519 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 3520 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3521 return strlen(buf); 3522 } 3523 3524 static struct device_attribute ipr_log_level_attr = { 3525 .attr = { 3526 .name = "log_level", 3527 .mode = S_IRUGO | S_IWUSR, 3528 }, 3529 .show = ipr_show_log_level, 3530 .store = ipr_store_log_level 3531 }; 3532 3533 /** 3534 * ipr_store_diagnostics - IOA Diagnostics interface 3535 * @dev: device struct 3536 * @buf: buffer 3537 * @count: buffer size 3538 * 3539 * This function will reset the adapter and wait a reasonable 3540 * amount of time for any errors that the adapter might log. 3541 * 3542 * Return value: 3543 * count on success / other on failure 3544 **/ 3545 static ssize_t ipr_store_diagnostics(struct device *dev, 3546 struct device_attribute *attr, 3547 const char *buf, size_t count) 3548 { 3549 struct Scsi_Host *shost = class_to_shost(dev); 3550 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3551 unsigned long lock_flags = 0; 3552 int rc = count; 3553 3554 if (!capable(CAP_SYS_ADMIN)) 3555 return -EACCES; 3556 3557 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3558 while (ioa_cfg->in_reset_reload) { 3559 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3560 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3561 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3562 } 3563 3564 ioa_cfg->errors_logged = 0; 3565 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3566 3567 if (ioa_cfg->in_reset_reload) { 3568 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3569 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3570 3571 /* Wait for a second for any errors to be logged */ 3572 msleep(1000); 3573 } else { 3574 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3575 return -EIO; 3576 } 3577 3578 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3579 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 3580 rc = -EIO; 3581 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3582 3583 return rc; 3584 } 3585 3586 static struct device_attribute ipr_diagnostics_attr = { 3587 .attr = { 3588 .name = "run_diagnostics", 3589 .mode = S_IWUSR, 3590 }, 3591 .store = ipr_store_diagnostics 3592 }; 3593 3594 /** 3595 * ipr_show_adapter_state - Show the adapter's state 3596 * @class_dev: device struct 3597 * @buf: buffer 3598 * 3599 * Return value: 3600 * number of bytes printed to buffer 3601 **/ 3602 static ssize_t ipr_show_adapter_state(struct device *dev, 3603 struct device_attribute *attr, char *buf) 3604 { 3605 struct Scsi_Host *shost = class_to_shost(dev); 3606 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3607 unsigned long lock_flags = 0; 3608 int len; 3609 3610 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3611 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 3612 len = snprintf(buf, PAGE_SIZE, "offline\n"); 3613 else 3614 len = snprintf(buf, PAGE_SIZE, "online\n"); 3615 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3616 return len; 3617 } 3618 3619 /** 3620 * ipr_store_adapter_state - Change adapter state 3621 * @dev: device struct 3622 * @buf: buffer 3623 * @count: buffer size 3624 * 3625 * This function will change the adapter's state. 3626 * 3627 * Return value: 3628 * count on success / other on failure 3629 **/ 3630 static ssize_t ipr_store_adapter_state(struct device *dev, 3631 struct device_attribute *attr, 3632 const char *buf, size_t count) 3633 { 3634 struct Scsi_Host *shost = class_to_shost(dev); 3635 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3636 unsigned long lock_flags; 3637 int result = count, i; 3638 3639 if (!capable(CAP_SYS_ADMIN)) 3640 return -EACCES; 3641 3642 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3643 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && 3644 !strncmp(buf, "online", 6)) { 3645 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 3646 spin_lock(&ioa_cfg->hrrq[i]._lock); 3647 ioa_cfg->hrrq[i].ioa_is_dead = 0; 3648 spin_unlock(&ioa_cfg->hrrq[i]._lock); 3649 } 3650 wmb(); 3651 ioa_cfg->reset_retries = 0; 3652 ioa_cfg->in_ioa_bringdown = 0; 3653 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3654 } 3655 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3656 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3657 3658 return result; 3659 } 3660 3661 static struct device_attribute ipr_ioa_state_attr = { 3662 .attr = { 3663 .name = "online_state", 3664 .mode = S_IRUGO | S_IWUSR, 3665 }, 3666 .show = ipr_show_adapter_state, 3667 .store = ipr_store_adapter_state 3668 }; 3669 3670 /** 3671 * ipr_store_reset_adapter - Reset the adapter 3672 * @dev: device struct 3673 * @buf: buffer 3674 * @count: buffer size 3675 * 3676 * This function will reset the adapter. 3677 * 3678 * Return value: 3679 * count on success / other on failure 3680 **/ 3681 static ssize_t ipr_store_reset_adapter(struct device *dev, 3682 struct device_attribute *attr, 3683 const char *buf, size_t count) 3684 { 3685 struct Scsi_Host *shost = class_to_shost(dev); 3686 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3687 unsigned long lock_flags; 3688 int result = count; 3689 3690 if (!capable(CAP_SYS_ADMIN)) 3691 return -EACCES; 3692 3693 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3694 if (!ioa_cfg->in_reset_reload) 3695 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3696 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3697 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3698 3699 return result; 3700 } 3701 3702 static struct device_attribute ipr_ioa_reset_attr = { 3703 .attr = { 3704 .name = "reset_host", 3705 .mode = S_IWUSR, 3706 }, 3707 .store = ipr_store_reset_adapter 3708 }; 3709 3710 static int ipr_iopoll(struct irq_poll *iop, int budget); 3711 /** 3712 * ipr_show_iopoll_weight - Show ipr polling mode 3713 * @dev: class device struct 3714 * @buf: buffer 3715 * 3716 * Return value: 3717 * number of bytes printed to buffer 3718 **/ 3719 static ssize_t ipr_show_iopoll_weight(struct device *dev, 3720 struct device_attribute *attr, char *buf) 3721 { 3722 struct Scsi_Host *shost = class_to_shost(dev); 3723 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3724 unsigned long lock_flags = 0; 3725 int len; 3726 3727 spin_lock_irqsave(shost->host_lock, lock_flags); 3728 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight); 3729 spin_unlock_irqrestore(shost->host_lock, lock_flags); 3730 3731 return len; 3732 } 3733 3734 /** 3735 * ipr_store_iopoll_weight - Change the adapter's polling mode 3736 * @dev: class device struct 3737 * @buf: buffer 3738 * 3739 * Return value: 3740 * number of bytes printed to buffer 3741 **/ 3742 static ssize_t ipr_store_iopoll_weight(struct device *dev, 3743 struct device_attribute *attr, 3744 const char *buf, size_t count) 3745 { 3746 struct Scsi_Host *shost = class_to_shost(dev); 3747 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3748 unsigned long user_iopoll_weight; 3749 unsigned long lock_flags = 0; 3750 int i; 3751 3752 if (!ioa_cfg->sis64) { 3753 dev_info(&ioa_cfg->pdev->dev, "irq_poll not supported on this adapter\n"); 3754 return -EINVAL; 3755 } 3756 if (kstrtoul(buf, 10, &user_iopoll_weight)) 3757 return -EINVAL; 3758 3759 if (user_iopoll_weight > 256) { 3760 dev_info(&ioa_cfg->pdev->dev, "Invalid irq_poll weight. It must be less than 256\n"); 3761 return -EINVAL; 3762 } 3763 3764 if (user_iopoll_weight == ioa_cfg->iopoll_weight) { 3765 dev_info(&ioa_cfg->pdev->dev, "Current irq_poll weight has the same weight\n"); 3766 return strlen(buf); 3767 } 3768 3769 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 3770 for (i = 1; i < ioa_cfg->hrrq_num; i++) 3771 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll); 3772 } 3773 3774 spin_lock_irqsave(shost->host_lock, lock_flags); 3775 ioa_cfg->iopoll_weight = user_iopoll_weight; 3776 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 3777 for (i = 1; i < ioa_cfg->hrrq_num; i++) { 3778 irq_poll_init(&ioa_cfg->hrrq[i].iopoll, 3779 ioa_cfg->iopoll_weight, ipr_iopoll); 3780 } 3781 } 3782 spin_unlock_irqrestore(shost->host_lock, lock_flags); 3783 3784 return strlen(buf); 3785 } 3786 3787 static struct device_attribute ipr_iopoll_weight_attr = { 3788 .attr = { 3789 .name = "iopoll_weight", 3790 .mode = S_IRUGO | S_IWUSR, 3791 }, 3792 .show = ipr_show_iopoll_weight, 3793 .store = ipr_store_iopoll_weight 3794 }; 3795 3796 /** 3797 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 3798 * @buf_len: buffer length 3799 * 3800 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 3801 * list to use for microcode download 3802 * 3803 * Return value: 3804 * pointer to sglist / NULL on failure 3805 **/ 3806 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 3807 { 3808 int sg_size, order, bsize_elem, num_elem, i, j; 3809 struct ipr_sglist *sglist; 3810 struct scatterlist *scatterlist; 3811 struct page *page; 3812 3813 /* Get the minimum size per scatter/gather element */ 3814 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 3815 3816 /* Get the actual size per element */ 3817 order = get_order(sg_size); 3818 3819 /* Determine the actual number of bytes per element */ 3820 bsize_elem = PAGE_SIZE * (1 << order); 3821 3822 /* Determine the actual number of sg entries needed */ 3823 if (buf_len % bsize_elem) 3824 num_elem = (buf_len / bsize_elem) + 1; 3825 else 3826 num_elem = buf_len / bsize_elem; 3827 3828 /* Allocate a scatter/gather list for the DMA */ 3829 sglist = kzalloc(sizeof(struct ipr_sglist) + 3830 (sizeof(struct scatterlist) * (num_elem - 1)), 3831 GFP_KERNEL); 3832 3833 if (sglist == NULL) { 3834 ipr_trace; 3835 return NULL; 3836 } 3837 3838 scatterlist = sglist->scatterlist; 3839 sg_init_table(scatterlist, num_elem); 3840 3841 sglist->order = order; 3842 sglist->num_sg = num_elem; 3843 3844 /* Allocate a bunch of sg elements */ 3845 for (i = 0; i < num_elem; i++) { 3846 page = alloc_pages(GFP_KERNEL, order); 3847 if (!page) { 3848 ipr_trace; 3849 3850 /* Free up what we already allocated */ 3851 for (j = i - 1; j >= 0; j--) 3852 __free_pages(sg_page(&scatterlist[j]), order); 3853 kfree(sglist); 3854 return NULL; 3855 } 3856 3857 sg_set_page(&scatterlist[i], page, 0, 0); 3858 } 3859 3860 return sglist; 3861 } 3862 3863 /** 3864 * ipr_free_ucode_buffer - Frees a microcode download buffer 3865 * @p_dnld: scatter/gather list pointer 3866 * 3867 * Free a DMA'able ucode download buffer previously allocated with 3868 * ipr_alloc_ucode_buffer 3869 * 3870 * Return value: 3871 * nothing 3872 **/ 3873 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 3874 { 3875 int i; 3876 3877 for (i = 0; i < sglist->num_sg; i++) 3878 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order); 3879 3880 kfree(sglist); 3881 } 3882 3883 /** 3884 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 3885 * @sglist: scatter/gather list pointer 3886 * @buffer: buffer pointer 3887 * @len: buffer length 3888 * 3889 * Copy a microcode image from a user buffer into a buffer allocated by 3890 * ipr_alloc_ucode_buffer 3891 * 3892 * Return value: 3893 * 0 on success / other on failure 3894 **/ 3895 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 3896 u8 *buffer, u32 len) 3897 { 3898 int bsize_elem, i, result = 0; 3899 struct scatterlist *scatterlist; 3900 void *kaddr; 3901 3902 /* Determine the actual number of bytes per element */ 3903 bsize_elem = PAGE_SIZE * (1 << sglist->order); 3904 3905 scatterlist = sglist->scatterlist; 3906 3907 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { 3908 struct page *page = sg_page(&scatterlist[i]); 3909 3910 kaddr = kmap(page); 3911 memcpy(kaddr, buffer, bsize_elem); 3912 kunmap(page); 3913 3914 scatterlist[i].length = bsize_elem; 3915 3916 if (result != 0) { 3917 ipr_trace; 3918 return result; 3919 } 3920 } 3921 3922 if (len % bsize_elem) { 3923 struct page *page = sg_page(&scatterlist[i]); 3924 3925 kaddr = kmap(page); 3926 memcpy(kaddr, buffer, len % bsize_elem); 3927 kunmap(page); 3928 3929 scatterlist[i].length = len % bsize_elem; 3930 } 3931 3932 sglist->buffer_len = len; 3933 return result; 3934 } 3935 3936 /** 3937 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL 3938 * @ipr_cmd: ipr command struct 3939 * @sglist: scatter/gather list 3940 * 3941 * Builds a microcode download IOA data list (IOADL). 3942 * 3943 **/ 3944 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd, 3945 struct ipr_sglist *sglist) 3946 { 3947 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3948 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 3949 struct scatterlist *scatterlist = sglist->scatterlist; 3950 int i; 3951 3952 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 3953 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3954 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 3955 3956 ioarcb->ioadl_len = 3957 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 3958 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3959 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE); 3960 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i])); 3961 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i])); 3962 } 3963 3964 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3965 } 3966 3967 /** 3968 * ipr_build_ucode_ioadl - Build a microcode download IOADL 3969 * @ipr_cmd: ipr command struct 3970 * @sglist: scatter/gather list 3971 * 3972 * Builds a microcode download IOA data list (IOADL). 3973 * 3974 **/ 3975 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, 3976 struct ipr_sglist *sglist) 3977 { 3978 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3979 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 3980 struct scatterlist *scatterlist = sglist->scatterlist; 3981 int i; 3982 3983 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 3984 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3985 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 3986 3987 ioarcb->ioadl_len = 3988 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 3989 3990 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3991 ioadl[i].flags_and_data_len = 3992 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); 3993 ioadl[i].address = 3994 cpu_to_be32(sg_dma_address(&scatterlist[i])); 3995 } 3996 3997 ioadl[i-1].flags_and_data_len |= 3998 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3999 } 4000 4001 /** 4002 * ipr_update_ioa_ucode - Update IOA's microcode 4003 * @ioa_cfg: ioa config struct 4004 * @sglist: scatter/gather list 4005 * 4006 * Initiate an adapter reset to update the IOA's microcode 4007 * 4008 * Return value: 4009 * 0 on success / -EIO on failure 4010 **/ 4011 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, 4012 struct ipr_sglist *sglist) 4013 { 4014 unsigned long lock_flags; 4015 4016 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4017 while (ioa_cfg->in_reset_reload) { 4018 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4019 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4020 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4021 } 4022 4023 if (ioa_cfg->ucode_sglist) { 4024 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4025 dev_err(&ioa_cfg->pdev->dev, 4026 "Microcode download already in progress\n"); 4027 return -EIO; 4028 } 4029 4030 sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev, 4031 sglist->scatterlist, sglist->num_sg, 4032 DMA_TO_DEVICE); 4033 4034 if (!sglist->num_dma_sg) { 4035 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4036 dev_err(&ioa_cfg->pdev->dev, 4037 "Failed to map microcode download buffer!\n"); 4038 return -EIO; 4039 } 4040 4041 ioa_cfg->ucode_sglist = sglist; 4042 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 4043 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4044 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4045 4046 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4047 ioa_cfg->ucode_sglist = NULL; 4048 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4049 return 0; 4050 } 4051 4052 /** 4053 * ipr_store_update_fw - Update the firmware on the adapter 4054 * @class_dev: device struct 4055 * @buf: buffer 4056 * @count: buffer size 4057 * 4058 * This function will update the firmware on the adapter. 4059 * 4060 * Return value: 4061 * count on success / other on failure 4062 **/ 4063 static ssize_t ipr_store_update_fw(struct device *dev, 4064 struct device_attribute *attr, 4065 const char *buf, size_t count) 4066 { 4067 struct Scsi_Host *shost = class_to_shost(dev); 4068 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4069 struct ipr_ucode_image_header *image_hdr; 4070 const struct firmware *fw_entry; 4071 struct ipr_sglist *sglist; 4072 char fname[100]; 4073 char *src; 4074 char *endline; 4075 int result, dnld_size; 4076 4077 if (!capable(CAP_SYS_ADMIN)) 4078 return -EACCES; 4079 4080 snprintf(fname, sizeof(fname), "%s", buf); 4081 4082 endline = strchr(fname, '\n'); 4083 if (endline) 4084 *endline = '\0'; 4085 4086 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 4087 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 4088 return -EIO; 4089 } 4090 4091 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 4092 4093 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 4094 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 4095 sglist = ipr_alloc_ucode_buffer(dnld_size); 4096 4097 if (!sglist) { 4098 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 4099 release_firmware(fw_entry); 4100 return -ENOMEM; 4101 } 4102 4103 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 4104 4105 if (result) { 4106 dev_err(&ioa_cfg->pdev->dev, 4107 "Microcode buffer copy to DMA buffer failed\n"); 4108 goto out; 4109 } 4110 4111 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n"); 4112 4113 result = ipr_update_ioa_ucode(ioa_cfg, sglist); 4114 4115 if (!result) 4116 result = count; 4117 out: 4118 ipr_free_ucode_buffer(sglist); 4119 release_firmware(fw_entry); 4120 return result; 4121 } 4122 4123 static struct device_attribute ipr_update_fw_attr = { 4124 .attr = { 4125 .name = "update_fw", 4126 .mode = S_IWUSR, 4127 }, 4128 .store = ipr_store_update_fw 4129 }; 4130 4131 /** 4132 * ipr_show_fw_type - Show the adapter's firmware type. 4133 * @dev: class device struct 4134 * @buf: buffer 4135 * 4136 * Return value: 4137 * number of bytes printed to buffer 4138 **/ 4139 static ssize_t ipr_show_fw_type(struct device *dev, 4140 struct device_attribute *attr, char *buf) 4141 { 4142 struct Scsi_Host *shost = class_to_shost(dev); 4143 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4144 unsigned long lock_flags = 0; 4145 int len; 4146 4147 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4148 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64); 4149 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4150 return len; 4151 } 4152 4153 static struct device_attribute ipr_ioa_fw_type_attr = { 4154 .attr = { 4155 .name = "fw_type", 4156 .mode = S_IRUGO, 4157 }, 4158 .show = ipr_show_fw_type 4159 }; 4160 4161 static ssize_t ipr_read_async_err_log(struct file *filep, struct kobject *kobj, 4162 struct bin_attribute *bin_attr, char *buf, 4163 loff_t off, size_t count) 4164 { 4165 struct device *cdev = container_of(kobj, struct device, kobj); 4166 struct Scsi_Host *shost = class_to_shost(cdev); 4167 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4168 struct ipr_hostrcb *hostrcb; 4169 unsigned long lock_flags = 0; 4170 int ret; 4171 4172 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4173 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q, 4174 struct ipr_hostrcb, queue); 4175 if (!hostrcb) { 4176 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4177 return 0; 4178 } 4179 ret = memory_read_from_buffer(buf, count, &off, &hostrcb->hcam, 4180 sizeof(hostrcb->hcam)); 4181 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4182 return ret; 4183 } 4184 4185 static ssize_t ipr_next_async_err_log(struct file *filep, struct kobject *kobj, 4186 struct bin_attribute *bin_attr, char *buf, 4187 loff_t off, size_t count) 4188 { 4189 struct device *cdev = container_of(kobj, struct device, kobj); 4190 struct Scsi_Host *shost = class_to_shost(cdev); 4191 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4192 struct ipr_hostrcb *hostrcb; 4193 unsigned long lock_flags = 0; 4194 4195 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4196 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q, 4197 struct ipr_hostrcb, queue); 4198 if (!hostrcb) { 4199 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4200 return count; 4201 } 4202 4203 /* Reclaim hostrcb before exit */ 4204 list_move_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 4205 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4206 return count; 4207 } 4208 4209 static struct bin_attribute ipr_ioa_async_err_log = { 4210 .attr = { 4211 .name = "async_err_log", 4212 .mode = S_IRUGO | S_IWUSR, 4213 }, 4214 .size = 0, 4215 .read = ipr_read_async_err_log, 4216 .write = ipr_next_async_err_log 4217 }; 4218 4219 static struct device_attribute *ipr_ioa_attrs[] = { 4220 &ipr_fw_version_attr, 4221 &ipr_log_level_attr, 4222 &ipr_diagnostics_attr, 4223 &ipr_ioa_state_attr, 4224 &ipr_ioa_reset_attr, 4225 &ipr_update_fw_attr, 4226 &ipr_ioa_fw_type_attr, 4227 &ipr_iopoll_weight_attr, 4228 NULL, 4229 }; 4230 4231 #ifdef CONFIG_SCSI_IPR_DUMP 4232 /** 4233 * ipr_read_dump - Dump the adapter 4234 * @filp: open sysfs file 4235 * @kobj: kobject struct 4236 * @bin_attr: bin_attribute struct 4237 * @buf: buffer 4238 * @off: offset 4239 * @count: buffer size 4240 * 4241 * Return value: 4242 * number of bytes printed to buffer 4243 **/ 4244 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj, 4245 struct bin_attribute *bin_attr, 4246 char *buf, loff_t off, size_t count) 4247 { 4248 struct device *cdev = container_of(kobj, struct device, kobj); 4249 struct Scsi_Host *shost = class_to_shost(cdev); 4250 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4251 struct ipr_dump *dump; 4252 unsigned long lock_flags = 0; 4253 char *src; 4254 int len, sdt_end; 4255 size_t rc = count; 4256 4257 if (!capable(CAP_SYS_ADMIN)) 4258 return -EACCES; 4259 4260 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4261 dump = ioa_cfg->dump; 4262 4263 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 4264 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4265 return 0; 4266 } 4267 kref_get(&dump->kref); 4268 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4269 4270 if (off > dump->driver_dump.hdr.len) { 4271 kref_put(&dump->kref, ipr_release_dump); 4272 return 0; 4273 } 4274 4275 if (off + count > dump->driver_dump.hdr.len) { 4276 count = dump->driver_dump.hdr.len - off; 4277 rc = count; 4278 } 4279 4280 if (count && off < sizeof(dump->driver_dump)) { 4281 if (off + count > sizeof(dump->driver_dump)) 4282 len = sizeof(dump->driver_dump) - off; 4283 else 4284 len = count; 4285 src = (u8 *)&dump->driver_dump + off; 4286 memcpy(buf, src, len); 4287 buf += len; 4288 off += len; 4289 count -= len; 4290 } 4291 4292 off -= sizeof(dump->driver_dump); 4293 4294 if (ioa_cfg->sis64) 4295 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) + 4296 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) * 4297 sizeof(struct ipr_sdt_entry)); 4298 else 4299 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) + 4300 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry)); 4301 4302 if (count && off < sdt_end) { 4303 if (off + count > sdt_end) 4304 len = sdt_end - off; 4305 else 4306 len = count; 4307 src = (u8 *)&dump->ioa_dump + off; 4308 memcpy(buf, src, len); 4309 buf += len; 4310 off += len; 4311 count -= len; 4312 } 4313 4314 off -= sdt_end; 4315 4316 while (count) { 4317 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 4318 len = PAGE_ALIGN(off) - off; 4319 else 4320 len = count; 4321 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 4322 src += off & ~PAGE_MASK; 4323 memcpy(buf, src, len); 4324 buf += len; 4325 off += len; 4326 count -= len; 4327 } 4328 4329 kref_put(&dump->kref, ipr_release_dump); 4330 return rc; 4331 } 4332 4333 /** 4334 * ipr_alloc_dump - Prepare for adapter dump 4335 * @ioa_cfg: ioa config struct 4336 * 4337 * Return value: 4338 * 0 on success / other on failure 4339 **/ 4340 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 4341 { 4342 struct ipr_dump *dump; 4343 __be32 **ioa_data; 4344 unsigned long lock_flags = 0; 4345 4346 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); 4347 4348 if (!dump) { 4349 ipr_err("Dump memory allocation failed\n"); 4350 return -ENOMEM; 4351 } 4352 4353 if (ioa_cfg->sis64) 4354 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *)); 4355 else 4356 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *)); 4357 4358 if (!ioa_data) { 4359 ipr_err("Dump memory allocation failed\n"); 4360 kfree(dump); 4361 return -ENOMEM; 4362 } 4363 4364 dump->ioa_dump.ioa_data = ioa_data; 4365 4366 kref_init(&dump->kref); 4367 dump->ioa_cfg = ioa_cfg; 4368 4369 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4370 4371 if (INACTIVE != ioa_cfg->sdt_state) { 4372 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4373 vfree(dump->ioa_dump.ioa_data); 4374 kfree(dump); 4375 return 0; 4376 } 4377 4378 ioa_cfg->dump = dump; 4379 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 4380 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) { 4381 ioa_cfg->dump_taken = 1; 4382 schedule_work(&ioa_cfg->work_q); 4383 } 4384 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4385 4386 return 0; 4387 } 4388 4389 /** 4390 * ipr_free_dump - Free adapter dump memory 4391 * @ioa_cfg: ioa config struct 4392 * 4393 * Return value: 4394 * 0 on success / other on failure 4395 **/ 4396 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 4397 { 4398 struct ipr_dump *dump; 4399 unsigned long lock_flags = 0; 4400 4401 ENTER; 4402 4403 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4404 dump = ioa_cfg->dump; 4405 if (!dump) { 4406 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4407 return 0; 4408 } 4409 4410 ioa_cfg->dump = NULL; 4411 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4412 4413 kref_put(&dump->kref, ipr_release_dump); 4414 4415 LEAVE; 4416 return 0; 4417 } 4418 4419 /** 4420 * ipr_write_dump - Setup dump state of adapter 4421 * @filp: open sysfs file 4422 * @kobj: kobject struct 4423 * @bin_attr: bin_attribute struct 4424 * @buf: buffer 4425 * @off: offset 4426 * @count: buffer size 4427 * 4428 * Return value: 4429 * number of bytes printed to buffer 4430 **/ 4431 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj, 4432 struct bin_attribute *bin_attr, 4433 char *buf, loff_t off, size_t count) 4434 { 4435 struct device *cdev = container_of(kobj, struct device, kobj); 4436 struct Scsi_Host *shost = class_to_shost(cdev); 4437 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4438 int rc; 4439 4440 if (!capable(CAP_SYS_ADMIN)) 4441 return -EACCES; 4442 4443 if (buf[0] == '1') 4444 rc = ipr_alloc_dump(ioa_cfg); 4445 else if (buf[0] == '0') 4446 rc = ipr_free_dump(ioa_cfg); 4447 else 4448 return -EINVAL; 4449 4450 if (rc) 4451 return rc; 4452 else 4453 return count; 4454 } 4455 4456 static struct bin_attribute ipr_dump_attr = { 4457 .attr = { 4458 .name = "dump", 4459 .mode = S_IRUSR | S_IWUSR, 4460 }, 4461 .size = 0, 4462 .read = ipr_read_dump, 4463 .write = ipr_write_dump 4464 }; 4465 #else 4466 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 4467 #endif 4468 4469 /** 4470 * ipr_change_queue_depth - Change the device's queue depth 4471 * @sdev: scsi device struct 4472 * @qdepth: depth to set 4473 * @reason: calling context 4474 * 4475 * Return value: 4476 * actual depth set 4477 **/ 4478 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) 4479 { 4480 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4481 struct ipr_resource_entry *res; 4482 unsigned long lock_flags = 0; 4483 4484 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4485 res = (struct ipr_resource_entry *)sdev->hostdata; 4486 4487 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN) 4488 qdepth = IPR_MAX_CMD_PER_ATA_LUN; 4489 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4490 4491 scsi_change_queue_depth(sdev, qdepth); 4492 return sdev->queue_depth; 4493 } 4494 4495 /** 4496 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 4497 * @dev: device struct 4498 * @attr: device attribute structure 4499 * @buf: buffer 4500 * 4501 * Return value: 4502 * number of bytes printed to buffer 4503 **/ 4504 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) 4505 { 4506 struct scsi_device *sdev = to_scsi_device(dev); 4507 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4508 struct ipr_resource_entry *res; 4509 unsigned long lock_flags = 0; 4510 ssize_t len = -ENXIO; 4511 4512 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4513 res = (struct ipr_resource_entry *)sdev->hostdata; 4514 if (res) 4515 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle); 4516 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4517 return len; 4518 } 4519 4520 static struct device_attribute ipr_adapter_handle_attr = { 4521 .attr = { 4522 .name = "adapter_handle", 4523 .mode = S_IRUSR, 4524 }, 4525 .show = ipr_show_adapter_handle 4526 }; 4527 4528 /** 4529 * ipr_show_resource_path - Show the resource path or the resource address for 4530 * this device. 4531 * @dev: device struct 4532 * @attr: device attribute structure 4533 * @buf: buffer 4534 * 4535 * Return value: 4536 * number of bytes printed to buffer 4537 **/ 4538 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf) 4539 { 4540 struct scsi_device *sdev = to_scsi_device(dev); 4541 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4542 struct ipr_resource_entry *res; 4543 unsigned long lock_flags = 0; 4544 ssize_t len = -ENXIO; 4545 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4546 4547 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4548 res = (struct ipr_resource_entry *)sdev->hostdata; 4549 if (res && ioa_cfg->sis64) 4550 len = snprintf(buf, PAGE_SIZE, "%s\n", 4551 __ipr_format_res_path(res->res_path, buffer, 4552 sizeof(buffer))); 4553 else if (res) 4554 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no, 4555 res->bus, res->target, res->lun); 4556 4557 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4558 return len; 4559 } 4560 4561 static struct device_attribute ipr_resource_path_attr = { 4562 .attr = { 4563 .name = "resource_path", 4564 .mode = S_IRUGO, 4565 }, 4566 .show = ipr_show_resource_path 4567 }; 4568 4569 /** 4570 * ipr_show_device_id - Show the device_id for this device. 4571 * @dev: device struct 4572 * @attr: device attribute structure 4573 * @buf: buffer 4574 * 4575 * Return value: 4576 * number of bytes printed to buffer 4577 **/ 4578 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf) 4579 { 4580 struct scsi_device *sdev = to_scsi_device(dev); 4581 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4582 struct ipr_resource_entry *res; 4583 unsigned long lock_flags = 0; 4584 ssize_t len = -ENXIO; 4585 4586 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4587 res = (struct ipr_resource_entry *)sdev->hostdata; 4588 if (res && ioa_cfg->sis64) 4589 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id)); 4590 else if (res) 4591 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn); 4592 4593 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4594 return len; 4595 } 4596 4597 static struct device_attribute ipr_device_id_attr = { 4598 .attr = { 4599 .name = "device_id", 4600 .mode = S_IRUGO, 4601 }, 4602 .show = ipr_show_device_id 4603 }; 4604 4605 /** 4606 * ipr_show_resource_type - Show the resource type for this device. 4607 * @dev: device struct 4608 * @attr: device attribute structure 4609 * @buf: buffer 4610 * 4611 * Return value: 4612 * number of bytes printed to buffer 4613 **/ 4614 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf) 4615 { 4616 struct scsi_device *sdev = to_scsi_device(dev); 4617 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4618 struct ipr_resource_entry *res; 4619 unsigned long lock_flags = 0; 4620 ssize_t len = -ENXIO; 4621 4622 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4623 res = (struct ipr_resource_entry *)sdev->hostdata; 4624 4625 if (res) 4626 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type); 4627 4628 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4629 return len; 4630 } 4631 4632 static struct device_attribute ipr_resource_type_attr = { 4633 .attr = { 4634 .name = "resource_type", 4635 .mode = S_IRUGO, 4636 }, 4637 .show = ipr_show_resource_type 4638 }; 4639 4640 /** 4641 * ipr_show_raw_mode - Show the adapter's raw mode 4642 * @dev: class device struct 4643 * @buf: buffer 4644 * 4645 * Return value: 4646 * number of bytes printed to buffer 4647 **/ 4648 static ssize_t ipr_show_raw_mode(struct device *dev, 4649 struct device_attribute *attr, char *buf) 4650 { 4651 struct scsi_device *sdev = to_scsi_device(dev); 4652 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4653 struct ipr_resource_entry *res; 4654 unsigned long lock_flags = 0; 4655 ssize_t len; 4656 4657 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4658 res = (struct ipr_resource_entry *)sdev->hostdata; 4659 if (res) 4660 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode); 4661 else 4662 len = -ENXIO; 4663 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4664 return len; 4665 } 4666 4667 /** 4668 * ipr_store_raw_mode - Change the adapter's raw mode 4669 * @dev: class device struct 4670 * @buf: buffer 4671 * 4672 * Return value: 4673 * number of bytes printed to buffer 4674 **/ 4675 static ssize_t ipr_store_raw_mode(struct device *dev, 4676 struct device_attribute *attr, 4677 const char *buf, size_t count) 4678 { 4679 struct scsi_device *sdev = to_scsi_device(dev); 4680 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4681 struct ipr_resource_entry *res; 4682 unsigned long lock_flags = 0; 4683 ssize_t len; 4684 4685 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4686 res = (struct ipr_resource_entry *)sdev->hostdata; 4687 if (res) { 4688 if (ipr_is_af_dasd_device(res)) { 4689 res->raw_mode = simple_strtoul(buf, NULL, 10); 4690 len = strlen(buf); 4691 if (res->sdev) 4692 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n", 4693 res->raw_mode ? "enabled" : "disabled"); 4694 } else 4695 len = -EINVAL; 4696 } else 4697 len = -ENXIO; 4698 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4699 return len; 4700 } 4701 4702 static struct device_attribute ipr_raw_mode_attr = { 4703 .attr = { 4704 .name = "raw_mode", 4705 .mode = S_IRUGO | S_IWUSR, 4706 }, 4707 .show = ipr_show_raw_mode, 4708 .store = ipr_store_raw_mode 4709 }; 4710 4711 static struct device_attribute *ipr_dev_attrs[] = { 4712 &ipr_adapter_handle_attr, 4713 &ipr_resource_path_attr, 4714 &ipr_device_id_attr, 4715 &ipr_resource_type_attr, 4716 &ipr_raw_mode_attr, 4717 NULL, 4718 }; 4719 4720 /** 4721 * ipr_biosparam - Return the HSC mapping 4722 * @sdev: scsi device struct 4723 * @block_device: block device pointer 4724 * @capacity: capacity of the device 4725 * @parm: Array containing returned HSC values. 4726 * 4727 * This function generates the HSC parms that fdisk uses. 4728 * We want to make sure we return something that places partitions 4729 * on 4k boundaries for best performance with the IOA. 4730 * 4731 * Return value: 4732 * 0 on success 4733 **/ 4734 static int ipr_biosparam(struct scsi_device *sdev, 4735 struct block_device *block_device, 4736 sector_t capacity, int *parm) 4737 { 4738 int heads, sectors; 4739 sector_t cylinders; 4740 4741 heads = 128; 4742 sectors = 32; 4743 4744 cylinders = capacity; 4745 sector_div(cylinders, (128 * 32)); 4746 4747 /* return result */ 4748 parm[0] = heads; 4749 parm[1] = sectors; 4750 parm[2] = cylinders; 4751 4752 return 0; 4753 } 4754 4755 /** 4756 * ipr_find_starget - Find target based on bus/target. 4757 * @starget: scsi target struct 4758 * 4759 * Return value: 4760 * resource entry pointer if found / NULL if not found 4761 **/ 4762 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget) 4763 { 4764 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4765 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4766 struct ipr_resource_entry *res; 4767 4768 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4769 if ((res->bus == starget->channel) && 4770 (res->target == starget->id)) { 4771 return res; 4772 } 4773 } 4774 4775 return NULL; 4776 } 4777 4778 static struct ata_port_info sata_port_info; 4779 4780 /** 4781 * ipr_target_alloc - Prepare for commands to a SCSI target 4782 * @starget: scsi target struct 4783 * 4784 * If the device is a SATA device, this function allocates an 4785 * ATA port with libata, else it does nothing. 4786 * 4787 * Return value: 4788 * 0 on success / non-0 on failure 4789 **/ 4790 static int ipr_target_alloc(struct scsi_target *starget) 4791 { 4792 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4793 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4794 struct ipr_sata_port *sata_port; 4795 struct ata_port *ap; 4796 struct ipr_resource_entry *res; 4797 unsigned long lock_flags; 4798 4799 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4800 res = ipr_find_starget(starget); 4801 starget->hostdata = NULL; 4802 4803 if (res && ipr_is_gata(res)) { 4804 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4805 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL); 4806 if (!sata_port) 4807 return -ENOMEM; 4808 4809 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost); 4810 if (ap) { 4811 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4812 sata_port->ioa_cfg = ioa_cfg; 4813 sata_port->ap = ap; 4814 sata_port->res = res; 4815 4816 res->sata_port = sata_port; 4817 ap->private_data = sata_port; 4818 starget->hostdata = sata_port; 4819 } else { 4820 kfree(sata_port); 4821 return -ENOMEM; 4822 } 4823 } 4824 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4825 4826 return 0; 4827 } 4828 4829 /** 4830 * ipr_target_destroy - Destroy a SCSI target 4831 * @starget: scsi target struct 4832 * 4833 * If the device was a SATA device, this function frees the libata 4834 * ATA port, else it does nothing. 4835 * 4836 **/ 4837 static void ipr_target_destroy(struct scsi_target *starget) 4838 { 4839 struct ipr_sata_port *sata_port = starget->hostdata; 4840 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4841 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4842 4843 if (ioa_cfg->sis64) { 4844 if (!ipr_find_starget(starget)) { 4845 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS) 4846 clear_bit(starget->id, ioa_cfg->array_ids); 4847 else if (starget->channel == IPR_VSET_VIRTUAL_BUS) 4848 clear_bit(starget->id, ioa_cfg->vset_ids); 4849 else if (starget->channel == 0) 4850 clear_bit(starget->id, ioa_cfg->target_ids); 4851 } 4852 } 4853 4854 if (sata_port) { 4855 starget->hostdata = NULL; 4856 ata_sas_port_destroy(sata_port->ap); 4857 kfree(sata_port); 4858 } 4859 } 4860 4861 /** 4862 * ipr_find_sdev - Find device based on bus/target/lun. 4863 * @sdev: scsi device struct 4864 * 4865 * Return value: 4866 * resource entry pointer if found / NULL if not found 4867 **/ 4868 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev) 4869 { 4870 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4871 struct ipr_resource_entry *res; 4872 4873 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4874 if ((res->bus == sdev->channel) && 4875 (res->target == sdev->id) && 4876 (res->lun == sdev->lun)) 4877 return res; 4878 } 4879 4880 return NULL; 4881 } 4882 4883 /** 4884 * ipr_slave_destroy - Unconfigure a SCSI device 4885 * @sdev: scsi device struct 4886 * 4887 * Return value: 4888 * nothing 4889 **/ 4890 static void ipr_slave_destroy(struct scsi_device *sdev) 4891 { 4892 struct ipr_resource_entry *res; 4893 struct ipr_ioa_cfg *ioa_cfg; 4894 unsigned long lock_flags = 0; 4895 4896 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4897 4898 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4899 res = (struct ipr_resource_entry *) sdev->hostdata; 4900 if (res) { 4901 if (res->sata_port) 4902 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE; 4903 sdev->hostdata = NULL; 4904 res->sdev = NULL; 4905 res->sata_port = NULL; 4906 } 4907 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4908 } 4909 4910 /** 4911 * ipr_slave_configure - Configure a SCSI device 4912 * @sdev: scsi device struct 4913 * 4914 * This function configures the specified scsi device. 4915 * 4916 * Return value: 4917 * 0 on success 4918 **/ 4919 static int ipr_slave_configure(struct scsi_device *sdev) 4920 { 4921 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4922 struct ipr_resource_entry *res; 4923 struct ata_port *ap = NULL; 4924 unsigned long lock_flags = 0; 4925 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4926 4927 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4928 res = sdev->hostdata; 4929 if (res) { 4930 if (ipr_is_af_dasd_device(res)) 4931 sdev->type = TYPE_RAID; 4932 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { 4933 sdev->scsi_level = 4; 4934 sdev->no_uld_attach = 1; 4935 } 4936 if (ipr_is_vset_device(res)) { 4937 sdev->scsi_level = SCSI_SPC_3; 4938 blk_queue_rq_timeout(sdev->request_queue, 4939 IPR_VSET_RW_TIMEOUT); 4940 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); 4941 } 4942 if (ipr_is_gata(res) && res->sata_port) 4943 ap = res->sata_port->ap; 4944 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4945 4946 if (ap) { 4947 scsi_change_queue_depth(sdev, IPR_MAX_CMD_PER_ATA_LUN); 4948 ata_sas_slave_configure(sdev, ap); 4949 } 4950 4951 if (ioa_cfg->sis64) 4952 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n", 4953 ipr_format_res_path(ioa_cfg, 4954 res->res_path, buffer, sizeof(buffer))); 4955 return 0; 4956 } 4957 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4958 return 0; 4959 } 4960 4961 /** 4962 * ipr_ata_slave_alloc - Prepare for commands to a SATA device 4963 * @sdev: scsi device struct 4964 * 4965 * This function initializes an ATA port so that future commands 4966 * sent through queuecommand will work. 4967 * 4968 * Return value: 4969 * 0 on success 4970 **/ 4971 static int ipr_ata_slave_alloc(struct scsi_device *sdev) 4972 { 4973 struct ipr_sata_port *sata_port = NULL; 4974 int rc = -ENXIO; 4975 4976 ENTER; 4977 if (sdev->sdev_target) 4978 sata_port = sdev->sdev_target->hostdata; 4979 if (sata_port) { 4980 rc = ata_sas_port_init(sata_port->ap); 4981 if (rc == 0) 4982 rc = ata_sas_sync_probe(sata_port->ap); 4983 } 4984 4985 if (rc) 4986 ipr_slave_destroy(sdev); 4987 4988 LEAVE; 4989 return rc; 4990 } 4991 4992 /** 4993 * ipr_slave_alloc - Prepare for commands to a device. 4994 * @sdev: scsi device struct 4995 * 4996 * This function saves a pointer to the resource entry 4997 * in the scsi device struct if the device exists. We 4998 * can then use this pointer in ipr_queuecommand when 4999 * handling new commands. 5000 * 5001 * Return value: 5002 * 0 on success / -ENXIO if device does not exist 5003 **/ 5004 static int ipr_slave_alloc(struct scsi_device *sdev) 5005 { 5006 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 5007 struct ipr_resource_entry *res; 5008 unsigned long lock_flags; 5009 int rc = -ENXIO; 5010 5011 sdev->hostdata = NULL; 5012 5013 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5014 5015 res = ipr_find_sdev(sdev); 5016 if (res) { 5017 res->sdev = sdev; 5018 res->add_to_ml = 0; 5019 res->in_erp = 0; 5020 sdev->hostdata = res; 5021 if (!ipr_is_naca_model(res)) 5022 res->needs_sync_complete = 1; 5023 rc = 0; 5024 if (ipr_is_gata(res)) { 5025 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5026 return ipr_ata_slave_alloc(sdev); 5027 } 5028 } 5029 5030 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5031 5032 return rc; 5033 } 5034 5035 /** 5036 * ipr_match_lun - Match function for specified LUN 5037 * @ipr_cmd: ipr command struct 5038 * @device: device to match (sdev) 5039 * 5040 * Returns: 5041 * 1 if command matches sdev / 0 if command does not match sdev 5042 **/ 5043 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device) 5044 { 5045 if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device) 5046 return 1; 5047 return 0; 5048 } 5049 5050 /** 5051 * ipr_cmnd_is_free - Check if a command is free or not 5052 * @ipr_cmd ipr command struct 5053 * 5054 * Returns: 5055 * true / false 5056 **/ 5057 static bool ipr_cmnd_is_free(struct ipr_cmnd *ipr_cmd) 5058 { 5059 struct ipr_cmnd *loop_cmd; 5060 5061 list_for_each_entry(loop_cmd, &ipr_cmd->hrrq->hrrq_free_q, queue) { 5062 if (loop_cmd == ipr_cmd) 5063 return true; 5064 } 5065 5066 return false; 5067 } 5068 5069 /** 5070 * ipr_match_res - Match function for specified resource entry 5071 * @ipr_cmd: ipr command struct 5072 * @resource: resource entry to match 5073 * 5074 * Returns: 5075 * 1 if command matches sdev / 0 if command does not match sdev 5076 **/ 5077 static int ipr_match_res(struct ipr_cmnd *ipr_cmd, void *resource) 5078 { 5079 struct ipr_resource_entry *res = resource; 5080 5081 if (res && ipr_cmd->ioarcb.res_handle == res->res_handle) 5082 return 1; 5083 return 0; 5084 } 5085 5086 /** 5087 * ipr_wait_for_ops - Wait for matching commands to complete 5088 * @ipr_cmd: ipr command struct 5089 * @device: device to match (sdev) 5090 * @match: match function to use 5091 * 5092 * Returns: 5093 * SUCCESS / FAILED 5094 **/ 5095 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device, 5096 int (*match)(struct ipr_cmnd *, void *)) 5097 { 5098 struct ipr_cmnd *ipr_cmd; 5099 int wait, i; 5100 unsigned long flags; 5101 struct ipr_hrr_queue *hrrq; 5102 signed long timeout = IPR_ABORT_TASK_TIMEOUT; 5103 DECLARE_COMPLETION_ONSTACK(comp); 5104 5105 ENTER; 5106 do { 5107 wait = 0; 5108 5109 for_each_hrrq(hrrq, ioa_cfg) { 5110 spin_lock_irqsave(hrrq->lock, flags); 5111 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 5112 ipr_cmd = ioa_cfg->ipr_cmnd_list[i]; 5113 if (!ipr_cmnd_is_free(ipr_cmd)) { 5114 if (match(ipr_cmd, device)) { 5115 ipr_cmd->eh_comp = ∁ 5116 wait++; 5117 } 5118 } 5119 } 5120 spin_unlock_irqrestore(hrrq->lock, flags); 5121 } 5122 5123 if (wait) { 5124 timeout = wait_for_completion_timeout(&comp, timeout); 5125 5126 if (!timeout) { 5127 wait = 0; 5128 5129 for_each_hrrq(hrrq, ioa_cfg) { 5130 spin_lock_irqsave(hrrq->lock, flags); 5131 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 5132 ipr_cmd = ioa_cfg->ipr_cmnd_list[i]; 5133 if (!ipr_cmnd_is_free(ipr_cmd)) { 5134 if (match(ipr_cmd, device)) { 5135 ipr_cmd->eh_comp = NULL; 5136 wait++; 5137 } 5138 } 5139 } 5140 spin_unlock_irqrestore(hrrq->lock, flags); 5141 } 5142 5143 if (wait) 5144 dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n"); 5145 LEAVE; 5146 return wait ? FAILED : SUCCESS; 5147 } 5148 } 5149 } while (wait); 5150 5151 LEAVE; 5152 return SUCCESS; 5153 } 5154 5155 static int ipr_eh_host_reset(struct scsi_cmnd *cmd) 5156 { 5157 struct ipr_ioa_cfg *ioa_cfg; 5158 unsigned long lock_flags = 0; 5159 int rc = SUCCESS; 5160 5161 ENTER; 5162 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata; 5163 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5164 5165 if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) { 5166 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV); 5167 dev_err(&ioa_cfg->pdev->dev, 5168 "Adapter being reset as a result of error recovery.\n"); 5169 5170 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 5171 ioa_cfg->sdt_state = GET_DUMP; 5172 } 5173 5174 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5175 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5176 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5177 5178 /* If we got hit with a host reset while we were already resetting 5179 the adapter for some reason, and the reset failed. */ 5180 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) { 5181 ipr_trace; 5182 rc = FAILED; 5183 } 5184 5185 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5186 LEAVE; 5187 return rc; 5188 } 5189 5190 /** 5191 * ipr_device_reset - Reset the device 5192 * @ioa_cfg: ioa config struct 5193 * @res: resource entry struct 5194 * 5195 * This function issues a device reset to the affected device. 5196 * If the device is a SCSI device, a LUN reset will be sent 5197 * to the device first. If that does not work, a target reset 5198 * will be sent. If the device is a SATA device, a PHY reset will 5199 * be sent. 5200 * 5201 * Return value: 5202 * 0 on success / non-zero on failure 5203 **/ 5204 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, 5205 struct ipr_resource_entry *res) 5206 { 5207 struct ipr_cmnd *ipr_cmd; 5208 struct ipr_ioarcb *ioarcb; 5209 struct ipr_cmd_pkt *cmd_pkt; 5210 struct ipr_ioarcb_ata_regs *regs; 5211 u32 ioasc; 5212 5213 ENTER; 5214 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5215 ioarcb = &ipr_cmd->ioarcb; 5216 cmd_pkt = &ioarcb->cmd_pkt; 5217 5218 if (ipr_cmd->ioa_cfg->sis64) { 5219 regs = &ipr_cmd->i.ata_ioadl.regs; 5220 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb)); 5221 } else 5222 regs = &ioarcb->u.add_data.u.regs; 5223 5224 ioarcb->res_handle = res->res_handle; 5225 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5226 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 5227 if (ipr_is_gata(res)) { 5228 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET; 5229 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags)); 5230 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 5231 } 5232 5233 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 5234 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5235 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 5236 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) { 5237 if (ipr_cmd->ioa_cfg->sis64) 5238 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata, 5239 sizeof(struct ipr_ioasa_gata)); 5240 else 5241 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata, 5242 sizeof(struct ipr_ioasa_gata)); 5243 } 5244 5245 LEAVE; 5246 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0; 5247 } 5248 5249 /** 5250 * ipr_sata_reset - Reset the SATA port 5251 * @link: SATA link to reset 5252 * @classes: class of the attached device 5253 * 5254 * This function issues a SATA phy reset to the affected ATA link. 5255 * 5256 * Return value: 5257 * 0 on success / non-zero on failure 5258 **/ 5259 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes, 5260 unsigned long deadline) 5261 { 5262 struct ipr_sata_port *sata_port = link->ap->private_data; 5263 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5264 struct ipr_resource_entry *res; 5265 unsigned long lock_flags = 0; 5266 int rc = -ENXIO, ret; 5267 5268 ENTER; 5269 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5270 while (ioa_cfg->in_reset_reload) { 5271 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5272 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5273 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5274 } 5275 5276 res = sata_port->res; 5277 if (res) { 5278 rc = ipr_device_reset(ioa_cfg, res); 5279 *classes = res->ata_class; 5280 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5281 5282 ret = ipr_wait_for_ops(ioa_cfg, res, ipr_match_res); 5283 if (ret != SUCCESS) { 5284 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5285 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV); 5286 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5287 5288 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5289 } 5290 } else 5291 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5292 5293 LEAVE; 5294 return rc; 5295 } 5296 5297 /** 5298 * ipr_eh_dev_reset - Reset the device 5299 * @scsi_cmd: scsi command struct 5300 * 5301 * This function issues a device reset to the affected device. 5302 * A LUN reset will be sent to the device first. If that does 5303 * not work, a target reset will be sent. 5304 * 5305 * Return value: 5306 * SUCCESS / FAILED 5307 **/ 5308 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd) 5309 { 5310 struct ipr_cmnd *ipr_cmd; 5311 struct ipr_ioa_cfg *ioa_cfg; 5312 struct ipr_resource_entry *res; 5313 struct ata_port *ap; 5314 int rc = 0, i; 5315 struct ipr_hrr_queue *hrrq; 5316 5317 ENTER; 5318 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 5319 res = scsi_cmd->device->hostdata; 5320 5321 /* 5322 * If we are currently going through reset/reload, return failed. This will force the 5323 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 5324 * reset to complete 5325 */ 5326 if (ioa_cfg->in_reset_reload) 5327 return FAILED; 5328 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 5329 return FAILED; 5330 5331 for_each_hrrq(hrrq, ioa_cfg) { 5332 spin_lock(&hrrq->_lock); 5333 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 5334 ipr_cmd = ioa_cfg->ipr_cmnd_list[i]; 5335 5336 if (ipr_cmd->ioarcb.res_handle == res->res_handle) { 5337 if (!ipr_cmd->qc) 5338 continue; 5339 if (ipr_cmnd_is_free(ipr_cmd)) 5340 continue; 5341 5342 ipr_cmd->done = ipr_sata_eh_done; 5343 if (!(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) { 5344 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT; 5345 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED; 5346 } 5347 } 5348 } 5349 spin_unlock(&hrrq->_lock); 5350 } 5351 res->resetting_device = 1; 5352 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); 5353 5354 if (ipr_is_gata(res) && res->sata_port) { 5355 ap = res->sata_port->ap; 5356 spin_unlock_irq(scsi_cmd->device->host->host_lock); 5357 ata_std_error_handler(ap); 5358 spin_lock_irq(scsi_cmd->device->host->host_lock); 5359 } else 5360 rc = ipr_device_reset(ioa_cfg, res); 5361 res->resetting_device = 0; 5362 res->reset_occurred = 1; 5363 5364 LEAVE; 5365 return rc ? FAILED : SUCCESS; 5366 } 5367 5368 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd) 5369 { 5370 int rc; 5371 struct ipr_ioa_cfg *ioa_cfg; 5372 struct ipr_resource_entry *res; 5373 5374 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata; 5375 res = cmd->device->hostdata; 5376 5377 if (!res) 5378 return FAILED; 5379 5380 spin_lock_irq(cmd->device->host->host_lock); 5381 rc = __ipr_eh_dev_reset(cmd); 5382 spin_unlock_irq(cmd->device->host->host_lock); 5383 5384 if (rc == SUCCESS) { 5385 if (ipr_is_gata(res) && res->sata_port) 5386 rc = ipr_wait_for_ops(ioa_cfg, res, ipr_match_res); 5387 else 5388 rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun); 5389 } 5390 5391 return rc; 5392 } 5393 5394 /** 5395 * ipr_bus_reset_done - Op done function for bus reset. 5396 * @ipr_cmd: ipr command struct 5397 * 5398 * This function is the op done function for a bus reset 5399 * 5400 * Return value: 5401 * none 5402 **/ 5403 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 5404 { 5405 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5406 struct ipr_resource_entry *res; 5407 5408 ENTER; 5409 if (!ioa_cfg->sis64) 5410 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 5411 if (res->res_handle == ipr_cmd->ioarcb.res_handle) { 5412 scsi_report_bus_reset(ioa_cfg->host, res->bus); 5413 break; 5414 } 5415 } 5416 5417 /* 5418 * If abort has not completed, indicate the reset has, else call the 5419 * abort's done function to wake the sleeping eh thread 5420 */ 5421 if (ipr_cmd->sibling->sibling) 5422 ipr_cmd->sibling->sibling = NULL; 5423 else 5424 ipr_cmd->sibling->done(ipr_cmd->sibling); 5425 5426 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 5427 LEAVE; 5428 } 5429 5430 /** 5431 * ipr_abort_timeout - An abort task has timed out 5432 * @ipr_cmd: ipr command struct 5433 * 5434 * This function handles when an abort task times out. If this 5435 * happens we issue a bus reset since we have resources tied 5436 * up that must be freed before returning to the midlayer. 5437 * 5438 * Return value: 5439 * none 5440 **/ 5441 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 5442 { 5443 struct ipr_cmnd *reset_cmd; 5444 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5445 struct ipr_cmd_pkt *cmd_pkt; 5446 unsigned long lock_flags = 0; 5447 5448 ENTER; 5449 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5450 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 5451 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5452 return; 5453 } 5454 5455 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n"); 5456 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5457 ipr_cmd->sibling = reset_cmd; 5458 reset_cmd->sibling = ipr_cmd; 5459 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 5460 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 5461 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5462 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 5463 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 5464 5465 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 5466 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5467 LEAVE; 5468 } 5469 5470 /** 5471 * ipr_cancel_op - Cancel specified op 5472 * @scsi_cmd: scsi command struct 5473 * 5474 * This function cancels specified op. 5475 * 5476 * Return value: 5477 * SUCCESS / FAILED 5478 **/ 5479 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd) 5480 { 5481 struct ipr_cmnd *ipr_cmd; 5482 struct ipr_ioa_cfg *ioa_cfg; 5483 struct ipr_resource_entry *res; 5484 struct ipr_cmd_pkt *cmd_pkt; 5485 u32 ioasc, int_reg; 5486 int i, op_found = 0; 5487 struct ipr_hrr_queue *hrrq; 5488 5489 ENTER; 5490 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 5491 res = scsi_cmd->device->hostdata; 5492 5493 /* If we are currently going through reset/reload, return failed. 5494 * This will force the mid-layer to call ipr_eh_host_reset, 5495 * which will then go to sleep and wait for the reset to complete 5496 */ 5497 if (ioa_cfg->in_reset_reload || 5498 ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 5499 return FAILED; 5500 if (!res) 5501 return FAILED; 5502 5503 /* 5504 * If we are aborting a timed out op, chances are that the timeout was caused 5505 * by a still not detected EEH error. In such cases, reading a register will 5506 * trigger the EEH recovery infrastructure. 5507 */ 5508 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 5509 5510 if (!ipr_is_gscsi(res)) 5511 return FAILED; 5512 5513 for_each_hrrq(hrrq, ioa_cfg) { 5514 spin_lock(&hrrq->_lock); 5515 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 5516 if (ioa_cfg->ipr_cmnd_list[i]->scsi_cmd == scsi_cmd) { 5517 if (!ipr_cmnd_is_free(ioa_cfg->ipr_cmnd_list[i])) { 5518 op_found = 1; 5519 break; 5520 } 5521 } 5522 } 5523 spin_unlock(&hrrq->_lock); 5524 } 5525 5526 if (!op_found) 5527 return SUCCESS; 5528 5529 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5530 ipr_cmd->ioarcb.res_handle = res->res_handle; 5531 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 5532 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5533 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 5534 ipr_cmd->u.sdev = scsi_cmd->device; 5535 5536 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n", 5537 scsi_cmd->cmnd[0]); 5538 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 5539 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5540 5541 /* 5542 * If the abort task timed out and we sent a bus reset, we will get 5543 * one the following responses to the abort 5544 */ 5545 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 5546 ioasc = 0; 5547 ipr_trace; 5548 } 5549 5550 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 5551 if (!ipr_is_naca_model(res)) 5552 res->needs_sync_complete = 1; 5553 5554 LEAVE; 5555 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS; 5556 } 5557 5558 /** 5559 * ipr_eh_abort - Abort a single op 5560 * @scsi_cmd: scsi command struct 5561 * 5562 * Return value: 5563 * 0 if scan in progress / 1 if scan is complete 5564 **/ 5565 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time) 5566 { 5567 unsigned long lock_flags; 5568 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 5569 int rc = 0; 5570 5571 spin_lock_irqsave(shost->host_lock, lock_flags); 5572 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done) 5573 rc = 1; 5574 if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2)) 5575 rc = 1; 5576 spin_unlock_irqrestore(shost->host_lock, lock_flags); 5577 return rc; 5578 } 5579 5580 /** 5581 * ipr_eh_host_reset - Reset the host adapter 5582 * @scsi_cmd: scsi command struct 5583 * 5584 * Return value: 5585 * SUCCESS / FAILED 5586 **/ 5587 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd) 5588 { 5589 unsigned long flags; 5590 int rc; 5591 struct ipr_ioa_cfg *ioa_cfg; 5592 5593 ENTER; 5594 5595 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 5596 5597 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 5598 rc = ipr_cancel_op(scsi_cmd); 5599 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 5600 5601 if (rc == SUCCESS) 5602 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun); 5603 LEAVE; 5604 return rc; 5605 } 5606 5607 /** 5608 * ipr_handle_other_interrupt - Handle "other" interrupts 5609 * @ioa_cfg: ioa config struct 5610 * @int_reg: interrupt register 5611 * 5612 * Return value: 5613 * IRQ_NONE / IRQ_HANDLED 5614 **/ 5615 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 5616 u32 int_reg) 5617 { 5618 irqreturn_t rc = IRQ_HANDLED; 5619 u32 int_mask_reg; 5620 5621 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 5622 int_reg &= ~int_mask_reg; 5623 5624 /* If an interrupt on the adapter did not occur, ignore it. 5625 * Or in the case of SIS 64, check for a stage change interrupt. 5626 */ 5627 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) { 5628 if (ioa_cfg->sis64) { 5629 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 5630 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 5631 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) { 5632 5633 /* clear stage change */ 5634 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg); 5635 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 5636 list_del(&ioa_cfg->reset_cmd->queue); 5637 del_timer(&ioa_cfg->reset_cmd->timer); 5638 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 5639 return IRQ_HANDLED; 5640 } 5641 } 5642 5643 return IRQ_NONE; 5644 } 5645 5646 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 5647 /* Mask the interrupt */ 5648 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 5649 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 5650 5651 list_del(&ioa_cfg->reset_cmd->queue); 5652 del_timer(&ioa_cfg->reset_cmd->timer); 5653 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 5654 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) { 5655 if (ioa_cfg->clear_isr) { 5656 if (ipr_debug && printk_ratelimit()) 5657 dev_err(&ioa_cfg->pdev->dev, 5658 "Spurious interrupt detected. 0x%08X\n", int_reg); 5659 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32); 5660 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5661 return IRQ_NONE; 5662 } 5663 } else { 5664 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 5665 ioa_cfg->ioa_unit_checked = 1; 5666 else if (int_reg & IPR_PCII_NO_HOST_RRQ) 5667 dev_err(&ioa_cfg->pdev->dev, 5668 "No Host RRQ. 0x%08X\n", int_reg); 5669 else 5670 dev_err(&ioa_cfg->pdev->dev, 5671 "Permanent IOA failure. 0x%08X\n", int_reg); 5672 5673 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 5674 ioa_cfg->sdt_state = GET_DUMP; 5675 5676 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 5677 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5678 } 5679 5680 return rc; 5681 } 5682 5683 /** 5684 * ipr_isr_eh - Interrupt service routine error handler 5685 * @ioa_cfg: ioa config struct 5686 * @msg: message to log 5687 * 5688 * Return value: 5689 * none 5690 **/ 5691 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number) 5692 { 5693 ioa_cfg->errors_logged++; 5694 dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number); 5695 5696 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 5697 ioa_cfg->sdt_state = GET_DUMP; 5698 5699 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5700 } 5701 5702 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget, 5703 struct list_head *doneq) 5704 { 5705 u32 ioasc; 5706 u16 cmd_index; 5707 struct ipr_cmnd *ipr_cmd; 5708 struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg; 5709 int num_hrrq = 0; 5710 5711 /* If interrupts are disabled, ignore the interrupt */ 5712 if (!hrr_queue->allow_interrupts) 5713 return 0; 5714 5715 while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5716 hrr_queue->toggle_bit) { 5717 5718 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) & 5719 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> 5720 IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 5721 5722 if (unlikely(cmd_index > hrr_queue->max_cmd_id || 5723 cmd_index < hrr_queue->min_cmd_id)) { 5724 ipr_isr_eh(ioa_cfg, 5725 "Invalid response handle from IOA: ", 5726 cmd_index); 5727 break; 5728 } 5729 5730 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 5731 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5732 5733 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 5734 5735 list_move_tail(&ipr_cmd->queue, doneq); 5736 5737 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) { 5738 hrr_queue->hrrq_curr++; 5739 } else { 5740 hrr_queue->hrrq_curr = hrr_queue->hrrq_start; 5741 hrr_queue->toggle_bit ^= 1u; 5742 } 5743 num_hrrq++; 5744 if (budget > 0 && num_hrrq >= budget) 5745 break; 5746 } 5747 5748 return num_hrrq; 5749 } 5750 5751 static int ipr_iopoll(struct irq_poll *iop, int budget) 5752 { 5753 struct ipr_ioa_cfg *ioa_cfg; 5754 struct ipr_hrr_queue *hrrq; 5755 struct ipr_cmnd *ipr_cmd, *temp; 5756 unsigned long hrrq_flags; 5757 int completed_ops; 5758 LIST_HEAD(doneq); 5759 5760 hrrq = container_of(iop, struct ipr_hrr_queue, iopoll); 5761 ioa_cfg = hrrq->ioa_cfg; 5762 5763 spin_lock_irqsave(hrrq->lock, hrrq_flags); 5764 completed_ops = ipr_process_hrrq(hrrq, budget, &doneq); 5765 5766 if (completed_ops < budget) 5767 irq_poll_complete(iop); 5768 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5769 5770 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) { 5771 list_del(&ipr_cmd->queue); 5772 del_timer(&ipr_cmd->timer); 5773 ipr_cmd->fast_done(ipr_cmd); 5774 } 5775 5776 return completed_ops; 5777 } 5778 5779 /** 5780 * ipr_isr - Interrupt service routine 5781 * @irq: irq number 5782 * @devp: pointer to ioa config struct 5783 * 5784 * Return value: 5785 * IRQ_NONE / IRQ_HANDLED 5786 **/ 5787 static irqreturn_t ipr_isr(int irq, void *devp) 5788 { 5789 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp; 5790 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg; 5791 unsigned long hrrq_flags = 0; 5792 u32 int_reg = 0; 5793 int num_hrrq = 0; 5794 int irq_none = 0; 5795 struct ipr_cmnd *ipr_cmd, *temp; 5796 irqreturn_t rc = IRQ_NONE; 5797 LIST_HEAD(doneq); 5798 5799 spin_lock_irqsave(hrrq->lock, hrrq_flags); 5800 /* If interrupts are disabled, ignore the interrupt */ 5801 if (!hrrq->allow_interrupts) { 5802 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5803 return IRQ_NONE; 5804 } 5805 5806 while (1) { 5807 if (ipr_process_hrrq(hrrq, -1, &doneq)) { 5808 rc = IRQ_HANDLED; 5809 5810 if (!ioa_cfg->clear_isr) 5811 break; 5812 5813 /* Clear the PCI interrupt */ 5814 num_hrrq = 0; 5815 do { 5816 writel(IPR_PCII_HRRQ_UPDATED, 5817 ioa_cfg->regs.clr_interrupt_reg32); 5818 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5819 } while (int_reg & IPR_PCII_HRRQ_UPDATED && 5820 num_hrrq++ < IPR_MAX_HRRQ_RETRIES); 5821 5822 } else if (rc == IRQ_NONE && irq_none == 0) { 5823 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5824 irq_none++; 5825 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES && 5826 int_reg & IPR_PCII_HRRQ_UPDATED) { 5827 ipr_isr_eh(ioa_cfg, 5828 "Error clearing HRRQ: ", num_hrrq); 5829 rc = IRQ_HANDLED; 5830 break; 5831 } else 5832 break; 5833 } 5834 5835 if (unlikely(rc == IRQ_NONE)) 5836 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 5837 5838 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5839 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) { 5840 list_del(&ipr_cmd->queue); 5841 del_timer(&ipr_cmd->timer); 5842 ipr_cmd->fast_done(ipr_cmd); 5843 } 5844 return rc; 5845 } 5846 5847 /** 5848 * ipr_isr_mhrrq - Interrupt service routine 5849 * @irq: irq number 5850 * @devp: pointer to ioa config struct 5851 * 5852 * Return value: 5853 * IRQ_NONE / IRQ_HANDLED 5854 **/ 5855 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp) 5856 { 5857 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp; 5858 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg; 5859 unsigned long hrrq_flags = 0; 5860 struct ipr_cmnd *ipr_cmd, *temp; 5861 irqreturn_t rc = IRQ_NONE; 5862 LIST_HEAD(doneq); 5863 5864 spin_lock_irqsave(hrrq->lock, hrrq_flags); 5865 5866 /* If interrupts are disabled, ignore the interrupt */ 5867 if (!hrrq->allow_interrupts) { 5868 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5869 return IRQ_NONE; 5870 } 5871 5872 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 5873 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5874 hrrq->toggle_bit) { 5875 irq_poll_sched(&hrrq->iopoll); 5876 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5877 return IRQ_HANDLED; 5878 } 5879 } else { 5880 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5881 hrrq->toggle_bit) 5882 5883 if (ipr_process_hrrq(hrrq, -1, &doneq)) 5884 rc = IRQ_HANDLED; 5885 } 5886 5887 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5888 5889 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) { 5890 list_del(&ipr_cmd->queue); 5891 del_timer(&ipr_cmd->timer); 5892 ipr_cmd->fast_done(ipr_cmd); 5893 } 5894 return rc; 5895 } 5896 5897 /** 5898 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer 5899 * @ioa_cfg: ioa config struct 5900 * @ipr_cmd: ipr command struct 5901 * 5902 * Return value: 5903 * 0 on success / -1 on failure 5904 **/ 5905 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg, 5906 struct ipr_cmnd *ipr_cmd) 5907 { 5908 int i, nseg; 5909 struct scatterlist *sg; 5910 u32 length; 5911 u32 ioadl_flags = 0; 5912 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5913 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5914 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 5915 5916 length = scsi_bufflen(scsi_cmd); 5917 if (!length) 5918 return 0; 5919 5920 nseg = scsi_dma_map(scsi_cmd); 5921 if (nseg < 0) { 5922 if (printk_ratelimit()) 5923 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n"); 5924 return -1; 5925 } 5926 5927 ipr_cmd->dma_use_sg = nseg; 5928 5929 ioarcb->data_transfer_length = cpu_to_be32(length); 5930 ioarcb->ioadl_len = 5931 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 5932 5933 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 5934 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5935 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5936 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) 5937 ioadl_flags = IPR_IOADL_FLAGS_READ; 5938 5939 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 5940 ioadl64[i].flags = cpu_to_be32(ioadl_flags); 5941 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg)); 5942 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg)); 5943 } 5944 5945 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5946 return 0; 5947 } 5948 5949 /** 5950 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 5951 * @ioa_cfg: ioa config struct 5952 * @ipr_cmd: ipr command struct 5953 * 5954 * Return value: 5955 * 0 on success / -1 on failure 5956 **/ 5957 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 5958 struct ipr_cmnd *ipr_cmd) 5959 { 5960 int i, nseg; 5961 struct scatterlist *sg; 5962 u32 length; 5963 u32 ioadl_flags = 0; 5964 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5965 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5966 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 5967 5968 length = scsi_bufflen(scsi_cmd); 5969 if (!length) 5970 return 0; 5971 5972 nseg = scsi_dma_map(scsi_cmd); 5973 if (nseg < 0) { 5974 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n"); 5975 return -1; 5976 } 5977 5978 ipr_cmd->dma_use_sg = nseg; 5979 5980 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 5981 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5982 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5983 ioarcb->data_transfer_length = cpu_to_be32(length); 5984 ioarcb->ioadl_len = 5985 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5986 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 5987 ioadl_flags = IPR_IOADL_FLAGS_READ; 5988 ioarcb->read_data_transfer_length = cpu_to_be32(length); 5989 ioarcb->read_ioadl_len = 5990 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5991 } 5992 5993 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) { 5994 ioadl = ioarcb->u.add_data.u.ioadl; 5995 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) + 5996 offsetof(struct ipr_ioarcb, u.add_data)); 5997 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 5998 } 5999 6000 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 6001 ioadl[i].flags_and_data_len = 6002 cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 6003 ioadl[i].address = cpu_to_be32(sg_dma_address(sg)); 6004 } 6005 6006 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 6007 return 0; 6008 } 6009 6010 /** 6011 * __ipr_erp_done - Process completion of ERP for a device 6012 * @ipr_cmd: ipr command struct 6013 * 6014 * This function copies the sense buffer into the scsi_cmd 6015 * struct and pushes the scsi_done function. 6016 * 6017 * Return value: 6018 * nothing 6019 **/ 6020 static void __ipr_erp_done(struct ipr_cmnd *ipr_cmd) 6021 { 6022 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6023 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 6024 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6025 6026 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 6027 scsi_cmd->result |= (DID_ERROR << 16); 6028 scmd_printk(KERN_ERR, scsi_cmd, 6029 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 6030 } else { 6031 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 6032 SCSI_SENSE_BUFFERSIZE); 6033 } 6034 6035 if (res) { 6036 if (!ipr_is_naca_model(res)) 6037 res->needs_sync_complete = 1; 6038 res->in_erp = 0; 6039 } 6040 scsi_dma_unmap(ipr_cmd->scsi_cmd); 6041 scsi_cmd->scsi_done(scsi_cmd); 6042 if (ipr_cmd->eh_comp) 6043 complete(ipr_cmd->eh_comp); 6044 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6045 } 6046 6047 /** 6048 * ipr_erp_done - Process completion of ERP for a device 6049 * @ipr_cmd: ipr command struct 6050 * 6051 * This function copies the sense buffer into the scsi_cmd 6052 * struct and pushes the scsi_done function. 6053 * 6054 * Return value: 6055 * nothing 6056 **/ 6057 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 6058 { 6059 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq; 6060 unsigned long hrrq_flags; 6061 6062 spin_lock_irqsave(&hrrq->_lock, hrrq_flags); 6063 __ipr_erp_done(ipr_cmd); 6064 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags); 6065 } 6066 6067 /** 6068 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 6069 * @ipr_cmd: ipr command struct 6070 * 6071 * Return value: 6072 * none 6073 **/ 6074 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 6075 { 6076 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6077 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 6078 dma_addr_t dma_addr = ipr_cmd->dma_addr; 6079 6080 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 6081 ioarcb->data_transfer_length = 0; 6082 ioarcb->read_data_transfer_length = 0; 6083 ioarcb->ioadl_len = 0; 6084 ioarcb->read_ioadl_len = 0; 6085 ioasa->hdr.ioasc = 0; 6086 ioasa->hdr.residual_data_len = 0; 6087 6088 if (ipr_cmd->ioa_cfg->sis64) 6089 ioarcb->u.sis64_addr_data.data_ioadl_addr = 6090 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 6091 else { 6092 ioarcb->write_ioadl_addr = 6093 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 6094 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 6095 } 6096 } 6097 6098 /** 6099 * __ipr_erp_request_sense - Send request sense to a device 6100 * @ipr_cmd: ipr command struct 6101 * 6102 * This function sends a request sense to a device as a result 6103 * of a check condition. 6104 * 6105 * Return value: 6106 * nothing 6107 **/ 6108 static void __ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 6109 { 6110 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 6111 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6112 6113 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 6114 __ipr_erp_done(ipr_cmd); 6115 return; 6116 } 6117 6118 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 6119 6120 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 6121 cmd_pkt->cdb[0] = REQUEST_SENSE; 6122 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 6123 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 6124 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6125 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 6126 6127 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma, 6128 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST); 6129 6130 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 6131 IPR_REQUEST_SENSE_TIMEOUT * 2); 6132 } 6133 6134 /** 6135 * ipr_erp_request_sense - Send request sense to a device 6136 * @ipr_cmd: ipr command struct 6137 * 6138 * This function sends a request sense to a device as a result 6139 * of a check condition. 6140 * 6141 * Return value: 6142 * nothing 6143 **/ 6144 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 6145 { 6146 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq; 6147 unsigned long hrrq_flags; 6148 6149 spin_lock_irqsave(&hrrq->_lock, hrrq_flags); 6150 __ipr_erp_request_sense(ipr_cmd); 6151 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags); 6152 } 6153 6154 /** 6155 * ipr_erp_cancel_all - Send cancel all to a device 6156 * @ipr_cmd: ipr command struct 6157 * 6158 * This function sends a cancel all to a device to clear the 6159 * queue. If we are running TCQ on the device, QERR is set to 1, 6160 * which means all outstanding ops have been dropped on the floor. 6161 * Cancel all will return them to us. 6162 * 6163 * Return value: 6164 * nothing 6165 **/ 6166 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 6167 { 6168 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6169 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 6170 struct ipr_cmd_pkt *cmd_pkt; 6171 6172 res->in_erp = 1; 6173 6174 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 6175 6176 if (!scsi_cmd->device->simple_tags) { 6177 __ipr_erp_request_sense(ipr_cmd); 6178 return; 6179 } 6180 6181 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 6182 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 6183 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 6184 6185 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 6186 IPR_CANCEL_ALL_TIMEOUT); 6187 } 6188 6189 /** 6190 * ipr_dump_ioasa - Dump contents of IOASA 6191 * @ioa_cfg: ioa config struct 6192 * @ipr_cmd: ipr command struct 6193 * @res: resource entry struct 6194 * 6195 * This function is invoked by the interrupt handler when ops 6196 * fail. It will log the IOASA if appropriate. Only called 6197 * for GPDD ops. 6198 * 6199 * Return value: 6200 * none 6201 **/ 6202 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 6203 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res) 6204 { 6205 int i; 6206 u16 data_len; 6207 u32 ioasc, fd_ioasc; 6208 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 6209 __be32 *ioasa_data = (__be32 *)ioasa; 6210 int error_index; 6211 6212 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK; 6213 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK; 6214 6215 if (0 == ioasc) 6216 return; 6217 6218 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 6219 return; 6220 6221 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc) 6222 error_index = ipr_get_error(fd_ioasc); 6223 else 6224 error_index = ipr_get_error(ioasc); 6225 6226 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 6227 /* Don't log an error if the IOA already logged one */ 6228 if (ioasa->hdr.ilid != 0) 6229 return; 6230 6231 if (!ipr_is_gscsi(res)) 6232 return; 6233 6234 if (ipr_error_table[error_index].log_ioasa == 0) 6235 return; 6236 } 6237 6238 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error); 6239 6240 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len); 6241 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len) 6242 data_len = sizeof(struct ipr_ioasa64); 6243 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len) 6244 data_len = sizeof(struct ipr_ioasa); 6245 6246 ipr_err("IOASA Dump:\n"); 6247 6248 for (i = 0; i < data_len / 4; i += 4) { 6249 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 6250 be32_to_cpu(ioasa_data[i]), 6251 be32_to_cpu(ioasa_data[i+1]), 6252 be32_to_cpu(ioasa_data[i+2]), 6253 be32_to_cpu(ioasa_data[i+3])); 6254 } 6255 } 6256 6257 /** 6258 * ipr_gen_sense - Generate SCSI sense data from an IOASA 6259 * @ioasa: IOASA 6260 * @sense_buf: sense data buffer 6261 * 6262 * Return value: 6263 * none 6264 **/ 6265 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 6266 { 6267 u32 failing_lba; 6268 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 6269 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 6270 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 6271 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc); 6272 6273 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 6274 6275 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 6276 return; 6277 6278 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 6279 6280 if (ipr_is_vset_device(res) && 6281 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 6282 ioasa->u.vset.failing_lba_hi != 0) { 6283 sense_buf[0] = 0x72; 6284 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 6285 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 6286 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 6287 6288 sense_buf[7] = 12; 6289 sense_buf[8] = 0; 6290 sense_buf[9] = 0x0A; 6291 sense_buf[10] = 0x80; 6292 6293 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 6294 6295 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 6296 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 6297 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 6298 sense_buf[15] = failing_lba & 0x000000ff; 6299 6300 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 6301 6302 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 6303 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 6304 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 6305 sense_buf[19] = failing_lba & 0x000000ff; 6306 } else { 6307 sense_buf[0] = 0x70; 6308 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 6309 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 6310 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 6311 6312 /* Illegal request */ 6313 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 6314 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 6315 sense_buf[7] = 10; /* additional length */ 6316 6317 /* IOARCB was in error */ 6318 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 6319 sense_buf[15] = 0xC0; 6320 else /* Parameter data was invalid */ 6321 sense_buf[15] = 0x80; 6322 6323 sense_buf[16] = 6324 ((IPR_FIELD_POINTER_MASK & 6325 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff; 6326 sense_buf[17] = 6327 (IPR_FIELD_POINTER_MASK & 6328 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff; 6329 } else { 6330 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 6331 if (ipr_is_vset_device(res)) 6332 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 6333 else 6334 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 6335 6336 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 6337 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 6338 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 6339 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 6340 sense_buf[6] = failing_lba & 0x000000ff; 6341 } 6342 6343 sense_buf[7] = 6; /* additional length */ 6344 } 6345 } 6346 } 6347 6348 /** 6349 * ipr_get_autosense - Copy autosense data to sense buffer 6350 * @ipr_cmd: ipr command struct 6351 * 6352 * This function copies the autosense buffer to the buffer 6353 * in the scsi_cmd, if there is autosense available. 6354 * 6355 * Return value: 6356 * 1 if autosense was available / 0 if not 6357 **/ 6358 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) 6359 { 6360 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 6361 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64; 6362 6363 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0) 6364 return 0; 6365 6366 if (ipr_cmd->ioa_cfg->sis64) 6367 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data, 6368 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len), 6369 SCSI_SENSE_BUFFERSIZE)); 6370 else 6371 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, 6372 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), 6373 SCSI_SENSE_BUFFERSIZE)); 6374 return 1; 6375 } 6376 6377 /** 6378 * ipr_erp_start - Process an error response for a SCSI op 6379 * @ioa_cfg: ioa config struct 6380 * @ipr_cmd: ipr command struct 6381 * 6382 * This function determines whether or not to initiate ERP 6383 * on the affected device. 6384 * 6385 * Return value: 6386 * nothing 6387 **/ 6388 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 6389 struct ipr_cmnd *ipr_cmd) 6390 { 6391 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6392 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 6393 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6394 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK; 6395 6396 if (!res) { 6397 __ipr_scsi_eh_done(ipr_cmd); 6398 return; 6399 } 6400 6401 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS) 6402 ipr_gen_sense(ipr_cmd); 6403 6404 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 6405 6406 switch (masked_ioasc) { 6407 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 6408 if (ipr_is_naca_model(res)) 6409 scsi_cmd->result |= (DID_ABORT << 16); 6410 else 6411 scsi_cmd->result |= (DID_IMM_RETRY << 16); 6412 break; 6413 case IPR_IOASC_IR_RESOURCE_HANDLE: 6414 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: 6415 scsi_cmd->result |= (DID_NO_CONNECT << 16); 6416 break; 6417 case IPR_IOASC_HW_SEL_TIMEOUT: 6418 scsi_cmd->result |= (DID_NO_CONNECT << 16); 6419 if (!ipr_is_naca_model(res)) 6420 res->needs_sync_complete = 1; 6421 break; 6422 case IPR_IOASC_SYNC_REQUIRED: 6423 if (!res->in_erp) 6424 res->needs_sync_complete = 1; 6425 scsi_cmd->result |= (DID_IMM_RETRY << 16); 6426 break; 6427 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 6428 case IPR_IOASA_IR_DUAL_IOA_DISABLED: 6429 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 6430 break; 6431 case IPR_IOASC_BUS_WAS_RESET: 6432 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 6433 /* 6434 * Report the bus reset and ask for a retry. The device 6435 * will give CC/UA the next command. 6436 */ 6437 if (!res->resetting_device) 6438 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 6439 scsi_cmd->result |= (DID_ERROR << 16); 6440 if (!ipr_is_naca_model(res)) 6441 res->needs_sync_complete = 1; 6442 break; 6443 case IPR_IOASC_HW_DEV_BUS_STATUS: 6444 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 6445 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 6446 if (!ipr_get_autosense(ipr_cmd)) { 6447 if (!ipr_is_naca_model(res)) { 6448 ipr_erp_cancel_all(ipr_cmd); 6449 return; 6450 } 6451 } 6452 } 6453 if (!ipr_is_naca_model(res)) 6454 res->needs_sync_complete = 1; 6455 break; 6456 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 6457 break; 6458 case IPR_IOASC_IR_NON_OPTIMIZED: 6459 if (res->raw_mode) { 6460 res->raw_mode = 0; 6461 scsi_cmd->result |= (DID_IMM_RETRY << 16); 6462 } else 6463 scsi_cmd->result |= (DID_ERROR << 16); 6464 break; 6465 default: 6466 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 6467 scsi_cmd->result |= (DID_ERROR << 16); 6468 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) 6469 res->needs_sync_complete = 1; 6470 break; 6471 } 6472 6473 scsi_dma_unmap(ipr_cmd->scsi_cmd); 6474 scsi_cmd->scsi_done(scsi_cmd); 6475 if (ipr_cmd->eh_comp) 6476 complete(ipr_cmd->eh_comp); 6477 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6478 } 6479 6480 /** 6481 * ipr_scsi_done - mid-layer done function 6482 * @ipr_cmd: ipr command struct 6483 * 6484 * This function is invoked by the interrupt handler for 6485 * ops generated by the SCSI mid-layer 6486 * 6487 * Return value: 6488 * none 6489 **/ 6490 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 6491 { 6492 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6493 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6494 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6495 unsigned long lock_flags; 6496 6497 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len)); 6498 6499 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 6500 scsi_dma_unmap(scsi_cmd); 6501 6502 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags); 6503 scsi_cmd->scsi_done(scsi_cmd); 6504 if (ipr_cmd->eh_comp) 6505 complete(ipr_cmd->eh_comp); 6506 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6507 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags); 6508 } else { 6509 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6510 spin_lock(&ipr_cmd->hrrq->_lock); 6511 ipr_erp_start(ioa_cfg, ipr_cmd); 6512 spin_unlock(&ipr_cmd->hrrq->_lock); 6513 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6514 } 6515 } 6516 6517 /** 6518 * ipr_queuecommand - Queue a mid-layer request 6519 * @shost: scsi host struct 6520 * @scsi_cmd: scsi command struct 6521 * 6522 * This function queues a request generated by the mid-layer. 6523 * 6524 * Return value: 6525 * 0 on success 6526 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 6527 * SCSI_MLQUEUE_HOST_BUSY if host is busy 6528 **/ 6529 static int ipr_queuecommand(struct Scsi_Host *shost, 6530 struct scsi_cmnd *scsi_cmd) 6531 { 6532 struct ipr_ioa_cfg *ioa_cfg; 6533 struct ipr_resource_entry *res; 6534 struct ipr_ioarcb *ioarcb; 6535 struct ipr_cmnd *ipr_cmd; 6536 unsigned long hrrq_flags, lock_flags; 6537 int rc; 6538 struct ipr_hrr_queue *hrrq; 6539 int hrrq_id; 6540 6541 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 6542 6543 scsi_cmd->result = (DID_OK << 16); 6544 res = scsi_cmd->device->hostdata; 6545 6546 if (ipr_is_gata(res) && res->sata_port) { 6547 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6548 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap); 6549 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6550 return rc; 6551 } 6552 6553 hrrq_id = ipr_get_hrrq_index(ioa_cfg); 6554 hrrq = &ioa_cfg->hrrq[hrrq_id]; 6555 6556 spin_lock_irqsave(hrrq->lock, hrrq_flags); 6557 /* 6558 * We are currently blocking all devices due to a host reset 6559 * We have told the host to stop giving us new requests, but 6560 * ERP ops don't count. FIXME 6561 */ 6562 if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) { 6563 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6564 return SCSI_MLQUEUE_HOST_BUSY; 6565 } 6566 6567 /* 6568 * FIXME - Create scsi_set_host_offline interface 6569 * and the ioa_is_dead check can be removed 6570 */ 6571 if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) { 6572 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6573 goto err_nodev; 6574 } 6575 6576 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq); 6577 if (ipr_cmd == NULL) { 6578 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6579 return SCSI_MLQUEUE_HOST_BUSY; 6580 } 6581 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6582 6583 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done); 6584 ioarcb = &ipr_cmd->ioarcb; 6585 6586 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 6587 ipr_cmd->scsi_cmd = scsi_cmd; 6588 ipr_cmd->done = ipr_scsi_eh_done; 6589 6590 if (ipr_is_gscsi(res)) { 6591 if (scsi_cmd->underflow == 0) 6592 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6593 6594 if (res->reset_occurred) { 6595 res->reset_occurred = 0; 6596 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 6597 } 6598 } 6599 6600 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 6601 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 6602 6603 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 6604 if (scsi_cmd->flags & SCMD_TAGGED) 6605 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK; 6606 else 6607 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK; 6608 } 6609 6610 if (scsi_cmd->cmnd[0] >= 0xC0 && 6611 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) { 6612 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6613 } 6614 if (res->raw_mode && ipr_is_af_dasd_device(res)) { 6615 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE; 6616 6617 if (scsi_cmd->underflow == 0) 6618 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6619 } 6620 6621 if (ioa_cfg->sis64) 6622 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd); 6623 else 6624 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 6625 6626 spin_lock_irqsave(hrrq->lock, hrrq_flags); 6627 if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) { 6628 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q); 6629 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6630 if (!rc) 6631 scsi_dma_unmap(scsi_cmd); 6632 return SCSI_MLQUEUE_HOST_BUSY; 6633 } 6634 6635 if (unlikely(hrrq->ioa_is_dead)) { 6636 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q); 6637 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6638 scsi_dma_unmap(scsi_cmd); 6639 goto err_nodev; 6640 } 6641 6642 ioarcb->res_handle = res->res_handle; 6643 if (res->needs_sync_complete) { 6644 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 6645 res->needs_sync_complete = 0; 6646 } 6647 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q); 6648 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res)); 6649 ipr_send_command(ipr_cmd); 6650 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6651 return 0; 6652 6653 err_nodev: 6654 spin_lock_irqsave(hrrq->lock, hrrq_flags); 6655 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 6656 scsi_cmd->result = (DID_NO_CONNECT << 16); 6657 scsi_cmd->scsi_done(scsi_cmd); 6658 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6659 return 0; 6660 } 6661 6662 /** 6663 * ipr_ioctl - IOCTL handler 6664 * @sdev: scsi device struct 6665 * @cmd: IOCTL cmd 6666 * @arg: IOCTL arg 6667 * 6668 * Return value: 6669 * 0 on success / other on failure 6670 **/ 6671 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) 6672 { 6673 struct ipr_resource_entry *res; 6674 6675 res = (struct ipr_resource_entry *)sdev->hostdata; 6676 if (res && ipr_is_gata(res)) { 6677 if (cmd == HDIO_GET_IDENTITY) 6678 return -ENOTTY; 6679 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg); 6680 } 6681 6682 return -EINVAL; 6683 } 6684 6685 /** 6686 * ipr_info - Get information about the card/driver 6687 * @scsi_host: scsi host struct 6688 * 6689 * Return value: 6690 * pointer to buffer with description string 6691 **/ 6692 static const char *ipr_ioa_info(struct Scsi_Host *host) 6693 { 6694 static char buffer[512]; 6695 struct ipr_ioa_cfg *ioa_cfg; 6696 unsigned long lock_flags = 0; 6697 6698 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 6699 6700 spin_lock_irqsave(host->host_lock, lock_flags); 6701 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 6702 spin_unlock_irqrestore(host->host_lock, lock_flags); 6703 6704 return buffer; 6705 } 6706 6707 static struct scsi_host_template driver_template = { 6708 .module = THIS_MODULE, 6709 .name = "IPR", 6710 .info = ipr_ioa_info, 6711 .ioctl = ipr_ioctl, 6712 .queuecommand = ipr_queuecommand, 6713 .eh_abort_handler = ipr_eh_abort, 6714 .eh_device_reset_handler = ipr_eh_dev_reset, 6715 .eh_host_reset_handler = ipr_eh_host_reset, 6716 .slave_alloc = ipr_slave_alloc, 6717 .slave_configure = ipr_slave_configure, 6718 .slave_destroy = ipr_slave_destroy, 6719 .scan_finished = ipr_scan_finished, 6720 .target_alloc = ipr_target_alloc, 6721 .target_destroy = ipr_target_destroy, 6722 .change_queue_depth = ipr_change_queue_depth, 6723 .bios_param = ipr_biosparam, 6724 .can_queue = IPR_MAX_COMMANDS, 6725 .this_id = -1, 6726 .sg_tablesize = IPR_MAX_SGLIST, 6727 .max_sectors = IPR_IOA_MAX_SECTORS, 6728 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 6729 .use_clustering = ENABLE_CLUSTERING, 6730 .shost_attrs = ipr_ioa_attrs, 6731 .sdev_attrs = ipr_dev_attrs, 6732 .proc_name = IPR_NAME, 6733 }; 6734 6735 /** 6736 * ipr_ata_phy_reset - libata phy_reset handler 6737 * @ap: ata port to reset 6738 * 6739 **/ 6740 static void ipr_ata_phy_reset(struct ata_port *ap) 6741 { 6742 unsigned long flags; 6743 struct ipr_sata_port *sata_port = ap->private_data; 6744 struct ipr_resource_entry *res = sata_port->res; 6745 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 6746 int rc; 6747 6748 ENTER; 6749 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6750 while (ioa_cfg->in_reset_reload) { 6751 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6752 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6753 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6754 } 6755 6756 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) 6757 goto out_unlock; 6758 6759 rc = ipr_device_reset(ioa_cfg, res); 6760 6761 if (rc) { 6762 ap->link.device[0].class = ATA_DEV_NONE; 6763 goto out_unlock; 6764 } 6765 6766 ap->link.device[0].class = res->ata_class; 6767 if (ap->link.device[0].class == ATA_DEV_UNKNOWN) 6768 ap->link.device[0].class = ATA_DEV_NONE; 6769 6770 out_unlock: 6771 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6772 LEAVE; 6773 } 6774 6775 /** 6776 * ipr_ata_post_internal - Cleanup after an internal command 6777 * @qc: ATA queued command 6778 * 6779 * Return value: 6780 * none 6781 **/ 6782 static void ipr_ata_post_internal(struct ata_queued_cmd *qc) 6783 { 6784 struct ipr_sata_port *sata_port = qc->ap->private_data; 6785 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 6786 struct ipr_cmnd *ipr_cmd; 6787 struct ipr_hrr_queue *hrrq; 6788 unsigned long flags; 6789 6790 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6791 while (ioa_cfg->in_reset_reload) { 6792 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6793 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6794 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6795 } 6796 6797 for_each_hrrq(hrrq, ioa_cfg) { 6798 spin_lock(&hrrq->_lock); 6799 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) { 6800 if (ipr_cmd->qc == qc) { 6801 ipr_device_reset(ioa_cfg, sata_port->res); 6802 break; 6803 } 6804 } 6805 spin_unlock(&hrrq->_lock); 6806 } 6807 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6808 } 6809 6810 /** 6811 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure 6812 * @regs: destination 6813 * @tf: source ATA taskfile 6814 * 6815 * Return value: 6816 * none 6817 **/ 6818 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs, 6819 struct ata_taskfile *tf) 6820 { 6821 regs->feature = tf->feature; 6822 regs->nsect = tf->nsect; 6823 regs->lbal = tf->lbal; 6824 regs->lbam = tf->lbam; 6825 regs->lbah = tf->lbah; 6826 regs->device = tf->device; 6827 regs->command = tf->command; 6828 regs->hob_feature = tf->hob_feature; 6829 regs->hob_nsect = tf->hob_nsect; 6830 regs->hob_lbal = tf->hob_lbal; 6831 regs->hob_lbam = tf->hob_lbam; 6832 regs->hob_lbah = tf->hob_lbah; 6833 regs->ctl = tf->ctl; 6834 } 6835 6836 /** 6837 * ipr_sata_done - done function for SATA commands 6838 * @ipr_cmd: ipr command struct 6839 * 6840 * This function is invoked by the interrupt handler for 6841 * ops generated by the SCSI mid-layer to SATA devices 6842 * 6843 * Return value: 6844 * none 6845 **/ 6846 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd) 6847 { 6848 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6849 struct ata_queued_cmd *qc = ipr_cmd->qc; 6850 struct ipr_sata_port *sata_port = qc->ap->private_data; 6851 struct ipr_resource_entry *res = sata_port->res; 6852 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6853 6854 spin_lock(&ipr_cmd->hrrq->_lock); 6855 if (ipr_cmd->ioa_cfg->sis64) 6856 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata, 6857 sizeof(struct ipr_ioasa_gata)); 6858 else 6859 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata, 6860 sizeof(struct ipr_ioasa_gata)); 6861 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 6862 6863 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET) 6864 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target); 6865 6866 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 6867 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status); 6868 else 6869 qc->err_mask |= ac_err_mask(sata_port->ioasa.status); 6870 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6871 spin_unlock(&ipr_cmd->hrrq->_lock); 6872 ata_qc_complete(qc); 6873 } 6874 6875 /** 6876 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list 6877 * @ipr_cmd: ipr command struct 6878 * @qc: ATA queued command 6879 * 6880 **/ 6881 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd, 6882 struct ata_queued_cmd *qc) 6883 { 6884 u32 ioadl_flags = 0; 6885 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6886 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64; 6887 struct ipr_ioadl64_desc *last_ioadl64 = NULL; 6888 int len = qc->nbytes; 6889 struct scatterlist *sg; 6890 unsigned int si; 6891 dma_addr_t dma_addr = ipr_cmd->dma_addr; 6892 6893 if (len == 0) 6894 return; 6895 6896 if (qc->dma_dir == DMA_TO_DEVICE) { 6897 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 6898 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6899 } else if (qc->dma_dir == DMA_FROM_DEVICE) 6900 ioadl_flags = IPR_IOADL_FLAGS_READ; 6901 6902 ioarcb->data_transfer_length = cpu_to_be32(len); 6903 ioarcb->ioadl_len = 6904 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 6905 ioarcb->u.sis64_addr_data.data_ioadl_addr = 6906 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64)); 6907 6908 for_each_sg(qc->sg, sg, qc->n_elem, si) { 6909 ioadl64->flags = cpu_to_be32(ioadl_flags); 6910 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg)); 6911 ioadl64->address = cpu_to_be64(sg_dma_address(sg)); 6912 6913 last_ioadl64 = ioadl64; 6914 ioadl64++; 6915 } 6916 6917 if (likely(last_ioadl64)) 6918 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 6919 } 6920 6921 /** 6922 * ipr_build_ata_ioadl - Build an ATA scatter/gather list 6923 * @ipr_cmd: ipr command struct 6924 * @qc: ATA queued command 6925 * 6926 **/ 6927 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, 6928 struct ata_queued_cmd *qc) 6929 { 6930 u32 ioadl_flags = 0; 6931 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6932 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 6933 struct ipr_ioadl_desc *last_ioadl = NULL; 6934 int len = qc->nbytes; 6935 struct scatterlist *sg; 6936 unsigned int si; 6937 6938 if (len == 0) 6939 return; 6940 6941 if (qc->dma_dir == DMA_TO_DEVICE) { 6942 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 6943 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6944 ioarcb->data_transfer_length = cpu_to_be32(len); 6945 ioarcb->ioadl_len = 6946 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 6947 } else if (qc->dma_dir == DMA_FROM_DEVICE) { 6948 ioadl_flags = IPR_IOADL_FLAGS_READ; 6949 ioarcb->read_data_transfer_length = cpu_to_be32(len); 6950 ioarcb->read_ioadl_len = 6951 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 6952 } 6953 6954 for_each_sg(qc->sg, sg, qc->n_elem, si) { 6955 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 6956 ioadl->address = cpu_to_be32(sg_dma_address(sg)); 6957 6958 last_ioadl = ioadl; 6959 ioadl++; 6960 } 6961 6962 if (likely(last_ioadl)) 6963 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 6964 } 6965 6966 /** 6967 * ipr_qc_defer - Get a free ipr_cmd 6968 * @qc: queued command 6969 * 6970 * Return value: 6971 * 0 if success 6972 **/ 6973 static int ipr_qc_defer(struct ata_queued_cmd *qc) 6974 { 6975 struct ata_port *ap = qc->ap; 6976 struct ipr_sata_port *sata_port = ap->private_data; 6977 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 6978 struct ipr_cmnd *ipr_cmd; 6979 struct ipr_hrr_queue *hrrq; 6980 int hrrq_id; 6981 6982 hrrq_id = ipr_get_hrrq_index(ioa_cfg); 6983 hrrq = &ioa_cfg->hrrq[hrrq_id]; 6984 6985 qc->lldd_task = NULL; 6986 spin_lock(&hrrq->_lock); 6987 if (unlikely(hrrq->ioa_is_dead)) { 6988 spin_unlock(&hrrq->_lock); 6989 return 0; 6990 } 6991 6992 if (unlikely(!hrrq->allow_cmds)) { 6993 spin_unlock(&hrrq->_lock); 6994 return ATA_DEFER_LINK; 6995 } 6996 6997 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq); 6998 if (ipr_cmd == NULL) { 6999 spin_unlock(&hrrq->_lock); 7000 return ATA_DEFER_LINK; 7001 } 7002 7003 qc->lldd_task = ipr_cmd; 7004 spin_unlock(&hrrq->_lock); 7005 return 0; 7006 } 7007 7008 /** 7009 * ipr_qc_issue - Issue a SATA qc to a device 7010 * @qc: queued command 7011 * 7012 * Return value: 7013 * 0 if success 7014 **/ 7015 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) 7016 { 7017 struct ata_port *ap = qc->ap; 7018 struct ipr_sata_port *sata_port = ap->private_data; 7019 struct ipr_resource_entry *res = sata_port->res; 7020 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 7021 struct ipr_cmnd *ipr_cmd; 7022 struct ipr_ioarcb *ioarcb; 7023 struct ipr_ioarcb_ata_regs *regs; 7024 7025 if (qc->lldd_task == NULL) 7026 ipr_qc_defer(qc); 7027 7028 ipr_cmd = qc->lldd_task; 7029 if (ipr_cmd == NULL) 7030 return AC_ERR_SYSTEM; 7031 7032 qc->lldd_task = NULL; 7033 spin_lock(&ipr_cmd->hrrq->_lock); 7034 if (unlikely(!ipr_cmd->hrrq->allow_cmds || 7035 ipr_cmd->hrrq->ioa_is_dead)) { 7036 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 7037 spin_unlock(&ipr_cmd->hrrq->_lock); 7038 return AC_ERR_SYSTEM; 7039 } 7040 7041 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done); 7042 ioarcb = &ipr_cmd->ioarcb; 7043 7044 if (ioa_cfg->sis64) { 7045 regs = &ipr_cmd->i.ata_ioadl.regs; 7046 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb)); 7047 } else 7048 regs = &ioarcb->u.add_data.u.regs; 7049 7050 memset(regs, 0, sizeof(*regs)); 7051 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs)); 7052 7053 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 7054 ipr_cmd->qc = qc; 7055 ipr_cmd->done = ipr_sata_done; 7056 ipr_cmd->ioarcb.res_handle = res->res_handle; 7057 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU; 7058 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 7059 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 7060 ipr_cmd->dma_use_sg = qc->n_elem; 7061 7062 if (ioa_cfg->sis64) 7063 ipr_build_ata_ioadl64(ipr_cmd, qc); 7064 else 7065 ipr_build_ata_ioadl(ipr_cmd, qc); 7066 7067 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 7068 ipr_copy_sata_tf(regs, &qc->tf); 7069 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN); 7070 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res)); 7071 7072 switch (qc->tf.protocol) { 7073 case ATA_PROT_NODATA: 7074 case ATA_PROT_PIO: 7075 break; 7076 7077 case ATA_PROT_DMA: 7078 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 7079 break; 7080 7081 case ATAPI_PROT_PIO: 7082 case ATAPI_PROT_NODATA: 7083 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 7084 break; 7085 7086 case ATAPI_PROT_DMA: 7087 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 7088 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 7089 break; 7090 7091 default: 7092 WARN_ON(1); 7093 spin_unlock(&ipr_cmd->hrrq->_lock); 7094 return AC_ERR_INVALID; 7095 } 7096 7097 ipr_send_command(ipr_cmd); 7098 spin_unlock(&ipr_cmd->hrrq->_lock); 7099 7100 return 0; 7101 } 7102 7103 /** 7104 * ipr_qc_fill_rtf - Read result TF 7105 * @qc: ATA queued command 7106 * 7107 * Return value: 7108 * true 7109 **/ 7110 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc) 7111 { 7112 struct ipr_sata_port *sata_port = qc->ap->private_data; 7113 struct ipr_ioasa_gata *g = &sata_port->ioasa; 7114 struct ata_taskfile *tf = &qc->result_tf; 7115 7116 tf->feature = g->error; 7117 tf->nsect = g->nsect; 7118 tf->lbal = g->lbal; 7119 tf->lbam = g->lbam; 7120 tf->lbah = g->lbah; 7121 tf->device = g->device; 7122 tf->command = g->status; 7123 tf->hob_nsect = g->hob_nsect; 7124 tf->hob_lbal = g->hob_lbal; 7125 tf->hob_lbam = g->hob_lbam; 7126 tf->hob_lbah = g->hob_lbah; 7127 7128 return true; 7129 } 7130 7131 static struct ata_port_operations ipr_sata_ops = { 7132 .phy_reset = ipr_ata_phy_reset, 7133 .hardreset = ipr_sata_reset, 7134 .post_internal_cmd = ipr_ata_post_internal, 7135 .qc_prep = ata_noop_qc_prep, 7136 .qc_defer = ipr_qc_defer, 7137 .qc_issue = ipr_qc_issue, 7138 .qc_fill_rtf = ipr_qc_fill_rtf, 7139 .port_start = ata_sas_port_start, 7140 .port_stop = ata_sas_port_stop 7141 }; 7142 7143 static struct ata_port_info sata_port_info = { 7144 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA | 7145 ATA_FLAG_SAS_HOST, 7146 .pio_mask = ATA_PIO4_ONLY, 7147 .mwdma_mask = ATA_MWDMA2, 7148 .udma_mask = ATA_UDMA6, 7149 .port_ops = &ipr_sata_ops 7150 }; 7151 7152 #ifdef CONFIG_PPC_PSERIES 7153 static const u16 ipr_blocked_processors[] = { 7154 PVR_NORTHSTAR, 7155 PVR_PULSAR, 7156 PVR_POWER4, 7157 PVR_ICESTAR, 7158 PVR_SSTAR, 7159 PVR_POWER4p, 7160 PVR_630, 7161 PVR_630p 7162 }; 7163 7164 /** 7165 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 7166 * @ioa_cfg: ioa cfg struct 7167 * 7168 * Adapters that use Gemstone revision < 3.1 do not work reliably on 7169 * certain pSeries hardware. This function determines if the given 7170 * adapter is in one of these confgurations or not. 7171 * 7172 * Return value: 7173 * 1 if adapter is not supported / 0 if adapter is supported 7174 **/ 7175 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 7176 { 7177 int i; 7178 7179 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) { 7180 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) { 7181 if (pvr_version_is(ipr_blocked_processors[i])) 7182 return 1; 7183 } 7184 } 7185 return 0; 7186 } 7187 #else 7188 #define ipr_invalid_adapter(ioa_cfg) 0 7189 #endif 7190 7191 /** 7192 * ipr_ioa_bringdown_done - IOA bring down completion. 7193 * @ipr_cmd: ipr command struct 7194 * 7195 * This function processes the completion of an adapter bring down. 7196 * It wakes any reset sleepers. 7197 * 7198 * Return value: 7199 * IPR_RC_JOB_RETURN 7200 **/ 7201 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 7202 { 7203 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7204 int i; 7205 7206 ENTER; 7207 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) { 7208 ipr_trace; 7209 spin_unlock_irq(ioa_cfg->host->host_lock); 7210 scsi_unblock_requests(ioa_cfg->host); 7211 spin_lock_irq(ioa_cfg->host->host_lock); 7212 } 7213 7214 ioa_cfg->in_reset_reload = 0; 7215 ioa_cfg->reset_retries = 0; 7216 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 7217 spin_lock(&ioa_cfg->hrrq[i]._lock); 7218 ioa_cfg->hrrq[i].ioa_is_dead = 1; 7219 spin_unlock(&ioa_cfg->hrrq[i]._lock); 7220 } 7221 wmb(); 7222 7223 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 7224 wake_up_all(&ioa_cfg->reset_wait_q); 7225 LEAVE; 7226 7227 return IPR_RC_JOB_RETURN; 7228 } 7229 7230 /** 7231 * ipr_ioa_reset_done - IOA reset completion. 7232 * @ipr_cmd: ipr command struct 7233 * 7234 * This function processes the completion of an adapter reset. 7235 * It schedules any necessary mid-layer add/removes and 7236 * wakes any reset sleepers. 7237 * 7238 * Return value: 7239 * IPR_RC_JOB_RETURN 7240 **/ 7241 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 7242 { 7243 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7244 struct ipr_resource_entry *res; 7245 int j; 7246 7247 ENTER; 7248 ioa_cfg->in_reset_reload = 0; 7249 for (j = 0; j < ioa_cfg->hrrq_num; j++) { 7250 spin_lock(&ioa_cfg->hrrq[j]._lock); 7251 ioa_cfg->hrrq[j].allow_cmds = 1; 7252 spin_unlock(&ioa_cfg->hrrq[j]._lock); 7253 } 7254 wmb(); 7255 ioa_cfg->reset_cmd = NULL; 7256 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 7257 7258 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 7259 if (res->add_to_ml || res->del_from_ml) { 7260 ipr_trace; 7261 break; 7262 } 7263 } 7264 schedule_work(&ioa_cfg->work_q); 7265 7266 for (j = 0; j < IPR_NUM_HCAMS; j++) { 7267 list_del_init(&ioa_cfg->hostrcb[j]->queue); 7268 if (j < IPR_NUM_LOG_HCAMS) 7269 ipr_send_hcam(ioa_cfg, 7270 IPR_HCAM_CDB_OP_CODE_LOG_DATA, 7271 ioa_cfg->hostrcb[j]); 7272 else 7273 ipr_send_hcam(ioa_cfg, 7274 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 7275 ioa_cfg->hostrcb[j]); 7276 } 7277 7278 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS); 7279 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 7280 7281 ioa_cfg->reset_retries = 0; 7282 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 7283 wake_up_all(&ioa_cfg->reset_wait_q); 7284 7285 spin_unlock(ioa_cfg->host->host_lock); 7286 scsi_unblock_requests(ioa_cfg->host); 7287 spin_lock(ioa_cfg->host->host_lock); 7288 7289 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) 7290 scsi_block_requests(ioa_cfg->host); 7291 7292 schedule_work(&ioa_cfg->work_q); 7293 LEAVE; 7294 return IPR_RC_JOB_RETURN; 7295 } 7296 7297 /** 7298 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 7299 * @supported_dev: supported device struct 7300 * @vpids: vendor product id struct 7301 * 7302 * Return value: 7303 * none 7304 **/ 7305 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 7306 struct ipr_std_inq_vpids *vpids) 7307 { 7308 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 7309 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 7310 supported_dev->num_records = 1; 7311 supported_dev->data_length = 7312 cpu_to_be16(sizeof(struct ipr_supported_device)); 7313 supported_dev->reserved = 0; 7314 } 7315 7316 /** 7317 * ipr_set_supported_devs - Send Set Supported Devices for a device 7318 * @ipr_cmd: ipr command struct 7319 * 7320 * This function sends a Set Supported Devices to the adapter 7321 * 7322 * Return value: 7323 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7324 **/ 7325 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 7326 { 7327 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7328 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 7329 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7330 struct ipr_resource_entry *res = ipr_cmd->u.res; 7331 7332 ipr_cmd->job_step = ipr_ioa_reset_done; 7333 7334 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 7335 if (!ipr_is_scsi_disk(res)) 7336 continue; 7337 7338 ipr_cmd->u.res = res; 7339 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids); 7340 7341 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7342 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 7343 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7344 7345 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 7346 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES; 7347 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 7348 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 7349 7350 ipr_init_ioadl(ipr_cmd, 7351 ioa_cfg->vpd_cbs_dma + 7352 offsetof(struct ipr_misc_cbs, supp_dev), 7353 sizeof(struct ipr_supported_device), 7354 IPR_IOADL_FLAGS_WRITE_LAST); 7355 7356 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 7357 IPR_SET_SUP_DEVICE_TIMEOUT); 7358 7359 if (!ioa_cfg->sis64) 7360 ipr_cmd->job_step = ipr_set_supported_devs; 7361 LEAVE; 7362 return IPR_RC_JOB_RETURN; 7363 } 7364 7365 LEAVE; 7366 return IPR_RC_JOB_CONTINUE; 7367 } 7368 7369 /** 7370 * ipr_get_mode_page - Locate specified mode page 7371 * @mode_pages: mode page buffer 7372 * @page_code: page code to find 7373 * @len: minimum required length for mode page 7374 * 7375 * Return value: 7376 * pointer to mode page / NULL on failure 7377 **/ 7378 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 7379 u32 page_code, u32 len) 7380 { 7381 struct ipr_mode_page_hdr *mode_hdr; 7382 u32 page_length; 7383 u32 length; 7384 7385 if (!mode_pages || (mode_pages->hdr.length == 0)) 7386 return NULL; 7387 7388 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 7389 mode_hdr = (struct ipr_mode_page_hdr *) 7390 (mode_pages->data + mode_pages->hdr.block_desc_len); 7391 7392 while (length) { 7393 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 7394 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 7395 return mode_hdr; 7396 break; 7397 } else { 7398 page_length = (sizeof(struct ipr_mode_page_hdr) + 7399 mode_hdr->page_length); 7400 length -= page_length; 7401 mode_hdr = (struct ipr_mode_page_hdr *) 7402 ((unsigned long)mode_hdr + page_length); 7403 } 7404 } 7405 return NULL; 7406 } 7407 7408 /** 7409 * ipr_check_term_power - Check for term power errors 7410 * @ioa_cfg: ioa config struct 7411 * @mode_pages: IOAFP mode pages buffer 7412 * 7413 * Check the IOAFP's mode page 28 for term power errors 7414 * 7415 * Return value: 7416 * nothing 7417 **/ 7418 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 7419 struct ipr_mode_pages *mode_pages) 7420 { 7421 int i; 7422 int entry_length; 7423 struct ipr_dev_bus_entry *bus; 7424 struct ipr_mode_page28 *mode_page; 7425 7426 mode_page = ipr_get_mode_page(mode_pages, 0x28, 7427 sizeof(struct ipr_mode_page28)); 7428 7429 entry_length = mode_page->entry_length; 7430 7431 bus = mode_page->bus; 7432 7433 for (i = 0; i < mode_page->num_entries; i++) { 7434 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 7435 dev_err(&ioa_cfg->pdev->dev, 7436 "Term power is absent on scsi bus %d\n", 7437 bus->res_addr.bus); 7438 } 7439 7440 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 7441 } 7442 } 7443 7444 /** 7445 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 7446 * @ioa_cfg: ioa config struct 7447 * 7448 * Looks through the config table checking for SES devices. If 7449 * the SES device is in the SES table indicating a maximum SCSI 7450 * bus speed, the speed is limited for the bus. 7451 * 7452 * Return value: 7453 * none 7454 **/ 7455 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 7456 { 7457 u32 max_xfer_rate; 7458 int i; 7459 7460 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 7461 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 7462 ioa_cfg->bus_attr[i].bus_width); 7463 7464 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 7465 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 7466 } 7467 } 7468 7469 /** 7470 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 7471 * @ioa_cfg: ioa config struct 7472 * @mode_pages: mode page 28 buffer 7473 * 7474 * Updates mode page 28 based on driver configuration 7475 * 7476 * Return value: 7477 * none 7478 **/ 7479 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 7480 struct ipr_mode_pages *mode_pages) 7481 { 7482 int i, entry_length; 7483 struct ipr_dev_bus_entry *bus; 7484 struct ipr_bus_attributes *bus_attr; 7485 struct ipr_mode_page28 *mode_page; 7486 7487 mode_page = ipr_get_mode_page(mode_pages, 0x28, 7488 sizeof(struct ipr_mode_page28)); 7489 7490 entry_length = mode_page->entry_length; 7491 7492 /* Loop for each device bus entry */ 7493 for (i = 0, bus = mode_page->bus; 7494 i < mode_page->num_entries; 7495 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 7496 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 7497 dev_err(&ioa_cfg->pdev->dev, 7498 "Invalid resource address reported: 0x%08X\n", 7499 IPR_GET_PHYS_LOC(bus->res_addr)); 7500 continue; 7501 } 7502 7503 bus_attr = &ioa_cfg->bus_attr[i]; 7504 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 7505 bus->bus_width = bus_attr->bus_width; 7506 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 7507 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 7508 if (bus_attr->qas_enabled) 7509 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 7510 else 7511 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 7512 } 7513 } 7514 7515 /** 7516 * ipr_build_mode_select - Build a mode select command 7517 * @ipr_cmd: ipr command struct 7518 * @res_handle: resource handle to send command to 7519 * @parm: Byte 2 of Mode Sense command 7520 * @dma_addr: DMA buffer address 7521 * @xfer_len: data transfer length 7522 * 7523 * Return value: 7524 * none 7525 **/ 7526 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 7527 __be32 res_handle, u8 parm, 7528 dma_addr_t dma_addr, u8 xfer_len) 7529 { 7530 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7531 7532 ioarcb->res_handle = res_handle; 7533 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 7534 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 7535 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 7536 ioarcb->cmd_pkt.cdb[1] = parm; 7537 ioarcb->cmd_pkt.cdb[4] = xfer_len; 7538 7539 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST); 7540 } 7541 7542 /** 7543 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 7544 * @ipr_cmd: ipr command struct 7545 * 7546 * This function sets up the SCSI bus attributes and sends 7547 * a Mode Select for Page 28 to activate them. 7548 * 7549 * Return value: 7550 * IPR_RC_JOB_RETURN 7551 **/ 7552 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 7553 { 7554 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7555 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 7556 int length; 7557 7558 ENTER; 7559 ipr_scsi_bus_speed_limit(ioa_cfg); 7560 ipr_check_term_power(ioa_cfg, mode_pages); 7561 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 7562 length = mode_pages->hdr.length + 1; 7563 mode_pages->hdr.length = 0; 7564 7565 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 7566 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 7567 length); 7568 7569 ipr_cmd->job_step = ipr_set_supported_devs; 7570 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 7571 struct ipr_resource_entry, queue); 7572 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7573 7574 LEAVE; 7575 return IPR_RC_JOB_RETURN; 7576 } 7577 7578 /** 7579 * ipr_build_mode_sense - Builds a mode sense command 7580 * @ipr_cmd: ipr command struct 7581 * @res: resource entry struct 7582 * @parm: Byte 2 of mode sense command 7583 * @dma_addr: DMA address of mode sense buffer 7584 * @xfer_len: Size of DMA buffer 7585 * 7586 * Return value: 7587 * none 7588 **/ 7589 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 7590 __be32 res_handle, 7591 u8 parm, dma_addr_t dma_addr, u8 xfer_len) 7592 { 7593 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7594 7595 ioarcb->res_handle = res_handle; 7596 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 7597 ioarcb->cmd_pkt.cdb[2] = parm; 7598 ioarcb->cmd_pkt.cdb[4] = xfer_len; 7599 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 7600 7601 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 7602 } 7603 7604 /** 7605 * ipr_reset_cmd_failed - Handle failure of IOA reset command 7606 * @ipr_cmd: ipr command struct 7607 * 7608 * This function handles the failure of an IOA bringup command. 7609 * 7610 * Return value: 7611 * IPR_RC_JOB_RETURN 7612 **/ 7613 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 7614 { 7615 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7616 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7617 7618 dev_err(&ioa_cfg->pdev->dev, 7619 "0x%02X failed with IOASC: 0x%08X\n", 7620 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 7621 7622 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 7623 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 7624 return IPR_RC_JOB_RETURN; 7625 } 7626 7627 /** 7628 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 7629 * @ipr_cmd: ipr command struct 7630 * 7631 * This function handles the failure of a Mode Sense to the IOAFP. 7632 * Some adapters do not handle all mode pages. 7633 * 7634 * Return value: 7635 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7636 **/ 7637 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 7638 { 7639 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7640 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7641 7642 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 7643 ipr_cmd->job_step = ipr_set_supported_devs; 7644 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 7645 struct ipr_resource_entry, queue); 7646 return IPR_RC_JOB_CONTINUE; 7647 } 7648 7649 return ipr_reset_cmd_failed(ipr_cmd); 7650 } 7651 7652 /** 7653 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 7654 * @ipr_cmd: ipr command struct 7655 * 7656 * This function send a Page 28 mode sense to the IOA to 7657 * retrieve SCSI bus attributes. 7658 * 7659 * Return value: 7660 * IPR_RC_JOB_RETURN 7661 **/ 7662 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 7663 { 7664 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7665 7666 ENTER; 7667 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 7668 0x28, ioa_cfg->vpd_cbs_dma + 7669 offsetof(struct ipr_misc_cbs, mode_pages), 7670 sizeof(struct ipr_mode_pages)); 7671 7672 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 7673 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 7674 7675 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7676 7677 LEAVE; 7678 return IPR_RC_JOB_RETURN; 7679 } 7680 7681 /** 7682 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA 7683 * @ipr_cmd: ipr command struct 7684 * 7685 * This function enables dual IOA RAID support if possible. 7686 * 7687 * Return value: 7688 * IPR_RC_JOB_RETURN 7689 **/ 7690 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd) 7691 { 7692 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7693 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 7694 struct ipr_mode_page24 *mode_page; 7695 int length; 7696 7697 ENTER; 7698 mode_page = ipr_get_mode_page(mode_pages, 0x24, 7699 sizeof(struct ipr_mode_page24)); 7700 7701 if (mode_page) 7702 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF; 7703 7704 length = mode_pages->hdr.length + 1; 7705 mode_pages->hdr.length = 0; 7706 7707 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 7708 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 7709 length); 7710 7711 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 7712 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7713 7714 LEAVE; 7715 return IPR_RC_JOB_RETURN; 7716 } 7717 7718 /** 7719 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense 7720 * @ipr_cmd: ipr command struct 7721 * 7722 * This function handles the failure of a Mode Sense to the IOAFP. 7723 * Some adapters do not handle all mode pages. 7724 * 7725 * Return value: 7726 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7727 **/ 7728 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd) 7729 { 7730 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7731 7732 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 7733 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 7734 return IPR_RC_JOB_CONTINUE; 7735 } 7736 7737 return ipr_reset_cmd_failed(ipr_cmd); 7738 } 7739 7740 /** 7741 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA 7742 * @ipr_cmd: ipr command struct 7743 * 7744 * This function send a mode sense to the IOA to retrieve 7745 * the IOA Advanced Function Control mode page. 7746 * 7747 * Return value: 7748 * IPR_RC_JOB_RETURN 7749 **/ 7750 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd) 7751 { 7752 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7753 7754 ENTER; 7755 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 7756 0x24, ioa_cfg->vpd_cbs_dma + 7757 offsetof(struct ipr_misc_cbs, mode_pages), 7758 sizeof(struct ipr_mode_pages)); 7759 7760 ipr_cmd->job_step = ipr_ioafp_mode_select_page24; 7761 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed; 7762 7763 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7764 7765 LEAVE; 7766 return IPR_RC_JOB_RETURN; 7767 } 7768 7769 /** 7770 * ipr_init_res_table - Initialize the resource table 7771 * @ipr_cmd: ipr command struct 7772 * 7773 * This function looks through the existing resource table, comparing 7774 * it with the config table. This function will take care of old/new 7775 * devices and schedule adding/removing them from the mid-layer 7776 * as appropriate. 7777 * 7778 * Return value: 7779 * IPR_RC_JOB_CONTINUE 7780 **/ 7781 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 7782 { 7783 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7784 struct ipr_resource_entry *res, *temp; 7785 struct ipr_config_table_entry_wrapper cfgtew; 7786 int entries, found, flag, i; 7787 LIST_HEAD(old_res); 7788 7789 ENTER; 7790 if (ioa_cfg->sis64) 7791 flag = ioa_cfg->u.cfg_table64->hdr64.flags; 7792 else 7793 flag = ioa_cfg->u.cfg_table->hdr.flags; 7794 7795 if (flag & IPR_UCODE_DOWNLOAD_REQ) 7796 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 7797 7798 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 7799 list_move_tail(&res->queue, &old_res); 7800 7801 if (ioa_cfg->sis64) 7802 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries); 7803 else 7804 entries = ioa_cfg->u.cfg_table->hdr.num_entries; 7805 7806 for (i = 0; i < entries; i++) { 7807 if (ioa_cfg->sis64) 7808 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i]; 7809 else 7810 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i]; 7811 found = 0; 7812 7813 list_for_each_entry_safe(res, temp, &old_res, queue) { 7814 if (ipr_is_same_device(res, &cfgtew)) { 7815 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7816 found = 1; 7817 break; 7818 } 7819 } 7820 7821 if (!found) { 7822 if (list_empty(&ioa_cfg->free_res_q)) { 7823 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 7824 break; 7825 } 7826 7827 found = 1; 7828 res = list_entry(ioa_cfg->free_res_q.next, 7829 struct ipr_resource_entry, queue); 7830 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7831 ipr_init_res_entry(res, &cfgtew); 7832 res->add_to_ml = 1; 7833 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))) 7834 res->sdev->allow_restart = 1; 7835 7836 if (found) 7837 ipr_update_res_entry(res, &cfgtew); 7838 } 7839 7840 list_for_each_entry_safe(res, temp, &old_res, queue) { 7841 if (res->sdev) { 7842 res->del_from_ml = 1; 7843 res->res_handle = IPR_INVALID_RES_HANDLE; 7844 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7845 } 7846 } 7847 7848 list_for_each_entry_safe(res, temp, &old_res, queue) { 7849 ipr_clear_res_target(res); 7850 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 7851 } 7852 7853 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 7854 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24; 7855 else 7856 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 7857 7858 LEAVE; 7859 return IPR_RC_JOB_CONTINUE; 7860 } 7861 7862 /** 7863 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 7864 * @ipr_cmd: ipr command struct 7865 * 7866 * This function sends a Query IOA Configuration command 7867 * to the adapter to retrieve the IOA configuration table. 7868 * 7869 * Return value: 7870 * IPR_RC_JOB_RETURN 7871 **/ 7872 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 7873 { 7874 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7875 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7876 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 7877 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 7878 7879 ENTER; 7880 if (cap->cap & IPR_CAP_DUAL_IOA_RAID) 7881 ioa_cfg->dual_raid = 1; 7882 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 7883 ucode_vpd->major_release, ucode_vpd->card_type, 7884 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 7885 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7886 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7887 7888 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 7889 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff; 7890 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff; 7891 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff; 7892 7893 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size, 7894 IPR_IOADL_FLAGS_READ_LAST); 7895 7896 ipr_cmd->job_step = ipr_init_res_table; 7897 7898 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7899 7900 LEAVE; 7901 return IPR_RC_JOB_RETURN; 7902 } 7903 7904 static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd) 7905 { 7906 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7907 7908 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) 7909 return IPR_RC_JOB_CONTINUE; 7910 7911 return ipr_reset_cmd_failed(ipr_cmd); 7912 } 7913 7914 static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd, 7915 __be32 res_handle, u8 sa_code) 7916 { 7917 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7918 7919 ioarcb->res_handle = res_handle; 7920 ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION; 7921 ioarcb->cmd_pkt.cdb[1] = sa_code; 7922 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7923 } 7924 7925 /** 7926 * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service 7927 * action 7928 * 7929 * Return value: 7930 * none 7931 **/ 7932 static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd) 7933 { 7934 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7935 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7936 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data; 7937 7938 ENTER; 7939 7940 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 7941 7942 if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) { 7943 ipr_build_ioa_service_action(ipr_cmd, 7944 cpu_to_be32(IPR_IOA_RES_HANDLE), 7945 IPR_IOA_SA_CHANGE_CACHE_PARAMS); 7946 7947 ioarcb->cmd_pkt.cdb[2] = 0x40; 7948 7949 ipr_cmd->job_step_failed = ipr_ioa_service_action_failed; 7950 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 7951 IPR_SET_SUP_DEVICE_TIMEOUT); 7952 7953 LEAVE; 7954 return IPR_RC_JOB_RETURN; 7955 } 7956 7957 LEAVE; 7958 return IPR_RC_JOB_CONTINUE; 7959 } 7960 7961 /** 7962 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 7963 * @ipr_cmd: ipr command struct 7964 * 7965 * This utility function sends an inquiry to the adapter. 7966 * 7967 * Return value: 7968 * none 7969 **/ 7970 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 7971 dma_addr_t dma_addr, u8 xfer_len) 7972 { 7973 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7974 7975 ENTER; 7976 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 7977 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7978 7979 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 7980 ioarcb->cmd_pkt.cdb[1] = flags; 7981 ioarcb->cmd_pkt.cdb[2] = page; 7982 ioarcb->cmd_pkt.cdb[4] = xfer_len; 7983 7984 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 7985 7986 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7987 LEAVE; 7988 } 7989 7990 /** 7991 * ipr_inquiry_page_supported - Is the given inquiry page supported 7992 * @page0: inquiry page 0 buffer 7993 * @page: page code. 7994 * 7995 * This function determines if the specified inquiry page is supported. 7996 * 7997 * Return value: 7998 * 1 if page is supported / 0 if not 7999 **/ 8000 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 8001 { 8002 int i; 8003 8004 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 8005 if (page0->page[i] == page) 8006 return 1; 8007 8008 return 0; 8009 } 8010 8011 /** 8012 * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter. 8013 * @ipr_cmd: ipr command struct 8014 * 8015 * This function sends a Page 0xC4 inquiry to the adapter 8016 * to retrieve software VPD information. 8017 * 8018 * Return value: 8019 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8020 **/ 8021 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd) 8022 { 8023 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8024 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 8025 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data; 8026 8027 ENTER; 8028 ipr_cmd->job_step = ipr_ioafp_set_caching_parameters; 8029 memset(pageC4, 0, sizeof(*pageC4)); 8030 8031 if (ipr_inquiry_page_supported(page0, 0xC4)) { 8032 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4, 8033 (ioa_cfg->vpd_cbs_dma 8034 + offsetof(struct ipr_misc_cbs, 8035 pageC4_data)), 8036 sizeof(struct ipr_inquiry_pageC4)); 8037 return IPR_RC_JOB_RETURN; 8038 } 8039 8040 LEAVE; 8041 return IPR_RC_JOB_CONTINUE; 8042 } 8043 8044 /** 8045 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter. 8046 * @ipr_cmd: ipr command struct 8047 * 8048 * This function sends a Page 0xD0 inquiry to the adapter 8049 * to retrieve adapter capabilities. 8050 * 8051 * Return value: 8052 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8053 **/ 8054 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd) 8055 { 8056 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8057 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 8058 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 8059 8060 ENTER; 8061 ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry; 8062 memset(cap, 0, sizeof(*cap)); 8063 8064 if (ipr_inquiry_page_supported(page0, 0xD0)) { 8065 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0, 8066 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap), 8067 sizeof(struct ipr_inquiry_cap)); 8068 return IPR_RC_JOB_RETURN; 8069 } 8070 8071 LEAVE; 8072 return IPR_RC_JOB_CONTINUE; 8073 } 8074 8075 /** 8076 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 8077 * @ipr_cmd: ipr command struct 8078 * 8079 * This function sends a Page 3 inquiry to the adapter 8080 * to retrieve software VPD information. 8081 * 8082 * Return value: 8083 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8084 **/ 8085 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 8086 { 8087 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8088 8089 ENTER; 8090 8091 ipr_cmd->job_step = ipr_ioafp_cap_inquiry; 8092 8093 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 8094 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 8095 sizeof(struct ipr_inquiry_page3)); 8096 8097 LEAVE; 8098 return IPR_RC_JOB_RETURN; 8099 } 8100 8101 /** 8102 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 8103 * @ipr_cmd: ipr command struct 8104 * 8105 * This function sends a Page 0 inquiry to the adapter 8106 * to retrieve supported inquiry pages. 8107 * 8108 * Return value: 8109 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8110 **/ 8111 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 8112 { 8113 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8114 char type[5]; 8115 8116 ENTER; 8117 8118 /* Grab the type out of the VPD and store it away */ 8119 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 8120 type[4] = '\0'; 8121 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 8122 8123 if (ipr_invalid_adapter(ioa_cfg)) { 8124 dev_err(&ioa_cfg->pdev->dev, 8125 "Adapter not supported in this hardware configuration.\n"); 8126 8127 if (!ipr_testmode) { 8128 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 8129 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8130 list_add_tail(&ipr_cmd->queue, 8131 &ioa_cfg->hrrq->hrrq_free_q); 8132 return IPR_RC_JOB_RETURN; 8133 } 8134 } 8135 8136 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 8137 8138 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 8139 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 8140 sizeof(struct ipr_inquiry_page0)); 8141 8142 LEAVE; 8143 return IPR_RC_JOB_RETURN; 8144 } 8145 8146 /** 8147 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 8148 * @ipr_cmd: ipr command struct 8149 * 8150 * This function sends a standard inquiry to the adapter. 8151 * 8152 * Return value: 8153 * IPR_RC_JOB_RETURN 8154 **/ 8155 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 8156 { 8157 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8158 8159 ENTER; 8160 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 8161 8162 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 8163 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 8164 sizeof(struct ipr_ioa_vpd)); 8165 8166 LEAVE; 8167 return IPR_RC_JOB_RETURN; 8168 } 8169 8170 /** 8171 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ. 8172 * @ipr_cmd: ipr command struct 8173 * 8174 * This function send an Identify Host Request Response Queue 8175 * command to establish the HRRQ with the adapter. 8176 * 8177 * Return value: 8178 * IPR_RC_JOB_RETURN 8179 **/ 8180 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd) 8181 { 8182 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8183 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 8184 struct ipr_hrr_queue *hrrq; 8185 8186 ENTER; 8187 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 8188 if (ioa_cfg->identify_hrrq_index == 0) 8189 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 8190 8191 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) { 8192 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index]; 8193 8194 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 8195 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 8196 8197 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 8198 if (ioa_cfg->sis64) 8199 ioarcb->cmd_pkt.cdb[1] = 0x1; 8200 8201 if (ioa_cfg->nvectors == 1) 8202 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE; 8203 else 8204 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE; 8205 8206 ioarcb->cmd_pkt.cdb[2] = 8207 ((u64) hrrq->host_rrq_dma >> 24) & 0xff; 8208 ioarcb->cmd_pkt.cdb[3] = 8209 ((u64) hrrq->host_rrq_dma >> 16) & 0xff; 8210 ioarcb->cmd_pkt.cdb[4] = 8211 ((u64) hrrq->host_rrq_dma >> 8) & 0xff; 8212 ioarcb->cmd_pkt.cdb[5] = 8213 ((u64) hrrq->host_rrq_dma) & 0xff; 8214 ioarcb->cmd_pkt.cdb[7] = 8215 ((sizeof(u32) * hrrq->size) >> 8) & 0xff; 8216 ioarcb->cmd_pkt.cdb[8] = 8217 (sizeof(u32) * hrrq->size) & 0xff; 8218 8219 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE) 8220 ioarcb->cmd_pkt.cdb[9] = 8221 ioa_cfg->identify_hrrq_index; 8222 8223 if (ioa_cfg->sis64) { 8224 ioarcb->cmd_pkt.cdb[10] = 8225 ((u64) hrrq->host_rrq_dma >> 56) & 0xff; 8226 ioarcb->cmd_pkt.cdb[11] = 8227 ((u64) hrrq->host_rrq_dma >> 48) & 0xff; 8228 ioarcb->cmd_pkt.cdb[12] = 8229 ((u64) hrrq->host_rrq_dma >> 40) & 0xff; 8230 ioarcb->cmd_pkt.cdb[13] = 8231 ((u64) hrrq->host_rrq_dma >> 32) & 0xff; 8232 } 8233 8234 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE) 8235 ioarcb->cmd_pkt.cdb[14] = 8236 ioa_cfg->identify_hrrq_index; 8237 8238 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 8239 IPR_INTERNAL_TIMEOUT); 8240 8241 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) 8242 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 8243 8244 LEAVE; 8245 return IPR_RC_JOB_RETURN; 8246 } 8247 8248 LEAVE; 8249 return IPR_RC_JOB_CONTINUE; 8250 } 8251 8252 /** 8253 * ipr_reset_timer_done - Adapter reset timer function 8254 * @ipr_cmd: ipr command struct 8255 * 8256 * Description: This function is used in adapter reset processing 8257 * for timing events. If the reset_cmd pointer in the IOA 8258 * config struct is not this adapter's we are doing nested 8259 * resets and fail_all_ops will take care of freeing the 8260 * command block. 8261 * 8262 * Return value: 8263 * none 8264 **/ 8265 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 8266 { 8267 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8268 unsigned long lock_flags = 0; 8269 8270 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8271 8272 if (ioa_cfg->reset_cmd == ipr_cmd) { 8273 list_del(&ipr_cmd->queue); 8274 ipr_cmd->done(ipr_cmd); 8275 } 8276 8277 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8278 } 8279 8280 /** 8281 * ipr_reset_start_timer - Start a timer for adapter reset job 8282 * @ipr_cmd: ipr command struct 8283 * @timeout: timeout value 8284 * 8285 * Description: This function is used in adapter reset processing 8286 * for timing events. If the reset_cmd pointer in the IOA 8287 * config struct is not this adapter's we are doing nested 8288 * resets and fail_all_ops will take care of freeing the 8289 * command block. 8290 * 8291 * Return value: 8292 * none 8293 **/ 8294 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 8295 unsigned long timeout) 8296 { 8297 8298 ENTER; 8299 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 8300 ipr_cmd->done = ipr_reset_ioa_job; 8301 8302 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 8303 ipr_cmd->timer.expires = jiffies + timeout; 8304 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 8305 add_timer(&ipr_cmd->timer); 8306 } 8307 8308 /** 8309 * ipr_init_ioa_mem - Initialize ioa_cfg control block 8310 * @ioa_cfg: ioa cfg struct 8311 * 8312 * Return value: 8313 * nothing 8314 **/ 8315 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 8316 { 8317 struct ipr_hrr_queue *hrrq; 8318 8319 for_each_hrrq(hrrq, ioa_cfg) { 8320 spin_lock(&hrrq->_lock); 8321 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size); 8322 8323 /* Initialize Host RRQ pointers */ 8324 hrrq->hrrq_start = hrrq->host_rrq; 8325 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1]; 8326 hrrq->hrrq_curr = hrrq->hrrq_start; 8327 hrrq->toggle_bit = 1; 8328 spin_unlock(&hrrq->_lock); 8329 } 8330 wmb(); 8331 8332 ioa_cfg->identify_hrrq_index = 0; 8333 if (ioa_cfg->hrrq_num == 1) 8334 atomic_set(&ioa_cfg->hrrq_index, 0); 8335 else 8336 atomic_set(&ioa_cfg->hrrq_index, 1); 8337 8338 /* Zero out config table */ 8339 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size); 8340 } 8341 8342 /** 8343 * ipr_reset_next_stage - Process IPL stage change based on feedback register. 8344 * @ipr_cmd: ipr command struct 8345 * 8346 * Return value: 8347 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8348 **/ 8349 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd) 8350 { 8351 unsigned long stage, stage_time; 8352 u32 feedback; 8353 volatile u32 int_reg; 8354 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8355 u64 maskval = 0; 8356 8357 feedback = readl(ioa_cfg->regs.init_feedback_reg); 8358 stage = feedback & IPR_IPL_INIT_STAGE_MASK; 8359 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK; 8360 8361 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time); 8362 8363 /* sanity check the stage_time value */ 8364 if (stage_time == 0) 8365 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME; 8366 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME) 8367 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME; 8368 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT) 8369 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT; 8370 8371 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) { 8372 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg); 8373 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8374 stage_time = ioa_cfg->transop_timeout; 8375 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 8376 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) { 8377 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 8378 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 8379 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 8380 maskval = IPR_PCII_IPL_STAGE_CHANGE; 8381 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER; 8382 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg); 8383 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8384 return IPR_RC_JOB_CONTINUE; 8385 } 8386 } 8387 8388 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 8389 ipr_cmd->timer.expires = jiffies + stage_time * HZ; 8390 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 8391 ipr_cmd->done = ipr_reset_ioa_job; 8392 add_timer(&ipr_cmd->timer); 8393 8394 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 8395 8396 return IPR_RC_JOB_RETURN; 8397 } 8398 8399 /** 8400 * ipr_reset_enable_ioa - Enable the IOA following a reset. 8401 * @ipr_cmd: ipr command struct 8402 * 8403 * This function reinitializes some control blocks and 8404 * enables destructive diagnostics on the adapter. 8405 * 8406 * Return value: 8407 * IPR_RC_JOB_RETURN 8408 **/ 8409 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 8410 { 8411 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8412 volatile u32 int_reg; 8413 volatile u64 maskval; 8414 int i; 8415 8416 ENTER; 8417 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 8418 ipr_init_ioa_mem(ioa_cfg); 8419 8420 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 8421 spin_lock(&ioa_cfg->hrrq[i]._lock); 8422 ioa_cfg->hrrq[i].allow_interrupts = 1; 8423 spin_unlock(&ioa_cfg->hrrq[i]._lock); 8424 } 8425 wmb(); 8426 if (ioa_cfg->sis64) { 8427 /* Set the adapter to the correct endian mode. */ 8428 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg); 8429 int_reg = readl(ioa_cfg->regs.endian_swap_reg); 8430 } 8431 8432 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 8433 8434 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 8435 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 8436 ioa_cfg->regs.clr_interrupt_mask_reg32); 8437 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8438 return IPR_RC_JOB_CONTINUE; 8439 } 8440 8441 /* Enable destructive diagnostics on IOA */ 8442 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32); 8443 8444 if (ioa_cfg->sis64) { 8445 maskval = IPR_PCII_IPL_STAGE_CHANGE; 8446 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS; 8447 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg); 8448 } else 8449 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32); 8450 8451 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8452 8453 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 8454 8455 if (ioa_cfg->sis64) { 8456 ipr_cmd->job_step = ipr_reset_next_stage; 8457 return IPR_RC_JOB_CONTINUE; 8458 } 8459 8460 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 8461 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ); 8462 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 8463 ipr_cmd->done = ipr_reset_ioa_job; 8464 add_timer(&ipr_cmd->timer); 8465 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 8466 8467 LEAVE; 8468 return IPR_RC_JOB_RETURN; 8469 } 8470 8471 /** 8472 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 8473 * @ipr_cmd: ipr command struct 8474 * 8475 * This function is invoked when an adapter dump has run out 8476 * of processing time. 8477 * 8478 * Return value: 8479 * IPR_RC_JOB_CONTINUE 8480 **/ 8481 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 8482 { 8483 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8484 8485 if (ioa_cfg->sdt_state == GET_DUMP) 8486 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 8487 else if (ioa_cfg->sdt_state == READ_DUMP) 8488 ioa_cfg->sdt_state = ABORT_DUMP; 8489 8490 ioa_cfg->dump_timeout = 1; 8491 ipr_cmd->job_step = ipr_reset_alert; 8492 8493 return IPR_RC_JOB_CONTINUE; 8494 } 8495 8496 /** 8497 * ipr_unit_check_no_data - Log a unit check/no data error log 8498 * @ioa_cfg: ioa config struct 8499 * 8500 * Logs an error indicating the adapter unit checked, but for some 8501 * reason, we were unable to fetch the unit check buffer. 8502 * 8503 * Return value: 8504 * nothing 8505 **/ 8506 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 8507 { 8508 ioa_cfg->errors_logged++; 8509 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 8510 } 8511 8512 /** 8513 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 8514 * @ioa_cfg: ioa config struct 8515 * 8516 * Fetches the unit check buffer from the adapter by clocking the data 8517 * through the mailbox register. 8518 * 8519 * Return value: 8520 * nothing 8521 **/ 8522 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 8523 { 8524 unsigned long mailbox; 8525 struct ipr_hostrcb *hostrcb; 8526 struct ipr_uc_sdt sdt; 8527 int rc, length; 8528 u32 ioasc; 8529 8530 mailbox = readl(ioa_cfg->ioa_mailbox); 8531 8532 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) { 8533 ipr_unit_check_no_data(ioa_cfg); 8534 return; 8535 } 8536 8537 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 8538 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 8539 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 8540 8541 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) || 8542 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) && 8543 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) { 8544 ipr_unit_check_no_data(ioa_cfg); 8545 return; 8546 } 8547 8548 /* Find length of the first sdt entry (UC buffer) */ 8549 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE) 8550 length = be32_to_cpu(sdt.entry[0].end_token); 8551 else 8552 length = (be32_to_cpu(sdt.entry[0].end_token) - 8553 be32_to_cpu(sdt.entry[0].start_token)) & 8554 IPR_FMT2_MBX_ADDR_MASK; 8555 8556 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 8557 struct ipr_hostrcb, queue); 8558 list_del_init(&hostrcb->queue); 8559 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 8560 8561 rc = ipr_get_ldump_data_section(ioa_cfg, 8562 be32_to_cpu(sdt.entry[0].start_token), 8563 (__be32 *)&hostrcb->hcam, 8564 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 8565 8566 if (!rc) { 8567 ipr_handle_log_data(ioa_cfg, hostrcb); 8568 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 8569 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED && 8570 ioa_cfg->sdt_state == GET_DUMP) 8571 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 8572 } else 8573 ipr_unit_check_no_data(ioa_cfg); 8574 8575 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 8576 } 8577 8578 /** 8579 * ipr_reset_get_unit_check_job - Call to get the unit check buffer. 8580 * @ipr_cmd: ipr command struct 8581 * 8582 * Description: This function will call to get the unit check buffer. 8583 * 8584 * Return value: 8585 * IPR_RC_JOB_RETURN 8586 **/ 8587 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd) 8588 { 8589 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8590 8591 ENTER; 8592 ioa_cfg->ioa_unit_checked = 0; 8593 ipr_get_unit_check_buffer(ioa_cfg); 8594 ipr_cmd->job_step = ipr_reset_alert; 8595 ipr_reset_start_timer(ipr_cmd, 0); 8596 8597 LEAVE; 8598 return IPR_RC_JOB_RETURN; 8599 } 8600 8601 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd) 8602 { 8603 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8604 8605 ENTER; 8606 8607 if (ioa_cfg->sdt_state != GET_DUMP) 8608 return IPR_RC_JOB_RETURN; 8609 8610 if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left || 8611 (readl(ioa_cfg->regs.sense_interrupt_reg) & 8612 IPR_PCII_MAILBOX_STABLE)) { 8613 8614 if (!ipr_cmd->u.time_left) 8615 dev_err(&ioa_cfg->pdev->dev, 8616 "Timed out waiting for Mailbox register.\n"); 8617 8618 ioa_cfg->sdt_state = READ_DUMP; 8619 ioa_cfg->dump_timeout = 0; 8620 if (ioa_cfg->sis64) 8621 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT); 8622 else 8623 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT); 8624 ipr_cmd->job_step = ipr_reset_wait_for_dump; 8625 schedule_work(&ioa_cfg->work_q); 8626 8627 } else { 8628 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 8629 ipr_reset_start_timer(ipr_cmd, 8630 IPR_CHECK_FOR_RESET_TIMEOUT); 8631 } 8632 8633 LEAVE; 8634 return IPR_RC_JOB_RETURN; 8635 } 8636 8637 /** 8638 * ipr_reset_restore_cfg_space - Restore PCI config space. 8639 * @ipr_cmd: ipr command struct 8640 * 8641 * Description: This function restores the saved PCI config space of 8642 * the adapter, fails all outstanding ops back to the callers, and 8643 * fetches the dump/unit check if applicable to this reset. 8644 * 8645 * Return value: 8646 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8647 **/ 8648 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 8649 { 8650 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8651 u32 int_reg; 8652 8653 ENTER; 8654 ioa_cfg->pdev->state_saved = true; 8655 pci_restore_state(ioa_cfg->pdev); 8656 8657 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 8658 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 8659 return IPR_RC_JOB_CONTINUE; 8660 } 8661 8662 ipr_fail_all_ops(ioa_cfg); 8663 8664 if (ioa_cfg->sis64) { 8665 /* Set the adapter to the correct endian mode. */ 8666 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg); 8667 int_reg = readl(ioa_cfg->regs.endian_swap_reg); 8668 } 8669 8670 if (ioa_cfg->ioa_unit_checked) { 8671 if (ioa_cfg->sis64) { 8672 ipr_cmd->job_step = ipr_reset_get_unit_check_job; 8673 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT); 8674 return IPR_RC_JOB_RETURN; 8675 } else { 8676 ioa_cfg->ioa_unit_checked = 0; 8677 ipr_get_unit_check_buffer(ioa_cfg); 8678 ipr_cmd->job_step = ipr_reset_alert; 8679 ipr_reset_start_timer(ipr_cmd, 0); 8680 return IPR_RC_JOB_RETURN; 8681 } 8682 } 8683 8684 if (ioa_cfg->in_ioa_bringdown) { 8685 ipr_cmd->job_step = ipr_ioa_bringdown_done; 8686 } else if (ioa_cfg->sdt_state == GET_DUMP) { 8687 ipr_cmd->job_step = ipr_dump_mailbox_wait; 8688 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX; 8689 } else { 8690 ipr_cmd->job_step = ipr_reset_enable_ioa; 8691 } 8692 8693 LEAVE; 8694 return IPR_RC_JOB_CONTINUE; 8695 } 8696 8697 /** 8698 * ipr_reset_bist_done - BIST has completed on the adapter. 8699 * @ipr_cmd: ipr command struct 8700 * 8701 * Description: Unblock config space and resume the reset process. 8702 * 8703 * Return value: 8704 * IPR_RC_JOB_CONTINUE 8705 **/ 8706 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd) 8707 { 8708 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8709 8710 ENTER; 8711 if (ioa_cfg->cfg_locked) 8712 pci_cfg_access_unlock(ioa_cfg->pdev); 8713 ioa_cfg->cfg_locked = 0; 8714 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 8715 LEAVE; 8716 return IPR_RC_JOB_CONTINUE; 8717 } 8718 8719 /** 8720 * ipr_reset_start_bist - Run BIST on the adapter. 8721 * @ipr_cmd: ipr command struct 8722 * 8723 * Description: This function runs BIST on the adapter, then delays 2 seconds. 8724 * 8725 * Return value: 8726 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8727 **/ 8728 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 8729 { 8730 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8731 int rc = PCIBIOS_SUCCESSFUL; 8732 8733 ENTER; 8734 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO) 8735 writel(IPR_UPROCI_SIS64_START_BIST, 8736 ioa_cfg->regs.set_uproc_interrupt_reg32); 8737 else 8738 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 8739 8740 if (rc == PCIBIOS_SUCCESSFUL) { 8741 ipr_cmd->job_step = ipr_reset_bist_done; 8742 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 8743 rc = IPR_RC_JOB_RETURN; 8744 } else { 8745 if (ioa_cfg->cfg_locked) 8746 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev); 8747 ioa_cfg->cfg_locked = 0; 8748 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 8749 rc = IPR_RC_JOB_CONTINUE; 8750 } 8751 8752 LEAVE; 8753 return rc; 8754 } 8755 8756 /** 8757 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter 8758 * @ipr_cmd: ipr command struct 8759 * 8760 * Description: This clears PCI reset to the adapter and delays two seconds. 8761 * 8762 * Return value: 8763 * IPR_RC_JOB_RETURN 8764 **/ 8765 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd) 8766 { 8767 ENTER; 8768 ipr_cmd->job_step = ipr_reset_bist_done; 8769 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 8770 LEAVE; 8771 return IPR_RC_JOB_RETURN; 8772 } 8773 8774 /** 8775 * ipr_reset_reset_work - Pulse a PCIe fundamental reset 8776 * @work: work struct 8777 * 8778 * Description: This pulses warm reset to a slot. 8779 * 8780 **/ 8781 static void ipr_reset_reset_work(struct work_struct *work) 8782 { 8783 struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work); 8784 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8785 struct pci_dev *pdev = ioa_cfg->pdev; 8786 unsigned long lock_flags = 0; 8787 8788 ENTER; 8789 pci_set_pcie_reset_state(pdev, pcie_warm_reset); 8790 msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT)); 8791 pci_set_pcie_reset_state(pdev, pcie_deassert_reset); 8792 8793 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8794 if (ioa_cfg->reset_cmd == ipr_cmd) 8795 ipr_reset_ioa_job(ipr_cmd); 8796 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8797 LEAVE; 8798 } 8799 8800 /** 8801 * ipr_reset_slot_reset - Reset the PCI slot of the adapter. 8802 * @ipr_cmd: ipr command struct 8803 * 8804 * Description: This asserts PCI reset to the adapter. 8805 * 8806 * Return value: 8807 * IPR_RC_JOB_RETURN 8808 **/ 8809 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd) 8810 { 8811 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8812 8813 ENTER; 8814 INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work); 8815 queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work); 8816 ipr_cmd->job_step = ipr_reset_slot_reset_done; 8817 LEAVE; 8818 return IPR_RC_JOB_RETURN; 8819 } 8820 8821 /** 8822 * ipr_reset_block_config_access_wait - Wait for permission to block config access 8823 * @ipr_cmd: ipr command struct 8824 * 8825 * Description: This attempts to block config access to the IOA. 8826 * 8827 * Return value: 8828 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8829 **/ 8830 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd) 8831 { 8832 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8833 int rc = IPR_RC_JOB_CONTINUE; 8834 8835 if (pci_cfg_access_trylock(ioa_cfg->pdev)) { 8836 ioa_cfg->cfg_locked = 1; 8837 ipr_cmd->job_step = ioa_cfg->reset; 8838 } else { 8839 if (ipr_cmd->u.time_left) { 8840 rc = IPR_RC_JOB_RETURN; 8841 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 8842 ipr_reset_start_timer(ipr_cmd, 8843 IPR_CHECK_FOR_RESET_TIMEOUT); 8844 } else { 8845 ipr_cmd->job_step = ioa_cfg->reset; 8846 dev_err(&ioa_cfg->pdev->dev, 8847 "Timed out waiting to lock config access. Resetting anyway.\n"); 8848 } 8849 } 8850 8851 return rc; 8852 } 8853 8854 /** 8855 * ipr_reset_block_config_access - Block config access to the IOA 8856 * @ipr_cmd: ipr command struct 8857 * 8858 * Description: This attempts to block config access to the IOA 8859 * 8860 * Return value: 8861 * IPR_RC_JOB_CONTINUE 8862 **/ 8863 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd) 8864 { 8865 ipr_cmd->ioa_cfg->cfg_locked = 0; 8866 ipr_cmd->job_step = ipr_reset_block_config_access_wait; 8867 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 8868 return IPR_RC_JOB_CONTINUE; 8869 } 8870 8871 /** 8872 * ipr_reset_allowed - Query whether or not IOA can be reset 8873 * @ioa_cfg: ioa config struct 8874 * 8875 * Return value: 8876 * 0 if reset not allowed / non-zero if reset is allowed 8877 **/ 8878 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 8879 { 8880 volatile u32 temp_reg; 8881 8882 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 8883 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 8884 } 8885 8886 /** 8887 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 8888 * @ipr_cmd: ipr command struct 8889 * 8890 * Description: This function waits for adapter permission to run BIST, 8891 * then runs BIST. If the adapter does not give permission after a 8892 * reasonable time, we will reset the adapter anyway. The impact of 8893 * resetting the adapter without warning the adapter is the risk of 8894 * losing the persistent error log on the adapter. If the adapter is 8895 * reset while it is writing to the flash on the adapter, the flash 8896 * segment will have bad ECC and be zeroed. 8897 * 8898 * Return value: 8899 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8900 **/ 8901 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 8902 { 8903 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8904 int rc = IPR_RC_JOB_RETURN; 8905 8906 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 8907 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 8908 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 8909 } else { 8910 ipr_cmd->job_step = ipr_reset_block_config_access; 8911 rc = IPR_RC_JOB_CONTINUE; 8912 } 8913 8914 return rc; 8915 } 8916 8917 /** 8918 * ipr_reset_alert - Alert the adapter of a pending reset 8919 * @ipr_cmd: ipr command struct 8920 * 8921 * Description: This function alerts the adapter that it will be reset. 8922 * If memory space is not currently enabled, proceed directly 8923 * to running BIST on the adapter. The timer must always be started 8924 * so we guarantee we do not run BIST from ipr_isr. 8925 * 8926 * Return value: 8927 * IPR_RC_JOB_RETURN 8928 **/ 8929 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 8930 { 8931 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8932 u16 cmd_reg; 8933 int rc; 8934 8935 ENTER; 8936 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 8937 8938 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 8939 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 8940 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32); 8941 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 8942 } else { 8943 ipr_cmd->job_step = ipr_reset_block_config_access; 8944 } 8945 8946 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 8947 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 8948 8949 LEAVE; 8950 return IPR_RC_JOB_RETURN; 8951 } 8952 8953 /** 8954 * ipr_reset_quiesce_done - Complete IOA disconnect 8955 * @ipr_cmd: ipr command struct 8956 * 8957 * Description: Freeze the adapter to complete quiesce processing 8958 * 8959 * Return value: 8960 * IPR_RC_JOB_CONTINUE 8961 **/ 8962 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd) 8963 { 8964 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8965 8966 ENTER; 8967 ipr_cmd->job_step = ipr_ioa_bringdown_done; 8968 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 8969 LEAVE; 8970 return IPR_RC_JOB_CONTINUE; 8971 } 8972 8973 /** 8974 * ipr_reset_cancel_hcam_done - Check for outstanding commands 8975 * @ipr_cmd: ipr command struct 8976 * 8977 * Description: Ensure nothing is outstanding to the IOA and 8978 * proceed with IOA disconnect. Otherwise reset the IOA. 8979 * 8980 * Return value: 8981 * IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE 8982 **/ 8983 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd) 8984 { 8985 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8986 struct ipr_cmnd *loop_cmd; 8987 struct ipr_hrr_queue *hrrq; 8988 int rc = IPR_RC_JOB_CONTINUE; 8989 int count = 0; 8990 8991 ENTER; 8992 ipr_cmd->job_step = ipr_reset_quiesce_done; 8993 8994 for_each_hrrq(hrrq, ioa_cfg) { 8995 spin_lock(&hrrq->_lock); 8996 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) { 8997 count++; 8998 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8999 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 9000 rc = IPR_RC_JOB_RETURN; 9001 break; 9002 } 9003 spin_unlock(&hrrq->_lock); 9004 9005 if (count) 9006 break; 9007 } 9008 9009 LEAVE; 9010 return rc; 9011 } 9012 9013 /** 9014 * ipr_reset_cancel_hcam - Cancel outstanding HCAMs 9015 * @ipr_cmd: ipr command struct 9016 * 9017 * Description: Cancel any oustanding HCAMs to the IOA. 9018 * 9019 * Return value: 9020 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 9021 **/ 9022 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd) 9023 { 9024 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9025 int rc = IPR_RC_JOB_CONTINUE; 9026 struct ipr_cmd_pkt *cmd_pkt; 9027 struct ipr_cmnd *hcam_cmd; 9028 struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ]; 9029 9030 ENTER; 9031 ipr_cmd->job_step = ipr_reset_cancel_hcam_done; 9032 9033 if (!hrrq->ioa_is_dead) { 9034 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) { 9035 list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) { 9036 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC) 9037 continue; 9038 9039 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 9040 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 9041 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 9042 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 9043 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST; 9044 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB; 9045 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff; 9046 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff; 9047 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff; 9048 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff; 9049 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff; 9050 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff; 9051 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff; 9052 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff; 9053 9054 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 9055 IPR_CANCEL_TIMEOUT); 9056 9057 rc = IPR_RC_JOB_RETURN; 9058 ipr_cmd->job_step = ipr_reset_cancel_hcam; 9059 break; 9060 } 9061 } 9062 } else 9063 ipr_cmd->job_step = ipr_reset_alert; 9064 9065 LEAVE; 9066 return rc; 9067 } 9068 9069 /** 9070 * ipr_reset_ucode_download_done - Microcode download completion 9071 * @ipr_cmd: ipr command struct 9072 * 9073 * Description: This function unmaps the microcode download buffer. 9074 * 9075 * Return value: 9076 * IPR_RC_JOB_CONTINUE 9077 **/ 9078 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 9079 { 9080 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9081 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 9082 9083 dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist, 9084 sglist->num_sg, DMA_TO_DEVICE); 9085 9086 ipr_cmd->job_step = ipr_reset_alert; 9087 return IPR_RC_JOB_CONTINUE; 9088 } 9089 9090 /** 9091 * ipr_reset_ucode_download - Download microcode to the adapter 9092 * @ipr_cmd: ipr command struct 9093 * 9094 * Description: This function checks to see if it there is microcode 9095 * to download to the adapter. If there is, a download is performed. 9096 * 9097 * Return value: 9098 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 9099 **/ 9100 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 9101 { 9102 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9103 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 9104 9105 ENTER; 9106 ipr_cmd->job_step = ipr_reset_alert; 9107 9108 if (!sglist) 9109 return IPR_RC_JOB_CONTINUE; 9110 9111 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 9112 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 9113 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 9114 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 9115 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 9116 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 9117 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 9118 9119 if (ioa_cfg->sis64) 9120 ipr_build_ucode_ioadl64(ipr_cmd, sglist); 9121 else 9122 ipr_build_ucode_ioadl(ipr_cmd, sglist); 9123 ipr_cmd->job_step = ipr_reset_ucode_download_done; 9124 9125 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 9126 IPR_WRITE_BUFFER_TIMEOUT); 9127 9128 LEAVE; 9129 return IPR_RC_JOB_RETURN; 9130 } 9131 9132 /** 9133 * ipr_reset_shutdown_ioa - Shutdown the adapter 9134 * @ipr_cmd: ipr command struct 9135 * 9136 * Description: This function issues an adapter shutdown of the 9137 * specified type to the specified adapter as part of the 9138 * adapter reset job. 9139 * 9140 * Return value: 9141 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 9142 **/ 9143 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 9144 { 9145 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9146 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 9147 unsigned long timeout; 9148 int rc = IPR_RC_JOB_CONTINUE; 9149 9150 ENTER; 9151 if (shutdown_type == IPR_SHUTDOWN_QUIESCE) 9152 ipr_cmd->job_step = ipr_reset_cancel_hcam; 9153 else if (shutdown_type != IPR_SHUTDOWN_NONE && 9154 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) { 9155 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 9156 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 9157 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 9158 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 9159 9160 if (shutdown_type == IPR_SHUTDOWN_NORMAL) 9161 timeout = IPR_SHUTDOWN_TIMEOUT; 9162 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 9163 timeout = IPR_INTERNAL_TIMEOUT; 9164 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 9165 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO; 9166 else 9167 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 9168 9169 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 9170 9171 rc = IPR_RC_JOB_RETURN; 9172 ipr_cmd->job_step = ipr_reset_ucode_download; 9173 } else 9174 ipr_cmd->job_step = ipr_reset_alert; 9175 9176 LEAVE; 9177 return rc; 9178 } 9179 9180 /** 9181 * ipr_reset_ioa_job - Adapter reset job 9182 * @ipr_cmd: ipr command struct 9183 * 9184 * Description: This function is the job router for the adapter reset job. 9185 * 9186 * Return value: 9187 * none 9188 **/ 9189 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 9190 { 9191 u32 rc, ioasc; 9192 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9193 9194 do { 9195 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 9196 9197 if (ioa_cfg->reset_cmd != ipr_cmd) { 9198 /* 9199 * We are doing nested adapter resets and this is 9200 * not the current reset job. 9201 */ 9202 list_add_tail(&ipr_cmd->queue, 9203 &ipr_cmd->hrrq->hrrq_free_q); 9204 return; 9205 } 9206 9207 if (IPR_IOASC_SENSE_KEY(ioasc)) { 9208 rc = ipr_cmd->job_step_failed(ipr_cmd); 9209 if (rc == IPR_RC_JOB_RETURN) 9210 return; 9211 } 9212 9213 ipr_reinit_ipr_cmnd(ipr_cmd); 9214 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 9215 rc = ipr_cmd->job_step(ipr_cmd); 9216 } while (rc == IPR_RC_JOB_CONTINUE); 9217 } 9218 9219 /** 9220 * _ipr_initiate_ioa_reset - Initiate an adapter reset 9221 * @ioa_cfg: ioa config struct 9222 * @job_step: first job step of reset job 9223 * @shutdown_type: shutdown type 9224 * 9225 * Description: This function will initiate the reset of the given adapter 9226 * starting at the selected job step. 9227 * If the caller needs to wait on the completion of the reset, 9228 * the caller must sleep on the reset_wait_q. 9229 * 9230 * Return value: 9231 * none 9232 **/ 9233 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 9234 int (*job_step) (struct ipr_cmnd *), 9235 enum ipr_shutdown_type shutdown_type) 9236 { 9237 struct ipr_cmnd *ipr_cmd; 9238 int i; 9239 9240 ioa_cfg->in_reset_reload = 1; 9241 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9242 spin_lock(&ioa_cfg->hrrq[i]._lock); 9243 ioa_cfg->hrrq[i].allow_cmds = 0; 9244 spin_unlock(&ioa_cfg->hrrq[i]._lock); 9245 } 9246 wmb(); 9247 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) 9248 scsi_block_requests(ioa_cfg->host); 9249 9250 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 9251 ioa_cfg->reset_cmd = ipr_cmd; 9252 ipr_cmd->job_step = job_step; 9253 ipr_cmd->u.shutdown_type = shutdown_type; 9254 9255 ipr_reset_ioa_job(ipr_cmd); 9256 } 9257 9258 /** 9259 * ipr_initiate_ioa_reset - Initiate an adapter reset 9260 * @ioa_cfg: ioa config struct 9261 * @shutdown_type: shutdown type 9262 * 9263 * Description: This function will initiate the reset of the given adapter. 9264 * If the caller needs to wait on the completion of the reset, 9265 * the caller must sleep on the reset_wait_q. 9266 * 9267 * Return value: 9268 * none 9269 **/ 9270 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 9271 enum ipr_shutdown_type shutdown_type) 9272 { 9273 int i; 9274 9275 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 9276 return; 9277 9278 if (ioa_cfg->in_reset_reload) { 9279 if (ioa_cfg->sdt_state == GET_DUMP) 9280 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 9281 else if (ioa_cfg->sdt_state == READ_DUMP) 9282 ioa_cfg->sdt_state = ABORT_DUMP; 9283 } 9284 9285 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 9286 dev_err(&ioa_cfg->pdev->dev, 9287 "IOA taken offline - error recovery failed\n"); 9288 9289 ioa_cfg->reset_retries = 0; 9290 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9291 spin_lock(&ioa_cfg->hrrq[i]._lock); 9292 ioa_cfg->hrrq[i].ioa_is_dead = 1; 9293 spin_unlock(&ioa_cfg->hrrq[i]._lock); 9294 } 9295 wmb(); 9296 9297 if (ioa_cfg->in_ioa_bringdown) { 9298 ioa_cfg->reset_cmd = NULL; 9299 ioa_cfg->in_reset_reload = 0; 9300 ipr_fail_all_ops(ioa_cfg); 9301 wake_up_all(&ioa_cfg->reset_wait_q); 9302 9303 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) { 9304 spin_unlock_irq(ioa_cfg->host->host_lock); 9305 scsi_unblock_requests(ioa_cfg->host); 9306 spin_lock_irq(ioa_cfg->host->host_lock); 9307 } 9308 return; 9309 } else { 9310 ioa_cfg->in_ioa_bringdown = 1; 9311 shutdown_type = IPR_SHUTDOWN_NONE; 9312 } 9313 } 9314 9315 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 9316 shutdown_type); 9317 } 9318 9319 /** 9320 * ipr_reset_freeze - Hold off all I/O activity 9321 * @ipr_cmd: ipr command struct 9322 * 9323 * Description: If the PCI slot is frozen, hold off all I/O 9324 * activity; then, as soon as the slot is available again, 9325 * initiate an adapter reset. 9326 */ 9327 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 9328 { 9329 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9330 int i; 9331 9332 /* Disallow new interrupts, avoid loop */ 9333 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9334 spin_lock(&ioa_cfg->hrrq[i]._lock); 9335 ioa_cfg->hrrq[i].allow_interrupts = 0; 9336 spin_unlock(&ioa_cfg->hrrq[i]._lock); 9337 } 9338 wmb(); 9339 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 9340 ipr_cmd->done = ipr_reset_ioa_job; 9341 return IPR_RC_JOB_RETURN; 9342 } 9343 9344 /** 9345 * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled 9346 * @pdev: PCI device struct 9347 * 9348 * Description: This routine is called to tell us that the MMIO 9349 * access to the IOA has been restored 9350 */ 9351 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev) 9352 { 9353 unsigned long flags = 0; 9354 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9355 9356 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9357 if (!ioa_cfg->probe_done) 9358 pci_save_state(pdev); 9359 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9360 return PCI_ERS_RESULT_NEED_RESET; 9361 } 9362 9363 /** 9364 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 9365 * @pdev: PCI device struct 9366 * 9367 * Description: This routine is called to tell us that the PCI bus 9368 * is down. Can't do anything here, except put the device driver 9369 * into a holding pattern, waiting for the PCI bus to come back. 9370 */ 9371 static void ipr_pci_frozen(struct pci_dev *pdev) 9372 { 9373 unsigned long flags = 0; 9374 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9375 9376 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9377 if (ioa_cfg->probe_done) 9378 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 9379 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9380 } 9381 9382 /** 9383 * ipr_pci_slot_reset - Called when PCI slot has been reset. 9384 * @pdev: PCI device struct 9385 * 9386 * Description: This routine is called by the pci error recovery 9387 * code after the PCI slot has been reset, just before we 9388 * should resume normal operations. 9389 */ 9390 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 9391 { 9392 unsigned long flags = 0; 9393 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9394 9395 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9396 if (ioa_cfg->probe_done) { 9397 if (ioa_cfg->needs_warm_reset) 9398 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 9399 else 9400 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 9401 IPR_SHUTDOWN_NONE); 9402 } else 9403 wake_up_all(&ioa_cfg->eeh_wait_q); 9404 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9405 return PCI_ERS_RESULT_RECOVERED; 9406 } 9407 9408 /** 9409 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 9410 * @pdev: PCI device struct 9411 * 9412 * Description: This routine is called when the PCI bus has 9413 * permanently failed. 9414 */ 9415 static void ipr_pci_perm_failure(struct pci_dev *pdev) 9416 { 9417 unsigned long flags = 0; 9418 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9419 int i; 9420 9421 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9422 if (ioa_cfg->probe_done) { 9423 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 9424 ioa_cfg->sdt_state = ABORT_DUMP; 9425 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1; 9426 ioa_cfg->in_ioa_bringdown = 1; 9427 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9428 spin_lock(&ioa_cfg->hrrq[i]._lock); 9429 ioa_cfg->hrrq[i].allow_cmds = 0; 9430 spin_unlock(&ioa_cfg->hrrq[i]._lock); 9431 } 9432 wmb(); 9433 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 9434 } else 9435 wake_up_all(&ioa_cfg->eeh_wait_q); 9436 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9437 } 9438 9439 /** 9440 * ipr_pci_error_detected - Called when a PCI error is detected. 9441 * @pdev: PCI device struct 9442 * @state: PCI channel state 9443 * 9444 * Description: Called when a PCI error is detected. 9445 * 9446 * Return value: 9447 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 9448 */ 9449 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 9450 pci_channel_state_t state) 9451 { 9452 switch (state) { 9453 case pci_channel_io_frozen: 9454 ipr_pci_frozen(pdev); 9455 return PCI_ERS_RESULT_CAN_RECOVER; 9456 case pci_channel_io_perm_failure: 9457 ipr_pci_perm_failure(pdev); 9458 return PCI_ERS_RESULT_DISCONNECT; 9459 break; 9460 default: 9461 break; 9462 } 9463 return PCI_ERS_RESULT_NEED_RESET; 9464 } 9465 9466 /** 9467 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 9468 * @ioa_cfg: ioa cfg struct 9469 * 9470 * Description: This is the second phase of adapter initialization 9471 * This function takes care of initilizing the adapter to the point 9472 * where it can accept new commands. 9473 9474 * Return value: 9475 * 0 on success / -EIO on failure 9476 **/ 9477 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 9478 { 9479 int rc = 0; 9480 unsigned long host_lock_flags = 0; 9481 9482 ENTER; 9483 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 9484 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 9485 ioa_cfg->probe_done = 1; 9486 if (ioa_cfg->needs_hard_reset) { 9487 ioa_cfg->needs_hard_reset = 0; 9488 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 9489 } else 9490 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 9491 IPR_SHUTDOWN_NONE); 9492 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 9493 9494 LEAVE; 9495 return rc; 9496 } 9497 9498 /** 9499 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 9500 * @ioa_cfg: ioa config struct 9501 * 9502 * Return value: 9503 * none 9504 **/ 9505 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 9506 { 9507 int i; 9508 9509 if (ioa_cfg->ipr_cmnd_list) { 9510 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 9511 if (ioa_cfg->ipr_cmnd_list[i]) 9512 dma_pool_free(ioa_cfg->ipr_cmd_pool, 9513 ioa_cfg->ipr_cmnd_list[i], 9514 ioa_cfg->ipr_cmnd_list_dma[i]); 9515 9516 ioa_cfg->ipr_cmnd_list[i] = NULL; 9517 } 9518 } 9519 9520 if (ioa_cfg->ipr_cmd_pool) 9521 dma_pool_destroy(ioa_cfg->ipr_cmd_pool); 9522 9523 kfree(ioa_cfg->ipr_cmnd_list); 9524 kfree(ioa_cfg->ipr_cmnd_list_dma); 9525 ioa_cfg->ipr_cmnd_list = NULL; 9526 ioa_cfg->ipr_cmnd_list_dma = NULL; 9527 ioa_cfg->ipr_cmd_pool = NULL; 9528 } 9529 9530 /** 9531 * ipr_free_mem - Frees memory allocated for an adapter 9532 * @ioa_cfg: ioa cfg struct 9533 * 9534 * Return value: 9535 * nothing 9536 **/ 9537 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 9538 { 9539 int i; 9540 9541 kfree(ioa_cfg->res_entries); 9542 dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs), 9543 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 9544 ipr_free_cmd_blks(ioa_cfg); 9545 9546 for (i = 0; i < ioa_cfg->hrrq_num; i++) 9547 dma_free_coherent(&ioa_cfg->pdev->dev, 9548 sizeof(u32) * ioa_cfg->hrrq[i].size, 9549 ioa_cfg->hrrq[i].host_rrq, 9550 ioa_cfg->hrrq[i].host_rrq_dma); 9551 9552 dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size, 9553 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma); 9554 9555 for (i = 0; i < IPR_MAX_HCAMS; i++) { 9556 dma_free_coherent(&ioa_cfg->pdev->dev, 9557 sizeof(struct ipr_hostrcb), 9558 ioa_cfg->hostrcb[i], 9559 ioa_cfg->hostrcb_dma[i]); 9560 } 9561 9562 ipr_free_dump(ioa_cfg); 9563 kfree(ioa_cfg->trace); 9564 } 9565 9566 /** 9567 * ipr_free_irqs - Free all allocated IRQs for the adapter. 9568 * @ioa_cfg: ipr cfg struct 9569 * 9570 * This function frees all allocated IRQs for the 9571 * specified adapter. 9572 * 9573 * Return value: 9574 * none 9575 **/ 9576 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg) 9577 { 9578 struct pci_dev *pdev = ioa_cfg->pdev; 9579 int i; 9580 9581 for (i = 0; i < ioa_cfg->nvectors; i++) 9582 free_irq(pci_irq_vector(pdev, i), &ioa_cfg->hrrq[i]); 9583 pci_free_irq_vectors(pdev); 9584 } 9585 9586 /** 9587 * ipr_free_all_resources - Free all allocated resources for an adapter. 9588 * @ipr_cmd: ipr command struct 9589 * 9590 * This function frees all allocated resources for the 9591 * specified adapter. 9592 * 9593 * Return value: 9594 * none 9595 **/ 9596 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 9597 { 9598 struct pci_dev *pdev = ioa_cfg->pdev; 9599 9600 ENTER; 9601 ipr_free_irqs(ioa_cfg); 9602 if (ioa_cfg->reset_work_q) 9603 destroy_workqueue(ioa_cfg->reset_work_q); 9604 iounmap(ioa_cfg->hdw_dma_regs); 9605 pci_release_regions(pdev); 9606 ipr_free_mem(ioa_cfg); 9607 scsi_host_put(ioa_cfg->host); 9608 pci_disable_device(pdev); 9609 LEAVE; 9610 } 9611 9612 /** 9613 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 9614 * @ioa_cfg: ioa config struct 9615 * 9616 * Return value: 9617 * 0 on success / -ENOMEM on allocation failure 9618 **/ 9619 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 9620 { 9621 struct ipr_cmnd *ipr_cmd; 9622 struct ipr_ioarcb *ioarcb; 9623 dma_addr_t dma_addr; 9624 int i, entries_each_hrrq, hrrq_id = 0; 9625 9626 ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev, 9627 sizeof(struct ipr_cmnd), 512, 0); 9628 9629 if (!ioa_cfg->ipr_cmd_pool) 9630 return -ENOMEM; 9631 9632 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL); 9633 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL); 9634 9635 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) { 9636 ipr_free_cmd_blks(ioa_cfg); 9637 return -ENOMEM; 9638 } 9639 9640 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9641 if (ioa_cfg->hrrq_num > 1) { 9642 if (i == 0) { 9643 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS; 9644 ioa_cfg->hrrq[i].min_cmd_id = 0; 9645 ioa_cfg->hrrq[i].max_cmd_id = 9646 (entries_each_hrrq - 1); 9647 } else { 9648 entries_each_hrrq = 9649 IPR_NUM_BASE_CMD_BLKS/ 9650 (ioa_cfg->hrrq_num - 1); 9651 ioa_cfg->hrrq[i].min_cmd_id = 9652 IPR_NUM_INTERNAL_CMD_BLKS + 9653 (i - 1) * entries_each_hrrq; 9654 ioa_cfg->hrrq[i].max_cmd_id = 9655 (IPR_NUM_INTERNAL_CMD_BLKS + 9656 i * entries_each_hrrq - 1); 9657 } 9658 } else { 9659 entries_each_hrrq = IPR_NUM_CMD_BLKS; 9660 ioa_cfg->hrrq[i].min_cmd_id = 0; 9661 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1); 9662 } 9663 ioa_cfg->hrrq[i].size = entries_each_hrrq; 9664 } 9665 9666 BUG_ON(ioa_cfg->hrrq_num == 0); 9667 9668 i = IPR_NUM_CMD_BLKS - 9669 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1; 9670 if (i > 0) { 9671 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i; 9672 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i; 9673 } 9674 9675 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 9676 ipr_cmd = dma_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr); 9677 9678 if (!ipr_cmd) { 9679 ipr_free_cmd_blks(ioa_cfg); 9680 return -ENOMEM; 9681 } 9682 9683 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 9684 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 9685 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 9686 9687 ioarcb = &ipr_cmd->ioarcb; 9688 ipr_cmd->dma_addr = dma_addr; 9689 if (ioa_cfg->sis64) 9690 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr); 9691 else 9692 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 9693 9694 ioarcb->host_response_handle = cpu_to_be32(i << 2); 9695 if (ioa_cfg->sis64) { 9696 ioarcb->u.sis64_addr_data.data_ioadl_addr = 9697 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 9698 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr = 9699 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64)); 9700 } else { 9701 ioarcb->write_ioadl_addr = 9702 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 9703 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 9704 ioarcb->ioasa_host_pci_addr = 9705 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa)); 9706 } 9707 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 9708 ipr_cmd->cmd_index = i; 9709 ipr_cmd->ioa_cfg = ioa_cfg; 9710 ipr_cmd->sense_buffer_dma = dma_addr + 9711 offsetof(struct ipr_cmnd, sense_buffer); 9712 9713 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id; 9714 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id]; 9715 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 9716 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id) 9717 hrrq_id++; 9718 } 9719 9720 return 0; 9721 } 9722 9723 /** 9724 * ipr_alloc_mem - Allocate memory for an adapter 9725 * @ioa_cfg: ioa config struct 9726 * 9727 * Return value: 9728 * 0 on success / non-zero for error 9729 **/ 9730 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 9731 { 9732 struct pci_dev *pdev = ioa_cfg->pdev; 9733 int i, rc = -ENOMEM; 9734 9735 ENTER; 9736 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * 9737 ioa_cfg->max_devs_supported, GFP_KERNEL); 9738 9739 if (!ioa_cfg->res_entries) 9740 goto out; 9741 9742 for (i = 0; i < ioa_cfg->max_devs_supported; i++) { 9743 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 9744 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg; 9745 } 9746 9747 ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev, 9748 sizeof(struct ipr_misc_cbs), 9749 &ioa_cfg->vpd_cbs_dma, 9750 GFP_KERNEL); 9751 9752 if (!ioa_cfg->vpd_cbs) 9753 goto out_free_res_entries; 9754 9755 if (ipr_alloc_cmd_blks(ioa_cfg)) 9756 goto out_free_vpd_cbs; 9757 9758 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9759 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev, 9760 sizeof(u32) * ioa_cfg->hrrq[i].size, 9761 &ioa_cfg->hrrq[i].host_rrq_dma, 9762 GFP_KERNEL); 9763 9764 if (!ioa_cfg->hrrq[i].host_rrq) { 9765 while (--i > 0) 9766 dma_free_coherent(&pdev->dev, 9767 sizeof(u32) * ioa_cfg->hrrq[i].size, 9768 ioa_cfg->hrrq[i].host_rrq, 9769 ioa_cfg->hrrq[i].host_rrq_dma); 9770 goto out_ipr_free_cmd_blocks; 9771 } 9772 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg; 9773 } 9774 9775 ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev, 9776 ioa_cfg->cfg_table_size, 9777 &ioa_cfg->cfg_table_dma, 9778 GFP_KERNEL); 9779 9780 if (!ioa_cfg->u.cfg_table) 9781 goto out_free_host_rrq; 9782 9783 for (i = 0; i < IPR_MAX_HCAMS; i++) { 9784 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev, 9785 sizeof(struct ipr_hostrcb), 9786 &ioa_cfg->hostrcb_dma[i], 9787 GFP_KERNEL); 9788 9789 if (!ioa_cfg->hostrcb[i]) 9790 goto out_free_hostrcb_dma; 9791 9792 ioa_cfg->hostrcb[i]->hostrcb_dma = 9793 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 9794 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg; 9795 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 9796 } 9797 9798 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * 9799 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 9800 9801 if (!ioa_cfg->trace) 9802 goto out_free_hostrcb_dma; 9803 9804 rc = 0; 9805 out: 9806 LEAVE; 9807 return rc; 9808 9809 out_free_hostrcb_dma: 9810 while (i-- > 0) { 9811 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb), 9812 ioa_cfg->hostrcb[i], 9813 ioa_cfg->hostrcb_dma[i]); 9814 } 9815 dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size, 9816 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma); 9817 out_free_host_rrq: 9818 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9819 dma_free_coherent(&pdev->dev, 9820 sizeof(u32) * ioa_cfg->hrrq[i].size, 9821 ioa_cfg->hrrq[i].host_rrq, 9822 ioa_cfg->hrrq[i].host_rrq_dma); 9823 } 9824 out_ipr_free_cmd_blocks: 9825 ipr_free_cmd_blks(ioa_cfg); 9826 out_free_vpd_cbs: 9827 dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs), 9828 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 9829 out_free_res_entries: 9830 kfree(ioa_cfg->res_entries); 9831 goto out; 9832 } 9833 9834 /** 9835 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 9836 * @ioa_cfg: ioa config struct 9837 * 9838 * Return value: 9839 * none 9840 **/ 9841 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 9842 { 9843 int i; 9844 9845 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 9846 ioa_cfg->bus_attr[i].bus = i; 9847 ioa_cfg->bus_attr[i].qas_enabled = 0; 9848 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 9849 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 9850 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 9851 else 9852 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 9853 } 9854 } 9855 9856 /** 9857 * ipr_init_regs - Initialize IOA registers 9858 * @ioa_cfg: ioa config struct 9859 * 9860 * Return value: 9861 * none 9862 **/ 9863 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg) 9864 { 9865 const struct ipr_interrupt_offsets *p; 9866 struct ipr_interrupts *t; 9867 void __iomem *base; 9868 9869 p = &ioa_cfg->chip_cfg->regs; 9870 t = &ioa_cfg->regs; 9871 base = ioa_cfg->hdw_dma_regs; 9872 9873 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 9874 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 9875 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32; 9876 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 9877 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32; 9878 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 9879 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32; 9880 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 9881 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32; 9882 t->ioarrin_reg = base + p->ioarrin_reg; 9883 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 9884 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32; 9885 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 9886 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32; 9887 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 9888 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32; 9889 9890 if (ioa_cfg->sis64) { 9891 t->init_feedback_reg = base + p->init_feedback_reg; 9892 t->dump_addr_reg = base + p->dump_addr_reg; 9893 t->dump_data_reg = base + p->dump_data_reg; 9894 t->endian_swap_reg = base + p->endian_swap_reg; 9895 } 9896 } 9897 9898 /** 9899 * ipr_init_ioa_cfg - Initialize IOA config struct 9900 * @ioa_cfg: ioa config struct 9901 * @host: scsi host struct 9902 * @pdev: PCI dev struct 9903 * 9904 * Return value: 9905 * none 9906 **/ 9907 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 9908 struct Scsi_Host *host, struct pci_dev *pdev) 9909 { 9910 int i; 9911 9912 ioa_cfg->host = host; 9913 ioa_cfg->pdev = pdev; 9914 ioa_cfg->log_level = ipr_log_level; 9915 ioa_cfg->doorbell = IPR_DOORBELL; 9916 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 9917 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 9918 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 9919 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 9920 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 9921 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 9922 9923 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 9924 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 9925 INIT_LIST_HEAD(&ioa_cfg->hostrcb_report_q); 9926 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 9927 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 9928 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread); 9929 init_waitqueue_head(&ioa_cfg->reset_wait_q); 9930 init_waitqueue_head(&ioa_cfg->msi_wait_q); 9931 init_waitqueue_head(&ioa_cfg->eeh_wait_q); 9932 ioa_cfg->sdt_state = INACTIVE; 9933 9934 ipr_initialize_bus_attr(ioa_cfg); 9935 ioa_cfg->max_devs_supported = ipr_max_devs; 9936 9937 if (ioa_cfg->sis64) { 9938 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS; 9939 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET; 9940 if (ipr_max_devs > IPR_MAX_SIS64_DEVS) 9941 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS; 9942 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64) 9943 + ((sizeof(struct ipr_config_table_entry64) 9944 * ioa_cfg->max_devs_supported))); 9945 } else { 9946 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 9947 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 9948 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS) 9949 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS; 9950 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr) 9951 + ((sizeof(struct ipr_config_table_entry) 9952 * ioa_cfg->max_devs_supported))); 9953 } 9954 9955 host->max_channel = IPR_VSET_BUS; 9956 host->unique_id = host->host_no; 9957 host->max_cmd_len = IPR_MAX_CDB_LEN; 9958 host->can_queue = ioa_cfg->max_cmds; 9959 pci_set_drvdata(pdev, ioa_cfg); 9960 9961 for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) { 9962 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q); 9963 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q); 9964 spin_lock_init(&ioa_cfg->hrrq[i]._lock); 9965 if (i == 0) 9966 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock; 9967 else 9968 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock; 9969 } 9970 } 9971 9972 /** 9973 * ipr_get_chip_info - Find adapter chip information 9974 * @dev_id: PCI device id struct 9975 * 9976 * Return value: 9977 * ptr to chip information on success / NULL on failure 9978 **/ 9979 static const struct ipr_chip_t * 9980 ipr_get_chip_info(const struct pci_device_id *dev_id) 9981 { 9982 int i; 9983 9984 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 9985 if (ipr_chip[i].vendor == dev_id->vendor && 9986 ipr_chip[i].device == dev_id->device) 9987 return &ipr_chip[i]; 9988 return NULL; 9989 } 9990 9991 /** 9992 * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete 9993 * during probe time 9994 * @ioa_cfg: ioa config struct 9995 * 9996 * Return value: 9997 * None 9998 **/ 9999 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg) 10000 { 10001 struct pci_dev *pdev = ioa_cfg->pdev; 10002 10003 if (pci_channel_offline(pdev)) { 10004 wait_event_timeout(ioa_cfg->eeh_wait_q, 10005 !pci_channel_offline(pdev), 10006 IPR_PCI_ERROR_RECOVERY_TIMEOUT); 10007 pci_restore_state(pdev); 10008 } 10009 } 10010 10011 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg) 10012 { 10013 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1; 10014 10015 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) { 10016 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n, 10017 "host%d-%d", ioa_cfg->host->host_no, vec_idx); 10018 ioa_cfg->vectors_info[vec_idx]. 10019 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0; 10020 } 10021 } 10022 10023 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg, 10024 struct pci_dev *pdev) 10025 { 10026 int i, rc; 10027 10028 for (i = 1; i < ioa_cfg->nvectors; i++) { 10029 rc = request_irq(pci_irq_vector(pdev, i), 10030 ipr_isr_mhrrq, 10031 0, 10032 ioa_cfg->vectors_info[i].desc, 10033 &ioa_cfg->hrrq[i]); 10034 if (rc) { 10035 while (--i >= 0) 10036 free_irq(pci_irq_vector(pdev, i), 10037 &ioa_cfg->hrrq[i]); 10038 return rc; 10039 } 10040 } 10041 return 0; 10042 } 10043 10044 /** 10045 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi(). 10046 * @pdev: PCI device struct 10047 * 10048 * Description: Simply set the msi_received flag to 1 indicating that 10049 * Message Signaled Interrupts are supported. 10050 * 10051 * Return value: 10052 * 0 on success / non-zero on failure 10053 **/ 10054 static irqreturn_t ipr_test_intr(int irq, void *devp) 10055 { 10056 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 10057 unsigned long lock_flags = 0; 10058 irqreturn_t rc = IRQ_HANDLED; 10059 10060 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq); 10061 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10062 10063 ioa_cfg->msi_received = 1; 10064 wake_up(&ioa_cfg->msi_wait_q); 10065 10066 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10067 return rc; 10068 } 10069 10070 /** 10071 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support. 10072 * @pdev: PCI device struct 10073 * 10074 * Description: This routine sets up and initiates a test interrupt to determine 10075 * if the interrupt is received via the ipr_test_intr() service routine. 10076 * If the tests fails, the driver will fall back to LSI. 10077 * 10078 * Return value: 10079 * 0 on success / non-zero on failure 10080 **/ 10081 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev) 10082 { 10083 int rc; 10084 volatile u32 int_reg; 10085 unsigned long lock_flags = 0; 10086 int irq = pci_irq_vector(pdev, 0); 10087 10088 ENTER; 10089 10090 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10091 init_waitqueue_head(&ioa_cfg->msi_wait_q); 10092 ioa_cfg->msi_received = 0; 10093 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 10094 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32); 10095 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 10096 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10097 10098 rc = request_irq(irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg); 10099 if (rc) { 10100 dev_err(&pdev->dev, "Can not assign irq %d\n", irq); 10101 return rc; 10102 } else if (ipr_debug) 10103 dev_info(&pdev->dev, "IRQ assigned: %d\n", irq); 10104 10105 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32); 10106 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 10107 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ); 10108 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10109 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 10110 10111 if (!ioa_cfg->msi_received) { 10112 /* MSI test failed */ 10113 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n"); 10114 rc = -EOPNOTSUPP; 10115 } else if (ipr_debug) 10116 dev_info(&pdev->dev, "MSI test succeeded.\n"); 10117 10118 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10119 10120 free_irq(irq, ioa_cfg); 10121 10122 LEAVE; 10123 10124 return rc; 10125 } 10126 10127 /* ipr_probe_ioa - Allocates memory and does first stage of initialization 10128 * @pdev: PCI device struct 10129 * @dev_id: PCI device id struct 10130 * 10131 * Return value: 10132 * 0 on success / non-zero on failure 10133 **/ 10134 static int ipr_probe_ioa(struct pci_dev *pdev, 10135 const struct pci_device_id *dev_id) 10136 { 10137 struct ipr_ioa_cfg *ioa_cfg; 10138 struct Scsi_Host *host; 10139 unsigned long ipr_regs_pci; 10140 void __iomem *ipr_regs; 10141 int rc = PCIBIOS_SUCCESSFUL; 10142 volatile u32 mask, uproc, interrupts; 10143 unsigned long lock_flags, driver_lock_flags; 10144 unsigned int irq_flag; 10145 10146 ENTER; 10147 10148 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 10149 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 10150 10151 if (!host) { 10152 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 10153 rc = -ENOMEM; 10154 goto out; 10155 } 10156 10157 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 10158 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 10159 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops); 10160 10161 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id); 10162 10163 if (!ioa_cfg->ipr_chip) { 10164 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 10165 dev_id->vendor, dev_id->device); 10166 goto out_scsi_host_put; 10167 } 10168 10169 /* set SIS 32 or SIS 64 */ 10170 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0; 10171 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg; 10172 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr; 10173 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds; 10174 10175 if (ipr_transop_timeout) 10176 ioa_cfg->transop_timeout = ipr_transop_timeout; 10177 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT) 10178 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT; 10179 else 10180 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT; 10181 10182 ioa_cfg->revid = pdev->revision; 10183 10184 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 10185 10186 ipr_regs_pci = pci_resource_start(pdev, 0); 10187 10188 rc = pci_request_regions(pdev, IPR_NAME); 10189 if (rc < 0) { 10190 dev_err(&pdev->dev, 10191 "Couldn't register memory range of registers\n"); 10192 goto out_scsi_host_put; 10193 } 10194 10195 rc = pci_enable_device(pdev); 10196 10197 if (rc || pci_channel_offline(pdev)) { 10198 if (pci_channel_offline(pdev)) { 10199 ipr_wait_for_pci_err_recovery(ioa_cfg); 10200 rc = pci_enable_device(pdev); 10201 } 10202 10203 if (rc) { 10204 dev_err(&pdev->dev, "Cannot enable adapter\n"); 10205 ipr_wait_for_pci_err_recovery(ioa_cfg); 10206 goto out_release_regions; 10207 } 10208 } 10209 10210 ipr_regs = pci_ioremap_bar(pdev, 0); 10211 10212 if (!ipr_regs) { 10213 dev_err(&pdev->dev, 10214 "Couldn't map memory range of registers\n"); 10215 rc = -ENOMEM; 10216 goto out_disable; 10217 } 10218 10219 ioa_cfg->hdw_dma_regs = ipr_regs; 10220 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 10221 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 10222 10223 ipr_init_regs(ioa_cfg); 10224 10225 if (ioa_cfg->sis64) { 10226 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 10227 if (rc < 0) { 10228 dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n"); 10229 rc = dma_set_mask_and_coherent(&pdev->dev, 10230 DMA_BIT_MASK(32)); 10231 } 10232 } else 10233 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 10234 10235 if (rc < 0) { 10236 dev_err(&pdev->dev, "Failed to set DMA mask\n"); 10237 goto cleanup_nomem; 10238 } 10239 10240 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 10241 ioa_cfg->chip_cfg->cache_line_size); 10242 10243 if (rc != PCIBIOS_SUCCESSFUL) { 10244 dev_err(&pdev->dev, "Write of cache line size failed\n"); 10245 ipr_wait_for_pci_err_recovery(ioa_cfg); 10246 rc = -EIO; 10247 goto cleanup_nomem; 10248 } 10249 10250 /* Issue MMIO read to ensure card is not in EEH */ 10251 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg); 10252 ipr_wait_for_pci_err_recovery(ioa_cfg); 10253 10254 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) { 10255 dev_err(&pdev->dev, "The max number of MSIX is %d\n", 10256 IPR_MAX_MSIX_VECTORS); 10257 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS; 10258 } 10259 10260 irq_flag = PCI_IRQ_LEGACY; 10261 if (ioa_cfg->ipr_chip->has_msi) 10262 irq_flag |= PCI_IRQ_MSI | PCI_IRQ_MSIX; 10263 rc = pci_alloc_irq_vectors(pdev, 1, ipr_number_of_msix, irq_flag); 10264 if (rc < 0) { 10265 ipr_wait_for_pci_err_recovery(ioa_cfg); 10266 goto cleanup_nomem; 10267 } 10268 ioa_cfg->nvectors = rc; 10269 10270 if (!pdev->msi_enabled && !pdev->msix_enabled) 10271 ioa_cfg->clear_isr = 1; 10272 10273 pci_set_master(pdev); 10274 10275 if (pci_channel_offline(pdev)) { 10276 ipr_wait_for_pci_err_recovery(ioa_cfg); 10277 pci_set_master(pdev); 10278 if (pci_channel_offline(pdev)) { 10279 rc = -EIO; 10280 goto out_msi_disable; 10281 } 10282 } 10283 10284 if (pdev->msi_enabled || pdev->msix_enabled) { 10285 rc = ipr_test_msi(ioa_cfg, pdev); 10286 switch (rc) { 10287 case 0: 10288 dev_info(&pdev->dev, 10289 "Request for %d MSI%ss succeeded.", ioa_cfg->nvectors, 10290 pdev->msix_enabled ? "-X" : ""); 10291 break; 10292 case -EOPNOTSUPP: 10293 ipr_wait_for_pci_err_recovery(ioa_cfg); 10294 pci_free_irq_vectors(pdev); 10295 10296 ioa_cfg->nvectors = 1; 10297 ioa_cfg->clear_isr = 1; 10298 break; 10299 default: 10300 goto out_msi_disable; 10301 } 10302 } 10303 10304 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors, 10305 (unsigned int)num_online_cpus(), 10306 (unsigned int)IPR_MAX_HRRQ_NUM); 10307 10308 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 10309 goto out_msi_disable; 10310 10311 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 10312 goto out_msi_disable; 10313 10314 rc = ipr_alloc_mem(ioa_cfg); 10315 if (rc < 0) { 10316 dev_err(&pdev->dev, 10317 "Couldn't allocate enough memory for device driver!\n"); 10318 goto out_msi_disable; 10319 } 10320 10321 /* Save away PCI config space for use following IOA reset */ 10322 rc = pci_save_state(pdev); 10323 10324 if (rc != PCIBIOS_SUCCESSFUL) { 10325 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 10326 rc = -EIO; 10327 goto cleanup_nolog; 10328 } 10329 10330 /* 10331 * If HRRQ updated interrupt is not masked, or reset alert is set, 10332 * the card is in an unknown state and needs a hard reset 10333 */ 10334 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 10335 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32); 10336 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); 10337 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 10338 ioa_cfg->needs_hard_reset = 1; 10339 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices) 10340 ioa_cfg->needs_hard_reset = 1; 10341 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED) 10342 ioa_cfg->ioa_unit_checked = 1; 10343 10344 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10345 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 10346 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10347 10348 if (pdev->msi_enabled || pdev->msix_enabled) { 10349 name_msi_vectors(ioa_cfg); 10350 rc = request_irq(pci_irq_vector(pdev, 0), ipr_isr, 0, 10351 ioa_cfg->vectors_info[0].desc, 10352 &ioa_cfg->hrrq[0]); 10353 if (!rc) 10354 rc = ipr_request_other_msi_irqs(ioa_cfg, pdev); 10355 } else { 10356 rc = request_irq(pdev->irq, ipr_isr, 10357 IRQF_SHARED, 10358 IPR_NAME, &ioa_cfg->hrrq[0]); 10359 } 10360 if (rc) { 10361 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 10362 pdev->irq, rc); 10363 goto cleanup_nolog; 10364 } 10365 10366 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) || 10367 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) { 10368 ioa_cfg->needs_warm_reset = 1; 10369 ioa_cfg->reset = ipr_reset_slot_reset; 10370 10371 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d", 10372 WQ_MEM_RECLAIM, host->host_no); 10373 10374 if (!ioa_cfg->reset_work_q) { 10375 dev_err(&pdev->dev, "Couldn't register reset workqueue\n"); 10376 rc = -ENOMEM; 10377 goto out_free_irq; 10378 } 10379 } else 10380 ioa_cfg->reset = ipr_reset_start_bist; 10381 10382 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); 10383 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 10384 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); 10385 10386 LEAVE; 10387 out: 10388 return rc; 10389 10390 out_free_irq: 10391 ipr_free_irqs(ioa_cfg); 10392 cleanup_nolog: 10393 ipr_free_mem(ioa_cfg); 10394 out_msi_disable: 10395 ipr_wait_for_pci_err_recovery(ioa_cfg); 10396 pci_free_irq_vectors(pdev); 10397 cleanup_nomem: 10398 iounmap(ipr_regs); 10399 out_disable: 10400 pci_disable_device(pdev); 10401 out_release_regions: 10402 pci_release_regions(pdev); 10403 out_scsi_host_put: 10404 scsi_host_put(host); 10405 goto out; 10406 } 10407 10408 /** 10409 * ipr_initiate_ioa_bringdown - Bring down an adapter 10410 * @ioa_cfg: ioa config struct 10411 * @shutdown_type: shutdown type 10412 * 10413 * Description: This function will initiate bringing down the adapter. 10414 * This consists of issuing an IOA shutdown to the adapter 10415 * to flush the cache, and running BIST. 10416 * If the caller needs to wait on the completion of the reset, 10417 * the caller must sleep on the reset_wait_q. 10418 * 10419 * Return value: 10420 * none 10421 **/ 10422 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 10423 enum ipr_shutdown_type shutdown_type) 10424 { 10425 ENTER; 10426 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 10427 ioa_cfg->sdt_state = ABORT_DUMP; 10428 ioa_cfg->reset_retries = 0; 10429 ioa_cfg->in_ioa_bringdown = 1; 10430 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 10431 LEAVE; 10432 } 10433 10434 /** 10435 * __ipr_remove - Remove a single adapter 10436 * @pdev: pci device struct 10437 * 10438 * Adapter hot plug remove entry point. 10439 * 10440 * Return value: 10441 * none 10442 **/ 10443 static void __ipr_remove(struct pci_dev *pdev) 10444 { 10445 unsigned long host_lock_flags = 0; 10446 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 10447 int i; 10448 unsigned long driver_lock_flags; 10449 ENTER; 10450 10451 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 10452 while (ioa_cfg->in_reset_reload) { 10453 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 10454 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 10455 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 10456 } 10457 10458 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 10459 spin_lock(&ioa_cfg->hrrq[i]._lock); 10460 ioa_cfg->hrrq[i].removing_ioa = 1; 10461 spin_unlock(&ioa_cfg->hrrq[i]._lock); 10462 } 10463 wmb(); 10464 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 10465 10466 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 10467 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 10468 flush_work(&ioa_cfg->work_q); 10469 if (ioa_cfg->reset_work_q) 10470 flush_workqueue(ioa_cfg->reset_work_q); 10471 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 10472 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 10473 10474 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); 10475 list_del(&ioa_cfg->queue); 10476 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); 10477 10478 if (ioa_cfg->sdt_state == ABORT_DUMP) 10479 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 10480 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 10481 10482 ipr_free_all_resources(ioa_cfg); 10483 10484 LEAVE; 10485 } 10486 10487 /** 10488 * ipr_remove - IOA hot plug remove entry point 10489 * @pdev: pci device struct 10490 * 10491 * Adapter hot plug remove entry point. 10492 * 10493 * Return value: 10494 * none 10495 **/ 10496 static void ipr_remove(struct pci_dev *pdev) 10497 { 10498 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 10499 10500 ENTER; 10501 10502 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 10503 &ipr_trace_attr); 10504 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj, 10505 &ipr_dump_attr); 10506 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj, 10507 &ipr_ioa_async_err_log); 10508 scsi_remove_host(ioa_cfg->host); 10509 10510 __ipr_remove(pdev); 10511 10512 LEAVE; 10513 } 10514 10515 /** 10516 * ipr_probe - Adapter hot plug add entry point 10517 * 10518 * Return value: 10519 * 0 on success / non-zero on failure 10520 **/ 10521 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) 10522 { 10523 struct ipr_ioa_cfg *ioa_cfg; 10524 unsigned long flags; 10525 int rc, i; 10526 10527 rc = ipr_probe_ioa(pdev, dev_id); 10528 10529 if (rc) 10530 return rc; 10531 10532 ioa_cfg = pci_get_drvdata(pdev); 10533 rc = ipr_probe_ioa_part2(ioa_cfg); 10534 10535 if (rc) { 10536 __ipr_remove(pdev); 10537 return rc; 10538 } 10539 10540 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 10541 10542 if (rc) { 10543 __ipr_remove(pdev); 10544 return rc; 10545 } 10546 10547 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj, 10548 &ipr_trace_attr); 10549 10550 if (rc) { 10551 scsi_remove_host(ioa_cfg->host); 10552 __ipr_remove(pdev); 10553 return rc; 10554 } 10555 10556 rc = sysfs_create_bin_file(&ioa_cfg->host->shost_dev.kobj, 10557 &ipr_ioa_async_err_log); 10558 10559 if (rc) { 10560 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj, 10561 &ipr_dump_attr); 10562 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 10563 &ipr_trace_attr); 10564 scsi_remove_host(ioa_cfg->host); 10565 __ipr_remove(pdev); 10566 return rc; 10567 } 10568 10569 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj, 10570 &ipr_dump_attr); 10571 10572 if (rc) { 10573 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj, 10574 &ipr_ioa_async_err_log); 10575 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 10576 &ipr_trace_attr); 10577 scsi_remove_host(ioa_cfg->host); 10578 __ipr_remove(pdev); 10579 return rc; 10580 } 10581 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 10582 ioa_cfg->scan_enabled = 1; 10583 schedule_work(&ioa_cfg->work_q); 10584 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 10585 10586 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight; 10587 10588 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 10589 for (i = 1; i < ioa_cfg->hrrq_num; i++) { 10590 irq_poll_init(&ioa_cfg->hrrq[i].iopoll, 10591 ioa_cfg->iopoll_weight, ipr_iopoll); 10592 } 10593 } 10594 10595 scsi_scan_host(ioa_cfg->host); 10596 10597 return 0; 10598 } 10599 10600 /** 10601 * ipr_shutdown - Shutdown handler. 10602 * @pdev: pci device struct 10603 * 10604 * This function is invoked upon system shutdown/reboot. It will issue 10605 * an adapter shutdown to the adapter to flush the write cache. 10606 * 10607 * Return value: 10608 * none 10609 **/ 10610 static void ipr_shutdown(struct pci_dev *pdev) 10611 { 10612 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 10613 unsigned long lock_flags = 0; 10614 enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL; 10615 int i; 10616 10617 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10618 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 10619 ioa_cfg->iopoll_weight = 0; 10620 for (i = 1; i < ioa_cfg->hrrq_num; i++) 10621 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll); 10622 } 10623 10624 while (ioa_cfg->in_reset_reload) { 10625 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10626 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 10627 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10628 } 10629 10630 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) 10631 shutdown_type = IPR_SHUTDOWN_QUIESCE; 10632 10633 ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type); 10634 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10635 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 10636 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) { 10637 ipr_free_irqs(ioa_cfg); 10638 pci_disable_device(ioa_cfg->pdev); 10639 } 10640 } 10641 10642 static struct pci_device_id ipr_pci_table[] = { 10643 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 10644 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 }, 10645 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 10646 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 }, 10647 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 10648 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 }, 10649 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 10650 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 }, 10651 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 10652 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 }, 10653 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 10654 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 }, 10655 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 10656 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 }, 10657 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 10658 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 10659 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10660 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 10661 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 10662 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 10663 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 10664 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10665 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 10666 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 10667 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10668 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 10669 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 10670 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 10671 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 10672 IPR_USE_LONG_TRANSOP_TIMEOUT}, 10673 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 10674 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 10675 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10676 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 10677 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 10678 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10679 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 10680 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 }, 10681 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 10682 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 }, 10683 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 10684 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 10685 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET }, 10686 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 10687 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 }, 10688 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 10689 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 }, 10690 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 10691 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 10692 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10693 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 10694 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 10695 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10696 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10697 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 }, 10698 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10699 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 }, 10700 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10701 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 }, 10702 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10703 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 }, 10704 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10705 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 }, 10706 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10707 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 }, 10708 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10709 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 }, 10710 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10711 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 }, 10712 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10713 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 }, 10714 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10715 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 }, 10716 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10717 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 }, 10718 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10719 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 }, 10720 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10721 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 }, 10722 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10723 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 }, 10724 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10725 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 }, 10726 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10727 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 }, 10728 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10729 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 }, 10730 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10731 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 }, 10732 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10733 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 }, 10734 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10735 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 }, 10736 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10737 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 }, 10738 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10739 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 }, 10740 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10741 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 }, 10742 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10743 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 }, 10744 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10745 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 }, 10746 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10747 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 }, 10748 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, 10749 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580A, 0, 0, 0 }, 10750 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, 10751 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580B, 0, 0, 0 }, 10752 { } 10753 }; 10754 MODULE_DEVICE_TABLE(pci, ipr_pci_table); 10755 10756 static const struct pci_error_handlers ipr_err_handler = { 10757 .error_detected = ipr_pci_error_detected, 10758 .mmio_enabled = ipr_pci_mmio_enabled, 10759 .slot_reset = ipr_pci_slot_reset, 10760 }; 10761 10762 static struct pci_driver ipr_driver = { 10763 .name = IPR_NAME, 10764 .id_table = ipr_pci_table, 10765 .probe = ipr_probe, 10766 .remove = ipr_remove, 10767 .shutdown = ipr_shutdown, 10768 .err_handler = &ipr_err_handler, 10769 }; 10770 10771 /** 10772 * ipr_halt_done - Shutdown prepare completion 10773 * 10774 * Return value: 10775 * none 10776 **/ 10777 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd) 10778 { 10779 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 10780 } 10781 10782 /** 10783 * ipr_halt - Issue shutdown prepare to all adapters 10784 * 10785 * Return value: 10786 * NOTIFY_OK on success / NOTIFY_DONE on failure 10787 **/ 10788 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf) 10789 { 10790 struct ipr_cmnd *ipr_cmd; 10791 struct ipr_ioa_cfg *ioa_cfg; 10792 unsigned long flags = 0, driver_lock_flags; 10793 10794 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF) 10795 return NOTIFY_DONE; 10796 10797 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); 10798 10799 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) { 10800 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 10801 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds || 10802 (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) { 10803 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 10804 continue; 10805 } 10806 10807 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 10808 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 10809 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 10810 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 10811 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 10812 10813 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 10814 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 10815 } 10816 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); 10817 10818 return NOTIFY_OK; 10819 } 10820 10821 static struct notifier_block ipr_notifier = { 10822 ipr_halt, NULL, 0 10823 }; 10824 10825 /** 10826 * ipr_init - Module entry point 10827 * 10828 * Return value: 10829 * 0 on success / negative value on failure 10830 **/ 10831 static int __init ipr_init(void) 10832 { 10833 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 10834 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 10835 10836 register_reboot_notifier(&ipr_notifier); 10837 return pci_register_driver(&ipr_driver); 10838 } 10839 10840 /** 10841 * ipr_exit - Module unload 10842 * 10843 * Module unload entry point. 10844 * 10845 * Return value: 10846 * none 10847 **/ 10848 static void __exit ipr_exit(void) 10849 { 10850 unregister_reboot_notifier(&ipr_notifier); 10851 pci_unregister_driver(&ipr_driver); 10852 } 10853 10854 module_init(ipr_init); 10855 module_exit(ipr_exit); 10856