1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * ipr.c -- driver for IBM Power Linux RAID adapters 4 * 5 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation 6 * 7 * Copyright (C) 2003, 2004 IBM Corporation 8 */ 9 10 /* 11 * Notes: 12 * 13 * This driver is used to control the following SCSI adapters: 14 * 15 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B 16 * 17 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter 18 * PCI-X Dual Channel Ultra 320 SCSI Adapter 19 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card 20 * Embedded SCSI adapter on p615 and p655 systems 21 * 22 * Supported Hardware Features: 23 * - Ultra 320 SCSI controller 24 * - PCI-X host interface 25 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine 26 * - Non-Volatile Write Cache 27 * - Supports attachment of non-RAID disks, tape, and optical devices 28 * - RAID Levels 0, 5, 10 29 * - Hot spare 30 * - Background Parity Checking 31 * - Background Data Scrubbing 32 * - Ability to increase the capacity of an existing RAID 5 disk array 33 * by adding disks 34 * 35 * Driver Features: 36 * - Tagged command queuing 37 * - Adapter microcode download 38 * - PCI hot plug 39 * - SCSI device hot plug 40 * 41 */ 42 43 #include <linux/fs.h> 44 #include <linux/init.h> 45 #include <linux/types.h> 46 #include <linux/errno.h> 47 #include <linux/kernel.h> 48 #include <linux/slab.h> 49 #include <linux/vmalloc.h> 50 #include <linux/ioport.h> 51 #include <linux/delay.h> 52 #include <linux/pci.h> 53 #include <linux/wait.h> 54 #include <linux/spinlock.h> 55 #include <linux/sched.h> 56 #include <linux/interrupt.h> 57 #include <linux/blkdev.h> 58 #include <linux/firmware.h> 59 #include <linux/module.h> 60 #include <linux/moduleparam.h> 61 #include <linux/libata.h> 62 #include <linux/hdreg.h> 63 #include <linux/reboot.h> 64 #include <linux/stringify.h> 65 #include <asm/io.h> 66 #include <asm/irq.h> 67 #include <asm/processor.h> 68 #include <scsi/scsi.h> 69 #include <scsi/scsi_host.h> 70 #include <scsi/scsi_tcq.h> 71 #include <scsi/scsi_eh.h> 72 #include <scsi/scsi_cmnd.h> 73 #include "ipr.h" 74 75 /* 76 * Global Data 77 */ 78 static LIST_HEAD(ipr_ioa_head); 79 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL; 80 static unsigned int ipr_max_speed = 1; 81 static int ipr_testmode = 0; 82 static unsigned int ipr_fastfail = 0; 83 static unsigned int ipr_transop_timeout = 0; 84 static unsigned int ipr_debug = 0; 85 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS; 86 static unsigned int ipr_dual_ioa_raid = 1; 87 static unsigned int ipr_number_of_msix = 16; 88 static unsigned int ipr_fast_reboot; 89 static DEFINE_SPINLOCK(ipr_driver_lock); 90 91 /* This table describes the differences between DMA controller chips */ 92 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { 93 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */ 94 .mailbox = 0x0042C, 95 .max_cmds = 100, 96 .cache_line_size = 0x20, 97 .clear_isr = 1, 98 .iopoll_weight = 0, 99 { 100 .set_interrupt_mask_reg = 0x0022C, 101 .clr_interrupt_mask_reg = 0x00230, 102 .clr_interrupt_mask_reg32 = 0x00230, 103 .sense_interrupt_mask_reg = 0x0022C, 104 .sense_interrupt_mask_reg32 = 0x0022C, 105 .clr_interrupt_reg = 0x00228, 106 .clr_interrupt_reg32 = 0x00228, 107 .sense_interrupt_reg = 0x00224, 108 .sense_interrupt_reg32 = 0x00224, 109 .ioarrin_reg = 0x00404, 110 .sense_uproc_interrupt_reg = 0x00214, 111 .sense_uproc_interrupt_reg32 = 0x00214, 112 .set_uproc_interrupt_reg = 0x00214, 113 .set_uproc_interrupt_reg32 = 0x00214, 114 .clr_uproc_interrupt_reg = 0x00218, 115 .clr_uproc_interrupt_reg32 = 0x00218 116 } 117 }, 118 { /* Snipe and Scamp */ 119 .mailbox = 0x0052C, 120 .max_cmds = 100, 121 .cache_line_size = 0x20, 122 .clear_isr = 1, 123 .iopoll_weight = 0, 124 { 125 .set_interrupt_mask_reg = 0x00288, 126 .clr_interrupt_mask_reg = 0x0028C, 127 .clr_interrupt_mask_reg32 = 0x0028C, 128 .sense_interrupt_mask_reg = 0x00288, 129 .sense_interrupt_mask_reg32 = 0x00288, 130 .clr_interrupt_reg = 0x00284, 131 .clr_interrupt_reg32 = 0x00284, 132 .sense_interrupt_reg = 0x00280, 133 .sense_interrupt_reg32 = 0x00280, 134 .ioarrin_reg = 0x00504, 135 .sense_uproc_interrupt_reg = 0x00290, 136 .sense_uproc_interrupt_reg32 = 0x00290, 137 .set_uproc_interrupt_reg = 0x00290, 138 .set_uproc_interrupt_reg32 = 0x00290, 139 .clr_uproc_interrupt_reg = 0x00294, 140 .clr_uproc_interrupt_reg32 = 0x00294 141 } 142 }, 143 { /* CRoC */ 144 .mailbox = 0x00044, 145 .max_cmds = 1000, 146 .cache_line_size = 0x20, 147 .clear_isr = 0, 148 .iopoll_weight = 64, 149 { 150 .set_interrupt_mask_reg = 0x00010, 151 .clr_interrupt_mask_reg = 0x00018, 152 .clr_interrupt_mask_reg32 = 0x0001C, 153 .sense_interrupt_mask_reg = 0x00010, 154 .sense_interrupt_mask_reg32 = 0x00014, 155 .clr_interrupt_reg = 0x00008, 156 .clr_interrupt_reg32 = 0x0000C, 157 .sense_interrupt_reg = 0x00000, 158 .sense_interrupt_reg32 = 0x00004, 159 .ioarrin_reg = 0x00070, 160 .sense_uproc_interrupt_reg = 0x00020, 161 .sense_uproc_interrupt_reg32 = 0x00024, 162 .set_uproc_interrupt_reg = 0x00020, 163 .set_uproc_interrupt_reg32 = 0x00024, 164 .clr_uproc_interrupt_reg = 0x00028, 165 .clr_uproc_interrupt_reg32 = 0x0002C, 166 .init_feedback_reg = 0x0005C, 167 .dump_addr_reg = 0x00064, 168 .dump_data_reg = 0x00068, 169 .endian_swap_reg = 0x00084 170 } 171 }, 172 }; 173 174 static const struct ipr_chip_t ipr_chip[] = { 175 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 176 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 177 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 178 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 179 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, true, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 180 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] }, 181 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] }, 182 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }, 183 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }, 184 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] } 185 }; 186 187 static int ipr_max_bus_speeds[] = { 188 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE 189 }; 190 191 MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); 192 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); 193 module_param_named(max_speed, ipr_max_speed, uint, 0); 194 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); 195 module_param_named(log_level, ipr_log_level, uint, 0); 196 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); 197 module_param_named(testmode, ipr_testmode, int, 0); 198 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); 199 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR); 200 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); 201 module_param_named(transop_timeout, ipr_transop_timeout, int, 0); 202 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); 203 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR); 204 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)"); 205 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0); 206 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)"); 207 module_param_named(max_devs, ipr_max_devs, int, 0); 208 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. " 209 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]"); 210 module_param_named(number_of_msix, ipr_number_of_msix, int, 0); 211 MODULE_PARM_DESC(number_of_msix, "Specify the number of MSIX interrupts to use on capable adapters (1 - 16). (default:16)"); 212 module_param_named(fast_reboot, ipr_fast_reboot, int, S_IRUGO | S_IWUSR); 213 MODULE_PARM_DESC(fast_reboot, "Skip adapter shutdown during reboot. Set to 1 to enable. (default: 0)"); 214 MODULE_LICENSE("GPL"); 215 MODULE_VERSION(IPR_DRIVER_VERSION); 216 217 /* A constant array of IOASCs/URCs/Error Messages */ 218 static const 219 struct ipr_error_table_t ipr_error_table[] = { 220 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL, 221 "8155: An unknown error was received"}, 222 {0x00330000, 0, 0, 223 "Soft underlength error"}, 224 {0x005A0000, 0, 0, 225 "Command to be cancelled not found"}, 226 {0x00808000, 0, 0, 227 "Qualified success"}, 228 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL, 229 "FFFE: Soft device bus error recovered by the IOA"}, 230 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL, 231 "4101: Soft device bus fabric error"}, 232 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL, 233 "FFFC: Logical block guard error recovered by the device"}, 234 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL, 235 "FFFC: Logical block reference tag error recovered by the device"}, 236 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL, 237 "4171: Recovered scatter list tag / sequence number error"}, 238 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL, 239 "FF3D: Recovered logical block CRC error on IOA to Host transfer"}, 240 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL, 241 "4171: Recovered logical block sequence number error on IOA to Host transfer"}, 242 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL, 243 "FFFD: Recovered logical block reference tag error detected by the IOA"}, 244 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL, 245 "FFFD: Logical block guard error recovered by the IOA"}, 246 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL, 247 "FFF9: Device sector reassign successful"}, 248 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL, 249 "FFF7: Media error recovered by device rewrite procedures"}, 250 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL, 251 "7001: IOA sector reassignment successful"}, 252 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL, 253 "FFF9: Soft media error. Sector reassignment recommended"}, 254 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL, 255 "FFF7: Media error recovered by IOA rewrite procedures"}, 256 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL, 257 "FF3D: Soft PCI bus error recovered by the IOA"}, 258 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL, 259 "FFF6: Device hardware error recovered by the IOA"}, 260 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL, 261 "FFF6: Device hardware error recovered by the device"}, 262 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL, 263 "FF3D: Soft IOA error recovered by the IOA"}, 264 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL, 265 "FFFA: Undefined device response recovered by the IOA"}, 266 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL, 267 "FFF6: Device bus error, message or command phase"}, 268 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL, 269 "FFFE: Task Management Function failed"}, 270 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL, 271 "FFF6: Failure prediction threshold exceeded"}, 272 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL, 273 "8009: Impending cache battery pack failure"}, 274 {0x02040100, 0, 0, 275 "Logical Unit in process of becoming ready"}, 276 {0x02040200, 0, 0, 277 "Initializing command required"}, 278 {0x02040400, 0, 0, 279 "34FF: Disk device format in progress"}, 280 {0x02040C00, 0, 0, 281 "Logical unit not accessible, target port in unavailable state"}, 282 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL, 283 "9070: IOA requested reset"}, 284 {0x023F0000, 0, 0, 285 "Synchronization required"}, 286 {0x02408500, 0, 0, 287 "IOA microcode download required"}, 288 {0x02408600, 0, 0, 289 "Device bus connection is prohibited by host"}, 290 {0x024E0000, 0, 0, 291 "No ready, IOA shutdown"}, 292 {0x025A0000, 0, 0, 293 "Not ready, IOA has been shutdown"}, 294 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL, 295 "3020: Storage subsystem configuration error"}, 296 {0x03110B00, 0, 0, 297 "FFF5: Medium error, data unreadable, recommend reassign"}, 298 {0x03110C00, 0, 0, 299 "7000: Medium error, data unreadable, do not reassign"}, 300 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL, 301 "FFF3: Disk media format bad"}, 302 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL, 303 "3002: Addressed device failed to respond to selection"}, 304 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL, 305 "3100: Device bus error"}, 306 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL, 307 "3109: IOA timed out a device command"}, 308 {0x04088000, 0, 0, 309 "3120: SCSI bus is not operational"}, 310 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL, 311 "4100: Hard device bus fabric error"}, 312 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL, 313 "310C: Logical block guard error detected by the device"}, 314 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL, 315 "310C: Logical block reference tag error detected by the device"}, 316 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL, 317 "4170: Scatter list tag / sequence number error"}, 318 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL, 319 "8150: Logical block CRC error on IOA to Host transfer"}, 320 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL, 321 "4170: Logical block sequence number error on IOA to Host transfer"}, 322 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL, 323 "310D: Logical block reference tag error detected by the IOA"}, 324 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL, 325 "310D: Logical block guard error detected by the IOA"}, 326 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL, 327 "9000: IOA reserved area data check"}, 328 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL, 329 "9001: IOA reserved area invalid data pattern"}, 330 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL, 331 "9002: IOA reserved area LRC error"}, 332 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL, 333 "Hardware Error, IOA metadata access error"}, 334 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL, 335 "102E: Out of alternate sectors for disk storage"}, 336 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL, 337 "FFF4: Data transfer underlength error"}, 338 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL, 339 "FFF4: Data transfer overlength error"}, 340 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL, 341 "3400: Logical unit failure"}, 342 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL, 343 "FFF4: Device microcode is corrupt"}, 344 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL, 345 "8150: PCI bus error"}, 346 {0x04430000, 1, 0, 347 "Unsupported device bus message received"}, 348 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL, 349 "FFF4: Disk device problem"}, 350 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL, 351 "8150: Permanent IOA failure"}, 352 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL, 353 "3010: Disk device returned wrong response to IOA"}, 354 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL, 355 "8151: IOA microcode error"}, 356 {0x04448500, 0, 0, 357 "Device bus status error"}, 358 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL, 359 "8157: IOA error requiring IOA reset to recover"}, 360 {0x04448700, 0, 0, 361 "ATA device status error"}, 362 {0x04490000, 0, 0, 363 "Message reject received from the device"}, 364 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL, 365 "8008: A permanent cache battery pack failure occurred"}, 366 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL, 367 "9090: Disk unit has been modified after the last known status"}, 368 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL, 369 "9081: IOA detected device error"}, 370 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL, 371 "9082: IOA detected device error"}, 372 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL, 373 "3110: Device bus error, message or command phase"}, 374 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL, 375 "3110: SAS Command / Task Management Function failed"}, 376 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL, 377 "9091: Incorrect hardware configuration change has been detected"}, 378 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL, 379 "9073: Invalid multi-adapter configuration"}, 380 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL, 381 "4010: Incorrect connection between cascaded expanders"}, 382 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL, 383 "4020: Connections exceed IOA design limits"}, 384 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL, 385 "4030: Incorrect multipath connection"}, 386 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL, 387 "4110: Unsupported enclosure function"}, 388 {0x04679800, 0, IPR_DEFAULT_LOG_LEVEL, 389 "4120: SAS cable VPD cannot be read"}, 390 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL, 391 "FFF4: Command to logical unit failed"}, 392 {0x05240000, 1, 0, 393 "Illegal request, invalid request type or request packet"}, 394 {0x05250000, 0, 0, 395 "Illegal request, invalid resource handle"}, 396 {0x05258000, 0, 0, 397 "Illegal request, commands not allowed to this device"}, 398 {0x05258100, 0, 0, 399 "Illegal request, command not allowed to a secondary adapter"}, 400 {0x05258200, 0, 0, 401 "Illegal request, command not allowed to a non-optimized resource"}, 402 {0x05260000, 0, 0, 403 "Illegal request, invalid field in parameter list"}, 404 {0x05260100, 0, 0, 405 "Illegal request, parameter not supported"}, 406 {0x05260200, 0, 0, 407 "Illegal request, parameter value invalid"}, 408 {0x052C0000, 0, 0, 409 "Illegal request, command sequence error"}, 410 {0x052C8000, 1, 0, 411 "Illegal request, dual adapter support not enabled"}, 412 {0x052C8100, 1, 0, 413 "Illegal request, another cable connector was physically disabled"}, 414 {0x054E8000, 1, 0, 415 "Illegal request, inconsistent group id/group count"}, 416 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL, 417 "9031: Array protection temporarily suspended, protection resuming"}, 418 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL, 419 "9040: Array protection temporarily suspended, protection resuming"}, 420 {0x060B0100, 0, IPR_DEFAULT_LOG_LEVEL, 421 "4080: IOA exceeded maximum operating temperature"}, 422 {0x060B8000, 0, IPR_DEFAULT_LOG_LEVEL, 423 "4085: Service required"}, 424 {0x060B8100, 0, IPR_DEFAULT_LOG_LEVEL, 425 "4086: SAS Adapter Hardware Configuration Error"}, 426 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL, 427 "3140: Device bus not ready to ready transition"}, 428 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL, 429 "FFFB: SCSI bus was reset"}, 430 {0x06290500, 0, 0, 431 "FFFE: SCSI bus transition to single ended"}, 432 {0x06290600, 0, 0, 433 "FFFE: SCSI bus transition to LVD"}, 434 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL, 435 "FFFB: SCSI bus was reset by another initiator"}, 436 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL, 437 "3029: A device replacement has occurred"}, 438 {0x063F8300, 0, IPR_DEFAULT_LOG_LEVEL, 439 "4102: Device bus fabric performance degradation"}, 440 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL, 441 "9051: IOA cache data exists for a missing or failed device"}, 442 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL, 443 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"}, 444 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL, 445 "9025: Disk unit is not supported at its physical location"}, 446 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL, 447 "3020: IOA detected a SCSI bus configuration error"}, 448 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL, 449 "3150: SCSI bus configuration error"}, 450 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL, 451 "9074: Asymmetric advanced function disk configuration"}, 452 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL, 453 "4040: Incomplete multipath connection between IOA and enclosure"}, 454 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL, 455 "4041: Incomplete multipath connection between enclosure and device"}, 456 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL, 457 "9075: Incomplete multipath connection between IOA and remote IOA"}, 458 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL, 459 "9076: Configuration error, missing remote IOA"}, 460 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL, 461 "4050: Enclosure does not support a required multipath function"}, 462 {0x06679800, 0, IPR_DEFAULT_LOG_LEVEL, 463 "4121: Configuration error, required cable is missing"}, 464 {0x06679900, 0, IPR_DEFAULT_LOG_LEVEL, 465 "4122: Cable is not plugged into the correct location on remote IOA"}, 466 {0x06679A00, 0, IPR_DEFAULT_LOG_LEVEL, 467 "4123: Configuration error, invalid cable vital product data"}, 468 {0x06679B00, 0, IPR_DEFAULT_LOG_LEVEL, 469 "4124: Configuration error, both cable ends are plugged into the same IOA"}, 470 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL, 471 "4070: Logically bad block written on device"}, 472 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL, 473 "9041: Array protection temporarily suspended"}, 474 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL, 475 "9042: Corrupt array parity detected on specified device"}, 476 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL, 477 "9030: Array no longer protected due to missing or failed disk unit"}, 478 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL, 479 "9071: Link operational transition"}, 480 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL, 481 "9072: Link not operational transition"}, 482 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL, 483 "9032: Array exposed but still protected"}, 484 {0x066B8300, 0, IPR_DEBUG_LOG_LEVEL, 485 "70DD: Device forced failed by disrupt device command"}, 486 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL, 487 "4061: Multipath redundancy level got better"}, 488 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL, 489 "4060: Multipath redundancy level got worse"}, 490 {0x06808100, 0, IPR_DEBUG_LOG_LEVEL, 491 "9083: Device raw mode enabled"}, 492 {0x06808200, 0, IPR_DEBUG_LOG_LEVEL, 493 "9084: Device raw mode disabled"}, 494 {0x07270000, 0, 0, 495 "Failure due to other device"}, 496 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL, 497 "9008: IOA does not support functions expected by devices"}, 498 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL, 499 "9010: Cache data associated with attached devices cannot be found"}, 500 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL, 501 "9011: Cache data belongs to devices other than those attached"}, 502 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL, 503 "9020: Array missing 2 or more devices with only 1 device present"}, 504 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL, 505 "9021: Array missing 2 or more devices with 2 or more devices present"}, 506 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL, 507 "9022: Exposed array is missing a required device"}, 508 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL, 509 "9023: Array member(s) not at required physical locations"}, 510 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL, 511 "9024: Array not functional due to present hardware configuration"}, 512 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL, 513 "9026: Array not functional due to present hardware configuration"}, 514 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL, 515 "9027: Array is missing a device and parity is out of sync"}, 516 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL, 517 "9028: Maximum number of arrays already exist"}, 518 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL, 519 "9050: Required cache data cannot be located for a disk unit"}, 520 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL, 521 "9052: Cache data exists for a device that has been modified"}, 522 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL, 523 "9054: IOA resources not available due to previous problems"}, 524 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL, 525 "9092: Disk unit requires initialization before use"}, 526 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL, 527 "9029: Incorrect hardware configuration change has been detected"}, 528 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL, 529 "9060: One or more disk pairs are missing from an array"}, 530 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL, 531 "9061: One or more disks are missing from an array"}, 532 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL, 533 "9062: One or more disks are missing from an array"}, 534 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL, 535 "9063: Maximum number of functional arrays has been exceeded"}, 536 {0x07279A00, 0, 0, 537 "Data protect, other volume set problem"}, 538 {0x0B260000, 0, 0, 539 "Aborted command, invalid descriptor"}, 540 {0x0B3F9000, 0, 0, 541 "Target operating conditions have changed, dual adapter takeover"}, 542 {0x0B530200, 0, 0, 543 "Aborted command, medium removal prevented"}, 544 {0x0B5A0000, 0, 0, 545 "Command terminated by host"}, 546 {0x0B5B8000, 0, 0, 547 "Aborted command, command terminated by host"} 548 }; 549 550 static const struct ipr_ses_table_entry ipr_ses_table[] = { 551 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, 552 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, 553 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ 554 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ 555 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ 556 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ 557 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, 558 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, 559 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 560 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 561 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, 562 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, 563 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } 564 }; 565 566 /* 567 * Function Prototypes 568 */ 569 static int ipr_reset_alert(struct ipr_cmnd *); 570 static void ipr_process_ccn(struct ipr_cmnd *); 571 static void ipr_process_error(struct ipr_cmnd *); 572 static void ipr_reset_ioa_job(struct ipr_cmnd *); 573 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, 574 enum ipr_shutdown_type); 575 576 #ifdef CONFIG_SCSI_IPR_TRACE 577 /** 578 * ipr_trc_hook - Add a trace entry to the driver trace 579 * @ipr_cmd: ipr command struct 580 * @type: trace type 581 * @add_data: additional data 582 * 583 * Return value: 584 * none 585 **/ 586 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, 587 u8 type, u32 add_data) 588 { 589 struct ipr_trace_entry *trace_entry; 590 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 591 unsigned int trace_index; 592 593 trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK; 594 trace_entry = &ioa_cfg->trace[trace_index]; 595 trace_entry->time = jiffies; 596 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; 597 trace_entry->type = type; 598 if (ipr_cmd->ioa_cfg->sis64) 599 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command; 600 else 601 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command; 602 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff; 603 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; 604 trace_entry->u.add_data = add_data; 605 wmb(); 606 } 607 #else 608 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0) 609 #endif 610 611 /** 612 * ipr_lock_and_done - Acquire lock and complete command 613 * @ipr_cmd: ipr command struct 614 * 615 * Return value: 616 * none 617 **/ 618 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd) 619 { 620 unsigned long lock_flags; 621 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 622 623 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 624 ipr_cmd->done(ipr_cmd); 625 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 626 } 627 628 /** 629 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse 630 * @ipr_cmd: ipr command struct 631 * 632 * Return value: 633 * none 634 **/ 635 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 636 { 637 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 638 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 639 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64; 640 dma_addr_t dma_addr = ipr_cmd->dma_addr; 641 int hrrq_id; 642 643 hrrq_id = ioarcb->cmd_pkt.hrrq_id; 644 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 645 ioarcb->cmd_pkt.hrrq_id = hrrq_id; 646 ioarcb->data_transfer_length = 0; 647 ioarcb->read_data_transfer_length = 0; 648 ioarcb->ioadl_len = 0; 649 ioarcb->read_ioadl_len = 0; 650 651 if (ipr_cmd->ioa_cfg->sis64) { 652 ioarcb->u.sis64_addr_data.data_ioadl_addr = 653 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 654 ioasa64->u.gata.status = 0; 655 } else { 656 ioarcb->write_ioadl_addr = 657 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 658 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 659 ioasa->u.gata.status = 0; 660 } 661 662 ioasa->hdr.ioasc = 0; 663 ioasa->hdr.residual_data_len = 0; 664 ipr_cmd->scsi_cmd = NULL; 665 ipr_cmd->qc = NULL; 666 ipr_cmd->sense_buffer[0] = 0; 667 ipr_cmd->dma_use_sg = 0; 668 } 669 670 /** 671 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block 672 * @ipr_cmd: ipr command struct 673 * @fast_done: fast done function call-back 674 * 675 * Return value: 676 * none 677 **/ 678 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd, 679 void (*fast_done) (struct ipr_cmnd *)) 680 { 681 ipr_reinit_ipr_cmnd(ipr_cmd); 682 ipr_cmd->u.scratch = 0; 683 ipr_cmd->sibling = NULL; 684 ipr_cmd->eh_comp = NULL; 685 ipr_cmd->fast_done = fast_done; 686 timer_setup(&ipr_cmd->timer, NULL, 0); 687 } 688 689 /** 690 * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block 691 * @hrrq: hrr queue 692 * 693 * Return value: 694 * pointer to ipr command struct 695 **/ 696 static 697 struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue *hrrq) 698 { 699 struct ipr_cmnd *ipr_cmd = NULL; 700 701 if (likely(!list_empty(&hrrq->hrrq_free_q))) { 702 ipr_cmd = list_entry(hrrq->hrrq_free_q.next, 703 struct ipr_cmnd, queue); 704 list_del(&ipr_cmd->queue); 705 } 706 707 708 return ipr_cmd; 709 } 710 711 /** 712 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it 713 * @ioa_cfg: ioa config struct 714 * 715 * Return value: 716 * pointer to ipr command struct 717 **/ 718 static 719 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) 720 { 721 struct ipr_cmnd *ipr_cmd = 722 __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]); 723 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done); 724 return ipr_cmd; 725 } 726 727 /** 728 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts 729 * @ioa_cfg: ioa config struct 730 * @clr_ints: interrupts to clear 731 * 732 * This function masks all interrupts on the adapter, then clears the 733 * interrupts specified in the mask 734 * 735 * Return value: 736 * none 737 **/ 738 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, 739 u32 clr_ints) 740 { 741 int i; 742 743 /* Stop new interrupts */ 744 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 745 spin_lock(&ioa_cfg->hrrq[i]._lock); 746 ioa_cfg->hrrq[i].allow_interrupts = 0; 747 spin_unlock(&ioa_cfg->hrrq[i]._lock); 748 } 749 750 /* Set interrupt mask to stop all new interrupts */ 751 if (ioa_cfg->sis64) 752 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg); 753 else 754 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); 755 756 /* Clear any pending interrupts */ 757 if (ioa_cfg->sis64) 758 writel(~0, ioa_cfg->regs.clr_interrupt_reg); 759 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32); 760 readl(ioa_cfg->regs.sense_interrupt_reg); 761 } 762 763 /** 764 * ipr_save_pcix_cmd_reg - Save PCI-X command register 765 * @ioa_cfg: ioa config struct 766 * 767 * Return value: 768 * 0 on success / -EIO on failure 769 **/ 770 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 771 { 772 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 773 774 if (pcix_cmd_reg == 0) 775 return 0; 776 777 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 778 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 779 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 780 return -EIO; 781 } 782 783 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; 784 return 0; 785 } 786 787 /** 788 * ipr_set_pcix_cmd_reg - Setup PCI-X command register 789 * @ioa_cfg: ioa config struct 790 * 791 * Return value: 792 * 0 on success / -EIO on failure 793 **/ 794 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 795 { 796 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 797 798 if (pcix_cmd_reg) { 799 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 800 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 801 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); 802 return -EIO; 803 } 804 } 805 806 return 0; 807 } 808 809 /** 810 * __ipr_sata_eh_done - done function for aborted SATA commands 811 * @ipr_cmd: ipr command struct 812 * 813 * This function is invoked for ops generated to SATA 814 * devices which are being aborted. 815 * 816 * Return value: 817 * none 818 **/ 819 static void __ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd) 820 { 821 struct ata_queued_cmd *qc = ipr_cmd->qc; 822 struct ipr_sata_port *sata_port = qc->ap->private_data; 823 824 qc->err_mask |= AC_ERR_OTHER; 825 sata_port->ioasa.status |= ATA_BUSY; 826 ata_qc_complete(qc); 827 if (ipr_cmd->eh_comp) 828 complete(ipr_cmd->eh_comp); 829 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 830 } 831 832 /** 833 * ipr_sata_eh_done - done function for aborted SATA commands 834 * @ipr_cmd: ipr command struct 835 * 836 * This function is invoked for ops generated to SATA 837 * devices which are being aborted. 838 * 839 * Return value: 840 * none 841 **/ 842 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd) 843 { 844 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq; 845 unsigned long hrrq_flags; 846 847 spin_lock_irqsave(&hrrq->_lock, hrrq_flags); 848 __ipr_sata_eh_done(ipr_cmd); 849 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags); 850 } 851 852 /** 853 * __ipr_scsi_eh_done - mid-layer done function for aborted ops 854 * @ipr_cmd: ipr command struct 855 * 856 * This function is invoked by the interrupt handler for 857 * ops generated by the SCSI mid-layer which are being aborted. 858 * 859 * Return value: 860 * none 861 **/ 862 static void __ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 863 { 864 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 865 866 scsi_cmd->result |= (DID_ERROR << 16); 867 868 scsi_dma_unmap(ipr_cmd->scsi_cmd); 869 scsi_done(scsi_cmd); 870 if (ipr_cmd->eh_comp) 871 complete(ipr_cmd->eh_comp); 872 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 873 } 874 875 /** 876 * ipr_scsi_eh_done - mid-layer done function for aborted ops 877 * @ipr_cmd: ipr command struct 878 * 879 * This function is invoked by the interrupt handler for 880 * ops generated by the SCSI mid-layer which are being aborted. 881 * 882 * Return value: 883 * none 884 **/ 885 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 886 { 887 unsigned long hrrq_flags; 888 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq; 889 890 spin_lock_irqsave(&hrrq->_lock, hrrq_flags); 891 __ipr_scsi_eh_done(ipr_cmd); 892 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags); 893 } 894 895 /** 896 * ipr_fail_all_ops - Fails all outstanding ops. 897 * @ioa_cfg: ioa config struct 898 * 899 * This function fails all outstanding ops. 900 * 901 * Return value: 902 * none 903 **/ 904 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) 905 { 906 struct ipr_cmnd *ipr_cmd, *temp; 907 struct ipr_hrr_queue *hrrq; 908 909 ENTER; 910 for_each_hrrq(hrrq, ioa_cfg) { 911 spin_lock(&hrrq->_lock); 912 list_for_each_entry_safe(ipr_cmd, 913 temp, &hrrq->hrrq_pending_q, queue) { 914 list_del(&ipr_cmd->queue); 915 916 ipr_cmd->s.ioasa.hdr.ioasc = 917 cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); 918 ipr_cmd->s.ioasa.hdr.ilid = 919 cpu_to_be32(IPR_DRIVER_ILID); 920 921 if (ipr_cmd->scsi_cmd) 922 ipr_cmd->done = __ipr_scsi_eh_done; 923 else if (ipr_cmd->qc) 924 ipr_cmd->done = __ipr_sata_eh_done; 925 926 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, 927 IPR_IOASC_IOA_WAS_RESET); 928 del_timer(&ipr_cmd->timer); 929 ipr_cmd->done(ipr_cmd); 930 } 931 spin_unlock(&hrrq->_lock); 932 } 933 LEAVE; 934 } 935 936 /** 937 * ipr_send_command - Send driver initiated requests. 938 * @ipr_cmd: ipr command struct 939 * 940 * This function sends a command to the adapter using the correct write call. 941 * In the case of sis64, calculate the ioarcb size required. Then or in the 942 * appropriate bits. 943 * 944 * Return value: 945 * none 946 **/ 947 static void ipr_send_command(struct ipr_cmnd *ipr_cmd) 948 { 949 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 950 dma_addr_t send_dma_addr = ipr_cmd->dma_addr; 951 952 if (ioa_cfg->sis64) { 953 /* The default size is 256 bytes */ 954 send_dma_addr |= 0x1; 955 956 /* If the number of ioadls * size of ioadl > 128 bytes, 957 then use a 512 byte ioarcb */ 958 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 ) 959 send_dma_addr |= 0x4; 960 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg); 961 } else 962 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg); 963 } 964 965 /** 966 * ipr_do_req - Send driver initiated requests. 967 * @ipr_cmd: ipr command struct 968 * @done: done function 969 * @timeout_func: timeout function 970 * @timeout: timeout value 971 * 972 * This function sends the specified command to the adapter with the 973 * timeout given. The done function is invoked on command completion. 974 * 975 * Return value: 976 * none 977 **/ 978 static void ipr_do_req(struct ipr_cmnd *ipr_cmd, 979 void (*done) (struct ipr_cmnd *), 980 void (*timeout_func) (struct timer_list *), u32 timeout) 981 { 982 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 983 984 ipr_cmd->done = done; 985 986 ipr_cmd->timer.expires = jiffies + timeout; 987 ipr_cmd->timer.function = timeout_func; 988 989 add_timer(&ipr_cmd->timer); 990 991 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); 992 993 ipr_send_command(ipr_cmd); 994 } 995 996 /** 997 * ipr_internal_cmd_done - Op done function for an internally generated op. 998 * @ipr_cmd: ipr command struct 999 * 1000 * This function is the op done function for an internally generated, 1001 * blocking op. It simply wakes the sleeping thread. 1002 * 1003 * Return value: 1004 * none 1005 **/ 1006 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) 1007 { 1008 if (ipr_cmd->sibling) 1009 ipr_cmd->sibling = NULL; 1010 else 1011 complete(&ipr_cmd->completion); 1012 } 1013 1014 /** 1015 * ipr_init_ioadl - initialize the ioadl for the correct SIS type 1016 * @ipr_cmd: ipr command struct 1017 * @dma_addr: dma address 1018 * @len: transfer length 1019 * @flags: ioadl flag value 1020 * 1021 * This function initializes an ioadl in the case where there is only a single 1022 * descriptor. 1023 * 1024 * Return value: 1025 * nothing 1026 **/ 1027 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr, 1028 u32 len, int flags) 1029 { 1030 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 1031 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 1032 1033 ipr_cmd->dma_use_sg = 1; 1034 1035 if (ipr_cmd->ioa_cfg->sis64) { 1036 ioadl64->flags = cpu_to_be32(flags); 1037 ioadl64->data_len = cpu_to_be32(len); 1038 ioadl64->address = cpu_to_be64(dma_addr); 1039 1040 ipr_cmd->ioarcb.ioadl_len = 1041 cpu_to_be32(sizeof(struct ipr_ioadl64_desc)); 1042 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len); 1043 } else { 1044 ioadl->flags_and_data_len = cpu_to_be32(flags | len); 1045 ioadl->address = cpu_to_be32(dma_addr); 1046 1047 if (flags == IPR_IOADL_FLAGS_READ_LAST) { 1048 ipr_cmd->ioarcb.read_ioadl_len = 1049 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 1050 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len); 1051 } else { 1052 ipr_cmd->ioarcb.ioadl_len = 1053 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 1054 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len); 1055 } 1056 } 1057 } 1058 1059 /** 1060 * ipr_send_blocking_cmd - Send command and sleep on its completion. 1061 * @ipr_cmd: ipr command struct 1062 * @timeout_func: function to invoke if command times out 1063 * @timeout: timeout 1064 * 1065 * Return value: 1066 * none 1067 **/ 1068 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, 1069 void (*timeout_func) (struct timer_list *), 1070 u32 timeout) 1071 { 1072 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1073 1074 init_completion(&ipr_cmd->completion); 1075 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); 1076 1077 spin_unlock_irq(ioa_cfg->host->host_lock); 1078 wait_for_completion(&ipr_cmd->completion); 1079 spin_lock_irq(ioa_cfg->host->host_lock); 1080 } 1081 1082 static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg) 1083 { 1084 unsigned int hrrq; 1085 1086 if (ioa_cfg->hrrq_num == 1) 1087 hrrq = 0; 1088 else { 1089 hrrq = atomic_add_return(1, &ioa_cfg->hrrq_index); 1090 hrrq = (hrrq % (ioa_cfg->hrrq_num - 1)) + 1; 1091 } 1092 return hrrq; 1093 } 1094 1095 /** 1096 * ipr_send_hcam - Send an HCAM to the adapter. 1097 * @ioa_cfg: ioa config struct 1098 * @type: HCAM type 1099 * @hostrcb: hostrcb struct 1100 * 1101 * This function will send a Host Controlled Async command to the adapter. 1102 * If HCAMs are currently not allowed to be issued to the adapter, it will 1103 * place the hostrcb on the free queue. 1104 * 1105 * Return value: 1106 * none 1107 **/ 1108 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, 1109 struct ipr_hostrcb *hostrcb) 1110 { 1111 struct ipr_cmnd *ipr_cmd; 1112 struct ipr_ioarcb *ioarcb; 1113 1114 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) { 1115 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 1116 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 1117 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); 1118 1119 ipr_cmd->u.hostrcb = hostrcb; 1120 ioarcb = &ipr_cmd->ioarcb; 1121 1122 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 1123 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; 1124 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; 1125 ioarcb->cmd_pkt.cdb[1] = type; 1126 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; 1127 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; 1128 1129 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma, 1130 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST); 1131 1132 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) 1133 ipr_cmd->done = ipr_process_ccn; 1134 else 1135 ipr_cmd->done = ipr_process_error; 1136 1137 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); 1138 1139 ipr_send_command(ipr_cmd); 1140 } else { 1141 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 1142 } 1143 } 1144 1145 /** 1146 * ipr_update_ata_class - Update the ata class in the resource entry 1147 * @res: resource entry struct 1148 * @proto: cfgte device bus protocol value 1149 * 1150 * Return value: 1151 * none 1152 **/ 1153 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto) 1154 { 1155 switch (proto) { 1156 case IPR_PROTO_SATA: 1157 case IPR_PROTO_SAS_STP: 1158 res->ata_class = ATA_DEV_ATA; 1159 break; 1160 case IPR_PROTO_SATA_ATAPI: 1161 case IPR_PROTO_SAS_STP_ATAPI: 1162 res->ata_class = ATA_DEV_ATAPI; 1163 break; 1164 default: 1165 res->ata_class = ATA_DEV_UNKNOWN; 1166 break; 1167 } 1168 } 1169 1170 /** 1171 * ipr_init_res_entry - Initialize a resource entry struct. 1172 * @res: resource entry struct 1173 * @cfgtew: config table entry wrapper struct 1174 * 1175 * Return value: 1176 * none 1177 **/ 1178 static void ipr_init_res_entry(struct ipr_resource_entry *res, 1179 struct ipr_config_table_entry_wrapper *cfgtew) 1180 { 1181 int found = 0; 1182 unsigned int proto; 1183 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg; 1184 struct ipr_resource_entry *gscsi_res = NULL; 1185 1186 res->needs_sync_complete = 0; 1187 res->in_erp = 0; 1188 res->add_to_ml = 0; 1189 res->del_from_ml = 0; 1190 res->resetting_device = 0; 1191 res->reset_occurred = 0; 1192 res->sdev = NULL; 1193 res->sata_port = NULL; 1194 1195 if (ioa_cfg->sis64) { 1196 proto = cfgtew->u.cfgte64->proto; 1197 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags); 1198 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags); 1199 res->qmodel = IPR_QUEUEING_MODEL64(res); 1200 res->type = cfgtew->u.cfgte64->res_type; 1201 1202 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path, 1203 sizeof(res->res_path)); 1204 1205 res->bus = 0; 1206 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1207 sizeof(res->dev_lun.scsi_lun)); 1208 res->lun = scsilun_to_int(&res->dev_lun); 1209 1210 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) { 1211 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) { 1212 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) { 1213 found = 1; 1214 res->target = gscsi_res->target; 1215 break; 1216 } 1217 } 1218 if (!found) { 1219 res->target = find_first_zero_bit(ioa_cfg->target_ids, 1220 ioa_cfg->max_devs_supported); 1221 set_bit(res->target, ioa_cfg->target_ids); 1222 } 1223 } else if (res->type == IPR_RES_TYPE_IOAFP) { 1224 res->bus = IPR_IOAFP_VIRTUAL_BUS; 1225 res->target = 0; 1226 } else if (res->type == IPR_RES_TYPE_ARRAY) { 1227 res->bus = IPR_ARRAY_VIRTUAL_BUS; 1228 res->target = find_first_zero_bit(ioa_cfg->array_ids, 1229 ioa_cfg->max_devs_supported); 1230 set_bit(res->target, ioa_cfg->array_ids); 1231 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) { 1232 res->bus = IPR_VSET_VIRTUAL_BUS; 1233 res->target = find_first_zero_bit(ioa_cfg->vset_ids, 1234 ioa_cfg->max_devs_supported); 1235 set_bit(res->target, ioa_cfg->vset_ids); 1236 } else { 1237 res->target = find_first_zero_bit(ioa_cfg->target_ids, 1238 ioa_cfg->max_devs_supported); 1239 set_bit(res->target, ioa_cfg->target_ids); 1240 } 1241 } else { 1242 proto = cfgtew->u.cfgte->proto; 1243 res->qmodel = IPR_QUEUEING_MODEL(res); 1244 res->flags = cfgtew->u.cfgte->flags; 1245 if (res->flags & IPR_IS_IOA_RESOURCE) 1246 res->type = IPR_RES_TYPE_IOAFP; 1247 else 1248 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f; 1249 1250 res->bus = cfgtew->u.cfgte->res_addr.bus; 1251 res->target = cfgtew->u.cfgte->res_addr.target; 1252 res->lun = cfgtew->u.cfgte->res_addr.lun; 1253 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn); 1254 } 1255 1256 ipr_update_ata_class(res, proto); 1257 } 1258 1259 /** 1260 * ipr_is_same_device - Determine if two devices are the same. 1261 * @res: resource entry struct 1262 * @cfgtew: config table entry wrapper struct 1263 * 1264 * Return value: 1265 * 1 if the devices are the same / 0 otherwise 1266 **/ 1267 static int ipr_is_same_device(struct ipr_resource_entry *res, 1268 struct ipr_config_table_entry_wrapper *cfgtew) 1269 { 1270 if (res->ioa_cfg->sis64) { 1271 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id, 1272 sizeof(cfgtew->u.cfgte64->dev_id)) && 1273 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1274 sizeof(cfgtew->u.cfgte64->lun))) { 1275 return 1; 1276 } 1277 } else { 1278 if (res->bus == cfgtew->u.cfgte->res_addr.bus && 1279 res->target == cfgtew->u.cfgte->res_addr.target && 1280 res->lun == cfgtew->u.cfgte->res_addr.lun) 1281 return 1; 1282 } 1283 1284 return 0; 1285 } 1286 1287 /** 1288 * __ipr_format_res_path - Format the resource path for printing. 1289 * @res_path: resource path 1290 * @buffer: buffer 1291 * @len: length of buffer provided 1292 * 1293 * Return value: 1294 * pointer to buffer 1295 **/ 1296 static char *__ipr_format_res_path(u8 *res_path, char *buffer, int len) 1297 { 1298 int i; 1299 char *p = buffer; 1300 1301 *p = '\0'; 1302 p += scnprintf(p, buffer + len - p, "%02X", res_path[0]); 1303 for (i = 1; res_path[i] != 0xff && i < IPR_RES_PATH_BYTES; i++) 1304 p += scnprintf(p, buffer + len - p, "-%02X", res_path[i]); 1305 1306 return buffer; 1307 } 1308 1309 /** 1310 * ipr_format_res_path - Format the resource path for printing. 1311 * @ioa_cfg: ioa config struct 1312 * @res_path: resource path 1313 * @buffer: buffer 1314 * @len: length of buffer provided 1315 * 1316 * Return value: 1317 * pointer to buffer 1318 **/ 1319 static char *ipr_format_res_path(struct ipr_ioa_cfg *ioa_cfg, 1320 u8 *res_path, char *buffer, int len) 1321 { 1322 char *p = buffer; 1323 1324 *p = '\0'; 1325 p += scnprintf(p, buffer + len - p, "%d/", ioa_cfg->host->host_no); 1326 __ipr_format_res_path(res_path, p, len - (p - buffer)); 1327 return buffer; 1328 } 1329 1330 /** 1331 * ipr_update_res_entry - Update the resource entry. 1332 * @res: resource entry struct 1333 * @cfgtew: config table entry wrapper struct 1334 * 1335 * Return value: 1336 * none 1337 **/ 1338 static void ipr_update_res_entry(struct ipr_resource_entry *res, 1339 struct ipr_config_table_entry_wrapper *cfgtew) 1340 { 1341 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1342 unsigned int proto; 1343 int new_path = 0; 1344 1345 if (res->ioa_cfg->sis64) { 1346 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags); 1347 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags); 1348 res->type = cfgtew->u.cfgte64->res_type; 1349 1350 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data, 1351 sizeof(struct ipr_std_inq_data)); 1352 1353 res->qmodel = IPR_QUEUEING_MODEL64(res); 1354 proto = cfgtew->u.cfgte64->proto; 1355 res->res_handle = cfgtew->u.cfgte64->res_handle; 1356 res->dev_id = cfgtew->u.cfgte64->dev_id; 1357 1358 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1359 sizeof(res->dev_lun.scsi_lun)); 1360 1361 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path, 1362 sizeof(res->res_path))) { 1363 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path, 1364 sizeof(res->res_path)); 1365 new_path = 1; 1366 } 1367 1368 if (res->sdev && new_path) 1369 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n", 1370 ipr_format_res_path(res->ioa_cfg, 1371 res->res_path, buffer, sizeof(buffer))); 1372 } else { 1373 res->flags = cfgtew->u.cfgte->flags; 1374 if (res->flags & IPR_IS_IOA_RESOURCE) 1375 res->type = IPR_RES_TYPE_IOAFP; 1376 else 1377 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f; 1378 1379 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data, 1380 sizeof(struct ipr_std_inq_data)); 1381 1382 res->qmodel = IPR_QUEUEING_MODEL(res); 1383 proto = cfgtew->u.cfgte->proto; 1384 res->res_handle = cfgtew->u.cfgte->res_handle; 1385 } 1386 1387 ipr_update_ata_class(res, proto); 1388 } 1389 1390 /** 1391 * ipr_clear_res_target - Clear the bit in the bit map representing the target 1392 * for the resource. 1393 * @res: resource entry struct 1394 * 1395 * Return value: 1396 * none 1397 **/ 1398 static void ipr_clear_res_target(struct ipr_resource_entry *res) 1399 { 1400 struct ipr_resource_entry *gscsi_res = NULL; 1401 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg; 1402 1403 if (!ioa_cfg->sis64) 1404 return; 1405 1406 if (res->bus == IPR_ARRAY_VIRTUAL_BUS) 1407 clear_bit(res->target, ioa_cfg->array_ids); 1408 else if (res->bus == IPR_VSET_VIRTUAL_BUS) 1409 clear_bit(res->target, ioa_cfg->vset_ids); 1410 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) { 1411 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) 1412 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res) 1413 return; 1414 clear_bit(res->target, ioa_cfg->target_ids); 1415 1416 } else if (res->bus == 0) 1417 clear_bit(res->target, ioa_cfg->target_ids); 1418 } 1419 1420 /** 1421 * ipr_handle_config_change - Handle a config change from the adapter 1422 * @ioa_cfg: ioa config struct 1423 * @hostrcb: hostrcb 1424 * 1425 * Return value: 1426 * none 1427 **/ 1428 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, 1429 struct ipr_hostrcb *hostrcb) 1430 { 1431 struct ipr_resource_entry *res = NULL; 1432 struct ipr_config_table_entry_wrapper cfgtew; 1433 __be32 cc_res_handle; 1434 1435 u32 is_ndn = 1; 1436 1437 if (ioa_cfg->sis64) { 1438 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64; 1439 cc_res_handle = cfgtew.u.cfgte64->res_handle; 1440 } else { 1441 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte; 1442 cc_res_handle = cfgtew.u.cfgte->res_handle; 1443 } 1444 1445 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1446 if (res->res_handle == cc_res_handle) { 1447 is_ndn = 0; 1448 break; 1449 } 1450 } 1451 1452 if (is_ndn) { 1453 if (list_empty(&ioa_cfg->free_res_q)) { 1454 ipr_send_hcam(ioa_cfg, 1455 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 1456 hostrcb); 1457 return; 1458 } 1459 1460 res = list_entry(ioa_cfg->free_res_q.next, 1461 struct ipr_resource_entry, queue); 1462 1463 list_del(&res->queue); 1464 ipr_init_res_entry(res, &cfgtew); 1465 list_add_tail(&res->queue, &ioa_cfg->used_res_q); 1466 } 1467 1468 ipr_update_res_entry(res, &cfgtew); 1469 1470 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { 1471 if (res->sdev) { 1472 res->del_from_ml = 1; 1473 res->res_handle = IPR_INVALID_RES_HANDLE; 1474 schedule_work(&ioa_cfg->work_q); 1475 } else { 1476 ipr_clear_res_target(res); 1477 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 1478 } 1479 } else if (!res->sdev || res->del_from_ml) { 1480 res->add_to_ml = 1; 1481 schedule_work(&ioa_cfg->work_q); 1482 } 1483 1484 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 1485 } 1486 1487 /** 1488 * ipr_process_ccn - Op done function for a CCN. 1489 * @ipr_cmd: ipr command struct 1490 * 1491 * This function is the op done function for a configuration 1492 * change notification host controlled async from the adapter. 1493 * 1494 * Return value: 1495 * none 1496 **/ 1497 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) 1498 { 1499 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1500 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 1501 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 1502 1503 list_del_init(&hostrcb->queue); 1504 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 1505 1506 if (ioasc) { 1507 if (ioasc != IPR_IOASC_IOA_WAS_RESET && 1508 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) 1509 dev_err(&ioa_cfg->pdev->dev, 1510 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 1511 1512 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 1513 } else { 1514 ipr_handle_config_change(ioa_cfg, hostrcb); 1515 } 1516 } 1517 1518 /** 1519 * strip_and_pad_whitespace - Strip and pad trailing whitespace. 1520 * @i: index into buffer 1521 * @buf: string to modify 1522 * 1523 * This function will strip all trailing whitespace, pad the end 1524 * of the string with a single space, and NULL terminate the string. 1525 * 1526 * Return value: 1527 * new length of string 1528 **/ 1529 static int strip_and_pad_whitespace(int i, char *buf) 1530 { 1531 while (i && buf[i] == ' ') 1532 i--; 1533 buf[i+1] = ' '; 1534 buf[i+2] = '\0'; 1535 return i + 2; 1536 } 1537 1538 /** 1539 * ipr_log_vpd_compact - Log the passed extended VPD compactly. 1540 * @prefix: string to print at start of printk 1541 * @hostrcb: hostrcb pointer 1542 * @vpd: vendor/product id/sn struct 1543 * 1544 * Return value: 1545 * none 1546 **/ 1547 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 1548 struct ipr_vpd *vpd) 1549 { 1550 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3]; 1551 int i = 0; 1552 1553 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 1554 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer); 1555 1556 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN); 1557 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer); 1558 1559 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN); 1560 buffer[IPR_SERIAL_NUM_LEN + i] = '\0'; 1561 1562 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer); 1563 } 1564 1565 /** 1566 * ipr_log_vpd - Log the passed VPD to the error log. 1567 * @vpd: vendor/product id/sn struct 1568 * 1569 * Return value: 1570 * none 1571 **/ 1572 static void ipr_log_vpd(struct ipr_vpd *vpd) 1573 { 1574 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN 1575 + IPR_SERIAL_NUM_LEN]; 1576 1577 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 1578 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id, 1579 IPR_PROD_ID_LEN); 1580 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; 1581 ipr_err("Vendor/Product ID: %s\n", buffer); 1582 1583 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN); 1584 buffer[IPR_SERIAL_NUM_LEN] = '\0'; 1585 ipr_err(" Serial Number: %s\n", buffer); 1586 } 1587 1588 /** 1589 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly. 1590 * @prefix: string to print at start of printk 1591 * @hostrcb: hostrcb pointer 1592 * @vpd: vendor/product id/sn/wwn struct 1593 * 1594 * Return value: 1595 * none 1596 **/ 1597 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 1598 struct ipr_ext_vpd *vpd) 1599 { 1600 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd); 1601 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix, 1602 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1])); 1603 } 1604 1605 /** 1606 * ipr_log_ext_vpd - Log the passed extended VPD to the error log. 1607 * @vpd: vendor/product id/sn/wwn struct 1608 * 1609 * Return value: 1610 * none 1611 **/ 1612 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd) 1613 { 1614 ipr_log_vpd(&vpd->vpd); 1615 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]), 1616 be32_to_cpu(vpd->wwid[1])); 1617 } 1618 1619 /** 1620 * ipr_log_enhanced_cache_error - Log a cache error. 1621 * @ioa_cfg: ioa config struct 1622 * @hostrcb: hostrcb struct 1623 * 1624 * Return value: 1625 * none 1626 **/ 1627 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1628 struct ipr_hostrcb *hostrcb) 1629 { 1630 struct ipr_hostrcb_type_12_error *error; 1631 1632 if (ioa_cfg->sis64) 1633 error = &hostrcb->hcam.u.error64.u.type_12_error; 1634 else 1635 error = &hostrcb->hcam.u.error.u.type_12_error; 1636 1637 ipr_err("-----Current Configuration-----\n"); 1638 ipr_err("Cache Directory Card Information:\n"); 1639 ipr_log_ext_vpd(&error->ioa_vpd); 1640 ipr_err("Adapter Card Information:\n"); 1641 ipr_log_ext_vpd(&error->cfc_vpd); 1642 1643 ipr_err("-----Expected Configuration-----\n"); 1644 ipr_err("Cache Directory Card Information:\n"); 1645 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd); 1646 ipr_err("Adapter Card Information:\n"); 1647 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd); 1648 1649 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1650 be32_to_cpu(error->ioa_data[0]), 1651 be32_to_cpu(error->ioa_data[1]), 1652 be32_to_cpu(error->ioa_data[2])); 1653 } 1654 1655 /** 1656 * ipr_log_cache_error - Log a cache error. 1657 * @ioa_cfg: ioa config struct 1658 * @hostrcb: hostrcb struct 1659 * 1660 * Return value: 1661 * none 1662 **/ 1663 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1664 struct ipr_hostrcb *hostrcb) 1665 { 1666 struct ipr_hostrcb_type_02_error *error = 1667 &hostrcb->hcam.u.error.u.type_02_error; 1668 1669 ipr_err("-----Current Configuration-----\n"); 1670 ipr_err("Cache Directory Card Information:\n"); 1671 ipr_log_vpd(&error->ioa_vpd); 1672 ipr_err("Adapter Card Information:\n"); 1673 ipr_log_vpd(&error->cfc_vpd); 1674 1675 ipr_err("-----Expected Configuration-----\n"); 1676 ipr_err("Cache Directory Card Information:\n"); 1677 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd); 1678 ipr_err("Adapter Card Information:\n"); 1679 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd); 1680 1681 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1682 be32_to_cpu(error->ioa_data[0]), 1683 be32_to_cpu(error->ioa_data[1]), 1684 be32_to_cpu(error->ioa_data[2])); 1685 } 1686 1687 /** 1688 * ipr_log_enhanced_config_error - Log a configuration error. 1689 * @ioa_cfg: ioa config struct 1690 * @hostrcb: hostrcb struct 1691 * 1692 * Return value: 1693 * none 1694 **/ 1695 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg, 1696 struct ipr_hostrcb *hostrcb) 1697 { 1698 int errors_logged, i; 1699 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry; 1700 struct ipr_hostrcb_type_13_error *error; 1701 1702 error = &hostrcb->hcam.u.error.u.type_13_error; 1703 errors_logged = be32_to_cpu(error->errors_logged); 1704 1705 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1706 be32_to_cpu(error->errors_detected), errors_logged); 1707 1708 dev_entry = error->dev; 1709 1710 for (i = 0; i < errors_logged; i++, dev_entry++) { 1711 ipr_err_separator; 1712 1713 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1714 ipr_log_ext_vpd(&dev_entry->vpd); 1715 1716 ipr_err("-----New Device Information-----\n"); 1717 ipr_log_ext_vpd(&dev_entry->new_vpd); 1718 1719 ipr_err("Cache Directory Card Information:\n"); 1720 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1721 1722 ipr_err("Adapter Card Information:\n"); 1723 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1724 } 1725 } 1726 1727 /** 1728 * ipr_log_sis64_config_error - Log a device error. 1729 * @ioa_cfg: ioa config struct 1730 * @hostrcb: hostrcb struct 1731 * 1732 * Return value: 1733 * none 1734 **/ 1735 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg, 1736 struct ipr_hostrcb *hostrcb) 1737 { 1738 int errors_logged, i; 1739 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry; 1740 struct ipr_hostrcb_type_23_error *error; 1741 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1742 1743 error = &hostrcb->hcam.u.error64.u.type_23_error; 1744 errors_logged = be32_to_cpu(error->errors_logged); 1745 1746 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1747 be32_to_cpu(error->errors_detected), errors_logged); 1748 1749 dev_entry = error->dev; 1750 1751 for (i = 0; i < errors_logged; i++, dev_entry++) { 1752 ipr_err_separator; 1753 1754 ipr_err("Device %d : %s", i + 1, 1755 __ipr_format_res_path(dev_entry->res_path, 1756 buffer, sizeof(buffer))); 1757 ipr_log_ext_vpd(&dev_entry->vpd); 1758 1759 ipr_err("-----New Device Information-----\n"); 1760 ipr_log_ext_vpd(&dev_entry->new_vpd); 1761 1762 ipr_err("Cache Directory Card Information:\n"); 1763 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1764 1765 ipr_err("Adapter Card Information:\n"); 1766 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1767 } 1768 } 1769 1770 /** 1771 * ipr_log_config_error - Log a configuration error. 1772 * @ioa_cfg: ioa config struct 1773 * @hostrcb: hostrcb struct 1774 * 1775 * Return value: 1776 * none 1777 **/ 1778 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, 1779 struct ipr_hostrcb *hostrcb) 1780 { 1781 int errors_logged, i; 1782 struct ipr_hostrcb_device_data_entry *dev_entry; 1783 struct ipr_hostrcb_type_03_error *error; 1784 1785 error = &hostrcb->hcam.u.error.u.type_03_error; 1786 errors_logged = be32_to_cpu(error->errors_logged); 1787 1788 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1789 be32_to_cpu(error->errors_detected), errors_logged); 1790 1791 dev_entry = error->dev; 1792 1793 for (i = 0; i < errors_logged; i++, dev_entry++) { 1794 ipr_err_separator; 1795 1796 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1797 ipr_log_vpd(&dev_entry->vpd); 1798 1799 ipr_err("-----New Device Information-----\n"); 1800 ipr_log_vpd(&dev_entry->new_vpd); 1801 1802 ipr_err("Cache Directory Card Information:\n"); 1803 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd); 1804 1805 ipr_err("Adapter Card Information:\n"); 1806 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd); 1807 1808 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", 1809 be32_to_cpu(dev_entry->ioa_data[0]), 1810 be32_to_cpu(dev_entry->ioa_data[1]), 1811 be32_to_cpu(dev_entry->ioa_data[2]), 1812 be32_to_cpu(dev_entry->ioa_data[3]), 1813 be32_to_cpu(dev_entry->ioa_data[4])); 1814 } 1815 } 1816 1817 /** 1818 * ipr_log_enhanced_array_error - Log an array configuration error. 1819 * @ioa_cfg: ioa config struct 1820 * @hostrcb: hostrcb struct 1821 * 1822 * Return value: 1823 * none 1824 **/ 1825 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg, 1826 struct ipr_hostrcb *hostrcb) 1827 { 1828 int i, num_entries; 1829 struct ipr_hostrcb_type_14_error *error; 1830 struct ipr_hostrcb_array_data_entry_enhanced *array_entry; 1831 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1832 1833 error = &hostrcb->hcam.u.error.u.type_14_error; 1834 1835 ipr_err_separator; 1836 1837 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1838 error->protection_level, 1839 ioa_cfg->host->host_no, 1840 error->last_func_vset_res_addr.bus, 1841 error->last_func_vset_res_addr.target, 1842 error->last_func_vset_res_addr.lun); 1843 1844 ipr_err_separator; 1845 1846 array_entry = error->array_member; 1847 num_entries = min_t(u32, be32_to_cpu(error->num_entries), 1848 ARRAY_SIZE(error->array_member)); 1849 1850 for (i = 0; i < num_entries; i++, array_entry++) { 1851 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1852 continue; 1853 1854 if (be32_to_cpu(error->exposed_mode_adn) == i) 1855 ipr_err("Exposed Array Member %d:\n", i); 1856 else 1857 ipr_err("Array Member %d:\n", i); 1858 1859 ipr_log_ext_vpd(&array_entry->vpd); 1860 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1861 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1862 "Expected Location"); 1863 1864 ipr_err_separator; 1865 } 1866 } 1867 1868 /** 1869 * ipr_log_array_error - Log an array configuration error. 1870 * @ioa_cfg: ioa config struct 1871 * @hostrcb: hostrcb struct 1872 * 1873 * Return value: 1874 * none 1875 **/ 1876 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, 1877 struct ipr_hostrcb *hostrcb) 1878 { 1879 int i; 1880 struct ipr_hostrcb_type_04_error *error; 1881 struct ipr_hostrcb_array_data_entry *array_entry; 1882 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1883 1884 error = &hostrcb->hcam.u.error.u.type_04_error; 1885 1886 ipr_err_separator; 1887 1888 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1889 error->protection_level, 1890 ioa_cfg->host->host_no, 1891 error->last_func_vset_res_addr.bus, 1892 error->last_func_vset_res_addr.target, 1893 error->last_func_vset_res_addr.lun); 1894 1895 ipr_err_separator; 1896 1897 array_entry = error->array_member; 1898 1899 for (i = 0; i < 18; i++) { 1900 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1901 continue; 1902 1903 if (be32_to_cpu(error->exposed_mode_adn) == i) 1904 ipr_err("Exposed Array Member %d:\n", i); 1905 else 1906 ipr_err("Array Member %d:\n", i); 1907 1908 ipr_log_vpd(&array_entry->vpd); 1909 1910 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1911 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1912 "Expected Location"); 1913 1914 ipr_err_separator; 1915 1916 if (i == 9) 1917 array_entry = error->array_member2; 1918 else 1919 array_entry++; 1920 } 1921 } 1922 1923 /** 1924 * ipr_log_hex_data - Log additional hex IOA error data. 1925 * @ioa_cfg: ioa config struct 1926 * @data: IOA error data 1927 * @len: data length 1928 * 1929 * Return value: 1930 * none 1931 **/ 1932 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, __be32 *data, int len) 1933 { 1934 int i; 1935 1936 if (len == 0) 1937 return; 1938 1939 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 1940 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP); 1941 1942 for (i = 0; i < len / 4; i += 4) { 1943 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 1944 be32_to_cpu(data[i]), 1945 be32_to_cpu(data[i+1]), 1946 be32_to_cpu(data[i+2]), 1947 be32_to_cpu(data[i+3])); 1948 } 1949 } 1950 1951 /** 1952 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error. 1953 * @ioa_cfg: ioa config struct 1954 * @hostrcb: hostrcb struct 1955 * 1956 * Return value: 1957 * none 1958 **/ 1959 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1960 struct ipr_hostrcb *hostrcb) 1961 { 1962 struct ipr_hostrcb_type_17_error *error; 1963 1964 if (ioa_cfg->sis64) 1965 error = &hostrcb->hcam.u.error64.u.type_17_error; 1966 else 1967 error = &hostrcb->hcam.u.error.u.type_17_error; 1968 1969 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1970 strim(error->failure_reason); 1971 1972 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 1973 be32_to_cpu(hostrcb->hcam.u.error.prc)); 1974 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd); 1975 ipr_log_hex_data(ioa_cfg, error->data, 1976 be32_to_cpu(hostrcb->hcam.length) - 1977 (offsetof(struct ipr_hostrcb_error, u) + 1978 offsetof(struct ipr_hostrcb_type_17_error, data))); 1979 } 1980 1981 /** 1982 * ipr_log_dual_ioa_error - Log a dual adapter error. 1983 * @ioa_cfg: ioa config struct 1984 * @hostrcb: hostrcb struct 1985 * 1986 * Return value: 1987 * none 1988 **/ 1989 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1990 struct ipr_hostrcb *hostrcb) 1991 { 1992 struct ipr_hostrcb_type_07_error *error; 1993 1994 error = &hostrcb->hcam.u.error.u.type_07_error; 1995 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1996 strim(error->failure_reason); 1997 1998 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 1999 be32_to_cpu(hostrcb->hcam.u.error.prc)); 2000 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd); 2001 ipr_log_hex_data(ioa_cfg, error->data, 2002 be32_to_cpu(hostrcb->hcam.length) - 2003 (offsetof(struct ipr_hostrcb_error, u) + 2004 offsetof(struct ipr_hostrcb_type_07_error, data))); 2005 } 2006 2007 static const struct { 2008 u8 active; 2009 char *desc; 2010 } path_active_desc[] = { 2011 { IPR_PATH_NO_INFO, "Path" }, 2012 { IPR_PATH_ACTIVE, "Active path" }, 2013 { IPR_PATH_NOT_ACTIVE, "Inactive path" } 2014 }; 2015 2016 static const struct { 2017 u8 state; 2018 char *desc; 2019 } path_state_desc[] = { 2020 { IPR_PATH_STATE_NO_INFO, "has no path state information available" }, 2021 { IPR_PATH_HEALTHY, "is healthy" }, 2022 { IPR_PATH_DEGRADED, "is degraded" }, 2023 { IPR_PATH_FAILED, "is failed" } 2024 }; 2025 2026 /** 2027 * ipr_log_fabric_path - Log a fabric path error 2028 * @hostrcb: hostrcb struct 2029 * @fabric: fabric descriptor 2030 * 2031 * Return value: 2032 * none 2033 **/ 2034 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb, 2035 struct ipr_hostrcb_fabric_desc *fabric) 2036 { 2037 int i, j; 2038 u8 path_state = fabric->path_state; 2039 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 2040 u8 state = path_state & IPR_PATH_STATE_MASK; 2041 2042 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 2043 if (path_active_desc[i].active != active) 2044 continue; 2045 2046 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 2047 if (path_state_desc[j].state != state) 2048 continue; 2049 2050 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) { 2051 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n", 2052 path_active_desc[i].desc, path_state_desc[j].desc, 2053 fabric->ioa_port); 2054 } else if (fabric->cascaded_expander == 0xff) { 2055 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n", 2056 path_active_desc[i].desc, path_state_desc[j].desc, 2057 fabric->ioa_port, fabric->phy); 2058 } else if (fabric->phy == 0xff) { 2059 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n", 2060 path_active_desc[i].desc, path_state_desc[j].desc, 2061 fabric->ioa_port, fabric->cascaded_expander); 2062 } else { 2063 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n", 2064 path_active_desc[i].desc, path_state_desc[j].desc, 2065 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 2066 } 2067 return; 2068 } 2069 } 2070 2071 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state, 2072 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 2073 } 2074 2075 /** 2076 * ipr_log64_fabric_path - Log a fabric path error 2077 * @hostrcb: hostrcb struct 2078 * @fabric: fabric descriptor 2079 * 2080 * Return value: 2081 * none 2082 **/ 2083 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb, 2084 struct ipr_hostrcb64_fabric_desc *fabric) 2085 { 2086 int i, j; 2087 u8 path_state = fabric->path_state; 2088 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 2089 u8 state = path_state & IPR_PATH_STATE_MASK; 2090 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2091 2092 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 2093 if (path_active_desc[i].active != active) 2094 continue; 2095 2096 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 2097 if (path_state_desc[j].state != state) 2098 continue; 2099 2100 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n", 2101 path_active_desc[i].desc, path_state_desc[j].desc, 2102 ipr_format_res_path(hostrcb->ioa_cfg, 2103 fabric->res_path, 2104 buffer, sizeof(buffer))); 2105 return; 2106 } 2107 } 2108 2109 ipr_err("Path state=%02X Resource Path=%s\n", path_state, 2110 ipr_format_res_path(hostrcb->ioa_cfg, fabric->res_path, 2111 buffer, sizeof(buffer))); 2112 } 2113 2114 static const struct { 2115 u8 type; 2116 char *desc; 2117 } path_type_desc[] = { 2118 { IPR_PATH_CFG_IOA_PORT, "IOA port" }, 2119 { IPR_PATH_CFG_EXP_PORT, "Expander port" }, 2120 { IPR_PATH_CFG_DEVICE_PORT, "Device port" }, 2121 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" } 2122 }; 2123 2124 static const struct { 2125 u8 status; 2126 char *desc; 2127 } path_status_desc[] = { 2128 { IPR_PATH_CFG_NO_PROB, "Functional" }, 2129 { IPR_PATH_CFG_DEGRADED, "Degraded" }, 2130 { IPR_PATH_CFG_FAILED, "Failed" }, 2131 { IPR_PATH_CFG_SUSPECT, "Suspect" }, 2132 { IPR_PATH_NOT_DETECTED, "Missing" }, 2133 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" } 2134 }; 2135 2136 static const char *link_rate[] = { 2137 "unknown", 2138 "disabled", 2139 "phy reset problem", 2140 "spinup hold", 2141 "port selector", 2142 "unknown", 2143 "unknown", 2144 "unknown", 2145 "1.5Gbps", 2146 "3.0Gbps", 2147 "unknown", 2148 "unknown", 2149 "unknown", 2150 "unknown", 2151 "unknown", 2152 "unknown" 2153 }; 2154 2155 /** 2156 * ipr_log_path_elem - Log a fabric path element. 2157 * @hostrcb: hostrcb struct 2158 * @cfg: fabric path element struct 2159 * 2160 * Return value: 2161 * none 2162 **/ 2163 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb, 2164 struct ipr_hostrcb_config_element *cfg) 2165 { 2166 int i, j; 2167 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 2168 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 2169 2170 if (type == IPR_PATH_CFG_NOT_EXIST) 2171 return; 2172 2173 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 2174 if (path_type_desc[i].type != type) 2175 continue; 2176 2177 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 2178 if (path_status_desc[j].status != status) 2179 continue; 2180 2181 if (type == IPR_PATH_CFG_IOA_PORT) { 2182 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n", 2183 path_status_desc[j].desc, path_type_desc[i].desc, 2184 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2185 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2186 } else { 2187 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) { 2188 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n", 2189 path_status_desc[j].desc, path_type_desc[i].desc, 2190 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2191 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2192 } else if (cfg->cascaded_expander == 0xff) { 2193 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, " 2194 "WWN=%08X%08X\n", path_status_desc[j].desc, 2195 path_type_desc[i].desc, cfg->phy, 2196 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2197 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2198 } else if (cfg->phy == 0xff) { 2199 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, " 2200 "WWN=%08X%08X\n", path_status_desc[j].desc, 2201 path_type_desc[i].desc, cfg->cascaded_expander, 2202 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2203 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2204 } else { 2205 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s " 2206 "WWN=%08X%08X\n", path_status_desc[j].desc, 2207 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy, 2208 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2209 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2210 } 2211 } 2212 return; 2213 } 2214 } 2215 2216 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s " 2217 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy, 2218 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2219 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2220 } 2221 2222 /** 2223 * ipr_log64_path_elem - Log a fabric path element. 2224 * @hostrcb: hostrcb struct 2225 * @cfg: fabric path element struct 2226 * 2227 * Return value: 2228 * none 2229 **/ 2230 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb, 2231 struct ipr_hostrcb64_config_element *cfg) 2232 { 2233 int i, j; 2234 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK; 2235 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 2236 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 2237 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2238 2239 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64) 2240 return; 2241 2242 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 2243 if (path_type_desc[i].type != type) 2244 continue; 2245 2246 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 2247 if (path_status_desc[j].status != status) 2248 continue; 2249 2250 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n", 2251 path_status_desc[j].desc, path_type_desc[i].desc, 2252 ipr_format_res_path(hostrcb->ioa_cfg, 2253 cfg->res_path, buffer, sizeof(buffer)), 2254 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2255 be32_to_cpu(cfg->wwid[0]), 2256 be32_to_cpu(cfg->wwid[1])); 2257 return; 2258 } 2259 } 2260 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s " 2261 "WWN=%08X%08X\n", cfg->type_status, 2262 ipr_format_res_path(hostrcb->ioa_cfg, 2263 cfg->res_path, buffer, sizeof(buffer)), 2264 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2265 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2266 } 2267 2268 /** 2269 * ipr_log_fabric_error - Log a fabric error. 2270 * @ioa_cfg: ioa config struct 2271 * @hostrcb: hostrcb struct 2272 * 2273 * Return value: 2274 * none 2275 **/ 2276 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 2277 struct ipr_hostrcb *hostrcb) 2278 { 2279 struct ipr_hostrcb_type_20_error *error; 2280 struct ipr_hostrcb_fabric_desc *fabric; 2281 struct ipr_hostrcb_config_element *cfg; 2282 int i, add_len; 2283 2284 error = &hostrcb->hcam.u.error.u.type_20_error; 2285 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2286 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 2287 2288 add_len = be32_to_cpu(hostrcb->hcam.length) - 2289 (offsetof(struct ipr_hostrcb_error, u) + 2290 offsetof(struct ipr_hostrcb_type_20_error, desc)); 2291 2292 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 2293 ipr_log_fabric_path(hostrcb, fabric); 2294 for_each_fabric_cfg(fabric, cfg) 2295 ipr_log_path_elem(hostrcb, cfg); 2296 2297 add_len -= be16_to_cpu(fabric->length); 2298 fabric = (struct ipr_hostrcb_fabric_desc *) 2299 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 2300 } 2301 2302 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len); 2303 } 2304 2305 /** 2306 * ipr_log_sis64_array_error - Log a sis64 array error. 2307 * @ioa_cfg: ioa config struct 2308 * @hostrcb: hostrcb struct 2309 * 2310 * Return value: 2311 * none 2312 **/ 2313 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg, 2314 struct ipr_hostrcb *hostrcb) 2315 { 2316 int i, num_entries; 2317 struct ipr_hostrcb_type_24_error *error; 2318 struct ipr_hostrcb64_array_data_entry *array_entry; 2319 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2320 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 2321 2322 error = &hostrcb->hcam.u.error64.u.type_24_error; 2323 2324 ipr_err_separator; 2325 2326 ipr_err("RAID %s Array Configuration: %s\n", 2327 error->protection_level, 2328 ipr_format_res_path(ioa_cfg, error->last_res_path, 2329 buffer, sizeof(buffer))); 2330 2331 ipr_err_separator; 2332 2333 array_entry = error->array_member; 2334 num_entries = min_t(u32, error->num_entries, 2335 ARRAY_SIZE(error->array_member)); 2336 2337 for (i = 0; i < num_entries; i++, array_entry++) { 2338 2339 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 2340 continue; 2341 2342 if (error->exposed_mode_adn == i) 2343 ipr_err("Exposed Array Member %d:\n", i); 2344 else 2345 ipr_err("Array Member %d:\n", i); 2346 2347 ipr_err("Array Member %d:\n", i); 2348 ipr_log_ext_vpd(&array_entry->vpd); 2349 ipr_err("Current Location: %s\n", 2350 ipr_format_res_path(ioa_cfg, array_entry->res_path, 2351 buffer, sizeof(buffer))); 2352 ipr_err("Expected Location: %s\n", 2353 ipr_format_res_path(ioa_cfg, 2354 array_entry->expected_res_path, 2355 buffer, sizeof(buffer))); 2356 2357 ipr_err_separator; 2358 } 2359 } 2360 2361 /** 2362 * ipr_log_sis64_fabric_error - Log a sis64 fabric error. 2363 * @ioa_cfg: ioa config struct 2364 * @hostrcb: hostrcb struct 2365 * 2366 * Return value: 2367 * none 2368 **/ 2369 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 2370 struct ipr_hostrcb *hostrcb) 2371 { 2372 struct ipr_hostrcb_type_30_error *error; 2373 struct ipr_hostrcb64_fabric_desc *fabric; 2374 struct ipr_hostrcb64_config_element *cfg; 2375 int i, add_len; 2376 2377 error = &hostrcb->hcam.u.error64.u.type_30_error; 2378 2379 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2380 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 2381 2382 add_len = be32_to_cpu(hostrcb->hcam.length) - 2383 (offsetof(struct ipr_hostrcb64_error, u) + 2384 offsetof(struct ipr_hostrcb_type_30_error, desc)); 2385 2386 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 2387 ipr_log64_fabric_path(hostrcb, fabric); 2388 for_each_fabric_cfg(fabric, cfg) 2389 ipr_log64_path_elem(hostrcb, cfg); 2390 2391 add_len -= be16_to_cpu(fabric->length); 2392 fabric = (struct ipr_hostrcb64_fabric_desc *) 2393 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 2394 } 2395 2396 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len); 2397 } 2398 2399 /** 2400 * ipr_log_sis64_service_required_error - Log a sis64 service required error. 2401 * @ioa_cfg: ioa config struct 2402 * @hostrcb: hostrcb struct 2403 * 2404 * Return value: 2405 * none 2406 **/ 2407 static void ipr_log_sis64_service_required_error(struct ipr_ioa_cfg *ioa_cfg, 2408 struct ipr_hostrcb *hostrcb) 2409 { 2410 struct ipr_hostrcb_type_41_error *error; 2411 2412 error = &hostrcb->hcam.u.error64.u.type_41_error; 2413 2414 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2415 ipr_err("Primary Failure Reason: %s\n", error->failure_reason); 2416 ipr_log_hex_data(ioa_cfg, error->data, 2417 be32_to_cpu(hostrcb->hcam.length) - 2418 (offsetof(struct ipr_hostrcb_error, u) + 2419 offsetof(struct ipr_hostrcb_type_41_error, data))); 2420 } 2421 /** 2422 * ipr_log_generic_error - Log an adapter error. 2423 * @ioa_cfg: ioa config struct 2424 * @hostrcb: hostrcb struct 2425 * 2426 * Return value: 2427 * none 2428 **/ 2429 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, 2430 struct ipr_hostrcb *hostrcb) 2431 { 2432 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data, 2433 be32_to_cpu(hostrcb->hcam.length)); 2434 } 2435 2436 /** 2437 * ipr_log_sis64_device_error - Log a cache error. 2438 * @ioa_cfg: ioa config struct 2439 * @hostrcb: hostrcb struct 2440 * 2441 * Return value: 2442 * none 2443 **/ 2444 static void ipr_log_sis64_device_error(struct ipr_ioa_cfg *ioa_cfg, 2445 struct ipr_hostrcb *hostrcb) 2446 { 2447 struct ipr_hostrcb_type_21_error *error; 2448 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2449 2450 error = &hostrcb->hcam.u.error64.u.type_21_error; 2451 2452 ipr_err("-----Failing Device Information-----\n"); 2453 ipr_err("World Wide Unique ID: %08X%08X%08X%08X\n", 2454 be32_to_cpu(error->wwn[0]), be32_to_cpu(error->wwn[1]), 2455 be32_to_cpu(error->wwn[2]), be32_to_cpu(error->wwn[3])); 2456 ipr_err("Device Resource Path: %s\n", 2457 __ipr_format_res_path(error->res_path, 2458 buffer, sizeof(buffer))); 2459 error->primary_problem_desc[sizeof(error->primary_problem_desc) - 1] = '\0'; 2460 error->second_problem_desc[sizeof(error->second_problem_desc) - 1] = '\0'; 2461 ipr_err("Primary Problem Description: %s\n", error->primary_problem_desc); 2462 ipr_err("Secondary Problem Description: %s\n", error->second_problem_desc); 2463 ipr_err("SCSI Sense Data:\n"); 2464 ipr_log_hex_data(ioa_cfg, error->sense_data, sizeof(error->sense_data)); 2465 ipr_err("SCSI Command Descriptor Block: \n"); 2466 ipr_log_hex_data(ioa_cfg, error->cdb, sizeof(error->cdb)); 2467 2468 ipr_err("Additional IOA Data:\n"); 2469 ipr_log_hex_data(ioa_cfg, error->ioa_data, be32_to_cpu(error->length_of_error)); 2470 } 2471 2472 /** 2473 * ipr_get_error - Find the specfied IOASC in the ipr_error_table. 2474 * @ioasc: IOASC 2475 * 2476 * This function will return the index of into the ipr_error_table 2477 * for the specified IOASC. If the IOASC is not in the table, 2478 * 0 will be returned, which points to the entry used for unknown errors. 2479 * 2480 * Return value: 2481 * index into the ipr_error_table 2482 **/ 2483 static u32 ipr_get_error(u32 ioasc) 2484 { 2485 int i; 2486 2487 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) 2488 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK)) 2489 return i; 2490 2491 return 0; 2492 } 2493 2494 /** 2495 * ipr_handle_log_data - Log an adapter error. 2496 * @ioa_cfg: ioa config struct 2497 * @hostrcb: hostrcb struct 2498 * 2499 * This function logs an adapter error to the system. 2500 * 2501 * Return value: 2502 * none 2503 **/ 2504 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 2505 struct ipr_hostrcb *hostrcb) 2506 { 2507 u32 ioasc; 2508 int error_index; 2509 struct ipr_hostrcb_type_21_error *error; 2510 2511 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) 2512 return; 2513 2514 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) 2515 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); 2516 2517 if (ioa_cfg->sis64) 2518 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc); 2519 else 2520 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 2521 2522 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET || 2523 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) { 2524 /* Tell the midlayer we had a bus reset so it will handle the UA properly */ 2525 scsi_report_bus_reset(ioa_cfg->host, 2526 hostrcb->hcam.u.error.fd_res_addr.bus); 2527 } 2528 2529 error_index = ipr_get_error(ioasc); 2530 2531 if (!ipr_error_table[error_index].log_hcam) 2532 return; 2533 2534 if (ioasc == IPR_IOASC_HW_CMD_FAILED && 2535 hostrcb->hcam.overlay_id == IPR_HOST_RCB_OVERLAY_ID_21) { 2536 error = &hostrcb->hcam.u.error64.u.type_21_error; 2537 2538 if (((be32_to_cpu(error->sense_data[0]) & 0x0000ff00) >> 8) == ILLEGAL_REQUEST && 2539 ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 2540 return; 2541 } 2542 2543 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error); 2544 2545 /* Set indication we have logged an error */ 2546 ioa_cfg->errors_logged++; 2547 2548 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam) 2549 return; 2550 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw)) 2551 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw)); 2552 2553 switch (hostrcb->hcam.overlay_id) { 2554 case IPR_HOST_RCB_OVERLAY_ID_2: 2555 ipr_log_cache_error(ioa_cfg, hostrcb); 2556 break; 2557 case IPR_HOST_RCB_OVERLAY_ID_3: 2558 ipr_log_config_error(ioa_cfg, hostrcb); 2559 break; 2560 case IPR_HOST_RCB_OVERLAY_ID_4: 2561 case IPR_HOST_RCB_OVERLAY_ID_6: 2562 ipr_log_array_error(ioa_cfg, hostrcb); 2563 break; 2564 case IPR_HOST_RCB_OVERLAY_ID_7: 2565 ipr_log_dual_ioa_error(ioa_cfg, hostrcb); 2566 break; 2567 case IPR_HOST_RCB_OVERLAY_ID_12: 2568 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb); 2569 break; 2570 case IPR_HOST_RCB_OVERLAY_ID_13: 2571 ipr_log_enhanced_config_error(ioa_cfg, hostrcb); 2572 break; 2573 case IPR_HOST_RCB_OVERLAY_ID_14: 2574 case IPR_HOST_RCB_OVERLAY_ID_16: 2575 ipr_log_enhanced_array_error(ioa_cfg, hostrcb); 2576 break; 2577 case IPR_HOST_RCB_OVERLAY_ID_17: 2578 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb); 2579 break; 2580 case IPR_HOST_RCB_OVERLAY_ID_20: 2581 ipr_log_fabric_error(ioa_cfg, hostrcb); 2582 break; 2583 case IPR_HOST_RCB_OVERLAY_ID_21: 2584 ipr_log_sis64_device_error(ioa_cfg, hostrcb); 2585 break; 2586 case IPR_HOST_RCB_OVERLAY_ID_23: 2587 ipr_log_sis64_config_error(ioa_cfg, hostrcb); 2588 break; 2589 case IPR_HOST_RCB_OVERLAY_ID_24: 2590 case IPR_HOST_RCB_OVERLAY_ID_26: 2591 ipr_log_sis64_array_error(ioa_cfg, hostrcb); 2592 break; 2593 case IPR_HOST_RCB_OVERLAY_ID_30: 2594 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb); 2595 break; 2596 case IPR_HOST_RCB_OVERLAY_ID_41: 2597 ipr_log_sis64_service_required_error(ioa_cfg, hostrcb); 2598 break; 2599 case IPR_HOST_RCB_OVERLAY_ID_1: 2600 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: 2601 default: 2602 ipr_log_generic_error(ioa_cfg, hostrcb); 2603 break; 2604 } 2605 } 2606 2607 static struct ipr_hostrcb *ipr_get_free_hostrcb(struct ipr_ioa_cfg *ioa) 2608 { 2609 struct ipr_hostrcb *hostrcb; 2610 2611 hostrcb = list_first_entry_or_null(&ioa->hostrcb_free_q, 2612 struct ipr_hostrcb, queue); 2613 2614 if (unlikely(!hostrcb)) { 2615 dev_info(&ioa->pdev->dev, "Reclaiming async error buffers."); 2616 hostrcb = list_first_entry_or_null(&ioa->hostrcb_report_q, 2617 struct ipr_hostrcb, queue); 2618 } 2619 2620 list_del_init(&hostrcb->queue); 2621 return hostrcb; 2622 } 2623 2624 /** 2625 * ipr_process_error - Op done function for an adapter error log. 2626 * @ipr_cmd: ipr command struct 2627 * 2628 * This function is the op done function for an error log host 2629 * controlled async from the adapter. It will log the error and 2630 * send the HCAM back to the adapter. 2631 * 2632 * Return value: 2633 * none 2634 **/ 2635 static void ipr_process_error(struct ipr_cmnd *ipr_cmd) 2636 { 2637 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2638 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 2639 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 2640 u32 fd_ioasc; 2641 2642 if (ioa_cfg->sis64) 2643 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc); 2644 else 2645 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 2646 2647 list_del_init(&hostrcb->queue); 2648 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 2649 2650 if (!ioasc) { 2651 ipr_handle_log_data(ioa_cfg, hostrcb); 2652 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED) 2653 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV); 2654 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET && 2655 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) { 2656 dev_err(&ioa_cfg->pdev->dev, 2657 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 2658 } 2659 2660 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_report_q); 2661 schedule_work(&ioa_cfg->work_q); 2662 hostrcb = ipr_get_free_hostrcb(ioa_cfg); 2663 2664 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 2665 } 2666 2667 /** 2668 * ipr_timeout - An internally generated op has timed out. 2669 * @t: Timer context used to fetch ipr command struct 2670 * 2671 * This function blocks host requests and initiates an 2672 * adapter reset. 2673 * 2674 * Return value: 2675 * none 2676 **/ 2677 static void ipr_timeout(struct timer_list *t) 2678 { 2679 struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer); 2680 unsigned long lock_flags = 0; 2681 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2682 2683 ENTER; 2684 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2685 2686 ioa_cfg->errors_logged++; 2687 dev_err(&ioa_cfg->pdev->dev, 2688 "Adapter being reset due to command timeout.\n"); 2689 2690 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 2691 ioa_cfg->sdt_state = GET_DUMP; 2692 2693 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) 2694 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2695 2696 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2697 LEAVE; 2698 } 2699 2700 /** 2701 * ipr_oper_timeout - Adapter timed out transitioning to operational 2702 * @t: Timer context used to fetch ipr command struct 2703 * 2704 * This function blocks host requests and initiates an 2705 * adapter reset. 2706 * 2707 * Return value: 2708 * none 2709 **/ 2710 static void ipr_oper_timeout(struct timer_list *t) 2711 { 2712 struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer); 2713 unsigned long lock_flags = 0; 2714 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2715 2716 ENTER; 2717 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2718 2719 ioa_cfg->errors_logged++; 2720 dev_err(&ioa_cfg->pdev->dev, 2721 "Adapter timed out transitioning to operational.\n"); 2722 2723 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 2724 ioa_cfg->sdt_state = GET_DUMP; 2725 2726 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { 2727 if (ipr_fastfail) 2728 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 2729 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2730 } 2731 2732 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2733 LEAVE; 2734 } 2735 2736 /** 2737 * ipr_find_ses_entry - Find matching SES in SES table 2738 * @res: resource entry struct of SES 2739 * 2740 * Return value: 2741 * pointer to SES table entry / NULL on failure 2742 **/ 2743 static const struct ipr_ses_table_entry * 2744 ipr_find_ses_entry(struct ipr_resource_entry *res) 2745 { 2746 int i, j, matches; 2747 struct ipr_std_inq_vpids *vpids; 2748 const struct ipr_ses_table_entry *ste = ipr_ses_table; 2749 2750 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { 2751 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { 2752 if (ste->compare_product_id_byte[j] == 'X') { 2753 vpids = &res->std_inq_data.vpids; 2754 if (vpids->product_id[j] == ste->product_id[j]) 2755 matches++; 2756 else 2757 break; 2758 } else 2759 matches++; 2760 } 2761 2762 if (matches == IPR_PROD_ID_LEN) 2763 return ste; 2764 } 2765 2766 return NULL; 2767 } 2768 2769 /** 2770 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus 2771 * @ioa_cfg: ioa config struct 2772 * @bus: SCSI bus 2773 * @bus_width: bus width 2774 * 2775 * Return value: 2776 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz 2777 * For a 2-byte wide SCSI bus, the maximum transfer speed is 2778 * twice the maximum transfer rate (e.g. for a wide enabled bus, 2779 * max 160MHz = max 320MB/sec). 2780 **/ 2781 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) 2782 { 2783 struct ipr_resource_entry *res; 2784 const struct ipr_ses_table_entry *ste; 2785 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); 2786 2787 /* Loop through each config table entry in the config table buffer */ 2788 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2789 if (!(IPR_IS_SES_DEVICE(res->std_inq_data))) 2790 continue; 2791 2792 if (bus != res->bus) 2793 continue; 2794 2795 if (!(ste = ipr_find_ses_entry(res))) 2796 continue; 2797 2798 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); 2799 } 2800 2801 return max_xfer_rate; 2802 } 2803 2804 /** 2805 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA 2806 * @ioa_cfg: ioa config struct 2807 * @max_delay: max delay in micro-seconds to wait 2808 * 2809 * Waits for an IODEBUG ACK from the IOA, doing busy looping. 2810 * 2811 * Return value: 2812 * 0 on success / other on failure 2813 **/ 2814 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) 2815 { 2816 volatile u32 pcii_reg; 2817 int delay = 1; 2818 2819 /* Read interrupt reg until IOA signals IO Debug Acknowledge */ 2820 while (delay < max_delay) { 2821 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 2822 2823 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) 2824 return 0; 2825 2826 /* udelay cannot be used if delay is more than a few milliseconds */ 2827 if ((delay / 1000) > MAX_UDELAY_MS) 2828 mdelay(delay / 1000); 2829 else 2830 udelay(delay); 2831 2832 delay += delay; 2833 } 2834 return -EIO; 2835 } 2836 2837 /** 2838 * ipr_get_sis64_dump_data_section - Dump IOA memory 2839 * @ioa_cfg: ioa config struct 2840 * @start_addr: adapter address to dump 2841 * @dest: destination kernel buffer 2842 * @length_in_words: length to dump in 4 byte words 2843 * 2844 * Return value: 2845 * 0 on success 2846 **/ 2847 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg, 2848 u32 start_addr, 2849 __be32 *dest, u32 length_in_words) 2850 { 2851 int i; 2852 2853 for (i = 0; i < length_in_words; i++) { 2854 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg); 2855 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg)); 2856 dest++; 2857 } 2858 2859 return 0; 2860 } 2861 2862 /** 2863 * ipr_get_ldump_data_section - Dump IOA memory 2864 * @ioa_cfg: ioa config struct 2865 * @start_addr: adapter address to dump 2866 * @dest: destination kernel buffer 2867 * @length_in_words: length to dump in 4 byte words 2868 * 2869 * Return value: 2870 * 0 on success / -EIO on failure 2871 **/ 2872 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, 2873 u32 start_addr, 2874 __be32 *dest, u32 length_in_words) 2875 { 2876 volatile u32 temp_pcii_reg; 2877 int i, delay = 0; 2878 2879 if (ioa_cfg->sis64) 2880 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr, 2881 dest, length_in_words); 2882 2883 /* Write IOA interrupt reg starting LDUMP state */ 2884 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), 2885 ioa_cfg->regs.set_uproc_interrupt_reg32); 2886 2887 /* Wait for IO debug acknowledge */ 2888 if (ipr_wait_iodbg_ack(ioa_cfg, 2889 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { 2890 dev_err(&ioa_cfg->pdev->dev, 2891 "IOA dump long data transfer timeout\n"); 2892 return -EIO; 2893 } 2894 2895 /* Signal LDUMP interlocked - clear IO debug ack */ 2896 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2897 ioa_cfg->regs.clr_interrupt_reg); 2898 2899 /* Write Mailbox with starting address */ 2900 writel(start_addr, ioa_cfg->ioa_mailbox); 2901 2902 /* Signal address valid - clear IOA Reset alert */ 2903 writel(IPR_UPROCI_RESET_ALERT, 2904 ioa_cfg->regs.clr_uproc_interrupt_reg32); 2905 2906 for (i = 0; i < length_in_words; i++) { 2907 /* Wait for IO debug acknowledge */ 2908 if (ipr_wait_iodbg_ack(ioa_cfg, 2909 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { 2910 dev_err(&ioa_cfg->pdev->dev, 2911 "IOA dump short data transfer timeout\n"); 2912 return -EIO; 2913 } 2914 2915 /* Read data from mailbox and increment destination pointer */ 2916 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); 2917 dest++; 2918 2919 /* For all but the last word of data, signal data received */ 2920 if (i < (length_in_words - 1)) { 2921 /* Signal dump data received - Clear IO debug Ack */ 2922 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2923 ioa_cfg->regs.clr_interrupt_reg); 2924 } 2925 } 2926 2927 /* Signal end of block transfer. Set reset alert then clear IO debug ack */ 2928 writel(IPR_UPROCI_RESET_ALERT, 2929 ioa_cfg->regs.set_uproc_interrupt_reg32); 2930 2931 writel(IPR_UPROCI_IO_DEBUG_ALERT, 2932 ioa_cfg->regs.clr_uproc_interrupt_reg32); 2933 2934 /* Signal dump data received - Clear IO debug Ack */ 2935 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2936 ioa_cfg->regs.clr_interrupt_reg); 2937 2938 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ 2939 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { 2940 temp_pcii_reg = 2941 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); 2942 2943 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) 2944 return 0; 2945 2946 udelay(10); 2947 delay += 10; 2948 } 2949 2950 return 0; 2951 } 2952 2953 #ifdef CONFIG_SCSI_IPR_DUMP 2954 /** 2955 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer 2956 * @ioa_cfg: ioa config struct 2957 * @pci_address: adapter address 2958 * @length: length of data to copy 2959 * 2960 * Copy data from PCI adapter to kernel buffer. 2961 * Note: length MUST be a 4 byte multiple 2962 * Return value: 2963 * 0 on success / other on failure 2964 **/ 2965 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, 2966 unsigned long pci_address, u32 length) 2967 { 2968 int bytes_copied = 0; 2969 int cur_len, rc, rem_len, rem_page_len, max_dump_size; 2970 __be32 *page; 2971 unsigned long lock_flags = 0; 2972 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; 2973 2974 if (ioa_cfg->sis64) 2975 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE; 2976 else 2977 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE; 2978 2979 while (bytes_copied < length && 2980 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) { 2981 if (ioa_dump->page_offset >= PAGE_SIZE || 2982 ioa_dump->page_offset == 0) { 2983 page = (__be32 *)__get_free_page(GFP_ATOMIC); 2984 2985 if (!page) { 2986 ipr_trace; 2987 return bytes_copied; 2988 } 2989 2990 ioa_dump->page_offset = 0; 2991 ioa_dump->ioa_data[ioa_dump->next_page_index] = page; 2992 ioa_dump->next_page_index++; 2993 } else 2994 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; 2995 2996 rem_len = length - bytes_copied; 2997 rem_page_len = PAGE_SIZE - ioa_dump->page_offset; 2998 cur_len = min(rem_len, rem_page_len); 2999 3000 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3001 if (ioa_cfg->sdt_state == ABORT_DUMP) { 3002 rc = -EIO; 3003 } else { 3004 rc = ipr_get_ldump_data_section(ioa_cfg, 3005 pci_address + bytes_copied, 3006 &page[ioa_dump->page_offset / 4], 3007 (cur_len / sizeof(u32))); 3008 } 3009 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3010 3011 if (!rc) { 3012 ioa_dump->page_offset += cur_len; 3013 bytes_copied += cur_len; 3014 } else { 3015 ipr_trace; 3016 break; 3017 } 3018 schedule(); 3019 } 3020 3021 return bytes_copied; 3022 } 3023 3024 /** 3025 * ipr_init_dump_entry_hdr - Initialize a dump entry header. 3026 * @hdr: dump entry header struct 3027 * 3028 * Return value: 3029 * nothing 3030 **/ 3031 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) 3032 { 3033 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; 3034 hdr->num_elems = 1; 3035 hdr->offset = sizeof(*hdr); 3036 hdr->status = IPR_DUMP_STATUS_SUCCESS; 3037 } 3038 3039 /** 3040 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. 3041 * @ioa_cfg: ioa config struct 3042 * @driver_dump: driver dump struct 3043 * 3044 * Return value: 3045 * nothing 3046 **/ 3047 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, 3048 struct ipr_driver_dump *driver_dump) 3049 { 3050 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 3051 3052 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); 3053 driver_dump->ioa_type_entry.hdr.len = 3054 sizeof(struct ipr_dump_ioa_type_entry) - 3055 sizeof(struct ipr_dump_entry_header); 3056 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 3057 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; 3058 driver_dump->ioa_type_entry.type = ioa_cfg->type; 3059 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | 3060 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | 3061 ucode_vpd->minor_release[1]; 3062 driver_dump->hdr.num_entries++; 3063 } 3064 3065 /** 3066 * ipr_dump_version_data - Fill in the driver version in the dump. 3067 * @ioa_cfg: ioa config struct 3068 * @driver_dump: driver dump struct 3069 * 3070 * Return value: 3071 * nothing 3072 **/ 3073 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, 3074 struct ipr_driver_dump *driver_dump) 3075 { 3076 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); 3077 driver_dump->version_entry.hdr.len = 3078 sizeof(struct ipr_dump_version_entry) - 3079 sizeof(struct ipr_dump_entry_header); 3080 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 3081 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; 3082 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); 3083 driver_dump->hdr.num_entries++; 3084 } 3085 3086 /** 3087 * ipr_dump_trace_data - Fill in the IOA trace in the dump. 3088 * @ioa_cfg: ioa config struct 3089 * @driver_dump: driver dump struct 3090 * 3091 * Return value: 3092 * nothing 3093 **/ 3094 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, 3095 struct ipr_driver_dump *driver_dump) 3096 { 3097 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); 3098 driver_dump->trace_entry.hdr.len = 3099 sizeof(struct ipr_dump_trace_entry) - 3100 sizeof(struct ipr_dump_entry_header); 3101 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 3102 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; 3103 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); 3104 driver_dump->hdr.num_entries++; 3105 } 3106 3107 /** 3108 * ipr_dump_location_data - Fill in the IOA location in the dump. 3109 * @ioa_cfg: ioa config struct 3110 * @driver_dump: driver dump struct 3111 * 3112 * Return value: 3113 * nothing 3114 **/ 3115 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, 3116 struct ipr_driver_dump *driver_dump) 3117 { 3118 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); 3119 driver_dump->location_entry.hdr.len = 3120 sizeof(struct ipr_dump_location_entry) - 3121 sizeof(struct ipr_dump_entry_header); 3122 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 3123 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; 3124 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev)); 3125 driver_dump->hdr.num_entries++; 3126 } 3127 3128 /** 3129 * ipr_get_ioa_dump - Perform a dump of the driver and adapter. 3130 * @ioa_cfg: ioa config struct 3131 * @dump: dump struct 3132 * 3133 * Return value: 3134 * nothing 3135 **/ 3136 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) 3137 { 3138 unsigned long start_addr, sdt_word; 3139 unsigned long lock_flags = 0; 3140 struct ipr_driver_dump *driver_dump = &dump->driver_dump; 3141 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; 3142 u32 num_entries, max_num_entries, start_off, end_off; 3143 u32 max_dump_size, bytes_to_copy, bytes_copied, rc; 3144 struct ipr_sdt *sdt; 3145 int valid = 1; 3146 int i; 3147 3148 ENTER; 3149 3150 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3151 3152 if (ioa_cfg->sdt_state != READ_DUMP) { 3153 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3154 return; 3155 } 3156 3157 if (ioa_cfg->sis64) { 3158 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3159 ssleep(IPR_DUMP_DELAY_SECONDS); 3160 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3161 } 3162 3163 start_addr = readl(ioa_cfg->ioa_mailbox); 3164 3165 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) { 3166 dev_err(&ioa_cfg->pdev->dev, 3167 "Invalid dump table format: %lx\n", start_addr); 3168 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3169 return; 3170 } 3171 3172 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); 3173 3174 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; 3175 3176 /* Initialize the overall dump header */ 3177 driver_dump->hdr.len = sizeof(struct ipr_driver_dump); 3178 driver_dump->hdr.num_entries = 1; 3179 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); 3180 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; 3181 driver_dump->hdr.os = IPR_DUMP_OS_LINUX; 3182 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; 3183 3184 ipr_dump_version_data(ioa_cfg, driver_dump); 3185 ipr_dump_location_data(ioa_cfg, driver_dump); 3186 ipr_dump_ioa_type_data(ioa_cfg, driver_dump); 3187 ipr_dump_trace_data(ioa_cfg, driver_dump); 3188 3189 /* Update dump_header */ 3190 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); 3191 3192 /* IOA Dump entry */ 3193 ipr_init_dump_entry_hdr(&ioa_dump->hdr); 3194 ioa_dump->hdr.len = 0; 3195 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 3196 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; 3197 3198 /* First entries in sdt are actually a list of dump addresses and 3199 lengths to gather the real dump data. sdt represents the pointer 3200 to the ioa generated dump table. Dump data will be extracted based 3201 on entries in this table */ 3202 sdt = &ioa_dump->sdt; 3203 3204 if (ioa_cfg->sis64) { 3205 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES; 3206 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE; 3207 } else { 3208 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES; 3209 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE; 3210 } 3211 3212 bytes_to_copy = offsetof(struct ipr_sdt, entry) + 3213 (max_num_entries * sizeof(struct ipr_sdt_entry)); 3214 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, 3215 bytes_to_copy / sizeof(__be32)); 3216 3217 /* Smart Dump table is ready to use and the first entry is valid */ 3218 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) && 3219 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) { 3220 dev_err(&ioa_cfg->pdev->dev, 3221 "Dump of IOA failed. Dump table not valid: %d, %X.\n", 3222 rc, be32_to_cpu(sdt->hdr.state)); 3223 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; 3224 ioa_cfg->sdt_state = DUMP_OBTAINED; 3225 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3226 return; 3227 } 3228 3229 num_entries = be32_to_cpu(sdt->hdr.num_entries_used); 3230 3231 if (num_entries > max_num_entries) 3232 num_entries = max_num_entries; 3233 3234 /* Update dump length to the actual data to be copied */ 3235 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header); 3236 if (ioa_cfg->sis64) 3237 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry); 3238 else 3239 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry); 3240 3241 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3242 3243 for (i = 0; i < num_entries; i++) { 3244 if (ioa_dump->hdr.len > max_dump_size) { 3245 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 3246 break; 3247 } 3248 3249 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { 3250 sdt_word = be32_to_cpu(sdt->entry[i].start_token); 3251 if (ioa_cfg->sis64) 3252 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token); 3253 else { 3254 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; 3255 end_off = be32_to_cpu(sdt->entry[i].end_token); 3256 3257 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) 3258 bytes_to_copy = end_off - start_off; 3259 else 3260 valid = 0; 3261 } 3262 if (valid) { 3263 if (bytes_to_copy > max_dump_size) { 3264 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; 3265 continue; 3266 } 3267 3268 /* Copy data from adapter to driver buffers */ 3269 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, 3270 bytes_to_copy); 3271 3272 ioa_dump->hdr.len += bytes_copied; 3273 3274 if (bytes_copied != bytes_to_copy) { 3275 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 3276 break; 3277 } 3278 } 3279 } 3280 } 3281 3282 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); 3283 3284 /* Update dump_header */ 3285 driver_dump->hdr.len += ioa_dump->hdr.len; 3286 wmb(); 3287 ioa_cfg->sdt_state = DUMP_OBTAINED; 3288 LEAVE; 3289 } 3290 3291 #else 3292 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0) 3293 #endif 3294 3295 /** 3296 * ipr_release_dump - Free adapter dump memory 3297 * @kref: kref struct 3298 * 3299 * Return value: 3300 * nothing 3301 **/ 3302 static void ipr_release_dump(struct kref *kref) 3303 { 3304 struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref); 3305 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; 3306 unsigned long lock_flags = 0; 3307 int i; 3308 3309 ENTER; 3310 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3311 ioa_cfg->dump = NULL; 3312 ioa_cfg->sdt_state = INACTIVE; 3313 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3314 3315 for (i = 0; i < dump->ioa_dump.next_page_index; i++) 3316 free_page((unsigned long) dump->ioa_dump.ioa_data[i]); 3317 3318 vfree(dump->ioa_dump.ioa_data); 3319 kfree(dump); 3320 LEAVE; 3321 } 3322 3323 static void ipr_add_remove_thread(struct work_struct *work) 3324 { 3325 unsigned long lock_flags; 3326 struct ipr_resource_entry *res; 3327 struct scsi_device *sdev; 3328 struct ipr_ioa_cfg *ioa_cfg = 3329 container_of(work, struct ipr_ioa_cfg, scsi_add_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 restart: 3337 do { 3338 did_work = 0; 3339 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) { 3340 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3341 return; 3342 } 3343 3344 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3345 if (res->del_from_ml && res->sdev) { 3346 did_work = 1; 3347 sdev = res->sdev; 3348 if (!scsi_device_get(sdev)) { 3349 if (!res->add_to_ml) 3350 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 3351 else 3352 res->del_from_ml = 0; 3353 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3354 scsi_remove_device(sdev); 3355 scsi_device_put(sdev); 3356 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3357 } 3358 break; 3359 } 3360 } 3361 } while (did_work); 3362 3363 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3364 if (res->add_to_ml) { 3365 bus = res->bus; 3366 target = res->target; 3367 lun = res->lun; 3368 res->add_to_ml = 0; 3369 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3370 scsi_add_device(ioa_cfg->host, bus, target, lun); 3371 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3372 goto restart; 3373 } 3374 } 3375 3376 ioa_cfg->scan_done = 1; 3377 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3378 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE); 3379 LEAVE; 3380 } 3381 3382 /** 3383 * ipr_worker_thread - Worker thread 3384 * @work: ioa config struct 3385 * 3386 * Called at task level from a work thread. This function takes care 3387 * of adding and removing device from the mid-layer as configuration 3388 * changes are detected by the adapter. 3389 * 3390 * Return value: 3391 * nothing 3392 **/ 3393 static void ipr_worker_thread(struct work_struct *work) 3394 { 3395 unsigned long lock_flags; 3396 struct ipr_dump *dump; 3397 struct ipr_ioa_cfg *ioa_cfg = 3398 container_of(work, struct ipr_ioa_cfg, work_q); 3399 3400 ENTER; 3401 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3402 3403 if (ioa_cfg->sdt_state == READ_DUMP) { 3404 dump = ioa_cfg->dump; 3405 if (!dump) { 3406 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3407 return; 3408 } 3409 kref_get(&dump->kref); 3410 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3411 ipr_get_ioa_dump(ioa_cfg, dump); 3412 kref_put(&dump->kref, ipr_release_dump); 3413 3414 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3415 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout) 3416 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3417 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3418 return; 3419 } 3420 3421 if (ioa_cfg->scsi_unblock) { 3422 ioa_cfg->scsi_unblock = 0; 3423 ioa_cfg->scsi_blocked = 0; 3424 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3425 scsi_unblock_requests(ioa_cfg->host); 3426 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3427 if (ioa_cfg->scsi_blocked) 3428 scsi_block_requests(ioa_cfg->host); 3429 } 3430 3431 if (!ioa_cfg->scan_enabled) { 3432 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3433 return; 3434 } 3435 3436 schedule_work(&ioa_cfg->scsi_add_work_q); 3437 3438 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3439 LEAVE; 3440 } 3441 3442 #ifdef CONFIG_SCSI_IPR_TRACE 3443 /** 3444 * ipr_read_trace - Dump the adapter trace 3445 * @filp: open sysfs file 3446 * @kobj: kobject struct 3447 * @bin_attr: bin_attribute struct 3448 * @buf: buffer 3449 * @off: offset 3450 * @count: buffer size 3451 * 3452 * Return value: 3453 * number of bytes printed to buffer 3454 **/ 3455 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj, 3456 struct bin_attribute *bin_attr, 3457 char *buf, loff_t off, size_t count) 3458 { 3459 struct device *dev = kobj_to_dev(kobj); 3460 struct Scsi_Host *shost = class_to_shost(dev); 3461 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3462 unsigned long lock_flags = 0; 3463 ssize_t ret; 3464 3465 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3466 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace, 3467 IPR_TRACE_SIZE); 3468 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3469 3470 return ret; 3471 } 3472 3473 static struct bin_attribute ipr_trace_attr = { 3474 .attr = { 3475 .name = "trace", 3476 .mode = S_IRUGO, 3477 }, 3478 .size = 0, 3479 .read = ipr_read_trace, 3480 }; 3481 #endif 3482 3483 /** 3484 * ipr_show_fw_version - Show the firmware version 3485 * @dev: class device struct 3486 * @attr: device attribute (unused) 3487 * @buf: buffer 3488 * 3489 * Return value: 3490 * number of bytes printed to buffer 3491 **/ 3492 static ssize_t ipr_show_fw_version(struct device *dev, 3493 struct device_attribute *attr, char *buf) 3494 { 3495 struct Scsi_Host *shost = class_to_shost(dev); 3496 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3497 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 3498 unsigned long lock_flags = 0; 3499 int len; 3500 3501 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3502 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 3503 ucode_vpd->major_release, ucode_vpd->card_type, 3504 ucode_vpd->minor_release[0], 3505 ucode_vpd->minor_release[1]); 3506 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3507 return len; 3508 } 3509 3510 static struct device_attribute ipr_fw_version_attr = { 3511 .attr = { 3512 .name = "fw_version", 3513 .mode = S_IRUGO, 3514 }, 3515 .show = ipr_show_fw_version, 3516 }; 3517 3518 /** 3519 * ipr_show_log_level - Show the adapter's error logging level 3520 * @dev: class device struct 3521 * @attr: device attribute (unused) 3522 * @buf: buffer 3523 * 3524 * Return value: 3525 * number of bytes printed to buffer 3526 **/ 3527 static ssize_t ipr_show_log_level(struct device *dev, 3528 struct device_attribute *attr, char *buf) 3529 { 3530 struct Scsi_Host *shost = class_to_shost(dev); 3531 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3532 unsigned long lock_flags = 0; 3533 int len; 3534 3535 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3536 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 3537 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3538 return len; 3539 } 3540 3541 /** 3542 * ipr_store_log_level - Change the adapter's error logging level 3543 * @dev: class device struct 3544 * @attr: device attribute (unused) 3545 * @buf: buffer 3546 * @count: buffer size 3547 * 3548 * Return value: 3549 * number of bytes printed to buffer 3550 **/ 3551 static ssize_t ipr_store_log_level(struct device *dev, 3552 struct device_attribute *attr, 3553 const char *buf, size_t count) 3554 { 3555 struct Scsi_Host *shost = class_to_shost(dev); 3556 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3557 unsigned long lock_flags = 0; 3558 3559 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3560 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 3561 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3562 return strlen(buf); 3563 } 3564 3565 static struct device_attribute ipr_log_level_attr = { 3566 .attr = { 3567 .name = "log_level", 3568 .mode = S_IRUGO | S_IWUSR, 3569 }, 3570 .show = ipr_show_log_level, 3571 .store = ipr_store_log_level 3572 }; 3573 3574 /** 3575 * ipr_store_diagnostics - IOA Diagnostics interface 3576 * @dev: device struct 3577 * @attr: device attribute (unused) 3578 * @buf: buffer 3579 * @count: buffer size 3580 * 3581 * This function will reset the adapter and wait a reasonable 3582 * amount of time for any errors that the adapter might log. 3583 * 3584 * Return value: 3585 * count on success / other on failure 3586 **/ 3587 static ssize_t ipr_store_diagnostics(struct device *dev, 3588 struct device_attribute *attr, 3589 const char *buf, size_t count) 3590 { 3591 struct Scsi_Host *shost = class_to_shost(dev); 3592 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3593 unsigned long lock_flags = 0; 3594 int rc = count; 3595 3596 if (!capable(CAP_SYS_ADMIN)) 3597 return -EACCES; 3598 3599 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3600 while (ioa_cfg->in_reset_reload) { 3601 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3602 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3603 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3604 } 3605 3606 ioa_cfg->errors_logged = 0; 3607 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3608 3609 if (ioa_cfg->in_reset_reload) { 3610 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3611 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3612 3613 /* Wait for a second for any errors to be logged */ 3614 msleep(1000); 3615 } else { 3616 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3617 return -EIO; 3618 } 3619 3620 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3621 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 3622 rc = -EIO; 3623 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3624 3625 return rc; 3626 } 3627 3628 static struct device_attribute ipr_diagnostics_attr = { 3629 .attr = { 3630 .name = "run_diagnostics", 3631 .mode = S_IWUSR, 3632 }, 3633 .store = ipr_store_diagnostics 3634 }; 3635 3636 /** 3637 * ipr_show_adapter_state - Show the adapter's state 3638 * @dev: device struct 3639 * @attr: device attribute (unused) 3640 * @buf: buffer 3641 * 3642 * Return value: 3643 * number of bytes printed to buffer 3644 **/ 3645 static ssize_t ipr_show_adapter_state(struct device *dev, 3646 struct device_attribute *attr, char *buf) 3647 { 3648 struct Scsi_Host *shost = class_to_shost(dev); 3649 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3650 unsigned long lock_flags = 0; 3651 int len; 3652 3653 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3654 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 3655 len = snprintf(buf, PAGE_SIZE, "offline\n"); 3656 else 3657 len = snprintf(buf, PAGE_SIZE, "online\n"); 3658 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3659 return len; 3660 } 3661 3662 /** 3663 * ipr_store_adapter_state - Change adapter state 3664 * @dev: device struct 3665 * @attr: device attribute (unused) 3666 * @buf: buffer 3667 * @count: buffer size 3668 * 3669 * This function will change the adapter's state. 3670 * 3671 * Return value: 3672 * count on success / other on failure 3673 **/ 3674 static ssize_t ipr_store_adapter_state(struct device *dev, 3675 struct device_attribute *attr, 3676 const char *buf, size_t count) 3677 { 3678 struct Scsi_Host *shost = class_to_shost(dev); 3679 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3680 unsigned long lock_flags; 3681 int result = count, i; 3682 3683 if (!capable(CAP_SYS_ADMIN)) 3684 return -EACCES; 3685 3686 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3687 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && 3688 !strncmp(buf, "online", 6)) { 3689 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 3690 spin_lock(&ioa_cfg->hrrq[i]._lock); 3691 ioa_cfg->hrrq[i].ioa_is_dead = 0; 3692 spin_unlock(&ioa_cfg->hrrq[i]._lock); 3693 } 3694 wmb(); 3695 ioa_cfg->reset_retries = 0; 3696 ioa_cfg->in_ioa_bringdown = 0; 3697 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3698 } 3699 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3700 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3701 3702 return result; 3703 } 3704 3705 static struct device_attribute ipr_ioa_state_attr = { 3706 .attr = { 3707 .name = "online_state", 3708 .mode = S_IRUGO | S_IWUSR, 3709 }, 3710 .show = ipr_show_adapter_state, 3711 .store = ipr_store_adapter_state 3712 }; 3713 3714 /** 3715 * ipr_store_reset_adapter - Reset the adapter 3716 * @dev: device struct 3717 * @attr: device attribute (unused) 3718 * @buf: buffer 3719 * @count: buffer size 3720 * 3721 * This function will reset the adapter. 3722 * 3723 * Return value: 3724 * count on success / other on failure 3725 **/ 3726 static ssize_t ipr_store_reset_adapter(struct device *dev, 3727 struct device_attribute *attr, 3728 const char *buf, size_t count) 3729 { 3730 struct Scsi_Host *shost = class_to_shost(dev); 3731 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3732 unsigned long lock_flags; 3733 int result = count; 3734 3735 if (!capable(CAP_SYS_ADMIN)) 3736 return -EACCES; 3737 3738 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3739 if (!ioa_cfg->in_reset_reload) 3740 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3741 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3742 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3743 3744 return result; 3745 } 3746 3747 static struct device_attribute ipr_ioa_reset_attr = { 3748 .attr = { 3749 .name = "reset_host", 3750 .mode = S_IWUSR, 3751 }, 3752 .store = ipr_store_reset_adapter 3753 }; 3754 3755 static int ipr_iopoll(struct irq_poll *iop, int budget); 3756 /** 3757 * ipr_show_iopoll_weight - Show ipr polling mode 3758 * @dev: class device struct 3759 * @attr: device attribute (unused) 3760 * @buf: buffer 3761 * 3762 * Return value: 3763 * number of bytes printed to buffer 3764 **/ 3765 static ssize_t ipr_show_iopoll_weight(struct device *dev, 3766 struct device_attribute *attr, char *buf) 3767 { 3768 struct Scsi_Host *shost = class_to_shost(dev); 3769 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3770 unsigned long lock_flags = 0; 3771 int len; 3772 3773 spin_lock_irqsave(shost->host_lock, lock_flags); 3774 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight); 3775 spin_unlock_irqrestore(shost->host_lock, lock_flags); 3776 3777 return len; 3778 } 3779 3780 /** 3781 * ipr_store_iopoll_weight - Change the adapter's polling mode 3782 * @dev: class device struct 3783 * @attr: device attribute (unused) 3784 * @buf: buffer 3785 * @count: buffer size 3786 * 3787 * Return value: 3788 * number of bytes printed to buffer 3789 **/ 3790 static ssize_t ipr_store_iopoll_weight(struct device *dev, 3791 struct device_attribute *attr, 3792 const char *buf, size_t count) 3793 { 3794 struct Scsi_Host *shost = class_to_shost(dev); 3795 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3796 unsigned long user_iopoll_weight; 3797 unsigned long lock_flags = 0; 3798 int i; 3799 3800 if (!ioa_cfg->sis64) { 3801 dev_info(&ioa_cfg->pdev->dev, "irq_poll not supported on this adapter\n"); 3802 return -EINVAL; 3803 } 3804 if (kstrtoul(buf, 10, &user_iopoll_weight)) 3805 return -EINVAL; 3806 3807 if (user_iopoll_weight > 256) { 3808 dev_info(&ioa_cfg->pdev->dev, "Invalid irq_poll weight. It must be less than 256\n"); 3809 return -EINVAL; 3810 } 3811 3812 if (user_iopoll_weight == ioa_cfg->iopoll_weight) { 3813 dev_info(&ioa_cfg->pdev->dev, "Current irq_poll weight has the same weight\n"); 3814 return strlen(buf); 3815 } 3816 3817 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 3818 for (i = 1; i < ioa_cfg->hrrq_num; i++) 3819 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll); 3820 } 3821 3822 spin_lock_irqsave(shost->host_lock, lock_flags); 3823 ioa_cfg->iopoll_weight = user_iopoll_weight; 3824 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 3825 for (i = 1; i < ioa_cfg->hrrq_num; i++) { 3826 irq_poll_init(&ioa_cfg->hrrq[i].iopoll, 3827 ioa_cfg->iopoll_weight, ipr_iopoll); 3828 } 3829 } 3830 spin_unlock_irqrestore(shost->host_lock, lock_flags); 3831 3832 return strlen(buf); 3833 } 3834 3835 static struct device_attribute ipr_iopoll_weight_attr = { 3836 .attr = { 3837 .name = "iopoll_weight", 3838 .mode = S_IRUGO | S_IWUSR, 3839 }, 3840 .show = ipr_show_iopoll_weight, 3841 .store = ipr_store_iopoll_weight 3842 }; 3843 3844 /** 3845 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 3846 * @buf_len: buffer length 3847 * 3848 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 3849 * list to use for microcode download 3850 * 3851 * Return value: 3852 * pointer to sglist / NULL on failure 3853 **/ 3854 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 3855 { 3856 int sg_size, order; 3857 struct ipr_sglist *sglist; 3858 3859 /* Get the minimum size per scatter/gather element */ 3860 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 3861 3862 /* Get the actual size per element */ 3863 order = get_order(sg_size); 3864 3865 /* Allocate a scatter/gather list for the DMA */ 3866 sglist = kzalloc(sizeof(struct ipr_sglist), GFP_KERNEL); 3867 if (sglist == NULL) { 3868 ipr_trace; 3869 return NULL; 3870 } 3871 sglist->order = order; 3872 sglist->scatterlist = sgl_alloc_order(buf_len, order, false, GFP_KERNEL, 3873 &sglist->num_sg); 3874 if (!sglist->scatterlist) { 3875 kfree(sglist); 3876 return NULL; 3877 } 3878 3879 return sglist; 3880 } 3881 3882 /** 3883 * ipr_free_ucode_buffer - Frees a microcode download buffer 3884 * @sglist: scatter/gather list pointer 3885 * 3886 * Free a DMA'able ucode download buffer previously allocated with 3887 * ipr_alloc_ucode_buffer 3888 * 3889 * Return value: 3890 * nothing 3891 **/ 3892 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 3893 { 3894 sgl_free_order(sglist->scatterlist, sglist->order); 3895 kfree(sglist); 3896 } 3897 3898 /** 3899 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 3900 * @sglist: scatter/gather list pointer 3901 * @buffer: buffer pointer 3902 * @len: buffer length 3903 * 3904 * Copy a microcode image from a user buffer into a buffer allocated by 3905 * ipr_alloc_ucode_buffer 3906 * 3907 * Return value: 3908 * 0 on success / other on failure 3909 **/ 3910 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 3911 u8 *buffer, u32 len) 3912 { 3913 int bsize_elem, i, result = 0; 3914 struct scatterlist *sg; 3915 void *kaddr; 3916 3917 /* Determine the actual number of bytes per element */ 3918 bsize_elem = PAGE_SIZE * (1 << sglist->order); 3919 3920 sg = sglist->scatterlist; 3921 3922 for (i = 0; i < (len / bsize_elem); i++, sg = sg_next(sg), 3923 buffer += bsize_elem) { 3924 struct page *page = sg_page(sg); 3925 3926 kaddr = kmap(page); 3927 memcpy(kaddr, buffer, bsize_elem); 3928 kunmap(page); 3929 3930 sg->length = bsize_elem; 3931 3932 if (result != 0) { 3933 ipr_trace; 3934 return result; 3935 } 3936 } 3937 3938 if (len % bsize_elem) { 3939 struct page *page = sg_page(sg); 3940 3941 kaddr = kmap(page); 3942 memcpy(kaddr, buffer, len % bsize_elem); 3943 kunmap(page); 3944 3945 sg->length = len % bsize_elem; 3946 } 3947 3948 sglist->buffer_len = len; 3949 return result; 3950 } 3951 3952 /** 3953 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL 3954 * @ipr_cmd: ipr command struct 3955 * @sglist: scatter/gather list 3956 * 3957 * Builds a microcode download IOA data list (IOADL). 3958 * 3959 **/ 3960 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd, 3961 struct ipr_sglist *sglist) 3962 { 3963 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3964 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 3965 struct scatterlist *scatterlist = sglist->scatterlist; 3966 struct scatterlist *sg; 3967 int i; 3968 3969 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 3970 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3971 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 3972 3973 ioarcb->ioadl_len = 3974 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 3975 for_each_sg(scatterlist, sg, ipr_cmd->dma_use_sg, i) { 3976 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE); 3977 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg)); 3978 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg)); 3979 } 3980 3981 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3982 } 3983 3984 /** 3985 * ipr_build_ucode_ioadl - Build a microcode download IOADL 3986 * @ipr_cmd: ipr command struct 3987 * @sglist: scatter/gather list 3988 * 3989 * Builds a microcode download IOA data list (IOADL). 3990 * 3991 **/ 3992 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, 3993 struct ipr_sglist *sglist) 3994 { 3995 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3996 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 3997 struct scatterlist *scatterlist = sglist->scatterlist; 3998 struct scatterlist *sg; 3999 int i; 4000 4001 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 4002 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4003 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 4004 4005 ioarcb->ioadl_len = 4006 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 4007 4008 for_each_sg(scatterlist, sg, ipr_cmd->dma_use_sg, i) { 4009 ioadl[i].flags_and_data_len = 4010 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(sg)); 4011 ioadl[i].address = 4012 cpu_to_be32(sg_dma_address(sg)); 4013 } 4014 4015 ioadl[i-1].flags_and_data_len |= 4016 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 4017 } 4018 4019 /** 4020 * ipr_update_ioa_ucode - Update IOA's microcode 4021 * @ioa_cfg: ioa config struct 4022 * @sglist: scatter/gather list 4023 * 4024 * Initiate an adapter reset to update the IOA's microcode 4025 * 4026 * Return value: 4027 * 0 on success / -EIO on failure 4028 **/ 4029 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, 4030 struct ipr_sglist *sglist) 4031 { 4032 unsigned long lock_flags; 4033 4034 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4035 while (ioa_cfg->in_reset_reload) { 4036 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4037 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4038 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4039 } 4040 4041 if (ioa_cfg->ucode_sglist) { 4042 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4043 dev_err(&ioa_cfg->pdev->dev, 4044 "Microcode download already in progress\n"); 4045 return -EIO; 4046 } 4047 4048 sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev, 4049 sglist->scatterlist, sglist->num_sg, 4050 DMA_TO_DEVICE); 4051 4052 if (!sglist->num_dma_sg) { 4053 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4054 dev_err(&ioa_cfg->pdev->dev, 4055 "Failed to map microcode download buffer!\n"); 4056 return -EIO; 4057 } 4058 4059 ioa_cfg->ucode_sglist = sglist; 4060 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 4061 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4062 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4063 4064 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4065 ioa_cfg->ucode_sglist = NULL; 4066 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4067 return 0; 4068 } 4069 4070 /** 4071 * ipr_store_update_fw - Update the firmware on the adapter 4072 * @dev: device struct 4073 * @attr: device attribute (unused) 4074 * @buf: buffer 4075 * @count: buffer size 4076 * 4077 * This function will update the firmware on the adapter. 4078 * 4079 * Return value: 4080 * count on success / other on failure 4081 **/ 4082 static ssize_t ipr_store_update_fw(struct device *dev, 4083 struct device_attribute *attr, 4084 const char *buf, size_t count) 4085 { 4086 struct Scsi_Host *shost = class_to_shost(dev); 4087 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4088 struct ipr_ucode_image_header *image_hdr; 4089 const struct firmware *fw_entry; 4090 struct ipr_sglist *sglist; 4091 char fname[100]; 4092 char *src; 4093 char *endline; 4094 int result, dnld_size; 4095 4096 if (!capable(CAP_SYS_ADMIN)) 4097 return -EACCES; 4098 4099 snprintf(fname, sizeof(fname), "%s", buf); 4100 4101 endline = strchr(fname, '\n'); 4102 if (endline) 4103 *endline = '\0'; 4104 4105 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 4106 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 4107 return -EIO; 4108 } 4109 4110 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 4111 4112 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 4113 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 4114 sglist = ipr_alloc_ucode_buffer(dnld_size); 4115 4116 if (!sglist) { 4117 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 4118 release_firmware(fw_entry); 4119 return -ENOMEM; 4120 } 4121 4122 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 4123 4124 if (result) { 4125 dev_err(&ioa_cfg->pdev->dev, 4126 "Microcode buffer copy to DMA buffer failed\n"); 4127 goto out; 4128 } 4129 4130 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n"); 4131 4132 result = ipr_update_ioa_ucode(ioa_cfg, sglist); 4133 4134 if (!result) 4135 result = count; 4136 out: 4137 ipr_free_ucode_buffer(sglist); 4138 release_firmware(fw_entry); 4139 return result; 4140 } 4141 4142 static struct device_attribute ipr_update_fw_attr = { 4143 .attr = { 4144 .name = "update_fw", 4145 .mode = S_IWUSR, 4146 }, 4147 .store = ipr_store_update_fw 4148 }; 4149 4150 /** 4151 * ipr_show_fw_type - Show the adapter's firmware type. 4152 * @dev: class device struct 4153 * @attr: device attribute (unused) 4154 * @buf: buffer 4155 * 4156 * Return value: 4157 * number of bytes printed to buffer 4158 **/ 4159 static ssize_t ipr_show_fw_type(struct device *dev, 4160 struct device_attribute *attr, char *buf) 4161 { 4162 struct Scsi_Host *shost = class_to_shost(dev); 4163 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4164 unsigned long lock_flags = 0; 4165 int len; 4166 4167 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4168 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64); 4169 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4170 return len; 4171 } 4172 4173 static struct device_attribute ipr_ioa_fw_type_attr = { 4174 .attr = { 4175 .name = "fw_type", 4176 .mode = S_IRUGO, 4177 }, 4178 .show = ipr_show_fw_type 4179 }; 4180 4181 static ssize_t ipr_read_async_err_log(struct file *filep, struct kobject *kobj, 4182 struct bin_attribute *bin_attr, char *buf, 4183 loff_t off, size_t count) 4184 { 4185 struct device *cdev = kobj_to_dev(kobj); 4186 struct Scsi_Host *shost = class_to_shost(cdev); 4187 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4188 struct ipr_hostrcb *hostrcb; 4189 unsigned long lock_flags = 0; 4190 int ret; 4191 4192 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4193 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q, 4194 struct ipr_hostrcb, queue); 4195 if (!hostrcb) { 4196 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4197 return 0; 4198 } 4199 ret = memory_read_from_buffer(buf, count, &off, &hostrcb->hcam, 4200 sizeof(hostrcb->hcam)); 4201 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4202 return ret; 4203 } 4204 4205 static ssize_t ipr_next_async_err_log(struct file *filep, struct kobject *kobj, 4206 struct bin_attribute *bin_attr, char *buf, 4207 loff_t off, size_t count) 4208 { 4209 struct device *cdev = kobj_to_dev(kobj); 4210 struct Scsi_Host *shost = class_to_shost(cdev); 4211 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4212 struct ipr_hostrcb *hostrcb; 4213 unsigned long lock_flags = 0; 4214 4215 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4216 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q, 4217 struct ipr_hostrcb, queue); 4218 if (!hostrcb) { 4219 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4220 return count; 4221 } 4222 4223 /* Reclaim hostrcb before exit */ 4224 list_move_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 4225 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4226 return count; 4227 } 4228 4229 static struct bin_attribute ipr_ioa_async_err_log = { 4230 .attr = { 4231 .name = "async_err_log", 4232 .mode = S_IRUGO | S_IWUSR, 4233 }, 4234 .size = 0, 4235 .read = ipr_read_async_err_log, 4236 .write = ipr_next_async_err_log 4237 }; 4238 4239 static struct attribute *ipr_ioa_attrs[] = { 4240 &ipr_fw_version_attr.attr, 4241 &ipr_log_level_attr.attr, 4242 &ipr_diagnostics_attr.attr, 4243 &ipr_ioa_state_attr.attr, 4244 &ipr_ioa_reset_attr.attr, 4245 &ipr_update_fw_attr.attr, 4246 &ipr_ioa_fw_type_attr.attr, 4247 &ipr_iopoll_weight_attr.attr, 4248 NULL, 4249 }; 4250 4251 ATTRIBUTE_GROUPS(ipr_ioa); 4252 4253 #ifdef CONFIG_SCSI_IPR_DUMP 4254 /** 4255 * ipr_read_dump - Dump the adapter 4256 * @filp: open sysfs file 4257 * @kobj: kobject struct 4258 * @bin_attr: bin_attribute struct 4259 * @buf: buffer 4260 * @off: offset 4261 * @count: buffer size 4262 * 4263 * Return value: 4264 * number of bytes printed to buffer 4265 **/ 4266 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj, 4267 struct bin_attribute *bin_attr, 4268 char *buf, loff_t off, size_t count) 4269 { 4270 struct device *cdev = kobj_to_dev(kobj); 4271 struct Scsi_Host *shost = class_to_shost(cdev); 4272 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4273 struct ipr_dump *dump; 4274 unsigned long lock_flags = 0; 4275 char *src; 4276 int len, sdt_end; 4277 size_t rc = count; 4278 4279 if (!capable(CAP_SYS_ADMIN)) 4280 return -EACCES; 4281 4282 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4283 dump = ioa_cfg->dump; 4284 4285 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 4286 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4287 return 0; 4288 } 4289 kref_get(&dump->kref); 4290 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4291 4292 if (off > dump->driver_dump.hdr.len) { 4293 kref_put(&dump->kref, ipr_release_dump); 4294 return 0; 4295 } 4296 4297 if (off + count > dump->driver_dump.hdr.len) { 4298 count = dump->driver_dump.hdr.len - off; 4299 rc = count; 4300 } 4301 4302 if (count && off < sizeof(dump->driver_dump)) { 4303 if (off + count > sizeof(dump->driver_dump)) 4304 len = sizeof(dump->driver_dump) - off; 4305 else 4306 len = count; 4307 src = (u8 *)&dump->driver_dump + off; 4308 memcpy(buf, src, len); 4309 buf += len; 4310 off += len; 4311 count -= len; 4312 } 4313 4314 off -= sizeof(dump->driver_dump); 4315 4316 if (ioa_cfg->sis64) 4317 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) + 4318 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) * 4319 sizeof(struct ipr_sdt_entry)); 4320 else 4321 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) + 4322 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry)); 4323 4324 if (count && off < sdt_end) { 4325 if (off + count > sdt_end) 4326 len = sdt_end - off; 4327 else 4328 len = count; 4329 src = (u8 *)&dump->ioa_dump + off; 4330 memcpy(buf, src, len); 4331 buf += len; 4332 off += len; 4333 count -= len; 4334 } 4335 4336 off -= sdt_end; 4337 4338 while (count) { 4339 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 4340 len = PAGE_ALIGN(off) - off; 4341 else 4342 len = count; 4343 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 4344 src += off & ~PAGE_MASK; 4345 memcpy(buf, src, len); 4346 buf += len; 4347 off += len; 4348 count -= len; 4349 } 4350 4351 kref_put(&dump->kref, ipr_release_dump); 4352 return rc; 4353 } 4354 4355 /** 4356 * ipr_alloc_dump - Prepare for adapter dump 4357 * @ioa_cfg: ioa config struct 4358 * 4359 * Return value: 4360 * 0 on success / other on failure 4361 **/ 4362 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 4363 { 4364 struct ipr_dump *dump; 4365 __be32 **ioa_data; 4366 unsigned long lock_flags = 0; 4367 4368 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); 4369 4370 if (!dump) { 4371 ipr_err("Dump memory allocation failed\n"); 4372 return -ENOMEM; 4373 } 4374 4375 if (ioa_cfg->sis64) 4376 ioa_data = vmalloc(array_size(IPR_FMT3_MAX_NUM_DUMP_PAGES, 4377 sizeof(__be32 *))); 4378 else 4379 ioa_data = vmalloc(array_size(IPR_FMT2_MAX_NUM_DUMP_PAGES, 4380 sizeof(__be32 *))); 4381 4382 if (!ioa_data) { 4383 ipr_err("Dump memory allocation failed\n"); 4384 kfree(dump); 4385 return -ENOMEM; 4386 } 4387 4388 dump->ioa_dump.ioa_data = ioa_data; 4389 4390 kref_init(&dump->kref); 4391 dump->ioa_cfg = ioa_cfg; 4392 4393 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4394 4395 if (INACTIVE != ioa_cfg->sdt_state) { 4396 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4397 vfree(dump->ioa_dump.ioa_data); 4398 kfree(dump); 4399 return 0; 4400 } 4401 4402 ioa_cfg->dump = dump; 4403 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 4404 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) { 4405 ioa_cfg->dump_taken = 1; 4406 schedule_work(&ioa_cfg->work_q); 4407 } 4408 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4409 4410 return 0; 4411 } 4412 4413 /** 4414 * ipr_free_dump - Free adapter dump memory 4415 * @ioa_cfg: ioa config struct 4416 * 4417 * Return value: 4418 * 0 on success / other on failure 4419 **/ 4420 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 4421 { 4422 struct ipr_dump *dump; 4423 unsigned long lock_flags = 0; 4424 4425 ENTER; 4426 4427 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4428 dump = ioa_cfg->dump; 4429 if (!dump) { 4430 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4431 return 0; 4432 } 4433 4434 ioa_cfg->dump = NULL; 4435 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4436 4437 kref_put(&dump->kref, ipr_release_dump); 4438 4439 LEAVE; 4440 return 0; 4441 } 4442 4443 /** 4444 * ipr_write_dump - Setup dump state of adapter 4445 * @filp: open sysfs file 4446 * @kobj: kobject struct 4447 * @bin_attr: bin_attribute struct 4448 * @buf: buffer 4449 * @off: offset 4450 * @count: buffer size 4451 * 4452 * Return value: 4453 * number of bytes printed to buffer 4454 **/ 4455 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj, 4456 struct bin_attribute *bin_attr, 4457 char *buf, loff_t off, size_t count) 4458 { 4459 struct device *cdev = kobj_to_dev(kobj); 4460 struct Scsi_Host *shost = class_to_shost(cdev); 4461 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4462 int rc; 4463 4464 if (!capable(CAP_SYS_ADMIN)) 4465 return -EACCES; 4466 4467 if (buf[0] == '1') 4468 rc = ipr_alloc_dump(ioa_cfg); 4469 else if (buf[0] == '0') 4470 rc = ipr_free_dump(ioa_cfg); 4471 else 4472 return -EINVAL; 4473 4474 if (rc) 4475 return rc; 4476 else 4477 return count; 4478 } 4479 4480 static struct bin_attribute ipr_dump_attr = { 4481 .attr = { 4482 .name = "dump", 4483 .mode = S_IRUSR | S_IWUSR, 4484 }, 4485 .size = 0, 4486 .read = ipr_read_dump, 4487 .write = ipr_write_dump 4488 }; 4489 #else 4490 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 4491 #endif 4492 4493 /** 4494 * ipr_change_queue_depth - Change the device's queue depth 4495 * @sdev: scsi device struct 4496 * @qdepth: depth to set 4497 * 4498 * Return value: 4499 * actual depth set 4500 **/ 4501 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) 4502 { 4503 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4504 struct ipr_resource_entry *res; 4505 unsigned long lock_flags = 0; 4506 4507 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4508 res = (struct ipr_resource_entry *)sdev->hostdata; 4509 4510 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN) 4511 qdepth = IPR_MAX_CMD_PER_ATA_LUN; 4512 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4513 4514 scsi_change_queue_depth(sdev, qdepth); 4515 return sdev->queue_depth; 4516 } 4517 4518 /** 4519 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 4520 * @dev: device struct 4521 * @attr: device attribute structure 4522 * @buf: buffer 4523 * 4524 * Return value: 4525 * number of bytes printed to buffer 4526 **/ 4527 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) 4528 { 4529 struct scsi_device *sdev = to_scsi_device(dev); 4530 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4531 struct ipr_resource_entry *res; 4532 unsigned long lock_flags = 0; 4533 ssize_t len = -ENXIO; 4534 4535 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4536 res = (struct ipr_resource_entry *)sdev->hostdata; 4537 if (res) 4538 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle); 4539 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4540 return len; 4541 } 4542 4543 static struct device_attribute ipr_adapter_handle_attr = { 4544 .attr = { 4545 .name = "adapter_handle", 4546 .mode = S_IRUSR, 4547 }, 4548 .show = ipr_show_adapter_handle 4549 }; 4550 4551 /** 4552 * ipr_show_resource_path - Show the resource path or the resource address for 4553 * this device. 4554 * @dev: device struct 4555 * @attr: device attribute structure 4556 * @buf: buffer 4557 * 4558 * Return value: 4559 * number of bytes printed to buffer 4560 **/ 4561 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf) 4562 { 4563 struct scsi_device *sdev = to_scsi_device(dev); 4564 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4565 struct ipr_resource_entry *res; 4566 unsigned long lock_flags = 0; 4567 ssize_t len = -ENXIO; 4568 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4569 4570 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4571 res = (struct ipr_resource_entry *)sdev->hostdata; 4572 if (res && ioa_cfg->sis64) 4573 len = snprintf(buf, PAGE_SIZE, "%s\n", 4574 __ipr_format_res_path(res->res_path, buffer, 4575 sizeof(buffer))); 4576 else if (res) 4577 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no, 4578 res->bus, res->target, res->lun); 4579 4580 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4581 return len; 4582 } 4583 4584 static struct device_attribute ipr_resource_path_attr = { 4585 .attr = { 4586 .name = "resource_path", 4587 .mode = S_IRUGO, 4588 }, 4589 .show = ipr_show_resource_path 4590 }; 4591 4592 /** 4593 * ipr_show_device_id - Show the device_id for this device. 4594 * @dev: device struct 4595 * @attr: device attribute structure 4596 * @buf: buffer 4597 * 4598 * Return value: 4599 * number of bytes printed to buffer 4600 **/ 4601 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf) 4602 { 4603 struct scsi_device *sdev = to_scsi_device(dev); 4604 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4605 struct ipr_resource_entry *res; 4606 unsigned long lock_flags = 0; 4607 ssize_t len = -ENXIO; 4608 4609 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4610 res = (struct ipr_resource_entry *)sdev->hostdata; 4611 if (res && ioa_cfg->sis64) 4612 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id)); 4613 else if (res) 4614 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn); 4615 4616 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4617 return len; 4618 } 4619 4620 static struct device_attribute ipr_device_id_attr = { 4621 .attr = { 4622 .name = "device_id", 4623 .mode = S_IRUGO, 4624 }, 4625 .show = ipr_show_device_id 4626 }; 4627 4628 /** 4629 * ipr_show_resource_type - Show the resource type for this device. 4630 * @dev: device struct 4631 * @attr: device attribute structure 4632 * @buf: buffer 4633 * 4634 * Return value: 4635 * number of bytes printed to buffer 4636 **/ 4637 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf) 4638 { 4639 struct scsi_device *sdev = to_scsi_device(dev); 4640 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4641 struct ipr_resource_entry *res; 4642 unsigned long lock_flags = 0; 4643 ssize_t len = -ENXIO; 4644 4645 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4646 res = (struct ipr_resource_entry *)sdev->hostdata; 4647 4648 if (res) 4649 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type); 4650 4651 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4652 return len; 4653 } 4654 4655 static struct device_attribute ipr_resource_type_attr = { 4656 .attr = { 4657 .name = "resource_type", 4658 .mode = S_IRUGO, 4659 }, 4660 .show = ipr_show_resource_type 4661 }; 4662 4663 /** 4664 * ipr_show_raw_mode - Show the adapter's raw mode 4665 * @dev: class device struct 4666 * @attr: device attribute (unused) 4667 * @buf: buffer 4668 * 4669 * Return value: 4670 * number of bytes printed to buffer 4671 **/ 4672 static ssize_t ipr_show_raw_mode(struct device *dev, 4673 struct device_attribute *attr, char *buf) 4674 { 4675 struct scsi_device *sdev = to_scsi_device(dev); 4676 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4677 struct ipr_resource_entry *res; 4678 unsigned long lock_flags = 0; 4679 ssize_t len; 4680 4681 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4682 res = (struct ipr_resource_entry *)sdev->hostdata; 4683 if (res) 4684 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode); 4685 else 4686 len = -ENXIO; 4687 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4688 return len; 4689 } 4690 4691 /** 4692 * ipr_store_raw_mode - Change the adapter's raw mode 4693 * @dev: class device struct 4694 * @attr: device attribute (unused) 4695 * @buf: buffer 4696 * @count: buffer size 4697 * 4698 * Return value: 4699 * number of bytes printed to buffer 4700 **/ 4701 static ssize_t ipr_store_raw_mode(struct device *dev, 4702 struct device_attribute *attr, 4703 const char *buf, size_t count) 4704 { 4705 struct scsi_device *sdev = to_scsi_device(dev); 4706 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4707 struct ipr_resource_entry *res; 4708 unsigned long lock_flags = 0; 4709 ssize_t len; 4710 4711 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4712 res = (struct ipr_resource_entry *)sdev->hostdata; 4713 if (res) { 4714 if (ipr_is_af_dasd_device(res)) { 4715 res->raw_mode = simple_strtoul(buf, NULL, 10); 4716 len = strlen(buf); 4717 if (res->sdev) 4718 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n", 4719 res->raw_mode ? "enabled" : "disabled"); 4720 } else 4721 len = -EINVAL; 4722 } else 4723 len = -ENXIO; 4724 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4725 return len; 4726 } 4727 4728 static struct device_attribute ipr_raw_mode_attr = { 4729 .attr = { 4730 .name = "raw_mode", 4731 .mode = S_IRUGO | S_IWUSR, 4732 }, 4733 .show = ipr_show_raw_mode, 4734 .store = ipr_store_raw_mode 4735 }; 4736 4737 static struct attribute *ipr_dev_attrs[] = { 4738 &ipr_adapter_handle_attr.attr, 4739 &ipr_resource_path_attr.attr, 4740 &ipr_device_id_attr.attr, 4741 &ipr_resource_type_attr.attr, 4742 &ipr_raw_mode_attr.attr, 4743 NULL, 4744 }; 4745 4746 ATTRIBUTE_GROUPS(ipr_dev); 4747 4748 /** 4749 * ipr_biosparam - Return the HSC mapping 4750 * @sdev: scsi device struct 4751 * @block_device: block device pointer 4752 * @capacity: capacity of the device 4753 * @parm: Array containing returned HSC values. 4754 * 4755 * This function generates the HSC parms that fdisk uses. 4756 * We want to make sure we return something that places partitions 4757 * on 4k boundaries for best performance with the IOA. 4758 * 4759 * Return value: 4760 * 0 on success 4761 **/ 4762 static int ipr_biosparam(struct scsi_device *sdev, 4763 struct block_device *block_device, 4764 sector_t capacity, int *parm) 4765 { 4766 int heads, sectors; 4767 sector_t cylinders; 4768 4769 heads = 128; 4770 sectors = 32; 4771 4772 cylinders = capacity; 4773 sector_div(cylinders, (128 * 32)); 4774 4775 /* return result */ 4776 parm[0] = heads; 4777 parm[1] = sectors; 4778 parm[2] = cylinders; 4779 4780 return 0; 4781 } 4782 4783 /** 4784 * ipr_find_starget - Find target based on bus/target. 4785 * @starget: scsi target struct 4786 * 4787 * Return value: 4788 * resource entry pointer if found / NULL if not found 4789 **/ 4790 static struct ipr_resource_entry *ipr_find_starget(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_resource_entry *res; 4795 4796 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4797 if ((res->bus == starget->channel) && 4798 (res->target == starget->id)) { 4799 return res; 4800 } 4801 } 4802 4803 return NULL; 4804 } 4805 4806 static struct ata_port_info sata_port_info; 4807 4808 /** 4809 * ipr_target_alloc - Prepare for commands to a SCSI target 4810 * @starget: scsi target struct 4811 * 4812 * If the device is a SATA device, this function allocates an 4813 * ATA port with libata, else it does nothing. 4814 * 4815 * Return value: 4816 * 0 on success / non-0 on failure 4817 **/ 4818 static int ipr_target_alloc(struct scsi_target *starget) 4819 { 4820 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4821 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4822 struct ipr_sata_port *sata_port; 4823 struct ata_port *ap; 4824 struct ipr_resource_entry *res; 4825 unsigned long lock_flags; 4826 4827 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4828 res = ipr_find_starget(starget); 4829 starget->hostdata = NULL; 4830 4831 if (res && ipr_is_gata(res)) { 4832 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4833 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL); 4834 if (!sata_port) 4835 return -ENOMEM; 4836 4837 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost); 4838 if (ap) { 4839 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4840 sata_port->ioa_cfg = ioa_cfg; 4841 sata_port->ap = ap; 4842 sata_port->res = res; 4843 4844 res->sata_port = sata_port; 4845 ap->private_data = sata_port; 4846 starget->hostdata = sata_port; 4847 } else { 4848 kfree(sata_port); 4849 return -ENOMEM; 4850 } 4851 } 4852 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4853 4854 return 0; 4855 } 4856 4857 /** 4858 * ipr_target_destroy - Destroy a SCSI target 4859 * @starget: scsi target struct 4860 * 4861 * If the device was a SATA device, this function frees the libata 4862 * ATA port, else it does nothing. 4863 * 4864 **/ 4865 static void ipr_target_destroy(struct scsi_target *starget) 4866 { 4867 struct ipr_sata_port *sata_port = starget->hostdata; 4868 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4869 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4870 4871 if (ioa_cfg->sis64) { 4872 if (!ipr_find_starget(starget)) { 4873 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS) 4874 clear_bit(starget->id, ioa_cfg->array_ids); 4875 else if (starget->channel == IPR_VSET_VIRTUAL_BUS) 4876 clear_bit(starget->id, ioa_cfg->vset_ids); 4877 else if (starget->channel == 0) 4878 clear_bit(starget->id, ioa_cfg->target_ids); 4879 } 4880 } 4881 4882 if (sata_port) { 4883 starget->hostdata = NULL; 4884 ata_sas_port_destroy(sata_port->ap); 4885 kfree(sata_port); 4886 } 4887 } 4888 4889 /** 4890 * ipr_find_sdev - Find device based on bus/target/lun. 4891 * @sdev: scsi device struct 4892 * 4893 * Return value: 4894 * resource entry pointer if found / NULL if not found 4895 **/ 4896 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev) 4897 { 4898 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4899 struct ipr_resource_entry *res; 4900 4901 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4902 if ((res->bus == sdev->channel) && 4903 (res->target == sdev->id) && 4904 (res->lun == sdev->lun)) 4905 return res; 4906 } 4907 4908 return NULL; 4909 } 4910 4911 /** 4912 * ipr_slave_destroy - Unconfigure a SCSI device 4913 * @sdev: scsi device struct 4914 * 4915 * Return value: 4916 * nothing 4917 **/ 4918 static void ipr_slave_destroy(struct scsi_device *sdev) 4919 { 4920 struct ipr_resource_entry *res; 4921 struct ipr_ioa_cfg *ioa_cfg; 4922 unsigned long lock_flags = 0; 4923 4924 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4925 4926 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4927 res = (struct ipr_resource_entry *) sdev->hostdata; 4928 if (res) { 4929 if (res->sata_port) 4930 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE; 4931 sdev->hostdata = NULL; 4932 res->sdev = NULL; 4933 res->sata_port = NULL; 4934 } 4935 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4936 } 4937 4938 /** 4939 * ipr_slave_configure - Configure a SCSI device 4940 * @sdev: scsi device struct 4941 * 4942 * This function configures the specified scsi device. 4943 * 4944 * Return value: 4945 * 0 on success 4946 **/ 4947 static int ipr_slave_configure(struct scsi_device *sdev) 4948 { 4949 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4950 struct ipr_resource_entry *res; 4951 struct ata_port *ap = NULL; 4952 unsigned long lock_flags = 0; 4953 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4954 4955 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4956 res = sdev->hostdata; 4957 if (res) { 4958 if (ipr_is_af_dasd_device(res)) 4959 sdev->type = TYPE_RAID; 4960 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { 4961 sdev->scsi_level = 4; 4962 sdev->no_uld_attach = 1; 4963 } 4964 if (ipr_is_vset_device(res)) { 4965 sdev->scsi_level = SCSI_SPC_3; 4966 sdev->no_report_opcodes = 1; 4967 blk_queue_rq_timeout(sdev->request_queue, 4968 IPR_VSET_RW_TIMEOUT); 4969 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); 4970 } 4971 if (ipr_is_gata(res) && res->sata_port) 4972 ap = res->sata_port->ap; 4973 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4974 4975 if (ap) { 4976 scsi_change_queue_depth(sdev, IPR_MAX_CMD_PER_ATA_LUN); 4977 ata_sas_slave_configure(sdev, ap); 4978 } 4979 4980 if (ioa_cfg->sis64) 4981 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n", 4982 ipr_format_res_path(ioa_cfg, 4983 res->res_path, buffer, sizeof(buffer))); 4984 return 0; 4985 } 4986 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4987 return 0; 4988 } 4989 4990 /** 4991 * ipr_ata_slave_alloc - Prepare for commands to a SATA device 4992 * @sdev: scsi device struct 4993 * 4994 * This function initializes an ATA port so that future commands 4995 * sent through queuecommand will work. 4996 * 4997 * Return value: 4998 * 0 on success 4999 **/ 5000 static int ipr_ata_slave_alloc(struct scsi_device *sdev) 5001 { 5002 struct ipr_sata_port *sata_port = NULL; 5003 int rc = -ENXIO; 5004 5005 ENTER; 5006 if (sdev->sdev_target) 5007 sata_port = sdev->sdev_target->hostdata; 5008 if (sata_port) { 5009 rc = ata_sas_port_init(sata_port->ap); 5010 if (rc == 0) 5011 rc = ata_sas_sync_probe(sata_port->ap); 5012 } 5013 5014 if (rc) 5015 ipr_slave_destroy(sdev); 5016 5017 LEAVE; 5018 return rc; 5019 } 5020 5021 /** 5022 * ipr_slave_alloc - Prepare for commands to a device. 5023 * @sdev: scsi device struct 5024 * 5025 * This function saves a pointer to the resource entry 5026 * in the scsi device struct if the device exists. We 5027 * can then use this pointer in ipr_queuecommand when 5028 * handling new commands. 5029 * 5030 * Return value: 5031 * 0 on success / -ENXIO if device does not exist 5032 **/ 5033 static int ipr_slave_alloc(struct scsi_device *sdev) 5034 { 5035 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 5036 struct ipr_resource_entry *res; 5037 unsigned long lock_flags; 5038 int rc = -ENXIO; 5039 5040 sdev->hostdata = NULL; 5041 5042 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5043 5044 res = ipr_find_sdev(sdev); 5045 if (res) { 5046 res->sdev = sdev; 5047 res->add_to_ml = 0; 5048 res->in_erp = 0; 5049 sdev->hostdata = res; 5050 if (!ipr_is_naca_model(res)) 5051 res->needs_sync_complete = 1; 5052 rc = 0; 5053 if (ipr_is_gata(res)) { 5054 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5055 return ipr_ata_slave_alloc(sdev); 5056 } 5057 } 5058 5059 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5060 5061 return rc; 5062 } 5063 5064 /** 5065 * ipr_match_lun - Match function for specified LUN 5066 * @ipr_cmd: ipr command struct 5067 * @device: device to match (sdev) 5068 * 5069 * Returns: 5070 * 1 if command matches sdev / 0 if command does not match sdev 5071 **/ 5072 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device) 5073 { 5074 if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device) 5075 return 1; 5076 return 0; 5077 } 5078 5079 /** 5080 * ipr_cmnd_is_free - Check if a command is free or not 5081 * @ipr_cmd: ipr command struct 5082 * 5083 * Returns: 5084 * true / false 5085 **/ 5086 static bool ipr_cmnd_is_free(struct ipr_cmnd *ipr_cmd) 5087 { 5088 struct ipr_cmnd *loop_cmd; 5089 5090 list_for_each_entry(loop_cmd, &ipr_cmd->hrrq->hrrq_free_q, queue) { 5091 if (loop_cmd == ipr_cmd) 5092 return true; 5093 } 5094 5095 return false; 5096 } 5097 5098 /** 5099 * ipr_match_res - Match function for specified resource entry 5100 * @ipr_cmd: ipr command struct 5101 * @resource: resource entry to match 5102 * 5103 * Returns: 5104 * 1 if command matches sdev / 0 if command does not match sdev 5105 **/ 5106 static int ipr_match_res(struct ipr_cmnd *ipr_cmd, void *resource) 5107 { 5108 struct ipr_resource_entry *res = resource; 5109 5110 if (res && ipr_cmd->ioarcb.res_handle == res->res_handle) 5111 return 1; 5112 return 0; 5113 } 5114 5115 /** 5116 * ipr_wait_for_ops - Wait for matching commands to complete 5117 * @ioa_cfg: ioa config struct 5118 * @device: device to match (sdev) 5119 * @match: match function to use 5120 * 5121 * Returns: 5122 * SUCCESS / FAILED 5123 **/ 5124 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device, 5125 int (*match)(struct ipr_cmnd *, void *)) 5126 { 5127 struct ipr_cmnd *ipr_cmd; 5128 int wait, i; 5129 unsigned long flags; 5130 struct ipr_hrr_queue *hrrq; 5131 signed long timeout = IPR_ABORT_TASK_TIMEOUT; 5132 DECLARE_COMPLETION_ONSTACK(comp); 5133 5134 ENTER; 5135 do { 5136 wait = 0; 5137 5138 for_each_hrrq(hrrq, ioa_cfg) { 5139 spin_lock_irqsave(hrrq->lock, flags); 5140 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 5141 ipr_cmd = ioa_cfg->ipr_cmnd_list[i]; 5142 if (!ipr_cmnd_is_free(ipr_cmd)) { 5143 if (match(ipr_cmd, device)) { 5144 ipr_cmd->eh_comp = ∁ 5145 wait++; 5146 } 5147 } 5148 } 5149 spin_unlock_irqrestore(hrrq->lock, flags); 5150 } 5151 5152 if (wait) { 5153 timeout = wait_for_completion_timeout(&comp, timeout); 5154 5155 if (!timeout) { 5156 wait = 0; 5157 5158 for_each_hrrq(hrrq, ioa_cfg) { 5159 spin_lock_irqsave(hrrq->lock, flags); 5160 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 5161 ipr_cmd = ioa_cfg->ipr_cmnd_list[i]; 5162 if (!ipr_cmnd_is_free(ipr_cmd)) { 5163 if (match(ipr_cmd, device)) { 5164 ipr_cmd->eh_comp = NULL; 5165 wait++; 5166 } 5167 } 5168 } 5169 spin_unlock_irqrestore(hrrq->lock, flags); 5170 } 5171 5172 if (wait) 5173 dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n"); 5174 LEAVE; 5175 return wait ? FAILED : SUCCESS; 5176 } 5177 } 5178 } while (wait); 5179 5180 LEAVE; 5181 return SUCCESS; 5182 } 5183 5184 static int ipr_eh_host_reset(struct scsi_cmnd *cmd) 5185 { 5186 struct ipr_ioa_cfg *ioa_cfg; 5187 unsigned long lock_flags = 0; 5188 int rc = SUCCESS; 5189 5190 ENTER; 5191 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata; 5192 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5193 5194 if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) { 5195 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV); 5196 dev_err(&ioa_cfg->pdev->dev, 5197 "Adapter being reset as a result of error recovery.\n"); 5198 5199 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 5200 ioa_cfg->sdt_state = GET_DUMP; 5201 } 5202 5203 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5204 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5205 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5206 5207 /* If we got hit with a host reset while we were already resetting 5208 the adapter for some reason, and the reset failed. */ 5209 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) { 5210 ipr_trace; 5211 rc = FAILED; 5212 } 5213 5214 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5215 LEAVE; 5216 return rc; 5217 } 5218 5219 /** 5220 * ipr_device_reset - Reset the device 5221 * @ioa_cfg: ioa config struct 5222 * @res: resource entry struct 5223 * 5224 * This function issues a device reset to the affected device. 5225 * If the device is a SCSI device, a LUN reset will be sent 5226 * to the device first. If that does not work, a target reset 5227 * will be sent. If the device is a SATA device, a PHY reset will 5228 * be sent. 5229 * 5230 * Return value: 5231 * 0 on success / non-zero on failure 5232 **/ 5233 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, 5234 struct ipr_resource_entry *res) 5235 { 5236 struct ipr_cmnd *ipr_cmd; 5237 struct ipr_ioarcb *ioarcb; 5238 struct ipr_cmd_pkt *cmd_pkt; 5239 struct ipr_ioarcb_ata_regs *regs; 5240 u32 ioasc; 5241 5242 ENTER; 5243 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5244 ioarcb = &ipr_cmd->ioarcb; 5245 cmd_pkt = &ioarcb->cmd_pkt; 5246 5247 if (ipr_cmd->ioa_cfg->sis64) { 5248 regs = &ipr_cmd->i.ata_ioadl.regs; 5249 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb)); 5250 } else 5251 regs = &ioarcb->u.add_data.u.regs; 5252 5253 ioarcb->res_handle = res->res_handle; 5254 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5255 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 5256 if (ipr_is_gata(res)) { 5257 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET; 5258 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags)); 5259 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 5260 } 5261 5262 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 5263 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5264 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 5265 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) { 5266 if (ipr_cmd->ioa_cfg->sis64) 5267 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata, 5268 sizeof(struct ipr_ioasa_gata)); 5269 else 5270 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata, 5271 sizeof(struct ipr_ioasa_gata)); 5272 } 5273 5274 LEAVE; 5275 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0; 5276 } 5277 5278 /** 5279 * ipr_sata_reset - Reset the SATA port 5280 * @link: SATA link to reset 5281 * @classes: class of the attached device 5282 * @deadline: unused 5283 * 5284 * This function issues a SATA phy reset to the affected ATA link. 5285 * 5286 * Return value: 5287 * 0 on success / non-zero on failure 5288 **/ 5289 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes, 5290 unsigned long deadline) 5291 { 5292 struct ipr_sata_port *sata_port = link->ap->private_data; 5293 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5294 struct ipr_resource_entry *res; 5295 unsigned long lock_flags = 0; 5296 int rc = -ENXIO, ret; 5297 5298 ENTER; 5299 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5300 while (ioa_cfg->in_reset_reload) { 5301 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5302 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5303 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5304 } 5305 5306 res = sata_port->res; 5307 if (res) { 5308 rc = ipr_device_reset(ioa_cfg, res); 5309 *classes = res->ata_class; 5310 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5311 5312 ret = ipr_wait_for_ops(ioa_cfg, res, ipr_match_res); 5313 if (ret != SUCCESS) { 5314 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5315 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV); 5316 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5317 5318 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5319 } 5320 } else 5321 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5322 5323 LEAVE; 5324 return rc; 5325 } 5326 5327 /** 5328 * __ipr_eh_dev_reset - Reset the device 5329 * @scsi_cmd: scsi command struct 5330 * 5331 * This function issues a device reset to the affected device. 5332 * A LUN reset will be sent to the device first. If that does 5333 * not work, a target reset will be sent. 5334 * 5335 * Return value: 5336 * SUCCESS / FAILED 5337 **/ 5338 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd) 5339 { 5340 struct ipr_cmnd *ipr_cmd; 5341 struct ipr_ioa_cfg *ioa_cfg; 5342 struct ipr_resource_entry *res; 5343 struct ata_port *ap; 5344 int rc = 0, i; 5345 struct ipr_hrr_queue *hrrq; 5346 5347 ENTER; 5348 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 5349 res = scsi_cmd->device->hostdata; 5350 5351 /* 5352 * If we are currently going through reset/reload, return failed. This will force the 5353 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 5354 * reset to complete 5355 */ 5356 if (ioa_cfg->in_reset_reload) 5357 return FAILED; 5358 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 5359 return FAILED; 5360 5361 for_each_hrrq(hrrq, ioa_cfg) { 5362 spin_lock(&hrrq->_lock); 5363 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 5364 ipr_cmd = ioa_cfg->ipr_cmnd_list[i]; 5365 5366 if (ipr_cmd->ioarcb.res_handle == res->res_handle) { 5367 if (!ipr_cmd->qc) 5368 continue; 5369 if (ipr_cmnd_is_free(ipr_cmd)) 5370 continue; 5371 5372 ipr_cmd->done = ipr_sata_eh_done; 5373 if (!(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) { 5374 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT; 5375 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED; 5376 } 5377 } 5378 } 5379 spin_unlock(&hrrq->_lock); 5380 } 5381 res->resetting_device = 1; 5382 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); 5383 5384 if (ipr_is_gata(res) && res->sata_port) { 5385 ap = res->sata_port->ap; 5386 spin_unlock_irq(scsi_cmd->device->host->host_lock); 5387 ata_std_error_handler(ap); 5388 spin_lock_irq(scsi_cmd->device->host->host_lock); 5389 } else 5390 rc = ipr_device_reset(ioa_cfg, res); 5391 res->resetting_device = 0; 5392 res->reset_occurred = 1; 5393 5394 LEAVE; 5395 return rc ? FAILED : SUCCESS; 5396 } 5397 5398 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd) 5399 { 5400 int rc; 5401 struct ipr_ioa_cfg *ioa_cfg; 5402 struct ipr_resource_entry *res; 5403 5404 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata; 5405 res = cmd->device->hostdata; 5406 5407 if (!res) 5408 return FAILED; 5409 5410 spin_lock_irq(cmd->device->host->host_lock); 5411 rc = __ipr_eh_dev_reset(cmd); 5412 spin_unlock_irq(cmd->device->host->host_lock); 5413 5414 if (rc == SUCCESS) { 5415 if (ipr_is_gata(res) && res->sata_port) 5416 rc = ipr_wait_for_ops(ioa_cfg, res, ipr_match_res); 5417 else 5418 rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun); 5419 } 5420 5421 return rc; 5422 } 5423 5424 /** 5425 * ipr_bus_reset_done - Op done function for bus reset. 5426 * @ipr_cmd: ipr command struct 5427 * 5428 * This function is the op done function for a bus reset 5429 * 5430 * Return value: 5431 * none 5432 **/ 5433 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 5434 { 5435 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5436 struct ipr_resource_entry *res; 5437 5438 ENTER; 5439 if (!ioa_cfg->sis64) 5440 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 5441 if (res->res_handle == ipr_cmd->ioarcb.res_handle) { 5442 scsi_report_bus_reset(ioa_cfg->host, res->bus); 5443 break; 5444 } 5445 } 5446 5447 /* 5448 * If abort has not completed, indicate the reset has, else call the 5449 * abort's done function to wake the sleeping eh thread 5450 */ 5451 if (ipr_cmd->sibling->sibling) 5452 ipr_cmd->sibling->sibling = NULL; 5453 else 5454 ipr_cmd->sibling->done(ipr_cmd->sibling); 5455 5456 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 5457 LEAVE; 5458 } 5459 5460 /** 5461 * ipr_abort_timeout - An abort task has timed out 5462 * @t: Timer context used to fetch ipr command struct 5463 * 5464 * This function handles when an abort task times out. If this 5465 * happens we issue a bus reset since we have resources tied 5466 * up that must be freed before returning to the midlayer. 5467 * 5468 * Return value: 5469 * none 5470 **/ 5471 static void ipr_abort_timeout(struct timer_list *t) 5472 { 5473 struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer); 5474 struct ipr_cmnd *reset_cmd; 5475 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5476 struct ipr_cmd_pkt *cmd_pkt; 5477 unsigned long lock_flags = 0; 5478 5479 ENTER; 5480 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5481 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 5482 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5483 return; 5484 } 5485 5486 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n"); 5487 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5488 ipr_cmd->sibling = reset_cmd; 5489 reset_cmd->sibling = ipr_cmd; 5490 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 5491 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 5492 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5493 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 5494 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 5495 5496 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 5497 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5498 LEAVE; 5499 } 5500 5501 /** 5502 * ipr_cancel_op - Cancel specified op 5503 * @scsi_cmd: scsi command struct 5504 * 5505 * This function cancels specified op. 5506 * 5507 * Return value: 5508 * SUCCESS / FAILED 5509 **/ 5510 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd) 5511 { 5512 struct ipr_cmnd *ipr_cmd; 5513 struct ipr_ioa_cfg *ioa_cfg; 5514 struct ipr_resource_entry *res; 5515 struct ipr_cmd_pkt *cmd_pkt; 5516 u32 ioasc; 5517 int i, op_found = 0; 5518 struct ipr_hrr_queue *hrrq; 5519 5520 ENTER; 5521 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 5522 res = scsi_cmd->device->hostdata; 5523 5524 /* If we are currently going through reset/reload, return failed. 5525 * This will force the mid-layer to call ipr_eh_host_reset, 5526 * which will then go to sleep and wait for the reset to complete 5527 */ 5528 if (ioa_cfg->in_reset_reload || 5529 ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 5530 return FAILED; 5531 if (!res) 5532 return FAILED; 5533 5534 /* 5535 * If we are aborting a timed out op, chances are that the timeout was caused 5536 * by a still not detected EEH error. In such cases, reading a register will 5537 * trigger the EEH recovery infrastructure. 5538 */ 5539 readl(ioa_cfg->regs.sense_interrupt_reg); 5540 5541 if (!ipr_is_gscsi(res)) 5542 return FAILED; 5543 5544 for_each_hrrq(hrrq, ioa_cfg) { 5545 spin_lock(&hrrq->_lock); 5546 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 5547 if (ioa_cfg->ipr_cmnd_list[i]->scsi_cmd == scsi_cmd) { 5548 if (!ipr_cmnd_is_free(ioa_cfg->ipr_cmnd_list[i])) { 5549 op_found = 1; 5550 break; 5551 } 5552 } 5553 } 5554 spin_unlock(&hrrq->_lock); 5555 } 5556 5557 if (!op_found) 5558 return SUCCESS; 5559 5560 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5561 ipr_cmd->ioarcb.res_handle = res->res_handle; 5562 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 5563 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5564 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 5565 ipr_cmd->u.sdev = scsi_cmd->device; 5566 5567 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n", 5568 scsi_cmd->cmnd[0]); 5569 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 5570 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5571 5572 /* 5573 * If the abort task timed out and we sent a bus reset, we will get 5574 * one the following responses to the abort 5575 */ 5576 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 5577 ioasc = 0; 5578 ipr_trace; 5579 } 5580 5581 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 5582 if (!ipr_is_naca_model(res)) 5583 res->needs_sync_complete = 1; 5584 5585 LEAVE; 5586 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS; 5587 } 5588 5589 /** 5590 * ipr_scan_finished - Report whether scan is done 5591 * @shost: scsi host struct 5592 * @elapsed_time: elapsed time 5593 * 5594 * Return value: 5595 * 0 if scan in progress / 1 if scan is complete 5596 **/ 5597 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time) 5598 { 5599 unsigned long lock_flags; 5600 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 5601 int rc = 0; 5602 5603 spin_lock_irqsave(shost->host_lock, lock_flags); 5604 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done) 5605 rc = 1; 5606 if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2)) 5607 rc = 1; 5608 spin_unlock_irqrestore(shost->host_lock, lock_flags); 5609 return rc; 5610 } 5611 5612 /** 5613 * ipr_eh_abort - Reset the host adapter 5614 * @scsi_cmd: scsi command struct 5615 * 5616 * Return value: 5617 * SUCCESS / FAILED 5618 **/ 5619 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd) 5620 { 5621 unsigned long flags; 5622 int rc; 5623 struct ipr_ioa_cfg *ioa_cfg; 5624 5625 ENTER; 5626 5627 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 5628 5629 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 5630 rc = ipr_cancel_op(scsi_cmd); 5631 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 5632 5633 if (rc == SUCCESS) 5634 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun); 5635 LEAVE; 5636 return rc; 5637 } 5638 5639 /** 5640 * ipr_handle_other_interrupt - Handle "other" interrupts 5641 * @ioa_cfg: ioa config struct 5642 * @int_reg: interrupt register 5643 * 5644 * Return value: 5645 * IRQ_NONE / IRQ_HANDLED 5646 **/ 5647 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 5648 u32 int_reg) 5649 { 5650 irqreturn_t rc = IRQ_HANDLED; 5651 u32 int_mask_reg; 5652 5653 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 5654 int_reg &= ~int_mask_reg; 5655 5656 /* If an interrupt on the adapter did not occur, ignore it. 5657 * Or in the case of SIS 64, check for a stage change interrupt. 5658 */ 5659 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) { 5660 if (ioa_cfg->sis64) { 5661 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 5662 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 5663 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) { 5664 5665 /* clear stage change */ 5666 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg); 5667 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 5668 list_del(&ioa_cfg->reset_cmd->queue); 5669 del_timer(&ioa_cfg->reset_cmd->timer); 5670 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 5671 return IRQ_HANDLED; 5672 } 5673 } 5674 5675 return IRQ_NONE; 5676 } 5677 5678 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 5679 /* Mask the interrupt */ 5680 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 5681 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 5682 5683 list_del(&ioa_cfg->reset_cmd->queue); 5684 del_timer(&ioa_cfg->reset_cmd->timer); 5685 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 5686 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) { 5687 if (ioa_cfg->clear_isr) { 5688 if (ipr_debug && printk_ratelimit()) 5689 dev_err(&ioa_cfg->pdev->dev, 5690 "Spurious interrupt detected. 0x%08X\n", int_reg); 5691 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32); 5692 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5693 return IRQ_NONE; 5694 } 5695 } else { 5696 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 5697 ioa_cfg->ioa_unit_checked = 1; 5698 else if (int_reg & IPR_PCII_NO_HOST_RRQ) 5699 dev_err(&ioa_cfg->pdev->dev, 5700 "No Host RRQ. 0x%08X\n", int_reg); 5701 else 5702 dev_err(&ioa_cfg->pdev->dev, 5703 "Permanent IOA failure. 0x%08X\n", int_reg); 5704 5705 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 5706 ioa_cfg->sdt_state = GET_DUMP; 5707 5708 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 5709 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5710 } 5711 5712 return rc; 5713 } 5714 5715 /** 5716 * ipr_isr_eh - Interrupt service routine error handler 5717 * @ioa_cfg: ioa config struct 5718 * @msg: message to log 5719 * @number: various meanings depending on the caller/message 5720 * 5721 * Return value: 5722 * none 5723 **/ 5724 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number) 5725 { 5726 ioa_cfg->errors_logged++; 5727 dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number); 5728 5729 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 5730 ioa_cfg->sdt_state = GET_DUMP; 5731 5732 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5733 } 5734 5735 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget, 5736 struct list_head *doneq) 5737 { 5738 u32 ioasc; 5739 u16 cmd_index; 5740 struct ipr_cmnd *ipr_cmd; 5741 struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg; 5742 int num_hrrq = 0; 5743 5744 /* If interrupts are disabled, ignore the interrupt */ 5745 if (!hrr_queue->allow_interrupts) 5746 return 0; 5747 5748 while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5749 hrr_queue->toggle_bit) { 5750 5751 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) & 5752 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> 5753 IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 5754 5755 if (unlikely(cmd_index > hrr_queue->max_cmd_id || 5756 cmd_index < hrr_queue->min_cmd_id)) { 5757 ipr_isr_eh(ioa_cfg, 5758 "Invalid response handle from IOA: ", 5759 cmd_index); 5760 break; 5761 } 5762 5763 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 5764 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5765 5766 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 5767 5768 list_move_tail(&ipr_cmd->queue, doneq); 5769 5770 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) { 5771 hrr_queue->hrrq_curr++; 5772 } else { 5773 hrr_queue->hrrq_curr = hrr_queue->hrrq_start; 5774 hrr_queue->toggle_bit ^= 1u; 5775 } 5776 num_hrrq++; 5777 if (budget > 0 && num_hrrq >= budget) 5778 break; 5779 } 5780 5781 return num_hrrq; 5782 } 5783 5784 static int ipr_iopoll(struct irq_poll *iop, int budget) 5785 { 5786 struct ipr_hrr_queue *hrrq; 5787 struct ipr_cmnd *ipr_cmd, *temp; 5788 unsigned long hrrq_flags; 5789 int completed_ops; 5790 LIST_HEAD(doneq); 5791 5792 hrrq = container_of(iop, struct ipr_hrr_queue, iopoll); 5793 5794 spin_lock_irqsave(hrrq->lock, hrrq_flags); 5795 completed_ops = ipr_process_hrrq(hrrq, budget, &doneq); 5796 5797 if (completed_ops < budget) 5798 irq_poll_complete(iop); 5799 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5800 5801 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) { 5802 list_del(&ipr_cmd->queue); 5803 del_timer(&ipr_cmd->timer); 5804 ipr_cmd->fast_done(ipr_cmd); 5805 } 5806 5807 return completed_ops; 5808 } 5809 5810 /** 5811 * ipr_isr - Interrupt service routine 5812 * @irq: irq number 5813 * @devp: pointer to ioa config struct 5814 * 5815 * Return value: 5816 * IRQ_NONE / IRQ_HANDLED 5817 **/ 5818 static irqreturn_t ipr_isr(int irq, void *devp) 5819 { 5820 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp; 5821 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg; 5822 unsigned long hrrq_flags = 0; 5823 u32 int_reg = 0; 5824 int num_hrrq = 0; 5825 int irq_none = 0; 5826 struct ipr_cmnd *ipr_cmd, *temp; 5827 irqreturn_t rc = IRQ_NONE; 5828 LIST_HEAD(doneq); 5829 5830 spin_lock_irqsave(hrrq->lock, hrrq_flags); 5831 /* If interrupts are disabled, ignore the interrupt */ 5832 if (!hrrq->allow_interrupts) { 5833 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5834 return IRQ_NONE; 5835 } 5836 5837 while (1) { 5838 if (ipr_process_hrrq(hrrq, -1, &doneq)) { 5839 rc = IRQ_HANDLED; 5840 5841 if (!ioa_cfg->clear_isr) 5842 break; 5843 5844 /* Clear the PCI interrupt */ 5845 num_hrrq = 0; 5846 do { 5847 writel(IPR_PCII_HRRQ_UPDATED, 5848 ioa_cfg->regs.clr_interrupt_reg32); 5849 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5850 } while (int_reg & IPR_PCII_HRRQ_UPDATED && 5851 num_hrrq++ < IPR_MAX_HRRQ_RETRIES); 5852 5853 } else if (rc == IRQ_NONE && irq_none == 0) { 5854 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5855 irq_none++; 5856 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES && 5857 int_reg & IPR_PCII_HRRQ_UPDATED) { 5858 ipr_isr_eh(ioa_cfg, 5859 "Error clearing HRRQ: ", num_hrrq); 5860 rc = IRQ_HANDLED; 5861 break; 5862 } else 5863 break; 5864 } 5865 5866 if (unlikely(rc == IRQ_NONE)) 5867 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 5868 5869 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5870 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) { 5871 list_del(&ipr_cmd->queue); 5872 del_timer(&ipr_cmd->timer); 5873 ipr_cmd->fast_done(ipr_cmd); 5874 } 5875 return rc; 5876 } 5877 5878 /** 5879 * ipr_isr_mhrrq - Interrupt service routine 5880 * @irq: irq number 5881 * @devp: pointer to ioa config struct 5882 * 5883 * Return value: 5884 * IRQ_NONE / IRQ_HANDLED 5885 **/ 5886 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp) 5887 { 5888 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp; 5889 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg; 5890 unsigned long hrrq_flags = 0; 5891 struct ipr_cmnd *ipr_cmd, *temp; 5892 irqreturn_t rc = IRQ_NONE; 5893 LIST_HEAD(doneq); 5894 5895 spin_lock_irqsave(hrrq->lock, hrrq_flags); 5896 5897 /* If interrupts are disabled, ignore the interrupt */ 5898 if (!hrrq->allow_interrupts) { 5899 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5900 return IRQ_NONE; 5901 } 5902 5903 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 5904 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5905 hrrq->toggle_bit) { 5906 irq_poll_sched(&hrrq->iopoll); 5907 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5908 return IRQ_HANDLED; 5909 } 5910 } else { 5911 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5912 hrrq->toggle_bit) 5913 5914 if (ipr_process_hrrq(hrrq, -1, &doneq)) 5915 rc = IRQ_HANDLED; 5916 } 5917 5918 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5919 5920 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) { 5921 list_del(&ipr_cmd->queue); 5922 del_timer(&ipr_cmd->timer); 5923 ipr_cmd->fast_done(ipr_cmd); 5924 } 5925 return rc; 5926 } 5927 5928 /** 5929 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer 5930 * @ioa_cfg: ioa config struct 5931 * @ipr_cmd: ipr command struct 5932 * 5933 * Return value: 5934 * 0 on success / -1 on failure 5935 **/ 5936 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg, 5937 struct ipr_cmnd *ipr_cmd) 5938 { 5939 int i, nseg; 5940 struct scatterlist *sg; 5941 u32 length; 5942 u32 ioadl_flags = 0; 5943 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5944 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5945 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 5946 5947 length = scsi_bufflen(scsi_cmd); 5948 if (!length) 5949 return 0; 5950 5951 nseg = scsi_dma_map(scsi_cmd); 5952 if (nseg < 0) { 5953 if (printk_ratelimit()) 5954 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n"); 5955 return -1; 5956 } 5957 5958 ipr_cmd->dma_use_sg = nseg; 5959 5960 ioarcb->data_transfer_length = cpu_to_be32(length); 5961 ioarcb->ioadl_len = 5962 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 5963 5964 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 5965 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5966 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5967 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) 5968 ioadl_flags = IPR_IOADL_FLAGS_READ; 5969 5970 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 5971 ioadl64[i].flags = cpu_to_be32(ioadl_flags); 5972 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg)); 5973 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg)); 5974 } 5975 5976 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5977 return 0; 5978 } 5979 5980 /** 5981 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 5982 * @ioa_cfg: ioa config struct 5983 * @ipr_cmd: ipr command struct 5984 * 5985 * Return value: 5986 * 0 on success / -1 on failure 5987 **/ 5988 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 5989 struct ipr_cmnd *ipr_cmd) 5990 { 5991 int i, nseg; 5992 struct scatterlist *sg; 5993 u32 length; 5994 u32 ioadl_flags = 0; 5995 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5996 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5997 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 5998 5999 length = scsi_bufflen(scsi_cmd); 6000 if (!length) 6001 return 0; 6002 6003 nseg = scsi_dma_map(scsi_cmd); 6004 if (nseg < 0) { 6005 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n"); 6006 return -1; 6007 } 6008 6009 ipr_cmd->dma_use_sg = nseg; 6010 6011 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 6012 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 6013 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6014 ioarcb->data_transfer_length = cpu_to_be32(length); 6015 ioarcb->ioadl_len = 6016 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 6017 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 6018 ioadl_flags = IPR_IOADL_FLAGS_READ; 6019 ioarcb->read_data_transfer_length = cpu_to_be32(length); 6020 ioarcb->read_ioadl_len = 6021 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 6022 } 6023 6024 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) { 6025 ioadl = ioarcb->u.add_data.u.ioadl; 6026 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) + 6027 offsetof(struct ipr_ioarcb, u.add_data)); 6028 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 6029 } 6030 6031 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 6032 ioadl[i].flags_and_data_len = 6033 cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 6034 ioadl[i].address = cpu_to_be32(sg_dma_address(sg)); 6035 } 6036 6037 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 6038 return 0; 6039 } 6040 6041 /** 6042 * __ipr_erp_done - Process completion of ERP for a device 6043 * @ipr_cmd: ipr command struct 6044 * 6045 * This function copies the sense buffer into the scsi_cmd 6046 * struct and pushes the scsi_done function. 6047 * 6048 * Return value: 6049 * nothing 6050 **/ 6051 static void __ipr_erp_done(struct ipr_cmnd *ipr_cmd) 6052 { 6053 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6054 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 6055 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6056 6057 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 6058 scsi_cmd->result |= (DID_ERROR << 16); 6059 scmd_printk(KERN_ERR, scsi_cmd, 6060 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 6061 } else { 6062 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 6063 SCSI_SENSE_BUFFERSIZE); 6064 } 6065 6066 if (res) { 6067 if (!ipr_is_naca_model(res)) 6068 res->needs_sync_complete = 1; 6069 res->in_erp = 0; 6070 } 6071 scsi_dma_unmap(ipr_cmd->scsi_cmd); 6072 scsi_done(scsi_cmd); 6073 if (ipr_cmd->eh_comp) 6074 complete(ipr_cmd->eh_comp); 6075 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6076 } 6077 6078 /** 6079 * ipr_erp_done - Process completion of ERP for a device 6080 * @ipr_cmd: ipr command struct 6081 * 6082 * This function copies the sense buffer into the scsi_cmd 6083 * struct and pushes the scsi_done function. 6084 * 6085 * Return value: 6086 * nothing 6087 **/ 6088 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 6089 { 6090 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq; 6091 unsigned long hrrq_flags; 6092 6093 spin_lock_irqsave(&hrrq->_lock, hrrq_flags); 6094 __ipr_erp_done(ipr_cmd); 6095 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags); 6096 } 6097 6098 /** 6099 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 6100 * @ipr_cmd: ipr command struct 6101 * 6102 * Return value: 6103 * none 6104 **/ 6105 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 6106 { 6107 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6108 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 6109 dma_addr_t dma_addr = ipr_cmd->dma_addr; 6110 6111 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 6112 ioarcb->data_transfer_length = 0; 6113 ioarcb->read_data_transfer_length = 0; 6114 ioarcb->ioadl_len = 0; 6115 ioarcb->read_ioadl_len = 0; 6116 ioasa->hdr.ioasc = 0; 6117 ioasa->hdr.residual_data_len = 0; 6118 6119 if (ipr_cmd->ioa_cfg->sis64) 6120 ioarcb->u.sis64_addr_data.data_ioadl_addr = 6121 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 6122 else { 6123 ioarcb->write_ioadl_addr = 6124 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 6125 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 6126 } 6127 } 6128 6129 /** 6130 * __ipr_erp_request_sense - Send request sense to a device 6131 * @ipr_cmd: ipr command struct 6132 * 6133 * This function sends a request sense to a device as a result 6134 * of a check condition. 6135 * 6136 * Return value: 6137 * nothing 6138 **/ 6139 static void __ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 6140 { 6141 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 6142 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6143 6144 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 6145 __ipr_erp_done(ipr_cmd); 6146 return; 6147 } 6148 6149 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 6150 6151 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 6152 cmd_pkt->cdb[0] = REQUEST_SENSE; 6153 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 6154 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 6155 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6156 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 6157 6158 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma, 6159 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST); 6160 6161 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 6162 IPR_REQUEST_SENSE_TIMEOUT * 2); 6163 } 6164 6165 /** 6166 * ipr_erp_request_sense - Send request sense to a device 6167 * @ipr_cmd: ipr command struct 6168 * 6169 * This function sends a request sense to a device as a result 6170 * of a check condition. 6171 * 6172 * Return value: 6173 * nothing 6174 **/ 6175 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 6176 { 6177 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq; 6178 unsigned long hrrq_flags; 6179 6180 spin_lock_irqsave(&hrrq->_lock, hrrq_flags); 6181 __ipr_erp_request_sense(ipr_cmd); 6182 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags); 6183 } 6184 6185 /** 6186 * ipr_erp_cancel_all - Send cancel all to a device 6187 * @ipr_cmd: ipr command struct 6188 * 6189 * This function sends a cancel all to a device to clear the 6190 * queue. If we are running TCQ on the device, QERR is set to 1, 6191 * which means all outstanding ops have been dropped on the floor. 6192 * Cancel all will return them to us. 6193 * 6194 * Return value: 6195 * nothing 6196 **/ 6197 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 6198 { 6199 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6200 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 6201 struct ipr_cmd_pkt *cmd_pkt; 6202 6203 res->in_erp = 1; 6204 6205 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 6206 6207 if (!scsi_cmd->device->simple_tags) { 6208 __ipr_erp_request_sense(ipr_cmd); 6209 return; 6210 } 6211 6212 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 6213 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 6214 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 6215 6216 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 6217 IPR_CANCEL_ALL_TIMEOUT); 6218 } 6219 6220 /** 6221 * ipr_dump_ioasa - Dump contents of IOASA 6222 * @ioa_cfg: ioa config struct 6223 * @ipr_cmd: ipr command struct 6224 * @res: resource entry struct 6225 * 6226 * This function is invoked by the interrupt handler when ops 6227 * fail. It will log the IOASA if appropriate. Only called 6228 * for GPDD ops. 6229 * 6230 * Return value: 6231 * none 6232 **/ 6233 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 6234 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res) 6235 { 6236 int i; 6237 u16 data_len; 6238 u32 ioasc, fd_ioasc; 6239 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 6240 __be32 *ioasa_data = (__be32 *)ioasa; 6241 int error_index; 6242 6243 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK; 6244 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK; 6245 6246 if (0 == ioasc) 6247 return; 6248 6249 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 6250 return; 6251 6252 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc) 6253 error_index = ipr_get_error(fd_ioasc); 6254 else 6255 error_index = ipr_get_error(ioasc); 6256 6257 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 6258 /* Don't log an error if the IOA already logged one */ 6259 if (ioasa->hdr.ilid != 0) 6260 return; 6261 6262 if (!ipr_is_gscsi(res)) 6263 return; 6264 6265 if (ipr_error_table[error_index].log_ioasa == 0) 6266 return; 6267 } 6268 6269 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error); 6270 6271 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len); 6272 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len) 6273 data_len = sizeof(struct ipr_ioasa64); 6274 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len) 6275 data_len = sizeof(struct ipr_ioasa); 6276 6277 ipr_err("IOASA Dump:\n"); 6278 6279 for (i = 0; i < data_len / 4; i += 4) { 6280 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 6281 be32_to_cpu(ioasa_data[i]), 6282 be32_to_cpu(ioasa_data[i+1]), 6283 be32_to_cpu(ioasa_data[i+2]), 6284 be32_to_cpu(ioasa_data[i+3])); 6285 } 6286 } 6287 6288 /** 6289 * ipr_gen_sense - Generate SCSI sense data from an IOASA 6290 * @ipr_cmd: ipr command struct 6291 * 6292 * Return value: 6293 * none 6294 **/ 6295 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 6296 { 6297 u32 failing_lba; 6298 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 6299 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 6300 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 6301 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc); 6302 6303 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 6304 6305 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 6306 return; 6307 6308 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 6309 6310 if (ipr_is_vset_device(res) && 6311 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 6312 ioasa->u.vset.failing_lba_hi != 0) { 6313 sense_buf[0] = 0x72; 6314 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 6315 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 6316 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 6317 6318 sense_buf[7] = 12; 6319 sense_buf[8] = 0; 6320 sense_buf[9] = 0x0A; 6321 sense_buf[10] = 0x80; 6322 6323 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 6324 6325 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 6326 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 6327 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 6328 sense_buf[15] = failing_lba & 0x000000ff; 6329 6330 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 6331 6332 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 6333 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 6334 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 6335 sense_buf[19] = failing_lba & 0x000000ff; 6336 } else { 6337 sense_buf[0] = 0x70; 6338 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 6339 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 6340 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 6341 6342 /* Illegal request */ 6343 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 6344 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 6345 sense_buf[7] = 10; /* additional length */ 6346 6347 /* IOARCB was in error */ 6348 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 6349 sense_buf[15] = 0xC0; 6350 else /* Parameter data was invalid */ 6351 sense_buf[15] = 0x80; 6352 6353 sense_buf[16] = 6354 ((IPR_FIELD_POINTER_MASK & 6355 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff; 6356 sense_buf[17] = 6357 (IPR_FIELD_POINTER_MASK & 6358 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff; 6359 } else { 6360 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 6361 if (ipr_is_vset_device(res)) 6362 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 6363 else 6364 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 6365 6366 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 6367 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 6368 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 6369 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 6370 sense_buf[6] = failing_lba & 0x000000ff; 6371 } 6372 6373 sense_buf[7] = 6; /* additional length */ 6374 } 6375 } 6376 } 6377 6378 /** 6379 * ipr_get_autosense - Copy autosense data to sense buffer 6380 * @ipr_cmd: ipr command struct 6381 * 6382 * This function copies the autosense buffer to the buffer 6383 * in the scsi_cmd, if there is autosense available. 6384 * 6385 * Return value: 6386 * 1 if autosense was available / 0 if not 6387 **/ 6388 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) 6389 { 6390 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 6391 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64; 6392 6393 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0) 6394 return 0; 6395 6396 if (ipr_cmd->ioa_cfg->sis64) 6397 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data, 6398 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len), 6399 SCSI_SENSE_BUFFERSIZE)); 6400 else 6401 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, 6402 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), 6403 SCSI_SENSE_BUFFERSIZE)); 6404 return 1; 6405 } 6406 6407 /** 6408 * ipr_erp_start - Process an error response for a SCSI op 6409 * @ioa_cfg: ioa config struct 6410 * @ipr_cmd: ipr command struct 6411 * 6412 * This function determines whether or not to initiate ERP 6413 * on the affected device. 6414 * 6415 * Return value: 6416 * nothing 6417 **/ 6418 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 6419 struct ipr_cmnd *ipr_cmd) 6420 { 6421 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6422 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 6423 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6424 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK; 6425 6426 if (!res) { 6427 __ipr_scsi_eh_done(ipr_cmd); 6428 return; 6429 } 6430 6431 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS) 6432 ipr_gen_sense(ipr_cmd); 6433 6434 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 6435 6436 switch (masked_ioasc) { 6437 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 6438 if (ipr_is_naca_model(res)) 6439 scsi_cmd->result |= (DID_ABORT << 16); 6440 else 6441 scsi_cmd->result |= (DID_IMM_RETRY << 16); 6442 break; 6443 case IPR_IOASC_IR_RESOURCE_HANDLE: 6444 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: 6445 scsi_cmd->result |= (DID_NO_CONNECT << 16); 6446 break; 6447 case IPR_IOASC_HW_SEL_TIMEOUT: 6448 scsi_cmd->result |= (DID_NO_CONNECT << 16); 6449 if (!ipr_is_naca_model(res)) 6450 res->needs_sync_complete = 1; 6451 break; 6452 case IPR_IOASC_SYNC_REQUIRED: 6453 if (!res->in_erp) 6454 res->needs_sync_complete = 1; 6455 scsi_cmd->result |= (DID_IMM_RETRY << 16); 6456 break; 6457 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 6458 case IPR_IOASA_IR_DUAL_IOA_DISABLED: 6459 /* 6460 * exception: do not set DID_PASSTHROUGH on CHECK CONDITION 6461 * so SCSI mid-layer and upper layers handle it accordingly. 6462 */ 6463 if (scsi_cmd->result != SAM_STAT_CHECK_CONDITION) 6464 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 6465 break; 6466 case IPR_IOASC_BUS_WAS_RESET: 6467 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 6468 /* 6469 * Report the bus reset and ask for a retry. The device 6470 * will give CC/UA the next command. 6471 */ 6472 if (!res->resetting_device) 6473 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 6474 scsi_cmd->result |= (DID_ERROR << 16); 6475 if (!ipr_is_naca_model(res)) 6476 res->needs_sync_complete = 1; 6477 break; 6478 case IPR_IOASC_HW_DEV_BUS_STATUS: 6479 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 6480 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 6481 if (!ipr_get_autosense(ipr_cmd)) { 6482 if (!ipr_is_naca_model(res)) { 6483 ipr_erp_cancel_all(ipr_cmd); 6484 return; 6485 } 6486 } 6487 } 6488 if (!ipr_is_naca_model(res)) 6489 res->needs_sync_complete = 1; 6490 break; 6491 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 6492 break; 6493 case IPR_IOASC_IR_NON_OPTIMIZED: 6494 if (res->raw_mode) { 6495 res->raw_mode = 0; 6496 scsi_cmd->result |= (DID_IMM_RETRY << 16); 6497 } else 6498 scsi_cmd->result |= (DID_ERROR << 16); 6499 break; 6500 default: 6501 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 6502 scsi_cmd->result |= (DID_ERROR << 16); 6503 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) 6504 res->needs_sync_complete = 1; 6505 break; 6506 } 6507 6508 scsi_dma_unmap(ipr_cmd->scsi_cmd); 6509 scsi_done(scsi_cmd); 6510 if (ipr_cmd->eh_comp) 6511 complete(ipr_cmd->eh_comp); 6512 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6513 } 6514 6515 /** 6516 * ipr_scsi_done - mid-layer done function 6517 * @ipr_cmd: ipr command struct 6518 * 6519 * This function is invoked by the interrupt handler for 6520 * ops generated by the SCSI mid-layer 6521 * 6522 * Return value: 6523 * none 6524 **/ 6525 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 6526 { 6527 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6528 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6529 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6530 unsigned long lock_flags; 6531 6532 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len)); 6533 6534 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 6535 scsi_dma_unmap(scsi_cmd); 6536 6537 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags); 6538 scsi_done(scsi_cmd); 6539 if (ipr_cmd->eh_comp) 6540 complete(ipr_cmd->eh_comp); 6541 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6542 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags); 6543 } else { 6544 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6545 spin_lock(&ipr_cmd->hrrq->_lock); 6546 ipr_erp_start(ioa_cfg, ipr_cmd); 6547 spin_unlock(&ipr_cmd->hrrq->_lock); 6548 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6549 } 6550 } 6551 6552 /** 6553 * ipr_queuecommand - Queue a mid-layer request 6554 * @shost: scsi host struct 6555 * @scsi_cmd: scsi command struct 6556 * 6557 * This function queues a request generated by the mid-layer. 6558 * 6559 * Return value: 6560 * 0 on success 6561 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 6562 * SCSI_MLQUEUE_HOST_BUSY if host is busy 6563 **/ 6564 static int ipr_queuecommand(struct Scsi_Host *shost, 6565 struct scsi_cmnd *scsi_cmd) 6566 { 6567 struct ipr_ioa_cfg *ioa_cfg; 6568 struct ipr_resource_entry *res; 6569 struct ipr_ioarcb *ioarcb; 6570 struct ipr_cmnd *ipr_cmd; 6571 unsigned long hrrq_flags, lock_flags; 6572 int rc; 6573 struct ipr_hrr_queue *hrrq; 6574 int hrrq_id; 6575 6576 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 6577 6578 scsi_cmd->result = (DID_OK << 16); 6579 res = scsi_cmd->device->hostdata; 6580 6581 if (ipr_is_gata(res) && res->sata_port) { 6582 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6583 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap); 6584 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6585 return rc; 6586 } 6587 6588 hrrq_id = ipr_get_hrrq_index(ioa_cfg); 6589 hrrq = &ioa_cfg->hrrq[hrrq_id]; 6590 6591 spin_lock_irqsave(hrrq->lock, hrrq_flags); 6592 /* 6593 * We are currently blocking all devices due to a host reset 6594 * We have told the host to stop giving us new requests, but 6595 * ERP ops don't count. FIXME 6596 */ 6597 if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) { 6598 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6599 return SCSI_MLQUEUE_HOST_BUSY; 6600 } 6601 6602 /* 6603 * FIXME - Create scsi_set_host_offline interface 6604 * and the ioa_is_dead check can be removed 6605 */ 6606 if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) { 6607 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6608 goto err_nodev; 6609 } 6610 6611 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq); 6612 if (ipr_cmd == NULL) { 6613 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6614 return SCSI_MLQUEUE_HOST_BUSY; 6615 } 6616 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6617 6618 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done); 6619 ioarcb = &ipr_cmd->ioarcb; 6620 6621 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 6622 ipr_cmd->scsi_cmd = scsi_cmd; 6623 ipr_cmd->done = ipr_scsi_eh_done; 6624 6625 if (ipr_is_gscsi(res)) { 6626 if (scsi_cmd->underflow == 0) 6627 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6628 6629 if (res->reset_occurred) { 6630 res->reset_occurred = 0; 6631 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 6632 } 6633 } 6634 6635 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 6636 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 6637 6638 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 6639 if (scsi_cmd->flags & SCMD_TAGGED) 6640 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK; 6641 else 6642 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK; 6643 } 6644 6645 if (scsi_cmd->cmnd[0] >= 0xC0 && 6646 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) { 6647 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6648 } 6649 if (res->raw_mode && ipr_is_af_dasd_device(res)) { 6650 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE; 6651 6652 if (scsi_cmd->underflow == 0) 6653 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6654 } 6655 6656 if (ioa_cfg->sis64) 6657 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd); 6658 else 6659 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 6660 6661 spin_lock_irqsave(hrrq->lock, hrrq_flags); 6662 if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) { 6663 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q); 6664 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6665 if (!rc) 6666 scsi_dma_unmap(scsi_cmd); 6667 return SCSI_MLQUEUE_HOST_BUSY; 6668 } 6669 6670 if (unlikely(hrrq->ioa_is_dead)) { 6671 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q); 6672 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6673 scsi_dma_unmap(scsi_cmd); 6674 goto err_nodev; 6675 } 6676 6677 ioarcb->res_handle = res->res_handle; 6678 if (res->needs_sync_complete) { 6679 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 6680 res->needs_sync_complete = 0; 6681 } 6682 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q); 6683 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res)); 6684 ipr_send_command(ipr_cmd); 6685 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6686 return 0; 6687 6688 err_nodev: 6689 spin_lock_irqsave(hrrq->lock, hrrq_flags); 6690 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 6691 scsi_cmd->result = (DID_NO_CONNECT << 16); 6692 scsi_done(scsi_cmd); 6693 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6694 return 0; 6695 } 6696 6697 /** 6698 * ipr_ioctl - IOCTL handler 6699 * @sdev: scsi device struct 6700 * @cmd: IOCTL cmd 6701 * @arg: IOCTL arg 6702 * 6703 * Return value: 6704 * 0 on success / other on failure 6705 **/ 6706 static int ipr_ioctl(struct scsi_device *sdev, unsigned int cmd, 6707 void __user *arg) 6708 { 6709 struct ipr_resource_entry *res; 6710 6711 res = (struct ipr_resource_entry *)sdev->hostdata; 6712 if (res && ipr_is_gata(res)) { 6713 if (cmd == HDIO_GET_IDENTITY) 6714 return -ENOTTY; 6715 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg); 6716 } 6717 6718 return -EINVAL; 6719 } 6720 6721 /** 6722 * ipr_ioa_info - Get information about the card/driver 6723 * @host: scsi host struct 6724 * 6725 * Return value: 6726 * pointer to buffer with description string 6727 **/ 6728 static const char *ipr_ioa_info(struct Scsi_Host *host) 6729 { 6730 static char buffer[512]; 6731 struct ipr_ioa_cfg *ioa_cfg; 6732 unsigned long lock_flags = 0; 6733 6734 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 6735 6736 spin_lock_irqsave(host->host_lock, lock_flags); 6737 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 6738 spin_unlock_irqrestore(host->host_lock, lock_flags); 6739 6740 return buffer; 6741 } 6742 6743 static struct scsi_host_template driver_template = { 6744 .module = THIS_MODULE, 6745 .name = "IPR", 6746 .info = ipr_ioa_info, 6747 .ioctl = ipr_ioctl, 6748 #ifdef CONFIG_COMPAT 6749 .compat_ioctl = ipr_ioctl, 6750 #endif 6751 .queuecommand = ipr_queuecommand, 6752 .dma_need_drain = ata_scsi_dma_need_drain, 6753 .eh_abort_handler = ipr_eh_abort, 6754 .eh_device_reset_handler = ipr_eh_dev_reset, 6755 .eh_host_reset_handler = ipr_eh_host_reset, 6756 .slave_alloc = ipr_slave_alloc, 6757 .slave_configure = ipr_slave_configure, 6758 .slave_destroy = ipr_slave_destroy, 6759 .scan_finished = ipr_scan_finished, 6760 .target_alloc = ipr_target_alloc, 6761 .target_destroy = ipr_target_destroy, 6762 .change_queue_depth = ipr_change_queue_depth, 6763 .bios_param = ipr_biosparam, 6764 .can_queue = IPR_MAX_COMMANDS, 6765 .this_id = -1, 6766 .sg_tablesize = IPR_MAX_SGLIST, 6767 .max_sectors = IPR_IOA_MAX_SECTORS, 6768 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 6769 .shost_groups = ipr_ioa_groups, 6770 .sdev_groups = ipr_dev_groups, 6771 .proc_name = IPR_NAME, 6772 }; 6773 6774 /** 6775 * ipr_ata_phy_reset - libata phy_reset handler 6776 * @ap: ata port to reset 6777 * 6778 **/ 6779 static void ipr_ata_phy_reset(struct ata_port *ap) 6780 { 6781 unsigned long flags; 6782 struct ipr_sata_port *sata_port = ap->private_data; 6783 struct ipr_resource_entry *res = sata_port->res; 6784 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 6785 int rc; 6786 6787 ENTER; 6788 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6789 while (ioa_cfg->in_reset_reload) { 6790 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6791 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6792 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6793 } 6794 6795 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) 6796 goto out_unlock; 6797 6798 rc = ipr_device_reset(ioa_cfg, res); 6799 6800 if (rc) { 6801 ap->link.device[0].class = ATA_DEV_NONE; 6802 goto out_unlock; 6803 } 6804 6805 ap->link.device[0].class = res->ata_class; 6806 if (ap->link.device[0].class == ATA_DEV_UNKNOWN) 6807 ap->link.device[0].class = ATA_DEV_NONE; 6808 6809 out_unlock: 6810 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6811 LEAVE; 6812 } 6813 6814 /** 6815 * ipr_ata_post_internal - Cleanup after an internal command 6816 * @qc: ATA queued command 6817 * 6818 * Return value: 6819 * none 6820 **/ 6821 static void ipr_ata_post_internal(struct ata_queued_cmd *qc) 6822 { 6823 struct ipr_sata_port *sata_port = qc->ap->private_data; 6824 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 6825 struct ipr_cmnd *ipr_cmd; 6826 struct ipr_hrr_queue *hrrq; 6827 unsigned long flags; 6828 6829 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6830 while (ioa_cfg->in_reset_reload) { 6831 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6832 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6833 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6834 } 6835 6836 for_each_hrrq(hrrq, ioa_cfg) { 6837 spin_lock(&hrrq->_lock); 6838 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) { 6839 if (ipr_cmd->qc == qc) { 6840 ipr_device_reset(ioa_cfg, sata_port->res); 6841 break; 6842 } 6843 } 6844 spin_unlock(&hrrq->_lock); 6845 } 6846 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6847 } 6848 6849 /** 6850 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure 6851 * @regs: destination 6852 * @tf: source ATA taskfile 6853 * 6854 * Return value: 6855 * none 6856 **/ 6857 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs, 6858 struct ata_taskfile *tf) 6859 { 6860 regs->feature = tf->feature; 6861 regs->nsect = tf->nsect; 6862 regs->lbal = tf->lbal; 6863 regs->lbam = tf->lbam; 6864 regs->lbah = tf->lbah; 6865 regs->device = tf->device; 6866 regs->command = tf->command; 6867 regs->hob_feature = tf->hob_feature; 6868 regs->hob_nsect = tf->hob_nsect; 6869 regs->hob_lbal = tf->hob_lbal; 6870 regs->hob_lbam = tf->hob_lbam; 6871 regs->hob_lbah = tf->hob_lbah; 6872 regs->ctl = tf->ctl; 6873 } 6874 6875 /** 6876 * ipr_sata_done - done function for SATA commands 6877 * @ipr_cmd: ipr command struct 6878 * 6879 * This function is invoked by the interrupt handler for 6880 * ops generated by the SCSI mid-layer to SATA devices 6881 * 6882 * Return value: 6883 * none 6884 **/ 6885 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd) 6886 { 6887 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6888 struct ata_queued_cmd *qc = ipr_cmd->qc; 6889 struct ipr_sata_port *sata_port = qc->ap->private_data; 6890 struct ipr_resource_entry *res = sata_port->res; 6891 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6892 6893 spin_lock(&ipr_cmd->hrrq->_lock); 6894 if (ipr_cmd->ioa_cfg->sis64) 6895 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata, 6896 sizeof(struct ipr_ioasa_gata)); 6897 else 6898 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata, 6899 sizeof(struct ipr_ioasa_gata)); 6900 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 6901 6902 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET) 6903 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target); 6904 6905 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 6906 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status); 6907 else 6908 qc->err_mask |= ac_err_mask(sata_port->ioasa.status); 6909 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6910 spin_unlock(&ipr_cmd->hrrq->_lock); 6911 ata_qc_complete(qc); 6912 } 6913 6914 /** 6915 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list 6916 * @ipr_cmd: ipr command struct 6917 * @qc: ATA queued command 6918 * 6919 **/ 6920 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd, 6921 struct ata_queued_cmd *qc) 6922 { 6923 u32 ioadl_flags = 0; 6924 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6925 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64; 6926 struct ipr_ioadl64_desc *last_ioadl64 = NULL; 6927 int len = qc->nbytes; 6928 struct scatterlist *sg; 6929 unsigned int si; 6930 dma_addr_t dma_addr = ipr_cmd->dma_addr; 6931 6932 if (len == 0) 6933 return; 6934 6935 if (qc->dma_dir == DMA_TO_DEVICE) { 6936 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 6937 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6938 } else if (qc->dma_dir == DMA_FROM_DEVICE) 6939 ioadl_flags = IPR_IOADL_FLAGS_READ; 6940 6941 ioarcb->data_transfer_length = cpu_to_be32(len); 6942 ioarcb->ioadl_len = 6943 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 6944 ioarcb->u.sis64_addr_data.data_ioadl_addr = 6945 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64)); 6946 6947 for_each_sg(qc->sg, sg, qc->n_elem, si) { 6948 ioadl64->flags = cpu_to_be32(ioadl_flags); 6949 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg)); 6950 ioadl64->address = cpu_to_be64(sg_dma_address(sg)); 6951 6952 last_ioadl64 = ioadl64; 6953 ioadl64++; 6954 } 6955 6956 if (likely(last_ioadl64)) 6957 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 6958 } 6959 6960 /** 6961 * ipr_build_ata_ioadl - Build an ATA scatter/gather list 6962 * @ipr_cmd: ipr command struct 6963 * @qc: ATA queued command 6964 * 6965 **/ 6966 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, 6967 struct ata_queued_cmd *qc) 6968 { 6969 u32 ioadl_flags = 0; 6970 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6971 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 6972 struct ipr_ioadl_desc *last_ioadl = NULL; 6973 int len = qc->nbytes; 6974 struct scatterlist *sg; 6975 unsigned int si; 6976 6977 if (len == 0) 6978 return; 6979 6980 if (qc->dma_dir == DMA_TO_DEVICE) { 6981 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 6982 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6983 ioarcb->data_transfer_length = cpu_to_be32(len); 6984 ioarcb->ioadl_len = 6985 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 6986 } else if (qc->dma_dir == DMA_FROM_DEVICE) { 6987 ioadl_flags = IPR_IOADL_FLAGS_READ; 6988 ioarcb->read_data_transfer_length = cpu_to_be32(len); 6989 ioarcb->read_ioadl_len = 6990 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 6991 } 6992 6993 for_each_sg(qc->sg, sg, qc->n_elem, si) { 6994 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 6995 ioadl->address = cpu_to_be32(sg_dma_address(sg)); 6996 6997 last_ioadl = ioadl; 6998 ioadl++; 6999 } 7000 7001 if (likely(last_ioadl)) 7002 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 7003 } 7004 7005 /** 7006 * ipr_qc_defer - Get a free ipr_cmd 7007 * @qc: queued command 7008 * 7009 * Return value: 7010 * 0 if success 7011 **/ 7012 static int ipr_qc_defer(struct ata_queued_cmd *qc) 7013 { 7014 struct ata_port *ap = qc->ap; 7015 struct ipr_sata_port *sata_port = ap->private_data; 7016 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 7017 struct ipr_cmnd *ipr_cmd; 7018 struct ipr_hrr_queue *hrrq; 7019 int hrrq_id; 7020 7021 hrrq_id = ipr_get_hrrq_index(ioa_cfg); 7022 hrrq = &ioa_cfg->hrrq[hrrq_id]; 7023 7024 qc->lldd_task = NULL; 7025 spin_lock(&hrrq->_lock); 7026 if (unlikely(hrrq->ioa_is_dead)) { 7027 spin_unlock(&hrrq->_lock); 7028 return 0; 7029 } 7030 7031 if (unlikely(!hrrq->allow_cmds)) { 7032 spin_unlock(&hrrq->_lock); 7033 return ATA_DEFER_LINK; 7034 } 7035 7036 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq); 7037 if (ipr_cmd == NULL) { 7038 spin_unlock(&hrrq->_lock); 7039 return ATA_DEFER_LINK; 7040 } 7041 7042 qc->lldd_task = ipr_cmd; 7043 spin_unlock(&hrrq->_lock); 7044 return 0; 7045 } 7046 7047 /** 7048 * ipr_qc_issue - Issue a SATA qc to a device 7049 * @qc: queued command 7050 * 7051 * Return value: 7052 * 0 if success 7053 **/ 7054 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) 7055 { 7056 struct ata_port *ap = qc->ap; 7057 struct ipr_sata_port *sata_port = ap->private_data; 7058 struct ipr_resource_entry *res = sata_port->res; 7059 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 7060 struct ipr_cmnd *ipr_cmd; 7061 struct ipr_ioarcb *ioarcb; 7062 struct ipr_ioarcb_ata_regs *regs; 7063 7064 if (qc->lldd_task == NULL) 7065 ipr_qc_defer(qc); 7066 7067 ipr_cmd = qc->lldd_task; 7068 if (ipr_cmd == NULL) 7069 return AC_ERR_SYSTEM; 7070 7071 qc->lldd_task = NULL; 7072 spin_lock(&ipr_cmd->hrrq->_lock); 7073 if (unlikely(!ipr_cmd->hrrq->allow_cmds || 7074 ipr_cmd->hrrq->ioa_is_dead)) { 7075 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 7076 spin_unlock(&ipr_cmd->hrrq->_lock); 7077 return AC_ERR_SYSTEM; 7078 } 7079 7080 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done); 7081 ioarcb = &ipr_cmd->ioarcb; 7082 7083 if (ioa_cfg->sis64) { 7084 regs = &ipr_cmd->i.ata_ioadl.regs; 7085 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb)); 7086 } else 7087 regs = &ioarcb->u.add_data.u.regs; 7088 7089 memset(regs, 0, sizeof(*regs)); 7090 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs)); 7091 7092 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 7093 ipr_cmd->qc = qc; 7094 ipr_cmd->done = ipr_sata_done; 7095 ipr_cmd->ioarcb.res_handle = res->res_handle; 7096 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU; 7097 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 7098 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 7099 ipr_cmd->dma_use_sg = qc->n_elem; 7100 7101 if (ioa_cfg->sis64) 7102 ipr_build_ata_ioadl64(ipr_cmd, qc); 7103 else 7104 ipr_build_ata_ioadl(ipr_cmd, qc); 7105 7106 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 7107 ipr_copy_sata_tf(regs, &qc->tf); 7108 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN); 7109 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res)); 7110 7111 switch (qc->tf.protocol) { 7112 case ATA_PROT_NODATA: 7113 case ATA_PROT_PIO: 7114 break; 7115 7116 case ATA_PROT_DMA: 7117 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 7118 break; 7119 7120 case ATAPI_PROT_PIO: 7121 case ATAPI_PROT_NODATA: 7122 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 7123 break; 7124 7125 case ATAPI_PROT_DMA: 7126 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 7127 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 7128 break; 7129 7130 default: 7131 WARN_ON(1); 7132 spin_unlock(&ipr_cmd->hrrq->_lock); 7133 return AC_ERR_INVALID; 7134 } 7135 7136 ipr_send_command(ipr_cmd); 7137 spin_unlock(&ipr_cmd->hrrq->_lock); 7138 7139 return 0; 7140 } 7141 7142 /** 7143 * ipr_qc_fill_rtf - Read result TF 7144 * @qc: ATA queued command 7145 * 7146 * Return value: 7147 * true 7148 **/ 7149 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc) 7150 { 7151 struct ipr_sata_port *sata_port = qc->ap->private_data; 7152 struct ipr_ioasa_gata *g = &sata_port->ioasa; 7153 struct ata_taskfile *tf = &qc->result_tf; 7154 7155 tf->feature = g->error; 7156 tf->nsect = g->nsect; 7157 tf->lbal = g->lbal; 7158 tf->lbam = g->lbam; 7159 tf->lbah = g->lbah; 7160 tf->device = g->device; 7161 tf->command = g->status; 7162 tf->hob_nsect = g->hob_nsect; 7163 tf->hob_lbal = g->hob_lbal; 7164 tf->hob_lbam = g->hob_lbam; 7165 tf->hob_lbah = g->hob_lbah; 7166 7167 return true; 7168 } 7169 7170 static struct ata_port_operations ipr_sata_ops = { 7171 .phy_reset = ipr_ata_phy_reset, 7172 .hardreset = ipr_sata_reset, 7173 .post_internal_cmd = ipr_ata_post_internal, 7174 .qc_prep = ata_noop_qc_prep, 7175 .qc_defer = ipr_qc_defer, 7176 .qc_issue = ipr_qc_issue, 7177 .qc_fill_rtf = ipr_qc_fill_rtf, 7178 .port_start = ata_sas_port_start, 7179 .port_stop = ata_sas_port_stop 7180 }; 7181 7182 static struct ata_port_info sata_port_info = { 7183 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA | 7184 ATA_FLAG_SAS_HOST, 7185 .pio_mask = ATA_PIO4_ONLY, 7186 .mwdma_mask = ATA_MWDMA2, 7187 .udma_mask = ATA_UDMA6, 7188 .port_ops = &ipr_sata_ops 7189 }; 7190 7191 #ifdef CONFIG_PPC_PSERIES 7192 static const u16 ipr_blocked_processors[] = { 7193 PVR_NORTHSTAR, 7194 PVR_PULSAR, 7195 PVR_POWER4, 7196 PVR_ICESTAR, 7197 PVR_SSTAR, 7198 PVR_POWER4p, 7199 PVR_630, 7200 PVR_630p 7201 }; 7202 7203 /** 7204 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 7205 * @ioa_cfg: ioa cfg struct 7206 * 7207 * Adapters that use Gemstone revision < 3.1 do not work reliably on 7208 * certain pSeries hardware. This function determines if the given 7209 * adapter is in one of these confgurations or not. 7210 * 7211 * Return value: 7212 * 1 if adapter is not supported / 0 if adapter is supported 7213 **/ 7214 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 7215 { 7216 int i; 7217 7218 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) { 7219 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) { 7220 if (pvr_version_is(ipr_blocked_processors[i])) 7221 return 1; 7222 } 7223 } 7224 return 0; 7225 } 7226 #else 7227 #define ipr_invalid_adapter(ioa_cfg) 0 7228 #endif 7229 7230 /** 7231 * ipr_ioa_bringdown_done - IOA bring down completion. 7232 * @ipr_cmd: ipr command struct 7233 * 7234 * This function processes the completion of an adapter bring down. 7235 * It wakes any reset sleepers. 7236 * 7237 * Return value: 7238 * IPR_RC_JOB_RETURN 7239 **/ 7240 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 7241 { 7242 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7243 int i; 7244 7245 ENTER; 7246 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) { 7247 ipr_trace; 7248 ioa_cfg->scsi_unblock = 1; 7249 schedule_work(&ioa_cfg->work_q); 7250 } 7251 7252 ioa_cfg->in_reset_reload = 0; 7253 ioa_cfg->reset_retries = 0; 7254 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 7255 spin_lock(&ioa_cfg->hrrq[i]._lock); 7256 ioa_cfg->hrrq[i].ioa_is_dead = 1; 7257 spin_unlock(&ioa_cfg->hrrq[i]._lock); 7258 } 7259 wmb(); 7260 7261 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 7262 wake_up_all(&ioa_cfg->reset_wait_q); 7263 LEAVE; 7264 7265 return IPR_RC_JOB_RETURN; 7266 } 7267 7268 /** 7269 * ipr_ioa_reset_done - IOA reset completion. 7270 * @ipr_cmd: ipr command struct 7271 * 7272 * This function processes the completion of an adapter reset. 7273 * It schedules any necessary mid-layer add/removes and 7274 * wakes any reset sleepers. 7275 * 7276 * Return value: 7277 * IPR_RC_JOB_RETURN 7278 **/ 7279 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 7280 { 7281 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7282 struct ipr_resource_entry *res; 7283 int j; 7284 7285 ENTER; 7286 ioa_cfg->in_reset_reload = 0; 7287 for (j = 0; j < ioa_cfg->hrrq_num; j++) { 7288 spin_lock(&ioa_cfg->hrrq[j]._lock); 7289 ioa_cfg->hrrq[j].allow_cmds = 1; 7290 spin_unlock(&ioa_cfg->hrrq[j]._lock); 7291 } 7292 wmb(); 7293 ioa_cfg->reset_cmd = NULL; 7294 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 7295 7296 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 7297 if (res->add_to_ml || res->del_from_ml) { 7298 ipr_trace; 7299 break; 7300 } 7301 } 7302 schedule_work(&ioa_cfg->work_q); 7303 7304 for (j = 0; j < IPR_NUM_HCAMS; j++) { 7305 list_del_init(&ioa_cfg->hostrcb[j]->queue); 7306 if (j < IPR_NUM_LOG_HCAMS) 7307 ipr_send_hcam(ioa_cfg, 7308 IPR_HCAM_CDB_OP_CODE_LOG_DATA, 7309 ioa_cfg->hostrcb[j]); 7310 else 7311 ipr_send_hcam(ioa_cfg, 7312 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 7313 ioa_cfg->hostrcb[j]); 7314 } 7315 7316 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS); 7317 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 7318 7319 ioa_cfg->reset_retries = 0; 7320 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 7321 wake_up_all(&ioa_cfg->reset_wait_q); 7322 7323 ioa_cfg->scsi_unblock = 1; 7324 schedule_work(&ioa_cfg->work_q); 7325 LEAVE; 7326 return IPR_RC_JOB_RETURN; 7327 } 7328 7329 /** 7330 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 7331 * @supported_dev: supported device struct 7332 * @vpids: vendor product id struct 7333 * 7334 * Return value: 7335 * none 7336 **/ 7337 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 7338 struct ipr_std_inq_vpids *vpids) 7339 { 7340 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 7341 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 7342 supported_dev->num_records = 1; 7343 supported_dev->data_length = 7344 cpu_to_be16(sizeof(struct ipr_supported_device)); 7345 supported_dev->reserved = 0; 7346 } 7347 7348 /** 7349 * ipr_set_supported_devs - Send Set Supported Devices for a device 7350 * @ipr_cmd: ipr command struct 7351 * 7352 * This function sends a Set Supported Devices to the adapter 7353 * 7354 * Return value: 7355 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7356 **/ 7357 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 7358 { 7359 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7360 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 7361 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7362 struct ipr_resource_entry *res = ipr_cmd->u.res; 7363 7364 ipr_cmd->job_step = ipr_ioa_reset_done; 7365 7366 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 7367 if (!ipr_is_scsi_disk(res)) 7368 continue; 7369 7370 ipr_cmd->u.res = res; 7371 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids); 7372 7373 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7374 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 7375 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7376 7377 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 7378 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES; 7379 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 7380 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 7381 7382 ipr_init_ioadl(ipr_cmd, 7383 ioa_cfg->vpd_cbs_dma + 7384 offsetof(struct ipr_misc_cbs, supp_dev), 7385 sizeof(struct ipr_supported_device), 7386 IPR_IOADL_FLAGS_WRITE_LAST); 7387 7388 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 7389 IPR_SET_SUP_DEVICE_TIMEOUT); 7390 7391 if (!ioa_cfg->sis64) 7392 ipr_cmd->job_step = ipr_set_supported_devs; 7393 LEAVE; 7394 return IPR_RC_JOB_RETURN; 7395 } 7396 7397 LEAVE; 7398 return IPR_RC_JOB_CONTINUE; 7399 } 7400 7401 /** 7402 * ipr_get_mode_page - Locate specified mode page 7403 * @mode_pages: mode page buffer 7404 * @page_code: page code to find 7405 * @len: minimum required length for mode page 7406 * 7407 * Return value: 7408 * pointer to mode page / NULL on failure 7409 **/ 7410 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 7411 u32 page_code, u32 len) 7412 { 7413 struct ipr_mode_page_hdr *mode_hdr; 7414 u32 page_length; 7415 u32 length; 7416 7417 if (!mode_pages || (mode_pages->hdr.length == 0)) 7418 return NULL; 7419 7420 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 7421 mode_hdr = (struct ipr_mode_page_hdr *) 7422 (mode_pages->data + mode_pages->hdr.block_desc_len); 7423 7424 while (length) { 7425 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 7426 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 7427 return mode_hdr; 7428 break; 7429 } else { 7430 page_length = (sizeof(struct ipr_mode_page_hdr) + 7431 mode_hdr->page_length); 7432 length -= page_length; 7433 mode_hdr = (struct ipr_mode_page_hdr *) 7434 ((unsigned long)mode_hdr + page_length); 7435 } 7436 } 7437 return NULL; 7438 } 7439 7440 /** 7441 * ipr_check_term_power - Check for term power errors 7442 * @ioa_cfg: ioa config struct 7443 * @mode_pages: IOAFP mode pages buffer 7444 * 7445 * Check the IOAFP's mode page 28 for term power errors 7446 * 7447 * Return value: 7448 * nothing 7449 **/ 7450 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 7451 struct ipr_mode_pages *mode_pages) 7452 { 7453 int i; 7454 int entry_length; 7455 struct ipr_dev_bus_entry *bus; 7456 struct ipr_mode_page28 *mode_page; 7457 7458 mode_page = ipr_get_mode_page(mode_pages, 0x28, 7459 sizeof(struct ipr_mode_page28)); 7460 7461 entry_length = mode_page->entry_length; 7462 7463 bus = mode_page->bus; 7464 7465 for (i = 0; i < mode_page->num_entries; i++) { 7466 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 7467 dev_err(&ioa_cfg->pdev->dev, 7468 "Term power is absent on scsi bus %d\n", 7469 bus->res_addr.bus); 7470 } 7471 7472 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 7473 } 7474 } 7475 7476 /** 7477 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 7478 * @ioa_cfg: ioa config struct 7479 * 7480 * Looks through the config table checking for SES devices. If 7481 * the SES device is in the SES table indicating a maximum SCSI 7482 * bus speed, the speed is limited for the bus. 7483 * 7484 * Return value: 7485 * none 7486 **/ 7487 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 7488 { 7489 u32 max_xfer_rate; 7490 int i; 7491 7492 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 7493 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 7494 ioa_cfg->bus_attr[i].bus_width); 7495 7496 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 7497 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 7498 } 7499 } 7500 7501 /** 7502 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 7503 * @ioa_cfg: ioa config struct 7504 * @mode_pages: mode page 28 buffer 7505 * 7506 * Updates mode page 28 based on driver configuration 7507 * 7508 * Return value: 7509 * none 7510 **/ 7511 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 7512 struct ipr_mode_pages *mode_pages) 7513 { 7514 int i, entry_length; 7515 struct ipr_dev_bus_entry *bus; 7516 struct ipr_bus_attributes *bus_attr; 7517 struct ipr_mode_page28 *mode_page; 7518 7519 mode_page = ipr_get_mode_page(mode_pages, 0x28, 7520 sizeof(struct ipr_mode_page28)); 7521 7522 entry_length = mode_page->entry_length; 7523 7524 /* Loop for each device bus entry */ 7525 for (i = 0, bus = mode_page->bus; 7526 i < mode_page->num_entries; 7527 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 7528 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 7529 dev_err(&ioa_cfg->pdev->dev, 7530 "Invalid resource address reported: 0x%08X\n", 7531 IPR_GET_PHYS_LOC(bus->res_addr)); 7532 continue; 7533 } 7534 7535 bus_attr = &ioa_cfg->bus_attr[i]; 7536 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 7537 bus->bus_width = bus_attr->bus_width; 7538 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 7539 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 7540 if (bus_attr->qas_enabled) 7541 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 7542 else 7543 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 7544 } 7545 } 7546 7547 /** 7548 * ipr_build_mode_select - Build a mode select command 7549 * @ipr_cmd: ipr command struct 7550 * @res_handle: resource handle to send command to 7551 * @parm: Byte 2 of Mode Sense command 7552 * @dma_addr: DMA buffer address 7553 * @xfer_len: data transfer length 7554 * 7555 * Return value: 7556 * none 7557 **/ 7558 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 7559 __be32 res_handle, u8 parm, 7560 dma_addr_t dma_addr, u8 xfer_len) 7561 { 7562 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7563 7564 ioarcb->res_handle = res_handle; 7565 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 7566 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 7567 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 7568 ioarcb->cmd_pkt.cdb[1] = parm; 7569 ioarcb->cmd_pkt.cdb[4] = xfer_len; 7570 7571 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST); 7572 } 7573 7574 /** 7575 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 7576 * @ipr_cmd: ipr command struct 7577 * 7578 * This function sets up the SCSI bus attributes and sends 7579 * a Mode Select for Page 28 to activate them. 7580 * 7581 * Return value: 7582 * IPR_RC_JOB_RETURN 7583 **/ 7584 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 7585 { 7586 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7587 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 7588 int length; 7589 7590 ENTER; 7591 ipr_scsi_bus_speed_limit(ioa_cfg); 7592 ipr_check_term_power(ioa_cfg, mode_pages); 7593 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 7594 length = mode_pages->hdr.length + 1; 7595 mode_pages->hdr.length = 0; 7596 7597 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 7598 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 7599 length); 7600 7601 ipr_cmd->job_step = ipr_set_supported_devs; 7602 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 7603 struct ipr_resource_entry, queue); 7604 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7605 7606 LEAVE; 7607 return IPR_RC_JOB_RETURN; 7608 } 7609 7610 /** 7611 * ipr_build_mode_sense - Builds a mode sense command 7612 * @ipr_cmd: ipr command struct 7613 * @res_handle: resource entry struct 7614 * @parm: Byte 2 of mode sense command 7615 * @dma_addr: DMA address of mode sense buffer 7616 * @xfer_len: Size of DMA buffer 7617 * 7618 * Return value: 7619 * none 7620 **/ 7621 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 7622 __be32 res_handle, 7623 u8 parm, dma_addr_t dma_addr, u8 xfer_len) 7624 { 7625 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7626 7627 ioarcb->res_handle = res_handle; 7628 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 7629 ioarcb->cmd_pkt.cdb[2] = parm; 7630 ioarcb->cmd_pkt.cdb[4] = xfer_len; 7631 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 7632 7633 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 7634 } 7635 7636 /** 7637 * ipr_reset_cmd_failed - Handle failure of IOA reset command 7638 * @ipr_cmd: ipr command struct 7639 * 7640 * This function handles the failure of an IOA bringup command. 7641 * 7642 * Return value: 7643 * IPR_RC_JOB_RETURN 7644 **/ 7645 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 7646 { 7647 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7648 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7649 7650 dev_err(&ioa_cfg->pdev->dev, 7651 "0x%02X failed with IOASC: 0x%08X\n", 7652 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 7653 7654 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 7655 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 7656 return IPR_RC_JOB_RETURN; 7657 } 7658 7659 /** 7660 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 7661 * @ipr_cmd: ipr command struct 7662 * 7663 * This function handles the failure of a Mode Sense to the IOAFP. 7664 * Some adapters do not handle all mode pages. 7665 * 7666 * Return value: 7667 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7668 **/ 7669 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 7670 { 7671 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7672 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7673 7674 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 7675 ipr_cmd->job_step = ipr_set_supported_devs; 7676 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 7677 struct ipr_resource_entry, queue); 7678 return IPR_RC_JOB_CONTINUE; 7679 } 7680 7681 return ipr_reset_cmd_failed(ipr_cmd); 7682 } 7683 7684 /** 7685 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 7686 * @ipr_cmd: ipr command struct 7687 * 7688 * This function send a Page 28 mode sense to the IOA to 7689 * retrieve SCSI bus attributes. 7690 * 7691 * Return value: 7692 * IPR_RC_JOB_RETURN 7693 **/ 7694 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 7695 { 7696 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7697 7698 ENTER; 7699 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 7700 0x28, ioa_cfg->vpd_cbs_dma + 7701 offsetof(struct ipr_misc_cbs, mode_pages), 7702 sizeof(struct ipr_mode_pages)); 7703 7704 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 7705 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 7706 7707 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7708 7709 LEAVE; 7710 return IPR_RC_JOB_RETURN; 7711 } 7712 7713 /** 7714 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA 7715 * @ipr_cmd: ipr command struct 7716 * 7717 * This function enables dual IOA RAID support if possible. 7718 * 7719 * Return value: 7720 * IPR_RC_JOB_RETURN 7721 **/ 7722 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd) 7723 { 7724 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7725 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 7726 struct ipr_mode_page24 *mode_page; 7727 int length; 7728 7729 ENTER; 7730 mode_page = ipr_get_mode_page(mode_pages, 0x24, 7731 sizeof(struct ipr_mode_page24)); 7732 7733 if (mode_page) 7734 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF; 7735 7736 length = mode_pages->hdr.length + 1; 7737 mode_pages->hdr.length = 0; 7738 7739 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 7740 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 7741 length); 7742 7743 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 7744 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7745 7746 LEAVE; 7747 return IPR_RC_JOB_RETURN; 7748 } 7749 7750 /** 7751 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense 7752 * @ipr_cmd: ipr command struct 7753 * 7754 * This function handles the failure of a Mode Sense to the IOAFP. 7755 * Some adapters do not handle all mode pages. 7756 * 7757 * Return value: 7758 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7759 **/ 7760 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd) 7761 { 7762 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7763 7764 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 7765 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 7766 return IPR_RC_JOB_CONTINUE; 7767 } 7768 7769 return ipr_reset_cmd_failed(ipr_cmd); 7770 } 7771 7772 /** 7773 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA 7774 * @ipr_cmd: ipr command struct 7775 * 7776 * This function send a mode sense to the IOA to retrieve 7777 * the IOA Advanced Function Control mode page. 7778 * 7779 * Return value: 7780 * IPR_RC_JOB_RETURN 7781 **/ 7782 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd) 7783 { 7784 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7785 7786 ENTER; 7787 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 7788 0x24, ioa_cfg->vpd_cbs_dma + 7789 offsetof(struct ipr_misc_cbs, mode_pages), 7790 sizeof(struct ipr_mode_pages)); 7791 7792 ipr_cmd->job_step = ipr_ioafp_mode_select_page24; 7793 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed; 7794 7795 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7796 7797 LEAVE; 7798 return IPR_RC_JOB_RETURN; 7799 } 7800 7801 /** 7802 * ipr_init_res_table - Initialize the resource table 7803 * @ipr_cmd: ipr command struct 7804 * 7805 * This function looks through the existing resource table, comparing 7806 * it with the config table. This function will take care of old/new 7807 * devices and schedule adding/removing them from the mid-layer 7808 * as appropriate. 7809 * 7810 * Return value: 7811 * IPR_RC_JOB_CONTINUE 7812 **/ 7813 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 7814 { 7815 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7816 struct ipr_resource_entry *res, *temp; 7817 struct ipr_config_table_entry_wrapper cfgtew; 7818 int entries, found, flag, i; 7819 LIST_HEAD(old_res); 7820 7821 ENTER; 7822 if (ioa_cfg->sis64) 7823 flag = ioa_cfg->u.cfg_table64->hdr64.flags; 7824 else 7825 flag = ioa_cfg->u.cfg_table->hdr.flags; 7826 7827 if (flag & IPR_UCODE_DOWNLOAD_REQ) 7828 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 7829 7830 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 7831 list_move_tail(&res->queue, &old_res); 7832 7833 if (ioa_cfg->sis64) 7834 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries); 7835 else 7836 entries = ioa_cfg->u.cfg_table->hdr.num_entries; 7837 7838 for (i = 0; i < entries; i++) { 7839 if (ioa_cfg->sis64) 7840 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i]; 7841 else 7842 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i]; 7843 found = 0; 7844 7845 list_for_each_entry_safe(res, temp, &old_res, queue) { 7846 if (ipr_is_same_device(res, &cfgtew)) { 7847 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7848 found = 1; 7849 break; 7850 } 7851 } 7852 7853 if (!found) { 7854 if (list_empty(&ioa_cfg->free_res_q)) { 7855 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 7856 break; 7857 } 7858 7859 found = 1; 7860 res = list_entry(ioa_cfg->free_res_q.next, 7861 struct ipr_resource_entry, queue); 7862 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7863 ipr_init_res_entry(res, &cfgtew); 7864 res->add_to_ml = 1; 7865 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))) 7866 res->sdev->allow_restart = 1; 7867 7868 if (found) 7869 ipr_update_res_entry(res, &cfgtew); 7870 } 7871 7872 list_for_each_entry_safe(res, temp, &old_res, queue) { 7873 if (res->sdev) { 7874 res->del_from_ml = 1; 7875 res->res_handle = IPR_INVALID_RES_HANDLE; 7876 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7877 } 7878 } 7879 7880 list_for_each_entry_safe(res, temp, &old_res, queue) { 7881 ipr_clear_res_target(res); 7882 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 7883 } 7884 7885 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 7886 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24; 7887 else 7888 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 7889 7890 LEAVE; 7891 return IPR_RC_JOB_CONTINUE; 7892 } 7893 7894 /** 7895 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 7896 * @ipr_cmd: ipr command struct 7897 * 7898 * This function sends a Query IOA Configuration command 7899 * to the adapter to retrieve the IOA configuration table. 7900 * 7901 * Return value: 7902 * IPR_RC_JOB_RETURN 7903 **/ 7904 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 7905 { 7906 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7907 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7908 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 7909 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 7910 7911 ENTER; 7912 if (cap->cap & IPR_CAP_DUAL_IOA_RAID) 7913 ioa_cfg->dual_raid = 1; 7914 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 7915 ucode_vpd->major_release, ucode_vpd->card_type, 7916 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 7917 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7918 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7919 7920 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 7921 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff; 7922 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff; 7923 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff; 7924 7925 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size, 7926 IPR_IOADL_FLAGS_READ_LAST); 7927 7928 ipr_cmd->job_step = ipr_init_res_table; 7929 7930 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7931 7932 LEAVE; 7933 return IPR_RC_JOB_RETURN; 7934 } 7935 7936 static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd) 7937 { 7938 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7939 7940 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) 7941 return IPR_RC_JOB_CONTINUE; 7942 7943 return ipr_reset_cmd_failed(ipr_cmd); 7944 } 7945 7946 static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd, 7947 __be32 res_handle, u8 sa_code) 7948 { 7949 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7950 7951 ioarcb->res_handle = res_handle; 7952 ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION; 7953 ioarcb->cmd_pkt.cdb[1] = sa_code; 7954 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7955 } 7956 7957 /** 7958 * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service 7959 * action 7960 * @ipr_cmd: ipr command struct 7961 * 7962 * Return value: 7963 * none 7964 **/ 7965 static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd) 7966 { 7967 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7968 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7969 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data; 7970 7971 ENTER; 7972 7973 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 7974 7975 if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) { 7976 ipr_build_ioa_service_action(ipr_cmd, 7977 cpu_to_be32(IPR_IOA_RES_HANDLE), 7978 IPR_IOA_SA_CHANGE_CACHE_PARAMS); 7979 7980 ioarcb->cmd_pkt.cdb[2] = 0x40; 7981 7982 ipr_cmd->job_step_failed = ipr_ioa_service_action_failed; 7983 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 7984 IPR_SET_SUP_DEVICE_TIMEOUT); 7985 7986 LEAVE; 7987 return IPR_RC_JOB_RETURN; 7988 } 7989 7990 LEAVE; 7991 return IPR_RC_JOB_CONTINUE; 7992 } 7993 7994 /** 7995 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 7996 * @ipr_cmd: ipr command struct 7997 * @flags: flags to send 7998 * @page: page to inquire 7999 * @dma_addr: DMA address 8000 * @xfer_len: transfer data length 8001 * 8002 * This utility function sends an inquiry to the adapter. 8003 * 8004 * Return value: 8005 * none 8006 **/ 8007 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 8008 dma_addr_t dma_addr, u8 xfer_len) 8009 { 8010 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 8011 8012 ENTER; 8013 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 8014 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 8015 8016 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 8017 ioarcb->cmd_pkt.cdb[1] = flags; 8018 ioarcb->cmd_pkt.cdb[2] = page; 8019 ioarcb->cmd_pkt.cdb[4] = xfer_len; 8020 8021 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 8022 8023 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 8024 LEAVE; 8025 } 8026 8027 /** 8028 * ipr_inquiry_page_supported - Is the given inquiry page supported 8029 * @page0: inquiry page 0 buffer 8030 * @page: page code. 8031 * 8032 * This function determines if the specified inquiry page is supported. 8033 * 8034 * Return value: 8035 * 1 if page is supported / 0 if not 8036 **/ 8037 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 8038 { 8039 int i; 8040 8041 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 8042 if (page0->page[i] == page) 8043 return 1; 8044 8045 return 0; 8046 } 8047 8048 /** 8049 * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter. 8050 * @ipr_cmd: ipr command struct 8051 * 8052 * This function sends a Page 0xC4 inquiry to the adapter 8053 * to retrieve software VPD information. 8054 * 8055 * Return value: 8056 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8057 **/ 8058 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd) 8059 { 8060 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8061 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 8062 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data; 8063 8064 ENTER; 8065 ipr_cmd->job_step = ipr_ioafp_set_caching_parameters; 8066 memset(pageC4, 0, sizeof(*pageC4)); 8067 8068 if (ipr_inquiry_page_supported(page0, 0xC4)) { 8069 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4, 8070 (ioa_cfg->vpd_cbs_dma 8071 + offsetof(struct ipr_misc_cbs, 8072 pageC4_data)), 8073 sizeof(struct ipr_inquiry_pageC4)); 8074 return IPR_RC_JOB_RETURN; 8075 } 8076 8077 LEAVE; 8078 return IPR_RC_JOB_CONTINUE; 8079 } 8080 8081 /** 8082 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter. 8083 * @ipr_cmd: ipr command struct 8084 * 8085 * This function sends a Page 0xD0 inquiry to the adapter 8086 * to retrieve adapter capabilities. 8087 * 8088 * Return value: 8089 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8090 **/ 8091 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd) 8092 { 8093 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8094 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 8095 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 8096 8097 ENTER; 8098 ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry; 8099 memset(cap, 0, sizeof(*cap)); 8100 8101 if (ipr_inquiry_page_supported(page0, 0xD0)) { 8102 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0, 8103 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap), 8104 sizeof(struct ipr_inquiry_cap)); 8105 return IPR_RC_JOB_RETURN; 8106 } 8107 8108 LEAVE; 8109 return IPR_RC_JOB_CONTINUE; 8110 } 8111 8112 /** 8113 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 8114 * @ipr_cmd: ipr command struct 8115 * 8116 * This function sends a Page 3 inquiry to the adapter 8117 * to retrieve software VPD information. 8118 * 8119 * Return value: 8120 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8121 **/ 8122 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 8123 { 8124 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8125 8126 ENTER; 8127 8128 ipr_cmd->job_step = ipr_ioafp_cap_inquiry; 8129 8130 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 8131 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 8132 sizeof(struct ipr_inquiry_page3)); 8133 8134 LEAVE; 8135 return IPR_RC_JOB_RETURN; 8136 } 8137 8138 /** 8139 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 8140 * @ipr_cmd: ipr command struct 8141 * 8142 * This function sends a Page 0 inquiry to the adapter 8143 * to retrieve supported inquiry pages. 8144 * 8145 * Return value: 8146 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8147 **/ 8148 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 8149 { 8150 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8151 char type[5]; 8152 8153 ENTER; 8154 8155 /* Grab the type out of the VPD and store it away */ 8156 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 8157 type[4] = '\0'; 8158 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 8159 8160 if (ipr_invalid_adapter(ioa_cfg)) { 8161 dev_err(&ioa_cfg->pdev->dev, 8162 "Adapter not supported in this hardware configuration.\n"); 8163 8164 if (!ipr_testmode) { 8165 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 8166 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8167 list_add_tail(&ipr_cmd->queue, 8168 &ioa_cfg->hrrq->hrrq_free_q); 8169 return IPR_RC_JOB_RETURN; 8170 } 8171 } 8172 8173 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 8174 8175 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 8176 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 8177 sizeof(struct ipr_inquiry_page0)); 8178 8179 LEAVE; 8180 return IPR_RC_JOB_RETURN; 8181 } 8182 8183 /** 8184 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 8185 * @ipr_cmd: ipr command struct 8186 * 8187 * This function sends a standard inquiry to the adapter. 8188 * 8189 * Return value: 8190 * IPR_RC_JOB_RETURN 8191 **/ 8192 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 8193 { 8194 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8195 8196 ENTER; 8197 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 8198 8199 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 8200 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 8201 sizeof(struct ipr_ioa_vpd)); 8202 8203 LEAVE; 8204 return IPR_RC_JOB_RETURN; 8205 } 8206 8207 /** 8208 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ. 8209 * @ipr_cmd: ipr command struct 8210 * 8211 * This function send an Identify Host Request Response Queue 8212 * command to establish the HRRQ with the adapter. 8213 * 8214 * Return value: 8215 * IPR_RC_JOB_RETURN 8216 **/ 8217 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd) 8218 { 8219 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8220 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 8221 struct ipr_hrr_queue *hrrq; 8222 8223 ENTER; 8224 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 8225 if (ioa_cfg->identify_hrrq_index == 0) 8226 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 8227 8228 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) { 8229 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index]; 8230 8231 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 8232 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 8233 8234 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 8235 if (ioa_cfg->sis64) 8236 ioarcb->cmd_pkt.cdb[1] = 0x1; 8237 8238 if (ioa_cfg->nvectors == 1) 8239 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE; 8240 else 8241 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE; 8242 8243 ioarcb->cmd_pkt.cdb[2] = 8244 ((u64) hrrq->host_rrq_dma >> 24) & 0xff; 8245 ioarcb->cmd_pkt.cdb[3] = 8246 ((u64) hrrq->host_rrq_dma >> 16) & 0xff; 8247 ioarcb->cmd_pkt.cdb[4] = 8248 ((u64) hrrq->host_rrq_dma >> 8) & 0xff; 8249 ioarcb->cmd_pkt.cdb[5] = 8250 ((u64) hrrq->host_rrq_dma) & 0xff; 8251 ioarcb->cmd_pkt.cdb[7] = 8252 ((sizeof(u32) * hrrq->size) >> 8) & 0xff; 8253 ioarcb->cmd_pkt.cdb[8] = 8254 (sizeof(u32) * hrrq->size) & 0xff; 8255 8256 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE) 8257 ioarcb->cmd_pkt.cdb[9] = 8258 ioa_cfg->identify_hrrq_index; 8259 8260 if (ioa_cfg->sis64) { 8261 ioarcb->cmd_pkt.cdb[10] = 8262 ((u64) hrrq->host_rrq_dma >> 56) & 0xff; 8263 ioarcb->cmd_pkt.cdb[11] = 8264 ((u64) hrrq->host_rrq_dma >> 48) & 0xff; 8265 ioarcb->cmd_pkt.cdb[12] = 8266 ((u64) hrrq->host_rrq_dma >> 40) & 0xff; 8267 ioarcb->cmd_pkt.cdb[13] = 8268 ((u64) hrrq->host_rrq_dma >> 32) & 0xff; 8269 } 8270 8271 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE) 8272 ioarcb->cmd_pkt.cdb[14] = 8273 ioa_cfg->identify_hrrq_index; 8274 8275 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 8276 IPR_INTERNAL_TIMEOUT); 8277 8278 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) 8279 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 8280 8281 LEAVE; 8282 return IPR_RC_JOB_RETURN; 8283 } 8284 8285 LEAVE; 8286 return IPR_RC_JOB_CONTINUE; 8287 } 8288 8289 /** 8290 * ipr_reset_timer_done - Adapter reset timer function 8291 * @t: Timer context used to fetch ipr command struct 8292 * 8293 * Description: This function is used in adapter reset processing 8294 * for timing events. If the reset_cmd pointer in the IOA 8295 * config struct is not this adapter's we are doing nested 8296 * resets and fail_all_ops will take care of freeing the 8297 * command block. 8298 * 8299 * Return value: 8300 * none 8301 **/ 8302 static void ipr_reset_timer_done(struct timer_list *t) 8303 { 8304 struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer); 8305 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8306 unsigned long lock_flags = 0; 8307 8308 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8309 8310 if (ioa_cfg->reset_cmd == ipr_cmd) { 8311 list_del(&ipr_cmd->queue); 8312 ipr_cmd->done(ipr_cmd); 8313 } 8314 8315 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8316 } 8317 8318 /** 8319 * ipr_reset_start_timer - Start a timer for adapter reset job 8320 * @ipr_cmd: ipr command struct 8321 * @timeout: timeout value 8322 * 8323 * Description: This function is used in adapter reset processing 8324 * for timing events. If the reset_cmd pointer in the IOA 8325 * config struct is not this adapter's we are doing nested 8326 * resets and fail_all_ops will take care of freeing the 8327 * command block. 8328 * 8329 * Return value: 8330 * none 8331 **/ 8332 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 8333 unsigned long timeout) 8334 { 8335 8336 ENTER; 8337 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 8338 ipr_cmd->done = ipr_reset_ioa_job; 8339 8340 ipr_cmd->timer.expires = jiffies + timeout; 8341 ipr_cmd->timer.function = ipr_reset_timer_done; 8342 add_timer(&ipr_cmd->timer); 8343 } 8344 8345 /** 8346 * ipr_init_ioa_mem - Initialize ioa_cfg control block 8347 * @ioa_cfg: ioa cfg struct 8348 * 8349 * Return value: 8350 * nothing 8351 **/ 8352 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 8353 { 8354 struct ipr_hrr_queue *hrrq; 8355 8356 for_each_hrrq(hrrq, ioa_cfg) { 8357 spin_lock(&hrrq->_lock); 8358 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size); 8359 8360 /* Initialize Host RRQ pointers */ 8361 hrrq->hrrq_start = hrrq->host_rrq; 8362 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1]; 8363 hrrq->hrrq_curr = hrrq->hrrq_start; 8364 hrrq->toggle_bit = 1; 8365 spin_unlock(&hrrq->_lock); 8366 } 8367 wmb(); 8368 8369 ioa_cfg->identify_hrrq_index = 0; 8370 if (ioa_cfg->hrrq_num == 1) 8371 atomic_set(&ioa_cfg->hrrq_index, 0); 8372 else 8373 atomic_set(&ioa_cfg->hrrq_index, 1); 8374 8375 /* Zero out config table */ 8376 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size); 8377 } 8378 8379 /** 8380 * ipr_reset_next_stage - Process IPL stage change based on feedback register. 8381 * @ipr_cmd: ipr command struct 8382 * 8383 * Return value: 8384 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8385 **/ 8386 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd) 8387 { 8388 unsigned long stage, stage_time; 8389 u32 feedback; 8390 volatile u32 int_reg; 8391 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8392 u64 maskval = 0; 8393 8394 feedback = readl(ioa_cfg->regs.init_feedback_reg); 8395 stage = feedback & IPR_IPL_INIT_STAGE_MASK; 8396 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK; 8397 8398 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time); 8399 8400 /* sanity check the stage_time value */ 8401 if (stage_time == 0) 8402 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME; 8403 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME) 8404 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME; 8405 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT) 8406 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT; 8407 8408 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) { 8409 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg); 8410 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8411 stage_time = ioa_cfg->transop_timeout; 8412 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 8413 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) { 8414 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 8415 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 8416 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 8417 maskval = IPR_PCII_IPL_STAGE_CHANGE; 8418 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER; 8419 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg); 8420 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8421 return IPR_RC_JOB_CONTINUE; 8422 } 8423 } 8424 8425 ipr_cmd->timer.expires = jiffies + stage_time * HZ; 8426 ipr_cmd->timer.function = ipr_oper_timeout; 8427 ipr_cmd->done = ipr_reset_ioa_job; 8428 add_timer(&ipr_cmd->timer); 8429 8430 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 8431 8432 return IPR_RC_JOB_RETURN; 8433 } 8434 8435 /** 8436 * ipr_reset_enable_ioa - Enable the IOA following a reset. 8437 * @ipr_cmd: ipr command struct 8438 * 8439 * This function reinitializes some control blocks and 8440 * enables destructive diagnostics on the adapter. 8441 * 8442 * Return value: 8443 * IPR_RC_JOB_RETURN 8444 **/ 8445 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 8446 { 8447 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8448 volatile u32 int_reg; 8449 volatile u64 maskval; 8450 int i; 8451 8452 ENTER; 8453 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 8454 ipr_init_ioa_mem(ioa_cfg); 8455 8456 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 8457 spin_lock(&ioa_cfg->hrrq[i]._lock); 8458 ioa_cfg->hrrq[i].allow_interrupts = 1; 8459 spin_unlock(&ioa_cfg->hrrq[i]._lock); 8460 } 8461 if (ioa_cfg->sis64) { 8462 /* Set the adapter to the correct endian mode. */ 8463 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg); 8464 int_reg = readl(ioa_cfg->regs.endian_swap_reg); 8465 } 8466 8467 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 8468 8469 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 8470 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 8471 ioa_cfg->regs.clr_interrupt_mask_reg32); 8472 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8473 return IPR_RC_JOB_CONTINUE; 8474 } 8475 8476 /* Enable destructive diagnostics on IOA */ 8477 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32); 8478 8479 if (ioa_cfg->sis64) { 8480 maskval = IPR_PCII_IPL_STAGE_CHANGE; 8481 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS; 8482 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg); 8483 } else 8484 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32); 8485 8486 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8487 8488 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 8489 8490 if (ioa_cfg->sis64) { 8491 ipr_cmd->job_step = ipr_reset_next_stage; 8492 return IPR_RC_JOB_CONTINUE; 8493 } 8494 8495 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ); 8496 ipr_cmd->timer.function = ipr_oper_timeout; 8497 ipr_cmd->done = ipr_reset_ioa_job; 8498 add_timer(&ipr_cmd->timer); 8499 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 8500 8501 LEAVE; 8502 return IPR_RC_JOB_RETURN; 8503 } 8504 8505 /** 8506 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 8507 * @ipr_cmd: ipr command struct 8508 * 8509 * This function is invoked when an adapter dump has run out 8510 * of processing time. 8511 * 8512 * Return value: 8513 * IPR_RC_JOB_CONTINUE 8514 **/ 8515 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 8516 { 8517 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8518 8519 if (ioa_cfg->sdt_state == GET_DUMP) 8520 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 8521 else if (ioa_cfg->sdt_state == READ_DUMP) 8522 ioa_cfg->sdt_state = ABORT_DUMP; 8523 8524 ioa_cfg->dump_timeout = 1; 8525 ipr_cmd->job_step = ipr_reset_alert; 8526 8527 return IPR_RC_JOB_CONTINUE; 8528 } 8529 8530 /** 8531 * ipr_unit_check_no_data - Log a unit check/no data error log 8532 * @ioa_cfg: ioa config struct 8533 * 8534 * Logs an error indicating the adapter unit checked, but for some 8535 * reason, we were unable to fetch the unit check buffer. 8536 * 8537 * Return value: 8538 * nothing 8539 **/ 8540 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 8541 { 8542 ioa_cfg->errors_logged++; 8543 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 8544 } 8545 8546 /** 8547 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 8548 * @ioa_cfg: ioa config struct 8549 * 8550 * Fetches the unit check buffer from the adapter by clocking the data 8551 * through the mailbox register. 8552 * 8553 * Return value: 8554 * nothing 8555 **/ 8556 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 8557 { 8558 unsigned long mailbox; 8559 struct ipr_hostrcb *hostrcb; 8560 struct ipr_uc_sdt sdt; 8561 int rc, length; 8562 u32 ioasc; 8563 8564 mailbox = readl(ioa_cfg->ioa_mailbox); 8565 8566 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) { 8567 ipr_unit_check_no_data(ioa_cfg); 8568 return; 8569 } 8570 8571 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 8572 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 8573 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 8574 8575 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) || 8576 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) && 8577 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) { 8578 ipr_unit_check_no_data(ioa_cfg); 8579 return; 8580 } 8581 8582 /* Find length of the first sdt entry (UC buffer) */ 8583 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE) 8584 length = be32_to_cpu(sdt.entry[0].end_token); 8585 else 8586 length = (be32_to_cpu(sdt.entry[0].end_token) - 8587 be32_to_cpu(sdt.entry[0].start_token)) & 8588 IPR_FMT2_MBX_ADDR_MASK; 8589 8590 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 8591 struct ipr_hostrcb, queue); 8592 list_del_init(&hostrcb->queue); 8593 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 8594 8595 rc = ipr_get_ldump_data_section(ioa_cfg, 8596 be32_to_cpu(sdt.entry[0].start_token), 8597 (__be32 *)&hostrcb->hcam, 8598 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 8599 8600 if (!rc) { 8601 ipr_handle_log_data(ioa_cfg, hostrcb); 8602 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 8603 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED && 8604 ioa_cfg->sdt_state == GET_DUMP) 8605 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 8606 } else 8607 ipr_unit_check_no_data(ioa_cfg); 8608 8609 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 8610 } 8611 8612 /** 8613 * ipr_reset_get_unit_check_job - Call to get the unit check buffer. 8614 * @ipr_cmd: ipr command struct 8615 * 8616 * Description: This function will call to get the unit check buffer. 8617 * 8618 * Return value: 8619 * IPR_RC_JOB_RETURN 8620 **/ 8621 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd) 8622 { 8623 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8624 8625 ENTER; 8626 ioa_cfg->ioa_unit_checked = 0; 8627 ipr_get_unit_check_buffer(ioa_cfg); 8628 ipr_cmd->job_step = ipr_reset_alert; 8629 ipr_reset_start_timer(ipr_cmd, 0); 8630 8631 LEAVE; 8632 return IPR_RC_JOB_RETURN; 8633 } 8634 8635 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd) 8636 { 8637 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8638 8639 ENTER; 8640 8641 if (ioa_cfg->sdt_state != GET_DUMP) 8642 return IPR_RC_JOB_RETURN; 8643 8644 if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left || 8645 (readl(ioa_cfg->regs.sense_interrupt_reg) & 8646 IPR_PCII_MAILBOX_STABLE)) { 8647 8648 if (!ipr_cmd->u.time_left) 8649 dev_err(&ioa_cfg->pdev->dev, 8650 "Timed out waiting for Mailbox register.\n"); 8651 8652 ioa_cfg->sdt_state = READ_DUMP; 8653 ioa_cfg->dump_timeout = 0; 8654 if (ioa_cfg->sis64) 8655 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT); 8656 else 8657 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT); 8658 ipr_cmd->job_step = ipr_reset_wait_for_dump; 8659 schedule_work(&ioa_cfg->work_q); 8660 8661 } else { 8662 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 8663 ipr_reset_start_timer(ipr_cmd, 8664 IPR_CHECK_FOR_RESET_TIMEOUT); 8665 } 8666 8667 LEAVE; 8668 return IPR_RC_JOB_RETURN; 8669 } 8670 8671 /** 8672 * ipr_reset_restore_cfg_space - Restore PCI config space. 8673 * @ipr_cmd: ipr command struct 8674 * 8675 * Description: This function restores the saved PCI config space of 8676 * the adapter, fails all outstanding ops back to the callers, and 8677 * fetches the dump/unit check if applicable to this reset. 8678 * 8679 * Return value: 8680 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8681 **/ 8682 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 8683 { 8684 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8685 8686 ENTER; 8687 ioa_cfg->pdev->state_saved = true; 8688 pci_restore_state(ioa_cfg->pdev); 8689 8690 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 8691 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 8692 return IPR_RC_JOB_CONTINUE; 8693 } 8694 8695 ipr_fail_all_ops(ioa_cfg); 8696 8697 if (ioa_cfg->sis64) { 8698 /* Set the adapter to the correct endian mode. */ 8699 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg); 8700 readl(ioa_cfg->regs.endian_swap_reg); 8701 } 8702 8703 if (ioa_cfg->ioa_unit_checked) { 8704 if (ioa_cfg->sis64) { 8705 ipr_cmd->job_step = ipr_reset_get_unit_check_job; 8706 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT); 8707 return IPR_RC_JOB_RETURN; 8708 } else { 8709 ioa_cfg->ioa_unit_checked = 0; 8710 ipr_get_unit_check_buffer(ioa_cfg); 8711 ipr_cmd->job_step = ipr_reset_alert; 8712 ipr_reset_start_timer(ipr_cmd, 0); 8713 return IPR_RC_JOB_RETURN; 8714 } 8715 } 8716 8717 if (ioa_cfg->in_ioa_bringdown) { 8718 ipr_cmd->job_step = ipr_ioa_bringdown_done; 8719 } else if (ioa_cfg->sdt_state == GET_DUMP) { 8720 ipr_cmd->job_step = ipr_dump_mailbox_wait; 8721 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX; 8722 } else { 8723 ipr_cmd->job_step = ipr_reset_enable_ioa; 8724 } 8725 8726 LEAVE; 8727 return IPR_RC_JOB_CONTINUE; 8728 } 8729 8730 /** 8731 * ipr_reset_bist_done - BIST has completed on the adapter. 8732 * @ipr_cmd: ipr command struct 8733 * 8734 * Description: Unblock config space and resume the reset process. 8735 * 8736 * Return value: 8737 * IPR_RC_JOB_CONTINUE 8738 **/ 8739 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd) 8740 { 8741 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8742 8743 ENTER; 8744 if (ioa_cfg->cfg_locked) 8745 pci_cfg_access_unlock(ioa_cfg->pdev); 8746 ioa_cfg->cfg_locked = 0; 8747 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 8748 LEAVE; 8749 return IPR_RC_JOB_CONTINUE; 8750 } 8751 8752 /** 8753 * ipr_reset_start_bist - Run BIST on the adapter. 8754 * @ipr_cmd: ipr command struct 8755 * 8756 * Description: This function runs BIST on the adapter, then delays 2 seconds. 8757 * 8758 * Return value: 8759 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8760 **/ 8761 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 8762 { 8763 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8764 int rc = PCIBIOS_SUCCESSFUL; 8765 8766 ENTER; 8767 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO) 8768 writel(IPR_UPROCI_SIS64_START_BIST, 8769 ioa_cfg->regs.set_uproc_interrupt_reg32); 8770 else 8771 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 8772 8773 if (rc == PCIBIOS_SUCCESSFUL) { 8774 ipr_cmd->job_step = ipr_reset_bist_done; 8775 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 8776 rc = IPR_RC_JOB_RETURN; 8777 } else { 8778 if (ioa_cfg->cfg_locked) 8779 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev); 8780 ioa_cfg->cfg_locked = 0; 8781 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 8782 rc = IPR_RC_JOB_CONTINUE; 8783 } 8784 8785 LEAVE; 8786 return rc; 8787 } 8788 8789 /** 8790 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter 8791 * @ipr_cmd: ipr command struct 8792 * 8793 * Description: This clears PCI reset to the adapter and delays two seconds. 8794 * 8795 * Return value: 8796 * IPR_RC_JOB_RETURN 8797 **/ 8798 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd) 8799 { 8800 ENTER; 8801 ipr_cmd->job_step = ipr_reset_bist_done; 8802 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 8803 LEAVE; 8804 return IPR_RC_JOB_RETURN; 8805 } 8806 8807 /** 8808 * ipr_reset_reset_work - Pulse a PCIe fundamental reset 8809 * @work: work struct 8810 * 8811 * Description: This pulses warm reset to a slot. 8812 * 8813 **/ 8814 static void ipr_reset_reset_work(struct work_struct *work) 8815 { 8816 struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work); 8817 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8818 struct pci_dev *pdev = ioa_cfg->pdev; 8819 unsigned long lock_flags = 0; 8820 8821 ENTER; 8822 pci_set_pcie_reset_state(pdev, pcie_warm_reset); 8823 msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT)); 8824 pci_set_pcie_reset_state(pdev, pcie_deassert_reset); 8825 8826 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8827 if (ioa_cfg->reset_cmd == ipr_cmd) 8828 ipr_reset_ioa_job(ipr_cmd); 8829 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8830 LEAVE; 8831 } 8832 8833 /** 8834 * ipr_reset_slot_reset - Reset the PCI slot of the adapter. 8835 * @ipr_cmd: ipr command struct 8836 * 8837 * Description: This asserts PCI reset to the adapter. 8838 * 8839 * Return value: 8840 * IPR_RC_JOB_RETURN 8841 **/ 8842 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd) 8843 { 8844 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8845 8846 ENTER; 8847 INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work); 8848 queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work); 8849 ipr_cmd->job_step = ipr_reset_slot_reset_done; 8850 LEAVE; 8851 return IPR_RC_JOB_RETURN; 8852 } 8853 8854 /** 8855 * ipr_reset_block_config_access_wait - Wait for permission to block config access 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 / IPR_RC_JOB_RETURN 8862 **/ 8863 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd) 8864 { 8865 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8866 int rc = IPR_RC_JOB_CONTINUE; 8867 8868 if (pci_cfg_access_trylock(ioa_cfg->pdev)) { 8869 ioa_cfg->cfg_locked = 1; 8870 ipr_cmd->job_step = ioa_cfg->reset; 8871 } else { 8872 if (ipr_cmd->u.time_left) { 8873 rc = IPR_RC_JOB_RETURN; 8874 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 8875 ipr_reset_start_timer(ipr_cmd, 8876 IPR_CHECK_FOR_RESET_TIMEOUT); 8877 } else { 8878 ipr_cmd->job_step = ioa_cfg->reset; 8879 dev_err(&ioa_cfg->pdev->dev, 8880 "Timed out waiting to lock config access. Resetting anyway.\n"); 8881 } 8882 } 8883 8884 return rc; 8885 } 8886 8887 /** 8888 * ipr_reset_block_config_access - Block config access to the IOA 8889 * @ipr_cmd: ipr command struct 8890 * 8891 * Description: This attempts to block config access to the IOA 8892 * 8893 * Return value: 8894 * IPR_RC_JOB_CONTINUE 8895 **/ 8896 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd) 8897 { 8898 ipr_cmd->ioa_cfg->cfg_locked = 0; 8899 ipr_cmd->job_step = ipr_reset_block_config_access_wait; 8900 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 8901 return IPR_RC_JOB_CONTINUE; 8902 } 8903 8904 /** 8905 * ipr_reset_allowed - Query whether or not IOA can be reset 8906 * @ioa_cfg: ioa config struct 8907 * 8908 * Return value: 8909 * 0 if reset not allowed / non-zero if reset is allowed 8910 **/ 8911 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 8912 { 8913 volatile u32 temp_reg; 8914 8915 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 8916 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 8917 } 8918 8919 /** 8920 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 8921 * @ipr_cmd: ipr command struct 8922 * 8923 * Description: This function waits for adapter permission to run BIST, 8924 * then runs BIST. If the adapter does not give permission after a 8925 * reasonable time, we will reset the adapter anyway. The impact of 8926 * resetting the adapter without warning the adapter is the risk of 8927 * losing the persistent error log on the adapter. If the adapter is 8928 * reset while it is writing to the flash on the adapter, the flash 8929 * segment will have bad ECC and be zeroed. 8930 * 8931 * Return value: 8932 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8933 **/ 8934 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 8935 { 8936 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8937 int rc = IPR_RC_JOB_RETURN; 8938 8939 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 8940 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 8941 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 8942 } else { 8943 ipr_cmd->job_step = ipr_reset_block_config_access; 8944 rc = IPR_RC_JOB_CONTINUE; 8945 } 8946 8947 return rc; 8948 } 8949 8950 /** 8951 * ipr_reset_alert - Alert the adapter of a pending reset 8952 * @ipr_cmd: ipr command struct 8953 * 8954 * Description: This function alerts the adapter that it will be reset. 8955 * If memory space is not currently enabled, proceed directly 8956 * to running BIST on the adapter. The timer must always be started 8957 * so we guarantee we do not run BIST from ipr_isr. 8958 * 8959 * Return value: 8960 * IPR_RC_JOB_RETURN 8961 **/ 8962 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 8963 { 8964 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8965 u16 cmd_reg; 8966 int rc; 8967 8968 ENTER; 8969 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 8970 8971 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 8972 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 8973 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32); 8974 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 8975 } else { 8976 ipr_cmd->job_step = ipr_reset_block_config_access; 8977 } 8978 8979 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 8980 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 8981 8982 LEAVE; 8983 return IPR_RC_JOB_RETURN; 8984 } 8985 8986 /** 8987 * ipr_reset_quiesce_done - Complete IOA disconnect 8988 * @ipr_cmd: ipr command struct 8989 * 8990 * Description: Freeze the adapter to complete quiesce processing 8991 * 8992 * Return value: 8993 * IPR_RC_JOB_CONTINUE 8994 **/ 8995 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd) 8996 { 8997 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8998 8999 ENTER; 9000 ipr_cmd->job_step = ipr_ioa_bringdown_done; 9001 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 9002 LEAVE; 9003 return IPR_RC_JOB_CONTINUE; 9004 } 9005 9006 /** 9007 * ipr_reset_cancel_hcam_done - Check for outstanding commands 9008 * @ipr_cmd: ipr command struct 9009 * 9010 * Description: Ensure nothing is outstanding to the IOA and 9011 * proceed with IOA disconnect. Otherwise reset the IOA. 9012 * 9013 * Return value: 9014 * IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE 9015 **/ 9016 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd) 9017 { 9018 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9019 struct ipr_cmnd *loop_cmd; 9020 struct ipr_hrr_queue *hrrq; 9021 int rc = IPR_RC_JOB_CONTINUE; 9022 int count = 0; 9023 9024 ENTER; 9025 ipr_cmd->job_step = ipr_reset_quiesce_done; 9026 9027 for_each_hrrq(hrrq, ioa_cfg) { 9028 spin_lock(&hrrq->_lock); 9029 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) { 9030 count++; 9031 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 9032 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 9033 rc = IPR_RC_JOB_RETURN; 9034 break; 9035 } 9036 spin_unlock(&hrrq->_lock); 9037 9038 if (count) 9039 break; 9040 } 9041 9042 LEAVE; 9043 return rc; 9044 } 9045 9046 /** 9047 * ipr_reset_cancel_hcam - Cancel outstanding HCAMs 9048 * @ipr_cmd: ipr command struct 9049 * 9050 * Description: Cancel any oustanding HCAMs to the IOA. 9051 * 9052 * Return value: 9053 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 9054 **/ 9055 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd) 9056 { 9057 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9058 int rc = IPR_RC_JOB_CONTINUE; 9059 struct ipr_cmd_pkt *cmd_pkt; 9060 struct ipr_cmnd *hcam_cmd; 9061 struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ]; 9062 9063 ENTER; 9064 ipr_cmd->job_step = ipr_reset_cancel_hcam_done; 9065 9066 if (!hrrq->ioa_is_dead) { 9067 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) { 9068 list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) { 9069 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC) 9070 continue; 9071 9072 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 9073 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 9074 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 9075 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 9076 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST; 9077 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB; 9078 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff; 9079 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff; 9080 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff; 9081 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff; 9082 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff; 9083 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff; 9084 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff; 9085 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff; 9086 9087 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 9088 IPR_CANCEL_TIMEOUT); 9089 9090 rc = IPR_RC_JOB_RETURN; 9091 ipr_cmd->job_step = ipr_reset_cancel_hcam; 9092 break; 9093 } 9094 } 9095 } else 9096 ipr_cmd->job_step = ipr_reset_alert; 9097 9098 LEAVE; 9099 return rc; 9100 } 9101 9102 /** 9103 * ipr_reset_ucode_download_done - Microcode download completion 9104 * @ipr_cmd: ipr command struct 9105 * 9106 * Description: This function unmaps the microcode download buffer. 9107 * 9108 * Return value: 9109 * IPR_RC_JOB_CONTINUE 9110 **/ 9111 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 9112 { 9113 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9114 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 9115 9116 dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist, 9117 sglist->num_sg, DMA_TO_DEVICE); 9118 9119 ipr_cmd->job_step = ipr_reset_alert; 9120 return IPR_RC_JOB_CONTINUE; 9121 } 9122 9123 /** 9124 * ipr_reset_ucode_download - Download microcode to the adapter 9125 * @ipr_cmd: ipr command struct 9126 * 9127 * Description: This function checks to see if it there is microcode 9128 * to download to the adapter. If there is, a download is performed. 9129 * 9130 * Return value: 9131 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 9132 **/ 9133 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 9134 { 9135 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9136 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 9137 9138 ENTER; 9139 ipr_cmd->job_step = ipr_reset_alert; 9140 9141 if (!sglist) 9142 return IPR_RC_JOB_CONTINUE; 9143 9144 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 9145 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 9146 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 9147 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 9148 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 9149 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 9150 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 9151 9152 if (ioa_cfg->sis64) 9153 ipr_build_ucode_ioadl64(ipr_cmd, sglist); 9154 else 9155 ipr_build_ucode_ioadl(ipr_cmd, sglist); 9156 ipr_cmd->job_step = ipr_reset_ucode_download_done; 9157 9158 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 9159 IPR_WRITE_BUFFER_TIMEOUT); 9160 9161 LEAVE; 9162 return IPR_RC_JOB_RETURN; 9163 } 9164 9165 /** 9166 * ipr_reset_shutdown_ioa - Shutdown the adapter 9167 * @ipr_cmd: ipr command struct 9168 * 9169 * Description: This function issues an adapter shutdown of the 9170 * specified type to the specified adapter as part of the 9171 * adapter reset job. 9172 * 9173 * Return value: 9174 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 9175 **/ 9176 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 9177 { 9178 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9179 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 9180 unsigned long timeout; 9181 int rc = IPR_RC_JOB_CONTINUE; 9182 9183 ENTER; 9184 if (shutdown_type == IPR_SHUTDOWN_QUIESCE) 9185 ipr_cmd->job_step = ipr_reset_cancel_hcam; 9186 else if (shutdown_type != IPR_SHUTDOWN_NONE && 9187 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) { 9188 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 9189 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 9190 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 9191 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 9192 9193 if (shutdown_type == IPR_SHUTDOWN_NORMAL) 9194 timeout = IPR_SHUTDOWN_TIMEOUT; 9195 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 9196 timeout = IPR_INTERNAL_TIMEOUT; 9197 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 9198 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO; 9199 else 9200 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 9201 9202 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 9203 9204 rc = IPR_RC_JOB_RETURN; 9205 ipr_cmd->job_step = ipr_reset_ucode_download; 9206 } else 9207 ipr_cmd->job_step = ipr_reset_alert; 9208 9209 LEAVE; 9210 return rc; 9211 } 9212 9213 /** 9214 * ipr_reset_ioa_job - Adapter reset job 9215 * @ipr_cmd: ipr command struct 9216 * 9217 * Description: This function is the job router for the adapter reset job. 9218 * 9219 * Return value: 9220 * none 9221 **/ 9222 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 9223 { 9224 u32 rc, ioasc; 9225 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9226 9227 do { 9228 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 9229 9230 if (ioa_cfg->reset_cmd != ipr_cmd) { 9231 /* 9232 * We are doing nested adapter resets and this is 9233 * not the current reset job. 9234 */ 9235 list_add_tail(&ipr_cmd->queue, 9236 &ipr_cmd->hrrq->hrrq_free_q); 9237 return; 9238 } 9239 9240 if (IPR_IOASC_SENSE_KEY(ioasc)) { 9241 rc = ipr_cmd->job_step_failed(ipr_cmd); 9242 if (rc == IPR_RC_JOB_RETURN) 9243 return; 9244 } 9245 9246 ipr_reinit_ipr_cmnd(ipr_cmd); 9247 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 9248 rc = ipr_cmd->job_step(ipr_cmd); 9249 } while (rc == IPR_RC_JOB_CONTINUE); 9250 } 9251 9252 /** 9253 * _ipr_initiate_ioa_reset - Initiate an adapter reset 9254 * @ioa_cfg: ioa config struct 9255 * @job_step: first job step of reset job 9256 * @shutdown_type: shutdown type 9257 * 9258 * Description: This function will initiate the reset of the given adapter 9259 * starting at the selected job step. 9260 * If the caller needs to wait on the completion of the reset, 9261 * the caller must sleep on the reset_wait_q. 9262 * 9263 * Return value: 9264 * none 9265 **/ 9266 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 9267 int (*job_step) (struct ipr_cmnd *), 9268 enum ipr_shutdown_type shutdown_type) 9269 { 9270 struct ipr_cmnd *ipr_cmd; 9271 int i; 9272 9273 ioa_cfg->in_reset_reload = 1; 9274 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9275 spin_lock(&ioa_cfg->hrrq[i]._lock); 9276 ioa_cfg->hrrq[i].allow_cmds = 0; 9277 spin_unlock(&ioa_cfg->hrrq[i]._lock); 9278 } 9279 wmb(); 9280 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) { 9281 ioa_cfg->scsi_unblock = 0; 9282 ioa_cfg->scsi_blocked = 1; 9283 scsi_block_requests(ioa_cfg->host); 9284 } 9285 9286 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 9287 ioa_cfg->reset_cmd = ipr_cmd; 9288 ipr_cmd->job_step = job_step; 9289 ipr_cmd->u.shutdown_type = shutdown_type; 9290 9291 ipr_reset_ioa_job(ipr_cmd); 9292 } 9293 9294 /** 9295 * ipr_initiate_ioa_reset - Initiate an adapter reset 9296 * @ioa_cfg: ioa config struct 9297 * @shutdown_type: shutdown type 9298 * 9299 * Description: This function will initiate the reset of the given adapter. 9300 * If the caller needs to wait on the completion of the reset, 9301 * the caller must sleep on the reset_wait_q. 9302 * 9303 * Return value: 9304 * none 9305 **/ 9306 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 9307 enum ipr_shutdown_type shutdown_type) 9308 { 9309 int i; 9310 9311 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 9312 return; 9313 9314 if (ioa_cfg->in_reset_reload) { 9315 if (ioa_cfg->sdt_state == GET_DUMP) 9316 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 9317 else if (ioa_cfg->sdt_state == READ_DUMP) 9318 ioa_cfg->sdt_state = ABORT_DUMP; 9319 } 9320 9321 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 9322 dev_err(&ioa_cfg->pdev->dev, 9323 "IOA taken offline - error recovery failed\n"); 9324 9325 ioa_cfg->reset_retries = 0; 9326 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9327 spin_lock(&ioa_cfg->hrrq[i]._lock); 9328 ioa_cfg->hrrq[i].ioa_is_dead = 1; 9329 spin_unlock(&ioa_cfg->hrrq[i]._lock); 9330 } 9331 wmb(); 9332 9333 if (ioa_cfg->in_ioa_bringdown) { 9334 ioa_cfg->reset_cmd = NULL; 9335 ioa_cfg->in_reset_reload = 0; 9336 ipr_fail_all_ops(ioa_cfg); 9337 wake_up_all(&ioa_cfg->reset_wait_q); 9338 9339 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) { 9340 ioa_cfg->scsi_unblock = 1; 9341 schedule_work(&ioa_cfg->work_q); 9342 } 9343 return; 9344 } else { 9345 ioa_cfg->in_ioa_bringdown = 1; 9346 shutdown_type = IPR_SHUTDOWN_NONE; 9347 } 9348 } 9349 9350 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 9351 shutdown_type); 9352 } 9353 9354 /** 9355 * ipr_reset_freeze - Hold off all I/O activity 9356 * @ipr_cmd: ipr command struct 9357 * 9358 * Description: If the PCI slot is frozen, hold off all I/O 9359 * activity; then, as soon as the slot is available again, 9360 * initiate an adapter reset. 9361 */ 9362 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 9363 { 9364 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9365 int i; 9366 9367 /* Disallow new interrupts, avoid loop */ 9368 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9369 spin_lock(&ioa_cfg->hrrq[i]._lock); 9370 ioa_cfg->hrrq[i].allow_interrupts = 0; 9371 spin_unlock(&ioa_cfg->hrrq[i]._lock); 9372 } 9373 wmb(); 9374 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 9375 ipr_cmd->done = ipr_reset_ioa_job; 9376 return IPR_RC_JOB_RETURN; 9377 } 9378 9379 /** 9380 * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled 9381 * @pdev: PCI device struct 9382 * 9383 * Description: This routine is called to tell us that the MMIO 9384 * access to the IOA has been restored 9385 */ 9386 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev) 9387 { 9388 unsigned long flags = 0; 9389 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9390 9391 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9392 if (!ioa_cfg->probe_done) 9393 pci_save_state(pdev); 9394 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9395 return PCI_ERS_RESULT_NEED_RESET; 9396 } 9397 9398 /** 9399 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 9400 * @pdev: PCI device struct 9401 * 9402 * Description: This routine is called to tell us that the PCI bus 9403 * is down. Can't do anything here, except put the device driver 9404 * into a holding pattern, waiting for the PCI bus to come back. 9405 */ 9406 static void ipr_pci_frozen(struct pci_dev *pdev) 9407 { 9408 unsigned long flags = 0; 9409 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9410 9411 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9412 if (ioa_cfg->probe_done) 9413 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 9414 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9415 } 9416 9417 /** 9418 * ipr_pci_slot_reset - Called when PCI slot has been reset. 9419 * @pdev: PCI device struct 9420 * 9421 * Description: This routine is called by the pci error recovery 9422 * code after the PCI slot has been reset, just before we 9423 * should resume normal operations. 9424 */ 9425 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 9426 { 9427 unsigned long flags = 0; 9428 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9429 9430 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9431 if (ioa_cfg->probe_done) { 9432 if (ioa_cfg->needs_warm_reset) 9433 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 9434 else 9435 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 9436 IPR_SHUTDOWN_NONE); 9437 } else 9438 wake_up_all(&ioa_cfg->eeh_wait_q); 9439 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9440 return PCI_ERS_RESULT_RECOVERED; 9441 } 9442 9443 /** 9444 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 9445 * @pdev: PCI device struct 9446 * 9447 * Description: This routine is called when the PCI bus has 9448 * permanently failed. 9449 */ 9450 static void ipr_pci_perm_failure(struct pci_dev *pdev) 9451 { 9452 unsigned long flags = 0; 9453 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9454 int i; 9455 9456 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9457 if (ioa_cfg->probe_done) { 9458 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 9459 ioa_cfg->sdt_state = ABORT_DUMP; 9460 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1; 9461 ioa_cfg->in_ioa_bringdown = 1; 9462 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9463 spin_lock(&ioa_cfg->hrrq[i]._lock); 9464 ioa_cfg->hrrq[i].allow_cmds = 0; 9465 spin_unlock(&ioa_cfg->hrrq[i]._lock); 9466 } 9467 wmb(); 9468 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 9469 } else 9470 wake_up_all(&ioa_cfg->eeh_wait_q); 9471 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9472 } 9473 9474 /** 9475 * ipr_pci_error_detected - Called when a PCI error is detected. 9476 * @pdev: PCI device struct 9477 * @state: PCI channel state 9478 * 9479 * Description: Called when a PCI error is detected. 9480 * 9481 * Return value: 9482 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 9483 */ 9484 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 9485 pci_channel_state_t state) 9486 { 9487 switch (state) { 9488 case pci_channel_io_frozen: 9489 ipr_pci_frozen(pdev); 9490 return PCI_ERS_RESULT_CAN_RECOVER; 9491 case pci_channel_io_perm_failure: 9492 ipr_pci_perm_failure(pdev); 9493 return PCI_ERS_RESULT_DISCONNECT; 9494 default: 9495 break; 9496 } 9497 return PCI_ERS_RESULT_NEED_RESET; 9498 } 9499 9500 /** 9501 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 9502 * @ioa_cfg: ioa cfg struct 9503 * 9504 * Description: This is the second phase of adapter initialization 9505 * This function takes care of initilizing the adapter to the point 9506 * where it can accept new commands. 9507 * Return value: 9508 * 0 on success / -EIO on failure 9509 **/ 9510 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 9511 { 9512 int rc = 0; 9513 unsigned long host_lock_flags = 0; 9514 9515 ENTER; 9516 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 9517 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 9518 ioa_cfg->probe_done = 1; 9519 if (ioa_cfg->needs_hard_reset) { 9520 ioa_cfg->needs_hard_reset = 0; 9521 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 9522 } else 9523 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 9524 IPR_SHUTDOWN_NONE); 9525 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 9526 9527 LEAVE; 9528 return rc; 9529 } 9530 9531 /** 9532 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 9533 * @ioa_cfg: ioa config struct 9534 * 9535 * Return value: 9536 * none 9537 **/ 9538 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 9539 { 9540 int i; 9541 9542 if (ioa_cfg->ipr_cmnd_list) { 9543 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 9544 if (ioa_cfg->ipr_cmnd_list[i]) 9545 dma_pool_free(ioa_cfg->ipr_cmd_pool, 9546 ioa_cfg->ipr_cmnd_list[i], 9547 ioa_cfg->ipr_cmnd_list_dma[i]); 9548 9549 ioa_cfg->ipr_cmnd_list[i] = NULL; 9550 } 9551 } 9552 9553 dma_pool_destroy(ioa_cfg->ipr_cmd_pool); 9554 9555 kfree(ioa_cfg->ipr_cmnd_list); 9556 kfree(ioa_cfg->ipr_cmnd_list_dma); 9557 ioa_cfg->ipr_cmnd_list = NULL; 9558 ioa_cfg->ipr_cmnd_list_dma = NULL; 9559 ioa_cfg->ipr_cmd_pool = NULL; 9560 } 9561 9562 /** 9563 * ipr_free_mem - Frees memory allocated for an adapter 9564 * @ioa_cfg: ioa cfg struct 9565 * 9566 * Return value: 9567 * nothing 9568 **/ 9569 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 9570 { 9571 int i; 9572 9573 kfree(ioa_cfg->res_entries); 9574 dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs), 9575 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 9576 ipr_free_cmd_blks(ioa_cfg); 9577 9578 for (i = 0; i < ioa_cfg->hrrq_num; i++) 9579 dma_free_coherent(&ioa_cfg->pdev->dev, 9580 sizeof(u32) * ioa_cfg->hrrq[i].size, 9581 ioa_cfg->hrrq[i].host_rrq, 9582 ioa_cfg->hrrq[i].host_rrq_dma); 9583 9584 dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size, 9585 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma); 9586 9587 for (i = 0; i < IPR_MAX_HCAMS; i++) { 9588 dma_free_coherent(&ioa_cfg->pdev->dev, 9589 sizeof(struct ipr_hostrcb), 9590 ioa_cfg->hostrcb[i], 9591 ioa_cfg->hostrcb_dma[i]); 9592 } 9593 9594 ipr_free_dump(ioa_cfg); 9595 kfree(ioa_cfg->trace); 9596 } 9597 9598 /** 9599 * ipr_free_irqs - Free all allocated IRQs for the adapter. 9600 * @ioa_cfg: ipr cfg struct 9601 * 9602 * This function frees all allocated IRQs for the 9603 * specified adapter. 9604 * 9605 * Return value: 9606 * none 9607 **/ 9608 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg) 9609 { 9610 struct pci_dev *pdev = ioa_cfg->pdev; 9611 int i; 9612 9613 for (i = 0; i < ioa_cfg->nvectors; i++) 9614 free_irq(pci_irq_vector(pdev, i), &ioa_cfg->hrrq[i]); 9615 pci_free_irq_vectors(pdev); 9616 } 9617 9618 /** 9619 * ipr_free_all_resources - Free all allocated resources for an adapter. 9620 * @ioa_cfg: ioa config struct 9621 * 9622 * This function frees all allocated resources for the 9623 * specified adapter. 9624 * 9625 * Return value: 9626 * none 9627 **/ 9628 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 9629 { 9630 struct pci_dev *pdev = ioa_cfg->pdev; 9631 9632 ENTER; 9633 ipr_free_irqs(ioa_cfg); 9634 if (ioa_cfg->reset_work_q) 9635 destroy_workqueue(ioa_cfg->reset_work_q); 9636 iounmap(ioa_cfg->hdw_dma_regs); 9637 pci_release_regions(pdev); 9638 ipr_free_mem(ioa_cfg); 9639 scsi_host_put(ioa_cfg->host); 9640 pci_disable_device(pdev); 9641 LEAVE; 9642 } 9643 9644 /** 9645 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 9646 * @ioa_cfg: ioa config struct 9647 * 9648 * Return value: 9649 * 0 on success / -ENOMEM on allocation failure 9650 **/ 9651 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 9652 { 9653 struct ipr_cmnd *ipr_cmd; 9654 struct ipr_ioarcb *ioarcb; 9655 dma_addr_t dma_addr; 9656 int i, entries_each_hrrq, hrrq_id = 0; 9657 9658 ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev, 9659 sizeof(struct ipr_cmnd), 512, 0); 9660 9661 if (!ioa_cfg->ipr_cmd_pool) 9662 return -ENOMEM; 9663 9664 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL); 9665 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL); 9666 9667 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) { 9668 ipr_free_cmd_blks(ioa_cfg); 9669 return -ENOMEM; 9670 } 9671 9672 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9673 if (ioa_cfg->hrrq_num > 1) { 9674 if (i == 0) { 9675 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS; 9676 ioa_cfg->hrrq[i].min_cmd_id = 0; 9677 ioa_cfg->hrrq[i].max_cmd_id = 9678 (entries_each_hrrq - 1); 9679 } else { 9680 entries_each_hrrq = 9681 IPR_NUM_BASE_CMD_BLKS/ 9682 (ioa_cfg->hrrq_num - 1); 9683 ioa_cfg->hrrq[i].min_cmd_id = 9684 IPR_NUM_INTERNAL_CMD_BLKS + 9685 (i - 1) * entries_each_hrrq; 9686 ioa_cfg->hrrq[i].max_cmd_id = 9687 (IPR_NUM_INTERNAL_CMD_BLKS + 9688 i * entries_each_hrrq - 1); 9689 } 9690 } else { 9691 entries_each_hrrq = IPR_NUM_CMD_BLKS; 9692 ioa_cfg->hrrq[i].min_cmd_id = 0; 9693 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1); 9694 } 9695 ioa_cfg->hrrq[i].size = entries_each_hrrq; 9696 } 9697 9698 BUG_ON(ioa_cfg->hrrq_num == 0); 9699 9700 i = IPR_NUM_CMD_BLKS - 9701 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1; 9702 if (i > 0) { 9703 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i; 9704 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i; 9705 } 9706 9707 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 9708 ipr_cmd = dma_pool_zalloc(ioa_cfg->ipr_cmd_pool, 9709 GFP_KERNEL, &dma_addr); 9710 9711 if (!ipr_cmd) { 9712 ipr_free_cmd_blks(ioa_cfg); 9713 return -ENOMEM; 9714 } 9715 9716 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 9717 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 9718 9719 ioarcb = &ipr_cmd->ioarcb; 9720 ipr_cmd->dma_addr = dma_addr; 9721 if (ioa_cfg->sis64) 9722 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr); 9723 else 9724 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 9725 9726 ioarcb->host_response_handle = cpu_to_be32(i << 2); 9727 if (ioa_cfg->sis64) { 9728 ioarcb->u.sis64_addr_data.data_ioadl_addr = 9729 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 9730 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr = 9731 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64)); 9732 } else { 9733 ioarcb->write_ioadl_addr = 9734 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 9735 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 9736 ioarcb->ioasa_host_pci_addr = 9737 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa)); 9738 } 9739 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 9740 ipr_cmd->cmd_index = i; 9741 ipr_cmd->ioa_cfg = ioa_cfg; 9742 ipr_cmd->sense_buffer_dma = dma_addr + 9743 offsetof(struct ipr_cmnd, sense_buffer); 9744 9745 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id; 9746 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id]; 9747 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 9748 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id) 9749 hrrq_id++; 9750 } 9751 9752 return 0; 9753 } 9754 9755 /** 9756 * ipr_alloc_mem - Allocate memory for an adapter 9757 * @ioa_cfg: ioa config struct 9758 * 9759 * Return value: 9760 * 0 on success / non-zero for error 9761 **/ 9762 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 9763 { 9764 struct pci_dev *pdev = ioa_cfg->pdev; 9765 int i, rc = -ENOMEM; 9766 9767 ENTER; 9768 ioa_cfg->res_entries = kcalloc(ioa_cfg->max_devs_supported, 9769 sizeof(struct ipr_resource_entry), 9770 GFP_KERNEL); 9771 9772 if (!ioa_cfg->res_entries) 9773 goto out; 9774 9775 for (i = 0; i < ioa_cfg->max_devs_supported; i++) { 9776 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 9777 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg; 9778 } 9779 9780 ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev, 9781 sizeof(struct ipr_misc_cbs), 9782 &ioa_cfg->vpd_cbs_dma, 9783 GFP_KERNEL); 9784 9785 if (!ioa_cfg->vpd_cbs) 9786 goto out_free_res_entries; 9787 9788 if (ipr_alloc_cmd_blks(ioa_cfg)) 9789 goto out_free_vpd_cbs; 9790 9791 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9792 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev, 9793 sizeof(u32) * ioa_cfg->hrrq[i].size, 9794 &ioa_cfg->hrrq[i].host_rrq_dma, 9795 GFP_KERNEL); 9796 9797 if (!ioa_cfg->hrrq[i].host_rrq) { 9798 while (--i > 0) 9799 dma_free_coherent(&pdev->dev, 9800 sizeof(u32) * ioa_cfg->hrrq[i].size, 9801 ioa_cfg->hrrq[i].host_rrq, 9802 ioa_cfg->hrrq[i].host_rrq_dma); 9803 goto out_ipr_free_cmd_blocks; 9804 } 9805 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg; 9806 } 9807 9808 ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev, 9809 ioa_cfg->cfg_table_size, 9810 &ioa_cfg->cfg_table_dma, 9811 GFP_KERNEL); 9812 9813 if (!ioa_cfg->u.cfg_table) 9814 goto out_free_host_rrq; 9815 9816 for (i = 0; i < IPR_MAX_HCAMS; i++) { 9817 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev, 9818 sizeof(struct ipr_hostrcb), 9819 &ioa_cfg->hostrcb_dma[i], 9820 GFP_KERNEL); 9821 9822 if (!ioa_cfg->hostrcb[i]) 9823 goto out_free_hostrcb_dma; 9824 9825 ioa_cfg->hostrcb[i]->hostrcb_dma = 9826 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 9827 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg; 9828 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 9829 } 9830 9831 ioa_cfg->trace = kcalloc(IPR_NUM_TRACE_ENTRIES, 9832 sizeof(struct ipr_trace_entry), 9833 GFP_KERNEL); 9834 9835 if (!ioa_cfg->trace) 9836 goto out_free_hostrcb_dma; 9837 9838 rc = 0; 9839 out: 9840 LEAVE; 9841 return rc; 9842 9843 out_free_hostrcb_dma: 9844 while (i-- > 0) { 9845 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb), 9846 ioa_cfg->hostrcb[i], 9847 ioa_cfg->hostrcb_dma[i]); 9848 } 9849 dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size, 9850 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma); 9851 out_free_host_rrq: 9852 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9853 dma_free_coherent(&pdev->dev, 9854 sizeof(u32) * ioa_cfg->hrrq[i].size, 9855 ioa_cfg->hrrq[i].host_rrq, 9856 ioa_cfg->hrrq[i].host_rrq_dma); 9857 } 9858 out_ipr_free_cmd_blocks: 9859 ipr_free_cmd_blks(ioa_cfg); 9860 out_free_vpd_cbs: 9861 dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs), 9862 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 9863 out_free_res_entries: 9864 kfree(ioa_cfg->res_entries); 9865 goto out; 9866 } 9867 9868 /** 9869 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 9870 * @ioa_cfg: ioa config struct 9871 * 9872 * Return value: 9873 * none 9874 **/ 9875 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 9876 { 9877 int i; 9878 9879 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 9880 ioa_cfg->bus_attr[i].bus = i; 9881 ioa_cfg->bus_attr[i].qas_enabled = 0; 9882 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 9883 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 9884 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 9885 else 9886 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 9887 } 9888 } 9889 9890 /** 9891 * ipr_init_regs - Initialize IOA registers 9892 * @ioa_cfg: ioa config struct 9893 * 9894 * Return value: 9895 * none 9896 **/ 9897 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg) 9898 { 9899 const struct ipr_interrupt_offsets *p; 9900 struct ipr_interrupts *t; 9901 void __iomem *base; 9902 9903 p = &ioa_cfg->chip_cfg->regs; 9904 t = &ioa_cfg->regs; 9905 base = ioa_cfg->hdw_dma_regs; 9906 9907 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 9908 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 9909 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32; 9910 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 9911 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32; 9912 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 9913 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32; 9914 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 9915 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32; 9916 t->ioarrin_reg = base + p->ioarrin_reg; 9917 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 9918 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32; 9919 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 9920 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32; 9921 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 9922 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32; 9923 9924 if (ioa_cfg->sis64) { 9925 t->init_feedback_reg = base + p->init_feedback_reg; 9926 t->dump_addr_reg = base + p->dump_addr_reg; 9927 t->dump_data_reg = base + p->dump_data_reg; 9928 t->endian_swap_reg = base + p->endian_swap_reg; 9929 } 9930 } 9931 9932 /** 9933 * ipr_init_ioa_cfg - Initialize IOA config struct 9934 * @ioa_cfg: ioa config struct 9935 * @host: scsi host struct 9936 * @pdev: PCI dev struct 9937 * 9938 * Return value: 9939 * none 9940 **/ 9941 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 9942 struct Scsi_Host *host, struct pci_dev *pdev) 9943 { 9944 int i; 9945 9946 ioa_cfg->host = host; 9947 ioa_cfg->pdev = pdev; 9948 ioa_cfg->log_level = ipr_log_level; 9949 ioa_cfg->doorbell = IPR_DOORBELL; 9950 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 9951 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 9952 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 9953 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 9954 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 9955 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 9956 9957 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 9958 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 9959 INIT_LIST_HEAD(&ioa_cfg->hostrcb_report_q); 9960 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 9961 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 9962 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread); 9963 INIT_WORK(&ioa_cfg->scsi_add_work_q, ipr_add_remove_thread); 9964 init_waitqueue_head(&ioa_cfg->reset_wait_q); 9965 init_waitqueue_head(&ioa_cfg->msi_wait_q); 9966 init_waitqueue_head(&ioa_cfg->eeh_wait_q); 9967 ioa_cfg->sdt_state = INACTIVE; 9968 9969 ipr_initialize_bus_attr(ioa_cfg); 9970 ioa_cfg->max_devs_supported = ipr_max_devs; 9971 9972 if (ioa_cfg->sis64) { 9973 host->max_channel = IPR_MAX_SIS64_BUSES; 9974 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS; 9975 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET; 9976 if (ipr_max_devs > IPR_MAX_SIS64_DEVS) 9977 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS; 9978 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64) 9979 + ((sizeof(struct ipr_config_table_entry64) 9980 * ioa_cfg->max_devs_supported))); 9981 } else { 9982 host->max_channel = IPR_VSET_BUS; 9983 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 9984 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 9985 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS) 9986 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS; 9987 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr) 9988 + ((sizeof(struct ipr_config_table_entry) 9989 * ioa_cfg->max_devs_supported))); 9990 } 9991 9992 host->unique_id = host->host_no; 9993 host->max_cmd_len = IPR_MAX_CDB_LEN; 9994 host->can_queue = ioa_cfg->max_cmds; 9995 pci_set_drvdata(pdev, ioa_cfg); 9996 9997 for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) { 9998 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q); 9999 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q); 10000 spin_lock_init(&ioa_cfg->hrrq[i]._lock); 10001 if (i == 0) 10002 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock; 10003 else 10004 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock; 10005 } 10006 } 10007 10008 /** 10009 * ipr_get_chip_info - Find adapter chip information 10010 * @dev_id: PCI device id struct 10011 * 10012 * Return value: 10013 * ptr to chip information on success / NULL on failure 10014 **/ 10015 static const struct ipr_chip_t * 10016 ipr_get_chip_info(const struct pci_device_id *dev_id) 10017 { 10018 int i; 10019 10020 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 10021 if (ipr_chip[i].vendor == dev_id->vendor && 10022 ipr_chip[i].device == dev_id->device) 10023 return &ipr_chip[i]; 10024 return NULL; 10025 } 10026 10027 /** 10028 * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete 10029 * during probe time 10030 * @ioa_cfg: ioa config struct 10031 * 10032 * Return value: 10033 * None 10034 **/ 10035 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg) 10036 { 10037 struct pci_dev *pdev = ioa_cfg->pdev; 10038 10039 if (pci_channel_offline(pdev)) { 10040 wait_event_timeout(ioa_cfg->eeh_wait_q, 10041 !pci_channel_offline(pdev), 10042 IPR_PCI_ERROR_RECOVERY_TIMEOUT); 10043 pci_restore_state(pdev); 10044 } 10045 } 10046 10047 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg) 10048 { 10049 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1; 10050 10051 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) { 10052 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n, 10053 "host%d-%d", ioa_cfg->host->host_no, vec_idx); 10054 ioa_cfg->vectors_info[vec_idx]. 10055 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0; 10056 } 10057 } 10058 10059 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg, 10060 struct pci_dev *pdev) 10061 { 10062 int i, rc; 10063 10064 for (i = 1; i < ioa_cfg->nvectors; i++) { 10065 rc = request_irq(pci_irq_vector(pdev, i), 10066 ipr_isr_mhrrq, 10067 0, 10068 ioa_cfg->vectors_info[i].desc, 10069 &ioa_cfg->hrrq[i]); 10070 if (rc) { 10071 while (--i >= 0) 10072 free_irq(pci_irq_vector(pdev, i), 10073 &ioa_cfg->hrrq[i]); 10074 return rc; 10075 } 10076 } 10077 return 0; 10078 } 10079 10080 /** 10081 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi(). 10082 * @devp: PCI device struct 10083 * @irq: IRQ number 10084 * 10085 * Description: Simply set the msi_received flag to 1 indicating that 10086 * Message Signaled Interrupts are supported. 10087 * 10088 * Return value: 10089 * 0 on success / non-zero on failure 10090 **/ 10091 static irqreturn_t ipr_test_intr(int irq, void *devp) 10092 { 10093 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 10094 unsigned long lock_flags = 0; 10095 10096 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq); 10097 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10098 10099 ioa_cfg->msi_received = 1; 10100 wake_up(&ioa_cfg->msi_wait_q); 10101 10102 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10103 return IRQ_HANDLED; 10104 } 10105 10106 /** 10107 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support. 10108 * @ioa_cfg: ioa config struct 10109 * @pdev: PCI device struct 10110 * 10111 * Description: This routine sets up and initiates a test interrupt to determine 10112 * if the interrupt is received via the ipr_test_intr() service routine. 10113 * If the tests fails, the driver will fall back to LSI. 10114 * 10115 * Return value: 10116 * 0 on success / non-zero on failure 10117 **/ 10118 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev) 10119 { 10120 int rc; 10121 unsigned long lock_flags = 0; 10122 int irq = pci_irq_vector(pdev, 0); 10123 10124 ENTER; 10125 10126 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10127 init_waitqueue_head(&ioa_cfg->msi_wait_q); 10128 ioa_cfg->msi_received = 0; 10129 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 10130 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32); 10131 readl(ioa_cfg->regs.sense_interrupt_mask_reg); 10132 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10133 10134 rc = request_irq(irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg); 10135 if (rc) { 10136 dev_err(&pdev->dev, "Can not assign irq %d\n", irq); 10137 return rc; 10138 } else if (ipr_debug) 10139 dev_info(&pdev->dev, "IRQ assigned: %d\n", irq); 10140 10141 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32); 10142 readl(ioa_cfg->regs.sense_interrupt_reg); 10143 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ); 10144 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10145 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 10146 10147 if (!ioa_cfg->msi_received) { 10148 /* MSI test failed */ 10149 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n"); 10150 rc = -EOPNOTSUPP; 10151 } else if (ipr_debug) 10152 dev_info(&pdev->dev, "MSI test succeeded.\n"); 10153 10154 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10155 10156 free_irq(irq, ioa_cfg); 10157 10158 LEAVE; 10159 10160 return rc; 10161 } 10162 10163 /* ipr_probe_ioa - Allocates memory and does first stage of initialization 10164 * @pdev: PCI device struct 10165 * @dev_id: PCI device id struct 10166 * 10167 * Return value: 10168 * 0 on success / non-zero on failure 10169 **/ 10170 static int ipr_probe_ioa(struct pci_dev *pdev, 10171 const struct pci_device_id *dev_id) 10172 { 10173 struct ipr_ioa_cfg *ioa_cfg; 10174 struct Scsi_Host *host; 10175 unsigned long ipr_regs_pci; 10176 void __iomem *ipr_regs; 10177 int rc = PCIBIOS_SUCCESSFUL; 10178 volatile u32 mask, uproc, interrupts; 10179 unsigned long lock_flags, driver_lock_flags; 10180 unsigned int irq_flag; 10181 10182 ENTER; 10183 10184 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 10185 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 10186 10187 if (!host) { 10188 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 10189 rc = -ENOMEM; 10190 goto out; 10191 } 10192 10193 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 10194 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 10195 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops); 10196 10197 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id); 10198 10199 if (!ioa_cfg->ipr_chip) { 10200 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 10201 dev_id->vendor, dev_id->device); 10202 goto out_scsi_host_put; 10203 } 10204 10205 /* set SIS 32 or SIS 64 */ 10206 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0; 10207 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg; 10208 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr; 10209 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds; 10210 10211 if (ipr_transop_timeout) 10212 ioa_cfg->transop_timeout = ipr_transop_timeout; 10213 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT) 10214 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT; 10215 else 10216 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT; 10217 10218 ioa_cfg->revid = pdev->revision; 10219 10220 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 10221 10222 ipr_regs_pci = pci_resource_start(pdev, 0); 10223 10224 rc = pci_request_regions(pdev, IPR_NAME); 10225 if (rc < 0) { 10226 dev_err(&pdev->dev, 10227 "Couldn't register memory range of registers\n"); 10228 goto out_scsi_host_put; 10229 } 10230 10231 rc = pci_enable_device(pdev); 10232 10233 if (rc || pci_channel_offline(pdev)) { 10234 if (pci_channel_offline(pdev)) { 10235 ipr_wait_for_pci_err_recovery(ioa_cfg); 10236 rc = pci_enable_device(pdev); 10237 } 10238 10239 if (rc) { 10240 dev_err(&pdev->dev, "Cannot enable adapter\n"); 10241 ipr_wait_for_pci_err_recovery(ioa_cfg); 10242 goto out_release_regions; 10243 } 10244 } 10245 10246 ipr_regs = pci_ioremap_bar(pdev, 0); 10247 10248 if (!ipr_regs) { 10249 dev_err(&pdev->dev, 10250 "Couldn't map memory range of registers\n"); 10251 rc = -ENOMEM; 10252 goto out_disable; 10253 } 10254 10255 ioa_cfg->hdw_dma_regs = ipr_regs; 10256 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 10257 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 10258 10259 ipr_init_regs(ioa_cfg); 10260 10261 if (ioa_cfg->sis64) { 10262 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 10263 if (rc < 0) { 10264 dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n"); 10265 rc = dma_set_mask_and_coherent(&pdev->dev, 10266 DMA_BIT_MASK(32)); 10267 } 10268 } else 10269 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 10270 10271 if (rc < 0) { 10272 dev_err(&pdev->dev, "Failed to set DMA mask\n"); 10273 goto cleanup_nomem; 10274 } 10275 10276 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 10277 ioa_cfg->chip_cfg->cache_line_size); 10278 10279 if (rc != PCIBIOS_SUCCESSFUL) { 10280 dev_err(&pdev->dev, "Write of cache line size failed\n"); 10281 ipr_wait_for_pci_err_recovery(ioa_cfg); 10282 rc = -EIO; 10283 goto cleanup_nomem; 10284 } 10285 10286 /* Issue MMIO read to ensure card is not in EEH */ 10287 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg); 10288 ipr_wait_for_pci_err_recovery(ioa_cfg); 10289 10290 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) { 10291 dev_err(&pdev->dev, "The max number of MSIX is %d\n", 10292 IPR_MAX_MSIX_VECTORS); 10293 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS; 10294 } 10295 10296 irq_flag = PCI_IRQ_LEGACY; 10297 if (ioa_cfg->ipr_chip->has_msi) 10298 irq_flag |= PCI_IRQ_MSI | PCI_IRQ_MSIX; 10299 rc = pci_alloc_irq_vectors(pdev, 1, ipr_number_of_msix, irq_flag); 10300 if (rc < 0) { 10301 ipr_wait_for_pci_err_recovery(ioa_cfg); 10302 goto cleanup_nomem; 10303 } 10304 ioa_cfg->nvectors = rc; 10305 10306 if (!pdev->msi_enabled && !pdev->msix_enabled) 10307 ioa_cfg->clear_isr = 1; 10308 10309 pci_set_master(pdev); 10310 10311 if (pci_channel_offline(pdev)) { 10312 ipr_wait_for_pci_err_recovery(ioa_cfg); 10313 pci_set_master(pdev); 10314 if (pci_channel_offline(pdev)) { 10315 rc = -EIO; 10316 goto out_msi_disable; 10317 } 10318 } 10319 10320 if (pdev->msi_enabled || pdev->msix_enabled) { 10321 rc = ipr_test_msi(ioa_cfg, pdev); 10322 switch (rc) { 10323 case 0: 10324 dev_info(&pdev->dev, 10325 "Request for %d MSI%ss succeeded.", ioa_cfg->nvectors, 10326 pdev->msix_enabled ? "-X" : ""); 10327 break; 10328 case -EOPNOTSUPP: 10329 ipr_wait_for_pci_err_recovery(ioa_cfg); 10330 pci_free_irq_vectors(pdev); 10331 10332 ioa_cfg->nvectors = 1; 10333 ioa_cfg->clear_isr = 1; 10334 break; 10335 default: 10336 goto out_msi_disable; 10337 } 10338 } 10339 10340 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors, 10341 (unsigned int)num_online_cpus(), 10342 (unsigned int)IPR_MAX_HRRQ_NUM); 10343 10344 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 10345 goto out_msi_disable; 10346 10347 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 10348 goto out_msi_disable; 10349 10350 rc = ipr_alloc_mem(ioa_cfg); 10351 if (rc < 0) { 10352 dev_err(&pdev->dev, 10353 "Couldn't allocate enough memory for device driver!\n"); 10354 goto out_msi_disable; 10355 } 10356 10357 /* Save away PCI config space for use following IOA reset */ 10358 rc = pci_save_state(pdev); 10359 10360 if (rc != PCIBIOS_SUCCESSFUL) { 10361 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 10362 rc = -EIO; 10363 goto cleanup_nolog; 10364 } 10365 10366 /* 10367 * If HRRQ updated interrupt is not masked, or reset alert is set, 10368 * the card is in an unknown state and needs a hard reset 10369 */ 10370 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 10371 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32); 10372 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); 10373 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 10374 ioa_cfg->needs_hard_reset = 1; 10375 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices) 10376 ioa_cfg->needs_hard_reset = 1; 10377 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED) 10378 ioa_cfg->ioa_unit_checked = 1; 10379 10380 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10381 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 10382 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10383 10384 if (pdev->msi_enabled || pdev->msix_enabled) { 10385 name_msi_vectors(ioa_cfg); 10386 rc = request_irq(pci_irq_vector(pdev, 0), ipr_isr, 0, 10387 ioa_cfg->vectors_info[0].desc, 10388 &ioa_cfg->hrrq[0]); 10389 if (!rc) 10390 rc = ipr_request_other_msi_irqs(ioa_cfg, pdev); 10391 } else { 10392 rc = request_irq(pdev->irq, ipr_isr, 10393 IRQF_SHARED, 10394 IPR_NAME, &ioa_cfg->hrrq[0]); 10395 } 10396 if (rc) { 10397 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 10398 pdev->irq, rc); 10399 goto cleanup_nolog; 10400 } 10401 10402 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) || 10403 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) { 10404 ioa_cfg->needs_warm_reset = 1; 10405 ioa_cfg->reset = ipr_reset_slot_reset; 10406 10407 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d", 10408 WQ_MEM_RECLAIM, host->host_no); 10409 10410 if (!ioa_cfg->reset_work_q) { 10411 dev_err(&pdev->dev, "Couldn't register reset workqueue\n"); 10412 rc = -ENOMEM; 10413 goto out_free_irq; 10414 } 10415 } else 10416 ioa_cfg->reset = ipr_reset_start_bist; 10417 10418 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); 10419 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 10420 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); 10421 10422 LEAVE; 10423 out: 10424 return rc; 10425 10426 out_free_irq: 10427 ipr_free_irqs(ioa_cfg); 10428 cleanup_nolog: 10429 ipr_free_mem(ioa_cfg); 10430 out_msi_disable: 10431 ipr_wait_for_pci_err_recovery(ioa_cfg); 10432 pci_free_irq_vectors(pdev); 10433 cleanup_nomem: 10434 iounmap(ipr_regs); 10435 out_disable: 10436 pci_disable_device(pdev); 10437 out_release_regions: 10438 pci_release_regions(pdev); 10439 out_scsi_host_put: 10440 scsi_host_put(host); 10441 goto out; 10442 } 10443 10444 /** 10445 * ipr_initiate_ioa_bringdown - Bring down an adapter 10446 * @ioa_cfg: ioa config struct 10447 * @shutdown_type: shutdown type 10448 * 10449 * Description: This function will initiate bringing down the adapter. 10450 * This consists of issuing an IOA shutdown to the adapter 10451 * to flush the cache, and running BIST. 10452 * If the caller needs to wait on the completion of the reset, 10453 * the caller must sleep on the reset_wait_q. 10454 * 10455 * Return value: 10456 * none 10457 **/ 10458 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 10459 enum ipr_shutdown_type shutdown_type) 10460 { 10461 ENTER; 10462 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 10463 ioa_cfg->sdt_state = ABORT_DUMP; 10464 ioa_cfg->reset_retries = 0; 10465 ioa_cfg->in_ioa_bringdown = 1; 10466 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 10467 LEAVE; 10468 } 10469 10470 /** 10471 * __ipr_remove - Remove a single adapter 10472 * @pdev: pci device struct 10473 * 10474 * Adapter hot plug remove entry point. 10475 * 10476 * Return value: 10477 * none 10478 **/ 10479 static void __ipr_remove(struct pci_dev *pdev) 10480 { 10481 unsigned long host_lock_flags = 0; 10482 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 10483 int i; 10484 unsigned long driver_lock_flags; 10485 ENTER; 10486 10487 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 10488 while (ioa_cfg->in_reset_reload) { 10489 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 10490 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 10491 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 10492 } 10493 10494 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 10495 spin_lock(&ioa_cfg->hrrq[i]._lock); 10496 ioa_cfg->hrrq[i].removing_ioa = 1; 10497 spin_unlock(&ioa_cfg->hrrq[i]._lock); 10498 } 10499 wmb(); 10500 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 10501 10502 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 10503 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 10504 flush_work(&ioa_cfg->work_q); 10505 if (ioa_cfg->reset_work_q) 10506 flush_workqueue(ioa_cfg->reset_work_q); 10507 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 10508 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 10509 10510 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); 10511 list_del(&ioa_cfg->queue); 10512 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); 10513 10514 if (ioa_cfg->sdt_state == ABORT_DUMP) 10515 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 10516 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 10517 10518 ipr_free_all_resources(ioa_cfg); 10519 10520 LEAVE; 10521 } 10522 10523 /** 10524 * ipr_remove - IOA hot plug remove entry point 10525 * @pdev: pci device struct 10526 * 10527 * Adapter hot plug remove entry point. 10528 * 10529 * Return value: 10530 * none 10531 **/ 10532 static void ipr_remove(struct pci_dev *pdev) 10533 { 10534 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 10535 10536 ENTER; 10537 10538 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 10539 &ipr_trace_attr); 10540 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj, 10541 &ipr_dump_attr); 10542 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj, 10543 &ipr_ioa_async_err_log); 10544 scsi_remove_host(ioa_cfg->host); 10545 10546 __ipr_remove(pdev); 10547 10548 LEAVE; 10549 } 10550 10551 /** 10552 * ipr_probe - Adapter hot plug add entry point 10553 * @pdev: pci device struct 10554 * @dev_id: pci device ID 10555 * 10556 * Return value: 10557 * 0 on success / non-zero on failure 10558 **/ 10559 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) 10560 { 10561 struct ipr_ioa_cfg *ioa_cfg; 10562 unsigned long flags; 10563 int rc, i; 10564 10565 rc = ipr_probe_ioa(pdev, dev_id); 10566 10567 if (rc) 10568 return rc; 10569 10570 ioa_cfg = pci_get_drvdata(pdev); 10571 rc = ipr_probe_ioa_part2(ioa_cfg); 10572 10573 if (rc) { 10574 __ipr_remove(pdev); 10575 return rc; 10576 } 10577 10578 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 10579 10580 if (rc) { 10581 __ipr_remove(pdev); 10582 return rc; 10583 } 10584 10585 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj, 10586 &ipr_trace_attr); 10587 10588 if (rc) { 10589 scsi_remove_host(ioa_cfg->host); 10590 __ipr_remove(pdev); 10591 return rc; 10592 } 10593 10594 rc = sysfs_create_bin_file(&ioa_cfg->host->shost_dev.kobj, 10595 &ipr_ioa_async_err_log); 10596 10597 if (rc) { 10598 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj, 10599 &ipr_dump_attr); 10600 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 10601 &ipr_trace_attr); 10602 scsi_remove_host(ioa_cfg->host); 10603 __ipr_remove(pdev); 10604 return rc; 10605 } 10606 10607 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj, 10608 &ipr_dump_attr); 10609 10610 if (rc) { 10611 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj, 10612 &ipr_ioa_async_err_log); 10613 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 10614 &ipr_trace_attr); 10615 scsi_remove_host(ioa_cfg->host); 10616 __ipr_remove(pdev); 10617 return rc; 10618 } 10619 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 10620 ioa_cfg->scan_enabled = 1; 10621 schedule_work(&ioa_cfg->work_q); 10622 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 10623 10624 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight; 10625 10626 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 10627 for (i = 1; i < ioa_cfg->hrrq_num; i++) { 10628 irq_poll_init(&ioa_cfg->hrrq[i].iopoll, 10629 ioa_cfg->iopoll_weight, ipr_iopoll); 10630 } 10631 } 10632 10633 scsi_scan_host(ioa_cfg->host); 10634 10635 return 0; 10636 } 10637 10638 /** 10639 * ipr_shutdown - Shutdown handler. 10640 * @pdev: pci device struct 10641 * 10642 * This function is invoked upon system shutdown/reboot. It will issue 10643 * an adapter shutdown to the adapter to flush the write cache. 10644 * 10645 * Return value: 10646 * none 10647 **/ 10648 static void ipr_shutdown(struct pci_dev *pdev) 10649 { 10650 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 10651 unsigned long lock_flags = 0; 10652 enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL; 10653 int i; 10654 10655 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10656 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 10657 ioa_cfg->iopoll_weight = 0; 10658 for (i = 1; i < ioa_cfg->hrrq_num; i++) 10659 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll); 10660 } 10661 10662 while (ioa_cfg->in_reset_reload) { 10663 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10664 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 10665 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10666 } 10667 10668 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) 10669 shutdown_type = IPR_SHUTDOWN_QUIESCE; 10670 10671 ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type); 10672 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10673 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 10674 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) { 10675 ipr_free_irqs(ioa_cfg); 10676 pci_disable_device(ioa_cfg->pdev); 10677 } 10678 } 10679 10680 static struct pci_device_id ipr_pci_table[] = { 10681 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 10682 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 }, 10683 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 10684 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 }, 10685 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 10686 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 }, 10687 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 10688 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 }, 10689 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 10690 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 }, 10691 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 10692 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 }, 10693 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 10694 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 }, 10695 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 10696 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 10697 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10698 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 10699 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 10700 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 10701 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 10702 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10703 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 10704 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 10705 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10706 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 10707 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 10708 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 10709 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 10710 IPR_USE_LONG_TRANSOP_TIMEOUT}, 10711 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 10712 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 10713 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10714 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 10715 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 10716 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10717 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 10718 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 }, 10719 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 10720 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 }, 10721 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 10722 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 10723 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET }, 10724 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 10725 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 }, 10726 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 10727 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 }, 10728 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 10729 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 10730 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10731 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 10732 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 10733 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10734 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10735 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 }, 10736 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10737 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 }, 10738 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10739 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 }, 10740 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10741 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 }, 10742 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10743 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 }, 10744 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10745 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 }, 10746 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10747 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 }, 10748 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10749 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 }, 10750 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10751 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 }, 10752 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10753 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 }, 10754 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10755 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 }, 10756 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10757 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 }, 10758 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10759 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 }, 10760 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10761 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 }, 10762 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10763 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 }, 10764 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10765 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 }, 10766 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10767 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 }, 10768 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10769 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 }, 10770 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10771 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 }, 10772 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10773 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 }, 10774 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10775 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 }, 10776 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10777 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 }, 10778 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10779 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 }, 10780 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10781 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 }, 10782 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10783 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 }, 10784 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10785 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 }, 10786 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, 10787 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580A, 0, 0, 0 }, 10788 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, 10789 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580B, 0, 0, 0 }, 10790 { } 10791 }; 10792 MODULE_DEVICE_TABLE(pci, ipr_pci_table); 10793 10794 static const struct pci_error_handlers ipr_err_handler = { 10795 .error_detected = ipr_pci_error_detected, 10796 .mmio_enabled = ipr_pci_mmio_enabled, 10797 .slot_reset = ipr_pci_slot_reset, 10798 }; 10799 10800 static struct pci_driver ipr_driver = { 10801 .name = IPR_NAME, 10802 .id_table = ipr_pci_table, 10803 .probe = ipr_probe, 10804 .remove = ipr_remove, 10805 .shutdown = ipr_shutdown, 10806 .err_handler = &ipr_err_handler, 10807 }; 10808 10809 /** 10810 * ipr_halt_done - Shutdown prepare completion 10811 * @ipr_cmd: ipr command struct 10812 * 10813 * Return value: 10814 * none 10815 **/ 10816 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd) 10817 { 10818 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 10819 } 10820 10821 /** 10822 * ipr_halt - Issue shutdown prepare to all adapters 10823 * @nb: Notifier block 10824 * @event: Notifier event 10825 * @buf: Notifier data (unused) 10826 * 10827 * Return value: 10828 * NOTIFY_OK on success / NOTIFY_DONE on failure 10829 **/ 10830 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf) 10831 { 10832 struct ipr_cmnd *ipr_cmd; 10833 struct ipr_ioa_cfg *ioa_cfg; 10834 unsigned long flags = 0, driver_lock_flags; 10835 10836 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF) 10837 return NOTIFY_DONE; 10838 10839 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); 10840 10841 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) { 10842 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 10843 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds || 10844 (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) { 10845 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 10846 continue; 10847 } 10848 10849 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 10850 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 10851 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 10852 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 10853 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 10854 10855 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 10856 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 10857 } 10858 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); 10859 10860 return NOTIFY_OK; 10861 } 10862 10863 static struct notifier_block ipr_notifier = { 10864 ipr_halt, NULL, 0 10865 }; 10866 10867 /** 10868 * ipr_init - Module entry point 10869 * 10870 * Return value: 10871 * 0 on success / negative value on failure 10872 **/ 10873 static int __init ipr_init(void) 10874 { 10875 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 10876 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 10877 10878 register_reboot_notifier(&ipr_notifier); 10879 return pci_register_driver(&ipr_driver); 10880 } 10881 10882 /** 10883 * ipr_exit - Module unload 10884 * 10885 * Module unload entry point. 10886 * 10887 * Return value: 10888 * none 10889 **/ 10890 static void __exit ipr_exit(void) 10891 { 10892 unregister_reboot_notifier(&ipr_notifier); 10893 pci_unregister_driver(&ipr_driver); 10894 } 10895 10896 module_init(ipr_init); 10897 module_exit(ipr_exit); 10898