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/hdreg.h> 62 #include <linux/reboot.h> 63 #include <linux/stringify.h> 64 #include <asm/io.h> 65 #include <asm/irq.h> 66 #include <asm/processor.h> 67 #include <scsi/scsi.h> 68 #include <scsi/scsi_host.h> 69 #include <scsi/scsi_tcq.h> 70 #include <scsi/scsi_eh.h> 71 #include <scsi/scsi_cmnd.h> 72 #include "ipr.h" 73 74 /* 75 * Global Data 76 */ 77 static LIST_HEAD(ipr_ioa_head); 78 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL; 79 static unsigned int ipr_max_speed = 1; 80 static unsigned int ipr_fastfail = 0; 81 static unsigned int ipr_transop_timeout = 0; 82 static unsigned int ipr_debug = 0; 83 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS; 84 static unsigned int ipr_dual_ioa_raid = 1; 85 static unsigned int ipr_number_of_msix = 16; 86 static unsigned int ipr_fast_reboot; 87 static DEFINE_SPINLOCK(ipr_driver_lock); 88 89 /* This table describes the differences between DMA controller chips */ 90 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { 91 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */ 92 .mailbox = 0x0042C, 93 .max_cmds = 100, 94 .cache_line_size = 0x20, 95 .clear_isr = 1, 96 .iopoll_weight = 0, 97 { 98 .set_interrupt_mask_reg = 0x0022C, 99 .clr_interrupt_mask_reg = 0x00230, 100 .clr_interrupt_mask_reg32 = 0x00230, 101 .sense_interrupt_mask_reg = 0x0022C, 102 .sense_interrupt_mask_reg32 = 0x0022C, 103 .clr_interrupt_reg = 0x00228, 104 .clr_interrupt_reg32 = 0x00228, 105 .sense_interrupt_reg = 0x00224, 106 .sense_interrupt_reg32 = 0x00224, 107 .ioarrin_reg = 0x00404, 108 .sense_uproc_interrupt_reg = 0x00214, 109 .sense_uproc_interrupt_reg32 = 0x00214, 110 .set_uproc_interrupt_reg = 0x00214, 111 .set_uproc_interrupt_reg32 = 0x00214, 112 .clr_uproc_interrupt_reg = 0x00218, 113 .clr_uproc_interrupt_reg32 = 0x00218 114 } 115 }, 116 { /* Snipe and Scamp */ 117 .mailbox = 0x0052C, 118 .max_cmds = 100, 119 .cache_line_size = 0x20, 120 .clear_isr = 1, 121 .iopoll_weight = 0, 122 { 123 .set_interrupt_mask_reg = 0x00288, 124 .clr_interrupt_mask_reg = 0x0028C, 125 .clr_interrupt_mask_reg32 = 0x0028C, 126 .sense_interrupt_mask_reg = 0x00288, 127 .sense_interrupt_mask_reg32 = 0x00288, 128 .clr_interrupt_reg = 0x00284, 129 .clr_interrupt_reg32 = 0x00284, 130 .sense_interrupt_reg = 0x00280, 131 .sense_interrupt_reg32 = 0x00280, 132 .ioarrin_reg = 0x00504, 133 .sense_uproc_interrupt_reg = 0x00290, 134 .sense_uproc_interrupt_reg32 = 0x00290, 135 .set_uproc_interrupt_reg = 0x00290, 136 .set_uproc_interrupt_reg32 = 0x00290, 137 .clr_uproc_interrupt_reg = 0x00294, 138 .clr_uproc_interrupt_reg32 = 0x00294 139 } 140 }, 141 { /* CRoC */ 142 .mailbox = 0x00044, 143 .max_cmds = 1000, 144 .cache_line_size = 0x20, 145 .clear_isr = 0, 146 .iopoll_weight = 64, 147 { 148 .set_interrupt_mask_reg = 0x00010, 149 .clr_interrupt_mask_reg = 0x00018, 150 .clr_interrupt_mask_reg32 = 0x0001C, 151 .sense_interrupt_mask_reg = 0x00010, 152 .sense_interrupt_mask_reg32 = 0x00014, 153 .clr_interrupt_reg = 0x00008, 154 .clr_interrupt_reg32 = 0x0000C, 155 .sense_interrupt_reg = 0x00000, 156 .sense_interrupt_reg32 = 0x00004, 157 .ioarrin_reg = 0x00070, 158 .sense_uproc_interrupt_reg = 0x00020, 159 .sense_uproc_interrupt_reg32 = 0x00024, 160 .set_uproc_interrupt_reg = 0x00020, 161 .set_uproc_interrupt_reg32 = 0x00024, 162 .clr_uproc_interrupt_reg = 0x00028, 163 .clr_uproc_interrupt_reg32 = 0x0002C, 164 .init_feedback_reg = 0x0005C, 165 .dump_addr_reg = 0x00064, 166 .dump_data_reg = 0x00068, 167 .endian_swap_reg = 0x00084 168 } 169 }, 170 }; 171 172 static const struct ipr_chip_t ipr_chip[] = { 173 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 174 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 175 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 176 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 177 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, true, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 178 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] }, 179 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] }, 180 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }, 181 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }, 182 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] } 183 }; 184 185 static int ipr_max_bus_speeds[] = { 186 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE 187 }; 188 189 MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); 190 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); 191 module_param_named(max_speed, ipr_max_speed, uint, 0); 192 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); 193 module_param_named(log_level, ipr_log_level, uint, 0); 194 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); 195 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR); 196 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); 197 module_param_named(transop_timeout, ipr_transop_timeout, int, 0); 198 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); 199 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR); 200 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)"); 201 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0); 202 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)"); 203 module_param_named(max_devs, ipr_max_devs, int, 0); 204 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. " 205 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]"); 206 module_param_named(number_of_msix, ipr_number_of_msix, int, 0); 207 MODULE_PARM_DESC(number_of_msix, "Specify the number of MSIX interrupts to use on capable adapters (1 - 16). (default:16)"); 208 module_param_named(fast_reboot, ipr_fast_reboot, int, S_IRUGO | S_IWUSR); 209 MODULE_PARM_DESC(fast_reboot, "Skip adapter shutdown during reboot. Set to 1 to enable. (default: 0)"); 210 MODULE_LICENSE("GPL"); 211 MODULE_VERSION(IPR_DRIVER_VERSION); 212 213 /* A constant array of IOASCs/URCs/Error Messages */ 214 static const 215 struct ipr_error_table_t ipr_error_table[] = { 216 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL, 217 "8155: An unknown error was received"}, 218 {0x00330000, 0, 0, 219 "Soft underlength error"}, 220 {0x005A0000, 0, 0, 221 "Command to be cancelled not found"}, 222 {0x00808000, 0, 0, 223 "Qualified success"}, 224 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL, 225 "FFFE: Soft device bus error recovered by the IOA"}, 226 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL, 227 "4101: Soft device bus fabric error"}, 228 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL, 229 "FFFC: Logical block guard error recovered by the device"}, 230 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL, 231 "FFFC: Logical block reference tag error recovered by the device"}, 232 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL, 233 "4171: Recovered scatter list tag / sequence number error"}, 234 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL, 235 "FF3D: Recovered logical block CRC error on IOA to Host transfer"}, 236 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL, 237 "4171: Recovered logical block sequence number error on IOA to Host transfer"}, 238 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL, 239 "FFFD: Recovered logical block reference tag error detected by the IOA"}, 240 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL, 241 "FFFD: Logical block guard error recovered by the IOA"}, 242 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL, 243 "FFF9: Device sector reassign successful"}, 244 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL, 245 "FFF7: Media error recovered by device rewrite procedures"}, 246 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL, 247 "7001: IOA sector reassignment successful"}, 248 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL, 249 "FFF9: Soft media error. Sector reassignment recommended"}, 250 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL, 251 "FFF7: Media error recovered by IOA rewrite procedures"}, 252 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL, 253 "FF3D: Soft PCI bus error recovered by the IOA"}, 254 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL, 255 "FFF6: Device hardware error recovered by the IOA"}, 256 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL, 257 "FFF6: Device hardware error recovered by the device"}, 258 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL, 259 "FF3D: Soft IOA error recovered by the IOA"}, 260 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL, 261 "FFFA: Undefined device response recovered by the IOA"}, 262 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL, 263 "FFF6: Device bus error, message or command phase"}, 264 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL, 265 "FFFE: Task Management Function failed"}, 266 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL, 267 "FFF6: Failure prediction threshold exceeded"}, 268 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL, 269 "8009: Impending cache battery pack failure"}, 270 {0x02040100, 0, 0, 271 "Logical Unit in process of becoming ready"}, 272 {0x02040200, 0, 0, 273 "Initializing command required"}, 274 {0x02040400, 0, 0, 275 "34FF: Disk device format in progress"}, 276 {0x02040C00, 0, 0, 277 "Logical unit not accessible, target port in unavailable state"}, 278 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL, 279 "9070: IOA requested reset"}, 280 {0x023F0000, 0, 0, 281 "Synchronization required"}, 282 {0x02408500, 0, 0, 283 "IOA microcode download required"}, 284 {0x02408600, 0, 0, 285 "Device bus connection is prohibited by host"}, 286 {0x024E0000, 0, 0, 287 "No ready, IOA shutdown"}, 288 {0x025A0000, 0, 0, 289 "Not ready, IOA has been shutdown"}, 290 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL, 291 "3020: Storage subsystem configuration error"}, 292 {0x03110B00, 0, 0, 293 "FFF5: Medium error, data unreadable, recommend reassign"}, 294 {0x03110C00, 0, 0, 295 "7000: Medium error, data unreadable, do not reassign"}, 296 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL, 297 "FFF3: Disk media format bad"}, 298 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL, 299 "3002: Addressed device failed to respond to selection"}, 300 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL, 301 "3100: Device bus error"}, 302 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL, 303 "3109: IOA timed out a device command"}, 304 {0x04088000, 0, 0, 305 "3120: SCSI bus is not operational"}, 306 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL, 307 "4100: Hard device bus fabric error"}, 308 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL, 309 "310C: Logical block guard error detected by the device"}, 310 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL, 311 "310C: Logical block reference tag error detected by the device"}, 312 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL, 313 "4170: Scatter list tag / sequence number error"}, 314 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL, 315 "8150: Logical block CRC error on IOA to Host transfer"}, 316 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL, 317 "4170: Logical block sequence number error on IOA to Host transfer"}, 318 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL, 319 "310D: Logical block reference tag error detected by the IOA"}, 320 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL, 321 "310D: Logical block guard error detected by the IOA"}, 322 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL, 323 "9000: IOA reserved area data check"}, 324 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL, 325 "9001: IOA reserved area invalid data pattern"}, 326 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL, 327 "9002: IOA reserved area LRC error"}, 328 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL, 329 "Hardware Error, IOA metadata access error"}, 330 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL, 331 "102E: Out of alternate sectors for disk storage"}, 332 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL, 333 "FFF4: Data transfer underlength error"}, 334 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL, 335 "FFF4: Data transfer overlength error"}, 336 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL, 337 "3400: Logical unit failure"}, 338 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL, 339 "FFF4: Device microcode is corrupt"}, 340 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL, 341 "8150: PCI bus error"}, 342 {0x04430000, 1, 0, 343 "Unsupported device bus message received"}, 344 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL, 345 "FFF4: Disk device problem"}, 346 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL, 347 "8150: Permanent IOA failure"}, 348 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL, 349 "3010: Disk device returned wrong response to IOA"}, 350 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL, 351 "8151: IOA microcode error"}, 352 {0x04448500, 0, 0, 353 "Device bus status error"}, 354 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL, 355 "8157: IOA error requiring IOA reset to recover"}, 356 {0x04448700, 0, 0, 357 "ATA device status error"}, 358 {0x04490000, 0, 0, 359 "Message reject received from the device"}, 360 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL, 361 "8008: A permanent cache battery pack failure occurred"}, 362 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL, 363 "9090: Disk unit has been modified after the last known status"}, 364 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL, 365 "9081: IOA detected device error"}, 366 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL, 367 "9082: IOA detected device error"}, 368 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL, 369 "3110: Device bus error, message or command phase"}, 370 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL, 371 "3110: SAS Command / Task Management Function failed"}, 372 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL, 373 "9091: Incorrect hardware configuration change has been detected"}, 374 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL, 375 "9073: Invalid multi-adapter configuration"}, 376 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL, 377 "4010: Incorrect connection between cascaded expanders"}, 378 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL, 379 "4020: Connections exceed IOA design limits"}, 380 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL, 381 "4030: Incorrect multipath connection"}, 382 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL, 383 "4110: Unsupported enclosure function"}, 384 {0x04679800, 0, IPR_DEFAULT_LOG_LEVEL, 385 "4120: SAS cable VPD cannot be read"}, 386 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL, 387 "FFF4: Command to logical unit failed"}, 388 {0x05240000, 1, 0, 389 "Illegal request, invalid request type or request packet"}, 390 {0x05250000, 0, 0, 391 "Illegal request, invalid resource handle"}, 392 {0x05258000, 0, 0, 393 "Illegal request, commands not allowed to this device"}, 394 {0x05258100, 0, 0, 395 "Illegal request, command not allowed to a secondary adapter"}, 396 {0x05258200, 0, 0, 397 "Illegal request, command not allowed to a non-optimized resource"}, 398 {0x05260000, 0, 0, 399 "Illegal request, invalid field in parameter list"}, 400 {0x05260100, 0, 0, 401 "Illegal request, parameter not supported"}, 402 {0x05260200, 0, 0, 403 "Illegal request, parameter value invalid"}, 404 {0x052C0000, 0, 0, 405 "Illegal request, command sequence error"}, 406 {0x052C8000, 1, 0, 407 "Illegal request, dual adapter support not enabled"}, 408 {0x052C8100, 1, 0, 409 "Illegal request, another cable connector was physically disabled"}, 410 {0x054E8000, 1, 0, 411 "Illegal request, inconsistent group id/group count"}, 412 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL, 413 "9031: Array protection temporarily suspended, protection resuming"}, 414 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL, 415 "9040: Array protection temporarily suspended, protection resuming"}, 416 {0x060B0100, 0, IPR_DEFAULT_LOG_LEVEL, 417 "4080: IOA exceeded maximum operating temperature"}, 418 {0x060B8000, 0, IPR_DEFAULT_LOG_LEVEL, 419 "4085: Service required"}, 420 {0x060B8100, 0, IPR_DEFAULT_LOG_LEVEL, 421 "4086: SAS Adapter Hardware Configuration Error"}, 422 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL, 423 "3140: Device bus not ready to ready transition"}, 424 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL, 425 "FFFB: SCSI bus was reset"}, 426 {0x06290500, 0, 0, 427 "FFFE: SCSI bus transition to single ended"}, 428 {0x06290600, 0, 0, 429 "FFFE: SCSI bus transition to LVD"}, 430 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL, 431 "FFFB: SCSI bus was reset by another initiator"}, 432 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL, 433 "3029: A device replacement has occurred"}, 434 {0x063F8300, 0, IPR_DEFAULT_LOG_LEVEL, 435 "4102: Device bus fabric performance degradation"}, 436 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL, 437 "9051: IOA cache data exists for a missing or failed device"}, 438 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL, 439 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"}, 440 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL, 441 "9025: Disk unit is not supported at its physical location"}, 442 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL, 443 "3020: IOA detected a SCSI bus configuration error"}, 444 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL, 445 "3150: SCSI bus configuration error"}, 446 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL, 447 "9074: Asymmetric advanced function disk configuration"}, 448 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL, 449 "4040: Incomplete multipath connection between IOA and enclosure"}, 450 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL, 451 "4041: Incomplete multipath connection between enclosure and device"}, 452 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL, 453 "9075: Incomplete multipath connection between IOA and remote IOA"}, 454 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL, 455 "9076: Configuration error, missing remote IOA"}, 456 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL, 457 "4050: Enclosure does not support a required multipath function"}, 458 {0x06679800, 0, IPR_DEFAULT_LOG_LEVEL, 459 "4121: Configuration error, required cable is missing"}, 460 {0x06679900, 0, IPR_DEFAULT_LOG_LEVEL, 461 "4122: Cable is not plugged into the correct location on remote IOA"}, 462 {0x06679A00, 0, IPR_DEFAULT_LOG_LEVEL, 463 "4123: Configuration error, invalid cable vital product data"}, 464 {0x06679B00, 0, IPR_DEFAULT_LOG_LEVEL, 465 "4124: Configuration error, both cable ends are plugged into the same IOA"}, 466 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL, 467 "4070: Logically bad block written on device"}, 468 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL, 469 "9041: Array protection temporarily suspended"}, 470 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL, 471 "9042: Corrupt array parity detected on specified device"}, 472 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL, 473 "9030: Array no longer protected due to missing or failed disk unit"}, 474 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL, 475 "9071: Link operational transition"}, 476 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL, 477 "9072: Link not operational transition"}, 478 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL, 479 "9032: Array exposed but still protected"}, 480 {0x066B8300, 0, IPR_DEBUG_LOG_LEVEL, 481 "70DD: Device forced failed by disrupt device command"}, 482 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL, 483 "4061: Multipath redundancy level got better"}, 484 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL, 485 "4060: Multipath redundancy level got worse"}, 486 {0x06808100, 0, IPR_DEBUG_LOG_LEVEL, 487 "9083: Device raw mode enabled"}, 488 {0x06808200, 0, IPR_DEBUG_LOG_LEVEL, 489 "9084: Device raw mode disabled"}, 490 {0x07270000, 0, 0, 491 "Failure due to other device"}, 492 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL, 493 "9008: IOA does not support functions expected by devices"}, 494 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL, 495 "9010: Cache data associated with attached devices cannot be found"}, 496 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL, 497 "9011: Cache data belongs to devices other than those attached"}, 498 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL, 499 "9020: Array missing 2 or more devices with only 1 device present"}, 500 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL, 501 "9021: Array missing 2 or more devices with 2 or more devices present"}, 502 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL, 503 "9022: Exposed array is missing a required device"}, 504 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL, 505 "9023: Array member(s) not at required physical locations"}, 506 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL, 507 "9024: Array not functional due to present hardware configuration"}, 508 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL, 509 "9026: Array not functional due to present hardware configuration"}, 510 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL, 511 "9027: Array is missing a device and parity is out of sync"}, 512 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL, 513 "9028: Maximum number of arrays already exist"}, 514 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL, 515 "9050: Required cache data cannot be located for a disk unit"}, 516 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL, 517 "9052: Cache data exists for a device that has been modified"}, 518 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL, 519 "9054: IOA resources not available due to previous problems"}, 520 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL, 521 "9092: Disk unit requires initialization before use"}, 522 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL, 523 "9029: Incorrect hardware configuration change has been detected"}, 524 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL, 525 "9060: One or more disk pairs are missing from an array"}, 526 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL, 527 "9061: One or more disks are missing from an array"}, 528 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL, 529 "9062: One or more disks are missing from an array"}, 530 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL, 531 "9063: Maximum number of functional arrays has been exceeded"}, 532 {0x07279A00, 0, 0, 533 "Data protect, other volume set problem"}, 534 {0x0B260000, 0, 0, 535 "Aborted command, invalid descriptor"}, 536 {0x0B3F9000, 0, 0, 537 "Target operating conditions have changed, dual adapter takeover"}, 538 {0x0B530200, 0, 0, 539 "Aborted command, medium removal prevented"}, 540 {0x0B5A0000, 0, 0, 541 "Command terminated by host"}, 542 {0x0B5B8000, 0, 0, 543 "Aborted command, command terminated by host"} 544 }; 545 546 static const struct ipr_ses_table_entry ipr_ses_table[] = { 547 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, 548 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, 549 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ 550 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ 551 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ 552 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ 553 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, 554 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, 555 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 556 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 557 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, 558 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, 559 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } 560 }; 561 562 /* 563 * Function Prototypes 564 */ 565 static int ipr_reset_alert(struct ipr_cmnd *); 566 static void ipr_process_ccn(struct ipr_cmnd *); 567 static void ipr_process_error(struct ipr_cmnd *); 568 static void ipr_reset_ioa_job(struct ipr_cmnd *); 569 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, 570 enum ipr_shutdown_type); 571 572 #ifdef CONFIG_SCSI_IPR_TRACE 573 /** 574 * ipr_trc_hook - Add a trace entry to the driver trace 575 * @ipr_cmd: ipr command struct 576 * @type: trace type 577 * @add_data: additional data 578 * 579 * Return value: 580 * none 581 **/ 582 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, 583 u8 type, u32 add_data) 584 { 585 struct ipr_trace_entry *trace_entry; 586 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 587 unsigned int trace_index; 588 589 trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK; 590 trace_entry = &ioa_cfg->trace[trace_index]; 591 trace_entry->time = jiffies; 592 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; 593 trace_entry->type = type; 594 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff; 595 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; 596 trace_entry->u.add_data = add_data; 597 wmb(); 598 } 599 #else 600 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0) 601 #endif 602 603 /** 604 * ipr_lock_and_done - Acquire lock and complete command 605 * @ipr_cmd: ipr command struct 606 * 607 * Return value: 608 * none 609 **/ 610 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd) 611 { 612 unsigned long lock_flags; 613 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 614 615 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 616 ipr_cmd->done(ipr_cmd); 617 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 618 } 619 620 /** 621 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse 622 * @ipr_cmd: ipr command struct 623 * 624 * Return value: 625 * none 626 **/ 627 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 628 { 629 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 630 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 631 dma_addr_t dma_addr = ipr_cmd->dma_addr; 632 int hrrq_id; 633 634 hrrq_id = ioarcb->cmd_pkt.hrrq_id; 635 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 636 ioarcb->cmd_pkt.hrrq_id = hrrq_id; 637 ioarcb->data_transfer_length = 0; 638 ioarcb->read_data_transfer_length = 0; 639 ioarcb->ioadl_len = 0; 640 ioarcb->read_ioadl_len = 0; 641 642 if (ipr_cmd->ioa_cfg->sis64) { 643 ioarcb->u.sis64_addr_data.data_ioadl_addr = 644 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 645 } else { 646 ioarcb->write_ioadl_addr = 647 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 648 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 649 } 650 651 ioasa->hdr.ioasc = 0; 652 ioasa->hdr.residual_data_len = 0; 653 ipr_cmd->scsi_cmd = NULL; 654 ipr_cmd->sense_buffer[0] = 0; 655 ipr_cmd->dma_use_sg = 0; 656 } 657 658 /** 659 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block 660 * @ipr_cmd: ipr command struct 661 * @fast_done: fast done function call-back 662 * 663 * Return value: 664 * none 665 **/ 666 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd, 667 void (*fast_done) (struct ipr_cmnd *)) 668 { 669 ipr_reinit_ipr_cmnd(ipr_cmd); 670 ipr_cmd->u.scratch = 0; 671 ipr_cmd->sibling = NULL; 672 ipr_cmd->eh_comp = NULL; 673 ipr_cmd->fast_done = fast_done; 674 timer_setup(&ipr_cmd->timer, NULL, 0); 675 } 676 677 /** 678 * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block 679 * @hrrq: hrr queue 680 * 681 * Return value: 682 * pointer to ipr command struct 683 **/ 684 static 685 struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue *hrrq) 686 { 687 struct ipr_cmnd *ipr_cmd = NULL; 688 689 if (likely(!list_empty(&hrrq->hrrq_free_q))) { 690 ipr_cmd = list_entry(hrrq->hrrq_free_q.next, 691 struct ipr_cmnd, queue); 692 list_del(&ipr_cmd->queue); 693 } 694 695 696 return ipr_cmd; 697 } 698 699 /** 700 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it 701 * @ioa_cfg: ioa config struct 702 * 703 * Return value: 704 * pointer to ipr command struct 705 **/ 706 static 707 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) 708 { 709 struct ipr_cmnd *ipr_cmd = 710 __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]); 711 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done); 712 return ipr_cmd; 713 } 714 715 /** 716 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts 717 * @ioa_cfg: ioa config struct 718 * @clr_ints: interrupts to clear 719 * 720 * This function masks all interrupts on the adapter, then clears the 721 * interrupts specified in the mask 722 * 723 * Return value: 724 * none 725 **/ 726 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, 727 u32 clr_ints) 728 { 729 int i; 730 731 /* Stop new interrupts */ 732 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 733 spin_lock(&ioa_cfg->hrrq[i]._lock); 734 ioa_cfg->hrrq[i].allow_interrupts = 0; 735 spin_unlock(&ioa_cfg->hrrq[i]._lock); 736 } 737 738 /* Set interrupt mask to stop all new interrupts */ 739 if (ioa_cfg->sis64) 740 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg); 741 else 742 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); 743 744 /* Clear any pending interrupts */ 745 if (ioa_cfg->sis64) 746 writel(~0, ioa_cfg->regs.clr_interrupt_reg); 747 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32); 748 readl(ioa_cfg->regs.sense_interrupt_reg); 749 } 750 751 /** 752 * ipr_save_pcix_cmd_reg - Save PCI-X command register 753 * @ioa_cfg: ioa config struct 754 * 755 * Return value: 756 * 0 on success / -EIO on failure 757 **/ 758 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 759 { 760 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 761 int rc; 762 763 if (pcix_cmd_reg == 0) 764 return 0; 765 766 rc = pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 767 &ioa_cfg->saved_pcix_cmd_reg); 768 if (rc != PCIBIOS_SUCCESSFUL) { 769 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 770 return -EIO; 771 } 772 773 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; 774 return 0; 775 } 776 777 /** 778 * ipr_set_pcix_cmd_reg - Setup PCI-X command register 779 * @ioa_cfg: ioa config struct 780 * 781 * Return value: 782 * 0 on success / -EIO on failure 783 **/ 784 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 785 { 786 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 787 int rc; 788 789 if (pcix_cmd_reg) { 790 rc = pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 791 ioa_cfg->saved_pcix_cmd_reg); 792 if (rc != PCIBIOS_SUCCESSFUL) { 793 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); 794 return -EIO; 795 } 796 } 797 798 return 0; 799 } 800 801 802 /** 803 * __ipr_scsi_eh_done - mid-layer done function for aborted ops 804 * @ipr_cmd: ipr command struct 805 * 806 * This function is invoked by the interrupt handler for 807 * ops generated by the SCSI mid-layer which are being aborted. 808 * 809 * Return value: 810 * none 811 **/ 812 static void __ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 813 { 814 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 815 816 scsi_cmd->result |= (DID_ERROR << 16); 817 818 scsi_dma_unmap(ipr_cmd->scsi_cmd); 819 scsi_done(scsi_cmd); 820 if (ipr_cmd->eh_comp) 821 complete(ipr_cmd->eh_comp); 822 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 823 } 824 825 /** 826 * ipr_scsi_eh_done - mid-layer done function for aborted ops 827 * @ipr_cmd: ipr command struct 828 * 829 * This function is invoked by the interrupt handler for 830 * ops generated by the SCSI mid-layer which are being aborted. 831 * 832 * Return value: 833 * none 834 **/ 835 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 836 { 837 unsigned long hrrq_flags; 838 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq; 839 840 spin_lock_irqsave(&hrrq->_lock, hrrq_flags); 841 __ipr_scsi_eh_done(ipr_cmd); 842 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags); 843 } 844 845 /** 846 * ipr_fail_all_ops - Fails all outstanding ops. 847 * @ioa_cfg: ioa config struct 848 * 849 * This function fails all outstanding ops. 850 * 851 * Return value: 852 * none 853 **/ 854 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) 855 { 856 struct ipr_cmnd *ipr_cmd, *temp; 857 struct ipr_hrr_queue *hrrq; 858 859 ENTER; 860 for_each_hrrq(hrrq, ioa_cfg) { 861 spin_lock(&hrrq->_lock); 862 list_for_each_entry_safe(ipr_cmd, 863 temp, &hrrq->hrrq_pending_q, queue) { 864 list_del(&ipr_cmd->queue); 865 866 ipr_cmd->s.ioasa.hdr.ioasc = 867 cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); 868 ipr_cmd->s.ioasa.hdr.ilid = 869 cpu_to_be32(IPR_DRIVER_ILID); 870 871 if (ipr_cmd->scsi_cmd) 872 ipr_cmd->done = __ipr_scsi_eh_done; 873 874 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, 875 IPR_IOASC_IOA_WAS_RESET); 876 timer_delete(&ipr_cmd->timer); 877 ipr_cmd->done(ipr_cmd); 878 } 879 spin_unlock(&hrrq->_lock); 880 } 881 LEAVE; 882 } 883 884 /** 885 * ipr_send_command - Send driver initiated requests. 886 * @ipr_cmd: ipr command struct 887 * 888 * This function sends a command to the adapter using the correct write call. 889 * In the case of sis64, calculate the ioarcb size required. Then or in the 890 * appropriate bits. 891 * 892 * Return value: 893 * none 894 **/ 895 static void ipr_send_command(struct ipr_cmnd *ipr_cmd) 896 { 897 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 898 dma_addr_t send_dma_addr = ipr_cmd->dma_addr; 899 900 if (ioa_cfg->sis64) { 901 /* The default size is 256 bytes */ 902 send_dma_addr |= 0x1; 903 904 /* If the number of ioadls * size of ioadl > 128 bytes, 905 then use a 512 byte ioarcb */ 906 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 ) 907 send_dma_addr |= 0x4; 908 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg); 909 } else 910 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg); 911 } 912 913 /** 914 * ipr_do_req - Send driver initiated requests. 915 * @ipr_cmd: ipr command struct 916 * @done: done function 917 * @timeout_func: timeout function 918 * @timeout: timeout value 919 * 920 * This function sends the specified command to the adapter with the 921 * timeout given. The done function is invoked on command completion. 922 * 923 * Return value: 924 * none 925 **/ 926 static void ipr_do_req(struct ipr_cmnd *ipr_cmd, 927 void (*done) (struct ipr_cmnd *), 928 void (*timeout_func) (struct timer_list *), u32 timeout) 929 { 930 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 931 932 ipr_cmd->done = done; 933 934 ipr_cmd->timer.expires = jiffies + timeout; 935 ipr_cmd->timer.function = timeout_func; 936 937 add_timer(&ipr_cmd->timer); 938 939 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); 940 941 ipr_send_command(ipr_cmd); 942 } 943 944 /** 945 * ipr_internal_cmd_done - Op done function for an internally generated op. 946 * @ipr_cmd: ipr command struct 947 * 948 * This function is the op done function for an internally generated, 949 * blocking op. It simply wakes the sleeping thread. 950 * 951 * Return value: 952 * none 953 **/ 954 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) 955 { 956 if (ipr_cmd->sibling) 957 ipr_cmd->sibling = NULL; 958 else 959 complete(&ipr_cmd->completion); 960 } 961 962 /** 963 * ipr_init_ioadl - initialize the ioadl for the correct SIS type 964 * @ipr_cmd: ipr command struct 965 * @dma_addr: dma address 966 * @len: transfer length 967 * @flags: ioadl flag value 968 * 969 * This function initializes an ioadl in the case where there is only a single 970 * descriptor. 971 * 972 * Return value: 973 * nothing 974 **/ 975 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr, 976 u32 len, int flags) 977 { 978 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 979 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 980 981 ipr_cmd->dma_use_sg = 1; 982 983 if (ipr_cmd->ioa_cfg->sis64) { 984 ioadl64->flags = cpu_to_be32(flags); 985 ioadl64->data_len = cpu_to_be32(len); 986 ioadl64->address = cpu_to_be64(dma_addr); 987 988 ipr_cmd->ioarcb.ioadl_len = 989 cpu_to_be32(sizeof(struct ipr_ioadl64_desc)); 990 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len); 991 } else { 992 ioadl->flags_and_data_len = cpu_to_be32(flags | len); 993 ioadl->address = cpu_to_be32(dma_addr); 994 995 if (flags == IPR_IOADL_FLAGS_READ_LAST) { 996 ipr_cmd->ioarcb.read_ioadl_len = 997 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 998 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len); 999 } else { 1000 ipr_cmd->ioarcb.ioadl_len = 1001 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 1002 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len); 1003 } 1004 } 1005 } 1006 1007 /** 1008 * ipr_send_blocking_cmd - Send command and sleep on its completion. 1009 * @ipr_cmd: ipr command struct 1010 * @timeout_func: function to invoke if command times out 1011 * @timeout: timeout 1012 * 1013 * Return value: 1014 * none 1015 **/ 1016 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, 1017 void (*timeout_func) (struct timer_list *), 1018 u32 timeout) 1019 { 1020 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1021 1022 init_completion(&ipr_cmd->completion); 1023 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); 1024 1025 spin_unlock_irq(ioa_cfg->host->host_lock); 1026 wait_for_completion(&ipr_cmd->completion); 1027 spin_lock_irq(ioa_cfg->host->host_lock); 1028 } 1029 1030 static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg) 1031 { 1032 unsigned int hrrq; 1033 1034 if (ioa_cfg->hrrq_num == 1) 1035 hrrq = 0; 1036 else { 1037 hrrq = atomic_add_return(1, &ioa_cfg->hrrq_index); 1038 hrrq = (hrrq % (ioa_cfg->hrrq_num - 1)) + 1; 1039 } 1040 return hrrq; 1041 } 1042 1043 /** 1044 * ipr_send_hcam - Send an HCAM to the adapter. 1045 * @ioa_cfg: ioa config struct 1046 * @type: HCAM type 1047 * @hostrcb: hostrcb struct 1048 * 1049 * This function will send a Host Controlled Async command to the adapter. 1050 * If HCAMs are currently not allowed to be issued to the adapter, it will 1051 * place the hostrcb on the free queue. 1052 * 1053 * Return value: 1054 * none 1055 **/ 1056 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, 1057 struct ipr_hostrcb *hostrcb) 1058 { 1059 struct ipr_cmnd *ipr_cmd; 1060 struct ipr_ioarcb *ioarcb; 1061 1062 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) { 1063 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 1064 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 1065 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); 1066 1067 ipr_cmd->u.hostrcb = hostrcb; 1068 ioarcb = &ipr_cmd->ioarcb; 1069 1070 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 1071 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; 1072 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; 1073 ioarcb->cmd_pkt.cdb[1] = type; 1074 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; 1075 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; 1076 1077 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma, 1078 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST); 1079 1080 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) 1081 ipr_cmd->done = ipr_process_ccn; 1082 else 1083 ipr_cmd->done = ipr_process_error; 1084 1085 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); 1086 1087 ipr_send_command(ipr_cmd); 1088 } else { 1089 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 1090 } 1091 } 1092 1093 /** 1094 * ipr_init_res_entry - Initialize a resource entry struct. 1095 * @res: resource entry struct 1096 * @cfgtew: config table entry wrapper struct 1097 * 1098 * Return value: 1099 * none 1100 **/ 1101 static void ipr_init_res_entry(struct ipr_resource_entry *res, 1102 struct ipr_config_table_entry_wrapper *cfgtew) 1103 { 1104 int found = 0; 1105 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg; 1106 struct ipr_resource_entry *gscsi_res = NULL; 1107 1108 res->needs_sync_complete = 0; 1109 res->in_erp = 0; 1110 res->add_to_ml = 0; 1111 res->del_from_ml = 0; 1112 res->resetting_device = 0; 1113 res->reset_occurred = 0; 1114 res->sdev = NULL; 1115 1116 if (ioa_cfg->sis64) { 1117 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags); 1118 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags); 1119 res->qmodel = IPR_QUEUEING_MODEL64(res); 1120 res->type = cfgtew->u.cfgte64->res_type; 1121 1122 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path, 1123 sizeof(res->res_path)); 1124 1125 res->bus = 0; 1126 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1127 sizeof(res->dev_lun.scsi_lun)); 1128 res->lun = scsilun_to_int(&res->dev_lun); 1129 1130 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) { 1131 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) { 1132 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) { 1133 found = 1; 1134 res->target = gscsi_res->target; 1135 break; 1136 } 1137 } 1138 if (!found) { 1139 res->target = find_first_zero_bit(ioa_cfg->target_ids, 1140 ioa_cfg->max_devs_supported); 1141 set_bit(res->target, ioa_cfg->target_ids); 1142 } 1143 } else if (res->type == IPR_RES_TYPE_IOAFP) { 1144 res->bus = IPR_IOAFP_VIRTUAL_BUS; 1145 res->target = 0; 1146 } else if (res->type == IPR_RES_TYPE_ARRAY) { 1147 res->bus = IPR_ARRAY_VIRTUAL_BUS; 1148 res->target = find_first_zero_bit(ioa_cfg->array_ids, 1149 ioa_cfg->max_devs_supported); 1150 set_bit(res->target, ioa_cfg->array_ids); 1151 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) { 1152 res->bus = IPR_VSET_VIRTUAL_BUS; 1153 res->target = find_first_zero_bit(ioa_cfg->vset_ids, 1154 ioa_cfg->max_devs_supported); 1155 set_bit(res->target, ioa_cfg->vset_ids); 1156 } else { 1157 res->target = find_first_zero_bit(ioa_cfg->target_ids, 1158 ioa_cfg->max_devs_supported); 1159 set_bit(res->target, ioa_cfg->target_ids); 1160 } 1161 } else { 1162 res->qmodel = IPR_QUEUEING_MODEL(res); 1163 res->flags = cfgtew->u.cfgte->flags; 1164 if (res->flags & IPR_IS_IOA_RESOURCE) 1165 res->type = IPR_RES_TYPE_IOAFP; 1166 else 1167 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f; 1168 1169 res->bus = cfgtew->u.cfgte->res_addr.bus; 1170 res->target = cfgtew->u.cfgte->res_addr.target; 1171 res->lun = cfgtew->u.cfgte->res_addr.lun; 1172 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn); 1173 } 1174 } 1175 1176 /** 1177 * ipr_is_same_device - Determine if two devices are the same. 1178 * @res: resource entry struct 1179 * @cfgtew: config table entry wrapper struct 1180 * 1181 * Return value: 1182 * 1 if the devices are the same / 0 otherwise 1183 **/ 1184 static int ipr_is_same_device(struct ipr_resource_entry *res, 1185 struct ipr_config_table_entry_wrapper *cfgtew) 1186 { 1187 if (res->ioa_cfg->sis64) { 1188 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id, 1189 sizeof(cfgtew->u.cfgte64->dev_id)) && 1190 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1191 sizeof(cfgtew->u.cfgte64->lun))) { 1192 return 1; 1193 } 1194 } else { 1195 if (res->bus == cfgtew->u.cfgte->res_addr.bus && 1196 res->target == cfgtew->u.cfgte->res_addr.target && 1197 res->lun == cfgtew->u.cfgte->res_addr.lun) 1198 return 1; 1199 } 1200 1201 return 0; 1202 } 1203 1204 /** 1205 * __ipr_format_res_path - Format the resource path for printing. 1206 * @res_path: resource path 1207 * @buffer: buffer 1208 * @len: length of buffer provided 1209 * 1210 * Return value: 1211 * pointer to buffer 1212 **/ 1213 static char *__ipr_format_res_path(u8 *res_path, char *buffer, int len) 1214 { 1215 int i; 1216 char *p = buffer; 1217 1218 *p = '\0'; 1219 p += scnprintf(p, buffer + len - p, "%02X", res_path[0]); 1220 for (i = 1; res_path[i] != 0xff && i < IPR_RES_PATH_BYTES; i++) 1221 p += scnprintf(p, buffer + len - p, "-%02X", res_path[i]); 1222 1223 return buffer; 1224 } 1225 1226 /** 1227 * ipr_format_res_path - Format the resource path for printing. 1228 * @ioa_cfg: ioa config struct 1229 * @res_path: resource path 1230 * @buffer: buffer 1231 * @len: length of buffer provided 1232 * 1233 * Return value: 1234 * pointer to buffer 1235 **/ 1236 static char *ipr_format_res_path(struct ipr_ioa_cfg *ioa_cfg, 1237 u8 *res_path, char *buffer, int len) 1238 { 1239 char *p = buffer; 1240 1241 *p = '\0'; 1242 p += scnprintf(p, buffer + len - p, "%d/", ioa_cfg->host->host_no); 1243 __ipr_format_res_path(res_path, p, len - (p - buffer)); 1244 return buffer; 1245 } 1246 1247 /** 1248 * ipr_update_res_entry - Update the resource entry. 1249 * @res: resource entry struct 1250 * @cfgtew: config table entry wrapper struct 1251 * 1252 * Return value: 1253 * none 1254 **/ 1255 static void ipr_update_res_entry(struct ipr_resource_entry *res, 1256 struct ipr_config_table_entry_wrapper *cfgtew) 1257 { 1258 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1259 int new_path = 0; 1260 1261 if (res->ioa_cfg->sis64) { 1262 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags); 1263 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags); 1264 res->type = cfgtew->u.cfgte64->res_type; 1265 1266 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data, 1267 sizeof(struct ipr_std_inq_data)); 1268 1269 res->qmodel = IPR_QUEUEING_MODEL64(res); 1270 res->res_handle = cfgtew->u.cfgte64->res_handle; 1271 res->dev_id = cfgtew->u.cfgte64->dev_id; 1272 1273 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1274 sizeof(res->dev_lun.scsi_lun)); 1275 1276 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path, 1277 sizeof(res->res_path))) { 1278 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path, 1279 sizeof(res->res_path)); 1280 new_path = 1; 1281 } 1282 1283 if (res->sdev && new_path) 1284 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n", 1285 ipr_format_res_path(res->ioa_cfg, 1286 res->res_path, buffer, sizeof(buffer))); 1287 } else { 1288 res->flags = cfgtew->u.cfgte->flags; 1289 if (res->flags & IPR_IS_IOA_RESOURCE) 1290 res->type = IPR_RES_TYPE_IOAFP; 1291 else 1292 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f; 1293 1294 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data, 1295 sizeof(struct ipr_std_inq_data)); 1296 1297 res->qmodel = IPR_QUEUEING_MODEL(res); 1298 res->res_handle = cfgtew->u.cfgte->res_handle; 1299 } 1300 } 1301 1302 /** 1303 * ipr_clear_res_target - Clear the bit in the bit map representing the target 1304 * for the resource. 1305 * @res: resource entry struct 1306 * 1307 * Return value: 1308 * none 1309 **/ 1310 static void ipr_clear_res_target(struct ipr_resource_entry *res) 1311 { 1312 struct ipr_resource_entry *gscsi_res = NULL; 1313 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg; 1314 1315 if (!ioa_cfg->sis64) 1316 return; 1317 1318 if (res->bus == IPR_ARRAY_VIRTUAL_BUS) 1319 clear_bit(res->target, ioa_cfg->array_ids); 1320 else if (res->bus == IPR_VSET_VIRTUAL_BUS) 1321 clear_bit(res->target, ioa_cfg->vset_ids); 1322 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) { 1323 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) 1324 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res) 1325 return; 1326 clear_bit(res->target, ioa_cfg->target_ids); 1327 1328 } else if (res->bus == 0) 1329 clear_bit(res->target, ioa_cfg->target_ids); 1330 } 1331 1332 /** 1333 * ipr_handle_config_change - Handle a config change from the adapter 1334 * @ioa_cfg: ioa config struct 1335 * @hostrcb: hostrcb 1336 * 1337 * Return value: 1338 * none 1339 **/ 1340 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, 1341 struct ipr_hostrcb *hostrcb) 1342 { 1343 struct ipr_resource_entry *res = NULL; 1344 struct ipr_config_table_entry_wrapper cfgtew; 1345 __be32 cc_res_handle; 1346 1347 u32 is_ndn = 1; 1348 1349 if (ioa_cfg->sis64) { 1350 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64; 1351 cc_res_handle = cfgtew.u.cfgte64->res_handle; 1352 } else { 1353 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte; 1354 cc_res_handle = cfgtew.u.cfgte->res_handle; 1355 } 1356 1357 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1358 if (res->res_handle == cc_res_handle) { 1359 is_ndn = 0; 1360 break; 1361 } 1362 } 1363 1364 if (is_ndn) { 1365 if (list_empty(&ioa_cfg->free_res_q)) { 1366 ipr_send_hcam(ioa_cfg, 1367 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 1368 hostrcb); 1369 return; 1370 } 1371 1372 res = list_entry(ioa_cfg->free_res_q.next, 1373 struct ipr_resource_entry, queue); 1374 1375 list_del(&res->queue); 1376 ipr_init_res_entry(res, &cfgtew); 1377 list_add_tail(&res->queue, &ioa_cfg->used_res_q); 1378 } 1379 1380 ipr_update_res_entry(res, &cfgtew); 1381 1382 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { 1383 if (res->sdev) { 1384 res->del_from_ml = 1; 1385 res->res_handle = IPR_INVALID_RES_HANDLE; 1386 schedule_work(&ioa_cfg->work_q); 1387 } else { 1388 ipr_clear_res_target(res); 1389 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 1390 } 1391 } else if (!res->sdev || res->del_from_ml) { 1392 res->add_to_ml = 1; 1393 schedule_work(&ioa_cfg->work_q); 1394 } 1395 1396 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 1397 } 1398 1399 /** 1400 * ipr_process_ccn - Op done function for a CCN. 1401 * @ipr_cmd: ipr command struct 1402 * 1403 * This function is the op done function for a configuration 1404 * change notification host controlled async from the adapter. 1405 * 1406 * Return value: 1407 * none 1408 **/ 1409 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) 1410 { 1411 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1412 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 1413 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 1414 1415 list_del_init(&hostrcb->queue); 1416 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 1417 1418 if (ioasc) { 1419 if (ioasc != IPR_IOASC_IOA_WAS_RESET && 1420 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) 1421 dev_err(&ioa_cfg->pdev->dev, 1422 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 1423 1424 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 1425 } else { 1426 ipr_handle_config_change(ioa_cfg, hostrcb); 1427 } 1428 } 1429 1430 /** 1431 * strip_whitespace - Strip and pad trailing whitespace. 1432 * @i: size of buffer 1433 * @buf: string to modify 1434 * 1435 * This function will strip all trailing whitespace and 1436 * NUL terminate the string. 1437 * 1438 **/ 1439 static void strip_whitespace(int i, char *buf) 1440 { 1441 if (i < 1) 1442 return; 1443 i--; 1444 while (i && buf[i] == ' ') 1445 i--; 1446 buf[i+1] = '\0'; 1447 } 1448 1449 /** 1450 * ipr_log_vpd_compact - Log the passed extended VPD compactly. 1451 * @prefix: string to print at start of printk 1452 * @hostrcb: hostrcb pointer 1453 * @vpd: vendor/product id/sn struct 1454 * 1455 * Return value: 1456 * none 1457 **/ 1458 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 1459 struct ipr_vpd *vpd) 1460 { 1461 char vendor_id[IPR_VENDOR_ID_LEN + 1]; 1462 char product_id[IPR_PROD_ID_LEN + 1]; 1463 char sn[IPR_SERIAL_NUM_LEN + 1]; 1464 1465 memcpy(vendor_id, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 1466 strip_whitespace(IPR_VENDOR_ID_LEN, vendor_id); 1467 1468 memcpy(product_id, vpd->vpids.product_id, IPR_PROD_ID_LEN); 1469 strip_whitespace(IPR_PROD_ID_LEN, product_id); 1470 1471 memcpy(sn, vpd->sn, IPR_SERIAL_NUM_LEN); 1472 strip_whitespace(IPR_SERIAL_NUM_LEN, sn); 1473 1474 ipr_hcam_err(hostrcb, "%s VPID/SN: %s %s %s\n", prefix, 1475 vendor_id, product_id, sn); 1476 } 1477 1478 /** 1479 * ipr_log_vpd - Log the passed VPD to the error log. 1480 * @vpd: vendor/product id/sn struct 1481 * 1482 * Return value: 1483 * none 1484 **/ 1485 static void ipr_log_vpd(struct ipr_vpd *vpd) 1486 { 1487 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN 1488 + IPR_SERIAL_NUM_LEN]; 1489 1490 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 1491 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id, 1492 IPR_PROD_ID_LEN); 1493 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; 1494 ipr_err("Vendor/Product ID: %s\n", buffer); 1495 1496 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN); 1497 buffer[IPR_SERIAL_NUM_LEN] = '\0'; 1498 ipr_err(" Serial Number: %s\n", buffer); 1499 } 1500 1501 /** 1502 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly. 1503 * @prefix: string to print at start of printk 1504 * @hostrcb: hostrcb pointer 1505 * @vpd: vendor/product id/sn/wwn struct 1506 * 1507 * Return value: 1508 * none 1509 **/ 1510 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 1511 struct ipr_ext_vpd *vpd) 1512 { 1513 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd); 1514 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix, 1515 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1])); 1516 } 1517 1518 /** 1519 * ipr_log_ext_vpd - Log the passed extended VPD to the error log. 1520 * @vpd: vendor/product id/sn/wwn struct 1521 * 1522 * Return value: 1523 * none 1524 **/ 1525 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd) 1526 { 1527 ipr_log_vpd(&vpd->vpd); 1528 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]), 1529 be32_to_cpu(vpd->wwid[1])); 1530 } 1531 1532 /** 1533 * ipr_log_enhanced_cache_error - Log a cache error. 1534 * @ioa_cfg: ioa config struct 1535 * @hostrcb: hostrcb struct 1536 * 1537 * Return value: 1538 * none 1539 **/ 1540 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1541 struct ipr_hostrcb *hostrcb) 1542 { 1543 struct ipr_hostrcb_type_12_error *error; 1544 1545 if (ioa_cfg->sis64) 1546 error = &hostrcb->hcam.u.error64.u.type_12_error; 1547 else 1548 error = &hostrcb->hcam.u.error.u.type_12_error; 1549 1550 ipr_err("-----Current Configuration-----\n"); 1551 ipr_err("Cache Directory Card Information:\n"); 1552 ipr_log_ext_vpd(&error->ioa_vpd); 1553 ipr_err("Adapter Card Information:\n"); 1554 ipr_log_ext_vpd(&error->cfc_vpd); 1555 1556 ipr_err("-----Expected Configuration-----\n"); 1557 ipr_err("Cache Directory Card Information:\n"); 1558 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd); 1559 ipr_err("Adapter Card Information:\n"); 1560 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd); 1561 1562 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1563 be32_to_cpu(error->ioa_data[0]), 1564 be32_to_cpu(error->ioa_data[1]), 1565 be32_to_cpu(error->ioa_data[2])); 1566 } 1567 1568 /** 1569 * ipr_log_cache_error - Log a cache error. 1570 * @ioa_cfg: ioa config struct 1571 * @hostrcb: hostrcb struct 1572 * 1573 * Return value: 1574 * none 1575 **/ 1576 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1577 struct ipr_hostrcb *hostrcb) 1578 { 1579 struct ipr_hostrcb_type_02_error *error = 1580 &hostrcb->hcam.u.error.u.type_02_error; 1581 1582 ipr_err("-----Current Configuration-----\n"); 1583 ipr_err("Cache Directory Card Information:\n"); 1584 ipr_log_vpd(&error->ioa_vpd); 1585 ipr_err("Adapter Card Information:\n"); 1586 ipr_log_vpd(&error->cfc_vpd); 1587 1588 ipr_err("-----Expected Configuration-----\n"); 1589 ipr_err("Cache Directory Card Information:\n"); 1590 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd); 1591 ipr_err("Adapter Card Information:\n"); 1592 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd); 1593 1594 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1595 be32_to_cpu(error->ioa_data[0]), 1596 be32_to_cpu(error->ioa_data[1]), 1597 be32_to_cpu(error->ioa_data[2])); 1598 } 1599 1600 /** 1601 * ipr_log_enhanced_config_error - Log a configuration error. 1602 * @ioa_cfg: ioa config struct 1603 * @hostrcb: hostrcb struct 1604 * 1605 * Return value: 1606 * none 1607 **/ 1608 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg, 1609 struct ipr_hostrcb *hostrcb) 1610 { 1611 int errors_logged, i; 1612 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry; 1613 struct ipr_hostrcb_type_13_error *error; 1614 1615 error = &hostrcb->hcam.u.error.u.type_13_error; 1616 errors_logged = be32_to_cpu(error->errors_logged); 1617 1618 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1619 be32_to_cpu(error->errors_detected), errors_logged); 1620 1621 dev_entry = error->dev; 1622 1623 for (i = 0; i < errors_logged; i++, dev_entry++) { 1624 ipr_err_separator; 1625 1626 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1627 ipr_log_ext_vpd(&dev_entry->vpd); 1628 1629 ipr_err("-----New Device Information-----\n"); 1630 ipr_log_ext_vpd(&dev_entry->new_vpd); 1631 1632 ipr_err("Cache Directory Card Information:\n"); 1633 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1634 1635 ipr_err("Adapter Card Information:\n"); 1636 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1637 } 1638 } 1639 1640 /** 1641 * ipr_log_sis64_config_error - Log a device error. 1642 * @ioa_cfg: ioa config struct 1643 * @hostrcb: hostrcb struct 1644 * 1645 * Return value: 1646 * none 1647 **/ 1648 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg, 1649 struct ipr_hostrcb *hostrcb) 1650 { 1651 int errors_logged, i; 1652 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry; 1653 struct ipr_hostrcb_type_23_error *error; 1654 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1655 1656 error = &hostrcb->hcam.u.error64.u.type_23_error; 1657 errors_logged = be32_to_cpu(error->errors_logged); 1658 1659 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1660 be32_to_cpu(error->errors_detected), errors_logged); 1661 1662 dev_entry = error->dev; 1663 1664 for (i = 0; i < errors_logged; i++, dev_entry++) { 1665 ipr_err_separator; 1666 1667 ipr_err("Device %d : %s", i + 1, 1668 __ipr_format_res_path(dev_entry->res_path, 1669 buffer, sizeof(buffer))); 1670 ipr_log_ext_vpd(&dev_entry->vpd); 1671 1672 ipr_err("-----New Device Information-----\n"); 1673 ipr_log_ext_vpd(&dev_entry->new_vpd); 1674 1675 ipr_err("Cache Directory Card Information:\n"); 1676 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1677 1678 ipr_err("Adapter Card Information:\n"); 1679 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1680 } 1681 } 1682 1683 /** 1684 * ipr_log_config_error - Log a configuration error. 1685 * @ioa_cfg: ioa config struct 1686 * @hostrcb: hostrcb struct 1687 * 1688 * Return value: 1689 * none 1690 **/ 1691 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, 1692 struct ipr_hostrcb *hostrcb) 1693 { 1694 int errors_logged, i; 1695 struct ipr_hostrcb_device_data_entry *dev_entry; 1696 struct ipr_hostrcb_type_03_error *error; 1697 1698 error = &hostrcb->hcam.u.error.u.type_03_error; 1699 errors_logged = be32_to_cpu(error->errors_logged); 1700 1701 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1702 be32_to_cpu(error->errors_detected), errors_logged); 1703 1704 dev_entry = error->dev; 1705 1706 for (i = 0; i < errors_logged; i++, dev_entry++) { 1707 ipr_err_separator; 1708 1709 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1710 ipr_log_vpd(&dev_entry->vpd); 1711 1712 ipr_err("-----New Device Information-----\n"); 1713 ipr_log_vpd(&dev_entry->new_vpd); 1714 1715 ipr_err("Cache Directory Card Information:\n"); 1716 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd); 1717 1718 ipr_err("Adapter Card Information:\n"); 1719 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd); 1720 1721 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", 1722 be32_to_cpu(dev_entry->ioa_data[0]), 1723 be32_to_cpu(dev_entry->ioa_data[1]), 1724 be32_to_cpu(dev_entry->ioa_data[2]), 1725 be32_to_cpu(dev_entry->ioa_data[3]), 1726 be32_to_cpu(dev_entry->ioa_data[4])); 1727 } 1728 } 1729 1730 /** 1731 * ipr_log_enhanced_array_error - Log an array configuration error. 1732 * @ioa_cfg: ioa config struct 1733 * @hostrcb: hostrcb struct 1734 * 1735 * Return value: 1736 * none 1737 **/ 1738 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg, 1739 struct ipr_hostrcb *hostrcb) 1740 { 1741 int i, num_entries; 1742 struct ipr_hostrcb_type_14_error *error; 1743 struct ipr_hostrcb_array_data_entry_enhanced *array_entry; 1744 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1745 1746 error = &hostrcb->hcam.u.error.u.type_14_error; 1747 1748 ipr_err_separator; 1749 1750 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1751 error->protection_level, 1752 ioa_cfg->host->host_no, 1753 error->last_func_vset_res_addr.bus, 1754 error->last_func_vset_res_addr.target, 1755 error->last_func_vset_res_addr.lun); 1756 1757 ipr_err_separator; 1758 1759 array_entry = error->array_member; 1760 num_entries = min_t(u32, be32_to_cpu(error->num_entries), 1761 ARRAY_SIZE(error->array_member)); 1762 1763 for (i = 0; i < num_entries; i++, array_entry++) { 1764 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1765 continue; 1766 1767 if (be32_to_cpu(error->exposed_mode_adn) == i) 1768 ipr_err("Exposed Array Member %d:\n", i); 1769 else 1770 ipr_err("Array Member %d:\n", i); 1771 1772 ipr_log_ext_vpd(&array_entry->vpd); 1773 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1774 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1775 "Expected Location"); 1776 1777 ipr_err_separator; 1778 } 1779 } 1780 1781 /** 1782 * ipr_log_array_error - Log an array configuration error. 1783 * @ioa_cfg: ioa config struct 1784 * @hostrcb: hostrcb struct 1785 * 1786 * Return value: 1787 * none 1788 **/ 1789 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, 1790 struct ipr_hostrcb *hostrcb) 1791 { 1792 int i; 1793 struct ipr_hostrcb_type_04_error *error; 1794 struct ipr_hostrcb_array_data_entry *array_entry; 1795 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1796 1797 error = &hostrcb->hcam.u.error.u.type_04_error; 1798 1799 ipr_err_separator; 1800 1801 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1802 error->protection_level, 1803 ioa_cfg->host->host_no, 1804 error->last_func_vset_res_addr.bus, 1805 error->last_func_vset_res_addr.target, 1806 error->last_func_vset_res_addr.lun); 1807 1808 ipr_err_separator; 1809 1810 array_entry = error->array_member; 1811 1812 for (i = 0; i < 18; i++) { 1813 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1814 continue; 1815 1816 if (be32_to_cpu(error->exposed_mode_adn) == i) 1817 ipr_err("Exposed Array Member %d:\n", i); 1818 else 1819 ipr_err("Array Member %d:\n", i); 1820 1821 ipr_log_vpd(&array_entry->vpd); 1822 1823 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1824 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1825 "Expected Location"); 1826 1827 ipr_err_separator; 1828 1829 if (i == 9) 1830 array_entry = error->array_member2; 1831 else 1832 array_entry++; 1833 } 1834 } 1835 1836 /** 1837 * ipr_log_hex_data - Log additional hex IOA error data. 1838 * @ioa_cfg: ioa config struct 1839 * @data: IOA error data 1840 * @len: data length 1841 * 1842 * Return value: 1843 * none 1844 **/ 1845 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, __be32 *data, int len) 1846 { 1847 int i; 1848 1849 if (len == 0) 1850 return; 1851 1852 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 1853 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP); 1854 1855 for (i = 0; i < len / 4; i += 4) { 1856 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 1857 be32_to_cpu(data[i]), 1858 be32_to_cpu(data[i+1]), 1859 be32_to_cpu(data[i+2]), 1860 be32_to_cpu(data[i+3])); 1861 } 1862 } 1863 1864 /** 1865 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error. 1866 * @ioa_cfg: ioa config struct 1867 * @hostrcb: hostrcb struct 1868 * 1869 * Return value: 1870 * none 1871 **/ 1872 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1873 struct ipr_hostrcb *hostrcb) 1874 { 1875 struct ipr_hostrcb_type_17_error *error; 1876 1877 if (ioa_cfg->sis64) 1878 error = &hostrcb->hcam.u.error64.u.type_17_error; 1879 else 1880 error = &hostrcb->hcam.u.error.u.type_17_error; 1881 1882 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1883 strim(error->failure_reason); 1884 1885 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 1886 be32_to_cpu(hostrcb->hcam.u.error.prc)); 1887 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd); 1888 ipr_log_hex_data(ioa_cfg, error->data, 1889 be32_to_cpu(hostrcb->hcam.length) - 1890 (offsetof(struct ipr_hostrcb_error, u) + 1891 offsetof(struct ipr_hostrcb_type_17_error, data))); 1892 } 1893 1894 /** 1895 * ipr_log_dual_ioa_error - Log a dual adapter error. 1896 * @ioa_cfg: ioa config struct 1897 * @hostrcb: hostrcb struct 1898 * 1899 * Return value: 1900 * none 1901 **/ 1902 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1903 struct ipr_hostrcb *hostrcb) 1904 { 1905 struct ipr_hostrcb_type_07_error *error; 1906 1907 error = &hostrcb->hcam.u.error.u.type_07_error; 1908 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1909 strim(error->failure_reason); 1910 1911 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 1912 be32_to_cpu(hostrcb->hcam.u.error.prc)); 1913 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd); 1914 ipr_log_hex_data(ioa_cfg, error->data, 1915 be32_to_cpu(hostrcb->hcam.length) - 1916 (offsetof(struct ipr_hostrcb_error, u) + 1917 offsetof(struct ipr_hostrcb_type_07_error, data))); 1918 } 1919 1920 static const struct { 1921 u8 active; 1922 char *desc; 1923 } path_active_desc[] = { 1924 { IPR_PATH_NO_INFO, "Path" }, 1925 { IPR_PATH_ACTIVE, "Active path" }, 1926 { IPR_PATH_NOT_ACTIVE, "Inactive path" } 1927 }; 1928 1929 static const struct { 1930 u8 state; 1931 char *desc; 1932 } path_state_desc[] = { 1933 { IPR_PATH_STATE_NO_INFO, "has no path state information available" }, 1934 { IPR_PATH_HEALTHY, "is healthy" }, 1935 { IPR_PATH_DEGRADED, "is degraded" }, 1936 { IPR_PATH_FAILED, "is failed" } 1937 }; 1938 1939 /** 1940 * ipr_log_fabric_path - Log a fabric path error 1941 * @hostrcb: hostrcb struct 1942 * @fabric: fabric descriptor 1943 * 1944 * Return value: 1945 * none 1946 **/ 1947 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb, 1948 struct ipr_hostrcb_fabric_desc *fabric) 1949 { 1950 int i, j; 1951 u8 path_state = fabric->path_state; 1952 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 1953 u8 state = path_state & IPR_PATH_STATE_MASK; 1954 1955 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 1956 if (path_active_desc[i].active != active) 1957 continue; 1958 1959 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 1960 if (path_state_desc[j].state != state) 1961 continue; 1962 1963 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) { 1964 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n", 1965 path_active_desc[i].desc, path_state_desc[j].desc, 1966 fabric->ioa_port); 1967 } else if (fabric->cascaded_expander == 0xff) { 1968 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n", 1969 path_active_desc[i].desc, path_state_desc[j].desc, 1970 fabric->ioa_port, fabric->phy); 1971 } else if (fabric->phy == 0xff) { 1972 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n", 1973 path_active_desc[i].desc, path_state_desc[j].desc, 1974 fabric->ioa_port, fabric->cascaded_expander); 1975 } else { 1976 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n", 1977 path_active_desc[i].desc, path_state_desc[j].desc, 1978 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1979 } 1980 return; 1981 } 1982 } 1983 1984 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state, 1985 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1986 } 1987 1988 /** 1989 * ipr_log64_fabric_path - Log a fabric path error 1990 * @hostrcb: hostrcb struct 1991 * @fabric: fabric descriptor 1992 * 1993 * Return value: 1994 * none 1995 **/ 1996 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb, 1997 struct ipr_hostrcb64_fabric_desc *fabric) 1998 { 1999 int i, j; 2000 u8 path_state = fabric->path_state; 2001 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 2002 u8 state = path_state & IPR_PATH_STATE_MASK; 2003 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2004 2005 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 2006 if (path_active_desc[i].active != active) 2007 continue; 2008 2009 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 2010 if (path_state_desc[j].state != state) 2011 continue; 2012 2013 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n", 2014 path_active_desc[i].desc, path_state_desc[j].desc, 2015 ipr_format_res_path(hostrcb->ioa_cfg, 2016 fabric->res_path, 2017 buffer, sizeof(buffer))); 2018 return; 2019 } 2020 } 2021 2022 ipr_err("Path state=%02X Resource Path=%s\n", path_state, 2023 ipr_format_res_path(hostrcb->ioa_cfg, fabric->res_path, 2024 buffer, sizeof(buffer))); 2025 } 2026 2027 static const struct { 2028 u8 type; 2029 char *desc; 2030 } path_type_desc[] = { 2031 { IPR_PATH_CFG_IOA_PORT, "IOA port" }, 2032 { IPR_PATH_CFG_EXP_PORT, "Expander port" }, 2033 { IPR_PATH_CFG_DEVICE_PORT, "Device port" }, 2034 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" } 2035 }; 2036 2037 static const struct { 2038 u8 status; 2039 char *desc; 2040 } path_status_desc[] = { 2041 { IPR_PATH_CFG_NO_PROB, "Functional" }, 2042 { IPR_PATH_CFG_DEGRADED, "Degraded" }, 2043 { IPR_PATH_CFG_FAILED, "Failed" }, 2044 { IPR_PATH_CFG_SUSPECT, "Suspect" }, 2045 { IPR_PATH_NOT_DETECTED, "Missing" }, 2046 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" } 2047 }; 2048 2049 static const char *link_rate[] = { 2050 "unknown", 2051 "disabled", 2052 "phy reset problem", 2053 "spinup hold", 2054 "port selector", 2055 "unknown", 2056 "unknown", 2057 "unknown", 2058 "1.5Gbps", 2059 "3.0Gbps", 2060 "unknown", 2061 "unknown", 2062 "unknown", 2063 "unknown", 2064 "unknown", 2065 "unknown" 2066 }; 2067 2068 /** 2069 * ipr_log_path_elem - Log a fabric path element. 2070 * @hostrcb: hostrcb struct 2071 * @cfg: fabric path element struct 2072 * 2073 * Return value: 2074 * none 2075 **/ 2076 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb, 2077 struct ipr_hostrcb_config_element *cfg) 2078 { 2079 int i, j; 2080 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 2081 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 2082 2083 if (type == IPR_PATH_CFG_NOT_EXIST) 2084 return; 2085 2086 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 2087 if (path_type_desc[i].type != type) 2088 continue; 2089 2090 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 2091 if (path_status_desc[j].status != status) 2092 continue; 2093 2094 if (type == IPR_PATH_CFG_IOA_PORT) { 2095 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n", 2096 path_status_desc[j].desc, path_type_desc[i].desc, 2097 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2098 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2099 } else { 2100 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) { 2101 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n", 2102 path_status_desc[j].desc, path_type_desc[i].desc, 2103 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2104 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2105 } else if (cfg->cascaded_expander == 0xff) { 2106 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, " 2107 "WWN=%08X%08X\n", path_status_desc[j].desc, 2108 path_type_desc[i].desc, cfg->phy, 2109 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2110 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2111 } else if (cfg->phy == 0xff) { 2112 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, " 2113 "WWN=%08X%08X\n", path_status_desc[j].desc, 2114 path_type_desc[i].desc, cfg->cascaded_expander, 2115 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2116 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2117 } else { 2118 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s " 2119 "WWN=%08X%08X\n", path_status_desc[j].desc, 2120 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy, 2121 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2122 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2123 } 2124 } 2125 return; 2126 } 2127 } 2128 2129 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s " 2130 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy, 2131 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2132 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2133 } 2134 2135 /** 2136 * ipr_log64_path_elem - Log a fabric path element. 2137 * @hostrcb: hostrcb struct 2138 * @cfg: fabric path element struct 2139 * 2140 * Return value: 2141 * none 2142 **/ 2143 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb, 2144 struct ipr_hostrcb64_config_element *cfg) 2145 { 2146 int i, j; 2147 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK; 2148 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 2149 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 2150 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2151 2152 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64) 2153 return; 2154 2155 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 2156 if (path_type_desc[i].type != type) 2157 continue; 2158 2159 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 2160 if (path_status_desc[j].status != status) 2161 continue; 2162 2163 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n", 2164 path_status_desc[j].desc, path_type_desc[i].desc, 2165 ipr_format_res_path(hostrcb->ioa_cfg, 2166 cfg->res_path, buffer, sizeof(buffer)), 2167 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2168 be32_to_cpu(cfg->wwid[0]), 2169 be32_to_cpu(cfg->wwid[1])); 2170 return; 2171 } 2172 } 2173 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s " 2174 "WWN=%08X%08X\n", cfg->type_status, 2175 ipr_format_res_path(hostrcb->ioa_cfg, 2176 cfg->res_path, buffer, sizeof(buffer)), 2177 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2178 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2179 } 2180 2181 /** 2182 * ipr_log_fabric_error - Log a fabric error. 2183 * @ioa_cfg: ioa config struct 2184 * @hostrcb: hostrcb struct 2185 * 2186 * Return value: 2187 * none 2188 **/ 2189 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 2190 struct ipr_hostrcb *hostrcb) 2191 { 2192 struct ipr_hostrcb_type_20_error *error; 2193 struct ipr_hostrcb_fabric_desc *fabric; 2194 struct ipr_hostrcb_config_element *cfg; 2195 int i, add_len; 2196 2197 error = &hostrcb->hcam.u.error.u.type_20_error; 2198 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2199 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 2200 2201 add_len = be32_to_cpu(hostrcb->hcam.length) - 2202 (offsetof(struct ipr_hostrcb_error, u) + 2203 offsetof(struct ipr_hostrcb_type_20_error, desc)); 2204 2205 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 2206 ipr_log_fabric_path(hostrcb, fabric); 2207 for_each_fabric_cfg(fabric, cfg) 2208 ipr_log_path_elem(hostrcb, cfg); 2209 2210 add_len -= be16_to_cpu(fabric->length); 2211 fabric = (struct ipr_hostrcb_fabric_desc *) 2212 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 2213 } 2214 2215 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len); 2216 } 2217 2218 /** 2219 * ipr_log_sis64_array_error - Log a sis64 array error. 2220 * @ioa_cfg: ioa config struct 2221 * @hostrcb: hostrcb struct 2222 * 2223 * Return value: 2224 * none 2225 **/ 2226 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg, 2227 struct ipr_hostrcb *hostrcb) 2228 { 2229 int i, num_entries; 2230 struct ipr_hostrcb_type_24_error *error; 2231 struct ipr_hostrcb64_array_data_entry *array_entry; 2232 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2233 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 2234 2235 error = &hostrcb->hcam.u.error64.u.type_24_error; 2236 2237 ipr_err_separator; 2238 2239 ipr_err("RAID %s Array Configuration: %s\n", 2240 error->protection_level, 2241 ipr_format_res_path(ioa_cfg, error->last_res_path, 2242 buffer, sizeof(buffer))); 2243 2244 ipr_err_separator; 2245 2246 array_entry = error->array_member; 2247 num_entries = min_t(u32, error->num_entries, 2248 ARRAY_SIZE(error->array_member)); 2249 2250 for (i = 0; i < num_entries; i++, array_entry++) { 2251 2252 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 2253 continue; 2254 2255 if (error->exposed_mode_adn == i) 2256 ipr_err("Exposed Array Member %d:\n", i); 2257 else 2258 ipr_err("Array Member %d:\n", i); 2259 2260 ipr_err("Array Member %d:\n", i); 2261 ipr_log_ext_vpd(&array_entry->vpd); 2262 ipr_err("Current Location: %s\n", 2263 ipr_format_res_path(ioa_cfg, array_entry->res_path, 2264 buffer, sizeof(buffer))); 2265 ipr_err("Expected Location: %s\n", 2266 ipr_format_res_path(ioa_cfg, 2267 array_entry->expected_res_path, 2268 buffer, sizeof(buffer))); 2269 2270 ipr_err_separator; 2271 } 2272 } 2273 2274 /** 2275 * ipr_log_sis64_fabric_error - Log a sis64 fabric error. 2276 * @ioa_cfg: ioa config struct 2277 * @hostrcb: hostrcb struct 2278 * 2279 * Return value: 2280 * none 2281 **/ 2282 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 2283 struct ipr_hostrcb *hostrcb) 2284 { 2285 struct ipr_hostrcb_type_30_error *error; 2286 struct ipr_hostrcb64_fabric_desc *fabric; 2287 struct ipr_hostrcb64_config_element *cfg; 2288 int i, add_len; 2289 2290 error = &hostrcb->hcam.u.error64.u.type_30_error; 2291 2292 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2293 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 2294 2295 add_len = be32_to_cpu(hostrcb->hcam.length) - 2296 (offsetof(struct ipr_hostrcb64_error, u) + 2297 offsetof(struct ipr_hostrcb_type_30_error, desc)); 2298 2299 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 2300 ipr_log64_fabric_path(hostrcb, fabric); 2301 for_each_fabric_cfg(fabric, cfg) 2302 ipr_log64_path_elem(hostrcb, cfg); 2303 2304 add_len -= be16_to_cpu(fabric->length); 2305 fabric = (struct ipr_hostrcb64_fabric_desc *) 2306 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 2307 } 2308 2309 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len); 2310 } 2311 2312 /** 2313 * ipr_log_sis64_service_required_error - Log a sis64 service required error. 2314 * @ioa_cfg: ioa config struct 2315 * @hostrcb: hostrcb struct 2316 * 2317 * Return value: 2318 * none 2319 **/ 2320 static void ipr_log_sis64_service_required_error(struct ipr_ioa_cfg *ioa_cfg, 2321 struct ipr_hostrcb *hostrcb) 2322 { 2323 struct ipr_hostrcb_type_41_error *error; 2324 2325 error = &hostrcb->hcam.u.error64.u.type_41_error; 2326 2327 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2328 ipr_err("Primary Failure Reason: %s\n", error->failure_reason); 2329 ipr_log_hex_data(ioa_cfg, error->data, 2330 be32_to_cpu(hostrcb->hcam.length) - 2331 (offsetof(struct ipr_hostrcb_error, u) + 2332 offsetof(struct ipr_hostrcb_type_41_error, data))); 2333 } 2334 /** 2335 * ipr_log_generic_error - Log an adapter error. 2336 * @ioa_cfg: ioa config struct 2337 * @hostrcb: hostrcb struct 2338 * 2339 * Return value: 2340 * none 2341 **/ 2342 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, 2343 struct ipr_hostrcb *hostrcb) 2344 { 2345 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data, 2346 be32_to_cpu(hostrcb->hcam.length)); 2347 } 2348 2349 /** 2350 * ipr_log_sis64_device_error - Log a cache error. 2351 * @ioa_cfg: ioa config struct 2352 * @hostrcb: hostrcb struct 2353 * 2354 * Return value: 2355 * none 2356 **/ 2357 static void ipr_log_sis64_device_error(struct ipr_ioa_cfg *ioa_cfg, 2358 struct ipr_hostrcb *hostrcb) 2359 { 2360 struct ipr_hostrcb_type_21_error *error; 2361 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2362 2363 error = &hostrcb->hcam.u.error64.u.type_21_error; 2364 2365 ipr_err("-----Failing Device Information-----\n"); 2366 ipr_err("World Wide Unique ID: %08X%08X%08X%08X\n", 2367 be32_to_cpu(error->wwn[0]), be32_to_cpu(error->wwn[1]), 2368 be32_to_cpu(error->wwn[2]), be32_to_cpu(error->wwn[3])); 2369 ipr_err("Device Resource Path: %s\n", 2370 __ipr_format_res_path(error->res_path, 2371 buffer, sizeof(buffer))); 2372 error->primary_problem_desc[sizeof(error->primary_problem_desc) - 1] = '\0'; 2373 error->second_problem_desc[sizeof(error->second_problem_desc) - 1] = '\0'; 2374 ipr_err("Primary Problem Description: %s\n", error->primary_problem_desc); 2375 ipr_err("Secondary Problem Description: %s\n", error->second_problem_desc); 2376 ipr_err("SCSI Sense Data:\n"); 2377 ipr_log_hex_data(ioa_cfg, error->sense_data, sizeof(error->sense_data)); 2378 ipr_err("SCSI Command Descriptor Block: \n"); 2379 ipr_log_hex_data(ioa_cfg, error->cdb, sizeof(error->cdb)); 2380 2381 ipr_err("Additional IOA Data:\n"); 2382 ipr_log_hex_data(ioa_cfg, error->ioa_data, be32_to_cpu(error->length_of_error)); 2383 } 2384 2385 /** 2386 * ipr_get_error - Find the specfied IOASC in the ipr_error_table. 2387 * @ioasc: IOASC 2388 * 2389 * This function will return the index of into the ipr_error_table 2390 * for the specified IOASC. If the IOASC is not in the table, 2391 * 0 will be returned, which points to the entry used for unknown errors. 2392 * 2393 * Return value: 2394 * index into the ipr_error_table 2395 **/ 2396 static u32 ipr_get_error(u32 ioasc) 2397 { 2398 int i; 2399 2400 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) 2401 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK)) 2402 return i; 2403 2404 return 0; 2405 } 2406 2407 /** 2408 * ipr_handle_log_data - Log an adapter error. 2409 * @ioa_cfg: ioa config struct 2410 * @hostrcb: hostrcb struct 2411 * 2412 * This function logs an adapter error to the system. 2413 * 2414 * Return value: 2415 * none 2416 **/ 2417 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 2418 struct ipr_hostrcb *hostrcb) 2419 { 2420 u32 ioasc; 2421 int error_index; 2422 struct ipr_hostrcb_type_21_error *error; 2423 2424 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) 2425 return; 2426 2427 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) 2428 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); 2429 2430 if (ioa_cfg->sis64) 2431 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc); 2432 else 2433 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 2434 2435 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET || 2436 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) { 2437 /* Tell the midlayer we had a bus reset so it will handle the UA properly */ 2438 scsi_report_bus_reset(ioa_cfg->host, 2439 hostrcb->hcam.u.error.fd_res_addr.bus); 2440 } 2441 2442 error_index = ipr_get_error(ioasc); 2443 2444 if (!ipr_error_table[error_index].log_hcam) 2445 return; 2446 2447 if (ioasc == IPR_IOASC_HW_CMD_FAILED && 2448 hostrcb->hcam.overlay_id == IPR_HOST_RCB_OVERLAY_ID_21) { 2449 error = &hostrcb->hcam.u.error64.u.type_21_error; 2450 2451 if (((be32_to_cpu(error->sense_data[0]) & 0x0000ff00) >> 8) == ILLEGAL_REQUEST && 2452 ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 2453 return; 2454 } 2455 2456 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error); 2457 2458 /* Set indication we have logged an error */ 2459 ioa_cfg->errors_logged++; 2460 2461 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam) 2462 return; 2463 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw)) 2464 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw)); 2465 2466 switch (hostrcb->hcam.overlay_id) { 2467 case IPR_HOST_RCB_OVERLAY_ID_2: 2468 ipr_log_cache_error(ioa_cfg, hostrcb); 2469 break; 2470 case IPR_HOST_RCB_OVERLAY_ID_3: 2471 ipr_log_config_error(ioa_cfg, hostrcb); 2472 break; 2473 case IPR_HOST_RCB_OVERLAY_ID_4: 2474 case IPR_HOST_RCB_OVERLAY_ID_6: 2475 ipr_log_array_error(ioa_cfg, hostrcb); 2476 break; 2477 case IPR_HOST_RCB_OVERLAY_ID_7: 2478 ipr_log_dual_ioa_error(ioa_cfg, hostrcb); 2479 break; 2480 case IPR_HOST_RCB_OVERLAY_ID_12: 2481 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb); 2482 break; 2483 case IPR_HOST_RCB_OVERLAY_ID_13: 2484 ipr_log_enhanced_config_error(ioa_cfg, hostrcb); 2485 break; 2486 case IPR_HOST_RCB_OVERLAY_ID_14: 2487 case IPR_HOST_RCB_OVERLAY_ID_16: 2488 ipr_log_enhanced_array_error(ioa_cfg, hostrcb); 2489 break; 2490 case IPR_HOST_RCB_OVERLAY_ID_17: 2491 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb); 2492 break; 2493 case IPR_HOST_RCB_OVERLAY_ID_20: 2494 ipr_log_fabric_error(ioa_cfg, hostrcb); 2495 break; 2496 case IPR_HOST_RCB_OVERLAY_ID_21: 2497 ipr_log_sis64_device_error(ioa_cfg, hostrcb); 2498 break; 2499 case IPR_HOST_RCB_OVERLAY_ID_23: 2500 ipr_log_sis64_config_error(ioa_cfg, hostrcb); 2501 break; 2502 case IPR_HOST_RCB_OVERLAY_ID_24: 2503 case IPR_HOST_RCB_OVERLAY_ID_26: 2504 ipr_log_sis64_array_error(ioa_cfg, hostrcb); 2505 break; 2506 case IPR_HOST_RCB_OVERLAY_ID_30: 2507 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb); 2508 break; 2509 case IPR_HOST_RCB_OVERLAY_ID_41: 2510 ipr_log_sis64_service_required_error(ioa_cfg, hostrcb); 2511 break; 2512 case IPR_HOST_RCB_OVERLAY_ID_1: 2513 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: 2514 default: 2515 ipr_log_generic_error(ioa_cfg, hostrcb); 2516 break; 2517 } 2518 } 2519 2520 static struct ipr_hostrcb *ipr_get_free_hostrcb(struct ipr_ioa_cfg *ioa) 2521 { 2522 struct ipr_hostrcb *hostrcb; 2523 2524 hostrcb = list_first_entry_or_null(&ioa->hostrcb_free_q, 2525 struct ipr_hostrcb, queue); 2526 2527 if (unlikely(!hostrcb)) { 2528 dev_info(&ioa->pdev->dev, "Reclaiming async error buffers."); 2529 hostrcb = list_first_entry_or_null(&ioa->hostrcb_report_q, 2530 struct ipr_hostrcb, queue); 2531 } 2532 2533 list_del_init(&hostrcb->queue); 2534 return hostrcb; 2535 } 2536 2537 /** 2538 * ipr_process_error - Op done function for an adapter error log. 2539 * @ipr_cmd: ipr command struct 2540 * 2541 * This function is the op done function for an error log host 2542 * controlled async from the adapter. It will log the error and 2543 * send the HCAM back to the adapter. 2544 * 2545 * Return value: 2546 * none 2547 **/ 2548 static void ipr_process_error(struct ipr_cmnd *ipr_cmd) 2549 { 2550 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2551 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 2552 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 2553 u32 fd_ioasc; 2554 2555 if (ioa_cfg->sis64) 2556 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc); 2557 else 2558 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 2559 2560 list_del_init(&hostrcb->queue); 2561 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 2562 2563 if (!ioasc) { 2564 ipr_handle_log_data(ioa_cfg, hostrcb); 2565 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED) 2566 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV); 2567 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET && 2568 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) { 2569 dev_err(&ioa_cfg->pdev->dev, 2570 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 2571 } 2572 2573 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_report_q); 2574 schedule_work(&ioa_cfg->work_q); 2575 hostrcb = ipr_get_free_hostrcb(ioa_cfg); 2576 2577 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 2578 } 2579 2580 /** 2581 * ipr_timeout - An internally generated op has timed out. 2582 * @t: Timer context used to fetch ipr command struct 2583 * 2584 * This function blocks host requests and initiates an 2585 * adapter reset. 2586 * 2587 * Return value: 2588 * none 2589 **/ 2590 static void ipr_timeout(struct timer_list *t) 2591 { 2592 struct ipr_cmnd *ipr_cmd = timer_container_of(ipr_cmd, t, timer); 2593 unsigned long lock_flags = 0; 2594 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2595 2596 ENTER; 2597 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2598 2599 ioa_cfg->errors_logged++; 2600 dev_err(&ioa_cfg->pdev->dev, 2601 "Adapter being reset due to command timeout.\n"); 2602 2603 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 2604 ioa_cfg->sdt_state = GET_DUMP; 2605 2606 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) 2607 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2608 2609 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2610 LEAVE; 2611 } 2612 2613 /** 2614 * ipr_oper_timeout - Adapter timed out transitioning to operational 2615 * @t: Timer context used to fetch ipr command struct 2616 * 2617 * This function blocks host requests and initiates an 2618 * adapter reset. 2619 * 2620 * Return value: 2621 * none 2622 **/ 2623 static void ipr_oper_timeout(struct timer_list *t) 2624 { 2625 struct ipr_cmnd *ipr_cmd = timer_container_of(ipr_cmd, t, timer); 2626 unsigned long lock_flags = 0; 2627 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2628 2629 ENTER; 2630 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2631 2632 ioa_cfg->errors_logged++; 2633 dev_err(&ioa_cfg->pdev->dev, 2634 "Adapter timed out transitioning to operational.\n"); 2635 2636 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 2637 ioa_cfg->sdt_state = GET_DUMP; 2638 2639 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { 2640 if (ipr_fastfail) 2641 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 2642 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2643 } 2644 2645 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2646 LEAVE; 2647 } 2648 2649 /** 2650 * ipr_find_ses_entry - Find matching SES in SES table 2651 * @res: resource entry struct of SES 2652 * 2653 * Return value: 2654 * pointer to SES table entry / NULL on failure 2655 **/ 2656 static const struct ipr_ses_table_entry * 2657 ipr_find_ses_entry(struct ipr_resource_entry *res) 2658 { 2659 int i, j, matches; 2660 struct ipr_std_inq_vpids *vpids; 2661 const struct ipr_ses_table_entry *ste = ipr_ses_table; 2662 2663 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { 2664 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { 2665 if (ste->compare_product_id_byte[j] == 'X') { 2666 vpids = &res->std_inq_data.vpids; 2667 if (vpids->product_id[j] == ste->product_id[j]) 2668 matches++; 2669 else 2670 break; 2671 } else 2672 matches++; 2673 } 2674 2675 if (matches == IPR_PROD_ID_LEN) 2676 return ste; 2677 } 2678 2679 return NULL; 2680 } 2681 2682 /** 2683 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus 2684 * @ioa_cfg: ioa config struct 2685 * @bus: SCSI bus 2686 * @bus_width: bus width 2687 * 2688 * Return value: 2689 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz 2690 * For a 2-byte wide SCSI bus, the maximum transfer speed is 2691 * twice the maximum transfer rate (e.g. for a wide enabled bus, 2692 * max 160MHz = max 320MB/sec). 2693 **/ 2694 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) 2695 { 2696 struct ipr_resource_entry *res; 2697 const struct ipr_ses_table_entry *ste; 2698 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); 2699 2700 /* Loop through each config table entry in the config table buffer */ 2701 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2702 if (!(IPR_IS_SES_DEVICE(res->std_inq_data))) 2703 continue; 2704 2705 if (bus != res->bus) 2706 continue; 2707 2708 if (!(ste = ipr_find_ses_entry(res))) 2709 continue; 2710 2711 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); 2712 } 2713 2714 return max_xfer_rate; 2715 } 2716 2717 /** 2718 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA 2719 * @ioa_cfg: ioa config struct 2720 * @max_delay: max delay in micro-seconds to wait 2721 * 2722 * Waits for an IODEBUG ACK from the IOA, doing busy looping. 2723 * 2724 * Return value: 2725 * 0 on success / other on failure 2726 **/ 2727 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) 2728 { 2729 volatile u32 pcii_reg; 2730 int delay = 1; 2731 2732 /* Read interrupt reg until IOA signals IO Debug Acknowledge */ 2733 while (delay < max_delay) { 2734 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 2735 2736 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) 2737 return 0; 2738 2739 /* udelay cannot be used if delay is more than a few milliseconds */ 2740 if ((delay / 1000) > MAX_UDELAY_MS) 2741 mdelay(delay / 1000); 2742 else 2743 udelay(delay); 2744 2745 delay += delay; 2746 } 2747 return -EIO; 2748 } 2749 2750 /** 2751 * ipr_get_sis64_dump_data_section - Dump IOA memory 2752 * @ioa_cfg: ioa config struct 2753 * @start_addr: adapter address to dump 2754 * @dest: destination kernel buffer 2755 * @length_in_words: length to dump in 4 byte words 2756 * 2757 * Return value: 2758 * 0 on success 2759 **/ 2760 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg, 2761 u32 start_addr, 2762 __be32 *dest, u32 length_in_words) 2763 { 2764 int i; 2765 2766 for (i = 0; i < length_in_words; i++) { 2767 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg); 2768 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg)); 2769 dest++; 2770 } 2771 2772 return 0; 2773 } 2774 2775 /** 2776 * ipr_get_ldump_data_section - Dump IOA memory 2777 * @ioa_cfg: ioa config struct 2778 * @start_addr: adapter address to dump 2779 * @dest: destination kernel buffer 2780 * @length_in_words: length to dump in 4 byte words 2781 * 2782 * Return value: 2783 * 0 on success / -EIO on failure 2784 **/ 2785 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, 2786 u32 start_addr, 2787 __be32 *dest, u32 length_in_words) 2788 { 2789 volatile u32 temp_pcii_reg; 2790 int i, delay = 0; 2791 2792 if (ioa_cfg->sis64) 2793 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr, 2794 dest, length_in_words); 2795 2796 /* Write IOA interrupt reg starting LDUMP state */ 2797 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), 2798 ioa_cfg->regs.set_uproc_interrupt_reg32); 2799 2800 /* Wait for IO debug acknowledge */ 2801 if (ipr_wait_iodbg_ack(ioa_cfg, 2802 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { 2803 dev_err(&ioa_cfg->pdev->dev, 2804 "IOA dump long data transfer timeout\n"); 2805 return -EIO; 2806 } 2807 2808 /* Signal LDUMP interlocked - clear IO debug ack */ 2809 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2810 ioa_cfg->regs.clr_interrupt_reg); 2811 2812 /* Write Mailbox with starting address */ 2813 writel(start_addr, ioa_cfg->ioa_mailbox); 2814 2815 /* Signal address valid - clear IOA Reset alert */ 2816 writel(IPR_UPROCI_RESET_ALERT, 2817 ioa_cfg->regs.clr_uproc_interrupt_reg32); 2818 2819 for (i = 0; i < length_in_words; i++) { 2820 /* Wait for IO debug acknowledge */ 2821 if (ipr_wait_iodbg_ack(ioa_cfg, 2822 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { 2823 dev_err(&ioa_cfg->pdev->dev, 2824 "IOA dump short data transfer timeout\n"); 2825 return -EIO; 2826 } 2827 2828 /* Read data from mailbox and increment destination pointer */ 2829 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); 2830 dest++; 2831 2832 /* For all but the last word of data, signal data received */ 2833 if (i < (length_in_words - 1)) { 2834 /* Signal dump data received - Clear IO debug Ack */ 2835 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2836 ioa_cfg->regs.clr_interrupt_reg); 2837 } 2838 } 2839 2840 /* Signal end of block transfer. Set reset alert then clear IO debug ack */ 2841 writel(IPR_UPROCI_RESET_ALERT, 2842 ioa_cfg->regs.set_uproc_interrupt_reg32); 2843 2844 writel(IPR_UPROCI_IO_DEBUG_ALERT, 2845 ioa_cfg->regs.clr_uproc_interrupt_reg32); 2846 2847 /* Signal dump data received - Clear IO debug Ack */ 2848 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2849 ioa_cfg->regs.clr_interrupt_reg); 2850 2851 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ 2852 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { 2853 temp_pcii_reg = 2854 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); 2855 2856 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) 2857 return 0; 2858 2859 udelay(10); 2860 delay += 10; 2861 } 2862 2863 return 0; 2864 } 2865 2866 #ifdef CONFIG_SCSI_IPR_DUMP 2867 /** 2868 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer 2869 * @ioa_cfg: ioa config struct 2870 * @pci_address: adapter address 2871 * @length: length of data to copy 2872 * 2873 * Copy data from PCI adapter to kernel buffer. 2874 * Note: length MUST be a 4 byte multiple 2875 * Return value: 2876 * 0 on success / other on failure 2877 **/ 2878 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, 2879 unsigned long pci_address, u32 length) 2880 { 2881 int bytes_copied = 0; 2882 int cur_len, rc, rem_len, rem_page_len, max_dump_size; 2883 __be32 *page; 2884 unsigned long lock_flags = 0; 2885 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; 2886 2887 if (ioa_cfg->sis64) 2888 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE; 2889 else 2890 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE; 2891 2892 while (bytes_copied < length && 2893 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) { 2894 if (ioa_dump->page_offset >= PAGE_SIZE || 2895 ioa_dump->page_offset == 0) { 2896 page = (__be32 *)__get_free_page(GFP_ATOMIC); 2897 2898 if (!page) { 2899 ipr_trace; 2900 return bytes_copied; 2901 } 2902 2903 ioa_dump->page_offset = 0; 2904 ioa_dump->ioa_data[ioa_dump->next_page_index] = page; 2905 ioa_dump->next_page_index++; 2906 } else 2907 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; 2908 2909 rem_len = length - bytes_copied; 2910 rem_page_len = PAGE_SIZE - ioa_dump->page_offset; 2911 cur_len = min(rem_len, rem_page_len); 2912 2913 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2914 if (ioa_cfg->sdt_state == ABORT_DUMP) { 2915 rc = -EIO; 2916 } else { 2917 rc = ipr_get_ldump_data_section(ioa_cfg, 2918 pci_address + bytes_copied, 2919 &page[ioa_dump->page_offset / 4], 2920 (cur_len / sizeof(u32))); 2921 } 2922 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2923 2924 if (!rc) { 2925 ioa_dump->page_offset += cur_len; 2926 bytes_copied += cur_len; 2927 } else { 2928 ipr_trace; 2929 break; 2930 } 2931 schedule(); 2932 } 2933 2934 return bytes_copied; 2935 } 2936 2937 /** 2938 * ipr_init_dump_entry_hdr - Initialize a dump entry header. 2939 * @hdr: dump entry header struct 2940 * 2941 * Return value: 2942 * nothing 2943 **/ 2944 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) 2945 { 2946 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; 2947 hdr->num_elems = 1; 2948 hdr->offset = sizeof(*hdr); 2949 hdr->status = IPR_DUMP_STATUS_SUCCESS; 2950 } 2951 2952 /** 2953 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. 2954 * @ioa_cfg: ioa config struct 2955 * @driver_dump: driver dump struct 2956 * 2957 * Return value: 2958 * nothing 2959 **/ 2960 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, 2961 struct ipr_driver_dump *driver_dump) 2962 { 2963 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2964 2965 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); 2966 driver_dump->ioa_type_entry.hdr.len = 2967 sizeof(struct ipr_dump_ioa_type_entry) - 2968 sizeof(struct ipr_dump_entry_header); 2969 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2970 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; 2971 driver_dump->ioa_type_entry.type = ioa_cfg->type; 2972 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | 2973 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | 2974 ucode_vpd->minor_release[1]; 2975 driver_dump->hdr.num_entries++; 2976 } 2977 2978 /** 2979 * ipr_dump_version_data - Fill in the driver version in the dump. 2980 * @ioa_cfg: ioa config struct 2981 * @driver_dump: driver dump struct 2982 * 2983 * Return value: 2984 * nothing 2985 **/ 2986 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, 2987 struct ipr_driver_dump *driver_dump) 2988 { 2989 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); 2990 driver_dump->version_entry.hdr.len = 2991 sizeof(struct ipr_dump_version_entry) - 2992 sizeof(struct ipr_dump_entry_header); 2993 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2994 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; 2995 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); 2996 driver_dump->hdr.num_entries++; 2997 } 2998 2999 /** 3000 * ipr_dump_trace_data - Fill in the IOA trace in the dump. 3001 * @ioa_cfg: ioa config struct 3002 * @driver_dump: driver dump struct 3003 * 3004 * Return value: 3005 * nothing 3006 **/ 3007 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, 3008 struct ipr_driver_dump *driver_dump) 3009 { 3010 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); 3011 driver_dump->trace_entry.hdr.len = 3012 sizeof(struct ipr_dump_trace_entry) - 3013 sizeof(struct ipr_dump_entry_header); 3014 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 3015 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; 3016 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); 3017 driver_dump->hdr.num_entries++; 3018 } 3019 3020 /** 3021 * ipr_dump_location_data - Fill in the IOA location in the dump. 3022 * @ioa_cfg: ioa config struct 3023 * @driver_dump: driver dump struct 3024 * 3025 * Return value: 3026 * nothing 3027 **/ 3028 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, 3029 struct ipr_driver_dump *driver_dump) 3030 { 3031 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); 3032 driver_dump->location_entry.hdr.len = 3033 sizeof(struct ipr_dump_location_entry) - 3034 sizeof(struct ipr_dump_entry_header); 3035 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 3036 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; 3037 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev)); 3038 driver_dump->hdr.num_entries++; 3039 } 3040 3041 /** 3042 * ipr_get_ioa_dump - Perform a dump of the driver and adapter. 3043 * @ioa_cfg: ioa config struct 3044 * @dump: dump struct 3045 * 3046 * Return value: 3047 * nothing 3048 **/ 3049 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) 3050 { 3051 unsigned long start_addr, sdt_word; 3052 unsigned long lock_flags = 0; 3053 struct ipr_driver_dump *driver_dump = &dump->driver_dump; 3054 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; 3055 u32 num_entries, max_num_entries, start_off, end_off; 3056 u32 max_dump_size, bytes_to_copy, bytes_copied, rc; 3057 struct ipr_sdt *sdt; 3058 int valid = 1; 3059 int i; 3060 3061 ENTER; 3062 3063 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3064 3065 if (ioa_cfg->sdt_state != READ_DUMP) { 3066 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3067 return; 3068 } 3069 3070 if (ioa_cfg->sis64) { 3071 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3072 ssleep(IPR_DUMP_DELAY_SECONDS); 3073 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3074 } 3075 3076 start_addr = readl(ioa_cfg->ioa_mailbox); 3077 3078 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) { 3079 dev_err(&ioa_cfg->pdev->dev, 3080 "Invalid dump table format: %lx\n", start_addr); 3081 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3082 return; 3083 } 3084 3085 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); 3086 3087 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; 3088 3089 /* Initialize the overall dump header */ 3090 driver_dump->hdr.len = sizeof(struct ipr_driver_dump); 3091 driver_dump->hdr.num_entries = 1; 3092 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); 3093 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; 3094 driver_dump->hdr.os = IPR_DUMP_OS_LINUX; 3095 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; 3096 3097 ipr_dump_version_data(ioa_cfg, driver_dump); 3098 ipr_dump_location_data(ioa_cfg, driver_dump); 3099 ipr_dump_ioa_type_data(ioa_cfg, driver_dump); 3100 ipr_dump_trace_data(ioa_cfg, driver_dump); 3101 3102 /* Update dump_header */ 3103 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); 3104 3105 /* IOA Dump entry */ 3106 ipr_init_dump_entry_hdr(&ioa_dump->hdr); 3107 ioa_dump->hdr.len = 0; 3108 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 3109 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; 3110 3111 /* First entries in sdt are actually a list of dump addresses and 3112 lengths to gather the real dump data. sdt represents the pointer 3113 to the ioa generated dump table. Dump data will be extracted based 3114 on entries in this table */ 3115 sdt = &ioa_dump->sdt; 3116 3117 if (ioa_cfg->sis64) { 3118 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES; 3119 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE; 3120 } else { 3121 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES; 3122 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE; 3123 } 3124 3125 bytes_to_copy = offsetof(struct ipr_sdt, entry) + 3126 (max_num_entries * sizeof(struct ipr_sdt_entry)); 3127 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, 3128 bytes_to_copy / sizeof(__be32)); 3129 3130 /* Smart Dump table is ready to use and the first entry is valid */ 3131 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) && 3132 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) { 3133 dev_err(&ioa_cfg->pdev->dev, 3134 "Dump of IOA failed. Dump table not valid: %d, %X.\n", 3135 rc, be32_to_cpu(sdt->hdr.state)); 3136 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; 3137 ioa_cfg->sdt_state = DUMP_OBTAINED; 3138 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3139 return; 3140 } 3141 3142 num_entries = be32_to_cpu(sdt->hdr.num_entries_used); 3143 3144 if (num_entries > max_num_entries) 3145 num_entries = max_num_entries; 3146 3147 /* Update dump length to the actual data to be copied */ 3148 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header); 3149 if (ioa_cfg->sis64) 3150 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry); 3151 else 3152 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry); 3153 3154 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3155 3156 for (i = 0; i < num_entries; i++) { 3157 if (ioa_dump->hdr.len > max_dump_size) { 3158 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 3159 break; 3160 } 3161 3162 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { 3163 sdt_word = be32_to_cpu(sdt->entry[i].start_token); 3164 if (ioa_cfg->sis64) 3165 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token); 3166 else { 3167 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; 3168 end_off = be32_to_cpu(sdt->entry[i].end_token); 3169 3170 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) 3171 bytes_to_copy = end_off - start_off; 3172 else 3173 valid = 0; 3174 } 3175 if (valid) { 3176 if (bytes_to_copy > max_dump_size) { 3177 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; 3178 continue; 3179 } 3180 3181 /* Copy data from adapter to driver buffers */ 3182 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, 3183 bytes_to_copy); 3184 3185 ioa_dump->hdr.len += bytes_copied; 3186 3187 if (bytes_copied != bytes_to_copy) { 3188 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 3189 break; 3190 } 3191 } 3192 } 3193 } 3194 3195 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); 3196 3197 /* Update dump_header */ 3198 driver_dump->hdr.len += ioa_dump->hdr.len; 3199 wmb(); 3200 ioa_cfg->sdt_state = DUMP_OBTAINED; 3201 LEAVE; 3202 } 3203 3204 #else 3205 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0) 3206 #endif 3207 3208 /** 3209 * ipr_release_dump - Free adapter dump memory 3210 * @kref: kref struct 3211 * 3212 * Return value: 3213 * nothing 3214 **/ 3215 static void ipr_release_dump(struct kref *kref) 3216 { 3217 struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref); 3218 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; 3219 unsigned long lock_flags = 0; 3220 int i; 3221 3222 ENTER; 3223 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3224 ioa_cfg->dump = NULL; 3225 ioa_cfg->sdt_state = INACTIVE; 3226 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3227 3228 for (i = 0; i < dump->ioa_dump.next_page_index; i++) 3229 free_page((unsigned long) dump->ioa_dump.ioa_data[i]); 3230 3231 vfree(dump->ioa_dump.ioa_data); 3232 kfree(dump); 3233 LEAVE; 3234 } 3235 3236 static void ipr_add_remove_thread(struct work_struct *work) 3237 { 3238 unsigned long lock_flags; 3239 struct ipr_resource_entry *res; 3240 struct scsi_device *sdev; 3241 struct ipr_ioa_cfg *ioa_cfg = 3242 container_of(work, struct ipr_ioa_cfg, scsi_add_work_q); 3243 u8 bus, target, lun; 3244 int did_work; 3245 3246 ENTER; 3247 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3248 3249 restart: 3250 do { 3251 did_work = 0; 3252 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) { 3253 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3254 return; 3255 } 3256 3257 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3258 if (res->del_from_ml && res->sdev) { 3259 did_work = 1; 3260 sdev = res->sdev; 3261 if (!scsi_device_get(sdev)) { 3262 if (!res->add_to_ml) 3263 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 3264 else 3265 res->del_from_ml = 0; 3266 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3267 scsi_remove_device(sdev); 3268 scsi_device_put(sdev); 3269 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3270 } 3271 break; 3272 } 3273 } 3274 } while (did_work); 3275 3276 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3277 if (res->add_to_ml) { 3278 bus = res->bus; 3279 target = res->target; 3280 lun = res->lun; 3281 res->add_to_ml = 0; 3282 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3283 scsi_add_device(ioa_cfg->host, bus, target, lun); 3284 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3285 goto restart; 3286 } 3287 } 3288 3289 ioa_cfg->scan_done = 1; 3290 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3291 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE); 3292 LEAVE; 3293 } 3294 3295 /** 3296 * ipr_worker_thread - Worker thread 3297 * @work: ioa config struct 3298 * 3299 * Called at task level from a work thread. This function takes care 3300 * of adding and removing device from the mid-layer as configuration 3301 * changes are detected by the adapter. 3302 * 3303 * Return value: 3304 * nothing 3305 **/ 3306 static void ipr_worker_thread(struct work_struct *work) 3307 { 3308 unsigned long lock_flags; 3309 struct ipr_dump *dump; 3310 struct ipr_ioa_cfg *ioa_cfg = 3311 container_of(work, struct ipr_ioa_cfg, work_q); 3312 3313 ENTER; 3314 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3315 3316 if (ioa_cfg->sdt_state == READ_DUMP) { 3317 dump = ioa_cfg->dump; 3318 if (!dump) { 3319 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3320 return; 3321 } 3322 kref_get(&dump->kref); 3323 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3324 ipr_get_ioa_dump(ioa_cfg, dump); 3325 kref_put(&dump->kref, ipr_release_dump); 3326 3327 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3328 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout) 3329 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3330 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3331 return; 3332 } 3333 3334 if (ioa_cfg->scsi_unblock) { 3335 ioa_cfg->scsi_unblock = 0; 3336 ioa_cfg->scsi_blocked = 0; 3337 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3338 scsi_unblock_requests(ioa_cfg->host); 3339 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3340 if (ioa_cfg->scsi_blocked) 3341 scsi_block_requests(ioa_cfg->host); 3342 } 3343 3344 if (!ioa_cfg->scan_enabled) { 3345 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3346 return; 3347 } 3348 3349 schedule_work(&ioa_cfg->scsi_add_work_q); 3350 3351 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3352 LEAVE; 3353 } 3354 3355 #ifdef CONFIG_SCSI_IPR_TRACE 3356 /** 3357 * ipr_read_trace - Dump the adapter trace 3358 * @filp: open sysfs file 3359 * @kobj: kobject struct 3360 * @bin_attr: bin_attribute struct 3361 * @buf: buffer 3362 * @off: offset 3363 * @count: buffer size 3364 * 3365 * Return value: 3366 * number of bytes printed to buffer 3367 **/ 3368 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj, 3369 const struct bin_attribute *bin_attr, 3370 char *buf, loff_t off, size_t count) 3371 { 3372 struct device *dev = kobj_to_dev(kobj); 3373 struct Scsi_Host *shost = class_to_shost(dev); 3374 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3375 unsigned long lock_flags = 0; 3376 ssize_t ret; 3377 3378 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3379 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace, 3380 IPR_TRACE_SIZE); 3381 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3382 3383 return ret; 3384 } 3385 3386 static const struct bin_attribute ipr_trace_attr = { 3387 .attr = { 3388 .name = "trace", 3389 .mode = S_IRUGO, 3390 }, 3391 .size = 0, 3392 .read = ipr_read_trace, 3393 }; 3394 #endif 3395 3396 /** 3397 * ipr_show_fw_version - Show the firmware version 3398 * @dev: class device struct 3399 * @attr: device attribute (unused) 3400 * @buf: buffer 3401 * 3402 * Return value: 3403 * number of bytes printed to buffer 3404 **/ 3405 static ssize_t ipr_show_fw_version(struct device *dev, 3406 struct device_attribute *attr, char *buf) 3407 { 3408 struct Scsi_Host *shost = class_to_shost(dev); 3409 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3410 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 3411 unsigned long lock_flags = 0; 3412 int len; 3413 3414 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3415 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 3416 ucode_vpd->major_release, ucode_vpd->card_type, 3417 ucode_vpd->minor_release[0], 3418 ucode_vpd->minor_release[1]); 3419 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3420 return len; 3421 } 3422 3423 static struct device_attribute ipr_fw_version_attr = { 3424 .attr = { 3425 .name = "fw_version", 3426 .mode = S_IRUGO, 3427 }, 3428 .show = ipr_show_fw_version, 3429 }; 3430 3431 /** 3432 * ipr_show_log_level - Show the adapter's error logging level 3433 * @dev: class device struct 3434 * @attr: device attribute (unused) 3435 * @buf: buffer 3436 * 3437 * Return value: 3438 * number of bytes printed to buffer 3439 **/ 3440 static ssize_t ipr_show_log_level(struct device *dev, 3441 struct device_attribute *attr, char *buf) 3442 { 3443 struct Scsi_Host *shost = class_to_shost(dev); 3444 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3445 unsigned long lock_flags = 0; 3446 int len; 3447 3448 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3449 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 3450 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3451 return len; 3452 } 3453 3454 /** 3455 * ipr_store_log_level - Change the adapter's error logging level 3456 * @dev: class device struct 3457 * @attr: device attribute (unused) 3458 * @buf: buffer 3459 * @count: buffer size 3460 * 3461 * Return value: 3462 * number of bytes printed to buffer 3463 **/ 3464 static ssize_t ipr_store_log_level(struct device *dev, 3465 struct device_attribute *attr, 3466 const char *buf, size_t count) 3467 { 3468 struct Scsi_Host *shost = class_to_shost(dev); 3469 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3470 unsigned long lock_flags = 0; 3471 3472 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3473 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 3474 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3475 return strlen(buf); 3476 } 3477 3478 static struct device_attribute ipr_log_level_attr = { 3479 .attr = { 3480 .name = "log_level", 3481 .mode = S_IRUGO | S_IWUSR, 3482 }, 3483 .show = ipr_show_log_level, 3484 .store = ipr_store_log_level 3485 }; 3486 3487 /** 3488 * ipr_store_diagnostics - IOA Diagnostics interface 3489 * @dev: device struct 3490 * @attr: device attribute (unused) 3491 * @buf: buffer 3492 * @count: buffer size 3493 * 3494 * This function will reset the adapter and wait a reasonable 3495 * amount of time for any errors that the adapter might log. 3496 * 3497 * Return value: 3498 * count on success / other on failure 3499 **/ 3500 static ssize_t ipr_store_diagnostics(struct device *dev, 3501 struct device_attribute *attr, 3502 const char *buf, size_t count) 3503 { 3504 struct Scsi_Host *shost = class_to_shost(dev); 3505 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3506 unsigned long lock_flags = 0; 3507 int rc = count; 3508 3509 if (!capable(CAP_SYS_ADMIN)) 3510 return -EACCES; 3511 3512 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3513 while (ioa_cfg->in_reset_reload) { 3514 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3515 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3516 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3517 } 3518 3519 ioa_cfg->errors_logged = 0; 3520 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3521 3522 if (ioa_cfg->in_reset_reload) { 3523 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3524 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3525 3526 /* Wait for a second for any errors to be logged */ 3527 msleep(1000); 3528 } else { 3529 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3530 return -EIO; 3531 } 3532 3533 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3534 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 3535 rc = -EIO; 3536 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3537 3538 return rc; 3539 } 3540 3541 static struct device_attribute ipr_diagnostics_attr = { 3542 .attr = { 3543 .name = "run_diagnostics", 3544 .mode = S_IWUSR, 3545 }, 3546 .store = ipr_store_diagnostics 3547 }; 3548 3549 /** 3550 * ipr_show_adapter_state - Show the adapter's state 3551 * @dev: device struct 3552 * @attr: device attribute (unused) 3553 * @buf: buffer 3554 * 3555 * Return value: 3556 * number of bytes printed to buffer 3557 **/ 3558 static ssize_t ipr_show_adapter_state(struct device *dev, 3559 struct device_attribute *attr, char *buf) 3560 { 3561 struct Scsi_Host *shost = class_to_shost(dev); 3562 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3563 unsigned long lock_flags = 0; 3564 int len; 3565 3566 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3567 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 3568 len = snprintf(buf, PAGE_SIZE, "offline\n"); 3569 else 3570 len = snprintf(buf, PAGE_SIZE, "online\n"); 3571 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3572 return len; 3573 } 3574 3575 /** 3576 * ipr_store_adapter_state - Change adapter state 3577 * @dev: device struct 3578 * @attr: device attribute (unused) 3579 * @buf: buffer 3580 * @count: buffer size 3581 * 3582 * This function will change the adapter's state. 3583 * 3584 * Return value: 3585 * count on success / other on failure 3586 **/ 3587 static ssize_t ipr_store_adapter_state(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; 3594 int result = count, i; 3595 3596 if (!capable(CAP_SYS_ADMIN)) 3597 return -EACCES; 3598 3599 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3600 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && 3601 !strncmp(buf, "online", 6)) { 3602 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 3603 spin_lock(&ioa_cfg->hrrq[i]._lock); 3604 ioa_cfg->hrrq[i].ioa_is_dead = 0; 3605 spin_unlock(&ioa_cfg->hrrq[i]._lock); 3606 } 3607 wmb(); 3608 ioa_cfg->reset_retries = 0; 3609 ioa_cfg->in_ioa_bringdown = 0; 3610 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3611 } 3612 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3613 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3614 3615 return result; 3616 } 3617 3618 static struct device_attribute ipr_ioa_state_attr = { 3619 .attr = { 3620 .name = "online_state", 3621 .mode = S_IRUGO | S_IWUSR, 3622 }, 3623 .show = ipr_show_adapter_state, 3624 .store = ipr_store_adapter_state 3625 }; 3626 3627 /** 3628 * ipr_store_reset_adapter - Reset the adapter 3629 * @dev: device struct 3630 * @attr: device attribute (unused) 3631 * @buf: buffer 3632 * @count: buffer size 3633 * 3634 * This function will reset the adapter. 3635 * 3636 * Return value: 3637 * count on success / other on failure 3638 **/ 3639 static ssize_t ipr_store_reset_adapter(struct device *dev, 3640 struct device_attribute *attr, 3641 const char *buf, size_t count) 3642 { 3643 struct Scsi_Host *shost = class_to_shost(dev); 3644 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3645 unsigned long lock_flags; 3646 int result = count; 3647 3648 if (!capable(CAP_SYS_ADMIN)) 3649 return -EACCES; 3650 3651 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3652 if (!ioa_cfg->in_reset_reload) 3653 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3654 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3655 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3656 3657 return result; 3658 } 3659 3660 static struct device_attribute ipr_ioa_reset_attr = { 3661 .attr = { 3662 .name = "reset_host", 3663 .mode = S_IWUSR, 3664 }, 3665 .store = ipr_store_reset_adapter 3666 }; 3667 3668 static int ipr_iopoll(struct irq_poll *iop, int budget); 3669 /** 3670 * ipr_show_iopoll_weight - Show ipr polling mode 3671 * @dev: class device struct 3672 * @attr: device attribute (unused) 3673 * @buf: buffer 3674 * 3675 * Return value: 3676 * number of bytes printed to buffer 3677 **/ 3678 static ssize_t ipr_show_iopoll_weight(struct device *dev, 3679 struct device_attribute *attr, char *buf) 3680 { 3681 struct Scsi_Host *shost = class_to_shost(dev); 3682 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3683 unsigned long lock_flags = 0; 3684 int len; 3685 3686 spin_lock_irqsave(shost->host_lock, lock_flags); 3687 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight); 3688 spin_unlock_irqrestore(shost->host_lock, lock_flags); 3689 3690 return len; 3691 } 3692 3693 /** 3694 * ipr_store_iopoll_weight - Change the adapter's polling mode 3695 * @dev: class device struct 3696 * @attr: device attribute (unused) 3697 * @buf: buffer 3698 * @count: buffer size 3699 * 3700 * Return value: 3701 * number of bytes printed to buffer 3702 **/ 3703 static ssize_t ipr_store_iopoll_weight(struct device *dev, 3704 struct device_attribute *attr, 3705 const char *buf, size_t count) 3706 { 3707 struct Scsi_Host *shost = class_to_shost(dev); 3708 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3709 unsigned long user_iopoll_weight; 3710 unsigned long lock_flags = 0; 3711 int i; 3712 3713 if (!ioa_cfg->sis64) { 3714 dev_info(&ioa_cfg->pdev->dev, "irq_poll not supported on this adapter\n"); 3715 return -EINVAL; 3716 } 3717 if (kstrtoul(buf, 10, &user_iopoll_weight)) 3718 return -EINVAL; 3719 3720 if (user_iopoll_weight > 256) { 3721 dev_info(&ioa_cfg->pdev->dev, "Invalid irq_poll weight. It must be less than 256\n"); 3722 return -EINVAL; 3723 } 3724 3725 if (user_iopoll_weight == ioa_cfg->iopoll_weight) { 3726 dev_info(&ioa_cfg->pdev->dev, "Current irq_poll weight has the same weight\n"); 3727 return strlen(buf); 3728 } 3729 3730 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 3731 for (i = 1; i < ioa_cfg->hrrq_num; i++) 3732 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll); 3733 } 3734 3735 spin_lock_irqsave(shost->host_lock, lock_flags); 3736 ioa_cfg->iopoll_weight = user_iopoll_weight; 3737 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 3738 for (i = 1; i < ioa_cfg->hrrq_num; i++) { 3739 irq_poll_init(&ioa_cfg->hrrq[i].iopoll, 3740 ioa_cfg->iopoll_weight, ipr_iopoll); 3741 } 3742 } 3743 spin_unlock_irqrestore(shost->host_lock, lock_flags); 3744 3745 return strlen(buf); 3746 } 3747 3748 static struct device_attribute ipr_iopoll_weight_attr = { 3749 .attr = { 3750 .name = "iopoll_weight", 3751 .mode = S_IRUGO | S_IWUSR, 3752 }, 3753 .show = ipr_show_iopoll_weight, 3754 .store = ipr_store_iopoll_weight 3755 }; 3756 3757 /** 3758 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 3759 * @buf_len: buffer length 3760 * 3761 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 3762 * list to use for microcode download 3763 * 3764 * Return value: 3765 * pointer to sglist / NULL on failure 3766 **/ 3767 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 3768 { 3769 int sg_size, order; 3770 struct ipr_sglist *sglist; 3771 3772 /* Get the minimum size per scatter/gather element */ 3773 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 3774 3775 /* Get the actual size per element */ 3776 order = get_order(sg_size); 3777 3778 /* Allocate a scatter/gather list for the DMA */ 3779 sglist = kzalloc(sizeof(struct ipr_sglist), GFP_KERNEL); 3780 if (sglist == NULL) { 3781 ipr_trace; 3782 return NULL; 3783 } 3784 sglist->order = order; 3785 sglist->scatterlist = sgl_alloc_order(buf_len, order, false, GFP_KERNEL, 3786 &sglist->num_sg); 3787 if (!sglist->scatterlist) { 3788 kfree(sglist); 3789 return NULL; 3790 } 3791 3792 return sglist; 3793 } 3794 3795 /** 3796 * ipr_free_ucode_buffer - Frees a microcode download buffer 3797 * @sglist: scatter/gather list pointer 3798 * 3799 * Free a DMA'able ucode download buffer previously allocated with 3800 * ipr_alloc_ucode_buffer 3801 * 3802 * Return value: 3803 * nothing 3804 **/ 3805 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 3806 { 3807 sgl_free_order(sglist->scatterlist, sglist->order); 3808 kfree(sglist); 3809 } 3810 3811 /** 3812 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 3813 * @sglist: scatter/gather list pointer 3814 * @buffer: buffer pointer 3815 * @len: buffer length 3816 * 3817 * Copy a microcode image from a user buffer into a buffer allocated by 3818 * ipr_alloc_ucode_buffer 3819 * 3820 * Return value: 3821 * 0 on success / other on failure 3822 **/ 3823 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 3824 u8 *buffer, u32 len) 3825 { 3826 int bsize_elem, i, result = 0; 3827 struct scatterlist *sg; 3828 3829 /* Determine the actual number of bytes per element */ 3830 bsize_elem = PAGE_SIZE * (1 << sglist->order); 3831 3832 sg = sglist->scatterlist; 3833 3834 for (i = 0; i < (len / bsize_elem); i++, sg = sg_next(sg), 3835 buffer += bsize_elem) { 3836 struct page *page = sg_page(sg); 3837 3838 memcpy_to_page(page, 0, buffer, bsize_elem); 3839 3840 sg->length = bsize_elem; 3841 3842 if (result != 0) { 3843 ipr_trace; 3844 return result; 3845 } 3846 } 3847 3848 if (len % bsize_elem) { 3849 struct page *page = sg_page(sg); 3850 3851 memcpy_to_page(page, 0, buffer, len % bsize_elem); 3852 3853 sg->length = len % bsize_elem; 3854 } 3855 3856 sglist->buffer_len = len; 3857 return result; 3858 } 3859 3860 /** 3861 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL 3862 * @ipr_cmd: ipr command struct 3863 * @sglist: scatter/gather list 3864 * 3865 * Builds a microcode download IOA data list (IOADL). 3866 * 3867 **/ 3868 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd, 3869 struct ipr_sglist *sglist) 3870 { 3871 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3872 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 3873 struct scatterlist *scatterlist = sglist->scatterlist; 3874 struct scatterlist *sg; 3875 int i; 3876 3877 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 3878 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3879 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 3880 3881 ioarcb->ioadl_len = 3882 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 3883 for_each_sg(scatterlist, sg, ipr_cmd->dma_use_sg, i) { 3884 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE); 3885 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg)); 3886 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg)); 3887 } 3888 3889 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3890 } 3891 3892 /** 3893 * ipr_build_ucode_ioadl - Build a microcode download IOADL 3894 * @ipr_cmd: ipr command struct 3895 * @sglist: scatter/gather list 3896 * 3897 * Builds a microcode download IOA data list (IOADL). 3898 * 3899 **/ 3900 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, 3901 struct ipr_sglist *sglist) 3902 { 3903 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3904 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 3905 struct scatterlist *scatterlist = sglist->scatterlist; 3906 struct scatterlist *sg; 3907 int i; 3908 3909 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 3910 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3911 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 3912 3913 ioarcb->ioadl_len = 3914 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 3915 3916 for_each_sg(scatterlist, sg, ipr_cmd->dma_use_sg, i) { 3917 ioadl[i].flags_and_data_len = 3918 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(sg)); 3919 ioadl[i].address = 3920 cpu_to_be32(sg_dma_address(sg)); 3921 } 3922 3923 ioadl[i-1].flags_and_data_len |= 3924 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3925 } 3926 3927 /** 3928 * ipr_update_ioa_ucode - Update IOA's microcode 3929 * @ioa_cfg: ioa config struct 3930 * @sglist: scatter/gather list 3931 * 3932 * Initiate an adapter reset to update the IOA's microcode 3933 * 3934 * Return value: 3935 * 0 on success / -EIO on failure 3936 **/ 3937 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, 3938 struct ipr_sglist *sglist) 3939 { 3940 unsigned long lock_flags; 3941 3942 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3943 while (ioa_cfg->in_reset_reload) { 3944 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3945 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3946 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3947 } 3948 3949 if (ioa_cfg->ucode_sglist) { 3950 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3951 dev_err(&ioa_cfg->pdev->dev, 3952 "Microcode download already in progress\n"); 3953 return -EIO; 3954 } 3955 3956 sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev, 3957 sglist->scatterlist, sglist->num_sg, 3958 DMA_TO_DEVICE); 3959 3960 if (!sglist->num_dma_sg) { 3961 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3962 dev_err(&ioa_cfg->pdev->dev, 3963 "Failed to map microcode download buffer!\n"); 3964 return -EIO; 3965 } 3966 3967 ioa_cfg->ucode_sglist = sglist; 3968 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3969 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3970 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3971 3972 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3973 ioa_cfg->ucode_sglist = NULL; 3974 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3975 return 0; 3976 } 3977 3978 /** 3979 * ipr_store_update_fw - Update the firmware on the adapter 3980 * @dev: device struct 3981 * @attr: device attribute (unused) 3982 * @buf: buffer 3983 * @count: buffer size 3984 * 3985 * This function will update the firmware on the adapter. 3986 * 3987 * Return value: 3988 * count on success / other on failure 3989 **/ 3990 static ssize_t ipr_store_update_fw(struct device *dev, 3991 struct device_attribute *attr, 3992 const char *buf, size_t count) 3993 { 3994 struct Scsi_Host *shost = class_to_shost(dev); 3995 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3996 struct ipr_ucode_image_header *image_hdr; 3997 const struct firmware *fw_entry; 3998 struct ipr_sglist *sglist; 3999 char fname[100]; 4000 char *src; 4001 char *endline; 4002 int result, dnld_size; 4003 4004 if (!capable(CAP_SYS_ADMIN)) 4005 return -EACCES; 4006 4007 snprintf(fname, sizeof(fname), "%s", buf); 4008 4009 endline = strchr(fname, '\n'); 4010 if (endline) 4011 *endline = '\0'; 4012 4013 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 4014 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 4015 return -EIO; 4016 } 4017 4018 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 4019 4020 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 4021 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 4022 sglist = ipr_alloc_ucode_buffer(dnld_size); 4023 4024 if (!sglist) { 4025 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 4026 release_firmware(fw_entry); 4027 return -ENOMEM; 4028 } 4029 4030 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 4031 4032 if (result) { 4033 dev_err(&ioa_cfg->pdev->dev, 4034 "Microcode buffer copy to DMA buffer failed\n"); 4035 goto out; 4036 } 4037 4038 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n"); 4039 4040 result = ipr_update_ioa_ucode(ioa_cfg, sglist); 4041 4042 if (!result) 4043 result = count; 4044 out: 4045 ipr_free_ucode_buffer(sglist); 4046 release_firmware(fw_entry); 4047 return result; 4048 } 4049 4050 static struct device_attribute ipr_update_fw_attr = { 4051 .attr = { 4052 .name = "update_fw", 4053 .mode = S_IWUSR, 4054 }, 4055 .store = ipr_store_update_fw 4056 }; 4057 4058 /** 4059 * ipr_show_fw_type - Show the adapter's firmware type. 4060 * @dev: class device struct 4061 * @attr: device attribute (unused) 4062 * @buf: buffer 4063 * 4064 * Return value: 4065 * number of bytes printed to buffer 4066 **/ 4067 static ssize_t ipr_show_fw_type(struct device *dev, 4068 struct device_attribute *attr, char *buf) 4069 { 4070 struct Scsi_Host *shost = class_to_shost(dev); 4071 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4072 unsigned long lock_flags = 0; 4073 int len; 4074 4075 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4076 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64); 4077 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4078 return len; 4079 } 4080 4081 static struct device_attribute ipr_ioa_fw_type_attr = { 4082 .attr = { 4083 .name = "fw_type", 4084 .mode = S_IRUGO, 4085 }, 4086 .show = ipr_show_fw_type 4087 }; 4088 4089 static ssize_t ipr_read_async_err_log(struct file *filep, struct kobject *kobj, 4090 const struct bin_attribute *bin_attr, char *buf, 4091 loff_t off, size_t count) 4092 { 4093 struct device *cdev = kobj_to_dev(kobj); 4094 struct Scsi_Host *shost = class_to_shost(cdev); 4095 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4096 struct ipr_hostrcb *hostrcb; 4097 unsigned long lock_flags = 0; 4098 int ret; 4099 4100 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4101 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q, 4102 struct ipr_hostrcb, queue); 4103 if (!hostrcb) { 4104 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4105 return 0; 4106 } 4107 ret = memory_read_from_buffer(buf, count, &off, &hostrcb->hcam, 4108 sizeof(hostrcb->hcam)); 4109 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4110 return ret; 4111 } 4112 4113 static ssize_t ipr_next_async_err_log(struct file *filep, struct kobject *kobj, 4114 const struct bin_attribute *bin_attr, char *buf, 4115 loff_t off, size_t count) 4116 { 4117 struct device *cdev = kobj_to_dev(kobj); 4118 struct Scsi_Host *shost = class_to_shost(cdev); 4119 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4120 struct ipr_hostrcb *hostrcb; 4121 unsigned long lock_flags = 0; 4122 4123 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4124 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q, 4125 struct ipr_hostrcb, queue); 4126 if (!hostrcb) { 4127 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4128 return count; 4129 } 4130 4131 /* Reclaim hostrcb before exit */ 4132 list_move_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 4133 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4134 return count; 4135 } 4136 4137 static const struct bin_attribute ipr_ioa_async_err_log = { 4138 .attr = { 4139 .name = "async_err_log", 4140 .mode = S_IRUGO | S_IWUSR, 4141 }, 4142 .size = 0, 4143 .read = ipr_read_async_err_log, 4144 .write = ipr_next_async_err_log 4145 }; 4146 4147 static struct attribute *ipr_ioa_attrs[] = { 4148 &ipr_fw_version_attr.attr, 4149 &ipr_log_level_attr.attr, 4150 &ipr_diagnostics_attr.attr, 4151 &ipr_ioa_state_attr.attr, 4152 &ipr_ioa_reset_attr.attr, 4153 &ipr_update_fw_attr.attr, 4154 &ipr_ioa_fw_type_attr.attr, 4155 &ipr_iopoll_weight_attr.attr, 4156 NULL, 4157 }; 4158 4159 ATTRIBUTE_GROUPS(ipr_ioa); 4160 4161 #ifdef CONFIG_SCSI_IPR_DUMP 4162 /** 4163 * ipr_read_dump - Dump the adapter 4164 * @filp: open sysfs file 4165 * @kobj: kobject struct 4166 * @bin_attr: bin_attribute struct 4167 * @buf: buffer 4168 * @off: offset 4169 * @count: buffer size 4170 * 4171 * Return value: 4172 * number of bytes printed to buffer 4173 **/ 4174 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj, 4175 const struct bin_attribute *bin_attr, 4176 char *buf, loff_t off, size_t count) 4177 { 4178 struct device *cdev = kobj_to_dev(kobj); 4179 struct Scsi_Host *shost = class_to_shost(cdev); 4180 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4181 struct ipr_dump *dump; 4182 unsigned long lock_flags = 0; 4183 char *src; 4184 int len, sdt_end; 4185 size_t rc = count; 4186 4187 if (!capable(CAP_SYS_ADMIN)) 4188 return -EACCES; 4189 4190 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4191 dump = ioa_cfg->dump; 4192 4193 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 4194 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4195 return 0; 4196 } 4197 kref_get(&dump->kref); 4198 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4199 4200 if (off > dump->driver_dump.hdr.len) { 4201 kref_put(&dump->kref, ipr_release_dump); 4202 return 0; 4203 } 4204 4205 if (off + count > dump->driver_dump.hdr.len) { 4206 count = dump->driver_dump.hdr.len - off; 4207 rc = count; 4208 } 4209 4210 if (count && off < sizeof(dump->driver_dump)) { 4211 if (off + count > sizeof(dump->driver_dump)) 4212 len = sizeof(dump->driver_dump) - off; 4213 else 4214 len = count; 4215 src = (u8 *)&dump->driver_dump + off; 4216 memcpy(buf, src, len); 4217 buf += len; 4218 off += len; 4219 count -= len; 4220 } 4221 4222 off -= sizeof(dump->driver_dump); 4223 4224 if (ioa_cfg->sis64) 4225 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) + 4226 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) * 4227 sizeof(struct ipr_sdt_entry)); 4228 else 4229 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) + 4230 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry)); 4231 4232 if (count && off < sdt_end) { 4233 if (off + count > sdt_end) 4234 len = sdt_end - off; 4235 else 4236 len = count; 4237 src = (u8 *)&dump->ioa_dump + off; 4238 memcpy(buf, src, len); 4239 buf += len; 4240 off += len; 4241 count -= len; 4242 } 4243 4244 off -= sdt_end; 4245 4246 while (count) { 4247 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 4248 len = PAGE_ALIGN(off) - off; 4249 else 4250 len = count; 4251 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 4252 src += off & ~PAGE_MASK; 4253 memcpy(buf, src, len); 4254 buf += len; 4255 off += len; 4256 count -= len; 4257 } 4258 4259 kref_put(&dump->kref, ipr_release_dump); 4260 return rc; 4261 } 4262 4263 /** 4264 * ipr_alloc_dump - Prepare for adapter dump 4265 * @ioa_cfg: ioa config struct 4266 * 4267 * Return value: 4268 * 0 on success / other on failure 4269 **/ 4270 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 4271 { 4272 struct ipr_dump *dump; 4273 __be32 **ioa_data; 4274 unsigned long lock_flags = 0; 4275 4276 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); 4277 4278 if (!dump) { 4279 ipr_err("Dump memory allocation failed\n"); 4280 return -ENOMEM; 4281 } 4282 4283 if (ioa_cfg->sis64) 4284 ioa_data = vmalloc_array(IPR_FMT3_MAX_NUM_DUMP_PAGES, 4285 sizeof(__be32 *)); 4286 else 4287 ioa_data = vmalloc_array(IPR_FMT2_MAX_NUM_DUMP_PAGES, 4288 sizeof(__be32 *)); 4289 4290 if (!ioa_data) { 4291 ipr_err("Dump memory allocation failed\n"); 4292 kfree(dump); 4293 return -ENOMEM; 4294 } 4295 4296 dump->ioa_dump.ioa_data = ioa_data; 4297 4298 kref_init(&dump->kref); 4299 dump->ioa_cfg = ioa_cfg; 4300 4301 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4302 4303 if (INACTIVE != ioa_cfg->sdt_state) { 4304 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4305 vfree(dump->ioa_dump.ioa_data); 4306 kfree(dump); 4307 return 0; 4308 } 4309 4310 ioa_cfg->dump = dump; 4311 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 4312 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) { 4313 ioa_cfg->dump_taken = 1; 4314 schedule_work(&ioa_cfg->work_q); 4315 } 4316 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4317 4318 return 0; 4319 } 4320 4321 /** 4322 * ipr_free_dump - Free adapter dump memory 4323 * @ioa_cfg: ioa config struct 4324 * 4325 * Return value: 4326 * 0 on success / other on failure 4327 **/ 4328 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 4329 { 4330 struct ipr_dump *dump; 4331 unsigned long lock_flags = 0; 4332 4333 ENTER; 4334 4335 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4336 dump = ioa_cfg->dump; 4337 if (!dump) { 4338 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4339 return 0; 4340 } 4341 4342 ioa_cfg->dump = NULL; 4343 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4344 4345 kref_put(&dump->kref, ipr_release_dump); 4346 4347 LEAVE; 4348 return 0; 4349 } 4350 4351 /** 4352 * ipr_write_dump - Setup dump state of adapter 4353 * @filp: open sysfs file 4354 * @kobj: kobject struct 4355 * @bin_attr: bin_attribute struct 4356 * @buf: buffer 4357 * @off: offset 4358 * @count: buffer size 4359 * 4360 * Return value: 4361 * number of bytes printed to buffer 4362 **/ 4363 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj, 4364 const struct bin_attribute *bin_attr, 4365 char *buf, loff_t off, size_t count) 4366 { 4367 struct device *cdev = kobj_to_dev(kobj); 4368 struct Scsi_Host *shost = class_to_shost(cdev); 4369 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4370 int rc; 4371 4372 if (!capable(CAP_SYS_ADMIN)) 4373 return -EACCES; 4374 4375 if (buf[0] == '1') 4376 rc = ipr_alloc_dump(ioa_cfg); 4377 else if (buf[0] == '0') 4378 rc = ipr_free_dump(ioa_cfg); 4379 else 4380 return -EINVAL; 4381 4382 if (rc) 4383 return rc; 4384 else 4385 return count; 4386 } 4387 4388 static const struct bin_attribute ipr_dump_attr = { 4389 .attr = { 4390 .name = "dump", 4391 .mode = S_IRUSR | S_IWUSR, 4392 }, 4393 .size = 0, 4394 .read = ipr_read_dump, 4395 .write = ipr_write_dump 4396 }; 4397 #else 4398 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 4399 #endif 4400 4401 /** 4402 * ipr_change_queue_depth - Change the device's queue depth 4403 * @sdev: scsi device struct 4404 * @qdepth: depth to set 4405 * 4406 * Return value: 4407 * actual depth set 4408 **/ 4409 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) 4410 { 4411 scsi_change_queue_depth(sdev, qdepth); 4412 return sdev->queue_depth; 4413 } 4414 4415 /** 4416 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 4417 * @dev: device struct 4418 * @attr: device attribute structure 4419 * @buf: buffer 4420 * 4421 * Return value: 4422 * number of bytes printed to buffer 4423 **/ 4424 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) 4425 { 4426 struct scsi_device *sdev = to_scsi_device(dev); 4427 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4428 struct ipr_resource_entry *res; 4429 unsigned long lock_flags = 0; 4430 ssize_t len = -ENXIO; 4431 4432 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4433 res = (struct ipr_resource_entry *)sdev->hostdata; 4434 if (res) 4435 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle); 4436 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4437 return len; 4438 } 4439 4440 static struct device_attribute ipr_adapter_handle_attr = { 4441 .attr = { 4442 .name = "adapter_handle", 4443 .mode = S_IRUSR, 4444 }, 4445 .show = ipr_show_adapter_handle 4446 }; 4447 4448 /** 4449 * ipr_show_resource_path - Show the resource path or the resource address for 4450 * this device. 4451 * @dev: device struct 4452 * @attr: device attribute structure 4453 * @buf: buffer 4454 * 4455 * Return value: 4456 * number of bytes printed to buffer 4457 **/ 4458 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf) 4459 { 4460 struct scsi_device *sdev = to_scsi_device(dev); 4461 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4462 struct ipr_resource_entry *res; 4463 unsigned long lock_flags = 0; 4464 ssize_t len = -ENXIO; 4465 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4466 4467 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4468 res = (struct ipr_resource_entry *)sdev->hostdata; 4469 if (res && ioa_cfg->sis64) 4470 len = snprintf(buf, PAGE_SIZE, "%s\n", 4471 __ipr_format_res_path(res->res_path, buffer, 4472 sizeof(buffer))); 4473 else if (res) 4474 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no, 4475 res->bus, res->target, res->lun); 4476 4477 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4478 return len; 4479 } 4480 4481 static struct device_attribute ipr_resource_path_attr = { 4482 .attr = { 4483 .name = "resource_path", 4484 .mode = S_IRUGO, 4485 }, 4486 .show = ipr_show_resource_path 4487 }; 4488 4489 /** 4490 * ipr_show_device_id - Show the device_id for this device. 4491 * @dev: device struct 4492 * @attr: device attribute structure 4493 * @buf: buffer 4494 * 4495 * Return value: 4496 * number of bytes printed to buffer 4497 **/ 4498 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf) 4499 { 4500 struct scsi_device *sdev = to_scsi_device(dev); 4501 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4502 struct ipr_resource_entry *res; 4503 unsigned long lock_flags = 0; 4504 ssize_t len = -ENXIO; 4505 4506 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4507 res = (struct ipr_resource_entry *)sdev->hostdata; 4508 if (res && ioa_cfg->sis64) 4509 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id)); 4510 else if (res) 4511 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn); 4512 4513 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4514 return len; 4515 } 4516 4517 static struct device_attribute ipr_device_id_attr = { 4518 .attr = { 4519 .name = "device_id", 4520 .mode = S_IRUGO, 4521 }, 4522 .show = ipr_show_device_id 4523 }; 4524 4525 /** 4526 * ipr_show_resource_type - Show the resource type for this device. 4527 * @dev: device struct 4528 * @attr: device attribute structure 4529 * @buf: buffer 4530 * 4531 * Return value: 4532 * number of bytes printed to buffer 4533 **/ 4534 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf) 4535 { 4536 struct scsi_device *sdev = to_scsi_device(dev); 4537 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4538 struct ipr_resource_entry *res; 4539 unsigned long lock_flags = 0; 4540 ssize_t len = -ENXIO; 4541 4542 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4543 res = (struct ipr_resource_entry *)sdev->hostdata; 4544 4545 if (res) 4546 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type); 4547 4548 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4549 return len; 4550 } 4551 4552 static struct device_attribute ipr_resource_type_attr = { 4553 .attr = { 4554 .name = "resource_type", 4555 .mode = S_IRUGO, 4556 }, 4557 .show = ipr_show_resource_type 4558 }; 4559 4560 /** 4561 * ipr_show_raw_mode - Show the adapter's raw mode 4562 * @dev: class device struct 4563 * @attr: device attribute (unused) 4564 * @buf: buffer 4565 * 4566 * Return value: 4567 * number of bytes printed to buffer 4568 **/ 4569 static ssize_t ipr_show_raw_mode(struct device *dev, 4570 struct device_attribute *attr, char *buf) 4571 { 4572 struct scsi_device *sdev = to_scsi_device(dev); 4573 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4574 struct ipr_resource_entry *res; 4575 unsigned long lock_flags = 0; 4576 ssize_t len; 4577 4578 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4579 res = (struct ipr_resource_entry *)sdev->hostdata; 4580 if (res) 4581 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode); 4582 else 4583 len = -ENXIO; 4584 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4585 return len; 4586 } 4587 4588 /** 4589 * ipr_store_raw_mode - Change the adapter's raw mode 4590 * @dev: class device struct 4591 * @attr: device attribute (unused) 4592 * @buf: buffer 4593 * @count: buffer size 4594 * 4595 * Return value: 4596 * number of bytes printed to buffer 4597 **/ 4598 static ssize_t ipr_store_raw_mode(struct device *dev, 4599 struct device_attribute *attr, 4600 const char *buf, size_t count) 4601 { 4602 struct scsi_device *sdev = to_scsi_device(dev); 4603 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4604 struct ipr_resource_entry *res; 4605 unsigned long lock_flags = 0; 4606 ssize_t len; 4607 4608 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4609 res = (struct ipr_resource_entry *)sdev->hostdata; 4610 if (res) { 4611 if (ipr_is_af_dasd_device(res)) { 4612 res->raw_mode = simple_strtoul(buf, NULL, 10); 4613 len = strlen(buf); 4614 if (res->sdev) 4615 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n", 4616 res->raw_mode ? "enabled" : "disabled"); 4617 } else 4618 len = -EINVAL; 4619 } else 4620 len = -ENXIO; 4621 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4622 return len; 4623 } 4624 4625 static struct device_attribute ipr_raw_mode_attr = { 4626 .attr = { 4627 .name = "raw_mode", 4628 .mode = S_IRUGO | S_IWUSR, 4629 }, 4630 .show = ipr_show_raw_mode, 4631 .store = ipr_store_raw_mode 4632 }; 4633 4634 static struct attribute *ipr_dev_attrs[] = { 4635 &ipr_adapter_handle_attr.attr, 4636 &ipr_resource_path_attr.attr, 4637 &ipr_device_id_attr.attr, 4638 &ipr_resource_type_attr.attr, 4639 &ipr_raw_mode_attr.attr, 4640 NULL, 4641 }; 4642 4643 ATTRIBUTE_GROUPS(ipr_dev); 4644 4645 /** 4646 * ipr_biosparam - Return the HSC mapping 4647 * @sdev: scsi device struct 4648 * @unused: gendisk pointer 4649 * @capacity: capacity of the device 4650 * @parm: Array containing returned HSC values. 4651 * 4652 * This function generates the HSC parms that fdisk uses. 4653 * We want to make sure we return something that places partitions 4654 * on 4k boundaries for best performance with the IOA. 4655 * 4656 * Return value: 4657 * 0 on success 4658 **/ 4659 static int ipr_biosparam(struct scsi_device *sdev, 4660 struct gendisk *unused, 4661 sector_t capacity, int *parm) 4662 { 4663 int heads, sectors; 4664 sector_t cylinders; 4665 4666 heads = 128; 4667 sectors = 32; 4668 4669 cylinders = capacity; 4670 sector_div(cylinders, (128 * 32)); 4671 4672 /* return result */ 4673 parm[0] = heads; 4674 parm[1] = sectors; 4675 parm[2] = cylinders; 4676 4677 return 0; 4678 } 4679 4680 /** 4681 * ipr_find_starget - Find target based on bus/target. 4682 * @starget: scsi target struct 4683 * 4684 * Return value: 4685 * resource entry pointer if found / NULL if not found 4686 **/ 4687 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget) 4688 { 4689 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4690 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4691 struct ipr_resource_entry *res; 4692 4693 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4694 if ((res->bus == starget->channel) && 4695 (res->target == starget->id)) { 4696 return res; 4697 } 4698 } 4699 4700 return NULL; 4701 } 4702 4703 /** 4704 * ipr_target_destroy - Destroy a SCSI target 4705 * @starget: scsi target struct 4706 * 4707 **/ 4708 static void ipr_target_destroy(struct scsi_target *starget) 4709 { 4710 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4711 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4712 4713 if (ioa_cfg->sis64) { 4714 if (!ipr_find_starget(starget)) { 4715 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS) 4716 clear_bit(starget->id, ioa_cfg->array_ids); 4717 else if (starget->channel == IPR_VSET_VIRTUAL_BUS) 4718 clear_bit(starget->id, ioa_cfg->vset_ids); 4719 else if (starget->channel == 0) 4720 clear_bit(starget->id, ioa_cfg->target_ids); 4721 } 4722 } 4723 } 4724 4725 /** 4726 * ipr_find_sdev - Find device based on bus/target/lun. 4727 * @sdev: scsi device struct 4728 * 4729 * Return value: 4730 * resource entry pointer if found / NULL if not found 4731 **/ 4732 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev) 4733 { 4734 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4735 struct ipr_resource_entry *res; 4736 4737 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4738 if ((res->bus == sdev->channel) && 4739 (res->target == sdev->id) && 4740 (res->lun == sdev->lun)) 4741 return res; 4742 } 4743 4744 return NULL; 4745 } 4746 4747 /** 4748 * ipr_sdev_destroy - Unconfigure a SCSI device 4749 * @sdev: scsi device struct 4750 * 4751 * Return value: 4752 * nothing 4753 **/ 4754 static void ipr_sdev_destroy(struct scsi_device *sdev) 4755 { 4756 struct ipr_resource_entry *res; 4757 struct ipr_ioa_cfg *ioa_cfg; 4758 unsigned long lock_flags = 0; 4759 4760 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4761 4762 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4763 res = (struct ipr_resource_entry *) sdev->hostdata; 4764 if (res) { 4765 sdev->hostdata = NULL; 4766 res->sdev = NULL; 4767 } 4768 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4769 } 4770 4771 /** 4772 * ipr_sdev_configure - Configure a SCSI device 4773 * @sdev: scsi device struct 4774 * @lim: queue limits 4775 * 4776 * This function configures the specified scsi device. 4777 * 4778 * Return value: 4779 * 0 on success 4780 **/ 4781 static int ipr_sdev_configure(struct scsi_device *sdev, 4782 struct queue_limits *lim) 4783 { 4784 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4785 struct ipr_resource_entry *res; 4786 unsigned long lock_flags = 0; 4787 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4788 4789 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4790 res = sdev->hostdata; 4791 if (res) { 4792 if (ipr_is_af_dasd_device(res)) 4793 sdev->type = TYPE_RAID; 4794 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { 4795 sdev->scsi_level = 4; 4796 sdev->no_uld_attach = 1; 4797 } 4798 if (ipr_is_vset_device(res)) { 4799 sdev->scsi_level = SCSI_SPC_3; 4800 sdev->no_report_opcodes = 1; 4801 blk_queue_rq_timeout(sdev->request_queue, 4802 IPR_VSET_RW_TIMEOUT); 4803 lim->max_hw_sectors = IPR_VSET_MAX_SECTORS; 4804 } 4805 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4806 4807 if (ioa_cfg->sis64) 4808 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n", 4809 ipr_format_res_path(ioa_cfg, 4810 res->res_path, buffer, sizeof(buffer))); 4811 return 0; 4812 } 4813 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4814 return 0; 4815 } 4816 4817 /** 4818 * ipr_sdev_init - Prepare for commands to a device. 4819 * @sdev: scsi device struct 4820 * 4821 * This function saves a pointer to the resource entry 4822 * in the scsi device struct if the device exists. We 4823 * can then use this pointer in ipr_queuecommand when 4824 * handling new commands. 4825 * 4826 * Return value: 4827 * 0 on success / -ENXIO if device does not exist 4828 **/ 4829 static int ipr_sdev_init(struct scsi_device *sdev) 4830 { 4831 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4832 struct ipr_resource_entry *res; 4833 unsigned long lock_flags; 4834 int rc = -ENXIO; 4835 4836 sdev->hostdata = NULL; 4837 4838 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4839 4840 res = ipr_find_sdev(sdev); 4841 if (res) { 4842 res->sdev = sdev; 4843 res->add_to_ml = 0; 4844 res->in_erp = 0; 4845 sdev->hostdata = res; 4846 if (!ipr_is_naca_model(res)) 4847 res->needs_sync_complete = 1; 4848 rc = 0; 4849 if (ipr_is_gata(res)) { 4850 sdev_printk(KERN_ERR, sdev, "SATA devices are no longer " 4851 "supported by this driver. Skipping device.\n"); 4852 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4853 return -ENXIO; 4854 } 4855 } 4856 4857 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4858 4859 return rc; 4860 } 4861 4862 /** 4863 * ipr_match_lun - Match function for specified LUN 4864 * @ipr_cmd: ipr command struct 4865 * @device: device to match (sdev) 4866 * 4867 * Returns: 4868 * 1 if command matches sdev / 0 if command does not match sdev 4869 **/ 4870 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device) 4871 { 4872 if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device) 4873 return 1; 4874 return 0; 4875 } 4876 4877 /** 4878 * ipr_cmnd_is_free - Check if a command is free or not 4879 * @ipr_cmd: ipr command struct 4880 * 4881 * Returns: 4882 * true / false 4883 **/ 4884 static bool ipr_cmnd_is_free(struct ipr_cmnd *ipr_cmd) 4885 { 4886 struct ipr_cmnd *loop_cmd; 4887 4888 list_for_each_entry(loop_cmd, &ipr_cmd->hrrq->hrrq_free_q, queue) { 4889 if (loop_cmd == ipr_cmd) 4890 return true; 4891 } 4892 4893 return false; 4894 } 4895 4896 /** 4897 * ipr_wait_for_ops - Wait for matching commands to complete 4898 * @ioa_cfg: ioa config struct 4899 * @device: device to match (sdev) 4900 * @match: match function to use 4901 * 4902 * Returns: 4903 * SUCCESS / FAILED 4904 **/ 4905 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device, 4906 int (*match)(struct ipr_cmnd *, void *)) 4907 { 4908 struct ipr_cmnd *ipr_cmd; 4909 int wait, i; 4910 unsigned long flags; 4911 struct ipr_hrr_queue *hrrq; 4912 signed long timeout = IPR_ABORT_TASK_TIMEOUT; 4913 DECLARE_COMPLETION_ONSTACK(comp); 4914 4915 ENTER; 4916 do { 4917 wait = 0; 4918 4919 for_each_hrrq(hrrq, ioa_cfg) { 4920 spin_lock_irqsave(hrrq->lock, flags); 4921 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 4922 ipr_cmd = ioa_cfg->ipr_cmnd_list[i]; 4923 if (!ipr_cmnd_is_free(ipr_cmd)) { 4924 if (match(ipr_cmd, device)) { 4925 ipr_cmd->eh_comp = ∁ 4926 wait++; 4927 } 4928 } 4929 } 4930 spin_unlock_irqrestore(hrrq->lock, flags); 4931 } 4932 4933 if (wait) { 4934 timeout = wait_for_completion_timeout(&comp, timeout); 4935 4936 if (!timeout) { 4937 wait = 0; 4938 4939 for_each_hrrq(hrrq, ioa_cfg) { 4940 spin_lock_irqsave(hrrq->lock, flags); 4941 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 4942 ipr_cmd = ioa_cfg->ipr_cmnd_list[i]; 4943 if (!ipr_cmnd_is_free(ipr_cmd)) { 4944 if (match(ipr_cmd, device)) { 4945 ipr_cmd->eh_comp = NULL; 4946 wait++; 4947 } 4948 } 4949 } 4950 spin_unlock_irqrestore(hrrq->lock, flags); 4951 } 4952 4953 if (wait) 4954 dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n"); 4955 LEAVE; 4956 return wait ? FAILED : SUCCESS; 4957 } 4958 } 4959 } while (wait); 4960 4961 LEAVE; 4962 return SUCCESS; 4963 } 4964 4965 static int ipr_eh_host_reset(struct scsi_cmnd *cmd) 4966 { 4967 struct ipr_ioa_cfg *ioa_cfg; 4968 unsigned long lock_flags = 0; 4969 int rc = SUCCESS; 4970 4971 ENTER; 4972 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata; 4973 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4974 4975 if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) { 4976 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV); 4977 dev_err(&ioa_cfg->pdev->dev, 4978 "Adapter being reset as a result of error recovery.\n"); 4979 4980 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4981 ioa_cfg->sdt_state = GET_DUMP; 4982 } 4983 4984 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4985 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4986 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4987 4988 /* If we got hit with a host reset while we were already resetting 4989 the adapter for some reason, and the reset failed. */ 4990 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) { 4991 ipr_trace; 4992 rc = FAILED; 4993 } 4994 4995 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4996 LEAVE; 4997 return rc; 4998 } 4999 5000 /** 5001 * ipr_device_reset - Reset the device 5002 * @ioa_cfg: ioa config struct 5003 * @res: resource entry struct 5004 * 5005 * This function issues a device reset to the affected device. 5006 * If the device is a SCSI device, a LUN reset will be sent 5007 * to the device first. If that does not work, a target reset 5008 * will be sent. 5009 * 5010 * Return value: 5011 * 0 on success / non-zero on failure 5012 **/ 5013 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, 5014 struct ipr_resource_entry *res) 5015 { 5016 struct ipr_cmnd *ipr_cmd; 5017 struct ipr_ioarcb *ioarcb; 5018 struct ipr_cmd_pkt *cmd_pkt; 5019 u32 ioasc; 5020 5021 ENTER; 5022 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5023 ioarcb = &ipr_cmd->ioarcb; 5024 cmd_pkt = &ioarcb->cmd_pkt; 5025 5026 if (ipr_cmd->ioa_cfg->sis64) 5027 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb)); 5028 5029 ioarcb->res_handle = res->res_handle; 5030 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5031 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 5032 5033 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 5034 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5035 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 5036 5037 LEAVE; 5038 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0; 5039 } 5040 5041 /** 5042 * __ipr_eh_dev_reset - Reset the device 5043 * @scsi_cmd: scsi command struct 5044 * 5045 * This function issues a device reset to the affected device. 5046 * A LUN reset will be sent to the device first. If that does 5047 * not work, a target reset will be sent. 5048 * 5049 * Return value: 5050 * SUCCESS / FAILED 5051 **/ 5052 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd) 5053 { 5054 struct ipr_ioa_cfg *ioa_cfg; 5055 struct ipr_resource_entry *res; 5056 int rc = 0; 5057 5058 ENTER; 5059 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 5060 res = scsi_cmd->device->hostdata; 5061 5062 /* 5063 * If we are currently going through reset/reload, return failed. This will force the 5064 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 5065 * reset to complete 5066 */ 5067 if (ioa_cfg->in_reset_reload) 5068 return FAILED; 5069 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 5070 return FAILED; 5071 5072 res->resetting_device = 1; 5073 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); 5074 5075 rc = ipr_device_reset(ioa_cfg, res); 5076 res->resetting_device = 0; 5077 res->reset_occurred = 1; 5078 5079 LEAVE; 5080 return rc ? FAILED : SUCCESS; 5081 } 5082 5083 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd) 5084 { 5085 int rc; 5086 struct ipr_ioa_cfg *ioa_cfg; 5087 struct ipr_resource_entry *res; 5088 5089 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata; 5090 res = cmd->device->hostdata; 5091 5092 if (!res) 5093 return FAILED; 5094 5095 spin_lock_irq(cmd->device->host->host_lock); 5096 rc = __ipr_eh_dev_reset(cmd); 5097 spin_unlock_irq(cmd->device->host->host_lock); 5098 5099 if (rc == SUCCESS) 5100 rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun); 5101 5102 return rc; 5103 } 5104 5105 /** 5106 * ipr_bus_reset_done - Op done function for bus reset. 5107 * @ipr_cmd: ipr command struct 5108 * 5109 * This function is the op done function for a bus reset 5110 * 5111 * Return value: 5112 * none 5113 **/ 5114 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 5115 { 5116 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5117 struct ipr_resource_entry *res; 5118 5119 ENTER; 5120 if (!ioa_cfg->sis64) 5121 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 5122 if (res->res_handle == ipr_cmd->ioarcb.res_handle) { 5123 scsi_report_bus_reset(ioa_cfg->host, res->bus); 5124 break; 5125 } 5126 } 5127 5128 /* 5129 * If abort has not completed, indicate the reset has, else call the 5130 * abort's done function to wake the sleeping eh thread 5131 */ 5132 if (ipr_cmd->sibling->sibling) 5133 ipr_cmd->sibling->sibling = NULL; 5134 else 5135 ipr_cmd->sibling->done(ipr_cmd->sibling); 5136 5137 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 5138 LEAVE; 5139 } 5140 5141 /** 5142 * ipr_abort_timeout - An abort task has timed out 5143 * @t: Timer context used to fetch ipr command struct 5144 * 5145 * This function handles when an abort task times out. If this 5146 * happens we issue a bus reset since we have resources tied 5147 * up that must be freed before returning to the midlayer. 5148 * 5149 * Return value: 5150 * none 5151 **/ 5152 static void ipr_abort_timeout(struct timer_list *t) 5153 { 5154 struct ipr_cmnd *ipr_cmd = timer_container_of(ipr_cmd, t, timer); 5155 struct ipr_cmnd *reset_cmd; 5156 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5157 struct ipr_cmd_pkt *cmd_pkt; 5158 unsigned long lock_flags = 0; 5159 5160 ENTER; 5161 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5162 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 5163 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5164 return; 5165 } 5166 5167 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n"); 5168 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5169 ipr_cmd->sibling = reset_cmd; 5170 reset_cmd->sibling = ipr_cmd; 5171 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 5172 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 5173 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5174 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 5175 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 5176 5177 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 5178 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5179 LEAVE; 5180 } 5181 5182 /** 5183 * ipr_cancel_op - Cancel specified op 5184 * @scsi_cmd: scsi command struct 5185 * 5186 * This function cancels specified op. 5187 * 5188 * Return value: 5189 * SUCCESS / FAILED 5190 **/ 5191 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd) 5192 { 5193 struct ipr_cmnd *ipr_cmd; 5194 struct ipr_ioa_cfg *ioa_cfg; 5195 struct ipr_resource_entry *res; 5196 struct ipr_cmd_pkt *cmd_pkt; 5197 u32 ioasc; 5198 int i, op_found = 0; 5199 struct ipr_hrr_queue *hrrq; 5200 5201 ENTER; 5202 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 5203 res = scsi_cmd->device->hostdata; 5204 5205 /* If we are currently going through reset/reload, return failed. 5206 * This will force the mid-layer to call ipr_eh_host_reset, 5207 * which will then go to sleep and wait for the reset to complete 5208 */ 5209 if (ioa_cfg->in_reset_reload || 5210 ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 5211 return FAILED; 5212 if (!res) 5213 return FAILED; 5214 5215 /* 5216 * If we are aborting a timed out op, chances are that the timeout was caused 5217 * by a still not detected EEH error. In such cases, reading a register will 5218 * trigger the EEH recovery infrastructure. 5219 */ 5220 readl(ioa_cfg->regs.sense_interrupt_reg); 5221 5222 if (!ipr_is_gscsi(res)) 5223 return FAILED; 5224 5225 for_each_hrrq(hrrq, ioa_cfg) { 5226 spin_lock(&hrrq->_lock); 5227 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 5228 if (ioa_cfg->ipr_cmnd_list[i]->scsi_cmd == scsi_cmd) { 5229 if (!ipr_cmnd_is_free(ioa_cfg->ipr_cmnd_list[i])) { 5230 op_found = 1; 5231 break; 5232 } 5233 } 5234 } 5235 spin_unlock(&hrrq->_lock); 5236 } 5237 5238 if (!op_found) 5239 return SUCCESS; 5240 5241 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5242 ipr_cmd->ioarcb.res_handle = res->res_handle; 5243 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 5244 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5245 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 5246 ipr_cmd->u.sdev = scsi_cmd->device; 5247 5248 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n", 5249 scsi_cmd->cmnd[0]); 5250 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 5251 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5252 5253 /* 5254 * If the abort task timed out and we sent a bus reset, we will get 5255 * one the following responses to the abort 5256 */ 5257 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 5258 ioasc = 0; 5259 ipr_trace; 5260 } 5261 5262 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 5263 if (!ipr_is_naca_model(res)) 5264 res->needs_sync_complete = 1; 5265 5266 LEAVE; 5267 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS; 5268 } 5269 5270 /** 5271 * ipr_scan_finished - Report whether scan is done 5272 * @shost: scsi host struct 5273 * @elapsed_time: elapsed time 5274 * 5275 * Return value: 5276 * 0 if scan in progress / 1 if scan is complete 5277 **/ 5278 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time) 5279 { 5280 unsigned long lock_flags; 5281 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 5282 int rc = 0; 5283 5284 spin_lock_irqsave(shost->host_lock, lock_flags); 5285 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done) 5286 rc = 1; 5287 if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2)) 5288 rc = 1; 5289 spin_unlock_irqrestore(shost->host_lock, lock_flags); 5290 return rc; 5291 } 5292 5293 /** 5294 * ipr_eh_abort - Reset the host adapter 5295 * @scsi_cmd: scsi command struct 5296 * 5297 * Return value: 5298 * SUCCESS / FAILED 5299 **/ 5300 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd) 5301 { 5302 unsigned long flags; 5303 int rc; 5304 struct ipr_ioa_cfg *ioa_cfg; 5305 5306 ENTER; 5307 5308 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 5309 5310 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 5311 rc = ipr_cancel_op(scsi_cmd); 5312 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 5313 5314 if (rc == SUCCESS) 5315 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun); 5316 LEAVE; 5317 return rc; 5318 } 5319 5320 /** 5321 * ipr_handle_other_interrupt - Handle "other" interrupts 5322 * @ioa_cfg: ioa config struct 5323 * @int_reg: interrupt register 5324 * 5325 * Return value: 5326 * IRQ_NONE / IRQ_HANDLED 5327 **/ 5328 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 5329 u32 int_reg) 5330 { 5331 irqreturn_t rc = IRQ_HANDLED; 5332 u32 int_mask_reg; 5333 5334 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 5335 int_reg &= ~int_mask_reg; 5336 5337 /* If an interrupt on the adapter did not occur, ignore it. 5338 * Or in the case of SIS 64, check for a stage change interrupt. 5339 */ 5340 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) { 5341 if (ioa_cfg->sis64) { 5342 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 5343 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 5344 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) { 5345 5346 /* clear stage change */ 5347 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg); 5348 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 5349 list_del(&ioa_cfg->reset_cmd->queue); 5350 timer_delete(&ioa_cfg->reset_cmd->timer); 5351 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 5352 return IRQ_HANDLED; 5353 } 5354 } 5355 5356 return IRQ_NONE; 5357 } 5358 5359 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 5360 /* Mask the interrupt */ 5361 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 5362 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 5363 5364 list_del(&ioa_cfg->reset_cmd->queue); 5365 timer_delete(&ioa_cfg->reset_cmd->timer); 5366 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 5367 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) { 5368 if (ioa_cfg->clear_isr) { 5369 if (ipr_debug && printk_ratelimit()) 5370 dev_err(&ioa_cfg->pdev->dev, 5371 "Spurious interrupt detected. 0x%08X\n", int_reg); 5372 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32); 5373 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5374 return IRQ_NONE; 5375 } 5376 } else { 5377 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 5378 ioa_cfg->ioa_unit_checked = 1; 5379 else if (int_reg & IPR_PCII_NO_HOST_RRQ) 5380 dev_err(&ioa_cfg->pdev->dev, 5381 "No Host RRQ. 0x%08X\n", int_reg); 5382 else 5383 dev_err(&ioa_cfg->pdev->dev, 5384 "Permanent IOA failure. 0x%08X\n", int_reg); 5385 5386 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 5387 ioa_cfg->sdt_state = GET_DUMP; 5388 5389 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 5390 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5391 } 5392 5393 return rc; 5394 } 5395 5396 /** 5397 * ipr_isr_eh - Interrupt service routine error handler 5398 * @ioa_cfg: ioa config struct 5399 * @msg: message to log 5400 * @number: various meanings depending on the caller/message 5401 * 5402 * Return value: 5403 * none 5404 **/ 5405 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number) 5406 { 5407 ioa_cfg->errors_logged++; 5408 dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number); 5409 5410 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 5411 ioa_cfg->sdt_state = GET_DUMP; 5412 5413 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5414 } 5415 5416 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget, 5417 struct list_head *doneq) 5418 { 5419 u32 ioasc; 5420 u16 cmd_index; 5421 struct ipr_cmnd *ipr_cmd; 5422 struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg; 5423 int num_hrrq = 0; 5424 5425 /* If interrupts are disabled, ignore the interrupt */ 5426 if (!hrr_queue->allow_interrupts) 5427 return 0; 5428 5429 while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5430 hrr_queue->toggle_bit) { 5431 5432 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) & 5433 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> 5434 IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 5435 5436 if (unlikely(cmd_index > hrr_queue->max_cmd_id || 5437 cmd_index < hrr_queue->min_cmd_id)) { 5438 ipr_isr_eh(ioa_cfg, 5439 "Invalid response handle from IOA: ", 5440 cmd_index); 5441 break; 5442 } 5443 5444 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 5445 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5446 5447 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 5448 5449 list_move_tail(&ipr_cmd->queue, doneq); 5450 5451 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) { 5452 hrr_queue->hrrq_curr++; 5453 } else { 5454 hrr_queue->hrrq_curr = hrr_queue->hrrq_start; 5455 hrr_queue->toggle_bit ^= 1u; 5456 } 5457 num_hrrq++; 5458 if (budget > 0 && num_hrrq >= budget) 5459 break; 5460 } 5461 5462 return num_hrrq; 5463 } 5464 5465 static int ipr_iopoll(struct irq_poll *iop, int budget) 5466 { 5467 struct ipr_hrr_queue *hrrq; 5468 struct ipr_cmnd *ipr_cmd, *temp; 5469 unsigned long hrrq_flags; 5470 int completed_ops; 5471 LIST_HEAD(doneq); 5472 5473 hrrq = container_of(iop, struct ipr_hrr_queue, iopoll); 5474 5475 spin_lock_irqsave(hrrq->lock, hrrq_flags); 5476 completed_ops = ipr_process_hrrq(hrrq, budget, &doneq); 5477 5478 if (completed_ops < budget) 5479 irq_poll_complete(iop); 5480 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5481 5482 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) { 5483 list_del(&ipr_cmd->queue); 5484 timer_delete(&ipr_cmd->timer); 5485 ipr_cmd->fast_done(ipr_cmd); 5486 } 5487 5488 return completed_ops; 5489 } 5490 5491 /** 5492 * ipr_isr - Interrupt service routine 5493 * @irq: irq number 5494 * @devp: pointer to ioa config struct 5495 * 5496 * Return value: 5497 * IRQ_NONE / IRQ_HANDLED 5498 **/ 5499 static irqreturn_t ipr_isr(int irq, void *devp) 5500 { 5501 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp; 5502 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg; 5503 unsigned long hrrq_flags = 0; 5504 u32 int_reg = 0; 5505 int num_hrrq = 0; 5506 int irq_none = 0; 5507 struct ipr_cmnd *ipr_cmd, *temp; 5508 irqreturn_t rc = IRQ_NONE; 5509 LIST_HEAD(doneq); 5510 5511 spin_lock_irqsave(hrrq->lock, hrrq_flags); 5512 /* If interrupts are disabled, ignore the interrupt */ 5513 if (!hrrq->allow_interrupts) { 5514 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5515 return IRQ_NONE; 5516 } 5517 5518 while (1) { 5519 if (ipr_process_hrrq(hrrq, -1, &doneq)) { 5520 rc = IRQ_HANDLED; 5521 5522 if (!ioa_cfg->clear_isr) 5523 break; 5524 5525 /* Clear the PCI interrupt */ 5526 num_hrrq = 0; 5527 do { 5528 writel(IPR_PCII_HRRQ_UPDATED, 5529 ioa_cfg->regs.clr_interrupt_reg32); 5530 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5531 } while (int_reg & IPR_PCII_HRRQ_UPDATED && 5532 num_hrrq++ < IPR_MAX_HRRQ_RETRIES); 5533 5534 } else if (rc == IRQ_NONE && irq_none == 0) { 5535 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5536 irq_none++; 5537 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES && 5538 int_reg & IPR_PCII_HRRQ_UPDATED) { 5539 ipr_isr_eh(ioa_cfg, 5540 "Error clearing HRRQ: ", num_hrrq); 5541 rc = IRQ_HANDLED; 5542 break; 5543 } else 5544 break; 5545 } 5546 5547 if (unlikely(rc == IRQ_NONE)) 5548 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 5549 5550 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5551 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) { 5552 list_del(&ipr_cmd->queue); 5553 timer_delete(&ipr_cmd->timer); 5554 ipr_cmd->fast_done(ipr_cmd); 5555 } 5556 return rc; 5557 } 5558 5559 /** 5560 * ipr_isr_mhrrq - Interrupt service routine 5561 * @irq: irq number 5562 * @devp: pointer to ioa config struct 5563 * 5564 * Return value: 5565 * IRQ_NONE / IRQ_HANDLED 5566 **/ 5567 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp) 5568 { 5569 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp; 5570 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg; 5571 unsigned long hrrq_flags = 0; 5572 struct ipr_cmnd *ipr_cmd, *temp; 5573 irqreturn_t rc = IRQ_NONE; 5574 LIST_HEAD(doneq); 5575 5576 spin_lock_irqsave(hrrq->lock, hrrq_flags); 5577 5578 /* If interrupts are disabled, ignore the interrupt */ 5579 if (!hrrq->allow_interrupts) { 5580 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5581 return IRQ_NONE; 5582 } 5583 5584 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 5585 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5586 hrrq->toggle_bit) { 5587 irq_poll_sched(&hrrq->iopoll); 5588 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5589 return IRQ_HANDLED; 5590 } 5591 } else { 5592 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5593 hrrq->toggle_bit) 5594 5595 if (ipr_process_hrrq(hrrq, -1, &doneq)) 5596 rc = IRQ_HANDLED; 5597 } 5598 5599 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5600 5601 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) { 5602 list_del(&ipr_cmd->queue); 5603 timer_delete(&ipr_cmd->timer); 5604 ipr_cmd->fast_done(ipr_cmd); 5605 } 5606 return rc; 5607 } 5608 5609 /** 5610 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer 5611 * @ioa_cfg: ioa config struct 5612 * @ipr_cmd: ipr command struct 5613 * 5614 * Return value: 5615 * 0 on success / -1 on failure 5616 **/ 5617 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg, 5618 struct ipr_cmnd *ipr_cmd) 5619 { 5620 int i, nseg; 5621 struct scatterlist *sg; 5622 u32 length; 5623 u32 ioadl_flags = 0; 5624 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5625 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5626 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 5627 5628 length = scsi_bufflen(scsi_cmd); 5629 if (!length) 5630 return 0; 5631 5632 nseg = scsi_dma_map(scsi_cmd); 5633 if (nseg < 0) { 5634 if (printk_ratelimit()) 5635 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n"); 5636 return -1; 5637 } 5638 5639 ipr_cmd->dma_use_sg = nseg; 5640 5641 ioarcb->data_transfer_length = cpu_to_be32(length); 5642 ioarcb->ioadl_len = 5643 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 5644 5645 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 5646 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5647 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5648 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) 5649 ioadl_flags = IPR_IOADL_FLAGS_READ; 5650 5651 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 5652 ioadl64[i].flags = cpu_to_be32(ioadl_flags); 5653 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg)); 5654 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg)); 5655 } 5656 5657 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5658 return 0; 5659 } 5660 5661 /** 5662 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 5663 * @ioa_cfg: ioa config struct 5664 * @ipr_cmd: ipr command struct 5665 * 5666 * Return value: 5667 * 0 on success / -1 on failure 5668 **/ 5669 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 5670 struct ipr_cmnd *ipr_cmd) 5671 { 5672 int i, nseg; 5673 struct scatterlist *sg; 5674 u32 length; 5675 u32 ioadl_flags = 0; 5676 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5677 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5678 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 5679 5680 length = scsi_bufflen(scsi_cmd); 5681 if (!length) 5682 return 0; 5683 5684 nseg = scsi_dma_map(scsi_cmd); 5685 if (nseg < 0) { 5686 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n"); 5687 return -1; 5688 } 5689 5690 ipr_cmd->dma_use_sg = nseg; 5691 5692 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 5693 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5694 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5695 ioarcb->data_transfer_length = cpu_to_be32(length); 5696 ioarcb->ioadl_len = 5697 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5698 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 5699 ioadl_flags = IPR_IOADL_FLAGS_READ; 5700 ioarcb->read_data_transfer_length = cpu_to_be32(length); 5701 ioarcb->read_ioadl_len = 5702 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5703 } 5704 5705 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) { 5706 ioadl = ioarcb->u.add_data.u.ioadl; 5707 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) + 5708 offsetof(struct ipr_ioarcb, u.add_data)); 5709 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 5710 } 5711 5712 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 5713 ioadl[i].flags_and_data_len = 5714 cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 5715 ioadl[i].address = cpu_to_be32(sg_dma_address(sg)); 5716 } 5717 5718 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5719 return 0; 5720 } 5721 5722 /** 5723 * __ipr_erp_done - Process completion of ERP for a device 5724 * @ipr_cmd: ipr command struct 5725 * 5726 * This function copies the sense buffer into the scsi_cmd 5727 * struct and pushes the scsi_done function. 5728 * 5729 * Return value: 5730 * nothing 5731 **/ 5732 static void __ipr_erp_done(struct ipr_cmnd *ipr_cmd) 5733 { 5734 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5735 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 5736 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5737 5738 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 5739 scsi_cmd->result |= (DID_ERROR << 16); 5740 scmd_printk(KERN_ERR, scsi_cmd, 5741 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 5742 } else { 5743 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 5744 SCSI_SENSE_BUFFERSIZE); 5745 } 5746 5747 if (res) { 5748 if (!ipr_is_naca_model(res)) 5749 res->needs_sync_complete = 1; 5750 res->in_erp = 0; 5751 } 5752 scsi_dma_unmap(ipr_cmd->scsi_cmd); 5753 scsi_done(scsi_cmd); 5754 if (ipr_cmd->eh_comp) 5755 complete(ipr_cmd->eh_comp); 5756 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 5757 } 5758 5759 /** 5760 * ipr_erp_done - Process completion of ERP for a device 5761 * @ipr_cmd: ipr command struct 5762 * 5763 * This function copies the sense buffer into the scsi_cmd 5764 * struct and pushes the scsi_done function. 5765 * 5766 * Return value: 5767 * nothing 5768 **/ 5769 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 5770 { 5771 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq; 5772 unsigned long hrrq_flags; 5773 5774 spin_lock_irqsave(&hrrq->_lock, hrrq_flags); 5775 __ipr_erp_done(ipr_cmd); 5776 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags); 5777 } 5778 5779 /** 5780 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 5781 * @ipr_cmd: ipr command struct 5782 * 5783 * Return value: 5784 * none 5785 **/ 5786 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 5787 { 5788 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5789 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5790 dma_addr_t dma_addr = ipr_cmd->dma_addr; 5791 5792 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 5793 ioarcb->data_transfer_length = 0; 5794 ioarcb->read_data_transfer_length = 0; 5795 ioarcb->ioadl_len = 0; 5796 ioarcb->read_ioadl_len = 0; 5797 ioasa->hdr.ioasc = 0; 5798 ioasa->hdr.residual_data_len = 0; 5799 5800 if (ipr_cmd->ioa_cfg->sis64) 5801 ioarcb->u.sis64_addr_data.data_ioadl_addr = 5802 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 5803 else { 5804 ioarcb->write_ioadl_addr = 5805 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 5806 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 5807 } 5808 } 5809 5810 /** 5811 * __ipr_erp_request_sense - Send request sense to a device 5812 * @ipr_cmd: ipr command struct 5813 * 5814 * This function sends a request sense to a device as a result 5815 * of a check condition. 5816 * 5817 * Return value: 5818 * nothing 5819 **/ 5820 static void __ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 5821 { 5822 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 5823 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5824 5825 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 5826 __ipr_erp_done(ipr_cmd); 5827 return; 5828 } 5829 5830 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 5831 5832 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 5833 cmd_pkt->cdb[0] = REQUEST_SENSE; 5834 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 5835 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 5836 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 5837 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 5838 5839 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma, 5840 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST); 5841 5842 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 5843 IPR_REQUEST_SENSE_TIMEOUT * 2); 5844 } 5845 5846 /** 5847 * ipr_erp_request_sense - Send request sense to a device 5848 * @ipr_cmd: ipr command struct 5849 * 5850 * This function sends a request sense to a device as a result 5851 * of a check condition. 5852 * 5853 * Return value: 5854 * nothing 5855 **/ 5856 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 5857 { 5858 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq; 5859 unsigned long hrrq_flags; 5860 5861 spin_lock_irqsave(&hrrq->_lock, hrrq_flags); 5862 __ipr_erp_request_sense(ipr_cmd); 5863 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags); 5864 } 5865 5866 /** 5867 * ipr_erp_cancel_all - Send cancel all to a device 5868 * @ipr_cmd: ipr command struct 5869 * 5870 * This function sends a cancel all to a device to clear the 5871 * queue. If we are running TCQ on the device, QERR is set to 1, 5872 * which means all outstanding ops have been dropped on the floor. 5873 * Cancel all will return them to us. 5874 * 5875 * Return value: 5876 * nothing 5877 **/ 5878 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 5879 { 5880 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5881 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 5882 struct ipr_cmd_pkt *cmd_pkt; 5883 5884 res->in_erp = 1; 5885 5886 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 5887 5888 if (!scsi_cmd->device->simple_tags) { 5889 __ipr_erp_request_sense(ipr_cmd); 5890 return; 5891 } 5892 5893 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 5894 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5895 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 5896 5897 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 5898 IPR_CANCEL_ALL_TIMEOUT); 5899 } 5900 5901 /** 5902 * ipr_dump_ioasa - Dump contents of IOASA 5903 * @ioa_cfg: ioa config struct 5904 * @ipr_cmd: ipr command struct 5905 * @res: resource entry struct 5906 * 5907 * This function is invoked by the interrupt handler when ops 5908 * fail. It will log the IOASA if appropriate. Only called 5909 * for GPDD ops. 5910 * 5911 * Return value: 5912 * none 5913 **/ 5914 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 5915 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res) 5916 { 5917 int i; 5918 u16 data_len; 5919 u32 ioasc, fd_ioasc; 5920 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5921 __be32 *ioasa_data = (__be32 *)ioasa; 5922 int error_index; 5923 5924 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK; 5925 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK; 5926 5927 if (0 == ioasc) 5928 return; 5929 5930 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 5931 return; 5932 5933 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc) 5934 error_index = ipr_get_error(fd_ioasc); 5935 else 5936 error_index = ipr_get_error(ioasc); 5937 5938 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 5939 /* Don't log an error if the IOA already logged one */ 5940 if (ioasa->hdr.ilid != 0) 5941 return; 5942 5943 if (!ipr_is_gscsi(res)) 5944 return; 5945 5946 if (ipr_error_table[error_index].log_ioasa == 0) 5947 return; 5948 } 5949 5950 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error); 5951 5952 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len); 5953 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len) 5954 data_len = sizeof(struct ipr_ioasa64); 5955 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len) 5956 data_len = sizeof(struct ipr_ioasa); 5957 5958 ipr_err("IOASA Dump:\n"); 5959 5960 for (i = 0; i < data_len / 4; i += 4) { 5961 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 5962 be32_to_cpu(ioasa_data[i]), 5963 be32_to_cpu(ioasa_data[i+1]), 5964 be32_to_cpu(ioasa_data[i+2]), 5965 be32_to_cpu(ioasa_data[i+3])); 5966 } 5967 } 5968 5969 /** 5970 * ipr_gen_sense - Generate SCSI sense data from an IOASA 5971 * @ipr_cmd: ipr command struct 5972 * 5973 * Return value: 5974 * none 5975 **/ 5976 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 5977 { 5978 u32 failing_lba; 5979 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 5980 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 5981 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5982 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc); 5983 5984 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 5985 5986 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 5987 return; 5988 5989 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 5990 5991 if (ipr_is_vset_device(res) && 5992 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 5993 ioasa->u.vset.failing_lba_hi != 0) { 5994 sense_buf[0] = 0x72; 5995 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 5996 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 5997 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 5998 5999 sense_buf[7] = 12; 6000 sense_buf[8] = 0; 6001 sense_buf[9] = 0x0A; 6002 sense_buf[10] = 0x80; 6003 6004 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 6005 6006 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 6007 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 6008 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 6009 sense_buf[15] = failing_lba & 0x000000ff; 6010 6011 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 6012 6013 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 6014 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 6015 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 6016 sense_buf[19] = failing_lba & 0x000000ff; 6017 } else { 6018 sense_buf[0] = 0x70; 6019 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 6020 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 6021 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 6022 6023 /* Illegal request */ 6024 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 6025 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 6026 sense_buf[7] = 10; /* additional length */ 6027 6028 /* IOARCB was in error */ 6029 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 6030 sense_buf[15] = 0xC0; 6031 else /* Parameter data was invalid */ 6032 sense_buf[15] = 0x80; 6033 6034 sense_buf[16] = 6035 ((IPR_FIELD_POINTER_MASK & 6036 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff; 6037 sense_buf[17] = 6038 (IPR_FIELD_POINTER_MASK & 6039 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff; 6040 } else { 6041 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 6042 if (ipr_is_vset_device(res)) 6043 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 6044 else 6045 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 6046 6047 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 6048 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 6049 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 6050 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 6051 sense_buf[6] = failing_lba & 0x000000ff; 6052 } 6053 6054 sense_buf[7] = 6; /* additional length */ 6055 } 6056 } 6057 } 6058 6059 /** 6060 * ipr_get_autosense - Copy autosense data to sense buffer 6061 * @ipr_cmd: ipr command struct 6062 * 6063 * This function copies the autosense buffer to the buffer 6064 * in the scsi_cmd, if there is autosense available. 6065 * 6066 * Return value: 6067 * 1 if autosense was available / 0 if not 6068 **/ 6069 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) 6070 { 6071 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 6072 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64; 6073 6074 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0) 6075 return 0; 6076 6077 if (ipr_cmd->ioa_cfg->sis64) 6078 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data, 6079 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len), 6080 SCSI_SENSE_BUFFERSIZE)); 6081 else 6082 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, 6083 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), 6084 SCSI_SENSE_BUFFERSIZE)); 6085 return 1; 6086 } 6087 6088 /** 6089 * ipr_erp_start - Process an error response for a SCSI op 6090 * @ioa_cfg: ioa config struct 6091 * @ipr_cmd: ipr command struct 6092 * 6093 * This function determines whether or not to initiate ERP 6094 * on the affected device. 6095 * 6096 * Return value: 6097 * nothing 6098 **/ 6099 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 6100 struct ipr_cmnd *ipr_cmd) 6101 { 6102 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6103 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 6104 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6105 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK; 6106 6107 if (!res) { 6108 __ipr_scsi_eh_done(ipr_cmd); 6109 return; 6110 } 6111 6112 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS) 6113 ipr_gen_sense(ipr_cmd); 6114 6115 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 6116 6117 switch (masked_ioasc) { 6118 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 6119 if (ipr_is_naca_model(res)) 6120 scsi_cmd->result |= (DID_ABORT << 16); 6121 else 6122 scsi_cmd->result |= (DID_IMM_RETRY << 16); 6123 break; 6124 case IPR_IOASC_IR_RESOURCE_HANDLE: 6125 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: 6126 scsi_cmd->result |= (DID_NO_CONNECT << 16); 6127 break; 6128 case IPR_IOASC_HW_SEL_TIMEOUT: 6129 scsi_cmd->result |= (DID_NO_CONNECT << 16); 6130 if (!ipr_is_naca_model(res)) 6131 res->needs_sync_complete = 1; 6132 break; 6133 case IPR_IOASC_SYNC_REQUIRED: 6134 if (!res->in_erp) 6135 res->needs_sync_complete = 1; 6136 scsi_cmd->result |= (DID_IMM_RETRY << 16); 6137 break; 6138 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 6139 case IPR_IOASA_IR_DUAL_IOA_DISABLED: 6140 /* 6141 * exception: do not set DID_PASSTHROUGH on CHECK CONDITION 6142 * so SCSI mid-layer and upper layers handle it accordingly. 6143 */ 6144 if (scsi_cmd->result != SAM_STAT_CHECK_CONDITION) 6145 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 6146 break; 6147 case IPR_IOASC_BUS_WAS_RESET: 6148 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 6149 /* 6150 * Report the bus reset and ask for a retry. The device 6151 * will give CC/UA the next command. 6152 */ 6153 if (!res->resetting_device) 6154 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 6155 scsi_cmd->result |= (DID_ERROR << 16); 6156 if (!ipr_is_naca_model(res)) 6157 res->needs_sync_complete = 1; 6158 break; 6159 case IPR_IOASC_HW_DEV_BUS_STATUS: 6160 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 6161 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 6162 if (!ipr_get_autosense(ipr_cmd)) { 6163 if (!ipr_is_naca_model(res)) { 6164 ipr_erp_cancel_all(ipr_cmd); 6165 return; 6166 } 6167 } 6168 } 6169 if (!ipr_is_naca_model(res)) 6170 res->needs_sync_complete = 1; 6171 break; 6172 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 6173 break; 6174 case IPR_IOASC_IR_NON_OPTIMIZED: 6175 if (res->raw_mode) { 6176 res->raw_mode = 0; 6177 scsi_cmd->result |= (DID_IMM_RETRY << 16); 6178 } else 6179 scsi_cmd->result |= (DID_ERROR << 16); 6180 break; 6181 default: 6182 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 6183 scsi_cmd->result |= (DID_ERROR << 16); 6184 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) 6185 res->needs_sync_complete = 1; 6186 break; 6187 } 6188 6189 scsi_dma_unmap(ipr_cmd->scsi_cmd); 6190 scsi_done(scsi_cmd); 6191 if (ipr_cmd->eh_comp) 6192 complete(ipr_cmd->eh_comp); 6193 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6194 } 6195 6196 /** 6197 * ipr_scsi_done - mid-layer done function 6198 * @ipr_cmd: ipr command struct 6199 * 6200 * This function is invoked by the interrupt handler for 6201 * ops generated by the SCSI mid-layer 6202 * 6203 * Return value: 6204 * none 6205 **/ 6206 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 6207 { 6208 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6209 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6210 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6211 unsigned long lock_flags; 6212 6213 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len)); 6214 6215 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 6216 scsi_dma_unmap(scsi_cmd); 6217 6218 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags); 6219 scsi_done(scsi_cmd); 6220 if (ipr_cmd->eh_comp) 6221 complete(ipr_cmd->eh_comp); 6222 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6223 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags); 6224 } else { 6225 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6226 spin_lock(&ipr_cmd->hrrq->_lock); 6227 ipr_erp_start(ioa_cfg, ipr_cmd); 6228 spin_unlock(&ipr_cmd->hrrq->_lock); 6229 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6230 } 6231 } 6232 6233 /** 6234 * ipr_queuecommand - Queue a mid-layer request 6235 * @shost: scsi host struct 6236 * @scsi_cmd: scsi command struct 6237 * 6238 * This function queues a request generated by the mid-layer. 6239 * 6240 * Return value: 6241 * 0 on success 6242 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 6243 * SCSI_MLQUEUE_HOST_BUSY if host is busy 6244 **/ 6245 static int ipr_queuecommand(struct Scsi_Host *shost, 6246 struct scsi_cmnd *scsi_cmd) 6247 { 6248 struct ipr_ioa_cfg *ioa_cfg; 6249 struct ipr_resource_entry *res; 6250 struct ipr_ioarcb *ioarcb; 6251 struct ipr_cmnd *ipr_cmd; 6252 unsigned long hrrq_flags; 6253 int rc; 6254 struct ipr_hrr_queue *hrrq; 6255 int hrrq_id; 6256 6257 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 6258 6259 scsi_cmd->result = (DID_OK << 16); 6260 res = scsi_cmd->device->hostdata; 6261 6262 hrrq_id = ipr_get_hrrq_index(ioa_cfg); 6263 hrrq = &ioa_cfg->hrrq[hrrq_id]; 6264 6265 spin_lock_irqsave(hrrq->lock, hrrq_flags); 6266 /* 6267 * We are currently blocking all devices due to a host reset 6268 * We have told the host to stop giving us new requests, but 6269 * ERP ops don't count. FIXME 6270 */ 6271 if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) { 6272 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6273 return SCSI_MLQUEUE_HOST_BUSY; 6274 } 6275 6276 /* 6277 * FIXME - Create scsi_set_host_offline interface 6278 * and the ioa_is_dead check can be removed 6279 */ 6280 if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) { 6281 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6282 goto err_nodev; 6283 } 6284 6285 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq); 6286 if (ipr_cmd == NULL) { 6287 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6288 return SCSI_MLQUEUE_HOST_BUSY; 6289 } 6290 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6291 6292 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done); 6293 ioarcb = &ipr_cmd->ioarcb; 6294 6295 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 6296 ipr_cmd->scsi_cmd = scsi_cmd; 6297 ipr_cmd->done = ipr_scsi_eh_done; 6298 6299 if (ipr_is_gscsi(res)) { 6300 if (scsi_cmd->underflow == 0) 6301 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6302 6303 if (res->reset_occurred) { 6304 res->reset_occurred = 0; 6305 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 6306 } 6307 } 6308 6309 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 6310 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 6311 6312 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 6313 if (scsi_cmd->flags & SCMD_TAGGED) 6314 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK; 6315 else 6316 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK; 6317 } 6318 6319 if (scsi_cmd->cmnd[0] >= 0xC0 && 6320 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) { 6321 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6322 } 6323 if (res->raw_mode && ipr_is_af_dasd_device(res)) { 6324 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE; 6325 6326 if (scsi_cmd->underflow == 0) 6327 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6328 } 6329 6330 if (ioa_cfg->sis64) 6331 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd); 6332 else 6333 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 6334 6335 spin_lock_irqsave(hrrq->lock, hrrq_flags); 6336 if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) { 6337 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q); 6338 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6339 if (!rc) 6340 scsi_dma_unmap(scsi_cmd); 6341 return SCSI_MLQUEUE_HOST_BUSY; 6342 } 6343 6344 if (unlikely(hrrq->ioa_is_dead)) { 6345 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q); 6346 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6347 scsi_dma_unmap(scsi_cmd); 6348 goto err_nodev; 6349 } 6350 6351 ioarcb->res_handle = res->res_handle; 6352 if (res->needs_sync_complete) { 6353 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 6354 res->needs_sync_complete = 0; 6355 } 6356 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q); 6357 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res)); 6358 ipr_send_command(ipr_cmd); 6359 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6360 return 0; 6361 6362 err_nodev: 6363 spin_lock_irqsave(hrrq->lock, hrrq_flags); 6364 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 6365 scsi_cmd->result = (DID_NO_CONNECT << 16); 6366 scsi_done(scsi_cmd); 6367 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6368 return 0; 6369 } 6370 6371 /** 6372 * ipr_ioa_info - Get information about the card/driver 6373 * @host: scsi host struct 6374 * 6375 * Return value: 6376 * pointer to buffer with description string 6377 **/ 6378 static const char *ipr_ioa_info(struct Scsi_Host *host) 6379 { 6380 static char buffer[512]; 6381 struct ipr_ioa_cfg *ioa_cfg; 6382 unsigned long lock_flags = 0; 6383 6384 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 6385 6386 spin_lock_irqsave(host->host_lock, lock_flags); 6387 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 6388 spin_unlock_irqrestore(host->host_lock, lock_flags); 6389 6390 return buffer; 6391 } 6392 6393 static const struct scsi_host_template driver_template = { 6394 .module = THIS_MODULE, 6395 .name = "IPR", 6396 .info = ipr_ioa_info, 6397 .queuecommand = ipr_queuecommand, 6398 .eh_abort_handler = ipr_eh_abort, 6399 .eh_device_reset_handler = ipr_eh_dev_reset, 6400 .eh_host_reset_handler = ipr_eh_host_reset, 6401 .sdev_init = ipr_sdev_init, 6402 .sdev_configure = ipr_sdev_configure, 6403 .sdev_destroy = ipr_sdev_destroy, 6404 .scan_finished = ipr_scan_finished, 6405 .target_destroy = ipr_target_destroy, 6406 .change_queue_depth = ipr_change_queue_depth, 6407 .bios_param = ipr_biosparam, 6408 .can_queue = IPR_MAX_COMMANDS, 6409 .this_id = -1, 6410 .sg_tablesize = IPR_MAX_SGLIST, 6411 .max_sectors = IPR_IOA_MAX_SECTORS, 6412 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 6413 .shost_groups = ipr_ioa_groups, 6414 .sdev_groups = ipr_dev_groups, 6415 .proc_name = IPR_NAME, 6416 }; 6417 6418 /** 6419 * ipr_ioa_bringdown_done - IOA bring down completion. 6420 * @ipr_cmd: ipr command struct 6421 * 6422 * This function processes the completion of an adapter bring down. 6423 * It wakes any reset sleepers. 6424 * 6425 * Return value: 6426 * IPR_RC_JOB_RETURN 6427 **/ 6428 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 6429 { 6430 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6431 int i; 6432 6433 ENTER; 6434 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) { 6435 ipr_trace; 6436 ioa_cfg->scsi_unblock = 1; 6437 schedule_work(&ioa_cfg->work_q); 6438 } 6439 6440 ioa_cfg->in_reset_reload = 0; 6441 ioa_cfg->reset_retries = 0; 6442 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 6443 spin_lock(&ioa_cfg->hrrq[i]._lock); 6444 ioa_cfg->hrrq[i].ioa_is_dead = 1; 6445 spin_unlock(&ioa_cfg->hrrq[i]._lock); 6446 } 6447 wmb(); 6448 6449 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6450 wake_up_all(&ioa_cfg->reset_wait_q); 6451 LEAVE; 6452 6453 return IPR_RC_JOB_RETURN; 6454 } 6455 6456 /** 6457 * ipr_ioa_reset_done - IOA reset completion. 6458 * @ipr_cmd: ipr command struct 6459 * 6460 * This function processes the completion of an adapter reset. 6461 * It schedules any necessary mid-layer add/removes and 6462 * wakes any reset sleepers. 6463 * 6464 * Return value: 6465 * IPR_RC_JOB_RETURN 6466 **/ 6467 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 6468 { 6469 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6470 struct ipr_resource_entry *res; 6471 int j; 6472 6473 ENTER; 6474 ioa_cfg->in_reset_reload = 0; 6475 for (j = 0; j < ioa_cfg->hrrq_num; j++) { 6476 spin_lock(&ioa_cfg->hrrq[j]._lock); 6477 ioa_cfg->hrrq[j].allow_cmds = 1; 6478 spin_unlock(&ioa_cfg->hrrq[j]._lock); 6479 } 6480 wmb(); 6481 ioa_cfg->reset_cmd = NULL; 6482 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 6483 6484 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 6485 if (res->add_to_ml || res->del_from_ml) { 6486 ipr_trace; 6487 break; 6488 } 6489 } 6490 schedule_work(&ioa_cfg->work_q); 6491 6492 for (j = 0; j < IPR_NUM_HCAMS; j++) { 6493 list_del_init(&ioa_cfg->hostrcb[j]->queue); 6494 if (j < IPR_NUM_LOG_HCAMS) 6495 ipr_send_hcam(ioa_cfg, 6496 IPR_HCAM_CDB_OP_CODE_LOG_DATA, 6497 ioa_cfg->hostrcb[j]); 6498 else 6499 ipr_send_hcam(ioa_cfg, 6500 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 6501 ioa_cfg->hostrcb[j]); 6502 } 6503 6504 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS); 6505 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 6506 6507 ioa_cfg->reset_retries = 0; 6508 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6509 wake_up_all(&ioa_cfg->reset_wait_q); 6510 6511 ioa_cfg->scsi_unblock = 1; 6512 schedule_work(&ioa_cfg->work_q); 6513 LEAVE; 6514 return IPR_RC_JOB_RETURN; 6515 } 6516 6517 /** 6518 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 6519 * @supported_dev: supported device struct 6520 * @vpids: vendor product id struct 6521 * 6522 * Return value: 6523 * none 6524 **/ 6525 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 6526 struct ipr_std_inq_vpids *vpids) 6527 { 6528 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 6529 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 6530 supported_dev->num_records = 1; 6531 supported_dev->data_length = 6532 cpu_to_be16(sizeof(struct ipr_supported_device)); 6533 supported_dev->reserved = 0; 6534 } 6535 6536 /** 6537 * ipr_set_supported_devs - Send Set Supported Devices for a device 6538 * @ipr_cmd: ipr command struct 6539 * 6540 * This function sends a Set Supported Devices to the adapter 6541 * 6542 * Return value: 6543 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6544 **/ 6545 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 6546 { 6547 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6548 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 6549 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6550 struct ipr_resource_entry *res = ipr_cmd->u.res; 6551 6552 ipr_cmd->job_step = ipr_ioa_reset_done; 6553 6554 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 6555 if (!ipr_is_scsi_disk(res)) 6556 continue; 6557 6558 ipr_cmd->u.res = res; 6559 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids); 6560 6561 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6562 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6563 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6564 6565 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 6566 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES; 6567 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 6568 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 6569 6570 ipr_init_ioadl(ipr_cmd, 6571 ioa_cfg->vpd_cbs_dma + 6572 offsetof(struct ipr_misc_cbs, supp_dev), 6573 sizeof(struct ipr_supported_device), 6574 IPR_IOADL_FLAGS_WRITE_LAST); 6575 6576 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 6577 IPR_SET_SUP_DEVICE_TIMEOUT); 6578 6579 if (!ioa_cfg->sis64) 6580 ipr_cmd->job_step = ipr_set_supported_devs; 6581 LEAVE; 6582 return IPR_RC_JOB_RETURN; 6583 } 6584 6585 LEAVE; 6586 return IPR_RC_JOB_CONTINUE; 6587 } 6588 6589 /** 6590 * ipr_get_mode_page - Locate specified mode page 6591 * @mode_pages: mode page buffer 6592 * @page_code: page code to find 6593 * @len: minimum required length for mode page 6594 * 6595 * Return value: 6596 * pointer to mode page / NULL on failure 6597 **/ 6598 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 6599 u32 page_code, u32 len) 6600 { 6601 struct ipr_mode_page_hdr *mode_hdr; 6602 u32 page_length; 6603 u32 length; 6604 6605 if (!mode_pages || (mode_pages->hdr.length == 0)) 6606 return NULL; 6607 6608 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 6609 mode_hdr = (struct ipr_mode_page_hdr *) 6610 (mode_pages->data + mode_pages->hdr.block_desc_len); 6611 6612 while (length) { 6613 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 6614 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 6615 return mode_hdr; 6616 break; 6617 } else { 6618 page_length = (sizeof(struct ipr_mode_page_hdr) + 6619 mode_hdr->page_length); 6620 length -= page_length; 6621 mode_hdr = (struct ipr_mode_page_hdr *) 6622 ((unsigned long)mode_hdr + page_length); 6623 } 6624 } 6625 return NULL; 6626 } 6627 6628 /** 6629 * ipr_check_term_power - Check for term power errors 6630 * @ioa_cfg: ioa config struct 6631 * @mode_pages: IOAFP mode pages buffer 6632 * 6633 * Check the IOAFP's mode page 28 for term power errors 6634 * 6635 * Return value: 6636 * nothing 6637 **/ 6638 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 6639 struct ipr_mode_pages *mode_pages) 6640 { 6641 int i; 6642 int entry_length; 6643 struct ipr_dev_bus_entry *bus; 6644 struct ipr_mode_page28 *mode_page; 6645 6646 mode_page = ipr_get_mode_page(mode_pages, 0x28, 6647 sizeof(struct ipr_mode_page28)); 6648 6649 entry_length = mode_page->entry_length; 6650 6651 bus = mode_page->bus; 6652 6653 for (i = 0; i < mode_page->num_entries; i++) { 6654 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 6655 dev_err(&ioa_cfg->pdev->dev, 6656 "Term power is absent on scsi bus %d\n", 6657 bus->res_addr.bus); 6658 } 6659 6660 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 6661 } 6662 } 6663 6664 /** 6665 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 6666 * @ioa_cfg: ioa config struct 6667 * 6668 * Looks through the config table checking for SES devices. If 6669 * the SES device is in the SES table indicating a maximum SCSI 6670 * bus speed, the speed is limited for the bus. 6671 * 6672 * Return value: 6673 * none 6674 **/ 6675 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 6676 { 6677 u32 max_xfer_rate; 6678 int i; 6679 6680 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 6681 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 6682 ioa_cfg->bus_attr[i].bus_width); 6683 6684 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 6685 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 6686 } 6687 } 6688 6689 /** 6690 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 6691 * @ioa_cfg: ioa config struct 6692 * @mode_pages: mode page 28 buffer 6693 * 6694 * Updates mode page 28 based on driver configuration 6695 * 6696 * Return value: 6697 * none 6698 **/ 6699 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 6700 struct ipr_mode_pages *mode_pages) 6701 { 6702 int i, entry_length; 6703 struct ipr_dev_bus_entry *bus; 6704 struct ipr_bus_attributes *bus_attr; 6705 struct ipr_mode_page28 *mode_page; 6706 6707 mode_page = ipr_get_mode_page(mode_pages, 0x28, 6708 sizeof(struct ipr_mode_page28)); 6709 6710 entry_length = mode_page->entry_length; 6711 6712 /* Loop for each device bus entry */ 6713 for (i = 0, bus = mode_page->bus; 6714 i < mode_page->num_entries; 6715 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 6716 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 6717 dev_err(&ioa_cfg->pdev->dev, 6718 "Invalid resource address reported: 0x%08X\n", 6719 IPR_GET_PHYS_LOC(bus->res_addr)); 6720 continue; 6721 } 6722 6723 bus_attr = &ioa_cfg->bus_attr[i]; 6724 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 6725 bus->bus_width = bus_attr->bus_width; 6726 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 6727 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 6728 if (bus_attr->qas_enabled) 6729 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 6730 else 6731 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 6732 } 6733 } 6734 6735 /** 6736 * ipr_build_mode_select - Build a mode select command 6737 * @ipr_cmd: ipr command struct 6738 * @res_handle: resource handle to send command to 6739 * @parm: Byte 2 of Mode Sense command 6740 * @dma_addr: DMA buffer address 6741 * @xfer_len: data transfer length 6742 * 6743 * Return value: 6744 * none 6745 **/ 6746 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 6747 __be32 res_handle, u8 parm, 6748 dma_addr_t dma_addr, u8 xfer_len) 6749 { 6750 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6751 6752 ioarcb->res_handle = res_handle; 6753 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6754 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6755 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 6756 ioarcb->cmd_pkt.cdb[1] = parm; 6757 ioarcb->cmd_pkt.cdb[4] = xfer_len; 6758 6759 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST); 6760 } 6761 6762 /** 6763 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 6764 * @ipr_cmd: ipr command struct 6765 * 6766 * This function sets up the SCSI bus attributes and sends 6767 * a Mode Select for Page 28 to activate them. 6768 * 6769 * Return value: 6770 * IPR_RC_JOB_RETURN 6771 **/ 6772 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 6773 { 6774 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6775 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 6776 int length; 6777 6778 ENTER; 6779 ipr_scsi_bus_speed_limit(ioa_cfg); 6780 ipr_check_term_power(ioa_cfg, mode_pages); 6781 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 6782 length = mode_pages->hdr.length + 1; 6783 mode_pages->hdr.length = 0; 6784 6785 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 6786 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 6787 length); 6788 6789 ipr_cmd->job_step = ipr_set_supported_devs; 6790 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 6791 struct ipr_resource_entry, queue); 6792 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6793 6794 LEAVE; 6795 return IPR_RC_JOB_RETURN; 6796 } 6797 6798 /** 6799 * ipr_build_mode_sense - Builds a mode sense command 6800 * @ipr_cmd: ipr command struct 6801 * @res_handle: resource entry struct 6802 * @parm: Byte 2 of mode sense command 6803 * @dma_addr: DMA address of mode sense buffer 6804 * @xfer_len: Size of DMA buffer 6805 * 6806 * Return value: 6807 * none 6808 **/ 6809 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 6810 __be32 res_handle, 6811 u8 parm, dma_addr_t dma_addr, u8 xfer_len) 6812 { 6813 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6814 6815 ioarcb->res_handle = res_handle; 6816 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 6817 ioarcb->cmd_pkt.cdb[2] = parm; 6818 ioarcb->cmd_pkt.cdb[4] = xfer_len; 6819 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6820 6821 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 6822 } 6823 6824 /** 6825 * ipr_reset_cmd_failed - Handle failure of IOA reset command 6826 * @ipr_cmd: ipr command struct 6827 * 6828 * This function handles the failure of an IOA bringup command. 6829 * 6830 * Return value: 6831 * IPR_RC_JOB_RETURN 6832 **/ 6833 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 6834 { 6835 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6836 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6837 6838 dev_err(&ioa_cfg->pdev->dev, 6839 "0x%02X failed with IOASC: 0x%08X\n", 6840 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 6841 6842 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6843 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6844 return IPR_RC_JOB_RETURN; 6845 } 6846 6847 /** 6848 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 6849 * @ipr_cmd: ipr command struct 6850 * 6851 * This function handles the failure of a Mode Sense to the IOAFP. 6852 * Some adapters do not handle all mode pages. 6853 * 6854 * Return value: 6855 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6856 **/ 6857 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 6858 { 6859 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6860 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6861 6862 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 6863 ipr_cmd->job_step = ipr_set_supported_devs; 6864 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 6865 struct ipr_resource_entry, queue); 6866 return IPR_RC_JOB_CONTINUE; 6867 } 6868 6869 return ipr_reset_cmd_failed(ipr_cmd); 6870 } 6871 6872 /** 6873 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 6874 * @ipr_cmd: ipr command struct 6875 * 6876 * This function send a Page 28 mode sense to the IOA to 6877 * retrieve SCSI bus attributes. 6878 * 6879 * Return value: 6880 * IPR_RC_JOB_RETURN 6881 **/ 6882 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 6883 { 6884 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6885 6886 ENTER; 6887 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 6888 0x28, ioa_cfg->vpd_cbs_dma + 6889 offsetof(struct ipr_misc_cbs, mode_pages), 6890 sizeof(struct ipr_mode_pages)); 6891 6892 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 6893 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 6894 6895 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6896 6897 LEAVE; 6898 return IPR_RC_JOB_RETURN; 6899 } 6900 6901 /** 6902 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA 6903 * @ipr_cmd: ipr command struct 6904 * 6905 * This function enables dual IOA RAID support if possible. 6906 * 6907 * Return value: 6908 * IPR_RC_JOB_RETURN 6909 **/ 6910 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd) 6911 { 6912 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6913 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 6914 struct ipr_mode_page24 *mode_page; 6915 int length; 6916 6917 ENTER; 6918 mode_page = ipr_get_mode_page(mode_pages, 0x24, 6919 sizeof(struct ipr_mode_page24)); 6920 6921 if (mode_page) 6922 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF; 6923 6924 length = mode_pages->hdr.length + 1; 6925 mode_pages->hdr.length = 0; 6926 6927 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 6928 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 6929 length); 6930 6931 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 6932 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6933 6934 LEAVE; 6935 return IPR_RC_JOB_RETURN; 6936 } 6937 6938 /** 6939 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense 6940 * @ipr_cmd: ipr command struct 6941 * 6942 * This function handles the failure of a Mode Sense to the IOAFP. 6943 * Some adapters do not handle all mode pages. 6944 * 6945 * Return value: 6946 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6947 **/ 6948 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd) 6949 { 6950 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6951 6952 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 6953 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 6954 return IPR_RC_JOB_CONTINUE; 6955 } 6956 6957 return ipr_reset_cmd_failed(ipr_cmd); 6958 } 6959 6960 /** 6961 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA 6962 * @ipr_cmd: ipr command struct 6963 * 6964 * This function send a mode sense to the IOA to retrieve 6965 * the IOA Advanced Function Control mode page. 6966 * 6967 * Return value: 6968 * IPR_RC_JOB_RETURN 6969 **/ 6970 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd) 6971 { 6972 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6973 6974 ENTER; 6975 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 6976 0x24, ioa_cfg->vpd_cbs_dma + 6977 offsetof(struct ipr_misc_cbs, mode_pages), 6978 sizeof(struct ipr_mode_pages)); 6979 6980 ipr_cmd->job_step = ipr_ioafp_mode_select_page24; 6981 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed; 6982 6983 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6984 6985 LEAVE; 6986 return IPR_RC_JOB_RETURN; 6987 } 6988 6989 /** 6990 * ipr_init_res_table - Initialize the resource table 6991 * @ipr_cmd: ipr command struct 6992 * 6993 * This function looks through the existing resource table, comparing 6994 * it with the config table. This function will take care of old/new 6995 * devices and schedule adding/removing them from the mid-layer 6996 * as appropriate. 6997 * 6998 * Return value: 6999 * IPR_RC_JOB_CONTINUE 7000 **/ 7001 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 7002 { 7003 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7004 struct ipr_resource_entry *res, *temp; 7005 struct ipr_config_table_entry_wrapper cfgtew; 7006 int entries, found, flag, i; 7007 LIST_HEAD(old_res); 7008 7009 ENTER; 7010 if (ioa_cfg->sis64) 7011 flag = ioa_cfg->u.cfg_table64->hdr64.flags; 7012 else 7013 flag = ioa_cfg->u.cfg_table->hdr.flags; 7014 7015 if (flag & IPR_UCODE_DOWNLOAD_REQ) 7016 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 7017 7018 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 7019 list_move_tail(&res->queue, &old_res); 7020 7021 if (ioa_cfg->sis64) 7022 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries); 7023 else 7024 entries = ioa_cfg->u.cfg_table->hdr.num_entries; 7025 7026 for (i = 0; i < entries; i++) { 7027 if (ioa_cfg->sis64) 7028 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i]; 7029 else 7030 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i]; 7031 found = 0; 7032 7033 list_for_each_entry_safe(res, temp, &old_res, queue) { 7034 if (ipr_is_same_device(res, &cfgtew)) { 7035 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7036 found = 1; 7037 break; 7038 } 7039 } 7040 7041 if (!found) { 7042 if (list_empty(&ioa_cfg->free_res_q)) { 7043 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 7044 break; 7045 } 7046 7047 found = 1; 7048 res = list_entry(ioa_cfg->free_res_q.next, 7049 struct ipr_resource_entry, queue); 7050 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7051 ipr_init_res_entry(res, &cfgtew); 7052 res->add_to_ml = 1; 7053 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))) 7054 res->sdev->allow_restart = 1; 7055 7056 if (found) 7057 ipr_update_res_entry(res, &cfgtew); 7058 } 7059 7060 list_for_each_entry_safe(res, temp, &old_res, queue) { 7061 if (res->sdev) { 7062 res->del_from_ml = 1; 7063 res->res_handle = IPR_INVALID_RES_HANDLE; 7064 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7065 } 7066 } 7067 7068 list_for_each_entry_safe(res, temp, &old_res, queue) { 7069 ipr_clear_res_target(res); 7070 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 7071 } 7072 7073 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 7074 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24; 7075 else 7076 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 7077 7078 LEAVE; 7079 return IPR_RC_JOB_CONTINUE; 7080 } 7081 7082 /** 7083 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 7084 * @ipr_cmd: ipr command struct 7085 * 7086 * This function sends a Query IOA Configuration command 7087 * to the adapter to retrieve the IOA configuration table. 7088 * 7089 * Return value: 7090 * IPR_RC_JOB_RETURN 7091 **/ 7092 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 7093 { 7094 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7095 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7096 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 7097 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 7098 7099 ENTER; 7100 if (cap->cap & IPR_CAP_DUAL_IOA_RAID) 7101 ioa_cfg->dual_raid = 1; 7102 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 7103 ucode_vpd->major_release, ucode_vpd->card_type, 7104 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 7105 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7106 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7107 7108 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 7109 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff; 7110 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff; 7111 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff; 7112 7113 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size, 7114 IPR_IOADL_FLAGS_READ_LAST); 7115 7116 ipr_cmd->job_step = ipr_init_res_table; 7117 7118 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7119 7120 LEAVE; 7121 return IPR_RC_JOB_RETURN; 7122 } 7123 7124 static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd) 7125 { 7126 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7127 7128 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) 7129 return IPR_RC_JOB_CONTINUE; 7130 7131 return ipr_reset_cmd_failed(ipr_cmd); 7132 } 7133 7134 static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd, 7135 __be32 res_handle, u8 sa_code) 7136 { 7137 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7138 7139 ioarcb->res_handle = res_handle; 7140 ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION; 7141 ioarcb->cmd_pkt.cdb[1] = sa_code; 7142 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7143 } 7144 7145 /** 7146 * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service 7147 * action 7148 * @ipr_cmd: ipr command struct 7149 * 7150 * Return value: 7151 * none 7152 **/ 7153 static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd) 7154 { 7155 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7156 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7157 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data; 7158 7159 ENTER; 7160 7161 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 7162 7163 if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) { 7164 ipr_build_ioa_service_action(ipr_cmd, 7165 cpu_to_be32(IPR_IOA_RES_HANDLE), 7166 IPR_IOA_SA_CHANGE_CACHE_PARAMS); 7167 7168 ioarcb->cmd_pkt.cdb[2] = 0x40; 7169 7170 ipr_cmd->job_step_failed = ipr_ioa_service_action_failed; 7171 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 7172 IPR_SET_SUP_DEVICE_TIMEOUT); 7173 7174 LEAVE; 7175 return IPR_RC_JOB_RETURN; 7176 } 7177 7178 LEAVE; 7179 return IPR_RC_JOB_CONTINUE; 7180 } 7181 7182 /** 7183 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 7184 * @ipr_cmd: ipr command struct 7185 * @flags: flags to send 7186 * @page: page to inquire 7187 * @dma_addr: DMA address 7188 * @xfer_len: transfer data length 7189 * 7190 * This utility function sends an inquiry to the adapter. 7191 * 7192 * Return value: 7193 * none 7194 **/ 7195 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 7196 dma_addr_t dma_addr, u8 xfer_len) 7197 { 7198 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7199 7200 ENTER; 7201 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 7202 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7203 7204 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 7205 ioarcb->cmd_pkt.cdb[1] = flags; 7206 ioarcb->cmd_pkt.cdb[2] = page; 7207 ioarcb->cmd_pkt.cdb[4] = xfer_len; 7208 7209 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 7210 7211 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7212 LEAVE; 7213 } 7214 7215 /** 7216 * ipr_inquiry_page_supported - Is the given inquiry page supported 7217 * @page0: inquiry page 0 buffer 7218 * @page: page code. 7219 * 7220 * This function determines if the specified inquiry page is supported. 7221 * 7222 * Return value: 7223 * 1 if page is supported / 0 if not 7224 **/ 7225 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 7226 { 7227 int i; 7228 7229 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 7230 if (page0->page[i] == page) 7231 return 1; 7232 7233 return 0; 7234 } 7235 7236 /** 7237 * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter. 7238 * @ipr_cmd: ipr command struct 7239 * 7240 * This function sends a Page 0xC4 inquiry to the adapter 7241 * to retrieve software VPD information. 7242 * 7243 * Return value: 7244 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7245 **/ 7246 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd) 7247 { 7248 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7249 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 7250 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data; 7251 7252 ENTER; 7253 ipr_cmd->job_step = ipr_ioafp_set_caching_parameters; 7254 memset(pageC4, 0, sizeof(*pageC4)); 7255 7256 if (ipr_inquiry_page_supported(page0, 0xC4)) { 7257 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4, 7258 (ioa_cfg->vpd_cbs_dma 7259 + offsetof(struct ipr_misc_cbs, 7260 pageC4_data)), 7261 sizeof(struct ipr_inquiry_pageC4)); 7262 return IPR_RC_JOB_RETURN; 7263 } 7264 7265 LEAVE; 7266 return IPR_RC_JOB_CONTINUE; 7267 } 7268 7269 /** 7270 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter. 7271 * @ipr_cmd: ipr command struct 7272 * 7273 * This function sends a Page 0xD0 inquiry to the adapter 7274 * to retrieve adapter capabilities. 7275 * 7276 * Return value: 7277 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7278 **/ 7279 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd) 7280 { 7281 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7282 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 7283 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 7284 7285 ENTER; 7286 ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry; 7287 memset(cap, 0, sizeof(*cap)); 7288 7289 if (ipr_inquiry_page_supported(page0, 0xD0)) { 7290 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0, 7291 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap), 7292 sizeof(struct ipr_inquiry_cap)); 7293 return IPR_RC_JOB_RETURN; 7294 } 7295 7296 LEAVE; 7297 return IPR_RC_JOB_CONTINUE; 7298 } 7299 7300 /** 7301 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 7302 * @ipr_cmd: ipr command struct 7303 * 7304 * This function sends a Page 3 inquiry to the adapter 7305 * to retrieve software VPD information. 7306 * 7307 * Return value: 7308 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7309 **/ 7310 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 7311 { 7312 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7313 7314 ENTER; 7315 7316 ipr_cmd->job_step = ipr_ioafp_cap_inquiry; 7317 7318 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 7319 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 7320 sizeof(struct ipr_inquiry_page3)); 7321 7322 LEAVE; 7323 return IPR_RC_JOB_RETURN; 7324 } 7325 7326 /** 7327 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 7328 * @ipr_cmd: ipr command struct 7329 * 7330 * This function sends a Page 0 inquiry to the adapter 7331 * to retrieve supported inquiry pages. 7332 * 7333 * Return value: 7334 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7335 **/ 7336 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 7337 { 7338 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7339 char type[5]; 7340 7341 ENTER; 7342 7343 /* Grab the type out of the VPD and store it away */ 7344 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 7345 type[4] = '\0'; 7346 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 7347 7348 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 7349 7350 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 7351 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 7352 sizeof(struct ipr_inquiry_page0)); 7353 7354 LEAVE; 7355 return IPR_RC_JOB_RETURN; 7356 } 7357 7358 /** 7359 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 7360 * @ipr_cmd: ipr command struct 7361 * 7362 * This function sends a standard inquiry to the adapter. 7363 * 7364 * Return value: 7365 * IPR_RC_JOB_RETURN 7366 **/ 7367 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 7368 { 7369 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7370 7371 ENTER; 7372 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 7373 7374 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 7375 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 7376 sizeof(struct ipr_ioa_vpd)); 7377 7378 LEAVE; 7379 return IPR_RC_JOB_RETURN; 7380 } 7381 7382 /** 7383 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ. 7384 * @ipr_cmd: ipr command struct 7385 * 7386 * This function send an Identify Host Request Response Queue 7387 * command to establish the HRRQ with the adapter. 7388 * 7389 * Return value: 7390 * IPR_RC_JOB_RETURN 7391 **/ 7392 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd) 7393 { 7394 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7395 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7396 struct ipr_hrr_queue *hrrq; 7397 7398 ENTER; 7399 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 7400 if (ioa_cfg->identify_hrrq_index == 0) 7401 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 7402 7403 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) { 7404 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index]; 7405 7406 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 7407 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7408 7409 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7410 if (ioa_cfg->sis64) 7411 ioarcb->cmd_pkt.cdb[1] = 0x1; 7412 7413 if (ioa_cfg->nvectors == 1) 7414 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE; 7415 else 7416 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE; 7417 7418 ioarcb->cmd_pkt.cdb[2] = 7419 ((u64) hrrq->host_rrq_dma >> 24) & 0xff; 7420 ioarcb->cmd_pkt.cdb[3] = 7421 ((u64) hrrq->host_rrq_dma >> 16) & 0xff; 7422 ioarcb->cmd_pkt.cdb[4] = 7423 ((u64) hrrq->host_rrq_dma >> 8) & 0xff; 7424 ioarcb->cmd_pkt.cdb[5] = 7425 ((u64) hrrq->host_rrq_dma) & 0xff; 7426 ioarcb->cmd_pkt.cdb[7] = 7427 ((sizeof(u32) * hrrq->size) >> 8) & 0xff; 7428 ioarcb->cmd_pkt.cdb[8] = 7429 (sizeof(u32) * hrrq->size) & 0xff; 7430 7431 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE) 7432 ioarcb->cmd_pkt.cdb[9] = 7433 ioa_cfg->identify_hrrq_index; 7434 7435 if (ioa_cfg->sis64) { 7436 ioarcb->cmd_pkt.cdb[10] = 7437 ((u64) hrrq->host_rrq_dma >> 56) & 0xff; 7438 ioarcb->cmd_pkt.cdb[11] = 7439 ((u64) hrrq->host_rrq_dma >> 48) & 0xff; 7440 ioarcb->cmd_pkt.cdb[12] = 7441 ((u64) hrrq->host_rrq_dma >> 40) & 0xff; 7442 ioarcb->cmd_pkt.cdb[13] = 7443 ((u64) hrrq->host_rrq_dma >> 32) & 0xff; 7444 } 7445 7446 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE) 7447 ioarcb->cmd_pkt.cdb[14] = 7448 ioa_cfg->identify_hrrq_index; 7449 7450 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 7451 IPR_INTERNAL_TIMEOUT); 7452 7453 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) 7454 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 7455 7456 LEAVE; 7457 return IPR_RC_JOB_RETURN; 7458 } 7459 7460 LEAVE; 7461 return IPR_RC_JOB_CONTINUE; 7462 } 7463 7464 /** 7465 * ipr_reset_timer_done - Adapter reset timer function 7466 * @t: Timer context used to fetch ipr command struct 7467 * 7468 * Description: This function is used in adapter reset processing 7469 * for timing events. If the reset_cmd pointer in the IOA 7470 * config struct is not this adapter's we are doing nested 7471 * resets and fail_all_ops will take care of freeing the 7472 * command block. 7473 * 7474 * Return value: 7475 * none 7476 **/ 7477 static void ipr_reset_timer_done(struct timer_list *t) 7478 { 7479 struct ipr_cmnd *ipr_cmd = timer_container_of(ipr_cmd, t, timer); 7480 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7481 unsigned long lock_flags = 0; 7482 7483 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 7484 7485 if (ioa_cfg->reset_cmd == ipr_cmd) { 7486 list_del(&ipr_cmd->queue); 7487 ipr_cmd->done(ipr_cmd); 7488 } 7489 7490 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 7491 } 7492 7493 /** 7494 * ipr_reset_start_timer - Start a timer for adapter reset job 7495 * @ipr_cmd: ipr command struct 7496 * @timeout: timeout value 7497 * 7498 * Description: This function is used in adapter reset processing 7499 * for timing events. If the reset_cmd pointer in the IOA 7500 * config struct is not this adapter's we are doing nested 7501 * resets and fail_all_ops will take care of freeing the 7502 * command block. 7503 * 7504 * Return value: 7505 * none 7506 **/ 7507 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 7508 unsigned long timeout) 7509 { 7510 7511 ENTER; 7512 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 7513 ipr_cmd->done = ipr_reset_ioa_job; 7514 7515 ipr_cmd->timer.expires = jiffies + timeout; 7516 ipr_cmd->timer.function = ipr_reset_timer_done; 7517 add_timer(&ipr_cmd->timer); 7518 } 7519 7520 /** 7521 * ipr_init_ioa_mem - Initialize ioa_cfg control block 7522 * @ioa_cfg: ioa cfg struct 7523 * 7524 * Return value: 7525 * nothing 7526 **/ 7527 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 7528 { 7529 struct ipr_hrr_queue *hrrq; 7530 7531 for_each_hrrq(hrrq, ioa_cfg) { 7532 spin_lock(&hrrq->_lock); 7533 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size); 7534 7535 /* Initialize Host RRQ pointers */ 7536 hrrq->hrrq_start = hrrq->host_rrq; 7537 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1]; 7538 hrrq->hrrq_curr = hrrq->hrrq_start; 7539 hrrq->toggle_bit = 1; 7540 spin_unlock(&hrrq->_lock); 7541 } 7542 wmb(); 7543 7544 ioa_cfg->identify_hrrq_index = 0; 7545 if (ioa_cfg->hrrq_num == 1) 7546 atomic_set(&ioa_cfg->hrrq_index, 0); 7547 else 7548 atomic_set(&ioa_cfg->hrrq_index, 1); 7549 7550 /* Zero out config table */ 7551 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size); 7552 } 7553 7554 /** 7555 * ipr_reset_next_stage - Process IPL stage change based on feedback register. 7556 * @ipr_cmd: ipr command struct 7557 * 7558 * Return value: 7559 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7560 **/ 7561 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd) 7562 { 7563 unsigned long stage, stage_time; 7564 u32 feedback; 7565 volatile u32 int_reg; 7566 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7567 u64 maskval = 0; 7568 7569 feedback = readl(ioa_cfg->regs.init_feedback_reg); 7570 stage = feedback & IPR_IPL_INIT_STAGE_MASK; 7571 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK; 7572 7573 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time); 7574 7575 /* sanity check the stage_time value */ 7576 if (stage_time == 0) 7577 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME; 7578 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME) 7579 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME; 7580 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT) 7581 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT; 7582 7583 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) { 7584 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg); 7585 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7586 stage_time = ioa_cfg->transop_timeout; 7587 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 7588 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) { 7589 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 7590 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 7591 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 7592 maskval = IPR_PCII_IPL_STAGE_CHANGE; 7593 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER; 7594 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg); 7595 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7596 return IPR_RC_JOB_CONTINUE; 7597 } 7598 } 7599 7600 ipr_cmd->timer.expires = jiffies + stage_time * HZ; 7601 ipr_cmd->timer.function = ipr_oper_timeout; 7602 ipr_cmd->done = ipr_reset_ioa_job; 7603 add_timer(&ipr_cmd->timer); 7604 7605 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 7606 7607 return IPR_RC_JOB_RETURN; 7608 } 7609 7610 /** 7611 * ipr_reset_enable_ioa - Enable the IOA following a reset. 7612 * @ipr_cmd: ipr command struct 7613 * 7614 * This function reinitializes some control blocks and 7615 * enables destructive diagnostics on the adapter. 7616 * 7617 * Return value: 7618 * IPR_RC_JOB_RETURN 7619 **/ 7620 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 7621 { 7622 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7623 volatile u32 int_reg; 7624 volatile u64 maskval; 7625 int i; 7626 7627 ENTER; 7628 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 7629 ipr_init_ioa_mem(ioa_cfg); 7630 7631 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 7632 spin_lock(&ioa_cfg->hrrq[i]._lock); 7633 ioa_cfg->hrrq[i].allow_interrupts = 1; 7634 spin_unlock(&ioa_cfg->hrrq[i]._lock); 7635 } 7636 if (ioa_cfg->sis64) { 7637 /* Set the adapter to the correct endian mode. */ 7638 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg); 7639 int_reg = readl(ioa_cfg->regs.endian_swap_reg); 7640 } 7641 7642 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 7643 7644 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 7645 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 7646 ioa_cfg->regs.clr_interrupt_mask_reg32); 7647 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7648 return IPR_RC_JOB_CONTINUE; 7649 } 7650 7651 /* Enable destructive diagnostics on IOA */ 7652 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32); 7653 7654 if (ioa_cfg->sis64) { 7655 maskval = IPR_PCII_IPL_STAGE_CHANGE; 7656 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS; 7657 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg); 7658 } else 7659 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32); 7660 7661 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7662 7663 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 7664 7665 if (ioa_cfg->sis64) { 7666 ipr_cmd->job_step = ipr_reset_next_stage; 7667 return IPR_RC_JOB_CONTINUE; 7668 } 7669 7670 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ); 7671 ipr_cmd->timer.function = ipr_oper_timeout; 7672 ipr_cmd->done = ipr_reset_ioa_job; 7673 add_timer(&ipr_cmd->timer); 7674 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 7675 7676 LEAVE; 7677 return IPR_RC_JOB_RETURN; 7678 } 7679 7680 /** 7681 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 7682 * @ipr_cmd: ipr command struct 7683 * 7684 * This function is invoked when an adapter dump has run out 7685 * of processing time. 7686 * 7687 * Return value: 7688 * IPR_RC_JOB_CONTINUE 7689 **/ 7690 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 7691 { 7692 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7693 7694 if (ioa_cfg->sdt_state == GET_DUMP) 7695 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 7696 else if (ioa_cfg->sdt_state == READ_DUMP) 7697 ioa_cfg->sdt_state = ABORT_DUMP; 7698 7699 ioa_cfg->dump_timeout = 1; 7700 ipr_cmd->job_step = ipr_reset_alert; 7701 7702 return IPR_RC_JOB_CONTINUE; 7703 } 7704 7705 /** 7706 * ipr_unit_check_no_data - Log a unit check/no data error log 7707 * @ioa_cfg: ioa config struct 7708 * 7709 * Logs an error indicating the adapter unit checked, but for some 7710 * reason, we were unable to fetch the unit check buffer. 7711 * 7712 * Return value: 7713 * nothing 7714 **/ 7715 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 7716 { 7717 ioa_cfg->errors_logged++; 7718 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 7719 } 7720 7721 /** 7722 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 7723 * @ioa_cfg: ioa config struct 7724 * 7725 * Fetches the unit check buffer from the adapter by clocking the data 7726 * through the mailbox register. 7727 * 7728 * Return value: 7729 * nothing 7730 **/ 7731 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 7732 { 7733 unsigned long mailbox; 7734 struct ipr_hostrcb *hostrcb; 7735 struct ipr_uc_sdt sdt; 7736 int rc, length; 7737 u32 ioasc; 7738 7739 mailbox = readl(ioa_cfg->ioa_mailbox); 7740 7741 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) { 7742 ipr_unit_check_no_data(ioa_cfg); 7743 return; 7744 } 7745 7746 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 7747 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 7748 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 7749 7750 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) || 7751 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) && 7752 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) { 7753 ipr_unit_check_no_data(ioa_cfg); 7754 return; 7755 } 7756 7757 /* Find length of the first sdt entry (UC buffer) */ 7758 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE) 7759 length = be32_to_cpu(sdt.entry[0].end_token); 7760 else 7761 length = (be32_to_cpu(sdt.entry[0].end_token) - 7762 be32_to_cpu(sdt.entry[0].start_token)) & 7763 IPR_FMT2_MBX_ADDR_MASK; 7764 7765 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 7766 struct ipr_hostrcb, queue); 7767 list_del_init(&hostrcb->queue); 7768 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 7769 7770 rc = ipr_get_ldump_data_section(ioa_cfg, 7771 be32_to_cpu(sdt.entry[0].start_token), 7772 (__be32 *)&hostrcb->hcam, 7773 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 7774 7775 if (!rc) { 7776 ipr_handle_log_data(ioa_cfg, hostrcb); 7777 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 7778 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED && 7779 ioa_cfg->sdt_state == GET_DUMP) 7780 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 7781 } else 7782 ipr_unit_check_no_data(ioa_cfg); 7783 7784 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 7785 } 7786 7787 /** 7788 * ipr_reset_get_unit_check_job - Call to get the unit check buffer. 7789 * @ipr_cmd: ipr command struct 7790 * 7791 * Description: This function will call to get the unit check buffer. 7792 * 7793 * Return value: 7794 * IPR_RC_JOB_RETURN 7795 **/ 7796 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd) 7797 { 7798 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7799 7800 ENTER; 7801 ioa_cfg->ioa_unit_checked = 0; 7802 ipr_get_unit_check_buffer(ioa_cfg); 7803 ipr_cmd->job_step = ipr_reset_alert; 7804 ipr_reset_start_timer(ipr_cmd, 0); 7805 7806 LEAVE; 7807 return IPR_RC_JOB_RETURN; 7808 } 7809 7810 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd) 7811 { 7812 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7813 7814 ENTER; 7815 7816 if (ioa_cfg->sdt_state != GET_DUMP) 7817 return IPR_RC_JOB_RETURN; 7818 7819 if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left || 7820 (readl(ioa_cfg->regs.sense_interrupt_reg) & 7821 IPR_PCII_MAILBOX_STABLE)) { 7822 7823 if (!ipr_cmd->u.time_left) 7824 dev_err(&ioa_cfg->pdev->dev, 7825 "Timed out waiting for Mailbox register.\n"); 7826 7827 ioa_cfg->sdt_state = READ_DUMP; 7828 ioa_cfg->dump_timeout = 0; 7829 if (ioa_cfg->sis64) 7830 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT); 7831 else 7832 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT); 7833 ipr_cmd->job_step = ipr_reset_wait_for_dump; 7834 schedule_work(&ioa_cfg->work_q); 7835 7836 } else { 7837 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 7838 ipr_reset_start_timer(ipr_cmd, 7839 IPR_CHECK_FOR_RESET_TIMEOUT); 7840 } 7841 7842 LEAVE; 7843 return IPR_RC_JOB_RETURN; 7844 } 7845 7846 /** 7847 * ipr_reset_restore_cfg_space - Restore PCI config space. 7848 * @ipr_cmd: ipr command struct 7849 * 7850 * Description: This function restores the saved PCI config space of 7851 * the adapter, fails all outstanding ops back to the callers, and 7852 * fetches the dump/unit check if applicable to this reset. 7853 * 7854 * Return value: 7855 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7856 **/ 7857 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 7858 { 7859 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7860 7861 ENTER; 7862 pci_restore_state(ioa_cfg->pdev); 7863 7864 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 7865 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 7866 return IPR_RC_JOB_CONTINUE; 7867 } 7868 7869 ipr_fail_all_ops(ioa_cfg); 7870 7871 if (ioa_cfg->sis64) { 7872 /* Set the adapter to the correct endian mode. */ 7873 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg); 7874 readl(ioa_cfg->regs.endian_swap_reg); 7875 } 7876 7877 if (ioa_cfg->ioa_unit_checked) { 7878 if (ioa_cfg->sis64) { 7879 ipr_cmd->job_step = ipr_reset_get_unit_check_job; 7880 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT); 7881 return IPR_RC_JOB_RETURN; 7882 } else { 7883 ioa_cfg->ioa_unit_checked = 0; 7884 ipr_get_unit_check_buffer(ioa_cfg); 7885 ipr_cmd->job_step = ipr_reset_alert; 7886 ipr_reset_start_timer(ipr_cmd, 0); 7887 return IPR_RC_JOB_RETURN; 7888 } 7889 } 7890 7891 if (ioa_cfg->in_ioa_bringdown) { 7892 ipr_cmd->job_step = ipr_ioa_bringdown_done; 7893 } else if (ioa_cfg->sdt_state == GET_DUMP) { 7894 ipr_cmd->job_step = ipr_dump_mailbox_wait; 7895 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX; 7896 } else { 7897 ipr_cmd->job_step = ipr_reset_enable_ioa; 7898 } 7899 7900 LEAVE; 7901 return IPR_RC_JOB_CONTINUE; 7902 } 7903 7904 /** 7905 * ipr_reset_bist_done - BIST has completed on the adapter. 7906 * @ipr_cmd: ipr command struct 7907 * 7908 * Description: Unblock config space and resume the reset process. 7909 * 7910 * Return value: 7911 * IPR_RC_JOB_CONTINUE 7912 **/ 7913 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd) 7914 { 7915 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7916 7917 ENTER; 7918 if (ioa_cfg->cfg_locked) 7919 pci_cfg_access_unlock(ioa_cfg->pdev); 7920 ioa_cfg->cfg_locked = 0; 7921 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 7922 LEAVE; 7923 return IPR_RC_JOB_CONTINUE; 7924 } 7925 7926 /** 7927 * ipr_reset_start_bist - Run BIST on the adapter. 7928 * @ipr_cmd: ipr command struct 7929 * 7930 * Description: This function runs BIST on the adapter, then delays 2 seconds. 7931 * 7932 * Return value: 7933 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7934 **/ 7935 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 7936 { 7937 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7938 int rc = PCIBIOS_SUCCESSFUL; 7939 7940 ENTER; 7941 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO) 7942 writel(IPR_UPROCI_SIS64_START_BIST, 7943 ioa_cfg->regs.set_uproc_interrupt_reg32); 7944 else 7945 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 7946 7947 if (rc == PCIBIOS_SUCCESSFUL) { 7948 ipr_cmd->job_step = ipr_reset_bist_done; 7949 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 7950 rc = IPR_RC_JOB_RETURN; 7951 } else { 7952 if (ioa_cfg->cfg_locked) 7953 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev); 7954 ioa_cfg->cfg_locked = 0; 7955 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 7956 rc = IPR_RC_JOB_CONTINUE; 7957 } 7958 7959 LEAVE; 7960 return rc; 7961 } 7962 7963 /** 7964 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter 7965 * @ipr_cmd: ipr command struct 7966 * 7967 * Description: This clears PCI reset to the adapter and delays two seconds. 7968 * 7969 * Return value: 7970 * IPR_RC_JOB_RETURN 7971 **/ 7972 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd) 7973 { 7974 ENTER; 7975 ipr_cmd->job_step = ipr_reset_bist_done; 7976 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 7977 LEAVE; 7978 return IPR_RC_JOB_RETURN; 7979 } 7980 7981 /** 7982 * ipr_reset_reset_work - Pulse a PCIe fundamental reset 7983 * @work: work struct 7984 * 7985 * Description: This pulses warm reset to a slot. 7986 * 7987 **/ 7988 static void ipr_reset_reset_work(struct work_struct *work) 7989 { 7990 struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work); 7991 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7992 struct pci_dev *pdev = ioa_cfg->pdev; 7993 unsigned long lock_flags = 0; 7994 7995 ENTER; 7996 pci_set_pcie_reset_state(pdev, pcie_warm_reset); 7997 msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT)); 7998 pci_set_pcie_reset_state(pdev, pcie_deassert_reset); 7999 8000 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8001 if (ioa_cfg->reset_cmd == ipr_cmd) 8002 ipr_reset_ioa_job(ipr_cmd); 8003 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8004 LEAVE; 8005 } 8006 8007 /** 8008 * ipr_reset_slot_reset - Reset the PCI slot of the adapter. 8009 * @ipr_cmd: ipr command struct 8010 * 8011 * Description: This asserts PCI reset to the adapter. 8012 * 8013 * Return value: 8014 * IPR_RC_JOB_RETURN 8015 **/ 8016 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd) 8017 { 8018 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8019 8020 ENTER; 8021 INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work); 8022 queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work); 8023 ipr_cmd->job_step = ipr_reset_slot_reset_done; 8024 LEAVE; 8025 return IPR_RC_JOB_RETURN; 8026 } 8027 8028 /** 8029 * ipr_reset_block_config_access_wait - Wait for permission to block config access 8030 * @ipr_cmd: ipr command struct 8031 * 8032 * Description: This attempts to block config access to the IOA. 8033 * 8034 * Return value: 8035 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8036 **/ 8037 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd) 8038 { 8039 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8040 int rc = IPR_RC_JOB_CONTINUE; 8041 8042 if (pci_cfg_access_trylock(ioa_cfg->pdev)) { 8043 ioa_cfg->cfg_locked = 1; 8044 ipr_cmd->job_step = ioa_cfg->reset; 8045 } else { 8046 if (ipr_cmd->u.time_left) { 8047 rc = IPR_RC_JOB_RETURN; 8048 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 8049 ipr_reset_start_timer(ipr_cmd, 8050 IPR_CHECK_FOR_RESET_TIMEOUT); 8051 } else { 8052 ipr_cmd->job_step = ioa_cfg->reset; 8053 dev_err(&ioa_cfg->pdev->dev, 8054 "Timed out waiting to lock config access. Resetting anyway.\n"); 8055 } 8056 } 8057 8058 return rc; 8059 } 8060 8061 /** 8062 * ipr_reset_block_config_access - Block config access to the IOA 8063 * @ipr_cmd: ipr command struct 8064 * 8065 * Description: This attempts to block config access to the IOA 8066 * 8067 * Return value: 8068 * IPR_RC_JOB_CONTINUE 8069 **/ 8070 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd) 8071 { 8072 ipr_cmd->ioa_cfg->cfg_locked = 0; 8073 ipr_cmd->job_step = ipr_reset_block_config_access_wait; 8074 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 8075 return IPR_RC_JOB_CONTINUE; 8076 } 8077 8078 /** 8079 * ipr_reset_allowed - Query whether or not IOA can be reset 8080 * @ioa_cfg: ioa config struct 8081 * 8082 * Return value: 8083 * 0 if reset not allowed / non-zero if reset is allowed 8084 **/ 8085 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 8086 { 8087 volatile u32 temp_reg; 8088 8089 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 8090 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 8091 } 8092 8093 /** 8094 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 8095 * @ipr_cmd: ipr command struct 8096 * 8097 * Description: This function waits for adapter permission to run BIST, 8098 * then runs BIST. If the adapter does not give permission after a 8099 * reasonable time, we will reset the adapter anyway. The impact of 8100 * resetting the adapter without warning the adapter is the risk of 8101 * losing the persistent error log on the adapter. If the adapter is 8102 * reset while it is writing to the flash on the adapter, the flash 8103 * segment will have bad ECC and be zeroed. 8104 * 8105 * Return value: 8106 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8107 **/ 8108 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 8109 { 8110 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8111 int rc = IPR_RC_JOB_RETURN; 8112 8113 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 8114 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 8115 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 8116 } else { 8117 ipr_cmd->job_step = ipr_reset_block_config_access; 8118 rc = IPR_RC_JOB_CONTINUE; 8119 } 8120 8121 return rc; 8122 } 8123 8124 /** 8125 * ipr_reset_alert - Alert the adapter of a pending reset 8126 * @ipr_cmd: ipr command struct 8127 * 8128 * Description: This function alerts the adapter that it will be reset. 8129 * If memory space is not currently enabled, proceed directly 8130 * to running BIST on the adapter. The timer must always be started 8131 * so we guarantee we do not run BIST from ipr_isr. 8132 * 8133 * Return value: 8134 * IPR_RC_JOB_RETURN 8135 **/ 8136 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 8137 { 8138 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8139 u16 cmd_reg; 8140 int rc; 8141 8142 ENTER; 8143 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 8144 8145 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 8146 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 8147 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32); 8148 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 8149 } else { 8150 ipr_cmd->job_step = ipr_reset_block_config_access; 8151 } 8152 8153 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 8154 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 8155 8156 LEAVE; 8157 return IPR_RC_JOB_RETURN; 8158 } 8159 8160 /** 8161 * ipr_reset_quiesce_done - Complete IOA disconnect 8162 * @ipr_cmd: ipr command struct 8163 * 8164 * Description: Freeze the adapter to complete quiesce processing 8165 * 8166 * Return value: 8167 * IPR_RC_JOB_CONTINUE 8168 **/ 8169 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd) 8170 { 8171 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8172 8173 ENTER; 8174 ipr_cmd->job_step = ipr_ioa_bringdown_done; 8175 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 8176 LEAVE; 8177 return IPR_RC_JOB_CONTINUE; 8178 } 8179 8180 /** 8181 * ipr_reset_cancel_hcam_done - Check for outstanding commands 8182 * @ipr_cmd: ipr command struct 8183 * 8184 * Description: Ensure nothing is outstanding to the IOA and 8185 * proceed with IOA disconnect. Otherwise reset the IOA. 8186 * 8187 * Return value: 8188 * IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE 8189 **/ 8190 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd) 8191 { 8192 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8193 struct ipr_cmnd *loop_cmd; 8194 struct ipr_hrr_queue *hrrq; 8195 int rc = IPR_RC_JOB_CONTINUE; 8196 int count = 0; 8197 8198 ENTER; 8199 ipr_cmd->job_step = ipr_reset_quiesce_done; 8200 8201 for_each_hrrq(hrrq, ioa_cfg) { 8202 spin_lock(&hrrq->_lock); 8203 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) { 8204 count++; 8205 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8206 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 8207 rc = IPR_RC_JOB_RETURN; 8208 break; 8209 } 8210 spin_unlock(&hrrq->_lock); 8211 8212 if (count) 8213 break; 8214 } 8215 8216 LEAVE; 8217 return rc; 8218 } 8219 8220 /** 8221 * ipr_reset_cancel_hcam - Cancel outstanding HCAMs 8222 * @ipr_cmd: ipr command struct 8223 * 8224 * Description: Cancel any oustanding HCAMs to the IOA. 8225 * 8226 * Return value: 8227 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8228 **/ 8229 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd) 8230 { 8231 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8232 int rc = IPR_RC_JOB_CONTINUE; 8233 struct ipr_cmd_pkt *cmd_pkt; 8234 struct ipr_cmnd *hcam_cmd; 8235 struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ]; 8236 8237 ENTER; 8238 ipr_cmd->job_step = ipr_reset_cancel_hcam_done; 8239 8240 if (!hrrq->ioa_is_dead) { 8241 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) { 8242 list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) { 8243 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC) 8244 continue; 8245 8246 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 8247 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 8248 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 8249 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 8250 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST; 8251 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB; 8252 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff; 8253 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff; 8254 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff; 8255 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff; 8256 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff; 8257 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff; 8258 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff; 8259 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff; 8260 8261 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 8262 IPR_CANCEL_TIMEOUT); 8263 8264 rc = IPR_RC_JOB_RETURN; 8265 ipr_cmd->job_step = ipr_reset_cancel_hcam; 8266 break; 8267 } 8268 } 8269 } else 8270 ipr_cmd->job_step = ipr_reset_alert; 8271 8272 LEAVE; 8273 return rc; 8274 } 8275 8276 /** 8277 * ipr_reset_ucode_download_done - Microcode download completion 8278 * @ipr_cmd: ipr command struct 8279 * 8280 * Description: This function unmaps the microcode download buffer. 8281 * 8282 * Return value: 8283 * IPR_RC_JOB_CONTINUE 8284 **/ 8285 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 8286 { 8287 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8288 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 8289 8290 dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist, 8291 sglist->num_sg, DMA_TO_DEVICE); 8292 8293 ipr_cmd->job_step = ipr_reset_alert; 8294 return IPR_RC_JOB_CONTINUE; 8295 } 8296 8297 /** 8298 * ipr_reset_ucode_download - Download microcode to the adapter 8299 * @ipr_cmd: ipr command struct 8300 * 8301 * Description: This function checks to see if it there is microcode 8302 * to download to the adapter. If there is, a download is performed. 8303 * 8304 * Return value: 8305 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8306 **/ 8307 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 8308 { 8309 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8310 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 8311 8312 ENTER; 8313 ipr_cmd->job_step = ipr_reset_alert; 8314 8315 if (!sglist) 8316 return IPR_RC_JOB_CONTINUE; 8317 8318 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 8319 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 8320 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 8321 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 8322 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 8323 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 8324 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 8325 8326 if (ioa_cfg->sis64) 8327 ipr_build_ucode_ioadl64(ipr_cmd, sglist); 8328 else 8329 ipr_build_ucode_ioadl(ipr_cmd, sglist); 8330 ipr_cmd->job_step = ipr_reset_ucode_download_done; 8331 8332 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 8333 IPR_WRITE_BUFFER_TIMEOUT); 8334 8335 LEAVE; 8336 return IPR_RC_JOB_RETURN; 8337 } 8338 8339 /** 8340 * ipr_reset_shutdown_ioa - Shutdown the adapter 8341 * @ipr_cmd: ipr command struct 8342 * 8343 * Description: This function issues an adapter shutdown of the 8344 * specified type to the specified adapter as part of the 8345 * adapter reset job. 8346 * 8347 * Return value: 8348 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8349 **/ 8350 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 8351 { 8352 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8353 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 8354 unsigned long timeout; 8355 int rc = IPR_RC_JOB_CONTINUE; 8356 8357 ENTER; 8358 if (shutdown_type == IPR_SHUTDOWN_QUIESCE) 8359 ipr_cmd->job_step = ipr_reset_cancel_hcam; 8360 else if (shutdown_type != IPR_SHUTDOWN_NONE && 8361 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) { 8362 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 8363 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 8364 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 8365 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 8366 8367 if (shutdown_type == IPR_SHUTDOWN_NORMAL) 8368 timeout = IPR_SHUTDOWN_TIMEOUT; 8369 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 8370 timeout = IPR_INTERNAL_TIMEOUT; 8371 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 8372 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO; 8373 else 8374 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 8375 8376 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 8377 8378 rc = IPR_RC_JOB_RETURN; 8379 ipr_cmd->job_step = ipr_reset_ucode_download; 8380 } else 8381 ipr_cmd->job_step = ipr_reset_alert; 8382 8383 LEAVE; 8384 return rc; 8385 } 8386 8387 /** 8388 * ipr_reset_ioa_job - Adapter reset job 8389 * @ipr_cmd: ipr command struct 8390 * 8391 * Description: This function is the job router for the adapter reset job. 8392 * 8393 * Return value: 8394 * none 8395 **/ 8396 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 8397 { 8398 u32 rc, ioasc; 8399 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8400 8401 do { 8402 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 8403 8404 if (ioa_cfg->reset_cmd != ipr_cmd) { 8405 /* 8406 * We are doing nested adapter resets and this is 8407 * not the current reset job. 8408 */ 8409 list_add_tail(&ipr_cmd->queue, 8410 &ipr_cmd->hrrq->hrrq_free_q); 8411 return; 8412 } 8413 8414 if (IPR_IOASC_SENSE_KEY(ioasc)) { 8415 rc = ipr_cmd->job_step_failed(ipr_cmd); 8416 if (rc == IPR_RC_JOB_RETURN) 8417 return; 8418 } 8419 8420 ipr_reinit_ipr_cmnd(ipr_cmd); 8421 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 8422 rc = ipr_cmd->job_step(ipr_cmd); 8423 } while (rc == IPR_RC_JOB_CONTINUE); 8424 } 8425 8426 /** 8427 * _ipr_initiate_ioa_reset - Initiate an adapter reset 8428 * @ioa_cfg: ioa config struct 8429 * @job_step: first job step of reset job 8430 * @shutdown_type: shutdown type 8431 * 8432 * Description: This function will initiate the reset of the given adapter 8433 * starting at the selected job step. 8434 * If the caller needs to wait on the completion of the reset, 8435 * the caller must sleep on the reset_wait_q. 8436 * 8437 * Return value: 8438 * none 8439 **/ 8440 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 8441 int (*job_step) (struct ipr_cmnd *), 8442 enum ipr_shutdown_type shutdown_type) 8443 { 8444 struct ipr_cmnd *ipr_cmd; 8445 int i; 8446 8447 ioa_cfg->in_reset_reload = 1; 8448 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 8449 spin_lock(&ioa_cfg->hrrq[i]._lock); 8450 ioa_cfg->hrrq[i].allow_cmds = 0; 8451 spin_unlock(&ioa_cfg->hrrq[i]._lock); 8452 } 8453 wmb(); 8454 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) { 8455 ioa_cfg->scsi_unblock = 0; 8456 ioa_cfg->scsi_blocked = 1; 8457 scsi_block_requests(ioa_cfg->host); 8458 } 8459 8460 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 8461 ioa_cfg->reset_cmd = ipr_cmd; 8462 ipr_cmd->job_step = job_step; 8463 ipr_cmd->u.shutdown_type = shutdown_type; 8464 8465 ipr_reset_ioa_job(ipr_cmd); 8466 } 8467 8468 /** 8469 * ipr_initiate_ioa_reset - Initiate an adapter reset 8470 * @ioa_cfg: ioa config struct 8471 * @shutdown_type: shutdown type 8472 * 8473 * Description: This function will initiate the reset of the given adapter. 8474 * If the caller needs to wait on the completion of the reset, 8475 * the caller must sleep on the reset_wait_q. 8476 * 8477 * Return value: 8478 * none 8479 **/ 8480 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 8481 enum ipr_shutdown_type shutdown_type) 8482 { 8483 int i; 8484 8485 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 8486 return; 8487 8488 if (ioa_cfg->in_reset_reload) { 8489 if (ioa_cfg->sdt_state == GET_DUMP) 8490 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 8491 else if (ioa_cfg->sdt_state == READ_DUMP) 8492 ioa_cfg->sdt_state = ABORT_DUMP; 8493 } 8494 8495 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 8496 dev_err(&ioa_cfg->pdev->dev, 8497 "IOA taken offline - error recovery failed\n"); 8498 8499 ioa_cfg->reset_retries = 0; 8500 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 8501 spin_lock(&ioa_cfg->hrrq[i]._lock); 8502 ioa_cfg->hrrq[i].ioa_is_dead = 1; 8503 spin_unlock(&ioa_cfg->hrrq[i]._lock); 8504 } 8505 wmb(); 8506 8507 if (ioa_cfg->in_ioa_bringdown) { 8508 ioa_cfg->reset_cmd = NULL; 8509 ioa_cfg->in_reset_reload = 0; 8510 ipr_fail_all_ops(ioa_cfg); 8511 wake_up_all(&ioa_cfg->reset_wait_q); 8512 8513 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) { 8514 ioa_cfg->scsi_unblock = 1; 8515 schedule_work(&ioa_cfg->work_q); 8516 } 8517 return; 8518 } else { 8519 ioa_cfg->in_ioa_bringdown = 1; 8520 shutdown_type = IPR_SHUTDOWN_NONE; 8521 } 8522 } 8523 8524 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 8525 shutdown_type); 8526 } 8527 8528 /** 8529 * ipr_reset_freeze - Hold off all I/O activity 8530 * @ipr_cmd: ipr command struct 8531 * 8532 * Description: If the PCI slot is frozen, hold off all I/O 8533 * activity; then, as soon as the slot is available again, 8534 * initiate an adapter reset. 8535 */ 8536 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 8537 { 8538 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8539 int i; 8540 8541 /* Disallow new interrupts, avoid loop */ 8542 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 8543 spin_lock(&ioa_cfg->hrrq[i]._lock); 8544 ioa_cfg->hrrq[i].allow_interrupts = 0; 8545 spin_unlock(&ioa_cfg->hrrq[i]._lock); 8546 } 8547 wmb(); 8548 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 8549 ipr_cmd->done = ipr_reset_ioa_job; 8550 return IPR_RC_JOB_RETURN; 8551 } 8552 8553 /** 8554 * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled 8555 * @pdev: PCI device struct 8556 * 8557 * Description: This routine is called to tell us that the MMIO 8558 * access to the IOA has been restored 8559 */ 8560 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev) 8561 { 8562 unsigned long flags = 0; 8563 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8564 8565 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 8566 if (!ioa_cfg->probe_done) 8567 pci_save_state(pdev); 8568 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 8569 return PCI_ERS_RESULT_NEED_RESET; 8570 } 8571 8572 /** 8573 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 8574 * @pdev: PCI device struct 8575 * 8576 * Description: This routine is called to tell us that the PCI bus 8577 * is down. Can't do anything here, except put the device driver 8578 * into a holding pattern, waiting for the PCI bus to come back. 8579 */ 8580 static void ipr_pci_frozen(struct pci_dev *pdev) 8581 { 8582 unsigned long flags = 0; 8583 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8584 8585 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 8586 if (ioa_cfg->probe_done) 8587 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 8588 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 8589 } 8590 8591 /** 8592 * ipr_pci_slot_reset - Called when PCI slot has been reset. 8593 * @pdev: PCI device struct 8594 * 8595 * Description: This routine is called by the pci error recovery 8596 * code after the PCI slot has been reset, just before we 8597 * should resume normal operations. 8598 */ 8599 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 8600 { 8601 unsigned long flags = 0; 8602 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8603 8604 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 8605 if (ioa_cfg->probe_done) { 8606 if (ioa_cfg->needs_warm_reset) 8607 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8608 else 8609 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 8610 IPR_SHUTDOWN_NONE); 8611 } else 8612 wake_up_all(&ioa_cfg->eeh_wait_q); 8613 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 8614 return PCI_ERS_RESULT_RECOVERED; 8615 } 8616 8617 /** 8618 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 8619 * @pdev: PCI device struct 8620 * 8621 * Description: This routine is called when the PCI bus has 8622 * permanently failed. 8623 */ 8624 static void ipr_pci_perm_failure(struct pci_dev *pdev) 8625 { 8626 unsigned long flags = 0; 8627 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8628 int i; 8629 8630 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 8631 if (ioa_cfg->probe_done) { 8632 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 8633 ioa_cfg->sdt_state = ABORT_DUMP; 8634 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1; 8635 ioa_cfg->in_ioa_bringdown = 1; 8636 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 8637 spin_lock(&ioa_cfg->hrrq[i]._lock); 8638 ioa_cfg->hrrq[i].allow_cmds = 0; 8639 spin_unlock(&ioa_cfg->hrrq[i]._lock); 8640 } 8641 wmb(); 8642 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8643 } else 8644 wake_up_all(&ioa_cfg->eeh_wait_q); 8645 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 8646 } 8647 8648 /** 8649 * ipr_pci_error_detected - Called when a PCI error is detected. 8650 * @pdev: PCI device struct 8651 * @state: PCI channel state 8652 * 8653 * Description: Called when a PCI error is detected. 8654 * 8655 * Return value: 8656 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 8657 */ 8658 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 8659 pci_channel_state_t state) 8660 { 8661 switch (state) { 8662 case pci_channel_io_frozen: 8663 ipr_pci_frozen(pdev); 8664 return PCI_ERS_RESULT_CAN_RECOVER; 8665 case pci_channel_io_perm_failure: 8666 ipr_pci_perm_failure(pdev); 8667 return PCI_ERS_RESULT_DISCONNECT; 8668 default: 8669 break; 8670 } 8671 return PCI_ERS_RESULT_NEED_RESET; 8672 } 8673 8674 /** 8675 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 8676 * @ioa_cfg: ioa cfg struct 8677 * 8678 * Description: This is the second phase of adapter initialization 8679 * This function takes care of initilizing the adapter to the point 8680 * where it can accept new commands. 8681 * Return value: 8682 * none 8683 **/ 8684 static void ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 8685 { 8686 unsigned long host_lock_flags = 0; 8687 8688 ENTER; 8689 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 8690 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 8691 ioa_cfg->probe_done = 1; 8692 if (ioa_cfg->needs_hard_reset) { 8693 ioa_cfg->needs_hard_reset = 0; 8694 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8695 } else 8696 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 8697 IPR_SHUTDOWN_NONE); 8698 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 8699 8700 LEAVE; 8701 } 8702 8703 /** 8704 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 8705 * @ioa_cfg: ioa config struct 8706 * 8707 * Return value: 8708 * none 8709 **/ 8710 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 8711 { 8712 int i; 8713 8714 if (ioa_cfg->ipr_cmnd_list) { 8715 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 8716 if (ioa_cfg->ipr_cmnd_list[i]) 8717 dma_pool_free(ioa_cfg->ipr_cmd_pool, 8718 ioa_cfg->ipr_cmnd_list[i], 8719 ioa_cfg->ipr_cmnd_list_dma[i]); 8720 8721 ioa_cfg->ipr_cmnd_list[i] = NULL; 8722 } 8723 } 8724 8725 dma_pool_destroy(ioa_cfg->ipr_cmd_pool); 8726 8727 kfree(ioa_cfg->ipr_cmnd_list); 8728 kfree(ioa_cfg->ipr_cmnd_list_dma); 8729 ioa_cfg->ipr_cmnd_list = NULL; 8730 ioa_cfg->ipr_cmnd_list_dma = NULL; 8731 ioa_cfg->ipr_cmd_pool = NULL; 8732 } 8733 8734 /** 8735 * ipr_free_mem - Frees memory allocated for an adapter 8736 * @ioa_cfg: ioa cfg struct 8737 * 8738 * Return value: 8739 * nothing 8740 **/ 8741 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 8742 { 8743 int i; 8744 8745 kfree(ioa_cfg->res_entries); 8746 dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs), 8747 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 8748 ipr_free_cmd_blks(ioa_cfg); 8749 8750 for (i = 0; i < ioa_cfg->hrrq_num; i++) 8751 dma_free_coherent(&ioa_cfg->pdev->dev, 8752 sizeof(u32) * ioa_cfg->hrrq[i].size, 8753 ioa_cfg->hrrq[i].host_rrq, 8754 ioa_cfg->hrrq[i].host_rrq_dma); 8755 8756 dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size, 8757 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma); 8758 8759 for (i = 0; i < IPR_MAX_HCAMS; i++) { 8760 dma_free_coherent(&ioa_cfg->pdev->dev, 8761 sizeof(struct ipr_hostrcb), 8762 ioa_cfg->hostrcb[i], 8763 ioa_cfg->hostrcb_dma[i]); 8764 } 8765 8766 ipr_free_dump(ioa_cfg); 8767 kfree(ioa_cfg->trace); 8768 } 8769 8770 /** 8771 * ipr_free_irqs - Free all allocated IRQs for the adapter. 8772 * @ioa_cfg: ipr cfg struct 8773 * 8774 * This function frees all allocated IRQs for the 8775 * specified adapter. 8776 * 8777 * Return value: 8778 * none 8779 **/ 8780 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg) 8781 { 8782 struct pci_dev *pdev = ioa_cfg->pdev; 8783 int i; 8784 8785 for (i = 0; i < ioa_cfg->nvectors; i++) 8786 free_irq(pci_irq_vector(pdev, i), &ioa_cfg->hrrq[i]); 8787 pci_free_irq_vectors(pdev); 8788 } 8789 8790 /** 8791 * ipr_free_all_resources - Free all allocated resources for an adapter. 8792 * @ioa_cfg: ioa config struct 8793 * 8794 * This function frees all allocated resources for the 8795 * specified adapter. 8796 * 8797 * Return value: 8798 * none 8799 **/ 8800 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 8801 { 8802 struct pci_dev *pdev = ioa_cfg->pdev; 8803 8804 ENTER; 8805 ipr_free_irqs(ioa_cfg); 8806 if (ioa_cfg->reset_work_q) 8807 destroy_workqueue(ioa_cfg->reset_work_q); 8808 iounmap(ioa_cfg->hdw_dma_regs); 8809 pci_release_regions(pdev); 8810 ipr_free_mem(ioa_cfg); 8811 scsi_host_put(ioa_cfg->host); 8812 pci_disable_device(pdev); 8813 LEAVE; 8814 } 8815 8816 /** 8817 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 8818 * @ioa_cfg: ioa config struct 8819 * 8820 * Return value: 8821 * 0 on success / -ENOMEM on allocation failure 8822 **/ 8823 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 8824 { 8825 struct ipr_cmnd *ipr_cmd; 8826 struct ipr_ioarcb *ioarcb; 8827 dma_addr_t dma_addr; 8828 int i, entries_each_hrrq, hrrq_id = 0; 8829 8830 ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev, 8831 sizeof(struct ipr_cmnd), 512, 0); 8832 8833 if (!ioa_cfg->ipr_cmd_pool) 8834 return -ENOMEM; 8835 8836 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL); 8837 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL); 8838 8839 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) { 8840 ipr_free_cmd_blks(ioa_cfg); 8841 return -ENOMEM; 8842 } 8843 8844 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 8845 if (ioa_cfg->hrrq_num > 1) { 8846 if (i == 0) { 8847 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS; 8848 ioa_cfg->hrrq[i].min_cmd_id = 0; 8849 ioa_cfg->hrrq[i].max_cmd_id = 8850 (entries_each_hrrq - 1); 8851 } else { 8852 entries_each_hrrq = 8853 IPR_NUM_BASE_CMD_BLKS/ 8854 (ioa_cfg->hrrq_num - 1); 8855 ioa_cfg->hrrq[i].min_cmd_id = 8856 IPR_NUM_INTERNAL_CMD_BLKS + 8857 (i - 1) * entries_each_hrrq; 8858 ioa_cfg->hrrq[i].max_cmd_id = 8859 (IPR_NUM_INTERNAL_CMD_BLKS + 8860 i * entries_each_hrrq - 1); 8861 } 8862 } else { 8863 entries_each_hrrq = IPR_NUM_CMD_BLKS; 8864 ioa_cfg->hrrq[i].min_cmd_id = 0; 8865 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1); 8866 } 8867 ioa_cfg->hrrq[i].size = entries_each_hrrq; 8868 } 8869 8870 BUG_ON(ioa_cfg->hrrq_num == 0); 8871 8872 i = IPR_NUM_CMD_BLKS - 8873 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1; 8874 if (i > 0) { 8875 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i; 8876 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i; 8877 } 8878 8879 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 8880 ipr_cmd = dma_pool_zalloc(ioa_cfg->ipr_cmd_pool, 8881 GFP_KERNEL, &dma_addr); 8882 8883 if (!ipr_cmd) { 8884 ipr_free_cmd_blks(ioa_cfg); 8885 return -ENOMEM; 8886 } 8887 8888 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 8889 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 8890 8891 ioarcb = &ipr_cmd->ioarcb; 8892 ipr_cmd->dma_addr = dma_addr; 8893 if (ioa_cfg->sis64) 8894 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr); 8895 else 8896 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 8897 8898 ioarcb->host_response_handle = cpu_to_be32(i << 2); 8899 if (ioa_cfg->sis64) { 8900 ioarcb->u.sis64_addr_data.data_ioadl_addr = 8901 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 8902 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr = 8903 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64)); 8904 } else { 8905 ioarcb->write_ioadl_addr = 8906 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 8907 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 8908 ioarcb->ioasa_host_pci_addr = 8909 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa)); 8910 } 8911 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 8912 ipr_cmd->cmd_index = i; 8913 ipr_cmd->ioa_cfg = ioa_cfg; 8914 ipr_cmd->sense_buffer_dma = dma_addr + 8915 offsetof(struct ipr_cmnd, sense_buffer); 8916 8917 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id; 8918 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id]; 8919 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 8920 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id) 8921 hrrq_id++; 8922 } 8923 8924 return 0; 8925 } 8926 8927 /** 8928 * ipr_alloc_mem - Allocate memory for an adapter 8929 * @ioa_cfg: ioa config struct 8930 * 8931 * Return value: 8932 * 0 on success / non-zero for error 8933 **/ 8934 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 8935 { 8936 struct pci_dev *pdev = ioa_cfg->pdev; 8937 int i, rc = -ENOMEM; 8938 8939 ENTER; 8940 ioa_cfg->res_entries = kcalloc(ioa_cfg->max_devs_supported, 8941 sizeof(struct ipr_resource_entry), 8942 GFP_KERNEL); 8943 8944 if (!ioa_cfg->res_entries) 8945 goto out; 8946 8947 for (i = 0; i < ioa_cfg->max_devs_supported; i++) { 8948 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 8949 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg; 8950 } 8951 8952 ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev, 8953 sizeof(struct ipr_misc_cbs), 8954 &ioa_cfg->vpd_cbs_dma, 8955 GFP_KERNEL); 8956 8957 if (!ioa_cfg->vpd_cbs) 8958 goto out_free_res_entries; 8959 8960 if (ipr_alloc_cmd_blks(ioa_cfg)) 8961 goto out_free_vpd_cbs; 8962 8963 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 8964 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev, 8965 sizeof(u32) * ioa_cfg->hrrq[i].size, 8966 &ioa_cfg->hrrq[i].host_rrq_dma, 8967 GFP_KERNEL); 8968 8969 if (!ioa_cfg->hrrq[i].host_rrq) { 8970 while (--i >= 0) 8971 dma_free_coherent(&pdev->dev, 8972 sizeof(u32) * ioa_cfg->hrrq[i].size, 8973 ioa_cfg->hrrq[i].host_rrq, 8974 ioa_cfg->hrrq[i].host_rrq_dma); 8975 goto out_ipr_free_cmd_blocks; 8976 } 8977 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg; 8978 } 8979 8980 ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev, 8981 ioa_cfg->cfg_table_size, 8982 &ioa_cfg->cfg_table_dma, 8983 GFP_KERNEL); 8984 8985 if (!ioa_cfg->u.cfg_table) 8986 goto out_free_host_rrq; 8987 8988 for (i = 0; i < IPR_MAX_HCAMS; i++) { 8989 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev, 8990 sizeof(struct ipr_hostrcb), 8991 &ioa_cfg->hostrcb_dma[i], 8992 GFP_KERNEL); 8993 8994 if (!ioa_cfg->hostrcb[i]) 8995 goto out_free_hostrcb_dma; 8996 8997 ioa_cfg->hostrcb[i]->hostrcb_dma = 8998 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 8999 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg; 9000 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 9001 } 9002 9003 ioa_cfg->trace = kcalloc(IPR_NUM_TRACE_ENTRIES, 9004 sizeof(struct ipr_trace_entry), 9005 GFP_KERNEL); 9006 9007 if (!ioa_cfg->trace) 9008 goto out_free_hostrcb_dma; 9009 9010 rc = 0; 9011 out: 9012 LEAVE; 9013 return rc; 9014 9015 out_free_hostrcb_dma: 9016 while (i-- > 0) { 9017 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb), 9018 ioa_cfg->hostrcb[i], 9019 ioa_cfg->hostrcb_dma[i]); 9020 } 9021 dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size, 9022 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma); 9023 out_free_host_rrq: 9024 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9025 dma_free_coherent(&pdev->dev, 9026 sizeof(u32) * ioa_cfg->hrrq[i].size, 9027 ioa_cfg->hrrq[i].host_rrq, 9028 ioa_cfg->hrrq[i].host_rrq_dma); 9029 } 9030 out_ipr_free_cmd_blocks: 9031 ipr_free_cmd_blks(ioa_cfg); 9032 out_free_vpd_cbs: 9033 dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs), 9034 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 9035 out_free_res_entries: 9036 kfree(ioa_cfg->res_entries); 9037 goto out; 9038 } 9039 9040 /** 9041 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 9042 * @ioa_cfg: ioa config struct 9043 * 9044 * Return value: 9045 * none 9046 **/ 9047 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 9048 { 9049 int i; 9050 9051 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 9052 ioa_cfg->bus_attr[i].bus = i; 9053 ioa_cfg->bus_attr[i].qas_enabled = 0; 9054 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 9055 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 9056 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 9057 else 9058 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 9059 } 9060 } 9061 9062 /** 9063 * ipr_init_regs - Initialize IOA registers 9064 * @ioa_cfg: ioa config struct 9065 * 9066 * Return value: 9067 * none 9068 **/ 9069 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg) 9070 { 9071 const struct ipr_interrupt_offsets *p; 9072 struct ipr_interrupts *t; 9073 void __iomem *base; 9074 9075 p = &ioa_cfg->chip_cfg->regs; 9076 t = &ioa_cfg->regs; 9077 base = ioa_cfg->hdw_dma_regs; 9078 9079 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 9080 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 9081 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32; 9082 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 9083 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32; 9084 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 9085 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32; 9086 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 9087 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32; 9088 t->ioarrin_reg = base + p->ioarrin_reg; 9089 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 9090 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32; 9091 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 9092 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32; 9093 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 9094 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32; 9095 9096 if (ioa_cfg->sis64) { 9097 t->init_feedback_reg = base + p->init_feedback_reg; 9098 t->dump_addr_reg = base + p->dump_addr_reg; 9099 t->dump_data_reg = base + p->dump_data_reg; 9100 t->endian_swap_reg = base + p->endian_swap_reg; 9101 } 9102 } 9103 9104 /** 9105 * ipr_init_ioa_cfg - Initialize IOA config struct 9106 * @ioa_cfg: ioa config struct 9107 * @host: scsi host struct 9108 * @pdev: PCI dev struct 9109 * 9110 * Return value: 9111 * none 9112 **/ 9113 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 9114 struct Scsi_Host *host, struct pci_dev *pdev) 9115 { 9116 int i; 9117 9118 ioa_cfg->host = host; 9119 ioa_cfg->pdev = pdev; 9120 ioa_cfg->log_level = ipr_log_level; 9121 ioa_cfg->doorbell = IPR_DOORBELL; 9122 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 9123 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 9124 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 9125 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 9126 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 9127 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 9128 9129 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 9130 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 9131 INIT_LIST_HEAD(&ioa_cfg->hostrcb_report_q); 9132 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 9133 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 9134 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread); 9135 INIT_WORK(&ioa_cfg->scsi_add_work_q, ipr_add_remove_thread); 9136 init_waitqueue_head(&ioa_cfg->reset_wait_q); 9137 init_waitqueue_head(&ioa_cfg->msi_wait_q); 9138 init_waitqueue_head(&ioa_cfg->eeh_wait_q); 9139 ioa_cfg->sdt_state = INACTIVE; 9140 9141 ipr_initialize_bus_attr(ioa_cfg); 9142 ioa_cfg->max_devs_supported = ipr_max_devs; 9143 9144 if (ioa_cfg->sis64) { 9145 host->max_channel = IPR_MAX_SIS64_BUSES; 9146 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS; 9147 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET; 9148 if (ipr_max_devs > IPR_MAX_SIS64_DEVS) 9149 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS; 9150 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64) 9151 + ((sizeof(struct ipr_config_table_entry64) 9152 * ioa_cfg->max_devs_supported))); 9153 } else { 9154 host->max_channel = IPR_VSET_BUS; 9155 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 9156 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 9157 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS) 9158 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS; 9159 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr) 9160 + ((sizeof(struct ipr_config_table_entry) 9161 * ioa_cfg->max_devs_supported))); 9162 } 9163 9164 host->unique_id = host->host_no; 9165 host->max_cmd_len = IPR_MAX_CDB_LEN; 9166 host->can_queue = ioa_cfg->max_cmds; 9167 pci_set_drvdata(pdev, ioa_cfg); 9168 9169 for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) { 9170 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q); 9171 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q); 9172 spin_lock_init(&ioa_cfg->hrrq[i]._lock); 9173 if (i == 0) 9174 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock; 9175 else 9176 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock; 9177 } 9178 } 9179 9180 /** 9181 * ipr_get_chip_info - Find adapter chip information 9182 * @dev_id: PCI device id struct 9183 * 9184 * Return value: 9185 * ptr to chip information on success / NULL on failure 9186 **/ 9187 static const struct ipr_chip_t * 9188 ipr_get_chip_info(const struct pci_device_id *dev_id) 9189 { 9190 int i; 9191 9192 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 9193 if (ipr_chip[i].vendor == dev_id->vendor && 9194 ipr_chip[i].device == dev_id->device) 9195 return &ipr_chip[i]; 9196 return NULL; 9197 } 9198 9199 /** 9200 * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete 9201 * during probe time 9202 * @ioa_cfg: ioa config struct 9203 * 9204 * Return value: 9205 * None 9206 **/ 9207 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg) 9208 { 9209 struct pci_dev *pdev = ioa_cfg->pdev; 9210 9211 if (pci_channel_offline(pdev)) { 9212 wait_event_timeout(ioa_cfg->eeh_wait_q, 9213 !pci_channel_offline(pdev), 9214 IPR_PCI_ERROR_RECOVERY_TIMEOUT); 9215 pci_restore_state(pdev); 9216 } 9217 } 9218 9219 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg) 9220 { 9221 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1; 9222 9223 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) { 9224 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n, 9225 "host%d-%d", ioa_cfg->host->host_no, vec_idx); 9226 ioa_cfg->vectors_info[vec_idx]. 9227 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0; 9228 } 9229 } 9230 9231 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg, 9232 struct pci_dev *pdev) 9233 { 9234 int i, rc; 9235 9236 for (i = 1; i < ioa_cfg->nvectors; i++) { 9237 rc = request_irq(pci_irq_vector(pdev, i), 9238 ipr_isr_mhrrq, 9239 0, 9240 ioa_cfg->vectors_info[i].desc, 9241 &ioa_cfg->hrrq[i]); 9242 if (rc) { 9243 while (--i > 0) 9244 free_irq(pci_irq_vector(pdev, i), 9245 &ioa_cfg->hrrq[i]); 9246 return rc; 9247 } 9248 } 9249 return 0; 9250 } 9251 9252 /** 9253 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi(). 9254 * @devp: PCI device struct 9255 * @irq: IRQ number 9256 * 9257 * Description: Simply set the msi_received flag to 1 indicating that 9258 * Message Signaled Interrupts are supported. 9259 * 9260 * Return value: 9261 * 0 on success / non-zero on failure 9262 **/ 9263 static irqreturn_t ipr_test_intr(int irq, void *devp) 9264 { 9265 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 9266 unsigned long lock_flags = 0; 9267 9268 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq); 9269 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 9270 9271 ioa_cfg->msi_received = 1; 9272 wake_up(&ioa_cfg->msi_wait_q); 9273 9274 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 9275 return IRQ_HANDLED; 9276 } 9277 9278 /** 9279 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support. 9280 * @ioa_cfg: ioa config struct 9281 * @pdev: PCI device struct 9282 * 9283 * Description: This routine sets up and initiates a test interrupt to determine 9284 * if the interrupt is received via the ipr_test_intr() service routine. 9285 * If the tests fails, the driver will fall back to LSI. 9286 * 9287 * Return value: 9288 * 0 on success / non-zero on failure 9289 **/ 9290 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev) 9291 { 9292 int rc; 9293 unsigned long lock_flags = 0; 9294 int irq = pci_irq_vector(pdev, 0); 9295 9296 ENTER; 9297 9298 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 9299 init_waitqueue_head(&ioa_cfg->msi_wait_q); 9300 ioa_cfg->msi_received = 0; 9301 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 9302 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32); 9303 readl(ioa_cfg->regs.sense_interrupt_mask_reg); 9304 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 9305 9306 rc = request_irq(irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg); 9307 if (rc) { 9308 dev_err(&pdev->dev, "Can not assign irq %d\n", irq); 9309 return rc; 9310 } else if (ipr_debug) 9311 dev_info(&pdev->dev, "IRQ assigned: %d\n", irq); 9312 9313 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32); 9314 readl(ioa_cfg->regs.sense_interrupt_reg); 9315 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ); 9316 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 9317 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 9318 9319 if (!ioa_cfg->msi_received) { 9320 /* MSI test failed */ 9321 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n"); 9322 rc = -EOPNOTSUPP; 9323 } else if (ipr_debug) 9324 dev_info(&pdev->dev, "MSI test succeeded.\n"); 9325 9326 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 9327 9328 free_irq(irq, ioa_cfg); 9329 9330 LEAVE; 9331 9332 return rc; 9333 } 9334 9335 /* ipr_probe_ioa - Allocates memory and does first stage of initialization 9336 * @pdev: PCI device struct 9337 * @dev_id: PCI device id struct 9338 * 9339 * Return value: 9340 * 0 on success / non-zero on failure 9341 **/ 9342 static int ipr_probe_ioa(struct pci_dev *pdev, 9343 const struct pci_device_id *dev_id) 9344 { 9345 struct ipr_ioa_cfg *ioa_cfg; 9346 struct Scsi_Host *host; 9347 unsigned long ipr_regs_pci; 9348 void __iomem *ipr_regs; 9349 int rc = PCIBIOS_SUCCESSFUL; 9350 volatile u32 mask, uproc, interrupts; 9351 unsigned long lock_flags, driver_lock_flags; 9352 unsigned int irq_flag; 9353 9354 ENTER; 9355 9356 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 9357 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 9358 9359 if (!host) { 9360 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 9361 rc = -ENOMEM; 9362 goto out; 9363 } 9364 9365 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 9366 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 9367 9368 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id); 9369 9370 if (!ioa_cfg->ipr_chip) { 9371 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 9372 dev_id->vendor, dev_id->device); 9373 goto out_scsi_host_put; 9374 } 9375 9376 /* set SIS 32 or SIS 64 */ 9377 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0; 9378 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg; 9379 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr; 9380 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds; 9381 9382 if (ipr_transop_timeout) 9383 ioa_cfg->transop_timeout = ipr_transop_timeout; 9384 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT) 9385 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT; 9386 else 9387 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT; 9388 9389 ioa_cfg->revid = pdev->revision; 9390 9391 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 9392 9393 ipr_regs_pci = pci_resource_start(pdev, 0); 9394 9395 rc = pci_request_regions(pdev, IPR_NAME); 9396 if (rc < 0) { 9397 dev_err(&pdev->dev, 9398 "Couldn't register memory range of registers\n"); 9399 goto out_scsi_host_put; 9400 } 9401 9402 rc = pci_enable_device(pdev); 9403 9404 if (rc || pci_channel_offline(pdev)) { 9405 if (pci_channel_offline(pdev)) { 9406 ipr_wait_for_pci_err_recovery(ioa_cfg); 9407 rc = pci_enable_device(pdev); 9408 } 9409 9410 if (rc) { 9411 dev_err(&pdev->dev, "Cannot enable adapter\n"); 9412 ipr_wait_for_pci_err_recovery(ioa_cfg); 9413 goto out_release_regions; 9414 } 9415 } 9416 9417 ipr_regs = pci_ioremap_bar(pdev, 0); 9418 9419 if (!ipr_regs) { 9420 dev_err(&pdev->dev, 9421 "Couldn't map memory range of registers\n"); 9422 rc = -ENOMEM; 9423 goto out_disable; 9424 } 9425 9426 ioa_cfg->hdw_dma_regs = ipr_regs; 9427 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 9428 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 9429 9430 ipr_init_regs(ioa_cfg); 9431 9432 if (ioa_cfg->sis64) { 9433 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 9434 if (rc < 0) { 9435 dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n"); 9436 rc = dma_set_mask_and_coherent(&pdev->dev, 9437 DMA_BIT_MASK(32)); 9438 } 9439 } else 9440 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 9441 9442 if (rc < 0) { 9443 dev_err(&pdev->dev, "Failed to set DMA mask\n"); 9444 goto cleanup_nomem; 9445 } 9446 9447 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 9448 ioa_cfg->chip_cfg->cache_line_size); 9449 9450 if (rc != PCIBIOS_SUCCESSFUL) { 9451 dev_err(&pdev->dev, "Write of cache line size failed\n"); 9452 ipr_wait_for_pci_err_recovery(ioa_cfg); 9453 rc = -EIO; 9454 goto cleanup_nomem; 9455 } 9456 9457 /* Issue MMIO read to ensure card is not in EEH */ 9458 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg); 9459 ipr_wait_for_pci_err_recovery(ioa_cfg); 9460 9461 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) { 9462 dev_err(&pdev->dev, "The max number of MSIX is %d\n", 9463 IPR_MAX_MSIX_VECTORS); 9464 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS; 9465 } 9466 9467 irq_flag = PCI_IRQ_INTX; 9468 if (ioa_cfg->ipr_chip->has_msi) 9469 irq_flag |= PCI_IRQ_MSI | PCI_IRQ_MSIX; 9470 rc = pci_alloc_irq_vectors(pdev, 1, ipr_number_of_msix, irq_flag); 9471 if (rc < 0) { 9472 ipr_wait_for_pci_err_recovery(ioa_cfg); 9473 goto cleanup_nomem; 9474 } 9475 ioa_cfg->nvectors = rc; 9476 9477 if (!pdev->msi_enabled && !pdev->msix_enabled) 9478 ioa_cfg->clear_isr = 1; 9479 9480 pci_set_master(pdev); 9481 9482 if (pci_channel_offline(pdev)) { 9483 ipr_wait_for_pci_err_recovery(ioa_cfg); 9484 pci_set_master(pdev); 9485 if (pci_channel_offline(pdev)) { 9486 rc = -EIO; 9487 goto out_msi_disable; 9488 } 9489 } 9490 9491 if (pdev->msi_enabled || pdev->msix_enabled) { 9492 rc = ipr_test_msi(ioa_cfg, pdev); 9493 switch (rc) { 9494 case 0: 9495 dev_info(&pdev->dev, 9496 "Request for %d MSI%ss succeeded.", ioa_cfg->nvectors, 9497 pdev->msix_enabled ? "-X" : ""); 9498 break; 9499 case -EOPNOTSUPP: 9500 ipr_wait_for_pci_err_recovery(ioa_cfg); 9501 pci_free_irq_vectors(pdev); 9502 9503 ioa_cfg->nvectors = 1; 9504 ioa_cfg->clear_isr = 1; 9505 break; 9506 default: 9507 goto out_msi_disable; 9508 } 9509 } 9510 9511 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors, 9512 (unsigned int)num_online_cpus(), 9513 (unsigned int)IPR_MAX_HRRQ_NUM); 9514 9515 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 9516 goto out_msi_disable; 9517 9518 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 9519 goto out_msi_disable; 9520 9521 rc = ipr_alloc_mem(ioa_cfg); 9522 if (rc < 0) { 9523 dev_err(&pdev->dev, 9524 "Couldn't allocate enough memory for device driver!\n"); 9525 goto out_msi_disable; 9526 } 9527 9528 /* Save away PCI config space for use following IOA reset */ 9529 rc = pci_save_state(pdev); 9530 9531 if (rc != PCIBIOS_SUCCESSFUL) { 9532 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 9533 rc = -EIO; 9534 goto cleanup_nolog; 9535 } 9536 9537 /* 9538 * If HRRQ updated interrupt is not masked, or reset alert is set, 9539 * the card is in an unknown state and needs a hard reset 9540 */ 9541 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 9542 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32); 9543 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); 9544 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 9545 ioa_cfg->needs_hard_reset = 1; 9546 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices) 9547 ioa_cfg->needs_hard_reset = 1; 9548 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED) 9549 ioa_cfg->ioa_unit_checked = 1; 9550 9551 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 9552 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 9553 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 9554 9555 if (pdev->msi_enabled || pdev->msix_enabled) { 9556 name_msi_vectors(ioa_cfg); 9557 rc = request_irq(pci_irq_vector(pdev, 0), ipr_isr, 0, 9558 ioa_cfg->vectors_info[0].desc, 9559 &ioa_cfg->hrrq[0]); 9560 if (!rc) 9561 rc = ipr_request_other_msi_irqs(ioa_cfg, pdev); 9562 } else { 9563 rc = request_irq(pdev->irq, ipr_isr, 9564 IRQF_SHARED, 9565 IPR_NAME, &ioa_cfg->hrrq[0]); 9566 } 9567 if (rc) { 9568 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 9569 pdev->irq, rc); 9570 goto cleanup_nolog; 9571 } 9572 9573 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) || 9574 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) { 9575 ioa_cfg->needs_warm_reset = 1; 9576 ioa_cfg->reset = ipr_reset_slot_reset; 9577 9578 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d", 9579 WQ_MEM_RECLAIM, host->host_no); 9580 9581 if (!ioa_cfg->reset_work_q) { 9582 dev_err(&pdev->dev, "Couldn't register reset workqueue\n"); 9583 rc = -ENOMEM; 9584 goto out_free_irq; 9585 } 9586 } else 9587 ioa_cfg->reset = ipr_reset_start_bist; 9588 9589 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); 9590 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 9591 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); 9592 9593 LEAVE; 9594 out: 9595 return rc; 9596 9597 out_free_irq: 9598 ipr_free_irqs(ioa_cfg); 9599 cleanup_nolog: 9600 ipr_free_mem(ioa_cfg); 9601 out_msi_disable: 9602 ipr_wait_for_pci_err_recovery(ioa_cfg); 9603 pci_free_irq_vectors(pdev); 9604 cleanup_nomem: 9605 iounmap(ipr_regs); 9606 out_disable: 9607 pci_disable_device(pdev); 9608 out_release_regions: 9609 pci_release_regions(pdev); 9610 out_scsi_host_put: 9611 scsi_host_put(host); 9612 goto out; 9613 } 9614 9615 /** 9616 * ipr_initiate_ioa_bringdown - Bring down an adapter 9617 * @ioa_cfg: ioa config struct 9618 * @shutdown_type: shutdown type 9619 * 9620 * Description: This function will initiate bringing down the adapter. 9621 * This consists of issuing an IOA shutdown to the adapter 9622 * to flush the cache, and running BIST. 9623 * If the caller needs to wait on the completion of the reset, 9624 * the caller must sleep on the reset_wait_q. 9625 * 9626 * Return value: 9627 * none 9628 **/ 9629 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 9630 enum ipr_shutdown_type shutdown_type) 9631 { 9632 ENTER; 9633 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 9634 ioa_cfg->sdt_state = ABORT_DUMP; 9635 ioa_cfg->reset_retries = 0; 9636 ioa_cfg->in_ioa_bringdown = 1; 9637 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 9638 LEAVE; 9639 } 9640 9641 /** 9642 * __ipr_remove - Remove a single adapter 9643 * @pdev: pci device struct 9644 * 9645 * Adapter hot plug remove entry point. 9646 * 9647 * Return value: 9648 * none 9649 **/ 9650 static void __ipr_remove(struct pci_dev *pdev) 9651 { 9652 unsigned long host_lock_flags = 0; 9653 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9654 int i; 9655 unsigned long driver_lock_flags; 9656 ENTER; 9657 9658 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 9659 while (ioa_cfg->in_reset_reload) { 9660 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 9661 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 9662 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 9663 } 9664 9665 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9666 spin_lock(&ioa_cfg->hrrq[i]._lock); 9667 ioa_cfg->hrrq[i].removing_ioa = 1; 9668 spin_unlock(&ioa_cfg->hrrq[i]._lock); 9669 } 9670 wmb(); 9671 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 9672 9673 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 9674 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 9675 flush_work(&ioa_cfg->work_q); 9676 if (ioa_cfg->reset_work_q) 9677 flush_workqueue(ioa_cfg->reset_work_q); 9678 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 9679 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 9680 9681 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); 9682 list_del(&ioa_cfg->queue); 9683 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); 9684 9685 if (ioa_cfg->sdt_state == ABORT_DUMP) 9686 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 9687 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 9688 9689 ipr_free_all_resources(ioa_cfg); 9690 9691 LEAVE; 9692 } 9693 9694 /** 9695 * ipr_remove - IOA hot plug remove entry point 9696 * @pdev: pci device struct 9697 * 9698 * Adapter hot plug remove entry point. 9699 * 9700 * Return value: 9701 * none 9702 **/ 9703 static void ipr_remove(struct pci_dev *pdev) 9704 { 9705 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9706 9707 ENTER; 9708 9709 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 9710 &ipr_trace_attr); 9711 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj, 9712 &ipr_dump_attr); 9713 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj, 9714 &ipr_ioa_async_err_log); 9715 scsi_remove_host(ioa_cfg->host); 9716 9717 __ipr_remove(pdev); 9718 9719 LEAVE; 9720 } 9721 9722 /** 9723 * ipr_probe - Adapter hot plug add entry point 9724 * @pdev: pci device struct 9725 * @dev_id: pci device ID 9726 * 9727 * Return value: 9728 * 0 on success / non-zero on failure 9729 **/ 9730 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) 9731 { 9732 struct ipr_ioa_cfg *ioa_cfg; 9733 unsigned long flags; 9734 int rc, i; 9735 9736 rc = ipr_probe_ioa(pdev, dev_id); 9737 9738 if (rc) 9739 return rc; 9740 9741 ioa_cfg = pci_get_drvdata(pdev); 9742 ipr_probe_ioa_part2(ioa_cfg); 9743 9744 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 9745 9746 if (rc) { 9747 __ipr_remove(pdev); 9748 return rc; 9749 } 9750 9751 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj, 9752 &ipr_trace_attr); 9753 9754 if (rc) { 9755 scsi_remove_host(ioa_cfg->host); 9756 __ipr_remove(pdev); 9757 return rc; 9758 } 9759 9760 rc = sysfs_create_bin_file(&ioa_cfg->host->shost_dev.kobj, 9761 &ipr_ioa_async_err_log); 9762 9763 if (rc) { 9764 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj, 9765 &ipr_dump_attr); 9766 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 9767 &ipr_trace_attr); 9768 scsi_remove_host(ioa_cfg->host); 9769 __ipr_remove(pdev); 9770 return rc; 9771 } 9772 9773 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj, 9774 &ipr_dump_attr); 9775 9776 if (rc) { 9777 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj, 9778 &ipr_ioa_async_err_log); 9779 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 9780 &ipr_trace_attr); 9781 scsi_remove_host(ioa_cfg->host); 9782 __ipr_remove(pdev); 9783 return rc; 9784 } 9785 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9786 ioa_cfg->scan_enabled = 1; 9787 schedule_work(&ioa_cfg->work_q); 9788 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9789 9790 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight; 9791 9792 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 9793 for (i = 1; i < ioa_cfg->hrrq_num; i++) { 9794 irq_poll_init(&ioa_cfg->hrrq[i].iopoll, 9795 ioa_cfg->iopoll_weight, ipr_iopoll); 9796 } 9797 } 9798 9799 scsi_scan_host(ioa_cfg->host); 9800 9801 return 0; 9802 } 9803 9804 /** 9805 * ipr_shutdown - Shutdown handler. 9806 * @pdev: pci device struct 9807 * 9808 * This function is invoked upon system shutdown/reboot. It will issue 9809 * an adapter shutdown to the adapter to flush the write cache. 9810 * 9811 * Return value: 9812 * none 9813 **/ 9814 static void ipr_shutdown(struct pci_dev *pdev) 9815 { 9816 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9817 unsigned long lock_flags = 0; 9818 enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL; 9819 int i; 9820 9821 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 9822 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 9823 ioa_cfg->iopoll_weight = 0; 9824 for (i = 1; i < ioa_cfg->hrrq_num; i++) 9825 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll); 9826 } 9827 9828 while (ioa_cfg->in_reset_reload) { 9829 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 9830 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 9831 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 9832 } 9833 9834 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) 9835 shutdown_type = IPR_SHUTDOWN_QUIESCE; 9836 9837 ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type); 9838 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 9839 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 9840 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) { 9841 ipr_free_irqs(ioa_cfg); 9842 pci_disable_device(ioa_cfg->pdev); 9843 } 9844 } 9845 9846 static const struct pci_device_id ipr_pci_table[] = { 9847 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 9848 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 }, 9849 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 9850 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 }, 9851 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 9852 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 }, 9853 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 9854 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 }, 9855 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 9856 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 }, 9857 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 9858 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 }, 9859 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 9860 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 }, 9861 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 9862 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 9863 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9864 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 9865 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 9866 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 9867 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 9868 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9869 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 9870 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 9871 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9872 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 9873 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 9874 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 9875 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 9876 IPR_USE_LONG_TRANSOP_TIMEOUT}, 9877 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 9878 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 9879 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9880 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 9881 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 9882 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9883 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 9884 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 }, 9885 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 9886 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 }, 9887 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 9888 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 9889 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET }, 9890 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 9891 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 }, 9892 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 9893 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 }, 9894 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 9895 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 9896 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9897 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 9898 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 9899 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9900 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9901 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 }, 9902 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9903 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 }, 9904 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9905 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 }, 9906 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9907 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 }, 9908 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9909 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 }, 9910 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9911 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 }, 9912 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9913 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 }, 9914 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9915 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 }, 9916 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9917 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 }, 9918 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9919 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 }, 9920 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9921 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 }, 9922 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9923 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 }, 9924 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9925 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 }, 9926 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9927 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 }, 9928 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9929 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 }, 9930 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9931 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 }, 9932 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9933 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 }, 9934 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9935 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 }, 9936 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9937 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 }, 9938 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9939 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 }, 9940 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9941 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 }, 9942 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9943 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 }, 9944 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9945 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 }, 9946 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9947 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 }, 9948 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9949 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 }, 9950 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9951 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 }, 9952 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, 9953 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580A, 0, 0, 0 }, 9954 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, 9955 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580B, 0, 0, 0 }, 9956 { } 9957 }; 9958 MODULE_DEVICE_TABLE(pci, ipr_pci_table); 9959 9960 static const struct pci_error_handlers ipr_err_handler = { 9961 .error_detected = ipr_pci_error_detected, 9962 .mmio_enabled = ipr_pci_mmio_enabled, 9963 .slot_reset = ipr_pci_slot_reset, 9964 }; 9965 9966 static struct pci_driver ipr_driver = { 9967 .name = IPR_NAME, 9968 .id_table = ipr_pci_table, 9969 .probe = ipr_probe, 9970 .remove = ipr_remove, 9971 .shutdown = ipr_shutdown, 9972 .err_handler = &ipr_err_handler, 9973 }; 9974 9975 /** 9976 * ipr_halt_done - Shutdown prepare completion 9977 * @ipr_cmd: ipr command struct 9978 * 9979 * Return value: 9980 * none 9981 **/ 9982 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd) 9983 { 9984 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 9985 } 9986 9987 /** 9988 * ipr_halt - Issue shutdown prepare to all adapters 9989 * @nb: Notifier block 9990 * @event: Notifier event 9991 * @buf: Notifier data (unused) 9992 * 9993 * Return value: 9994 * NOTIFY_OK on success / NOTIFY_DONE on failure 9995 **/ 9996 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf) 9997 { 9998 struct ipr_cmnd *ipr_cmd; 9999 struct ipr_ioa_cfg *ioa_cfg; 10000 unsigned long flags = 0, driver_lock_flags; 10001 10002 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF) 10003 return NOTIFY_DONE; 10004 10005 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); 10006 10007 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) { 10008 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 10009 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds || 10010 (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) { 10011 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 10012 continue; 10013 } 10014 10015 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 10016 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 10017 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 10018 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 10019 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 10020 10021 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 10022 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 10023 } 10024 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); 10025 10026 return NOTIFY_OK; 10027 } 10028 10029 static struct notifier_block ipr_notifier = { 10030 ipr_halt, NULL, 0 10031 }; 10032 10033 /** 10034 * ipr_init - Module entry point 10035 * 10036 * Return value: 10037 * 0 on success / negative value on failure 10038 **/ 10039 static int __init ipr_init(void) 10040 { 10041 int rc; 10042 10043 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 10044 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 10045 10046 register_reboot_notifier(&ipr_notifier); 10047 rc = pci_register_driver(&ipr_driver); 10048 if (rc) { 10049 unregister_reboot_notifier(&ipr_notifier); 10050 return rc; 10051 } 10052 10053 return 0; 10054 } 10055 10056 /** 10057 * ipr_exit - Module unload 10058 * 10059 * Module unload entry point. 10060 * 10061 * Return value: 10062 * none 10063 **/ 10064 static void __exit ipr_exit(void) 10065 { 10066 unregister_reboot_notifier(&ipr_notifier); 10067 pci_unregister_driver(&ipr_driver); 10068 } 10069 10070 module_init(ipr_init); 10071 module_exit(ipr_exit); 10072