1 /* 2 * ipr.c -- driver for IBM Power Linux RAID adapters 3 * 4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation 5 * 6 * Copyright (C) 2003, 2004 IBM Corporation 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23 24 /* 25 * Notes: 26 * 27 * This driver is used to control the following SCSI adapters: 28 * 29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B 30 * 31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter 32 * PCI-X Dual Channel Ultra 320 SCSI Adapter 33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card 34 * Embedded SCSI adapter on p615 and p655 systems 35 * 36 * Supported Hardware Features: 37 * - Ultra 320 SCSI controller 38 * - PCI-X host interface 39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine 40 * - Non-Volatile Write Cache 41 * - Supports attachment of non-RAID disks, tape, and optical devices 42 * - RAID Levels 0, 5, 10 43 * - Hot spare 44 * - Background Parity Checking 45 * - Background Data Scrubbing 46 * - Ability to increase the capacity of an existing RAID 5 disk array 47 * by adding disks 48 * 49 * Driver Features: 50 * - Tagged command queuing 51 * - Adapter microcode download 52 * - PCI hot plug 53 * - SCSI device hot plug 54 * 55 */ 56 57 #include <linux/fs.h> 58 #include <linux/init.h> 59 #include <linux/types.h> 60 #include <linux/errno.h> 61 #include <linux/kernel.h> 62 #include <linux/slab.h> 63 #include <linux/vmalloc.h> 64 #include <linux/ioport.h> 65 #include <linux/delay.h> 66 #include <linux/pci.h> 67 #include <linux/wait.h> 68 #include <linux/spinlock.h> 69 #include <linux/sched.h> 70 #include <linux/interrupt.h> 71 #include <linux/blkdev.h> 72 #include <linux/firmware.h> 73 #include <linux/module.h> 74 #include <linux/moduleparam.h> 75 #include <linux/libata.h> 76 #include <linux/hdreg.h> 77 #include <linux/reboot.h> 78 #include <linux/stringify.h> 79 #include <asm/io.h> 80 #include <asm/irq.h> 81 #include <asm/processor.h> 82 #include <scsi/scsi.h> 83 #include <scsi/scsi_host.h> 84 #include <scsi/scsi_tcq.h> 85 #include <scsi/scsi_eh.h> 86 #include <scsi/scsi_cmnd.h> 87 #include "ipr.h" 88 89 /* 90 * Global Data 91 */ 92 static LIST_HEAD(ipr_ioa_head); 93 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL; 94 static unsigned int ipr_max_speed = 1; 95 static int ipr_testmode = 0; 96 static unsigned int ipr_fastfail = 0; 97 static unsigned int ipr_transop_timeout = 0; 98 static unsigned int ipr_debug = 0; 99 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS; 100 static unsigned int ipr_dual_ioa_raid = 1; 101 static unsigned int ipr_number_of_msix = 16; 102 static unsigned int ipr_fast_reboot; 103 static DEFINE_SPINLOCK(ipr_driver_lock); 104 105 /* This table describes the differences between DMA controller chips */ 106 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { 107 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */ 108 .mailbox = 0x0042C, 109 .max_cmds = 100, 110 .cache_line_size = 0x20, 111 .clear_isr = 1, 112 .iopoll_weight = 0, 113 { 114 .set_interrupt_mask_reg = 0x0022C, 115 .clr_interrupt_mask_reg = 0x00230, 116 .clr_interrupt_mask_reg32 = 0x00230, 117 .sense_interrupt_mask_reg = 0x0022C, 118 .sense_interrupt_mask_reg32 = 0x0022C, 119 .clr_interrupt_reg = 0x00228, 120 .clr_interrupt_reg32 = 0x00228, 121 .sense_interrupt_reg = 0x00224, 122 .sense_interrupt_reg32 = 0x00224, 123 .ioarrin_reg = 0x00404, 124 .sense_uproc_interrupt_reg = 0x00214, 125 .sense_uproc_interrupt_reg32 = 0x00214, 126 .set_uproc_interrupt_reg = 0x00214, 127 .set_uproc_interrupt_reg32 = 0x00214, 128 .clr_uproc_interrupt_reg = 0x00218, 129 .clr_uproc_interrupt_reg32 = 0x00218 130 } 131 }, 132 { /* Snipe and Scamp */ 133 .mailbox = 0x0052C, 134 .max_cmds = 100, 135 .cache_line_size = 0x20, 136 .clear_isr = 1, 137 .iopoll_weight = 0, 138 { 139 .set_interrupt_mask_reg = 0x00288, 140 .clr_interrupt_mask_reg = 0x0028C, 141 .clr_interrupt_mask_reg32 = 0x0028C, 142 .sense_interrupt_mask_reg = 0x00288, 143 .sense_interrupt_mask_reg32 = 0x00288, 144 .clr_interrupt_reg = 0x00284, 145 .clr_interrupt_reg32 = 0x00284, 146 .sense_interrupt_reg = 0x00280, 147 .sense_interrupt_reg32 = 0x00280, 148 .ioarrin_reg = 0x00504, 149 .sense_uproc_interrupt_reg = 0x00290, 150 .sense_uproc_interrupt_reg32 = 0x00290, 151 .set_uproc_interrupt_reg = 0x00290, 152 .set_uproc_interrupt_reg32 = 0x00290, 153 .clr_uproc_interrupt_reg = 0x00294, 154 .clr_uproc_interrupt_reg32 = 0x00294 155 } 156 }, 157 { /* CRoC */ 158 .mailbox = 0x00044, 159 .max_cmds = 1000, 160 .cache_line_size = 0x20, 161 .clear_isr = 0, 162 .iopoll_weight = 64, 163 { 164 .set_interrupt_mask_reg = 0x00010, 165 .clr_interrupt_mask_reg = 0x00018, 166 .clr_interrupt_mask_reg32 = 0x0001C, 167 .sense_interrupt_mask_reg = 0x00010, 168 .sense_interrupt_mask_reg32 = 0x00014, 169 .clr_interrupt_reg = 0x00008, 170 .clr_interrupt_reg32 = 0x0000C, 171 .sense_interrupt_reg = 0x00000, 172 .sense_interrupt_reg32 = 0x00004, 173 .ioarrin_reg = 0x00070, 174 .sense_uproc_interrupt_reg = 0x00020, 175 .sense_uproc_interrupt_reg32 = 0x00024, 176 .set_uproc_interrupt_reg = 0x00020, 177 .set_uproc_interrupt_reg32 = 0x00024, 178 .clr_uproc_interrupt_reg = 0x00028, 179 .clr_uproc_interrupt_reg32 = 0x0002C, 180 .init_feedback_reg = 0x0005C, 181 .dump_addr_reg = 0x00064, 182 .dump_data_reg = 0x00068, 183 .endian_swap_reg = 0x00084 184 } 185 }, 186 }; 187 188 static const struct ipr_chip_t ipr_chip[] = { 189 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 190 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 191 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 192 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 193 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, true, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 194 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] }, 195 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] }, 196 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }, 197 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }, 198 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] } 199 }; 200 201 static int ipr_max_bus_speeds[] = { 202 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE 203 }; 204 205 MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); 206 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); 207 module_param_named(max_speed, ipr_max_speed, uint, 0); 208 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); 209 module_param_named(log_level, ipr_log_level, uint, 0); 210 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); 211 module_param_named(testmode, ipr_testmode, int, 0); 212 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); 213 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR); 214 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); 215 module_param_named(transop_timeout, ipr_transop_timeout, int, 0); 216 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); 217 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR); 218 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)"); 219 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0); 220 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)"); 221 module_param_named(max_devs, ipr_max_devs, int, 0); 222 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. " 223 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]"); 224 module_param_named(number_of_msix, ipr_number_of_msix, int, 0); 225 MODULE_PARM_DESC(number_of_msix, "Specify the number of MSIX interrupts to use on capable adapters (1 - 16). (default:16)"); 226 module_param_named(fast_reboot, ipr_fast_reboot, int, S_IRUGO | S_IWUSR); 227 MODULE_PARM_DESC(fast_reboot, "Skip adapter shutdown during reboot. Set to 1 to enable. (default: 0)"); 228 MODULE_LICENSE("GPL"); 229 MODULE_VERSION(IPR_DRIVER_VERSION); 230 231 /* A constant array of IOASCs/URCs/Error Messages */ 232 static const 233 struct ipr_error_table_t ipr_error_table[] = { 234 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL, 235 "8155: An unknown error was received"}, 236 {0x00330000, 0, 0, 237 "Soft underlength error"}, 238 {0x005A0000, 0, 0, 239 "Command to be cancelled not found"}, 240 {0x00808000, 0, 0, 241 "Qualified success"}, 242 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL, 243 "FFFE: Soft device bus error recovered by the IOA"}, 244 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL, 245 "4101: Soft device bus fabric error"}, 246 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL, 247 "FFFC: Logical block guard error recovered by the device"}, 248 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL, 249 "FFFC: Logical block reference tag error recovered by the device"}, 250 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL, 251 "4171: Recovered scatter list tag / sequence number error"}, 252 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL, 253 "FF3D: Recovered logical block CRC error on IOA to Host transfer"}, 254 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL, 255 "4171: Recovered logical block sequence number error on IOA to Host transfer"}, 256 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL, 257 "FFFD: Recovered logical block reference tag error detected by the IOA"}, 258 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL, 259 "FFFD: Logical block guard error recovered by the IOA"}, 260 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL, 261 "FFF9: Device sector reassign successful"}, 262 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL, 263 "FFF7: Media error recovered by device rewrite procedures"}, 264 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL, 265 "7001: IOA sector reassignment successful"}, 266 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL, 267 "FFF9: Soft media error. Sector reassignment recommended"}, 268 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL, 269 "FFF7: Media error recovered by IOA rewrite procedures"}, 270 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL, 271 "FF3D: Soft PCI bus error recovered by the IOA"}, 272 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL, 273 "FFF6: Device hardware error recovered by the IOA"}, 274 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL, 275 "FFF6: Device hardware error recovered by the device"}, 276 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL, 277 "FF3D: Soft IOA error recovered by the IOA"}, 278 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL, 279 "FFFA: Undefined device response recovered by the IOA"}, 280 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL, 281 "FFF6: Device bus error, message or command phase"}, 282 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL, 283 "FFFE: Task Management Function failed"}, 284 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL, 285 "FFF6: Failure prediction threshold exceeded"}, 286 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL, 287 "8009: Impending cache battery pack failure"}, 288 {0x02040100, 0, 0, 289 "Logical Unit in process of becoming ready"}, 290 {0x02040200, 0, 0, 291 "Initializing command required"}, 292 {0x02040400, 0, 0, 293 "34FF: Disk device format in progress"}, 294 {0x02040C00, 0, 0, 295 "Logical unit not accessible, target port in unavailable state"}, 296 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL, 297 "9070: IOA requested reset"}, 298 {0x023F0000, 0, 0, 299 "Synchronization required"}, 300 {0x02408500, 0, 0, 301 "IOA microcode download required"}, 302 {0x02408600, 0, 0, 303 "Device bus connection is prohibited by host"}, 304 {0x024E0000, 0, 0, 305 "No ready, IOA shutdown"}, 306 {0x025A0000, 0, 0, 307 "Not ready, IOA has been shutdown"}, 308 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL, 309 "3020: Storage subsystem configuration error"}, 310 {0x03110B00, 0, 0, 311 "FFF5: Medium error, data unreadable, recommend reassign"}, 312 {0x03110C00, 0, 0, 313 "7000: Medium error, data unreadable, do not reassign"}, 314 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL, 315 "FFF3: Disk media format bad"}, 316 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL, 317 "3002: Addressed device failed to respond to selection"}, 318 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL, 319 "3100: Device bus error"}, 320 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL, 321 "3109: IOA timed out a device command"}, 322 {0x04088000, 0, 0, 323 "3120: SCSI bus is not operational"}, 324 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL, 325 "4100: Hard device bus fabric error"}, 326 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL, 327 "310C: Logical block guard error detected by the device"}, 328 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL, 329 "310C: Logical block reference tag error detected by the device"}, 330 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL, 331 "4170: Scatter list tag / sequence number error"}, 332 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL, 333 "8150: Logical block CRC error on IOA to Host transfer"}, 334 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL, 335 "4170: Logical block sequence number error on IOA to Host transfer"}, 336 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL, 337 "310D: Logical block reference tag error detected by the IOA"}, 338 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL, 339 "310D: Logical block guard error detected by the IOA"}, 340 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL, 341 "9000: IOA reserved area data check"}, 342 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL, 343 "9001: IOA reserved area invalid data pattern"}, 344 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL, 345 "9002: IOA reserved area LRC error"}, 346 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL, 347 "Hardware Error, IOA metadata access error"}, 348 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL, 349 "102E: Out of alternate sectors for disk storage"}, 350 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL, 351 "FFF4: Data transfer underlength error"}, 352 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL, 353 "FFF4: Data transfer overlength error"}, 354 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL, 355 "3400: Logical unit failure"}, 356 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL, 357 "FFF4: Device microcode is corrupt"}, 358 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL, 359 "8150: PCI bus error"}, 360 {0x04430000, 1, 0, 361 "Unsupported device bus message received"}, 362 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL, 363 "FFF4: Disk device problem"}, 364 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL, 365 "8150: Permanent IOA failure"}, 366 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL, 367 "3010: Disk device returned wrong response to IOA"}, 368 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL, 369 "8151: IOA microcode error"}, 370 {0x04448500, 0, 0, 371 "Device bus status error"}, 372 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL, 373 "8157: IOA error requiring IOA reset to recover"}, 374 {0x04448700, 0, 0, 375 "ATA device status error"}, 376 {0x04490000, 0, 0, 377 "Message reject received from the device"}, 378 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL, 379 "8008: A permanent cache battery pack failure occurred"}, 380 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL, 381 "9090: Disk unit has been modified after the last known status"}, 382 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL, 383 "9081: IOA detected device error"}, 384 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL, 385 "9082: IOA detected device error"}, 386 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL, 387 "3110: Device bus error, message or command phase"}, 388 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL, 389 "3110: SAS Command / Task Management Function failed"}, 390 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL, 391 "9091: Incorrect hardware configuration change has been detected"}, 392 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL, 393 "9073: Invalid multi-adapter configuration"}, 394 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL, 395 "4010: Incorrect connection between cascaded expanders"}, 396 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL, 397 "4020: Connections exceed IOA design limits"}, 398 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL, 399 "4030: Incorrect multipath connection"}, 400 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL, 401 "4110: Unsupported enclosure function"}, 402 {0x04679800, 0, IPR_DEFAULT_LOG_LEVEL, 403 "4120: SAS cable VPD cannot be read"}, 404 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL, 405 "FFF4: Command to logical unit failed"}, 406 {0x05240000, 1, 0, 407 "Illegal request, invalid request type or request packet"}, 408 {0x05250000, 0, 0, 409 "Illegal request, invalid resource handle"}, 410 {0x05258000, 0, 0, 411 "Illegal request, commands not allowed to this device"}, 412 {0x05258100, 0, 0, 413 "Illegal request, command not allowed to a secondary adapter"}, 414 {0x05258200, 0, 0, 415 "Illegal request, command not allowed to a non-optimized resource"}, 416 {0x05260000, 0, 0, 417 "Illegal request, invalid field in parameter list"}, 418 {0x05260100, 0, 0, 419 "Illegal request, parameter not supported"}, 420 {0x05260200, 0, 0, 421 "Illegal request, parameter value invalid"}, 422 {0x052C0000, 0, 0, 423 "Illegal request, command sequence error"}, 424 {0x052C8000, 1, 0, 425 "Illegal request, dual adapter support not enabled"}, 426 {0x052C8100, 1, 0, 427 "Illegal request, another cable connector was physically disabled"}, 428 {0x054E8000, 1, 0, 429 "Illegal request, inconsistent group id/group count"}, 430 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL, 431 "9031: Array protection temporarily suspended, protection resuming"}, 432 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL, 433 "9040: Array protection temporarily suspended, protection resuming"}, 434 {0x060B0100, 0, IPR_DEFAULT_LOG_LEVEL, 435 "4080: IOA exceeded maximum operating temperature"}, 436 {0x060B8000, 0, IPR_DEFAULT_LOG_LEVEL, 437 "4085: Service required"}, 438 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL, 439 "3140: Device bus not ready to ready transition"}, 440 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL, 441 "FFFB: SCSI bus was reset"}, 442 {0x06290500, 0, 0, 443 "FFFE: SCSI bus transition to single ended"}, 444 {0x06290600, 0, 0, 445 "FFFE: SCSI bus transition to LVD"}, 446 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL, 447 "FFFB: SCSI bus was reset by another initiator"}, 448 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL, 449 "3029: A device replacement has occurred"}, 450 {0x063F8300, 0, IPR_DEFAULT_LOG_LEVEL, 451 "4102: Device bus fabric performance degradation"}, 452 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL, 453 "9051: IOA cache data exists for a missing or failed device"}, 454 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL, 455 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"}, 456 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL, 457 "9025: Disk unit is not supported at its physical location"}, 458 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL, 459 "3020: IOA detected a SCSI bus configuration error"}, 460 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL, 461 "3150: SCSI bus configuration error"}, 462 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL, 463 "9074: Asymmetric advanced function disk configuration"}, 464 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL, 465 "4040: Incomplete multipath connection between IOA and enclosure"}, 466 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL, 467 "4041: Incomplete multipath connection between enclosure and device"}, 468 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL, 469 "9075: Incomplete multipath connection between IOA and remote IOA"}, 470 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL, 471 "9076: Configuration error, missing remote IOA"}, 472 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL, 473 "4050: Enclosure does not support a required multipath function"}, 474 {0x06679800, 0, IPR_DEFAULT_LOG_LEVEL, 475 "4121: Configuration error, required cable is missing"}, 476 {0x06679900, 0, IPR_DEFAULT_LOG_LEVEL, 477 "4122: Cable is not plugged into the correct location on remote IOA"}, 478 {0x06679A00, 0, IPR_DEFAULT_LOG_LEVEL, 479 "4123: Configuration error, invalid cable vital product data"}, 480 {0x06679B00, 0, IPR_DEFAULT_LOG_LEVEL, 481 "4124: Configuration error, both cable ends are plugged into the same IOA"}, 482 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL, 483 "4070: Logically bad block written on device"}, 484 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL, 485 "9041: Array protection temporarily suspended"}, 486 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL, 487 "9042: Corrupt array parity detected on specified device"}, 488 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL, 489 "9030: Array no longer protected due to missing or failed disk unit"}, 490 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL, 491 "9071: Link operational transition"}, 492 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL, 493 "9072: Link not operational transition"}, 494 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL, 495 "9032: Array exposed but still protected"}, 496 {0x066B8300, 0, IPR_DEBUG_LOG_LEVEL, 497 "70DD: Device forced failed by disrupt device command"}, 498 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL, 499 "4061: Multipath redundancy level got better"}, 500 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL, 501 "4060: Multipath redundancy level got worse"}, 502 {0x06808100, 0, IPR_DEBUG_LOG_LEVEL, 503 "9083: Device raw mode enabled"}, 504 {0x06808200, 0, IPR_DEBUG_LOG_LEVEL, 505 "9084: Device raw mode disabled"}, 506 {0x07270000, 0, 0, 507 "Failure due to other device"}, 508 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL, 509 "9008: IOA does not support functions expected by devices"}, 510 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL, 511 "9010: Cache data associated with attached devices cannot be found"}, 512 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL, 513 "9011: Cache data belongs to devices other than those attached"}, 514 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL, 515 "9020: Array missing 2 or more devices with only 1 device present"}, 516 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL, 517 "9021: Array missing 2 or more devices with 2 or more devices present"}, 518 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL, 519 "9022: Exposed array is missing a required device"}, 520 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL, 521 "9023: Array member(s) not at required physical locations"}, 522 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL, 523 "9024: Array not functional due to present hardware configuration"}, 524 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL, 525 "9026: Array not functional due to present hardware configuration"}, 526 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL, 527 "9027: Array is missing a device and parity is out of sync"}, 528 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL, 529 "9028: Maximum number of arrays already exist"}, 530 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL, 531 "9050: Required cache data cannot be located for a disk unit"}, 532 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL, 533 "9052: Cache data exists for a device that has been modified"}, 534 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL, 535 "9054: IOA resources not available due to previous problems"}, 536 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL, 537 "9092: Disk unit requires initialization before use"}, 538 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL, 539 "9029: Incorrect hardware configuration change has been detected"}, 540 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL, 541 "9060: One or more disk pairs are missing from an array"}, 542 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL, 543 "9061: One or more disks are missing from an array"}, 544 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL, 545 "9062: One or more disks are missing from an array"}, 546 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL, 547 "9063: Maximum number of functional arrays has been exceeded"}, 548 {0x07279A00, 0, 0, 549 "Data protect, other volume set problem"}, 550 {0x0B260000, 0, 0, 551 "Aborted command, invalid descriptor"}, 552 {0x0B3F9000, 0, 0, 553 "Target operating conditions have changed, dual adapter takeover"}, 554 {0x0B530200, 0, 0, 555 "Aborted command, medium removal prevented"}, 556 {0x0B5A0000, 0, 0, 557 "Command terminated by host"}, 558 {0x0B5B8000, 0, 0, 559 "Aborted command, command terminated by host"} 560 }; 561 562 static const struct ipr_ses_table_entry ipr_ses_table[] = { 563 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, 564 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, 565 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ 566 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ 567 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ 568 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ 569 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, 570 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, 571 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 572 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 573 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, 574 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, 575 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } 576 }; 577 578 /* 579 * Function Prototypes 580 */ 581 static int ipr_reset_alert(struct ipr_cmnd *); 582 static void ipr_process_ccn(struct ipr_cmnd *); 583 static void ipr_process_error(struct ipr_cmnd *); 584 static void ipr_reset_ioa_job(struct ipr_cmnd *); 585 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, 586 enum ipr_shutdown_type); 587 588 #ifdef CONFIG_SCSI_IPR_TRACE 589 /** 590 * ipr_trc_hook - Add a trace entry to the driver trace 591 * @ipr_cmd: ipr command struct 592 * @type: trace type 593 * @add_data: additional data 594 * 595 * Return value: 596 * none 597 **/ 598 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, 599 u8 type, u32 add_data) 600 { 601 struct ipr_trace_entry *trace_entry; 602 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 603 unsigned int trace_index; 604 605 trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK; 606 trace_entry = &ioa_cfg->trace[trace_index]; 607 trace_entry->time = jiffies; 608 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; 609 trace_entry->type = type; 610 if (ipr_cmd->ioa_cfg->sis64) 611 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command; 612 else 613 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command; 614 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff; 615 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; 616 trace_entry->u.add_data = add_data; 617 wmb(); 618 } 619 #else 620 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0) 621 #endif 622 623 /** 624 * ipr_lock_and_done - Acquire lock and complete command 625 * @ipr_cmd: ipr command struct 626 * 627 * Return value: 628 * none 629 **/ 630 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd) 631 { 632 unsigned long lock_flags; 633 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 634 635 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 636 ipr_cmd->done(ipr_cmd); 637 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 638 } 639 640 /** 641 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse 642 * @ipr_cmd: ipr command struct 643 * 644 * Return value: 645 * none 646 **/ 647 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 648 { 649 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 650 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 651 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64; 652 dma_addr_t dma_addr = ipr_cmd->dma_addr; 653 int hrrq_id; 654 655 hrrq_id = ioarcb->cmd_pkt.hrrq_id; 656 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 657 ioarcb->cmd_pkt.hrrq_id = hrrq_id; 658 ioarcb->data_transfer_length = 0; 659 ioarcb->read_data_transfer_length = 0; 660 ioarcb->ioadl_len = 0; 661 ioarcb->read_ioadl_len = 0; 662 663 if (ipr_cmd->ioa_cfg->sis64) { 664 ioarcb->u.sis64_addr_data.data_ioadl_addr = 665 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 666 ioasa64->u.gata.status = 0; 667 } else { 668 ioarcb->write_ioadl_addr = 669 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 670 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 671 ioasa->u.gata.status = 0; 672 } 673 674 ioasa->hdr.ioasc = 0; 675 ioasa->hdr.residual_data_len = 0; 676 ipr_cmd->scsi_cmd = NULL; 677 ipr_cmd->qc = NULL; 678 ipr_cmd->sense_buffer[0] = 0; 679 ipr_cmd->dma_use_sg = 0; 680 } 681 682 /** 683 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block 684 * @ipr_cmd: ipr command struct 685 * 686 * Return value: 687 * none 688 **/ 689 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd, 690 void (*fast_done) (struct ipr_cmnd *)) 691 { 692 ipr_reinit_ipr_cmnd(ipr_cmd); 693 ipr_cmd->u.scratch = 0; 694 ipr_cmd->sibling = NULL; 695 ipr_cmd->eh_comp = NULL; 696 ipr_cmd->fast_done = fast_done; 697 init_timer(&ipr_cmd->timer); 698 } 699 700 /** 701 * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block 702 * @ioa_cfg: ioa config struct 703 * 704 * Return value: 705 * pointer to ipr command struct 706 **/ 707 static 708 struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue *hrrq) 709 { 710 struct ipr_cmnd *ipr_cmd = NULL; 711 712 if (likely(!list_empty(&hrrq->hrrq_free_q))) { 713 ipr_cmd = list_entry(hrrq->hrrq_free_q.next, 714 struct ipr_cmnd, queue); 715 list_del(&ipr_cmd->queue); 716 } 717 718 719 return ipr_cmd; 720 } 721 722 /** 723 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it 724 * @ioa_cfg: ioa config struct 725 * 726 * Return value: 727 * pointer to ipr command struct 728 **/ 729 static 730 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) 731 { 732 struct ipr_cmnd *ipr_cmd = 733 __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]); 734 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done); 735 return ipr_cmd; 736 } 737 738 /** 739 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts 740 * @ioa_cfg: ioa config struct 741 * @clr_ints: interrupts to clear 742 * 743 * This function masks all interrupts on the adapter, then clears the 744 * interrupts specified in the mask 745 * 746 * Return value: 747 * none 748 **/ 749 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, 750 u32 clr_ints) 751 { 752 volatile u32 int_reg; 753 int i; 754 755 /* Stop new interrupts */ 756 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 757 spin_lock(&ioa_cfg->hrrq[i]._lock); 758 ioa_cfg->hrrq[i].allow_interrupts = 0; 759 spin_unlock(&ioa_cfg->hrrq[i]._lock); 760 } 761 wmb(); 762 763 /* Set interrupt mask to stop all new interrupts */ 764 if (ioa_cfg->sis64) 765 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg); 766 else 767 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); 768 769 /* Clear any pending interrupts */ 770 if (ioa_cfg->sis64) 771 writel(~0, ioa_cfg->regs.clr_interrupt_reg); 772 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32); 773 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 774 } 775 776 /** 777 * ipr_save_pcix_cmd_reg - Save PCI-X command register 778 * @ioa_cfg: ioa config struct 779 * 780 * Return value: 781 * 0 on success / -EIO on failure 782 **/ 783 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 784 { 785 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 786 787 if (pcix_cmd_reg == 0) 788 return 0; 789 790 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 791 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 792 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 793 return -EIO; 794 } 795 796 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; 797 return 0; 798 } 799 800 /** 801 * ipr_set_pcix_cmd_reg - Setup PCI-X command register 802 * @ioa_cfg: ioa config struct 803 * 804 * Return value: 805 * 0 on success / -EIO on failure 806 **/ 807 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 808 { 809 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 810 811 if (pcix_cmd_reg) { 812 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 813 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 814 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); 815 return -EIO; 816 } 817 } 818 819 return 0; 820 } 821 822 /** 823 * __ipr_sata_eh_done - done function for aborted SATA commands 824 * @ipr_cmd: ipr command struct 825 * 826 * This function is invoked for ops generated to SATA 827 * devices which are being aborted. 828 * 829 * Return value: 830 * none 831 **/ 832 static void __ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd) 833 { 834 struct ata_queued_cmd *qc = ipr_cmd->qc; 835 struct ipr_sata_port *sata_port = qc->ap->private_data; 836 837 qc->err_mask |= AC_ERR_OTHER; 838 sata_port->ioasa.status |= ATA_BUSY; 839 ata_qc_complete(qc); 840 if (ipr_cmd->eh_comp) 841 complete(ipr_cmd->eh_comp); 842 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 843 } 844 845 /** 846 * ipr_sata_eh_done - done function for aborted SATA commands 847 * @ipr_cmd: ipr command struct 848 * 849 * This function is invoked for ops generated to SATA 850 * devices which are being aborted. 851 * 852 * Return value: 853 * none 854 **/ 855 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd) 856 { 857 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq; 858 unsigned long hrrq_flags; 859 860 spin_lock_irqsave(&hrrq->_lock, hrrq_flags); 861 __ipr_sata_eh_done(ipr_cmd); 862 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags); 863 } 864 865 /** 866 * __ipr_scsi_eh_done - mid-layer done function for aborted ops 867 * @ipr_cmd: ipr command struct 868 * 869 * This function is invoked by the interrupt handler for 870 * ops generated by the SCSI mid-layer which are being aborted. 871 * 872 * Return value: 873 * none 874 **/ 875 static void __ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 876 { 877 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 878 879 scsi_cmd->result |= (DID_ERROR << 16); 880 881 scsi_dma_unmap(ipr_cmd->scsi_cmd); 882 scsi_cmd->scsi_done(scsi_cmd); 883 if (ipr_cmd->eh_comp) 884 complete(ipr_cmd->eh_comp); 885 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 886 } 887 888 /** 889 * ipr_scsi_eh_done - mid-layer done function for aborted ops 890 * @ipr_cmd: ipr command struct 891 * 892 * This function is invoked by the interrupt handler for 893 * ops generated by the SCSI mid-layer which are being aborted. 894 * 895 * Return value: 896 * none 897 **/ 898 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 899 { 900 unsigned long hrrq_flags; 901 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq; 902 903 spin_lock_irqsave(&hrrq->_lock, hrrq_flags); 904 __ipr_scsi_eh_done(ipr_cmd); 905 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags); 906 } 907 908 /** 909 * ipr_fail_all_ops - Fails all outstanding ops. 910 * @ioa_cfg: ioa config struct 911 * 912 * This function fails all outstanding ops. 913 * 914 * Return value: 915 * none 916 **/ 917 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) 918 { 919 struct ipr_cmnd *ipr_cmd, *temp; 920 struct ipr_hrr_queue *hrrq; 921 922 ENTER; 923 for_each_hrrq(hrrq, ioa_cfg) { 924 spin_lock(&hrrq->_lock); 925 list_for_each_entry_safe(ipr_cmd, 926 temp, &hrrq->hrrq_pending_q, queue) { 927 list_del(&ipr_cmd->queue); 928 929 ipr_cmd->s.ioasa.hdr.ioasc = 930 cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); 931 ipr_cmd->s.ioasa.hdr.ilid = 932 cpu_to_be32(IPR_DRIVER_ILID); 933 934 if (ipr_cmd->scsi_cmd) 935 ipr_cmd->done = __ipr_scsi_eh_done; 936 else if (ipr_cmd->qc) 937 ipr_cmd->done = __ipr_sata_eh_done; 938 939 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, 940 IPR_IOASC_IOA_WAS_RESET); 941 del_timer(&ipr_cmd->timer); 942 ipr_cmd->done(ipr_cmd); 943 } 944 spin_unlock(&hrrq->_lock); 945 } 946 LEAVE; 947 } 948 949 /** 950 * ipr_send_command - Send driver initiated requests. 951 * @ipr_cmd: ipr command struct 952 * 953 * This function sends a command to the adapter using the correct write call. 954 * In the case of sis64, calculate the ioarcb size required. Then or in the 955 * appropriate bits. 956 * 957 * Return value: 958 * none 959 **/ 960 static void ipr_send_command(struct ipr_cmnd *ipr_cmd) 961 { 962 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 963 dma_addr_t send_dma_addr = ipr_cmd->dma_addr; 964 965 if (ioa_cfg->sis64) { 966 /* The default size is 256 bytes */ 967 send_dma_addr |= 0x1; 968 969 /* If the number of ioadls * size of ioadl > 128 bytes, 970 then use a 512 byte ioarcb */ 971 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 ) 972 send_dma_addr |= 0x4; 973 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg); 974 } else 975 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg); 976 } 977 978 /** 979 * ipr_do_req - Send driver initiated requests. 980 * @ipr_cmd: ipr command struct 981 * @done: done function 982 * @timeout_func: timeout function 983 * @timeout: timeout value 984 * 985 * This function sends the specified command to the adapter with the 986 * timeout given. The done function is invoked on command completion. 987 * 988 * Return value: 989 * none 990 **/ 991 static void ipr_do_req(struct ipr_cmnd *ipr_cmd, 992 void (*done) (struct ipr_cmnd *), 993 void (*timeout_func) (struct ipr_cmnd *), u32 timeout) 994 { 995 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 996 997 ipr_cmd->done = done; 998 999 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 1000 ipr_cmd->timer.expires = jiffies + timeout; 1001 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func; 1002 1003 add_timer(&ipr_cmd->timer); 1004 1005 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); 1006 1007 ipr_send_command(ipr_cmd); 1008 } 1009 1010 /** 1011 * ipr_internal_cmd_done - Op done function for an internally generated op. 1012 * @ipr_cmd: ipr command struct 1013 * 1014 * This function is the op done function for an internally generated, 1015 * blocking op. It simply wakes the sleeping thread. 1016 * 1017 * Return value: 1018 * none 1019 **/ 1020 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) 1021 { 1022 if (ipr_cmd->sibling) 1023 ipr_cmd->sibling = NULL; 1024 else 1025 complete(&ipr_cmd->completion); 1026 } 1027 1028 /** 1029 * ipr_init_ioadl - initialize the ioadl for the correct SIS type 1030 * @ipr_cmd: ipr command struct 1031 * @dma_addr: dma address 1032 * @len: transfer length 1033 * @flags: ioadl flag value 1034 * 1035 * This function initializes an ioadl in the case where there is only a single 1036 * descriptor. 1037 * 1038 * Return value: 1039 * nothing 1040 **/ 1041 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr, 1042 u32 len, int flags) 1043 { 1044 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 1045 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 1046 1047 ipr_cmd->dma_use_sg = 1; 1048 1049 if (ipr_cmd->ioa_cfg->sis64) { 1050 ioadl64->flags = cpu_to_be32(flags); 1051 ioadl64->data_len = cpu_to_be32(len); 1052 ioadl64->address = cpu_to_be64(dma_addr); 1053 1054 ipr_cmd->ioarcb.ioadl_len = 1055 cpu_to_be32(sizeof(struct ipr_ioadl64_desc)); 1056 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len); 1057 } else { 1058 ioadl->flags_and_data_len = cpu_to_be32(flags | len); 1059 ioadl->address = cpu_to_be32(dma_addr); 1060 1061 if (flags == IPR_IOADL_FLAGS_READ_LAST) { 1062 ipr_cmd->ioarcb.read_ioadl_len = 1063 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 1064 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len); 1065 } else { 1066 ipr_cmd->ioarcb.ioadl_len = 1067 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 1068 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len); 1069 } 1070 } 1071 } 1072 1073 /** 1074 * ipr_send_blocking_cmd - Send command and sleep on its completion. 1075 * @ipr_cmd: ipr command struct 1076 * @timeout_func: function to invoke if command times out 1077 * @timeout: timeout 1078 * 1079 * Return value: 1080 * none 1081 **/ 1082 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, 1083 void (*timeout_func) (struct ipr_cmnd *ipr_cmd), 1084 u32 timeout) 1085 { 1086 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1087 1088 init_completion(&ipr_cmd->completion); 1089 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); 1090 1091 spin_unlock_irq(ioa_cfg->host->host_lock); 1092 wait_for_completion(&ipr_cmd->completion); 1093 spin_lock_irq(ioa_cfg->host->host_lock); 1094 } 1095 1096 static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg) 1097 { 1098 unsigned int hrrq; 1099 1100 if (ioa_cfg->hrrq_num == 1) 1101 hrrq = 0; 1102 else { 1103 hrrq = atomic_add_return(1, &ioa_cfg->hrrq_index); 1104 hrrq = (hrrq % (ioa_cfg->hrrq_num - 1)) + 1; 1105 } 1106 return hrrq; 1107 } 1108 1109 /** 1110 * ipr_send_hcam - Send an HCAM to the adapter. 1111 * @ioa_cfg: ioa config struct 1112 * @type: HCAM type 1113 * @hostrcb: hostrcb struct 1114 * 1115 * This function will send a Host Controlled Async command to the adapter. 1116 * If HCAMs are currently not allowed to be issued to the adapter, it will 1117 * place the hostrcb on the free queue. 1118 * 1119 * Return value: 1120 * none 1121 **/ 1122 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, 1123 struct ipr_hostrcb *hostrcb) 1124 { 1125 struct ipr_cmnd *ipr_cmd; 1126 struct ipr_ioarcb *ioarcb; 1127 1128 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) { 1129 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 1130 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 1131 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); 1132 1133 ipr_cmd->u.hostrcb = hostrcb; 1134 ioarcb = &ipr_cmd->ioarcb; 1135 1136 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 1137 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; 1138 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; 1139 ioarcb->cmd_pkt.cdb[1] = type; 1140 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; 1141 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; 1142 1143 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma, 1144 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST); 1145 1146 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) 1147 ipr_cmd->done = ipr_process_ccn; 1148 else 1149 ipr_cmd->done = ipr_process_error; 1150 1151 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); 1152 1153 ipr_send_command(ipr_cmd); 1154 } else { 1155 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 1156 } 1157 } 1158 1159 /** 1160 * ipr_update_ata_class - Update the ata class in the resource entry 1161 * @res: resource entry struct 1162 * @proto: cfgte device bus protocol value 1163 * 1164 * Return value: 1165 * none 1166 **/ 1167 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto) 1168 { 1169 switch (proto) { 1170 case IPR_PROTO_SATA: 1171 case IPR_PROTO_SAS_STP: 1172 res->ata_class = ATA_DEV_ATA; 1173 break; 1174 case IPR_PROTO_SATA_ATAPI: 1175 case IPR_PROTO_SAS_STP_ATAPI: 1176 res->ata_class = ATA_DEV_ATAPI; 1177 break; 1178 default: 1179 res->ata_class = ATA_DEV_UNKNOWN; 1180 break; 1181 }; 1182 } 1183 1184 /** 1185 * ipr_init_res_entry - Initialize a resource entry struct. 1186 * @res: resource entry struct 1187 * @cfgtew: config table entry wrapper struct 1188 * 1189 * Return value: 1190 * none 1191 **/ 1192 static void ipr_init_res_entry(struct ipr_resource_entry *res, 1193 struct ipr_config_table_entry_wrapper *cfgtew) 1194 { 1195 int found = 0; 1196 unsigned int proto; 1197 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg; 1198 struct ipr_resource_entry *gscsi_res = NULL; 1199 1200 res->needs_sync_complete = 0; 1201 res->in_erp = 0; 1202 res->add_to_ml = 0; 1203 res->del_from_ml = 0; 1204 res->resetting_device = 0; 1205 res->reset_occurred = 0; 1206 res->sdev = NULL; 1207 res->sata_port = NULL; 1208 1209 if (ioa_cfg->sis64) { 1210 proto = cfgtew->u.cfgte64->proto; 1211 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags); 1212 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags); 1213 res->qmodel = IPR_QUEUEING_MODEL64(res); 1214 res->type = cfgtew->u.cfgte64->res_type; 1215 1216 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path, 1217 sizeof(res->res_path)); 1218 1219 res->bus = 0; 1220 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1221 sizeof(res->dev_lun.scsi_lun)); 1222 res->lun = scsilun_to_int(&res->dev_lun); 1223 1224 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) { 1225 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) { 1226 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) { 1227 found = 1; 1228 res->target = gscsi_res->target; 1229 break; 1230 } 1231 } 1232 if (!found) { 1233 res->target = find_first_zero_bit(ioa_cfg->target_ids, 1234 ioa_cfg->max_devs_supported); 1235 set_bit(res->target, ioa_cfg->target_ids); 1236 } 1237 } else if (res->type == IPR_RES_TYPE_IOAFP) { 1238 res->bus = IPR_IOAFP_VIRTUAL_BUS; 1239 res->target = 0; 1240 } else if (res->type == IPR_RES_TYPE_ARRAY) { 1241 res->bus = IPR_ARRAY_VIRTUAL_BUS; 1242 res->target = find_first_zero_bit(ioa_cfg->array_ids, 1243 ioa_cfg->max_devs_supported); 1244 set_bit(res->target, ioa_cfg->array_ids); 1245 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) { 1246 res->bus = IPR_VSET_VIRTUAL_BUS; 1247 res->target = find_first_zero_bit(ioa_cfg->vset_ids, 1248 ioa_cfg->max_devs_supported); 1249 set_bit(res->target, ioa_cfg->vset_ids); 1250 } else { 1251 res->target = find_first_zero_bit(ioa_cfg->target_ids, 1252 ioa_cfg->max_devs_supported); 1253 set_bit(res->target, ioa_cfg->target_ids); 1254 } 1255 } else { 1256 proto = cfgtew->u.cfgte->proto; 1257 res->qmodel = IPR_QUEUEING_MODEL(res); 1258 res->flags = cfgtew->u.cfgte->flags; 1259 if (res->flags & IPR_IS_IOA_RESOURCE) 1260 res->type = IPR_RES_TYPE_IOAFP; 1261 else 1262 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f; 1263 1264 res->bus = cfgtew->u.cfgte->res_addr.bus; 1265 res->target = cfgtew->u.cfgte->res_addr.target; 1266 res->lun = cfgtew->u.cfgte->res_addr.lun; 1267 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn); 1268 } 1269 1270 ipr_update_ata_class(res, proto); 1271 } 1272 1273 /** 1274 * ipr_is_same_device - Determine if two devices are the same. 1275 * @res: resource entry struct 1276 * @cfgtew: config table entry wrapper struct 1277 * 1278 * Return value: 1279 * 1 if the devices are the same / 0 otherwise 1280 **/ 1281 static int ipr_is_same_device(struct ipr_resource_entry *res, 1282 struct ipr_config_table_entry_wrapper *cfgtew) 1283 { 1284 if (res->ioa_cfg->sis64) { 1285 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id, 1286 sizeof(cfgtew->u.cfgte64->dev_id)) && 1287 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1288 sizeof(cfgtew->u.cfgte64->lun))) { 1289 return 1; 1290 } 1291 } else { 1292 if (res->bus == cfgtew->u.cfgte->res_addr.bus && 1293 res->target == cfgtew->u.cfgte->res_addr.target && 1294 res->lun == cfgtew->u.cfgte->res_addr.lun) 1295 return 1; 1296 } 1297 1298 return 0; 1299 } 1300 1301 /** 1302 * __ipr_format_res_path - Format the resource path for printing. 1303 * @res_path: resource path 1304 * @buf: buffer 1305 * @len: length of buffer provided 1306 * 1307 * Return value: 1308 * pointer to buffer 1309 **/ 1310 static char *__ipr_format_res_path(u8 *res_path, char *buffer, int len) 1311 { 1312 int i; 1313 char *p = buffer; 1314 1315 *p = '\0'; 1316 p += snprintf(p, buffer + len - p, "%02X", res_path[0]); 1317 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++) 1318 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]); 1319 1320 return buffer; 1321 } 1322 1323 /** 1324 * ipr_format_res_path - Format the resource path for printing. 1325 * @ioa_cfg: ioa config struct 1326 * @res_path: resource path 1327 * @buf: buffer 1328 * @len: length of buffer provided 1329 * 1330 * Return value: 1331 * pointer to buffer 1332 **/ 1333 static char *ipr_format_res_path(struct ipr_ioa_cfg *ioa_cfg, 1334 u8 *res_path, char *buffer, int len) 1335 { 1336 char *p = buffer; 1337 1338 *p = '\0'; 1339 p += snprintf(p, buffer + len - p, "%d/", ioa_cfg->host->host_no); 1340 __ipr_format_res_path(res_path, p, len - (buffer - p)); 1341 return buffer; 1342 } 1343 1344 /** 1345 * ipr_update_res_entry - Update the resource entry. 1346 * @res: resource entry struct 1347 * @cfgtew: config table entry wrapper struct 1348 * 1349 * Return value: 1350 * none 1351 **/ 1352 static void ipr_update_res_entry(struct ipr_resource_entry *res, 1353 struct ipr_config_table_entry_wrapper *cfgtew) 1354 { 1355 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1356 unsigned int proto; 1357 int new_path = 0; 1358 1359 if (res->ioa_cfg->sis64) { 1360 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags); 1361 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags); 1362 res->type = cfgtew->u.cfgte64->res_type; 1363 1364 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data, 1365 sizeof(struct ipr_std_inq_data)); 1366 1367 res->qmodel = IPR_QUEUEING_MODEL64(res); 1368 proto = cfgtew->u.cfgte64->proto; 1369 res->res_handle = cfgtew->u.cfgte64->res_handle; 1370 res->dev_id = cfgtew->u.cfgte64->dev_id; 1371 1372 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1373 sizeof(res->dev_lun.scsi_lun)); 1374 1375 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path, 1376 sizeof(res->res_path))) { 1377 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path, 1378 sizeof(res->res_path)); 1379 new_path = 1; 1380 } 1381 1382 if (res->sdev && new_path) 1383 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n", 1384 ipr_format_res_path(res->ioa_cfg, 1385 res->res_path, buffer, sizeof(buffer))); 1386 } else { 1387 res->flags = cfgtew->u.cfgte->flags; 1388 if (res->flags & IPR_IS_IOA_RESOURCE) 1389 res->type = IPR_RES_TYPE_IOAFP; 1390 else 1391 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f; 1392 1393 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data, 1394 sizeof(struct ipr_std_inq_data)); 1395 1396 res->qmodel = IPR_QUEUEING_MODEL(res); 1397 proto = cfgtew->u.cfgte->proto; 1398 res->res_handle = cfgtew->u.cfgte->res_handle; 1399 } 1400 1401 ipr_update_ata_class(res, proto); 1402 } 1403 1404 /** 1405 * ipr_clear_res_target - Clear the bit in the bit map representing the target 1406 * for the resource. 1407 * @res: resource entry struct 1408 * @cfgtew: config table entry wrapper struct 1409 * 1410 * Return value: 1411 * none 1412 **/ 1413 static void ipr_clear_res_target(struct ipr_resource_entry *res) 1414 { 1415 struct ipr_resource_entry *gscsi_res = NULL; 1416 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg; 1417 1418 if (!ioa_cfg->sis64) 1419 return; 1420 1421 if (res->bus == IPR_ARRAY_VIRTUAL_BUS) 1422 clear_bit(res->target, ioa_cfg->array_ids); 1423 else if (res->bus == IPR_VSET_VIRTUAL_BUS) 1424 clear_bit(res->target, ioa_cfg->vset_ids); 1425 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) { 1426 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) 1427 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res) 1428 return; 1429 clear_bit(res->target, ioa_cfg->target_ids); 1430 1431 } else if (res->bus == 0) 1432 clear_bit(res->target, ioa_cfg->target_ids); 1433 } 1434 1435 /** 1436 * ipr_handle_config_change - Handle a config change from the adapter 1437 * @ioa_cfg: ioa config struct 1438 * @hostrcb: hostrcb 1439 * 1440 * Return value: 1441 * none 1442 **/ 1443 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, 1444 struct ipr_hostrcb *hostrcb) 1445 { 1446 struct ipr_resource_entry *res = NULL; 1447 struct ipr_config_table_entry_wrapper cfgtew; 1448 __be32 cc_res_handle; 1449 1450 u32 is_ndn = 1; 1451 1452 if (ioa_cfg->sis64) { 1453 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64; 1454 cc_res_handle = cfgtew.u.cfgte64->res_handle; 1455 } else { 1456 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte; 1457 cc_res_handle = cfgtew.u.cfgte->res_handle; 1458 } 1459 1460 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1461 if (res->res_handle == cc_res_handle) { 1462 is_ndn = 0; 1463 break; 1464 } 1465 } 1466 1467 if (is_ndn) { 1468 if (list_empty(&ioa_cfg->free_res_q)) { 1469 ipr_send_hcam(ioa_cfg, 1470 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 1471 hostrcb); 1472 return; 1473 } 1474 1475 res = list_entry(ioa_cfg->free_res_q.next, 1476 struct ipr_resource_entry, queue); 1477 1478 list_del(&res->queue); 1479 ipr_init_res_entry(res, &cfgtew); 1480 list_add_tail(&res->queue, &ioa_cfg->used_res_q); 1481 } 1482 1483 ipr_update_res_entry(res, &cfgtew); 1484 1485 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { 1486 if (res->sdev) { 1487 res->del_from_ml = 1; 1488 res->res_handle = IPR_INVALID_RES_HANDLE; 1489 schedule_work(&ioa_cfg->work_q); 1490 } else { 1491 ipr_clear_res_target(res); 1492 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 1493 } 1494 } else if (!res->sdev || res->del_from_ml) { 1495 res->add_to_ml = 1; 1496 schedule_work(&ioa_cfg->work_q); 1497 } 1498 1499 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 1500 } 1501 1502 /** 1503 * ipr_process_ccn - Op done function for a CCN. 1504 * @ipr_cmd: ipr command struct 1505 * 1506 * This function is the op done function for a configuration 1507 * change notification host controlled async from the adapter. 1508 * 1509 * Return value: 1510 * none 1511 **/ 1512 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) 1513 { 1514 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1515 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 1516 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 1517 1518 list_del_init(&hostrcb->queue); 1519 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 1520 1521 if (ioasc) { 1522 if (ioasc != IPR_IOASC_IOA_WAS_RESET && 1523 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) 1524 dev_err(&ioa_cfg->pdev->dev, 1525 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 1526 1527 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 1528 } else { 1529 ipr_handle_config_change(ioa_cfg, hostrcb); 1530 } 1531 } 1532 1533 /** 1534 * strip_and_pad_whitespace - Strip and pad trailing whitespace. 1535 * @i: index into buffer 1536 * @buf: string to modify 1537 * 1538 * This function will strip all trailing whitespace, pad the end 1539 * of the string with a single space, and NULL terminate the string. 1540 * 1541 * Return value: 1542 * new length of string 1543 **/ 1544 static int strip_and_pad_whitespace(int i, char *buf) 1545 { 1546 while (i && buf[i] == ' ') 1547 i--; 1548 buf[i+1] = ' '; 1549 buf[i+2] = '\0'; 1550 return i + 2; 1551 } 1552 1553 /** 1554 * ipr_log_vpd_compact - Log the passed extended VPD compactly. 1555 * @prefix: string to print at start of printk 1556 * @hostrcb: hostrcb pointer 1557 * @vpd: vendor/product id/sn struct 1558 * 1559 * Return value: 1560 * none 1561 **/ 1562 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 1563 struct ipr_vpd *vpd) 1564 { 1565 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3]; 1566 int i = 0; 1567 1568 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 1569 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer); 1570 1571 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN); 1572 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer); 1573 1574 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN); 1575 buffer[IPR_SERIAL_NUM_LEN + i] = '\0'; 1576 1577 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer); 1578 } 1579 1580 /** 1581 * ipr_log_vpd - Log the passed VPD to the error log. 1582 * @vpd: vendor/product id/sn struct 1583 * 1584 * Return value: 1585 * none 1586 **/ 1587 static void ipr_log_vpd(struct ipr_vpd *vpd) 1588 { 1589 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN 1590 + IPR_SERIAL_NUM_LEN]; 1591 1592 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 1593 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id, 1594 IPR_PROD_ID_LEN); 1595 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; 1596 ipr_err("Vendor/Product ID: %s\n", buffer); 1597 1598 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN); 1599 buffer[IPR_SERIAL_NUM_LEN] = '\0'; 1600 ipr_err(" Serial Number: %s\n", buffer); 1601 } 1602 1603 /** 1604 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly. 1605 * @prefix: string to print at start of printk 1606 * @hostrcb: hostrcb pointer 1607 * @vpd: vendor/product id/sn/wwn struct 1608 * 1609 * Return value: 1610 * none 1611 **/ 1612 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 1613 struct ipr_ext_vpd *vpd) 1614 { 1615 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd); 1616 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix, 1617 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1])); 1618 } 1619 1620 /** 1621 * ipr_log_ext_vpd - Log the passed extended VPD to the error log. 1622 * @vpd: vendor/product id/sn/wwn struct 1623 * 1624 * Return value: 1625 * none 1626 **/ 1627 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd) 1628 { 1629 ipr_log_vpd(&vpd->vpd); 1630 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]), 1631 be32_to_cpu(vpd->wwid[1])); 1632 } 1633 1634 /** 1635 * ipr_log_enhanced_cache_error - Log a cache error. 1636 * @ioa_cfg: ioa config struct 1637 * @hostrcb: hostrcb struct 1638 * 1639 * Return value: 1640 * none 1641 **/ 1642 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1643 struct ipr_hostrcb *hostrcb) 1644 { 1645 struct ipr_hostrcb_type_12_error *error; 1646 1647 if (ioa_cfg->sis64) 1648 error = &hostrcb->hcam.u.error64.u.type_12_error; 1649 else 1650 error = &hostrcb->hcam.u.error.u.type_12_error; 1651 1652 ipr_err("-----Current Configuration-----\n"); 1653 ipr_err("Cache Directory Card Information:\n"); 1654 ipr_log_ext_vpd(&error->ioa_vpd); 1655 ipr_err("Adapter Card Information:\n"); 1656 ipr_log_ext_vpd(&error->cfc_vpd); 1657 1658 ipr_err("-----Expected Configuration-----\n"); 1659 ipr_err("Cache Directory Card Information:\n"); 1660 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd); 1661 ipr_err("Adapter Card Information:\n"); 1662 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd); 1663 1664 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1665 be32_to_cpu(error->ioa_data[0]), 1666 be32_to_cpu(error->ioa_data[1]), 1667 be32_to_cpu(error->ioa_data[2])); 1668 } 1669 1670 /** 1671 * ipr_log_cache_error - Log a cache error. 1672 * @ioa_cfg: ioa config struct 1673 * @hostrcb: hostrcb struct 1674 * 1675 * Return value: 1676 * none 1677 **/ 1678 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1679 struct ipr_hostrcb *hostrcb) 1680 { 1681 struct ipr_hostrcb_type_02_error *error = 1682 &hostrcb->hcam.u.error.u.type_02_error; 1683 1684 ipr_err("-----Current Configuration-----\n"); 1685 ipr_err("Cache Directory Card Information:\n"); 1686 ipr_log_vpd(&error->ioa_vpd); 1687 ipr_err("Adapter Card Information:\n"); 1688 ipr_log_vpd(&error->cfc_vpd); 1689 1690 ipr_err("-----Expected Configuration-----\n"); 1691 ipr_err("Cache Directory Card Information:\n"); 1692 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd); 1693 ipr_err("Adapter Card Information:\n"); 1694 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd); 1695 1696 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1697 be32_to_cpu(error->ioa_data[0]), 1698 be32_to_cpu(error->ioa_data[1]), 1699 be32_to_cpu(error->ioa_data[2])); 1700 } 1701 1702 /** 1703 * ipr_log_enhanced_config_error - Log a configuration error. 1704 * @ioa_cfg: ioa config struct 1705 * @hostrcb: hostrcb struct 1706 * 1707 * Return value: 1708 * none 1709 **/ 1710 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg, 1711 struct ipr_hostrcb *hostrcb) 1712 { 1713 int errors_logged, i; 1714 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry; 1715 struct ipr_hostrcb_type_13_error *error; 1716 1717 error = &hostrcb->hcam.u.error.u.type_13_error; 1718 errors_logged = be32_to_cpu(error->errors_logged); 1719 1720 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1721 be32_to_cpu(error->errors_detected), errors_logged); 1722 1723 dev_entry = error->dev; 1724 1725 for (i = 0; i < errors_logged; i++, dev_entry++) { 1726 ipr_err_separator; 1727 1728 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1729 ipr_log_ext_vpd(&dev_entry->vpd); 1730 1731 ipr_err("-----New Device Information-----\n"); 1732 ipr_log_ext_vpd(&dev_entry->new_vpd); 1733 1734 ipr_err("Cache Directory Card Information:\n"); 1735 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1736 1737 ipr_err("Adapter Card Information:\n"); 1738 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1739 } 1740 } 1741 1742 /** 1743 * ipr_log_sis64_config_error - Log a device error. 1744 * @ioa_cfg: ioa config struct 1745 * @hostrcb: hostrcb struct 1746 * 1747 * Return value: 1748 * none 1749 **/ 1750 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg, 1751 struct ipr_hostrcb *hostrcb) 1752 { 1753 int errors_logged, i; 1754 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry; 1755 struct ipr_hostrcb_type_23_error *error; 1756 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1757 1758 error = &hostrcb->hcam.u.error64.u.type_23_error; 1759 errors_logged = be32_to_cpu(error->errors_logged); 1760 1761 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1762 be32_to_cpu(error->errors_detected), errors_logged); 1763 1764 dev_entry = error->dev; 1765 1766 for (i = 0; i < errors_logged; i++, dev_entry++) { 1767 ipr_err_separator; 1768 1769 ipr_err("Device %d : %s", i + 1, 1770 __ipr_format_res_path(dev_entry->res_path, 1771 buffer, sizeof(buffer))); 1772 ipr_log_ext_vpd(&dev_entry->vpd); 1773 1774 ipr_err("-----New Device Information-----\n"); 1775 ipr_log_ext_vpd(&dev_entry->new_vpd); 1776 1777 ipr_err("Cache Directory Card Information:\n"); 1778 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1779 1780 ipr_err("Adapter Card Information:\n"); 1781 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1782 } 1783 } 1784 1785 /** 1786 * ipr_log_config_error - Log a configuration error. 1787 * @ioa_cfg: ioa config struct 1788 * @hostrcb: hostrcb struct 1789 * 1790 * Return value: 1791 * none 1792 **/ 1793 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, 1794 struct ipr_hostrcb *hostrcb) 1795 { 1796 int errors_logged, i; 1797 struct ipr_hostrcb_device_data_entry *dev_entry; 1798 struct ipr_hostrcb_type_03_error *error; 1799 1800 error = &hostrcb->hcam.u.error.u.type_03_error; 1801 errors_logged = be32_to_cpu(error->errors_logged); 1802 1803 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1804 be32_to_cpu(error->errors_detected), errors_logged); 1805 1806 dev_entry = error->dev; 1807 1808 for (i = 0; i < errors_logged; i++, dev_entry++) { 1809 ipr_err_separator; 1810 1811 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1812 ipr_log_vpd(&dev_entry->vpd); 1813 1814 ipr_err("-----New Device Information-----\n"); 1815 ipr_log_vpd(&dev_entry->new_vpd); 1816 1817 ipr_err("Cache Directory Card Information:\n"); 1818 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd); 1819 1820 ipr_err("Adapter Card Information:\n"); 1821 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd); 1822 1823 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", 1824 be32_to_cpu(dev_entry->ioa_data[0]), 1825 be32_to_cpu(dev_entry->ioa_data[1]), 1826 be32_to_cpu(dev_entry->ioa_data[2]), 1827 be32_to_cpu(dev_entry->ioa_data[3]), 1828 be32_to_cpu(dev_entry->ioa_data[4])); 1829 } 1830 } 1831 1832 /** 1833 * ipr_log_enhanced_array_error - Log an array configuration error. 1834 * @ioa_cfg: ioa config struct 1835 * @hostrcb: hostrcb struct 1836 * 1837 * Return value: 1838 * none 1839 **/ 1840 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg, 1841 struct ipr_hostrcb *hostrcb) 1842 { 1843 int i, num_entries; 1844 struct ipr_hostrcb_type_14_error *error; 1845 struct ipr_hostrcb_array_data_entry_enhanced *array_entry; 1846 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1847 1848 error = &hostrcb->hcam.u.error.u.type_14_error; 1849 1850 ipr_err_separator; 1851 1852 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1853 error->protection_level, 1854 ioa_cfg->host->host_no, 1855 error->last_func_vset_res_addr.bus, 1856 error->last_func_vset_res_addr.target, 1857 error->last_func_vset_res_addr.lun); 1858 1859 ipr_err_separator; 1860 1861 array_entry = error->array_member; 1862 num_entries = min_t(u32, be32_to_cpu(error->num_entries), 1863 ARRAY_SIZE(error->array_member)); 1864 1865 for (i = 0; i < num_entries; i++, array_entry++) { 1866 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1867 continue; 1868 1869 if (be32_to_cpu(error->exposed_mode_adn) == i) 1870 ipr_err("Exposed Array Member %d:\n", i); 1871 else 1872 ipr_err("Array Member %d:\n", i); 1873 1874 ipr_log_ext_vpd(&array_entry->vpd); 1875 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1876 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1877 "Expected Location"); 1878 1879 ipr_err_separator; 1880 } 1881 } 1882 1883 /** 1884 * ipr_log_array_error - Log an array configuration error. 1885 * @ioa_cfg: ioa config struct 1886 * @hostrcb: hostrcb struct 1887 * 1888 * Return value: 1889 * none 1890 **/ 1891 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, 1892 struct ipr_hostrcb *hostrcb) 1893 { 1894 int i; 1895 struct ipr_hostrcb_type_04_error *error; 1896 struct ipr_hostrcb_array_data_entry *array_entry; 1897 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1898 1899 error = &hostrcb->hcam.u.error.u.type_04_error; 1900 1901 ipr_err_separator; 1902 1903 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1904 error->protection_level, 1905 ioa_cfg->host->host_no, 1906 error->last_func_vset_res_addr.bus, 1907 error->last_func_vset_res_addr.target, 1908 error->last_func_vset_res_addr.lun); 1909 1910 ipr_err_separator; 1911 1912 array_entry = error->array_member; 1913 1914 for (i = 0; i < 18; i++) { 1915 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1916 continue; 1917 1918 if (be32_to_cpu(error->exposed_mode_adn) == i) 1919 ipr_err("Exposed Array Member %d:\n", i); 1920 else 1921 ipr_err("Array Member %d:\n", i); 1922 1923 ipr_log_vpd(&array_entry->vpd); 1924 1925 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1926 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1927 "Expected Location"); 1928 1929 ipr_err_separator; 1930 1931 if (i == 9) 1932 array_entry = error->array_member2; 1933 else 1934 array_entry++; 1935 } 1936 } 1937 1938 /** 1939 * ipr_log_hex_data - Log additional hex IOA error data. 1940 * @ioa_cfg: ioa config struct 1941 * @data: IOA error data 1942 * @len: data length 1943 * 1944 * Return value: 1945 * none 1946 **/ 1947 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, __be32 *data, int len) 1948 { 1949 int i; 1950 1951 if (len == 0) 1952 return; 1953 1954 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 1955 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP); 1956 1957 for (i = 0; i < len / 4; i += 4) { 1958 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 1959 be32_to_cpu(data[i]), 1960 be32_to_cpu(data[i+1]), 1961 be32_to_cpu(data[i+2]), 1962 be32_to_cpu(data[i+3])); 1963 } 1964 } 1965 1966 /** 1967 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error. 1968 * @ioa_cfg: ioa config struct 1969 * @hostrcb: hostrcb struct 1970 * 1971 * Return value: 1972 * none 1973 **/ 1974 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1975 struct ipr_hostrcb *hostrcb) 1976 { 1977 struct ipr_hostrcb_type_17_error *error; 1978 1979 if (ioa_cfg->sis64) 1980 error = &hostrcb->hcam.u.error64.u.type_17_error; 1981 else 1982 error = &hostrcb->hcam.u.error.u.type_17_error; 1983 1984 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1985 strim(error->failure_reason); 1986 1987 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 1988 be32_to_cpu(hostrcb->hcam.u.error.prc)); 1989 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd); 1990 ipr_log_hex_data(ioa_cfg, error->data, 1991 be32_to_cpu(hostrcb->hcam.length) - 1992 (offsetof(struct ipr_hostrcb_error, u) + 1993 offsetof(struct ipr_hostrcb_type_17_error, data))); 1994 } 1995 1996 /** 1997 * ipr_log_dual_ioa_error - Log a dual adapter error. 1998 * @ioa_cfg: ioa config struct 1999 * @hostrcb: hostrcb struct 2000 * 2001 * Return value: 2002 * none 2003 **/ 2004 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 2005 struct ipr_hostrcb *hostrcb) 2006 { 2007 struct ipr_hostrcb_type_07_error *error; 2008 2009 error = &hostrcb->hcam.u.error.u.type_07_error; 2010 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2011 strim(error->failure_reason); 2012 2013 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 2014 be32_to_cpu(hostrcb->hcam.u.error.prc)); 2015 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd); 2016 ipr_log_hex_data(ioa_cfg, error->data, 2017 be32_to_cpu(hostrcb->hcam.length) - 2018 (offsetof(struct ipr_hostrcb_error, u) + 2019 offsetof(struct ipr_hostrcb_type_07_error, data))); 2020 } 2021 2022 static const struct { 2023 u8 active; 2024 char *desc; 2025 } path_active_desc[] = { 2026 { IPR_PATH_NO_INFO, "Path" }, 2027 { IPR_PATH_ACTIVE, "Active path" }, 2028 { IPR_PATH_NOT_ACTIVE, "Inactive path" } 2029 }; 2030 2031 static const struct { 2032 u8 state; 2033 char *desc; 2034 } path_state_desc[] = { 2035 { IPR_PATH_STATE_NO_INFO, "has no path state information available" }, 2036 { IPR_PATH_HEALTHY, "is healthy" }, 2037 { IPR_PATH_DEGRADED, "is degraded" }, 2038 { IPR_PATH_FAILED, "is failed" } 2039 }; 2040 2041 /** 2042 * ipr_log_fabric_path - Log a fabric path error 2043 * @hostrcb: hostrcb struct 2044 * @fabric: fabric descriptor 2045 * 2046 * Return value: 2047 * none 2048 **/ 2049 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb, 2050 struct ipr_hostrcb_fabric_desc *fabric) 2051 { 2052 int i, j; 2053 u8 path_state = fabric->path_state; 2054 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 2055 u8 state = path_state & IPR_PATH_STATE_MASK; 2056 2057 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 2058 if (path_active_desc[i].active != active) 2059 continue; 2060 2061 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 2062 if (path_state_desc[j].state != state) 2063 continue; 2064 2065 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) { 2066 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n", 2067 path_active_desc[i].desc, path_state_desc[j].desc, 2068 fabric->ioa_port); 2069 } else if (fabric->cascaded_expander == 0xff) { 2070 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n", 2071 path_active_desc[i].desc, path_state_desc[j].desc, 2072 fabric->ioa_port, fabric->phy); 2073 } else if (fabric->phy == 0xff) { 2074 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n", 2075 path_active_desc[i].desc, path_state_desc[j].desc, 2076 fabric->ioa_port, fabric->cascaded_expander); 2077 } else { 2078 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n", 2079 path_active_desc[i].desc, path_state_desc[j].desc, 2080 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 2081 } 2082 return; 2083 } 2084 } 2085 2086 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state, 2087 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 2088 } 2089 2090 /** 2091 * ipr_log64_fabric_path - Log a fabric path error 2092 * @hostrcb: hostrcb struct 2093 * @fabric: fabric descriptor 2094 * 2095 * Return value: 2096 * none 2097 **/ 2098 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb, 2099 struct ipr_hostrcb64_fabric_desc *fabric) 2100 { 2101 int i, j; 2102 u8 path_state = fabric->path_state; 2103 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 2104 u8 state = path_state & IPR_PATH_STATE_MASK; 2105 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2106 2107 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 2108 if (path_active_desc[i].active != active) 2109 continue; 2110 2111 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 2112 if (path_state_desc[j].state != state) 2113 continue; 2114 2115 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n", 2116 path_active_desc[i].desc, path_state_desc[j].desc, 2117 ipr_format_res_path(hostrcb->ioa_cfg, 2118 fabric->res_path, 2119 buffer, sizeof(buffer))); 2120 return; 2121 } 2122 } 2123 2124 ipr_err("Path state=%02X Resource Path=%s\n", path_state, 2125 ipr_format_res_path(hostrcb->ioa_cfg, fabric->res_path, 2126 buffer, sizeof(buffer))); 2127 } 2128 2129 static const struct { 2130 u8 type; 2131 char *desc; 2132 } path_type_desc[] = { 2133 { IPR_PATH_CFG_IOA_PORT, "IOA port" }, 2134 { IPR_PATH_CFG_EXP_PORT, "Expander port" }, 2135 { IPR_PATH_CFG_DEVICE_PORT, "Device port" }, 2136 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" } 2137 }; 2138 2139 static const struct { 2140 u8 status; 2141 char *desc; 2142 } path_status_desc[] = { 2143 { IPR_PATH_CFG_NO_PROB, "Functional" }, 2144 { IPR_PATH_CFG_DEGRADED, "Degraded" }, 2145 { IPR_PATH_CFG_FAILED, "Failed" }, 2146 { IPR_PATH_CFG_SUSPECT, "Suspect" }, 2147 { IPR_PATH_NOT_DETECTED, "Missing" }, 2148 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" } 2149 }; 2150 2151 static const char *link_rate[] = { 2152 "unknown", 2153 "disabled", 2154 "phy reset problem", 2155 "spinup hold", 2156 "port selector", 2157 "unknown", 2158 "unknown", 2159 "unknown", 2160 "1.5Gbps", 2161 "3.0Gbps", 2162 "unknown", 2163 "unknown", 2164 "unknown", 2165 "unknown", 2166 "unknown", 2167 "unknown" 2168 }; 2169 2170 /** 2171 * ipr_log_path_elem - Log a fabric path element. 2172 * @hostrcb: hostrcb struct 2173 * @cfg: fabric path element struct 2174 * 2175 * Return value: 2176 * none 2177 **/ 2178 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb, 2179 struct ipr_hostrcb_config_element *cfg) 2180 { 2181 int i, j; 2182 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 2183 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 2184 2185 if (type == IPR_PATH_CFG_NOT_EXIST) 2186 return; 2187 2188 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 2189 if (path_type_desc[i].type != type) 2190 continue; 2191 2192 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 2193 if (path_status_desc[j].status != status) 2194 continue; 2195 2196 if (type == IPR_PATH_CFG_IOA_PORT) { 2197 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n", 2198 path_status_desc[j].desc, path_type_desc[i].desc, 2199 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2200 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2201 } else { 2202 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) { 2203 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n", 2204 path_status_desc[j].desc, path_type_desc[i].desc, 2205 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2206 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2207 } else if (cfg->cascaded_expander == 0xff) { 2208 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, " 2209 "WWN=%08X%08X\n", path_status_desc[j].desc, 2210 path_type_desc[i].desc, cfg->phy, 2211 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2212 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2213 } else if (cfg->phy == 0xff) { 2214 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, " 2215 "WWN=%08X%08X\n", path_status_desc[j].desc, 2216 path_type_desc[i].desc, cfg->cascaded_expander, 2217 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2218 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2219 } else { 2220 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s " 2221 "WWN=%08X%08X\n", path_status_desc[j].desc, 2222 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy, 2223 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2224 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2225 } 2226 } 2227 return; 2228 } 2229 } 2230 2231 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s " 2232 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy, 2233 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2234 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2235 } 2236 2237 /** 2238 * ipr_log64_path_elem - Log a fabric path element. 2239 * @hostrcb: hostrcb struct 2240 * @cfg: fabric path element struct 2241 * 2242 * Return value: 2243 * none 2244 **/ 2245 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb, 2246 struct ipr_hostrcb64_config_element *cfg) 2247 { 2248 int i, j; 2249 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK; 2250 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 2251 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 2252 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2253 2254 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64) 2255 return; 2256 2257 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 2258 if (path_type_desc[i].type != type) 2259 continue; 2260 2261 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 2262 if (path_status_desc[j].status != status) 2263 continue; 2264 2265 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n", 2266 path_status_desc[j].desc, path_type_desc[i].desc, 2267 ipr_format_res_path(hostrcb->ioa_cfg, 2268 cfg->res_path, buffer, sizeof(buffer)), 2269 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2270 be32_to_cpu(cfg->wwid[0]), 2271 be32_to_cpu(cfg->wwid[1])); 2272 return; 2273 } 2274 } 2275 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s " 2276 "WWN=%08X%08X\n", cfg->type_status, 2277 ipr_format_res_path(hostrcb->ioa_cfg, 2278 cfg->res_path, buffer, sizeof(buffer)), 2279 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2280 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2281 } 2282 2283 /** 2284 * ipr_log_fabric_error - Log a fabric error. 2285 * @ioa_cfg: ioa config struct 2286 * @hostrcb: hostrcb struct 2287 * 2288 * Return value: 2289 * none 2290 **/ 2291 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 2292 struct ipr_hostrcb *hostrcb) 2293 { 2294 struct ipr_hostrcb_type_20_error *error; 2295 struct ipr_hostrcb_fabric_desc *fabric; 2296 struct ipr_hostrcb_config_element *cfg; 2297 int i, add_len; 2298 2299 error = &hostrcb->hcam.u.error.u.type_20_error; 2300 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2301 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 2302 2303 add_len = be32_to_cpu(hostrcb->hcam.length) - 2304 (offsetof(struct ipr_hostrcb_error, u) + 2305 offsetof(struct ipr_hostrcb_type_20_error, desc)); 2306 2307 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 2308 ipr_log_fabric_path(hostrcb, fabric); 2309 for_each_fabric_cfg(fabric, cfg) 2310 ipr_log_path_elem(hostrcb, cfg); 2311 2312 add_len -= be16_to_cpu(fabric->length); 2313 fabric = (struct ipr_hostrcb_fabric_desc *) 2314 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 2315 } 2316 2317 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len); 2318 } 2319 2320 /** 2321 * ipr_log_sis64_array_error - Log a sis64 array error. 2322 * @ioa_cfg: ioa config struct 2323 * @hostrcb: hostrcb struct 2324 * 2325 * Return value: 2326 * none 2327 **/ 2328 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg, 2329 struct ipr_hostrcb *hostrcb) 2330 { 2331 int i, num_entries; 2332 struct ipr_hostrcb_type_24_error *error; 2333 struct ipr_hostrcb64_array_data_entry *array_entry; 2334 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2335 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 2336 2337 error = &hostrcb->hcam.u.error64.u.type_24_error; 2338 2339 ipr_err_separator; 2340 2341 ipr_err("RAID %s Array Configuration: %s\n", 2342 error->protection_level, 2343 ipr_format_res_path(ioa_cfg, error->last_res_path, 2344 buffer, sizeof(buffer))); 2345 2346 ipr_err_separator; 2347 2348 array_entry = error->array_member; 2349 num_entries = min_t(u32, error->num_entries, 2350 ARRAY_SIZE(error->array_member)); 2351 2352 for (i = 0; i < num_entries; i++, array_entry++) { 2353 2354 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 2355 continue; 2356 2357 if (error->exposed_mode_adn == i) 2358 ipr_err("Exposed Array Member %d:\n", i); 2359 else 2360 ipr_err("Array Member %d:\n", i); 2361 2362 ipr_err("Array Member %d:\n", i); 2363 ipr_log_ext_vpd(&array_entry->vpd); 2364 ipr_err("Current Location: %s\n", 2365 ipr_format_res_path(ioa_cfg, array_entry->res_path, 2366 buffer, sizeof(buffer))); 2367 ipr_err("Expected Location: %s\n", 2368 ipr_format_res_path(ioa_cfg, 2369 array_entry->expected_res_path, 2370 buffer, sizeof(buffer))); 2371 2372 ipr_err_separator; 2373 } 2374 } 2375 2376 /** 2377 * ipr_log_sis64_fabric_error - Log a sis64 fabric error. 2378 * @ioa_cfg: ioa config struct 2379 * @hostrcb: hostrcb struct 2380 * 2381 * Return value: 2382 * none 2383 **/ 2384 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 2385 struct ipr_hostrcb *hostrcb) 2386 { 2387 struct ipr_hostrcb_type_30_error *error; 2388 struct ipr_hostrcb64_fabric_desc *fabric; 2389 struct ipr_hostrcb64_config_element *cfg; 2390 int i, add_len; 2391 2392 error = &hostrcb->hcam.u.error64.u.type_30_error; 2393 2394 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2395 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 2396 2397 add_len = be32_to_cpu(hostrcb->hcam.length) - 2398 (offsetof(struct ipr_hostrcb64_error, u) + 2399 offsetof(struct ipr_hostrcb_type_30_error, desc)); 2400 2401 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 2402 ipr_log64_fabric_path(hostrcb, fabric); 2403 for_each_fabric_cfg(fabric, cfg) 2404 ipr_log64_path_elem(hostrcb, cfg); 2405 2406 add_len -= be16_to_cpu(fabric->length); 2407 fabric = (struct ipr_hostrcb64_fabric_desc *) 2408 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 2409 } 2410 2411 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len); 2412 } 2413 2414 /** 2415 * ipr_log_generic_error - Log an adapter error. 2416 * @ioa_cfg: ioa config struct 2417 * @hostrcb: hostrcb struct 2418 * 2419 * Return value: 2420 * none 2421 **/ 2422 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, 2423 struct ipr_hostrcb *hostrcb) 2424 { 2425 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data, 2426 be32_to_cpu(hostrcb->hcam.length)); 2427 } 2428 2429 /** 2430 * ipr_log_sis64_device_error - Log a cache error. 2431 * @ioa_cfg: ioa config struct 2432 * @hostrcb: hostrcb struct 2433 * 2434 * Return value: 2435 * none 2436 **/ 2437 static void ipr_log_sis64_device_error(struct ipr_ioa_cfg *ioa_cfg, 2438 struct ipr_hostrcb *hostrcb) 2439 { 2440 struct ipr_hostrcb_type_21_error *error; 2441 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2442 2443 error = &hostrcb->hcam.u.error64.u.type_21_error; 2444 2445 ipr_err("-----Failing Device Information-----\n"); 2446 ipr_err("World Wide Unique ID: %08X%08X%08X%08X\n", 2447 be32_to_cpu(error->wwn[0]), be32_to_cpu(error->wwn[1]), 2448 be32_to_cpu(error->wwn[2]), be32_to_cpu(error->wwn[3])); 2449 ipr_err("Device Resource Path: %s\n", 2450 __ipr_format_res_path(error->res_path, 2451 buffer, sizeof(buffer))); 2452 error->primary_problem_desc[sizeof(error->primary_problem_desc) - 1] = '\0'; 2453 error->second_problem_desc[sizeof(error->second_problem_desc) - 1] = '\0'; 2454 ipr_err("Primary Problem Description: %s\n", error->primary_problem_desc); 2455 ipr_err("Secondary Problem Description: %s\n", error->second_problem_desc); 2456 ipr_err("SCSI Sense Data:\n"); 2457 ipr_log_hex_data(ioa_cfg, error->sense_data, sizeof(error->sense_data)); 2458 ipr_err("SCSI Command Descriptor Block: \n"); 2459 ipr_log_hex_data(ioa_cfg, error->cdb, sizeof(error->cdb)); 2460 2461 ipr_err("Additional IOA Data:\n"); 2462 ipr_log_hex_data(ioa_cfg, error->ioa_data, be32_to_cpu(error->length_of_error)); 2463 } 2464 2465 /** 2466 * ipr_get_error - Find the specfied IOASC in the ipr_error_table. 2467 * @ioasc: IOASC 2468 * 2469 * This function will return the index of into the ipr_error_table 2470 * for the specified IOASC. If the IOASC is not in the table, 2471 * 0 will be returned, which points to the entry used for unknown errors. 2472 * 2473 * Return value: 2474 * index into the ipr_error_table 2475 **/ 2476 static u32 ipr_get_error(u32 ioasc) 2477 { 2478 int i; 2479 2480 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) 2481 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK)) 2482 return i; 2483 2484 return 0; 2485 } 2486 2487 /** 2488 * ipr_handle_log_data - Log an adapter error. 2489 * @ioa_cfg: ioa config struct 2490 * @hostrcb: hostrcb struct 2491 * 2492 * This function logs an adapter error to the system. 2493 * 2494 * Return value: 2495 * none 2496 **/ 2497 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 2498 struct ipr_hostrcb *hostrcb) 2499 { 2500 u32 ioasc; 2501 int error_index; 2502 struct ipr_hostrcb_type_21_error *error; 2503 2504 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) 2505 return; 2506 2507 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) 2508 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); 2509 2510 if (ioa_cfg->sis64) 2511 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc); 2512 else 2513 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 2514 2515 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET || 2516 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) { 2517 /* Tell the midlayer we had a bus reset so it will handle the UA properly */ 2518 scsi_report_bus_reset(ioa_cfg->host, 2519 hostrcb->hcam.u.error.fd_res_addr.bus); 2520 } 2521 2522 error_index = ipr_get_error(ioasc); 2523 2524 if (!ipr_error_table[error_index].log_hcam) 2525 return; 2526 2527 if (ioasc == IPR_IOASC_HW_CMD_FAILED && 2528 hostrcb->hcam.overlay_id == IPR_HOST_RCB_OVERLAY_ID_21) { 2529 error = &hostrcb->hcam.u.error64.u.type_21_error; 2530 2531 if (((be32_to_cpu(error->sense_data[0]) & 0x0000ff00) >> 8) == ILLEGAL_REQUEST && 2532 ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 2533 return; 2534 } 2535 2536 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error); 2537 2538 /* Set indication we have logged an error */ 2539 ioa_cfg->errors_logged++; 2540 2541 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam) 2542 return; 2543 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw)) 2544 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw)); 2545 2546 switch (hostrcb->hcam.overlay_id) { 2547 case IPR_HOST_RCB_OVERLAY_ID_2: 2548 ipr_log_cache_error(ioa_cfg, hostrcb); 2549 break; 2550 case IPR_HOST_RCB_OVERLAY_ID_3: 2551 ipr_log_config_error(ioa_cfg, hostrcb); 2552 break; 2553 case IPR_HOST_RCB_OVERLAY_ID_4: 2554 case IPR_HOST_RCB_OVERLAY_ID_6: 2555 ipr_log_array_error(ioa_cfg, hostrcb); 2556 break; 2557 case IPR_HOST_RCB_OVERLAY_ID_7: 2558 ipr_log_dual_ioa_error(ioa_cfg, hostrcb); 2559 break; 2560 case IPR_HOST_RCB_OVERLAY_ID_12: 2561 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb); 2562 break; 2563 case IPR_HOST_RCB_OVERLAY_ID_13: 2564 ipr_log_enhanced_config_error(ioa_cfg, hostrcb); 2565 break; 2566 case IPR_HOST_RCB_OVERLAY_ID_14: 2567 case IPR_HOST_RCB_OVERLAY_ID_16: 2568 ipr_log_enhanced_array_error(ioa_cfg, hostrcb); 2569 break; 2570 case IPR_HOST_RCB_OVERLAY_ID_17: 2571 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb); 2572 break; 2573 case IPR_HOST_RCB_OVERLAY_ID_20: 2574 ipr_log_fabric_error(ioa_cfg, hostrcb); 2575 break; 2576 case IPR_HOST_RCB_OVERLAY_ID_21: 2577 ipr_log_sis64_device_error(ioa_cfg, hostrcb); 2578 break; 2579 case IPR_HOST_RCB_OVERLAY_ID_23: 2580 ipr_log_sis64_config_error(ioa_cfg, hostrcb); 2581 break; 2582 case IPR_HOST_RCB_OVERLAY_ID_24: 2583 case IPR_HOST_RCB_OVERLAY_ID_26: 2584 ipr_log_sis64_array_error(ioa_cfg, hostrcb); 2585 break; 2586 case IPR_HOST_RCB_OVERLAY_ID_30: 2587 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb); 2588 break; 2589 case IPR_HOST_RCB_OVERLAY_ID_1: 2590 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: 2591 default: 2592 ipr_log_generic_error(ioa_cfg, hostrcb); 2593 break; 2594 } 2595 } 2596 2597 static struct ipr_hostrcb *ipr_get_free_hostrcb(struct ipr_ioa_cfg *ioa) 2598 { 2599 struct ipr_hostrcb *hostrcb; 2600 2601 hostrcb = list_first_entry_or_null(&ioa->hostrcb_free_q, 2602 struct ipr_hostrcb, queue); 2603 2604 if (unlikely(!hostrcb)) { 2605 dev_info(&ioa->pdev->dev, "Reclaiming async error buffers."); 2606 hostrcb = list_first_entry_or_null(&ioa->hostrcb_report_q, 2607 struct ipr_hostrcb, queue); 2608 } 2609 2610 list_del_init(&hostrcb->queue); 2611 return hostrcb; 2612 } 2613 2614 /** 2615 * ipr_process_error - Op done function for an adapter error log. 2616 * @ipr_cmd: ipr command struct 2617 * 2618 * This function is the op done function for an error log host 2619 * controlled async from the adapter. It will log the error and 2620 * send the HCAM back to the adapter. 2621 * 2622 * Return value: 2623 * none 2624 **/ 2625 static void ipr_process_error(struct ipr_cmnd *ipr_cmd) 2626 { 2627 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2628 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 2629 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 2630 u32 fd_ioasc; 2631 2632 if (ioa_cfg->sis64) 2633 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc); 2634 else 2635 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 2636 2637 list_del_init(&hostrcb->queue); 2638 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 2639 2640 if (!ioasc) { 2641 ipr_handle_log_data(ioa_cfg, hostrcb); 2642 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED) 2643 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV); 2644 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET && 2645 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) { 2646 dev_err(&ioa_cfg->pdev->dev, 2647 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 2648 } 2649 2650 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_report_q); 2651 schedule_work(&ioa_cfg->work_q); 2652 hostrcb = ipr_get_free_hostrcb(ioa_cfg); 2653 2654 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 2655 } 2656 2657 /** 2658 * ipr_timeout - An internally generated op has timed out. 2659 * @ipr_cmd: ipr command struct 2660 * 2661 * This function blocks host requests and initiates an 2662 * adapter reset. 2663 * 2664 * Return value: 2665 * none 2666 **/ 2667 static void ipr_timeout(struct ipr_cmnd *ipr_cmd) 2668 { 2669 unsigned long lock_flags = 0; 2670 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2671 2672 ENTER; 2673 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2674 2675 ioa_cfg->errors_logged++; 2676 dev_err(&ioa_cfg->pdev->dev, 2677 "Adapter being reset due to command timeout.\n"); 2678 2679 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 2680 ioa_cfg->sdt_state = GET_DUMP; 2681 2682 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) 2683 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2684 2685 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2686 LEAVE; 2687 } 2688 2689 /** 2690 * ipr_oper_timeout - Adapter timed out transitioning to operational 2691 * @ipr_cmd: ipr command struct 2692 * 2693 * This function blocks host requests and initiates an 2694 * adapter reset. 2695 * 2696 * Return value: 2697 * none 2698 **/ 2699 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) 2700 { 2701 unsigned long lock_flags = 0; 2702 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2703 2704 ENTER; 2705 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2706 2707 ioa_cfg->errors_logged++; 2708 dev_err(&ioa_cfg->pdev->dev, 2709 "Adapter timed out transitioning to operational.\n"); 2710 2711 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 2712 ioa_cfg->sdt_state = GET_DUMP; 2713 2714 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { 2715 if (ipr_fastfail) 2716 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 2717 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2718 } 2719 2720 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2721 LEAVE; 2722 } 2723 2724 /** 2725 * ipr_find_ses_entry - Find matching SES in SES table 2726 * @res: resource entry struct of SES 2727 * 2728 * Return value: 2729 * pointer to SES table entry / NULL on failure 2730 **/ 2731 static const struct ipr_ses_table_entry * 2732 ipr_find_ses_entry(struct ipr_resource_entry *res) 2733 { 2734 int i, j, matches; 2735 struct ipr_std_inq_vpids *vpids; 2736 const struct ipr_ses_table_entry *ste = ipr_ses_table; 2737 2738 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { 2739 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { 2740 if (ste->compare_product_id_byte[j] == 'X') { 2741 vpids = &res->std_inq_data.vpids; 2742 if (vpids->product_id[j] == ste->product_id[j]) 2743 matches++; 2744 else 2745 break; 2746 } else 2747 matches++; 2748 } 2749 2750 if (matches == IPR_PROD_ID_LEN) 2751 return ste; 2752 } 2753 2754 return NULL; 2755 } 2756 2757 /** 2758 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus 2759 * @ioa_cfg: ioa config struct 2760 * @bus: SCSI bus 2761 * @bus_width: bus width 2762 * 2763 * Return value: 2764 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz 2765 * For a 2-byte wide SCSI bus, the maximum transfer speed is 2766 * twice the maximum transfer rate (e.g. for a wide enabled bus, 2767 * max 160MHz = max 320MB/sec). 2768 **/ 2769 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) 2770 { 2771 struct ipr_resource_entry *res; 2772 const struct ipr_ses_table_entry *ste; 2773 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); 2774 2775 /* Loop through each config table entry in the config table buffer */ 2776 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2777 if (!(IPR_IS_SES_DEVICE(res->std_inq_data))) 2778 continue; 2779 2780 if (bus != res->bus) 2781 continue; 2782 2783 if (!(ste = ipr_find_ses_entry(res))) 2784 continue; 2785 2786 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); 2787 } 2788 2789 return max_xfer_rate; 2790 } 2791 2792 /** 2793 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA 2794 * @ioa_cfg: ioa config struct 2795 * @max_delay: max delay in micro-seconds to wait 2796 * 2797 * Waits for an IODEBUG ACK from the IOA, doing busy looping. 2798 * 2799 * Return value: 2800 * 0 on success / other on failure 2801 **/ 2802 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) 2803 { 2804 volatile u32 pcii_reg; 2805 int delay = 1; 2806 2807 /* Read interrupt reg until IOA signals IO Debug Acknowledge */ 2808 while (delay < max_delay) { 2809 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 2810 2811 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) 2812 return 0; 2813 2814 /* udelay cannot be used if delay is more than a few milliseconds */ 2815 if ((delay / 1000) > MAX_UDELAY_MS) 2816 mdelay(delay / 1000); 2817 else 2818 udelay(delay); 2819 2820 delay += delay; 2821 } 2822 return -EIO; 2823 } 2824 2825 /** 2826 * ipr_get_sis64_dump_data_section - Dump IOA memory 2827 * @ioa_cfg: ioa config struct 2828 * @start_addr: adapter address to dump 2829 * @dest: destination kernel buffer 2830 * @length_in_words: length to dump in 4 byte words 2831 * 2832 * Return value: 2833 * 0 on success 2834 **/ 2835 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg, 2836 u32 start_addr, 2837 __be32 *dest, u32 length_in_words) 2838 { 2839 int i; 2840 2841 for (i = 0; i < length_in_words; i++) { 2842 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg); 2843 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg)); 2844 dest++; 2845 } 2846 2847 return 0; 2848 } 2849 2850 /** 2851 * ipr_get_ldump_data_section - Dump IOA memory 2852 * @ioa_cfg: ioa config struct 2853 * @start_addr: adapter address to dump 2854 * @dest: destination kernel buffer 2855 * @length_in_words: length to dump in 4 byte words 2856 * 2857 * Return value: 2858 * 0 on success / -EIO on failure 2859 **/ 2860 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, 2861 u32 start_addr, 2862 __be32 *dest, u32 length_in_words) 2863 { 2864 volatile u32 temp_pcii_reg; 2865 int i, delay = 0; 2866 2867 if (ioa_cfg->sis64) 2868 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr, 2869 dest, length_in_words); 2870 2871 /* Write IOA interrupt reg starting LDUMP state */ 2872 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), 2873 ioa_cfg->regs.set_uproc_interrupt_reg32); 2874 2875 /* Wait for IO debug acknowledge */ 2876 if (ipr_wait_iodbg_ack(ioa_cfg, 2877 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { 2878 dev_err(&ioa_cfg->pdev->dev, 2879 "IOA dump long data transfer timeout\n"); 2880 return -EIO; 2881 } 2882 2883 /* Signal LDUMP interlocked - clear IO debug ack */ 2884 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2885 ioa_cfg->regs.clr_interrupt_reg); 2886 2887 /* Write Mailbox with starting address */ 2888 writel(start_addr, ioa_cfg->ioa_mailbox); 2889 2890 /* Signal address valid - clear IOA Reset alert */ 2891 writel(IPR_UPROCI_RESET_ALERT, 2892 ioa_cfg->regs.clr_uproc_interrupt_reg32); 2893 2894 for (i = 0; i < length_in_words; i++) { 2895 /* Wait for IO debug acknowledge */ 2896 if (ipr_wait_iodbg_ack(ioa_cfg, 2897 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { 2898 dev_err(&ioa_cfg->pdev->dev, 2899 "IOA dump short data transfer timeout\n"); 2900 return -EIO; 2901 } 2902 2903 /* Read data from mailbox and increment destination pointer */ 2904 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); 2905 dest++; 2906 2907 /* For all but the last word of data, signal data received */ 2908 if (i < (length_in_words - 1)) { 2909 /* Signal dump data received - Clear IO debug Ack */ 2910 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2911 ioa_cfg->regs.clr_interrupt_reg); 2912 } 2913 } 2914 2915 /* Signal end of block transfer. Set reset alert then clear IO debug ack */ 2916 writel(IPR_UPROCI_RESET_ALERT, 2917 ioa_cfg->regs.set_uproc_interrupt_reg32); 2918 2919 writel(IPR_UPROCI_IO_DEBUG_ALERT, 2920 ioa_cfg->regs.clr_uproc_interrupt_reg32); 2921 2922 /* Signal dump data received - Clear IO debug Ack */ 2923 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2924 ioa_cfg->regs.clr_interrupt_reg); 2925 2926 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ 2927 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { 2928 temp_pcii_reg = 2929 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); 2930 2931 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) 2932 return 0; 2933 2934 udelay(10); 2935 delay += 10; 2936 } 2937 2938 return 0; 2939 } 2940 2941 #ifdef CONFIG_SCSI_IPR_DUMP 2942 /** 2943 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer 2944 * @ioa_cfg: ioa config struct 2945 * @pci_address: adapter address 2946 * @length: length of data to copy 2947 * 2948 * Copy data from PCI adapter to kernel buffer. 2949 * Note: length MUST be a 4 byte multiple 2950 * Return value: 2951 * 0 on success / other on failure 2952 **/ 2953 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, 2954 unsigned long pci_address, u32 length) 2955 { 2956 int bytes_copied = 0; 2957 int cur_len, rc, rem_len, rem_page_len, max_dump_size; 2958 __be32 *page; 2959 unsigned long lock_flags = 0; 2960 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; 2961 2962 if (ioa_cfg->sis64) 2963 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE; 2964 else 2965 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE; 2966 2967 while (bytes_copied < length && 2968 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) { 2969 if (ioa_dump->page_offset >= PAGE_SIZE || 2970 ioa_dump->page_offset == 0) { 2971 page = (__be32 *)__get_free_page(GFP_ATOMIC); 2972 2973 if (!page) { 2974 ipr_trace; 2975 return bytes_copied; 2976 } 2977 2978 ioa_dump->page_offset = 0; 2979 ioa_dump->ioa_data[ioa_dump->next_page_index] = page; 2980 ioa_dump->next_page_index++; 2981 } else 2982 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; 2983 2984 rem_len = length - bytes_copied; 2985 rem_page_len = PAGE_SIZE - ioa_dump->page_offset; 2986 cur_len = min(rem_len, rem_page_len); 2987 2988 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2989 if (ioa_cfg->sdt_state == ABORT_DUMP) { 2990 rc = -EIO; 2991 } else { 2992 rc = ipr_get_ldump_data_section(ioa_cfg, 2993 pci_address + bytes_copied, 2994 &page[ioa_dump->page_offset / 4], 2995 (cur_len / sizeof(u32))); 2996 } 2997 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2998 2999 if (!rc) { 3000 ioa_dump->page_offset += cur_len; 3001 bytes_copied += cur_len; 3002 } else { 3003 ipr_trace; 3004 break; 3005 } 3006 schedule(); 3007 } 3008 3009 return bytes_copied; 3010 } 3011 3012 /** 3013 * ipr_init_dump_entry_hdr - Initialize a dump entry header. 3014 * @hdr: dump entry header struct 3015 * 3016 * Return value: 3017 * nothing 3018 **/ 3019 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) 3020 { 3021 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; 3022 hdr->num_elems = 1; 3023 hdr->offset = sizeof(*hdr); 3024 hdr->status = IPR_DUMP_STATUS_SUCCESS; 3025 } 3026 3027 /** 3028 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. 3029 * @ioa_cfg: ioa config struct 3030 * @driver_dump: driver dump struct 3031 * 3032 * Return value: 3033 * nothing 3034 **/ 3035 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, 3036 struct ipr_driver_dump *driver_dump) 3037 { 3038 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 3039 3040 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); 3041 driver_dump->ioa_type_entry.hdr.len = 3042 sizeof(struct ipr_dump_ioa_type_entry) - 3043 sizeof(struct ipr_dump_entry_header); 3044 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 3045 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; 3046 driver_dump->ioa_type_entry.type = ioa_cfg->type; 3047 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | 3048 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | 3049 ucode_vpd->minor_release[1]; 3050 driver_dump->hdr.num_entries++; 3051 } 3052 3053 /** 3054 * ipr_dump_version_data - Fill in the driver version in the dump. 3055 * @ioa_cfg: ioa config struct 3056 * @driver_dump: driver dump struct 3057 * 3058 * Return value: 3059 * nothing 3060 **/ 3061 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, 3062 struct ipr_driver_dump *driver_dump) 3063 { 3064 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); 3065 driver_dump->version_entry.hdr.len = 3066 sizeof(struct ipr_dump_version_entry) - 3067 sizeof(struct ipr_dump_entry_header); 3068 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 3069 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; 3070 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); 3071 driver_dump->hdr.num_entries++; 3072 } 3073 3074 /** 3075 * ipr_dump_trace_data - Fill in the IOA trace in the dump. 3076 * @ioa_cfg: ioa config struct 3077 * @driver_dump: driver dump struct 3078 * 3079 * Return value: 3080 * nothing 3081 **/ 3082 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, 3083 struct ipr_driver_dump *driver_dump) 3084 { 3085 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); 3086 driver_dump->trace_entry.hdr.len = 3087 sizeof(struct ipr_dump_trace_entry) - 3088 sizeof(struct ipr_dump_entry_header); 3089 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 3090 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; 3091 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); 3092 driver_dump->hdr.num_entries++; 3093 } 3094 3095 /** 3096 * ipr_dump_location_data - Fill in the IOA location in the dump. 3097 * @ioa_cfg: ioa config struct 3098 * @driver_dump: driver dump struct 3099 * 3100 * Return value: 3101 * nothing 3102 **/ 3103 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, 3104 struct ipr_driver_dump *driver_dump) 3105 { 3106 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); 3107 driver_dump->location_entry.hdr.len = 3108 sizeof(struct ipr_dump_location_entry) - 3109 sizeof(struct ipr_dump_entry_header); 3110 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 3111 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; 3112 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev)); 3113 driver_dump->hdr.num_entries++; 3114 } 3115 3116 /** 3117 * ipr_get_ioa_dump - Perform a dump of the driver and adapter. 3118 * @ioa_cfg: ioa config struct 3119 * @dump: dump struct 3120 * 3121 * Return value: 3122 * nothing 3123 **/ 3124 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) 3125 { 3126 unsigned long start_addr, sdt_word; 3127 unsigned long lock_flags = 0; 3128 struct ipr_driver_dump *driver_dump = &dump->driver_dump; 3129 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; 3130 u32 num_entries, max_num_entries, start_off, end_off; 3131 u32 max_dump_size, bytes_to_copy, bytes_copied, rc; 3132 struct ipr_sdt *sdt; 3133 int valid = 1; 3134 int i; 3135 3136 ENTER; 3137 3138 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3139 3140 if (ioa_cfg->sdt_state != READ_DUMP) { 3141 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3142 return; 3143 } 3144 3145 if (ioa_cfg->sis64) { 3146 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3147 ssleep(IPR_DUMP_DELAY_SECONDS); 3148 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3149 } 3150 3151 start_addr = readl(ioa_cfg->ioa_mailbox); 3152 3153 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) { 3154 dev_err(&ioa_cfg->pdev->dev, 3155 "Invalid dump table format: %lx\n", start_addr); 3156 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3157 return; 3158 } 3159 3160 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); 3161 3162 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; 3163 3164 /* Initialize the overall dump header */ 3165 driver_dump->hdr.len = sizeof(struct ipr_driver_dump); 3166 driver_dump->hdr.num_entries = 1; 3167 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); 3168 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; 3169 driver_dump->hdr.os = IPR_DUMP_OS_LINUX; 3170 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; 3171 3172 ipr_dump_version_data(ioa_cfg, driver_dump); 3173 ipr_dump_location_data(ioa_cfg, driver_dump); 3174 ipr_dump_ioa_type_data(ioa_cfg, driver_dump); 3175 ipr_dump_trace_data(ioa_cfg, driver_dump); 3176 3177 /* Update dump_header */ 3178 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); 3179 3180 /* IOA Dump entry */ 3181 ipr_init_dump_entry_hdr(&ioa_dump->hdr); 3182 ioa_dump->hdr.len = 0; 3183 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 3184 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; 3185 3186 /* First entries in sdt are actually a list of dump addresses and 3187 lengths to gather the real dump data. sdt represents the pointer 3188 to the ioa generated dump table. Dump data will be extracted based 3189 on entries in this table */ 3190 sdt = &ioa_dump->sdt; 3191 3192 if (ioa_cfg->sis64) { 3193 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES; 3194 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE; 3195 } else { 3196 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES; 3197 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE; 3198 } 3199 3200 bytes_to_copy = offsetof(struct ipr_sdt, entry) + 3201 (max_num_entries * sizeof(struct ipr_sdt_entry)); 3202 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, 3203 bytes_to_copy / sizeof(__be32)); 3204 3205 /* Smart Dump table is ready to use and the first entry is valid */ 3206 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) && 3207 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) { 3208 dev_err(&ioa_cfg->pdev->dev, 3209 "Dump of IOA failed. Dump table not valid: %d, %X.\n", 3210 rc, be32_to_cpu(sdt->hdr.state)); 3211 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; 3212 ioa_cfg->sdt_state = DUMP_OBTAINED; 3213 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3214 return; 3215 } 3216 3217 num_entries = be32_to_cpu(sdt->hdr.num_entries_used); 3218 3219 if (num_entries > max_num_entries) 3220 num_entries = max_num_entries; 3221 3222 /* Update dump length to the actual data to be copied */ 3223 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header); 3224 if (ioa_cfg->sis64) 3225 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry); 3226 else 3227 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry); 3228 3229 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3230 3231 for (i = 0; i < num_entries; i++) { 3232 if (ioa_dump->hdr.len > max_dump_size) { 3233 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 3234 break; 3235 } 3236 3237 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { 3238 sdt_word = be32_to_cpu(sdt->entry[i].start_token); 3239 if (ioa_cfg->sis64) 3240 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token); 3241 else { 3242 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; 3243 end_off = be32_to_cpu(sdt->entry[i].end_token); 3244 3245 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) 3246 bytes_to_copy = end_off - start_off; 3247 else 3248 valid = 0; 3249 } 3250 if (valid) { 3251 if (bytes_to_copy > max_dump_size) { 3252 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; 3253 continue; 3254 } 3255 3256 /* Copy data from adapter to driver buffers */ 3257 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, 3258 bytes_to_copy); 3259 3260 ioa_dump->hdr.len += bytes_copied; 3261 3262 if (bytes_copied != bytes_to_copy) { 3263 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 3264 break; 3265 } 3266 } 3267 } 3268 } 3269 3270 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); 3271 3272 /* Update dump_header */ 3273 driver_dump->hdr.len += ioa_dump->hdr.len; 3274 wmb(); 3275 ioa_cfg->sdt_state = DUMP_OBTAINED; 3276 LEAVE; 3277 } 3278 3279 #else 3280 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0) 3281 #endif 3282 3283 /** 3284 * ipr_release_dump - Free adapter dump memory 3285 * @kref: kref struct 3286 * 3287 * Return value: 3288 * nothing 3289 **/ 3290 static void ipr_release_dump(struct kref *kref) 3291 { 3292 struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref); 3293 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; 3294 unsigned long lock_flags = 0; 3295 int i; 3296 3297 ENTER; 3298 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3299 ioa_cfg->dump = NULL; 3300 ioa_cfg->sdt_state = INACTIVE; 3301 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3302 3303 for (i = 0; i < dump->ioa_dump.next_page_index; i++) 3304 free_page((unsigned long) dump->ioa_dump.ioa_data[i]); 3305 3306 vfree(dump->ioa_dump.ioa_data); 3307 kfree(dump); 3308 LEAVE; 3309 } 3310 3311 /** 3312 * ipr_worker_thread - Worker thread 3313 * @work: ioa config struct 3314 * 3315 * Called at task level from a work thread. This function takes care 3316 * of adding and removing device from the mid-layer as configuration 3317 * changes are detected by the adapter. 3318 * 3319 * Return value: 3320 * nothing 3321 **/ 3322 static void ipr_worker_thread(struct work_struct *work) 3323 { 3324 unsigned long lock_flags; 3325 struct ipr_resource_entry *res; 3326 struct scsi_device *sdev; 3327 struct ipr_dump *dump; 3328 struct ipr_ioa_cfg *ioa_cfg = 3329 container_of(work, struct ipr_ioa_cfg, work_q); 3330 u8 bus, target, lun; 3331 int did_work; 3332 3333 ENTER; 3334 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3335 3336 if (ioa_cfg->sdt_state == READ_DUMP) { 3337 dump = ioa_cfg->dump; 3338 if (!dump) { 3339 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3340 return; 3341 } 3342 kref_get(&dump->kref); 3343 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3344 ipr_get_ioa_dump(ioa_cfg, dump); 3345 kref_put(&dump->kref, ipr_release_dump); 3346 3347 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3348 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout) 3349 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3350 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3351 return; 3352 } 3353 3354 if (!ioa_cfg->scan_enabled) { 3355 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3356 return; 3357 } 3358 3359 restart: 3360 do { 3361 did_work = 0; 3362 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) { 3363 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3364 return; 3365 } 3366 3367 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3368 if (res->del_from_ml && res->sdev) { 3369 did_work = 1; 3370 sdev = res->sdev; 3371 if (!scsi_device_get(sdev)) { 3372 if (!res->add_to_ml) 3373 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 3374 else 3375 res->del_from_ml = 0; 3376 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3377 scsi_remove_device(sdev); 3378 scsi_device_put(sdev); 3379 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3380 } 3381 break; 3382 } 3383 } 3384 } while (did_work); 3385 3386 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3387 if (res->add_to_ml) { 3388 bus = res->bus; 3389 target = res->target; 3390 lun = res->lun; 3391 res->add_to_ml = 0; 3392 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3393 scsi_add_device(ioa_cfg->host, bus, target, lun); 3394 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3395 goto restart; 3396 } 3397 } 3398 3399 ioa_cfg->scan_done = 1; 3400 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3401 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE); 3402 LEAVE; 3403 } 3404 3405 #ifdef CONFIG_SCSI_IPR_TRACE 3406 /** 3407 * ipr_read_trace - Dump the adapter trace 3408 * @filp: open sysfs file 3409 * @kobj: kobject struct 3410 * @bin_attr: bin_attribute struct 3411 * @buf: buffer 3412 * @off: offset 3413 * @count: buffer size 3414 * 3415 * Return value: 3416 * number of bytes printed to buffer 3417 **/ 3418 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj, 3419 struct bin_attribute *bin_attr, 3420 char *buf, loff_t off, size_t count) 3421 { 3422 struct device *dev = container_of(kobj, struct device, kobj); 3423 struct Scsi_Host *shost = class_to_shost(dev); 3424 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3425 unsigned long lock_flags = 0; 3426 ssize_t ret; 3427 3428 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3429 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace, 3430 IPR_TRACE_SIZE); 3431 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3432 3433 return ret; 3434 } 3435 3436 static struct bin_attribute ipr_trace_attr = { 3437 .attr = { 3438 .name = "trace", 3439 .mode = S_IRUGO, 3440 }, 3441 .size = 0, 3442 .read = ipr_read_trace, 3443 }; 3444 #endif 3445 3446 /** 3447 * ipr_show_fw_version - Show the firmware version 3448 * @dev: class device struct 3449 * @buf: buffer 3450 * 3451 * Return value: 3452 * number of bytes printed to buffer 3453 **/ 3454 static ssize_t ipr_show_fw_version(struct device *dev, 3455 struct device_attribute *attr, char *buf) 3456 { 3457 struct Scsi_Host *shost = class_to_shost(dev); 3458 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3459 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 3460 unsigned long lock_flags = 0; 3461 int len; 3462 3463 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3464 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 3465 ucode_vpd->major_release, ucode_vpd->card_type, 3466 ucode_vpd->minor_release[0], 3467 ucode_vpd->minor_release[1]); 3468 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3469 return len; 3470 } 3471 3472 static struct device_attribute ipr_fw_version_attr = { 3473 .attr = { 3474 .name = "fw_version", 3475 .mode = S_IRUGO, 3476 }, 3477 .show = ipr_show_fw_version, 3478 }; 3479 3480 /** 3481 * ipr_show_log_level - Show the adapter's error logging level 3482 * @dev: class device struct 3483 * @buf: buffer 3484 * 3485 * Return value: 3486 * number of bytes printed to buffer 3487 **/ 3488 static ssize_t ipr_show_log_level(struct device *dev, 3489 struct device_attribute *attr, char *buf) 3490 { 3491 struct Scsi_Host *shost = class_to_shost(dev); 3492 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3493 unsigned long lock_flags = 0; 3494 int len; 3495 3496 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3497 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 3498 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3499 return len; 3500 } 3501 3502 /** 3503 * ipr_store_log_level - Change the adapter's error logging level 3504 * @dev: class device struct 3505 * @buf: buffer 3506 * 3507 * Return value: 3508 * number of bytes printed to buffer 3509 **/ 3510 static ssize_t ipr_store_log_level(struct device *dev, 3511 struct device_attribute *attr, 3512 const char *buf, size_t count) 3513 { 3514 struct Scsi_Host *shost = class_to_shost(dev); 3515 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3516 unsigned long lock_flags = 0; 3517 3518 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3519 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 3520 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3521 return strlen(buf); 3522 } 3523 3524 static struct device_attribute ipr_log_level_attr = { 3525 .attr = { 3526 .name = "log_level", 3527 .mode = S_IRUGO | S_IWUSR, 3528 }, 3529 .show = ipr_show_log_level, 3530 .store = ipr_store_log_level 3531 }; 3532 3533 /** 3534 * ipr_store_diagnostics - IOA Diagnostics interface 3535 * @dev: device struct 3536 * @buf: buffer 3537 * @count: buffer size 3538 * 3539 * This function will reset the adapter and wait a reasonable 3540 * amount of time for any errors that the adapter might log. 3541 * 3542 * Return value: 3543 * count on success / other on failure 3544 **/ 3545 static ssize_t ipr_store_diagnostics(struct device *dev, 3546 struct device_attribute *attr, 3547 const char *buf, size_t count) 3548 { 3549 struct Scsi_Host *shost = class_to_shost(dev); 3550 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3551 unsigned long lock_flags = 0; 3552 int rc = count; 3553 3554 if (!capable(CAP_SYS_ADMIN)) 3555 return -EACCES; 3556 3557 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3558 while (ioa_cfg->in_reset_reload) { 3559 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3560 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3561 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3562 } 3563 3564 ioa_cfg->errors_logged = 0; 3565 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3566 3567 if (ioa_cfg->in_reset_reload) { 3568 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3569 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3570 3571 /* Wait for a second for any errors to be logged */ 3572 msleep(1000); 3573 } else { 3574 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3575 return -EIO; 3576 } 3577 3578 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3579 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 3580 rc = -EIO; 3581 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3582 3583 return rc; 3584 } 3585 3586 static struct device_attribute ipr_diagnostics_attr = { 3587 .attr = { 3588 .name = "run_diagnostics", 3589 .mode = S_IWUSR, 3590 }, 3591 .store = ipr_store_diagnostics 3592 }; 3593 3594 /** 3595 * ipr_show_adapter_state - Show the adapter's state 3596 * @class_dev: device struct 3597 * @buf: buffer 3598 * 3599 * Return value: 3600 * number of bytes printed to buffer 3601 **/ 3602 static ssize_t ipr_show_adapter_state(struct device *dev, 3603 struct device_attribute *attr, char *buf) 3604 { 3605 struct Scsi_Host *shost = class_to_shost(dev); 3606 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3607 unsigned long lock_flags = 0; 3608 int len; 3609 3610 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3611 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 3612 len = snprintf(buf, PAGE_SIZE, "offline\n"); 3613 else 3614 len = snprintf(buf, PAGE_SIZE, "online\n"); 3615 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3616 return len; 3617 } 3618 3619 /** 3620 * ipr_store_adapter_state - Change adapter state 3621 * @dev: device struct 3622 * @buf: buffer 3623 * @count: buffer size 3624 * 3625 * This function will change the adapter's state. 3626 * 3627 * Return value: 3628 * count on success / other on failure 3629 **/ 3630 static ssize_t ipr_store_adapter_state(struct device *dev, 3631 struct device_attribute *attr, 3632 const char *buf, size_t count) 3633 { 3634 struct Scsi_Host *shost = class_to_shost(dev); 3635 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3636 unsigned long lock_flags; 3637 int result = count, i; 3638 3639 if (!capable(CAP_SYS_ADMIN)) 3640 return -EACCES; 3641 3642 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3643 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && 3644 !strncmp(buf, "online", 6)) { 3645 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 3646 spin_lock(&ioa_cfg->hrrq[i]._lock); 3647 ioa_cfg->hrrq[i].ioa_is_dead = 0; 3648 spin_unlock(&ioa_cfg->hrrq[i]._lock); 3649 } 3650 wmb(); 3651 ioa_cfg->reset_retries = 0; 3652 ioa_cfg->in_ioa_bringdown = 0; 3653 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3654 } 3655 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3656 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3657 3658 return result; 3659 } 3660 3661 static struct device_attribute ipr_ioa_state_attr = { 3662 .attr = { 3663 .name = "online_state", 3664 .mode = S_IRUGO | S_IWUSR, 3665 }, 3666 .show = ipr_show_adapter_state, 3667 .store = ipr_store_adapter_state 3668 }; 3669 3670 /** 3671 * ipr_store_reset_adapter - Reset the adapter 3672 * @dev: device struct 3673 * @buf: buffer 3674 * @count: buffer size 3675 * 3676 * This function will reset the adapter. 3677 * 3678 * Return value: 3679 * count on success / other on failure 3680 **/ 3681 static ssize_t ipr_store_reset_adapter(struct device *dev, 3682 struct device_attribute *attr, 3683 const char *buf, size_t count) 3684 { 3685 struct Scsi_Host *shost = class_to_shost(dev); 3686 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3687 unsigned long lock_flags; 3688 int result = count; 3689 3690 if (!capable(CAP_SYS_ADMIN)) 3691 return -EACCES; 3692 3693 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3694 if (!ioa_cfg->in_reset_reload) 3695 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3696 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3697 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3698 3699 return result; 3700 } 3701 3702 static struct device_attribute ipr_ioa_reset_attr = { 3703 .attr = { 3704 .name = "reset_host", 3705 .mode = S_IWUSR, 3706 }, 3707 .store = ipr_store_reset_adapter 3708 }; 3709 3710 static int ipr_iopoll(struct irq_poll *iop, int budget); 3711 /** 3712 * ipr_show_iopoll_weight - Show ipr polling mode 3713 * @dev: class device struct 3714 * @buf: buffer 3715 * 3716 * Return value: 3717 * number of bytes printed to buffer 3718 **/ 3719 static ssize_t ipr_show_iopoll_weight(struct device *dev, 3720 struct device_attribute *attr, char *buf) 3721 { 3722 struct Scsi_Host *shost = class_to_shost(dev); 3723 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3724 unsigned long lock_flags = 0; 3725 int len; 3726 3727 spin_lock_irqsave(shost->host_lock, lock_flags); 3728 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight); 3729 spin_unlock_irqrestore(shost->host_lock, lock_flags); 3730 3731 return len; 3732 } 3733 3734 /** 3735 * ipr_store_iopoll_weight - Change the adapter's polling mode 3736 * @dev: class device struct 3737 * @buf: buffer 3738 * 3739 * Return value: 3740 * number of bytes printed to buffer 3741 **/ 3742 static ssize_t ipr_store_iopoll_weight(struct device *dev, 3743 struct device_attribute *attr, 3744 const char *buf, size_t count) 3745 { 3746 struct Scsi_Host *shost = class_to_shost(dev); 3747 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3748 unsigned long user_iopoll_weight; 3749 unsigned long lock_flags = 0; 3750 int i; 3751 3752 if (!ioa_cfg->sis64) { 3753 dev_info(&ioa_cfg->pdev->dev, "irq_poll not supported on this adapter\n"); 3754 return -EINVAL; 3755 } 3756 if (kstrtoul(buf, 10, &user_iopoll_weight)) 3757 return -EINVAL; 3758 3759 if (user_iopoll_weight > 256) { 3760 dev_info(&ioa_cfg->pdev->dev, "Invalid irq_poll weight. It must be less than 256\n"); 3761 return -EINVAL; 3762 } 3763 3764 if (user_iopoll_weight == ioa_cfg->iopoll_weight) { 3765 dev_info(&ioa_cfg->pdev->dev, "Current irq_poll weight has the same weight\n"); 3766 return strlen(buf); 3767 } 3768 3769 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 3770 for (i = 1; i < ioa_cfg->hrrq_num; i++) 3771 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll); 3772 } 3773 3774 spin_lock_irqsave(shost->host_lock, lock_flags); 3775 ioa_cfg->iopoll_weight = user_iopoll_weight; 3776 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 3777 for (i = 1; i < ioa_cfg->hrrq_num; i++) { 3778 irq_poll_init(&ioa_cfg->hrrq[i].iopoll, 3779 ioa_cfg->iopoll_weight, ipr_iopoll); 3780 } 3781 } 3782 spin_unlock_irqrestore(shost->host_lock, lock_flags); 3783 3784 return strlen(buf); 3785 } 3786 3787 static struct device_attribute ipr_iopoll_weight_attr = { 3788 .attr = { 3789 .name = "iopoll_weight", 3790 .mode = S_IRUGO | S_IWUSR, 3791 }, 3792 .show = ipr_show_iopoll_weight, 3793 .store = ipr_store_iopoll_weight 3794 }; 3795 3796 /** 3797 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 3798 * @buf_len: buffer length 3799 * 3800 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 3801 * list to use for microcode download 3802 * 3803 * Return value: 3804 * pointer to sglist / NULL on failure 3805 **/ 3806 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 3807 { 3808 int sg_size, order, bsize_elem, num_elem, i, j; 3809 struct ipr_sglist *sglist; 3810 struct scatterlist *scatterlist; 3811 struct page *page; 3812 3813 /* Get the minimum size per scatter/gather element */ 3814 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 3815 3816 /* Get the actual size per element */ 3817 order = get_order(sg_size); 3818 3819 /* Determine the actual number of bytes per element */ 3820 bsize_elem = PAGE_SIZE * (1 << order); 3821 3822 /* Determine the actual number of sg entries needed */ 3823 if (buf_len % bsize_elem) 3824 num_elem = (buf_len / bsize_elem) + 1; 3825 else 3826 num_elem = buf_len / bsize_elem; 3827 3828 /* Allocate a scatter/gather list for the DMA */ 3829 sglist = kzalloc(sizeof(struct ipr_sglist) + 3830 (sizeof(struct scatterlist) * (num_elem - 1)), 3831 GFP_KERNEL); 3832 3833 if (sglist == NULL) { 3834 ipr_trace; 3835 return NULL; 3836 } 3837 3838 scatterlist = sglist->scatterlist; 3839 sg_init_table(scatterlist, num_elem); 3840 3841 sglist->order = order; 3842 sglist->num_sg = num_elem; 3843 3844 /* Allocate a bunch of sg elements */ 3845 for (i = 0; i < num_elem; i++) { 3846 page = alloc_pages(GFP_KERNEL, order); 3847 if (!page) { 3848 ipr_trace; 3849 3850 /* Free up what we already allocated */ 3851 for (j = i - 1; j >= 0; j--) 3852 __free_pages(sg_page(&scatterlist[j]), order); 3853 kfree(sglist); 3854 return NULL; 3855 } 3856 3857 sg_set_page(&scatterlist[i], page, 0, 0); 3858 } 3859 3860 return sglist; 3861 } 3862 3863 /** 3864 * ipr_free_ucode_buffer - Frees a microcode download buffer 3865 * @p_dnld: scatter/gather list pointer 3866 * 3867 * Free a DMA'able ucode download buffer previously allocated with 3868 * ipr_alloc_ucode_buffer 3869 * 3870 * Return value: 3871 * nothing 3872 **/ 3873 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 3874 { 3875 int i; 3876 3877 for (i = 0; i < sglist->num_sg; i++) 3878 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order); 3879 3880 kfree(sglist); 3881 } 3882 3883 /** 3884 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 3885 * @sglist: scatter/gather list pointer 3886 * @buffer: buffer pointer 3887 * @len: buffer length 3888 * 3889 * Copy a microcode image from a user buffer into a buffer allocated by 3890 * ipr_alloc_ucode_buffer 3891 * 3892 * Return value: 3893 * 0 on success / other on failure 3894 **/ 3895 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 3896 u8 *buffer, u32 len) 3897 { 3898 int bsize_elem, i, result = 0; 3899 struct scatterlist *scatterlist; 3900 void *kaddr; 3901 3902 /* Determine the actual number of bytes per element */ 3903 bsize_elem = PAGE_SIZE * (1 << sglist->order); 3904 3905 scatterlist = sglist->scatterlist; 3906 3907 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { 3908 struct page *page = sg_page(&scatterlist[i]); 3909 3910 kaddr = kmap(page); 3911 memcpy(kaddr, buffer, bsize_elem); 3912 kunmap(page); 3913 3914 scatterlist[i].length = bsize_elem; 3915 3916 if (result != 0) { 3917 ipr_trace; 3918 return result; 3919 } 3920 } 3921 3922 if (len % bsize_elem) { 3923 struct page *page = sg_page(&scatterlist[i]); 3924 3925 kaddr = kmap(page); 3926 memcpy(kaddr, buffer, len % bsize_elem); 3927 kunmap(page); 3928 3929 scatterlist[i].length = len % bsize_elem; 3930 } 3931 3932 sglist->buffer_len = len; 3933 return result; 3934 } 3935 3936 /** 3937 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL 3938 * @ipr_cmd: ipr command struct 3939 * @sglist: scatter/gather list 3940 * 3941 * Builds a microcode download IOA data list (IOADL). 3942 * 3943 **/ 3944 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd, 3945 struct ipr_sglist *sglist) 3946 { 3947 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3948 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 3949 struct scatterlist *scatterlist = sglist->scatterlist; 3950 int i; 3951 3952 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 3953 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3954 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 3955 3956 ioarcb->ioadl_len = 3957 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 3958 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3959 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE); 3960 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i])); 3961 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i])); 3962 } 3963 3964 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3965 } 3966 3967 /** 3968 * ipr_build_ucode_ioadl - Build a microcode download IOADL 3969 * @ipr_cmd: ipr command struct 3970 * @sglist: scatter/gather list 3971 * 3972 * Builds a microcode download IOA data list (IOADL). 3973 * 3974 **/ 3975 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, 3976 struct ipr_sglist *sglist) 3977 { 3978 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3979 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 3980 struct scatterlist *scatterlist = sglist->scatterlist; 3981 int i; 3982 3983 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 3984 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3985 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 3986 3987 ioarcb->ioadl_len = 3988 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 3989 3990 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3991 ioadl[i].flags_and_data_len = 3992 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); 3993 ioadl[i].address = 3994 cpu_to_be32(sg_dma_address(&scatterlist[i])); 3995 } 3996 3997 ioadl[i-1].flags_and_data_len |= 3998 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3999 } 4000 4001 /** 4002 * ipr_update_ioa_ucode - Update IOA's microcode 4003 * @ioa_cfg: ioa config struct 4004 * @sglist: scatter/gather list 4005 * 4006 * Initiate an adapter reset to update the IOA's microcode 4007 * 4008 * Return value: 4009 * 0 on success / -EIO on failure 4010 **/ 4011 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, 4012 struct ipr_sglist *sglist) 4013 { 4014 unsigned long lock_flags; 4015 4016 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4017 while (ioa_cfg->in_reset_reload) { 4018 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4019 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4020 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4021 } 4022 4023 if (ioa_cfg->ucode_sglist) { 4024 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4025 dev_err(&ioa_cfg->pdev->dev, 4026 "Microcode download already in progress\n"); 4027 return -EIO; 4028 } 4029 4030 sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev, 4031 sglist->scatterlist, sglist->num_sg, 4032 DMA_TO_DEVICE); 4033 4034 if (!sglist->num_dma_sg) { 4035 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4036 dev_err(&ioa_cfg->pdev->dev, 4037 "Failed to map microcode download buffer!\n"); 4038 return -EIO; 4039 } 4040 4041 ioa_cfg->ucode_sglist = sglist; 4042 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 4043 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4044 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4045 4046 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4047 ioa_cfg->ucode_sglist = NULL; 4048 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4049 return 0; 4050 } 4051 4052 /** 4053 * ipr_store_update_fw - Update the firmware on the adapter 4054 * @class_dev: device struct 4055 * @buf: buffer 4056 * @count: buffer size 4057 * 4058 * This function will update the firmware on the adapter. 4059 * 4060 * Return value: 4061 * count on success / other on failure 4062 **/ 4063 static ssize_t ipr_store_update_fw(struct device *dev, 4064 struct device_attribute *attr, 4065 const char *buf, size_t count) 4066 { 4067 struct Scsi_Host *shost = class_to_shost(dev); 4068 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4069 struct ipr_ucode_image_header *image_hdr; 4070 const struct firmware *fw_entry; 4071 struct ipr_sglist *sglist; 4072 char fname[100]; 4073 char *src; 4074 char *endline; 4075 int result, dnld_size; 4076 4077 if (!capable(CAP_SYS_ADMIN)) 4078 return -EACCES; 4079 4080 snprintf(fname, sizeof(fname), "%s", buf); 4081 4082 endline = strchr(fname, '\n'); 4083 if (endline) 4084 *endline = '\0'; 4085 4086 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 4087 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 4088 return -EIO; 4089 } 4090 4091 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 4092 4093 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 4094 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 4095 sglist = ipr_alloc_ucode_buffer(dnld_size); 4096 4097 if (!sglist) { 4098 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 4099 release_firmware(fw_entry); 4100 return -ENOMEM; 4101 } 4102 4103 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 4104 4105 if (result) { 4106 dev_err(&ioa_cfg->pdev->dev, 4107 "Microcode buffer copy to DMA buffer failed\n"); 4108 goto out; 4109 } 4110 4111 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n"); 4112 4113 result = ipr_update_ioa_ucode(ioa_cfg, sglist); 4114 4115 if (!result) 4116 result = count; 4117 out: 4118 ipr_free_ucode_buffer(sglist); 4119 release_firmware(fw_entry); 4120 return result; 4121 } 4122 4123 static struct device_attribute ipr_update_fw_attr = { 4124 .attr = { 4125 .name = "update_fw", 4126 .mode = S_IWUSR, 4127 }, 4128 .store = ipr_store_update_fw 4129 }; 4130 4131 /** 4132 * ipr_show_fw_type - Show the adapter's firmware type. 4133 * @dev: class device struct 4134 * @buf: buffer 4135 * 4136 * Return value: 4137 * number of bytes printed to buffer 4138 **/ 4139 static ssize_t ipr_show_fw_type(struct device *dev, 4140 struct device_attribute *attr, char *buf) 4141 { 4142 struct Scsi_Host *shost = class_to_shost(dev); 4143 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4144 unsigned long lock_flags = 0; 4145 int len; 4146 4147 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4148 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64); 4149 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4150 return len; 4151 } 4152 4153 static struct device_attribute ipr_ioa_fw_type_attr = { 4154 .attr = { 4155 .name = "fw_type", 4156 .mode = S_IRUGO, 4157 }, 4158 .show = ipr_show_fw_type 4159 }; 4160 4161 static ssize_t ipr_read_async_err_log(struct file *filep, struct kobject *kobj, 4162 struct bin_attribute *bin_attr, char *buf, 4163 loff_t off, size_t count) 4164 { 4165 struct device *cdev = container_of(kobj, struct device, kobj); 4166 struct Scsi_Host *shost = class_to_shost(cdev); 4167 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4168 struct ipr_hostrcb *hostrcb; 4169 unsigned long lock_flags = 0; 4170 int ret; 4171 4172 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4173 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q, 4174 struct ipr_hostrcb, queue); 4175 if (!hostrcb) { 4176 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4177 return 0; 4178 } 4179 ret = memory_read_from_buffer(buf, count, &off, &hostrcb->hcam, 4180 sizeof(hostrcb->hcam)); 4181 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4182 return ret; 4183 } 4184 4185 static ssize_t ipr_next_async_err_log(struct file *filep, struct kobject *kobj, 4186 struct bin_attribute *bin_attr, char *buf, 4187 loff_t off, size_t count) 4188 { 4189 struct device *cdev = container_of(kobj, struct device, kobj); 4190 struct Scsi_Host *shost = class_to_shost(cdev); 4191 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4192 struct ipr_hostrcb *hostrcb; 4193 unsigned long lock_flags = 0; 4194 4195 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4196 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q, 4197 struct ipr_hostrcb, queue); 4198 if (!hostrcb) { 4199 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4200 return count; 4201 } 4202 4203 /* Reclaim hostrcb before exit */ 4204 list_move_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 4205 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4206 return count; 4207 } 4208 4209 static struct bin_attribute ipr_ioa_async_err_log = { 4210 .attr = { 4211 .name = "async_err_log", 4212 .mode = S_IRUGO | S_IWUSR, 4213 }, 4214 .size = 0, 4215 .read = ipr_read_async_err_log, 4216 .write = ipr_next_async_err_log 4217 }; 4218 4219 static struct device_attribute *ipr_ioa_attrs[] = { 4220 &ipr_fw_version_attr, 4221 &ipr_log_level_attr, 4222 &ipr_diagnostics_attr, 4223 &ipr_ioa_state_attr, 4224 &ipr_ioa_reset_attr, 4225 &ipr_update_fw_attr, 4226 &ipr_ioa_fw_type_attr, 4227 &ipr_iopoll_weight_attr, 4228 NULL, 4229 }; 4230 4231 #ifdef CONFIG_SCSI_IPR_DUMP 4232 /** 4233 * ipr_read_dump - Dump the adapter 4234 * @filp: open sysfs file 4235 * @kobj: kobject struct 4236 * @bin_attr: bin_attribute struct 4237 * @buf: buffer 4238 * @off: offset 4239 * @count: buffer size 4240 * 4241 * Return value: 4242 * number of bytes printed to buffer 4243 **/ 4244 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj, 4245 struct bin_attribute *bin_attr, 4246 char *buf, loff_t off, size_t count) 4247 { 4248 struct device *cdev = container_of(kobj, struct device, kobj); 4249 struct Scsi_Host *shost = class_to_shost(cdev); 4250 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4251 struct ipr_dump *dump; 4252 unsigned long lock_flags = 0; 4253 char *src; 4254 int len, sdt_end; 4255 size_t rc = count; 4256 4257 if (!capable(CAP_SYS_ADMIN)) 4258 return -EACCES; 4259 4260 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4261 dump = ioa_cfg->dump; 4262 4263 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 4264 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4265 return 0; 4266 } 4267 kref_get(&dump->kref); 4268 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4269 4270 if (off > dump->driver_dump.hdr.len) { 4271 kref_put(&dump->kref, ipr_release_dump); 4272 return 0; 4273 } 4274 4275 if (off + count > dump->driver_dump.hdr.len) { 4276 count = dump->driver_dump.hdr.len - off; 4277 rc = count; 4278 } 4279 4280 if (count && off < sizeof(dump->driver_dump)) { 4281 if (off + count > sizeof(dump->driver_dump)) 4282 len = sizeof(dump->driver_dump) - off; 4283 else 4284 len = count; 4285 src = (u8 *)&dump->driver_dump + off; 4286 memcpy(buf, src, len); 4287 buf += len; 4288 off += len; 4289 count -= len; 4290 } 4291 4292 off -= sizeof(dump->driver_dump); 4293 4294 if (ioa_cfg->sis64) 4295 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) + 4296 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) * 4297 sizeof(struct ipr_sdt_entry)); 4298 else 4299 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) + 4300 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry)); 4301 4302 if (count && off < sdt_end) { 4303 if (off + count > sdt_end) 4304 len = sdt_end - off; 4305 else 4306 len = count; 4307 src = (u8 *)&dump->ioa_dump + off; 4308 memcpy(buf, src, len); 4309 buf += len; 4310 off += len; 4311 count -= len; 4312 } 4313 4314 off -= sdt_end; 4315 4316 while (count) { 4317 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 4318 len = PAGE_ALIGN(off) - off; 4319 else 4320 len = count; 4321 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 4322 src += off & ~PAGE_MASK; 4323 memcpy(buf, src, len); 4324 buf += len; 4325 off += len; 4326 count -= len; 4327 } 4328 4329 kref_put(&dump->kref, ipr_release_dump); 4330 return rc; 4331 } 4332 4333 /** 4334 * ipr_alloc_dump - Prepare for adapter dump 4335 * @ioa_cfg: ioa config struct 4336 * 4337 * Return value: 4338 * 0 on success / other on failure 4339 **/ 4340 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 4341 { 4342 struct ipr_dump *dump; 4343 __be32 **ioa_data; 4344 unsigned long lock_flags = 0; 4345 4346 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); 4347 4348 if (!dump) { 4349 ipr_err("Dump memory allocation failed\n"); 4350 return -ENOMEM; 4351 } 4352 4353 if (ioa_cfg->sis64) 4354 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *)); 4355 else 4356 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *)); 4357 4358 if (!ioa_data) { 4359 ipr_err("Dump memory allocation failed\n"); 4360 kfree(dump); 4361 return -ENOMEM; 4362 } 4363 4364 dump->ioa_dump.ioa_data = ioa_data; 4365 4366 kref_init(&dump->kref); 4367 dump->ioa_cfg = ioa_cfg; 4368 4369 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4370 4371 if (INACTIVE != ioa_cfg->sdt_state) { 4372 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4373 vfree(dump->ioa_dump.ioa_data); 4374 kfree(dump); 4375 return 0; 4376 } 4377 4378 ioa_cfg->dump = dump; 4379 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 4380 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) { 4381 ioa_cfg->dump_taken = 1; 4382 schedule_work(&ioa_cfg->work_q); 4383 } 4384 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4385 4386 return 0; 4387 } 4388 4389 /** 4390 * ipr_free_dump - Free adapter dump memory 4391 * @ioa_cfg: ioa config struct 4392 * 4393 * Return value: 4394 * 0 on success / other on failure 4395 **/ 4396 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 4397 { 4398 struct ipr_dump *dump; 4399 unsigned long lock_flags = 0; 4400 4401 ENTER; 4402 4403 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4404 dump = ioa_cfg->dump; 4405 if (!dump) { 4406 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4407 return 0; 4408 } 4409 4410 ioa_cfg->dump = NULL; 4411 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4412 4413 kref_put(&dump->kref, ipr_release_dump); 4414 4415 LEAVE; 4416 return 0; 4417 } 4418 4419 /** 4420 * ipr_write_dump - Setup dump state of adapter 4421 * @filp: open sysfs file 4422 * @kobj: kobject struct 4423 * @bin_attr: bin_attribute struct 4424 * @buf: buffer 4425 * @off: offset 4426 * @count: buffer size 4427 * 4428 * Return value: 4429 * number of bytes printed to buffer 4430 **/ 4431 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj, 4432 struct bin_attribute *bin_attr, 4433 char *buf, loff_t off, size_t count) 4434 { 4435 struct device *cdev = container_of(kobj, struct device, kobj); 4436 struct Scsi_Host *shost = class_to_shost(cdev); 4437 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4438 int rc; 4439 4440 if (!capable(CAP_SYS_ADMIN)) 4441 return -EACCES; 4442 4443 if (buf[0] == '1') 4444 rc = ipr_alloc_dump(ioa_cfg); 4445 else if (buf[0] == '0') 4446 rc = ipr_free_dump(ioa_cfg); 4447 else 4448 return -EINVAL; 4449 4450 if (rc) 4451 return rc; 4452 else 4453 return count; 4454 } 4455 4456 static struct bin_attribute ipr_dump_attr = { 4457 .attr = { 4458 .name = "dump", 4459 .mode = S_IRUSR | S_IWUSR, 4460 }, 4461 .size = 0, 4462 .read = ipr_read_dump, 4463 .write = ipr_write_dump 4464 }; 4465 #else 4466 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 4467 #endif 4468 4469 /** 4470 * ipr_change_queue_depth - Change the device's queue depth 4471 * @sdev: scsi device struct 4472 * @qdepth: depth to set 4473 * @reason: calling context 4474 * 4475 * Return value: 4476 * actual depth set 4477 **/ 4478 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) 4479 { 4480 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4481 struct ipr_resource_entry *res; 4482 unsigned long lock_flags = 0; 4483 4484 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4485 res = (struct ipr_resource_entry *)sdev->hostdata; 4486 4487 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN) 4488 qdepth = IPR_MAX_CMD_PER_ATA_LUN; 4489 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4490 4491 scsi_change_queue_depth(sdev, qdepth); 4492 return sdev->queue_depth; 4493 } 4494 4495 /** 4496 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 4497 * @dev: device struct 4498 * @attr: device attribute structure 4499 * @buf: buffer 4500 * 4501 * Return value: 4502 * number of bytes printed to buffer 4503 **/ 4504 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) 4505 { 4506 struct scsi_device *sdev = to_scsi_device(dev); 4507 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4508 struct ipr_resource_entry *res; 4509 unsigned long lock_flags = 0; 4510 ssize_t len = -ENXIO; 4511 4512 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4513 res = (struct ipr_resource_entry *)sdev->hostdata; 4514 if (res) 4515 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle); 4516 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4517 return len; 4518 } 4519 4520 static struct device_attribute ipr_adapter_handle_attr = { 4521 .attr = { 4522 .name = "adapter_handle", 4523 .mode = S_IRUSR, 4524 }, 4525 .show = ipr_show_adapter_handle 4526 }; 4527 4528 /** 4529 * ipr_show_resource_path - Show the resource path or the resource address for 4530 * this device. 4531 * @dev: device struct 4532 * @attr: device attribute structure 4533 * @buf: buffer 4534 * 4535 * Return value: 4536 * number of bytes printed to buffer 4537 **/ 4538 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf) 4539 { 4540 struct scsi_device *sdev = to_scsi_device(dev); 4541 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4542 struct ipr_resource_entry *res; 4543 unsigned long lock_flags = 0; 4544 ssize_t len = -ENXIO; 4545 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4546 4547 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4548 res = (struct ipr_resource_entry *)sdev->hostdata; 4549 if (res && ioa_cfg->sis64) 4550 len = snprintf(buf, PAGE_SIZE, "%s\n", 4551 __ipr_format_res_path(res->res_path, buffer, 4552 sizeof(buffer))); 4553 else if (res) 4554 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no, 4555 res->bus, res->target, res->lun); 4556 4557 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4558 return len; 4559 } 4560 4561 static struct device_attribute ipr_resource_path_attr = { 4562 .attr = { 4563 .name = "resource_path", 4564 .mode = S_IRUGO, 4565 }, 4566 .show = ipr_show_resource_path 4567 }; 4568 4569 /** 4570 * ipr_show_device_id - Show the device_id for this device. 4571 * @dev: device struct 4572 * @attr: device attribute structure 4573 * @buf: buffer 4574 * 4575 * Return value: 4576 * number of bytes printed to buffer 4577 **/ 4578 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf) 4579 { 4580 struct scsi_device *sdev = to_scsi_device(dev); 4581 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4582 struct ipr_resource_entry *res; 4583 unsigned long lock_flags = 0; 4584 ssize_t len = -ENXIO; 4585 4586 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4587 res = (struct ipr_resource_entry *)sdev->hostdata; 4588 if (res && ioa_cfg->sis64) 4589 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id)); 4590 else if (res) 4591 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn); 4592 4593 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4594 return len; 4595 } 4596 4597 static struct device_attribute ipr_device_id_attr = { 4598 .attr = { 4599 .name = "device_id", 4600 .mode = S_IRUGO, 4601 }, 4602 .show = ipr_show_device_id 4603 }; 4604 4605 /** 4606 * ipr_show_resource_type - Show the resource type for this device. 4607 * @dev: device struct 4608 * @attr: device attribute structure 4609 * @buf: buffer 4610 * 4611 * Return value: 4612 * number of bytes printed to buffer 4613 **/ 4614 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf) 4615 { 4616 struct scsi_device *sdev = to_scsi_device(dev); 4617 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4618 struct ipr_resource_entry *res; 4619 unsigned long lock_flags = 0; 4620 ssize_t len = -ENXIO; 4621 4622 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4623 res = (struct ipr_resource_entry *)sdev->hostdata; 4624 4625 if (res) 4626 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type); 4627 4628 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4629 return len; 4630 } 4631 4632 static struct device_attribute ipr_resource_type_attr = { 4633 .attr = { 4634 .name = "resource_type", 4635 .mode = S_IRUGO, 4636 }, 4637 .show = ipr_show_resource_type 4638 }; 4639 4640 /** 4641 * ipr_show_raw_mode - Show the adapter's raw mode 4642 * @dev: class device struct 4643 * @buf: buffer 4644 * 4645 * Return value: 4646 * number of bytes printed to buffer 4647 **/ 4648 static ssize_t ipr_show_raw_mode(struct device *dev, 4649 struct device_attribute *attr, char *buf) 4650 { 4651 struct scsi_device *sdev = to_scsi_device(dev); 4652 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4653 struct ipr_resource_entry *res; 4654 unsigned long lock_flags = 0; 4655 ssize_t len; 4656 4657 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4658 res = (struct ipr_resource_entry *)sdev->hostdata; 4659 if (res) 4660 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode); 4661 else 4662 len = -ENXIO; 4663 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4664 return len; 4665 } 4666 4667 /** 4668 * ipr_store_raw_mode - Change the adapter's raw mode 4669 * @dev: class device struct 4670 * @buf: buffer 4671 * 4672 * Return value: 4673 * number of bytes printed to buffer 4674 **/ 4675 static ssize_t ipr_store_raw_mode(struct device *dev, 4676 struct device_attribute *attr, 4677 const char *buf, size_t count) 4678 { 4679 struct scsi_device *sdev = to_scsi_device(dev); 4680 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4681 struct ipr_resource_entry *res; 4682 unsigned long lock_flags = 0; 4683 ssize_t len; 4684 4685 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4686 res = (struct ipr_resource_entry *)sdev->hostdata; 4687 if (res) { 4688 if (ipr_is_af_dasd_device(res)) { 4689 res->raw_mode = simple_strtoul(buf, NULL, 10); 4690 len = strlen(buf); 4691 if (res->sdev) 4692 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n", 4693 res->raw_mode ? "enabled" : "disabled"); 4694 } else 4695 len = -EINVAL; 4696 } else 4697 len = -ENXIO; 4698 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4699 return len; 4700 } 4701 4702 static struct device_attribute ipr_raw_mode_attr = { 4703 .attr = { 4704 .name = "raw_mode", 4705 .mode = S_IRUGO | S_IWUSR, 4706 }, 4707 .show = ipr_show_raw_mode, 4708 .store = ipr_store_raw_mode 4709 }; 4710 4711 static struct device_attribute *ipr_dev_attrs[] = { 4712 &ipr_adapter_handle_attr, 4713 &ipr_resource_path_attr, 4714 &ipr_device_id_attr, 4715 &ipr_resource_type_attr, 4716 &ipr_raw_mode_attr, 4717 NULL, 4718 }; 4719 4720 /** 4721 * ipr_biosparam - Return the HSC mapping 4722 * @sdev: scsi device struct 4723 * @block_device: block device pointer 4724 * @capacity: capacity of the device 4725 * @parm: Array containing returned HSC values. 4726 * 4727 * This function generates the HSC parms that fdisk uses. 4728 * We want to make sure we return something that places partitions 4729 * on 4k boundaries for best performance with the IOA. 4730 * 4731 * Return value: 4732 * 0 on success 4733 **/ 4734 static int ipr_biosparam(struct scsi_device *sdev, 4735 struct block_device *block_device, 4736 sector_t capacity, int *parm) 4737 { 4738 int heads, sectors; 4739 sector_t cylinders; 4740 4741 heads = 128; 4742 sectors = 32; 4743 4744 cylinders = capacity; 4745 sector_div(cylinders, (128 * 32)); 4746 4747 /* return result */ 4748 parm[0] = heads; 4749 parm[1] = sectors; 4750 parm[2] = cylinders; 4751 4752 return 0; 4753 } 4754 4755 /** 4756 * ipr_find_starget - Find target based on bus/target. 4757 * @starget: scsi target struct 4758 * 4759 * Return value: 4760 * resource entry pointer if found / NULL if not found 4761 **/ 4762 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget) 4763 { 4764 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4765 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4766 struct ipr_resource_entry *res; 4767 4768 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4769 if ((res->bus == starget->channel) && 4770 (res->target == starget->id)) { 4771 return res; 4772 } 4773 } 4774 4775 return NULL; 4776 } 4777 4778 static struct ata_port_info sata_port_info; 4779 4780 /** 4781 * ipr_target_alloc - Prepare for commands to a SCSI target 4782 * @starget: scsi target struct 4783 * 4784 * If the device is a SATA device, this function allocates an 4785 * ATA port with libata, else it does nothing. 4786 * 4787 * Return value: 4788 * 0 on success / non-0 on failure 4789 **/ 4790 static int ipr_target_alloc(struct scsi_target *starget) 4791 { 4792 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4793 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4794 struct ipr_sata_port *sata_port; 4795 struct ata_port *ap; 4796 struct ipr_resource_entry *res; 4797 unsigned long lock_flags; 4798 4799 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4800 res = ipr_find_starget(starget); 4801 starget->hostdata = NULL; 4802 4803 if (res && ipr_is_gata(res)) { 4804 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4805 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL); 4806 if (!sata_port) 4807 return -ENOMEM; 4808 4809 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost); 4810 if (ap) { 4811 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4812 sata_port->ioa_cfg = ioa_cfg; 4813 sata_port->ap = ap; 4814 sata_port->res = res; 4815 4816 res->sata_port = sata_port; 4817 ap->private_data = sata_port; 4818 starget->hostdata = sata_port; 4819 } else { 4820 kfree(sata_port); 4821 return -ENOMEM; 4822 } 4823 } 4824 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4825 4826 return 0; 4827 } 4828 4829 /** 4830 * ipr_target_destroy - Destroy a SCSI target 4831 * @starget: scsi target struct 4832 * 4833 * If the device was a SATA device, this function frees the libata 4834 * ATA port, else it does nothing. 4835 * 4836 **/ 4837 static void ipr_target_destroy(struct scsi_target *starget) 4838 { 4839 struct ipr_sata_port *sata_port = starget->hostdata; 4840 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4841 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4842 4843 if (ioa_cfg->sis64) { 4844 if (!ipr_find_starget(starget)) { 4845 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS) 4846 clear_bit(starget->id, ioa_cfg->array_ids); 4847 else if (starget->channel == IPR_VSET_VIRTUAL_BUS) 4848 clear_bit(starget->id, ioa_cfg->vset_ids); 4849 else if (starget->channel == 0) 4850 clear_bit(starget->id, ioa_cfg->target_ids); 4851 } 4852 } 4853 4854 if (sata_port) { 4855 starget->hostdata = NULL; 4856 ata_sas_port_destroy(sata_port->ap); 4857 kfree(sata_port); 4858 } 4859 } 4860 4861 /** 4862 * ipr_find_sdev - Find device based on bus/target/lun. 4863 * @sdev: scsi device struct 4864 * 4865 * Return value: 4866 * resource entry pointer if found / NULL if not found 4867 **/ 4868 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev) 4869 { 4870 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4871 struct ipr_resource_entry *res; 4872 4873 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4874 if ((res->bus == sdev->channel) && 4875 (res->target == sdev->id) && 4876 (res->lun == sdev->lun)) 4877 return res; 4878 } 4879 4880 return NULL; 4881 } 4882 4883 /** 4884 * ipr_slave_destroy - Unconfigure a SCSI device 4885 * @sdev: scsi device struct 4886 * 4887 * Return value: 4888 * nothing 4889 **/ 4890 static void ipr_slave_destroy(struct scsi_device *sdev) 4891 { 4892 struct ipr_resource_entry *res; 4893 struct ipr_ioa_cfg *ioa_cfg; 4894 unsigned long lock_flags = 0; 4895 4896 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4897 4898 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4899 res = (struct ipr_resource_entry *) sdev->hostdata; 4900 if (res) { 4901 if (res->sata_port) 4902 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE; 4903 sdev->hostdata = NULL; 4904 res->sdev = NULL; 4905 res->sata_port = NULL; 4906 } 4907 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4908 } 4909 4910 /** 4911 * ipr_slave_configure - Configure a SCSI device 4912 * @sdev: scsi device struct 4913 * 4914 * This function configures the specified scsi device. 4915 * 4916 * Return value: 4917 * 0 on success 4918 **/ 4919 static int ipr_slave_configure(struct scsi_device *sdev) 4920 { 4921 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4922 struct ipr_resource_entry *res; 4923 struct ata_port *ap = NULL; 4924 unsigned long lock_flags = 0; 4925 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4926 4927 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4928 res = sdev->hostdata; 4929 if (res) { 4930 if (ipr_is_af_dasd_device(res)) 4931 sdev->type = TYPE_RAID; 4932 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { 4933 sdev->scsi_level = 4; 4934 sdev->no_uld_attach = 1; 4935 } 4936 if (ipr_is_vset_device(res)) { 4937 sdev->scsi_level = SCSI_SPC_3; 4938 blk_queue_rq_timeout(sdev->request_queue, 4939 IPR_VSET_RW_TIMEOUT); 4940 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); 4941 } 4942 if (ipr_is_gata(res) && res->sata_port) 4943 ap = res->sata_port->ap; 4944 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4945 4946 if (ap) { 4947 scsi_change_queue_depth(sdev, IPR_MAX_CMD_PER_ATA_LUN); 4948 ata_sas_slave_configure(sdev, ap); 4949 } 4950 4951 if (ioa_cfg->sis64) 4952 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n", 4953 ipr_format_res_path(ioa_cfg, 4954 res->res_path, buffer, sizeof(buffer))); 4955 return 0; 4956 } 4957 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4958 return 0; 4959 } 4960 4961 /** 4962 * ipr_ata_slave_alloc - Prepare for commands to a SATA device 4963 * @sdev: scsi device struct 4964 * 4965 * This function initializes an ATA port so that future commands 4966 * sent through queuecommand will work. 4967 * 4968 * Return value: 4969 * 0 on success 4970 **/ 4971 static int ipr_ata_slave_alloc(struct scsi_device *sdev) 4972 { 4973 struct ipr_sata_port *sata_port = NULL; 4974 int rc = -ENXIO; 4975 4976 ENTER; 4977 if (sdev->sdev_target) 4978 sata_port = sdev->sdev_target->hostdata; 4979 if (sata_port) { 4980 rc = ata_sas_port_init(sata_port->ap); 4981 if (rc == 0) 4982 rc = ata_sas_sync_probe(sata_port->ap); 4983 } 4984 4985 if (rc) 4986 ipr_slave_destroy(sdev); 4987 4988 LEAVE; 4989 return rc; 4990 } 4991 4992 /** 4993 * ipr_slave_alloc - Prepare for commands to a device. 4994 * @sdev: scsi device struct 4995 * 4996 * This function saves a pointer to the resource entry 4997 * in the scsi device struct if the device exists. We 4998 * can then use this pointer in ipr_queuecommand when 4999 * handling new commands. 5000 * 5001 * Return value: 5002 * 0 on success / -ENXIO if device does not exist 5003 **/ 5004 static int ipr_slave_alloc(struct scsi_device *sdev) 5005 { 5006 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 5007 struct ipr_resource_entry *res; 5008 unsigned long lock_flags; 5009 int rc = -ENXIO; 5010 5011 sdev->hostdata = NULL; 5012 5013 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5014 5015 res = ipr_find_sdev(sdev); 5016 if (res) { 5017 res->sdev = sdev; 5018 res->add_to_ml = 0; 5019 res->in_erp = 0; 5020 sdev->hostdata = res; 5021 if (!ipr_is_naca_model(res)) 5022 res->needs_sync_complete = 1; 5023 rc = 0; 5024 if (ipr_is_gata(res)) { 5025 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5026 return ipr_ata_slave_alloc(sdev); 5027 } 5028 } 5029 5030 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5031 5032 return rc; 5033 } 5034 5035 /** 5036 * ipr_match_lun - Match function for specified LUN 5037 * @ipr_cmd: ipr command struct 5038 * @device: device to match (sdev) 5039 * 5040 * Returns: 5041 * 1 if command matches sdev / 0 if command does not match sdev 5042 **/ 5043 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device) 5044 { 5045 if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device) 5046 return 1; 5047 return 0; 5048 } 5049 5050 /** 5051 * ipr_cmnd_is_free - Check if a command is free or not 5052 * @ipr_cmd ipr command struct 5053 * 5054 * Returns: 5055 * true / false 5056 **/ 5057 static bool ipr_cmnd_is_free(struct ipr_cmnd *ipr_cmd) 5058 { 5059 struct ipr_cmnd *loop_cmd; 5060 5061 list_for_each_entry(loop_cmd, &ipr_cmd->hrrq->hrrq_free_q, queue) { 5062 if (loop_cmd == ipr_cmd) 5063 return true; 5064 } 5065 5066 return false; 5067 } 5068 5069 /** 5070 * ipr_wait_for_ops - Wait for matching commands to complete 5071 * @ipr_cmd: ipr command struct 5072 * @device: device to match (sdev) 5073 * @match: match function to use 5074 * 5075 * Returns: 5076 * SUCCESS / FAILED 5077 **/ 5078 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device, 5079 int (*match)(struct ipr_cmnd *, void *)) 5080 { 5081 struct ipr_cmnd *ipr_cmd; 5082 int wait, i; 5083 unsigned long flags; 5084 struct ipr_hrr_queue *hrrq; 5085 signed long timeout = IPR_ABORT_TASK_TIMEOUT; 5086 DECLARE_COMPLETION_ONSTACK(comp); 5087 5088 ENTER; 5089 do { 5090 wait = 0; 5091 5092 for_each_hrrq(hrrq, ioa_cfg) { 5093 spin_lock_irqsave(hrrq->lock, flags); 5094 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 5095 ipr_cmd = ioa_cfg->ipr_cmnd_list[i]; 5096 if (!ipr_cmnd_is_free(ipr_cmd)) { 5097 if (match(ipr_cmd, device)) { 5098 ipr_cmd->eh_comp = ∁ 5099 wait++; 5100 } 5101 } 5102 } 5103 spin_unlock_irqrestore(hrrq->lock, flags); 5104 } 5105 5106 if (wait) { 5107 timeout = wait_for_completion_timeout(&comp, timeout); 5108 5109 if (!timeout) { 5110 wait = 0; 5111 5112 for_each_hrrq(hrrq, ioa_cfg) { 5113 spin_lock_irqsave(hrrq->lock, flags); 5114 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 5115 ipr_cmd = ioa_cfg->ipr_cmnd_list[i]; 5116 if (!ipr_cmnd_is_free(ipr_cmd)) { 5117 if (match(ipr_cmd, device)) { 5118 ipr_cmd->eh_comp = NULL; 5119 wait++; 5120 } 5121 } 5122 } 5123 spin_unlock_irqrestore(hrrq->lock, flags); 5124 } 5125 5126 if (wait) 5127 dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n"); 5128 LEAVE; 5129 return wait ? FAILED : SUCCESS; 5130 } 5131 } 5132 } while (wait); 5133 5134 LEAVE; 5135 return SUCCESS; 5136 } 5137 5138 static int ipr_eh_host_reset(struct scsi_cmnd *cmd) 5139 { 5140 struct ipr_ioa_cfg *ioa_cfg; 5141 unsigned long lock_flags = 0; 5142 int rc = SUCCESS; 5143 5144 ENTER; 5145 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata; 5146 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5147 5148 if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) { 5149 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV); 5150 dev_err(&ioa_cfg->pdev->dev, 5151 "Adapter being reset as a result of error recovery.\n"); 5152 5153 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 5154 ioa_cfg->sdt_state = GET_DUMP; 5155 } 5156 5157 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5158 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5159 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5160 5161 /* If we got hit with a host reset while we were already resetting 5162 the adapter for some reason, and the reset failed. */ 5163 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) { 5164 ipr_trace; 5165 rc = FAILED; 5166 } 5167 5168 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5169 LEAVE; 5170 return rc; 5171 } 5172 5173 /** 5174 * ipr_device_reset - Reset the device 5175 * @ioa_cfg: ioa config struct 5176 * @res: resource entry struct 5177 * 5178 * This function issues a device reset to the affected device. 5179 * If the device is a SCSI device, a LUN reset will be sent 5180 * to the device first. If that does not work, a target reset 5181 * will be sent. If the device is a SATA device, a PHY reset will 5182 * be sent. 5183 * 5184 * Return value: 5185 * 0 on success / non-zero on failure 5186 **/ 5187 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, 5188 struct ipr_resource_entry *res) 5189 { 5190 struct ipr_cmnd *ipr_cmd; 5191 struct ipr_ioarcb *ioarcb; 5192 struct ipr_cmd_pkt *cmd_pkt; 5193 struct ipr_ioarcb_ata_regs *regs; 5194 u32 ioasc; 5195 5196 ENTER; 5197 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5198 ioarcb = &ipr_cmd->ioarcb; 5199 cmd_pkt = &ioarcb->cmd_pkt; 5200 5201 if (ipr_cmd->ioa_cfg->sis64) { 5202 regs = &ipr_cmd->i.ata_ioadl.regs; 5203 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb)); 5204 } else 5205 regs = &ioarcb->u.add_data.u.regs; 5206 5207 ioarcb->res_handle = res->res_handle; 5208 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5209 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 5210 if (ipr_is_gata(res)) { 5211 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET; 5212 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags)); 5213 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 5214 } 5215 5216 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 5217 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5218 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 5219 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) { 5220 if (ipr_cmd->ioa_cfg->sis64) 5221 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata, 5222 sizeof(struct ipr_ioasa_gata)); 5223 else 5224 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata, 5225 sizeof(struct ipr_ioasa_gata)); 5226 } 5227 5228 LEAVE; 5229 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0; 5230 } 5231 5232 /** 5233 * ipr_sata_reset - Reset the SATA port 5234 * @link: SATA link to reset 5235 * @classes: class of the attached device 5236 * 5237 * This function issues a SATA phy reset to the affected ATA link. 5238 * 5239 * Return value: 5240 * 0 on success / non-zero on failure 5241 **/ 5242 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes, 5243 unsigned long deadline) 5244 { 5245 struct ipr_sata_port *sata_port = link->ap->private_data; 5246 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5247 struct ipr_resource_entry *res; 5248 unsigned long lock_flags = 0; 5249 int rc = -ENXIO; 5250 5251 ENTER; 5252 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5253 while (ioa_cfg->in_reset_reload) { 5254 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5255 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5256 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5257 } 5258 5259 res = sata_port->res; 5260 if (res) { 5261 rc = ipr_device_reset(ioa_cfg, res); 5262 *classes = res->ata_class; 5263 } 5264 5265 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5266 LEAVE; 5267 return rc; 5268 } 5269 5270 /** 5271 * ipr_eh_dev_reset - Reset the device 5272 * @scsi_cmd: scsi command struct 5273 * 5274 * This function issues a device reset to the affected device. 5275 * A LUN reset will be sent to the device first. If that does 5276 * not work, a target reset will be sent. 5277 * 5278 * Return value: 5279 * SUCCESS / FAILED 5280 **/ 5281 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd) 5282 { 5283 struct ipr_cmnd *ipr_cmd; 5284 struct ipr_ioa_cfg *ioa_cfg; 5285 struct ipr_resource_entry *res; 5286 struct ata_port *ap; 5287 int rc = 0, i; 5288 struct ipr_hrr_queue *hrrq; 5289 5290 ENTER; 5291 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 5292 res = scsi_cmd->device->hostdata; 5293 5294 if (!res) 5295 return FAILED; 5296 5297 /* 5298 * If we are currently going through reset/reload, return failed. This will force the 5299 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 5300 * reset to complete 5301 */ 5302 if (ioa_cfg->in_reset_reload) 5303 return FAILED; 5304 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 5305 return FAILED; 5306 5307 for_each_hrrq(hrrq, ioa_cfg) { 5308 spin_lock(&hrrq->_lock); 5309 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 5310 ipr_cmd = ioa_cfg->ipr_cmnd_list[i]; 5311 5312 if (ipr_cmd->ioarcb.res_handle == res->res_handle) { 5313 if (!ipr_cmd->qc) 5314 continue; 5315 if (ipr_cmnd_is_free(ipr_cmd)) 5316 continue; 5317 5318 ipr_cmd->done = ipr_sata_eh_done; 5319 if (!(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) { 5320 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT; 5321 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED; 5322 } 5323 } 5324 } 5325 spin_unlock(&hrrq->_lock); 5326 } 5327 res->resetting_device = 1; 5328 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); 5329 5330 if (ipr_is_gata(res) && res->sata_port) { 5331 ap = res->sata_port->ap; 5332 spin_unlock_irq(scsi_cmd->device->host->host_lock); 5333 ata_std_error_handler(ap); 5334 spin_lock_irq(scsi_cmd->device->host->host_lock); 5335 5336 for_each_hrrq(hrrq, ioa_cfg) { 5337 spin_lock(&hrrq->_lock); 5338 list_for_each_entry(ipr_cmd, 5339 &hrrq->hrrq_pending_q, queue) { 5340 if (ipr_cmd->ioarcb.res_handle == 5341 res->res_handle) { 5342 rc = -EIO; 5343 break; 5344 } 5345 } 5346 spin_unlock(&hrrq->_lock); 5347 } 5348 } else 5349 rc = ipr_device_reset(ioa_cfg, res); 5350 res->resetting_device = 0; 5351 res->reset_occurred = 1; 5352 5353 LEAVE; 5354 return rc ? FAILED : SUCCESS; 5355 } 5356 5357 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd) 5358 { 5359 int rc; 5360 struct ipr_ioa_cfg *ioa_cfg; 5361 5362 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata; 5363 5364 spin_lock_irq(cmd->device->host->host_lock); 5365 rc = __ipr_eh_dev_reset(cmd); 5366 spin_unlock_irq(cmd->device->host->host_lock); 5367 5368 if (rc == SUCCESS) 5369 rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun); 5370 5371 return rc; 5372 } 5373 5374 /** 5375 * ipr_bus_reset_done - Op done function for bus reset. 5376 * @ipr_cmd: ipr command struct 5377 * 5378 * This function is the op done function for a bus reset 5379 * 5380 * Return value: 5381 * none 5382 **/ 5383 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 5384 { 5385 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5386 struct ipr_resource_entry *res; 5387 5388 ENTER; 5389 if (!ioa_cfg->sis64) 5390 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 5391 if (res->res_handle == ipr_cmd->ioarcb.res_handle) { 5392 scsi_report_bus_reset(ioa_cfg->host, res->bus); 5393 break; 5394 } 5395 } 5396 5397 /* 5398 * If abort has not completed, indicate the reset has, else call the 5399 * abort's done function to wake the sleeping eh thread 5400 */ 5401 if (ipr_cmd->sibling->sibling) 5402 ipr_cmd->sibling->sibling = NULL; 5403 else 5404 ipr_cmd->sibling->done(ipr_cmd->sibling); 5405 5406 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 5407 LEAVE; 5408 } 5409 5410 /** 5411 * ipr_abort_timeout - An abort task has timed out 5412 * @ipr_cmd: ipr command struct 5413 * 5414 * This function handles when an abort task times out. If this 5415 * happens we issue a bus reset since we have resources tied 5416 * up that must be freed before returning to the midlayer. 5417 * 5418 * Return value: 5419 * none 5420 **/ 5421 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 5422 { 5423 struct ipr_cmnd *reset_cmd; 5424 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5425 struct ipr_cmd_pkt *cmd_pkt; 5426 unsigned long lock_flags = 0; 5427 5428 ENTER; 5429 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5430 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 5431 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5432 return; 5433 } 5434 5435 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n"); 5436 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5437 ipr_cmd->sibling = reset_cmd; 5438 reset_cmd->sibling = ipr_cmd; 5439 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 5440 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 5441 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5442 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 5443 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 5444 5445 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 5446 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5447 LEAVE; 5448 } 5449 5450 /** 5451 * ipr_cancel_op - Cancel specified op 5452 * @scsi_cmd: scsi command struct 5453 * 5454 * This function cancels specified op. 5455 * 5456 * Return value: 5457 * SUCCESS / FAILED 5458 **/ 5459 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd) 5460 { 5461 struct ipr_cmnd *ipr_cmd; 5462 struct ipr_ioa_cfg *ioa_cfg; 5463 struct ipr_resource_entry *res; 5464 struct ipr_cmd_pkt *cmd_pkt; 5465 u32 ioasc, int_reg; 5466 int i, op_found = 0; 5467 struct ipr_hrr_queue *hrrq; 5468 5469 ENTER; 5470 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 5471 res = scsi_cmd->device->hostdata; 5472 5473 /* If we are currently going through reset/reload, return failed. 5474 * This will force the mid-layer to call ipr_eh_host_reset, 5475 * which will then go to sleep and wait for the reset to complete 5476 */ 5477 if (ioa_cfg->in_reset_reload || 5478 ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 5479 return FAILED; 5480 if (!res) 5481 return FAILED; 5482 5483 /* 5484 * If we are aborting a timed out op, chances are that the timeout was caused 5485 * by a still not detected EEH error. In such cases, reading a register will 5486 * trigger the EEH recovery infrastructure. 5487 */ 5488 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 5489 5490 if (!ipr_is_gscsi(res)) 5491 return FAILED; 5492 5493 for_each_hrrq(hrrq, ioa_cfg) { 5494 spin_lock(&hrrq->_lock); 5495 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 5496 if (ioa_cfg->ipr_cmnd_list[i]->scsi_cmd == scsi_cmd) { 5497 if (!ipr_cmnd_is_free(ioa_cfg->ipr_cmnd_list[i])) { 5498 op_found = 1; 5499 break; 5500 } 5501 } 5502 } 5503 spin_unlock(&hrrq->_lock); 5504 } 5505 5506 if (!op_found) 5507 return SUCCESS; 5508 5509 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5510 ipr_cmd->ioarcb.res_handle = res->res_handle; 5511 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 5512 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5513 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 5514 ipr_cmd->u.sdev = scsi_cmd->device; 5515 5516 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n", 5517 scsi_cmd->cmnd[0]); 5518 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 5519 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5520 5521 /* 5522 * If the abort task timed out and we sent a bus reset, we will get 5523 * one the following responses to the abort 5524 */ 5525 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 5526 ioasc = 0; 5527 ipr_trace; 5528 } 5529 5530 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 5531 if (!ipr_is_naca_model(res)) 5532 res->needs_sync_complete = 1; 5533 5534 LEAVE; 5535 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS; 5536 } 5537 5538 /** 5539 * ipr_eh_abort - Abort a single op 5540 * @scsi_cmd: scsi command struct 5541 * 5542 * Return value: 5543 * 0 if scan in progress / 1 if scan is complete 5544 **/ 5545 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time) 5546 { 5547 unsigned long lock_flags; 5548 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 5549 int rc = 0; 5550 5551 spin_lock_irqsave(shost->host_lock, lock_flags); 5552 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done) 5553 rc = 1; 5554 if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2)) 5555 rc = 1; 5556 spin_unlock_irqrestore(shost->host_lock, lock_flags); 5557 return rc; 5558 } 5559 5560 /** 5561 * ipr_eh_host_reset - Reset the host adapter 5562 * @scsi_cmd: scsi command struct 5563 * 5564 * Return value: 5565 * SUCCESS / FAILED 5566 **/ 5567 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd) 5568 { 5569 unsigned long flags; 5570 int rc; 5571 struct ipr_ioa_cfg *ioa_cfg; 5572 5573 ENTER; 5574 5575 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 5576 5577 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 5578 rc = ipr_cancel_op(scsi_cmd); 5579 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 5580 5581 if (rc == SUCCESS) 5582 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun); 5583 LEAVE; 5584 return rc; 5585 } 5586 5587 /** 5588 * ipr_handle_other_interrupt - Handle "other" interrupts 5589 * @ioa_cfg: ioa config struct 5590 * @int_reg: interrupt register 5591 * 5592 * Return value: 5593 * IRQ_NONE / IRQ_HANDLED 5594 **/ 5595 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 5596 u32 int_reg) 5597 { 5598 irqreturn_t rc = IRQ_HANDLED; 5599 u32 int_mask_reg; 5600 5601 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 5602 int_reg &= ~int_mask_reg; 5603 5604 /* If an interrupt on the adapter did not occur, ignore it. 5605 * Or in the case of SIS 64, check for a stage change interrupt. 5606 */ 5607 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) { 5608 if (ioa_cfg->sis64) { 5609 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 5610 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 5611 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) { 5612 5613 /* clear stage change */ 5614 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg); 5615 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 5616 list_del(&ioa_cfg->reset_cmd->queue); 5617 del_timer(&ioa_cfg->reset_cmd->timer); 5618 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 5619 return IRQ_HANDLED; 5620 } 5621 } 5622 5623 return IRQ_NONE; 5624 } 5625 5626 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 5627 /* Mask the interrupt */ 5628 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 5629 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 5630 5631 list_del(&ioa_cfg->reset_cmd->queue); 5632 del_timer(&ioa_cfg->reset_cmd->timer); 5633 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 5634 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) { 5635 if (ioa_cfg->clear_isr) { 5636 if (ipr_debug && printk_ratelimit()) 5637 dev_err(&ioa_cfg->pdev->dev, 5638 "Spurious interrupt detected. 0x%08X\n", int_reg); 5639 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32); 5640 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5641 return IRQ_NONE; 5642 } 5643 } else { 5644 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 5645 ioa_cfg->ioa_unit_checked = 1; 5646 else if (int_reg & IPR_PCII_NO_HOST_RRQ) 5647 dev_err(&ioa_cfg->pdev->dev, 5648 "No Host RRQ. 0x%08X\n", int_reg); 5649 else 5650 dev_err(&ioa_cfg->pdev->dev, 5651 "Permanent IOA failure. 0x%08X\n", int_reg); 5652 5653 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 5654 ioa_cfg->sdt_state = GET_DUMP; 5655 5656 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 5657 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5658 } 5659 5660 return rc; 5661 } 5662 5663 /** 5664 * ipr_isr_eh - Interrupt service routine error handler 5665 * @ioa_cfg: ioa config struct 5666 * @msg: message to log 5667 * 5668 * Return value: 5669 * none 5670 **/ 5671 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number) 5672 { 5673 ioa_cfg->errors_logged++; 5674 dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number); 5675 5676 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 5677 ioa_cfg->sdt_state = GET_DUMP; 5678 5679 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5680 } 5681 5682 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget, 5683 struct list_head *doneq) 5684 { 5685 u32 ioasc; 5686 u16 cmd_index; 5687 struct ipr_cmnd *ipr_cmd; 5688 struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg; 5689 int num_hrrq = 0; 5690 5691 /* If interrupts are disabled, ignore the interrupt */ 5692 if (!hrr_queue->allow_interrupts) 5693 return 0; 5694 5695 while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5696 hrr_queue->toggle_bit) { 5697 5698 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) & 5699 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> 5700 IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 5701 5702 if (unlikely(cmd_index > hrr_queue->max_cmd_id || 5703 cmd_index < hrr_queue->min_cmd_id)) { 5704 ipr_isr_eh(ioa_cfg, 5705 "Invalid response handle from IOA: ", 5706 cmd_index); 5707 break; 5708 } 5709 5710 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 5711 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5712 5713 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 5714 5715 list_move_tail(&ipr_cmd->queue, doneq); 5716 5717 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) { 5718 hrr_queue->hrrq_curr++; 5719 } else { 5720 hrr_queue->hrrq_curr = hrr_queue->hrrq_start; 5721 hrr_queue->toggle_bit ^= 1u; 5722 } 5723 num_hrrq++; 5724 if (budget > 0 && num_hrrq >= budget) 5725 break; 5726 } 5727 5728 return num_hrrq; 5729 } 5730 5731 static int ipr_iopoll(struct irq_poll *iop, int budget) 5732 { 5733 struct ipr_ioa_cfg *ioa_cfg; 5734 struct ipr_hrr_queue *hrrq; 5735 struct ipr_cmnd *ipr_cmd, *temp; 5736 unsigned long hrrq_flags; 5737 int completed_ops; 5738 LIST_HEAD(doneq); 5739 5740 hrrq = container_of(iop, struct ipr_hrr_queue, iopoll); 5741 ioa_cfg = hrrq->ioa_cfg; 5742 5743 spin_lock_irqsave(hrrq->lock, hrrq_flags); 5744 completed_ops = ipr_process_hrrq(hrrq, budget, &doneq); 5745 5746 if (completed_ops < budget) 5747 irq_poll_complete(iop); 5748 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5749 5750 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) { 5751 list_del(&ipr_cmd->queue); 5752 del_timer(&ipr_cmd->timer); 5753 ipr_cmd->fast_done(ipr_cmd); 5754 } 5755 5756 return completed_ops; 5757 } 5758 5759 /** 5760 * ipr_isr - Interrupt service routine 5761 * @irq: irq number 5762 * @devp: pointer to ioa config struct 5763 * 5764 * Return value: 5765 * IRQ_NONE / IRQ_HANDLED 5766 **/ 5767 static irqreturn_t ipr_isr(int irq, void *devp) 5768 { 5769 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp; 5770 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg; 5771 unsigned long hrrq_flags = 0; 5772 u32 int_reg = 0; 5773 int num_hrrq = 0; 5774 int irq_none = 0; 5775 struct ipr_cmnd *ipr_cmd, *temp; 5776 irqreturn_t rc = IRQ_NONE; 5777 LIST_HEAD(doneq); 5778 5779 spin_lock_irqsave(hrrq->lock, hrrq_flags); 5780 /* If interrupts are disabled, ignore the interrupt */ 5781 if (!hrrq->allow_interrupts) { 5782 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5783 return IRQ_NONE; 5784 } 5785 5786 while (1) { 5787 if (ipr_process_hrrq(hrrq, -1, &doneq)) { 5788 rc = IRQ_HANDLED; 5789 5790 if (!ioa_cfg->clear_isr) 5791 break; 5792 5793 /* Clear the PCI interrupt */ 5794 num_hrrq = 0; 5795 do { 5796 writel(IPR_PCII_HRRQ_UPDATED, 5797 ioa_cfg->regs.clr_interrupt_reg32); 5798 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5799 } while (int_reg & IPR_PCII_HRRQ_UPDATED && 5800 num_hrrq++ < IPR_MAX_HRRQ_RETRIES); 5801 5802 } else if (rc == IRQ_NONE && irq_none == 0) { 5803 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5804 irq_none++; 5805 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES && 5806 int_reg & IPR_PCII_HRRQ_UPDATED) { 5807 ipr_isr_eh(ioa_cfg, 5808 "Error clearing HRRQ: ", num_hrrq); 5809 rc = IRQ_HANDLED; 5810 break; 5811 } else 5812 break; 5813 } 5814 5815 if (unlikely(rc == IRQ_NONE)) 5816 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 5817 5818 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5819 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) { 5820 list_del(&ipr_cmd->queue); 5821 del_timer(&ipr_cmd->timer); 5822 ipr_cmd->fast_done(ipr_cmd); 5823 } 5824 return rc; 5825 } 5826 5827 /** 5828 * ipr_isr_mhrrq - Interrupt service routine 5829 * @irq: irq number 5830 * @devp: pointer to ioa config struct 5831 * 5832 * Return value: 5833 * IRQ_NONE / IRQ_HANDLED 5834 **/ 5835 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp) 5836 { 5837 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp; 5838 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg; 5839 unsigned long hrrq_flags = 0; 5840 struct ipr_cmnd *ipr_cmd, *temp; 5841 irqreturn_t rc = IRQ_NONE; 5842 LIST_HEAD(doneq); 5843 5844 spin_lock_irqsave(hrrq->lock, hrrq_flags); 5845 5846 /* If interrupts are disabled, ignore the interrupt */ 5847 if (!hrrq->allow_interrupts) { 5848 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5849 return IRQ_NONE; 5850 } 5851 5852 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 5853 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5854 hrrq->toggle_bit) { 5855 irq_poll_sched(&hrrq->iopoll); 5856 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5857 return IRQ_HANDLED; 5858 } 5859 } else { 5860 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5861 hrrq->toggle_bit) 5862 5863 if (ipr_process_hrrq(hrrq, -1, &doneq)) 5864 rc = IRQ_HANDLED; 5865 } 5866 5867 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5868 5869 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) { 5870 list_del(&ipr_cmd->queue); 5871 del_timer(&ipr_cmd->timer); 5872 ipr_cmd->fast_done(ipr_cmd); 5873 } 5874 return rc; 5875 } 5876 5877 /** 5878 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer 5879 * @ioa_cfg: ioa config struct 5880 * @ipr_cmd: ipr command struct 5881 * 5882 * Return value: 5883 * 0 on success / -1 on failure 5884 **/ 5885 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg, 5886 struct ipr_cmnd *ipr_cmd) 5887 { 5888 int i, nseg; 5889 struct scatterlist *sg; 5890 u32 length; 5891 u32 ioadl_flags = 0; 5892 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5893 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5894 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 5895 5896 length = scsi_bufflen(scsi_cmd); 5897 if (!length) 5898 return 0; 5899 5900 nseg = scsi_dma_map(scsi_cmd); 5901 if (nseg < 0) { 5902 if (printk_ratelimit()) 5903 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n"); 5904 return -1; 5905 } 5906 5907 ipr_cmd->dma_use_sg = nseg; 5908 5909 ioarcb->data_transfer_length = cpu_to_be32(length); 5910 ioarcb->ioadl_len = 5911 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 5912 5913 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 5914 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5915 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5916 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) 5917 ioadl_flags = IPR_IOADL_FLAGS_READ; 5918 5919 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 5920 ioadl64[i].flags = cpu_to_be32(ioadl_flags); 5921 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg)); 5922 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg)); 5923 } 5924 5925 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5926 return 0; 5927 } 5928 5929 /** 5930 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 5931 * @ioa_cfg: ioa config struct 5932 * @ipr_cmd: ipr command struct 5933 * 5934 * Return value: 5935 * 0 on success / -1 on failure 5936 **/ 5937 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 5938 struct ipr_cmnd *ipr_cmd) 5939 { 5940 int i, nseg; 5941 struct scatterlist *sg; 5942 u32 length; 5943 u32 ioadl_flags = 0; 5944 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5945 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5946 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 5947 5948 length = scsi_bufflen(scsi_cmd); 5949 if (!length) 5950 return 0; 5951 5952 nseg = scsi_dma_map(scsi_cmd); 5953 if (nseg < 0) { 5954 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n"); 5955 return -1; 5956 } 5957 5958 ipr_cmd->dma_use_sg = nseg; 5959 5960 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 5961 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5962 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5963 ioarcb->data_transfer_length = cpu_to_be32(length); 5964 ioarcb->ioadl_len = 5965 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5966 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 5967 ioadl_flags = IPR_IOADL_FLAGS_READ; 5968 ioarcb->read_data_transfer_length = cpu_to_be32(length); 5969 ioarcb->read_ioadl_len = 5970 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5971 } 5972 5973 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) { 5974 ioadl = ioarcb->u.add_data.u.ioadl; 5975 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) + 5976 offsetof(struct ipr_ioarcb, u.add_data)); 5977 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 5978 } 5979 5980 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 5981 ioadl[i].flags_and_data_len = 5982 cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 5983 ioadl[i].address = cpu_to_be32(sg_dma_address(sg)); 5984 } 5985 5986 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5987 return 0; 5988 } 5989 5990 /** 5991 * __ipr_erp_done - Process completion of ERP for a device 5992 * @ipr_cmd: ipr command struct 5993 * 5994 * This function copies the sense buffer into the scsi_cmd 5995 * struct and pushes the scsi_done function. 5996 * 5997 * Return value: 5998 * nothing 5999 **/ 6000 static void __ipr_erp_done(struct ipr_cmnd *ipr_cmd) 6001 { 6002 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6003 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 6004 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6005 6006 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 6007 scsi_cmd->result |= (DID_ERROR << 16); 6008 scmd_printk(KERN_ERR, scsi_cmd, 6009 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 6010 } else { 6011 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 6012 SCSI_SENSE_BUFFERSIZE); 6013 } 6014 6015 if (res) { 6016 if (!ipr_is_naca_model(res)) 6017 res->needs_sync_complete = 1; 6018 res->in_erp = 0; 6019 } 6020 scsi_dma_unmap(ipr_cmd->scsi_cmd); 6021 scsi_cmd->scsi_done(scsi_cmd); 6022 if (ipr_cmd->eh_comp) 6023 complete(ipr_cmd->eh_comp); 6024 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6025 } 6026 6027 /** 6028 * ipr_erp_done - Process completion of ERP for a device 6029 * @ipr_cmd: ipr command struct 6030 * 6031 * This function copies the sense buffer into the scsi_cmd 6032 * struct and pushes the scsi_done function. 6033 * 6034 * Return value: 6035 * nothing 6036 **/ 6037 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 6038 { 6039 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq; 6040 unsigned long hrrq_flags; 6041 6042 spin_lock_irqsave(&hrrq->_lock, hrrq_flags); 6043 __ipr_erp_done(ipr_cmd); 6044 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags); 6045 } 6046 6047 /** 6048 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 6049 * @ipr_cmd: ipr command struct 6050 * 6051 * Return value: 6052 * none 6053 **/ 6054 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 6055 { 6056 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6057 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 6058 dma_addr_t dma_addr = ipr_cmd->dma_addr; 6059 6060 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 6061 ioarcb->data_transfer_length = 0; 6062 ioarcb->read_data_transfer_length = 0; 6063 ioarcb->ioadl_len = 0; 6064 ioarcb->read_ioadl_len = 0; 6065 ioasa->hdr.ioasc = 0; 6066 ioasa->hdr.residual_data_len = 0; 6067 6068 if (ipr_cmd->ioa_cfg->sis64) 6069 ioarcb->u.sis64_addr_data.data_ioadl_addr = 6070 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 6071 else { 6072 ioarcb->write_ioadl_addr = 6073 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 6074 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 6075 } 6076 } 6077 6078 /** 6079 * __ipr_erp_request_sense - Send request sense to a device 6080 * @ipr_cmd: ipr command struct 6081 * 6082 * This function sends a request sense to a device as a result 6083 * of a check condition. 6084 * 6085 * Return value: 6086 * nothing 6087 **/ 6088 static void __ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 6089 { 6090 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 6091 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6092 6093 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 6094 __ipr_erp_done(ipr_cmd); 6095 return; 6096 } 6097 6098 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 6099 6100 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 6101 cmd_pkt->cdb[0] = REQUEST_SENSE; 6102 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 6103 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 6104 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6105 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 6106 6107 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma, 6108 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST); 6109 6110 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 6111 IPR_REQUEST_SENSE_TIMEOUT * 2); 6112 } 6113 6114 /** 6115 * ipr_erp_request_sense - Send request sense to a device 6116 * @ipr_cmd: ipr command struct 6117 * 6118 * This function sends a request sense to a device as a result 6119 * of a check condition. 6120 * 6121 * Return value: 6122 * nothing 6123 **/ 6124 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 6125 { 6126 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq; 6127 unsigned long hrrq_flags; 6128 6129 spin_lock_irqsave(&hrrq->_lock, hrrq_flags); 6130 __ipr_erp_request_sense(ipr_cmd); 6131 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags); 6132 } 6133 6134 /** 6135 * ipr_erp_cancel_all - Send cancel all to a device 6136 * @ipr_cmd: ipr command struct 6137 * 6138 * This function sends a cancel all to a device to clear the 6139 * queue. If we are running TCQ on the device, QERR is set to 1, 6140 * which means all outstanding ops have been dropped on the floor. 6141 * Cancel all will return them to us. 6142 * 6143 * Return value: 6144 * nothing 6145 **/ 6146 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 6147 { 6148 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6149 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 6150 struct ipr_cmd_pkt *cmd_pkt; 6151 6152 res->in_erp = 1; 6153 6154 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 6155 6156 if (!scsi_cmd->device->simple_tags) { 6157 __ipr_erp_request_sense(ipr_cmd); 6158 return; 6159 } 6160 6161 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 6162 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 6163 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 6164 6165 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 6166 IPR_CANCEL_ALL_TIMEOUT); 6167 } 6168 6169 /** 6170 * ipr_dump_ioasa - Dump contents of IOASA 6171 * @ioa_cfg: ioa config struct 6172 * @ipr_cmd: ipr command struct 6173 * @res: resource entry struct 6174 * 6175 * This function is invoked by the interrupt handler when ops 6176 * fail. It will log the IOASA if appropriate. Only called 6177 * for GPDD ops. 6178 * 6179 * Return value: 6180 * none 6181 **/ 6182 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 6183 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res) 6184 { 6185 int i; 6186 u16 data_len; 6187 u32 ioasc, fd_ioasc; 6188 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 6189 __be32 *ioasa_data = (__be32 *)ioasa; 6190 int error_index; 6191 6192 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK; 6193 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK; 6194 6195 if (0 == ioasc) 6196 return; 6197 6198 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 6199 return; 6200 6201 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc) 6202 error_index = ipr_get_error(fd_ioasc); 6203 else 6204 error_index = ipr_get_error(ioasc); 6205 6206 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 6207 /* Don't log an error if the IOA already logged one */ 6208 if (ioasa->hdr.ilid != 0) 6209 return; 6210 6211 if (!ipr_is_gscsi(res)) 6212 return; 6213 6214 if (ipr_error_table[error_index].log_ioasa == 0) 6215 return; 6216 } 6217 6218 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error); 6219 6220 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len); 6221 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len) 6222 data_len = sizeof(struct ipr_ioasa64); 6223 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len) 6224 data_len = sizeof(struct ipr_ioasa); 6225 6226 ipr_err("IOASA Dump:\n"); 6227 6228 for (i = 0; i < data_len / 4; i += 4) { 6229 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 6230 be32_to_cpu(ioasa_data[i]), 6231 be32_to_cpu(ioasa_data[i+1]), 6232 be32_to_cpu(ioasa_data[i+2]), 6233 be32_to_cpu(ioasa_data[i+3])); 6234 } 6235 } 6236 6237 /** 6238 * ipr_gen_sense - Generate SCSI sense data from an IOASA 6239 * @ioasa: IOASA 6240 * @sense_buf: sense data buffer 6241 * 6242 * Return value: 6243 * none 6244 **/ 6245 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 6246 { 6247 u32 failing_lba; 6248 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 6249 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 6250 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 6251 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc); 6252 6253 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 6254 6255 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 6256 return; 6257 6258 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 6259 6260 if (ipr_is_vset_device(res) && 6261 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 6262 ioasa->u.vset.failing_lba_hi != 0) { 6263 sense_buf[0] = 0x72; 6264 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 6265 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 6266 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 6267 6268 sense_buf[7] = 12; 6269 sense_buf[8] = 0; 6270 sense_buf[9] = 0x0A; 6271 sense_buf[10] = 0x80; 6272 6273 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 6274 6275 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 6276 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 6277 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 6278 sense_buf[15] = failing_lba & 0x000000ff; 6279 6280 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 6281 6282 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 6283 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 6284 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 6285 sense_buf[19] = failing_lba & 0x000000ff; 6286 } else { 6287 sense_buf[0] = 0x70; 6288 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 6289 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 6290 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 6291 6292 /* Illegal request */ 6293 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 6294 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 6295 sense_buf[7] = 10; /* additional length */ 6296 6297 /* IOARCB was in error */ 6298 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 6299 sense_buf[15] = 0xC0; 6300 else /* Parameter data was invalid */ 6301 sense_buf[15] = 0x80; 6302 6303 sense_buf[16] = 6304 ((IPR_FIELD_POINTER_MASK & 6305 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff; 6306 sense_buf[17] = 6307 (IPR_FIELD_POINTER_MASK & 6308 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff; 6309 } else { 6310 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 6311 if (ipr_is_vset_device(res)) 6312 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 6313 else 6314 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 6315 6316 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 6317 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 6318 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 6319 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 6320 sense_buf[6] = failing_lba & 0x000000ff; 6321 } 6322 6323 sense_buf[7] = 6; /* additional length */ 6324 } 6325 } 6326 } 6327 6328 /** 6329 * ipr_get_autosense - Copy autosense data to sense buffer 6330 * @ipr_cmd: ipr command struct 6331 * 6332 * This function copies the autosense buffer to the buffer 6333 * in the scsi_cmd, if there is autosense available. 6334 * 6335 * Return value: 6336 * 1 if autosense was available / 0 if not 6337 **/ 6338 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) 6339 { 6340 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 6341 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64; 6342 6343 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0) 6344 return 0; 6345 6346 if (ipr_cmd->ioa_cfg->sis64) 6347 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data, 6348 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len), 6349 SCSI_SENSE_BUFFERSIZE)); 6350 else 6351 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, 6352 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), 6353 SCSI_SENSE_BUFFERSIZE)); 6354 return 1; 6355 } 6356 6357 /** 6358 * ipr_erp_start - Process an error response for a SCSI op 6359 * @ioa_cfg: ioa config struct 6360 * @ipr_cmd: ipr command struct 6361 * 6362 * This function determines whether or not to initiate ERP 6363 * on the affected device. 6364 * 6365 * Return value: 6366 * nothing 6367 **/ 6368 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 6369 struct ipr_cmnd *ipr_cmd) 6370 { 6371 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6372 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 6373 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6374 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK; 6375 6376 if (!res) { 6377 __ipr_scsi_eh_done(ipr_cmd); 6378 return; 6379 } 6380 6381 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS) 6382 ipr_gen_sense(ipr_cmd); 6383 6384 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 6385 6386 switch (masked_ioasc) { 6387 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 6388 if (ipr_is_naca_model(res)) 6389 scsi_cmd->result |= (DID_ABORT << 16); 6390 else 6391 scsi_cmd->result |= (DID_IMM_RETRY << 16); 6392 break; 6393 case IPR_IOASC_IR_RESOURCE_HANDLE: 6394 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: 6395 scsi_cmd->result |= (DID_NO_CONNECT << 16); 6396 break; 6397 case IPR_IOASC_HW_SEL_TIMEOUT: 6398 scsi_cmd->result |= (DID_NO_CONNECT << 16); 6399 if (!ipr_is_naca_model(res)) 6400 res->needs_sync_complete = 1; 6401 break; 6402 case IPR_IOASC_SYNC_REQUIRED: 6403 if (!res->in_erp) 6404 res->needs_sync_complete = 1; 6405 scsi_cmd->result |= (DID_IMM_RETRY << 16); 6406 break; 6407 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 6408 case IPR_IOASA_IR_DUAL_IOA_DISABLED: 6409 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 6410 break; 6411 case IPR_IOASC_BUS_WAS_RESET: 6412 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 6413 /* 6414 * Report the bus reset and ask for a retry. The device 6415 * will give CC/UA the next command. 6416 */ 6417 if (!res->resetting_device) 6418 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 6419 scsi_cmd->result |= (DID_ERROR << 16); 6420 if (!ipr_is_naca_model(res)) 6421 res->needs_sync_complete = 1; 6422 break; 6423 case IPR_IOASC_HW_DEV_BUS_STATUS: 6424 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 6425 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 6426 if (!ipr_get_autosense(ipr_cmd)) { 6427 if (!ipr_is_naca_model(res)) { 6428 ipr_erp_cancel_all(ipr_cmd); 6429 return; 6430 } 6431 } 6432 } 6433 if (!ipr_is_naca_model(res)) 6434 res->needs_sync_complete = 1; 6435 break; 6436 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 6437 break; 6438 case IPR_IOASC_IR_NON_OPTIMIZED: 6439 if (res->raw_mode) { 6440 res->raw_mode = 0; 6441 scsi_cmd->result |= (DID_IMM_RETRY << 16); 6442 } else 6443 scsi_cmd->result |= (DID_ERROR << 16); 6444 break; 6445 default: 6446 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 6447 scsi_cmd->result |= (DID_ERROR << 16); 6448 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) 6449 res->needs_sync_complete = 1; 6450 break; 6451 } 6452 6453 scsi_dma_unmap(ipr_cmd->scsi_cmd); 6454 scsi_cmd->scsi_done(scsi_cmd); 6455 if (ipr_cmd->eh_comp) 6456 complete(ipr_cmd->eh_comp); 6457 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6458 } 6459 6460 /** 6461 * ipr_scsi_done - mid-layer done function 6462 * @ipr_cmd: ipr command struct 6463 * 6464 * This function is invoked by the interrupt handler for 6465 * ops generated by the SCSI mid-layer 6466 * 6467 * Return value: 6468 * none 6469 **/ 6470 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 6471 { 6472 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6473 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6474 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6475 unsigned long lock_flags; 6476 6477 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len)); 6478 6479 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 6480 scsi_dma_unmap(scsi_cmd); 6481 6482 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags); 6483 scsi_cmd->scsi_done(scsi_cmd); 6484 if (ipr_cmd->eh_comp) 6485 complete(ipr_cmd->eh_comp); 6486 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6487 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags); 6488 } else { 6489 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6490 spin_lock(&ipr_cmd->hrrq->_lock); 6491 ipr_erp_start(ioa_cfg, ipr_cmd); 6492 spin_unlock(&ipr_cmd->hrrq->_lock); 6493 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6494 } 6495 } 6496 6497 /** 6498 * ipr_queuecommand - Queue a mid-layer request 6499 * @shost: scsi host struct 6500 * @scsi_cmd: scsi command struct 6501 * 6502 * This function queues a request generated by the mid-layer. 6503 * 6504 * Return value: 6505 * 0 on success 6506 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 6507 * SCSI_MLQUEUE_HOST_BUSY if host is busy 6508 **/ 6509 static int ipr_queuecommand(struct Scsi_Host *shost, 6510 struct scsi_cmnd *scsi_cmd) 6511 { 6512 struct ipr_ioa_cfg *ioa_cfg; 6513 struct ipr_resource_entry *res; 6514 struct ipr_ioarcb *ioarcb; 6515 struct ipr_cmnd *ipr_cmd; 6516 unsigned long hrrq_flags, lock_flags; 6517 int rc; 6518 struct ipr_hrr_queue *hrrq; 6519 int hrrq_id; 6520 6521 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 6522 6523 scsi_cmd->result = (DID_OK << 16); 6524 res = scsi_cmd->device->hostdata; 6525 6526 if (ipr_is_gata(res) && res->sata_port) { 6527 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6528 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap); 6529 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6530 return rc; 6531 } 6532 6533 hrrq_id = ipr_get_hrrq_index(ioa_cfg); 6534 hrrq = &ioa_cfg->hrrq[hrrq_id]; 6535 6536 spin_lock_irqsave(hrrq->lock, hrrq_flags); 6537 /* 6538 * We are currently blocking all devices due to a host reset 6539 * We have told the host to stop giving us new requests, but 6540 * ERP ops don't count. FIXME 6541 */ 6542 if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) { 6543 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6544 return SCSI_MLQUEUE_HOST_BUSY; 6545 } 6546 6547 /* 6548 * FIXME - Create scsi_set_host_offline interface 6549 * and the ioa_is_dead check can be removed 6550 */ 6551 if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) { 6552 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6553 goto err_nodev; 6554 } 6555 6556 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq); 6557 if (ipr_cmd == NULL) { 6558 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6559 return SCSI_MLQUEUE_HOST_BUSY; 6560 } 6561 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6562 6563 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done); 6564 ioarcb = &ipr_cmd->ioarcb; 6565 6566 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 6567 ipr_cmd->scsi_cmd = scsi_cmd; 6568 ipr_cmd->done = ipr_scsi_eh_done; 6569 6570 if (ipr_is_gscsi(res)) { 6571 if (scsi_cmd->underflow == 0) 6572 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6573 6574 if (res->reset_occurred) { 6575 res->reset_occurred = 0; 6576 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 6577 } 6578 } 6579 6580 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 6581 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 6582 6583 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 6584 if (scsi_cmd->flags & SCMD_TAGGED) 6585 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK; 6586 else 6587 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK; 6588 } 6589 6590 if (scsi_cmd->cmnd[0] >= 0xC0 && 6591 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) { 6592 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6593 } 6594 if (res->raw_mode && ipr_is_af_dasd_device(res)) { 6595 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE; 6596 6597 if (scsi_cmd->underflow == 0) 6598 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6599 } 6600 6601 if (ioa_cfg->sis64) 6602 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd); 6603 else 6604 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 6605 6606 spin_lock_irqsave(hrrq->lock, hrrq_flags); 6607 if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) { 6608 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q); 6609 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6610 if (!rc) 6611 scsi_dma_unmap(scsi_cmd); 6612 return SCSI_MLQUEUE_HOST_BUSY; 6613 } 6614 6615 if (unlikely(hrrq->ioa_is_dead)) { 6616 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q); 6617 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6618 scsi_dma_unmap(scsi_cmd); 6619 goto err_nodev; 6620 } 6621 6622 ioarcb->res_handle = res->res_handle; 6623 if (res->needs_sync_complete) { 6624 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 6625 res->needs_sync_complete = 0; 6626 } 6627 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q); 6628 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res)); 6629 ipr_send_command(ipr_cmd); 6630 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6631 return 0; 6632 6633 err_nodev: 6634 spin_lock_irqsave(hrrq->lock, hrrq_flags); 6635 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 6636 scsi_cmd->result = (DID_NO_CONNECT << 16); 6637 scsi_cmd->scsi_done(scsi_cmd); 6638 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6639 return 0; 6640 } 6641 6642 /** 6643 * ipr_ioctl - IOCTL handler 6644 * @sdev: scsi device struct 6645 * @cmd: IOCTL cmd 6646 * @arg: IOCTL arg 6647 * 6648 * Return value: 6649 * 0 on success / other on failure 6650 **/ 6651 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) 6652 { 6653 struct ipr_resource_entry *res; 6654 6655 res = (struct ipr_resource_entry *)sdev->hostdata; 6656 if (res && ipr_is_gata(res)) { 6657 if (cmd == HDIO_GET_IDENTITY) 6658 return -ENOTTY; 6659 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg); 6660 } 6661 6662 return -EINVAL; 6663 } 6664 6665 /** 6666 * ipr_info - Get information about the card/driver 6667 * @scsi_host: scsi host struct 6668 * 6669 * Return value: 6670 * pointer to buffer with description string 6671 **/ 6672 static const char *ipr_ioa_info(struct Scsi_Host *host) 6673 { 6674 static char buffer[512]; 6675 struct ipr_ioa_cfg *ioa_cfg; 6676 unsigned long lock_flags = 0; 6677 6678 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 6679 6680 spin_lock_irqsave(host->host_lock, lock_flags); 6681 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 6682 spin_unlock_irqrestore(host->host_lock, lock_flags); 6683 6684 return buffer; 6685 } 6686 6687 static struct scsi_host_template driver_template = { 6688 .module = THIS_MODULE, 6689 .name = "IPR", 6690 .info = ipr_ioa_info, 6691 .ioctl = ipr_ioctl, 6692 .queuecommand = ipr_queuecommand, 6693 .eh_abort_handler = ipr_eh_abort, 6694 .eh_device_reset_handler = ipr_eh_dev_reset, 6695 .eh_host_reset_handler = ipr_eh_host_reset, 6696 .slave_alloc = ipr_slave_alloc, 6697 .slave_configure = ipr_slave_configure, 6698 .slave_destroy = ipr_slave_destroy, 6699 .scan_finished = ipr_scan_finished, 6700 .target_alloc = ipr_target_alloc, 6701 .target_destroy = ipr_target_destroy, 6702 .change_queue_depth = ipr_change_queue_depth, 6703 .bios_param = ipr_biosparam, 6704 .can_queue = IPR_MAX_COMMANDS, 6705 .this_id = -1, 6706 .sg_tablesize = IPR_MAX_SGLIST, 6707 .max_sectors = IPR_IOA_MAX_SECTORS, 6708 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 6709 .use_clustering = ENABLE_CLUSTERING, 6710 .shost_attrs = ipr_ioa_attrs, 6711 .sdev_attrs = ipr_dev_attrs, 6712 .proc_name = IPR_NAME, 6713 }; 6714 6715 /** 6716 * ipr_ata_phy_reset - libata phy_reset handler 6717 * @ap: ata port to reset 6718 * 6719 **/ 6720 static void ipr_ata_phy_reset(struct ata_port *ap) 6721 { 6722 unsigned long flags; 6723 struct ipr_sata_port *sata_port = ap->private_data; 6724 struct ipr_resource_entry *res = sata_port->res; 6725 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 6726 int rc; 6727 6728 ENTER; 6729 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6730 while (ioa_cfg->in_reset_reload) { 6731 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6732 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6733 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6734 } 6735 6736 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) 6737 goto out_unlock; 6738 6739 rc = ipr_device_reset(ioa_cfg, res); 6740 6741 if (rc) { 6742 ap->link.device[0].class = ATA_DEV_NONE; 6743 goto out_unlock; 6744 } 6745 6746 ap->link.device[0].class = res->ata_class; 6747 if (ap->link.device[0].class == ATA_DEV_UNKNOWN) 6748 ap->link.device[0].class = ATA_DEV_NONE; 6749 6750 out_unlock: 6751 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6752 LEAVE; 6753 } 6754 6755 /** 6756 * ipr_ata_post_internal - Cleanup after an internal command 6757 * @qc: ATA queued command 6758 * 6759 * Return value: 6760 * none 6761 **/ 6762 static void ipr_ata_post_internal(struct ata_queued_cmd *qc) 6763 { 6764 struct ipr_sata_port *sata_port = qc->ap->private_data; 6765 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 6766 struct ipr_cmnd *ipr_cmd; 6767 struct ipr_hrr_queue *hrrq; 6768 unsigned long flags; 6769 6770 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6771 while (ioa_cfg->in_reset_reload) { 6772 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6773 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6774 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6775 } 6776 6777 for_each_hrrq(hrrq, ioa_cfg) { 6778 spin_lock(&hrrq->_lock); 6779 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) { 6780 if (ipr_cmd->qc == qc) { 6781 ipr_device_reset(ioa_cfg, sata_port->res); 6782 break; 6783 } 6784 } 6785 spin_unlock(&hrrq->_lock); 6786 } 6787 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6788 } 6789 6790 /** 6791 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure 6792 * @regs: destination 6793 * @tf: source ATA taskfile 6794 * 6795 * Return value: 6796 * none 6797 **/ 6798 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs, 6799 struct ata_taskfile *tf) 6800 { 6801 regs->feature = tf->feature; 6802 regs->nsect = tf->nsect; 6803 regs->lbal = tf->lbal; 6804 regs->lbam = tf->lbam; 6805 regs->lbah = tf->lbah; 6806 regs->device = tf->device; 6807 regs->command = tf->command; 6808 regs->hob_feature = tf->hob_feature; 6809 regs->hob_nsect = tf->hob_nsect; 6810 regs->hob_lbal = tf->hob_lbal; 6811 regs->hob_lbam = tf->hob_lbam; 6812 regs->hob_lbah = tf->hob_lbah; 6813 regs->ctl = tf->ctl; 6814 } 6815 6816 /** 6817 * ipr_sata_done - done function for SATA commands 6818 * @ipr_cmd: ipr command struct 6819 * 6820 * This function is invoked by the interrupt handler for 6821 * ops generated by the SCSI mid-layer to SATA devices 6822 * 6823 * Return value: 6824 * none 6825 **/ 6826 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd) 6827 { 6828 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6829 struct ata_queued_cmd *qc = ipr_cmd->qc; 6830 struct ipr_sata_port *sata_port = qc->ap->private_data; 6831 struct ipr_resource_entry *res = sata_port->res; 6832 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6833 6834 spin_lock(&ipr_cmd->hrrq->_lock); 6835 if (ipr_cmd->ioa_cfg->sis64) 6836 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata, 6837 sizeof(struct ipr_ioasa_gata)); 6838 else 6839 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata, 6840 sizeof(struct ipr_ioasa_gata)); 6841 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 6842 6843 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET) 6844 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target); 6845 6846 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 6847 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status); 6848 else 6849 qc->err_mask |= ac_err_mask(sata_port->ioasa.status); 6850 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6851 spin_unlock(&ipr_cmd->hrrq->_lock); 6852 ata_qc_complete(qc); 6853 } 6854 6855 /** 6856 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list 6857 * @ipr_cmd: ipr command struct 6858 * @qc: ATA queued command 6859 * 6860 **/ 6861 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd, 6862 struct ata_queued_cmd *qc) 6863 { 6864 u32 ioadl_flags = 0; 6865 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6866 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64; 6867 struct ipr_ioadl64_desc *last_ioadl64 = NULL; 6868 int len = qc->nbytes; 6869 struct scatterlist *sg; 6870 unsigned int si; 6871 dma_addr_t dma_addr = ipr_cmd->dma_addr; 6872 6873 if (len == 0) 6874 return; 6875 6876 if (qc->dma_dir == DMA_TO_DEVICE) { 6877 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 6878 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6879 } else if (qc->dma_dir == DMA_FROM_DEVICE) 6880 ioadl_flags = IPR_IOADL_FLAGS_READ; 6881 6882 ioarcb->data_transfer_length = cpu_to_be32(len); 6883 ioarcb->ioadl_len = 6884 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 6885 ioarcb->u.sis64_addr_data.data_ioadl_addr = 6886 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64)); 6887 6888 for_each_sg(qc->sg, sg, qc->n_elem, si) { 6889 ioadl64->flags = cpu_to_be32(ioadl_flags); 6890 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg)); 6891 ioadl64->address = cpu_to_be64(sg_dma_address(sg)); 6892 6893 last_ioadl64 = ioadl64; 6894 ioadl64++; 6895 } 6896 6897 if (likely(last_ioadl64)) 6898 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 6899 } 6900 6901 /** 6902 * ipr_build_ata_ioadl - Build an ATA scatter/gather list 6903 * @ipr_cmd: ipr command struct 6904 * @qc: ATA queued command 6905 * 6906 **/ 6907 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, 6908 struct ata_queued_cmd *qc) 6909 { 6910 u32 ioadl_flags = 0; 6911 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6912 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 6913 struct ipr_ioadl_desc *last_ioadl = NULL; 6914 int len = qc->nbytes; 6915 struct scatterlist *sg; 6916 unsigned int si; 6917 6918 if (len == 0) 6919 return; 6920 6921 if (qc->dma_dir == DMA_TO_DEVICE) { 6922 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 6923 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6924 ioarcb->data_transfer_length = cpu_to_be32(len); 6925 ioarcb->ioadl_len = 6926 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 6927 } else if (qc->dma_dir == DMA_FROM_DEVICE) { 6928 ioadl_flags = IPR_IOADL_FLAGS_READ; 6929 ioarcb->read_data_transfer_length = cpu_to_be32(len); 6930 ioarcb->read_ioadl_len = 6931 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 6932 } 6933 6934 for_each_sg(qc->sg, sg, qc->n_elem, si) { 6935 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 6936 ioadl->address = cpu_to_be32(sg_dma_address(sg)); 6937 6938 last_ioadl = ioadl; 6939 ioadl++; 6940 } 6941 6942 if (likely(last_ioadl)) 6943 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 6944 } 6945 6946 /** 6947 * ipr_qc_defer - Get a free ipr_cmd 6948 * @qc: queued command 6949 * 6950 * Return value: 6951 * 0 if success 6952 **/ 6953 static int ipr_qc_defer(struct ata_queued_cmd *qc) 6954 { 6955 struct ata_port *ap = qc->ap; 6956 struct ipr_sata_port *sata_port = ap->private_data; 6957 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 6958 struct ipr_cmnd *ipr_cmd; 6959 struct ipr_hrr_queue *hrrq; 6960 int hrrq_id; 6961 6962 hrrq_id = ipr_get_hrrq_index(ioa_cfg); 6963 hrrq = &ioa_cfg->hrrq[hrrq_id]; 6964 6965 qc->lldd_task = NULL; 6966 spin_lock(&hrrq->_lock); 6967 if (unlikely(hrrq->ioa_is_dead)) { 6968 spin_unlock(&hrrq->_lock); 6969 return 0; 6970 } 6971 6972 if (unlikely(!hrrq->allow_cmds)) { 6973 spin_unlock(&hrrq->_lock); 6974 return ATA_DEFER_LINK; 6975 } 6976 6977 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq); 6978 if (ipr_cmd == NULL) { 6979 spin_unlock(&hrrq->_lock); 6980 return ATA_DEFER_LINK; 6981 } 6982 6983 qc->lldd_task = ipr_cmd; 6984 spin_unlock(&hrrq->_lock); 6985 return 0; 6986 } 6987 6988 /** 6989 * ipr_qc_issue - Issue a SATA qc to a device 6990 * @qc: queued command 6991 * 6992 * Return value: 6993 * 0 if success 6994 **/ 6995 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) 6996 { 6997 struct ata_port *ap = qc->ap; 6998 struct ipr_sata_port *sata_port = ap->private_data; 6999 struct ipr_resource_entry *res = sata_port->res; 7000 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 7001 struct ipr_cmnd *ipr_cmd; 7002 struct ipr_ioarcb *ioarcb; 7003 struct ipr_ioarcb_ata_regs *regs; 7004 7005 if (qc->lldd_task == NULL) 7006 ipr_qc_defer(qc); 7007 7008 ipr_cmd = qc->lldd_task; 7009 if (ipr_cmd == NULL) 7010 return AC_ERR_SYSTEM; 7011 7012 qc->lldd_task = NULL; 7013 spin_lock(&ipr_cmd->hrrq->_lock); 7014 if (unlikely(!ipr_cmd->hrrq->allow_cmds || 7015 ipr_cmd->hrrq->ioa_is_dead)) { 7016 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 7017 spin_unlock(&ipr_cmd->hrrq->_lock); 7018 return AC_ERR_SYSTEM; 7019 } 7020 7021 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done); 7022 ioarcb = &ipr_cmd->ioarcb; 7023 7024 if (ioa_cfg->sis64) { 7025 regs = &ipr_cmd->i.ata_ioadl.regs; 7026 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb)); 7027 } else 7028 regs = &ioarcb->u.add_data.u.regs; 7029 7030 memset(regs, 0, sizeof(*regs)); 7031 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs)); 7032 7033 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 7034 ipr_cmd->qc = qc; 7035 ipr_cmd->done = ipr_sata_done; 7036 ipr_cmd->ioarcb.res_handle = res->res_handle; 7037 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU; 7038 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 7039 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 7040 ipr_cmd->dma_use_sg = qc->n_elem; 7041 7042 if (ioa_cfg->sis64) 7043 ipr_build_ata_ioadl64(ipr_cmd, qc); 7044 else 7045 ipr_build_ata_ioadl(ipr_cmd, qc); 7046 7047 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 7048 ipr_copy_sata_tf(regs, &qc->tf); 7049 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN); 7050 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res)); 7051 7052 switch (qc->tf.protocol) { 7053 case ATA_PROT_NODATA: 7054 case ATA_PROT_PIO: 7055 break; 7056 7057 case ATA_PROT_DMA: 7058 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 7059 break; 7060 7061 case ATAPI_PROT_PIO: 7062 case ATAPI_PROT_NODATA: 7063 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 7064 break; 7065 7066 case ATAPI_PROT_DMA: 7067 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 7068 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 7069 break; 7070 7071 default: 7072 WARN_ON(1); 7073 spin_unlock(&ipr_cmd->hrrq->_lock); 7074 return AC_ERR_INVALID; 7075 } 7076 7077 ipr_send_command(ipr_cmd); 7078 spin_unlock(&ipr_cmd->hrrq->_lock); 7079 7080 return 0; 7081 } 7082 7083 /** 7084 * ipr_qc_fill_rtf - Read result TF 7085 * @qc: ATA queued command 7086 * 7087 * Return value: 7088 * true 7089 **/ 7090 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc) 7091 { 7092 struct ipr_sata_port *sata_port = qc->ap->private_data; 7093 struct ipr_ioasa_gata *g = &sata_port->ioasa; 7094 struct ata_taskfile *tf = &qc->result_tf; 7095 7096 tf->feature = g->error; 7097 tf->nsect = g->nsect; 7098 tf->lbal = g->lbal; 7099 tf->lbam = g->lbam; 7100 tf->lbah = g->lbah; 7101 tf->device = g->device; 7102 tf->command = g->status; 7103 tf->hob_nsect = g->hob_nsect; 7104 tf->hob_lbal = g->hob_lbal; 7105 tf->hob_lbam = g->hob_lbam; 7106 tf->hob_lbah = g->hob_lbah; 7107 7108 return true; 7109 } 7110 7111 static struct ata_port_operations ipr_sata_ops = { 7112 .phy_reset = ipr_ata_phy_reset, 7113 .hardreset = ipr_sata_reset, 7114 .post_internal_cmd = ipr_ata_post_internal, 7115 .qc_prep = ata_noop_qc_prep, 7116 .qc_defer = ipr_qc_defer, 7117 .qc_issue = ipr_qc_issue, 7118 .qc_fill_rtf = ipr_qc_fill_rtf, 7119 .port_start = ata_sas_port_start, 7120 .port_stop = ata_sas_port_stop 7121 }; 7122 7123 static struct ata_port_info sata_port_info = { 7124 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA | 7125 ATA_FLAG_SAS_HOST, 7126 .pio_mask = ATA_PIO4_ONLY, 7127 .mwdma_mask = ATA_MWDMA2, 7128 .udma_mask = ATA_UDMA6, 7129 .port_ops = &ipr_sata_ops 7130 }; 7131 7132 #ifdef CONFIG_PPC_PSERIES 7133 static const u16 ipr_blocked_processors[] = { 7134 PVR_NORTHSTAR, 7135 PVR_PULSAR, 7136 PVR_POWER4, 7137 PVR_ICESTAR, 7138 PVR_SSTAR, 7139 PVR_POWER4p, 7140 PVR_630, 7141 PVR_630p 7142 }; 7143 7144 /** 7145 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 7146 * @ioa_cfg: ioa cfg struct 7147 * 7148 * Adapters that use Gemstone revision < 3.1 do not work reliably on 7149 * certain pSeries hardware. This function determines if the given 7150 * adapter is in one of these confgurations or not. 7151 * 7152 * Return value: 7153 * 1 if adapter is not supported / 0 if adapter is supported 7154 **/ 7155 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 7156 { 7157 int i; 7158 7159 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) { 7160 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) { 7161 if (pvr_version_is(ipr_blocked_processors[i])) 7162 return 1; 7163 } 7164 } 7165 return 0; 7166 } 7167 #else 7168 #define ipr_invalid_adapter(ioa_cfg) 0 7169 #endif 7170 7171 /** 7172 * ipr_ioa_bringdown_done - IOA bring down completion. 7173 * @ipr_cmd: ipr command struct 7174 * 7175 * This function processes the completion of an adapter bring down. 7176 * It wakes any reset sleepers. 7177 * 7178 * Return value: 7179 * IPR_RC_JOB_RETURN 7180 **/ 7181 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 7182 { 7183 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7184 int i; 7185 7186 ENTER; 7187 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) { 7188 ipr_trace; 7189 spin_unlock_irq(ioa_cfg->host->host_lock); 7190 scsi_unblock_requests(ioa_cfg->host); 7191 spin_lock_irq(ioa_cfg->host->host_lock); 7192 } 7193 7194 ioa_cfg->in_reset_reload = 0; 7195 ioa_cfg->reset_retries = 0; 7196 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 7197 spin_lock(&ioa_cfg->hrrq[i]._lock); 7198 ioa_cfg->hrrq[i].ioa_is_dead = 1; 7199 spin_unlock(&ioa_cfg->hrrq[i]._lock); 7200 } 7201 wmb(); 7202 7203 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 7204 wake_up_all(&ioa_cfg->reset_wait_q); 7205 LEAVE; 7206 7207 return IPR_RC_JOB_RETURN; 7208 } 7209 7210 /** 7211 * ipr_ioa_reset_done - IOA reset completion. 7212 * @ipr_cmd: ipr command struct 7213 * 7214 * This function processes the completion of an adapter reset. 7215 * It schedules any necessary mid-layer add/removes and 7216 * wakes any reset sleepers. 7217 * 7218 * Return value: 7219 * IPR_RC_JOB_RETURN 7220 **/ 7221 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 7222 { 7223 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7224 struct ipr_resource_entry *res; 7225 int j; 7226 7227 ENTER; 7228 ioa_cfg->in_reset_reload = 0; 7229 for (j = 0; j < ioa_cfg->hrrq_num; j++) { 7230 spin_lock(&ioa_cfg->hrrq[j]._lock); 7231 ioa_cfg->hrrq[j].allow_cmds = 1; 7232 spin_unlock(&ioa_cfg->hrrq[j]._lock); 7233 } 7234 wmb(); 7235 ioa_cfg->reset_cmd = NULL; 7236 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 7237 7238 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 7239 if (res->add_to_ml || res->del_from_ml) { 7240 ipr_trace; 7241 break; 7242 } 7243 } 7244 schedule_work(&ioa_cfg->work_q); 7245 7246 for (j = 0; j < IPR_NUM_HCAMS; j++) { 7247 list_del_init(&ioa_cfg->hostrcb[j]->queue); 7248 if (j < IPR_NUM_LOG_HCAMS) 7249 ipr_send_hcam(ioa_cfg, 7250 IPR_HCAM_CDB_OP_CODE_LOG_DATA, 7251 ioa_cfg->hostrcb[j]); 7252 else 7253 ipr_send_hcam(ioa_cfg, 7254 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 7255 ioa_cfg->hostrcb[j]); 7256 } 7257 7258 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS); 7259 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 7260 7261 ioa_cfg->reset_retries = 0; 7262 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 7263 wake_up_all(&ioa_cfg->reset_wait_q); 7264 7265 spin_unlock(ioa_cfg->host->host_lock); 7266 scsi_unblock_requests(ioa_cfg->host); 7267 spin_lock(ioa_cfg->host->host_lock); 7268 7269 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) 7270 scsi_block_requests(ioa_cfg->host); 7271 7272 schedule_work(&ioa_cfg->work_q); 7273 LEAVE; 7274 return IPR_RC_JOB_RETURN; 7275 } 7276 7277 /** 7278 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 7279 * @supported_dev: supported device struct 7280 * @vpids: vendor product id struct 7281 * 7282 * Return value: 7283 * none 7284 **/ 7285 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 7286 struct ipr_std_inq_vpids *vpids) 7287 { 7288 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 7289 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 7290 supported_dev->num_records = 1; 7291 supported_dev->data_length = 7292 cpu_to_be16(sizeof(struct ipr_supported_device)); 7293 supported_dev->reserved = 0; 7294 } 7295 7296 /** 7297 * ipr_set_supported_devs - Send Set Supported Devices for a device 7298 * @ipr_cmd: ipr command struct 7299 * 7300 * This function sends a Set Supported Devices to the adapter 7301 * 7302 * Return value: 7303 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7304 **/ 7305 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 7306 { 7307 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7308 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 7309 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7310 struct ipr_resource_entry *res = ipr_cmd->u.res; 7311 7312 ipr_cmd->job_step = ipr_ioa_reset_done; 7313 7314 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 7315 if (!ipr_is_scsi_disk(res)) 7316 continue; 7317 7318 ipr_cmd->u.res = res; 7319 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids); 7320 7321 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7322 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 7323 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7324 7325 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 7326 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES; 7327 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 7328 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 7329 7330 ipr_init_ioadl(ipr_cmd, 7331 ioa_cfg->vpd_cbs_dma + 7332 offsetof(struct ipr_misc_cbs, supp_dev), 7333 sizeof(struct ipr_supported_device), 7334 IPR_IOADL_FLAGS_WRITE_LAST); 7335 7336 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 7337 IPR_SET_SUP_DEVICE_TIMEOUT); 7338 7339 if (!ioa_cfg->sis64) 7340 ipr_cmd->job_step = ipr_set_supported_devs; 7341 LEAVE; 7342 return IPR_RC_JOB_RETURN; 7343 } 7344 7345 LEAVE; 7346 return IPR_RC_JOB_CONTINUE; 7347 } 7348 7349 /** 7350 * ipr_get_mode_page - Locate specified mode page 7351 * @mode_pages: mode page buffer 7352 * @page_code: page code to find 7353 * @len: minimum required length for mode page 7354 * 7355 * Return value: 7356 * pointer to mode page / NULL on failure 7357 **/ 7358 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 7359 u32 page_code, u32 len) 7360 { 7361 struct ipr_mode_page_hdr *mode_hdr; 7362 u32 page_length; 7363 u32 length; 7364 7365 if (!mode_pages || (mode_pages->hdr.length == 0)) 7366 return NULL; 7367 7368 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 7369 mode_hdr = (struct ipr_mode_page_hdr *) 7370 (mode_pages->data + mode_pages->hdr.block_desc_len); 7371 7372 while (length) { 7373 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 7374 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 7375 return mode_hdr; 7376 break; 7377 } else { 7378 page_length = (sizeof(struct ipr_mode_page_hdr) + 7379 mode_hdr->page_length); 7380 length -= page_length; 7381 mode_hdr = (struct ipr_mode_page_hdr *) 7382 ((unsigned long)mode_hdr + page_length); 7383 } 7384 } 7385 return NULL; 7386 } 7387 7388 /** 7389 * ipr_check_term_power - Check for term power errors 7390 * @ioa_cfg: ioa config struct 7391 * @mode_pages: IOAFP mode pages buffer 7392 * 7393 * Check the IOAFP's mode page 28 for term power errors 7394 * 7395 * Return value: 7396 * nothing 7397 **/ 7398 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 7399 struct ipr_mode_pages *mode_pages) 7400 { 7401 int i; 7402 int entry_length; 7403 struct ipr_dev_bus_entry *bus; 7404 struct ipr_mode_page28 *mode_page; 7405 7406 mode_page = ipr_get_mode_page(mode_pages, 0x28, 7407 sizeof(struct ipr_mode_page28)); 7408 7409 entry_length = mode_page->entry_length; 7410 7411 bus = mode_page->bus; 7412 7413 for (i = 0; i < mode_page->num_entries; i++) { 7414 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 7415 dev_err(&ioa_cfg->pdev->dev, 7416 "Term power is absent on scsi bus %d\n", 7417 bus->res_addr.bus); 7418 } 7419 7420 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 7421 } 7422 } 7423 7424 /** 7425 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 7426 * @ioa_cfg: ioa config struct 7427 * 7428 * Looks through the config table checking for SES devices. If 7429 * the SES device is in the SES table indicating a maximum SCSI 7430 * bus speed, the speed is limited for the bus. 7431 * 7432 * Return value: 7433 * none 7434 **/ 7435 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 7436 { 7437 u32 max_xfer_rate; 7438 int i; 7439 7440 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 7441 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 7442 ioa_cfg->bus_attr[i].bus_width); 7443 7444 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 7445 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 7446 } 7447 } 7448 7449 /** 7450 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 7451 * @ioa_cfg: ioa config struct 7452 * @mode_pages: mode page 28 buffer 7453 * 7454 * Updates mode page 28 based on driver configuration 7455 * 7456 * Return value: 7457 * none 7458 **/ 7459 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 7460 struct ipr_mode_pages *mode_pages) 7461 { 7462 int i, entry_length; 7463 struct ipr_dev_bus_entry *bus; 7464 struct ipr_bus_attributes *bus_attr; 7465 struct ipr_mode_page28 *mode_page; 7466 7467 mode_page = ipr_get_mode_page(mode_pages, 0x28, 7468 sizeof(struct ipr_mode_page28)); 7469 7470 entry_length = mode_page->entry_length; 7471 7472 /* Loop for each device bus entry */ 7473 for (i = 0, bus = mode_page->bus; 7474 i < mode_page->num_entries; 7475 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 7476 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 7477 dev_err(&ioa_cfg->pdev->dev, 7478 "Invalid resource address reported: 0x%08X\n", 7479 IPR_GET_PHYS_LOC(bus->res_addr)); 7480 continue; 7481 } 7482 7483 bus_attr = &ioa_cfg->bus_attr[i]; 7484 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 7485 bus->bus_width = bus_attr->bus_width; 7486 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 7487 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 7488 if (bus_attr->qas_enabled) 7489 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 7490 else 7491 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 7492 } 7493 } 7494 7495 /** 7496 * ipr_build_mode_select - Build a mode select command 7497 * @ipr_cmd: ipr command struct 7498 * @res_handle: resource handle to send command to 7499 * @parm: Byte 2 of Mode Sense command 7500 * @dma_addr: DMA buffer address 7501 * @xfer_len: data transfer length 7502 * 7503 * Return value: 7504 * none 7505 **/ 7506 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 7507 __be32 res_handle, u8 parm, 7508 dma_addr_t dma_addr, u8 xfer_len) 7509 { 7510 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7511 7512 ioarcb->res_handle = res_handle; 7513 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 7514 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 7515 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 7516 ioarcb->cmd_pkt.cdb[1] = parm; 7517 ioarcb->cmd_pkt.cdb[4] = xfer_len; 7518 7519 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST); 7520 } 7521 7522 /** 7523 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 7524 * @ipr_cmd: ipr command struct 7525 * 7526 * This function sets up the SCSI bus attributes and sends 7527 * a Mode Select for Page 28 to activate them. 7528 * 7529 * Return value: 7530 * IPR_RC_JOB_RETURN 7531 **/ 7532 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 7533 { 7534 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7535 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 7536 int length; 7537 7538 ENTER; 7539 ipr_scsi_bus_speed_limit(ioa_cfg); 7540 ipr_check_term_power(ioa_cfg, mode_pages); 7541 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 7542 length = mode_pages->hdr.length + 1; 7543 mode_pages->hdr.length = 0; 7544 7545 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 7546 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 7547 length); 7548 7549 ipr_cmd->job_step = ipr_set_supported_devs; 7550 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 7551 struct ipr_resource_entry, queue); 7552 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7553 7554 LEAVE; 7555 return IPR_RC_JOB_RETURN; 7556 } 7557 7558 /** 7559 * ipr_build_mode_sense - Builds a mode sense command 7560 * @ipr_cmd: ipr command struct 7561 * @res: resource entry struct 7562 * @parm: Byte 2 of mode sense command 7563 * @dma_addr: DMA address of mode sense buffer 7564 * @xfer_len: Size of DMA buffer 7565 * 7566 * Return value: 7567 * none 7568 **/ 7569 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 7570 __be32 res_handle, 7571 u8 parm, dma_addr_t dma_addr, u8 xfer_len) 7572 { 7573 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7574 7575 ioarcb->res_handle = res_handle; 7576 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 7577 ioarcb->cmd_pkt.cdb[2] = parm; 7578 ioarcb->cmd_pkt.cdb[4] = xfer_len; 7579 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 7580 7581 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 7582 } 7583 7584 /** 7585 * ipr_reset_cmd_failed - Handle failure of IOA reset command 7586 * @ipr_cmd: ipr command struct 7587 * 7588 * This function handles the failure of an IOA bringup command. 7589 * 7590 * Return value: 7591 * IPR_RC_JOB_RETURN 7592 **/ 7593 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 7594 { 7595 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7596 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7597 7598 dev_err(&ioa_cfg->pdev->dev, 7599 "0x%02X failed with IOASC: 0x%08X\n", 7600 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 7601 7602 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 7603 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 7604 return IPR_RC_JOB_RETURN; 7605 } 7606 7607 /** 7608 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 7609 * @ipr_cmd: ipr command struct 7610 * 7611 * This function handles the failure of a Mode Sense to the IOAFP. 7612 * Some adapters do not handle all mode pages. 7613 * 7614 * Return value: 7615 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7616 **/ 7617 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 7618 { 7619 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7620 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7621 7622 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 7623 ipr_cmd->job_step = ipr_set_supported_devs; 7624 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 7625 struct ipr_resource_entry, queue); 7626 return IPR_RC_JOB_CONTINUE; 7627 } 7628 7629 return ipr_reset_cmd_failed(ipr_cmd); 7630 } 7631 7632 /** 7633 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 7634 * @ipr_cmd: ipr command struct 7635 * 7636 * This function send a Page 28 mode sense to the IOA to 7637 * retrieve SCSI bus attributes. 7638 * 7639 * Return value: 7640 * IPR_RC_JOB_RETURN 7641 **/ 7642 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 7643 { 7644 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7645 7646 ENTER; 7647 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 7648 0x28, ioa_cfg->vpd_cbs_dma + 7649 offsetof(struct ipr_misc_cbs, mode_pages), 7650 sizeof(struct ipr_mode_pages)); 7651 7652 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 7653 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 7654 7655 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7656 7657 LEAVE; 7658 return IPR_RC_JOB_RETURN; 7659 } 7660 7661 /** 7662 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA 7663 * @ipr_cmd: ipr command struct 7664 * 7665 * This function enables dual IOA RAID support if possible. 7666 * 7667 * Return value: 7668 * IPR_RC_JOB_RETURN 7669 **/ 7670 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd) 7671 { 7672 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7673 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 7674 struct ipr_mode_page24 *mode_page; 7675 int length; 7676 7677 ENTER; 7678 mode_page = ipr_get_mode_page(mode_pages, 0x24, 7679 sizeof(struct ipr_mode_page24)); 7680 7681 if (mode_page) 7682 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF; 7683 7684 length = mode_pages->hdr.length + 1; 7685 mode_pages->hdr.length = 0; 7686 7687 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 7688 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 7689 length); 7690 7691 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 7692 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7693 7694 LEAVE; 7695 return IPR_RC_JOB_RETURN; 7696 } 7697 7698 /** 7699 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense 7700 * @ipr_cmd: ipr command struct 7701 * 7702 * This function handles the failure of a Mode Sense to the IOAFP. 7703 * Some adapters do not handle all mode pages. 7704 * 7705 * Return value: 7706 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7707 **/ 7708 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd) 7709 { 7710 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7711 7712 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 7713 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 7714 return IPR_RC_JOB_CONTINUE; 7715 } 7716 7717 return ipr_reset_cmd_failed(ipr_cmd); 7718 } 7719 7720 /** 7721 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA 7722 * @ipr_cmd: ipr command struct 7723 * 7724 * This function send a mode sense to the IOA to retrieve 7725 * the IOA Advanced Function Control mode page. 7726 * 7727 * Return value: 7728 * IPR_RC_JOB_RETURN 7729 **/ 7730 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd) 7731 { 7732 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7733 7734 ENTER; 7735 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 7736 0x24, ioa_cfg->vpd_cbs_dma + 7737 offsetof(struct ipr_misc_cbs, mode_pages), 7738 sizeof(struct ipr_mode_pages)); 7739 7740 ipr_cmd->job_step = ipr_ioafp_mode_select_page24; 7741 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed; 7742 7743 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7744 7745 LEAVE; 7746 return IPR_RC_JOB_RETURN; 7747 } 7748 7749 /** 7750 * ipr_init_res_table - Initialize the resource table 7751 * @ipr_cmd: ipr command struct 7752 * 7753 * This function looks through the existing resource table, comparing 7754 * it with the config table. This function will take care of old/new 7755 * devices and schedule adding/removing them from the mid-layer 7756 * as appropriate. 7757 * 7758 * Return value: 7759 * IPR_RC_JOB_CONTINUE 7760 **/ 7761 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 7762 { 7763 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7764 struct ipr_resource_entry *res, *temp; 7765 struct ipr_config_table_entry_wrapper cfgtew; 7766 int entries, found, flag, i; 7767 LIST_HEAD(old_res); 7768 7769 ENTER; 7770 if (ioa_cfg->sis64) 7771 flag = ioa_cfg->u.cfg_table64->hdr64.flags; 7772 else 7773 flag = ioa_cfg->u.cfg_table->hdr.flags; 7774 7775 if (flag & IPR_UCODE_DOWNLOAD_REQ) 7776 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 7777 7778 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 7779 list_move_tail(&res->queue, &old_res); 7780 7781 if (ioa_cfg->sis64) 7782 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries); 7783 else 7784 entries = ioa_cfg->u.cfg_table->hdr.num_entries; 7785 7786 for (i = 0; i < entries; i++) { 7787 if (ioa_cfg->sis64) 7788 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i]; 7789 else 7790 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i]; 7791 found = 0; 7792 7793 list_for_each_entry_safe(res, temp, &old_res, queue) { 7794 if (ipr_is_same_device(res, &cfgtew)) { 7795 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7796 found = 1; 7797 break; 7798 } 7799 } 7800 7801 if (!found) { 7802 if (list_empty(&ioa_cfg->free_res_q)) { 7803 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 7804 break; 7805 } 7806 7807 found = 1; 7808 res = list_entry(ioa_cfg->free_res_q.next, 7809 struct ipr_resource_entry, queue); 7810 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7811 ipr_init_res_entry(res, &cfgtew); 7812 res->add_to_ml = 1; 7813 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))) 7814 res->sdev->allow_restart = 1; 7815 7816 if (found) 7817 ipr_update_res_entry(res, &cfgtew); 7818 } 7819 7820 list_for_each_entry_safe(res, temp, &old_res, queue) { 7821 if (res->sdev) { 7822 res->del_from_ml = 1; 7823 res->res_handle = IPR_INVALID_RES_HANDLE; 7824 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7825 } 7826 } 7827 7828 list_for_each_entry_safe(res, temp, &old_res, queue) { 7829 ipr_clear_res_target(res); 7830 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 7831 } 7832 7833 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 7834 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24; 7835 else 7836 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 7837 7838 LEAVE; 7839 return IPR_RC_JOB_CONTINUE; 7840 } 7841 7842 /** 7843 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 7844 * @ipr_cmd: ipr command struct 7845 * 7846 * This function sends a Query IOA Configuration command 7847 * to the adapter to retrieve the IOA configuration table. 7848 * 7849 * Return value: 7850 * IPR_RC_JOB_RETURN 7851 **/ 7852 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 7853 { 7854 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7855 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7856 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 7857 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 7858 7859 ENTER; 7860 if (cap->cap & IPR_CAP_DUAL_IOA_RAID) 7861 ioa_cfg->dual_raid = 1; 7862 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 7863 ucode_vpd->major_release, ucode_vpd->card_type, 7864 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 7865 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7866 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7867 7868 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 7869 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff; 7870 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff; 7871 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff; 7872 7873 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size, 7874 IPR_IOADL_FLAGS_READ_LAST); 7875 7876 ipr_cmd->job_step = ipr_init_res_table; 7877 7878 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7879 7880 LEAVE; 7881 return IPR_RC_JOB_RETURN; 7882 } 7883 7884 static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd) 7885 { 7886 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7887 7888 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) 7889 return IPR_RC_JOB_CONTINUE; 7890 7891 return ipr_reset_cmd_failed(ipr_cmd); 7892 } 7893 7894 static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd, 7895 __be32 res_handle, u8 sa_code) 7896 { 7897 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7898 7899 ioarcb->res_handle = res_handle; 7900 ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION; 7901 ioarcb->cmd_pkt.cdb[1] = sa_code; 7902 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7903 } 7904 7905 /** 7906 * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service 7907 * action 7908 * 7909 * Return value: 7910 * none 7911 **/ 7912 static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd) 7913 { 7914 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7915 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7916 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data; 7917 7918 ENTER; 7919 7920 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 7921 7922 if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) { 7923 ipr_build_ioa_service_action(ipr_cmd, 7924 cpu_to_be32(IPR_IOA_RES_HANDLE), 7925 IPR_IOA_SA_CHANGE_CACHE_PARAMS); 7926 7927 ioarcb->cmd_pkt.cdb[2] = 0x40; 7928 7929 ipr_cmd->job_step_failed = ipr_ioa_service_action_failed; 7930 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 7931 IPR_SET_SUP_DEVICE_TIMEOUT); 7932 7933 LEAVE; 7934 return IPR_RC_JOB_RETURN; 7935 } 7936 7937 LEAVE; 7938 return IPR_RC_JOB_CONTINUE; 7939 } 7940 7941 /** 7942 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 7943 * @ipr_cmd: ipr command struct 7944 * 7945 * This utility function sends an inquiry to the adapter. 7946 * 7947 * Return value: 7948 * none 7949 **/ 7950 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 7951 dma_addr_t dma_addr, u8 xfer_len) 7952 { 7953 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7954 7955 ENTER; 7956 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 7957 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7958 7959 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 7960 ioarcb->cmd_pkt.cdb[1] = flags; 7961 ioarcb->cmd_pkt.cdb[2] = page; 7962 ioarcb->cmd_pkt.cdb[4] = xfer_len; 7963 7964 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 7965 7966 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7967 LEAVE; 7968 } 7969 7970 /** 7971 * ipr_inquiry_page_supported - Is the given inquiry page supported 7972 * @page0: inquiry page 0 buffer 7973 * @page: page code. 7974 * 7975 * This function determines if the specified inquiry page is supported. 7976 * 7977 * Return value: 7978 * 1 if page is supported / 0 if not 7979 **/ 7980 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 7981 { 7982 int i; 7983 7984 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 7985 if (page0->page[i] == page) 7986 return 1; 7987 7988 return 0; 7989 } 7990 7991 /** 7992 * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter. 7993 * @ipr_cmd: ipr command struct 7994 * 7995 * This function sends a Page 0xC4 inquiry to the adapter 7996 * to retrieve software VPD information. 7997 * 7998 * Return value: 7999 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8000 **/ 8001 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd) 8002 { 8003 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8004 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 8005 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data; 8006 8007 ENTER; 8008 ipr_cmd->job_step = ipr_ioafp_set_caching_parameters; 8009 memset(pageC4, 0, sizeof(*pageC4)); 8010 8011 if (ipr_inquiry_page_supported(page0, 0xC4)) { 8012 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4, 8013 (ioa_cfg->vpd_cbs_dma 8014 + offsetof(struct ipr_misc_cbs, 8015 pageC4_data)), 8016 sizeof(struct ipr_inquiry_pageC4)); 8017 return IPR_RC_JOB_RETURN; 8018 } 8019 8020 LEAVE; 8021 return IPR_RC_JOB_CONTINUE; 8022 } 8023 8024 /** 8025 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter. 8026 * @ipr_cmd: ipr command struct 8027 * 8028 * This function sends a Page 0xD0 inquiry to the adapter 8029 * to retrieve adapter capabilities. 8030 * 8031 * Return value: 8032 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8033 **/ 8034 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd) 8035 { 8036 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8037 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 8038 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 8039 8040 ENTER; 8041 ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry; 8042 memset(cap, 0, sizeof(*cap)); 8043 8044 if (ipr_inquiry_page_supported(page0, 0xD0)) { 8045 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0, 8046 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap), 8047 sizeof(struct ipr_inquiry_cap)); 8048 return IPR_RC_JOB_RETURN; 8049 } 8050 8051 LEAVE; 8052 return IPR_RC_JOB_CONTINUE; 8053 } 8054 8055 /** 8056 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 8057 * @ipr_cmd: ipr command struct 8058 * 8059 * This function sends a Page 3 inquiry to the adapter 8060 * to retrieve software VPD information. 8061 * 8062 * Return value: 8063 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8064 **/ 8065 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 8066 { 8067 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8068 8069 ENTER; 8070 8071 ipr_cmd->job_step = ipr_ioafp_cap_inquiry; 8072 8073 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 8074 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 8075 sizeof(struct ipr_inquiry_page3)); 8076 8077 LEAVE; 8078 return IPR_RC_JOB_RETURN; 8079 } 8080 8081 /** 8082 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 8083 * @ipr_cmd: ipr command struct 8084 * 8085 * This function sends a Page 0 inquiry to the adapter 8086 * to retrieve supported inquiry pages. 8087 * 8088 * Return value: 8089 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8090 **/ 8091 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 8092 { 8093 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8094 char type[5]; 8095 8096 ENTER; 8097 8098 /* Grab the type out of the VPD and store it away */ 8099 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 8100 type[4] = '\0'; 8101 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 8102 8103 if (ipr_invalid_adapter(ioa_cfg)) { 8104 dev_err(&ioa_cfg->pdev->dev, 8105 "Adapter not supported in this hardware configuration.\n"); 8106 8107 if (!ipr_testmode) { 8108 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 8109 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8110 list_add_tail(&ipr_cmd->queue, 8111 &ioa_cfg->hrrq->hrrq_free_q); 8112 return IPR_RC_JOB_RETURN; 8113 } 8114 } 8115 8116 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 8117 8118 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 8119 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 8120 sizeof(struct ipr_inquiry_page0)); 8121 8122 LEAVE; 8123 return IPR_RC_JOB_RETURN; 8124 } 8125 8126 /** 8127 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 8128 * @ipr_cmd: ipr command struct 8129 * 8130 * This function sends a standard inquiry to the adapter. 8131 * 8132 * Return value: 8133 * IPR_RC_JOB_RETURN 8134 **/ 8135 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 8136 { 8137 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8138 8139 ENTER; 8140 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 8141 8142 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 8143 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 8144 sizeof(struct ipr_ioa_vpd)); 8145 8146 LEAVE; 8147 return IPR_RC_JOB_RETURN; 8148 } 8149 8150 /** 8151 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ. 8152 * @ipr_cmd: ipr command struct 8153 * 8154 * This function send an Identify Host Request Response Queue 8155 * command to establish the HRRQ with the adapter. 8156 * 8157 * Return value: 8158 * IPR_RC_JOB_RETURN 8159 **/ 8160 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd) 8161 { 8162 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8163 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 8164 struct ipr_hrr_queue *hrrq; 8165 8166 ENTER; 8167 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 8168 if (ioa_cfg->identify_hrrq_index == 0) 8169 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 8170 8171 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) { 8172 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index]; 8173 8174 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 8175 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 8176 8177 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 8178 if (ioa_cfg->sis64) 8179 ioarcb->cmd_pkt.cdb[1] = 0x1; 8180 8181 if (ioa_cfg->nvectors == 1) 8182 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE; 8183 else 8184 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE; 8185 8186 ioarcb->cmd_pkt.cdb[2] = 8187 ((u64) hrrq->host_rrq_dma >> 24) & 0xff; 8188 ioarcb->cmd_pkt.cdb[3] = 8189 ((u64) hrrq->host_rrq_dma >> 16) & 0xff; 8190 ioarcb->cmd_pkt.cdb[4] = 8191 ((u64) hrrq->host_rrq_dma >> 8) & 0xff; 8192 ioarcb->cmd_pkt.cdb[5] = 8193 ((u64) hrrq->host_rrq_dma) & 0xff; 8194 ioarcb->cmd_pkt.cdb[7] = 8195 ((sizeof(u32) * hrrq->size) >> 8) & 0xff; 8196 ioarcb->cmd_pkt.cdb[8] = 8197 (sizeof(u32) * hrrq->size) & 0xff; 8198 8199 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE) 8200 ioarcb->cmd_pkt.cdb[9] = 8201 ioa_cfg->identify_hrrq_index; 8202 8203 if (ioa_cfg->sis64) { 8204 ioarcb->cmd_pkt.cdb[10] = 8205 ((u64) hrrq->host_rrq_dma >> 56) & 0xff; 8206 ioarcb->cmd_pkt.cdb[11] = 8207 ((u64) hrrq->host_rrq_dma >> 48) & 0xff; 8208 ioarcb->cmd_pkt.cdb[12] = 8209 ((u64) hrrq->host_rrq_dma >> 40) & 0xff; 8210 ioarcb->cmd_pkt.cdb[13] = 8211 ((u64) hrrq->host_rrq_dma >> 32) & 0xff; 8212 } 8213 8214 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE) 8215 ioarcb->cmd_pkt.cdb[14] = 8216 ioa_cfg->identify_hrrq_index; 8217 8218 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 8219 IPR_INTERNAL_TIMEOUT); 8220 8221 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) 8222 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 8223 8224 LEAVE; 8225 return IPR_RC_JOB_RETURN; 8226 } 8227 8228 LEAVE; 8229 return IPR_RC_JOB_CONTINUE; 8230 } 8231 8232 /** 8233 * ipr_reset_timer_done - Adapter reset timer function 8234 * @ipr_cmd: ipr command struct 8235 * 8236 * Description: This function is used in adapter reset processing 8237 * for timing events. If the reset_cmd pointer in the IOA 8238 * config struct is not this adapter's we are doing nested 8239 * resets and fail_all_ops will take care of freeing the 8240 * command block. 8241 * 8242 * Return value: 8243 * none 8244 **/ 8245 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 8246 { 8247 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8248 unsigned long lock_flags = 0; 8249 8250 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8251 8252 if (ioa_cfg->reset_cmd == ipr_cmd) { 8253 list_del(&ipr_cmd->queue); 8254 ipr_cmd->done(ipr_cmd); 8255 } 8256 8257 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8258 } 8259 8260 /** 8261 * ipr_reset_start_timer - Start a timer for adapter reset job 8262 * @ipr_cmd: ipr command struct 8263 * @timeout: timeout value 8264 * 8265 * Description: This function is used in adapter reset processing 8266 * for timing events. If the reset_cmd pointer in the IOA 8267 * config struct is not this adapter's we are doing nested 8268 * resets and fail_all_ops will take care of freeing the 8269 * command block. 8270 * 8271 * Return value: 8272 * none 8273 **/ 8274 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 8275 unsigned long timeout) 8276 { 8277 8278 ENTER; 8279 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 8280 ipr_cmd->done = ipr_reset_ioa_job; 8281 8282 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 8283 ipr_cmd->timer.expires = jiffies + timeout; 8284 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 8285 add_timer(&ipr_cmd->timer); 8286 } 8287 8288 /** 8289 * ipr_init_ioa_mem - Initialize ioa_cfg control block 8290 * @ioa_cfg: ioa cfg struct 8291 * 8292 * Return value: 8293 * nothing 8294 **/ 8295 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 8296 { 8297 struct ipr_hrr_queue *hrrq; 8298 8299 for_each_hrrq(hrrq, ioa_cfg) { 8300 spin_lock(&hrrq->_lock); 8301 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size); 8302 8303 /* Initialize Host RRQ pointers */ 8304 hrrq->hrrq_start = hrrq->host_rrq; 8305 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1]; 8306 hrrq->hrrq_curr = hrrq->hrrq_start; 8307 hrrq->toggle_bit = 1; 8308 spin_unlock(&hrrq->_lock); 8309 } 8310 wmb(); 8311 8312 ioa_cfg->identify_hrrq_index = 0; 8313 if (ioa_cfg->hrrq_num == 1) 8314 atomic_set(&ioa_cfg->hrrq_index, 0); 8315 else 8316 atomic_set(&ioa_cfg->hrrq_index, 1); 8317 8318 /* Zero out config table */ 8319 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size); 8320 } 8321 8322 /** 8323 * ipr_reset_next_stage - Process IPL stage change based on feedback register. 8324 * @ipr_cmd: ipr command struct 8325 * 8326 * Return value: 8327 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8328 **/ 8329 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd) 8330 { 8331 unsigned long stage, stage_time; 8332 u32 feedback; 8333 volatile u32 int_reg; 8334 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8335 u64 maskval = 0; 8336 8337 feedback = readl(ioa_cfg->regs.init_feedback_reg); 8338 stage = feedback & IPR_IPL_INIT_STAGE_MASK; 8339 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK; 8340 8341 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time); 8342 8343 /* sanity check the stage_time value */ 8344 if (stage_time == 0) 8345 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME; 8346 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME) 8347 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME; 8348 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT) 8349 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT; 8350 8351 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) { 8352 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg); 8353 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8354 stage_time = ioa_cfg->transop_timeout; 8355 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 8356 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) { 8357 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 8358 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 8359 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 8360 maskval = IPR_PCII_IPL_STAGE_CHANGE; 8361 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER; 8362 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg); 8363 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8364 return IPR_RC_JOB_CONTINUE; 8365 } 8366 } 8367 8368 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 8369 ipr_cmd->timer.expires = jiffies + stage_time * HZ; 8370 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 8371 ipr_cmd->done = ipr_reset_ioa_job; 8372 add_timer(&ipr_cmd->timer); 8373 8374 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 8375 8376 return IPR_RC_JOB_RETURN; 8377 } 8378 8379 /** 8380 * ipr_reset_enable_ioa - Enable the IOA following a reset. 8381 * @ipr_cmd: ipr command struct 8382 * 8383 * This function reinitializes some control blocks and 8384 * enables destructive diagnostics on the adapter. 8385 * 8386 * Return value: 8387 * IPR_RC_JOB_RETURN 8388 **/ 8389 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 8390 { 8391 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8392 volatile u32 int_reg; 8393 volatile u64 maskval; 8394 int i; 8395 8396 ENTER; 8397 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 8398 ipr_init_ioa_mem(ioa_cfg); 8399 8400 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 8401 spin_lock(&ioa_cfg->hrrq[i]._lock); 8402 ioa_cfg->hrrq[i].allow_interrupts = 1; 8403 spin_unlock(&ioa_cfg->hrrq[i]._lock); 8404 } 8405 wmb(); 8406 if (ioa_cfg->sis64) { 8407 /* Set the adapter to the correct endian mode. */ 8408 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg); 8409 int_reg = readl(ioa_cfg->regs.endian_swap_reg); 8410 } 8411 8412 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 8413 8414 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 8415 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 8416 ioa_cfg->regs.clr_interrupt_mask_reg32); 8417 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8418 return IPR_RC_JOB_CONTINUE; 8419 } 8420 8421 /* Enable destructive diagnostics on IOA */ 8422 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32); 8423 8424 if (ioa_cfg->sis64) { 8425 maskval = IPR_PCII_IPL_STAGE_CHANGE; 8426 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS; 8427 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg); 8428 } else 8429 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32); 8430 8431 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8432 8433 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 8434 8435 if (ioa_cfg->sis64) { 8436 ipr_cmd->job_step = ipr_reset_next_stage; 8437 return IPR_RC_JOB_CONTINUE; 8438 } 8439 8440 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 8441 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ); 8442 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 8443 ipr_cmd->done = ipr_reset_ioa_job; 8444 add_timer(&ipr_cmd->timer); 8445 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 8446 8447 LEAVE; 8448 return IPR_RC_JOB_RETURN; 8449 } 8450 8451 /** 8452 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 8453 * @ipr_cmd: ipr command struct 8454 * 8455 * This function is invoked when an adapter dump has run out 8456 * of processing time. 8457 * 8458 * Return value: 8459 * IPR_RC_JOB_CONTINUE 8460 **/ 8461 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 8462 { 8463 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8464 8465 if (ioa_cfg->sdt_state == GET_DUMP) 8466 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 8467 else if (ioa_cfg->sdt_state == READ_DUMP) 8468 ioa_cfg->sdt_state = ABORT_DUMP; 8469 8470 ioa_cfg->dump_timeout = 1; 8471 ipr_cmd->job_step = ipr_reset_alert; 8472 8473 return IPR_RC_JOB_CONTINUE; 8474 } 8475 8476 /** 8477 * ipr_unit_check_no_data - Log a unit check/no data error log 8478 * @ioa_cfg: ioa config struct 8479 * 8480 * Logs an error indicating the adapter unit checked, but for some 8481 * reason, we were unable to fetch the unit check buffer. 8482 * 8483 * Return value: 8484 * nothing 8485 **/ 8486 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 8487 { 8488 ioa_cfg->errors_logged++; 8489 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 8490 } 8491 8492 /** 8493 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 8494 * @ioa_cfg: ioa config struct 8495 * 8496 * Fetches the unit check buffer from the adapter by clocking the data 8497 * through the mailbox register. 8498 * 8499 * Return value: 8500 * nothing 8501 **/ 8502 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 8503 { 8504 unsigned long mailbox; 8505 struct ipr_hostrcb *hostrcb; 8506 struct ipr_uc_sdt sdt; 8507 int rc, length; 8508 u32 ioasc; 8509 8510 mailbox = readl(ioa_cfg->ioa_mailbox); 8511 8512 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) { 8513 ipr_unit_check_no_data(ioa_cfg); 8514 return; 8515 } 8516 8517 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 8518 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 8519 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 8520 8521 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) || 8522 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) && 8523 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) { 8524 ipr_unit_check_no_data(ioa_cfg); 8525 return; 8526 } 8527 8528 /* Find length of the first sdt entry (UC buffer) */ 8529 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE) 8530 length = be32_to_cpu(sdt.entry[0].end_token); 8531 else 8532 length = (be32_to_cpu(sdt.entry[0].end_token) - 8533 be32_to_cpu(sdt.entry[0].start_token)) & 8534 IPR_FMT2_MBX_ADDR_MASK; 8535 8536 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 8537 struct ipr_hostrcb, queue); 8538 list_del_init(&hostrcb->queue); 8539 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 8540 8541 rc = ipr_get_ldump_data_section(ioa_cfg, 8542 be32_to_cpu(sdt.entry[0].start_token), 8543 (__be32 *)&hostrcb->hcam, 8544 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 8545 8546 if (!rc) { 8547 ipr_handle_log_data(ioa_cfg, hostrcb); 8548 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 8549 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED && 8550 ioa_cfg->sdt_state == GET_DUMP) 8551 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 8552 } else 8553 ipr_unit_check_no_data(ioa_cfg); 8554 8555 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 8556 } 8557 8558 /** 8559 * ipr_reset_get_unit_check_job - Call to get the unit check buffer. 8560 * @ipr_cmd: ipr command struct 8561 * 8562 * Description: This function will call to get the unit check buffer. 8563 * 8564 * Return value: 8565 * IPR_RC_JOB_RETURN 8566 **/ 8567 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd) 8568 { 8569 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8570 8571 ENTER; 8572 ioa_cfg->ioa_unit_checked = 0; 8573 ipr_get_unit_check_buffer(ioa_cfg); 8574 ipr_cmd->job_step = ipr_reset_alert; 8575 ipr_reset_start_timer(ipr_cmd, 0); 8576 8577 LEAVE; 8578 return IPR_RC_JOB_RETURN; 8579 } 8580 8581 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd) 8582 { 8583 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8584 8585 ENTER; 8586 8587 if (ioa_cfg->sdt_state != GET_DUMP) 8588 return IPR_RC_JOB_RETURN; 8589 8590 if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left || 8591 (readl(ioa_cfg->regs.sense_interrupt_reg) & 8592 IPR_PCII_MAILBOX_STABLE)) { 8593 8594 if (!ipr_cmd->u.time_left) 8595 dev_err(&ioa_cfg->pdev->dev, 8596 "Timed out waiting for Mailbox register.\n"); 8597 8598 ioa_cfg->sdt_state = READ_DUMP; 8599 ioa_cfg->dump_timeout = 0; 8600 if (ioa_cfg->sis64) 8601 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT); 8602 else 8603 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT); 8604 ipr_cmd->job_step = ipr_reset_wait_for_dump; 8605 schedule_work(&ioa_cfg->work_q); 8606 8607 } else { 8608 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 8609 ipr_reset_start_timer(ipr_cmd, 8610 IPR_CHECK_FOR_RESET_TIMEOUT); 8611 } 8612 8613 LEAVE; 8614 return IPR_RC_JOB_RETURN; 8615 } 8616 8617 /** 8618 * ipr_reset_restore_cfg_space - Restore PCI config space. 8619 * @ipr_cmd: ipr command struct 8620 * 8621 * Description: This function restores the saved PCI config space of 8622 * the adapter, fails all outstanding ops back to the callers, and 8623 * fetches the dump/unit check if applicable to this reset. 8624 * 8625 * Return value: 8626 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8627 **/ 8628 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 8629 { 8630 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8631 u32 int_reg; 8632 8633 ENTER; 8634 ioa_cfg->pdev->state_saved = true; 8635 pci_restore_state(ioa_cfg->pdev); 8636 8637 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 8638 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 8639 return IPR_RC_JOB_CONTINUE; 8640 } 8641 8642 ipr_fail_all_ops(ioa_cfg); 8643 8644 if (ioa_cfg->sis64) { 8645 /* Set the adapter to the correct endian mode. */ 8646 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg); 8647 int_reg = readl(ioa_cfg->regs.endian_swap_reg); 8648 } 8649 8650 if (ioa_cfg->ioa_unit_checked) { 8651 if (ioa_cfg->sis64) { 8652 ipr_cmd->job_step = ipr_reset_get_unit_check_job; 8653 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT); 8654 return IPR_RC_JOB_RETURN; 8655 } else { 8656 ioa_cfg->ioa_unit_checked = 0; 8657 ipr_get_unit_check_buffer(ioa_cfg); 8658 ipr_cmd->job_step = ipr_reset_alert; 8659 ipr_reset_start_timer(ipr_cmd, 0); 8660 return IPR_RC_JOB_RETURN; 8661 } 8662 } 8663 8664 if (ioa_cfg->in_ioa_bringdown) { 8665 ipr_cmd->job_step = ipr_ioa_bringdown_done; 8666 } else if (ioa_cfg->sdt_state == GET_DUMP) { 8667 ipr_cmd->job_step = ipr_dump_mailbox_wait; 8668 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX; 8669 } else { 8670 ipr_cmd->job_step = ipr_reset_enable_ioa; 8671 } 8672 8673 LEAVE; 8674 return IPR_RC_JOB_CONTINUE; 8675 } 8676 8677 /** 8678 * ipr_reset_bist_done - BIST has completed on the adapter. 8679 * @ipr_cmd: ipr command struct 8680 * 8681 * Description: Unblock config space and resume the reset process. 8682 * 8683 * Return value: 8684 * IPR_RC_JOB_CONTINUE 8685 **/ 8686 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd) 8687 { 8688 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8689 8690 ENTER; 8691 if (ioa_cfg->cfg_locked) 8692 pci_cfg_access_unlock(ioa_cfg->pdev); 8693 ioa_cfg->cfg_locked = 0; 8694 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 8695 LEAVE; 8696 return IPR_RC_JOB_CONTINUE; 8697 } 8698 8699 /** 8700 * ipr_reset_start_bist - Run BIST on the adapter. 8701 * @ipr_cmd: ipr command struct 8702 * 8703 * Description: This function runs BIST on the adapter, then delays 2 seconds. 8704 * 8705 * Return value: 8706 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8707 **/ 8708 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 8709 { 8710 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8711 int rc = PCIBIOS_SUCCESSFUL; 8712 8713 ENTER; 8714 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO) 8715 writel(IPR_UPROCI_SIS64_START_BIST, 8716 ioa_cfg->regs.set_uproc_interrupt_reg32); 8717 else 8718 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 8719 8720 if (rc == PCIBIOS_SUCCESSFUL) { 8721 ipr_cmd->job_step = ipr_reset_bist_done; 8722 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 8723 rc = IPR_RC_JOB_RETURN; 8724 } else { 8725 if (ioa_cfg->cfg_locked) 8726 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev); 8727 ioa_cfg->cfg_locked = 0; 8728 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 8729 rc = IPR_RC_JOB_CONTINUE; 8730 } 8731 8732 LEAVE; 8733 return rc; 8734 } 8735 8736 /** 8737 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter 8738 * @ipr_cmd: ipr command struct 8739 * 8740 * Description: This clears PCI reset to the adapter and delays two seconds. 8741 * 8742 * Return value: 8743 * IPR_RC_JOB_RETURN 8744 **/ 8745 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd) 8746 { 8747 ENTER; 8748 ipr_cmd->job_step = ipr_reset_bist_done; 8749 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 8750 LEAVE; 8751 return IPR_RC_JOB_RETURN; 8752 } 8753 8754 /** 8755 * ipr_reset_reset_work - Pulse a PCIe fundamental reset 8756 * @work: work struct 8757 * 8758 * Description: This pulses warm reset to a slot. 8759 * 8760 **/ 8761 static void ipr_reset_reset_work(struct work_struct *work) 8762 { 8763 struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work); 8764 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8765 struct pci_dev *pdev = ioa_cfg->pdev; 8766 unsigned long lock_flags = 0; 8767 8768 ENTER; 8769 pci_set_pcie_reset_state(pdev, pcie_warm_reset); 8770 msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT)); 8771 pci_set_pcie_reset_state(pdev, pcie_deassert_reset); 8772 8773 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8774 if (ioa_cfg->reset_cmd == ipr_cmd) 8775 ipr_reset_ioa_job(ipr_cmd); 8776 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8777 LEAVE; 8778 } 8779 8780 /** 8781 * ipr_reset_slot_reset - Reset the PCI slot of the adapter. 8782 * @ipr_cmd: ipr command struct 8783 * 8784 * Description: This asserts PCI reset to the adapter. 8785 * 8786 * Return value: 8787 * IPR_RC_JOB_RETURN 8788 **/ 8789 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd) 8790 { 8791 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8792 8793 ENTER; 8794 INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work); 8795 queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work); 8796 ipr_cmd->job_step = ipr_reset_slot_reset_done; 8797 LEAVE; 8798 return IPR_RC_JOB_RETURN; 8799 } 8800 8801 /** 8802 * ipr_reset_block_config_access_wait - Wait for permission to block config access 8803 * @ipr_cmd: ipr command struct 8804 * 8805 * Description: This attempts to block config access to the IOA. 8806 * 8807 * Return value: 8808 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8809 **/ 8810 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd) 8811 { 8812 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8813 int rc = IPR_RC_JOB_CONTINUE; 8814 8815 if (pci_cfg_access_trylock(ioa_cfg->pdev)) { 8816 ioa_cfg->cfg_locked = 1; 8817 ipr_cmd->job_step = ioa_cfg->reset; 8818 } else { 8819 if (ipr_cmd->u.time_left) { 8820 rc = IPR_RC_JOB_RETURN; 8821 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 8822 ipr_reset_start_timer(ipr_cmd, 8823 IPR_CHECK_FOR_RESET_TIMEOUT); 8824 } else { 8825 ipr_cmd->job_step = ioa_cfg->reset; 8826 dev_err(&ioa_cfg->pdev->dev, 8827 "Timed out waiting to lock config access. Resetting anyway.\n"); 8828 } 8829 } 8830 8831 return rc; 8832 } 8833 8834 /** 8835 * ipr_reset_block_config_access - Block config access to the IOA 8836 * @ipr_cmd: ipr command struct 8837 * 8838 * Description: This attempts to block config access to the IOA 8839 * 8840 * Return value: 8841 * IPR_RC_JOB_CONTINUE 8842 **/ 8843 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd) 8844 { 8845 ipr_cmd->ioa_cfg->cfg_locked = 0; 8846 ipr_cmd->job_step = ipr_reset_block_config_access_wait; 8847 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 8848 return IPR_RC_JOB_CONTINUE; 8849 } 8850 8851 /** 8852 * ipr_reset_allowed - Query whether or not IOA can be reset 8853 * @ioa_cfg: ioa config struct 8854 * 8855 * Return value: 8856 * 0 if reset not allowed / non-zero if reset is allowed 8857 **/ 8858 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 8859 { 8860 volatile u32 temp_reg; 8861 8862 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 8863 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 8864 } 8865 8866 /** 8867 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 8868 * @ipr_cmd: ipr command struct 8869 * 8870 * Description: This function waits for adapter permission to run BIST, 8871 * then runs BIST. If the adapter does not give permission after a 8872 * reasonable time, we will reset the adapter anyway. The impact of 8873 * resetting the adapter without warning the adapter is the risk of 8874 * losing the persistent error log on the adapter. If the adapter is 8875 * reset while it is writing to the flash on the adapter, the flash 8876 * segment will have bad ECC and be zeroed. 8877 * 8878 * Return value: 8879 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8880 **/ 8881 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 8882 { 8883 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8884 int rc = IPR_RC_JOB_RETURN; 8885 8886 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 8887 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 8888 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 8889 } else { 8890 ipr_cmd->job_step = ipr_reset_block_config_access; 8891 rc = IPR_RC_JOB_CONTINUE; 8892 } 8893 8894 return rc; 8895 } 8896 8897 /** 8898 * ipr_reset_alert - Alert the adapter of a pending reset 8899 * @ipr_cmd: ipr command struct 8900 * 8901 * Description: This function alerts the adapter that it will be reset. 8902 * If memory space is not currently enabled, proceed directly 8903 * to running BIST on the adapter. The timer must always be started 8904 * so we guarantee we do not run BIST from ipr_isr. 8905 * 8906 * Return value: 8907 * IPR_RC_JOB_RETURN 8908 **/ 8909 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 8910 { 8911 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8912 u16 cmd_reg; 8913 int rc; 8914 8915 ENTER; 8916 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 8917 8918 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 8919 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 8920 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32); 8921 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 8922 } else { 8923 ipr_cmd->job_step = ipr_reset_block_config_access; 8924 } 8925 8926 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 8927 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 8928 8929 LEAVE; 8930 return IPR_RC_JOB_RETURN; 8931 } 8932 8933 /** 8934 * ipr_reset_quiesce_done - Complete IOA disconnect 8935 * @ipr_cmd: ipr command struct 8936 * 8937 * Description: Freeze the adapter to complete quiesce processing 8938 * 8939 * Return value: 8940 * IPR_RC_JOB_CONTINUE 8941 **/ 8942 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd) 8943 { 8944 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8945 8946 ENTER; 8947 ipr_cmd->job_step = ipr_ioa_bringdown_done; 8948 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 8949 LEAVE; 8950 return IPR_RC_JOB_CONTINUE; 8951 } 8952 8953 /** 8954 * ipr_reset_cancel_hcam_done - Check for outstanding commands 8955 * @ipr_cmd: ipr command struct 8956 * 8957 * Description: Ensure nothing is outstanding to the IOA and 8958 * proceed with IOA disconnect. Otherwise reset the IOA. 8959 * 8960 * Return value: 8961 * IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE 8962 **/ 8963 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd) 8964 { 8965 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8966 struct ipr_cmnd *loop_cmd; 8967 struct ipr_hrr_queue *hrrq; 8968 int rc = IPR_RC_JOB_CONTINUE; 8969 int count = 0; 8970 8971 ENTER; 8972 ipr_cmd->job_step = ipr_reset_quiesce_done; 8973 8974 for_each_hrrq(hrrq, ioa_cfg) { 8975 spin_lock(&hrrq->_lock); 8976 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) { 8977 count++; 8978 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8979 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 8980 rc = IPR_RC_JOB_RETURN; 8981 break; 8982 } 8983 spin_unlock(&hrrq->_lock); 8984 8985 if (count) 8986 break; 8987 } 8988 8989 LEAVE; 8990 return rc; 8991 } 8992 8993 /** 8994 * ipr_reset_cancel_hcam - Cancel outstanding HCAMs 8995 * @ipr_cmd: ipr command struct 8996 * 8997 * Description: Cancel any oustanding HCAMs to the IOA. 8998 * 8999 * Return value: 9000 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 9001 **/ 9002 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd) 9003 { 9004 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9005 int rc = IPR_RC_JOB_CONTINUE; 9006 struct ipr_cmd_pkt *cmd_pkt; 9007 struct ipr_cmnd *hcam_cmd; 9008 struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ]; 9009 9010 ENTER; 9011 ipr_cmd->job_step = ipr_reset_cancel_hcam_done; 9012 9013 if (!hrrq->ioa_is_dead) { 9014 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) { 9015 list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) { 9016 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC) 9017 continue; 9018 9019 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 9020 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 9021 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 9022 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 9023 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST; 9024 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB; 9025 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff; 9026 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff; 9027 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff; 9028 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff; 9029 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff; 9030 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff; 9031 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff; 9032 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff; 9033 9034 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 9035 IPR_CANCEL_TIMEOUT); 9036 9037 rc = IPR_RC_JOB_RETURN; 9038 ipr_cmd->job_step = ipr_reset_cancel_hcam; 9039 break; 9040 } 9041 } 9042 } else 9043 ipr_cmd->job_step = ipr_reset_alert; 9044 9045 LEAVE; 9046 return rc; 9047 } 9048 9049 /** 9050 * ipr_reset_ucode_download_done - Microcode download completion 9051 * @ipr_cmd: ipr command struct 9052 * 9053 * Description: This function unmaps the microcode download buffer. 9054 * 9055 * Return value: 9056 * IPR_RC_JOB_CONTINUE 9057 **/ 9058 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 9059 { 9060 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9061 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 9062 9063 dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist, 9064 sglist->num_sg, DMA_TO_DEVICE); 9065 9066 ipr_cmd->job_step = ipr_reset_alert; 9067 return IPR_RC_JOB_CONTINUE; 9068 } 9069 9070 /** 9071 * ipr_reset_ucode_download - Download microcode to the adapter 9072 * @ipr_cmd: ipr command struct 9073 * 9074 * Description: This function checks to see if it there is microcode 9075 * to download to the adapter. If there is, a download is performed. 9076 * 9077 * Return value: 9078 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 9079 **/ 9080 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 9081 { 9082 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9083 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 9084 9085 ENTER; 9086 ipr_cmd->job_step = ipr_reset_alert; 9087 9088 if (!sglist) 9089 return IPR_RC_JOB_CONTINUE; 9090 9091 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 9092 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 9093 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 9094 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 9095 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 9096 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 9097 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 9098 9099 if (ioa_cfg->sis64) 9100 ipr_build_ucode_ioadl64(ipr_cmd, sglist); 9101 else 9102 ipr_build_ucode_ioadl(ipr_cmd, sglist); 9103 ipr_cmd->job_step = ipr_reset_ucode_download_done; 9104 9105 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 9106 IPR_WRITE_BUFFER_TIMEOUT); 9107 9108 LEAVE; 9109 return IPR_RC_JOB_RETURN; 9110 } 9111 9112 /** 9113 * ipr_reset_shutdown_ioa - Shutdown the adapter 9114 * @ipr_cmd: ipr command struct 9115 * 9116 * Description: This function issues an adapter shutdown of the 9117 * specified type to the specified adapter as part of the 9118 * adapter reset job. 9119 * 9120 * Return value: 9121 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 9122 **/ 9123 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 9124 { 9125 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9126 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 9127 unsigned long timeout; 9128 int rc = IPR_RC_JOB_CONTINUE; 9129 9130 ENTER; 9131 if (shutdown_type == IPR_SHUTDOWN_QUIESCE) 9132 ipr_cmd->job_step = ipr_reset_cancel_hcam; 9133 else if (shutdown_type != IPR_SHUTDOWN_NONE && 9134 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) { 9135 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 9136 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 9137 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 9138 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 9139 9140 if (shutdown_type == IPR_SHUTDOWN_NORMAL) 9141 timeout = IPR_SHUTDOWN_TIMEOUT; 9142 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 9143 timeout = IPR_INTERNAL_TIMEOUT; 9144 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 9145 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO; 9146 else 9147 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 9148 9149 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 9150 9151 rc = IPR_RC_JOB_RETURN; 9152 ipr_cmd->job_step = ipr_reset_ucode_download; 9153 } else 9154 ipr_cmd->job_step = ipr_reset_alert; 9155 9156 LEAVE; 9157 return rc; 9158 } 9159 9160 /** 9161 * ipr_reset_ioa_job - Adapter reset job 9162 * @ipr_cmd: ipr command struct 9163 * 9164 * Description: This function is the job router for the adapter reset job. 9165 * 9166 * Return value: 9167 * none 9168 **/ 9169 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 9170 { 9171 u32 rc, ioasc; 9172 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9173 9174 do { 9175 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 9176 9177 if (ioa_cfg->reset_cmd != ipr_cmd) { 9178 /* 9179 * We are doing nested adapter resets and this is 9180 * not the current reset job. 9181 */ 9182 list_add_tail(&ipr_cmd->queue, 9183 &ipr_cmd->hrrq->hrrq_free_q); 9184 return; 9185 } 9186 9187 if (IPR_IOASC_SENSE_KEY(ioasc)) { 9188 rc = ipr_cmd->job_step_failed(ipr_cmd); 9189 if (rc == IPR_RC_JOB_RETURN) 9190 return; 9191 } 9192 9193 ipr_reinit_ipr_cmnd(ipr_cmd); 9194 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 9195 rc = ipr_cmd->job_step(ipr_cmd); 9196 } while (rc == IPR_RC_JOB_CONTINUE); 9197 } 9198 9199 /** 9200 * _ipr_initiate_ioa_reset - Initiate an adapter reset 9201 * @ioa_cfg: ioa config struct 9202 * @job_step: first job step of reset job 9203 * @shutdown_type: shutdown type 9204 * 9205 * Description: This function will initiate the reset of the given adapter 9206 * starting at the selected job step. 9207 * If the caller needs to wait on the completion of the reset, 9208 * the caller must sleep on the reset_wait_q. 9209 * 9210 * Return value: 9211 * none 9212 **/ 9213 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 9214 int (*job_step) (struct ipr_cmnd *), 9215 enum ipr_shutdown_type shutdown_type) 9216 { 9217 struct ipr_cmnd *ipr_cmd; 9218 int i; 9219 9220 ioa_cfg->in_reset_reload = 1; 9221 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9222 spin_lock(&ioa_cfg->hrrq[i]._lock); 9223 ioa_cfg->hrrq[i].allow_cmds = 0; 9224 spin_unlock(&ioa_cfg->hrrq[i]._lock); 9225 } 9226 wmb(); 9227 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) 9228 scsi_block_requests(ioa_cfg->host); 9229 9230 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 9231 ioa_cfg->reset_cmd = ipr_cmd; 9232 ipr_cmd->job_step = job_step; 9233 ipr_cmd->u.shutdown_type = shutdown_type; 9234 9235 ipr_reset_ioa_job(ipr_cmd); 9236 } 9237 9238 /** 9239 * ipr_initiate_ioa_reset - Initiate an adapter reset 9240 * @ioa_cfg: ioa config struct 9241 * @shutdown_type: shutdown type 9242 * 9243 * Description: This function will initiate the reset of the given adapter. 9244 * If the caller needs to wait on the completion of the reset, 9245 * the caller must sleep on the reset_wait_q. 9246 * 9247 * Return value: 9248 * none 9249 **/ 9250 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 9251 enum ipr_shutdown_type shutdown_type) 9252 { 9253 int i; 9254 9255 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 9256 return; 9257 9258 if (ioa_cfg->in_reset_reload) { 9259 if (ioa_cfg->sdt_state == GET_DUMP) 9260 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 9261 else if (ioa_cfg->sdt_state == READ_DUMP) 9262 ioa_cfg->sdt_state = ABORT_DUMP; 9263 } 9264 9265 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 9266 dev_err(&ioa_cfg->pdev->dev, 9267 "IOA taken offline - error recovery failed\n"); 9268 9269 ioa_cfg->reset_retries = 0; 9270 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9271 spin_lock(&ioa_cfg->hrrq[i]._lock); 9272 ioa_cfg->hrrq[i].ioa_is_dead = 1; 9273 spin_unlock(&ioa_cfg->hrrq[i]._lock); 9274 } 9275 wmb(); 9276 9277 if (ioa_cfg->in_ioa_bringdown) { 9278 ioa_cfg->reset_cmd = NULL; 9279 ioa_cfg->in_reset_reload = 0; 9280 ipr_fail_all_ops(ioa_cfg); 9281 wake_up_all(&ioa_cfg->reset_wait_q); 9282 9283 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) { 9284 spin_unlock_irq(ioa_cfg->host->host_lock); 9285 scsi_unblock_requests(ioa_cfg->host); 9286 spin_lock_irq(ioa_cfg->host->host_lock); 9287 } 9288 return; 9289 } else { 9290 ioa_cfg->in_ioa_bringdown = 1; 9291 shutdown_type = IPR_SHUTDOWN_NONE; 9292 } 9293 } 9294 9295 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 9296 shutdown_type); 9297 } 9298 9299 /** 9300 * ipr_reset_freeze - Hold off all I/O activity 9301 * @ipr_cmd: ipr command struct 9302 * 9303 * Description: If the PCI slot is frozen, hold off all I/O 9304 * activity; then, as soon as the slot is available again, 9305 * initiate an adapter reset. 9306 */ 9307 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 9308 { 9309 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9310 int i; 9311 9312 /* Disallow new interrupts, avoid loop */ 9313 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9314 spin_lock(&ioa_cfg->hrrq[i]._lock); 9315 ioa_cfg->hrrq[i].allow_interrupts = 0; 9316 spin_unlock(&ioa_cfg->hrrq[i]._lock); 9317 } 9318 wmb(); 9319 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 9320 ipr_cmd->done = ipr_reset_ioa_job; 9321 return IPR_RC_JOB_RETURN; 9322 } 9323 9324 /** 9325 * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled 9326 * @pdev: PCI device struct 9327 * 9328 * Description: This routine is called to tell us that the MMIO 9329 * access to the IOA has been restored 9330 */ 9331 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev) 9332 { 9333 unsigned long flags = 0; 9334 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9335 9336 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9337 if (!ioa_cfg->probe_done) 9338 pci_save_state(pdev); 9339 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9340 return PCI_ERS_RESULT_NEED_RESET; 9341 } 9342 9343 /** 9344 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 9345 * @pdev: PCI device struct 9346 * 9347 * Description: This routine is called to tell us that the PCI bus 9348 * is down. Can't do anything here, except put the device driver 9349 * into a holding pattern, waiting for the PCI bus to come back. 9350 */ 9351 static void ipr_pci_frozen(struct pci_dev *pdev) 9352 { 9353 unsigned long flags = 0; 9354 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9355 9356 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9357 if (ioa_cfg->probe_done) 9358 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 9359 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9360 } 9361 9362 /** 9363 * ipr_pci_slot_reset - Called when PCI slot has been reset. 9364 * @pdev: PCI device struct 9365 * 9366 * Description: This routine is called by the pci error recovery 9367 * code after the PCI slot has been reset, just before we 9368 * should resume normal operations. 9369 */ 9370 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 9371 { 9372 unsigned long flags = 0; 9373 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9374 9375 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9376 if (ioa_cfg->probe_done) { 9377 if (ioa_cfg->needs_warm_reset) 9378 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 9379 else 9380 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 9381 IPR_SHUTDOWN_NONE); 9382 } else 9383 wake_up_all(&ioa_cfg->eeh_wait_q); 9384 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9385 return PCI_ERS_RESULT_RECOVERED; 9386 } 9387 9388 /** 9389 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 9390 * @pdev: PCI device struct 9391 * 9392 * Description: This routine is called when the PCI bus has 9393 * permanently failed. 9394 */ 9395 static void ipr_pci_perm_failure(struct pci_dev *pdev) 9396 { 9397 unsigned long flags = 0; 9398 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9399 int i; 9400 9401 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9402 if (ioa_cfg->probe_done) { 9403 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 9404 ioa_cfg->sdt_state = ABORT_DUMP; 9405 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1; 9406 ioa_cfg->in_ioa_bringdown = 1; 9407 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9408 spin_lock(&ioa_cfg->hrrq[i]._lock); 9409 ioa_cfg->hrrq[i].allow_cmds = 0; 9410 spin_unlock(&ioa_cfg->hrrq[i]._lock); 9411 } 9412 wmb(); 9413 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 9414 } else 9415 wake_up_all(&ioa_cfg->eeh_wait_q); 9416 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9417 } 9418 9419 /** 9420 * ipr_pci_error_detected - Called when a PCI error is detected. 9421 * @pdev: PCI device struct 9422 * @state: PCI channel state 9423 * 9424 * Description: Called when a PCI error is detected. 9425 * 9426 * Return value: 9427 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 9428 */ 9429 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 9430 pci_channel_state_t state) 9431 { 9432 switch (state) { 9433 case pci_channel_io_frozen: 9434 ipr_pci_frozen(pdev); 9435 return PCI_ERS_RESULT_CAN_RECOVER; 9436 case pci_channel_io_perm_failure: 9437 ipr_pci_perm_failure(pdev); 9438 return PCI_ERS_RESULT_DISCONNECT; 9439 break; 9440 default: 9441 break; 9442 } 9443 return PCI_ERS_RESULT_NEED_RESET; 9444 } 9445 9446 /** 9447 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 9448 * @ioa_cfg: ioa cfg struct 9449 * 9450 * Description: This is the second phase of adapter initialization 9451 * This function takes care of initilizing the adapter to the point 9452 * where it can accept new commands. 9453 9454 * Return value: 9455 * 0 on success / -EIO on failure 9456 **/ 9457 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 9458 { 9459 int rc = 0; 9460 unsigned long host_lock_flags = 0; 9461 9462 ENTER; 9463 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 9464 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 9465 ioa_cfg->probe_done = 1; 9466 if (ioa_cfg->needs_hard_reset) { 9467 ioa_cfg->needs_hard_reset = 0; 9468 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 9469 } else 9470 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 9471 IPR_SHUTDOWN_NONE); 9472 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 9473 9474 LEAVE; 9475 return rc; 9476 } 9477 9478 /** 9479 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 9480 * @ioa_cfg: ioa config struct 9481 * 9482 * Return value: 9483 * none 9484 **/ 9485 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 9486 { 9487 int i; 9488 9489 if (ioa_cfg->ipr_cmnd_list) { 9490 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 9491 if (ioa_cfg->ipr_cmnd_list[i]) 9492 dma_pool_free(ioa_cfg->ipr_cmd_pool, 9493 ioa_cfg->ipr_cmnd_list[i], 9494 ioa_cfg->ipr_cmnd_list_dma[i]); 9495 9496 ioa_cfg->ipr_cmnd_list[i] = NULL; 9497 } 9498 } 9499 9500 if (ioa_cfg->ipr_cmd_pool) 9501 dma_pool_destroy(ioa_cfg->ipr_cmd_pool); 9502 9503 kfree(ioa_cfg->ipr_cmnd_list); 9504 kfree(ioa_cfg->ipr_cmnd_list_dma); 9505 ioa_cfg->ipr_cmnd_list = NULL; 9506 ioa_cfg->ipr_cmnd_list_dma = NULL; 9507 ioa_cfg->ipr_cmd_pool = NULL; 9508 } 9509 9510 /** 9511 * ipr_free_mem - Frees memory allocated for an adapter 9512 * @ioa_cfg: ioa cfg struct 9513 * 9514 * Return value: 9515 * nothing 9516 **/ 9517 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 9518 { 9519 int i; 9520 9521 kfree(ioa_cfg->res_entries); 9522 dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs), 9523 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 9524 ipr_free_cmd_blks(ioa_cfg); 9525 9526 for (i = 0; i < ioa_cfg->hrrq_num; i++) 9527 dma_free_coherent(&ioa_cfg->pdev->dev, 9528 sizeof(u32) * ioa_cfg->hrrq[i].size, 9529 ioa_cfg->hrrq[i].host_rrq, 9530 ioa_cfg->hrrq[i].host_rrq_dma); 9531 9532 dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size, 9533 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma); 9534 9535 for (i = 0; i < IPR_MAX_HCAMS; i++) { 9536 dma_free_coherent(&ioa_cfg->pdev->dev, 9537 sizeof(struct ipr_hostrcb), 9538 ioa_cfg->hostrcb[i], 9539 ioa_cfg->hostrcb_dma[i]); 9540 } 9541 9542 ipr_free_dump(ioa_cfg); 9543 kfree(ioa_cfg->trace); 9544 } 9545 9546 /** 9547 * ipr_free_irqs - Free all allocated IRQs for the adapter. 9548 * @ioa_cfg: ipr cfg struct 9549 * 9550 * This function frees all allocated IRQs for the 9551 * specified adapter. 9552 * 9553 * Return value: 9554 * none 9555 **/ 9556 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg) 9557 { 9558 struct pci_dev *pdev = ioa_cfg->pdev; 9559 int i; 9560 9561 for (i = 0; i < ioa_cfg->nvectors; i++) 9562 free_irq(pci_irq_vector(pdev, i), &ioa_cfg->hrrq[i]); 9563 pci_free_irq_vectors(pdev); 9564 } 9565 9566 /** 9567 * ipr_free_all_resources - Free all allocated resources for an adapter. 9568 * @ipr_cmd: ipr command struct 9569 * 9570 * This function frees all allocated resources for the 9571 * specified adapter. 9572 * 9573 * Return value: 9574 * none 9575 **/ 9576 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 9577 { 9578 struct pci_dev *pdev = ioa_cfg->pdev; 9579 9580 ENTER; 9581 ipr_free_irqs(ioa_cfg); 9582 if (ioa_cfg->reset_work_q) 9583 destroy_workqueue(ioa_cfg->reset_work_q); 9584 iounmap(ioa_cfg->hdw_dma_regs); 9585 pci_release_regions(pdev); 9586 ipr_free_mem(ioa_cfg); 9587 scsi_host_put(ioa_cfg->host); 9588 pci_disable_device(pdev); 9589 LEAVE; 9590 } 9591 9592 /** 9593 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 9594 * @ioa_cfg: ioa config struct 9595 * 9596 * Return value: 9597 * 0 on success / -ENOMEM on allocation failure 9598 **/ 9599 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 9600 { 9601 struct ipr_cmnd *ipr_cmd; 9602 struct ipr_ioarcb *ioarcb; 9603 dma_addr_t dma_addr; 9604 int i, entries_each_hrrq, hrrq_id = 0; 9605 9606 ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev, 9607 sizeof(struct ipr_cmnd), 512, 0); 9608 9609 if (!ioa_cfg->ipr_cmd_pool) 9610 return -ENOMEM; 9611 9612 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL); 9613 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL); 9614 9615 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) { 9616 ipr_free_cmd_blks(ioa_cfg); 9617 return -ENOMEM; 9618 } 9619 9620 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9621 if (ioa_cfg->hrrq_num > 1) { 9622 if (i == 0) { 9623 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS; 9624 ioa_cfg->hrrq[i].min_cmd_id = 0; 9625 ioa_cfg->hrrq[i].max_cmd_id = 9626 (entries_each_hrrq - 1); 9627 } else { 9628 entries_each_hrrq = 9629 IPR_NUM_BASE_CMD_BLKS/ 9630 (ioa_cfg->hrrq_num - 1); 9631 ioa_cfg->hrrq[i].min_cmd_id = 9632 IPR_NUM_INTERNAL_CMD_BLKS + 9633 (i - 1) * entries_each_hrrq; 9634 ioa_cfg->hrrq[i].max_cmd_id = 9635 (IPR_NUM_INTERNAL_CMD_BLKS + 9636 i * entries_each_hrrq - 1); 9637 } 9638 } else { 9639 entries_each_hrrq = IPR_NUM_CMD_BLKS; 9640 ioa_cfg->hrrq[i].min_cmd_id = 0; 9641 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1); 9642 } 9643 ioa_cfg->hrrq[i].size = entries_each_hrrq; 9644 } 9645 9646 BUG_ON(ioa_cfg->hrrq_num == 0); 9647 9648 i = IPR_NUM_CMD_BLKS - 9649 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1; 9650 if (i > 0) { 9651 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i; 9652 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i; 9653 } 9654 9655 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 9656 ipr_cmd = dma_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr); 9657 9658 if (!ipr_cmd) { 9659 ipr_free_cmd_blks(ioa_cfg); 9660 return -ENOMEM; 9661 } 9662 9663 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 9664 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 9665 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 9666 9667 ioarcb = &ipr_cmd->ioarcb; 9668 ipr_cmd->dma_addr = dma_addr; 9669 if (ioa_cfg->sis64) 9670 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr); 9671 else 9672 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 9673 9674 ioarcb->host_response_handle = cpu_to_be32(i << 2); 9675 if (ioa_cfg->sis64) { 9676 ioarcb->u.sis64_addr_data.data_ioadl_addr = 9677 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 9678 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr = 9679 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64)); 9680 } else { 9681 ioarcb->write_ioadl_addr = 9682 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 9683 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 9684 ioarcb->ioasa_host_pci_addr = 9685 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa)); 9686 } 9687 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 9688 ipr_cmd->cmd_index = i; 9689 ipr_cmd->ioa_cfg = ioa_cfg; 9690 ipr_cmd->sense_buffer_dma = dma_addr + 9691 offsetof(struct ipr_cmnd, sense_buffer); 9692 9693 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id; 9694 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id]; 9695 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 9696 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id) 9697 hrrq_id++; 9698 } 9699 9700 return 0; 9701 } 9702 9703 /** 9704 * ipr_alloc_mem - Allocate memory for an adapter 9705 * @ioa_cfg: ioa config struct 9706 * 9707 * Return value: 9708 * 0 on success / non-zero for error 9709 **/ 9710 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 9711 { 9712 struct pci_dev *pdev = ioa_cfg->pdev; 9713 int i, rc = -ENOMEM; 9714 9715 ENTER; 9716 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * 9717 ioa_cfg->max_devs_supported, GFP_KERNEL); 9718 9719 if (!ioa_cfg->res_entries) 9720 goto out; 9721 9722 for (i = 0; i < ioa_cfg->max_devs_supported; i++) { 9723 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 9724 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg; 9725 } 9726 9727 ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev, 9728 sizeof(struct ipr_misc_cbs), 9729 &ioa_cfg->vpd_cbs_dma, 9730 GFP_KERNEL); 9731 9732 if (!ioa_cfg->vpd_cbs) 9733 goto out_free_res_entries; 9734 9735 if (ipr_alloc_cmd_blks(ioa_cfg)) 9736 goto out_free_vpd_cbs; 9737 9738 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9739 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev, 9740 sizeof(u32) * ioa_cfg->hrrq[i].size, 9741 &ioa_cfg->hrrq[i].host_rrq_dma, 9742 GFP_KERNEL); 9743 9744 if (!ioa_cfg->hrrq[i].host_rrq) { 9745 while (--i > 0) 9746 dma_free_coherent(&pdev->dev, 9747 sizeof(u32) * ioa_cfg->hrrq[i].size, 9748 ioa_cfg->hrrq[i].host_rrq, 9749 ioa_cfg->hrrq[i].host_rrq_dma); 9750 goto out_ipr_free_cmd_blocks; 9751 } 9752 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg; 9753 } 9754 9755 ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev, 9756 ioa_cfg->cfg_table_size, 9757 &ioa_cfg->cfg_table_dma, 9758 GFP_KERNEL); 9759 9760 if (!ioa_cfg->u.cfg_table) 9761 goto out_free_host_rrq; 9762 9763 for (i = 0; i < IPR_MAX_HCAMS; i++) { 9764 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev, 9765 sizeof(struct ipr_hostrcb), 9766 &ioa_cfg->hostrcb_dma[i], 9767 GFP_KERNEL); 9768 9769 if (!ioa_cfg->hostrcb[i]) 9770 goto out_free_hostrcb_dma; 9771 9772 ioa_cfg->hostrcb[i]->hostrcb_dma = 9773 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 9774 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg; 9775 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 9776 } 9777 9778 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * 9779 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 9780 9781 if (!ioa_cfg->trace) 9782 goto out_free_hostrcb_dma; 9783 9784 rc = 0; 9785 out: 9786 LEAVE; 9787 return rc; 9788 9789 out_free_hostrcb_dma: 9790 while (i-- > 0) { 9791 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb), 9792 ioa_cfg->hostrcb[i], 9793 ioa_cfg->hostrcb_dma[i]); 9794 } 9795 dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size, 9796 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma); 9797 out_free_host_rrq: 9798 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9799 dma_free_coherent(&pdev->dev, 9800 sizeof(u32) * ioa_cfg->hrrq[i].size, 9801 ioa_cfg->hrrq[i].host_rrq, 9802 ioa_cfg->hrrq[i].host_rrq_dma); 9803 } 9804 out_ipr_free_cmd_blocks: 9805 ipr_free_cmd_blks(ioa_cfg); 9806 out_free_vpd_cbs: 9807 dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs), 9808 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 9809 out_free_res_entries: 9810 kfree(ioa_cfg->res_entries); 9811 goto out; 9812 } 9813 9814 /** 9815 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 9816 * @ioa_cfg: ioa config struct 9817 * 9818 * Return value: 9819 * none 9820 **/ 9821 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 9822 { 9823 int i; 9824 9825 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 9826 ioa_cfg->bus_attr[i].bus = i; 9827 ioa_cfg->bus_attr[i].qas_enabled = 0; 9828 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 9829 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 9830 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 9831 else 9832 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 9833 } 9834 } 9835 9836 /** 9837 * ipr_init_regs - Initialize IOA registers 9838 * @ioa_cfg: ioa config struct 9839 * 9840 * Return value: 9841 * none 9842 **/ 9843 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg) 9844 { 9845 const struct ipr_interrupt_offsets *p; 9846 struct ipr_interrupts *t; 9847 void __iomem *base; 9848 9849 p = &ioa_cfg->chip_cfg->regs; 9850 t = &ioa_cfg->regs; 9851 base = ioa_cfg->hdw_dma_regs; 9852 9853 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 9854 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 9855 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32; 9856 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 9857 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32; 9858 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 9859 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32; 9860 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 9861 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32; 9862 t->ioarrin_reg = base + p->ioarrin_reg; 9863 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 9864 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32; 9865 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 9866 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32; 9867 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 9868 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32; 9869 9870 if (ioa_cfg->sis64) { 9871 t->init_feedback_reg = base + p->init_feedback_reg; 9872 t->dump_addr_reg = base + p->dump_addr_reg; 9873 t->dump_data_reg = base + p->dump_data_reg; 9874 t->endian_swap_reg = base + p->endian_swap_reg; 9875 } 9876 } 9877 9878 /** 9879 * ipr_init_ioa_cfg - Initialize IOA config struct 9880 * @ioa_cfg: ioa config struct 9881 * @host: scsi host struct 9882 * @pdev: PCI dev struct 9883 * 9884 * Return value: 9885 * none 9886 **/ 9887 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 9888 struct Scsi_Host *host, struct pci_dev *pdev) 9889 { 9890 int i; 9891 9892 ioa_cfg->host = host; 9893 ioa_cfg->pdev = pdev; 9894 ioa_cfg->log_level = ipr_log_level; 9895 ioa_cfg->doorbell = IPR_DOORBELL; 9896 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 9897 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 9898 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 9899 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 9900 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 9901 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 9902 9903 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 9904 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 9905 INIT_LIST_HEAD(&ioa_cfg->hostrcb_report_q); 9906 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 9907 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 9908 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread); 9909 init_waitqueue_head(&ioa_cfg->reset_wait_q); 9910 init_waitqueue_head(&ioa_cfg->msi_wait_q); 9911 init_waitqueue_head(&ioa_cfg->eeh_wait_q); 9912 ioa_cfg->sdt_state = INACTIVE; 9913 9914 ipr_initialize_bus_attr(ioa_cfg); 9915 ioa_cfg->max_devs_supported = ipr_max_devs; 9916 9917 if (ioa_cfg->sis64) { 9918 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS; 9919 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET; 9920 if (ipr_max_devs > IPR_MAX_SIS64_DEVS) 9921 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS; 9922 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64) 9923 + ((sizeof(struct ipr_config_table_entry64) 9924 * ioa_cfg->max_devs_supported))); 9925 } else { 9926 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 9927 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 9928 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS) 9929 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS; 9930 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr) 9931 + ((sizeof(struct ipr_config_table_entry) 9932 * ioa_cfg->max_devs_supported))); 9933 } 9934 9935 host->max_channel = IPR_VSET_BUS; 9936 host->unique_id = host->host_no; 9937 host->max_cmd_len = IPR_MAX_CDB_LEN; 9938 host->can_queue = ioa_cfg->max_cmds; 9939 pci_set_drvdata(pdev, ioa_cfg); 9940 9941 for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) { 9942 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q); 9943 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q); 9944 spin_lock_init(&ioa_cfg->hrrq[i]._lock); 9945 if (i == 0) 9946 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock; 9947 else 9948 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock; 9949 } 9950 } 9951 9952 /** 9953 * ipr_get_chip_info - Find adapter chip information 9954 * @dev_id: PCI device id struct 9955 * 9956 * Return value: 9957 * ptr to chip information on success / NULL on failure 9958 **/ 9959 static const struct ipr_chip_t * 9960 ipr_get_chip_info(const struct pci_device_id *dev_id) 9961 { 9962 int i; 9963 9964 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 9965 if (ipr_chip[i].vendor == dev_id->vendor && 9966 ipr_chip[i].device == dev_id->device) 9967 return &ipr_chip[i]; 9968 return NULL; 9969 } 9970 9971 /** 9972 * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete 9973 * during probe time 9974 * @ioa_cfg: ioa config struct 9975 * 9976 * Return value: 9977 * None 9978 **/ 9979 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg) 9980 { 9981 struct pci_dev *pdev = ioa_cfg->pdev; 9982 9983 if (pci_channel_offline(pdev)) { 9984 wait_event_timeout(ioa_cfg->eeh_wait_q, 9985 !pci_channel_offline(pdev), 9986 IPR_PCI_ERROR_RECOVERY_TIMEOUT); 9987 pci_restore_state(pdev); 9988 } 9989 } 9990 9991 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg) 9992 { 9993 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1; 9994 9995 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) { 9996 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n, 9997 "host%d-%d", ioa_cfg->host->host_no, vec_idx); 9998 ioa_cfg->vectors_info[vec_idx]. 9999 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0; 10000 } 10001 } 10002 10003 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg, 10004 struct pci_dev *pdev) 10005 { 10006 int i, rc; 10007 10008 for (i = 1; i < ioa_cfg->nvectors; i++) { 10009 rc = request_irq(pci_irq_vector(pdev, i), 10010 ipr_isr_mhrrq, 10011 0, 10012 ioa_cfg->vectors_info[i].desc, 10013 &ioa_cfg->hrrq[i]); 10014 if (rc) { 10015 while (--i >= 0) 10016 free_irq(pci_irq_vector(pdev, i), 10017 &ioa_cfg->hrrq[i]); 10018 return rc; 10019 } 10020 } 10021 return 0; 10022 } 10023 10024 /** 10025 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi(). 10026 * @pdev: PCI device struct 10027 * 10028 * Description: Simply set the msi_received flag to 1 indicating that 10029 * Message Signaled Interrupts are supported. 10030 * 10031 * Return value: 10032 * 0 on success / non-zero on failure 10033 **/ 10034 static irqreturn_t ipr_test_intr(int irq, void *devp) 10035 { 10036 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 10037 unsigned long lock_flags = 0; 10038 irqreturn_t rc = IRQ_HANDLED; 10039 10040 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq); 10041 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10042 10043 ioa_cfg->msi_received = 1; 10044 wake_up(&ioa_cfg->msi_wait_q); 10045 10046 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10047 return rc; 10048 } 10049 10050 /** 10051 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support. 10052 * @pdev: PCI device struct 10053 * 10054 * Description: This routine sets up and initiates a test interrupt to determine 10055 * if the interrupt is received via the ipr_test_intr() service routine. 10056 * If the tests fails, the driver will fall back to LSI. 10057 * 10058 * Return value: 10059 * 0 on success / non-zero on failure 10060 **/ 10061 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev) 10062 { 10063 int rc; 10064 volatile u32 int_reg; 10065 unsigned long lock_flags = 0; 10066 int irq = pci_irq_vector(pdev, 0); 10067 10068 ENTER; 10069 10070 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10071 init_waitqueue_head(&ioa_cfg->msi_wait_q); 10072 ioa_cfg->msi_received = 0; 10073 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 10074 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32); 10075 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 10076 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10077 10078 rc = request_irq(irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg); 10079 if (rc) { 10080 dev_err(&pdev->dev, "Can not assign irq %d\n", irq); 10081 return rc; 10082 } else if (ipr_debug) 10083 dev_info(&pdev->dev, "IRQ assigned: %d\n", irq); 10084 10085 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32); 10086 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 10087 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ); 10088 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10089 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 10090 10091 if (!ioa_cfg->msi_received) { 10092 /* MSI test failed */ 10093 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n"); 10094 rc = -EOPNOTSUPP; 10095 } else if (ipr_debug) 10096 dev_info(&pdev->dev, "MSI test succeeded.\n"); 10097 10098 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10099 10100 free_irq(irq, ioa_cfg); 10101 10102 LEAVE; 10103 10104 return rc; 10105 } 10106 10107 /* ipr_probe_ioa - Allocates memory and does first stage of initialization 10108 * @pdev: PCI device struct 10109 * @dev_id: PCI device id struct 10110 * 10111 * Return value: 10112 * 0 on success / non-zero on failure 10113 **/ 10114 static int ipr_probe_ioa(struct pci_dev *pdev, 10115 const struct pci_device_id *dev_id) 10116 { 10117 struct ipr_ioa_cfg *ioa_cfg; 10118 struct Scsi_Host *host; 10119 unsigned long ipr_regs_pci; 10120 void __iomem *ipr_regs; 10121 int rc = PCIBIOS_SUCCESSFUL; 10122 volatile u32 mask, uproc, interrupts; 10123 unsigned long lock_flags, driver_lock_flags; 10124 unsigned int irq_flag; 10125 10126 ENTER; 10127 10128 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 10129 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 10130 10131 if (!host) { 10132 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 10133 rc = -ENOMEM; 10134 goto out; 10135 } 10136 10137 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 10138 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 10139 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops); 10140 10141 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id); 10142 10143 if (!ioa_cfg->ipr_chip) { 10144 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 10145 dev_id->vendor, dev_id->device); 10146 goto out_scsi_host_put; 10147 } 10148 10149 /* set SIS 32 or SIS 64 */ 10150 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0; 10151 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg; 10152 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr; 10153 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds; 10154 10155 if (ipr_transop_timeout) 10156 ioa_cfg->transop_timeout = ipr_transop_timeout; 10157 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT) 10158 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT; 10159 else 10160 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT; 10161 10162 ioa_cfg->revid = pdev->revision; 10163 10164 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 10165 10166 ipr_regs_pci = pci_resource_start(pdev, 0); 10167 10168 rc = pci_request_regions(pdev, IPR_NAME); 10169 if (rc < 0) { 10170 dev_err(&pdev->dev, 10171 "Couldn't register memory range of registers\n"); 10172 goto out_scsi_host_put; 10173 } 10174 10175 rc = pci_enable_device(pdev); 10176 10177 if (rc || pci_channel_offline(pdev)) { 10178 if (pci_channel_offline(pdev)) { 10179 ipr_wait_for_pci_err_recovery(ioa_cfg); 10180 rc = pci_enable_device(pdev); 10181 } 10182 10183 if (rc) { 10184 dev_err(&pdev->dev, "Cannot enable adapter\n"); 10185 ipr_wait_for_pci_err_recovery(ioa_cfg); 10186 goto out_release_regions; 10187 } 10188 } 10189 10190 ipr_regs = pci_ioremap_bar(pdev, 0); 10191 10192 if (!ipr_regs) { 10193 dev_err(&pdev->dev, 10194 "Couldn't map memory range of registers\n"); 10195 rc = -ENOMEM; 10196 goto out_disable; 10197 } 10198 10199 ioa_cfg->hdw_dma_regs = ipr_regs; 10200 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 10201 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 10202 10203 ipr_init_regs(ioa_cfg); 10204 10205 if (ioa_cfg->sis64) { 10206 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 10207 if (rc < 0) { 10208 dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n"); 10209 rc = dma_set_mask_and_coherent(&pdev->dev, 10210 DMA_BIT_MASK(32)); 10211 } 10212 } else 10213 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 10214 10215 if (rc < 0) { 10216 dev_err(&pdev->dev, "Failed to set DMA mask\n"); 10217 goto cleanup_nomem; 10218 } 10219 10220 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 10221 ioa_cfg->chip_cfg->cache_line_size); 10222 10223 if (rc != PCIBIOS_SUCCESSFUL) { 10224 dev_err(&pdev->dev, "Write of cache line size failed\n"); 10225 ipr_wait_for_pci_err_recovery(ioa_cfg); 10226 rc = -EIO; 10227 goto cleanup_nomem; 10228 } 10229 10230 /* Issue MMIO read to ensure card is not in EEH */ 10231 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg); 10232 ipr_wait_for_pci_err_recovery(ioa_cfg); 10233 10234 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) { 10235 dev_err(&pdev->dev, "The max number of MSIX is %d\n", 10236 IPR_MAX_MSIX_VECTORS); 10237 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS; 10238 } 10239 10240 irq_flag = PCI_IRQ_LEGACY; 10241 if (ioa_cfg->ipr_chip->has_msi) 10242 irq_flag |= PCI_IRQ_MSI | PCI_IRQ_MSIX; 10243 rc = pci_alloc_irq_vectors(pdev, 1, ipr_number_of_msix, irq_flag); 10244 if (rc < 0) { 10245 ipr_wait_for_pci_err_recovery(ioa_cfg); 10246 goto cleanup_nomem; 10247 } 10248 ioa_cfg->nvectors = rc; 10249 10250 if (!pdev->msi_enabled && !pdev->msix_enabled) 10251 ioa_cfg->clear_isr = 1; 10252 10253 pci_set_master(pdev); 10254 10255 if (pci_channel_offline(pdev)) { 10256 ipr_wait_for_pci_err_recovery(ioa_cfg); 10257 pci_set_master(pdev); 10258 if (pci_channel_offline(pdev)) { 10259 rc = -EIO; 10260 goto out_msi_disable; 10261 } 10262 } 10263 10264 if (pdev->msi_enabled || pdev->msix_enabled) { 10265 rc = ipr_test_msi(ioa_cfg, pdev); 10266 switch (rc) { 10267 case 0: 10268 dev_info(&pdev->dev, 10269 "Request for %d MSI%ss succeeded.", ioa_cfg->nvectors, 10270 pdev->msix_enabled ? "-X" : ""); 10271 break; 10272 case -EOPNOTSUPP: 10273 ipr_wait_for_pci_err_recovery(ioa_cfg); 10274 pci_free_irq_vectors(pdev); 10275 10276 ioa_cfg->nvectors = 1; 10277 ioa_cfg->clear_isr = 1; 10278 break; 10279 default: 10280 goto out_msi_disable; 10281 } 10282 } 10283 10284 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors, 10285 (unsigned int)num_online_cpus(), 10286 (unsigned int)IPR_MAX_HRRQ_NUM); 10287 10288 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 10289 goto out_msi_disable; 10290 10291 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 10292 goto out_msi_disable; 10293 10294 rc = ipr_alloc_mem(ioa_cfg); 10295 if (rc < 0) { 10296 dev_err(&pdev->dev, 10297 "Couldn't allocate enough memory for device driver!\n"); 10298 goto out_msi_disable; 10299 } 10300 10301 /* Save away PCI config space for use following IOA reset */ 10302 rc = pci_save_state(pdev); 10303 10304 if (rc != PCIBIOS_SUCCESSFUL) { 10305 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 10306 rc = -EIO; 10307 goto cleanup_nolog; 10308 } 10309 10310 /* 10311 * If HRRQ updated interrupt is not masked, or reset alert is set, 10312 * the card is in an unknown state and needs a hard reset 10313 */ 10314 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 10315 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32); 10316 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); 10317 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 10318 ioa_cfg->needs_hard_reset = 1; 10319 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices) 10320 ioa_cfg->needs_hard_reset = 1; 10321 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED) 10322 ioa_cfg->ioa_unit_checked = 1; 10323 10324 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10325 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 10326 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10327 10328 if (pdev->msi_enabled || pdev->msix_enabled) { 10329 name_msi_vectors(ioa_cfg); 10330 rc = request_irq(pci_irq_vector(pdev, 0), ipr_isr, 0, 10331 ioa_cfg->vectors_info[0].desc, 10332 &ioa_cfg->hrrq[0]); 10333 if (!rc) 10334 rc = ipr_request_other_msi_irqs(ioa_cfg, pdev); 10335 } else { 10336 rc = request_irq(pdev->irq, ipr_isr, 10337 IRQF_SHARED, 10338 IPR_NAME, &ioa_cfg->hrrq[0]); 10339 } 10340 if (rc) { 10341 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 10342 pdev->irq, rc); 10343 goto cleanup_nolog; 10344 } 10345 10346 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) || 10347 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) { 10348 ioa_cfg->needs_warm_reset = 1; 10349 ioa_cfg->reset = ipr_reset_slot_reset; 10350 10351 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d", 10352 WQ_MEM_RECLAIM, host->host_no); 10353 10354 if (!ioa_cfg->reset_work_q) { 10355 dev_err(&pdev->dev, "Couldn't register reset workqueue\n"); 10356 rc = -ENOMEM; 10357 goto out_free_irq; 10358 } 10359 } else 10360 ioa_cfg->reset = ipr_reset_start_bist; 10361 10362 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); 10363 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 10364 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); 10365 10366 LEAVE; 10367 out: 10368 return rc; 10369 10370 out_free_irq: 10371 ipr_free_irqs(ioa_cfg); 10372 cleanup_nolog: 10373 ipr_free_mem(ioa_cfg); 10374 out_msi_disable: 10375 ipr_wait_for_pci_err_recovery(ioa_cfg); 10376 pci_free_irq_vectors(pdev); 10377 cleanup_nomem: 10378 iounmap(ipr_regs); 10379 out_disable: 10380 pci_disable_device(pdev); 10381 out_release_regions: 10382 pci_release_regions(pdev); 10383 out_scsi_host_put: 10384 scsi_host_put(host); 10385 goto out; 10386 } 10387 10388 /** 10389 * ipr_initiate_ioa_bringdown - Bring down an adapter 10390 * @ioa_cfg: ioa config struct 10391 * @shutdown_type: shutdown type 10392 * 10393 * Description: This function will initiate bringing down the adapter. 10394 * This consists of issuing an IOA shutdown to the adapter 10395 * to flush the cache, and running BIST. 10396 * If the caller needs to wait on the completion of the reset, 10397 * the caller must sleep on the reset_wait_q. 10398 * 10399 * Return value: 10400 * none 10401 **/ 10402 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 10403 enum ipr_shutdown_type shutdown_type) 10404 { 10405 ENTER; 10406 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 10407 ioa_cfg->sdt_state = ABORT_DUMP; 10408 ioa_cfg->reset_retries = 0; 10409 ioa_cfg->in_ioa_bringdown = 1; 10410 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 10411 LEAVE; 10412 } 10413 10414 /** 10415 * __ipr_remove - Remove a single adapter 10416 * @pdev: pci device struct 10417 * 10418 * Adapter hot plug remove entry point. 10419 * 10420 * Return value: 10421 * none 10422 **/ 10423 static void __ipr_remove(struct pci_dev *pdev) 10424 { 10425 unsigned long host_lock_flags = 0; 10426 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 10427 int i; 10428 unsigned long driver_lock_flags; 10429 ENTER; 10430 10431 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 10432 while (ioa_cfg->in_reset_reload) { 10433 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 10434 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 10435 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 10436 } 10437 10438 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 10439 spin_lock(&ioa_cfg->hrrq[i]._lock); 10440 ioa_cfg->hrrq[i].removing_ioa = 1; 10441 spin_unlock(&ioa_cfg->hrrq[i]._lock); 10442 } 10443 wmb(); 10444 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 10445 10446 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 10447 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 10448 flush_work(&ioa_cfg->work_q); 10449 if (ioa_cfg->reset_work_q) 10450 flush_workqueue(ioa_cfg->reset_work_q); 10451 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 10452 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 10453 10454 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); 10455 list_del(&ioa_cfg->queue); 10456 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); 10457 10458 if (ioa_cfg->sdt_state == ABORT_DUMP) 10459 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 10460 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 10461 10462 ipr_free_all_resources(ioa_cfg); 10463 10464 LEAVE; 10465 } 10466 10467 /** 10468 * ipr_remove - IOA hot plug remove entry point 10469 * @pdev: pci device struct 10470 * 10471 * Adapter hot plug remove entry point. 10472 * 10473 * Return value: 10474 * none 10475 **/ 10476 static void ipr_remove(struct pci_dev *pdev) 10477 { 10478 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 10479 10480 ENTER; 10481 10482 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 10483 &ipr_trace_attr); 10484 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj, 10485 &ipr_dump_attr); 10486 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj, 10487 &ipr_ioa_async_err_log); 10488 scsi_remove_host(ioa_cfg->host); 10489 10490 __ipr_remove(pdev); 10491 10492 LEAVE; 10493 } 10494 10495 /** 10496 * ipr_probe - Adapter hot plug add entry point 10497 * 10498 * Return value: 10499 * 0 on success / non-zero on failure 10500 **/ 10501 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) 10502 { 10503 struct ipr_ioa_cfg *ioa_cfg; 10504 unsigned long flags; 10505 int rc, i; 10506 10507 rc = ipr_probe_ioa(pdev, dev_id); 10508 10509 if (rc) 10510 return rc; 10511 10512 ioa_cfg = pci_get_drvdata(pdev); 10513 rc = ipr_probe_ioa_part2(ioa_cfg); 10514 10515 if (rc) { 10516 __ipr_remove(pdev); 10517 return rc; 10518 } 10519 10520 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 10521 10522 if (rc) { 10523 __ipr_remove(pdev); 10524 return rc; 10525 } 10526 10527 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj, 10528 &ipr_trace_attr); 10529 10530 if (rc) { 10531 scsi_remove_host(ioa_cfg->host); 10532 __ipr_remove(pdev); 10533 return rc; 10534 } 10535 10536 rc = sysfs_create_bin_file(&ioa_cfg->host->shost_dev.kobj, 10537 &ipr_ioa_async_err_log); 10538 10539 if (rc) { 10540 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj, 10541 &ipr_dump_attr); 10542 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 10543 &ipr_trace_attr); 10544 scsi_remove_host(ioa_cfg->host); 10545 __ipr_remove(pdev); 10546 return rc; 10547 } 10548 10549 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj, 10550 &ipr_dump_attr); 10551 10552 if (rc) { 10553 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj, 10554 &ipr_ioa_async_err_log); 10555 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 10556 &ipr_trace_attr); 10557 scsi_remove_host(ioa_cfg->host); 10558 __ipr_remove(pdev); 10559 return rc; 10560 } 10561 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 10562 ioa_cfg->scan_enabled = 1; 10563 schedule_work(&ioa_cfg->work_q); 10564 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 10565 10566 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight; 10567 10568 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 10569 for (i = 1; i < ioa_cfg->hrrq_num; i++) { 10570 irq_poll_init(&ioa_cfg->hrrq[i].iopoll, 10571 ioa_cfg->iopoll_weight, ipr_iopoll); 10572 } 10573 } 10574 10575 scsi_scan_host(ioa_cfg->host); 10576 10577 return 0; 10578 } 10579 10580 /** 10581 * ipr_shutdown - Shutdown handler. 10582 * @pdev: pci device struct 10583 * 10584 * This function is invoked upon system shutdown/reboot. It will issue 10585 * an adapter shutdown to the adapter to flush the write cache. 10586 * 10587 * Return value: 10588 * none 10589 **/ 10590 static void ipr_shutdown(struct pci_dev *pdev) 10591 { 10592 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 10593 unsigned long lock_flags = 0; 10594 enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL; 10595 int i; 10596 10597 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10598 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 10599 ioa_cfg->iopoll_weight = 0; 10600 for (i = 1; i < ioa_cfg->hrrq_num; i++) 10601 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll); 10602 } 10603 10604 while (ioa_cfg->in_reset_reload) { 10605 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10606 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 10607 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10608 } 10609 10610 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) 10611 shutdown_type = IPR_SHUTDOWN_QUIESCE; 10612 10613 ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type); 10614 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10615 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 10616 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) { 10617 ipr_free_irqs(ioa_cfg); 10618 pci_disable_device(ioa_cfg->pdev); 10619 } 10620 } 10621 10622 static struct pci_device_id ipr_pci_table[] = { 10623 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 10624 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 }, 10625 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 10626 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 }, 10627 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 10628 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 }, 10629 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 10630 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 }, 10631 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 10632 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 }, 10633 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 10634 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 }, 10635 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 10636 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 }, 10637 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 10638 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 10639 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10640 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 10641 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 10642 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 10643 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 10644 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10645 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 10646 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 10647 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10648 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 10649 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 10650 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 10651 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 10652 IPR_USE_LONG_TRANSOP_TIMEOUT}, 10653 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 10654 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 10655 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10656 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 10657 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 10658 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10659 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 10660 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 }, 10661 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 10662 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 }, 10663 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 10664 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 10665 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET }, 10666 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 10667 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 }, 10668 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 10669 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 }, 10670 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 10671 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 10672 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10673 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 10674 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 10675 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10676 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10677 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 }, 10678 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10679 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 }, 10680 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10681 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 }, 10682 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10683 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 }, 10684 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10685 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 }, 10686 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10687 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 }, 10688 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10689 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 }, 10690 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10691 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 }, 10692 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10693 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 }, 10694 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10695 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 }, 10696 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10697 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 }, 10698 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10699 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 }, 10700 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10701 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 }, 10702 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10703 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 }, 10704 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10705 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 }, 10706 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10707 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 }, 10708 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10709 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 }, 10710 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10711 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 }, 10712 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10713 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 }, 10714 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10715 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 }, 10716 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10717 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 }, 10718 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10719 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 }, 10720 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10721 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 }, 10722 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10723 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 }, 10724 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10725 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 }, 10726 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10727 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 }, 10728 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, 10729 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580A, 0, 0, 0 }, 10730 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, 10731 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580B, 0, 0, 0 }, 10732 { } 10733 }; 10734 MODULE_DEVICE_TABLE(pci, ipr_pci_table); 10735 10736 static const struct pci_error_handlers ipr_err_handler = { 10737 .error_detected = ipr_pci_error_detected, 10738 .mmio_enabled = ipr_pci_mmio_enabled, 10739 .slot_reset = ipr_pci_slot_reset, 10740 }; 10741 10742 static struct pci_driver ipr_driver = { 10743 .name = IPR_NAME, 10744 .id_table = ipr_pci_table, 10745 .probe = ipr_probe, 10746 .remove = ipr_remove, 10747 .shutdown = ipr_shutdown, 10748 .err_handler = &ipr_err_handler, 10749 }; 10750 10751 /** 10752 * ipr_halt_done - Shutdown prepare completion 10753 * 10754 * Return value: 10755 * none 10756 **/ 10757 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd) 10758 { 10759 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 10760 } 10761 10762 /** 10763 * ipr_halt - Issue shutdown prepare to all adapters 10764 * 10765 * Return value: 10766 * NOTIFY_OK on success / NOTIFY_DONE on failure 10767 **/ 10768 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf) 10769 { 10770 struct ipr_cmnd *ipr_cmd; 10771 struct ipr_ioa_cfg *ioa_cfg; 10772 unsigned long flags = 0, driver_lock_flags; 10773 10774 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF) 10775 return NOTIFY_DONE; 10776 10777 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); 10778 10779 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) { 10780 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 10781 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds || 10782 (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) { 10783 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 10784 continue; 10785 } 10786 10787 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 10788 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 10789 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 10790 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 10791 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 10792 10793 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 10794 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 10795 } 10796 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); 10797 10798 return NOTIFY_OK; 10799 } 10800 10801 static struct notifier_block ipr_notifier = { 10802 ipr_halt, NULL, 0 10803 }; 10804 10805 /** 10806 * ipr_init - Module entry point 10807 * 10808 * Return value: 10809 * 0 on success / negative value on failure 10810 **/ 10811 static int __init ipr_init(void) 10812 { 10813 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 10814 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 10815 10816 register_reboot_notifier(&ipr_notifier); 10817 return pci_register_driver(&ipr_driver); 10818 } 10819 10820 /** 10821 * ipr_exit - Module unload 10822 * 10823 * Module unload entry point. 10824 * 10825 * Return value: 10826 * none 10827 **/ 10828 static void __exit ipr_exit(void) 10829 { 10830 unregister_reboot_notifier(&ipr_notifier); 10831 pci_unregister_driver(&ipr_driver); 10832 } 10833 10834 module_init(ipr_init); 10835 module_exit(ipr_exit); 10836