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->scsi_unblock) { 3355 ioa_cfg->scsi_unblock = 0; 3356 ioa_cfg->scsi_blocked = 0; 3357 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3358 scsi_unblock_requests(ioa_cfg->host); 3359 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3360 if (ioa_cfg->scsi_blocked) 3361 scsi_block_requests(ioa_cfg->host); 3362 } 3363 3364 if (!ioa_cfg->scan_enabled) { 3365 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3366 return; 3367 } 3368 3369 restart: 3370 do { 3371 did_work = 0; 3372 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) { 3373 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3374 return; 3375 } 3376 3377 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3378 if (res->del_from_ml && res->sdev) { 3379 did_work = 1; 3380 sdev = res->sdev; 3381 if (!scsi_device_get(sdev)) { 3382 if (!res->add_to_ml) 3383 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 3384 else 3385 res->del_from_ml = 0; 3386 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3387 scsi_remove_device(sdev); 3388 scsi_device_put(sdev); 3389 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3390 } 3391 break; 3392 } 3393 } 3394 } while (did_work); 3395 3396 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3397 if (res->add_to_ml) { 3398 bus = res->bus; 3399 target = res->target; 3400 lun = res->lun; 3401 res->add_to_ml = 0; 3402 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3403 scsi_add_device(ioa_cfg->host, bus, target, lun); 3404 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3405 goto restart; 3406 } 3407 } 3408 3409 ioa_cfg->scan_done = 1; 3410 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3411 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE); 3412 LEAVE; 3413 } 3414 3415 #ifdef CONFIG_SCSI_IPR_TRACE 3416 /** 3417 * ipr_read_trace - Dump the adapter trace 3418 * @filp: open sysfs file 3419 * @kobj: kobject struct 3420 * @bin_attr: bin_attribute struct 3421 * @buf: buffer 3422 * @off: offset 3423 * @count: buffer size 3424 * 3425 * Return value: 3426 * number of bytes printed to buffer 3427 **/ 3428 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj, 3429 struct bin_attribute *bin_attr, 3430 char *buf, loff_t off, size_t count) 3431 { 3432 struct device *dev = container_of(kobj, struct device, kobj); 3433 struct Scsi_Host *shost = class_to_shost(dev); 3434 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3435 unsigned long lock_flags = 0; 3436 ssize_t ret; 3437 3438 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3439 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace, 3440 IPR_TRACE_SIZE); 3441 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3442 3443 return ret; 3444 } 3445 3446 static struct bin_attribute ipr_trace_attr = { 3447 .attr = { 3448 .name = "trace", 3449 .mode = S_IRUGO, 3450 }, 3451 .size = 0, 3452 .read = ipr_read_trace, 3453 }; 3454 #endif 3455 3456 /** 3457 * ipr_show_fw_version - Show the firmware version 3458 * @dev: class device struct 3459 * @buf: buffer 3460 * 3461 * Return value: 3462 * number of bytes printed to buffer 3463 **/ 3464 static ssize_t ipr_show_fw_version(struct device *dev, 3465 struct device_attribute *attr, char *buf) 3466 { 3467 struct Scsi_Host *shost = class_to_shost(dev); 3468 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3469 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 3470 unsigned long lock_flags = 0; 3471 int len; 3472 3473 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3474 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 3475 ucode_vpd->major_release, ucode_vpd->card_type, 3476 ucode_vpd->minor_release[0], 3477 ucode_vpd->minor_release[1]); 3478 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3479 return len; 3480 } 3481 3482 static struct device_attribute ipr_fw_version_attr = { 3483 .attr = { 3484 .name = "fw_version", 3485 .mode = S_IRUGO, 3486 }, 3487 .show = ipr_show_fw_version, 3488 }; 3489 3490 /** 3491 * ipr_show_log_level - Show the adapter's error logging level 3492 * @dev: class device struct 3493 * @buf: buffer 3494 * 3495 * Return value: 3496 * number of bytes printed to buffer 3497 **/ 3498 static ssize_t ipr_show_log_level(struct device *dev, 3499 struct device_attribute *attr, char *buf) 3500 { 3501 struct Scsi_Host *shost = class_to_shost(dev); 3502 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3503 unsigned long lock_flags = 0; 3504 int len; 3505 3506 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3507 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 3508 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3509 return len; 3510 } 3511 3512 /** 3513 * ipr_store_log_level - Change the adapter's error logging level 3514 * @dev: class device struct 3515 * @buf: buffer 3516 * 3517 * Return value: 3518 * number of bytes printed to buffer 3519 **/ 3520 static ssize_t ipr_store_log_level(struct device *dev, 3521 struct device_attribute *attr, 3522 const char *buf, size_t count) 3523 { 3524 struct Scsi_Host *shost = class_to_shost(dev); 3525 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3526 unsigned long lock_flags = 0; 3527 3528 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3529 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 3530 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3531 return strlen(buf); 3532 } 3533 3534 static struct device_attribute ipr_log_level_attr = { 3535 .attr = { 3536 .name = "log_level", 3537 .mode = S_IRUGO | S_IWUSR, 3538 }, 3539 .show = ipr_show_log_level, 3540 .store = ipr_store_log_level 3541 }; 3542 3543 /** 3544 * ipr_store_diagnostics - IOA Diagnostics interface 3545 * @dev: device struct 3546 * @buf: buffer 3547 * @count: buffer size 3548 * 3549 * This function will reset the adapter and wait a reasonable 3550 * amount of time for any errors that the adapter might log. 3551 * 3552 * Return value: 3553 * count on success / other on failure 3554 **/ 3555 static ssize_t ipr_store_diagnostics(struct device *dev, 3556 struct device_attribute *attr, 3557 const char *buf, size_t count) 3558 { 3559 struct Scsi_Host *shost = class_to_shost(dev); 3560 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3561 unsigned long lock_flags = 0; 3562 int rc = count; 3563 3564 if (!capable(CAP_SYS_ADMIN)) 3565 return -EACCES; 3566 3567 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3568 while (ioa_cfg->in_reset_reload) { 3569 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3570 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3571 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3572 } 3573 3574 ioa_cfg->errors_logged = 0; 3575 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3576 3577 if (ioa_cfg->in_reset_reload) { 3578 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3579 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3580 3581 /* Wait for a second for any errors to be logged */ 3582 msleep(1000); 3583 } else { 3584 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3585 return -EIO; 3586 } 3587 3588 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3589 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 3590 rc = -EIO; 3591 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3592 3593 return rc; 3594 } 3595 3596 static struct device_attribute ipr_diagnostics_attr = { 3597 .attr = { 3598 .name = "run_diagnostics", 3599 .mode = S_IWUSR, 3600 }, 3601 .store = ipr_store_diagnostics 3602 }; 3603 3604 /** 3605 * ipr_show_adapter_state - Show the adapter's state 3606 * @class_dev: device struct 3607 * @buf: buffer 3608 * 3609 * Return value: 3610 * number of bytes printed to buffer 3611 **/ 3612 static ssize_t ipr_show_adapter_state(struct device *dev, 3613 struct device_attribute *attr, char *buf) 3614 { 3615 struct Scsi_Host *shost = class_to_shost(dev); 3616 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3617 unsigned long lock_flags = 0; 3618 int len; 3619 3620 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3621 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 3622 len = snprintf(buf, PAGE_SIZE, "offline\n"); 3623 else 3624 len = snprintf(buf, PAGE_SIZE, "online\n"); 3625 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3626 return len; 3627 } 3628 3629 /** 3630 * ipr_store_adapter_state - Change adapter state 3631 * @dev: device struct 3632 * @buf: buffer 3633 * @count: buffer size 3634 * 3635 * This function will change the adapter's state. 3636 * 3637 * Return value: 3638 * count on success / other on failure 3639 **/ 3640 static ssize_t ipr_store_adapter_state(struct device *dev, 3641 struct device_attribute *attr, 3642 const char *buf, size_t count) 3643 { 3644 struct Scsi_Host *shost = class_to_shost(dev); 3645 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3646 unsigned long lock_flags; 3647 int result = count, i; 3648 3649 if (!capable(CAP_SYS_ADMIN)) 3650 return -EACCES; 3651 3652 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3653 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && 3654 !strncmp(buf, "online", 6)) { 3655 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 3656 spin_lock(&ioa_cfg->hrrq[i]._lock); 3657 ioa_cfg->hrrq[i].ioa_is_dead = 0; 3658 spin_unlock(&ioa_cfg->hrrq[i]._lock); 3659 } 3660 wmb(); 3661 ioa_cfg->reset_retries = 0; 3662 ioa_cfg->in_ioa_bringdown = 0; 3663 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3664 } 3665 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3666 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3667 3668 return result; 3669 } 3670 3671 static struct device_attribute ipr_ioa_state_attr = { 3672 .attr = { 3673 .name = "online_state", 3674 .mode = S_IRUGO | S_IWUSR, 3675 }, 3676 .show = ipr_show_adapter_state, 3677 .store = ipr_store_adapter_state 3678 }; 3679 3680 /** 3681 * ipr_store_reset_adapter - Reset the adapter 3682 * @dev: device struct 3683 * @buf: buffer 3684 * @count: buffer size 3685 * 3686 * This function will reset the adapter. 3687 * 3688 * Return value: 3689 * count on success / other on failure 3690 **/ 3691 static ssize_t ipr_store_reset_adapter(struct device *dev, 3692 struct device_attribute *attr, 3693 const char *buf, size_t count) 3694 { 3695 struct Scsi_Host *shost = class_to_shost(dev); 3696 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3697 unsigned long lock_flags; 3698 int result = count; 3699 3700 if (!capable(CAP_SYS_ADMIN)) 3701 return -EACCES; 3702 3703 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3704 if (!ioa_cfg->in_reset_reload) 3705 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3706 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3707 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3708 3709 return result; 3710 } 3711 3712 static struct device_attribute ipr_ioa_reset_attr = { 3713 .attr = { 3714 .name = "reset_host", 3715 .mode = S_IWUSR, 3716 }, 3717 .store = ipr_store_reset_adapter 3718 }; 3719 3720 static int ipr_iopoll(struct irq_poll *iop, int budget); 3721 /** 3722 * ipr_show_iopoll_weight - Show ipr polling mode 3723 * @dev: class device struct 3724 * @buf: buffer 3725 * 3726 * Return value: 3727 * number of bytes printed to buffer 3728 **/ 3729 static ssize_t ipr_show_iopoll_weight(struct device *dev, 3730 struct device_attribute *attr, char *buf) 3731 { 3732 struct Scsi_Host *shost = class_to_shost(dev); 3733 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3734 unsigned long lock_flags = 0; 3735 int len; 3736 3737 spin_lock_irqsave(shost->host_lock, lock_flags); 3738 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight); 3739 spin_unlock_irqrestore(shost->host_lock, lock_flags); 3740 3741 return len; 3742 } 3743 3744 /** 3745 * ipr_store_iopoll_weight - Change the adapter's polling mode 3746 * @dev: class device struct 3747 * @buf: buffer 3748 * 3749 * Return value: 3750 * number of bytes printed to buffer 3751 **/ 3752 static ssize_t ipr_store_iopoll_weight(struct device *dev, 3753 struct device_attribute *attr, 3754 const char *buf, size_t count) 3755 { 3756 struct Scsi_Host *shost = class_to_shost(dev); 3757 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3758 unsigned long user_iopoll_weight; 3759 unsigned long lock_flags = 0; 3760 int i; 3761 3762 if (!ioa_cfg->sis64) { 3763 dev_info(&ioa_cfg->pdev->dev, "irq_poll not supported on this adapter\n"); 3764 return -EINVAL; 3765 } 3766 if (kstrtoul(buf, 10, &user_iopoll_weight)) 3767 return -EINVAL; 3768 3769 if (user_iopoll_weight > 256) { 3770 dev_info(&ioa_cfg->pdev->dev, "Invalid irq_poll weight. It must be less than 256\n"); 3771 return -EINVAL; 3772 } 3773 3774 if (user_iopoll_weight == ioa_cfg->iopoll_weight) { 3775 dev_info(&ioa_cfg->pdev->dev, "Current irq_poll weight has the same weight\n"); 3776 return strlen(buf); 3777 } 3778 3779 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 3780 for (i = 1; i < ioa_cfg->hrrq_num; i++) 3781 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll); 3782 } 3783 3784 spin_lock_irqsave(shost->host_lock, lock_flags); 3785 ioa_cfg->iopoll_weight = user_iopoll_weight; 3786 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 3787 for (i = 1; i < ioa_cfg->hrrq_num; i++) { 3788 irq_poll_init(&ioa_cfg->hrrq[i].iopoll, 3789 ioa_cfg->iopoll_weight, ipr_iopoll); 3790 } 3791 } 3792 spin_unlock_irqrestore(shost->host_lock, lock_flags); 3793 3794 return strlen(buf); 3795 } 3796 3797 static struct device_attribute ipr_iopoll_weight_attr = { 3798 .attr = { 3799 .name = "iopoll_weight", 3800 .mode = S_IRUGO | S_IWUSR, 3801 }, 3802 .show = ipr_show_iopoll_weight, 3803 .store = ipr_store_iopoll_weight 3804 }; 3805 3806 /** 3807 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 3808 * @buf_len: buffer length 3809 * 3810 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 3811 * list to use for microcode download 3812 * 3813 * Return value: 3814 * pointer to sglist / NULL on failure 3815 **/ 3816 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 3817 { 3818 int sg_size, order, bsize_elem, num_elem, i, j; 3819 struct ipr_sglist *sglist; 3820 struct scatterlist *scatterlist; 3821 struct page *page; 3822 3823 /* Get the minimum size per scatter/gather element */ 3824 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 3825 3826 /* Get the actual size per element */ 3827 order = get_order(sg_size); 3828 3829 /* Determine the actual number of bytes per element */ 3830 bsize_elem = PAGE_SIZE * (1 << order); 3831 3832 /* Determine the actual number of sg entries needed */ 3833 if (buf_len % bsize_elem) 3834 num_elem = (buf_len / bsize_elem) + 1; 3835 else 3836 num_elem = buf_len / bsize_elem; 3837 3838 /* Allocate a scatter/gather list for the DMA */ 3839 sglist = kzalloc(sizeof(struct ipr_sglist) + 3840 (sizeof(struct scatterlist) * (num_elem - 1)), 3841 GFP_KERNEL); 3842 3843 if (sglist == NULL) { 3844 ipr_trace; 3845 return NULL; 3846 } 3847 3848 scatterlist = sglist->scatterlist; 3849 sg_init_table(scatterlist, num_elem); 3850 3851 sglist->order = order; 3852 sglist->num_sg = num_elem; 3853 3854 /* Allocate a bunch of sg elements */ 3855 for (i = 0; i < num_elem; i++) { 3856 page = alloc_pages(GFP_KERNEL, order); 3857 if (!page) { 3858 ipr_trace; 3859 3860 /* Free up what we already allocated */ 3861 for (j = i - 1; j >= 0; j--) 3862 __free_pages(sg_page(&scatterlist[j]), order); 3863 kfree(sglist); 3864 return NULL; 3865 } 3866 3867 sg_set_page(&scatterlist[i], page, 0, 0); 3868 } 3869 3870 return sglist; 3871 } 3872 3873 /** 3874 * ipr_free_ucode_buffer - Frees a microcode download buffer 3875 * @p_dnld: scatter/gather list pointer 3876 * 3877 * Free a DMA'able ucode download buffer previously allocated with 3878 * ipr_alloc_ucode_buffer 3879 * 3880 * Return value: 3881 * nothing 3882 **/ 3883 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 3884 { 3885 int i; 3886 3887 for (i = 0; i < sglist->num_sg; i++) 3888 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order); 3889 3890 kfree(sglist); 3891 } 3892 3893 /** 3894 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 3895 * @sglist: scatter/gather list pointer 3896 * @buffer: buffer pointer 3897 * @len: buffer length 3898 * 3899 * Copy a microcode image from a user buffer into a buffer allocated by 3900 * ipr_alloc_ucode_buffer 3901 * 3902 * Return value: 3903 * 0 on success / other on failure 3904 **/ 3905 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 3906 u8 *buffer, u32 len) 3907 { 3908 int bsize_elem, i, result = 0; 3909 struct scatterlist *scatterlist; 3910 void *kaddr; 3911 3912 /* Determine the actual number of bytes per element */ 3913 bsize_elem = PAGE_SIZE * (1 << sglist->order); 3914 3915 scatterlist = sglist->scatterlist; 3916 3917 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { 3918 struct page *page = sg_page(&scatterlist[i]); 3919 3920 kaddr = kmap(page); 3921 memcpy(kaddr, buffer, bsize_elem); 3922 kunmap(page); 3923 3924 scatterlist[i].length = bsize_elem; 3925 3926 if (result != 0) { 3927 ipr_trace; 3928 return result; 3929 } 3930 } 3931 3932 if (len % bsize_elem) { 3933 struct page *page = sg_page(&scatterlist[i]); 3934 3935 kaddr = kmap(page); 3936 memcpy(kaddr, buffer, len % bsize_elem); 3937 kunmap(page); 3938 3939 scatterlist[i].length = len % bsize_elem; 3940 } 3941 3942 sglist->buffer_len = len; 3943 return result; 3944 } 3945 3946 /** 3947 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL 3948 * @ipr_cmd: ipr command struct 3949 * @sglist: scatter/gather list 3950 * 3951 * Builds a microcode download IOA data list (IOADL). 3952 * 3953 **/ 3954 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd, 3955 struct ipr_sglist *sglist) 3956 { 3957 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3958 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 3959 struct scatterlist *scatterlist = sglist->scatterlist; 3960 int i; 3961 3962 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 3963 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3964 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 3965 3966 ioarcb->ioadl_len = 3967 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 3968 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3969 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE); 3970 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i])); 3971 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i])); 3972 } 3973 3974 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3975 } 3976 3977 /** 3978 * ipr_build_ucode_ioadl - Build a microcode download IOADL 3979 * @ipr_cmd: ipr command struct 3980 * @sglist: scatter/gather list 3981 * 3982 * Builds a microcode download IOA data list (IOADL). 3983 * 3984 **/ 3985 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, 3986 struct ipr_sglist *sglist) 3987 { 3988 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3989 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 3990 struct scatterlist *scatterlist = sglist->scatterlist; 3991 int i; 3992 3993 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 3994 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3995 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 3996 3997 ioarcb->ioadl_len = 3998 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 3999 4000 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 4001 ioadl[i].flags_and_data_len = 4002 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); 4003 ioadl[i].address = 4004 cpu_to_be32(sg_dma_address(&scatterlist[i])); 4005 } 4006 4007 ioadl[i-1].flags_and_data_len |= 4008 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 4009 } 4010 4011 /** 4012 * ipr_update_ioa_ucode - Update IOA's microcode 4013 * @ioa_cfg: ioa config struct 4014 * @sglist: scatter/gather list 4015 * 4016 * Initiate an adapter reset to update the IOA's microcode 4017 * 4018 * Return value: 4019 * 0 on success / -EIO on failure 4020 **/ 4021 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, 4022 struct ipr_sglist *sglist) 4023 { 4024 unsigned long lock_flags; 4025 4026 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4027 while (ioa_cfg->in_reset_reload) { 4028 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4029 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4030 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4031 } 4032 4033 if (ioa_cfg->ucode_sglist) { 4034 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4035 dev_err(&ioa_cfg->pdev->dev, 4036 "Microcode download already in progress\n"); 4037 return -EIO; 4038 } 4039 4040 sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev, 4041 sglist->scatterlist, sglist->num_sg, 4042 DMA_TO_DEVICE); 4043 4044 if (!sglist->num_dma_sg) { 4045 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4046 dev_err(&ioa_cfg->pdev->dev, 4047 "Failed to map microcode download buffer!\n"); 4048 return -EIO; 4049 } 4050 4051 ioa_cfg->ucode_sglist = sglist; 4052 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 4053 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4054 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4055 4056 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4057 ioa_cfg->ucode_sglist = NULL; 4058 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4059 return 0; 4060 } 4061 4062 /** 4063 * ipr_store_update_fw - Update the firmware on the adapter 4064 * @class_dev: device struct 4065 * @buf: buffer 4066 * @count: buffer size 4067 * 4068 * This function will update the firmware on the adapter. 4069 * 4070 * Return value: 4071 * count on success / other on failure 4072 **/ 4073 static ssize_t ipr_store_update_fw(struct device *dev, 4074 struct device_attribute *attr, 4075 const char *buf, size_t count) 4076 { 4077 struct Scsi_Host *shost = class_to_shost(dev); 4078 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4079 struct ipr_ucode_image_header *image_hdr; 4080 const struct firmware *fw_entry; 4081 struct ipr_sglist *sglist; 4082 char fname[100]; 4083 char *src; 4084 char *endline; 4085 int result, dnld_size; 4086 4087 if (!capable(CAP_SYS_ADMIN)) 4088 return -EACCES; 4089 4090 snprintf(fname, sizeof(fname), "%s", buf); 4091 4092 endline = strchr(fname, '\n'); 4093 if (endline) 4094 *endline = '\0'; 4095 4096 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 4097 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 4098 return -EIO; 4099 } 4100 4101 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 4102 4103 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 4104 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 4105 sglist = ipr_alloc_ucode_buffer(dnld_size); 4106 4107 if (!sglist) { 4108 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 4109 release_firmware(fw_entry); 4110 return -ENOMEM; 4111 } 4112 4113 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 4114 4115 if (result) { 4116 dev_err(&ioa_cfg->pdev->dev, 4117 "Microcode buffer copy to DMA buffer failed\n"); 4118 goto out; 4119 } 4120 4121 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n"); 4122 4123 result = ipr_update_ioa_ucode(ioa_cfg, sglist); 4124 4125 if (!result) 4126 result = count; 4127 out: 4128 ipr_free_ucode_buffer(sglist); 4129 release_firmware(fw_entry); 4130 return result; 4131 } 4132 4133 static struct device_attribute ipr_update_fw_attr = { 4134 .attr = { 4135 .name = "update_fw", 4136 .mode = S_IWUSR, 4137 }, 4138 .store = ipr_store_update_fw 4139 }; 4140 4141 /** 4142 * ipr_show_fw_type - Show the adapter's firmware type. 4143 * @dev: class device struct 4144 * @buf: buffer 4145 * 4146 * Return value: 4147 * number of bytes printed to buffer 4148 **/ 4149 static ssize_t ipr_show_fw_type(struct device *dev, 4150 struct device_attribute *attr, char *buf) 4151 { 4152 struct Scsi_Host *shost = class_to_shost(dev); 4153 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4154 unsigned long lock_flags = 0; 4155 int len; 4156 4157 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4158 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64); 4159 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4160 return len; 4161 } 4162 4163 static struct device_attribute ipr_ioa_fw_type_attr = { 4164 .attr = { 4165 .name = "fw_type", 4166 .mode = S_IRUGO, 4167 }, 4168 .show = ipr_show_fw_type 4169 }; 4170 4171 static ssize_t ipr_read_async_err_log(struct file *filep, struct kobject *kobj, 4172 struct bin_attribute *bin_attr, char *buf, 4173 loff_t off, size_t count) 4174 { 4175 struct device *cdev = container_of(kobj, struct device, kobj); 4176 struct Scsi_Host *shost = class_to_shost(cdev); 4177 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4178 struct ipr_hostrcb *hostrcb; 4179 unsigned long lock_flags = 0; 4180 int ret; 4181 4182 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4183 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q, 4184 struct ipr_hostrcb, queue); 4185 if (!hostrcb) { 4186 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4187 return 0; 4188 } 4189 ret = memory_read_from_buffer(buf, count, &off, &hostrcb->hcam, 4190 sizeof(hostrcb->hcam)); 4191 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4192 return ret; 4193 } 4194 4195 static ssize_t ipr_next_async_err_log(struct file *filep, struct kobject *kobj, 4196 struct bin_attribute *bin_attr, char *buf, 4197 loff_t off, size_t count) 4198 { 4199 struct device *cdev = container_of(kobj, struct device, kobj); 4200 struct Scsi_Host *shost = class_to_shost(cdev); 4201 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4202 struct ipr_hostrcb *hostrcb; 4203 unsigned long lock_flags = 0; 4204 4205 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4206 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q, 4207 struct ipr_hostrcb, queue); 4208 if (!hostrcb) { 4209 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4210 return count; 4211 } 4212 4213 /* Reclaim hostrcb before exit */ 4214 list_move_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 4215 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4216 return count; 4217 } 4218 4219 static struct bin_attribute ipr_ioa_async_err_log = { 4220 .attr = { 4221 .name = "async_err_log", 4222 .mode = S_IRUGO | S_IWUSR, 4223 }, 4224 .size = 0, 4225 .read = ipr_read_async_err_log, 4226 .write = ipr_next_async_err_log 4227 }; 4228 4229 static struct device_attribute *ipr_ioa_attrs[] = { 4230 &ipr_fw_version_attr, 4231 &ipr_log_level_attr, 4232 &ipr_diagnostics_attr, 4233 &ipr_ioa_state_attr, 4234 &ipr_ioa_reset_attr, 4235 &ipr_update_fw_attr, 4236 &ipr_ioa_fw_type_attr, 4237 &ipr_iopoll_weight_attr, 4238 NULL, 4239 }; 4240 4241 #ifdef CONFIG_SCSI_IPR_DUMP 4242 /** 4243 * ipr_read_dump - Dump the adapter 4244 * @filp: open sysfs file 4245 * @kobj: kobject struct 4246 * @bin_attr: bin_attribute struct 4247 * @buf: buffer 4248 * @off: offset 4249 * @count: buffer size 4250 * 4251 * Return value: 4252 * number of bytes printed to buffer 4253 **/ 4254 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj, 4255 struct bin_attribute *bin_attr, 4256 char *buf, loff_t off, size_t count) 4257 { 4258 struct device *cdev = container_of(kobj, struct device, kobj); 4259 struct Scsi_Host *shost = class_to_shost(cdev); 4260 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4261 struct ipr_dump *dump; 4262 unsigned long lock_flags = 0; 4263 char *src; 4264 int len, sdt_end; 4265 size_t rc = count; 4266 4267 if (!capable(CAP_SYS_ADMIN)) 4268 return -EACCES; 4269 4270 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4271 dump = ioa_cfg->dump; 4272 4273 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 4274 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4275 return 0; 4276 } 4277 kref_get(&dump->kref); 4278 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4279 4280 if (off > dump->driver_dump.hdr.len) { 4281 kref_put(&dump->kref, ipr_release_dump); 4282 return 0; 4283 } 4284 4285 if (off + count > dump->driver_dump.hdr.len) { 4286 count = dump->driver_dump.hdr.len - off; 4287 rc = count; 4288 } 4289 4290 if (count && off < sizeof(dump->driver_dump)) { 4291 if (off + count > sizeof(dump->driver_dump)) 4292 len = sizeof(dump->driver_dump) - off; 4293 else 4294 len = count; 4295 src = (u8 *)&dump->driver_dump + off; 4296 memcpy(buf, src, len); 4297 buf += len; 4298 off += len; 4299 count -= len; 4300 } 4301 4302 off -= sizeof(dump->driver_dump); 4303 4304 if (ioa_cfg->sis64) 4305 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) + 4306 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) * 4307 sizeof(struct ipr_sdt_entry)); 4308 else 4309 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) + 4310 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry)); 4311 4312 if (count && off < sdt_end) { 4313 if (off + count > sdt_end) 4314 len = sdt_end - off; 4315 else 4316 len = count; 4317 src = (u8 *)&dump->ioa_dump + off; 4318 memcpy(buf, src, len); 4319 buf += len; 4320 off += len; 4321 count -= len; 4322 } 4323 4324 off -= sdt_end; 4325 4326 while (count) { 4327 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 4328 len = PAGE_ALIGN(off) - off; 4329 else 4330 len = count; 4331 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 4332 src += off & ~PAGE_MASK; 4333 memcpy(buf, src, len); 4334 buf += len; 4335 off += len; 4336 count -= len; 4337 } 4338 4339 kref_put(&dump->kref, ipr_release_dump); 4340 return rc; 4341 } 4342 4343 /** 4344 * ipr_alloc_dump - Prepare for adapter dump 4345 * @ioa_cfg: ioa config struct 4346 * 4347 * Return value: 4348 * 0 on success / other on failure 4349 **/ 4350 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 4351 { 4352 struct ipr_dump *dump; 4353 __be32 **ioa_data; 4354 unsigned long lock_flags = 0; 4355 4356 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); 4357 4358 if (!dump) { 4359 ipr_err("Dump memory allocation failed\n"); 4360 return -ENOMEM; 4361 } 4362 4363 if (ioa_cfg->sis64) 4364 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *)); 4365 else 4366 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *)); 4367 4368 if (!ioa_data) { 4369 ipr_err("Dump memory allocation failed\n"); 4370 kfree(dump); 4371 return -ENOMEM; 4372 } 4373 4374 dump->ioa_dump.ioa_data = ioa_data; 4375 4376 kref_init(&dump->kref); 4377 dump->ioa_cfg = ioa_cfg; 4378 4379 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4380 4381 if (INACTIVE != ioa_cfg->sdt_state) { 4382 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4383 vfree(dump->ioa_dump.ioa_data); 4384 kfree(dump); 4385 return 0; 4386 } 4387 4388 ioa_cfg->dump = dump; 4389 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 4390 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) { 4391 ioa_cfg->dump_taken = 1; 4392 schedule_work(&ioa_cfg->work_q); 4393 } 4394 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4395 4396 return 0; 4397 } 4398 4399 /** 4400 * ipr_free_dump - Free adapter dump memory 4401 * @ioa_cfg: ioa config struct 4402 * 4403 * Return value: 4404 * 0 on success / other on failure 4405 **/ 4406 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 4407 { 4408 struct ipr_dump *dump; 4409 unsigned long lock_flags = 0; 4410 4411 ENTER; 4412 4413 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4414 dump = ioa_cfg->dump; 4415 if (!dump) { 4416 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4417 return 0; 4418 } 4419 4420 ioa_cfg->dump = NULL; 4421 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4422 4423 kref_put(&dump->kref, ipr_release_dump); 4424 4425 LEAVE; 4426 return 0; 4427 } 4428 4429 /** 4430 * ipr_write_dump - Setup dump state of adapter 4431 * @filp: open sysfs file 4432 * @kobj: kobject struct 4433 * @bin_attr: bin_attribute struct 4434 * @buf: buffer 4435 * @off: offset 4436 * @count: buffer size 4437 * 4438 * Return value: 4439 * number of bytes printed to buffer 4440 **/ 4441 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj, 4442 struct bin_attribute *bin_attr, 4443 char *buf, loff_t off, size_t count) 4444 { 4445 struct device *cdev = container_of(kobj, struct device, kobj); 4446 struct Scsi_Host *shost = class_to_shost(cdev); 4447 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4448 int rc; 4449 4450 if (!capable(CAP_SYS_ADMIN)) 4451 return -EACCES; 4452 4453 if (buf[0] == '1') 4454 rc = ipr_alloc_dump(ioa_cfg); 4455 else if (buf[0] == '0') 4456 rc = ipr_free_dump(ioa_cfg); 4457 else 4458 return -EINVAL; 4459 4460 if (rc) 4461 return rc; 4462 else 4463 return count; 4464 } 4465 4466 static struct bin_attribute ipr_dump_attr = { 4467 .attr = { 4468 .name = "dump", 4469 .mode = S_IRUSR | S_IWUSR, 4470 }, 4471 .size = 0, 4472 .read = ipr_read_dump, 4473 .write = ipr_write_dump 4474 }; 4475 #else 4476 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 4477 #endif 4478 4479 /** 4480 * ipr_change_queue_depth - Change the device's queue depth 4481 * @sdev: scsi device struct 4482 * @qdepth: depth to set 4483 * @reason: calling context 4484 * 4485 * Return value: 4486 * actual depth set 4487 **/ 4488 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) 4489 { 4490 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4491 struct ipr_resource_entry *res; 4492 unsigned long lock_flags = 0; 4493 4494 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4495 res = (struct ipr_resource_entry *)sdev->hostdata; 4496 4497 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN) 4498 qdepth = IPR_MAX_CMD_PER_ATA_LUN; 4499 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4500 4501 scsi_change_queue_depth(sdev, qdepth); 4502 return sdev->queue_depth; 4503 } 4504 4505 /** 4506 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 4507 * @dev: device struct 4508 * @attr: device attribute structure 4509 * @buf: buffer 4510 * 4511 * Return value: 4512 * number of bytes printed to buffer 4513 **/ 4514 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) 4515 { 4516 struct scsi_device *sdev = to_scsi_device(dev); 4517 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4518 struct ipr_resource_entry *res; 4519 unsigned long lock_flags = 0; 4520 ssize_t len = -ENXIO; 4521 4522 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4523 res = (struct ipr_resource_entry *)sdev->hostdata; 4524 if (res) 4525 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle); 4526 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4527 return len; 4528 } 4529 4530 static struct device_attribute ipr_adapter_handle_attr = { 4531 .attr = { 4532 .name = "adapter_handle", 4533 .mode = S_IRUSR, 4534 }, 4535 .show = ipr_show_adapter_handle 4536 }; 4537 4538 /** 4539 * ipr_show_resource_path - Show the resource path or the resource address for 4540 * this device. 4541 * @dev: device struct 4542 * @attr: device attribute structure 4543 * @buf: buffer 4544 * 4545 * Return value: 4546 * number of bytes printed to buffer 4547 **/ 4548 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf) 4549 { 4550 struct scsi_device *sdev = to_scsi_device(dev); 4551 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4552 struct ipr_resource_entry *res; 4553 unsigned long lock_flags = 0; 4554 ssize_t len = -ENXIO; 4555 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4556 4557 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4558 res = (struct ipr_resource_entry *)sdev->hostdata; 4559 if (res && ioa_cfg->sis64) 4560 len = snprintf(buf, PAGE_SIZE, "%s\n", 4561 __ipr_format_res_path(res->res_path, buffer, 4562 sizeof(buffer))); 4563 else if (res) 4564 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no, 4565 res->bus, res->target, res->lun); 4566 4567 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4568 return len; 4569 } 4570 4571 static struct device_attribute ipr_resource_path_attr = { 4572 .attr = { 4573 .name = "resource_path", 4574 .mode = S_IRUGO, 4575 }, 4576 .show = ipr_show_resource_path 4577 }; 4578 4579 /** 4580 * ipr_show_device_id - Show the device_id for this device. 4581 * @dev: device struct 4582 * @attr: device attribute structure 4583 * @buf: buffer 4584 * 4585 * Return value: 4586 * number of bytes printed to buffer 4587 **/ 4588 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf) 4589 { 4590 struct scsi_device *sdev = to_scsi_device(dev); 4591 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4592 struct ipr_resource_entry *res; 4593 unsigned long lock_flags = 0; 4594 ssize_t len = -ENXIO; 4595 4596 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4597 res = (struct ipr_resource_entry *)sdev->hostdata; 4598 if (res && ioa_cfg->sis64) 4599 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id)); 4600 else if (res) 4601 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn); 4602 4603 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4604 return len; 4605 } 4606 4607 static struct device_attribute ipr_device_id_attr = { 4608 .attr = { 4609 .name = "device_id", 4610 .mode = S_IRUGO, 4611 }, 4612 .show = ipr_show_device_id 4613 }; 4614 4615 /** 4616 * ipr_show_resource_type - Show the resource type for this device. 4617 * @dev: device struct 4618 * @attr: device attribute structure 4619 * @buf: buffer 4620 * 4621 * Return value: 4622 * number of bytes printed to buffer 4623 **/ 4624 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf) 4625 { 4626 struct scsi_device *sdev = to_scsi_device(dev); 4627 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4628 struct ipr_resource_entry *res; 4629 unsigned long lock_flags = 0; 4630 ssize_t len = -ENXIO; 4631 4632 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4633 res = (struct ipr_resource_entry *)sdev->hostdata; 4634 4635 if (res) 4636 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type); 4637 4638 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4639 return len; 4640 } 4641 4642 static struct device_attribute ipr_resource_type_attr = { 4643 .attr = { 4644 .name = "resource_type", 4645 .mode = S_IRUGO, 4646 }, 4647 .show = ipr_show_resource_type 4648 }; 4649 4650 /** 4651 * ipr_show_raw_mode - Show the adapter's raw mode 4652 * @dev: class device struct 4653 * @buf: buffer 4654 * 4655 * Return value: 4656 * number of bytes printed to buffer 4657 **/ 4658 static ssize_t ipr_show_raw_mode(struct device *dev, 4659 struct device_attribute *attr, char *buf) 4660 { 4661 struct scsi_device *sdev = to_scsi_device(dev); 4662 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4663 struct ipr_resource_entry *res; 4664 unsigned long lock_flags = 0; 4665 ssize_t len; 4666 4667 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4668 res = (struct ipr_resource_entry *)sdev->hostdata; 4669 if (res) 4670 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode); 4671 else 4672 len = -ENXIO; 4673 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4674 return len; 4675 } 4676 4677 /** 4678 * ipr_store_raw_mode - Change the adapter's raw mode 4679 * @dev: class device struct 4680 * @buf: buffer 4681 * 4682 * Return value: 4683 * number of bytes printed to buffer 4684 **/ 4685 static ssize_t ipr_store_raw_mode(struct device *dev, 4686 struct device_attribute *attr, 4687 const char *buf, size_t count) 4688 { 4689 struct scsi_device *sdev = to_scsi_device(dev); 4690 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4691 struct ipr_resource_entry *res; 4692 unsigned long lock_flags = 0; 4693 ssize_t len; 4694 4695 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4696 res = (struct ipr_resource_entry *)sdev->hostdata; 4697 if (res) { 4698 if (ipr_is_af_dasd_device(res)) { 4699 res->raw_mode = simple_strtoul(buf, NULL, 10); 4700 len = strlen(buf); 4701 if (res->sdev) 4702 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n", 4703 res->raw_mode ? "enabled" : "disabled"); 4704 } else 4705 len = -EINVAL; 4706 } else 4707 len = -ENXIO; 4708 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4709 return len; 4710 } 4711 4712 static struct device_attribute ipr_raw_mode_attr = { 4713 .attr = { 4714 .name = "raw_mode", 4715 .mode = S_IRUGO | S_IWUSR, 4716 }, 4717 .show = ipr_show_raw_mode, 4718 .store = ipr_store_raw_mode 4719 }; 4720 4721 static struct device_attribute *ipr_dev_attrs[] = { 4722 &ipr_adapter_handle_attr, 4723 &ipr_resource_path_attr, 4724 &ipr_device_id_attr, 4725 &ipr_resource_type_attr, 4726 &ipr_raw_mode_attr, 4727 NULL, 4728 }; 4729 4730 /** 4731 * ipr_biosparam - Return the HSC mapping 4732 * @sdev: scsi device struct 4733 * @block_device: block device pointer 4734 * @capacity: capacity of the device 4735 * @parm: Array containing returned HSC values. 4736 * 4737 * This function generates the HSC parms that fdisk uses. 4738 * We want to make sure we return something that places partitions 4739 * on 4k boundaries for best performance with the IOA. 4740 * 4741 * Return value: 4742 * 0 on success 4743 **/ 4744 static int ipr_biosparam(struct scsi_device *sdev, 4745 struct block_device *block_device, 4746 sector_t capacity, int *parm) 4747 { 4748 int heads, sectors; 4749 sector_t cylinders; 4750 4751 heads = 128; 4752 sectors = 32; 4753 4754 cylinders = capacity; 4755 sector_div(cylinders, (128 * 32)); 4756 4757 /* return result */ 4758 parm[0] = heads; 4759 parm[1] = sectors; 4760 parm[2] = cylinders; 4761 4762 return 0; 4763 } 4764 4765 /** 4766 * ipr_find_starget - Find target based on bus/target. 4767 * @starget: scsi target struct 4768 * 4769 * Return value: 4770 * resource entry pointer if found / NULL if not found 4771 **/ 4772 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget) 4773 { 4774 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4775 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4776 struct ipr_resource_entry *res; 4777 4778 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4779 if ((res->bus == starget->channel) && 4780 (res->target == starget->id)) { 4781 return res; 4782 } 4783 } 4784 4785 return NULL; 4786 } 4787 4788 static struct ata_port_info sata_port_info; 4789 4790 /** 4791 * ipr_target_alloc - Prepare for commands to a SCSI target 4792 * @starget: scsi target struct 4793 * 4794 * If the device is a SATA device, this function allocates an 4795 * ATA port with libata, else it does nothing. 4796 * 4797 * Return value: 4798 * 0 on success / non-0 on failure 4799 **/ 4800 static int ipr_target_alloc(struct scsi_target *starget) 4801 { 4802 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4803 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4804 struct ipr_sata_port *sata_port; 4805 struct ata_port *ap; 4806 struct ipr_resource_entry *res; 4807 unsigned long lock_flags; 4808 4809 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4810 res = ipr_find_starget(starget); 4811 starget->hostdata = NULL; 4812 4813 if (res && ipr_is_gata(res)) { 4814 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4815 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL); 4816 if (!sata_port) 4817 return -ENOMEM; 4818 4819 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost); 4820 if (ap) { 4821 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4822 sata_port->ioa_cfg = ioa_cfg; 4823 sata_port->ap = ap; 4824 sata_port->res = res; 4825 4826 res->sata_port = sata_port; 4827 ap->private_data = sata_port; 4828 starget->hostdata = sata_port; 4829 } else { 4830 kfree(sata_port); 4831 return -ENOMEM; 4832 } 4833 } 4834 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4835 4836 return 0; 4837 } 4838 4839 /** 4840 * ipr_target_destroy - Destroy a SCSI target 4841 * @starget: scsi target struct 4842 * 4843 * If the device was a SATA device, this function frees the libata 4844 * ATA port, else it does nothing. 4845 * 4846 **/ 4847 static void ipr_target_destroy(struct scsi_target *starget) 4848 { 4849 struct ipr_sata_port *sata_port = starget->hostdata; 4850 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4851 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4852 4853 if (ioa_cfg->sis64) { 4854 if (!ipr_find_starget(starget)) { 4855 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS) 4856 clear_bit(starget->id, ioa_cfg->array_ids); 4857 else if (starget->channel == IPR_VSET_VIRTUAL_BUS) 4858 clear_bit(starget->id, ioa_cfg->vset_ids); 4859 else if (starget->channel == 0) 4860 clear_bit(starget->id, ioa_cfg->target_ids); 4861 } 4862 } 4863 4864 if (sata_port) { 4865 starget->hostdata = NULL; 4866 ata_sas_port_destroy(sata_port->ap); 4867 kfree(sata_port); 4868 } 4869 } 4870 4871 /** 4872 * ipr_find_sdev - Find device based on bus/target/lun. 4873 * @sdev: scsi device struct 4874 * 4875 * Return value: 4876 * resource entry pointer if found / NULL if not found 4877 **/ 4878 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev) 4879 { 4880 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4881 struct ipr_resource_entry *res; 4882 4883 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4884 if ((res->bus == sdev->channel) && 4885 (res->target == sdev->id) && 4886 (res->lun == sdev->lun)) 4887 return res; 4888 } 4889 4890 return NULL; 4891 } 4892 4893 /** 4894 * ipr_slave_destroy - Unconfigure a SCSI device 4895 * @sdev: scsi device struct 4896 * 4897 * Return value: 4898 * nothing 4899 **/ 4900 static void ipr_slave_destroy(struct scsi_device *sdev) 4901 { 4902 struct ipr_resource_entry *res; 4903 struct ipr_ioa_cfg *ioa_cfg; 4904 unsigned long lock_flags = 0; 4905 4906 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4907 4908 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4909 res = (struct ipr_resource_entry *) sdev->hostdata; 4910 if (res) { 4911 if (res->sata_port) 4912 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE; 4913 sdev->hostdata = NULL; 4914 res->sdev = NULL; 4915 res->sata_port = NULL; 4916 } 4917 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4918 } 4919 4920 /** 4921 * ipr_slave_configure - Configure a SCSI device 4922 * @sdev: scsi device struct 4923 * 4924 * This function configures the specified scsi device. 4925 * 4926 * Return value: 4927 * 0 on success 4928 **/ 4929 static int ipr_slave_configure(struct scsi_device *sdev) 4930 { 4931 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4932 struct ipr_resource_entry *res; 4933 struct ata_port *ap = NULL; 4934 unsigned long lock_flags = 0; 4935 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4936 4937 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4938 res = sdev->hostdata; 4939 if (res) { 4940 if (ipr_is_af_dasd_device(res)) 4941 sdev->type = TYPE_RAID; 4942 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { 4943 sdev->scsi_level = 4; 4944 sdev->no_uld_attach = 1; 4945 } 4946 if (ipr_is_vset_device(res)) { 4947 sdev->scsi_level = SCSI_SPC_3; 4948 sdev->no_report_opcodes = 1; 4949 blk_queue_rq_timeout(sdev->request_queue, 4950 IPR_VSET_RW_TIMEOUT); 4951 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); 4952 } 4953 if (ipr_is_gata(res) && res->sata_port) 4954 ap = res->sata_port->ap; 4955 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4956 4957 if (ap) { 4958 scsi_change_queue_depth(sdev, IPR_MAX_CMD_PER_ATA_LUN); 4959 ata_sas_slave_configure(sdev, ap); 4960 } 4961 4962 if (ioa_cfg->sis64) 4963 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n", 4964 ipr_format_res_path(ioa_cfg, 4965 res->res_path, buffer, sizeof(buffer))); 4966 return 0; 4967 } 4968 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4969 return 0; 4970 } 4971 4972 /** 4973 * ipr_ata_slave_alloc - Prepare for commands to a SATA device 4974 * @sdev: scsi device struct 4975 * 4976 * This function initializes an ATA port so that future commands 4977 * sent through queuecommand will work. 4978 * 4979 * Return value: 4980 * 0 on success 4981 **/ 4982 static int ipr_ata_slave_alloc(struct scsi_device *sdev) 4983 { 4984 struct ipr_sata_port *sata_port = NULL; 4985 int rc = -ENXIO; 4986 4987 ENTER; 4988 if (sdev->sdev_target) 4989 sata_port = sdev->sdev_target->hostdata; 4990 if (sata_port) { 4991 rc = ata_sas_port_init(sata_port->ap); 4992 if (rc == 0) 4993 rc = ata_sas_sync_probe(sata_port->ap); 4994 } 4995 4996 if (rc) 4997 ipr_slave_destroy(sdev); 4998 4999 LEAVE; 5000 return rc; 5001 } 5002 5003 /** 5004 * ipr_slave_alloc - Prepare for commands to a device. 5005 * @sdev: scsi device struct 5006 * 5007 * This function saves a pointer to the resource entry 5008 * in the scsi device struct if the device exists. We 5009 * can then use this pointer in ipr_queuecommand when 5010 * handling new commands. 5011 * 5012 * Return value: 5013 * 0 on success / -ENXIO if device does not exist 5014 **/ 5015 static int ipr_slave_alloc(struct scsi_device *sdev) 5016 { 5017 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 5018 struct ipr_resource_entry *res; 5019 unsigned long lock_flags; 5020 int rc = -ENXIO; 5021 5022 sdev->hostdata = NULL; 5023 5024 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5025 5026 res = ipr_find_sdev(sdev); 5027 if (res) { 5028 res->sdev = sdev; 5029 res->add_to_ml = 0; 5030 res->in_erp = 0; 5031 sdev->hostdata = res; 5032 if (!ipr_is_naca_model(res)) 5033 res->needs_sync_complete = 1; 5034 rc = 0; 5035 if (ipr_is_gata(res)) { 5036 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5037 return ipr_ata_slave_alloc(sdev); 5038 } 5039 } 5040 5041 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5042 5043 return rc; 5044 } 5045 5046 /** 5047 * ipr_match_lun - Match function for specified LUN 5048 * @ipr_cmd: ipr command struct 5049 * @device: device to match (sdev) 5050 * 5051 * Returns: 5052 * 1 if command matches sdev / 0 if command does not match sdev 5053 **/ 5054 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device) 5055 { 5056 if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device) 5057 return 1; 5058 return 0; 5059 } 5060 5061 /** 5062 * ipr_cmnd_is_free - Check if a command is free or not 5063 * @ipr_cmd ipr command struct 5064 * 5065 * Returns: 5066 * true / false 5067 **/ 5068 static bool ipr_cmnd_is_free(struct ipr_cmnd *ipr_cmd) 5069 { 5070 struct ipr_cmnd *loop_cmd; 5071 5072 list_for_each_entry(loop_cmd, &ipr_cmd->hrrq->hrrq_free_q, queue) { 5073 if (loop_cmd == ipr_cmd) 5074 return true; 5075 } 5076 5077 return false; 5078 } 5079 5080 /** 5081 * ipr_match_res - Match function for specified resource entry 5082 * @ipr_cmd: ipr command struct 5083 * @resource: resource entry to match 5084 * 5085 * Returns: 5086 * 1 if command matches sdev / 0 if command does not match sdev 5087 **/ 5088 static int ipr_match_res(struct ipr_cmnd *ipr_cmd, void *resource) 5089 { 5090 struct ipr_resource_entry *res = resource; 5091 5092 if (res && ipr_cmd->ioarcb.res_handle == res->res_handle) 5093 return 1; 5094 return 0; 5095 } 5096 5097 /** 5098 * ipr_wait_for_ops - Wait for matching commands to complete 5099 * @ipr_cmd: ipr command struct 5100 * @device: device to match (sdev) 5101 * @match: match function to use 5102 * 5103 * Returns: 5104 * SUCCESS / FAILED 5105 **/ 5106 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device, 5107 int (*match)(struct ipr_cmnd *, void *)) 5108 { 5109 struct ipr_cmnd *ipr_cmd; 5110 int wait, i; 5111 unsigned long flags; 5112 struct ipr_hrr_queue *hrrq; 5113 signed long timeout = IPR_ABORT_TASK_TIMEOUT; 5114 DECLARE_COMPLETION_ONSTACK(comp); 5115 5116 ENTER; 5117 do { 5118 wait = 0; 5119 5120 for_each_hrrq(hrrq, ioa_cfg) { 5121 spin_lock_irqsave(hrrq->lock, flags); 5122 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 5123 ipr_cmd = ioa_cfg->ipr_cmnd_list[i]; 5124 if (!ipr_cmnd_is_free(ipr_cmd)) { 5125 if (match(ipr_cmd, device)) { 5126 ipr_cmd->eh_comp = ∁ 5127 wait++; 5128 } 5129 } 5130 } 5131 spin_unlock_irqrestore(hrrq->lock, flags); 5132 } 5133 5134 if (wait) { 5135 timeout = wait_for_completion_timeout(&comp, timeout); 5136 5137 if (!timeout) { 5138 wait = 0; 5139 5140 for_each_hrrq(hrrq, ioa_cfg) { 5141 spin_lock_irqsave(hrrq->lock, flags); 5142 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 5143 ipr_cmd = ioa_cfg->ipr_cmnd_list[i]; 5144 if (!ipr_cmnd_is_free(ipr_cmd)) { 5145 if (match(ipr_cmd, device)) { 5146 ipr_cmd->eh_comp = NULL; 5147 wait++; 5148 } 5149 } 5150 } 5151 spin_unlock_irqrestore(hrrq->lock, flags); 5152 } 5153 5154 if (wait) 5155 dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n"); 5156 LEAVE; 5157 return wait ? FAILED : SUCCESS; 5158 } 5159 } 5160 } while (wait); 5161 5162 LEAVE; 5163 return SUCCESS; 5164 } 5165 5166 static int ipr_eh_host_reset(struct scsi_cmnd *cmd) 5167 { 5168 struct ipr_ioa_cfg *ioa_cfg; 5169 unsigned long lock_flags = 0; 5170 int rc = SUCCESS; 5171 5172 ENTER; 5173 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata; 5174 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5175 5176 if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) { 5177 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV); 5178 dev_err(&ioa_cfg->pdev->dev, 5179 "Adapter being reset as a result of error recovery.\n"); 5180 5181 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 5182 ioa_cfg->sdt_state = GET_DUMP; 5183 } 5184 5185 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5186 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5187 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5188 5189 /* If we got hit with a host reset while we were already resetting 5190 the adapter for some reason, and the reset failed. */ 5191 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) { 5192 ipr_trace; 5193 rc = FAILED; 5194 } 5195 5196 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5197 LEAVE; 5198 return rc; 5199 } 5200 5201 /** 5202 * ipr_device_reset - Reset the device 5203 * @ioa_cfg: ioa config struct 5204 * @res: resource entry struct 5205 * 5206 * This function issues a device reset to the affected device. 5207 * If the device is a SCSI device, a LUN reset will be sent 5208 * to the device first. If that does not work, a target reset 5209 * will be sent. If the device is a SATA device, a PHY reset will 5210 * be sent. 5211 * 5212 * Return value: 5213 * 0 on success / non-zero on failure 5214 **/ 5215 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, 5216 struct ipr_resource_entry *res) 5217 { 5218 struct ipr_cmnd *ipr_cmd; 5219 struct ipr_ioarcb *ioarcb; 5220 struct ipr_cmd_pkt *cmd_pkt; 5221 struct ipr_ioarcb_ata_regs *regs; 5222 u32 ioasc; 5223 5224 ENTER; 5225 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5226 ioarcb = &ipr_cmd->ioarcb; 5227 cmd_pkt = &ioarcb->cmd_pkt; 5228 5229 if (ipr_cmd->ioa_cfg->sis64) { 5230 regs = &ipr_cmd->i.ata_ioadl.regs; 5231 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb)); 5232 } else 5233 regs = &ioarcb->u.add_data.u.regs; 5234 5235 ioarcb->res_handle = res->res_handle; 5236 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5237 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 5238 if (ipr_is_gata(res)) { 5239 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET; 5240 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags)); 5241 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 5242 } 5243 5244 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 5245 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5246 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 5247 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) { 5248 if (ipr_cmd->ioa_cfg->sis64) 5249 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata, 5250 sizeof(struct ipr_ioasa_gata)); 5251 else 5252 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata, 5253 sizeof(struct ipr_ioasa_gata)); 5254 } 5255 5256 LEAVE; 5257 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0; 5258 } 5259 5260 /** 5261 * ipr_sata_reset - Reset the SATA port 5262 * @link: SATA link to reset 5263 * @classes: class of the attached device 5264 * 5265 * This function issues a SATA phy reset to the affected ATA link. 5266 * 5267 * Return value: 5268 * 0 on success / non-zero on failure 5269 **/ 5270 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes, 5271 unsigned long deadline) 5272 { 5273 struct ipr_sata_port *sata_port = link->ap->private_data; 5274 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5275 struct ipr_resource_entry *res; 5276 unsigned long lock_flags = 0; 5277 int rc = -ENXIO, ret; 5278 5279 ENTER; 5280 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5281 while (ioa_cfg->in_reset_reload) { 5282 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5283 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5284 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5285 } 5286 5287 res = sata_port->res; 5288 if (res) { 5289 rc = ipr_device_reset(ioa_cfg, res); 5290 *classes = res->ata_class; 5291 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5292 5293 ret = ipr_wait_for_ops(ioa_cfg, res, ipr_match_res); 5294 if (ret != SUCCESS) { 5295 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5296 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV); 5297 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5298 5299 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5300 } 5301 } else 5302 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5303 5304 LEAVE; 5305 return rc; 5306 } 5307 5308 /** 5309 * ipr_eh_dev_reset - Reset the device 5310 * @scsi_cmd: scsi command struct 5311 * 5312 * This function issues a device reset to the affected device. 5313 * A LUN reset will be sent to the device first. If that does 5314 * not work, a target reset will be sent. 5315 * 5316 * Return value: 5317 * SUCCESS / FAILED 5318 **/ 5319 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd) 5320 { 5321 struct ipr_cmnd *ipr_cmd; 5322 struct ipr_ioa_cfg *ioa_cfg; 5323 struct ipr_resource_entry *res; 5324 struct ata_port *ap; 5325 int rc = 0, i; 5326 struct ipr_hrr_queue *hrrq; 5327 5328 ENTER; 5329 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 5330 res = scsi_cmd->device->hostdata; 5331 5332 /* 5333 * If we are currently going through reset/reload, return failed. This will force the 5334 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 5335 * reset to complete 5336 */ 5337 if (ioa_cfg->in_reset_reload) 5338 return FAILED; 5339 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 5340 return FAILED; 5341 5342 for_each_hrrq(hrrq, ioa_cfg) { 5343 spin_lock(&hrrq->_lock); 5344 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 5345 ipr_cmd = ioa_cfg->ipr_cmnd_list[i]; 5346 5347 if (ipr_cmd->ioarcb.res_handle == res->res_handle) { 5348 if (!ipr_cmd->qc) 5349 continue; 5350 if (ipr_cmnd_is_free(ipr_cmd)) 5351 continue; 5352 5353 ipr_cmd->done = ipr_sata_eh_done; 5354 if (!(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) { 5355 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT; 5356 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED; 5357 } 5358 } 5359 } 5360 spin_unlock(&hrrq->_lock); 5361 } 5362 res->resetting_device = 1; 5363 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); 5364 5365 if (ipr_is_gata(res) && res->sata_port) { 5366 ap = res->sata_port->ap; 5367 spin_unlock_irq(scsi_cmd->device->host->host_lock); 5368 ata_std_error_handler(ap); 5369 spin_lock_irq(scsi_cmd->device->host->host_lock); 5370 } else 5371 rc = ipr_device_reset(ioa_cfg, res); 5372 res->resetting_device = 0; 5373 res->reset_occurred = 1; 5374 5375 LEAVE; 5376 return rc ? FAILED : SUCCESS; 5377 } 5378 5379 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd) 5380 { 5381 int rc; 5382 struct ipr_ioa_cfg *ioa_cfg; 5383 struct ipr_resource_entry *res; 5384 5385 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata; 5386 res = cmd->device->hostdata; 5387 5388 if (!res) 5389 return FAILED; 5390 5391 spin_lock_irq(cmd->device->host->host_lock); 5392 rc = __ipr_eh_dev_reset(cmd); 5393 spin_unlock_irq(cmd->device->host->host_lock); 5394 5395 if (rc == SUCCESS) { 5396 if (ipr_is_gata(res) && res->sata_port) 5397 rc = ipr_wait_for_ops(ioa_cfg, res, ipr_match_res); 5398 else 5399 rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun); 5400 } 5401 5402 return rc; 5403 } 5404 5405 /** 5406 * ipr_bus_reset_done - Op done function for bus reset. 5407 * @ipr_cmd: ipr command struct 5408 * 5409 * This function is the op done function for a bus reset 5410 * 5411 * Return value: 5412 * none 5413 **/ 5414 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 5415 { 5416 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5417 struct ipr_resource_entry *res; 5418 5419 ENTER; 5420 if (!ioa_cfg->sis64) 5421 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 5422 if (res->res_handle == ipr_cmd->ioarcb.res_handle) { 5423 scsi_report_bus_reset(ioa_cfg->host, res->bus); 5424 break; 5425 } 5426 } 5427 5428 /* 5429 * If abort has not completed, indicate the reset has, else call the 5430 * abort's done function to wake the sleeping eh thread 5431 */ 5432 if (ipr_cmd->sibling->sibling) 5433 ipr_cmd->sibling->sibling = NULL; 5434 else 5435 ipr_cmd->sibling->done(ipr_cmd->sibling); 5436 5437 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 5438 LEAVE; 5439 } 5440 5441 /** 5442 * ipr_abort_timeout - An abort task has timed out 5443 * @ipr_cmd: ipr command struct 5444 * 5445 * This function handles when an abort task times out. If this 5446 * happens we issue a bus reset since we have resources tied 5447 * up that must be freed before returning to the midlayer. 5448 * 5449 * Return value: 5450 * none 5451 **/ 5452 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 5453 { 5454 struct ipr_cmnd *reset_cmd; 5455 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5456 struct ipr_cmd_pkt *cmd_pkt; 5457 unsigned long lock_flags = 0; 5458 5459 ENTER; 5460 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5461 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 5462 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5463 return; 5464 } 5465 5466 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n"); 5467 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5468 ipr_cmd->sibling = reset_cmd; 5469 reset_cmd->sibling = ipr_cmd; 5470 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 5471 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 5472 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5473 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 5474 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 5475 5476 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 5477 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5478 LEAVE; 5479 } 5480 5481 /** 5482 * ipr_cancel_op - Cancel specified op 5483 * @scsi_cmd: scsi command struct 5484 * 5485 * This function cancels specified op. 5486 * 5487 * Return value: 5488 * SUCCESS / FAILED 5489 **/ 5490 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd) 5491 { 5492 struct ipr_cmnd *ipr_cmd; 5493 struct ipr_ioa_cfg *ioa_cfg; 5494 struct ipr_resource_entry *res; 5495 struct ipr_cmd_pkt *cmd_pkt; 5496 u32 ioasc, int_reg; 5497 int i, op_found = 0; 5498 struct ipr_hrr_queue *hrrq; 5499 5500 ENTER; 5501 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 5502 res = scsi_cmd->device->hostdata; 5503 5504 /* If we are currently going through reset/reload, return failed. 5505 * This will force the mid-layer to call ipr_eh_host_reset, 5506 * which will then go to sleep and wait for the reset to complete 5507 */ 5508 if (ioa_cfg->in_reset_reload || 5509 ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 5510 return FAILED; 5511 if (!res) 5512 return FAILED; 5513 5514 /* 5515 * If we are aborting a timed out op, chances are that the timeout was caused 5516 * by a still not detected EEH error. In such cases, reading a register will 5517 * trigger the EEH recovery infrastructure. 5518 */ 5519 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 5520 5521 if (!ipr_is_gscsi(res)) 5522 return FAILED; 5523 5524 for_each_hrrq(hrrq, ioa_cfg) { 5525 spin_lock(&hrrq->_lock); 5526 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) { 5527 if (ioa_cfg->ipr_cmnd_list[i]->scsi_cmd == scsi_cmd) { 5528 if (!ipr_cmnd_is_free(ioa_cfg->ipr_cmnd_list[i])) { 5529 op_found = 1; 5530 break; 5531 } 5532 } 5533 } 5534 spin_unlock(&hrrq->_lock); 5535 } 5536 5537 if (!op_found) 5538 return SUCCESS; 5539 5540 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5541 ipr_cmd->ioarcb.res_handle = res->res_handle; 5542 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 5543 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5544 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 5545 ipr_cmd->u.sdev = scsi_cmd->device; 5546 5547 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n", 5548 scsi_cmd->cmnd[0]); 5549 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 5550 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5551 5552 /* 5553 * If the abort task timed out and we sent a bus reset, we will get 5554 * one the following responses to the abort 5555 */ 5556 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 5557 ioasc = 0; 5558 ipr_trace; 5559 } 5560 5561 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 5562 if (!ipr_is_naca_model(res)) 5563 res->needs_sync_complete = 1; 5564 5565 LEAVE; 5566 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS; 5567 } 5568 5569 /** 5570 * ipr_eh_abort - Abort a single op 5571 * @scsi_cmd: scsi command struct 5572 * 5573 * Return value: 5574 * 0 if scan in progress / 1 if scan is complete 5575 **/ 5576 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time) 5577 { 5578 unsigned long lock_flags; 5579 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 5580 int rc = 0; 5581 5582 spin_lock_irqsave(shost->host_lock, lock_flags); 5583 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done) 5584 rc = 1; 5585 if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2)) 5586 rc = 1; 5587 spin_unlock_irqrestore(shost->host_lock, lock_flags); 5588 return rc; 5589 } 5590 5591 /** 5592 * ipr_eh_host_reset - Reset the host adapter 5593 * @scsi_cmd: scsi command struct 5594 * 5595 * Return value: 5596 * SUCCESS / FAILED 5597 **/ 5598 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd) 5599 { 5600 unsigned long flags; 5601 int rc; 5602 struct ipr_ioa_cfg *ioa_cfg; 5603 5604 ENTER; 5605 5606 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 5607 5608 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 5609 rc = ipr_cancel_op(scsi_cmd); 5610 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 5611 5612 if (rc == SUCCESS) 5613 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun); 5614 LEAVE; 5615 return rc; 5616 } 5617 5618 /** 5619 * ipr_handle_other_interrupt - Handle "other" interrupts 5620 * @ioa_cfg: ioa config struct 5621 * @int_reg: interrupt register 5622 * 5623 * Return value: 5624 * IRQ_NONE / IRQ_HANDLED 5625 **/ 5626 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 5627 u32 int_reg) 5628 { 5629 irqreturn_t rc = IRQ_HANDLED; 5630 u32 int_mask_reg; 5631 5632 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 5633 int_reg &= ~int_mask_reg; 5634 5635 /* If an interrupt on the adapter did not occur, ignore it. 5636 * Or in the case of SIS 64, check for a stage change interrupt. 5637 */ 5638 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) { 5639 if (ioa_cfg->sis64) { 5640 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 5641 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 5642 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) { 5643 5644 /* clear stage change */ 5645 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg); 5646 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 5647 list_del(&ioa_cfg->reset_cmd->queue); 5648 del_timer(&ioa_cfg->reset_cmd->timer); 5649 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 5650 return IRQ_HANDLED; 5651 } 5652 } 5653 5654 return IRQ_NONE; 5655 } 5656 5657 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 5658 /* Mask the interrupt */ 5659 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 5660 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 5661 5662 list_del(&ioa_cfg->reset_cmd->queue); 5663 del_timer(&ioa_cfg->reset_cmd->timer); 5664 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 5665 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) { 5666 if (ioa_cfg->clear_isr) { 5667 if (ipr_debug && printk_ratelimit()) 5668 dev_err(&ioa_cfg->pdev->dev, 5669 "Spurious interrupt detected. 0x%08X\n", int_reg); 5670 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32); 5671 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5672 return IRQ_NONE; 5673 } 5674 } else { 5675 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 5676 ioa_cfg->ioa_unit_checked = 1; 5677 else if (int_reg & IPR_PCII_NO_HOST_RRQ) 5678 dev_err(&ioa_cfg->pdev->dev, 5679 "No Host RRQ. 0x%08X\n", int_reg); 5680 else 5681 dev_err(&ioa_cfg->pdev->dev, 5682 "Permanent IOA failure. 0x%08X\n", int_reg); 5683 5684 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 5685 ioa_cfg->sdt_state = GET_DUMP; 5686 5687 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 5688 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5689 } 5690 5691 return rc; 5692 } 5693 5694 /** 5695 * ipr_isr_eh - Interrupt service routine error handler 5696 * @ioa_cfg: ioa config struct 5697 * @msg: message to log 5698 * 5699 * Return value: 5700 * none 5701 **/ 5702 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number) 5703 { 5704 ioa_cfg->errors_logged++; 5705 dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number); 5706 5707 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 5708 ioa_cfg->sdt_state = GET_DUMP; 5709 5710 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5711 } 5712 5713 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget, 5714 struct list_head *doneq) 5715 { 5716 u32 ioasc; 5717 u16 cmd_index; 5718 struct ipr_cmnd *ipr_cmd; 5719 struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg; 5720 int num_hrrq = 0; 5721 5722 /* If interrupts are disabled, ignore the interrupt */ 5723 if (!hrr_queue->allow_interrupts) 5724 return 0; 5725 5726 while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5727 hrr_queue->toggle_bit) { 5728 5729 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) & 5730 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> 5731 IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 5732 5733 if (unlikely(cmd_index > hrr_queue->max_cmd_id || 5734 cmd_index < hrr_queue->min_cmd_id)) { 5735 ipr_isr_eh(ioa_cfg, 5736 "Invalid response handle from IOA: ", 5737 cmd_index); 5738 break; 5739 } 5740 5741 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 5742 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5743 5744 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 5745 5746 list_move_tail(&ipr_cmd->queue, doneq); 5747 5748 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) { 5749 hrr_queue->hrrq_curr++; 5750 } else { 5751 hrr_queue->hrrq_curr = hrr_queue->hrrq_start; 5752 hrr_queue->toggle_bit ^= 1u; 5753 } 5754 num_hrrq++; 5755 if (budget > 0 && num_hrrq >= budget) 5756 break; 5757 } 5758 5759 return num_hrrq; 5760 } 5761 5762 static int ipr_iopoll(struct irq_poll *iop, int budget) 5763 { 5764 struct ipr_ioa_cfg *ioa_cfg; 5765 struct ipr_hrr_queue *hrrq; 5766 struct ipr_cmnd *ipr_cmd, *temp; 5767 unsigned long hrrq_flags; 5768 int completed_ops; 5769 LIST_HEAD(doneq); 5770 5771 hrrq = container_of(iop, struct ipr_hrr_queue, iopoll); 5772 ioa_cfg = hrrq->ioa_cfg; 5773 5774 spin_lock_irqsave(hrrq->lock, hrrq_flags); 5775 completed_ops = ipr_process_hrrq(hrrq, budget, &doneq); 5776 5777 if (completed_ops < budget) 5778 irq_poll_complete(iop); 5779 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5780 5781 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) { 5782 list_del(&ipr_cmd->queue); 5783 del_timer(&ipr_cmd->timer); 5784 ipr_cmd->fast_done(ipr_cmd); 5785 } 5786 5787 return completed_ops; 5788 } 5789 5790 /** 5791 * ipr_isr - Interrupt service routine 5792 * @irq: irq number 5793 * @devp: pointer to ioa config struct 5794 * 5795 * Return value: 5796 * IRQ_NONE / IRQ_HANDLED 5797 **/ 5798 static irqreturn_t ipr_isr(int irq, void *devp) 5799 { 5800 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp; 5801 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg; 5802 unsigned long hrrq_flags = 0; 5803 u32 int_reg = 0; 5804 int num_hrrq = 0; 5805 int irq_none = 0; 5806 struct ipr_cmnd *ipr_cmd, *temp; 5807 irqreturn_t rc = IRQ_NONE; 5808 LIST_HEAD(doneq); 5809 5810 spin_lock_irqsave(hrrq->lock, hrrq_flags); 5811 /* If interrupts are disabled, ignore the interrupt */ 5812 if (!hrrq->allow_interrupts) { 5813 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5814 return IRQ_NONE; 5815 } 5816 5817 while (1) { 5818 if (ipr_process_hrrq(hrrq, -1, &doneq)) { 5819 rc = IRQ_HANDLED; 5820 5821 if (!ioa_cfg->clear_isr) 5822 break; 5823 5824 /* Clear the PCI interrupt */ 5825 num_hrrq = 0; 5826 do { 5827 writel(IPR_PCII_HRRQ_UPDATED, 5828 ioa_cfg->regs.clr_interrupt_reg32); 5829 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5830 } while (int_reg & IPR_PCII_HRRQ_UPDATED && 5831 num_hrrq++ < IPR_MAX_HRRQ_RETRIES); 5832 5833 } else if (rc == IRQ_NONE && irq_none == 0) { 5834 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5835 irq_none++; 5836 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES && 5837 int_reg & IPR_PCII_HRRQ_UPDATED) { 5838 ipr_isr_eh(ioa_cfg, 5839 "Error clearing HRRQ: ", num_hrrq); 5840 rc = IRQ_HANDLED; 5841 break; 5842 } else 5843 break; 5844 } 5845 5846 if (unlikely(rc == IRQ_NONE)) 5847 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 5848 5849 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5850 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) { 5851 list_del(&ipr_cmd->queue); 5852 del_timer(&ipr_cmd->timer); 5853 ipr_cmd->fast_done(ipr_cmd); 5854 } 5855 return rc; 5856 } 5857 5858 /** 5859 * ipr_isr_mhrrq - Interrupt service routine 5860 * @irq: irq number 5861 * @devp: pointer to ioa config struct 5862 * 5863 * Return value: 5864 * IRQ_NONE / IRQ_HANDLED 5865 **/ 5866 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp) 5867 { 5868 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp; 5869 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg; 5870 unsigned long hrrq_flags = 0; 5871 struct ipr_cmnd *ipr_cmd, *temp; 5872 irqreturn_t rc = IRQ_NONE; 5873 LIST_HEAD(doneq); 5874 5875 spin_lock_irqsave(hrrq->lock, hrrq_flags); 5876 5877 /* If interrupts are disabled, ignore the interrupt */ 5878 if (!hrrq->allow_interrupts) { 5879 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5880 return IRQ_NONE; 5881 } 5882 5883 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 5884 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5885 hrrq->toggle_bit) { 5886 irq_poll_sched(&hrrq->iopoll); 5887 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5888 return IRQ_HANDLED; 5889 } 5890 } else { 5891 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5892 hrrq->toggle_bit) 5893 5894 if (ipr_process_hrrq(hrrq, -1, &doneq)) 5895 rc = IRQ_HANDLED; 5896 } 5897 5898 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 5899 5900 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) { 5901 list_del(&ipr_cmd->queue); 5902 del_timer(&ipr_cmd->timer); 5903 ipr_cmd->fast_done(ipr_cmd); 5904 } 5905 return rc; 5906 } 5907 5908 /** 5909 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer 5910 * @ioa_cfg: ioa config struct 5911 * @ipr_cmd: ipr command struct 5912 * 5913 * Return value: 5914 * 0 on success / -1 on failure 5915 **/ 5916 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg, 5917 struct ipr_cmnd *ipr_cmd) 5918 { 5919 int i, nseg; 5920 struct scatterlist *sg; 5921 u32 length; 5922 u32 ioadl_flags = 0; 5923 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5924 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5925 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 5926 5927 length = scsi_bufflen(scsi_cmd); 5928 if (!length) 5929 return 0; 5930 5931 nseg = scsi_dma_map(scsi_cmd); 5932 if (nseg < 0) { 5933 if (printk_ratelimit()) 5934 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n"); 5935 return -1; 5936 } 5937 5938 ipr_cmd->dma_use_sg = nseg; 5939 5940 ioarcb->data_transfer_length = cpu_to_be32(length); 5941 ioarcb->ioadl_len = 5942 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 5943 5944 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 5945 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5946 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5947 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) 5948 ioadl_flags = IPR_IOADL_FLAGS_READ; 5949 5950 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 5951 ioadl64[i].flags = cpu_to_be32(ioadl_flags); 5952 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg)); 5953 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg)); 5954 } 5955 5956 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5957 return 0; 5958 } 5959 5960 /** 5961 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 5962 * @ioa_cfg: ioa config struct 5963 * @ipr_cmd: ipr command struct 5964 * 5965 * Return value: 5966 * 0 on success / -1 on failure 5967 **/ 5968 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 5969 struct ipr_cmnd *ipr_cmd) 5970 { 5971 int i, nseg; 5972 struct scatterlist *sg; 5973 u32 length; 5974 u32 ioadl_flags = 0; 5975 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5976 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5977 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 5978 5979 length = scsi_bufflen(scsi_cmd); 5980 if (!length) 5981 return 0; 5982 5983 nseg = scsi_dma_map(scsi_cmd); 5984 if (nseg < 0) { 5985 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n"); 5986 return -1; 5987 } 5988 5989 ipr_cmd->dma_use_sg = nseg; 5990 5991 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 5992 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5993 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5994 ioarcb->data_transfer_length = cpu_to_be32(length); 5995 ioarcb->ioadl_len = 5996 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5997 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 5998 ioadl_flags = IPR_IOADL_FLAGS_READ; 5999 ioarcb->read_data_transfer_length = cpu_to_be32(length); 6000 ioarcb->read_ioadl_len = 6001 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 6002 } 6003 6004 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) { 6005 ioadl = ioarcb->u.add_data.u.ioadl; 6006 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) + 6007 offsetof(struct ipr_ioarcb, u.add_data)); 6008 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 6009 } 6010 6011 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 6012 ioadl[i].flags_and_data_len = 6013 cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 6014 ioadl[i].address = cpu_to_be32(sg_dma_address(sg)); 6015 } 6016 6017 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 6018 return 0; 6019 } 6020 6021 /** 6022 * __ipr_erp_done - Process completion of ERP for a device 6023 * @ipr_cmd: ipr command struct 6024 * 6025 * This function copies the sense buffer into the scsi_cmd 6026 * struct and pushes the scsi_done function. 6027 * 6028 * Return value: 6029 * nothing 6030 **/ 6031 static void __ipr_erp_done(struct ipr_cmnd *ipr_cmd) 6032 { 6033 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6034 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 6035 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6036 6037 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 6038 scsi_cmd->result |= (DID_ERROR << 16); 6039 scmd_printk(KERN_ERR, scsi_cmd, 6040 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 6041 } else { 6042 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 6043 SCSI_SENSE_BUFFERSIZE); 6044 } 6045 6046 if (res) { 6047 if (!ipr_is_naca_model(res)) 6048 res->needs_sync_complete = 1; 6049 res->in_erp = 0; 6050 } 6051 scsi_dma_unmap(ipr_cmd->scsi_cmd); 6052 scsi_cmd->scsi_done(scsi_cmd); 6053 if (ipr_cmd->eh_comp) 6054 complete(ipr_cmd->eh_comp); 6055 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6056 } 6057 6058 /** 6059 * ipr_erp_done - Process completion of ERP for a device 6060 * @ipr_cmd: ipr command struct 6061 * 6062 * This function copies the sense buffer into the scsi_cmd 6063 * struct and pushes the scsi_done function. 6064 * 6065 * Return value: 6066 * nothing 6067 **/ 6068 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 6069 { 6070 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq; 6071 unsigned long hrrq_flags; 6072 6073 spin_lock_irqsave(&hrrq->_lock, hrrq_flags); 6074 __ipr_erp_done(ipr_cmd); 6075 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags); 6076 } 6077 6078 /** 6079 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 6080 * @ipr_cmd: ipr command struct 6081 * 6082 * Return value: 6083 * none 6084 **/ 6085 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 6086 { 6087 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6088 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 6089 dma_addr_t dma_addr = ipr_cmd->dma_addr; 6090 6091 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 6092 ioarcb->data_transfer_length = 0; 6093 ioarcb->read_data_transfer_length = 0; 6094 ioarcb->ioadl_len = 0; 6095 ioarcb->read_ioadl_len = 0; 6096 ioasa->hdr.ioasc = 0; 6097 ioasa->hdr.residual_data_len = 0; 6098 6099 if (ipr_cmd->ioa_cfg->sis64) 6100 ioarcb->u.sis64_addr_data.data_ioadl_addr = 6101 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 6102 else { 6103 ioarcb->write_ioadl_addr = 6104 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 6105 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 6106 } 6107 } 6108 6109 /** 6110 * __ipr_erp_request_sense - Send request sense to a device 6111 * @ipr_cmd: ipr command struct 6112 * 6113 * This function sends a request sense to a device as a result 6114 * of a check condition. 6115 * 6116 * Return value: 6117 * nothing 6118 **/ 6119 static void __ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 6120 { 6121 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 6122 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6123 6124 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 6125 __ipr_erp_done(ipr_cmd); 6126 return; 6127 } 6128 6129 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 6130 6131 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 6132 cmd_pkt->cdb[0] = REQUEST_SENSE; 6133 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 6134 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 6135 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6136 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 6137 6138 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma, 6139 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST); 6140 6141 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 6142 IPR_REQUEST_SENSE_TIMEOUT * 2); 6143 } 6144 6145 /** 6146 * ipr_erp_request_sense - Send request sense to a device 6147 * @ipr_cmd: ipr command struct 6148 * 6149 * This function sends a request sense to a device as a result 6150 * of a check condition. 6151 * 6152 * Return value: 6153 * nothing 6154 **/ 6155 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 6156 { 6157 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq; 6158 unsigned long hrrq_flags; 6159 6160 spin_lock_irqsave(&hrrq->_lock, hrrq_flags); 6161 __ipr_erp_request_sense(ipr_cmd); 6162 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags); 6163 } 6164 6165 /** 6166 * ipr_erp_cancel_all - Send cancel all to a device 6167 * @ipr_cmd: ipr command struct 6168 * 6169 * This function sends a cancel all to a device to clear the 6170 * queue. If we are running TCQ on the device, QERR is set to 1, 6171 * which means all outstanding ops have been dropped on the floor. 6172 * Cancel all will return them to us. 6173 * 6174 * Return value: 6175 * nothing 6176 **/ 6177 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 6178 { 6179 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6180 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 6181 struct ipr_cmd_pkt *cmd_pkt; 6182 6183 res->in_erp = 1; 6184 6185 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 6186 6187 if (!scsi_cmd->device->simple_tags) { 6188 __ipr_erp_request_sense(ipr_cmd); 6189 return; 6190 } 6191 6192 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 6193 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 6194 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 6195 6196 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 6197 IPR_CANCEL_ALL_TIMEOUT); 6198 } 6199 6200 /** 6201 * ipr_dump_ioasa - Dump contents of IOASA 6202 * @ioa_cfg: ioa config struct 6203 * @ipr_cmd: ipr command struct 6204 * @res: resource entry struct 6205 * 6206 * This function is invoked by the interrupt handler when ops 6207 * fail. It will log the IOASA if appropriate. Only called 6208 * for GPDD ops. 6209 * 6210 * Return value: 6211 * none 6212 **/ 6213 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 6214 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res) 6215 { 6216 int i; 6217 u16 data_len; 6218 u32 ioasc, fd_ioasc; 6219 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 6220 __be32 *ioasa_data = (__be32 *)ioasa; 6221 int error_index; 6222 6223 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK; 6224 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK; 6225 6226 if (0 == ioasc) 6227 return; 6228 6229 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 6230 return; 6231 6232 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc) 6233 error_index = ipr_get_error(fd_ioasc); 6234 else 6235 error_index = ipr_get_error(ioasc); 6236 6237 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 6238 /* Don't log an error if the IOA already logged one */ 6239 if (ioasa->hdr.ilid != 0) 6240 return; 6241 6242 if (!ipr_is_gscsi(res)) 6243 return; 6244 6245 if (ipr_error_table[error_index].log_ioasa == 0) 6246 return; 6247 } 6248 6249 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error); 6250 6251 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len); 6252 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len) 6253 data_len = sizeof(struct ipr_ioasa64); 6254 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len) 6255 data_len = sizeof(struct ipr_ioasa); 6256 6257 ipr_err("IOASA Dump:\n"); 6258 6259 for (i = 0; i < data_len / 4; i += 4) { 6260 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 6261 be32_to_cpu(ioasa_data[i]), 6262 be32_to_cpu(ioasa_data[i+1]), 6263 be32_to_cpu(ioasa_data[i+2]), 6264 be32_to_cpu(ioasa_data[i+3])); 6265 } 6266 } 6267 6268 /** 6269 * ipr_gen_sense - Generate SCSI sense data from an IOASA 6270 * @ioasa: IOASA 6271 * @sense_buf: sense data buffer 6272 * 6273 * Return value: 6274 * none 6275 **/ 6276 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 6277 { 6278 u32 failing_lba; 6279 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 6280 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 6281 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 6282 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc); 6283 6284 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 6285 6286 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 6287 return; 6288 6289 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 6290 6291 if (ipr_is_vset_device(res) && 6292 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 6293 ioasa->u.vset.failing_lba_hi != 0) { 6294 sense_buf[0] = 0x72; 6295 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 6296 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 6297 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 6298 6299 sense_buf[7] = 12; 6300 sense_buf[8] = 0; 6301 sense_buf[9] = 0x0A; 6302 sense_buf[10] = 0x80; 6303 6304 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 6305 6306 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 6307 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 6308 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 6309 sense_buf[15] = failing_lba & 0x000000ff; 6310 6311 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 6312 6313 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 6314 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 6315 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 6316 sense_buf[19] = failing_lba & 0x000000ff; 6317 } else { 6318 sense_buf[0] = 0x70; 6319 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 6320 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 6321 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 6322 6323 /* Illegal request */ 6324 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 6325 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 6326 sense_buf[7] = 10; /* additional length */ 6327 6328 /* IOARCB was in error */ 6329 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 6330 sense_buf[15] = 0xC0; 6331 else /* Parameter data was invalid */ 6332 sense_buf[15] = 0x80; 6333 6334 sense_buf[16] = 6335 ((IPR_FIELD_POINTER_MASK & 6336 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff; 6337 sense_buf[17] = 6338 (IPR_FIELD_POINTER_MASK & 6339 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff; 6340 } else { 6341 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 6342 if (ipr_is_vset_device(res)) 6343 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 6344 else 6345 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 6346 6347 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 6348 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 6349 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 6350 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 6351 sense_buf[6] = failing_lba & 0x000000ff; 6352 } 6353 6354 sense_buf[7] = 6; /* additional length */ 6355 } 6356 } 6357 } 6358 6359 /** 6360 * ipr_get_autosense - Copy autosense data to sense buffer 6361 * @ipr_cmd: ipr command struct 6362 * 6363 * This function copies the autosense buffer to the buffer 6364 * in the scsi_cmd, if there is autosense available. 6365 * 6366 * Return value: 6367 * 1 if autosense was available / 0 if not 6368 **/ 6369 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) 6370 { 6371 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 6372 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64; 6373 6374 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0) 6375 return 0; 6376 6377 if (ipr_cmd->ioa_cfg->sis64) 6378 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data, 6379 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len), 6380 SCSI_SENSE_BUFFERSIZE)); 6381 else 6382 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, 6383 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), 6384 SCSI_SENSE_BUFFERSIZE)); 6385 return 1; 6386 } 6387 6388 /** 6389 * ipr_erp_start - Process an error response for a SCSI op 6390 * @ioa_cfg: ioa config struct 6391 * @ipr_cmd: ipr command struct 6392 * 6393 * This function determines whether or not to initiate ERP 6394 * on the affected device. 6395 * 6396 * Return value: 6397 * nothing 6398 **/ 6399 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 6400 struct ipr_cmnd *ipr_cmd) 6401 { 6402 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6403 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 6404 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6405 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK; 6406 6407 if (!res) { 6408 __ipr_scsi_eh_done(ipr_cmd); 6409 return; 6410 } 6411 6412 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS) 6413 ipr_gen_sense(ipr_cmd); 6414 6415 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 6416 6417 switch (masked_ioasc) { 6418 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 6419 if (ipr_is_naca_model(res)) 6420 scsi_cmd->result |= (DID_ABORT << 16); 6421 else 6422 scsi_cmd->result |= (DID_IMM_RETRY << 16); 6423 break; 6424 case IPR_IOASC_IR_RESOURCE_HANDLE: 6425 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: 6426 scsi_cmd->result |= (DID_NO_CONNECT << 16); 6427 break; 6428 case IPR_IOASC_HW_SEL_TIMEOUT: 6429 scsi_cmd->result |= (DID_NO_CONNECT << 16); 6430 if (!ipr_is_naca_model(res)) 6431 res->needs_sync_complete = 1; 6432 break; 6433 case IPR_IOASC_SYNC_REQUIRED: 6434 if (!res->in_erp) 6435 res->needs_sync_complete = 1; 6436 scsi_cmd->result |= (DID_IMM_RETRY << 16); 6437 break; 6438 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 6439 case IPR_IOASA_IR_DUAL_IOA_DISABLED: 6440 /* 6441 * exception: do not set DID_PASSTHROUGH on CHECK CONDITION 6442 * so SCSI mid-layer and upper layers handle it accordingly. 6443 */ 6444 if (scsi_cmd->result != SAM_STAT_CHECK_CONDITION) 6445 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 6446 break; 6447 case IPR_IOASC_BUS_WAS_RESET: 6448 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 6449 /* 6450 * Report the bus reset and ask for a retry. The device 6451 * will give CC/UA the next command. 6452 */ 6453 if (!res->resetting_device) 6454 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 6455 scsi_cmd->result |= (DID_ERROR << 16); 6456 if (!ipr_is_naca_model(res)) 6457 res->needs_sync_complete = 1; 6458 break; 6459 case IPR_IOASC_HW_DEV_BUS_STATUS: 6460 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 6461 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 6462 if (!ipr_get_autosense(ipr_cmd)) { 6463 if (!ipr_is_naca_model(res)) { 6464 ipr_erp_cancel_all(ipr_cmd); 6465 return; 6466 } 6467 } 6468 } 6469 if (!ipr_is_naca_model(res)) 6470 res->needs_sync_complete = 1; 6471 break; 6472 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 6473 break; 6474 case IPR_IOASC_IR_NON_OPTIMIZED: 6475 if (res->raw_mode) { 6476 res->raw_mode = 0; 6477 scsi_cmd->result |= (DID_IMM_RETRY << 16); 6478 } else 6479 scsi_cmd->result |= (DID_ERROR << 16); 6480 break; 6481 default: 6482 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 6483 scsi_cmd->result |= (DID_ERROR << 16); 6484 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) 6485 res->needs_sync_complete = 1; 6486 break; 6487 } 6488 6489 scsi_dma_unmap(ipr_cmd->scsi_cmd); 6490 scsi_cmd->scsi_done(scsi_cmd); 6491 if (ipr_cmd->eh_comp) 6492 complete(ipr_cmd->eh_comp); 6493 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6494 } 6495 6496 /** 6497 * ipr_scsi_done - mid-layer done function 6498 * @ipr_cmd: ipr command struct 6499 * 6500 * This function is invoked by the interrupt handler for 6501 * ops generated by the SCSI mid-layer 6502 * 6503 * Return value: 6504 * none 6505 **/ 6506 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 6507 { 6508 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6509 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 6510 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6511 unsigned long lock_flags; 6512 6513 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len)); 6514 6515 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 6516 scsi_dma_unmap(scsi_cmd); 6517 6518 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags); 6519 scsi_cmd->scsi_done(scsi_cmd); 6520 if (ipr_cmd->eh_comp) 6521 complete(ipr_cmd->eh_comp); 6522 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6523 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags); 6524 } else { 6525 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6526 spin_lock(&ipr_cmd->hrrq->_lock); 6527 ipr_erp_start(ioa_cfg, ipr_cmd); 6528 spin_unlock(&ipr_cmd->hrrq->_lock); 6529 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6530 } 6531 } 6532 6533 /** 6534 * ipr_queuecommand - Queue a mid-layer request 6535 * @shost: scsi host struct 6536 * @scsi_cmd: scsi command struct 6537 * 6538 * This function queues a request generated by the mid-layer. 6539 * 6540 * Return value: 6541 * 0 on success 6542 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 6543 * SCSI_MLQUEUE_HOST_BUSY if host is busy 6544 **/ 6545 static int ipr_queuecommand(struct Scsi_Host *shost, 6546 struct scsi_cmnd *scsi_cmd) 6547 { 6548 struct ipr_ioa_cfg *ioa_cfg; 6549 struct ipr_resource_entry *res; 6550 struct ipr_ioarcb *ioarcb; 6551 struct ipr_cmnd *ipr_cmd; 6552 unsigned long hrrq_flags, lock_flags; 6553 int rc; 6554 struct ipr_hrr_queue *hrrq; 6555 int hrrq_id; 6556 6557 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 6558 6559 scsi_cmd->result = (DID_OK << 16); 6560 res = scsi_cmd->device->hostdata; 6561 6562 if (ipr_is_gata(res) && res->sata_port) { 6563 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6564 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap); 6565 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6566 return rc; 6567 } 6568 6569 hrrq_id = ipr_get_hrrq_index(ioa_cfg); 6570 hrrq = &ioa_cfg->hrrq[hrrq_id]; 6571 6572 spin_lock_irqsave(hrrq->lock, hrrq_flags); 6573 /* 6574 * We are currently blocking all devices due to a host reset 6575 * We have told the host to stop giving us new requests, but 6576 * ERP ops don't count. FIXME 6577 */ 6578 if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) { 6579 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6580 return SCSI_MLQUEUE_HOST_BUSY; 6581 } 6582 6583 /* 6584 * FIXME - Create scsi_set_host_offline interface 6585 * and the ioa_is_dead check can be removed 6586 */ 6587 if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) { 6588 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6589 goto err_nodev; 6590 } 6591 6592 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq); 6593 if (ipr_cmd == NULL) { 6594 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6595 return SCSI_MLQUEUE_HOST_BUSY; 6596 } 6597 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6598 6599 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done); 6600 ioarcb = &ipr_cmd->ioarcb; 6601 6602 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 6603 ipr_cmd->scsi_cmd = scsi_cmd; 6604 ipr_cmd->done = ipr_scsi_eh_done; 6605 6606 if (ipr_is_gscsi(res)) { 6607 if (scsi_cmd->underflow == 0) 6608 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6609 6610 if (res->reset_occurred) { 6611 res->reset_occurred = 0; 6612 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 6613 } 6614 } 6615 6616 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 6617 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 6618 6619 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 6620 if (scsi_cmd->flags & SCMD_TAGGED) 6621 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK; 6622 else 6623 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK; 6624 } 6625 6626 if (scsi_cmd->cmnd[0] >= 0xC0 && 6627 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) { 6628 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6629 } 6630 if (res->raw_mode && ipr_is_af_dasd_device(res)) { 6631 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE; 6632 6633 if (scsi_cmd->underflow == 0) 6634 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6635 } 6636 6637 if (ioa_cfg->sis64) 6638 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd); 6639 else 6640 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 6641 6642 spin_lock_irqsave(hrrq->lock, hrrq_flags); 6643 if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) { 6644 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q); 6645 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6646 if (!rc) 6647 scsi_dma_unmap(scsi_cmd); 6648 return SCSI_MLQUEUE_HOST_BUSY; 6649 } 6650 6651 if (unlikely(hrrq->ioa_is_dead)) { 6652 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q); 6653 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6654 scsi_dma_unmap(scsi_cmd); 6655 goto err_nodev; 6656 } 6657 6658 ioarcb->res_handle = res->res_handle; 6659 if (res->needs_sync_complete) { 6660 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 6661 res->needs_sync_complete = 0; 6662 } 6663 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q); 6664 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res)); 6665 ipr_send_command(ipr_cmd); 6666 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6667 return 0; 6668 6669 err_nodev: 6670 spin_lock_irqsave(hrrq->lock, hrrq_flags); 6671 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 6672 scsi_cmd->result = (DID_NO_CONNECT << 16); 6673 scsi_cmd->scsi_done(scsi_cmd); 6674 spin_unlock_irqrestore(hrrq->lock, hrrq_flags); 6675 return 0; 6676 } 6677 6678 /** 6679 * ipr_ioctl - IOCTL handler 6680 * @sdev: scsi device struct 6681 * @cmd: IOCTL cmd 6682 * @arg: IOCTL arg 6683 * 6684 * Return value: 6685 * 0 on success / other on failure 6686 **/ 6687 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) 6688 { 6689 struct ipr_resource_entry *res; 6690 6691 res = (struct ipr_resource_entry *)sdev->hostdata; 6692 if (res && ipr_is_gata(res)) { 6693 if (cmd == HDIO_GET_IDENTITY) 6694 return -ENOTTY; 6695 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg); 6696 } 6697 6698 return -EINVAL; 6699 } 6700 6701 /** 6702 * ipr_info - Get information about the card/driver 6703 * @scsi_host: scsi host struct 6704 * 6705 * Return value: 6706 * pointer to buffer with description string 6707 **/ 6708 static const char *ipr_ioa_info(struct Scsi_Host *host) 6709 { 6710 static char buffer[512]; 6711 struct ipr_ioa_cfg *ioa_cfg; 6712 unsigned long lock_flags = 0; 6713 6714 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 6715 6716 spin_lock_irqsave(host->host_lock, lock_flags); 6717 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 6718 spin_unlock_irqrestore(host->host_lock, lock_flags); 6719 6720 return buffer; 6721 } 6722 6723 static struct scsi_host_template driver_template = { 6724 .module = THIS_MODULE, 6725 .name = "IPR", 6726 .info = ipr_ioa_info, 6727 .ioctl = ipr_ioctl, 6728 .queuecommand = ipr_queuecommand, 6729 .eh_abort_handler = ipr_eh_abort, 6730 .eh_device_reset_handler = ipr_eh_dev_reset, 6731 .eh_host_reset_handler = ipr_eh_host_reset, 6732 .slave_alloc = ipr_slave_alloc, 6733 .slave_configure = ipr_slave_configure, 6734 .slave_destroy = ipr_slave_destroy, 6735 .scan_finished = ipr_scan_finished, 6736 .target_alloc = ipr_target_alloc, 6737 .target_destroy = ipr_target_destroy, 6738 .change_queue_depth = ipr_change_queue_depth, 6739 .bios_param = ipr_biosparam, 6740 .can_queue = IPR_MAX_COMMANDS, 6741 .this_id = -1, 6742 .sg_tablesize = IPR_MAX_SGLIST, 6743 .max_sectors = IPR_IOA_MAX_SECTORS, 6744 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 6745 .use_clustering = ENABLE_CLUSTERING, 6746 .shost_attrs = ipr_ioa_attrs, 6747 .sdev_attrs = ipr_dev_attrs, 6748 .proc_name = IPR_NAME, 6749 }; 6750 6751 /** 6752 * ipr_ata_phy_reset - libata phy_reset handler 6753 * @ap: ata port to reset 6754 * 6755 **/ 6756 static void ipr_ata_phy_reset(struct ata_port *ap) 6757 { 6758 unsigned long flags; 6759 struct ipr_sata_port *sata_port = ap->private_data; 6760 struct ipr_resource_entry *res = sata_port->res; 6761 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 6762 int rc; 6763 6764 ENTER; 6765 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6766 while (ioa_cfg->in_reset_reload) { 6767 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6768 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6769 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6770 } 6771 6772 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) 6773 goto out_unlock; 6774 6775 rc = ipr_device_reset(ioa_cfg, res); 6776 6777 if (rc) { 6778 ap->link.device[0].class = ATA_DEV_NONE; 6779 goto out_unlock; 6780 } 6781 6782 ap->link.device[0].class = res->ata_class; 6783 if (ap->link.device[0].class == ATA_DEV_UNKNOWN) 6784 ap->link.device[0].class = ATA_DEV_NONE; 6785 6786 out_unlock: 6787 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6788 LEAVE; 6789 } 6790 6791 /** 6792 * ipr_ata_post_internal - Cleanup after an internal command 6793 * @qc: ATA queued command 6794 * 6795 * Return value: 6796 * none 6797 **/ 6798 static void ipr_ata_post_internal(struct ata_queued_cmd *qc) 6799 { 6800 struct ipr_sata_port *sata_port = qc->ap->private_data; 6801 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 6802 struct ipr_cmnd *ipr_cmd; 6803 struct ipr_hrr_queue *hrrq; 6804 unsigned long flags; 6805 6806 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6807 while (ioa_cfg->in_reset_reload) { 6808 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6809 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6810 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6811 } 6812 6813 for_each_hrrq(hrrq, ioa_cfg) { 6814 spin_lock(&hrrq->_lock); 6815 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) { 6816 if (ipr_cmd->qc == qc) { 6817 ipr_device_reset(ioa_cfg, sata_port->res); 6818 break; 6819 } 6820 } 6821 spin_unlock(&hrrq->_lock); 6822 } 6823 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6824 } 6825 6826 /** 6827 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure 6828 * @regs: destination 6829 * @tf: source ATA taskfile 6830 * 6831 * Return value: 6832 * none 6833 **/ 6834 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs, 6835 struct ata_taskfile *tf) 6836 { 6837 regs->feature = tf->feature; 6838 regs->nsect = tf->nsect; 6839 regs->lbal = tf->lbal; 6840 regs->lbam = tf->lbam; 6841 regs->lbah = tf->lbah; 6842 regs->device = tf->device; 6843 regs->command = tf->command; 6844 regs->hob_feature = tf->hob_feature; 6845 regs->hob_nsect = tf->hob_nsect; 6846 regs->hob_lbal = tf->hob_lbal; 6847 regs->hob_lbam = tf->hob_lbam; 6848 regs->hob_lbah = tf->hob_lbah; 6849 regs->ctl = tf->ctl; 6850 } 6851 6852 /** 6853 * ipr_sata_done - done function for SATA commands 6854 * @ipr_cmd: ipr command struct 6855 * 6856 * This function is invoked by the interrupt handler for 6857 * ops generated by the SCSI mid-layer to SATA devices 6858 * 6859 * Return value: 6860 * none 6861 **/ 6862 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd) 6863 { 6864 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6865 struct ata_queued_cmd *qc = ipr_cmd->qc; 6866 struct ipr_sata_port *sata_port = qc->ap->private_data; 6867 struct ipr_resource_entry *res = sata_port->res; 6868 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6869 6870 spin_lock(&ipr_cmd->hrrq->_lock); 6871 if (ipr_cmd->ioa_cfg->sis64) 6872 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata, 6873 sizeof(struct ipr_ioasa_gata)); 6874 else 6875 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata, 6876 sizeof(struct ipr_ioasa_gata)); 6877 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 6878 6879 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET) 6880 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target); 6881 6882 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 6883 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status); 6884 else 6885 qc->err_mask |= ac_err_mask(sata_port->ioasa.status); 6886 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 6887 spin_unlock(&ipr_cmd->hrrq->_lock); 6888 ata_qc_complete(qc); 6889 } 6890 6891 /** 6892 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list 6893 * @ipr_cmd: ipr command struct 6894 * @qc: ATA queued command 6895 * 6896 **/ 6897 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd, 6898 struct ata_queued_cmd *qc) 6899 { 6900 u32 ioadl_flags = 0; 6901 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6902 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64; 6903 struct ipr_ioadl64_desc *last_ioadl64 = NULL; 6904 int len = qc->nbytes; 6905 struct scatterlist *sg; 6906 unsigned int si; 6907 dma_addr_t dma_addr = ipr_cmd->dma_addr; 6908 6909 if (len == 0) 6910 return; 6911 6912 if (qc->dma_dir == DMA_TO_DEVICE) { 6913 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 6914 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6915 } else if (qc->dma_dir == DMA_FROM_DEVICE) 6916 ioadl_flags = IPR_IOADL_FLAGS_READ; 6917 6918 ioarcb->data_transfer_length = cpu_to_be32(len); 6919 ioarcb->ioadl_len = 6920 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 6921 ioarcb->u.sis64_addr_data.data_ioadl_addr = 6922 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64)); 6923 6924 for_each_sg(qc->sg, sg, qc->n_elem, si) { 6925 ioadl64->flags = cpu_to_be32(ioadl_flags); 6926 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg)); 6927 ioadl64->address = cpu_to_be64(sg_dma_address(sg)); 6928 6929 last_ioadl64 = ioadl64; 6930 ioadl64++; 6931 } 6932 6933 if (likely(last_ioadl64)) 6934 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 6935 } 6936 6937 /** 6938 * ipr_build_ata_ioadl - Build an ATA scatter/gather list 6939 * @ipr_cmd: ipr command struct 6940 * @qc: ATA queued command 6941 * 6942 **/ 6943 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, 6944 struct ata_queued_cmd *qc) 6945 { 6946 u32 ioadl_flags = 0; 6947 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6948 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 6949 struct ipr_ioadl_desc *last_ioadl = NULL; 6950 int len = qc->nbytes; 6951 struct scatterlist *sg; 6952 unsigned int si; 6953 6954 if (len == 0) 6955 return; 6956 6957 if (qc->dma_dir == DMA_TO_DEVICE) { 6958 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 6959 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6960 ioarcb->data_transfer_length = cpu_to_be32(len); 6961 ioarcb->ioadl_len = 6962 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 6963 } else if (qc->dma_dir == DMA_FROM_DEVICE) { 6964 ioadl_flags = IPR_IOADL_FLAGS_READ; 6965 ioarcb->read_data_transfer_length = cpu_to_be32(len); 6966 ioarcb->read_ioadl_len = 6967 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 6968 } 6969 6970 for_each_sg(qc->sg, sg, qc->n_elem, si) { 6971 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 6972 ioadl->address = cpu_to_be32(sg_dma_address(sg)); 6973 6974 last_ioadl = ioadl; 6975 ioadl++; 6976 } 6977 6978 if (likely(last_ioadl)) 6979 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 6980 } 6981 6982 /** 6983 * ipr_qc_defer - Get a free ipr_cmd 6984 * @qc: queued command 6985 * 6986 * Return value: 6987 * 0 if success 6988 **/ 6989 static int ipr_qc_defer(struct ata_queued_cmd *qc) 6990 { 6991 struct ata_port *ap = qc->ap; 6992 struct ipr_sata_port *sata_port = ap->private_data; 6993 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 6994 struct ipr_cmnd *ipr_cmd; 6995 struct ipr_hrr_queue *hrrq; 6996 int hrrq_id; 6997 6998 hrrq_id = ipr_get_hrrq_index(ioa_cfg); 6999 hrrq = &ioa_cfg->hrrq[hrrq_id]; 7000 7001 qc->lldd_task = NULL; 7002 spin_lock(&hrrq->_lock); 7003 if (unlikely(hrrq->ioa_is_dead)) { 7004 spin_unlock(&hrrq->_lock); 7005 return 0; 7006 } 7007 7008 if (unlikely(!hrrq->allow_cmds)) { 7009 spin_unlock(&hrrq->_lock); 7010 return ATA_DEFER_LINK; 7011 } 7012 7013 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq); 7014 if (ipr_cmd == NULL) { 7015 spin_unlock(&hrrq->_lock); 7016 return ATA_DEFER_LINK; 7017 } 7018 7019 qc->lldd_task = ipr_cmd; 7020 spin_unlock(&hrrq->_lock); 7021 return 0; 7022 } 7023 7024 /** 7025 * ipr_qc_issue - Issue a SATA qc to a device 7026 * @qc: queued command 7027 * 7028 * Return value: 7029 * 0 if success 7030 **/ 7031 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) 7032 { 7033 struct ata_port *ap = qc->ap; 7034 struct ipr_sata_port *sata_port = ap->private_data; 7035 struct ipr_resource_entry *res = sata_port->res; 7036 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 7037 struct ipr_cmnd *ipr_cmd; 7038 struct ipr_ioarcb *ioarcb; 7039 struct ipr_ioarcb_ata_regs *regs; 7040 7041 if (qc->lldd_task == NULL) 7042 ipr_qc_defer(qc); 7043 7044 ipr_cmd = qc->lldd_task; 7045 if (ipr_cmd == NULL) 7046 return AC_ERR_SYSTEM; 7047 7048 qc->lldd_task = NULL; 7049 spin_lock(&ipr_cmd->hrrq->_lock); 7050 if (unlikely(!ipr_cmd->hrrq->allow_cmds || 7051 ipr_cmd->hrrq->ioa_is_dead)) { 7052 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 7053 spin_unlock(&ipr_cmd->hrrq->_lock); 7054 return AC_ERR_SYSTEM; 7055 } 7056 7057 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done); 7058 ioarcb = &ipr_cmd->ioarcb; 7059 7060 if (ioa_cfg->sis64) { 7061 regs = &ipr_cmd->i.ata_ioadl.regs; 7062 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb)); 7063 } else 7064 regs = &ioarcb->u.add_data.u.regs; 7065 7066 memset(regs, 0, sizeof(*regs)); 7067 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs)); 7068 7069 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 7070 ipr_cmd->qc = qc; 7071 ipr_cmd->done = ipr_sata_done; 7072 ipr_cmd->ioarcb.res_handle = res->res_handle; 7073 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU; 7074 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 7075 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 7076 ipr_cmd->dma_use_sg = qc->n_elem; 7077 7078 if (ioa_cfg->sis64) 7079 ipr_build_ata_ioadl64(ipr_cmd, qc); 7080 else 7081 ipr_build_ata_ioadl(ipr_cmd, qc); 7082 7083 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 7084 ipr_copy_sata_tf(regs, &qc->tf); 7085 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN); 7086 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res)); 7087 7088 switch (qc->tf.protocol) { 7089 case ATA_PROT_NODATA: 7090 case ATA_PROT_PIO: 7091 break; 7092 7093 case ATA_PROT_DMA: 7094 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 7095 break; 7096 7097 case ATAPI_PROT_PIO: 7098 case ATAPI_PROT_NODATA: 7099 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 7100 break; 7101 7102 case ATAPI_PROT_DMA: 7103 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 7104 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 7105 break; 7106 7107 default: 7108 WARN_ON(1); 7109 spin_unlock(&ipr_cmd->hrrq->_lock); 7110 return AC_ERR_INVALID; 7111 } 7112 7113 ipr_send_command(ipr_cmd); 7114 spin_unlock(&ipr_cmd->hrrq->_lock); 7115 7116 return 0; 7117 } 7118 7119 /** 7120 * ipr_qc_fill_rtf - Read result TF 7121 * @qc: ATA queued command 7122 * 7123 * Return value: 7124 * true 7125 **/ 7126 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc) 7127 { 7128 struct ipr_sata_port *sata_port = qc->ap->private_data; 7129 struct ipr_ioasa_gata *g = &sata_port->ioasa; 7130 struct ata_taskfile *tf = &qc->result_tf; 7131 7132 tf->feature = g->error; 7133 tf->nsect = g->nsect; 7134 tf->lbal = g->lbal; 7135 tf->lbam = g->lbam; 7136 tf->lbah = g->lbah; 7137 tf->device = g->device; 7138 tf->command = g->status; 7139 tf->hob_nsect = g->hob_nsect; 7140 tf->hob_lbal = g->hob_lbal; 7141 tf->hob_lbam = g->hob_lbam; 7142 tf->hob_lbah = g->hob_lbah; 7143 7144 return true; 7145 } 7146 7147 static struct ata_port_operations ipr_sata_ops = { 7148 .phy_reset = ipr_ata_phy_reset, 7149 .hardreset = ipr_sata_reset, 7150 .post_internal_cmd = ipr_ata_post_internal, 7151 .qc_prep = ata_noop_qc_prep, 7152 .qc_defer = ipr_qc_defer, 7153 .qc_issue = ipr_qc_issue, 7154 .qc_fill_rtf = ipr_qc_fill_rtf, 7155 .port_start = ata_sas_port_start, 7156 .port_stop = ata_sas_port_stop 7157 }; 7158 7159 static struct ata_port_info sata_port_info = { 7160 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA | 7161 ATA_FLAG_SAS_HOST, 7162 .pio_mask = ATA_PIO4_ONLY, 7163 .mwdma_mask = ATA_MWDMA2, 7164 .udma_mask = ATA_UDMA6, 7165 .port_ops = &ipr_sata_ops 7166 }; 7167 7168 #ifdef CONFIG_PPC_PSERIES 7169 static const u16 ipr_blocked_processors[] = { 7170 PVR_NORTHSTAR, 7171 PVR_PULSAR, 7172 PVR_POWER4, 7173 PVR_ICESTAR, 7174 PVR_SSTAR, 7175 PVR_POWER4p, 7176 PVR_630, 7177 PVR_630p 7178 }; 7179 7180 /** 7181 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 7182 * @ioa_cfg: ioa cfg struct 7183 * 7184 * Adapters that use Gemstone revision < 3.1 do not work reliably on 7185 * certain pSeries hardware. This function determines if the given 7186 * adapter is in one of these confgurations or not. 7187 * 7188 * Return value: 7189 * 1 if adapter is not supported / 0 if adapter is supported 7190 **/ 7191 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 7192 { 7193 int i; 7194 7195 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) { 7196 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) { 7197 if (pvr_version_is(ipr_blocked_processors[i])) 7198 return 1; 7199 } 7200 } 7201 return 0; 7202 } 7203 #else 7204 #define ipr_invalid_adapter(ioa_cfg) 0 7205 #endif 7206 7207 /** 7208 * ipr_ioa_bringdown_done - IOA bring down completion. 7209 * @ipr_cmd: ipr command struct 7210 * 7211 * This function processes the completion of an adapter bring down. 7212 * It wakes any reset sleepers. 7213 * 7214 * Return value: 7215 * IPR_RC_JOB_RETURN 7216 **/ 7217 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 7218 { 7219 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7220 int i; 7221 7222 ENTER; 7223 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) { 7224 ipr_trace; 7225 ioa_cfg->scsi_unblock = 1; 7226 schedule_work(&ioa_cfg->work_q); 7227 } 7228 7229 ioa_cfg->in_reset_reload = 0; 7230 ioa_cfg->reset_retries = 0; 7231 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 7232 spin_lock(&ioa_cfg->hrrq[i]._lock); 7233 ioa_cfg->hrrq[i].ioa_is_dead = 1; 7234 spin_unlock(&ioa_cfg->hrrq[i]._lock); 7235 } 7236 wmb(); 7237 7238 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 7239 wake_up_all(&ioa_cfg->reset_wait_q); 7240 LEAVE; 7241 7242 return IPR_RC_JOB_RETURN; 7243 } 7244 7245 /** 7246 * ipr_ioa_reset_done - IOA reset completion. 7247 * @ipr_cmd: ipr command struct 7248 * 7249 * This function processes the completion of an adapter reset. 7250 * It schedules any necessary mid-layer add/removes and 7251 * wakes any reset sleepers. 7252 * 7253 * Return value: 7254 * IPR_RC_JOB_RETURN 7255 **/ 7256 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 7257 { 7258 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7259 struct ipr_resource_entry *res; 7260 int j; 7261 7262 ENTER; 7263 ioa_cfg->in_reset_reload = 0; 7264 for (j = 0; j < ioa_cfg->hrrq_num; j++) { 7265 spin_lock(&ioa_cfg->hrrq[j]._lock); 7266 ioa_cfg->hrrq[j].allow_cmds = 1; 7267 spin_unlock(&ioa_cfg->hrrq[j]._lock); 7268 } 7269 wmb(); 7270 ioa_cfg->reset_cmd = NULL; 7271 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 7272 7273 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 7274 if (res->add_to_ml || res->del_from_ml) { 7275 ipr_trace; 7276 break; 7277 } 7278 } 7279 schedule_work(&ioa_cfg->work_q); 7280 7281 for (j = 0; j < IPR_NUM_HCAMS; j++) { 7282 list_del_init(&ioa_cfg->hostrcb[j]->queue); 7283 if (j < IPR_NUM_LOG_HCAMS) 7284 ipr_send_hcam(ioa_cfg, 7285 IPR_HCAM_CDB_OP_CODE_LOG_DATA, 7286 ioa_cfg->hostrcb[j]); 7287 else 7288 ipr_send_hcam(ioa_cfg, 7289 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 7290 ioa_cfg->hostrcb[j]); 7291 } 7292 7293 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS); 7294 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 7295 7296 ioa_cfg->reset_retries = 0; 7297 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 7298 wake_up_all(&ioa_cfg->reset_wait_q); 7299 7300 ioa_cfg->scsi_unblock = 1; 7301 schedule_work(&ioa_cfg->work_q); 7302 LEAVE; 7303 return IPR_RC_JOB_RETURN; 7304 } 7305 7306 /** 7307 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 7308 * @supported_dev: supported device struct 7309 * @vpids: vendor product id struct 7310 * 7311 * Return value: 7312 * none 7313 **/ 7314 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 7315 struct ipr_std_inq_vpids *vpids) 7316 { 7317 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 7318 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 7319 supported_dev->num_records = 1; 7320 supported_dev->data_length = 7321 cpu_to_be16(sizeof(struct ipr_supported_device)); 7322 supported_dev->reserved = 0; 7323 } 7324 7325 /** 7326 * ipr_set_supported_devs - Send Set Supported Devices for a device 7327 * @ipr_cmd: ipr command struct 7328 * 7329 * This function sends a Set Supported Devices to the adapter 7330 * 7331 * Return value: 7332 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7333 **/ 7334 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 7335 { 7336 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7337 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 7338 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7339 struct ipr_resource_entry *res = ipr_cmd->u.res; 7340 7341 ipr_cmd->job_step = ipr_ioa_reset_done; 7342 7343 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 7344 if (!ipr_is_scsi_disk(res)) 7345 continue; 7346 7347 ipr_cmd->u.res = res; 7348 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids); 7349 7350 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7351 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 7352 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7353 7354 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 7355 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES; 7356 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 7357 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 7358 7359 ipr_init_ioadl(ipr_cmd, 7360 ioa_cfg->vpd_cbs_dma + 7361 offsetof(struct ipr_misc_cbs, supp_dev), 7362 sizeof(struct ipr_supported_device), 7363 IPR_IOADL_FLAGS_WRITE_LAST); 7364 7365 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 7366 IPR_SET_SUP_DEVICE_TIMEOUT); 7367 7368 if (!ioa_cfg->sis64) 7369 ipr_cmd->job_step = ipr_set_supported_devs; 7370 LEAVE; 7371 return IPR_RC_JOB_RETURN; 7372 } 7373 7374 LEAVE; 7375 return IPR_RC_JOB_CONTINUE; 7376 } 7377 7378 /** 7379 * ipr_get_mode_page - Locate specified mode page 7380 * @mode_pages: mode page buffer 7381 * @page_code: page code to find 7382 * @len: minimum required length for mode page 7383 * 7384 * Return value: 7385 * pointer to mode page / NULL on failure 7386 **/ 7387 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 7388 u32 page_code, u32 len) 7389 { 7390 struct ipr_mode_page_hdr *mode_hdr; 7391 u32 page_length; 7392 u32 length; 7393 7394 if (!mode_pages || (mode_pages->hdr.length == 0)) 7395 return NULL; 7396 7397 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 7398 mode_hdr = (struct ipr_mode_page_hdr *) 7399 (mode_pages->data + mode_pages->hdr.block_desc_len); 7400 7401 while (length) { 7402 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 7403 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 7404 return mode_hdr; 7405 break; 7406 } else { 7407 page_length = (sizeof(struct ipr_mode_page_hdr) + 7408 mode_hdr->page_length); 7409 length -= page_length; 7410 mode_hdr = (struct ipr_mode_page_hdr *) 7411 ((unsigned long)mode_hdr + page_length); 7412 } 7413 } 7414 return NULL; 7415 } 7416 7417 /** 7418 * ipr_check_term_power - Check for term power errors 7419 * @ioa_cfg: ioa config struct 7420 * @mode_pages: IOAFP mode pages buffer 7421 * 7422 * Check the IOAFP's mode page 28 for term power errors 7423 * 7424 * Return value: 7425 * nothing 7426 **/ 7427 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 7428 struct ipr_mode_pages *mode_pages) 7429 { 7430 int i; 7431 int entry_length; 7432 struct ipr_dev_bus_entry *bus; 7433 struct ipr_mode_page28 *mode_page; 7434 7435 mode_page = ipr_get_mode_page(mode_pages, 0x28, 7436 sizeof(struct ipr_mode_page28)); 7437 7438 entry_length = mode_page->entry_length; 7439 7440 bus = mode_page->bus; 7441 7442 for (i = 0; i < mode_page->num_entries; i++) { 7443 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 7444 dev_err(&ioa_cfg->pdev->dev, 7445 "Term power is absent on scsi bus %d\n", 7446 bus->res_addr.bus); 7447 } 7448 7449 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 7450 } 7451 } 7452 7453 /** 7454 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 7455 * @ioa_cfg: ioa config struct 7456 * 7457 * Looks through the config table checking for SES devices. If 7458 * the SES device is in the SES table indicating a maximum SCSI 7459 * bus speed, the speed is limited for the bus. 7460 * 7461 * Return value: 7462 * none 7463 **/ 7464 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 7465 { 7466 u32 max_xfer_rate; 7467 int i; 7468 7469 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 7470 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 7471 ioa_cfg->bus_attr[i].bus_width); 7472 7473 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 7474 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 7475 } 7476 } 7477 7478 /** 7479 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 7480 * @ioa_cfg: ioa config struct 7481 * @mode_pages: mode page 28 buffer 7482 * 7483 * Updates mode page 28 based on driver configuration 7484 * 7485 * Return value: 7486 * none 7487 **/ 7488 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 7489 struct ipr_mode_pages *mode_pages) 7490 { 7491 int i, entry_length; 7492 struct ipr_dev_bus_entry *bus; 7493 struct ipr_bus_attributes *bus_attr; 7494 struct ipr_mode_page28 *mode_page; 7495 7496 mode_page = ipr_get_mode_page(mode_pages, 0x28, 7497 sizeof(struct ipr_mode_page28)); 7498 7499 entry_length = mode_page->entry_length; 7500 7501 /* Loop for each device bus entry */ 7502 for (i = 0, bus = mode_page->bus; 7503 i < mode_page->num_entries; 7504 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 7505 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 7506 dev_err(&ioa_cfg->pdev->dev, 7507 "Invalid resource address reported: 0x%08X\n", 7508 IPR_GET_PHYS_LOC(bus->res_addr)); 7509 continue; 7510 } 7511 7512 bus_attr = &ioa_cfg->bus_attr[i]; 7513 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 7514 bus->bus_width = bus_attr->bus_width; 7515 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 7516 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 7517 if (bus_attr->qas_enabled) 7518 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 7519 else 7520 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 7521 } 7522 } 7523 7524 /** 7525 * ipr_build_mode_select - Build a mode select command 7526 * @ipr_cmd: ipr command struct 7527 * @res_handle: resource handle to send command to 7528 * @parm: Byte 2 of Mode Sense command 7529 * @dma_addr: DMA buffer address 7530 * @xfer_len: data transfer length 7531 * 7532 * Return value: 7533 * none 7534 **/ 7535 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 7536 __be32 res_handle, u8 parm, 7537 dma_addr_t dma_addr, u8 xfer_len) 7538 { 7539 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7540 7541 ioarcb->res_handle = res_handle; 7542 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 7543 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 7544 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 7545 ioarcb->cmd_pkt.cdb[1] = parm; 7546 ioarcb->cmd_pkt.cdb[4] = xfer_len; 7547 7548 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST); 7549 } 7550 7551 /** 7552 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 7553 * @ipr_cmd: ipr command struct 7554 * 7555 * This function sets up the SCSI bus attributes and sends 7556 * a Mode Select for Page 28 to activate them. 7557 * 7558 * Return value: 7559 * IPR_RC_JOB_RETURN 7560 **/ 7561 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 7562 { 7563 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7564 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 7565 int length; 7566 7567 ENTER; 7568 ipr_scsi_bus_speed_limit(ioa_cfg); 7569 ipr_check_term_power(ioa_cfg, mode_pages); 7570 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 7571 length = mode_pages->hdr.length + 1; 7572 mode_pages->hdr.length = 0; 7573 7574 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 7575 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 7576 length); 7577 7578 ipr_cmd->job_step = ipr_set_supported_devs; 7579 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 7580 struct ipr_resource_entry, queue); 7581 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7582 7583 LEAVE; 7584 return IPR_RC_JOB_RETURN; 7585 } 7586 7587 /** 7588 * ipr_build_mode_sense - Builds a mode sense command 7589 * @ipr_cmd: ipr command struct 7590 * @res: resource entry struct 7591 * @parm: Byte 2 of mode sense command 7592 * @dma_addr: DMA address of mode sense buffer 7593 * @xfer_len: Size of DMA buffer 7594 * 7595 * Return value: 7596 * none 7597 **/ 7598 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 7599 __be32 res_handle, 7600 u8 parm, dma_addr_t dma_addr, u8 xfer_len) 7601 { 7602 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7603 7604 ioarcb->res_handle = res_handle; 7605 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 7606 ioarcb->cmd_pkt.cdb[2] = parm; 7607 ioarcb->cmd_pkt.cdb[4] = xfer_len; 7608 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 7609 7610 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 7611 } 7612 7613 /** 7614 * ipr_reset_cmd_failed - Handle failure of IOA reset command 7615 * @ipr_cmd: ipr command struct 7616 * 7617 * This function handles the failure of an IOA bringup command. 7618 * 7619 * Return value: 7620 * IPR_RC_JOB_RETURN 7621 **/ 7622 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 7623 { 7624 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7625 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7626 7627 dev_err(&ioa_cfg->pdev->dev, 7628 "0x%02X failed with IOASC: 0x%08X\n", 7629 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 7630 7631 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 7632 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 7633 return IPR_RC_JOB_RETURN; 7634 } 7635 7636 /** 7637 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 7638 * @ipr_cmd: ipr command struct 7639 * 7640 * This function handles the failure of a Mode Sense to the IOAFP. 7641 * Some adapters do not handle all mode pages. 7642 * 7643 * Return value: 7644 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7645 **/ 7646 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 7647 { 7648 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7649 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7650 7651 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 7652 ipr_cmd->job_step = ipr_set_supported_devs; 7653 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 7654 struct ipr_resource_entry, queue); 7655 return IPR_RC_JOB_CONTINUE; 7656 } 7657 7658 return ipr_reset_cmd_failed(ipr_cmd); 7659 } 7660 7661 /** 7662 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 7663 * @ipr_cmd: ipr command struct 7664 * 7665 * This function send a Page 28 mode sense to the IOA to 7666 * retrieve SCSI bus attributes. 7667 * 7668 * Return value: 7669 * IPR_RC_JOB_RETURN 7670 **/ 7671 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 7672 { 7673 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7674 7675 ENTER; 7676 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 7677 0x28, ioa_cfg->vpd_cbs_dma + 7678 offsetof(struct ipr_misc_cbs, mode_pages), 7679 sizeof(struct ipr_mode_pages)); 7680 7681 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 7682 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 7683 7684 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7685 7686 LEAVE; 7687 return IPR_RC_JOB_RETURN; 7688 } 7689 7690 /** 7691 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA 7692 * @ipr_cmd: ipr command struct 7693 * 7694 * This function enables dual IOA RAID support if possible. 7695 * 7696 * Return value: 7697 * IPR_RC_JOB_RETURN 7698 **/ 7699 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd) 7700 { 7701 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7702 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 7703 struct ipr_mode_page24 *mode_page; 7704 int length; 7705 7706 ENTER; 7707 mode_page = ipr_get_mode_page(mode_pages, 0x24, 7708 sizeof(struct ipr_mode_page24)); 7709 7710 if (mode_page) 7711 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF; 7712 7713 length = mode_pages->hdr.length + 1; 7714 mode_pages->hdr.length = 0; 7715 7716 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 7717 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 7718 length); 7719 7720 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 7721 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7722 7723 LEAVE; 7724 return IPR_RC_JOB_RETURN; 7725 } 7726 7727 /** 7728 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense 7729 * @ipr_cmd: ipr command struct 7730 * 7731 * This function handles the failure of a Mode Sense to the IOAFP. 7732 * Some adapters do not handle all mode pages. 7733 * 7734 * Return value: 7735 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7736 **/ 7737 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd) 7738 { 7739 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7740 7741 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 7742 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 7743 return IPR_RC_JOB_CONTINUE; 7744 } 7745 7746 return ipr_reset_cmd_failed(ipr_cmd); 7747 } 7748 7749 /** 7750 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA 7751 * @ipr_cmd: ipr command struct 7752 * 7753 * This function send a mode sense to the IOA to retrieve 7754 * the IOA Advanced Function Control mode page. 7755 * 7756 * Return value: 7757 * IPR_RC_JOB_RETURN 7758 **/ 7759 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd) 7760 { 7761 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7762 7763 ENTER; 7764 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 7765 0x24, ioa_cfg->vpd_cbs_dma + 7766 offsetof(struct ipr_misc_cbs, mode_pages), 7767 sizeof(struct ipr_mode_pages)); 7768 7769 ipr_cmd->job_step = ipr_ioafp_mode_select_page24; 7770 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed; 7771 7772 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7773 7774 LEAVE; 7775 return IPR_RC_JOB_RETURN; 7776 } 7777 7778 /** 7779 * ipr_init_res_table - Initialize the resource table 7780 * @ipr_cmd: ipr command struct 7781 * 7782 * This function looks through the existing resource table, comparing 7783 * it with the config table. This function will take care of old/new 7784 * devices and schedule adding/removing them from the mid-layer 7785 * as appropriate. 7786 * 7787 * Return value: 7788 * IPR_RC_JOB_CONTINUE 7789 **/ 7790 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 7791 { 7792 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7793 struct ipr_resource_entry *res, *temp; 7794 struct ipr_config_table_entry_wrapper cfgtew; 7795 int entries, found, flag, i; 7796 LIST_HEAD(old_res); 7797 7798 ENTER; 7799 if (ioa_cfg->sis64) 7800 flag = ioa_cfg->u.cfg_table64->hdr64.flags; 7801 else 7802 flag = ioa_cfg->u.cfg_table->hdr.flags; 7803 7804 if (flag & IPR_UCODE_DOWNLOAD_REQ) 7805 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 7806 7807 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 7808 list_move_tail(&res->queue, &old_res); 7809 7810 if (ioa_cfg->sis64) 7811 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries); 7812 else 7813 entries = ioa_cfg->u.cfg_table->hdr.num_entries; 7814 7815 for (i = 0; i < entries; i++) { 7816 if (ioa_cfg->sis64) 7817 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i]; 7818 else 7819 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i]; 7820 found = 0; 7821 7822 list_for_each_entry_safe(res, temp, &old_res, queue) { 7823 if (ipr_is_same_device(res, &cfgtew)) { 7824 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7825 found = 1; 7826 break; 7827 } 7828 } 7829 7830 if (!found) { 7831 if (list_empty(&ioa_cfg->free_res_q)) { 7832 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 7833 break; 7834 } 7835 7836 found = 1; 7837 res = list_entry(ioa_cfg->free_res_q.next, 7838 struct ipr_resource_entry, queue); 7839 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7840 ipr_init_res_entry(res, &cfgtew); 7841 res->add_to_ml = 1; 7842 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))) 7843 res->sdev->allow_restart = 1; 7844 7845 if (found) 7846 ipr_update_res_entry(res, &cfgtew); 7847 } 7848 7849 list_for_each_entry_safe(res, temp, &old_res, queue) { 7850 if (res->sdev) { 7851 res->del_from_ml = 1; 7852 res->res_handle = IPR_INVALID_RES_HANDLE; 7853 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7854 } 7855 } 7856 7857 list_for_each_entry_safe(res, temp, &old_res, queue) { 7858 ipr_clear_res_target(res); 7859 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 7860 } 7861 7862 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 7863 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24; 7864 else 7865 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 7866 7867 LEAVE; 7868 return IPR_RC_JOB_CONTINUE; 7869 } 7870 7871 /** 7872 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 7873 * @ipr_cmd: ipr command struct 7874 * 7875 * This function sends a Query IOA Configuration command 7876 * to the adapter to retrieve the IOA configuration table. 7877 * 7878 * Return value: 7879 * IPR_RC_JOB_RETURN 7880 **/ 7881 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 7882 { 7883 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7884 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7885 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 7886 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 7887 7888 ENTER; 7889 if (cap->cap & IPR_CAP_DUAL_IOA_RAID) 7890 ioa_cfg->dual_raid = 1; 7891 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 7892 ucode_vpd->major_release, ucode_vpd->card_type, 7893 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 7894 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7895 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7896 7897 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 7898 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff; 7899 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff; 7900 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff; 7901 7902 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size, 7903 IPR_IOADL_FLAGS_READ_LAST); 7904 7905 ipr_cmd->job_step = ipr_init_res_table; 7906 7907 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7908 7909 LEAVE; 7910 return IPR_RC_JOB_RETURN; 7911 } 7912 7913 static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd) 7914 { 7915 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7916 7917 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) 7918 return IPR_RC_JOB_CONTINUE; 7919 7920 return ipr_reset_cmd_failed(ipr_cmd); 7921 } 7922 7923 static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd, 7924 __be32 res_handle, u8 sa_code) 7925 { 7926 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7927 7928 ioarcb->res_handle = res_handle; 7929 ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION; 7930 ioarcb->cmd_pkt.cdb[1] = sa_code; 7931 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7932 } 7933 7934 /** 7935 * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service 7936 * action 7937 * 7938 * Return value: 7939 * none 7940 **/ 7941 static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd) 7942 { 7943 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7944 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7945 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data; 7946 7947 ENTER; 7948 7949 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 7950 7951 if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) { 7952 ipr_build_ioa_service_action(ipr_cmd, 7953 cpu_to_be32(IPR_IOA_RES_HANDLE), 7954 IPR_IOA_SA_CHANGE_CACHE_PARAMS); 7955 7956 ioarcb->cmd_pkt.cdb[2] = 0x40; 7957 7958 ipr_cmd->job_step_failed = ipr_ioa_service_action_failed; 7959 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 7960 IPR_SET_SUP_DEVICE_TIMEOUT); 7961 7962 LEAVE; 7963 return IPR_RC_JOB_RETURN; 7964 } 7965 7966 LEAVE; 7967 return IPR_RC_JOB_CONTINUE; 7968 } 7969 7970 /** 7971 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 7972 * @ipr_cmd: ipr command struct 7973 * 7974 * This utility function sends an inquiry to the adapter. 7975 * 7976 * Return value: 7977 * none 7978 **/ 7979 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 7980 dma_addr_t dma_addr, u8 xfer_len) 7981 { 7982 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7983 7984 ENTER; 7985 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 7986 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7987 7988 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 7989 ioarcb->cmd_pkt.cdb[1] = flags; 7990 ioarcb->cmd_pkt.cdb[2] = page; 7991 ioarcb->cmd_pkt.cdb[4] = xfer_len; 7992 7993 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 7994 7995 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7996 LEAVE; 7997 } 7998 7999 /** 8000 * ipr_inquiry_page_supported - Is the given inquiry page supported 8001 * @page0: inquiry page 0 buffer 8002 * @page: page code. 8003 * 8004 * This function determines if the specified inquiry page is supported. 8005 * 8006 * Return value: 8007 * 1 if page is supported / 0 if not 8008 **/ 8009 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 8010 { 8011 int i; 8012 8013 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 8014 if (page0->page[i] == page) 8015 return 1; 8016 8017 return 0; 8018 } 8019 8020 /** 8021 * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter. 8022 * @ipr_cmd: ipr command struct 8023 * 8024 * This function sends a Page 0xC4 inquiry to the adapter 8025 * to retrieve software VPD information. 8026 * 8027 * Return value: 8028 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8029 **/ 8030 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd) 8031 { 8032 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8033 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 8034 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data; 8035 8036 ENTER; 8037 ipr_cmd->job_step = ipr_ioafp_set_caching_parameters; 8038 memset(pageC4, 0, sizeof(*pageC4)); 8039 8040 if (ipr_inquiry_page_supported(page0, 0xC4)) { 8041 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4, 8042 (ioa_cfg->vpd_cbs_dma 8043 + offsetof(struct ipr_misc_cbs, 8044 pageC4_data)), 8045 sizeof(struct ipr_inquiry_pageC4)); 8046 return IPR_RC_JOB_RETURN; 8047 } 8048 8049 LEAVE; 8050 return IPR_RC_JOB_CONTINUE; 8051 } 8052 8053 /** 8054 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter. 8055 * @ipr_cmd: ipr command struct 8056 * 8057 * This function sends a Page 0xD0 inquiry to the adapter 8058 * to retrieve adapter capabilities. 8059 * 8060 * Return value: 8061 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8062 **/ 8063 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd) 8064 { 8065 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8066 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 8067 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 8068 8069 ENTER; 8070 ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry; 8071 memset(cap, 0, sizeof(*cap)); 8072 8073 if (ipr_inquiry_page_supported(page0, 0xD0)) { 8074 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0, 8075 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap), 8076 sizeof(struct ipr_inquiry_cap)); 8077 return IPR_RC_JOB_RETURN; 8078 } 8079 8080 LEAVE; 8081 return IPR_RC_JOB_CONTINUE; 8082 } 8083 8084 /** 8085 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 8086 * @ipr_cmd: ipr command struct 8087 * 8088 * This function sends a Page 3 inquiry to the adapter 8089 * to retrieve software VPD information. 8090 * 8091 * Return value: 8092 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8093 **/ 8094 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 8095 { 8096 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8097 8098 ENTER; 8099 8100 ipr_cmd->job_step = ipr_ioafp_cap_inquiry; 8101 8102 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 8103 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 8104 sizeof(struct ipr_inquiry_page3)); 8105 8106 LEAVE; 8107 return IPR_RC_JOB_RETURN; 8108 } 8109 8110 /** 8111 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 8112 * @ipr_cmd: ipr command struct 8113 * 8114 * This function sends a Page 0 inquiry to the adapter 8115 * to retrieve supported inquiry pages. 8116 * 8117 * Return value: 8118 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8119 **/ 8120 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 8121 { 8122 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8123 char type[5]; 8124 8125 ENTER; 8126 8127 /* Grab the type out of the VPD and store it away */ 8128 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 8129 type[4] = '\0'; 8130 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 8131 8132 if (ipr_invalid_adapter(ioa_cfg)) { 8133 dev_err(&ioa_cfg->pdev->dev, 8134 "Adapter not supported in this hardware configuration.\n"); 8135 8136 if (!ipr_testmode) { 8137 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 8138 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8139 list_add_tail(&ipr_cmd->queue, 8140 &ioa_cfg->hrrq->hrrq_free_q); 8141 return IPR_RC_JOB_RETURN; 8142 } 8143 } 8144 8145 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 8146 8147 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 8148 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 8149 sizeof(struct ipr_inquiry_page0)); 8150 8151 LEAVE; 8152 return IPR_RC_JOB_RETURN; 8153 } 8154 8155 /** 8156 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 8157 * @ipr_cmd: ipr command struct 8158 * 8159 * This function sends a standard inquiry to the adapter. 8160 * 8161 * Return value: 8162 * IPR_RC_JOB_RETURN 8163 **/ 8164 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 8165 { 8166 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8167 8168 ENTER; 8169 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 8170 8171 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 8172 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 8173 sizeof(struct ipr_ioa_vpd)); 8174 8175 LEAVE; 8176 return IPR_RC_JOB_RETURN; 8177 } 8178 8179 /** 8180 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ. 8181 * @ipr_cmd: ipr command struct 8182 * 8183 * This function send an Identify Host Request Response Queue 8184 * command to establish the HRRQ with the adapter. 8185 * 8186 * Return value: 8187 * IPR_RC_JOB_RETURN 8188 **/ 8189 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd) 8190 { 8191 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8192 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 8193 struct ipr_hrr_queue *hrrq; 8194 8195 ENTER; 8196 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 8197 if (ioa_cfg->identify_hrrq_index == 0) 8198 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 8199 8200 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) { 8201 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index]; 8202 8203 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 8204 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 8205 8206 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 8207 if (ioa_cfg->sis64) 8208 ioarcb->cmd_pkt.cdb[1] = 0x1; 8209 8210 if (ioa_cfg->nvectors == 1) 8211 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE; 8212 else 8213 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE; 8214 8215 ioarcb->cmd_pkt.cdb[2] = 8216 ((u64) hrrq->host_rrq_dma >> 24) & 0xff; 8217 ioarcb->cmd_pkt.cdb[3] = 8218 ((u64) hrrq->host_rrq_dma >> 16) & 0xff; 8219 ioarcb->cmd_pkt.cdb[4] = 8220 ((u64) hrrq->host_rrq_dma >> 8) & 0xff; 8221 ioarcb->cmd_pkt.cdb[5] = 8222 ((u64) hrrq->host_rrq_dma) & 0xff; 8223 ioarcb->cmd_pkt.cdb[7] = 8224 ((sizeof(u32) * hrrq->size) >> 8) & 0xff; 8225 ioarcb->cmd_pkt.cdb[8] = 8226 (sizeof(u32) * hrrq->size) & 0xff; 8227 8228 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE) 8229 ioarcb->cmd_pkt.cdb[9] = 8230 ioa_cfg->identify_hrrq_index; 8231 8232 if (ioa_cfg->sis64) { 8233 ioarcb->cmd_pkt.cdb[10] = 8234 ((u64) hrrq->host_rrq_dma >> 56) & 0xff; 8235 ioarcb->cmd_pkt.cdb[11] = 8236 ((u64) hrrq->host_rrq_dma >> 48) & 0xff; 8237 ioarcb->cmd_pkt.cdb[12] = 8238 ((u64) hrrq->host_rrq_dma >> 40) & 0xff; 8239 ioarcb->cmd_pkt.cdb[13] = 8240 ((u64) hrrq->host_rrq_dma >> 32) & 0xff; 8241 } 8242 8243 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE) 8244 ioarcb->cmd_pkt.cdb[14] = 8245 ioa_cfg->identify_hrrq_index; 8246 8247 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 8248 IPR_INTERNAL_TIMEOUT); 8249 8250 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) 8251 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 8252 8253 LEAVE; 8254 return IPR_RC_JOB_RETURN; 8255 } 8256 8257 LEAVE; 8258 return IPR_RC_JOB_CONTINUE; 8259 } 8260 8261 /** 8262 * ipr_reset_timer_done - Adapter reset timer function 8263 * @ipr_cmd: ipr command struct 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_timer_done(struct ipr_cmnd *ipr_cmd) 8275 { 8276 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8277 unsigned long lock_flags = 0; 8278 8279 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8280 8281 if (ioa_cfg->reset_cmd == ipr_cmd) { 8282 list_del(&ipr_cmd->queue); 8283 ipr_cmd->done(ipr_cmd); 8284 } 8285 8286 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8287 } 8288 8289 /** 8290 * ipr_reset_start_timer - Start a timer for adapter reset job 8291 * @ipr_cmd: ipr command struct 8292 * @timeout: timeout value 8293 * 8294 * Description: This function is used in adapter reset processing 8295 * for timing events. If the reset_cmd pointer in the IOA 8296 * config struct is not this adapter's we are doing nested 8297 * resets and fail_all_ops will take care of freeing the 8298 * command block. 8299 * 8300 * Return value: 8301 * none 8302 **/ 8303 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 8304 unsigned long timeout) 8305 { 8306 8307 ENTER; 8308 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 8309 ipr_cmd->done = ipr_reset_ioa_job; 8310 8311 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 8312 ipr_cmd->timer.expires = jiffies + timeout; 8313 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 8314 add_timer(&ipr_cmd->timer); 8315 } 8316 8317 /** 8318 * ipr_init_ioa_mem - Initialize ioa_cfg control block 8319 * @ioa_cfg: ioa cfg struct 8320 * 8321 * Return value: 8322 * nothing 8323 **/ 8324 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 8325 { 8326 struct ipr_hrr_queue *hrrq; 8327 8328 for_each_hrrq(hrrq, ioa_cfg) { 8329 spin_lock(&hrrq->_lock); 8330 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size); 8331 8332 /* Initialize Host RRQ pointers */ 8333 hrrq->hrrq_start = hrrq->host_rrq; 8334 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1]; 8335 hrrq->hrrq_curr = hrrq->hrrq_start; 8336 hrrq->toggle_bit = 1; 8337 spin_unlock(&hrrq->_lock); 8338 } 8339 wmb(); 8340 8341 ioa_cfg->identify_hrrq_index = 0; 8342 if (ioa_cfg->hrrq_num == 1) 8343 atomic_set(&ioa_cfg->hrrq_index, 0); 8344 else 8345 atomic_set(&ioa_cfg->hrrq_index, 1); 8346 8347 /* Zero out config table */ 8348 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size); 8349 } 8350 8351 /** 8352 * ipr_reset_next_stage - Process IPL stage change based on feedback register. 8353 * @ipr_cmd: ipr command struct 8354 * 8355 * Return value: 8356 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8357 **/ 8358 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd) 8359 { 8360 unsigned long stage, stage_time; 8361 u32 feedback; 8362 volatile u32 int_reg; 8363 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8364 u64 maskval = 0; 8365 8366 feedback = readl(ioa_cfg->regs.init_feedback_reg); 8367 stage = feedback & IPR_IPL_INIT_STAGE_MASK; 8368 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK; 8369 8370 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time); 8371 8372 /* sanity check the stage_time value */ 8373 if (stage_time == 0) 8374 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME; 8375 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME) 8376 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME; 8377 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT) 8378 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT; 8379 8380 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) { 8381 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg); 8382 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8383 stage_time = ioa_cfg->transop_timeout; 8384 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 8385 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) { 8386 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 8387 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 8388 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 8389 maskval = IPR_PCII_IPL_STAGE_CHANGE; 8390 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER; 8391 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg); 8392 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8393 return IPR_RC_JOB_CONTINUE; 8394 } 8395 } 8396 8397 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 8398 ipr_cmd->timer.expires = jiffies + stage_time * HZ; 8399 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 8400 ipr_cmd->done = ipr_reset_ioa_job; 8401 add_timer(&ipr_cmd->timer); 8402 8403 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 8404 8405 return IPR_RC_JOB_RETURN; 8406 } 8407 8408 /** 8409 * ipr_reset_enable_ioa - Enable the IOA following a reset. 8410 * @ipr_cmd: ipr command struct 8411 * 8412 * This function reinitializes some control blocks and 8413 * enables destructive diagnostics on the adapter. 8414 * 8415 * Return value: 8416 * IPR_RC_JOB_RETURN 8417 **/ 8418 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 8419 { 8420 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8421 volatile u32 int_reg; 8422 volatile u64 maskval; 8423 int i; 8424 8425 ENTER; 8426 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 8427 ipr_init_ioa_mem(ioa_cfg); 8428 8429 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 8430 spin_lock(&ioa_cfg->hrrq[i]._lock); 8431 ioa_cfg->hrrq[i].allow_interrupts = 1; 8432 spin_unlock(&ioa_cfg->hrrq[i]._lock); 8433 } 8434 wmb(); 8435 if (ioa_cfg->sis64) { 8436 /* Set the adapter to the correct endian mode. */ 8437 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg); 8438 int_reg = readl(ioa_cfg->regs.endian_swap_reg); 8439 } 8440 8441 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 8442 8443 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 8444 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 8445 ioa_cfg->regs.clr_interrupt_mask_reg32); 8446 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8447 return IPR_RC_JOB_CONTINUE; 8448 } 8449 8450 /* Enable destructive diagnostics on IOA */ 8451 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32); 8452 8453 if (ioa_cfg->sis64) { 8454 maskval = IPR_PCII_IPL_STAGE_CHANGE; 8455 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS; 8456 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg); 8457 } else 8458 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32); 8459 8460 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8461 8462 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 8463 8464 if (ioa_cfg->sis64) { 8465 ipr_cmd->job_step = ipr_reset_next_stage; 8466 return IPR_RC_JOB_CONTINUE; 8467 } 8468 8469 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 8470 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ); 8471 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 8472 ipr_cmd->done = ipr_reset_ioa_job; 8473 add_timer(&ipr_cmd->timer); 8474 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 8475 8476 LEAVE; 8477 return IPR_RC_JOB_RETURN; 8478 } 8479 8480 /** 8481 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 8482 * @ipr_cmd: ipr command struct 8483 * 8484 * This function is invoked when an adapter dump has run out 8485 * of processing time. 8486 * 8487 * Return value: 8488 * IPR_RC_JOB_CONTINUE 8489 **/ 8490 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 8491 { 8492 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8493 8494 if (ioa_cfg->sdt_state == GET_DUMP) 8495 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 8496 else if (ioa_cfg->sdt_state == READ_DUMP) 8497 ioa_cfg->sdt_state = ABORT_DUMP; 8498 8499 ioa_cfg->dump_timeout = 1; 8500 ipr_cmd->job_step = ipr_reset_alert; 8501 8502 return IPR_RC_JOB_CONTINUE; 8503 } 8504 8505 /** 8506 * ipr_unit_check_no_data - Log a unit check/no data error log 8507 * @ioa_cfg: ioa config struct 8508 * 8509 * Logs an error indicating the adapter unit checked, but for some 8510 * reason, we were unable to fetch the unit check buffer. 8511 * 8512 * Return value: 8513 * nothing 8514 **/ 8515 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 8516 { 8517 ioa_cfg->errors_logged++; 8518 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 8519 } 8520 8521 /** 8522 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 8523 * @ioa_cfg: ioa config struct 8524 * 8525 * Fetches the unit check buffer from the adapter by clocking the data 8526 * through the mailbox register. 8527 * 8528 * Return value: 8529 * nothing 8530 **/ 8531 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 8532 { 8533 unsigned long mailbox; 8534 struct ipr_hostrcb *hostrcb; 8535 struct ipr_uc_sdt sdt; 8536 int rc, length; 8537 u32 ioasc; 8538 8539 mailbox = readl(ioa_cfg->ioa_mailbox); 8540 8541 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) { 8542 ipr_unit_check_no_data(ioa_cfg); 8543 return; 8544 } 8545 8546 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 8547 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 8548 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 8549 8550 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) || 8551 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) && 8552 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) { 8553 ipr_unit_check_no_data(ioa_cfg); 8554 return; 8555 } 8556 8557 /* Find length of the first sdt entry (UC buffer) */ 8558 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE) 8559 length = be32_to_cpu(sdt.entry[0].end_token); 8560 else 8561 length = (be32_to_cpu(sdt.entry[0].end_token) - 8562 be32_to_cpu(sdt.entry[0].start_token)) & 8563 IPR_FMT2_MBX_ADDR_MASK; 8564 8565 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 8566 struct ipr_hostrcb, queue); 8567 list_del_init(&hostrcb->queue); 8568 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 8569 8570 rc = ipr_get_ldump_data_section(ioa_cfg, 8571 be32_to_cpu(sdt.entry[0].start_token), 8572 (__be32 *)&hostrcb->hcam, 8573 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 8574 8575 if (!rc) { 8576 ipr_handle_log_data(ioa_cfg, hostrcb); 8577 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 8578 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED && 8579 ioa_cfg->sdt_state == GET_DUMP) 8580 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 8581 } else 8582 ipr_unit_check_no_data(ioa_cfg); 8583 8584 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 8585 } 8586 8587 /** 8588 * ipr_reset_get_unit_check_job - Call to get the unit check buffer. 8589 * @ipr_cmd: ipr command struct 8590 * 8591 * Description: This function will call to get the unit check buffer. 8592 * 8593 * Return value: 8594 * IPR_RC_JOB_RETURN 8595 **/ 8596 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd) 8597 { 8598 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8599 8600 ENTER; 8601 ioa_cfg->ioa_unit_checked = 0; 8602 ipr_get_unit_check_buffer(ioa_cfg); 8603 ipr_cmd->job_step = ipr_reset_alert; 8604 ipr_reset_start_timer(ipr_cmd, 0); 8605 8606 LEAVE; 8607 return IPR_RC_JOB_RETURN; 8608 } 8609 8610 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd) 8611 { 8612 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8613 8614 ENTER; 8615 8616 if (ioa_cfg->sdt_state != GET_DUMP) 8617 return IPR_RC_JOB_RETURN; 8618 8619 if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left || 8620 (readl(ioa_cfg->regs.sense_interrupt_reg) & 8621 IPR_PCII_MAILBOX_STABLE)) { 8622 8623 if (!ipr_cmd->u.time_left) 8624 dev_err(&ioa_cfg->pdev->dev, 8625 "Timed out waiting for Mailbox register.\n"); 8626 8627 ioa_cfg->sdt_state = READ_DUMP; 8628 ioa_cfg->dump_timeout = 0; 8629 if (ioa_cfg->sis64) 8630 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT); 8631 else 8632 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT); 8633 ipr_cmd->job_step = ipr_reset_wait_for_dump; 8634 schedule_work(&ioa_cfg->work_q); 8635 8636 } else { 8637 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 8638 ipr_reset_start_timer(ipr_cmd, 8639 IPR_CHECK_FOR_RESET_TIMEOUT); 8640 } 8641 8642 LEAVE; 8643 return IPR_RC_JOB_RETURN; 8644 } 8645 8646 /** 8647 * ipr_reset_restore_cfg_space - Restore PCI config space. 8648 * @ipr_cmd: ipr command struct 8649 * 8650 * Description: This function restores the saved PCI config space of 8651 * the adapter, fails all outstanding ops back to the callers, and 8652 * fetches the dump/unit check if applicable to this reset. 8653 * 8654 * Return value: 8655 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8656 **/ 8657 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 8658 { 8659 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8660 u32 int_reg; 8661 8662 ENTER; 8663 ioa_cfg->pdev->state_saved = true; 8664 pci_restore_state(ioa_cfg->pdev); 8665 8666 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 8667 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 8668 return IPR_RC_JOB_CONTINUE; 8669 } 8670 8671 ipr_fail_all_ops(ioa_cfg); 8672 8673 if (ioa_cfg->sis64) { 8674 /* Set the adapter to the correct endian mode. */ 8675 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg); 8676 int_reg = readl(ioa_cfg->regs.endian_swap_reg); 8677 } 8678 8679 if (ioa_cfg->ioa_unit_checked) { 8680 if (ioa_cfg->sis64) { 8681 ipr_cmd->job_step = ipr_reset_get_unit_check_job; 8682 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT); 8683 return IPR_RC_JOB_RETURN; 8684 } else { 8685 ioa_cfg->ioa_unit_checked = 0; 8686 ipr_get_unit_check_buffer(ioa_cfg); 8687 ipr_cmd->job_step = ipr_reset_alert; 8688 ipr_reset_start_timer(ipr_cmd, 0); 8689 return IPR_RC_JOB_RETURN; 8690 } 8691 } 8692 8693 if (ioa_cfg->in_ioa_bringdown) { 8694 ipr_cmd->job_step = ipr_ioa_bringdown_done; 8695 } else if (ioa_cfg->sdt_state == GET_DUMP) { 8696 ipr_cmd->job_step = ipr_dump_mailbox_wait; 8697 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX; 8698 } else { 8699 ipr_cmd->job_step = ipr_reset_enable_ioa; 8700 } 8701 8702 LEAVE; 8703 return IPR_RC_JOB_CONTINUE; 8704 } 8705 8706 /** 8707 * ipr_reset_bist_done - BIST has completed on the adapter. 8708 * @ipr_cmd: ipr command struct 8709 * 8710 * Description: Unblock config space and resume the reset process. 8711 * 8712 * Return value: 8713 * IPR_RC_JOB_CONTINUE 8714 **/ 8715 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd) 8716 { 8717 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8718 8719 ENTER; 8720 if (ioa_cfg->cfg_locked) 8721 pci_cfg_access_unlock(ioa_cfg->pdev); 8722 ioa_cfg->cfg_locked = 0; 8723 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 8724 LEAVE; 8725 return IPR_RC_JOB_CONTINUE; 8726 } 8727 8728 /** 8729 * ipr_reset_start_bist - Run BIST on the adapter. 8730 * @ipr_cmd: ipr command struct 8731 * 8732 * Description: This function runs BIST on the adapter, then delays 2 seconds. 8733 * 8734 * Return value: 8735 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8736 **/ 8737 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 8738 { 8739 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8740 int rc = PCIBIOS_SUCCESSFUL; 8741 8742 ENTER; 8743 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO) 8744 writel(IPR_UPROCI_SIS64_START_BIST, 8745 ioa_cfg->regs.set_uproc_interrupt_reg32); 8746 else 8747 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 8748 8749 if (rc == PCIBIOS_SUCCESSFUL) { 8750 ipr_cmd->job_step = ipr_reset_bist_done; 8751 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 8752 rc = IPR_RC_JOB_RETURN; 8753 } else { 8754 if (ioa_cfg->cfg_locked) 8755 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev); 8756 ioa_cfg->cfg_locked = 0; 8757 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 8758 rc = IPR_RC_JOB_CONTINUE; 8759 } 8760 8761 LEAVE; 8762 return rc; 8763 } 8764 8765 /** 8766 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter 8767 * @ipr_cmd: ipr command struct 8768 * 8769 * Description: This clears PCI reset to the adapter and delays two seconds. 8770 * 8771 * Return value: 8772 * IPR_RC_JOB_RETURN 8773 **/ 8774 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd) 8775 { 8776 ENTER; 8777 ipr_cmd->job_step = ipr_reset_bist_done; 8778 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 8779 LEAVE; 8780 return IPR_RC_JOB_RETURN; 8781 } 8782 8783 /** 8784 * ipr_reset_reset_work - Pulse a PCIe fundamental reset 8785 * @work: work struct 8786 * 8787 * Description: This pulses warm reset to a slot. 8788 * 8789 **/ 8790 static void ipr_reset_reset_work(struct work_struct *work) 8791 { 8792 struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work); 8793 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8794 struct pci_dev *pdev = ioa_cfg->pdev; 8795 unsigned long lock_flags = 0; 8796 8797 ENTER; 8798 pci_set_pcie_reset_state(pdev, pcie_warm_reset); 8799 msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT)); 8800 pci_set_pcie_reset_state(pdev, pcie_deassert_reset); 8801 8802 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8803 if (ioa_cfg->reset_cmd == ipr_cmd) 8804 ipr_reset_ioa_job(ipr_cmd); 8805 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8806 LEAVE; 8807 } 8808 8809 /** 8810 * ipr_reset_slot_reset - Reset the PCI slot of the adapter. 8811 * @ipr_cmd: ipr command struct 8812 * 8813 * Description: This asserts PCI reset to the adapter. 8814 * 8815 * Return value: 8816 * IPR_RC_JOB_RETURN 8817 **/ 8818 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd) 8819 { 8820 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8821 8822 ENTER; 8823 INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work); 8824 queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work); 8825 ipr_cmd->job_step = ipr_reset_slot_reset_done; 8826 LEAVE; 8827 return IPR_RC_JOB_RETURN; 8828 } 8829 8830 /** 8831 * ipr_reset_block_config_access_wait - Wait for permission to block config access 8832 * @ipr_cmd: ipr command struct 8833 * 8834 * Description: This attempts to block config access to the IOA. 8835 * 8836 * Return value: 8837 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8838 **/ 8839 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd) 8840 { 8841 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8842 int rc = IPR_RC_JOB_CONTINUE; 8843 8844 if (pci_cfg_access_trylock(ioa_cfg->pdev)) { 8845 ioa_cfg->cfg_locked = 1; 8846 ipr_cmd->job_step = ioa_cfg->reset; 8847 } else { 8848 if (ipr_cmd->u.time_left) { 8849 rc = IPR_RC_JOB_RETURN; 8850 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 8851 ipr_reset_start_timer(ipr_cmd, 8852 IPR_CHECK_FOR_RESET_TIMEOUT); 8853 } else { 8854 ipr_cmd->job_step = ioa_cfg->reset; 8855 dev_err(&ioa_cfg->pdev->dev, 8856 "Timed out waiting to lock config access. Resetting anyway.\n"); 8857 } 8858 } 8859 8860 return rc; 8861 } 8862 8863 /** 8864 * ipr_reset_block_config_access - Block config access to the IOA 8865 * @ipr_cmd: ipr command struct 8866 * 8867 * Description: This attempts to block config access to the IOA 8868 * 8869 * Return value: 8870 * IPR_RC_JOB_CONTINUE 8871 **/ 8872 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd) 8873 { 8874 ipr_cmd->ioa_cfg->cfg_locked = 0; 8875 ipr_cmd->job_step = ipr_reset_block_config_access_wait; 8876 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 8877 return IPR_RC_JOB_CONTINUE; 8878 } 8879 8880 /** 8881 * ipr_reset_allowed - Query whether or not IOA can be reset 8882 * @ioa_cfg: ioa config struct 8883 * 8884 * Return value: 8885 * 0 if reset not allowed / non-zero if reset is allowed 8886 **/ 8887 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 8888 { 8889 volatile u32 temp_reg; 8890 8891 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 8892 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 8893 } 8894 8895 /** 8896 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 8897 * @ipr_cmd: ipr command struct 8898 * 8899 * Description: This function waits for adapter permission to run BIST, 8900 * then runs BIST. If the adapter does not give permission after a 8901 * reasonable time, we will reset the adapter anyway. The impact of 8902 * resetting the adapter without warning the adapter is the risk of 8903 * losing the persistent error log on the adapter. If the adapter is 8904 * reset while it is writing to the flash on the adapter, the flash 8905 * segment will have bad ECC and be zeroed. 8906 * 8907 * Return value: 8908 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8909 **/ 8910 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 8911 { 8912 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8913 int rc = IPR_RC_JOB_RETURN; 8914 8915 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 8916 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 8917 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 8918 } else { 8919 ipr_cmd->job_step = ipr_reset_block_config_access; 8920 rc = IPR_RC_JOB_CONTINUE; 8921 } 8922 8923 return rc; 8924 } 8925 8926 /** 8927 * ipr_reset_alert - Alert the adapter of a pending reset 8928 * @ipr_cmd: ipr command struct 8929 * 8930 * Description: This function alerts the adapter that it will be reset. 8931 * If memory space is not currently enabled, proceed directly 8932 * to running BIST on the adapter. The timer must always be started 8933 * so we guarantee we do not run BIST from ipr_isr. 8934 * 8935 * Return value: 8936 * IPR_RC_JOB_RETURN 8937 **/ 8938 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 8939 { 8940 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8941 u16 cmd_reg; 8942 int rc; 8943 8944 ENTER; 8945 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 8946 8947 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 8948 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 8949 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32); 8950 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 8951 } else { 8952 ipr_cmd->job_step = ipr_reset_block_config_access; 8953 } 8954 8955 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 8956 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 8957 8958 LEAVE; 8959 return IPR_RC_JOB_RETURN; 8960 } 8961 8962 /** 8963 * ipr_reset_quiesce_done - Complete IOA disconnect 8964 * @ipr_cmd: ipr command struct 8965 * 8966 * Description: Freeze the adapter to complete quiesce processing 8967 * 8968 * Return value: 8969 * IPR_RC_JOB_CONTINUE 8970 **/ 8971 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd) 8972 { 8973 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8974 8975 ENTER; 8976 ipr_cmd->job_step = ipr_ioa_bringdown_done; 8977 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 8978 LEAVE; 8979 return IPR_RC_JOB_CONTINUE; 8980 } 8981 8982 /** 8983 * ipr_reset_cancel_hcam_done - Check for outstanding commands 8984 * @ipr_cmd: ipr command struct 8985 * 8986 * Description: Ensure nothing is outstanding to the IOA and 8987 * proceed with IOA disconnect. Otherwise reset the IOA. 8988 * 8989 * Return value: 8990 * IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE 8991 **/ 8992 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd) 8993 { 8994 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8995 struct ipr_cmnd *loop_cmd; 8996 struct ipr_hrr_queue *hrrq; 8997 int rc = IPR_RC_JOB_CONTINUE; 8998 int count = 0; 8999 9000 ENTER; 9001 ipr_cmd->job_step = ipr_reset_quiesce_done; 9002 9003 for_each_hrrq(hrrq, ioa_cfg) { 9004 spin_lock(&hrrq->_lock); 9005 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) { 9006 count++; 9007 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 9008 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 9009 rc = IPR_RC_JOB_RETURN; 9010 break; 9011 } 9012 spin_unlock(&hrrq->_lock); 9013 9014 if (count) 9015 break; 9016 } 9017 9018 LEAVE; 9019 return rc; 9020 } 9021 9022 /** 9023 * ipr_reset_cancel_hcam - Cancel outstanding HCAMs 9024 * @ipr_cmd: ipr command struct 9025 * 9026 * Description: Cancel any oustanding HCAMs to the IOA. 9027 * 9028 * Return value: 9029 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 9030 **/ 9031 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd) 9032 { 9033 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9034 int rc = IPR_RC_JOB_CONTINUE; 9035 struct ipr_cmd_pkt *cmd_pkt; 9036 struct ipr_cmnd *hcam_cmd; 9037 struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ]; 9038 9039 ENTER; 9040 ipr_cmd->job_step = ipr_reset_cancel_hcam_done; 9041 9042 if (!hrrq->ioa_is_dead) { 9043 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) { 9044 list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) { 9045 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC) 9046 continue; 9047 9048 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 9049 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 9050 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 9051 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 9052 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST; 9053 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB; 9054 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff; 9055 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff; 9056 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff; 9057 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff; 9058 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff; 9059 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff; 9060 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff; 9061 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff; 9062 9063 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 9064 IPR_CANCEL_TIMEOUT); 9065 9066 rc = IPR_RC_JOB_RETURN; 9067 ipr_cmd->job_step = ipr_reset_cancel_hcam; 9068 break; 9069 } 9070 } 9071 } else 9072 ipr_cmd->job_step = ipr_reset_alert; 9073 9074 LEAVE; 9075 return rc; 9076 } 9077 9078 /** 9079 * ipr_reset_ucode_download_done - Microcode download completion 9080 * @ipr_cmd: ipr command struct 9081 * 9082 * Description: This function unmaps the microcode download buffer. 9083 * 9084 * Return value: 9085 * IPR_RC_JOB_CONTINUE 9086 **/ 9087 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 9088 { 9089 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9090 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 9091 9092 dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist, 9093 sglist->num_sg, DMA_TO_DEVICE); 9094 9095 ipr_cmd->job_step = ipr_reset_alert; 9096 return IPR_RC_JOB_CONTINUE; 9097 } 9098 9099 /** 9100 * ipr_reset_ucode_download - Download microcode to the adapter 9101 * @ipr_cmd: ipr command struct 9102 * 9103 * Description: This function checks to see if it there is microcode 9104 * to download to the adapter. If there is, a download is performed. 9105 * 9106 * Return value: 9107 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 9108 **/ 9109 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 9110 { 9111 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9112 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 9113 9114 ENTER; 9115 ipr_cmd->job_step = ipr_reset_alert; 9116 9117 if (!sglist) 9118 return IPR_RC_JOB_CONTINUE; 9119 9120 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 9121 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 9122 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 9123 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 9124 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 9125 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 9126 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 9127 9128 if (ioa_cfg->sis64) 9129 ipr_build_ucode_ioadl64(ipr_cmd, sglist); 9130 else 9131 ipr_build_ucode_ioadl(ipr_cmd, sglist); 9132 ipr_cmd->job_step = ipr_reset_ucode_download_done; 9133 9134 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 9135 IPR_WRITE_BUFFER_TIMEOUT); 9136 9137 LEAVE; 9138 return IPR_RC_JOB_RETURN; 9139 } 9140 9141 /** 9142 * ipr_reset_shutdown_ioa - Shutdown the adapter 9143 * @ipr_cmd: ipr command struct 9144 * 9145 * Description: This function issues an adapter shutdown of the 9146 * specified type to the specified adapter as part of the 9147 * adapter reset job. 9148 * 9149 * Return value: 9150 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 9151 **/ 9152 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 9153 { 9154 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9155 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 9156 unsigned long timeout; 9157 int rc = IPR_RC_JOB_CONTINUE; 9158 9159 ENTER; 9160 if (shutdown_type == IPR_SHUTDOWN_QUIESCE) 9161 ipr_cmd->job_step = ipr_reset_cancel_hcam; 9162 else if (shutdown_type != IPR_SHUTDOWN_NONE && 9163 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) { 9164 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 9165 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 9166 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 9167 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 9168 9169 if (shutdown_type == IPR_SHUTDOWN_NORMAL) 9170 timeout = IPR_SHUTDOWN_TIMEOUT; 9171 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 9172 timeout = IPR_INTERNAL_TIMEOUT; 9173 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 9174 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO; 9175 else 9176 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 9177 9178 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 9179 9180 rc = IPR_RC_JOB_RETURN; 9181 ipr_cmd->job_step = ipr_reset_ucode_download; 9182 } else 9183 ipr_cmd->job_step = ipr_reset_alert; 9184 9185 LEAVE; 9186 return rc; 9187 } 9188 9189 /** 9190 * ipr_reset_ioa_job - Adapter reset job 9191 * @ipr_cmd: ipr command struct 9192 * 9193 * Description: This function is the job router for the adapter reset job. 9194 * 9195 * Return value: 9196 * none 9197 **/ 9198 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 9199 { 9200 u32 rc, ioasc; 9201 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9202 9203 do { 9204 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 9205 9206 if (ioa_cfg->reset_cmd != ipr_cmd) { 9207 /* 9208 * We are doing nested adapter resets and this is 9209 * not the current reset job. 9210 */ 9211 list_add_tail(&ipr_cmd->queue, 9212 &ipr_cmd->hrrq->hrrq_free_q); 9213 return; 9214 } 9215 9216 if (IPR_IOASC_SENSE_KEY(ioasc)) { 9217 rc = ipr_cmd->job_step_failed(ipr_cmd); 9218 if (rc == IPR_RC_JOB_RETURN) 9219 return; 9220 } 9221 9222 ipr_reinit_ipr_cmnd(ipr_cmd); 9223 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 9224 rc = ipr_cmd->job_step(ipr_cmd); 9225 } while (rc == IPR_RC_JOB_CONTINUE); 9226 } 9227 9228 /** 9229 * _ipr_initiate_ioa_reset - Initiate an adapter reset 9230 * @ioa_cfg: ioa config struct 9231 * @job_step: first job step of reset job 9232 * @shutdown_type: shutdown type 9233 * 9234 * Description: This function will initiate the reset of the given adapter 9235 * starting at the selected job step. 9236 * If the caller needs to wait on the completion of the reset, 9237 * the caller must sleep on the reset_wait_q. 9238 * 9239 * Return value: 9240 * none 9241 **/ 9242 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 9243 int (*job_step) (struct ipr_cmnd *), 9244 enum ipr_shutdown_type shutdown_type) 9245 { 9246 struct ipr_cmnd *ipr_cmd; 9247 int i; 9248 9249 ioa_cfg->in_reset_reload = 1; 9250 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9251 spin_lock(&ioa_cfg->hrrq[i]._lock); 9252 ioa_cfg->hrrq[i].allow_cmds = 0; 9253 spin_unlock(&ioa_cfg->hrrq[i]._lock); 9254 } 9255 wmb(); 9256 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) { 9257 ioa_cfg->scsi_unblock = 0; 9258 ioa_cfg->scsi_blocked = 1; 9259 scsi_block_requests(ioa_cfg->host); 9260 } 9261 9262 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 9263 ioa_cfg->reset_cmd = ipr_cmd; 9264 ipr_cmd->job_step = job_step; 9265 ipr_cmd->u.shutdown_type = shutdown_type; 9266 9267 ipr_reset_ioa_job(ipr_cmd); 9268 } 9269 9270 /** 9271 * ipr_initiate_ioa_reset - Initiate an adapter reset 9272 * @ioa_cfg: ioa config struct 9273 * @shutdown_type: shutdown type 9274 * 9275 * Description: This function will initiate the reset of the given adapter. 9276 * If the caller needs to wait on the completion of the reset, 9277 * the caller must sleep on the reset_wait_q. 9278 * 9279 * Return value: 9280 * none 9281 **/ 9282 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 9283 enum ipr_shutdown_type shutdown_type) 9284 { 9285 int i; 9286 9287 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) 9288 return; 9289 9290 if (ioa_cfg->in_reset_reload) { 9291 if (ioa_cfg->sdt_state == GET_DUMP) 9292 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 9293 else if (ioa_cfg->sdt_state == READ_DUMP) 9294 ioa_cfg->sdt_state = ABORT_DUMP; 9295 } 9296 9297 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 9298 dev_err(&ioa_cfg->pdev->dev, 9299 "IOA taken offline - error recovery failed\n"); 9300 9301 ioa_cfg->reset_retries = 0; 9302 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9303 spin_lock(&ioa_cfg->hrrq[i]._lock); 9304 ioa_cfg->hrrq[i].ioa_is_dead = 1; 9305 spin_unlock(&ioa_cfg->hrrq[i]._lock); 9306 } 9307 wmb(); 9308 9309 if (ioa_cfg->in_ioa_bringdown) { 9310 ioa_cfg->reset_cmd = NULL; 9311 ioa_cfg->in_reset_reload = 0; 9312 ipr_fail_all_ops(ioa_cfg); 9313 wake_up_all(&ioa_cfg->reset_wait_q); 9314 9315 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) { 9316 ioa_cfg->scsi_unblock = 1; 9317 schedule_work(&ioa_cfg->work_q); 9318 } 9319 return; 9320 } else { 9321 ioa_cfg->in_ioa_bringdown = 1; 9322 shutdown_type = IPR_SHUTDOWN_NONE; 9323 } 9324 } 9325 9326 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 9327 shutdown_type); 9328 } 9329 9330 /** 9331 * ipr_reset_freeze - Hold off all I/O activity 9332 * @ipr_cmd: ipr command struct 9333 * 9334 * Description: If the PCI slot is frozen, hold off all I/O 9335 * activity; then, as soon as the slot is available again, 9336 * initiate an adapter reset. 9337 */ 9338 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 9339 { 9340 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9341 int i; 9342 9343 /* Disallow new interrupts, avoid loop */ 9344 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9345 spin_lock(&ioa_cfg->hrrq[i]._lock); 9346 ioa_cfg->hrrq[i].allow_interrupts = 0; 9347 spin_unlock(&ioa_cfg->hrrq[i]._lock); 9348 } 9349 wmb(); 9350 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q); 9351 ipr_cmd->done = ipr_reset_ioa_job; 9352 return IPR_RC_JOB_RETURN; 9353 } 9354 9355 /** 9356 * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled 9357 * @pdev: PCI device struct 9358 * 9359 * Description: This routine is called to tell us that the MMIO 9360 * access to the IOA has been restored 9361 */ 9362 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev) 9363 { 9364 unsigned long flags = 0; 9365 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9366 9367 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9368 if (!ioa_cfg->probe_done) 9369 pci_save_state(pdev); 9370 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9371 return PCI_ERS_RESULT_NEED_RESET; 9372 } 9373 9374 /** 9375 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 9376 * @pdev: PCI device struct 9377 * 9378 * Description: This routine is called to tell us that the PCI bus 9379 * is down. Can't do anything here, except put the device driver 9380 * into a holding pattern, waiting for the PCI bus to come back. 9381 */ 9382 static void ipr_pci_frozen(struct pci_dev *pdev) 9383 { 9384 unsigned long flags = 0; 9385 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9386 9387 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9388 if (ioa_cfg->probe_done) 9389 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 9390 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9391 } 9392 9393 /** 9394 * ipr_pci_slot_reset - Called when PCI slot has been reset. 9395 * @pdev: PCI device struct 9396 * 9397 * Description: This routine is called by the pci error recovery 9398 * code after the PCI slot has been reset, just before we 9399 * should resume normal operations. 9400 */ 9401 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 9402 { 9403 unsigned long flags = 0; 9404 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9405 9406 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9407 if (ioa_cfg->probe_done) { 9408 if (ioa_cfg->needs_warm_reset) 9409 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 9410 else 9411 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 9412 IPR_SHUTDOWN_NONE); 9413 } else 9414 wake_up_all(&ioa_cfg->eeh_wait_q); 9415 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9416 return PCI_ERS_RESULT_RECOVERED; 9417 } 9418 9419 /** 9420 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 9421 * @pdev: PCI device struct 9422 * 9423 * Description: This routine is called when the PCI bus has 9424 * permanently failed. 9425 */ 9426 static void ipr_pci_perm_failure(struct pci_dev *pdev) 9427 { 9428 unsigned long flags = 0; 9429 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9430 int i; 9431 9432 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9433 if (ioa_cfg->probe_done) { 9434 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 9435 ioa_cfg->sdt_state = ABORT_DUMP; 9436 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1; 9437 ioa_cfg->in_ioa_bringdown = 1; 9438 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9439 spin_lock(&ioa_cfg->hrrq[i]._lock); 9440 ioa_cfg->hrrq[i].allow_cmds = 0; 9441 spin_unlock(&ioa_cfg->hrrq[i]._lock); 9442 } 9443 wmb(); 9444 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 9445 } else 9446 wake_up_all(&ioa_cfg->eeh_wait_q); 9447 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9448 } 9449 9450 /** 9451 * ipr_pci_error_detected - Called when a PCI error is detected. 9452 * @pdev: PCI device struct 9453 * @state: PCI channel state 9454 * 9455 * Description: Called when a PCI error is detected. 9456 * 9457 * Return value: 9458 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 9459 */ 9460 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 9461 pci_channel_state_t state) 9462 { 9463 switch (state) { 9464 case pci_channel_io_frozen: 9465 ipr_pci_frozen(pdev); 9466 return PCI_ERS_RESULT_CAN_RECOVER; 9467 case pci_channel_io_perm_failure: 9468 ipr_pci_perm_failure(pdev); 9469 return PCI_ERS_RESULT_DISCONNECT; 9470 break; 9471 default: 9472 break; 9473 } 9474 return PCI_ERS_RESULT_NEED_RESET; 9475 } 9476 9477 /** 9478 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 9479 * @ioa_cfg: ioa cfg struct 9480 * 9481 * Description: This is the second phase of adapter initialization 9482 * This function takes care of initilizing the adapter to the point 9483 * where it can accept new commands. 9484 9485 * Return value: 9486 * 0 on success / -EIO on failure 9487 **/ 9488 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 9489 { 9490 int rc = 0; 9491 unsigned long host_lock_flags = 0; 9492 9493 ENTER; 9494 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 9495 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 9496 ioa_cfg->probe_done = 1; 9497 if (ioa_cfg->needs_hard_reset) { 9498 ioa_cfg->needs_hard_reset = 0; 9499 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 9500 } else 9501 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 9502 IPR_SHUTDOWN_NONE); 9503 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 9504 9505 LEAVE; 9506 return rc; 9507 } 9508 9509 /** 9510 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 9511 * @ioa_cfg: ioa config struct 9512 * 9513 * Return value: 9514 * none 9515 **/ 9516 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 9517 { 9518 int i; 9519 9520 if (ioa_cfg->ipr_cmnd_list) { 9521 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 9522 if (ioa_cfg->ipr_cmnd_list[i]) 9523 dma_pool_free(ioa_cfg->ipr_cmd_pool, 9524 ioa_cfg->ipr_cmnd_list[i], 9525 ioa_cfg->ipr_cmnd_list_dma[i]); 9526 9527 ioa_cfg->ipr_cmnd_list[i] = NULL; 9528 } 9529 } 9530 9531 if (ioa_cfg->ipr_cmd_pool) 9532 dma_pool_destroy(ioa_cfg->ipr_cmd_pool); 9533 9534 kfree(ioa_cfg->ipr_cmnd_list); 9535 kfree(ioa_cfg->ipr_cmnd_list_dma); 9536 ioa_cfg->ipr_cmnd_list = NULL; 9537 ioa_cfg->ipr_cmnd_list_dma = NULL; 9538 ioa_cfg->ipr_cmd_pool = NULL; 9539 } 9540 9541 /** 9542 * ipr_free_mem - Frees memory allocated for an adapter 9543 * @ioa_cfg: ioa cfg struct 9544 * 9545 * Return value: 9546 * nothing 9547 **/ 9548 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 9549 { 9550 int i; 9551 9552 kfree(ioa_cfg->res_entries); 9553 dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs), 9554 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 9555 ipr_free_cmd_blks(ioa_cfg); 9556 9557 for (i = 0; i < ioa_cfg->hrrq_num; i++) 9558 dma_free_coherent(&ioa_cfg->pdev->dev, 9559 sizeof(u32) * ioa_cfg->hrrq[i].size, 9560 ioa_cfg->hrrq[i].host_rrq, 9561 ioa_cfg->hrrq[i].host_rrq_dma); 9562 9563 dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size, 9564 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma); 9565 9566 for (i = 0; i < IPR_MAX_HCAMS; i++) { 9567 dma_free_coherent(&ioa_cfg->pdev->dev, 9568 sizeof(struct ipr_hostrcb), 9569 ioa_cfg->hostrcb[i], 9570 ioa_cfg->hostrcb_dma[i]); 9571 } 9572 9573 ipr_free_dump(ioa_cfg); 9574 kfree(ioa_cfg->trace); 9575 } 9576 9577 /** 9578 * ipr_free_irqs - Free all allocated IRQs for the adapter. 9579 * @ioa_cfg: ipr cfg struct 9580 * 9581 * This function frees all allocated IRQs for the 9582 * specified adapter. 9583 * 9584 * Return value: 9585 * none 9586 **/ 9587 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg) 9588 { 9589 struct pci_dev *pdev = ioa_cfg->pdev; 9590 int i; 9591 9592 for (i = 0; i < ioa_cfg->nvectors; i++) 9593 free_irq(pci_irq_vector(pdev, i), &ioa_cfg->hrrq[i]); 9594 pci_free_irq_vectors(pdev); 9595 } 9596 9597 /** 9598 * ipr_free_all_resources - Free all allocated resources for an adapter. 9599 * @ipr_cmd: ipr command struct 9600 * 9601 * This function frees all allocated resources for the 9602 * specified adapter. 9603 * 9604 * Return value: 9605 * none 9606 **/ 9607 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 9608 { 9609 struct pci_dev *pdev = ioa_cfg->pdev; 9610 9611 ENTER; 9612 ipr_free_irqs(ioa_cfg); 9613 if (ioa_cfg->reset_work_q) 9614 destroy_workqueue(ioa_cfg->reset_work_q); 9615 iounmap(ioa_cfg->hdw_dma_regs); 9616 pci_release_regions(pdev); 9617 ipr_free_mem(ioa_cfg); 9618 scsi_host_put(ioa_cfg->host); 9619 pci_disable_device(pdev); 9620 LEAVE; 9621 } 9622 9623 /** 9624 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 9625 * @ioa_cfg: ioa config struct 9626 * 9627 * Return value: 9628 * 0 on success / -ENOMEM on allocation failure 9629 **/ 9630 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 9631 { 9632 struct ipr_cmnd *ipr_cmd; 9633 struct ipr_ioarcb *ioarcb; 9634 dma_addr_t dma_addr; 9635 int i, entries_each_hrrq, hrrq_id = 0; 9636 9637 ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev, 9638 sizeof(struct ipr_cmnd), 512, 0); 9639 9640 if (!ioa_cfg->ipr_cmd_pool) 9641 return -ENOMEM; 9642 9643 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL); 9644 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL); 9645 9646 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) { 9647 ipr_free_cmd_blks(ioa_cfg); 9648 return -ENOMEM; 9649 } 9650 9651 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9652 if (ioa_cfg->hrrq_num > 1) { 9653 if (i == 0) { 9654 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS; 9655 ioa_cfg->hrrq[i].min_cmd_id = 0; 9656 ioa_cfg->hrrq[i].max_cmd_id = 9657 (entries_each_hrrq - 1); 9658 } else { 9659 entries_each_hrrq = 9660 IPR_NUM_BASE_CMD_BLKS/ 9661 (ioa_cfg->hrrq_num - 1); 9662 ioa_cfg->hrrq[i].min_cmd_id = 9663 IPR_NUM_INTERNAL_CMD_BLKS + 9664 (i - 1) * entries_each_hrrq; 9665 ioa_cfg->hrrq[i].max_cmd_id = 9666 (IPR_NUM_INTERNAL_CMD_BLKS + 9667 i * entries_each_hrrq - 1); 9668 } 9669 } else { 9670 entries_each_hrrq = IPR_NUM_CMD_BLKS; 9671 ioa_cfg->hrrq[i].min_cmd_id = 0; 9672 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1); 9673 } 9674 ioa_cfg->hrrq[i].size = entries_each_hrrq; 9675 } 9676 9677 BUG_ON(ioa_cfg->hrrq_num == 0); 9678 9679 i = IPR_NUM_CMD_BLKS - 9680 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1; 9681 if (i > 0) { 9682 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i; 9683 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i; 9684 } 9685 9686 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 9687 ipr_cmd = dma_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr); 9688 9689 if (!ipr_cmd) { 9690 ipr_free_cmd_blks(ioa_cfg); 9691 return -ENOMEM; 9692 } 9693 9694 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 9695 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 9696 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 9697 9698 ioarcb = &ipr_cmd->ioarcb; 9699 ipr_cmd->dma_addr = dma_addr; 9700 if (ioa_cfg->sis64) 9701 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr); 9702 else 9703 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 9704 9705 ioarcb->host_response_handle = cpu_to_be32(i << 2); 9706 if (ioa_cfg->sis64) { 9707 ioarcb->u.sis64_addr_data.data_ioadl_addr = 9708 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 9709 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr = 9710 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64)); 9711 } else { 9712 ioarcb->write_ioadl_addr = 9713 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 9714 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 9715 ioarcb->ioasa_host_pci_addr = 9716 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa)); 9717 } 9718 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 9719 ipr_cmd->cmd_index = i; 9720 ipr_cmd->ioa_cfg = ioa_cfg; 9721 ipr_cmd->sense_buffer_dma = dma_addr + 9722 offsetof(struct ipr_cmnd, sense_buffer); 9723 9724 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id; 9725 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id]; 9726 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 9727 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id) 9728 hrrq_id++; 9729 } 9730 9731 return 0; 9732 } 9733 9734 /** 9735 * ipr_alloc_mem - Allocate memory for an adapter 9736 * @ioa_cfg: ioa config struct 9737 * 9738 * Return value: 9739 * 0 on success / non-zero for error 9740 **/ 9741 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 9742 { 9743 struct pci_dev *pdev = ioa_cfg->pdev; 9744 int i, rc = -ENOMEM; 9745 9746 ENTER; 9747 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * 9748 ioa_cfg->max_devs_supported, GFP_KERNEL); 9749 9750 if (!ioa_cfg->res_entries) 9751 goto out; 9752 9753 for (i = 0; i < ioa_cfg->max_devs_supported; i++) { 9754 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 9755 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg; 9756 } 9757 9758 ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev, 9759 sizeof(struct ipr_misc_cbs), 9760 &ioa_cfg->vpd_cbs_dma, 9761 GFP_KERNEL); 9762 9763 if (!ioa_cfg->vpd_cbs) 9764 goto out_free_res_entries; 9765 9766 if (ipr_alloc_cmd_blks(ioa_cfg)) 9767 goto out_free_vpd_cbs; 9768 9769 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9770 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev, 9771 sizeof(u32) * ioa_cfg->hrrq[i].size, 9772 &ioa_cfg->hrrq[i].host_rrq_dma, 9773 GFP_KERNEL); 9774 9775 if (!ioa_cfg->hrrq[i].host_rrq) { 9776 while (--i > 0) 9777 dma_free_coherent(&pdev->dev, 9778 sizeof(u32) * ioa_cfg->hrrq[i].size, 9779 ioa_cfg->hrrq[i].host_rrq, 9780 ioa_cfg->hrrq[i].host_rrq_dma); 9781 goto out_ipr_free_cmd_blocks; 9782 } 9783 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg; 9784 } 9785 9786 ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev, 9787 ioa_cfg->cfg_table_size, 9788 &ioa_cfg->cfg_table_dma, 9789 GFP_KERNEL); 9790 9791 if (!ioa_cfg->u.cfg_table) 9792 goto out_free_host_rrq; 9793 9794 for (i = 0; i < IPR_MAX_HCAMS; i++) { 9795 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev, 9796 sizeof(struct ipr_hostrcb), 9797 &ioa_cfg->hostrcb_dma[i], 9798 GFP_KERNEL); 9799 9800 if (!ioa_cfg->hostrcb[i]) 9801 goto out_free_hostrcb_dma; 9802 9803 ioa_cfg->hostrcb[i]->hostrcb_dma = 9804 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 9805 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg; 9806 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 9807 } 9808 9809 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * 9810 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 9811 9812 if (!ioa_cfg->trace) 9813 goto out_free_hostrcb_dma; 9814 9815 rc = 0; 9816 out: 9817 LEAVE; 9818 return rc; 9819 9820 out_free_hostrcb_dma: 9821 while (i-- > 0) { 9822 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb), 9823 ioa_cfg->hostrcb[i], 9824 ioa_cfg->hostrcb_dma[i]); 9825 } 9826 dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size, 9827 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma); 9828 out_free_host_rrq: 9829 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 9830 dma_free_coherent(&pdev->dev, 9831 sizeof(u32) * ioa_cfg->hrrq[i].size, 9832 ioa_cfg->hrrq[i].host_rrq, 9833 ioa_cfg->hrrq[i].host_rrq_dma); 9834 } 9835 out_ipr_free_cmd_blocks: 9836 ipr_free_cmd_blks(ioa_cfg); 9837 out_free_vpd_cbs: 9838 dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs), 9839 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 9840 out_free_res_entries: 9841 kfree(ioa_cfg->res_entries); 9842 goto out; 9843 } 9844 9845 /** 9846 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 9847 * @ioa_cfg: ioa config struct 9848 * 9849 * Return value: 9850 * none 9851 **/ 9852 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 9853 { 9854 int i; 9855 9856 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 9857 ioa_cfg->bus_attr[i].bus = i; 9858 ioa_cfg->bus_attr[i].qas_enabled = 0; 9859 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 9860 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 9861 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 9862 else 9863 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 9864 } 9865 } 9866 9867 /** 9868 * ipr_init_regs - Initialize IOA registers 9869 * @ioa_cfg: ioa config struct 9870 * 9871 * Return value: 9872 * none 9873 **/ 9874 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg) 9875 { 9876 const struct ipr_interrupt_offsets *p; 9877 struct ipr_interrupts *t; 9878 void __iomem *base; 9879 9880 p = &ioa_cfg->chip_cfg->regs; 9881 t = &ioa_cfg->regs; 9882 base = ioa_cfg->hdw_dma_regs; 9883 9884 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 9885 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 9886 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32; 9887 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 9888 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32; 9889 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 9890 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32; 9891 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 9892 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32; 9893 t->ioarrin_reg = base + p->ioarrin_reg; 9894 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 9895 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32; 9896 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 9897 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32; 9898 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 9899 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32; 9900 9901 if (ioa_cfg->sis64) { 9902 t->init_feedback_reg = base + p->init_feedback_reg; 9903 t->dump_addr_reg = base + p->dump_addr_reg; 9904 t->dump_data_reg = base + p->dump_data_reg; 9905 t->endian_swap_reg = base + p->endian_swap_reg; 9906 } 9907 } 9908 9909 /** 9910 * ipr_init_ioa_cfg - Initialize IOA config struct 9911 * @ioa_cfg: ioa config struct 9912 * @host: scsi host struct 9913 * @pdev: PCI dev struct 9914 * 9915 * Return value: 9916 * none 9917 **/ 9918 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 9919 struct Scsi_Host *host, struct pci_dev *pdev) 9920 { 9921 int i; 9922 9923 ioa_cfg->host = host; 9924 ioa_cfg->pdev = pdev; 9925 ioa_cfg->log_level = ipr_log_level; 9926 ioa_cfg->doorbell = IPR_DOORBELL; 9927 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 9928 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 9929 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 9930 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 9931 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 9932 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 9933 9934 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 9935 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 9936 INIT_LIST_HEAD(&ioa_cfg->hostrcb_report_q); 9937 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 9938 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 9939 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread); 9940 init_waitqueue_head(&ioa_cfg->reset_wait_q); 9941 init_waitqueue_head(&ioa_cfg->msi_wait_q); 9942 init_waitqueue_head(&ioa_cfg->eeh_wait_q); 9943 ioa_cfg->sdt_state = INACTIVE; 9944 9945 ipr_initialize_bus_attr(ioa_cfg); 9946 ioa_cfg->max_devs_supported = ipr_max_devs; 9947 9948 if (ioa_cfg->sis64) { 9949 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS; 9950 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET; 9951 if (ipr_max_devs > IPR_MAX_SIS64_DEVS) 9952 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS; 9953 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64) 9954 + ((sizeof(struct ipr_config_table_entry64) 9955 * ioa_cfg->max_devs_supported))); 9956 } else { 9957 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 9958 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 9959 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS) 9960 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS; 9961 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr) 9962 + ((sizeof(struct ipr_config_table_entry) 9963 * ioa_cfg->max_devs_supported))); 9964 } 9965 9966 host->max_channel = IPR_VSET_BUS; 9967 host->unique_id = host->host_no; 9968 host->max_cmd_len = IPR_MAX_CDB_LEN; 9969 host->can_queue = ioa_cfg->max_cmds; 9970 pci_set_drvdata(pdev, ioa_cfg); 9971 9972 for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) { 9973 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q); 9974 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q); 9975 spin_lock_init(&ioa_cfg->hrrq[i]._lock); 9976 if (i == 0) 9977 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock; 9978 else 9979 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock; 9980 } 9981 } 9982 9983 /** 9984 * ipr_get_chip_info - Find adapter chip information 9985 * @dev_id: PCI device id struct 9986 * 9987 * Return value: 9988 * ptr to chip information on success / NULL on failure 9989 **/ 9990 static const struct ipr_chip_t * 9991 ipr_get_chip_info(const struct pci_device_id *dev_id) 9992 { 9993 int i; 9994 9995 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 9996 if (ipr_chip[i].vendor == dev_id->vendor && 9997 ipr_chip[i].device == dev_id->device) 9998 return &ipr_chip[i]; 9999 return NULL; 10000 } 10001 10002 /** 10003 * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete 10004 * during probe time 10005 * @ioa_cfg: ioa config struct 10006 * 10007 * Return value: 10008 * None 10009 **/ 10010 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg) 10011 { 10012 struct pci_dev *pdev = ioa_cfg->pdev; 10013 10014 if (pci_channel_offline(pdev)) { 10015 wait_event_timeout(ioa_cfg->eeh_wait_q, 10016 !pci_channel_offline(pdev), 10017 IPR_PCI_ERROR_RECOVERY_TIMEOUT); 10018 pci_restore_state(pdev); 10019 } 10020 } 10021 10022 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg) 10023 { 10024 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1; 10025 10026 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) { 10027 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n, 10028 "host%d-%d", ioa_cfg->host->host_no, vec_idx); 10029 ioa_cfg->vectors_info[vec_idx]. 10030 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0; 10031 } 10032 } 10033 10034 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg, 10035 struct pci_dev *pdev) 10036 { 10037 int i, rc; 10038 10039 for (i = 1; i < ioa_cfg->nvectors; i++) { 10040 rc = request_irq(pci_irq_vector(pdev, i), 10041 ipr_isr_mhrrq, 10042 0, 10043 ioa_cfg->vectors_info[i].desc, 10044 &ioa_cfg->hrrq[i]); 10045 if (rc) { 10046 while (--i >= 0) 10047 free_irq(pci_irq_vector(pdev, i), 10048 &ioa_cfg->hrrq[i]); 10049 return rc; 10050 } 10051 } 10052 return 0; 10053 } 10054 10055 /** 10056 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi(). 10057 * @pdev: PCI device struct 10058 * 10059 * Description: Simply set the msi_received flag to 1 indicating that 10060 * Message Signaled Interrupts are supported. 10061 * 10062 * Return value: 10063 * 0 on success / non-zero on failure 10064 **/ 10065 static irqreturn_t ipr_test_intr(int irq, void *devp) 10066 { 10067 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 10068 unsigned long lock_flags = 0; 10069 irqreturn_t rc = IRQ_HANDLED; 10070 10071 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq); 10072 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10073 10074 ioa_cfg->msi_received = 1; 10075 wake_up(&ioa_cfg->msi_wait_q); 10076 10077 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10078 return rc; 10079 } 10080 10081 /** 10082 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support. 10083 * @pdev: PCI device struct 10084 * 10085 * Description: This routine sets up and initiates a test interrupt to determine 10086 * if the interrupt is received via the ipr_test_intr() service routine. 10087 * If the tests fails, the driver will fall back to LSI. 10088 * 10089 * Return value: 10090 * 0 on success / non-zero on failure 10091 **/ 10092 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev) 10093 { 10094 int rc; 10095 volatile u32 int_reg; 10096 unsigned long lock_flags = 0; 10097 int irq = pci_irq_vector(pdev, 0); 10098 10099 ENTER; 10100 10101 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10102 init_waitqueue_head(&ioa_cfg->msi_wait_q); 10103 ioa_cfg->msi_received = 0; 10104 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 10105 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32); 10106 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 10107 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10108 10109 rc = request_irq(irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg); 10110 if (rc) { 10111 dev_err(&pdev->dev, "Can not assign irq %d\n", irq); 10112 return rc; 10113 } else if (ipr_debug) 10114 dev_info(&pdev->dev, "IRQ assigned: %d\n", irq); 10115 10116 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32); 10117 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 10118 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ); 10119 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10120 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 10121 10122 if (!ioa_cfg->msi_received) { 10123 /* MSI test failed */ 10124 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n"); 10125 rc = -EOPNOTSUPP; 10126 } else if (ipr_debug) 10127 dev_info(&pdev->dev, "MSI test succeeded.\n"); 10128 10129 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10130 10131 free_irq(irq, ioa_cfg); 10132 10133 LEAVE; 10134 10135 return rc; 10136 } 10137 10138 /* ipr_probe_ioa - Allocates memory and does first stage of initialization 10139 * @pdev: PCI device struct 10140 * @dev_id: PCI device id struct 10141 * 10142 * Return value: 10143 * 0 on success / non-zero on failure 10144 **/ 10145 static int ipr_probe_ioa(struct pci_dev *pdev, 10146 const struct pci_device_id *dev_id) 10147 { 10148 struct ipr_ioa_cfg *ioa_cfg; 10149 struct Scsi_Host *host; 10150 unsigned long ipr_regs_pci; 10151 void __iomem *ipr_regs; 10152 int rc = PCIBIOS_SUCCESSFUL; 10153 volatile u32 mask, uproc, interrupts; 10154 unsigned long lock_flags, driver_lock_flags; 10155 unsigned int irq_flag; 10156 10157 ENTER; 10158 10159 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 10160 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 10161 10162 if (!host) { 10163 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 10164 rc = -ENOMEM; 10165 goto out; 10166 } 10167 10168 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 10169 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 10170 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops); 10171 10172 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id); 10173 10174 if (!ioa_cfg->ipr_chip) { 10175 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 10176 dev_id->vendor, dev_id->device); 10177 goto out_scsi_host_put; 10178 } 10179 10180 /* set SIS 32 or SIS 64 */ 10181 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0; 10182 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg; 10183 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr; 10184 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds; 10185 10186 if (ipr_transop_timeout) 10187 ioa_cfg->transop_timeout = ipr_transop_timeout; 10188 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT) 10189 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT; 10190 else 10191 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT; 10192 10193 ioa_cfg->revid = pdev->revision; 10194 10195 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 10196 10197 ipr_regs_pci = pci_resource_start(pdev, 0); 10198 10199 rc = pci_request_regions(pdev, IPR_NAME); 10200 if (rc < 0) { 10201 dev_err(&pdev->dev, 10202 "Couldn't register memory range of registers\n"); 10203 goto out_scsi_host_put; 10204 } 10205 10206 rc = pci_enable_device(pdev); 10207 10208 if (rc || pci_channel_offline(pdev)) { 10209 if (pci_channel_offline(pdev)) { 10210 ipr_wait_for_pci_err_recovery(ioa_cfg); 10211 rc = pci_enable_device(pdev); 10212 } 10213 10214 if (rc) { 10215 dev_err(&pdev->dev, "Cannot enable adapter\n"); 10216 ipr_wait_for_pci_err_recovery(ioa_cfg); 10217 goto out_release_regions; 10218 } 10219 } 10220 10221 ipr_regs = pci_ioremap_bar(pdev, 0); 10222 10223 if (!ipr_regs) { 10224 dev_err(&pdev->dev, 10225 "Couldn't map memory range of registers\n"); 10226 rc = -ENOMEM; 10227 goto out_disable; 10228 } 10229 10230 ioa_cfg->hdw_dma_regs = ipr_regs; 10231 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 10232 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 10233 10234 ipr_init_regs(ioa_cfg); 10235 10236 if (ioa_cfg->sis64) { 10237 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 10238 if (rc < 0) { 10239 dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n"); 10240 rc = dma_set_mask_and_coherent(&pdev->dev, 10241 DMA_BIT_MASK(32)); 10242 } 10243 } else 10244 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 10245 10246 if (rc < 0) { 10247 dev_err(&pdev->dev, "Failed to set DMA mask\n"); 10248 goto cleanup_nomem; 10249 } 10250 10251 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 10252 ioa_cfg->chip_cfg->cache_line_size); 10253 10254 if (rc != PCIBIOS_SUCCESSFUL) { 10255 dev_err(&pdev->dev, "Write of cache line size failed\n"); 10256 ipr_wait_for_pci_err_recovery(ioa_cfg); 10257 rc = -EIO; 10258 goto cleanup_nomem; 10259 } 10260 10261 /* Issue MMIO read to ensure card is not in EEH */ 10262 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg); 10263 ipr_wait_for_pci_err_recovery(ioa_cfg); 10264 10265 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) { 10266 dev_err(&pdev->dev, "The max number of MSIX is %d\n", 10267 IPR_MAX_MSIX_VECTORS); 10268 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS; 10269 } 10270 10271 irq_flag = PCI_IRQ_LEGACY; 10272 if (ioa_cfg->ipr_chip->has_msi) 10273 irq_flag |= PCI_IRQ_MSI | PCI_IRQ_MSIX; 10274 rc = pci_alloc_irq_vectors(pdev, 1, ipr_number_of_msix, irq_flag); 10275 if (rc < 0) { 10276 ipr_wait_for_pci_err_recovery(ioa_cfg); 10277 goto cleanup_nomem; 10278 } 10279 ioa_cfg->nvectors = rc; 10280 10281 if (!pdev->msi_enabled && !pdev->msix_enabled) 10282 ioa_cfg->clear_isr = 1; 10283 10284 pci_set_master(pdev); 10285 10286 if (pci_channel_offline(pdev)) { 10287 ipr_wait_for_pci_err_recovery(ioa_cfg); 10288 pci_set_master(pdev); 10289 if (pci_channel_offline(pdev)) { 10290 rc = -EIO; 10291 goto out_msi_disable; 10292 } 10293 } 10294 10295 if (pdev->msi_enabled || pdev->msix_enabled) { 10296 rc = ipr_test_msi(ioa_cfg, pdev); 10297 switch (rc) { 10298 case 0: 10299 dev_info(&pdev->dev, 10300 "Request for %d MSI%ss succeeded.", ioa_cfg->nvectors, 10301 pdev->msix_enabled ? "-X" : ""); 10302 break; 10303 case -EOPNOTSUPP: 10304 ipr_wait_for_pci_err_recovery(ioa_cfg); 10305 pci_free_irq_vectors(pdev); 10306 10307 ioa_cfg->nvectors = 1; 10308 ioa_cfg->clear_isr = 1; 10309 break; 10310 default: 10311 goto out_msi_disable; 10312 } 10313 } 10314 10315 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors, 10316 (unsigned int)num_online_cpus(), 10317 (unsigned int)IPR_MAX_HRRQ_NUM); 10318 10319 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 10320 goto out_msi_disable; 10321 10322 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 10323 goto out_msi_disable; 10324 10325 rc = ipr_alloc_mem(ioa_cfg); 10326 if (rc < 0) { 10327 dev_err(&pdev->dev, 10328 "Couldn't allocate enough memory for device driver!\n"); 10329 goto out_msi_disable; 10330 } 10331 10332 /* Save away PCI config space for use following IOA reset */ 10333 rc = pci_save_state(pdev); 10334 10335 if (rc != PCIBIOS_SUCCESSFUL) { 10336 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 10337 rc = -EIO; 10338 goto cleanup_nolog; 10339 } 10340 10341 /* 10342 * If HRRQ updated interrupt is not masked, or reset alert is set, 10343 * the card is in an unknown state and needs a hard reset 10344 */ 10345 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 10346 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32); 10347 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); 10348 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 10349 ioa_cfg->needs_hard_reset = 1; 10350 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices) 10351 ioa_cfg->needs_hard_reset = 1; 10352 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED) 10353 ioa_cfg->ioa_unit_checked = 1; 10354 10355 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10356 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 10357 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10358 10359 if (pdev->msi_enabled || pdev->msix_enabled) { 10360 name_msi_vectors(ioa_cfg); 10361 rc = request_irq(pci_irq_vector(pdev, 0), ipr_isr, 0, 10362 ioa_cfg->vectors_info[0].desc, 10363 &ioa_cfg->hrrq[0]); 10364 if (!rc) 10365 rc = ipr_request_other_msi_irqs(ioa_cfg, pdev); 10366 } else { 10367 rc = request_irq(pdev->irq, ipr_isr, 10368 IRQF_SHARED, 10369 IPR_NAME, &ioa_cfg->hrrq[0]); 10370 } 10371 if (rc) { 10372 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 10373 pdev->irq, rc); 10374 goto cleanup_nolog; 10375 } 10376 10377 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) || 10378 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) { 10379 ioa_cfg->needs_warm_reset = 1; 10380 ioa_cfg->reset = ipr_reset_slot_reset; 10381 10382 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d", 10383 WQ_MEM_RECLAIM, host->host_no); 10384 10385 if (!ioa_cfg->reset_work_q) { 10386 dev_err(&pdev->dev, "Couldn't register reset workqueue\n"); 10387 rc = -ENOMEM; 10388 goto out_free_irq; 10389 } 10390 } else 10391 ioa_cfg->reset = ipr_reset_start_bist; 10392 10393 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); 10394 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 10395 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); 10396 10397 LEAVE; 10398 out: 10399 return rc; 10400 10401 out_free_irq: 10402 ipr_free_irqs(ioa_cfg); 10403 cleanup_nolog: 10404 ipr_free_mem(ioa_cfg); 10405 out_msi_disable: 10406 ipr_wait_for_pci_err_recovery(ioa_cfg); 10407 pci_free_irq_vectors(pdev); 10408 cleanup_nomem: 10409 iounmap(ipr_regs); 10410 out_disable: 10411 pci_disable_device(pdev); 10412 out_release_regions: 10413 pci_release_regions(pdev); 10414 out_scsi_host_put: 10415 scsi_host_put(host); 10416 goto out; 10417 } 10418 10419 /** 10420 * ipr_initiate_ioa_bringdown - Bring down an adapter 10421 * @ioa_cfg: ioa config struct 10422 * @shutdown_type: shutdown type 10423 * 10424 * Description: This function will initiate bringing down the adapter. 10425 * This consists of issuing an IOA shutdown to the adapter 10426 * to flush the cache, and running BIST. 10427 * If the caller needs to wait on the completion of the reset, 10428 * the caller must sleep on the reset_wait_q. 10429 * 10430 * Return value: 10431 * none 10432 **/ 10433 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 10434 enum ipr_shutdown_type shutdown_type) 10435 { 10436 ENTER; 10437 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 10438 ioa_cfg->sdt_state = ABORT_DUMP; 10439 ioa_cfg->reset_retries = 0; 10440 ioa_cfg->in_ioa_bringdown = 1; 10441 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 10442 LEAVE; 10443 } 10444 10445 /** 10446 * __ipr_remove - Remove a single adapter 10447 * @pdev: pci device struct 10448 * 10449 * Adapter hot plug remove entry point. 10450 * 10451 * Return value: 10452 * none 10453 **/ 10454 static void __ipr_remove(struct pci_dev *pdev) 10455 { 10456 unsigned long host_lock_flags = 0; 10457 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 10458 int i; 10459 unsigned long driver_lock_flags; 10460 ENTER; 10461 10462 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 10463 while (ioa_cfg->in_reset_reload) { 10464 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 10465 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 10466 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 10467 } 10468 10469 for (i = 0; i < ioa_cfg->hrrq_num; i++) { 10470 spin_lock(&ioa_cfg->hrrq[i]._lock); 10471 ioa_cfg->hrrq[i].removing_ioa = 1; 10472 spin_unlock(&ioa_cfg->hrrq[i]._lock); 10473 } 10474 wmb(); 10475 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 10476 10477 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 10478 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 10479 flush_work(&ioa_cfg->work_q); 10480 if (ioa_cfg->reset_work_q) 10481 flush_workqueue(ioa_cfg->reset_work_q); 10482 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 10483 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 10484 10485 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); 10486 list_del(&ioa_cfg->queue); 10487 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); 10488 10489 if (ioa_cfg->sdt_state == ABORT_DUMP) 10490 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 10491 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 10492 10493 ipr_free_all_resources(ioa_cfg); 10494 10495 LEAVE; 10496 } 10497 10498 /** 10499 * ipr_remove - IOA hot plug remove entry point 10500 * @pdev: pci device struct 10501 * 10502 * Adapter hot plug remove entry point. 10503 * 10504 * Return value: 10505 * none 10506 **/ 10507 static void ipr_remove(struct pci_dev *pdev) 10508 { 10509 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 10510 10511 ENTER; 10512 10513 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 10514 &ipr_trace_attr); 10515 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj, 10516 &ipr_dump_attr); 10517 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj, 10518 &ipr_ioa_async_err_log); 10519 scsi_remove_host(ioa_cfg->host); 10520 10521 __ipr_remove(pdev); 10522 10523 LEAVE; 10524 } 10525 10526 /** 10527 * ipr_probe - Adapter hot plug add entry point 10528 * 10529 * Return value: 10530 * 0 on success / non-zero on failure 10531 **/ 10532 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) 10533 { 10534 struct ipr_ioa_cfg *ioa_cfg; 10535 unsigned long flags; 10536 int rc, i; 10537 10538 rc = ipr_probe_ioa(pdev, dev_id); 10539 10540 if (rc) 10541 return rc; 10542 10543 ioa_cfg = pci_get_drvdata(pdev); 10544 rc = ipr_probe_ioa_part2(ioa_cfg); 10545 10546 if (rc) { 10547 __ipr_remove(pdev); 10548 return rc; 10549 } 10550 10551 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 10552 10553 if (rc) { 10554 __ipr_remove(pdev); 10555 return rc; 10556 } 10557 10558 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj, 10559 &ipr_trace_attr); 10560 10561 if (rc) { 10562 scsi_remove_host(ioa_cfg->host); 10563 __ipr_remove(pdev); 10564 return rc; 10565 } 10566 10567 rc = sysfs_create_bin_file(&ioa_cfg->host->shost_dev.kobj, 10568 &ipr_ioa_async_err_log); 10569 10570 if (rc) { 10571 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj, 10572 &ipr_dump_attr); 10573 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 10574 &ipr_trace_attr); 10575 scsi_remove_host(ioa_cfg->host); 10576 __ipr_remove(pdev); 10577 return rc; 10578 } 10579 10580 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj, 10581 &ipr_dump_attr); 10582 10583 if (rc) { 10584 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj, 10585 &ipr_ioa_async_err_log); 10586 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 10587 &ipr_trace_attr); 10588 scsi_remove_host(ioa_cfg->host); 10589 __ipr_remove(pdev); 10590 return rc; 10591 } 10592 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 10593 ioa_cfg->scan_enabled = 1; 10594 schedule_work(&ioa_cfg->work_q); 10595 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 10596 10597 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight; 10598 10599 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 10600 for (i = 1; i < ioa_cfg->hrrq_num; i++) { 10601 irq_poll_init(&ioa_cfg->hrrq[i].iopoll, 10602 ioa_cfg->iopoll_weight, ipr_iopoll); 10603 } 10604 } 10605 10606 scsi_scan_host(ioa_cfg->host); 10607 10608 return 0; 10609 } 10610 10611 /** 10612 * ipr_shutdown - Shutdown handler. 10613 * @pdev: pci device struct 10614 * 10615 * This function is invoked upon system shutdown/reboot. It will issue 10616 * an adapter shutdown to the adapter to flush the write cache. 10617 * 10618 * Return value: 10619 * none 10620 **/ 10621 static void ipr_shutdown(struct pci_dev *pdev) 10622 { 10623 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 10624 unsigned long lock_flags = 0; 10625 enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL; 10626 int i; 10627 10628 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10629 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) { 10630 ioa_cfg->iopoll_weight = 0; 10631 for (i = 1; i < ioa_cfg->hrrq_num; i++) 10632 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll); 10633 } 10634 10635 while (ioa_cfg->in_reset_reload) { 10636 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10637 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 10638 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 10639 } 10640 10641 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) 10642 shutdown_type = IPR_SHUTDOWN_QUIESCE; 10643 10644 ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type); 10645 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 10646 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 10647 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) { 10648 ipr_free_irqs(ioa_cfg); 10649 pci_disable_device(ioa_cfg->pdev); 10650 } 10651 } 10652 10653 static struct pci_device_id ipr_pci_table[] = { 10654 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 10655 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 }, 10656 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 10657 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 }, 10658 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 10659 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 }, 10660 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 10661 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 }, 10662 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 10663 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 }, 10664 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 10665 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 }, 10666 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 10667 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 }, 10668 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 10669 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 10670 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10671 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 10672 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 10673 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 10674 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 10675 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10676 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 10677 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 10678 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10679 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 10680 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 10681 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 10682 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 10683 IPR_USE_LONG_TRANSOP_TIMEOUT}, 10684 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 10685 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 10686 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10687 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 10688 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 10689 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10690 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 10691 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 }, 10692 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 10693 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 }, 10694 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 10695 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 10696 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET }, 10697 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 10698 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 }, 10699 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 10700 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 }, 10701 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 10702 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 10703 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10704 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 10705 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 10706 IPR_USE_LONG_TRANSOP_TIMEOUT }, 10707 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10708 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 }, 10709 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10710 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 }, 10711 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10712 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 }, 10713 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10714 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 }, 10715 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10716 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 }, 10717 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 10718 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 }, 10719 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10720 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 }, 10721 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10722 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 }, 10723 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10724 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 }, 10725 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10726 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 }, 10727 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10728 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 }, 10729 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10730 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 }, 10731 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10732 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 }, 10733 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10734 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 }, 10735 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10736 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 }, 10737 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10738 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 }, 10739 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10740 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 }, 10741 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10742 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 }, 10743 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10744 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 }, 10745 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10746 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 }, 10747 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10748 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 }, 10749 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10750 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 }, 10751 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10752 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 }, 10753 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10754 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 }, 10755 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10756 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 }, 10757 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 10758 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 }, 10759 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, 10760 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580A, 0, 0, 0 }, 10761 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, 10762 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580B, 0, 0, 0 }, 10763 { } 10764 }; 10765 MODULE_DEVICE_TABLE(pci, ipr_pci_table); 10766 10767 static const struct pci_error_handlers ipr_err_handler = { 10768 .error_detected = ipr_pci_error_detected, 10769 .mmio_enabled = ipr_pci_mmio_enabled, 10770 .slot_reset = ipr_pci_slot_reset, 10771 }; 10772 10773 static struct pci_driver ipr_driver = { 10774 .name = IPR_NAME, 10775 .id_table = ipr_pci_table, 10776 .probe = ipr_probe, 10777 .remove = ipr_remove, 10778 .shutdown = ipr_shutdown, 10779 .err_handler = &ipr_err_handler, 10780 }; 10781 10782 /** 10783 * ipr_halt_done - Shutdown prepare completion 10784 * 10785 * Return value: 10786 * none 10787 **/ 10788 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd) 10789 { 10790 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); 10791 } 10792 10793 /** 10794 * ipr_halt - Issue shutdown prepare to all adapters 10795 * 10796 * Return value: 10797 * NOTIFY_OK on success / NOTIFY_DONE on failure 10798 **/ 10799 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf) 10800 { 10801 struct ipr_cmnd *ipr_cmd; 10802 struct ipr_ioa_cfg *ioa_cfg; 10803 unsigned long flags = 0, driver_lock_flags; 10804 10805 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF) 10806 return NOTIFY_DONE; 10807 10808 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); 10809 10810 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) { 10811 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 10812 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds || 10813 (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) { 10814 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 10815 continue; 10816 } 10817 10818 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 10819 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 10820 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 10821 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 10822 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 10823 10824 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 10825 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 10826 } 10827 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); 10828 10829 return NOTIFY_OK; 10830 } 10831 10832 static struct notifier_block ipr_notifier = { 10833 ipr_halt, NULL, 0 10834 }; 10835 10836 /** 10837 * ipr_init - Module entry point 10838 * 10839 * Return value: 10840 * 0 on success / negative value on failure 10841 **/ 10842 static int __init ipr_init(void) 10843 { 10844 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 10845 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 10846 10847 register_reboot_notifier(&ipr_notifier); 10848 return pci_register_driver(&ipr_driver); 10849 } 10850 10851 /** 10852 * ipr_exit - Module unload 10853 * 10854 * Module unload entry point. 10855 * 10856 * Return value: 10857 * none 10858 **/ 10859 static void __exit ipr_exit(void) 10860 { 10861 unregister_reboot_notifier(&ipr_notifier); 10862 pci_unregister_driver(&ipr_driver); 10863 } 10864 10865 module_init(ipr_init); 10866 module_exit(ipr_exit); 10867