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