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