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