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