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/ioport.h> 64 #include <linux/delay.h> 65 #include <linux/pci.h> 66 #include <linux/wait.h> 67 #include <linux/spinlock.h> 68 #include <linux/sched.h> 69 #include <linux/interrupt.h> 70 #include <linux/blkdev.h> 71 #include <linux/firmware.h> 72 #include <linux/module.h> 73 #include <linux/moduleparam.h> 74 #include <linux/libata.h> 75 #include <linux/hdreg.h> 76 #include <linux/reboot.h> 77 #include <linux/stringify.h> 78 #include <asm/io.h> 79 #include <asm/irq.h> 80 #include <asm/processor.h> 81 #include <scsi/scsi.h> 82 #include <scsi/scsi_host.h> 83 #include <scsi/scsi_tcq.h> 84 #include <scsi/scsi_eh.h> 85 #include <scsi/scsi_cmnd.h> 86 #include "ipr.h" 87 88 /* 89 * Global Data 90 */ 91 static LIST_HEAD(ipr_ioa_head); 92 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL; 93 static unsigned int ipr_max_speed = 1; 94 static int ipr_testmode = 0; 95 static unsigned int ipr_fastfail = 0; 96 static unsigned int ipr_transop_timeout = 0; 97 static unsigned int ipr_debug = 0; 98 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS; 99 static unsigned int ipr_dual_ioa_raid = 1; 100 static DEFINE_SPINLOCK(ipr_driver_lock); 101 102 /* This table describes the differences between DMA controller chips */ 103 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { 104 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */ 105 .mailbox = 0x0042C, 106 .cache_line_size = 0x20, 107 { 108 .set_interrupt_mask_reg = 0x0022C, 109 .clr_interrupt_mask_reg = 0x00230, 110 .clr_interrupt_mask_reg32 = 0x00230, 111 .sense_interrupt_mask_reg = 0x0022C, 112 .sense_interrupt_mask_reg32 = 0x0022C, 113 .clr_interrupt_reg = 0x00228, 114 .clr_interrupt_reg32 = 0x00228, 115 .sense_interrupt_reg = 0x00224, 116 .sense_interrupt_reg32 = 0x00224, 117 .ioarrin_reg = 0x00404, 118 .sense_uproc_interrupt_reg = 0x00214, 119 .sense_uproc_interrupt_reg32 = 0x00214, 120 .set_uproc_interrupt_reg = 0x00214, 121 .set_uproc_interrupt_reg32 = 0x00214, 122 .clr_uproc_interrupt_reg = 0x00218, 123 .clr_uproc_interrupt_reg32 = 0x00218 124 } 125 }, 126 { /* Snipe and Scamp */ 127 .mailbox = 0x0052C, 128 .cache_line_size = 0x20, 129 { 130 .set_interrupt_mask_reg = 0x00288, 131 .clr_interrupt_mask_reg = 0x0028C, 132 .clr_interrupt_mask_reg32 = 0x0028C, 133 .sense_interrupt_mask_reg = 0x00288, 134 .sense_interrupt_mask_reg32 = 0x00288, 135 .clr_interrupt_reg = 0x00284, 136 .clr_interrupt_reg32 = 0x00284, 137 .sense_interrupt_reg = 0x00280, 138 .sense_interrupt_reg32 = 0x00280, 139 .ioarrin_reg = 0x00504, 140 .sense_uproc_interrupt_reg = 0x00290, 141 .sense_uproc_interrupt_reg32 = 0x00290, 142 .set_uproc_interrupt_reg = 0x00290, 143 .set_uproc_interrupt_reg32 = 0x00290, 144 .clr_uproc_interrupt_reg = 0x00294, 145 .clr_uproc_interrupt_reg32 = 0x00294 146 } 147 }, 148 { /* CRoC */ 149 .mailbox = 0x00044, 150 .cache_line_size = 0x20, 151 { 152 .set_interrupt_mask_reg = 0x00010, 153 .clr_interrupt_mask_reg = 0x00018, 154 .clr_interrupt_mask_reg32 = 0x0001C, 155 .sense_interrupt_mask_reg = 0x00010, 156 .sense_interrupt_mask_reg32 = 0x00014, 157 .clr_interrupt_reg = 0x00008, 158 .clr_interrupt_reg32 = 0x0000C, 159 .sense_interrupt_reg = 0x00000, 160 .sense_interrupt_reg32 = 0x00004, 161 .ioarrin_reg = 0x00070, 162 .sense_uproc_interrupt_reg = 0x00020, 163 .sense_uproc_interrupt_reg32 = 0x00024, 164 .set_uproc_interrupt_reg = 0x00020, 165 .set_uproc_interrupt_reg32 = 0x00024, 166 .clr_uproc_interrupt_reg = 0x00028, 167 .clr_uproc_interrupt_reg32 = 0x0002C, 168 .init_feedback_reg = 0x0005C, 169 .dump_addr_reg = 0x00064, 170 .dump_data_reg = 0x00068, 171 .endian_swap_reg = 0x00084 172 } 173 }, 174 }; 175 176 static const struct ipr_chip_t ipr_chip[] = { 177 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 178 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 179 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 180 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 181 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 182 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] }, 183 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] }, 184 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }, 185 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] } 186 }; 187 188 static int ipr_max_bus_speeds [] = { 189 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE 190 }; 191 192 MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); 193 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); 194 module_param_named(max_speed, ipr_max_speed, uint, 0); 195 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); 196 module_param_named(log_level, ipr_log_level, uint, 0); 197 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); 198 module_param_named(testmode, ipr_testmode, int, 0); 199 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); 200 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR); 201 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); 202 module_param_named(transop_timeout, ipr_transop_timeout, int, 0); 203 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); 204 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR); 205 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)"); 206 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0); 207 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)"); 208 module_param_named(max_devs, ipr_max_devs, int, 0); 209 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. " 210 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]"); 211 MODULE_LICENSE("GPL"); 212 MODULE_VERSION(IPR_DRIVER_VERSION); 213 214 /* A constant array of IOASCs/URCs/Error Messages */ 215 static const 216 struct ipr_error_table_t ipr_error_table[] = { 217 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL, 218 "8155: An unknown error was received"}, 219 {0x00330000, 0, 0, 220 "Soft underlength error"}, 221 {0x005A0000, 0, 0, 222 "Command to be cancelled not found"}, 223 {0x00808000, 0, 0, 224 "Qualified success"}, 225 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL, 226 "FFFE: Soft device bus error recovered by the IOA"}, 227 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL, 228 "4101: Soft device bus fabric error"}, 229 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL, 230 "FFFC: Logical block guard error recovered by the device"}, 231 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL, 232 "FFFC: Logical block reference tag error recovered by the device"}, 233 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL, 234 "4171: Recovered scatter list tag / sequence number error"}, 235 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL, 236 "FF3D: Recovered logical block CRC error on IOA to Host transfer"}, 237 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL, 238 "4171: Recovered logical block sequence number error on IOA to Host transfer"}, 239 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL, 240 "FFFD: Recovered logical block reference tag error detected by the IOA"}, 241 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL, 242 "FFFD: Logical block guard error recovered by the IOA"}, 243 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL, 244 "FFF9: Device sector reassign successful"}, 245 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL, 246 "FFF7: Media error recovered by device rewrite procedures"}, 247 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL, 248 "7001: IOA sector reassignment successful"}, 249 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL, 250 "FFF9: Soft media error. Sector reassignment recommended"}, 251 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL, 252 "FFF7: Media error recovered by IOA rewrite procedures"}, 253 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL, 254 "FF3D: Soft PCI bus error recovered by the IOA"}, 255 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL, 256 "FFF6: Device hardware error recovered by the IOA"}, 257 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL, 258 "FFF6: Device hardware error recovered by the device"}, 259 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL, 260 "FF3D: Soft IOA error recovered by the IOA"}, 261 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL, 262 "FFFA: Undefined device response recovered by the IOA"}, 263 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL, 264 "FFF6: Device bus error, message or command phase"}, 265 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL, 266 "FFFE: Task Management Function failed"}, 267 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL, 268 "FFF6: Failure prediction threshold exceeded"}, 269 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL, 270 "8009: Impending cache battery pack failure"}, 271 {0x02040400, 0, 0, 272 "34FF: Disk device format in progress"}, 273 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL, 274 "9070: IOA requested reset"}, 275 {0x023F0000, 0, 0, 276 "Synchronization required"}, 277 {0x024E0000, 0, 0, 278 "No ready, IOA shutdown"}, 279 {0x025A0000, 0, 0, 280 "Not ready, IOA has been shutdown"}, 281 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL, 282 "3020: Storage subsystem configuration error"}, 283 {0x03110B00, 0, 0, 284 "FFF5: Medium error, data unreadable, recommend reassign"}, 285 {0x03110C00, 0, 0, 286 "7000: Medium error, data unreadable, do not reassign"}, 287 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL, 288 "FFF3: Disk media format bad"}, 289 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL, 290 "3002: Addressed device failed to respond to selection"}, 291 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL, 292 "3100: Device bus error"}, 293 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL, 294 "3109: IOA timed out a device command"}, 295 {0x04088000, 0, 0, 296 "3120: SCSI bus is not operational"}, 297 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL, 298 "4100: Hard device bus fabric error"}, 299 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL, 300 "310C: Logical block guard error detected by the device"}, 301 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL, 302 "310C: Logical block reference tag error detected by the device"}, 303 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL, 304 "4170: Scatter list tag / sequence number error"}, 305 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL, 306 "8150: Logical block CRC error on IOA to Host transfer"}, 307 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL, 308 "4170: Logical block sequence number error on IOA to Host transfer"}, 309 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL, 310 "310D: Logical block reference tag error detected by the IOA"}, 311 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL, 312 "310D: Logical block guard error detected by the IOA"}, 313 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL, 314 "9000: IOA reserved area data check"}, 315 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL, 316 "9001: IOA reserved area invalid data pattern"}, 317 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL, 318 "9002: IOA reserved area LRC error"}, 319 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL, 320 "Hardware Error, IOA metadata access error"}, 321 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL, 322 "102E: Out of alternate sectors for disk storage"}, 323 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL, 324 "FFF4: Data transfer underlength error"}, 325 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL, 326 "FFF4: Data transfer overlength error"}, 327 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL, 328 "3400: Logical unit failure"}, 329 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL, 330 "FFF4: Device microcode is corrupt"}, 331 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL, 332 "8150: PCI bus error"}, 333 {0x04430000, 1, 0, 334 "Unsupported device bus message received"}, 335 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL, 336 "FFF4: Disk device problem"}, 337 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL, 338 "8150: Permanent IOA failure"}, 339 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL, 340 "3010: Disk device returned wrong response to IOA"}, 341 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL, 342 "8151: IOA microcode error"}, 343 {0x04448500, 0, 0, 344 "Device bus status error"}, 345 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL, 346 "8157: IOA error requiring IOA reset to recover"}, 347 {0x04448700, 0, 0, 348 "ATA device status error"}, 349 {0x04490000, 0, 0, 350 "Message reject received from the device"}, 351 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL, 352 "8008: A permanent cache battery pack failure occurred"}, 353 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL, 354 "9090: Disk unit has been modified after the last known status"}, 355 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL, 356 "9081: IOA detected device error"}, 357 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL, 358 "9082: IOA detected device error"}, 359 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL, 360 "3110: Device bus error, message or command phase"}, 361 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL, 362 "3110: SAS Command / Task Management Function failed"}, 363 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL, 364 "9091: Incorrect hardware configuration change has been detected"}, 365 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL, 366 "9073: Invalid multi-adapter configuration"}, 367 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL, 368 "4010: Incorrect connection between cascaded expanders"}, 369 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL, 370 "4020: Connections exceed IOA design limits"}, 371 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL, 372 "4030: Incorrect multipath connection"}, 373 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL, 374 "4110: Unsupported enclosure function"}, 375 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL, 376 "FFF4: Command to logical unit failed"}, 377 {0x05240000, 1, 0, 378 "Illegal request, invalid request type or request packet"}, 379 {0x05250000, 0, 0, 380 "Illegal request, invalid resource handle"}, 381 {0x05258000, 0, 0, 382 "Illegal request, commands not allowed to this device"}, 383 {0x05258100, 0, 0, 384 "Illegal request, command not allowed to a secondary adapter"}, 385 {0x05258200, 0, 0, 386 "Illegal request, command not allowed to a non-optimized resource"}, 387 {0x05260000, 0, 0, 388 "Illegal request, invalid field in parameter list"}, 389 {0x05260100, 0, 0, 390 "Illegal request, parameter not supported"}, 391 {0x05260200, 0, 0, 392 "Illegal request, parameter value invalid"}, 393 {0x052C0000, 0, 0, 394 "Illegal request, command sequence error"}, 395 {0x052C8000, 1, 0, 396 "Illegal request, dual adapter support not enabled"}, 397 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL, 398 "9031: Array protection temporarily suspended, protection resuming"}, 399 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL, 400 "9040: Array protection temporarily suspended, protection resuming"}, 401 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL, 402 "3140: Device bus not ready to ready transition"}, 403 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL, 404 "FFFB: SCSI bus was reset"}, 405 {0x06290500, 0, 0, 406 "FFFE: SCSI bus transition to single ended"}, 407 {0x06290600, 0, 0, 408 "FFFE: SCSI bus transition to LVD"}, 409 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL, 410 "FFFB: SCSI bus was reset by another initiator"}, 411 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL, 412 "3029: A device replacement has occurred"}, 413 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL, 414 "9051: IOA cache data exists for a missing or failed device"}, 415 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL, 416 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"}, 417 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL, 418 "9025: Disk unit is not supported at its physical location"}, 419 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL, 420 "3020: IOA detected a SCSI bus configuration error"}, 421 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL, 422 "3150: SCSI bus configuration error"}, 423 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL, 424 "9074: Asymmetric advanced function disk configuration"}, 425 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL, 426 "4040: Incomplete multipath connection between IOA and enclosure"}, 427 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL, 428 "4041: Incomplete multipath connection between enclosure and device"}, 429 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL, 430 "9075: Incomplete multipath connection between IOA and remote IOA"}, 431 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL, 432 "9076: Configuration error, missing remote IOA"}, 433 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL, 434 "4050: Enclosure does not support a required multipath function"}, 435 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL, 436 "4070: Logically bad block written on device"}, 437 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL, 438 "9041: Array protection temporarily suspended"}, 439 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL, 440 "9042: Corrupt array parity detected on specified device"}, 441 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL, 442 "9030: Array no longer protected due to missing or failed disk unit"}, 443 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL, 444 "9071: Link operational transition"}, 445 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL, 446 "9072: Link not operational transition"}, 447 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL, 448 "9032: Array exposed but still protected"}, 449 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1, 450 "70DD: Device forced failed by disrupt device command"}, 451 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL, 452 "4061: Multipath redundancy level got better"}, 453 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL, 454 "4060: Multipath redundancy level got worse"}, 455 {0x07270000, 0, 0, 456 "Failure due to other device"}, 457 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL, 458 "9008: IOA does not support functions expected by devices"}, 459 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL, 460 "9010: Cache data associated with attached devices cannot be found"}, 461 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL, 462 "9011: Cache data belongs to devices other than those attached"}, 463 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL, 464 "9020: Array missing 2 or more devices with only 1 device present"}, 465 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL, 466 "9021: Array missing 2 or more devices with 2 or more devices present"}, 467 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL, 468 "9022: Exposed array is missing a required device"}, 469 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL, 470 "9023: Array member(s) not at required physical locations"}, 471 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL, 472 "9024: Array not functional due to present hardware configuration"}, 473 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL, 474 "9026: Array not functional due to present hardware configuration"}, 475 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL, 476 "9027: Array is missing a device and parity is out of sync"}, 477 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL, 478 "9028: Maximum number of arrays already exist"}, 479 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL, 480 "9050: Required cache data cannot be located for a disk unit"}, 481 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL, 482 "9052: Cache data exists for a device that has been modified"}, 483 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL, 484 "9054: IOA resources not available due to previous problems"}, 485 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL, 486 "9092: Disk unit requires initialization before use"}, 487 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL, 488 "9029: Incorrect hardware configuration change has been detected"}, 489 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL, 490 "9060: One or more disk pairs are missing from an array"}, 491 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL, 492 "9061: One or more disks are missing from an array"}, 493 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL, 494 "9062: One or more disks are missing from an array"}, 495 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL, 496 "9063: Maximum number of functional arrays has been exceeded"}, 497 {0x0B260000, 0, 0, 498 "Aborted command, invalid descriptor"}, 499 {0x0B5A0000, 0, 0, 500 "Command terminated by host"} 501 }; 502 503 static const struct ipr_ses_table_entry ipr_ses_table[] = { 504 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, 505 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, 506 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ 507 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ 508 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ 509 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ 510 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, 511 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, 512 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 513 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 514 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, 515 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, 516 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } 517 }; 518 519 /* 520 * Function Prototypes 521 */ 522 static int ipr_reset_alert(struct ipr_cmnd *); 523 static void ipr_process_ccn(struct ipr_cmnd *); 524 static void ipr_process_error(struct ipr_cmnd *); 525 static void ipr_reset_ioa_job(struct ipr_cmnd *); 526 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, 527 enum ipr_shutdown_type); 528 529 #ifdef CONFIG_SCSI_IPR_TRACE 530 /** 531 * ipr_trc_hook - Add a trace entry to the driver trace 532 * @ipr_cmd: ipr command struct 533 * @type: trace type 534 * @add_data: additional data 535 * 536 * Return value: 537 * none 538 **/ 539 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, 540 u8 type, u32 add_data) 541 { 542 struct ipr_trace_entry *trace_entry; 543 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 544 545 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++]; 546 trace_entry->time = jiffies; 547 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; 548 trace_entry->type = type; 549 if (ipr_cmd->ioa_cfg->sis64) 550 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command; 551 else 552 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command; 553 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff; 554 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; 555 trace_entry->u.add_data = add_data; 556 } 557 #else 558 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0) 559 #endif 560 561 /** 562 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse 563 * @ipr_cmd: ipr command struct 564 * 565 * Return value: 566 * none 567 **/ 568 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 569 { 570 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 571 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 572 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64; 573 dma_addr_t dma_addr = ipr_cmd->dma_addr; 574 575 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 576 ioarcb->data_transfer_length = 0; 577 ioarcb->read_data_transfer_length = 0; 578 ioarcb->ioadl_len = 0; 579 ioarcb->read_ioadl_len = 0; 580 581 if (ipr_cmd->ioa_cfg->sis64) { 582 ioarcb->u.sis64_addr_data.data_ioadl_addr = 583 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 584 ioasa64->u.gata.status = 0; 585 } else { 586 ioarcb->write_ioadl_addr = 587 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 588 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 589 ioasa->u.gata.status = 0; 590 } 591 592 ioasa->hdr.ioasc = 0; 593 ioasa->hdr.residual_data_len = 0; 594 ipr_cmd->scsi_cmd = NULL; 595 ipr_cmd->qc = NULL; 596 ipr_cmd->sense_buffer[0] = 0; 597 ipr_cmd->dma_use_sg = 0; 598 } 599 600 /** 601 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block 602 * @ipr_cmd: ipr command struct 603 * 604 * Return value: 605 * none 606 **/ 607 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 608 { 609 ipr_reinit_ipr_cmnd(ipr_cmd); 610 ipr_cmd->u.scratch = 0; 611 ipr_cmd->sibling = NULL; 612 init_timer(&ipr_cmd->timer); 613 } 614 615 /** 616 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block 617 * @ioa_cfg: ioa config struct 618 * 619 * Return value: 620 * pointer to ipr command struct 621 **/ 622 static 623 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) 624 { 625 struct ipr_cmnd *ipr_cmd; 626 627 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue); 628 list_del(&ipr_cmd->queue); 629 ipr_init_ipr_cmnd(ipr_cmd); 630 631 return ipr_cmd; 632 } 633 634 /** 635 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts 636 * @ioa_cfg: ioa config struct 637 * @clr_ints: interrupts to clear 638 * 639 * This function masks all interrupts on the adapter, then clears the 640 * interrupts specified in the mask 641 * 642 * Return value: 643 * none 644 **/ 645 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, 646 u32 clr_ints) 647 { 648 volatile u32 int_reg; 649 650 /* Stop new interrupts */ 651 ioa_cfg->allow_interrupts = 0; 652 653 /* Set interrupt mask to stop all new interrupts */ 654 if (ioa_cfg->sis64) 655 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg); 656 else 657 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); 658 659 /* Clear any pending interrupts */ 660 if (ioa_cfg->sis64) 661 writel(~0, ioa_cfg->regs.clr_interrupt_reg); 662 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32); 663 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 664 } 665 666 /** 667 * ipr_save_pcix_cmd_reg - Save PCI-X command register 668 * @ioa_cfg: ioa config struct 669 * 670 * Return value: 671 * 0 on success / -EIO on failure 672 **/ 673 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 674 { 675 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 676 677 if (pcix_cmd_reg == 0) 678 return 0; 679 680 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 681 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 682 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 683 return -EIO; 684 } 685 686 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; 687 return 0; 688 } 689 690 /** 691 * ipr_set_pcix_cmd_reg - Setup PCI-X command register 692 * @ioa_cfg: ioa config struct 693 * 694 * Return value: 695 * 0 on success / -EIO on failure 696 **/ 697 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 698 { 699 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 700 701 if (pcix_cmd_reg) { 702 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 703 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 704 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); 705 return -EIO; 706 } 707 } 708 709 return 0; 710 } 711 712 /** 713 * ipr_sata_eh_done - done function for aborted SATA commands 714 * @ipr_cmd: ipr command struct 715 * 716 * This function is invoked for ops generated to SATA 717 * devices which are being aborted. 718 * 719 * Return value: 720 * none 721 **/ 722 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd) 723 { 724 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 725 struct ata_queued_cmd *qc = ipr_cmd->qc; 726 struct ipr_sata_port *sata_port = qc->ap->private_data; 727 728 qc->err_mask |= AC_ERR_OTHER; 729 sata_port->ioasa.status |= ATA_BUSY; 730 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 731 ata_qc_complete(qc); 732 } 733 734 /** 735 * ipr_scsi_eh_done - mid-layer done function for aborted ops 736 * @ipr_cmd: ipr command struct 737 * 738 * This function is invoked by the interrupt handler for 739 * ops generated by the SCSI mid-layer which are being aborted. 740 * 741 * Return value: 742 * none 743 **/ 744 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 745 { 746 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 747 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 748 749 scsi_cmd->result |= (DID_ERROR << 16); 750 751 scsi_dma_unmap(ipr_cmd->scsi_cmd); 752 scsi_cmd->scsi_done(scsi_cmd); 753 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 754 } 755 756 /** 757 * ipr_fail_all_ops - Fails all outstanding ops. 758 * @ioa_cfg: ioa config struct 759 * 760 * This function fails all outstanding ops. 761 * 762 * Return value: 763 * none 764 **/ 765 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) 766 { 767 struct ipr_cmnd *ipr_cmd, *temp; 768 769 ENTER; 770 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) { 771 list_del(&ipr_cmd->queue); 772 773 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); 774 ipr_cmd->s.ioasa.hdr.ilid = cpu_to_be32(IPR_DRIVER_ILID); 775 776 if (ipr_cmd->scsi_cmd) 777 ipr_cmd->done = ipr_scsi_eh_done; 778 else if (ipr_cmd->qc) 779 ipr_cmd->done = ipr_sata_eh_done; 780 781 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET); 782 del_timer(&ipr_cmd->timer); 783 ipr_cmd->done(ipr_cmd); 784 } 785 786 LEAVE; 787 } 788 789 /** 790 * ipr_send_command - Send driver initiated requests. 791 * @ipr_cmd: ipr command struct 792 * 793 * This function sends a command to the adapter using the correct write call. 794 * In the case of sis64, calculate the ioarcb size required. Then or in the 795 * appropriate bits. 796 * 797 * Return value: 798 * none 799 **/ 800 static void ipr_send_command(struct ipr_cmnd *ipr_cmd) 801 { 802 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 803 dma_addr_t send_dma_addr = ipr_cmd->dma_addr; 804 805 if (ioa_cfg->sis64) { 806 /* The default size is 256 bytes */ 807 send_dma_addr |= 0x1; 808 809 /* If the number of ioadls * size of ioadl > 128 bytes, 810 then use a 512 byte ioarcb */ 811 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 ) 812 send_dma_addr |= 0x4; 813 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg); 814 } else 815 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg); 816 } 817 818 /** 819 * ipr_do_req - Send driver initiated requests. 820 * @ipr_cmd: ipr command struct 821 * @done: done function 822 * @timeout_func: timeout function 823 * @timeout: timeout value 824 * 825 * This function sends the specified command to the adapter with the 826 * timeout given. The done function is invoked on command completion. 827 * 828 * Return value: 829 * none 830 **/ 831 static void ipr_do_req(struct ipr_cmnd *ipr_cmd, 832 void (*done) (struct ipr_cmnd *), 833 void (*timeout_func) (struct ipr_cmnd *), u32 timeout) 834 { 835 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 836 837 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 838 839 ipr_cmd->done = done; 840 841 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 842 ipr_cmd->timer.expires = jiffies + timeout; 843 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func; 844 845 add_timer(&ipr_cmd->timer); 846 847 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); 848 849 mb(); 850 851 ipr_send_command(ipr_cmd); 852 } 853 854 /** 855 * ipr_internal_cmd_done - Op done function for an internally generated op. 856 * @ipr_cmd: ipr command struct 857 * 858 * This function is the op done function for an internally generated, 859 * blocking op. It simply wakes the sleeping thread. 860 * 861 * Return value: 862 * none 863 **/ 864 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) 865 { 866 if (ipr_cmd->sibling) 867 ipr_cmd->sibling = NULL; 868 else 869 complete(&ipr_cmd->completion); 870 } 871 872 /** 873 * ipr_init_ioadl - initialize the ioadl for the correct SIS type 874 * @ipr_cmd: ipr command struct 875 * @dma_addr: dma address 876 * @len: transfer length 877 * @flags: ioadl flag value 878 * 879 * This function initializes an ioadl in the case where there is only a single 880 * descriptor. 881 * 882 * Return value: 883 * nothing 884 **/ 885 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr, 886 u32 len, int flags) 887 { 888 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 889 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 890 891 ipr_cmd->dma_use_sg = 1; 892 893 if (ipr_cmd->ioa_cfg->sis64) { 894 ioadl64->flags = cpu_to_be32(flags); 895 ioadl64->data_len = cpu_to_be32(len); 896 ioadl64->address = cpu_to_be64(dma_addr); 897 898 ipr_cmd->ioarcb.ioadl_len = 899 cpu_to_be32(sizeof(struct ipr_ioadl64_desc)); 900 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len); 901 } else { 902 ioadl->flags_and_data_len = cpu_to_be32(flags | len); 903 ioadl->address = cpu_to_be32(dma_addr); 904 905 if (flags == IPR_IOADL_FLAGS_READ_LAST) { 906 ipr_cmd->ioarcb.read_ioadl_len = 907 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 908 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len); 909 } else { 910 ipr_cmd->ioarcb.ioadl_len = 911 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 912 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len); 913 } 914 } 915 } 916 917 /** 918 * ipr_send_blocking_cmd - Send command and sleep on its completion. 919 * @ipr_cmd: ipr command struct 920 * @timeout_func: function to invoke if command times out 921 * @timeout: timeout 922 * 923 * Return value: 924 * none 925 **/ 926 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, 927 void (*timeout_func) (struct ipr_cmnd *ipr_cmd), 928 u32 timeout) 929 { 930 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 931 932 init_completion(&ipr_cmd->completion); 933 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); 934 935 spin_unlock_irq(ioa_cfg->host->host_lock); 936 wait_for_completion(&ipr_cmd->completion); 937 spin_lock_irq(ioa_cfg->host->host_lock); 938 } 939 940 /** 941 * ipr_send_hcam - Send an HCAM to the adapter. 942 * @ioa_cfg: ioa config struct 943 * @type: HCAM type 944 * @hostrcb: hostrcb struct 945 * 946 * This function will send a Host Controlled Async command to the adapter. 947 * If HCAMs are currently not allowed to be issued to the adapter, it will 948 * place the hostrcb on the free queue. 949 * 950 * Return value: 951 * none 952 **/ 953 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, 954 struct ipr_hostrcb *hostrcb) 955 { 956 struct ipr_cmnd *ipr_cmd; 957 struct ipr_ioarcb *ioarcb; 958 959 if (ioa_cfg->allow_cmds) { 960 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 961 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 962 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); 963 964 ipr_cmd->u.hostrcb = hostrcb; 965 ioarcb = &ipr_cmd->ioarcb; 966 967 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 968 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; 969 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; 970 ioarcb->cmd_pkt.cdb[1] = type; 971 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; 972 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; 973 974 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma, 975 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST); 976 977 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) 978 ipr_cmd->done = ipr_process_ccn; 979 else 980 ipr_cmd->done = ipr_process_error; 981 982 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); 983 984 mb(); 985 986 ipr_send_command(ipr_cmd); 987 } else { 988 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 989 } 990 } 991 992 /** 993 * ipr_update_ata_class - Update the ata class in the resource entry 994 * @res: resource entry struct 995 * @proto: cfgte device bus protocol value 996 * 997 * Return value: 998 * none 999 **/ 1000 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto) 1001 { 1002 switch(proto) { 1003 case IPR_PROTO_SATA: 1004 case IPR_PROTO_SAS_STP: 1005 res->ata_class = ATA_DEV_ATA; 1006 break; 1007 case IPR_PROTO_SATA_ATAPI: 1008 case IPR_PROTO_SAS_STP_ATAPI: 1009 res->ata_class = ATA_DEV_ATAPI; 1010 break; 1011 default: 1012 res->ata_class = ATA_DEV_UNKNOWN; 1013 break; 1014 }; 1015 } 1016 1017 /** 1018 * ipr_init_res_entry - Initialize a resource entry struct. 1019 * @res: resource entry struct 1020 * @cfgtew: config table entry wrapper struct 1021 * 1022 * Return value: 1023 * none 1024 **/ 1025 static void ipr_init_res_entry(struct ipr_resource_entry *res, 1026 struct ipr_config_table_entry_wrapper *cfgtew) 1027 { 1028 int found = 0; 1029 unsigned int proto; 1030 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg; 1031 struct ipr_resource_entry *gscsi_res = NULL; 1032 1033 res->needs_sync_complete = 0; 1034 res->in_erp = 0; 1035 res->add_to_ml = 0; 1036 res->del_from_ml = 0; 1037 res->resetting_device = 0; 1038 res->sdev = NULL; 1039 res->sata_port = NULL; 1040 1041 if (ioa_cfg->sis64) { 1042 proto = cfgtew->u.cfgte64->proto; 1043 res->res_flags = cfgtew->u.cfgte64->res_flags; 1044 res->qmodel = IPR_QUEUEING_MODEL64(res); 1045 res->type = cfgtew->u.cfgte64->res_type; 1046 1047 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path, 1048 sizeof(res->res_path)); 1049 1050 res->bus = 0; 1051 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1052 sizeof(res->dev_lun.scsi_lun)); 1053 res->lun = scsilun_to_int(&res->dev_lun); 1054 1055 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) { 1056 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) { 1057 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) { 1058 found = 1; 1059 res->target = gscsi_res->target; 1060 break; 1061 } 1062 } 1063 if (!found) { 1064 res->target = find_first_zero_bit(ioa_cfg->target_ids, 1065 ioa_cfg->max_devs_supported); 1066 set_bit(res->target, ioa_cfg->target_ids); 1067 } 1068 } else if (res->type == IPR_RES_TYPE_IOAFP) { 1069 res->bus = IPR_IOAFP_VIRTUAL_BUS; 1070 res->target = 0; 1071 } else if (res->type == IPR_RES_TYPE_ARRAY) { 1072 res->bus = IPR_ARRAY_VIRTUAL_BUS; 1073 res->target = find_first_zero_bit(ioa_cfg->array_ids, 1074 ioa_cfg->max_devs_supported); 1075 set_bit(res->target, ioa_cfg->array_ids); 1076 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) { 1077 res->bus = IPR_VSET_VIRTUAL_BUS; 1078 res->target = find_first_zero_bit(ioa_cfg->vset_ids, 1079 ioa_cfg->max_devs_supported); 1080 set_bit(res->target, ioa_cfg->vset_ids); 1081 } else { 1082 res->target = find_first_zero_bit(ioa_cfg->target_ids, 1083 ioa_cfg->max_devs_supported); 1084 set_bit(res->target, ioa_cfg->target_ids); 1085 } 1086 } else { 1087 proto = cfgtew->u.cfgte->proto; 1088 res->qmodel = IPR_QUEUEING_MODEL(res); 1089 res->flags = cfgtew->u.cfgte->flags; 1090 if (res->flags & IPR_IS_IOA_RESOURCE) 1091 res->type = IPR_RES_TYPE_IOAFP; 1092 else 1093 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f; 1094 1095 res->bus = cfgtew->u.cfgte->res_addr.bus; 1096 res->target = cfgtew->u.cfgte->res_addr.target; 1097 res->lun = cfgtew->u.cfgte->res_addr.lun; 1098 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn); 1099 } 1100 1101 ipr_update_ata_class(res, proto); 1102 } 1103 1104 /** 1105 * ipr_is_same_device - Determine if two devices are the same. 1106 * @res: resource entry struct 1107 * @cfgtew: config table entry wrapper struct 1108 * 1109 * Return value: 1110 * 1 if the devices are the same / 0 otherwise 1111 **/ 1112 static int ipr_is_same_device(struct ipr_resource_entry *res, 1113 struct ipr_config_table_entry_wrapper *cfgtew) 1114 { 1115 if (res->ioa_cfg->sis64) { 1116 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id, 1117 sizeof(cfgtew->u.cfgte64->dev_id)) && 1118 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1119 sizeof(cfgtew->u.cfgte64->lun))) { 1120 return 1; 1121 } 1122 } else { 1123 if (res->bus == cfgtew->u.cfgte->res_addr.bus && 1124 res->target == cfgtew->u.cfgte->res_addr.target && 1125 res->lun == cfgtew->u.cfgte->res_addr.lun) 1126 return 1; 1127 } 1128 1129 return 0; 1130 } 1131 1132 /** 1133 * ipr_format_res_path - Format the resource path for printing. 1134 * @res_path: resource path 1135 * @buf: buffer 1136 * 1137 * Return value: 1138 * pointer to buffer 1139 **/ 1140 static char *ipr_format_res_path(u8 *res_path, char *buffer, int len) 1141 { 1142 int i; 1143 char *p = buffer; 1144 1145 *p = '\0'; 1146 p += snprintf(p, buffer + len - p, "%02X", res_path[0]); 1147 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++) 1148 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]); 1149 1150 return buffer; 1151 } 1152 1153 /** 1154 * ipr_update_res_entry - Update the resource entry. 1155 * @res: resource entry struct 1156 * @cfgtew: config table entry wrapper struct 1157 * 1158 * Return value: 1159 * none 1160 **/ 1161 static void ipr_update_res_entry(struct ipr_resource_entry *res, 1162 struct ipr_config_table_entry_wrapper *cfgtew) 1163 { 1164 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1165 unsigned int proto; 1166 int new_path = 0; 1167 1168 if (res->ioa_cfg->sis64) { 1169 res->flags = cfgtew->u.cfgte64->flags; 1170 res->res_flags = cfgtew->u.cfgte64->res_flags; 1171 res->type = cfgtew->u.cfgte64->res_type; 1172 1173 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data, 1174 sizeof(struct ipr_std_inq_data)); 1175 1176 res->qmodel = IPR_QUEUEING_MODEL64(res); 1177 proto = cfgtew->u.cfgte64->proto; 1178 res->res_handle = cfgtew->u.cfgte64->res_handle; 1179 res->dev_id = cfgtew->u.cfgte64->dev_id; 1180 1181 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1182 sizeof(res->dev_lun.scsi_lun)); 1183 1184 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path, 1185 sizeof(res->res_path))) { 1186 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path, 1187 sizeof(res->res_path)); 1188 new_path = 1; 1189 } 1190 1191 if (res->sdev && new_path) 1192 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n", 1193 ipr_format_res_path(res->res_path, buffer, 1194 sizeof(buffer))); 1195 } else { 1196 res->flags = cfgtew->u.cfgte->flags; 1197 if (res->flags & IPR_IS_IOA_RESOURCE) 1198 res->type = IPR_RES_TYPE_IOAFP; 1199 else 1200 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f; 1201 1202 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data, 1203 sizeof(struct ipr_std_inq_data)); 1204 1205 res->qmodel = IPR_QUEUEING_MODEL(res); 1206 proto = cfgtew->u.cfgte->proto; 1207 res->res_handle = cfgtew->u.cfgte->res_handle; 1208 } 1209 1210 ipr_update_ata_class(res, proto); 1211 } 1212 1213 /** 1214 * ipr_clear_res_target - Clear the bit in the bit map representing the target 1215 * for the resource. 1216 * @res: resource entry struct 1217 * @cfgtew: config table entry wrapper struct 1218 * 1219 * Return value: 1220 * none 1221 **/ 1222 static void ipr_clear_res_target(struct ipr_resource_entry *res) 1223 { 1224 struct ipr_resource_entry *gscsi_res = NULL; 1225 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg; 1226 1227 if (!ioa_cfg->sis64) 1228 return; 1229 1230 if (res->bus == IPR_ARRAY_VIRTUAL_BUS) 1231 clear_bit(res->target, ioa_cfg->array_ids); 1232 else if (res->bus == IPR_VSET_VIRTUAL_BUS) 1233 clear_bit(res->target, ioa_cfg->vset_ids); 1234 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) { 1235 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) 1236 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res) 1237 return; 1238 clear_bit(res->target, ioa_cfg->target_ids); 1239 1240 } else if (res->bus == 0) 1241 clear_bit(res->target, ioa_cfg->target_ids); 1242 } 1243 1244 /** 1245 * ipr_handle_config_change - Handle a config change from the adapter 1246 * @ioa_cfg: ioa config struct 1247 * @hostrcb: hostrcb 1248 * 1249 * Return value: 1250 * none 1251 **/ 1252 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, 1253 struct ipr_hostrcb *hostrcb) 1254 { 1255 struct ipr_resource_entry *res = NULL; 1256 struct ipr_config_table_entry_wrapper cfgtew; 1257 __be32 cc_res_handle; 1258 1259 u32 is_ndn = 1; 1260 1261 if (ioa_cfg->sis64) { 1262 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64; 1263 cc_res_handle = cfgtew.u.cfgte64->res_handle; 1264 } else { 1265 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte; 1266 cc_res_handle = cfgtew.u.cfgte->res_handle; 1267 } 1268 1269 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1270 if (res->res_handle == cc_res_handle) { 1271 is_ndn = 0; 1272 break; 1273 } 1274 } 1275 1276 if (is_ndn) { 1277 if (list_empty(&ioa_cfg->free_res_q)) { 1278 ipr_send_hcam(ioa_cfg, 1279 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 1280 hostrcb); 1281 return; 1282 } 1283 1284 res = list_entry(ioa_cfg->free_res_q.next, 1285 struct ipr_resource_entry, queue); 1286 1287 list_del(&res->queue); 1288 ipr_init_res_entry(res, &cfgtew); 1289 list_add_tail(&res->queue, &ioa_cfg->used_res_q); 1290 } 1291 1292 ipr_update_res_entry(res, &cfgtew); 1293 1294 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { 1295 if (res->sdev) { 1296 res->del_from_ml = 1; 1297 res->res_handle = IPR_INVALID_RES_HANDLE; 1298 if (ioa_cfg->allow_ml_add_del) 1299 schedule_work(&ioa_cfg->work_q); 1300 } else { 1301 ipr_clear_res_target(res); 1302 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 1303 } 1304 } else if (!res->sdev || res->del_from_ml) { 1305 res->add_to_ml = 1; 1306 if (ioa_cfg->allow_ml_add_del) 1307 schedule_work(&ioa_cfg->work_q); 1308 } 1309 1310 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 1311 } 1312 1313 /** 1314 * ipr_process_ccn - Op done function for a CCN. 1315 * @ipr_cmd: ipr command struct 1316 * 1317 * This function is the op done function for a configuration 1318 * change notification host controlled async from the adapter. 1319 * 1320 * Return value: 1321 * none 1322 **/ 1323 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) 1324 { 1325 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1326 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 1327 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 1328 1329 list_del(&hostrcb->queue); 1330 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 1331 1332 if (ioasc) { 1333 if (ioasc != IPR_IOASC_IOA_WAS_RESET) 1334 dev_err(&ioa_cfg->pdev->dev, 1335 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 1336 1337 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 1338 } else { 1339 ipr_handle_config_change(ioa_cfg, hostrcb); 1340 } 1341 } 1342 1343 /** 1344 * strip_and_pad_whitespace - Strip and pad trailing whitespace. 1345 * @i: index into buffer 1346 * @buf: string to modify 1347 * 1348 * This function will strip all trailing whitespace, pad the end 1349 * of the string with a single space, and NULL terminate the string. 1350 * 1351 * Return value: 1352 * new length of string 1353 **/ 1354 static int strip_and_pad_whitespace(int i, char *buf) 1355 { 1356 while (i && buf[i] == ' ') 1357 i--; 1358 buf[i+1] = ' '; 1359 buf[i+2] = '\0'; 1360 return i + 2; 1361 } 1362 1363 /** 1364 * ipr_log_vpd_compact - Log the passed extended VPD compactly. 1365 * @prefix: string to print at start of printk 1366 * @hostrcb: hostrcb pointer 1367 * @vpd: vendor/product id/sn struct 1368 * 1369 * Return value: 1370 * none 1371 **/ 1372 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 1373 struct ipr_vpd *vpd) 1374 { 1375 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3]; 1376 int i = 0; 1377 1378 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 1379 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer); 1380 1381 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN); 1382 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer); 1383 1384 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN); 1385 buffer[IPR_SERIAL_NUM_LEN + i] = '\0'; 1386 1387 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer); 1388 } 1389 1390 /** 1391 * ipr_log_vpd - Log the passed VPD to the error log. 1392 * @vpd: vendor/product id/sn struct 1393 * 1394 * Return value: 1395 * none 1396 **/ 1397 static void ipr_log_vpd(struct ipr_vpd *vpd) 1398 { 1399 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN 1400 + IPR_SERIAL_NUM_LEN]; 1401 1402 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 1403 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id, 1404 IPR_PROD_ID_LEN); 1405 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; 1406 ipr_err("Vendor/Product ID: %s\n", buffer); 1407 1408 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN); 1409 buffer[IPR_SERIAL_NUM_LEN] = '\0'; 1410 ipr_err(" Serial Number: %s\n", buffer); 1411 } 1412 1413 /** 1414 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly. 1415 * @prefix: string to print at start of printk 1416 * @hostrcb: hostrcb pointer 1417 * @vpd: vendor/product id/sn/wwn struct 1418 * 1419 * Return value: 1420 * none 1421 **/ 1422 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 1423 struct ipr_ext_vpd *vpd) 1424 { 1425 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd); 1426 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix, 1427 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1])); 1428 } 1429 1430 /** 1431 * ipr_log_ext_vpd - Log the passed extended VPD to the error log. 1432 * @vpd: vendor/product id/sn/wwn struct 1433 * 1434 * Return value: 1435 * none 1436 **/ 1437 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd) 1438 { 1439 ipr_log_vpd(&vpd->vpd); 1440 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]), 1441 be32_to_cpu(vpd->wwid[1])); 1442 } 1443 1444 /** 1445 * ipr_log_enhanced_cache_error - Log a cache error. 1446 * @ioa_cfg: ioa config struct 1447 * @hostrcb: hostrcb struct 1448 * 1449 * Return value: 1450 * none 1451 **/ 1452 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1453 struct ipr_hostrcb *hostrcb) 1454 { 1455 struct ipr_hostrcb_type_12_error *error; 1456 1457 if (ioa_cfg->sis64) 1458 error = &hostrcb->hcam.u.error64.u.type_12_error; 1459 else 1460 error = &hostrcb->hcam.u.error.u.type_12_error; 1461 1462 ipr_err("-----Current Configuration-----\n"); 1463 ipr_err("Cache Directory Card Information:\n"); 1464 ipr_log_ext_vpd(&error->ioa_vpd); 1465 ipr_err("Adapter Card Information:\n"); 1466 ipr_log_ext_vpd(&error->cfc_vpd); 1467 1468 ipr_err("-----Expected Configuration-----\n"); 1469 ipr_err("Cache Directory Card Information:\n"); 1470 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd); 1471 ipr_err("Adapter Card Information:\n"); 1472 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd); 1473 1474 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1475 be32_to_cpu(error->ioa_data[0]), 1476 be32_to_cpu(error->ioa_data[1]), 1477 be32_to_cpu(error->ioa_data[2])); 1478 } 1479 1480 /** 1481 * ipr_log_cache_error - Log a cache error. 1482 * @ioa_cfg: ioa config struct 1483 * @hostrcb: hostrcb struct 1484 * 1485 * Return value: 1486 * none 1487 **/ 1488 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1489 struct ipr_hostrcb *hostrcb) 1490 { 1491 struct ipr_hostrcb_type_02_error *error = 1492 &hostrcb->hcam.u.error.u.type_02_error; 1493 1494 ipr_err("-----Current Configuration-----\n"); 1495 ipr_err("Cache Directory Card Information:\n"); 1496 ipr_log_vpd(&error->ioa_vpd); 1497 ipr_err("Adapter Card Information:\n"); 1498 ipr_log_vpd(&error->cfc_vpd); 1499 1500 ipr_err("-----Expected Configuration-----\n"); 1501 ipr_err("Cache Directory Card Information:\n"); 1502 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd); 1503 ipr_err("Adapter Card Information:\n"); 1504 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd); 1505 1506 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1507 be32_to_cpu(error->ioa_data[0]), 1508 be32_to_cpu(error->ioa_data[1]), 1509 be32_to_cpu(error->ioa_data[2])); 1510 } 1511 1512 /** 1513 * ipr_log_enhanced_config_error - Log a configuration error. 1514 * @ioa_cfg: ioa config struct 1515 * @hostrcb: hostrcb struct 1516 * 1517 * Return value: 1518 * none 1519 **/ 1520 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg, 1521 struct ipr_hostrcb *hostrcb) 1522 { 1523 int errors_logged, i; 1524 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry; 1525 struct ipr_hostrcb_type_13_error *error; 1526 1527 error = &hostrcb->hcam.u.error.u.type_13_error; 1528 errors_logged = be32_to_cpu(error->errors_logged); 1529 1530 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1531 be32_to_cpu(error->errors_detected), errors_logged); 1532 1533 dev_entry = error->dev; 1534 1535 for (i = 0; i < errors_logged; i++, dev_entry++) { 1536 ipr_err_separator; 1537 1538 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1539 ipr_log_ext_vpd(&dev_entry->vpd); 1540 1541 ipr_err("-----New Device Information-----\n"); 1542 ipr_log_ext_vpd(&dev_entry->new_vpd); 1543 1544 ipr_err("Cache Directory Card Information:\n"); 1545 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1546 1547 ipr_err("Adapter Card Information:\n"); 1548 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1549 } 1550 } 1551 1552 /** 1553 * ipr_log_sis64_config_error - Log a device error. 1554 * @ioa_cfg: ioa config struct 1555 * @hostrcb: hostrcb struct 1556 * 1557 * Return value: 1558 * none 1559 **/ 1560 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg, 1561 struct ipr_hostrcb *hostrcb) 1562 { 1563 int errors_logged, i; 1564 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry; 1565 struct ipr_hostrcb_type_23_error *error; 1566 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1567 1568 error = &hostrcb->hcam.u.error64.u.type_23_error; 1569 errors_logged = be32_to_cpu(error->errors_logged); 1570 1571 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1572 be32_to_cpu(error->errors_detected), errors_logged); 1573 1574 dev_entry = error->dev; 1575 1576 for (i = 0; i < errors_logged; i++, dev_entry++) { 1577 ipr_err_separator; 1578 1579 ipr_err("Device %d : %s", i + 1, 1580 ipr_format_res_path(dev_entry->res_path, buffer, 1581 sizeof(buffer))); 1582 ipr_log_ext_vpd(&dev_entry->vpd); 1583 1584 ipr_err("-----New Device Information-----\n"); 1585 ipr_log_ext_vpd(&dev_entry->new_vpd); 1586 1587 ipr_err("Cache Directory Card Information:\n"); 1588 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1589 1590 ipr_err("Adapter Card Information:\n"); 1591 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1592 } 1593 } 1594 1595 /** 1596 * ipr_log_config_error - Log a configuration error. 1597 * @ioa_cfg: ioa config struct 1598 * @hostrcb: hostrcb struct 1599 * 1600 * Return value: 1601 * none 1602 **/ 1603 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, 1604 struct ipr_hostrcb *hostrcb) 1605 { 1606 int errors_logged, i; 1607 struct ipr_hostrcb_device_data_entry *dev_entry; 1608 struct ipr_hostrcb_type_03_error *error; 1609 1610 error = &hostrcb->hcam.u.error.u.type_03_error; 1611 errors_logged = be32_to_cpu(error->errors_logged); 1612 1613 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1614 be32_to_cpu(error->errors_detected), errors_logged); 1615 1616 dev_entry = error->dev; 1617 1618 for (i = 0; i < errors_logged; i++, dev_entry++) { 1619 ipr_err_separator; 1620 1621 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1622 ipr_log_vpd(&dev_entry->vpd); 1623 1624 ipr_err("-----New Device Information-----\n"); 1625 ipr_log_vpd(&dev_entry->new_vpd); 1626 1627 ipr_err("Cache Directory Card Information:\n"); 1628 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd); 1629 1630 ipr_err("Adapter Card Information:\n"); 1631 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd); 1632 1633 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", 1634 be32_to_cpu(dev_entry->ioa_data[0]), 1635 be32_to_cpu(dev_entry->ioa_data[1]), 1636 be32_to_cpu(dev_entry->ioa_data[2]), 1637 be32_to_cpu(dev_entry->ioa_data[3]), 1638 be32_to_cpu(dev_entry->ioa_data[4])); 1639 } 1640 } 1641 1642 /** 1643 * ipr_log_enhanced_array_error - Log an array 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_array_error(struct ipr_ioa_cfg *ioa_cfg, 1651 struct ipr_hostrcb *hostrcb) 1652 { 1653 int i, num_entries; 1654 struct ipr_hostrcb_type_14_error *error; 1655 struct ipr_hostrcb_array_data_entry_enhanced *array_entry; 1656 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1657 1658 error = &hostrcb->hcam.u.error.u.type_14_error; 1659 1660 ipr_err_separator; 1661 1662 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1663 error->protection_level, 1664 ioa_cfg->host->host_no, 1665 error->last_func_vset_res_addr.bus, 1666 error->last_func_vset_res_addr.target, 1667 error->last_func_vset_res_addr.lun); 1668 1669 ipr_err_separator; 1670 1671 array_entry = error->array_member; 1672 num_entries = min_t(u32, be32_to_cpu(error->num_entries), 1673 ARRAY_SIZE(error->array_member)); 1674 1675 for (i = 0; i < num_entries; i++, array_entry++) { 1676 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1677 continue; 1678 1679 if (be32_to_cpu(error->exposed_mode_adn) == i) 1680 ipr_err("Exposed Array Member %d:\n", i); 1681 else 1682 ipr_err("Array Member %d:\n", i); 1683 1684 ipr_log_ext_vpd(&array_entry->vpd); 1685 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1686 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1687 "Expected Location"); 1688 1689 ipr_err_separator; 1690 } 1691 } 1692 1693 /** 1694 * ipr_log_array_error - Log an array configuration error. 1695 * @ioa_cfg: ioa config struct 1696 * @hostrcb: hostrcb struct 1697 * 1698 * Return value: 1699 * none 1700 **/ 1701 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, 1702 struct ipr_hostrcb *hostrcb) 1703 { 1704 int i; 1705 struct ipr_hostrcb_type_04_error *error; 1706 struct ipr_hostrcb_array_data_entry *array_entry; 1707 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1708 1709 error = &hostrcb->hcam.u.error.u.type_04_error; 1710 1711 ipr_err_separator; 1712 1713 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1714 error->protection_level, 1715 ioa_cfg->host->host_no, 1716 error->last_func_vset_res_addr.bus, 1717 error->last_func_vset_res_addr.target, 1718 error->last_func_vset_res_addr.lun); 1719 1720 ipr_err_separator; 1721 1722 array_entry = error->array_member; 1723 1724 for (i = 0; i < 18; i++) { 1725 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1726 continue; 1727 1728 if (be32_to_cpu(error->exposed_mode_adn) == i) 1729 ipr_err("Exposed Array Member %d:\n", i); 1730 else 1731 ipr_err("Array Member %d:\n", i); 1732 1733 ipr_log_vpd(&array_entry->vpd); 1734 1735 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1736 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1737 "Expected Location"); 1738 1739 ipr_err_separator; 1740 1741 if (i == 9) 1742 array_entry = error->array_member2; 1743 else 1744 array_entry++; 1745 } 1746 } 1747 1748 /** 1749 * ipr_log_hex_data - Log additional hex IOA error data. 1750 * @ioa_cfg: ioa config struct 1751 * @data: IOA error data 1752 * @len: data length 1753 * 1754 * Return value: 1755 * none 1756 **/ 1757 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len) 1758 { 1759 int i; 1760 1761 if (len == 0) 1762 return; 1763 1764 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 1765 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP); 1766 1767 for (i = 0; i < len / 4; i += 4) { 1768 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 1769 be32_to_cpu(data[i]), 1770 be32_to_cpu(data[i+1]), 1771 be32_to_cpu(data[i+2]), 1772 be32_to_cpu(data[i+3])); 1773 } 1774 } 1775 1776 /** 1777 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error. 1778 * @ioa_cfg: ioa config struct 1779 * @hostrcb: hostrcb struct 1780 * 1781 * Return value: 1782 * none 1783 **/ 1784 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1785 struct ipr_hostrcb *hostrcb) 1786 { 1787 struct ipr_hostrcb_type_17_error *error; 1788 1789 if (ioa_cfg->sis64) 1790 error = &hostrcb->hcam.u.error64.u.type_17_error; 1791 else 1792 error = &hostrcb->hcam.u.error.u.type_17_error; 1793 1794 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1795 strim(error->failure_reason); 1796 1797 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 1798 be32_to_cpu(hostrcb->hcam.u.error.prc)); 1799 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd); 1800 ipr_log_hex_data(ioa_cfg, error->data, 1801 be32_to_cpu(hostrcb->hcam.length) - 1802 (offsetof(struct ipr_hostrcb_error, u) + 1803 offsetof(struct ipr_hostrcb_type_17_error, data))); 1804 } 1805 1806 /** 1807 * ipr_log_dual_ioa_error - Log a dual adapter error. 1808 * @ioa_cfg: ioa config struct 1809 * @hostrcb: hostrcb struct 1810 * 1811 * Return value: 1812 * none 1813 **/ 1814 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1815 struct ipr_hostrcb *hostrcb) 1816 { 1817 struct ipr_hostrcb_type_07_error *error; 1818 1819 error = &hostrcb->hcam.u.error.u.type_07_error; 1820 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1821 strim(error->failure_reason); 1822 1823 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 1824 be32_to_cpu(hostrcb->hcam.u.error.prc)); 1825 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd); 1826 ipr_log_hex_data(ioa_cfg, error->data, 1827 be32_to_cpu(hostrcb->hcam.length) - 1828 (offsetof(struct ipr_hostrcb_error, u) + 1829 offsetof(struct ipr_hostrcb_type_07_error, data))); 1830 } 1831 1832 static const struct { 1833 u8 active; 1834 char *desc; 1835 } path_active_desc[] = { 1836 { IPR_PATH_NO_INFO, "Path" }, 1837 { IPR_PATH_ACTIVE, "Active path" }, 1838 { IPR_PATH_NOT_ACTIVE, "Inactive path" } 1839 }; 1840 1841 static const struct { 1842 u8 state; 1843 char *desc; 1844 } path_state_desc[] = { 1845 { IPR_PATH_STATE_NO_INFO, "has no path state information available" }, 1846 { IPR_PATH_HEALTHY, "is healthy" }, 1847 { IPR_PATH_DEGRADED, "is degraded" }, 1848 { IPR_PATH_FAILED, "is failed" } 1849 }; 1850 1851 /** 1852 * ipr_log_fabric_path - Log a fabric path error 1853 * @hostrcb: hostrcb struct 1854 * @fabric: fabric descriptor 1855 * 1856 * Return value: 1857 * none 1858 **/ 1859 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb, 1860 struct ipr_hostrcb_fabric_desc *fabric) 1861 { 1862 int i, j; 1863 u8 path_state = fabric->path_state; 1864 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 1865 u8 state = path_state & IPR_PATH_STATE_MASK; 1866 1867 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 1868 if (path_active_desc[i].active != active) 1869 continue; 1870 1871 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 1872 if (path_state_desc[j].state != state) 1873 continue; 1874 1875 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) { 1876 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n", 1877 path_active_desc[i].desc, path_state_desc[j].desc, 1878 fabric->ioa_port); 1879 } else if (fabric->cascaded_expander == 0xff) { 1880 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n", 1881 path_active_desc[i].desc, path_state_desc[j].desc, 1882 fabric->ioa_port, fabric->phy); 1883 } else if (fabric->phy == 0xff) { 1884 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n", 1885 path_active_desc[i].desc, path_state_desc[j].desc, 1886 fabric->ioa_port, fabric->cascaded_expander); 1887 } else { 1888 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n", 1889 path_active_desc[i].desc, path_state_desc[j].desc, 1890 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1891 } 1892 return; 1893 } 1894 } 1895 1896 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state, 1897 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1898 } 1899 1900 /** 1901 * ipr_log64_fabric_path - Log a fabric path error 1902 * @hostrcb: hostrcb struct 1903 * @fabric: fabric descriptor 1904 * 1905 * Return value: 1906 * none 1907 **/ 1908 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb, 1909 struct ipr_hostrcb64_fabric_desc *fabric) 1910 { 1911 int i, j; 1912 u8 path_state = fabric->path_state; 1913 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 1914 u8 state = path_state & IPR_PATH_STATE_MASK; 1915 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1916 1917 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 1918 if (path_active_desc[i].active != active) 1919 continue; 1920 1921 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 1922 if (path_state_desc[j].state != state) 1923 continue; 1924 1925 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n", 1926 path_active_desc[i].desc, path_state_desc[j].desc, 1927 ipr_format_res_path(fabric->res_path, buffer, 1928 sizeof(buffer))); 1929 return; 1930 } 1931 } 1932 1933 ipr_err("Path state=%02X Resource Path=%s\n", path_state, 1934 ipr_format_res_path(fabric->res_path, buffer, sizeof(buffer))); 1935 } 1936 1937 static const struct { 1938 u8 type; 1939 char *desc; 1940 } path_type_desc[] = { 1941 { IPR_PATH_CFG_IOA_PORT, "IOA port" }, 1942 { IPR_PATH_CFG_EXP_PORT, "Expander port" }, 1943 { IPR_PATH_CFG_DEVICE_PORT, "Device port" }, 1944 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" } 1945 }; 1946 1947 static const struct { 1948 u8 status; 1949 char *desc; 1950 } path_status_desc[] = { 1951 { IPR_PATH_CFG_NO_PROB, "Functional" }, 1952 { IPR_PATH_CFG_DEGRADED, "Degraded" }, 1953 { IPR_PATH_CFG_FAILED, "Failed" }, 1954 { IPR_PATH_CFG_SUSPECT, "Suspect" }, 1955 { IPR_PATH_NOT_DETECTED, "Missing" }, 1956 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" } 1957 }; 1958 1959 static const char *link_rate[] = { 1960 "unknown", 1961 "disabled", 1962 "phy reset problem", 1963 "spinup hold", 1964 "port selector", 1965 "unknown", 1966 "unknown", 1967 "unknown", 1968 "1.5Gbps", 1969 "3.0Gbps", 1970 "unknown", 1971 "unknown", 1972 "unknown", 1973 "unknown", 1974 "unknown", 1975 "unknown" 1976 }; 1977 1978 /** 1979 * ipr_log_path_elem - Log a fabric path element. 1980 * @hostrcb: hostrcb struct 1981 * @cfg: fabric path element struct 1982 * 1983 * Return value: 1984 * none 1985 **/ 1986 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb, 1987 struct ipr_hostrcb_config_element *cfg) 1988 { 1989 int i, j; 1990 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 1991 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 1992 1993 if (type == IPR_PATH_CFG_NOT_EXIST) 1994 return; 1995 1996 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 1997 if (path_type_desc[i].type != type) 1998 continue; 1999 2000 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 2001 if (path_status_desc[j].status != status) 2002 continue; 2003 2004 if (type == IPR_PATH_CFG_IOA_PORT) { 2005 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n", 2006 path_status_desc[j].desc, path_type_desc[i].desc, 2007 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2008 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2009 } else { 2010 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) { 2011 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n", 2012 path_status_desc[j].desc, path_type_desc[i].desc, 2013 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2014 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2015 } else if (cfg->cascaded_expander == 0xff) { 2016 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, " 2017 "WWN=%08X%08X\n", path_status_desc[j].desc, 2018 path_type_desc[i].desc, cfg->phy, 2019 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2020 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2021 } else if (cfg->phy == 0xff) { 2022 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, " 2023 "WWN=%08X%08X\n", path_status_desc[j].desc, 2024 path_type_desc[i].desc, cfg->cascaded_expander, 2025 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2026 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2027 } else { 2028 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s " 2029 "WWN=%08X%08X\n", path_status_desc[j].desc, 2030 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy, 2031 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2032 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2033 } 2034 } 2035 return; 2036 } 2037 } 2038 2039 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s " 2040 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy, 2041 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2042 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2043 } 2044 2045 /** 2046 * ipr_log64_path_elem - Log a fabric path element. 2047 * @hostrcb: hostrcb struct 2048 * @cfg: fabric path element struct 2049 * 2050 * Return value: 2051 * none 2052 **/ 2053 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb, 2054 struct ipr_hostrcb64_config_element *cfg) 2055 { 2056 int i, j; 2057 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK; 2058 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 2059 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 2060 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2061 2062 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64) 2063 return; 2064 2065 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 2066 if (path_type_desc[i].type != type) 2067 continue; 2068 2069 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 2070 if (path_status_desc[j].status != status) 2071 continue; 2072 2073 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n", 2074 path_status_desc[j].desc, path_type_desc[i].desc, 2075 ipr_format_res_path(cfg->res_path, buffer, 2076 sizeof(buffer)), 2077 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2078 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2079 return; 2080 } 2081 } 2082 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s " 2083 "WWN=%08X%08X\n", cfg->type_status, 2084 ipr_format_res_path(cfg->res_path, buffer, sizeof(buffer)), 2085 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2086 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2087 } 2088 2089 /** 2090 * ipr_log_fabric_error - Log a fabric error. 2091 * @ioa_cfg: ioa config struct 2092 * @hostrcb: hostrcb struct 2093 * 2094 * Return value: 2095 * none 2096 **/ 2097 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 2098 struct ipr_hostrcb *hostrcb) 2099 { 2100 struct ipr_hostrcb_type_20_error *error; 2101 struct ipr_hostrcb_fabric_desc *fabric; 2102 struct ipr_hostrcb_config_element *cfg; 2103 int i, add_len; 2104 2105 error = &hostrcb->hcam.u.error.u.type_20_error; 2106 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2107 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 2108 2109 add_len = be32_to_cpu(hostrcb->hcam.length) - 2110 (offsetof(struct ipr_hostrcb_error, u) + 2111 offsetof(struct ipr_hostrcb_type_20_error, desc)); 2112 2113 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 2114 ipr_log_fabric_path(hostrcb, fabric); 2115 for_each_fabric_cfg(fabric, cfg) 2116 ipr_log_path_elem(hostrcb, cfg); 2117 2118 add_len -= be16_to_cpu(fabric->length); 2119 fabric = (struct ipr_hostrcb_fabric_desc *) 2120 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 2121 } 2122 2123 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len); 2124 } 2125 2126 /** 2127 * ipr_log_sis64_array_error - Log a sis64 array error. 2128 * @ioa_cfg: ioa config struct 2129 * @hostrcb: hostrcb struct 2130 * 2131 * Return value: 2132 * none 2133 **/ 2134 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg, 2135 struct ipr_hostrcb *hostrcb) 2136 { 2137 int i, num_entries; 2138 struct ipr_hostrcb_type_24_error *error; 2139 struct ipr_hostrcb64_array_data_entry *array_entry; 2140 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2141 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 2142 2143 error = &hostrcb->hcam.u.error64.u.type_24_error; 2144 2145 ipr_err_separator; 2146 2147 ipr_err("RAID %s Array Configuration: %s\n", 2148 error->protection_level, 2149 ipr_format_res_path(error->last_res_path, buffer, sizeof(buffer))); 2150 2151 ipr_err_separator; 2152 2153 array_entry = error->array_member; 2154 num_entries = min_t(u32, error->num_entries, 2155 ARRAY_SIZE(error->array_member)); 2156 2157 for (i = 0; i < num_entries; i++, array_entry++) { 2158 2159 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 2160 continue; 2161 2162 if (error->exposed_mode_adn == i) 2163 ipr_err("Exposed Array Member %d:\n", i); 2164 else 2165 ipr_err("Array Member %d:\n", i); 2166 2167 ipr_err("Array Member %d:\n", i); 2168 ipr_log_ext_vpd(&array_entry->vpd); 2169 ipr_err("Current Location: %s\n", 2170 ipr_format_res_path(array_entry->res_path, buffer, 2171 sizeof(buffer))); 2172 ipr_err("Expected Location: %s\n", 2173 ipr_format_res_path(array_entry->expected_res_path, 2174 buffer, sizeof(buffer))); 2175 2176 ipr_err_separator; 2177 } 2178 } 2179 2180 /** 2181 * ipr_log_sis64_fabric_error - Log a sis64 fabric error. 2182 * @ioa_cfg: ioa config struct 2183 * @hostrcb: hostrcb struct 2184 * 2185 * Return value: 2186 * none 2187 **/ 2188 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 2189 struct ipr_hostrcb *hostrcb) 2190 { 2191 struct ipr_hostrcb_type_30_error *error; 2192 struct ipr_hostrcb64_fabric_desc *fabric; 2193 struct ipr_hostrcb64_config_element *cfg; 2194 int i, add_len; 2195 2196 error = &hostrcb->hcam.u.error64.u.type_30_error; 2197 2198 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2199 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 2200 2201 add_len = be32_to_cpu(hostrcb->hcam.length) - 2202 (offsetof(struct ipr_hostrcb64_error, u) + 2203 offsetof(struct ipr_hostrcb_type_30_error, desc)); 2204 2205 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 2206 ipr_log64_fabric_path(hostrcb, fabric); 2207 for_each_fabric_cfg(fabric, cfg) 2208 ipr_log64_path_elem(hostrcb, cfg); 2209 2210 add_len -= be16_to_cpu(fabric->length); 2211 fabric = (struct ipr_hostrcb64_fabric_desc *) 2212 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 2213 } 2214 2215 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len); 2216 } 2217 2218 /** 2219 * ipr_log_generic_error - Log an adapter error. 2220 * @ioa_cfg: ioa config struct 2221 * @hostrcb: hostrcb struct 2222 * 2223 * Return value: 2224 * none 2225 **/ 2226 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, 2227 struct ipr_hostrcb *hostrcb) 2228 { 2229 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data, 2230 be32_to_cpu(hostrcb->hcam.length)); 2231 } 2232 2233 /** 2234 * ipr_get_error - Find the specfied IOASC in the ipr_error_table. 2235 * @ioasc: IOASC 2236 * 2237 * This function will return the index of into the ipr_error_table 2238 * for the specified IOASC. If the IOASC is not in the table, 2239 * 0 will be returned, which points to the entry used for unknown errors. 2240 * 2241 * Return value: 2242 * index into the ipr_error_table 2243 **/ 2244 static u32 ipr_get_error(u32 ioasc) 2245 { 2246 int i; 2247 2248 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) 2249 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK)) 2250 return i; 2251 2252 return 0; 2253 } 2254 2255 /** 2256 * ipr_handle_log_data - Log an adapter error. 2257 * @ioa_cfg: ioa config struct 2258 * @hostrcb: hostrcb struct 2259 * 2260 * This function logs an adapter error to the system. 2261 * 2262 * Return value: 2263 * none 2264 **/ 2265 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 2266 struct ipr_hostrcb *hostrcb) 2267 { 2268 u32 ioasc; 2269 int error_index; 2270 2271 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) 2272 return; 2273 2274 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) 2275 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); 2276 2277 if (ioa_cfg->sis64) 2278 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc); 2279 else 2280 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 2281 2282 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET || 2283 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) { 2284 /* Tell the midlayer we had a bus reset so it will handle the UA properly */ 2285 scsi_report_bus_reset(ioa_cfg->host, 2286 hostrcb->hcam.u.error.fd_res_addr.bus); 2287 } 2288 2289 error_index = ipr_get_error(ioasc); 2290 2291 if (!ipr_error_table[error_index].log_hcam) 2292 return; 2293 2294 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error); 2295 2296 /* Set indication we have logged an error */ 2297 ioa_cfg->errors_logged++; 2298 2299 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam) 2300 return; 2301 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw)) 2302 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw)); 2303 2304 switch (hostrcb->hcam.overlay_id) { 2305 case IPR_HOST_RCB_OVERLAY_ID_2: 2306 ipr_log_cache_error(ioa_cfg, hostrcb); 2307 break; 2308 case IPR_HOST_RCB_OVERLAY_ID_3: 2309 ipr_log_config_error(ioa_cfg, hostrcb); 2310 break; 2311 case IPR_HOST_RCB_OVERLAY_ID_4: 2312 case IPR_HOST_RCB_OVERLAY_ID_6: 2313 ipr_log_array_error(ioa_cfg, hostrcb); 2314 break; 2315 case IPR_HOST_RCB_OVERLAY_ID_7: 2316 ipr_log_dual_ioa_error(ioa_cfg, hostrcb); 2317 break; 2318 case IPR_HOST_RCB_OVERLAY_ID_12: 2319 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb); 2320 break; 2321 case IPR_HOST_RCB_OVERLAY_ID_13: 2322 ipr_log_enhanced_config_error(ioa_cfg, hostrcb); 2323 break; 2324 case IPR_HOST_RCB_OVERLAY_ID_14: 2325 case IPR_HOST_RCB_OVERLAY_ID_16: 2326 ipr_log_enhanced_array_error(ioa_cfg, hostrcb); 2327 break; 2328 case IPR_HOST_RCB_OVERLAY_ID_17: 2329 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb); 2330 break; 2331 case IPR_HOST_RCB_OVERLAY_ID_20: 2332 ipr_log_fabric_error(ioa_cfg, hostrcb); 2333 break; 2334 case IPR_HOST_RCB_OVERLAY_ID_23: 2335 ipr_log_sis64_config_error(ioa_cfg, hostrcb); 2336 break; 2337 case IPR_HOST_RCB_OVERLAY_ID_24: 2338 case IPR_HOST_RCB_OVERLAY_ID_26: 2339 ipr_log_sis64_array_error(ioa_cfg, hostrcb); 2340 break; 2341 case IPR_HOST_RCB_OVERLAY_ID_30: 2342 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb); 2343 break; 2344 case IPR_HOST_RCB_OVERLAY_ID_1: 2345 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: 2346 default: 2347 ipr_log_generic_error(ioa_cfg, hostrcb); 2348 break; 2349 } 2350 } 2351 2352 /** 2353 * ipr_process_error - Op done function for an adapter error log. 2354 * @ipr_cmd: ipr command struct 2355 * 2356 * This function is the op done function for an error log host 2357 * controlled async from the adapter. It will log the error and 2358 * send the HCAM back to the adapter. 2359 * 2360 * Return value: 2361 * none 2362 **/ 2363 static void ipr_process_error(struct ipr_cmnd *ipr_cmd) 2364 { 2365 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2366 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 2367 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 2368 u32 fd_ioasc; 2369 2370 if (ioa_cfg->sis64) 2371 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc); 2372 else 2373 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 2374 2375 list_del(&hostrcb->queue); 2376 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 2377 2378 if (!ioasc) { 2379 ipr_handle_log_data(ioa_cfg, hostrcb); 2380 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED) 2381 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV); 2382 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) { 2383 dev_err(&ioa_cfg->pdev->dev, 2384 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 2385 } 2386 2387 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 2388 } 2389 2390 /** 2391 * ipr_timeout - An internally generated op has timed out. 2392 * @ipr_cmd: ipr command struct 2393 * 2394 * This function blocks host requests and initiates an 2395 * adapter reset. 2396 * 2397 * Return value: 2398 * none 2399 **/ 2400 static void ipr_timeout(struct ipr_cmnd *ipr_cmd) 2401 { 2402 unsigned long lock_flags = 0; 2403 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2404 2405 ENTER; 2406 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2407 2408 ioa_cfg->errors_logged++; 2409 dev_err(&ioa_cfg->pdev->dev, 2410 "Adapter being reset due to command timeout.\n"); 2411 2412 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 2413 ioa_cfg->sdt_state = GET_DUMP; 2414 2415 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) 2416 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2417 2418 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2419 LEAVE; 2420 } 2421 2422 /** 2423 * ipr_oper_timeout - Adapter timed out transitioning to operational 2424 * @ipr_cmd: ipr command struct 2425 * 2426 * This function blocks host requests and initiates an 2427 * adapter reset. 2428 * 2429 * Return value: 2430 * none 2431 **/ 2432 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) 2433 { 2434 unsigned long lock_flags = 0; 2435 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2436 2437 ENTER; 2438 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2439 2440 ioa_cfg->errors_logged++; 2441 dev_err(&ioa_cfg->pdev->dev, 2442 "Adapter timed out transitioning to operational.\n"); 2443 2444 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 2445 ioa_cfg->sdt_state = GET_DUMP; 2446 2447 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { 2448 if (ipr_fastfail) 2449 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 2450 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2451 } 2452 2453 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2454 LEAVE; 2455 } 2456 2457 /** 2458 * ipr_reset_reload - Reset/Reload the IOA 2459 * @ioa_cfg: ioa config struct 2460 * @shutdown_type: shutdown type 2461 * 2462 * This function resets the adapter and re-initializes it. 2463 * This function assumes that all new host commands have been stopped. 2464 * Return value: 2465 * SUCCESS / FAILED 2466 **/ 2467 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg, 2468 enum ipr_shutdown_type shutdown_type) 2469 { 2470 if (!ioa_cfg->in_reset_reload) 2471 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 2472 2473 spin_unlock_irq(ioa_cfg->host->host_lock); 2474 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2475 spin_lock_irq(ioa_cfg->host->host_lock); 2476 2477 /* If we got hit with a host reset while we were already resetting 2478 the adapter for some reason, and the reset failed. */ 2479 if (ioa_cfg->ioa_is_dead) { 2480 ipr_trace; 2481 return FAILED; 2482 } 2483 2484 return SUCCESS; 2485 } 2486 2487 /** 2488 * ipr_find_ses_entry - Find matching SES in SES table 2489 * @res: resource entry struct of SES 2490 * 2491 * Return value: 2492 * pointer to SES table entry / NULL on failure 2493 **/ 2494 static const struct ipr_ses_table_entry * 2495 ipr_find_ses_entry(struct ipr_resource_entry *res) 2496 { 2497 int i, j, matches; 2498 struct ipr_std_inq_vpids *vpids; 2499 const struct ipr_ses_table_entry *ste = ipr_ses_table; 2500 2501 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { 2502 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { 2503 if (ste->compare_product_id_byte[j] == 'X') { 2504 vpids = &res->std_inq_data.vpids; 2505 if (vpids->product_id[j] == ste->product_id[j]) 2506 matches++; 2507 else 2508 break; 2509 } else 2510 matches++; 2511 } 2512 2513 if (matches == IPR_PROD_ID_LEN) 2514 return ste; 2515 } 2516 2517 return NULL; 2518 } 2519 2520 /** 2521 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus 2522 * @ioa_cfg: ioa config struct 2523 * @bus: SCSI bus 2524 * @bus_width: bus width 2525 * 2526 * Return value: 2527 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz 2528 * For a 2-byte wide SCSI bus, the maximum transfer speed is 2529 * twice the maximum transfer rate (e.g. for a wide enabled bus, 2530 * max 160MHz = max 320MB/sec). 2531 **/ 2532 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) 2533 { 2534 struct ipr_resource_entry *res; 2535 const struct ipr_ses_table_entry *ste; 2536 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); 2537 2538 /* Loop through each config table entry in the config table buffer */ 2539 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2540 if (!(IPR_IS_SES_DEVICE(res->std_inq_data))) 2541 continue; 2542 2543 if (bus != res->bus) 2544 continue; 2545 2546 if (!(ste = ipr_find_ses_entry(res))) 2547 continue; 2548 2549 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); 2550 } 2551 2552 return max_xfer_rate; 2553 } 2554 2555 /** 2556 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA 2557 * @ioa_cfg: ioa config struct 2558 * @max_delay: max delay in micro-seconds to wait 2559 * 2560 * Waits for an IODEBUG ACK from the IOA, doing busy looping. 2561 * 2562 * Return value: 2563 * 0 on success / other on failure 2564 **/ 2565 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) 2566 { 2567 volatile u32 pcii_reg; 2568 int delay = 1; 2569 2570 /* Read interrupt reg until IOA signals IO Debug Acknowledge */ 2571 while (delay < max_delay) { 2572 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 2573 2574 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) 2575 return 0; 2576 2577 /* udelay cannot be used if delay is more than a few milliseconds */ 2578 if ((delay / 1000) > MAX_UDELAY_MS) 2579 mdelay(delay / 1000); 2580 else 2581 udelay(delay); 2582 2583 delay += delay; 2584 } 2585 return -EIO; 2586 } 2587 2588 /** 2589 * ipr_get_sis64_dump_data_section - Dump IOA memory 2590 * @ioa_cfg: ioa config struct 2591 * @start_addr: adapter address to dump 2592 * @dest: destination kernel buffer 2593 * @length_in_words: length to dump in 4 byte words 2594 * 2595 * Return value: 2596 * 0 on success 2597 **/ 2598 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg, 2599 u32 start_addr, 2600 __be32 *dest, u32 length_in_words) 2601 { 2602 int i; 2603 2604 for (i = 0; i < length_in_words; i++) { 2605 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg); 2606 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg)); 2607 dest++; 2608 } 2609 2610 return 0; 2611 } 2612 2613 /** 2614 * ipr_get_ldump_data_section - Dump IOA memory 2615 * @ioa_cfg: ioa config struct 2616 * @start_addr: adapter address to dump 2617 * @dest: destination kernel buffer 2618 * @length_in_words: length to dump in 4 byte words 2619 * 2620 * Return value: 2621 * 0 on success / -EIO on failure 2622 **/ 2623 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, 2624 u32 start_addr, 2625 __be32 *dest, u32 length_in_words) 2626 { 2627 volatile u32 temp_pcii_reg; 2628 int i, delay = 0; 2629 2630 if (ioa_cfg->sis64) 2631 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr, 2632 dest, length_in_words); 2633 2634 /* Write IOA interrupt reg starting LDUMP state */ 2635 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), 2636 ioa_cfg->regs.set_uproc_interrupt_reg32); 2637 2638 /* Wait for IO debug acknowledge */ 2639 if (ipr_wait_iodbg_ack(ioa_cfg, 2640 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { 2641 dev_err(&ioa_cfg->pdev->dev, 2642 "IOA dump long data transfer timeout\n"); 2643 return -EIO; 2644 } 2645 2646 /* Signal LDUMP interlocked - clear IO debug ack */ 2647 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2648 ioa_cfg->regs.clr_interrupt_reg); 2649 2650 /* Write Mailbox with starting address */ 2651 writel(start_addr, ioa_cfg->ioa_mailbox); 2652 2653 /* Signal address valid - clear IOA Reset alert */ 2654 writel(IPR_UPROCI_RESET_ALERT, 2655 ioa_cfg->regs.clr_uproc_interrupt_reg32); 2656 2657 for (i = 0; i < length_in_words; i++) { 2658 /* Wait for IO debug acknowledge */ 2659 if (ipr_wait_iodbg_ack(ioa_cfg, 2660 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { 2661 dev_err(&ioa_cfg->pdev->dev, 2662 "IOA dump short data transfer timeout\n"); 2663 return -EIO; 2664 } 2665 2666 /* Read data from mailbox and increment destination pointer */ 2667 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); 2668 dest++; 2669 2670 /* For all but the last word of data, signal data received */ 2671 if (i < (length_in_words - 1)) { 2672 /* Signal dump data received - Clear IO debug Ack */ 2673 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2674 ioa_cfg->regs.clr_interrupt_reg); 2675 } 2676 } 2677 2678 /* Signal end of block transfer. Set reset alert then clear IO debug ack */ 2679 writel(IPR_UPROCI_RESET_ALERT, 2680 ioa_cfg->regs.set_uproc_interrupt_reg32); 2681 2682 writel(IPR_UPROCI_IO_DEBUG_ALERT, 2683 ioa_cfg->regs.clr_uproc_interrupt_reg32); 2684 2685 /* Signal dump data received - Clear IO debug Ack */ 2686 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2687 ioa_cfg->regs.clr_interrupt_reg); 2688 2689 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ 2690 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { 2691 temp_pcii_reg = 2692 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); 2693 2694 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) 2695 return 0; 2696 2697 udelay(10); 2698 delay += 10; 2699 } 2700 2701 return 0; 2702 } 2703 2704 #ifdef CONFIG_SCSI_IPR_DUMP 2705 /** 2706 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer 2707 * @ioa_cfg: ioa config struct 2708 * @pci_address: adapter address 2709 * @length: length of data to copy 2710 * 2711 * Copy data from PCI adapter to kernel buffer. 2712 * Note: length MUST be a 4 byte multiple 2713 * Return value: 2714 * 0 on success / other on failure 2715 **/ 2716 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, 2717 unsigned long pci_address, u32 length) 2718 { 2719 int bytes_copied = 0; 2720 int cur_len, rc, rem_len, rem_page_len; 2721 __be32 *page; 2722 unsigned long lock_flags = 0; 2723 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; 2724 2725 while (bytes_copied < length && 2726 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) { 2727 if (ioa_dump->page_offset >= PAGE_SIZE || 2728 ioa_dump->page_offset == 0) { 2729 page = (__be32 *)__get_free_page(GFP_ATOMIC); 2730 2731 if (!page) { 2732 ipr_trace; 2733 return bytes_copied; 2734 } 2735 2736 ioa_dump->page_offset = 0; 2737 ioa_dump->ioa_data[ioa_dump->next_page_index] = page; 2738 ioa_dump->next_page_index++; 2739 } else 2740 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; 2741 2742 rem_len = length - bytes_copied; 2743 rem_page_len = PAGE_SIZE - ioa_dump->page_offset; 2744 cur_len = min(rem_len, rem_page_len); 2745 2746 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2747 if (ioa_cfg->sdt_state == ABORT_DUMP) { 2748 rc = -EIO; 2749 } else { 2750 rc = ipr_get_ldump_data_section(ioa_cfg, 2751 pci_address + bytes_copied, 2752 &page[ioa_dump->page_offset / 4], 2753 (cur_len / sizeof(u32))); 2754 } 2755 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2756 2757 if (!rc) { 2758 ioa_dump->page_offset += cur_len; 2759 bytes_copied += cur_len; 2760 } else { 2761 ipr_trace; 2762 break; 2763 } 2764 schedule(); 2765 } 2766 2767 return bytes_copied; 2768 } 2769 2770 /** 2771 * ipr_init_dump_entry_hdr - Initialize a dump entry header. 2772 * @hdr: dump entry header struct 2773 * 2774 * Return value: 2775 * nothing 2776 **/ 2777 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) 2778 { 2779 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; 2780 hdr->num_elems = 1; 2781 hdr->offset = sizeof(*hdr); 2782 hdr->status = IPR_DUMP_STATUS_SUCCESS; 2783 } 2784 2785 /** 2786 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. 2787 * @ioa_cfg: ioa config struct 2788 * @driver_dump: driver dump struct 2789 * 2790 * Return value: 2791 * nothing 2792 **/ 2793 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, 2794 struct ipr_driver_dump *driver_dump) 2795 { 2796 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2797 2798 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); 2799 driver_dump->ioa_type_entry.hdr.len = 2800 sizeof(struct ipr_dump_ioa_type_entry) - 2801 sizeof(struct ipr_dump_entry_header); 2802 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2803 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; 2804 driver_dump->ioa_type_entry.type = ioa_cfg->type; 2805 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | 2806 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | 2807 ucode_vpd->minor_release[1]; 2808 driver_dump->hdr.num_entries++; 2809 } 2810 2811 /** 2812 * ipr_dump_version_data - Fill in the driver version in the dump. 2813 * @ioa_cfg: ioa config struct 2814 * @driver_dump: driver dump struct 2815 * 2816 * Return value: 2817 * nothing 2818 **/ 2819 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, 2820 struct ipr_driver_dump *driver_dump) 2821 { 2822 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); 2823 driver_dump->version_entry.hdr.len = 2824 sizeof(struct ipr_dump_version_entry) - 2825 sizeof(struct ipr_dump_entry_header); 2826 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2827 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; 2828 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); 2829 driver_dump->hdr.num_entries++; 2830 } 2831 2832 /** 2833 * ipr_dump_trace_data - Fill in the IOA trace in the dump. 2834 * @ioa_cfg: ioa config struct 2835 * @driver_dump: driver dump struct 2836 * 2837 * Return value: 2838 * nothing 2839 **/ 2840 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, 2841 struct ipr_driver_dump *driver_dump) 2842 { 2843 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); 2844 driver_dump->trace_entry.hdr.len = 2845 sizeof(struct ipr_dump_trace_entry) - 2846 sizeof(struct ipr_dump_entry_header); 2847 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2848 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; 2849 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); 2850 driver_dump->hdr.num_entries++; 2851 } 2852 2853 /** 2854 * ipr_dump_location_data - Fill in the IOA location in the dump. 2855 * @ioa_cfg: ioa config struct 2856 * @driver_dump: driver dump struct 2857 * 2858 * Return value: 2859 * nothing 2860 **/ 2861 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, 2862 struct ipr_driver_dump *driver_dump) 2863 { 2864 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); 2865 driver_dump->location_entry.hdr.len = 2866 sizeof(struct ipr_dump_location_entry) - 2867 sizeof(struct ipr_dump_entry_header); 2868 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2869 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; 2870 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev)); 2871 driver_dump->hdr.num_entries++; 2872 } 2873 2874 /** 2875 * ipr_get_ioa_dump - Perform a dump of the driver and adapter. 2876 * @ioa_cfg: ioa config struct 2877 * @dump: dump struct 2878 * 2879 * Return value: 2880 * nothing 2881 **/ 2882 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) 2883 { 2884 unsigned long start_addr, sdt_word; 2885 unsigned long lock_flags = 0; 2886 struct ipr_driver_dump *driver_dump = &dump->driver_dump; 2887 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; 2888 u32 num_entries, start_off, end_off; 2889 u32 bytes_to_copy, bytes_copied, rc; 2890 struct ipr_sdt *sdt; 2891 int valid = 1; 2892 int i; 2893 2894 ENTER; 2895 2896 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2897 2898 if (ioa_cfg->sdt_state != GET_DUMP) { 2899 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2900 return; 2901 } 2902 2903 if (ioa_cfg->sis64) { 2904 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2905 ssleep(IPR_DUMP_DELAY_SECONDS); 2906 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2907 } 2908 2909 start_addr = readl(ioa_cfg->ioa_mailbox); 2910 2911 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) { 2912 dev_err(&ioa_cfg->pdev->dev, 2913 "Invalid dump table format: %lx\n", start_addr); 2914 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2915 return; 2916 } 2917 2918 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); 2919 2920 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; 2921 2922 /* Initialize the overall dump header */ 2923 driver_dump->hdr.len = sizeof(struct ipr_driver_dump); 2924 driver_dump->hdr.num_entries = 1; 2925 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); 2926 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; 2927 driver_dump->hdr.os = IPR_DUMP_OS_LINUX; 2928 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; 2929 2930 ipr_dump_version_data(ioa_cfg, driver_dump); 2931 ipr_dump_location_data(ioa_cfg, driver_dump); 2932 ipr_dump_ioa_type_data(ioa_cfg, driver_dump); 2933 ipr_dump_trace_data(ioa_cfg, driver_dump); 2934 2935 /* Update dump_header */ 2936 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); 2937 2938 /* IOA Dump entry */ 2939 ipr_init_dump_entry_hdr(&ioa_dump->hdr); 2940 ioa_dump->hdr.len = 0; 2941 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2942 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; 2943 2944 /* First entries in sdt are actually a list of dump addresses and 2945 lengths to gather the real dump data. sdt represents the pointer 2946 to the ioa generated dump table. Dump data will be extracted based 2947 on entries in this table */ 2948 sdt = &ioa_dump->sdt; 2949 2950 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, 2951 sizeof(struct ipr_sdt) / sizeof(__be32)); 2952 2953 /* Smart Dump table is ready to use and the first entry is valid */ 2954 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) && 2955 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) { 2956 dev_err(&ioa_cfg->pdev->dev, 2957 "Dump of IOA failed. Dump table not valid: %d, %X.\n", 2958 rc, be32_to_cpu(sdt->hdr.state)); 2959 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; 2960 ioa_cfg->sdt_state = DUMP_OBTAINED; 2961 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2962 return; 2963 } 2964 2965 num_entries = be32_to_cpu(sdt->hdr.num_entries_used); 2966 2967 if (num_entries > IPR_NUM_SDT_ENTRIES) 2968 num_entries = IPR_NUM_SDT_ENTRIES; 2969 2970 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2971 2972 for (i = 0; i < num_entries; i++) { 2973 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) { 2974 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 2975 break; 2976 } 2977 2978 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { 2979 sdt_word = be32_to_cpu(sdt->entry[i].start_token); 2980 if (ioa_cfg->sis64) 2981 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token); 2982 else { 2983 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; 2984 end_off = be32_to_cpu(sdt->entry[i].end_token); 2985 2986 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) 2987 bytes_to_copy = end_off - start_off; 2988 else 2989 valid = 0; 2990 } 2991 if (valid) { 2992 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) { 2993 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; 2994 continue; 2995 } 2996 2997 /* Copy data from adapter to driver buffers */ 2998 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, 2999 bytes_to_copy); 3000 3001 ioa_dump->hdr.len += bytes_copied; 3002 3003 if (bytes_copied != bytes_to_copy) { 3004 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 3005 break; 3006 } 3007 } 3008 } 3009 } 3010 3011 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); 3012 3013 /* Update dump_header */ 3014 driver_dump->hdr.len += ioa_dump->hdr.len; 3015 wmb(); 3016 ioa_cfg->sdt_state = DUMP_OBTAINED; 3017 LEAVE; 3018 } 3019 3020 #else 3021 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0) 3022 #endif 3023 3024 /** 3025 * ipr_release_dump - Free adapter dump memory 3026 * @kref: kref struct 3027 * 3028 * Return value: 3029 * nothing 3030 **/ 3031 static void ipr_release_dump(struct kref *kref) 3032 { 3033 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref); 3034 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; 3035 unsigned long lock_flags = 0; 3036 int i; 3037 3038 ENTER; 3039 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3040 ioa_cfg->dump = NULL; 3041 ioa_cfg->sdt_state = INACTIVE; 3042 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3043 3044 for (i = 0; i < dump->ioa_dump.next_page_index; i++) 3045 free_page((unsigned long) dump->ioa_dump.ioa_data[i]); 3046 3047 kfree(dump); 3048 LEAVE; 3049 } 3050 3051 /** 3052 * ipr_worker_thread - Worker thread 3053 * @work: ioa config struct 3054 * 3055 * Called at task level from a work thread. This function takes care 3056 * of adding and removing device from the mid-layer as configuration 3057 * changes are detected by the adapter. 3058 * 3059 * Return value: 3060 * nothing 3061 **/ 3062 static void ipr_worker_thread(struct work_struct *work) 3063 { 3064 unsigned long lock_flags; 3065 struct ipr_resource_entry *res; 3066 struct scsi_device *sdev; 3067 struct ipr_dump *dump; 3068 struct ipr_ioa_cfg *ioa_cfg = 3069 container_of(work, struct ipr_ioa_cfg, work_q); 3070 u8 bus, target, lun; 3071 int did_work; 3072 3073 ENTER; 3074 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3075 3076 if (ioa_cfg->sdt_state == GET_DUMP) { 3077 dump = ioa_cfg->dump; 3078 if (!dump) { 3079 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3080 return; 3081 } 3082 kref_get(&dump->kref); 3083 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3084 ipr_get_ioa_dump(ioa_cfg, dump); 3085 kref_put(&dump->kref, ipr_release_dump); 3086 3087 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3088 if (ioa_cfg->sdt_state == DUMP_OBTAINED) 3089 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3090 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3091 return; 3092 } 3093 3094 restart: 3095 do { 3096 did_work = 0; 3097 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) { 3098 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3099 return; 3100 } 3101 3102 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3103 if (res->del_from_ml && res->sdev) { 3104 did_work = 1; 3105 sdev = res->sdev; 3106 if (!scsi_device_get(sdev)) { 3107 if (!res->add_to_ml) 3108 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 3109 else 3110 res->del_from_ml = 0; 3111 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3112 scsi_remove_device(sdev); 3113 scsi_device_put(sdev); 3114 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3115 } 3116 break; 3117 } 3118 } 3119 } while(did_work); 3120 3121 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3122 if (res->add_to_ml) { 3123 bus = res->bus; 3124 target = res->target; 3125 lun = res->lun; 3126 res->add_to_ml = 0; 3127 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3128 scsi_add_device(ioa_cfg->host, bus, target, lun); 3129 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3130 goto restart; 3131 } 3132 } 3133 3134 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3135 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE); 3136 LEAVE; 3137 } 3138 3139 #ifdef CONFIG_SCSI_IPR_TRACE 3140 /** 3141 * ipr_read_trace - Dump the adapter trace 3142 * @filp: open sysfs file 3143 * @kobj: kobject struct 3144 * @bin_attr: bin_attribute struct 3145 * @buf: buffer 3146 * @off: offset 3147 * @count: buffer size 3148 * 3149 * Return value: 3150 * number of bytes printed to buffer 3151 **/ 3152 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj, 3153 struct bin_attribute *bin_attr, 3154 char *buf, loff_t off, size_t count) 3155 { 3156 struct device *dev = container_of(kobj, struct device, kobj); 3157 struct Scsi_Host *shost = class_to_shost(dev); 3158 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3159 unsigned long lock_flags = 0; 3160 ssize_t ret; 3161 3162 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3163 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace, 3164 IPR_TRACE_SIZE); 3165 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3166 3167 return ret; 3168 } 3169 3170 static struct bin_attribute ipr_trace_attr = { 3171 .attr = { 3172 .name = "trace", 3173 .mode = S_IRUGO, 3174 }, 3175 .size = 0, 3176 .read = ipr_read_trace, 3177 }; 3178 #endif 3179 3180 /** 3181 * ipr_show_fw_version - Show the firmware version 3182 * @dev: class device struct 3183 * @buf: buffer 3184 * 3185 * Return value: 3186 * number of bytes printed to buffer 3187 **/ 3188 static ssize_t ipr_show_fw_version(struct device *dev, 3189 struct device_attribute *attr, char *buf) 3190 { 3191 struct Scsi_Host *shost = class_to_shost(dev); 3192 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3193 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 3194 unsigned long lock_flags = 0; 3195 int len; 3196 3197 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3198 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 3199 ucode_vpd->major_release, ucode_vpd->card_type, 3200 ucode_vpd->minor_release[0], 3201 ucode_vpd->minor_release[1]); 3202 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3203 return len; 3204 } 3205 3206 static struct device_attribute ipr_fw_version_attr = { 3207 .attr = { 3208 .name = "fw_version", 3209 .mode = S_IRUGO, 3210 }, 3211 .show = ipr_show_fw_version, 3212 }; 3213 3214 /** 3215 * ipr_show_log_level - Show the adapter's error logging level 3216 * @dev: class device struct 3217 * @buf: buffer 3218 * 3219 * Return value: 3220 * number of bytes printed to buffer 3221 **/ 3222 static ssize_t ipr_show_log_level(struct device *dev, 3223 struct device_attribute *attr, char *buf) 3224 { 3225 struct Scsi_Host *shost = class_to_shost(dev); 3226 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3227 unsigned long lock_flags = 0; 3228 int len; 3229 3230 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3231 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 3232 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3233 return len; 3234 } 3235 3236 /** 3237 * ipr_store_log_level - Change the adapter's error logging level 3238 * @dev: class device struct 3239 * @buf: buffer 3240 * 3241 * Return value: 3242 * number of bytes printed to buffer 3243 **/ 3244 static ssize_t ipr_store_log_level(struct device *dev, 3245 struct device_attribute *attr, 3246 const char *buf, size_t count) 3247 { 3248 struct Scsi_Host *shost = class_to_shost(dev); 3249 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3250 unsigned long lock_flags = 0; 3251 3252 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3253 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 3254 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3255 return strlen(buf); 3256 } 3257 3258 static struct device_attribute ipr_log_level_attr = { 3259 .attr = { 3260 .name = "log_level", 3261 .mode = S_IRUGO | S_IWUSR, 3262 }, 3263 .show = ipr_show_log_level, 3264 .store = ipr_store_log_level 3265 }; 3266 3267 /** 3268 * ipr_store_diagnostics - IOA Diagnostics interface 3269 * @dev: device struct 3270 * @buf: buffer 3271 * @count: buffer size 3272 * 3273 * This function will reset the adapter and wait a reasonable 3274 * amount of time for any errors that the adapter might log. 3275 * 3276 * Return value: 3277 * count on success / other on failure 3278 **/ 3279 static ssize_t ipr_store_diagnostics(struct device *dev, 3280 struct device_attribute *attr, 3281 const char *buf, size_t count) 3282 { 3283 struct Scsi_Host *shost = class_to_shost(dev); 3284 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3285 unsigned long lock_flags = 0; 3286 int rc = count; 3287 3288 if (!capable(CAP_SYS_ADMIN)) 3289 return -EACCES; 3290 3291 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3292 while(ioa_cfg->in_reset_reload) { 3293 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3294 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3295 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3296 } 3297 3298 ioa_cfg->errors_logged = 0; 3299 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3300 3301 if (ioa_cfg->in_reset_reload) { 3302 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3303 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3304 3305 /* Wait for a second for any errors to be logged */ 3306 msleep(1000); 3307 } else { 3308 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3309 return -EIO; 3310 } 3311 3312 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3313 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 3314 rc = -EIO; 3315 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3316 3317 return rc; 3318 } 3319 3320 static struct device_attribute ipr_diagnostics_attr = { 3321 .attr = { 3322 .name = "run_diagnostics", 3323 .mode = S_IWUSR, 3324 }, 3325 .store = ipr_store_diagnostics 3326 }; 3327 3328 /** 3329 * ipr_show_adapter_state - Show the adapter's state 3330 * @class_dev: device struct 3331 * @buf: buffer 3332 * 3333 * Return value: 3334 * number of bytes printed to buffer 3335 **/ 3336 static ssize_t ipr_show_adapter_state(struct device *dev, 3337 struct device_attribute *attr, char *buf) 3338 { 3339 struct Scsi_Host *shost = class_to_shost(dev); 3340 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3341 unsigned long lock_flags = 0; 3342 int len; 3343 3344 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3345 if (ioa_cfg->ioa_is_dead) 3346 len = snprintf(buf, PAGE_SIZE, "offline\n"); 3347 else 3348 len = snprintf(buf, PAGE_SIZE, "online\n"); 3349 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3350 return len; 3351 } 3352 3353 /** 3354 * ipr_store_adapter_state - Change adapter state 3355 * @dev: device struct 3356 * @buf: buffer 3357 * @count: buffer size 3358 * 3359 * This function will change the adapter's state. 3360 * 3361 * Return value: 3362 * count on success / other on failure 3363 **/ 3364 static ssize_t ipr_store_adapter_state(struct device *dev, 3365 struct device_attribute *attr, 3366 const char *buf, size_t count) 3367 { 3368 struct Scsi_Host *shost = class_to_shost(dev); 3369 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3370 unsigned long lock_flags; 3371 int result = count; 3372 3373 if (!capable(CAP_SYS_ADMIN)) 3374 return -EACCES; 3375 3376 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3377 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) { 3378 ioa_cfg->ioa_is_dead = 0; 3379 ioa_cfg->reset_retries = 0; 3380 ioa_cfg->in_ioa_bringdown = 0; 3381 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3382 } 3383 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3384 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3385 3386 return result; 3387 } 3388 3389 static struct device_attribute ipr_ioa_state_attr = { 3390 .attr = { 3391 .name = "online_state", 3392 .mode = S_IRUGO | S_IWUSR, 3393 }, 3394 .show = ipr_show_adapter_state, 3395 .store = ipr_store_adapter_state 3396 }; 3397 3398 /** 3399 * ipr_store_reset_adapter - Reset the adapter 3400 * @dev: device struct 3401 * @buf: buffer 3402 * @count: buffer size 3403 * 3404 * This function will reset the adapter. 3405 * 3406 * Return value: 3407 * count on success / other on failure 3408 **/ 3409 static ssize_t ipr_store_reset_adapter(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; 3416 int result = count; 3417 3418 if (!capable(CAP_SYS_ADMIN)) 3419 return -EACCES; 3420 3421 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3422 if (!ioa_cfg->in_reset_reload) 3423 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3424 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3425 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3426 3427 return result; 3428 } 3429 3430 static struct device_attribute ipr_ioa_reset_attr = { 3431 .attr = { 3432 .name = "reset_host", 3433 .mode = S_IWUSR, 3434 }, 3435 .store = ipr_store_reset_adapter 3436 }; 3437 3438 /** 3439 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 3440 * @buf_len: buffer length 3441 * 3442 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 3443 * list to use for microcode download 3444 * 3445 * Return value: 3446 * pointer to sglist / NULL on failure 3447 **/ 3448 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 3449 { 3450 int sg_size, order, bsize_elem, num_elem, i, j; 3451 struct ipr_sglist *sglist; 3452 struct scatterlist *scatterlist; 3453 struct page *page; 3454 3455 /* Get the minimum size per scatter/gather element */ 3456 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 3457 3458 /* Get the actual size per element */ 3459 order = get_order(sg_size); 3460 3461 /* Determine the actual number of bytes per element */ 3462 bsize_elem = PAGE_SIZE * (1 << order); 3463 3464 /* Determine the actual number of sg entries needed */ 3465 if (buf_len % bsize_elem) 3466 num_elem = (buf_len / bsize_elem) + 1; 3467 else 3468 num_elem = buf_len / bsize_elem; 3469 3470 /* Allocate a scatter/gather list for the DMA */ 3471 sglist = kzalloc(sizeof(struct ipr_sglist) + 3472 (sizeof(struct scatterlist) * (num_elem - 1)), 3473 GFP_KERNEL); 3474 3475 if (sglist == NULL) { 3476 ipr_trace; 3477 return NULL; 3478 } 3479 3480 scatterlist = sglist->scatterlist; 3481 sg_init_table(scatterlist, num_elem); 3482 3483 sglist->order = order; 3484 sglist->num_sg = num_elem; 3485 3486 /* Allocate a bunch of sg elements */ 3487 for (i = 0; i < num_elem; i++) { 3488 page = alloc_pages(GFP_KERNEL, order); 3489 if (!page) { 3490 ipr_trace; 3491 3492 /* Free up what we already allocated */ 3493 for (j = i - 1; j >= 0; j--) 3494 __free_pages(sg_page(&scatterlist[j]), order); 3495 kfree(sglist); 3496 return NULL; 3497 } 3498 3499 sg_set_page(&scatterlist[i], page, 0, 0); 3500 } 3501 3502 return sglist; 3503 } 3504 3505 /** 3506 * ipr_free_ucode_buffer - Frees a microcode download buffer 3507 * @p_dnld: scatter/gather list pointer 3508 * 3509 * Free a DMA'able ucode download buffer previously allocated with 3510 * ipr_alloc_ucode_buffer 3511 * 3512 * Return value: 3513 * nothing 3514 **/ 3515 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 3516 { 3517 int i; 3518 3519 for (i = 0; i < sglist->num_sg; i++) 3520 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order); 3521 3522 kfree(sglist); 3523 } 3524 3525 /** 3526 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 3527 * @sglist: scatter/gather list pointer 3528 * @buffer: buffer pointer 3529 * @len: buffer length 3530 * 3531 * Copy a microcode image from a user buffer into a buffer allocated by 3532 * ipr_alloc_ucode_buffer 3533 * 3534 * Return value: 3535 * 0 on success / other on failure 3536 **/ 3537 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 3538 u8 *buffer, u32 len) 3539 { 3540 int bsize_elem, i, result = 0; 3541 struct scatterlist *scatterlist; 3542 void *kaddr; 3543 3544 /* Determine the actual number of bytes per element */ 3545 bsize_elem = PAGE_SIZE * (1 << sglist->order); 3546 3547 scatterlist = sglist->scatterlist; 3548 3549 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { 3550 struct page *page = sg_page(&scatterlist[i]); 3551 3552 kaddr = kmap(page); 3553 memcpy(kaddr, buffer, bsize_elem); 3554 kunmap(page); 3555 3556 scatterlist[i].length = bsize_elem; 3557 3558 if (result != 0) { 3559 ipr_trace; 3560 return result; 3561 } 3562 } 3563 3564 if (len % bsize_elem) { 3565 struct page *page = sg_page(&scatterlist[i]); 3566 3567 kaddr = kmap(page); 3568 memcpy(kaddr, buffer, len % bsize_elem); 3569 kunmap(page); 3570 3571 scatterlist[i].length = len % bsize_elem; 3572 } 3573 3574 sglist->buffer_len = len; 3575 return result; 3576 } 3577 3578 /** 3579 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL 3580 * @ipr_cmd: ipr command struct 3581 * @sglist: scatter/gather list 3582 * 3583 * Builds a microcode download IOA data list (IOADL). 3584 * 3585 **/ 3586 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd, 3587 struct ipr_sglist *sglist) 3588 { 3589 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3590 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 3591 struct scatterlist *scatterlist = sglist->scatterlist; 3592 int i; 3593 3594 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 3595 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3596 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 3597 3598 ioarcb->ioadl_len = 3599 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 3600 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3601 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE); 3602 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i])); 3603 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i])); 3604 } 3605 3606 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3607 } 3608 3609 /** 3610 * ipr_build_ucode_ioadl - Build a microcode download IOADL 3611 * @ipr_cmd: ipr command struct 3612 * @sglist: scatter/gather list 3613 * 3614 * Builds a microcode download IOA data list (IOADL). 3615 * 3616 **/ 3617 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, 3618 struct ipr_sglist *sglist) 3619 { 3620 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3621 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 3622 struct scatterlist *scatterlist = sglist->scatterlist; 3623 int i; 3624 3625 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 3626 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3627 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 3628 3629 ioarcb->ioadl_len = 3630 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 3631 3632 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3633 ioadl[i].flags_and_data_len = 3634 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); 3635 ioadl[i].address = 3636 cpu_to_be32(sg_dma_address(&scatterlist[i])); 3637 } 3638 3639 ioadl[i-1].flags_and_data_len |= 3640 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3641 } 3642 3643 /** 3644 * ipr_update_ioa_ucode - Update IOA's microcode 3645 * @ioa_cfg: ioa config struct 3646 * @sglist: scatter/gather list 3647 * 3648 * Initiate an adapter reset to update the IOA's microcode 3649 * 3650 * Return value: 3651 * 0 on success / -EIO on failure 3652 **/ 3653 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, 3654 struct ipr_sglist *sglist) 3655 { 3656 unsigned long lock_flags; 3657 3658 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3659 while(ioa_cfg->in_reset_reload) { 3660 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3661 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3662 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3663 } 3664 3665 if (ioa_cfg->ucode_sglist) { 3666 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3667 dev_err(&ioa_cfg->pdev->dev, 3668 "Microcode download already in progress\n"); 3669 return -EIO; 3670 } 3671 3672 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist, 3673 sglist->num_sg, DMA_TO_DEVICE); 3674 3675 if (!sglist->num_dma_sg) { 3676 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3677 dev_err(&ioa_cfg->pdev->dev, 3678 "Failed to map microcode download buffer!\n"); 3679 return -EIO; 3680 } 3681 3682 ioa_cfg->ucode_sglist = sglist; 3683 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3684 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3685 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3686 3687 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3688 ioa_cfg->ucode_sglist = NULL; 3689 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3690 return 0; 3691 } 3692 3693 /** 3694 * ipr_store_update_fw - Update the firmware on the adapter 3695 * @class_dev: device struct 3696 * @buf: buffer 3697 * @count: buffer size 3698 * 3699 * This function will update the firmware on the adapter. 3700 * 3701 * Return value: 3702 * count on success / other on failure 3703 **/ 3704 static ssize_t ipr_store_update_fw(struct device *dev, 3705 struct device_attribute *attr, 3706 const char *buf, size_t count) 3707 { 3708 struct Scsi_Host *shost = class_to_shost(dev); 3709 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3710 struct ipr_ucode_image_header *image_hdr; 3711 const struct firmware *fw_entry; 3712 struct ipr_sglist *sglist; 3713 char fname[100]; 3714 char *src; 3715 int len, result, dnld_size; 3716 3717 if (!capable(CAP_SYS_ADMIN)) 3718 return -EACCES; 3719 3720 len = snprintf(fname, 99, "%s", buf); 3721 fname[len-1] = '\0'; 3722 3723 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 3724 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 3725 return -EIO; 3726 } 3727 3728 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 3729 3730 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size || 3731 (ioa_cfg->vpd_cbs->page3_data.card_type && 3732 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) { 3733 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n"); 3734 release_firmware(fw_entry); 3735 return -EINVAL; 3736 } 3737 3738 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 3739 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 3740 sglist = ipr_alloc_ucode_buffer(dnld_size); 3741 3742 if (!sglist) { 3743 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 3744 release_firmware(fw_entry); 3745 return -ENOMEM; 3746 } 3747 3748 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 3749 3750 if (result) { 3751 dev_err(&ioa_cfg->pdev->dev, 3752 "Microcode buffer copy to DMA buffer failed\n"); 3753 goto out; 3754 } 3755 3756 result = ipr_update_ioa_ucode(ioa_cfg, sglist); 3757 3758 if (!result) 3759 result = count; 3760 out: 3761 ipr_free_ucode_buffer(sglist); 3762 release_firmware(fw_entry); 3763 return result; 3764 } 3765 3766 static struct device_attribute ipr_update_fw_attr = { 3767 .attr = { 3768 .name = "update_fw", 3769 .mode = S_IWUSR, 3770 }, 3771 .store = ipr_store_update_fw 3772 }; 3773 3774 /** 3775 * ipr_show_fw_type - Show the adapter's firmware type. 3776 * @dev: class device struct 3777 * @buf: buffer 3778 * 3779 * Return value: 3780 * number of bytes printed to buffer 3781 **/ 3782 static ssize_t ipr_show_fw_type(struct device *dev, 3783 struct device_attribute *attr, char *buf) 3784 { 3785 struct Scsi_Host *shost = class_to_shost(dev); 3786 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3787 unsigned long lock_flags = 0; 3788 int len; 3789 3790 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3791 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64); 3792 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3793 return len; 3794 } 3795 3796 static struct device_attribute ipr_ioa_fw_type_attr = { 3797 .attr = { 3798 .name = "fw_type", 3799 .mode = S_IRUGO, 3800 }, 3801 .show = ipr_show_fw_type 3802 }; 3803 3804 static struct device_attribute *ipr_ioa_attrs[] = { 3805 &ipr_fw_version_attr, 3806 &ipr_log_level_attr, 3807 &ipr_diagnostics_attr, 3808 &ipr_ioa_state_attr, 3809 &ipr_ioa_reset_attr, 3810 &ipr_update_fw_attr, 3811 &ipr_ioa_fw_type_attr, 3812 NULL, 3813 }; 3814 3815 #ifdef CONFIG_SCSI_IPR_DUMP 3816 /** 3817 * ipr_read_dump - Dump the adapter 3818 * @filp: open sysfs file 3819 * @kobj: kobject struct 3820 * @bin_attr: bin_attribute struct 3821 * @buf: buffer 3822 * @off: offset 3823 * @count: buffer size 3824 * 3825 * Return value: 3826 * number of bytes printed to buffer 3827 **/ 3828 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj, 3829 struct bin_attribute *bin_attr, 3830 char *buf, loff_t off, size_t count) 3831 { 3832 struct device *cdev = container_of(kobj, struct device, kobj); 3833 struct Scsi_Host *shost = class_to_shost(cdev); 3834 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3835 struct ipr_dump *dump; 3836 unsigned long lock_flags = 0; 3837 char *src; 3838 int len; 3839 size_t rc = count; 3840 3841 if (!capable(CAP_SYS_ADMIN)) 3842 return -EACCES; 3843 3844 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3845 dump = ioa_cfg->dump; 3846 3847 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 3848 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3849 return 0; 3850 } 3851 kref_get(&dump->kref); 3852 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3853 3854 if (off > dump->driver_dump.hdr.len) { 3855 kref_put(&dump->kref, ipr_release_dump); 3856 return 0; 3857 } 3858 3859 if (off + count > dump->driver_dump.hdr.len) { 3860 count = dump->driver_dump.hdr.len - off; 3861 rc = count; 3862 } 3863 3864 if (count && off < sizeof(dump->driver_dump)) { 3865 if (off + count > sizeof(dump->driver_dump)) 3866 len = sizeof(dump->driver_dump) - off; 3867 else 3868 len = count; 3869 src = (u8 *)&dump->driver_dump + off; 3870 memcpy(buf, src, len); 3871 buf += len; 3872 off += len; 3873 count -= len; 3874 } 3875 3876 off -= sizeof(dump->driver_dump); 3877 3878 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) { 3879 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data)) 3880 len = offsetof(struct ipr_ioa_dump, ioa_data) - off; 3881 else 3882 len = count; 3883 src = (u8 *)&dump->ioa_dump + off; 3884 memcpy(buf, src, len); 3885 buf += len; 3886 off += len; 3887 count -= len; 3888 } 3889 3890 off -= offsetof(struct ipr_ioa_dump, ioa_data); 3891 3892 while (count) { 3893 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 3894 len = PAGE_ALIGN(off) - off; 3895 else 3896 len = count; 3897 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 3898 src += off & ~PAGE_MASK; 3899 memcpy(buf, src, len); 3900 buf += len; 3901 off += len; 3902 count -= len; 3903 } 3904 3905 kref_put(&dump->kref, ipr_release_dump); 3906 return rc; 3907 } 3908 3909 /** 3910 * ipr_alloc_dump - Prepare for adapter dump 3911 * @ioa_cfg: ioa config struct 3912 * 3913 * Return value: 3914 * 0 on success / other on failure 3915 **/ 3916 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 3917 { 3918 struct ipr_dump *dump; 3919 unsigned long lock_flags = 0; 3920 3921 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); 3922 3923 if (!dump) { 3924 ipr_err("Dump memory allocation failed\n"); 3925 return -ENOMEM; 3926 } 3927 3928 kref_init(&dump->kref); 3929 dump->ioa_cfg = ioa_cfg; 3930 3931 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3932 3933 if (INACTIVE != ioa_cfg->sdt_state) { 3934 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3935 kfree(dump); 3936 return 0; 3937 } 3938 3939 ioa_cfg->dump = dump; 3940 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 3941 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) { 3942 ioa_cfg->dump_taken = 1; 3943 schedule_work(&ioa_cfg->work_q); 3944 } 3945 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3946 3947 return 0; 3948 } 3949 3950 /** 3951 * ipr_free_dump - Free adapter dump memory 3952 * @ioa_cfg: ioa config struct 3953 * 3954 * Return value: 3955 * 0 on success / other on failure 3956 **/ 3957 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 3958 { 3959 struct ipr_dump *dump; 3960 unsigned long lock_flags = 0; 3961 3962 ENTER; 3963 3964 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3965 dump = ioa_cfg->dump; 3966 if (!dump) { 3967 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3968 return 0; 3969 } 3970 3971 ioa_cfg->dump = NULL; 3972 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3973 3974 kref_put(&dump->kref, ipr_release_dump); 3975 3976 LEAVE; 3977 return 0; 3978 } 3979 3980 /** 3981 * ipr_write_dump - Setup dump state of adapter 3982 * @filp: open sysfs file 3983 * @kobj: kobject struct 3984 * @bin_attr: bin_attribute struct 3985 * @buf: buffer 3986 * @off: offset 3987 * @count: buffer size 3988 * 3989 * Return value: 3990 * number of bytes printed to buffer 3991 **/ 3992 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj, 3993 struct bin_attribute *bin_attr, 3994 char *buf, loff_t off, size_t count) 3995 { 3996 struct device *cdev = container_of(kobj, struct device, kobj); 3997 struct Scsi_Host *shost = class_to_shost(cdev); 3998 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3999 int rc; 4000 4001 if (!capable(CAP_SYS_ADMIN)) 4002 return -EACCES; 4003 4004 if (buf[0] == '1') 4005 rc = ipr_alloc_dump(ioa_cfg); 4006 else if (buf[0] == '0') 4007 rc = ipr_free_dump(ioa_cfg); 4008 else 4009 return -EINVAL; 4010 4011 if (rc) 4012 return rc; 4013 else 4014 return count; 4015 } 4016 4017 static struct bin_attribute ipr_dump_attr = { 4018 .attr = { 4019 .name = "dump", 4020 .mode = S_IRUSR | S_IWUSR, 4021 }, 4022 .size = 0, 4023 .read = ipr_read_dump, 4024 .write = ipr_write_dump 4025 }; 4026 #else 4027 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 4028 #endif 4029 4030 /** 4031 * ipr_change_queue_depth - Change the device's queue depth 4032 * @sdev: scsi device struct 4033 * @qdepth: depth to set 4034 * @reason: calling context 4035 * 4036 * Return value: 4037 * actual depth set 4038 **/ 4039 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth, 4040 int reason) 4041 { 4042 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4043 struct ipr_resource_entry *res; 4044 unsigned long lock_flags = 0; 4045 4046 if (reason != SCSI_QDEPTH_DEFAULT) 4047 return -EOPNOTSUPP; 4048 4049 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4050 res = (struct ipr_resource_entry *)sdev->hostdata; 4051 4052 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN) 4053 qdepth = IPR_MAX_CMD_PER_ATA_LUN; 4054 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4055 4056 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); 4057 return sdev->queue_depth; 4058 } 4059 4060 /** 4061 * ipr_change_queue_type - Change the device's queue type 4062 * @dsev: scsi device struct 4063 * @tag_type: type of tags to use 4064 * 4065 * Return value: 4066 * actual queue type set 4067 **/ 4068 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type) 4069 { 4070 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4071 struct ipr_resource_entry *res; 4072 unsigned long lock_flags = 0; 4073 4074 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4075 res = (struct ipr_resource_entry *)sdev->hostdata; 4076 4077 if (res) { 4078 if (ipr_is_gscsi(res) && sdev->tagged_supported) { 4079 /* 4080 * We don't bother quiescing the device here since the 4081 * adapter firmware does it for us. 4082 */ 4083 scsi_set_tag_type(sdev, tag_type); 4084 4085 if (tag_type) 4086 scsi_activate_tcq(sdev, sdev->queue_depth); 4087 else 4088 scsi_deactivate_tcq(sdev, sdev->queue_depth); 4089 } else 4090 tag_type = 0; 4091 } else 4092 tag_type = 0; 4093 4094 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4095 return tag_type; 4096 } 4097 4098 /** 4099 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 4100 * @dev: device struct 4101 * @attr: device attribute structure 4102 * @buf: buffer 4103 * 4104 * Return value: 4105 * number of bytes printed to buffer 4106 **/ 4107 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) 4108 { 4109 struct scsi_device *sdev = to_scsi_device(dev); 4110 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4111 struct ipr_resource_entry *res; 4112 unsigned long lock_flags = 0; 4113 ssize_t len = -ENXIO; 4114 4115 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4116 res = (struct ipr_resource_entry *)sdev->hostdata; 4117 if (res) 4118 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle); 4119 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4120 return len; 4121 } 4122 4123 static struct device_attribute ipr_adapter_handle_attr = { 4124 .attr = { 4125 .name = "adapter_handle", 4126 .mode = S_IRUSR, 4127 }, 4128 .show = ipr_show_adapter_handle 4129 }; 4130 4131 /** 4132 * ipr_show_resource_path - Show the resource path or the resource address for 4133 * this device. 4134 * @dev: device struct 4135 * @attr: device attribute structure 4136 * @buf: buffer 4137 * 4138 * Return value: 4139 * number of bytes printed to buffer 4140 **/ 4141 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf) 4142 { 4143 struct scsi_device *sdev = to_scsi_device(dev); 4144 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4145 struct ipr_resource_entry *res; 4146 unsigned long lock_flags = 0; 4147 ssize_t len = -ENXIO; 4148 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4149 4150 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4151 res = (struct ipr_resource_entry *)sdev->hostdata; 4152 if (res && ioa_cfg->sis64) 4153 len = snprintf(buf, PAGE_SIZE, "%s\n", 4154 ipr_format_res_path(res->res_path, buffer, 4155 sizeof(buffer))); 4156 else if (res) 4157 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no, 4158 res->bus, res->target, res->lun); 4159 4160 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4161 return len; 4162 } 4163 4164 static struct device_attribute ipr_resource_path_attr = { 4165 .attr = { 4166 .name = "resource_path", 4167 .mode = S_IRUGO, 4168 }, 4169 .show = ipr_show_resource_path 4170 }; 4171 4172 /** 4173 * ipr_show_device_id - Show the device_id for this device. 4174 * @dev: device struct 4175 * @attr: device attribute structure 4176 * @buf: buffer 4177 * 4178 * Return value: 4179 * number of bytes printed to buffer 4180 **/ 4181 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf) 4182 { 4183 struct scsi_device *sdev = to_scsi_device(dev); 4184 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4185 struct ipr_resource_entry *res; 4186 unsigned long lock_flags = 0; 4187 ssize_t len = -ENXIO; 4188 4189 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4190 res = (struct ipr_resource_entry *)sdev->hostdata; 4191 if (res && ioa_cfg->sis64) 4192 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->dev_id); 4193 else if (res) 4194 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn); 4195 4196 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4197 return len; 4198 } 4199 4200 static struct device_attribute ipr_device_id_attr = { 4201 .attr = { 4202 .name = "device_id", 4203 .mode = S_IRUGO, 4204 }, 4205 .show = ipr_show_device_id 4206 }; 4207 4208 /** 4209 * ipr_show_resource_type - Show the resource type for this device. 4210 * @dev: device struct 4211 * @attr: device attribute structure 4212 * @buf: buffer 4213 * 4214 * Return value: 4215 * number of bytes printed to buffer 4216 **/ 4217 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf) 4218 { 4219 struct scsi_device *sdev = to_scsi_device(dev); 4220 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4221 struct ipr_resource_entry *res; 4222 unsigned long lock_flags = 0; 4223 ssize_t len = -ENXIO; 4224 4225 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4226 res = (struct ipr_resource_entry *)sdev->hostdata; 4227 4228 if (res) 4229 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type); 4230 4231 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4232 return len; 4233 } 4234 4235 static struct device_attribute ipr_resource_type_attr = { 4236 .attr = { 4237 .name = "resource_type", 4238 .mode = S_IRUGO, 4239 }, 4240 .show = ipr_show_resource_type 4241 }; 4242 4243 static struct device_attribute *ipr_dev_attrs[] = { 4244 &ipr_adapter_handle_attr, 4245 &ipr_resource_path_attr, 4246 &ipr_device_id_attr, 4247 &ipr_resource_type_attr, 4248 NULL, 4249 }; 4250 4251 /** 4252 * ipr_biosparam - Return the HSC mapping 4253 * @sdev: scsi device struct 4254 * @block_device: block device pointer 4255 * @capacity: capacity of the device 4256 * @parm: Array containing returned HSC values. 4257 * 4258 * This function generates the HSC parms that fdisk uses. 4259 * We want to make sure we return something that places partitions 4260 * on 4k boundaries for best performance with the IOA. 4261 * 4262 * Return value: 4263 * 0 on success 4264 **/ 4265 static int ipr_biosparam(struct scsi_device *sdev, 4266 struct block_device *block_device, 4267 sector_t capacity, int *parm) 4268 { 4269 int heads, sectors; 4270 sector_t cylinders; 4271 4272 heads = 128; 4273 sectors = 32; 4274 4275 cylinders = capacity; 4276 sector_div(cylinders, (128 * 32)); 4277 4278 /* return result */ 4279 parm[0] = heads; 4280 parm[1] = sectors; 4281 parm[2] = cylinders; 4282 4283 return 0; 4284 } 4285 4286 /** 4287 * ipr_find_starget - Find target based on bus/target. 4288 * @starget: scsi target struct 4289 * 4290 * Return value: 4291 * resource entry pointer if found / NULL if not found 4292 **/ 4293 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget) 4294 { 4295 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4296 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4297 struct ipr_resource_entry *res; 4298 4299 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4300 if ((res->bus == starget->channel) && 4301 (res->target == starget->id) && 4302 (res->lun == 0)) { 4303 return res; 4304 } 4305 } 4306 4307 return NULL; 4308 } 4309 4310 static struct ata_port_info sata_port_info; 4311 4312 /** 4313 * ipr_target_alloc - Prepare for commands to a SCSI target 4314 * @starget: scsi target struct 4315 * 4316 * If the device is a SATA device, this function allocates an 4317 * ATA port with libata, else it does nothing. 4318 * 4319 * Return value: 4320 * 0 on success / non-0 on failure 4321 **/ 4322 static int ipr_target_alloc(struct scsi_target *starget) 4323 { 4324 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4325 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4326 struct ipr_sata_port *sata_port; 4327 struct ata_port *ap; 4328 struct ipr_resource_entry *res; 4329 unsigned long lock_flags; 4330 4331 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4332 res = ipr_find_starget(starget); 4333 starget->hostdata = NULL; 4334 4335 if (res && ipr_is_gata(res)) { 4336 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4337 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL); 4338 if (!sata_port) 4339 return -ENOMEM; 4340 4341 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost); 4342 if (ap) { 4343 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4344 sata_port->ioa_cfg = ioa_cfg; 4345 sata_port->ap = ap; 4346 sata_port->res = res; 4347 4348 res->sata_port = sata_port; 4349 ap->private_data = sata_port; 4350 starget->hostdata = sata_port; 4351 } else { 4352 kfree(sata_port); 4353 return -ENOMEM; 4354 } 4355 } 4356 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4357 4358 return 0; 4359 } 4360 4361 /** 4362 * ipr_target_destroy - Destroy a SCSI target 4363 * @starget: scsi target struct 4364 * 4365 * If the device was a SATA device, this function frees the libata 4366 * ATA port, else it does nothing. 4367 * 4368 **/ 4369 static void ipr_target_destroy(struct scsi_target *starget) 4370 { 4371 struct ipr_sata_port *sata_port = starget->hostdata; 4372 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4373 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4374 4375 if (ioa_cfg->sis64) { 4376 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS) 4377 clear_bit(starget->id, ioa_cfg->array_ids); 4378 else if (starget->channel == IPR_VSET_VIRTUAL_BUS) 4379 clear_bit(starget->id, ioa_cfg->vset_ids); 4380 else if (starget->channel == 0) 4381 clear_bit(starget->id, ioa_cfg->target_ids); 4382 } 4383 4384 if (sata_port) { 4385 starget->hostdata = NULL; 4386 ata_sas_port_destroy(sata_port->ap); 4387 kfree(sata_port); 4388 } 4389 } 4390 4391 /** 4392 * ipr_find_sdev - Find device based on bus/target/lun. 4393 * @sdev: scsi device struct 4394 * 4395 * Return value: 4396 * resource entry pointer if found / NULL if not found 4397 **/ 4398 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev) 4399 { 4400 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4401 struct ipr_resource_entry *res; 4402 4403 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4404 if ((res->bus == sdev->channel) && 4405 (res->target == sdev->id) && 4406 (res->lun == sdev->lun)) 4407 return res; 4408 } 4409 4410 return NULL; 4411 } 4412 4413 /** 4414 * ipr_slave_destroy - Unconfigure a SCSI device 4415 * @sdev: scsi device struct 4416 * 4417 * Return value: 4418 * nothing 4419 **/ 4420 static void ipr_slave_destroy(struct scsi_device *sdev) 4421 { 4422 struct ipr_resource_entry *res; 4423 struct ipr_ioa_cfg *ioa_cfg; 4424 unsigned long lock_flags = 0; 4425 4426 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4427 4428 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4429 res = (struct ipr_resource_entry *) sdev->hostdata; 4430 if (res) { 4431 if (res->sata_port) 4432 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE; 4433 sdev->hostdata = NULL; 4434 res->sdev = NULL; 4435 res->sata_port = NULL; 4436 } 4437 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4438 } 4439 4440 /** 4441 * ipr_slave_configure - Configure a SCSI device 4442 * @sdev: scsi device struct 4443 * 4444 * This function configures the specified scsi device. 4445 * 4446 * Return value: 4447 * 0 on success 4448 **/ 4449 static int ipr_slave_configure(struct scsi_device *sdev) 4450 { 4451 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4452 struct ipr_resource_entry *res; 4453 struct ata_port *ap = NULL; 4454 unsigned long lock_flags = 0; 4455 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4456 4457 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4458 res = sdev->hostdata; 4459 if (res) { 4460 if (ipr_is_af_dasd_device(res)) 4461 sdev->type = TYPE_RAID; 4462 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { 4463 sdev->scsi_level = 4; 4464 sdev->no_uld_attach = 1; 4465 } 4466 if (ipr_is_vset_device(res)) { 4467 blk_queue_rq_timeout(sdev->request_queue, 4468 IPR_VSET_RW_TIMEOUT); 4469 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); 4470 } 4471 if (ipr_is_gata(res) && res->sata_port) 4472 ap = res->sata_port->ap; 4473 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4474 4475 if (ap) { 4476 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN); 4477 ata_sas_slave_configure(sdev, ap); 4478 } else 4479 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); 4480 if (ioa_cfg->sis64) 4481 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n", 4482 ipr_format_res_path(res->res_path, buffer, 4483 sizeof(buffer))); 4484 return 0; 4485 } 4486 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4487 return 0; 4488 } 4489 4490 /** 4491 * ipr_ata_slave_alloc - Prepare for commands to a SATA device 4492 * @sdev: scsi device struct 4493 * 4494 * This function initializes an ATA port so that future commands 4495 * sent through queuecommand will work. 4496 * 4497 * Return value: 4498 * 0 on success 4499 **/ 4500 static int ipr_ata_slave_alloc(struct scsi_device *sdev) 4501 { 4502 struct ipr_sata_port *sata_port = NULL; 4503 int rc = -ENXIO; 4504 4505 ENTER; 4506 if (sdev->sdev_target) 4507 sata_port = sdev->sdev_target->hostdata; 4508 if (sata_port) 4509 rc = ata_sas_port_init(sata_port->ap); 4510 if (rc) 4511 ipr_slave_destroy(sdev); 4512 4513 LEAVE; 4514 return rc; 4515 } 4516 4517 /** 4518 * ipr_slave_alloc - Prepare for commands to a device. 4519 * @sdev: scsi device struct 4520 * 4521 * This function saves a pointer to the resource entry 4522 * in the scsi device struct if the device exists. We 4523 * can then use this pointer in ipr_queuecommand when 4524 * handling new commands. 4525 * 4526 * Return value: 4527 * 0 on success / -ENXIO if device does not exist 4528 **/ 4529 static int ipr_slave_alloc(struct scsi_device *sdev) 4530 { 4531 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4532 struct ipr_resource_entry *res; 4533 unsigned long lock_flags; 4534 int rc = -ENXIO; 4535 4536 sdev->hostdata = NULL; 4537 4538 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4539 4540 res = ipr_find_sdev(sdev); 4541 if (res) { 4542 res->sdev = sdev; 4543 res->add_to_ml = 0; 4544 res->in_erp = 0; 4545 sdev->hostdata = res; 4546 if (!ipr_is_naca_model(res)) 4547 res->needs_sync_complete = 1; 4548 rc = 0; 4549 if (ipr_is_gata(res)) { 4550 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4551 return ipr_ata_slave_alloc(sdev); 4552 } 4553 } 4554 4555 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4556 4557 return rc; 4558 } 4559 4560 /** 4561 * ipr_eh_host_reset - Reset the host adapter 4562 * @scsi_cmd: scsi command struct 4563 * 4564 * Return value: 4565 * SUCCESS / FAILED 4566 **/ 4567 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd) 4568 { 4569 struct ipr_ioa_cfg *ioa_cfg; 4570 int rc; 4571 4572 ENTER; 4573 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 4574 4575 dev_err(&ioa_cfg->pdev->dev, 4576 "Adapter being reset as a result of error recovery.\n"); 4577 4578 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4579 ioa_cfg->sdt_state = GET_DUMP; 4580 4581 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV); 4582 4583 LEAVE; 4584 return rc; 4585 } 4586 4587 static int ipr_eh_host_reset(struct scsi_cmnd * cmd) 4588 { 4589 int rc; 4590 4591 spin_lock_irq(cmd->device->host->host_lock); 4592 rc = __ipr_eh_host_reset(cmd); 4593 spin_unlock_irq(cmd->device->host->host_lock); 4594 4595 return rc; 4596 } 4597 4598 /** 4599 * ipr_device_reset - Reset the device 4600 * @ioa_cfg: ioa config struct 4601 * @res: resource entry struct 4602 * 4603 * This function issues a device reset to the affected device. 4604 * If the device is a SCSI device, a LUN reset will be sent 4605 * to the device first. If that does not work, a target reset 4606 * will be sent. If the device is a SATA device, a PHY reset will 4607 * be sent. 4608 * 4609 * Return value: 4610 * 0 on success / non-zero on failure 4611 **/ 4612 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, 4613 struct ipr_resource_entry *res) 4614 { 4615 struct ipr_cmnd *ipr_cmd; 4616 struct ipr_ioarcb *ioarcb; 4617 struct ipr_cmd_pkt *cmd_pkt; 4618 struct ipr_ioarcb_ata_regs *regs; 4619 u32 ioasc; 4620 4621 ENTER; 4622 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4623 ioarcb = &ipr_cmd->ioarcb; 4624 cmd_pkt = &ioarcb->cmd_pkt; 4625 4626 if (ipr_cmd->ioa_cfg->sis64) { 4627 regs = &ipr_cmd->i.ata_ioadl.regs; 4628 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb)); 4629 } else 4630 regs = &ioarcb->u.add_data.u.regs; 4631 4632 ioarcb->res_handle = res->res_handle; 4633 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4634 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 4635 if (ipr_is_gata(res)) { 4636 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET; 4637 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags)); 4638 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 4639 } 4640 4641 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 4642 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 4643 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4644 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) { 4645 if (ipr_cmd->ioa_cfg->sis64) 4646 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata, 4647 sizeof(struct ipr_ioasa_gata)); 4648 else 4649 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata, 4650 sizeof(struct ipr_ioasa_gata)); 4651 } 4652 4653 LEAVE; 4654 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0); 4655 } 4656 4657 /** 4658 * ipr_sata_reset - Reset the SATA port 4659 * @link: SATA link to reset 4660 * @classes: class of the attached device 4661 * 4662 * This function issues a SATA phy reset to the affected ATA link. 4663 * 4664 * Return value: 4665 * 0 on success / non-zero on failure 4666 **/ 4667 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes, 4668 unsigned long deadline) 4669 { 4670 struct ipr_sata_port *sata_port = link->ap->private_data; 4671 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 4672 struct ipr_resource_entry *res; 4673 unsigned long lock_flags = 0; 4674 int rc = -ENXIO; 4675 4676 ENTER; 4677 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4678 while(ioa_cfg->in_reset_reload) { 4679 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4680 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4681 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4682 } 4683 4684 res = sata_port->res; 4685 if (res) { 4686 rc = ipr_device_reset(ioa_cfg, res); 4687 *classes = res->ata_class; 4688 } 4689 4690 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4691 LEAVE; 4692 return rc; 4693 } 4694 4695 /** 4696 * ipr_eh_dev_reset - Reset the device 4697 * @scsi_cmd: scsi command struct 4698 * 4699 * This function issues a device reset to the affected device. 4700 * A LUN reset will be sent to the device first. If that does 4701 * not work, a target reset will be sent. 4702 * 4703 * Return value: 4704 * SUCCESS / FAILED 4705 **/ 4706 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) 4707 { 4708 struct ipr_cmnd *ipr_cmd; 4709 struct ipr_ioa_cfg *ioa_cfg; 4710 struct ipr_resource_entry *res; 4711 struct ata_port *ap; 4712 int rc = 0; 4713 4714 ENTER; 4715 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 4716 res = scsi_cmd->device->hostdata; 4717 4718 if (!res) 4719 return FAILED; 4720 4721 /* 4722 * If we are currently going through reset/reload, return failed. This will force the 4723 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 4724 * reset to complete 4725 */ 4726 if (ioa_cfg->in_reset_reload) 4727 return FAILED; 4728 if (ioa_cfg->ioa_is_dead) 4729 return FAILED; 4730 4731 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4732 if (ipr_cmd->ioarcb.res_handle == res->res_handle) { 4733 if (ipr_cmd->scsi_cmd) 4734 ipr_cmd->done = ipr_scsi_eh_done; 4735 if (ipr_cmd->qc) 4736 ipr_cmd->done = ipr_sata_eh_done; 4737 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) { 4738 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT; 4739 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED; 4740 } 4741 } 4742 } 4743 4744 res->resetting_device = 1; 4745 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); 4746 4747 if (ipr_is_gata(res) && res->sata_port) { 4748 ap = res->sata_port->ap; 4749 spin_unlock_irq(scsi_cmd->device->host->host_lock); 4750 ata_std_error_handler(ap); 4751 spin_lock_irq(scsi_cmd->device->host->host_lock); 4752 4753 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4754 if (ipr_cmd->ioarcb.res_handle == res->res_handle) { 4755 rc = -EIO; 4756 break; 4757 } 4758 } 4759 } else 4760 rc = ipr_device_reset(ioa_cfg, res); 4761 res->resetting_device = 0; 4762 4763 LEAVE; 4764 return (rc ? FAILED : SUCCESS); 4765 } 4766 4767 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd) 4768 { 4769 int rc; 4770 4771 spin_lock_irq(cmd->device->host->host_lock); 4772 rc = __ipr_eh_dev_reset(cmd); 4773 spin_unlock_irq(cmd->device->host->host_lock); 4774 4775 return rc; 4776 } 4777 4778 /** 4779 * ipr_bus_reset_done - Op done function for bus reset. 4780 * @ipr_cmd: ipr command struct 4781 * 4782 * This function is the op done function for a bus reset 4783 * 4784 * Return value: 4785 * none 4786 **/ 4787 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 4788 { 4789 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4790 struct ipr_resource_entry *res; 4791 4792 ENTER; 4793 if (!ioa_cfg->sis64) 4794 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4795 if (res->res_handle == ipr_cmd->ioarcb.res_handle) { 4796 scsi_report_bus_reset(ioa_cfg->host, res->bus); 4797 break; 4798 } 4799 } 4800 4801 /* 4802 * If abort has not completed, indicate the reset has, else call the 4803 * abort's done function to wake the sleeping eh thread 4804 */ 4805 if (ipr_cmd->sibling->sibling) 4806 ipr_cmd->sibling->sibling = NULL; 4807 else 4808 ipr_cmd->sibling->done(ipr_cmd->sibling); 4809 4810 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4811 LEAVE; 4812 } 4813 4814 /** 4815 * ipr_abort_timeout - An abort task has timed out 4816 * @ipr_cmd: ipr command struct 4817 * 4818 * This function handles when an abort task times out. If this 4819 * happens we issue a bus reset since we have resources tied 4820 * up that must be freed before returning to the midlayer. 4821 * 4822 * Return value: 4823 * none 4824 **/ 4825 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 4826 { 4827 struct ipr_cmnd *reset_cmd; 4828 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4829 struct ipr_cmd_pkt *cmd_pkt; 4830 unsigned long lock_flags = 0; 4831 4832 ENTER; 4833 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4834 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 4835 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4836 return; 4837 } 4838 4839 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n"); 4840 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4841 ipr_cmd->sibling = reset_cmd; 4842 reset_cmd->sibling = ipr_cmd; 4843 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 4844 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 4845 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4846 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 4847 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 4848 4849 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 4850 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4851 LEAVE; 4852 } 4853 4854 /** 4855 * ipr_cancel_op - Cancel specified op 4856 * @scsi_cmd: scsi command struct 4857 * 4858 * This function cancels specified op. 4859 * 4860 * Return value: 4861 * SUCCESS / FAILED 4862 **/ 4863 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) 4864 { 4865 struct ipr_cmnd *ipr_cmd; 4866 struct ipr_ioa_cfg *ioa_cfg; 4867 struct ipr_resource_entry *res; 4868 struct ipr_cmd_pkt *cmd_pkt; 4869 u32 ioasc; 4870 int op_found = 0; 4871 4872 ENTER; 4873 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 4874 res = scsi_cmd->device->hostdata; 4875 4876 /* If we are currently going through reset/reload, return failed. 4877 * This will force the mid-layer to call ipr_eh_host_reset, 4878 * which will then go to sleep and wait for the reset to complete 4879 */ 4880 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) 4881 return FAILED; 4882 if (!res || !ipr_is_gscsi(res)) 4883 return FAILED; 4884 4885 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4886 if (ipr_cmd->scsi_cmd == scsi_cmd) { 4887 ipr_cmd->done = ipr_scsi_eh_done; 4888 op_found = 1; 4889 break; 4890 } 4891 } 4892 4893 if (!op_found) 4894 return SUCCESS; 4895 4896 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4897 ipr_cmd->ioarcb.res_handle = res->res_handle; 4898 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4899 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4900 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4901 ipr_cmd->u.sdev = scsi_cmd->device; 4902 4903 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n", 4904 scsi_cmd->cmnd[0]); 4905 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 4906 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 4907 4908 /* 4909 * If the abort task timed out and we sent a bus reset, we will get 4910 * one the following responses to the abort 4911 */ 4912 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 4913 ioasc = 0; 4914 ipr_trace; 4915 } 4916 4917 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4918 if (!ipr_is_naca_model(res)) 4919 res->needs_sync_complete = 1; 4920 4921 LEAVE; 4922 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); 4923 } 4924 4925 /** 4926 * ipr_eh_abort - Abort a single op 4927 * @scsi_cmd: scsi command struct 4928 * 4929 * Return value: 4930 * SUCCESS / FAILED 4931 **/ 4932 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) 4933 { 4934 unsigned long flags; 4935 int rc; 4936 4937 ENTER; 4938 4939 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 4940 rc = ipr_cancel_op(scsi_cmd); 4941 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 4942 4943 LEAVE; 4944 return rc; 4945 } 4946 4947 /** 4948 * ipr_handle_other_interrupt - Handle "other" interrupts 4949 * @ioa_cfg: ioa config struct 4950 * @int_reg: interrupt register 4951 * 4952 * Return value: 4953 * IRQ_NONE / IRQ_HANDLED 4954 **/ 4955 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 4956 volatile u32 int_reg) 4957 { 4958 irqreturn_t rc = IRQ_HANDLED; 4959 4960 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 4961 /* Mask the interrupt */ 4962 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 4963 4964 /* Clear the interrupt */ 4965 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); 4966 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 4967 4968 list_del(&ioa_cfg->reset_cmd->queue); 4969 del_timer(&ioa_cfg->reset_cmd->timer); 4970 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 4971 } else { 4972 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 4973 ioa_cfg->ioa_unit_checked = 1; 4974 else 4975 dev_err(&ioa_cfg->pdev->dev, 4976 "Permanent IOA failure. 0x%08X\n", int_reg); 4977 4978 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4979 ioa_cfg->sdt_state = GET_DUMP; 4980 4981 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 4982 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4983 } 4984 4985 return rc; 4986 } 4987 4988 /** 4989 * ipr_isr_eh - Interrupt service routine error handler 4990 * @ioa_cfg: ioa config struct 4991 * @msg: message to log 4992 * 4993 * Return value: 4994 * none 4995 **/ 4996 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg) 4997 { 4998 ioa_cfg->errors_logged++; 4999 dev_err(&ioa_cfg->pdev->dev, "%s\n", msg); 5000 5001 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 5002 ioa_cfg->sdt_state = GET_DUMP; 5003 5004 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5005 } 5006 5007 /** 5008 * ipr_isr - Interrupt service routine 5009 * @irq: irq number 5010 * @devp: pointer to ioa config struct 5011 * 5012 * Return value: 5013 * IRQ_NONE / IRQ_HANDLED 5014 **/ 5015 static irqreturn_t ipr_isr(int irq, void *devp) 5016 { 5017 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 5018 unsigned long lock_flags = 0; 5019 volatile u32 int_reg, int_mask_reg; 5020 u32 ioasc; 5021 u16 cmd_index; 5022 int num_hrrq = 0; 5023 struct ipr_cmnd *ipr_cmd; 5024 irqreturn_t rc = IRQ_NONE; 5025 5026 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5027 5028 /* If interrupts are disabled, ignore the interrupt */ 5029 if (!ioa_cfg->allow_interrupts) { 5030 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5031 return IRQ_NONE; 5032 } 5033 5034 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 5035 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32) & ~int_mask_reg; 5036 5037 /* If an interrupt on the adapter did not occur, ignore it. 5038 * Or in the case of SIS 64, check for a stage change interrupt. 5039 */ 5040 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) { 5041 if (ioa_cfg->sis64) { 5042 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 5043 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 5044 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) { 5045 5046 /* clear stage change */ 5047 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg); 5048 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 5049 list_del(&ioa_cfg->reset_cmd->queue); 5050 del_timer(&ioa_cfg->reset_cmd->timer); 5051 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 5052 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5053 return IRQ_HANDLED; 5054 } 5055 } 5056 5057 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5058 return IRQ_NONE; 5059 } 5060 5061 while (1) { 5062 ipr_cmd = NULL; 5063 5064 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5065 ioa_cfg->toggle_bit) { 5066 5067 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & 5068 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 5069 5070 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { 5071 ipr_isr_eh(ioa_cfg, "Invalid response handle from IOA"); 5072 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5073 return IRQ_HANDLED; 5074 } 5075 5076 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 5077 5078 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5079 5080 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 5081 5082 list_del(&ipr_cmd->queue); 5083 del_timer(&ipr_cmd->timer); 5084 ipr_cmd->done(ipr_cmd); 5085 5086 rc = IRQ_HANDLED; 5087 5088 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { 5089 ioa_cfg->hrrq_curr++; 5090 } else { 5091 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 5092 ioa_cfg->toggle_bit ^= 1u; 5093 } 5094 } 5095 5096 if (ipr_cmd != NULL) { 5097 /* Clear the PCI interrupt */ 5098 do { 5099 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32); 5100 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32) & ~int_mask_reg; 5101 } while (int_reg & IPR_PCII_HRRQ_UPDATED && 5102 num_hrrq++ < IPR_MAX_HRRQ_RETRIES); 5103 5104 if (int_reg & IPR_PCII_HRRQ_UPDATED) { 5105 ipr_isr_eh(ioa_cfg, "Error clearing HRRQ"); 5106 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5107 return IRQ_HANDLED; 5108 } 5109 5110 } else 5111 break; 5112 } 5113 5114 if (unlikely(rc == IRQ_NONE)) 5115 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 5116 5117 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5118 return rc; 5119 } 5120 5121 /** 5122 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer 5123 * @ioa_cfg: ioa config struct 5124 * @ipr_cmd: ipr command struct 5125 * 5126 * Return value: 5127 * 0 on success / -1 on failure 5128 **/ 5129 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg, 5130 struct ipr_cmnd *ipr_cmd) 5131 { 5132 int i, nseg; 5133 struct scatterlist *sg; 5134 u32 length; 5135 u32 ioadl_flags = 0; 5136 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5137 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5138 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 5139 5140 length = scsi_bufflen(scsi_cmd); 5141 if (!length) 5142 return 0; 5143 5144 nseg = scsi_dma_map(scsi_cmd); 5145 if (nseg < 0) { 5146 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 5147 return -1; 5148 } 5149 5150 ipr_cmd->dma_use_sg = nseg; 5151 5152 ioarcb->data_transfer_length = cpu_to_be32(length); 5153 ioarcb->ioadl_len = 5154 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 5155 5156 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 5157 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5158 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5159 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) 5160 ioadl_flags = IPR_IOADL_FLAGS_READ; 5161 5162 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 5163 ioadl64[i].flags = cpu_to_be32(ioadl_flags); 5164 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg)); 5165 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg)); 5166 } 5167 5168 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5169 return 0; 5170 } 5171 5172 /** 5173 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 5174 * @ioa_cfg: ioa config struct 5175 * @ipr_cmd: ipr command struct 5176 * 5177 * Return value: 5178 * 0 on success / -1 on failure 5179 **/ 5180 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 5181 struct ipr_cmnd *ipr_cmd) 5182 { 5183 int i, nseg; 5184 struct scatterlist *sg; 5185 u32 length; 5186 u32 ioadl_flags = 0; 5187 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5188 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5189 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 5190 5191 length = scsi_bufflen(scsi_cmd); 5192 if (!length) 5193 return 0; 5194 5195 nseg = scsi_dma_map(scsi_cmd); 5196 if (nseg < 0) { 5197 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 5198 return -1; 5199 } 5200 5201 ipr_cmd->dma_use_sg = nseg; 5202 5203 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 5204 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5205 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5206 ioarcb->data_transfer_length = cpu_to_be32(length); 5207 ioarcb->ioadl_len = 5208 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5209 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 5210 ioadl_flags = IPR_IOADL_FLAGS_READ; 5211 ioarcb->read_data_transfer_length = cpu_to_be32(length); 5212 ioarcb->read_ioadl_len = 5213 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5214 } 5215 5216 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) { 5217 ioadl = ioarcb->u.add_data.u.ioadl; 5218 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) + 5219 offsetof(struct ipr_ioarcb, u.add_data)); 5220 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 5221 } 5222 5223 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 5224 ioadl[i].flags_and_data_len = 5225 cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 5226 ioadl[i].address = cpu_to_be32(sg_dma_address(sg)); 5227 } 5228 5229 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5230 return 0; 5231 } 5232 5233 /** 5234 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes 5235 * @scsi_cmd: scsi command struct 5236 * 5237 * Return value: 5238 * task attributes 5239 **/ 5240 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) 5241 { 5242 u8 tag[2]; 5243 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; 5244 5245 if (scsi_populate_tag_msg(scsi_cmd, tag)) { 5246 switch (tag[0]) { 5247 case MSG_SIMPLE_TAG: 5248 rc = IPR_FLAGS_LO_SIMPLE_TASK; 5249 break; 5250 case MSG_HEAD_TAG: 5251 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; 5252 break; 5253 case MSG_ORDERED_TAG: 5254 rc = IPR_FLAGS_LO_ORDERED_TASK; 5255 break; 5256 }; 5257 } 5258 5259 return rc; 5260 } 5261 5262 /** 5263 * ipr_erp_done - Process completion of ERP for a device 5264 * @ipr_cmd: ipr command struct 5265 * 5266 * This function copies the sense buffer into the scsi_cmd 5267 * struct and pushes the scsi_done function. 5268 * 5269 * Return value: 5270 * nothing 5271 **/ 5272 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 5273 { 5274 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5275 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 5276 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5277 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5278 5279 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 5280 scsi_cmd->result |= (DID_ERROR << 16); 5281 scmd_printk(KERN_ERR, scsi_cmd, 5282 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 5283 } else { 5284 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 5285 SCSI_SENSE_BUFFERSIZE); 5286 } 5287 5288 if (res) { 5289 if (!ipr_is_naca_model(res)) 5290 res->needs_sync_complete = 1; 5291 res->in_erp = 0; 5292 } 5293 scsi_dma_unmap(ipr_cmd->scsi_cmd); 5294 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5295 scsi_cmd->scsi_done(scsi_cmd); 5296 } 5297 5298 /** 5299 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 5300 * @ipr_cmd: ipr command struct 5301 * 5302 * Return value: 5303 * none 5304 **/ 5305 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 5306 { 5307 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5308 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5309 dma_addr_t dma_addr = ipr_cmd->dma_addr; 5310 5311 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 5312 ioarcb->data_transfer_length = 0; 5313 ioarcb->read_data_transfer_length = 0; 5314 ioarcb->ioadl_len = 0; 5315 ioarcb->read_ioadl_len = 0; 5316 ioasa->hdr.ioasc = 0; 5317 ioasa->hdr.residual_data_len = 0; 5318 5319 if (ipr_cmd->ioa_cfg->sis64) 5320 ioarcb->u.sis64_addr_data.data_ioadl_addr = 5321 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 5322 else { 5323 ioarcb->write_ioadl_addr = 5324 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 5325 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 5326 } 5327 } 5328 5329 /** 5330 * ipr_erp_request_sense - Send request sense to a device 5331 * @ipr_cmd: ipr command struct 5332 * 5333 * This function sends a request sense to a device as a result 5334 * of a check condition. 5335 * 5336 * Return value: 5337 * nothing 5338 **/ 5339 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 5340 { 5341 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 5342 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5343 5344 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 5345 ipr_erp_done(ipr_cmd); 5346 return; 5347 } 5348 5349 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 5350 5351 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 5352 cmd_pkt->cdb[0] = REQUEST_SENSE; 5353 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 5354 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 5355 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 5356 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 5357 5358 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma, 5359 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST); 5360 5361 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 5362 IPR_REQUEST_SENSE_TIMEOUT * 2); 5363 } 5364 5365 /** 5366 * ipr_erp_cancel_all - Send cancel all to a device 5367 * @ipr_cmd: ipr command struct 5368 * 5369 * This function sends a cancel all to a device to clear the 5370 * queue. If we are running TCQ on the device, QERR is set to 1, 5371 * which means all outstanding ops have been dropped on the floor. 5372 * Cancel all will return them to us. 5373 * 5374 * Return value: 5375 * nothing 5376 **/ 5377 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 5378 { 5379 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5380 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 5381 struct ipr_cmd_pkt *cmd_pkt; 5382 5383 res->in_erp = 1; 5384 5385 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 5386 5387 if (!scsi_get_tag_type(scsi_cmd->device)) { 5388 ipr_erp_request_sense(ipr_cmd); 5389 return; 5390 } 5391 5392 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 5393 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5394 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 5395 5396 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 5397 IPR_CANCEL_ALL_TIMEOUT); 5398 } 5399 5400 /** 5401 * ipr_dump_ioasa - Dump contents of IOASA 5402 * @ioa_cfg: ioa config struct 5403 * @ipr_cmd: ipr command struct 5404 * @res: resource entry struct 5405 * 5406 * This function is invoked by the interrupt handler when ops 5407 * fail. It will log the IOASA if appropriate. Only called 5408 * for GPDD ops. 5409 * 5410 * Return value: 5411 * none 5412 **/ 5413 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 5414 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res) 5415 { 5416 int i; 5417 u16 data_len; 5418 u32 ioasc, fd_ioasc; 5419 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5420 __be32 *ioasa_data = (__be32 *)ioasa; 5421 int error_index; 5422 5423 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK; 5424 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK; 5425 5426 if (0 == ioasc) 5427 return; 5428 5429 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 5430 return; 5431 5432 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc) 5433 error_index = ipr_get_error(fd_ioasc); 5434 else 5435 error_index = ipr_get_error(ioasc); 5436 5437 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 5438 /* Don't log an error if the IOA already logged one */ 5439 if (ioasa->hdr.ilid != 0) 5440 return; 5441 5442 if (!ipr_is_gscsi(res)) 5443 return; 5444 5445 if (ipr_error_table[error_index].log_ioasa == 0) 5446 return; 5447 } 5448 5449 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error); 5450 5451 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len); 5452 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len) 5453 data_len = sizeof(struct ipr_ioasa64); 5454 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len) 5455 data_len = sizeof(struct ipr_ioasa); 5456 5457 ipr_err("IOASA Dump:\n"); 5458 5459 for (i = 0; i < data_len / 4; i += 4) { 5460 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 5461 be32_to_cpu(ioasa_data[i]), 5462 be32_to_cpu(ioasa_data[i+1]), 5463 be32_to_cpu(ioasa_data[i+2]), 5464 be32_to_cpu(ioasa_data[i+3])); 5465 } 5466 } 5467 5468 /** 5469 * ipr_gen_sense - Generate SCSI sense data from an IOASA 5470 * @ioasa: IOASA 5471 * @sense_buf: sense data buffer 5472 * 5473 * Return value: 5474 * none 5475 **/ 5476 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 5477 { 5478 u32 failing_lba; 5479 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 5480 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 5481 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5482 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc); 5483 5484 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 5485 5486 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 5487 return; 5488 5489 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 5490 5491 if (ipr_is_vset_device(res) && 5492 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 5493 ioasa->u.vset.failing_lba_hi != 0) { 5494 sense_buf[0] = 0x72; 5495 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 5496 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 5497 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 5498 5499 sense_buf[7] = 12; 5500 sense_buf[8] = 0; 5501 sense_buf[9] = 0x0A; 5502 sense_buf[10] = 0x80; 5503 5504 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 5505 5506 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 5507 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 5508 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 5509 sense_buf[15] = failing_lba & 0x000000ff; 5510 5511 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 5512 5513 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 5514 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 5515 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 5516 sense_buf[19] = failing_lba & 0x000000ff; 5517 } else { 5518 sense_buf[0] = 0x70; 5519 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 5520 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 5521 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 5522 5523 /* Illegal request */ 5524 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 5525 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 5526 sense_buf[7] = 10; /* additional length */ 5527 5528 /* IOARCB was in error */ 5529 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 5530 sense_buf[15] = 0xC0; 5531 else /* Parameter data was invalid */ 5532 sense_buf[15] = 0x80; 5533 5534 sense_buf[16] = 5535 ((IPR_FIELD_POINTER_MASK & 5536 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff; 5537 sense_buf[17] = 5538 (IPR_FIELD_POINTER_MASK & 5539 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff; 5540 } else { 5541 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 5542 if (ipr_is_vset_device(res)) 5543 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 5544 else 5545 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 5546 5547 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 5548 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 5549 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 5550 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 5551 sense_buf[6] = failing_lba & 0x000000ff; 5552 } 5553 5554 sense_buf[7] = 6; /* additional length */ 5555 } 5556 } 5557 } 5558 5559 /** 5560 * ipr_get_autosense - Copy autosense data to sense buffer 5561 * @ipr_cmd: ipr command struct 5562 * 5563 * This function copies the autosense buffer to the buffer 5564 * in the scsi_cmd, if there is autosense available. 5565 * 5566 * Return value: 5567 * 1 if autosense was available / 0 if not 5568 **/ 5569 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) 5570 { 5571 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5572 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64; 5573 5574 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0) 5575 return 0; 5576 5577 if (ipr_cmd->ioa_cfg->sis64) 5578 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data, 5579 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len), 5580 SCSI_SENSE_BUFFERSIZE)); 5581 else 5582 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, 5583 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), 5584 SCSI_SENSE_BUFFERSIZE)); 5585 return 1; 5586 } 5587 5588 /** 5589 * ipr_erp_start - Process an error response for a SCSI op 5590 * @ioa_cfg: ioa config struct 5591 * @ipr_cmd: ipr command struct 5592 * 5593 * This function determines whether or not to initiate ERP 5594 * on the affected device. 5595 * 5596 * Return value: 5597 * nothing 5598 **/ 5599 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 5600 struct ipr_cmnd *ipr_cmd) 5601 { 5602 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5603 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 5604 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5605 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK; 5606 5607 if (!res) { 5608 ipr_scsi_eh_done(ipr_cmd); 5609 return; 5610 } 5611 5612 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS) 5613 ipr_gen_sense(ipr_cmd); 5614 5615 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 5616 5617 switch (masked_ioasc) { 5618 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 5619 if (ipr_is_naca_model(res)) 5620 scsi_cmd->result |= (DID_ABORT << 16); 5621 else 5622 scsi_cmd->result |= (DID_IMM_RETRY << 16); 5623 break; 5624 case IPR_IOASC_IR_RESOURCE_HANDLE: 5625 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: 5626 scsi_cmd->result |= (DID_NO_CONNECT << 16); 5627 break; 5628 case IPR_IOASC_HW_SEL_TIMEOUT: 5629 scsi_cmd->result |= (DID_NO_CONNECT << 16); 5630 if (!ipr_is_naca_model(res)) 5631 res->needs_sync_complete = 1; 5632 break; 5633 case IPR_IOASC_SYNC_REQUIRED: 5634 if (!res->in_erp) 5635 res->needs_sync_complete = 1; 5636 scsi_cmd->result |= (DID_IMM_RETRY << 16); 5637 break; 5638 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 5639 case IPR_IOASA_IR_DUAL_IOA_DISABLED: 5640 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 5641 break; 5642 case IPR_IOASC_BUS_WAS_RESET: 5643 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 5644 /* 5645 * Report the bus reset and ask for a retry. The device 5646 * will give CC/UA the next command. 5647 */ 5648 if (!res->resetting_device) 5649 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 5650 scsi_cmd->result |= (DID_ERROR << 16); 5651 if (!ipr_is_naca_model(res)) 5652 res->needs_sync_complete = 1; 5653 break; 5654 case IPR_IOASC_HW_DEV_BUS_STATUS: 5655 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 5656 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 5657 if (!ipr_get_autosense(ipr_cmd)) { 5658 if (!ipr_is_naca_model(res)) { 5659 ipr_erp_cancel_all(ipr_cmd); 5660 return; 5661 } 5662 } 5663 } 5664 if (!ipr_is_naca_model(res)) 5665 res->needs_sync_complete = 1; 5666 break; 5667 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 5668 break; 5669 default: 5670 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 5671 scsi_cmd->result |= (DID_ERROR << 16); 5672 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) 5673 res->needs_sync_complete = 1; 5674 break; 5675 } 5676 5677 scsi_dma_unmap(ipr_cmd->scsi_cmd); 5678 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5679 scsi_cmd->scsi_done(scsi_cmd); 5680 } 5681 5682 /** 5683 * ipr_scsi_done - mid-layer done function 5684 * @ipr_cmd: ipr command struct 5685 * 5686 * This function is invoked by the interrupt handler for 5687 * ops generated by the SCSI mid-layer 5688 * 5689 * Return value: 5690 * none 5691 **/ 5692 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 5693 { 5694 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5695 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5696 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5697 5698 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len)); 5699 5700 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 5701 scsi_dma_unmap(ipr_cmd->scsi_cmd); 5702 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5703 scsi_cmd->scsi_done(scsi_cmd); 5704 } else 5705 ipr_erp_start(ioa_cfg, ipr_cmd); 5706 } 5707 5708 /** 5709 * ipr_queuecommand - Queue a mid-layer request 5710 * @scsi_cmd: scsi command struct 5711 * @done: done function 5712 * 5713 * This function queues a request generated by the mid-layer. 5714 * 5715 * Return value: 5716 * 0 on success 5717 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 5718 * SCSI_MLQUEUE_HOST_BUSY if host is busy 5719 **/ 5720 static int ipr_queuecommand_lck(struct scsi_cmnd *scsi_cmd, 5721 void (*done) (struct scsi_cmnd *)) 5722 { 5723 struct ipr_ioa_cfg *ioa_cfg; 5724 struct ipr_resource_entry *res; 5725 struct ipr_ioarcb *ioarcb; 5726 struct ipr_cmnd *ipr_cmd; 5727 int rc = 0; 5728 5729 scsi_cmd->scsi_done = done; 5730 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 5731 res = scsi_cmd->device->hostdata; 5732 scsi_cmd->result = (DID_OK << 16); 5733 5734 /* 5735 * We are currently blocking all devices due to a host reset 5736 * We have told the host to stop giving us new requests, but 5737 * ERP ops don't count. FIXME 5738 */ 5739 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) 5740 return SCSI_MLQUEUE_HOST_BUSY; 5741 5742 /* 5743 * FIXME - Create scsi_set_host_offline interface 5744 * and the ioa_is_dead check can be removed 5745 */ 5746 if (unlikely(ioa_cfg->ioa_is_dead || !res)) { 5747 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 5748 scsi_cmd->result = (DID_NO_CONNECT << 16); 5749 scsi_cmd->scsi_done(scsi_cmd); 5750 return 0; 5751 } 5752 5753 if (ipr_is_gata(res) && res->sata_port) 5754 return ata_sas_queuecmd(scsi_cmd, res->sata_port->ap); 5755 5756 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5757 ioarcb = &ipr_cmd->ioarcb; 5758 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 5759 5760 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 5761 ipr_cmd->scsi_cmd = scsi_cmd; 5762 ioarcb->res_handle = res->res_handle; 5763 ipr_cmd->done = ipr_scsi_done; 5764 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res)); 5765 5766 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 5767 if (scsi_cmd->underflow == 0) 5768 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 5769 5770 if (res->needs_sync_complete) { 5771 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 5772 res->needs_sync_complete = 0; 5773 } 5774 5775 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 5776 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 5777 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 5778 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); 5779 } 5780 5781 if (scsi_cmd->cmnd[0] >= 0xC0 && 5782 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) 5783 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5784 5785 if (likely(rc == 0)) { 5786 if (ioa_cfg->sis64) 5787 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd); 5788 else 5789 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 5790 } 5791 5792 if (likely(rc == 0)) { 5793 mb(); 5794 ipr_send_command(ipr_cmd); 5795 } else { 5796 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5797 return SCSI_MLQUEUE_HOST_BUSY; 5798 } 5799 5800 return 0; 5801 } 5802 5803 static DEF_SCSI_QCMD(ipr_queuecommand) 5804 5805 /** 5806 * ipr_ioctl - IOCTL handler 5807 * @sdev: scsi device struct 5808 * @cmd: IOCTL cmd 5809 * @arg: IOCTL arg 5810 * 5811 * Return value: 5812 * 0 on success / other on failure 5813 **/ 5814 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) 5815 { 5816 struct ipr_resource_entry *res; 5817 5818 res = (struct ipr_resource_entry *)sdev->hostdata; 5819 if (res && ipr_is_gata(res)) { 5820 if (cmd == HDIO_GET_IDENTITY) 5821 return -ENOTTY; 5822 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg); 5823 } 5824 5825 return -EINVAL; 5826 } 5827 5828 /** 5829 * ipr_info - Get information about the card/driver 5830 * @scsi_host: scsi host struct 5831 * 5832 * Return value: 5833 * pointer to buffer with description string 5834 **/ 5835 static const char * ipr_ioa_info(struct Scsi_Host *host) 5836 { 5837 static char buffer[512]; 5838 struct ipr_ioa_cfg *ioa_cfg; 5839 unsigned long lock_flags = 0; 5840 5841 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 5842 5843 spin_lock_irqsave(host->host_lock, lock_flags); 5844 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 5845 spin_unlock_irqrestore(host->host_lock, lock_flags); 5846 5847 return buffer; 5848 } 5849 5850 static struct scsi_host_template driver_template = { 5851 .module = THIS_MODULE, 5852 .name = "IPR", 5853 .info = ipr_ioa_info, 5854 .ioctl = ipr_ioctl, 5855 .queuecommand = ipr_queuecommand, 5856 .eh_abort_handler = ipr_eh_abort, 5857 .eh_device_reset_handler = ipr_eh_dev_reset, 5858 .eh_host_reset_handler = ipr_eh_host_reset, 5859 .slave_alloc = ipr_slave_alloc, 5860 .slave_configure = ipr_slave_configure, 5861 .slave_destroy = ipr_slave_destroy, 5862 .target_alloc = ipr_target_alloc, 5863 .target_destroy = ipr_target_destroy, 5864 .change_queue_depth = ipr_change_queue_depth, 5865 .change_queue_type = ipr_change_queue_type, 5866 .bios_param = ipr_biosparam, 5867 .can_queue = IPR_MAX_COMMANDS, 5868 .this_id = -1, 5869 .sg_tablesize = IPR_MAX_SGLIST, 5870 .max_sectors = IPR_IOA_MAX_SECTORS, 5871 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 5872 .use_clustering = ENABLE_CLUSTERING, 5873 .shost_attrs = ipr_ioa_attrs, 5874 .sdev_attrs = ipr_dev_attrs, 5875 .proc_name = IPR_NAME 5876 }; 5877 5878 /** 5879 * ipr_ata_phy_reset - libata phy_reset handler 5880 * @ap: ata port to reset 5881 * 5882 **/ 5883 static void ipr_ata_phy_reset(struct ata_port *ap) 5884 { 5885 unsigned long flags; 5886 struct ipr_sata_port *sata_port = ap->private_data; 5887 struct ipr_resource_entry *res = sata_port->res; 5888 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5889 int rc; 5890 5891 ENTER; 5892 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5893 while(ioa_cfg->in_reset_reload) { 5894 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5895 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5896 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5897 } 5898 5899 if (!ioa_cfg->allow_cmds) 5900 goto out_unlock; 5901 5902 rc = ipr_device_reset(ioa_cfg, res); 5903 5904 if (rc) { 5905 ap->link.device[0].class = ATA_DEV_NONE; 5906 goto out_unlock; 5907 } 5908 5909 ap->link.device[0].class = res->ata_class; 5910 if (ap->link.device[0].class == ATA_DEV_UNKNOWN) 5911 ap->link.device[0].class = ATA_DEV_NONE; 5912 5913 out_unlock: 5914 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5915 LEAVE; 5916 } 5917 5918 /** 5919 * ipr_ata_post_internal - Cleanup after an internal command 5920 * @qc: ATA queued command 5921 * 5922 * Return value: 5923 * none 5924 **/ 5925 static void ipr_ata_post_internal(struct ata_queued_cmd *qc) 5926 { 5927 struct ipr_sata_port *sata_port = qc->ap->private_data; 5928 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5929 struct ipr_cmnd *ipr_cmd; 5930 unsigned long flags; 5931 5932 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5933 while(ioa_cfg->in_reset_reload) { 5934 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5935 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5936 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5937 } 5938 5939 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 5940 if (ipr_cmd->qc == qc) { 5941 ipr_device_reset(ioa_cfg, sata_port->res); 5942 break; 5943 } 5944 } 5945 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5946 } 5947 5948 /** 5949 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure 5950 * @regs: destination 5951 * @tf: source ATA taskfile 5952 * 5953 * Return value: 5954 * none 5955 **/ 5956 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs, 5957 struct ata_taskfile *tf) 5958 { 5959 regs->feature = tf->feature; 5960 regs->nsect = tf->nsect; 5961 regs->lbal = tf->lbal; 5962 regs->lbam = tf->lbam; 5963 regs->lbah = tf->lbah; 5964 regs->device = tf->device; 5965 regs->command = tf->command; 5966 regs->hob_feature = tf->hob_feature; 5967 regs->hob_nsect = tf->hob_nsect; 5968 regs->hob_lbal = tf->hob_lbal; 5969 regs->hob_lbam = tf->hob_lbam; 5970 regs->hob_lbah = tf->hob_lbah; 5971 regs->ctl = tf->ctl; 5972 } 5973 5974 /** 5975 * ipr_sata_done - done function for SATA commands 5976 * @ipr_cmd: ipr command struct 5977 * 5978 * This function is invoked by the interrupt handler for 5979 * ops generated by the SCSI mid-layer to SATA devices 5980 * 5981 * Return value: 5982 * none 5983 **/ 5984 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd) 5985 { 5986 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5987 struct ata_queued_cmd *qc = ipr_cmd->qc; 5988 struct ipr_sata_port *sata_port = qc->ap->private_data; 5989 struct ipr_resource_entry *res = sata_port->res; 5990 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5991 5992 if (ipr_cmd->ioa_cfg->sis64) 5993 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata, 5994 sizeof(struct ipr_ioasa_gata)); 5995 else 5996 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata, 5997 sizeof(struct ipr_ioasa_gata)); 5998 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 5999 6000 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET) 6001 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target); 6002 6003 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 6004 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status); 6005 else 6006 qc->err_mask |= ac_err_mask(sata_port->ioasa.status); 6007 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6008 ata_qc_complete(qc); 6009 } 6010 6011 /** 6012 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list 6013 * @ipr_cmd: ipr command struct 6014 * @qc: ATA queued command 6015 * 6016 **/ 6017 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd, 6018 struct ata_queued_cmd *qc) 6019 { 6020 u32 ioadl_flags = 0; 6021 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6022 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 6023 struct ipr_ioadl64_desc *last_ioadl64 = NULL; 6024 int len = qc->nbytes; 6025 struct scatterlist *sg; 6026 unsigned int si; 6027 dma_addr_t dma_addr = ipr_cmd->dma_addr; 6028 6029 if (len == 0) 6030 return; 6031 6032 if (qc->dma_dir == DMA_TO_DEVICE) { 6033 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 6034 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6035 } else if (qc->dma_dir == DMA_FROM_DEVICE) 6036 ioadl_flags = IPR_IOADL_FLAGS_READ; 6037 6038 ioarcb->data_transfer_length = cpu_to_be32(len); 6039 ioarcb->ioadl_len = 6040 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 6041 ioarcb->u.sis64_addr_data.data_ioadl_addr = 6042 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl)); 6043 6044 for_each_sg(qc->sg, sg, qc->n_elem, si) { 6045 ioadl64->flags = cpu_to_be32(ioadl_flags); 6046 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg)); 6047 ioadl64->address = cpu_to_be64(sg_dma_address(sg)); 6048 6049 last_ioadl64 = ioadl64; 6050 ioadl64++; 6051 } 6052 6053 if (likely(last_ioadl64)) 6054 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 6055 } 6056 6057 /** 6058 * ipr_build_ata_ioadl - Build an ATA scatter/gather list 6059 * @ipr_cmd: ipr command struct 6060 * @qc: ATA queued command 6061 * 6062 **/ 6063 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, 6064 struct ata_queued_cmd *qc) 6065 { 6066 u32 ioadl_flags = 0; 6067 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6068 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 6069 struct ipr_ioadl_desc *last_ioadl = NULL; 6070 int len = qc->nbytes; 6071 struct scatterlist *sg; 6072 unsigned int si; 6073 6074 if (len == 0) 6075 return; 6076 6077 if (qc->dma_dir == DMA_TO_DEVICE) { 6078 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 6079 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6080 ioarcb->data_transfer_length = cpu_to_be32(len); 6081 ioarcb->ioadl_len = 6082 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 6083 } else if (qc->dma_dir == DMA_FROM_DEVICE) { 6084 ioadl_flags = IPR_IOADL_FLAGS_READ; 6085 ioarcb->read_data_transfer_length = cpu_to_be32(len); 6086 ioarcb->read_ioadl_len = 6087 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 6088 } 6089 6090 for_each_sg(qc->sg, sg, qc->n_elem, si) { 6091 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 6092 ioadl->address = cpu_to_be32(sg_dma_address(sg)); 6093 6094 last_ioadl = ioadl; 6095 ioadl++; 6096 } 6097 6098 if (likely(last_ioadl)) 6099 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 6100 } 6101 6102 /** 6103 * ipr_qc_issue - Issue a SATA qc to a device 6104 * @qc: queued command 6105 * 6106 * Return value: 6107 * 0 if success 6108 **/ 6109 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) 6110 { 6111 struct ata_port *ap = qc->ap; 6112 struct ipr_sata_port *sata_port = ap->private_data; 6113 struct ipr_resource_entry *res = sata_port->res; 6114 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 6115 struct ipr_cmnd *ipr_cmd; 6116 struct ipr_ioarcb *ioarcb; 6117 struct ipr_ioarcb_ata_regs *regs; 6118 6119 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead)) 6120 return AC_ERR_SYSTEM; 6121 6122 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 6123 ioarcb = &ipr_cmd->ioarcb; 6124 6125 if (ioa_cfg->sis64) { 6126 regs = &ipr_cmd->i.ata_ioadl.regs; 6127 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb)); 6128 } else 6129 regs = &ioarcb->u.add_data.u.regs; 6130 6131 memset(regs, 0, sizeof(*regs)); 6132 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs)); 6133 6134 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 6135 ipr_cmd->qc = qc; 6136 ipr_cmd->done = ipr_sata_done; 6137 ipr_cmd->ioarcb.res_handle = res->res_handle; 6138 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU; 6139 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 6140 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6141 ipr_cmd->dma_use_sg = qc->n_elem; 6142 6143 if (ioa_cfg->sis64) 6144 ipr_build_ata_ioadl64(ipr_cmd, qc); 6145 else 6146 ipr_build_ata_ioadl(ipr_cmd, qc); 6147 6148 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 6149 ipr_copy_sata_tf(regs, &qc->tf); 6150 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN); 6151 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res)); 6152 6153 switch (qc->tf.protocol) { 6154 case ATA_PROT_NODATA: 6155 case ATA_PROT_PIO: 6156 break; 6157 6158 case ATA_PROT_DMA: 6159 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 6160 break; 6161 6162 case ATAPI_PROT_PIO: 6163 case ATAPI_PROT_NODATA: 6164 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 6165 break; 6166 6167 case ATAPI_PROT_DMA: 6168 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 6169 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 6170 break; 6171 6172 default: 6173 WARN_ON(1); 6174 return AC_ERR_INVALID; 6175 } 6176 6177 mb(); 6178 6179 ipr_send_command(ipr_cmd); 6180 6181 return 0; 6182 } 6183 6184 /** 6185 * ipr_qc_fill_rtf - Read result TF 6186 * @qc: ATA queued command 6187 * 6188 * Return value: 6189 * true 6190 **/ 6191 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc) 6192 { 6193 struct ipr_sata_port *sata_port = qc->ap->private_data; 6194 struct ipr_ioasa_gata *g = &sata_port->ioasa; 6195 struct ata_taskfile *tf = &qc->result_tf; 6196 6197 tf->feature = g->error; 6198 tf->nsect = g->nsect; 6199 tf->lbal = g->lbal; 6200 tf->lbam = g->lbam; 6201 tf->lbah = g->lbah; 6202 tf->device = g->device; 6203 tf->command = g->status; 6204 tf->hob_nsect = g->hob_nsect; 6205 tf->hob_lbal = g->hob_lbal; 6206 tf->hob_lbam = g->hob_lbam; 6207 tf->hob_lbah = g->hob_lbah; 6208 tf->ctl = g->alt_status; 6209 6210 return true; 6211 } 6212 6213 static struct ata_port_operations ipr_sata_ops = { 6214 .phy_reset = ipr_ata_phy_reset, 6215 .hardreset = ipr_sata_reset, 6216 .post_internal_cmd = ipr_ata_post_internal, 6217 .qc_prep = ata_noop_qc_prep, 6218 .qc_issue = ipr_qc_issue, 6219 .qc_fill_rtf = ipr_qc_fill_rtf, 6220 .port_start = ata_sas_port_start, 6221 .port_stop = ata_sas_port_stop 6222 }; 6223 6224 static struct ata_port_info sata_port_info = { 6225 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA, 6226 .pio_mask = ATA_PIO4_ONLY, 6227 .mwdma_mask = ATA_MWDMA2, 6228 .udma_mask = ATA_UDMA6, 6229 .port_ops = &ipr_sata_ops 6230 }; 6231 6232 #ifdef CONFIG_PPC_PSERIES 6233 static const u16 ipr_blocked_processors[] = { 6234 PV_NORTHSTAR, 6235 PV_PULSAR, 6236 PV_POWER4, 6237 PV_ICESTAR, 6238 PV_SSTAR, 6239 PV_POWER4p, 6240 PV_630, 6241 PV_630p 6242 }; 6243 6244 /** 6245 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 6246 * @ioa_cfg: ioa cfg struct 6247 * 6248 * Adapters that use Gemstone revision < 3.1 do not work reliably on 6249 * certain pSeries hardware. This function determines if the given 6250 * adapter is in one of these confgurations or not. 6251 * 6252 * Return value: 6253 * 1 if adapter is not supported / 0 if adapter is supported 6254 **/ 6255 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 6256 { 6257 int i; 6258 6259 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) { 6260 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ 6261 if (__is_processor(ipr_blocked_processors[i])) 6262 return 1; 6263 } 6264 } 6265 return 0; 6266 } 6267 #else 6268 #define ipr_invalid_adapter(ioa_cfg) 0 6269 #endif 6270 6271 /** 6272 * ipr_ioa_bringdown_done - IOA bring down completion. 6273 * @ipr_cmd: ipr command struct 6274 * 6275 * This function processes the completion of an adapter bring down. 6276 * It wakes any reset sleepers. 6277 * 6278 * Return value: 6279 * IPR_RC_JOB_RETURN 6280 **/ 6281 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 6282 { 6283 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6284 6285 ENTER; 6286 ioa_cfg->in_reset_reload = 0; 6287 ioa_cfg->reset_retries = 0; 6288 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6289 wake_up_all(&ioa_cfg->reset_wait_q); 6290 6291 spin_unlock_irq(ioa_cfg->host->host_lock); 6292 scsi_unblock_requests(ioa_cfg->host); 6293 spin_lock_irq(ioa_cfg->host->host_lock); 6294 LEAVE; 6295 6296 return IPR_RC_JOB_RETURN; 6297 } 6298 6299 /** 6300 * ipr_ioa_reset_done - IOA reset completion. 6301 * @ipr_cmd: ipr command struct 6302 * 6303 * This function processes the completion of an adapter reset. 6304 * It schedules any necessary mid-layer add/removes and 6305 * wakes any reset sleepers. 6306 * 6307 * Return value: 6308 * IPR_RC_JOB_RETURN 6309 **/ 6310 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 6311 { 6312 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6313 struct ipr_resource_entry *res; 6314 struct ipr_hostrcb *hostrcb, *temp; 6315 int i = 0; 6316 6317 ENTER; 6318 ioa_cfg->in_reset_reload = 0; 6319 ioa_cfg->allow_cmds = 1; 6320 ioa_cfg->reset_cmd = NULL; 6321 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 6322 6323 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 6324 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { 6325 ipr_trace; 6326 break; 6327 } 6328 } 6329 schedule_work(&ioa_cfg->work_q); 6330 6331 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { 6332 list_del(&hostrcb->queue); 6333 if (i++ < IPR_NUM_LOG_HCAMS) 6334 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 6335 else 6336 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 6337 } 6338 6339 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS); 6340 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 6341 6342 ioa_cfg->reset_retries = 0; 6343 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6344 wake_up_all(&ioa_cfg->reset_wait_q); 6345 6346 spin_unlock(ioa_cfg->host->host_lock); 6347 scsi_unblock_requests(ioa_cfg->host); 6348 spin_lock(ioa_cfg->host->host_lock); 6349 6350 if (!ioa_cfg->allow_cmds) 6351 scsi_block_requests(ioa_cfg->host); 6352 6353 LEAVE; 6354 return IPR_RC_JOB_RETURN; 6355 } 6356 6357 /** 6358 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 6359 * @supported_dev: supported device struct 6360 * @vpids: vendor product id struct 6361 * 6362 * Return value: 6363 * none 6364 **/ 6365 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 6366 struct ipr_std_inq_vpids *vpids) 6367 { 6368 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 6369 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 6370 supported_dev->num_records = 1; 6371 supported_dev->data_length = 6372 cpu_to_be16(sizeof(struct ipr_supported_device)); 6373 supported_dev->reserved = 0; 6374 } 6375 6376 /** 6377 * ipr_set_supported_devs - Send Set Supported Devices for a device 6378 * @ipr_cmd: ipr command struct 6379 * 6380 * This function sends a Set Supported Devices to the adapter 6381 * 6382 * Return value: 6383 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6384 **/ 6385 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 6386 { 6387 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6388 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 6389 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6390 struct ipr_resource_entry *res = ipr_cmd->u.res; 6391 6392 ipr_cmd->job_step = ipr_ioa_reset_done; 6393 6394 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 6395 if (!ipr_is_scsi_disk(res)) 6396 continue; 6397 6398 ipr_cmd->u.res = res; 6399 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids); 6400 6401 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6402 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6403 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6404 6405 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 6406 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES; 6407 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 6408 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 6409 6410 ipr_init_ioadl(ipr_cmd, 6411 ioa_cfg->vpd_cbs_dma + 6412 offsetof(struct ipr_misc_cbs, supp_dev), 6413 sizeof(struct ipr_supported_device), 6414 IPR_IOADL_FLAGS_WRITE_LAST); 6415 6416 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 6417 IPR_SET_SUP_DEVICE_TIMEOUT); 6418 6419 if (!ioa_cfg->sis64) 6420 ipr_cmd->job_step = ipr_set_supported_devs; 6421 return IPR_RC_JOB_RETURN; 6422 } 6423 6424 return IPR_RC_JOB_CONTINUE; 6425 } 6426 6427 /** 6428 * ipr_get_mode_page - Locate specified mode page 6429 * @mode_pages: mode page buffer 6430 * @page_code: page code to find 6431 * @len: minimum required length for mode page 6432 * 6433 * Return value: 6434 * pointer to mode page / NULL on failure 6435 **/ 6436 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 6437 u32 page_code, u32 len) 6438 { 6439 struct ipr_mode_page_hdr *mode_hdr; 6440 u32 page_length; 6441 u32 length; 6442 6443 if (!mode_pages || (mode_pages->hdr.length == 0)) 6444 return NULL; 6445 6446 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 6447 mode_hdr = (struct ipr_mode_page_hdr *) 6448 (mode_pages->data + mode_pages->hdr.block_desc_len); 6449 6450 while (length) { 6451 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 6452 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 6453 return mode_hdr; 6454 break; 6455 } else { 6456 page_length = (sizeof(struct ipr_mode_page_hdr) + 6457 mode_hdr->page_length); 6458 length -= page_length; 6459 mode_hdr = (struct ipr_mode_page_hdr *) 6460 ((unsigned long)mode_hdr + page_length); 6461 } 6462 } 6463 return NULL; 6464 } 6465 6466 /** 6467 * ipr_check_term_power - Check for term power errors 6468 * @ioa_cfg: ioa config struct 6469 * @mode_pages: IOAFP mode pages buffer 6470 * 6471 * Check the IOAFP's mode page 28 for term power errors 6472 * 6473 * Return value: 6474 * nothing 6475 **/ 6476 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 6477 struct ipr_mode_pages *mode_pages) 6478 { 6479 int i; 6480 int entry_length; 6481 struct ipr_dev_bus_entry *bus; 6482 struct ipr_mode_page28 *mode_page; 6483 6484 mode_page = ipr_get_mode_page(mode_pages, 0x28, 6485 sizeof(struct ipr_mode_page28)); 6486 6487 entry_length = mode_page->entry_length; 6488 6489 bus = mode_page->bus; 6490 6491 for (i = 0; i < mode_page->num_entries; i++) { 6492 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 6493 dev_err(&ioa_cfg->pdev->dev, 6494 "Term power is absent on scsi bus %d\n", 6495 bus->res_addr.bus); 6496 } 6497 6498 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 6499 } 6500 } 6501 6502 /** 6503 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 6504 * @ioa_cfg: ioa config struct 6505 * 6506 * Looks through the config table checking for SES devices. If 6507 * the SES device is in the SES table indicating a maximum SCSI 6508 * bus speed, the speed is limited for the bus. 6509 * 6510 * Return value: 6511 * none 6512 **/ 6513 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 6514 { 6515 u32 max_xfer_rate; 6516 int i; 6517 6518 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 6519 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 6520 ioa_cfg->bus_attr[i].bus_width); 6521 6522 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 6523 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 6524 } 6525 } 6526 6527 /** 6528 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 6529 * @ioa_cfg: ioa config struct 6530 * @mode_pages: mode page 28 buffer 6531 * 6532 * Updates mode page 28 based on driver configuration 6533 * 6534 * Return value: 6535 * none 6536 **/ 6537 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 6538 struct ipr_mode_pages *mode_pages) 6539 { 6540 int i, entry_length; 6541 struct ipr_dev_bus_entry *bus; 6542 struct ipr_bus_attributes *bus_attr; 6543 struct ipr_mode_page28 *mode_page; 6544 6545 mode_page = ipr_get_mode_page(mode_pages, 0x28, 6546 sizeof(struct ipr_mode_page28)); 6547 6548 entry_length = mode_page->entry_length; 6549 6550 /* Loop for each device bus entry */ 6551 for (i = 0, bus = mode_page->bus; 6552 i < mode_page->num_entries; 6553 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 6554 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 6555 dev_err(&ioa_cfg->pdev->dev, 6556 "Invalid resource address reported: 0x%08X\n", 6557 IPR_GET_PHYS_LOC(bus->res_addr)); 6558 continue; 6559 } 6560 6561 bus_attr = &ioa_cfg->bus_attr[i]; 6562 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 6563 bus->bus_width = bus_attr->bus_width; 6564 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 6565 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 6566 if (bus_attr->qas_enabled) 6567 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 6568 else 6569 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 6570 } 6571 } 6572 6573 /** 6574 * ipr_build_mode_select - Build a mode select command 6575 * @ipr_cmd: ipr command struct 6576 * @res_handle: resource handle to send command to 6577 * @parm: Byte 2 of Mode Sense command 6578 * @dma_addr: DMA buffer address 6579 * @xfer_len: data transfer length 6580 * 6581 * Return value: 6582 * none 6583 **/ 6584 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 6585 __be32 res_handle, u8 parm, 6586 dma_addr_t dma_addr, u8 xfer_len) 6587 { 6588 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6589 6590 ioarcb->res_handle = res_handle; 6591 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6592 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6593 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 6594 ioarcb->cmd_pkt.cdb[1] = parm; 6595 ioarcb->cmd_pkt.cdb[4] = xfer_len; 6596 6597 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST); 6598 } 6599 6600 /** 6601 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 6602 * @ipr_cmd: ipr command struct 6603 * 6604 * This function sets up the SCSI bus attributes and sends 6605 * a Mode Select for Page 28 to activate them. 6606 * 6607 * Return value: 6608 * IPR_RC_JOB_RETURN 6609 **/ 6610 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 6611 { 6612 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6613 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 6614 int length; 6615 6616 ENTER; 6617 ipr_scsi_bus_speed_limit(ioa_cfg); 6618 ipr_check_term_power(ioa_cfg, mode_pages); 6619 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 6620 length = mode_pages->hdr.length + 1; 6621 mode_pages->hdr.length = 0; 6622 6623 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 6624 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 6625 length); 6626 6627 ipr_cmd->job_step = ipr_set_supported_devs; 6628 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 6629 struct ipr_resource_entry, queue); 6630 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6631 6632 LEAVE; 6633 return IPR_RC_JOB_RETURN; 6634 } 6635 6636 /** 6637 * ipr_build_mode_sense - Builds a mode sense command 6638 * @ipr_cmd: ipr command struct 6639 * @res: resource entry struct 6640 * @parm: Byte 2 of mode sense command 6641 * @dma_addr: DMA address of mode sense buffer 6642 * @xfer_len: Size of DMA buffer 6643 * 6644 * Return value: 6645 * none 6646 **/ 6647 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 6648 __be32 res_handle, 6649 u8 parm, dma_addr_t dma_addr, u8 xfer_len) 6650 { 6651 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6652 6653 ioarcb->res_handle = res_handle; 6654 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 6655 ioarcb->cmd_pkt.cdb[2] = parm; 6656 ioarcb->cmd_pkt.cdb[4] = xfer_len; 6657 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6658 6659 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 6660 } 6661 6662 /** 6663 * ipr_reset_cmd_failed - Handle failure of IOA reset command 6664 * @ipr_cmd: ipr command struct 6665 * 6666 * This function handles the failure of an IOA bringup command. 6667 * 6668 * Return value: 6669 * IPR_RC_JOB_RETURN 6670 **/ 6671 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 6672 { 6673 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6674 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6675 6676 dev_err(&ioa_cfg->pdev->dev, 6677 "0x%02X failed with IOASC: 0x%08X\n", 6678 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 6679 6680 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6681 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6682 return IPR_RC_JOB_RETURN; 6683 } 6684 6685 /** 6686 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 6687 * @ipr_cmd: ipr command struct 6688 * 6689 * This function handles the failure of a Mode Sense to the IOAFP. 6690 * Some adapters do not handle all mode pages. 6691 * 6692 * Return value: 6693 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6694 **/ 6695 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 6696 { 6697 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6698 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6699 6700 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 6701 ipr_cmd->job_step = ipr_set_supported_devs; 6702 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 6703 struct ipr_resource_entry, queue); 6704 return IPR_RC_JOB_CONTINUE; 6705 } 6706 6707 return ipr_reset_cmd_failed(ipr_cmd); 6708 } 6709 6710 /** 6711 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 6712 * @ipr_cmd: ipr command struct 6713 * 6714 * This function send a Page 28 mode sense to the IOA to 6715 * retrieve SCSI bus attributes. 6716 * 6717 * Return value: 6718 * IPR_RC_JOB_RETURN 6719 **/ 6720 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 6721 { 6722 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6723 6724 ENTER; 6725 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 6726 0x28, ioa_cfg->vpd_cbs_dma + 6727 offsetof(struct ipr_misc_cbs, mode_pages), 6728 sizeof(struct ipr_mode_pages)); 6729 6730 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 6731 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 6732 6733 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6734 6735 LEAVE; 6736 return IPR_RC_JOB_RETURN; 6737 } 6738 6739 /** 6740 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA 6741 * @ipr_cmd: ipr command struct 6742 * 6743 * This function enables dual IOA RAID support if possible. 6744 * 6745 * Return value: 6746 * IPR_RC_JOB_RETURN 6747 **/ 6748 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd) 6749 { 6750 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6751 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 6752 struct ipr_mode_page24 *mode_page; 6753 int length; 6754 6755 ENTER; 6756 mode_page = ipr_get_mode_page(mode_pages, 0x24, 6757 sizeof(struct ipr_mode_page24)); 6758 6759 if (mode_page) 6760 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF; 6761 6762 length = mode_pages->hdr.length + 1; 6763 mode_pages->hdr.length = 0; 6764 6765 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 6766 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 6767 length); 6768 6769 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 6770 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6771 6772 LEAVE; 6773 return IPR_RC_JOB_RETURN; 6774 } 6775 6776 /** 6777 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense 6778 * @ipr_cmd: ipr command struct 6779 * 6780 * This function handles the failure of a Mode Sense to the IOAFP. 6781 * Some adapters do not handle all mode pages. 6782 * 6783 * Return value: 6784 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6785 **/ 6786 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd) 6787 { 6788 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6789 6790 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 6791 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 6792 return IPR_RC_JOB_CONTINUE; 6793 } 6794 6795 return ipr_reset_cmd_failed(ipr_cmd); 6796 } 6797 6798 /** 6799 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA 6800 * @ipr_cmd: ipr command struct 6801 * 6802 * This function send a mode sense to the IOA to retrieve 6803 * the IOA Advanced Function Control mode page. 6804 * 6805 * Return value: 6806 * IPR_RC_JOB_RETURN 6807 **/ 6808 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd) 6809 { 6810 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6811 6812 ENTER; 6813 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 6814 0x24, ioa_cfg->vpd_cbs_dma + 6815 offsetof(struct ipr_misc_cbs, mode_pages), 6816 sizeof(struct ipr_mode_pages)); 6817 6818 ipr_cmd->job_step = ipr_ioafp_mode_select_page24; 6819 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed; 6820 6821 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6822 6823 LEAVE; 6824 return IPR_RC_JOB_RETURN; 6825 } 6826 6827 /** 6828 * ipr_init_res_table - Initialize the resource table 6829 * @ipr_cmd: ipr command struct 6830 * 6831 * This function looks through the existing resource table, comparing 6832 * it with the config table. This function will take care of old/new 6833 * devices and schedule adding/removing them from the mid-layer 6834 * as appropriate. 6835 * 6836 * Return value: 6837 * IPR_RC_JOB_CONTINUE 6838 **/ 6839 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 6840 { 6841 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6842 struct ipr_resource_entry *res, *temp; 6843 struct ipr_config_table_entry_wrapper cfgtew; 6844 int entries, found, flag, i; 6845 LIST_HEAD(old_res); 6846 6847 ENTER; 6848 if (ioa_cfg->sis64) 6849 flag = ioa_cfg->u.cfg_table64->hdr64.flags; 6850 else 6851 flag = ioa_cfg->u.cfg_table->hdr.flags; 6852 6853 if (flag & IPR_UCODE_DOWNLOAD_REQ) 6854 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 6855 6856 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 6857 list_move_tail(&res->queue, &old_res); 6858 6859 if (ioa_cfg->sis64) 6860 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries); 6861 else 6862 entries = ioa_cfg->u.cfg_table->hdr.num_entries; 6863 6864 for (i = 0; i < entries; i++) { 6865 if (ioa_cfg->sis64) 6866 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i]; 6867 else 6868 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i]; 6869 found = 0; 6870 6871 list_for_each_entry_safe(res, temp, &old_res, queue) { 6872 if (ipr_is_same_device(res, &cfgtew)) { 6873 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 6874 found = 1; 6875 break; 6876 } 6877 } 6878 6879 if (!found) { 6880 if (list_empty(&ioa_cfg->free_res_q)) { 6881 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 6882 break; 6883 } 6884 6885 found = 1; 6886 res = list_entry(ioa_cfg->free_res_q.next, 6887 struct ipr_resource_entry, queue); 6888 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 6889 ipr_init_res_entry(res, &cfgtew); 6890 res->add_to_ml = 1; 6891 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))) 6892 res->sdev->allow_restart = 1; 6893 6894 if (found) 6895 ipr_update_res_entry(res, &cfgtew); 6896 } 6897 6898 list_for_each_entry_safe(res, temp, &old_res, queue) { 6899 if (res->sdev) { 6900 res->del_from_ml = 1; 6901 res->res_handle = IPR_INVALID_RES_HANDLE; 6902 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 6903 } 6904 } 6905 6906 list_for_each_entry_safe(res, temp, &old_res, queue) { 6907 ipr_clear_res_target(res); 6908 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 6909 } 6910 6911 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 6912 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24; 6913 else 6914 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 6915 6916 LEAVE; 6917 return IPR_RC_JOB_CONTINUE; 6918 } 6919 6920 /** 6921 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 6922 * @ipr_cmd: ipr command struct 6923 * 6924 * This function sends a Query IOA Configuration command 6925 * to the adapter to retrieve the IOA configuration table. 6926 * 6927 * Return value: 6928 * IPR_RC_JOB_RETURN 6929 **/ 6930 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 6931 { 6932 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6933 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6934 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 6935 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 6936 6937 ENTER; 6938 if (cap->cap & IPR_CAP_DUAL_IOA_RAID) 6939 ioa_cfg->dual_raid = 1; 6940 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 6941 ucode_vpd->major_release, ucode_vpd->card_type, 6942 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 6943 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6944 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6945 6946 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 6947 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff; 6948 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff; 6949 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff; 6950 6951 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size, 6952 IPR_IOADL_FLAGS_READ_LAST); 6953 6954 ipr_cmd->job_step = ipr_init_res_table; 6955 6956 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6957 6958 LEAVE; 6959 return IPR_RC_JOB_RETURN; 6960 } 6961 6962 /** 6963 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 6964 * @ipr_cmd: ipr command struct 6965 * 6966 * This utility function sends an inquiry to the adapter. 6967 * 6968 * Return value: 6969 * none 6970 **/ 6971 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 6972 dma_addr_t dma_addr, u8 xfer_len) 6973 { 6974 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6975 6976 ENTER; 6977 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6978 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6979 6980 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 6981 ioarcb->cmd_pkt.cdb[1] = flags; 6982 ioarcb->cmd_pkt.cdb[2] = page; 6983 ioarcb->cmd_pkt.cdb[4] = xfer_len; 6984 6985 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 6986 6987 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6988 LEAVE; 6989 } 6990 6991 /** 6992 * ipr_inquiry_page_supported - Is the given inquiry page supported 6993 * @page0: inquiry page 0 buffer 6994 * @page: page code. 6995 * 6996 * This function determines if the specified inquiry page is supported. 6997 * 6998 * Return value: 6999 * 1 if page is supported / 0 if not 7000 **/ 7001 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 7002 { 7003 int i; 7004 7005 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 7006 if (page0->page[i] == page) 7007 return 1; 7008 7009 return 0; 7010 } 7011 7012 /** 7013 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter. 7014 * @ipr_cmd: ipr command struct 7015 * 7016 * This function sends a Page 0xD0 inquiry to the adapter 7017 * to retrieve adapter capabilities. 7018 * 7019 * Return value: 7020 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7021 **/ 7022 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd) 7023 { 7024 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7025 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 7026 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 7027 7028 ENTER; 7029 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 7030 memset(cap, 0, sizeof(*cap)); 7031 7032 if (ipr_inquiry_page_supported(page0, 0xD0)) { 7033 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0, 7034 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap), 7035 sizeof(struct ipr_inquiry_cap)); 7036 return IPR_RC_JOB_RETURN; 7037 } 7038 7039 LEAVE; 7040 return IPR_RC_JOB_CONTINUE; 7041 } 7042 7043 /** 7044 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 7045 * @ipr_cmd: ipr command struct 7046 * 7047 * This function sends a Page 3 inquiry to the adapter 7048 * to retrieve software VPD information. 7049 * 7050 * Return value: 7051 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7052 **/ 7053 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 7054 { 7055 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7056 7057 ENTER; 7058 7059 ipr_cmd->job_step = ipr_ioafp_cap_inquiry; 7060 7061 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 7062 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 7063 sizeof(struct ipr_inquiry_page3)); 7064 7065 LEAVE; 7066 return IPR_RC_JOB_RETURN; 7067 } 7068 7069 /** 7070 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 7071 * @ipr_cmd: ipr command struct 7072 * 7073 * This function sends a Page 0 inquiry to the adapter 7074 * to retrieve supported inquiry pages. 7075 * 7076 * Return value: 7077 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7078 **/ 7079 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 7080 { 7081 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7082 char type[5]; 7083 7084 ENTER; 7085 7086 /* Grab the type out of the VPD and store it away */ 7087 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 7088 type[4] = '\0'; 7089 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 7090 7091 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 7092 7093 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 7094 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 7095 sizeof(struct ipr_inquiry_page0)); 7096 7097 LEAVE; 7098 return IPR_RC_JOB_RETURN; 7099 } 7100 7101 /** 7102 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 7103 * @ipr_cmd: ipr command struct 7104 * 7105 * This function sends a standard inquiry to the adapter. 7106 * 7107 * Return value: 7108 * IPR_RC_JOB_RETURN 7109 **/ 7110 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 7111 { 7112 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7113 7114 ENTER; 7115 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 7116 7117 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 7118 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 7119 sizeof(struct ipr_ioa_vpd)); 7120 7121 LEAVE; 7122 return IPR_RC_JOB_RETURN; 7123 } 7124 7125 /** 7126 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ. 7127 * @ipr_cmd: ipr command struct 7128 * 7129 * This function send an Identify Host Request Response Queue 7130 * command to establish the HRRQ with the adapter. 7131 * 7132 * Return value: 7133 * IPR_RC_JOB_RETURN 7134 **/ 7135 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd) 7136 { 7137 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7138 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7139 7140 ENTER; 7141 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 7142 7143 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 7144 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7145 7146 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7147 if (ioa_cfg->sis64) 7148 ioarcb->cmd_pkt.cdb[1] = 0x1; 7149 ioarcb->cmd_pkt.cdb[2] = 7150 ((u64) ioa_cfg->host_rrq_dma >> 24) & 0xff; 7151 ioarcb->cmd_pkt.cdb[3] = 7152 ((u64) ioa_cfg->host_rrq_dma >> 16) & 0xff; 7153 ioarcb->cmd_pkt.cdb[4] = 7154 ((u64) ioa_cfg->host_rrq_dma >> 8) & 0xff; 7155 ioarcb->cmd_pkt.cdb[5] = 7156 ((u64) ioa_cfg->host_rrq_dma) & 0xff; 7157 ioarcb->cmd_pkt.cdb[7] = 7158 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; 7159 ioarcb->cmd_pkt.cdb[8] = 7160 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; 7161 7162 if (ioa_cfg->sis64) { 7163 ioarcb->cmd_pkt.cdb[10] = 7164 ((u64) ioa_cfg->host_rrq_dma >> 56) & 0xff; 7165 ioarcb->cmd_pkt.cdb[11] = 7166 ((u64) ioa_cfg->host_rrq_dma >> 48) & 0xff; 7167 ioarcb->cmd_pkt.cdb[12] = 7168 ((u64) ioa_cfg->host_rrq_dma >> 40) & 0xff; 7169 ioarcb->cmd_pkt.cdb[13] = 7170 ((u64) ioa_cfg->host_rrq_dma >> 32) & 0xff; 7171 } 7172 7173 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 7174 7175 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7176 7177 LEAVE; 7178 return IPR_RC_JOB_RETURN; 7179 } 7180 7181 /** 7182 * ipr_reset_timer_done - Adapter reset timer function 7183 * @ipr_cmd: ipr command struct 7184 * 7185 * Description: This function is used in adapter reset processing 7186 * for timing events. If the reset_cmd pointer in the IOA 7187 * config struct is not this adapter's we are doing nested 7188 * resets and fail_all_ops will take care of freeing the 7189 * command block. 7190 * 7191 * Return value: 7192 * none 7193 **/ 7194 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 7195 { 7196 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7197 unsigned long lock_flags = 0; 7198 7199 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 7200 7201 if (ioa_cfg->reset_cmd == ipr_cmd) { 7202 list_del(&ipr_cmd->queue); 7203 ipr_cmd->done(ipr_cmd); 7204 } 7205 7206 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 7207 } 7208 7209 /** 7210 * ipr_reset_start_timer - Start a timer for adapter reset job 7211 * @ipr_cmd: ipr command struct 7212 * @timeout: timeout value 7213 * 7214 * Description: This function is used in adapter reset processing 7215 * for timing events. If the reset_cmd pointer in the IOA 7216 * config struct is not this adapter's we are doing nested 7217 * resets and fail_all_ops will take care of freeing the 7218 * command block. 7219 * 7220 * Return value: 7221 * none 7222 **/ 7223 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 7224 unsigned long timeout) 7225 { 7226 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 7227 ipr_cmd->done = ipr_reset_ioa_job; 7228 7229 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 7230 ipr_cmd->timer.expires = jiffies + timeout; 7231 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 7232 add_timer(&ipr_cmd->timer); 7233 } 7234 7235 /** 7236 * ipr_init_ioa_mem - Initialize ioa_cfg control block 7237 * @ioa_cfg: ioa cfg struct 7238 * 7239 * Return value: 7240 * nothing 7241 **/ 7242 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 7243 { 7244 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); 7245 7246 /* Initialize Host RRQ pointers */ 7247 ioa_cfg->hrrq_start = ioa_cfg->host_rrq; 7248 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; 7249 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 7250 ioa_cfg->toggle_bit = 1; 7251 7252 /* Zero out config table */ 7253 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size); 7254 } 7255 7256 /** 7257 * ipr_reset_next_stage - Process IPL stage change based on feedback register. 7258 * @ipr_cmd: ipr command struct 7259 * 7260 * Return value: 7261 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7262 **/ 7263 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd) 7264 { 7265 unsigned long stage, stage_time; 7266 u32 feedback; 7267 volatile u32 int_reg; 7268 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7269 u64 maskval = 0; 7270 7271 feedback = readl(ioa_cfg->regs.init_feedback_reg); 7272 stage = feedback & IPR_IPL_INIT_STAGE_MASK; 7273 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK; 7274 7275 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time); 7276 7277 /* sanity check the stage_time value */ 7278 if (stage_time == 0) 7279 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME; 7280 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME) 7281 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME; 7282 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT) 7283 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT; 7284 7285 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) { 7286 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg); 7287 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7288 stage_time = ioa_cfg->transop_timeout; 7289 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 7290 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) { 7291 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 7292 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 7293 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 7294 maskval = IPR_PCII_IPL_STAGE_CHANGE; 7295 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER; 7296 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg); 7297 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7298 return IPR_RC_JOB_CONTINUE; 7299 } 7300 } 7301 7302 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 7303 ipr_cmd->timer.expires = jiffies + stage_time * HZ; 7304 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 7305 ipr_cmd->done = ipr_reset_ioa_job; 7306 add_timer(&ipr_cmd->timer); 7307 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 7308 7309 return IPR_RC_JOB_RETURN; 7310 } 7311 7312 /** 7313 * ipr_reset_enable_ioa - Enable the IOA following a reset. 7314 * @ipr_cmd: ipr command struct 7315 * 7316 * This function reinitializes some control blocks and 7317 * enables destructive diagnostics on the adapter. 7318 * 7319 * Return value: 7320 * IPR_RC_JOB_RETURN 7321 **/ 7322 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 7323 { 7324 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7325 volatile u32 int_reg; 7326 volatile u64 maskval; 7327 7328 ENTER; 7329 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 7330 ipr_init_ioa_mem(ioa_cfg); 7331 7332 ioa_cfg->allow_interrupts = 1; 7333 if (ioa_cfg->sis64) { 7334 /* Set the adapter to the correct endian mode. */ 7335 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg); 7336 int_reg = readl(ioa_cfg->regs.endian_swap_reg); 7337 } 7338 7339 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 7340 7341 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 7342 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 7343 ioa_cfg->regs.clr_interrupt_mask_reg32); 7344 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7345 return IPR_RC_JOB_CONTINUE; 7346 } 7347 7348 /* Enable destructive diagnostics on IOA */ 7349 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32); 7350 7351 if (ioa_cfg->sis64) { 7352 maskval = IPR_PCII_IPL_STAGE_CHANGE; 7353 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS; 7354 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg); 7355 } else 7356 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32); 7357 7358 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7359 7360 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 7361 7362 if (ioa_cfg->sis64) { 7363 ipr_cmd->job_step = ipr_reset_next_stage; 7364 return IPR_RC_JOB_CONTINUE; 7365 } 7366 7367 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 7368 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ); 7369 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 7370 ipr_cmd->done = ipr_reset_ioa_job; 7371 add_timer(&ipr_cmd->timer); 7372 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 7373 7374 LEAVE; 7375 return IPR_RC_JOB_RETURN; 7376 } 7377 7378 /** 7379 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 7380 * @ipr_cmd: ipr command struct 7381 * 7382 * This function is invoked when an adapter dump has run out 7383 * of processing time. 7384 * 7385 * Return value: 7386 * IPR_RC_JOB_CONTINUE 7387 **/ 7388 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 7389 { 7390 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7391 7392 if (ioa_cfg->sdt_state == GET_DUMP) 7393 ioa_cfg->sdt_state = ABORT_DUMP; 7394 7395 ipr_cmd->job_step = ipr_reset_alert; 7396 7397 return IPR_RC_JOB_CONTINUE; 7398 } 7399 7400 /** 7401 * ipr_unit_check_no_data - Log a unit check/no data error log 7402 * @ioa_cfg: ioa config struct 7403 * 7404 * Logs an error indicating the adapter unit checked, but for some 7405 * reason, we were unable to fetch the unit check buffer. 7406 * 7407 * Return value: 7408 * nothing 7409 **/ 7410 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 7411 { 7412 ioa_cfg->errors_logged++; 7413 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 7414 } 7415 7416 /** 7417 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 7418 * @ioa_cfg: ioa config struct 7419 * 7420 * Fetches the unit check buffer from the adapter by clocking the data 7421 * through the mailbox register. 7422 * 7423 * Return value: 7424 * nothing 7425 **/ 7426 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 7427 { 7428 unsigned long mailbox; 7429 struct ipr_hostrcb *hostrcb; 7430 struct ipr_uc_sdt sdt; 7431 int rc, length; 7432 u32 ioasc; 7433 7434 mailbox = readl(ioa_cfg->ioa_mailbox); 7435 7436 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) { 7437 ipr_unit_check_no_data(ioa_cfg); 7438 return; 7439 } 7440 7441 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 7442 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 7443 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 7444 7445 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) || 7446 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) && 7447 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) { 7448 ipr_unit_check_no_data(ioa_cfg); 7449 return; 7450 } 7451 7452 /* Find length of the first sdt entry (UC buffer) */ 7453 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE) 7454 length = be32_to_cpu(sdt.entry[0].end_token); 7455 else 7456 length = (be32_to_cpu(sdt.entry[0].end_token) - 7457 be32_to_cpu(sdt.entry[0].start_token)) & 7458 IPR_FMT2_MBX_ADDR_MASK; 7459 7460 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 7461 struct ipr_hostrcb, queue); 7462 list_del(&hostrcb->queue); 7463 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 7464 7465 rc = ipr_get_ldump_data_section(ioa_cfg, 7466 be32_to_cpu(sdt.entry[0].start_token), 7467 (__be32 *)&hostrcb->hcam, 7468 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 7469 7470 if (!rc) { 7471 ipr_handle_log_data(ioa_cfg, hostrcb); 7472 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 7473 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED && 7474 ioa_cfg->sdt_state == GET_DUMP) 7475 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 7476 } else 7477 ipr_unit_check_no_data(ioa_cfg); 7478 7479 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 7480 } 7481 7482 /** 7483 * ipr_reset_get_unit_check_job - Call to get the unit check buffer. 7484 * @ipr_cmd: ipr command struct 7485 * 7486 * Description: This function will call to get the unit check buffer. 7487 * 7488 * Return value: 7489 * IPR_RC_JOB_RETURN 7490 **/ 7491 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd) 7492 { 7493 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7494 7495 ENTER; 7496 ioa_cfg->ioa_unit_checked = 0; 7497 ipr_get_unit_check_buffer(ioa_cfg); 7498 ipr_cmd->job_step = ipr_reset_alert; 7499 ipr_reset_start_timer(ipr_cmd, 0); 7500 7501 LEAVE; 7502 return IPR_RC_JOB_RETURN; 7503 } 7504 7505 /** 7506 * ipr_reset_restore_cfg_space - Restore PCI config space. 7507 * @ipr_cmd: ipr command struct 7508 * 7509 * Description: This function restores the saved PCI config space of 7510 * the adapter, fails all outstanding ops back to the callers, and 7511 * fetches the dump/unit check if applicable to this reset. 7512 * 7513 * Return value: 7514 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7515 **/ 7516 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 7517 { 7518 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7519 volatile u32 int_reg; 7520 7521 ENTER; 7522 ioa_cfg->pdev->state_saved = true; 7523 pci_restore_state(ioa_cfg->pdev); 7524 7525 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 7526 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 7527 return IPR_RC_JOB_CONTINUE; 7528 } 7529 7530 ipr_fail_all_ops(ioa_cfg); 7531 7532 if (ioa_cfg->sis64) { 7533 /* Set the adapter to the correct endian mode. */ 7534 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg); 7535 int_reg = readl(ioa_cfg->regs.endian_swap_reg); 7536 } 7537 7538 if (ioa_cfg->ioa_unit_checked) { 7539 if (ioa_cfg->sis64) { 7540 ipr_cmd->job_step = ipr_reset_get_unit_check_job; 7541 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT); 7542 return IPR_RC_JOB_RETURN; 7543 } else { 7544 ioa_cfg->ioa_unit_checked = 0; 7545 ipr_get_unit_check_buffer(ioa_cfg); 7546 ipr_cmd->job_step = ipr_reset_alert; 7547 ipr_reset_start_timer(ipr_cmd, 0); 7548 return IPR_RC_JOB_RETURN; 7549 } 7550 } 7551 7552 if (ioa_cfg->in_ioa_bringdown) { 7553 ipr_cmd->job_step = ipr_ioa_bringdown_done; 7554 } else { 7555 ipr_cmd->job_step = ipr_reset_enable_ioa; 7556 7557 if (GET_DUMP == ioa_cfg->sdt_state) { 7558 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); 7559 ipr_cmd->job_step = ipr_reset_wait_for_dump; 7560 schedule_work(&ioa_cfg->work_q); 7561 return IPR_RC_JOB_RETURN; 7562 } 7563 } 7564 7565 LEAVE; 7566 return IPR_RC_JOB_CONTINUE; 7567 } 7568 7569 /** 7570 * ipr_reset_bist_done - BIST has completed on the adapter. 7571 * @ipr_cmd: ipr command struct 7572 * 7573 * Description: Unblock config space and resume the reset process. 7574 * 7575 * Return value: 7576 * IPR_RC_JOB_CONTINUE 7577 **/ 7578 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd) 7579 { 7580 ENTER; 7581 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 7582 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 7583 LEAVE; 7584 return IPR_RC_JOB_CONTINUE; 7585 } 7586 7587 /** 7588 * ipr_reset_start_bist - Run BIST on the adapter. 7589 * @ipr_cmd: ipr command struct 7590 * 7591 * Description: This function runs BIST on the adapter, then delays 2 seconds. 7592 * 7593 * Return value: 7594 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7595 **/ 7596 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 7597 { 7598 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7599 int rc = PCIBIOS_SUCCESSFUL; 7600 7601 ENTER; 7602 pci_block_user_cfg_access(ioa_cfg->pdev); 7603 7604 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO) 7605 writel(IPR_UPROCI_SIS64_START_BIST, 7606 ioa_cfg->regs.set_uproc_interrupt_reg32); 7607 else 7608 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 7609 7610 if (rc == PCIBIOS_SUCCESSFUL) { 7611 ipr_cmd->job_step = ipr_reset_bist_done; 7612 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 7613 rc = IPR_RC_JOB_RETURN; 7614 } else { 7615 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 7616 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 7617 rc = IPR_RC_JOB_CONTINUE; 7618 } 7619 7620 LEAVE; 7621 return rc; 7622 } 7623 7624 /** 7625 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter 7626 * @ipr_cmd: ipr command struct 7627 * 7628 * Description: This clears PCI reset to the adapter and delays two seconds. 7629 * 7630 * Return value: 7631 * IPR_RC_JOB_RETURN 7632 **/ 7633 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd) 7634 { 7635 ENTER; 7636 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset); 7637 ipr_cmd->job_step = ipr_reset_bist_done; 7638 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 7639 LEAVE; 7640 return IPR_RC_JOB_RETURN; 7641 } 7642 7643 /** 7644 * ipr_reset_slot_reset - Reset the PCI slot of the adapter. 7645 * @ipr_cmd: ipr command struct 7646 * 7647 * Description: This asserts PCI reset to the adapter. 7648 * 7649 * Return value: 7650 * IPR_RC_JOB_RETURN 7651 **/ 7652 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd) 7653 { 7654 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7655 struct pci_dev *pdev = ioa_cfg->pdev; 7656 7657 ENTER; 7658 pci_block_user_cfg_access(pdev); 7659 pci_set_pcie_reset_state(pdev, pcie_warm_reset); 7660 ipr_cmd->job_step = ipr_reset_slot_reset_done; 7661 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT); 7662 LEAVE; 7663 return IPR_RC_JOB_RETURN; 7664 } 7665 7666 /** 7667 * ipr_reset_allowed - Query whether or not IOA can be reset 7668 * @ioa_cfg: ioa config struct 7669 * 7670 * Return value: 7671 * 0 if reset not allowed / non-zero if reset is allowed 7672 **/ 7673 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 7674 { 7675 volatile u32 temp_reg; 7676 7677 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 7678 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 7679 } 7680 7681 /** 7682 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 7683 * @ipr_cmd: ipr command struct 7684 * 7685 * Description: This function waits for adapter permission to run BIST, 7686 * then runs BIST. If the adapter does not give permission after a 7687 * reasonable time, we will reset the adapter anyway. The impact of 7688 * resetting the adapter without warning the adapter is the risk of 7689 * losing the persistent error log on the adapter. If the adapter is 7690 * reset while it is writing to the flash on the adapter, the flash 7691 * segment will have bad ECC and be zeroed. 7692 * 7693 * Return value: 7694 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7695 **/ 7696 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 7697 { 7698 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7699 int rc = IPR_RC_JOB_RETURN; 7700 7701 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 7702 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 7703 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 7704 } else { 7705 ipr_cmd->job_step = ioa_cfg->reset; 7706 rc = IPR_RC_JOB_CONTINUE; 7707 } 7708 7709 return rc; 7710 } 7711 7712 /** 7713 * ipr_reset_alert - Alert the adapter of a pending reset 7714 * @ipr_cmd: ipr command struct 7715 * 7716 * Description: This function alerts the adapter that it will be reset. 7717 * If memory space is not currently enabled, proceed directly 7718 * to running BIST on the adapter. The timer must always be started 7719 * so we guarantee we do not run BIST from ipr_isr. 7720 * 7721 * Return value: 7722 * IPR_RC_JOB_RETURN 7723 **/ 7724 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 7725 { 7726 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7727 u16 cmd_reg; 7728 int rc; 7729 7730 ENTER; 7731 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 7732 7733 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 7734 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 7735 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32); 7736 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 7737 } else { 7738 ipr_cmd->job_step = ioa_cfg->reset; 7739 } 7740 7741 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 7742 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 7743 7744 LEAVE; 7745 return IPR_RC_JOB_RETURN; 7746 } 7747 7748 /** 7749 * ipr_reset_ucode_download_done - Microcode download completion 7750 * @ipr_cmd: ipr command struct 7751 * 7752 * Description: This function unmaps the microcode download buffer. 7753 * 7754 * Return value: 7755 * IPR_RC_JOB_CONTINUE 7756 **/ 7757 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 7758 { 7759 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7760 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 7761 7762 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, 7763 sglist->num_sg, DMA_TO_DEVICE); 7764 7765 ipr_cmd->job_step = ipr_reset_alert; 7766 return IPR_RC_JOB_CONTINUE; 7767 } 7768 7769 /** 7770 * ipr_reset_ucode_download - Download microcode to the adapter 7771 * @ipr_cmd: ipr command struct 7772 * 7773 * Description: This function checks to see if it there is microcode 7774 * to download to the adapter. If there is, a download is performed. 7775 * 7776 * Return value: 7777 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7778 **/ 7779 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 7780 { 7781 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7782 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 7783 7784 ENTER; 7785 ipr_cmd->job_step = ipr_reset_alert; 7786 7787 if (!sglist) 7788 return IPR_RC_JOB_CONTINUE; 7789 7790 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7791 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 7792 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 7793 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 7794 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 7795 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 7796 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 7797 7798 if (ioa_cfg->sis64) 7799 ipr_build_ucode_ioadl64(ipr_cmd, sglist); 7800 else 7801 ipr_build_ucode_ioadl(ipr_cmd, sglist); 7802 ipr_cmd->job_step = ipr_reset_ucode_download_done; 7803 7804 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 7805 IPR_WRITE_BUFFER_TIMEOUT); 7806 7807 LEAVE; 7808 return IPR_RC_JOB_RETURN; 7809 } 7810 7811 /** 7812 * ipr_reset_shutdown_ioa - Shutdown the adapter 7813 * @ipr_cmd: ipr command struct 7814 * 7815 * Description: This function issues an adapter shutdown of the 7816 * specified type to the specified adapter as part of the 7817 * adapter reset job. 7818 * 7819 * Return value: 7820 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7821 **/ 7822 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 7823 { 7824 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7825 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 7826 unsigned long timeout; 7827 int rc = IPR_RC_JOB_CONTINUE; 7828 7829 ENTER; 7830 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { 7831 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7832 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7833 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 7834 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 7835 7836 if (shutdown_type == IPR_SHUTDOWN_NORMAL) 7837 timeout = IPR_SHUTDOWN_TIMEOUT; 7838 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 7839 timeout = IPR_INTERNAL_TIMEOUT; 7840 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 7841 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO; 7842 else 7843 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 7844 7845 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 7846 7847 rc = IPR_RC_JOB_RETURN; 7848 ipr_cmd->job_step = ipr_reset_ucode_download; 7849 } else 7850 ipr_cmd->job_step = ipr_reset_alert; 7851 7852 LEAVE; 7853 return rc; 7854 } 7855 7856 /** 7857 * ipr_reset_ioa_job - Adapter reset job 7858 * @ipr_cmd: ipr command struct 7859 * 7860 * Description: This function is the job router for the adapter reset job. 7861 * 7862 * Return value: 7863 * none 7864 **/ 7865 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 7866 { 7867 u32 rc, ioasc; 7868 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7869 7870 do { 7871 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7872 7873 if (ioa_cfg->reset_cmd != ipr_cmd) { 7874 /* 7875 * We are doing nested adapter resets and this is 7876 * not the current reset job. 7877 */ 7878 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 7879 return; 7880 } 7881 7882 if (IPR_IOASC_SENSE_KEY(ioasc)) { 7883 rc = ipr_cmd->job_step_failed(ipr_cmd); 7884 if (rc == IPR_RC_JOB_RETURN) 7885 return; 7886 } 7887 7888 ipr_reinit_ipr_cmnd(ipr_cmd); 7889 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 7890 rc = ipr_cmd->job_step(ipr_cmd); 7891 } while(rc == IPR_RC_JOB_CONTINUE); 7892 } 7893 7894 /** 7895 * _ipr_initiate_ioa_reset - Initiate an adapter reset 7896 * @ioa_cfg: ioa config struct 7897 * @job_step: first job step of reset job 7898 * @shutdown_type: shutdown type 7899 * 7900 * Description: This function will initiate the reset of the given adapter 7901 * starting at the selected job step. 7902 * If the caller needs to wait on the completion of the reset, 7903 * the caller must sleep on the reset_wait_q. 7904 * 7905 * Return value: 7906 * none 7907 **/ 7908 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 7909 int (*job_step) (struct ipr_cmnd *), 7910 enum ipr_shutdown_type shutdown_type) 7911 { 7912 struct ipr_cmnd *ipr_cmd; 7913 7914 ioa_cfg->in_reset_reload = 1; 7915 ioa_cfg->allow_cmds = 0; 7916 scsi_block_requests(ioa_cfg->host); 7917 7918 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 7919 ioa_cfg->reset_cmd = ipr_cmd; 7920 ipr_cmd->job_step = job_step; 7921 ipr_cmd->u.shutdown_type = shutdown_type; 7922 7923 ipr_reset_ioa_job(ipr_cmd); 7924 } 7925 7926 /** 7927 * ipr_initiate_ioa_reset - Initiate an adapter reset 7928 * @ioa_cfg: ioa config struct 7929 * @shutdown_type: shutdown type 7930 * 7931 * Description: This function will initiate the reset of the given adapter. 7932 * If the caller needs to wait on the completion of the reset, 7933 * the caller must sleep on the reset_wait_q. 7934 * 7935 * Return value: 7936 * none 7937 **/ 7938 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 7939 enum ipr_shutdown_type shutdown_type) 7940 { 7941 if (ioa_cfg->ioa_is_dead) 7942 return; 7943 7944 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) 7945 ioa_cfg->sdt_state = ABORT_DUMP; 7946 7947 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 7948 dev_err(&ioa_cfg->pdev->dev, 7949 "IOA taken offline - error recovery failed\n"); 7950 7951 ioa_cfg->reset_retries = 0; 7952 ioa_cfg->ioa_is_dead = 1; 7953 7954 if (ioa_cfg->in_ioa_bringdown) { 7955 ioa_cfg->reset_cmd = NULL; 7956 ioa_cfg->in_reset_reload = 0; 7957 ipr_fail_all_ops(ioa_cfg); 7958 wake_up_all(&ioa_cfg->reset_wait_q); 7959 7960 spin_unlock_irq(ioa_cfg->host->host_lock); 7961 scsi_unblock_requests(ioa_cfg->host); 7962 spin_lock_irq(ioa_cfg->host->host_lock); 7963 return; 7964 } else { 7965 ioa_cfg->in_ioa_bringdown = 1; 7966 shutdown_type = IPR_SHUTDOWN_NONE; 7967 } 7968 } 7969 7970 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 7971 shutdown_type); 7972 } 7973 7974 /** 7975 * ipr_reset_freeze - Hold off all I/O activity 7976 * @ipr_cmd: ipr command struct 7977 * 7978 * Description: If the PCI slot is frozen, hold off all I/O 7979 * activity; then, as soon as the slot is available again, 7980 * initiate an adapter reset. 7981 */ 7982 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 7983 { 7984 /* Disallow new interrupts, avoid loop */ 7985 ipr_cmd->ioa_cfg->allow_interrupts = 0; 7986 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 7987 ipr_cmd->done = ipr_reset_ioa_job; 7988 return IPR_RC_JOB_RETURN; 7989 } 7990 7991 /** 7992 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 7993 * @pdev: PCI device struct 7994 * 7995 * Description: This routine is called to tell us that the PCI bus 7996 * is down. Can't do anything here, except put the device driver 7997 * into a holding pattern, waiting for the PCI bus to come back. 7998 */ 7999 static void ipr_pci_frozen(struct pci_dev *pdev) 8000 { 8001 unsigned long flags = 0; 8002 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8003 8004 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 8005 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 8006 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 8007 } 8008 8009 /** 8010 * ipr_pci_slot_reset - Called when PCI slot has been reset. 8011 * @pdev: PCI device struct 8012 * 8013 * Description: This routine is called by the pci error recovery 8014 * code after the PCI slot has been reset, just before we 8015 * should resume normal operations. 8016 */ 8017 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 8018 { 8019 unsigned long flags = 0; 8020 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8021 8022 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 8023 if (ioa_cfg->needs_warm_reset) 8024 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8025 else 8026 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 8027 IPR_SHUTDOWN_NONE); 8028 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 8029 return PCI_ERS_RESULT_RECOVERED; 8030 } 8031 8032 /** 8033 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 8034 * @pdev: PCI device struct 8035 * 8036 * Description: This routine is called when the PCI bus has 8037 * permanently failed. 8038 */ 8039 static void ipr_pci_perm_failure(struct pci_dev *pdev) 8040 { 8041 unsigned long flags = 0; 8042 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8043 8044 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 8045 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 8046 ioa_cfg->sdt_state = ABORT_DUMP; 8047 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES; 8048 ioa_cfg->in_ioa_bringdown = 1; 8049 ioa_cfg->allow_cmds = 0; 8050 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8051 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 8052 } 8053 8054 /** 8055 * ipr_pci_error_detected - Called when a PCI error is detected. 8056 * @pdev: PCI device struct 8057 * @state: PCI channel state 8058 * 8059 * Description: Called when a PCI error is detected. 8060 * 8061 * Return value: 8062 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 8063 */ 8064 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 8065 pci_channel_state_t state) 8066 { 8067 switch (state) { 8068 case pci_channel_io_frozen: 8069 ipr_pci_frozen(pdev); 8070 return PCI_ERS_RESULT_NEED_RESET; 8071 case pci_channel_io_perm_failure: 8072 ipr_pci_perm_failure(pdev); 8073 return PCI_ERS_RESULT_DISCONNECT; 8074 break; 8075 default: 8076 break; 8077 } 8078 return PCI_ERS_RESULT_NEED_RESET; 8079 } 8080 8081 /** 8082 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 8083 * @ioa_cfg: ioa cfg struct 8084 * 8085 * Description: This is the second phase of adapter intialization 8086 * This function takes care of initilizing the adapter to the point 8087 * where it can accept new commands. 8088 8089 * Return value: 8090 * 0 on success / -EIO on failure 8091 **/ 8092 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 8093 { 8094 int rc = 0; 8095 unsigned long host_lock_flags = 0; 8096 8097 ENTER; 8098 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 8099 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 8100 if (ioa_cfg->needs_hard_reset) { 8101 ioa_cfg->needs_hard_reset = 0; 8102 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8103 } else 8104 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 8105 IPR_SHUTDOWN_NONE); 8106 8107 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 8108 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 8109 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 8110 8111 if (ioa_cfg->ioa_is_dead) { 8112 rc = -EIO; 8113 } else if (ipr_invalid_adapter(ioa_cfg)) { 8114 if (!ipr_testmode) 8115 rc = -EIO; 8116 8117 dev_err(&ioa_cfg->pdev->dev, 8118 "Adapter not supported in this hardware configuration.\n"); 8119 } 8120 8121 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 8122 8123 LEAVE; 8124 return rc; 8125 } 8126 8127 /** 8128 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 8129 * @ioa_cfg: ioa config struct 8130 * 8131 * Return value: 8132 * none 8133 **/ 8134 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 8135 { 8136 int i; 8137 8138 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 8139 if (ioa_cfg->ipr_cmnd_list[i]) 8140 pci_pool_free(ioa_cfg->ipr_cmd_pool, 8141 ioa_cfg->ipr_cmnd_list[i], 8142 ioa_cfg->ipr_cmnd_list_dma[i]); 8143 8144 ioa_cfg->ipr_cmnd_list[i] = NULL; 8145 } 8146 8147 if (ioa_cfg->ipr_cmd_pool) 8148 pci_pool_destroy (ioa_cfg->ipr_cmd_pool); 8149 8150 ioa_cfg->ipr_cmd_pool = NULL; 8151 } 8152 8153 /** 8154 * ipr_free_mem - Frees memory allocated for an adapter 8155 * @ioa_cfg: ioa cfg struct 8156 * 8157 * Return value: 8158 * nothing 8159 **/ 8160 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 8161 { 8162 int i; 8163 8164 kfree(ioa_cfg->res_entries); 8165 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), 8166 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 8167 ipr_free_cmd_blks(ioa_cfg); 8168 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 8169 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 8170 pci_free_consistent(ioa_cfg->pdev, ioa_cfg->cfg_table_size, 8171 ioa_cfg->u.cfg_table, 8172 ioa_cfg->cfg_table_dma); 8173 8174 for (i = 0; i < IPR_NUM_HCAMS; i++) { 8175 pci_free_consistent(ioa_cfg->pdev, 8176 sizeof(struct ipr_hostrcb), 8177 ioa_cfg->hostrcb[i], 8178 ioa_cfg->hostrcb_dma[i]); 8179 } 8180 8181 ipr_free_dump(ioa_cfg); 8182 kfree(ioa_cfg->trace); 8183 } 8184 8185 /** 8186 * ipr_free_all_resources - Free all allocated resources for an adapter. 8187 * @ipr_cmd: ipr command struct 8188 * 8189 * This function frees all allocated resources for the 8190 * specified adapter. 8191 * 8192 * Return value: 8193 * none 8194 **/ 8195 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 8196 { 8197 struct pci_dev *pdev = ioa_cfg->pdev; 8198 8199 ENTER; 8200 free_irq(pdev->irq, ioa_cfg); 8201 pci_disable_msi(pdev); 8202 iounmap(ioa_cfg->hdw_dma_regs); 8203 pci_release_regions(pdev); 8204 ipr_free_mem(ioa_cfg); 8205 scsi_host_put(ioa_cfg->host); 8206 pci_disable_device(pdev); 8207 LEAVE; 8208 } 8209 8210 /** 8211 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 8212 * @ioa_cfg: ioa config struct 8213 * 8214 * Return value: 8215 * 0 on success / -ENOMEM on allocation failure 8216 **/ 8217 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 8218 { 8219 struct ipr_cmnd *ipr_cmd; 8220 struct ipr_ioarcb *ioarcb; 8221 dma_addr_t dma_addr; 8222 int i; 8223 8224 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, 8225 sizeof(struct ipr_cmnd), 16, 0); 8226 8227 if (!ioa_cfg->ipr_cmd_pool) 8228 return -ENOMEM; 8229 8230 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 8231 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr); 8232 8233 if (!ipr_cmd) { 8234 ipr_free_cmd_blks(ioa_cfg); 8235 return -ENOMEM; 8236 } 8237 8238 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 8239 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 8240 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 8241 8242 ioarcb = &ipr_cmd->ioarcb; 8243 ipr_cmd->dma_addr = dma_addr; 8244 if (ioa_cfg->sis64) 8245 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr); 8246 else 8247 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 8248 8249 ioarcb->host_response_handle = cpu_to_be32(i << 2); 8250 if (ioa_cfg->sis64) { 8251 ioarcb->u.sis64_addr_data.data_ioadl_addr = 8252 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 8253 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr = 8254 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64)); 8255 } else { 8256 ioarcb->write_ioadl_addr = 8257 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 8258 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 8259 ioarcb->ioasa_host_pci_addr = 8260 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa)); 8261 } 8262 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 8263 ipr_cmd->cmd_index = i; 8264 ipr_cmd->ioa_cfg = ioa_cfg; 8265 ipr_cmd->sense_buffer_dma = dma_addr + 8266 offsetof(struct ipr_cmnd, sense_buffer); 8267 8268 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 8269 } 8270 8271 return 0; 8272 } 8273 8274 /** 8275 * ipr_alloc_mem - Allocate memory for an adapter 8276 * @ioa_cfg: ioa config struct 8277 * 8278 * Return value: 8279 * 0 on success / non-zero for error 8280 **/ 8281 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 8282 { 8283 struct pci_dev *pdev = ioa_cfg->pdev; 8284 int i, rc = -ENOMEM; 8285 8286 ENTER; 8287 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * 8288 ioa_cfg->max_devs_supported, GFP_KERNEL); 8289 8290 if (!ioa_cfg->res_entries) 8291 goto out; 8292 8293 if (ioa_cfg->sis64) { 8294 ioa_cfg->target_ids = kzalloc(sizeof(unsigned long) * 8295 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL); 8296 ioa_cfg->array_ids = kzalloc(sizeof(unsigned long) * 8297 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL); 8298 ioa_cfg->vset_ids = kzalloc(sizeof(unsigned long) * 8299 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL); 8300 } 8301 8302 for (i = 0; i < ioa_cfg->max_devs_supported; i++) { 8303 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 8304 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg; 8305 } 8306 8307 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, 8308 sizeof(struct ipr_misc_cbs), 8309 &ioa_cfg->vpd_cbs_dma); 8310 8311 if (!ioa_cfg->vpd_cbs) 8312 goto out_free_res_entries; 8313 8314 if (ipr_alloc_cmd_blks(ioa_cfg)) 8315 goto out_free_vpd_cbs; 8316 8317 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, 8318 sizeof(u32) * IPR_NUM_CMD_BLKS, 8319 &ioa_cfg->host_rrq_dma); 8320 8321 if (!ioa_cfg->host_rrq) 8322 goto out_ipr_free_cmd_blocks; 8323 8324 ioa_cfg->u.cfg_table = pci_alloc_consistent(ioa_cfg->pdev, 8325 ioa_cfg->cfg_table_size, 8326 &ioa_cfg->cfg_table_dma); 8327 8328 if (!ioa_cfg->u.cfg_table) 8329 goto out_free_host_rrq; 8330 8331 for (i = 0; i < IPR_NUM_HCAMS; i++) { 8332 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, 8333 sizeof(struct ipr_hostrcb), 8334 &ioa_cfg->hostrcb_dma[i]); 8335 8336 if (!ioa_cfg->hostrcb[i]) 8337 goto out_free_hostrcb_dma; 8338 8339 ioa_cfg->hostrcb[i]->hostrcb_dma = 8340 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 8341 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg; 8342 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 8343 } 8344 8345 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * 8346 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 8347 8348 if (!ioa_cfg->trace) 8349 goto out_free_hostrcb_dma; 8350 8351 rc = 0; 8352 out: 8353 LEAVE; 8354 return rc; 8355 8356 out_free_hostrcb_dma: 8357 while (i-- > 0) { 8358 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), 8359 ioa_cfg->hostrcb[i], 8360 ioa_cfg->hostrcb_dma[i]); 8361 } 8362 pci_free_consistent(pdev, ioa_cfg->cfg_table_size, 8363 ioa_cfg->u.cfg_table, 8364 ioa_cfg->cfg_table_dma); 8365 out_free_host_rrq: 8366 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 8367 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 8368 out_ipr_free_cmd_blocks: 8369 ipr_free_cmd_blks(ioa_cfg); 8370 out_free_vpd_cbs: 8371 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), 8372 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 8373 out_free_res_entries: 8374 kfree(ioa_cfg->res_entries); 8375 goto out; 8376 } 8377 8378 /** 8379 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 8380 * @ioa_cfg: ioa config struct 8381 * 8382 * Return value: 8383 * none 8384 **/ 8385 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 8386 { 8387 int i; 8388 8389 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 8390 ioa_cfg->bus_attr[i].bus = i; 8391 ioa_cfg->bus_attr[i].qas_enabled = 0; 8392 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 8393 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 8394 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 8395 else 8396 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 8397 } 8398 } 8399 8400 /** 8401 * ipr_init_ioa_cfg - Initialize IOA config struct 8402 * @ioa_cfg: ioa config struct 8403 * @host: scsi host struct 8404 * @pdev: PCI dev struct 8405 * 8406 * Return value: 8407 * none 8408 **/ 8409 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 8410 struct Scsi_Host *host, struct pci_dev *pdev) 8411 { 8412 const struct ipr_interrupt_offsets *p; 8413 struct ipr_interrupts *t; 8414 void __iomem *base; 8415 8416 ioa_cfg->host = host; 8417 ioa_cfg->pdev = pdev; 8418 ioa_cfg->log_level = ipr_log_level; 8419 ioa_cfg->doorbell = IPR_DOORBELL; 8420 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 8421 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 8422 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); 8423 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); 8424 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 8425 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 8426 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 8427 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 8428 8429 INIT_LIST_HEAD(&ioa_cfg->free_q); 8430 INIT_LIST_HEAD(&ioa_cfg->pending_q); 8431 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 8432 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 8433 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 8434 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 8435 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread); 8436 init_waitqueue_head(&ioa_cfg->reset_wait_q); 8437 init_waitqueue_head(&ioa_cfg->msi_wait_q); 8438 ioa_cfg->sdt_state = INACTIVE; 8439 8440 ipr_initialize_bus_attr(ioa_cfg); 8441 ioa_cfg->max_devs_supported = ipr_max_devs; 8442 8443 if (ioa_cfg->sis64) { 8444 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS; 8445 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET; 8446 if (ipr_max_devs > IPR_MAX_SIS64_DEVS) 8447 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS; 8448 } else { 8449 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 8450 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 8451 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS) 8452 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS; 8453 } 8454 host->max_channel = IPR_MAX_BUS_TO_SCAN; 8455 host->unique_id = host->host_no; 8456 host->max_cmd_len = IPR_MAX_CDB_LEN; 8457 pci_set_drvdata(pdev, ioa_cfg); 8458 8459 p = &ioa_cfg->chip_cfg->regs; 8460 t = &ioa_cfg->regs; 8461 base = ioa_cfg->hdw_dma_regs; 8462 8463 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 8464 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 8465 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32; 8466 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 8467 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32; 8468 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 8469 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32; 8470 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 8471 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32; 8472 t->ioarrin_reg = base + p->ioarrin_reg; 8473 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 8474 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32; 8475 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 8476 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32; 8477 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 8478 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32; 8479 8480 if (ioa_cfg->sis64) { 8481 t->init_feedback_reg = base + p->init_feedback_reg; 8482 t->dump_addr_reg = base + p->dump_addr_reg; 8483 t->dump_data_reg = base + p->dump_data_reg; 8484 t->endian_swap_reg = base + p->endian_swap_reg; 8485 } 8486 } 8487 8488 /** 8489 * ipr_get_chip_info - Find adapter chip information 8490 * @dev_id: PCI device id struct 8491 * 8492 * Return value: 8493 * ptr to chip information on success / NULL on failure 8494 **/ 8495 static const struct ipr_chip_t * __devinit 8496 ipr_get_chip_info(const struct pci_device_id *dev_id) 8497 { 8498 int i; 8499 8500 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 8501 if (ipr_chip[i].vendor == dev_id->vendor && 8502 ipr_chip[i].device == dev_id->device) 8503 return &ipr_chip[i]; 8504 return NULL; 8505 } 8506 8507 /** 8508 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi(). 8509 * @pdev: PCI device struct 8510 * 8511 * Description: Simply set the msi_received flag to 1 indicating that 8512 * Message Signaled Interrupts are supported. 8513 * 8514 * Return value: 8515 * 0 on success / non-zero on failure 8516 **/ 8517 static irqreturn_t __devinit ipr_test_intr(int irq, void *devp) 8518 { 8519 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 8520 unsigned long lock_flags = 0; 8521 irqreturn_t rc = IRQ_HANDLED; 8522 8523 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8524 8525 ioa_cfg->msi_received = 1; 8526 wake_up(&ioa_cfg->msi_wait_q); 8527 8528 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8529 return rc; 8530 } 8531 8532 /** 8533 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support. 8534 * @pdev: PCI device struct 8535 * 8536 * Description: The return value from pci_enable_msi() can not always be 8537 * trusted. This routine sets up and initiates a test interrupt to determine 8538 * if the interrupt is received via the ipr_test_intr() service routine. 8539 * If the tests fails, the driver will fall back to LSI. 8540 * 8541 * Return value: 8542 * 0 on success / non-zero on failure 8543 **/ 8544 static int __devinit ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, 8545 struct pci_dev *pdev) 8546 { 8547 int rc; 8548 volatile u32 int_reg; 8549 unsigned long lock_flags = 0; 8550 8551 ENTER; 8552 8553 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8554 init_waitqueue_head(&ioa_cfg->msi_wait_q); 8555 ioa_cfg->msi_received = 0; 8556 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 8557 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32); 8558 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8559 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8560 8561 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg); 8562 if (rc) { 8563 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq); 8564 return rc; 8565 } else if (ipr_debug) 8566 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq); 8567 8568 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32); 8569 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 8570 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ); 8571 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 8572 8573 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8574 if (!ioa_cfg->msi_received) { 8575 /* MSI test failed */ 8576 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n"); 8577 rc = -EOPNOTSUPP; 8578 } else if (ipr_debug) 8579 dev_info(&pdev->dev, "MSI test succeeded.\n"); 8580 8581 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8582 8583 free_irq(pdev->irq, ioa_cfg); 8584 8585 LEAVE; 8586 8587 return rc; 8588 } 8589 8590 /** 8591 * ipr_probe_ioa - Allocates memory and does first stage of initialization 8592 * @pdev: PCI device struct 8593 * @dev_id: PCI device id struct 8594 * 8595 * Return value: 8596 * 0 on success / non-zero on failure 8597 **/ 8598 static int __devinit ipr_probe_ioa(struct pci_dev *pdev, 8599 const struct pci_device_id *dev_id) 8600 { 8601 struct ipr_ioa_cfg *ioa_cfg; 8602 struct Scsi_Host *host; 8603 unsigned long ipr_regs_pci; 8604 void __iomem *ipr_regs; 8605 int rc = PCIBIOS_SUCCESSFUL; 8606 volatile u32 mask, uproc, interrupts; 8607 8608 ENTER; 8609 8610 if ((rc = pci_enable_device(pdev))) { 8611 dev_err(&pdev->dev, "Cannot enable adapter\n"); 8612 goto out; 8613 } 8614 8615 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 8616 8617 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 8618 8619 if (!host) { 8620 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 8621 rc = -ENOMEM; 8622 goto out_disable; 8623 } 8624 8625 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 8626 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 8627 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, 8628 sata_port_info.flags, &ipr_sata_ops); 8629 8630 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id); 8631 8632 if (!ioa_cfg->ipr_chip) { 8633 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 8634 dev_id->vendor, dev_id->device); 8635 goto out_scsi_host_put; 8636 } 8637 8638 /* set SIS 32 or SIS 64 */ 8639 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0; 8640 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg; 8641 8642 if (ipr_transop_timeout) 8643 ioa_cfg->transop_timeout = ipr_transop_timeout; 8644 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT) 8645 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT; 8646 else 8647 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT; 8648 8649 ioa_cfg->revid = pdev->revision; 8650 8651 ipr_regs_pci = pci_resource_start(pdev, 0); 8652 8653 rc = pci_request_regions(pdev, IPR_NAME); 8654 if (rc < 0) { 8655 dev_err(&pdev->dev, 8656 "Couldn't register memory range of registers\n"); 8657 goto out_scsi_host_put; 8658 } 8659 8660 ipr_regs = pci_ioremap_bar(pdev, 0); 8661 8662 if (!ipr_regs) { 8663 dev_err(&pdev->dev, 8664 "Couldn't map memory range of registers\n"); 8665 rc = -ENOMEM; 8666 goto out_release_regions; 8667 } 8668 8669 ioa_cfg->hdw_dma_regs = ipr_regs; 8670 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 8671 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 8672 8673 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 8674 8675 pci_set_master(pdev); 8676 8677 if (ioa_cfg->sis64) { 8678 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 8679 if (rc < 0) { 8680 dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n"); 8681 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 8682 } 8683 8684 } else 8685 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 8686 8687 if (rc < 0) { 8688 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); 8689 goto cleanup_nomem; 8690 } 8691 8692 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 8693 ioa_cfg->chip_cfg->cache_line_size); 8694 8695 if (rc != PCIBIOS_SUCCESSFUL) { 8696 dev_err(&pdev->dev, "Write of cache line size failed\n"); 8697 rc = -EIO; 8698 goto cleanup_nomem; 8699 } 8700 8701 /* Enable MSI style interrupts if they are supported. */ 8702 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) { 8703 rc = ipr_test_msi(ioa_cfg, pdev); 8704 if (rc == -EOPNOTSUPP) 8705 pci_disable_msi(pdev); 8706 else if (rc) 8707 goto out_msi_disable; 8708 else 8709 dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq); 8710 } else if (ipr_debug) 8711 dev_info(&pdev->dev, "Cannot enable MSI.\n"); 8712 8713 /* Save away PCI config space for use following IOA reset */ 8714 rc = pci_save_state(pdev); 8715 8716 if (rc != PCIBIOS_SUCCESSFUL) { 8717 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 8718 rc = -EIO; 8719 goto cleanup_nomem; 8720 } 8721 8722 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 8723 goto cleanup_nomem; 8724 8725 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 8726 goto cleanup_nomem; 8727 8728 if (ioa_cfg->sis64) 8729 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64) 8730 + ((sizeof(struct ipr_config_table_entry64) 8731 * ioa_cfg->max_devs_supported))); 8732 else 8733 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr) 8734 + ((sizeof(struct ipr_config_table_entry) 8735 * ioa_cfg->max_devs_supported))); 8736 8737 rc = ipr_alloc_mem(ioa_cfg); 8738 if (rc < 0) { 8739 dev_err(&pdev->dev, 8740 "Couldn't allocate enough memory for device driver!\n"); 8741 goto cleanup_nomem; 8742 } 8743 8744 /* 8745 * If HRRQ updated interrupt is not masked, or reset alert is set, 8746 * the card is in an unknown state and needs a hard reset 8747 */ 8748 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 8749 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32); 8750 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); 8751 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 8752 ioa_cfg->needs_hard_reset = 1; 8753 if (interrupts & IPR_PCII_ERROR_INTERRUPTS) 8754 ioa_cfg->needs_hard_reset = 1; 8755 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED) 8756 ioa_cfg->ioa_unit_checked = 1; 8757 8758 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 8759 rc = request_irq(pdev->irq, ipr_isr, 8760 ioa_cfg->msi_received ? 0 : IRQF_SHARED, 8761 IPR_NAME, ioa_cfg); 8762 8763 if (rc) { 8764 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 8765 pdev->irq, rc); 8766 goto cleanup_nolog; 8767 } 8768 8769 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) || 8770 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) { 8771 ioa_cfg->needs_warm_reset = 1; 8772 ioa_cfg->reset = ipr_reset_slot_reset; 8773 } else 8774 ioa_cfg->reset = ipr_reset_start_bist; 8775 8776 spin_lock(&ipr_driver_lock); 8777 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 8778 spin_unlock(&ipr_driver_lock); 8779 8780 LEAVE; 8781 out: 8782 return rc; 8783 8784 cleanup_nolog: 8785 ipr_free_mem(ioa_cfg); 8786 cleanup_nomem: 8787 iounmap(ipr_regs); 8788 out_msi_disable: 8789 pci_disable_msi(pdev); 8790 out_release_regions: 8791 pci_release_regions(pdev); 8792 out_scsi_host_put: 8793 scsi_host_put(host); 8794 out_disable: 8795 pci_disable_device(pdev); 8796 goto out; 8797 } 8798 8799 /** 8800 * ipr_scan_vsets - Scans for VSET devices 8801 * @ioa_cfg: ioa config struct 8802 * 8803 * Description: Since the VSET resources do not follow SAM in that we can have 8804 * sparse LUNs with no LUN 0, we have to scan for these ourselves. 8805 * 8806 * Return value: 8807 * none 8808 **/ 8809 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) 8810 { 8811 int target, lun; 8812 8813 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) 8814 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) 8815 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); 8816 } 8817 8818 /** 8819 * ipr_initiate_ioa_bringdown - Bring down an adapter 8820 * @ioa_cfg: ioa config struct 8821 * @shutdown_type: shutdown type 8822 * 8823 * Description: This function will initiate bringing down the adapter. 8824 * This consists of issuing an IOA shutdown to the adapter 8825 * to flush the cache, and running BIST. 8826 * If the caller needs to wait on the completion of the reset, 8827 * the caller must sleep on the reset_wait_q. 8828 * 8829 * Return value: 8830 * none 8831 **/ 8832 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 8833 enum ipr_shutdown_type shutdown_type) 8834 { 8835 ENTER; 8836 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 8837 ioa_cfg->sdt_state = ABORT_DUMP; 8838 ioa_cfg->reset_retries = 0; 8839 ioa_cfg->in_ioa_bringdown = 1; 8840 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 8841 LEAVE; 8842 } 8843 8844 /** 8845 * __ipr_remove - Remove a single adapter 8846 * @pdev: pci device struct 8847 * 8848 * Adapter hot plug remove entry point. 8849 * 8850 * Return value: 8851 * none 8852 **/ 8853 static void __ipr_remove(struct pci_dev *pdev) 8854 { 8855 unsigned long host_lock_flags = 0; 8856 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8857 ENTER; 8858 8859 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 8860 while(ioa_cfg->in_reset_reload) { 8861 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 8862 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 8863 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 8864 } 8865 8866 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 8867 8868 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 8869 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 8870 flush_work_sync(&ioa_cfg->work_q); 8871 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 8872 8873 spin_lock(&ipr_driver_lock); 8874 list_del(&ioa_cfg->queue); 8875 spin_unlock(&ipr_driver_lock); 8876 8877 if (ioa_cfg->sdt_state == ABORT_DUMP) 8878 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 8879 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 8880 8881 ipr_free_all_resources(ioa_cfg); 8882 8883 LEAVE; 8884 } 8885 8886 /** 8887 * ipr_remove - IOA hot plug remove entry point 8888 * @pdev: pci device struct 8889 * 8890 * Adapter hot plug remove entry point. 8891 * 8892 * Return value: 8893 * none 8894 **/ 8895 static void __devexit ipr_remove(struct pci_dev *pdev) 8896 { 8897 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8898 8899 ENTER; 8900 8901 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 8902 &ipr_trace_attr); 8903 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj, 8904 &ipr_dump_attr); 8905 scsi_remove_host(ioa_cfg->host); 8906 8907 __ipr_remove(pdev); 8908 8909 LEAVE; 8910 } 8911 8912 /** 8913 * ipr_probe - Adapter hot plug add entry point 8914 * 8915 * Return value: 8916 * 0 on success / non-zero on failure 8917 **/ 8918 static int __devinit ipr_probe(struct pci_dev *pdev, 8919 const struct pci_device_id *dev_id) 8920 { 8921 struct ipr_ioa_cfg *ioa_cfg; 8922 int rc; 8923 8924 rc = ipr_probe_ioa(pdev, dev_id); 8925 8926 if (rc) 8927 return rc; 8928 8929 ioa_cfg = pci_get_drvdata(pdev); 8930 rc = ipr_probe_ioa_part2(ioa_cfg); 8931 8932 if (rc) { 8933 __ipr_remove(pdev); 8934 return rc; 8935 } 8936 8937 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 8938 8939 if (rc) { 8940 __ipr_remove(pdev); 8941 return rc; 8942 } 8943 8944 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj, 8945 &ipr_trace_attr); 8946 8947 if (rc) { 8948 scsi_remove_host(ioa_cfg->host); 8949 __ipr_remove(pdev); 8950 return rc; 8951 } 8952 8953 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj, 8954 &ipr_dump_attr); 8955 8956 if (rc) { 8957 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 8958 &ipr_trace_attr); 8959 scsi_remove_host(ioa_cfg->host); 8960 __ipr_remove(pdev); 8961 return rc; 8962 } 8963 8964 scsi_scan_host(ioa_cfg->host); 8965 ipr_scan_vsets(ioa_cfg); 8966 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); 8967 ioa_cfg->allow_ml_add_del = 1; 8968 ioa_cfg->host->max_channel = IPR_VSET_BUS; 8969 schedule_work(&ioa_cfg->work_q); 8970 return 0; 8971 } 8972 8973 /** 8974 * ipr_shutdown - Shutdown handler. 8975 * @pdev: pci device struct 8976 * 8977 * This function is invoked upon system shutdown/reboot. It will issue 8978 * an adapter shutdown to the adapter to flush the write cache. 8979 * 8980 * Return value: 8981 * none 8982 **/ 8983 static void ipr_shutdown(struct pci_dev *pdev) 8984 { 8985 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8986 unsigned long lock_flags = 0; 8987 8988 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8989 while(ioa_cfg->in_reset_reload) { 8990 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8991 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 8992 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8993 } 8994 8995 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 8996 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8997 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 8998 } 8999 9000 static struct pci_device_id ipr_pci_table[] __devinitdata = { 9001 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 9002 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 }, 9003 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 9004 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 }, 9005 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 9006 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 }, 9007 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 9008 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 }, 9009 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 9010 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 }, 9011 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 9012 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 }, 9013 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 9014 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 }, 9015 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 9016 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 9017 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9018 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 9019 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 9020 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 9021 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 9022 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9023 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 9024 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 9025 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9026 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 9027 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 9028 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 9029 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 9030 IPR_USE_LONG_TRANSOP_TIMEOUT}, 9031 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 9032 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 9033 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9034 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 9035 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 9036 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9037 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 9038 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 }, 9039 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 9040 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 }, 9041 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 9042 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 9043 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET }, 9044 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 9045 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 }, 9046 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 9047 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 }, 9048 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 9049 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 9050 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9051 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 9052 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 9053 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9054 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9055 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 }, 9056 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9057 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 }, 9058 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9059 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 }, 9060 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9061 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 }, 9062 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, 9063 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 }, 9064 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, 9065 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 }, 9066 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, 9067 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 }, 9068 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, 9069 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0, 0 }, 9070 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, 9071 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 }, 9072 { } 9073 }; 9074 MODULE_DEVICE_TABLE(pci, ipr_pci_table); 9075 9076 static struct pci_error_handlers ipr_err_handler = { 9077 .error_detected = ipr_pci_error_detected, 9078 .slot_reset = ipr_pci_slot_reset, 9079 }; 9080 9081 static struct pci_driver ipr_driver = { 9082 .name = IPR_NAME, 9083 .id_table = ipr_pci_table, 9084 .probe = ipr_probe, 9085 .remove = __devexit_p(ipr_remove), 9086 .shutdown = ipr_shutdown, 9087 .err_handler = &ipr_err_handler, 9088 }; 9089 9090 /** 9091 * ipr_halt_done - Shutdown prepare completion 9092 * 9093 * Return value: 9094 * none 9095 **/ 9096 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd) 9097 { 9098 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9099 9100 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 9101 } 9102 9103 /** 9104 * ipr_halt - Issue shutdown prepare to all adapters 9105 * 9106 * Return value: 9107 * NOTIFY_OK on success / NOTIFY_DONE on failure 9108 **/ 9109 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf) 9110 { 9111 struct ipr_cmnd *ipr_cmd; 9112 struct ipr_ioa_cfg *ioa_cfg; 9113 unsigned long flags = 0; 9114 9115 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF) 9116 return NOTIFY_DONE; 9117 9118 spin_lock(&ipr_driver_lock); 9119 9120 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) { 9121 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9122 if (!ioa_cfg->allow_cmds) { 9123 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9124 continue; 9125 } 9126 9127 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 9128 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 9129 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 9130 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 9131 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 9132 9133 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 9134 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9135 } 9136 spin_unlock(&ipr_driver_lock); 9137 9138 return NOTIFY_OK; 9139 } 9140 9141 static struct notifier_block ipr_notifier = { 9142 ipr_halt, NULL, 0 9143 }; 9144 9145 /** 9146 * ipr_init - Module entry point 9147 * 9148 * Return value: 9149 * 0 on success / negative value on failure 9150 **/ 9151 static int __init ipr_init(void) 9152 { 9153 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 9154 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 9155 9156 register_reboot_notifier(&ipr_notifier); 9157 return pci_register_driver(&ipr_driver); 9158 } 9159 9160 /** 9161 * ipr_exit - Module unload 9162 * 9163 * Module unload entry point. 9164 * 9165 * Return value: 9166 * none 9167 **/ 9168 static void __exit ipr_exit(void) 9169 { 9170 unregister_reboot_notifier(&ipr_notifier); 9171 pci_unregister_driver(&ipr_driver); 9172 } 9173 9174 module_init(ipr_init); 9175 module_exit(ipr_exit); 9176