1 /* 2 * ipr.c -- driver for IBM Power Linux RAID adapters 3 * 4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation 5 * 6 * Copyright (C) 2003, 2004 IBM Corporation 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23 24 /* 25 * Notes: 26 * 27 * This driver is used to control the following SCSI adapters: 28 * 29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B 30 * 31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter 32 * PCI-X Dual Channel Ultra 320 SCSI Adapter 33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card 34 * Embedded SCSI adapter on p615 and p655 systems 35 * 36 * Supported Hardware Features: 37 * - Ultra 320 SCSI controller 38 * - PCI-X host interface 39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine 40 * - Non-Volatile Write Cache 41 * - Supports attachment of non-RAID disks, tape, and optical devices 42 * - RAID Levels 0, 5, 10 43 * - Hot spare 44 * - Background Parity Checking 45 * - Background Data Scrubbing 46 * - Ability to increase the capacity of an existing RAID 5 disk array 47 * by adding disks 48 * 49 * Driver Features: 50 * - Tagged command queuing 51 * - Adapter microcode download 52 * - PCI hot plug 53 * - SCSI device hot plug 54 * 55 */ 56 57 #include <linux/fs.h> 58 #include <linux/init.h> 59 #include <linux/types.h> 60 #include <linux/errno.h> 61 #include <linux/kernel.h> 62 #include <linux/slab.h> 63 #include <linux/vmalloc.h> 64 #include <linux/ioport.h> 65 #include <linux/delay.h> 66 #include <linux/pci.h> 67 #include <linux/wait.h> 68 #include <linux/spinlock.h> 69 #include <linux/sched.h> 70 #include <linux/interrupt.h> 71 #include <linux/blkdev.h> 72 #include <linux/firmware.h> 73 #include <linux/module.h> 74 #include <linux/moduleparam.h> 75 #include <linux/libata.h> 76 #include <linux/hdreg.h> 77 #include <linux/reboot.h> 78 #include <linux/stringify.h> 79 #include <asm/io.h> 80 #include <asm/irq.h> 81 #include <asm/processor.h> 82 #include <scsi/scsi.h> 83 #include <scsi/scsi_host.h> 84 #include <scsi/scsi_tcq.h> 85 #include <scsi/scsi_eh.h> 86 #include <scsi/scsi_cmnd.h> 87 #include "ipr.h" 88 89 /* 90 * Global Data 91 */ 92 static LIST_HEAD(ipr_ioa_head); 93 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL; 94 static unsigned int ipr_max_speed = 1; 95 static int ipr_testmode = 0; 96 static unsigned int ipr_fastfail = 0; 97 static unsigned int ipr_transop_timeout = 0; 98 static unsigned int ipr_debug = 0; 99 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS; 100 static unsigned int ipr_dual_ioa_raid = 1; 101 static DEFINE_SPINLOCK(ipr_driver_lock); 102 103 /* This table describes the differences between DMA controller chips */ 104 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { 105 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */ 106 .mailbox = 0x0042C, 107 .max_cmds = 100, 108 .cache_line_size = 0x20, 109 .clear_isr = 1, 110 { 111 .set_interrupt_mask_reg = 0x0022C, 112 .clr_interrupt_mask_reg = 0x00230, 113 .clr_interrupt_mask_reg32 = 0x00230, 114 .sense_interrupt_mask_reg = 0x0022C, 115 .sense_interrupt_mask_reg32 = 0x0022C, 116 .clr_interrupt_reg = 0x00228, 117 .clr_interrupt_reg32 = 0x00228, 118 .sense_interrupt_reg = 0x00224, 119 .sense_interrupt_reg32 = 0x00224, 120 .ioarrin_reg = 0x00404, 121 .sense_uproc_interrupt_reg = 0x00214, 122 .sense_uproc_interrupt_reg32 = 0x00214, 123 .set_uproc_interrupt_reg = 0x00214, 124 .set_uproc_interrupt_reg32 = 0x00214, 125 .clr_uproc_interrupt_reg = 0x00218, 126 .clr_uproc_interrupt_reg32 = 0x00218 127 } 128 }, 129 { /* Snipe and Scamp */ 130 .mailbox = 0x0052C, 131 .max_cmds = 100, 132 .cache_line_size = 0x20, 133 .clear_isr = 1, 134 { 135 .set_interrupt_mask_reg = 0x00288, 136 .clr_interrupt_mask_reg = 0x0028C, 137 .clr_interrupt_mask_reg32 = 0x0028C, 138 .sense_interrupt_mask_reg = 0x00288, 139 .sense_interrupt_mask_reg32 = 0x00288, 140 .clr_interrupt_reg = 0x00284, 141 .clr_interrupt_reg32 = 0x00284, 142 .sense_interrupt_reg = 0x00280, 143 .sense_interrupt_reg32 = 0x00280, 144 .ioarrin_reg = 0x00504, 145 .sense_uproc_interrupt_reg = 0x00290, 146 .sense_uproc_interrupt_reg32 = 0x00290, 147 .set_uproc_interrupt_reg = 0x00290, 148 .set_uproc_interrupt_reg32 = 0x00290, 149 .clr_uproc_interrupt_reg = 0x00294, 150 .clr_uproc_interrupt_reg32 = 0x00294 151 } 152 }, 153 { /* CRoC */ 154 .mailbox = 0x00044, 155 .max_cmds = 1000, 156 .cache_line_size = 0x20, 157 .clear_isr = 0, 158 { 159 .set_interrupt_mask_reg = 0x00010, 160 .clr_interrupt_mask_reg = 0x00018, 161 .clr_interrupt_mask_reg32 = 0x0001C, 162 .sense_interrupt_mask_reg = 0x00010, 163 .sense_interrupt_mask_reg32 = 0x00014, 164 .clr_interrupt_reg = 0x00008, 165 .clr_interrupt_reg32 = 0x0000C, 166 .sense_interrupt_reg = 0x00000, 167 .sense_interrupt_reg32 = 0x00004, 168 .ioarrin_reg = 0x00070, 169 .sense_uproc_interrupt_reg = 0x00020, 170 .sense_uproc_interrupt_reg32 = 0x00024, 171 .set_uproc_interrupt_reg = 0x00020, 172 .set_uproc_interrupt_reg32 = 0x00024, 173 .clr_uproc_interrupt_reg = 0x00028, 174 .clr_uproc_interrupt_reg32 = 0x0002C, 175 .init_feedback_reg = 0x0005C, 176 .dump_addr_reg = 0x00064, 177 .dump_data_reg = 0x00068, 178 .endian_swap_reg = 0x00084 179 } 180 }, 181 }; 182 183 static const struct ipr_chip_t ipr_chip[] = { 184 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 185 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 186 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 187 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 188 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 189 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] }, 190 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] }, 191 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }, 192 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] } 193 }; 194 195 static int ipr_max_bus_speeds[] = { 196 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE 197 }; 198 199 MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); 200 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); 201 module_param_named(max_speed, ipr_max_speed, uint, 0); 202 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); 203 module_param_named(log_level, ipr_log_level, uint, 0); 204 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); 205 module_param_named(testmode, ipr_testmode, int, 0); 206 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); 207 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR); 208 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); 209 module_param_named(transop_timeout, ipr_transop_timeout, int, 0); 210 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); 211 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR); 212 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)"); 213 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0); 214 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)"); 215 module_param_named(max_devs, ipr_max_devs, int, 0); 216 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. " 217 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]"); 218 MODULE_LICENSE("GPL"); 219 MODULE_VERSION(IPR_DRIVER_VERSION); 220 221 /* A constant array of IOASCs/URCs/Error Messages */ 222 static const 223 struct ipr_error_table_t ipr_error_table[] = { 224 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL, 225 "8155: An unknown error was received"}, 226 {0x00330000, 0, 0, 227 "Soft underlength error"}, 228 {0x005A0000, 0, 0, 229 "Command to be cancelled not found"}, 230 {0x00808000, 0, 0, 231 "Qualified success"}, 232 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL, 233 "FFFE: Soft device bus error recovered by the IOA"}, 234 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL, 235 "4101: Soft device bus fabric error"}, 236 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL, 237 "FFFC: Logical block guard error recovered by the device"}, 238 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL, 239 "FFFC: Logical block reference tag error recovered by the device"}, 240 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL, 241 "4171: Recovered scatter list tag / sequence number error"}, 242 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL, 243 "FF3D: Recovered logical block CRC error on IOA to Host transfer"}, 244 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL, 245 "4171: Recovered logical block sequence number error on IOA to Host transfer"}, 246 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL, 247 "FFFD: Recovered logical block reference tag error detected by the IOA"}, 248 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL, 249 "FFFD: Logical block guard error recovered by the IOA"}, 250 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL, 251 "FFF9: Device sector reassign successful"}, 252 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL, 253 "FFF7: Media error recovered by device rewrite procedures"}, 254 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL, 255 "7001: IOA sector reassignment successful"}, 256 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL, 257 "FFF9: Soft media error. Sector reassignment recommended"}, 258 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL, 259 "FFF7: Media error recovered by IOA rewrite procedures"}, 260 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL, 261 "FF3D: Soft PCI bus error recovered by the IOA"}, 262 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL, 263 "FFF6: Device hardware error recovered by the IOA"}, 264 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL, 265 "FFF6: Device hardware error recovered by the device"}, 266 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL, 267 "FF3D: Soft IOA error recovered by the IOA"}, 268 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL, 269 "FFFA: Undefined device response recovered by the IOA"}, 270 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL, 271 "FFF6: Device bus error, message or command phase"}, 272 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL, 273 "FFFE: Task Management Function failed"}, 274 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL, 275 "FFF6: Failure prediction threshold exceeded"}, 276 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL, 277 "8009: Impending cache battery pack failure"}, 278 {0x02040400, 0, 0, 279 "34FF: Disk device format in progress"}, 280 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL, 281 "9070: IOA requested reset"}, 282 {0x023F0000, 0, 0, 283 "Synchronization required"}, 284 {0x024E0000, 0, 0, 285 "No ready, IOA shutdown"}, 286 {0x025A0000, 0, 0, 287 "Not ready, IOA has been shutdown"}, 288 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL, 289 "3020: Storage subsystem configuration error"}, 290 {0x03110B00, 0, 0, 291 "FFF5: Medium error, data unreadable, recommend reassign"}, 292 {0x03110C00, 0, 0, 293 "7000: Medium error, data unreadable, do not reassign"}, 294 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL, 295 "FFF3: Disk media format bad"}, 296 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL, 297 "3002: Addressed device failed to respond to selection"}, 298 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL, 299 "3100: Device bus error"}, 300 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL, 301 "3109: IOA timed out a device command"}, 302 {0x04088000, 0, 0, 303 "3120: SCSI bus is not operational"}, 304 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL, 305 "4100: Hard device bus fabric error"}, 306 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL, 307 "310C: Logical block guard error detected by the device"}, 308 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL, 309 "310C: Logical block reference tag error detected by the device"}, 310 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL, 311 "4170: Scatter list tag / sequence number error"}, 312 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL, 313 "8150: Logical block CRC error on IOA to Host transfer"}, 314 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL, 315 "4170: Logical block sequence number error on IOA to Host transfer"}, 316 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL, 317 "310D: Logical block reference tag error detected by the IOA"}, 318 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL, 319 "310D: Logical block guard error detected by the IOA"}, 320 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL, 321 "9000: IOA reserved area data check"}, 322 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL, 323 "9001: IOA reserved area invalid data pattern"}, 324 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL, 325 "9002: IOA reserved area LRC error"}, 326 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL, 327 "Hardware Error, IOA metadata access error"}, 328 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL, 329 "102E: Out of alternate sectors for disk storage"}, 330 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL, 331 "FFF4: Data transfer underlength error"}, 332 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL, 333 "FFF4: Data transfer overlength error"}, 334 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL, 335 "3400: Logical unit failure"}, 336 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL, 337 "FFF4: Device microcode is corrupt"}, 338 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL, 339 "8150: PCI bus error"}, 340 {0x04430000, 1, 0, 341 "Unsupported device bus message received"}, 342 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL, 343 "FFF4: Disk device problem"}, 344 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL, 345 "8150: Permanent IOA failure"}, 346 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL, 347 "3010: Disk device returned wrong response to IOA"}, 348 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL, 349 "8151: IOA microcode error"}, 350 {0x04448500, 0, 0, 351 "Device bus status error"}, 352 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL, 353 "8157: IOA error requiring IOA reset to recover"}, 354 {0x04448700, 0, 0, 355 "ATA device status error"}, 356 {0x04490000, 0, 0, 357 "Message reject received from the device"}, 358 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL, 359 "8008: A permanent cache battery pack failure occurred"}, 360 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL, 361 "9090: Disk unit has been modified after the last known status"}, 362 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL, 363 "9081: IOA detected device error"}, 364 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL, 365 "9082: IOA detected device error"}, 366 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL, 367 "3110: Device bus error, message or command phase"}, 368 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL, 369 "3110: SAS Command / Task Management Function failed"}, 370 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL, 371 "9091: Incorrect hardware configuration change has been detected"}, 372 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL, 373 "9073: Invalid multi-adapter configuration"}, 374 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL, 375 "4010: Incorrect connection between cascaded expanders"}, 376 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL, 377 "4020: Connections exceed IOA design limits"}, 378 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL, 379 "4030: Incorrect multipath connection"}, 380 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL, 381 "4110: Unsupported enclosure function"}, 382 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL, 383 "FFF4: Command to logical unit failed"}, 384 {0x05240000, 1, 0, 385 "Illegal request, invalid request type or request packet"}, 386 {0x05250000, 0, 0, 387 "Illegal request, invalid resource handle"}, 388 {0x05258000, 0, 0, 389 "Illegal request, commands not allowed to this device"}, 390 {0x05258100, 0, 0, 391 "Illegal request, command not allowed to a secondary adapter"}, 392 {0x05258200, 0, 0, 393 "Illegal request, command not allowed to a non-optimized resource"}, 394 {0x05260000, 0, 0, 395 "Illegal request, invalid field in parameter list"}, 396 {0x05260100, 0, 0, 397 "Illegal request, parameter not supported"}, 398 {0x05260200, 0, 0, 399 "Illegal request, parameter value invalid"}, 400 {0x052C0000, 0, 0, 401 "Illegal request, command sequence error"}, 402 {0x052C8000, 1, 0, 403 "Illegal request, dual adapter support not enabled"}, 404 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL, 405 "9031: Array protection temporarily suspended, protection resuming"}, 406 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL, 407 "9040: Array protection temporarily suspended, protection resuming"}, 408 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL, 409 "3140: Device bus not ready to ready transition"}, 410 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL, 411 "FFFB: SCSI bus was reset"}, 412 {0x06290500, 0, 0, 413 "FFFE: SCSI bus transition to single ended"}, 414 {0x06290600, 0, 0, 415 "FFFE: SCSI bus transition to LVD"}, 416 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL, 417 "FFFB: SCSI bus was reset by another initiator"}, 418 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL, 419 "3029: A device replacement has occurred"}, 420 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL, 421 "9051: IOA cache data exists for a missing or failed device"}, 422 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL, 423 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"}, 424 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL, 425 "9025: Disk unit is not supported at its physical location"}, 426 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL, 427 "3020: IOA detected a SCSI bus configuration error"}, 428 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL, 429 "3150: SCSI bus configuration error"}, 430 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL, 431 "9074: Asymmetric advanced function disk configuration"}, 432 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL, 433 "4040: Incomplete multipath connection between IOA and enclosure"}, 434 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL, 435 "4041: Incomplete multipath connection between enclosure and device"}, 436 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL, 437 "9075: Incomplete multipath connection between IOA and remote IOA"}, 438 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL, 439 "9076: Configuration error, missing remote IOA"}, 440 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL, 441 "4050: Enclosure does not support a required multipath function"}, 442 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL, 443 "4070: Logically bad block written on device"}, 444 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL, 445 "9041: Array protection temporarily suspended"}, 446 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL, 447 "9042: Corrupt array parity detected on specified device"}, 448 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL, 449 "9030: Array no longer protected due to missing or failed disk unit"}, 450 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL, 451 "9071: Link operational transition"}, 452 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL, 453 "9072: Link not operational transition"}, 454 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL, 455 "9032: Array exposed but still protected"}, 456 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1, 457 "70DD: Device forced failed by disrupt device command"}, 458 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL, 459 "4061: Multipath redundancy level got better"}, 460 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL, 461 "4060: Multipath redundancy level got worse"}, 462 {0x07270000, 0, 0, 463 "Failure due to other device"}, 464 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL, 465 "9008: IOA does not support functions expected by devices"}, 466 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL, 467 "9010: Cache data associated with attached devices cannot be found"}, 468 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL, 469 "9011: Cache data belongs to devices other than those attached"}, 470 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL, 471 "9020: Array missing 2 or more devices with only 1 device present"}, 472 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL, 473 "9021: Array missing 2 or more devices with 2 or more devices present"}, 474 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL, 475 "9022: Exposed array is missing a required device"}, 476 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL, 477 "9023: Array member(s) not at required physical locations"}, 478 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL, 479 "9024: Array not functional due to present hardware configuration"}, 480 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL, 481 "9026: Array not functional due to present hardware configuration"}, 482 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL, 483 "9027: Array is missing a device and parity is out of sync"}, 484 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL, 485 "9028: Maximum number of arrays already exist"}, 486 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL, 487 "9050: Required cache data cannot be located for a disk unit"}, 488 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL, 489 "9052: Cache data exists for a device that has been modified"}, 490 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL, 491 "9054: IOA resources not available due to previous problems"}, 492 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL, 493 "9092: Disk unit requires initialization before use"}, 494 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL, 495 "9029: Incorrect hardware configuration change has been detected"}, 496 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL, 497 "9060: One or more disk pairs are missing from an array"}, 498 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL, 499 "9061: One or more disks are missing from an array"}, 500 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL, 501 "9062: One or more disks are missing from an array"}, 502 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL, 503 "9063: Maximum number of functional arrays has been exceeded"}, 504 {0x0B260000, 0, 0, 505 "Aborted command, invalid descriptor"}, 506 {0x0B5A0000, 0, 0, 507 "Command terminated by host"} 508 }; 509 510 static const struct ipr_ses_table_entry ipr_ses_table[] = { 511 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, 512 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, 513 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ 514 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ 515 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ 516 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ 517 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, 518 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, 519 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 520 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 521 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, 522 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, 523 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } 524 }; 525 526 /* 527 * Function Prototypes 528 */ 529 static int ipr_reset_alert(struct ipr_cmnd *); 530 static void ipr_process_ccn(struct ipr_cmnd *); 531 static void ipr_process_error(struct ipr_cmnd *); 532 static void ipr_reset_ioa_job(struct ipr_cmnd *); 533 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, 534 enum ipr_shutdown_type); 535 536 #ifdef CONFIG_SCSI_IPR_TRACE 537 /** 538 * ipr_trc_hook - Add a trace entry to the driver trace 539 * @ipr_cmd: ipr command struct 540 * @type: trace type 541 * @add_data: additional data 542 * 543 * Return value: 544 * none 545 **/ 546 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, 547 u8 type, u32 add_data) 548 { 549 struct ipr_trace_entry *trace_entry; 550 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 551 552 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++]; 553 trace_entry->time = jiffies; 554 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; 555 trace_entry->type = type; 556 if (ipr_cmd->ioa_cfg->sis64) 557 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command; 558 else 559 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command; 560 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff; 561 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; 562 trace_entry->u.add_data = add_data; 563 } 564 #else 565 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0) 566 #endif 567 568 /** 569 * ipr_lock_and_done - Acquire lock and complete command 570 * @ipr_cmd: ipr command struct 571 * 572 * Return value: 573 * none 574 **/ 575 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd) 576 { 577 unsigned long lock_flags; 578 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 579 580 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 581 ipr_cmd->done(ipr_cmd); 582 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 583 } 584 585 /** 586 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse 587 * @ipr_cmd: ipr command struct 588 * 589 * Return value: 590 * none 591 **/ 592 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 593 { 594 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 595 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 596 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64; 597 dma_addr_t dma_addr = ipr_cmd->dma_addr; 598 599 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 600 ioarcb->data_transfer_length = 0; 601 ioarcb->read_data_transfer_length = 0; 602 ioarcb->ioadl_len = 0; 603 ioarcb->read_ioadl_len = 0; 604 605 if (ipr_cmd->ioa_cfg->sis64) { 606 ioarcb->u.sis64_addr_data.data_ioadl_addr = 607 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 608 ioasa64->u.gata.status = 0; 609 } else { 610 ioarcb->write_ioadl_addr = 611 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 612 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 613 ioasa->u.gata.status = 0; 614 } 615 616 ioasa->hdr.ioasc = 0; 617 ioasa->hdr.residual_data_len = 0; 618 ipr_cmd->scsi_cmd = NULL; 619 ipr_cmd->qc = NULL; 620 ipr_cmd->sense_buffer[0] = 0; 621 ipr_cmd->dma_use_sg = 0; 622 } 623 624 /** 625 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block 626 * @ipr_cmd: ipr command struct 627 * 628 * Return value: 629 * none 630 **/ 631 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd, 632 void (*fast_done) (struct ipr_cmnd *)) 633 { 634 ipr_reinit_ipr_cmnd(ipr_cmd); 635 ipr_cmd->u.scratch = 0; 636 ipr_cmd->sibling = NULL; 637 ipr_cmd->fast_done = fast_done; 638 init_timer(&ipr_cmd->timer); 639 } 640 641 /** 642 * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block 643 * @ioa_cfg: ioa config struct 644 * 645 * Return value: 646 * pointer to ipr command struct 647 **/ 648 static 649 struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) 650 { 651 struct ipr_cmnd *ipr_cmd; 652 653 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue); 654 list_del(&ipr_cmd->queue); 655 656 return ipr_cmd; 657 } 658 659 /** 660 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it 661 * @ioa_cfg: ioa config struct 662 * 663 * Return value: 664 * pointer to ipr command struct 665 **/ 666 static 667 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) 668 { 669 struct ipr_cmnd *ipr_cmd = __ipr_get_free_ipr_cmnd(ioa_cfg); 670 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done); 671 return ipr_cmd; 672 } 673 674 /** 675 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts 676 * @ioa_cfg: ioa config struct 677 * @clr_ints: interrupts to clear 678 * 679 * This function masks all interrupts on the adapter, then clears the 680 * interrupts specified in the mask 681 * 682 * Return value: 683 * none 684 **/ 685 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, 686 u32 clr_ints) 687 { 688 volatile u32 int_reg; 689 690 /* Stop new interrupts */ 691 ioa_cfg->allow_interrupts = 0; 692 693 /* Set interrupt mask to stop all new interrupts */ 694 if (ioa_cfg->sis64) 695 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg); 696 else 697 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); 698 699 /* Clear any pending interrupts */ 700 if (ioa_cfg->sis64) 701 writel(~0, ioa_cfg->regs.clr_interrupt_reg); 702 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32); 703 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 704 } 705 706 /** 707 * ipr_save_pcix_cmd_reg - Save PCI-X command register 708 * @ioa_cfg: ioa config struct 709 * 710 * Return value: 711 * 0 on success / -EIO on failure 712 **/ 713 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 714 { 715 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 716 717 if (pcix_cmd_reg == 0) 718 return 0; 719 720 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 721 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 722 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 723 return -EIO; 724 } 725 726 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; 727 return 0; 728 } 729 730 /** 731 * ipr_set_pcix_cmd_reg - Setup PCI-X command register 732 * @ioa_cfg: ioa config struct 733 * 734 * Return value: 735 * 0 on success / -EIO on failure 736 **/ 737 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 738 { 739 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 740 741 if (pcix_cmd_reg) { 742 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 743 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 744 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); 745 return -EIO; 746 } 747 } 748 749 return 0; 750 } 751 752 /** 753 * ipr_sata_eh_done - done function for aborted SATA commands 754 * @ipr_cmd: ipr command struct 755 * 756 * This function is invoked for ops generated to SATA 757 * devices which are being aborted. 758 * 759 * Return value: 760 * none 761 **/ 762 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd) 763 { 764 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 765 struct ata_queued_cmd *qc = ipr_cmd->qc; 766 struct ipr_sata_port *sata_port = qc->ap->private_data; 767 768 qc->err_mask |= AC_ERR_OTHER; 769 sata_port->ioasa.status |= ATA_BUSY; 770 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 771 ata_qc_complete(qc); 772 } 773 774 /** 775 * ipr_scsi_eh_done - mid-layer done function for aborted ops 776 * @ipr_cmd: ipr command struct 777 * 778 * This function is invoked by the interrupt handler for 779 * ops generated by the SCSI mid-layer which are being aborted. 780 * 781 * Return value: 782 * none 783 **/ 784 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 785 { 786 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 787 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 788 789 scsi_cmd->result |= (DID_ERROR << 16); 790 791 scsi_dma_unmap(ipr_cmd->scsi_cmd); 792 scsi_cmd->scsi_done(scsi_cmd); 793 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 794 } 795 796 /** 797 * ipr_fail_all_ops - Fails all outstanding ops. 798 * @ioa_cfg: ioa config struct 799 * 800 * This function fails all outstanding ops. 801 * 802 * Return value: 803 * none 804 **/ 805 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) 806 { 807 struct ipr_cmnd *ipr_cmd, *temp; 808 809 ENTER; 810 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) { 811 list_del(&ipr_cmd->queue); 812 813 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); 814 ipr_cmd->s.ioasa.hdr.ilid = cpu_to_be32(IPR_DRIVER_ILID); 815 816 if (ipr_cmd->scsi_cmd) 817 ipr_cmd->done = ipr_scsi_eh_done; 818 else if (ipr_cmd->qc) 819 ipr_cmd->done = ipr_sata_eh_done; 820 821 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET); 822 del_timer(&ipr_cmd->timer); 823 ipr_cmd->done(ipr_cmd); 824 } 825 826 LEAVE; 827 } 828 829 /** 830 * ipr_send_command - Send driver initiated requests. 831 * @ipr_cmd: ipr command struct 832 * 833 * This function sends a command to the adapter using the correct write call. 834 * In the case of sis64, calculate the ioarcb size required. Then or in the 835 * appropriate bits. 836 * 837 * Return value: 838 * none 839 **/ 840 static void ipr_send_command(struct ipr_cmnd *ipr_cmd) 841 { 842 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 843 dma_addr_t send_dma_addr = ipr_cmd->dma_addr; 844 845 if (ioa_cfg->sis64) { 846 /* The default size is 256 bytes */ 847 send_dma_addr |= 0x1; 848 849 /* If the number of ioadls * size of ioadl > 128 bytes, 850 then use a 512 byte ioarcb */ 851 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 ) 852 send_dma_addr |= 0x4; 853 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg); 854 } else 855 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg); 856 } 857 858 /** 859 * ipr_do_req - Send driver initiated requests. 860 * @ipr_cmd: ipr command struct 861 * @done: done function 862 * @timeout_func: timeout function 863 * @timeout: timeout value 864 * 865 * This function sends the specified command to the adapter with the 866 * timeout given. The done function is invoked on command completion. 867 * 868 * Return value: 869 * none 870 **/ 871 static void ipr_do_req(struct ipr_cmnd *ipr_cmd, 872 void (*done) (struct ipr_cmnd *), 873 void (*timeout_func) (struct ipr_cmnd *), u32 timeout) 874 { 875 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 876 877 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 878 879 ipr_cmd->done = done; 880 881 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 882 ipr_cmd->timer.expires = jiffies + timeout; 883 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func; 884 885 add_timer(&ipr_cmd->timer); 886 887 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); 888 889 ipr_send_command(ipr_cmd); 890 } 891 892 /** 893 * ipr_internal_cmd_done - Op done function for an internally generated op. 894 * @ipr_cmd: ipr command struct 895 * 896 * This function is the op done function for an internally generated, 897 * blocking op. It simply wakes the sleeping thread. 898 * 899 * Return value: 900 * none 901 **/ 902 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) 903 { 904 if (ipr_cmd->sibling) 905 ipr_cmd->sibling = NULL; 906 else 907 complete(&ipr_cmd->completion); 908 } 909 910 /** 911 * ipr_init_ioadl - initialize the ioadl for the correct SIS type 912 * @ipr_cmd: ipr command struct 913 * @dma_addr: dma address 914 * @len: transfer length 915 * @flags: ioadl flag value 916 * 917 * This function initializes an ioadl in the case where there is only a single 918 * descriptor. 919 * 920 * Return value: 921 * nothing 922 **/ 923 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr, 924 u32 len, int flags) 925 { 926 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 927 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 928 929 ipr_cmd->dma_use_sg = 1; 930 931 if (ipr_cmd->ioa_cfg->sis64) { 932 ioadl64->flags = cpu_to_be32(flags); 933 ioadl64->data_len = cpu_to_be32(len); 934 ioadl64->address = cpu_to_be64(dma_addr); 935 936 ipr_cmd->ioarcb.ioadl_len = 937 cpu_to_be32(sizeof(struct ipr_ioadl64_desc)); 938 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len); 939 } else { 940 ioadl->flags_and_data_len = cpu_to_be32(flags | len); 941 ioadl->address = cpu_to_be32(dma_addr); 942 943 if (flags == IPR_IOADL_FLAGS_READ_LAST) { 944 ipr_cmd->ioarcb.read_ioadl_len = 945 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 946 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len); 947 } else { 948 ipr_cmd->ioarcb.ioadl_len = 949 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 950 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len); 951 } 952 } 953 } 954 955 /** 956 * ipr_send_blocking_cmd - Send command and sleep on its completion. 957 * @ipr_cmd: ipr command struct 958 * @timeout_func: function to invoke if command times out 959 * @timeout: timeout 960 * 961 * Return value: 962 * none 963 **/ 964 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, 965 void (*timeout_func) (struct ipr_cmnd *ipr_cmd), 966 u32 timeout) 967 { 968 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 969 970 init_completion(&ipr_cmd->completion); 971 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); 972 973 spin_unlock_irq(ioa_cfg->host->host_lock); 974 wait_for_completion(&ipr_cmd->completion); 975 spin_lock_irq(ioa_cfg->host->host_lock); 976 } 977 978 /** 979 * ipr_send_hcam - Send an HCAM to the adapter. 980 * @ioa_cfg: ioa config struct 981 * @type: HCAM type 982 * @hostrcb: hostrcb struct 983 * 984 * This function will send a Host Controlled Async command to the adapter. 985 * If HCAMs are currently not allowed to be issued to the adapter, it will 986 * place the hostrcb on the free queue. 987 * 988 * Return value: 989 * none 990 **/ 991 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, 992 struct ipr_hostrcb *hostrcb) 993 { 994 struct ipr_cmnd *ipr_cmd; 995 struct ipr_ioarcb *ioarcb; 996 997 if (ioa_cfg->allow_cmds) { 998 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 999 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 1000 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); 1001 1002 ipr_cmd->u.hostrcb = hostrcb; 1003 ioarcb = &ipr_cmd->ioarcb; 1004 1005 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 1006 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; 1007 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; 1008 ioarcb->cmd_pkt.cdb[1] = type; 1009 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; 1010 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; 1011 1012 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma, 1013 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST); 1014 1015 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) 1016 ipr_cmd->done = ipr_process_ccn; 1017 else 1018 ipr_cmd->done = ipr_process_error; 1019 1020 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); 1021 1022 ipr_send_command(ipr_cmd); 1023 } else { 1024 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 1025 } 1026 } 1027 1028 /** 1029 * ipr_update_ata_class - Update the ata class in the resource entry 1030 * @res: resource entry struct 1031 * @proto: cfgte device bus protocol value 1032 * 1033 * Return value: 1034 * none 1035 **/ 1036 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto) 1037 { 1038 switch (proto) { 1039 case IPR_PROTO_SATA: 1040 case IPR_PROTO_SAS_STP: 1041 res->ata_class = ATA_DEV_ATA; 1042 break; 1043 case IPR_PROTO_SATA_ATAPI: 1044 case IPR_PROTO_SAS_STP_ATAPI: 1045 res->ata_class = ATA_DEV_ATAPI; 1046 break; 1047 default: 1048 res->ata_class = ATA_DEV_UNKNOWN; 1049 break; 1050 }; 1051 } 1052 1053 /** 1054 * ipr_init_res_entry - Initialize a resource entry struct. 1055 * @res: resource entry struct 1056 * @cfgtew: config table entry wrapper struct 1057 * 1058 * Return value: 1059 * none 1060 **/ 1061 static void ipr_init_res_entry(struct ipr_resource_entry *res, 1062 struct ipr_config_table_entry_wrapper *cfgtew) 1063 { 1064 int found = 0; 1065 unsigned int proto; 1066 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg; 1067 struct ipr_resource_entry *gscsi_res = NULL; 1068 1069 res->needs_sync_complete = 0; 1070 res->in_erp = 0; 1071 res->add_to_ml = 0; 1072 res->del_from_ml = 0; 1073 res->resetting_device = 0; 1074 res->sdev = NULL; 1075 res->sata_port = NULL; 1076 1077 if (ioa_cfg->sis64) { 1078 proto = cfgtew->u.cfgte64->proto; 1079 res->res_flags = cfgtew->u.cfgte64->res_flags; 1080 res->qmodel = IPR_QUEUEING_MODEL64(res); 1081 res->type = cfgtew->u.cfgte64->res_type; 1082 1083 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path, 1084 sizeof(res->res_path)); 1085 1086 res->bus = 0; 1087 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1088 sizeof(res->dev_lun.scsi_lun)); 1089 res->lun = scsilun_to_int(&res->dev_lun); 1090 1091 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) { 1092 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) { 1093 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) { 1094 found = 1; 1095 res->target = gscsi_res->target; 1096 break; 1097 } 1098 } 1099 if (!found) { 1100 res->target = find_first_zero_bit(ioa_cfg->target_ids, 1101 ioa_cfg->max_devs_supported); 1102 set_bit(res->target, ioa_cfg->target_ids); 1103 } 1104 } else if (res->type == IPR_RES_TYPE_IOAFP) { 1105 res->bus = IPR_IOAFP_VIRTUAL_BUS; 1106 res->target = 0; 1107 } else if (res->type == IPR_RES_TYPE_ARRAY) { 1108 res->bus = IPR_ARRAY_VIRTUAL_BUS; 1109 res->target = find_first_zero_bit(ioa_cfg->array_ids, 1110 ioa_cfg->max_devs_supported); 1111 set_bit(res->target, ioa_cfg->array_ids); 1112 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) { 1113 res->bus = IPR_VSET_VIRTUAL_BUS; 1114 res->target = find_first_zero_bit(ioa_cfg->vset_ids, 1115 ioa_cfg->max_devs_supported); 1116 set_bit(res->target, ioa_cfg->vset_ids); 1117 } else { 1118 res->target = find_first_zero_bit(ioa_cfg->target_ids, 1119 ioa_cfg->max_devs_supported); 1120 set_bit(res->target, ioa_cfg->target_ids); 1121 } 1122 } else { 1123 proto = cfgtew->u.cfgte->proto; 1124 res->qmodel = IPR_QUEUEING_MODEL(res); 1125 res->flags = cfgtew->u.cfgte->flags; 1126 if (res->flags & IPR_IS_IOA_RESOURCE) 1127 res->type = IPR_RES_TYPE_IOAFP; 1128 else 1129 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f; 1130 1131 res->bus = cfgtew->u.cfgte->res_addr.bus; 1132 res->target = cfgtew->u.cfgte->res_addr.target; 1133 res->lun = cfgtew->u.cfgte->res_addr.lun; 1134 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn); 1135 } 1136 1137 ipr_update_ata_class(res, proto); 1138 } 1139 1140 /** 1141 * ipr_is_same_device - Determine if two devices are the same. 1142 * @res: resource entry struct 1143 * @cfgtew: config table entry wrapper struct 1144 * 1145 * Return value: 1146 * 1 if the devices are the same / 0 otherwise 1147 **/ 1148 static int ipr_is_same_device(struct ipr_resource_entry *res, 1149 struct ipr_config_table_entry_wrapper *cfgtew) 1150 { 1151 if (res->ioa_cfg->sis64) { 1152 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id, 1153 sizeof(cfgtew->u.cfgte64->dev_id)) && 1154 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1155 sizeof(cfgtew->u.cfgte64->lun))) { 1156 return 1; 1157 } 1158 } else { 1159 if (res->bus == cfgtew->u.cfgte->res_addr.bus && 1160 res->target == cfgtew->u.cfgte->res_addr.target && 1161 res->lun == cfgtew->u.cfgte->res_addr.lun) 1162 return 1; 1163 } 1164 1165 return 0; 1166 } 1167 1168 /** 1169 * ipr_format_res_path - Format the resource path for printing. 1170 * @res_path: resource path 1171 * @buf: buffer 1172 * 1173 * Return value: 1174 * pointer to buffer 1175 **/ 1176 static char *ipr_format_res_path(u8 *res_path, char *buffer, int len) 1177 { 1178 int i; 1179 char *p = buffer; 1180 1181 *p = '\0'; 1182 p += snprintf(p, buffer + len - p, "%02X", res_path[0]); 1183 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++) 1184 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]); 1185 1186 return buffer; 1187 } 1188 1189 /** 1190 * ipr_update_res_entry - Update the resource entry. 1191 * @res: resource entry struct 1192 * @cfgtew: config table entry wrapper struct 1193 * 1194 * Return value: 1195 * none 1196 **/ 1197 static void ipr_update_res_entry(struct ipr_resource_entry *res, 1198 struct ipr_config_table_entry_wrapper *cfgtew) 1199 { 1200 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1201 unsigned int proto; 1202 int new_path = 0; 1203 1204 if (res->ioa_cfg->sis64) { 1205 res->flags = cfgtew->u.cfgte64->flags; 1206 res->res_flags = cfgtew->u.cfgte64->res_flags; 1207 res->type = cfgtew->u.cfgte64->res_type; 1208 1209 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data, 1210 sizeof(struct ipr_std_inq_data)); 1211 1212 res->qmodel = IPR_QUEUEING_MODEL64(res); 1213 proto = cfgtew->u.cfgte64->proto; 1214 res->res_handle = cfgtew->u.cfgte64->res_handle; 1215 res->dev_id = cfgtew->u.cfgte64->dev_id; 1216 1217 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1218 sizeof(res->dev_lun.scsi_lun)); 1219 1220 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path, 1221 sizeof(res->res_path))) { 1222 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path, 1223 sizeof(res->res_path)); 1224 new_path = 1; 1225 } 1226 1227 if (res->sdev && new_path) 1228 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n", 1229 ipr_format_res_path(res->res_path, buffer, 1230 sizeof(buffer))); 1231 } else { 1232 res->flags = cfgtew->u.cfgte->flags; 1233 if (res->flags & IPR_IS_IOA_RESOURCE) 1234 res->type = IPR_RES_TYPE_IOAFP; 1235 else 1236 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f; 1237 1238 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data, 1239 sizeof(struct ipr_std_inq_data)); 1240 1241 res->qmodel = IPR_QUEUEING_MODEL(res); 1242 proto = cfgtew->u.cfgte->proto; 1243 res->res_handle = cfgtew->u.cfgte->res_handle; 1244 } 1245 1246 ipr_update_ata_class(res, proto); 1247 } 1248 1249 /** 1250 * ipr_clear_res_target - Clear the bit in the bit map representing the target 1251 * for the resource. 1252 * @res: resource entry struct 1253 * @cfgtew: config table entry wrapper struct 1254 * 1255 * Return value: 1256 * none 1257 **/ 1258 static void ipr_clear_res_target(struct ipr_resource_entry *res) 1259 { 1260 struct ipr_resource_entry *gscsi_res = NULL; 1261 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg; 1262 1263 if (!ioa_cfg->sis64) 1264 return; 1265 1266 if (res->bus == IPR_ARRAY_VIRTUAL_BUS) 1267 clear_bit(res->target, ioa_cfg->array_ids); 1268 else if (res->bus == IPR_VSET_VIRTUAL_BUS) 1269 clear_bit(res->target, ioa_cfg->vset_ids); 1270 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) { 1271 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) 1272 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res) 1273 return; 1274 clear_bit(res->target, ioa_cfg->target_ids); 1275 1276 } else if (res->bus == 0) 1277 clear_bit(res->target, ioa_cfg->target_ids); 1278 } 1279 1280 /** 1281 * ipr_handle_config_change - Handle a config change from the adapter 1282 * @ioa_cfg: ioa config struct 1283 * @hostrcb: hostrcb 1284 * 1285 * Return value: 1286 * none 1287 **/ 1288 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, 1289 struct ipr_hostrcb *hostrcb) 1290 { 1291 struct ipr_resource_entry *res = NULL; 1292 struct ipr_config_table_entry_wrapper cfgtew; 1293 __be32 cc_res_handle; 1294 1295 u32 is_ndn = 1; 1296 1297 if (ioa_cfg->sis64) { 1298 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64; 1299 cc_res_handle = cfgtew.u.cfgte64->res_handle; 1300 } else { 1301 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte; 1302 cc_res_handle = cfgtew.u.cfgte->res_handle; 1303 } 1304 1305 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1306 if (res->res_handle == cc_res_handle) { 1307 is_ndn = 0; 1308 break; 1309 } 1310 } 1311 1312 if (is_ndn) { 1313 if (list_empty(&ioa_cfg->free_res_q)) { 1314 ipr_send_hcam(ioa_cfg, 1315 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 1316 hostrcb); 1317 return; 1318 } 1319 1320 res = list_entry(ioa_cfg->free_res_q.next, 1321 struct ipr_resource_entry, queue); 1322 1323 list_del(&res->queue); 1324 ipr_init_res_entry(res, &cfgtew); 1325 list_add_tail(&res->queue, &ioa_cfg->used_res_q); 1326 } 1327 1328 ipr_update_res_entry(res, &cfgtew); 1329 1330 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { 1331 if (res->sdev) { 1332 res->del_from_ml = 1; 1333 res->res_handle = IPR_INVALID_RES_HANDLE; 1334 if (ioa_cfg->allow_ml_add_del) 1335 schedule_work(&ioa_cfg->work_q); 1336 } else { 1337 ipr_clear_res_target(res); 1338 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 1339 } 1340 } else if (!res->sdev || res->del_from_ml) { 1341 res->add_to_ml = 1; 1342 if (ioa_cfg->allow_ml_add_del) 1343 schedule_work(&ioa_cfg->work_q); 1344 } 1345 1346 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 1347 } 1348 1349 /** 1350 * ipr_process_ccn - Op done function for a CCN. 1351 * @ipr_cmd: ipr command struct 1352 * 1353 * This function is the op done function for a configuration 1354 * change notification host controlled async from the adapter. 1355 * 1356 * Return value: 1357 * none 1358 **/ 1359 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) 1360 { 1361 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1362 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 1363 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 1364 1365 list_del(&hostrcb->queue); 1366 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 1367 1368 if (ioasc) { 1369 if (ioasc != IPR_IOASC_IOA_WAS_RESET) 1370 dev_err(&ioa_cfg->pdev->dev, 1371 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 1372 1373 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 1374 } else { 1375 ipr_handle_config_change(ioa_cfg, hostrcb); 1376 } 1377 } 1378 1379 /** 1380 * strip_and_pad_whitespace - Strip and pad trailing whitespace. 1381 * @i: index into buffer 1382 * @buf: string to modify 1383 * 1384 * This function will strip all trailing whitespace, pad the end 1385 * of the string with a single space, and NULL terminate the string. 1386 * 1387 * Return value: 1388 * new length of string 1389 **/ 1390 static int strip_and_pad_whitespace(int i, char *buf) 1391 { 1392 while (i && buf[i] == ' ') 1393 i--; 1394 buf[i+1] = ' '; 1395 buf[i+2] = '\0'; 1396 return i + 2; 1397 } 1398 1399 /** 1400 * ipr_log_vpd_compact - Log the passed extended VPD compactly. 1401 * @prefix: string to print at start of printk 1402 * @hostrcb: hostrcb pointer 1403 * @vpd: vendor/product id/sn struct 1404 * 1405 * Return value: 1406 * none 1407 **/ 1408 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 1409 struct ipr_vpd *vpd) 1410 { 1411 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3]; 1412 int i = 0; 1413 1414 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 1415 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer); 1416 1417 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN); 1418 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer); 1419 1420 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN); 1421 buffer[IPR_SERIAL_NUM_LEN + i] = '\0'; 1422 1423 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer); 1424 } 1425 1426 /** 1427 * ipr_log_vpd - Log the passed VPD to the error log. 1428 * @vpd: vendor/product id/sn struct 1429 * 1430 * Return value: 1431 * none 1432 **/ 1433 static void ipr_log_vpd(struct ipr_vpd *vpd) 1434 { 1435 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN 1436 + IPR_SERIAL_NUM_LEN]; 1437 1438 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 1439 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id, 1440 IPR_PROD_ID_LEN); 1441 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; 1442 ipr_err("Vendor/Product ID: %s\n", buffer); 1443 1444 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN); 1445 buffer[IPR_SERIAL_NUM_LEN] = '\0'; 1446 ipr_err(" Serial Number: %s\n", buffer); 1447 } 1448 1449 /** 1450 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly. 1451 * @prefix: string to print at start of printk 1452 * @hostrcb: hostrcb pointer 1453 * @vpd: vendor/product id/sn/wwn struct 1454 * 1455 * Return value: 1456 * none 1457 **/ 1458 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 1459 struct ipr_ext_vpd *vpd) 1460 { 1461 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd); 1462 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix, 1463 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1])); 1464 } 1465 1466 /** 1467 * ipr_log_ext_vpd - Log the passed extended VPD to the error log. 1468 * @vpd: vendor/product id/sn/wwn struct 1469 * 1470 * Return value: 1471 * none 1472 **/ 1473 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd) 1474 { 1475 ipr_log_vpd(&vpd->vpd); 1476 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]), 1477 be32_to_cpu(vpd->wwid[1])); 1478 } 1479 1480 /** 1481 * ipr_log_enhanced_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_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1489 struct ipr_hostrcb *hostrcb) 1490 { 1491 struct ipr_hostrcb_type_12_error *error; 1492 1493 if (ioa_cfg->sis64) 1494 error = &hostrcb->hcam.u.error64.u.type_12_error; 1495 else 1496 error = &hostrcb->hcam.u.error.u.type_12_error; 1497 1498 ipr_err("-----Current Configuration-----\n"); 1499 ipr_err("Cache Directory Card Information:\n"); 1500 ipr_log_ext_vpd(&error->ioa_vpd); 1501 ipr_err("Adapter Card Information:\n"); 1502 ipr_log_ext_vpd(&error->cfc_vpd); 1503 1504 ipr_err("-----Expected Configuration-----\n"); 1505 ipr_err("Cache Directory Card Information:\n"); 1506 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd); 1507 ipr_err("Adapter Card Information:\n"); 1508 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd); 1509 1510 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1511 be32_to_cpu(error->ioa_data[0]), 1512 be32_to_cpu(error->ioa_data[1]), 1513 be32_to_cpu(error->ioa_data[2])); 1514 } 1515 1516 /** 1517 * ipr_log_cache_error - Log a cache error. 1518 * @ioa_cfg: ioa config struct 1519 * @hostrcb: hostrcb struct 1520 * 1521 * Return value: 1522 * none 1523 **/ 1524 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1525 struct ipr_hostrcb *hostrcb) 1526 { 1527 struct ipr_hostrcb_type_02_error *error = 1528 &hostrcb->hcam.u.error.u.type_02_error; 1529 1530 ipr_err("-----Current Configuration-----\n"); 1531 ipr_err("Cache Directory Card Information:\n"); 1532 ipr_log_vpd(&error->ioa_vpd); 1533 ipr_err("Adapter Card Information:\n"); 1534 ipr_log_vpd(&error->cfc_vpd); 1535 1536 ipr_err("-----Expected Configuration-----\n"); 1537 ipr_err("Cache Directory Card Information:\n"); 1538 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd); 1539 ipr_err("Adapter Card Information:\n"); 1540 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd); 1541 1542 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1543 be32_to_cpu(error->ioa_data[0]), 1544 be32_to_cpu(error->ioa_data[1]), 1545 be32_to_cpu(error->ioa_data[2])); 1546 } 1547 1548 /** 1549 * ipr_log_enhanced_config_error - Log a configuration error. 1550 * @ioa_cfg: ioa config struct 1551 * @hostrcb: hostrcb struct 1552 * 1553 * Return value: 1554 * none 1555 **/ 1556 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg, 1557 struct ipr_hostrcb *hostrcb) 1558 { 1559 int errors_logged, i; 1560 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry; 1561 struct ipr_hostrcb_type_13_error *error; 1562 1563 error = &hostrcb->hcam.u.error.u.type_13_error; 1564 errors_logged = be32_to_cpu(error->errors_logged); 1565 1566 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1567 be32_to_cpu(error->errors_detected), errors_logged); 1568 1569 dev_entry = error->dev; 1570 1571 for (i = 0; i < errors_logged; i++, dev_entry++) { 1572 ipr_err_separator; 1573 1574 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1575 ipr_log_ext_vpd(&dev_entry->vpd); 1576 1577 ipr_err("-----New Device Information-----\n"); 1578 ipr_log_ext_vpd(&dev_entry->new_vpd); 1579 1580 ipr_err("Cache Directory Card Information:\n"); 1581 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1582 1583 ipr_err("Adapter Card Information:\n"); 1584 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1585 } 1586 } 1587 1588 /** 1589 * ipr_log_sis64_config_error - Log a device error. 1590 * @ioa_cfg: ioa config struct 1591 * @hostrcb: hostrcb struct 1592 * 1593 * Return value: 1594 * none 1595 **/ 1596 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg, 1597 struct ipr_hostrcb *hostrcb) 1598 { 1599 int errors_logged, i; 1600 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry; 1601 struct ipr_hostrcb_type_23_error *error; 1602 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1603 1604 error = &hostrcb->hcam.u.error64.u.type_23_error; 1605 errors_logged = be32_to_cpu(error->errors_logged); 1606 1607 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1608 be32_to_cpu(error->errors_detected), errors_logged); 1609 1610 dev_entry = error->dev; 1611 1612 for (i = 0; i < errors_logged; i++, dev_entry++) { 1613 ipr_err_separator; 1614 1615 ipr_err("Device %d : %s", i + 1, 1616 ipr_format_res_path(dev_entry->res_path, buffer, 1617 sizeof(buffer))); 1618 ipr_log_ext_vpd(&dev_entry->vpd); 1619 1620 ipr_err("-----New Device Information-----\n"); 1621 ipr_log_ext_vpd(&dev_entry->new_vpd); 1622 1623 ipr_err("Cache Directory Card Information:\n"); 1624 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1625 1626 ipr_err("Adapter Card Information:\n"); 1627 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1628 } 1629 } 1630 1631 /** 1632 * ipr_log_config_error - Log a configuration error. 1633 * @ioa_cfg: ioa config struct 1634 * @hostrcb: hostrcb struct 1635 * 1636 * Return value: 1637 * none 1638 **/ 1639 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, 1640 struct ipr_hostrcb *hostrcb) 1641 { 1642 int errors_logged, i; 1643 struct ipr_hostrcb_device_data_entry *dev_entry; 1644 struct ipr_hostrcb_type_03_error *error; 1645 1646 error = &hostrcb->hcam.u.error.u.type_03_error; 1647 errors_logged = be32_to_cpu(error->errors_logged); 1648 1649 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1650 be32_to_cpu(error->errors_detected), errors_logged); 1651 1652 dev_entry = error->dev; 1653 1654 for (i = 0; i < errors_logged; i++, dev_entry++) { 1655 ipr_err_separator; 1656 1657 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1658 ipr_log_vpd(&dev_entry->vpd); 1659 1660 ipr_err("-----New Device Information-----\n"); 1661 ipr_log_vpd(&dev_entry->new_vpd); 1662 1663 ipr_err("Cache Directory Card Information:\n"); 1664 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd); 1665 1666 ipr_err("Adapter Card Information:\n"); 1667 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd); 1668 1669 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", 1670 be32_to_cpu(dev_entry->ioa_data[0]), 1671 be32_to_cpu(dev_entry->ioa_data[1]), 1672 be32_to_cpu(dev_entry->ioa_data[2]), 1673 be32_to_cpu(dev_entry->ioa_data[3]), 1674 be32_to_cpu(dev_entry->ioa_data[4])); 1675 } 1676 } 1677 1678 /** 1679 * ipr_log_enhanced_array_error - Log an array configuration error. 1680 * @ioa_cfg: ioa config struct 1681 * @hostrcb: hostrcb struct 1682 * 1683 * Return value: 1684 * none 1685 **/ 1686 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg, 1687 struct ipr_hostrcb *hostrcb) 1688 { 1689 int i, num_entries; 1690 struct ipr_hostrcb_type_14_error *error; 1691 struct ipr_hostrcb_array_data_entry_enhanced *array_entry; 1692 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1693 1694 error = &hostrcb->hcam.u.error.u.type_14_error; 1695 1696 ipr_err_separator; 1697 1698 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1699 error->protection_level, 1700 ioa_cfg->host->host_no, 1701 error->last_func_vset_res_addr.bus, 1702 error->last_func_vset_res_addr.target, 1703 error->last_func_vset_res_addr.lun); 1704 1705 ipr_err_separator; 1706 1707 array_entry = error->array_member; 1708 num_entries = min_t(u32, be32_to_cpu(error->num_entries), 1709 ARRAY_SIZE(error->array_member)); 1710 1711 for (i = 0; i < num_entries; i++, array_entry++) { 1712 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1713 continue; 1714 1715 if (be32_to_cpu(error->exposed_mode_adn) == i) 1716 ipr_err("Exposed Array Member %d:\n", i); 1717 else 1718 ipr_err("Array Member %d:\n", i); 1719 1720 ipr_log_ext_vpd(&array_entry->vpd); 1721 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1722 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1723 "Expected Location"); 1724 1725 ipr_err_separator; 1726 } 1727 } 1728 1729 /** 1730 * ipr_log_array_error - Log an array configuration error. 1731 * @ioa_cfg: ioa config struct 1732 * @hostrcb: hostrcb struct 1733 * 1734 * Return value: 1735 * none 1736 **/ 1737 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, 1738 struct ipr_hostrcb *hostrcb) 1739 { 1740 int i; 1741 struct ipr_hostrcb_type_04_error *error; 1742 struct ipr_hostrcb_array_data_entry *array_entry; 1743 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1744 1745 error = &hostrcb->hcam.u.error.u.type_04_error; 1746 1747 ipr_err_separator; 1748 1749 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1750 error->protection_level, 1751 ioa_cfg->host->host_no, 1752 error->last_func_vset_res_addr.bus, 1753 error->last_func_vset_res_addr.target, 1754 error->last_func_vset_res_addr.lun); 1755 1756 ipr_err_separator; 1757 1758 array_entry = error->array_member; 1759 1760 for (i = 0; i < 18; i++) { 1761 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1762 continue; 1763 1764 if (be32_to_cpu(error->exposed_mode_adn) == i) 1765 ipr_err("Exposed Array Member %d:\n", i); 1766 else 1767 ipr_err("Array Member %d:\n", i); 1768 1769 ipr_log_vpd(&array_entry->vpd); 1770 1771 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1772 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1773 "Expected Location"); 1774 1775 ipr_err_separator; 1776 1777 if (i == 9) 1778 array_entry = error->array_member2; 1779 else 1780 array_entry++; 1781 } 1782 } 1783 1784 /** 1785 * ipr_log_hex_data - Log additional hex IOA error data. 1786 * @ioa_cfg: ioa config struct 1787 * @data: IOA error data 1788 * @len: data length 1789 * 1790 * Return value: 1791 * none 1792 **/ 1793 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len) 1794 { 1795 int i; 1796 1797 if (len == 0) 1798 return; 1799 1800 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 1801 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP); 1802 1803 for (i = 0; i < len / 4; i += 4) { 1804 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 1805 be32_to_cpu(data[i]), 1806 be32_to_cpu(data[i+1]), 1807 be32_to_cpu(data[i+2]), 1808 be32_to_cpu(data[i+3])); 1809 } 1810 } 1811 1812 /** 1813 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error. 1814 * @ioa_cfg: ioa config struct 1815 * @hostrcb: hostrcb struct 1816 * 1817 * Return value: 1818 * none 1819 **/ 1820 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1821 struct ipr_hostrcb *hostrcb) 1822 { 1823 struct ipr_hostrcb_type_17_error *error; 1824 1825 if (ioa_cfg->sis64) 1826 error = &hostrcb->hcam.u.error64.u.type_17_error; 1827 else 1828 error = &hostrcb->hcam.u.error.u.type_17_error; 1829 1830 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1831 strim(error->failure_reason); 1832 1833 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 1834 be32_to_cpu(hostrcb->hcam.u.error.prc)); 1835 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd); 1836 ipr_log_hex_data(ioa_cfg, error->data, 1837 be32_to_cpu(hostrcb->hcam.length) - 1838 (offsetof(struct ipr_hostrcb_error, u) + 1839 offsetof(struct ipr_hostrcb_type_17_error, data))); 1840 } 1841 1842 /** 1843 * ipr_log_dual_ioa_error - Log a dual adapter error. 1844 * @ioa_cfg: ioa config struct 1845 * @hostrcb: hostrcb struct 1846 * 1847 * Return value: 1848 * none 1849 **/ 1850 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1851 struct ipr_hostrcb *hostrcb) 1852 { 1853 struct ipr_hostrcb_type_07_error *error; 1854 1855 error = &hostrcb->hcam.u.error.u.type_07_error; 1856 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1857 strim(error->failure_reason); 1858 1859 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 1860 be32_to_cpu(hostrcb->hcam.u.error.prc)); 1861 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd); 1862 ipr_log_hex_data(ioa_cfg, error->data, 1863 be32_to_cpu(hostrcb->hcam.length) - 1864 (offsetof(struct ipr_hostrcb_error, u) + 1865 offsetof(struct ipr_hostrcb_type_07_error, data))); 1866 } 1867 1868 static const struct { 1869 u8 active; 1870 char *desc; 1871 } path_active_desc[] = { 1872 { IPR_PATH_NO_INFO, "Path" }, 1873 { IPR_PATH_ACTIVE, "Active path" }, 1874 { IPR_PATH_NOT_ACTIVE, "Inactive path" } 1875 }; 1876 1877 static const struct { 1878 u8 state; 1879 char *desc; 1880 } path_state_desc[] = { 1881 { IPR_PATH_STATE_NO_INFO, "has no path state information available" }, 1882 { IPR_PATH_HEALTHY, "is healthy" }, 1883 { IPR_PATH_DEGRADED, "is degraded" }, 1884 { IPR_PATH_FAILED, "is failed" } 1885 }; 1886 1887 /** 1888 * ipr_log_fabric_path - Log a fabric path error 1889 * @hostrcb: hostrcb struct 1890 * @fabric: fabric descriptor 1891 * 1892 * Return value: 1893 * none 1894 **/ 1895 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb, 1896 struct ipr_hostrcb_fabric_desc *fabric) 1897 { 1898 int i, j; 1899 u8 path_state = fabric->path_state; 1900 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 1901 u8 state = path_state & IPR_PATH_STATE_MASK; 1902 1903 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 1904 if (path_active_desc[i].active != active) 1905 continue; 1906 1907 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 1908 if (path_state_desc[j].state != state) 1909 continue; 1910 1911 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) { 1912 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n", 1913 path_active_desc[i].desc, path_state_desc[j].desc, 1914 fabric->ioa_port); 1915 } else if (fabric->cascaded_expander == 0xff) { 1916 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n", 1917 path_active_desc[i].desc, path_state_desc[j].desc, 1918 fabric->ioa_port, fabric->phy); 1919 } else if (fabric->phy == 0xff) { 1920 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n", 1921 path_active_desc[i].desc, path_state_desc[j].desc, 1922 fabric->ioa_port, fabric->cascaded_expander); 1923 } else { 1924 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n", 1925 path_active_desc[i].desc, path_state_desc[j].desc, 1926 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1927 } 1928 return; 1929 } 1930 } 1931 1932 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state, 1933 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1934 } 1935 1936 /** 1937 * ipr_log64_fabric_path - Log a fabric path error 1938 * @hostrcb: hostrcb struct 1939 * @fabric: fabric descriptor 1940 * 1941 * Return value: 1942 * none 1943 **/ 1944 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb, 1945 struct ipr_hostrcb64_fabric_desc *fabric) 1946 { 1947 int i, j; 1948 u8 path_state = fabric->path_state; 1949 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 1950 u8 state = path_state & IPR_PATH_STATE_MASK; 1951 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1952 1953 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 1954 if (path_active_desc[i].active != active) 1955 continue; 1956 1957 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 1958 if (path_state_desc[j].state != state) 1959 continue; 1960 1961 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n", 1962 path_active_desc[i].desc, path_state_desc[j].desc, 1963 ipr_format_res_path(fabric->res_path, buffer, 1964 sizeof(buffer))); 1965 return; 1966 } 1967 } 1968 1969 ipr_err("Path state=%02X Resource Path=%s\n", path_state, 1970 ipr_format_res_path(fabric->res_path, buffer, sizeof(buffer))); 1971 } 1972 1973 static const struct { 1974 u8 type; 1975 char *desc; 1976 } path_type_desc[] = { 1977 { IPR_PATH_CFG_IOA_PORT, "IOA port" }, 1978 { IPR_PATH_CFG_EXP_PORT, "Expander port" }, 1979 { IPR_PATH_CFG_DEVICE_PORT, "Device port" }, 1980 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" } 1981 }; 1982 1983 static const struct { 1984 u8 status; 1985 char *desc; 1986 } path_status_desc[] = { 1987 { IPR_PATH_CFG_NO_PROB, "Functional" }, 1988 { IPR_PATH_CFG_DEGRADED, "Degraded" }, 1989 { IPR_PATH_CFG_FAILED, "Failed" }, 1990 { IPR_PATH_CFG_SUSPECT, "Suspect" }, 1991 { IPR_PATH_NOT_DETECTED, "Missing" }, 1992 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" } 1993 }; 1994 1995 static const char *link_rate[] = { 1996 "unknown", 1997 "disabled", 1998 "phy reset problem", 1999 "spinup hold", 2000 "port selector", 2001 "unknown", 2002 "unknown", 2003 "unknown", 2004 "1.5Gbps", 2005 "3.0Gbps", 2006 "unknown", 2007 "unknown", 2008 "unknown", 2009 "unknown", 2010 "unknown", 2011 "unknown" 2012 }; 2013 2014 /** 2015 * ipr_log_path_elem - Log a fabric path element. 2016 * @hostrcb: hostrcb struct 2017 * @cfg: fabric path element struct 2018 * 2019 * Return value: 2020 * none 2021 **/ 2022 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb, 2023 struct ipr_hostrcb_config_element *cfg) 2024 { 2025 int i, j; 2026 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 2027 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 2028 2029 if (type == IPR_PATH_CFG_NOT_EXIST) 2030 return; 2031 2032 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 2033 if (path_type_desc[i].type != type) 2034 continue; 2035 2036 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 2037 if (path_status_desc[j].status != status) 2038 continue; 2039 2040 if (type == IPR_PATH_CFG_IOA_PORT) { 2041 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n", 2042 path_status_desc[j].desc, path_type_desc[i].desc, 2043 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2044 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2045 } else { 2046 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) { 2047 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n", 2048 path_status_desc[j].desc, path_type_desc[i].desc, 2049 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2050 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2051 } else if (cfg->cascaded_expander == 0xff) { 2052 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, " 2053 "WWN=%08X%08X\n", path_status_desc[j].desc, 2054 path_type_desc[i].desc, cfg->phy, 2055 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2056 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2057 } else if (cfg->phy == 0xff) { 2058 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, " 2059 "WWN=%08X%08X\n", path_status_desc[j].desc, 2060 path_type_desc[i].desc, cfg->cascaded_expander, 2061 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2062 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2063 } else { 2064 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s " 2065 "WWN=%08X%08X\n", path_status_desc[j].desc, 2066 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy, 2067 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2068 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2069 } 2070 } 2071 return; 2072 } 2073 } 2074 2075 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s " 2076 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy, 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 } 2080 2081 /** 2082 * ipr_log64_path_elem - Log a fabric path element. 2083 * @hostrcb: hostrcb struct 2084 * @cfg: fabric path element struct 2085 * 2086 * Return value: 2087 * none 2088 **/ 2089 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb, 2090 struct ipr_hostrcb64_config_element *cfg) 2091 { 2092 int i, j; 2093 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK; 2094 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 2095 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 2096 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2097 2098 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64) 2099 return; 2100 2101 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 2102 if (path_type_desc[i].type != type) 2103 continue; 2104 2105 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 2106 if (path_status_desc[j].status != status) 2107 continue; 2108 2109 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n", 2110 path_status_desc[j].desc, path_type_desc[i].desc, 2111 ipr_format_res_path(cfg->res_path, buffer, 2112 sizeof(buffer)), 2113 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2114 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2115 return; 2116 } 2117 } 2118 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s " 2119 "WWN=%08X%08X\n", cfg->type_status, 2120 ipr_format_res_path(cfg->res_path, buffer, sizeof(buffer)), 2121 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2122 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2123 } 2124 2125 /** 2126 * ipr_log_fabric_error - Log a fabric error. 2127 * @ioa_cfg: ioa config struct 2128 * @hostrcb: hostrcb struct 2129 * 2130 * Return value: 2131 * none 2132 **/ 2133 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 2134 struct ipr_hostrcb *hostrcb) 2135 { 2136 struct ipr_hostrcb_type_20_error *error; 2137 struct ipr_hostrcb_fabric_desc *fabric; 2138 struct ipr_hostrcb_config_element *cfg; 2139 int i, add_len; 2140 2141 error = &hostrcb->hcam.u.error.u.type_20_error; 2142 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2143 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 2144 2145 add_len = be32_to_cpu(hostrcb->hcam.length) - 2146 (offsetof(struct ipr_hostrcb_error, u) + 2147 offsetof(struct ipr_hostrcb_type_20_error, desc)); 2148 2149 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 2150 ipr_log_fabric_path(hostrcb, fabric); 2151 for_each_fabric_cfg(fabric, cfg) 2152 ipr_log_path_elem(hostrcb, cfg); 2153 2154 add_len -= be16_to_cpu(fabric->length); 2155 fabric = (struct ipr_hostrcb_fabric_desc *) 2156 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 2157 } 2158 2159 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len); 2160 } 2161 2162 /** 2163 * ipr_log_sis64_array_error - Log a sis64 array error. 2164 * @ioa_cfg: ioa config struct 2165 * @hostrcb: hostrcb struct 2166 * 2167 * Return value: 2168 * none 2169 **/ 2170 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg, 2171 struct ipr_hostrcb *hostrcb) 2172 { 2173 int i, num_entries; 2174 struct ipr_hostrcb_type_24_error *error; 2175 struct ipr_hostrcb64_array_data_entry *array_entry; 2176 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2177 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 2178 2179 error = &hostrcb->hcam.u.error64.u.type_24_error; 2180 2181 ipr_err_separator; 2182 2183 ipr_err("RAID %s Array Configuration: %s\n", 2184 error->protection_level, 2185 ipr_format_res_path(error->last_res_path, buffer, sizeof(buffer))); 2186 2187 ipr_err_separator; 2188 2189 array_entry = error->array_member; 2190 num_entries = min_t(u32, error->num_entries, 2191 ARRAY_SIZE(error->array_member)); 2192 2193 for (i = 0; i < num_entries; i++, array_entry++) { 2194 2195 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 2196 continue; 2197 2198 if (error->exposed_mode_adn == i) 2199 ipr_err("Exposed Array Member %d:\n", i); 2200 else 2201 ipr_err("Array Member %d:\n", i); 2202 2203 ipr_err("Array Member %d:\n", i); 2204 ipr_log_ext_vpd(&array_entry->vpd); 2205 ipr_err("Current Location: %s\n", 2206 ipr_format_res_path(array_entry->res_path, buffer, 2207 sizeof(buffer))); 2208 ipr_err("Expected Location: %s\n", 2209 ipr_format_res_path(array_entry->expected_res_path, 2210 buffer, sizeof(buffer))); 2211 2212 ipr_err_separator; 2213 } 2214 } 2215 2216 /** 2217 * ipr_log_sis64_fabric_error - Log a sis64 fabric error. 2218 * @ioa_cfg: ioa config struct 2219 * @hostrcb: hostrcb struct 2220 * 2221 * Return value: 2222 * none 2223 **/ 2224 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 2225 struct ipr_hostrcb *hostrcb) 2226 { 2227 struct ipr_hostrcb_type_30_error *error; 2228 struct ipr_hostrcb64_fabric_desc *fabric; 2229 struct ipr_hostrcb64_config_element *cfg; 2230 int i, add_len; 2231 2232 error = &hostrcb->hcam.u.error64.u.type_30_error; 2233 2234 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2235 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 2236 2237 add_len = be32_to_cpu(hostrcb->hcam.length) - 2238 (offsetof(struct ipr_hostrcb64_error, u) + 2239 offsetof(struct ipr_hostrcb_type_30_error, desc)); 2240 2241 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 2242 ipr_log64_fabric_path(hostrcb, fabric); 2243 for_each_fabric_cfg(fabric, cfg) 2244 ipr_log64_path_elem(hostrcb, cfg); 2245 2246 add_len -= be16_to_cpu(fabric->length); 2247 fabric = (struct ipr_hostrcb64_fabric_desc *) 2248 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 2249 } 2250 2251 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len); 2252 } 2253 2254 /** 2255 * ipr_log_generic_error - Log an adapter error. 2256 * @ioa_cfg: ioa config struct 2257 * @hostrcb: hostrcb struct 2258 * 2259 * Return value: 2260 * none 2261 **/ 2262 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, 2263 struct ipr_hostrcb *hostrcb) 2264 { 2265 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data, 2266 be32_to_cpu(hostrcb->hcam.length)); 2267 } 2268 2269 /** 2270 * ipr_get_error - Find the specfied IOASC in the ipr_error_table. 2271 * @ioasc: IOASC 2272 * 2273 * This function will return the index of into the ipr_error_table 2274 * for the specified IOASC. If the IOASC is not in the table, 2275 * 0 will be returned, which points to the entry used for unknown errors. 2276 * 2277 * Return value: 2278 * index into the ipr_error_table 2279 **/ 2280 static u32 ipr_get_error(u32 ioasc) 2281 { 2282 int i; 2283 2284 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) 2285 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK)) 2286 return i; 2287 2288 return 0; 2289 } 2290 2291 /** 2292 * ipr_handle_log_data - Log an adapter error. 2293 * @ioa_cfg: ioa config struct 2294 * @hostrcb: hostrcb struct 2295 * 2296 * This function logs an adapter error to the system. 2297 * 2298 * Return value: 2299 * none 2300 **/ 2301 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 2302 struct ipr_hostrcb *hostrcb) 2303 { 2304 u32 ioasc; 2305 int error_index; 2306 2307 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) 2308 return; 2309 2310 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) 2311 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); 2312 2313 if (ioa_cfg->sis64) 2314 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc); 2315 else 2316 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 2317 2318 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET || 2319 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) { 2320 /* Tell the midlayer we had a bus reset so it will handle the UA properly */ 2321 scsi_report_bus_reset(ioa_cfg->host, 2322 hostrcb->hcam.u.error.fd_res_addr.bus); 2323 } 2324 2325 error_index = ipr_get_error(ioasc); 2326 2327 if (!ipr_error_table[error_index].log_hcam) 2328 return; 2329 2330 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error); 2331 2332 /* Set indication we have logged an error */ 2333 ioa_cfg->errors_logged++; 2334 2335 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam) 2336 return; 2337 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw)) 2338 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw)); 2339 2340 switch (hostrcb->hcam.overlay_id) { 2341 case IPR_HOST_RCB_OVERLAY_ID_2: 2342 ipr_log_cache_error(ioa_cfg, hostrcb); 2343 break; 2344 case IPR_HOST_RCB_OVERLAY_ID_3: 2345 ipr_log_config_error(ioa_cfg, hostrcb); 2346 break; 2347 case IPR_HOST_RCB_OVERLAY_ID_4: 2348 case IPR_HOST_RCB_OVERLAY_ID_6: 2349 ipr_log_array_error(ioa_cfg, hostrcb); 2350 break; 2351 case IPR_HOST_RCB_OVERLAY_ID_7: 2352 ipr_log_dual_ioa_error(ioa_cfg, hostrcb); 2353 break; 2354 case IPR_HOST_RCB_OVERLAY_ID_12: 2355 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb); 2356 break; 2357 case IPR_HOST_RCB_OVERLAY_ID_13: 2358 ipr_log_enhanced_config_error(ioa_cfg, hostrcb); 2359 break; 2360 case IPR_HOST_RCB_OVERLAY_ID_14: 2361 case IPR_HOST_RCB_OVERLAY_ID_16: 2362 ipr_log_enhanced_array_error(ioa_cfg, hostrcb); 2363 break; 2364 case IPR_HOST_RCB_OVERLAY_ID_17: 2365 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb); 2366 break; 2367 case IPR_HOST_RCB_OVERLAY_ID_20: 2368 ipr_log_fabric_error(ioa_cfg, hostrcb); 2369 break; 2370 case IPR_HOST_RCB_OVERLAY_ID_23: 2371 ipr_log_sis64_config_error(ioa_cfg, hostrcb); 2372 break; 2373 case IPR_HOST_RCB_OVERLAY_ID_24: 2374 case IPR_HOST_RCB_OVERLAY_ID_26: 2375 ipr_log_sis64_array_error(ioa_cfg, hostrcb); 2376 break; 2377 case IPR_HOST_RCB_OVERLAY_ID_30: 2378 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb); 2379 break; 2380 case IPR_HOST_RCB_OVERLAY_ID_1: 2381 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: 2382 default: 2383 ipr_log_generic_error(ioa_cfg, hostrcb); 2384 break; 2385 } 2386 } 2387 2388 /** 2389 * ipr_process_error - Op done function for an adapter error log. 2390 * @ipr_cmd: ipr command struct 2391 * 2392 * This function is the op done function for an error log host 2393 * controlled async from the adapter. It will log the error and 2394 * send the HCAM back to the adapter. 2395 * 2396 * Return value: 2397 * none 2398 **/ 2399 static void ipr_process_error(struct ipr_cmnd *ipr_cmd) 2400 { 2401 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2402 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 2403 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 2404 u32 fd_ioasc; 2405 2406 if (ioa_cfg->sis64) 2407 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc); 2408 else 2409 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 2410 2411 list_del(&hostrcb->queue); 2412 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 2413 2414 if (!ioasc) { 2415 ipr_handle_log_data(ioa_cfg, hostrcb); 2416 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED) 2417 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV); 2418 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) { 2419 dev_err(&ioa_cfg->pdev->dev, 2420 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 2421 } 2422 2423 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 2424 } 2425 2426 /** 2427 * ipr_timeout - An internally generated op has timed out. 2428 * @ipr_cmd: ipr command struct 2429 * 2430 * This function blocks host requests and initiates an 2431 * adapter reset. 2432 * 2433 * Return value: 2434 * none 2435 **/ 2436 static void ipr_timeout(struct ipr_cmnd *ipr_cmd) 2437 { 2438 unsigned long lock_flags = 0; 2439 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2440 2441 ENTER; 2442 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2443 2444 ioa_cfg->errors_logged++; 2445 dev_err(&ioa_cfg->pdev->dev, 2446 "Adapter being reset due to command timeout.\n"); 2447 2448 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 2449 ioa_cfg->sdt_state = GET_DUMP; 2450 2451 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) 2452 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2453 2454 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2455 LEAVE; 2456 } 2457 2458 /** 2459 * ipr_oper_timeout - Adapter timed out transitioning to operational 2460 * @ipr_cmd: ipr command struct 2461 * 2462 * This function blocks host requests and initiates an 2463 * adapter reset. 2464 * 2465 * Return value: 2466 * none 2467 **/ 2468 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) 2469 { 2470 unsigned long lock_flags = 0; 2471 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2472 2473 ENTER; 2474 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2475 2476 ioa_cfg->errors_logged++; 2477 dev_err(&ioa_cfg->pdev->dev, 2478 "Adapter timed out transitioning to operational.\n"); 2479 2480 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 2481 ioa_cfg->sdt_state = GET_DUMP; 2482 2483 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { 2484 if (ipr_fastfail) 2485 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 2486 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2487 } 2488 2489 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2490 LEAVE; 2491 } 2492 2493 /** 2494 * ipr_reset_reload - Reset/Reload the IOA 2495 * @ioa_cfg: ioa config struct 2496 * @shutdown_type: shutdown type 2497 * 2498 * This function resets the adapter and re-initializes it. 2499 * This function assumes that all new host commands have been stopped. 2500 * Return value: 2501 * SUCCESS / FAILED 2502 **/ 2503 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg, 2504 enum ipr_shutdown_type shutdown_type) 2505 { 2506 if (!ioa_cfg->in_reset_reload) 2507 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 2508 2509 spin_unlock_irq(ioa_cfg->host->host_lock); 2510 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2511 spin_lock_irq(ioa_cfg->host->host_lock); 2512 2513 /* If we got hit with a host reset while we were already resetting 2514 the adapter for some reason, and the reset failed. */ 2515 if (ioa_cfg->ioa_is_dead) { 2516 ipr_trace; 2517 return FAILED; 2518 } 2519 2520 return SUCCESS; 2521 } 2522 2523 /** 2524 * ipr_find_ses_entry - Find matching SES in SES table 2525 * @res: resource entry struct of SES 2526 * 2527 * Return value: 2528 * pointer to SES table entry / NULL on failure 2529 **/ 2530 static const struct ipr_ses_table_entry * 2531 ipr_find_ses_entry(struct ipr_resource_entry *res) 2532 { 2533 int i, j, matches; 2534 struct ipr_std_inq_vpids *vpids; 2535 const struct ipr_ses_table_entry *ste = ipr_ses_table; 2536 2537 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { 2538 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { 2539 if (ste->compare_product_id_byte[j] == 'X') { 2540 vpids = &res->std_inq_data.vpids; 2541 if (vpids->product_id[j] == ste->product_id[j]) 2542 matches++; 2543 else 2544 break; 2545 } else 2546 matches++; 2547 } 2548 2549 if (matches == IPR_PROD_ID_LEN) 2550 return ste; 2551 } 2552 2553 return NULL; 2554 } 2555 2556 /** 2557 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus 2558 * @ioa_cfg: ioa config struct 2559 * @bus: SCSI bus 2560 * @bus_width: bus width 2561 * 2562 * Return value: 2563 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz 2564 * For a 2-byte wide SCSI bus, the maximum transfer speed is 2565 * twice the maximum transfer rate (e.g. for a wide enabled bus, 2566 * max 160MHz = max 320MB/sec). 2567 **/ 2568 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) 2569 { 2570 struct ipr_resource_entry *res; 2571 const struct ipr_ses_table_entry *ste; 2572 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); 2573 2574 /* Loop through each config table entry in the config table buffer */ 2575 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2576 if (!(IPR_IS_SES_DEVICE(res->std_inq_data))) 2577 continue; 2578 2579 if (bus != res->bus) 2580 continue; 2581 2582 if (!(ste = ipr_find_ses_entry(res))) 2583 continue; 2584 2585 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); 2586 } 2587 2588 return max_xfer_rate; 2589 } 2590 2591 /** 2592 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA 2593 * @ioa_cfg: ioa config struct 2594 * @max_delay: max delay in micro-seconds to wait 2595 * 2596 * Waits for an IODEBUG ACK from the IOA, doing busy looping. 2597 * 2598 * Return value: 2599 * 0 on success / other on failure 2600 **/ 2601 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) 2602 { 2603 volatile u32 pcii_reg; 2604 int delay = 1; 2605 2606 /* Read interrupt reg until IOA signals IO Debug Acknowledge */ 2607 while (delay < max_delay) { 2608 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 2609 2610 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) 2611 return 0; 2612 2613 /* udelay cannot be used if delay is more than a few milliseconds */ 2614 if ((delay / 1000) > MAX_UDELAY_MS) 2615 mdelay(delay / 1000); 2616 else 2617 udelay(delay); 2618 2619 delay += delay; 2620 } 2621 return -EIO; 2622 } 2623 2624 /** 2625 * ipr_get_sis64_dump_data_section - Dump IOA memory 2626 * @ioa_cfg: ioa config struct 2627 * @start_addr: adapter address to dump 2628 * @dest: destination kernel buffer 2629 * @length_in_words: length to dump in 4 byte words 2630 * 2631 * Return value: 2632 * 0 on success 2633 **/ 2634 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg, 2635 u32 start_addr, 2636 __be32 *dest, u32 length_in_words) 2637 { 2638 int i; 2639 2640 for (i = 0; i < length_in_words; i++) { 2641 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg); 2642 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg)); 2643 dest++; 2644 } 2645 2646 return 0; 2647 } 2648 2649 /** 2650 * ipr_get_ldump_data_section - Dump IOA memory 2651 * @ioa_cfg: ioa config struct 2652 * @start_addr: adapter address to dump 2653 * @dest: destination kernel buffer 2654 * @length_in_words: length to dump in 4 byte words 2655 * 2656 * Return value: 2657 * 0 on success / -EIO on failure 2658 **/ 2659 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, 2660 u32 start_addr, 2661 __be32 *dest, u32 length_in_words) 2662 { 2663 volatile u32 temp_pcii_reg; 2664 int i, delay = 0; 2665 2666 if (ioa_cfg->sis64) 2667 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr, 2668 dest, length_in_words); 2669 2670 /* Write IOA interrupt reg starting LDUMP state */ 2671 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), 2672 ioa_cfg->regs.set_uproc_interrupt_reg32); 2673 2674 /* Wait for IO debug acknowledge */ 2675 if (ipr_wait_iodbg_ack(ioa_cfg, 2676 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { 2677 dev_err(&ioa_cfg->pdev->dev, 2678 "IOA dump long data transfer timeout\n"); 2679 return -EIO; 2680 } 2681 2682 /* Signal LDUMP interlocked - clear IO debug ack */ 2683 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2684 ioa_cfg->regs.clr_interrupt_reg); 2685 2686 /* Write Mailbox with starting address */ 2687 writel(start_addr, ioa_cfg->ioa_mailbox); 2688 2689 /* Signal address valid - clear IOA Reset alert */ 2690 writel(IPR_UPROCI_RESET_ALERT, 2691 ioa_cfg->regs.clr_uproc_interrupt_reg32); 2692 2693 for (i = 0; i < length_in_words; i++) { 2694 /* Wait for IO debug acknowledge */ 2695 if (ipr_wait_iodbg_ack(ioa_cfg, 2696 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { 2697 dev_err(&ioa_cfg->pdev->dev, 2698 "IOA dump short data transfer timeout\n"); 2699 return -EIO; 2700 } 2701 2702 /* Read data from mailbox and increment destination pointer */ 2703 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); 2704 dest++; 2705 2706 /* For all but the last word of data, signal data received */ 2707 if (i < (length_in_words - 1)) { 2708 /* Signal dump data received - Clear IO debug Ack */ 2709 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2710 ioa_cfg->regs.clr_interrupt_reg); 2711 } 2712 } 2713 2714 /* Signal end of block transfer. Set reset alert then clear IO debug ack */ 2715 writel(IPR_UPROCI_RESET_ALERT, 2716 ioa_cfg->regs.set_uproc_interrupt_reg32); 2717 2718 writel(IPR_UPROCI_IO_DEBUG_ALERT, 2719 ioa_cfg->regs.clr_uproc_interrupt_reg32); 2720 2721 /* Signal dump data received - Clear IO debug Ack */ 2722 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2723 ioa_cfg->regs.clr_interrupt_reg); 2724 2725 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ 2726 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { 2727 temp_pcii_reg = 2728 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); 2729 2730 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) 2731 return 0; 2732 2733 udelay(10); 2734 delay += 10; 2735 } 2736 2737 return 0; 2738 } 2739 2740 #ifdef CONFIG_SCSI_IPR_DUMP 2741 /** 2742 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer 2743 * @ioa_cfg: ioa config struct 2744 * @pci_address: adapter address 2745 * @length: length of data to copy 2746 * 2747 * Copy data from PCI adapter to kernel buffer. 2748 * Note: length MUST be a 4 byte multiple 2749 * Return value: 2750 * 0 on success / other on failure 2751 **/ 2752 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, 2753 unsigned long pci_address, u32 length) 2754 { 2755 int bytes_copied = 0; 2756 int cur_len, rc, rem_len, rem_page_len, max_dump_size; 2757 __be32 *page; 2758 unsigned long lock_flags = 0; 2759 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; 2760 2761 if (ioa_cfg->sis64) 2762 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE; 2763 else 2764 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE; 2765 2766 while (bytes_copied < length && 2767 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) { 2768 if (ioa_dump->page_offset >= PAGE_SIZE || 2769 ioa_dump->page_offset == 0) { 2770 page = (__be32 *)__get_free_page(GFP_ATOMIC); 2771 2772 if (!page) { 2773 ipr_trace; 2774 return bytes_copied; 2775 } 2776 2777 ioa_dump->page_offset = 0; 2778 ioa_dump->ioa_data[ioa_dump->next_page_index] = page; 2779 ioa_dump->next_page_index++; 2780 } else 2781 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; 2782 2783 rem_len = length - bytes_copied; 2784 rem_page_len = PAGE_SIZE - ioa_dump->page_offset; 2785 cur_len = min(rem_len, rem_page_len); 2786 2787 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2788 if (ioa_cfg->sdt_state == ABORT_DUMP) { 2789 rc = -EIO; 2790 } else { 2791 rc = ipr_get_ldump_data_section(ioa_cfg, 2792 pci_address + bytes_copied, 2793 &page[ioa_dump->page_offset / 4], 2794 (cur_len / sizeof(u32))); 2795 } 2796 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2797 2798 if (!rc) { 2799 ioa_dump->page_offset += cur_len; 2800 bytes_copied += cur_len; 2801 } else { 2802 ipr_trace; 2803 break; 2804 } 2805 schedule(); 2806 } 2807 2808 return bytes_copied; 2809 } 2810 2811 /** 2812 * ipr_init_dump_entry_hdr - Initialize a dump entry header. 2813 * @hdr: dump entry header struct 2814 * 2815 * Return value: 2816 * nothing 2817 **/ 2818 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) 2819 { 2820 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; 2821 hdr->num_elems = 1; 2822 hdr->offset = sizeof(*hdr); 2823 hdr->status = IPR_DUMP_STATUS_SUCCESS; 2824 } 2825 2826 /** 2827 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. 2828 * @ioa_cfg: ioa config struct 2829 * @driver_dump: driver dump struct 2830 * 2831 * Return value: 2832 * nothing 2833 **/ 2834 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, 2835 struct ipr_driver_dump *driver_dump) 2836 { 2837 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2838 2839 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); 2840 driver_dump->ioa_type_entry.hdr.len = 2841 sizeof(struct ipr_dump_ioa_type_entry) - 2842 sizeof(struct ipr_dump_entry_header); 2843 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2844 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; 2845 driver_dump->ioa_type_entry.type = ioa_cfg->type; 2846 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | 2847 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | 2848 ucode_vpd->minor_release[1]; 2849 driver_dump->hdr.num_entries++; 2850 } 2851 2852 /** 2853 * ipr_dump_version_data - Fill in the driver version in the dump. 2854 * @ioa_cfg: ioa config struct 2855 * @driver_dump: driver dump struct 2856 * 2857 * Return value: 2858 * nothing 2859 **/ 2860 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, 2861 struct ipr_driver_dump *driver_dump) 2862 { 2863 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); 2864 driver_dump->version_entry.hdr.len = 2865 sizeof(struct ipr_dump_version_entry) - 2866 sizeof(struct ipr_dump_entry_header); 2867 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2868 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; 2869 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); 2870 driver_dump->hdr.num_entries++; 2871 } 2872 2873 /** 2874 * ipr_dump_trace_data - Fill in the IOA trace in the dump. 2875 * @ioa_cfg: ioa config struct 2876 * @driver_dump: driver dump struct 2877 * 2878 * Return value: 2879 * nothing 2880 **/ 2881 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, 2882 struct ipr_driver_dump *driver_dump) 2883 { 2884 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); 2885 driver_dump->trace_entry.hdr.len = 2886 sizeof(struct ipr_dump_trace_entry) - 2887 sizeof(struct ipr_dump_entry_header); 2888 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2889 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; 2890 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); 2891 driver_dump->hdr.num_entries++; 2892 } 2893 2894 /** 2895 * ipr_dump_location_data - Fill in the IOA location in the dump. 2896 * @ioa_cfg: ioa config struct 2897 * @driver_dump: driver dump struct 2898 * 2899 * Return value: 2900 * nothing 2901 **/ 2902 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, 2903 struct ipr_driver_dump *driver_dump) 2904 { 2905 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); 2906 driver_dump->location_entry.hdr.len = 2907 sizeof(struct ipr_dump_location_entry) - 2908 sizeof(struct ipr_dump_entry_header); 2909 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2910 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; 2911 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev)); 2912 driver_dump->hdr.num_entries++; 2913 } 2914 2915 /** 2916 * ipr_get_ioa_dump - Perform a dump of the driver and adapter. 2917 * @ioa_cfg: ioa config struct 2918 * @dump: dump struct 2919 * 2920 * Return value: 2921 * nothing 2922 **/ 2923 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) 2924 { 2925 unsigned long start_addr, sdt_word; 2926 unsigned long lock_flags = 0; 2927 struct ipr_driver_dump *driver_dump = &dump->driver_dump; 2928 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; 2929 u32 num_entries, max_num_entries, start_off, end_off; 2930 u32 max_dump_size, bytes_to_copy, bytes_copied, rc; 2931 struct ipr_sdt *sdt; 2932 int valid = 1; 2933 int i; 2934 2935 ENTER; 2936 2937 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2938 2939 if (ioa_cfg->sdt_state != READ_DUMP) { 2940 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2941 return; 2942 } 2943 2944 if (ioa_cfg->sis64) { 2945 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2946 ssleep(IPR_DUMP_DELAY_SECONDS); 2947 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2948 } 2949 2950 start_addr = readl(ioa_cfg->ioa_mailbox); 2951 2952 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) { 2953 dev_err(&ioa_cfg->pdev->dev, 2954 "Invalid dump table format: %lx\n", start_addr); 2955 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2956 return; 2957 } 2958 2959 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); 2960 2961 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; 2962 2963 /* Initialize the overall dump header */ 2964 driver_dump->hdr.len = sizeof(struct ipr_driver_dump); 2965 driver_dump->hdr.num_entries = 1; 2966 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); 2967 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; 2968 driver_dump->hdr.os = IPR_DUMP_OS_LINUX; 2969 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; 2970 2971 ipr_dump_version_data(ioa_cfg, driver_dump); 2972 ipr_dump_location_data(ioa_cfg, driver_dump); 2973 ipr_dump_ioa_type_data(ioa_cfg, driver_dump); 2974 ipr_dump_trace_data(ioa_cfg, driver_dump); 2975 2976 /* Update dump_header */ 2977 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); 2978 2979 /* IOA Dump entry */ 2980 ipr_init_dump_entry_hdr(&ioa_dump->hdr); 2981 ioa_dump->hdr.len = 0; 2982 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2983 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; 2984 2985 /* First entries in sdt are actually a list of dump addresses and 2986 lengths to gather the real dump data. sdt represents the pointer 2987 to the ioa generated dump table. Dump data will be extracted based 2988 on entries in this table */ 2989 sdt = &ioa_dump->sdt; 2990 2991 if (ioa_cfg->sis64) { 2992 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES; 2993 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE; 2994 } else { 2995 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES; 2996 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE; 2997 } 2998 2999 bytes_to_copy = offsetof(struct ipr_sdt, entry) + 3000 (max_num_entries * sizeof(struct ipr_sdt_entry)); 3001 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, 3002 bytes_to_copy / sizeof(__be32)); 3003 3004 /* Smart Dump table is ready to use and the first entry is valid */ 3005 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) && 3006 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) { 3007 dev_err(&ioa_cfg->pdev->dev, 3008 "Dump of IOA failed. Dump table not valid: %d, %X.\n", 3009 rc, be32_to_cpu(sdt->hdr.state)); 3010 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; 3011 ioa_cfg->sdt_state = DUMP_OBTAINED; 3012 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3013 return; 3014 } 3015 3016 num_entries = be32_to_cpu(sdt->hdr.num_entries_used); 3017 3018 if (num_entries > max_num_entries) 3019 num_entries = max_num_entries; 3020 3021 /* Update dump length to the actual data to be copied */ 3022 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header); 3023 if (ioa_cfg->sis64) 3024 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry); 3025 else 3026 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry); 3027 3028 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3029 3030 for (i = 0; i < num_entries; i++) { 3031 if (ioa_dump->hdr.len > max_dump_size) { 3032 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 3033 break; 3034 } 3035 3036 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { 3037 sdt_word = be32_to_cpu(sdt->entry[i].start_token); 3038 if (ioa_cfg->sis64) 3039 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token); 3040 else { 3041 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; 3042 end_off = be32_to_cpu(sdt->entry[i].end_token); 3043 3044 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) 3045 bytes_to_copy = end_off - start_off; 3046 else 3047 valid = 0; 3048 } 3049 if (valid) { 3050 if (bytes_to_copy > max_dump_size) { 3051 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; 3052 continue; 3053 } 3054 3055 /* Copy data from adapter to driver buffers */ 3056 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, 3057 bytes_to_copy); 3058 3059 ioa_dump->hdr.len += bytes_copied; 3060 3061 if (bytes_copied != bytes_to_copy) { 3062 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 3063 break; 3064 } 3065 } 3066 } 3067 } 3068 3069 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); 3070 3071 /* Update dump_header */ 3072 driver_dump->hdr.len += ioa_dump->hdr.len; 3073 wmb(); 3074 ioa_cfg->sdt_state = DUMP_OBTAINED; 3075 LEAVE; 3076 } 3077 3078 #else 3079 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0) 3080 #endif 3081 3082 /** 3083 * ipr_release_dump - Free adapter dump memory 3084 * @kref: kref struct 3085 * 3086 * Return value: 3087 * nothing 3088 **/ 3089 static void ipr_release_dump(struct kref *kref) 3090 { 3091 struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref); 3092 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; 3093 unsigned long lock_flags = 0; 3094 int i; 3095 3096 ENTER; 3097 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3098 ioa_cfg->dump = NULL; 3099 ioa_cfg->sdt_state = INACTIVE; 3100 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3101 3102 for (i = 0; i < dump->ioa_dump.next_page_index; i++) 3103 free_page((unsigned long) dump->ioa_dump.ioa_data[i]); 3104 3105 vfree(dump->ioa_dump.ioa_data); 3106 kfree(dump); 3107 LEAVE; 3108 } 3109 3110 /** 3111 * ipr_worker_thread - Worker thread 3112 * @work: ioa config struct 3113 * 3114 * Called at task level from a work thread. This function takes care 3115 * of adding and removing device from the mid-layer as configuration 3116 * changes are detected by the adapter. 3117 * 3118 * Return value: 3119 * nothing 3120 **/ 3121 static void ipr_worker_thread(struct work_struct *work) 3122 { 3123 unsigned long lock_flags; 3124 struct ipr_resource_entry *res; 3125 struct scsi_device *sdev; 3126 struct ipr_dump *dump; 3127 struct ipr_ioa_cfg *ioa_cfg = 3128 container_of(work, struct ipr_ioa_cfg, work_q); 3129 u8 bus, target, lun; 3130 int did_work; 3131 3132 ENTER; 3133 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3134 3135 if (ioa_cfg->sdt_state == READ_DUMP) { 3136 dump = ioa_cfg->dump; 3137 if (!dump) { 3138 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3139 return; 3140 } 3141 kref_get(&dump->kref); 3142 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3143 ipr_get_ioa_dump(ioa_cfg, dump); 3144 kref_put(&dump->kref, ipr_release_dump); 3145 3146 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3147 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout) 3148 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3149 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3150 return; 3151 } 3152 3153 restart: 3154 do { 3155 did_work = 0; 3156 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) { 3157 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3158 return; 3159 } 3160 3161 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3162 if (res->del_from_ml && res->sdev) { 3163 did_work = 1; 3164 sdev = res->sdev; 3165 if (!scsi_device_get(sdev)) { 3166 if (!res->add_to_ml) 3167 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 3168 else 3169 res->del_from_ml = 0; 3170 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3171 scsi_remove_device(sdev); 3172 scsi_device_put(sdev); 3173 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3174 } 3175 break; 3176 } 3177 } 3178 } while (did_work); 3179 3180 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3181 if (res->add_to_ml) { 3182 bus = res->bus; 3183 target = res->target; 3184 lun = res->lun; 3185 res->add_to_ml = 0; 3186 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3187 scsi_add_device(ioa_cfg->host, bus, target, lun); 3188 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3189 goto restart; 3190 } 3191 } 3192 3193 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3194 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE); 3195 LEAVE; 3196 } 3197 3198 #ifdef CONFIG_SCSI_IPR_TRACE 3199 /** 3200 * ipr_read_trace - Dump the adapter trace 3201 * @filp: open sysfs file 3202 * @kobj: kobject struct 3203 * @bin_attr: bin_attribute struct 3204 * @buf: buffer 3205 * @off: offset 3206 * @count: buffer size 3207 * 3208 * Return value: 3209 * number of bytes printed to buffer 3210 **/ 3211 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj, 3212 struct bin_attribute *bin_attr, 3213 char *buf, loff_t off, size_t count) 3214 { 3215 struct device *dev = container_of(kobj, struct device, kobj); 3216 struct Scsi_Host *shost = class_to_shost(dev); 3217 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3218 unsigned long lock_flags = 0; 3219 ssize_t ret; 3220 3221 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3222 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace, 3223 IPR_TRACE_SIZE); 3224 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3225 3226 return ret; 3227 } 3228 3229 static struct bin_attribute ipr_trace_attr = { 3230 .attr = { 3231 .name = "trace", 3232 .mode = S_IRUGO, 3233 }, 3234 .size = 0, 3235 .read = ipr_read_trace, 3236 }; 3237 #endif 3238 3239 /** 3240 * ipr_show_fw_version - Show the firmware version 3241 * @dev: class device struct 3242 * @buf: buffer 3243 * 3244 * Return value: 3245 * number of bytes printed to buffer 3246 **/ 3247 static ssize_t ipr_show_fw_version(struct device *dev, 3248 struct device_attribute *attr, char *buf) 3249 { 3250 struct Scsi_Host *shost = class_to_shost(dev); 3251 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3252 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 3253 unsigned long lock_flags = 0; 3254 int len; 3255 3256 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3257 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 3258 ucode_vpd->major_release, ucode_vpd->card_type, 3259 ucode_vpd->minor_release[0], 3260 ucode_vpd->minor_release[1]); 3261 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3262 return len; 3263 } 3264 3265 static struct device_attribute ipr_fw_version_attr = { 3266 .attr = { 3267 .name = "fw_version", 3268 .mode = S_IRUGO, 3269 }, 3270 .show = ipr_show_fw_version, 3271 }; 3272 3273 /** 3274 * ipr_show_log_level - Show the adapter's error logging level 3275 * @dev: class device struct 3276 * @buf: buffer 3277 * 3278 * Return value: 3279 * number of bytes printed to buffer 3280 **/ 3281 static ssize_t ipr_show_log_level(struct device *dev, 3282 struct device_attribute *attr, char *buf) 3283 { 3284 struct Scsi_Host *shost = class_to_shost(dev); 3285 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3286 unsigned long lock_flags = 0; 3287 int len; 3288 3289 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3290 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 3291 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3292 return len; 3293 } 3294 3295 /** 3296 * ipr_store_log_level - Change the adapter's error logging level 3297 * @dev: class device struct 3298 * @buf: buffer 3299 * 3300 * Return value: 3301 * number of bytes printed to buffer 3302 **/ 3303 static ssize_t ipr_store_log_level(struct device *dev, 3304 struct device_attribute *attr, 3305 const char *buf, size_t count) 3306 { 3307 struct Scsi_Host *shost = class_to_shost(dev); 3308 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3309 unsigned long lock_flags = 0; 3310 3311 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3312 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 3313 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3314 return strlen(buf); 3315 } 3316 3317 static struct device_attribute ipr_log_level_attr = { 3318 .attr = { 3319 .name = "log_level", 3320 .mode = S_IRUGO | S_IWUSR, 3321 }, 3322 .show = ipr_show_log_level, 3323 .store = ipr_store_log_level 3324 }; 3325 3326 /** 3327 * ipr_store_diagnostics - IOA Diagnostics interface 3328 * @dev: device struct 3329 * @buf: buffer 3330 * @count: buffer size 3331 * 3332 * This function will reset the adapter and wait a reasonable 3333 * amount of time for any errors that the adapter might log. 3334 * 3335 * Return value: 3336 * count on success / other on failure 3337 **/ 3338 static ssize_t ipr_store_diagnostics(struct device *dev, 3339 struct device_attribute *attr, 3340 const char *buf, size_t count) 3341 { 3342 struct Scsi_Host *shost = class_to_shost(dev); 3343 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3344 unsigned long lock_flags = 0; 3345 int rc = count; 3346 3347 if (!capable(CAP_SYS_ADMIN)) 3348 return -EACCES; 3349 3350 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3351 while (ioa_cfg->in_reset_reload) { 3352 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3353 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3354 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3355 } 3356 3357 ioa_cfg->errors_logged = 0; 3358 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3359 3360 if (ioa_cfg->in_reset_reload) { 3361 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3362 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3363 3364 /* Wait for a second for any errors to be logged */ 3365 msleep(1000); 3366 } else { 3367 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3368 return -EIO; 3369 } 3370 3371 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3372 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 3373 rc = -EIO; 3374 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3375 3376 return rc; 3377 } 3378 3379 static struct device_attribute ipr_diagnostics_attr = { 3380 .attr = { 3381 .name = "run_diagnostics", 3382 .mode = S_IWUSR, 3383 }, 3384 .store = ipr_store_diagnostics 3385 }; 3386 3387 /** 3388 * ipr_show_adapter_state - Show the adapter's state 3389 * @class_dev: device struct 3390 * @buf: buffer 3391 * 3392 * Return value: 3393 * number of bytes printed to buffer 3394 **/ 3395 static ssize_t ipr_show_adapter_state(struct device *dev, 3396 struct device_attribute *attr, char *buf) 3397 { 3398 struct Scsi_Host *shost = class_to_shost(dev); 3399 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3400 unsigned long lock_flags = 0; 3401 int len; 3402 3403 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3404 if (ioa_cfg->ioa_is_dead) 3405 len = snprintf(buf, PAGE_SIZE, "offline\n"); 3406 else 3407 len = snprintf(buf, PAGE_SIZE, "online\n"); 3408 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3409 return len; 3410 } 3411 3412 /** 3413 * ipr_store_adapter_state - Change adapter state 3414 * @dev: device struct 3415 * @buf: buffer 3416 * @count: buffer size 3417 * 3418 * This function will change the adapter's state. 3419 * 3420 * Return value: 3421 * count on success / other on failure 3422 **/ 3423 static ssize_t ipr_store_adapter_state(struct device *dev, 3424 struct device_attribute *attr, 3425 const char *buf, size_t count) 3426 { 3427 struct Scsi_Host *shost = class_to_shost(dev); 3428 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3429 unsigned long lock_flags; 3430 int result = count; 3431 3432 if (!capable(CAP_SYS_ADMIN)) 3433 return -EACCES; 3434 3435 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3436 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) { 3437 ioa_cfg->ioa_is_dead = 0; 3438 ioa_cfg->reset_retries = 0; 3439 ioa_cfg->in_ioa_bringdown = 0; 3440 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3441 } 3442 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3443 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3444 3445 return result; 3446 } 3447 3448 static struct device_attribute ipr_ioa_state_attr = { 3449 .attr = { 3450 .name = "online_state", 3451 .mode = S_IRUGO | S_IWUSR, 3452 }, 3453 .show = ipr_show_adapter_state, 3454 .store = ipr_store_adapter_state 3455 }; 3456 3457 /** 3458 * ipr_store_reset_adapter - Reset the adapter 3459 * @dev: device struct 3460 * @buf: buffer 3461 * @count: buffer size 3462 * 3463 * This function will reset the adapter. 3464 * 3465 * Return value: 3466 * count on success / other on failure 3467 **/ 3468 static ssize_t ipr_store_reset_adapter(struct device *dev, 3469 struct device_attribute *attr, 3470 const char *buf, size_t count) 3471 { 3472 struct Scsi_Host *shost = class_to_shost(dev); 3473 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3474 unsigned long lock_flags; 3475 int result = count; 3476 3477 if (!capable(CAP_SYS_ADMIN)) 3478 return -EACCES; 3479 3480 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3481 if (!ioa_cfg->in_reset_reload) 3482 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3483 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3484 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3485 3486 return result; 3487 } 3488 3489 static struct device_attribute ipr_ioa_reset_attr = { 3490 .attr = { 3491 .name = "reset_host", 3492 .mode = S_IWUSR, 3493 }, 3494 .store = ipr_store_reset_adapter 3495 }; 3496 3497 /** 3498 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 3499 * @buf_len: buffer length 3500 * 3501 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 3502 * list to use for microcode download 3503 * 3504 * Return value: 3505 * pointer to sglist / NULL on failure 3506 **/ 3507 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 3508 { 3509 int sg_size, order, bsize_elem, num_elem, i, j; 3510 struct ipr_sglist *sglist; 3511 struct scatterlist *scatterlist; 3512 struct page *page; 3513 3514 /* Get the minimum size per scatter/gather element */ 3515 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 3516 3517 /* Get the actual size per element */ 3518 order = get_order(sg_size); 3519 3520 /* Determine the actual number of bytes per element */ 3521 bsize_elem = PAGE_SIZE * (1 << order); 3522 3523 /* Determine the actual number of sg entries needed */ 3524 if (buf_len % bsize_elem) 3525 num_elem = (buf_len / bsize_elem) + 1; 3526 else 3527 num_elem = buf_len / bsize_elem; 3528 3529 /* Allocate a scatter/gather list for the DMA */ 3530 sglist = kzalloc(sizeof(struct ipr_sglist) + 3531 (sizeof(struct scatterlist) * (num_elem - 1)), 3532 GFP_KERNEL); 3533 3534 if (sglist == NULL) { 3535 ipr_trace; 3536 return NULL; 3537 } 3538 3539 scatterlist = sglist->scatterlist; 3540 sg_init_table(scatterlist, num_elem); 3541 3542 sglist->order = order; 3543 sglist->num_sg = num_elem; 3544 3545 /* Allocate a bunch of sg elements */ 3546 for (i = 0; i < num_elem; i++) { 3547 page = alloc_pages(GFP_KERNEL, order); 3548 if (!page) { 3549 ipr_trace; 3550 3551 /* Free up what we already allocated */ 3552 for (j = i - 1; j >= 0; j--) 3553 __free_pages(sg_page(&scatterlist[j]), order); 3554 kfree(sglist); 3555 return NULL; 3556 } 3557 3558 sg_set_page(&scatterlist[i], page, 0, 0); 3559 } 3560 3561 return sglist; 3562 } 3563 3564 /** 3565 * ipr_free_ucode_buffer - Frees a microcode download buffer 3566 * @p_dnld: scatter/gather list pointer 3567 * 3568 * Free a DMA'able ucode download buffer previously allocated with 3569 * ipr_alloc_ucode_buffer 3570 * 3571 * Return value: 3572 * nothing 3573 **/ 3574 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 3575 { 3576 int i; 3577 3578 for (i = 0; i < sglist->num_sg; i++) 3579 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order); 3580 3581 kfree(sglist); 3582 } 3583 3584 /** 3585 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 3586 * @sglist: scatter/gather list pointer 3587 * @buffer: buffer pointer 3588 * @len: buffer length 3589 * 3590 * Copy a microcode image from a user buffer into a buffer allocated by 3591 * ipr_alloc_ucode_buffer 3592 * 3593 * Return value: 3594 * 0 on success / other on failure 3595 **/ 3596 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 3597 u8 *buffer, u32 len) 3598 { 3599 int bsize_elem, i, result = 0; 3600 struct scatterlist *scatterlist; 3601 void *kaddr; 3602 3603 /* Determine the actual number of bytes per element */ 3604 bsize_elem = PAGE_SIZE * (1 << sglist->order); 3605 3606 scatterlist = sglist->scatterlist; 3607 3608 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { 3609 struct page *page = sg_page(&scatterlist[i]); 3610 3611 kaddr = kmap(page); 3612 memcpy(kaddr, buffer, bsize_elem); 3613 kunmap(page); 3614 3615 scatterlist[i].length = bsize_elem; 3616 3617 if (result != 0) { 3618 ipr_trace; 3619 return result; 3620 } 3621 } 3622 3623 if (len % bsize_elem) { 3624 struct page *page = sg_page(&scatterlist[i]); 3625 3626 kaddr = kmap(page); 3627 memcpy(kaddr, buffer, len % bsize_elem); 3628 kunmap(page); 3629 3630 scatterlist[i].length = len % bsize_elem; 3631 } 3632 3633 sglist->buffer_len = len; 3634 return result; 3635 } 3636 3637 /** 3638 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL 3639 * @ipr_cmd: ipr command struct 3640 * @sglist: scatter/gather list 3641 * 3642 * Builds a microcode download IOA data list (IOADL). 3643 * 3644 **/ 3645 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd, 3646 struct ipr_sglist *sglist) 3647 { 3648 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3649 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 3650 struct scatterlist *scatterlist = sglist->scatterlist; 3651 int i; 3652 3653 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 3654 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3655 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 3656 3657 ioarcb->ioadl_len = 3658 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 3659 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3660 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE); 3661 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i])); 3662 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i])); 3663 } 3664 3665 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3666 } 3667 3668 /** 3669 * ipr_build_ucode_ioadl - Build a microcode download IOADL 3670 * @ipr_cmd: ipr command struct 3671 * @sglist: scatter/gather list 3672 * 3673 * Builds a microcode download IOA data list (IOADL). 3674 * 3675 **/ 3676 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, 3677 struct ipr_sglist *sglist) 3678 { 3679 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3680 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 3681 struct scatterlist *scatterlist = sglist->scatterlist; 3682 int i; 3683 3684 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 3685 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3686 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 3687 3688 ioarcb->ioadl_len = 3689 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 3690 3691 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3692 ioadl[i].flags_and_data_len = 3693 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); 3694 ioadl[i].address = 3695 cpu_to_be32(sg_dma_address(&scatterlist[i])); 3696 } 3697 3698 ioadl[i-1].flags_and_data_len |= 3699 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3700 } 3701 3702 /** 3703 * ipr_update_ioa_ucode - Update IOA's microcode 3704 * @ioa_cfg: ioa config struct 3705 * @sglist: scatter/gather list 3706 * 3707 * Initiate an adapter reset to update the IOA's microcode 3708 * 3709 * Return value: 3710 * 0 on success / -EIO on failure 3711 **/ 3712 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, 3713 struct ipr_sglist *sglist) 3714 { 3715 unsigned long lock_flags; 3716 3717 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3718 while (ioa_cfg->in_reset_reload) { 3719 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3720 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3721 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3722 } 3723 3724 if (ioa_cfg->ucode_sglist) { 3725 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3726 dev_err(&ioa_cfg->pdev->dev, 3727 "Microcode download already in progress\n"); 3728 return -EIO; 3729 } 3730 3731 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist, 3732 sglist->num_sg, DMA_TO_DEVICE); 3733 3734 if (!sglist->num_dma_sg) { 3735 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3736 dev_err(&ioa_cfg->pdev->dev, 3737 "Failed to map microcode download buffer!\n"); 3738 return -EIO; 3739 } 3740 3741 ioa_cfg->ucode_sglist = sglist; 3742 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3743 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3744 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3745 3746 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3747 ioa_cfg->ucode_sglist = NULL; 3748 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3749 return 0; 3750 } 3751 3752 /** 3753 * ipr_store_update_fw - Update the firmware on the adapter 3754 * @class_dev: device struct 3755 * @buf: buffer 3756 * @count: buffer size 3757 * 3758 * This function will update the firmware on the adapter. 3759 * 3760 * Return value: 3761 * count on success / other on failure 3762 **/ 3763 static ssize_t ipr_store_update_fw(struct device *dev, 3764 struct device_attribute *attr, 3765 const char *buf, size_t count) 3766 { 3767 struct Scsi_Host *shost = class_to_shost(dev); 3768 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3769 struct ipr_ucode_image_header *image_hdr; 3770 const struct firmware *fw_entry; 3771 struct ipr_sglist *sglist; 3772 char fname[100]; 3773 char *src; 3774 int len, result, dnld_size; 3775 3776 if (!capable(CAP_SYS_ADMIN)) 3777 return -EACCES; 3778 3779 len = snprintf(fname, 99, "%s", buf); 3780 fname[len-1] = '\0'; 3781 3782 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 3783 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 3784 return -EIO; 3785 } 3786 3787 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 3788 3789 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 3790 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 3791 sglist = ipr_alloc_ucode_buffer(dnld_size); 3792 3793 if (!sglist) { 3794 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 3795 release_firmware(fw_entry); 3796 return -ENOMEM; 3797 } 3798 3799 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 3800 3801 if (result) { 3802 dev_err(&ioa_cfg->pdev->dev, 3803 "Microcode buffer copy to DMA buffer failed\n"); 3804 goto out; 3805 } 3806 3807 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n"); 3808 3809 result = ipr_update_ioa_ucode(ioa_cfg, sglist); 3810 3811 if (!result) 3812 result = count; 3813 out: 3814 ipr_free_ucode_buffer(sglist); 3815 release_firmware(fw_entry); 3816 return result; 3817 } 3818 3819 static struct device_attribute ipr_update_fw_attr = { 3820 .attr = { 3821 .name = "update_fw", 3822 .mode = S_IWUSR, 3823 }, 3824 .store = ipr_store_update_fw 3825 }; 3826 3827 /** 3828 * ipr_show_fw_type - Show the adapter's firmware type. 3829 * @dev: class device struct 3830 * @buf: buffer 3831 * 3832 * Return value: 3833 * number of bytes printed to buffer 3834 **/ 3835 static ssize_t ipr_show_fw_type(struct device *dev, 3836 struct device_attribute *attr, char *buf) 3837 { 3838 struct Scsi_Host *shost = class_to_shost(dev); 3839 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3840 unsigned long lock_flags = 0; 3841 int len; 3842 3843 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3844 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64); 3845 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3846 return len; 3847 } 3848 3849 static struct device_attribute ipr_ioa_fw_type_attr = { 3850 .attr = { 3851 .name = "fw_type", 3852 .mode = S_IRUGO, 3853 }, 3854 .show = ipr_show_fw_type 3855 }; 3856 3857 static struct device_attribute *ipr_ioa_attrs[] = { 3858 &ipr_fw_version_attr, 3859 &ipr_log_level_attr, 3860 &ipr_diagnostics_attr, 3861 &ipr_ioa_state_attr, 3862 &ipr_ioa_reset_attr, 3863 &ipr_update_fw_attr, 3864 &ipr_ioa_fw_type_attr, 3865 NULL, 3866 }; 3867 3868 #ifdef CONFIG_SCSI_IPR_DUMP 3869 /** 3870 * ipr_read_dump - Dump the adapter 3871 * @filp: open sysfs file 3872 * @kobj: kobject struct 3873 * @bin_attr: bin_attribute struct 3874 * @buf: buffer 3875 * @off: offset 3876 * @count: buffer size 3877 * 3878 * Return value: 3879 * number of bytes printed to buffer 3880 **/ 3881 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj, 3882 struct bin_attribute *bin_attr, 3883 char *buf, loff_t off, size_t count) 3884 { 3885 struct device *cdev = container_of(kobj, struct device, kobj); 3886 struct Scsi_Host *shost = class_to_shost(cdev); 3887 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3888 struct ipr_dump *dump; 3889 unsigned long lock_flags = 0; 3890 char *src; 3891 int len, sdt_end; 3892 size_t rc = count; 3893 3894 if (!capable(CAP_SYS_ADMIN)) 3895 return -EACCES; 3896 3897 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3898 dump = ioa_cfg->dump; 3899 3900 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 3901 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3902 return 0; 3903 } 3904 kref_get(&dump->kref); 3905 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3906 3907 if (off > dump->driver_dump.hdr.len) { 3908 kref_put(&dump->kref, ipr_release_dump); 3909 return 0; 3910 } 3911 3912 if (off + count > dump->driver_dump.hdr.len) { 3913 count = dump->driver_dump.hdr.len - off; 3914 rc = count; 3915 } 3916 3917 if (count && off < sizeof(dump->driver_dump)) { 3918 if (off + count > sizeof(dump->driver_dump)) 3919 len = sizeof(dump->driver_dump) - off; 3920 else 3921 len = count; 3922 src = (u8 *)&dump->driver_dump + off; 3923 memcpy(buf, src, len); 3924 buf += len; 3925 off += len; 3926 count -= len; 3927 } 3928 3929 off -= sizeof(dump->driver_dump); 3930 3931 if (ioa_cfg->sis64) 3932 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) + 3933 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) * 3934 sizeof(struct ipr_sdt_entry)); 3935 else 3936 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) + 3937 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry)); 3938 3939 if (count && off < sdt_end) { 3940 if (off + count > sdt_end) 3941 len = sdt_end - off; 3942 else 3943 len = count; 3944 src = (u8 *)&dump->ioa_dump + off; 3945 memcpy(buf, src, len); 3946 buf += len; 3947 off += len; 3948 count -= len; 3949 } 3950 3951 off -= sdt_end; 3952 3953 while (count) { 3954 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 3955 len = PAGE_ALIGN(off) - off; 3956 else 3957 len = count; 3958 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 3959 src += off & ~PAGE_MASK; 3960 memcpy(buf, src, len); 3961 buf += len; 3962 off += len; 3963 count -= len; 3964 } 3965 3966 kref_put(&dump->kref, ipr_release_dump); 3967 return rc; 3968 } 3969 3970 /** 3971 * ipr_alloc_dump - Prepare for adapter dump 3972 * @ioa_cfg: ioa config struct 3973 * 3974 * Return value: 3975 * 0 on success / other on failure 3976 **/ 3977 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 3978 { 3979 struct ipr_dump *dump; 3980 __be32 **ioa_data; 3981 unsigned long lock_flags = 0; 3982 3983 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); 3984 3985 if (!dump) { 3986 ipr_err("Dump memory allocation failed\n"); 3987 return -ENOMEM; 3988 } 3989 3990 if (ioa_cfg->sis64) 3991 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *)); 3992 else 3993 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *)); 3994 3995 if (!ioa_data) { 3996 ipr_err("Dump memory allocation failed\n"); 3997 kfree(dump); 3998 return -ENOMEM; 3999 } 4000 4001 dump->ioa_dump.ioa_data = ioa_data; 4002 4003 kref_init(&dump->kref); 4004 dump->ioa_cfg = ioa_cfg; 4005 4006 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4007 4008 if (INACTIVE != ioa_cfg->sdt_state) { 4009 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4010 vfree(dump->ioa_dump.ioa_data); 4011 kfree(dump); 4012 return 0; 4013 } 4014 4015 ioa_cfg->dump = dump; 4016 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 4017 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) { 4018 ioa_cfg->dump_taken = 1; 4019 schedule_work(&ioa_cfg->work_q); 4020 } 4021 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4022 4023 return 0; 4024 } 4025 4026 /** 4027 * ipr_free_dump - Free adapter dump memory 4028 * @ioa_cfg: ioa config struct 4029 * 4030 * Return value: 4031 * 0 on success / other on failure 4032 **/ 4033 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 4034 { 4035 struct ipr_dump *dump; 4036 unsigned long lock_flags = 0; 4037 4038 ENTER; 4039 4040 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4041 dump = ioa_cfg->dump; 4042 if (!dump) { 4043 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4044 return 0; 4045 } 4046 4047 ioa_cfg->dump = NULL; 4048 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4049 4050 kref_put(&dump->kref, ipr_release_dump); 4051 4052 LEAVE; 4053 return 0; 4054 } 4055 4056 /** 4057 * ipr_write_dump - Setup dump state of adapter 4058 * @filp: open sysfs file 4059 * @kobj: kobject struct 4060 * @bin_attr: bin_attribute struct 4061 * @buf: buffer 4062 * @off: offset 4063 * @count: buffer size 4064 * 4065 * Return value: 4066 * number of bytes printed to buffer 4067 **/ 4068 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj, 4069 struct bin_attribute *bin_attr, 4070 char *buf, loff_t off, size_t count) 4071 { 4072 struct device *cdev = container_of(kobj, struct device, kobj); 4073 struct Scsi_Host *shost = class_to_shost(cdev); 4074 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 4075 int rc; 4076 4077 if (!capable(CAP_SYS_ADMIN)) 4078 return -EACCES; 4079 4080 if (buf[0] == '1') 4081 rc = ipr_alloc_dump(ioa_cfg); 4082 else if (buf[0] == '0') 4083 rc = ipr_free_dump(ioa_cfg); 4084 else 4085 return -EINVAL; 4086 4087 if (rc) 4088 return rc; 4089 else 4090 return count; 4091 } 4092 4093 static struct bin_attribute ipr_dump_attr = { 4094 .attr = { 4095 .name = "dump", 4096 .mode = S_IRUSR | S_IWUSR, 4097 }, 4098 .size = 0, 4099 .read = ipr_read_dump, 4100 .write = ipr_write_dump 4101 }; 4102 #else 4103 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 4104 #endif 4105 4106 /** 4107 * ipr_change_queue_depth - Change the device's queue depth 4108 * @sdev: scsi device struct 4109 * @qdepth: depth to set 4110 * @reason: calling context 4111 * 4112 * Return value: 4113 * actual depth set 4114 **/ 4115 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth, 4116 int reason) 4117 { 4118 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4119 struct ipr_resource_entry *res; 4120 unsigned long lock_flags = 0; 4121 4122 if (reason != SCSI_QDEPTH_DEFAULT) 4123 return -EOPNOTSUPP; 4124 4125 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4126 res = (struct ipr_resource_entry *)sdev->hostdata; 4127 4128 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN) 4129 qdepth = IPR_MAX_CMD_PER_ATA_LUN; 4130 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4131 4132 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); 4133 return sdev->queue_depth; 4134 } 4135 4136 /** 4137 * ipr_change_queue_type - Change the device's queue type 4138 * @dsev: scsi device struct 4139 * @tag_type: type of tags to use 4140 * 4141 * Return value: 4142 * actual queue type set 4143 **/ 4144 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type) 4145 { 4146 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4147 struct ipr_resource_entry *res; 4148 unsigned long lock_flags = 0; 4149 4150 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4151 res = (struct ipr_resource_entry *)sdev->hostdata; 4152 4153 if (res) { 4154 if (ipr_is_gscsi(res) && sdev->tagged_supported) { 4155 /* 4156 * We don't bother quiescing the device here since the 4157 * adapter firmware does it for us. 4158 */ 4159 scsi_set_tag_type(sdev, tag_type); 4160 4161 if (tag_type) 4162 scsi_activate_tcq(sdev, sdev->queue_depth); 4163 else 4164 scsi_deactivate_tcq(sdev, sdev->queue_depth); 4165 } else 4166 tag_type = 0; 4167 } else 4168 tag_type = 0; 4169 4170 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4171 return tag_type; 4172 } 4173 4174 /** 4175 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 4176 * @dev: device struct 4177 * @attr: device attribute structure 4178 * @buf: buffer 4179 * 4180 * Return value: 4181 * number of bytes printed to buffer 4182 **/ 4183 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) 4184 { 4185 struct scsi_device *sdev = to_scsi_device(dev); 4186 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4187 struct ipr_resource_entry *res; 4188 unsigned long lock_flags = 0; 4189 ssize_t len = -ENXIO; 4190 4191 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4192 res = (struct ipr_resource_entry *)sdev->hostdata; 4193 if (res) 4194 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle); 4195 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4196 return len; 4197 } 4198 4199 static struct device_attribute ipr_adapter_handle_attr = { 4200 .attr = { 4201 .name = "adapter_handle", 4202 .mode = S_IRUSR, 4203 }, 4204 .show = ipr_show_adapter_handle 4205 }; 4206 4207 /** 4208 * ipr_show_resource_path - Show the resource path or the resource address for 4209 * 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_path(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 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4225 4226 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4227 res = (struct ipr_resource_entry *)sdev->hostdata; 4228 if (res && ioa_cfg->sis64) 4229 len = snprintf(buf, PAGE_SIZE, "%s\n", 4230 ipr_format_res_path(res->res_path, buffer, 4231 sizeof(buffer))); 4232 else if (res) 4233 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no, 4234 res->bus, res->target, res->lun); 4235 4236 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4237 return len; 4238 } 4239 4240 static struct device_attribute ipr_resource_path_attr = { 4241 .attr = { 4242 .name = "resource_path", 4243 .mode = S_IRUGO, 4244 }, 4245 .show = ipr_show_resource_path 4246 }; 4247 4248 /** 4249 * ipr_show_device_id - Show the device_id for this device. 4250 * @dev: device struct 4251 * @attr: device attribute structure 4252 * @buf: buffer 4253 * 4254 * Return value: 4255 * number of bytes printed to buffer 4256 **/ 4257 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf) 4258 { 4259 struct scsi_device *sdev = to_scsi_device(dev); 4260 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4261 struct ipr_resource_entry *res; 4262 unsigned long lock_flags = 0; 4263 ssize_t len = -ENXIO; 4264 4265 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4266 res = (struct ipr_resource_entry *)sdev->hostdata; 4267 if (res && ioa_cfg->sis64) 4268 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->dev_id); 4269 else if (res) 4270 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn); 4271 4272 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4273 return len; 4274 } 4275 4276 static struct device_attribute ipr_device_id_attr = { 4277 .attr = { 4278 .name = "device_id", 4279 .mode = S_IRUGO, 4280 }, 4281 .show = ipr_show_device_id 4282 }; 4283 4284 /** 4285 * ipr_show_resource_type - Show the resource type for this device. 4286 * @dev: device struct 4287 * @attr: device attribute structure 4288 * @buf: buffer 4289 * 4290 * Return value: 4291 * number of bytes printed to buffer 4292 **/ 4293 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf) 4294 { 4295 struct scsi_device *sdev = to_scsi_device(dev); 4296 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4297 struct ipr_resource_entry *res; 4298 unsigned long lock_flags = 0; 4299 ssize_t len = -ENXIO; 4300 4301 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4302 res = (struct ipr_resource_entry *)sdev->hostdata; 4303 4304 if (res) 4305 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type); 4306 4307 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4308 return len; 4309 } 4310 4311 static struct device_attribute ipr_resource_type_attr = { 4312 .attr = { 4313 .name = "resource_type", 4314 .mode = S_IRUGO, 4315 }, 4316 .show = ipr_show_resource_type 4317 }; 4318 4319 static struct device_attribute *ipr_dev_attrs[] = { 4320 &ipr_adapter_handle_attr, 4321 &ipr_resource_path_attr, 4322 &ipr_device_id_attr, 4323 &ipr_resource_type_attr, 4324 NULL, 4325 }; 4326 4327 /** 4328 * ipr_biosparam - Return the HSC mapping 4329 * @sdev: scsi device struct 4330 * @block_device: block device pointer 4331 * @capacity: capacity of the device 4332 * @parm: Array containing returned HSC values. 4333 * 4334 * This function generates the HSC parms that fdisk uses. 4335 * We want to make sure we return something that places partitions 4336 * on 4k boundaries for best performance with the IOA. 4337 * 4338 * Return value: 4339 * 0 on success 4340 **/ 4341 static int ipr_biosparam(struct scsi_device *sdev, 4342 struct block_device *block_device, 4343 sector_t capacity, int *parm) 4344 { 4345 int heads, sectors; 4346 sector_t cylinders; 4347 4348 heads = 128; 4349 sectors = 32; 4350 4351 cylinders = capacity; 4352 sector_div(cylinders, (128 * 32)); 4353 4354 /* return result */ 4355 parm[0] = heads; 4356 parm[1] = sectors; 4357 parm[2] = cylinders; 4358 4359 return 0; 4360 } 4361 4362 /** 4363 * ipr_find_starget - Find target based on bus/target. 4364 * @starget: scsi target struct 4365 * 4366 * Return value: 4367 * resource entry pointer if found / NULL if not found 4368 **/ 4369 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget) 4370 { 4371 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4372 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4373 struct ipr_resource_entry *res; 4374 4375 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4376 if ((res->bus == starget->channel) && 4377 (res->target == starget->id)) { 4378 return res; 4379 } 4380 } 4381 4382 return NULL; 4383 } 4384 4385 static struct ata_port_info sata_port_info; 4386 4387 /** 4388 * ipr_target_alloc - Prepare for commands to a SCSI target 4389 * @starget: scsi target struct 4390 * 4391 * If the device is a SATA device, this function allocates an 4392 * ATA port with libata, else it does nothing. 4393 * 4394 * Return value: 4395 * 0 on success / non-0 on failure 4396 **/ 4397 static int ipr_target_alloc(struct scsi_target *starget) 4398 { 4399 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4400 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4401 struct ipr_sata_port *sata_port; 4402 struct ata_port *ap; 4403 struct ipr_resource_entry *res; 4404 unsigned long lock_flags; 4405 4406 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4407 res = ipr_find_starget(starget); 4408 starget->hostdata = NULL; 4409 4410 if (res && ipr_is_gata(res)) { 4411 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4412 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL); 4413 if (!sata_port) 4414 return -ENOMEM; 4415 4416 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost); 4417 if (ap) { 4418 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4419 sata_port->ioa_cfg = ioa_cfg; 4420 sata_port->ap = ap; 4421 sata_port->res = res; 4422 4423 res->sata_port = sata_port; 4424 ap->private_data = sata_port; 4425 starget->hostdata = sata_port; 4426 } else { 4427 kfree(sata_port); 4428 return -ENOMEM; 4429 } 4430 } 4431 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4432 4433 return 0; 4434 } 4435 4436 /** 4437 * ipr_target_destroy - Destroy a SCSI target 4438 * @starget: scsi target struct 4439 * 4440 * If the device was a SATA device, this function frees the libata 4441 * ATA port, else it does nothing. 4442 * 4443 **/ 4444 static void ipr_target_destroy(struct scsi_target *starget) 4445 { 4446 struct ipr_sata_port *sata_port = starget->hostdata; 4447 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4448 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4449 4450 if (ioa_cfg->sis64) { 4451 if (!ipr_find_starget(starget)) { 4452 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS) 4453 clear_bit(starget->id, ioa_cfg->array_ids); 4454 else if (starget->channel == IPR_VSET_VIRTUAL_BUS) 4455 clear_bit(starget->id, ioa_cfg->vset_ids); 4456 else if (starget->channel == 0) 4457 clear_bit(starget->id, ioa_cfg->target_ids); 4458 } 4459 } 4460 4461 if (sata_port) { 4462 starget->hostdata = NULL; 4463 ata_sas_port_destroy(sata_port->ap); 4464 kfree(sata_port); 4465 } 4466 } 4467 4468 /** 4469 * ipr_find_sdev - Find device based on bus/target/lun. 4470 * @sdev: scsi device struct 4471 * 4472 * Return value: 4473 * resource entry pointer if found / NULL if not found 4474 **/ 4475 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev) 4476 { 4477 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4478 struct ipr_resource_entry *res; 4479 4480 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4481 if ((res->bus == sdev->channel) && 4482 (res->target == sdev->id) && 4483 (res->lun == sdev->lun)) 4484 return res; 4485 } 4486 4487 return NULL; 4488 } 4489 4490 /** 4491 * ipr_slave_destroy - Unconfigure a SCSI device 4492 * @sdev: scsi device struct 4493 * 4494 * Return value: 4495 * nothing 4496 **/ 4497 static void ipr_slave_destroy(struct scsi_device *sdev) 4498 { 4499 struct ipr_resource_entry *res; 4500 struct ipr_ioa_cfg *ioa_cfg; 4501 unsigned long lock_flags = 0; 4502 4503 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4504 4505 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4506 res = (struct ipr_resource_entry *) sdev->hostdata; 4507 if (res) { 4508 if (res->sata_port) 4509 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE; 4510 sdev->hostdata = NULL; 4511 res->sdev = NULL; 4512 res->sata_port = NULL; 4513 } 4514 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4515 } 4516 4517 /** 4518 * ipr_slave_configure - Configure a SCSI device 4519 * @sdev: scsi device struct 4520 * 4521 * This function configures the specified scsi device. 4522 * 4523 * Return value: 4524 * 0 on success 4525 **/ 4526 static int ipr_slave_configure(struct scsi_device *sdev) 4527 { 4528 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4529 struct ipr_resource_entry *res; 4530 struct ata_port *ap = NULL; 4531 unsigned long lock_flags = 0; 4532 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4533 4534 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4535 res = sdev->hostdata; 4536 if (res) { 4537 if (ipr_is_af_dasd_device(res)) 4538 sdev->type = TYPE_RAID; 4539 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { 4540 sdev->scsi_level = 4; 4541 sdev->no_uld_attach = 1; 4542 } 4543 if (ipr_is_vset_device(res)) { 4544 blk_queue_rq_timeout(sdev->request_queue, 4545 IPR_VSET_RW_TIMEOUT); 4546 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); 4547 } 4548 if (ipr_is_gata(res) && res->sata_port) 4549 ap = res->sata_port->ap; 4550 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4551 4552 if (ap) { 4553 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN); 4554 ata_sas_slave_configure(sdev, ap); 4555 } else 4556 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); 4557 if (ioa_cfg->sis64) 4558 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n", 4559 ipr_format_res_path(res->res_path, buffer, 4560 sizeof(buffer))); 4561 return 0; 4562 } 4563 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4564 return 0; 4565 } 4566 4567 /** 4568 * ipr_ata_slave_alloc - Prepare for commands to a SATA device 4569 * @sdev: scsi device struct 4570 * 4571 * This function initializes an ATA port so that future commands 4572 * sent through queuecommand will work. 4573 * 4574 * Return value: 4575 * 0 on success 4576 **/ 4577 static int ipr_ata_slave_alloc(struct scsi_device *sdev) 4578 { 4579 struct ipr_sata_port *sata_port = NULL; 4580 int rc = -ENXIO; 4581 4582 ENTER; 4583 if (sdev->sdev_target) 4584 sata_port = sdev->sdev_target->hostdata; 4585 if (sata_port) { 4586 rc = ata_sas_port_init(sata_port->ap); 4587 if (rc == 0) 4588 rc = ata_sas_sync_probe(sata_port->ap); 4589 } 4590 4591 if (rc) 4592 ipr_slave_destroy(sdev); 4593 4594 LEAVE; 4595 return rc; 4596 } 4597 4598 /** 4599 * ipr_slave_alloc - Prepare for commands to a device. 4600 * @sdev: scsi device struct 4601 * 4602 * This function saves a pointer to the resource entry 4603 * in the scsi device struct if the device exists. We 4604 * can then use this pointer in ipr_queuecommand when 4605 * handling new commands. 4606 * 4607 * Return value: 4608 * 0 on success / -ENXIO if device does not exist 4609 **/ 4610 static int ipr_slave_alloc(struct scsi_device *sdev) 4611 { 4612 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4613 struct ipr_resource_entry *res; 4614 unsigned long lock_flags; 4615 int rc = -ENXIO; 4616 4617 sdev->hostdata = NULL; 4618 4619 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4620 4621 res = ipr_find_sdev(sdev); 4622 if (res) { 4623 res->sdev = sdev; 4624 res->add_to_ml = 0; 4625 res->in_erp = 0; 4626 sdev->hostdata = res; 4627 if (!ipr_is_naca_model(res)) 4628 res->needs_sync_complete = 1; 4629 rc = 0; 4630 if (ipr_is_gata(res)) { 4631 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4632 return ipr_ata_slave_alloc(sdev); 4633 } 4634 } 4635 4636 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4637 4638 return rc; 4639 } 4640 4641 /** 4642 * ipr_eh_host_reset - Reset the host adapter 4643 * @scsi_cmd: scsi command struct 4644 * 4645 * Return value: 4646 * SUCCESS / FAILED 4647 **/ 4648 static int __ipr_eh_host_reset(struct scsi_cmnd *scsi_cmd) 4649 { 4650 struct ipr_ioa_cfg *ioa_cfg; 4651 int rc; 4652 4653 ENTER; 4654 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 4655 4656 if (!ioa_cfg->in_reset_reload) { 4657 dev_err(&ioa_cfg->pdev->dev, 4658 "Adapter being reset as a result of error recovery.\n"); 4659 4660 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4661 ioa_cfg->sdt_state = GET_DUMP; 4662 } 4663 4664 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV); 4665 4666 LEAVE; 4667 return rc; 4668 } 4669 4670 static int ipr_eh_host_reset(struct scsi_cmnd *cmd) 4671 { 4672 int rc; 4673 4674 spin_lock_irq(cmd->device->host->host_lock); 4675 rc = __ipr_eh_host_reset(cmd); 4676 spin_unlock_irq(cmd->device->host->host_lock); 4677 4678 return rc; 4679 } 4680 4681 /** 4682 * ipr_device_reset - Reset the device 4683 * @ioa_cfg: ioa config struct 4684 * @res: resource entry struct 4685 * 4686 * This function issues a device reset to the affected device. 4687 * If the device is a SCSI device, a LUN reset will be sent 4688 * to the device first. If that does not work, a target reset 4689 * will be sent. If the device is a SATA device, a PHY reset will 4690 * be sent. 4691 * 4692 * Return value: 4693 * 0 on success / non-zero on failure 4694 **/ 4695 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, 4696 struct ipr_resource_entry *res) 4697 { 4698 struct ipr_cmnd *ipr_cmd; 4699 struct ipr_ioarcb *ioarcb; 4700 struct ipr_cmd_pkt *cmd_pkt; 4701 struct ipr_ioarcb_ata_regs *regs; 4702 u32 ioasc; 4703 4704 ENTER; 4705 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4706 ioarcb = &ipr_cmd->ioarcb; 4707 cmd_pkt = &ioarcb->cmd_pkt; 4708 4709 if (ipr_cmd->ioa_cfg->sis64) { 4710 regs = &ipr_cmd->i.ata_ioadl.regs; 4711 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb)); 4712 } else 4713 regs = &ioarcb->u.add_data.u.regs; 4714 4715 ioarcb->res_handle = res->res_handle; 4716 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4717 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 4718 if (ipr_is_gata(res)) { 4719 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET; 4720 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags)); 4721 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 4722 } 4723 4724 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 4725 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 4726 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4727 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) { 4728 if (ipr_cmd->ioa_cfg->sis64) 4729 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata, 4730 sizeof(struct ipr_ioasa_gata)); 4731 else 4732 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata, 4733 sizeof(struct ipr_ioasa_gata)); 4734 } 4735 4736 LEAVE; 4737 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0; 4738 } 4739 4740 /** 4741 * ipr_sata_reset - Reset the SATA port 4742 * @link: SATA link to reset 4743 * @classes: class of the attached device 4744 * 4745 * This function issues a SATA phy reset to the affected ATA link. 4746 * 4747 * Return value: 4748 * 0 on success / non-zero on failure 4749 **/ 4750 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes, 4751 unsigned long deadline) 4752 { 4753 struct ipr_sata_port *sata_port = link->ap->private_data; 4754 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 4755 struct ipr_resource_entry *res; 4756 unsigned long lock_flags = 0; 4757 int rc = -ENXIO; 4758 4759 ENTER; 4760 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4761 while (ioa_cfg->in_reset_reload) { 4762 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4763 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4764 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4765 } 4766 4767 res = sata_port->res; 4768 if (res) { 4769 rc = ipr_device_reset(ioa_cfg, res); 4770 *classes = res->ata_class; 4771 } 4772 4773 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4774 LEAVE; 4775 return rc; 4776 } 4777 4778 /** 4779 * ipr_eh_dev_reset - Reset the device 4780 * @scsi_cmd: scsi command struct 4781 * 4782 * This function issues a device reset to the affected device. 4783 * A LUN reset will be sent to the device first. If that does 4784 * not work, a target reset will be sent. 4785 * 4786 * Return value: 4787 * SUCCESS / FAILED 4788 **/ 4789 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd) 4790 { 4791 struct ipr_cmnd *ipr_cmd; 4792 struct ipr_ioa_cfg *ioa_cfg; 4793 struct ipr_resource_entry *res; 4794 struct ata_port *ap; 4795 int rc = 0; 4796 4797 ENTER; 4798 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 4799 res = scsi_cmd->device->hostdata; 4800 4801 if (!res) 4802 return FAILED; 4803 4804 /* 4805 * If we are currently going through reset/reload, return failed. This will force the 4806 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 4807 * reset to complete 4808 */ 4809 if (ioa_cfg->in_reset_reload) 4810 return FAILED; 4811 if (ioa_cfg->ioa_is_dead) 4812 return FAILED; 4813 4814 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4815 if (ipr_cmd->ioarcb.res_handle == res->res_handle) { 4816 if (ipr_cmd->scsi_cmd) 4817 ipr_cmd->done = ipr_scsi_eh_done; 4818 if (ipr_cmd->qc) 4819 ipr_cmd->done = ipr_sata_eh_done; 4820 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) { 4821 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT; 4822 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED; 4823 } 4824 } 4825 } 4826 4827 res->resetting_device = 1; 4828 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); 4829 4830 if (ipr_is_gata(res) && res->sata_port) { 4831 ap = res->sata_port->ap; 4832 spin_unlock_irq(scsi_cmd->device->host->host_lock); 4833 ata_std_error_handler(ap); 4834 spin_lock_irq(scsi_cmd->device->host->host_lock); 4835 4836 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4837 if (ipr_cmd->ioarcb.res_handle == res->res_handle) { 4838 rc = -EIO; 4839 break; 4840 } 4841 } 4842 } else 4843 rc = ipr_device_reset(ioa_cfg, res); 4844 res->resetting_device = 0; 4845 4846 LEAVE; 4847 return rc ? FAILED : SUCCESS; 4848 } 4849 4850 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd) 4851 { 4852 int rc; 4853 4854 spin_lock_irq(cmd->device->host->host_lock); 4855 rc = __ipr_eh_dev_reset(cmd); 4856 spin_unlock_irq(cmd->device->host->host_lock); 4857 4858 return rc; 4859 } 4860 4861 /** 4862 * ipr_bus_reset_done - Op done function for bus reset. 4863 * @ipr_cmd: ipr command struct 4864 * 4865 * This function is the op done function for a bus reset 4866 * 4867 * Return value: 4868 * none 4869 **/ 4870 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 4871 { 4872 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4873 struct ipr_resource_entry *res; 4874 4875 ENTER; 4876 if (!ioa_cfg->sis64) 4877 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4878 if (res->res_handle == ipr_cmd->ioarcb.res_handle) { 4879 scsi_report_bus_reset(ioa_cfg->host, res->bus); 4880 break; 4881 } 4882 } 4883 4884 /* 4885 * If abort has not completed, indicate the reset has, else call the 4886 * abort's done function to wake the sleeping eh thread 4887 */ 4888 if (ipr_cmd->sibling->sibling) 4889 ipr_cmd->sibling->sibling = NULL; 4890 else 4891 ipr_cmd->sibling->done(ipr_cmd->sibling); 4892 4893 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4894 LEAVE; 4895 } 4896 4897 /** 4898 * ipr_abort_timeout - An abort task has timed out 4899 * @ipr_cmd: ipr command struct 4900 * 4901 * This function handles when an abort task times out. If this 4902 * happens we issue a bus reset since we have resources tied 4903 * up that must be freed before returning to the midlayer. 4904 * 4905 * Return value: 4906 * none 4907 **/ 4908 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 4909 { 4910 struct ipr_cmnd *reset_cmd; 4911 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4912 struct ipr_cmd_pkt *cmd_pkt; 4913 unsigned long lock_flags = 0; 4914 4915 ENTER; 4916 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4917 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 4918 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4919 return; 4920 } 4921 4922 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n"); 4923 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4924 ipr_cmd->sibling = reset_cmd; 4925 reset_cmd->sibling = ipr_cmd; 4926 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 4927 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 4928 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4929 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 4930 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 4931 4932 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 4933 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4934 LEAVE; 4935 } 4936 4937 /** 4938 * ipr_cancel_op - Cancel specified op 4939 * @scsi_cmd: scsi command struct 4940 * 4941 * This function cancels specified op. 4942 * 4943 * Return value: 4944 * SUCCESS / FAILED 4945 **/ 4946 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd) 4947 { 4948 struct ipr_cmnd *ipr_cmd; 4949 struct ipr_ioa_cfg *ioa_cfg; 4950 struct ipr_resource_entry *res; 4951 struct ipr_cmd_pkt *cmd_pkt; 4952 u32 ioasc, int_reg; 4953 int op_found = 0; 4954 4955 ENTER; 4956 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 4957 res = scsi_cmd->device->hostdata; 4958 4959 /* If we are currently going through reset/reload, return failed. 4960 * This will force the mid-layer to call ipr_eh_host_reset, 4961 * which will then go to sleep and wait for the reset to complete 4962 */ 4963 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) 4964 return FAILED; 4965 if (!res) 4966 return FAILED; 4967 4968 /* 4969 * If we are aborting a timed out op, chances are that the timeout was caused 4970 * by a still not detected EEH error. In such cases, reading a register will 4971 * trigger the EEH recovery infrastructure. 4972 */ 4973 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 4974 4975 if (!ipr_is_gscsi(res)) 4976 return FAILED; 4977 4978 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4979 if (ipr_cmd->scsi_cmd == scsi_cmd) { 4980 ipr_cmd->done = ipr_scsi_eh_done; 4981 op_found = 1; 4982 break; 4983 } 4984 } 4985 4986 if (!op_found) 4987 return SUCCESS; 4988 4989 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4990 ipr_cmd->ioarcb.res_handle = res->res_handle; 4991 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4992 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4993 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4994 ipr_cmd->u.sdev = scsi_cmd->device; 4995 4996 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n", 4997 scsi_cmd->cmnd[0]); 4998 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 4999 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5000 5001 /* 5002 * If the abort task timed out and we sent a bus reset, we will get 5003 * one the following responses to the abort 5004 */ 5005 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 5006 ioasc = 0; 5007 ipr_trace; 5008 } 5009 5010 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5011 if (!ipr_is_naca_model(res)) 5012 res->needs_sync_complete = 1; 5013 5014 LEAVE; 5015 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS; 5016 } 5017 5018 /** 5019 * ipr_eh_abort - Abort a single op 5020 * @scsi_cmd: scsi command struct 5021 * 5022 * Return value: 5023 * SUCCESS / FAILED 5024 **/ 5025 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd) 5026 { 5027 unsigned long flags; 5028 int rc; 5029 5030 ENTER; 5031 5032 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 5033 rc = ipr_cancel_op(scsi_cmd); 5034 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 5035 5036 LEAVE; 5037 return rc; 5038 } 5039 5040 /** 5041 * ipr_handle_other_interrupt - Handle "other" interrupts 5042 * @ioa_cfg: ioa config struct 5043 * @int_reg: interrupt register 5044 * 5045 * Return value: 5046 * IRQ_NONE / IRQ_HANDLED 5047 **/ 5048 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 5049 u32 int_reg) 5050 { 5051 irqreturn_t rc = IRQ_HANDLED; 5052 u32 int_mask_reg; 5053 5054 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 5055 int_reg &= ~int_mask_reg; 5056 5057 /* If an interrupt on the adapter did not occur, ignore it. 5058 * Or in the case of SIS 64, check for a stage change interrupt. 5059 */ 5060 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) { 5061 if (ioa_cfg->sis64) { 5062 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 5063 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 5064 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) { 5065 5066 /* clear stage change */ 5067 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg); 5068 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 5069 list_del(&ioa_cfg->reset_cmd->queue); 5070 del_timer(&ioa_cfg->reset_cmd->timer); 5071 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 5072 return IRQ_HANDLED; 5073 } 5074 } 5075 5076 return IRQ_NONE; 5077 } 5078 5079 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 5080 /* Mask the interrupt */ 5081 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 5082 5083 /* Clear the interrupt */ 5084 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); 5085 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 5086 5087 list_del(&ioa_cfg->reset_cmd->queue); 5088 del_timer(&ioa_cfg->reset_cmd->timer); 5089 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 5090 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) { 5091 if (ioa_cfg->clear_isr) { 5092 if (ipr_debug && printk_ratelimit()) 5093 dev_err(&ioa_cfg->pdev->dev, 5094 "Spurious interrupt detected. 0x%08X\n", int_reg); 5095 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32); 5096 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5097 return IRQ_NONE; 5098 } 5099 } else { 5100 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 5101 ioa_cfg->ioa_unit_checked = 1; 5102 else 5103 dev_err(&ioa_cfg->pdev->dev, 5104 "Permanent IOA failure. 0x%08X\n", int_reg); 5105 5106 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 5107 ioa_cfg->sdt_state = GET_DUMP; 5108 5109 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 5110 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5111 } 5112 5113 return rc; 5114 } 5115 5116 /** 5117 * ipr_isr_eh - Interrupt service routine error handler 5118 * @ioa_cfg: ioa config struct 5119 * @msg: message to log 5120 * 5121 * Return value: 5122 * none 5123 **/ 5124 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg) 5125 { 5126 ioa_cfg->errors_logged++; 5127 dev_err(&ioa_cfg->pdev->dev, "%s\n", msg); 5128 5129 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 5130 ioa_cfg->sdt_state = GET_DUMP; 5131 5132 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5133 } 5134 5135 /** 5136 * ipr_isr - Interrupt service routine 5137 * @irq: irq number 5138 * @devp: pointer to ioa config struct 5139 * 5140 * Return value: 5141 * IRQ_NONE / IRQ_HANDLED 5142 **/ 5143 static irqreturn_t ipr_isr(int irq, void *devp) 5144 { 5145 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 5146 unsigned long lock_flags = 0; 5147 u32 int_reg = 0; 5148 u32 ioasc; 5149 u16 cmd_index; 5150 int num_hrrq = 0; 5151 int irq_none = 0; 5152 struct ipr_cmnd *ipr_cmd, *temp; 5153 irqreturn_t rc = IRQ_NONE; 5154 LIST_HEAD(doneq); 5155 5156 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5157 5158 /* If interrupts are disabled, ignore the interrupt */ 5159 if (!ioa_cfg->allow_interrupts) { 5160 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5161 return IRQ_NONE; 5162 } 5163 5164 while (1) { 5165 ipr_cmd = NULL; 5166 5167 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5168 ioa_cfg->toggle_bit) { 5169 5170 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & 5171 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 5172 5173 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { 5174 ipr_isr_eh(ioa_cfg, "Invalid response handle from IOA"); 5175 rc = IRQ_HANDLED; 5176 goto unlock_out; 5177 } 5178 5179 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 5180 5181 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5182 5183 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 5184 5185 list_move_tail(&ipr_cmd->queue, &doneq); 5186 5187 rc = IRQ_HANDLED; 5188 5189 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { 5190 ioa_cfg->hrrq_curr++; 5191 } else { 5192 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 5193 ioa_cfg->toggle_bit ^= 1u; 5194 } 5195 } 5196 5197 if (ipr_cmd && !ioa_cfg->clear_isr) 5198 break; 5199 5200 if (ipr_cmd != NULL) { 5201 /* Clear the PCI interrupt */ 5202 num_hrrq = 0; 5203 do { 5204 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32); 5205 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5206 } while (int_reg & IPR_PCII_HRRQ_UPDATED && 5207 num_hrrq++ < IPR_MAX_HRRQ_RETRIES); 5208 5209 } else if (rc == IRQ_NONE && irq_none == 0) { 5210 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 5211 irq_none++; 5212 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES && 5213 int_reg & IPR_PCII_HRRQ_UPDATED) { 5214 ipr_isr_eh(ioa_cfg, "Error clearing HRRQ"); 5215 rc = IRQ_HANDLED; 5216 goto unlock_out; 5217 } else 5218 break; 5219 } 5220 5221 if (unlikely(rc == IRQ_NONE)) 5222 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 5223 5224 unlock_out: 5225 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5226 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) { 5227 list_del(&ipr_cmd->queue); 5228 del_timer(&ipr_cmd->timer); 5229 ipr_cmd->fast_done(ipr_cmd); 5230 } 5231 5232 return rc; 5233 } 5234 5235 /** 5236 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer 5237 * @ioa_cfg: ioa config struct 5238 * @ipr_cmd: ipr command struct 5239 * 5240 * Return value: 5241 * 0 on success / -1 on failure 5242 **/ 5243 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg, 5244 struct ipr_cmnd *ipr_cmd) 5245 { 5246 int i, nseg; 5247 struct scatterlist *sg; 5248 u32 length; 5249 u32 ioadl_flags = 0; 5250 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5251 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5252 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 5253 5254 length = scsi_bufflen(scsi_cmd); 5255 if (!length) 5256 return 0; 5257 5258 nseg = scsi_dma_map(scsi_cmd); 5259 if (nseg < 0) { 5260 if (printk_ratelimit()) 5261 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 5262 return -1; 5263 } 5264 5265 ipr_cmd->dma_use_sg = nseg; 5266 5267 ioarcb->data_transfer_length = cpu_to_be32(length); 5268 ioarcb->ioadl_len = 5269 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 5270 5271 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 5272 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5273 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5274 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) 5275 ioadl_flags = IPR_IOADL_FLAGS_READ; 5276 5277 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 5278 ioadl64[i].flags = cpu_to_be32(ioadl_flags); 5279 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg)); 5280 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg)); 5281 } 5282 5283 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5284 return 0; 5285 } 5286 5287 /** 5288 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 5289 * @ioa_cfg: ioa config struct 5290 * @ipr_cmd: ipr command struct 5291 * 5292 * Return value: 5293 * 0 on success / -1 on failure 5294 **/ 5295 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 5296 struct ipr_cmnd *ipr_cmd) 5297 { 5298 int i, nseg; 5299 struct scatterlist *sg; 5300 u32 length; 5301 u32 ioadl_flags = 0; 5302 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5303 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5304 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 5305 5306 length = scsi_bufflen(scsi_cmd); 5307 if (!length) 5308 return 0; 5309 5310 nseg = scsi_dma_map(scsi_cmd); 5311 if (nseg < 0) { 5312 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 5313 return -1; 5314 } 5315 5316 ipr_cmd->dma_use_sg = nseg; 5317 5318 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 5319 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5320 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5321 ioarcb->data_transfer_length = cpu_to_be32(length); 5322 ioarcb->ioadl_len = 5323 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5324 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 5325 ioadl_flags = IPR_IOADL_FLAGS_READ; 5326 ioarcb->read_data_transfer_length = cpu_to_be32(length); 5327 ioarcb->read_ioadl_len = 5328 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5329 } 5330 5331 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) { 5332 ioadl = ioarcb->u.add_data.u.ioadl; 5333 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) + 5334 offsetof(struct ipr_ioarcb, u.add_data)); 5335 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 5336 } 5337 5338 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 5339 ioadl[i].flags_and_data_len = 5340 cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 5341 ioadl[i].address = cpu_to_be32(sg_dma_address(sg)); 5342 } 5343 5344 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5345 return 0; 5346 } 5347 5348 /** 5349 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes 5350 * @scsi_cmd: scsi command struct 5351 * 5352 * Return value: 5353 * task attributes 5354 **/ 5355 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) 5356 { 5357 u8 tag[2]; 5358 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; 5359 5360 if (scsi_populate_tag_msg(scsi_cmd, tag)) { 5361 switch (tag[0]) { 5362 case MSG_SIMPLE_TAG: 5363 rc = IPR_FLAGS_LO_SIMPLE_TASK; 5364 break; 5365 case MSG_HEAD_TAG: 5366 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; 5367 break; 5368 case MSG_ORDERED_TAG: 5369 rc = IPR_FLAGS_LO_ORDERED_TASK; 5370 break; 5371 }; 5372 } 5373 5374 return rc; 5375 } 5376 5377 /** 5378 * ipr_erp_done - Process completion of ERP for a device 5379 * @ipr_cmd: ipr command struct 5380 * 5381 * This function copies the sense buffer into the scsi_cmd 5382 * struct and pushes the scsi_done function. 5383 * 5384 * Return value: 5385 * nothing 5386 **/ 5387 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 5388 { 5389 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5390 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 5391 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5392 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5393 5394 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 5395 scsi_cmd->result |= (DID_ERROR << 16); 5396 scmd_printk(KERN_ERR, scsi_cmd, 5397 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 5398 } else { 5399 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 5400 SCSI_SENSE_BUFFERSIZE); 5401 } 5402 5403 if (res) { 5404 if (!ipr_is_naca_model(res)) 5405 res->needs_sync_complete = 1; 5406 res->in_erp = 0; 5407 } 5408 scsi_dma_unmap(ipr_cmd->scsi_cmd); 5409 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5410 scsi_cmd->scsi_done(scsi_cmd); 5411 } 5412 5413 /** 5414 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 5415 * @ipr_cmd: ipr command struct 5416 * 5417 * Return value: 5418 * none 5419 **/ 5420 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 5421 { 5422 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5423 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5424 dma_addr_t dma_addr = ipr_cmd->dma_addr; 5425 5426 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 5427 ioarcb->data_transfer_length = 0; 5428 ioarcb->read_data_transfer_length = 0; 5429 ioarcb->ioadl_len = 0; 5430 ioarcb->read_ioadl_len = 0; 5431 ioasa->hdr.ioasc = 0; 5432 ioasa->hdr.residual_data_len = 0; 5433 5434 if (ipr_cmd->ioa_cfg->sis64) 5435 ioarcb->u.sis64_addr_data.data_ioadl_addr = 5436 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 5437 else { 5438 ioarcb->write_ioadl_addr = 5439 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 5440 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 5441 } 5442 } 5443 5444 /** 5445 * ipr_erp_request_sense - Send request sense to a device 5446 * @ipr_cmd: ipr command struct 5447 * 5448 * This function sends a request sense to a device as a result 5449 * of a check condition. 5450 * 5451 * Return value: 5452 * nothing 5453 **/ 5454 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 5455 { 5456 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 5457 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5458 5459 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 5460 ipr_erp_done(ipr_cmd); 5461 return; 5462 } 5463 5464 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 5465 5466 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 5467 cmd_pkt->cdb[0] = REQUEST_SENSE; 5468 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 5469 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 5470 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 5471 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 5472 5473 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma, 5474 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST); 5475 5476 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 5477 IPR_REQUEST_SENSE_TIMEOUT * 2); 5478 } 5479 5480 /** 5481 * ipr_erp_cancel_all - Send cancel all to a device 5482 * @ipr_cmd: ipr command struct 5483 * 5484 * This function sends a cancel all to a device to clear the 5485 * queue. If we are running TCQ on the device, QERR is set to 1, 5486 * which means all outstanding ops have been dropped on the floor. 5487 * Cancel all will return them to us. 5488 * 5489 * Return value: 5490 * nothing 5491 **/ 5492 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 5493 { 5494 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5495 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 5496 struct ipr_cmd_pkt *cmd_pkt; 5497 5498 res->in_erp = 1; 5499 5500 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 5501 5502 if (!scsi_get_tag_type(scsi_cmd->device)) { 5503 ipr_erp_request_sense(ipr_cmd); 5504 return; 5505 } 5506 5507 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 5508 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5509 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 5510 5511 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 5512 IPR_CANCEL_ALL_TIMEOUT); 5513 } 5514 5515 /** 5516 * ipr_dump_ioasa - Dump contents of IOASA 5517 * @ioa_cfg: ioa config struct 5518 * @ipr_cmd: ipr command struct 5519 * @res: resource entry struct 5520 * 5521 * This function is invoked by the interrupt handler when ops 5522 * fail. It will log the IOASA if appropriate. Only called 5523 * for GPDD ops. 5524 * 5525 * Return value: 5526 * none 5527 **/ 5528 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 5529 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res) 5530 { 5531 int i; 5532 u16 data_len; 5533 u32 ioasc, fd_ioasc; 5534 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5535 __be32 *ioasa_data = (__be32 *)ioasa; 5536 int error_index; 5537 5538 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK; 5539 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK; 5540 5541 if (0 == ioasc) 5542 return; 5543 5544 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 5545 return; 5546 5547 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc) 5548 error_index = ipr_get_error(fd_ioasc); 5549 else 5550 error_index = ipr_get_error(ioasc); 5551 5552 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 5553 /* Don't log an error if the IOA already logged one */ 5554 if (ioasa->hdr.ilid != 0) 5555 return; 5556 5557 if (!ipr_is_gscsi(res)) 5558 return; 5559 5560 if (ipr_error_table[error_index].log_ioasa == 0) 5561 return; 5562 } 5563 5564 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error); 5565 5566 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len); 5567 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len) 5568 data_len = sizeof(struct ipr_ioasa64); 5569 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len) 5570 data_len = sizeof(struct ipr_ioasa); 5571 5572 ipr_err("IOASA Dump:\n"); 5573 5574 for (i = 0; i < data_len / 4; i += 4) { 5575 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 5576 be32_to_cpu(ioasa_data[i]), 5577 be32_to_cpu(ioasa_data[i+1]), 5578 be32_to_cpu(ioasa_data[i+2]), 5579 be32_to_cpu(ioasa_data[i+3])); 5580 } 5581 } 5582 5583 /** 5584 * ipr_gen_sense - Generate SCSI sense data from an IOASA 5585 * @ioasa: IOASA 5586 * @sense_buf: sense data buffer 5587 * 5588 * Return value: 5589 * none 5590 **/ 5591 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 5592 { 5593 u32 failing_lba; 5594 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 5595 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 5596 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5597 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc); 5598 5599 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 5600 5601 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 5602 return; 5603 5604 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 5605 5606 if (ipr_is_vset_device(res) && 5607 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 5608 ioasa->u.vset.failing_lba_hi != 0) { 5609 sense_buf[0] = 0x72; 5610 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 5611 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 5612 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 5613 5614 sense_buf[7] = 12; 5615 sense_buf[8] = 0; 5616 sense_buf[9] = 0x0A; 5617 sense_buf[10] = 0x80; 5618 5619 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 5620 5621 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 5622 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 5623 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 5624 sense_buf[15] = failing_lba & 0x000000ff; 5625 5626 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 5627 5628 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 5629 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 5630 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 5631 sense_buf[19] = failing_lba & 0x000000ff; 5632 } else { 5633 sense_buf[0] = 0x70; 5634 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 5635 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 5636 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 5637 5638 /* Illegal request */ 5639 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 5640 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 5641 sense_buf[7] = 10; /* additional length */ 5642 5643 /* IOARCB was in error */ 5644 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 5645 sense_buf[15] = 0xC0; 5646 else /* Parameter data was invalid */ 5647 sense_buf[15] = 0x80; 5648 5649 sense_buf[16] = 5650 ((IPR_FIELD_POINTER_MASK & 5651 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff; 5652 sense_buf[17] = 5653 (IPR_FIELD_POINTER_MASK & 5654 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff; 5655 } else { 5656 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 5657 if (ipr_is_vset_device(res)) 5658 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 5659 else 5660 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 5661 5662 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 5663 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 5664 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 5665 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 5666 sense_buf[6] = failing_lba & 0x000000ff; 5667 } 5668 5669 sense_buf[7] = 6; /* additional length */ 5670 } 5671 } 5672 } 5673 5674 /** 5675 * ipr_get_autosense - Copy autosense data to sense buffer 5676 * @ipr_cmd: ipr command struct 5677 * 5678 * This function copies the autosense buffer to the buffer 5679 * in the scsi_cmd, if there is autosense available. 5680 * 5681 * Return value: 5682 * 1 if autosense was available / 0 if not 5683 **/ 5684 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) 5685 { 5686 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5687 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64; 5688 5689 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0) 5690 return 0; 5691 5692 if (ipr_cmd->ioa_cfg->sis64) 5693 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data, 5694 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len), 5695 SCSI_SENSE_BUFFERSIZE)); 5696 else 5697 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, 5698 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), 5699 SCSI_SENSE_BUFFERSIZE)); 5700 return 1; 5701 } 5702 5703 /** 5704 * ipr_erp_start - Process an error response for a SCSI op 5705 * @ioa_cfg: ioa config struct 5706 * @ipr_cmd: ipr command struct 5707 * 5708 * This function determines whether or not to initiate ERP 5709 * on the affected device. 5710 * 5711 * Return value: 5712 * nothing 5713 **/ 5714 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 5715 struct ipr_cmnd *ipr_cmd) 5716 { 5717 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5718 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 5719 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5720 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK; 5721 5722 if (!res) { 5723 ipr_scsi_eh_done(ipr_cmd); 5724 return; 5725 } 5726 5727 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS) 5728 ipr_gen_sense(ipr_cmd); 5729 5730 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 5731 5732 switch (masked_ioasc) { 5733 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 5734 if (ipr_is_naca_model(res)) 5735 scsi_cmd->result |= (DID_ABORT << 16); 5736 else 5737 scsi_cmd->result |= (DID_IMM_RETRY << 16); 5738 break; 5739 case IPR_IOASC_IR_RESOURCE_HANDLE: 5740 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: 5741 scsi_cmd->result |= (DID_NO_CONNECT << 16); 5742 break; 5743 case IPR_IOASC_HW_SEL_TIMEOUT: 5744 scsi_cmd->result |= (DID_NO_CONNECT << 16); 5745 if (!ipr_is_naca_model(res)) 5746 res->needs_sync_complete = 1; 5747 break; 5748 case IPR_IOASC_SYNC_REQUIRED: 5749 if (!res->in_erp) 5750 res->needs_sync_complete = 1; 5751 scsi_cmd->result |= (DID_IMM_RETRY << 16); 5752 break; 5753 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 5754 case IPR_IOASA_IR_DUAL_IOA_DISABLED: 5755 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 5756 break; 5757 case IPR_IOASC_BUS_WAS_RESET: 5758 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 5759 /* 5760 * Report the bus reset and ask for a retry. The device 5761 * will give CC/UA the next command. 5762 */ 5763 if (!res->resetting_device) 5764 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 5765 scsi_cmd->result |= (DID_ERROR << 16); 5766 if (!ipr_is_naca_model(res)) 5767 res->needs_sync_complete = 1; 5768 break; 5769 case IPR_IOASC_HW_DEV_BUS_STATUS: 5770 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 5771 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 5772 if (!ipr_get_autosense(ipr_cmd)) { 5773 if (!ipr_is_naca_model(res)) { 5774 ipr_erp_cancel_all(ipr_cmd); 5775 return; 5776 } 5777 } 5778 } 5779 if (!ipr_is_naca_model(res)) 5780 res->needs_sync_complete = 1; 5781 break; 5782 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 5783 break; 5784 default: 5785 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 5786 scsi_cmd->result |= (DID_ERROR << 16); 5787 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) 5788 res->needs_sync_complete = 1; 5789 break; 5790 } 5791 5792 scsi_dma_unmap(ipr_cmd->scsi_cmd); 5793 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5794 scsi_cmd->scsi_done(scsi_cmd); 5795 } 5796 5797 /** 5798 * ipr_scsi_done - mid-layer done function 5799 * @ipr_cmd: ipr command struct 5800 * 5801 * This function is invoked by the interrupt handler for 5802 * ops generated by the SCSI mid-layer 5803 * 5804 * Return value: 5805 * none 5806 **/ 5807 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 5808 { 5809 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5810 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5811 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5812 unsigned long lock_flags; 5813 5814 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len)); 5815 5816 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 5817 scsi_dma_unmap(scsi_cmd); 5818 5819 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5820 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5821 scsi_cmd->scsi_done(scsi_cmd); 5822 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5823 } else { 5824 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5825 ipr_erp_start(ioa_cfg, ipr_cmd); 5826 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5827 } 5828 } 5829 5830 /** 5831 * ipr_queuecommand - Queue a mid-layer request 5832 * @shost: scsi host struct 5833 * @scsi_cmd: scsi command struct 5834 * 5835 * This function queues a request generated by the mid-layer. 5836 * 5837 * Return value: 5838 * 0 on success 5839 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 5840 * SCSI_MLQUEUE_HOST_BUSY if host is busy 5841 **/ 5842 static int ipr_queuecommand(struct Scsi_Host *shost, 5843 struct scsi_cmnd *scsi_cmd) 5844 { 5845 struct ipr_ioa_cfg *ioa_cfg; 5846 struct ipr_resource_entry *res; 5847 struct ipr_ioarcb *ioarcb; 5848 struct ipr_cmnd *ipr_cmd; 5849 unsigned long lock_flags; 5850 int rc; 5851 5852 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 5853 5854 spin_lock_irqsave(shost->host_lock, lock_flags); 5855 scsi_cmd->result = (DID_OK << 16); 5856 res = scsi_cmd->device->hostdata; 5857 5858 /* 5859 * We are currently blocking all devices due to a host reset 5860 * We have told the host to stop giving us new requests, but 5861 * ERP ops don't count. FIXME 5862 */ 5863 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) { 5864 spin_unlock_irqrestore(shost->host_lock, lock_flags); 5865 return SCSI_MLQUEUE_HOST_BUSY; 5866 } 5867 5868 /* 5869 * FIXME - Create scsi_set_host_offline interface 5870 * and the ioa_is_dead check can be removed 5871 */ 5872 if (unlikely(ioa_cfg->ioa_is_dead || !res)) { 5873 spin_unlock_irqrestore(shost->host_lock, lock_flags); 5874 goto err_nodev; 5875 } 5876 5877 if (ipr_is_gata(res) && res->sata_port) { 5878 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap); 5879 spin_unlock_irqrestore(shost->host_lock, lock_flags); 5880 return rc; 5881 } 5882 5883 ipr_cmd = __ipr_get_free_ipr_cmnd(ioa_cfg); 5884 spin_unlock_irqrestore(shost->host_lock, lock_flags); 5885 5886 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done); 5887 ioarcb = &ipr_cmd->ioarcb; 5888 5889 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 5890 ipr_cmd->scsi_cmd = scsi_cmd; 5891 ipr_cmd->done = ipr_scsi_eh_done; 5892 5893 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 5894 if (scsi_cmd->underflow == 0) 5895 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 5896 5897 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 5898 if (ipr_is_gscsi(res)) 5899 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 5900 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 5901 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); 5902 } 5903 5904 if (scsi_cmd->cmnd[0] >= 0xC0 && 5905 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) 5906 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5907 5908 if (ioa_cfg->sis64) 5909 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd); 5910 else 5911 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 5912 5913 spin_lock_irqsave(shost->host_lock, lock_flags); 5914 if (unlikely(rc || (!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))) { 5915 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5916 spin_unlock_irqrestore(shost->host_lock, lock_flags); 5917 if (!rc) 5918 scsi_dma_unmap(scsi_cmd); 5919 return SCSI_MLQUEUE_HOST_BUSY; 5920 } 5921 5922 if (unlikely(ioa_cfg->ioa_is_dead)) { 5923 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5924 spin_unlock_irqrestore(shost->host_lock, lock_flags); 5925 scsi_dma_unmap(scsi_cmd); 5926 goto err_nodev; 5927 } 5928 5929 ioarcb->res_handle = res->res_handle; 5930 if (res->needs_sync_complete) { 5931 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 5932 res->needs_sync_complete = 0; 5933 } 5934 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 5935 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res)); 5936 ipr_send_command(ipr_cmd); 5937 spin_unlock_irqrestore(shost->host_lock, lock_flags); 5938 return 0; 5939 5940 err_nodev: 5941 spin_lock_irqsave(shost->host_lock, lock_flags); 5942 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 5943 scsi_cmd->result = (DID_NO_CONNECT << 16); 5944 scsi_cmd->scsi_done(scsi_cmd); 5945 spin_unlock_irqrestore(shost->host_lock, lock_flags); 5946 return 0; 5947 } 5948 5949 /** 5950 * ipr_ioctl - IOCTL handler 5951 * @sdev: scsi device struct 5952 * @cmd: IOCTL cmd 5953 * @arg: IOCTL arg 5954 * 5955 * Return value: 5956 * 0 on success / other on failure 5957 **/ 5958 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) 5959 { 5960 struct ipr_resource_entry *res; 5961 5962 res = (struct ipr_resource_entry *)sdev->hostdata; 5963 if (res && ipr_is_gata(res)) { 5964 if (cmd == HDIO_GET_IDENTITY) 5965 return -ENOTTY; 5966 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg); 5967 } 5968 5969 return -EINVAL; 5970 } 5971 5972 /** 5973 * ipr_info - Get information about the card/driver 5974 * @scsi_host: scsi host struct 5975 * 5976 * Return value: 5977 * pointer to buffer with description string 5978 **/ 5979 static const char *ipr_ioa_info(struct Scsi_Host *host) 5980 { 5981 static char buffer[512]; 5982 struct ipr_ioa_cfg *ioa_cfg; 5983 unsigned long lock_flags = 0; 5984 5985 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 5986 5987 spin_lock_irqsave(host->host_lock, lock_flags); 5988 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 5989 spin_unlock_irqrestore(host->host_lock, lock_flags); 5990 5991 return buffer; 5992 } 5993 5994 static struct scsi_host_template driver_template = { 5995 .module = THIS_MODULE, 5996 .name = "IPR", 5997 .info = ipr_ioa_info, 5998 .ioctl = ipr_ioctl, 5999 .queuecommand = ipr_queuecommand, 6000 .eh_abort_handler = ipr_eh_abort, 6001 .eh_device_reset_handler = ipr_eh_dev_reset, 6002 .eh_host_reset_handler = ipr_eh_host_reset, 6003 .slave_alloc = ipr_slave_alloc, 6004 .slave_configure = ipr_slave_configure, 6005 .slave_destroy = ipr_slave_destroy, 6006 .target_alloc = ipr_target_alloc, 6007 .target_destroy = ipr_target_destroy, 6008 .change_queue_depth = ipr_change_queue_depth, 6009 .change_queue_type = ipr_change_queue_type, 6010 .bios_param = ipr_biosparam, 6011 .can_queue = IPR_MAX_COMMANDS, 6012 .this_id = -1, 6013 .sg_tablesize = IPR_MAX_SGLIST, 6014 .max_sectors = IPR_IOA_MAX_SECTORS, 6015 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 6016 .use_clustering = ENABLE_CLUSTERING, 6017 .shost_attrs = ipr_ioa_attrs, 6018 .sdev_attrs = ipr_dev_attrs, 6019 .proc_name = IPR_NAME 6020 }; 6021 6022 /** 6023 * ipr_ata_phy_reset - libata phy_reset handler 6024 * @ap: ata port to reset 6025 * 6026 **/ 6027 static void ipr_ata_phy_reset(struct ata_port *ap) 6028 { 6029 unsigned long flags; 6030 struct ipr_sata_port *sata_port = ap->private_data; 6031 struct ipr_resource_entry *res = sata_port->res; 6032 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 6033 int rc; 6034 6035 ENTER; 6036 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6037 while (ioa_cfg->in_reset_reload) { 6038 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6039 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6040 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6041 } 6042 6043 if (!ioa_cfg->allow_cmds) 6044 goto out_unlock; 6045 6046 rc = ipr_device_reset(ioa_cfg, res); 6047 6048 if (rc) { 6049 ap->link.device[0].class = ATA_DEV_NONE; 6050 goto out_unlock; 6051 } 6052 6053 ap->link.device[0].class = res->ata_class; 6054 if (ap->link.device[0].class == ATA_DEV_UNKNOWN) 6055 ap->link.device[0].class = ATA_DEV_NONE; 6056 6057 out_unlock: 6058 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6059 LEAVE; 6060 } 6061 6062 /** 6063 * ipr_ata_post_internal - Cleanup after an internal command 6064 * @qc: ATA queued command 6065 * 6066 * Return value: 6067 * none 6068 **/ 6069 static void ipr_ata_post_internal(struct ata_queued_cmd *qc) 6070 { 6071 struct ipr_sata_port *sata_port = qc->ap->private_data; 6072 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 6073 struct ipr_cmnd *ipr_cmd; 6074 unsigned long flags; 6075 6076 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6077 while (ioa_cfg->in_reset_reload) { 6078 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6079 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6080 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6081 } 6082 6083 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 6084 if (ipr_cmd->qc == qc) { 6085 ipr_device_reset(ioa_cfg, sata_port->res); 6086 break; 6087 } 6088 } 6089 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6090 } 6091 6092 /** 6093 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure 6094 * @regs: destination 6095 * @tf: source ATA taskfile 6096 * 6097 * Return value: 6098 * none 6099 **/ 6100 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs, 6101 struct ata_taskfile *tf) 6102 { 6103 regs->feature = tf->feature; 6104 regs->nsect = tf->nsect; 6105 regs->lbal = tf->lbal; 6106 regs->lbam = tf->lbam; 6107 regs->lbah = tf->lbah; 6108 regs->device = tf->device; 6109 regs->command = tf->command; 6110 regs->hob_feature = tf->hob_feature; 6111 regs->hob_nsect = tf->hob_nsect; 6112 regs->hob_lbal = tf->hob_lbal; 6113 regs->hob_lbam = tf->hob_lbam; 6114 regs->hob_lbah = tf->hob_lbah; 6115 regs->ctl = tf->ctl; 6116 } 6117 6118 /** 6119 * ipr_sata_done - done function for SATA commands 6120 * @ipr_cmd: ipr command struct 6121 * 6122 * This function is invoked by the interrupt handler for 6123 * ops generated by the SCSI mid-layer to SATA devices 6124 * 6125 * Return value: 6126 * none 6127 **/ 6128 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd) 6129 { 6130 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6131 struct ata_queued_cmd *qc = ipr_cmd->qc; 6132 struct ipr_sata_port *sata_port = qc->ap->private_data; 6133 struct ipr_resource_entry *res = sata_port->res; 6134 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6135 6136 if (ipr_cmd->ioa_cfg->sis64) 6137 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata, 6138 sizeof(struct ipr_ioasa_gata)); 6139 else 6140 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata, 6141 sizeof(struct ipr_ioasa_gata)); 6142 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 6143 6144 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET) 6145 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target); 6146 6147 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 6148 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status); 6149 else 6150 qc->err_mask |= ac_err_mask(sata_port->ioasa.status); 6151 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6152 ata_qc_complete(qc); 6153 } 6154 6155 /** 6156 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list 6157 * @ipr_cmd: ipr command struct 6158 * @qc: ATA queued command 6159 * 6160 **/ 6161 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd, 6162 struct ata_queued_cmd *qc) 6163 { 6164 u32 ioadl_flags = 0; 6165 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6166 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 6167 struct ipr_ioadl64_desc *last_ioadl64 = NULL; 6168 int len = qc->nbytes; 6169 struct scatterlist *sg; 6170 unsigned int si; 6171 dma_addr_t dma_addr = ipr_cmd->dma_addr; 6172 6173 if (len == 0) 6174 return; 6175 6176 if (qc->dma_dir == DMA_TO_DEVICE) { 6177 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 6178 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6179 } else if (qc->dma_dir == DMA_FROM_DEVICE) 6180 ioadl_flags = IPR_IOADL_FLAGS_READ; 6181 6182 ioarcb->data_transfer_length = cpu_to_be32(len); 6183 ioarcb->ioadl_len = 6184 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 6185 ioarcb->u.sis64_addr_data.data_ioadl_addr = 6186 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl)); 6187 6188 for_each_sg(qc->sg, sg, qc->n_elem, si) { 6189 ioadl64->flags = cpu_to_be32(ioadl_flags); 6190 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg)); 6191 ioadl64->address = cpu_to_be64(sg_dma_address(sg)); 6192 6193 last_ioadl64 = ioadl64; 6194 ioadl64++; 6195 } 6196 6197 if (likely(last_ioadl64)) 6198 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 6199 } 6200 6201 /** 6202 * ipr_build_ata_ioadl - Build an ATA scatter/gather list 6203 * @ipr_cmd: ipr command struct 6204 * @qc: ATA queued command 6205 * 6206 **/ 6207 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, 6208 struct ata_queued_cmd *qc) 6209 { 6210 u32 ioadl_flags = 0; 6211 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6212 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 6213 struct ipr_ioadl_desc *last_ioadl = NULL; 6214 int len = qc->nbytes; 6215 struct scatterlist *sg; 6216 unsigned int si; 6217 6218 if (len == 0) 6219 return; 6220 6221 if (qc->dma_dir == DMA_TO_DEVICE) { 6222 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 6223 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6224 ioarcb->data_transfer_length = cpu_to_be32(len); 6225 ioarcb->ioadl_len = 6226 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 6227 } else if (qc->dma_dir == DMA_FROM_DEVICE) { 6228 ioadl_flags = IPR_IOADL_FLAGS_READ; 6229 ioarcb->read_data_transfer_length = cpu_to_be32(len); 6230 ioarcb->read_ioadl_len = 6231 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 6232 } 6233 6234 for_each_sg(qc->sg, sg, qc->n_elem, si) { 6235 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 6236 ioadl->address = cpu_to_be32(sg_dma_address(sg)); 6237 6238 last_ioadl = ioadl; 6239 ioadl++; 6240 } 6241 6242 if (likely(last_ioadl)) 6243 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 6244 } 6245 6246 /** 6247 * ipr_qc_issue - Issue a SATA qc to a device 6248 * @qc: queued command 6249 * 6250 * Return value: 6251 * 0 if success 6252 **/ 6253 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) 6254 { 6255 struct ata_port *ap = qc->ap; 6256 struct ipr_sata_port *sata_port = ap->private_data; 6257 struct ipr_resource_entry *res = sata_port->res; 6258 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 6259 struct ipr_cmnd *ipr_cmd; 6260 struct ipr_ioarcb *ioarcb; 6261 struct ipr_ioarcb_ata_regs *regs; 6262 6263 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead)) 6264 return AC_ERR_SYSTEM; 6265 6266 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 6267 ioarcb = &ipr_cmd->ioarcb; 6268 6269 if (ioa_cfg->sis64) { 6270 regs = &ipr_cmd->i.ata_ioadl.regs; 6271 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb)); 6272 } else 6273 regs = &ioarcb->u.add_data.u.regs; 6274 6275 memset(regs, 0, sizeof(*regs)); 6276 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs)); 6277 6278 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 6279 ipr_cmd->qc = qc; 6280 ipr_cmd->done = ipr_sata_done; 6281 ipr_cmd->ioarcb.res_handle = res->res_handle; 6282 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU; 6283 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 6284 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6285 ipr_cmd->dma_use_sg = qc->n_elem; 6286 6287 if (ioa_cfg->sis64) 6288 ipr_build_ata_ioadl64(ipr_cmd, qc); 6289 else 6290 ipr_build_ata_ioadl(ipr_cmd, qc); 6291 6292 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 6293 ipr_copy_sata_tf(regs, &qc->tf); 6294 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN); 6295 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res)); 6296 6297 switch (qc->tf.protocol) { 6298 case ATA_PROT_NODATA: 6299 case ATA_PROT_PIO: 6300 break; 6301 6302 case ATA_PROT_DMA: 6303 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 6304 break; 6305 6306 case ATAPI_PROT_PIO: 6307 case ATAPI_PROT_NODATA: 6308 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 6309 break; 6310 6311 case ATAPI_PROT_DMA: 6312 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 6313 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 6314 break; 6315 6316 default: 6317 WARN_ON(1); 6318 return AC_ERR_INVALID; 6319 } 6320 6321 ipr_send_command(ipr_cmd); 6322 6323 return 0; 6324 } 6325 6326 /** 6327 * ipr_qc_fill_rtf - Read result TF 6328 * @qc: ATA queued command 6329 * 6330 * Return value: 6331 * true 6332 **/ 6333 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc) 6334 { 6335 struct ipr_sata_port *sata_port = qc->ap->private_data; 6336 struct ipr_ioasa_gata *g = &sata_port->ioasa; 6337 struct ata_taskfile *tf = &qc->result_tf; 6338 6339 tf->feature = g->error; 6340 tf->nsect = g->nsect; 6341 tf->lbal = g->lbal; 6342 tf->lbam = g->lbam; 6343 tf->lbah = g->lbah; 6344 tf->device = g->device; 6345 tf->command = g->status; 6346 tf->hob_nsect = g->hob_nsect; 6347 tf->hob_lbal = g->hob_lbal; 6348 tf->hob_lbam = g->hob_lbam; 6349 tf->hob_lbah = g->hob_lbah; 6350 tf->ctl = g->alt_status; 6351 6352 return true; 6353 } 6354 6355 static struct ata_port_operations ipr_sata_ops = { 6356 .phy_reset = ipr_ata_phy_reset, 6357 .hardreset = ipr_sata_reset, 6358 .post_internal_cmd = ipr_ata_post_internal, 6359 .qc_prep = ata_noop_qc_prep, 6360 .qc_issue = ipr_qc_issue, 6361 .qc_fill_rtf = ipr_qc_fill_rtf, 6362 .port_start = ata_sas_port_start, 6363 .port_stop = ata_sas_port_stop 6364 }; 6365 6366 static struct ata_port_info sata_port_info = { 6367 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA, 6368 .pio_mask = ATA_PIO4_ONLY, 6369 .mwdma_mask = ATA_MWDMA2, 6370 .udma_mask = ATA_UDMA6, 6371 .port_ops = &ipr_sata_ops 6372 }; 6373 6374 #ifdef CONFIG_PPC_PSERIES 6375 static const u16 ipr_blocked_processors[] = { 6376 PVR_NORTHSTAR, 6377 PVR_PULSAR, 6378 PVR_POWER4, 6379 PVR_ICESTAR, 6380 PVR_SSTAR, 6381 PVR_POWER4p, 6382 PVR_630, 6383 PVR_630p 6384 }; 6385 6386 /** 6387 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 6388 * @ioa_cfg: ioa cfg struct 6389 * 6390 * Adapters that use Gemstone revision < 3.1 do not work reliably on 6391 * certain pSeries hardware. This function determines if the given 6392 * adapter is in one of these confgurations or not. 6393 * 6394 * Return value: 6395 * 1 if adapter is not supported / 0 if adapter is supported 6396 **/ 6397 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 6398 { 6399 int i; 6400 6401 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) { 6402 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) { 6403 if (pvr_version_is(ipr_blocked_processors[i])) 6404 return 1; 6405 } 6406 } 6407 return 0; 6408 } 6409 #else 6410 #define ipr_invalid_adapter(ioa_cfg) 0 6411 #endif 6412 6413 /** 6414 * ipr_ioa_bringdown_done - IOA bring down completion. 6415 * @ipr_cmd: ipr command struct 6416 * 6417 * This function processes the completion of an adapter bring down. 6418 * It wakes any reset sleepers. 6419 * 6420 * Return value: 6421 * IPR_RC_JOB_RETURN 6422 **/ 6423 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 6424 { 6425 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6426 6427 ENTER; 6428 ioa_cfg->in_reset_reload = 0; 6429 ioa_cfg->reset_retries = 0; 6430 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6431 wake_up_all(&ioa_cfg->reset_wait_q); 6432 6433 spin_unlock_irq(ioa_cfg->host->host_lock); 6434 scsi_unblock_requests(ioa_cfg->host); 6435 spin_lock_irq(ioa_cfg->host->host_lock); 6436 LEAVE; 6437 6438 return IPR_RC_JOB_RETURN; 6439 } 6440 6441 /** 6442 * ipr_ioa_reset_done - IOA reset completion. 6443 * @ipr_cmd: ipr command struct 6444 * 6445 * This function processes the completion of an adapter reset. 6446 * It schedules any necessary mid-layer add/removes and 6447 * wakes any reset sleepers. 6448 * 6449 * Return value: 6450 * IPR_RC_JOB_RETURN 6451 **/ 6452 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 6453 { 6454 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6455 struct ipr_resource_entry *res; 6456 struct ipr_hostrcb *hostrcb, *temp; 6457 int i = 0; 6458 6459 ENTER; 6460 ioa_cfg->in_reset_reload = 0; 6461 ioa_cfg->allow_cmds = 1; 6462 ioa_cfg->reset_cmd = NULL; 6463 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 6464 6465 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 6466 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { 6467 ipr_trace; 6468 break; 6469 } 6470 } 6471 schedule_work(&ioa_cfg->work_q); 6472 6473 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { 6474 list_del(&hostrcb->queue); 6475 if (i++ < IPR_NUM_LOG_HCAMS) 6476 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 6477 else 6478 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 6479 } 6480 6481 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS); 6482 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 6483 6484 ioa_cfg->reset_retries = 0; 6485 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6486 wake_up_all(&ioa_cfg->reset_wait_q); 6487 6488 spin_unlock(ioa_cfg->host->host_lock); 6489 scsi_unblock_requests(ioa_cfg->host); 6490 spin_lock(ioa_cfg->host->host_lock); 6491 6492 if (!ioa_cfg->allow_cmds) 6493 scsi_block_requests(ioa_cfg->host); 6494 6495 LEAVE; 6496 return IPR_RC_JOB_RETURN; 6497 } 6498 6499 /** 6500 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 6501 * @supported_dev: supported device struct 6502 * @vpids: vendor product id struct 6503 * 6504 * Return value: 6505 * none 6506 **/ 6507 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 6508 struct ipr_std_inq_vpids *vpids) 6509 { 6510 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 6511 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 6512 supported_dev->num_records = 1; 6513 supported_dev->data_length = 6514 cpu_to_be16(sizeof(struct ipr_supported_device)); 6515 supported_dev->reserved = 0; 6516 } 6517 6518 /** 6519 * ipr_set_supported_devs - Send Set Supported Devices for a device 6520 * @ipr_cmd: ipr command struct 6521 * 6522 * This function sends a Set Supported Devices to the adapter 6523 * 6524 * Return value: 6525 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6526 **/ 6527 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 6528 { 6529 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6530 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 6531 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6532 struct ipr_resource_entry *res = ipr_cmd->u.res; 6533 6534 ipr_cmd->job_step = ipr_ioa_reset_done; 6535 6536 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 6537 if (!ipr_is_scsi_disk(res)) 6538 continue; 6539 6540 ipr_cmd->u.res = res; 6541 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids); 6542 6543 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6544 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6545 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6546 6547 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 6548 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES; 6549 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 6550 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 6551 6552 ipr_init_ioadl(ipr_cmd, 6553 ioa_cfg->vpd_cbs_dma + 6554 offsetof(struct ipr_misc_cbs, supp_dev), 6555 sizeof(struct ipr_supported_device), 6556 IPR_IOADL_FLAGS_WRITE_LAST); 6557 6558 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 6559 IPR_SET_SUP_DEVICE_TIMEOUT); 6560 6561 if (!ioa_cfg->sis64) 6562 ipr_cmd->job_step = ipr_set_supported_devs; 6563 return IPR_RC_JOB_RETURN; 6564 } 6565 6566 return IPR_RC_JOB_CONTINUE; 6567 } 6568 6569 /** 6570 * ipr_get_mode_page - Locate specified mode page 6571 * @mode_pages: mode page buffer 6572 * @page_code: page code to find 6573 * @len: minimum required length for mode page 6574 * 6575 * Return value: 6576 * pointer to mode page / NULL on failure 6577 **/ 6578 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 6579 u32 page_code, u32 len) 6580 { 6581 struct ipr_mode_page_hdr *mode_hdr; 6582 u32 page_length; 6583 u32 length; 6584 6585 if (!mode_pages || (mode_pages->hdr.length == 0)) 6586 return NULL; 6587 6588 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 6589 mode_hdr = (struct ipr_mode_page_hdr *) 6590 (mode_pages->data + mode_pages->hdr.block_desc_len); 6591 6592 while (length) { 6593 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 6594 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 6595 return mode_hdr; 6596 break; 6597 } else { 6598 page_length = (sizeof(struct ipr_mode_page_hdr) + 6599 mode_hdr->page_length); 6600 length -= page_length; 6601 mode_hdr = (struct ipr_mode_page_hdr *) 6602 ((unsigned long)mode_hdr + page_length); 6603 } 6604 } 6605 return NULL; 6606 } 6607 6608 /** 6609 * ipr_check_term_power - Check for term power errors 6610 * @ioa_cfg: ioa config struct 6611 * @mode_pages: IOAFP mode pages buffer 6612 * 6613 * Check the IOAFP's mode page 28 for term power errors 6614 * 6615 * Return value: 6616 * nothing 6617 **/ 6618 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 6619 struct ipr_mode_pages *mode_pages) 6620 { 6621 int i; 6622 int entry_length; 6623 struct ipr_dev_bus_entry *bus; 6624 struct ipr_mode_page28 *mode_page; 6625 6626 mode_page = ipr_get_mode_page(mode_pages, 0x28, 6627 sizeof(struct ipr_mode_page28)); 6628 6629 entry_length = mode_page->entry_length; 6630 6631 bus = mode_page->bus; 6632 6633 for (i = 0; i < mode_page->num_entries; i++) { 6634 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 6635 dev_err(&ioa_cfg->pdev->dev, 6636 "Term power is absent on scsi bus %d\n", 6637 bus->res_addr.bus); 6638 } 6639 6640 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 6641 } 6642 } 6643 6644 /** 6645 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 6646 * @ioa_cfg: ioa config struct 6647 * 6648 * Looks through the config table checking for SES devices. If 6649 * the SES device is in the SES table indicating a maximum SCSI 6650 * bus speed, the speed is limited for the bus. 6651 * 6652 * Return value: 6653 * none 6654 **/ 6655 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 6656 { 6657 u32 max_xfer_rate; 6658 int i; 6659 6660 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 6661 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 6662 ioa_cfg->bus_attr[i].bus_width); 6663 6664 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 6665 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 6666 } 6667 } 6668 6669 /** 6670 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 6671 * @ioa_cfg: ioa config struct 6672 * @mode_pages: mode page 28 buffer 6673 * 6674 * Updates mode page 28 based on driver configuration 6675 * 6676 * Return value: 6677 * none 6678 **/ 6679 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 6680 struct ipr_mode_pages *mode_pages) 6681 { 6682 int i, entry_length; 6683 struct ipr_dev_bus_entry *bus; 6684 struct ipr_bus_attributes *bus_attr; 6685 struct ipr_mode_page28 *mode_page; 6686 6687 mode_page = ipr_get_mode_page(mode_pages, 0x28, 6688 sizeof(struct ipr_mode_page28)); 6689 6690 entry_length = mode_page->entry_length; 6691 6692 /* Loop for each device bus entry */ 6693 for (i = 0, bus = mode_page->bus; 6694 i < mode_page->num_entries; 6695 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 6696 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 6697 dev_err(&ioa_cfg->pdev->dev, 6698 "Invalid resource address reported: 0x%08X\n", 6699 IPR_GET_PHYS_LOC(bus->res_addr)); 6700 continue; 6701 } 6702 6703 bus_attr = &ioa_cfg->bus_attr[i]; 6704 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 6705 bus->bus_width = bus_attr->bus_width; 6706 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 6707 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 6708 if (bus_attr->qas_enabled) 6709 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 6710 else 6711 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 6712 } 6713 } 6714 6715 /** 6716 * ipr_build_mode_select - Build a mode select command 6717 * @ipr_cmd: ipr command struct 6718 * @res_handle: resource handle to send command to 6719 * @parm: Byte 2 of Mode Sense command 6720 * @dma_addr: DMA buffer address 6721 * @xfer_len: data transfer length 6722 * 6723 * Return value: 6724 * none 6725 **/ 6726 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 6727 __be32 res_handle, u8 parm, 6728 dma_addr_t dma_addr, u8 xfer_len) 6729 { 6730 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6731 6732 ioarcb->res_handle = res_handle; 6733 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6734 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6735 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 6736 ioarcb->cmd_pkt.cdb[1] = parm; 6737 ioarcb->cmd_pkt.cdb[4] = xfer_len; 6738 6739 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST); 6740 } 6741 6742 /** 6743 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 6744 * @ipr_cmd: ipr command struct 6745 * 6746 * This function sets up the SCSI bus attributes and sends 6747 * a Mode Select for Page 28 to activate them. 6748 * 6749 * Return value: 6750 * IPR_RC_JOB_RETURN 6751 **/ 6752 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 6753 { 6754 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6755 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 6756 int length; 6757 6758 ENTER; 6759 ipr_scsi_bus_speed_limit(ioa_cfg); 6760 ipr_check_term_power(ioa_cfg, mode_pages); 6761 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 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_set_supported_devs; 6770 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 6771 struct ipr_resource_entry, queue); 6772 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6773 6774 LEAVE; 6775 return IPR_RC_JOB_RETURN; 6776 } 6777 6778 /** 6779 * ipr_build_mode_sense - Builds a mode sense command 6780 * @ipr_cmd: ipr command struct 6781 * @res: resource entry struct 6782 * @parm: Byte 2 of mode sense command 6783 * @dma_addr: DMA address of mode sense buffer 6784 * @xfer_len: Size of DMA buffer 6785 * 6786 * Return value: 6787 * none 6788 **/ 6789 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 6790 __be32 res_handle, 6791 u8 parm, dma_addr_t dma_addr, u8 xfer_len) 6792 { 6793 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6794 6795 ioarcb->res_handle = res_handle; 6796 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 6797 ioarcb->cmd_pkt.cdb[2] = parm; 6798 ioarcb->cmd_pkt.cdb[4] = xfer_len; 6799 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6800 6801 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 6802 } 6803 6804 /** 6805 * ipr_reset_cmd_failed - Handle failure of IOA reset command 6806 * @ipr_cmd: ipr command struct 6807 * 6808 * This function handles the failure of an IOA bringup command. 6809 * 6810 * Return value: 6811 * IPR_RC_JOB_RETURN 6812 **/ 6813 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 6814 { 6815 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6816 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6817 6818 dev_err(&ioa_cfg->pdev->dev, 6819 "0x%02X failed with IOASC: 0x%08X\n", 6820 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 6821 6822 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6823 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6824 return IPR_RC_JOB_RETURN; 6825 } 6826 6827 /** 6828 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 6829 * @ipr_cmd: ipr command struct 6830 * 6831 * This function handles the failure of a Mode Sense to the IOAFP. 6832 * Some adapters do not handle all mode pages. 6833 * 6834 * Return value: 6835 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6836 **/ 6837 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 6838 { 6839 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6840 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6841 6842 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 6843 ipr_cmd->job_step = ipr_set_supported_devs; 6844 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 6845 struct ipr_resource_entry, queue); 6846 return IPR_RC_JOB_CONTINUE; 6847 } 6848 6849 return ipr_reset_cmd_failed(ipr_cmd); 6850 } 6851 6852 /** 6853 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 6854 * @ipr_cmd: ipr command struct 6855 * 6856 * This function send a Page 28 mode sense to the IOA to 6857 * retrieve SCSI bus attributes. 6858 * 6859 * Return value: 6860 * IPR_RC_JOB_RETURN 6861 **/ 6862 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 6863 { 6864 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6865 6866 ENTER; 6867 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 6868 0x28, ioa_cfg->vpd_cbs_dma + 6869 offsetof(struct ipr_misc_cbs, mode_pages), 6870 sizeof(struct ipr_mode_pages)); 6871 6872 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 6873 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 6874 6875 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6876 6877 LEAVE; 6878 return IPR_RC_JOB_RETURN; 6879 } 6880 6881 /** 6882 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA 6883 * @ipr_cmd: ipr command struct 6884 * 6885 * This function enables dual IOA RAID support if possible. 6886 * 6887 * Return value: 6888 * IPR_RC_JOB_RETURN 6889 **/ 6890 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd) 6891 { 6892 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6893 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 6894 struct ipr_mode_page24 *mode_page; 6895 int length; 6896 6897 ENTER; 6898 mode_page = ipr_get_mode_page(mode_pages, 0x24, 6899 sizeof(struct ipr_mode_page24)); 6900 6901 if (mode_page) 6902 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF; 6903 6904 length = mode_pages->hdr.length + 1; 6905 mode_pages->hdr.length = 0; 6906 6907 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 6908 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 6909 length); 6910 6911 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 6912 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6913 6914 LEAVE; 6915 return IPR_RC_JOB_RETURN; 6916 } 6917 6918 /** 6919 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense 6920 * @ipr_cmd: ipr command struct 6921 * 6922 * This function handles the failure of a Mode Sense to the IOAFP. 6923 * Some adapters do not handle all mode pages. 6924 * 6925 * Return value: 6926 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6927 **/ 6928 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd) 6929 { 6930 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6931 6932 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 6933 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 6934 return IPR_RC_JOB_CONTINUE; 6935 } 6936 6937 return ipr_reset_cmd_failed(ipr_cmd); 6938 } 6939 6940 /** 6941 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA 6942 * @ipr_cmd: ipr command struct 6943 * 6944 * This function send a mode sense to the IOA to retrieve 6945 * the IOA Advanced Function Control mode page. 6946 * 6947 * Return value: 6948 * IPR_RC_JOB_RETURN 6949 **/ 6950 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd) 6951 { 6952 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6953 6954 ENTER; 6955 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 6956 0x24, ioa_cfg->vpd_cbs_dma + 6957 offsetof(struct ipr_misc_cbs, mode_pages), 6958 sizeof(struct ipr_mode_pages)); 6959 6960 ipr_cmd->job_step = ipr_ioafp_mode_select_page24; 6961 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed; 6962 6963 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6964 6965 LEAVE; 6966 return IPR_RC_JOB_RETURN; 6967 } 6968 6969 /** 6970 * ipr_init_res_table - Initialize the resource table 6971 * @ipr_cmd: ipr command struct 6972 * 6973 * This function looks through the existing resource table, comparing 6974 * it with the config table. This function will take care of old/new 6975 * devices and schedule adding/removing them from the mid-layer 6976 * as appropriate. 6977 * 6978 * Return value: 6979 * IPR_RC_JOB_CONTINUE 6980 **/ 6981 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 6982 { 6983 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6984 struct ipr_resource_entry *res, *temp; 6985 struct ipr_config_table_entry_wrapper cfgtew; 6986 int entries, found, flag, i; 6987 LIST_HEAD(old_res); 6988 6989 ENTER; 6990 if (ioa_cfg->sis64) 6991 flag = ioa_cfg->u.cfg_table64->hdr64.flags; 6992 else 6993 flag = ioa_cfg->u.cfg_table->hdr.flags; 6994 6995 if (flag & IPR_UCODE_DOWNLOAD_REQ) 6996 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 6997 6998 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 6999 list_move_tail(&res->queue, &old_res); 7000 7001 if (ioa_cfg->sis64) 7002 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries); 7003 else 7004 entries = ioa_cfg->u.cfg_table->hdr.num_entries; 7005 7006 for (i = 0; i < entries; i++) { 7007 if (ioa_cfg->sis64) 7008 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i]; 7009 else 7010 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i]; 7011 found = 0; 7012 7013 list_for_each_entry_safe(res, temp, &old_res, queue) { 7014 if (ipr_is_same_device(res, &cfgtew)) { 7015 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7016 found = 1; 7017 break; 7018 } 7019 } 7020 7021 if (!found) { 7022 if (list_empty(&ioa_cfg->free_res_q)) { 7023 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 7024 break; 7025 } 7026 7027 found = 1; 7028 res = list_entry(ioa_cfg->free_res_q.next, 7029 struct ipr_resource_entry, queue); 7030 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7031 ipr_init_res_entry(res, &cfgtew); 7032 res->add_to_ml = 1; 7033 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))) 7034 res->sdev->allow_restart = 1; 7035 7036 if (found) 7037 ipr_update_res_entry(res, &cfgtew); 7038 } 7039 7040 list_for_each_entry_safe(res, temp, &old_res, queue) { 7041 if (res->sdev) { 7042 res->del_from_ml = 1; 7043 res->res_handle = IPR_INVALID_RES_HANDLE; 7044 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 7045 } 7046 } 7047 7048 list_for_each_entry_safe(res, temp, &old_res, queue) { 7049 ipr_clear_res_target(res); 7050 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 7051 } 7052 7053 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 7054 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24; 7055 else 7056 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 7057 7058 LEAVE; 7059 return IPR_RC_JOB_CONTINUE; 7060 } 7061 7062 /** 7063 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 7064 * @ipr_cmd: ipr command struct 7065 * 7066 * This function sends a Query IOA Configuration command 7067 * to the adapter to retrieve the IOA configuration table. 7068 * 7069 * Return value: 7070 * IPR_RC_JOB_RETURN 7071 **/ 7072 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 7073 { 7074 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7075 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7076 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 7077 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 7078 7079 ENTER; 7080 if (cap->cap & IPR_CAP_DUAL_IOA_RAID) 7081 ioa_cfg->dual_raid = 1; 7082 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 7083 ucode_vpd->major_release, ucode_vpd->card_type, 7084 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 7085 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7086 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7087 7088 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 7089 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff; 7090 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff; 7091 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff; 7092 7093 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size, 7094 IPR_IOADL_FLAGS_READ_LAST); 7095 7096 ipr_cmd->job_step = ipr_init_res_table; 7097 7098 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7099 7100 LEAVE; 7101 return IPR_RC_JOB_RETURN; 7102 } 7103 7104 /** 7105 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 7106 * @ipr_cmd: ipr command struct 7107 * 7108 * This utility function sends an inquiry to the adapter. 7109 * 7110 * Return value: 7111 * none 7112 **/ 7113 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 7114 dma_addr_t dma_addr, u8 xfer_len) 7115 { 7116 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7117 7118 ENTER; 7119 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 7120 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7121 7122 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 7123 ioarcb->cmd_pkt.cdb[1] = flags; 7124 ioarcb->cmd_pkt.cdb[2] = page; 7125 ioarcb->cmd_pkt.cdb[4] = xfer_len; 7126 7127 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 7128 7129 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7130 LEAVE; 7131 } 7132 7133 /** 7134 * ipr_inquiry_page_supported - Is the given inquiry page supported 7135 * @page0: inquiry page 0 buffer 7136 * @page: page code. 7137 * 7138 * This function determines if the specified inquiry page is supported. 7139 * 7140 * Return value: 7141 * 1 if page is supported / 0 if not 7142 **/ 7143 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 7144 { 7145 int i; 7146 7147 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 7148 if (page0->page[i] == page) 7149 return 1; 7150 7151 return 0; 7152 } 7153 7154 /** 7155 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter. 7156 * @ipr_cmd: ipr command struct 7157 * 7158 * This function sends a Page 0xD0 inquiry to the adapter 7159 * to retrieve adapter capabilities. 7160 * 7161 * Return value: 7162 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7163 **/ 7164 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd) 7165 { 7166 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7167 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 7168 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 7169 7170 ENTER; 7171 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 7172 memset(cap, 0, sizeof(*cap)); 7173 7174 if (ipr_inquiry_page_supported(page0, 0xD0)) { 7175 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0, 7176 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap), 7177 sizeof(struct ipr_inquiry_cap)); 7178 return IPR_RC_JOB_RETURN; 7179 } 7180 7181 LEAVE; 7182 return IPR_RC_JOB_CONTINUE; 7183 } 7184 7185 /** 7186 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 7187 * @ipr_cmd: ipr command struct 7188 * 7189 * This function sends a Page 3 inquiry to the adapter 7190 * to retrieve software VPD information. 7191 * 7192 * Return value: 7193 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7194 **/ 7195 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 7196 { 7197 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7198 7199 ENTER; 7200 7201 ipr_cmd->job_step = ipr_ioafp_cap_inquiry; 7202 7203 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 7204 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 7205 sizeof(struct ipr_inquiry_page3)); 7206 7207 LEAVE; 7208 return IPR_RC_JOB_RETURN; 7209 } 7210 7211 /** 7212 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 7213 * @ipr_cmd: ipr command struct 7214 * 7215 * This function sends a Page 0 inquiry to the adapter 7216 * to retrieve supported inquiry pages. 7217 * 7218 * Return value: 7219 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7220 **/ 7221 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 7222 { 7223 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7224 char type[5]; 7225 7226 ENTER; 7227 7228 /* Grab the type out of the VPD and store it away */ 7229 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 7230 type[4] = '\0'; 7231 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 7232 7233 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 7234 7235 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 7236 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 7237 sizeof(struct ipr_inquiry_page0)); 7238 7239 LEAVE; 7240 return IPR_RC_JOB_RETURN; 7241 } 7242 7243 /** 7244 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 7245 * @ipr_cmd: ipr command struct 7246 * 7247 * This function sends a standard inquiry to the adapter. 7248 * 7249 * Return value: 7250 * IPR_RC_JOB_RETURN 7251 **/ 7252 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 7253 { 7254 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7255 7256 ENTER; 7257 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 7258 7259 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 7260 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 7261 sizeof(struct ipr_ioa_vpd)); 7262 7263 LEAVE; 7264 return IPR_RC_JOB_RETURN; 7265 } 7266 7267 /** 7268 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ. 7269 * @ipr_cmd: ipr command struct 7270 * 7271 * This function send an Identify Host Request Response Queue 7272 * command to establish the HRRQ with the adapter. 7273 * 7274 * Return value: 7275 * IPR_RC_JOB_RETURN 7276 **/ 7277 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd) 7278 { 7279 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7280 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7281 7282 ENTER; 7283 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 7284 7285 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 7286 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7287 7288 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7289 if (ioa_cfg->sis64) 7290 ioarcb->cmd_pkt.cdb[1] = 0x1; 7291 ioarcb->cmd_pkt.cdb[2] = 7292 ((u64) ioa_cfg->host_rrq_dma >> 24) & 0xff; 7293 ioarcb->cmd_pkt.cdb[3] = 7294 ((u64) ioa_cfg->host_rrq_dma >> 16) & 0xff; 7295 ioarcb->cmd_pkt.cdb[4] = 7296 ((u64) ioa_cfg->host_rrq_dma >> 8) & 0xff; 7297 ioarcb->cmd_pkt.cdb[5] = 7298 ((u64) ioa_cfg->host_rrq_dma) & 0xff; 7299 ioarcb->cmd_pkt.cdb[7] = 7300 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; 7301 ioarcb->cmd_pkt.cdb[8] = 7302 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; 7303 7304 if (ioa_cfg->sis64) { 7305 ioarcb->cmd_pkt.cdb[10] = 7306 ((u64) ioa_cfg->host_rrq_dma >> 56) & 0xff; 7307 ioarcb->cmd_pkt.cdb[11] = 7308 ((u64) ioa_cfg->host_rrq_dma >> 48) & 0xff; 7309 ioarcb->cmd_pkt.cdb[12] = 7310 ((u64) ioa_cfg->host_rrq_dma >> 40) & 0xff; 7311 ioarcb->cmd_pkt.cdb[13] = 7312 ((u64) ioa_cfg->host_rrq_dma >> 32) & 0xff; 7313 } 7314 7315 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 7316 7317 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7318 7319 LEAVE; 7320 return IPR_RC_JOB_RETURN; 7321 } 7322 7323 /** 7324 * ipr_reset_timer_done - Adapter reset timer function 7325 * @ipr_cmd: ipr command struct 7326 * 7327 * Description: This function is used in adapter reset processing 7328 * for timing events. If the reset_cmd pointer in the IOA 7329 * config struct is not this adapter's we are doing nested 7330 * resets and fail_all_ops will take care of freeing the 7331 * command block. 7332 * 7333 * Return value: 7334 * none 7335 **/ 7336 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 7337 { 7338 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7339 unsigned long lock_flags = 0; 7340 7341 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 7342 7343 if (ioa_cfg->reset_cmd == ipr_cmd) { 7344 list_del(&ipr_cmd->queue); 7345 ipr_cmd->done(ipr_cmd); 7346 } 7347 7348 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 7349 } 7350 7351 /** 7352 * ipr_reset_start_timer - Start a timer for adapter reset job 7353 * @ipr_cmd: ipr command struct 7354 * @timeout: timeout value 7355 * 7356 * Description: This function is used in adapter reset processing 7357 * for timing events. If the reset_cmd pointer in the IOA 7358 * config struct is not this adapter's we are doing nested 7359 * resets and fail_all_ops will take care of freeing the 7360 * command block. 7361 * 7362 * Return value: 7363 * none 7364 **/ 7365 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 7366 unsigned long timeout) 7367 { 7368 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 7369 ipr_cmd->done = ipr_reset_ioa_job; 7370 7371 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 7372 ipr_cmd->timer.expires = jiffies + timeout; 7373 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 7374 add_timer(&ipr_cmd->timer); 7375 } 7376 7377 /** 7378 * ipr_init_ioa_mem - Initialize ioa_cfg control block 7379 * @ioa_cfg: ioa cfg struct 7380 * 7381 * Return value: 7382 * nothing 7383 **/ 7384 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 7385 { 7386 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); 7387 7388 /* Initialize Host RRQ pointers */ 7389 ioa_cfg->hrrq_start = ioa_cfg->host_rrq; 7390 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; 7391 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 7392 ioa_cfg->toggle_bit = 1; 7393 7394 /* Zero out config table */ 7395 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size); 7396 } 7397 7398 /** 7399 * ipr_reset_next_stage - Process IPL stage change based on feedback register. 7400 * @ipr_cmd: ipr command struct 7401 * 7402 * Return value: 7403 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7404 **/ 7405 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd) 7406 { 7407 unsigned long stage, stage_time; 7408 u32 feedback; 7409 volatile u32 int_reg; 7410 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7411 u64 maskval = 0; 7412 7413 feedback = readl(ioa_cfg->regs.init_feedback_reg); 7414 stage = feedback & IPR_IPL_INIT_STAGE_MASK; 7415 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK; 7416 7417 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time); 7418 7419 /* sanity check the stage_time value */ 7420 if (stage_time == 0) 7421 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME; 7422 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME) 7423 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME; 7424 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT) 7425 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT; 7426 7427 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) { 7428 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg); 7429 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7430 stage_time = ioa_cfg->transop_timeout; 7431 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 7432 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) { 7433 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 7434 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 7435 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 7436 maskval = IPR_PCII_IPL_STAGE_CHANGE; 7437 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER; 7438 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg); 7439 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7440 return IPR_RC_JOB_CONTINUE; 7441 } 7442 } 7443 7444 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 7445 ipr_cmd->timer.expires = jiffies + stage_time * HZ; 7446 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 7447 ipr_cmd->done = ipr_reset_ioa_job; 7448 add_timer(&ipr_cmd->timer); 7449 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 7450 7451 return IPR_RC_JOB_RETURN; 7452 } 7453 7454 /** 7455 * ipr_reset_enable_ioa - Enable the IOA following a reset. 7456 * @ipr_cmd: ipr command struct 7457 * 7458 * This function reinitializes some control blocks and 7459 * enables destructive diagnostics on the adapter. 7460 * 7461 * Return value: 7462 * IPR_RC_JOB_RETURN 7463 **/ 7464 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 7465 { 7466 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7467 volatile u32 int_reg; 7468 volatile u64 maskval; 7469 7470 ENTER; 7471 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 7472 ipr_init_ioa_mem(ioa_cfg); 7473 7474 ioa_cfg->allow_interrupts = 1; 7475 if (ioa_cfg->sis64) { 7476 /* Set the adapter to the correct endian mode. */ 7477 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg); 7478 int_reg = readl(ioa_cfg->regs.endian_swap_reg); 7479 } 7480 7481 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 7482 7483 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 7484 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 7485 ioa_cfg->regs.clr_interrupt_mask_reg32); 7486 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7487 return IPR_RC_JOB_CONTINUE; 7488 } 7489 7490 /* Enable destructive diagnostics on IOA */ 7491 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32); 7492 7493 if (ioa_cfg->sis64) { 7494 maskval = IPR_PCII_IPL_STAGE_CHANGE; 7495 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS; 7496 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg); 7497 } else 7498 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32); 7499 7500 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7501 7502 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 7503 7504 if (ioa_cfg->sis64) { 7505 ipr_cmd->job_step = ipr_reset_next_stage; 7506 return IPR_RC_JOB_CONTINUE; 7507 } 7508 7509 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 7510 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ); 7511 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 7512 ipr_cmd->done = ipr_reset_ioa_job; 7513 add_timer(&ipr_cmd->timer); 7514 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 7515 7516 LEAVE; 7517 return IPR_RC_JOB_RETURN; 7518 } 7519 7520 /** 7521 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 7522 * @ipr_cmd: ipr command struct 7523 * 7524 * This function is invoked when an adapter dump has run out 7525 * of processing time. 7526 * 7527 * Return value: 7528 * IPR_RC_JOB_CONTINUE 7529 **/ 7530 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 7531 { 7532 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7533 7534 if (ioa_cfg->sdt_state == GET_DUMP) 7535 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 7536 else if (ioa_cfg->sdt_state == READ_DUMP) 7537 ioa_cfg->sdt_state = ABORT_DUMP; 7538 7539 ioa_cfg->dump_timeout = 1; 7540 ipr_cmd->job_step = ipr_reset_alert; 7541 7542 return IPR_RC_JOB_CONTINUE; 7543 } 7544 7545 /** 7546 * ipr_unit_check_no_data - Log a unit check/no data error log 7547 * @ioa_cfg: ioa config struct 7548 * 7549 * Logs an error indicating the adapter unit checked, but for some 7550 * reason, we were unable to fetch the unit check buffer. 7551 * 7552 * Return value: 7553 * nothing 7554 **/ 7555 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 7556 { 7557 ioa_cfg->errors_logged++; 7558 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 7559 } 7560 7561 /** 7562 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 7563 * @ioa_cfg: ioa config struct 7564 * 7565 * Fetches the unit check buffer from the adapter by clocking the data 7566 * through the mailbox register. 7567 * 7568 * Return value: 7569 * nothing 7570 **/ 7571 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 7572 { 7573 unsigned long mailbox; 7574 struct ipr_hostrcb *hostrcb; 7575 struct ipr_uc_sdt sdt; 7576 int rc, length; 7577 u32 ioasc; 7578 7579 mailbox = readl(ioa_cfg->ioa_mailbox); 7580 7581 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) { 7582 ipr_unit_check_no_data(ioa_cfg); 7583 return; 7584 } 7585 7586 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 7587 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 7588 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 7589 7590 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) || 7591 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) && 7592 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) { 7593 ipr_unit_check_no_data(ioa_cfg); 7594 return; 7595 } 7596 7597 /* Find length of the first sdt entry (UC buffer) */ 7598 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE) 7599 length = be32_to_cpu(sdt.entry[0].end_token); 7600 else 7601 length = (be32_to_cpu(sdt.entry[0].end_token) - 7602 be32_to_cpu(sdt.entry[0].start_token)) & 7603 IPR_FMT2_MBX_ADDR_MASK; 7604 7605 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 7606 struct ipr_hostrcb, queue); 7607 list_del(&hostrcb->queue); 7608 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 7609 7610 rc = ipr_get_ldump_data_section(ioa_cfg, 7611 be32_to_cpu(sdt.entry[0].start_token), 7612 (__be32 *)&hostrcb->hcam, 7613 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 7614 7615 if (!rc) { 7616 ipr_handle_log_data(ioa_cfg, hostrcb); 7617 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 7618 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED && 7619 ioa_cfg->sdt_state == GET_DUMP) 7620 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 7621 } else 7622 ipr_unit_check_no_data(ioa_cfg); 7623 7624 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 7625 } 7626 7627 /** 7628 * ipr_reset_get_unit_check_job - Call to get the unit check buffer. 7629 * @ipr_cmd: ipr command struct 7630 * 7631 * Description: This function will call to get the unit check buffer. 7632 * 7633 * Return value: 7634 * IPR_RC_JOB_RETURN 7635 **/ 7636 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd) 7637 { 7638 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7639 7640 ENTER; 7641 ioa_cfg->ioa_unit_checked = 0; 7642 ipr_get_unit_check_buffer(ioa_cfg); 7643 ipr_cmd->job_step = ipr_reset_alert; 7644 ipr_reset_start_timer(ipr_cmd, 0); 7645 7646 LEAVE; 7647 return IPR_RC_JOB_RETURN; 7648 } 7649 7650 /** 7651 * ipr_reset_restore_cfg_space - Restore PCI config space. 7652 * @ipr_cmd: ipr command struct 7653 * 7654 * Description: This function restores the saved PCI config space of 7655 * the adapter, fails all outstanding ops back to the callers, and 7656 * fetches the dump/unit check if applicable to this reset. 7657 * 7658 * Return value: 7659 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7660 **/ 7661 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 7662 { 7663 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7664 u32 int_reg; 7665 7666 ENTER; 7667 ioa_cfg->pdev->state_saved = true; 7668 pci_restore_state(ioa_cfg->pdev); 7669 7670 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 7671 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 7672 return IPR_RC_JOB_CONTINUE; 7673 } 7674 7675 ipr_fail_all_ops(ioa_cfg); 7676 7677 if (ioa_cfg->sis64) { 7678 /* Set the adapter to the correct endian mode. */ 7679 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg); 7680 int_reg = readl(ioa_cfg->regs.endian_swap_reg); 7681 } 7682 7683 if (ioa_cfg->ioa_unit_checked) { 7684 if (ioa_cfg->sis64) { 7685 ipr_cmd->job_step = ipr_reset_get_unit_check_job; 7686 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT); 7687 return IPR_RC_JOB_RETURN; 7688 } else { 7689 ioa_cfg->ioa_unit_checked = 0; 7690 ipr_get_unit_check_buffer(ioa_cfg); 7691 ipr_cmd->job_step = ipr_reset_alert; 7692 ipr_reset_start_timer(ipr_cmd, 0); 7693 return IPR_RC_JOB_RETURN; 7694 } 7695 } 7696 7697 if (ioa_cfg->in_ioa_bringdown) { 7698 ipr_cmd->job_step = ipr_ioa_bringdown_done; 7699 } else { 7700 ipr_cmd->job_step = ipr_reset_enable_ioa; 7701 7702 if (GET_DUMP == ioa_cfg->sdt_state) { 7703 ioa_cfg->sdt_state = READ_DUMP; 7704 ioa_cfg->dump_timeout = 0; 7705 if (ioa_cfg->sis64) 7706 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT); 7707 else 7708 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT); 7709 ipr_cmd->job_step = ipr_reset_wait_for_dump; 7710 schedule_work(&ioa_cfg->work_q); 7711 return IPR_RC_JOB_RETURN; 7712 } 7713 } 7714 7715 LEAVE; 7716 return IPR_RC_JOB_CONTINUE; 7717 } 7718 7719 /** 7720 * ipr_reset_bist_done - BIST has completed on the adapter. 7721 * @ipr_cmd: ipr command struct 7722 * 7723 * Description: Unblock config space and resume the reset process. 7724 * 7725 * Return value: 7726 * IPR_RC_JOB_CONTINUE 7727 **/ 7728 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd) 7729 { 7730 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7731 7732 ENTER; 7733 if (ioa_cfg->cfg_locked) 7734 pci_cfg_access_unlock(ioa_cfg->pdev); 7735 ioa_cfg->cfg_locked = 0; 7736 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 7737 LEAVE; 7738 return IPR_RC_JOB_CONTINUE; 7739 } 7740 7741 /** 7742 * ipr_reset_start_bist - Run BIST on the adapter. 7743 * @ipr_cmd: ipr command struct 7744 * 7745 * Description: This function runs BIST on the adapter, then delays 2 seconds. 7746 * 7747 * Return value: 7748 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7749 **/ 7750 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 7751 { 7752 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7753 int rc = PCIBIOS_SUCCESSFUL; 7754 7755 ENTER; 7756 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO) 7757 writel(IPR_UPROCI_SIS64_START_BIST, 7758 ioa_cfg->regs.set_uproc_interrupt_reg32); 7759 else 7760 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 7761 7762 if (rc == PCIBIOS_SUCCESSFUL) { 7763 ipr_cmd->job_step = ipr_reset_bist_done; 7764 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 7765 rc = IPR_RC_JOB_RETURN; 7766 } else { 7767 if (ioa_cfg->cfg_locked) 7768 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev); 7769 ioa_cfg->cfg_locked = 0; 7770 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 7771 rc = IPR_RC_JOB_CONTINUE; 7772 } 7773 7774 LEAVE; 7775 return rc; 7776 } 7777 7778 /** 7779 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter 7780 * @ipr_cmd: ipr command struct 7781 * 7782 * Description: This clears PCI reset to the adapter and delays two seconds. 7783 * 7784 * Return value: 7785 * IPR_RC_JOB_RETURN 7786 **/ 7787 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd) 7788 { 7789 ENTER; 7790 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset); 7791 ipr_cmd->job_step = ipr_reset_bist_done; 7792 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 7793 LEAVE; 7794 return IPR_RC_JOB_RETURN; 7795 } 7796 7797 /** 7798 * ipr_reset_slot_reset - Reset the PCI slot of the adapter. 7799 * @ipr_cmd: ipr command struct 7800 * 7801 * Description: This asserts PCI reset to the adapter. 7802 * 7803 * Return value: 7804 * IPR_RC_JOB_RETURN 7805 **/ 7806 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd) 7807 { 7808 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7809 struct pci_dev *pdev = ioa_cfg->pdev; 7810 7811 ENTER; 7812 pci_set_pcie_reset_state(pdev, pcie_warm_reset); 7813 ipr_cmd->job_step = ipr_reset_slot_reset_done; 7814 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT); 7815 LEAVE; 7816 return IPR_RC_JOB_RETURN; 7817 } 7818 7819 /** 7820 * ipr_reset_block_config_access_wait - Wait for permission to block config access 7821 * @ipr_cmd: ipr command struct 7822 * 7823 * Description: This attempts to block config access to the IOA. 7824 * 7825 * Return value: 7826 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7827 **/ 7828 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd) 7829 { 7830 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7831 int rc = IPR_RC_JOB_CONTINUE; 7832 7833 if (pci_cfg_access_trylock(ioa_cfg->pdev)) { 7834 ioa_cfg->cfg_locked = 1; 7835 ipr_cmd->job_step = ioa_cfg->reset; 7836 } else { 7837 if (ipr_cmd->u.time_left) { 7838 rc = IPR_RC_JOB_RETURN; 7839 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 7840 ipr_reset_start_timer(ipr_cmd, 7841 IPR_CHECK_FOR_RESET_TIMEOUT); 7842 } else { 7843 ipr_cmd->job_step = ioa_cfg->reset; 7844 dev_err(&ioa_cfg->pdev->dev, 7845 "Timed out waiting to lock config access. Resetting anyway.\n"); 7846 } 7847 } 7848 7849 return rc; 7850 } 7851 7852 /** 7853 * ipr_reset_block_config_access - Block config access to the IOA 7854 * @ipr_cmd: ipr command struct 7855 * 7856 * Description: This attempts to block config access to the IOA 7857 * 7858 * Return value: 7859 * IPR_RC_JOB_CONTINUE 7860 **/ 7861 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd) 7862 { 7863 ipr_cmd->ioa_cfg->cfg_locked = 0; 7864 ipr_cmd->job_step = ipr_reset_block_config_access_wait; 7865 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 7866 return IPR_RC_JOB_CONTINUE; 7867 } 7868 7869 /** 7870 * ipr_reset_allowed - Query whether or not IOA can be reset 7871 * @ioa_cfg: ioa config struct 7872 * 7873 * Return value: 7874 * 0 if reset not allowed / non-zero if reset is allowed 7875 **/ 7876 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 7877 { 7878 volatile u32 temp_reg; 7879 7880 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 7881 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 7882 } 7883 7884 /** 7885 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 7886 * @ipr_cmd: ipr command struct 7887 * 7888 * Description: This function waits for adapter permission to run BIST, 7889 * then runs BIST. If the adapter does not give permission after a 7890 * reasonable time, we will reset the adapter anyway. The impact of 7891 * resetting the adapter without warning the adapter is the risk of 7892 * losing the persistent error log on the adapter. If the adapter is 7893 * reset while it is writing to the flash on the adapter, the flash 7894 * segment will have bad ECC and be zeroed. 7895 * 7896 * Return value: 7897 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7898 **/ 7899 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 7900 { 7901 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7902 int rc = IPR_RC_JOB_RETURN; 7903 7904 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 7905 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 7906 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 7907 } else { 7908 ipr_cmd->job_step = ipr_reset_block_config_access; 7909 rc = IPR_RC_JOB_CONTINUE; 7910 } 7911 7912 return rc; 7913 } 7914 7915 /** 7916 * ipr_reset_alert - Alert the adapter of a pending reset 7917 * @ipr_cmd: ipr command struct 7918 * 7919 * Description: This function alerts the adapter that it will be reset. 7920 * If memory space is not currently enabled, proceed directly 7921 * to running BIST on the adapter. The timer must always be started 7922 * so we guarantee we do not run BIST from ipr_isr. 7923 * 7924 * Return value: 7925 * IPR_RC_JOB_RETURN 7926 **/ 7927 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 7928 { 7929 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7930 u16 cmd_reg; 7931 int rc; 7932 7933 ENTER; 7934 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 7935 7936 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 7937 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 7938 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32); 7939 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 7940 } else { 7941 ipr_cmd->job_step = ipr_reset_block_config_access; 7942 } 7943 7944 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 7945 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 7946 7947 LEAVE; 7948 return IPR_RC_JOB_RETURN; 7949 } 7950 7951 /** 7952 * ipr_reset_ucode_download_done - Microcode download completion 7953 * @ipr_cmd: ipr command struct 7954 * 7955 * Description: This function unmaps the microcode download buffer. 7956 * 7957 * Return value: 7958 * IPR_RC_JOB_CONTINUE 7959 **/ 7960 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 7961 { 7962 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7963 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 7964 7965 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, 7966 sglist->num_sg, DMA_TO_DEVICE); 7967 7968 ipr_cmd->job_step = ipr_reset_alert; 7969 return IPR_RC_JOB_CONTINUE; 7970 } 7971 7972 /** 7973 * ipr_reset_ucode_download - Download microcode to the adapter 7974 * @ipr_cmd: ipr command struct 7975 * 7976 * Description: This function checks to see if it there is microcode 7977 * to download to the adapter. If there is, a download is performed. 7978 * 7979 * Return value: 7980 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7981 **/ 7982 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 7983 { 7984 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7985 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 7986 7987 ENTER; 7988 ipr_cmd->job_step = ipr_reset_alert; 7989 7990 if (!sglist) 7991 return IPR_RC_JOB_CONTINUE; 7992 7993 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7994 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 7995 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 7996 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 7997 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 7998 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 7999 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 8000 8001 if (ioa_cfg->sis64) 8002 ipr_build_ucode_ioadl64(ipr_cmd, sglist); 8003 else 8004 ipr_build_ucode_ioadl(ipr_cmd, sglist); 8005 ipr_cmd->job_step = ipr_reset_ucode_download_done; 8006 8007 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 8008 IPR_WRITE_BUFFER_TIMEOUT); 8009 8010 LEAVE; 8011 return IPR_RC_JOB_RETURN; 8012 } 8013 8014 /** 8015 * ipr_reset_shutdown_ioa - Shutdown the adapter 8016 * @ipr_cmd: ipr command struct 8017 * 8018 * Description: This function issues an adapter shutdown of the 8019 * specified type to the specified adapter as part of the 8020 * adapter reset job. 8021 * 8022 * Return value: 8023 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 8024 **/ 8025 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 8026 { 8027 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8028 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 8029 unsigned long timeout; 8030 int rc = IPR_RC_JOB_CONTINUE; 8031 8032 ENTER; 8033 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { 8034 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 8035 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 8036 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 8037 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 8038 8039 if (shutdown_type == IPR_SHUTDOWN_NORMAL) 8040 timeout = IPR_SHUTDOWN_TIMEOUT; 8041 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 8042 timeout = IPR_INTERNAL_TIMEOUT; 8043 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 8044 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO; 8045 else 8046 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 8047 8048 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 8049 8050 rc = IPR_RC_JOB_RETURN; 8051 ipr_cmd->job_step = ipr_reset_ucode_download; 8052 } else 8053 ipr_cmd->job_step = ipr_reset_alert; 8054 8055 LEAVE; 8056 return rc; 8057 } 8058 8059 /** 8060 * ipr_reset_ioa_job - Adapter reset job 8061 * @ipr_cmd: ipr command struct 8062 * 8063 * Description: This function is the job router for the adapter reset job. 8064 * 8065 * Return value: 8066 * none 8067 **/ 8068 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 8069 { 8070 u32 rc, ioasc; 8071 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 8072 8073 do { 8074 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 8075 8076 if (ioa_cfg->reset_cmd != ipr_cmd) { 8077 /* 8078 * We are doing nested adapter resets and this is 8079 * not the current reset job. 8080 */ 8081 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 8082 return; 8083 } 8084 8085 if (IPR_IOASC_SENSE_KEY(ioasc)) { 8086 rc = ipr_cmd->job_step_failed(ipr_cmd); 8087 if (rc == IPR_RC_JOB_RETURN) 8088 return; 8089 } 8090 8091 ipr_reinit_ipr_cmnd(ipr_cmd); 8092 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 8093 rc = ipr_cmd->job_step(ipr_cmd); 8094 } while (rc == IPR_RC_JOB_CONTINUE); 8095 } 8096 8097 /** 8098 * _ipr_initiate_ioa_reset - Initiate an adapter reset 8099 * @ioa_cfg: ioa config struct 8100 * @job_step: first job step of reset job 8101 * @shutdown_type: shutdown type 8102 * 8103 * Description: This function will initiate the reset of the given adapter 8104 * starting at the selected job step. 8105 * If the caller needs to wait on the completion of the reset, 8106 * the caller must sleep on the reset_wait_q. 8107 * 8108 * Return value: 8109 * none 8110 **/ 8111 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 8112 int (*job_step) (struct ipr_cmnd *), 8113 enum ipr_shutdown_type shutdown_type) 8114 { 8115 struct ipr_cmnd *ipr_cmd; 8116 8117 ioa_cfg->in_reset_reload = 1; 8118 ioa_cfg->allow_cmds = 0; 8119 scsi_block_requests(ioa_cfg->host); 8120 8121 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 8122 ioa_cfg->reset_cmd = ipr_cmd; 8123 ipr_cmd->job_step = job_step; 8124 ipr_cmd->u.shutdown_type = shutdown_type; 8125 8126 ipr_reset_ioa_job(ipr_cmd); 8127 } 8128 8129 /** 8130 * ipr_initiate_ioa_reset - Initiate an adapter reset 8131 * @ioa_cfg: ioa config struct 8132 * @shutdown_type: shutdown type 8133 * 8134 * Description: This function will initiate the reset of the given adapter. 8135 * If the caller needs to wait on the completion of the reset, 8136 * the caller must sleep on the reset_wait_q. 8137 * 8138 * Return value: 8139 * none 8140 **/ 8141 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 8142 enum ipr_shutdown_type shutdown_type) 8143 { 8144 if (ioa_cfg->ioa_is_dead) 8145 return; 8146 8147 if (ioa_cfg->in_reset_reload) { 8148 if (ioa_cfg->sdt_state == GET_DUMP) 8149 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 8150 else if (ioa_cfg->sdt_state == READ_DUMP) 8151 ioa_cfg->sdt_state = ABORT_DUMP; 8152 } 8153 8154 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 8155 dev_err(&ioa_cfg->pdev->dev, 8156 "IOA taken offline - error recovery failed\n"); 8157 8158 ioa_cfg->reset_retries = 0; 8159 ioa_cfg->ioa_is_dead = 1; 8160 8161 if (ioa_cfg->in_ioa_bringdown) { 8162 ioa_cfg->reset_cmd = NULL; 8163 ioa_cfg->in_reset_reload = 0; 8164 ipr_fail_all_ops(ioa_cfg); 8165 wake_up_all(&ioa_cfg->reset_wait_q); 8166 8167 spin_unlock_irq(ioa_cfg->host->host_lock); 8168 scsi_unblock_requests(ioa_cfg->host); 8169 spin_lock_irq(ioa_cfg->host->host_lock); 8170 return; 8171 } else { 8172 ioa_cfg->in_ioa_bringdown = 1; 8173 shutdown_type = IPR_SHUTDOWN_NONE; 8174 } 8175 } 8176 8177 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 8178 shutdown_type); 8179 } 8180 8181 /** 8182 * ipr_reset_freeze - Hold off all I/O activity 8183 * @ipr_cmd: ipr command struct 8184 * 8185 * Description: If the PCI slot is frozen, hold off all I/O 8186 * activity; then, as soon as the slot is available again, 8187 * initiate an adapter reset. 8188 */ 8189 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 8190 { 8191 /* Disallow new interrupts, avoid loop */ 8192 ipr_cmd->ioa_cfg->allow_interrupts = 0; 8193 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 8194 ipr_cmd->done = ipr_reset_ioa_job; 8195 return IPR_RC_JOB_RETURN; 8196 } 8197 8198 /** 8199 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 8200 * @pdev: PCI device struct 8201 * 8202 * Description: This routine is called to tell us that the PCI bus 8203 * is down. Can't do anything here, except put the device driver 8204 * into a holding pattern, waiting for the PCI bus to come back. 8205 */ 8206 static void ipr_pci_frozen(struct pci_dev *pdev) 8207 { 8208 unsigned long flags = 0; 8209 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8210 8211 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 8212 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 8213 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 8214 } 8215 8216 /** 8217 * ipr_pci_slot_reset - Called when PCI slot has been reset. 8218 * @pdev: PCI device struct 8219 * 8220 * Description: This routine is called by the pci error recovery 8221 * code after the PCI slot has been reset, just before we 8222 * should resume normal operations. 8223 */ 8224 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 8225 { 8226 unsigned long flags = 0; 8227 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8228 8229 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 8230 if (ioa_cfg->needs_warm_reset) 8231 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8232 else 8233 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 8234 IPR_SHUTDOWN_NONE); 8235 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 8236 return PCI_ERS_RESULT_RECOVERED; 8237 } 8238 8239 /** 8240 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 8241 * @pdev: PCI device struct 8242 * 8243 * Description: This routine is called when the PCI bus has 8244 * permanently failed. 8245 */ 8246 static void ipr_pci_perm_failure(struct pci_dev *pdev) 8247 { 8248 unsigned long flags = 0; 8249 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8250 8251 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 8252 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 8253 ioa_cfg->sdt_state = ABORT_DUMP; 8254 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES; 8255 ioa_cfg->in_ioa_bringdown = 1; 8256 ioa_cfg->allow_cmds = 0; 8257 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8258 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 8259 } 8260 8261 /** 8262 * ipr_pci_error_detected - Called when a PCI error is detected. 8263 * @pdev: PCI device struct 8264 * @state: PCI channel state 8265 * 8266 * Description: Called when a PCI error is detected. 8267 * 8268 * Return value: 8269 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 8270 */ 8271 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 8272 pci_channel_state_t state) 8273 { 8274 switch (state) { 8275 case pci_channel_io_frozen: 8276 ipr_pci_frozen(pdev); 8277 return PCI_ERS_RESULT_NEED_RESET; 8278 case pci_channel_io_perm_failure: 8279 ipr_pci_perm_failure(pdev); 8280 return PCI_ERS_RESULT_DISCONNECT; 8281 break; 8282 default: 8283 break; 8284 } 8285 return PCI_ERS_RESULT_NEED_RESET; 8286 } 8287 8288 /** 8289 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 8290 * @ioa_cfg: ioa cfg struct 8291 * 8292 * Description: This is the second phase of adapter intialization 8293 * This function takes care of initilizing the adapter to the point 8294 * where it can accept new commands. 8295 8296 * Return value: 8297 * 0 on success / -EIO on failure 8298 **/ 8299 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 8300 { 8301 int rc = 0; 8302 unsigned long host_lock_flags = 0; 8303 8304 ENTER; 8305 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 8306 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 8307 if (ioa_cfg->needs_hard_reset) { 8308 ioa_cfg->needs_hard_reset = 0; 8309 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8310 } else 8311 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 8312 IPR_SHUTDOWN_NONE); 8313 8314 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 8315 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 8316 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 8317 8318 if (ioa_cfg->ioa_is_dead) { 8319 rc = -EIO; 8320 } else if (ipr_invalid_adapter(ioa_cfg)) { 8321 if (!ipr_testmode) 8322 rc = -EIO; 8323 8324 dev_err(&ioa_cfg->pdev->dev, 8325 "Adapter not supported in this hardware configuration.\n"); 8326 } 8327 8328 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 8329 8330 LEAVE; 8331 return rc; 8332 } 8333 8334 /** 8335 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 8336 * @ioa_cfg: ioa config struct 8337 * 8338 * Return value: 8339 * none 8340 **/ 8341 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 8342 { 8343 int i; 8344 8345 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 8346 if (ioa_cfg->ipr_cmnd_list[i]) 8347 pci_pool_free(ioa_cfg->ipr_cmd_pool, 8348 ioa_cfg->ipr_cmnd_list[i], 8349 ioa_cfg->ipr_cmnd_list_dma[i]); 8350 8351 ioa_cfg->ipr_cmnd_list[i] = NULL; 8352 } 8353 8354 if (ioa_cfg->ipr_cmd_pool) 8355 pci_pool_destroy(ioa_cfg->ipr_cmd_pool); 8356 8357 kfree(ioa_cfg->ipr_cmnd_list); 8358 kfree(ioa_cfg->ipr_cmnd_list_dma); 8359 ioa_cfg->ipr_cmnd_list = NULL; 8360 ioa_cfg->ipr_cmnd_list_dma = NULL; 8361 ioa_cfg->ipr_cmd_pool = NULL; 8362 } 8363 8364 /** 8365 * ipr_free_mem - Frees memory allocated for an adapter 8366 * @ioa_cfg: ioa cfg struct 8367 * 8368 * Return value: 8369 * nothing 8370 **/ 8371 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 8372 { 8373 int i; 8374 8375 kfree(ioa_cfg->res_entries); 8376 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), 8377 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 8378 ipr_free_cmd_blks(ioa_cfg); 8379 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 8380 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 8381 pci_free_consistent(ioa_cfg->pdev, ioa_cfg->cfg_table_size, 8382 ioa_cfg->u.cfg_table, 8383 ioa_cfg->cfg_table_dma); 8384 8385 for (i = 0; i < IPR_NUM_HCAMS; i++) { 8386 pci_free_consistent(ioa_cfg->pdev, 8387 sizeof(struct ipr_hostrcb), 8388 ioa_cfg->hostrcb[i], 8389 ioa_cfg->hostrcb_dma[i]); 8390 } 8391 8392 ipr_free_dump(ioa_cfg); 8393 kfree(ioa_cfg->trace); 8394 } 8395 8396 /** 8397 * ipr_free_all_resources - Free all allocated resources for an adapter. 8398 * @ipr_cmd: ipr command struct 8399 * 8400 * This function frees all allocated resources for the 8401 * specified adapter. 8402 * 8403 * Return value: 8404 * none 8405 **/ 8406 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 8407 { 8408 struct pci_dev *pdev = ioa_cfg->pdev; 8409 8410 ENTER; 8411 free_irq(pdev->irq, ioa_cfg); 8412 pci_disable_msi(pdev); 8413 iounmap(ioa_cfg->hdw_dma_regs); 8414 pci_release_regions(pdev); 8415 ipr_free_mem(ioa_cfg); 8416 scsi_host_put(ioa_cfg->host); 8417 pci_disable_device(pdev); 8418 LEAVE; 8419 } 8420 8421 /** 8422 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 8423 * @ioa_cfg: ioa config struct 8424 * 8425 * Return value: 8426 * 0 on success / -ENOMEM on allocation failure 8427 **/ 8428 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 8429 { 8430 struct ipr_cmnd *ipr_cmd; 8431 struct ipr_ioarcb *ioarcb; 8432 dma_addr_t dma_addr; 8433 int i; 8434 8435 ioa_cfg->ipr_cmd_pool = pci_pool_create(IPR_NAME, ioa_cfg->pdev, 8436 sizeof(struct ipr_cmnd), 512, 0); 8437 8438 if (!ioa_cfg->ipr_cmd_pool) 8439 return -ENOMEM; 8440 8441 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL); 8442 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL); 8443 8444 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) { 8445 ipr_free_cmd_blks(ioa_cfg); 8446 return -ENOMEM; 8447 } 8448 8449 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 8450 ipr_cmd = pci_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr); 8451 8452 if (!ipr_cmd) { 8453 ipr_free_cmd_blks(ioa_cfg); 8454 return -ENOMEM; 8455 } 8456 8457 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 8458 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 8459 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 8460 8461 ioarcb = &ipr_cmd->ioarcb; 8462 ipr_cmd->dma_addr = dma_addr; 8463 if (ioa_cfg->sis64) 8464 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr); 8465 else 8466 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 8467 8468 ioarcb->host_response_handle = cpu_to_be32(i << 2); 8469 if (ioa_cfg->sis64) { 8470 ioarcb->u.sis64_addr_data.data_ioadl_addr = 8471 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 8472 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr = 8473 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64)); 8474 } else { 8475 ioarcb->write_ioadl_addr = 8476 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 8477 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 8478 ioarcb->ioasa_host_pci_addr = 8479 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa)); 8480 } 8481 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 8482 ipr_cmd->cmd_index = i; 8483 ipr_cmd->ioa_cfg = ioa_cfg; 8484 ipr_cmd->sense_buffer_dma = dma_addr + 8485 offsetof(struct ipr_cmnd, sense_buffer); 8486 8487 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 8488 } 8489 8490 return 0; 8491 } 8492 8493 /** 8494 * ipr_alloc_mem - Allocate memory for an adapter 8495 * @ioa_cfg: ioa config struct 8496 * 8497 * Return value: 8498 * 0 on success / non-zero for error 8499 **/ 8500 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 8501 { 8502 struct pci_dev *pdev = ioa_cfg->pdev; 8503 int i, rc = -ENOMEM; 8504 8505 ENTER; 8506 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * 8507 ioa_cfg->max_devs_supported, GFP_KERNEL); 8508 8509 if (!ioa_cfg->res_entries) 8510 goto out; 8511 8512 if (ioa_cfg->sis64) { 8513 ioa_cfg->target_ids = kzalloc(sizeof(unsigned long) * 8514 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL); 8515 ioa_cfg->array_ids = kzalloc(sizeof(unsigned long) * 8516 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL); 8517 ioa_cfg->vset_ids = kzalloc(sizeof(unsigned long) * 8518 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL); 8519 } 8520 8521 for (i = 0; i < ioa_cfg->max_devs_supported; i++) { 8522 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 8523 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg; 8524 } 8525 8526 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, 8527 sizeof(struct ipr_misc_cbs), 8528 &ioa_cfg->vpd_cbs_dma); 8529 8530 if (!ioa_cfg->vpd_cbs) 8531 goto out_free_res_entries; 8532 8533 if (ipr_alloc_cmd_blks(ioa_cfg)) 8534 goto out_free_vpd_cbs; 8535 8536 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, 8537 sizeof(u32) * IPR_NUM_CMD_BLKS, 8538 &ioa_cfg->host_rrq_dma); 8539 8540 if (!ioa_cfg->host_rrq) 8541 goto out_ipr_free_cmd_blocks; 8542 8543 ioa_cfg->u.cfg_table = pci_alloc_consistent(ioa_cfg->pdev, 8544 ioa_cfg->cfg_table_size, 8545 &ioa_cfg->cfg_table_dma); 8546 8547 if (!ioa_cfg->u.cfg_table) 8548 goto out_free_host_rrq; 8549 8550 for (i = 0; i < IPR_NUM_HCAMS; i++) { 8551 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, 8552 sizeof(struct ipr_hostrcb), 8553 &ioa_cfg->hostrcb_dma[i]); 8554 8555 if (!ioa_cfg->hostrcb[i]) 8556 goto out_free_hostrcb_dma; 8557 8558 ioa_cfg->hostrcb[i]->hostrcb_dma = 8559 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 8560 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg; 8561 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 8562 } 8563 8564 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * 8565 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 8566 8567 if (!ioa_cfg->trace) 8568 goto out_free_hostrcb_dma; 8569 8570 rc = 0; 8571 out: 8572 LEAVE; 8573 return rc; 8574 8575 out_free_hostrcb_dma: 8576 while (i-- > 0) { 8577 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), 8578 ioa_cfg->hostrcb[i], 8579 ioa_cfg->hostrcb_dma[i]); 8580 } 8581 pci_free_consistent(pdev, ioa_cfg->cfg_table_size, 8582 ioa_cfg->u.cfg_table, 8583 ioa_cfg->cfg_table_dma); 8584 out_free_host_rrq: 8585 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 8586 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 8587 out_ipr_free_cmd_blocks: 8588 ipr_free_cmd_blks(ioa_cfg); 8589 out_free_vpd_cbs: 8590 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), 8591 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 8592 out_free_res_entries: 8593 kfree(ioa_cfg->res_entries); 8594 goto out; 8595 } 8596 8597 /** 8598 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 8599 * @ioa_cfg: ioa config struct 8600 * 8601 * Return value: 8602 * none 8603 **/ 8604 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 8605 { 8606 int i; 8607 8608 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 8609 ioa_cfg->bus_attr[i].bus = i; 8610 ioa_cfg->bus_attr[i].qas_enabled = 0; 8611 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 8612 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 8613 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 8614 else 8615 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 8616 } 8617 } 8618 8619 /** 8620 * ipr_init_ioa_cfg - Initialize IOA config struct 8621 * @ioa_cfg: ioa config struct 8622 * @host: scsi host struct 8623 * @pdev: PCI dev struct 8624 * 8625 * Return value: 8626 * none 8627 **/ 8628 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 8629 struct Scsi_Host *host, struct pci_dev *pdev) 8630 { 8631 const struct ipr_interrupt_offsets *p; 8632 struct ipr_interrupts *t; 8633 void __iomem *base; 8634 8635 ioa_cfg->host = host; 8636 ioa_cfg->pdev = pdev; 8637 ioa_cfg->log_level = ipr_log_level; 8638 ioa_cfg->doorbell = IPR_DOORBELL; 8639 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 8640 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 8641 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); 8642 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); 8643 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 8644 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 8645 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 8646 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 8647 8648 INIT_LIST_HEAD(&ioa_cfg->free_q); 8649 INIT_LIST_HEAD(&ioa_cfg->pending_q); 8650 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 8651 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 8652 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 8653 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 8654 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread); 8655 init_waitqueue_head(&ioa_cfg->reset_wait_q); 8656 init_waitqueue_head(&ioa_cfg->msi_wait_q); 8657 ioa_cfg->sdt_state = INACTIVE; 8658 8659 ipr_initialize_bus_attr(ioa_cfg); 8660 ioa_cfg->max_devs_supported = ipr_max_devs; 8661 8662 if (ioa_cfg->sis64) { 8663 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS; 8664 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET; 8665 if (ipr_max_devs > IPR_MAX_SIS64_DEVS) 8666 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS; 8667 } else { 8668 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 8669 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 8670 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS) 8671 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS; 8672 } 8673 host->max_channel = IPR_MAX_BUS_TO_SCAN; 8674 host->unique_id = host->host_no; 8675 host->max_cmd_len = IPR_MAX_CDB_LEN; 8676 host->can_queue = ioa_cfg->max_cmds; 8677 pci_set_drvdata(pdev, ioa_cfg); 8678 8679 p = &ioa_cfg->chip_cfg->regs; 8680 t = &ioa_cfg->regs; 8681 base = ioa_cfg->hdw_dma_regs; 8682 8683 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 8684 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 8685 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32; 8686 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 8687 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32; 8688 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 8689 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32; 8690 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 8691 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32; 8692 t->ioarrin_reg = base + p->ioarrin_reg; 8693 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 8694 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32; 8695 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 8696 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32; 8697 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 8698 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32; 8699 8700 if (ioa_cfg->sis64) { 8701 t->init_feedback_reg = base + p->init_feedback_reg; 8702 t->dump_addr_reg = base + p->dump_addr_reg; 8703 t->dump_data_reg = base + p->dump_data_reg; 8704 t->endian_swap_reg = base + p->endian_swap_reg; 8705 } 8706 } 8707 8708 /** 8709 * ipr_get_chip_info - Find adapter chip information 8710 * @dev_id: PCI device id struct 8711 * 8712 * Return value: 8713 * ptr to chip information on success / NULL on failure 8714 **/ 8715 static const struct ipr_chip_t * __devinit 8716 ipr_get_chip_info(const struct pci_device_id *dev_id) 8717 { 8718 int i; 8719 8720 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 8721 if (ipr_chip[i].vendor == dev_id->vendor && 8722 ipr_chip[i].device == dev_id->device) 8723 return &ipr_chip[i]; 8724 return NULL; 8725 } 8726 8727 /** 8728 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi(). 8729 * @pdev: PCI device struct 8730 * 8731 * Description: Simply set the msi_received flag to 1 indicating that 8732 * Message Signaled Interrupts are supported. 8733 * 8734 * Return value: 8735 * 0 on success / non-zero on failure 8736 **/ 8737 static irqreturn_t __devinit ipr_test_intr(int irq, void *devp) 8738 { 8739 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 8740 unsigned long lock_flags = 0; 8741 irqreturn_t rc = IRQ_HANDLED; 8742 8743 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8744 8745 ioa_cfg->msi_received = 1; 8746 wake_up(&ioa_cfg->msi_wait_q); 8747 8748 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8749 return rc; 8750 } 8751 8752 /** 8753 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support. 8754 * @pdev: PCI device struct 8755 * 8756 * Description: The return value from pci_enable_msi() can not always be 8757 * trusted. This routine sets up and initiates a test interrupt to determine 8758 * if the interrupt is received via the ipr_test_intr() service routine. 8759 * If the tests fails, the driver will fall back to LSI. 8760 * 8761 * Return value: 8762 * 0 on success / non-zero on failure 8763 **/ 8764 static int __devinit ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, 8765 struct pci_dev *pdev) 8766 { 8767 int rc; 8768 volatile u32 int_reg; 8769 unsigned long lock_flags = 0; 8770 8771 ENTER; 8772 8773 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8774 init_waitqueue_head(&ioa_cfg->msi_wait_q); 8775 ioa_cfg->msi_received = 0; 8776 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 8777 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32); 8778 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8779 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8780 8781 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg); 8782 if (rc) { 8783 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq); 8784 return rc; 8785 } else if (ipr_debug) 8786 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq); 8787 8788 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32); 8789 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 8790 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ); 8791 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 8792 8793 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8794 if (!ioa_cfg->msi_received) { 8795 /* MSI test failed */ 8796 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n"); 8797 rc = -EOPNOTSUPP; 8798 } else if (ipr_debug) 8799 dev_info(&pdev->dev, "MSI test succeeded.\n"); 8800 8801 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8802 8803 free_irq(pdev->irq, ioa_cfg); 8804 8805 LEAVE; 8806 8807 return rc; 8808 } 8809 8810 /** 8811 * ipr_probe_ioa - Allocates memory and does first stage of initialization 8812 * @pdev: PCI device struct 8813 * @dev_id: PCI device id struct 8814 * 8815 * Return value: 8816 * 0 on success / non-zero on failure 8817 **/ 8818 static int __devinit ipr_probe_ioa(struct pci_dev *pdev, 8819 const struct pci_device_id *dev_id) 8820 { 8821 struct ipr_ioa_cfg *ioa_cfg; 8822 struct Scsi_Host *host; 8823 unsigned long ipr_regs_pci; 8824 void __iomem *ipr_regs; 8825 int rc = PCIBIOS_SUCCESSFUL; 8826 volatile u32 mask, uproc, interrupts; 8827 8828 ENTER; 8829 8830 if ((rc = pci_enable_device(pdev))) { 8831 dev_err(&pdev->dev, "Cannot enable adapter\n"); 8832 goto out; 8833 } 8834 8835 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 8836 8837 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 8838 8839 if (!host) { 8840 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 8841 rc = -ENOMEM; 8842 goto out_disable; 8843 } 8844 8845 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 8846 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 8847 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops); 8848 8849 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id); 8850 8851 if (!ioa_cfg->ipr_chip) { 8852 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 8853 dev_id->vendor, dev_id->device); 8854 goto out_scsi_host_put; 8855 } 8856 8857 /* set SIS 32 or SIS 64 */ 8858 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0; 8859 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg; 8860 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr; 8861 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds; 8862 8863 if (ipr_transop_timeout) 8864 ioa_cfg->transop_timeout = ipr_transop_timeout; 8865 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT) 8866 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT; 8867 else 8868 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT; 8869 8870 ioa_cfg->revid = pdev->revision; 8871 8872 ipr_regs_pci = pci_resource_start(pdev, 0); 8873 8874 rc = pci_request_regions(pdev, IPR_NAME); 8875 if (rc < 0) { 8876 dev_err(&pdev->dev, 8877 "Couldn't register memory range of registers\n"); 8878 goto out_scsi_host_put; 8879 } 8880 8881 ipr_regs = pci_ioremap_bar(pdev, 0); 8882 8883 if (!ipr_regs) { 8884 dev_err(&pdev->dev, 8885 "Couldn't map memory range of registers\n"); 8886 rc = -ENOMEM; 8887 goto out_release_regions; 8888 } 8889 8890 ioa_cfg->hdw_dma_regs = ipr_regs; 8891 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 8892 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 8893 8894 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 8895 8896 pci_set_master(pdev); 8897 8898 if (ioa_cfg->sis64) { 8899 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 8900 if (rc < 0) { 8901 dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n"); 8902 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 8903 } 8904 8905 } else 8906 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 8907 8908 if (rc < 0) { 8909 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); 8910 goto cleanup_nomem; 8911 } 8912 8913 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 8914 ioa_cfg->chip_cfg->cache_line_size); 8915 8916 if (rc != PCIBIOS_SUCCESSFUL) { 8917 dev_err(&pdev->dev, "Write of cache line size failed\n"); 8918 rc = -EIO; 8919 goto cleanup_nomem; 8920 } 8921 8922 /* Enable MSI style interrupts if they are supported. */ 8923 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) { 8924 rc = ipr_test_msi(ioa_cfg, pdev); 8925 if (rc == -EOPNOTSUPP) 8926 pci_disable_msi(pdev); 8927 else if (rc) 8928 goto out_msi_disable; 8929 else 8930 dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq); 8931 } else if (ipr_debug) 8932 dev_info(&pdev->dev, "Cannot enable MSI.\n"); 8933 8934 /* Save away PCI config space for use following IOA reset */ 8935 rc = pci_save_state(pdev); 8936 8937 if (rc != PCIBIOS_SUCCESSFUL) { 8938 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 8939 rc = -EIO; 8940 goto out_msi_disable; 8941 } 8942 8943 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 8944 goto out_msi_disable; 8945 8946 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 8947 goto out_msi_disable; 8948 8949 if (ioa_cfg->sis64) 8950 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64) 8951 + ((sizeof(struct ipr_config_table_entry64) 8952 * ioa_cfg->max_devs_supported))); 8953 else 8954 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr) 8955 + ((sizeof(struct ipr_config_table_entry) 8956 * ioa_cfg->max_devs_supported))); 8957 8958 rc = ipr_alloc_mem(ioa_cfg); 8959 if (rc < 0) { 8960 dev_err(&pdev->dev, 8961 "Couldn't allocate enough memory for device driver!\n"); 8962 goto out_msi_disable; 8963 } 8964 8965 /* 8966 * If HRRQ updated interrupt is not masked, or reset alert is set, 8967 * the card is in an unknown state and needs a hard reset 8968 */ 8969 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 8970 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32); 8971 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); 8972 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 8973 ioa_cfg->needs_hard_reset = 1; 8974 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices) 8975 ioa_cfg->needs_hard_reset = 1; 8976 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED) 8977 ioa_cfg->ioa_unit_checked = 1; 8978 8979 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 8980 rc = request_irq(pdev->irq, ipr_isr, 8981 ioa_cfg->msi_received ? 0 : IRQF_SHARED, 8982 IPR_NAME, ioa_cfg); 8983 8984 if (rc) { 8985 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 8986 pdev->irq, rc); 8987 goto cleanup_nolog; 8988 } 8989 8990 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) || 8991 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) { 8992 ioa_cfg->needs_warm_reset = 1; 8993 ioa_cfg->reset = ipr_reset_slot_reset; 8994 } else 8995 ioa_cfg->reset = ipr_reset_start_bist; 8996 8997 spin_lock(&ipr_driver_lock); 8998 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 8999 spin_unlock(&ipr_driver_lock); 9000 9001 LEAVE; 9002 out: 9003 return rc; 9004 9005 cleanup_nolog: 9006 ipr_free_mem(ioa_cfg); 9007 out_msi_disable: 9008 pci_disable_msi(pdev); 9009 cleanup_nomem: 9010 iounmap(ipr_regs); 9011 out_release_regions: 9012 pci_release_regions(pdev); 9013 out_scsi_host_put: 9014 scsi_host_put(host); 9015 out_disable: 9016 pci_disable_device(pdev); 9017 goto out; 9018 } 9019 9020 /** 9021 * ipr_scan_vsets - Scans for VSET devices 9022 * @ioa_cfg: ioa config struct 9023 * 9024 * Description: Since the VSET resources do not follow SAM in that we can have 9025 * sparse LUNs with no LUN 0, we have to scan for these ourselves. 9026 * 9027 * Return value: 9028 * none 9029 **/ 9030 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) 9031 { 9032 int target, lun; 9033 9034 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) 9035 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++) 9036 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); 9037 } 9038 9039 /** 9040 * ipr_initiate_ioa_bringdown - Bring down an adapter 9041 * @ioa_cfg: ioa config struct 9042 * @shutdown_type: shutdown type 9043 * 9044 * Description: This function will initiate bringing down the adapter. 9045 * This consists of issuing an IOA shutdown to the adapter 9046 * to flush the cache, and running BIST. 9047 * If the caller needs to wait on the completion of the reset, 9048 * the caller must sleep on the reset_wait_q. 9049 * 9050 * Return value: 9051 * none 9052 **/ 9053 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 9054 enum ipr_shutdown_type shutdown_type) 9055 { 9056 ENTER; 9057 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 9058 ioa_cfg->sdt_state = ABORT_DUMP; 9059 ioa_cfg->reset_retries = 0; 9060 ioa_cfg->in_ioa_bringdown = 1; 9061 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 9062 LEAVE; 9063 } 9064 9065 /** 9066 * __ipr_remove - Remove a single adapter 9067 * @pdev: pci device struct 9068 * 9069 * Adapter hot plug remove entry point. 9070 * 9071 * Return value: 9072 * none 9073 **/ 9074 static void __ipr_remove(struct pci_dev *pdev) 9075 { 9076 unsigned long host_lock_flags = 0; 9077 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9078 ENTER; 9079 9080 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 9081 while (ioa_cfg->in_reset_reload) { 9082 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 9083 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 9084 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 9085 } 9086 9087 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 9088 9089 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 9090 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 9091 flush_work(&ioa_cfg->work_q); 9092 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 9093 9094 spin_lock(&ipr_driver_lock); 9095 list_del(&ioa_cfg->queue); 9096 spin_unlock(&ipr_driver_lock); 9097 9098 if (ioa_cfg->sdt_state == ABORT_DUMP) 9099 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 9100 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 9101 9102 ipr_free_all_resources(ioa_cfg); 9103 9104 LEAVE; 9105 } 9106 9107 /** 9108 * ipr_remove - IOA hot plug remove entry point 9109 * @pdev: pci device struct 9110 * 9111 * Adapter hot plug remove entry point. 9112 * 9113 * Return value: 9114 * none 9115 **/ 9116 static void __devexit ipr_remove(struct pci_dev *pdev) 9117 { 9118 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9119 9120 ENTER; 9121 9122 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 9123 &ipr_trace_attr); 9124 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj, 9125 &ipr_dump_attr); 9126 scsi_remove_host(ioa_cfg->host); 9127 9128 __ipr_remove(pdev); 9129 9130 LEAVE; 9131 } 9132 9133 /** 9134 * ipr_probe - Adapter hot plug add entry point 9135 * 9136 * Return value: 9137 * 0 on success / non-zero on failure 9138 **/ 9139 static int __devinit ipr_probe(struct pci_dev *pdev, 9140 const struct pci_device_id *dev_id) 9141 { 9142 struct ipr_ioa_cfg *ioa_cfg; 9143 int rc; 9144 9145 rc = ipr_probe_ioa(pdev, dev_id); 9146 9147 if (rc) 9148 return rc; 9149 9150 ioa_cfg = pci_get_drvdata(pdev); 9151 rc = ipr_probe_ioa_part2(ioa_cfg); 9152 9153 if (rc) { 9154 __ipr_remove(pdev); 9155 return rc; 9156 } 9157 9158 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 9159 9160 if (rc) { 9161 __ipr_remove(pdev); 9162 return rc; 9163 } 9164 9165 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj, 9166 &ipr_trace_attr); 9167 9168 if (rc) { 9169 scsi_remove_host(ioa_cfg->host); 9170 __ipr_remove(pdev); 9171 return rc; 9172 } 9173 9174 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj, 9175 &ipr_dump_attr); 9176 9177 if (rc) { 9178 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 9179 &ipr_trace_attr); 9180 scsi_remove_host(ioa_cfg->host); 9181 __ipr_remove(pdev); 9182 return rc; 9183 } 9184 9185 scsi_scan_host(ioa_cfg->host); 9186 ipr_scan_vsets(ioa_cfg); 9187 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); 9188 ioa_cfg->allow_ml_add_del = 1; 9189 ioa_cfg->host->max_channel = IPR_VSET_BUS; 9190 schedule_work(&ioa_cfg->work_q); 9191 return 0; 9192 } 9193 9194 /** 9195 * ipr_shutdown - Shutdown handler. 9196 * @pdev: pci device struct 9197 * 9198 * This function is invoked upon system shutdown/reboot. It will issue 9199 * an adapter shutdown to the adapter to flush the write cache. 9200 * 9201 * Return value: 9202 * none 9203 **/ 9204 static void ipr_shutdown(struct pci_dev *pdev) 9205 { 9206 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 9207 unsigned long lock_flags = 0; 9208 9209 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 9210 while (ioa_cfg->in_reset_reload) { 9211 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 9212 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 9213 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 9214 } 9215 9216 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 9217 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 9218 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 9219 } 9220 9221 static struct pci_device_id ipr_pci_table[] __devinitdata = { 9222 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 9223 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 }, 9224 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 9225 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 }, 9226 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 9227 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 }, 9228 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 9229 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 }, 9230 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 9231 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 }, 9232 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 9233 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 }, 9234 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 9235 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 }, 9236 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 9237 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 9238 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9239 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 9240 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 9241 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 9242 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 9243 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9244 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 9245 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 9246 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9247 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 9248 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 9249 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 9250 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 9251 IPR_USE_LONG_TRANSOP_TIMEOUT}, 9252 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 9253 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 9254 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9255 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 9256 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 9257 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9258 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 9259 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 }, 9260 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 9261 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 }, 9262 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 9263 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 9264 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET }, 9265 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 9266 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 }, 9267 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 9268 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 }, 9269 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 9270 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 9271 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9272 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 9273 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 9274 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9275 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9276 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 }, 9277 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9278 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 }, 9279 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9280 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 }, 9281 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9282 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 }, 9283 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9284 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 }, 9285 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9286 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 }, 9287 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9288 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 }, 9289 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9290 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 }, 9291 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9292 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 }, 9293 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, 9294 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 }, 9295 { } 9296 }; 9297 MODULE_DEVICE_TABLE(pci, ipr_pci_table); 9298 9299 static const struct pci_error_handlers ipr_err_handler = { 9300 .error_detected = ipr_pci_error_detected, 9301 .slot_reset = ipr_pci_slot_reset, 9302 }; 9303 9304 static struct pci_driver ipr_driver = { 9305 .name = IPR_NAME, 9306 .id_table = ipr_pci_table, 9307 .probe = ipr_probe, 9308 .remove = __devexit_p(ipr_remove), 9309 .shutdown = ipr_shutdown, 9310 .err_handler = &ipr_err_handler, 9311 }; 9312 9313 /** 9314 * ipr_halt_done - Shutdown prepare completion 9315 * 9316 * Return value: 9317 * none 9318 **/ 9319 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd) 9320 { 9321 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9322 9323 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 9324 } 9325 9326 /** 9327 * ipr_halt - Issue shutdown prepare to all adapters 9328 * 9329 * Return value: 9330 * NOTIFY_OK on success / NOTIFY_DONE on failure 9331 **/ 9332 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf) 9333 { 9334 struct ipr_cmnd *ipr_cmd; 9335 struct ipr_ioa_cfg *ioa_cfg; 9336 unsigned long flags = 0; 9337 9338 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF) 9339 return NOTIFY_DONE; 9340 9341 spin_lock(&ipr_driver_lock); 9342 9343 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) { 9344 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9345 if (!ioa_cfg->allow_cmds) { 9346 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9347 continue; 9348 } 9349 9350 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 9351 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 9352 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 9353 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 9354 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 9355 9356 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 9357 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9358 } 9359 spin_unlock(&ipr_driver_lock); 9360 9361 return NOTIFY_OK; 9362 } 9363 9364 static struct notifier_block ipr_notifier = { 9365 ipr_halt, NULL, 0 9366 }; 9367 9368 /** 9369 * ipr_init - Module entry point 9370 * 9371 * Return value: 9372 * 0 on success / negative value on failure 9373 **/ 9374 static int __init ipr_init(void) 9375 { 9376 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 9377 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 9378 9379 register_reboot_notifier(&ipr_notifier); 9380 return pci_register_driver(&ipr_driver); 9381 } 9382 9383 /** 9384 * ipr_exit - Module unload 9385 * 9386 * Module unload entry point. 9387 * 9388 * Return value: 9389 * none 9390 **/ 9391 static void __exit ipr_exit(void) 9392 { 9393 unregister_reboot_notifier(&ipr_notifier); 9394 pci_unregister_driver(&ipr_driver); 9395 } 9396 9397 module_init(ipr_init); 9398 module_exit(ipr_exit); 9399