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[SCSI] scsi_debug: Update thin provisioning support
[mirror_ubuntu-bionic-kernel.git] / drivers / scsi / ipr.c
CommitLineData
1da177e4
LT		 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
1da177e4
LT		 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>
5a0e3ad6 62#include <linux/slab.h>
1da177e4
LT		 63#include <linux/ioport.h>
64#include <linux/delay.h>
65#include <linux/pci.h>
66#include <linux/wait.h>
67#include <linux/spinlock.h>
68#include <linux/sched.h>
69#include <linux/interrupt.h>
70#include <linux/blkdev.h>
71#include <linux/firmware.h>
72#include <linux/module.h>
73#include <linux/moduleparam.h>
35a39691 74#include <linux/libata.h>
0ce3a7e5 75#include <linux/hdreg.h>
f72919ec 76#include <linux/reboot.h>
3e7ebdfa 77#include <linux/stringify.h>
1da177e4
LT		 78#include <asm/io.h>
79#include <asm/irq.h>
80#include <asm/processor.h>
81#include <scsi/scsi.h>
82#include <scsi/scsi_host.h>
83#include <scsi/scsi_tcq.h>
84#include <scsi/scsi_eh.h>
85#include <scsi/scsi_cmnd.h>
1da177e4
LT		 86#include "ipr.h"
87
88/*
89 * Global Data
90 */
b7d68ca3 91static LIST_HEAD(ipr_ioa_head);
1da177e4
LT		 92static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
93static unsigned int ipr_max_speed = 1;
94static int ipr_testmode = 0;
95static unsigned int ipr_fastfail = 0;
5469cb5b 96static unsigned int ipr_transop_timeout = 0;
d3c74871 97static unsigned int ipr_debug = 0;
3e7ebdfa 98static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
ac09c349 99static unsigned int ipr_dual_ioa_raid = 1;
1da177e4
LT		 100static DEFINE_SPINLOCK(ipr_driver_lock);
101
102/* This table describes the differences between DMA controller chips */
103static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
60e7486b 104 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
1da177e4
LT		 105 .mailbox = 0x0042C,
106 .cache_line_size = 0x20,
107 {
108 .set_interrupt_mask_reg = 0x0022C,
109 .clr_interrupt_mask_reg = 0x00230,
214777ba 110 .clr_interrupt_mask_reg32 = 0x00230,
1da177e4 111 .sense_interrupt_mask_reg = 0x0022C,
214777ba 112 .sense_interrupt_mask_reg32 = 0x0022C,
1da177e4 113 .clr_interrupt_reg = 0x00228,
214777ba 114 .clr_interrupt_reg32 = 0x00228,
1da177e4 115 .sense_interrupt_reg = 0x00224,
214777ba 116 .sense_interrupt_reg32 = 0x00224,
1da177e4
LT		 117 .ioarrin_reg = 0x00404,
118 .sense_uproc_interrupt_reg = 0x00214,
214777ba 119 .sense_uproc_interrupt_reg32 = 0x00214,
1da177e4 120 .set_uproc_interrupt_reg = 0x00214,
214777ba
WB		 121 .set_uproc_interrupt_reg32 = 0x00214,
122 .clr_uproc_interrupt_reg = 0x00218,
123 .clr_uproc_interrupt_reg32 = 0x00218
1da177e4
LT		 124 }
125 },
126 { /* Snipe and Scamp */
127 .mailbox = 0x0052C,
128 .cache_line_size = 0x20,
129 {
130 .set_interrupt_mask_reg = 0x00288,
131 .clr_interrupt_mask_reg = 0x0028C,
214777ba 132 .clr_interrupt_mask_reg32 = 0x0028C,
1da177e4 133 .sense_interrupt_mask_reg = 0x00288,
214777ba 134 .sense_interrupt_mask_reg32 = 0x00288,
1da177e4 135 .clr_interrupt_reg = 0x00284,
214777ba 136 .clr_interrupt_reg32 = 0x00284,
1da177e4 137 .sense_interrupt_reg = 0x00280,
214777ba 138 .sense_interrupt_reg32 = 0x00280,
1da177e4
LT		 139 .ioarrin_reg = 0x00504,
140 .sense_uproc_interrupt_reg = 0x00290,
214777ba 141 .sense_uproc_interrupt_reg32 = 0x00290,
1da177e4 142 .set_uproc_interrupt_reg = 0x00290,
214777ba
WB		 143 .set_uproc_interrupt_reg32 = 0x00290,
144 .clr_uproc_interrupt_reg = 0x00294,
145 .clr_uproc_interrupt_reg32 = 0x00294
1da177e4
LT		 146 }
147 },
a74c1639
WB		 148 { /* CRoC */
149 .mailbox = 0x00040,
150 .cache_line_size = 0x20,
151 {
152 .set_interrupt_mask_reg = 0x00010,
153 .clr_interrupt_mask_reg = 0x00018,
214777ba 154 .clr_interrupt_mask_reg32 = 0x0001C,
a74c1639 155 .sense_interrupt_mask_reg = 0x00010,
214777ba 156 .sense_interrupt_mask_reg32 = 0x00014,
a74c1639 157 .clr_interrupt_reg = 0x00008,
214777ba 158 .clr_interrupt_reg32 = 0x0000C,
a74c1639 159 .sense_interrupt_reg = 0x00000,
214777ba 160 .sense_interrupt_reg32 = 0x00004,
a74c1639
WB		 161 .ioarrin_reg = 0x00070,
162 .sense_uproc_interrupt_reg = 0x00020,
214777ba 163 .sense_uproc_interrupt_reg32 = 0x00024,
a74c1639 164 .set_uproc_interrupt_reg = 0x00020,
214777ba 165 .set_uproc_interrupt_reg32 = 0x00024,
dcbad00e 166 .clr_uproc_interrupt_reg = 0x00028,
214777ba
WB		 167 .clr_uproc_interrupt_reg32 = 0x0002C,
168 .init_feedback_reg = 0x0005C,
dcbad00e 169 .dump_addr_reg = 0x00064,
8701f185
WB		 170 .dump_data_reg = 0x00068,
171 .endian_swap_reg = 0x00084
a74c1639
WB		 172 }
173 },
1da177e4
LT		 174};
175
176static const struct ipr_chip_t ipr_chip[] = {
cb237ef7
WB		 177 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
178 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
179 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
180 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
181 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
182 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
183 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
184 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
185 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
1da177e4
LT		 186};
187
188static int ipr_max_bus_speeds [] = {
189 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
190};
191
192MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
193MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
194module_param_named(max_speed, ipr_max_speed, uint, 0);
195MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
196module_param_named(log_level, ipr_log_level, uint, 0);
197MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
198module_param_named(testmode, ipr_testmode, int, 0);
199MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
2cf22be0 200module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
1da177e4
LT		 201MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
202module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
203MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
2cf22be0 204module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
d3c74871 205MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
ac09c349
BK		 206module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
207MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
3e7ebdfa
WB		 208module_param_named(max_devs, ipr_max_devs, int, 0);
209MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
210 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
1da177e4
LT		 211MODULE_LICENSE("GPL");
212MODULE_VERSION(IPR_DRIVER_VERSION);
213
1da177e4
LT		 214/* A constant array of IOASCs/URCs/Error Messages */
215static const
216struct ipr_error_table_t ipr_error_table[] = {
933916f3 217 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 218 "8155: An unknown error was received"},
219 {0x00330000, 0, 0,
220 "Soft underlength error"},
221 {0x005A0000, 0, 0,
222 "Command to be cancelled not found"},
223 {0x00808000, 0, 0,
224 "Qualified success"},
933916f3 225 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 226 "FFFE: Soft device bus error recovered by the IOA"},
933916f3 227 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 228 "4101: Soft device bus fabric error"},
5aa3a333
WB		 229 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
230 "FFFC: Logical block guard error recovered by the device"},
231 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
232 "FFFC: Logical block reference tag error recovered by the device"},
233 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
234 "4171: Recovered scatter list tag / sequence number error"},
235 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
236 "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
237 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
238 "4171: Recovered logical block sequence number error on IOA to Host transfer"},
239 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
240 "FFFD: Recovered logical block reference tag error detected by the IOA"},
241 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
242 "FFFD: Logical block guard error recovered by the IOA"},
933916f3 243 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 244 "FFF9: Device sector reassign successful"},
933916f3 245 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 246 "FFF7: Media error recovered by device rewrite procedures"},
933916f3 247 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 248 "7001: IOA sector reassignment successful"},
933916f3 249 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 250 "FFF9: Soft media error. Sector reassignment recommended"},
933916f3 251 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 252 "FFF7: Media error recovered by IOA rewrite procedures"},
933916f3 253 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 254 "FF3D: Soft PCI bus error recovered by the IOA"},
933916f3 255 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 256 "FFF6: Device hardware error recovered by the IOA"},
933916f3 257 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 258 "FFF6: Device hardware error recovered by the device"},
933916f3 259 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 260 "FF3D: Soft IOA error recovered by the IOA"},
933916f3 261 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 262 "FFFA: Undefined device response recovered by the IOA"},
933916f3 263 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 264 "FFF6: Device bus error, message or command phase"},
933916f3 265 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
35a39691 266 "FFFE: Task Management Function failed"},
933916f3 267 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 268 "FFF6: Failure prediction threshold exceeded"},
933916f3 269 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 270 "8009: Impending cache battery pack failure"},
271 {0x02040400, 0, 0,
272 "34FF: Disk device format in progress"},
65f56475
BK		 273 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
274 "9070: IOA requested reset"},
1da177e4
LT		 275 {0x023F0000, 0, 0,
276 "Synchronization required"},
277 {0x024E0000, 0, 0,
278 "No ready, IOA shutdown"},
279 {0x025A0000, 0, 0,
280 "Not ready, IOA has been shutdown"},
933916f3 281 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 282 "3020: Storage subsystem configuration error"},
283 {0x03110B00, 0, 0,
284 "FFF5: Medium error, data unreadable, recommend reassign"},
285 {0x03110C00, 0, 0,
286 "7000: Medium error, data unreadable, do not reassign"},
933916f3 287 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 288 "FFF3: Disk media format bad"},
933916f3 289 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 290 "3002: Addressed device failed to respond to selection"},
933916f3 291 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 292 "3100: Device bus error"},
933916f3 293 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 294 "3109: IOA timed out a device command"},
295 {0x04088000, 0, 0,
296 "3120: SCSI bus is not operational"},
933916f3 297 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 298 "4100: Hard device bus fabric error"},
5aa3a333
WB		 299 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
300 "310C: Logical block guard error detected by the device"},
301 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
302 "310C: Logical block reference tag error detected by the device"},
303 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
304 "4170: Scatter list tag / sequence number error"},
305 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
306 "8150: Logical block CRC error on IOA to Host transfer"},
307 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
308 "4170: Logical block sequence number error on IOA to Host transfer"},
309 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
310 "310D: Logical block reference tag error detected by the IOA"},
311 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
312 "310D: Logical block guard error detected by the IOA"},
933916f3 313 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 314 "9000: IOA reserved area data check"},
933916f3 315 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 316 "9001: IOA reserved area invalid data pattern"},
933916f3 317 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 318 "9002: IOA reserved area LRC error"},
5aa3a333
WB		 319 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
320 "Hardware Error, IOA metadata access error"},
933916f3 321 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 322 "102E: Out of alternate sectors for disk storage"},
933916f3 323 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 324 "FFF4: Data transfer underlength error"},
933916f3 325 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 326 "FFF4: Data transfer overlength error"},
933916f3 327 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 328 "3400: Logical unit failure"},
933916f3 329 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 330 "FFF4: Device microcode is corrupt"},
933916f3 331 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 332 "8150: PCI bus error"},
333 {0x04430000, 1, 0,
334 "Unsupported device bus message received"},
933916f3 335 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 336 "FFF4: Disk device problem"},
933916f3 337 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 338 "8150: Permanent IOA failure"},
933916f3 339 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 340 "3010: Disk device returned wrong response to IOA"},
933916f3 341 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 342 "8151: IOA microcode error"},
343 {0x04448500, 0, 0,
344 "Device bus status error"},
933916f3 345 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 346 "8157: IOA error requiring IOA reset to recover"},
35a39691
BK		 347 {0x04448700, 0, 0,
348 "ATA device status error"},
1da177e4
LT		 349 {0x04490000, 0, 0,
350 "Message reject received from the device"},
933916f3 351 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 352 "8008: A permanent cache battery pack failure occurred"},
933916f3 353 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 354 "9090: Disk unit has been modified after the last known status"},
933916f3 355 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 356 "9081: IOA detected device error"},
933916f3 357 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 358 "9082: IOA detected device error"},
933916f3 359 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 360 "3110: Device bus error, message or command phase"},
933916f3 361 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
35a39691 362 "3110: SAS Command / Task Management Function failed"},
933916f3 363 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 364 "9091: Incorrect hardware configuration change has been detected"},
933916f3 365 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 366 "9073: Invalid multi-adapter configuration"},
933916f3 367 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 368 "4010: Incorrect connection between cascaded expanders"},
933916f3 369 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 370 "4020: Connections exceed IOA design limits"},
933916f3 371 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 372 "4030: Incorrect multipath connection"},
933916f3 373 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 374 "4110: Unsupported enclosure function"},
933916f3 375 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 376 "FFF4: Command to logical unit failed"},
377 {0x05240000, 1, 0,
378 "Illegal request, invalid request type or request packet"},
379 {0x05250000, 0, 0,
380 "Illegal request, invalid resource handle"},
b0df54bb
BK		 381 {0x05258000, 0, 0,
382 "Illegal request, commands not allowed to this device"},
383 {0x05258100, 0, 0,
384 "Illegal request, command not allowed to a secondary adapter"},
5aa3a333
WB		 385 {0x05258200, 0, 0,
386 "Illegal request, command not allowed to a non-optimized resource"},
1da177e4
LT		 387 {0x05260000, 0, 0,
388 "Illegal request, invalid field in parameter list"},
389 {0x05260100, 0, 0,
390 "Illegal request, parameter not supported"},
391 {0x05260200, 0, 0,
392 "Illegal request, parameter value invalid"},
393 {0x052C0000, 0, 0,
394 "Illegal request, command sequence error"},
b0df54bb
BK		 395 {0x052C8000, 1, 0,
396 "Illegal request, dual adapter support not enabled"},
933916f3 397 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 398 "9031: Array protection temporarily suspended, protection resuming"},
933916f3 399 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 400 "9040: Array protection temporarily suspended, protection resuming"},
933916f3 401 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 402 "3140: Device bus not ready to ready transition"},
933916f3 403 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 404 "FFFB: SCSI bus was reset"},
405 {0x06290500, 0, 0,
406 "FFFE: SCSI bus transition to single ended"},
407 {0x06290600, 0, 0,
408 "FFFE: SCSI bus transition to LVD"},
933916f3 409 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 410 "FFFB: SCSI bus was reset by another initiator"},
933916f3 411 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 412 "3029: A device replacement has occurred"},
933916f3 413 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 414 "9051: IOA cache data exists for a missing or failed device"},
933916f3 415 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 416 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
933916f3 417 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 418 "9025: Disk unit is not supported at its physical location"},
933916f3 419 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 420 "3020: IOA detected a SCSI bus configuration error"},
933916f3 421 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 422 "3150: SCSI bus configuration error"},
933916f3 423 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 424 "9074: Asymmetric advanced function disk configuration"},
933916f3 425 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 426 "4040: Incomplete multipath connection between IOA and enclosure"},
933916f3 427 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 428 "4041: Incomplete multipath connection between enclosure and device"},
933916f3 429 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 430 "9075: Incomplete multipath connection between IOA and remote IOA"},
933916f3 431 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 432 "9076: Configuration error, missing remote IOA"},
933916f3 433 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 434 "4050: Enclosure does not support a required multipath function"},
b75424fc
WB		 435 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
436 "4070: Logically bad block written on device"},
933916f3 437 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 438 "9041: Array protection temporarily suspended"},
933916f3 439 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 440 "9042: Corrupt array parity detected on specified device"},
933916f3 441 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 442 "9030: Array no longer protected due to missing or failed disk unit"},
933916f3 443 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 444 "9071: Link operational transition"},
933916f3 445 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 446 "9072: Link not operational transition"},
933916f3 447 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 448 "9032: Array exposed but still protected"},
e435340c
BK		 449 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
450 "70DD: Device forced failed by disrupt device command"},
933916f3 451 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 452 "4061: Multipath redundancy level got better"},
933916f3 453 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 454 "4060: Multipath redundancy level got worse"},
1da177e4
LT		 455 {0x07270000, 0, 0,
456 "Failure due to other device"},
933916f3 457 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 458 "9008: IOA does not support functions expected by devices"},
933916f3 459 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 460 "9010: Cache data associated with attached devices cannot be found"},
933916f3 461 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 462 "9011: Cache data belongs to devices other than those attached"},
933916f3 463 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 464 "9020: Array missing 2 or more devices with only 1 device present"},
933916f3 465 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 466 "9021: Array missing 2 or more devices with 2 or more devices present"},
933916f3 467 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 468 "9022: Exposed array is missing a required device"},
933916f3 469 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 470 "9023: Array member(s) not at required physical locations"},
933916f3 471 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 472 "9024: Array not functional due to present hardware configuration"},
933916f3 473 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 474 "9026: Array not functional due to present hardware configuration"},
933916f3 475 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 476 "9027: Array is missing a device and parity is out of sync"},
933916f3 477 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 478 "9028: Maximum number of arrays already exist"},
933916f3 479 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 480 "9050: Required cache data cannot be located for a disk unit"},
933916f3 481 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 482 "9052: Cache data exists for a device that has been modified"},
933916f3 483 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 484 "9054: IOA resources not available due to previous problems"},
933916f3 485 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 486 "9092: Disk unit requires initialization before use"},
933916f3 487 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 488 "9029: Incorrect hardware configuration change has been detected"},
933916f3 489 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 490 "9060: One or more disk pairs are missing from an array"},
933916f3 491 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 492 "9061: One or more disks are missing from an array"},
933916f3 493 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 494 "9062: One or more disks are missing from an array"},
933916f3 495 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 496 "9063: Maximum number of functional arrays has been exceeded"},
497 {0x0B260000, 0, 0,
498 "Aborted command, invalid descriptor"},
499 {0x0B5A0000, 0, 0,
500 "Command terminated by host"}
501};
502
503static const struct ipr_ses_table_entry ipr_ses_table[] = {
504 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
505 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
506 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
507 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
508 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
509 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
510 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
511 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
512 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
513 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
514 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
515 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
516 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
517};
518
519/*
520 * Function Prototypes
521 */
522static int ipr_reset_alert(struct ipr_cmnd *);
523static void ipr_process_ccn(struct ipr_cmnd *);
524static void ipr_process_error(struct ipr_cmnd *);
525static void ipr_reset_ioa_job(struct ipr_cmnd *);
526static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
527 enum ipr_shutdown_type);
528
529#ifdef CONFIG_SCSI_IPR_TRACE
530/**
531 * ipr_trc_hook - Add a trace entry to the driver trace
532 * @ipr_cmd: ipr command struct
533 * @type: trace type
534 * @add_data: additional data
535 *
536 * Return value:
537 * none
538 **/
539static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
540 u8 type, u32 add_data)
541{
542 struct ipr_trace_entry *trace_entry;
543 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
544
545 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
546 trace_entry->time = jiffies;
547 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
548 trace_entry->type = type;
a32c055f
WB		 549 if (ipr_cmd->ioa_cfg->sis64)
550 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
551 else
552 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
35a39691 553 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
1da177e4
LT		 554 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
555 trace_entry->u.add_data = add_data;
556}
557#else
558#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
559#endif
560
561/**
562 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
563 * @ipr_cmd: ipr command struct
564 *
565 * Return value:
566 * none
567 **/
568static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
569{
570 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
96d21f00
WB		 571 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
572 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
a32c055f 573 dma_addr_t dma_addr = ipr_cmd->dma_addr;
1da177e4
LT		 574
575 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
a32c055f 576 ioarcb->data_transfer_length = 0;
1da177e4 577 ioarcb->read_data_transfer_length = 0;
a32c055f 578 ioarcb->ioadl_len = 0;
1da177e4 579 ioarcb->read_ioadl_len = 0;
a32c055f 580
96d21f00 581 if (ipr_cmd->ioa_cfg->sis64) {
a32c055f
WB		 582 ioarcb->u.sis64_addr_data.data_ioadl_addr =
583 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
96d21f00
WB		 584 ioasa64->u.gata.status = 0;
585 } else {
a32c055f
WB		 586 ioarcb->write_ioadl_addr =
587 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
588 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
96d21f00 589 ioasa->u.gata.status = 0;
a32c055f
WB		 590 }
591
96d21f00
WB		 592 ioasa->hdr.ioasc = 0;
593 ioasa->hdr.residual_data_len = 0;
1da177e4 594 ipr_cmd->scsi_cmd = NULL;
35a39691 595 ipr_cmd->qc = NULL;
1da177e4
LT		 596 ipr_cmd->sense_buffer[0] = 0;
597 ipr_cmd->dma_use_sg = 0;
598}
599
600/**
601 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
602 * @ipr_cmd: ipr command struct
603 *
604 * Return value:
605 * none
606 **/
607static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
608{
609 ipr_reinit_ipr_cmnd(ipr_cmd);
610 ipr_cmd->u.scratch = 0;
611 ipr_cmd->sibling = NULL;
612 init_timer(&ipr_cmd->timer);
613}
614
615/**
616 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
617 * @ioa_cfg: ioa config struct
618 *
619 * Return value:
620 * pointer to ipr command struct
621 **/
622static
623struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
624{
625 struct ipr_cmnd *ipr_cmd;
626
627 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
628 list_del(&ipr_cmd->queue);
629 ipr_init_ipr_cmnd(ipr_cmd);
630
631 return ipr_cmd;
632}
633
1da177e4
LT		 634/**
635 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
636 * @ioa_cfg: ioa config struct
637 * @clr_ints: interrupts to clear
638 *
639 * This function masks all interrupts on the adapter, then clears the
640 * interrupts specified in the mask
641 *
642 * Return value:
643 * none
644 **/
645static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
646 u32 clr_ints)
647{
648 volatile u32 int_reg;
649
650 /* Stop new interrupts */
651 ioa_cfg->allow_interrupts = 0;
652
653 /* Set interrupt mask to stop all new interrupts */
214777ba
WB		 654 if (ioa_cfg->sis64)
655 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
656 else
657 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
1da177e4
LT		 658
659 /* Clear any pending interrupts */
214777ba
WB		 660 if (ioa_cfg->sis64)
661 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
662 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
1da177e4
LT		 663 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
664}
665
666/**
667 * ipr_save_pcix_cmd_reg - Save PCI-X command register
668 * @ioa_cfg: ioa config struct
669 *
670 * Return value:
671 * 0 on success / -EIO on failure
672 **/
673static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
674{
675 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
676
7dce0e1c
BK		 677 if (pcix_cmd_reg == 0)
678 return 0;
1da177e4
LT		 679
680 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
681 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
682 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
683 return -EIO;
684 }
685
686 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
687 return 0;
688}
689
690/**
691 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
692 * @ioa_cfg: ioa config struct
693 *
694 * Return value:
695 * 0 on success / -EIO on failure
696 **/
697static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
698{
699 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
700
701 if (pcix_cmd_reg) {
702 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
703 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
704 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
705 return -EIO;
706 }
1da177e4
LT		 707 }
708
709 return 0;
710}
711
35a39691
BK		 712/**
713 * ipr_sata_eh_done - done function for aborted SATA commands
714 * @ipr_cmd: ipr command struct
715 *
716 * This function is invoked for ops generated to SATA
717 * devices which are being aborted.
718 *
719 * Return value:
720 * none
721 **/
722static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
723{
724 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
725 struct ata_queued_cmd *qc = ipr_cmd->qc;
726 struct ipr_sata_port *sata_port = qc->ap->private_data;
727
728 qc->err_mask |= AC_ERR_OTHER;
729 sata_port->ioasa.status |= ATA_BUSY;
730 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
731 ata_qc_complete(qc);
732}
733
1da177e4
LT		 734/**
735 * ipr_scsi_eh_done - mid-layer done function for aborted ops
736 * @ipr_cmd: ipr command struct
737 *
738 * This function is invoked by the interrupt handler for
739 * ops generated by the SCSI mid-layer which are being aborted.
740 *
741 * Return value:
742 * none
743 **/
744static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
745{
746 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
747 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
748
749 scsi_cmd->result |= (DID_ERROR << 16);
750
63015bc9 751 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 752 scsi_cmd->scsi_done(scsi_cmd);
753 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
754}
755
756/**
757 * ipr_fail_all_ops - Fails all outstanding ops.
758 * @ioa_cfg: ioa config struct
759 *
760 * This function fails all outstanding ops.
761 *
762 * Return value:
763 * none
764 **/
765static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
766{
767 struct ipr_cmnd *ipr_cmd, *temp;
768
769 ENTER;
770 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
771 list_del(&ipr_cmd->queue);
772
96d21f00
WB		 773 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
774 ipr_cmd->s.ioasa.hdr.ilid = cpu_to_be32(IPR_DRIVER_ILID);
1da177e4
LT		 775
776 if (ipr_cmd->scsi_cmd)
777 ipr_cmd->done = ipr_scsi_eh_done;
35a39691
BK		 778 else if (ipr_cmd->qc)
779 ipr_cmd->done = ipr_sata_eh_done;
1da177e4
LT		 780
781 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
782 del_timer(&ipr_cmd->timer);
783 ipr_cmd->done(ipr_cmd);
784 }
785
786 LEAVE;
787}
788
a32c055f
WB		 789/**
790 * ipr_send_command - Send driver initiated requests.
791 * @ipr_cmd: ipr command struct
792 *
793 * This function sends a command to the adapter using the correct write call.
794 * In the case of sis64, calculate the ioarcb size required. Then or in the
795 * appropriate bits.
796 *
797 * Return value:
798 * none
799 **/
800static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
801{
802 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
803 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
804
805 if (ioa_cfg->sis64) {
806 /* The default size is 256 bytes */
807 send_dma_addr |= 0x1;
808
809 /* If the number of ioadls * size of ioadl > 128 bytes,
810 then use a 512 byte ioarcb */
811 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
812 send_dma_addr |= 0x4;
813 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
814 } else
815 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
816}
817
1da177e4
LT		 818/**
819 * ipr_do_req - Send driver initiated requests.
820 * @ipr_cmd: ipr command struct
821 * @done: done function
822 * @timeout_func: timeout function
823 * @timeout: timeout value
824 *
825 * This function sends the specified command to the adapter with the
826 * timeout given. The done function is invoked on command completion.
827 *
828 * Return value:
829 * none
830 **/
831static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
832 void (*done) (struct ipr_cmnd *),
833 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
834{
835 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
836
837 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
838
839 ipr_cmd->done = done;
840
841 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
842 ipr_cmd->timer.expires = jiffies + timeout;
843 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
844
845 add_timer(&ipr_cmd->timer);
846
847 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
848
849 mb();
a32c055f
WB		 850
851 ipr_send_command(ipr_cmd);
1da177e4
LT		 852}
853
854/**
855 * ipr_internal_cmd_done - Op done function for an internally generated op.
856 * @ipr_cmd: ipr command struct
857 *
858 * This function is the op done function for an internally generated,
859 * blocking op. It simply wakes the sleeping thread.
860 *
861 * Return value:
862 * none
863 **/
864static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
865{
866 if (ipr_cmd->sibling)
867 ipr_cmd->sibling = NULL;
868 else
869 complete(&ipr_cmd->completion);
870}
871
a32c055f
WB		 872/**
873 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
874 * @ipr_cmd: ipr command struct
875 * @dma_addr: dma address
876 * @len: transfer length
877 * @flags: ioadl flag value
878 *
879 * This function initializes an ioadl in the case where there is only a single
880 * descriptor.
881 *
882 * Return value:
883 * nothing
884 **/
885static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
886 u32 len, int flags)
887{
888 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
889 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
890
891 ipr_cmd->dma_use_sg = 1;
892
893 if (ipr_cmd->ioa_cfg->sis64) {
894 ioadl64->flags = cpu_to_be32(flags);
895 ioadl64->data_len = cpu_to_be32(len);
896 ioadl64->address = cpu_to_be64(dma_addr);
897
898 ipr_cmd->ioarcb.ioadl_len =
899 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
900 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
901 } else {
902 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
903 ioadl->address = cpu_to_be32(dma_addr);
904
905 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
906 ipr_cmd->ioarcb.read_ioadl_len =
907 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
908 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
909 } else {
910 ipr_cmd->ioarcb.ioadl_len =
911 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
912 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
913 }
914 }
915}
916
1da177e4
LT		 917/**
918 * ipr_send_blocking_cmd - Send command and sleep on its completion.
919 * @ipr_cmd: ipr command struct
920 * @timeout_func: function to invoke if command times out
921 * @timeout: timeout
922 *
923 * Return value:
924 * none
925 **/
926static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
927 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
928 u32 timeout)
929{
930 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
931
932 init_completion(&ipr_cmd->completion);
933 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
934
935 spin_unlock_irq(ioa_cfg->host->host_lock);
936 wait_for_completion(&ipr_cmd->completion);
937 spin_lock_irq(ioa_cfg->host->host_lock);
938}
939
940/**
941 * ipr_send_hcam - Send an HCAM to the adapter.
942 * @ioa_cfg: ioa config struct
943 * @type: HCAM type
944 * @hostrcb: hostrcb struct
945 *
946 * This function will send a Host Controlled Async command to the adapter.
947 * If HCAMs are currently not allowed to be issued to the adapter, it will
948 * place the hostrcb on the free queue.
949 *
950 * Return value:
951 * none
952 **/
953static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
954 struct ipr_hostrcb *hostrcb)
955{
956 struct ipr_cmnd *ipr_cmd;
957 struct ipr_ioarcb *ioarcb;
958
959 if (ioa_cfg->allow_cmds) {
960 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
961 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
962 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
963
964 ipr_cmd->u.hostrcb = hostrcb;
965 ioarcb = &ipr_cmd->ioarcb;
966
967 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
968 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
969 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
970 ioarcb->cmd_pkt.cdb[1] = type;
971 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
972 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
973
a32c055f
WB		 974 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
975 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
1da177e4
LT		 976
977 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
978 ipr_cmd->done = ipr_process_ccn;
979 else
980 ipr_cmd->done = ipr_process_error;
981
982 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
983
984 mb();
a32c055f
WB		 985
986 ipr_send_command(ipr_cmd);
1da177e4
LT		 987 } else {
988 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
989 }
990}
991
3e7ebdfa
WB		 992/**
993 * ipr_update_ata_class - Update the ata class in the resource entry
994 * @res: resource entry struct
995 * @proto: cfgte device bus protocol value
996 *
997 * Return value:
998 * none
999 **/
1000static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1001{
1002 switch(proto) {
1003 case IPR_PROTO_SATA:
1004 case IPR_PROTO_SAS_STP:
1005 res->ata_class = ATA_DEV_ATA;
1006 break;
1007 case IPR_PROTO_SATA_ATAPI:
1008 case IPR_PROTO_SAS_STP_ATAPI:
1009 res->ata_class = ATA_DEV_ATAPI;
1010 break;
1011 default:
1012 res->ata_class = ATA_DEV_UNKNOWN;
1013 break;
1014 };
1015}
1016
1da177e4
LT		 1017/**
1018 * ipr_init_res_entry - Initialize a resource entry struct.
1019 * @res: resource entry struct
3e7ebdfa 1020 * @cfgtew: config table entry wrapper struct
1da177e4
LT		 1021 *
1022 * Return value:
1023 * none
1024 **/
3e7ebdfa
WB		 1025static void ipr_init_res_entry(struct ipr_resource_entry *res,
1026 struct ipr_config_table_entry_wrapper *cfgtew)
1da177e4 1027{
3e7ebdfa
WB		 1028 int found = 0;
1029 unsigned int proto;
1030 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1031 struct ipr_resource_entry *gscsi_res = NULL;
1032
ee0a90fa 1033 res->needs_sync_complete = 0;
1da177e4
LT		 1034 res->in_erp = 0;
1035 res->add_to_ml = 0;
1036 res->del_from_ml = 0;
1037 res->resetting_device = 0;
1038 res->sdev = NULL;
35a39691 1039 res->sata_port = NULL;
3e7ebdfa
WB		 1040
1041 if (ioa_cfg->sis64) {
1042 proto = cfgtew->u.cfgte64->proto;
1043 res->res_flags = cfgtew->u.cfgte64->res_flags;
1044 res->qmodel = IPR_QUEUEING_MODEL64(res);
438b0331 1045 res->type = cfgtew->u.cfgte64->res_type;
3e7ebdfa
WB		 1046
1047 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1048 sizeof(res->res_path));
1049
1050 res->bus = 0;
1051 res->lun = scsilun_to_int(&res->dev_lun);
1052
1053 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1054 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1055 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1056 found = 1;
1057 res->target = gscsi_res->target;
1058 break;
1059 }
1060 }
1061 if (!found) {
1062 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1063 ioa_cfg->max_devs_supported);
1064 set_bit(res->target, ioa_cfg->target_ids);
1065 }
1066
1067 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1068 sizeof(res->dev_lun.scsi_lun));
1069 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1070 res->bus = IPR_IOAFP_VIRTUAL_BUS;
1071 res->target = 0;
1072 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1073 res->bus = IPR_ARRAY_VIRTUAL_BUS;
1074 res->target = find_first_zero_bit(ioa_cfg->array_ids,
1075 ioa_cfg->max_devs_supported);
1076 set_bit(res->target, ioa_cfg->array_ids);
1077 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1078 res->bus = IPR_VSET_VIRTUAL_BUS;
1079 res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1080 ioa_cfg->max_devs_supported);
1081 set_bit(res->target, ioa_cfg->vset_ids);
1082 } else {
1083 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1084 ioa_cfg->max_devs_supported);
1085 set_bit(res->target, ioa_cfg->target_ids);
1086 }
1087 } else {
1088 proto = cfgtew->u.cfgte->proto;
1089 res->qmodel = IPR_QUEUEING_MODEL(res);
1090 res->flags = cfgtew->u.cfgte->flags;
1091 if (res->flags & IPR_IS_IOA_RESOURCE)
1092 res->type = IPR_RES_TYPE_IOAFP;
1093 else
1094 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1095
1096 res->bus = cfgtew->u.cfgte->res_addr.bus;
1097 res->target = cfgtew->u.cfgte->res_addr.target;
1098 res->lun = cfgtew->u.cfgte->res_addr.lun;
46d74563 1099 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
3e7ebdfa
WB		 1100 }
1101
1102 ipr_update_ata_class(res, proto);
1103}
1104
1105/**
1106 * ipr_is_same_device - Determine if two devices are the same.
1107 * @res: resource entry struct
1108 * @cfgtew: config table entry wrapper struct
1109 *
1110 * Return value:
1111 * 1 if the devices are the same / 0 otherwise
1112 **/
1113static int ipr_is_same_device(struct ipr_resource_entry *res,
1114 struct ipr_config_table_entry_wrapper *cfgtew)
1115{
1116 if (res->ioa_cfg->sis64) {
1117 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1118 sizeof(cfgtew->u.cfgte64->dev_id)) &&
1119 !memcmp(&res->lun, &cfgtew->u.cfgte64->lun,
1120 sizeof(cfgtew->u.cfgte64->lun))) {
1121 return 1;
1122 }
1123 } else {
1124 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1125 res->target == cfgtew->u.cfgte->res_addr.target &&
1126 res->lun == cfgtew->u.cfgte->res_addr.lun)
1127 return 1;
1128 }
1129
1130 return 0;
1131}
1132
1133/**
5adcbeb3 1134 * ipr_format_res_path - Format the resource path for printing.
3e7ebdfa
WB		 1135 * @res_path: resource path
1136 * @buf: buffer
1137 *
1138 * Return value:
1139 * pointer to buffer
1140 **/
5adcbeb3 1141static char *ipr_format_res_path(u8 *res_path, char *buffer, int len)
3e7ebdfa
WB		 1142{
1143 int i;
5adcbeb3 1144 char *p = buffer;
3e7ebdfa 1145
46d74563 1146 *p = '\0';
5adcbeb3
WB		 1147 p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1148 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1149 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
3e7ebdfa
WB		 1150
1151 return buffer;
1152}
1153
1154/**
1155 * ipr_update_res_entry - Update the resource entry.
1156 * @res: resource entry struct
1157 * @cfgtew: config table entry wrapper struct
1158 *
1159 * Return value:
1160 * none
1161 **/
1162static void ipr_update_res_entry(struct ipr_resource_entry *res,
1163 struct ipr_config_table_entry_wrapper *cfgtew)
1164{
1165 char buffer[IPR_MAX_RES_PATH_LENGTH];
1166 unsigned int proto;
1167 int new_path = 0;
1168
1169 if (res->ioa_cfg->sis64) {
1170 res->flags = cfgtew->u.cfgte64->flags;
1171 res->res_flags = cfgtew->u.cfgte64->res_flags;
75576bb9 1172 res->type = cfgtew->u.cfgte64->res_type;
3e7ebdfa
WB		 1173
1174 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1175 sizeof(struct ipr_std_inq_data));
1176
1177 res->qmodel = IPR_QUEUEING_MODEL64(res);
1178 proto = cfgtew->u.cfgte64->proto;
1179 res->res_handle = cfgtew->u.cfgte64->res_handle;
1180 res->dev_id = cfgtew->u.cfgte64->dev_id;
1181
1182 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1183 sizeof(res->dev_lun.scsi_lun));
1184
1185 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1186 sizeof(res->res_path))) {
1187 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1188 sizeof(res->res_path));
1189 new_path = 1;
1190 }
1191
1192 if (res->sdev && new_path)
1193 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
5adcbeb3
WB		 1194 ipr_format_res_path(res->res_path, buffer,
1195 sizeof(buffer)));
3e7ebdfa
WB		 1196 } else {
1197 res->flags = cfgtew->u.cfgte->flags;
1198 if (res->flags & IPR_IS_IOA_RESOURCE)
1199 res->type = IPR_RES_TYPE_IOAFP;
1200 else
1201 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1202
1203 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1204 sizeof(struct ipr_std_inq_data));
1205
1206 res->qmodel = IPR_QUEUEING_MODEL(res);
1207 proto = cfgtew->u.cfgte->proto;
1208 res->res_handle = cfgtew->u.cfgte->res_handle;
1209 }
1210
1211 ipr_update_ata_class(res, proto);
1212}
1213
1214/**
1215 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1216 * for the resource.
1217 * @res: resource entry struct
1218 * @cfgtew: config table entry wrapper struct
1219 *
1220 * Return value:
1221 * none
1222 **/
1223static void ipr_clear_res_target(struct ipr_resource_entry *res)
1224{
1225 struct ipr_resource_entry *gscsi_res = NULL;
1226 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1227
1228 if (!ioa_cfg->sis64)
1229 return;
1230
1231 if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1232 clear_bit(res->target, ioa_cfg->array_ids);
1233 else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1234 clear_bit(res->target, ioa_cfg->vset_ids);
1235 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1236 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1237 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1238 return;
1239 clear_bit(res->target, ioa_cfg->target_ids);
1240
1241 } else if (res->bus == 0)
1242 clear_bit(res->target, ioa_cfg->target_ids);
1da177e4
LT		 1243}
1244
1245/**
1246 * ipr_handle_config_change - Handle a config change from the adapter
1247 * @ioa_cfg: ioa config struct
1248 * @hostrcb: hostrcb
1249 *
1250 * Return value:
1251 * none
1252 **/
1253static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
3e7ebdfa 1254 struct ipr_hostrcb *hostrcb)
1da177e4
LT		 1255{
1256 struct ipr_resource_entry *res = NULL;
3e7ebdfa
WB		 1257 struct ipr_config_table_entry_wrapper cfgtew;
1258 __be32 cc_res_handle;
1259
1da177e4
LT		 1260 u32 is_ndn = 1;
1261
3e7ebdfa
WB		 1262 if (ioa_cfg->sis64) {
1263 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1264 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1265 } else {
1266 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1267 cc_res_handle = cfgtew.u.cfgte->res_handle;
1268 }
1da177e4
LT		 1269
1270 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3e7ebdfa 1271 if (res->res_handle == cc_res_handle) {
1da177e4
LT		 1272 is_ndn = 0;
1273 break;
1274 }
1275 }
1276
1277 if (is_ndn) {
1278 if (list_empty(&ioa_cfg->free_res_q)) {
1279 ipr_send_hcam(ioa_cfg,
1280 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1281 hostrcb);
1282 return;
1283 }
1284
1285 res = list_entry(ioa_cfg->free_res_q.next,
1286 struct ipr_resource_entry, queue);
1287
1288 list_del(&res->queue);
3e7ebdfa 1289 ipr_init_res_entry(res, &cfgtew);
1da177e4
LT		 1290 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1291 }
1292
3e7ebdfa 1293 ipr_update_res_entry(res, &cfgtew);
1da177e4
LT		 1294
1295 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1296 if (res->sdev) {
1da177e4 1297 res->del_from_ml = 1;
3e7ebdfa 1298 res->res_handle = IPR_INVALID_RES_HANDLE;
1da177e4
LT		 1299 if (ioa_cfg->allow_ml_add_del)
1300 schedule_work(&ioa_cfg->work_q);
3e7ebdfa
WB		 1301 } else {
1302 ipr_clear_res_target(res);
1da177e4 1303 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3e7ebdfa 1304 }
1da177e4
LT		 1305 } else if (!res->sdev) {
1306 res->add_to_ml = 1;
1307 if (ioa_cfg->allow_ml_add_del)
1308 schedule_work(&ioa_cfg->work_q);
1309 }
1310
1311 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1312}
1313
1314/**
1315 * ipr_process_ccn - Op done function for a CCN.
1316 * @ipr_cmd: ipr command struct
1317 *
1318 * This function is the op done function for a configuration
1319 * change notification host controlled async from the adapter.
1320 *
1321 * Return value:
1322 * none
1323 **/
1324static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1325{
1326 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1327 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
96d21f00 1328 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1da177e4
LT		 1329
1330 list_del(&hostrcb->queue);
1331 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1332
1333 if (ioasc) {
1334 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
1335 dev_err(&ioa_cfg->pdev->dev,
1336 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1337
1338 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1339 } else {
1340 ipr_handle_config_change(ioa_cfg, hostrcb);
1341 }
1342}
1343
8cf093e2
BK		 1344/**
1345 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1346 * @i: index into buffer
1347 * @buf: string to modify
1348 *
1349 * This function will strip all trailing whitespace, pad the end
1350 * of the string with a single space, and NULL terminate the string.
1351 *
1352 * Return value:
1353 * new length of string
1354 **/
1355static int strip_and_pad_whitespace(int i, char *buf)
1356{
1357 while (i && buf[i] == ' ')
1358 i--;
1359 buf[i+1] = ' ';
1360 buf[i+2] = '\0';
1361 return i + 2;
1362}
1363
1364/**
1365 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1366 * @prefix: string to print at start of printk
1367 * @hostrcb: hostrcb pointer
1368 * @vpd: vendor/product id/sn struct
1369 *
1370 * Return value:
1371 * none
1372 **/
1373static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1374 struct ipr_vpd *vpd)
1375{
1376 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1377 int i = 0;
1378
1379 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1380 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1381
1382 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1383 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1384
1385 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1386 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1387
1388 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1389}
1390
1da177e4
LT		 1391/**
1392 * ipr_log_vpd - Log the passed VPD to the error log.
cfc32139 1393 * @vpd: vendor/product id/sn struct
1da177e4
LT		 1394 *
1395 * Return value:
1396 * none
1397 **/
cfc32139 1398static void ipr_log_vpd(struct ipr_vpd *vpd)
1da177e4
LT		 1399{
1400 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1401 + IPR_SERIAL_NUM_LEN];
1402
cfc32139
BK		 1403 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1404 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1da177e4
LT		 1405 IPR_PROD_ID_LEN);
1406 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1407 ipr_err("Vendor/Product ID: %s\n", buffer);
1408
cfc32139 1409 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1da177e4
LT		 1410 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1411 ipr_err(" Serial Number: %s\n", buffer);
1412}
1413
8cf093e2
BK		 1414/**
1415 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1416 * @prefix: string to print at start of printk
1417 * @hostrcb: hostrcb pointer
1418 * @vpd: vendor/product id/sn/wwn struct
1419 *
1420 * Return value:
1421 * none
1422 **/
1423static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1424 struct ipr_ext_vpd *vpd)
1425{
1426 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1427 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1428 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1429}
1430
ee0f05b8
BK		 1431/**
1432 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1433 * @vpd: vendor/product id/sn/wwn struct
1434 *
1435 * Return value:
1436 * none
1437 **/
1438static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1439{
1440 ipr_log_vpd(&vpd->vpd);
1441 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1442 be32_to_cpu(vpd->wwid[1]));
1443}
1444
1445/**
1446 * ipr_log_enhanced_cache_error - Log a cache error.
1447 * @ioa_cfg: ioa config struct
1448 * @hostrcb: hostrcb struct
1449 *
1450 * Return value:
1451 * none
1452 **/
1453static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1454 struct ipr_hostrcb *hostrcb)
1455{
4565e370
WB		 1456 struct ipr_hostrcb_type_12_error *error;
1457
1458 if (ioa_cfg->sis64)
1459 error = &hostrcb->hcam.u.error64.u.type_12_error;
1460 else
1461 error = &hostrcb->hcam.u.error.u.type_12_error;
ee0f05b8
BK		 1462
1463 ipr_err("-----Current Configuration-----\n");
1464 ipr_err("Cache Directory Card Information:\n");
1465 ipr_log_ext_vpd(&error->ioa_vpd);
1466 ipr_err("Adapter Card Information:\n");
1467 ipr_log_ext_vpd(&error->cfc_vpd);
1468
1469 ipr_err("-----Expected Configuration-----\n");
1470 ipr_err("Cache Directory Card Information:\n");
1471 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1472 ipr_err("Adapter Card Information:\n");
1473 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1474
1475 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1476 be32_to_cpu(error->ioa_data[0]),
1477 be32_to_cpu(error->ioa_data[1]),
1478 be32_to_cpu(error->ioa_data[2]));
1479}
1480
1da177e4
LT		 1481/**
1482 * ipr_log_cache_error - Log a cache error.
1483 * @ioa_cfg: ioa config struct
1484 * @hostrcb: hostrcb struct
1485 *
1486 * Return value:
1487 * none
1488 **/
1489static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1490 struct ipr_hostrcb *hostrcb)
1491{
1492 struct ipr_hostrcb_type_02_error *error =
1493 &hostrcb->hcam.u.error.u.type_02_error;
1494
1495 ipr_err("-----Current Configuration-----\n");
1496 ipr_err("Cache Directory Card Information:\n");
cfc32139 1497 ipr_log_vpd(&error->ioa_vpd);
1da177e4 1498 ipr_err("Adapter Card Information:\n");
cfc32139 1499 ipr_log_vpd(&error->cfc_vpd);
1da177e4
LT		 1500
1501 ipr_err("-----Expected Configuration-----\n");
1502 ipr_err("Cache Directory Card Information:\n");
cfc32139 1503 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1da177e4 1504 ipr_err("Adapter Card Information:\n");
cfc32139 1505 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1da177e4
LT		 1506
1507 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1508 be32_to_cpu(error->ioa_data[0]),
1509 be32_to_cpu(error->ioa_data[1]),
1510 be32_to_cpu(error->ioa_data[2]));
1511}
1512
ee0f05b8
BK		 1513/**
1514 * ipr_log_enhanced_config_error - Log a configuration error.
1515 * @ioa_cfg: ioa config struct
1516 * @hostrcb: hostrcb struct
1517 *
1518 * Return value:
1519 * none
1520 **/
1521static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1522 struct ipr_hostrcb *hostrcb)
1523{
1524 int errors_logged, i;
1525 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1526 struct ipr_hostrcb_type_13_error *error;
1527
1528 error = &hostrcb->hcam.u.error.u.type_13_error;
1529 errors_logged = be32_to_cpu(error->errors_logged);
1530
1531 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1532 be32_to_cpu(error->errors_detected), errors_logged);
1533
1534 dev_entry = error->dev;
1535
1536 for (i = 0; i < errors_logged; i++, dev_entry++) {
1537 ipr_err_separator;
1538
1539 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1540 ipr_log_ext_vpd(&dev_entry->vpd);
1541
1542 ipr_err("-----New Device Information-----\n");
1543 ipr_log_ext_vpd(&dev_entry->new_vpd);
1544
1545 ipr_err("Cache Directory Card Information:\n");
1546 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1547
1548 ipr_err("Adapter Card Information:\n");
1549 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1550 }
1551}
1552
4565e370
WB		 1553/**
1554 * ipr_log_sis64_config_error - Log a device error.
1555 * @ioa_cfg: ioa config struct
1556 * @hostrcb: hostrcb struct
1557 *
1558 * Return value:
1559 * none
1560 **/
1561static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1562 struct ipr_hostrcb *hostrcb)
1563{
1564 int errors_logged, i;
1565 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1566 struct ipr_hostrcb_type_23_error *error;
1567 char buffer[IPR_MAX_RES_PATH_LENGTH];
1568
1569 error = &hostrcb->hcam.u.error64.u.type_23_error;
1570 errors_logged = be32_to_cpu(error->errors_logged);
1571
1572 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1573 be32_to_cpu(error->errors_detected), errors_logged);
1574
1575 dev_entry = error->dev;
1576
1577 for (i = 0; i < errors_logged; i++, dev_entry++) {
1578 ipr_err_separator;
1579
1580 ipr_err("Device %d : %s", i + 1,
5adcbeb3
WB		 1581 ipr_format_res_path(dev_entry->res_path, buffer,
1582 sizeof(buffer)));
4565e370
WB		 1583 ipr_log_ext_vpd(&dev_entry->vpd);
1584
1585 ipr_err("-----New Device Information-----\n");
1586 ipr_log_ext_vpd(&dev_entry->new_vpd);
1587
1588 ipr_err("Cache Directory Card Information:\n");
1589 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1590
1591 ipr_err("Adapter Card Information:\n");
1592 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1593 }
1594}
1595
1da177e4
LT		 1596/**
1597 * ipr_log_config_error - Log a configuration error.
1598 * @ioa_cfg: ioa config struct
1599 * @hostrcb: hostrcb struct
1600 *
1601 * Return value:
1602 * none
1603 **/
1604static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1605 struct ipr_hostrcb *hostrcb)
1606{
1607 int errors_logged, i;
1608 struct ipr_hostrcb_device_data_entry *dev_entry;
1609 struct ipr_hostrcb_type_03_error *error;
1610
1611 error = &hostrcb->hcam.u.error.u.type_03_error;
1612 errors_logged = be32_to_cpu(error->errors_logged);
1613
1614 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1615 be32_to_cpu(error->errors_detected), errors_logged);
1616
cfc32139 1617 dev_entry = error->dev;
1da177e4
LT		 1618
1619 for (i = 0; i < errors_logged; i++, dev_entry++) {
1620 ipr_err_separator;
1621
fa15b1f6 1622 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
cfc32139 1623 ipr_log_vpd(&dev_entry->vpd);
1da177e4
LT		 1624
1625 ipr_err("-----New Device Information-----\n");
cfc32139 1626 ipr_log_vpd(&dev_entry->new_vpd);
1da177e4
LT		 1627
1628 ipr_err("Cache Directory Card Information:\n");
cfc32139 1629 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1da177e4
LT		 1630
1631 ipr_err("Adapter Card Information:\n");
cfc32139 1632 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1da177e4
LT		 1633
1634 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1635 be32_to_cpu(dev_entry->ioa_data[0]),
1636 be32_to_cpu(dev_entry->ioa_data[1]),
1637 be32_to_cpu(dev_entry->ioa_data[2]),
1638 be32_to_cpu(dev_entry->ioa_data[3]),
1639 be32_to_cpu(dev_entry->ioa_data[4]));
1640 }
1641}
1642
ee0f05b8
BK		 1643/**
1644 * ipr_log_enhanced_array_error - Log an array configuration error.
1645 * @ioa_cfg: ioa config struct
1646 * @hostrcb: hostrcb struct
1647 *
1648 * Return value:
1649 * none
1650 **/
1651static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1652 struct ipr_hostrcb *hostrcb)
1653{
1654 int i, num_entries;
1655 struct ipr_hostrcb_type_14_error *error;
1656 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1657 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1658
1659 error = &hostrcb->hcam.u.error.u.type_14_error;
1660
1661 ipr_err_separator;
1662
1663 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1664 error->protection_level,
1665 ioa_cfg->host->host_no,
1666 error->last_func_vset_res_addr.bus,
1667 error->last_func_vset_res_addr.target,
1668 error->last_func_vset_res_addr.lun);
1669
1670 ipr_err_separator;
1671
1672 array_entry = error->array_member;
1673 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1674 sizeof(error->array_member));
1675
1676 for (i = 0; i < num_entries; i++, array_entry++) {
1677 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1678 continue;
1679
1680 if (be32_to_cpu(error->exposed_mode_adn) == i)
1681 ipr_err("Exposed Array Member %d:\n", i);
1682 else
1683 ipr_err("Array Member %d:\n", i);
1684
1685 ipr_log_ext_vpd(&array_entry->vpd);
1686 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1687 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1688 "Expected Location");
1689
1690 ipr_err_separator;
1691 }
1692}
1693
1da177e4
LT		 1694/**
1695 * ipr_log_array_error - Log an array configuration error.
1696 * @ioa_cfg: ioa config struct
1697 * @hostrcb: hostrcb struct
1698 *
1699 * Return value:
1700 * none
1701 **/
1702static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1703 struct ipr_hostrcb *hostrcb)
1704{
1705 int i;
1706 struct ipr_hostrcb_type_04_error *error;
1707 struct ipr_hostrcb_array_data_entry *array_entry;
1708 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1709
1710 error = &hostrcb->hcam.u.error.u.type_04_error;
1711
1712 ipr_err_separator;
1713
1714 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1715 error->protection_level,
1716 ioa_cfg->host->host_no,
1717 error->last_func_vset_res_addr.bus,
1718 error->last_func_vset_res_addr.target,
1719 error->last_func_vset_res_addr.lun);
1720
1721 ipr_err_separator;
1722
1723 array_entry = error->array_member;
1724
1725 for (i = 0; i < 18; i++) {
cfc32139 1726 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1da177e4
LT		 1727 continue;
1728
fa15b1f6 1729 if (be32_to_cpu(error->exposed_mode_adn) == i)
1da177e4 1730 ipr_err("Exposed Array Member %d:\n", i);
fa15b1f6 1731 else
1da177e4 1732 ipr_err("Array Member %d:\n", i);
1da177e4 1733
cfc32139 1734 ipr_log_vpd(&array_entry->vpd);
1da177e4 1735
fa15b1f6
BK		 1736 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1737 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1738 "Expected Location");
1da177e4
LT		 1739
1740 ipr_err_separator;
1741
1742 if (i == 9)
1743 array_entry = error->array_member2;
1744 else
1745 array_entry++;
1746 }
1747}
1748
1749/**
b0df54bb 1750 * ipr_log_hex_data - Log additional hex IOA error data.
ac719aba 1751 * @ioa_cfg: ioa config struct
b0df54bb
BK		 1752 * @data: IOA error data
1753 * @len: data length
1da177e4
LT		 1754 *
1755 * Return value:
1756 * none
1757 **/
ac719aba 1758static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1da177e4
LT		 1759{
1760 int i;
1da177e4 1761
b0df54bb 1762 if (len == 0)
1da177e4
LT		 1763 return;
1764
ac719aba
BK		 1765 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1766 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1767
b0df54bb 1768 for (i = 0; i < len / 4; i += 4) {
1da177e4 1769 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
b0df54bb
BK		 1770 be32_to_cpu(data[i]),
1771 be32_to_cpu(data[i+1]),
1772 be32_to_cpu(data[i+2]),
1773 be32_to_cpu(data[i+3]));
1da177e4
LT		 1774 }
1775}
1776
ee0f05b8
BK		 1777/**
1778 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1779 * @ioa_cfg: ioa config struct
1780 * @hostrcb: hostrcb struct
1781 *
1782 * Return value:
1783 * none
1784 **/
1785static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1786 struct ipr_hostrcb *hostrcb)
1787{
1788 struct ipr_hostrcb_type_17_error *error;
1789
4565e370
WB		 1790 if (ioa_cfg->sis64)
1791 error = &hostrcb->hcam.u.error64.u.type_17_error;
1792 else
1793 error = &hostrcb->hcam.u.error.u.type_17_error;
1794
ee0f05b8 1795 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
ca54cb8c 1796 strim(error->failure_reason);
ee0f05b8 1797
8cf093e2
BK		 1798 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1799 be32_to_cpu(hostrcb->hcam.u.error.prc));
1800 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
ac719aba 1801 ipr_log_hex_data(ioa_cfg, error->data,
ee0f05b8
BK		 1802 be32_to_cpu(hostrcb->hcam.length) -
1803 (offsetof(struct ipr_hostrcb_error, u) +
1804 offsetof(struct ipr_hostrcb_type_17_error, data)));
1805}
1806
b0df54bb
BK		 1807/**
1808 * ipr_log_dual_ioa_error - Log a dual adapter error.
1809 * @ioa_cfg: ioa config struct
1810 * @hostrcb: hostrcb struct
1811 *
1812 * Return value:
1813 * none
1814 **/
1815static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1816 struct ipr_hostrcb *hostrcb)
1817{
1818 struct ipr_hostrcb_type_07_error *error;
1819
1820 error = &hostrcb->hcam.u.error.u.type_07_error;
1821 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
ca54cb8c 1822 strim(error->failure_reason);
b0df54bb 1823
8cf093e2
BK		 1824 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1825 be32_to_cpu(hostrcb->hcam.u.error.prc));
1826 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
ac719aba 1827 ipr_log_hex_data(ioa_cfg, error->data,
b0df54bb
BK		 1828 be32_to_cpu(hostrcb->hcam.length) -
1829 (offsetof(struct ipr_hostrcb_error, u) +
1830 offsetof(struct ipr_hostrcb_type_07_error, data)));
1831}
1832
49dc6a18
BK		 1833static const struct {
1834 u8 active;
1835 char *desc;
1836} path_active_desc[] = {
1837 { IPR_PATH_NO_INFO, "Path" },
1838 { IPR_PATH_ACTIVE, "Active path" },
1839 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1840};
1841
1842static const struct {
1843 u8 state;
1844 char *desc;
1845} path_state_desc[] = {
1846 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1847 { IPR_PATH_HEALTHY, "is healthy" },
1848 { IPR_PATH_DEGRADED, "is degraded" },
1849 { IPR_PATH_FAILED, "is failed" }
1850};
1851
1852/**
1853 * ipr_log_fabric_path - Log a fabric path error
1854 * @hostrcb: hostrcb struct
1855 * @fabric: fabric descriptor
1856 *
1857 * Return value:
1858 * none
1859 **/
1860static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1861 struct ipr_hostrcb_fabric_desc *fabric)
1862{
1863 int i, j;
1864 u8 path_state = fabric->path_state;
1865 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1866 u8 state = path_state & IPR_PATH_STATE_MASK;
1867
1868 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1869 if (path_active_desc[i].active != active)
1870 continue;
1871
1872 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1873 if (path_state_desc[j].state != state)
1874 continue;
1875
1876 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1877 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1878 path_active_desc[i].desc, path_state_desc[j].desc,
1879 fabric->ioa_port);
1880 } else if (fabric->cascaded_expander == 0xff) {
1881 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1882 path_active_desc[i].desc, path_state_desc[j].desc,
1883 fabric->ioa_port, fabric->phy);
1884 } else if (fabric->phy == 0xff) {
1885 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1886 path_active_desc[i].desc, path_state_desc[j].desc,
1887 fabric->ioa_port, fabric->cascaded_expander);
1888 } else {
1889 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1890 path_active_desc[i].desc, path_state_desc[j].desc,
1891 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1892 }
1893 return;
1894 }
1895 }
1896
1897 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1898 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1899}
1900
4565e370
WB		 1901/**
1902 * ipr_log64_fabric_path - Log a fabric path error
1903 * @hostrcb: hostrcb struct
1904 * @fabric: fabric descriptor
1905 *
1906 * Return value:
1907 * none
1908 **/
1909static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
1910 struct ipr_hostrcb64_fabric_desc *fabric)
1911{
1912 int i, j;
1913 u8 path_state = fabric->path_state;
1914 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1915 u8 state = path_state & IPR_PATH_STATE_MASK;
1916 char buffer[IPR_MAX_RES_PATH_LENGTH];
1917
1918 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1919 if (path_active_desc[i].active != active)
1920 continue;
1921
1922 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1923 if (path_state_desc[j].state != state)
1924 continue;
1925
1926 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
1927 path_active_desc[i].desc, path_state_desc[j].desc,
5adcbeb3
WB		 1928 ipr_format_res_path(fabric->res_path, buffer,
1929 sizeof(buffer)));
4565e370
WB		 1930 return;
1931 }
1932 }
1933
1934 ipr_err("Path state=%02X Resource Path=%s\n", path_state,
5adcbeb3 1935 ipr_format_res_path(fabric->res_path, buffer, sizeof(buffer)));
4565e370
WB		 1936}
1937
49dc6a18
BK		 1938static const struct {
1939 u8 type;
1940 char *desc;
1941} path_type_desc[] = {
1942 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1943 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1944 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1945 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1946};
1947
1948static const struct {
1949 u8 status;
1950 char *desc;
1951} path_status_desc[] = {
1952 { IPR_PATH_CFG_NO_PROB, "Functional" },
1953 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1954 { IPR_PATH_CFG_FAILED, "Failed" },
1955 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1956 { IPR_PATH_NOT_DETECTED, "Missing" },
1957 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1958};
1959
1960static const char *link_rate[] = {
1961 "unknown",
1962 "disabled",
1963 "phy reset problem",
1964 "spinup hold",
1965 "port selector",
1966 "unknown",
1967 "unknown",
1968 "unknown",
1969 "1.5Gbps",
1970 "3.0Gbps",
1971 "unknown",
1972 "unknown",
1973 "unknown",
1974 "unknown",
1975 "unknown",
1976 "unknown"
1977};
1978
1979/**
1980 * ipr_log_path_elem - Log a fabric path element.
1981 * @hostrcb: hostrcb struct
1982 * @cfg: fabric path element struct
1983 *
1984 * Return value:
1985 * none
1986 **/
1987static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1988 struct ipr_hostrcb_config_element *cfg)
1989{
1990 int i, j;
1991 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1992 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1993
1994 if (type == IPR_PATH_CFG_NOT_EXIST)
1995 return;
1996
1997 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1998 if (path_type_desc[i].type != type)
1999 continue;
2000
2001 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2002 if (path_status_desc[j].status != status)
2003 continue;
2004
2005 if (type == IPR_PATH_CFG_IOA_PORT) {
2006 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2007 path_status_desc[j].desc, path_type_desc[i].desc,
2008 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2009 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2010 } else {
2011 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2012 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2013 path_status_desc[j].desc, path_type_desc[i].desc,
2014 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2015 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2016 } else if (cfg->cascaded_expander == 0xff) {
2017 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2018 "WWN=%08X%08X\n", path_status_desc[j].desc,
2019 path_type_desc[i].desc, cfg->phy,
2020 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2021 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2022 } else if (cfg->phy == 0xff) {
2023 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2024 "WWN=%08X%08X\n", path_status_desc[j].desc,
2025 path_type_desc[i].desc, cfg->cascaded_expander,
2026 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2027 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2028 } else {
2029 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2030 "WWN=%08X%08X\n", path_status_desc[j].desc,
2031 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2032 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2033 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2034 }
2035 }
2036 return;
2037 }
2038 }
2039
2040 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2041 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2042 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2043 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2044}
2045
4565e370
WB		 2046/**
2047 * ipr_log64_path_elem - Log a fabric path element.
2048 * @hostrcb: hostrcb struct
2049 * @cfg: fabric path element struct
2050 *
2051 * Return value:
2052 * none
2053 **/
2054static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2055 struct ipr_hostrcb64_config_element *cfg)
2056{
2057 int i, j;
2058 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2059 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2060 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2061 char buffer[IPR_MAX_RES_PATH_LENGTH];
2062
2063 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2064 return;
2065
2066 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2067 if (path_type_desc[i].type != type)
2068 continue;
2069
2070 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2071 if (path_status_desc[j].status != status)
2072 continue;
2073
2074 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2075 path_status_desc[j].desc, path_type_desc[i].desc,
5adcbeb3
WB		 2076 ipr_format_res_path(cfg->res_path, buffer,
2077 sizeof(buffer)),
4565e370
WB		 2078 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2079 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2080 return;
2081 }
2082 }
2083 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2084 "WWN=%08X%08X\n", cfg->type_status,
5adcbeb3 2085 ipr_format_res_path(cfg->res_path, buffer, sizeof(buffer)),
4565e370
WB		 2086 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2087 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2088}
2089
49dc6a18
BK		 2090/**
2091 * ipr_log_fabric_error - Log a fabric error.
2092 * @ioa_cfg: ioa config struct
2093 * @hostrcb: hostrcb struct
2094 *
2095 * Return value:
2096 * none
2097 **/
2098static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2099 struct ipr_hostrcb *hostrcb)
2100{
2101 struct ipr_hostrcb_type_20_error *error;
2102 struct ipr_hostrcb_fabric_desc *fabric;
2103 struct ipr_hostrcb_config_element *cfg;
2104 int i, add_len;
2105
2106 error = &hostrcb->hcam.u.error.u.type_20_error;
2107 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2108 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2109
2110 add_len = be32_to_cpu(hostrcb->hcam.length) -
2111 (offsetof(struct ipr_hostrcb_error, u) +
2112 offsetof(struct ipr_hostrcb_type_20_error, desc));
2113
2114 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2115 ipr_log_fabric_path(hostrcb, fabric);
2116 for_each_fabric_cfg(fabric, cfg)
2117 ipr_log_path_elem(hostrcb, cfg);
2118
2119 add_len -= be16_to_cpu(fabric->length);
2120 fabric = (struct ipr_hostrcb_fabric_desc *)
2121 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2122 }
2123
ac719aba 2124 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
49dc6a18
BK		 2125}
2126
4565e370
WB		 2127/**
2128 * ipr_log_sis64_array_error - Log a sis64 array error.
2129 * @ioa_cfg: ioa config struct
2130 * @hostrcb: hostrcb struct
2131 *
2132 * Return value:
2133 * none
2134 **/
2135static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2136 struct ipr_hostrcb *hostrcb)
2137{
2138 int i, num_entries;
2139 struct ipr_hostrcb_type_24_error *error;
2140 struct ipr_hostrcb64_array_data_entry *array_entry;
2141 char buffer[IPR_MAX_RES_PATH_LENGTH];
2142 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2143
2144 error = &hostrcb->hcam.u.error64.u.type_24_error;
2145
2146 ipr_err_separator;
2147
2148 ipr_err("RAID %s Array Configuration: %s\n",
2149 error->protection_level,
5adcbeb3 2150 ipr_format_res_path(error->last_res_path, buffer, sizeof(buffer)));
4565e370
WB		 2151
2152 ipr_err_separator;
2153
2154 array_entry = error->array_member;
2155 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
2156 sizeof(error->array_member));
2157
2158 for (i = 0; i < num_entries; i++, array_entry++) {
2159
2160 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2161 continue;
2162
2163 if (error->exposed_mode_adn == i)
2164 ipr_err("Exposed Array Member %d:\n", i);
2165 else
2166 ipr_err("Array Member %d:\n", i);
2167
2168 ipr_err("Array Member %d:\n", i);
2169 ipr_log_ext_vpd(&array_entry->vpd);
2170 ipr_err("Current Location: %s",
5adcbeb3
WB		 2171 ipr_format_res_path(array_entry->res_path, buffer,
2172 sizeof(buffer)));
4565e370 2173 ipr_err("Expected Location: %s",
5adcbeb3
WB		 2174 ipr_format_res_path(array_entry->expected_res_path,
2175 buffer, sizeof(buffer)));
4565e370
WB		 2176
2177 ipr_err_separator;
2178 }
2179}
2180
2181/**
2182 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2183 * @ioa_cfg: ioa config struct
2184 * @hostrcb: hostrcb struct
2185 *
2186 * Return value:
2187 * none
2188 **/
2189static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2190 struct ipr_hostrcb *hostrcb)
2191{
2192 struct ipr_hostrcb_type_30_error *error;
2193 struct ipr_hostrcb64_fabric_desc *fabric;
2194 struct ipr_hostrcb64_config_element *cfg;
2195 int i, add_len;
2196
2197 error = &hostrcb->hcam.u.error64.u.type_30_error;
2198
2199 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2200 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2201
2202 add_len = be32_to_cpu(hostrcb->hcam.length) -
2203 (offsetof(struct ipr_hostrcb64_error, u) +
2204 offsetof(struct ipr_hostrcb_type_30_error, desc));
2205
2206 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2207 ipr_log64_fabric_path(hostrcb, fabric);
2208 for_each_fabric_cfg(fabric, cfg)
2209 ipr_log64_path_elem(hostrcb, cfg);
2210
2211 add_len -= be16_to_cpu(fabric->length);
2212 fabric = (struct ipr_hostrcb64_fabric_desc *)
2213 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2214 }
2215
2216 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2217}
2218
b0df54bb
BK		 2219/**
2220 * ipr_log_generic_error - Log an adapter error.
2221 * @ioa_cfg: ioa config struct
2222 * @hostrcb: hostrcb struct
2223 *
2224 * Return value:
2225 * none
2226 **/
2227static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2228 struct ipr_hostrcb *hostrcb)
2229{
ac719aba 2230 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
b0df54bb
BK		 2231 be32_to_cpu(hostrcb->hcam.length));
2232}
2233
1da177e4
LT		 2234/**
2235 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2236 * @ioasc: IOASC
2237 *
2238 * This function will return the index of into the ipr_error_table
2239 * for the specified IOASC. If the IOASC is not in the table,
2240 * 0 will be returned, which points to the entry used for unknown errors.
2241 *
2242 * Return value:
2243 * index into the ipr_error_table
2244 **/
2245static u32 ipr_get_error(u32 ioasc)
2246{
2247 int i;
2248
2249 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
35a39691 2250 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
1da177e4
LT		 2251 return i;
2252
2253 return 0;
2254}
2255
2256/**
2257 * ipr_handle_log_data - Log an adapter error.
2258 * @ioa_cfg: ioa config struct
2259 * @hostrcb: hostrcb struct
2260 *
2261 * This function logs an adapter error to the system.
2262 *
2263 * Return value:
2264 * none
2265 **/
2266static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2267 struct ipr_hostrcb *hostrcb)
2268{
2269 u32 ioasc;
2270 int error_index;
2271
2272 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2273 return;
2274
2275 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2276 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2277
4565e370
WB		 2278 if (ioa_cfg->sis64)
2279 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2280 else
2281 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
1da177e4 2282
4565e370
WB		 2283 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2284 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
1da177e4
LT		 2285 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2286 scsi_report_bus_reset(ioa_cfg->host,
4565e370 2287 hostrcb->hcam.u.error.fd_res_addr.bus);
1da177e4
LT		 2288 }
2289
2290 error_index = ipr_get_error(ioasc);
2291
2292 if (!ipr_error_table[error_index].log_hcam)
2293 return;
2294
49dc6a18 2295 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
1da177e4
LT		 2296
2297 /* Set indication we have logged an error */
2298 ioa_cfg->errors_logged++;
2299
933916f3 2300 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
1da177e4 2301 return;
cf852037
BK		 2302 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2303 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1da177e4
LT		 2304
2305 switch (hostrcb->hcam.overlay_id) {
1da177e4
LT		 2306 case IPR_HOST_RCB_OVERLAY_ID_2:
2307 ipr_log_cache_error(ioa_cfg, hostrcb);
2308 break;
2309 case IPR_HOST_RCB_OVERLAY_ID_3:
2310 ipr_log_config_error(ioa_cfg, hostrcb);
2311 break;
2312 case IPR_HOST_RCB_OVERLAY_ID_4:
2313 case IPR_HOST_RCB_OVERLAY_ID_6:
2314 ipr_log_array_error(ioa_cfg, hostrcb);
2315 break;
b0df54bb
BK		 2316 case IPR_HOST_RCB_OVERLAY_ID_7:
2317 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2318 break;
ee0f05b8
BK		 2319 case IPR_HOST_RCB_OVERLAY_ID_12:
2320 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2321 break;
2322 case IPR_HOST_RCB_OVERLAY_ID_13:
2323 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2324 break;
2325 case IPR_HOST_RCB_OVERLAY_ID_14:
2326 case IPR_HOST_RCB_OVERLAY_ID_16:
2327 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2328 break;
2329 case IPR_HOST_RCB_OVERLAY_ID_17:
2330 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2331 break;
49dc6a18
BK		 2332 case IPR_HOST_RCB_OVERLAY_ID_20:
2333 ipr_log_fabric_error(ioa_cfg, hostrcb);
2334 break;
4565e370
WB		 2335 case IPR_HOST_RCB_OVERLAY_ID_23:
2336 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2337 break;
2338 case IPR_HOST_RCB_OVERLAY_ID_24:
2339 case IPR_HOST_RCB_OVERLAY_ID_26:
2340 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2341 break;
2342 case IPR_HOST_RCB_OVERLAY_ID_30:
2343 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2344 break;
cf852037 2345 case IPR_HOST_RCB_OVERLAY_ID_1:
1da177e4 2346 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1da177e4 2347 default:
a9cfca96 2348 ipr_log_generic_error(ioa_cfg, hostrcb);
1da177e4
LT		 2349 break;
2350 }
2351}
2352
2353/**
2354 * ipr_process_error - Op done function for an adapter error log.
2355 * @ipr_cmd: ipr command struct
2356 *
2357 * This function is the op done function for an error log host
2358 * controlled async from the adapter. It will log the error and
2359 * send the HCAM back to the adapter.
2360 *
2361 * Return value:
2362 * none
2363 **/
2364static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2365{
2366 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2367 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
96d21f00 2368 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
4565e370
WB		 2369 u32 fd_ioasc;
2370
2371 if (ioa_cfg->sis64)
2372 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2373 else
2374 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
1da177e4
LT		 2375
2376 list_del(&hostrcb->queue);
2377 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2378
2379 if (!ioasc) {
2380 ipr_handle_log_data(ioa_cfg, hostrcb);
65f56475
BK		 2381 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2382 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
1da177e4
LT		 2383 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
2384 dev_err(&ioa_cfg->pdev->dev,
2385 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2386 }
2387
2388 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2389}
2390
2391/**
2392 * ipr_timeout - An internally generated op has timed out.
2393 * @ipr_cmd: ipr command struct
2394 *
2395 * This function blocks host requests and initiates an
2396 * adapter reset.
2397 *
2398 * Return value:
2399 * none
2400 **/
2401static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
2402{
2403 unsigned long lock_flags = 0;
2404 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2405
2406 ENTER;
2407 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2408
2409 ioa_cfg->errors_logged++;
2410 dev_err(&ioa_cfg->pdev->dev,
2411 "Adapter being reset due to command timeout.\n");
2412
2413 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2414 ioa_cfg->sdt_state = GET_DUMP;
2415
2416 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2417 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2418
2419 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2420 LEAVE;
2421}
2422
2423/**
2424 * ipr_oper_timeout - Adapter timed out transitioning to operational
2425 * @ipr_cmd: ipr command struct
2426 *
2427 * This function blocks host requests and initiates an
2428 * adapter reset.
2429 *
2430 * Return value:
2431 * none
2432 **/
2433static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2434{
2435 unsigned long lock_flags = 0;
2436 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2437
2438 ENTER;
2439 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2440
2441 ioa_cfg->errors_logged++;
2442 dev_err(&ioa_cfg->pdev->dev,
2443 "Adapter timed out transitioning to operational.\n");
2444
2445 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2446 ioa_cfg->sdt_state = GET_DUMP;
2447
2448 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2449 if (ipr_fastfail)
2450 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2451 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2452 }
2453
2454 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2455 LEAVE;
2456}
2457
2458/**
2459 * ipr_reset_reload - Reset/Reload the IOA
2460 * @ioa_cfg: ioa config struct
2461 * @shutdown_type: shutdown type
2462 *
2463 * This function resets the adapter and re-initializes it.
2464 * This function assumes that all new host commands have been stopped.
2465 * Return value:
2466 * SUCCESS / FAILED
2467 **/
2468static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
2469 enum ipr_shutdown_type shutdown_type)
2470{
2471 if (!ioa_cfg->in_reset_reload)
2472 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
2473
2474 spin_unlock_irq(ioa_cfg->host->host_lock);
2475 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2476 spin_lock_irq(ioa_cfg->host->host_lock);
2477
2478 /* If we got hit with a host reset while we were already resetting
2479 the adapter for some reason, and the reset failed. */
2480 if (ioa_cfg->ioa_is_dead) {
2481 ipr_trace;
2482 return FAILED;
2483 }
2484
2485 return SUCCESS;
2486}
2487
2488/**
2489 * ipr_find_ses_entry - Find matching SES in SES table
2490 * @res: resource entry struct of SES
2491 *
2492 * Return value:
2493 * pointer to SES table entry / NULL on failure
2494 **/
2495static const struct ipr_ses_table_entry *
2496ipr_find_ses_entry(struct ipr_resource_entry *res)
2497{
2498 int i, j, matches;
3e7ebdfa 2499 struct ipr_std_inq_vpids *vpids;
1da177e4
LT		 2500 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2501
2502 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2503 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2504 if (ste->compare_product_id_byte[j] == 'X') {
3e7ebdfa
WB		 2505 vpids = &res->std_inq_data.vpids;
2506 if (vpids->product_id[j] == ste->product_id[j])
1da177e4
LT		 2507 matches++;
2508 else
2509 break;
2510 } else
2511 matches++;
2512 }
2513
2514 if (matches == IPR_PROD_ID_LEN)
2515 return ste;
2516 }
2517
2518 return NULL;
2519}
2520
2521/**
2522 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2523 * @ioa_cfg: ioa config struct
2524 * @bus: SCSI bus
2525 * @bus_width: bus width
2526 *
2527 * Return value:
2528 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2529 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2530 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2531 * max 160MHz = max 320MB/sec).
2532 **/
2533static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2534{
2535 struct ipr_resource_entry *res;
2536 const struct ipr_ses_table_entry *ste;
2537 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2538
2539 /* Loop through each config table entry in the config table buffer */
2540 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3e7ebdfa 2541 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
1da177e4
LT		 2542 continue;
2543
3e7ebdfa 2544 if (bus != res->bus)
1da177e4
LT		 2545 continue;
2546
2547 if (!(ste = ipr_find_ses_entry(res)))
2548 continue;
2549
2550 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2551 }
2552
2553 return max_xfer_rate;
2554}
2555
2556/**
2557 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2558 * @ioa_cfg: ioa config struct
2559 * @max_delay: max delay in micro-seconds to wait
2560 *
2561 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2562 *
2563 * Return value:
2564 * 0 on success / other on failure
2565 **/
2566static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2567{
2568 volatile u32 pcii_reg;
2569 int delay = 1;
2570
2571 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2572 while (delay < max_delay) {
2573 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2574
2575 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2576 return 0;
2577
2578 /* udelay cannot be used if delay is more than a few milliseconds */
2579 if ((delay / 1000) > MAX_UDELAY_MS)
2580 mdelay(delay / 1000);
2581 else
2582 udelay(delay);
2583
2584 delay += delay;
2585 }
2586 return -EIO;
2587}
2588
dcbad00e
WB		 2589/**
2590 * ipr_get_sis64_dump_data_section - Dump IOA memory
2591 * @ioa_cfg: ioa config struct
2592 * @start_addr: adapter address to dump
2593 * @dest: destination kernel buffer
2594 * @length_in_words: length to dump in 4 byte words
2595 *
2596 * Return value:
2597 * 0 on success
2598 **/
2599static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2600 u32 start_addr,
2601 __be32 *dest, u32 length_in_words)
2602{
2603 int i;
2604
2605 for (i = 0; i < length_in_words; i++) {
2606 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2607 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2608 dest++;
2609 }
2610
2611 return 0;
2612}
2613
1da177e4
LT		 2614/**
2615 * ipr_get_ldump_data_section - Dump IOA memory
2616 * @ioa_cfg: ioa config struct
2617 * @start_addr: adapter address to dump
2618 * @dest: destination kernel buffer
2619 * @length_in_words: length to dump in 4 byte words
2620 *
2621 * Return value:
2622 * 0 on success / -EIO on failure
2623 **/
2624static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2625 u32 start_addr,
2626 __be32 *dest, u32 length_in_words)
2627{
2628 volatile u32 temp_pcii_reg;
2629 int i, delay = 0;
2630
dcbad00e
WB		 2631 if (ioa_cfg->sis64)
2632 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2633 dest, length_in_words);
2634
1da177e4
LT		 2635 /* Write IOA interrupt reg starting LDUMP state */
2636 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
214777ba 2637 ioa_cfg->regs.set_uproc_interrupt_reg32);
1da177e4
LT		 2638
2639 /* Wait for IO debug acknowledge */
2640 if (ipr_wait_iodbg_ack(ioa_cfg,
2641 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2642 dev_err(&ioa_cfg->pdev->dev,
2643 "IOA dump long data transfer timeout\n");
2644 return -EIO;
2645 }
2646
2647 /* Signal LDUMP interlocked - clear IO debug ack */
2648 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2649 ioa_cfg->regs.clr_interrupt_reg);
2650
2651 /* Write Mailbox with starting address */
2652 writel(start_addr, ioa_cfg->ioa_mailbox);
2653
2654 /* Signal address valid - clear IOA Reset alert */
2655 writel(IPR_UPROCI_RESET_ALERT,
214777ba 2656 ioa_cfg->regs.clr_uproc_interrupt_reg32);
1da177e4
LT		 2657
2658 for (i = 0; i < length_in_words; i++) {
2659 /* Wait for IO debug acknowledge */
2660 if (ipr_wait_iodbg_ack(ioa_cfg,
2661 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2662 dev_err(&ioa_cfg->pdev->dev,
2663 "IOA dump short data transfer timeout\n");
2664 return -EIO;
2665 }
2666
2667 /* Read data from mailbox and increment destination pointer */
2668 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2669 dest++;
2670
2671 /* For all but the last word of data, signal data received */
2672 if (i < (length_in_words - 1)) {
2673 /* Signal dump data received - Clear IO debug Ack */
2674 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2675 ioa_cfg->regs.clr_interrupt_reg);
2676 }
2677 }
2678
2679 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2680 writel(IPR_UPROCI_RESET_ALERT,
214777ba 2681 ioa_cfg->regs.set_uproc_interrupt_reg32);
1da177e4
LT		 2682
2683 writel(IPR_UPROCI_IO_DEBUG_ALERT,
214777ba 2684 ioa_cfg->regs.clr_uproc_interrupt_reg32);
1da177e4
LT		 2685
2686 /* Signal dump data received - Clear IO debug Ack */
2687 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2688 ioa_cfg->regs.clr_interrupt_reg);
2689
2690 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2691 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2692 temp_pcii_reg =
214777ba 2693 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
1da177e4
LT		 2694
2695 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2696 return 0;
2697
2698 udelay(10);
2699 delay += 10;
2700 }
2701
2702 return 0;
2703}
2704
2705#ifdef CONFIG_SCSI_IPR_DUMP
2706/**
2707 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2708 * @ioa_cfg: ioa config struct
2709 * @pci_address: adapter address
2710 * @length: length of data to copy
2711 *
2712 * Copy data from PCI adapter to kernel buffer.
2713 * Note: length MUST be a 4 byte multiple
2714 * Return value:
2715 * 0 on success / other on failure
2716 **/
2717static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2718 unsigned long pci_address, u32 length)
2719{
2720 int bytes_copied = 0;
2721 int cur_len, rc, rem_len, rem_page_len;
2722 __be32 *page;
2723 unsigned long lock_flags = 0;
2724 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2725
2726 while (bytes_copied < length &&
2727 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
2728 if (ioa_dump->page_offset >= PAGE_SIZE ||
2729 ioa_dump->page_offset == 0) {
2730 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2731
2732 if (!page) {
2733 ipr_trace;
2734 return bytes_copied;
2735 }
2736
2737 ioa_dump->page_offset = 0;
2738 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2739 ioa_dump->next_page_index++;
2740 } else
2741 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2742
2743 rem_len = length - bytes_copied;
2744 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2745 cur_len = min(rem_len, rem_page_len);
2746
2747 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2748 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2749 rc = -EIO;
2750 } else {
2751 rc = ipr_get_ldump_data_section(ioa_cfg,
2752 pci_address + bytes_copied,
2753 &page[ioa_dump->page_offset / 4],
2754 (cur_len / sizeof(u32)));
2755 }
2756 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2757
2758 if (!rc) {
2759 ioa_dump->page_offset += cur_len;
2760 bytes_copied += cur_len;
2761 } else {
2762 ipr_trace;
2763 break;
2764 }
2765 schedule();
2766 }
2767
2768 return bytes_copied;
2769}
2770
2771/**
2772 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2773 * @hdr: dump entry header struct
2774 *
2775 * Return value:
2776 * nothing
2777 **/
2778static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2779{
2780 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2781 hdr->num_elems = 1;
2782 hdr->offset = sizeof(*hdr);
2783 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2784}
2785
2786/**
2787 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2788 * @ioa_cfg: ioa config struct
2789 * @driver_dump: driver dump struct
2790 *
2791 * Return value:
2792 * nothing
2793 **/
2794static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2795 struct ipr_driver_dump *driver_dump)
2796{
2797 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2798
2799 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2800 driver_dump->ioa_type_entry.hdr.len =
2801 sizeof(struct ipr_dump_ioa_type_entry) -
2802 sizeof(struct ipr_dump_entry_header);
2803 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2804 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2805 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2806 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2807 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2808 ucode_vpd->minor_release[1];
2809 driver_dump->hdr.num_entries++;
2810}
2811
2812/**
2813 * ipr_dump_version_data - Fill in the driver version in the dump.
2814 * @ioa_cfg: ioa config struct
2815 * @driver_dump: driver dump struct
2816 *
2817 * Return value:
2818 * nothing
2819 **/
2820static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2821 struct ipr_driver_dump *driver_dump)
2822{
2823 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2824 driver_dump->version_entry.hdr.len =
2825 sizeof(struct ipr_dump_version_entry) -
2826 sizeof(struct ipr_dump_entry_header);
2827 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2828 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2829 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2830 driver_dump->hdr.num_entries++;
2831}
2832
2833/**
2834 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2835 * @ioa_cfg: ioa config struct
2836 * @driver_dump: driver dump struct
2837 *
2838 * Return value:
2839 * nothing
2840 **/
2841static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2842 struct ipr_driver_dump *driver_dump)
2843{
2844 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2845 driver_dump->trace_entry.hdr.len =
2846 sizeof(struct ipr_dump_trace_entry) -
2847 sizeof(struct ipr_dump_entry_header);
2848 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2849 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2850 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2851 driver_dump->hdr.num_entries++;
2852}
2853
2854/**
2855 * ipr_dump_location_data - Fill in the IOA location in the dump.
2856 * @ioa_cfg: ioa config struct
2857 * @driver_dump: driver dump struct
2858 *
2859 * Return value:
2860 * nothing
2861 **/
2862static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2863 struct ipr_driver_dump *driver_dump)
2864{
2865 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2866 driver_dump->location_entry.hdr.len =
2867 sizeof(struct ipr_dump_location_entry) -
2868 sizeof(struct ipr_dump_entry_header);
2869 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2870 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
71610f55 2871 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
1da177e4
LT		 2872 driver_dump->hdr.num_entries++;
2873}
2874
2875/**
2876 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2877 * @ioa_cfg: ioa config struct
2878 * @dump: dump struct
2879 *
2880 * Return value:
2881 * nothing
2882 **/
2883static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2884{
2885 unsigned long start_addr, sdt_word;
2886 unsigned long lock_flags = 0;
2887 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2888 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2889 u32 num_entries, start_off, end_off;
2890 u32 bytes_to_copy, bytes_copied, rc;
2891 struct ipr_sdt *sdt;
dcbad00e 2892 int valid = 1;
1da177e4
LT		 2893 int i;
2894
2895 ENTER;
2896
2897 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2898
2899 if (ioa_cfg->sdt_state != GET_DUMP) {
2900 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2901 return;
2902 }
2903
2904 start_addr = readl(ioa_cfg->ioa_mailbox);
2905
dcbad00e 2906 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
1da177e4
LT		 2907 dev_err(&ioa_cfg->pdev->dev,
2908 "Invalid dump table format: %lx\n", start_addr);
2909 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2910 return;
2911 }
2912
2913 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2914
2915 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2916
2917 /* Initialize the overall dump header */
2918 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2919 driver_dump->hdr.num_entries = 1;
2920 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2921 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2922 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2923 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2924
2925 ipr_dump_version_data(ioa_cfg, driver_dump);
2926 ipr_dump_location_data(ioa_cfg, driver_dump);
2927 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2928 ipr_dump_trace_data(ioa_cfg, driver_dump);
2929
2930 /* Update dump_header */
2931 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2932
2933 /* IOA Dump entry */
2934 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
1da177e4
LT		 2935 ioa_dump->hdr.len = 0;
2936 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2937 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2938
2939 /* First entries in sdt are actually a list of dump addresses and
2940 lengths to gather the real dump data. sdt represents the pointer
2941 to the ioa generated dump table. Dump data will be extracted based
2942 on entries in this table */
2943 sdt = &ioa_dump->sdt;
2944
2945 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2946 sizeof(struct ipr_sdt) / sizeof(__be32));
2947
2948 /* Smart Dump table is ready to use and the first entry is valid */
dcbad00e
WB		 2949 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
2950 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
1da177e4
LT		 2951 dev_err(&ioa_cfg->pdev->dev,
2952 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2953 rc, be32_to_cpu(sdt->hdr.state));
2954 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2955 ioa_cfg->sdt_state = DUMP_OBTAINED;
2956 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2957 return;
2958 }
2959
2960 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2961
2962 if (num_entries > IPR_NUM_SDT_ENTRIES)
2963 num_entries = IPR_NUM_SDT_ENTRIES;
2964
2965 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2966
2967 for (i = 0; i < num_entries; i++) {
2968 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2969 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2970 break;
2971 }
2972
2973 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
dcbad00e
WB		 2974 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
2975 if (ioa_cfg->sis64)
2976 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
2977 else {
2978 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2979 end_off = be32_to_cpu(sdt->entry[i].end_token);
2980
2981 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
2982 bytes_to_copy = end_off - start_off;
2983 else
2984 valid = 0;
2985 }
2986 if (valid) {
1da177e4
LT		 2987 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2988 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2989 continue;
2990 }
2991
2992 /* Copy data from adapter to driver buffers */
2993 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2994 bytes_to_copy);
2995
2996 ioa_dump->hdr.len += bytes_copied;
2997
2998 if (bytes_copied != bytes_to_copy) {
2999 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3000 break;
3001 }
3002 }
3003 }
3004 }
3005
3006 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3007
3008 /* Update dump_header */
3009 driver_dump->hdr.len += ioa_dump->hdr.len;
3010 wmb();
3011 ioa_cfg->sdt_state = DUMP_OBTAINED;
3012 LEAVE;
3013}
3014
3015#else
3016#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
3017#endif
3018
3019/**
3020 * ipr_release_dump - Free adapter dump memory
3021 * @kref: kref struct
3022 *
3023 * Return value:
3024 * nothing
3025 **/
3026static void ipr_release_dump(struct kref *kref)
3027{
3028 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
3029 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3030 unsigned long lock_flags = 0;
3031 int i;
3032
3033 ENTER;
3034 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3035 ioa_cfg->dump = NULL;
3036 ioa_cfg->sdt_state = INACTIVE;
3037 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3038
3039 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3040 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3041
3042 kfree(dump);
3043 LEAVE;
3044}
3045
3046/**
3047 * ipr_worker_thread - Worker thread
c4028958 3048 * @work: ioa config struct
1da177e4
LT		 3049 *
3050 * Called at task level from a work thread. This function takes care
3051 * of adding and removing device from the mid-layer as configuration
3052 * changes are detected by the adapter.
3053 *
3054 * Return value:
3055 * nothing
3056 **/
c4028958 3057static void ipr_worker_thread(struct work_struct *work)
1da177e4
LT		 3058{
3059 unsigned long lock_flags;
3060 struct ipr_resource_entry *res;
3061 struct scsi_device *sdev;
3062 struct ipr_dump *dump;
c4028958
DH		 3063 struct ipr_ioa_cfg *ioa_cfg =
3064 container_of(work, struct ipr_ioa_cfg, work_q);
1da177e4
LT		 3065 u8 bus, target, lun;
3066 int did_work;
3067
3068 ENTER;
3069 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3070
3071 if (ioa_cfg->sdt_state == GET_DUMP) {
3072 dump = ioa_cfg->dump;
3073 if (!dump) {
3074 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3075 return;
3076 }
3077 kref_get(&dump->kref);
3078 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3079 ipr_get_ioa_dump(ioa_cfg, dump);
3080 kref_put(&dump->kref, ipr_release_dump);
3081
3082 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3083 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
3084 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3085 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3086 return;
3087 }
3088
3089restart:
3090 do {
3091 did_work = 0;
3092 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
3093 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3094 return;
3095 }
3096
3097 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3098 if (res->del_from_ml && res->sdev) {
3099 did_work = 1;
3100 sdev = res->sdev;
3101 if (!scsi_device_get(sdev)) {
1da177e4
LT		 3102 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3103 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3104 scsi_remove_device(sdev);
3105 scsi_device_put(sdev);
3106 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3107 }
3108 break;
3109 }
3110 }
3111 } while(did_work);
3112
3113 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3114 if (res->add_to_ml) {
3e7ebdfa
WB		 3115 bus = res->bus;
3116 target = res->target;
3117 lun = res->lun;
1121b794 3118 res->add_to_ml = 0;
1da177e4
LT		 3119 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3120 scsi_add_device(ioa_cfg->host, bus, target, lun);
3121 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3122 goto restart;
3123 }
3124 }
3125
3126 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
ee959b00 3127 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
1da177e4
LT		 3128 LEAVE;
3129}
3130
3131#ifdef CONFIG_SCSI_IPR_TRACE
3132/**
3133 * ipr_read_trace - Dump the adapter trace
2c3c8bea 3134 * @filp: open sysfs file
1da177e4 3135 * @kobj: kobject struct
91a69029 3136 * @bin_attr: bin_attribute struct
1da177e4
LT		 3137 * @buf: buffer
3138 * @off: offset
3139 * @count: buffer size
3140 *
3141 * Return value:
3142 * number of bytes printed to buffer
3143 **/
2c3c8bea 3144static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
91a69029
ZR		 3145 struct bin_attribute *bin_attr,
3146 char *buf, loff_t off, size_t count)
1da177e4 3147{
ee959b00
TJ		 3148 struct device *dev = container_of(kobj, struct device, kobj);
3149 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 3150 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3151 unsigned long lock_flags = 0;
d777aaf3 3152 ssize_t ret;
1da177e4
LT		 3153
3154 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
d777aaf3
AM		 3155 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3156 IPR_TRACE_SIZE);
1da177e4 3157 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
d777aaf3
AM		 3158
3159 return ret;
1da177e4
LT		 3160}
3161
3162static struct bin_attribute ipr_trace_attr = {
3163 .attr = {
3164 .name = "trace",
3165 .mode = S_IRUGO,
3166 },
3167 .size = 0,
3168 .read = ipr_read_trace,
3169};
3170#endif
3171
3172/**
3173 * ipr_show_fw_version - Show the firmware version
ee959b00
TJ		 3174 * @dev: class device struct
3175 * @buf: buffer
1da177e4
LT		 3176 *
3177 * Return value:
3178 * number of bytes printed to buffer
3179 **/
ee959b00
TJ		 3180static ssize_t ipr_show_fw_version(struct device *dev,
3181 struct device_attribute *attr, char *buf)
1da177e4 3182{
ee959b00 3183 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 3184 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3185 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3186 unsigned long lock_flags = 0;
3187 int len;
3188
3189 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3190 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3191 ucode_vpd->major_release, ucode_vpd->card_type,
3192 ucode_vpd->minor_release[0],
3193 ucode_vpd->minor_release[1]);
3194 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3195 return len;
3196}
3197
ee959b00 3198static struct device_attribute ipr_fw_version_attr = {
1da177e4
LT		 3199 .attr = {
3200 .name = "fw_version",
3201 .mode = S_IRUGO,
3202 },
3203 .show = ipr_show_fw_version,
3204};
3205
3206/**
3207 * ipr_show_log_level - Show the adapter's error logging level
ee959b00
TJ		 3208 * @dev: class device struct
3209 * @buf: buffer
1da177e4
LT		 3210 *
3211 * Return value:
3212 * number of bytes printed to buffer
3213 **/
ee959b00
TJ		 3214static ssize_t ipr_show_log_level(struct device *dev,
3215 struct device_attribute *attr, char *buf)
1da177e4 3216{
ee959b00 3217 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 3218 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3219 unsigned long lock_flags = 0;
3220 int len;
3221
3222 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3223 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3224 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3225 return len;
3226}
3227
3228/**
3229 * ipr_store_log_level - Change the adapter's error logging level
ee959b00
TJ		 3230 * @dev: class device struct
3231 * @buf: buffer
1da177e4
LT		 3232 *
3233 * Return value:
3234 * number of bytes printed to buffer
3235 **/
ee959b00
TJ		 3236static ssize_t ipr_store_log_level(struct device *dev,
3237 struct device_attribute *attr,
1da177e4
LT		 3238 const char *buf, size_t count)
3239{
ee959b00 3240 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 3241 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3242 unsigned long lock_flags = 0;
3243
3244 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3245 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3246 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3247 return strlen(buf);
3248}
3249
ee959b00 3250static struct device_attribute ipr_log_level_attr = {
1da177e4
LT		 3251 .attr = {
3252 .name = "log_level",
3253 .mode = S_IRUGO | S_IWUSR,
3254 },
3255 .show = ipr_show_log_level,
3256 .store = ipr_store_log_level
3257};
3258
3259/**
3260 * ipr_store_diagnostics - IOA Diagnostics interface
ee959b00
TJ		 3261 * @dev: device struct
3262 * @buf: buffer
3263 * @count: buffer size
1da177e4
LT		 3264 *
3265 * This function will reset the adapter and wait a reasonable
3266 * amount of time for any errors that the adapter might log.
3267 *
3268 * Return value:
3269 * count on success / other on failure
3270 **/
ee959b00
TJ		 3271static ssize_t ipr_store_diagnostics(struct device *dev,
3272 struct device_attribute *attr,
1da177e4
LT		 3273 const char *buf, size_t count)
3274{
ee959b00 3275 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 3276 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3277 unsigned long lock_flags = 0;
3278 int rc = count;
3279
3280 if (!capable(CAP_SYS_ADMIN))
3281 return -EACCES;
3282
1da177e4 3283 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 3284 while(ioa_cfg->in_reset_reload) {
3285 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3286 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3287 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3288 }
3289
1da177e4
LT		 3290 ioa_cfg->errors_logged = 0;
3291 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3292
3293 if (ioa_cfg->in_reset_reload) {
3294 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3295 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3296
3297 /* Wait for a second for any errors to be logged */
3298 msleep(1000);
3299 } else {
3300 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3301 return -EIO;
3302 }
3303
3304 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3305 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3306 rc = -EIO;
3307 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3308
3309 return rc;
3310}
3311
ee959b00 3312static struct device_attribute ipr_diagnostics_attr = {
1da177e4
LT		 3313 .attr = {
3314 .name = "run_diagnostics",
3315 .mode = S_IWUSR,
3316 },
3317 .store = ipr_store_diagnostics
3318};
3319
f37eb54b
BK		 3320/**
3321 * ipr_show_adapter_state - Show the adapter's state
ee959b00
TJ		 3322 * @class_dev: device struct
3323 * @buf: buffer
f37eb54b
BK		 3324 *
3325 * Return value:
3326 * number of bytes printed to buffer
3327 **/
ee959b00
TJ		 3328static ssize_t ipr_show_adapter_state(struct device *dev,
3329 struct device_attribute *attr, char *buf)
f37eb54b 3330{
ee959b00 3331 struct Scsi_Host *shost = class_to_shost(dev);
f37eb54b
BK		 3332 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3333 unsigned long lock_flags = 0;
3334 int len;
3335
3336 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3337 if (ioa_cfg->ioa_is_dead)
3338 len = snprintf(buf, PAGE_SIZE, "offline\n");
3339 else
3340 len = snprintf(buf, PAGE_SIZE, "online\n");
3341 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3342 return len;
3343}
3344
3345/**
3346 * ipr_store_adapter_state - Change adapter state
ee959b00
TJ		 3347 * @dev: device struct
3348 * @buf: buffer
3349 * @count: buffer size
f37eb54b
BK		 3350 *
3351 * This function will change the adapter's state.
3352 *
3353 * Return value:
3354 * count on success / other on failure
3355 **/
ee959b00
TJ		 3356static ssize_t ipr_store_adapter_state(struct device *dev,
3357 struct device_attribute *attr,
f37eb54b
BK		 3358 const char *buf, size_t count)
3359{
ee959b00 3360 struct Scsi_Host *shost = class_to_shost(dev);
f37eb54b
BK		 3361 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3362 unsigned long lock_flags;
3363 int result = count;
3364
3365 if (!capable(CAP_SYS_ADMIN))
3366 return -EACCES;
3367
3368 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3369 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
3370 ioa_cfg->ioa_is_dead = 0;
3371 ioa_cfg->reset_retries = 0;
3372 ioa_cfg->in_ioa_bringdown = 0;
3373 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3374 }
3375 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3376 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3377
3378 return result;
3379}
3380
ee959b00 3381static struct device_attribute ipr_ioa_state_attr = {
f37eb54b 3382 .attr = {
49dd0961 3383 .name = "online_state",
f37eb54b
BK		 3384 .mode = S_IRUGO | S_IWUSR,
3385 },
3386 .show = ipr_show_adapter_state,
3387 .store = ipr_store_adapter_state
3388};
3389
1da177e4
LT		 3390/**
3391 * ipr_store_reset_adapter - Reset the adapter
ee959b00
TJ		 3392 * @dev: device struct
3393 * @buf: buffer
3394 * @count: buffer size
1da177e4
LT		 3395 *
3396 * This function will reset the adapter.
3397 *
3398 * Return value:
3399 * count on success / other on failure
3400 **/
ee959b00
TJ		 3401static ssize_t ipr_store_reset_adapter(struct device *dev,
3402 struct device_attribute *attr,
1da177e4
LT		 3403 const char *buf, size_t count)
3404{
ee959b00 3405 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 3406 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3407 unsigned long lock_flags;
3408 int result = count;
3409
3410 if (!capable(CAP_SYS_ADMIN))
3411 return -EACCES;
3412
3413 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3414 if (!ioa_cfg->in_reset_reload)
3415 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3416 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3417 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3418
3419 return result;
3420}
3421
ee959b00 3422static struct device_attribute ipr_ioa_reset_attr = {
1da177e4
LT		 3423 .attr = {
3424 .name = "reset_host",
3425 .mode = S_IWUSR,
3426 },
3427 .store = ipr_store_reset_adapter
3428};
3429
3430/**
3431 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3432 * @buf_len: buffer length
3433 *
3434 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3435 * list to use for microcode download
3436 *
3437 * Return value:
3438 * pointer to sglist / NULL on failure
3439 **/
3440static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3441{
3442 int sg_size, order, bsize_elem, num_elem, i, j;
3443 struct ipr_sglist *sglist;
3444 struct scatterlist *scatterlist;
3445 struct page *page;
3446
3447 /* Get the minimum size per scatter/gather element */
3448 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3449
3450 /* Get the actual size per element */
3451 order = get_order(sg_size);
3452
3453 /* Determine the actual number of bytes per element */
3454 bsize_elem = PAGE_SIZE * (1 << order);
3455
3456 /* Determine the actual number of sg entries needed */
3457 if (buf_len % bsize_elem)
3458 num_elem = (buf_len / bsize_elem) + 1;
3459 else
3460 num_elem = buf_len / bsize_elem;
3461
3462 /* Allocate a scatter/gather list for the DMA */
0bc42e35 3463 sglist = kzalloc(sizeof(struct ipr_sglist) +
1da177e4
LT		 3464 (sizeof(struct scatterlist) * (num_elem - 1)),
3465 GFP_KERNEL);
3466
3467 if (sglist == NULL) {
3468 ipr_trace;
3469 return NULL;
3470 }
3471
1da177e4 3472 scatterlist = sglist->scatterlist;
45711f1a 3473 sg_init_table(scatterlist, num_elem);
1da177e4
LT		 3474
3475 sglist->order = order;
3476 sglist->num_sg = num_elem;
3477
3478 /* Allocate a bunch of sg elements */
3479 for (i = 0; i < num_elem; i++) {
3480 page = alloc_pages(GFP_KERNEL, order);
3481 if (!page) {
3482 ipr_trace;
3483
3484 /* Free up what we already allocated */
3485 for (j = i - 1; j >= 0; j--)
45711f1a 3486 __free_pages(sg_page(&scatterlist[j]), order);
1da177e4
LT		 3487 kfree(sglist);
3488 return NULL;
3489 }
3490
642f1490 3491 sg_set_page(&scatterlist[i], page, 0, 0);
1da177e4
LT		 3492 }
3493
3494 return sglist;
3495}
3496
3497/**
3498 * ipr_free_ucode_buffer - Frees a microcode download buffer
3499 * @p_dnld: scatter/gather list pointer
3500 *
3501 * Free a DMA'able ucode download buffer previously allocated with
3502 * ipr_alloc_ucode_buffer
3503 *
3504 * Return value:
3505 * nothing
3506 **/
3507static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3508{
3509 int i;
3510
3511 for (i = 0; i < sglist->num_sg; i++)
45711f1a 3512 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
1da177e4
LT		 3513
3514 kfree(sglist);
3515}
3516
3517/**
3518 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3519 * @sglist: scatter/gather list pointer
3520 * @buffer: buffer pointer
3521 * @len: buffer length
3522 *
3523 * Copy a microcode image from a user buffer into a buffer allocated by
3524 * ipr_alloc_ucode_buffer
3525 *
3526 * Return value:
3527 * 0 on success / other on failure
3528 **/
3529static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3530 u8 *buffer, u32 len)
3531{
3532 int bsize_elem, i, result = 0;
3533 struct scatterlist *scatterlist;
3534 void *kaddr;
3535
3536 /* Determine the actual number of bytes per element */
3537 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3538
3539 scatterlist = sglist->scatterlist;
3540
3541 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
45711f1a
JA		 3542 struct page *page = sg_page(&scatterlist[i]);
3543
3544 kaddr = kmap(page);
1da177e4 3545 memcpy(kaddr, buffer, bsize_elem);
45711f1a 3546 kunmap(page);
1da177e4
LT		 3547
3548 scatterlist[i].length = bsize_elem;
3549
3550 if (result != 0) {
3551 ipr_trace;
3552 return result;
3553 }
3554 }
3555
3556 if (len % bsize_elem) {
45711f1a
JA		 3557 struct page *page = sg_page(&scatterlist[i]);
3558
3559 kaddr = kmap(page);
1da177e4 3560 memcpy(kaddr, buffer, len % bsize_elem);
45711f1a 3561 kunmap(page);
1da177e4
LT		 3562
3563 scatterlist[i].length = len % bsize_elem;
3564 }
3565
3566 sglist->buffer_len = len;
3567 return result;
3568}
3569
a32c055f
WB		 3570/**
3571 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3572 * @ipr_cmd: ipr command struct
3573 * @sglist: scatter/gather list
3574 *
3575 * Builds a microcode download IOA data list (IOADL).
3576 *
3577 **/
3578static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3579 struct ipr_sglist *sglist)
3580{
3581 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3582 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3583 struct scatterlist *scatterlist = sglist->scatterlist;
3584 int i;
3585
3586 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3587 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3588 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3589
3590 ioarcb->ioadl_len =
3591 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3592 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3593 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3594 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3595 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3596 }
3597
3598 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3599}
3600
1da177e4 3601/**
12baa420 3602 * ipr_build_ucode_ioadl - Build a microcode download IOADL
1da177e4
LT		 3603 * @ipr_cmd: ipr command struct
3604 * @sglist: scatter/gather list
1da177e4 3605 *
12baa420 3606 * Builds a microcode download IOA data list (IOADL).
1da177e4 3607 *
1da177e4 3608 **/
12baa420
BK		 3609static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3610 struct ipr_sglist *sglist)
1da177e4 3611{
1da177e4 3612 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
a32c055f 3613 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
1da177e4
LT		 3614 struct scatterlist *scatterlist = sglist->scatterlist;
3615 int i;
3616
12baa420 3617 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
1da177e4 3618 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
a32c055f
WB		 3619 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3620
3621 ioarcb->ioadl_len =
1da177e4
LT		 3622 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3623
3624 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3625 ioadl[i].flags_and_data_len =
3626 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3627 ioadl[i].address =
3628 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3629 }
3630
12baa420
BK		 3631 ioadl[i-1].flags_and_data_len |=
3632 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3633}
3634
3635/**
3636 * ipr_update_ioa_ucode - Update IOA's microcode
3637 * @ioa_cfg: ioa config struct
3638 * @sglist: scatter/gather list
3639 *
3640 * Initiate an adapter reset to update the IOA's microcode
3641 *
3642 * Return value:
3643 * 0 on success / -EIO on failure
3644 **/
3645static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3646 struct ipr_sglist *sglist)
3647{
3648 unsigned long lock_flags;
3649
3650 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 3651 while(ioa_cfg->in_reset_reload) {
3652 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3653 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3654 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3655 }
12baa420
BK		 3656
3657 if (ioa_cfg->ucode_sglist) {
3658 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3659 dev_err(&ioa_cfg->pdev->dev,
3660 "Microcode download already in progress\n");
3661 return -EIO;
1da177e4 3662 }
12baa420
BK		 3663
3664 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3665 sglist->num_sg, DMA_TO_DEVICE);
3666
3667 if (!sglist->num_dma_sg) {
3668 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3669 dev_err(&ioa_cfg->pdev->dev,
3670 "Failed to map microcode download buffer!\n");
1da177e4
LT		 3671 return -EIO;
3672 }
3673
12baa420
BK		 3674 ioa_cfg->ucode_sglist = sglist;
3675 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3676 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3677 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3678
3679 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3680 ioa_cfg->ucode_sglist = NULL;
3681 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1da177e4
LT		 3682 return 0;
3683}
3684
3685/**
3686 * ipr_store_update_fw - Update the firmware on the adapter
ee959b00
TJ		 3687 * @class_dev: device struct
3688 * @buf: buffer
3689 * @count: buffer size
1da177e4
LT		 3690 *
3691 * This function will update the firmware on the adapter.
3692 *
3693 * Return value:
3694 * count on success / other on failure
3695 **/
ee959b00
TJ		 3696static ssize_t ipr_store_update_fw(struct device *dev,
3697 struct device_attribute *attr,
3698 const char *buf, size_t count)
1da177e4 3699{
ee959b00 3700 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 3701 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3702 struct ipr_ucode_image_header *image_hdr;
3703 const struct firmware *fw_entry;
3704 struct ipr_sglist *sglist;
1da177e4
LT		 3705 char fname[100];
3706 char *src;
3707 int len, result, dnld_size;
3708
3709 if (!capable(CAP_SYS_ADMIN))
3710 return -EACCES;
3711
3712 len = snprintf(fname, 99, "%s", buf);
3713 fname[len-1] = '\0';
3714
3715 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3716 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3717 return -EIO;
3718 }
3719
3720 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3721
3722 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3723 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3724 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3725 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3726 release_firmware(fw_entry);
3727 return -EINVAL;
3728 }
3729
3730 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3731 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3732 sglist = ipr_alloc_ucode_buffer(dnld_size);
3733
3734 if (!sglist) {
3735 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3736 release_firmware(fw_entry);
3737 return -ENOMEM;
3738 }
3739
3740 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3741
3742 if (result) {
3743 dev_err(&ioa_cfg->pdev->dev,
3744 "Microcode buffer copy to DMA buffer failed\n");
12baa420 3745 goto out;
1da177e4
LT		 3746 }
3747
12baa420 3748 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
1da177e4 3749
12baa420
BK		 3750 if (!result)
3751 result = count;
3752out:
1da177e4
LT		 3753 ipr_free_ucode_buffer(sglist);
3754 release_firmware(fw_entry);
12baa420 3755 return result;
1da177e4
LT		 3756}
3757
ee959b00 3758static struct device_attribute ipr_update_fw_attr = {
1da177e4
LT		 3759 .attr = {
3760 .name = "update_fw",
3761 .mode = S_IWUSR,
3762 },
3763 .store = ipr_store_update_fw
3764};
3765
75576bb9
WB		 3766/**
3767 * ipr_show_fw_type - Show the adapter's firmware type.
3768 * @dev: class device struct
3769 * @buf: buffer
3770 *
3771 * Return value:
3772 * number of bytes printed to buffer
3773 **/
3774static ssize_t ipr_show_fw_type(struct device *dev,
3775 struct device_attribute *attr, char *buf)
3776{
3777 struct Scsi_Host *shost = class_to_shost(dev);
3778 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3779 unsigned long lock_flags = 0;
3780 int len;
3781
3782 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3783 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
3784 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3785 return len;
3786}
3787
3788static struct device_attribute ipr_ioa_fw_type_attr = {
3789 .attr = {
3790 .name = "fw_type",
3791 .mode = S_IRUGO,
3792 },
3793 .show = ipr_show_fw_type
3794};
3795
ee959b00 3796static struct device_attribute *ipr_ioa_attrs[] = {
1da177e4
LT		 3797 &ipr_fw_version_attr,
3798 &ipr_log_level_attr,
3799 &ipr_diagnostics_attr,
f37eb54b 3800 &ipr_ioa_state_attr,
1da177e4
LT		 3801 &ipr_ioa_reset_attr,
3802 &ipr_update_fw_attr,
75576bb9 3803 &ipr_ioa_fw_type_attr,
1da177e4
LT		 3804 NULL,
3805};
3806
3807#ifdef CONFIG_SCSI_IPR_DUMP
3808/**
3809 * ipr_read_dump - Dump the adapter
2c3c8bea 3810 * @filp: open sysfs file
1da177e4 3811 * @kobj: kobject struct
91a69029 3812 * @bin_attr: bin_attribute struct
1da177e4
LT		 3813 * @buf: buffer
3814 * @off: offset
3815 * @count: buffer size
3816 *
3817 * Return value:
3818 * number of bytes printed to buffer
3819 **/
2c3c8bea 3820static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
91a69029
ZR		 3821 struct bin_attribute *bin_attr,
3822 char *buf, loff_t off, size_t count)
1da177e4 3823{
ee959b00 3824 struct device *cdev = container_of(kobj, struct device, kobj);
1da177e4
LT		 3825 struct Scsi_Host *shost = class_to_shost(cdev);
3826 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3827 struct ipr_dump *dump;
3828 unsigned long lock_flags = 0;
3829 char *src;
3830 int len;
3831 size_t rc = count;
3832
3833 if (!capable(CAP_SYS_ADMIN))
3834 return -EACCES;
3835
3836 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3837 dump = ioa_cfg->dump;
3838
3839 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3840 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3841 return 0;
3842 }
3843 kref_get(&dump->kref);
3844 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3845
3846 if (off > dump->driver_dump.hdr.len) {
3847 kref_put(&dump->kref, ipr_release_dump);
3848 return 0;
3849 }
3850
3851 if (off + count > dump->driver_dump.hdr.len) {
3852 count = dump->driver_dump.hdr.len - off;
3853 rc = count;
3854 }
3855
3856 if (count && off < sizeof(dump->driver_dump)) {
3857 if (off + count > sizeof(dump->driver_dump))
3858 len = sizeof(dump->driver_dump) - off;
3859 else
3860 len = count;
3861 src = (u8 *)&dump->driver_dump + off;
3862 memcpy(buf, src, len);
3863 buf += len;
3864 off += len;
3865 count -= len;
3866 }
3867
3868 off -= sizeof(dump->driver_dump);
3869
3870 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3871 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3872 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3873 else
3874 len = count;
3875 src = (u8 *)&dump->ioa_dump + off;
3876 memcpy(buf, src, len);
3877 buf += len;
3878 off += len;
3879 count -= len;
3880 }
3881
3882 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3883
3884 while (count) {
3885 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3886 len = PAGE_ALIGN(off) - off;
3887 else
3888 len = count;
3889 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3890 src += off & ~PAGE_MASK;
3891 memcpy(buf, src, len);
3892 buf += len;
3893 off += len;
3894 count -= len;
3895 }
3896
3897 kref_put(&dump->kref, ipr_release_dump);
3898 return rc;
3899}
3900
3901/**
3902 * ipr_alloc_dump - Prepare for adapter dump
3903 * @ioa_cfg: ioa config struct
3904 *
3905 * Return value:
3906 * 0 on success / other on failure
3907 **/
3908static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3909{
3910 struct ipr_dump *dump;
3911 unsigned long lock_flags = 0;
3912
0bc42e35 3913 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
1da177e4
LT		 3914
3915 if (!dump) {
3916 ipr_err("Dump memory allocation failed\n");
3917 return -ENOMEM;
3918 }
3919
1da177e4
LT		 3920 kref_init(&dump->kref);
3921 dump->ioa_cfg = ioa_cfg;
3922
3923 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3924
3925 if (INACTIVE != ioa_cfg->sdt_state) {
3926 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3927 kfree(dump);
3928 return 0;
3929 }
3930
3931 ioa_cfg->dump = dump;
3932 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3933 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3934 ioa_cfg->dump_taken = 1;
3935 schedule_work(&ioa_cfg->work_q);
3936 }
3937 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3938
1da177e4
LT		 3939 return 0;
3940}
3941
3942/**
3943 * ipr_free_dump - Free adapter dump memory
3944 * @ioa_cfg: ioa config struct
3945 *
3946 * Return value:
3947 * 0 on success / other on failure
3948 **/
3949static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3950{
3951 struct ipr_dump *dump;
3952 unsigned long lock_flags = 0;
3953
3954 ENTER;
3955
3956 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3957 dump = ioa_cfg->dump;
3958 if (!dump) {
3959 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3960 return 0;
3961 }
3962
3963 ioa_cfg->dump = NULL;
3964 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3965
3966 kref_put(&dump->kref, ipr_release_dump);
3967
3968 LEAVE;
3969 return 0;
3970}
3971
3972/**
3973 * ipr_write_dump - Setup dump state of adapter
2c3c8bea 3974 * @filp: open sysfs file
1da177e4 3975 * @kobj: kobject struct
91a69029 3976 * @bin_attr: bin_attribute struct
1da177e4
LT		 3977 * @buf: buffer
3978 * @off: offset
3979 * @count: buffer size
3980 *
3981 * Return value:
3982 * number of bytes printed to buffer
3983 **/
2c3c8bea 3984static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
91a69029
ZR		 3985 struct bin_attribute *bin_attr,
3986 char *buf, loff_t off, size_t count)
1da177e4 3987{
ee959b00 3988 struct device *cdev = container_of(kobj, struct device, kobj);
1da177e4
LT		 3989 struct Scsi_Host *shost = class_to_shost(cdev);
3990 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3991 int rc;
3992
3993 if (!capable(CAP_SYS_ADMIN))
3994 return -EACCES;
3995
3996 if (buf[0] == '1')
3997 rc = ipr_alloc_dump(ioa_cfg);
3998 else if (buf[0] == '0')
3999 rc = ipr_free_dump(ioa_cfg);
4000 else
4001 return -EINVAL;
4002
4003 if (rc)
4004 return rc;
4005 else
4006 return count;
4007}
4008
4009static struct bin_attribute ipr_dump_attr = {
4010 .attr = {
4011 .name = "dump",
4012 .mode = S_IRUSR | S_IWUSR,
4013 },
4014 .size = 0,
4015 .read = ipr_read_dump,
4016 .write = ipr_write_dump
4017};
4018#else
4019static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4020#endif
4021
4022/**
4023 * ipr_change_queue_depth - Change the device's queue depth
4024 * @sdev: scsi device struct
4025 * @qdepth: depth to set
e881a172 4026 * @reason: calling context
1da177e4
LT		 4027 *
4028 * Return value:
4029 * actual depth set
4030 **/
e881a172
MC		 4031static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth,
4032 int reason)
1da177e4 4033{
35a39691
BK		 4034 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4035 struct ipr_resource_entry *res;
4036 unsigned long lock_flags = 0;
4037
e881a172
MC		 4038 if (reason != SCSI_QDEPTH_DEFAULT)
4039 return -EOPNOTSUPP;
4040
35a39691
BK		 4041 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4042 res = (struct ipr_resource_entry *)sdev->hostdata;
4043
4044 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4045 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4046 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4047
1da177e4
LT		 4048 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
4049 return sdev->queue_depth;
4050}
4051
4052/**
4053 * ipr_change_queue_type - Change the device's queue type
4054 * @dsev: scsi device struct
4055 * @tag_type: type of tags to use
4056 *
4057 * Return value:
4058 * actual queue type set
4059 **/
4060static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
4061{
4062 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4063 struct ipr_resource_entry *res;
4064 unsigned long lock_flags = 0;
4065
4066 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4067 res = (struct ipr_resource_entry *)sdev->hostdata;
4068
4069 if (res) {
4070 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
4071 /*
4072 * We don't bother quiescing the device here since the
4073 * adapter firmware does it for us.
4074 */
4075 scsi_set_tag_type(sdev, tag_type);
4076
4077 if (tag_type)
4078 scsi_activate_tcq(sdev, sdev->queue_depth);
4079 else
4080 scsi_deactivate_tcq(sdev, sdev->queue_depth);
4081 } else
4082 tag_type = 0;
4083 } else
4084 tag_type = 0;
4085
4086 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4087 return tag_type;
4088}
4089
4090/**
4091 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4092 * @dev: device struct
46d74563 4093 * @attr: device attribute structure
1da177e4
LT		 4094 * @buf: buffer
4095 *
4096 * Return value:
4097 * number of bytes printed to buffer
4098 **/
10523b3b 4099static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 4100{
4101 struct scsi_device *sdev = to_scsi_device(dev);
4102 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4103 struct ipr_resource_entry *res;
4104 unsigned long lock_flags = 0;
4105 ssize_t len = -ENXIO;
4106
4107 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4108 res = (struct ipr_resource_entry *)sdev->hostdata;
4109 if (res)
3e7ebdfa 4110 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
1da177e4
LT		 4111 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4112 return len;
4113}
4114
4115static struct device_attribute ipr_adapter_handle_attr = {
4116 .attr = {
4117 .name = "adapter_handle",
4118 .mode = S_IRUSR,
4119 },
4120 .show = ipr_show_adapter_handle
4121};
4122
3e7ebdfa 4123/**
5adcbeb3
WB		 4124 * ipr_show_resource_path - Show the resource path or the resource address for
4125 * this device.
3e7ebdfa 4126 * @dev: device struct
46d74563 4127 * @attr: device attribute structure
3e7ebdfa
WB		 4128 * @buf: buffer
4129 *
4130 * Return value:
4131 * number of bytes printed to buffer
4132 **/
4133static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4134{
4135 struct scsi_device *sdev = to_scsi_device(dev);
4136 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4137 struct ipr_resource_entry *res;
4138 unsigned long lock_flags = 0;
4139 ssize_t len = -ENXIO;
4140 char buffer[IPR_MAX_RES_PATH_LENGTH];
4141
4142 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4143 res = (struct ipr_resource_entry *)sdev->hostdata;
5adcbeb3 4144 if (res && ioa_cfg->sis64)
3e7ebdfa 4145 len = snprintf(buf, PAGE_SIZE, "%s\n",
5adcbeb3
WB		 4146 ipr_format_res_path(res->res_path, buffer,
4147 sizeof(buffer)));
4148 else if (res)
4149 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4150 res->bus, res->target, res->lun);
4151
3e7ebdfa
WB		 4152 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4153 return len;
4154}
4155
4156static struct device_attribute ipr_resource_path_attr = {
4157 .attr = {
4158 .name = "resource_path",
75576bb9 4159 .mode = S_IRUGO,
3e7ebdfa
WB		 4160 },
4161 .show = ipr_show_resource_path
4162};
4163
46d74563
WB		 4164/**
4165 * ipr_show_device_id - Show the device_id for this device.
4166 * @dev: device struct
4167 * @attr: device attribute structure
4168 * @buf: buffer
4169 *
4170 * Return value:
4171 * number of bytes printed to buffer
4172 **/
4173static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4174{
4175 struct scsi_device *sdev = to_scsi_device(dev);
4176 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4177 struct ipr_resource_entry *res;
4178 unsigned long lock_flags = 0;
4179 ssize_t len = -ENXIO;
4180
4181 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4182 res = (struct ipr_resource_entry *)sdev->hostdata;
4183 if (res && ioa_cfg->sis64)
4184 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->dev_id);
4185 else if (res)
4186 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4187
4188 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4189 return len;
4190}
4191
4192static struct device_attribute ipr_device_id_attr = {
4193 .attr = {
4194 .name = "device_id",
4195 .mode = S_IRUGO,
4196 },
4197 .show = ipr_show_device_id
4198};
4199
75576bb9
WB		 4200/**
4201 * ipr_show_resource_type - Show the resource type for this device.
4202 * @dev: device struct
46d74563 4203 * @attr: device attribute structure
75576bb9
WB		 4204 * @buf: buffer
4205 *
4206 * Return value:
4207 * number of bytes printed to buffer
4208 **/
4209static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4210{
4211 struct scsi_device *sdev = to_scsi_device(dev);
4212 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4213 struct ipr_resource_entry *res;
4214 unsigned long lock_flags = 0;
4215 ssize_t len = -ENXIO;
4216
4217 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4218 res = (struct ipr_resource_entry *)sdev->hostdata;
4219
4220 if (res)
4221 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4222
4223 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4224 return len;
4225}
4226
4227static struct device_attribute ipr_resource_type_attr = {
4228 .attr = {
4229 .name = "resource_type",
4230 .mode = S_IRUGO,
4231 },
4232 .show = ipr_show_resource_type
4233};
4234
1da177e4
LT		 4235static struct device_attribute *ipr_dev_attrs[] = {
4236 &ipr_adapter_handle_attr,
3e7ebdfa 4237 &ipr_resource_path_attr,
46d74563 4238 &ipr_device_id_attr,
75576bb9 4239 &ipr_resource_type_attr,
1da177e4
LT		 4240 NULL,
4241};
4242
4243/**
4244 * ipr_biosparam - Return the HSC mapping
4245 * @sdev: scsi device struct
4246 * @block_device: block device pointer
4247 * @capacity: capacity of the device
4248 * @parm: Array containing returned HSC values.
4249 *
4250 * This function generates the HSC parms that fdisk uses.
4251 * We want to make sure we return something that places partitions
4252 * on 4k boundaries for best performance with the IOA.
4253 *
4254 * Return value:
4255 * 0 on success
4256 **/
4257static int ipr_biosparam(struct scsi_device *sdev,
4258 struct block_device *block_device,
4259 sector_t capacity, int *parm)
4260{
4261 int heads, sectors;
4262 sector_t cylinders;
4263
4264 heads = 128;
4265 sectors = 32;
4266
4267 cylinders = capacity;
4268 sector_div(cylinders, (128 * 32));
4269
4270 /* return result */
4271 parm[0] = heads;
4272 parm[1] = sectors;
4273 parm[2] = cylinders;
4274
4275 return 0;
4276}
4277
35a39691
BK		 4278/**
4279 * ipr_find_starget - Find target based on bus/target.
4280 * @starget: scsi target struct
4281 *
4282 * Return value:
4283 * resource entry pointer if found / NULL if not found
4284 **/
4285static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4286{
4287 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4288 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4289 struct ipr_resource_entry *res;
4290
4291 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3e7ebdfa
WB		 4292 if ((res->bus == starget->channel) &&
4293 (res->target == starget->id) &&
4294 (res->lun == 0)) {
35a39691
BK		 4295 return res;
4296 }
4297 }
4298
4299 return NULL;
4300}
4301
4302static struct ata_port_info sata_port_info;
4303
4304/**
4305 * ipr_target_alloc - Prepare for commands to a SCSI target
4306 * @starget: scsi target struct
4307 *
4308 * If the device is a SATA device, this function allocates an
4309 * ATA port with libata, else it does nothing.
4310 *
4311 * Return value:
4312 * 0 on success / non-0 on failure
4313 **/
4314static int ipr_target_alloc(struct scsi_target *starget)
4315{
4316 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4317 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4318 struct ipr_sata_port *sata_port;
4319 struct ata_port *ap;
4320 struct ipr_resource_entry *res;
4321 unsigned long lock_flags;
4322
4323 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4324 res = ipr_find_starget(starget);
4325 starget->hostdata = NULL;
4326
4327 if (res && ipr_is_gata(res)) {
4328 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4329 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4330 if (!sata_port)
4331 return -ENOMEM;
4332
4333 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4334 if (ap) {
4335 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4336 sata_port->ioa_cfg = ioa_cfg;
4337 sata_port->ap = ap;
4338 sata_port->res = res;
4339
4340 res->sata_port = sata_port;
4341 ap->private_data = sata_port;
4342 starget->hostdata = sata_port;
4343 } else {
4344 kfree(sata_port);
4345 return -ENOMEM;
4346 }
4347 }
4348 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4349
4350 return 0;
4351}
4352
4353/**
4354 * ipr_target_destroy - Destroy a SCSI target
4355 * @starget: scsi target struct
4356 *
4357 * If the device was a SATA device, this function frees the libata
4358 * ATA port, else it does nothing.
4359 *
4360 **/
4361static void ipr_target_destroy(struct scsi_target *starget)
4362{
4363 struct ipr_sata_port *sata_port = starget->hostdata;
3e7ebdfa
WB		 4364 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4365 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4366
4367 if (ioa_cfg->sis64) {
4368 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4369 clear_bit(starget->id, ioa_cfg->array_ids);
4370 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4371 clear_bit(starget->id, ioa_cfg->vset_ids);
4372 else if (starget->channel == 0)
4373 clear_bit(starget->id, ioa_cfg->target_ids);
4374 }
35a39691
BK		 4375
4376 if (sata_port) {
4377 starget->hostdata = NULL;
4378 ata_sas_port_destroy(sata_port->ap);
4379 kfree(sata_port);
4380 }
4381}
4382
4383/**
4384 * ipr_find_sdev - Find device based on bus/target/lun.
4385 * @sdev: scsi device struct
4386 *
4387 * Return value:
4388 * resource entry pointer if found / NULL if not found
4389 **/
4390static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4391{
4392 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4393 struct ipr_resource_entry *res;
4394
4395 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3e7ebdfa
WB		 4396 if ((res->bus == sdev->channel) &&
4397 (res->target == sdev->id) &&
4398 (res->lun == sdev->lun))
35a39691
BK		 4399 return res;
4400 }
4401
4402 return NULL;
4403}
4404
1da177e4
LT		 4405/**
4406 * ipr_slave_destroy - Unconfigure a SCSI device
4407 * @sdev: scsi device struct
4408 *
4409 * Return value:
4410 * nothing
4411 **/
4412static void ipr_slave_destroy(struct scsi_device *sdev)
4413{
4414 struct ipr_resource_entry *res;
4415 struct ipr_ioa_cfg *ioa_cfg;
4416 unsigned long lock_flags = 0;
4417
4418 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4419
4420 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4421 res = (struct ipr_resource_entry *) sdev->hostdata;
4422 if (res) {
35a39691 4423 if (res->sata_port)
3e4ec344 4424 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
1da177e4
LT		 4425 sdev->hostdata = NULL;
4426 res->sdev = NULL;
35a39691 4427 res->sata_port = NULL;
1da177e4
LT		 4428 }
4429 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4430}
4431
4432/**
4433 * ipr_slave_configure - Configure a SCSI device
4434 * @sdev: scsi device struct
4435 *
4436 * This function configures the specified scsi device.
4437 *
4438 * Return value:
4439 * 0 on success
4440 **/
4441static int ipr_slave_configure(struct scsi_device *sdev)
4442{
4443 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4444 struct ipr_resource_entry *res;
dd406ef8 4445 struct ata_port *ap = NULL;
1da177e4 4446 unsigned long lock_flags = 0;
3e7ebdfa 4447 char buffer[IPR_MAX_RES_PATH_LENGTH];
1da177e4
LT		 4448
4449 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4450 res = sdev->hostdata;
4451 if (res) {
4452 if (ipr_is_af_dasd_device(res))
4453 sdev->type = TYPE_RAID;
0726ce26 4454 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
1da177e4 4455 sdev->scsi_level = 4;
0726ce26
BK		 4456 sdev->no_uld_attach = 1;
4457 }
1da177e4 4458 if (ipr_is_vset_device(res)) {
242f9dcb
JA		 4459 blk_queue_rq_timeout(sdev->request_queue,
4460 IPR_VSET_RW_TIMEOUT);
086fa5ff 4461 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
1da177e4 4462 }
dd406ef8
BK		 4463 if (ipr_is_gata(res) && res->sata_port)
4464 ap = res->sata_port->ap;
4465 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4466
4467 if (ap) {
35a39691 4468 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
dd406ef8
BK		 4469 ata_sas_slave_configure(sdev, ap);
4470 } else
35a39691 4471 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3e7ebdfa
WB		 4472 if (ioa_cfg->sis64)
4473 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
5adcbeb3
WB		 4474 ipr_format_res_path(res->res_path, buffer,
4475 sizeof(buffer)));
dd406ef8 4476 return 0;
1da177e4
LT		 4477 }
4478 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4479 return 0;
4480}
4481
35a39691
BK		 4482/**
4483 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4484 * @sdev: scsi device struct
4485 *
4486 * This function initializes an ATA port so that future commands
4487 * sent through queuecommand will work.
4488 *
4489 * Return value:
4490 * 0 on success
4491 **/
4492static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4493{
4494 struct ipr_sata_port *sata_port = NULL;
4495 int rc = -ENXIO;
4496
4497 ENTER;
4498 if (sdev->sdev_target)
4499 sata_port = sdev->sdev_target->hostdata;
4500 if (sata_port)
4501 rc = ata_sas_port_init(sata_port->ap);
4502 if (rc)
4503 ipr_slave_destroy(sdev);
4504
4505 LEAVE;
4506 return rc;
4507}
4508
1da177e4
LT		 4509/**
4510 * ipr_slave_alloc - Prepare for commands to a device.
4511 * @sdev: scsi device struct
4512 *
4513 * This function saves a pointer to the resource entry
4514 * in the scsi device struct if the device exists. We
4515 * can then use this pointer in ipr_queuecommand when
4516 * handling new commands.
4517 *
4518 * Return value:
692aebfc 4519 * 0 on success / -ENXIO if device does not exist
1da177e4
LT		 4520 **/
4521static int ipr_slave_alloc(struct scsi_device *sdev)
4522{
4523 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4524 struct ipr_resource_entry *res;
4525 unsigned long lock_flags;
692aebfc 4526 int rc = -ENXIO;
1da177e4
LT		 4527
4528 sdev->hostdata = NULL;
4529
4530 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4531
35a39691
BK		 4532 res = ipr_find_sdev(sdev);
4533 if (res) {
4534 res->sdev = sdev;
4535 res->add_to_ml = 0;
4536 res->in_erp = 0;
4537 sdev->hostdata = res;
4538 if (!ipr_is_naca_model(res))
4539 res->needs_sync_complete = 1;
4540 rc = 0;
4541 if (ipr_is_gata(res)) {
4542 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4543 return ipr_ata_slave_alloc(sdev);
1da177e4
LT		 4544 }
4545 }
4546
4547 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4548
692aebfc 4549 return rc;
1da177e4
LT		 4550}
4551
4552/**
4553 * ipr_eh_host_reset - Reset the host adapter
4554 * @scsi_cmd: scsi command struct
4555 *
4556 * Return value:
4557 * SUCCESS / FAILED
4558 **/
df0ae249 4559static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 4560{
4561 struct ipr_ioa_cfg *ioa_cfg;
4562 int rc;
4563
4564 ENTER;
4565 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4566
4567 dev_err(&ioa_cfg->pdev->dev,
4568 "Adapter being reset as a result of error recovery.\n");
4569
4570 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4571 ioa_cfg->sdt_state = GET_DUMP;
4572
4573 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4574
4575 LEAVE;
4576 return rc;
4577}
4578
df0ae249
JG		 4579static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
4580{
4581 int rc;
4582
4583 spin_lock_irq(cmd->device->host->host_lock);
4584 rc = __ipr_eh_host_reset(cmd);
4585 spin_unlock_irq(cmd->device->host->host_lock);
4586
4587 return rc;
4588}
4589
c6513096
BK		 4590/**
4591 * ipr_device_reset - Reset the device
4592 * @ioa_cfg: ioa config struct
4593 * @res: resource entry struct
4594 *
4595 * This function issues a device reset to the affected device.
4596 * If the device is a SCSI device, a LUN reset will be sent
4597 * to the device first. If that does not work, a target reset
35a39691
BK		 4598 * will be sent. If the device is a SATA device, a PHY reset will
4599 * be sent.
c6513096
BK		 4600 *
4601 * Return value:
4602 * 0 on success / non-zero on failure
4603 **/
4604static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
4605 struct ipr_resource_entry *res)
4606{
4607 struct ipr_cmnd *ipr_cmd;
4608 struct ipr_ioarcb *ioarcb;
4609 struct ipr_cmd_pkt *cmd_pkt;
35a39691 4610 struct ipr_ioarcb_ata_regs *regs;
c6513096
BK		 4611 u32 ioasc;
4612
4613 ENTER;
4614 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4615 ioarcb = &ipr_cmd->ioarcb;
4616 cmd_pkt = &ioarcb->cmd_pkt;
a32c055f
WB		 4617
4618 if (ipr_cmd->ioa_cfg->sis64) {
4619 regs = &ipr_cmd->i.ata_ioadl.regs;
4620 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
4621 } else
4622 regs = &ioarcb->u.add_data.u.regs;
c6513096 4623
3e7ebdfa 4624 ioarcb->res_handle = res->res_handle;
c6513096
BK		 4625 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4626 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
35a39691
BK		 4627 if (ipr_is_gata(res)) {
4628 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
a32c055f 4629 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
35a39691
BK		 4630 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
4631 }
c6513096
BK		 4632
4633 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
96d21f00 4634 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
c6513096 4635 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
96d21f00
WB		 4636 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
4637 if (ipr_cmd->ioa_cfg->sis64)
4638 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
4639 sizeof(struct ipr_ioasa_gata));
4640 else
4641 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
4642 sizeof(struct ipr_ioasa_gata));
4643 }
c6513096
BK		 4644
4645 LEAVE;
4646 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
4647}
4648
35a39691
BK		 4649/**
4650 * ipr_sata_reset - Reset the SATA port
cc0680a5 4651 * @link: SATA link to reset
35a39691
BK		 4652 * @classes: class of the attached device
4653 *
cc0680a5 4654 * This function issues a SATA phy reset to the affected ATA link.
35a39691
BK		 4655 *
4656 * Return value:
4657 * 0 on success / non-zero on failure
4658 **/
cc0680a5 4659static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
120bda35 4660 unsigned long deadline)
35a39691 4661{
cc0680a5 4662 struct ipr_sata_port *sata_port = link->ap->private_data;
35a39691
BK		 4663 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4664 struct ipr_resource_entry *res;
4665 unsigned long lock_flags = 0;
4666 int rc = -ENXIO;
4667
4668 ENTER;
4669 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
73d98ff0
BK		 4670 while(ioa_cfg->in_reset_reload) {
4671 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4672 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4673 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4674 }
4675
35a39691
BK		 4676 res = sata_port->res;
4677 if (res) {
4678 rc = ipr_device_reset(ioa_cfg, res);
3e7ebdfa 4679 *classes = res->ata_class;
35a39691
BK		 4680 }
4681
4682 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4683 LEAVE;
4684 return rc;
4685}
4686
1da177e4
LT		 4687/**
4688 * ipr_eh_dev_reset - Reset the device
4689 * @scsi_cmd: scsi command struct
4690 *
4691 * This function issues a device reset to the affected device.
4692 * A LUN reset will be sent to the device first. If that does
4693 * not work, a target reset will be sent.
4694 *
4695 * Return value:
4696 * SUCCESS / FAILED
4697 **/
94d0e7b8 4698static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 4699{
4700 struct ipr_cmnd *ipr_cmd;
4701 struct ipr_ioa_cfg *ioa_cfg;
4702 struct ipr_resource_entry *res;
35a39691
BK		 4703 struct ata_port *ap;
4704 int rc = 0;
1da177e4
LT		 4705
4706 ENTER;
4707 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4708 res = scsi_cmd->device->hostdata;
4709
eeb88307 4710 if (!res)
1da177e4
LT		 4711 return FAILED;
4712
4713 /*
4714 * If we are currently going through reset/reload, return failed. This will force the
4715 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
4716 * reset to complete
4717 */
4718 if (ioa_cfg->in_reset_reload)
4719 return FAILED;
4720 if (ioa_cfg->ioa_is_dead)
4721 return FAILED;
4722
4723 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3e7ebdfa 4724 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
1da177e4
LT		 4725 if (ipr_cmd->scsi_cmd)
4726 ipr_cmd->done = ipr_scsi_eh_done;
24d6f2b5
BK		 4727 if (ipr_cmd->qc)
4728 ipr_cmd->done = ipr_sata_eh_done;
7402ecef
BK		 4729 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
4730 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
4731 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
4732 }
1da177e4
LT		 4733 }
4734 }
4735
4736 res->resetting_device = 1;
fb3ed3cb 4737 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
35a39691
BK		 4738
4739 if (ipr_is_gata(res) && res->sata_port) {
4740 ap = res->sata_port->ap;
4741 spin_unlock_irq(scsi_cmd->device->host->host_lock);
a1efdaba 4742 ata_std_error_handler(ap);
35a39691 4743 spin_lock_irq(scsi_cmd->device->host->host_lock);
5af23d26
BK		 4744
4745 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3e7ebdfa 4746 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
5af23d26
BK		 4747 rc = -EIO;
4748 break;
4749 }
4750 }
35a39691
BK		 4751 } else
4752 rc = ipr_device_reset(ioa_cfg, res);
1da177e4
LT		 4753 res->resetting_device = 0;
4754
1da177e4 4755 LEAVE;
c6513096 4756 return (rc ? FAILED : SUCCESS);
1da177e4
LT		 4757}
4758
94d0e7b8
JG		 4759static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
4760{
4761 int rc;
4762
4763 spin_lock_irq(cmd->device->host->host_lock);
4764 rc = __ipr_eh_dev_reset(cmd);
4765 spin_unlock_irq(cmd->device->host->host_lock);
4766
4767 return rc;
4768}
4769
1da177e4
LT		 4770/**
4771 * ipr_bus_reset_done - Op done function for bus reset.
4772 * @ipr_cmd: ipr command struct
4773 *
4774 * This function is the op done function for a bus reset
4775 *
4776 * Return value:
4777 * none
4778 **/
4779static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
4780{
4781 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4782 struct ipr_resource_entry *res;
4783
4784 ENTER;
3e7ebdfa
WB		 4785 if (!ioa_cfg->sis64)
4786 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4787 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
4788 scsi_report_bus_reset(ioa_cfg->host, res->bus);
4789 break;
4790 }
1da177e4 4791 }
1da177e4
LT		 4792
4793 /*
4794 * If abort has not completed, indicate the reset has, else call the
4795 * abort's done function to wake the sleeping eh thread
4796 */
4797 if (ipr_cmd->sibling->sibling)
4798 ipr_cmd->sibling->sibling = NULL;
4799 else
4800 ipr_cmd->sibling->done(ipr_cmd->sibling);
4801
4802 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4803 LEAVE;
4804}
4805
4806/**
4807 * ipr_abort_timeout - An abort task has timed out
4808 * @ipr_cmd: ipr command struct
4809 *
4810 * This function handles when an abort task times out. If this
4811 * happens we issue a bus reset since we have resources tied
4812 * up that must be freed before returning to the midlayer.
4813 *
4814 * Return value:
4815 * none
4816 **/
4817static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4818{
4819 struct ipr_cmnd *reset_cmd;
4820 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4821 struct ipr_cmd_pkt *cmd_pkt;
4822 unsigned long lock_flags = 0;
4823
4824 ENTER;
4825 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4826 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4827 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4828 return;
4829 }
4830
fb3ed3cb 4831 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
1da177e4
LT		 4832 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4833 ipr_cmd->sibling = reset_cmd;
4834 reset_cmd->sibling = ipr_cmd;
4835 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4836 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4837 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4838 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4839 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4840
4841 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4842 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4843 LEAVE;
4844}
4845
4846/**
4847 * ipr_cancel_op - Cancel specified op
4848 * @scsi_cmd: scsi command struct
4849 *
4850 * This function cancels specified op.
4851 *
4852 * Return value:
4853 * SUCCESS / FAILED
4854 **/
4855static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4856{
4857 struct ipr_cmnd *ipr_cmd;
4858 struct ipr_ioa_cfg *ioa_cfg;
4859 struct ipr_resource_entry *res;
4860 struct ipr_cmd_pkt *cmd_pkt;
4861 u32 ioasc;
4862 int op_found = 0;
4863
4864 ENTER;
4865 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4866 res = scsi_cmd->device->hostdata;
4867
8fa728a2
JG		 4868 /* If we are currently going through reset/reload, return failed.
4869 * This will force the mid-layer to call ipr_eh_host_reset,
4870 * which will then go to sleep and wait for the reset to complete
4871 */
4872 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4873 return FAILED;
04d9768f 4874 if (!res || !ipr_is_gscsi(res))
1da177e4
LT		 4875 return FAILED;
4876
4877 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4878 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4879 ipr_cmd->done = ipr_scsi_eh_done;
4880 op_found = 1;
4881 break;
4882 }
4883 }
4884
4885 if (!op_found)
4886 return SUCCESS;
4887
4888 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3e7ebdfa 4889 ipr_cmd->ioarcb.res_handle = res->res_handle;
1da177e4
LT		 4890 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4891 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4892 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4893 ipr_cmd->u.sdev = scsi_cmd->device;
4894
fb3ed3cb
BK		 4895 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4896 scsi_cmd->cmnd[0]);
1da177e4 4897 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
96d21f00 4898 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1da177e4
LT		 4899
4900 /*
4901 * If the abort task timed out and we sent a bus reset, we will get
4902 * one the following responses to the abort
4903 */
4904 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4905 ioasc = 0;
4906 ipr_trace;
4907 }
4908
4909 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
ee0a90fa
BK		 4910 if (!ipr_is_naca_model(res))
4911 res->needs_sync_complete = 1;
1da177e4
LT		 4912
4913 LEAVE;
4914 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4915}
4916
4917/**
4918 * ipr_eh_abort - Abort a single op
4919 * @scsi_cmd: scsi command struct
4920 *
4921 * Return value:
4922 * SUCCESS / FAILED
4923 **/
4924static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4925{
8fa728a2
JG		 4926 unsigned long flags;
4927 int rc;
1da177e4
LT		 4928
4929 ENTER;
1da177e4 4930
8fa728a2
JG		 4931 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4932 rc = ipr_cancel_op(scsi_cmd);
4933 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
1da177e4
LT		 4934
4935 LEAVE;
8fa728a2 4936 return rc;
1da177e4
LT		 4937}
4938
4939/**
4940 * ipr_handle_other_interrupt - Handle "other" interrupts
4941 * @ioa_cfg: ioa config struct
1da177e4
LT		 4942 *
4943 * Return value:
4944 * IRQ_NONE / IRQ_HANDLED
4945 **/
64ffdb76 4946static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg)
1da177e4
LT		 4947{
4948 irqreturn_t rc = IRQ_HANDLED;
64ffdb76
WB		 4949 volatile u32 int_reg, int_mask_reg;
4950
4951 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
4952 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32) & ~int_mask_reg;
4953
4954 /* If an interrupt on the adapter did not occur, ignore it.
4955 * Or in the case of SIS 64, check for a stage change interrupt.
4956 */
4957 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
4958 if (ioa_cfg->sis64) {
4959 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4960 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4961 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
4962
4963 /* clear stage change */
4964 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
4965 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4966 list_del(&ioa_cfg->reset_cmd->queue);
4967 del_timer(&ioa_cfg->reset_cmd->timer);
4968 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4969 return IRQ_HANDLED;
4970 }
4971 }
4972
4973 return IRQ_NONE;
4974 }
1da177e4
LT		 4975
4976 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4977 /* Mask the interrupt */
4978 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4979
4980 /* Clear the interrupt */
4981 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4982 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4983
4984 list_del(&ioa_cfg->reset_cmd->queue);
4985 del_timer(&ioa_cfg->reset_cmd->timer);
4986 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4987 } else {
4988 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4989 ioa_cfg->ioa_unit_checked = 1;
4990 else
4991 dev_err(&ioa_cfg->pdev->dev,
4992 "Permanent IOA failure. 0x%08X\n", int_reg);
4993
4994 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4995 ioa_cfg->sdt_state = GET_DUMP;
4996
4997 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4998 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4999 }
5000
5001 return rc;
5002}
5003
3feeb89d
WB		 5004/**
5005 * ipr_isr_eh - Interrupt service routine error handler
5006 * @ioa_cfg: ioa config struct
5007 * @msg: message to log
5008 *
5009 * Return value:
5010 * none
5011 **/
5012static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg)
5013{
5014 ioa_cfg->errors_logged++;
5015 dev_err(&ioa_cfg->pdev->dev, "%s\n", msg);
5016
5017 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5018 ioa_cfg->sdt_state = GET_DUMP;
5019
5020 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5021}
5022
1da177e4
LT		 5023/**
5024 * ipr_isr - Interrupt service routine
5025 * @irq: irq number
5026 * @devp: pointer to ioa config struct
1da177e4
LT		 5027 *
5028 * Return value:
5029 * IRQ_NONE / IRQ_HANDLED
5030 **/
7d12e780 5031static irqreturn_t ipr_isr(int irq, void *devp)
1da177e4
LT		 5032{
5033 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
5034 unsigned long lock_flags = 0;
64ffdb76 5035 volatile u32 int_reg;
1da177e4
LT		 5036 u32 ioasc;
5037 u16 cmd_index;
3feeb89d 5038 int num_hrrq = 0;
1da177e4
LT		 5039 struct ipr_cmnd *ipr_cmd;
5040 irqreturn_t rc = IRQ_NONE;
5041
5042 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5043
5044 /* If interrupts are disabled, ignore the interrupt */
5045 if (!ioa_cfg->allow_interrupts) {
5046 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5047 return IRQ_NONE;
5048 }
5049
1da177e4
LT		 5050 while (1) {
5051 ipr_cmd = NULL;
5052
5053 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5054 ioa_cfg->toggle_bit) {
5055
5056 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
5057 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5058
5059 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
3feeb89d 5060 ipr_isr_eh(ioa_cfg, "Invalid response handle from IOA");
1da177e4
LT		 5061 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5062 return IRQ_HANDLED;
5063 }
5064
5065 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5066
96d21f00 5067 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1da177e4
LT		 5068
5069 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5070
5071 list_del(&ipr_cmd->queue);
5072 del_timer(&ipr_cmd->timer);
5073 ipr_cmd->done(ipr_cmd);
5074
5075 rc = IRQ_HANDLED;
5076
5077 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
5078 ioa_cfg->hrrq_curr++;
5079 } else {
5080 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
5081 ioa_cfg->toggle_bit ^= 1u;
5082 }
5083 }
5084
5085 if (ipr_cmd != NULL) {
5086 /* Clear the PCI interrupt */
3feeb89d 5087 do {
214777ba 5088 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
64ffdb76 5089 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
3feeb89d
WB		 5090 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5091 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5092
5093 if (int_reg & IPR_PCII_HRRQ_UPDATED) {
5094 ipr_isr_eh(ioa_cfg, "Error clearing HRRQ");
5095 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5096 return IRQ_HANDLED;
5097 }
5098
1da177e4
LT		 5099 } else
5100 break;
5101 }
5102
5103 if (unlikely(rc == IRQ_NONE))
64ffdb76 5104 rc = ipr_handle_other_interrupt(ioa_cfg);
1da177e4
LT		 5105
5106 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5107 return rc;
5108}
5109
a32c055f
WB		 5110/**
5111 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5112 * @ioa_cfg: ioa config struct
5113 * @ipr_cmd: ipr command struct
5114 *
5115 * Return value:
5116 * 0 on success / -1 on failure
5117 **/
5118static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5119 struct ipr_cmnd *ipr_cmd)
5120{
5121 int i, nseg;
5122 struct scatterlist *sg;
5123 u32 length;
5124 u32 ioadl_flags = 0;
5125 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5126 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5127 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5128
5129 length = scsi_bufflen(scsi_cmd);
5130 if (!length)
5131 return 0;
5132
5133 nseg = scsi_dma_map(scsi_cmd);
5134 if (nseg < 0) {
5135 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5136 return -1;
5137 }
5138
5139 ipr_cmd->dma_use_sg = nseg;
5140
438b0331 5141 ioarcb->data_transfer_length = cpu_to_be32(length);
b8803b1c
WB		 5142 ioarcb->ioadl_len =
5143 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
438b0331 5144
a32c055f
WB		 5145 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5146 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5147 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5148 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5149 ioadl_flags = IPR_IOADL_FLAGS_READ;
5150
5151 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5152 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5153 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5154 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5155 }
5156
5157 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5158 return 0;
5159}
5160
1da177e4
LT		 5161/**
5162 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5163 * @ioa_cfg: ioa config struct
5164 * @ipr_cmd: ipr command struct
5165 *
5166 * Return value:
5167 * 0 on success / -1 on failure
5168 **/
5169static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5170 struct ipr_cmnd *ipr_cmd)
5171{
63015bc9
FT		 5172 int i, nseg;
5173 struct scatterlist *sg;
1da177e4
LT		 5174 u32 length;
5175 u32 ioadl_flags = 0;
5176 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5177 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
a32c055f 5178 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
1da177e4 5179
63015bc9
FT		 5180 length = scsi_bufflen(scsi_cmd);
5181 if (!length)
1da177e4
LT		 5182 return 0;
5183
63015bc9
FT		 5184 nseg = scsi_dma_map(scsi_cmd);
5185 if (nseg < 0) {
5186 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5187 return -1;
5188 }
51b1c7e1 5189
63015bc9
FT		 5190 ipr_cmd->dma_use_sg = nseg;
5191
5192 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5193 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5194 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
a32c055f
WB		 5195 ioarcb->data_transfer_length = cpu_to_be32(length);
5196 ioarcb->ioadl_len =
63015bc9
FT		 5197 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5198 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5199 ioadl_flags = IPR_IOADL_FLAGS_READ;
5200 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5201 ioarcb->read_ioadl_len =
5202 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5203 }
1da177e4 5204
a32c055f
WB		 5205 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5206 ioadl = ioarcb->u.add_data.u.ioadl;
5207 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5208 offsetof(struct ipr_ioarcb, u.add_data));
63015bc9
FT		 5209 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5210 }
1da177e4 5211
63015bc9
FT		 5212 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5213 ioadl[i].flags_and_data_len =
5214 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5215 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
1da177e4
LT		 5216 }
5217
63015bc9
FT		 5218 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5219 return 0;
1da177e4
LT		 5220}
5221
5222/**
5223 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
5224 * @scsi_cmd: scsi command struct
5225 *
5226 * Return value:
5227 * task attributes
5228 **/
5229static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
5230{
5231 u8 tag[2];
5232 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
5233
5234 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
5235 switch (tag[0]) {
5236 case MSG_SIMPLE_TAG:
5237 rc = IPR_FLAGS_LO_SIMPLE_TASK;
5238 break;
5239 case MSG_HEAD_TAG:
5240 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
5241 break;
5242 case MSG_ORDERED_TAG:
5243 rc = IPR_FLAGS_LO_ORDERED_TASK;
5244 break;
5245 };
5246 }
5247
5248 return rc;
5249}
5250
5251/**
5252 * ipr_erp_done - Process completion of ERP for a device
5253 * @ipr_cmd: ipr command struct
5254 *
5255 * This function copies the sense buffer into the scsi_cmd
5256 * struct and pushes the scsi_done function.
5257 *
5258 * Return value:
5259 * nothing
5260 **/
5261static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5262{
5263 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5264 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5265 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
96d21f00 5266 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1da177e4
LT		 5267
5268 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5269 scsi_cmd->result |= (DID_ERROR << 16);
fb3ed3cb
BK		 5270 scmd_printk(KERN_ERR, scsi_cmd,
5271 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
1da177e4
LT		 5272 } else {
5273 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5274 SCSI_SENSE_BUFFERSIZE);
5275 }
5276
5277 if (res) {
ee0a90fa
BK		 5278 if (!ipr_is_naca_model(res))
5279 res->needs_sync_complete = 1;
1da177e4
LT		 5280 res->in_erp = 0;
5281 }
63015bc9 5282 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 5283 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5284 scsi_cmd->scsi_done(scsi_cmd);
5285}
5286
5287/**
5288 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5289 * @ipr_cmd: ipr command struct
5290 *
5291 * Return value:
5292 * none
5293 **/
5294static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5295{
51b1c7e1 5296 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
96d21f00 5297 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
a32c055f 5298 dma_addr_t dma_addr = ipr_cmd->dma_addr;
1da177e4
LT		 5299
5300 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
a32c055f 5301 ioarcb->data_transfer_length = 0;
1da177e4 5302 ioarcb->read_data_transfer_length = 0;
a32c055f 5303 ioarcb->ioadl_len = 0;
1da177e4 5304 ioarcb->read_ioadl_len = 0;
96d21f00
WB		 5305 ioasa->hdr.ioasc = 0;
5306 ioasa->hdr.residual_data_len = 0;
a32c055f
WB		 5307
5308 if (ipr_cmd->ioa_cfg->sis64)
5309 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5310 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5311 else {
5312 ioarcb->write_ioadl_addr =
5313 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5314 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5315 }
1da177e4
LT		 5316}
5317
5318/**
5319 * ipr_erp_request_sense - Send request sense to a device
5320 * @ipr_cmd: ipr command struct
5321 *
5322 * This function sends a request sense to a device as a result
5323 * of a check condition.
5324 *
5325 * Return value:
5326 * nothing
5327 **/
5328static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5329{
5330 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
96d21f00 5331 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1da177e4
LT		 5332
5333 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5334 ipr_erp_done(ipr_cmd);
5335 return;
5336 }
5337
5338 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5339
5340 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5341 cmd_pkt->cdb[0] = REQUEST_SENSE;
5342 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5343 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5344 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5345 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5346
a32c055f
WB		 5347 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5348 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
1da177e4
LT		 5349
5350 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5351 IPR_REQUEST_SENSE_TIMEOUT * 2);
5352}
5353
5354/**
5355 * ipr_erp_cancel_all - Send cancel all to a device
5356 * @ipr_cmd: ipr command struct
5357 *
5358 * This function sends a cancel all to a device to clear the
5359 * queue. If we are running TCQ on the device, QERR is set to 1,
5360 * which means all outstanding ops have been dropped on the floor.
5361 * Cancel all will return them to us.
5362 *
5363 * Return value:
5364 * nothing
5365 **/
5366static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5367{
5368 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5369 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5370 struct ipr_cmd_pkt *cmd_pkt;
5371
5372 res->in_erp = 1;
5373
5374 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5375
5376 if (!scsi_get_tag_type(scsi_cmd->device)) {
5377 ipr_erp_request_sense(ipr_cmd);
5378 return;
5379 }
5380
5381 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5382 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5383 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5384
5385 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5386 IPR_CANCEL_ALL_TIMEOUT);
5387}
5388
5389/**
5390 * ipr_dump_ioasa - Dump contents of IOASA
5391 * @ioa_cfg: ioa config struct
5392 * @ipr_cmd: ipr command struct
fe964d0a 5393 * @res: resource entry struct
1da177e4
LT		 5394 *
5395 * This function is invoked by the interrupt handler when ops
5396 * fail. It will log the IOASA if appropriate. Only called
5397 * for GPDD ops.
5398 *
5399 * Return value:
5400 * none
5401 **/
5402static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
fe964d0a 5403 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
1da177e4
LT		 5404{
5405 int i;
5406 u16 data_len;
b0692dd4 5407 u32 ioasc, fd_ioasc;
96d21f00 5408 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
1da177e4
LT		 5409 __be32 *ioasa_data = (__be32 *)ioasa;
5410 int error_index;
5411
96d21f00
WB		 5412 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5413 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 5414
5415 if (0 == ioasc)
5416 return;
5417
5418 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
5419 return;
5420
b0692dd4
BK		 5421 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
5422 error_index = ipr_get_error(fd_ioasc);
5423 else
5424 error_index = ipr_get_error(ioasc);
1da177e4
LT		 5425
5426 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
5427 /* Don't log an error if the IOA already logged one */
96d21f00 5428 if (ioasa->hdr.ilid != 0)
1da177e4
LT		 5429 return;
5430
cc9bd5d4
BK		 5431 if (!ipr_is_gscsi(res))
5432 return;
5433
1da177e4
LT		 5434 if (ipr_error_table[error_index].log_ioasa == 0)
5435 return;
5436 }
5437
fe964d0a 5438 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
1da177e4 5439
96d21f00
WB		 5440 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
5441 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
5442 data_len = sizeof(struct ipr_ioasa64);
5443 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
1da177e4 5444 data_len = sizeof(struct ipr_ioasa);
1da177e4
LT		 5445
5446 ipr_err("IOASA Dump:\n");
5447
5448 for (i = 0; i < data_len / 4; i += 4) {
5449 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
5450 be32_to_cpu(ioasa_data[i]),
5451 be32_to_cpu(ioasa_data[i+1]),
5452 be32_to_cpu(ioasa_data[i+2]),
5453 be32_to_cpu(ioasa_data[i+3]));
5454 }
5455}
5456
5457/**
5458 * ipr_gen_sense - Generate SCSI sense data from an IOASA
5459 * @ioasa: IOASA
5460 * @sense_buf: sense data buffer
5461 *
5462 * Return value:
5463 * none
5464 **/
5465static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
5466{
5467 u32 failing_lba;
5468 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
5469 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
96d21f00
WB		 5470 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5471 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
1da177e4
LT		 5472
5473 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
5474
5475 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
5476 return;
5477
5478 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
5479
5480 if (ipr_is_vset_device(res) &&
5481 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
5482 ioasa->u.vset.failing_lba_hi != 0) {
5483 sense_buf[0] = 0x72;
5484 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
5485 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
5486 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
5487
5488 sense_buf[7] = 12;
5489 sense_buf[8] = 0;
5490 sense_buf[9] = 0x0A;
5491 sense_buf[10] = 0x80;
5492
5493 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
5494
5495 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
5496 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
5497 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
5498 sense_buf[15] = failing_lba & 0x000000ff;
5499
5500 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5501
5502 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
5503 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
5504 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
5505 sense_buf[19] = failing_lba & 0x000000ff;
5506 } else {
5507 sense_buf[0] = 0x70;
5508 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
5509 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
5510 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
5511
5512 /* Illegal request */
5513 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
96d21f00 5514 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
1da177e4
LT		 5515 sense_buf[7] = 10; /* additional length */
5516
5517 /* IOARCB was in error */
5518 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
5519 sense_buf[15] = 0xC0;
5520 else /* Parameter data was invalid */
5521 sense_buf[15] = 0x80;
5522
5523 sense_buf[16] =
5524 ((IPR_FIELD_POINTER_MASK &
96d21f00 5525 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
1da177e4
LT		 5526 sense_buf[17] =
5527 (IPR_FIELD_POINTER_MASK &
96d21f00 5528 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
1da177e4
LT		 5529 } else {
5530 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
5531 if (ipr_is_vset_device(res))
5532 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5533 else
5534 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
5535
5536 sense_buf[0] |= 0x80; /* Or in the Valid bit */
5537 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
5538 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
5539 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
5540 sense_buf[6] = failing_lba & 0x000000ff;
5541 }
5542
5543 sense_buf[7] = 6; /* additional length */
5544 }
5545 }
5546}
5547
ee0a90fa
BK		 5548/**
5549 * ipr_get_autosense - Copy autosense data to sense buffer
5550 * @ipr_cmd: ipr command struct
5551 *
5552 * This function copies the autosense buffer to the buffer
5553 * in the scsi_cmd, if there is autosense available.
5554 *
5555 * Return value:
5556 * 1 if autosense was available / 0 if not
5557 **/
5558static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
5559{
96d21f00
WB		 5560 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5561 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
ee0a90fa 5562
96d21f00 5563 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
ee0a90fa
BK		 5564 return 0;
5565
96d21f00
WB		 5566 if (ipr_cmd->ioa_cfg->sis64)
5567 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
5568 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
5569 SCSI_SENSE_BUFFERSIZE));
5570 else
5571 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
5572 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
5573 SCSI_SENSE_BUFFERSIZE));
ee0a90fa
BK		 5574 return 1;
5575}
5576
1da177e4
LT		 5577/**
5578 * ipr_erp_start - Process an error response for a SCSI op
5579 * @ioa_cfg: ioa config struct
5580 * @ipr_cmd: ipr command struct
5581 *
5582 * This function determines whether or not to initiate ERP
5583 * on the affected device.
5584 *
5585 * Return value:
5586 * nothing
5587 **/
5588static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
5589 struct ipr_cmnd *ipr_cmd)
5590{
5591 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5592 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
96d21f00 5593 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
8a048994 5594 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 5595
5596 if (!res) {
5597 ipr_scsi_eh_done(ipr_cmd);
5598 return;
5599 }
5600
8a048994 5601 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
1da177e4
LT		 5602 ipr_gen_sense(ipr_cmd);
5603
cc9bd5d4
BK		 5604 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5605
8a048994 5606 switch (masked_ioasc) {
1da177e4 5607 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
ee0a90fa
BK		 5608 if (ipr_is_naca_model(res))
5609 scsi_cmd->result |= (DID_ABORT << 16);
5610 else
5611 scsi_cmd->result |= (DID_IMM_RETRY << 16);
1da177e4
LT		 5612 break;
5613 case IPR_IOASC_IR_RESOURCE_HANDLE:
b0df54bb 5614 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
1da177e4
LT		 5615 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5616 break;
5617 case IPR_IOASC_HW_SEL_TIMEOUT:
5618 scsi_cmd->result |= (DID_NO_CONNECT << 16);
ee0a90fa
BK		 5619 if (!ipr_is_naca_model(res))
5620 res->needs_sync_complete = 1;
1da177e4
LT		 5621 break;
5622 case IPR_IOASC_SYNC_REQUIRED:
5623 if (!res->in_erp)
5624 res->needs_sync_complete = 1;
5625 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5626 break;
5627 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
b0df54bb 5628 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
1da177e4
LT		 5629 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
5630 break;
5631 case IPR_IOASC_BUS_WAS_RESET:
5632 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
5633 /*
5634 * Report the bus reset and ask for a retry. The device
5635 * will give CC/UA the next command.
5636 */
5637 if (!res->resetting_device)
5638 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
5639 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa
BK		 5640 if (!ipr_is_naca_model(res))
5641 res->needs_sync_complete = 1;
1da177e4
LT		 5642 break;
5643 case IPR_IOASC_HW_DEV_BUS_STATUS:
5644 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
5645 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
ee0a90fa
BK		 5646 if (!ipr_get_autosense(ipr_cmd)) {
5647 if (!ipr_is_naca_model(res)) {
5648 ipr_erp_cancel_all(ipr_cmd);
5649 return;
5650 }
5651 }
1da177e4 5652 }
ee0a90fa
BK		 5653 if (!ipr_is_naca_model(res))
5654 res->needs_sync_complete = 1;
1da177e4
LT		 5655 break;
5656 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
5657 break;
5658 default:
5b7304fb
BK		 5659 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5660 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa 5661 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
1da177e4
LT		 5662 res->needs_sync_complete = 1;
5663 break;
5664 }
5665
63015bc9 5666 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 5667 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5668 scsi_cmd->scsi_done(scsi_cmd);
5669}
5670
5671/**
5672 * ipr_scsi_done - mid-layer done function
5673 * @ipr_cmd: ipr command struct
5674 *
5675 * This function is invoked by the interrupt handler for
5676 * ops generated by the SCSI mid-layer
5677 *
5678 * Return value:
5679 * none
5680 **/
5681static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
5682{
5683 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5684 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
96d21f00 5685 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1da177e4 5686
96d21f00 5687 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
1da177e4
LT		 5688
5689 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
63015bc9 5690 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 5691 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5692 scsi_cmd->scsi_done(scsi_cmd);
5693 } else
5694 ipr_erp_start(ioa_cfg, ipr_cmd);
5695}
5696
1da177e4
LT		 5697/**
5698 * ipr_queuecommand - Queue a mid-layer request
5699 * @scsi_cmd: scsi command struct
5700 * @done: done function
5701 *
5702 * This function queues a request generated by the mid-layer.
5703 *
5704 * Return value:
5705 * 0 on success
5706 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
5707 * SCSI_MLQUEUE_HOST_BUSY if host is busy
5708 **/
5709static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
5710 void (*done) (struct scsi_cmnd *))
5711{
5712 struct ipr_ioa_cfg *ioa_cfg;
5713 struct ipr_resource_entry *res;
5714 struct ipr_ioarcb *ioarcb;
5715 struct ipr_cmnd *ipr_cmd;
5716 int rc = 0;
5717
5718 scsi_cmd->scsi_done = done;
5719 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5720 res = scsi_cmd->device->hostdata;
5721 scsi_cmd->result = (DID_OK << 16);
5722
5723 /*
5724 * We are currently blocking all devices due to a host reset
5725 * We have told the host to stop giving us new requests, but
5726 * ERP ops don't count. FIXME
5727 */
5728 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
5729 return SCSI_MLQUEUE_HOST_BUSY;
5730
5731 /*
5732 * FIXME - Create scsi_set_host_offline interface
5733 * and the ioa_is_dead check can be removed
5734 */
5735 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
5736 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
5737 scsi_cmd->result = (DID_NO_CONNECT << 16);
5738 scsi_cmd->scsi_done(scsi_cmd);
5739 return 0;
5740 }
5741
35a39691
BK		 5742 if (ipr_is_gata(res) && res->sata_port)
5743 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
5744
1da177e4
LT		 5745 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5746 ioarcb = &ipr_cmd->ioarcb;
5747 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5748
5749 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
5750 ipr_cmd->scsi_cmd = scsi_cmd;
3e7ebdfa 5751 ioarcb->res_handle = res->res_handle;
1da177e4 5752 ipr_cmd->done = ipr_scsi_done;
3e7ebdfa 5753 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
1da177e4
LT		 5754
5755 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
5756 if (scsi_cmd->underflow == 0)
5757 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5758
5759 if (res->needs_sync_complete) {
5760 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
5761 res->needs_sync_complete = 0;
5762 }
5763
5764 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5765 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
5766 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
5767 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
5768 }
5769
5770 if (scsi_cmd->cmnd[0] >= 0xC0 &&
5771 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
5772 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5773
a32c055f
WB		 5774 if (likely(rc == 0)) {
5775 if (ioa_cfg->sis64)
5776 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
5777 else
5778 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
5779 }
1da177e4
LT		 5780
5781 if (likely(rc == 0)) {
5782 mb();
a32c055f 5783 ipr_send_command(ipr_cmd);
1da177e4
LT		 5784 } else {
5785 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5786 return SCSI_MLQUEUE_HOST_BUSY;
5787 }
5788
5789 return 0;
5790}
5791
35a39691
BK		 5792/**
5793 * ipr_ioctl - IOCTL handler
5794 * @sdev: scsi device struct
5795 * @cmd: IOCTL cmd
5796 * @arg: IOCTL arg
5797 *
5798 * Return value:
5799 * 0 on success / other on failure
5800 **/
bd705f2d 5801static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
35a39691
BK		 5802{
5803 struct ipr_resource_entry *res;
5804
5805 res = (struct ipr_resource_entry *)sdev->hostdata;
0ce3a7e5
BK		 5806 if (res && ipr_is_gata(res)) {
5807 if (cmd == HDIO_GET_IDENTITY)
5808 return -ENOTTY;
94be9a58 5809 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
0ce3a7e5 5810 }
35a39691
BK		 5811
5812 return -EINVAL;
5813}
5814
1da177e4
LT		 5815/**
5816 * ipr_info - Get information about the card/driver
5817 * @scsi_host: scsi host struct
5818 *
5819 * Return value:
5820 * pointer to buffer with description string
5821 **/
5822static const char * ipr_ioa_info(struct Scsi_Host *host)
5823{
5824 static char buffer[512];
5825 struct ipr_ioa_cfg *ioa_cfg;
5826 unsigned long lock_flags = 0;
5827
5828 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
5829
5830 spin_lock_irqsave(host->host_lock, lock_flags);
5831 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
5832 spin_unlock_irqrestore(host->host_lock, lock_flags);
5833
5834 return buffer;
5835}
5836
5837static struct scsi_host_template driver_template = {
5838 .module = THIS_MODULE,
5839 .name = "IPR",
5840 .info = ipr_ioa_info,
35a39691 5841 .ioctl = ipr_ioctl,
1da177e4
LT		 5842 .queuecommand = ipr_queuecommand,
5843 .eh_abort_handler = ipr_eh_abort,
5844 .eh_device_reset_handler = ipr_eh_dev_reset,
5845 .eh_host_reset_handler = ipr_eh_host_reset,
5846 .slave_alloc = ipr_slave_alloc,
5847 .slave_configure = ipr_slave_configure,
5848 .slave_destroy = ipr_slave_destroy,
35a39691
BK		 5849 .target_alloc = ipr_target_alloc,
5850 .target_destroy = ipr_target_destroy,
1da177e4
LT		 5851 .change_queue_depth = ipr_change_queue_depth,
5852 .change_queue_type = ipr_change_queue_type,
5853 .bios_param = ipr_biosparam,
5854 .can_queue = IPR_MAX_COMMANDS,
5855 .this_id = -1,
5856 .sg_tablesize = IPR_MAX_SGLIST,
5857 .max_sectors = IPR_IOA_MAX_SECTORS,
5858 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
5859 .use_clustering = ENABLE_CLUSTERING,
5860 .shost_attrs = ipr_ioa_attrs,
5861 .sdev_attrs = ipr_dev_attrs,
5862 .proc_name = IPR_NAME
5863};
5864
35a39691
BK		 5865/**
5866 * ipr_ata_phy_reset - libata phy_reset handler
5867 * @ap: ata port to reset
5868 *
5869 **/
5870static void ipr_ata_phy_reset(struct ata_port *ap)
5871{
5872 unsigned long flags;
5873 struct ipr_sata_port *sata_port = ap->private_data;
5874 struct ipr_resource_entry *res = sata_port->res;
5875 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5876 int rc;
5877
5878 ENTER;
5879 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5880 while(ioa_cfg->in_reset_reload) {
5881 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5882 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5883 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5884 }
5885
5886 if (!ioa_cfg->allow_cmds)
5887 goto out_unlock;
5888
5889 rc = ipr_device_reset(ioa_cfg, res);
5890
5891 if (rc) {
3e4ec344 5892 ap->link.device[0].class = ATA_DEV_NONE;
35a39691
BK		 5893 goto out_unlock;
5894 }
5895
3e7ebdfa
WB		 5896 ap->link.device[0].class = res->ata_class;
5897 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
3e4ec344 5898 ap->link.device[0].class = ATA_DEV_NONE;
35a39691
BK		 5899
5900out_unlock:
5901 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5902 LEAVE;
5903}
5904
5905/**
5906 * ipr_ata_post_internal - Cleanup after an internal command
5907 * @qc: ATA queued command
5908 *
5909 * Return value:
5910 * none
5911 **/
5912static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5913{
5914 struct ipr_sata_port *sata_port = qc->ap->private_data;
5915 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5916 struct ipr_cmnd *ipr_cmd;
5917 unsigned long flags;
5918
5919 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
73d98ff0
BK		 5920 while(ioa_cfg->in_reset_reload) {
5921 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5922 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5923 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5924 }
5925
35a39691
BK		 5926 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5927 if (ipr_cmd->qc == qc) {
5928 ipr_device_reset(ioa_cfg, sata_port->res);
5929 break;
5930 }
5931 }
5932 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5933}
5934
35a39691
BK		 5935/**
5936 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5937 * @regs: destination
5938 * @tf: source ATA taskfile
5939 *
5940 * Return value:
5941 * none
5942 **/
5943static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5944 struct ata_taskfile *tf)
5945{
5946 regs->feature = tf->feature;
5947 regs->nsect = tf->nsect;
5948 regs->lbal = tf->lbal;
5949 regs->lbam = tf->lbam;
5950 regs->lbah = tf->lbah;
5951 regs->device = tf->device;
5952 regs->command = tf->command;
5953 regs->hob_feature = tf->hob_feature;
5954 regs->hob_nsect = tf->hob_nsect;
5955 regs->hob_lbal = tf->hob_lbal;
5956 regs->hob_lbam = tf->hob_lbam;
5957 regs->hob_lbah = tf->hob_lbah;
5958 regs->ctl = tf->ctl;
5959}
5960
5961/**
5962 * ipr_sata_done - done function for SATA commands
5963 * @ipr_cmd: ipr command struct
5964 *
5965 * This function is invoked by the interrupt handler for
5966 * ops generated by the SCSI mid-layer to SATA devices
5967 *
5968 * Return value:
5969 * none
5970 **/
5971static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5972{
5973 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5974 struct ata_queued_cmd *qc = ipr_cmd->qc;
5975 struct ipr_sata_port *sata_port = qc->ap->private_data;
5976 struct ipr_resource_entry *res = sata_port->res;
96d21f00 5977 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
35a39691 5978
96d21f00
WB		 5979 if (ipr_cmd->ioa_cfg->sis64)
5980 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
5981 sizeof(struct ipr_ioasa_gata));
5982 else
5983 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
5984 sizeof(struct ipr_ioasa_gata));
35a39691
BK		 5985 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5986
96d21f00 5987 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
3e7ebdfa 5988 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
35a39691
BK		 5989
5990 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
96d21f00 5991 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
35a39691 5992 else
96d21f00 5993 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
35a39691
BK		 5994 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5995 ata_qc_complete(qc);
5996}
5997
a32c055f
WB		 5998/**
5999 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6000 * @ipr_cmd: ipr command struct
6001 * @qc: ATA queued command
6002 *
6003 **/
6004static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6005 struct ata_queued_cmd *qc)
6006{
6007 u32 ioadl_flags = 0;
6008 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6009 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
6010 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6011 int len = qc->nbytes;
6012 struct scatterlist *sg;
6013 unsigned int si;
6014 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6015
6016 if (len == 0)
6017 return;
6018
6019 if (qc->dma_dir == DMA_TO_DEVICE) {
6020 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6021 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6022 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6023 ioadl_flags = IPR_IOADL_FLAGS_READ;
6024
6025 ioarcb->data_transfer_length = cpu_to_be32(len);
6026 ioarcb->ioadl_len =
6027 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6028 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6029 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl));
6030
6031 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6032 ioadl64->flags = cpu_to_be32(ioadl_flags);
6033 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6034 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6035
6036 last_ioadl64 = ioadl64;
6037 ioadl64++;
6038 }
6039
6040 if (likely(last_ioadl64))
6041 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6042}
6043
35a39691
BK		 6044/**
6045 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6046 * @ipr_cmd: ipr command struct
6047 * @qc: ATA queued command
6048 *
6049 **/
6050static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6051 struct ata_queued_cmd *qc)
6052{
6053 u32 ioadl_flags = 0;
6054 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
a32c055f 6055 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3be6cbd7 6056 struct ipr_ioadl_desc *last_ioadl = NULL;
dde20207 6057 int len = qc->nbytes;
35a39691 6058 struct scatterlist *sg;
ff2aeb1e 6059 unsigned int si;
35a39691
BK		 6060
6061 if (len == 0)
6062 return;
6063
6064 if (qc->dma_dir == DMA_TO_DEVICE) {
6065 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6066 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
a32c055f
WB		 6067 ioarcb->data_transfer_length = cpu_to_be32(len);
6068 ioarcb->ioadl_len =
35a39691
BK		 6069 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6070 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6071 ioadl_flags = IPR_IOADL_FLAGS_READ;
6072 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6073 ioarcb->read_ioadl_len =
6074 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6075 }
6076
ff2aeb1e 6077 for_each_sg(qc->sg, sg, qc->n_elem, si) {
35a39691
BK		 6078 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6079 ioadl->address = cpu_to_be32(sg_dma_address(sg));
3be6cbd7
JG		 6080
6081 last_ioadl = ioadl;
6082 ioadl++;
35a39691 6083 }
3be6cbd7
JG		 6084
6085 if (likely(last_ioadl))
6086 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
35a39691
BK		 6087}
6088
6089/**
6090 * ipr_qc_issue - Issue a SATA qc to a device
6091 * @qc: queued command
6092 *
6093 * Return value:
6094 * 0 if success
6095 **/
6096static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6097{
6098 struct ata_port *ap = qc->ap;
6099 struct ipr_sata_port *sata_port = ap->private_data;
6100 struct ipr_resource_entry *res = sata_port->res;
6101 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6102 struct ipr_cmnd *ipr_cmd;
6103 struct ipr_ioarcb *ioarcb;
6104 struct ipr_ioarcb_ata_regs *regs;
6105
6106 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
0feeed82 6107 return AC_ERR_SYSTEM;
35a39691
BK		 6108
6109 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6110 ioarcb = &ipr_cmd->ioarcb;
35a39691 6111
a32c055f
WB		 6112 if (ioa_cfg->sis64) {
6113 regs = &ipr_cmd->i.ata_ioadl.regs;
6114 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6115 } else
6116 regs = &ioarcb->u.add_data.u.regs;
6117
6118 memset(regs, 0, sizeof(*regs));
6119 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
35a39691
BK		 6120
6121 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6122 ipr_cmd->qc = qc;
6123 ipr_cmd->done = ipr_sata_done;
3e7ebdfa 6124 ipr_cmd->ioarcb.res_handle = res->res_handle;
35a39691
BK		 6125 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6126 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6127 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
dde20207 6128 ipr_cmd->dma_use_sg = qc->n_elem;
35a39691 6129
a32c055f
WB		 6130 if (ioa_cfg->sis64)
6131 ipr_build_ata_ioadl64(ipr_cmd, qc);
6132 else
6133 ipr_build_ata_ioadl(ipr_cmd, qc);
6134
35a39691
BK		 6135 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6136 ipr_copy_sata_tf(regs, &qc->tf);
6137 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
3e7ebdfa 6138 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
35a39691
BK		 6139
6140 switch (qc->tf.protocol) {
6141 case ATA_PROT_NODATA:
6142 case ATA_PROT_PIO:
6143 break;
6144
6145 case ATA_PROT_DMA:
6146 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6147 break;
6148
0dc36888
TH		 6149 case ATAPI_PROT_PIO:
6150 case ATAPI_PROT_NODATA:
35a39691
BK		 6151 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6152 break;
6153
0dc36888 6154 case ATAPI_PROT_DMA:
35a39691
BK		 6155 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6156 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6157 break;
6158
6159 default:
6160 WARN_ON(1);
0feeed82 6161 return AC_ERR_INVALID;
35a39691
BK		 6162 }
6163
6164 mb();
a32c055f
WB		 6165
6166 ipr_send_command(ipr_cmd);
6167
35a39691
BK		 6168 return 0;
6169}
6170
4c9bf4e7
TH		 6171/**
6172 * ipr_qc_fill_rtf - Read result TF
6173 * @qc: ATA queued command
6174 *
6175 * Return value:
6176 * true
6177 **/
6178static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6179{
6180 struct ipr_sata_port *sata_port = qc->ap->private_data;
6181 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6182 struct ata_taskfile *tf = &qc->result_tf;
6183
6184 tf->feature = g->error;
6185 tf->nsect = g->nsect;
6186 tf->lbal = g->lbal;
6187 tf->lbam = g->lbam;
6188 tf->lbah = g->lbah;
6189 tf->device = g->device;
6190 tf->command = g->status;
6191 tf->hob_nsect = g->hob_nsect;
6192 tf->hob_lbal = g->hob_lbal;
6193 tf->hob_lbam = g->hob_lbam;
6194 tf->hob_lbah = g->hob_lbah;
6195 tf->ctl = g->alt_status;
6196
6197 return true;
6198}
6199
35a39691 6200static struct ata_port_operations ipr_sata_ops = {
35a39691 6201 .phy_reset = ipr_ata_phy_reset,
a1efdaba 6202 .hardreset = ipr_sata_reset,
35a39691 6203 .post_internal_cmd = ipr_ata_post_internal,
35a39691
BK		 6204 .qc_prep = ata_noop_qc_prep,
6205 .qc_issue = ipr_qc_issue,
4c9bf4e7 6206 .qc_fill_rtf = ipr_qc_fill_rtf,
35a39691
BK		 6207 .port_start = ata_sas_port_start,
6208 .port_stop = ata_sas_port_stop
6209};
6210
6211static struct ata_port_info sata_port_info = {
6212 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
6213 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
6214 .pio_mask = 0x10, /* pio4 */
6215 .mwdma_mask = 0x07,
6216 .udma_mask = 0x7f, /* udma0-6 */
6217 .port_ops = &ipr_sata_ops
6218};
6219
1da177e4
LT		 6220#ifdef CONFIG_PPC_PSERIES
6221static const u16 ipr_blocked_processors[] = {
6222 PV_NORTHSTAR,
6223 PV_PULSAR,
6224 PV_POWER4,
6225 PV_ICESTAR,
6226 PV_SSTAR,
6227 PV_POWER4p,
6228 PV_630,
6229 PV_630p
6230};
6231
6232/**
6233 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6234 * @ioa_cfg: ioa cfg struct
6235 *
6236 * Adapters that use Gemstone revision < 3.1 do not work reliably on
6237 * certain pSeries hardware. This function determines if the given
6238 * adapter is in one of these confgurations or not.
6239 *
6240 * Return value:
6241 * 1 if adapter is not supported / 0 if adapter is supported
6242 **/
6243static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6244{
1da177e4
LT		 6245 int i;
6246
44c10138
AK		 6247 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6248 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
6249 if (__is_processor(ipr_blocked_processors[i]))
6250 return 1;
1da177e4
LT		 6251 }
6252 }
6253 return 0;
6254}
6255#else
6256#define ipr_invalid_adapter(ioa_cfg) 0
6257#endif
6258
6259/**
6260 * ipr_ioa_bringdown_done - IOA bring down completion.
6261 * @ipr_cmd: ipr command struct
6262 *
6263 * This function processes the completion of an adapter bring down.
6264 * It wakes any reset sleepers.
6265 *
6266 * Return value:
6267 * IPR_RC_JOB_RETURN
6268 **/
6269static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6270{
6271 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6272
6273 ENTER;
6274 ioa_cfg->in_reset_reload = 0;
6275 ioa_cfg->reset_retries = 0;
6276 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6277 wake_up_all(&ioa_cfg->reset_wait_q);
6278
6279 spin_unlock_irq(ioa_cfg->host->host_lock);
6280 scsi_unblock_requests(ioa_cfg->host);
6281 spin_lock_irq(ioa_cfg->host->host_lock);
6282 LEAVE;
6283
6284 return IPR_RC_JOB_RETURN;
6285}
6286
6287/**
6288 * ipr_ioa_reset_done - IOA reset completion.
6289 * @ipr_cmd: ipr command struct
6290 *
6291 * This function processes the completion of an adapter reset.
6292 * It schedules any necessary mid-layer add/removes and
6293 * wakes any reset sleepers.
6294 *
6295 * Return value:
6296 * IPR_RC_JOB_RETURN
6297 **/
6298static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
6299{
6300 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6301 struct ipr_resource_entry *res;
6302 struct ipr_hostrcb *hostrcb, *temp;
6303 int i = 0;
6304
6305 ENTER;
6306 ioa_cfg->in_reset_reload = 0;
6307 ioa_cfg->allow_cmds = 1;
6308 ioa_cfg->reset_cmd = NULL;
3d1d0da6 6309 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
1da177e4
LT		 6310
6311 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
6312 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
6313 ipr_trace;
6314 break;
6315 }
6316 }
6317 schedule_work(&ioa_cfg->work_q);
6318
6319 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
6320 list_del(&hostrcb->queue);
6321 if (i++ < IPR_NUM_LOG_HCAMS)
6322 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
6323 else
6324 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
6325 }
6326
6bb04170 6327 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
1da177e4
LT		 6328 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
6329
6330 ioa_cfg->reset_retries = 0;
6331 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6332 wake_up_all(&ioa_cfg->reset_wait_q);
6333
30237853 6334 spin_unlock(ioa_cfg->host->host_lock);
1da177e4 6335 scsi_unblock_requests(ioa_cfg->host);
30237853 6336 spin_lock(ioa_cfg->host->host_lock);
1da177e4
LT		 6337
6338 if (!ioa_cfg->allow_cmds)
6339 scsi_block_requests(ioa_cfg->host);
6340
6341 LEAVE;
6342 return IPR_RC_JOB_RETURN;
6343}
6344
6345/**
6346 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
6347 * @supported_dev: supported device struct
6348 * @vpids: vendor product id struct
6349 *
6350 * Return value:
6351 * none
6352 **/
6353static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
6354 struct ipr_std_inq_vpids *vpids)
6355{
6356 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
6357 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
6358 supported_dev->num_records = 1;
6359 supported_dev->data_length =
6360 cpu_to_be16(sizeof(struct ipr_supported_device));
6361 supported_dev->reserved = 0;
6362}
6363
6364/**
6365 * ipr_set_supported_devs - Send Set Supported Devices for a device
6366 * @ipr_cmd: ipr command struct
6367 *
a32c055f 6368 * This function sends a Set Supported Devices to the adapter
1da177e4
LT		 6369 *
6370 * Return value:
6371 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6372 **/
6373static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
6374{
6375 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6376 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
1da177e4
LT		 6377 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6378 struct ipr_resource_entry *res = ipr_cmd->u.res;
6379
6380 ipr_cmd->job_step = ipr_ioa_reset_done;
6381
6382 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
e4fbf44e 6383 if (!ipr_is_scsi_disk(res))
1da177e4
LT		 6384 continue;
6385
6386 ipr_cmd->u.res = res;
3e7ebdfa 6387 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
1da177e4
LT		 6388
6389 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6390 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6391 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6392
6393 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
3e7ebdfa 6394 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
1da177e4
LT		 6395 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
6396 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
6397
a32c055f
WB		 6398 ipr_init_ioadl(ipr_cmd,
6399 ioa_cfg->vpd_cbs_dma +
6400 offsetof(struct ipr_misc_cbs, supp_dev),
6401 sizeof(struct ipr_supported_device),
6402 IPR_IOADL_FLAGS_WRITE_LAST);
1da177e4
LT		 6403
6404 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6405 IPR_SET_SUP_DEVICE_TIMEOUT);
6406
3e7ebdfa
WB		 6407 if (!ioa_cfg->sis64)
6408 ipr_cmd->job_step = ipr_set_supported_devs;
1da177e4
LT		 6409 return IPR_RC_JOB_RETURN;
6410 }
6411
6412 return IPR_RC_JOB_CONTINUE;
6413}
6414
6415/**
6416 * ipr_get_mode_page - Locate specified mode page
6417 * @mode_pages: mode page buffer
6418 * @page_code: page code to find
6419 * @len: minimum required length for mode page
6420 *
6421 * Return value:
6422 * pointer to mode page / NULL on failure
6423 **/
6424static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
6425 u32 page_code, u32 len)
6426{
6427 struct ipr_mode_page_hdr *mode_hdr;
6428 u32 page_length;
6429 u32 length;
6430
6431 if (!mode_pages || (mode_pages->hdr.length == 0))
6432 return NULL;
6433
6434 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
6435 mode_hdr = (struct ipr_mode_page_hdr *)
6436 (mode_pages->data + mode_pages->hdr.block_desc_len);
6437
6438 while (length) {
6439 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
6440 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
6441 return mode_hdr;
6442 break;
6443 } else {
6444 page_length = (sizeof(struct ipr_mode_page_hdr) +
6445 mode_hdr->page_length);
6446 length -= page_length;
6447 mode_hdr = (struct ipr_mode_page_hdr *)
6448 ((unsigned long)mode_hdr + page_length);
6449 }
6450 }
6451 return NULL;
6452}
6453
6454/**
6455 * ipr_check_term_power - Check for term power errors
6456 * @ioa_cfg: ioa config struct
6457 * @mode_pages: IOAFP mode pages buffer
6458 *
6459 * Check the IOAFP's mode page 28 for term power errors
6460 *
6461 * Return value:
6462 * nothing
6463 **/
6464static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
6465 struct ipr_mode_pages *mode_pages)
6466{
6467 int i;
6468 int entry_length;
6469 struct ipr_dev_bus_entry *bus;
6470 struct ipr_mode_page28 *mode_page;
6471
6472 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6473 sizeof(struct ipr_mode_page28));
6474
6475 entry_length = mode_page->entry_length;
6476
6477 bus = mode_page->bus;
6478
6479 for (i = 0; i < mode_page->num_entries; i++) {
6480 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
6481 dev_err(&ioa_cfg->pdev->dev,
6482 "Term power is absent on scsi bus %d\n",
6483 bus->res_addr.bus);
6484 }
6485
6486 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
6487 }
6488}
6489
6490/**
6491 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
6492 * @ioa_cfg: ioa config struct
6493 *
6494 * Looks through the config table checking for SES devices. If
6495 * the SES device is in the SES table indicating a maximum SCSI
6496 * bus speed, the speed is limited for the bus.
6497 *
6498 * Return value:
6499 * none
6500 **/
6501static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
6502{
6503 u32 max_xfer_rate;
6504 int i;
6505
6506 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
6507 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
6508 ioa_cfg->bus_attr[i].bus_width);
6509
6510 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
6511 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
6512 }
6513}
6514
6515/**
6516 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
6517 * @ioa_cfg: ioa config struct
6518 * @mode_pages: mode page 28 buffer
6519 *
6520 * Updates mode page 28 based on driver configuration
6521 *
6522 * Return value:
6523 * none
6524 **/
6525static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
6526 struct ipr_mode_pages *mode_pages)
6527{
6528 int i, entry_length;
6529 struct ipr_dev_bus_entry *bus;
6530 struct ipr_bus_attributes *bus_attr;
6531 struct ipr_mode_page28 *mode_page;
6532
6533 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6534 sizeof(struct ipr_mode_page28));
6535
6536 entry_length = mode_page->entry_length;
6537
6538 /* Loop for each device bus entry */
6539 for (i = 0, bus = mode_page->bus;
6540 i < mode_page->num_entries;
6541 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
6542 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
6543 dev_err(&ioa_cfg->pdev->dev,
6544 "Invalid resource address reported: 0x%08X\n",
6545 IPR_GET_PHYS_LOC(bus->res_addr));
6546 continue;
6547 }
6548
6549 bus_attr = &ioa_cfg->bus_attr[i];
6550 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
6551 bus->bus_width = bus_attr->bus_width;
6552 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
6553 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
6554 if (bus_attr->qas_enabled)
6555 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
6556 else
6557 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
6558 }
6559}
6560
6561/**
6562 * ipr_build_mode_select - Build a mode select command
6563 * @ipr_cmd: ipr command struct
6564 * @res_handle: resource handle to send command to
6565 * @parm: Byte 2 of Mode Sense command
6566 * @dma_addr: DMA buffer address
6567 * @xfer_len: data transfer length
6568 *
6569 * Return value:
6570 * none
6571 **/
6572static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
a32c055f
WB		 6573 __be32 res_handle, u8 parm,
6574 dma_addr_t dma_addr, u8 xfer_len)
1da177e4 6575{
1da177e4
LT		 6576 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6577
6578 ioarcb->res_handle = res_handle;
6579 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6580 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6581 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
6582 ioarcb->cmd_pkt.cdb[1] = parm;
6583 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6584
a32c055f 6585 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
1da177e4
LT		 6586}
6587
6588/**
6589 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
6590 * @ipr_cmd: ipr command struct
6591 *
6592 * This function sets up the SCSI bus attributes and sends
6593 * a Mode Select for Page 28 to activate them.
6594 *
6595 * Return value:
6596 * IPR_RC_JOB_RETURN
6597 **/
6598static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
6599{
6600 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6601 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6602 int length;
6603
6604 ENTER;
4733804c
BK		 6605 ipr_scsi_bus_speed_limit(ioa_cfg);
6606 ipr_check_term_power(ioa_cfg, mode_pages);
6607 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
6608 length = mode_pages->hdr.length + 1;
6609 mode_pages->hdr.length = 0;
1da177e4
LT		 6610
6611 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6612 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6613 length);
6614
f72919ec
WB		 6615 ipr_cmd->job_step = ipr_set_supported_devs;
6616 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6617 struct ipr_resource_entry, queue);
1da177e4
LT		 6618 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6619
6620 LEAVE;
6621 return IPR_RC_JOB_RETURN;
6622}
6623
6624/**
6625 * ipr_build_mode_sense - Builds a mode sense command
6626 * @ipr_cmd: ipr command struct
6627 * @res: resource entry struct
6628 * @parm: Byte 2 of mode sense command
6629 * @dma_addr: DMA address of mode sense buffer
6630 * @xfer_len: Size of DMA buffer
6631 *
6632 * Return value:
6633 * none
6634 **/
6635static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
6636 __be32 res_handle,
a32c055f 6637 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
1da177e4 6638{
1da177e4
LT		 6639 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6640
6641 ioarcb->res_handle = res_handle;
6642 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
6643 ioarcb->cmd_pkt.cdb[2] = parm;
6644 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6645 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6646
a32c055f 6647 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
1da177e4
LT		 6648}
6649
dfed823e
BK		 6650/**
6651 * ipr_reset_cmd_failed - Handle failure of IOA reset command
6652 * @ipr_cmd: ipr command struct
6653 *
6654 * This function handles the failure of an IOA bringup command.
6655 *
6656 * Return value:
6657 * IPR_RC_JOB_RETURN
6658 **/
6659static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
6660{
6661 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
96d21f00 6662 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
dfed823e
BK		 6663
6664 dev_err(&ioa_cfg->pdev->dev,
6665 "0x%02X failed with IOASC: 0x%08X\n",
6666 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
6667
6668 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6669 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6670 return IPR_RC_JOB_RETURN;
6671}
6672
6673/**
6674 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
6675 * @ipr_cmd: ipr command struct
6676 *
6677 * This function handles the failure of a Mode Sense to the IOAFP.
6678 * Some adapters do not handle all mode pages.
6679 *
6680 * Return value:
6681 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6682 **/
6683static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
6684{
f72919ec 6685 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
96d21f00 6686 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
dfed823e
BK		 6687
6688 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
f72919ec
WB		 6689 ipr_cmd->job_step = ipr_set_supported_devs;
6690 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6691 struct ipr_resource_entry, queue);
dfed823e
BK		 6692 return IPR_RC_JOB_CONTINUE;
6693 }
6694
6695 return ipr_reset_cmd_failed(ipr_cmd);
6696}
6697
1da177e4
LT		 6698/**
6699 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
6700 * @ipr_cmd: ipr command struct
6701 *
6702 * This function send a Page 28 mode sense to the IOA to
6703 * retrieve SCSI bus attributes.
6704 *
6705 * Return value:
6706 * IPR_RC_JOB_RETURN
6707 **/
6708static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
6709{
6710 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6711
6712 ENTER;
6713 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6714 0x28, ioa_cfg->vpd_cbs_dma +
6715 offsetof(struct ipr_misc_cbs, mode_pages),
6716 sizeof(struct ipr_mode_pages));
6717
6718 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
dfed823e 6719 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
1da177e4
LT		 6720
6721 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6722
6723 LEAVE;
6724 return IPR_RC_JOB_RETURN;
6725}
6726
ac09c349
BK		 6727/**
6728 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
6729 * @ipr_cmd: ipr command struct
6730 *
6731 * This function enables dual IOA RAID support if possible.
6732 *
6733 * Return value:
6734 * IPR_RC_JOB_RETURN
6735 **/
6736static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
6737{
6738 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6739 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6740 struct ipr_mode_page24 *mode_page;
6741 int length;
6742
6743 ENTER;
6744 mode_page = ipr_get_mode_page(mode_pages, 0x24,
6745 sizeof(struct ipr_mode_page24));
6746
6747 if (mode_page)
6748 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
6749
6750 length = mode_pages->hdr.length + 1;
6751 mode_pages->hdr.length = 0;
6752
6753 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6754 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6755 length);
6756
6757 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6758 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6759
6760 LEAVE;
6761 return IPR_RC_JOB_RETURN;
6762}
6763
6764/**
6765 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
6766 * @ipr_cmd: ipr command struct
6767 *
6768 * This function handles the failure of a Mode Sense to the IOAFP.
6769 * Some adapters do not handle all mode pages.
6770 *
6771 * Return value:
6772 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6773 **/
6774static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
6775{
96d21f00 6776 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
ac09c349
BK		 6777
6778 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6779 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6780 return IPR_RC_JOB_CONTINUE;
6781 }
6782
6783 return ipr_reset_cmd_failed(ipr_cmd);
6784}
6785
6786/**
6787 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
6788 * @ipr_cmd: ipr command struct
6789 *
6790 * This function send a mode sense to the IOA to retrieve
6791 * the IOA Advanced Function Control mode page.
6792 *
6793 * Return value:
6794 * IPR_RC_JOB_RETURN
6795 **/
6796static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
6797{
6798 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6799
6800 ENTER;
6801 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6802 0x24, ioa_cfg->vpd_cbs_dma +
6803 offsetof(struct ipr_misc_cbs, mode_pages),
6804 sizeof(struct ipr_mode_pages));
6805
6806 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
6807 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
6808
6809 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6810
6811 LEAVE;
6812 return IPR_RC_JOB_RETURN;
6813}
6814
1da177e4
LT		 6815/**
6816 * ipr_init_res_table - Initialize the resource table
6817 * @ipr_cmd: ipr command struct
6818 *
6819 * This function looks through the existing resource table, comparing
6820 * it with the config table. This function will take care of old/new
6821 * devices and schedule adding/removing them from the mid-layer
6822 * as appropriate.
6823 *
6824 * Return value:
6825 * IPR_RC_JOB_CONTINUE
6826 **/
6827static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
6828{
6829 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6830 struct ipr_resource_entry *res, *temp;
3e7ebdfa
WB		 6831 struct ipr_config_table_entry_wrapper cfgtew;
6832 int entries, found, flag, i;
1da177e4
LT		 6833 LIST_HEAD(old_res);
6834
6835 ENTER;
3e7ebdfa
WB		 6836 if (ioa_cfg->sis64)
6837 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
6838 else
6839 flag = ioa_cfg->u.cfg_table->hdr.flags;
6840
6841 if (flag & IPR_UCODE_DOWNLOAD_REQ)
1da177e4
LT		 6842 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
6843
6844 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
6845 list_move_tail(&res->queue, &old_res);
6846
3e7ebdfa 6847 if (ioa_cfg->sis64)
438b0331 6848 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
3e7ebdfa
WB		 6849 else
6850 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
6851
6852 for (i = 0; i < entries; i++) {
6853 if (ioa_cfg->sis64)
6854 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
6855 else
6856 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
1da177e4
LT		 6857 found = 0;
6858
6859 list_for_each_entry_safe(res, temp, &old_res, queue) {
3e7ebdfa 6860 if (ipr_is_same_device(res, &cfgtew)) {
1da177e4
LT		 6861 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6862 found = 1;
6863 break;
6864 }
6865 }
6866
6867 if (!found) {
6868 if (list_empty(&ioa_cfg->free_res_q)) {
6869 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
6870 break;
6871 }
6872
6873 found = 1;
6874 res = list_entry(ioa_cfg->free_res_q.next,
6875 struct ipr_resource_entry, queue);
6876 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
3e7ebdfa 6877 ipr_init_res_entry(res, &cfgtew);
1da177e4 6878 res->add_to_ml = 1;
56115598
WB		 6879 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
6880 res->sdev->allow_restart = 1;
1da177e4
LT		 6881
6882 if (found)
3e7ebdfa 6883 ipr_update_res_entry(res, &cfgtew);
1da177e4
LT		 6884 }
6885
6886 list_for_each_entry_safe(res, temp, &old_res, queue) {
6887 if (res->sdev) {
6888 res->del_from_ml = 1;
3e7ebdfa 6889 res->res_handle = IPR_INVALID_RES_HANDLE;
1da177e4 6890 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
1da177e4
LT		 6891 }
6892 }
6893
3e7ebdfa
WB		 6894 list_for_each_entry_safe(res, temp, &old_res, queue) {
6895 ipr_clear_res_target(res);
6896 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
6897 }
6898
ac09c349
BK		 6899 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6900 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
6901 else
6902 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
1da177e4
LT		 6903
6904 LEAVE;
6905 return IPR_RC_JOB_CONTINUE;
6906}
6907
6908/**
6909 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
6910 * @ipr_cmd: ipr command struct
6911 *
6912 * This function sends a Query IOA Configuration command
6913 * to the adapter to retrieve the IOA configuration table.
6914 *
6915 * Return value:
6916 * IPR_RC_JOB_RETURN
6917 **/
6918static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6919{
6920 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6921 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
1da177e4 6922 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
ac09c349 6923 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
1da177e4
LT		 6924
6925 ENTER;
ac09c349
BK		 6926 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6927 ioa_cfg->dual_raid = 1;
1da177e4
LT		 6928 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6929 ucode_vpd->major_release, ucode_vpd->card_type,
6930 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6931 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6932 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6933
6934 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
438b0331 6935 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
3e7ebdfa
WB		 6936 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
6937 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
1da177e4 6938
3e7ebdfa 6939 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
a32c055f 6940 IPR_IOADL_FLAGS_READ_LAST);
1da177e4
LT		 6941
6942 ipr_cmd->job_step = ipr_init_res_table;
6943
6944 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6945
6946 LEAVE;
6947 return IPR_RC_JOB_RETURN;
6948}
6949
6950/**
6951 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6952 * @ipr_cmd: ipr command struct
6953 *
6954 * This utility function sends an inquiry to the adapter.
6955 *
6956 * Return value:
6957 * none
6958 **/
6959static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
a32c055f 6960 dma_addr_t dma_addr, u8 xfer_len)
1da177e4
LT		 6961{
6962 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
1da177e4
LT		 6963
6964 ENTER;
6965 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6966 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6967
6968 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6969 ioarcb->cmd_pkt.cdb[1] = flags;
6970 ioarcb->cmd_pkt.cdb[2] = page;
6971 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6972
a32c055f 6973 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
1da177e4
LT		 6974
6975 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6976 LEAVE;
6977}
6978
62275040
BK		 6979/**
6980 * ipr_inquiry_page_supported - Is the given inquiry page supported
6981 * @page0: inquiry page 0 buffer
6982 * @page: page code.
6983 *
6984 * This function determines if the specified inquiry page is supported.
6985 *
6986 * Return value:
6987 * 1 if page is supported / 0 if not
6988 **/
6989static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
6990{
6991 int i;
6992
6993 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
6994 if (page0->page[i] == page)
6995 return 1;
6996
6997 return 0;
6998}
6999
ac09c349
BK		 7000/**
7001 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7002 * @ipr_cmd: ipr command struct
7003 *
7004 * This function sends a Page 0xD0 inquiry to the adapter
7005 * to retrieve adapter capabilities.
7006 *
7007 * Return value:
7008 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7009 **/
7010static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7011{
7012 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7013 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7014 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7015
7016 ENTER;
7017 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7018 memset(cap, 0, sizeof(*cap));
7019
7020 if (ipr_inquiry_page_supported(page0, 0xD0)) {
7021 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7022 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7023 sizeof(struct ipr_inquiry_cap));
7024 return IPR_RC_JOB_RETURN;
7025 }
7026
7027 LEAVE;
7028 return IPR_RC_JOB_CONTINUE;
7029}
7030
1da177e4
LT		 7031/**
7032 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7033 * @ipr_cmd: ipr command struct
7034 *
7035 * This function sends a Page 3 inquiry to the adapter
7036 * to retrieve software VPD information.
7037 *
7038 * Return value:
7039 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7040 **/
7041static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
62275040
BK		 7042{
7043 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
62275040
BK		 7044
7045 ENTER;
7046
ac09c349 7047 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
62275040
BK		 7048
7049 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7050 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7051 sizeof(struct ipr_inquiry_page3));
7052
7053 LEAVE;
7054 return IPR_RC_JOB_RETURN;
7055}
7056
7057/**
7058 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7059 * @ipr_cmd: ipr command struct
7060 *
7061 * This function sends a Page 0 inquiry to the adapter
7062 * to retrieve supported inquiry pages.
7063 *
7064 * Return value:
7065 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7066 **/
7067static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
1da177e4
LT		 7068{
7069 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7070 char type[5];
7071
7072 ENTER;
7073
7074 /* Grab the type out of the VPD and store it away */
7075 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7076 type[4] = '\0';
7077 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7078
62275040 7079 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
1da177e4 7080
62275040
BK		 7081 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7082 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7083 sizeof(struct ipr_inquiry_page0));
1da177e4
LT		 7084
7085 LEAVE;
7086 return IPR_RC_JOB_RETURN;
7087}
7088
7089/**
7090 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7091 * @ipr_cmd: ipr command struct
7092 *
7093 * This function sends a standard inquiry to the adapter.
7094 *
7095 * Return value:
7096 * IPR_RC_JOB_RETURN
7097 **/
7098static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7099{
7100 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7101
7102 ENTER;
62275040 7103 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
1da177e4
LT		 7104
7105 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7106 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7107 sizeof(struct ipr_ioa_vpd));
7108
7109 LEAVE;
7110 return IPR_RC_JOB_RETURN;
7111}
7112
7113/**
214777ba 7114 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
1da177e4
LT		 7115 * @ipr_cmd: ipr command struct
7116 *
7117 * This function send an Identify Host Request Response Queue
7118 * command to establish the HRRQ with the adapter.
7119 *
7120 * Return value:
7121 * IPR_RC_JOB_RETURN
7122 **/
214777ba 7123static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
1da177e4
LT		 7124{
7125 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7126 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7127
7128 ENTER;
7129 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7130
7131 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7132 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7133
7134 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
214777ba
WB		 7135 if (ioa_cfg->sis64)
7136 ioarcb->cmd_pkt.cdb[1] = 0x1;
1da177e4 7137 ioarcb->cmd_pkt.cdb[2] =
214777ba 7138 ((u64) ioa_cfg->host_rrq_dma >> 24) & 0xff;
1da177e4 7139 ioarcb->cmd_pkt.cdb[3] =
214777ba 7140 ((u64) ioa_cfg->host_rrq_dma >> 16) & 0xff;
1da177e4 7141 ioarcb->cmd_pkt.cdb[4] =
214777ba 7142 ((u64) ioa_cfg->host_rrq_dma >> 8) & 0xff;
1da177e4 7143 ioarcb->cmd_pkt.cdb[5] =
214777ba 7144 ((u64) ioa_cfg->host_rrq_dma) & 0xff;
1da177e4
LT		 7145 ioarcb->cmd_pkt.cdb[7] =
7146 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
7147 ioarcb->cmd_pkt.cdb[8] =
7148 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
7149
214777ba
WB		 7150 if (ioa_cfg->sis64) {
7151 ioarcb->cmd_pkt.cdb[10] =
7152 ((u64) ioa_cfg->host_rrq_dma >> 56) & 0xff;
7153 ioarcb->cmd_pkt.cdb[11] =
7154 ((u64) ioa_cfg->host_rrq_dma >> 48) & 0xff;
7155 ioarcb->cmd_pkt.cdb[12] =
7156 ((u64) ioa_cfg->host_rrq_dma >> 40) & 0xff;
7157 ioarcb->cmd_pkt.cdb[13] =
7158 ((u64) ioa_cfg->host_rrq_dma >> 32) & 0xff;
7159 }
7160
1da177e4
LT		 7161 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7162
7163 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7164
7165 LEAVE;
7166 return IPR_RC_JOB_RETURN;
7167}
7168
7169/**
7170 * ipr_reset_timer_done - Adapter reset timer function
7171 * @ipr_cmd: ipr command struct
7172 *
7173 * Description: This function is used in adapter reset processing
7174 * for timing events. If the reset_cmd pointer in the IOA
7175 * config struct is not this adapter's we are doing nested
7176 * resets and fail_all_ops will take care of freeing the
7177 * command block.
7178 *
7179 * Return value:
7180 * none
7181 **/
7182static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
7183{
7184 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7185 unsigned long lock_flags = 0;
7186
7187 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7188
7189 if (ioa_cfg->reset_cmd == ipr_cmd) {
7190 list_del(&ipr_cmd->queue);
7191 ipr_cmd->done(ipr_cmd);
7192 }
7193
7194 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7195}
7196
7197/**
7198 * ipr_reset_start_timer - Start a timer for adapter reset job
7199 * @ipr_cmd: ipr command struct
7200 * @timeout: timeout value
7201 *
7202 * Description: This function is used in adapter reset processing
7203 * for timing events. If the reset_cmd pointer in the IOA
7204 * config struct is not this adapter's we are doing nested
7205 * resets and fail_all_ops will take care of freeing the
7206 * command block.
7207 *
7208 * Return value:
7209 * none
7210 **/
7211static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
7212 unsigned long timeout)
7213{
7214 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
7215 ipr_cmd->done = ipr_reset_ioa_job;
7216
7217 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7218 ipr_cmd->timer.expires = jiffies + timeout;
7219 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
7220 add_timer(&ipr_cmd->timer);
7221}
7222
7223/**
7224 * ipr_init_ioa_mem - Initialize ioa_cfg control block
7225 * @ioa_cfg: ioa cfg struct
7226 *
7227 * Return value:
7228 * nothing
7229 **/
7230static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
7231{
7232 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
7233
7234 /* Initialize Host RRQ pointers */
7235 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
7236 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
7237 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
7238 ioa_cfg->toggle_bit = 1;
7239
7240 /* Zero out config table */
3e7ebdfa 7241 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
1da177e4
LT		 7242}
7243
214777ba
WB		 7244/**
7245 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
7246 * @ipr_cmd: ipr command struct
7247 *
7248 * Return value:
7249 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7250 **/
7251static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
7252{
7253 unsigned long stage, stage_time;
7254 u32 feedback;
7255 volatile u32 int_reg;
7256 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7257 u64 maskval = 0;
7258
7259 feedback = readl(ioa_cfg->regs.init_feedback_reg);
7260 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
7261 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
7262
7263 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
7264
7265 /* sanity check the stage_time value */
438b0331
WB		 7266 if (stage_time == 0)
7267 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
7268 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
214777ba
WB		 7269 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
7270 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
7271 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
7272
7273 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
7274 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
7275 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7276 stage_time = ioa_cfg->transop_timeout;
7277 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7278 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
1df79ca4
WB		 7279 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7280 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7281 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7282 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7283 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
7284 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
7285 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7286 return IPR_RC_JOB_CONTINUE;
7287 }
214777ba
WB		 7288 }
7289
7290 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7291 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
7292 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7293 ipr_cmd->done = ipr_reset_ioa_job;
7294 add_timer(&ipr_cmd->timer);
7295 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
7296
7297 return IPR_RC_JOB_RETURN;
7298}
7299
1da177e4
LT		 7300/**
7301 * ipr_reset_enable_ioa - Enable the IOA following a reset.
7302 * @ipr_cmd: ipr command struct
7303 *
7304 * This function reinitializes some control blocks and
7305 * enables destructive diagnostics on the adapter.
7306 *
7307 * Return value:
7308 * IPR_RC_JOB_RETURN
7309 **/
7310static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
7311{
7312 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7313 volatile u32 int_reg;
7be96900 7314 volatile u64 maskval;
1da177e4
LT		 7315
7316 ENTER;
214777ba 7317 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
1da177e4
LT		 7318 ipr_init_ioa_mem(ioa_cfg);
7319
7320 ioa_cfg->allow_interrupts = 1;
8701f185
WB		 7321 if (ioa_cfg->sis64) {
7322 /* Set the adapter to the correct endian mode. */
7323 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7324 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7325 }
7326
7be96900 7327 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
1da177e4
LT		 7328
7329 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7330 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
214777ba 7331 ioa_cfg->regs.clr_interrupt_mask_reg32);
1da177e4
LT		 7332 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7333 return IPR_RC_JOB_CONTINUE;
7334 }
7335
7336 /* Enable destructive diagnostics on IOA */
214777ba
WB		 7337 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
7338
7be96900
WB		 7339 if (ioa_cfg->sis64) {
7340 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7341 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
7342 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
7343 } else
7344 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
1da177e4 7345
1da177e4
LT		 7346 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7347
7348 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
7349
214777ba
WB		 7350 if (ioa_cfg->sis64) {
7351 ipr_cmd->job_step = ipr_reset_next_stage;
7352 return IPR_RC_JOB_CONTINUE;
7353 }
7354
1da177e4 7355 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
5469cb5b 7356 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
1da177e4
LT		 7357 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7358 ipr_cmd->done = ipr_reset_ioa_job;
7359 add_timer(&ipr_cmd->timer);
7360 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
7361
7362 LEAVE;
7363 return IPR_RC_JOB_RETURN;
7364}
7365
7366/**
7367 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
7368 * @ipr_cmd: ipr command struct
7369 *
7370 * This function is invoked when an adapter dump has run out
7371 * of processing time.
7372 *
7373 * Return value:
7374 * IPR_RC_JOB_CONTINUE
7375 **/
7376static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
7377{
7378 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7379
7380 if (ioa_cfg->sdt_state == GET_DUMP)
7381 ioa_cfg->sdt_state = ABORT_DUMP;
7382
7383 ipr_cmd->job_step = ipr_reset_alert;
7384
7385 return IPR_RC_JOB_CONTINUE;
7386}
7387
7388/**
7389 * ipr_unit_check_no_data - Log a unit check/no data error log
7390 * @ioa_cfg: ioa config struct
7391 *
7392 * Logs an error indicating the adapter unit checked, but for some
7393 * reason, we were unable to fetch the unit check buffer.
7394 *
7395 * Return value:
7396 * nothing
7397 **/
7398static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
7399{
7400 ioa_cfg->errors_logged++;
7401 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
7402}
7403
7404/**
7405 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
7406 * @ioa_cfg: ioa config struct
7407 *
7408 * Fetches the unit check buffer from the adapter by clocking the data
7409 * through the mailbox register.
7410 *
7411 * Return value:
7412 * nothing
7413 **/
7414static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
7415{
7416 unsigned long mailbox;
7417 struct ipr_hostrcb *hostrcb;
7418 struct ipr_uc_sdt sdt;
7419 int rc, length;
65f56475 7420 u32 ioasc;
1da177e4
LT		 7421
7422 mailbox = readl(ioa_cfg->ioa_mailbox);
7423
dcbad00e 7424 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
1da177e4
LT		 7425 ipr_unit_check_no_data(ioa_cfg);
7426 return;
7427 }
7428
7429 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
7430 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
7431 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
7432
dcbad00e
WB		 7433 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
7434 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
7435 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
1da177e4
LT		 7436 ipr_unit_check_no_data(ioa_cfg);
7437 return;
7438 }
7439
7440 /* Find length of the first sdt entry (UC buffer) */
dcbad00e
WB		 7441 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
7442 length = be32_to_cpu(sdt.entry[0].end_token);
7443 else
7444 length = (be32_to_cpu(sdt.entry[0].end_token) -
7445 be32_to_cpu(sdt.entry[0].start_token)) &
7446 IPR_FMT2_MBX_ADDR_MASK;
1da177e4
LT		 7447
7448 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
7449 struct ipr_hostrcb, queue);
7450 list_del(&hostrcb->queue);
7451 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
7452
7453 rc = ipr_get_ldump_data_section(ioa_cfg,
dcbad00e 7454 be32_to_cpu(sdt.entry[0].start_token),
1da177e4
LT		 7455 (__be32 *)&hostrcb->hcam,
7456 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
7457
65f56475 7458 if (!rc) {
1da177e4 7459 ipr_handle_log_data(ioa_cfg, hostrcb);
4565e370 7460 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
65f56475
BK		 7461 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
7462 ioa_cfg->sdt_state == GET_DUMP)
7463 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7464 } else
1da177e4
LT		 7465 ipr_unit_check_no_data(ioa_cfg);
7466
7467 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
7468}
7469
7470/**
7471 * ipr_reset_restore_cfg_space - Restore PCI config space.
7472 * @ipr_cmd: ipr command struct
7473 *
7474 * Description: This function restores the saved PCI config space of
7475 * the adapter, fails all outstanding ops back to the callers, and
7476 * fetches the dump/unit check if applicable to this reset.
7477 *
7478 * Return value:
7479 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7480 **/
7481static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
7482{
7483 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8701f185 7484 volatile u32 int_reg;
1da177e4
LT		 7485 int rc;
7486
7487 ENTER;
99c965dd 7488 ioa_cfg->pdev->state_saved = true;
1da177e4
LT		 7489 rc = pci_restore_state(ioa_cfg->pdev);
7490
7491 if (rc != PCIBIOS_SUCCESSFUL) {
96d21f00 7492 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
1da177e4
LT		 7493 return IPR_RC_JOB_CONTINUE;
7494 }
7495
7496 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
96d21f00 7497 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
1da177e4
LT		 7498 return IPR_RC_JOB_CONTINUE;
7499 }
7500
7501 ipr_fail_all_ops(ioa_cfg);
7502
8701f185
WB		 7503 if (ioa_cfg->sis64) {
7504 /* Set the adapter to the correct endian mode. */
7505 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7506 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7507 }
7508
1da177e4
LT		 7509 if (ioa_cfg->ioa_unit_checked) {
7510 ioa_cfg->ioa_unit_checked = 0;
7511 ipr_get_unit_check_buffer(ioa_cfg);
7512 ipr_cmd->job_step = ipr_reset_alert;
7513 ipr_reset_start_timer(ipr_cmd, 0);
7514 return IPR_RC_JOB_RETURN;
7515 }
7516
7517 if (ioa_cfg->in_ioa_bringdown) {
7518 ipr_cmd->job_step = ipr_ioa_bringdown_done;
7519 } else {
7520 ipr_cmd->job_step = ipr_reset_enable_ioa;
7521
7522 if (GET_DUMP == ioa_cfg->sdt_state) {
7523 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
7524 ipr_cmd->job_step = ipr_reset_wait_for_dump;
7525 schedule_work(&ioa_cfg->work_q);
7526 return IPR_RC_JOB_RETURN;
7527 }
7528 }
7529
438b0331 7530 LEAVE;
1da177e4
LT		 7531 return IPR_RC_JOB_CONTINUE;
7532}
7533
e619e1a7
BK		 7534/**
7535 * ipr_reset_bist_done - BIST has completed on the adapter.
7536 * @ipr_cmd: ipr command struct
7537 *
7538 * Description: Unblock config space and resume the reset process.
7539 *
7540 * Return value:
7541 * IPR_RC_JOB_CONTINUE
7542 **/
7543static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
7544{
7545 ENTER;
7546 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
7547 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
7548 LEAVE;
7549 return IPR_RC_JOB_CONTINUE;
7550}
7551
1da177e4
LT		 7552/**
7553 * ipr_reset_start_bist - Run BIST on the adapter.
7554 * @ipr_cmd: ipr command struct
7555 *
7556 * Description: This function runs BIST on the adapter, then delays 2 seconds.
7557 *
7558 * Return value:
7559 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7560 **/
7561static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
7562{
7563 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
cb237ef7 7564 int rc = PCIBIOS_SUCCESSFUL;
1da177e4
LT		 7565
7566 ENTER;
b30197d2 7567 pci_block_user_cfg_access(ioa_cfg->pdev);
1da177e4 7568
cb237ef7
WB		 7569 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
7570 writel(IPR_UPROCI_SIS64_START_BIST,
7571 ioa_cfg->regs.set_uproc_interrupt_reg32);
7572 else
7573 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
7574
7575 if (rc == PCIBIOS_SUCCESSFUL) {
e619e1a7 7576 ipr_cmd->job_step = ipr_reset_bist_done;
1da177e4
LT		 7577 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7578 rc = IPR_RC_JOB_RETURN;
cb237ef7
WB		 7579 } else {
7580 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
7581 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7582 rc = IPR_RC_JOB_CONTINUE;
1da177e4
LT		 7583 }
7584
7585 LEAVE;
7586 return rc;
7587}
7588
463fc696
BK		 7589/**
7590 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
7591 * @ipr_cmd: ipr command struct
7592 *
7593 * Description: This clears PCI reset to the adapter and delays two seconds.
7594 *
7595 * Return value:
7596 * IPR_RC_JOB_RETURN
7597 **/
7598static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
7599{
7600 ENTER;
7601 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
7602 ipr_cmd->job_step = ipr_reset_bist_done;
7603 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7604 LEAVE;
7605 return IPR_RC_JOB_RETURN;
7606}
7607
7608/**
7609 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
7610 * @ipr_cmd: ipr command struct
7611 *
7612 * Description: This asserts PCI reset to the adapter.
7613 *
7614 * Return value:
7615 * IPR_RC_JOB_RETURN
7616 **/
7617static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
7618{
7619 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7620 struct pci_dev *pdev = ioa_cfg->pdev;
7621
7622 ENTER;
7623 pci_block_user_cfg_access(pdev);
7624 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
7625 ipr_cmd->job_step = ipr_reset_slot_reset_done;
7626 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
7627 LEAVE;
7628 return IPR_RC_JOB_RETURN;
7629}
7630
1da177e4
LT		 7631/**
7632 * ipr_reset_allowed - Query whether or not IOA can be reset
7633 * @ioa_cfg: ioa config struct
7634 *
7635 * Return value:
7636 * 0 if reset not allowed / non-zero if reset is allowed
7637 **/
7638static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
7639{
7640 volatile u32 temp_reg;
7641
7642 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
7643 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
7644}
7645
7646/**
7647 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
7648 * @ipr_cmd: ipr command struct
7649 *
7650 * Description: This function waits for adapter permission to run BIST,
7651 * then runs BIST. If the adapter does not give permission after a
7652 * reasonable time, we will reset the adapter anyway. The impact of
7653 * resetting the adapter without warning the adapter is the risk of
7654 * losing the persistent error log on the adapter. If the adapter is
7655 * reset while it is writing to the flash on the adapter, the flash
7656 * segment will have bad ECC and be zeroed.
7657 *
7658 * Return value:
7659 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7660 **/
7661static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
7662{
7663 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7664 int rc = IPR_RC_JOB_RETURN;
7665
7666 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
7667 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
7668 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7669 } else {
463fc696 7670 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 7671 rc = IPR_RC_JOB_CONTINUE;
7672 }
7673
7674 return rc;
7675}
7676
7677/**
8701f185 7678 * ipr_reset_alert - Alert the adapter of a pending reset
1da177e4
LT		 7679 * @ipr_cmd: ipr command struct
7680 *
7681 * Description: This function alerts the adapter that it will be reset.
7682 * If memory space is not currently enabled, proceed directly
7683 * to running BIST on the adapter. The timer must always be started
7684 * so we guarantee we do not run BIST from ipr_isr.
7685 *
7686 * Return value:
7687 * IPR_RC_JOB_RETURN
7688 **/
7689static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
7690{
7691 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7692 u16 cmd_reg;
7693 int rc;
7694
7695 ENTER;
7696 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
7697
7698 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
7699 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
214777ba 7700 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
1da177e4
LT		 7701 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
7702 } else {
463fc696 7703 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 7704 }
7705
7706 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
7707 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7708
7709 LEAVE;
7710 return IPR_RC_JOB_RETURN;
7711}
7712
7713/**
7714 * ipr_reset_ucode_download_done - Microcode download completion
7715 * @ipr_cmd: ipr command struct
7716 *
7717 * Description: This function unmaps the microcode download buffer.
7718 *
7719 * Return value:
7720 * IPR_RC_JOB_CONTINUE
7721 **/
7722static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
7723{
7724 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7725 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7726
7727 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
7728 sglist->num_sg, DMA_TO_DEVICE);
7729
7730 ipr_cmd->job_step = ipr_reset_alert;
7731 return IPR_RC_JOB_CONTINUE;
7732}
7733
7734/**
7735 * ipr_reset_ucode_download - Download microcode to the adapter
7736 * @ipr_cmd: ipr command struct
7737 *
7738 * Description: This function checks to see if it there is microcode
7739 * to download to the adapter. If there is, a download is performed.
7740 *
7741 * Return value:
7742 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7743 **/
7744static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
7745{
7746 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7747 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7748
7749 ENTER;
7750 ipr_cmd->job_step = ipr_reset_alert;
7751
7752 if (!sglist)
7753 return IPR_RC_JOB_CONTINUE;
7754
7755 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7756 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7757 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
7758 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
7759 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
7760 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
7761 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
7762
a32c055f
WB		 7763 if (ioa_cfg->sis64)
7764 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
7765 else
7766 ipr_build_ucode_ioadl(ipr_cmd, sglist);
1da177e4
LT		 7767 ipr_cmd->job_step = ipr_reset_ucode_download_done;
7768
7769 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7770 IPR_WRITE_BUFFER_TIMEOUT);
7771
7772 LEAVE;
7773 return IPR_RC_JOB_RETURN;
7774}
7775
7776/**
7777 * ipr_reset_shutdown_ioa - Shutdown the adapter
7778 * @ipr_cmd: ipr command struct
7779 *
7780 * Description: This function issues an adapter shutdown of the
7781 * specified type to the specified adapter as part of the
7782 * adapter reset job.
7783 *
7784 * Return value:
7785 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7786 **/
7787static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
7788{
7789 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7790 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
7791 unsigned long timeout;
7792 int rc = IPR_RC_JOB_CONTINUE;
7793
7794 ENTER;
7795 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
7796 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7797 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7798 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
7799 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
7800
ac09c349
BK		 7801 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
7802 timeout = IPR_SHUTDOWN_TIMEOUT;
1da177e4
LT		 7803 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
7804 timeout = IPR_INTERNAL_TIMEOUT;
ac09c349
BK		 7805 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7806 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
1da177e4 7807 else
ac09c349 7808 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
1da177e4
LT		 7809
7810 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
7811
7812 rc = IPR_RC_JOB_RETURN;
7813 ipr_cmd->job_step = ipr_reset_ucode_download;
7814 } else
7815 ipr_cmd->job_step = ipr_reset_alert;
7816
7817 LEAVE;
7818 return rc;
7819}
7820
7821/**
7822 * ipr_reset_ioa_job - Adapter reset job
7823 * @ipr_cmd: ipr command struct
7824 *
7825 * Description: This function is the job router for the adapter reset job.
7826 *
7827 * Return value:
7828 * none
7829 **/
7830static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
7831{
7832 u32 rc, ioasc;
1da177e4
LT		 7833 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7834
7835 do {
96d21f00 7836 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1da177e4
LT		 7837
7838 if (ioa_cfg->reset_cmd != ipr_cmd) {
7839 /*
7840 * We are doing nested adapter resets and this is
7841 * not the current reset job.
7842 */
7843 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7844 return;
7845 }
7846
7847 if (IPR_IOASC_SENSE_KEY(ioasc)) {
dfed823e
BK		 7848 rc = ipr_cmd->job_step_failed(ipr_cmd);
7849 if (rc == IPR_RC_JOB_RETURN)
7850 return;
1da177e4
LT		 7851 }
7852
7853 ipr_reinit_ipr_cmnd(ipr_cmd);
dfed823e 7854 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
1da177e4
LT		 7855 rc = ipr_cmd->job_step(ipr_cmd);
7856 } while(rc == IPR_RC_JOB_CONTINUE);
7857}
7858
7859/**
7860 * _ipr_initiate_ioa_reset - Initiate an adapter reset
7861 * @ioa_cfg: ioa config struct
7862 * @job_step: first job step of reset job
7863 * @shutdown_type: shutdown type
7864 *
7865 * Description: This function will initiate the reset of the given adapter
7866 * starting at the selected job step.
7867 * If the caller needs to wait on the completion of the reset,
7868 * the caller must sleep on the reset_wait_q.
7869 *
7870 * Return value:
7871 * none
7872 **/
7873static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
7874 int (*job_step) (struct ipr_cmnd *),
7875 enum ipr_shutdown_type shutdown_type)
7876{
7877 struct ipr_cmnd *ipr_cmd;
7878
7879 ioa_cfg->in_reset_reload = 1;
7880 ioa_cfg->allow_cmds = 0;
7881 scsi_block_requests(ioa_cfg->host);
7882
7883 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
7884 ioa_cfg->reset_cmd = ipr_cmd;
7885 ipr_cmd->job_step = job_step;
7886 ipr_cmd->u.shutdown_type = shutdown_type;
7887
7888 ipr_reset_ioa_job(ipr_cmd);
7889}
7890
7891/**
7892 * ipr_initiate_ioa_reset - Initiate an adapter reset
7893 * @ioa_cfg: ioa config struct
7894 * @shutdown_type: shutdown type
7895 *
7896 * Description: This function will initiate the reset of the given adapter.
7897 * If the caller needs to wait on the completion of the reset,
7898 * the caller must sleep on the reset_wait_q.
7899 *
7900 * Return value:
7901 * none
7902 **/
7903static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
7904 enum ipr_shutdown_type shutdown_type)
7905{
7906 if (ioa_cfg->ioa_is_dead)
7907 return;
7908
7909 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
7910 ioa_cfg->sdt_state = ABORT_DUMP;
7911
7912 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
7913 dev_err(&ioa_cfg->pdev->dev,
7914 "IOA taken offline - error recovery failed\n");
7915
7916 ioa_cfg->reset_retries = 0;
7917 ioa_cfg->ioa_is_dead = 1;
7918
7919 if (ioa_cfg->in_ioa_bringdown) {
7920 ioa_cfg->reset_cmd = NULL;
7921 ioa_cfg->in_reset_reload = 0;
7922 ipr_fail_all_ops(ioa_cfg);
7923 wake_up_all(&ioa_cfg->reset_wait_q);
7924
7925 spin_unlock_irq(ioa_cfg->host->host_lock);
7926 scsi_unblock_requests(ioa_cfg->host);
7927 spin_lock_irq(ioa_cfg->host->host_lock);
7928 return;
7929 } else {
7930 ioa_cfg->in_ioa_bringdown = 1;
7931 shutdown_type = IPR_SHUTDOWN_NONE;
7932 }
7933 }
7934
7935 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
7936 shutdown_type);
7937}
7938
f8a88b19
LV		 7939/**
7940 * ipr_reset_freeze - Hold off all I/O activity
7941 * @ipr_cmd: ipr command struct
7942 *
7943 * Description: If the PCI slot is frozen, hold off all I/O
7944 * activity; then, as soon as the slot is available again,
7945 * initiate an adapter reset.
7946 */
7947static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
7948{
7949 /* Disallow new interrupts, avoid loop */
7950 ipr_cmd->ioa_cfg->allow_interrupts = 0;
7951 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
7952 ipr_cmd->done = ipr_reset_ioa_job;
7953 return IPR_RC_JOB_RETURN;
7954}
7955
7956/**
7957 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
7958 * @pdev: PCI device struct
7959 *
7960 * Description: This routine is called to tell us that the PCI bus
7961 * is down. Can't do anything here, except put the device driver
7962 * into a holding pattern, waiting for the PCI bus to come back.
7963 */
7964static void ipr_pci_frozen(struct pci_dev *pdev)
7965{
7966 unsigned long flags = 0;
7967 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7968
7969 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7970 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
7971 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7972}
7973
7974/**
7975 * ipr_pci_slot_reset - Called when PCI slot has been reset.
7976 * @pdev: PCI device struct
7977 *
7978 * Description: This routine is called by the pci error recovery
7979 * code after the PCI slot has been reset, just before we
7980 * should resume normal operations.
7981 */
7982static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
7983{
7984 unsigned long flags = 0;
7985 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7986
7987 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
463fc696
BK		 7988 if (ioa_cfg->needs_warm_reset)
7989 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7990 else
7991 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
7992 IPR_SHUTDOWN_NONE);
f8a88b19
LV		 7993 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7994 return PCI_ERS_RESULT_RECOVERED;
7995}
7996
7997/**
7998 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
7999 * @pdev: PCI device struct
8000 *
8001 * Description: This routine is called when the PCI bus has
8002 * permanently failed.
8003 */
8004static void ipr_pci_perm_failure(struct pci_dev *pdev)
8005{
8006 unsigned long flags = 0;
8007 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8008
8009 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8010 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8011 ioa_cfg->sdt_state = ABORT_DUMP;
8012 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
8013 ioa_cfg->in_ioa_bringdown = 1;
6ff63896 8014 ioa_cfg->allow_cmds = 0;
f8a88b19
LV		 8015 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8016 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8017}
8018
8019/**
8020 * ipr_pci_error_detected - Called when a PCI error is detected.
8021 * @pdev: PCI device struct
8022 * @state: PCI channel state
8023 *
8024 * Description: Called when a PCI error is detected.
8025 *
8026 * Return value:
8027 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
8028 */
8029static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
8030 pci_channel_state_t state)
8031{
8032 switch (state) {
8033 case pci_channel_io_frozen:
8034 ipr_pci_frozen(pdev);
8035 return PCI_ERS_RESULT_NEED_RESET;
8036 case pci_channel_io_perm_failure:
8037 ipr_pci_perm_failure(pdev);
8038 return PCI_ERS_RESULT_DISCONNECT;
8039 break;
8040 default:
8041 break;
8042 }
8043 return PCI_ERS_RESULT_NEED_RESET;
8044}
8045
1da177e4
LT		 8046/**
8047 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
8048 * @ioa_cfg: ioa cfg struct
8049 *
8050 * Description: This is the second phase of adapter intialization
8051 * This function takes care of initilizing the adapter to the point
8052 * where it can accept new commands.
8053
8054 * Return value:
b1c11812 8055 * 0 on success / -EIO on failure
1da177e4
LT		 8056 **/
8057static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
8058{
8059 int rc = 0;
8060 unsigned long host_lock_flags = 0;
8061
8062 ENTER;
8063 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8064 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
ce155cce
BK		 8065 if (ioa_cfg->needs_hard_reset) {
8066 ioa_cfg->needs_hard_reset = 0;
8067 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8068 } else
8069 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
8070 IPR_SHUTDOWN_NONE);
1da177e4
LT		 8071
8072 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8073 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8074 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8075
8076 if (ioa_cfg->ioa_is_dead) {
8077 rc = -EIO;
8078 } else if (ipr_invalid_adapter(ioa_cfg)) {
8079 if (!ipr_testmode)
8080 rc = -EIO;
8081
8082 dev_err(&ioa_cfg->pdev->dev,
8083 "Adapter not supported in this hardware configuration.\n");
8084 }
8085
8086 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8087
8088 LEAVE;
8089 return rc;
8090}
8091
8092/**
8093 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
8094 * @ioa_cfg: ioa config struct
8095 *
8096 * Return value:
8097 * none
8098 **/
8099static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8100{
8101 int i;
8102
8103 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8104 if (ioa_cfg->ipr_cmnd_list[i])
8105 pci_pool_free(ioa_cfg->ipr_cmd_pool,
8106 ioa_cfg->ipr_cmnd_list[i],
8107 ioa_cfg->ipr_cmnd_list_dma[i]);
8108
8109 ioa_cfg->ipr_cmnd_list[i] = NULL;
8110 }
8111
8112 if (ioa_cfg->ipr_cmd_pool)
8113 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
8114
8115 ioa_cfg->ipr_cmd_pool = NULL;
8116}
8117
8118/**
8119 * ipr_free_mem - Frees memory allocated for an adapter
8120 * @ioa_cfg: ioa cfg struct
8121 *
8122 * Return value:
8123 * nothing
8124 **/
8125static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
8126{
8127 int i;
8128
8129 kfree(ioa_cfg->res_entries);
8130 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
8131 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8132 ipr_free_cmd_blks(ioa_cfg);
8133 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
8134 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
3e7ebdfa
WB		 8135 pci_free_consistent(ioa_cfg->pdev, ioa_cfg->cfg_table_size,
8136 ioa_cfg->u.cfg_table,
1da177e4
LT		 8137 ioa_cfg->cfg_table_dma);
8138
8139 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8140 pci_free_consistent(ioa_cfg->pdev,
8141 sizeof(struct ipr_hostrcb),
8142 ioa_cfg->hostrcb[i],
8143 ioa_cfg->hostrcb_dma[i]);
8144 }
8145
8146 ipr_free_dump(ioa_cfg);
1da177e4
LT		 8147 kfree(ioa_cfg->trace);
8148}
8149
8150/**
8151 * ipr_free_all_resources - Free all allocated resources for an adapter.
8152 * @ipr_cmd: ipr command struct
8153 *
8154 * This function frees all allocated resources for the
8155 * specified adapter.
8156 *
8157 * Return value:
8158 * none
8159 **/
8160static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
8161{
8162 struct pci_dev *pdev = ioa_cfg->pdev;
8163
8164 ENTER;
8165 free_irq(pdev->irq, ioa_cfg);
5a9ef25b 8166 pci_disable_msi(pdev);
1da177e4
LT		 8167 iounmap(ioa_cfg->hdw_dma_regs);
8168 pci_release_regions(pdev);
8169 ipr_free_mem(ioa_cfg);
8170 scsi_host_put(ioa_cfg->host);
8171 pci_disable_device(pdev);
8172 LEAVE;
8173}
8174
8175/**
8176 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
8177 * @ioa_cfg: ioa config struct
8178 *
8179 * Return value:
8180 * 0 on success / -ENOMEM on allocation failure
8181 **/
8182static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8183{
8184 struct ipr_cmnd *ipr_cmd;
8185 struct ipr_ioarcb *ioarcb;
8186 dma_addr_t dma_addr;
8187 int i;
8188
8189 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
a32c055f 8190 sizeof(struct ipr_cmnd), 16, 0);
1da177e4
LT		 8191
8192 if (!ioa_cfg->ipr_cmd_pool)
8193 return -ENOMEM;
8194
8195 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
e94b1766 8196 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
1da177e4
LT		 8197
8198 if (!ipr_cmd) {
8199 ipr_free_cmd_blks(ioa_cfg);
8200 return -ENOMEM;
8201 }
8202
8203 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
8204 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
8205 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
8206
8207 ioarcb = &ipr_cmd->ioarcb;
a32c055f
WB		 8208 ipr_cmd->dma_addr = dma_addr;
8209 if (ioa_cfg->sis64)
8210 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
8211 else
8212 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
8213
1da177e4 8214 ioarcb->host_response_handle = cpu_to_be32(i << 2);
a32c055f
WB		 8215 if (ioa_cfg->sis64) {
8216 ioarcb->u.sis64_addr_data.data_ioadl_addr =
8217 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
8218 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
96d21f00 8219 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
a32c055f
WB		 8220 } else {
8221 ioarcb->write_ioadl_addr =
8222 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
8223 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
8224 ioarcb->ioasa_host_pci_addr =
96d21f00 8225 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
a32c055f 8226 }
1da177e4
LT		 8227 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
8228 ipr_cmd->cmd_index = i;
8229 ipr_cmd->ioa_cfg = ioa_cfg;
8230 ipr_cmd->sense_buffer_dma = dma_addr +
8231 offsetof(struct ipr_cmnd, sense_buffer);
8232
8233 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
8234 }
8235
8236 return 0;
8237}
8238
8239/**
8240 * ipr_alloc_mem - Allocate memory for an adapter
8241 * @ioa_cfg: ioa config struct
8242 *
8243 * Return value:
8244 * 0 on success / non-zero for error
8245 **/
8246static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
8247{
8248 struct pci_dev *pdev = ioa_cfg->pdev;
8249 int i, rc = -ENOMEM;
8250
8251 ENTER;
0bc42e35 8252 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
3e7ebdfa 8253 ioa_cfg->max_devs_supported, GFP_KERNEL);
1da177e4
LT		 8254
8255 if (!ioa_cfg->res_entries)
8256 goto out;
8257
3e7ebdfa
WB		 8258 if (ioa_cfg->sis64) {
8259 ioa_cfg->target_ids = kzalloc(sizeof(unsigned long) *
8260 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8261 ioa_cfg->array_ids = kzalloc(sizeof(unsigned long) *
8262 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8263 ioa_cfg->vset_ids = kzalloc(sizeof(unsigned long) *
8264 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8265 }
8266
8267 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
1da177e4 8268 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
3e7ebdfa
WB		 8269 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
8270 }
1da177e4
LT		 8271
8272 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
8273 sizeof(struct ipr_misc_cbs),
8274 &ioa_cfg->vpd_cbs_dma);
8275
8276 if (!ioa_cfg->vpd_cbs)
8277 goto out_free_res_entries;
8278
8279 if (ipr_alloc_cmd_blks(ioa_cfg))
8280 goto out_free_vpd_cbs;
8281
8282 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
8283 sizeof(u32) * IPR_NUM_CMD_BLKS,
8284 &ioa_cfg->host_rrq_dma);
8285
8286 if (!ioa_cfg->host_rrq)
8287 goto out_ipr_free_cmd_blocks;
8288
3e7ebdfa
WB		 8289 ioa_cfg->u.cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
8290 ioa_cfg->cfg_table_size,
8291 &ioa_cfg->cfg_table_dma);
1da177e4 8292
3e7ebdfa 8293 if (!ioa_cfg->u.cfg_table)
1da177e4
LT		 8294 goto out_free_host_rrq;
8295
8296 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8297 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
8298 sizeof(struct ipr_hostrcb),
8299 &ioa_cfg->hostrcb_dma[i]);
8300
8301 if (!ioa_cfg->hostrcb[i])
8302 goto out_free_hostrcb_dma;
8303
8304 ioa_cfg->hostrcb[i]->hostrcb_dma =
8305 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
49dc6a18 8306 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
1da177e4
LT		 8307 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
8308 }
8309
0bc42e35 8310 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
1da177e4
LT		 8311 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
8312
8313 if (!ioa_cfg->trace)
8314 goto out_free_hostrcb_dma;
8315
1da177e4
LT		 8316 rc = 0;
8317out:
8318 LEAVE;
8319 return rc;
8320
8321out_free_hostrcb_dma:
8322 while (i-- > 0) {
8323 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
8324 ioa_cfg->hostrcb[i],
8325 ioa_cfg->hostrcb_dma[i]);
8326 }
3e7ebdfa
WB		 8327 pci_free_consistent(pdev, ioa_cfg->cfg_table_size,
8328 ioa_cfg->u.cfg_table,
8329 ioa_cfg->cfg_table_dma);
1da177e4
LT		 8330out_free_host_rrq:
8331 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
8332 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
8333out_ipr_free_cmd_blocks:
8334 ipr_free_cmd_blks(ioa_cfg);
8335out_free_vpd_cbs:
8336 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
8337 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8338out_free_res_entries:
8339 kfree(ioa_cfg->res_entries);
8340 goto out;
8341}
8342
8343/**
8344 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
8345 * @ioa_cfg: ioa config struct
8346 *
8347 * Return value:
8348 * none
8349 **/
8350static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
8351{
8352 int i;
8353
8354 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
8355 ioa_cfg->bus_attr[i].bus = i;
8356 ioa_cfg->bus_attr[i].qas_enabled = 0;
8357 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
8358 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
8359 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
8360 else
8361 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
8362 }
8363}
8364
8365/**
8366 * ipr_init_ioa_cfg - Initialize IOA config struct
8367 * @ioa_cfg: ioa config struct
8368 * @host: scsi host struct
8369 * @pdev: PCI dev struct
8370 *
8371 * Return value:
8372 * none
8373 **/
8374static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
8375 struct Scsi_Host *host, struct pci_dev *pdev)
8376{
8377 const struct ipr_interrupt_offsets *p;
8378 struct ipr_interrupts *t;
8379 void __iomem *base;
8380
8381 ioa_cfg->host = host;
8382 ioa_cfg->pdev = pdev;
8383 ioa_cfg->log_level = ipr_log_level;
3d1d0da6 8384 ioa_cfg->doorbell = IPR_DOORBELL;
1da177e4
LT		 8385 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
8386 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
8387 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
8388 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
8389 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
8390 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
8391 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
8392 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
8393
8394 INIT_LIST_HEAD(&ioa_cfg->free_q);
8395 INIT_LIST_HEAD(&ioa_cfg->pending_q);
8396 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
8397 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
8398 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
8399 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
c4028958 8400 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
1da177e4 8401 init_waitqueue_head(&ioa_cfg->reset_wait_q);
95fecd90 8402 init_waitqueue_head(&ioa_cfg->msi_wait_q);
1da177e4
LT		 8403 ioa_cfg->sdt_state = INACTIVE;
8404
8405 ipr_initialize_bus_attr(ioa_cfg);
3e7ebdfa 8406 ioa_cfg->max_devs_supported = ipr_max_devs;
1da177e4 8407
3e7ebdfa
WB		 8408 if (ioa_cfg->sis64) {
8409 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
8410 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
8411 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
8412 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
8413 } else {
8414 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
8415 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
8416 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
8417 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
8418 }
1da177e4
LT		 8419 host->max_channel = IPR_MAX_BUS_TO_SCAN;
8420 host->unique_id = host->host_no;
8421 host->max_cmd_len = IPR_MAX_CDB_LEN;
8422 pci_set_drvdata(pdev, ioa_cfg);
8423
8424 p = &ioa_cfg->chip_cfg->regs;
8425 t = &ioa_cfg->regs;
8426 base = ioa_cfg->hdw_dma_regs;
8427
8428 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
8429 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
214777ba 8430 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
1da177e4 8431 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
214777ba 8432 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
1da177e4 8433 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
214777ba 8434 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
1da177e4 8435 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
214777ba 8436 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
1da177e4
LT		 8437 t->ioarrin_reg = base + p->ioarrin_reg;
8438 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
214777ba 8439 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
1da177e4 8440 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
214777ba 8441 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
1da177e4 8442 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
214777ba 8443 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
dcbad00e
WB		 8444
8445 if (ioa_cfg->sis64) {
214777ba 8446 t->init_feedback_reg = base + p->init_feedback_reg;
dcbad00e
WB		 8447 t->dump_addr_reg = base + p->dump_addr_reg;
8448 t->dump_data_reg = base + p->dump_data_reg;
8701f185 8449 t->endian_swap_reg = base + p->endian_swap_reg;
dcbad00e 8450 }
1da177e4
LT		 8451}
8452
8453/**
1be7bd82 8454 * ipr_get_chip_info - Find adapter chip information
1da177e4
LT		 8455 * @dev_id: PCI device id struct
8456 *
8457 * Return value:
1be7bd82 8458 * ptr to chip information on success / NULL on failure
1da177e4 8459 **/
1be7bd82
WB		 8460static const struct ipr_chip_t * __devinit
8461ipr_get_chip_info(const struct pci_device_id *dev_id)
1da177e4
LT		 8462{
8463 int i;
8464
1da177e4
LT		 8465 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
8466 if (ipr_chip[i].vendor == dev_id->vendor &&
8467 ipr_chip[i].device == dev_id->device)
1be7bd82 8468 return &ipr_chip[i];
1da177e4
LT		 8469 return NULL;
8470}
8471
95fecd90
WB		 8472/**
8473 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
8474 * @pdev: PCI device struct
8475 *
8476 * Description: Simply set the msi_received flag to 1 indicating that
8477 * Message Signaled Interrupts are supported.
8478 *
8479 * Return value:
8480 * 0 on success / non-zero on failure
8481 **/
8482static irqreturn_t __devinit ipr_test_intr(int irq, void *devp)
8483{
8484 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
8485 unsigned long lock_flags = 0;
8486 irqreturn_t rc = IRQ_HANDLED;
8487
8488 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8489
8490 ioa_cfg->msi_received = 1;
8491 wake_up(&ioa_cfg->msi_wait_q);
8492
8493 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8494 return rc;
8495}
8496
8497/**
8498 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
8499 * @pdev: PCI device struct
8500 *
8501 * Description: The return value from pci_enable_msi() can not always be
8502 * trusted. This routine sets up and initiates a test interrupt to determine
8503 * if the interrupt is received via the ipr_test_intr() service routine.
8504 * If the tests fails, the driver will fall back to LSI.
8505 *
8506 * Return value:
8507 * 0 on success / non-zero on failure
8508 **/
8509static int __devinit ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg,
8510 struct pci_dev *pdev)
8511{
8512 int rc;
8513 volatile u32 int_reg;
8514 unsigned long lock_flags = 0;
8515
8516 ENTER;
8517
8518 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8519 init_waitqueue_head(&ioa_cfg->msi_wait_q);
8520 ioa_cfg->msi_received = 0;
8521 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
214777ba 8522 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
95fecd90
WB		 8523 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8524 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8525
8526 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
8527 if (rc) {
8528 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
8529 return rc;
8530 } else if (ipr_debug)
8531 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
8532
214777ba 8533 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
95fecd90
WB		 8534 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8535 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
8536 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8537
8538 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8539 if (!ioa_cfg->msi_received) {
8540 /* MSI test failed */
8541 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
8542 rc = -EOPNOTSUPP;
8543 } else if (ipr_debug)
8544 dev_info(&pdev->dev, "MSI test succeeded.\n");
8545
8546 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8547
8548 free_irq(pdev->irq, ioa_cfg);
8549
8550 LEAVE;
8551
8552 return rc;
8553}
8554
1da177e4
LT		 8555/**
8556 * ipr_probe_ioa - Allocates memory and does first stage of initialization
8557 * @pdev: PCI device struct
8558 * @dev_id: PCI device id struct
8559 *
8560 * Return value:
8561 * 0 on success / non-zero on failure
8562 **/
8563static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
8564 const struct pci_device_id *dev_id)
8565{
8566 struct ipr_ioa_cfg *ioa_cfg;
8567 struct Scsi_Host *host;
8568 unsigned long ipr_regs_pci;
8569 void __iomem *ipr_regs;
a2a65a3e 8570 int rc = PCIBIOS_SUCCESSFUL;
473b1e8e 8571 volatile u32 mask, uproc, interrupts;
1da177e4
LT		 8572
8573 ENTER;
8574
8575 if ((rc = pci_enable_device(pdev))) {
8576 dev_err(&pdev->dev, "Cannot enable adapter\n");
8577 goto out;
8578 }
8579
8580 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
8581
8582 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
8583
8584 if (!host) {
8585 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
8586 rc = -ENOMEM;
8587 goto out_disable;
8588 }
8589
8590 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
8591 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
35a39691
BK		 8592 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
8593 sata_port_info.flags, &ipr_sata_ops);
1da177e4 8594
1be7bd82 8595 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
1da177e4 8596
1be7bd82 8597 if (!ioa_cfg->ipr_chip) {
1da177e4
LT		 8598 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
8599 dev_id->vendor, dev_id->device);
8600 goto out_scsi_host_put;
8601 }
8602
a32c055f
WB		 8603 /* set SIS 32 or SIS 64 */
8604 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
1be7bd82
WB		 8605 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
8606
5469cb5b
BK		 8607 if (ipr_transop_timeout)
8608 ioa_cfg->transop_timeout = ipr_transop_timeout;
8609 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
8610 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
8611 else
8612 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
8613
44c10138 8614 ioa_cfg->revid = pdev->revision;
463fc696 8615
1da177e4
LT		 8616 ipr_regs_pci = pci_resource_start(pdev, 0);
8617
8618 rc = pci_request_regions(pdev, IPR_NAME);
8619 if (rc < 0) {
8620 dev_err(&pdev->dev,
8621 "Couldn't register memory range of registers\n");
8622 goto out_scsi_host_put;
8623 }
8624
25729a7f 8625 ipr_regs = pci_ioremap_bar(pdev, 0);
1da177e4
LT		 8626
8627 if (!ipr_regs) {
8628 dev_err(&pdev->dev,
8629 "Couldn't map memory range of registers\n");
8630 rc = -ENOMEM;
8631 goto out_release_regions;
8632 }
8633
8634 ioa_cfg->hdw_dma_regs = ipr_regs;
8635 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
8636 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
8637
8638 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
8639
8640 pci_set_master(pdev);
8641
a32c055f
WB		 8642 if (ioa_cfg->sis64) {
8643 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
8644 if (rc < 0) {
8645 dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n");
8646 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8647 }
8648
8649 } else
8650 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8651
1da177e4
LT		 8652 if (rc < 0) {
8653 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
8654 goto cleanup_nomem;
8655 }
8656
8657 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
8658 ioa_cfg->chip_cfg->cache_line_size);
8659
8660 if (rc != PCIBIOS_SUCCESSFUL) {
8661 dev_err(&pdev->dev, "Write of cache line size failed\n");
8662 rc = -EIO;
8663 goto cleanup_nomem;
8664 }
8665
95fecd90 8666 /* Enable MSI style interrupts if they are supported. */
1be7bd82 8667 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) {
95fecd90
WB		 8668 rc = ipr_test_msi(ioa_cfg, pdev);
8669 if (rc == -EOPNOTSUPP)
8670 pci_disable_msi(pdev);
8671 else if (rc)
8672 goto out_msi_disable;
8673 else
8674 dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq);
8675 } else if (ipr_debug)
8676 dev_info(&pdev->dev, "Cannot enable MSI.\n");
8677
1da177e4
LT		 8678 /* Save away PCI config space for use following IOA reset */
8679 rc = pci_save_state(pdev);
8680
8681 if (rc != PCIBIOS_SUCCESSFUL) {
8682 dev_err(&pdev->dev, "Failed to save PCI config space\n");
8683 rc = -EIO;
8684 goto cleanup_nomem;
8685 }
8686
8687 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
8688 goto cleanup_nomem;
8689
8690 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
8691 goto cleanup_nomem;
8692
3e7ebdfa
WB		 8693 if (ioa_cfg->sis64)
8694 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
8695 + ((sizeof(struct ipr_config_table_entry64)
8696 * ioa_cfg->max_devs_supported)));
8697 else
8698 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
8699 + ((sizeof(struct ipr_config_table_entry)
8700 * ioa_cfg->max_devs_supported)));
8701
1da177e4
LT		 8702 rc = ipr_alloc_mem(ioa_cfg);
8703 if (rc < 0) {
8704 dev_err(&pdev->dev,
8705 "Couldn't allocate enough memory for device driver!\n");
8706 goto cleanup_nomem;
8707 }
8708
ce155cce
BK		 8709 /*
8710 * If HRRQ updated interrupt is not masked, or reset alert is set,
8711 * the card is in an unknown state and needs a hard reset
8712 */
214777ba
WB		 8713 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
8714 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
8715 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
ce155cce
BK		 8716 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
8717 ioa_cfg->needs_hard_reset = 1;
473b1e8e
BK		 8718 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
8719 ioa_cfg->needs_hard_reset = 1;
8720 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
8721 ioa_cfg->ioa_unit_checked = 1;
ce155cce 8722
1da177e4 8723 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
95fecd90
WB		 8724 rc = request_irq(pdev->irq, ipr_isr,
8725 ioa_cfg->msi_received ? 0 : IRQF_SHARED,
8726 IPR_NAME, ioa_cfg);
1da177e4
LT		 8727
8728 if (rc) {
8729 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
8730 pdev->irq, rc);
8731 goto cleanup_nolog;
8732 }
8733
463fc696
BK		 8734 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
8735 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
8736 ioa_cfg->needs_warm_reset = 1;
8737 ioa_cfg->reset = ipr_reset_slot_reset;
8738 } else
8739 ioa_cfg->reset = ipr_reset_start_bist;
8740
1da177e4
LT		 8741 spin_lock(&ipr_driver_lock);
8742 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
8743 spin_unlock(&ipr_driver_lock);
8744
8745 LEAVE;
8746out:
8747 return rc;
8748
8749cleanup_nolog:
8750 ipr_free_mem(ioa_cfg);
8751cleanup_nomem:
8752 iounmap(ipr_regs);
95fecd90
WB		 8753out_msi_disable:
8754 pci_disable_msi(pdev);
1da177e4
LT		 8755out_release_regions:
8756 pci_release_regions(pdev);
8757out_scsi_host_put:
8758 scsi_host_put(host);
8759out_disable:
8760 pci_disable_device(pdev);
8761 goto out;
8762}
8763
8764/**
8765 * ipr_scan_vsets - Scans for VSET devices
8766 * @ioa_cfg: ioa config struct
8767 *
8768 * Description: Since the VSET resources do not follow SAM in that we can have
8769 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
8770 *
8771 * Return value:
8772 * none
8773 **/
8774static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
8775{
8776 int target, lun;
8777
8778 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
8779 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
8780 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
8781}
8782
8783/**
8784 * ipr_initiate_ioa_bringdown - Bring down an adapter
8785 * @ioa_cfg: ioa config struct
8786 * @shutdown_type: shutdown type
8787 *
8788 * Description: This function will initiate bringing down the adapter.
8789 * This consists of issuing an IOA shutdown to the adapter
8790 * to flush the cache, and running BIST.
8791 * If the caller needs to wait on the completion of the reset,
8792 * the caller must sleep on the reset_wait_q.
8793 *
8794 * Return value:
8795 * none
8796 **/
8797static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
8798 enum ipr_shutdown_type shutdown_type)
8799{
8800 ENTER;
8801 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8802 ioa_cfg->sdt_state = ABORT_DUMP;
8803 ioa_cfg->reset_retries = 0;
8804 ioa_cfg->in_ioa_bringdown = 1;
8805 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
8806 LEAVE;
8807}
8808
8809/**
8810 * __ipr_remove - Remove a single adapter
8811 * @pdev: pci device struct
8812 *
8813 * Adapter hot plug remove entry point.
8814 *
8815 * Return value:
8816 * none
8817 **/
8818static void __ipr_remove(struct pci_dev *pdev)
8819{
8820 unsigned long host_lock_flags = 0;
8821 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8822 ENTER;
8823
8824 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
970ea294
BK		 8825 while(ioa_cfg->in_reset_reload) {
8826 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8827 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8828 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8829 }
8830
1da177e4
LT		 8831 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
8832
8833 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8834 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5cbf5eae 8835 flush_scheduled_work();
1da177e4
LT		 8836 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8837
8838 spin_lock(&ipr_driver_lock);
8839 list_del(&ioa_cfg->queue);
8840 spin_unlock(&ipr_driver_lock);
8841
8842 if (ioa_cfg->sdt_state == ABORT_DUMP)
8843 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8844 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8845
8846 ipr_free_all_resources(ioa_cfg);
8847
8848 LEAVE;
8849}
8850
8851/**
8852 * ipr_remove - IOA hot plug remove entry point
8853 * @pdev: pci device struct
8854 *
8855 * Adapter hot plug remove entry point.
8856 *
8857 * Return value:
8858 * none
8859 **/
f381642d 8860static void __devexit ipr_remove(struct pci_dev *pdev)
1da177e4
LT		 8861{
8862 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8863
8864 ENTER;
8865
ee959b00 8866 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4 8867 &ipr_trace_attr);
ee959b00 8868 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 8869 &ipr_dump_attr);
8870 scsi_remove_host(ioa_cfg->host);
8871
8872 __ipr_remove(pdev);
8873
8874 LEAVE;
8875}
8876
8877/**
8878 * ipr_probe - Adapter hot plug add entry point
8879 *
8880 * Return value:
8881 * 0 on success / non-zero on failure
8882 **/
8883static int __devinit ipr_probe(struct pci_dev *pdev,
8884 const struct pci_device_id *dev_id)
8885{
8886 struct ipr_ioa_cfg *ioa_cfg;
8887 int rc;
8888
8889 rc = ipr_probe_ioa(pdev, dev_id);
8890
8891 if (rc)
8892 return rc;
8893
8894 ioa_cfg = pci_get_drvdata(pdev);
8895 rc = ipr_probe_ioa_part2(ioa_cfg);
8896
8897 if (rc) {
8898 __ipr_remove(pdev);
8899 return rc;
8900 }
8901
8902 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
8903
8904 if (rc) {
8905 __ipr_remove(pdev);
8906 return rc;
8907 }
8908
ee959b00 8909 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 8910 &ipr_trace_attr);
8911
8912 if (rc) {
8913 scsi_remove_host(ioa_cfg->host);
8914 __ipr_remove(pdev);
8915 return rc;
8916 }
8917
ee959b00 8918 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 8919 &ipr_dump_attr);
8920
8921 if (rc) {
ee959b00 8922 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 8923 &ipr_trace_attr);
8924 scsi_remove_host(ioa_cfg->host);
8925 __ipr_remove(pdev);
8926 return rc;
8927 }
8928
8929 scsi_scan_host(ioa_cfg->host);
8930 ipr_scan_vsets(ioa_cfg);
8931 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
8932 ioa_cfg->allow_ml_add_del = 1;
11cd8f12 8933 ioa_cfg->host->max_channel = IPR_VSET_BUS;
1da177e4
LT		 8934 schedule_work(&ioa_cfg->work_q);
8935 return 0;
8936}
8937
8938/**
8939 * ipr_shutdown - Shutdown handler.
d18c3db5 8940 * @pdev: pci device struct
1da177e4
LT		 8941 *
8942 * This function is invoked upon system shutdown/reboot. It will issue
8943 * an adapter shutdown to the adapter to flush the write cache.
8944 *
8945 * Return value:
8946 * none
8947 **/
d18c3db5 8948static void ipr_shutdown(struct pci_dev *pdev)
1da177e4 8949{
d18c3db5 8950 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
1da177e4
LT		 8951 unsigned long lock_flags = 0;
8952
8953 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 8954 while(ioa_cfg->in_reset_reload) {
8955 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8956 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8957 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8958 }
8959
1da177e4
LT		 8960 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
8961 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8962 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8963}
8964
8965static struct pci_device_id ipr_pci_table[] __devinitdata = {
8966 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 8967 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
1da177e4 8968 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 8969 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
1da177e4 8970 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 8971 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
1da177e4 8972 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 8973 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
1da177e4 8974 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 8975 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
1da177e4 8976 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 8977 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
1da177e4 8978 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 8979 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
86f51436 8980 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
5469cb5b
BK		 8981 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
8982 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 8983 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
6d84c944 8984 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 8985 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
22d2e402
BK		 8986 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
8987 IPR_USE_LONG_TRANSOP_TIMEOUT },
60e7486b 8988 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
5469cb5b
BK		 8989 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
8990 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 8991 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
6d84c944 8992 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 8993 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
22d2e402
BK		 8994 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
8995 IPR_USE_LONG_TRANSOP_TIMEOUT},
60e7486b 8996 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
5469cb5b
BK		 8997 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
8998 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c 8999 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
22d2e402
BK		 9000 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
9001 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c
BK		 9002 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9003 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
b0f56d3d
WB		 9004 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9005 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
60e7486b 9006 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
5469cb5b 9007 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
463fc696 9008 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
1da177e4 9009 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6d84c944 9010 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
1da177e4 9011 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6d84c944 9012 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
86f51436 9013 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 9014 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
9015 IPR_USE_LONG_TRANSOP_TIMEOUT },
60e7486b 9016 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 9017 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
9018 IPR_USE_LONG_TRANSOP_TIMEOUT },
d7b4627f
WB		 9019 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9020 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
9021 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9022 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
9023 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9024 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
9025 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9026 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
9027 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9028 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
9029 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9030 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
9031 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9032 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0, 0 },
9033 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9034 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
1da177e4
LT		 9035 { }
9036};
9037MODULE_DEVICE_TABLE(pci, ipr_pci_table);
9038
f8a88b19
LV		 9039static struct pci_error_handlers ipr_err_handler = {
9040 .error_detected = ipr_pci_error_detected,
9041 .slot_reset = ipr_pci_slot_reset,
9042};
9043
1da177e4
LT		 9044static struct pci_driver ipr_driver = {
9045 .name = IPR_NAME,
9046 .id_table = ipr_pci_table,
9047 .probe = ipr_probe,
f381642d 9048 .remove = __devexit_p(ipr_remove),
d18c3db5 9049 .shutdown = ipr_shutdown,
f8a88b19 9050 .err_handler = &ipr_err_handler,
1da177e4
LT		 9051};
9052
f72919ec
WB		 9053/**
9054 * ipr_halt_done - Shutdown prepare completion
9055 *
9056 * Return value:
9057 * none
9058 **/
9059static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
9060{
9061 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9062
9063 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
9064}
9065
9066/**
9067 * ipr_halt - Issue shutdown prepare to all adapters
9068 *
9069 * Return value:
9070 * NOTIFY_OK on success / NOTIFY_DONE on failure
9071 **/
9072static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
9073{
9074 struct ipr_cmnd *ipr_cmd;
9075 struct ipr_ioa_cfg *ioa_cfg;
9076 unsigned long flags = 0;
9077
9078 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
9079 return NOTIFY_DONE;
9080
9081 spin_lock(&ipr_driver_lock);
9082
9083 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
9084 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9085 if (!ioa_cfg->allow_cmds) {
9086 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9087 continue;
9088 }
9089
9090 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9091 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9092 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
9093 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
9094 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
9095
9096 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
9097 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9098 }
9099 spin_unlock(&ipr_driver_lock);
9100
9101 return NOTIFY_OK;
9102}
9103
9104static struct notifier_block ipr_notifier = {
9105 ipr_halt, NULL, 0
9106};
9107
1da177e4
LT		 9108/**
9109 * ipr_init - Module entry point
9110 *
9111 * Return value:
9112 * 0 on success / negative value on failure
9113 **/
9114static int __init ipr_init(void)
9115{
9116 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
9117 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
9118
f72919ec 9119 register_reboot_notifier(&ipr_notifier);
dcbccbde 9120 return pci_register_driver(&ipr_driver);
1da177e4
LT		 9121}
9122
9123/**
9124 * ipr_exit - Module unload
9125 *
9126 * Module unload entry point.
9127 *
9128 * Return value:
9129 * none
9130 **/
9131static void __exit ipr_exit(void)
9132{
f72919ec 9133 unregister_reboot_notifier(&ipr_notifier);
1da177e4
LT		 9134 pci_unregister_driver(&ipr_driver);
9135}
9136
9137module_init(ipr_init);
9138module_exit(ipr_exit);
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