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[SCSI] megaraid_sas: Fix instance access in megasas_reset_timer
[mirror_ubuntu-zesty-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>
4d4dd706 63#include <linux/vmalloc.h>
1da177e4
LT		 64#include <linux/ioport.h>
65#include <linux/delay.h>
66#include <linux/pci.h>
67#include <linux/wait.h>
68#include <linux/spinlock.h>
69#include <linux/sched.h>
70#include <linux/interrupt.h>
71#include <linux/blkdev.h>
72#include <linux/firmware.h>
73#include <linux/module.h>
74#include <linux/moduleparam.h>
35a39691 75#include <linux/libata.h>
0ce3a7e5 76#include <linux/hdreg.h>
f72919ec 77#include <linux/reboot.h>
3e7ebdfa 78#include <linux/stringify.h>
1da177e4
LT		 79#include <asm/io.h>
80#include <asm/irq.h>
81#include <asm/processor.h>
82#include <scsi/scsi.h>
83#include <scsi/scsi_host.h>
84#include <scsi/scsi_tcq.h>
85#include <scsi/scsi_eh.h>
86#include <scsi/scsi_cmnd.h>
1da177e4
LT		 87#include "ipr.h"
88
89/*
90 * Global Data
91 */
b7d68ca3 92static LIST_HEAD(ipr_ioa_head);
1da177e4
LT		 93static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
94static unsigned int ipr_max_speed = 1;
95static int ipr_testmode = 0;
96static unsigned int ipr_fastfail = 0;
5469cb5b 97static unsigned int ipr_transop_timeout = 0;
d3c74871 98static unsigned int ipr_debug = 0;
3e7ebdfa 99static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
ac09c349 100static unsigned int ipr_dual_ioa_raid = 1;
1da177e4
LT		 101static DEFINE_SPINLOCK(ipr_driver_lock);
102
103/* This table describes the differences between DMA controller chips */
104static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
60e7486b 105 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
1da177e4
LT		 106 .mailbox = 0x0042C,
107 .cache_line_size = 0x20,
108 {
109 .set_interrupt_mask_reg = 0x0022C,
110 .clr_interrupt_mask_reg = 0x00230,
214777ba 111 .clr_interrupt_mask_reg32 = 0x00230,
1da177e4 112 .sense_interrupt_mask_reg = 0x0022C,
214777ba 113 .sense_interrupt_mask_reg32 = 0x0022C,
1da177e4 114 .clr_interrupt_reg = 0x00228,
214777ba 115 .clr_interrupt_reg32 = 0x00228,
1da177e4 116 .sense_interrupt_reg = 0x00224,
214777ba 117 .sense_interrupt_reg32 = 0x00224,
1da177e4
LT		 118 .ioarrin_reg = 0x00404,
119 .sense_uproc_interrupt_reg = 0x00214,
214777ba 120 .sense_uproc_interrupt_reg32 = 0x00214,
1da177e4 121 .set_uproc_interrupt_reg = 0x00214,
214777ba
WB		 122 .set_uproc_interrupt_reg32 = 0x00214,
123 .clr_uproc_interrupt_reg = 0x00218,
124 .clr_uproc_interrupt_reg32 = 0x00218
1da177e4
LT		 125 }
126 },
127 { /* Snipe and Scamp */
128 .mailbox = 0x0052C,
129 .cache_line_size = 0x20,
130 {
131 .set_interrupt_mask_reg = 0x00288,
132 .clr_interrupt_mask_reg = 0x0028C,
214777ba 133 .clr_interrupt_mask_reg32 = 0x0028C,
1da177e4 134 .sense_interrupt_mask_reg = 0x00288,
214777ba 135 .sense_interrupt_mask_reg32 = 0x00288,
1da177e4 136 .clr_interrupt_reg = 0x00284,
214777ba 137 .clr_interrupt_reg32 = 0x00284,
1da177e4 138 .sense_interrupt_reg = 0x00280,
214777ba 139 .sense_interrupt_reg32 = 0x00280,
1da177e4
LT		 140 .ioarrin_reg = 0x00504,
141 .sense_uproc_interrupt_reg = 0x00290,
214777ba 142 .sense_uproc_interrupt_reg32 = 0x00290,
1da177e4 143 .set_uproc_interrupt_reg = 0x00290,
214777ba
WB		 144 .set_uproc_interrupt_reg32 = 0x00290,
145 .clr_uproc_interrupt_reg = 0x00294,
146 .clr_uproc_interrupt_reg32 = 0x00294
1da177e4
LT		 147 }
148 },
a74c1639 149 { /* CRoC */
110def85 150 .mailbox = 0x00044,
a74c1639
WB		 151 .cache_line_size = 0x20,
152 {
153 .set_interrupt_mask_reg = 0x00010,
154 .clr_interrupt_mask_reg = 0x00018,
214777ba 155 .clr_interrupt_mask_reg32 = 0x0001C,
a74c1639 156 .sense_interrupt_mask_reg = 0x00010,
214777ba 157 .sense_interrupt_mask_reg32 = 0x00014,
a74c1639 158 .clr_interrupt_reg = 0x00008,
214777ba 159 .clr_interrupt_reg32 = 0x0000C,
a74c1639 160 .sense_interrupt_reg = 0x00000,
214777ba 161 .sense_interrupt_reg32 = 0x00004,
a74c1639
WB		 162 .ioarrin_reg = 0x00070,
163 .sense_uproc_interrupt_reg = 0x00020,
214777ba 164 .sense_uproc_interrupt_reg32 = 0x00024,
a74c1639 165 .set_uproc_interrupt_reg = 0x00020,
214777ba 166 .set_uproc_interrupt_reg32 = 0x00024,
dcbad00e 167 .clr_uproc_interrupt_reg = 0x00028,
214777ba
WB		 168 .clr_uproc_interrupt_reg32 = 0x0002C,
169 .init_feedback_reg = 0x0005C,
dcbad00e 170 .dump_addr_reg = 0x00064,
8701f185
WB		 171 .dump_data_reg = 0x00068,
172 .endian_swap_reg = 0x00084
a74c1639
WB		 173 }
174 },
1da177e4
LT		 175};
176
177static const struct ipr_chip_t ipr_chip[] = {
cb237ef7
WB		 178 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
179 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
180 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
181 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
182 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
183 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
184 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
185 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
186 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
1da177e4
LT		 187};
188
189static int ipr_max_bus_speeds [] = {
190 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
191};
192
193MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
194MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
195module_param_named(max_speed, ipr_max_speed, uint, 0);
196MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
197module_param_named(log_level, ipr_log_level, uint, 0);
198MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
199module_param_named(testmode, ipr_testmode, int, 0);
200MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
2cf22be0 201module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
1da177e4
LT		 202MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
203module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
204MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
2cf22be0 205module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
d3c74871 206MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
ac09c349
BK		 207module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
208MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
3e7ebdfa
WB		 209module_param_named(max_devs, ipr_max_devs, int, 0);
210MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
211 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
1da177e4
LT		 212MODULE_LICENSE("GPL");
213MODULE_VERSION(IPR_DRIVER_VERSION);
214
1da177e4
LT		 215/* A constant array of IOASCs/URCs/Error Messages */
216static const
217struct ipr_error_table_t ipr_error_table[] = {
933916f3 218 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 219 "8155: An unknown error was received"},
220 {0x00330000, 0, 0,
221 "Soft underlength error"},
222 {0x005A0000, 0, 0,
223 "Command to be cancelled not found"},
224 {0x00808000, 0, 0,
225 "Qualified success"},
933916f3 226 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 227 "FFFE: Soft device bus error recovered by the IOA"},
933916f3 228 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 229 "4101: Soft device bus fabric error"},
5aa3a333
WB		 230 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
231 "FFFC: Logical block guard error recovered by the device"},
232 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
233 "FFFC: Logical block reference tag error recovered by the device"},
234 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
235 "4171: Recovered scatter list tag / sequence number error"},
236 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
237 "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
238 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
239 "4171: Recovered logical block sequence number error on IOA to Host transfer"},
240 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
241 "FFFD: Recovered logical block reference tag error detected by the IOA"},
242 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
243 "FFFD: Logical block guard error recovered by the IOA"},
933916f3 244 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 245 "FFF9: Device sector reassign successful"},
933916f3 246 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 247 "FFF7: Media error recovered by device rewrite procedures"},
933916f3 248 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 249 "7001: IOA sector reassignment successful"},
933916f3 250 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 251 "FFF9: Soft media error. Sector reassignment recommended"},
933916f3 252 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 253 "FFF7: Media error recovered by IOA rewrite procedures"},
933916f3 254 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 255 "FF3D: Soft PCI bus error recovered by the IOA"},
933916f3 256 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 257 "FFF6: Device hardware error recovered by the IOA"},
933916f3 258 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 259 "FFF6: Device hardware error recovered by the device"},
933916f3 260 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 261 "FF3D: Soft IOA error recovered by the IOA"},
933916f3 262 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 263 "FFFA: Undefined device response recovered by the IOA"},
933916f3 264 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 265 "FFF6: Device bus error, message or command phase"},
933916f3 266 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
35a39691 267 "FFFE: Task Management Function failed"},
933916f3 268 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 269 "FFF6: Failure prediction threshold exceeded"},
933916f3 270 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 271 "8009: Impending cache battery pack failure"},
272 {0x02040400, 0, 0,
273 "34FF: Disk device format in progress"},
65f56475
BK		 274 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
275 "9070: IOA requested reset"},
1da177e4
LT		 276 {0x023F0000, 0, 0,
277 "Synchronization required"},
278 {0x024E0000, 0, 0,
279 "No ready, IOA shutdown"},
280 {0x025A0000, 0, 0,
281 "Not ready, IOA has been shutdown"},
933916f3 282 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 283 "3020: Storage subsystem configuration error"},
284 {0x03110B00, 0, 0,
285 "FFF5: Medium error, data unreadable, recommend reassign"},
286 {0x03110C00, 0, 0,
287 "7000: Medium error, data unreadable, do not reassign"},
933916f3 288 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 289 "FFF3: Disk media format bad"},
933916f3 290 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 291 "3002: Addressed device failed to respond to selection"},
933916f3 292 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 293 "3100: Device bus error"},
933916f3 294 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 295 "3109: IOA timed out a device command"},
296 {0x04088000, 0, 0,
297 "3120: SCSI bus is not operational"},
933916f3 298 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 299 "4100: Hard device bus fabric error"},
5aa3a333
WB		 300 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
301 "310C: Logical block guard error detected by the device"},
302 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
303 "310C: Logical block reference tag error detected by the device"},
304 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
305 "4170: Scatter list tag / sequence number error"},
306 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
307 "8150: Logical block CRC error on IOA to Host transfer"},
308 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
309 "4170: Logical block sequence number error on IOA to Host transfer"},
310 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
311 "310D: Logical block reference tag error detected by the IOA"},
312 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
313 "310D: Logical block guard error detected by the IOA"},
933916f3 314 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 315 "9000: IOA reserved area data check"},
933916f3 316 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 317 "9001: IOA reserved area invalid data pattern"},
933916f3 318 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 319 "9002: IOA reserved area LRC error"},
5aa3a333
WB		 320 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
321 "Hardware Error, IOA metadata access error"},
933916f3 322 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 323 "102E: Out of alternate sectors for disk storage"},
933916f3 324 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 325 "FFF4: Data transfer underlength error"},
933916f3 326 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 327 "FFF4: Data transfer overlength error"},
933916f3 328 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 329 "3400: Logical unit failure"},
933916f3 330 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 331 "FFF4: Device microcode is corrupt"},
933916f3 332 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 333 "8150: PCI bus error"},
334 {0x04430000, 1, 0,
335 "Unsupported device bus message received"},
933916f3 336 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 337 "FFF4: Disk device problem"},
933916f3 338 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 339 "8150: Permanent IOA failure"},
933916f3 340 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 341 "3010: Disk device returned wrong response to IOA"},
933916f3 342 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 343 "8151: IOA microcode error"},
344 {0x04448500, 0, 0,
345 "Device bus status error"},
933916f3 346 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 347 "8157: IOA error requiring IOA reset to recover"},
35a39691
BK		 348 {0x04448700, 0, 0,
349 "ATA device status error"},
1da177e4
LT		 350 {0x04490000, 0, 0,
351 "Message reject received from the device"},
933916f3 352 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 353 "8008: A permanent cache battery pack failure occurred"},
933916f3 354 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 355 "9090: Disk unit has been modified after the last known status"},
933916f3 356 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 357 "9081: IOA detected device error"},
933916f3 358 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 359 "9082: IOA detected device error"},
933916f3 360 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 361 "3110: Device bus error, message or command phase"},
933916f3 362 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
35a39691 363 "3110: SAS Command / Task Management Function failed"},
933916f3 364 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 365 "9091: Incorrect hardware configuration change has been detected"},
933916f3 366 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 367 "9073: Invalid multi-adapter configuration"},
933916f3 368 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 369 "4010: Incorrect connection between cascaded expanders"},
933916f3 370 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 371 "4020: Connections exceed IOA design limits"},
933916f3 372 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 373 "4030: Incorrect multipath connection"},
933916f3 374 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 375 "4110: Unsupported enclosure function"},
933916f3 376 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 377 "FFF4: Command to logical unit failed"},
378 {0x05240000, 1, 0,
379 "Illegal request, invalid request type or request packet"},
380 {0x05250000, 0, 0,
381 "Illegal request, invalid resource handle"},
b0df54bb
BK		 382 {0x05258000, 0, 0,
383 "Illegal request, commands not allowed to this device"},
384 {0x05258100, 0, 0,
385 "Illegal request, command not allowed to a secondary adapter"},
5aa3a333
WB		 386 {0x05258200, 0, 0,
387 "Illegal request, command not allowed to a non-optimized resource"},
1da177e4
LT		 388 {0x05260000, 0, 0,
389 "Illegal request, invalid field in parameter list"},
390 {0x05260100, 0, 0,
391 "Illegal request, parameter not supported"},
392 {0x05260200, 0, 0,
393 "Illegal request, parameter value invalid"},
394 {0x052C0000, 0, 0,
395 "Illegal request, command sequence error"},
b0df54bb
BK		 396 {0x052C8000, 1, 0,
397 "Illegal request, dual adapter support not enabled"},
933916f3 398 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 399 "9031: Array protection temporarily suspended, protection resuming"},
933916f3 400 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 401 "9040: Array protection temporarily suspended, protection resuming"},
933916f3 402 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 403 "3140: Device bus not ready to ready transition"},
933916f3 404 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 405 "FFFB: SCSI bus was reset"},
406 {0x06290500, 0, 0,
407 "FFFE: SCSI bus transition to single ended"},
408 {0x06290600, 0, 0,
409 "FFFE: SCSI bus transition to LVD"},
933916f3 410 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 411 "FFFB: SCSI bus was reset by another initiator"},
933916f3 412 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 413 "3029: A device replacement has occurred"},
933916f3 414 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 415 "9051: IOA cache data exists for a missing or failed device"},
933916f3 416 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 417 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
933916f3 418 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 419 "9025: Disk unit is not supported at its physical location"},
933916f3 420 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 421 "3020: IOA detected a SCSI bus configuration error"},
933916f3 422 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 423 "3150: SCSI bus configuration error"},
933916f3 424 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 425 "9074: Asymmetric advanced function disk configuration"},
933916f3 426 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 427 "4040: Incomplete multipath connection between IOA and enclosure"},
933916f3 428 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 429 "4041: Incomplete multipath connection between enclosure and device"},
933916f3 430 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 431 "9075: Incomplete multipath connection between IOA and remote IOA"},
933916f3 432 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 433 "9076: Configuration error, missing remote IOA"},
933916f3 434 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 435 "4050: Enclosure does not support a required multipath function"},
b75424fc
WB		 436 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
437 "4070: Logically bad block written on device"},
933916f3 438 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 439 "9041: Array protection temporarily suspended"},
933916f3 440 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 441 "9042: Corrupt array parity detected on specified device"},
933916f3 442 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 443 "9030: Array no longer protected due to missing or failed disk unit"},
933916f3 444 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 445 "9071: Link operational transition"},
933916f3 446 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 447 "9072: Link not operational transition"},
933916f3 448 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 449 "9032: Array exposed but still protected"},
e435340c
BK		 450 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
451 "70DD: Device forced failed by disrupt device command"},
933916f3 452 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 453 "4061: Multipath redundancy level got better"},
933916f3 454 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 455 "4060: Multipath redundancy level got worse"},
1da177e4
LT		 456 {0x07270000, 0, 0,
457 "Failure due to other device"},
933916f3 458 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 459 "9008: IOA does not support functions expected by devices"},
933916f3 460 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 461 "9010: Cache data associated with attached devices cannot be found"},
933916f3 462 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 463 "9011: Cache data belongs to devices other than those attached"},
933916f3 464 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 465 "9020: Array missing 2 or more devices with only 1 device present"},
933916f3 466 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 467 "9021: Array missing 2 or more devices with 2 or more devices present"},
933916f3 468 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 469 "9022: Exposed array is missing a required device"},
933916f3 470 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 471 "9023: Array member(s) not at required physical locations"},
933916f3 472 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 473 "9024: Array not functional due to present hardware configuration"},
933916f3 474 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 475 "9026: Array not functional due to present hardware configuration"},
933916f3 476 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 477 "9027: Array is missing a device and parity is out of sync"},
933916f3 478 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 479 "9028: Maximum number of arrays already exist"},
933916f3 480 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 481 "9050: Required cache data cannot be located for a disk unit"},
933916f3 482 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 483 "9052: Cache data exists for a device that has been modified"},
933916f3 484 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 485 "9054: IOA resources not available due to previous problems"},
933916f3 486 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 487 "9092: Disk unit requires initialization before use"},
933916f3 488 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 489 "9029: Incorrect hardware configuration change has been detected"},
933916f3 490 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 491 "9060: One or more disk pairs are missing from an array"},
933916f3 492 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 493 "9061: One or more disks are missing from an array"},
933916f3 494 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 495 "9062: One or more disks are missing from an array"},
933916f3 496 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 497 "9063: Maximum number of functional arrays has been exceeded"},
498 {0x0B260000, 0, 0,
499 "Aborted command, invalid descriptor"},
500 {0x0B5A0000, 0, 0,
501 "Command terminated by host"}
502};
503
504static const struct ipr_ses_table_entry ipr_ses_table[] = {
505 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
506 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
507 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
508 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
509 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
510 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
511 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
512 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
513 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
514 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
515 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
516 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
517 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
518};
519
520/*
521 * Function Prototypes
522 */
523static int ipr_reset_alert(struct ipr_cmnd *);
524static void ipr_process_ccn(struct ipr_cmnd *);
525static void ipr_process_error(struct ipr_cmnd *);
526static void ipr_reset_ioa_job(struct ipr_cmnd *);
527static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
528 enum ipr_shutdown_type);
529
530#ifdef CONFIG_SCSI_IPR_TRACE
531/**
532 * ipr_trc_hook - Add a trace entry to the driver trace
533 * @ipr_cmd: ipr command struct
534 * @type: trace type
535 * @add_data: additional data
536 *
537 * Return value:
538 * none
539 **/
540static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
541 u8 type, u32 add_data)
542{
543 struct ipr_trace_entry *trace_entry;
544 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
545
546 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
547 trace_entry->time = jiffies;
548 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
549 trace_entry->type = type;
a32c055f
WB		 550 if (ipr_cmd->ioa_cfg->sis64)
551 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
552 else
553 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
35a39691 554 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
1da177e4
LT		 555 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
556 trace_entry->u.add_data = add_data;
557}
558#else
559#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
560#endif
561
562/**
563 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
564 * @ipr_cmd: ipr command struct
565 *
566 * Return value:
567 * none
568 **/
569static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
570{
571 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
96d21f00
WB		 572 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
573 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
a32c055f 574 dma_addr_t dma_addr = ipr_cmd->dma_addr;
1da177e4
LT		 575
576 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
a32c055f 577 ioarcb->data_transfer_length = 0;
1da177e4 578 ioarcb->read_data_transfer_length = 0;
a32c055f 579 ioarcb->ioadl_len = 0;
1da177e4 580 ioarcb->read_ioadl_len = 0;
a32c055f 581
96d21f00 582 if (ipr_cmd->ioa_cfg->sis64) {
a32c055f
WB		 583 ioarcb->u.sis64_addr_data.data_ioadl_addr =
584 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
96d21f00
WB		 585 ioasa64->u.gata.status = 0;
586 } else {
a32c055f
WB		 587 ioarcb->write_ioadl_addr =
588 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
589 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
96d21f00 590 ioasa->u.gata.status = 0;
a32c055f
WB		 591 }
592
96d21f00
WB		 593 ioasa->hdr.ioasc = 0;
594 ioasa->hdr.residual_data_len = 0;
1da177e4 595 ipr_cmd->scsi_cmd = NULL;
35a39691 596 ipr_cmd->qc = NULL;
1da177e4
LT		 597 ipr_cmd->sense_buffer[0] = 0;
598 ipr_cmd->dma_use_sg = 0;
599}
600
601/**
602 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
603 * @ipr_cmd: ipr command struct
604 *
605 * Return value:
606 * none
607 **/
608static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
609{
610 ipr_reinit_ipr_cmnd(ipr_cmd);
611 ipr_cmd->u.scratch = 0;
612 ipr_cmd->sibling = NULL;
613 init_timer(&ipr_cmd->timer);
614}
615
616/**
617 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
618 * @ioa_cfg: ioa config struct
619 *
620 * Return value:
621 * pointer to ipr command struct
622 **/
623static
624struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
625{
626 struct ipr_cmnd *ipr_cmd;
627
628 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
629 list_del(&ipr_cmd->queue);
630 ipr_init_ipr_cmnd(ipr_cmd);
631
632 return ipr_cmd;
633}
634
1da177e4
LT		 635/**
636 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
637 * @ioa_cfg: ioa config struct
638 * @clr_ints: interrupts to clear
639 *
640 * This function masks all interrupts on the adapter, then clears the
641 * interrupts specified in the mask
642 *
643 * Return value:
644 * none
645 **/
646static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
647 u32 clr_ints)
648{
649 volatile u32 int_reg;
650
651 /* Stop new interrupts */
652 ioa_cfg->allow_interrupts = 0;
653
654 /* Set interrupt mask to stop all new interrupts */
214777ba
WB		 655 if (ioa_cfg->sis64)
656 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
657 else
658 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
1da177e4
LT		 659
660 /* Clear any pending interrupts */
214777ba
WB		 661 if (ioa_cfg->sis64)
662 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
663 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
1da177e4
LT		 664 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
665}
666
667/**
668 * ipr_save_pcix_cmd_reg - Save PCI-X command register
669 * @ioa_cfg: ioa config struct
670 *
671 * Return value:
672 * 0 on success / -EIO on failure
673 **/
674static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
675{
676 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
677
7dce0e1c
BK		 678 if (pcix_cmd_reg == 0)
679 return 0;
1da177e4
LT		 680
681 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
682 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
683 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
684 return -EIO;
685 }
686
687 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
688 return 0;
689}
690
691/**
692 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
693 * @ioa_cfg: ioa config struct
694 *
695 * Return value:
696 * 0 on success / -EIO on failure
697 **/
698static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
699{
700 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
701
702 if (pcix_cmd_reg) {
703 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
704 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
705 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
706 return -EIO;
707 }
1da177e4
LT		 708 }
709
710 return 0;
711}
712
35a39691
BK		 713/**
714 * ipr_sata_eh_done - done function for aborted SATA commands
715 * @ipr_cmd: ipr command struct
716 *
717 * This function is invoked for ops generated to SATA
718 * devices which are being aborted.
719 *
720 * Return value:
721 * none
722 **/
723static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
724{
725 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
726 struct ata_queued_cmd *qc = ipr_cmd->qc;
727 struct ipr_sata_port *sata_port = qc->ap->private_data;
728
729 qc->err_mask |= AC_ERR_OTHER;
730 sata_port->ioasa.status |= ATA_BUSY;
731 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
732 ata_qc_complete(qc);
733}
734
1da177e4
LT		 735/**
736 * ipr_scsi_eh_done - mid-layer done function for aborted ops
737 * @ipr_cmd: ipr command struct
738 *
739 * This function is invoked by the interrupt handler for
740 * ops generated by the SCSI mid-layer which are being aborted.
741 *
742 * Return value:
743 * none
744 **/
745static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
746{
747 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
748 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
749
750 scsi_cmd->result |= (DID_ERROR << 16);
751
63015bc9 752 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 753 scsi_cmd->scsi_done(scsi_cmd);
754 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
755}
756
757/**
758 * ipr_fail_all_ops - Fails all outstanding ops.
759 * @ioa_cfg: ioa config struct
760 *
761 * This function fails all outstanding ops.
762 *
763 * Return value:
764 * none
765 **/
766static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
767{
768 struct ipr_cmnd *ipr_cmd, *temp;
769
770 ENTER;
771 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
772 list_del(&ipr_cmd->queue);
773
96d21f00
WB		 774 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
775 ipr_cmd->s.ioasa.hdr.ilid = cpu_to_be32(IPR_DRIVER_ILID);
1da177e4
LT		 776
777 if (ipr_cmd->scsi_cmd)
778 ipr_cmd->done = ipr_scsi_eh_done;
35a39691
BK		 779 else if (ipr_cmd->qc)
780 ipr_cmd->done = ipr_sata_eh_done;
1da177e4
LT		 781
782 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
783 del_timer(&ipr_cmd->timer);
784 ipr_cmd->done(ipr_cmd);
785 }
786
787 LEAVE;
788}
789
a32c055f
WB		 790/**
791 * ipr_send_command - Send driver initiated requests.
792 * @ipr_cmd: ipr command struct
793 *
794 * This function sends a command to the adapter using the correct write call.
795 * In the case of sis64, calculate the ioarcb size required. Then or in the
796 * appropriate bits.
797 *
798 * Return value:
799 * none
800 **/
801static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
802{
803 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
804 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
805
806 if (ioa_cfg->sis64) {
807 /* The default size is 256 bytes */
808 send_dma_addr |= 0x1;
809
810 /* If the number of ioadls * size of ioadl > 128 bytes,
811 then use a 512 byte ioarcb */
812 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
813 send_dma_addr |= 0x4;
814 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
815 } else
816 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
817}
818
1da177e4
LT		 819/**
820 * ipr_do_req - Send driver initiated requests.
821 * @ipr_cmd: ipr command struct
822 * @done: done function
823 * @timeout_func: timeout function
824 * @timeout: timeout value
825 *
826 * This function sends the specified command to the adapter with the
827 * timeout given. The done function is invoked on command completion.
828 *
829 * Return value:
830 * none
831 **/
832static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
833 void (*done) (struct ipr_cmnd *),
834 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
835{
836 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
837
838 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
839
840 ipr_cmd->done = done;
841
842 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
843 ipr_cmd->timer.expires = jiffies + timeout;
844 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
845
846 add_timer(&ipr_cmd->timer);
847
848 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
849
850 mb();
a32c055f
WB		 851
852 ipr_send_command(ipr_cmd);
1da177e4
LT		 853}
854
855/**
856 * ipr_internal_cmd_done - Op done function for an internally generated op.
857 * @ipr_cmd: ipr command struct
858 *
859 * This function is the op done function for an internally generated,
860 * blocking op. It simply wakes the sleeping thread.
861 *
862 * Return value:
863 * none
864 **/
865static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
866{
867 if (ipr_cmd->sibling)
868 ipr_cmd->sibling = NULL;
869 else
870 complete(&ipr_cmd->completion);
871}
872
a32c055f
WB		 873/**
874 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
875 * @ipr_cmd: ipr command struct
876 * @dma_addr: dma address
877 * @len: transfer length
878 * @flags: ioadl flag value
879 *
880 * This function initializes an ioadl in the case where there is only a single
881 * descriptor.
882 *
883 * Return value:
884 * nothing
885 **/
886static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
887 u32 len, int flags)
888{
889 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
890 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
891
892 ipr_cmd->dma_use_sg = 1;
893
894 if (ipr_cmd->ioa_cfg->sis64) {
895 ioadl64->flags = cpu_to_be32(flags);
896 ioadl64->data_len = cpu_to_be32(len);
897 ioadl64->address = cpu_to_be64(dma_addr);
898
899 ipr_cmd->ioarcb.ioadl_len =
900 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
901 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
902 } else {
903 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
904 ioadl->address = cpu_to_be32(dma_addr);
905
906 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
907 ipr_cmd->ioarcb.read_ioadl_len =
908 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
909 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
910 } else {
911 ipr_cmd->ioarcb.ioadl_len =
912 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
913 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
914 }
915 }
916}
917
1da177e4
LT		 918/**
919 * ipr_send_blocking_cmd - Send command and sleep on its completion.
920 * @ipr_cmd: ipr command struct
921 * @timeout_func: function to invoke if command times out
922 * @timeout: timeout
923 *
924 * Return value:
925 * none
926 **/
927static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
928 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
929 u32 timeout)
930{
931 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
932
933 init_completion(&ipr_cmd->completion);
934 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
935
936 spin_unlock_irq(ioa_cfg->host->host_lock);
937 wait_for_completion(&ipr_cmd->completion);
938 spin_lock_irq(ioa_cfg->host->host_lock);
939}
940
941/**
942 * ipr_send_hcam - Send an HCAM to the adapter.
943 * @ioa_cfg: ioa config struct
944 * @type: HCAM type
945 * @hostrcb: hostrcb struct
946 *
947 * This function will send a Host Controlled Async command to the adapter.
948 * If HCAMs are currently not allowed to be issued to the adapter, it will
949 * place the hostrcb on the free queue.
950 *
951 * Return value:
952 * none
953 **/
954static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
955 struct ipr_hostrcb *hostrcb)
956{
957 struct ipr_cmnd *ipr_cmd;
958 struct ipr_ioarcb *ioarcb;
959
960 if (ioa_cfg->allow_cmds) {
961 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
962 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
963 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
964
965 ipr_cmd->u.hostrcb = hostrcb;
966 ioarcb = &ipr_cmd->ioarcb;
967
968 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
969 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
970 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
971 ioarcb->cmd_pkt.cdb[1] = type;
972 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
973 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
974
a32c055f
WB		 975 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
976 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
1da177e4
LT		 977
978 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
979 ipr_cmd->done = ipr_process_ccn;
980 else
981 ipr_cmd->done = ipr_process_error;
982
983 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
984
985 mb();
a32c055f
WB		 986
987 ipr_send_command(ipr_cmd);
1da177e4
LT		 988 } else {
989 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
990 }
991}
992
3e7ebdfa
WB		 993/**
994 * ipr_update_ata_class - Update the ata class in the resource entry
995 * @res: resource entry struct
996 * @proto: cfgte device bus protocol value
997 *
998 * Return value:
999 * none
1000 **/
1001static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1002{
1003 switch(proto) {
1004 case IPR_PROTO_SATA:
1005 case IPR_PROTO_SAS_STP:
1006 res->ata_class = ATA_DEV_ATA;
1007 break;
1008 case IPR_PROTO_SATA_ATAPI:
1009 case IPR_PROTO_SAS_STP_ATAPI:
1010 res->ata_class = ATA_DEV_ATAPI;
1011 break;
1012 default:
1013 res->ata_class = ATA_DEV_UNKNOWN;
1014 break;
1015 };
1016}
1017
1da177e4
LT		 1018/**
1019 * ipr_init_res_entry - Initialize a resource entry struct.
1020 * @res: resource entry struct
3e7ebdfa 1021 * @cfgtew: config table entry wrapper struct
1da177e4
LT		 1022 *
1023 * Return value:
1024 * none
1025 **/
3e7ebdfa
WB		 1026static void ipr_init_res_entry(struct ipr_resource_entry *res,
1027 struct ipr_config_table_entry_wrapper *cfgtew)
1da177e4 1028{
3e7ebdfa
WB		 1029 int found = 0;
1030 unsigned int proto;
1031 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1032 struct ipr_resource_entry *gscsi_res = NULL;
1033
ee0a90fa 1034 res->needs_sync_complete = 0;
1da177e4
LT		 1035 res->in_erp = 0;
1036 res->add_to_ml = 0;
1037 res->del_from_ml = 0;
1038 res->resetting_device = 0;
1039 res->sdev = NULL;
35a39691 1040 res->sata_port = NULL;
3e7ebdfa
WB		 1041
1042 if (ioa_cfg->sis64) {
1043 proto = cfgtew->u.cfgte64->proto;
1044 res->res_flags = cfgtew->u.cfgte64->res_flags;
1045 res->qmodel = IPR_QUEUEING_MODEL64(res);
438b0331 1046 res->type = cfgtew->u.cfgte64->res_type;
3e7ebdfa
WB		 1047
1048 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1049 sizeof(res->res_path));
1050
1051 res->bus = 0;
0cb992ed
WB		 1052 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1053 sizeof(res->dev_lun.scsi_lun));
3e7ebdfa
WB		 1054 res->lun = scsilun_to_int(&res->dev_lun);
1055
1056 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1057 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1058 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1059 found = 1;
1060 res->target = gscsi_res->target;
1061 break;
1062 }
1063 }
1064 if (!found) {
1065 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1066 ioa_cfg->max_devs_supported);
1067 set_bit(res->target, ioa_cfg->target_ids);
1068 }
3e7ebdfa
WB		 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)) &&
0cb992ed 1119 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
3e7ebdfa
WB		 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 }
5767a1c4 1305 } else if (!res->sdev || res->del_from_ml) {
1da177e4
LT		 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),
7262026f 1674 ARRAY_SIZE(error->array_member));
ee0f05b8
BK		 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;
7262026f
WB		 2155 num_entries = min_t(u32, error->num_entries,
2156 ARRAY_SIZE(error->array_member));
4565e370
WB		 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);
7262026f 2170 ipr_err("Current Location: %s\n",
5adcbeb3
WB		 2171 ipr_format_res_path(array_entry->res_path, buffer,
2172 sizeof(buffer)));
7262026f 2173 ipr_err("Expected Location: %s\n",
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;
4d4dd706 2721 int cur_len, rc, rem_len, rem_page_len, max_dump_size;
1da177e4
LT		 2722 __be32 *page;
2723 unsigned long lock_flags = 0;
2724 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2725
4d4dd706
KSS		 2726 if (ioa_cfg->sis64)
2727 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2728 else
2729 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2730
1da177e4 2731 while (bytes_copied < length &&
4d4dd706 2732 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
1da177e4
LT		 2733 if (ioa_dump->page_offset >= PAGE_SIZE ||
2734 ioa_dump->page_offset == 0) {
2735 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2736
2737 if (!page) {
2738 ipr_trace;
2739 return bytes_copied;
2740 }
2741
2742 ioa_dump->page_offset = 0;
2743 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2744 ioa_dump->next_page_index++;
2745 } else
2746 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2747
2748 rem_len = length - bytes_copied;
2749 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2750 cur_len = min(rem_len, rem_page_len);
2751
2752 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2753 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2754 rc = -EIO;
2755 } else {
2756 rc = ipr_get_ldump_data_section(ioa_cfg,
2757 pci_address + bytes_copied,
2758 &page[ioa_dump->page_offset / 4],
2759 (cur_len / sizeof(u32)));
2760 }
2761 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2762
2763 if (!rc) {
2764 ioa_dump->page_offset += cur_len;
2765 bytes_copied += cur_len;
2766 } else {
2767 ipr_trace;
2768 break;
2769 }
2770 schedule();
2771 }
2772
2773 return bytes_copied;
2774}
2775
2776/**
2777 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2778 * @hdr: dump entry header struct
2779 *
2780 * Return value:
2781 * nothing
2782 **/
2783static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2784{
2785 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2786 hdr->num_elems = 1;
2787 hdr->offset = sizeof(*hdr);
2788 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2789}
2790
2791/**
2792 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2793 * @ioa_cfg: ioa config struct
2794 * @driver_dump: driver dump struct
2795 *
2796 * Return value:
2797 * nothing
2798 **/
2799static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2800 struct ipr_driver_dump *driver_dump)
2801{
2802 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2803
2804 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2805 driver_dump->ioa_type_entry.hdr.len =
2806 sizeof(struct ipr_dump_ioa_type_entry) -
2807 sizeof(struct ipr_dump_entry_header);
2808 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2809 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2810 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2811 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2812 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2813 ucode_vpd->minor_release[1];
2814 driver_dump->hdr.num_entries++;
2815}
2816
2817/**
2818 * ipr_dump_version_data - Fill in the driver version in the dump.
2819 * @ioa_cfg: ioa config struct
2820 * @driver_dump: driver dump struct
2821 *
2822 * Return value:
2823 * nothing
2824 **/
2825static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2826 struct ipr_driver_dump *driver_dump)
2827{
2828 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2829 driver_dump->version_entry.hdr.len =
2830 sizeof(struct ipr_dump_version_entry) -
2831 sizeof(struct ipr_dump_entry_header);
2832 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2833 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2834 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2835 driver_dump->hdr.num_entries++;
2836}
2837
2838/**
2839 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2840 * @ioa_cfg: ioa config struct
2841 * @driver_dump: driver dump struct
2842 *
2843 * Return value:
2844 * nothing
2845 **/
2846static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2847 struct ipr_driver_dump *driver_dump)
2848{
2849 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2850 driver_dump->trace_entry.hdr.len =
2851 sizeof(struct ipr_dump_trace_entry) -
2852 sizeof(struct ipr_dump_entry_header);
2853 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2854 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2855 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2856 driver_dump->hdr.num_entries++;
2857}
2858
2859/**
2860 * ipr_dump_location_data - Fill in the IOA location in the dump.
2861 * @ioa_cfg: ioa config struct
2862 * @driver_dump: driver dump struct
2863 *
2864 * Return value:
2865 * nothing
2866 **/
2867static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2868 struct ipr_driver_dump *driver_dump)
2869{
2870 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2871 driver_dump->location_entry.hdr.len =
2872 sizeof(struct ipr_dump_location_entry) -
2873 sizeof(struct ipr_dump_entry_header);
2874 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2875 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
71610f55 2876 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
1da177e4
LT		 2877 driver_dump->hdr.num_entries++;
2878}
2879
2880/**
2881 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2882 * @ioa_cfg: ioa config struct
2883 * @dump: dump struct
2884 *
2885 * Return value:
2886 * nothing
2887 **/
2888static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2889{
2890 unsigned long start_addr, sdt_word;
2891 unsigned long lock_flags = 0;
2892 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2893 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
4d4dd706
KSS		 2894 u32 num_entries, max_num_entries, start_off, end_off;
2895 u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
1da177e4 2896 struct ipr_sdt *sdt;
dcbad00e 2897 int valid = 1;
1da177e4
LT		 2898 int i;
2899
2900 ENTER;
2901
2902 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2903
41e9a696 2904 if (ioa_cfg->sdt_state != READ_DUMP) {
1da177e4
LT		 2905 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2906 return;
2907 }
2908
110def85
WB		 2909 if (ioa_cfg->sis64) {
2910 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2911 ssleep(IPR_DUMP_DELAY_SECONDS);
2912 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2913 }
2914
1da177e4
LT		 2915 start_addr = readl(ioa_cfg->ioa_mailbox);
2916
dcbad00e 2917 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
1da177e4
LT		 2918 dev_err(&ioa_cfg->pdev->dev,
2919 "Invalid dump table format: %lx\n", start_addr);
2920 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2921 return;
2922 }
2923
2924 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2925
2926 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2927
2928 /* Initialize the overall dump header */
2929 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2930 driver_dump->hdr.num_entries = 1;
2931 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2932 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2933 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2934 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2935
2936 ipr_dump_version_data(ioa_cfg, driver_dump);
2937 ipr_dump_location_data(ioa_cfg, driver_dump);
2938 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2939 ipr_dump_trace_data(ioa_cfg, driver_dump);
2940
2941 /* Update dump_header */
2942 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2943
2944 /* IOA Dump entry */
2945 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
1da177e4
LT		 2946 ioa_dump->hdr.len = 0;
2947 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2948 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2949
2950 /* First entries in sdt are actually a list of dump addresses and
2951 lengths to gather the real dump data. sdt represents the pointer
2952 to the ioa generated dump table. Dump data will be extracted based
2953 on entries in this table */
2954 sdt = &ioa_dump->sdt;
2955
4d4dd706
KSS		 2956 if (ioa_cfg->sis64) {
2957 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
2958 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2959 } else {
2960 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
2961 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2962 }
2963
2964 bytes_to_copy = offsetof(struct ipr_sdt, entry) +
2965 (max_num_entries * sizeof(struct ipr_sdt_entry));
1da177e4 2966 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
4d4dd706 2967 bytes_to_copy / sizeof(__be32));
1da177e4
LT		 2968
2969 /* Smart Dump table is ready to use and the first entry is valid */
dcbad00e
WB		 2970 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
2971 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
1da177e4
LT		 2972 dev_err(&ioa_cfg->pdev->dev,
2973 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2974 rc, be32_to_cpu(sdt->hdr.state));
2975 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2976 ioa_cfg->sdt_state = DUMP_OBTAINED;
2977 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2978 return;
2979 }
2980
2981 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2982
4d4dd706
KSS		 2983 if (num_entries > max_num_entries)
2984 num_entries = max_num_entries;
2985
2986 /* Update dump length to the actual data to be copied */
2987 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
2988 if (ioa_cfg->sis64)
2989 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
2990 else
2991 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
1da177e4
LT		 2992
2993 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2994
2995 for (i = 0; i < num_entries; i++) {
4d4dd706 2996 if (ioa_dump->hdr.len > max_dump_size) {
1da177e4
LT		 2997 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2998 break;
2999 }
3000
3001 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
dcbad00e
WB		 3002 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3003 if (ioa_cfg->sis64)
3004 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3005 else {
3006 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3007 end_off = be32_to_cpu(sdt->entry[i].end_token);
3008
3009 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3010 bytes_to_copy = end_off - start_off;
3011 else
3012 valid = 0;
3013 }
3014 if (valid) {
4d4dd706 3015 if (bytes_to_copy > max_dump_size) {
1da177e4
LT		 3016 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3017 continue;
3018 }
3019
3020 /* Copy data from adapter to driver buffers */
3021 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3022 bytes_to_copy);
3023
3024 ioa_dump->hdr.len += bytes_copied;
3025
3026 if (bytes_copied != bytes_to_copy) {
3027 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3028 break;
3029 }
3030 }
3031 }
3032 }
3033
3034 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3035
3036 /* Update dump_header */
3037 driver_dump->hdr.len += ioa_dump->hdr.len;
3038 wmb();
3039 ioa_cfg->sdt_state = DUMP_OBTAINED;
3040 LEAVE;
3041}
3042
3043#else
3044#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
3045#endif
3046
3047/**
3048 * ipr_release_dump - Free adapter dump memory
3049 * @kref: kref struct
3050 *
3051 * Return value:
3052 * nothing
3053 **/
3054static void ipr_release_dump(struct kref *kref)
3055{
3056 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
3057 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3058 unsigned long lock_flags = 0;
3059 int i;
3060
3061 ENTER;
3062 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3063 ioa_cfg->dump = NULL;
3064 ioa_cfg->sdt_state = INACTIVE;
3065 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3066
3067 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3068 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3069
4d4dd706 3070 vfree(dump->ioa_dump.ioa_data);
1da177e4
LT		 3071 kfree(dump);
3072 LEAVE;
3073}
3074
3075/**
3076 * ipr_worker_thread - Worker thread
c4028958 3077 * @work: ioa config struct
1da177e4
LT		 3078 *
3079 * Called at task level from a work thread. This function takes care
3080 * of adding and removing device from the mid-layer as configuration
3081 * changes are detected by the adapter.
3082 *
3083 * Return value:
3084 * nothing
3085 **/
c4028958 3086static void ipr_worker_thread(struct work_struct *work)
1da177e4
LT		 3087{
3088 unsigned long lock_flags;
3089 struct ipr_resource_entry *res;
3090 struct scsi_device *sdev;
3091 struct ipr_dump *dump;
c4028958
DH		 3092 struct ipr_ioa_cfg *ioa_cfg =
3093 container_of(work, struct ipr_ioa_cfg, work_q);
1da177e4
LT		 3094 u8 bus, target, lun;
3095 int did_work;
3096
3097 ENTER;
3098 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3099
41e9a696 3100 if (ioa_cfg->sdt_state == READ_DUMP) {
1da177e4
LT		 3101 dump = ioa_cfg->dump;
3102 if (!dump) {
3103 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3104 return;
3105 }
3106 kref_get(&dump->kref);
3107 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3108 ipr_get_ioa_dump(ioa_cfg, dump);
3109 kref_put(&dump->kref, ipr_release_dump);
3110
3111 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3112 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
3113 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3114 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3115 return;
3116 }
3117
3118restart:
3119 do {
3120 did_work = 0;
3121 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
3122 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3123 return;
3124 }
3125
3126 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3127 if (res->del_from_ml && res->sdev) {
3128 did_work = 1;
3129 sdev = res->sdev;
3130 if (!scsi_device_get(sdev)) {
5767a1c4
KSS		 3131 if (!res->add_to_ml)
3132 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3133 else
3134 res->del_from_ml = 0;
1da177e4
LT		 3135 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3136 scsi_remove_device(sdev);
3137 scsi_device_put(sdev);
3138 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3139 }
3140 break;
3141 }
3142 }
3143 } while(did_work);
3144
3145 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3146 if (res->add_to_ml) {
3e7ebdfa
WB		 3147 bus = res->bus;
3148 target = res->target;
3149 lun = res->lun;
1121b794 3150 res->add_to_ml = 0;
1da177e4
LT		 3151 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3152 scsi_add_device(ioa_cfg->host, bus, target, lun);
3153 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3154 goto restart;
3155 }
3156 }
3157
3158 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
ee959b00 3159 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
1da177e4
LT		 3160 LEAVE;
3161}
3162
3163#ifdef CONFIG_SCSI_IPR_TRACE
3164/**
3165 * ipr_read_trace - Dump the adapter trace
2c3c8bea 3166 * @filp: open sysfs file
1da177e4 3167 * @kobj: kobject struct
91a69029 3168 * @bin_attr: bin_attribute struct
1da177e4
LT		 3169 * @buf: buffer
3170 * @off: offset
3171 * @count: buffer size
3172 *
3173 * Return value:
3174 * number of bytes printed to buffer
3175 **/
2c3c8bea 3176static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
91a69029
ZR		 3177 struct bin_attribute *bin_attr,
3178 char *buf, loff_t off, size_t count)
1da177e4 3179{
ee959b00
TJ		 3180 struct device *dev = container_of(kobj, struct device, kobj);
3181 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 3182 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3183 unsigned long lock_flags = 0;
d777aaf3 3184 ssize_t ret;
1da177e4
LT		 3185
3186 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
d777aaf3
AM		 3187 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3188 IPR_TRACE_SIZE);
1da177e4 3189 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
d777aaf3
AM		 3190
3191 return ret;
1da177e4
LT		 3192}
3193
3194static struct bin_attribute ipr_trace_attr = {
3195 .attr = {
3196 .name = "trace",
3197 .mode = S_IRUGO,
3198 },
3199 .size = 0,
3200 .read = ipr_read_trace,
3201};
3202#endif
3203
3204/**
3205 * ipr_show_fw_version - Show the firmware version
ee959b00
TJ		 3206 * @dev: class device struct
3207 * @buf: buffer
1da177e4
LT		 3208 *
3209 * Return value:
3210 * number of bytes printed to buffer
3211 **/
ee959b00
TJ		 3212static ssize_t ipr_show_fw_version(struct device *dev,
3213 struct device_attribute *attr, char *buf)
1da177e4 3214{
ee959b00 3215 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 3216 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3217 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3218 unsigned long lock_flags = 0;
3219 int len;
3220
3221 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3222 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3223 ucode_vpd->major_release, ucode_vpd->card_type,
3224 ucode_vpd->minor_release[0],
3225 ucode_vpd->minor_release[1]);
3226 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3227 return len;
3228}
3229
ee959b00 3230static struct device_attribute ipr_fw_version_attr = {
1da177e4
LT		 3231 .attr = {
3232 .name = "fw_version",
3233 .mode = S_IRUGO,
3234 },
3235 .show = ipr_show_fw_version,
3236};
3237
3238/**
3239 * ipr_show_log_level - Show the adapter's error logging level
ee959b00
TJ		 3240 * @dev: class device struct
3241 * @buf: buffer
1da177e4
LT		 3242 *
3243 * Return value:
3244 * number of bytes printed to buffer
3245 **/
ee959b00
TJ		 3246static ssize_t ipr_show_log_level(struct device *dev,
3247 struct device_attribute *attr, char *buf)
1da177e4 3248{
ee959b00 3249 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 3250 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3251 unsigned long lock_flags = 0;
3252 int len;
3253
3254 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3255 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3256 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3257 return len;
3258}
3259
3260/**
3261 * ipr_store_log_level - Change the adapter's error logging level
ee959b00
TJ		 3262 * @dev: class device struct
3263 * @buf: buffer
1da177e4
LT		 3264 *
3265 * Return value:
3266 * number of bytes printed to buffer
3267 **/
ee959b00
TJ		 3268static ssize_t ipr_store_log_level(struct device *dev,
3269 struct device_attribute *attr,
1da177e4
LT		 3270 const char *buf, size_t count)
3271{
ee959b00 3272 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 3273 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3274 unsigned long lock_flags = 0;
3275
3276 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3277 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3278 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3279 return strlen(buf);
3280}
3281
ee959b00 3282static struct device_attribute ipr_log_level_attr = {
1da177e4
LT		 3283 .attr = {
3284 .name = "log_level",
3285 .mode = S_IRUGO | S_IWUSR,
3286 },
3287 .show = ipr_show_log_level,
3288 .store = ipr_store_log_level
3289};
3290
3291/**
3292 * ipr_store_diagnostics - IOA Diagnostics interface
ee959b00
TJ		 3293 * @dev: device struct
3294 * @buf: buffer
3295 * @count: buffer size
1da177e4
LT		 3296 *
3297 * This function will reset the adapter and wait a reasonable
3298 * amount of time for any errors that the adapter might log.
3299 *
3300 * Return value:
3301 * count on success / other on failure
3302 **/
ee959b00
TJ		 3303static ssize_t ipr_store_diagnostics(struct device *dev,
3304 struct device_attribute *attr,
1da177e4
LT		 3305 const char *buf, size_t count)
3306{
ee959b00 3307 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 3308 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3309 unsigned long lock_flags = 0;
3310 int rc = count;
3311
3312 if (!capable(CAP_SYS_ADMIN))
3313 return -EACCES;
3314
1da177e4 3315 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 3316 while(ioa_cfg->in_reset_reload) {
3317 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3318 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3319 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3320 }
3321
1da177e4
LT		 3322 ioa_cfg->errors_logged = 0;
3323 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3324
3325 if (ioa_cfg->in_reset_reload) {
3326 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3327 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3328
3329 /* Wait for a second for any errors to be logged */
3330 msleep(1000);
3331 } else {
3332 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3333 return -EIO;
3334 }
3335
3336 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3337 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3338 rc = -EIO;
3339 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3340
3341 return rc;
3342}
3343
ee959b00 3344static struct device_attribute ipr_diagnostics_attr = {
1da177e4
LT		 3345 .attr = {
3346 .name = "run_diagnostics",
3347 .mode = S_IWUSR,
3348 },
3349 .store = ipr_store_diagnostics
3350};
3351
f37eb54b
BK		 3352/**
3353 * ipr_show_adapter_state - Show the adapter's state
ee959b00
TJ		 3354 * @class_dev: device struct
3355 * @buf: buffer
f37eb54b
BK		 3356 *
3357 * Return value:
3358 * number of bytes printed to buffer
3359 **/
ee959b00
TJ		 3360static ssize_t ipr_show_adapter_state(struct device *dev,
3361 struct device_attribute *attr, char *buf)
f37eb54b 3362{
ee959b00 3363 struct Scsi_Host *shost = class_to_shost(dev);
f37eb54b
BK		 3364 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3365 unsigned long lock_flags = 0;
3366 int len;
3367
3368 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3369 if (ioa_cfg->ioa_is_dead)
3370 len = snprintf(buf, PAGE_SIZE, "offline\n");
3371 else
3372 len = snprintf(buf, PAGE_SIZE, "online\n");
3373 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3374 return len;
3375}
3376
3377/**
3378 * ipr_store_adapter_state - Change adapter state
ee959b00
TJ		 3379 * @dev: device struct
3380 * @buf: buffer
3381 * @count: buffer size
f37eb54b
BK		 3382 *
3383 * This function will change the adapter's state.
3384 *
3385 * Return value:
3386 * count on success / other on failure
3387 **/
ee959b00
TJ		 3388static ssize_t ipr_store_adapter_state(struct device *dev,
3389 struct device_attribute *attr,
f37eb54b
BK		 3390 const char *buf, size_t count)
3391{
ee959b00 3392 struct Scsi_Host *shost = class_to_shost(dev);
f37eb54b
BK		 3393 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3394 unsigned long lock_flags;
3395 int result = count;
3396
3397 if (!capable(CAP_SYS_ADMIN))
3398 return -EACCES;
3399
3400 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3401 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
3402 ioa_cfg->ioa_is_dead = 0;
3403 ioa_cfg->reset_retries = 0;
3404 ioa_cfg->in_ioa_bringdown = 0;
3405 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3406 }
3407 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3408 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3409
3410 return result;
3411}
3412
ee959b00 3413static struct device_attribute ipr_ioa_state_attr = {
f37eb54b 3414 .attr = {
49dd0961 3415 .name = "online_state",
f37eb54b
BK		 3416 .mode = S_IRUGO | S_IWUSR,
3417 },
3418 .show = ipr_show_adapter_state,
3419 .store = ipr_store_adapter_state
3420};
3421
1da177e4
LT		 3422/**
3423 * ipr_store_reset_adapter - Reset the adapter
ee959b00
TJ		 3424 * @dev: device struct
3425 * @buf: buffer
3426 * @count: buffer size
1da177e4
LT		 3427 *
3428 * This function will reset the adapter.
3429 *
3430 * Return value:
3431 * count on success / other on failure
3432 **/
ee959b00
TJ		 3433static ssize_t ipr_store_reset_adapter(struct device *dev,
3434 struct device_attribute *attr,
1da177e4
LT		 3435 const char *buf, size_t count)
3436{
ee959b00 3437 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 3438 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3439 unsigned long lock_flags;
3440 int result = count;
3441
3442 if (!capable(CAP_SYS_ADMIN))
3443 return -EACCES;
3444
3445 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3446 if (!ioa_cfg->in_reset_reload)
3447 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3448 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3449 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3450
3451 return result;
3452}
3453
ee959b00 3454static struct device_attribute ipr_ioa_reset_attr = {
1da177e4
LT		 3455 .attr = {
3456 .name = "reset_host",
3457 .mode = S_IWUSR,
3458 },
3459 .store = ipr_store_reset_adapter
3460};
3461
3462/**
3463 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3464 * @buf_len: buffer length
3465 *
3466 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3467 * list to use for microcode download
3468 *
3469 * Return value:
3470 * pointer to sglist / NULL on failure
3471 **/
3472static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3473{
3474 int sg_size, order, bsize_elem, num_elem, i, j;
3475 struct ipr_sglist *sglist;
3476 struct scatterlist *scatterlist;
3477 struct page *page;
3478
3479 /* Get the minimum size per scatter/gather element */
3480 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3481
3482 /* Get the actual size per element */
3483 order = get_order(sg_size);
3484
3485 /* Determine the actual number of bytes per element */
3486 bsize_elem = PAGE_SIZE * (1 << order);
3487
3488 /* Determine the actual number of sg entries needed */
3489 if (buf_len % bsize_elem)
3490 num_elem = (buf_len / bsize_elem) + 1;
3491 else
3492 num_elem = buf_len / bsize_elem;
3493
3494 /* Allocate a scatter/gather list for the DMA */
0bc42e35 3495 sglist = kzalloc(sizeof(struct ipr_sglist) +
1da177e4
LT		 3496 (sizeof(struct scatterlist) * (num_elem - 1)),
3497 GFP_KERNEL);
3498
3499 if (sglist == NULL) {
3500 ipr_trace;
3501 return NULL;
3502 }
3503
1da177e4 3504 scatterlist = sglist->scatterlist;
45711f1a 3505 sg_init_table(scatterlist, num_elem);
1da177e4
LT		 3506
3507 sglist->order = order;
3508 sglist->num_sg = num_elem;
3509
3510 /* Allocate a bunch of sg elements */
3511 for (i = 0; i < num_elem; i++) {
3512 page = alloc_pages(GFP_KERNEL, order);
3513 if (!page) {
3514 ipr_trace;
3515
3516 /* Free up what we already allocated */
3517 for (j = i - 1; j >= 0; j--)
45711f1a 3518 __free_pages(sg_page(&scatterlist[j]), order);
1da177e4
LT		 3519 kfree(sglist);
3520 return NULL;
3521 }
3522
642f1490 3523 sg_set_page(&scatterlist[i], page, 0, 0);
1da177e4
LT		 3524 }
3525
3526 return sglist;
3527}
3528
3529/**
3530 * ipr_free_ucode_buffer - Frees a microcode download buffer
3531 * @p_dnld: scatter/gather list pointer
3532 *
3533 * Free a DMA'able ucode download buffer previously allocated with
3534 * ipr_alloc_ucode_buffer
3535 *
3536 * Return value:
3537 * nothing
3538 **/
3539static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3540{
3541 int i;
3542
3543 for (i = 0; i < sglist->num_sg; i++)
45711f1a 3544 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
1da177e4
LT		 3545
3546 kfree(sglist);
3547}
3548
3549/**
3550 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3551 * @sglist: scatter/gather list pointer
3552 * @buffer: buffer pointer
3553 * @len: buffer length
3554 *
3555 * Copy a microcode image from a user buffer into a buffer allocated by
3556 * ipr_alloc_ucode_buffer
3557 *
3558 * Return value:
3559 * 0 on success / other on failure
3560 **/
3561static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3562 u8 *buffer, u32 len)
3563{
3564 int bsize_elem, i, result = 0;
3565 struct scatterlist *scatterlist;
3566 void *kaddr;
3567
3568 /* Determine the actual number of bytes per element */
3569 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3570
3571 scatterlist = sglist->scatterlist;
3572
3573 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
45711f1a
JA		 3574 struct page *page = sg_page(&scatterlist[i]);
3575
3576 kaddr = kmap(page);
1da177e4 3577 memcpy(kaddr, buffer, bsize_elem);
45711f1a 3578 kunmap(page);
1da177e4
LT		 3579
3580 scatterlist[i].length = bsize_elem;
3581
3582 if (result != 0) {
3583 ipr_trace;
3584 return result;
3585 }
3586 }
3587
3588 if (len % bsize_elem) {
45711f1a
JA		 3589 struct page *page = sg_page(&scatterlist[i]);
3590
3591 kaddr = kmap(page);
1da177e4 3592 memcpy(kaddr, buffer, len % bsize_elem);
45711f1a 3593 kunmap(page);
1da177e4
LT		 3594
3595 scatterlist[i].length = len % bsize_elem;
3596 }
3597
3598 sglist->buffer_len = len;
3599 return result;
3600}
3601
a32c055f
WB		 3602/**
3603 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3604 * @ipr_cmd: ipr command struct
3605 * @sglist: scatter/gather list
3606 *
3607 * Builds a microcode download IOA data list (IOADL).
3608 *
3609 **/
3610static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3611 struct ipr_sglist *sglist)
3612{
3613 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3614 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3615 struct scatterlist *scatterlist = sglist->scatterlist;
3616 int i;
3617
3618 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3619 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3620 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3621
3622 ioarcb->ioadl_len =
3623 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3624 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3625 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3626 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3627 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3628 }
3629
3630 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3631}
3632
1da177e4 3633/**
12baa420 3634 * ipr_build_ucode_ioadl - Build a microcode download IOADL
1da177e4
LT		 3635 * @ipr_cmd: ipr command struct
3636 * @sglist: scatter/gather list
1da177e4 3637 *
12baa420 3638 * Builds a microcode download IOA data list (IOADL).
1da177e4 3639 *
1da177e4 3640 **/
12baa420
BK		 3641static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3642 struct ipr_sglist *sglist)
1da177e4 3643{
1da177e4 3644 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
a32c055f 3645 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
1da177e4
LT		 3646 struct scatterlist *scatterlist = sglist->scatterlist;
3647 int i;
3648
12baa420 3649 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
1da177e4 3650 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
a32c055f
WB		 3651 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3652
3653 ioarcb->ioadl_len =
1da177e4
LT		 3654 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3655
3656 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3657 ioadl[i].flags_and_data_len =
3658 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3659 ioadl[i].address =
3660 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3661 }
3662
12baa420
BK		 3663 ioadl[i-1].flags_and_data_len |=
3664 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3665}
3666
3667/**
3668 * ipr_update_ioa_ucode - Update IOA's microcode
3669 * @ioa_cfg: ioa config struct
3670 * @sglist: scatter/gather list
3671 *
3672 * Initiate an adapter reset to update the IOA's microcode
3673 *
3674 * Return value:
3675 * 0 on success / -EIO on failure
3676 **/
3677static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3678 struct ipr_sglist *sglist)
3679{
3680 unsigned long lock_flags;
3681
3682 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 3683 while(ioa_cfg->in_reset_reload) {
3684 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3685 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3686 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3687 }
12baa420
BK		 3688
3689 if (ioa_cfg->ucode_sglist) {
3690 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3691 dev_err(&ioa_cfg->pdev->dev,
3692 "Microcode download already in progress\n");
3693 return -EIO;
1da177e4 3694 }
12baa420
BK		 3695
3696 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3697 sglist->num_sg, DMA_TO_DEVICE);
3698
3699 if (!sglist->num_dma_sg) {
3700 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3701 dev_err(&ioa_cfg->pdev->dev,
3702 "Failed to map microcode download buffer!\n");
1da177e4
LT		 3703 return -EIO;
3704 }
3705
12baa420
BK		 3706 ioa_cfg->ucode_sglist = sglist;
3707 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3708 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3709 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3710
3711 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3712 ioa_cfg->ucode_sglist = NULL;
3713 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1da177e4
LT		 3714 return 0;
3715}
3716
3717/**
3718 * ipr_store_update_fw - Update the firmware on the adapter
ee959b00
TJ		 3719 * @class_dev: device struct
3720 * @buf: buffer
3721 * @count: buffer size
1da177e4
LT		 3722 *
3723 * This function will update the firmware on the adapter.
3724 *
3725 * Return value:
3726 * count on success / other on failure
3727 **/
ee959b00
TJ		 3728static ssize_t ipr_store_update_fw(struct device *dev,
3729 struct device_attribute *attr,
3730 const char *buf, size_t count)
1da177e4 3731{
ee959b00 3732 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 3733 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3734 struct ipr_ucode_image_header *image_hdr;
3735 const struct firmware *fw_entry;
3736 struct ipr_sglist *sglist;
1da177e4
LT		 3737 char fname[100];
3738 char *src;
3739 int len, result, dnld_size;
3740
3741 if (!capable(CAP_SYS_ADMIN))
3742 return -EACCES;
3743
3744 len = snprintf(fname, 99, "%s", buf);
3745 fname[len-1] = '\0';
3746
3747 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3748 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3749 return -EIO;
3750 }
3751
3752 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3753
1da177e4
LT		 3754 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3755 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3756 sglist = ipr_alloc_ucode_buffer(dnld_size);
3757
3758 if (!sglist) {
3759 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3760 release_firmware(fw_entry);
3761 return -ENOMEM;
3762 }
3763
3764 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3765
3766 if (result) {
3767 dev_err(&ioa_cfg->pdev->dev,
3768 "Microcode buffer copy to DMA buffer failed\n");
12baa420 3769 goto out;
1da177e4
LT		 3770 }
3771
14ed9cc7
WB		 3772 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n");
3773
12baa420 3774 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
1da177e4 3775
12baa420
BK		 3776 if (!result)
3777 result = count;
3778out:
1da177e4
LT		 3779 ipr_free_ucode_buffer(sglist);
3780 release_firmware(fw_entry);
12baa420 3781 return result;
1da177e4
LT		 3782}
3783
ee959b00 3784static struct device_attribute ipr_update_fw_attr = {
1da177e4
LT		 3785 .attr = {
3786 .name = "update_fw",
3787 .mode = S_IWUSR,
3788 },
3789 .store = ipr_store_update_fw
3790};
3791
75576bb9
WB		 3792/**
3793 * ipr_show_fw_type - Show the adapter's firmware type.
3794 * @dev: class device struct
3795 * @buf: buffer
3796 *
3797 * Return value:
3798 * number of bytes printed to buffer
3799 **/
3800static ssize_t ipr_show_fw_type(struct device *dev,
3801 struct device_attribute *attr, char *buf)
3802{
3803 struct Scsi_Host *shost = class_to_shost(dev);
3804 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3805 unsigned long lock_flags = 0;
3806 int len;
3807
3808 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3809 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
3810 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3811 return len;
3812}
3813
3814static struct device_attribute ipr_ioa_fw_type_attr = {
3815 .attr = {
3816 .name = "fw_type",
3817 .mode = S_IRUGO,
3818 },
3819 .show = ipr_show_fw_type
3820};
3821
ee959b00 3822static struct device_attribute *ipr_ioa_attrs[] = {
1da177e4
LT		 3823 &ipr_fw_version_attr,
3824 &ipr_log_level_attr,
3825 &ipr_diagnostics_attr,
f37eb54b 3826 &ipr_ioa_state_attr,
1da177e4
LT		 3827 &ipr_ioa_reset_attr,
3828 &ipr_update_fw_attr,
75576bb9 3829 &ipr_ioa_fw_type_attr,
1da177e4
LT		 3830 NULL,
3831};
3832
3833#ifdef CONFIG_SCSI_IPR_DUMP
3834/**
3835 * ipr_read_dump - Dump the adapter
2c3c8bea 3836 * @filp: open sysfs file
1da177e4 3837 * @kobj: kobject struct
91a69029 3838 * @bin_attr: bin_attribute struct
1da177e4
LT		 3839 * @buf: buffer
3840 * @off: offset
3841 * @count: buffer size
3842 *
3843 * Return value:
3844 * number of bytes printed to buffer
3845 **/
2c3c8bea 3846static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
91a69029
ZR		 3847 struct bin_attribute *bin_attr,
3848 char *buf, loff_t off, size_t count)
1da177e4 3849{
ee959b00 3850 struct device *cdev = container_of(kobj, struct device, kobj);
1da177e4
LT		 3851 struct Scsi_Host *shost = class_to_shost(cdev);
3852 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3853 struct ipr_dump *dump;
3854 unsigned long lock_flags = 0;
3855 char *src;
4d4dd706 3856 int len, sdt_end;
1da177e4
LT		 3857 size_t rc = count;
3858
3859 if (!capable(CAP_SYS_ADMIN))
3860 return -EACCES;
3861
3862 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3863 dump = ioa_cfg->dump;
3864
3865 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3866 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3867 return 0;
3868 }
3869 kref_get(&dump->kref);
3870 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3871
3872 if (off > dump->driver_dump.hdr.len) {
3873 kref_put(&dump->kref, ipr_release_dump);
3874 return 0;
3875 }
3876
3877 if (off + count > dump->driver_dump.hdr.len) {
3878 count = dump->driver_dump.hdr.len - off;
3879 rc = count;
3880 }
3881
3882 if (count && off < sizeof(dump->driver_dump)) {
3883 if (off + count > sizeof(dump->driver_dump))
3884 len = sizeof(dump->driver_dump) - off;
3885 else
3886 len = count;
3887 src = (u8 *)&dump->driver_dump + off;
3888 memcpy(buf, src, len);
3889 buf += len;
3890 off += len;
3891 count -= len;
3892 }
3893
3894 off -= sizeof(dump->driver_dump);
3895
4d4dd706
KSS		 3896 if (ioa_cfg->sis64)
3897 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
3898 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
3899 sizeof(struct ipr_sdt_entry));
3900 else
3901 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
3902 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
3903
3904 if (count && off < sdt_end) {
3905 if (off + count > sdt_end)
3906 len = sdt_end - off;
1da177e4
LT		 3907 else
3908 len = count;
3909 src = (u8 *)&dump->ioa_dump + off;
3910 memcpy(buf, src, len);
3911 buf += len;
3912 off += len;
3913 count -= len;
3914 }
3915
4d4dd706 3916 off -= sdt_end;
1da177e4
LT		 3917
3918 while (count) {
3919 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3920 len = PAGE_ALIGN(off) - off;
3921 else
3922 len = count;
3923 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3924 src += off & ~PAGE_MASK;
3925 memcpy(buf, src, len);
3926 buf += len;
3927 off += len;
3928 count -= len;
3929 }
3930
3931 kref_put(&dump->kref, ipr_release_dump);
3932 return rc;
3933}
3934
3935/**
3936 * ipr_alloc_dump - Prepare for adapter dump
3937 * @ioa_cfg: ioa config struct
3938 *
3939 * Return value:
3940 * 0 on success / other on failure
3941 **/
3942static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3943{
3944 struct ipr_dump *dump;
4d4dd706 3945 __be32 **ioa_data;
1da177e4
LT		 3946 unsigned long lock_flags = 0;
3947
0bc42e35 3948 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
1da177e4
LT		 3949
3950 if (!dump) {
3951 ipr_err("Dump memory allocation failed\n");
3952 return -ENOMEM;
3953 }
3954
4d4dd706
KSS		 3955 if (ioa_cfg->sis64)
3956 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
3957 else
3958 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
3959
3960 if (!ioa_data) {
3961 ipr_err("Dump memory allocation failed\n");
3962 kfree(dump);
3963 return -ENOMEM;
3964 }
3965
3966 dump->ioa_dump.ioa_data = ioa_data;
3967
1da177e4
LT		 3968 kref_init(&dump->kref);
3969 dump->ioa_cfg = ioa_cfg;
3970
3971 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3972
3973 if (INACTIVE != ioa_cfg->sdt_state) {
3974 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4d4dd706 3975 vfree(dump->ioa_dump.ioa_data);
1da177e4
LT		 3976 kfree(dump);
3977 return 0;
3978 }
3979
3980 ioa_cfg->dump = dump;
3981 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3982 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3983 ioa_cfg->dump_taken = 1;
3984 schedule_work(&ioa_cfg->work_q);
3985 }
3986 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3987
1da177e4
LT		 3988 return 0;
3989}
3990
3991/**
3992 * ipr_free_dump - Free adapter dump memory
3993 * @ioa_cfg: ioa config struct
3994 *
3995 * Return value:
3996 * 0 on success / other on failure
3997 **/
3998static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3999{
4000 struct ipr_dump *dump;
4001 unsigned long lock_flags = 0;
4002
4003 ENTER;
4004
4005 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4006 dump = ioa_cfg->dump;
4007 if (!dump) {
4008 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4009 return 0;
4010 }
4011
4012 ioa_cfg->dump = NULL;
4013 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4014
4015 kref_put(&dump->kref, ipr_release_dump);
4016
4017 LEAVE;
4018 return 0;
4019}
4020
4021/**
4022 * ipr_write_dump - Setup dump state of adapter
2c3c8bea 4023 * @filp: open sysfs file
1da177e4 4024 * @kobj: kobject struct
91a69029 4025 * @bin_attr: bin_attribute struct
1da177e4
LT		 4026 * @buf: buffer
4027 * @off: offset
4028 * @count: buffer size
4029 *
4030 * Return value:
4031 * number of bytes printed to buffer
4032 **/
2c3c8bea 4033static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
91a69029
ZR		 4034 struct bin_attribute *bin_attr,
4035 char *buf, loff_t off, size_t count)
1da177e4 4036{
ee959b00 4037 struct device *cdev = container_of(kobj, struct device, kobj);
1da177e4
LT		 4038 struct Scsi_Host *shost = class_to_shost(cdev);
4039 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4040 int rc;
4041
4042 if (!capable(CAP_SYS_ADMIN))
4043 return -EACCES;
4044
4045 if (buf[0] == '1')
4046 rc = ipr_alloc_dump(ioa_cfg);
4047 else if (buf[0] == '0')
4048 rc = ipr_free_dump(ioa_cfg);
4049 else
4050 return -EINVAL;
4051
4052 if (rc)
4053 return rc;
4054 else
4055 return count;
4056}
4057
4058static struct bin_attribute ipr_dump_attr = {
4059 .attr = {
4060 .name = "dump",
4061 .mode = S_IRUSR | S_IWUSR,
4062 },
4063 .size = 0,
4064 .read = ipr_read_dump,
4065 .write = ipr_write_dump
4066};
4067#else
4068static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4069#endif
4070
4071/**
4072 * ipr_change_queue_depth - Change the device's queue depth
4073 * @sdev: scsi device struct
4074 * @qdepth: depth to set
e881a172 4075 * @reason: calling context
1da177e4
LT		 4076 *
4077 * Return value:
4078 * actual depth set
4079 **/
e881a172
MC		 4080static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth,
4081 int reason)
1da177e4 4082{
35a39691
BK		 4083 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4084 struct ipr_resource_entry *res;
4085 unsigned long lock_flags = 0;
4086
e881a172
MC		 4087 if (reason != SCSI_QDEPTH_DEFAULT)
4088 return -EOPNOTSUPP;
4089
35a39691
BK		 4090 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4091 res = (struct ipr_resource_entry *)sdev->hostdata;
4092
4093 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4094 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4095 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4096
1da177e4
LT		 4097 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
4098 return sdev->queue_depth;
4099}
4100
4101/**
4102 * ipr_change_queue_type - Change the device's queue type
4103 * @dsev: scsi device struct
4104 * @tag_type: type of tags to use
4105 *
4106 * Return value:
4107 * actual queue type set
4108 **/
4109static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
4110{
4111 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4112 struct ipr_resource_entry *res;
4113 unsigned long lock_flags = 0;
4114
4115 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4116 res = (struct ipr_resource_entry *)sdev->hostdata;
4117
4118 if (res) {
4119 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
4120 /*
4121 * We don't bother quiescing the device here since the
4122 * adapter firmware does it for us.
4123 */
4124 scsi_set_tag_type(sdev, tag_type);
4125
4126 if (tag_type)
4127 scsi_activate_tcq(sdev, sdev->queue_depth);
4128 else
4129 scsi_deactivate_tcq(sdev, sdev->queue_depth);
4130 } else
4131 tag_type = 0;
4132 } else
4133 tag_type = 0;
4134
4135 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4136 return tag_type;
4137}
4138
4139/**
4140 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4141 * @dev: device struct
46d74563 4142 * @attr: device attribute structure
1da177e4
LT		 4143 * @buf: buffer
4144 *
4145 * Return value:
4146 * number of bytes printed to buffer
4147 **/
10523b3b 4148static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 4149{
4150 struct scsi_device *sdev = to_scsi_device(dev);
4151 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4152 struct ipr_resource_entry *res;
4153 unsigned long lock_flags = 0;
4154 ssize_t len = -ENXIO;
4155
4156 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4157 res = (struct ipr_resource_entry *)sdev->hostdata;
4158 if (res)
3e7ebdfa 4159 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
1da177e4
LT		 4160 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4161 return len;
4162}
4163
4164static struct device_attribute ipr_adapter_handle_attr = {
4165 .attr = {
4166 .name = "adapter_handle",
4167 .mode = S_IRUSR,
4168 },
4169 .show = ipr_show_adapter_handle
4170};
4171
3e7ebdfa 4172/**
5adcbeb3
WB		 4173 * ipr_show_resource_path - Show the resource path or the resource address for
4174 * this device.
3e7ebdfa 4175 * @dev: device struct
46d74563 4176 * @attr: device attribute structure
3e7ebdfa
WB		 4177 * @buf: buffer
4178 *
4179 * Return value:
4180 * number of bytes printed to buffer
4181 **/
4182static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4183{
4184 struct scsi_device *sdev = to_scsi_device(dev);
4185 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4186 struct ipr_resource_entry *res;
4187 unsigned long lock_flags = 0;
4188 ssize_t len = -ENXIO;
4189 char buffer[IPR_MAX_RES_PATH_LENGTH];
4190
4191 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4192 res = (struct ipr_resource_entry *)sdev->hostdata;
5adcbeb3 4193 if (res && ioa_cfg->sis64)
3e7ebdfa 4194 len = snprintf(buf, PAGE_SIZE, "%s\n",
5adcbeb3
WB		 4195 ipr_format_res_path(res->res_path, buffer,
4196 sizeof(buffer)));
4197 else if (res)
4198 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4199 res->bus, res->target, res->lun);
4200
3e7ebdfa
WB		 4201 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4202 return len;
4203}
4204
4205static struct device_attribute ipr_resource_path_attr = {
4206 .attr = {
4207 .name = "resource_path",
75576bb9 4208 .mode = S_IRUGO,
3e7ebdfa
WB		 4209 },
4210 .show = ipr_show_resource_path
4211};
4212
46d74563
WB		 4213/**
4214 * ipr_show_device_id - Show the device_id for this device.
4215 * @dev: device struct
4216 * @attr: device attribute structure
4217 * @buf: buffer
4218 *
4219 * Return value:
4220 * number of bytes printed to buffer
4221 **/
4222static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4223{
4224 struct scsi_device *sdev = to_scsi_device(dev);
4225 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4226 struct ipr_resource_entry *res;
4227 unsigned long lock_flags = 0;
4228 ssize_t len = -ENXIO;
4229
4230 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4231 res = (struct ipr_resource_entry *)sdev->hostdata;
4232 if (res && ioa_cfg->sis64)
4233 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->dev_id);
4234 else if (res)
4235 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4236
4237 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4238 return len;
4239}
4240
4241static struct device_attribute ipr_device_id_attr = {
4242 .attr = {
4243 .name = "device_id",
4244 .mode = S_IRUGO,
4245 },
4246 .show = ipr_show_device_id
4247};
4248
75576bb9
WB		 4249/**
4250 * ipr_show_resource_type - Show the resource type for this device.
4251 * @dev: device struct
46d74563 4252 * @attr: device attribute structure
75576bb9
WB		 4253 * @buf: buffer
4254 *
4255 * Return value:
4256 * number of bytes printed to buffer
4257 **/
4258static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4259{
4260 struct scsi_device *sdev = to_scsi_device(dev);
4261 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4262 struct ipr_resource_entry *res;
4263 unsigned long lock_flags = 0;
4264 ssize_t len = -ENXIO;
4265
4266 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4267 res = (struct ipr_resource_entry *)sdev->hostdata;
4268
4269 if (res)
4270 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4271
4272 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4273 return len;
4274}
4275
4276static struct device_attribute ipr_resource_type_attr = {
4277 .attr = {
4278 .name = "resource_type",
4279 .mode = S_IRUGO,
4280 },
4281 .show = ipr_show_resource_type
4282};
4283
1da177e4
LT		 4284static struct device_attribute *ipr_dev_attrs[] = {
4285 &ipr_adapter_handle_attr,
3e7ebdfa 4286 &ipr_resource_path_attr,
46d74563 4287 &ipr_device_id_attr,
75576bb9 4288 &ipr_resource_type_attr,
1da177e4
LT		 4289 NULL,
4290};
4291
4292/**
4293 * ipr_biosparam - Return the HSC mapping
4294 * @sdev: scsi device struct
4295 * @block_device: block device pointer
4296 * @capacity: capacity of the device
4297 * @parm: Array containing returned HSC values.
4298 *
4299 * This function generates the HSC parms that fdisk uses.
4300 * We want to make sure we return something that places partitions
4301 * on 4k boundaries for best performance with the IOA.
4302 *
4303 * Return value:
4304 * 0 on success
4305 **/
4306static int ipr_biosparam(struct scsi_device *sdev,
4307 struct block_device *block_device,
4308 sector_t capacity, int *parm)
4309{
4310 int heads, sectors;
4311 sector_t cylinders;
4312
4313 heads = 128;
4314 sectors = 32;
4315
4316 cylinders = capacity;
4317 sector_div(cylinders, (128 * 32));
4318
4319 /* return result */
4320 parm[0] = heads;
4321 parm[1] = sectors;
4322 parm[2] = cylinders;
4323
4324 return 0;
4325}
4326
35a39691
BK		 4327/**
4328 * ipr_find_starget - Find target based on bus/target.
4329 * @starget: scsi target struct
4330 *
4331 * Return value:
4332 * resource entry pointer if found / NULL if not found
4333 **/
4334static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4335{
4336 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4337 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4338 struct ipr_resource_entry *res;
4339
4340 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3e7ebdfa
WB		 4341 if ((res->bus == starget->channel) &&
4342 (res->target == starget->id) &&
4343 (res->lun == 0)) {
35a39691
BK		 4344 return res;
4345 }
4346 }
4347
4348 return NULL;
4349}
4350
4351static struct ata_port_info sata_port_info;
4352
4353/**
4354 * ipr_target_alloc - Prepare for commands to a SCSI target
4355 * @starget: scsi target struct
4356 *
4357 * If the device is a SATA device, this function allocates an
4358 * ATA port with libata, else it does nothing.
4359 *
4360 * Return value:
4361 * 0 on success / non-0 on failure
4362 **/
4363static int ipr_target_alloc(struct scsi_target *starget)
4364{
4365 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4366 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4367 struct ipr_sata_port *sata_port;
4368 struct ata_port *ap;
4369 struct ipr_resource_entry *res;
4370 unsigned long lock_flags;
4371
4372 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4373 res = ipr_find_starget(starget);
4374 starget->hostdata = NULL;
4375
4376 if (res && ipr_is_gata(res)) {
4377 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4378 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4379 if (!sata_port)
4380 return -ENOMEM;
4381
4382 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4383 if (ap) {
4384 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4385 sata_port->ioa_cfg = ioa_cfg;
4386 sata_port->ap = ap;
4387 sata_port->res = res;
4388
4389 res->sata_port = sata_port;
4390 ap->private_data = sata_port;
4391 starget->hostdata = sata_port;
4392 } else {
4393 kfree(sata_port);
4394 return -ENOMEM;
4395 }
4396 }
4397 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4398
4399 return 0;
4400}
4401
4402/**
4403 * ipr_target_destroy - Destroy a SCSI target
4404 * @starget: scsi target struct
4405 *
4406 * If the device was a SATA device, this function frees the libata
4407 * ATA port, else it does nothing.
4408 *
4409 **/
4410static void ipr_target_destroy(struct scsi_target *starget)
4411{
4412 struct ipr_sata_port *sata_port = starget->hostdata;
3e7ebdfa
WB		 4413 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4414 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4415
4416 if (ioa_cfg->sis64) {
4417 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4418 clear_bit(starget->id, ioa_cfg->array_ids);
4419 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4420 clear_bit(starget->id, ioa_cfg->vset_ids);
4421 else if (starget->channel == 0)
4422 clear_bit(starget->id, ioa_cfg->target_ids);
4423 }
35a39691
BK		 4424
4425 if (sata_port) {
4426 starget->hostdata = NULL;
4427 ata_sas_port_destroy(sata_port->ap);
4428 kfree(sata_port);
4429 }
4430}
4431
4432/**
4433 * ipr_find_sdev - Find device based on bus/target/lun.
4434 * @sdev: scsi device struct
4435 *
4436 * Return value:
4437 * resource entry pointer if found / NULL if not found
4438 **/
4439static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4440{
4441 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4442 struct ipr_resource_entry *res;
4443
4444 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3e7ebdfa
WB		 4445 if ((res->bus == sdev->channel) &&
4446 (res->target == sdev->id) &&
4447 (res->lun == sdev->lun))
35a39691
BK		 4448 return res;
4449 }
4450
4451 return NULL;
4452}
4453
1da177e4
LT		 4454/**
4455 * ipr_slave_destroy - Unconfigure a SCSI device
4456 * @sdev: scsi device struct
4457 *
4458 * Return value:
4459 * nothing
4460 **/
4461static void ipr_slave_destroy(struct scsi_device *sdev)
4462{
4463 struct ipr_resource_entry *res;
4464 struct ipr_ioa_cfg *ioa_cfg;
4465 unsigned long lock_flags = 0;
4466
4467 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4468
4469 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4470 res = (struct ipr_resource_entry *) sdev->hostdata;
4471 if (res) {
35a39691 4472 if (res->sata_port)
3e4ec344 4473 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
1da177e4
LT		 4474 sdev->hostdata = NULL;
4475 res->sdev = NULL;
35a39691 4476 res->sata_port = NULL;
1da177e4
LT		 4477 }
4478 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4479}
4480
4481/**
4482 * ipr_slave_configure - Configure a SCSI device
4483 * @sdev: scsi device struct
4484 *
4485 * This function configures the specified scsi device.
4486 *
4487 * Return value:
4488 * 0 on success
4489 **/
4490static int ipr_slave_configure(struct scsi_device *sdev)
4491{
4492 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4493 struct ipr_resource_entry *res;
dd406ef8 4494 struct ata_port *ap = NULL;
1da177e4 4495 unsigned long lock_flags = 0;
3e7ebdfa 4496 char buffer[IPR_MAX_RES_PATH_LENGTH];
1da177e4
LT		 4497
4498 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4499 res = sdev->hostdata;
4500 if (res) {
4501 if (ipr_is_af_dasd_device(res))
4502 sdev->type = TYPE_RAID;
0726ce26 4503 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
1da177e4 4504 sdev->scsi_level = 4;
0726ce26
BK		 4505 sdev->no_uld_attach = 1;
4506 }
1da177e4 4507 if (ipr_is_vset_device(res)) {
242f9dcb
JA		 4508 blk_queue_rq_timeout(sdev->request_queue,
4509 IPR_VSET_RW_TIMEOUT);
086fa5ff 4510 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
1da177e4 4511 }
dd406ef8
BK		 4512 if (ipr_is_gata(res) && res->sata_port)
4513 ap = res->sata_port->ap;
4514 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4515
4516 if (ap) {
35a39691 4517 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
dd406ef8
BK		 4518 ata_sas_slave_configure(sdev, ap);
4519 } else
35a39691 4520 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3e7ebdfa
WB		 4521 if (ioa_cfg->sis64)
4522 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
5adcbeb3
WB		 4523 ipr_format_res_path(res->res_path, buffer,
4524 sizeof(buffer)));
dd406ef8 4525 return 0;
1da177e4
LT		 4526 }
4527 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4528 return 0;
4529}
4530
35a39691
BK		 4531/**
4532 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4533 * @sdev: scsi device struct
4534 *
4535 * This function initializes an ATA port so that future commands
4536 * sent through queuecommand will work.
4537 *
4538 * Return value:
4539 * 0 on success
4540 **/
4541static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4542{
4543 struct ipr_sata_port *sata_port = NULL;
4544 int rc = -ENXIO;
4545
4546 ENTER;
4547 if (sdev->sdev_target)
4548 sata_port = sdev->sdev_target->hostdata;
4549 if (sata_port)
4550 rc = ata_sas_port_init(sata_port->ap);
4551 if (rc)
4552 ipr_slave_destroy(sdev);
4553
4554 LEAVE;
4555 return rc;
4556}
4557
1da177e4
LT		 4558/**
4559 * ipr_slave_alloc - Prepare for commands to a device.
4560 * @sdev: scsi device struct
4561 *
4562 * This function saves a pointer to the resource entry
4563 * in the scsi device struct if the device exists. We
4564 * can then use this pointer in ipr_queuecommand when
4565 * handling new commands.
4566 *
4567 * Return value:
692aebfc 4568 * 0 on success / -ENXIO if device does not exist
1da177e4
LT		 4569 **/
4570static int ipr_slave_alloc(struct scsi_device *sdev)
4571{
4572 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4573 struct ipr_resource_entry *res;
4574 unsigned long lock_flags;
692aebfc 4575 int rc = -ENXIO;
1da177e4
LT		 4576
4577 sdev->hostdata = NULL;
4578
4579 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4580
35a39691
BK		 4581 res = ipr_find_sdev(sdev);
4582 if (res) {
4583 res->sdev = sdev;
4584 res->add_to_ml = 0;
4585 res->in_erp = 0;
4586 sdev->hostdata = res;
4587 if (!ipr_is_naca_model(res))
4588 res->needs_sync_complete = 1;
4589 rc = 0;
4590 if (ipr_is_gata(res)) {
4591 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4592 return ipr_ata_slave_alloc(sdev);
1da177e4
LT		 4593 }
4594 }
4595
4596 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4597
692aebfc 4598 return rc;
1da177e4
LT		 4599}
4600
4601/**
4602 * ipr_eh_host_reset - Reset the host adapter
4603 * @scsi_cmd: scsi command struct
4604 *
4605 * Return value:
4606 * SUCCESS / FAILED
4607 **/
df0ae249 4608static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 4609{
4610 struct ipr_ioa_cfg *ioa_cfg;
4611 int rc;
4612
4613 ENTER;
4614 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4615
4616 dev_err(&ioa_cfg->pdev->dev,
4617 "Adapter being reset as a result of error recovery.\n");
4618
4619 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4620 ioa_cfg->sdt_state = GET_DUMP;
4621
4622 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4623
4624 LEAVE;
4625 return rc;
4626}
4627
df0ae249
JG		 4628static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
4629{
4630 int rc;
4631
4632 spin_lock_irq(cmd->device->host->host_lock);
4633 rc = __ipr_eh_host_reset(cmd);
4634 spin_unlock_irq(cmd->device->host->host_lock);
4635
4636 return rc;
4637}
4638
c6513096
BK		 4639/**
4640 * ipr_device_reset - Reset the device
4641 * @ioa_cfg: ioa config struct
4642 * @res: resource entry struct
4643 *
4644 * This function issues a device reset to the affected device.
4645 * If the device is a SCSI device, a LUN reset will be sent
4646 * to the device first. If that does not work, a target reset
35a39691
BK		 4647 * will be sent. If the device is a SATA device, a PHY reset will
4648 * be sent.
c6513096
BK		 4649 *
4650 * Return value:
4651 * 0 on success / non-zero on failure
4652 **/
4653static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
4654 struct ipr_resource_entry *res)
4655{
4656 struct ipr_cmnd *ipr_cmd;
4657 struct ipr_ioarcb *ioarcb;
4658 struct ipr_cmd_pkt *cmd_pkt;
35a39691 4659 struct ipr_ioarcb_ata_regs *regs;
c6513096
BK		 4660 u32 ioasc;
4661
4662 ENTER;
4663 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4664 ioarcb = &ipr_cmd->ioarcb;
4665 cmd_pkt = &ioarcb->cmd_pkt;
a32c055f
WB		 4666
4667 if (ipr_cmd->ioa_cfg->sis64) {
4668 regs = &ipr_cmd->i.ata_ioadl.regs;
4669 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
4670 } else
4671 regs = &ioarcb->u.add_data.u.regs;
c6513096 4672
3e7ebdfa 4673 ioarcb->res_handle = res->res_handle;
c6513096
BK		 4674 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4675 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
35a39691
BK		 4676 if (ipr_is_gata(res)) {
4677 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
a32c055f 4678 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
35a39691
BK		 4679 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
4680 }
c6513096
BK		 4681
4682 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
96d21f00 4683 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
c6513096 4684 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
96d21f00
WB		 4685 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
4686 if (ipr_cmd->ioa_cfg->sis64)
4687 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
4688 sizeof(struct ipr_ioasa_gata));
4689 else
4690 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
4691 sizeof(struct ipr_ioasa_gata));
4692 }
c6513096
BK		 4693
4694 LEAVE;
4695 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
4696}
4697
35a39691
BK		 4698/**
4699 * ipr_sata_reset - Reset the SATA port
cc0680a5 4700 * @link: SATA link to reset
35a39691
BK		 4701 * @classes: class of the attached device
4702 *
cc0680a5 4703 * This function issues a SATA phy reset to the affected ATA link.
35a39691
BK		 4704 *
4705 * Return value:
4706 * 0 on success / non-zero on failure
4707 **/
cc0680a5 4708static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
120bda35 4709 unsigned long deadline)
35a39691 4710{
cc0680a5 4711 struct ipr_sata_port *sata_port = link->ap->private_data;
35a39691
BK		 4712 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4713 struct ipr_resource_entry *res;
4714 unsigned long lock_flags = 0;
4715 int rc = -ENXIO;
4716
4717 ENTER;
4718 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
73d98ff0
BK		 4719 while(ioa_cfg->in_reset_reload) {
4720 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4721 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4722 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4723 }
4724
35a39691
BK		 4725 res = sata_port->res;
4726 if (res) {
4727 rc = ipr_device_reset(ioa_cfg, res);
3e7ebdfa 4728 *classes = res->ata_class;
35a39691
BK		 4729 }
4730
4731 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4732 LEAVE;
4733 return rc;
4734}
4735
1da177e4
LT		 4736/**
4737 * ipr_eh_dev_reset - Reset the device
4738 * @scsi_cmd: scsi command struct
4739 *
4740 * This function issues a device reset to the affected device.
4741 * A LUN reset will be sent to the device first. If that does
4742 * not work, a target reset will be sent.
4743 *
4744 * Return value:
4745 * SUCCESS / FAILED
4746 **/
94d0e7b8 4747static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 4748{
4749 struct ipr_cmnd *ipr_cmd;
4750 struct ipr_ioa_cfg *ioa_cfg;
4751 struct ipr_resource_entry *res;
35a39691
BK		 4752 struct ata_port *ap;
4753 int rc = 0;
1da177e4
LT		 4754
4755 ENTER;
4756 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4757 res = scsi_cmd->device->hostdata;
4758
eeb88307 4759 if (!res)
1da177e4
LT		 4760 return FAILED;
4761
4762 /*
4763 * If we are currently going through reset/reload, return failed. This will force the
4764 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
4765 * reset to complete
4766 */
4767 if (ioa_cfg->in_reset_reload)
4768 return FAILED;
4769 if (ioa_cfg->ioa_is_dead)
4770 return FAILED;
4771
4772 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3e7ebdfa 4773 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
1da177e4
LT		 4774 if (ipr_cmd->scsi_cmd)
4775 ipr_cmd->done = ipr_scsi_eh_done;
24d6f2b5
BK		 4776 if (ipr_cmd->qc)
4777 ipr_cmd->done = ipr_sata_eh_done;
7402ecef
BK		 4778 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
4779 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
4780 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
4781 }
1da177e4
LT		 4782 }
4783 }
4784
4785 res->resetting_device = 1;
fb3ed3cb 4786 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
35a39691
BK		 4787
4788 if (ipr_is_gata(res) && res->sata_port) {
4789 ap = res->sata_port->ap;
4790 spin_unlock_irq(scsi_cmd->device->host->host_lock);
a1efdaba 4791 ata_std_error_handler(ap);
35a39691 4792 spin_lock_irq(scsi_cmd->device->host->host_lock);
5af23d26
BK		 4793
4794 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3e7ebdfa 4795 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
5af23d26
BK		 4796 rc = -EIO;
4797 break;
4798 }
4799 }
35a39691
BK		 4800 } else
4801 rc = ipr_device_reset(ioa_cfg, res);
1da177e4
LT		 4802 res->resetting_device = 0;
4803
1da177e4 4804 LEAVE;
c6513096 4805 return (rc ? FAILED : SUCCESS);
1da177e4
LT		 4806}
4807
94d0e7b8
JG		 4808static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
4809{
4810 int rc;
4811
4812 spin_lock_irq(cmd->device->host->host_lock);
4813 rc = __ipr_eh_dev_reset(cmd);
4814 spin_unlock_irq(cmd->device->host->host_lock);
4815
4816 return rc;
4817}
4818
1da177e4
LT		 4819/**
4820 * ipr_bus_reset_done - Op done function for bus reset.
4821 * @ipr_cmd: ipr command struct
4822 *
4823 * This function is the op done function for a bus reset
4824 *
4825 * Return value:
4826 * none
4827 **/
4828static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
4829{
4830 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4831 struct ipr_resource_entry *res;
4832
4833 ENTER;
3e7ebdfa
WB		 4834 if (!ioa_cfg->sis64)
4835 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4836 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
4837 scsi_report_bus_reset(ioa_cfg->host, res->bus);
4838 break;
4839 }
1da177e4 4840 }
1da177e4
LT		 4841
4842 /*
4843 * If abort has not completed, indicate the reset has, else call the
4844 * abort's done function to wake the sleeping eh thread
4845 */
4846 if (ipr_cmd->sibling->sibling)
4847 ipr_cmd->sibling->sibling = NULL;
4848 else
4849 ipr_cmd->sibling->done(ipr_cmd->sibling);
4850
4851 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4852 LEAVE;
4853}
4854
4855/**
4856 * ipr_abort_timeout - An abort task has timed out
4857 * @ipr_cmd: ipr command struct
4858 *
4859 * This function handles when an abort task times out. If this
4860 * happens we issue a bus reset since we have resources tied
4861 * up that must be freed before returning to the midlayer.
4862 *
4863 * Return value:
4864 * none
4865 **/
4866static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4867{
4868 struct ipr_cmnd *reset_cmd;
4869 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4870 struct ipr_cmd_pkt *cmd_pkt;
4871 unsigned long lock_flags = 0;
4872
4873 ENTER;
4874 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4875 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4876 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4877 return;
4878 }
4879
fb3ed3cb 4880 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
1da177e4
LT		 4881 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4882 ipr_cmd->sibling = reset_cmd;
4883 reset_cmd->sibling = ipr_cmd;
4884 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4885 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4886 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4887 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4888 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4889
4890 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4891 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4892 LEAVE;
4893}
4894
4895/**
4896 * ipr_cancel_op - Cancel specified op
4897 * @scsi_cmd: scsi command struct
4898 *
4899 * This function cancels specified op.
4900 *
4901 * Return value:
4902 * SUCCESS / FAILED
4903 **/
4904static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4905{
4906 struct ipr_cmnd *ipr_cmd;
4907 struct ipr_ioa_cfg *ioa_cfg;
4908 struct ipr_resource_entry *res;
4909 struct ipr_cmd_pkt *cmd_pkt;
4910 u32 ioasc;
4911 int op_found = 0;
4912
4913 ENTER;
4914 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4915 res = scsi_cmd->device->hostdata;
4916
8fa728a2
JG		 4917 /* If we are currently going through reset/reload, return failed.
4918 * This will force the mid-layer to call ipr_eh_host_reset,
4919 * which will then go to sleep and wait for the reset to complete
4920 */
4921 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4922 return FAILED;
04d9768f 4923 if (!res || !ipr_is_gscsi(res))
1da177e4
LT		 4924 return FAILED;
4925
4926 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4927 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4928 ipr_cmd->done = ipr_scsi_eh_done;
4929 op_found = 1;
4930 break;
4931 }
4932 }
4933
4934 if (!op_found)
4935 return SUCCESS;
4936
4937 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3e7ebdfa 4938 ipr_cmd->ioarcb.res_handle = res->res_handle;
1da177e4
LT		 4939 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4940 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4941 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4942 ipr_cmd->u.sdev = scsi_cmd->device;
4943
fb3ed3cb
BK		 4944 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4945 scsi_cmd->cmnd[0]);
1da177e4 4946 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
96d21f00 4947 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1da177e4
LT		 4948
4949 /*
4950 * If the abort task timed out and we sent a bus reset, we will get
4951 * one the following responses to the abort
4952 */
4953 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4954 ioasc = 0;
4955 ipr_trace;
4956 }
4957
4958 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
ee0a90fa
BK		 4959 if (!ipr_is_naca_model(res))
4960 res->needs_sync_complete = 1;
1da177e4
LT		 4961
4962 LEAVE;
4963 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4964}
4965
4966/**
4967 * ipr_eh_abort - Abort a single op
4968 * @scsi_cmd: scsi command struct
4969 *
4970 * Return value:
4971 * SUCCESS / FAILED
4972 **/
4973static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4974{
8fa728a2
JG		 4975 unsigned long flags;
4976 int rc;
1da177e4
LT		 4977
4978 ENTER;
1da177e4 4979
8fa728a2
JG		 4980 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4981 rc = ipr_cancel_op(scsi_cmd);
4982 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
1da177e4
LT		 4983
4984 LEAVE;
8fa728a2 4985 return rc;
1da177e4
LT		 4986}
4987
4988/**
4989 * ipr_handle_other_interrupt - Handle "other" interrupts
4990 * @ioa_cfg: ioa config struct
634651fa 4991 * @int_reg: interrupt register
1da177e4
LT		 4992 *
4993 * Return value:
4994 * IRQ_NONE / IRQ_HANDLED
4995 **/
634651fa 4996static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
630ad831 4997 u32 int_reg)
1da177e4
LT		 4998{
4999 irqreturn_t rc = IRQ_HANDLED;
7dacb64f
WB		 5000 u32 int_mask_reg;
5001
5002 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5003 int_reg &= ~int_mask_reg;
5004
5005 /* If an interrupt on the adapter did not occur, ignore it.
5006 * Or in the case of SIS 64, check for a stage change interrupt.
5007 */
5008 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5009 if (ioa_cfg->sis64) {
5010 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5011 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5012 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5013
5014 /* clear stage change */
5015 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5016 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5017 list_del(&ioa_cfg->reset_cmd->queue);
5018 del_timer(&ioa_cfg->reset_cmd->timer);
5019 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5020 return IRQ_HANDLED;
5021 }
5022 }
5023
5024 return IRQ_NONE;
5025 }
1da177e4
LT		 5026
5027 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5028 /* Mask the interrupt */
5029 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5030
5031 /* Clear the interrupt */
5032 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
5033 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5034
5035 list_del(&ioa_cfg->reset_cmd->queue);
5036 del_timer(&ioa_cfg->reset_cmd->timer);
5037 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
7dacb64f
WB		 5038 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5039 if (ipr_debug && printk_ratelimit())
5040 dev_err(&ioa_cfg->pdev->dev,
5041 "Spurious interrupt detected. 0x%08X\n", int_reg);
5042 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5043 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5044 return IRQ_NONE;
1da177e4
LT		 5045 } else {
5046 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5047 ioa_cfg->ioa_unit_checked = 1;
5048 else
5049 dev_err(&ioa_cfg->pdev->dev,
5050 "Permanent IOA failure. 0x%08X\n", int_reg);
5051
5052 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5053 ioa_cfg->sdt_state = GET_DUMP;
5054
5055 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5056 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5057 }
5058
5059 return rc;
5060}
5061
3feeb89d
WB		 5062/**
5063 * ipr_isr_eh - Interrupt service routine error handler
5064 * @ioa_cfg: ioa config struct
5065 * @msg: message to log
5066 *
5067 * Return value:
5068 * none
5069 **/
5070static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg)
5071{
5072 ioa_cfg->errors_logged++;
5073 dev_err(&ioa_cfg->pdev->dev, "%s\n", msg);
5074
5075 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5076 ioa_cfg->sdt_state = GET_DUMP;
5077
5078 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5079}
5080
1da177e4
LT		 5081/**
5082 * ipr_isr - Interrupt service routine
5083 * @irq: irq number
5084 * @devp: pointer to ioa config struct
1da177e4
LT		 5085 *
5086 * Return value:
5087 * IRQ_NONE / IRQ_HANDLED
5088 **/
7d12e780 5089static irqreturn_t ipr_isr(int irq, void *devp)
1da177e4
LT		 5090{
5091 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
5092 unsigned long lock_flags = 0;
7dacb64f 5093 u32 int_reg = 0;
1da177e4
LT		 5094 u32 ioasc;
5095 u16 cmd_index;
3feeb89d 5096 int num_hrrq = 0;
7dacb64f 5097 int irq_none = 0;
1da177e4
LT		 5098 struct ipr_cmnd *ipr_cmd;
5099 irqreturn_t rc = IRQ_NONE;
5100
5101 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5102
5103 /* If interrupts are disabled, ignore the interrupt */
5104 if (!ioa_cfg->allow_interrupts) {
5105 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5106 return IRQ_NONE;
5107 }
5108
1da177e4
LT		 5109 while (1) {
5110 ipr_cmd = NULL;
5111
5112 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5113 ioa_cfg->toggle_bit) {
5114
5115 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
5116 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5117
5118 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
3feeb89d 5119 ipr_isr_eh(ioa_cfg, "Invalid response handle from IOA");
1da177e4
LT		 5120 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5121 return IRQ_HANDLED;
5122 }
5123
5124 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5125
96d21f00 5126 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1da177e4
LT		 5127
5128 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5129
5130 list_del(&ipr_cmd->queue);
5131 del_timer(&ipr_cmd->timer);
5132 ipr_cmd->done(ipr_cmd);
5133
5134 rc = IRQ_HANDLED;
5135
5136 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
5137 ioa_cfg->hrrq_curr++;
5138 } else {
5139 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
5140 ioa_cfg->toggle_bit ^= 1u;
5141 }
5142 }
5143
5144 if (ipr_cmd != NULL) {
5145 /* Clear the PCI interrupt */
a5442ba4 5146 num_hrrq = 0;
3feeb89d 5147 do {
214777ba 5148 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
7dacb64f 5149 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
3feeb89d
WB		 5150 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5151 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5152
7dacb64f
WB		 5153 } else if (rc == IRQ_NONE && irq_none == 0) {
5154 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5155 irq_none++;
a5442ba4
WB		 5156 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5157 int_reg & IPR_PCII_HRRQ_UPDATED) {
5158 ipr_isr_eh(ioa_cfg, "Error clearing HRRQ");
5159 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5160 return IRQ_HANDLED;
1da177e4
LT		 5161 } else
5162 break;
5163 }
5164
5165 if (unlikely(rc == IRQ_NONE))
634651fa 5166 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
1da177e4
LT		 5167
5168 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5169 return rc;
5170}
5171
a32c055f
WB		 5172/**
5173 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5174 * @ioa_cfg: ioa config struct
5175 * @ipr_cmd: ipr command struct
5176 *
5177 * Return value:
5178 * 0 on success / -1 on failure
5179 **/
5180static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5181 struct ipr_cmnd *ipr_cmd)
5182{
5183 int i, nseg;
5184 struct scatterlist *sg;
5185 u32 length;
5186 u32 ioadl_flags = 0;
5187 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5188 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5189 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5190
5191 length = scsi_bufflen(scsi_cmd);
5192 if (!length)
5193 return 0;
5194
5195 nseg = scsi_dma_map(scsi_cmd);
5196 if (nseg < 0) {
51f52a47
AB		 5197 if (printk_ratelimit())
5198 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
a32c055f
WB		 5199 return -1;
5200 }
5201
5202 ipr_cmd->dma_use_sg = nseg;
5203
438b0331 5204 ioarcb->data_transfer_length = cpu_to_be32(length);
b8803b1c
WB		 5205 ioarcb->ioadl_len =
5206 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
438b0331 5207
a32c055f
WB		 5208 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5209 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5210 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5211 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5212 ioadl_flags = IPR_IOADL_FLAGS_READ;
5213
5214 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5215 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5216 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5217 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5218 }
5219
5220 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5221 return 0;
5222}
5223
1da177e4
LT		 5224/**
5225 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5226 * @ioa_cfg: ioa config struct
5227 * @ipr_cmd: ipr command struct
5228 *
5229 * Return value:
5230 * 0 on success / -1 on failure
5231 **/
5232static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5233 struct ipr_cmnd *ipr_cmd)
5234{
63015bc9
FT		 5235 int i, nseg;
5236 struct scatterlist *sg;
1da177e4
LT		 5237 u32 length;
5238 u32 ioadl_flags = 0;
5239 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5240 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
a32c055f 5241 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
1da177e4 5242
63015bc9
FT		 5243 length = scsi_bufflen(scsi_cmd);
5244 if (!length)
1da177e4
LT		 5245 return 0;
5246
63015bc9
FT		 5247 nseg = scsi_dma_map(scsi_cmd);
5248 if (nseg < 0) {
5249 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5250 return -1;
5251 }
51b1c7e1 5252
63015bc9
FT		 5253 ipr_cmd->dma_use_sg = nseg;
5254
5255 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5256 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5257 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
a32c055f
WB		 5258 ioarcb->data_transfer_length = cpu_to_be32(length);
5259 ioarcb->ioadl_len =
63015bc9
FT		 5260 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5261 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5262 ioadl_flags = IPR_IOADL_FLAGS_READ;
5263 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5264 ioarcb->read_ioadl_len =
5265 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5266 }
1da177e4 5267
a32c055f
WB		 5268 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5269 ioadl = ioarcb->u.add_data.u.ioadl;
5270 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5271 offsetof(struct ipr_ioarcb, u.add_data));
63015bc9
FT		 5272 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5273 }
1da177e4 5274
63015bc9
FT		 5275 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5276 ioadl[i].flags_and_data_len =
5277 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5278 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
1da177e4
LT		 5279 }
5280
63015bc9
FT		 5281 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5282 return 0;
1da177e4
LT		 5283}
5284
5285/**
5286 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
5287 * @scsi_cmd: scsi command struct
5288 *
5289 * Return value:
5290 * task attributes
5291 **/
5292static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
5293{
5294 u8 tag[2];
5295 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
5296
5297 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
5298 switch (tag[0]) {
5299 case MSG_SIMPLE_TAG:
5300 rc = IPR_FLAGS_LO_SIMPLE_TASK;
5301 break;
5302 case MSG_HEAD_TAG:
5303 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
5304 break;
5305 case MSG_ORDERED_TAG:
5306 rc = IPR_FLAGS_LO_ORDERED_TASK;
5307 break;
5308 };
5309 }
5310
5311 return rc;
5312}
5313
5314/**
5315 * ipr_erp_done - Process completion of ERP for a device
5316 * @ipr_cmd: ipr command struct
5317 *
5318 * This function copies the sense buffer into the scsi_cmd
5319 * struct and pushes the scsi_done function.
5320 *
5321 * Return value:
5322 * nothing
5323 **/
5324static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5325{
5326 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5327 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5328 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
96d21f00 5329 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1da177e4
LT		 5330
5331 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5332 scsi_cmd->result |= (DID_ERROR << 16);
fb3ed3cb
BK		 5333 scmd_printk(KERN_ERR, scsi_cmd,
5334 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
1da177e4
LT		 5335 } else {
5336 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5337 SCSI_SENSE_BUFFERSIZE);
5338 }
5339
5340 if (res) {
ee0a90fa
BK		 5341 if (!ipr_is_naca_model(res))
5342 res->needs_sync_complete = 1;
1da177e4
LT		 5343 res->in_erp = 0;
5344 }
63015bc9 5345 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 5346 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5347 scsi_cmd->scsi_done(scsi_cmd);
5348}
5349
5350/**
5351 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5352 * @ipr_cmd: ipr command struct
5353 *
5354 * Return value:
5355 * none
5356 **/
5357static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5358{
51b1c7e1 5359 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
96d21f00 5360 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
a32c055f 5361 dma_addr_t dma_addr = ipr_cmd->dma_addr;
1da177e4
LT		 5362
5363 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
a32c055f 5364 ioarcb->data_transfer_length = 0;
1da177e4 5365 ioarcb->read_data_transfer_length = 0;
a32c055f 5366 ioarcb->ioadl_len = 0;
1da177e4 5367 ioarcb->read_ioadl_len = 0;
96d21f00
WB		 5368 ioasa->hdr.ioasc = 0;
5369 ioasa->hdr.residual_data_len = 0;
a32c055f
WB		 5370
5371 if (ipr_cmd->ioa_cfg->sis64)
5372 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5373 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5374 else {
5375 ioarcb->write_ioadl_addr =
5376 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5377 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5378 }
1da177e4
LT		 5379}
5380
5381/**
5382 * ipr_erp_request_sense - Send request sense to a device
5383 * @ipr_cmd: ipr command struct
5384 *
5385 * This function sends a request sense to a device as a result
5386 * of a check condition.
5387 *
5388 * Return value:
5389 * nothing
5390 **/
5391static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5392{
5393 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
96d21f00 5394 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1da177e4
LT		 5395
5396 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5397 ipr_erp_done(ipr_cmd);
5398 return;
5399 }
5400
5401 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5402
5403 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5404 cmd_pkt->cdb[0] = REQUEST_SENSE;
5405 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5406 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5407 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5408 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5409
a32c055f
WB		 5410 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5411 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
1da177e4
LT		 5412
5413 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5414 IPR_REQUEST_SENSE_TIMEOUT * 2);
5415}
5416
5417/**
5418 * ipr_erp_cancel_all - Send cancel all to a device
5419 * @ipr_cmd: ipr command struct
5420 *
5421 * This function sends a cancel all to a device to clear the
5422 * queue. If we are running TCQ on the device, QERR is set to 1,
5423 * which means all outstanding ops have been dropped on the floor.
5424 * Cancel all will return them to us.
5425 *
5426 * Return value:
5427 * nothing
5428 **/
5429static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5430{
5431 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5432 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5433 struct ipr_cmd_pkt *cmd_pkt;
5434
5435 res->in_erp = 1;
5436
5437 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5438
5439 if (!scsi_get_tag_type(scsi_cmd->device)) {
5440 ipr_erp_request_sense(ipr_cmd);
5441 return;
5442 }
5443
5444 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5445 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5446 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5447
5448 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5449 IPR_CANCEL_ALL_TIMEOUT);
5450}
5451
5452/**
5453 * ipr_dump_ioasa - Dump contents of IOASA
5454 * @ioa_cfg: ioa config struct
5455 * @ipr_cmd: ipr command struct
fe964d0a 5456 * @res: resource entry struct
1da177e4
LT		 5457 *
5458 * This function is invoked by the interrupt handler when ops
5459 * fail. It will log the IOASA if appropriate. Only called
5460 * for GPDD ops.
5461 *
5462 * Return value:
5463 * none
5464 **/
5465static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
fe964d0a 5466 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
1da177e4
LT		 5467{
5468 int i;
5469 u16 data_len;
b0692dd4 5470 u32 ioasc, fd_ioasc;
96d21f00 5471 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
1da177e4
LT		 5472 __be32 *ioasa_data = (__be32 *)ioasa;
5473 int error_index;
5474
96d21f00
WB		 5475 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5476 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 5477
5478 if (0 == ioasc)
5479 return;
5480
5481 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
5482 return;
5483
b0692dd4
BK		 5484 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
5485 error_index = ipr_get_error(fd_ioasc);
5486 else
5487 error_index = ipr_get_error(ioasc);
1da177e4
LT		 5488
5489 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
5490 /* Don't log an error if the IOA already logged one */
96d21f00 5491 if (ioasa->hdr.ilid != 0)
1da177e4
LT		 5492 return;
5493
cc9bd5d4
BK		 5494 if (!ipr_is_gscsi(res))
5495 return;
5496
1da177e4
LT		 5497 if (ipr_error_table[error_index].log_ioasa == 0)
5498 return;
5499 }
5500
fe964d0a 5501 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
1da177e4 5502
96d21f00
WB		 5503 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
5504 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
5505 data_len = sizeof(struct ipr_ioasa64);
5506 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
1da177e4 5507 data_len = sizeof(struct ipr_ioasa);
1da177e4
LT		 5508
5509 ipr_err("IOASA Dump:\n");
5510
5511 for (i = 0; i < data_len / 4; i += 4) {
5512 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
5513 be32_to_cpu(ioasa_data[i]),
5514 be32_to_cpu(ioasa_data[i+1]),
5515 be32_to_cpu(ioasa_data[i+2]),
5516 be32_to_cpu(ioasa_data[i+3]));
5517 }
5518}
5519
5520/**
5521 * ipr_gen_sense - Generate SCSI sense data from an IOASA
5522 * @ioasa: IOASA
5523 * @sense_buf: sense data buffer
5524 *
5525 * Return value:
5526 * none
5527 **/
5528static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
5529{
5530 u32 failing_lba;
5531 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
5532 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
96d21f00
WB		 5533 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5534 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
1da177e4
LT		 5535
5536 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
5537
5538 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
5539 return;
5540
5541 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
5542
5543 if (ipr_is_vset_device(res) &&
5544 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
5545 ioasa->u.vset.failing_lba_hi != 0) {
5546 sense_buf[0] = 0x72;
5547 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
5548 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
5549 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
5550
5551 sense_buf[7] = 12;
5552 sense_buf[8] = 0;
5553 sense_buf[9] = 0x0A;
5554 sense_buf[10] = 0x80;
5555
5556 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
5557
5558 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
5559 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
5560 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
5561 sense_buf[15] = failing_lba & 0x000000ff;
5562
5563 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5564
5565 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
5566 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
5567 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
5568 sense_buf[19] = failing_lba & 0x000000ff;
5569 } else {
5570 sense_buf[0] = 0x70;
5571 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
5572 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
5573 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
5574
5575 /* Illegal request */
5576 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
96d21f00 5577 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
1da177e4
LT		 5578 sense_buf[7] = 10; /* additional length */
5579
5580 /* IOARCB was in error */
5581 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
5582 sense_buf[15] = 0xC0;
5583 else /* Parameter data was invalid */
5584 sense_buf[15] = 0x80;
5585
5586 sense_buf[16] =
5587 ((IPR_FIELD_POINTER_MASK &
96d21f00 5588 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
1da177e4
LT		 5589 sense_buf[17] =
5590 (IPR_FIELD_POINTER_MASK &
96d21f00 5591 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
1da177e4
LT		 5592 } else {
5593 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
5594 if (ipr_is_vset_device(res))
5595 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5596 else
5597 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
5598
5599 sense_buf[0] |= 0x80; /* Or in the Valid bit */
5600 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
5601 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
5602 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
5603 sense_buf[6] = failing_lba & 0x000000ff;
5604 }
5605
5606 sense_buf[7] = 6; /* additional length */
5607 }
5608 }
5609}
5610
ee0a90fa
BK		 5611/**
5612 * ipr_get_autosense - Copy autosense data to sense buffer
5613 * @ipr_cmd: ipr command struct
5614 *
5615 * This function copies the autosense buffer to the buffer
5616 * in the scsi_cmd, if there is autosense available.
5617 *
5618 * Return value:
5619 * 1 if autosense was available / 0 if not
5620 **/
5621static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
5622{
96d21f00
WB		 5623 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5624 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
ee0a90fa 5625
96d21f00 5626 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
ee0a90fa
BK		 5627 return 0;
5628
96d21f00
WB		 5629 if (ipr_cmd->ioa_cfg->sis64)
5630 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
5631 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
5632 SCSI_SENSE_BUFFERSIZE));
5633 else
5634 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
5635 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
5636 SCSI_SENSE_BUFFERSIZE));
ee0a90fa
BK		 5637 return 1;
5638}
5639
1da177e4
LT		 5640/**
5641 * ipr_erp_start - Process an error response for a SCSI op
5642 * @ioa_cfg: ioa config struct
5643 * @ipr_cmd: ipr command struct
5644 *
5645 * This function determines whether or not to initiate ERP
5646 * on the affected device.
5647 *
5648 * Return value:
5649 * nothing
5650 **/
5651static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
5652 struct ipr_cmnd *ipr_cmd)
5653{
5654 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5655 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
96d21f00 5656 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
8a048994 5657 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 5658
5659 if (!res) {
5660 ipr_scsi_eh_done(ipr_cmd);
5661 return;
5662 }
5663
8a048994 5664 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
1da177e4
LT		 5665 ipr_gen_sense(ipr_cmd);
5666
cc9bd5d4
BK		 5667 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5668
8a048994 5669 switch (masked_ioasc) {
1da177e4 5670 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
ee0a90fa
BK		 5671 if (ipr_is_naca_model(res))
5672 scsi_cmd->result |= (DID_ABORT << 16);
5673 else
5674 scsi_cmd->result |= (DID_IMM_RETRY << 16);
1da177e4
LT		 5675 break;
5676 case IPR_IOASC_IR_RESOURCE_HANDLE:
b0df54bb 5677 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
1da177e4
LT		 5678 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5679 break;
5680 case IPR_IOASC_HW_SEL_TIMEOUT:
5681 scsi_cmd->result |= (DID_NO_CONNECT << 16);
ee0a90fa
BK		 5682 if (!ipr_is_naca_model(res))
5683 res->needs_sync_complete = 1;
1da177e4
LT		 5684 break;
5685 case IPR_IOASC_SYNC_REQUIRED:
5686 if (!res->in_erp)
5687 res->needs_sync_complete = 1;
5688 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5689 break;
5690 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
b0df54bb 5691 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
1da177e4
LT		 5692 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
5693 break;
5694 case IPR_IOASC_BUS_WAS_RESET:
5695 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
5696 /*
5697 * Report the bus reset and ask for a retry. The device
5698 * will give CC/UA the next command.
5699 */
5700 if (!res->resetting_device)
5701 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
5702 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa
BK		 5703 if (!ipr_is_naca_model(res))
5704 res->needs_sync_complete = 1;
1da177e4
LT		 5705 break;
5706 case IPR_IOASC_HW_DEV_BUS_STATUS:
5707 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
5708 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
ee0a90fa
BK		 5709 if (!ipr_get_autosense(ipr_cmd)) {
5710 if (!ipr_is_naca_model(res)) {
5711 ipr_erp_cancel_all(ipr_cmd);
5712 return;
5713 }
5714 }
1da177e4 5715 }
ee0a90fa
BK		 5716 if (!ipr_is_naca_model(res))
5717 res->needs_sync_complete = 1;
1da177e4
LT		 5718 break;
5719 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
5720 break;
5721 default:
5b7304fb
BK		 5722 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5723 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa 5724 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
1da177e4
LT		 5725 res->needs_sync_complete = 1;
5726 break;
5727 }
5728
63015bc9 5729 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 5730 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5731 scsi_cmd->scsi_done(scsi_cmd);
5732}
5733
5734/**
5735 * ipr_scsi_done - mid-layer done function
5736 * @ipr_cmd: ipr command struct
5737 *
5738 * This function is invoked by the interrupt handler for
5739 * ops generated by the SCSI mid-layer
5740 *
5741 * Return value:
5742 * none
5743 **/
5744static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
5745{
5746 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5747 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
96d21f00 5748 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1da177e4 5749
96d21f00 5750 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
1da177e4
LT		 5751
5752 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
63015bc9 5753 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 5754 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5755 scsi_cmd->scsi_done(scsi_cmd);
5756 } else
5757 ipr_erp_start(ioa_cfg, ipr_cmd);
5758}
5759
1da177e4
LT		 5760/**
5761 * ipr_queuecommand - Queue a mid-layer request
5762 * @scsi_cmd: scsi command struct
5763 * @done: done function
5764 *
5765 * This function queues a request generated by the mid-layer.
5766 *
5767 * Return value:
5768 * 0 on success
5769 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
5770 * SCSI_MLQUEUE_HOST_BUSY if host is busy
5771 **/
f281233d 5772static int ipr_queuecommand_lck(struct scsi_cmnd *scsi_cmd,
1da177e4
LT		 5773 void (*done) (struct scsi_cmnd *))
5774{
5775 struct ipr_ioa_cfg *ioa_cfg;
5776 struct ipr_resource_entry *res;
5777 struct ipr_ioarcb *ioarcb;
5778 struct ipr_cmnd *ipr_cmd;
5779 int rc = 0;
5780
5781 scsi_cmd->scsi_done = done;
5782 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5783 res = scsi_cmd->device->hostdata;
5784 scsi_cmd->result = (DID_OK << 16);
5785
5786 /*
5787 * We are currently blocking all devices due to a host reset
5788 * We have told the host to stop giving us new requests, but
5789 * ERP ops don't count. FIXME
5790 */
5791 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
5792 return SCSI_MLQUEUE_HOST_BUSY;
5793
5794 /*
5795 * FIXME - Create scsi_set_host_offline interface
5796 * and the ioa_is_dead check can be removed
5797 */
5798 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
5799 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
5800 scsi_cmd->result = (DID_NO_CONNECT << 16);
5801 scsi_cmd->scsi_done(scsi_cmd);
5802 return 0;
5803 }
5804
35a39691 5805 if (ipr_is_gata(res) && res->sata_port)
b27dcfb0 5806 return ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
35a39691 5807
1da177e4
LT		 5808 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5809 ioarcb = &ipr_cmd->ioarcb;
5810 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5811
5812 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
5813 ipr_cmd->scsi_cmd = scsi_cmd;
3e7ebdfa 5814 ioarcb->res_handle = res->res_handle;
1da177e4 5815 ipr_cmd->done = ipr_scsi_done;
3e7ebdfa 5816 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
1da177e4
LT		 5817
5818 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
5819 if (scsi_cmd->underflow == 0)
5820 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5821
5822 if (res->needs_sync_complete) {
5823 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
5824 res->needs_sync_complete = 0;
5825 }
5826
5827 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
ab6c10b1
WB		 5828 if (ipr_is_gscsi(res))
5829 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
1da177e4
LT		 5830 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
5831 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
5832 }
5833
5834 if (scsi_cmd->cmnd[0] >= 0xC0 &&
5835 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
5836 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5837
a32c055f
WB		 5838 if (likely(rc == 0)) {
5839 if (ioa_cfg->sis64)
5840 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
5841 else
5842 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
5843 }
1da177e4
LT		 5844
5845 if (likely(rc == 0)) {
5846 mb();
a32c055f 5847 ipr_send_command(ipr_cmd);
1da177e4
LT		 5848 } else {
5849 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5850 return SCSI_MLQUEUE_HOST_BUSY;
5851 }
5852
5853 return 0;
5854}
5855
f281233d
JG		 5856static DEF_SCSI_QCMD(ipr_queuecommand)
5857
35a39691
BK		 5858/**
5859 * ipr_ioctl - IOCTL handler
5860 * @sdev: scsi device struct
5861 * @cmd: IOCTL cmd
5862 * @arg: IOCTL arg
5863 *
5864 * Return value:
5865 * 0 on success / other on failure
5866 **/
bd705f2d 5867static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
35a39691
BK		 5868{
5869 struct ipr_resource_entry *res;
5870
5871 res = (struct ipr_resource_entry *)sdev->hostdata;
0ce3a7e5
BK		 5872 if (res && ipr_is_gata(res)) {
5873 if (cmd == HDIO_GET_IDENTITY)
5874 return -ENOTTY;
94be9a58 5875 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
0ce3a7e5 5876 }
35a39691
BK		 5877
5878 return -EINVAL;
5879}
5880
1da177e4
LT		 5881/**
5882 * ipr_info - Get information about the card/driver
5883 * @scsi_host: scsi host struct
5884 *
5885 * Return value:
5886 * pointer to buffer with description string
5887 **/
5888static const char * ipr_ioa_info(struct Scsi_Host *host)
5889{
5890 static char buffer[512];
5891 struct ipr_ioa_cfg *ioa_cfg;
5892 unsigned long lock_flags = 0;
5893
5894 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
5895
5896 spin_lock_irqsave(host->host_lock, lock_flags);
5897 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
5898 spin_unlock_irqrestore(host->host_lock, lock_flags);
5899
5900 return buffer;
5901}
5902
5903static struct scsi_host_template driver_template = {
5904 .module = THIS_MODULE,
5905 .name = "IPR",
5906 .info = ipr_ioa_info,
35a39691 5907 .ioctl = ipr_ioctl,
1da177e4
LT		 5908 .queuecommand = ipr_queuecommand,
5909 .eh_abort_handler = ipr_eh_abort,
5910 .eh_device_reset_handler = ipr_eh_dev_reset,
5911 .eh_host_reset_handler = ipr_eh_host_reset,
5912 .slave_alloc = ipr_slave_alloc,
5913 .slave_configure = ipr_slave_configure,
5914 .slave_destroy = ipr_slave_destroy,
35a39691
BK		 5915 .target_alloc = ipr_target_alloc,
5916 .target_destroy = ipr_target_destroy,
1da177e4
LT		 5917 .change_queue_depth = ipr_change_queue_depth,
5918 .change_queue_type = ipr_change_queue_type,
5919 .bios_param = ipr_biosparam,
5920 .can_queue = IPR_MAX_COMMANDS,
5921 .this_id = -1,
5922 .sg_tablesize = IPR_MAX_SGLIST,
5923 .max_sectors = IPR_IOA_MAX_SECTORS,
5924 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
5925 .use_clustering = ENABLE_CLUSTERING,
5926 .shost_attrs = ipr_ioa_attrs,
5927 .sdev_attrs = ipr_dev_attrs,
5928 .proc_name = IPR_NAME
5929};
5930
35a39691
BK		 5931/**
5932 * ipr_ata_phy_reset - libata phy_reset handler
5933 * @ap: ata port to reset
5934 *
5935 **/
5936static void ipr_ata_phy_reset(struct ata_port *ap)
5937{
5938 unsigned long flags;
5939 struct ipr_sata_port *sata_port = ap->private_data;
5940 struct ipr_resource_entry *res = sata_port->res;
5941 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5942 int rc;
5943
5944 ENTER;
5945 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5946 while(ioa_cfg->in_reset_reload) {
5947 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5948 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5949 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5950 }
5951
5952 if (!ioa_cfg->allow_cmds)
5953 goto out_unlock;
5954
5955 rc = ipr_device_reset(ioa_cfg, res);
5956
5957 if (rc) {
3e4ec344 5958 ap->link.device[0].class = ATA_DEV_NONE;
35a39691
BK		 5959 goto out_unlock;
5960 }
5961
3e7ebdfa
WB		 5962 ap->link.device[0].class = res->ata_class;
5963 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
3e4ec344 5964 ap->link.device[0].class = ATA_DEV_NONE;
35a39691
BK		 5965
5966out_unlock:
5967 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5968 LEAVE;
5969}
5970
5971/**
5972 * ipr_ata_post_internal - Cleanup after an internal command
5973 * @qc: ATA queued command
5974 *
5975 * Return value:
5976 * none
5977 **/
5978static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5979{
5980 struct ipr_sata_port *sata_port = qc->ap->private_data;
5981 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5982 struct ipr_cmnd *ipr_cmd;
5983 unsigned long flags;
5984
5985 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
73d98ff0
BK		 5986 while(ioa_cfg->in_reset_reload) {
5987 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5988 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5989 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5990 }
5991
35a39691
BK		 5992 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5993 if (ipr_cmd->qc == qc) {
5994 ipr_device_reset(ioa_cfg, sata_port->res);
5995 break;
5996 }
5997 }
5998 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5999}
6000
35a39691
BK		 6001/**
6002 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6003 * @regs: destination
6004 * @tf: source ATA taskfile
6005 *
6006 * Return value:
6007 * none
6008 **/
6009static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6010 struct ata_taskfile *tf)
6011{
6012 regs->feature = tf->feature;
6013 regs->nsect = tf->nsect;
6014 regs->lbal = tf->lbal;
6015 regs->lbam = tf->lbam;
6016 regs->lbah = tf->lbah;
6017 regs->device = tf->device;
6018 regs->command = tf->command;
6019 regs->hob_feature = tf->hob_feature;
6020 regs->hob_nsect = tf->hob_nsect;
6021 regs->hob_lbal = tf->hob_lbal;
6022 regs->hob_lbam = tf->hob_lbam;
6023 regs->hob_lbah = tf->hob_lbah;
6024 regs->ctl = tf->ctl;
6025}
6026
6027/**
6028 * ipr_sata_done - done function for SATA commands
6029 * @ipr_cmd: ipr command struct
6030 *
6031 * This function is invoked by the interrupt handler for
6032 * ops generated by the SCSI mid-layer to SATA devices
6033 *
6034 * Return value:
6035 * none
6036 **/
6037static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6038{
6039 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6040 struct ata_queued_cmd *qc = ipr_cmd->qc;
6041 struct ipr_sata_port *sata_port = qc->ap->private_data;
6042 struct ipr_resource_entry *res = sata_port->res;
96d21f00 6043 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
35a39691 6044
96d21f00
WB		 6045 if (ipr_cmd->ioa_cfg->sis64)
6046 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6047 sizeof(struct ipr_ioasa_gata));
6048 else
6049 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6050 sizeof(struct ipr_ioasa_gata));
35a39691
BK		 6051 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6052
96d21f00 6053 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
3e7ebdfa 6054 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
35a39691
BK		 6055
6056 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
96d21f00 6057 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
35a39691 6058 else
96d21f00 6059 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
35a39691
BK		 6060 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6061 ata_qc_complete(qc);
6062}
6063
a32c055f
WB		 6064/**
6065 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6066 * @ipr_cmd: ipr command struct
6067 * @qc: ATA queued command
6068 *
6069 **/
6070static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6071 struct ata_queued_cmd *qc)
6072{
6073 u32 ioadl_flags = 0;
6074 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6075 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
6076 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6077 int len = qc->nbytes;
6078 struct scatterlist *sg;
6079 unsigned int si;
6080 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6081
6082 if (len == 0)
6083 return;
6084
6085 if (qc->dma_dir == DMA_TO_DEVICE) {
6086 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6087 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6088 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6089 ioadl_flags = IPR_IOADL_FLAGS_READ;
6090
6091 ioarcb->data_transfer_length = cpu_to_be32(len);
6092 ioarcb->ioadl_len =
6093 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6094 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6095 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl));
6096
6097 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6098 ioadl64->flags = cpu_to_be32(ioadl_flags);
6099 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6100 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6101
6102 last_ioadl64 = ioadl64;
6103 ioadl64++;
6104 }
6105
6106 if (likely(last_ioadl64))
6107 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6108}
6109
35a39691
BK		 6110/**
6111 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6112 * @ipr_cmd: ipr command struct
6113 * @qc: ATA queued command
6114 *
6115 **/
6116static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6117 struct ata_queued_cmd *qc)
6118{
6119 u32 ioadl_flags = 0;
6120 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
a32c055f 6121 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3be6cbd7 6122 struct ipr_ioadl_desc *last_ioadl = NULL;
dde20207 6123 int len = qc->nbytes;
35a39691 6124 struct scatterlist *sg;
ff2aeb1e 6125 unsigned int si;
35a39691
BK		 6126
6127 if (len == 0)
6128 return;
6129
6130 if (qc->dma_dir == DMA_TO_DEVICE) {
6131 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6132 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
a32c055f
WB		 6133 ioarcb->data_transfer_length = cpu_to_be32(len);
6134 ioarcb->ioadl_len =
35a39691
BK		 6135 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6136 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6137 ioadl_flags = IPR_IOADL_FLAGS_READ;
6138 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6139 ioarcb->read_ioadl_len =
6140 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6141 }
6142
ff2aeb1e 6143 for_each_sg(qc->sg, sg, qc->n_elem, si) {
35a39691
BK		 6144 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6145 ioadl->address = cpu_to_be32(sg_dma_address(sg));
3be6cbd7
JG		 6146
6147 last_ioadl = ioadl;
6148 ioadl++;
35a39691 6149 }
3be6cbd7
JG		 6150
6151 if (likely(last_ioadl))
6152 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
35a39691
BK		 6153}
6154
6155/**
6156 * ipr_qc_issue - Issue a SATA qc to a device
6157 * @qc: queued command
6158 *
6159 * Return value:
6160 * 0 if success
6161 **/
6162static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6163{
6164 struct ata_port *ap = qc->ap;
6165 struct ipr_sata_port *sata_port = ap->private_data;
6166 struct ipr_resource_entry *res = sata_port->res;
6167 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6168 struct ipr_cmnd *ipr_cmd;
6169 struct ipr_ioarcb *ioarcb;
6170 struct ipr_ioarcb_ata_regs *regs;
6171
6172 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
0feeed82 6173 return AC_ERR_SYSTEM;
35a39691
BK		 6174
6175 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6176 ioarcb = &ipr_cmd->ioarcb;
35a39691 6177
a32c055f
WB		 6178 if (ioa_cfg->sis64) {
6179 regs = &ipr_cmd->i.ata_ioadl.regs;
6180 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6181 } else
6182 regs = &ioarcb->u.add_data.u.regs;
6183
6184 memset(regs, 0, sizeof(*regs));
6185 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
35a39691
BK		 6186
6187 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6188 ipr_cmd->qc = qc;
6189 ipr_cmd->done = ipr_sata_done;
3e7ebdfa 6190 ipr_cmd->ioarcb.res_handle = res->res_handle;
35a39691
BK		 6191 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6192 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6193 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
dde20207 6194 ipr_cmd->dma_use_sg = qc->n_elem;
35a39691 6195
a32c055f
WB		 6196 if (ioa_cfg->sis64)
6197 ipr_build_ata_ioadl64(ipr_cmd, qc);
6198 else
6199 ipr_build_ata_ioadl(ipr_cmd, qc);
6200
35a39691
BK		 6201 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6202 ipr_copy_sata_tf(regs, &qc->tf);
6203 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
3e7ebdfa 6204 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
35a39691
BK		 6205
6206 switch (qc->tf.protocol) {
6207 case ATA_PROT_NODATA:
6208 case ATA_PROT_PIO:
6209 break;
6210
6211 case ATA_PROT_DMA:
6212 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6213 break;
6214
0dc36888
TH		 6215 case ATAPI_PROT_PIO:
6216 case ATAPI_PROT_NODATA:
35a39691
BK		 6217 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6218 break;
6219
0dc36888 6220 case ATAPI_PROT_DMA:
35a39691
BK		 6221 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6222 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6223 break;
6224
6225 default:
6226 WARN_ON(1);
0feeed82 6227 return AC_ERR_INVALID;
35a39691
BK		 6228 }
6229
6230 mb();
a32c055f
WB		 6231
6232 ipr_send_command(ipr_cmd);
6233
35a39691
BK		 6234 return 0;
6235}
6236
4c9bf4e7
TH		 6237/**
6238 * ipr_qc_fill_rtf - Read result TF
6239 * @qc: ATA queued command
6240 *
6241 * Return value:
6242 * true
6243 **/
6244static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6245{
6246 struct ipr_sata_port *sata_port = qc->ap->private_data;
6247 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6248 struct ata_taskfile *tf = &qc->result_tf;
6249
6250 tf->feature = g->error;
6251 tf->nsect = g->nsect;
6252 tf->lbal = g->lbal;
6253 tf->lbam = g->lbam;
6254 tf->lbah = g->lbah;
6255 tf->device = g->device;
6256 tf->command = g->status;
6257 tf->hob_nsect = g->hob_nsect;
6258 tf->hob_lbal = g->hob_lbal;
6259 tf->hob_lbam = g->hob_lbam;
6260 tf->hob_lbah = g->hob_lbah;
6261 tf->ctl = g->alt_status;
6262
6263 return true;
6264}
6265
35a39691 6266static struct ata_port_operations ipr_sata_ops = {
35a39691 6267 .phy_reset = ipr_ata_phy_reset,
a1efdaba 6268 .hardreset = ipr_sata_reset,
35a39691 6269 .post_internal_cmd = ipr_ata_post_internal,
35a39691
BK		 6270 .qc_prep = ata_noop_qc_prep,
6271 .qc_issue = ipr_qc_issue,
4c9bf4e7 6272 .qc_fill_rtf = ipr_qc_fill_rtf,
35a39691
BK		 6273 .port_start = ata_sas_port_start,
6274 .port_stop = ata_sas_port_stop
6275};
6276
6277static struct ata_port_info sata_port_info = {
9cbe056f 6278 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA,
0f2e0330
SS		 6279 .pio_mask = ATA_PIO4_ONLY,
6280 .mwdma_mask = ATA_MWDMA2,
6281 .udma_mask = ATA_UDMA6,
35a39691
BK		 6282 .port_ops = &ipr_sata_ops
6283};
6284
1da177e4
LT		 6285#ifdef CONFIG_PPC_PSERIES
6286static const u16 ipr_blocked_processors[] = {
6287 PV_NORTHSTAR,
6288 PV_PULSAR,
6289 PV_POWER4,
6290 PV_ICESTAR,
6291 PV_SSTAR,
6292 PV_POWER4p,
6293 PV_630,
6294 PV_630p
6295};
6296
6297/**
6298 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6299 * @ioa_cfg: ioa cfg struct
6300 *
6301 * Adapters that use Gemstone revision < 3.1 do not work reliably on
6302 * certain pSeries hardware. This function determines if the given
6303 * adapter is in one of these confgurations or not.
6304 *
6305 * Return value:
6306 * 1 if adapter is not supported / 0 if adapter is supported
6307 **/
6308static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6309{
1da177e4
LT		 6310 int i;
6311
44c10138
AK		 6312 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6313 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
6314 if (__is_processor(ipr_blocked_processors[i]))
6315 return 1;
1da177e4
LT		 6316 }
6317 }
6318 return 0;
6319}
6320#else
6321#define ipr_invalid_adapter(ioa_cfg) 0
6322#endif
6323
6324/**
6325 * ipr_ioa_bringdown_done - IOA bring down completion.
6326 * @ipr_cmd: ipr command struct
6327 *
6328 * This function processes the completion of an adapter bring down.
6329 * It wakes any reset sleepers.
6330 *
6331 * Return value:
6332 * IPR_RC_JOB_RETURN
6333 **/
6334static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6335{
6336 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6337
6338 ENTER;
6339 ioa_cfg->in_reset_reload = 0;
6340 ioa_cfg->reset_retries = 0;
6341 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6342 wake_up_all(&ioa_cfg->reset_wait_q);
6343
6344 spin_unlock_irq(ioa_cfg->host->host_lock);
6345 scsi_unblock_requests(ioa_cfg->host);
6346 spin_lock_irq(ioa_cfg->host->host_lock);
6347 LEAVE;
6348
6349 return IPR_RC_JOB_RETURN;
6350}
6351
6352/**
6353 * ipr_ioa_reset_done - IOA reset completion.
6354 * @ipr_cmd: ipr command struct
6355 *
6356 * This function processes the completion of an adapter reset.
6357 * It schedules any necessary mid-layer add/removes and
6358 * wakes any reset sleepers.
6359 *
6360 * Return value:
6361 * IPR_RC_JOB_RETURN
6362 **/
6363static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
6364{
6365 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6366 struct ipr_resource_entry *res;
6367 struct ipr_hostrcb *hostrcb, *temp;
6368 int i = 0;
6369
6370 ENTER;
6371 ioa_cfg->in_reset_reload = 0;
6372 ioa_cfg->allow_cmds = 1;
6373 ioa_cfg->reset_cmd = NULL;
3d1d0da6 6374 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
1da177e4
LT		 6375
6376 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
6377 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
6378 ipr_trace;
6379 break;
6380 }
6381 }
6382 schedule_work(&ioa_cfg->work_q);
6383
6384 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
6385 list_del(&hostrcb->queue);
6386 if (i++ < IPR_NUM_LOG_HCAMS)
6387 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
6388 else
6389 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
6390 }
6391
6bb04170 6392 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
1da177e4
LT		 6393 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
6394
6395 ioa_cfg->reset_retries = 0;
6396 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6397 wake_up_all(&ioa_cfg->reset_wait_q);
6398
30237853 6399 spin_unlock(ioa_cfg->host->host_lock);
1da177e4 6400 scsi_unblock_requests(ioa_cfg->host);
30237853 6401 spin_lock(ioa_cfg->host->host_lock);
1da177e4
LT		 6402
6403 if (!ioa_cfg->allow_cmds)
6404 scsi_block_requests(ioa_cfg->host);
6405
6406 LEAVE;
6407 return IPR_RC_JOB_RETURN;
6408}
6409
6410/**
6411 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
6412 * @supported_dev: supported device struct
6413 * @vpids: vendor product id struct
6414 *
6415 * Return value:
6416 * none
6417 **/
6418static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
6419 struct ipr_std_inq_vpids *vpids)
6420{
6421 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
6422 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
6423 supported_dev->num_records = 1;
6424 supported_dev->data_length =
6425 cpu_to_be16(sizeof(struct ipr_supported_device));
6426 supported_dev->reserved = 0;
6427}
6428
6429/**
6430 * ipr_set_supported_devs - Send Set Supported Devices for a device
6431 * @ipr_cmd: ipr command struct
6432 *
a32c055f 6433 * This function sends a Set Supported Devices to the adapter
1da177e4
LT		 6434 *
6435 * Return value:
6436 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6437 **/
6438static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
6439{
6440 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6441 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
1da177e4
LT		 6442 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6443 struct ipr_resource_entry *res = ipr_cmd->u.res;
6444
6445 ipr_cmd->job_step = ipr_ioa_reset_done;
6446
6447 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
e4fbf44e 6448 if (!ipr_is_scsi_disk(res))
1da177e4
LT		 6449 continue;
6450
6451 ipr_cmd->u.res = res;
3e7ebdfa 6452 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
1da177e4
LT		 6453
6454 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6455 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6456 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6457
6458 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
3e7ebdfa 6459 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
1da177e4
LT		 6460 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
6461 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
6462
a32c055f
WB		 6463 ipr_init_ioadl(ipr_cmd,
6464 ioa_cfg->vpd_cbs_dma +
6465 offsetof(struct ipr_misc_cbs, supp_dev),
6466 sizeof(struct ipr_supported_device),
6467 IPR_IOADL_FLAGS_WRITE_LAST);
1da177e4
LT		 6468
6469 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6470 IPR_SET_SUP_DEVICE_TIMEOUT);
6471
3e7ebdfa
WB		 6472 if (!ioa_cfg->sis64)
6473 ipr_cmd->job_step = ipr_set_supported_devs;
1da177e4
LT		 6474 return IPR_RC_JOB_RETURN;
6475 }
6476
6477 return IPR_RC_JOB_CONTINUE;
6478}
6479
6480/**
6481 * ipr_get_mode_page - Locate specified mode page
6482 * @mode_pages: mode page buffer
6483 * @page_code: page code to find
6484 * @len: minimum required length for mode page
6485 *
6486 * Return value:
6487 * pointer to mode page / NULL on failure
6488 **/
6489static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
6490 u32 page_code, u32 len)
6491{
6492 struct ipr_mode_page_hdr *mode_hdr;
6493 u32 page_length;
6494 u32 length;
6495
6496 if (!mode_pages || (mode_pages->hdr.length == 0))
6497 return NULL;
6498
6499 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
6500 mode_hdr = (struct ipr_mode_page_hdr *)
6501 (mode_pages->data + mode_pages->hdr.block_desc_len);
6502
6503 while (length) {
6504 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
6505 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
6506 return mode_hdr;
6507 break;
6508 } else {
6509 page_length = (sizeof(struct ipr_mode_page_hdr) +
6510 mode_hdr->page_length);
6511 length -= page_length;
6512 mode_hdr = (struct ipr_mode_page_hdr *)
6513 ((unsigned long)mode_hdr + page_length);
6514 }
6515 }
6516 return NULL;
6517}
6518
6519/**
6520 * ipr_check_term_power - Check for term power errors
6521 * @ioa_cfg: ioa config struct
6522 * @mode_pages: IOAFP mode pages buffer
6523 *
6524 * Check the IOAFP's mode page 28 for term power errors
6525 *
6526 * Return value:
6527 * nothing
6528 **/
6529static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
6530 struct ipr_mode_pages *mode_pages)
6531{
6532 int i;
6533 int entry_length;
6534 struct ipr_dev_bus_entry *bus;
6535 struct ipr_mode_page28 *mode_page;
6536
6537 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6538 sizeof(struct ipr_mode_page28));
6539
6540 entry_length = mode_page->entry_length;
6541
6542 bus = mode_page->bus;
6543
6544 for (i = 0; i < mode_page->num_entries; i++) {
6545 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
6546 dev_err(&ioa_cfg->pdev->dev,
6547 "Term power is absent on scsi bus %d\n",
6548 bus->res_addr.bus);
6549 }
6550
6551 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
6552 }
6553}
6554
6555/**
6556 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
6557 * @ioa_cfg: ioa config struct
6558 *
6559 * Looks through the config table checking for SES devices. If
6560 * the SES device is in the SES table indicating a maximum SCSI
6561 * bus speed, the speed is limited for the bus.
6562 *
6563 * Return value:
6564 * none
6565 **/
6566static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
6567{
6568 u32 max_xfer_rate;
6569 int i;
6570
6571 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
6572 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
6573 ioa_cfg->bus_attr[i].bus_width);
6574
6575 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
6576 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
6577 }
6578}
6579
6580/**
6581 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
6582 * @ioa_cfg: ioa config struct
6583 * @mode_pages: mode page 28 buffer
6584 *
6585 * Updates mode page 28 based on driver configuration
6586 *
6587 * Return value:
6588 * none
6589 **/
6590static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
6591 struct ipr_mode_pages *mode_pages)
6592{
6593 int i, entry_length;
6594 struct ipr_dev_bus_entry *bus;
6595 struct ipr_bus_attributes *bus_attr;
6596 struct ipr_mode_page28 *mode_page;
6597
6598 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6599 sizeof(struct ipr_mode_page28));
6600
6601 entry_length = mode_page->entry_length;
6602
6603 /* Loop for each device bus entry */
6604 for (i = 0, bus = mode_page->bus;
6605 i < mode_page->num_entries;
6606 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
6607 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
6608 dev_err(&ioa_cfg->pdev->dev,
6609 "Invalid resource address reported: 0x%08X\n",
6610 IPR_GET_PHYS_LOC(bus->res_addr));
6611 continue;
6612 }
6613
6614 bus_attr = &ioa_cfg->bus_attr[i];
6615 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
6616 bus->bus_width = bus_attr->bus_width;
6617 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
6618 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
6619 if (bus_attr->qas_enabled)
6620 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
6621 else
6622 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
6623 }
6624}
6625
6626/**
6627 * ipr_build_mode_select - Build a mode select command
6628 * @ipr_cmd: ipr command struct
6629 * @res_handle: resource handle to send command to
6630 * @parm: Byte 2 of Mode Sense command
6631 * @dma_addr: DMA buffer address
6632 * @xfer_len: data transfer length
6633 *
6634 * Return value:
6635 * none
6636 **/
6637static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
a32c055f
WB		 6638 __be32 res_handle, u8 parm,
6639 dma_addr_t dma_addr, u8 xfer_len)
1da177e4 6640{
1da177e4
LT		 6641 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6642
6643 ioarcb->res_handle = res_handle;
6644 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6645 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6646 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
6647 ioarcb->cmd_pkt.cdb[1] = parm;
6648 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6649
a32c055f 6650 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
1da177e4
LT		 6651}
6652
6653/**
6654 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
6655 * @ipr_cmd: ipr command struct
6656 *
6657 * This function sets up the SCSI bus attributes and sends
6658 * a Mode Select for Page 28 to activate them.
6659 *
6660 * Return value:
6661 * IPR_RC_JOB_RETURN
6662 **/
6663static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
6664{
6665 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6666 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6667 int length;
6668
6669 ENTER;
4733804c
BK		 6670 ipr_scsi_bus_speed_limit(ioa_cfg);
6671 ipr_check_term_power(ioa_cfg, mode_pages);
6672 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
6673 length = mode_pages->hdr.length + 1;
6674 mode_pages->hdr.length = 0;
1da177e4
LT		 6675
6676 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6677 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6678 length);
6679
f72919ec
WB		 6680 ipr_cmd->job_step = ipr_set_supported_devs;
6681 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6682 struct ipr_resource_entry, queue);
1da177e4
LT		 6683 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6684
6685 LEAVE;
6686 return IPR_RC_JOB_RETURN;
6687}
6688
6689/**
6690 * ipr_build_mode_sense - Builds a mode sense command
6691 * @ipr_cmd: ipr command struct
6692 * @res: resource entry struct
6693 * @parm: Byte 2 of mode sense command
6694 * @dma_addr: DMA address of mode sense buffer
6695 * @xfer_len: Size of DMA buffer
6696 *
6697 * Return value:
6698 * none
6699 **/
6700static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
6701 __be32 res_handle,
a32c055f 6702 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
1da177e4 6703{
1da177e4
LT		 6704 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6705
6706 ioarcb->res_handle = res_handle;
6707 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
6708 ioarcb->cmd_pkt.cdb[2] = parm;
6709 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6710 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6711
a32c055f 6712 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
1da177e4
LT		 6713}
6714
dfed823e
BK		 6715/**
6716 * ipr_reset_cmd_failed - Handle failure of IOA reset command
6717 * @ipr_cmd: ipr command struct
6718 *
6719 * This function handles the failure of an IOA bringup command.
6720 *
6721 * Return value:
6722 * IPR_RC_JOB_RETURN
6723 **/
6724static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
6725{
6726 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
96d21f00 6727 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
dfed823e
BK		 6728
6729 dev_err(&ioa_cfg->pdev->dev,
6730 "0x%02X failed with IOASC: 0x%08X\n",
6731 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
6732
6733 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6734 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6735 return IPR_RC_JOB_RETURN;
6736}
6737
6738/**
6739 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
6740 * @ipr_cmd: ipr command struct
6741 *
6742 * This function handles the failure of a Mode Sense to the IOAFP.
6743 * Some adapters do not handle all mode pages.
6744 *
6745 * Return value:
6746 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6747 **/
6748static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
6749{
f72919ec 6750 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
96d21f00 6751 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
dfed823e
BK		 6752
6753 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
f72919ec
WB		 6754 ipr_cmd->job_step = ipr_set_supported_devs;
6755 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6756 struct ipr_resource_entry, queue);
dfed823e
BK		 6757 return IPR_RC_JOB_CONTINUE;
6758 }
6759
6760 return ipr_reset_cmd_failed(ipr_cmd);
6761}
6762
1da177e4
LT		 6763/**
6764 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
6765 * @ipr_cmd: ipr command struct
6766 *
6767 * This function send a Page 28 mode sense to the IOA to
6768 * retrieve SCSI bus attributes.
6769 *
6770 * Return value:
6771 * IPR_RC_JOB_RETURN
6772 **/
6773static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
6774{
6775 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6776
6777 ENTER;
6778 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6779 0x28, ioa_cfg->vpd_cbs_dma +
6780 offsetof(struct ipr_misc_cbs, mode_pages),
6781 sizeof(struct ipr_mode_pages));
6782
6783 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
dfed823e 6784 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
1da177e4
LT		 6785
6786 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6787
6788 LEAVE;
6789 return IPR_RC_JOB_RETURN;
6790}
6791
ac09c349
BK		 6792/**
6793 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
6794 * @ipr_cmd: ipr command struct
6795 *
6796 * This function enables dual IOA RAID support if possible.
6797 *
6798 * Return value:
6799 * IPR_RC_JOB_RETURN
6800 **/
6801static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
6802{
6803 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6804 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6805 struct ipr_mode_page24 *mode_page;
6806 int length;
6807
6808 ENTER;
6809 mode_page = ipr_get_mode_page(mode_pages, 0x24,
6810 sizeof(struct ipr_mode_page24));
6811
6812 if (mode_page)
6813 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
6814
6815 length = mode_pages->hdr.length + 1;
6816 mode_pages->hdr.length = 0;
6817
6818 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6819 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6820 length);
6821
6822 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6823 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6824
6825 LEAVE;
6826 return IPR_RC_JOB_RETURN;
6827}
6828
6829/**
6830 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
6831 * @ipr_cmd: ipr command struct
6832 *
6833 * This function handles the failure of a Mode Sense to the IOAFP.
6834 * Some adapters do not handle all mode pages.
6835 *
6836 * Return value:
6837 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6838 **/
6839static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
6840{
96d21f00 6841 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
ac09c349
BK		 6842
6843 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6844 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6845 return IPR_RC_JOB_CONTINUE;
6846 }
6847
6848 return ipr_reset_cmd_failed(ipr_cmd);
6849}
6850
6851/**
6852 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
6853 * @ipr_cmd: ipr command struct
6854 *
6855 * This function send a mode sense to the IOA to retrieve
6856 * the IOA Advanced Function Control mode page.
6857 *
6858 * Return value:
6859 * IPR_RC_JOB_RETURN
6860 **/
6861static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
6862{
6863 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6864
6865 ENTER;
6866 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6867 0x24, ioa_cfg->vpd_cbs_dma +
6868 offsetof(struct ipr_misc_cbs, mode_pages),
6869 sizeof(struct ipr_mode_pages));
6870
6871 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
6872 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
6873
6874 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6875
6876 LEAVE;
6877 return IPR_RC_JOB_RETURN;
6878}
6879
1da177e4
LT		 6880/**
6881 * ipr_init_res_table - Initialize the resource table
6882 * @ipr_cmd: ipr command struct
6883 *
6884 * This function looks through the existing resource table, comparing
6885 * it with the config table. This function will take care of old/new
6886 * devices and schedule adding/removing them from the mid-layer
6887 * as appropriate.
6888 *
6889 * Return value:
6890 * IPR_RC_JOB_CONTINUE
6891 **/
6892static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
6893{
6894 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6895 struct ipr_resource_entry *res, *temp;
3e7ebdfa
WB		 6896 struct ipr_config_table_entry_wrapper cfgtew;
6897 int entries, found, flag, i;
1da177e4
LT		 6898 LIST_HEAD(old_res);
6899
6900 ENTER;
3e7ebdfa
WB		 6901 if (ioa_cfg->sis64)
6902 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
6903 else
6904 flag = ioa_cfg->u.cfg_table->hdr.flags;
6905
6906 if (flag & IPR_UCODE_DOWNLOAD_REQ)
1da177e4
LT		 6907 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
6908
6909 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
6910 list_move_tail(&res->queue, &old_res);
6911
3e7ebdfa 6912 if (ioa_cfg->sis64)
438b0331 6913 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
3e7ebdfa
WB		 6914 else
6915 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
6916
6917 for (i = 0; i < entries; i++) {
6918 if (ioa_cfg->sis64)
6919 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
6920 else
6921 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
1da177e4
LT		 6922 found = 0;
6923
6924 list_for_each_entry_safe(res, temp, &old_res, queue) {
3e7ebdfa 6925 if (ipr_is_same_device(res, &cfgtew)) {
1da177e4
LT		 6926 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6927 found = 1;
6928 break;
6929 }
6930 }
6931
6932 if (!found) {
6933 if (list_empty(&ioa_cfg->free_res_q)) {
6934 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
6935 break;
6936 }
6937
6938 found = 1;
6939 res = list_entry(ioa_cfg->free_res_q.next,
6940 struct ipr_resource_entry, queue);
6941 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
3e7ebdfa 6942 ipr_init_res_entry(res, &cfgtew);
1da177e4 6943 res->add_to_ml = 1;
56115598
WB		 6944 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
6945 res->sdev->allow_restart = 1;
1da177e4
LT		 6946
6947 if (found)
3e7ebdfa 6948 ipr_update_res_entry(res, &cfgtew);
1da177e4
LT		 6949 }
6950
6951 list_for_each_entry_safe(res, temp, &old_res, queue) {
6952 if (res->sdev) {
6953 res->del_from_ml = 1;
3e7ebdfa 6954 res->res_handle = IPR_INVALID_RES_HANDLE;
1da177e4 6955 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
1da177e4
LT		 6956 }
6957 }
6958
3e7ebdfa
WB		 6959 list_for_each_entry_safe(res, temp, &old_res, queue) {
6960 ipr_clear_res_target(res);
6961 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
6962 }
6963
ac09c349
BK		 6964 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6965 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
6966 else
6967 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
1da177e4
LT		 6968
6969 LEAVE;
6970 return IPR_RC_JOB_CONTINUE;
6971}
6972
6973/**
6974 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
6975 * @ipr_cmd: ipr command struct
6976 *
6977 * This function sends a Query IOA Configuration command
6978 * to the adapter to retrieve the IOA configuration table.
6979 *
6980 * Return value:
6981 * IPR_RC_JOB_RETURN
6982 **/
6983static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6984{
6985 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6986 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
1da177e4 6987 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
ac09c349 6988 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
1da177e4
LT		 6989
6990 ENTER;
ac09c349
BK		 6991 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6992 ioa_cfg->dual_raid = 1;
1da177e4
LT		 6993 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6994 ucode_vpd->major_release, ucode_vpd->card_type,
6995 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6996 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6997 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6998
6999 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
438b0331 7000 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
3e7ebdfa
WB		 7001 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7002 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
1da177e4 7003
3e7ebdfa 7004 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
a32c055f 7005 IPR_IOADL_FLAGS_READ_LAST);
1da177e4
LT		 7006
7007 ipr_cmd->job_step = ipr_init_res_table;
7008
7009 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7010
7011 LEAVE;
7012 return IPR_RC_JOB_RETURN;
7013}
7014
7015/**
7016 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7017 * @ipr_cmd: ipr command struct
7018 *
7019 * This utility function sends an inquiry to the adapter.
7020 *
7021 * Return value:
7022 * none
7023 **/
7024static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
a32c055f 7025 dma_addr_t dma_addr, u8 xfer_len)
1da177e4
LT		 7026{
7027 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
1da177e4
LT		 7028
7029 ENTER;
7030 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7031 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7032
7033 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7034 ioarcb->cmd_pkt.cdb[1] = flags;
7035 ioarcb->cmd_pkt.cdb[2] = page;
7036 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7037
a32c055f 7038 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
1da177e4
LT		 7039
7040 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7041 LEAVE;
7042}
7043
62275040
BK		 7044/**
7045 * ipr_inquiry_page_supported - Is the given inquiry page supported
7046 * @page0: inquiry page 0 buffer
7047 * @page: page code.
7048 *
7049 * This function determines if the specified inquiry page is supported.
7050 *
7051 * Return value:
7052 * 1 if page is supported / 0 if not
7053 **/
7054static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7055{
7056 int i;
7057
7058 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7059 if (page0->page[i] == page)
7060 return 1;
7061
7062 return 0;
7063}
7064
ac09c349
BK		 7065/**
7066 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7067 * @ipr_cmd: ipr command struct
7068 *
7069 * This function sends a Page 0xD0 inquiry to the adapter
7070 * to retrieve adapter capabilities.
7071 *
7072 * Return value:
7073 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7074 **/
7075static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7076{
7077 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7078 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7079 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7080
7081 ENTER;
7082 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7083 memset(cap, 0, sizeof(*cap));
7084
7085 if (ipr_inquiry_page_supported(page0, 0xD0)) {
7086 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7087 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7088 sizeof(struct ipr_inquiry_cap));
7089 return IPR_RC_JOB_RETURN;
7090 }
7091
7092 LEAVE;
7093 return IPR_RC_JOB_CONTINUE;
7094}
7095
1da177e4
LT		 7096/**
7097 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7098 * @ipr_cmd: ipr command struct
7099 *
7100 * This function sends a Page 3 inquiry to the adapter
7101 * to retrieve software VPD information.
7102 *
7103 * Return value:
7104 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7105 **/
7106static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
62275040
BK		 7107{
7108 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
62275040
BK		 7109
7110 ENTER;
7111
ac09c349 7112 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
62275040
BK		 7113
7114 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7115 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7116 sizeof(struct ipr_inquiry_page3));
7117
7118 LEAVE;
7119 return IPR_RC_JOB_RETURN;
7120}
7121
7122/**
7123 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7124 * @ipr_cmd: ipr command struct
7125 *
7126 * This function sends a Page 0 inquiry to the adapter
7127 * to retrieve supported inquiry pages.
7128 *
7129 * Return value:
7130 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7131 **/
7132static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
1da177e4
LT		 7133{
7134 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7135 char type[5];
7136
7137 ENTER;
7138
7139 /* Grab the type out of the VPD and store it away */
7140 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7141 type[4] = '\0';
7142 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7143
62275040 7144 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
1da177e4 7145
62275040
BK		 7146 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7147 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7148 sizeof(struct ipr_inquiry_page0));
1da177e4
LT		 7149
7150 LEAVE;
7151 return IPR_RC_JOB_RETURN;
7152}
7153
7154/**
7155 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7156 * @ipr_cmd: ipr command struct
7157 *
7158 * This function sends a standard inquiry to the adapter.
7159 *
7160 * Return value:
7161 * IPR_RC_JOB_RETURN
7162 **/
7163static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7164{
7165 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7166
7167 ENTER;
62275040 7168 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
1da177e4
LT		 7169
7170 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7171 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7172 sizeof(struct ipr_ioa_vpd));
7173
7174 LEAVE;
7175 return IPR_RC_JOB_RETURN;
7176}
7177
7178/**
214777ba 7179 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
1da177e4
LT		 7180 * @ipr_cmd: ipr command struct
7181 *
7182 * This function send an Identify Host Request Response Queue
7183 * command to establish the HRRQ with the adapter.
7184 *
7185 * Return value:
7186 * IPR_RC_JOB_RETURN
7187 **/
214777ba 7188static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
1da177e4
LT		 7189{
7190 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7191 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7192
7193 ENTER;
7194 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7195
7196 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7197 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7198
7199 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
214777ba
WB		 7200 if (ioa_cfg->sis64)
7201 ioarcb->cmd_pkt.cdb[1] = 0x1;
1da177e4 7202 ioarcb->cmd_pkt.cdb[2] =
214777ba 7203 ((u64) ioa_cfg->host_rrq_dma >> 24) & 0xff;
1da177e4 7204 ioarcb->cmd_pkt.cdb[3] =
214777ba 7205 ((u64) ioa_cfg->host_rrq_dma >> 16) & 0xff;
1da177e4 7206 ioarcb->cmd_pkt.cdb[4] =
214777ba 7207 ((u64) ioa_cfg->host_rrq_dma >> 8) & 0xff;
1da177e4 7208 ioarcb->cmd_pkt.cdb[5] =
214777ba 7209 ((u64) ioa_cfg->host_rrq_dma) & 0xff;
1da177e4
LT		 7210 ioarcb->cmd_pkt.cdb[7] =
7211 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
7212 ioarcb->cmd_pkt.cdb[8] =
7213 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
7214
214777ba
WB		 7215 if (ioa_cfg->sis64) {
7216 ioarcb->cmd_pkt.cdb[10] =
7217 ((u64) ioa_cfg->host_rrq_dma >> 56) & 0xff;
7218 ioarcb->cmd_pkt.cdb[11] =
7219 ((u64) ioa_cfg->host_rrq_dma >> 48) & 0xff;
7220 ioarcb->cmd_pkt.cdb[12] =
7221 ((u64) ioa_cfg->host_rrq_dma >> 40) & 0xff;
7222 ioarcb->cmd_pkt.cdb[13] =
7223 ((u64) ioa_cfg->host_rrq_dma >> 32) & 0xff;
7224 }
7225
1da177e4
LT		 7226 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7227
7228 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7229
7230 LEAVE;
7231 return IPR_RC_JOB_RETURN;
7232}
7233
7234/**
7235 * ipr_reset_timer_done - Adapter reset timer function
7236 * @ipr_cmd: ipr command struct
7237 *
7238 * Description: This function is used in adapter reset processing
7239 * for timing events. If the reset_cmd pointer in the IOA
7240 * config struct is not this adapter's we are doing nested
7241 * resets and fail_all_ops will take care of freeing the
7242 * command block.
7243 *
7244 * Return value:
7245 * none
7246 **/
7247static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
7248{
7249 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7250 unsigned long lock_flags = 0;
7251
7252 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7253
7254 if (ioa_cfg->reset_cmd == ipr_cmd) {
7255 list_del(&ipr_cmd->queue);
7256 ipr_cmd->done(ipr_cmd);
7257 }
7258
7259 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7260}
7261
7262/**
7263 * ipr_reset_start_timer - Start a timer for adapter reset job
7264 * @ipr_cmd: ipr command struct
7265 * @timeout: timeout value
7266 *
7267 * Description: This function is used in adapter reset processing
7268 * for timing events. If the reset_cmd pointer in the IOA
7269 * config struct is not this adapter's we are doing nested
7270 * resets and fail_all_ops will take care of freeing the
7271 * command block.
7272 *
7273 * Return value:
7274 * none
7275 **/
7276static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
7277 unsigned long timeout)
7278{
7279 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
7280 ipr_cmd->done = ipr_reset_ioa_job;
7281
7282 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7283 ipr_cmd->timer.expires = jiffies + timeout;
7284 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
7285 add_timer(&ipr_cmd->timer);
7286}
7287
7288/**
7289 * ipr_init_ioa_mem - Initialize ioa_cfg control block
7290 * @ioa_cfg: ioa cfg struct
7291 *
7292 * Return value:
7293 * nothing
7294 **/
7295static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
7296{
7297 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
7298
7299 /* Initialize Host RRQ pointers */
7300 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
7301 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
7302 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
7303 ioa_cfg->toggle_bit = 1;
7304
7305 /* Zero out config table */
3e7ebdfa 7306 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
1da177e4
LT		 7307}
7308
214777ba
WB		 7309/**
7310 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
7311 * @ipr_cmd: ipr command struct
7312 *
7313 * Return value:
7314 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7315 **/
7316static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
7317{
7318 unsigned long stage, stage_time;
7319 u32 feedback;
7320 volatile u32 int_reg;
7321 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7322 u64 maskval = 0;
7323
7324 feedback = readl(ioa_cfg->regs.init_feedback_reg);
7325 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
7326 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
7327
7328 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
7329
7330 /* sanity check the stage_time value */
438b0331
WB		 7331 if (stage_time == 0)
7332 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
7333 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
214777ba
WB		 7334 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
7335 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
7336 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
7337
7338 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
7339 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
7340 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7341 stage_time = ioa_cfg->transop_timeout;
7342 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7343 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
1df79ca4
WB		 7344 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7345 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7346 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7347 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7348 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
7349 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
7350 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7351 return IPR_RC_JOB_CONTINUE;
7352 }
214777ba
WB		 7353 }
7354
7355 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7356 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
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 return IPR_RC_JOB_RETURN;
7363}
7364
1da177e4
LT		 7365/**
7366 * ipr_reset_enable_ioa - Enable the IOA following a reset.
7367 * @ipr_cmd: ipr command struct
7368 *
7369 * This function reinitializes some control blocks and
7370 * enables destructive diagnostics on the adapter.
7371 *
7372 * Return value:
7373 * IPR_RC_JOB_RETURN
7374 **/
7375static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
7376{
7377 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7378 volatile u32 int_reg;
7be96900 7379 volatile u64 maskval;
1da177e4
LT		 7380
7381 ENTER;
214777ba 7382 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
1da177e4
LT		 7383 ipr_init_ioa_mem(ioa_cfg);
7384
7385 ioa_cfg->allow_interrupts = 1;
8701f185
WB		 7386 if (ioa_cfg->sis64) {
7387 /* Set the adapter to the correct endian mode. */
7388 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7389 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7390 }
7391
7be96900 7392 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
1da177e4
LT		 7393
7394 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7395 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
214777ba 7396 ioa_cfg->regs.clr_interrupt_mask_reg32);
1da177e4
LT		 7397 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7398 return IPR_RC_JOB_CONTINUE;
7399 }
7400
7401 /* Enable destructive diagnostics on IOA */
214777ba
WB		 7402 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
7403
7be96900
WB		 7404 if (ioa_cfg->sis64) {
7405 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7406 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
7407 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
7408 } else
7409 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
1da177e4 7410
1da177e4
LT		 7411 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7412
7413 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
7414
214777ba
WB		 7415 if (ioa_cfg->sis64) {
7416 ipr_cmd->job_step = ipr_reset_next_stage;
7417 return IPR_RC_JOB_CONTINUE;
7418 }
7419
1da177e4 7420 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
5469cb5b 7421 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
1da177e4
LT		 7422 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7423 ipr_cmd->done = ipr_reset_ioa_job;
7424 add_timer(&ipr_cmd->timer);
7425 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
7426
7427 LEAVE;
7428 return IPR_RC_JOB_RETURN;
7429}
7430
7431/**
7432 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
7433 * @ipr_cmd: ipr command struct
7434 *
7435 * This function is invoked when an adapter dump has run out
7436 * of processing time.
7437 *
7438 * Return value:
7439 * IPR_RC_JOB_CONTINUE
7440 **/
7441static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
7442{
7443 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7444
7445 if (ioa_cfg->sdt_state == GET_DUMP)
41e9a696
BK		 7446 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7447 else if (ioa_cfg->sdt_state == READ_DUMP)
1da177e4
LT		 7448 ioa_cfg->sdt_state = ABORT_DUMP;
7449
7450 ipr_cmd->job_step = ipr_reset_alert;
7451
7452 return IPR_RC_JOB_CONTINUE;
7453}
7454
7455/**
7456 * ipr_unit_check_no_data - Log a unit check/no data error log
7457 * @ioa_cfg: ioa config struct
7458 *
7459 * Logs an error indicating the adapter unit checked, but for some
7460 * reason, we were unable to fetch the unit check buffer.
7461 *
7462 * Return value:
7463 * nothing
7464 **/
7465static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
7466{
7467 ioa_cfg->errors_logged++;
7468 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
7469}
7470
7471/**
7472 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
7473 * @ioa_cfg: ioa config struct
7474 *
7475 * Fetches the unit check buffer from the adapter by clocking the data
7476 * through the mailbox register.
7477 *
7478 * Return value:
7479 * nothing
7480 **/
7481static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
7482{
7483 unsigned long mailbox;
7484 struct ipr_hostrcb *hostrcb;
7485 struct ipr_uc_sdt sdt;
7486 int rc, length;
65f56475 7487 u32 ioasc;
1da177e4
LT		 7488
7489 mailbox = readl(ioa_cfg->ioa_mailbox);
7490
dcbad00e 7491 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
1da177e4
LT		 7492 ipr_unit_check_no_data(ioa_cfg);
7493 return;
7494 }
7495
7496 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
7497 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
7498 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
7499
dcbad00e
WB		 7500 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
7501 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
7502 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
1da177e4
LT		 7503 ipr_unit_check_no_data(ioa_cfg);
7504 return;
7505 }
7506
7507 /* Find length of the first sdt entry (UC buffer) */
dcbad00e
WB		 7508 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
7509 length = be32_to_cpu(sdt.entry[0].end_token);
7510 else
7511 length = (be32_to_cpu(sdt.entry[0].end_token) -
7512 be32_to_cpu(sdt.entry[0].start_token)) &
7513 IPR_FMT2_MBX_ADDR_MASK;
1da177e4
LT		 7514
7515 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
7516 struct ipr_hostrcb, queue);
7517 list_del(&hostrcb->queue);
7518 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
7519
7520 rc = ipr_get_ldump_data_section(ioa_cfg,
dcbad00e 7521 be32_to_cpu(sdt.entry[0].start_token),
1da177e4
LT		 7522 (__be32 *)&hostrcb->hcam,
7523 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
7524
65f56475 7525 if (!rc) {
1da177e4 7526 ipr_handle_log_data(ioa_cfg, hostrcb);
4565e370 7527 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
65f56475
BK		 7528 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
7529 ioa_cfg->sdt_state == GET_DUMP)
7530 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7531 } else
1da177e4
LT		 7532 ipr_unit_check_no_data(ioa_cfg);
7533
7534 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
7535}
7536
110def85
WB		 7537/**
7538 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
7539 * @ipr_cmd: ipr command struct
7540 *
7541 * Description: This function will call to get the unit check buffer.
7542 *
7543 * Return value:
7544 * IPR_RC_JOB_RETURN
7545 **/
7546static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
7547{
7548 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7549
7550 ENTER;
7551 ioa_cfg->ioa_unit_checked = 0;
7552 ipr_get_unit_check_buffer(ioa_cfg);
7553 ipr_cmd->job_step = ipr_reset_alert;
7554 ipr_reset_start_timer(ipr_cmd, 0);
7555
7556 LEAVE;
7557 return IPR_RC_JOB_RETURN;
7558}
7559
1da177e4
LT		 7560/**
7561 * ipr_reset_restore_cfg_space - Restore PCI config space.
7562 * @ipr_cmd: ipr command struct
7563 *
7564 * Description: This function restores the saved PCI config space of
7565 * the adapter, fails all outstanding ops back to the callers, and
7566 * fetches the dump/unit check if applicable to this reset.
7567 *
7568 * Return value:
7569 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7570 **/
7571static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
7572{
7573 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
630ad831 7574 u32 int_reg;
1da177e4
LT		 7575
7576 ENTER;
99c965dd 7577 ioa_cfg->pdev->state_saved = true;
1d3c16a8 7578 pci_restore_state(ioa_cfg->pdev);
1da177e4
LT		 7579
7580 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
96d21f00 7581 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
1da177e4
LT		 7582 return IPR_RC_JOB_CONTINUE;
7583 }
7584
7585 ipr_fail_all_ops(ioa_cfg);
7586
8701f185
WB		 7587 if (ioa_cfg->sis64) {
7588 /* Set the adapter to the correct endian mode. */
7589 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7590 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7591 }
7592
1da177e4 7593 if (ioa_cfg->ioa_unit_checked) {
110def85
WB		 7594 if (ioa_cfg->sis64) {
7595 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
7596 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
7597 return IPR_RC_JOB_RETURN;
7598 } else {
7599 ioa_cfg->ioa_unit_checked = 0;
7600 ipr_get_unit_check_buffer(ioa_cfg);
7601 ipr_cmd->job_step = ipr_reset_alert;
7602 ipr_reset_start_timer(ipr_cmd, 0);
7603 return IPR_RC_JOB_RETURN;
7604 }
1da177e4
LT		 7605 }
7606
7607 if (ioa_cfg->in_ioa_bringdown) {
7608 ipr_cmd->job_step = ipr_ioa_bringdown_done;
7609 } else {
7610 ipr_cmd->job_step = ipr_reset_enable_ioa;
7611
7612 if (GET_DUMP == ioa_cfg->sdt_state) {
41e9a696 7613 ioa_cfg->sdt_state = READ_DUMP;
4d4dd706
KSS		 7614 if (ioa_cfg->sis64)
7615 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
7616 else
7617 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
1da177e4
LT		 7618 ipr_cmd->job_step = ipr_reset_wait_for_dump;
7619 schedule_work(&ioa_cfg->work_q);
7620 return IPR_RC_JOB_RETURN;
7621 }
7622 }
7623
438b0331 7624 LEAVE;
1da177e4
LT		 7625 return IPR_RC_JOB_CONTINUE;
7626}
7627
e619e1a7
BK		 7628/**
7629 * ipr_reset_bist_done - BIST has completed on the adapter.
7630 * @ipr_cmd: ipr command struct
7631 *
7632 * Description: Unblock config space and resume the reset process.
7633 *
7634 * Return value:
7635 * IPR_RC_JOB_CONTINUE
7636 **/
7637static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
7638{
7639 ENTER;
7640 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
7641 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
7642 LEAVE;
7643 return IPR_RC_JOB_CONTINUE;
7644}
7645
1da177e4
LT		 7646/**
7647 * ipr_reset_start_bist - Run BIST on the adapter.
7648 * @ipr_cmd: ipr command struct
7649 *
7650 * Description: This function runs BIST on the adapter, then delays 2 seconds.
7651 *
7652 * Return value:
7653 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7654 **/
7655static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
7656{
7657 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
cb237ef7 7658 int rc = PCIBIOS_SUCCESSFUL;
1da177e4
LT		 7659
7660 ENTER;
b30197d2 7661 pci_block_user_cfg_access(ioa_cfg->pdev);
1da177e4 7662
cb237ef7
WB		 7663 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
7664 writel(IPR_UPROCI_SIS64_START_BIST,
7665 ioa_cfg->regs.set_uproc_interrupt_reg32);
7666 else
7667 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
7668
7669 if (rc == PCIBIOS_SUCCESSFUL) {
e619e1a7 7670 ipr_cmd->job_step = ipr_reset_bist_done;
1da177e4
LT		 7671 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7672 rc = IPR_RC_JOB_RETURN;
cb237ef7
WB		 7673 } else {
7674 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
7675 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7676 rc = IPR_RC_JOB_CONTINUE;
1da177e4
LT		 7677 }
7678
7679 LEAVE;
7680 return rc;
7681}
7682
463fc696
BK		 7683/**
7684 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
7685 * @ipr_cmd: ipr command struct
7686 *
7687 * Description: This clears PCI reset to the adapter and delays two seconds.
7688 *
7689 * Return value:
7690 * IPR_RC_JOB_RETURN
7691 **/
7692static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
7693{
7694 ENTER;
7695 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
7696 ipr_cmd->job_step = ipr_reset_bist_done;
7697 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7698 LEAVE;
7699 return IPR_RC_JOB_RETURN;
7700}
7701
7702/**
7703 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
7704 * @ipr_cmd: ipr command struct
7705 *
7706 * Description: This asserts PCI reset to the adapter.
7707 *
7708 * Return value:
7709 * IPR_RC_JOB_RETURN
7710 **/
7711static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
7712{
7713 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7714 struct pci_dev *pdev = ioa_cfg->pdev;
7715
7716 ENTER;
7717 pci_block_user_cfg_access(pdev);
7718 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
7719 ipr_cmd->job_step = ipr_reset_slot_reset_done;
7720 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
7721 LEAVE;
7722 return IPR_RC_JOB_RETURN;
7723}
7724
1da177e4
LT		 7725/**
7726 * ipr_reset_allowed - Query whether or not IOA can be reset
7727 * @ioa_cfg: ioa config struct
7728 *
7729 * Return value:
7730 * 0 if reset not allowed / non-zero if reset is allowed
7731 **/
7732static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
7733{
7734 volatile u32 temp_reg;
7735
7736 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
7737 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
7738}
7739
7740/**
7741 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
7742 * @ipr_cmd: ipr command struct
7743 *
7744 * Description: This function waits for adapter permission to run BIST,
7745 * then runs BIST. If the adapter does not give permission after a
7746 * reasonable time, we will reset the adapter anyway. The impact of
7747 * resetting the adapter without warning the adapter is the risk of
7748 * losing the persistent error log on the adapter. If the adapter is
7749 * reset while it is writing to the flash on the adapter, the flash
7750 * segment will have bad ECC and be zeroed.
7751 *
7752 * Return value:
7753 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7754 **/
7755static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
7756{
7757 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7758 int rc = IPR_RC_JOB_RETURN;
7759
7760 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
7761 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
7762 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7763 } else {
463fc696 7764 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 7765 rc = IPR_RC_JOB_CONTINUE;
7766 }
7767
7768 return rc;
7769}
7770
7771/**
8701f185 7772 * ipr_reset_alert - Alert the adapter of a pending reset
1da177e4
LT		 7773 * @ipr_cmd: ipr command struct
7774 *
7775 * Description: This function alerts the adapter that it will be reset.
7776 * If memory space is not currently enabled, proceed directly
7777 * to running BIST on the adapter. The timer must always be started
7778 * so we guarantee we do not run BIST from ipr_isr.
7779 *
7780 * Return value:
7781 * IPR_RC_JOB_RETURN
7782 **/
7783static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
7784{
7785 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7786 u16 cmd_reg;
7787 int rc;
7788
7789 ENTER;
7790 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
7791
7792 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
7793 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
214777ba 7794 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
1da177e4
LT		 7795 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
7796 } else {
463fc696 7797 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 7798 }
7799
7800 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
7801 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7802
7803 LEAVE;
7804 return IPR_RC_JOB_RETURN;
7805}
7806
7807/**
7808 * ipr_reset_ucode_download_done - Microcode download completion
7809 * @ipr_cmd: ipr command struct
7810 *
7811 * Description: This function unmaps the microcode download buffer.
7812 *
7813 * Return value:
7814 * IPR_RC_JOB_CONTINUE
7815 **/
7816static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
7817{
7818 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7819 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7820
7821 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
7822 sglist->num_sg, DMA_TO_DEVICE);
7823
7824 ipr_cmd->job_step = ipr_reset_alert;
7825 return IPR_RC_JOB_CONTINUE;
7826}
7827
7828/**
7829 * ipr_reset_ucode_download - Download microcode to the adapter
7830 * @ipr_cmd: ipr command struct
7831 *
7832 * Description: This function checks to see if it there is microcode
7833 * to download to the adapter. If there is, a download is performed.
7834 *
7835 * Return value:
7836 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7837 **/
7838static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
7839{
7840 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7841 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7842
7843 ENTER;
7844 ipr_cmd->job_step = ipr_reset_alert;
7845
7846 if (!sglist)
7847 return IPR_RC_JOB_CONTINUE;
7848
7849 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7850 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7851 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
7852 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
7853 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
7854 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
7855 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
7856
a32c055f
WB		 7857 if (ioa_cfg->sis64)
7858 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
7859 else
7860 ipr_build_ucode_ioadl(ipr_cmd, sglist);
1da177e4
LT		 7861 ipr_cmd->job_step = ipr_reset_ucode_download_done;
7862
7863 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7864 IPR_WRITE_BUFFER_TIMEOUT);
7865
7866 LEAVE;
7867 return IPR_RC_JOB_RETURN;
7868}
7869
7870/**
7871 * ipr_reset_shutdown_ioa - Shutdown the adapter
7872 * @ipr_cmd: ipr command struct
7873 *
7874 * Description: This function issues an adapter shutdown of the
7875 * specified type to the specified adapter as part of the
7876 * adapter reset job.
7877 *
7878 * Return value:
7879 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7880 **/
7881static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
7882{
7883 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7884 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
7885 unsigned long timeout;
7886 int rc = IPR_RC_JOB_CONTINUE;
7887
7888 ENTER;
7889 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
7890 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7891 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7892 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
7893 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
7894
ac09c349
BK		 7895 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
7896 timeout = IPR_SHUTDOWN_TIMEOUT;
1da177e4
LT		 7897 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
7898 timeout = IPR_INTERNAL_TIMEOUT;
ac09c349
BK		 7899 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7900 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
1da177e4 7901 else
ac09c349 7902 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
1da177e4
LT		 7903
7904 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
7905
7906 rc = IPR_RC_JOB_RETURN;
7907 ipr_cmd->job_step = ipr_reset_ucode_download;
7908 } else
7909 ipr_cmd->job_step = ipr_reset_alert;
7910
7911 LEAVE;
7912 return rc;
7913}
7914
7915/**
7916 * ipr_reset_ioa_job - Adapter reset job
7917 * @ipr_cmd: ipr command struct
7918 *
7919 * Description: This function is the job router for the adapter reset job.
7920 *
7921 * Return value:
7922 * none
7923 **/
7924static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
7925{
7926 u32 rc, ioasc;
1da177e4
LT		 7927 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7928
7929 do {
96d21f00 7930 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1da177e4
LT		 7931
7932 if (ioa_cfg->reset_cmd != ipr_cmd) {
7933 /*
7934 * We are doing nested adapter resets and this is
7935 * not the current reset job.
7936 */
7937 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7938 return;
7939 }
7940
7941 if (IPR_IOASC_SENSE_KEY(ioasc)) {
dfed823e
BK		 7942 rc = ipr_cmd->job_step_failed(ipr_cmd);
7943 if (rc == IPR_RC_JOB_RETURN)
7944 return;
1da177e4
LT		 7945 }
7946
7947 ipr_reinit_ipr_cmnd(ipr_cmd);
dfed823e 7948 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
1da177e4
LT		 7949 rc = ipr_cmd->job_step(ipr_cmd);
7950 } while(rc == IPR_RC_JOB_CONTINUE);
7951}
7952
7953/**
7954 * _ipr_initiate_ioa_reset - Initiate an adapter reset
7955 * @ioa_cfg: ioa config struct
7956 * @job_step: first job step of reset job
7957 * @shutdown_type: shutdown type
7958 *
7959 * Description: This function will initiate the reset of the given adapter
7960 * starting at the selected job step.
7961 * If the caller needs to wait on the completion of the reset,
7962 * the caller must sleep on the reset_wait_q.
7963 *
7964 * Return value:
7965 * none
7966 **/
7967static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
7968 int (*job_step) (struct ipr_cmnd *),
7969 enum ipr_shutdown_type shutdown_type)
7970{
7971 struct ipr_cmnd *ipr_cmd;
7972
7973 ioa_cfg->in_reset_reload = 1;
7974 ioa_cfg->allow_cmds = 0;
7975 scsi_block_requests(ioa_cfg->host);
7976
7977 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
7978 ioa_cfg->reset_cmd = ipr_cmd;
7979 ipr_cmd->job_step = job_step;
7980 ipr_cmd->u.shutdown_type = shutdown_type;
7981
7982 ipr_reset_ioa_job(ipr_cmd);
7983}
7984
7985/**
7986 * ipr_initiate_ioa_reset - Initiate an adapter reset
7987 * @ioa_cfg: ioa config struct
7988 * @shutdown_type: shutdown type
7989 *
7990 * Description: This function will initiate the reset of the given adapter.
7991 * If the caller needs to wait on the completion of the reset,
7992 * the caller must sleep on the reset_wait_q.
7993 *
7994 * Return value:
7995 * none
7996 **/
7997static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
7998 enum ipr_shutdown_type shutdown_type)
7999{
8000 if (ioa_cfg->ioa_is_dead)
8001 return;
8002
41e9a696
BK		 8003 if (ioa_cfg->in_reset_reload) {
8004 if (ioa_cfg->sdt_state == GET_DUMP)
8005 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8006 else if (ioa_cfg->sdt_state == READ_DUMP)
8007 ioa_cfg->sdt_state = ABORT_DUMP;
8008 }
1da177e4
LT		 8009
8010 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
8011 dev_err(&ioa_cfg->pdev->dev,
8012 "IOA taken offline - error recovery failed\n");
8013
8014 ioa_cfg->reset_retries = 0;
8015 ioa_cfg->ioa_is_dead = 1;
8016
8017 if (ioa_cfg->in_ioa_bringdown) {
8018 ioa_cfg->reset_cmd = NULL;
8019 ioa_cfg->in_reset_reload = 0;
8020 ipr_fail_all_ops(ioa_cfg);
8021 wake_up_all(&ioa_cfg->reset_wait_q);
8022
8023 spin_unlock_irq(ioa_cfg->host->host_lock);
8024 scsi_unblock_requests(ioa_cfg->host);
8025 spin_lock_irq(ioa_cfg->host->host_lock);
8026 return;
8027 } else {
8028 ioa_cfg->in_ioa_bringdown = 1;
8029 shutdown_type = IPR_SHUTDOWN_NONE;
8030 }
8031 }
8032
8033 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
8034 shutdown_type);
8035}
8036
f8a88b19
LV		 8037/**
8038 * ipr_reset_freeze - Hold off all I/O activity
8039 * @ipr_cmd: ipr command struct
8040 *
8041 * Description: If the PCI slot is frozen, hold off all I/O
8042 * activity; then, as soon as the slot is available again,
8043 * initiate an adapter reset.
8044 */
8045static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
8046{
8047 /* Disallow new interrupts, avoid loop */
8048 ipr_cmd->ioa_cfg->allow_interrupts = 0;
8049 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
8050 ipr_cmd->done = ipr_reset_ioa_job;
8051 return IPR_RC_JOB_RETURN;
8052}
8053
8054/**
8055 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
8056 * @pdev: PCI device struct
8057 *
8058 * Description: This routine is called to tell us that the PCI bus
8059 * is down. Can't do anything here, except put the device driver
8060 * into a holding pattern, waiting for the PCI bus to come back.
8061 */
8062static void ipr_pci_frozen(struct pci_dev *pdev)
8063{
8064 unsigned long flags = 0;
8065 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8066
8067 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8068 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
8069 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8070}
8071
8072/**
8073 * ipr_pci_slot_reset - Called when PCI slot has been reset.
8074 * @pdev: PCI device struct
8075 *
8076 * Description: This routine is called by the pci error recovery
8077 * code after the PCI slot has been reset, just before we
8078 * should resume normal operations.
8079 */
8080static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
8081{
8082 unsigned long flags = 0;
8083 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8084
8085 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
463fc696
BK		 8086 if (ioa_cfg->needs_warm_reset)
8087 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8088 else
8089 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
8090 IPR_SHUTDOWN_NONE);
f8a88b19
LV		 8091 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8092 return PCI_ERS_RESULT_RECOVERED;
8093}
8094
8095/**
8096 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
8097 * @pdev: PCI device struct
8098 *
8099 * Description: This routine is called when the PCI bus has
8100 * permanently failed.
8101 */
8102static void ipr_pci_perm_failure(struct pci_dev *pdev)
8103{
8104 unsigned long flags = 0;
8105 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8106
8107 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8108 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8109 ioa_cfg->sdt_state = ABORT_DUMP;
8110 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
8111 ioa_cfg->in_ioa_bringdown = 1;
6ff63896 8112 ioa_cfg->allow_cmds = 0;
f8a88b19
LV		 8113 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8114 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8115}
8116
8117/**
8118 * ipr_pci_error_detected - Called when a PCI error is detected.
8119 * @pdev: PCI device struct
8120 * @state: PCI channel state
8121 *
8122 * Description: Called when a PCI error is detected.
8123 *
8124 * Return value:
8125 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
8126 */
8127static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
8128 pci_channel_state_t state)
8129{
8130 switch (state) {
8131 case pci_channel_io_frozen:
8132 ipr_pci_frozen(pdev);
8133 return PCI_ERS_RESULT_NEED_RESET;
8134 case pci_channel_io_perm_failure:
8135 ipr_pci_perm_failure(pdev);
8136 return PCI_ERS_RESULT_DISCONNECT;
8137 break;
8138 default:
8139 break;
8140 }
8141 return PCI_ERS_RESULT_NEED_RESET;
8142}
8143
1da177e4
LT		 8144/**
8145 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
8146 * @ioa_cfg: ioa cfg struct
8147 *
8148 * Description: This is the second phase of adapter intialization
8149 * This function takes care of initilizing the adapter to the point
8150 * where it can accept new commands.
8151
8152 * Return value:
b1c11812 8153 * 0 on success / -EIO on failure
1da177e4
LT		 8154 **/
8155static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
8156{
8157 int rc = 0;
8158 unsigned long host_lock_flags = 0;
8159
8160 ENTER;
8161 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8162 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
ce155cce
BK		 8163 if (ioa_cfg->needs_hard_reset) {
8164 ioa_cfg->needs_hard_reset = 0;
8165 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8166 } else
8167 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
8168 IPR_SHUTDOWN_NONE);
1da177e4
LT		 8169
8170 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8171 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8172 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8173
8174 if (ioa_cfg->ioa_is_dead) {
8175 rc = -EIO;
8176 } else if (ipr_invalid_adapter(ioa_cfg)) {
8177 if (!ipr_testmode)
8178 rc = -EIO;
8179
8180 dev_err(&ioa_cfg->pdev->dev,
8181 "Adapter not supported in this hardware configuration.\n");
8182 }
8183
8184 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8185
8186 LEAVE;
8187 return rc;
8188}
8189
8190/**
8191 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
8192 * @ioa_cfg: ioa config struct
8193 *
8194 * Return value:
8195 * none
8196 **/
8197static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8198{
8199 int i;
8200
8201 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8202 if (ioa_cfg->ipr_cmnd_list[i])
8203 pci_pool_free(ioa_cfg->ipr_cmd_pool,
8204 ioa_cfg->ipr_cmnd_list[i],
8205 ioa_cfg->ipr_cmnd_list_dma[i]);
8206
8207 ioa_cfg->ipr_cmnd_list[i] = NULL;
8208 }
8209
8210 if (ioa_cfg->ipr_cmd_pool)
8211 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
8212
8213 ioa_cfg->ipr_cmd_pool = NULL;
8214}
8215
8216/**
8217 * ipr_free_mem - Frees memory allocated for an adapter
8218 * @ioa_cfg: ioa cfg struct
8219 *
8220 * Return value:
8221 * nothing
8222 **/
8223static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
8224{
8225 int i;
8226
8227 kfree(ioa_cfg->res_entries);
8228 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
8229 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8230 ipr_free_cmd_blks(ioa_cfg);
8231 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
8232 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
3e7ebdfa
WB		 8233 pci_free_consistent(ioa_cfg->pdev, ioa_cfg->cfg_table_size,
8234 ioa_cfg->u.cfg_table,
1da177e4
LT		 8235 ioa_cfg->cfg_table_dma);
8236
8237 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8238 pci_free_consistent(ioa_cfg->pdev,
8239 sizeof(struct ipr_hostrcb),
8240 ioa_cfg->hostrcb[i],
8241 ioa_cfg->hostrcb_dma[i]);
8242 }
8243
8244 ipr_free_dump(ioa_cfg);
1da177e4
LT		 8245 kfree(ioa_cfg->trace);
8246}
8247
8248/**
8249 * ipr_free_all_resources - Free all allocated resources for an adapter.
8250 * @ipr_cmd: ipr command struct
8251 *
8252 * This function frees all allocated resources for the
8253 * specified adapter.
8254 *
8255 * Return value:
8256 * none
8257 **/
8258static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
8259{
8260 struct pci_dev *pdev = ioa_cfg->pdev;
8261
8262 ENTER;
8263 free_irq(pdev->irq, ioa_cfg);
5a9ef25b 8264 pci_disable_msi(pdev);
1da177e4
LT		 8265 iounmap(ioa_cfg->hdw_dma_regs);
8266 pci_release_regions(pdev);
8267 ipr_free_mem(ioa_cfg);
8268 scsi_host_put(ioa_cfg->host);
8269 pci_disable_device(pdev);
8270 LEAVE;
8271}
8272
8273/**
8274 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
8275 * @ioa_cfg: ioa config struct
8276 *
8277 * Return value:
8278 * 0 on success / -ENOMEM on allocation failure
8279 **/
8280static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8281{
8282 struct ipr_cmnd *ipr_cmd;
8283 struct ipr_ioarcb *ioarcb;
8284 dma_addr_t dma_addr;
8285 int i;
8286
8287 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
a32c055f 8288 sizeof(struct ipr_cmnd), 16, 0);
1da177e4
LT		 8289
8290 if (!ioa_cfg->ipr_cmd_pool)
8291 return -ENOMEM;
8292
8293 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
e94b1766 8294 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
1da177e4
LT		 8295
8296 if (!ipr_cmd) {
8297 ipr_free_cmd_blks(ioa_cfg);
8298 return -ENOMEM;
8299 }
8300
8301 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
8302 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
8303 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
8304
8305 ioarcb = &ipr_cmd->ioarcb;
a32c055f
WB		 8306 ipr_cmd->dma_addr = dma_addr;
8307 if (ioa_cfg->sis64)
8308 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
8309 else
8310 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
8311
1da177e4 8312 ioarcb->host_response_handle = cpu_to_be32(i << 2);
a32c055f
WB		 8313 if (ioa_cfg->sis64) {
8314 ioarcb->u.sis64_addr_data.data_ioadl_addr =
8315 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
8316 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
96d21f00 8317 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
a32c055f
WB		 8318 } else {
8319 ioarcb->write_ioadl_addr =
8320 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
8321 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
8322 ioarcb->ioasa_host_pci_addr =
96d21f00 8323 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
a32c055f 8324 }
1da177e4
LT		 8325 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
8326 ipr_cmd->cmd_index = i;
8327 ipr_cmd->ioa_cfg = ioa_cfg;
8328 ipr_cmd->sense_buffer_dma = dma_addr +
8329 offsetof(struct ipr_cmnd, sense_buffer);
8330
8331 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
8332 }
8333
8334 return 0;
8335}
8336
8337/**
8338 * ipr_alloc_mem - Allocate memory for an adapter
8339 * @ioa_cfg: ioa config struct
8340 *
8341 * Return value:
8342 * 0 on success / non-zero for error
8343 **/
8344static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
8345{
8346 struct pci_dev *pdev = ioa_cfg->pdev;
8347 int i, rc = -ENOMEM;
8348
8349 ENTER;
0bc42e35 8350 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
3e7ebdfa 8351 ioa_cfg->max_devs_supported, GFP_KERNEL);
1da177e4
LT		 8352
8353 if (!ioa_cfg->res_entries)
8354 goto out;
8355
3e7ebdfa
WB		 8356 if (ioa_cfg->sis64) {
8357 ioa_cfg->target_ids = kzalloc(sizeof(unsigned long) *
8358 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8359 ioa_cfg->array_ids = kzalloc(sizeof(unsigned long) *
8360 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8361 ioa_cfg->vset_ids = kzalloc(sizeof(unsigned long) *
8362 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8363 }
8364
8365 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
1da177e4 8366 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
3e7ebdfa
WB		 8367 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
8368 }
1da177e4
LT		 8369
8370 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
8371 sizeof(struct ipr_misc_cbs),
8372 &ioa_cfg->vpd_cbs_dma);
8373
8374 if (!ioa_cfg->vpd_cbs)
8375 goto out_free_res_entries;
8376
8377 if (ipr_alloc_cmd_blks(ioa_cfg))
8378 goto out_free_vpd_cbs;
8379
8380 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
8381 sizeof(u32) * IPR_NUM_CMD_BLKS,
8382 &ioa_cfg->host_rrq_dma);
8383
8384 if (!ioa_cfg->host_rrq)
8385 goto out_ipr_free_cmd_blocks;
8386
3e7ebdfa
WB		 8387 ioa_cfg->u.cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
8388 ioa_cfg->cfg_table_size,
8389 &ioa_cfg->cfg_table_dma);
1da177e4 8390
3e7ebdfa 8391 if (!ioa_cfg->u.cfg_table)
1da177e4
LT		 8392 goto out_free_host_rrq;
8393
8394 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8395 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
8396 sizeof(struct ipr_hostrcb),
8397 &ioa_cfg->hostrcb_dma[i]);
8398
8399 if (!ioa_cfg->hostrcb[i])
8400 goto out_free_hostrcb_dma;
8401
8402 ioa_cfg->hostrcb[i]->hostrcb_dma =
8403 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
49dc6a18 8404 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
1da177e4
LT		 8405 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
8406 }
8407
0bc42e35 8408 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
1da177e4
LT		 8409 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
8410
8411 if (!ioa_cfg->trace)
8412 goto out_free_hostrcb_dma;
8413
1da177e4
LT		 8414 rc = 0;
8415out:
8416 LEAVE;
8417 return rc;
8418
8419out_free_hostrcb_dma:
8420 while (i-- > 0) {
8421 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
8422 ioa_cfg->hostrcb[i],
8423 ioa_cfg->hostrcb_dma[i]);
8424 }
3e7ebdfa
WB		 8425 pci_free_consistent(pdev, ioa_cfg->cfg_table_size,
8426 ioa_cfg->u.cfg_table,
8427 ioa_cfg->cfg_table_dma);
1da177e4
LT		 8428out_free_host_rrq:
8429 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
8430 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
8431out_ipr_free_cmd_blocks:
8432 ipr_free_cmd_blks(ioa_cfg);
8433out_free_vpd_cbs:
8434 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
8435 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8436out_free_res_entries:
8437 kfree(ioa_cfg->res_entries);
8438 goto out;
8439}
8440
8441/**
8442 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
8443 * @ioa_cfg: ioa config struct
8444 *
8445 * Return value:
8446 * none
8447 **/
8448static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
8449{
8450 int i;
8451
8452 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
8453 ioa_cfg->bus_attr[i].bus = i;
8454 ioa_cfg->bus_attr[i].qas_enabled = 0;
8455 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
8456 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
8457 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
8458 else
8459 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
8460 }
8461}
8462
8463/**
8464 * ipr_init_ioa_cfg - Initialize IOA config struct
8465 * @ioa_cfg: ioa config struct
8466 * @host: scsi host struct
8467 * @pdev: PCI dev struct
8468 *
8469 * Return value:
8470 * none
8471 **/
8472static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
8473 struct Scsi_Host *host, struct pci_dev *pdev)
8474{
8475 const struct ipr_interrupt_offsets *p;
8476 struct ipr_interrupts *t;
8477 void __iomem *base;
8478
8479 ioa_cfg->host = host;
8480 ioa_cfg->pdev = pdev;
8481 ioa_cfg->log_level = ipr_log_level;
3d1d0da6 8482 ioa_cfg->doorbell = IPR_DOORBELL;
1da177e4
LT		 8483 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
8484 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
8485 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
8486 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
8487 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
8488 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
8489 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
8490 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
8491
8492 INIT_LIST_HEAD(&ioa_cfg->free_q);
8493 INIT_LIST_HEAD(&ioa_cfg->pending_q);
8494 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
8495 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
8496 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
8497 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
c4028958 8498 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
1da177e4 8499 init_waitqueue_head(&ioa_cfg->reset_wait_q);
95fecd90 8500 init_waitqueue_head(&ioa_cfg->msi_wait_q);
1da177e4
LT		 8501 ioa_cfg->sdt_state = INACTIVE;
8502
8503 ipr_initialize_bus_attr(ioa_cfg);
3e7ebdfa 8504 ioa_cfg->max_devs_supported = ipr_max_devs;
1da177e4 8505
3e7ebdfa
WB		 8506 if (ioa_cfg->sis64) {
8507 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
8508 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
8509 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
8510 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
8511 } else {
8512 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
8513 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
8514 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
8515 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
8516 }
1da177e4
LT		 8517 host->max_channel = IPR_MAX_BUS_TO_SCAN;
8518 host->unique_id = host->host_no;
8519 host->max_cmd_len = IPR_MAX_CDB_LEN;
8520 pci_set_drvdata(pdev, ioa_cfg);
8521
8522 p = &ioa_cfg->chip_cfg->regs;
8523 t = &ioa_cfg->regs;
8524 base = ioa_cfg->hdw_dma_regs;
8525
8526 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
8527 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
214777ba 8528 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
1da177e4 8529 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
214777ba 8530 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
1da177e4 8531 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
214777ba 8532 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
1da177e4 8533 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
214777ba 8534 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
1da177e4
LT		 8535 t->ioarrin_reg = base + p->ioarrin_reg;
8536 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
214777ba 8537 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
1da177e4 8538 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
214777ba 8539 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
1da177e4 8540 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
214777ba 8541 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
dcbad00e
WB		 8542
8543 if (ioa_cfg->sis64) {
214777ba 8544 t->init_feedback_reg = base + p->init_feedback_reg;
dcbad00e
WB		 8545 t->dump_addr_reg = base + p->dump_addr_reg;
8546 t->dump_data_reg = base + p->dump_data_reg;
8701f185 8547 t->endian_swap_reg = base + p->endian_swap_reg;
dcbad00e 8548 }
1da177e4
LT		 8549}
8550
8551/**
1be7bd82 8552 * ipr_get_chip_info - Find adapter chip information
1da177e4
LT		 8553 * @dev_id: PCI device id struct
8554 *
8555 * Return value:
1be7bd82 8556 * ptr to chip information on success / NULL on failure
1da177e4 8557 **/
1be7bd82
WB		 8558static const struct ipr_chip_t * __devinit
8559ipr_get_chip_info(const struct pci_device_id *dev_id)
1da177e4
LT		 8560{
8561 int i;
8562
1da177e4
LT		 8563 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
8564 if (ipr_chip[i].vendor == dev_id->vendor &&
8565 ipr_chip[i].device == dev_id->device)
1be7bd82 8566 return &ipr_chip[i];
1da177e4
LT		 8567 return NULL;
8568}
8569
95fecd90
WB		 8570/**
8571 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
8572 * @pdev: PCI device struct
8573 *
8574 * Description: Simply set the msi_received flag to 1 indicating that
8575 * Message Signaled Interrupts are supported.
8576 *
8577 * Return value:
8578 * 0 on success / non-zero on failure
8579 **/
8580static irqreturn_t __devinit ipr_test_intr(int irq, void *devp)
8581{
8582 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
8583 unsigned long lock_flags = 0;
8584 irqreturn_t rc = IRQ_HANDLED;
8585
8586 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8587
8588 ioa_cfg->msi_received = 1;
8589 wake_up(&ioa_cfg->msi_wait_q);
8590
8591 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8592 return rc;
8593}
8594
8595/**
8596 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
8597 * @pdev: PCI device struct
8598 *
8599 * Description: The return value from pci_enable_msi() can not always be
8600 * trusted. This routine sets up and initiates a test interrupt to determine
8601 * if the interrupt is received via the ipr_test_intr() service routine.
8602 * If the tests fails, the driver will fall back to LSI.
8603 *
8604 * Return value:
8605 * 0 on success / non-zero on failure
8606 **/
8607static int __devinit ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg,
8608 struct pci_dev *pdev)
8609{
8610 int rc;
8611 volatile u32 int_reg;
8612 unsigned long lock_flags = 0;
8613
8614 ENTER;
8615
8616 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8617 init_waitqueue_head(&ioa_cfg->msi_wait_q);
8618 ioa_cfg->msi_received = 0;
8619 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
214777ba 8620 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
95fecd90
WB		 8621 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8622 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8623
8624 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
8625 if (rc) {
8626 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
8627 return rc;
8628 } else if (ipr_debug)
8629 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
8630
214777ba 8631 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
95fecd90
WB		 8632 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8633 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
8634 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8635
8636 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8637 if (!ioa_cfg->msi_received) {
8638 /* MSI test failed */
8639 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
8640 rc = -EOPNOTSUPP;
8641 } else if (ipr_debug)
8642 dev_info(&pdev->dev, "MSI test succeeded.\n");
8643
8644 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8645
8646 free_irq(pdev->irq, ioa_cfg);
8647
8648 LEAVE;
8649
8650 return rc;
8651}
8652
1da177e4
LT		 8653/**
8654 * ipr_probe_ioa - Allocates memory and does first stage of initialization
8655 * @pdev: PCI device struct
8656 * @dev_id: PCI device id struct
8657 *
8658 * Return value:
8659 * 0 on success / non-zero on failure
8660 **/
8661static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
8662 const struct pci_device_id *dev_id)
8663{
8664 struct ipr_ioa_cfg *ioa_cfg;
8665 struct Scsi_Host *host;
8666 unsigned long ipr_regs_pci;
8667 void __iomem *ipr_regs;
a2a65a3e 8668 int rc = PCIBIOS_SUCCESSFUL;
473b1e8e 8669 volatile u32 mask, uproc, interrupts;
1da177e4
LT		 8670
8671 ENTER;
8672
8673 if ((rc = pci_enable_device(pdev))) {
8674 dev_err(&pdev->dev, "Cannot enable adapter\n");
8675 goto out;
8676 }
8677
8678 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
8679
8680 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
8681
8682 if (!host) {
8683 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
8684 rc = -ENOMEM;
8685 goto out_disable;
8686 }
8687
8688 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
8689 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
35a39691
BK		 8690 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
8691 sata_port_info.flags, &ipr_sata_ops);
1da177e4 8692
1be7bd82 8693 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
1da177e4 8694
1be7bd82 8695 if (!ioa_cfg->ipr_chip) {
1da177e4
LT		 8696 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
8697 dev_id->vendor, dev_id->device);
8698 goto out_scsi_host_put;
8699 }
8700
a32c055f
WB		 8701 /* set SIS 32 or SIS 64 */
8702 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
1be7bd82
WB		 8703 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
8704
5469cb5b
BK		 8705 if (ipr_transop_timeout)
8706 ioa_cfg->transop_timeout = ipr_transop_timeout;
8707 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
8708 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
8709 else
8710 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
8711
44c10138 8712 ioa_cfg->revid = pdev->revision;
463fc696 8713
1da177e4
LT		 8714 ipr_regs_pci = pci_resource_start(pdev, 0);
8715
8716 rc = pci_request_regions(pdev, IPR_NAME);
8717 if (rc < 0) {
8718 dev_err(&pdev->dev,
8719 "Couldn't register memory range of registers\n");
8720 goto out_scsi_host_put;
8721 }
8722
25729a7f 8723 ipr_regs = pci_ioremap_bar(pdev, 0);
1da177e4
LT		 8724
8725 if (!ipr_regs) {
8726 dev_err(&pdev->dev,
8727 "Couldn't map memory range of registers\n");
8728 rc = -ENOMEM;
8729 goto out_release_regions;
8730 }
8731
8732 ioa_cfg->hdw_dma_regs = ipr_regs;
8733 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
8734 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
8735
8736 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
8737
8738 pci_set_master(pdev);
8739
a32c055f
WB		 8740 if (ioa_cfg->sis64) {
8741 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
8742 if (rc < 0) {
8743 dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n");
8744 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8745 }
8746
8747 } else
8748 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8749
1da177e4
LT		 8750 if (rc < 0) {
8751 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
8752 goto cleanup_nomem;
8753 }
8754
8755 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
8756 ioa_cfg->chip_cfg->cache_line_size);
8757
8758 if (rc != PCIBIOS_SUCCESSFUL) {
8759 dev_err(&pdev->dev, "Write of cache line size failed\n");
8760 rc = -EIO;
8761 goto cleanup_nomem;
8762 }
8763
95fecd90 8764 /* Enable MSI style interrupts if they are supported. */
1be7bd82 8765 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) {
95fecd90
WB		 8766 rc = ipr_test_msi(ioa_cfg, pdev);
8767 if (rc == -EOPNOTSUPP)
8768 pci_disable_msi(pdev);
8769 else if (rc)
8770 goto out_msi_disable;
8771 else
8772 dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq);
8773 } else if (ipr_debug)
8774 dev_info(&pdev->dev, "Cannot enable MSI.\n");
8775
1da177e4
LT		 8776 /* Save away PCI config space for use following IOA reset */
8777 rc = pci_save_state(pdev);
8778
8779 if (rc != PCIBIOS_SUCCESSFUL) {
8780 dev_err(&pdev->dev, "Failed to save PCI config space\n");
8781 rc = -EIO;
f170c684 8782 goto out_msi_disable;
1da177e4
LT		 8783 }
8784
8785 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
f170c684 8786 goto out_msi_disable;
1da177e4
LT		 8787
8788 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
f170c684 8789 goto out_msi_disable;
1da177e4 8790
3e7ebdfa
WB		 8791 if (ioa_cfg->sis64)
8792 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
8793 + ((sizeof(struct ipr_config_table_entry64)
8794 * ioa_cfg->max_devs_supported)));
8795 else
8796 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
8797 + ((sizeof(struct ipr_config_table_entry)
8798 * ioa_cfg->max_devs_supported)));
8799
1da177e4
LT		 8800 rc = ipr_alloc_mem(ioa_cfg);
8801 if (rc < 0) {
8802 dev_err(&pdev->dev,
8803 "Couldn't allocate enough memory for device driver!\n");
f170c684 8804 goto out_msi_disable;
1da177e4
LT		 8805 }
8806
ce155cce
BK		 8807 /*
8808 * If HRRQ updated interrupt is not masked, or reset alert is set,
8809 * the card is in an unknown state and needs a hard reset
8810 */
214777ba
WB		 8811 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
8812 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
8813 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
ce155cce
BK		 8814 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
8815 ioa_cfg->needs_hard_reset = 1;
5d7c20b7 8816 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
473b1e8e
BK		 8817 ioa_cfg->needs_hard_reset = 1;
8818 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
8819 ioa_cfg->ioa_unit_checked = 1;
ce155cce 8820
1da177e4 8821 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
95fecd90
WB		 8822 rc = request_irq(pdev->irq, ipr_isr,
8823 ioa_cfg->msi_received ? 0 : IRQF_SHARED,
8824 IPR_NAME, ioa_cfg);
1da177e4
LT		 8825
8826 if (rc) {
8827 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
8828 pdev->irq, rc);
8829 goto cleanup_nolog;
8830 }
8831
463fc696
BK		 8832 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
8833 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
8834 ioa_cfg->needs_warm_reset = 1;
8835 ioa_cfg->reset = ipr_reset_slot_reset;
8836 } else
8837 ioa_cfg->reset = ipr_reset_start_bist;
8838
1da177e4
LT		 8839 spin_lock(&ipr_driver_lock);
8840 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
8841 spin_unlock(&ipr_driver_lock);
8842
8843 LEAVE;
8844out:
8845 return rc;
8846
8847cleanup_nolog:
8848 ipr_free_mem(ioa_cfg);
95fecd90
WB		 8849out_msi_disable:
8850 pci_disable_msi(pdev);
f170c684
JL		 8851cleanup_nomem:
8852 iounmap(ipr_regs);
1da177e4
LT		 8853out_release_regions:
8854 pci_release_regions(pdev);
8855out_scsi_host_put:
8856 scsi_host_put(host);
8857out_disable:
8858 pci_disable_device(pdev);
8859 goto out;
8860}
8861
8862/**
8863 * ipr_scan_vsets - Scans for VSET devices
8864 * @ioa_cfg: ioa config struct
8865 *
8866 * Description: Since the VSET resources do not follow SAM in that we can have
8867 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
8868 *
8869 * Return value:
8870 * none
8871 **/
8872static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
8873{
8874 int target, lun;
8875
8876 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
8877 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
8878 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
8879}
8880
8881/**
8882 * ipr_initiate_ioa_bringdown - Bring down an adapter
8883 * @ioa_cfg: ioa config struct
8884 * @shutdown_type: shutdown type
8885 *
8886 * Description: This function will initiate bringing down the adapter.
8887 * This consists of issuing an IOA shutdown to the adapter
8888 * to flush the cache, and running BIST.
8889 * If the caller needs to wait on the completion of the reset,
8890 * the caller must sleep on the reset_wait_q.
8891 *
8892 * Return value:
8893 * none
8894 **/
8895static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
8896 enum ipr_shutdown_type shutdown_type)
8897{
8898 ENTER;
8899 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8900 ioa_cfg->sdt_state = ABORT_DUMP;
8901 ioa_cfg->reset_retries = 0;
8902 ioa_cfg->in_ioa_bringdown = 1;
8903 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
8904 LEAVE;
8905}
8906
8907/**
8908 * __ipr_remove - Remove a single adapter
8909 * @pdev: pci device struct
8910 *
8911 * Adapter hot plug remove entry point.
8912 *
8913 * Return value:
8914 * none
8915 **/
8916static void __ipr_remove(struct pci_dev *pdev)
8917{
8918 unsigned long host_lock_flags = 0;
8919 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8920 ENTER;
8921
8922 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
970ea294
BK		 8923 while(ioa_cfg->in_reset_reload) {
8924 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8925 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8926 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8927 }
8928
1da177e4
LT		 8929 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
8930
8931 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8932 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
a684b8da 8933 flush_work_sync(&ioa_cfg->work_q);
1da177e4
LT		 8934 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8935
8936 spin_lock(&ipr_driver_lock);
8937 list_del(&ioa_cfg->queue);
8938 spin_unlock(&ipr_driver_lock);
8939
8940 if (ioa_cfg->sdt_state == ABORT_DUMP)
8941 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8942 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8943
8944 ipr_free_all_resources(ioa_cfg);
8945
8946 LEAVE;
8947}
8948
8949/**
8950 * ipr_remove - IOA hot plug remove entry point
8951 * @pdev: pci device struct
8952 *
8953 * Adapter hot plug remove entry point.
8954 *
8955 * Return value:
8956 * none
8957 **/
f381642d 8958static void __devexit ipr_remove(struct pci_dev *pdev)
1da177e4
LT		 8959{
8960 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8961
8962 ENTER;
8963
ee959b00 8964 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4 8965 &ipr_trace_attr);
ee959b00 8966 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 8967 &ipr_dump_attr);
8968 scsi_remove_host(ioa_cfg->host);
8969
8970 __ipr_remove(pdev);
8971
8972 LEAVE;
8973}
8974
8975/**
8976 * ipr_probe - Adapter hot plug add entry point
8977 *
8978 * Return value:
8979 * 0 on success / non-zero on failure
8980 **/
8981static int __devinit ipr_probe(struct pci_dev *pdev,
8982 const struct pci_device_id *dev_id)
8983{
8984 struct ipr_ioa_cfg *ioa_cfg;
8985 int rc;
8986
8987 rc = ipr_probe_ioa(pdev, dev_id);
8988
8989 if (rc)
8990 return rc;
8991
8992 ioa_cfg = pci_get_drvdata(pdev);
8993 rc = ipr_probe_ioa_part2(ioa_cfg);
8994
8995 if (rc) {
8996 __ipr_remove(pdev);
8997 return rc;
8998 }
8999
9000 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
9001
9002 if (rc) {
9003 __ipr_remove(pdev);
9004 return rc;
9005 }
9006
ee959b00 9007 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 9008 &ipr_trace_attr);
9009
9010 if (rc) {
9011 scsi_remove_host(ioa_cfg->host);
9012 __ipr_remove(pdev);
9013 return rc;
9014 }
9015
ee959b00 9016 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 9017 &ipr_dump_attr);
9018
9019 if (rc) {
ee959b00 9020 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 9021 &ipr_trace_attr);
9022 scsi_remove_host(ioa_cfg->host);
9023 __ipr_remove(pdev);
9024 return rc;
9025 }
9026
9027 scsi_scan_host(ioa_cfg->host);
9028 ipr_scan_vsets(ioa_cfg);
9029 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
9030 ioa_cfg->allow_ml_add_del = 1;
11cd8f12 9031 ioa_cfg->host->max_channel = IPR_VSET_BUS;
1da177e4
LT		 9032 schedule_work(&ioa_cfg->work_q);
9033 return 0;
9034}
9035
9036/**
9037 * ipr_shutdown - Shutdown handler.
d18c3db5 9038 * @pdev: pci device struct
1da177e4
LT		 9039 *
9040 * This function is invoked upon system shutdown/reboot. It will issue
9041 * an adapter shutdown to the adapter to flush the write cache.
9042 *
9043 * Return value:
9044 * none
9045 **/
d18c3db5 9046static void ipr_shutdown(struct pci_dev *pdev)
1da177e4 9047{
d18c3db5 9048 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
1da177e4
LT		 9049 unsigned long lock_flags = 0;
9050
9051 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 9052 while(ioa_cfg->in_reset_reload) {
9053 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9054 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9055 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9056 }
9057
1da177e4
LT		 9058 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
9059 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9060 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9061}
9062
9063static struct pci_device_id ipr_pci_table[] __devinitdata = {
9064 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 9065 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
1da177e4 9066 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 9067 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
1da177e4 9068 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 9069 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
1da177e4 9070 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 9071 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
1da177e4 9072 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 9073 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
1da177e4 9074 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 9075 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
1da177e4 9076 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 9077 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
86f51436 9078 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
5469cb5b
BK		 9079 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
9080 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 9081 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
6d84c944 9082 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 9083 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
22d2e402
BK		 9084 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
9085 IPR_USE_LONG_TRANSOP_TIMEOUT },
60e7486b 9086 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
5469cb5b
BK		 9087 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
9088 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 9089 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
6d84c944 9090 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 9091 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
22d2e402
BK		 9092 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
9093 IPR_USE_LONG_TRANSOP_TIMEOUT},
60e7486b 9094 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
5469cb5b
BK		 9095 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
9096 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c 9097 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
22d2e402
BK		 9098 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
9099 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c
BK		 9100 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9101 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
b0f56d3d
WB		 9102 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9103 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
60e7486b 9104 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
5469cb5b 9105 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
463fc696 9106 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
1da177e4 9107 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6d84c944 9108 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
1da177e4 9109 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6d84c944 9110 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
86f51436 9111 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 9112 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
9113 IPR_USE_LONG_TRANSOP_TIMEOUT },
60e7486b 9114 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 9115 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
9116 IPR_USE_LONG_TRANSOP_TIMEOUT },
d7b4627f
WB		 9117 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9118 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
9119 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9120 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
9121 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9122 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
32622bde
WB		 9123 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9124 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
d7b4627f
WB		 9125 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9126 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
9127 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9128 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
9129 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9130 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
9131 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9132 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0, 0 },
9133 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9134 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
1da177e4
LT		 9135 { }
9136};
9137MODULE_DEVICE_TABLE(pci, ipr_pci_table);
9138
f8a88b19
LV		 9139static struct pci_error_handlers ipr_err_handler = {
9140 .error_detected = ipr_pci_error_detected,
9141 .slot_reset = ipr_pci_slot_reset,
9142};
9143
1da177e4
LT		 9144static struct pci_driver ipr_driver = {
9145 .name = IPR_NAME,
9146 .id_table = ipr_pci_table,
9147 .probe = ipr_probe,
f381642d 9148 .remove = __devexit_p(ipr_remove),
d18c3db5 9149 .shutdown = ipr_shutdown,
f8a88b19 9150 .err_handler = &ipr_err_handler,
1da177e4
LT		 9151};
9152
f72919ec
WB		 9153/**
9154 * ipr_halt_done - Shutdown prepare completion
9155 *
9156 * Return value:
9157 * none
9158 **/
9159static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
9160{
9161 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9162
9163 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
9164}
9165
9166/**
9167 * ipr_halt - Issue shutdown prepare to all adapters
9168 *
9169 * Return value:
9170 * NOTIFY_OK on success / NOTIFY_DONE on failure
9171 **/
9172static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
9173{
9174 struct ipr_cmnd *ipr_cmd;
9175 struct ipr_ioa_cfg *ioa_cfg;
9176 unsigned long flags = 0;
9177
9178 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
9179 return NOTIFY_DONE;
9180
9181 spin_lock(&ipr_driver_lock);
9182
9183 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
9184 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9185 if (!ioa_cfg->allow_cmds) {
9186 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9187 continue;
9188 }
9189
9190 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9191 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9192 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
9193 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
9194 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
9195
9196 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
9197 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9198 }
9199 spin_unlock(&ipr_driver_lock);
9200
9201 return NOTIFY_OK;
9202}
9203
9204static struct notifier_block ipr_notifier = {
9205 ipr_halt, NULL, 0
9206};
9207
1da177e4
LT		 9208/**
9209 * ipr_init - Module entry point
9210 *
9211 * Return value:
9212 * 0 on success / negative value on failure
9213 **/
9214static int __init ipr_init(void)
9215{
9216 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
9217 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
9218
f72919ec 9219 register_reboot_notifier(&ipr_notifier);
dcbccbde 9220 return pci_register_driver(&ipr_driver);
1da177e4
LT		 9221}
9222
9223/**
9224 * ipr_exit - Module unload
9225 *
9226 * Module unload entry point.
9227 *
9228 * Return value:
9229 * none
9230 **/
9231static void __exit ipr_exit(void)
9232{
f72919ec 9233 unregister_reboot_notifier(&ipr_notifier);
1da177e4
LT		 9234 pci_unregister_driver(&ipr_driver);
9235}
9236
9237module_init(ipr_init);
9238module_exit(ipr_exit);
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