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[SCSI] Merge up to linux-2.6 head
[linux-2.6/linux-loongson.git] / drivers / scsi / ipr.c
blob072f5771565823284eaa5c273203facc2d9bf027
1 /*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 /*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
57 #include <linux/fs.h>
58 #include <linux/init.h>
59 #include <linux/types.h>
60 #include <linux/errno.h>
61 #include <linux/kernel.h>
62 #include <linux/ioport.h>
63 #include <linux/delay.h>
64 #include <linux/pci.h>
65 #include <linux/wait.h>
66 #include <linux/spinlock.h>
67 #include <linux/sched.h>
68 #include <linux/interrupt.h>
69 #include <linux/blkdev.h>
70 #include <linux/firmware.h>
71 #include <linux/module.h>
72 #include <linux/moduleparam.h>
73 #include <linux/libata.h>
74 #include <asm/io.h>
75 #include <asm/irq.h>
76 #include <asm/processor.h>
77 #include <scsi/scsi.h>
78 #include <scsi/scsi_host.h>
79 #include <scsi/scsi_tcq.h>
80 #include <scsi/scsi_eh.h>
81 #include <scsi/scsi_cmnd.h>
82 #include "ipr.h"
83
84 /*
85 * Global Data
86 */
87 static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head);
88 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
89 static unsigned int ipr_max_speed = 1;
90 static int ipr_testmode = 0;
91 static unsigned int ipr_fastfail = 0;
92 static unsigned int ipr_transop_timeout = 0;
93 static unsigned int ipr_enable_cache = 1;
94 static unsigned int ipr_debug = 0;
95 static unsigned int ipr_dual_ioa_raid = 1;
96 static DEFINE_SPINLOCK(ipr_driver_lock);
97
98 /* This table describes the differences between DMA controller chips */
99 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
100 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
101 .mailbox = 0x0042C,
102 .cache_line_size = 0x20,
103 {
104 .set_interrupt_mask_reg = 0x0022C,
105 .clr_interrupt_mask_reg = 0x00230,
106 .sense_interrupt_mask_reg = 0x0022C,
107 .clr_interrupt_reg = 0x00228,
108 .sense_interrupt_reg = 0x00224,
109 .ioarrin_reg = 0x00404,
110 .sense_uproc_interrupt_reg = 0x00214,
111 .set_uproc_interrupt_reg = 0x00214,
112 .clr_uproc_interrupt_reg = 0x00218
113 }
114 },
115 { /* Snipe and Scamp */
116 .mailbox = 0x0052C,
117 .cache_line_size = 0x20,
118 {
119 .set_interrupt_mask_reg = 0x00288,
120 .clr_interrupt_mask_reg = 0x0028C,
121 .sense_interrupt_mask_reg = 0x00288,
122 .clr_interrupt_reg = 0x00284,
123 .sense_interrupt_reg = 0x00280,
124 .ioarrin_reg = 0x00504,
125 .sense_uproc_interrupt_reg = 0x00290,
126 .set_uproc_interrupt_reg = 0x00290,
127 .clr_uproc_interrupt_reg = 0x00294
128 }
129 },
130 };
131
132 static const struct ipr_chip_t ipr_chip[] = {
133 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
134 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
135 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] },
136 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] },
137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &ipr_chip_cfg[0] },
138 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] },
139 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] }
140 };
141
142 static int ipr_max_bus_speeds [] = {
143 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
144 };
145
146 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
147 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
148 module_param_named(max_speed, ipr_max_speed, uint, 0);
149 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
150 module_param_named(log_level, ipr_log_level, uint, 0);
151 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
152 module_param_named(testmode, ipr_testmode, int, 0);
153 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
154 module_param_named(fastfail, ipr_fastfail, int, 0);
155 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
156 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
157 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
158 module_param_named(enable_cache, ipr_enable_cache, int, 0);
159 MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
160 module_param_named(debug, ipr_debug, int, 0);
161 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
162 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
163 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
164 MODULE_LICENSE("GPL");
165 MODULE_VERSION(IPR_DRIVER_VERSION);
166
167 /* A constant array of IOASCs/URCs/Error Messages */
168 static const
169 struct ipr_error_table_t ipr_error_table[] = {
170 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
171 "8155: An unknown error was received"},
172 {0x00330000, 0, 0,
173 "Soft underlength error"},
174 {0x005A0000, 0, 0,
175 "Command to be cancelled not found"},
176 {0x00808000, 0, 0,
177 "Qualified success"},
178 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
179 "FFFE: Soft device bus error recovered by the IOA"},
180 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
181 "4101: Soft device bus fabric error"},
182 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
183 "FFF9: Device sector reassign successful"},
184 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
185 "FFF7: Media error recovered by device rewrite procedures"},
186 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
187 "7001: IOA sector reassignment successful"},
188 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
189 "FFF9: Soft media error. Sector reassignment recommended"},
190 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
191 "FFF7: Media error recovered by IOA rewrite procedures"},
192 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
193 "FF3D: Soft PCI bus error recovered by the IOA"},
194 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
195 "FFF6: Device hardware error recovered by the IOA"},
196 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
197 "FFF6: Device hardware error recovered by the device"},
198 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
199 "FF3D: Soft IOA error recovered by the IOA"},
200 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
201 "FFFA: Undefined device response recovered by the IOA"},
202 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
203 "FFF6: Device bus error, message or command phase"},
204 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
205 "FFFE: Task Management Function failed"},
206 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
207 "FFF6: Failure prediction threshold exceeded"},
208 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
209 "8009: Impending cache battery pack failure"},
210 {0x02040400, 0, 0,
211 "34FF: Disk device format in progress"},
212 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
213 "9070: IOA requested reset"},
214 {0x023F0000, 0, 0,
215 "Synchronization required"},
216 {0x024E0000, 0, 0,
217 "No ready, IOA shutdown"},
218 {0x025A0000, 0, 0,
219 "Not ready, IOA has been shutdown"},
220 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
221 "3020: Storage subsystem configuration error"},
222 {0x03110B00, 0, 0,
223 "FFF5: Medium error, data unreadable, recommend reassign"},
224 {0x03110C00, 0, 0,
225 "7000: Medium error, data unreadable, do not reassign"},
226 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
227 "FFF3: Disk media format bad"},
228 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
229 "3002: Addressed device failed to respond to selection"},
230 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
231 "3100: Device bus error"},
232 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
233 "3109: IOA timed out a device command"},
234 {0x04088000, 0, 0,
235 "3120: SCSI bus is not operational"},
236 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
237 "4100: Hard device bus fabric error"},
238 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
239 "9000: IOA reserved area data check"},
240 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
241 "9001: IOA reserved area invalid data pattern"},
242 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
243 "9002: IOA reserved area LRC error"},
244 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
245 "102E: Out of alternate sectors for disk storage"},
246 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
247 "FFF4: Data transfer underlength error"},
248 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
249 "FFF4: Data transfer overlength error"},
250 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
251 "3400: Logical unit failure"},
252 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
253 "FFF4: Device microcode is corrupt"},
254 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
255 "8150: PCI bus error"},
256 {0x04430000, 1, 0,
257 "Unsupported device bus message received"},
258 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
259 "FFF4: Disk device problem"},
260 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
261 "8150: Permanent IOA failure"},
262 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
263 "3010: Disk device returned wrong response to IOA"},
264 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
265 "8151: IOA microcode error"},
266 {0x04448500, 0, 0,
267 "Device bus status error"},
268 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
269 "8157: IOA error requiring IOA reset to recover"},
270 {0x04448700, 0, 0,
271 "ATA device status error"},
272 {0x04490000, 0, 0,
273 "Message reject received from the device"},
274 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
275 "8008: A permanent cache battery pack failure occurred"},
276 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
277 "9090: Disk unit has been modified after the last known status"},
278 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
279 "9081: IOA detected device error"},
280 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
281 "9082: IOA detected device error"},
282 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
283 "3110: Device bus error, message or command phase"},
284 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
285 "3110: SAS Command / Task Management Function failed"},
286 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
287 "9091: Incorrect hardware configuration change has been detected"},
288 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
289 "9073: Invalid multi-adapter configuration"},
290 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
291 "4010: Incorrect connection between cascaded expanders"},
292 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
293 "4020: Connections exceed IOA design limits"},
294 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
295 "4030: Incorrect multipath connection"},
296 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
297 "4110: Unsupported enclosure function"},
298 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
299 "FFF4: Command to logical unit failed"},
300 {0x05240000, 1, 0,
301 "Illegal request, invalid request type or request packet"},
302 {0x05250000, 0, 0,
303 "Illegal request, invalid resource handle"},
304 {0x05258000, 0, 0,
305 "Illegal request, commands not allowed to this device"},
306 {0x05258100, 0, 0,
307 "Illegal request, command not allowed to a secondary adapter"},
308 {0x05260000, 0, 0,
309 "Illegal request, invalid field in parameter list"},
310 {0x05260100, 0, 0,
311 "Illegal request, parameter not supported"},
312 {0x05260200, 0, 0,
313 "Illegal request, parameter value invalid"},
314 {0x052C0000, 0, 0,
315 "Illegal request, command sequence error"},
316 {0x052C8000, 1, 0,
317 "Illegal request, dual adapter support not enabled"},
318 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
319 "9031: Array protection temporarily suspended, protection resuming"},
320 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
321 "9040: Array protection temporarily suspended, protection resuming"},
322 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
323 "3140: Device bus not ready to ready transition"},
324 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
325 "FFFB: SCSI bus was reset"},
326 {0x06290500, 0, 0,
327 "FFFE: SCSI bus transition to single ended"},
328 {0x06290600, 0, 0,
329 "FFFE: SCSI bus transition to LVD"},
330 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
331 "FFFB: SCSI bus was reset by another initiator"},
332 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
333 "3029: A device replacement has occurred"},
334 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
335 "9051: IOA cache data exists for a missing or failed device"},
336 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
337 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
338 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
339 "9025: Disk unit is not supported at its physical location"},
340 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
341 "3020: IOA detected a SCSI bus configuration error"},
342 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
343 "3150: SCSI bus configuration error"},
344 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
345 "9074: Asymmetric advanced function disk configuration"},
346 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
347 "4040: Incomplete multipath connection between IOA and enclosure"},
348 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
349 "4041: Incomplete multipath connection between enclosure and device"},
350 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
351 "9075: Incomplete multipath connection between IOA and remote IOA"},
352 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
353 "9076: Configuration error, missing remote IOA"},
354 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
355 "4050: Enclosure does not support a required multipath function"},
356 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
357 "9041: Array protection temporarily suspended"},
358 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
359 "9042: Corrupt array parity detected on specified device"},
360 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
361 "9030: Array no longer protected due to missing or failed disk unit"},
362 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
363 "9071: Link operational transition"},
364 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
365 "9072: Link not operational transition"},
366 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
367 "9032: Array exposed but still protected"},
368 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
369 "70DD: Device forced failed by disrupt device command"},
370 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
371 "4061: Multipath redundancy level got better"},
372 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
373 "4060: Multipath redundancy level got worse"},
374 {0x07270000, 0, 0,
375 "Failure due to other device"},
376 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
377 "9008: IOA does not support functions expected by devices"},
378 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
379 "9010: Cache data associated with attached devices cannot be found"},
380 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
381 "9011: Cache data belongs to devices other than those attached"},
382 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
383 "9020: Array missing 2 or more devices with only 1 device present"},
384 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
385 "9021: Array missing 2 or more devices with 2 or more devices present"},
386 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
387 "9022: Exposed array is missing a required device"},
388 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
389 "9023: Array member(s) not at required physical locations"},
390 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
391 "9024: Array not functional due to present hardware configuration"},
392 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
393 "9026: Array not functional due to present hardware configuration"},
394 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
395 "9027: Array is missing a device and parity is out of sync"},
396 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
397 "9028: Maximum number of arrays already exist"},
398 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
399 "9050: Required cache data cannot be located for a disk unit"},
400 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
401 "9052: Cache data exists for a device that has been modified"},
402 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
403 "9054: IOA resources not available due to previous problems"},
404 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
405 "9092: Disk unit requires initialization before use"},
406 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
407 "9029: Incorrect hardware configuration change has been detected"},
408 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
409 "9060: One or more disk pairs are missing from an array"},
410 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
411 "9061: One or more disks are missing from an array"},
412 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
413 "9062: One or more disks are missing from an array"},
414 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
415 "9063: Maximum number of functional arrays has been exceeded"},
416 {0x0B260000, 0, 0,
417 "Aborted command, invalid descriptor"},
418 {0x0B5A0000, 0, 0,
419 "Command terminated by host"}
420 };
421
422 static const struct ipr_ses_table_entry ipr_ses_table[] = {
423 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
424 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
425 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
426 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
427 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
428 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
429 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
430 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
431 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
432 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
433 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
434 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
435 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
436 };
437
438 /*
439 * Function Prototypes
440 */
441 static int ipr_reset_alert(struct ipr_cmnd *);
442 static void ipr_process_ccn(struct ipr_cmnd *);
443 static void ipr_process_error(struct ipr_cmnd *);
444 static void ipr_reset_ioa_job(struct ipr_cmnd *);
445 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
446 enum ipr_shutdown_type);
447
448 #ifdef CONFIG_SCSI_IPR_TRACE
449 /**
450 * ipr_trc_hook - Add a trace entry to the driver trace
451 * @ipr_cmd: ipr command struct
452 * @type: trace type
453 * @add_data: additional data
454 *
455 * Return value:
456 * none
457 **/
458 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
459 u8 type, u32 add_data)
460 {
461 struct ipr_trace_entry *trace_entry;
462 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
463
464 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
465 trace_entry->time = jiffies;
466 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
467 trace_entry->type = type;
468 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
469 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
470 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
471 trace_entry->u.add_data = add_data;
472 }
473 #else
474 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
475 #endif
476
477 /**
478 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
479 * @ipr_cmd: ipr command struct
480 *
481 * Return value:
482 * none
483 **/
484 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
485 {
486 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
487 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
488 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
489
490 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
491 ioarcb->write_data_transfer_length = 0;
492 ioarcb->read_data_transfer_length = 0;
493 ioarcb->write_ioadl_len = 0;
494 ioarcb->read_ioadl_len = 0;
495 ioarcb->write_ioadl_addr =
496 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
497 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
498 ioasa->ioasc = 0;
499 ioasa->residual_data_len = 0;
500 ioasa->u.gata.status = 0;
501
502 ipr_cmd->scsi_cmd = NULL;
503 ipr_cmd->qc = NULL;
504 ipr_cmd->sense_buffer[0] = 0;
505 ipr_cmd->dma_use_sg = 0;
506 }
507
508 /**
509 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
510 * @ipr_cmd: ipr command struct
511 *
512 * Return value:
513 * none
514 **/
515 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
516 {
517 ipr_reinit_ipr_cmnd(ipr_cmd);
518 ipr_cmd->u.scratch = 0;
519 ipr_cmd->sibling = NULL;
520 init_timer(&ipr_cmd->timer);
521 }
522
523 /**
524 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
525 * @ioa_cfg: ioa config struct
526 *
527 * Return value:
528 * pointer to ipr command struct
529 **/
530 static
531 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
532 {
533 struct ipr_cmnd *ipr_cmd;
534
535 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
536 list_del(&ipr_cmd->queue);
537 ipr_init_ipr_cmnd(ipr_cmd);
538
539 return ipr_cmd;
540 }
541
542 /**
543 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
544 * @ioa_cfg: ioa config struct
545 * @clr_ints: interrupts to clear
546 *
547 * This function masks all interrupts on the adapter, then clears the
548 * interrupts specified in the mask
549 *
550 * Return value:
551 * none
552 **/
553 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
554 u32 clr_ints)
555 {
556 volatile u32 int_reg;
557
558 /* Stop new interrupts */
559 ioa_cfg->allow_interrupts = 0;
560
561 /* Set interrupt mask to stop all new interrupts */
562 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
563
564 /* Clear any pending interrupts */
565 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
566 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
567 }
568
569 /**
570 * ipr_save_pcix_cmd_reg - Save PCI-X command register
571 * @ioa_cfg: ioa config struct
572 *
573 * Return value:
574 * 0 on success / -EIO on failure
575 **/
576 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
577 {
578 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
579
580 if (pcix_cmd_reg == 0)
581 return 0;
582
583 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
584 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
585 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
586 return -EIO;
587 }
588
589 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
590 return 0;
591 }
592
593 /**
594 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
595 * @ioa_cfg: ioa config struct
596 *
597 * Return value:
598 * 0 on success / -EIO on failure
599 **/
600 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
601 {
602 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
603
604 if (pcix_cmd_reg) {
605 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
606 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
607 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
608 return -EIO;
609 }
610 }
611
612 return 0;
613 }
614
615 /**
616 * ipr_sata_eh_done - done function for aborted SATA commands
617 * @ipr_cmd: ipr command struct
618 *
619 * This function is invoked for ops generated to SATA
620 * devices which are being aborted.
621 *
622 * Return value:
623 * none
624 **/
625 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
626 {
627 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
628 struct ata_queued_cmd *qc = ipr_cmd->qc;
629 struct ipr_sata_port *sata_port = qc->ap->private_data;
630
631 qc->err_mask |= AC_ERR_OTHER;
632 sata_port->ioasa.status |= ATA_BUSY;
633 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
634 ata_qc_complete(qc);
635 }
636
637 /**
638 * ipr_scsi_eh_done - mid-layer done function for aborted ops
639 * @ipr_cmd: ipr command struct
640 *
641 * This function is invoked by the interrupt handler for
642 * ops generated by the SCSI mid-layer which are being aborted.
643 *
644 * Return value:
645 * none
646 **/
647 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
648 {
649 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
650 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
651
652 scsi_cmd->result |= (DID_ERROR << 16);
653
654 scsi_dma_unmap(ipr_cmd->scsi_cmd);
655 scsi_cmd->scsi_done(scsi_cmd);
656 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
657 }
658
659 /**
660 * ipr_fail_all_ops - Fails all outstanding ops.
661 * @ioa_cfg: ioa config struct
662 *
663 * This function fails all outstanding ops.
664 *
665 * Return value:
666 * none
667 **/
668 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
669 {
670 struct ipr_cmnd *ipr_cmd, *temp;
671
672 ENTER;
673 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
674 list_del(&ipr_cmd->queue);
675
676 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
677 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
678
679 if (ipr_cmd->scsi_cmd)
680 ipr_cmd->done = ipr_scsi_eh_done;
681 else if (ipr_cmd->qc)
682 ipr_cmd->done = ipr_sata_eh_done;
683
684 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
685 del_timer(&ipr_cmd->timer);
686 ipr_cmd->done(ipr_cmd);
687 }
688
689 LEAVE;
690 }
691
692 /**
693 * ipr_do_req - Send driver initiated requests.
694 * @ipr_cmd: ipr command struct
695 * @done: done function
696 * @timeout_func: timeout function
697 * @timeout: timeout value
698 *
699 * This function sends the specified command to the adapter with the
700 * timeout given. The done function is invoked on command completion.
701 *
702 * Return value:
703 * none
704 **/
705 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
706 void (*done) (struct ipr_cmnd *),
707 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
708 {
709 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
710
711 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
712
713 ipr_cmd->done = done;
714
715 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
716 ipr_cmd->timer.expires = jiffies + timeout;
717 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
718
719 add_timer(&ipr_cmd->timer);
720
721 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
722
723 mb();
724 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
725 ioa_cfg->regs.ioarrin_reg);
726 }
727
728 /**
729 * ipr_internal_cmd_done - Op done function for an internally generated op.
730 * @ipr_cmd: ipr command struct
731 *
732 * This function is the op done function for an internally generated,
733 * blocking op. It simply wakes the sleeping thread.
734 *
735 * Return value:
736 * none
737 **/
738 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
739 {
740 if (ipr_cmd->sibling)
741 ipr_cmd->sibling = NULL;
742 else
743 complete(&ipr_cmd->completion);
744 }
745
746 /**
747 * ipr_send_blocking_cmd - Send command and sleep on its completion.
748 * @ipr_cmd: ipr command struct
749 * @timeout_func: function to invoke if command times out
750 * @timeout: timeout
751 *
752 * Return value:
753 * none
754 **/
755 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
756 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
757 u32 timeout)
758 {
759 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
760
761 init_completion(&ipr_cmd->completion);
762 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
763
764 spin_unlock_irq(ioa_cfg->host->host_lock);
765 wait_for_completion(&ipr_cmd->completion);
766 spin_lock_irq(ioa_cfg->host->host_lock);
767 }
768
769 /**
770 * ipr_send_hcam - Send an HCAM to the adapter.
771 * @ioa_cfg: ioa config struct
772 * @type: HCAM type
773 * @hostrcb: hostrcb struct
774 *
775 * This function will send a Host Controlled Async command to the adapter.
776 * If HCAMs are currently not allowed to be issued to the adapter, it will
777 * place the hostrcb on the free queue.
778 *
779 * Return value:
780 * none
781 **/
782 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
783 struct ipr_hostrcb *hostrcb)
784 {
785 struct ipr_cmnd *ipr_cmd;
786 struct ipr_ioarcb *ioarcb;
787
788 if (ioa_cfg->allow_cmds) {
789 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
790 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
791 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
792
793 ipr_cmd->u.hostrcb = hostrcb;
794 ioarcb = &ipr_cmd->ioarcb;
795
796 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
797 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
798 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
799 ioarcb->cmd_pkt.cdb[1] = type;
800 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
801 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
802
803 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
804 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
805 ipr_cmd->ioadl[0].flags_and_data_len =
806 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
807 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
808
809 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
810 ipr_cmd->done = ipr_process_ccn;
811 else
812 ipr_cmd->done = ipr_process_error;
813
814 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
815
816 mb();
817 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
818 ioa_cfg->regs.ioarrin_reg);
819 } else {
820 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
821 }
822 }
823
824 /**
825 * ipr_init_res_entry - Initialize a resource entry struct.
826 * @res: resource entry struct
827 *
828 * Return value:
829 * none
830 **/
831 static void ipr_init_res_entry(struct ipr_resource_entry *res)
832 {
833 res->needs_sync_complete = 0;
834 res->in_erp = 0;
835 res->add_to_ml = 0;
836 res->del_from_ml = 0;
837 res->resetting_device = 0;
838 res->sdev = NULL;
839 res->sata_port = NULL;
840 }
841
842 /**
843 * ipr_handle_config_change - Handle a config change from the adapter
844 * @ioa_cfg: ioa config struct
845 * @hostrcb: hostrcb
846 *
847 * Return value:
848 * none
849 **/
850 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
851 struct ipr_hostrcb *hostrcb)
852 {
853 struct ipr_resource_entry *res = NULL;
854 struct ipr_config_table_entry *cfgte;
855 u32 is_ndn = 1;
856
857 cfgte = &hostrcb->hcam.u.ccn.cfgte;
858
859 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
860 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
861 sizeof(cfgte->res_addr))) {
862 is_ndn = 0;
863 break;
864 }
865 }
866
867 if (is_ndn) {
868 if (list_empty(&ioa_cfg->free_res_q)) {
869 ipr_send_hcam(ioa_cfg,
870 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
871 hostrcb);
872 return;
873 }
874
875 res = list_entry(ioa_cfg->free_res_q.next,
876 struct ipr_resource_entry, queue);
877
878 list_del(&res->queue);
879 ipr_init_res_entry(res);
880 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
881 }
882
883 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
884
885 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
886 if (res->sdev) {
887 res->del_from_ml = 1;
888 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
889 if (ioa_cfg->allow_ml_add_del)
890 schedule_work(&ioa_cfg->work_q);
891 } else
892 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
893 } else if (!res->sdev) {
894 res->add_to_ml = 1;
895 if (ioa_cfg->allow_ml_add_del)
896 schedule_work(&ioa_cfg->work_q);
897 }
898
899 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
900 }
901
902 /**
903 * ipr_process_ccn - Op done function for a CCN.
904 * @ipr_cmd: ipr command struct
905 *
906 * This function is the op done function for a configuration
907 * change notification host controlled async from the adapter.
908 *
909 * Return value:
910 * none
911 **/
912 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
913 {
914 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
915 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
916 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
917
918 list_del(&hostrcb->queue);
919 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
920
921 if (ioasc) {
922 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
923 dev_err(&ioa_cfg->pdev->dev,
924 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
925
926 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
927 } else {
928 ipr_handle_config_change(ioa_cfg, hostrcb);
929 }
930 }
931
932 /**
933 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
934 * @i: index into buffer
935 * @buf: string to modify
936 *
937 * This function will strip all trailing whitespace, pad the end
938 * of the string with a single space, and NULL terminate the string.
939 *
940 * Return value:
941 * new length of string
942 **/
943 static int strip_and_pad_whitespace(int i, char *buf)
944 {
945 while (i && buf[i] == ' ')
946 i--;
947 buf[i+1] = ' ';
948 buf[i+2] = '\0';
949 return i + 2;
950 }
951
952 /**
953 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
954 * @prefix: string to print at start of printk
955 * @hostrcb: hostrcb pointer
956 * @vpd: vendor/product id/sn struct
957 *
958 * Return value:
959 * none
960 **/
961 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
962 struct ipr_vpd *vpd)
963 {
964 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
965 int i = 0;
966
967 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
968 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
969
970 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
971 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
972
973 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
974 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
975
976 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
977 }
978
979 /**
980 * ipr_log_vpd - Log the passed VPD to the error log.
981 * @vpd: vendor/product id/sn struct
982 *
983 * Return value:
984 * none
985 **/
986 static void ipr_log_vpd(struct ipr_vpd *vpd)
987 {
988 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
989 + IPR_SERIAL_NUM_LEN];
990
991 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
992 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
993 IPR_PROD_ID_LEN);
994 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
995 ipr_err("Vendor/Product ID: %s\n", buffer);
996
997 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
998 buffer[IPR_SERIAL_NUM_LEN] = '\0';
999 ipr_err(" Serial Number: %s\n", buffer);
1000 }
1001
1002 /**
1003 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1004 * @prefix: string to print at start of printk
1005 * @hostrcb: hostrcb pointer
1006 * @vpd: vendor/product id/sn/wwn struct
1007 *
1008 * Return value:
1009 * none
1010 **/
1011 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1012 struct ipr_ext_vpd *vpd)
1013 {
1014 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1015 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1016 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1017 }
1018
1019 /**
1020 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1021 * @vpd: vendor/product id/sn/wwn struct
1022 *
1023 * Return value:
1024 * none
1025 **/
1026 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1027 {
1028 ipr_log_vpd(&vpd->vpd);
1029 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1030 be32_to_cpu(vpd->wwid[1]));
1031 }
1032
1033 /**
1034 * ipr_log_enhanced_cache_error - Log a cache error.
1035 * @ioa_cfg: ioa config struct
1036 * @hostrcb: hostrcb struct
1037 *
1038 * Return value:
1039 * none
1040 **/
1041 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1042 struct ipr_hostrcb *hostrcb)
1043 {
1044 struct ipr_hostrcb_type_12_error *error =
1045 &hostrcb->hcam.u.error.u.type_12_error;
1046
1047 ipr_err("-----Current Configuration-----\n");
1048 ipr_err("Cache Directory Card Information:\n");
1049 ipr_log_ext_vpd(&error->ioa_vpd);
1050 ipr_err("Adapter Card Information:\n");
1051 ipr_log_ext_vpd(&error->cfc_vpd);
1052
1053 ipr_err("-----Expected Configuration-----\n");
1054 ipr_err("Cache Directory Card Information:\n");
1055 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1056 ipr_err("Adapter Card Information:\n");
1057 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1058
1059 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1060 be32_to_cpu(error->ioa_data[0]),
1061 be32_to_cpu(error->ioa_data[1]),
1062 be32_to_cpu(error->ioa_data[2]));
1063 }
1064
1065 /**
1066 * ipr_log_cache_error - Log a cache error.
1067 * @ioa_cfg: ioa config struct
1068 * @hostrcb: hostrcb struct
1069 *
1070 * Return value:
1071 * none
1072 **/
1073 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1074 struct ipr_hostrcb *hostrcb)
1075 {
1076 struct ipr_hostrcb_type_02_error *error =
1077 &hostrcb->hcam.u.error.u.type_02_error;
1078
1079 ipr_err("-----Current Configuration-----\n");
1080 ipr_err("Cache Directory Card Information:\n");
1081 ipr_log_vpd(&error->ioa_vpd);
1082 ipr_err("Adapter Card Information:\n");
1083 ipr_log_vpd(&error->cfc_vpd);
1084
1085 ipr_err("-----Expected Configuration-----\n");
1086 ipr_err("Cache Directory Card Information:\n");
1087 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1088 ipr_err("Adapter Card Information:\n");
1089 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1090
1091 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1092 be32_to_cpu(error->ioa_data[0]),
1093 be32_to_cpu(error->ioa_data[1]),
1094 be32_to_cpu(error->ioa_data[2]));
1095 }
1096
1097 /**
1098 * ipr_log_enhanced_config_error - Log a configuration error.
1099 * @ioa_cfg: ioa config struct
1100 * @hostrcb: hostrcb struct
1101 *
1102 * Return value:
1103 * none
1104 **/
1105 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1106 struct ipr_hostrcb *hostrcb)
1107 {
1108 int errors_logged, i;
1109 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1110 struct ipr_hostrcb_type_13_error *error;
1111
1112 error = &hostrcb->hcam.u.error.u.type_13_error;
1113 errors_logged = be32_to_cpu(error->errors_logged);
1114
1115 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1116 be32_to_cpu(error->errors_detected), errors_logged);
1117
1118 dev_entry = error->dev;
1119
1120 for (i = 0; i < errors_logged; i++, dev_entry++) {
1121 ipr_err_separator;
1122
1123 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1124 ipr_log_ext_vpd(&dev_entry->vpd);
1125
1126 ipr_err("-----New Device Information-----\n");
1127 ipr_log_ext_vpd(&dev_entry->new_vpd);
1128
1129 ipr_err("Cache Directory Card Information:\n");
1130 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1131
1132 ipr_err("Adapter Card Information:\n");
1133 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1134 }
1135 }
1136
1137 /**
1138 * ipr_log_config_error - Log a configuration error.
1139 * @ioa_cfg: ioa config struct
1140 * @hostrcb: hostrcb struct
1141 *
1142 * Return value:
1143 * none
1144 **/
1145 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1146 struct ipr_hostrcb *hostrcb)
1147 {
1148 int errors_logged, i;
1149 struct ipr_hostrcb_device_data_entry *dev_entry;
1150 struct ipr_hostrcb_type_03_error *error;
1151
1152 error = &hostrcb->hcam.u.error.u.type_03_error;
1153 errors_logged = be32_to_cpu(error->errors_logged);
1154
1155 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1156 be32_to_cpu(error->errors_detected), errors_logged);
1157
1158 dev_entry = error->dev;
1159
1160 for (i = 0; i < errors_logged; i++, dev_entry++) {
1161 ipr_err_separator;
1162
1163 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1164 ipr_log_vpd(&dev_entry->vpd);
1165
1166 ipr_err("-----New Device Information-----\n");
1167 ipr_log_vpd(&dev_entry->new_vpd);
1168
1169 ipr_err("Cache Directory Card Information:\n");
1170 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1171
1172 ipr_err("Adapter Card Information:\n");
1173 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1174
1175 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1176 be32_to_cpu(dev_entry->ioa_data[0]),
1177 be32_to_cpu(dev_entry->ioa_data[1]),
1178 be32_to_cpu(dev_entry->ioa_data[2]),
1179 be32_to_cpu(dev_entry->ioa_data[3]),
1180 be32_to_cpu(dev_entry->ioa_data[4]));
1181 }
1182 }
1183
1184 /**
1185 * ipr_log_enhanced_array_error - Log an array configuration error.
1186 * @ioa_cfg: ioa config struct
1187 * @hostrcb: hostrcb struct
1188 *
1189 * Return value:
1190 * none
1191 **/
1192 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1193 struct ipr_hostrcb *hostrcb)
1194 {
1195 int i, num_entries;
1196 struct ipr_hostrcb_type_14_error *error;
1197 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1198 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1199
1200 error = &hostrcb->hcam.u.error.u.type_14_error;
1201
1202 ipr_err_separator;
1203
1204 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1205 error->protection_level,
1206 ioa_cfg->host->host_no,
1207 error->last_func_vset_res_addr.bus,
1208 error->last_func_vset_res_addr.target,
1209 error->last_func_vset_res_addr.lun);
1210
1211 ipr_err_separator;
1212
1213 array_entry = error->array_member;
1214 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1215 sizeof(error->array_member));
1216
1217 for (i = 0; i < num_entries; i++, array_entry++) {
1218 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1219 continue;
1220
1221 if (be32_to_cpu(error->exposed_mode_adn) == i)
1222 ipr_err("Exposed Array Member %d:\n", i);
1223 else
1224 ipr_err("Array Member %d:\n", i);
1225
1226 ipr_log_ext_vpd(&array_entry->vpd);
1227 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1228 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1229 "Expected Location");
1230
1231 ipr_err_separator;
1232 }
1233 }
1234
1235 /**
1236 * ipr_log_array_error - Log an array configuration error.
1237 * @ioa_cfg: ioa config struct
1238 * @hostrcb: hostrcb struct
1239 *
1240 * Return value:
1241 * none
1242 **/
1243 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1244 struct ipr_hostrcb *hostrcb)
1245 {
1246 int i;
1247 struct ipr_hostrcb_type_04_error *error;
1248 struct ipr_hostrcb_array_data_entry *array_entry;
1249 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1250
1251 error = &hostrcb->hcam.u.error.u.type_04_error;
1252
1253 ipr_err_separator;
1254
1255 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1256 error->protection_level,
1257 ioa_cfg->host->host_no,
1258 error->last_func_vset_res_addr.bus,
1259 error->last_func_vset_res_addr.target,
1260 error->last_func_vset_res_addr.lun);
1261
1262 ipr_err_separator;
1263
1264 array_entry = error->array_member;
1265
1266 for (i = 0; i < 18; i++) {
1267 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1268 continue;
1269
1270 if (be32_to_cpu(error->exposed_mode_adn) == i)
1271 ipr_err("Exposed Array Member %d:\n", i);
1272 else
1273 ipr_err("Array Member %d:\n", i);
1274
1275 ipr_log_vpd(&array_entry->vpd);
1276
1277 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1278 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1279 "Expected Location");
1280
1281 ipr_err_separator;
1282
1283 if (i == 9)
1284 array_entry = error->array_member2;
1285 else
1286 array_entry++;
1287 }
1288 }
1289
1290 /**
1291 * ipr_log_hex_data - Log additional hex IOA error data.
1292 * @ioa_cfg: ioa config struct
1293 * @data: IOA error data
1294 * @len: data length
1295 *
1296 * Return value:
1297 * none
1298 **/
1299 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1300 {
1301 int i;
1302
1303 if (len == 0)
1304 return;
1305
1306 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1307 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1308
1309 for (i = 0; i < len / 4; i += 4) {
1310 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1311 be32_to_cpu(data[i]),
1312 be32_to_cpu(data[i+1]),
1313 be32_to_cpu(data[i+2]),
1314 be32_to_cpu(data[i+3]));
1315 }
1316 }
1317
1318 /**
1319 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1320 * @ioa_cfg: ioa config struct
1321 * @hostrcb: hostrcb struct
1322 *
1323 * Return value:
1324 * none
1325 **/
1326 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1327 struct ipr_hostrcb *hostrcb)
1328 {
1329 struct ipr_hostrcb_type_17_error *error;
1330
1331 error = &hostrcb->hcam.u.error.u.type_17_error;
1332 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1333 strstrip(error->failure_reason);
1334
1335 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1336 be32_to_cpu(hostrcb->hcam.u.error.prc));
1337 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1338 ipr_log_hex_data(ioa_cfg, error->data,
1339 be32_to_cpu(hostrcb->hcam.length) -
1340 (offsetof(struct ipr_hostrcb_error, u) +
1341 offsetof(struct ipr_hostrcb_type_17_error, data)));
1342 }
1343
1344 /**
1345 * ipr_log_dual_ioa_error - Log a dual adapter error.
1346 * @ioa_cfg: ioa config struct
1347 * @hostrcb: hostrcb struct
1348 *
1349 * Return value:
1350 * none
1351 **/
1352 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1353 struct ipr_hostrcb *hostrcb)
1354 {
1355 struct ipr_hostrcb_type_07_error *error;
1356
1357 error = &hostrcb->hcam.u.error.u.type_07_error;
1358 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1359 strstrip(error->failure_reason);
1360
1361 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1362 be32_to_cpu(hostrcb->hcam.u.error.prc));
1363 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1364 ipr_log_hex_data(ioa_cfg, error->data,
1365 be32_to_cpu(hostrcb->hcam.length) -
1366 (offsetof(struct ipr_hostrcb_error, u) +
1367 offsetof(struct ipr_hostrcb_type_07_error, data)));
1368 }
1369
1370 static const struct {
1371 u8 active;
1372 char *desc;
1373 } path_active_desc[] = {
1374 { IPR_PATH_NO_INFO, "Path" },
1375 { IPR_PATH_ACTIVE, "Active path" },
1376 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1377 };
1378
1379 static const struct {
1380 u8 state;
1381 char *desc;
1382 } path_state_desc[] = {
1383 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1384 { IPR_PATH_HEALTHY, "is healthy" },
1385 { IPR_PATH_DEGRADED, "is degraded" },
1386 { IPR_PATH_FAILED, "is failed" }
1387 };
1388
1389 /**
1390 * ipr_log_fabric_path - Log a fabric path error
1391 * @hostrcb: hostrcb struct
1392 * @fabric: fabric descriptor
1393 *
1394 * Return value:
1395 * none
1396 **/
1397 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1398 struct ipr_hostrcb_fabric_desc *fabric)
1399 {
1400 int i, j;
1401 u8 path_state = fabric->path_state;
1402 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1403 u8 state = path_state & IPR_PATH_STATE_MASK;
1404
1405 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1406 if (path_active_desc[i].active != active)
1407 continue;
1408
1409 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1410 if (path_state_desc[j].state != state)
1411 continue;
1412
1413 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1414 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1415 path_active_desc[i].desc, path_state_desc[j].desc,
1416 fabric->ioa_port);
1417 } else if (fabric->cascaded_expander == 0xff) {
1418 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1419 path_active_desc[i].desc, path_state_desc[j].desc,
1420 fabric->ioa_port, fabric->phy);
1421 } else if (fabric->phy == 0xff) {
1422 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1423 path_active_desc[i].desc, path_state_desc[j].desc,
1424 fabric->ioa_port, fabric->cascaded_expander);
1425 } else {
1426 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1427 path_active_desc[i].desc, path_state_desc[j].desc,
1428 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1429 }
1430 return;
1431 }
1432 }
1433
1434 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1435 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1436 }
1437
1438 static const struct {
1439 u8 type;
1440 char *desc;
1441 } path_type_desc[] = {
1442 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1443 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1444 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1445 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1446 };
1447
1448 static const struct {
1449 u8 status;
1450 char *desc;
1451 } path_status_desc[] = {
1452 { IPR_PATH_CFG_NO_PROB, "Functional" },
1453 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1454 { IPR_PATH_CFG_FAILED, "Failed" },
1455 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1456 { IPR_PATH_NOT_DETECTED, "Missing" },
1457 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1458 };
1459
1460 static const char *link_rate[] = {
1461 "unknown",
1462 "disabled",
1463 "phy reset problem",
1464 "spinup hold",
1465 "port selector",
1466 "unknown",
1467 "unknown",
1468 "unknown",
1469 "1.5Gbps",
1470 "3.0Gbps",
1471 "unknown",
1472 "unknown",
1473 "unknown",
1474 "unknown",
1475 "unknown",
1476 "unknown"
1477 };
1478
1479 /**
1480 * ipr_log_path_elem - Log a fabric path element.
1481 * @hostrcb: hostrcb struct
1482 * @cfg: fabric path element struct
1483 *
1484 * Return value:
1485 * none
1486 **/
1487 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1488 struct ipr_hostrcb_config_element *cfg)
1489 {
1490 int i, j;
1491 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1492 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1493
1494 if (type == IPR_PATH_CFG_NOT_EXIST)
1495 return;
1496
1497 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1498 if (path_type_desc[i].type != type)
1499 continue;
1500
1501 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
1502 if (path_status_desc[j].status != status)
1503 continue;
1504
1505 if (type == IPR_PATH_CFG_IOA_PORT) {
1506 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
1507 path_status_desc[j].desc, path_type_desc[i].desc,
1508 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1509 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1510 } else {
1511 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
1512 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
1513 path_status_desc[j].desc, path_type_desc[i].desc,
1514 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1515 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1516 } else if (cfg->cascaded_expander == 0xff) {
1517 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
1518 "WWN=%08X%08X\n", path_status_desc[j].desc,
1519 path_type_desc[i].desc, cfg->phy,
1520 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1521 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1522 } else if (cfg->phy == 0xff) {
1523 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
1524 "WWN=%08X%08X\n", path_status_desc[j].desc,
1525 path_type_desc[i].desc, cfg->cascaded_expander,
1526 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1527 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1528 } else {
1529 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
1530 "WWN=%08X%08X\n", path_status_desc[j].desc,
1531 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
1532 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1533 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1534 }
1535 }
1536 return;
1537 }
1538 }
1539
1540 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
1541 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
1542 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1543 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1544 }
1545
1546 /**
1547 * ipr_log_fabric_error - Log a fabric error.
1548 * @ioa_cfg: ioa config struct
1549 * @hostrcb: hostrcb struct
1550 *
1551 * Return value:
1552 * none
1553 **/
1554 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
1555 struct ipr_hostrcb *hostrcb)
1556 {
1557 struct ipr_hostrcb_type_20_error *error;
1558 struct ipr_hostrcb_fabric_desc *fabric;
1559 struct ipr_hostrcb_config_element *cfg;
1560 int i, add_len;
1561
1562 error = &hostrcb->hcam.u.error.u.type_20_error;
1563 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1564 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
1565
1566 add_len = be32_to_cpu(hostrcb->hcam.length) -
1567 (offsetof(struct ipr_hostrcb_error, u) +
1568 offsetof(struct ipr_hostrcb_type_20_error, desc));
1569
1570 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
1571 ipr_log_fabric_path(hostrcb, fabric);
1572 for_each_fabric_cfg(fabric, cfg)
1573 ipr_log_path_elem(hostrcb, cfg);
1574
1575 add_len -= be16_to_cpu(fabric->length);
1576 fabric = (struct ipr_hostrcb_fabric_desc *)
1577 ((unsigned long)fabric + be16_to_cpu(fabric->length));
1578 }
1579
1580 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
1581 }
1582
1583 /**
1584 * ipr_log_generic_error - Log an adapter error.
1585 * @ioa_cfg: ioa config struct
1586 * @hostrcb: hostrcb struct
1587 *
1588 * Return value:
1589 * none
1590 **/
1591 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1592 struct ipr_hostrcb *hostrcb)
1593 {
1594 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
1595 be32_to_cpu(hostrcb->hcam.length));
1596 }
1597
1598 /**
1599 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1600 * @ioasc: IOASC
1601 *
1602 * This function will return the index of into the ipr_error_table
1603 * for the specified IOASC. If the IOASC is not in the table,
1604 * 0 will be returned, which points to the entry used for unknown errors.
1605 *
1606 * Return value:
1607 * index into the ipr_error_table
1608 **/
1609 static u32 ipr_get_error(u32 ioasc)
1610 {
1611 int i;
1612
1613 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1614 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
1615 return i;
1616
1617 return 0;
1618 }
1619
1620 /**
1621 * ipr_handle_log_data - Log an adapter error.
1622 * @ioa_cfg: ioa config struct
1623 * @hostrcb: hostrcb struct
1624 *
1625 * This function logs an adapter error to the system.
1626 *
1627 * Return value:
1628 * none
1629 **/
1630 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1631 struct ipr_hostrcb *hostrcb)
1632 {
1633 u32 ioasc;
1634 int error_index;
1635
1636 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1637 return;
1638
1639 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1640 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1641
1642 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1643
1644 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1645 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1646 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1647 scsi_report_bus_reset(ioa_cfg->host,
1648 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1649 }
1650
1651 error_index = ipr_get_error(ioasc);
1652
1653 if (!ipr_error_table[error_index].log_hcam)
1654 return;
1655
1656 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
1657
1658 /* Set indication we have logged an error */
1659 ioa_cfg->errors_logged++;
1660
1661 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
1662 return;
1663 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1664 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1665
1666 switch (hostrcb->hcam.overlay_id) {
1667 case IPR_HOST_RCB_OVERLAY_ID_2:
1668 ipr_log_cache_error(ioa_cfg, hostrcb);
1669 break;
1670 case IPR_HOST_RCB_OVERLAY_ID_3:
1671 ipr_log_config_error(ioa_cfg, hostrcb);
1672 break;
1673 case IPR_HOST_RCB_OVERLAY_ID_4:
1674 case IPR_HOST_RCB_OVERLAY_ID_6:
1675 ipr_log_array_error(ioa_cfg, hostrcb);
1676 break;
1677 case IPR_HOST_RCB_OVERLAY_ID_7:
1678 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1679 break;
1680 case IPR_HOST_RCB_OVERLAY_ID_12:
1681 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1682 break;
1683 case IPR_HOST_RCB_OVERLAY_ID_13:
1684 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1685 break;
1686 case IPR_HOST_RCB_OVERLAY_ID_14:
1687 case IPR_HOST_RCB_OVERLAY_ID_16:
1688 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1689 break;
1690 case IPR_HOST_RCB_OVERLAY_ID_17:
1691 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1692 break;
1693 case IPR_HOST_RCB_OVERLAY_ID_20:
1694 ipr_log_fabric_error(ioa_cfg, hostrcb);
1695 break;
1696 case IPR_HOST_RCB_OVERLAY_ID_1:
1697 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1698 default:
1699 ipr_log_generic_error(ioa_cfg, hostrcb);
1700 break;
1701 }
1702 }
1703
1704 /**
1705 * ipr_process_error - Op done function for an adapter error log.
1706 * @ipr_cmd: ipr command struct
1707 *
1708 * This function is the op done function for an error log host
1709 * controlled async from the adapter. It will log the error and
1710 * send the HCAM back to the adapter.
1711 *
1712 * Return value:
1713 * none
1714 **/
1715 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1716 {
1717 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1718 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1719 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1720 u32 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1721
1722 list_del(&hostrcb->queue);
1723 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1724
1725 if (!ioasc) {
1726 ipr_handle_log_data(ioa_cfg, hostrcb);
1727 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
1728 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
1729 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1730 dev_err(&ioa_cfg->pdev->dev,
1731 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1732 }
1733
1734 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1735 }
1736
1737 /**
1738 * ipr_timeout - An internally generated op has timed out.
1739 * @ipr_cmd: ipr command struct
1740 *
1741 * This function blocks host requests and initiates an
1742 * adapter reset.
1743 *
1744 * Return value:
1745 * none
1746 **/
1747 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1748 {
1749 unsigned long lock_flags = 0;
1750 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1751
1752 ENTER;
1753 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1754
1755 ioa_cfg->errors_logged++;
1756 dev_err(&ioa_cfg->pdev->dev,
1757 "Adapter being reset due to command timeout.\n");
1758
1759 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1760 ioa_cfg->sdt_state = GET_DUMP;
1761
1762 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1763 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1764
1765 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1766 LEAVE;
1767 }
1768
1769 /**
1770 * ipr_oper_timeout - Adapter timed out transitioning to operational
1771 * @ipr_cmd: ipr command struct
1772 *
1773 * This function blocks host requests and initiates an
1774 * adapter reset.
1775 *
1776 * Return value:
1777 * none
1778 **/
1779 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1780 {
1781 unsigned long lock_flags = 0;
1782 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1783
1784 ENTER;
1785 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1786
1787 ioa_cfg->errors_logged++;
1788 dev_err(&ioa_cfg->pdev->dev,
1789 "Adapter timed out transitioning to operational.\n");
1790
1791 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1792 ioa_cfg->sdt_state = GET_DUMP;
1793
1794 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1795 if (ipr_fastfail)
1796 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1797 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1798 }
1799
1800 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1801 LEAVE;
1802 }
1803
1804 /**
1805 * ipr_reset_reload - Reset/Reload the IOA
1806 * @ioa_cfg: ioa config struct
1807 * @shutdown_type: shutdown type
1808 *
1809 * This function resets the adapter and re-initializes it.
1810 * This function assumes that all new host commands have been stopped.
1811 * Return value:
1812 * SUCCESS / FAILED
1813 **/
1814 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1815 enum ipr_shutdown_type shutdown_type)
1816 {
1817 if (!ioa_cfg->in_reset_reload)
1818 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1819
1820 spin_unlock_irq(ioa_cfg->host->host_lock);
1821 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1822 spin_lock_irq(ioa_cfg->host->host_lock);
1823
1824 /* If we got hit with a host reset while we were already resetting
1825 the adapter for some reason, and the reset failed. */
1826 if (ioa_cfg->ioa_is_dead) {
1827 ipr_trace;
1828 return FAILED;
1829 }
1830
1831 return SUCCESS;
1832 }
1833
1834 /**
1835 * ipr_find_ses_entry - Find matching SES in SES table
1836 * @res: resource entry struct of SES
1837 *
1838 * Return value:
1839 * pointer to SES table entry / NULL on failure
1840 **/
1841 static const struct ipr_ses_table_entry *
1842 ipr_find_ses_entry(struct ipr_resource_entry *res)
1843 {
1844 int i, j, matches;
1845 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1846
1847 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1848 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1849 if (ste->compare_product_id_byte[j] == 'X') {
1850 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1851 matches++;
1852 else
1853 break;
1854 } else
1855 matches++;
1856 }
1857
1858 if (matches == IPR_PROD_ID_LEN)
1859 return ste;
1860 }
1861
1862 return NULL;
1863 }
1864
1865 /**
1866 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1867 * @ioa_cfg: ioa config struct
1868 * @bus: SCSI bus
1869 * @bus_width: bus width
1870 *
1871 * Return value:
1872 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1873 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1874 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1875 * max 160MHz = max 320MB/sec).
1876 **/
1877 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1878 {
1879 struct ipr_resource_entry *res;
1880 const struct ipr_ses_table_entry *ste;
1881 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1882
1883 /* Loop through each config table entry in the config table buffer */
1884 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1885 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1886 continue;
1887
1888 if (bus != res->cfgte.res_addr.bus)
1889 continue;
1890
1891 if (!(ste = ipr_find_ses_entry(res)))
1892 continue;
1893
1894 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1895 }
1896
1897 return max_xfer_rate;
1898 }
1899
1900 /**
1901 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1902 * @ioa_cfg: ioa config struct
1903 * @max_delay: max delay in micro-seconds to wait
1904 *
1905 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1906 *
1907 * Return value:
1908 * 0 on success / other on failure
1909 **/
1910 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1911 {
1912 volatile u32 pcii_reg;
1913 int delay = 1;
1914
1915 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1916 while (delay < max_delay) {
1917 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1918
1919 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1920 return 0;
1921
1922 /* udelay cannot be used if delay is more than a few milliseconds */
1923 if ((delay / 1000) > MAX_UDELAY_MS)
1924 mdelay(delay / 1000);
1925 else
1926 udelay(delay);
1927
1928 delay += delay;
1929 }
1930 return -EIO;
1931 }
1932
1933 /**
1934 * ipr_get_ldump_data_section - Dump IOA memory
1935 * @ioa_cfg: ioa config struct
1936 * @start_addr: adapter address to dump
1937 * @dest: destination kernel buffer
1938 * @length_in_words: length to dump in 4 byte words
1939 *
1940 * Return value:
1941 * 0 on success / -EIO on failure
1942 **/
1943 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1944 u32 start_addr,
1945 __be32 *dest, u32 length_in_words)
1946 {
1947 volatile u32 temp_pcii_reg;
1948 int i, delay = 0;
1949
1950 /* Write IOA interrupt reg starting LDUMP state */
1951 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1952 ioa_cfg->regs.set_uproc_interrupt_reg);
1953
1954 /* Wait for IO debug acknowledge */
1955 if (ipr_wait_iodbg_ack(ioa_cfg,
1956 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1957 dev_err(&ioa_cfg->pdev->dev,
1958 "IOA dump long data transfer timeout\n");
1959 return -EIO;
1960 }
1961
1962 /* Signal LDUMP interlocked - clear IO debug ack */
1963 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1964 ioa_cfg->regs.clr_interrupt_reg);
1965
1966 /* Write Mailbox with starting address */
1967 writel(start_addr, ioa_cfg->ioa_mailbox);
1968
1969 /* Signal address valid - clear IOA Reset alert */
1970 writel(IPR_UPROCI_RESET_ALERT,
1971 ioa_cfg->regs.clr_uproc_interrupt_reg);
1972
1973 for (i = 0; i < length_in_words; i++) {
1974 /* Wait for IO debug acknowledge */
1975 if (ipr_wait_iodbg_ack(ioa_cfg,
1976 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1977 dev_err(&ioa_cfg->pdev->dev,
1978 "IOA dump short data transfer timeout\n");
1979 return -EIO;
1980 }
1981
1982 /* Read data from mailbox and increment destination pointer */
1983 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1984 dest++;
1985
1986 /* For all but the last word of data, signal data received */
1987 if (i < (length_in_words - 1)) {
1988 /* Signal dump data received - Clear IO debug Ack */
1989 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1990 ioa_cfg->regs.clr_interrupt_reg);
1991 }
1992 }
1993
1994 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1995 writel(IPR_UPROCI_RESET_ALERT,
1996 ioa_cfg->regs.set_uproc_interrupt_reg);
1997
1998 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1999 ioa_cfg->regs.clr_uproc_interrupt_reg);
2000
2001 /* Signal dump data received - Clear IO debug Ack */
2002 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2003 ioa_cfg->regs.clr_interrupt_reg);
2004
2005 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2006 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2007 temp_pcii_reg =
2008 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
2009
2010 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2011 return 0;
2012
2013 udelay(10);
2014 delay += 10;
2015 }
2016
2017 return 0;
2018 }
2019
2020 #ifdef CONFIG_SCSI_IPR_DUMP
2021 /**
2022 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2023 * @ioa_cfg: ioa config struct
2024 * @pci_address: adapter address
2025 * @length: length of data to copy
2026 *
2027 * Copy data from PCI adapter to kernel buffer.
2028 * Note: length MUST be a 4 byte multiple
2029 * Return value:
2030 * 0 on success / other on failure
2031 **/
2032 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2033 unsigned long pci_address, u32 length)
2034 {
2035 int bytes_copied = 0;
2036 int cur_len, rc, rem_len, rem_page_len;
2037 __be32 *page;
2038 unsigned long lock_flags = 0;
2039 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2040
2041 while (bytes_copied < length &&
2042 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
2043 if (ioa_dump->page_offset >= PAGE_SIZE ||
2044 ioa_dump->page_offset == 0) {
2045 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2046
2047 if (!page) {
2048 ipr_trace;
2049 return bytes_copied;
2050 }
2051
2052 ioa_dump->page_offset = 0;
2053 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2054 ioa_dump->next_page_index++;
2055 } else
2056 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2057
2058 rem_len = length - bytes_copied;
2059 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2060 cur_len = min(rem_len, rem_page_len);
2061
2062 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2063 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2064 rc = -EIO;
2065 } else {
2066 rc = ipr_get_ldump_data_section(ioa_cfg,
2067 pci_address + bytes_copied,
2068 &page[ioa_dump->page_offset / 4],
2069 (cur_len / sizeof(u32)));
2070 }
2071 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2072
2073 if (!rc) {
2074 ioa_dump->page_offset += cur_len;
2075 bytes_copied += cur_len;
2076 } else {
2077 ipr_trace;
2078 break;
2079 }
2080 schedule();
2081 }
2082
2083 return bytes_copied;
2084 }
2085
2086 /**
2087 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2088 * @hdr: dump entry header struct
2089 *
2090 * Return value:
2091 * nothing
2092 **/
2093 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2094 {
2095 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2096 hdr->num_elems = 1;
2097 hdr->offset = sizeof(*hdr);
2098 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2099 }
2100
2101 /**
2102 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2103 * @ioa_cfg: ioa config struct
2104 * @driver_dump: driver dump struct
2105 *
2106 * Return value:
2107 * nothing
2108 **/
2109 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2110 struct ipr_driver_dump *driver_dump)
2111 {
2112 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2113
2114 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2115 driver_dump->ioa_type_entry.hdr.len =
2116 sizeof(struct ipr_dump_ioa_type_entry) -
2117 sizeof(struct ipr_dump_entry_header);
2118 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2119 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2120 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2121 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2122 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2123 ucode_vpd->minor_release[1];
2124 driver_dump->hdr.num_entries++;
2125 }
2126
2127 /**
2128 * ipr_dump_version_data - Fill in the driver version in the dump.
2129 * @ioa_cfg: ioa config struct
2130 * @driver_dump: driver dump struct
2131 *
2132 * Return value:
2133 * nothing
2134 **/
2135 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2136 struct ipr_driver_dump *driver_dump)
2137 {
2138 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2139 driver_dump->version_entry.hdr.len =
2140 sizeof(struct ipr_dump_version_entry) -
2141 sizeof(struct ipr_dump_entry_header);
2142 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2143 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2144 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2145 driver_dump->hdr.num_entries++;
2146 }
2147
2148 /**
2149 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2150 * @ioa_cfg: ioa config struct
2151 * @driver_dump: driver dump struct
2152 *
2153 * Return value:
2154 * nothing
2155 **/
2156 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2157 struct ipr_driver_dump *driver_dump)
2158 {
2159 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2160 driver_dump->trace_entry.hdr.len =
2161 sizeof(struct ipr_dump_trace_entry) -
2162 sizeof(struct ipr_dump_entry_header);
2163 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2164 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2165 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2166 driver_dump->hdr.num_entries++;
2167 }
2168
2169 /**
2170 * ipr_dump_location_data - Fill in the IOA location in the dump.
2171 * @ioa_cfg: ioa config struct
2172 * @driver_dump: driver dump struct
2173 *
2174 * Return value:
2175 * nothing
2176 **/
2177 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2178 struct ipr_driver_dump *driver_dump)
2179 {
2180 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2181 driver_dump->location_entry.hdr.len =
2182 sizeof(struct ipr_dump_location_entry) -
2183 sizeof(struct ipr_dump_entry_header);
2184 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2185 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2186 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
2187 driver_dump->hdr.num_entries++;
2188 }
2189
2190 /**
2191 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2192 * @ioa_cfg: ioa config struct
2193 * @dump: dump struct
2194 *
2195 * Return value:
2196 * nothing
2197 **/
2198 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2199 {
2200 unsigned long start_addr, sdt_word;
2201 unsigned long lock_flags = 0;
2202 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2203 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2204 u32 num_entries, start_off, end_off;
2205 u32 bytes_to_copy, bytes_copied, rc;
2206 struct ipr_sdt *sdt;
2207 int i;
2208
2209 ENTER;
2210
2211 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2212
2213 if (ioa_cfg->sdt_state != GET_DUMP) {
2214 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2215 return;
2216 }
2217
2218 start_addr = readl(ioa_cfg->ioa_mailbox);
2219
2220 if (!ipr_sdt_is_fmt2(start_addr)) {
2221 dev_err(&ioa_cfg->pdev->dev,
2222 "Invalid dump table format: %lx\n", start_addr);
2223 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2224 return;
2225 }
2226
2227 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2228
2229 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2230
2231 /* Initialize the overall dump header */
2232 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2233 driver_dump->hdr.num_entries = 1;
2234 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2235 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2236 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2237 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2238
2239 ipr_dump_version_data(ioa_cfg, driver_dump);
2240 ipr_dump_location_data(ioa_cfg, driver_dump);
2241 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2242 ipr_dump_trace_data(ioa_cfg, driver_dump);
2243
2244 /* Update dump_header */
2245 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2246
2247 /* IOA Dump entry */
2248 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2249 ioa_dump->format = IPR_SDT_FMT2;
2250 ioa_dump->hdr.len = 0;
2251 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2252 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2253
2254 /* First entries in sdt are actually a list of dump addresses and
2255 lengths to gather the real dump data. sdt represents the pointer
2256 to the ioa generated dump table. Dump data will be extracted based
2257 on entries in this table */
2258 sdt = &ioa_dump->sdt;
2259
2260 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2261 sizeof(struct ipr_sdt) / sizeof(__be32));
2262
2263 /* Smart Dump table is ready to use and the first entry is valid */
2264 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
2265 dev_err(&ioa_cfg->pdev->dev,
2266 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2267 rc, be32_to_cpu(sdt->hdr.state));
2268 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2269 ioa_cfg->sdt_state = DUMP_OBTAINED;
2270 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2271 return;
2272 }
2273
2274 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2275
2276 if (num_entries > IPR_NUM_SDT_ENTRIES)
2277 num_entries = IPR_NUM_SDT_ENTRIES;
2278
2279 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2280
2281 for (i = 0; i < num_entries; i++) {
2282 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2283 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2284 break;
2285 }
2286
2287 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2288 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
2289 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2290 end_off = be32_to_cpu(sdt->entry[i].end_offset);
2291
2292 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
2293 bytes_to_copy = end_off - start_off;
2294 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2295 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2296 continue;
2297 }
2298
2299 /* Copy data from adapter to driver buffers */
2300 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2301 bytes_to_copy);
2302
2303 ioa_dump->hdr.len += bytes_copied;
2304
2305 if (bytes_copied != bytes_to_copy) {
2306 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2307 break;
2308 }
2309 }
2310 }
2311 }
2312
2313 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2314
2315 /* Update dump_header */
2316 driver_dump->hdr.len += ioa_dump->hdr.len;
2317 wmb();
2318 ioa_cfg->sdt_state = DUMP_OBTAINED;
2319 LEAVE;
2320 }
2321
2322 #else
2323 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2324 #endif
2325
2326 /**
2327 * ipr_release_dump - Free adapter dump memory
2328 * @kref: kref struct
2329 *
2330 * Return value:
2331 * nothing
2332 **/
2333 static void ipr_release_dump(struct kref *kref)
2334 {
2335 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2336 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2337 unsigned long lock_flags = 0;
2338 int i;
2339
2340 ENTER;
2341 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2342 ioa_cfg->dump = NULL;
2343 ioa_cfg->sdt_state = INACTIVE;
2344 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2345
2346 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2347 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2348
2349 kfree(dump);
2350 LEAVE;
2351 }
2352
2353 /**
2354 * ipr_worker_thread - Worker thread
2355 * @work: ioa config struct
2356 *
2357 * Called at task level from a work thread. This function takes care
2358 * of adding and removing device from the mid-layer as configuration
2359 * changes are detected by the adapter.
2360 *
2361 * Return value:
2362 * nothing
2363 **/
2364 static void ipr_worker_thread(struct work_struct *work)
2365 {
2366 unsigned long lock_flags;
2367 struct ipr_resource_entry *res;
2368 struct scsi_device *sdev;
2369 struct ipr_dump *dump;
2370 struct ipr_ioa_cfg *ioa_cfg =
2371 container_of(work, struct ipr_ioa_cfg, work_q);
2372 u8 bus, target, lun;
2373 int did_work;
2374
2375 ENTER;
2376 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2377
2378 if (ioa_cfg->sdt_state == GET_DUMP) {
2379 dump = ioa_cfg->dump;
2380 if (!dump) {
2381 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2382 return;
2383 }
2384 kref_get(&dump->kref);
2385 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2386 ipr_get_ioa_dump(ioa_cfg, dump);
2387 kref_put(&dump->kref, ipr_release_dump);
2388
2389 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2390 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2391 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2392 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2393 return;
2394 }
2395
2396 restart:
2397 do {
2398 did_work = 0;
2399 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2400 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2401 return;
2402 }
2403
2404 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2405 if (res->del_from_ml && res->sdev) {
2406 did_work = 1;
2407 sdev = res->sdev;
2408 if (!scsi_device_get(sdev)) {
2409 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2410 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2411 scsi_remove_device(sdev);
2412 scsi_device_put(sdev);
2413 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2414 }
2415 break;
2416 }
2417 }
2418 } while(did_work);
2419
2420 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2421 if (res->add_to_ml) {
2422 bus = res->cfgte.res_addr.bus;
2423 target = res->cfgte.res_addr.target;
2424 lun = res->cfgte.res_addr.lun;
2425 res->add_to_ml = 0;
2426 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2427 scsi_add_device(ioa_cfg->host, bus, target, lun);
2428 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2429 goto restart;
2430 }
2431 }
2432
2433 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2434 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE);
2435 LEAVE;
2436 }
2437
2438 #ifdef CONFIG_SCSI_IPR_TRACE
2439 /**
2440 * ipr_read_trace - Dump the adapter trace
2441 * @kobj: kobject struct
2442 * @buf: buffer
2443 * @off: offset
2444 * @count: buffer size
2445 *
2446 * Return value:
2447 * number of bytes printed to buffer
2448 **/
2449 static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
2450 loff_t off, size_t count)
2451 {
2452 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2453 struct Scsi_Host *shost = class_to_shost(cdev);
2454 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2455 unsigned long lock_flags = 0;
2456 int size = IPR_TRACE_SIZE;
2457 char *src = (char *)ioa_cfg->trace;
2458
2459 if (off > size)
2460 return 0;
2461 if (off + count > size) {
2462 size -= off;
2463 count = size;
2464 }
2465
2466 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2467 memcpy(buf, &src[off], count);
2468 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2469 return count;
2470 }
2471
2472 static struct bin_attribute ipr_trace_attr = {
2473 .attr = {
2474 .name = "trace",
2475 .mode = S_IRUGO,
2476 },
2477 .size = 0,
2478 .read = ipr_read_trace,
2479 };
2480 #endif
2481
2482 static const struct {
2483 enum ipr_cache_state state;
2484 char *name;
2485 } cache_state [] = {
2486 { CACHE_NONE, "none" },
2487 { CACHE_DISABLED, "disabled" },
2488 { CACHE_ENABLED, "enabled" }
2489 };
2490
2491 /**
2492 * ipr_show_write_caching - Show the write caching attribute
2493 * @class_dev: class device struct
2494 * @buf: buffer
2495 *
2496 * Return value:
2497 * number of bytes printed to buffer
2498 **/
2499 static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf)
2500 {
2501 struct Scsi_Host *shost = class_to_shost(class_dev);
2502 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2503 unsigned long lock_flags = 0;
2504 int i, len = 0;
2505
2506 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2507 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2508 if (cache_state[i].state == ioa_cfg->cache_state) {
2509 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2510 break;
2511 }
2512 }
2513 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2514 return len;
2515 }
2516
2517
2518 /**
2519 * ipr_store_write_caching - Enable/disable adapter write cache
2520 * @class_dev: class_device struct
2521 * @buf: buffer
2522 * @count: buffer size
2523 *
2524 * This function will enable/disable adapter write cache.
2525 *
2526 * Return value:
2527 * count on success / other on failure
2528 **/
2529 static ssize_t ipr_store_write_caching(struct class_device *class_dev,
2530 const char *buf, size_t count)
2531 {
2532 struct Scsi_Host *shost = class_to_shost(class_dev);
2533 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2534 unsigned long lock_flags = 0;
2535 enum ipr_cache_state new_state = CACHE_INVALID;
2536 int i;
2537
2538 if (!capable(CAP_SYS_ADMIN))
2539 return -EACCES;
2540 if (ioa_cfg->cache_state == CACHE_NONE)
2541 return -EINVAL;
2542
2543 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2544 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2545 new_state = cache_state[i].state;
2546 break;
2547 }
2548 }
2549
2550 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2551 return -EINVAL;
2552
2553 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2554 if (ioa_cfg->cache_state == new_state) {
2555 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2556 return count;
2557 }
2558
2559 ioa_cfg->cache_state = new_state;
2560 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2561 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2562 if (!ioa_cfg->in_reset_reload)
2563 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2564 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2565 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2566
2567 return count;
2568 }
2569
2570 static struct class_device_attribute ipr_ioa_cache_attr = {
2571 .attr = {
2572 .name = "write_cache",
2573 .mode = S_IRUGO | S_IWUSR,
2574 },
2575 .show = ipr_show_write_caching,
2576 .store = ipr_store_write_caching
2577 };
2578
2579 /**
2580 * ipr_show_fw_version - Show the firmware version
2581 * @class_dev: class device struct
2582 * @buf: buffer
2583 *
2584 * Return value:
2585 * number of bytes printed to buffer
2586 **/
2587 static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
2588 {
2589 struct Scsi_Host *shost = class_to_shost(class_dev);
2590 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2591 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2592 unsigned long lock_flags = 0;
2593 int len;
2594
2595 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2596 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2597 ucode_vpd->major_release, ucode_vpd->card_type,
2598 ucode_vpd->minor_release[0],
2599 ucode_vpd->minor_release[1]);
2600 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2601 return len;
2602 }
2603
2604 static struct class_device_attribute ipr_fw_version_attr = {
2605 .attr = {
2606 .name = "fw_version",
2607 .mode = S_IRUGO,
2608 },
2609 .show = ipr_show_fw_version,
2610 };
2611
2612 /**
2613 * ipr_show_log_level - Show the adapter's error logging level
2614 * @class_dev: class device struct
2615 * @buf: buffer
2616 *
2617 * Return value:
2618 * number of bytes printed to buffer
2619 **/
2620 static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2621 {
2622 struct Scsi_Host *shost = class_to_shost(class_dev);
2623 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2624 unsigned long lock_flags = 0;
2625 int len;
2626
2627 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2628 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2629 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2630 return len;
2631 }
2632
2633 /**
2634 * ipr_store_log_level - Change the adapter's error logging level
2635 * @class_dev: class device struct
2636 * @buf: buffer
2637 *
2638 * Return value:
2639 * number of bytes printed to buffer
2640 **/
2641 static ssize_t ipr_store_log_level(struct class_device *class_dev,
2642 const char *buf, size_t count)
2643 {
2644 struct Scsi_Host *shost = class_to_shost(class_dev);
2645 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2646 unsigned long lock_flags = 0;
2647
2648 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2649 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2650 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2651 return strlen(buf);
2652 }
2653
2654 static struct class_device_attribute ipr_log_level_attr = {
2655 .attr = {
2656 .name = "log_level",
2657 .mode = S_IRUGO | S_IWUSR,
2658 },
2659 .show = ipr_show_log_level,
2660 .store = ipr_store_log_level
2661 };
2662
2663 /**
2664 * ipr_store_diagnostics - IOA Diagnostics interface
2665 * @class_dev: class_device struct
2666 * @buf: buffer
2667 * @count: buffer size
2668 *
2669 * This function will reset the adapter and wait a reasonable
2670 * amount of time for any errors that the adapter might log.
2671 *
2672 * Return value:
2673 * count on success / other on failure
2674 **/
2675 static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2676 const char *buf, size_t count)
2677 {
2678 struct Scsi_Host *shost = class_to_shost(class_dev);
2679 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2680 unsigned long lock_flags = 0;
2681 int rc = count;
2682
2683 if (!capable(CAP_SYS_ADMIN))
2684 return -EACCES;
2685
2686 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2687 while(ioa_cfg->in_reset_reload) {
2688 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2689 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2690 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2691 }
2692
2693 ioa_cfg->errors_logged = 0;
2694 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2695
2696 if (ioa_cfg->in_reset_reload) {
2697 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2698 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2699
2700 /* Wait for a second for any errors to be logged */
2701 msleep(1000);
2702 } else {
2703 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2704 return -EIO;
2705 }
2706
2707 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2708 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2709 rc = -EIO;
2710 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2711
2712 return rc;
2713 }
2714
2715 static struct class_device_attribute ipr_diagnostics_attr = {
2716 .attr = {
2717 .name = "run_diagnostics",
2718 .mode = S_IWUSR,
2719 },
2720 .store = ipr_store_diagnostics
2721 };
2722
2723 /**
2724 * ipr_show_adapter_state - Show the adapter's state
2725 * @class_dev: class device struct
2726 * @buf: buffer
2727 *
2728 * Return value:
2729 * number of bytes printed to buffer
2730 **/
2731 static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf)
2732 {
2733 struct Scsi_Host *shost = class_to_shost(class_dev);
2734 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2735 unsigned long lock_flags = 0;
2736 int len;
2737
2738 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2739 if (ioa_cfg->ioa_is_dead)
2740 len = snprintf(buf, PAGE_SIZE, "offline\n");
2741 else
2742 len = snprintf(buf, PAGE_SIZE, "online\n");
2743 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2744 return len;
2745 }
2746
2747 /**
2748 * ipr_store_adapter_state - Change adapter state
2749 * @class_dev: class_device struct
2750 * @buf: buffer
2751 * @count: buffer size
2752 *
2753 * This function will change the adapter's state.
2754 *
2755 * Return value:
2756 * count on success / other on failure
2757 **/
2758 static ssize_t ipr_store_adapter_state(struct class_device *class_dev,
2759 const char *buf, size_t count)
2760 {
2761 struct Scsi_Host *shost = class_to_shost(class_dev);
2762 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2763 unsigned long lock_flags;
2764 int result = count;
2765
2766 if (!capable(CAP_SYS_ADMIN))
2767 return -EACCES;
2768
2769 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2770 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2771 ioa_cfg->ioa_is_dead = 0;
2772 ioa_cfg->reset_retries = 0;
2773 ioa_cfg->in_ioa_bringdown = 0;
2774 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2775 }
2776 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2777 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2778
2779 return result;
2780 }
2781
2782 static struct class_device_attribute ipr_ioa_state_attr = {
2783 .attr = {
2784 .name = "state",
2785 .mode = S_IRUGO | S_IWUSR,
2786 },
2787 .show = ipr_show_adapter_state,
2788 .store = ipr_store_adapter_state
2789 };
2790
2791 /**
2792 * ipr_store_reset_adapter - Reset the adapter
2793 * @class_dev: class_device struct
2794 * @buf: buffer
2795 * @count: buffer size
2796 *
2797 * This function will reset the adapter.
2798 *
2799 * Return value:
2800 * count on success / other on failure
2801 **/
2802 static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2803 const char *buf, size_t count)
2804 {
2805 struct Scsi_Host *shost = class_to_shost(class_dev);
2806 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2807 unsigned long lock_flags;
2808 int result = count;
2809
2810 if (!capable(CAP_SYS_ADMIN))
2811 return -EACCES;
2812
2813 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2814 if (!ioa_cfg->in_reset_reload)
2815 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2816 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2817 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2818
2819 return result;
2820 }
2821
2822 static struct class_device_attribute ipr_ioa_reset_attr = {
2823 .attr = {
2824 .name = "reset_host",
2825 .mode = S_IWUSR,
2826 },
2827 .store = ipr_store_reset_adapter
2828 };
2829
2830 /**
2831 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2832 * @buf_len: buffer length
2833 *
2834 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2835 * list to use for microcode download
2836 *
2837 * Return value:
2838 * pointer to sglist / NULL on failure
2839 **/
2840 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2841 {
2842 int sg_size, order, bsize_elem, num_elem, i, j;
2843 struct ipr_sglist *sglist;
2844 struct scatterlist *scatterlist;
2845 struct page *page;
2846
2847 /* Get the minimum size per scatter/gather element */
2848 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2849
2850 /* Get the actual size per element */
2851 order = get_order(sg_size);
2852
2853 /* Determine the actual number of bytes per element */
2854 bsize_elem = PAGE_SIZE * (1 << order);
2855
2856 /* Determine the actual number of sg entries needed */
2857 if (buf_len % bsize_elem)
2858 num_elem = (buf_len / bsize_elem) + 1;
2859 else
2860 num_elem = buf_len / bsize_elem;
2861
2862 /* Allocate a scatter/gather list for the DMA */
2863 sglist = kzalloc(sizeof(struct ipr_sglist) +
2864 (sizeof(struct scatterlist) * (num_elem - 1)),
2865 GFP_KERNEL);
2866
2867 if (sglist == NULL) {
2868 ipr_trace;
2869 return NULL;
2870 }
2871
2872 scatterlist = sglist->scatterlist;
2873
2874 sglist->order = order;
2875 sglist->num_sg = num_elem;
2876
2877 /* Allocate a bunch of sg elements */
2878 for (i = 0; i < num_elem; i++) {
2879 page = alloc_pages(GFP_KERNEL, order);
2880 if (!page) {
2881 ipr_trace;
2882
2883 /* Free up what we already allocated */
2884 for (j = i - 1; j >= 0; j--)
2885 __free_pages(scatterlist[j].page, order);
2886 kfree(sglist);
2887 return NULL;
2888 }
2889
2890 scatterlist[i].page = page;
2891 }
2892
2893 return sglist;
2894 }
2895
2896 /**
2897 * ipr_free_ucode_buffer - Frees a microcode download buffer
2898 * @p_dnld: scatter/gather list pointer
2899 *
2900 * Free a DMA'able ucode download buffer previously allocated with
2901 * ipr_alloc_ucode_buffer
2902 *
2903 * Return value:
2904 * nothing
2905 **/
2906 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2907 {
2908 int i;
2909
2910 for (i = 0; i < sglist->num_sg; i++)
2911 __free_pages(sglist->scatterlist[i].page, sglist->order);
2912
2913 kfree(sglist);
2914 }
2915
2916 /**
2917 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2918 * @sglist: scatter/gather list pointer
2919 * @buffer: buffer pointer
2920 * @len: buffer length
2921 *
2922 * Copy a microcode image from a user buffer into a buffer allocated by
2923 * ipr_alloc_ucode_buffer
2924 *
2925 * Return value:
2926 * 0 on success / other on failure
2927 **/
2928 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2929 u8 *buffer, u32 len)
2930 {
2931 int bsize_elem, i, result = 0;
2932 struct scatterlist *scatterlist;
2933 void *kaddr;
2934
2935 /* Determine the actual number of bytes per element */
2936 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2937
2938 scatterlist = sglist->scatterlist;
2939
2940 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2941 kaddr = kmap(scatterlist[i].page);
2942 memcpy(kaddr, buffer, bsize_elem);
2943 kunmap(scatterlist[i].page);
2944
2945 scatterlist[i].length = bsize_elem;
2946
2947 if (result != 0) {
2948 ipr_trace;
2949 return result;
2950 }
2951 }
2952
2953 if (len % bsize_elem) {
2954 kaddr = kmap(scatterlist[i].page);
2955 memcpy(kaddr, buffer, len % bsize_elem);
2956 kunmap(scatterlist[i].page);
2957
2958 scatterlist[i].length = len % bsize_elem;
2959 }
2960
2961 sglist->buffer_len = len;
2962 return result;
2963 }
2964
2965 /**
2966 * ipr_build_ucode_ioadl - Build a microcode download IOADL
2967 * @ipr_cmd: ipr command struct
2968 * @sglist: scatter/gather list
2969 *
2970 * Builds a microcode download IOA data list (IOADL).
2971 *
2972 **/
2973 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2974 struct ipr_sglist *sglist)
2975 {
2976 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2977 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2978 struct scatterlist *scatterlist = sglist->scatterlist;
2979 int i;
2980
2981 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
2982 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
2983 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
2984 ioarcb->write_ioadl_len =
2985 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2986
2987 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2988 ioadl[i].flags_and_data_len =
2989 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2990 ioadl[i].address =
2991 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2992 }
2993
2994 ioadl[i-1].flags_and_data_len |=
2995 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2996 }
2997
2998 /**
2999 * ipr_update_ioa_ucode - Update IOA's microcode
3000 * @ioa_cfg: ioa config struct
3001 * @sglist: scatter/gather list
3002 *
3003 * Initiate an adapter reset to update the IOA's microcode
3004 *
3005 * Return value:
3006 * 0 on success / -EIO on failure
3007 **/
3008 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3009 struct ipr_sglist *sglist)
3010 {
3011 unsigned long lock_flags;
3012
3013 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3014 while(ioa_cfg->in_reset_reload) {
3015 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3016 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3017 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3018 }
3019
3020 if (ioa_cfg->ucode_sglist) {
3021 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3022 dev_err(&ioa_cfg->pdev->dev,
3023 "Microcode download already in progress\n");
3024 return -EIO;
3025 }
3026
3027 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3028 sglist->num_sg, DMA_TO_DEVICE);
3029
3030 if (!sglist->num_dma_sg) {
3031 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3032 dev_err(&ioa_cfg->pdev->dev,
3033 "Failed to map microcode download buffer!\n");
3034 return -EIO;
3035 }
3036
3037 ioa_cfg->ucode_sglist = sglist;
3038 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3039 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3040 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3041
3042 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3043 ioa_cfg->ucode_sglist = NULL;
3044 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3045 return 0;
3046 }
3047
3048 /**
3049 * ipr_store_update_fw - Update the firmware on the adapter
3050 * @class_dev: class_device struct
3051 * @buf: buffer
3052 * @count: buffer size
3053 *
3054 * This function will update the firmware on the adapter.
3055 *
3056 * Return value:
3057 * count on success / other on failure
3058 **/
3059 static ssize_t ipr_store_update_fw(struct class_device *class_dev,
3060 const char *buf, size_t count)
3061 {
3062 struct Scsi_Host *shost = class_to_shost(class_dev);
3063 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3064 struct ipr_ucode_image_header *image_hdr;
3065 const struct firmware *fw_entry;
3066 struct ipr_sglist *sglist;
3067 char fname[100];
3068 char *src;
3069 int len, result, dnld_size;
3070
3071 if (!capable(CAP_SYS_ADMIN))
3072 return -EACCES;
3073
3074 len = snprintf(fname, 99, "%s", buf);
3075 fname[len-1] = '\0';
3076
3077 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3078 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3079 return -EIO;
3080 }
3081
3082 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3083
3084 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3085 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3086 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3087 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3088 release_firmware(fw_entry);
3089 return -EINVAL;
3090 }
3091
3092 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3093 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3094 sglist = ipr_alloc_ucode_buffer(dnld_size);
3095
3096 if (!sglist) {
3097 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3098 release_firmware(fw_entry);
3099 return -ENOMEM;
3100 }
3101
3102 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3103
3104 if (result) {
3105 dev_err(&ioa_cfg->pdev->dev,
3106 "Microcode buffer copy to DMA buffer failed\n");
3107 goto out;
3108 }
3109
3110 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3111
3112 if (!result)
3113 result = count;
3114 out:
3115 ipr_free_ucode_buffer(sglist);
3116 release_firmware(fw_entry);
3117 return result;
3118 }
3119
3120 static struct class_device_attribute ipr_update_fw_attr = {
3121 .attr = {
3122 .name = "update_fw",
3123 .mode = S_IWUSR,
3124 },
3125 .store = ipr_store_update_fw
3126 };
3127
3128 static struct class_device_attribute *ipr_ioa_attrs[] = {
3129 &ipr_fw_version_attr,
3130 &ipr_log_level_attr,
3131 &ipr_diagnostics_attr,
3132 &ipr_ioa_state_attr,
3133 &ipr_ioa_reset_attr,
3134 &ipr_update_fw_attr,
3135 &ipr_ioa_cache_attr,
3136 NULL,
3137 };
3138
3139 #ifdef CONFIG_SCSI_IPR_DUMP
3140 /**
3141 * ipr_read_dump - Dump the adapter
3142 * @kobj: kobject struct
3143 * @buf: buffer
3144 * @off: offset
3145 * @count: buffer size
3146 *
3147 * Return value:
3148 * number of bytes printed to buffer
3149 **/
3150 static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
3151 loff_t off, size_t count)
3152 {
3153 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3154 struct Scsi_Host *shost = class_to_shost(cdev);
3155 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3156 struct ipr_dump *dump;
3157 unsigned long lock_flags = 0;
3158 char *src;
3159 int len;
3160 size_t rc = count;
3161
3162 if (!capable(CAP_SYS_ADMIN))
3163 return -EACCES;
3164
3165 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3166 dump = ioa_cfg->dump;
3167
3168 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3169 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3170 return 0;
3171 }
3172 kref_get(&dump->kref);
3173 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3174
3175 if (off > dump->driver_dump.hdr.len) {
3176 kref_put(&dump->kref, ipr_release_dump);
3177 return 0;
3178 }
3179
3180 if (off + count > dump->driver_dump.hdr.len) {
3181 count = dump->driver_dump.hdr.len - off;
3182 rc = count;
3183 }
3184
3185 if (count && off < sizeof(dump->driver_dump)) {
3186 if (off + count > sizeof(dump->driver_dump))
3187 len = sizeof(dump->driver_dump) - off;
3188 else
3189 len = count;
3190 src = (u8 *)&dump->driver_dump + off;
3191 memcpy(buf, src, len);
3192 buf += len;
3193 off += len;
3194 count -= len;
3195 }
3196
3197 off -= sizeof(dump->driver_dump);
3198
3199 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3200 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3201 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3202 else
3203 len = count;
3204 src = (u8 *)&dump->ioa_dump + off;
3205 memcpy(buf, src, len);
3206 buf += len;
3207 off += len;
3208 count -= len;
3209 }
3210
3211 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3212
3213 while (count) {
3214 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3215 len = PAGE_ALIGN(off) - off;
3216 else
3217 len = count;
3218 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3219 src += off & ~PAGE_MASK;
3220 memcpy(buf, src, len);
3221 buf += len;
3222 off += len;
3223 count -= len;
3224 }
3225
3226 kref_put(&dump->kref, ipr_release_dump);
3227 return rc;
3228 }
3229
3230 /**
3231 * ipr_alloc_dump - Prepare for adapter dump
3232 * @ioa_cfg: ioa config struct
3233 *
3234 * Return value:
3235 * 0 on success / other on failure
3236 **/
3237 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3238 {
3239 struct ipr_dump *dump;
3240 unsigned long lock_flags = 0;
3241
3242 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
3243
3244 if (!dump) {
3245 ipr_err("Dump memory allocation failed\n");
3246 return -ENOMEM;
3247 }
3248
3249 kref_init(&dump->kref);
3250 dump->ioa_cfg = ioa_cfg;
3251
3252 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3253
3254 if (INACTIVE != ioa_cfg->sdt_state) {
3255 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3256 kfree(dump);
3257 return 0;
3258 }
3259
3260 ioa_cfg->dump = dump;
3261 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3262 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3263 ioa_cfg->dump_taken = 1;
3264 schedule_work(&ioa_cfg->work_q);
3265 }
3266 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3267
3268 return 0;
3269 }
3270
3271 /**
3272 * ipr_free_dump - Free adapter dump memory
3273 * @ioa_cfg: ioa config struct
3274 *
3275 * Return value:
3276 * 0 on success / other on failure
3277 **/
3278 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3279 {
3280 struct ipr_dump *dump;
3281 unsigned long lock_flags = 0;
3282
3283 ENTER;
3284
3285 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3286 dump = ioa_cfg->dump;
3287 if (!dump) {
3288 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3289 return 0;
3290 }
3291
3292 ioa_cfg->dump = NULL;
3293 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3294
3295 kref_put(&dump->kref, ipr_release_dump);
3296
3297 LEAVE;
3298 return 0;
3299 }
3300
3301 /**
3302 * ipr_write_dump - Setup dump state of adapter
3303 * @kobj: kobject struct
3304 * @buf: buffer
3305 * @off: offset
3306 * @count: buffer size
3307 *
3308 * Return value:
3309 * number of bytes printed to buffer
3310 **/
3311 static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
3312 loff_t off, size_t count)
3313 {
3314 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3315 struct Scsi_Host *shost = class_to_shost(cdev);
3316 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3317 int rc;
3318
3319 if (!capable(CAP_SYS_ADMIN))
3320 return -EACCES;
3321
3322 if (buf[0] == '1')
3323 rc = ipr_alloc_dump(ioa_cfg);
3324 else if (buf[0] == '0')
3325 rc = ipr_free_dump(ioa_cfg);
3326 else
3327 return -EINVAL;
3328
3329 if (rc)
3330 return rc;
3331 else
3332 return count;
3333 }
3334
3335 static struct bin_attribute ipr_dump_attr = {
3336 .attr = {
3337 .name = "dump",
3338 .mode = S_IRUSR | S_IWUSR,
3339 },
3340 .size = 0,
3341 .read = ipr_read_dump,
3342 .write = ipr_write_dump
3343 };
3344 #else
3345 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3346 #endif
3347
3348 /**
3349 * ipr_change_queue_depth - Change the device's queue depth
3350 * @sdev: scsi device struct
3351 * @qdepth: depth to set
3352 *
3353 * Return value:
3354 * actual depth set
3355 **/
3356 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3357 {
3358 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3359 struct ipr_resource_entry *res;
3360 unsigned long lock_flags = 0;
3361
3362 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3363 res = (struct ipr_resource_entry *)sdev->hostdata;
3364
3365 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3366 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3367 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3368
3369 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3370 return sdev->queue_depth;
3371 }
3372
3373 /**
3374 * ipr_change_queue_type - Change the device's queue type
3375 * @dsev: scsi device struct
3376 * @tag_type: type of tags to use
3377 *
3378 * Return value:
3379 * actual queue type set
3380 **/
3381 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3382 {
3383 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3384 struct ipr_resource_entry *res;
3385 unsigned long lock_flags = 0;
3386
3387 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3388 res = (struct ipr_resource_entry *)sdev->hostdata;
3389
3390 if (res) {
3391 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3392 /*
3393 * We don't bother quiescing the device here since the
3394 * adapter firmware does it for us.
3395 */
3396 scsi_set_tag_type(sdev, tag_type);
3397
3398 if (tag_type)
3399 scsi_activate_tcq(sdev, sdev->queue_depth);
3400 else
3401 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3402 } else
3403 tag_type = 0;
3404 } else
3405 tag_type = 0;
3406
3407 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3408 return tag_type;
3409 }
3410
3411 /**
3412 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3413 * @dev: device struct
3414 * @buf: buffer
3415 *
3416 * Return value:
3417 * number of bytes printed to buffer
3418 **/
3419 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
3420 {
3421 struct scsi_device *sdev = to_scsi_device(dev);
3422 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3423 struct ipr_resource_entry *res;
3424 unsigned long lock_flags = 0;
3425 ssize_t len = -ENXIO;
3426
3427 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3428 res = (struct ipr_resource_entry *)sdev->hostdata;
3429 if (res)
3430 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3431 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3432 return len;
3433 }
3434
3435 static struct device_attribute ipr_adapter_handle_attr = {
3436 .attr = {
3437 .name = "adapter_handle",
3438 .mode = S_IRUSR,
3439 },
3440 .show = ipr_show_adapter_handle
3441 };
3442
3443 static struct device_attribute *ipr_dev_attrs[] = {
3444 &ipr_adapter_handle_attr,
3445 NULL,
3446 };
3447
3448 /**
3449 * ipr_biosparam - Return the HSC mapping
3450 * @sdev: scsi device struct
3451 * @block_device: block device pointer
3452 * @capacity: capacity of the device
3453 * @parm: Array containing returned HSC values.
3454 *
3455 * This function generates the HSC parms that fdisk uses.
3456 * We want to make sure we return something that places partitions
3457 * on 4k boundaries for best performance with the IOA.
3458 *
3459 * Return value:
3460 * 0 on success
3461 **/
3462 static int ipr_biosparam(struct scsi_device *sdev,
3463 struct block_device *block_device,
3464 sector_t capacity, int *parm)
3465 {
3466 int heads, sectors;
3467 sector_t cylinders;
3468
3469 heads = 128;
3470 sectors = 32;
3471
3472 cylinders = capacity;
3473 sector_div(cylinders, (128 * 32));
3474
3475 /* return result */
3476 parm[0] = heads;
3477 parm[1] = sectors;
3478 parm[2] = cylinders;
3479
3480 return 0;
3481 }
3482
3483 /**
3484 * ipr_find_starget - Find target based on bus/target.
3485 * @starget: scsi target struct
3486 *
3487 * Return value:
3488 * resource entry pointer if found / NULL if not found
3489 **/
3490 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3491 {
3492 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3493 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3494 struct ipr_resource_entry *res;
3495
3496 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3497 if ((res->cfgte.res_addr.bus == starget->channel) &&
3498 (res->cfgte.res_addr.target == starget->id) &&
3499 (res->cfgte.res_addr.lun == 0)) {
3500 return res;
3501 }
3502 }
3503
3504 return NULL;
3505 }
3506
3507 static struct ata_port_info sata_port_info;
3508
3509 /**
3510 * ipr_target_alloc - Prepare for commands to a SCSI target
3511 * @starget: scsi target struct
3512 *
3513 * If the device is a SATA device, this function allocates an
3514 * ATA port with libata, else it does nothing.
3515 *
3516 * Return value:
3517 * 0 on success / non-0 on failure
3518 **/
3519 static int ipr_target_alloc(struct scsi_target *starget)
3520 {
3521 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3522 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3523 struct ipr_sata_port *sata_port;
3524 struct ata_port *ap;
3525 struct ipr_resource_entry *res;
3526 unsigned long lock_flags;
3527
3528 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3529 res = ipr_find_starget(starget);
3530 starget->hostdata = NULL;
3531
3532 if (res && ipr_is_gata(res)) {
3533 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3534 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3535 if (!sata_port)
3536 return -ENOMEM;
3537
3538 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3539 if (ap) {
3540 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3541 sata_port->ioa_cfg = ioa_cfg;
3542 sata_port->ap = ap;
3543 sata_port->res = res;
3544
3545 res->sata_port = sata_port;
3546 ap->private_data = sata_port;
3547 starget->hostdata = sata_port;
3548 } else {
3549 kfree(sata_port);
3550 return -ENOMEM;
3551 }
3552 }
3553 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3554
3555 return 0;
3556 }
3557
3558 /**
3559 * ipr_target_destroy - Destroy a SCSI target
3560 * @starget: scsi target struct
3561 *
3562 * If the device was a SATA device, this function frees the libata
3563 * ATA port, else it does nothing.
3564 *
3565 **/
3566 static void ipr_target_destroy(struct scsi_target *starget)
3567 {
3568 struct ipr_sata_port *sata_port = starget->hostdata;
3569
3570 if (sata_port) {
3571 starget->hostdata = NULL;
3572 ata_sas_port_destroy(sata_port->ap);
3573 kfree(sata_port);
3574 }
3575 }
3576
3577 /**
3578 * ipr_find_sdev - Find device based on bus/target/lun.
3579 * @sdev: scsi device struct
3580 *
3581 * Return value:
3582 * resource entry pointer if found / NULL if not found
3583 **/
3584 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3585 {
3586 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3587 struct ipr_resource_entry *res;
3588
3589 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3590 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3591 (res->cfgte.res_addr.target == sdev->id) &&
3592 (res->cfgte.res_addr.lun == sdev->lun))
3593 return res;
3594 }
3595
3596 return NULL;
3597 }
3598
3599 /**
3600 * ipr_slave_destroy - Unconfigure a SCSI device
3601 * @sdev: scsi device struct
3602 *
3603 * Return value:
3604 * nothing
3605 **/
3606 static void ipr_slave_destroy(struct scsi_device *sdev)
3607 {
3608 struct ipr_resource_entry *res;
3609 struct ipr_ioa_cfg *ioa_cfg;
3610 unsigned long lock_flags = 0;
3611
3612 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3613
3614 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3615 res = (struct ipr_resource_entry *) sdev->hostdata;
3616 if (res) {
3617 if (res->sata_port)
3618 ata_port_disable(res->sata_port->ap);
3619 sdev->hostdata = NULL;
3620 res->sdev = NULL;
3621 res->sata_port = NULL;
3622 }
3623 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3624 }
3625
3626 /**
3627 * ipr_slave_configure - Configure a SCSI device
3628 * @sdev: scsi device struct
3629 *
3630 * This function configures the specified scsi device.
3631 *
3632 * Return value:
3633 * 0 on success
3634 **/
3635 static int ipr_slave_configure(struct scsi_device *sdev)
3636 {
3637 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3638 struct ipr_resource_entry *res;
3639 unsigned long lock_flags = 0;
3640
3641 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3642 res = sdev->hostdata;
3643 if (res) {
3644 if (ipr_is_af_dasd_device(res))
3645 sdev->type = TYPE_RAID;
3646 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
3647 sdev->scsi_level = 4;
3648 sdev->no_uld_attach = 1;
3649 }
3650 if (ipr_is_vset_device(res)) {
3651 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3652 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3653 }
3654 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
3655 sdev->allow_restart = 1;
3656 if (ipr_is_gata(res) && res->sata_port) {
3657 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3658 ata_sas_slave_configure(sdev, res->sata_port->ap);
3659 } else {
3660 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3661 }
3662 }
3663 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3664 return 0;
3665 }
3666
3667 /**
3668 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3669 * @sdev: scsi device struct
3670 *
3671 * This function initializes an ATA port so that future commands
3672 * sent through queuecommand will work.
3673 *
3674 * Return value:
3675 * 0 on success
3676 **/
3677 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3678 {
3679 struct ipr_sata_port *sata_port = NULL;
3680 int rc = -ENXIO;
3681
3682 ENTER;
3683 if (sdev->sdev_target)
3684 sata_port = sdev->sdev_target->hostdata;
3685 if (sata_port)
3686 rc = ata_sas_port_init(sata_port->ap);
3687 if (rc)
3688 ipr_slave_destroy(sdev);
3689
3690 LEAVE;
3691 return rc;
3692 }
3693
3694 /**
3695 * ipr_slave_alloc - Prepare for commands to a device.
3696 * @sdev: scsi device struct
3697 *
3698 * This function saves a pointer to the resource entry
3699 * in the scsi device struct if the device exists. We
3700 * can then use this pointer in ipr_queuecommand when
3701 * handling new commands.
3702 *
3703 * Return value:
3704 * 0 on success / -ENXIO if device does not exist
3705 **/
3706 static int ipr_slave_alloc(struct scsi_device *sdev)
3707 {
3708 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3709 struct ipr_resource_entry *res;
3710 unsigned long lock_flags;
3711 int rc = -ENXIO;
3712
3713 sdev->hostdata = NULL;
3714
3715 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3716
3717 res = ipr_find_sdev(sdev);
3718 if (res) {
3719 res->sdev = sdev;
3720 res->add_to_ml = 0;
3721 res->in_erp = 0;
3722 sdev->hostdata = res;
3723 if (!ipr_is_naca_model(res))
3724 res->needs_sync_complete = 1;
3725 rc = 0;
3726 if (ipr_is_gata(res)) {
3727 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3728 return ipr_ata_slave_alloc(sdev);
3729 }
3730 }
3731
3732 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3733
3734 return rc;
3735 }
3736
3737 /**
3738 * ipr_eh_host_reset - Reset the host adapter
3739 * @scsi_cmd: scsi command struct
3740 *
3741 * Return value:
3742 * SUCCESS / FAILED
3743 **/
3744 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
3745 {
3746 struct ipr_ioa_cfg *ioa_cfg;
3747 int rc;
3748
3749 ENTER;
3750 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3751
3752 dev_err(&ioa_cfg->pdev->dev,
3753 "Adapter being reset as a result of error recovery.\n");
3754
3755 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3756 ioa_cfg->sdt_state = GET_DUMP;
3757
3758 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3759
3760 LEAVE;
3761 return rc;
3762 }
3763
3764 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3765 {
3766 int rc;
3767
3768 spin_lock_irq(cmd->device->host->host_lock);
3769 rc = __ipr_eh_host_reset(cmd);
3770 spin_unlock_irq(cmd->device->host->host_lock);
3771
3772 return rc;
3773 }
3774
3775 /**
3776 * ipr_device_reset - Reset the device
3777 * @ioa_cfg: ioa config struct
3778 * @res: resource entry struct
3779 *
3780 * This function issues a device reset to the affected device.
3781 * If the device is a SCSI device, a LUN reset will be sent
3782 * to the device first. If that does not work, a target reset
3783 * will be sent. If the device is a SATA device, a PHY reset will
3784 * be sent.
3785 *
3786 * Return value:
3787 * 0 on success / non-zero on failure
3788 **/
3789 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3790 struct ipr_resource_entry *res)
3791 {
3792 struct ipr_cmnd *ipr_cmd;
3793 struct ipr_ioarcb *ioarcb;
3794 struct ipr_cmd_pkt *cmd_pkt;
3795 struct ipr_ioarcb_ata_regs *regs;
3796 u32 ioasc;
3797
3798 ENTER;
3799 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3800 ioarcb = &ipr_cmd->ioarcb;
3801 cmd_pkt = &ioarcb->cmd_pkt;
3802 regs = &ioarcb->add_data.u.regs;
3803
3804 ioarcb->res_handle = res->cfgte.res_handle;
3805 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3806 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3807 if (ipr_is_gata(res)) {
3808 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3809 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3810 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3811 }
3812
3813 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3814 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3815 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3816 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3817 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3818 sizeof(struct ipr_ioasa_gata));
3819
3820 LEAVE;
3821 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3822 }
3823
3824 /**
3825 * ipr_sata_reset - Reset the SATA port
3826 * @ap: SATA port to reset
3827 * @classes: class of the attached device
3828 *
3829 * This function issues a SATA phy reset to the affected ATA port.
3830 *
3831 * Return value:
3832 * 0 on success / non-zero on failure
3833 **/
3834 static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes,
3835 unsigned long deadline)
3836 {
3837 struct ipr_sata_port *sata_port = ap->private_data;
3838 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3839 struct ipr_resource_entry *res;
3840 unsigned long lock_flags = 0;
3841 int rc = -ENXIO;
3842
3843 ENTER;
3844 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3845 while(ioa_cfg->in_reset_reload) {
3846 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3847 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3848 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3849 }
3850
3851 res = sata_port->res;
3852 if (res) {
3853 rc = ipr_device_reset(ioa_cfg, res);
3854 switch(res->cfgte.proto) {
3855 case IPR_PROTO_SATA:
3856 case IPR_PROTO_SAS_STP:
3857 *classes = ATA_DEV_ATA;
3858 break;
3859 case IPR_PROTO_SATA_ATAPI:
3860 case IPR_PROTO_SAS_STP_ATAPI:
3861 *classes = ATA_DEV_ATAPI;
3862 break;
3863 default:
3864 *classes = ATA_DEV_UNKNOWN;
3865 break;
3866 };
3867 }
3868
3869 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3870 LEAVE;
3871 return rc;
3872 }
3873
3874 /**
3875 * ipr_eh_dev_reset - Reset the device
3876 * @scsi_cmd: scsi command struct
3877 *
3878 * This function issues a device reset to the affected device.
3879 * A LUN reset will be sent to the device first. If that does
3880 * not work, a target reset will be sent.
3881 *
3882 * Return value:
3883 * SUCCESS / FAILED
3884 **/
3885 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
3886 {
3887 struct ipr_cmnd *ipr_cmd;
3888 struct ipr_ioa_cfg *ioa_cfg;
3889 struct ipr_resource_entry *res;
3890 struct ata_port *ap;
3891 int rc = 0;
3892
3893 ENTER;
3894 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3895 res = scsi_cmd->device->hostdata;
3896
3897 if (!res)
3898 return FAILED;
3899
3900 /*
3901 * If we are currently going through reset/reload, return failed. This will force the
3902 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3903 * reset to complete
3904 */
3905 if (ioa_cfg->in_reset_reload)
3906 return FAILED;
3907 if (ioa_cfg->ioa_is_dead)
3908 return FAILED;
3909
3910 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3911 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3912 if (ipr_cmd->scsi_cmd)
3913 ipr_cmd->done = ipr_scsi_eh_done;
3914 if (ipr_cmd->qc)
3915 ipr_cmd->done = ipr_sata_eh_done;
3916 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
3917 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
3918 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
3919 }
3920 }
3921 }
3922
3923 res->resetting_device = 1;
3924 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
3925
3926 if (ipr_is_gata(res) && res->sata_port) {
3927 ap = res->sata_port->ap;
3928 spin_unlock_irq(scsi_cmd->device->host->host_lock);
3929 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL);
3930 spin_lock_irq(scsi_cmd->device->host->host_lock);
3931
3932 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3933 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3934 rc = -EIO;
3935 break;
3936 }
3937 }
3938 } else
3939 rc = ipr_device_reset(ioa_cfg, res);
3940 res->resetting_device = 0;
3941
3942 LEAVE;
3943 return (rc ? FAILED : SUCCESS);
3944 }
3945
3946 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3947 {
3948 int rc;
3949
3950 spin_lock_irq(cmd->device->host->host_lock);
3951 rc = __ipr_eh_dev_reset(cmd);
3952 spin_unlock_irq(cmd->device->host->host_lock);
3953
3954 return rc;
3955 }
3956
3957 /**
3958 * ipr_bus_reset_done - Op done function for bus reset.
3959 * @ipr_cmd: ipr command struct
3960 *
3961 * This function is the op done function for a bus reset
3962 *
3963 * Return value:
3964 * none
3965 **/
3966 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3967 {
3968 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3969 struct ipr_resource_entry *res;
3970
3971 ENTER;
3972 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3973 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3974 sizeof(res->cfgte.res_handle))) {
3975 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3976 break;
3977 }
3978 }
3979
3980 /*
3981 * If abort has not completed, indicate the reset has, else call the
3982 * abort's done function to wake the sleeping eh thread
3983 */
3984 if (ipr_cmd->sibling->sibling)
3985 ipr_cmd->sibling->sibling = NULL;
3986 else
3987 ipr_cmd->sibling->done(ipr_cmd->sibling);
3988
3989 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3990 LEAVE;
3991 }
3992
3993 /**
3994 * ipr_abort_timeout - An abort task has timed out
3995 * @ipr_cmd: ipr command struct
3996 *
3997 * This function handles when an abort task times out. If this
3998 * happens we issue a bus reset since we have resources tied
3999 * up that must be freed before returning to the midlayer.
4000 *
4001 * Return value:
4002 * none
4003 **/
4004 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4005 {
4006 struct ipr_cmnd *reset_cmd;
4007 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4008 struct ipr_cmd_pkt *cmd_pkt;
4009 unsigned long lock_flags = 0;
4010
4011 ENTER;
4012 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4013 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4014 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4015 return;
4016 }
4017
4018 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
4019 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4020 ipr_cmd->sibling = reset_cmd;
4021 reset_cmd->sibling = ipr_cmd;
4022 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4023 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4024 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4025 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4026 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4027
4028 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4029 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4030 LEAVE;
4031 }
4032
4033 /**
4034 * ipr_cancel_op - Cancel specified op
4035 * @scsi_cmd: scsi command struct
4036 *
4037 * This function cancels specified op.
4038 *
4039 * Return value:
4040 * SUCCESS / FAILED
4041 **/
4042 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4043 {
4044 struct ipr_cmnd *ipr_cmd;
4045 struct ipr_ioa_cfg *ioa_cfg;
4046 struct ipr_resource_entry *res;
4047 struct ipr_cmd_pkt *cmd_pkt;
4048 u32 ioasc;
4049 int op_found = 0;
4050
4051 ENTER;
4052 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4053 res = scsi_cmd->device->hostdata;
4054
4055 /* If we are currently going through reset/reload, return failed.
4056 * This will force the mid-layer to call ipr_eh_host_reset,
4057 * which will then go to sleep and wait for the reset to complete
4058 */
4059 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4060 return FAILED;
4061 if (!res || !ipr_is_gscsi(res))
4062 return FAILED;
4063
4064 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4065 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4066 ipr_cmd->done = ipr_scsi_eh_done;
4067 op_found = 1;
4068 break;
4069 }
4070 }
4071
4072 if (!op_found)
4073 return SUCCESS;
4074
4075 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4076 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4077 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4078 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4079 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4080 ipr_cmd->u.sdev = scsi_cmd->device;
4081
4082 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4083 scsi_cmd->cmnd[0]);
4084 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4085 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4086
4087 /*
4088 * If the abort task timed out and we sent a bus reset, we will get
4089 * one the following responses to the abort
4090 */
4091 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4092 ioasc = 0;
4093 ipr_trace;
4094 }
4095
4096 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4097 if (!ipr_is_naca_model(res))
4098 res->needs_sync_complete = 1;
4099
4100 LEAVE;
4101 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4102 }
4103
4104 /**
4105 * ipr_eh_abort - Abort a single op
4106 * @scsi_cmd: scsi command struct
4107 *
4108 * Return value:
4109 * SUCCESS / FAILED
4110 **/
4111 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4112 {
4113 unsigned long flags;
4114 int rc;
4115
4116 ENTER;
4117
4118 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4119 rc = ipr_cancel_op(scsi_cmd);
4120 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4121
4122 LEAVE;
4123 return rc;
4124 }
4125
4126 /**
4127 * ipr_handle_other_interrupt - Handle "other" interrupts
4128 * @ioa_cfg: ioa config struct
4129 * @int_reg: interrupt register
4130 *
4131 * Return value:
4132 * IRQ_NONE / IRQ_HANDLED
4133 **/
4134 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4135 volatile u32 int_reg)
4136 {
4137 irqreturn_t rc = IRQ_HANDLED;
4138
4139 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4140 /* Mask the interrupt */
4141 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4142
4143 /* Clear the interrupt */
4144 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4145 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4146
4147 list_del(&ioa_cfg->reset_cmd->queue);
4148 del_timer(&ioa_cfg->reset_cmd->timer);
4149 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4150 } else {
4151 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4152 ioa_cfg->ioa_unit_checked = 1;
4153 else
4154 dev_err(&ioa_cfg->pdev->dev,
4155 "Permanent IOA failure. 0x%08X\n", int_reg);
4156
4157 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4158 ioa_cfg->sdt_state = GET_DUMP;
4159
4160 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4161 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4162 }
4163
4164 return rc;
4165 }
4166
4167 /**
4168 * ipr_isr - Interrupt service routine
4169 * @irq: irq number
4170 * @devp: pointer to ioa config struct
4171 *
4172 * Return value:
4173 * IRQ_NONE / IRQ_HANDLED
4174 **/
4175 static irqreturn_t ipr_isr(int irq, void *devp)
4176 {
4177 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4178 unsigned long lock_flags = 0;
4179 volatile u32 int_reg, int_mask_reg;
4180 u32 ioasc;
4181 u16 cmd_index;
4182 struct ipr_cmnd *ipr_cmd;
4183 irqreturn_t rc = IRQ_NONE;
4184
4185 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4186
4187 /* If interrupts are disabled, ignore the interrupt */
4188 if (!ioa_cfg->allow_interrupts) {
4189 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4190 return IRQ_NONE;
4191 }
4192
4193 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4194 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4195
4196 /* If an interrupt on the adapter did not occur, ignore it */
4197 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4198 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4199 return IRQ_NONE;
4200 }
4201
4202 while (1) {
4203 ipr_cmd = NULL;
4204
4205 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4206 ioa_cfg->toggle_bit) {
4207
4208 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4209 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4210
4211 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4212 ioa_cfg->errors_logged++;
4213 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
4214
4215 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4216 ioa_cfg->sdt_state = GET_DUMP;
4217
4218 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4219 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4220 return IRQ_HANDLED;
4221 }
4222
4223 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4224
4225 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4226
4227 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4228
4229 list_del(&ipr_cmd->queue);
4230 del_timer(&ipr_cmd->timer);
4231 ipr_cmd->done(ipr_cmd);
4232
4233 rc = IRQ_HANDLED;
4234
4235 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4236 ioa_cfg->hrrq_curr++;
4237 } else {
4238 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4239 ioa_cfg->toggle_bit ^= 1u;
4240 }
4241 }
4242
4243 if (ipr_cmd != NULL) {
4244 /* Clear the PCI interrupt */
4245 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
4246 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4247 } else
4248 break;
4249 }
4250
4251 if (unlikely(rc == IRQ_NONE))
4252 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4253
4254 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4255 return rc;
4256 }
4257
4258 /**
4259 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
4260 * @ioa_cfg: ioa config struct
4261 * @ipr_cmd: ipr command struct
4262 *
4263 * Return value:
4264 * 0 on success / -1 on failure
4265 **/
4266 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
4267 struct ipr_cmnd *ipr_cmd)
4268 {
4269 int i, nseg;
4270 struct scatterlist *sg;
4271 u32 length;
4272 u32 ioadl_flags = 0;
4273 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4274 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4275 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4276
4277 length = scsi_bufflen(scsi_cmd);
4278 if (!length)
4279 return 0;
4280
4281 nseg = scsi_dma_map(scsi_cmd);
4282 if (nseg < 0) {
4283 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4284 return -1;
4285 }
4286
4287 ipr_cmd->dma_use_sg = nseg;
4288
4289 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4290 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4291 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4292 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4293 ioarcb->write_ioadl_len =
4294 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4295 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4296 ioadl_flags = IPR_IOADL_FLAGS_READ;
4297 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4298 ioarcb->read_ioadl_len =
4299 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4300 }
4301
4302 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) {
4303 ioadl = ioarcb->add_data.u.ioadl;
4304 ioarcb->write_ioadl_addr =
4305 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4306 offsetof(struct ipr_ioarcb, add_data));
4307 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4308 }
4309
4310 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
4311 ioadl[i].flags_and_data_len =
4312 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
4313 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
4314 }
4315
4316 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4317 return 0;
4318 }
4319
4320 /**
4321 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4322 * @scsi_cmd: scsi command struct
4323 *
4324 * Return value:
4325 * task attributes
4326 **/
4327 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4328 {
4329 u8 tag[2];
4330 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4331
4332 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4333 switch (tag[0]) {
4334 case MSG_SIMPLE_TAG:
4335 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4336 break;
4337 case MSG_HEAD_TAG:
4338 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4339 break;
4340 case MSG_ORDERED_TAG:
4341 rc = IPR_FLAGS_LO_ORDERED_TASK;
4342 break;
4343 };
4344 }
4345
4346 return rc;
4347 }
4348
4349 /**
4350 * ipr_erp_done - Process completion of ERP for a device
4351 * @ipr_cmd: ipr command struct
4352 *
4353 * This function copies the sense buffer into the scsi_cmd
4354 * struct and pushes the scsi_done function.
4355 *
4356 * Return value:
4357 * nothing
4358 **/
4359 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4360 {
4361 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4362 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4363 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4364 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4365
4366 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4367 scsi_cmd->result |= (DID_ERROR << 16);
4368 scmd_printk(KERN_ERR, scsi_cmd,
4369 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
4370 } else {
4371 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4372 SCSI_SENSE_BUFFERSIZE);
4373 }
4374
4375 if (res) {
4376 if (!ipr_is_naca_model(res))
4377 res->needs_sync_complete = 1;
4378 res->in_erp = 0;
4379 }
4380 scsi_dma_unmap(ipr_cmd->scsi_cmd);
4381 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4382 scsi_cmd->scsi_done(scsi_cmd);
4383 }
4384
4385 /**
4386 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4387 * @ipr_cmd: ipr command struct
4388 *
4389 * Return value:
4390 * none
4391 **/
4392 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4393 {
4394 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4395 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4396 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
4397
4398 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4399 ioarcb->write_data_transfer_length = 0;
4400 ioarcb->read_data_transfer_length = 0;
4401 ioarcb->write_ioadl_len = 0;
4402 ioarcb->read_ioadl_len = 0;
4403 ioasa->ioasc = 0;
4404 ioasa->residual_data_len = 0;
4405 ioarcb->write_ioadl_addr =
4406 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
4407 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4408 }
4409
4410 /**
4411 * ipr_erp_request_sense - Send request sense to a device
4412 * @ipr_cmd: ipr command struct
4413 *
4414 * This function sends a request sense to a device as a result
4415 * of a check condition.
4416 *
4417 * Return value:
4418 * nothing
4419 **/
4420 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4421 {
4422 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4423 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4424
4425 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4426 ipr_erp_done(ipr_cmd);
4427 return;
4428 }
4429
4430 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4431
4432 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4433 cmd_pkt->cdb[0] = REQUEST_SENSE;
4434 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4435 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4436 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4437 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4438
4439 ipr_cmd->ioadl[0].flags_and_data_len =
4440 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4441 ipr_cmd->ioadl[0].address =
4442 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4443
4444 ipr_cmd->ioarcb.read_ioadl_len =
4445 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4446 ipr_cmd->ioarcb.read_data_transfer_length =
4447 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4448
4449 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4450 IPR_REQUEST_SENSE_TIMEOUT * 2);
4451 }
4452
4453 /**
4454 * ipr_erp_cancel_all - Send cancel all to a device
4455 * @ipr_cmd: ipr command struct
4456 *
4457 * This function sends a cancel all to a device to clear the
4458 * queue. If we are running TCQ on the device, QERR is set to 1,
4459 * which means all outstanding ops have been dropped on the floor.
4460 * Cancel all will return them to us.
4461 *
4462 * Return value:
4463 * nothing
4464 **/
4465 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4466 {
4467 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4468 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4469 struct ipr_cmd_pkt *cmd_pkt;
4470
4471 res->in_erp = 1;
4472
4473 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4474
4475 if (!scsi_get_tag_type(scsi_cmd->device)) {
4476 ipr_erp_request_sense(ipr_cmd);
4477 return;
4478 }
4479
4480 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4481 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4482 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4483
4484 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4485 IPR_CANCEL_ALL_TIMEOUT);
4486 }
4487
4488 /**
4489 * ipr_dump_ioasa - Dump contents of IOASA
4490 * @ioa_cfg: ioa config struct
4491 * @ipr_cmd: ipr command struct
4492 * @res: resource entry struct
4493 *
4494 * This function is invoked by the interrupt handler when ops
4495 * fail. It will log the IOASA if appropriate. Only called
4496 * for GPDD ops.
4497 *
4498 * Return value:
4499 * none
4500 **/
4501 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
4502 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
4503 {
4504 int i;
4505 u16 data_len;
4506 u32 ioasc, fd_ioasc;
4507 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4508 __be32 *ioasa_data = (__be32 *)ioasa;
4509 int error_index;
4510
4511 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
4512 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK;
4513
4514 if (0 == ioasc)
4515 return;
4516
4517 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4518 return;
4519
4520 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
4521 error_index = ipr_get_error(fd_ioasc);
4522 else
4523 error_index = ipr_get_error(ioasc);
4524
4525 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4526 /* Don't log an error if the IOA already logged one */
4527 if (ioasa->ilid != 0)
4528 return;
4529
4530 if (!ipr_is_gscsi(res))
4531 return;
4532
4533 if (ipr_error_table[error_index].log_ioasa == 0)
4534 return;
4535 }
4536
4537 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
4538
4539 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4540 data_len = sizeof(struct ipr_ioasa);
4541 else
4542 data_len = be16_to_cpu(ioasa->ret_stat_len);
4543
4544 ipr_err("IOASA Dump:\n");
4545
4546 for (i = 0; i < data_len / 4; i += 4) {
4547 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4548 be32_to_cpu(ioasa_data[i]),
4549 be32_to_cpu(ioasa_data[i+1]),
4550 be32_to_cpu(ioasa_data[i+2]),
4551 be32_to_cpu(ioasa_data[i+3]));
4552 }
4553 }
4554
4555 /**
4556 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4557 * @ioasa: IOASA
4558 * @sense_buf: sense data buffer
4559 *
4560 * Return value:
4561 * none
4562 **/
4563 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4564 {
4565 u32 failing_lba;
4566 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4567 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4568 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4569 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4570
4571 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4572
4573 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4574 return;
4575
4576 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4577
4578 if (ipr_is_vset_device(res) &&
4579 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4580 ioasa->u.vset.failing_lba_hi != 0) {
4581 sense_buf[0] = 0x72;
4582 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4583 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4584 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4585
4586 sense_buf[7] = 12;
4587 sense_buf[8] = 0;
4588 sense_buf[9] = 0x0A;
4589 sense_buf[10] = 0x80;
4590
4591 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4592
4593 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4594 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4595 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4596 sense_buf[15] = failing_lba & 0x000000ff;
4597
4598 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4599
4600 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4601 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4602 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4603 sense_buf[19] = failing_lba & 0x000000ff;
4604 } else {
4605 sense_buf[0] = 0x70;
4606 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4607 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4608 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4609
4610 /* Illegal request */
4611 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4612 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4613 sense_buf[7] = 10; /* additional length */
4614
4615 /* IOARCB was in error */
4616 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4617 sense_buf[15] = 0xC0;
4618 else /* Parameter data was invalid */
4619 sense_buf[15] = 0x80;
4620
4621 sense_buf[16] =
4622 ((IPR_FIELD_POINTER_MASK &
4623 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4624 sense_buf[17] =
4625 (IPR_FIELD_POINTER_MASK &
4626 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4627 } else {
4628 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4629 if (ipr_is_vset_device(res))
4630 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4631 else
4632 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4633
4634 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4635 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4636 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4637 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4638 sense_buf[6] = failing_lba & 0x000000ff;
4639 }
4640
4641 sense_buf[7] = 6; /* additional length */
4642 }
4643 }
4644 }
4645
4646 /**
4647 * ipr_get_autosense - Copy autosense data to sense buffer
4648 * @ipr_cmd: ipr command struct
4649 *
4650 * This function copies the autosense buffer to the buffer
4651 * in the scsi_cmd, if there is autosense available.
4652 *
4653 * Return value:
4654 * 1 if autosense was available / 0 if not
4655 **/
4656 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4657 {
4658 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4659
4660 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
4661 return 0;
4662
4663 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4664 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4665 SCSI_SENSE_BUFFERSIZE));
4666 return 1;
4667 }
4668
4669 /**
4670 * ipr_erp_start - Process an error response for a SCSI op
4671 * @ioa_cfg: ioa config struct
4672 * @ipr_cmd: ipr command struct
4673 *
4674 * This function determines whether or not to initiate ERP
4675 * on the affected device.
4676 *
4677 * Return value:
4678 * nothing
4679 **/
4680 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4681 struct ipr_cmnd *ipr_cmd)
4682 {
4683 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4684 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4685 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4686 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
4687
4688 if (!res) {
4689 ipr_scsi_eh_done(ipr_cmd);
4690 return;
4691 }
4692
4693 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
4694 ipr_gen_sense(ipr_cmd);
4695
4696 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4697
4698 switch (masked_ioasc) {
4699 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
4700 if (ipr_is_naca_model(res))
4701 scsi_cmd->result |= (DID_ABORT << 16);
4702 else
4703 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4704 break;
4705 case IPR_IOASC_IR_RESOURCE_HANDLE:
4706 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
4707 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4708 break;
4709 case IPR_IOASC_HW_SEL_TIMEOUT:
4710 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4711 if (!ipr_is_naca_model(res))
4712 res->needs_sync_complete = 1;
4713 break;
4714 case IPR_IOASC_SYNC_REQUIRED:
4715 if (!res->in_erp)
4716 res->needs_sync_complete = 1;
4717 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4718 break;
4719 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
4720 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
4721 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4722 break;
4723 case IPR_IOASC_BUS_WAS_RESET:
4724 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4725 /*
4726 * Report the bus reset and ask for a retry. The device
4727 * will give CC/UA the next command.
4728 */
4729 if (!res->resetting_device)
4730 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4731 scsi_cmd->result |= (DID_ERROR << 16);
4732 if (!ipr_is_naca_model(res))
4733 res->needs_sync_complete = 1;
4734 break;
4735 case IPR_IOASC_HW_DEV_BUS_STATUS:
4736 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4737 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
4738 if (!ipr_get_autosense(ipr_cmd)) {
4739 if (!ipr_is_naca_model(res)) {
4740 ipr_erp_cancel_all(ipr_cmd);
4741 return;
4742 }
4743 }
4744 }
4745 if (!ipr_is_naca_model(res))
4746 res->needs_sync_complete = 1;
4747 break;
4748 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4749 break;
4750 default:
4751 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4752 scsi_cmd->result |= (DID_ERROR << 16);
4753 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
4754 res->needs_sync_complete = 1;
4755 break;
4756 }
4757
4758 scsi_dma_unmap(ipr_cmd->scsi_cmd);
4759 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4760 scsi_cmd->scsi_done(scsi_cmd);
4761 }
4762
4763 /**
4764 * ipr_scsi_done - mid-layer done function
4765 * @ipr_cmd: ipr command struct
4766 *
4767 * This function is invoked by the interrupt handler for
4768 * ops generated by the SCSI mid-layer
4769 *
4770 * Return value:
4771 * none
4772 **/
4773 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4774 {
4775 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4776 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4777 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4778
4779 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->ioasa.residual_data_len));
4780
4781 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
4782 scsi_dma_unmap(ipr_cmd->scsi_cmd);
4783 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4784 scsi_cmd->scsi_done(scsi_cmd);
4785 } else
4786 ipr_erp_start(ioa_cfg, ipr_cmd);
4787 }
4788
4789 /**
4790 * ipr_queuecommand - Queue a mid-layer request
4791 * @scsi_cmd: scsi command struct
4792 * @done: done function
4793 *
4794 * This function queues a request generated by the mid-layer.
4795 *
4796 * Return value:
4797 * 0 on success
4798 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4799 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4800 **/
4801 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4802 void (*done) (struct scsi_cmnd *))
4803 {
4804 struct ipr_ioa_cfg *ioa_cfg;
4805 struct ipr_resource_entry *res;
4806 struct ipr_ioarcb *ioarcb;
4807 struct ipr_cmnd *ipr_cmd;
4808 int rc = 0;
4809
4810 scsi_cmd->scsi_done = done;
4811 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4812 res = scsi_cmd->device->hostdata;
4813 scsi_cmd->result = (DID_OK << 16);
4814
4815 /*
4816 * We are currently blocking all devices due to a host reset
4817 * We have told the host to stop giving us new requests, but
4818 * ERP ops don't count. FIXME
4819 */
4820 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4821 return SCSI_MLQUEUE_HOST_BUSY;
4822
4823 /*
4824 * FIXME - Create scsi_set_host_offline interface
4825 * and the ioa_is_dead check can be removed
4826 */
4827 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4828 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4829 scsi_cmd->result = (DID_NO_CONNECT << 16);
4830 scsi_cmd->scsi_done(scsi_cmd);
4831 return 0;
4832 }
4833
4834 if (ipr_is_gata(res) && res->sata_port)
4835 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4836
4837 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4838 ioarcb = &ipr_cmd->ioarcb;
4839 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4840
4841 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4842 ipr_cmd->scsi_cmd = scsi_cmd;
4843 ioarcb->res_handle = res->cfgte.res_handle;
4844 ipr_cmd->done = ipr_scsi_done;
4845 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4846
4847 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4848 if (scsi_cmd->underflow == 0)
4849 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4850
4851 if (res->needs_sync_complete) {
4852 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4853 res->needs_sync_complete = 0;
4854 }
4855
4856 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4857 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4858 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4859 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4860 }
4861
4862 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4863 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4864 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4865
4866 if (likely(rc == 0))
4867 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4868
4869 if (likely(rc == 0)) {
4870 mb();
4871 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4872 ioa_cfg->regs.ioarrin_reg);
4873 } else {
4874 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4875 return SCSI_MLQUEUE_HOST_BUSY;
4876 }
4877
4878 return 0;
4879 }
4880
4881 /**
4882 * ipr_ioctl - IOCTL handler
4883 * @sdev: scsi device struct
4884 * @cmd: IOCTL cmd
4885 * @arg: IOCTL arg
4886 *
4887 * Return value:
4888 * 0 on success / other on failure
4889 **/
4890 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
4891 {
4892 struct ipr_resource_entry *res;
4893
4894 res = (struct ipr_resource_entry *)sdev->hostdata;
4895 if (res && ipr_is_gata(res))
4896 return ata_scsi_ioctl(sdev, cmd, arg);
4897
4898 return -EINVAL;
4899 }
4900
4901 /**
4902 * ipr_info - Get information about the card/driver
4903 * @scsi_host: scsi host struct
4904 *
4905 * Return value:
4906 * pointer to buffer with description string
4907 **/
4908 static const char * ipr_ioa_info(struct Scsi_Host *host)
4909 {
4910 static char buffer[512];
4911 struct ipr_ioa_cfg *ioa_cfg;
4912 unsigned long lock_flags = 0;
4913
4914 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4915
4916 spin_lock_irqsave(host->host_lock, lock_flags);
4917 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4918 spin_unlock_irqrestore(host->host_lock, lock_flags);
4919
4920 return buffer;
4921 }
4922
4923 static struct scsi_host_template driver_template = {
4924 .module = THIS_MODULE,
4925 .name = "IPR",
4926 .info = ipr_ioa_info,
4927 .ioctl = ipr_ioctl,
4928 .queuecommand = ipr_queuecommand,
4929 .eh_abort_handler = ipr_eh_abort,
4930 .eh_device_reset_handler = ipr_eh_dev_reset,
4931 .eh_host_reset_handler = ipr_eh_host_reset,
4932 .slave_alloc = ipr_slave_alloc,
4933 .slave_configure = ipr_slave_configure,
4934 .slave_destroy = ipr_slave_destroy,
4935 .target_alloc = ipr_target_alloc,
4936 .target_destroy = ipr_target_destroy,
4937 .change_queue_depth = ipr_change_queue_depth,
4938 .change_queue_type = ipr_change_queue_type,
4939 .bios_param = ipr_biosparam,
4940 .can_queue = IPR_MAX_COMMANDS,
4941 .this_id = -1,
4942 .sg_tablesize = IPR_MAX_SGLIST,
4943 .max_sectors = IPR_IOA_MAX_SECTORS,
4944 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4945 .use_clustering = ENABLE_CLUSTERING,
4946 .shost_attrs = ipr_ioa_attrs,
4947 .sdev_attrs = ipr_dev_attrs,
4948 .proc_name = IPR_NAME
4949 };
4950
4951 /**
4952 * ipr_ata_phy_reset - libata phy_reset handler
4953 * @ap: ata port to reset
4954 *
4955 **/
4956 static void ipr_ata_phy_reset(struct ata_port *ap)
4957 {
4958 unsigned long flags;
4959 struct ipr_sata_port *sata_port = ap->private_data;
4960 struct ipr_resource_entry *res = sata_port->res;
4961 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4962 int rc;
4963
4964 ENTER;
4965 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4966 while(ioa_cfg->in_reset_reload) {
4967 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4968 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4969 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4970 }
4971
4972 if (!ioa_cfg->allow_cmds)
4973 goto out_unlock;
4974
4975 rc = ipr_device_reset(ioa_cfg, res);
4976
4977 if (rc) {
4978 ap->ops->port_disable(ap);
4979 goto out_unlock;
4980 }
4981
4982 switch(res->cfgte.proto) {
4983 case IPR_PROTO_SATA:
4984 case IPR_PROTO_SAS_STP:
4985 ap->device[0].class = ATA_DEV_ATA;
4986 break;
4987 case IPR_PROTO_SATA_ATAPI:
4988 case IPR_PROTO_SAS_STP_ATAPI:
4989 ap->device[0].class = ATA_DEV_ATAPI;
4990 break;
4991 default:
4992 ap->device[0].class = ATA_DEV_UNKNOWN;
4993 ap->ops->port_disable(ap);
4994 break;
4995 };
4996
4997 out_unlock:
4998 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4999 LEAVE;
5000 }
5001
5002 /**
5003 * ipr_ata_post_internal - Cleanup after an internal command
5004 * @qc: ATA queued command
5005 *
5006 * Return value:
5007 * none
5008 **/
5009 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5010 {
5011 struct ipr_sata_port *sata_port = qc->ap->private_data;
5012 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5013 struct ipr_cmnd *ipr_cmd;
5014 unsigned long flags;
5015
5016 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5017 while(ioa_cfg->in_reset_reload) {
5018 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5019 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5020 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5021 }
5022
5023 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5024 if (ipr_cmd->qc == qc) {
5025 ipr_device_reset(ioa_cfg, sata_port->res);
5026 break;
5027 }
5028 }
5029 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5030 }
5031
5032 /**
5033 * ipr_tf_read - Read the current ATA taskfile for the ATA port
5034 * @ap: ATA port
5035 * @tf: destination ATA taskfile
5036 *
5037 * Return value:
5038 * none
5039 **/
5040 static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
5041 {
5042 struct ipr_sata_port *sata_port = ap->private_data;
5043 struct ipr_ioasa_gata *g = &sata_port->ioasa;
5044
5045 tf->feature = g->error;
5046 tf->nsect = g->nsect;
5047 tf->lbal = g->lbal;
5048 tf->lbam = g->lbam;
5049 tf->lbah = g->lbah;
5050 tf->device = g->device;
5051 tf->command = g->status;
5052 tf->hob_nsect = g->hob_nsect;
5053 tf->hob_lbal = g->hob_lbal;
5054 tf->hob_lbam = g->hob_lbam;
5055 tf->hob_lbah = g->hob_lbah;
5056 tf->ctl = g->alt_status;
5057 }
5058
5059 /**
5060 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5061 * @regs: destination
5062 * @tf: source ATA taskfile
5063 *
5064 * Return value:
5065 * none
5066 **/
5067 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5068 struct ata_taskfile *tf)
5069 {
5070 regs->feature = tf->feature;
5071 regs->nsect = tf->nsect;
5072 regs->lbal = tf->lbal;
5073 regs->lbam = tf->lbam;
5074 regs->lbah = tf->lbah;
5075 regs->device = tf->device;
5076 regs->command = tf->command;
5077 regs->hob_feature = tf->hob_feature;
5078 regs->hob_nsect = tf->hob_nsect;
5079 regs->hob_lbal = tf->hob_lbal;
5080 regs->hob_lbam = tf->hob_lbam;
5081 regs->hob_lbah = tf->hob_lbah;
5082 regs->ctl = tf->ctl;
5083 }
5084
5085 /**
5086 * ipr_sata_done - done function for SATA commands
5087 * @ipr_cmd: ipr command struct
5088 *
5089 * This function is invoked by the interrupt handler for
5090 * ops generated by the SCSI mid-layer to SATA devices
5091 *
5092 * Return value:
5093 * none
5094 **/
5095 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5096 {
5097 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5098 struct ata_queued_cmd *qc = ipr_cmd->qc;
5099 struct ipr_sata_port *sata_port = qc->ap->private_data;
5100 struct ipr_resource_entry *res = sata_port->res;
5101 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5102
5103 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5104 sizeof(struct ipr_ioasa_gata));
5105 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5106
5107 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5108 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
5109 res->cfgte.res_addr.target);
5110
5111 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5112 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5113 else
5114 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5115 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5116 ata_qc_complete(qc);
5117 }
5118
5119 /**
5120 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5121 * @ipr_cmd: ipr command struct
5122 * @qc: ATA queued command
5123 *
5124 **/
5125 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5126 struct ata_queued_cmd *qc)
5127 {
5128 u32 ioadl_flags = 0;
5129 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5130 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5131 int len = qc->nbytes + qc->pad_len;
5132 struct scatterlist *sg;
5133
5134 if (len == 0)
5135 return;
5136
5137 if (qc->dma_dir == DMA_TO_DEVICE) {
5138 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5139 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5140 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5141 ioarcb->write_ioadl_len =
5142 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5143 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5144 ioadl_flags = IPR_IOADL_FLAGS_READ;
5145 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5146 ioarcb->read_ioadl_len =
5147 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5148 }
5149
5150 ata_for_each_sg(sg, qc) {
5151 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5152 ioadl->address = cpu_to_be32(sg_dma_address(sg));
5153 if (ata_sg_is_last(sg, qc))
5154 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5155 else
5156 ioadl++;
5157 }
5158 }
5159
5160 /**
5161 * ipr_qc_issue - Issue a SATA qc to a device
5162 * @qc: queued command
5163 *
5164 * Return value:
5165 * 0 if success
5166 **/
5167 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5168 {
5169 struct ata_port *ap = qc->ap;
5170 struct ipr_sata_port *sata_port = ap->private_data;
5171 struct ipr_resource_entry *res = sata_port->res;
5172 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5173 struct ipr_cmnd *ipr_cmd;
5174 struct ipr_ioarcb *ioarcb;
5175 struct ipr_ioarcb_ata_regs *regs;
5176
5177 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
5178 return AC_ERR_SYSTEM;
5179
5180 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5181 ioarcb = &ipr_cmd->ioarcb;
5182 regs = &ioarcb->add_data.u.regs;
5183
5184 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5185 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5186
5187 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5188 ipr_cmd->qc = qc;
5189 ipr_cmd->done = ipr_sata_done;
5190 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5191 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5192 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5193 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5194 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
5195
5196 ipr_build_ata_ioadl(ipr_cmd, qc);
5197 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5198 ipr_copy_sata_tf(regs, &qc->tf);
5199 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5200 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5201
5202 switch (qc->tf.protocol) {
5203 case ATA_PROT_NODATA:
5204 case ATA_PROT_PIO:
5205 break;
5206
5207 case ATA_PROT_DMA:
5208 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5209 break;
5210
5211 case ATA_PROT_ATAPI:
5212 case ATA_PROT_ATAPI_NODATA:
5213 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5214 break;
5215
5216 case ATA_PROT_ATAPI_DMA:
5217 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5218 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5219 break;
5220
5221 default:
5222 WARN_ON(1);
5223 return AC_ERR_INVALID;
5224 }
5225
5226 mb();
5227 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5228 ioa_cfg->regs.ioarrin_reg);
5229 return 0;
5230 }
5231
5232 /**
5233 * ipr_ata_check_status - Return last ATA status
5234 * @ap: ATA port
5235 *
5236 * Return value:
5237 * ATA status
5238 **/
5239 static u8 ipr_ata_check_status(struct ata_port *ap)
5240 {
5241 struct ipr_sata_port *sata_port = ap->private_data;
5242 return sata_port->ioasa.status;
5243 }
5244
5245 /**
5246 * ipr_ata_check_altstatus - Return last ATA altstatus
5247 * @ap: ATA port
5248 *
5249 * Return value:
5250 * Alt ATA status
5251 **/
5252 static u8 ipr_ata_check_altstatus(struct ata_port *ap)
5253 {
5254 struct ipr_sata_port *sata_port = ap->private_data;
5255 return sata_port->ioasa.alt_status;
5256 }
5257
5258 static struct ata_port_operations ipr_sata_ops = {
5259 .port_disable = ata_port_disable,
5260 .check_status = ipr_ata_check_status,
5261 .check_altstatus = ipr_ata_check_altstatus,
5262 .dev_select = ata_noop_dev_select,
5263 .phy_reset = ipr_ata_phy_reset,
5264 .post_internal_cmd = ipr_ata_post_internal,
5265 .tf_read = ipr_tf_read,
5266 .qc_prep = ata_noop_qc_prep,
5267 .qc_issue = ipr_qc_issue,
5268 .port_start = ata_sas_port_start,
5269 .port_stop = ata_sas_port_stop
5270 };
5271
5272 static struct ata_port_info sata_port_info = {
5273 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5274 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5275 .pio_mask = 0x10, /* pio4 */
5276 .mwdma_mask = 0x07,
5277 .udma_mask = 0x7f, /* udma0-6 */
5278 .port_ops = &ipr_sata_ops
5279 };
5280
5281 #ifdef CONFIG_PPC_PSERIES
5282 static const u16 ipr_blocked_processors[] = {
5283 PV_NORTHSTAR,
5284 PV_PULSAR,
5285 PV_POWER4,
5286 PV_ICESTAR,
5287 PV_SSTAR,
5288 PV_POWER4p,
5289 PV_630,
5290 PV_630p
5291 };
5292
5293 /**
5294 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5295 * @ioa_cfg: ioa cfg struct
5296 *
5297 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5298 * certain pSeries hardware. This function determines if the given
5299 * adapter is in one of these confgurations or not.
5300 *
5301 * Return value:
5302 * 1 if adapter is not supported / 0 if adapter is supported
5303 **/
5304 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5305 {
5306 u8 rev_id;
5307 int i;
5308
5309 if (ioa_cfg->type == 0x5702) {
5310 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
5311 &rev_id) == PCIBIOS_SUCCESSFUL) {
5312 if (rev_id < 4) {
5313 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5314 if (__is_processor(ipr_blocked_processors[i]))
5315 return 1;
5316 }
5317 }
5318 }
5319 }
5320 return 0;
5321 }
5322 #else
5323 #define ipr_invalid_adapter(ioa_cfg) 0
5324 #endif
5325
5326 /**
5327 * ipr_ioa_bringdown_done - IOA bring down completion.
5328 * @ipr_cmd: ipr command struct
5329 *
5330 * This function processes the completion of an adapter bring down.
5331 * It wakes any reset sleepers.
5332 *
5333 * Return value:
5334 * IPR_RC_JOB_RETURN
5335 **/
5336 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5337 {
5338 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5339
5340 ENTER;
5341 ioa_cfg->in_reset_reload = 0;
5342 ioa_cfg->reset_retries = 0;
5343 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5344 wake_up_all(&ioa_cfg->reset_wait_q);
5345
5346 spin_unlock_irq(ioa_cfg->host->host_lock);
5347 scsi_unblock_requests(ioa_cfg->host);
5348 spin_lock_irq(ioa_cfg->host->host_lock);
5349 LEAVE;
5350
5351 return IPR_RC_JOB_RETURN;
5352 }
5353
5354 /**
5355 * ipr_ioa_reset_done - IOA reset completion.
5356 * @ipr_cmd: ipr command struct
5357 *
5358 * This function processes the completion of an adapter reset.
5359 * It schedules any necessary mid-layer add/removes and
5360 * wakes any reset sleepers.
5361 *
5362 * Return value:
5363 * IPR_RC_JOB_RETURN
5364 **/
5365 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5366 {
5367 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5368 struct ipr_resource_entry *res;
5369 struct ipr_hostrcb *hostrcb, *temp;
5370 int i = 0;
5371
5372 ENTER;
5373 ioa_cfg->in_reset_reload = 0;
5374 ioa_cfg->allow_cmds = 1;
5375 ioa_cfg->reset_cmd = NULL;
5376 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
5377
5378 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5379 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5380 ipr_trace;
5381 break;
5382 }
5383 }
5384 schedule_work(&ioa_cfg->work_q);
5385
5386 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5387 list_del(&hostrcb->queue);
5388 if (i++ < IPR_NUM_LOG_HCAMS)
5389 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5390 else
5391 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5392 }
5393
5394 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
5395 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5396
5397 ioa_cfg->reset_retries = 0;
5398 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5399 wake_up_all(&ioa_cfg->reset_wait_q);
5400
5401 spin_unlock_irq(ioa_cfg->host->host_lock);
5402 scsi_unblock_requests(ioa_cfg->host);
5403 spin_lock_irq(ioa_cfg->host->host_lock);
5404
5405 if (!ioa_cfg->allow_cmds)
5406 scsi_block_requests(ioa_cfg->host);
5407
5408 LEAVE;
5409 return IPR_RC_JOB_RETURN;
5410 }
5411
5412 /**
5413 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5414 * @supported_dev: supported device struct
5415 * @vpids: vendor product id struct
5416 *
5417 * Return value:
5418 * none
5419 **/
5420 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5421 struct ipr_std_inq_vpids *vpids)
5422 {
5423 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5424 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5425 supported_dev->num_records = 1;
5426 supported_dev->data_length =
5427 cpu_to_be16(sizeof(struct ipr_supported_device));
5428 supported_dev->reserved = 0;
5429 }
5430
5431 /**
5432 * ipr_set_supported_devs - Send Set Supported Devices for a device
5433 * @ipr_cmd: ipr command struct
5434 *
5435 * This function send a Set Supported Devices to the adapter
5436 *
5437 * Return value:
5438 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5439 **/
5440 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5441 {
5442 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5443 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5444 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5445 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5446 struct ipr_resource_entry *res = ipr_cmd->u.res;
5447
5448 ipr_cmd->job_step = ipr_ioa_reset_done;
5449
5450 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
5451 if (!ipr_is_scsi_disk(res))
5452 continue;
5453
5454 ipr_cmd->u.res = res;
5455 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5456
5457 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5458 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5459 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5460
5461 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5462 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5463 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5464
5465 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5466 sizeof(struct ipr_supported_device));
5467 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5468 offsetof(struct ipr_misc_cbs, supp_dev));
5469 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5470 ioarcb->write_data_transfer_length =
5471 cpu_to_be32(sizeof(struct ipr_supported_device));
5472
5473 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5474 IPR_SET_SUP_DEVICE_TIMEOUT);
5475
5476 ipr_cmd->job_step = ipr_set_supported_devs;
5477 return IPR_RC_JOB_RETURN;
5478 }
5479
5480 return IPR_RC_JOB_CONTINUE;
5481 }
5482
5483 /**
5484 * ipr_setup_write_cache - Disable write cache if needed
5485 * @ipr_cmd: ipr command struct
5486 *
5487 * This function sets up adapters write cache to desired setting
5488 *
5489 * Return value:
5490 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5491 **/
5492 static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5493 {
5494 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5495
5496 ipr_cmd->job_step = ipr_set_supported_devs;
5497 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5498 struct ipr_resource_entry, queue);
5499
5500 if (ioa_cfg->cache_state != CACHE_DISABLED)
5501 return IPR_RC_JOB_CONTINUE;
5502
5503 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5504 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5505 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5506 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5507
5508 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5509
5510 return IPR_RC_JOB_RETURN;
5511 }
5512
5513 /**
5514 * ipr_get_mode_page - Locate specified mode page
5515 * @mode_pages: mode page buffer
5516 * @page_code: page code to find
5517 * @len: minimum required length for mode page
5518 *
5519 * Return value:
5520 * pointer to mode page / NULL on failure
5521 **/
5522 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5523 u32 page_code, u32 len)
5524 {
5525 struct ipr_mode_page_hdr *mode_hdr;
5526 u32 page_length;
5527 u32 length;
5528
5529 if (!mode_pages || (mode_pages->hdr.length == 0))
5530 return NULL;
5531
5532 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5533 mode_hdr = (struct ipr_mode_page_hdr *)
5534 (mode_pages->data + mode_pages->hdr.block_desc_len);
5535
5536 while (length) {
5537 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5538 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5539 return mode_hdr;
5540 break;
5541 } else {
5542 page_length = (sizeof(struct ipr_mode_page_hdr) +
5543 mode_hdr->page_length);
5544 length -= page_length;
5545 mode_hdr = (struct ipr_mode_page_hdr *)
5546 ((unsigned long)mode_hdr + page_length);
5547 }
5548 }
5549 return NULL;
5550 }
5551
5552 /**
5553 * ipr_check_term_power - Check for term power errors
5554 * @ioa_cfg: ioa config struct
5555 * @mode_pages: IOAFP mode pages buffer
5556 *
5557 * Check the IOAFP's mode page 28 for term power errors
5558 *
5559 * Return value:
5560 * nothing
5561 **/
5562 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5563 struct ipr_mode_pages *mode_pages)
5564 {
5565 int i;
5566 int entry_length;
5567 struct ipr_dev_bus_entry *bus;
5568 struct ipr_mode_page28 *mode_page;
5569
5570 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5571 sizeof(struct ipr_mode_page28));
5572
5573 entry_length = mode_page->entry_length;
5574
5575 bus = mode_page->bus;
5576
5577 for (i = 0; i < mode_page->num_entries; i++) {
5578 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5579 dev_err(&ioa_cfg->pdev->dev,
5580 "Term power is absent on scsi bus %d\n",
5581 bus->res_addr.bus);
5582 }
5583
5584 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5585 }
5586 }
5587
5588 /**
5589 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5590 * @ioa_cfg: ioa config struct
5591 *
5592 * Looks through the config table checking for SES devices. If
5593 * the SES device is in the SES table indicating a maximum SCSI
5594 * bus speed, the speed is limited for the bus.
5595 *
5596 * Return value:
5597 * none
5598 **/
5599 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5600 {
5601 u32 max_xfer_rate;
5602 int i;
5603
5604 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5605 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5606 ioa_cfg->bus_attr[i].bus_width);
5607
5608 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5609 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5610 }
5611 }
5612
5613 /**
5614 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5615 * @ioa_cfg: ioa config struct
5616 * @mode_pages: mode page 28 buffer
5617 *
5618 * Updates mode page 28 based on driver configuration
5619 *
5620 * Return value:
5621 * none
5622 **/
5623 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5624 struct ipr_mode_pages *mode_pages)
5625 {
5626 int i, entry_length;
5627 struct ipr_dev_bus_entry *bus;
5628 struct ipr_bus_attributes *bus_attr;
5629 struct ipr_mode_page28 *mode_page;
5630
5631 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5632 sizeof(struct ipr_mode_page28));
5633
5634 entry_length = mode_page->entry_length;
5635
5636 /* Loop for each device bus entry */
5637 for (i = 0, bus = mode_page->bus;
5638 i < mode_page->num_entries;
5639 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5640 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5641 dev_err(&ioa_cfg->pdev->dev,
5642 "Invalid resource address reported: 0x%08X\n",
5643 IPR_GET_PHYS_LOC(bus->res_addr));
5644 continue;
5645 }
5646
5647 bus_attr = &ioa_cfg->bus_attr[i];
5648 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5649 bus->bus_width = bus_attr->bus_width;
5650 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5651 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5652 if (bus_attr->qas_enabled)
5653 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5654 else
5655 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5656 }
5657 }
5658
5659 /**
5660 * ipr_build_mode_select - Build a mode select command
5661 * @ipr_cmd: ipr command struct
5662 * @res_handle: resource handle to send command to
5663 * @parm: Byte 2 of Mode Sense command
5664 * @dma_addr: DMA buffer address
5665 * @xfer_len: data transfer length
5666 *
5667 * Return value:
5668 * none
5669 **/
5670 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5671 __be32 res_handle, u8 parm, u32 dma_addr,
5672 u8 xfer_len)
5673 {
5674 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5675 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5676
5677 ioarcb->res_handle = res_handle;
5678 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5679 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5680 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5681 ioarcb->cmd_pkt.cdb[1] = parm;
5682 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5683
5684 ioadl->flags_and_data_len =
5685 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5686 ioadl->address = cpu_to_be32(dma_addr);
5687 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5688 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5689 }
5690
5691 /**
5692 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5693 * @ipr_cmd: ipr command struct
5694 *
5695 * This function sets up the SCSI bus attributes and sends
5696 * a Mode Select for Page 28 to activate them.
5697 *
5698 * Return value:
5699 * IPR_RC_JOB_RETURN
5700 **/
5701 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5702 {
5703 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5704 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5705 int length;
5706
5707 ENTER;
5708 ipr_scsi_bus_speed_limit(ioa_cfg);
5709 ipr_check_term_power(ioa_cfg, mode_pages);
5710 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5711 length = mode_pages->hdr.length + 1;
5712 mode_pages->hdr.length = 0;
5713
5714 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5715 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5716 length);
5717
5718 ipr_cmd->job_step = ipr_setup_write_cache;
5719 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5720
5721 LEAVE;
5722 return IPR_RC_JOB_RETURN;
5723 }
5724
5725 /**
5726 * ipr_build_mode_sense - Builds a mode sense command
5727 * @ipr_cmd: ipr command struct
5728 * @res: resource entry struct
5729 * @parm: Byte 2 of mode sense command
5730 * @dma_addr: DMA address of mode sense buffer
5731 * @xfer_len: Size of DMA buffer
5732 *
5733 * Return value:
5734 * none
5735 **/
5736 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5737 __be32 res_handle,
5738 u8 parm, u32 dma_addr, u8 xfer_len)
5739 {
5740 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5741 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5742
5743 ioarcb->res_handle = res_handle;
5744 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5745 ioarcb->cmd_pkt.cdb[2] = parm;
5746 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5747 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5748
5749 ioadl->flags_and_data_len =
5750 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5751 ioadl->address = cpu_to_be32(dma_addr);
5752 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5753 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5754 }
5755
5756 /**
5757 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5758 * @ipr_cmd: ipr command struct
5759 *
5760 * This function handles the failure of an IOA bringup command.
5761 *
5762 * Return value:
5763 * IPR_RC_JOB_RETURN
5764 **/
5765 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5766 {
5767 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5768 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5769
5770 dev_err(&ioa_cfg->pdev->dev,
5771 "0x%02X failed with IOASC: 0x%08X\n",
5772 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5773
5774 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5775 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5776 return IPR_RC_JOB_RETURN;
5777 }
5778
5779 /**
5780 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5781 * @ipr_cmd: ipr command struct
5782 *
5783 * This function handles the failure of a Mode Sense to the IOAFP.
5784 * Some adapters do not handle all mode pages.
5785 *
5786 * Return value:
5787 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5788 **/
5789 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5790 {
5791 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5792
5793 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5794 ipr_cmd->job_step = ipr_setup_write_cache;
5795 return IPR_RC_JOB_CONTINUE;
5796 }
5797
5798 return ipr_reset_cmd_failed(ipr_cmd);
5799 }
5800
5801 /**
5802 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5803 * @ipr_cmd: ipr command struct
5804 *
5805 * This function send a Page 28 mode sense to the IOA to
5806 * retrieve SCSI bus attributes.
5807 *
5808 * Return value:
5809 * IPR_RC_JOB_RETURN
5810 **/
5811 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5812 {
5813 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5814
5815 ENTER;
5816 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5817 0x28, ioa_cfg->vpd_cbs_dma +
5818 offsetof(struct ipr_misc_cbs, mode_pages),
5819 sizeof(struct ipr_mode_pages));
5820
5821 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
5822 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
5823
5824 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5825
5826 LEAVE;
5827 return IPR_RC_JOB_RETURN;
5828 }
5829
5830 /**
5831 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
5832 * @ipr_cmd: ipr command struct
5833 *
5834 * This function enables dual IOA RAID support if possible.
5835 *
5836 * Return value:
5837 * IPR_RC_JOB_RETURN
5838 **/
5839 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
5840 {
5841 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5842 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5843 struct ipr_mode_page24 *mode_page;
5844 int length;
5845
5846 ENTER;
5847 mode_page = ipr_get_mode_page(mode_pages, 0x24,
5848 sizeof(struct ipr_mode_page24));
5849
5850 if (mode_page)
5851 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
5852
5853 length = mode_pages->hdr.length + 1;
5854 mode_pages->hdr.length = 0;
5855
5856 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5857 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5858 length);
5859
5860 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5861 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5862
5863 LEAVE;
5864 return IPR_RC_JOB_RETURN;
5865 }
5866
5867 /**
5868 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
5869 * @ipr_cmd: ipr command struct
5870 *
5871 * This function handles the failure of a Mode Sense to the IOAFP.
5872 * Some adapters do not handle all mode pages.
5873 *
5874 * Return value:
5875 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5876 **/
5877 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
5878 {
5879 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5880
5881 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5882 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5883 return IPR_RC_JOB_CONTINUE;
5884 }
5885
5886 return ipr_reset_cmd_failed(ipr_cmd);
5887 }
5888
5889 /**
5890 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
5891 * @ipr_cmd: ipr command struct
5892 *
5893 * This function send a mode sense to the IOA to retrieve
5894 * the IOA Advanced Function Control mode page.
5895 *
5896 * Return value:
5897 * IPR_RC_JOB_RETURN
5898 **/
5899 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
5900 {
5901 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5902
5903 ENTER;
5904 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5905 0x24, ioa_cfg->vpd_cbs_dma +
5906 offsetof(struct ipr_misc_cbs, mode_pages),
5907 sizeof(struct ipr_mode_pages));
5908
5909 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
5910 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
5911
5912 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5913
5914 LEAVE;
5915 return IPR_RC_JOB_RETURN;
5916 }
5917
5918 /**
5919 * ipr_init_res_table - Initialize the resource table
5920 * @ipr_cmd: ipr command struct
5921 *
5922 * This function looks through the existing resource table, comparing
5923 * it with the config table. This function will take care of old/new
5924 * devices and schedule adding/removing them from the mid-layer
5925 * as appropriate.
5926 *
5927 * Return value:
5928 * IPR_RC_JOB_CONTINUE
5929 **/
5930 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5931 {
5932 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5933 struct ipr_resource_entry *res, *temp;
5934 struct ipr_config_table_entry *cfgte;
5935 int found, i;
5936 LIST_HEAD(old_res);
5937
5938 ENTER;
5939 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5940 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5941
5942 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5943 list_move_tail(&res->queue, &old_res);
5944
5945 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5946 cfgte = &ioa_cfg->cfg_table->dev[i];
5947 found = 0;
5948
5949 list_for_each_entry_safe(res, temp, &old_res, queue) {
5950 if (!memcmp(&res->cfgte.res_addr,
5951 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5952 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5953 found = 1;
5954 break;
5955 }
5956 }
5957
5958 if (!found) {
5959 if (list_empty(&ioa_cfg->free_res_q)) {
5960 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5961 break;
5962 }
5963
5964 found = 1;
5965 res = list_entry(ioa_cfg->free_res_q.next,
5966 struct ipr_resource_entry, queue);
5967 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5968 ipr_init_res_entry(res);
5969 res->add_to_ml = 1;
5970 }
5971
5972 if (found)
5973 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5974 }
5975
5976 list_for_each_entry_safe(res, temp, &old_res, queue) {
5977 if (res->sdev) {
5978 res->del_from_ml = 1;
5979 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
5980 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5981 } else {
5982 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5983 }
5984 }
5985
5986 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
5987 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
5988 else
5989 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5990
5991 LEAVE;
5992 return IPR_RC_JOB_CONTINUE;
5993 }
5994
5995 /**
5996 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
5997 * @ipr_cmd: ipr command struct
5998 *
5999 * This function sends a Query IOA Configuration command
6000 * to the adapter to retrieve the IOA configuration table.
6001 *
6002 * Return value:
6003 * IPR_RC_JOB_RETURN
6004 **/
6005 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6006 {
6007 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6008 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6009 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6010 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
6011 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6012
6013 ENTER;
6014 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6015 ioa_cfg->dual_raid = 1;
6016 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6017 ucode_vpd->major_release, ucode_vpd->card_type,
6018 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6019 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6020 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6021
6022 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
6023 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
6024 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
6025
6026 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6027 ioarcb->read_data_transfer_length =
6028 cpu_to_be32(sizeof(struct ipr_config_table));
6029
6030 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
6031 ioadl->flags_and_data_len =
6032 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
6033
6034 ipr_cmd->job_step = ipr_init_res_table;
6035
6036 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6037
6038 LEAVE;
6039 return IPR_RC_JOB_RETURN;
6040 }
6041
6042 /**
6043 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6044 * @ipr_cmd: ipr command struct
6045 *
6046 * This utility function sends an inquiry to the adapter.
6047 *
6048 * Return value:
6049 * none
6050 **/
6051 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
6052 u32 dma_addr, u8 xfer_len)
6053 {
6054 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6055 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6056
6057 ENTER;
6058 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6059 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6060
6061 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6062 ioarcb->cmd_pkt.cdb[1] = flags;
6063 ioarcb->cmd_pkt.cdb[2] = page;
6064 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6065
6066 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6067 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
6068
6069 ioadl->address = cpu_to_be32(dma_addr);
6070 ioadl->flags_and_data_len =
6071 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
6072
6073 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6074 LEAVE;
6075 }
6076
6077 /**
6078 * ipr_inquiry_page_supported - Is the given inquiry page supported
6079 * @page0: inquiry page 0 buffer
6080 * @page: page code.
6081 *
6082 * This function determines if the specified inquiry page is supported.
6083 *
6084 * Return value:
6085 * 1 if page is supported / 0 if not
6086 **/
6087 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
6088 {
6089 int i;
6090
6091 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
6092 if (page0->page[i] == page)
6093 return 1;
6094
6095 return 0;
6096 }
6097
6098 /**
6099 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
6100 * @ipr_cmd: ipr command struct
6101 *
6102 * This function sends a Page 0xD0 inquiry to the adapter
6103 * to retrieve adapter capabilities.
6104 *
6105 * Return value:
6106 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6107 **/
6108 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
6109 {
6110 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6111 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6112 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6113
6114 ENTER;
6115 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
6116 memset(cap, 0, sizeof(*cap));
6117
6118 if (ipr_inquiry_page_supported(page0, 0xD0)) {
6119 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
6120 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
6121 sizeof(struct ipr_inquiry_cap));
6122 return IPR_RC_JOB_RETURN;
6123 }
6124
6125 LEAVE;
6126 return IPR_RC_JOB_CONTINUE;
6127 }
6128
6129 /**
6130 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
6131 * @ipr_cmd: ipr command struct
6132 *
6133 * This function sends a Page 3 inquiry to the adapter
6134 * to retrieve software VPD information.
6135 *
6136 * Return value:
6137 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6138 **/
6139 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
6140 {
6141 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6142 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6143
6144 ENTER;
6145
6146 if (!ipr_inquiry_page_supported(page0, 1))
6147 ioa_cfg->cache_state = CACHE_NONE;
6148
6149 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
6150
6151 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
6152 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
6153 sizeof(struct ipr_inquiry_page3));
6154
6155 LEAVE;
6156 return IPR_RC_JOB_RETURN;
6157 }
6158
6159 /**
6160 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
6161 * @ipr_cmd: ipr command struct
6162 *
6163 * This function sends a Page 0 inquiry to the adapter
6164 * to retrieve supported inquiry pages.
6165 *
6166 * Return value:
6167 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6168 **/
6169 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
6170 {
6171 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6172 char type[5];
6173
6174 ENTER;
6175
6176 /* Grab the type out of the VPD and store it away */
6177 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
6178 type[4] = '\0';
6179 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6180
6181 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
6182
6183 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6184 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6185 sizeof(struct ipr_inquiry_page0));
6186
6187 LEAVE;
6188 return IPR_RC_JOB_RETURN;
6189 }
6190
6191 /**
6192 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6193 * @ipr_cmd: ipr command struct
6194 *
6195 * This function sends a standard inquiry to the adapter.
6196 *
6197 * Return value:
6198 * IPR_RC_JOB_RETURN
6199 **/
6200 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6201 {
6202 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6203
6204 ENTER;
6205 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
6206
6207 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6208 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6209 sizeof(struct ipr_ioa_vpd));
6210
6211 LEAVE;
6212 return IPR_RC_JOB_RETURN;
6213 }
6214
6215 /**
6216 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6217 * @ipr_cmd: ipr command struct
6218 *
6219 * This function send an Identify Host Request Response Queue
6220 * command to establish the HRRQ with the adapter.
6221 *
6222 * Return value:
6223 * IPR_RC_JOB_RETURN
6224 **/
6225 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6226 {
6227 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6228 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6229
6230 ENTER;
6231 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6232
6233 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6234 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6235
6236 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6237 ioarcb->cmd_pkt.cdb[2] =
6238 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6239 ioarcb->cmd_pkt.cdb[3] =
6240 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6241 ioarcb->cmd_pkt.cdb[4] =
6242 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6243 ioarcb->cmd_pkt.cdb[5] =
6244 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6245 ioarcb->cmd_pkt.cdb[7] =
6246 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6247 ioarcb->cmd_pkt.cdb[8] =
6248 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6249
6250 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6251
6252 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6253
6254 LEAVE;
6255 return IPR_RC_JOB_RETURN;
6256 }
6257
6258 /**
6259 * ipr_reset_timer_done - Adapter reset timer function
6260 * @ipr_cmd: ipr command struct
6261 *
6262 * Description: This function is used in adapter reset processing
6263 * for timing events. If the reset_cmd pointer in the IOA
6264 * config struct is not this adapter's we are doing nested
6265 * resets and fail_all_ops will take care of freeing the
6266 * command block.
6267 *
6268 * Return value:
6269 * none
6270 **/
6271 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6272 {
6273 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6274 unsigned long lock_flags = 0;
6275
6276 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6277
6278 if (ioa_cfg->reset_cmd == ipr_cmd) {
6279 list_del(&ipr_cmd->queue);
6280 ipr_cmd->done(ipr_cmd);
6281 }
6282
6283 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6284 }
6285
6286 /**
6287 * ipr_reset_start_timer - Start a timer for adapter reset job
6288 * @ipr_cmd: ipr command struct
6289 * @timeout: timeout value
6290 *
6291 * Description: This function is used in adapter reset processing
6292 * for timing events. If the reset_cmd pointer in the IOA
6293 * config struct is not this adapter's we are doing nested
6294 * resets and fail_all_ops will take care of freeing the
6295 * command block.
6296 *
6297 * Return value:
6298 * none
6299 **/
6300 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6301 unsigned long timeout)
6302 {
6303 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6304 ipr_cmd->done = ipr_reset_ioa_job;
6305
6306 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6307 ipr_cmd->timer.expires = jiffies + timeout;
6308 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6309 add_timer(&ipr_cmd->timer);
6310 }
6311
6312 /**
6313 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6314 * @ioa_cfg: ioa cfg struct
6315 *
6316 * Return value:
6317 * nothing
6318 **/
6319 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6320 {
6321 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6322
6323 /* Initialize Host RRQ pointers */
6324 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6325 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6326 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6327 ioa_cfg->toggle_bit = 1;
6328
6329 /* Zero out config table */
6330 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6331 }
6332
6333 /**
6334 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6335 * @ipr_cmd: ipr command struct
6336 *
6337 * This function reinitializes some control blocks and
6338 * enables destructive diagnostics on the adapter.
6339 *
6340 * Return value:
6341 * IPR_RC_JOB_RETURN
6342 **/
6343 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6344 {
6345 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6346 volatile u32 int_reg;
6347
6348 ENTER;
6349 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6350 ipr_init_ioa_mem(ioa_cfg);
6351
6352 ioa_cfg->allow_interrupts = 1;
6353 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6354
6355 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6356 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6357 ioa_cfg->regs.clr_interrupt_mask_reg);
6358 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6359 return IPR_RC_JOB_CONTINUE;
6360 }
6361
6362 /* Enable destructive diagnostics on IOA */
6363 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
6364
6365 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6366 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6367
6368 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6369
6370 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6371 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
6372 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6373 ipr_cmd->done = ipr_reset_ioa_job;
6374 add_timer(&ipr_cmd->timer);
6375 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6376
6377 LEAVE;
6378 return IPR_RC_JOB_RETURN;
6379 }
6380
6381 /**
6382 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6383 * @ipr_cmd: ipr command struct
6384 *
6385 * This function is invoked when an adapter dump has run out
6386 * of processing time.
6387 *
6388 * Return value:
6389 * IPR_RC_JOB_CONTINUE
6390 **/
6391 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6392 {
6393 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6394
6395 if (ioa_cfg->sdt_state == GET_DUMP)
6396 ioa_cfg->sdt_state = ABORT_DUMP;
6397
6398 ipr_cmd->job_step = ipr_reset_alert;
6399
6400 return IPR_RC_JOB_CONTINUE;
6401 }
6402
6403 /**
6404 * ipr_unit_check_no_data - Log a unit check/no data error log
6405 * @ioa_cfg: ioa config struct
6406 *
6407 * Logs an error indicating the adapter unit checked, but for some
6408 * reason, we were unable to fetch the unit check buffer.
6409 *
6410 * Return value:
6411 * nothing
6412 **/
6413 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6414 {
6415 ioa_cfg->errors_logged++;
6416 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6417 }
6418
6419 /**
6420 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6421 * @ioa_cfg: ioa config struct
6422 *
6423 * Fetches the unit check buffer from the adapter by clocking the data
6424 * through the mailbox register.
6425 *
6426 * Return value:
6427 * nothing
6428 **/
6429 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6430 {
6431 unsigned long mailbox;
6432 struct ipr_hostrcb *hostrcb;
6433 struct ipr_uc_sdt sdt;
6434 int rc, length;
6435 u32 ioasc;
6436
6437 mailbox = readl(ioa_cfg->ioa_mailbox);
6438
6439 if (!ipr_sdt_is_fmt2(mailbox)) {
6440 ipr_unit_check_no_data(ioa_cfg);
6441 return;
6442 }
6443
6444 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6445 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6446 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6447
6448 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6449 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6450 ipr_unit_check_no_data(ioa_cfg);
6451 return;
6452 }
6453
6454 /* Find length of the first sdt entry (UC buffer) */
6455 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6456 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6457
6458 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6459 struct ipr_hostrcb, queue);
6460 list_del(&hostrcb->queue);
6461 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6462
6463 rc = ipr_get_ldump_data_section(ioa_cfg,
6464 be32_to_cpu(sdt.entry[0].bar_str_offset),
6465 (__be32 *)&hostrcb->hcam,
6466 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6467
6468 if (!rc) {
6469 ipr_handle_log_data(ioa_cfg, hostrcb);
6470 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
6471 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
6472 ioa_cfg->sdt_state == GET_DUMP)
6473 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
6474 } else
6475 ipr_unit_check_no_data(ioa_cfg);
6476
6477 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6478 }
6479
6480 /**
6481 * ipr_reset_restore_cfg_space - Restore PCI config space.
6482 * @ipr_cmd: ipr command struct
6483 *
6484 * Description: This function restores the saved PCI config space of
6485 * the adapter, fails all outstanding ops back to the callers, and
6486 * fetches the dump/unit check if applicable to this reset.
6487 *
6488 * Return value:
6489 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6490 **/
6491 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6492 {
6493 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6494 int rc;
6495
6496 ENTER;
6497 rc = pci_restore_state(ioa_cfg->pdev);
6498
6499 if (rc != PCIBIOS_SUCCESSFUL) {
6500 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6501 return IPR_RC_JOB_CONTINUE;
6502 }
6503
6504 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6505 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6506 return IPR_RC_JOB_CONTINUE;
6507 }
6508
6509 ipr_fail_all_ops(ioa_cfg);
6510
6511 if (ioa_cfg->ioa_unit_checked) {
6512 ioa_cfg->ioa_unit_checked = 0;
6513 ipr_get_unit_check_buffer(ioa_cfg);
6514 ipr_cmd->job_step = ipr_reset_alert;
6515 ipr_reset_start_timer(ipr_cmd, 0);
6516 return IPR_RC_JOB_RETURN;
6517 }
6518
6519 if (ioa_cfg->in_ioa_bringdown) {
6520 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6521 } else {
6522 ipr_cmd->job_step = ipr_reset_enable_ioa;
6523
6524 if (GET_DUMP == ioa_cfg->sdt_state) {
6525 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6526 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6527 schedule_work(&ioa_cfg->work_q);
6528 return IPR_RC_JOB_RETURN;
6529 }
6530 }
6531
6532 ENTER;
6533 return IPR_RC_JOB_CONTINUE;
6534 }
6535
6536 /**
6537 * ipr_reset_bist_done - BIST has completed on the adapter.
6538 * @ipr_cmd: ipr command struct
6539 *
6540 * Description: Unblock config space and resume the reset process.
6541 *
6542 * Return value:
6543 * IPR_RC_JOB_CONTINUE
6544 **/
6545 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6546 {
6547 ENTER;
6548 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6549 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6550 LEAVE;
6551 return IPR_RC_JOB_CONTINUE;
6552 }
6553
6554 /**
6555 * ipr_reset_start_bist - Run BIST on the adapter.
6556 * @ipr_cmd: ipr command struct
6557 *
6558 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6559 *
6560 * Return value:
6561 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6562 **/
6563 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6564 {
6565 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6566 int rc;
6567
6568 ENTER;
6569 pci_block_user_cfg_access(ioa_cfg->pdev);
6570 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6571
6572 if (rc != PCIBIOS_SUCCESSFUL) {
6573 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6574 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6575 rc = IPR_RC_JOB_CONTINUE;
6576 } else {
6577 ipr_cmd->job_step = ipr_reset_bist_done;
6578 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6579 rc = IPR_RC_JOB_RETURN;
6580 }
6581
6582 LEAVE;
6583 return rc;
6584 }
6585
6586 /**
6587 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
6588 * @ipr_cmd: ipr command struct
6589 *
6590 * Description: This clears PCI reset to the adapter and delays two seconds.
6591 *
6592 * Return value:
6593 * IPR_RC_JOB_RETURN
6594 **/
6595 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
6596 {
6597 ENTER;
6598 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
6599 ipr_cmd->job_step = ipr_reset_bist_done;
6600 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6601 LEAVE;
6602 return IPR_RC_JOB_RETURN;
6603 }
6604
6605 /**
6606 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
6607 * @ipr_cmd: ipr command struct
6608 *
6609 * Description: This asserts PCI reset to the adapter.
6610 *
6611 * Return value:
6612 * IPR_RC_JOB_RETURN
6613 **/
6614 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
6615 {
6616 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6617 struct pci_dev *pdev = ioa_cfg->pdev;
6618
6619 ENTER;
6620 pci_block_user_cfg_access(pdev);
6621 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
6622 ipr_cmd->job_step = ipr_reset_slot_reset_done;
6623 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
6624 LEAVE;
6625 return IPR_RC_JOB_RETURN;
6626 }
6627
6628 /**
6629 * ipr_reset_allowed - Query whether or not IOA can be reset
6630 * @ioa_cfg: ioa config struct
6631 *
6632 * Return value:
6633 * 0 if reset not allowed / non-zero if reset is allowed
6634 **/
6635 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6636 {
6637 volatile u32 temp_reg;
6638
6639 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6640 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6641 }
6642
6643 /**
6644 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6645 * @ipr_cmd: ipr command struct
6646 *
6647 * Description: This function waits for adapter permission to run BIST,
6648 * then runs BIST. If the adapter does not give permission after a
6649 * reasonable time, we will reset the adapter anyway. The impact of
6650 * resetting the adapter without warning the adapter is the risk of
6651 * losing the persistent error log on the adapter. If the adapter is
6652 * reset while it is writing to the flash on the adapter, the flash
6653 * segment will have bad ECC and be zeroed.
6654 *
6655 * Return value:
6656 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6657 **/
6658 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6659 {
6660 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6661 int rc = IPR_RC_JOB_RETURN;
6662
6663 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6664 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6665 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6666 } else {
6667 ipr_cmd->job_step = ioa_cfg->reset;
6668 rc = IPR_RC_JOB_CONTINUE;
6669 }
6670
6671 return rc;
6672 }
6673
6674 /**
6675 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6676 * @ipr_cmd: ipr command struct
6677 *
6678 * Description: This function alerts the adapter that it will be reset.
6679 * If memory space is not currently enabled, proceed directly
6680 * to running BIST on the adapter. The timer must always be started
6681 * so we guarantee we do not run BIST from ipr_isr.
6682 *
6683 * Return value:
6684 * IPR_RC_JOB_RETURN
6685 **/
6686 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6687 {
6688 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6689 u16 cmd_reg;
6690 int rc;
6691
6692 ENTER;
6693 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6694
6695 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6696 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6697 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6698 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6699 } else {
6700 ipr_cmd->job_step = ioa_cfg->reset;
6701 }
6702
6703 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6704 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6705
6706 LEAVE;
6707 return IPR_RC_JOB_RETURN;
6708 }
6709
6710 /**
6711 * ipr_reset_ucode_download_done - Microcode download completion
6712 * @ipr_cmd: ipr command struct
6713 *
6714 * Description: This function unmaps the microcode download buffer.
6715 *
6716 * Return value:
6717 * IPR_RC_JOB_CONTINUE
6718 **/
6719 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6720 {
6721 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6722 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6723
6724 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6725 sglist->num_sg, DMA_TO_DEVICE);
6726
6727 ipr_cmd->job_step = ipr_reset_alert;
6728 return IPR_RC_JOB_CONTINUE;
6729 }
6730
6731 /**
6732 * ipr_reset_ucode_download - Download microcode to the adapter
6733 * @ipr_cmd: ipr command struct
6734 *
6735 * Description: This function checks to see if it there is microcode
6736 * to download to the adapter. If there is, a download is performed.
6737 *
6738 * Return value:
6739 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6740 **/
6741 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6742 {
6743 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6744 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6745
6746 ENTER;
6747 ipr_cmd->job_step = ipr_reset_alert;
6748
6749 if (!sglist)
6750 return IPR_RC_JOB_CONTINUE;
6751
6752 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6753 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6754 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6755 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6756 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6757 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6758 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6759
6760 ipr_build_ucode_ioadl(ipr_cmd, sglist);
6761 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6762
6763 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6764 IPR_WRITE_BUFFER_TIMEOUT);
6765
6766 LEAVE;
6767 return IPR_RC_JOB_RETURN;
6768 }
6769
6770 /**
6771 * ipr_reset_shutdown_ioa - Shutdown the adapter
6772 * @ipr_cmd: ipr command struct
6773 *
6774 * Description: This function issues an adapter shutdown of the
6775 * specified type to the specified adapter as part of the
6776 * adapter reset job.
6777 *
6778 * Return value:
6779 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6780 **/
6781 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6782 {
6783 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6784 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6785 unsigned long timeout;
6786 int rc = IPR_RC_JOB_CONTINUE;
6787
6788 ENTER;
6789 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6790 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6791 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6792 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6793 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6794
6795 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
6796 timeout = IPR_SHUTDOWN_TIMEOUT;
6797 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6798 timeout = IPR_INTERNAL_TIMEOUT;
6799 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6800 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
6801 else
6802 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
6803
6804 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6805
6806 rc = IPR_RC_JOB_RETURN;
6807 ipr_cmd->job_step = ipr_reset_ucode_download;
6808 } else
6809 ipr_cmd->job_step = ipr_reset_alert;
6810
6811 LEAVE;
6812 return rc;
6813 }
6814
6815 /**
6816 * ipr_reset_ioa_job - Adapter reset job
6817 * @ipr_cmd: ipr command struct
6818 *
6819 * Description: This function is the job router for the adapter reset job.
6820 *
6821 * Return value:
6822 * none
6823 **/
6824 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6825 {
6826 u32 rc, ioasc;
6827 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6828
6829 do {
6830 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6831
6832 if (ioa_cfg->reset_cmd != ipr_cmd) {
6833 /*
6834 * We are doing nested adapter resets and this is
6835 * not the current reset job.
6836 */
6837 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6838 return;
6839 }
6840
6841 if (IPR_IOASC_SENSE_KEY(ioasc)) {
6842 rc = ipr_cmd->job_step_failed(ipr_cmd);
6843 if (rc == IPR_RC_JOB_RETURN)
6844 return;
6845 }
6846
6847 ipr_reinit_ipr_cmnd(ipr_cmd);
6848 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
6849 rc = ipr_cmd->job_step(ipr_cmd);
6850 } while(rc == IPR_RC_JOB_CONTINUE);
6851 }
6852
6853 /**
6854 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6855 * @ioa_cfg: ioa config struct
6856 * @job_step: first job step of reset job
6857 * @shutdown_type: shutdown type
6858 *
6859 * Description: This function will initiate the reset of the given adapter
6860 * starting at the selected job step.
6861 * If the caller needs to wait on the completion of the reset,
6862 * the caller must sleep on the reset_wait_q.
6863 *
6864 * Return value:
6865 * none
6866 **/
6867 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6868 int (*job_step) (struct ipr_cmnd *),
6869 enum ipr_shutdown_type shutdown_type)
6870 {
6871 struct ipr_cmnd *ipr_cmd;
6872
6873 ioa_cfg->in_reset_reload = 1;
6874 ioa_cfg->allow_cmds = 0;
6875 scsi_block_requests(ioa_cfg->host);
6876
6877 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6878 ioa_cfg->reset_cmd = ipr_cmd;
6879 ipr_cmd->job_step = job_step;
6880 ipr_cmd->u.shutdown_type = shutdown_type;
6881
6882 ipr_reset_ioa_job(ipr_cmd);
6883 }
6884
6885 /**
6886 * ipr_initiate_ioa_reset - Initiate an adapter reset
6887 * @ioa_cfg: ioa config struct
6888 * @shutdown_type: shutdown type
6889 *
6890 * Description: This function will initiate the reset of the given adapter.
6891 * If the caller needs to wait on the completion of the reset,
6892 * the caller must sleep on the reset_wait_q.
6893 *
6894 * Return value:
6895 * none
6896 **/
6897 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6898 enum ipr_shutdown_type shutdown_type)
6899 {
6900 if (ioa_cfg->ioa_is_dead)
6901 return;
6902
6903 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6904 ioa_cfg->sdt_state = ABORT_DUMP;
6905
6906 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6907 dev_err(&ioa_cfg->pdev->dev,
6908 "IOA taken offline - error recovery failed\n");
6909
6910 ioa_cfg->reset_retries = 0;
6911 ioa_cfg->ioa_is_dead = 1;
6912
6913 if (ioa_cfg->in_ioa_bringdown) {
6914 ioa_cfg->reset_cmd = NULL;
6915 ioa_cfg->in_reset_reload = 0;
6916 ipr_fail_all_ops(ioa_cfg);
6917 wake_up_all(&ioa_cfg->reset_wait_q);
6918
6919 spin_unlock_irq(ioa_cfg->host->host_lock);
6920 scsi_unblock_requests(ioa_cfg->host);
6921 spin_lock_irq(ioa_cfg->host->host_lock);
6922 return;
6923 } else {
6924 ioa_cfg->in_ioa_bringdown = 1;
6925 shutdown_type = IPR_SHUTDOWN_NONE;
6926 }
6927 }
6928
6929 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6930 shutdown_type);
6931 }
6932
6933 /**
6934 * ipr_reset_freeze - Hold off all I/O activity
6935 * @ipr_cmd: ipr command struct
6936 *
6937 * Description: If the PCI slot is frozen, hold off all I/O
6938 * activity; then, as soon as the slot is available again,
6939 * initiate an adapter reset.
6940 */
6941 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6942 {
6943 /* Disallow new interrupts, avoid loop */
6944 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6945 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6946 ipr_cmd->done = ipr_reset_ioa_job;
6947 return IPR_RC_JOB_RETURN;
6948 }
6949
6950 /**
6951 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6952 * @pdev: PCI device struct
6953 *
6954 * Description: This routine is called to tell us that the PCI bus
6955 * is down. Can't do anything here, except put the device driver
6956 * into a holding pattern, waiting for the PCI bus to come back.
6957 */
6958 static void ipr_pci_frozen(struct pci_dev *pdev)
6959 {
6960 unsigned long flags = 0;
6961 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6962
6963 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6964 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6965 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6966 }
6967
6968 /**
6969 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6970 * @pdev: PCI device struct
6971 *
6972 * Description: This routine is called by the pci error recovery
6973 * code after the PCI slot has been reset, just before we
6974 * should resume normal operations.
6975 */
6976 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6977 {
6978 unsigned long flags = 0;
6979 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6980
6981 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6982 if (ioa_cfg->needs_warm_reset)
6983 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6984 else
6985 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
6986 IPR_SHUTDOWN_NONE);
6987 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6988 return PCI_ERS_RESULT_RECOVERED;
6989 }
6990
6991 /**
6992 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
6993 * @pdev: PCI device struct
6994 *
6995 * Description: This routine is called when the PCI bus has
6996 * permanently failed.
6997 */
6998 static void ipr_pci_perm_failure(struct pci_dev *pdev)
6999 {
7000 unsigned long flags = 0;
7001 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7002
7003 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7004 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7005 ioa_cfg->sdt_state = ABORT_DUMP;
7006 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
7007 ioa_cfg->in_ioa_bringdown = 1;
7008 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7009 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7010 }
7011
7012 /**
7013 * ipr_pci_error_detected - Called when a PCI error is detected.
7014 * @pdev: PCI device struct
7015 * @state: PCI channel state
7016 *
7017 * Description: Called when a PCI error is detected.
7018 *
7019 * Return value:
7020 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
7021 */
7022 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
7023 pci_channel_state_t state)
7024 {
7025 switch (state) {
7026 case pci_channel_io_frozen:
7027 ipr_pci_frozen(pdev);
7028 return PCI_ERS_RESULT_NEED_RESET;
7029 case pci_channel_io_perm_failure:
7030 ipr_pci_perm_failure(pdev);
7031 return PCI_ERS_RESULT_DISCONNECT;
7032 break;
7033 default:
7034 break;
7035 }
7036 return PCI_ERS_RESULT_NEED_RESET;
7037 }
7038
7039 /**
7040 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
7041 * @ioa_cfg: ioa cfg struct
7042 *
7043 * Description: This is the second phase of adapter intialization
7044 * This function takes care of initilizing the adapter to the point
7045 * where it can accept new commands.
7046
7047 * Return value:
7048 * 0 on sucess / -EIO on failure
7049 **/
7050 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
7051 {
7052 int rc = 0;
7053 unsigned long host_lock_flags = 0;
7054
7055 ENTER;
7056 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7057 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
7058 if (ioa_cfg->needs_hard_reset) {
7059 ioa_cfg->needs_hard_reset = 0;
7060 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7061 } else
7062 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
7063 IPR_SHUTDOWN_NONE);
7064
7065 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7066 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7067 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7068
7069 if (ioa_cfg->ioa_is_dead) {
7070 rc = -EIO;
7071 } else if (ipr_invalid_adapter(ioa_cfg)) {
7072 if (!ipr_testmode)
7073 rc = -EIO;
7074
7075 dev_err(&ioa_cfg->pdev->dev,
7076 "Adapter not supported in this hardware configuration.\n");
7077 }
7078
7079 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7080
7081 LEAVE;
7082 return rc;
7083 }
7084
7085 /**
7086 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
7087 * @ioa_cfg: ioa config struct
7088 *
7089 * Return value:
7090 * none
7091 **/
7092 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7093 {
7094 int i;
7095
7096 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7097 if (ioa_cfg->ipr_cmnd_list[i])
7098 pci_pool_free(ioa_cfg->ipr_cmd_pool,
7099 ioa_cfg->ipr_cmnd_list[i],
7100 ioa_cfg->ipr_cmnd_list_dma[i]);
7101
7102 ioa_cfg->ipr_cmnd_list[i] = NULL;
7103 }
7104
7105 if (ioa_cfg->ipr_cmd_pool)
7106 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
7107
7108 ioa_cfg->ipr_cmd_pool = NULL;
7109 }
7110
7111 /**
7112 * ipr_free_mem - Frees memory allocated for an adapter
7113 * @ioa_cfg: ioa cfg struct
7114 *
7115 * Return value:
7116 * nothing
7117 **/
7118 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
7119 {
7120 int i;
7121
7122 kfree(ioa_cfg->res_entries);
7123 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
7124 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7125 ipr_free_cmd_blks(ioa_cfg);
7126 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7127 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7128 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
7129 ioa_cfg->cfg_table,
7130 ioa_cfg->cfg_table_dma);
7131
7132 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7133 pci_free_consistent(ioa_cfg->pdev,
7134 sizeof(struct ipr_hostrcb),
7135 ioa_cfg->hostrcb[i],
7136 ioa_cfg->hostrcb_dma[i]);
7137 }
7138
7139 ipr_free_dump(ioa_cfg);
7140 kfree(ioa_cfg->trace);
7141 }
7142
7143 /**
7144 * ipr_free_all_resources - Free all allocated resources for an adapter.
7145 * @ipr_cmd: ipr command struct
7146 *
7147 * This function frees all allocated resources for the
7148 * specified adapter.
7149 *
7150 * Return value:
7151 * none
7152 **/
7153 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
7154 {
7155 struct pci_dev *pdev = ioa_cfg->pdev;
7156
7157 ENTER;
7158 free_irq(pdev->irq, ioa_cfg);
7159 iounmap(ioa_cfg->hdw_dma_regs);
7160 pci_release_regions(pdev);
7161 ipr_free_mem(ioa_cfg);
7162 scsi_host_put(ioa_cfg->host);
7163 pci_disable_device(pdev);
7164 LEAVE;
7165 }
7166
7167 /**
7168 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
7169 * @ioa_cfg: ioa config struct
7170 *
7171 * Return value:
7172 * 0 on success / -ENOMEM on allocation failure
7173 **/
7174 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7175 {
7176 struct ipr_cmnd *ipr_cmd;
7177 struct ipr_ioarcb *ioarcb;
7178 dma_addr_t dma_addr;
7179 int i;
7180
7181 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
7182 sizeof(struct ipr_cmnd), 8, 0);
7183
7184 if (!ioa_cfg->ipr_cmd_pool)
7185 return -ENOMEM;
7186
7187 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7188 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
7189
7190 if (!ipr_cmd) {
7191 ipr_free_cmd_blks(ioa_cfg);
7192 return -ENOMEM;
7193 }
7194
7195 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
7196 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
7197 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
7198
7199 ioarcb = &ipr_cmd->ioarcb;
7200 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
7201 ioarcb->host_response_handle = cpu_to_be32(i << 2);
7202 ioarcb->write_ioadl_addr =
7203 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
7204 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
7205 ioarcb->ioasa_host_pci_addr =
7206 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
7207 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
7208 ipr_cmd->cmd_index = i;
7209 ipr_cmd->ioa_cfg = ioa_cfg;
7210 ipr_cmd->sense_buffer_dma = dma_addr +
7211 offsetof(struct ipr_cmnd, sense_buffer);
7212
7213 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7214 }
7215
7216 return 0;
7217 }
7218
7219 /**
7220 * ipr_alloc_mem - Allocate memory for an adapter
7221 * @ioa_cfg: ioa config struct
7222 *
7223 * Return value:
7224 * 0 on success / non-zero for error
7225 **/
7226 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
7227 {
7228 struct pci_dev *pdev = ioa_cfg->pdev;
7229 int i, rc = -ENOMEM;
7230
7231 ENTER;
7232 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
7233 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7234
7235 if (!ioa_cfg->res_entries)
7236 goto out;
7237
7238 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7239 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7240
7241 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7242 sizeof(struct ipr_misc_cbs),
7243 &ioa_cfg->vpd_cbs_dma);
7244
7245 if (!ioa_cfg->vpd_cbs)
7246 goto out_free_res_entries;
7247
7248 if (ipr_alloc_cmd_blks(ioa_cfg))
7249 goto out_free_vpd_cbs;
7250
7251 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7252 sizeof(u32) * IPR_NUM_CMD_BLKS,
7253 &ioa_cfg->host_rrq_dma);
7254
7255 if (!ioa_cfg->host_rrq)
7256 goto out_ipr_free_cmd_blocks;
7257
7258 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7259 sizeof(struct ipr_config_table),
7260 &ioa_cfg->cfg_table_dma);
7261
7262 if (!ioa_cfg->cfg_table)
7263 goto out_free_host_rrq;
7264
7265 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7266 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7267 sizeof(struct ipr_hostrcb),
7268 &ioa_cfg->hostrcb_dma[i]);
7269
7270 if (!ioa_cfg->hostrcb[i])
7271 goto out_free_hostrcb_dma;
7272
7273 ioa_cfg->hostrcb[i]->hostrcb_dma =
7274 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
7275 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
7276 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7277 }
7278
7279 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
7280 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7281
7282 if (!ioa_cfg->trace)
7283 goto out_free_hostrcb_dma;
7284
7285 rc = 0;
7286 out:
7287 LEAVE;
7288 return rc;
7289
7290 out_free_hostrcb_dma:
7291 while (i-- > 0) {
7292 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7293 ioa_cfg->hostrcb[i],
7294 ioa_cfg->hostrcb_dma[i]);
7295 }
7296 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7297 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7298 out_free_host_rrq:
7299 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7300 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7301 out_ipr_free_cmd_blocks:
7302 ipr_free_cmd_blks(ioa_cfg);
7303 out_free_vpd_cbs:
7304 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7305 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7306 out_free_res_entries:
7307 kfree(ioa_cfg->res_entries);
7308 goto out;
7309 }
7310
7311 /**
7312 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7313 * @ioa_cfg: ioa config struct
7314 *
7315 * Return value:
7316 * none
7317 **/
7318 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7319 {
7320 int i;
7321
7322 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7323 ioa_cfg->bus_attr[i].bus = i;
7324 ioa_cfg->bus_attr[i].qas_enabled = 0;
7325 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7326 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7327 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7328 else
7329 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7330 }
7331 }
7332
7333 /**
7334 * ipr_init_ioa_cfg - Initialize IOA config struct
7335 * @ioa_cfg: ioa config struct
7336 * @host: scsi host struct
7337 * @pdev: PCI dev struct
7338 *
7339 * Return value:
7340 * none
7341 **/
7342 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7343 struct Scsi_Host *host, struct pci_dev *pdev)
7344 {
7345 const struct ipr_interrupt_offsets *p;
7346 struct ipr_interrupts *t;
7347 void __iomem *base;
7348
7349 ioa_cfg->host = host;
7350 ioa_cfg->pdev = pdev;
7351 ioa_cfg->log_level = ipr_log_level;
7352 ioa_cfg->doorbell = IPR_DOORBELL;
7353 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7354 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7355 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7356 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7357 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7358 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7359 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7360 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7361
7362 INIT_LIST_HEAD(&ioa_cfg->free_q);
7363 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7364 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7365 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7366 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7367 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
7368 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
7369 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7370 ioa_cfg->sdt_state = INACTIVE;
7371 if (ipr_enable_cache)
7372 ioa_cfg->cache_state = CACHE_ENABLED;
7373 else
7374 ioa_cfg->cache_state = CACHE_DISABLED;
7375
7376 ipr_initialize_bus_attr(ioa_cfg);
7377
7378 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7379 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7380 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7381 host->unique_id = host->host_no;
7382 host->max_cmd_len = IPR_MAX_CDB_LEN;
7383 pci_set_drvdata(pdev, ioa_cfg);
7384
7385 p = &ioa_cfg->chip_cfg->regs;
7386 t = &ioa_cfg->regs;
7387 base = ioa_cfg->hdw_dma_regs;
7388
7389 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7390 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7391 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7392 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7393 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7394 t->ioarrin_reg = base + p->ioarrin_reg;
7395 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7396 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7397 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7398 }
7399
7400 /**
7401 * ipr_get_chip_cfg - Find adapter chip configuration
7402 * @dev_id: PCI device id struct
7403 *
7404 * Return value:
7405 * ptr to chip config on success / NULL on failure
7406 **/
7407 static const struct ipr_chip_cfg_t * __devinit
7408 ipr_get_chip_cfg(const struct pci_device_id *dev_id)
7409 {
7410 int i;
7411
7412 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7413 if (ipr_chip[i].vendor == dev_id->vendor &&
7414 ipr_chip[i].device == dev_id->device)
7415 return ipr_chip[i].cfg;
7416 return NULL;
7417 }
7418
7419 /**
7420 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7421 * @pdev: PCI device struct
7422 * @dev_id: PCI device id struct
7423 *
7424 * Return value:
7425 * 0 on success / non-zero on failure
7426 **/
7427 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7428 const struct pci_device_id *dev_id)
7429 {
7430 struct ipr_ioa_cfg *ioa_cfg;
7431 struct Scsi_Host *host;
7432 unsigned long ipr_regs_pci;
7433 void __iomem *ipr_regs;
7434 int rc = PCIBIOS_SUCCESSFUL;
7435 volatile u32 mask, uproc, interrupts;
7436
7437 ENTER;
7438
7439 if ((rc = pci_enable_device(pdev))) {
7440 dev_err(&pdev->dev, "Cannot enable adapter\n");
7441 goto out;
7442 }
7443
7444 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7445
7446 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7447
7448 if (!host) {
7449 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7450 rc = -ENOMEM;
7451 goto out_disable;
7452 }
7453
7454 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7455 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
7456 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7457 sata_port_info.flags, &ipr_sata_ops);
7458
7459 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7460
7461 if (!ioa_cfg->chip_cfg) {
7462 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7463 dev_id->vendor, dev_id->device);
7464 goto out_scsi_host_put;
7465 }
7466
7467 if (ipr_transop_timeout)
7468 ioa_cfg->transop_timeout = ipr_transop_timeout;
7469 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
7470 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
7471 else
7472 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
7473
7474 rc = pci_read_config_byte(pdev, PCI_REVISION_ID, &ioa_cfg->revid);
7475
7476 if (rc != PCIBIOS_SUCCESSFUL) {
7477 dev_err(&pdev->dev, "Failed to read PCI revision ID\n");
7478 rc = -EIO;
7479 goto out_scsi_host_put;
7480 }
7481
7482 ipr_regs_pci = pci_resource_start(pdev, 0);
7483
7484 rc = pci_request_regions(pdev, IPR_NAME);
7485 if (rc < 0) {
7486 dev_err(&pdev->dev,
7487 "Couldn't register memory range of registers\n");
7488 goto out_scsi_host_put;
7489 }
7490
7491 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
7492
7493 if (!ipr_regs) {
7494 dev_err(&pdev->dev,
7495 "Couldn't map memory range of registers\n");
7496 rc = -ENOMEM;
7497 goto out_release_regions;
7498 }
7499
7500 ioa_cfg->hdw_dma_regs = ipr_regs;
7501 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7502 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7503
7504 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7505
7506 pci_set_master(pdev);
7507
7508 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7509 if (rc < 0) {
7510 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7511 goto cleanup_nomem;
7512 }
7513
7514 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7515 ioa_cfg->chip_cfg->cache_line_size);
7516
7517 if (rc != PCIBIOS_SUCCESSFUL) {
7518 dev_err(&pdev->dev, "Write of cache line size failed\n");
7519 rc = -EIO;
7520 goto cleanup_nomem;
7521 }
7522
7523 /* Save away PCI config space for use following IOA reset */
7524 rc = pci_save_state(pdev);
7525
7526 if (rc != PCIBIOS_SUCCESSFUL) {
7527 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7528 rc = -EIO;
7529 goto cleanup_nomem;
7530 }
7531
7532 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7533 goto cleanup_nomem;
7534
7535 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7536 goto cleanup_nomem;
7537
7538 rc = ipr_alloc_mem(ioa_cfg);
7539 if (rc < 0) {
7540 dev_err(&pdev->dev,
7541 "Couldn't allocate enough memory for device driver!\n");
7542 goto cleanup_nomem;
7543 }
7544
7545 /*
7546 * If HRRQ updated interrupt is not masked, or reset alert is set,
7547 * the card is in an unknown state and needs a hard reset
7548 */
7549 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7550 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
7551 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7552 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7553 ioa_cfg->needs_hard_reset = 1;
7554 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
7555 ioa_cfg->needs_hard_reset = 1;
7556 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
7557 ioa_cfg->ioa_unit_checked = 1;
7558
7559 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
7560 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
7561
7562 if (rc) {
7563 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7564 pdev->irq, rc);
7565 goto cleanup_nolog;
7566 }
7567
7568 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
7569 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
7570 ioa_cfg->needs_warm_reset = 1;
7571 ioa_cfg->reset = ipr_reset_slot_reset;
7572 } else
7573 ioa_cfg->reset = ipr_reset_start_bist;
7574
7575 spin_lock(&ipr_driver_lock);
7576 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7577 spin_unlock(&ipr_driver_lock);
7578
7579 LEAVE;
7580 out:
7581 return rc;
7582
7583 cleanup_nolog:
7584 ipr_free_mem(ioa_cfg);
7585 cleanup_nomem:
7586 iounmap(ipr_regs);
7587 out_release_regions:
7588 pci_release_regions(pdev);
7589 out_scsi_host_put:
7590 scsi_host_put(host);
7591 out_disable:
7592 pci_disable_device(pdev);
7593 goto out;
7594 }
7595
7596 /**
7597 * ipr_scan_vsets - Scans for VSET devices
7598 * @ioa_cfg: ioa config struct
7599 *
7600 * Description: Since the VSET resources do not follow SAM in that we can have
7601 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7602 *
7603 * Return value:
7604 * none
7605 **/
7606 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7607 {
7608 int target, lun;
7609
7610 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7611 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7612 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7613 }
7614
7615 /**
7616 * ipr_initiate_ioa_bringdown - Bring down an adapter
7617 * @ioa_cfg: ioa config struct
7618 * @shutdown_type: shutdown type
7619 *
7620 * Description: This function will initiate bringing down the adapter.
7621 * This consists of issuing an IOA shutdown to the adapter
7622 * to flush the cache, and running BIST.
7623 * If the caller needs to wait on the completion of the reset,
7624 * the caller must sleep on the reset_wait_q.
7625 *
7626 * Return value:
7627 * none
7628 **/
7629 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7630 enum ipr_shutdown_type shutdown_type)
7631 {
7632 ENTER;
7633 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7634 ioa_cfg->sdt_state = ABORT_DUMP;
7635 ioa_cfg->reset_retries = 0;
7636 ioa_cfg->in_ioa_bringdown = 1;
7637 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7638 LEAVE;
7639 }
7640
7641 /**
7642 * __ipr_remove - Remove a single adapter
7643 * @pdev: pci device struct
7644 *
7645 * Adapter hot plug remove entry point.
7646 *
7647 * Return value:
7648 * none
7649 **/
7650 static void __ipr_remove(struct pci_dev *pdev)
7651 {
7652 unsigned long host_lock_flags = 0;
7653 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7654 ENTER;
7655
7656 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7657 while(ioa_cfg->in_reset_reload) {
7658 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7659 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7660 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7661 }
7662
7663 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7664
7665 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7666 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7667 flush_scheduled_work();
7668 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7669
7670 spin_lock(&ipr_driver_lock);
7671 list_del(&ioa_cfg->queue);
7672 spin_unlock(&ipr_driver_lock);
7673
7674 if (ioa_cfg->sdt_state == ABORT_DUMP)
7675 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7676 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7677
7678 ipr_free_all_resources(ioa_cfg);
7679
7680 LEAVE;
7681 }
7682
7683 /**
7684 * ipr_remove - IOA hot plug remove entry point
7685 * @pdev: pci device struct
7686 *
7687 * Adapter hot plug remove entry point.
7688 *
7689 * Return value:
7690 * none
7691 **/
7692 static void ipr_remove(struct pci_dev *pdev)
7693 {
7694 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7695
7696 ENTER;
7697
7698 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7699 &ipr_trace_attr);
7700 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7701 &ipr_dump_attr);
7702 scsi_remove_host(ioa_cfg->host);
7703
7704 __ipr_remove(pdev);
7705
7706 LEAVE;
7707 }
7708
7709 /**
7710 * ipr_probe - Adapter hot plug add entry point
7711 *
7712 * Return value:
7713 * 0 on success / non-zero on failure
7714 **/
7715 static int __devinit ipr_probe(struct pci_dev *pdev,
7716 const struct pci_device_id *dev_id)
7717 {
7718 struct ipr_ioa_cfg *ioa_cfg;
7719 int rc;
7720
7721 rc = ipr_probe_ioa(pdev, dev_id);
7722
7723 if (rc)
7724 return rc;
7725
7726 ioa_cfg = pci_get_drvdata(pdev);
7727 rc = ipr_probe_ioa_part2(ioa_cfg);
7728
7729 if (rc) {
7730 __ipr_remove(pdev);
7731 return rc;
7732 }
7733
7734 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7735
7736 if (rc) {
7737 __ipr_remove(pdev);
7738 return rc;
7739 }
7740
7741 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7742 &ipr_trace_attr);
7743
7744 if (rc) {
7745 scsi_remove_host(ioa_cfg->host);
7746 __ipr_remove(pdev);
7747 return rc;
7748 }
7749
7750 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7751 &ipr_dump_attr);
7752
7753 if (rc) {
7754 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7755 &ipr_trace_attr);
7756 scsi_remove_host(ioa_cfg->host);
7757 __ipr_remove(pdev);
7758 return rc;
7759 }
7760
7761 scsi_scan_host(ioa_cfg->host);
7762 ipr_scan_vsets(ioa_cfg);
7763 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7764 ioa_cfg->allow_ml_add_del = 1;
7765 ioa_cfg->host->max_channel = IPR_VSET_BUS;
7766 schedule_work(&ioa_cfg->work_q);
7767 return 0;
7768 }
7769
7770 /**
7771 * ipr_shutdown - Shutdown handler.
7772 * @pdev: pci device struct
7773 *
7774 * This function is invoked upon system shutdown/reboot. It will issue
7775 * an adapter shutdown to the adapter to flush the write cache.
7776 *
7777 * Return value:
7778 * none
7779 **/
7780 static void ipr_shutdown(struct pci_dev *pdev)
7781 {
7782 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7783 unsigned long lock_flags = 0;
7784
7785 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7786 while(ioa_cfg->in_reset_reload) {
7787 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7788 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7789 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7790 }
7791
7792 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7793 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7794 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7795 }
7796
7797 static struct pci_device_id ipr_pci_table[] __devinitdata = {
7798 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7799 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
7800 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7801 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
7802 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7803 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
7804 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7805 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
7806 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7807 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
7808 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7809 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
7810 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7811 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
7812 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7813 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
7814 IPR_USE_LONG_TRANSOP_TIMEOUT },
7815 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7816 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7817 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7818 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7819 IPR_USE_LONG_TRANSOP_TIMEOUT },
7820 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7821 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7822 IPR_USE_LONG_TRANSOP_TIMEOUT },
7823 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7824 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7825 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7826 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7827 IPR_USE_LONG_TRANSOP_TIMEOUT},
7828 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7829 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7830 IPR_USE_LONG_TRANSOP_TIMEOUT },
7831 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7832 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
7833 IPR_USE_LONG_TRANSOP_TIMEOUT },
7834 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7835 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0,
7836 IPR_USE_LONG_TRANSOP_TIMEOUT },
7837 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7838 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
7839 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7840 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
7841 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
7842 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
7843 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
7844 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7845 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
7846 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7847 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
7848 IPR_USE_LONG_TRANSOP_TIMEOUT },
7849 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7850 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
7851 IPR_USE_LONG_TRANSOP_TIMEOUT },
7852 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E,
7853 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0,
7854 IPR_USE_LONG_TRANSOP_TIMEOUT },
7855 { }
7856 };
7857 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7858
7859 static struct pci_error_handlers ipr_err_handler = {
7860 .error_detected = ipr_pci_error_detected,
7861 .slot_reset = ipr_pci_slot_reset,
7862 };
7863
7864 static struct pci_driver ipr_driver = {
7865 .name = IPR_NAME,
7866 .id_table = ipr_pci_table,
7867 .probe = ipr_probe,
7868 .remove = ipr_remove,
7869 .shutdown = ipr_shutdown,
7870 .err_handler = &ipr_err_handler,
7871 .dynids.use_driver_data = 1
7872 };
7873
7874 /**
7875 * ipr_init - Module entry point
7876 *
7877 * Return value:
7878 * 0 on success / negative value on failure
7879 **/
7880 static int __init ipr_init(void)
7881 {
7882 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7883 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7884
7885 return pci_register_driver(&ipr_driver);
7886 }
7887
7888 /**
7889 * ipr_exit - Module unload
7890 *
7891 * Module unload entry point.
7892 *
7893 * Return value:
7894 * none
7895 **/
7896 static void __exit ipr_exit(void)
7897 {
7898 pci_unregister_driver(&ipr_driver);
7899 }
7900
7901 module_init(ipr_init);
7902 module_exit(ipr_exit);
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