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PCI: Change all drivers to use pci_device->revision
[firewire-audio.git] / drivers / scsi / ipr.c
blob81330712048c08a52a1871089290a1d6d225ca0b
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_unmap_sglist - Unmap scatterlist if mapped
544 * @ioa_cfg: ioa config struct
545 * @ipr_cmd: ipr command struct
546 *
547 * Return value:
548 * nothing
549 **/
550 static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg,
551 struct ipr_cmnd *ipr_cmd)
552 {
553 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
554
555 if (ipr_cmd->dma_use_sg) {
556 if (scsi_cmd->use_sg > 0) {
557 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer,
558 scsi_cmd->use_sg,
559 scsi_cmd->sc_data_direction);
560 } else {
561 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle,
562 scsi_cmd->request_bufflen,
563 scsi_cmd->sc_data_direction);
564 }
565 }
566 }
567
568 /**
569 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
570 * @ioa_cfg: ioa config struct
571 * @clr_ints: interrupts to clear
572 *
573 * This function masks all interrupts on the adapter, then clears the
574 * interrupts specified in the mask
575 *
576 * Return value:
577 * none
578 **/
579 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
580 u32 clr_ints)
581 {
582 volatile u32 int_reg;
583
584 /* Stop new interrupts */
585 ioa_cfg->allow_interrupts = 0;
586
587 /* Set interrupt mask to stop all new interrupts */
588 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
589
590 /* Clear any pending interrupts */
591 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
592 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
593 }
594
595 /**
596 * ipr_save_pcix_cmd_reg - Save PCI-X command register
597 * @ioa_cfg: ioa config struct
598 *
599 * Return value:
600 * 0 on success / -EIO on failure
601 **/
602 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
603 {
604 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
605
606 if (pcix_cmd_reg == 0)
607 return 0;
608
609 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
610 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
611 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
612 return -EIO;
613 }
614
615 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
616 return 0;
617 }
618
619 /**
620 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
621 * @ioa_cfg: ioa config struct
622 *
623 * Return value:
624 * 0 on success / -EIO on failure
625 **/
626 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
627 {
628 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
629
630 if (pcix_cmd_reg) {
631 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
632 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
633 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
634 return -EIO;
635 }
636 }
637
638 return 0;
639 }
640
641 /**
642 * ipr_sata_eh_done - done function for aborted SATA commands
643 * @ipr_cmd: ipr command struct
644 *
645 * This function is invoked for ops generated to SATA
646 * devices which are being aborted.
647 *
648 * Return value:
649 * none
650 **/
651 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
652 {
653 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
654 struct ata_queued_cmd *qc = ipr_cmd->qc;
655 struct ipr_sata_port *sata_port = qc->ap->private_data;
656
657 qc->err_mask |= AC_ERR_OTHER;
658 sata_port->ioasa.status |= ATA_BUSY;
659 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
660 ata_qc_complete(qc);
661 }
662
663 /**
664 * ipr_scsi_eh_done - mid-layer done function for aborted ops
665 * @ipr_cmd: ipr command struct
666 *
667 * This function is invoked by the interrupt handler for
668 * ops generated by the SCSI mid-layer which are being aborted.
669 *
670 * Return value:
671 * none
672 **/
673 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
674 {
675 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
676 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
677
678 scsi_cmd->result |= (DID_ERROR << 16);
679
680 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
681 scsi_cmd->scsi_done(scsi_cmd);
682 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
683 }
684
685 /**
686 * ipr_fail_all_ops - Fails all outstanding ops.
687 * @ioa_cfg: ioa config struct
688 *
689 * This function fails all outstanding ops.
690 *
691 * Return value:
692 * none
693 **/
694 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
695 {
696 struct ipr_cmnd *ipr_cmd, *temp;
697
698 ENTER;
699 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
700 list_del(&ipr_cmd->queue);
701
702 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
703 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
704
705 if (ipr_cmd->scsi_cmd)
706 ipr_cmd->done = ipr_scsi_eh_done;
707 else if (ipr_cmd->qc)
708 ipr_cmd->done = ipr_sata_eh_done;
709
710 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
711 del_timer(&ipr_cmd->timer);
712 ipr_cmd->done(ipr_cmd);
713 }
714
715 LEAVE;
716 }
717
718 /**
719 * ipr_do_req - Send driver initiated requests.
720 * @ipr_cmd: ipr command struct
721 * @done: done function
722 * @timeout_func: timeout function
723 * @timeout: timeout value
724 *
725 * This function sends the specified command to the adapter with the
726 * timeout given. The done function is invoked on command completion.
727 *
728 * Return value:
729 * none
730 **/
731 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
732 void (*done) (struct ipr_cmnd *),
733 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
734 {
735 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
736
737 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
738
739 ipr_cmd->done = done;
740
741 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
742 ipr_cmd->timer.expires = jiffies + timeout;
743 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
744
745 add_timer(&ipr_cmd->timer);
746
747 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
748
749 mb();
750 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
751 ioa_cfg->regs.ioarrin_reg);
752 }
753
754 /**
755 * ipr_internal_cmd_done - Op done function for an internally generated op.
756 * @ipr_cmd: ipr command struct
757 *
758 * This function is the op done function for an internally generated,
759 * blocking op. It simply wakes the sleeping thread.
760 *
761 * Return value:
762 * none
763 **/
764 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
765 {
766 if (ipr_cmd->sibling)
767 ipr_cmd->sibling = NULL;
768 else
769 complete(&ipr_cmd->completion);
770 }
771
772 /**
773 * ipr_send_blocking_cmd - Send command and sleep on its completion.
774 * @ipr_cmd: ipr command struct
775 * @timeout_func: function to invoke if command times out
776 * @timeout: timeout
777 *
778 * Return value:
779 * none
780 **/
781 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
782 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
783 u32 timeout)
784 {
785 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
786
787 init_completion(&ipr_cmd->completion);
788 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
789
790 spin_unlock_irq(ioa_cfg->host->host_lock);
791 wait_for_completion(&ipr_cmd->completion);
792 spin_lock_irq(ioa_cfg->host->host_lock);
793 }
794
795 /**
796 * ipr_send_hcam - Send an HCAM to the adapter.
797 * @ioa_cfg: ioa config struct
798 * @type: HCAM type
799 * @hostrcb: hostrcb struct
800 *
801 * This function will send a Host Controlled Async command to the adapter.
802 * If HCAMs are currently not allowed to be issued to the adapter, it will
803 * place the hostrcb on the free queue.
804 *
805 * Return value:
806 * none
807 **/
808 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
809 struct ipr_hostrcb *hostrcb)
810 {
811 struct ipr_cmnd *ipr_cmd;
812 struct ipr_ioarcb *ioarcb;
813
814 if (ioa_cfg->allow_cmds) {
815 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
816 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
817 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
818
819 ipr_cmd->u.hostrcb = hostrcb;
820 ioarcb = &ipr_cmd->ioarcb;
821
822 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
823 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
824 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
825 ioarcb->cmd_pkt.cdb[1] = type;
826 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
827 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
828
829 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
830 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
831 ipr_cmd->ioadl[0].flags_and_data_len =
832 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
833 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
834
835 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
836 ipr_cmd->done = ipr_process_ccn;
837 else
838 ipr_cmd->done = ipr_process_error;
839
840 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
841
842 mb();
843 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
844 ioa_cfg->regs.ioarrin_reg);
845 } else {
846 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
847 }
848 }
849
850 /**
851 * ipr_init_res_entry - Initialize a resource entry struct.
852 * @res: resource entry struct
853 *
854 * Return value:
855 * none
856 **/
857 static void ipr_init_res_entry(struct ipr_resource_entry *res)
858 {
859 res->needs_sync_complete = 0;
860 res->in_erp = 0;
861 res->add_to_ml = 0;
862 res->del_from_ml = 0;
863 res->resetting_device = 0;
864 res->sdev = NULL;
865 res->sata_port = NULL;
866 }
867
868 /**
869 * ipr_handle_config_change - Handle a config change from the adapter
870 * @ioa_cfg: ioa config struct
871 * @hostrcb: hostrcb
872 *
873 * Return value:
874 * none
875 **/
876 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
877 struct ipr_hostrcb *hostrcb)
878 {
879 struct ipr_resource_entry *res = NULL;
880 struct ipr_config_table_entry *cfgte;
881 u32 is_ndn = 1;
882
883 cfgte = &hostrcb->hcam.u.ccn.cfgte;
884
885 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
886 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
887 sizeof(cfgte->res_addr))) {
888 is_ndn = 0;
889 break;
890 }
891 }
892
893 if (is_ndn) {
894 if (list_empty(&ioa_cfg->free_res_q)) {
895 ipr_send_hcam(ioa_cfg,
896 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
897 hostrcb);
898 return;
899 }
900
901 res = list_entry(ioa_cfg->free_res_q.next,
902 struct ipr_resource_entry, queue);
903
904 list_del(&res->queue);
905 ipr_init_res_entry(res);
906 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
907 }
908
909 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
910
911 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
912 if (res->sdev) {
913 res->del_from_ml = 1;
914 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
915 if (ioa_cfg->allow_ml_add_del)
916 schedule_work(&ioa_cfg->work_q);
917 } else
918 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
919 } else if (!res->sdev) {
920 res->add_to_ml = 1;
921 if (ioa_cfg->allow_ml_add_del)
922 schedule_work(&ioa_cfg->work_q);
923 }
924
925 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
926 }
927
928 /**
929 * ipr_process_ccn - Op done function for a CCN.
930 * @ipr_cmd: ipr command struct
931 *
932 * This function is the op done function for a configuration
933 * change notification host controlled async from the adapter.
934 *
935 * Return value:
936 * none
937 **/
938 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
939 {
940 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
941 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
942 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
943
944 list_del(&hostrcb->queue);
945 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
946
947 if (ioasc) {
948 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
949 dev_err(&ioa_cfg->pdev->dev,
950 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
951
952 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
953 } else {
954 ipr_handle_config_change(ioa_cfg, hostrcb);
955 }
956 }
957
958 /**
959 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
960 * @i: index into buffer
961 * @buf: string to modify
962 *
963 * This function will strip all trailing whitespace, pad the end
964 * of the string with a single space, and NULL terminate the string.
965 *
966 * Return value:
967 * new length of string
968 **/
969 static int strip_and_pad_whitespace(int i, char *buf)
970 {
971 while (i && buf[i] == ' ')
972 i--;
973 buf[i+1] = ' ';
974 buf[i+2] = '\0';
975 return i + 2;
976 }
977
978 /**
979 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
980 * @prefix: string to print at start of printk
981 * @hostrcb: hostrcb pointer
982 * @vpd: vendor/product id/sn struct
983 *
984 * Return value:
985 * none
986 **/
987 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
988 struct ipr_vpd *vpd)
989 {
990 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
991 int i = 0;
992
993 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
994 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
995
996 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
997 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
998
999 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1000 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1001
1002 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1003 }
1004
1005 /**
1006 * ipr_log_vpd - Log the passed VPD to the error log.
1007 * @vpd: vendor/product id/sn struct
1008 *
1009 * Return value:
1010 * none
1011 **/
1012 static void ipr_log_vpd(struct ipr_vpd *vpd)
1013 {
1014 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1015 + IPR_SERIAL_NUM_LEN];
1016
1017 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1018 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1019 IPR_PROD_ID_LEN);
1020 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1021 ipr_err("Vendor/Product ID: %s\n", buffer);
1022
1023 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1024 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1025 ipr_err(" Serial Number: %s\n", buffer);
1026 }
1027
1028 /**
1029 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1030 * @prefix: string to print at start of printk
1031 * @hostrcb: hostrcb pointer
1032 * @vpd: vendor/product id/sn/wwn struct
1033 *
1034 * Return value:
1035 * none
1036 **/
1037 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1038 struct ipr_ext_vpd *vpd)
1039 {
1040 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1041 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1042 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1043 }
1044
1045 /**
1046 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1047 * @vpd: vendor/product id/sn/wwn struct
1048 *
1049 * Return value:
1050 * none
1051 **/
1052 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1053 {
1054 ipr_log_vpd(&vpd->vpd);
1055 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1056 be32_to_cpu(vpd->wwid[1]));
1057 }
1058
1059 /**
1060 * ipr_log_enhanced_cache_error - Log a cache error.
1061 * @ioa_cfg: ioa config struct
1062 * @hostrcb: hostrcb struct
1063 *
1064 * Return value:
1065 * none
1066 **/
1067 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1068 struct ipr_hostrcb *hostrcb)
1069 {
1070 struct ipr_hostrcb_type_12_error *error =
1071 &hostrcb->hcam.u.error.u.type_12_error;
1072
1073 ipr_err("-----Current Configuration-----\n");
1074 ipr_err("Cache Directory Card Information:\n");
1075 ipr_log_ext_vpd(&error->ioa_vpd);
1076 ipr_err("Adapter Card Information:\n");
1077 ipr_log_ext_vpd(&error->cfc_vpd);
1078
1079 ipr_err("-----Expected Configuration-----\n");
1080 ipr_err("Cache Directory Card Information:\n");
1081 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1082 ipr_err("Adapter Card Information:\n");
1083 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1084
1085 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1086 be32_to_cpu(error->ioa_data[0]),
1087 be32_to_cpu(error->ioa_data[1]),
1088 be32_to_cpu(error->ioa_data[2]));
1089 }
1090
1091 /**
1092 * ipr_log_cache_error - Log a cache error.
1093 * @ioa_cfg: ioa config struct
1094 * @hostrcb: hostrcb struct
1095 *
1096 * Return value:
1097 * none
1098 **/
1099 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1100 struct ipr_hostrcb *hostrcb)
1101 {
1102 struct ipr_hostrcb_type_02_error *error =
1103 &hostrcb->hcam.u.error.u.type_02_error;
1104
1105 ipr_err("-----Current Configuration-----\n");
1106 ipr_err("Cache Directory Card Information:\n");
1107 ipr_log_vpd(&error->ioa_vpd);
1108 ipr_err("Adapter Card Information:\n");
1109 ipr_log_vpd(&error->cfc_vpd);
1110
1111 ipr_err("-----Expected Configuration-----\n");
1112 ipr_err("Cache Directory Card Information:\n");
1113 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1114 ipr_err("Adapter Card Information:\n");
1115 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1116
1117 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1118 be32_to_cpu(error->ioa_data[0]),
1119 be32_to_cpu(error->ioa_data[1]),
1120 be32_to_cpu(error->ioa_data[2]));
1121 }
1122
1123 /**
1124 * ipr_log_enhanced_config_error - Log a configuration error.
1125 * @ioa_cfg: ioa config struct
1126 * @hostrcb: hostrcb struct
1127 *
1128 * Return value:
1129 * none
1130 **/
1131 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1132 struct ipr_hostrcb *hostrcb)
1133 {
1134 int errors_logged, i;
1135 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1136 struct ipr_hostrcb_type_13_error *error;
1137
1138 error = &hostrcb->hcam.u.error.u.type_13_error;
1139 errors_logged = be32_to_cpu(error->errors_logged);
1140
1141 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1142 be32_to_cpu(error->errors_detected), errors_logged);
1143
1144 dev_entry = error->dev;
1145
1146 for (i = 0; i < errors_logged; i++, dev_entry++) {
1147 ipr_err_separator;
1148
1149 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1150 ipr_log_ext_vpd(&dev_entry->vpd);
1151
1152 ipr_err("-----New Device Information-----\n");
1153 ipr_log_ext_vpd(&dev_entry->new_vpd);
1154
1155 ipr_err("Cache Directory Card Information:\n");
1156 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1157
1158 ipr_err("Adapter Card Information:\n");
1159 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1160 }
1161 }
1162
1163 /**
1164 * ipr_log_config_error - Log a configuration error.
1165 * @ioa_cfg: ioa config struct
1166 * @hostrcb: hostrcb struct
1167 *
1168 * Return value:
1169 * none
1170 **/
1171 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1172 struct ipr_hostrcb *hostrcb)
1173 {
1174 int errors_logged, i;
1175 struct ipr_hostrcb_device_data_entry *dev_entry;
1176 struct ipr_hostrcb_type_03_error *error;
1177
1178 error = &hostrcb->hcam.u.error.u.type_03_error;
1179 errors_logged = be32_to_cpu(error->errors_logged);
1180
1181 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1182 be32_to_cpu(error->errors_detected), errors_logged);
1183
1184 dev_entry = error->dev;
1185
1186 for (i = 0; i < errors_logged; i++, dev_entry++) {
1187 ipr_err_separator;
1188
1189 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1190 ipr_log_vpd(&dev_entry->vpd);
1191
1192 ipr_err("-----New Device Information-----\n");
1193 ipr_log_vpd(&dev_entry->new_vpd);
1194
1195 ipr_err("Cache Directory Card Information:\n");
1196 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1197
1198 ipr_err("Adapter Card Information:\n");
1199 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1200
1201 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1202 be32_to_cpu(dev_entry->ioa_data[0]),
1203 be32_to_cpu(dev_entry->ioa_data[1]),
1204 be32_to_cpu(dev_entry->ioa_data[2]),
1205 be32_to_cpu(dev_entry->ioa_data[3]),
1206 be32_to_cpu(dev_entry->ioa_data[4]));
1207 }
1208 }
1209
1210 /**
1211 * ipr_log_enhanced_array_error - Log an array configuration error.
1212 * @ioa_cfg: ioa config struct
1213 * @hostrcb: hostrcb struct
1214 *
1215 * Return value:
1216 * none
1217 **/
1218 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1219 struct ipr_hostrcb *hostrcb)
1220 {
1221 int i, num_entries;
1222 struct ipr_hostrcb_type_14_error *error;
1223 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1224 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1225
1226 error = &hostrcb->hcam.u.error.u.type_14_error;
1227
1228 ipr_err_separator;
1229
1230 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1231 error->protection_level,
1232 ioa_cfg->host->host_no,
1233 error->last_func_vset_res_addr.bus,
1234 error->last_func_vset_res_addr.target,
1235 error->last_func_vset_res_addr.lun);
1236
1237 ipr_err_separator;
1238
1239 array_entry = error->array_member;
1240 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1241 sizeof(error->array_member));
1242
1243 for (i = 0; i < num_entries; i++, array_entry++) {
1244 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1245 continue;
1246
1247 if (be32_to_cpu(error->exposed_mode_adn) == i)
1248 ipr_err("Exposed Array Member %d:\n", i);
1249 else
1250 ipr_err("Array Member %d:\n", i);
1251
1252 ipr_log_ext_vpd(&array_entry->vpd);
1253 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1254 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1255 "Expected Location");
1256
1257 ipr_err_separator;
1258 }
1259 }
1260
1261 /**
1262 * ipr_log_array_error - Log an array configuration error.
1263 * @ioa_cfg: ioa config struct
1264 * @hostrcb: hostrcb struct
1265 *
1266 * Return value:
1267 * none
1268 **/
1269 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1270 struct ipr_hostrcb *hostrcb)
1271 {
1272 int i;
1273 struct ipr_hostrcb_type_04_error *error;
1274 struct ipr_hostrcb_array_data_entry *array_entry;
1275 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1276
1277 error = &hostrcb->hcam.u.error.u.type_04_error;
1278
1279 ipr_err_separator;
1280
1281 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1282 error->protection_level,
1283 ioa_cfg->host->host_no,
1284 error->last_func_vset_res_addr.bus,
1285 error->last_func_vset_res_addr.target,
1286 error->last_func_vset_res_addr.lun);
1287
1288 ipr_err_separator;
1289
1290 array_entry = error->array_member;
1291
1292 for (i = 0; i < 18; i++) {
1293 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1294 continue;
1295
1296 if (be32_to_cpu(error->exposed_mode_adn) == i)
1297 ipr_err("Exposed Array Member %d:\n", i);
1298 else
1299 ipr_err("Array Member %d:\n", i);
1300
1301 ipr_log_vpd(&array_entry->vpd);
1302
1303 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1304 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1305 "Expected Location");
1306
1307 ipr_err_separator;
1308
1309 if (i == 9)
1310 array_entry = error->array_member2;
1311 else
1312 array_entry++;
1313 }
1314 }
1315
1316 /**
1317 * ipr_log_hex_data - Log additional hex IOA error data.
1318 * @ioa_cfg: ioa config struct
1319 * @data: IOA error data
1320 * @len: data length
1321 *
1322 * Return value:
1323 * none
1324 **/
1325 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1326 {
1327 int i;
1328
1329 if (len == 0)
1330 return;
1331
1332 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1333 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1334
1335 for (i = 0; i < len / 4; i += 4) {
1336 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1337 be32_to_cpu(data[i]),
1338 be32_to_cpu(data[i+1]),
1339 be32_to_cpu(data[i+2]),
1340 be32_to_cpu(data[i+3]));
1341 }
1342 }
1343
1344 /**
1345 * ipr_log_enhanced_dual_ioa_error - Log an enhanced 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_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1353 struct ipr_hostrcb *hostrcb)
1354 {
1355 struct ipr_hostrcb_type_17_error *error;
1356
1357 error = &hostrcb->hcam.u.error.u.type_17_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_ext_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_17_error, data)));
1368 }
1369
1370 /**
1371 * ipr_log_dual_ioa_error - Log a dual adapter error.
1372 * @ioa_cfg: ioa config struct
1373 * @hostrcb: hostrcb struct
1374 *
1375 * Return value:
1376 * none
1377 **/
1378 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1379 struct ipr_hostrcb *hostrcb)
1380 {
1381 struct ipr_hostrcb_type_07_error *error;
1382
1383 error = &hostrcb->hcam.u.error.u.type_07_error;
1384 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1385 strstrip(error->failure_reason);
1386
1387 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1388 be32_to_cpu(hostrcb->hcam.u.error.prc));
1389 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1390 ipr_log_hex_data(ioa_cfg, error->data,
1391 be32_to_cpu(hostrcb->hcam.length) -
1392 (offsetof(struct ipr_hostrcb_error, u) +
1393 offsetof(struct ipr_hostrcb_type_07_error, data)));
1394 }
1395
1396 static const struct {
1397 u8 active;
1398 char *desc;
1399 } path_active_desc[] = {
1400 { IPR_PATH_NO_INFO, "Path" },
1401 { IPR_PATH_ACTIVE, "Active path" },
1402 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1403 };
1404
1405 static const struct {
1406 u8 state;
1407 char *desc;
1408 } path_state_desc[] = {
1409 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1410 { IPR_PATH_HEALTHY, "is healthy" },
1411 { IPR_PATH_DEGRADED, "is degraded" },
1412 { IPR_PATH_FAILED, "is failed" }
1413 };
1414
1415 /**
1416 * ipr_log_fabric_path - Log a fabric path error
1417 * @hostrcb: hostrcb struct
1418 * @fabric: fabric descriptor
1419 *
1420 * Return value:
1421 * none
1422 **/
1423 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1424 struct ipr_hostrcb_fabric_desc *fabric)
1425 {
1426 int i, j;
1427 u8 path_state = fabric->path_state;
1428 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1429 u8 state = path_state & IPR_PATH_STATE_MASK;
1430
1431 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1432 if (path_active_desc[i].active != active)
1433 continue;
1434
1435 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1436 if (path_state_desc[j].state != state)
1437 continue;
1438
1439 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1440 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1441 path_active_desc[i].desc, path_state_desc[j].desc,
1442 fabric->ioa_port);
1443 } else if (fabric->cascaded_expander == 0xff) {
1444 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1445 path_active_desc[i].desc, path_state_desc[j].desc,
1446 fabric->ioa_port, fabric->phy);
1447 } else if (fabric->phy == 0xff) {
1448 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1449 path_active_desc[i].desc, path_state_desc[j].desc,
1450 fabric->ioa_port, fabric->cascaded_expander);
1451 } else {
1452 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1453 path_active_desc[i].desc, path_state_desc[j].desc,
1454 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1455 }
1456 return;
1457 }
1458 }
1459
1460 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1461 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1462 }
1463
1464 static const struct {
1465 u8 type;
1466 char *desc;
1467 } path_type_desc[] = {
1468 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1469 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1470 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1471 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1472 };
1473
1474 static const struct {
1475 u8 status;
1476 char *desc;
1477 } path_status_desc[] = {
1478 { IPR_PATH_CFG_NO_PROB, "Functional" },
1479 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1480 { IPR_PATH_CFG_FAILED, "Failed" },
1481 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1482 { IPR_PATH_NOT_DETECTED, "Missing" },
1483 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1484 };
1485
1486 static const char *link_rate[] = {
1487 "unknown",
1488 "disabled",
1489 "phy reset problem",
1490 "spinup hold",
1491 "port selector",
1492 "unknown",
1493 "unknown",
1494 "unknown",
1495 "1.5Gbps",
1496 "3.0Gbps",
1497 "unknown",
1498 "unknown",
1499 "unknown",
1500 "unknown",
1501 "unknown",
1502 "unknown"
1503 };
1504
1505 /**
1506 * ipr_log_path_elem - Log a fabric path element.
1507 * @hostrcb: hostrcb struct
1508 * @cfg: fabric path element struct
1509 *
1510 * Return value:
1511 * none
1512 **/
1513 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1514 struct ipr_hostrcb_config_element *cfg)
1515 {
1516 int i, j;
1517 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1518 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1519
1520 if (type == IPR_PATH_CFG_NOT_EXIST)
1521 return;
1522
1523 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1524 if (path_type_desc[i].type != type)
1525 continue;
1526
1527 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
1528 if (path_status_desc[j].status != status)
1529 continue;
1530
1531 if (type == IPR_PATH_CFG_IOA_PORT) {
1532 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
1533 path_status_desc[j].desc, path_type_desc[i].desc,
1534 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1535 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1536 } else {
1537 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
1538 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
1539 path_status_desc[j].desc, path_type_desc[i].desc,
1540 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1541 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1542 } else if (cfg->cascaded_expander == 0xff) {
1543 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
1544 "WWN=%08X%08X\n", path_status_desc[j].desc,
1545 path_type_desc[i].desc, cfg->phy,
1546 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1547 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1548 } else if (cfg->phy == 0xff) {
1549 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
1550 "WWN=%08X%08X\n", path_status_desc[j].desc,
1551 path_type_desc[i].desc, cfg->cascaded_expander,
1552 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1553 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1554 } else {
1555 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
1556 "WWN=%08X%08X\n", path_status_desc[j].desc,
1557 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
1558 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1559 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1560 }
1561 }
1562 return;
1563 }
1564 }
1565
1566 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
1567 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
1568 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1569 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1570 }
1571
1572 /**
1573 * ipr_log_fabric_error - Log a fabric error.
1574 * @ioa_cfg: ioa config struct
1575 * @hostrcb: hostrcb struct
1576 *
1577 * Return value:
1578 * none
1579 **/
1580 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
1581 struct ipr_hostrcb *hostrcb)
1582 {
1583 struct ipr_hostrcb_type_20_error *error;
1584 struct ipr_hostrcb_fabric_desc *fabric;
1585 struct ipr_hostrcb_config_element *cfg;
1586 int i, add_len;
1587
1588 error = &hostrcb->hcam.u.error.u.type_20_error;
1589 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1590 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
1591
1592 add_len = be32_to_cpu(hostrcb->hcam.length) -
1593 (offsetof(struct ipr_hostrcb_error, u) +
1594 offsetof(struct ipr_hostrcb_type_20_error, desc));
1595
1596 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
1597 ipr_log_fabric_path(hostrcb, fabric);
1598 for_each_fabric_cfg(fabric, cfg)
1599 ipr_log_path_elem(hostrcb, cfg);
1600
1601 add_len -= be16_to_cpu(fabric->length);
1602 fabric = (struct ipr_hostrcb_fabric_desc *)
1603 ((unsigned long)fabric + be16_to_cpu(fabric->length));
1604 }
1605
1606 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
1607 }
1608
1609 /**
1610 * ipr_log_generic_error - Log an adapter error.
1611 * @ioa_cfg: ioa config struct
1612 * @hostrcb: hostrcb struct
1613 *
1614 * Return value:
1615 * none
1616 **/
1617 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1618 struct ipr_hostrcb *hostrcb)
1619 {
1620 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
1621 be32_to_cpu(hostrcb->hcam.length));
1622 }
1623
1624 /**
1625 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1626 * @ioasc: IOASC
1627 *
1628 * This function will return the index of into the ipr_error_table
1629 * for the specified IOASC. If the IOASC is not in the table,
1630 * 0 will be returned, which points to the entry used for unknown errors.
1631 *
1632 * Return value:
1633 * index into the ipr_error_table
1634 **/
1635 static u32 ipr_get_error(u32 ioasc)
1636 {
1637 int i;
1638
1639 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1640 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
1641 return i;
1642
1643 return 0;
1644 }
1645
1646 /**
1647 * ipr_handle_log_data - Log an adapter error.
1648 * @ioa_cfg: ioa config struct
1649 * @hostrcb: hostrcb struct
1650 *
1651 * This function logs an adapter error to the system.
1652 *
1653 * Return value:
1654 * none
1655 **/
1656 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1657 struct ipr_hostrcb *hostrcb)
1658 {
1659 u32 ioasc;
1660 int error_index;
1661
1662 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1663 return;
1664
1665 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1666 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1667
1668 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1669
1670 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1671 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1672 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1673 scsi_report_bus_reset(ioa_cfg->host,
1674 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1675 }
1676
1677 error_index = ipr_get_error(ioasc);
1678
1679 if (!ipr_error_table[error_index].log_hcam)
1680 return;
1681
1682 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
1683
1684 /* Set indication we have logged an error */
1685 ioa_cfg->errors_logged++;
1686
1687 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
1688 return;
1689 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1690 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1691
1692 switch (hostrcb->hcam.overlay_id) {
1693 case IPR_HOST_RCB_OVERLAY_ID_2:
1694 ipr_log_cache_error(ioa_cfg, hostrcb);
1695 break;
1696 case IPR_HOST_RCB_OVERLAY_ID_3:
1697 ipr_log_config_error(ioa_cfg, hostrcb);
1698 break;
1699 case IPR_HOST_RCB_OVERLAY_ID_4:
1700 case IPR_HOST_RCB_OVERLAY_ID_6:
1701 ipr_log_array_error(ioa_cfg, hostrcb);
1702 break;
1703 case IPR_HOST_RCB_OVERLAY_ID_7:
1704 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1705 break;
1706 case IPR_HOST_RCB_OVERLAY_ID_12:
1707 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1708 break;
1709 case IPR_HOST_RCB_OVERLAY_ID_13:
1710 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1711 break;
1712 case IPR_HOST_RCB_OVERLAY_ID_14:
1713 case IPR_HOST_RCB_OVERLAY_ID_16:
1714 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1715 break;
1716 case IPR_HOST_RCB_OVERLAY_ID_17:
1717 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1718 break;
1719 case IPR_HOST_RCB_OVERLAY_ID_20:
1720 ipr_log_fabric_error(ioa_cfg, hostrcb);
1721 break;
1722 case IPR_HOST_RCB_OVERLAY_ID_1:
1723 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1724 default:
1725 ipr_log_generic_error(ioa_cfg, hostrcb);
1726 break;
1727 }
1728 }
1729
1730 /**
1731 * ipr_process_error - Op done function for an adapter error log.
1732 * @ipr_cmd: ipr command struct
1733 *
1734 * This function is the op done function for an error log host
1735 * controlled async from the adapter. It will log the error and
1736 * send the HCAM back to the adapter.
1737 *
1738 * Return value:
1739 * none
1740 **/
1741 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1742 {
1743 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1744 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1745 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1746 u32 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1747
1748 list_del(&hostrcb->queue);
1749 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1750
1751 if (!ioasc) {
1752 ipr_handle_log_data(ioa_cfg, hostrcb);
1753 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
1754 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
1755 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1756 dev_err(&ioa_cfg->pdev->dev,
1757 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1758 }
1759
1760 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1761 }
1762
1763 /**
1764 * ipr_timeout - An internally generated op has timed out.
1765 * @ipr_cmd: ipr command struct
1766 *
1767 * This function blocks host requests and initiates an
1768 * adapter reset.
1769 *
1770 * Return value:
1771 * none
1772 **/
1773 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1774 {
1775 unsigned long lock_flags = 0;
1776 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1777
1778 ENTER;
1779 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1780
1781 ioa_cfg->errors_logged++;
1782 dev_err(&ioa_cfg->pdev->dev,
1783 "Adapter being reset due to command timeout.\n");
1784
1785 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1786 ioa_cfg->sdt_state = GET_DUMP;
1787
1788 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1789 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1790
1791 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1792 LEAVE;
1793 }
1794
1795 /**
1796 * ipr_oper_timeout - Adapter timed out transitioning to operational
1797 * @ipr_cmd: ipr command struct
1798 *
1799 * This function blocks host requests and initiates an
1800 * adapter reset.
1801 *
1802 * Return value:
1803 * none
1804 **/
1805 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1806 {
1807 unsigned long lock_flags = 0;
1808 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1809
1810 ENTER;
1811 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1812
1813 ioa_cfg->errors_logged++;
1814 dev_err(&ioa_cfg->pdev->dev,
1815 "Adapter timed out transitioning to operational.\n");
1816
1817 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1818 ioa_cfg->sdt_state = GET_DUMP;
1819
1820 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1821 if (ipr_fastfail)
1822 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1823 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1824 }
1825
1826 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1827 LEAVE;
1828 }
1829
1830 /**
1831 * ipr_reset_reload - Reset/Reload the IOA
1832 * @ioa_cfg: ioa config struct
1833 * @shutdown_type: shutdown type
1834 *
1835 * This function resets the adapter and re-initializes it.
1836 * This function assumes that all new host commands have been stopped.
1837 * Return value:
1838 * SUCCESS / FAILED
1839 **/
1840 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1841 enum ipr_shutdown_type shutdown_type)
1842 {
1843 if (!ioa_cfg->in_reset_reload)
1844 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1845
1846 spin_unlock_irq(ioa_cfg->host->host_lock);
1847 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1848 spin_lock_irq(ioa_cfg->host->host_lock);
1849
1850 /* If we got hit with a host reset while we were already resetting
1851 the adapter for some reason, and the reset failed. */
1852 if (ioa_cfg->ioa_is_dead) {
1853 ipr_trace;
1854 return FAILED;
1855 }
1856
1857 return SUCCESS;
1858 }
1859
1860 /**
1861 * ipr_find_ses_entry - Find matching SES in SES table
1862 * @res: resource entry struct of SES
1863 *
1864 * Return value:
1865 * pointer to SES table entry / NULL on failure
1866 **/
1867 static const struct ipr_ses_table_entry *
1868 ipr_find_ses_entry(struct ipr_resource_entry *res)
1869 {
1870 int i, j, matches;
1871 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1872
1873 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1874 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1875 if (ste->compare_product_id_byte[j] == 'X') {
1876 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1877 matches++;
1878 else
1879 break;
1880 } else
1881 matches++;
1882 }
1883
1884 if (matches == IPR_PROD_ID_LEN)
1885 return ste;
1886 }
1887
1888 return NULL;
1889 }
1890
1891 /**
1892 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1893 * @ioa_cfg: ioa config struct
1894 * @bus: SCSI bus
1895 * @bus_width: bus width
1896 *
1897 * Return value:
1898 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1899 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1900 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1901 * max 160MHz = max 320MB/sec).
1902 **/
1903 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1904 {
1905 struct ipr_resource_entry *res;
1906 const struct ipr_ses_table_entry *ste;
1907 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1908
1909 /* Loop through each config table entry in the config table buffer */
1910 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1911 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1912 continue;
1913
1914 if (bus != res->cfgte.res_addr.bus)
1915 continue;
1916
1917 if (!(ste = ipr_find_ses_entry(res)))
1918 continue;
1919
1920 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1921 }
1922
1923 return max_xfer_rate;
1924 }
1925
1926 /**
1927 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1928 * @ioa_cfg: ioa config struct
1929 * @max_delay: max delay in micro-seconds to wait
1930 *
1931 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1932 *
1933 * Return value:
1934 * 0 on success / other on failure
1935 **/
1936 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1937 {
1938 volatile u32 pcii_reg;
1939 int delay = 1;
1940
1941 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1942 while (delay < max_delay) {
1943 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1944
1945 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1946 return 0;
1947
1948 /* udelay cannot be used if delay is more than a few milliseconds */
1949 if ((delay / 1000) > MAX_UDELAY_MS)
1950 mdelay(delay / 1000);
1951 else
1952 udelay(delay);
1953
1954 delay += delay;
1955 }
1956 return -EIO;
1957 }
1958
1959 /**
1960 * ipr_get_ldump_data_section - Dump IOA memory
1961 * @ioa_cfg: ioa config struct
1962 * @start_addr: adapter address to dump
1963 * @dest: destination kernel buffer
1964 * @length_in_words: length to dump in 4 byte words
1965 *
1966 * Return value:
1967 * 0 on success / -EIO on failure
1968 **/
1969 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1970 u32 start_addr,
1971 __be32 *dest, u32 length_in_words)
1972 {
1973 volatile u32 temp_pcii_reg;
1974 int i, delay = 0;
1975
1976 /* Write IOA interrupt reg starting LDUMP state */
1977 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1978 ioa_cfg->regs.set_uproc_interrupt_reg);
1979
1980 /* Wait for IO debug acknowledge */
1981 if (ipr_wait_iodbg_ack(ioa_cfg,
1982 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1983 dev_err(&ioa_cfg->pdev->dev,
1984 "IOA dump long data transfer timeout\n");
1985 return -EIO;
1986 }
1987
1988 /* Signal LDUMP interlocked - clear IO debug ack */
1989 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1990 ioa_cfg->regs.clr_interrupt_reg);
1991
1992 /* Write Mailbox with starting address */
1993 writel(start_addr, ioa_cfg->ioa_mailbox);
1994
1995 /* Signal address valid - clear IOA Reset alert */
1996 writel(IPR_UPROCI_RESET_ALERT,
1997 ioa_cfg->regs.clr_uproc_interrupt_reg);
1998
1999 for (i = 0; i < length_in_words; i++) {
2000 /* Wait for IO debug acknowledge */
2001 if (ipr_wait_iodbg_ack(ioa_cfg,
2002 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2003 dev_err(&ioa_cfg->pdev->dev,
2004 "IOA dump short data transfer timeout\n");
2005 return -EIO;
2006 }
2007
2008 /* Read data from mailbox and increment destination pointer */
2009 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2010 dest++;
2011
2012 /* For all but the last word of data, signal data received */
2013 if (i < (length_in_words - 1)) {
2014 /* Signal dump data received - Clear IO debug Ack */
2015 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2016 ioa_cfg->regs.clr_interrupt_reg);
2017 }
2018 }
2019
2020 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2021 writel(IPR_UPROCI_RESET_ALERT,
2022 ioa_cfg->regs.set_uproc_interrupt_reg);
2023
2024 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2025 ioa_cfg->regs.clr_uproc_interrupt_reg);
2026
2027 /* Signal dump data received - Clear IO debug Ack */
2028 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2029 ioa_cfg->regs.clr_interrupt_reg);
2030
2031 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2032 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2033 temp_pcii_reg =
2034 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
2035
2036 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2037 return 0;
2038
2039 udelay(10);
2040 delay += 10;
2041 }
2042
2043 return 0;
2044 }
2045
2046 #ifdef CONFIG_SCSI_IPR_DUMP
2047 /**
2048 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2049 * @ioa_cfg: ioa config struct
2050 * @pci_address: adapter address
2051 * @length: length of data to copy
2052 *
2053 * Copy data from PCI adapter to kernel buffer.
2054 * Note: length MUST be a 4 byte multiple
2055 * Return value:
2056 * 0 on success / other on failure
2057 **/
2058 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2059 unsigned long pci_address, u32 length)
2060 {
2061 int bytes_copied = 0;
2062 int cur_len, rc, rem_len, rem_page_len;
2063 __be32 *page;
2064 unsigned long lock_flags = 0;
2065 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2066
2067 while (bytes_copied < length &&
2068 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
2069 if (ioa_dump->page_offset >= PAGE_SIZE ||
2070 ioa_dump->page_offset == 0) {
2071 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2072
2073 if (!page) {
2074 ipr_trace;
2075 return bytes_copied;
2076 }
2077
2078 ioa_dump->page_offset = 0;
2079 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2080 ioa_dump->next_page_index++;
2081 } else
2082 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2083
2084 rem_len = length - bytes_copied;
2085 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2086 cur_len = min(rem_len, rem_page_len);
2087
2088 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2089 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2090 rc = -EIO;
2091 } else {
2092 rc = ipr_get_ldump_data_section(ioa_cfg,
2093 pci_address + bytes_copied,
2094 &page[ioa_dump->page_offset / 4],
2095 (cur_len / sizeof(u32)));
2096 }
2097 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2098
2099 if (!rc) {
2100 ioa_dump->page_offset += cur_len;
2101 bytes_copied += cur_len;
2102 } else {
2103 ipr_trace;
2104 break;
2105 }
2106 schedule();
2107 }
2108
2109 return bytes_copied;
2110 }
2111
2112 /**
2113 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2114 * @hdr: dump entry header struct
2115 *
2116 * Return value:
2117 * nothing
2118 **/
2119 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2120 {
2121 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2122 hdr->num_elems = 1;
2123 hdr->offset = sizeof(*hdr);
2124 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2125 }
2126
2127 /**
2128 * ipr_dump_ioa_type_data - Fill in the adapter type 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_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2136 struct ipr_driver_dump *driver_dump)
2137 {
2138 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2139
2140 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2141 driver_dump->ioa_type_entry.hdr.len =
2142 sizeof(struct ipr_dump_ioa_type_entry) -
2143 sizeof(struct ipr_dump_entry_header);
2144 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2145 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2146 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2147 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2148 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2149 ucode_vpd->minor_release[1];
2150 driver_dump->hdr.num_entries++;
2151 }
2152
2153 /**
2154 * ipr_dump_version_data - Fill in the driver version in the dump.
2155 * @ioa_cfg: ioa config struct
2156 * @driver_dump: driver dump struct
2157 *
2158 * Return value:
2159 * nothing
2160 **/
2161 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2162 struct ipr_driver_dump *driver_dump)
2163 {
2164 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2165 driver_dump->version_entry.hdr.len =
2166 sizeof(struct ipr_dump_version_entry) -
2167 sizeof(struct ipr_dump_entry_header);
2168 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2169 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2170 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2171 driver_dump->hdr.num_entries++;
2172 }
2173
2174 /**
2175 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2176 * @ioa_cfg: ioa config struct
2177 * @driver_dump: driver dump struct
2178 *
2179 * Return value:
2180 * nothing
2181 **/
2182 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2183 struct ipr_driver_dump *driver_dump)
2184 {
2185 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2186 driver_dump->trace_entry.hdr.len =
2187 sizeof(struct ipr_dump_trace_entry) -
2188 sizeof(struct ipr_dump_entry_header);
2189 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2190 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2191 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2192 driver_dump->hdr.num_entries++;
2193 }
2194
2195 /**
2196 * ipr_dump_location_data - Fill in the IOA location in the dump.
2197 * @ioa_cfg: ioa config struct
2198 * @driver_dump: driver dump struct
2199 *
2200 * Return value:
2201 * nothing
2202 **/
2203 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2204 struct ipr_driver_dump *driver_dump)
2205 {
2206 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2207 driver_dump->location_entry.hdr.len =
2208 sizeof(struct ipr_dump_location_entry) -
2209 sizeof(struct ipr_dump_entry_header);
2210 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2211 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2212 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
2213 driver_dump->hdr.num_entries++;
2214 }
2215
2216 /**
2217 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2218 * @ioa_cfg: ioa config struct
2219 * @dump: dump struct
2220 *
2221 * Return value:
2222 * nothing
2223 **/
2224 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2225 {
2226 unsigned long start_addr, sdt_word;
2227 unsigned long lock_flags = 0;
2228 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2229 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2230 u32 num_entries, start_off, end_off;
2231 u32 bytes_to_copy, bytes_copied, rc;
2232 struct ipr_sdt *sdt;
2233 int i;
2234
2235 ENTER;
2236
2237 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2238
2239 if (ioa_cfg->sdt_state != GET_DUMP) {
2240 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2241 return;
2242 }
2243
2244 start_addr = readl(ioa_cfg->ioa_mailbox);
2245
2246 if (!ipr_sdt_is_fmt2(start_addr)) {
2247 dev_err(&ioa_cfg->pdev->dev,
2248 "Invalid dump table format: %lx\n", start_addr);
2249 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2250 return;
2251 }
2252
2253 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2254
2255 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2256
2257 /* Initialize the overall dump header */
2258 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2259 driver_dump->hdr.num_entries = 1;
2260 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2261 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2262 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2263 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2264
2265 ipr_dump_version_data(ioa_cfg, driver_dump);
2266 ipr_dump_location_data(ioa_cfg, driver_dump);
2267 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2268 ipr_dump_trace_data(ioa_cfg, driver_dump);
2269
2270 /* Update dump_header */
2271 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2272
2273 /* IOA Dump entry */
2274 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2275 ioa_dump->format = IPR_SDT_FMT2;
2276 ioa_dump->hdr.len = 0;
2277 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2278 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2279
2280 /* First entries in sdt are actually a list of dump addresses and
2281 lengths to gather the real dump data. sdt represents the pointer
2282 to the ioa generated dump table. Dump data will be extracted based
2283 on entries in this table */
2284 sdt = &ioa_dump->sdt;
2285
2286 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2287 sizeof(struct ipr_sdt) / sizeof(__be32));
2288
2289 /* Smart Dump table is ready to use and the first entry is valid */
2290 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
2291 dev_err(&ioa_cfg->pdev->dev,
2292 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2293 rc, be32_to_cpu(sdt->hdr.state));
2294 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2295 ioa_cfg->sdt_state = DUMP_OBTAINED;
2296 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2297 return;
2298 }
2299
2300 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2301
2302 if (num_entries > IPR_NUM_SDT_ENTRIES)
2303 num_entries = IPR_NUM_SDT_ENTRIES;
2304
2305 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2306
2307 for (i = 0; i < num_entries; i++) {
2308 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2309 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2310 break;
2311 }
2312
2313 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2314 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
2315 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2316 end_off = be32_to_cpu(sdt->entry[i].end_offset);
2317
2318 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
2319 bytes_to_copy = end_off - start_off;
2320 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2321 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2322 continue;
2323 }
2324
2325 /* Copy data from adapter to driver buffers */
2326 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2327 bytes_to_copy);
2328
2329 ioa_dump->hdr.len += bytes_copied;
2330
2331 if (bytes_copied != bytes_to_copy) {
2332 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2333 break;
2334 }
2335 }
2336 }
2337 }
2338
2339 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2340
2341 /* Update dump_header */
2342 driver_dump->hdr.len += ioa_dump->hdr.len;
2343 wmb();
2344 ioa_cfg->sdt_state = DUMP_OBTAINED;
2345 LEAVE;
2346 }
2347
2348 #else
2349 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2350 #endif
2351
2352 /**
2353 * ipr_release_dump - Free adapter dump memory
2354 * @kref: kref struct
2355 *
2356 * Return value:
2357 * nothing
2358 **/
2359 static void ipr_release_dump(struct kref *kref)
2360 {
2361 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2362 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2363 unsigned long lock_flags = 0;
2364 int i;
2365
2366 ENTER;
2367 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2368 ioa_cfg->dump = NULL;
2369 ioa_cfg->sdt_state = INACTIVE;
2370 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2371
2372 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2373 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2374
2375 kfree(dump);
2376 LEAVE;
2377 }
2378
2379 /**
2380 * ipr_worker_thread - Worker thread
2381 * @work: ioa config struct
2382 *
2383 * Called at task level from a work thread. This function takes care
2384 * of adding and removing device from the mid-layer as configuration
2385 * changes are detected by the adapter.
2386 *
2387 * Return value:
2388 * nothing
2389 **/
2390 static void ipr_worker_thread(struct work_struct *work)
2391 {
2392 unsigned long lock_flags;
2393 struct ipr_resource_entry *res;
2394 struct scsi_device *sdev;
2395 struct ipr_dump *dump;
2396 struct ipr_ioa_cfg *ioa_cfg =
2397 container_of(work, struct ipr_ioa_cfg, work_q);
2398 u8 bus, target, lun;
2399 int did_work;
2400
2401 ENTER;
2402 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2403
2404 if (ioa_cfg->sdt_state == GET_DUMP) {
2405 dump = ioa_cfg->dump;
2406 if (!dump) {
2407 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2408 return;
2409 }
2410 kref_get(&dump->kref);
2411 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2412 ipr_get_ioa_dump(ioa_cfg, dump);
2413 kref_put(&dump->kref, ipr_release_dump);
2414
2415 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2416 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2417 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2418 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2419 return;
2420 }
2421
2422 restart:
2423 do {
2424 did_work = 0;
2425 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2426 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2427 return;
2428 }
2429
2430 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2431 if (res->del_from_ml && res->sdev) {
2432 did_work = 1;
2433 sdev = res->sdev;
2434 if (!scsi_device_get(sdev)) {
2435 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2436 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2437 scsi_remove_device(sdev);
2438 scsi_device_put(sdev);
2439 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2440 }
2441 break;
2442 }
2443 }
2444 } while(did_work);
2445
2446 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2447 if (res->add_to_ml) {
2448 bus = res->cfgte.res_addr.bus;
2449 target = res->cfgte.res_addr.target;
2450 lun = res->cfgte.res_addr.lun;
2451 res->add_to_ml = 0;
2452 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2453 scsi_add_device(ioa_cfg->host, bus, target, lun);
2454 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2455 goto restart;
2456 }
2457 }
2458
2459 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2460 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE);
2461 LEAVE;
2462 }
2463
2464 #ifdef CONFIG_SCSI_IPR_TRACE
2465 /**
2466 * ipr_read_trace - Dump the adapter trace
2467 * @kobj: kobject struct
2468 * @buf: buffer
2469 * @off: offset
2470 * @count: buffer size
2471 *
2472 * Return value:
2473 * number of bytes printed to buffer
2474 **/
2475 static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
2476 loff_t off, size_t count)
2477 {
2478 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2479 struct Scsi_Host *shost = class_to_shost(cdev);
2480 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2481 unsigned long lock_flags = 0;
2482 int size = IPR_TRACE_SIZE;
2483 char *src = (char *)ioa_cfg->trace;
2484
2485 if (off > size)
2486 return 0;
2487 if (off + count > size) {
2488 size -= off;
2489 count = size;
2490 }
2491
2492 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2493 memcpy(buf, &src[off], count);
2494 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2495 return count;
2496 }
2497
2498 static struct bin_attribute ipr_trace_attr = {
2499 .attr = {
2500 .name = "trace",
2501 .mode = S_IRUGO,
2502 },
2503 .size = 0,
2504 .read = ipr_read_trace,
2505 };
2506 #endif
2507
2508 static const struct {
2509 enum ipr_cache_state state;
2510 char *name;
2511 } cache_state [] = {
2512 { CACHE_NONE, "none" },
2513 { CACHE_DISABLED, "disabled" },
2514 { CACHE_ENABLED, "enabled" }
2515 };
2516
2517 /**
2518 * ipr_show_write_caching - Show the write caching attribute
2519 * @class_dev: class device struct
2520 * @buf: buffer
2521 *
2522 * Return value:
2523 * number of bytes printed to buffer
2524 **/
2525 static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf)
2526 {
2527 struct Scsi_Host *shost = class_to_shost(class_dev);
2528 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2529 unsigned long lock_flags = 0;
2530 int i, len = 0;
2531
2532 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2533 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2534 if (cache_state[i].state == ioa_cfg->cache_state) {
2535 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2536 break;
2537 }
2538 }
2539 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2540 return len;
2541 }
2542
2543
2544 /**
2545 * ipr_store_write_caching - Enable/disable adapter write cache
2546 * @class_dev: class_device struct
2547 * @buf: buffer
2548 * @count: buffer size
2549 *
2550 * This function will enable/disable adapter write cache.
2551 *
2552 * Return value:
2553 * count on success / other on failure
2554 **/
2555 static ssize_t ipr_store_write_caching(struct class_device *class_dev,
2556 const char *buf, size_t count)
2557 {
2558 struct Scsi_Host *shost = class_to_shost(class_dev);
2559 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2560 unsigned long lock_flags = 0;
2561 enum ipr_cache_state new_state = CACHE_INVALID;
2562 int i;
2563
2564 if (!capable(CAP_SYS_ADMIN))
2565 return -EACCES;
2566 if (ioa_cfg->cache_state == CACHE_NONE)
2567 return -EINVAL;
2568
2569 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2570 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2571 new_state = cache_state[i].state;
2572 break;
2573 }
2574 }
2575
2576 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2577 return -EINVAL;
2578
2579 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2580 if (ioa_cfg->cache_state == new_state) {
2581 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2582 return count;
2583 }
2584
2585 ioa_cfg->cache_state = new_state;
2586 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2587 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2588 if (!ioa_cfg->in_reset_reload)
2589 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2590 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2591 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2592
2593 return count;
2594 }
2595
2596 static struct class_device_attribute ipr_ioa_cache_attr = {
2597 .attr = {
2598 .name = "write_cache",
2599 .mode = S_IRUGO | S_IWUSR,
2600 },
2601 .show = ipr_show_write_caching,
2602 .store = ipr_store_write_caching
2603 };
2604
2605 /**
2606 * ipr_show_fw_version - Show the firmware version
2607 * @class_dev: class device struct
2608 * @buf: buffer
2609 *
2610 * Return value:
2611 * number of bytes printed to buffer
2612 **/
2613 static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
2614 {
2615 struct Scsi_Host *shost = class_to_shost(class_dev);
2616 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2617 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2618 unsigned long lock_flags = 0;
2619 int len;
2620
2621 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2622 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2623 ucode_vpd->major_release, ucode_vpd->card_type,
2624 ucode_vpd->minor_release[0],
2625 ucode_vpd->minor_release[1]);
2626 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2627 return len;
2628 }
2629
2630 static struct class_device_attribute ipr_fw_version_attr = {
2631 .attr = {
2632 .name = "fw_version",
2633 .mode = S_IRUGO,
2634 },
2635 .show = ipr_show_fw_version,
2636 };
2637
2638 /**
2639 * ipr_show_log_level - Show the adapter's error logging level
2640 * @class_dev: class device struct
2641 * @buf: buffer
2642 *
2643 * Return value:
2644 * number of bytes printed to buffer
2645 **/
2646 static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2647 {
2648 struct Scsi_Host *shost = class_to_shost(class_dev);
2649 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2650 unsigned long lock_flags = 0;
2651 int len;
2652
2653 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2654 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2655 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2656 return len;
2657 }
2658
2659 /**
2660 * ipr_store_log_level - Change the adapter's error logging level
2661 * @class_dev: class device struct
2662 * @buf: buffer
2663 *
2664 * Return value:
2665 * number of bytes printed to buffer
2666 **/
2667 static ssize_t ipr_store_log_level(struct class_device *class_dev,
2668 const char *buf, size_t count)
2669 {
2670 struct Scsi_Host *shost = class_to_shost(class_dev);
2671 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2672 unsigned long lock_flags = 0;
2673
2674 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2675 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2676 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2677 return strlen(buf);
2678 }
2679
2680 static struct class_device_attribute ipr_log_level_attr = {
2681 .attr = {
2682 .name = "log_level",
2683 .mode = S_IRUGO | S_IWUSR,
2684 },
2685 .show = ipr_show_log_level,
2686 .store = ipr_store_log_level
2687 };
2688
2689 /**
2690 * ipr_store_diagnostics - IOA Diagnostics interface
2691 * @class_dev: class_device struct
2692 * @buf: buffer
2693 * @count: buffer size
2694 *
2695 * This function will reset the adapter and wait a reasonable
2696 * amount of time for any errors that the adapter might log.
2697 *
2698 * Return value:
2699 * count on success / other on failure
2700 **/
2701 static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2702 const char *buf, size_t count)
2703 {
2704 struct Scsi_Host *shost = class_to_shost(class_dev);
2705 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2706 unsigned long lock_flags = 0;
2707 int rc = count;
2708
2709 if (!capable(CAP_SYS_ADMIN))
2710 return -EACCES;
2711
2712 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2713 while(ioa_cfg->in_reset_reload) {
2714 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2715 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2716 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2717 }
2718
2719 ioa_cfg->errors_logged = 0;
2720 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2721
2722 if (ioa_cfg->in_reset_reload) {
2723 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2724 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2725
2726 /* Wait for a second for any errors to be logged */
2727 msleep(1000);
2728 } else {
2729 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2730 return -EIO;
2731 }
2732
2733 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2734 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2735 rc = -EIO;
2736 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2737
2738 return rc;
2739 }
2740
2741 static struct class_device_attribute ipr_diagnostics_attr = {
2742 .attr = {
2743 .name = "run_diagnostics",
2744 .mode = S_IWUSR,
2745 },
2746 .store = ipr_store_diagnostics
2747 };
2748
2749 /**
2750 * ipr_show_adapter_state - Show the adapter's state
2751 * @class_dev: class device struct
2752 * @buf: buffer
2753 *
2754 * Return value:
2755 * number of bytes printed to buffer
2756 **/
2757 static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf)
2758 {
2759 struct Scsi_Host *shost = class_to_shost(class_dev);
2760 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2761 unsigned long lock_flags = 0;
2762 int len;
2763
2764 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2765 if (ioa_cfg->ioa_is_dead)
2766 len = snprintf(buf, PAGE_SIZE, "offline\n");
2767 else
2768 len = snprintf(buf, PAGE_SIZE, "online\n");
2769 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2770 return len;
2771 }
2772
2773 /**
2774 * ipr_store_adapter_state - Change adapter state
2775 * @class_dev: class_device struct
2776 * @buf: buffer
2777 * @count: buffer size
2778 *
2779 * This function will change the adapter's state.
2780 *
2781 * Return value:
2782 * count on success / other on failure
2783 **/
2784 static ssize_t ipr_store_adapter_state(struct class_device *class_dev,
2785 const char *buf, size_t count)
2786 {
2787 struct Scsi_Host *shost = class_to_shost(class_dev);
2788 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2789 unsigned long lock_flags;
2790 int result = count;
2791
2792 if (!capable(CAP_SYS_ADMIN))
2793 return -EACCES;
2794
2795 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2796 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2797 ioa_cfg->ioa_is_dead = 0;
2798 ioa_cfg->reset_retries = 0;
2799 ioa_cfg->in_ioa_bringdown = 0;
2800 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2801 }
2802 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2803 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2804
2805 return result;
2806 }
2807
2808 static struct class_device_attribute ipr_ioa_state_attr = {
2809 .attr = {
2810 .name = "state",
2811 .mode = S_IRUGO | S_IWUSR,
2812 },
2813 .show = ipr_show_adapter_state,
2814 .store = ipr_store_adapter_state
2815 };
2816
2817 /**
2818 * ipr_store_reset_adapter - Reset the adapter
2819 * @class_dev: class_device struct
2820 * @buf: buffer
2821 * @count: buffer size
2822 *
2823 * This function will reset the adapter.
2824 *
2825 * Return value:
2826 * count on success / other on failure
2827 **/
2828 static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2829 const char *buf, size_t count)
2830 {
2831 struct Scsi_Host *shost = class_to_shost(class_dev);
2832 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2833 unsigned long lock_flags;
2834 int result = count;
2835
2836 if (!capable(CAP_SYS_ADMIN))
2837 return -EACCES;
2838
2839 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2840 if (!ioa_cfg->in_reset_reload)
2841 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2842 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2843 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2844
2845 return result;
2846 }
2847
2848 static struct class_device_attribute ipr_ioa_reset_attr = {
2849 .attr = {
2850 .name = "reset_host",
2851 .mode = S_IWUSR,
2852 },
2853 .store = ipr_store_reset_adapter
2854 };
2855
2856 /**
2857 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2858 * @buf_len: buffer length
2859 *
2860 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2861 * list to use for microcode download
2862 *
2863 * Return value:
2864 * pointer to sglist / NULL on failure
2865 **/
2866 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2867 {
2868 int sg_size, order, bsize_elem, num_elem, i, j;
2869 struct ipr_sglist *sglist;
2870 struct scatterlist *scatterlist;
2871 struct page *page;
2872
2873 /* Get the minimum size per scatter/gather element */
2874 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2875
2876 /* Get the actual size per element */
2877 order = get_order(sg_size);
2878
2879 /* Determine the actual number of bytes per element */
2880 bsize_elem = PAGE_SIZE * (1 << order);
2881
2882 /* Determine the actual number of sg entries needed */
2883 if (buf_len % bsize_elem)
2884 num_elem = (buf_len / bsize_elem) + 1;
2885 else
2886 num_elem = buf_len / bsize_elem;
2887
2888 /* Allocate a scatter/gather list for the DMA */
2889 sglist = kzalloc(sizeof(struct ipr_sglist) +
2890 (sizeof(struct scatterlist) * (num_elem - 1)),
2891 GFP_KERNEL);
2892
2893 if (sglist == NULL) {
2894 ipr_trace;
2895 return NULL;
2896 }
2897
2898 scatterlist = sglist->scatterlist;
2899
2900 sglist->order = order;
2901 sglist->num_sg = num_elem;
2902
2903 /* Allocate a bunch of sg elements */
2904 for (i = 0; i < num_elem; i++) {
2905 page = alloc_pages(GFP_KERNEL, order);
2906 if (!page) {
2907 ipr_trace;
2908
2909 /* Free up what we already allocated */
2910 for (j = i - 1; j >= 0; j--)
2911 __free_pages(scatterlist[j].page, order);
2912 kfree(sglist);
2913 return NULL;
2914 }
2915
2916 scatterlist[i].page = page;
2917 }
2918
2919 return sglist;
2920 }
2921
2922 /**
2923 * ipr_free_ucode_buffer - Frees a microcode download buffer
2924 * @p_dnld: scatter/gather list pointer
2925 *
2926 * Free a DMA'able ucode download buffer previously allocated with
2927 * ipr_alloc_ucode_buffer
2928 *
2929 * Return value:
2930 * nothing
2931 **/
2932 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2933 {
2934 int i;
2935
2936 for (i = 0; i < sglist->num_sg; i++)
2937 __free_pages(sglist->scatterlist[i].page, sglist->order);
2938
2939 kfree(sglist);
2940 }
2941
2942 /**
2943 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2944 * @sglist: scatter/gather list pointer
2945 * @buffer: buffer pointer
2946 * @len: buffer length
2947 *
2948 * Copy a microcode image from a user buffer into a buffer allocated by
2949 * ipr_alloc_ucode_buffer
2950 *
2951 * Return value:
2952 * 0 on success / other on failure
2953 **/
2954 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2955 u8 *buffer, u32 len)
2956 {
2957 int bsize_elem, i, result = 0;
2958 struct scatterlist *scatterlist;
2959 void *kaddr;
2960
2961 /* Determine the actual number of bytes per element */
2962 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2963
2964 scatterlist = sglist->scatterlist;
2965
2966 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2967 kaddr = kmap(scatterlist[i].page);
2968 memcpy(kaddr, buffer, bsize_elem);
2969 kunmap(scatterlist[i].page);
2970
2971 scatterlist[i].length = bsize_elem;
2972
2973 if (result != 0) {
2974 ipr_trace;
2975 return result;
2976 }
2977 }
2978
2979 if (len % bsize_elem) {
2980 kaddr = kmap(scatterlist[i].page);
2981 memcpy(kaddr, buffer, len % bsize_elem);
2982 kunmap(scatterlist[i].page);
2983
2984 scatterlist[i].length = len % bsize_elem;
2985 }
2986
2987 sglist->buffer_len = len;
2988 return result;
2989 }
2990
2991 /**
2992 * ipr_build_ucode_ioadl - Build a microcode download IOADL
2993 * @ipr_cmd: ipr command struct
2994 * @sglist: scatter/gather list
2995 *
2996 * Builds a microcode download IOA data list (IOADL).
2997 *
2998 **/
2999 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3000 struct ipr_sglist *sglist)
3001 {
3002 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3003 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
3004 struct scatterlist *scatterlist = sglist->scatterlist;
3005 int i;
3006
3007 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3008 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3009 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
3010 ioarcb->write_ioadl_len =
3011 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3012
3013 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3014 ioadl[i].flags_and_data_len =
3015 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3016 ioadl[i].address =
3017 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3018 }
3019
3020 ioadl[i-1].flags_and_data_len |=
3021 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3022 }
3023
3024 /**
3025 * ipr_update_ioa_ucode - Update IOA's microcode
3026 * @ioa_cfg: ioa config struct
3027 * @sglist: scatter/gather list
3028 *
3029 * Initiate an adapter reset to update the IOA's microcode
3030 *
3031 * Return value:
3032 * 0 on success / -EIO on failure
3033 **/
3034 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3035 struct ipr_sglist *sglist)
3036 {
3037 unsigned long lock_flags;
3038
3039 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3040 while(ioa_cfg->in_reset_reload) {
3041 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3042 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3043 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3044 }
3045
3046 if (ioa_cfg->ucode_sglist) {
3047 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3048 dev_err(&ioa_cfg->pdev->dev,
3049 "Microcode download already in progress\n");
3050 return -EIO;
3051 }
3052
3053 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3054 sglist->num_sg, DMA_TO_DEVICE);
3055
3056 if (!sglist->num_dma_sg) {
3057 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3058 dev_err(&ioa_cfg->pdev->dev,
3059 "Failed to map microcode download buffer!\n");
3060 return -EIO;
3061 }
3062
3063 ioa_cfg->ucode_sglist = sglist;
3064 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3065 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3066 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3067
3068 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3069 ioa_cfg->ucode_sglist = NULL;
3070 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3071 return 0;
3072 }
3073
3074 /**
3075 * ipr_store_update_fw - Update the firmware on the adapter
3076 * @class_dev: class_device struct
3077 * @buf: buffer
3078 * @count: buffer size
3079 *
3080 * This function will update the firmware on the adapter.
3081 *
3082 * Return value:
3083 * count on success / other on failure
3084 **/
3085 static ssize_t ipr_store_update_fw(struct class_device *class_dev,
3086 const char *buf, size_t count)
3087 {
3088 struct Scsi_Host *shost = class_to_shost(class_dev);
3089 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3090 struct ipr_ucode_image_header *image_hdr;
3091 const struct firmware *fw_entry;
3092 struct ipr_sglist *sglist;
3093 char fname[100];
3094 char *src;
3095 int len, result, dnld_size;
3096
3097 if (!capable(CAP_SYS_ADMIN))
3098 return -EACCES;
3099
3100 len = snprintf(fname, 99, "%s", buf);
3101 fname[len-1] = '\0';
3102
3103 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3104 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3105 return -EIO;
3106 }
3107
3108 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3109
3110 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3111 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3112 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3113 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3114 release_firmware(fw_entry);
3115 return -EINVAL;
3116 }
3117
3118 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3119 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3120 sglist = ipr_alloc_ucode_buffer(dnld_size);
3121
3122 if (!sglist) {
3123 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3124 release_firmware(fw_entry);
3125 return -ENOMEM;
3126 }
3127
3128 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3129
3130 if (result) {
3131 dev_err(&ioa_cfg->pdev->dev,
3132 "Microcode buffer copy to DMA buffer failed\n");
3133 goto out;
3134 }
3135
3136 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3137
3138 if (!result)
3139 result = count;
3140 out:
3141 ipr_free_ucode_buffer(sglist);
3142 release_firmware(fw_entry);
3143 return result;
3144 }
3145
3146 static struct class_device_attribute ipr_update_fw_attr = {
3147 .attr = {
3148 .name = "update_fw",
3149 .mode = S_IWUSR,
3150 },
3151 .store = ipr_store_update_fw
3152 };
3153
3154 static struct class_device_attribute *ipr_ioa_attrs[] = {
3155 &ipr_fw_version_attr,
3156 &ipr_log_level_attr,
3157 &ipr_diagnostics_attr,
3158 &ipr_ioa_state_attr,
3159 &ipr_ioa_reset_attr,
3160 &ipr_update_fw_attr,
3161 &ipr_ioa_cache_attr,
3162 NULL,
3163 };
3164
3165 #ifdef CONFIG_SCSI_IPR_DUMP
3166 /**
3167 * ipr_read_dump - Dump the adapter
3168 * @kobj: kobject struct
3169 * @buf: buffer
3170 * @off: offset
3171 * @count: buffer size
3172 *
3173 * Return value:
3174 * number of bytes printed to buffer
3175 **/
3176 static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
3177 loff_t off, size_t count)
3178 {
3179 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3180 struct Scsi_Host *shost = class_to_shost(cdev);
3181 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3182 struct ipr_dump *dump;
3183 unsigned long lock_flags = 0;
3184 char *src;
3185 int len;
3186 size_t rc = count;
3187
3188 if (!capable(CAP_SYS_ADMIN))
3189 return -EACCES;
3190
3191 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3192 dump = ioa_cfg->dump;
3193
3194 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3195 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3196 return 0;
3197 }
3198 kref_get(&dump->kref);
3199 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3200
3201 if (off > dump->driver_dump.hdr.len) {
3202 kref_put(&dump->kref, ipr_release_dump);
3203 return 0;
3204 }
3205
3206 if (off + count > dump->driver_dump.hdr.len) {
3207 count = dump->driver_dump.hdr.len - off;
3208 rc = count;
3209 }
3210
3211 if (count && off < sizeof(dump->driver_dump)) {
3212 if (off + count > sizeof(dump->driver_dump))
3213 len = sizeof(dump->driver_dump) - off;
3214 else
3215 len = count;
3216 src = (u8 *)&dump->driver_dump + off;
3217 memcpy(buf, src, len);
3218 buf += len;
3219 off += len;
3220 count -= len;
3221 }
3222
3223 off -= sizeof(dump->driver_dump);
3224
3225 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3226 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3227 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3228 else
3229 len = count;
3230 src = (u8 *)&dump->ioa_dump + off;
3231 memcpy(buf, src, len);
3232 buf += len;
3233 off += len;
3234 count -= len;
3235 }
3236
3237 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3238
3239 while (count) {
3240 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3241 len = PAGE_ALIGN(off) - off;
3242 else
3243 len = count;
3244 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3245 src += off & ~PAGE_MASK;
3246 memcpy(buf, src, len);
3247 buf += len;
3248 off += len;
3249 count -= len;
3250 }
3251
3252 kref_put(&dump->kref, ipr_release_dump);
3253 return rc;
3254 }
3255
3256 /**
3257 * ipr_alloc_dump - Prepare for adapter dump
3258 * @ioa_cfg: ioa config struct
3259 *
3260 * Return value:
3261 * 0 on success / other on failure
3262 **/
3263 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3264 {
3265 struct ipr_dump *dump;
3266 unsigned long lock_flags = 0;
3267
3268 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
3269
3270 if (!dump) {
3271 ipr_err("Dump memory allocation failed\n");
3272 return -ENOMEM;
3273 }
3274
3275 kref_init(&dump->kref);
3276 dump->ioa_cfg = ioa_cfg;
3277
3278 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3279
3280 if (INACTIVE != ioa_cfg->sdt_state) {
3281 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3282 kfree(dump);
3283 return 0;
3284 }
3285
3286 ioa_cfg->dump = dump;
3287 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3288 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3289 ioa_cfg->dump_taken = 1;
3290 schedule_work(&ioa_cfg->work_q);
3291 }
3292 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3293
3294 return 0;
3295 }
3296
3297 /**
3298 * ipr_free_dump - Free adapter dump memory
3299 * @ioa_cfg: ioa config struct
3300 *
3301 * Return value:
3302 * 0 on success / other on failure
3303 **/
3304 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3305 {
3306 struct ipr_dump *dump;
3307 unsigned long lock_flags = 0;
3308
3309 ENTER;
3310
3311 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3312 dump = ioa_cfg->dump;
3313 if (!dump) {
3314 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3315 return 0;
3316 }
3317
3318 ioa_cfg->dump = NULL;
3319 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3320
3321 kref_put(&dump->kref, ipr_release_dump);
3322
3323 LEAVE;
3324 return 0;
3325 }
3326
3327 /**
3328 * ipr_write_dump - Setup dump state of adapter
3329 * @kobj: kobject struct
3330 * @buf: buffer
3331 * @off: offset
3332 * @count: buffer size
3333 *
3334 * Return value:
3335 * number of bytes printed to buffer
3336 **/
3337 static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
3338 loff_t off, size_t count)
3339 {
3340 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3341 struct Scsi_Host *shost = class_to_shost(cdev);
3342 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3343 int rc;
3344
3345 if (!capable(CAP_SYS_ADMIN))
3346 return -EACCES;
3347
3348 if (buf[0] == '1')
3349 rc = ipr_alloc_dump(ioa_cfg);
3350 else if (buf[0] == '0')
3351 rc = ipr_free_dump(ioa_cfg);
3352 else
3353 return -EINVAL;
3354
3355 if (rc)
3356 return rc;
3357 else
3358 return count;
3359 }
3360
3361 static struct bin_attribute ipr_dump_attr = {
3362 .attr = {
3363 .name = "dump",
3364 .mode = S_IRUSR | S_IWUSR,
3365 },
3366 .size = 0,
3367 .read = ipr_read_dump,
3368 .write = ipr_write_dump
3369 };
3370 #else
3371 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3372 #endif
3373
3374 /**
3375 * ipr_change_queue_depth - Change the device's queue depth
3376 * @sdev: scsi device struct
3377 * @qdepth: depth to set
3378 *
3379 * Return value:
3380 * actual depth set
3381 **/
3382 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3383 {
3384 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3385 struct ipr_resource_entry *res;
3386 unsigned long lock_flags = 0;
3387
3388 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3389 res = (struct ipr_resource_entry *)sdev->hostdata;
3390
3391 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3392 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3393 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3394
3395 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3396 return sdev->queue_depth;
3397 }
3398
3399 /**
3400 * ipr_change_queue_type - Change the device's queue type
3401 * @dsev: scsi device struct
3402 * @tag_type: type of tags to use
3403 *
3404 * Return value:
3405 * actual queue type set
3406 **/
3407 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3408 {
3409 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3410 struct ipr_resource_entry *res;
3411 unsigned long lock_flags = 0;
3412
3413 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3414 res = (struct ipr_resource_entry *)sdev->hostdata;
3415
3416 if (res) {
3417 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3418 /*
3419 * We don't bother quiescing the device here since the
3420 * adapter firmware does it for us.
3421 */
3422 scsi_set_tag_type(sdev, tag_type);
3423
3424 if (tag_type)
3425 scsi_activate_tcq(sdev, sdev->queue_depth);
3426 else
3427 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3428 } else
3429 tag_type = 0;
3430 } else
3431 tag_type = 0;
3432
3433 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3434 return tag_type;
3435 }
3436
3437 /**
3438 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3439 * @dev: device struct
3440 * @buf: buffer
3441 *
3442 * Return value:
3443 * number of bytes printed to buffer
3444 **/
3445 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
3446 {
3447 struct scsi_device *sdev = to_scsi_device(dev);
3448 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3449 struct ipr_resource_entry *res;
3450 unsigned long lock_flags = 0;
3451 ssize_t len = -ENXIO;
3452
3453 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3454 res = (struct ipr_resource_entry *)sdev->hostdata;
3455 if (res)
3456 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3457 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3458 return len;
3459 }
3460
3461 static struct device_attribute ipr_adapter_handle_attr = {
3462 .attr = {
3463 .name = "adapter_handle",
3464 .mode = S_IRUSR,
3465 },
3466 .show = ipr_show_adapter_handle
3467 };
3468
3469 static struct device_attribute *ipr_dev_attrs[] = {
3470 &ipr_adapter_handle_attr,
3471 NULL,
3472 };
3473
3474 /**
3475 * ipr_biosparam - Return the HSC mapping
3476 * @sdev: scsi device struct
3477 * @block_device: block device pointer
3478 * @capacity: capacity of the device
3479 * @parm: Array containing returned HSC values.
3480 *
3481 * This function generates the HSC parms that fdisk uses.
3482 * We want to make sure we return something that places partitions
3483 * on 4k boundaries for best performance with the IOA.
3484 *
3485 * Return value:
3486 * 0 on success
3487 **/
3488 static int ipr_biosparam(struct scsi_device *sdev,
3489 struct block_device *block_device,
3490 sector_t capacity, int *parm)
3491 {
3492 int heads, sectors;
3493 sector_t cylinders;
3494
3495 heads = 128;
3496 sectors = 32;
3497
3498 cylinders = capacity;
3499 sector_div(cylinders, (128 * 32));
3500
3501 /* return result */
3502 parm[0] = heads;
3503 parm[1] = sectors;
3504 parm[2] = cylinders;
3505
3506 return 0;
3507 }
3508
3509 /**
3510 * ipr_find_starget - Find target based on bus/target.
3511 * @starget: scsi target struct
3512 *
3513 * Return value:
3514 * resource entry pointer if found / NULL if not found
3515 **/
3516 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3517 {
3518 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3519 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3520 struct ipr_resource_entry *res;
3521
3522 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3523 if ((res->cfgte.res_addr.bus == starget->channel) &&
3524 (res->cfgte.res_addr.target == starget->id) &&
3525 (res->cfgte.res_addr.lun == 0)) {
3526 return res;
3527 }
3528 }
3529
3530 return NULL;
3531 }
3532
3533 static struct ata_port_info sata_port_info;
3534
3535 /**
3536 * ipr_target_alloc - Prepare for commands to a SCSI target
3537 * @starget: scsi target struct
3538 *
3539 * If the device is a SATA device, this function allocates an
3540 * ATA port with libata, else it does nothing.
3541 *
3542 * Return value:
3543 * 0 on success / non-0 on failure
3544 **/
3545 static int ipr_target_alloc(struct scsi_target *starget)
3546 {
3547 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3548 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3549 struct ipr_sata_port *sata_port;
3550 struct ata_port *ap;
3551 struct ipr_resource_entry *res;
3552 unsigned long lock_flags;
3553
3554 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3555 res = ipr_find_starget(starget);
3556 starget->hostdata = NULL;
3557
3558 if (res && ipr_is_gata(res)) {
3559 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3560 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3561 if (!sata_port)
3562 return -ENOMEM;
3563
3564 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3565 if (ap) {
3566 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3567 sata_port->ioa_cfg = ioa_cfg;
3568 sata_port->ap = ap;
3569 sata_port->res = res;
3570
3571 res->sata_port = sata_port;
3572 ap->private_data = sata_port;
3573 starget->hostdata = sata_port;
3574 } else {
3575 kfree(sata_port);
3576 return -ENOMEM;
3577 }
3578 }
3579 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3580
3581 return 0;
3582 }
3583
3584 /**
3585 * ipr_target_destroy - Destroy a SCSI target
3586 * @starget: scsi target struct
3587 *
3588 * If the device was a SATA device, this function frees the libata
3589 * ATA port, else it does nothing.
3590 *
3591 **/
3592 static void ipr_target_destroy(struct scsi_target *starget)
3593 {
3594 struct ipr_sata_port *sata_port = starget->hostdata;
3595
3596 if (sata_port) {
3597 starget->hostdata = NULL;
3598 ata_sas_port_destroy(sata_port->ap);
3599 kfree(sata_port);
3600 }
3601 }
3602
3603 /**
3604 * ipr_find_sdev - Find device based on bus/target/lun.
3605 * @sdev: scsi device struct
3606 *
3607 * Return value:
3608 * resource entry pointer if found / NULL if not found
3609 **/
3610 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3611 {
3612 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3613 struct ipr_resource_entry *res;
3614
3615 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3616 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3617 (res->cfgte.res_addr.target == sdev->id) &&
3618 (res->cfgte.res_addr.lun == sdev->lun))
3619 return res;
3620 }
3621
3622 return NULL;
3623 }
3624
3625 /**
3626 * ipr_slave_destroy - Unconfigure a SCSI device
3627 * @sdev: scsi device struct
3628 *
3629 * Return value:
3630 * nothing
3631 **/
3632 static void ipr_slave_destroy(struct scsi_device *sdev)
3633 {
3634 struct ipr_resource_entry *res;
3635 struct ipr_ioa_cfg *ioa_cfg;
3636 unsigned long lock_flags = 0;
3637
3638 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3639
3640 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3641 res = (struct ipr_resource_entry *) sdev->hostdata;
3642 if (res) {
3643 if (res->sata_port)
3644 ata_port_disable(res->sata_port->ap);
3645 sdev->hostdata = NULL;
3646 res->sdev = NULL;
3647 res->sata_port = NULL;
3648 }
3649 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3650 }
3651
3652 /**
3653 * ipr_slave_configure - Configure a SCSI device
3654 * @sdev: scsi device struct
3655 *
3656 * This function configures the specified scsi device.
3657 *
3658 * Return value:
3659 * 0 on success
3660 **/
3661 static int ipr_slave_configure(struct scsi_device *sdev)
3662 {
3663 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3664 struct ipr_resource_entry *res;
3665 unsigned long lock_flags = 0;
3666
3667 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3668 res = sdev->hostdata;
3669 if (res) {
3670 if (ipr_is_af_dasd_device(res))
3671 sdev->type = TYPE_RAID;
3672 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
3673 sdev->scsi_level = 4;
3674 sdev->no_uld_attach = 1;
3675 }
3676 if (ipr_is_vset_device(res)) {
3677 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3678 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3679 }
3680 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
3681 sdev->allow_restart = 1;
3682 if (ipr_is_gata(res) && res->sata_port) {
3683 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3684 ata_sas_slave_configure(sdev, res->sata_port->ap);
3685 } else {
3686 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3687 }
3688 }
3689 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3690 return 0;
3691 }
3692
3693 /**
3694 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3695 * @sdev: scsi device struct
3696 *
3697 * This function initializes an ATA port so that future commands
3698 * sent through queuecommand will work.
3699 *
3700 * Return value:
3701 * 0 on success
3702 **/
3703 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3704 {
3705 struct ipr_sata_port *sata_port = NULL;
3706 int rc = -ENXIO;
3707
3708 ENTER;
3709 if (sdev->sdev_target)
3710 sata_port = sdev->sdev_target->hostdata;
3711 if (sata_port)
3712 rc = ata_sas_port_init(sata_port->ap);
3713 if (rc)
3714 ipr_slave_destroy(sdev);
3715
3716 LEAVE;
3717 return rc;
3718 }
3719
3720 /**
3721 * ipr_slave_alloc - Prepare for commands to a device.
3722 * @sdev: scsi device struct
3723 *
3724 * This function saves a pointer to the resource entry
3725 * in the scsi device struct if the device exists. We
3726 * can then use this pointer in ipr_queuecommand when
3727 * handling new commands.
3728 *
3729 * Return value:
3730 * 0 on success / -ENXIO if device does not exist
3731 **/
3732 static int ipr_slave_alloc(struct scsi_device *sdev)
3733 {
3734 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3735 struct ipr_resource_entry *res;
3736 unsigned long lock_flags;
3737 int rc = -ENXIO;
3738
3739 sdev->hostdata = NULL;
3740
3741 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3742
3743 res = ipr_find_sdev(sdev);
3744 if (res) {
3745 res->sdev = sdev;
3746 res->add_to_ml = 0;
3747 res->in_erp = 0;
3748 sdev->hostdata = res;
3749 if (!ipr_is_naca_model(res))
3750 res->needs_sync_complete = 1;
3751 rc = 0;
3752 if (ipr_is_gata(res)) {
3753 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3754 return ipr_ata_slave_alloc(sdev);
3755 }
3756 }
3757
3758 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3759
3760 return rc;
3761 }
3762
3763 /**
3764 * ipr_eh_host_reset - Reset the host adapter
3765 * @scsi_cmd: scsi command struct
3766 *
3767 * Return value:
3768 * SUCCESS / FAILED
3769 **/
3770 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
3771 {
3772 struct ipr_ioa_cfg *ioa_cfg;
3773 int rc;
3774
3775 ENTER;
3776 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3777
3778 dev_err(&ioa_cfg->pdev->dev,
3779 "Adapter being reset as a result of error recovery.\n");
3780
3781 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3782 ioa_cfg->sdt_state = GET_DUMP;
3783
3784 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3785
3786 LEAVE;
3787 return rc;
3788 }
3789
3790 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3791 {
3792 int rc;
3793
3794 spin_lock_irq(cmd->device->host->host_lock);
3795 rc = __ipr_eh_host_reset(cmd);
3796 spin_unlock_irq(cmd->device->host->host_lock);
3797
3798 return rc;
3799 }
3800
3801 /**
3802 * ipr_device_reset - Reset the device
3803 * @ioa_cfg: ioa config struct
3804 * @res: resource entry struct
3805 *
3806 * This function issues a device reset to the affected device.
3807 * If the device is a SCSI device, a LUN reset will be sent
3808 * to the device first. If that does not work, a target reset
3809 * will be sent. If the device is a SATA device, a PHY reset will
3810 * be sent.
3811 *
3812 * Return value:
3813 * 0 on success / non-zero on failure
3814 **/
3815 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3816 struct ipr_resource_entry *res)
3817 {
3818 struct ipr_cmnd *ipr_cmd;
3819 struct ipr_ioarcb *ioarcb;
3820 struct ipr_cmd_pkt *cmd_pkt;
3821 struct ipr_ioarcb_ata_regs *regs;
3822 u32 ioasc;
3823
3824 ENTER;
3825 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3826 ioarcb = &ipr_cmd->ioarcb;
3827 cmd_pkt = &ioarcb->cmd_pkt;
3828 regs = &ioarcb->add_data.u.regs;
3829
3830 ioarcb->res_handle = res->cfgte.res_handle;
3831 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3832 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3833 if (ipr_is_gata(res)) {
3834 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3835 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3836 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3837 }
3838
3839 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3840 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3841 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3842 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3843 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3844 sizeof(struct ipr_ioasa_gata));
3845
3846 LEAVE;
3847 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3848 }
3849
3850 /**
3851 * ipr_sata_reset - Reset the SATA port
3852 * @ap: SATA port to reset
3853 * @classes: class of the attached device
3854 *
3855 * This function issues a SATA phy reset to the affected ATA port.
3856 *
3857 * Return value:
3858 * 0 on success / non-zero on failure
3859 **/
3860 static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes,
3861 unsigned long deadline)
3862 {
3863 struct ipr_sata_port *sata_port = ap->private_data;
3864 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3865 struct ipr_resource_entry *res;
3866 unsigned long lock_flags = 0;
3867 int rc = -ENXIO;
3868
3869 ENTER;
3870 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3871 while(ioa_cfg->in_reset_reload) {
3872 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3873 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3874 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3875 }
3876
3877 res = sata_port->res;
3878 if (res) {
3879 rc = ipr_device_reset(ioa_cfg, res);
3880 switch(res->cfgte.proto) {
3881 case IPR_PROTO_SATA:
3882 case IPR_PROTO_SAS_STP:
3883 *classes = ATA_DEV_ATA;
3884 break;
3885 case IPR_PROTO_SATA_ATAPI:
3886 case IPR_PROTO_SAS_STP_ATAPI:
3887 *classes = ATA_DEV_ATAPI;
3888 break;
3889 default:
3890 *classes = ATA_DEV_UNKNOWN;
3891 break;
3892 };
3893 }
3894
3895 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3896 LEAVE;
3897 return rc;
3898 }
3899
3900 /**
3901 * ipr_eh_dev_reset - Reset the device
3902 * @scsi_cmd: scsi command struct
3903 *
3904 * This function issues a device reset to the affected device.
3905 * A LUN reset will be sent to the device first. If that does
3906 * not work, a target reset will be sent.
3907 *
3908 * Return value:
3909 * SUCCESS / FAILED
3910 **/
3911 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
3912 {
3913 struct ipr_cmnd *ipr_cmd;
3914 struct ipr_ioa_cfg *ioa_cfg;
3915 struct ipr_resource_entry *res;
3916 struct ata_port *ap;
3917 int rc = 0;
3918
3919 ENTER;
3920 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3921 res = scsi_cmd->device->hostdata;
3922
3923 if (!res)
3924 return FAILED;
3925
3926 /*
3927 * If we are currently going through reset/reload, return failed. This will force the
3928 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3929 * reset to complete
3930 */
3931 if (ioa_cfg->in_reset_reload)
3932 return FAILED;
3933 if (ioa_cfg->ioa_is_dead)
3934 return FAILED;
3935
3936 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3937 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3938 if (ipr_cmd->scsi_cmd)
3939 ipr_cmd->done = ipr_scsi_eh_done;
3940 if (ipr_cmd->qc)
3941 ipr_cmd->done = ipr_sata_eh_done;
3942 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
3943 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
3944 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
3945 }
3946 }
3947 }
3948
3949 res->resetting_device = 1;
3950 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
3951
3952 if (ipr_is_gata(res) && res->sata_port) {
3953 ap = res->sata_port->ap;
3954 spin_unlock_irq(scsi_cmd->device->host->host_lock);
3955 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL);
3956 spin_lock_irq(scsi_cmd->device->host->host_lock);
3957
3958 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3959 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3960 rc = -EIO;
3961 break;
3962 }
3963 }
3964 } else
3965 rc = ipr_device_reset(ioa_cfg, res);
3966 res->resetting_device = 0;
3967
3968 LEAVE;
3969 return (rc ? FAILED : SUCCESS);
3970 }
3971
3972 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3973 {
3974 int rc;
3975
3976 spin_lock_irq(cmd->device->host->host_lock);
3977 rc = __ipr_eh_dev_reset(cmd);
3978 spin_unlock_irq(cmd->device->host->host_lock);
3979
3980 return rc;
3981 }
3982
3983 /**
3984 * ipr_bus_reset_done - Op done function for bus reset.
3985 * @ipr_cmd: ipr command struct
3986 *
3987 * This function is the op done function for a bus reset
3988 *
3989 * Return value:
3990 * none
3991 **/
3992 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3993 {
3994 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3995 struct ipr_resource_entry *res;
3996
3997 ENTER;
3998 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3999 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
4000 sizeof(res->cfgte.res_handle))) {
4001 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
4002 break;
4003 }
4004 }
4005
4006 /*
4007 * If abort has not completed, indicate the reset has, else call the
4008 * abort's done function to wake the sleeping eh thread
4009 */
4010 if (ipr_cmd->sibling->sibling)
4011 ipr_cmd->sibling->sibling = NULL;
4012 else
4013 ipr_cmd->sibling->done(ipr_cmd->sibling);
4014
4015 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4016 LEAVE;
4017 }
4018
4019 /**
4020 * ipr_abort_timeout - An abort task has timed out
4021 * @ipr_cmd: ipr command struct
4022 *
4023 * This function handles when an abort task times out. If this
4024 * happens we issue a bus reset since we have resources tied
4025 * up that must be freed before returning to the midlayer.
4026 *
4027 * Return value:
4028 * none
4029 **/
4030 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4031 {
4032 struct ipr_cmnd *reset_cmd;
4033 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4034 struct ipr_cmd_pkt *cmd_pkt;
4035 unsigned long lock_flags = 0;
4036
4037 ENTER;
4038 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4039 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4040 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4041 return;
4042 }
4043
4044 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
4045 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4046 ipr_cmd->sibling = reset_cmd;
4047 reset_cmd->sibling = ipr_cmd;
4048 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4049 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4050 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4051 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4052 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4053
4054 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4055 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4056 LEAVE;
4057 }
4058
4059 /**
4060 * ipr_cancel_op - Cancel specified op
4061 * @scsi_cmd: scsi command struct
4062 *
4063 * This function cancels specified op.
4064 *
4065 * Return value:
4066 * SUCCESS / FAILED
4067 **/
4068 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4069 {
4070 struct ipr_cmnd *ipr_cmd;
4071 struct ipr_ioa_cfg *ioa_cfg;
4072 struct ipr_resource_entry *res;
4073 struct ipr_cmd_pkt *cmd_pkt;
4074 u32 ioasc;
4075 int op_found = 0;
4076
4077 ENTER;
4078 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4079 res = scsi_cmd->device->hostdata;
4080
4081 /* If we are currently going through reset/reload, return failed.
4082 * This will force the mid-layer to call ipr_eh_host_reset,
4083 * which will then go to sleep and wait for the reset to complete
4084 */
4085 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4086 return FAILED;
4087 if (!res || !ipr_is_gscsi(res))
4088 return FAILED;
4089
4090 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4091 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4092 ipr_cmd->done = ipr_scsi_eh_done;
4093 op_found = 1;
4094 break;
4095 }
4096 }
4097
4098 if (!op_found)
4099 return SUCCESS;
4100
4101 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4102 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4103 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4104 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4105 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4106 ipr_cmd->u.sdev = scsi_cmd->device;
4107
4108 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4109 scsi_cmd->cmnd[0]);
4110 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4111 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4112
4113 /*
4114 * If the abort task timed out and we sent a bus reset, we will get
4115 * one the following responses to the abort
4116 */
4117 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4118 ioasc = 0;
4119 ipr_trace;
4120 }
4121
4122 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4123 if (!ipr_is_naca_model(res))
4124 res->needs_sync_complete = 1;
4125
4126 LEAVE;
4127 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4128 }
4129
4130 /**
4131 * ipr_eh_abort - Abort a single op
4132 * @scsi_cmd: scsi command struct
4133 *
4134 * Return value:
4135 * SUCCESS / FAILED
4136 **/
4137 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4138 {
4139 unsigned long flags;
4140 int rc;
4141
4142 ENTER;
4143
4144 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4145 rc = ipr_cancel_op(scsi_cmd);
4146 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4147
4148 LEAVE;
4149 return rc;
4150 }
4151
4152 /**
4153 * ipr_handle_other_interrupt - Handle "other" interrupts
4154 * @ioa_cfg: ioa config struct
4155 * @int_reg: interrupt register
4156 *
4157 * Return value:
4158 * IRQ_NONE / IRQ_HANDLED
4159 **/
4160 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4161 volatile u32 int_reg)
4162 {
4163 irqreturn_t rc = IRQ_HANDLED;
4164
4165 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4166 /* Mask the interrupt */
4167 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4168
4169 /* Clear the interrupt */
4170 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4171 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4172
4173 list_del(&ioa_cfg->reset_cmd->queue);
4174 del_timer(&ioa_cfg->reset_cmd->timer);
4175 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4176 } else {
4177 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4178 ioa_cfg->ioa_unit_checked = 1;
4179 else
4180 dev_err(&ioa_cfg->pdev->dev,
4181 "Permanent IOA failure. 0x%08X\n", int_reg);
4182
4183 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4184 ioa_cfg->sdt_state = GET_DUMP;
4185
4186 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4187 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4188 }
4189
4190 return rc;
4191 }
4192
4193 /**
4194 * ipr_isr - Interrupt service routine
4195 * @irq: irq number
4196 * @devp: pointer to ioa config struct
4197 *
4198 * Return value:
4199 * IRQ_NONE / IRQ_HANDLED
4200 **/
4201 static irqreturn_t ipr_isr(int irq, void *devp)
4202 {
4203 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4204 unsigned long lock_flags = 0;
4205 volatile u32 int_reg, int_mask_reg;
4206 u32 ioasc;
4207 u16 cmd_index;
4208 struct ipr_cmnd *ipr_cmd;
4209 irqreturn_t rc = IRQ_NONE;
4210
4211 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4212
4213 /* If interrupts are disabled, ignore the interrupt */
4214 if (!ioa_cfg->allow_interrupts) {
4215 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4216 return IRQ_NONE;
4217 }
4218
4219 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4220 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4221
4222 /* If an interrupt on the adapter did not occur, ignore it */
4223 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4224 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4225 return IRQ_NONE;
4226 }
4227
4228 while (1) {
4229 ipr_cmd = NULL;
4230
4231 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4232 ioa_cfg->toggle_bit) {
4233
4234 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4235 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4236
4237 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4238 ioa_cfg->errors_logged++;
4239 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
4240
4241 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4242 ioa_cfg->sdt_state = GET_DUMP;
4243
4244 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4245 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4246 return IRQ_HANDLED;
4247 }
4248
4249 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4250
4251 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4252
4253 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4254
4255 list_del(&ipr_cmd->queue);
4256 del_timer(&ipr_cmd->timer);
4257 ipr_cmd->done(ipr_cmd);
4258
4259 rc = IRQ_HANDLED;
4260
4261 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4262 ioa_cfg->hrrq_curr++;
4263 } else {
4264 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4265 ioa_cfg->toggle_bit ^= 1u;
4266 }
4267 }
4268
4269 if (ipr_cmd != NULL) {
4270 /* Clear the PCI interrupt */
4271 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
4272 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4273 } else
4274 break;
4275 }
4276
4277 if (unlikely(rc == IRQ_NONE))
4278 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4279
4280 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4281 return rc;
4282 }
4283
4284 /**
4285 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
4286 * @ioa_cfg: ioa config struct
4287 * @ipr_cmd: ipr command struct
4288 *
4289 * Return value:
4290 * 0 on success / -1 on failure
4291 **/
4292 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
4293 struct ipr_cmnd *ipr_cmd)
4294 {
4295 int i;
4296 struct scatterlist *sglist;
4297 u32 length;
4298 u32 ioadl_flags = 0;
4299 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4300 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4301 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4302
4303 length = scsi_cmd->request_bufflen;
4304
4305 if (length == 0)
4306 return 0;
4307
4308 if (scsi_cmd->use_sg) {
4309 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
4310 scsi_cmd->request_buffer,
4311 scsi_cmd->use_sg,
4312 scsi_cmd->sc_data_direction);
4313
4314 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4315 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4316 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4317 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4318 ioarcb->write_ioadl_len =
4319 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4320 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4321 ioadl_flags = IPR_IOADL_FLAGS_READ;
4322 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4323 ioarcb->read_ioadl_len =
4324 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4325 }
4326
4327 sglist = scsi_cmd->request_buffer;
4328
4329 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) {
4330 ioadl = ioarcb->add_data.u.ioadl;
4331 ioarcb->write_ioadl_addr =
4332 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4333 offsetof(struct ipr_ioarcb, add_data));
4334 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4335 }
4336
4337 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
4338 ioadl[i].flags_and_data_len =
4339 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
4340 ioadl[i].address =
4341 cpu_to_be32(sg_dma_address(&sglist[i]));
4342 }
4343
4344 if (likely(ipr_cmd->dma_use_sg)) {
4345 ioadl[i-1].flags_and_data_len |=
4346 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4347 return 0;
4348 } else
4349 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4350 } else {
4351 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4352 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4353 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4354 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4355 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4356 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4357 ioadl_flags = IPR_IOADL_FLAGS_READ;
4358 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4359 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4360 }
4361
4362 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
4363 scsi_cmd->request_buffer, length,
4364 scsi_cmd->sc_data_direction);
4365
4366 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
4367 ioadl = ioarcb->add_data.u.ioadl;
4368 ioarcb->write_ioadl_addr =
4369 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4370 offsetof(struct ipr_ioarcb, add_data));
4371 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4372 ipr_cmd->dma_use_sg = 1;
4373 ioadl[0].flags_and_data_len =
4374 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
4375 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
4376 return 0;
4377 } else
4378 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
4379 }
4380
4381 return -1;
4382 }
4383
4384 /**
4385 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4386 * @scsi_cmd: scsi command struct
4387 *
4388 * Return value:
4389 * task attributes
4390 **/
4391 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4392 {
4393 u8 tag[2];
4394 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4395
4396 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4397 switch (tag[0]) {
4398 case MSG_SIMPLE_TAG:
4399 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4400 break;
4401 case MSG_HEAD_TAG:
4402 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4403 break;
4404 case MSG_ORDERED_TAG:
4405 rc = IPR_FLAGS_LO_ORDERED_TASK;
4406 break;
4407 };
4408 }
4409
4410 return rc;
4411 }
4412
4413 /**
4414 * ipr_erp_done - Process completion of ERP for a device
4415 * @ipr_cmd: ipr command struct
4416 *
4417 * This function copies the sense buffer into the scsi_cmd
4418 * struct and pushes the scsi_done function.
4419 *
4420 * Return value:
4421 * nothing
4422 **/
4423 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4424 {
4425 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4426 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4427 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4428 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4429
4430 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4431 scsi_cmd->result |= (DID_ERROR << 16);
4432 scmd_printk(KERN_ERR, scsi_cmd,
4433 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
4434 } else {
4435 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4436 SCSI_SENSE_BUFFERSIZE);
4437 }
4438
4439 if (res) {
4440 if (!ipr_is_naca_model(res))
4441 res->needs_sync_complete = 1;
4442 res->in_erp = 0;
4443 }
4444 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4445 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4446 scsi_cmd->scsi_done(scsi_cmd);
4447 }
4448
4449 /**
4450 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4451 * @ipr_cmd: ipr command struct
4452 *
4453 * Return value:
4454 * none
4455 **/
4456 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4457 {
4458 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4459 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4460 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
4461
4462 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4463 ioarcb->write_data_transfer_length = 0;
4464 ioarcb->read_data_transfer_length = 0;
4465 ioarcb->write_ioadl_len = 0;
4466 ioarcb->read_ioadl_len = 0;
4467 ioasa->ioasc = 0;
4468 ioasa->residual_data_len = 0;
4469 ioarcb->write_ioadl_addr =
4470 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
4471 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4472 }
4473
4474 /**
4475 * ipr_erp_request_sense - Send request sense to a device
4476 * @ipr_cmd: ipr command struct
4477 *
4478 * This function sends a request sense to a device as a result
4479 * of a check condition.
4480 *
4481 * Return value:
4482 * nothing
4483 **/
4484 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4485 {
4486 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4487 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4488
4489 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4490 ipr_erp_done(ipr_cmd);
4491 return;
4492 }
4493
4494 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4495
4496 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4497 cmd_pkt->cdb[0] = REQUEST_SENSE;
4498 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4499 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4500 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4501 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4502
4503 ipr_cmd->ioadl[0].flags_and_data_len =
4504 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4505 ipr_cmd->ioadl[0].address =
4506 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4507
4508 ipr_cmd->ioarcb.read_ioadl_len =
4509 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4510 ipr_cmd->ioarcb.read_data_transfer_length =
4511 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4512
4513 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4514 IPR_REQUEST_SENSE_TIMEOUT * 2);
4515 }
4516
4517 /**
4518 * ipr_erp_cancel_all - Send cancel all to a device
4519 * @ipr_cmd: ipr command struct
4520 *
4521 * This function sends a cancel all to a device to clear the
4522 * queue. If we are running TCQ on the device, QERR is set to 1,
4523 * which means all outstanding ops have been dropped on the floor.
4524 * Cancel all will return them to us.
4525 *
4526 * Return value:
4527 * nothing
4528 **/
4529 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4530 {
4531 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4532 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4533 struct ipr_cmd_pkt *cmd_pkt;
4534
4535 res->in_erp = 1;
4536
4537 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4538
4539 if (!scsi_get_tag_type(scsi_cmd->device)) {
4540 ipr_erp_request_sense(ipr_cmd);
4541 return;
4542 }
4543
4544 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4545 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4546 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4547
4548 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4549 IPR_CANCEL_ALL_TIMEOUT);
4550 }
4551
4552 /**
4553 * ipr_dump_ioasa - Dump contents of IOASA
4554 * @ioa_cfg: ioa config struct
4555 * @ipr_cmd: ipr command struct
4556 * @res: resource entry struct
4557 *
4558 * This function is invoked by the interrupt handler when ops
4559 * fail. It will log the IOASA if appropriate. Only called
4560 * for GPDD ops.
4561 *
4562 * Return value:
4563 * none
4564 **/
4565 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
4566 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
4567 {
4568 int i;
4569 u16 data_len;
4570 u32 ioasc, fd_ioasc;
4571 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4572 __be32 *ioasa_data = (__be32 *)ioasa;
4573 int error_index;
4574
4575 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
4576 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK;
4577
4578 if (0 == ioasc)
4579 return;
4580
4581 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4582 return;
4583
4584 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
4585 error_index = ipr_get_error(fd_ioasc);
4586 else
4587 error_index = ipr_get_error(ioasc);
4588
4589 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4590 /* Don't log an error if the IOA already logged one */
4591 if (ioasa->ilid != 0)
4592 return;
4593
4594 if (!ipr_is_gscsi(res))
4595 return;
4596
4597 if (ipr_error_table[error_index].log_ioasa == 0)
4598 return;
4599 }
4600
4601 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
4602
4603 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4604 data_len = sizeof(struct ipr_ioasa);
4605 else
4606 data_len = be16_to_cpu(ioasa->ret_stat_len);
4607
4608 ipr_err("IOASA Dump:\n");
4609
4610 for (i = 0; i < data_len / 4; i += 4) {
4611 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4612 be32_to_cpu(ioasa_data[i]),
4613 be32_to_cpu(ioasa_data[i+1]),
4614 be32_to_cpu(ioasa_data[i+2]),
4615 be32_to_cpu(ioasa_data[i+3]));
4616 }
4617 }
4618
4619 /**
4620 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4621 * @ioasa: IOASA
4622 * @sense_buf: sense data buffer
4623 *
4624 * Return value:
4625 * none
4626 **/
4627 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4628 {
4629 u32 failing_lba;
4630 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4631 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4632 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4633 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4634
4635 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4636
4637 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4638 return;
4639
4640 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4641
4642 if (ipr_is_vset_device(res) &&
4643 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4644 ioasa->u.vset.failing_lba_hi != 0) {
4645 sense_buf[0] = 0x72;
4646 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4647 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4648 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4649
4650 sense_buf[7] = 12;
4651 sense_buf[8] = 0;
4652 sense_buf[9] = 0x0A;
4653 sense_buf[10] = 0x80;
4654
4655 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4656
4657 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4658 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4659 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4660 sense_buf[15] = failing_lba & 0x000000ff;
4661
4662 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4663
4664 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4665 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4666 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4667 sense_buf[19] = failing_lba & 0x000000ff;
4668 } else {
4669 sense_buf[0] = 0x70;
4670 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4671 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4672 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4673
4674 /* Illegal request */
4675 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4676 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4677 sense_buf[7] = 10; /* additional length */
4678
4679 /* IOARCB was in error */
4680 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4681 sense_buf[15] = 0xC0;
4682 else /* Parameter data was invalid */
4683 sense_buf[15] = 0x80;
4684
4685 sense_buf[16] =
4686 ((IPR_FIELD_POINTER_MASK &
4687 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4688 sense_buf[17] =
4689 (IPR_FIELD_POINTER_MASK &
4690 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4691 } else {
4692 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4693 if (ipr_is_vset_device(res))
4694 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4695 else
4696 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4697
4698 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4699 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4700 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4701 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4702 sense_buf[6] = failing_lba & 0x000000ff;
4703 }
4704
4705 sense_buf[7] = 6; /* additional length */
4706 }
4707 }
4708 }
4709
4710 /**
4711 * ipr_get_autosense - Copy autosense data to sense buffer
4712 * @ipr_cmd: ipr command struct
4713 *
4714 * This function copies the autosense buffer to the buffer
4715 * in the scsi_cmd, if there is autosense available.
4716 *
4717 * Return value:
4718 * 1 if autosense was available / 0 if not
4719 **/
4720 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4721 {
4722 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4723
4724 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
4725 return 0;
4726
4727 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4728 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4729 SCSI_SENSE_BUFFERSIZE));
4730 return 1;
4731 }
4732
4733 /**
4734 * ipr_erp_start - Process an error response for a SCSI op
4735 * @ioa_cfg: ioa config struct
4736 * @ipr_cmd: ipr command struct
4737 *
4738 * This function determines whether or not to initiate ERP
4739 * on the affected device.
4740 *
4741 * Return value:
4742 * nothing
4743 **/
4744 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4745 struct ipr_cmnd *ipr_cmd)
4746 {
4747 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4748 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4749 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4750 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
4751
4752 if (!res) {
4753 ipr_scsi_eh_done(ipr_cmd);
4754 return;
4755 }
4756
4757 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
4758 ipr_gen_sense(ipr_cmd);
4759
4760 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4761
4762 switch (masked_ioasc) {
4763 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
4764 if (ipr_is_naca_model(res))
4765 scsi_cmd->result |= (DID_ABORT << 16);
4766 else
4767 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4768 break;
4769 case IPR_IOASC_IR_RESOURCE_HANDLE:
4770 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
4771 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4772 break;
4773 case IPR_IOASC_HW_SEL_TIMEOUT:
4774 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4775 if (!ipr_is_naca_model(res))
4776 res->needs_sync_complete = 1;
4777 break;
4778 case IPR_IOASC_SYNC_REQUIRED:
4779 if (!res->in_erp)
4780 res->needs_sync_complete = 1;
4781 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4782 break;
4783 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
4784 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
4785 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4786 break;
4787 case IPR_IOASC_BUS_WAS_RESET:
4788 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4789 /*
4790 * Report the bus reset and ask for a retry. The device
4791 * will give CC/UA the next command.
4792 */
4793 if (!res->resetting_device)
4794 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4795 scsi_cmd->result |= (DID_ERROR << 16);
4796 if (!ipr_is_naca_model(res))
4797 res->needs_sync_complete = 1;
4798 break;
4799 case IPR_IOASC_HW_DEV_BUS_STATUS:
4800 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4801 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
4802 if (!ipr_get_autosense(ipr_cmd)) {
4803 if (!ipr_is_naca_model(res)) {
4804 ipr_erp_cancel_all(ipr_cmd);
4805 return;
4806 }
4807 }
4808 }
4809 if (!ipr_is_naca_model(res))
4810 res->needs_sync_complete = 1;
4811 break;
4812 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4813 break;
4814 default:
4815 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4816 scsi_cmd->result |= (DID_ERROR << 16);
4817 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
4818 res->needs_sync_complete = 1;
4819 break;
4820 }
4821
4822 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4823 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4824 scsi_cmd->scsi_done(scsi_cmd);
4825 }
4826
4827 /**
4828 * ipr_scsi_done - mid-layer done function
4829 * @ipr_cmd: ipr command struct
4830 *
4831 * This function is invoked by the interrupt handler for
4832 * ops generated by the SCSI mid-layer
4833 *
4834 * Return value:
4835 * none
4836 **/
4837 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4838 {
4839 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4840 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4841 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4842
4843 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
4844
4845 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
4846 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4847 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4848 scsi_cmd->scsi_done(scsi_cmd);
4849 } else
4850 ipr_erp_start(ioa_cfg, ipr_cmd);
4851 }
4852
4853 /**
4854 * ipr_queuecommand - Queue a mid-layer request
4855 * @scsi_cmd: scsi command struct
4856 * @done: done function
4857 *
4858 * This function queues a request generated by the mid-layer.
4859 *
4860 * Return value:
4861 * 0 on success
4862 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4863 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4864 **/
4865 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4866 void (*done) (struct scsi_cmnd *))
4867 {
4868 struct ipr_ioa_cfg *ioa_cfg;
4869 struct ipr_resource_entry *res;
4870 struct ipr_ioarcb *ioarcb;
4871 struct ipr_cmnd *ipr_cmd;
4872 int rc = 0;
4873
4874 scsi_cmd->scsi_done = done;
4875 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4876 res = scsi_cmd->device->hostdata;
4877 scsi_cmd->result = (DID_OK << 16);
4878
4879 /*
4880 * We are currently blocking all devices due to a host reset
4881 * We have told the host to stop giving us new requests, but
4882 * ERP ops don't count. FIXME
4883 */
4884 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4885 return SCSI_MLQUEUE_HOST_BUSY;
4886
4887 /*
4888 * FIXME - Create scsi_set_host_offline interface
4889 * and the ioa_is_dead check can be removed
4890 */
4891 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4892 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4893 scsi_cmd->result = (DID_NO_CONNECT << 16);
4894 scsi_cmd->scsi_done(scsi_cmd);
4895 return 0;
4896 }
4897
4898 if (ipr_is_gata(res) && res->sata_port)
4899 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4900
4901 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4902 ioarcb = &ipr_cmd->ioarcb;
4903 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4904
4905 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4906 ipr_cmd->scsi_cmd = scsi_cmd;
4907 ioarcb->res_handle = res->cfgte.res_handle;
4908 ipr_cmd->done = ipr_scsi_done;
4909 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4910
4911 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4912 if (scsi_cmd->underflow == 0)
4913 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4914
4915 if (res->needs_sync_complete) {
4916 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4917 res->needs_sync_complete = 0;
4918 }
4919
4920 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4921 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4922 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4923 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4924 }
4925
4926 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4927 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4928 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4929
4930 if (likely(rc == 0))
4931 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4932
4933 if (likely(rc == 0)) {
4934 mb();
4935 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4936 ioa_cfg->regs.ioarrin_reg);
4937 } else {
4938 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4939 return SCSI_MLQUEUE_HOST_BUSY;
4940 }
4941
4942 return 0;
4943 }
4944
4945 /**
4946 * ipr_ioctl - IOCTL handler
4947 * @sdev: scsi device struct
4948 * @cmd: IOCTL cmd
4949 * @arg: IOCTL arg
4950 *
4951 * Return value:
4952 * 0 on success / other on failure
4953 **/
4954 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
4955 {
4956 struct ipr_resource_entry *res;
4957
4958 res = (struct ipr_resource_entry *)sdev->hostdata;
4959 if (res && ipr_is_gata(res))
4960 return ata_scsi_ioctl(sdev, cmd, arg);
4961
4962 return -EINVAL;
4963 }
4964
4965 /**
4966 * ipr_info - Get information about the card/driver
4967 * @scsi_host: scsi host struct
4968 *
4969 * Return value:
4970 * pointer to buffer with description string
4971 **/
4972 static const char * ipr_ioa_info(struct Scsi_Host *host)
4973 {
4974 static char buffer[512];
4975 struct ipr_ioa_cfg *ioa_cfg;
4976 unsigned long lock_flags = 0;
4977
4978 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4979
4980 spin_lock_irqsave(host->host_lock, lock_flags);
4981 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4982 spin_unlock_irqrestore(host->host_lock, lock_flags);
4983
4984 return buffer;
4985 }
4986
4987 static struct scsi_host_template driver_template = {
4988 .module = THIS_MODULE,
4989 .name = "IPR",
4990 .info = ipr_ioa_info,
4991 .ioctl = ipr_ioctl,
4992 .queuecommand = ipr_queuecommand,
4993 .eh_abort_handler = ipr_eh_abort,
4994 .eh_device_reset_handler = ipr_eh_dev_reset,
4995 .eh_host_reset_handler = ipr_eh_host_reset,
4996 .slave_alloc = ipr_slave_alloc,
4997 .slave_configure = ipr_slave_configure,
4998 .slave_destroy = ipr_slave_destroy,
4999 .target_alloc = ipr_target_alloc,
5000 .target_destroy = ipr_target_destroy,
5001 .change_queue_depth = ipr_change_queue_depth,
5002 .change_queue_type = ipr_change_queue_type,
5003 .bios_param = ipr_biosparam,
5004 .can_queue = IPR_MAX_COMMANDS,
5005 .this_id = -1,
5006 .sg_tablesize = IPR_MAX_SGLIST,
5007 .max_sectors = IPR_IOA_MAX_SECTORS,
5008 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
5009 .use_clustering = ENABLE_CLUSTERING,
5010 .shost_attrs = ipr_ioa_attrs,
5011 .sdev_attrs = ipr_dev_attrs,
5012 .proc_name = IPR_NAME
5013 };
5014
5015 /**
5016 * ipr_ata_phy_reset - libata phy_reset handler
5017 * @ap: ata port to reset
5018 *
5019 **/
5020 static void ipr_ata_phy_reset(struct ata_port *ap)
5021 {
5022 unsigned long flags;
5023 struct ipr_sata_port *sata_port = ap->private_data;
5024 struct ipr_resource_entry *res = sata_port->res;
5025 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5026 int rc;
5027
5028 ENTER;
5029 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5030 while(ioa_cfg->in_reset_reload) {
5031 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5032 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5033 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5034 }
5035
5036 if (!ioa_cfg->allow_cmds)
5037 goto out_unlock;
5038
5039 rc = ipr_device_reset(ioa_cfg, res);
5040
5041 if (rc) {
5042 ap->ops->port_disable(ap);
5043 goto out_unlock;
5044 }
5045
5046 switch(res->cfgte.proto) {
5047 case IPR_PROTO_SATA:
5048 case IPR_PROTO_SAS_STP:
5049 ap->device[0].class = ATA_DEV_ATA;
5050 break;
5051 case IPR_PROTO_SATA_ATAPI:
5052 case IPR_PROTO_SAS_STP_ATAPI:
5053 ap->device[0].class = ATA_DEV_ATAPI;
5054 break;
5055 default:
5056 ap->device[0].class = ATA_DEV_UNKNOWN;
5057 ap->ops->port_disable(ap);
5058 break;
5059 };
5060
5061 out_unlock:
5062 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5063 LEAVE;
5064 }
5065
5066 /**
5067 * ipr_ata_post_internal - Cleanup after an internal command
5068 * @qc: ATA queued command
5069 *
5070 * Return value:
5071 * none
5072 **/
5073 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5074 {
5075 struct ipr_sata_port *sata_port = qc->ap->private_data;
5076 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5077 struct ipr_cmnd *ipr_cmd;
5078 unsigned long flags;
5079
5080 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5081 while(ioa_cfg->in_reset_reload) {
5082 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5083 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5084 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5085 }
5086
5087 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5088 if (ipr_cmd->qc == qc) {
5089 ipr_device_reset(ioa_cfg, sata_port->res);
5090 break;
5091 }
5092 }
5093 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5094 }
5095
5096 /**
5097 * ipr_tf_read - Read the current ATA taskfile for the ATA port
5098 * @ap: ATA port
5099 * @tf: destination ATA taskfile
5100 *
5101 * Return value:
5102 * none
5103 **/
5104 static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
5105 {
5106 struct ipr_sata_port *sata_port = ap->private_data;
5107 struct ipr_ioasa_gata *g = &sata_port->ioasa;
5108
5109 tf->feature = g->error;
5110 tf->nsect = g->nsect;
5111 tf->lbal = g->lbal;
5112 tf->lbam = g->lbam;
5113 tf->lbah = g->lbah;
5114 tf->device = g->device;
5115 tf->command = g->status;
5116 tf->hob_nsect = g->hob_nsect;
5117 tf->hob_lbal = g->hob_lbal;
5118 tf->hob_lbam = g->hob_lbam;
5119 tf->hob_lbah = g->hob_lbah;
5120 tf->ctl = g->alt_status;
5121 }
5122
5123 /**
5124 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5125 * @regs: destination
5126 * @tf: source ATA taskfile
5127 *
5128 * Return value:
5129 * none
5130 **/
5131 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5132 struct ata_taskfile *tf)
5133 {
5134 regs->feature = tf->feature;
5135 regs->nsect = tf->nsect;
5136 regs->lbal = tf->lbal;
5137 regs->lbam = tf->lbam;
5138 regs->lbah = tf->lbah;
5139 regs->device = tf->device;
5140 regs->command = tf->command;
5141 regs->hob_feature = tf->hob_feature;
5142 regs->hob_nsect = tf->hob_nsect;
5143 regs->hob_lbal = tf->hob_lbal;
5144 regs->hob_lbam = tf->hob_lbam;
5145 regs->hob_lbah = tf->hob_lbah;
5146 regs->ctl = tf->ctl;
5147 }
5148
5149 /**
5150 * ipr_sata_done - done function for SATA commands
5151 * @ipr_cmd: ipr command struct
5152 *
5153 * This function is invoked by the interrupt handler for
5154 * ops generated by the SCSI mid-layer to SATA devices
5155 *
5156 * Return value:
5157 * none
5158 **/
5159 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5160 {
5161 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5162 struct ata_queued_cmd *qc = ipr_cmd->qc;
5163 struct ipr_sata_port *sata_port = qc->ap->private_data;
5164 struct ipr_resource_entry *res = sata_port->res;
5165 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5166
5167 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5168 sizeof(struct ipr_ioasa_gata));
5169 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5170
5171 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5172 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
5173 res->cfgte.res_addr.target);
5174
5175 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5176 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5177 else
5178 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5179 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5180 ata_qc_complete(qc);
5181 }
5182
5183 /**
5184 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5185 * @ipr_cmd: ipr command struct
5186 * @qc: ATA queued command
5187 *
5188 **/
5189 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5190 struct ata_queued_cmd *qc)
5191 {
5192 u32 ioadl_flags = 0;
5193 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5194 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5195 int len = qc->nbytes + qc->pad_len;
5196 struct scatterlist *sg;
5197
5198 if (len == 0)
5199 return;
5200
5201 if (qc->dma_dir == DMA_TO_DEVICE) {
5202 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5203 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5204 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5205 ioarcb->write_ioadl_len =
5206 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5207 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5208 ioadl_flags = IPR_IOADL_FLAGS_READ;
5209 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5210 ioarcb->read_ioadl_len =
5211 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5212 }
5213
5214 ata_for_each_sg(sg, qc) {
5215 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5216 ioadl->address = cpu_to_be32(sg_dma_address(sg));
5217 if (ata_sg_is_last(sg, qc))
5218 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5219 else
5220 ioadl++;
5221 }
5222 }
5223
5224 /**
5225 * ipr_qc_issue - Issue a SATA qc to a device
5226 * @qc: queued command
5227 *
5228 * Return value:
5229 * 0 if success
5230 **/
5231 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5232 {
5233 struct ata_port *ap = qc->ap;
5234 struct ipr_sata_port *sata_port = ap->private_data;
5235 struct ipr_resource_entry *res = sata_port->res;
5236 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5237 struct ipr_cmnd *ipr_cmd;
5238 struct ipr_ioarcb *ioarcb;
5239 struct ipr_ioarcb_ata_regs *regs;
5240
5241 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
5242 return AC_ERR_SYSTEM;
5243
5244 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5245 ioarcb = &ipr_cmd->ioarcb;
5246 regs = &ioarcb->add_data.u.regs;
5247
5248 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5249 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5250
5251 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5252 ipr_cmd->qc = qc;
5253 ipr_cmd->done = ipr_sata_done;
5254 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5255 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5256 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5257 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5258 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
5259
5260 ipr_build_ata_ioadl(ipr_cmd, qc);
5261 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5262 ipr_copy_sata_tf(regs, &qc->tf);
5263 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5264 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5265
5266 switch (qc->tf.protocol) {
5267 case ATA_PROT_NODATA:
5268 case ATA_PROT_PIO:
5269 break;
5270
5271 case ATA_PROT_DMA:
5272 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5273 break;
5274
5275 case ATA_PROT_ATAPI:
5276 case ATA_PROT_ATAPI_NODATA:
5277 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5278 break;
5279
5280 case ATA_PROT_ATAPI_DMA:
5281 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5282 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5283 break;
5284
5285 default:
5286 WARN_ON(1);
5287 return AC_ERR_INVALID;
5288 }
5289
5290 mb();
5291 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5292 ioa_cfg->regs.ioarrin_reg);
5293 return 0;
5294 }
5295
5296 /**
5297 * ipr_ata_check_status - Return last ATA status
5298 * @ap: ATA port
5299 *
5300 * Return value:
5301 * ATA status
5302 **/
5303 static u8 ipr_ata_check_status(struct ata_port *ap)
5304 {
5305 struct ipr_sata_port *sata_port = ap->private_data;
5306 return sata_port->ioasa.status;
5307 }
5308
5309 /**
5310 * ipr_ata_check_altstatus - Return last ATA altstatus
5311 * @ap: ATA port
5312 *
5313 * Return value:
5314 * Alt ATA status
5315 **/
5316 static u8 ipr_ata_check_altstatus(struct ata_port *ap)
5317 {
5318 struct ipr_sata_port *sata_port = ap->private_data;
5319 return sata_port->ioasa.alt_status;
5320 }
5321
5322 static struct ata_port_operations ipr_sata_ops = {
5323 .port_disable = ata_port_disable,
5324 .check_status = ipr_ata_check_status,
5325 .check_altstatus = ipr_ata_check_altstatus,
5326 .dev_select = ata_noop_dev_select,
5327 .phy_reset = ipr_ata_phy_reset,
5328 .post_internal_cmd = ipr_ata_post_internal,
5329 .tf_read = ipr_tf_read,
5330 .qc_prep = ata_noop_qc_prep,
5331 .qc_issue = ipr_qc_issue,
5332 .port_start = ata_sas_port_start,
5333 .port_stop = ata_sas_port_stop
5334 };
5335
5336 static struct ata_port_info sata_port_info = {
5337 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5338 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5339 .pio_mask = 0x10, /* pio4 */
5340 .mwdma_mask = 0x07,
5341 .udma_mask = 0x7f, /* udma0-6 */
5342 .port_ops = &ipr_sata_ops
5343 };
5344
5345 #ifdef CONFIG_PPC_PSERIES
5346 static const u16 ipr_blocked_processors[] = {
5347 PV_NORTHSTAR,
5348 PV_PULSAR,
5349 PV_POWER4,
5350 PV_ICESTAR,
5351 PV_SSTAR,
5352 PV_POWER4p,
5353 PV_630,
5354 PV_630p
5355 };
5356
5357 /**
5358 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5359 * @ioa_cfg: ioa cfg struct
5360 *
5361 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5362 * certain pSeries hardware. This function determines if the given
5363 * adapter is in one of these confgurations or not.
5364 *
5365 * Return value:
5366 * 1 if adapter is not supported / 0 if adapter is supported
5367 **/
5368 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5369 {
5370 int i;
5371
5372 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
5373 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5374 if (__is_processor(ipr_blocked_processors[i]))
5375 return 1;
5376 }
5377 }
5378 return 0;
5379 }
5380 #else
5381 #define ipr_invalid_adapter(ioa_cfg) 0
5382 #endif
5383
5384 /**
5385 * ipr_ioa_bringdown_done - IOA bring down completion.
5386 * @ipr_cmd: ipr command struct
5387 *
5388 * This function processes the completion of an adapter bring down.
5389 * It wakes any reset sleepers.
5390 *
5391 * Return value:
5392 * IPR_RC_JOB_RETURN
5393 **/
5394 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5395 {
5396 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5397
5398 ENTER;
5399 ioa_cfg->in_reset_reload = 0;
5400 ioa_cfg->reset_retries = 0;
5401 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5402 wake_up_all(&ioa_cfg->reset_wait_q);
5403
5404 spin_unlock_irq(ioa_cfg->host->host_lock);
5405 scsi_unblock_requests(ioa_cfg->host);
5406 spin_lock_irq(ioa_cfg->host->host_lock);
5407 LEAVE;
5408
5409 return IPR_RC_JOB_RETURN;
5410 }
5411
5412 /**
5413 * ipr_ioa_reset_done - IOA reset completion.
5414 * @ipr_cmd: ipr command struct
5415 *
5416 * This function processes the completion of an adapter reset.
5417 * It schedules any necessary mid-layer add/removes and
5418 * wakes any reset sleepers.
5419 *
5420 * Return value:
5421 * IPR_RC_JOB_RETURN
5422 **/
5423 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5424 {
5425 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5426 struct ipr_resource_entry *res;
5427 struct ipr_hostrcb *hostrcb, *temp;
5428 int i = 0;
5429
5430 ENTER;
5431 ioa_cfg->in_reset_reload = 0;
5432 ioa_cfg->allow_cmds = 1;
5433 ioa_cfg->reset_cmd = NULL;
5434 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
5435
5436 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5437 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5438 ipr_trace;
5439 break;
5440 }
5441 }
5442 schedule_work(&ioa_cfg->work_q);
5443
5444 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5445 list_del(&hostrcb->queue);
5446 if (i++ < IPR_NUM_LOG_HCAMS)
5447 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5448 else
5449 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5450 }
5451
5452 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
5453 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5454
5455 ioa_cfg->reset_retries = 0;
5456 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5457 wake_up_all(&ioa_cfg->reset_wait_q);
5458
5459 spin_unlock_irq(ioa_cfg->host->host_lock);
5460 scsi_unblock_requests(ioa_cfg->host);
5461 spin_lock_irq(ioa_cfg->host->host_lock);
5462
5463 if (!ioa_cfg->allow_cmds)
5464 scsi_block_requests(ioa_cfg->host);
5465
5466 LEAVE;
5467 return IPR_RC_JOB_RETURN;
5468 }
5469
5470 /**
5471 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5472 * @supported_dev: supported device struct
5473 * @vpids: vendor product id struct
5474 *
5475 * Return value:
5476 * none
5477 **/
5478 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5479 struct ipr_std_inq_vpids *vpids)
5480 {
5481 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5482 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5483 supported_dev->num_records = 1;
5484 supported_dev->data_length =
5485 cpu_to_be16(sizeof(struct ipr_supported_device));
5486 supported_dev->reserved = 0;
5487 }
5488
5489 /**
5490 * ipr_set_supported_devs - Send Set Supported Devices for a device
5491 * @ipr_cmd: ipr command struct
5492 *
5493 * This function send a Set Supported Devices to the adapter
5494 *
5495 * Return value:
5496 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5497 **/
5498 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5499 {
5500 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5501 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5502 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5503 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5504 struct ipr_resource_entry *res = ipr_cmd->u.res;
5505
5506 ipr_cmd->job_step = ipr_ioa_reset_done;
5507
5508 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
5509 if (!ipr_is_scsi_disk(res))
5510 continue;
5511
5512 ipr_cmd->u.res = res;
5513 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5514
5515 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5516 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5517 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5518
5519 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5520 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5521 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5522
5523 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5524 sizeof(struct ipr_supported_device));
5525 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5526 offsetof(struct ipr_misc_cbs, supp_dev));
5527 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5528 ioarcb->write_data_transfer_length =
5529 cpu_to_be32(sizeof(struct ipr_supported_device));
5530
5531 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5532 IPR_SET_SUP_DEVICE_TIMEOUT);
5533
5534 ipr_cmd->job_step = ipr_set_supported_devs;
5535 return IPR_RC_JOB_RETURN;
5536 }
5537
5538 return IPR_RC_JOB_CONTINUE;
5539 }
5540
5541 /**
5542 * ipr_setup_write_cache - Disable write cache if needed
5543 * @ipr_cmd: ipr command struct
5544 *
5545 * This function sets up adapters write cache to desired setting
5546 *
5547 * Return value:
5548 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5549 **/
5550 static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5551 {
5552 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5553
5554 ipr_cmd->job_step = ipr_set_supported_devs;
5555 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5556 struct ipr_resource_entry, queue);
5557
5558 if (ioa_cfg->cache_state != CACHE_DISABLED)
5559 return IPR_RC_JOB_CONTINUE;
5560
5561 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5562 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5563 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5564 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5565
5566 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5567
5568 return IPR_RC_JOB_RETURN;
5569 }
5570
5571 /**
5572 * ipr_get_mode_page - Locate specified mode page
5573 * @mode_pages: mode page buffer
5574 * @page_code: page code to find
5575 * @len: minimum required length for mode page
5576 *
5577 * Return value:
5578 * pointer to mode page / NULL on failure
5579 **/
5580 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5581 u32 page_code, u32 len)
5582 {
5583 struct ipr_mode_page_hdr *mode_hdr;
5584 u32 page_length;
5585 u32 length;
5586
5587 if (!mode_pages || (mode_pages->hdr.length == 0))
5588 return NULL;
5589
5590 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5591 mode_hdr = (struct ipr_mode_page_hdr *)
5592 (mode_pages->data + mode_pages->hdr.block_desc_len);
5593
5594 while (length) {
5595 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5596 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5597 return mode_hdr;
5598 break;
5599 } else {
5600 page_length = (sizeof(struct ipr_mode_page_hdr) +
5601 mode_hdr->page_length);
5602 length -= page_length;
5603 mode_hdr = (struct ipr_mode_page_hdr *)
5604 ((unsigned long)mode_hdr + page_length);
5605 }
5606 }
5607 return NULL;
5608 }
5609
5610 /**
5611 * ipr_check_term_power - Check for term power errors
5612 * @ioa_cfg: ioa config struct
5613 * @mode_pages: IOAFP mode pages buffer
5614 *
5615 * Check the IOAFP's mode page 28 for term power errors
5616 *
5617 * Return value:
5618 * nothing
5619 **/
5620 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5621 struct ipr_mode_pages *mode_pages)
5622 {
5623 int i;
5624 int entry_length;
5625 struct ipr_dev_bus_entry *bus;
5626 struct ipr_mode_page28 *mode_page;
5627
5628 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5629 sizeof(struct ipr_mode_page28));
5630
5631 entry_length = mode_page->entry_length;
5632
5633 bus = mode_page->bus;
5634
5635 for (i = 0; i < mode_page->num_entries; i++) {
5636 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5637 dev_err(&ioa_cfg->pdev->dev,
5638 "Term power is absent on scsi bus %d\n",
5639 bus->res_addr.bus);
5640 }
5641
5642 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5643 }
5644 }
5645
5646 /**
5647 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5648 * @ioa_cfg: ioa config struct
5649 *
5650 * Looks through the config table checking for SES devices. If
5651 * the SES device is in the SES table indicating a maximum SCSI
5652 * bus speed, the speed is limited for the bus.
5653 *
5654 * Return value:
5655 * none
5656 **/
5657 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5658 {
5659 u32 max_xfer_rate;
5660 int i;
5661
5662 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5663 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5664 ioa_cfg->bus_attr[i].bus_width);
5665
5666 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5667 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5668 }
5669 }
5670
5671 /**
5672 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5673 * @ioa_cfg: ioa config struct
5674 * @mode_pages: mode page 28 buffer
5675 *
5676 * Updates mode page 28 based on driver configuration
5677 *
5678 * Return value:
5679 * none
5680 **/
5681 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5682 struct ipr_mode_pages *mode_pages)
5683 {
5684 int i, entry_length;
5685 struct ipr_dev_bus_entry *bus;
5686 struct ipr_bus_attributes *bus_attr;
5687 struct ipr_mode_page28 *mode_page;
5688
5689 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5690 sizeof(struct ipr_mode_page28));
5691
5692 entry_length = mode_page->entry_length;
5693
5694 /* Loop for each device bus entry */
5695 for (i = 0, bus = mode_page->bus;
5696 i < mode_page->num_entries;
5697 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5698 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5699 dev_err(&ioa_cfg->pdev->dev,
5700 "Invalid resource address reported: 0x%08X\n",
5701 IPR_GET_PHYS_LOC(bus->res_addr));
5702 continue;
5703 }
5704
5705 bus_attr = &ioa_cfg->bus_attr[i];
5706 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5707 bus->bus_width = bus_attr->bus_width;
5708 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5709 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5710 if (bus_attr->qas_enabled)
5711 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5712 else
5713 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5714 }
5715 }
5716
5717 /**
5718 * ipr_build_mode_select - Build a mode select command
5719 * @ipr_cmd: ipr command struct
5720 * @res_handle: resource handle to send command to
5721 * @parm: Byte 2 of Mode Sense command
5722 * @dma_addr: DMA buffer address
5723 * @xfer_len: data transfer length
5724 *
5725 * Return value:
5726 * none
5727 **/
5728 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5729 __be32 res_handle, u8 parm, u32 dma_addr,
5730 u8 xfer_len)
5731 {
5732 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5733 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5734
5735 ioarcb->res_handle = res_handle;
5736 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5737 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5738 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5739 ioarcb->cmd_pkt.cdb[1] = parm;
5740 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5741
5742 ioadl->flags_and_data_len =
5743 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5744 ioadl->address = cpu_to_be32(dma_addr);
5745 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5746 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5747 }
5748
5749 /**
5750 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5751 * @ipr_cmd: ipr command struct
5752 *
5753 * This function sets up the SCSI bus attributes and sends
5754 * a Mode Select for Page 28 to activate them.
5755 *
5756 * Return value:
5757 * IPR_RC_JOB_RETURN
5758 **/
5759 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5760 {
5761 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5762 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5763 int length;
5764
5765 ENTER;
5766 ipr_scsi_bus_speed_limit(ioa_cfg);
5767 ipr_check_term_power(ioa_cfg, mode_pages);
5768 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5769 length = mode_pages->hdr.length + 1;
5770 mode_pages->hdr.length = 0;
5771
5772 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5773 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5774 length);
5775
5776 ipr_cmd->job_step = ipr_setup_write_cache;
5777 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5778
5779 LEAVE;
5780 return IPR_RC_JOB_RETURN;
5781 }
5782
5783 /**
5784 * ipr_build_mode_sense - Builds a mode sense command
5785 * @ipr_cmd: ipr command struct
5786 * @res: resource entry struct
5787 * @parm: Byte 2 of mode sense command
5788 * @dma_addr: DMA address of mode sense buffer
5789 * @xfer_len: Size of DMA buffer
5790 *
5791 * Return value:
5792 * none
5793 **/
5794 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5795 __be32 res_handle,
5796 u8 parm, u32 dma_addr, u8 xfer_len)
5797 {
5798 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5799 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5800
5801 ioarcb->res_handle = res_handle;
5802 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5803 ioarcb->cmd_pkt.cdb[2] = parm;
5804 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5805 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5806
5807 ioadl->flags_and_data_len =
5808 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5809 ioadl->address = cpu_to_be32(dma_addr);
5810 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5811 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5812 }
5813
5814 /**
5815 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5816 * @ipr_cmd: ipr command struct
5817 *
5818 * This function handles the failure of an IOA bringup command.
5819 *
5820 * Return value:
5821 * IPR_RC_JOB_RETURN
5822 **/
5823 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5824 {
5825 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5826 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5827
5828 dev_err(&ioa_cfg->pdev->dev,
5829 "0x%02X failed with IOASC: 0x%08X\n",
5830 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5831
5832 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5833 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5834 return IPR_RC_JOB_RETURN;
5835 }
5836
5837 /**
5838 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5839 * @ipr_cmd: ipr command struct
5840 *
5841 * This function handles the failure of a Mode Sense to the IOAFP.
5842 * Some adapters do not handle all mode pages.
5843 *
5844 * Return value:
5845 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5846 **/
5847 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5848 {
5849 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5850
5851 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5852 ipr_cmd->job_step = ipr_setup_write_cache;
5853 return IPR_RC_JOB_CONTINUE;
5854 }
5855
5856 return ipr_reset_cmd_failed(ipr_cmd);
5857 }
5858
5859 /**
5860 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5861 * @ipr_cmd: ipr command struct
5862 *
5863 * This function send a Page 28 mode sense to the IOA to
5864 * retrieve SCSI bus attributes.
5865 *
5866 * Return value:
5867 * IPR_RC_JOB_RETURN
5868 **/
5869 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5870 {
5871 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5872
5873 ENTER;
5874 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5875 0x28, ioa_cfg->vpd_cbs_dma +
5876 offsetof(struct ipr_misc_cbs, mode_pages),
5877 sizeof(struct ipr_mode_pages));
5878
5879 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
5880 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
5881
5882 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5883
5884 LEAVE;
5885 return IPR_RC_JOB_RETURN;
5886 }
5887
5888 /**
5889 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
5890 * @ipr_cmd: ipr command struct
5891 *
5892 * This function enables dual IOA RAID support if possible.
5893 *
5894 * Return value:
5895 * IPR_RC_JOB_RETURN
5896 **/
5897 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
5898 {
5899 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5900 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5901 struct ipr_mode_page24 *mode_page;
5902 int length;
5903
5904 ENTER;
5905 mode_page = ipr_get_mode_page(mode_pages, 0x24,
5906 sizeof(struct ipr_mode_page24));
5907
5908 if (mode_page)
5909 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
5910
5911 length = mode_pages->hdr.length + 1;
5912 mode_pages->hdr.length = 0;
5913
5914 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5915 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5916 length);
5917
5918 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5919 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5920
5921 LEAVE;
5922 return IPR_RC_JOB_RETURN;
5923 }
5924
5925 /**
5926 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
5927 * @ipr_cmd: ipr command struct
5928 *
5929 * This function handles the failure of a Mode Sense to the IOAFP.
5930 * Some adapters do not handle all mode pages.
5931 *
5932 * Return value:
5933 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5934 **/
5935 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
5936 {
5937 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5938
5939 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5940 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5941 return IPR_RC_JOB_CONTINUE;
5942 }
5943
5944 return ipr_reset_cmd_failed(ipr_cmd);
5945 }
5946
5947 /**
5948 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
5949 * @ipr_cmd: ipr command struct
5950 *
5951 * This function send a mode sense to the IOA to retrieve
5952 * the IOA Advanced Function Control mode page.
5953 *
5954 * Return value:
5955 * IPR_RC_JOB_RETURN
5956 **/
5957 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
5958 {
5959 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5960
5961 ENTER;
5962 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5963 0x24, ioa_cfg->vpd_cbs_dma +
5964 offsetof(struct ipr_misc_cbs, mode_pages),
5965 sizeof(struct ipr_mode_pages));
5966
5967 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
5968 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
5969
5970 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5971
5972 LEAVE;
5973 return IPR_RC_JOB_RETURN;
5974 }
5975
5976 /**
5977 * ipr_init_res_table - Initialize the resource table
5978 * @ipr_cmd: ipr command struct
5979 *
5980 * This function looks through the existing resource table, comparing
5981 * it with the config table. This function will take care of old/new
5982 * devices and schedule adding/removing them from the mid-layer
5983 * as appropriate.
5984 *
5985 * Return value:
5986 * IPR_RC_JOB_CONTINUE
5987 **/
5988 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5989 {
5990 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5991 struct ipr_resource_entry *res, *temp;
5992 struct ipr_config_table_entry *cfgte;
5993 int found, i;
5994 LIST_HEAD(old_res);
5995
5996 ENTER;
5997 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5998 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5999
6000 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
6001 list_move_tail(&res->queue, &old_res);
6002
6003 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
6004 cfgte = &ioa_cfg->cfg_table->dev[i];
6005 found = 0;
6006
6007 list_for_each_entry_safe(res, temp, &old_res, queue) {
6008 if (!memcmp(&res->cfgte.res_addr,
6009 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
6010 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6011 found = 1;
6012 break;
6013 }
6014 }
6015
6016 if (!found) {
6017 if (list_empty(&ioa_cfg->free_res_q)) {
6018 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
6019 break;
6020 }
6021
6022 found = 1;
6023 res = list_entry(ioa_cfg->free_res_q.next,
6024 struct ipr_resource_entry, queue);
6025 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6026 ipr_init_res_entry(res);
6027 res->add_to_ml = 1;
6028 }
6029
6030 if (found)
6031 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
6032 }
6033
6034 list_for_each_entry_safe(res, temp, &old_res, queue) {
6035 if (res->sdev) {
6036 res->del_from_ml = 1;
6037 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
6038 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6039 } else {
6040 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
6041 }
6042 }
6043
6044 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6045 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
6046 else
6047 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6048
6049 LEAVE;
6050 return IPR_RC_JOB_CONTINUE;
6051 }
6052
6053 /**
6054 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
6055 * @ipr_cmd: ipr command struct
6056 *
6057 * This function sends a Query IOA Configuration command
6058 * to the adapter to retrieve the IOA configuration table.
6059 *
6060 * Return value:
6061 * IPR_RC_JOB_RETURN
6062 **/
6063 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6064 {
6065 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6066 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6067 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6068 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
6069 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6070
6071 ENTER;
6072 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6073 ioa_cfg->dual_raid = 1;
6074 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6075 ucode_vpd->major_release, ucode_vpd->card_type,
6076 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6077 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6078 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6079
6080 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
6081 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
6082 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
6083
6084 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6085 ioarcb->read_data_transfer_length =
6086 cpu_to_be32(sizeof(struct ipr_config_table));
6087
6088 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
6089 ioadl->flags_and_data_len =
6090 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
6091
6092 ipr_cmd->job_step = ipr_init_res_table;
6093
6094 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6095
6096 LEAVE;
6097 return IPR_RC_JOB_RETURN;
6098 }
6099
6100 /**
6101 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6102 * @ipr_cmd: ipr command struct
6103 *
6104 * This utility function sends an inquiry to the adapter.
6105 *
6106 * Return value:
6107 * none
6108 **/
6109 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
6110 u32 dma_addr, u8 xfer_len)
6111 {
6112 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6113 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6114
6115 ENTER;
6116 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6117 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6118
6119 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6120 ioarcb->cmd_pkt.cdb[1] = flags;
6121 ioarcb->cmd_pkt.cdb[2] = page;
6122 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6123
6124 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6125 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
6126
6127 ioadl->address = cpu_to_be32(dma_addr);
6128 ioadl->flags_and_data_len =
6129 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
6130
6131 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6132 LEAVE;
6133 }
6134
6135 /**
6136 * ipr_inquiry_page_supported - Is the given inquiry page supported
6137 * @page0: inquiry page 0 buffer
6138 * @page: page code.
6139 *
6140 * This function determines if the specified inquiry page is supported.
6141 *
6142 * Return value:
6143 * 1 if page is supported / 0 if not
6144 **/
6145 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
6146 {
6147 int i;
6148
6149 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
6150 if (page0->page[i] == page)
6151 return 1;
6152
6153 return 0;
6154 }
6155
6156 /**
6157 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
6158 * @ipr_cmd: ipr command struct
6159 *
6160 * This function sends a Page 0xD0 inquiry to the adapter
6161 * to retrieve adapter capabilities.
6162 *
6163 * Return value:
6164 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6165 **/
6166 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
6167 {
6168 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6169 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6170 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6171
6172 ENTER;
6173 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
6174 memset(cap, 0, sizeof(*cap));
6175
6176 if (ipr_inquiry_page_supported(page0, 0xD0)) {
6177 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
6178 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
6179 sizeof(struct ipr_inquiry_cap));
6180 return IPR_RC_JOB_RETURN;
6181 }
6182
6183 LEAVE;
6184 return IPR_RC_JOB_CONTINUE;
6185 }
6186
6187 /**
6188 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
6189 * @ipr_cmd: ipr command struct
6190 *
6191 * This function sends a Page 3 inquiry to the adapter
6192 * to retrieve software VPD information.
6193 *
6194 * Return value:
6195 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6196 **/
6197 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
6198 {
6199 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6200 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6201
6202 ENTER;
6203
6204 if (!ipr_inquiry_page_supported(page0, 1))
6205 ioa_cfg->cache_state = CACHE_NONE;
6206
6207 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
6208
6209 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
6210 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
6211 sizeof(struct ipr_inquiry_page3));
6212
6213 LEAVE;
6214 return IPR_RC_JOB_RETURN;
6215 }
6216
6217 /**
6218 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
6219 * @ipr_cmd: ipr command struct
6220 *
6221 * This function sends a Page 0 inquiry to the adapter
6222 * to retrieve supported inquiry pages.
6223 *
6224 * Return value:
6225 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6226 **/
6227 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
6228 {
6229 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6230 char type[5];
6231
6232 ENTER;
6233
6234 /* Grab the type out of the VPD and store it away */
6235 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
6236 type[4] = '\0';
6237 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6238
6239 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
6240
6241 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6242 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6243 sizeof(struct ipr_inquiry_page0));
6244
6245 LEAVE;
6246 return IPR_RC_JOB_RETURN;
6247 }
6248
6249 /**
6250 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6251 * @ipr_cmd: ipr command struct
6252 *
6253 * This function sends a standard inquiry to the adapter.
6254 *
6255 * Return value:
6256 * IPR_RC_JOB_RETURN
6257 **/
6258 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6259 {
6260 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6261
6262 ENTER;
6263 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
6264
6265 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6266 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6267 sizeof(struct ipr_ioa_vpd));
6268
6269 LEAVE;
6270 return IPR_RC_JOB_RETURN;
6271 }
6272
6273 /**
6274 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6275 * @ipr_cmd: ipr command struct
6276 *
6277 * This function send an Identify Host Request Response Queue
6278 * command to establish the HRRQ with the adapter.
6279 *
6280 * Return value:
6281 * IPR_RC_JOB_RETURN
6282 **/
6283 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6284 {
6285 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6286 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6287
6288 ENTER;
6289 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6290
6291 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6292 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6293
6294 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6295 ioarcb->cmd_pkt.cdb[2] =
6296 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6297 ioarcb->cmd_pkt.cdb[3] =
6298 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6299 ioarcb->cmd_pkt.cdb[4] =
6300 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6301 ioarcb->cmd_pkt.cdb[5] =
6302 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6303 ioarcb->cmd_pkt.cdb[7] =
6304 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6305 ioarcb->cmd_pkt.cdb[8] =
6306 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6307
6308 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6309
6310 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6311
6312 LEAVE;
6313 return IPR_RC_JOB_RETURN;
6314 }
6315
6316 /**
6317 * ipr_reset_timer_done - Adapter reset timer function
6318 * @ipr_cmd: ipr command struct
6319 *
6320 * Description: This function is used in adapter reset processing
6321 * for timing events. If the reset_cmd pointer in the IOA
6322 * config struct is not this adapter's we are doing nested
6323 * resets and fail_all_ops will take care of freeing the
6324 * command block.
6325 *
6326 * Return value:
6327 * none
6328 **/
6329 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6330 {
6331 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6332 unsigned long lock_flags = 0;
6333
6334 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6335
6336 if (ioa_cfg->reset_cmd == ipr_cmd) {
6337 list_del(&ipr_cmd->queue);
6338 ipr_cmd->done(ipr_cmd);
6339 }
6340
6341 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6342 }
6343
6344 /**
6345 * ipr_reset_start_timer - Start a timer for adapter reset job
6346 * @ipr_cmd: ipr command struct
6347 * @timeout: timeout value
6348 *
6349 * Description: This function is used in adapter reset processing
6350 * for timing events. If the reset_cmd pointer in the IOA
6351 * config struct is not this adapter's we are doing nested
6352 * resets and fail_all_ops will take care of freeing the
6353 * command block.
6354 *
6355 * Return value:
6356 * none
6357 **/
6358 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6359 unsigned long timeout)
6360 {
6361 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6362 ipr_cmd->done = ipr_reset_ioa_job;
6363
6364 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6365 ipr_cmd->timer.expires = jiffies + timeout;
6366 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6367 add_timer(&ipr_cmd->timer);
6368 }
6369
6370 /**
6371 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6372 * @ioa_cfg: ioa cfg struct
6373 *
6374 * Return value:
6375 * nothing
6376 **/
6377 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6378 {
6379 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6380
6381 /* Initialize Host RRQ pointers */
6382 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6383 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6384 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6385 ioa_cfg->toggle_bit = 1;
6386
6387 /* Zero out config table */
6388 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6389 }
6390
6391 /**
6392 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6393 * @ipr_cmd: ipr command struct
6394 *
6395 * This function reinitializes some control blocks and
6396 * enables destructive diagnostics on the adapter.
6397 *
6398 * Return value:
6399 * IPR_RC_JOB_RETURN
6400 **/
6401 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6402 {
6403 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6404 volatile u32 int_reg;
6405
6406 ENTER;
6407 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6408 ipr_init_ioa_mem(ioa_cfg);
6409
6410 ioa_cfg->allow_interrupts = 1;
6411 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6412
6413 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6414 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6415 ioa_cfg->regs.clr_interrupt_mask_reg);
6416 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6417 return IPR_RC_JOB_CONTINUE;
6418 }
6419
6420 /* Enable destructive diagnostics on IOA */
6421 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
6422
6423 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6424 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6425
6426 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6427
6428 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6429 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
6430 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6431 ipr_cmd->done = ipr_reset_ioa_job;
6432 add_timer(&ipr_cmd->timer);
6433 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6434
6435 LEAVE;
6436 return IPR_RC_JOB_RETURN;
6437 }
6438
6439 /**
6440 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6441 * @ipr_cmd: ipr command struct
6442 *
6443 * This function is invoked when an adapter dump has run out
6444 * of processing time.
6445 *
6446 * Return value:
6447 * IPR_RC_JOB_CONTINUE
6448 **/
6449 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6450 {
6451 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6452
6453 if (ioa_cfg->sdt_state == GET_DUMP)
6454 ioa_cfg->sdt_state = ABORT_DUMP;
6455
6456 ipr_cmd->job_step = ipr_reset_alert;
6457
6458 return IPR_RC_JOB_CONTINUE;
6459 }
6460
6461 /**
6462 * ipr_unit_check_no_data - Log a unit check/no data error log
6463 * @ioa_cfg: ioa config struct
6464 *
6465 * Logs an error indicating the adapter unit checked, but for some
6466 * reason, we were unable to fetch the unit check buffer.
6467 *
6468 * Return value:
6469 * nothing
6470 **/
6471 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6472 {
6473 ioa_cfg->errors_logged++;
6474 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6475 }
6476
6477 /**
6478 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6479 * @ioa_cfg: ioa config struct
6480 *
6481 * Fetches the unit check buffer from the adapter by clocking the data
6482 * through the mailbox register.
6483 *
6484 * Return value:
6485 * nothing
6486 **/
6487 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6488 {
6489 unsigned long mailbox;
6490 struct ipr_hostrcb *hostrcb;
6491 struct ipr_uc_sdt sdt;
6492 int rc, length;
6493 u32 ioasc;
6494
6495 mailbox = readl(ioa_cfg->ioa_mailbox);
6496
6497 if (!ipr_sdt_is_fmt2(mailbox)) {
6498 ipr_unit_check_no_data(ioa_cfg);
6499 return;
6500 }
6501
6502 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6503 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6504 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6505
6506 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6507 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6508 ipr_unit_check_no_data(ioa_cfg);
6509 return;
6510 }
6511
6512 /* Find length of the first sdt entry (UC buffer) */
6513 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6514 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6515
6516 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6517 struct ipr_hostrcb, queue);
6518 list_del(&hostrcb->queue);
6519 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6520
6521 rc = ipr_get_ldump_data_section(ioa_cfg,
6522 be32_to_cpu(sdt.entry[0].bar_str_offset),
6523 (__be32 *)&hostrcb->hcam,
6524 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6525
6526 if (!rc) {
6527 ipr_handle_log_data(ioa_cfg, hostrcb);
6528 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
6529 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
6530 ioa_cfg->sdt_state == GET_DUMP)
6531 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
6532 } else
6533 ipr_unit_check_no_data(ioa_cfg);
6534
6535 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6536 }
6537
6538 /**
6539 * ipr_reset_restore_cfg_space - Restore PCI config space.
6540 * @ipr_cmd: ipr command struct
6541 *
6542 * Description: This function restores the saved PCI config space of
6543 * the adapter, fails all outstanding ops back to the callers, and
6544 * fetches the dump/unit check if applicable to this reset.
6545 *
6546 * Return value:
6547 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6548 **/
6549 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6550 {
6551 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6552 int rc;
6553
6554 ENTER;
6555 rc = pci_restore_state(ioa_cfg->pdev);
6556
6557 if (rc != PCIBIOS_SUCCESSFUL) {
6558 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6559 return IPR_RC_JOB_CONTINUE;
6560 }
6561
6562 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6563 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6564 return IPR_RC_JOB_CONTINUE;
6565 }
6566
6567 ipr_fail_all_ops(ioa_cfg);
6568
6569 if (ioa_cfg->ioa_unit_checked) {
6570 ioa_cfg->ioa_unit_checked = 0;
6571 ipr_get_unit_check_buffer(ioa_cfg);
6572 ipr_cmd->job_step = ipr_reset_alert;
6573 ipr_reset_start_timer(ipr_cmd, 0);
6574 return IPR_RC_JOB_RETURN;
6575 }
6576
6577 if (ioa_cfg->in_ioa_bringdown) {
6578 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6579 } else {
6580 ipr_cmd->job_step = ipr_reset_enable_ioa;
6581
6582 if (GET_DUMP == ioa_cfg->sdt_state) {
6583 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6584 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6585 schedule_work(&ioa_cfg->work_q);
6586 return IPR_RC_JOB_RETURN;
6587 }
6588 }
6589
6590 ENTER;
6591 return IPR_RC_JOB_CONTINUE;
6592 }
6593
6594 /**
6595 * ipr_reset_bist_done - BIST has completed on the adapter.
6596 * @ipr_cmd: ipr command struct
6597 *
6598 * Description: Unblock config space and resume the reset process.
6599 *
6600 * Return value:
6601 * IPR_RC_JOB_CONTINUE
6602 **/
6603 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6604 {
6605 ENTER;
6606 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6607 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6608 LEAVE;
6609 return IPR_RC_JOB_CONTINUE;
6610 }
6611
6612 /**
6613 * ipr_reset_start_bist - Run BIST on the adapter.
6614 * @ipr_cmd: ipr command struct
6615 *
6616 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6617 *
6618 * Return value:
6619 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6620 **/
6621 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6622 {
6623 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6624 int rc;
6625
6626 ENTER;
6627 pci_block_user_cfg_access(ioa_cfg->pdev);
6628 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6629
6630 if (rc != PCIBIOS_SUCCESSFUL) {
6631 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6632 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6633 rc = IPR_RC_JOB_CONTINUE;
6634 } else {
6635 ipr_cmd->job_step = ipr_reset_bist_done;
6636 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6637 rc = IPR_RC_JOB_RETURN;
6638 }
6639
6640 LEAVE;
6641 return rc;
6642 }
6643
6644 /**
6645 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
6646 * @ipr_cmd: ipr command struct
6647 *
6648 * Description: This clears PCI reset to the adapter and delays two seconds.
6649 *
6650 * Return value:
6651 * IPR_RC_JOB_RETURN
6652 **/
6653 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
6654 {
6655 ENTER;
6656 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
6657 ipr_cmd->job_step = ipr_reset_bist_done;
6658 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6659 LEAVE;
6660 return IPR_RC_JOB_RETURN;
6661 }
6662
6663 /**
6664 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
6665 * @ipr_cmd: ipr command struct
6666 *
6667 * Description: This asserts PCI reset to the adapter.
6668 *
6669 * Return value:
6670 * IPR_RC_JOB_RETURN
6671 **/
6672 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
6673 {
6674 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6675 struct pci_dev *pdev = ioa_cfg->pdev;
6676
6677 ENTER;
6678 pci_block_user_cfg_access(pdev);
6679 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
6680 ipr_cmd->job_step = ipr_reset_slot_reset_done;
6681 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
6682 LEAVE;
6683 return IPR_RC_JOB_RETURN;
6684 }
6685
6686 /**
6687 * ipr_reset_allowed - Query whether or not IOA can be reset
6688 * @ioa_cfg: ioa config struct
6689 *
6690 * Return value:
6691 * 0 if reset not allowed / non-zero if reset is allowed
6692 **/
6693 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6694 {
6695 volatile u32 temp_reg;
6696
6697 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6698 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6699 }
6700
6701 /**
6702 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6703 * @ipr_cmd: ipr command struct
6704 *
6705 * Description: This function waits for adapter permission to run BIST,
6706 * then runs BIST. If the adapter does not give permission after a
6707 * reasonable time, we will reset the adapter anyway. The impact of
6708 * resetting the adapter without warning the adapter is the risk of
6709 * losing the persistent error log on the adapter. If the adapter is
6710 * reset while it is writing to the flash on the adapter, the flash
6711 * segment will have bad ECC and be zeroed.
6712 *
6713 * Return value:
6714 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6715 **/
6716 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6717 {
6718 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6719 int rc = IPR_RC_JOB_RETURN;
6720
6721 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6722 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6723 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6724 } else {
6725 ipr_cmd->job_step = ioa_cfg->reset;
6726 rc = IPR_RC_JOB_CONTINUE;
6727 }
6728
6729 return rc;
6730 }
6731
6732 /**
6733 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6734 * @ipr_cmd: ipr command struct
6735 *
6736 * Description: This function alerts the adapter that it will be reset.
6737 * If memory space is not currently enabled, proceed directly
6738 * to running BIST on the adapter. The timer must always be started
6739 * so we guarantee we do not run BIST from ipr_isr.
6740 *
6741 * Return value:
6742 * IPR_RC_JOB_RETURN
6743 **/
6744 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6745 {
6746 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6747 u16 cmd_reg;
6748 int rc;
6749
6750 ENTER;
6751 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6752
6753 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6754 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6755 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6756 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6757 } else {
6758 ipr_cmd->job_step = ioa_cfg->reset;
6759 }
6760
6761 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6762 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6763
6764 LEAVE;
6765 return IPR_RC_JOB_RETURN;
6766 }
6767
6768 /**
6769 * ipr_reset_ucode_download_done - Microcode download completion
6770 * @ipr_cmd: ipr command struct
6771 *
6772 * Description: This function unmaps the microcode download buffer.
6773 *
6774 * Return value:
6775 * IPR_RC_JOB_CONTINUE
6776 **/
6777 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6778 {
6779 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6780 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6781
6782 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6783 sglist->num_sg, DMA_TO_DEVICE);
6784
6785 ipr_cmd->job_step = ipr_reset_alert;
6786 return IPR_RC_JOB_CONTINUE;
6787 }
6788
6789 /**
6790 * ipr_reset_ucode_download - Download microcode to the adapter
6791 * @ipr_cmd: ipr command struct
6792 *
6793 * Description: This function checks to see if it there is microcode
6794 * to download to the adapter. If there is, a download is performed.
6795 *
6796 * Return value:
6797 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6798 **/
6799 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6800 {
6801 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6802 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6803
6804 ENTER;
6805 ipr_cmd->job_step = ipr_reset_alert;
6806
6807 if (!sglist)
6808 return IPR_RC_JOB_CONTINUE;
6809
6810 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6811 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6812 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6813 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6814 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6815 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6816 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6817
6818 ipr_build_ucode_ioadl(ipr_cmd, sglist);
6819 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6820
6821 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6822 IPR_WRITE_BUFFER_TIMEOUT);
6823
6824 LEAVE;
6825 return IPR_RC_JOB_RETURN;
6826 }
6827
6828 /**
6829 * ipr_reset_shutdown_ioa - Shutdown the adapter
6830 * @ipr_cmd: ipr command struct
6831 *
6832 * Description: This function issues an adapter shutdown of the
6833 * specified type to the specified adapter as part of the
6834 * adapter reset job.
6835 *
6836 * Return value:
6837 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6838 **/
6839 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6840 {
6841 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6842 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6843 unsigned long timeout;
6844 int rc = IPR_RC_JOB_CONTINUE;
6845
6846 ENTER;
6847 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6848 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6849 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6850 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6851 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6852
6853 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
6854 timeout = IPR_SHUTDOWN_TIMEOUT;
6855 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6856 timeout = IPR_INTERNAL_TIMEOUT;
6857 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6858 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
6859 else
6860 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
6861
6862 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6863
6864 rc = IPR_RC_JOB_RETURN;
6865 ipr_cmd->job_step = ipr_reset_ucode_download;
6866 } else
6867 ipr_cmd->job_step = ipr_reset_alert;
6868
6869 LEAVE;
6870 return rc;
6871 }
6872
6873 /**
6874 * ipr_reset_ioa_job - Adapter reset job
6875 * @ipr_cmd: ipr command struct
6876 *
6877 * Description: This function is the job router for the adapter reset job.
6878 *
6879 * Return value:
6880 * none
6881 **/
6882 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6883 {
6884 u32 rc, ioasc;
6885 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6886
6887 do {
6888 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6889
6890 if (ioa_cfg->reset_cmd != ipr_cmd) {
6891 /*
6892 * We are doing nested adapter resets and this is
6893 * not the current reset job.
6894 */
6895 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6896 return;
6897 }
6898
6899 if (IPR_IOASC_SENSE_KEY(ioasc)) {
6900 rc = ipr_cmd->job_step_failed(ipr_cmd);
6901 if (rc == IPR_RC_JOB_RETURN)
6902 return;
6903 }
6904
6905 ipr_reinit_ipr_cmnd(ipr_cmd);
6906 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
6907 rc = ipr_cmd->job_step(ipr_cmd);
6908 } while(rc == IPR_RC_JOB_CONTINUE);
6909 }
6910
6911 /**
6912 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6913 * @ioa_cfg: ioa config struct
6914 * @job_step: first job step of reset job
6915 * @shutdown_type: shutdown type
6916 *
6917 * Description: This function will initiate the reset of the given adapter
6918 * starting at the selected job step.
6919 * If the caller needs to wait on the completion of the reset,
6920 * the caller must sleep on the reset_wait_q.
6921 *
6922 * Return value:
6923 * none
6924 **/
6925 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6926 int (*job_step) (struct ipr_cmnd *),
6927 enum ipr_shutdown_type shutdown_type)
6928 {
6929 struct ipr_cmnd *ipr_cmd;
6930
6931 ioa_cfg->in_reset_reload = 1;
6932 ioa_cfg->allow_cmds = 0;
6933 scsi_block_requests(ioa_cfg->host);
6934
6935 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6936 ioa_cfg->reset_cmd = ipr_cmd;
6937 ipr_cmd->job_step = job_step;
6938 ipr_cmd->u.shutdown_type = shutdown_type;
6939
6940 ipr_reset_ioa_job(ipr_cmd);
6941 }
6942
6943 /**
6944 * ipr_initiate_ioa_reset - Initiate an adapter reset
6945 * @ioa_cfg: ioa config struct
6946 * @shutdown_type: shutdown type
6947 *
6948 * Description: This function will initiate the reset of the given adapter.
6949 * If the caller needs to wait on the completion of the reset,
6950 * the caller must sleep on the reset_wait_q.
6951 *
6952 * Return value:
6953 * none
6954 **/
6955 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6956 enum ipr_shutdown_type shutdown_type)
6957 {
6958 if (ioa_cfg->ioa_is_dead)
6959 return;
6960
6961 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6962 ioa_cfg->sdt_state = ABORT_DUMP;
6963
6964 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6965 dev_err(&ioa_cfg->pdev->dev,
6966 "IOA taken offline - error recovery failed\n");
6967
6968 ioa_cfg->reset_retries = 0;
6969 ioa_cfg->ioa_is_dead = 1;
6970
6971 if (ioa_cfg->in_ioa_bringdown) {
6972 ioa_cfg->reset_cmd = NULL;
6973 ioa_cfg->in_reset_reload = 0;
6974 ipr_fail_all_ops(ioa_cfg);
6975 wake_up_all(&ioa_cfg->reset_wait_q);
6976
6977 spin_unlock_irq(ioa_cfg->host->host_lock);
6978 scsi_unblock_requests(ioa_cfg->host);
6979 spin_lock_irq(ioa_cfg->host->host_lock);
6980 return;
6981 } else {
6982 ioa_cfg->in_ioa_bringdown = 1;
6983 shutdown_type = IPR_SHUTDOWN_NONE;
6984 }
6985 }
6986
6987 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6988 shutdown_type);
6989 }
6990
6991 /**
6992 * ipr_reset_freeze - Hold off all I/O activity
6993 * @ipr_cmd: ipr command struct
6994 *
6995 * Description: If the PCI slot is frozen, hold off all I/O
6996 * activity; then, as soon as the slot is available again,
6997 * initiate an adapter reset.
6998 */
6999 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
7000 {
7001 /* Disallow new interrupts, avoid loop */
7002 ipr_cmd->ioa_cfg->allow_interrupts = 0;
7003 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
7004 ipr_cmd->done = ipr_reset_ioa_job;
7005 return IPR_RC_JOB_RETURN;
7006 }
7007
7008 /**
7009 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
7010 * @pdev: PCI device struct
7011 *
7012 * Description: This routine is called to tell us that the PCI bus
7013 * is down. Can't do anything here, except put the device driver
7014 * into a holding pattern, waiting for the PCI bus to come back.
7015 */
7016 static void ipr_pci_frozen(struct pci_dev *pdev)
7017 {
7018 unsigned long flags = 0;
7019 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7020
7021 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7022 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
7023 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7024 }
7025
7026 /**
7027 * ipr_pci_slot_reset - Called when PCI slot has been reset.
7028 * @pdev: PCI device struct
7029 *
7030 * Description: This routine is called by the pci error recovery
7031 * code after the PCI slot has been reset, just before we
7032 * should resume normal operations.
7033 */
7034 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
7035 {
7036 unsigned long flags = 0;
7037 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7038
7039 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7040 if (ioa_cfg->needs_warm_reset)
7041 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7042 else
7043 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
7044 IPR_SHUTDOWN_NONE);
7045 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7046 return PCI_ERS_RESULT_RECOVERED;
7047 }
7048
7049 /**
7050 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
7051 * @pdev: PCI device struct
7052 *
7053 * Description: This routine is called when the PCI bus has
7054 * permanently failed.
7055 */
7056 static void ipr_pci_perm_failure(struct pci_dev *pdev)
7057 {
7058 unsigned long flags = 0;
7059 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7060
7061 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7062 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7063 ioa_cfg->sdt_state = ABORT_DUMP;
7064 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
7065 ioa_cfg->in_ioa_bringdown = 1;
7066 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7067 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7068 }
7069
7070 /**
7071 * ipr_pci_error_detected - Called when a PCI error is detected.
7072 * @pdev: PCI device struct
7073 * @state: PCI channel state
7074 *
7075 * Description: Called when a PCI error is detected.
7076 *
7077 * Return value:
7078 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
7079 */
7080 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
7081 pci_channel_state_t state)
7082 {
7083 switch (state) {
7084 case pci_channel_io_frozen:
7085 ipr_pci_frozen(pdev);
7086 return PCI_ERS_RESULT_NEED_RESET;
7087 case pci_channel_io_perm_failure:
7088 ipr_pci_perm_failure(pdev);
7089 return PCI_ERS_RESULT_DISCONNECT;
7090 break;
7091 default:
7092 break;
7093 }
7094 return PCI_ERS_RESULT_NEED_RESET;
7095 }
7096
7097 /**
7098 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
7099 * @ioa_cfg: ioa cfg struct
7100 *
7101 * Description: This is the second phase of adapter intialization
7102 * This function takes care of initilizing the adapter to the point
7103 * where it can accept new commands.
7104
7105 * Return value:
7106 * 0 on sucess / -EIO on failure
7107 **/
7108 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
7109 {
7110 int rc = 0;
7111 unsigned long host_lock_flags = 0;
7112
7113 ENTER;
7114 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7115 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
7116 if (ioa_cfg->needs_hard_reset) {
7117 ioa_cfg->needs_hard_reset = 0;
7118 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7119 } else
7120 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
7121 IPR_SHUTDOWN_NONE);
7122
7123 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7124 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7125 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7126
7127 if (ioa_cfg->ioa_is_dead) {
7128 rc = -EIO;
7129 } else if (ipr_invalid_adapter(ioa_cfg)) {
7130 if (!ipr_testmode)
7131 rc = -EIO;
7132
7133 dev_err(&ioa_cfg->pdev->dev,
7134 "Adapter not supported in this hardware configuration.\n");
7135 }
7136
7137 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7138
7139 LEAVE;
7140 return rc;
7141 }
7142
7143 /**
7144 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
7145 * @ioa_cfg: ioa config struct
7146 *
7147 * Return value:
7148 * none
7149 **/
7150 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7151 {
7152 int i;
7153
7154 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7155 if (ioa_cfg->ipr_cmnd_list[i])
7156 pci_pool_free(ioa_cfg->ipr_cmd_pool,
7157 ioa_cfg->ipr_cmnd_list[i],
7158 ioa_cfg->ipr_cmnd_list_dma[i]);
7159
7160 ioa_cfg->ipr_cmnd_list[i] = NULL;
7161 }
7162
7163 if (ioa_cfg->ipr_cmd_pool)
7164 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
7165
7166 ioa_cfg->ipr_cmd_pool = NULL;
7167 }
7168
7169 /**
7170 * ipr_free_mem - Frees memory allocated for an adapter
7171 * @ioa_cfg: ioa cfg struct
7172 *
7173 * Return value:
7174 * nothing
7175 **/
7176 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
7177 {
7178 int i;
7179
7180 kfree(ioa_cfg->res_entries);
7181 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
7182 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7183 ipr_free_cmd_blks(ioa_cfg);
7184 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7185 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7186 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
7187 ioa_cfg->cfg_table,
7188 ioa_cfg->cfg_table_dma);
7189
7190 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7191 pci_free_consistent(ioa_cfg->pdev,
7192 sizeof(struct ipr_hostrcb),
7193 ioa_cfg->hostrcb[i],
7194 ioa_cfg->hostrcb_dma[i]);
7195 }
7196
7197 ipr_free_dump(ioa_cfg);
7198 kfree(ioa_cfg->trace);
7199 }
7200
7201 /**
7202 * ipr_free_all_resources - Free all allocated resources for an adapter.
7203 * @ipr_cmd: ipr command struct
7204 *
7205 * This function frees all allocated resources for the
7206 * specified adapter.
7207 *
7208 * Return value:
7209 * none
7210 **/
7211 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
7212 {
7213 struct pci_dev *pdev = ioa_cfg->pdev;
7214
7215 ENTER;
7216 free_irq(pdev->irq, ioa_cfg);
7217 iounmap(ioa_cfg->hdw_dma_regs);
7218 pci_release_regions(pdev);
7219 ipr_free_mem(ioa_cfg);
7220 scsi_host_put(ioa_cfg->host);
7221 pci_disable_device(pdev);
7222 LEAVE;
7223 }
7224
7225 /**
7226 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
7227 * @ioa_cfg: ioa config struct
7228 *
7229 * Return value:
7230 * 0 on success / -ENOMEM on allocation failure
7231 **/
7232 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7233 {
7234 struct ipr_cmnd *ipr_cmd;
7235 struct ipr_ioarcb *ioarcb;
7236 dma_addr_t dma_addr;
7237 int i;
7238
7239 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
7240 sizeof(struct ipr_cmnd), 8, 0);
7241
7242 if (!ioa_cfg->ipr_cmd_pool)
7243 return -ENOMEM;
7244
7245 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7246 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
7247
7248 if (!ipr_cmd) {
7249 ipr_free_cmd_blks(ioa_cfg);
7250 return -ENOMEM;
7251 }
7252
7253 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
7254 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
7255 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
7256
7257 ioarcb = &ipr_cmd->ioarcb;
7258 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
7259 ioarcb->host_response_handle = cpu_to_be32(i << 2);
7260 ioarcb->write_ioadl_addr =
7261 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
7262 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
7263 ioarcb->ioasa_host_pci_addr =
7264 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
7265 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
7266 ipr_cmd->cmd_index = i;
7267 ipr_cmd->ioa_cfg = ioa_cfg;
7268 ipr_cmd->sense_buffer_dma = dma_addr +
7269 offsetof(struct ipr_cmnd, sense_buffer);
7270
7271 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7272 }
7273
7274 return 0;
7275 }
7276
7277 /**
7278 * ipr_alloc_mem - Allocate memory for an adapter
7279 * @ioa_cfg: ioa config struct
7280 *
7281 * Return value:
7282 * 0 on success / non-zero for error
7283 **/
7284 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
7285 {
7286 struct pci_dev *pdev = ioa_cfg->pdev;
7287 int i, rc = -ENOMEM;
7288
7289 ENTER;
7290 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
7291 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7292
7293 if (!ioa_cfg->res_entries)
7294 goto out;
7295
7296 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7297 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7298
7299 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7300 sizeof(struct ipr_misc_cbs),
7301 &ioa_cfg->vpd_cbs_dma);
7302
7303 if (!ioa_cfg->vpd_cbs)
7304 goto out_free_res_entries;
7305
7306 if (ipr_alloc_cmd_blks(ioa_cfg))
7307 goto out_free_vpd_cbs;
7308
7309 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7310 sizeof(u32) * IPR_NUM_CMD_BLKS,
7311 &ioa_cfg->host_rrq_dma);
7312
7313 if (!ioa_cfg->host_rrq)
7314 goto out_ipr_free_cmd_blocks;
7315
7316 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7317 sizeof(struct ipr_config_table),
7318 &ioa_cfg->cfg_table_dma);
7319
7320 if (!ioa_cfg->cfg_table)
7321 goto out_free_host_rrq;
7322
7323 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7324 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7325 sizeof(struct ipr_hostrcb),
7326 &ioa_cfg->hostrcb_dma[i]);
7327
7328 if (!ioa_cfg->hostrcb[i])
7329 goto out_free_hostrcb_dma;
7330
7331 ioa_cfg->hostrcb[i]->hostrcb_dma =
7332 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
7333 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
7334 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7335 }
7336
7337 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
7338 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7339
7340 if (!ioa_cfg->trace)
7341 goto out_free_hostrcb_dma;
7342
7343 rc = 0;
7344 out:
7345 LEAVE;
7346 return rc;
7347
7348 out_free_hostrcb_dma:
7349 while (i-- > 0) {
7350 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7351 ioa_cfg->hostrcb[i],
7352 ioa_cfg->hostrcb_dma[i]);
7353 }
7354 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7355 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7356 out_free_host_rrq:
7357 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7358 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7359 out_ipr_free_cmd_blocks:
7360 ipr_free_cmd_blks(ioa_cfg);
7361 out_free_vpd_cbs:
7362 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7363 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7364 out_free_res_entries:
7365 kfree(ioa_cfg->res_entries);
7366 goto out;
7367 }
7368
7369 /**
7370 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7371 * @ioa_cfg: ioa config struct
7372 *
7373 * Return value:
7374 * none
7375 **/
7376 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7377 {
7378 int i;
7379
7380 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7381 ioa_cfg->bus_attr[i].bus = i;
7382 ioa_cfg->bus_attr[i].qas_enabled = 0;
7383 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7384 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7385 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7386 else
7387 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7388 }
7389 }
7390
7391 /**
7392 * ipr_init_ioa_cfg - Initialize IOA config struct
7393 * @ioa_cfg: ioa config struct
7394 * @host: scsi host struct
7395 * @pdev: PCI dev struct
7396 *
7397 * Return value:
7398 * none
7399 **/
7400 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7401 struct Scsi_Host *host, struct pci_dev *pdev)
7402 {
7403 const struct ipr_interrupt_offsets *p;
7404 struct ipr_interrupts *t;
7405 void __iomem *base;
7406
7407 ioa_cfg->host = host;
7408 ioa_cfg->pdev = pdev;
7409 ioa_cfg->log_level = ipr_log_level;
7410 ioa_cfg->doorbell = IPR_DOORBELL;
7411 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7412 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7413 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7414 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7415 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7416 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7417 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7418 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7419
7420 INIT_LIST_HEAD(&ioa_cfg->free_q);
7421 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7422 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7423 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7424 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7425 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
7426 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
7427 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7428 ioa_cfg->sdt_state = INACTIVE;
7429 if (ipr_enable_cache)
7430 ioa_cfg->cache_state = CACHE_ENABLED;
7431 else
7432 ioa_cfg->cache_state = CACHE_DISABLED;
7433
7434 ipr_initialize_bus_attr(ioa_cfg);
7435
7436 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7437 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7438 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7439 host->unique_id = host->host_no;
7440 host->max_cmd_len = IPR_MAX_CDB_LEN;
7441 pci_set_drvdata(pdev, ioa_cfg);
7442
7443 p = &ioa_cfg->chip_cfg->regs;
7444 t = &ioa_cfg->regs;
7445 base = ioa_cfg->hdw_dma_regs;
7446
7447 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7448 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7449 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7450 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7451 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7452 t->ioarrin_reg = base + p->ioarrin_reg;
7453 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7454 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7455 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7456 }
7457
7458 /**
7459 * ipr_get_chip_cfg - Find adapter chip configuration
7460 * @dev_id: PCI device id struct
7461 *
7462 * Return value:
7463 * ptr to chip config on success / NULL on failure
7464 **/
7465 static const struct ipr_chip_cfg_t * __devinit
7466 ipr_get_chip_cfg(const struct pci_device_id *dev_id)
7467 {
7468 int i;
7469
7470 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7471 if (ipr_chip[i].vendor == dev_id->vendor &&
7472 ipr_chip[i].device == dev_id->device)
7473 return ipr_chip[i].cfg;
7474 return NULL;
7475 }
7476
7477 /**
7478 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7479 * @pdev: PCI device struct
7480 * @dev_id: PCI device id struct
7481 *
7482 * Return value:
7483 * 0 on success / non-zero on failure
7484 **/
7485 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7486 const struct pci_device_id *dev_id)
7487 {
7488 struct ipr_ioa_cfg *ioa_cfg;
7489 struct Scsi_Host *host;
7490 unsigned long ipr_regs_pci;
7491 void __iomem *ipr_regs;
7492 int rc = PCIBIOS_SUCCESSFUL;
7493 volatile u32 mask, uproc, interrupts;
7494
7495 ENTER;
7496
7497 if ((rc = pci_enable_device(pdev))) {
7498 dev_err(&pdev->dev, "Cannot enable adapter\n");
7499 goto out;
7500 }
7501
7502 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7503
7504 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7505
7506 if (!host) {
7507 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7508 rc = -ENOMEM;
7509 goto out_disable;
7510 }
7511
7512 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7513 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
7514 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7515 sata_port_info.flags, &ipr_sata_ops);
7516
7517 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7518
7519 if (!ioa_cfg->chip_cfg) {
7520 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7521 dev_id->vendor, dev_id->device);
7522 goto out_scsi_host_put;
7523 }
7524
7525 if (ipr_transop_timeout)
7526 ioa_cfg->transop_timeout = ipr_transop_timeout;
7527 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
7528 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
7529 else
7530 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
7531
7532 ioa_cfg->revid = pdev->revision;
7533
7534 ipr_regs_pci = pci_resource_start(pdev, 0);
7535
7536 rc = pci_request_regions(pdev, IPR_NAME);
7537 if (rc < 0) {
7538 dev_err(&pdev->dev,
7539 "Couldn't register memory range of registers\n");
7540 goto out_scsi_host_put;
7541 }
7542
7543 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
7544
7545 if (!ipr_regs) {
7546 dev_err(&pdev->dev,
7547 "Couldn't map memory range of registers\n");
7548 rc = -ENOMEM;
7549 goto out_release_regions;
7550 }
7551
7552 ioa_cfg->hdw_dma_regs = ipr_regs;
7553 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7554 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7555
7556 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7557
7558 pci_set_master(pdev);
7559
7560 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7561 if (rc < 0) {
7562 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7563 goto cleanup_nomem;
7564 }
7565
7566 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7567 ioa_cfg->chip_cfg->cache_line_size);
7568
7569 if (rc != PCIBIOS_SUCCESSFUL) {
7570 dev_err(&pdev->dev, "Write of cache line size failed\n");
7571 rc = -EIO;
7572 goto cleanup_nomem;
7573 }
7574
7575 /* Save away PCI config space for use following IOA reset */
7576 rc = pci_save_state(pdev);
7577
7578 if (rc != PCIBIOS_SUCCESSFUL) {
7579 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7580 rc = -EIO;
7581 goto cleanup_nomem;
7582 }
7583
7584 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7585 goto cleanup_nomem;
7586
7587 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7588 goto cleanup_nomem;
7589
7590 rc = ipr_alloc_mem(ioa_cfg);
7591 if (rc < 0) {
7592 dev_err(&pdev->dev,
7593 "Couldn't allocate enough memory for device driver!\n");
7594 goto cleanup_nomem;
7595 }
7596
7597 /*
7598 * If HRRQ updated interrupt is not masked, or reset alert is set,
7599 * the card is in an unknown state and needs a hard reset
7600 */
7601 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7602 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
7603 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7604 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7605 ioa_cfg->needs_hard_reset = 1;
7606 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
7607 ioa_cfg->needs_hard_reset = 1;
7608 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
7609 ioa_cfg->ioa_unit_checked = 1;
7610
7611 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
7612 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
7613
7614 if (rc) {
7615 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7616 pdev->irq, rc);
7617 goto cleanup_nolog;
7618 }
7619
7620 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
7621 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
7622 ioa_cfg->needs_warm_reset = 1;
7623 ioa_cfg->reset = ipr_reset_slot_reset;
7624 } else
7625 ioa_cfg->reset = ipr_reset_start_bist;
7626
7627 spin_lock(&ipr_driver_lock);
7628 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7629 spin_unlock(&ipr_driver_lock);
7630
7631 LEAVE;
7632 out:
7633 return rc;
7634
7635 cleanup_nolog:
7636 ipr_free_mem(ioa_cfg);
7637 cleanup_nomem:
7638 iounmap(ipr_regs);
7639 out_release_regions:
7640 pci_release_regions(pdev);
7641 out_scsi_host_put:
7642 scsi_host_put(host);
7643 out_disable:
7644 pci_disable_device(pdev);
7645 goto out;
7646 }
7647
7648 /**
7649 * ipr_scan_vsets - Scans for VSET devices
7650 * @ioa_cfg: ioa config struct
7651 *
7652 * Description: Since the VSET resources do not follow SAM in that we can have
7653 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7654 *
7655 * Return value:
7656 * none
7657 **/
7658 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7659 {
7660 int target, lun;
7661
7662 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7663 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7664 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7665 }
7666
7667 /**
7668 * ipr_initiate_ioa_bringdown - Bring down an adapter
7669 * @ioa_cfg: ioa config struct
7670 * @shutdown_type: shutdown type
7671 *
7672 * Description: This function will initiate bringing down the adapter.
7673 * This consists of issuing an IOA shutdown to the adapter
7674 * to flush the cache, and running BIST.
7675 * If the caller needs to wait on the completion of the reset,
7676 * the caller must sleep on the reset_wait_q.
7677 *
7678 * Return value:
7679 * none
7680 **/
7681 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7682 enum ipr_shutdown_type shutdown_type)
7683 {
7684 ENTER;
7685 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7686 ioa_cfg->sdt_state = ABORT_DUMP;
7687 ioa_cfg->reset_retries = 0;
7688 ioa_cfg->in_ioa_bringdown = 1;
7689 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7690 LEAVE;
7691 }
7692
7693 /**
7694 * __ipr_remove - Remove a single adapter
7695 * @pdev: pci device struct
7696 *
7697 * Adapter hot plug remove entry point.
7698 *
7699 * Return value:
7700 * none
7701 **/
7702 static void __ipr_remove(struct pci_dev *pdev)
7703 {
7704 unsigned long host_lock_flags = 0;
7705 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7706 ENTER;
7707
7708 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7709 while(ioa_cfg->in_reset_reload) {
7710 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7711 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7712 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7713 }
7714
7715 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7716
7717 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7718 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7719 flush_scheduled_work();
7720 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7721
7722 spin_lock(&ipr_driver_lock);
7723 list_del(&ioa_cfg->queue);
7724 spin_unlock(&ipr_driver_lock);
7725
7726 if (ioa_cfg->sdt_state == ABORT_DUMP)
7727 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7728 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7729
7730 ipr_free_all_resources(ioa_cfg);
7731
7732 LEAVE;
7733 }
7734
7735 /**
7736 * ipr_remove - IOA hot plug remove entry point
7737 * @pdev: pci device struct
7738 *
7739 * Adapter hot plug remove entry point.
7740 *
7741 * Return value:
7742 * none
7743 **/
7744 static void ipr_remove(struct pci_dev *pdev)
7745 {
7746 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7747
7748 ENTER;
7749
7750 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7751 &ipr_trace_attr);
7752 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7753 &ipr_dump_attr);
7754 scsi_remove_host(ioa_cfg->host);
7755
7756 __ipr_remove(pdev);
7757
7758 LEAVE;
7759 }
7760
7761 /**
7762 * ipr_probe - Adapter hot plug add entry point
7763 *
7764 * Return value:
7765 * 0 on success / non-zero on failure
7766 **/
7767 static int __devinit ipr_probe(struct pci_dev *pdev,
7768 const struct pci_device_id *dev_id)
7769 {
7770 struct ipr_ioa_cfg *ioa_cfg;
7771 int rc;
7772
7773 rc = ipr_probe_ioa(pdev, dev_id);
7774
7775 if (rc)
7776 return rc;
7777
7778 ioa_cfg = pci_get_drvdata(pdev);
7779 rc = ipr_probe_ioa_part2(ioa_cfg);
7780
7781 if (rc) {
7782 __ipr_remove(pdev);
7783 return rc;
7784 }
7785
7786 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7787
7788 if (rc) {
7789 __ipr_remove(pdev);
7790 return rc;
7791 }
7792
7793 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7794 &ipr_trace_attr);
7795
7796 if (rc) {
7797 scsi_remove_host(ioa_cfg->host);
7798 __ipr_remove(pdev);
7799 return rc;
7800 }
7801
7802 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7803 &ipr_dump_attr);
7804
7805 if (rc) {
7806 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7807 &ipr_trace_attr);
7808 scsi_remove_host(ioa_cfg->host);
7809 __ipr_remove(pdev);
7810 return rc;
7811 }
7812
7813 scsi_scan_host(ioa_cfg->host);
7814 ipr_scan_vsets(ioa_cfg);
7815 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7816 ioa_cfg->allow_ml_add_del = 1;
7817 ioa_cfg->host->max_channel = IPR_VSET_BUS;
7818 schedule_work(&ioa_cfg->work_q);
7819 return 0;
7820 }
7821
7822 /**
7823 * ipr_shutdown - Shutdown handler.
7824 * @pdev: pci device struct
7825 *
7826 * This function is invoked upon system shutdown/reboot. It will issue
7827 * an adapter shutdown to the adapter to flush the write cache.
7828 *
7829 * Return value:
7830 * none
7831 **/
7832 static void ipr_shutdown(struct pci_dev *pdev)
7833 {
7834 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7835 unsigned long lock_flags = 0;
7836
7837 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7838 while(ioa_cfg->in_reset_reload) {
7839 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7840 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7841 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7842 }
7843
7844 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7845 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7846 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7847 }
7848
7849 static struct pci_device_id ipr_pci_table[] __devinitdata = {
7850 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7851 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
7852 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7853 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
7854 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7855 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
7856 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7857 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
7858 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7859 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
7860 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7861 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
7862 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7863 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
7864 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7865 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
7866 IPR_USE_LONG_TRANSOP_TIMEOUT },
7867 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7868 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7869 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7870 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7871 IPR_USE_LONG_TRANSOP_TIMEOUT },
7872 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7873 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7874 IPR_USE_LONG_TRANSOP_TIMEOUT },
7875 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7876 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7877 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7878 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7879 IPR_USE_LONG_TRANSOP_TIMEOUT},
7880 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7881 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7882 IPR_USE_LONG_TRANSOP_TIMEOUT },
7883 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7884 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
7885 IPR_USE_LONG_TRANSOP_TIMEOUT },
7886 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7887 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0,
7888 IPR_USE_LONG_TRANSOP_TIMEOUT },
7889 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7890 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
7891 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7892 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
7893 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
7894 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
7895 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
7896 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7897 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
7898 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7899 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
7900 IPR_USE_LONG_TRANSOP_TIMEOUT },
7901 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7902 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
7903 IPR_USE_LONG_TRANSOP_TIMEOUT },
7904 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E,
7905 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0,
7906 IPR_USE_LONG_TRANSOP_TIMEOUT },
7907 { }
7908 };
7909 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7910
7911 static struct pci_error_handlers ipr_err_handler = {
7912 .error_detected = ipr_pci_error_detected,
7913 .slot_reset = ipr_pci_slot_reset,
7914 };
7915
7916 static struct pci_driver ipr_driver = {
7917 .name = IPR_NAME,
7918 .id_table = ipr_pci_table,
7919 .probe = ipr_probe,
7920 .remove = ipr_remove,
7921 .shutdown = ipr_shutdown,
7922 .err_handler = &ipr_err_handler,
7923 .dynids.use_driver_data = 1
7924 };
7925
7926 /**
7927 * ipr_init - Module entry point
7928 *
7929 * Return value:
7930 * 0 on success / negative value on failure
7931 **/
7932 static int __init ipr_init(void)
7933 {
7934 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7935 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7936
7937 return pci_register_driver(&ipr_driver);
7938 }
7939
7940 /**
7941 * ipr_exit - Module unload
7942 *
7943 * Module unload entry point.
7944 *
7945 * Return value:
7946 * none
7947 **/
7948 static void __exit ipr_exit(void)
7949 {
7950 pci_unregister_driver(&ipr_driver);
7951 }
7952
7953 module_init(ipr_init);
7954 module_exit(ipr_exit);
AMDTP streaming driver for the Linux FireWire stack (Juju)