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x86/amd-iommu: Add per IOMMU reference counting
[linux/fpc-iii.git] / drivers / scsi / ipr.c
blob5f045505a1f4a48eb5f5a1d17ff61508f7cadf7e
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 <linux/hdreg.h>
75 #include <asm/io.h>
76 #include <asm/irq.h>
77 #include <asm/processor.h>
78 #include <scsi/scsi.h>
79 #include <scsi/scsi_host.h>
80 #include <scsi/scsi_tcq.h>
81 #include <scsi/scsi_eh.h>
82 #include <scsi/scsi_cmnd.h>
83 #include "ipr.h"
84
85 /*
86 * Global Data
87 */
88 static LIST_HEAD(ipr_ioa_head);
89 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
90 static unsigned int ipr_max_speed = 1;
91 static int ipr_testmode = 0;
92 static unsigned int ipr_fastfail = 0;
93 static unsigned int ipr_transop_timeout = 0;
94 static unsigned int ipr_enable_cache = 1;
95 static unsigned int ipr_debug = 0;
96 static unsigned int ipr_dual_ioa_raid = 1;
97 static DEFINE_SPINLOCK(ipr_driver_lock);
98
99 /* This table describes the differences between DMA controller chips */
100 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
101 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
102 .mailbox = 0x0042C,
103 .cache_line_size = 0x20,
104 {
105 .set_interrupt_mask_reg = 0x0022C,
106 .clr_interrupt_mask_reg = 0x00230,
107 .sense_interrupt_mask_reg = 0x0022C,
108 .clr_interrupt_reg = 0x00228,
109 .sense_interrupt_reg = 0x00224,
110 .ioarrin_reg = 0x00404,
111 .sense_uproc_interrupt_reg = 0x00214,
112 .set_uproc_interrupt_reg = 0x00214,
113 .clr_uproc_interrupt_reg = 0x00218
114 }
115 },
116 { /* Snipe and Scamp */
117 .mailbox = 0x0052C,
118 .cache_line_size = 0x20,
119 {
120 .set_interrupt_mask_reg = 0x00288,
121 .clr_interrupt_mask_reg = 0x0028C,
122 .sense_interrupt_mask_reg = 0x00288,
123 .clr_interrupt_reg = 0x00284,
124 .sense_interrupt_reg = 0x00280,
125 .ioarrin_reg = 0x00504,
126 .sense_uproc_interrupt_reg = 0x00290,
127 .set_uproc_interrupt_reg = 0x00290,
128 .clr_uproc_interrupt_reg = 0x00294
129 }
130 },
131 };
132
133 static const struct ipr_chip_t ipr_chip[] = {
134 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, &ipr_chip_cfg[0] },
135 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, &ipr_chip_cfg[0] },
136 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, &ipr_chip_cfg[0] },
137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, &ipr_chip_cfg[0] },
138 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, &ipr_chip_cfg[0] },
139 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, &ipr_chip_cfg[1] },
140 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, &ipr_chip_cfg[1] }
141 };
142
143 static int ipr_max_bus_speeds [] = {
144 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
145 };
146
147 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
148 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
149 module_param_named(max_speed, ipr_max_speed, uint, 0);
150 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
151 module_param_named(log_level, ipr_log_level, uint, 0);
152 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
153 module_param_named(testmode, ipr_testmode, int, 0);
154 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
155 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
156 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
157 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
158 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
159 module_param_named(enable_cache, ipr_enable_cache, int, 0);
160 MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
161 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
162 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
163 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
164 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
165 MODULE_LICENSE("GPL");
166 MODULE_VERSION(IPR_DRIVER_VERSION);
167
168 /* A constant array of IOASCs/URCs/Error Messages */
169 static const
170 struct ipr_error_table_t ipr_error_table[] = {
171 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
172 "8155: An unknown error was received"},
173 {0x00330000, 0, 0,
174 "Soft underlength error"},
175 {0x005A0000, 0, 0,
176 "Command to be cancelled not found"},
177 {0x00808000, 0, 0,
178 "Qualified success"},
179 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
180 "FFFE: Soft device bus error recovered by the IOA"},
181 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
182 "4101: Soft device bus fabric error"},
183 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
184 "FFF9: Device sector reassign successful"},
185 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
186 "FFF7: Media error recovered by device rewrite procedures"},
187 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
188 "7001: IOA sector reassignment successful"},
189 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
190 "FFF9: Soft media error. Sector reassignment recommended"},
191 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
192 "FFF7: Media error recovered by IOA rewrite procedures"},
193 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
194 "FF3D: Soft PCI bus error recovered by the IOA"},
195 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
196 "FFF6: Device hardware error recovered by the IOA"},
197 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
198 "FFF6: Device hardware error recovered by the device"},
199 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
200 "FF3D: Soft IOA error recovered by the IOA"},
201 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
202 "FFFA: Undefined device response recovered by the IOA"},
203 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
204 "FFF6: Device bus error, message or command phase"},
205 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
206 "FFFE: Task Management Function failed"},
207 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
208 "FFF6: Failure prediction threshold exceeded"},
209 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
210 "8009: Impending cache battery pack failure"},
211 {0x02040400, 0, 0,
212 "34FF: Disk device format in progress"},
213 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
214 "9070: IOA requested reset"},
215 {0x023F0000, 0, 0,
216 "Synchronization required"},
217 {0x024E0000, 0, 0,
218 "No ready, IOA shutdown"},
219 {0x025A0000, 0, 0,
220 "Not ready, IOA has been shutdown"},
221 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
222 "3020: Storage subsystem configuration error"},
223 {0x03110B00, 0, 0,
224 "FFF5: Medium error, data unreadable, recommend reassign"},
225 {0x03110C00, 0, 0,
226 "7000: Medium error, data unreadable, do not reassign"},
227 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
228 "FFF3: Disk media format bad"},
229 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
230 "3002: Addressed device failed to respond to selection"},
231 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
232 "3100: Device bus error"},
233 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
234 "3109: IOA timed out a device command"},
235 {0x04088000, 0, 0,
236 "3120: SCSI bus is not operational"},
237 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
238 "4100: Hard device bus fabric error"},
239 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
240 "9000: IOA reserved area data check"},
241 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
242 "9001: IOA reserved area invalid data pattern"},
243 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
244 "9002: IOA reserved area LRC error"},
245 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
246 "102E: Out of alternate sectors for disk storage"},
247 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
248 "FFF4: Data transfer underlength error"},
249 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
250 "FFF4: Data transfer overlength error"},
251 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
252 "3400: Logical unit failure"},
253 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
254 "FFF4: Device microcode is corrupt"},
255 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
256 "8150: PCI bus error"},
257 {0x04430000, 1, 0,
258 "Unsupported device bus message received"},
259 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
260 "FFF4: Disk device problem"},
261 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
262 "8150: Permanent IOA failure"},
263 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
264 "3010: Disk device returned wrong response to IOA"},
265 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
266 "8151: IOA microcode error"},
267 {0x04448500, 0, 0,
268 "Device bus status error"},
269 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
270 "8157: IOA error requiring IOA reset to recover"},
271 {0x04448700, 0, 0,
272 "ATA device status error"},
273 {0x04490000, 0, 0,
274 "Message reject received from the device"},
275 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
276 "8008: A permanent cache battery pack failure occurred"},
277 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
278 "9090: Disk unit has been modified after the last known status"},
279 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
280 "9081: IOA detected device error"},
281 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
282 "9082: IOA detected device error"},
283 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
284 "3110: Device bus error, message or command phase"},
285 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
286 "3110: SAS Command / Task Management Function failed"},
287 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
288 "9091: Incorrect hardware configuration change has been detected"},
289 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
290 "9073: Invalid multi-adapter configuration"},
291 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
292 "4010: Incorrect connection between cascaded expanders"},
293 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
294 "4020: Connections exceed IOA design limits"},
295 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
296 "4030: Incorrect multipath connection"},
297 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
298 "4110: Unsupported enclosure function"},
299 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
300 "FFF4: Command to logical unit failed"},
301 {0x05240000, 1, 0,
302 "Illegal request, invalid request type or request packet"},
303 {0x05250000, 0, 0,
304 "Illegal request, invalid resource handle"},
305 {0x05258000, 0, 0,
306 "Illegal request, commands not allowed to this device"},
307 {0x05258100, 0, 0,
308 "Illegal request, command not allowed to a secondary adapter"},
309 {0x05260000, 0, 0,
310 "Illegal request, invalid field in parameter list"},
311 {0x05260100, 0, 0,
312 "Illegal request, parameter not supported"},
313 {0x05260200, 0, 0,
314 "Illegal request, parameter value invalid"},
315 {0x052C0000, 0, 0,
316 "Illegal request, command sequence error"},
317 {0x052C8000, 1, 0,
318 "Illegal request, dual adapter support not enabled"},
319 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
320 "9031: Array protection temporarily suspended, protection resuming"},
321 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
322 "9040: Array protection temporarily suspended, protection resuming"},
323 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
324 "3140: Device bus not ready to ready transition"},
325 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
326 "FFFB: SCSI bus was reset"},
327 {0x06290500, 0, 0,
328 "FFFE: SCSI bus transition to single ended"},
329 {0x06290600, 0, 0,
330 "FFFE: SCSI bus transition to LVD"},
331 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
332 "FFFB: SCSI bus was reset by another initiator"},
333 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
334 "3029: A device replacement has occurred"},
335 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
336 "9051: IOA cache data exists for a missing or failed device"},
337 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
338 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
339 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
340 "9025: Disk unit is not supported at its physical location"},
341 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
342 "3020: IOA detected a SCSI bus configuration error"},
343 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
344 "3150: SCSI bus configuration error"},
345 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
346 "9074: Asymmetric advanced function disk configuration"},
347 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
348 "4040: Incomplete multipath connection between IOA and enclosure"},
349 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
350 "4041: Incomplete multipath connection between enclosure and device"},
351 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
352 "9075: Incomplete multipath connection between IOA and remote IOA"},
353 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
354 "9076: Configuration error, missing remote IOA"},
355 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
356 "4050: Enclosure does not support a required multipath function"},
357 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
358 "4070: Logically bad block written on device"},
359 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
360 "9041: Array protection temporarily suspended"},
361 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
362 "9042: Corrupt array parity detected on specified device"},
363 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
364 "9030: Array no longer protected due to missing or failed disk unit"},
365 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
366 "9071: Link operational transition"},
367 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
368 "9072: Link not operational transition"},
369 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
370 "9032: Array exposed but still protected"},
371 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
372 "70DD: Device forced failed by disrupt device command"},
373 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
374 "4061: Multipath redundancy level got better"},
375 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
376 "4060: Multipath redundancy level got worse"},
377 {0x07270000, 0, 0,
378 "Failure due to other device"},
379 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
380 "9008: IOA does not support functions expected by devices"},
381 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
382 "9010: Cache data associated with attached devices cannot be found"},
383 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
384 "9011: Cache data belongs to devices other than those attached"},
385 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
386 "9020: Array missing 2 or more devices with only 1 device present"},
387 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
388 "9021: Array missing 2 or more devices with 2 or more devices present"},
389 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
390 "9022: Exposed array is missing a required device"},
391 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
392 "9023: Array member(s) not at required physical locations"},
393 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
394 "9024: Array not functional due to present hardware configuration"},
395 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
396 "9026: Array not functional due to present hardware configuration"},
397 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
398 "9027: Array is missing a device and parity is out of sync"},
399 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
400 "9028: Maximum number of arrays already exist"},
401 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
402 "9050: Required cache data cannot be located for a disk unit"},
403 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
404 "9052: Cache data exists for a device that has been modified"},
405 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
406 "9054: IOA resources not available due to previous problems"},
407 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
408 "9092: Disk unit requires initialization before use"},
409 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
410 "9029: Incorrect hardware configuration change has been detected"},
411 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
412 "9060: One or more disk pairs are missing from an array"},
413 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
414 "9061: One or more disks are missing from an array"},
415 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
416 "9062: One or more disks are missing from an array"},
417 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
418 "9063: Maximum number of functional arrays has been exceeded"},
419 {0x0B260000, 0, 0,
420 "Aborted command, invalid descriptor"},
421 {0x0B5A0000, 0, 0,
422 "Command terminated by host"}
423 };
424
425 static const struct ipr_ses_table_entry ipr_ses_table[] = {
426 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
427 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
428 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
429 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
430 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
431 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
432 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
433 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
434 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
435 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
436 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
437 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
438 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
439 };
440
441 /*
442 * Function Prototypes
443 */
444 static int ipr_reset_alert(struct ipr_cmnd *);
445 static void ipr_process_ccn(struct ipr_cmnd *);
446 static void ipr_process_error(struct ipr_cmnd *);
447 static void ipr_reset_ioa_job(struct ipr_cmnd *);
448 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
449 enum ipr_shutdown_type);
450
451 #ifdef CONFIG_SCSI_IPR_TRACE
452 /**
453 * ipr_trc_hook - Add a trace entry to the driver trace
454 * @ipr_cmd: ipr command struct
455 * @type: trace type
456 * @add_data: additional data
457 *
458 * Return value:
459 * none
460 **/
461 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
462 u8 type, u32 add_data)
463 {
464 struct ipr_trace_entry *trace_entry;
465 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
466
467 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
468 trace_entry->time = jiffies;
469 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
470 trace_entry->type = type;
471 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
472 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
473 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
474 trace_entry->u.add_data = add_data;
475 }
476 #else
477 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
478 #endif
479
480 /**
481 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
482 * @ipr_cmd: ipr command struct
483 *
484 * Return value:
485 * none
486 **/
487 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
488 {
489 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
490 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
491 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
492
493 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
494 ioarcb->write_data_transfer_length = 0;
495 ioarcb->read_data_transfer_length = 0;
496 ioarcb->write_ioadl_len = 0;
497 ioarcb->read_ioadl_len = 0;
498 ioarcb->write_ioadl_addr =
499 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
500 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
501 ioasa->ioasc = 0;
502 ioasa->residual_data_len = 0;
503 ioasa->u.gata.status = 0;
504
505 ipr_cmd->scsi_cmd = NULL;
506 ipr_cmd->qc = NULL;
507 ipr_cmd->sense_buffer[0] = 0;
508 ipr_cmd->dma_use_sg = 0;
509 }
510
511 /**
512 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
513 * @ipr_cmd: ipr command struct
514 *
515 * Return value:
516 * none
517 **/
518 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
519 {
520 ipr_reinit_ipr_cmnd(ipr_cmd);
521 ipr_cmd->u.scratch = 0;
522 ipr_cmd->sibling = NULL;
523 init_timer(&ipr_cmd->timer);
524 }
525
526 /**
527 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
528 * @ioa_cfg: ioa config struct
529 *
530 * Return value:
531 * pointer to ipr command struct
532 **/
533 static
534 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
535 {
536 struct ipr_cmnd *ipr_cmd;
537
538 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
539 list_del(&ipr_cmd->queue);
540 ipr_init_ipr_cmnd(ipr_cmd);
541
542 return ipr_cmd;
543 }
544
545 /**
546 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
547 * @ioa_cfg: ioa config struct
548 * @clr_ints: interrupts to clear
549 *
550 * This function masks all interrupts on the adapter, then clears the
551 * interrupts specified in the mask
552 *
553 * Return value:
554 * none
555 **/
556 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
557 u32 clr_ints)
558 {
559 volatile u32 int_reg;
560
561 /* Stop new interrupts */
562 ioa_cfg->allow_interrupts = 0;
563
564 /* Set interrupt mask to stop all new interrupts */
565 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
566
567 /* Clear any pending interrupts */
568 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
569 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
570 }
571
572 /**
573 * ipr_save_pcix_cmd_reg - Save PCI-X command register
574 * @ioa_cfg: ioa config struct
575 *
576 * Return value:
577 * 0 on success / -EIO on failure
578 **/
579 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
580 {
581 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
582
583 if (pcix_cmd_reg == 0)
584 return 0;
585
586 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
587 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
588 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
589 return -EIO;
590 }
591
592 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
593 return 0;
594 }
595
596 /**
597 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
598 * @ioa_cfg: ioa config struct
599 *
600 * Return value:
601 * 0 on success / -EIO on failure
602 **/
603 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
604 {
605 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
606
607 if (pcix_cmd_reg) {
608 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
609 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
610 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
611 return -EIO;
612 }
613 }
614
615 return 0;
616 }
617
618 /**
619 * ipr_sata_eh_done - done function for aborted SATA commands
620 * @ipr_cmd: ipr command struct
621 *
622 * This function is invoked for ops generated to SATA
623 * devices which are being aborted.
624 *
625 * Return value:
626 * none
627 **/
628 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
629 {
630 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
631 struct ata_queued_cmd *qc = ipr_cmd->qc;
632 struct ipr_sata_port *sata_port = qc->ap->private_data;
633
634 qc->err_mask |= AC_ERR_OTHER;
635 sata_port->ioasa.status |= ATA_BUSY;
636 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
637 ata_qc_complete(qc);
638 }
639
640 /**
641 * ipr_scsi_eh_done - mid-layer done function for aborted ops
642 * @ipr_cmd: ipr command struct
643 *
644 * This function is invoked by the interrupt handler for
645 * ops generated by the SCSI mid-layer which are being aborted.
646 *
647 * Return value:
648 * none
649 **/
650 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
651 {
652 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
653 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
654
655 scsi_cmd->result |= (DID_ERROR << 16);
656
657 scsi_dma_unmap(ipr_cmd->scsi_cmd);
658 scsi_cmd->scsi_done(scsi_cmd);
659 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
660 }
661
662 /**
663 * ipr_fail_all_ops - Fails all outstanding ops.
664 * @ioa_cfg: ioa config struct
665 *
666 * This function fails all outstanding ops.
667 *
668 * Return value:
669 * none
670 **/
671 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
672 {
673 struct ipr_cmnd *ipr_cmd, *temp;
674
675 ENTER;
676 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
677 list_del(&ipr_cmd->queue);
678
679 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
680 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
681
682 if (ipr_cmd->scsi_cmd)
683 ipr_cmd->done = ipr_scsi_eh_done;
684 else if (ipr_cmd->qc)
685 ipr_cmd->done = ipr_sata_eh_done;
686
687 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
688 del_timer(&ipr_cmd->timer);
689 ipr_cmd->done(ipr_cmd);
690 }
691
692 LEAVE;
693 }
694
695 /**
696 * ipr_do_req - Send driver initiated requests.
697 * @ipr_cmd: ipr command struct
698 * @done: done function
699 * @timeout_func: timeout function
700 * @timeout: timeout value
701 *
702 * This function sends the specified command to the adapter with the
703 * timeout given. The done function is invoked on command completion.
704 *
705 * Return value:
706 * none
707 **/
708 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
709 void (*done) (struct ipr_cmnd *),
710 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
711 {
712 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
713
714 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
715
716 ipr_cmd->done = done;
717
718 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
719 ipr_cmd->timer.expires = jiffies + timeout;
720 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
721
722 add_timer(&ipr_cmd->timer);
723
724 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
725
726 mb();
727 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
728 ioa_cfg->regs.ioarrin_reg);
729 }
730
731 /**
732 * ipr_internal_cmd_done - Op done function for an internally generated op.
733 * @ipr_cmd: ipr command struct
734 *
735 * This function is the op done function for an internally generated,
736 * blocking op. It simply wakes the sleeping thread.
737 *
738 * Return value:
739 * none
740 **/
741 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
742 {
743 if (ipr_cmd->sibling)
744 ipr_cmd->sibling = NULL;
745 else
746 complete(&ipr_cmd->completion);
747 }
748
749 /**
750 * ipr_send_blocking_cmd - Send command and sleep on its completion.
751 * @ipr_cmd: ipr command struct
752 * @timeout_func: function to invoke if command times out
753 * @timeout: timeout
754 *
755 * Return value:
756 * none
757 **/
758 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
759 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
760 u32 timeout)
761 {
762 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
763
764 init_completion(&ipr_cmd->completion);
765 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
766
767 spin_unlock_irq(ioa_cfg->host->host_lock);
768 wait_for_completion(&ipr_cmd->completion);
769 spin_lock_irq(ioa_cfg->host->host_lock);
770 }
771
772 /**
773 * ipr_send_hcam - Send an HCAM to the adapter.
774 * @ioa_cfg: ioa config struct
775 * @type: HCAM type
776 * @hostrcb: hostrcb struct
777 *
778 * This function will send a Host Controlled Async command to the adapter.
779 * If HCAMs are currently not allowed to be issued to the adapter, it will
780 * place the hostrcb on the free queue.
781 *
782 * Return value:
783 * none
784 **/
785 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
786 struct ipr_hostrcb *hostrcb)
787 {
788 struct ipr_cmnd *ipr_cmd;
789 struct ipr_ioarcb *ioarcb;
790
791 if (ioa_cfg->allow_cmds) {
792 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
793 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
794 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
795
796 ipr_cmd->u.hostrcb = hostrcb;
797 ioarcb = &ipr_cmd->ioarcb;
798
799 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
800 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
801 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
802 ioarcb->cmd_pkt.cdb[1] = type;
803 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
804 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
805
806 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
807 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
808 ipr_cmd->ioadl[0].flags_and_data_len =
809 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
810 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
811
812 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
813 ipr_cmd->done = ipr_process_ccn;
814 else
815 ipr_cmd->done = ipr_process_error;
816
817 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
818
819 mb();
820 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
821 ioa_cfg->regs.ioarrin_reg);
822 } else {
823 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
824 }
825 }
826
827 /**
828 * ipr_init_res_entry - Initialize a resource entry struct.
829 * @res: resource entry struct
830 *
831 * Return value:
832 * none
833 **/
834 static void ipr_init_res_entry(struct ipr_resource_entry *res)
835 {
836 res->needs_sync_complete = 0;
837 res->in_erp = 0;
838 res->add_to_ml = 0;
839 res->del_from_ml = 0;
840 res->resetting_device = 0;
841 res->sdev = NULL;
842 res->sata_port = NULL;
843 }
844
845 /**
846 * ipr_handle_config_change - Handle a config change from the adapter
847 * @ioa_cfg: ioa config struct
848 * @hostrcb: hostrcb
849 *
850 * Return value:
851 * none
852 **/
853 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
854 struct ipr_hostrcb *hostrcb)
855 {
856 struct ipr_resource_entry *res = NULL;
857 struct ipr_config_table_entry *cfgte;
858 u32 is_ndn = 1;
859
860 cfgte = &hostrcb->hcam.u.ccn.cfgte;
861
862 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
863 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
864 sizeof(cfgte->res_addr))) {
865 is_ndn = 0;
866 break;
867 }
868 }
869
870 if (is_ndn) {
871 if (list_empty(&ioa_cfg->free_res_q)) {
872 ipr_send_hcam(ioa_cfg,
873 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
874 hostrcb);
875 return;
876 }
877
878 res = list_entry(ioa_cfg->free_res_q.next,
879 struct ipr_resource_entry, queue);
880
881 list_del(&res->queue);
882 ipr_init_res_entry(res);
883 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
884 }
885
886 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
887
888 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
889 if (res->sdev) {
890 res->del_from_ml = 1;
891 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
892 if (ioa_cfg->allow_ml_add_del)
893 schedule_work(&ioa_cfg->work_q);
894 } else
895 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
896 } else if (!res->sdev) {
897 res->add_to_ml = 1;
898 if (ioa_cfg->allow_ml_add_del)
899 schedule_work(&ioa_cfg->work_q);
900 }
901
902 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
903 }
904
905 /**
906 * ipr_process_ccn - Op done function for a CCN.
907 * @ipr_cmd: ipr command struct
908 *
909 * This function is the op done function for a configuration
910 * change notification host controlled async from the adapter.
911 *
912 * Return value:
913 * none
914 **/
915 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
916 {
917 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
918 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
919 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
920
921 list_del(&hostrcb->queue);
922 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
923
924 if (ioasc) {
925 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
926 dev_err(&ioa_cfg->pdev->dev,
927 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
928
929 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
930 } else {
931 ipr_handle_config_change(ioa_cfg, hostrcb);
932 }
933 }
934
935 /**
936 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
937 * @i: index into buffer
938 * @buf: string to modify
939 *
940 * This function will strip all trailing whitespace, pad the end
941 * of the string with a single space, and NULL terminate the string.
942 *
943 * Return value:
944 * new length of string
945 **/
946 static int strip_and_pad_whitespace(int i, char *buf)
947 {
948 while (i && buf[i] == ' ')
949 i--;
950 buf[i+1] = ' ';
951 buf[i+2] = '\0';
952 return i + 2;
953 }
954
955 /**
956 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
957 * @prefix: string to print at start of printk
958 * @hostrcb: hostrcb pointer
959 * @vpd: vendor/product id/sn struct
960 *
961 * Return value:
962 * none
963 **/
964 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
965 struct ipr_vpd *vpd)
966 {
967 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
968 int i = 0;
969
970 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
971 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
972
973 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
974 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
975
976 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
977 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
978
979 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
980 }
981
982 /**
983 * ipr_log_vpd - Log the passed VPD to the error log.
984 * @vpd: vendor/product id/sn struct
985 *
986 * Return value:
987 * none
988 **/
989 static void ipr_log_vpd(struct ipr_vpd *vpd)
990 {
991 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
992 + IPR_SERIAL_NUM_LEN];
993
994 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
995 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
996 IPR_PROD_ID_LEN);
997 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
998 ipr_err("Vendor/Product ID: %s\n", buffer);
999
1000 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1001 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1002 ipr_err(" Serial Number: %s\n", buffer);
1003 }
1004
1005 /**
1006 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1007 * @prefix: string to print at start of printk
1008 * @hostrcb: hostrcb pointer
1009 * @vpd: vendor/product id/sn/wwn struct
1010 *
1011 * Return value:
1012 * none
1013 **/
1014 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1015 struct ipr_ext_vpd *vpd)
1016 {
1017 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1018 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1019 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1020 }
1021
1022 /**
1023 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1024 * @vpd: vendor/product id/sn/wwn struct
1025 *
1026 * Return value:
1027 * none
1028 **/
1029 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1030 {
1031 ipr_log_vpd(&vpd->vpd);
1032 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1033 be32_to_cpu(vpd->wwid[1]));
1034 }
1035
1036 /**
1037 * ipr_log_enhanced_cache_error - Log a cache error.
1038 * @ioa_cfg: ioa config struct
1039 * @hostrcb: hostrcb struct
1040 *
1041 * Return value:
1042 * none
1043 **/
1044 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1045 struct ipr_hostrcb *hostrcb)
1046 {
1047 struct ipr_hostrcb_type_12_error *error =
1048 &hostrcb->hcam.u.error.u.type_12_error;
1049
1050 ipr_err("-----Current Configuration-----\n");
1051 ipr_err("Cache Directory Card Information:\n");
1052 ipr_log_ext_vpd(&error->ioa_vpd);
1053 ipr_err("Adapter Card Information:\n");
1054 ipr_log_ext_vpd(&error->cfc_vpd);
1055
1056 ipr_err("-----Expected Configuration-----\n");
1057 ipr_err("Cache Directory Card Information:\n");
1058 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1059 ipr_err("Adapter Card Information:\n");
1060 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1061
1062 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1063 be32_to_cpu(error->ioa_data[0]),
1064 be32_to_cpu(error->ioa_data[1]),
1065 be32_to_cpu(error->ioa_data[2]));
1066 }
1067
1068 /**
1069 * ipr_log_cache_error - Log a cache error.
1070 * @ioa_cfg: ioa config struct
1071 * @hostrcb: hostrcb struct
1072 *
1073 * Return value:
1074 * none
1075 **/
1076 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1077 struct ipr_hostrcb *hostrcb)
1078 {
1079 struct ipr_hostrcb_type_02_error *error =
1080 &hostrcb->hcam.u.error.u.type_02_error;
1081
1082 ipr_err("-----Current Configuration-----\n");
1083 ipr_err("Cache Directory Card Information:\n");
1084 ipr_log_vpd(&error->ioa_vpd);
1085 ipr_err("Adapter Card Information:\n");
1086 ipr_log_vpd(&error->cfc_vpd);
1087
1088 ipr_err("-----Expected Configuration-----\n");
1089 ipr_err("Cache Directory Card Information:\n");
1090 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1091 ipr_err("Adapter Card Information:\n");
1092 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1093
1094 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1095 be32_to_cpu(error->ioa_data[0]),
1096 be32_to_cpu(error->ioa_data[1]),
1097 be32_to_cpu(error->ioa_data[2]));
1098 }
1099
1100 /**
1101 * ipr_log_enhanced_config_error - Log a configuration error.
1102 * @ioa_cfg: ioa config struct
1103 * @hostrcb: hostrcb struct
1104 *
1105 * Return value:
1106 * none
1107 **/
1108 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1109 struct ipr_hostrcb *hostrcb)
1110 {
1111 int errors_logged, i;
1112 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1113 struct ipr_hostrcb_type_13_error *error;
1114
1115 error = &hostrcb->hcam.u.error.u.type_13_error;
1116 errors_logged = be32_to_cpu(error->errors_logged);
1117
1118 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1119 be32_to_cpu(error->errors_detected), errors_logged);
1120
1121 dev_entry = error->dev;
1122
1123 for (i = 0; i < errors_logged; i++, dev_entry++) {
1124 ipr_err_separator;
1125
1126 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1127 ipr_log_ext_vpd(&dev_entry->vpd);
1128
1129 ipr_err("-----New Device Information-----\n");
1130 ipr_log_ext_vpd(&dev_entry->new_vpd);
1131
1132 ipr_err("Cache Directory Card Information:\n");
1133 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1134
1135 ipr_err("Adapter Card Information:\n");
1136 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1137 }
1138 }
1139
1140 /**
1141 * ipr_log_config_error - Log a configuration error.
1142 * @ioa_cfg: ioa config struct
1143 * @hostrcb: hostrcb struct
1144 *
1145 * Return value:
1146 * none
1147 **/
1148 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1149 struct ipr_hostrcb *hostrcb)
1150 {
1151 int errors_logged, i;
1152 struct ipr_hostrcb_device_data_entry *dev_entry;
1153 struct ipr_hostrcb_type_03_error *error;
1154
1155 error = &hostrcb->hcam.u.error.u.type_03_error;
1156 errors_logged = be32_to_cpu(error->errors_logged);
1157
1158 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1159 be32_to_cpu(error->errors_detected), errors_logged);
1160
1161 dev_entry = error->dev;
1162
1163 for (i = 0; i < errors_logged; i++, dev_entry++) {
1164 ipr_err_separator;
1165
1166 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1167 ipr_log_vpd(&dev_entry->vpd);
1168
1169 ipr_err("-----New Device Information-----\n");
1170 ipr_log_vpd(&dev_entry->new_vpd);
1171
1172 ipr_err("Cache Directory Card Information:\n");
1173 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1174
1175 ipr_err("Adapter Card Information:\n");
1176 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1177
1178 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1179 be32_to_cpu(dev_entry->ioa_data[0]),
1180 be32_to_cpu(dev_entry->ioa_data[1]),
1181 be32_to_cpu(dev_entry->ioa_data[2]),
1182 be32_to_cpu(dev_entry->ioa_data[3]),
1183 be32_to_cpu(dev_entry->ioa_data[4]));
1184 }
1185 }
1186
1187 /**
1188 * ipr_log_enhanced_array_error - Log an array configuration error.
1189 * @ioa_cfg: ioa config struct
1190 * @hostrcb: hostrcb struct
1191 *
1192 * Return value:
1193 * none
1194 **/
1195 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1196 struct ipr_hostrcb *hostrcb)
1197 {
1198 int i, num_entries;
1199 struct ipr_hostrcb_type_14_error *error;
1200 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1201 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1202
1203 error = &hostrcb->hcam.u.error.u.type_14_error;
1204
1205 ipr_err_separator;
1206
1207 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1208 error->protection_level,
1209 ioa_cfg->host->host_no,
1210 error->last_func_vset_res_addr.bus,
1211 error->last_func_vset_res_addr.target,
1212 error->last_func_vset_res_addr.lun);
1213
1214 ipr_err_separator;
1215
1216 array_entry = error->array_member;
1217 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1218 sizeof(error->array_member));
1219
1220 for (i = 0; i < num_entries; i++, array_entry++) {
1221 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1222 continue;
1223
1224 if (be32_to_cpu(error->exposed_mode_adn) == i)
1225 ipr_err("Exposed Array Member %d:\n", i);
1226 else
1227 ipr_err("Array Member %d:\n", i);
1228
1229 ipr_log_ext_vpd(&array_entry->vpd);
1230 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1231 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1232 "Expected Location");
1233
1234 ipr_err_separator;
1235 }
1236 }
1237
1238 /**
1239 * ipr_log_array_error - Log an array configuration error.
1240 * @ioa_cfg: ioa config struct
1241 * @hostrcb: hostrcb struct
1242 *
1243 * Return value:
1244 * none
1245 **/
1246 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1247 struct ipr_hostrcb *hostrcb)
1248 {
1249 int i;
1250 struct ipr_hostrcb_type_04_error *error;
1251 struct ipr_hostrcb_array_data_entry *array_entry;
1252 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1253
1254 error = &hostrcb->hcam.u.error.u.type_04_error;
1255
1256 ipr_err_separator;
1257
1258 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1259 error->protection_level,
1260 ioa_cfg->host->host_no,
1261 error->last_func_vset_res_addr.bus,
1262 error->last_func_vset_res_addr.target,
1263 error->last_func_vset_res_addr.lun);
1264
1265 ipr_err_separator;
1266
1267 array_entry = error->array_member;
1268
1269 for (i = 0; i < 18; i++) {
1270 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1271 continue;
1272
1273 if (be32_to_cpu(error->exposed_mode_adn) == i)
1274 ipr_err("Exposed Array Member %d:\n", i);
1275 else
1276 ipr_err("Array Member %d:\n", i);
1277
1278 ipr_log_vpd(&array_entry->vpd);
1279
1280 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1281 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1282 "Expected Location");
1283
1284 ipr_err_separator;
1285
1286 if (i == 9)
1287 array_entry = error->array_member2;
1288 else
1289 array_entry++;
1290 }
1291 }
1292
1293 /**
1294 * ipr_log_hex_data - Log additional hex IOA error data.
1295 * @ioa_cfg: ioa config struct
1296 * @data: IOA error data
1297 * @len: data length
1298 *
1299 * Return value:
1300 * none
1301 **/
1302 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1303 {
1304 int i;
1305
1306 if (len == 0)
1307 return;
1308
1309 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1310 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1311
1312 for (i = 0; i < len / 4; i += 4) {
1313 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1314 be32_to_cpu(data[i]),
1315 be32_to_cpu(data[i+1]),
1316 be32_to_cpu(data[i+2]),
1317 be32_to_cpu(data[i+3]));
1318 }
1319 }
1320
1321 /**
1322 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1323 * @ioa_cfg: ioa config struct
1324 * @hostrcb: hostrcb struct
1325 *
1326 * Return value:
1327 * none
1328 **/
1329 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1330 struct ipr_hostrcb *hostrcb)
1331 {
1332 struct ipr_hostrcb_type_17_error *error;
1333
1334 error = &hostrcb->hcam.u.error.u.type_17_error;
1335 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1336 strstrip(error->failure_reason);
1337
1338 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1339 be32_to_cpu(hostrcb->hcam.u.error.prc));
1340 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1341 ipr_log_hex_data(ioa_cfg, error->data,
1342 be32_to_cpu(hostrcb->hcam.length) -
1343 (offsetof(struct ipr_hostrcb_error, u) +
1344 offsetof(struct ipr_hostrcb_type_17_error, data)));
1345 }
1346
1347 /**
1348 * ipr_log_dual_ioa_error - Log a dual adapter error.
1349 * @ioa_cfg: ioa config struct
1350 * @hostrcb: hostrcb struct
1351 *
1352 * Return value:
1353 * none
1354 **/
1355 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1356 struct ipr_hostrcb *hostrcb)
1357 {
1358 struct ipr_hostrcb_type_07_error *error;
1359
1360 error = &hostrcb->hcam.u.error.u.type_07_error;
1361 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1362 strstrip(error->failure_reason);
1363
1364 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1365 be32_to_cpu(hostrcb->hcam.u.error.prc));
1366 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1367 ipr_log_hex_data(ioa_cfg, error->data,
1368 be32_to_cpu(hostrcb->hcam.length) -
1369 (offsetof(struct ipr_hostrcb_error, u) +
1370 offsetof(struct ipr_hostrcb_type_07_error, data)));
1371 }
1372
1373 static const struct {
1374 u8 active;
1375 char *desc;
1376 } path_active_desc[] = {
1377 { IPR_PATH_NO_INFO, "Path" },
1378 { IPR_PATH_ACTIVE, "Active path" },
1379 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1380 };
1381
1382 static const struct {
1383 u8 state;
1384 char *desc;
1385 } path_state_desc[] = {
1386 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1387 { IPR_PATH_HEALTHY, "is healthy" },
1388 { IPR_PATH_DEGRADED, "is degraded" },
1389 { IPR_PATH_FAILED, "is failed" }
1390 };
1391
1392 /**
1393 * ipr_log_fabric_path - Log a fabric path error
1394 * @hostrcb: hostrcb struct
1395 * @fabric: fabric descriptor
1396 *
1397 * Return value:
1398 * none
1399 **/
1400 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1401 struct ipr_hostrcb_fabric_desc *fabric)
1402 {
1403 int i, j;
1404 u8 path_state = fabric->path_state;
1405 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1406 u8 state = path_state & IPR_PATH_STATE_MASK;
1407
1408 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1409 if (path_active_desc[i].active != active)
1410 continue;
1411
1412 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1413 if (path_state_desc[j].state != state)
1414 continue;
1415
1416 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1417 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1418 path_active_desc[i].desc, path_state_desc[j].desc,
1419 fabric->ioa_port);
1420 } else if (fabric->cascaded_expander == 0xff) {
1421 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1422 path_active_desc[i].desc, path_state_desc[j].desc,
1423 fabric->ioa_port, fabric->phy);
1424 } else if (fabric->phy == 0xff) {
1425 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1426 path_active_desc[i].desc, path_state_desc[j].desc,
1427 fabric->ioa_port, fabric->cascaded_expander);
1428 } else {
1429 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1430 path_active_desc[i].desc, path_state_desc[j].desc,
1431 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1432 }
1433 return;
1434 }
1435 }
1436
1437 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1438 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1439 }
1440
1441 static const struct {
1442 u8 type;
1443 char *desc;
1444 } path_type_desc[] = {
1445 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1446 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1447 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1448 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1449 };
1450
1451 static const struct {
1452 u8 status;
1453 char *desc;
1454 } path_status_desc[] = {
1455 { IPR_PATH_CFG_NO_PROB, "Functional" },
1456 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1457 { IPR_PATH_CFG_FAILED, "Failed" },
1458 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1459 { IPR_PATH_NOT_DETECTED, "Missing" },
1460 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1461 };
1462
1463 static const char *link_rate[] = {
1464 "unknown",
1465 "disabled",
1466 "phy reset problem",
1467 "spinup hold",
1468 "port selector",
1469 "unknown",
1470 "unknown",
1471 "unknown",
1472 "1.5Gbps",
1473 "3.0Gbps",
1474 "unknown",
1475 "unknown",
1476 "unknown",
1477 "unknown",
1478 "unknown",
1479 "unknown"
1480 };
1481
1482 /**
1483 * ipr_log_path_elem - Log a fabric path element.
1484 * @hostrcb: hostrcb struct
1485 * @cfg: fabric path element struct
1486 *
1487 * Return value:
1488 * none
1489 **/
1490 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1491 struct ipr_hostrcb_config_element *cfg)
1492 {
1493 int i, j;
1494 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1495 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1496
1497 if (type == IPR_PATH_CFG_NOT_EXIST)
1498 return;
1499
1500 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1501 if (path_type_desc[i].type != type)
1502 continue;
1503
1504 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
1505 if (path_status_desc[j].status != status)
1506 continue;
1507
1508 if (type == IPR_PATH_CFG_IOA_PORT) {
1509 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
1510 path_status_desc[j].desc, path_type_desc[i].desc,
1511 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1512 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1513 } else {
1514 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
1515 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
1516 path_status_desc[j].desc, path_type_desc[i].desc,
1517 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1518 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1519 } else if (cfg->cascaded_expander == 0xff) {
1520 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
1521 "WWN=%08X%08X\n", path_status_desc[j].desc,
1522 path_type_desc[i].desc, cfg->phy,
1523 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1524 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1525 } else if (cfg->phy == 0xff) {
1526 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
1527 "WWN=%08X%08X\n", path_status_desc[j].desc,
1528 path_type_desc[i].desc, cfg->cascaded_expander,
1529 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1530 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1531 } else {
1532 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
1533 "WWN=%08X%08X\n", path_status_desc[j].desc,
1534 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
1535 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1536 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1537 }
1538 }
1539 return;
1540 }
1541 }
1542
1543 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
1544 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
1545 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1546 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1547 }
1548
1549 /**
1550 * ipr_log_fabric_error - Log a fabric error.
1551 * @ioa_cfg: ioa config struct
1552 * @hostrcb: hostrcb struct
1553 *
1554 * Return value:
1555 * none
1556 **/
1557 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
1558 struct ipr_hostrcb *hostrcb)
1559 {
1560 struct ipr_hostrcb_type_20_error *error;
1561 struct ipr_hostrcb_fabric_desc *fabric;
1562 struct ipr_hostrcb_config_element *cfg;
1563 int i, add_len;
1564
1565 error = &hostrcb->hcam.u.error.u.type_20_error;
1566 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1567 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
1568
1569 add_len = be32_to_cpu(hostrcb->hcam.length) -
1570 (offsetof(struct ipr_hostrcb_error, u) +
1571 offsetof(struct ipr_hostrcb_type_20_error, desc));
1572
1573 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
1574 ipr_log_fabric_path(hostrcb, fabric);
1575 for_each_fabric_cfg(fabric, cfg)
1576 ipr_log_path_elem(hostrcb, cfg);
1577
1578 add_len -= be16_to_cpu(fabric->length);
1579 fabric = (struct ipr_hostrcb_fabric_desc *)
1580 ((unsigned long)fabric + be16_to_cpu(fabric->length));
1581 }
1582
1583 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
1584 }
1585
1586 /**
1587 * ipr_log_generic_error - Log an adapter error.
1588 * @ioa_cfg: ioa config struct
1589 * @hostrcb: hostrcb struct
1590 *
1591 * Return value:
1592 * none
1593 **/
1594 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1595 struct ipr_hostrcb *hostrcb)
1596 {
1597 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
1598 be32_to_cpu(hostrcb->hcam.length));
1599 }
1600
1601 /**
1602 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1603 * @ioasc: IOASC
1604 *
1605 * This function will return the index of into the ipr_error_table
1606 * for the specified IOASC. If the IOASC is not in the table,
1607 * 0 will be returned, which points to the entry used for unknown errors.
1608 *
1609 * Return value:
1610 * index into the ipr_error_table
1611 **/
1612 static u32 ipr_get_error(u32 ioasc)
1613 {
1614 int i;
1615
1616 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1617 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
1618 return i;
1619
1620 return 0;
1621 }
1622
1623 /**
1624 * ipr_handle_log_data - Log an adapter error.
1625 * @ioa_cfg: ioa config struct
1626 * @hostrcb: hostrcb struct
1627 *
1628 * This function logs an adapter error to the system.
1629 *
1630 * Return value:
1631 * none
1632 **/
1633 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1634 struct ipr_hostrcb *hostrcb)
1635 {
1636 u32 ioasc;
1637 int error_index;
1638
1639 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1640 return;
1641
1642 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1643 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1644
1645 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1646
1647 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1648 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1649 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1650 scsi_report_bus_reset(ioa_cfg->host,
1651 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1652 }
1653
1654 error_index = ipr_get_error(ioasc);
1655
1656 if (!ipr_error_table[error_index].log_hcam)
1657 return;
1658
1659 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
1660
1661 /* Set indication we have logged an error */
1662 ioa_cfg->errors_logged++;
1663
1664 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
1665 return;
1666 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1667 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1668
1669 switch (hostrcb->hcam.overlay_id) {
1670 case IPR_HOST_RCB_OVERLAY_ID_2:
1671 ipr_log_cache_error(ioa_cfg, hostrcb);
1672 break;
1673 case IPR_HOST_RCB_OVERLAY_ID_3:
1674 ipr_log_config_error(ioa_cfg, hostrcb);
1675 break;
1676 case IPR_HOST_RCB_OVERLAY_ID_4:
1677 case IPR_HOST_RCB_OVERLAY_ID_6:
1678 ipr_log_array_error(ioa_cfg, hostrcb);
1679 break;
1680 case IPR_HOST_RCB_OVERLAY_ID_7:
1681 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1682 break;
1683 case IPR_HOST_RCB_OVERLAY_ID_12:
1684 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1685 break;
1686 case IPR_HOST_RCB_OVERLAY_ID_13:
1687 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1688 break;
1689 case IPR_HOST_RCB_OVERLAY_ID_14:
1690 case IPR_HOST_RCB_OVERLAY_ID_16:
1691 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1692 break;
1693 case IPR_HOST_RCB_OVERLAY_ID_17:
1694 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1695 break;
1696 case IPR_HOST_RCB_OVERLAY_ID_20:
1697 ipr_log_fabric_error(ioa_cfg, hostrcb);
1698 break;
1699 case IPR_HOST_RCB_OVERLAY_ID_1:
1700 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1701 default:
1702 ipr_log_generic_error(ioa_cfg, hostrcb);
1703 break;
1704 }
1705 }
1706
1707 /**
1708 * ipr_process_error - Op done function for an adapter error log.
1709 * @ipr_cmd: ipr command struct
1710 *
1711 * This function is the op done function for an error log host
1712 * controlled async from the adapter. It will log the error and
1713 * send the HCAM back to the adapter.
1714 *
1715 * Return value:
1716 * none
1717 **/
1718 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1719 {
1720 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1721 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1722 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1723 u32 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1724
1725 list_del(&hostrcb->queue);
1726 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1727
1728 if (!ioasc) {
1729 ipr_handle_log_data(ioa_cfg, hostrcb);
1730 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
1731 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
1732 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1733 dev_err(&ioa_cfg->pdev->dev,
1734 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1735 }
1736
1737 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1738 }
1739
1740 /**
1741 * ipr_timeout - An internally generated op has timed out.
1742 * @ipr_cmd: ipr command struct
1743 *
1744 * This function blocks host requests and initiates an
1745 * adapter reset.
1746 *
1747 * Return value:
1748 * none
1749 **/
1750 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1751 {
1752 unsigned long lock_flags = 0;
1753 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1754
1755 ENTER;
1756 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1757
1758 ioa_cfg->errors_logged++;
1759 dev_err(&ioa_cfg->pdev->dev,
1760 "Adapter being reset due to command timeout.\n");
1761
1762 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1763 ioa_cfg->sdt_state = GET_DUMP;
1764
1765 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1766 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1767
1768 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1769 LEAVE;
1770 }
1771
1772 /**
1773 * ipr_oper_timeout - Adapter timed out transitioning to operational
1774 * @ipr_cmd: ipr command struct
1775 *
1776 * This function blocks host requests and initiates an
1777 * adapter reset.
1778 *
1779 * Return value:
1780 * none
1781 **/
1782 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1783 {
1784 unsigned long lock_flags = 0;
1785 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1786
1787 ENTER;
1788 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1789
1790 ioa_cfg->errors_logged++;
1791 dev_err(&ioa_cfg->pdev->dev,
1792 "Adapter timed out transitioning to operational.\n");
1793
1794 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1795 ioa_cfg->sdt_state = GET_DUMP;
1796
1797 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1798 if (ipr_fastfail)
1799 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1800 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1801 }
1802
1803 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1804 LEAVE;
1805 }
1806
1807 /**
1808 * ipr_reset_reload - Reset/Reload the IOA
1809 * @ioa_cfg: ioa config struct
1810 * @shutdown_type: shutdown type
1811 *
1812 * This function resets the adapter and re-initializes it.
1813 * This function assumes that all new host commands have been stopped.
1814 * Return value:
1815 * SUCCESS / FAILED
1816 **/
1817 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1818 enum ipr_shutdown_type shutdown_type)
1819 {
1820 if (!ioa_cfg->in_reset_reload)
1821 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1822
1823 spin_unlock_irq(ioa_cfg->host->host_lock);
1824 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1825 spin_lock_irq(ioa_cfg->host->host_lock);
1826
1827 /* If we got hit with a host reset while we were already resetting
1828 the adapter for some reason, and the reset failed. */
1829 if (ioa_cfg->ioa_is_dead) {
1830 ipr_trace;
1831 return FAILED;
1832 }
1833
1834 return SUCCESS;
1835 }
1836
1837 /**
1838 * ipr_find_ses_entry - Find matching SES in SES table
1839 * @res: resource entry struct of SES
1840 *
1841 * Return value:
1842 * pointer to SES table entry / NULL on failure
1843 **/
1844 static const struct ipr_ses_table_entry *
1845 ipr_find_ses_entry(struct ipr_resource_entry *res)
1846 {
1847 int i, j, matches;
1848 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1849
1850 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1851 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1852 if (ste->compare_product_id_byte[j] == 'X') {
1853 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1854 matches++;
1855 else
1856 break;
1857 } else
1858 matches++;
1859 }
1860
1861 if (matches == IPR_PROD_ID_LEN)
1862 return ste;
1863 }
1864
1865 return NULL;
1866 }
1867
1868 /**
1869 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1870 * @ioa_cfg: ioa config struct
1871 * @bus: SCSI bus
1872 * @bus_width: bus width
1873 *
1874 * Return value:
1875 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1876 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1877 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1878 * max 160MHz = max 320MB/sec).
1879 **/
1880 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1881 {
1882 struct ipr_resource_entry *res;
1883 const struct ipr_ses_table_entry *ste;
1884 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1885
1886 /* Loop through each config table entry in the config table buffer */
1887 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1888 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1889 continue;
1890
1891 if (bus != res->cfgte.res_addr.bus)
1892 continue;
1893
1894 if (!(ste = ipr_find_ses_entry(res)))
1895 continue;
1896
1897 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1898 }
1899
1900 return max_xfer_rate;
1901 }
1902
1903 /**
1904 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1905 * @ioa_cfg: ioa config struct
1906 * @max_delay: max delay in micro-seconds to wait
1907 *
1908 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1909 *
1910 * Return value:
1911 * 0 on success / other on failure
1912 **/
1913 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1914 {
1915 volatile u32 pcii_reg;
1916 int delay = 1;
1917
1918 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1919 while (delay < max_delay) {
1920 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1921
1922 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1923 return 0;
1924
1925 /* udelay cannot be used if delay is more than a few milliseconds */
1926 if ((delay / 1000) > MAX_UDELAY_MS)
1927 mdelay(delay / 1000);
1928 else
1929 udelay(delay);
1930
1931 delay += delay;
1932 }
1933 return -EIO;
1934 }
1935
1936 /**
1937 * ipr_get_ldump_data_section - Dump IOA memory
1938 * @ioa_cfg: ioa config struct
1939 * @start_addr: adapter address to dump
1940 * @dest: destination kernel buffer
1941 * @length_in_words: length to dump in 4 byte words
1942 *
1943 * Return value:
1944 * 0 on success / -EIO on failure
1945 **/
1946 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1947 u32 start_addr,
1948 __be32 *dest, u32 length_in_words)
1949 {
1950 volatile u32 temp_pcii_reg;
1951 int i, delay = 0;
1952
1953 /* Write IOA interrupt reg starting LDUMP state */
1954 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1955 ioa_cfg->regs.set_uproc_interrupt_reg);
1956
1957 /* Wait for IO debug acknowledge */
1958 if (ipr_wait_iodbg_ack(ioa_cfg,
1959 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1960 dev_err(&ioa_cfg->pdev->dev,
1961 "IOA dump long data transfer timeout\n");
1962 return -EIO;
1963 }
1964
1965 /* Signal LDUMP interlocked - clear IO debug ack */
1966 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1967 ioa_cfg->regs.clr_interrupt_reg);
1968
1969 /* Write Mailbox with starting address */
1970 writel(start_addr, ioa_cfg->ioa_mailbox);
1971
1972 /* Signal address valid - clear IOA Reset alert */
1973 writel(IPR_UPROCI_RESET_ALERT,
1974 ioa_cfg->regs.clr_uproc_interrupt_reg);
1975
1976 for (i = 0; i < length_in_words; i++) {
1977 /* Wait for IO debug acknowledge */
1978 if (ipr_wait_iodbg_ack(ioa_cfg,
1979 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1980 dev_err(&ioa_cfg->pdev->dev,
1981 "IOA dump short data transfer timeout\n");
1982 return -EIO;
1983 }
1984
1985 /* Read data from mailbox and increment destination pointer */
1986 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1987 dest++;
1988
1989 /* For all but the last word of data, signal data received */
1990 if (i < (length_in_words - 1)) {
1991 /* Signal dump data received - Clear IO debug Ack */
1992 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1993 ioa_cfg->regs.clr_interrupt_reg);
1994 }
1995 }
1996
1997 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1998 writel(IPR_UPROCI_RESET_ALERT,
1999 ioa_cfg->regs.set_uproc_interrupt_reg);
2000
2001 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2002 ioa_cfg->regs.clr_uproc_interrupt_reg);
2003
2004 /* Signal dump data received - Clear IO debug Ack */
2005 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2006 ioa_cfg->regs.clr_interrupt_reg);
2007
2008 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2009 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2010 temp_pcii_reg =
2011 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
2012
2013 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2014 return 0;
2015
2016 udelay(10);
2017 delay += 10;
2018 }
2019
2020 return 0;
2021 }
2022
2023 #ifdef CONFIG_SCSI_IPR_DUMP
2024 /**
2025 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2026 * @ioa_cfg: ioa config struct
2027 * @pci_address: adapter address
2028 * @length: length of data to copy
2029 *
2030 * Copy data from PCI adapter to kernel buffer.
2031 * Note: length MUST be a 4 byte multiple
2032 * Return value:
2033 * 0 on success / other on failure
2034 **/
2035 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2036 unsigned long pci_address, u32 length)
2037 {
2038 int bytes_copied = 0;
2039 int cur_len, rc, rem_len, rem_page_len;
2040 __be32 *page;
2041 unsigned long lock_flags = 0;
2042 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2043
2044 while (bytes_copied < length &&
2045 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
2046 if (ioa_dump->page_offset >= PAGE_SIZE ||
2047 ioa_dump->page_offset == 0) {
2048 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2049
2050 if (!page) {
2051 ipr_trace;
2052 return bytes_copied;
2053 }
2054
2055 ioa_dump->page_offset = 0;
2056 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2057 ioa_dump->next_page_index++;
2058 } else
2059 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2060
2061 rem_len = length - bytes_copied;
2062 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2063 cur_len = min(rem_len, rem_page_len);
2064
2065 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2066 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2067 rc = -EIO;
2068 } else {
2069 rc = ipr_get_ldump_data_section(ioa_cfg,
2070 pci_address + bytes_copied,
2071 &page[ioa_dump->page_offset / 4],
2072 (cur_len / sizeof(u32)));
2073 }
2074 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2075
2076 if (!rc) {
2077 ioa_dump->page_offset += cur_len;
2078 bytes_copied += cur_len;
2079 } else {
2080 ipr_trace;
2081 break;
2082 }
2083 schedule();
2084 }
2085
2086 return bytes_copied;
2087 }
2088
2089 /**
2090 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2091 * @hdr: dump entry header struct
2092 *
2093 * Return value:
2094 * nothing
2095 **/
2096 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2097 {
2098 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2099 hdr->num_elems = 1;
2100 hdr->offset = sizeof(*hdr);
2101 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2102 }
2103
2104 /**
2105 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2106 * @ioa_cfg: ioa config struct
2107 * @driver_dump: driver dump struct
2108 *
2109 * Return value:
2110 * nothing
2111 **/
2112 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2113 struct ipr_driver_dump *driver_dump)
2114 {
2115 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2116
2117 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2118 driver_dump->ioa_type_entry.hdr.len =
2119 sizeof(struct ipr_dump_ioa_type_entry) -
2120 sizeof(struct ipr_dump_entry_header);
2121 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2122 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2123 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2124 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2125 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2126 ucode_vpd->minor_release[1];
2127 driver_dump->hdr.num_entries++;
2128 }
2129
2130 /**
2131 * ipr_dump_version_data - Fill in the driver version in the dump.
2132 * @ioa_cfg: ioa config struct
2133 * @driver_dump: driver dump struct
2134 *
2135 * Return value:
2136 * nothing
2137 **/
2138 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2139 struct ipr_driver_dump *driver_dump)
2140 {
2141 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2142 driver_dump->version_entry.hdr.len =
2143 sizeof(struct ipr_dump_version_entry) -
2144 sizeof(struct ipr_dump_entry_header);
2145 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2146 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2147 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2148 driver_dump->hdr.num_entries++;
2149 }
2150
2151 /**
2152 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2153 * @ioa_cfg: ioa config struct
2154 * @driver_dump: driver dump struct
2155 *
2156 * Return value:
2157 * nothing
2158 **/
2159 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2160 struct ipr_driver_dump *driver_dump)
2161 {
2162 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2163 driver_dump->trace_entry.hdr.len =
2164 sizeof(struct ipr_dump_trace_entry) -
2165 sizeof(struct ipr_dump_entry_header);
2166 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2167 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2168 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2169 driver_dump->hdr.num_entries++;
2170 }
2171
2172 /**
2173 * ipr_dump_location_data - Fill in the IOA location in the dump.
2174 * @ioa_cfg: ioa config struct
2175 * @driver_dump: driver dump struct
2176 *
2177 * Return value:
2178 * nothing
2179 **/
2180 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2181 struct ipr_driver_dump *driver_dump)
2182 {
2183 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2184 driver_dump->location_entry.hdr.len =
2185 sizeof(struct ipr_dump_location_entry) -
2186 sizeof(struct ipr_dump_entry_header);
2187 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2188 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2189 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
2190 driver_dump->hdr.num_entries++;
2191 }
2192
2193 /**
2194 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2195 * @ioa_cfg: ioa config struct
2196 * @dump: dump struct
2197 *
2198 * Return value:
2199 * nothing
2200 **/
2201 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2202 {
2203 unsigned long start_addr, sdt_word;
2204 unsigned long lock_flags = 0;
2205 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2206 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2207 u32 num_entries, start_off, end_off;
2208 u32 bytes_to_copy, bytes_copied, rc;
2209 struct ipr_sdt *sdt;
2210 int i;
2211
2212 ENTER;
2213
2214 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2215
2216 if (ioa_cfg->sdt_state != GET_DUMP) {
2217 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2218 return;
2219 }
2220
2221 start_addr = readl(ioa_cfg->ioa_mailbox);
2222
2223 if (!ipr_sdt_is_fmt2(start_addr)) {
2224 dev_err(&ioa_cfg->pdev->dev,
2225 "Invalid dump table format: %lx\n", start_addr);
2226 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2227 return;
2228 }
2229
2230 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2231
2232 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2233
2234 /* Initialize the overall dump header */
2235 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2236 driver_dump->hdr.num_entries = 1;
2237 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2238 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2239 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2240 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2241
2242 ipr_dump_version_data(ioa_cfg, driver_dump);
2243 ipr_dump_location_data(ioa_cfg, driver_dump);
2244 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2245 ipr_dump_trace_data(ioa_cfg, driver_dump);
2246
2247 /* Update dump_header */
2248 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2249
2250 /* IOA Dump entry */
2251 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2252 ioa_dump->format = IPR_SDT_FMT2;
2253 ioa_dump->hdr.len = 0;
2254 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2255 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2256
2257 /* First entries in sdt are actually a list of dump addresses and
2258 lengths to gather the real dump data. sdt represents the pointer
2259 to the ioa generated dump table. Dump data will be extracted based
2260 on entries in this table */
2261 sdt = &ioa_dump->sdt;
2262
2263 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2264 sizeof(struct ipr_sdt) / sizeof(__be32));
2265
2266 /* Smart Dump table is ready to use and the first entry is valid */
2267 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
2268 dev_err(&ioa_cfg->pdev->dev,
2269 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2270 rc, be32_to_cpu(sdt->hdr.state));
2271 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2272 ioa_cfg->sdt_state = DUMP_OBTAINED;
2273 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2274 return;
2275 }
2276
2277 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2278
2279 if (num_entries > IPR_NUM_SDT_ENTRIES)
2280 num_entries = IPR_NUM_SDT_ENTRIES;
2281
2282 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2283
2284 for (i = 0; i < num_entries; i++) {
2285 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2286 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2287 break;
2288 }
2289
2290 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2291 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
2292 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2293 end_off = be32_to_cpu(sdt->entry[i].end_offset);
2294
2295 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
2296 bytes_to_copy = end_off - start_off;
2297 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2298 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2299 continue;
2300 }
2301
2302 /* Copy data from adapter to driver buffers */
2303 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2304 bytes_to_copy);
2305
2306 ioa_dump->hdr.len += bytes_copied;
2307
2308 if (bytes_copied != bytes_to_copy) {
2309 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2310 break;
2311 }
2312 }
2313 }
2314 }
2315
2316 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2317
2318 /* Update dump_header */
2319 driver_dump->hdr.len += ioa_dump->hdr.len;
2320 wmb();
2321 ioa_cfg->sdt_state = DUMP_OBTAINED;
2322 LEAVE;
2323 }
2324
2325 #else
2326 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2327 #endif
2328
2329 /**
2330 * ipr_release_dump - Free adapter dump memory
2331 * @kref: kref struct
2332 *
2333 * Return value:
2334 * nothing
2335 **/
2336 static void ipr_release_dump(struct kref *kref)
2337 {
2338 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2339 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2340 unsigned long lock_flags = 0;
2341 int i;
2342
2343 ENTER;
2344 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2345 ioa_cfg->dump = NULL;
2346 ioa_cfg->sdt_state = INACTIVE;
2347 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2348
2349 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2350 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2351
2352 kfree(dump);
2353 LEAVE;
2354 }
2355
2356 /**
2357 * ipr_worker_thread - Worker thread
2358 * @work: ioa config struct
2359 *
2360 * Called at task level from a work thread. This function takes care
2361 * of adding and removing device from the mid-layer as configuration
2362 * changes are detected by the adapter.
2363 *
2364 * Return value:
2365 * nothing
2366 **/
2367 static void ipr_worker_thread(struct work_struct *work)
2368 {
2369 unsigned long lock_flags;
2370 struct ipr_resource_entry *res;
2371 struct scsi_device *sdev;
2372 struct ipr_dump *dump;
2373 struct ipr_ioa_cfg *ioa_cfg =
2374 container_of(work, struct ipr_ioa_cfg, work_q);
2375 u8 bus, target, lun;
2376 int did_work;
2377
2378 ENTER;
2379 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2380
2381 if (ioa_cfg->sdt_state == GET_DUMP) {
2382 dump = ioa_cfg->dump;
2383 if (!dump) {
2384 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2385 return;
2386 }
2387 kref_get(&dump->kref);
2388 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2389 ipr_get_ioa_dump(ioa_cfg, dump);
2390 kref_put(&dump->kref, ipr_release_dump);
2391
2392 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2393 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2394 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2395 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2396 return;
2397 }
2398
2399 restart:
2400 do {
2401 did_work = 0;
2402 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2403 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2404 return;
2405 }
2406
2407 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2408 if (res->del_from_ml && res->sdev) {
2409 did_work = 1;
2410 sdev = res->sdev;
2411 if (!scsi_device_get(sdev)) {
2412 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2413 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2414 scsi_remove_device(sdev);
2415 scsi_device_put(sdev);
2416 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2417 }
2418 break;
2419 }
2420 }
2421 } while(did_work);
2422
2423 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2424 if (res->add_to_ml) {
2425 bus = res->cfgte.res_addr.bus;
2426 target = res->cfgte.res_addr.target;
2427 lun = res->cfgte.res_addr.lun;
2428 res->add_to_ml = 0;
2429 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2430 scsi_add_device(ioa_cfg->host, bus, target, lun);
2431 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2432 goto restart;
2433 }
2434 }
2435
2436 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2437 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
2438 LEAVE;
2439 }
2440
2441 #ifdef CONFIG_SCSI_IPR_TRACE
2442 /**
2443 * ipr_read_trace - Dump the adapter trace
2444 * @kobj: kobject struct
2445 * @bin_attr: bin_attribute struct
2446 * @buf: buffer
2447 * @off: offset
2448 * @count: buffer size
2449 *
2450 * Return value:
2451 * number of bytes printed to buffer
2452 **/
2453 static ssize_t ipr_read_trace(struct kobject *kobj,
2454 struct bin_attribute *bin_attr,
2455 char *buf, loff_t off, size_t count)
2456 {
2457 struct device *dev = container_of(kobj, struct device, kobj);
2458 struct Scsi_Host *shost = class_to_shost(dev);
2459 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2460 unsigned long lock_flags = 0;
2461 ssize_t ret;
2462
2463 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2464 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
2465 IPR_TRACE_SIZE);
2466 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2467
2468 return ret;
2469 }
2470
2471 static struct bin_attribute ipr_trace_attr = {
2472 .attr = {
2473 .name = "trace",
2474 .mode = S_IRUGO,
2475 },
2476 .size = 0,
2477 .read = ipr_read_trace,
2478 };
2479 #endif
2480
2481 static const struct {
2482 enum ipr_cache_state state;
2483 char *name;
2484 } cache_state [] = {
2485 { CACHE_NONE, "none" },
2486 { CACHE_DISABLED, "disabled" },
2487 { CACHE_ENABLED, "enabled" }
2488 };
2489
2490 /**
2491 * ipr_show_write_caching - Show the write caching attribute
2492 * @dev: device struct
2493 * @buf: buffer
2494 *
2495 * Return value:
2496 * number of bytes printed to buffer
2497 **/
2498 static ssize_t ipr_show_write_caching(struct device *dev,
2499 struct device_attribute *attr, char *buf)
2500 {
2501 struct Scsi_Host *shost = class_to_shost(dev);
2502 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2503 unsigned long lock_flags = 0;
2504 int i, len = 0;
2505
2506 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2507 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2508 if (cache_state[i].state == ioa_cfg->cache_state) {
2509 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2510 break;
2511 }
2512 }
2513 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2514 return len;
2515 }
2516
2517
2518 /**
2519 * ipr_store_write_caching - Enable/disable adapter write cache
2520 * @dev: device struct
2521 * @buf: buffer
2522 * @count: buffer size
2523 *
2524 * This function will enable/disable adapter write cache.
2525 *
2526 * Return value:
2527 * count on success / other on failure
2528 **/
2529 static ssize_t ipr_store_write_caching(struct device *dev,
2530 struct device_attribute *attr,
2531 const char *buf, size_t count)
2532 {
2533 struct Scsi_Host *shost = class_to_shost(dev);
2534 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2535 unsigned long lock_flags = 0;
2536 enum ipr_cache_state new_state = CACHE_INVALID;
2537 int i;
2538
2539 if (!capable(CAP_SYS_ADMIN))
2540 return -EACCES;
2541 if (ioa_cfg->cache_state == CACHE_NONE)
2542 return -EINVAL;
2543
2544 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2545 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2546 new_state = cache_state[i].state;
2547 break;
2548 }
2549 }
2550
2551 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2552 return -EINVAL;
2553
2554 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2555 if (ioa_cfg->cache_state == new_state) {
2556 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2557 return count;
2558 }
2559
2560 ioa_cfg->cache_state = new_state;
2561 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2562 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2563 if (!ioa_cfg->in_reset_reload)
2564 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2565 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2566 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2567
2568 return count;
2569 }
2570
2571 static struct device_attribute ipr_ioa_cache_attr = {
2572 .attr = {
2573 .name = "write_cache",
2574 .mode = S_IRUGO | S_IWUSR,
2575 },
2576 .show = ipr_show_write_caching,
2577 .store = ipr_store_write_caching
2578 };
2579
2580 /**
2581 * ipr_show_fw_version - Show the firmware version
2582 * @dev: class device struct
2583 * @buf: buffer
2584 *
2585 * Return value:
2586 * number of bytes printed to buffer
2587 **/
2588 static ssize_t ipr_show_fw_version(struct device *dev,
2589 struct device_attribute *attr, char *buf)
2590 {
2591 struct Scsi_Host *shost = class_to_shost(dev);
2592 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2593 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2594 unsigned long lock_flags = 0;
2595 int len;
2596
2597 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2598 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2599 ucode_vpd->major_release, ucode_vpd->card_type,
2600 ucode_vpd->minor_release[0],
2601 ucode_vpd->minor_release[1]);
2602 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2603 return len;
2604 }
2605
2606 static struct device_attribute ipr_fw_version_attr = {
2607 .attr = {
2608 .name = "fw_version",
2609 .mode = S_IRUGO,
2610 },
2611 .show = ipr_show_fw_version,
2612 };
2613
2614 /**
2615 * ipr_show_log_level - Show the adapter's error logging level
2616 * @dev: class device struct
2617 * @buf: buffer
2618 *
2619 * Return value:
2620 * number of bytes printed to buffer
2621 **/
2622 static ssize_t ipr_show_log_level(struct device *dev,
2623 struct device_attribute *attr, char *buf)
2624 {
2625 struct Scsi_Host *shost = class_to_shost(dev);
2626 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2627 unsigned long lock_flags = 0;
2628 int len;
2629
2630 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2631 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2632 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2633 return len;
2634 }
2635
2636 /**
2637 * ipr_store_log_level - Change the adapter's error logging level
2638 * @dev: class device struct
2639 * @buf: buffer
2640 *
2641 * Return value:
2642 * number of bytes printed to buffer
2643 **/
2644 static ssize_t ipr_store_log_level(struct device *dev,
2645 struct device_attribute *attr,
2646 const char *buf, size_t count)
2647 {
2648 struct Scsi_Host *shost = class_to_shost(dev);
2649 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2650 unsigned long lock_flags = 0;
2651
2652 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2653 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2654 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2655 return strlen(buf);
2656 }
2657
2658 static struct device_attribute ipr_log_level_attr = {
2659 .attr = {
2660 .name = "log_level",
2661 .mode = S_IRUGO | S_IWUSR,
2662 },
2663 .show = ipr_show_log_level,
2664 .store = ipr_store_log_level
2665 };
2666
2667 /**
2668 * ipr_store_diagnostics - IOA Diagnostics interface
2669 * @dev: device struct
2670 * @buf: buffer
2671 * @count: buffer size
2672 *
2673 * This function will reset the adapter and wait a reasonable
2674 * amount of time for any errors that the adapter might log.
2675 *
2676 * Return value:
2677 * count on success / other on failure
2678 **/
2679 static ssize_t ipr_store_diagnostics(struct device *dev,
2680 struct device_attribute *attr,
2681 const char *buf, size_t count)
2682 {
2683 struct Scsi_Host *shost = class_to_shost(dev);
2684 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2685 unsigned long lock_flags = 0;
2686 int rc = count;
2687
2688 if (!capable(CAP_SYS_ADMIN))
2689 return -EACCES;
2690
2691 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2692 while(ioa_cfg->in_reset_reload) {
2693 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2694 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2695 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2696 }
2697
2698 ioa_cfg->errors_logged = 0;
2699 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2700
2701 if (ioa_cfg->in_reset_reload) {
2702 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2703 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2704
2705 /* Wait for a second for any errors to be logged */
2706 msleep(1000);
2707 } else {
2708 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2709 return -EIO;
2710 }
2711
2712 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2713 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2714 rc = -EIO;
2715 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2716
2717 return rc;
2718 }
2719
2720 static struct device_attribute ipr_diagnostics_attr = {
2721 .attr = {
2722 .name = "run_diagnostics",
2723 .mode = S_IWUSR,
2724 },
2725 .store = ipr_store_diagnostics
2726 };
2727
2728 /**
2729 * ipr_show_adapter_state - Show the adapter's state
2730 * @class_dev: device struct
2731 * @buf: buffer
2732 *
2733 * Return value:
2734 * number of bytes printed to buffer
2735 **/
2736 static ssize_t ipr_show_adapter_state(struct device *dev,
2737 struct device_attribute *attr, char *buf)
2738 {
2739 struct Scsi_Host *shost = class_to_shost(dev);
2740 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2741 unsigned long lock_flags = 0;
2742 int len;
2743
2744 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2745 if (ioa_cfg->ioa_is_dead)
2746 len = snprintf(buf, PAGE_SIZE, "offline\n");
2747 else
2748 len = snprintf(buf, PAGE_SIZE, "online\n");
2749 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2750 return len;
2751 }
2752
2753 /**
2754 * ipr_store_adapter_state - Change adapter state
2755 * @dev: device struct
2756 * @buf: buffer
2757 * @count: buffer size
2758 *
2759 * This function will change the adapter's state.
2760 *
2761 * Return value:
2762 * count on success / other on failure
2763 **/
2764 static ssize_t ipr_store_adapter_state(struct device *dev,
2765 struct device_attribute *attr,
2766 const char *buf, size_t count)
2767 {
2768 struct Scsi_Host *shost = class_to_shost(dev);
2769 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2770 unsigned long lock_flags;
2771 int result = count;
2772
2773 if (!capable(CAP_SYS_ADMIN))
2774 return -EACCES;
2775
2776 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2777 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2778 ioa_cfg->ioa_is_dead = 0;
2779 ioa_cfg->reset_retries = 0;
2780 ioa_cfg->in_ioa_bringdown = 0;
2781 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2782 }
2783 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2784 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2785
2786 return result;
2787 }
2788
2789 static struct device_attribute ipr_ioa_state_attr = {
2790 .attr = {
2791 .name = "online_state",
2792 .mode = S_IRUGO | S_IWUSR,
2793 },
2794 .show = ipr_show_adapter_state,
2795 .store = ipr_store_adapter_state
2796 };
2797
2798 /**
2799 * ipr_store_reset_adapter - Reset the adapter
2800 * @dev: device struct
2801 * @buf: buffer
2802 * @count: buffer size
2803 *
2804 * This function will reset the adapter.
2805 *
2806 * Return value:
2807 * count on success / other on failure
2808 **/
2809 static ssize_t ipr_store_reset_adapter(struct device *dev,
2810 struct device_attribute *attr,
2811 const char *buf, size_t count)
2812 {
2813 struct Scsi_Host *shost = class_to_shost(dev);
2814 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2815 unsigned long lock_flags;
2816 int result = count;
2817
2818 if (!capable(CAP_SYS_ADMIN))
2819 return -EACCES;
2820
2821 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2822 if (!ioa_cfg->in_reset_reload)
2823 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2824 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2825 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2826
2827 return result;
2828 }
2829
2830 static struct device_attribute ipr_ioa_reset_attr = {
2831 .attr = {
2832 .name = "reset_host",
2833 .mode = S_IWUSR,
2834 },
2835 .store = ipr_store_reset_adapter
2836 };
2837
2838 /**
2839 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2840 * @buf_len: buffer length
2841 *
2842 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2843 * list to use for microcode download
2844 *
2845 * Return value:
2846 * pointer to sglist / NULL on failure
2847 **/
2848 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2849 {
2850 int sg_size, order, bsize_elem, num_elem, i, j;
2851 struct ipr_sglist *sglist;
2852 struct scatterlist *scatterlist;
2853 struct page *page;
2854
2855 /* Get the minimum size per scatter/gather element */
2856 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2857
2858 /* Get the actual size per element */
2859 order = get_order(sg_size);
2860
2861 /* Determine the actual number of bytes per element */
2862 bsize_elem = PAGE_SIZE * (1 << order);
2863
2864 /* Determine the actual number of sg entries needed */
2865 if (buf_len % bsize_elem)
2866 num_elem = (buf_len / bsize_elem) + 1;
2867 else
2868 num_elem = buf_len / bsize_elem;
2869
2870 /* Allocate a scatter/gather list for the DMA */
2871 sglist = kzalloc(sizeof(struct ipr_sglist) +
2872 (sizeof(struct scatterlist) * (num_elem - 1)),
2873 GFP_KERNEL);
2874
2875 if (sglist == NULL) {
2876 ipr_trace;
2877 return NULL;
2878 }
2879
2880 scatterlist = sglist->scatterlist;
2881 sg_init_table(scatterlist, num_elem);
2882
2883 sglist->order = order;
2884 sglist->num_sg = num_elem;
2885
2886 /* Allocate a bunch of sg elements */
2887 for (i = 0; i < num_elem; i++) {
2888 page = alloc_pages(GFP_KERNEL, order);
2889 if (!page) {
2890 ipr_trace;
2891
2892 /* Free up what we already allocated */
2893 for (j = i - 1; j >= 0; j--)
2894 __free_pages(sg_page(&scatterlist[j]), order);
2895 kfree(sglist);
2896 return NULL;
2897 }
2898
2899 sg_set_page(&scatterlist[i], page, 0, 0);
2900 }
2901
2902 return sglist;
2903 }
2904
2905 /**
2906 * ipr_free_ucode_buffer - Frees a microcode download buffer
2907 * @p_dnld: scatter/gather list pointer
2908 *
2909 * Free a DMA'able ucode download buffer previously allocated with
2910 * ipr_alloc_ucode_buffer
2911 *
2912 * Return value:
2913 * nothing
2914 **/
2915 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2916 {
2917 int i;
2918
2919 for (i = 0; i < sglist->num_sg; i++)
2920 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
2921
2922 kfree(sglist);
2923 }
2924
2925 /**
2926 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2927 * @sglist: scatter/gather list pointer
2928 * @buffer: buffer pointer
2929 * @len: buffer length
2930 *
2931 * Copy a microcode image from a user buffer into a buffer allocated by
2932 * ipr_alloc_ucode_buffer
2933 *
2934 * Return value:
2935 * 0 on success / other on failure
2936 **/
2937 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2938 u8 *buffer, u32 len)
2939 {
2940 int bsize_elem, i, result = 0;
2941 struct scatterlist *scatterlist;
2942 void *kaddr;
2943
2944 /* Determine the actual number of bytes per element */
2945 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2946
2947 scatterlist = sglist->scatterlist;
2948
2949 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2950 struct page *page = sg_page(&scatterlist[i]);
2951
2952 kaddr = kmap(page);
2953 memcpy(kaddr, buffer, bsize_elem);
2954 kunmap(page);
2955
2956 scatterlist[i].length = bsize_elem;
2957
2958 if (result != 0) {
2959 ipr_trace;
2960 return result;
2961 }
2962 }
2963
2964 if (len % bsize_elem) {
2965 struct page *page = sg_page(&scatterlist[i]);
2966
2967 kaddr = kmap(page);
2968 memcpy(kaddr, buffer, len % bsize_elem);
2969 kunmap(page);
2970
2971 scatterlist[i].length = len % bsize_elem;
2972 }
2973
2974 sglist->buffer_len = len;
2975 return result;
2976 }
2977
2978 /**
2979 * ipr_build_ucode_ioadl - Build a microcode download IOADL
2980 * @ipr_cmd: ipr command struct
2981 * @sglist: scatter/gather list
2982 *
2983 * Builds a microcode download IOA data list (IOADL).
2984 *
2985 **/
2986 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2987 struct ipr_sglist *sglist)
2988 {
2989 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2990 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2991 struct scatterlist *scatterlist = sglist->scatterlist;
2992 int i;
2993
2994 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
2995 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
2996 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
2997 ioarcb->write_ioadl_len =
2998 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2999
3000 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3001 ioadl[i].flags_and_data_len =
3002 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3003 ioadl[i].address =
3004 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3005 }
3006
3007 ioadl[i-1].flags_and_data_len |=
3008 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3009 }
3010
3011 /**
3012 * ipr_update_ioa_ucode - Update IOA's microcode
3013 * @ioa_cfg: ioa config struct
3014 * @sglist: scatter/gather list
3015 *
3016 * Initiate an adapter reset to update the IOA's microcode
3017 *
3018 * Return value:
3019 * 0 on success / -EIO on failure
3020 **/
3021 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3022 struct ipr_sglist *sglist)
3023 {
3024 unsigned long lock_flags;
3025
3026 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3027 while(ioa_cfg->in_reset_reload) {
3028 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3029 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3030 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3031 }
3032
3033 if (ioa_cfg->ucode_sglist) {
3034 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3035 dev_err(&ioa_cfg->pdev->dev,
3036 "Microcode download already in progress\n");
3037 return -EIO;
3038 }
3039
3040 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3041 sglist->num_sg, DMA_TO_DEVICE);
3042
3043 if (!sglist->num_dma_sg) {
3044 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3045 dev_err(&ioa_cfg->pdev->dev,
3046 "Failed to map microcode download buffer!\n");
3047 return -EIO;
3048 }
3049
3050 ioa_cfg->ucode_sglist = sglist;
3051 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3052 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3053 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3054
3055 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3056 ioa_cfg->ucode_sglist = NULL;
3057 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3058 return 0;
3059 }
3060
3061 /**
3062 * ipr_store_update_fw - Update the firmware on the adapter
3063 * @class_dev: device struct
3064 * @buf: buffer
3065 * @count: buffer size
3066 *
3067 * This function will update the firmware on the adapter.
3068 *
3069 * Return value:
3070 * count on success / other on failure
3071 **/
3072 static ssize_t ipr_store_update_fw(struct device *dev,
3073 struct device_attribute *attr,
3074 const char *buf, size_t count)
3075 {
3076 struct Scsi_Host *shost = class_to_shost(dev);
3077 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3078 struct ipr_ucode_image_header *image_hdr;
3079 const struct firmware *fw_entry;
3080 struct ipr_sglist *sglist;
3081 char fname[100];
3082 char *src;
3083 int len, result, dnld_size;
3084
3085 if (!capable(CAP_SYS_ADMIN))
3086 return -EACCES;
3087
3088 len = snprintf(fname, 99, "%s", buf);
3089 fname[len-1] = '\0';
3090
3091 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3092 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3093 return -EIO;
3094 }
3095
3096 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3097
3098 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3099 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3100 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3101 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3102 release_firmware(fw_entry);
3103 return -EINVAL;
3104 }
3105
3106 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3107 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3108 sglist = ipr_alloc_ucode_buffer(dnld_size);
3109
3110 if (!sglist) {
3111 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3112 release_firmware(fw_entry);
3113 return -ENOMEM;
3114 }
3115
3116 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3117
3118 if (result) {
3119 dev_err(&ioa_cfg->pdev->dev,
3120 "Microcode buffer copy to DMA buffer failed\n");
3121 goto out;
3122 }
3123
3124 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3125
3126 if (!result)
3127 result = count;
3128 out:
3129 ipr_free_ucode_buffer(sglist);
3130 release_firmware(fw_entry);
3131 return result;
3132 }
3133
3134 static struct device_attribute ipr_update_fw_attr = {
3135 .attr = {
3136 .name = "update_fw",
3137 .mode = S_IWUSR,
3138 },
3139 .store = ipr_store_update_fw
3140 };
3141
3142 static struct device_attribute *ipr_ioa_attrs[] = {
3143 &ipr_fw_version_attr,
3144 &ipr_log_level_attr,
3145 &ipr_diagnostics_attr,
3146 &ipr_ioa_state_attr,
3147 &ipr_ioa_reset_attr,
3148 &ipr_update_fw_attr,
3149 &ipr_ioa_cache_attr,
3150 NULL,
3151 };
3152
3153 #ifdef CONFIG_SCSI_IPR_DUMP
3154 /**
3155 * ipr_read_dump - Dump the adapter
3156 * @kobj: kobject struct
3157 * @bin_attr: bin_attribute struct
3158 * @buf: buffer
3159 * @off: offset
3160 * @count: buffer size
3161 *
3162 * Return value:
3163 * number of bytes printed to buffer
3164 **/
3165 static ssize_t ipr_read_dump(struct kobject *kobj,
3166 struct bin_attribute *bin_attr,
3167 char *buf, loff_t off, size_t count)
3168 {
3169 struct device *cdev = container_of(kobj, struct device, kobj);
3170 struct Scsi_Host *shost = class_to_shost(cdev);
3171 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3172 struct ipr_dump *dump;
3173 unsigned long lock_flags = 0;
3174 char *src;
3175 int len;
3176 size_t rc = count;
3177
3178 if (!capable(CAP_SYS_ADMIN))
3179 return -EACCES;
3180
3181 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3182 dump = ioa_cfg->dump;
3183
3184 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3185 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3186 return 0;
3187 }
3188 kref_get(&dump->kref);
3189 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3190
3191 if (off > dump->driver_dump.hdr.len) {
3192 kref_put(&dump->kref, ipr_release_dump);
3193 return 0;
3194 }
3195
3196 if (off + count > dump->driver_dump.hdr.len) {
3197 count = dump->driver_dump.hdr.len - off;
3198 rc = count;
3199 }
3200
3201 if (count && off < sizeof(dump->driver_dump)) {
3202 if (off + count > sizeof(dump->driver_dump))
3203 len = sizeof(dump->driver_dump) - off;
3204 else
3205 len = count;
3206 src = (u8 *)&dump->driver_dump + off;
3207 memcpy(buf, src, len);
3208 buf += len;
3209 off += len;
3210 count -= len;
3211 }
3212
3213 off -= sizeof(dump->driver_dump);
3214
3215 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3216 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3217 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3218 else
3219 len = count;
3220 src = (u8 *)&dump->ioa_dump + off;
3221 memcpy(buf, src, len);
3222 buf += len;
3223 off += len;
3224 count -= len;
3225 }
3226
3227 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3228
3229 while (count) {
3230 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3231 len = PAGE_ALIGN(off) - off;
3232 else
3233 len = count;
3234 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3235 src += off & ~PAGE_MASK;
3236 memcpy(buf, src, len);
3237 buf += len;
3238 off += len;
3239 count -= len;
3240 }
3241
3242 kref_put(&dump->kref, ipr_release_dump);
3243 return rc;
3244 }
3245
3246 /**
3247 * ipr_alloc_dump - Prepare for adapter dump
3248 * @ioa_cfg: ioa config struct
3249 *
3250 * Return value:
3251 * 0 on success / other on failure
3252 **/
3253 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3254 {
3255 struct ipr_dump *dump;
3256 unsigned long lock_flags = 0;
3257
3258 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
3259
3260 if (!dump) {
3261 ipr_err("Dump memory allocation failed\n");
3262 return -ENOMEM;
3263 }
3264
3265 kref_init(&dump->kref);
3266 dump->ioa_cfg = ioa_cfg;
3267
3268 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3269
3270 if (INACTIVE != ioa_cfg->sdt_state) {
3271 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3272 kfree(dump);
3273 return 0;
3274 }
3275
3276 ioa_cfg->dump = dump;
3277 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3278 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3279 ioa_cfg->dump_taken = 1;
3280 schedule_work(&ioa_cfg->work_q);
3281 }
3282 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3283
3284 return 0;
3285 }
3286
3287 /**
3288 * ipr_free_dump - Free adapter dump memory
3289 * @ioa_cfg: ioa config struct
3290 *
3291 * Return value:
3292 * 0 on success / other on failure
3293 **/
3294 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3295 {
3296 struct ipr_dump *dump;
3297 unsigned long lock_flags = 0;
3298
3299 ENTER;
3300
3301 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3302 dump = ioa_cfg->dump;
3303 if (!dump) {
3304 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3305 return 0;
3306 }
3307
3308 ioa_cfg->dump = NULL;
3309 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3310
3311 kref_put(&dump->kref, ipr_release_dump);
3312
3313 LEAVE;
3314 return 0;
3315 }
3316
3317 /**
3318 * ipr_write_dump - Setup dump state of adapter
3319 * @kobj: kobject struct
3320 * @bin_attr: bin_attribute struct
3321 * @buf: buffer
3322 * @off: offset
3323 * @count: buffer size
3324 *
3325 * Return value:
3326 * number of bytes printed to buffer
3327 **/
3328 static ssize_t ipr_write_dump(struct kobject *kobj,
3329 struct bin_attribute *bin_attr,
3330 char *buf, loff_t off, size_t count)
3331 {
3332 struct device *cdev = container_of(kobj, struct device, kobj);
3333 struct Scsi_Host *shost = class_to_shost(cdev);
3334 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3335 int rc;
3336
3337 if (!capable(CAP_SYS_ADMIN))
3338 return -EACCES;
3339
3340 if (buf[0] == '1')
3341 rc = ipr_alloc_dump(ioa_cfg);
3342 else if (buf[0] == '0')
3343 rc = ipr_free_dump(ioa_cfg);
3344 else
3345 return -EINVAL;
3346
3347 if (rc)
3348 return rc;
3349 else
3350 return count;
3351 }
3352
3353 static struct bin_attribute ipr_dump_attr = {
3354 .attr = {
3355 .name = "dump",
3356 .mode = S_IRUSR | S_IWUSR,
3357 },
3358 .size = 0,
3359 .read = ipr_read_dump,
3360 .write = ipr_write_dump
3361 };
3362 #else
3363 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3364 #endif
3365
3366 /**
3367 * ipr_change_queue_depth - Change the device's queue depth
3368 * @sdev: scsi device struct
3369 * @qdepth: depth to set
3370 *
3371 * Return value:
3372 * actual depth set
3373 **/
3374 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3375 {
3376 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3377 struct ipr_resource_entry *res;
3378 unsigned long lock_flags = 0;
3379
3380 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3381 res = (struct ipr_resource_entry *)sdev->hostdata;
3382
3383 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3384 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3385 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3386
3387 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3388 return sdev->queue_depth;
3389 }
3390
3391 /**
3392 * ipr_change_queue_type - Change the device's queue type
3393 * @dsev: scsi device struct
3394 * @tag_type: type of tags to use
3395 *
3396 * Return value:
3397 * actual queue type set
3398 **/
3399 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3400 {
3401 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3402 struct ipr_resource_entry *res;
3403 unsigned long lock_flags = 0;
3404
3405 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3406 res = (struct ipr_resource_entry *)sdev->hostdata;
3407
3408 if (res) {
3409 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3410 /*
3411 * We don't bother quiescing the device here since the
3412 * adapter firmware does it for us.
3413 */
3414 scsi_set_tag_type(sdev, tag_type);
3415
3416 if (tag_type)
3417 scsi_activate_tcq(sdev, sdev->queue_depth);
3418 else
3419 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3420 } else
3421 tag_type = 0;
3422 } else
3423 tag_type = 0;
3424
3425 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3426 return tag_type;
3427 }
3428
3429 /**
3430 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3431 * @dev: device struct
3432 * @buf: buffer
3433 *
3434 * Return value:
3435 * number of bytes printed to buffer
3436 **/
3437 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
3438 {
3439 struct scsi_device *sdev = to_scsi_device(dev);
3440 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3441 struct ipr_resource_entry *res;
3442 unsigned long lock_flags = 0;
3443 ssize_t len = -ENXIO;
3444
3445 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3446 res = (struct ipr_resource_entry *)sdev->hostdata;
3447 if (res)
3448 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3449 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3450 return len;
3451 }
3452
3453 static struct device_attribute ipr_adapter_handle_attr = {
3454 .attr = {
3455 .name = "adapter_handle",
3456 .mode = S_IRUSR,
3457 },
3458 .show = ipr_show_adapter_handle
3459 };
3460
3461 static struct device_attribute *ipr_dev_attrs[] = {
3462 &ipr_adapter_handle_attr,
3463 NULL,
3464 };
3465
3466 /**
3467 * ipr_biosparam - Return the HSC mapping
3468 * @sdev: scsi device struct
3469 * @block_device: block device pointer
3470 * @capacity: capacity of the device
3471 * @parm: Array containing returned HSC values.
3472 *
3473 * This function generates the HSC parms that fdisk uses.
3474 * We want to make sure we return something that places partitions
3475 * on 4k boundaries for best performance with the IOA.
3476 *
3477 * Return value:
3478 * 0 on success
3479 **/
3480 static int ipr_biosparam(struct scsi_device *sdev,
3481 struct block_device *block_device,
3482 sector_t capacity, int *parm)
3483 {
3484 int heads, sectors;
3485 sector_t cylinders;
3486
3487 heads = 128;
3488 sectors = 32;
3489
3490 cylinders = capacity;
3491 sector_div(cylinders, (128 * 32));
3492
3493 /* return result */
3494 parm[0] = heads;
3495 parm[1] = sectors;
3496 parm[2] = cylinders;
3497
3498 return 0;
3499 }
3500
3501 /**
3502 * ipr_find_starget - Find target based on bus/target.
3503 * @starget: scsi target struct
3504 *
3505 * Return value:
3506 * resource entry pointer if found / NULL if not found
3507 **/
3508 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3509 {
3510 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3511 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3512 struct ipr_resource_entry *res;
3513
3514 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3515 if ((res->cfgte.res_addr.bus == starget->channel) &&
3516 (res->cfgte.res_addr.target == starget->id) &&
3517 (res->cfgte.res_addr.lun == 0)) {
3518 return res;
3519 }
3520 }
3521
3522 return NULL;
3523 }
3524
3525 static struct ata_port_info sata_port_info;
3526
3527 /**
3528 * ipr_target_alloc - Prepare for commands to a SCSI target
3529 * @starget: scsi target struct
3530 *
3531 * If the device is a SATA device, this function allocates an
3532 * ATA port with libata, else it does nothing.
3533 *
3534 * Return value:
3535 * 0 on success / non-0 on failure
3536 **/
3537 static int ipr_target_alloc(struct scsi_target *starget)
3538 {
3539 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3540 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3541 struct ipr_sata_port *sata_port;
3542 struct ata_port *ap;
3543 struct ipr_resource_entry *res;
3544 unsigned long lock_flags;
3545
3546 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3547 res = ipr_find_starget(starget);
3548 starget->hostdata = NULL;
3549
3550 if (res && ipr_is_gata(res)) {
3551 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3552 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3553 if (!sata_port)
3554 return -ENOMEM;
3555
3556 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3557 if (ap) {
3558 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3559 sata_port->ioa_cfg = ioa_cfg;
3560 sata_port->ap = ap;
3561 sata_port->res = res;
3562
3563 res->sata_port = sata_port;
3564 ap->private_data = sata_port;
3565 starget->hostdata = sata_port;
3566 } else {
3567 kfree(sata_port);
3568 return -ENOMEM;
3569 }
3570 }
3571 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3572
3573 return 0;
3574 }
3575
3576 /**
3577 * ipr_target_destroy - Destroy a SCSI target
3578 * @starget: scsi target struct
3579 *
3580 * If the device was a SATA device, this function frees the libata
3581 * ATA port, else it does nothing.
3582 *
3583 **/
3584 static void ipr_target_destroy(struct scsi_target *starget)
3585 {
3586 struct ipr_sata_port *sata_port = starget->hostdata;
3587
3588 if (sata_port) {
3589 starget->hostdata = NULL;
3590 ata_sas_port_destroy(sata_port->ap);
3591 kfree(sata_port);
3592 }
3593 }
3594
3595 /**
3596 * ipr_find_sdev - Find device based on bus/target/lun.
3597 * @sdev: scsi device struct
3598 *
3599 * Return value:
3600 * resource entry pointer if found / NULL if not found
3601 **/
3602 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3603 {
3604 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3605 struct ipr_resource_entry *res;
3606
3607 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3608 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3609 (res->cfgte.res_addr.target == sdev->id) &&
3610 (res->cfgte.res_addr.lun == sdev->lun))
3611 return res;
3612 }
3613
3614 return NULL;
3615 }
3616
3617 /**
3618 * ipr_slave_destroy - Unconfigure a SCSI device
3619 * @sdev: scsi device struct
3620 *
3621 * Return value:
3622 * nothing
3623 **/
3624 static void ipr_slave_destroy(struct scsi_device *sdev)
3625 {
3626 struct ipr_resource_entry *res;
3627 struct ipr_ioa_cfg *ioa_cfg;
3628 unsigned long lock_flags = 0;
3629
3630 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3631
3632 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3633 res = (struct ipr_resource_entry *) sdev->hostdata;
3634 if (res) {
3635 if (res->sata_port)
3636 ata_port_disable(res->sata_port->ap);
3637 sdev->hostdata = NULL;
3638 res->sdev = NULL;
3639 res->sata_port = NULL;
3640 }
3641 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3642 }
3643
3644 /**
3645 * ipr_slave_configure - Configure a SCSI device
3646 * @sdev: scsi device struct
3647 *
3648 * This function configures the specified scsi device.
3649 *
3650 * Return value:
3651 * 0 on success
3652 **/
3653 static int ipr_slave_configure(struct scsi_device *sdev)
3654 {
3655 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3656 struct ipr_resource_entry *res;
3657 struct ata_port *ap = NULL;
3658 unsigned long lock_flags = 0;
3659
3660 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3661 res = sdev->hostdata;
3662 if (res) {
3663 if (ipr_is_af_dasd_device(res))
3664 sdev->type = TYPE_RAID;
3665 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
3666 sdev->scsi_level = 4;
3667 sdev->no_uld_attach = 1;
3668 }
3669 if (ipr_is_vset_device(res)) {
3670 blk_queue_rq_timeout(sdev->request_queue,
3671 IPR_VSET_RW_TIMEOUT);
3672 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3673 }
3674 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
3675 sdev->allow_restart = 1;
3676 if (ipr_is_gata(res) && res->sata_port)
3677 ap = res->sata_port->ap;
3678 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3679
3680 if (ap) {
3681 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3682 ata_sas_slave_configure(sdev, ap);
3683 } else
3684 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3685 return 0;
3686 }
3687 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3688 return 0;
3689 }
3690
3691 /**
3692 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3693 * @sdev: scsi device struct
3694 *
3695 * This function initializes an ATA port so that future commands
3696 * sent through queuecommand will work.
3697 *
3698 * Return value:
3699 * 0 on success
3700 **/
3701 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3702 {
3703 struct ipr_sata_port *sata_port = NULL;
3704 int rc = -ENXIO;
3705
3706 ENTER;
3707 if (sdev->sdev_target)
3708 sata_port = sdev->sdev_target->hostdata;
3709 if (sata_port)
3710 rc = ata_sas_port_init(sata_port->ap);
3711 if (rc)
3712 ipr_slave_destroy(sdev);
3713
3714 LEAVE;
3715 return rc;
3716 }
3717
3718 /**
3719 * ipr_slave_alloc - Prepare for commands to a device.
3720 * @sdev: scsi device struct
3721 *
3722 * This function saves a pointer to the resource entry
3723 * in the scsi device struct if the device exists. We
3724 * can then use this pointer in ipr_queuecommand when
3725 * handling new commands.
3726 *
3727 * Return value:
3728 * 0 on success / -ENXIO if device does not exist
3729 **/
3730 static int ipr_slave_alloc(struct scsi_device *sdev)
3731 {
3732 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3733 struct ipr_resource_entry *res;
3734 unsigned long lock_flags;
3735 int rc = -ENXIO;
3736
3737 sdev->hostdata = NULL;
3738
3739 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3740
3741 res = ipr_find_sdev(sdev);
3742 if (res) {
3743 res->sdev = sdev;
3744 res->add_to_ml = 0;
3745 res->in_erp = 0;
3746 sdev->hostdata = res;
3747 if (!ipr_is_naca_model(res))
3748 res->needs_sync_complete = 1;
3749 rc = 0;
3750 if (ipr_is_gata(res)) {
3751 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3752 return ipr_ata_slave_alloc(sdev);
3753 }
3754 }
3755
3756 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3757
3758 return rc;
3759 }
3760
3761 /**
3762 * ipr_eh_host_reset - Reset the host adapter
3763 * @scsi_cmd: scsi command struct
3764 *
3765 * Return value:
3766 * SUCCESS / FAILED
3767 **/
3768 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
3769 {
3770 struct ipr_ioa_cfg *ioa_cfg;
3771 int rc;
3772
3773 ENTER;
3774 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3775
3776 dev_err(&ioa_cfg->pdev->dev,
3777 "Adapter being reset as a result of error recovery.\n");
3778
3779 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3780 ioa_cfg->sdt_state = GET_DUMP;
3781
3782 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3783
3784 LEAVE;
3785 return rc;
3786 }
3787
3788 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3789 {
3790 int rc;
3791
3792 spin_lock_irq(cmd->device->host->host_lock);
3793 rc = __ipr_eh_host_reset(cmd);
3794 spin_unlock_irq(cmd->device->host->host_lock);
3795
3796 return rc;
3797 }
3798
3799 /**
3800 * ipr_device_reset - Reset the device
3801 * @ioa_cfg: ioa config struct
3802 * @res: resource entry struct
3803 *
3804 * This function issues a device reset to the affected device.
3805 * If the device is a SCSI device, a LUN reset will be sent
3806 * to the device first. If that does not work, a target reset
3807 * will be sent. If the device is a SATA device, a PHY reset will
3808 * be sent.
3809 *
3810 * Return value:
3811 * 0 on success / non-zero on failure
3812 **/
3813 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3814 struct ipr_resource_entry *res)
3815 {
3816 struct ipr_cmnd *ipr_cmd;
3817 struct ipr_ioarcb *ioarcb;
3818 struct ipr_cmd_pkt *cmd_pkt;
3819 struct ipr_ioarcb_ata_regs *regs;
3820 u32 ioasc;
3821
3822 ENTER;
3823 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3824 ioarcb = &ipr_cmd->ioarcb;
3825 cmd_pkt = &ioarcb->cmd_pkt;
3826 regs = &ioarcb->add_data.u.regs;
3827
3828 ioarcb->res_handle = res->cfgte.res_handle;
3829 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3830 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3831 if (ipr_is_gata(res)) {
3832 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3833 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3834 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3835 }
3836
3837 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3838 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3839 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3840 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3841 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3842 sizeof(struct ipr_ioasa_gata));
3843
3844 LEAVE;
3845 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3846 }
3847
3848 /**
3849 * ipr_sata_reset - Reset the SATA port
3850 * @link: SATA link to reset
3851 * @classes: class of the attached device
3852 *
3853 * This function issues a SATA phy reset to the affected ATA link.
3854 *
3855 * Return value:
3856 * 0 on success / non-zero on failure
3857 **/
3858 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
3859 unsigned long deadline)
3860 {
3861 struct ipr_sata_port *sata_port = link->ap->private_data;
3862 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3863 struct ipr_resource_entry *res;
3864 unsigned long lock_flags = 0;
3865 int rc = -ENXIO;
3866
3867 ENTER;
3868 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3869 while(ioa_cfg->in_reset_reload) {
3870 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3871 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3872 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3873 }
3874
3875 res = sata_port->res;
3876 if (res) {
3877 rc = ipr_device_reset(ioa_cfg, res);
3878 switch(res->cfgte.proto) {
3879 case IPR_PROTO_SATA:
3880 case IPR_PROTO_SAS_STP:
3881 *classes = ATA_DEV_ATA;
3882 break;
3883 case IPR_PROTO_SATA_ATAPI:
3884 case IPR_PROTO_SAS_STP_ATAPI:
3885 *classes = ATA_DEV_ATAPI;
3886 break;
3887 default:
3888 *classes = ATA_DEV_UNKNOWN;
3889 break;
3890 };
3891 }
3892
3893 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3894 LEAVE;
3895 return rc;
3896 }
3897
3898 /**
3899 * ipr_eh_dev_reset - Reset the device
3900 * @scsi_cmd: scsi command struct
3901 *
3902 * This function issues a device reset to the affected device.
3903 * A LUN reset will be sent to the device first. If that does
3904 * not work, a target reset will be sent.
3905 *
3906 * Return value:
3907 * SUCCESS / FAILED
3908 **/
3909 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
3910 {
3911 struct ipr_cmnd *ipr_cmd;
3912 struct ipr_ioa_cfg *ioa_cfg;
3913 struct ipr_resource_entry *res;
3914 struct ata_port *ap;
3915 int rc = 0;
3916
3917 ENTER;
3918 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3919 res = scsi_cmd->device->hostdata;
3920
3921 if (!res)
3922 return FAILED;
3923
3924 /*
3925 * If we are currently going through reset/reload, return failed. This will force the
3926 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3927 * reset to complete
3928 */
3929 if (ioa_cfg->in_reset_reload)
3930 return FAILED;
3931 if (ioa_cfg->ioa_is_dead)
3932 return FAILED;
3933
3934 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3935 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3936 if (ipr_cmd->scsi_cmd)
3937 ipr_cmd->done = ipr_scsi_eh_done;
3938 if (ipr_cmd->qc)
3939 ipr_cmd->done = ipr_sata_eh_done;
3940 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
3941 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
3942 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
3943 }
3944 }
3945 }
3946
3947 res->resetting_device = 1;
3948 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
3949
3950 if (ipr_is_gata(res) && res->sata_port) {
3951 ap = res->sata_port->ap;
3952 spin_unlock_irq(scsi_cmd->device->host->host_lock);
3953 ata_std_error_handler(ap);
3954 spin_lock_irq(scsi_cmd->device->host->host_lock);
3955
3956 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3957 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3958 rc = -EIO;
3959 break;
3960 }
3961 }
3962 } else
3963 rc = ipr_device_reset(ioa_cfg, res);
3964 res->resetting_device = 0;
3965
3966 LEAVE;
3967 return (rc ? FAILED : SUCCESS);
3968 }
3969
3970 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3971 {
3972 int rc;
3973
3974 spin_lock_irq(cmd->device->host->host_lock);
3975 rc = __ipr_eh_dev_reset(cmd);
3976 spin_unlock_irq(cmd->device->host->host_lock);
3977
3978 return rc;
3979 }
3980
3981 /**
3982 * ipr_bus_reset_done - Op done function for bus reset.
3983 * @ipr_cmd: ipr command struct
3984 *
3985 * This function is the op done function for a bus reset
3986 *
3987 * Return value:
3988 * none
3989 **/
3990 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3991 {
3992 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3993 struct ipr_resource_entry *res;
3994
3995 ENTER;
3996 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3997 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3998 sizeof(res->cfgte.res_handle))) {
3999 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
4000 break;
4001 }
4002 }
4003
4004 /*
4005 * If abort has not completed, indicate the reset has, else call the
4006 * abort's done function to wake the sleeping eh thread
4007 */
4008 if (ipr_cmd->sibling->sibling)
4009 ipr_cmd->sibling->sibling = NULL;
4010 else
4011 ipr_cmd->sibling->done(ipr_cmd->sibling);
4012
4013 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4014 LEAVE;
4015 }
4016
4017 /**
4018 * ipr_abort_timeout - An abort task has timed out
4019 * @ipr_cmd: ipr command struct
4020 *
4021 * This function handles when an abort task times out. If this
4022 * happens we issue a bus reset since we have resources tied
4023 * up that must be freed before returning to the midlayer.
4024 *
4025 * Return value:
4026 * none
4027 **/
4028 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4029 {
4030 struct ipr_cmnd *reset_cmd;
4031 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4032 struct ipr_cmd_pkt *cmd_pkt;
4033 unsigned long lock_flags = 0;
4034
4035 ENTER;
4036 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4037 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4038 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4039 return;
4040 }
4041
4042 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
4043 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4044 ipr_cmd->sibling = reset_cmd;
4045 reset_cmd->sibling = ipr_cmd;
4046 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4047 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4048 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4049 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4050 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4051
4052 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4053 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4054 LEAVE;
4055 }
4056
4057 /**
4058 * ipr_cancel_op - Cancel specified op
4059 * @scsi_cmd: scsi command struct
4060 *
4061 * This function cancels specified op.
4062 *
4063 * Return value:
4064 * SUCCESS / FAILED
4065 **/
4066 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4067 {
4068 struct ipr_cmnd *ipr_cmd;
4069 struct ipr_ioa_cfg *ioa_cfg;
4070 struct ipr_resource_entry *res;
4071 struct ipr_cmd_pkt *cmd_pkt;
4072 u32 ioasc;
4073 int op_found = 0;
4074
4075 ENTER;
4076 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4077 res = scsi_cmd->device->hostdata;
4078
4079 /* If we are currently going through reset/reload, return failed.
4080 * This will force the mid-layer to call ipr_eh_host_reset,
4081 * which will then go to sleep and wait for the reset to complete
4082 */
4083 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4084 return FAILED;
4085 if (!res || !ipr_is_gscsi(res))
4086 return FAILED;
4087
4088 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4089 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4090 ipr_cmd->done = ipr_scsi_eh_done;
4091 op_found = 1;
4092 break;
4093 }
4094 }
4095
4096 if (!op_found)
4097 return SUCCESS;
4098
4099 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4100 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4101 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4102 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4103 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4104 ipr_cmd->u.sdev = scsi_cmd->device;
4105
4106 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4107 scsi_cmd->cmnd[0]);
4108 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4109 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4110
4111 /*
4112 * If the abort task timed out and we sent a bus reset, we will get
4113 * one the following responses to the abort
4114 */
4115 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4116 ioasc = 0;
4117 ipr_trace;
4118 }
4119
4120 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4121 if (!ipr_is_naca_model(res))
4122 res->needs_sync_complete = 1;
4123
4124 LEAVE;
4125 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4126 }
4127
4128 /**
4129 * ipr_eh_abort - Abort a single op
4130 * @scsi_cmd: scsi command struct
4131 *
4132 * Return value:
4133 * SUCCESS / FAILED
4134 **/
4135 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4136 {
4137 unsigned long flags;
4138 int rc;
4139
4140 ENTER;
4141
4142 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4143 rc = ipr_cancel_op(scsi_cmd);
4144 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4145
4146 LEAVE;
4147 return rc;
4148 }
4149
4150 /**
4151 * ipr_handle_other_interrupt - Handle "other" interrupts
4152 * @ioa_cfg: ioa config struct
4153 * @int_reg: interrupt register
4154 *
4155 * Return value:
4156 * IRQ_NONE / IRQ_HANDLED
4157 **/
4158 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4159 volatile u32 int_reg)
4160 {
4161 irqreturn_t rc = IRQ_HANDLED;
4162
4163 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4164 /* Mask the interrupt */
4165 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4166
4167 /* Clear the interrupt */
4168 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4169 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4170
4171 list_del(&ioa_cfg->reset_cmd->queue);
4172 del_timer(&ioa_cfg->reset_cmd->timer);
4173 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4174 } else {
4175 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4176 ioa_cfg->ioa_unit_checked = 1;
4177 else
4178 dev_err(&ioa_cfg->pdev->dev,
4179 "Permanent IOA failure. 0x%08X\n", int_reg);
4180
4181 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4182 ioa_cfg->sdt_state = GET_DUMP;
4183
4184 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4185 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4186 }
4187
4188 return rc;
4189 }
4190
4191 /**
4192 * ipr_isr - Interrupt service routine
4193 * @irq: irq number
4194 * @devp: pointer to ioa config struct
4195 *
4196 * Return value:
4197 * IRQ_NONE / IRQ_HANDLED
4198 **/
4199 static irqreturn_t ipr_isr(int irq, void *devp)
4200 {
4201 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4202 unsigned long lock_flags = 0;
4203 volatile u32 int_reg, int_mask_reg;
4204 u32 ioasc;
4205 u16 cmd_index;
4206 struct ipr_cmnd *ipr_cmd;
4207 irqreturn_t rc = IRQ_NONE;
4208
4209 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4210
4211 /* If interrupts are disabled, ignore the interrupt */
4212 if (!ioa_cfg->allow_interrupts) {
4213 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4214 return IRQ_NONE;
4215 }
4216
4217 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4218 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4219
4220 /* If an interrupt on the adapter did not occur, ignore it */
4221 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4222 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4223 return IRQ_NONE;
4224 }
4225
4226 while (1) {
4227 ipr_cmd = NULL;
4228
4229 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4230 ioa_cfg->toggle_bit) {
4231
4232 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4233 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4234
4235 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4236 ioa_cfg->errors_logged++;
4237 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
4238
4239 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4240 ioa_cfg->sdt_state = GET_DUMP;
4241
4242 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4243 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4244 return IRQ_HANDLED;
4245 }
4246
4247 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4248
4249 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4250
4251 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4252
4253 list_del(&ipr_cmd->queue);
4254 del_timer(&ipr_cmd->timer);
4255 ipr_cmd->done(ipr_cmd);
4256
4257 rc = IRQ_HANDLED;
4258
4259 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4260 ioa_cfg->hrrq_curr++;
4261 } else {
4262 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4263 ioa_cfg->toggle_bit ^= 1u;
4264 }
4265 }
4266
4267 if (ipr_cmd != NULL) {
4268 /* Clear the PCI interrupt */
4269 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
4270 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4271 } else
4272 break;
4273 }
4274
4275 if (unlikely(rc == IRQ_NONE))
4276 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4277
4278 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4279 return rc;
4280 }
4281
4282 /**
4283 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
4284 * @ioa_cfg: ioa config struct
4285 * @ipr_cmd: ipr command struct
4286 *
4287 * Return value:
4288 * 0 on success / -1 on failure
4289 **/
4290 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
4291 struct ipr_cmnd *ipr_cmd)
4292 {
4293 int i, nseg;
4294 struct scatterlist *sg;
4295 u32 length;
4296 u32 ioadl_flags = 0;
4297 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4298 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4299 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4300
4301 length = scsi_bufflen(scsi_cmd);
4302 if (!length)
4303 return 0;
4304
4305 nseg = scsi_dma_map(scsi_cmd);
4306 if (nseg < 0) {
4307 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4308 return -1;
4309 }
4310
4311 ipr_cmd->dma_use_sg = nseg;
4312
4313 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4314 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4315 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4316 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4317 ioarcb->write_ioadl_len =
4318 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4319 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4320 ioadl_flags = IPR_IOADL_FLAGS_READ;
4321 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4322 ioarcb->read_ioadl_len =
4323 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4324 }
4325
4326 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) {
4327 ioadl = ioarcb->add_data.u.ioadl;
4328 ioarcb->write_ioadl_addr =
4329 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4330 offsetof(struct ipr_ioarcb, add_data));
4331 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4332 }
4333
4334 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
4335 ioadl[i].flags_and_data_len =
4336 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
4337 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
4338 }
4339
4340 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4341 return 0;
4342 }
4343
4344 /**
4345 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4346 * @scsi_cmd: scsi command struct
4347 *
4348 * Return value:
4349 * task attributes
4350 **/
4351 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4352 {
4353 u8 tag[2];
4354 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4355
4356 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4357 switch (tag[0]) {
4358 case MSG_SIMPLE_TAG:
4359 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4360 break;
4361 case MSG_HEAD_TAG:
4362 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4363 break;
4364 case MSG_ORDERED_TAG:
4365 rc = IPR_FLAGS_LO_ORDERED_TASK;
4366 break;
4367 };
4368 }
4369
4370 return rc;
4371 }
4372
4373 /**
4374 * ipr_erp_done - Process completion of ERP for a device
4375 * @ipr_cmd: ipr command struct
4376 *
4377 * This function copies the sense buffer into the scsi_cmd
4378 * struct and pushes the scsi_done function.
4379 *
4380 * Return value:
4381 * nothing
4382 **/
4383 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4384 {
4385 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4386 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4387 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4388 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4389
4390 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4391 scsi_cmd->result |= (DID_ERROR << 16);
4392 scmd_printk(KERN_ERR, scsi_cmd,
4393 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
4394 } else {
4395 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4396 SCSI_SENSE_BUFFERSIZE);
4397 }
4398
4399 if (res) {
4400 if (!ipr_is_naca_model(res))
4401 res->needs_sync_complete = 1;
4402 res->in_erp = 0;
4403 }
4404 scsi_dma_unmap(ipr_cmd->scsi_cmd);
4405 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4406 scsi_cmd->scsi_done(scsi_cmd);
4407 }
4408
4409 /**
4410 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4411 * @ipr_cmd: ipr command struct
4412 *
4413 * Return value:
4414 * none
4415 **/
4416 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4417 {
4418 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4419 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4420 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
4421
4422 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4423 ioarcb->write_data_transfer_length = 0;
4424 ioarcb->read_data_transfer_length = 0;
4425 ioarcb->write_ioadl_len = 0;
4426 ioarcb->read_ioadl_len = 0;
4427 ioasa->ioasc = 0;
4428 ioasa->residual_data_len = 0;
4429 ioarcb->write_ioadl_addr =
4430 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
4431 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4432 }
4433
4434 /**
4435 * ipr_erp_request_sense - Send request sense to a device
4436 * @ipr_cmd: ipr command struct
4437 *
4438 * This function sends a request sense to a device as a result
4439 * of a check condition.
4440 *
4441 * Return value:
4442 * nothing
4443 **/
4444 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4445 {
4446 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4447 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4448
4449 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4450 ipr_erp_done(ipr_cmd);
4451 return;
4452 }
4453
4454 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4455
4456 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4457 cmd_pkt->cdb[0] = REQUEST_SENSE;
4458 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4459 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4460 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4461 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4462
4463 ipr_cmd->ioadl[0].flags_and_data_len =
4464 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4465 ipr_cmd->ioadl[0].address =
4466 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4467
4468 ipr_cmd->ioarcb.read_ioadl_len =
4469 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4470 ipr_cmd->ioarcb.read_data_transfer_length =
4471 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4472
4473 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4474 IPR_REQUEST_SENSE_TIMEOUT * 2);
4475 }
4476
4477 /**
4478 * ipr_erp_cancel_all - Send cancel all to a device
4479 * @ipr_cmd: ipr command struct
4480 *
4481 * This function sends a cancel all to a device to clear the
4482 * queue. If we are running TCQ on the device, QERR is set to 1,
4483 * which means all outstanding ops have been dropped on the floor.
4484 * Cancel all will return them to us.
4485 *
4486 * Return value:
4487 * nothing
4488 **/
4489 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4490 {
4491 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4492 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4493 struct ipr_cmd_pkt *cmd_pkt;
4494
4495 res->in_erp = 1;
4496
4497 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4498
4499 if (!scsi_get_tag_type(scsi_cmd->device)) {
4500 ipr_erp_request_sense(ipr_cmd);
4501 return;
4502 }
4503
4504 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4505 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4506 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4507
4508 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4509 IPR_CANCEL_ALL_TIMEOUT);
4510 }
4511
4512 /**
4513 * ipr_dump_ioasa - Dump contents of IOASA
4514 * @ioa_cfg: ioa config struct
4515 * @ipr_cmd: ipr command struct
4516 * @res: resource entry struct
4517 *
4518 * This function is invoked by the interrupt handler when ops
4519 * fail. It will log the IOASA if appropriate. Only called
4520 * for GPDD ops.
4521 *
4522 * Return value:
4523 * none
4524 **/
4525 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
4526 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
4527 {
4528 int i;
4529 u16 data_len;
4530 u32 ioasc, fd_ioasc;
4531 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4532 __be32 *ioasa_data = (__be32 *)ioasa;
4533 int error_index;
4534
4535 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
4536 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK;
4537
4538 if (0 == ioasc)
4539 return;
4540
4541 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4542 return;
4543
4544 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
4545 error_index = ipr_get_error(fd_ioasc);
4546 else
4547 error_index = ipr_get_error(ioasc);
4548
4549 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4550 /* Don't log an error if the IOA already logged one */
4551 if (ioasa->ilid != 0)
4552 return;
4553
4554 if (!ipr_is_gscsi(res))
4555 return;
4556
4557 if (ipr_error_table[error_index].log_ioasa == 0)
4558 return;
4559 }
4560
4561 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
4562
4563 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4564 data_len = sizeof(struct ipr_ioasa);
4565 else
4566 data_len = be16_to_cpu(ioasa->ret_stat_len);
4567
4568 ipr_err("IOASA Dump:\n");
4569
4570 for (i = 0; i < data_len / 4; i += 4) {
4571 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4572 be32_to_cpu(ioasa_data[i]),
4573 be32_to_cpu(ioasa_data[i+1]),
4574 be32_to_cpu(ioasa_data[i+2]),
4575 be32_to_cpu(ioasa_data[i+3]));
4576 }
4577 }
4578
4579 /**
4580 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4581 * @ioasa: IOASA
4582 * @sense_buf: sense data buffer
4583 *
4584 * Return value:
4585 * none
4586 **/
4587 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4588 {
4589 u32 failing_lba;
4590 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4591 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4592 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4593 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4594
4595 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4596
4597 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4598 return;
4599
4600 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4601
4602 if (ipr_is_vset_device(res) &&
4603 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4604 ioasa->u.vset.failing_lba_hi != 0) {
4605 sense_buf[0] = 0x72;
4606 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4607 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4608 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4609
4610 sense_buf[7] = 12;
4611 sense_buf[8] = 0;
4612 sense_buf[9] = 0x0A;
4613 sense_buf[10] = 0x80;
4614
4615 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4616
4617 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4618 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4619 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4620 sense_buf[15] = failing_lba & 0x000000ff;
4621
4622 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4623
4624 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4625 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4626 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4627 sense_buf[19] = failing_lba & 0x000000ff;
4628 } else {
4629 sense_buf[0] = 0x70;
4630 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4631 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4632 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4633
4634 /* Illegal request */
4635 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4636 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4637 sense_buf[7] = 10; /* additional length */
4638
4639 /* IOARCB was in error */
4640 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4641 sense_buf[15] = 0xC0;
4642 else /* Parameter data was invalid */
4643 sense_buf[15] = 0x80;
4644
4645 sense_buf[16] =
4646 ((IPR_FIELD_POINTER_MASK &
4647 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4648 sense_buf[17] =
4649 (IPR_FIELD_POINTER_MASK &
4650 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4651 } else {
4652 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4653 if (ipr_is_vset_device(res))
4654 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4655 else
4656 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4657
4658 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4659 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4660 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4661 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4662 sense_buf[6] = failing_lba & 0x000000ff;
4663 }
4664
4665 sense_buf[7] = 6; /* additional length */
4666 }
4667 }
4668 }
4669
4670 /**
4671 * ipr_get_autosense - Copy autosense data to sense buffer
4672 * @ipr_cmd: ipr command struct
4673 *
4674 * This function copies the autosense buffer to the buffer
4675 * in the scsi_cmd, if there is autosense available.
4676 *
4677 * Return value:
4678 * 1 if autosense was available / 0 if not
4679 **/
4680 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4681 {
4682 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4683
4684 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
4685 return 0;
4686
4687 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4688 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4689 SCSI_SENSE_BUFFERSIZE));
4690 return 1;
4691 }
4692
4693 /**
4694 * ipr_erp_start - Process an error response for a SCSI op
4695 * @ioa_cfg: ioa config struct
4696 * @ipr_cmd: ipr command struct
4697 *
4698 * This function determines whether or not to initiate ERP
4699 * on the affected device.
4700 *
4701 * Return value:
4702 * nothing
4703 **/
4704 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4705 struct ipr_cmnd *ipr_cmd)
4706 {
4707 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4708 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4709 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4710 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
4711
4712 if (!res) {
4713 ipr_scsi_eh_done(ipr_cmd);
4714 return;
4715 }
4716
4717 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
4718 ipr_gen_sense(ipr_cmd);
4719
4720 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4721
4722 switch (masked_ioasc) {
4723 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
4724 if (ipr_is_naca_model(res))
4725 scsi_cmd->result |= (DID_ABORT << 16);
4726 else
4727 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4728 break;
4729 case IPR_IOASC_IR_RESOURCE_HANDLE:
4730 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
4731 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4732 break;
4733 case IPR_IOASC_HW_SEL_TIMEOUT:
4734 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4735 if (!ipr_is_naca_model(res))
4736 res->needs_sync_complete = 1;
4737 break;
4738 case IPR_IOASC_SYNC_REQUIRED:
4739 if (!res->in_erp)
4740 res->needs_sync_complete = 1;
4741 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4742 break;
4743 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
4744 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
4745 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4746 break;
4747 case IPR_IOASC_BUS_WAS_RESET:
4748 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4749 /*
4750 * Report the bus reset and ask for a retry. The device
4751 * will give CC/UA the next command.
4752 */
4753 if (!res->resetting_device)
4754 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4755 scsi_cmd->result |= (DID_ERROR << 16);
4756 if (!ipr_is_naca_model(res))
4757 res->needs_sync_complete = 1;
4758 break;
4759 case IPR_IOASC_HW_DEV_BUS_STATUS:
4760 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4761 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
4762 if (!ipr_get_autosense(ipr_cmd)) {
4763 if (!ipr_is_naca_model(res)) {
4764 ipr_erp_cancel_all(ipr_cmd);
4765 return;
4766 }
4767 }
4768 }
4769 if (!ipr_is_naca_model(res))
4770 res->needs_sync_complete = 1;
4771 break;
4772 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4773 break;
4774 default:
4775 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4776 scsi_cmd->result |= (DID_ERROR << 16);
4777 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
4778 res->needs_sync_complete = 1;
4779 break;
4780 }
4781
4782 scsi_dma_unmap(ipr_cmd->scsi_cmd);
4783 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4784 scsi_cmd->scsi_done(scsi_cmd);
4785 }
4786
4787 /**
4788 * ipr_scsi_done - mid-layer done function
4789 * @ipr_cmd: ipr command struct
4790 *
4791 * This function is invoked by the interrupt handler for
4792 * ops generated by the SCSI mid-layer
4793 *
4794 * Return value:
4795 * none
4796 **/
4797 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4798 {
4799 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4800 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4801 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4802
4803 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->ioasa.residual_data_len));
4804
4805 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
4806 scsi_dma_unmap(ipr_cmd->scsi_cmd);
4807 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4808 scsi_cmd->scsi_done(scsi_cmd);
4809 } else
4810 ipr_erp_start(ioa_cfg, ipr_cmd);
4811 }
4812
4813 /**
4814 * ipr_queuecommand - Queue a mid-layer request
4815 * @scsi_cmd: scsi command struct
4816 * @done: done function
4817 *
4818 * This function queues a request generated by the mid-layer.
4819 *
4820 * Return value:
4821 * 0 on success
4822 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4823 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4824 **/
4825 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4826 void (*done) (struct scsi_cmnd *))
4827 {
4828 struct ipr_ioa_cfg *ioa_cfg;
4829 struct ipr_resource_entry *res;
4830 struct ipr_ioarcb *ioarcb;
4831 struct ipr_cmnd *ipr_cmd;
4832 int rc = 0;
4833
4834 scsi_cmd->scsi_done = done;
4835 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4836 res = scsi_cmd->device->hostdata;
4837 scsi_cmd->result = (DID_OK << 16);
4838
4839 /*
4840 * We are currently blocking all devices due to a host reset
4841 * We have told the host to stop giving us new requests, but
4842 * ERP ops don't count. FIXME
4843 */
4844 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4845 return SCSI_MLQUEUE_HOST_BUSY;
4846
4847 /*
4848 * FIXME - Create scsi_set_host_offline interface
4849 * and the ioa_is_dead check can be removed
4850 */
4851 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4852 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4853 scsi_cmd->result = (DID_NO_CONNECT << 16);
4854 scsi_cmd->scsi_done(scsi_cmd);
4855 return 0;
4856 }
4857
4858 if (ipr_is_gata(res) && res->sata_port)
4859 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4860
4861 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4862 ioarcb = &ipr_cmd->ioarcb;
4863 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4864
4865 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4866 ipr_cmd->scsi_cmd = scsi_cmd;
4867 ioarcb->res_handle = res->cfgte.res_handle;
4868 ipr_cmd->done = ipr_scsi_done;
4869 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4870
4871 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4872 if (scsi_cmd->underflow == 0)
4873 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4874
4875 if (res->needs_sync_complete) {
4876 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4877 res->needs_sync_complete = 0;
4878 }
4879
4880 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4881 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4882 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4883 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4884 }
4885
4886 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4887 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4888 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4889
4890 if (likely(rc == 0))
4891 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4892
4893 if (likely(rc == 0)) {
4894 mb();
4895 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4896 ioa_cfg->regs.ioarrin_reg);
4897 } else {
4898 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4899 return SCSI_MLQUEUE_HOST_BUSY;
4900 }
4901
4902 return 0;
4903 }
4904
4905 /**
4906 * ipr_ioctl - IOCTL handler
4907 * @sdev: scsi device struct
4908 * @cmd: IOCTL cmd
4909 * @arg: IOCTL arg
4910 *
4911 * Return value:
4912 * 0 on success / other on failure
4913 **/
4914 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
4915 {
4916 struct ipr_resource_entry *res;
4917
4918 res = (struct ipr_resource_entry *)sdev->hostdata;
4919 if (res && ipr_is_gata(res)) {
4920 if (cmd == HDIO_GET_IDENTITY)
4921 return -ENOTTY;
4922 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
4923 }
4924
4925 return -EINVAL;
4926 }
4927
4928 /**
4929 * ipr_info - Get information about the card/driver
4930 * @scsi_host: scsi host struct
4931 *
4932 * Return value:
4933 * pointer to buffer with description string
4934 **/
4935 static const char * ipr_ioa_info(struct Scsi_Host *host)
4936 {
4937 static char buffer[512];
4938 struct ipr_ioa_cfg *ioa_cfg;
4939 unsigned long lock_flags = 0;
4940
4941 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4942
4943 spin_lock_irqsave(host->host_lock, lock_flags);
4944 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4945 spin_unlock_irqrestore(host->host_lock, lock_flags);
4946
4947 return buffer;
4948 }
4949
4950 static struct scsi_host_template driver_template = {
4951 .module = THIS_MODULE,
4952 .name = "IPR",
4953 .info = ipr_ioa_info,
4954 .ioctl = ipr_ioctl,
4955 .queuecommand = ipr_queuecommand,
4956 .eh_abort_handler = ipr_eh_abort,
4957 .eh_device_reset_handler = ipr_eh_dev_reset,
4958 .eh_host_reset_handler = ipr_eh_host_reset,
4959 .slave_alloc = ipr_slave_alloc,
4960 .slave_configure = ipr_slave_configure,
4961 .slave_destroy = ipr_slave_destroy,
4962 .target_alloc = ipr_target_alloc,
4963 .target_destroy = ipr_target_destroy,
4964 .change_queue_depth = ipr_change_queue_depth,
4965 .change_queue_type = ipr_change_queue_type,
4966 .bios_param = ipr_biosparam,
4967 .can_queue = IPR_MAX_COMMANDS,
4968 .this_id = -1,
4969 .sg_tablesize = IPR_MAX_SGLIST,
4970 .max_sectors = IPR_IOA_MAX_SECTORS,
4971 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4972 .use_clustering = ENABLE_CLUSTERING,
4973 .shost_attrs = ipr_ioa_attrs,
4974 .sdev_attrs = ipr_dev_attrs,
4975 .proc_name = IPR_NAME
4976 };
4977
4978 /**
4979 * ipr_ata_phy_reset - libata phy_reset handler
4980 * @ap: ata port to reset
4981 *
4982 **/
4983 static void ipr_ata_phy_reset(struct ata_port *ap)
4984 {
4985 unsigned long flags;
4986 struct ipr_sata_port *sata_port = ap->private_data;
4987 struct ipr_resource_entry *res = sata_port->res;
4988 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4989 int rc;
4990
4991 ENTER;
4992 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4993 while(ioa_cfg->in_reset_reload) {
4994 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4995 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4996 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4997 }
4998
4999 if (!ioa_cfg->allow_cmds)
5000 goto out_unlock;
5001
5002 rc = ipr_device_reset(ioa_cfg, res);
5003
5004 if (rc) {
5005 ata_port_disable(ap);
5006 goto out_unlock;
5007 }
5008
5009 switch(res->cfgte.proto) {
5010 case IPR_PROTO_SATA:
5011 case IPR_PROTO_SAS_STP:
5012 ap->link.device[0].class = ATA_DEV_ATA;
5013 break;
5014 case IPR_PROTO_SATA_ATAPI:
5015 case IPR_PROTO_SAS_STP_ATAPI:
5016 ap->link.device[0].class = ATA_DEV_ATAPI;
5017 break;
5018 default:
5019 ap->link.device[0].class = ATA_DEV_UNKNOWN;
5020 ata_port_disable(ap);
5021 break;
5022 };
5023
5024 out_unlock:
5025 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5026 LEAVE;
5027 }
5028
5029 /**
5030 * ipr_ata_post_internal - Cleanup after an internal command
5031 * @qc: ATA queued command
5032 *
5033 * Return value:
5034 * none
5035 **/
5036 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5037 {
5038 struct ipr_sata_port *sata_port = qc->ap->private_data;
5039 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5040 struct ipr_cmnd *ipr_cmd;
5041 unsigned long flags;
5042
5043 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5044 while(ioa_cfg->in_reset_reload) {
5045 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5046 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5047 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5048 }
5049
5050 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5051 if (ipr_cmd->qc == qc) {
5052 ipr_device_reset(ioa_cfg, sata_port->res);
5053 break;
5054 }
5055 }
5056 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5057 }
5058
5059 /**
5060 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5061 * @regs: destination
5062 * @tf: source ATA taskfile
5063 *
5064 * Return value:
5065 * none
5066 **/
5067 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5068 struct ata_taskfile *tf)
5069 {
5070 regs->feature = tf->feature;
5071 regs->nsect = tf->nsect;
5072 regs->lbal = tf->lbal;
5073 regs->lbam = tf->lbam;
5074 regs->lbah = tf->lbah;
5075 regs->device = tf->device;
5076 regs->command = tf->command;
5077 regs->hob_feature = tf->hob_feature;
5078 regs->hob_nsect = tf->hob_nsect;
5079 regs->hob_lbal = tf->hob_lbal;
5080 regs->hob_lbam = tf->hob_lbam;
5081 regs->hob_lbah = tf->hob_lbah;
5082 regs->ctl = tf->ctl;
5083 }
5084
5085 /**
5086 * ipr_sata_done - done function for SATA commands
5087 * @ipr_cmd: ipr command struct
5088 *
5089 * This function is invoked by the interrupt handler for
5090 * ops generated by the SCSI mid-layer to SATA devices
5091 *
5092 * Return value:
5093 * none
5094 **/
5095 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5096 {
5097 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5098 struct ata_queued_cmd *qc = ipr_cmd->qc;
5099 struct ipr_sata_port *sata_port = qc->ap->private_data;
5100 struct ipr_resource_entry *res = sata_port->res;
5101 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5102
5103 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5104 sizeof(struct ipr_ioasa_gata));
5105 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5106
5107 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5108 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
5109 res->cfgte.res_addr.target);
5110
5111 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5112 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5113 else
5114 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5115 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5116 ata_qc_complete(qc);
5117 }
5118
5119 /**
5120 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5121 * @ipr_cmd: ipr command struct
5122 * @qc: ATA queued command
5123 *
5124 **/
5125 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5126 struct ata_queued_cmd *qc)
5127 {
5128 u32 ioadl_flags = 0;
5129 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5130 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5131 struct ipr_ioadl_desc *last_ioadl = NULL;
5132 int len = qc->nbytes;
5133 struct scatterlist *sg;
5134 unsigned int si;
5135
5136 if (len == 0)
5137 return;
5138
5139 if (qc->dma_dir == DMA_TO_DEVICE) {
5140 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5141 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5142 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5143 ioarcb->write_ioadl_len =
5144 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5145 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5146 ioadl_flags = IPR_IOADL_FLAGS_READ;
5147 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5148 ioarcb->read_ioadl_len =
5149 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5150 }
5151
5152 for_each_sg(qc->sg, sg, qc->n_elem, si) {
5153 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5154 ioadl->address = cpu_to_be32(sg_dma_address(sg));
5155
5156 last_ioadl = ioadl;
5157 ioadl++;
5158 }
5159
5160 if (likely(last_ioadl))
5161 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5162 }
5163
5164 /**
5165 * ipr_qc_issue - Issue a SATA qc to a device
5166 * @qc: queued command
5167 *
5168 * Return value:
5169 * 0 if success
5170 **/
5171 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5172 {
5173 struct ata_port *ap = qc->ap;
5174 struct ipr_sata_port *sata_port = ap->private_data;
5175 struct ipr_resource_entry *res = sata_port->res;
5176 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5177 struct ipr_cmnd *ipr_cmd;
5178 struct ipr_ioarcb *ioarcb;
5179 struct ipr_ioarcb_ata_regs *regs;
5180
5181 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
5182 return AC_ERR_SYSTEM;
5183
5184 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5185 ioarcb = &ipr_cmd->ioarcb;
5186 regs = &ioarcb->add_data.u.regs;
5187
5188 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5189 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5190
5191 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5192 ipr_cmd->qc = qc;
5193 ipr_cmd->done = ipr_sata_done;
5194 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5195 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5196 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5197 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5198 ipr_cmd->dma_use_sg = qc->n_elem;
5199
5200 ipr_build_ata_ioadl(ipr_cmd, qc);
5201 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5202 ipr_copy_sata_tf(regs, &qc->tf);
5203 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5204 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5205
5206 switch (qc->tf.protocol) {
5207 case ATA_PROT_NODATA:
5208 case ATA_PROT_PIO:
5209 break;
5210
5211 case ATA_PROT_DMA:
5212 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5213 break;
5214
5215 case ATAPI_PROT_PIO:
5216 case ATAPI_PROT_NODATA:
5217 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5218 break;
5219
5220 case ATAPI_PROT_DMA:
5221 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5222 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5223 break;
5224
5225 default:
5226 WARN_ON(1);
5227 return AC_ERR_INVALID;
5228 }
5229
5230 mb();
5231 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5232 ioa_cfg->regs.ioarrin_reg);
5233 return 0;
5234 }
5235
5236 /**
5237 * ipr_qc_fill_rtf - Read result TF
5238 * @qc: ATA queued command
5239 *
5240 * Return value:
5241 * true
5242 **/
5243 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
5244 {
5245 struct ipr_sata_port *sata_port = qc->ap->private_data;
5246 struct ipr_ioasa_gata *g = &sata_port->ioasa;
5247 struct ata_taskfile *tf = &qc->result_tf;
5248
5249 tf->feature = g->error;
5250 tf->nsect = g->nsect;
5251 tf->lbal = g->lbal;
5252 tf->lbam = g->lbam;
5253 tf->lbah = g->lbah;
5254 tf->device = g->device;
5255 tf->command = g->status;
5256 tf->hob_nsect = g->hob_nsect;
5257 tf->hob_lbal = g->hob_lbal;
5258 tf->hob_lbam = g->hob_lbam;
5259 tf->hob_lbah = g->hob_lbah;
5260 tf->ctl = g->alt_status;
5261
5262 return true;
5263 }
5264
5265 static struct ata_port_operations ipr_sata_ops = {
5266 .phy_reset = ipr_ata_phy_reset,
5267 .hardreset = ipr_sata_reset,
5268 .post_internal_cmd = ipr_ata_post_internal,
5269 .qc_prep = ata_noop_qc_prep,
5270 .qc_issue = ipr_qc_issue,
5271 .qc_fill_rtf = ipr_qc_fill_rtf,
5272 .port_start = ata_sas_port_start,
5273 .port_stop = ata_sas_port_stop
5274 };
5275
5276 static struct ata_port_info sata_port_info = {
5277 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5278 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5279 .pio_mask = 0x10, /* pio4 */
5280 .mwdma_mask = 0x07,
5281 .udma_mask = 0x7f, /* udma0-6 */
5282 .port_ops = &ipr_sata_ops
5283 };
5284
5285 #ifdef CONFIG_PPC_PSERIES
5286 static const u16 ipr_blocked_processors[] = {
5287 PV_NORTHSTAR,
5288 PV_PULSAR,
5289 PV_POWER4,
5290 PV_ICESTAR,
5291 PV_SSTAR,
5292 PV_POWER4p,
5293 PV_630,
5294 PV_630p
5295 };
5296
5297 /**
5298 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5299 * @ioa_cfg: ioa cfg struct
5300 *
5301 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5302 * certain pSeries hardware. This function determines if the given
5303 * adapter is in one of these confgurations or not.
5304 *
5305 * Return value:
5306 * 1 if adapter is not supported / 0 if adapter is supported
5307 **/
5308 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5309 {
5310 int i;
5311
5312 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
5313 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5314 if (__is_processor(ipr_blocked_processors[i]))
5315 return 1;
5316 }
5317 }
5318 return 0;
5319 }
5320 #else
5321 #define ipr_invalid_adapter(ioa_cfg) 0
5322 #endif
5323
5324 /**
5325 * ipr_ioa_bringdown_done - IOA bring down completion.
5326 * @ipr_cmd: ipr command struct
5327 *
5328 * This function processes the completion of an adapter bring down.
5329 * It wakes any reset sleepers.
5330 *
5331 * Return value:
5332 * IPR_RC_JOB_RETURN
5333 **/
5334 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5335 {
5336 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5337
5338 ENTER;
5339 ioa_cfg->in_reset_reload = 0;
5340 ioa_cfg->reset_retries = 0;
5341 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5342 wake_up_all(&ioa_cfg->reset_wait_q);
5343
5344 spin_unlock_irq(ioa_cfg->host->host_lock);
5345 scsi_unblock_requests(ioa_cfg->host);
5346 spin_lock_irq(ioa_cfg->host->host_lock);
5347 LEAVE;
5348
5349 return IPR_RC_JOB_RETURN;
5350 }
5351
5352 /**
5353 * ipr_ioa_reset_done - IOA reset completion.
5354 * @ipr_cmd: ipr command struct
5355 *
5356 * This function processes the completion of an adapter reset.
5357 * It schedules any necessary mid-layer add/removes and
5358 * wakes any reset sleepers.
5359 *
5360 * Return value:
5361 * IPR_RC_JOB_RETURN
5362 **/
5363 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5364 {
5365 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5366 struct ipr_resource_entry *res;
5367 struct ipr_hostrcb *hostrcb, *temp;
5368 int i = 0;
5369
5370 ENTER;
5371 ioa_cfg->in_reset_reload = 0;
5372 ioa_cfg->allow_cmds = 1;
5373 ioa_cfg->reset_cmd = NULL;
5374 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
5375
5376 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5377 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5378 ipr_trace;
5379 break;
5380 }
5381 }
5382 schedule_work(&ioa_cfg->work_q);
5383
5384 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5385 list_del(&hostrcb->queue);
5386 if (i++ < IPR_NUM_LOG_HCAMS)
5387 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5388 else
5389 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5390 }
5391
5392 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
5393 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5394
5395 ioa_cfg->reset_retries = 0;
5396 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5397 wake_up_all(&ioa_cfg->reset_wait_q);
5398
5399 spin_unlock(ioa_cfg->host->host_lock);
5400 scsi_unblock_requests(ioa_cfg->host);
5401 spin_lock(ioa_cfg->host->host_lock);
5402
5403 if (!ioa_cfg->allow_cmds)
5404 scsi_block_requests(ioa_cfg->host);
5405
5406 LEAVE;
5407 return IPR_RC_JOB_RETURN;
5408 }
5409
5410 /**
5411 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5412 * @supported_dev: supported device struct
5413 * @vpids: vendor product id struct
5414 *
5415 * Return value:
5416 * none
5417 **/
5418 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5419 struct ipr_std_inq_vpids *vpids)
5420 {
5421 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5422 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5423 supported_dev->num_records = 1;
5424 supported_dev->data_length =
5425 cpu_to_be16(sizeof(struct ipr_supported_device));
5426 supported_dev->reserved = 0;
5427 }
5428
5429 /**
5430 * ipr_set_supported_devs - Send Set Supported Devices for a device
5431 * @ipr_cmd: ipr command struct
5432 *
5433 * This function send a Set Supported Devices to the adapter
5434 *
5435 * Return value:
5436 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5437 **/
5438 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5439 {
5440 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5441 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5442 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5443 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5444 struct ipr_resource_entry *res = ipr_cmd->u.res;
5445
5446 ipr_cmd->job_step = ipr_ioa_reset_done;
5447
5448 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
5449 if (!ipr_is_scsi_disk(res))
5450 continue;
5451
5452 ipr_cmd->u.res = res;
5453 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5454
5455 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5456 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5457 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5458
5459 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5460 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5461 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5462
5463 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5464 sizeof(struct ipr_supported_device));
5465 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5466 offsetof(struct ipr_misc_cbs, supp_dev));
5467 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5468 ioarcb->write_data_transfer_length =
5469 cpu_to_be32(sizeof(struct ipr_supported_device));
5470
5471 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5472 IPR_SET_SUP_DEVICE_TIMEOUT);
5473
5474 ipr_cmd->job_step = ipr_set_supported_devs;
5475 return IPR_RC_JOB_RETURN;
5476 }
5477
5478 return IPR_RC_JOB_CONTINUE;
5479 }
5480
5481 /**
5482 * ipr_setup_write_cache - Disable write cache if needed
5483 * @ipr_cmd: ipr command struct
5484 *
5485 * This function sets up adapters write cache to desired setting
5486 *
5487 * Return value:
5488 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5489 **/
5490 static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5491 {
5492 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5493
5494 ipr_cmd->job_step = ipr_set_supported_devs;
5495 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5496 struct ipr_resource_entry, queue);
5497
5498 if (ioa_cfg->cache_state != CACHE_DISABLED)
5499 return IPR_RC_JOB_CONTINUE;
5500
5501 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5502 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5503 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5504 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5505
5506 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5507
5508 return IPR_RC_JOB_RETURN;
5509 }
5510
5511 /**
5512 * ipr_get_mode_page - Locate specified mode page
5513 * @mode_pages: mode page buffer
5514 * @page_code: page code to find
5515 * @len: minimum required length for mode page
5516 *
5517 * Return value:
5518 * pointer to mode page / NULL on failure
5519 **/
5520 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5521 u32 page_code, u32 len)
5522 {
5523 struct ipr_mode_page_hdr *mode_hdr;
5524 u32 page_length;
5525 u32 length;
5526
5527 if (!mode_pages || (mode_pages->hdr.length == 0))
5528 return NULL;
5529
5530 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5531 mode_hdr = (struct ipr_mode_page_hdr *)
5532 (mode_pages->data + mode_pages->hdr.block_desc_len);
5533
5534 while (length) {
5535 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5536 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5537 return mode_hdr;
5538 break;
5539 } else {
5540 page_length = (sizeof(struct ipr_mode_page_hdr) +
5541 mode_hdr->page_length);
5542 length -= page_length;
5543 mode_hdr = (struct ipr_mode_page_hdr *)
5544 ((unsigned long)mode_hdr + page_length);
5545 }
5546 }
5547 return NULL;
5548 }
5549
5550 /**
5551 * ipr_check_term_power - Check for term power errors
5552 * @ioa_cfg: ioa config struct
5553 * @mode_pages: IOAFP mode pages buffer
5554 *
5555 * Check the IOAFP's mode page 28 for term power errors
5556 *
5557 * Return value:
5558 * nothing
5559 **/
5560 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5561 struct ipr_mode_pages *mode_pages)
5562 {
5563 int i;
5564 int entry_length;
5565 struct ipr_dev_bus_entry *bus;
5566 struct ipr_mode_page28 *mode_page;
5567
5568 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5569 sizeof(struct ipr_mode_page28));
5570
5571 entry_length = mode_page->entry_length;
5572
5573 bus = mode_page->bus;
5574
5575 for (i = 0; i < mode_page->num_entries; i++) {
5576 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5577 dev_err(&ioa_cfg->pdev->dev,
5578 "Term power is absent on scsi bus %d\n",
5579 bus->res_addr.bus);
5580 }
5581
5582 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5583 }
5584 }
5585
5586 /**
5587 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5588 * @ioa_cfg: ioa config struct
5589 *
5590 * Looks through the config table checking for SES devices. If
5591 * the SES device is in the SES table indicating a maximum SCSI
5592 * bus speed, the speed is limited for the bus.
5593 *
5594 * Return value:
5595 * none
5596 **/
5597 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5598 {
5599 u32 max_xfer_rate;
5600 int i;
5601
5602 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5603 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5604 ioa_cfg->bus_attr[i].bus_width);
5605
5606 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5607 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5608 }
5609 }
5610
5611 /**
5612 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5613 * @ioa_cfg: ioa config struct
5614 * @mode_pages: mode page 28 buffer
5615 *
5616 * Updates mode page 28 based on driver configuration
5617 *
5618 * Return value:
5619 * none
5620 **/
5621 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5622 struct ipr_mode_pages *mode_pages)
5623 {
5624 int i, entry_length;
5625 struct ipr_dev_bus_entry *bus;
5626 struct ipr_bus_attributes *bus_attr;
5627 struct ipr_mode_page28 *mode_page;
5628
5629 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5630 sizeof(struct ipr_mode_page28));
5631
5632 entry_length = mode_page->entry_length;
5633
5634 /* Loop for each device bus entry */
5635 for (i = 0, bus = mode_page->bus;
5636 i < mode_page->num_entries;
5637 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5638 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5639 dev_err(&ioa_cfg->pdev->dev,
5640 "Invalid resource address reported: 0x%08X\n",
5641 IPR_GET_PHYS_LOC(bus->res_addr));
5642 continue;
5643 }
5644
5645 bus_attr = &ioa_cfg->bus_attr[i];
5646 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5647 bus->bus_width = bus_attr->bus_width;
5648 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5649 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5650 if (bus_attr->qas_enabled)
5651 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5652 else
5653 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5654 }
5655 }
5656
5657 /**
5658 * ipr_build_mode_select - Build a mode select command
5659 * @ipr_cmd: ipr command struct
5660 * @res_handle: resource handle to send command to
5661 * @parm: Byte 2 of Mode Sense command
5662 * @dma_addr: DMA buffer address
5663 * @xfer_len: data transfer length
5664 *
5665 * Return value:
5666 * none
5667 **/
5668 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5669 __be32 res_handle, u8 parm, u32 dma_addr,
5670 u8 xfer_len)
5671 {
5672 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5673 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5674
5675 ioarcb->res_handle = res_handle;
5676 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5677 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5678 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5679 ioarcb->cmd_pkt.cdb[1] = parm;
5680 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5681
5682 ioadl->flags_and_data_len =
5683 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5684 ioadl->address = cpu_to_be32(dma_addr);
5685 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5686 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5687 }
5688
5689 /**
5690 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5691 * @ipr_cmd: ipr command struct
5692 *
5693 * This function sets up the SCSI bus attributes and sends
5694 * a Mode Select for Page 28 to activate them.
5695 *
5696 * Return value:
5697 * IPR_RC_JOB_RETURN
5698 **/
5699 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5700 {
5701 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5702 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5703 int length;
5704
5705 ENTER;
5706 ipr_scsi_bus_speed_limit(ioa_cfg);
5707 ipr_check_term_power(ioa_cfg, mode_pages);
5708 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5709 length = mode_pages->hdr.length + 1;
5710 mode_pages->hdr.length = 0;
5711
5712 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5713 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5714 length);
5715
5716 ipr_cmd->job_step = ipr_setup_write_cache;
5717 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5718
5719 LEAVE;
5720 return IPR_RC_JOB_RETURN;
5721 }
5722
5723 /**
5724 * ipr_build_mode_sense - Builds a mode sense command
5725 * @ipr_cmd: ipr command struct
5726 * @res: resource entry struct
5727 * @parm: Byte 2 of mode sense command
5728 * @dma_addr: DMA address of mode sense buffer
5729 * @xfer_len: Size of DMA buffer
5730 *
5731 * Return value:
5732 * none
5733 **/
5734 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5735 __be32 res_handle,
5736 u8 parm, u32 dma_addr, u8 xfer_len)
5737 {
5738 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5739 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5740
5741 ioarcb->res_handle = res_handle;
5742 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5743 ioarcb->cmd_pkt.cdb[2] = parm;
5744 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5745 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5746
5747 ioadl->flags_and_data_len =
5748 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5749 ioadl->address = cpu_to_be32(dma_addr);
5750 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5751 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5752 }
5753
5754 /**
5755 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5756 * @ipr_cmd: ipr command struct
5757 *
5758 * This function handles the failure of an IOA bringup command.
5759 *
5760 * Return value:
5761 * IPR_RC_JOB_RETURN
5762 **/
5763 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5764 {
5765 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5766 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5767
5768 dev_err(&ioa_cfg->pdev->dev,
5769 "0x%02X failed with IOASC: 0x%08X\n",
5770 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5771
5772 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5773 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5774 return IPR_RC_JOB_RETURN;
5775 }
5776
5777 /**
5778 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5779 * @ipr_cmd: ipr command struct
5780 *
5781 * This function handles the failure of a Mode Sense to the IOAFP.
5782 * Some adapters do not handle all mode pages.
5783 *
5784 * Return value:
5785 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5786 **/
5787 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5788 {
5789 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5790
5791 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5792 ipr_cmd->job_step = ipr_setup_write_cache;
5793 return IPR_RC_JOB_CONTINUE;
5794 }
5795
5796 return ipr_reset_cmd_failed(ipr_cmd);
5797 }
5798
5799 /**
5800 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5801 * @ipr_cmd: ipr command struct
5802 *
5803 * This function send a Page 28 mode sense to the IOA to
5804 * retrieve SCSI bus attributes.
5805 *
5806 * Return value:
5807 * IPR_RC_JOB_RETURN
5808 **/
5809 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5810 {
5811 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5812
5813 ENTER;
5814 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5815 0x28, ioa_cfg->vpd_cbs_dma +
5816 offsetof(struct ipr_misc_cbs, mode_pages),
5817 sizeof(struct ipr_mode_pages));
5818
5819 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
5820 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
5821
5822 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5823
5824 LEAVE;
5825 return IPR_RC_JOB_RETURN;
5826 }
5827
5828 /**
5829 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
5830 * @ipr_cmd: ipr command struct
5831 *
5832 * This function enables dual IOA RAID support if possible.
5833 *
5834 * Return value:
5835 * IPR_RC_JOB_RETURN
5836 **/
5837 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
5838 {
5839 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5840 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5841 struct ipr_mode_page24 *mode_page;
5842 int length;
5843
5844 ENTER;
5845 mode_page = ipr_get_mode_page(mode_pages, 0x24,
5846 sizeof(struct ipr_mode_page24));
5847
5848 if (mode_page)
5849 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
5850
5851 length = mode_pages->hdr.length + 1;
5852 mode_pages->hdr.length = 0;
5853
5854 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5855 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5856 length);
5857
5858 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5859 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5860
5861 LEAVE;
5862 return IPR_RC_JOB_RETURN;
5863 }
5864
5865 /**
5866 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
5867 * @ipr_cmd: ipr command struct
5868 *
5869 * This function handles the failure of a Mode Sense to the IOAFP.
5870 * Some adapters do not handle all mode pages.
5871 *
5872 * Return value:
5873 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5874 **/
5875 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
5876 {
5877 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5878
5879 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5880 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5881 return IPR_RC_JOB_CONTINUE;
5882 }
5883
5884 return ipr_reset_cmd_failed(ipr_cmd);
5885 }
5886
5887 /**
5888 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
5889 * @ipr_cmd: ipr command struct
5890 *
5891 * This function send a mode sense to the IOA to retrieve
5892 * the IOA Advanced Function Control mode page.
5893 *
5894 * Return value:
5895 * IPR_RC_JOB_RETURN
5896 **/
5897 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
5898 {
5899 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5900
5901 ENTER;
5902 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5903 0x24, ioa_cfg->vpd_cbs_dma +
5904 offsetof(struct ipr_misc_cbs, mode_pages),
5905 sizeof(struct ipr_mode_pages));
5906
5907 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
5908 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
5909
5910 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5911
5912 LEAVE;
5913 return IPR_RC_JOB_RETURN;
5914 }
5915
5916 /**
5917 * ipr_init_res_table - Initialize the resource table
5918 * @ipr_cmd: ipr command struct
5919 *
5920 * This function looks through the existing resource table, comparing
5921 * it with the config table. This function will take care of old/new
5922 * devices and schedule adding/removing them from the mid-layer
5923 * as appropriate.
5924 *
5925 * Return value:
5926 * IPR_RC_JOB_CONTINUE
5927 **/
5928 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5929 {
5930 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5931 struct ipr_resource_entry *res, *temp;
5932 struct ipr_config_table_entry *cfgte;
5933 int found, i;
5934 LIST_HEAD(old_res);
5935
5936 ENTER;
5937 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5938 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5939
5940 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5941 list_move_tail(&res->queue, &old_res);
5942
5943 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5944 cfgte = &ioa_cfg->cfg_table->dev[i];
5945 found = 0;
5946
5947 list_for_each_entry_safe(res, temp, &old_res, queue) {
5948 if (!memcmp(&res->cfgte.res_addr,
5949 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5950 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5951 found = 1;
5952 break;
5953 }
5954 }
5955
5956 if (!found) {
5957 if (list_empty(&ioa_cfg->free_res_q)) {
5958 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5959 break;
5960 }
5961
5962 found = 1;
5963 res = list_entry(ioa_cfg->free_res_q.next,
5964 struct ipr_resource_entry, queue);
5965 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5966 ipr_init_res_entry(res);
5967 res->add_to_ml = 1;
5968 }
5969
5970 if (found)
5971 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5972 }
5973
5974 list_for_each_entry_safe(res, temp, &old_res, queue) {
5975 if (res->sdev) {
5976 res->del_from_ml = 1;
5977 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
5978 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5979 } else {
5980 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5981 }
5982 }
5983
5984 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
5985 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
5986 else
5987 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5988
5989 LEAVE;
5990 return IPR_RC_JOB_CONTINUE;
5991 }
5992
5993 /**
5994 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
5995 * @ipr_cmd: ipr command struct
5996 *
5997 * This function sends a Query IOA Configuration command
5998 * to the adapter to retrieve the IOA configuration table.
5999 *
6000 * Return value:
6001 * IPR_RC_JOB_RETURN
6002 **/
6003 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6004 {
6005 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6006 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6007 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6008 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
6009 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6010
6011 ENTER;
6012 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6013 ioa_cfg->dual_raid = 1;
6014 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6015 ucode_vpd->major_release, ucode_vpd->card_type,
6016 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6017 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6018 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6019
6020 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
6021 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
6022 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
6023
6024 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6025 ioarcb->read_data_transfer_length =
6026 cpu_to_be32(sizeof(struct ipr_config_table));
6027
6028 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
6029 ioadl->flags_and_data_len =
6030 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
6031
6032 ipr_cmd->job_step = ipr_init_res_table;
6033
6034 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6035
6036 LEAVE;
6037 return IPR_RC_JOB_RETURN;
6038 }
6039
6040 /**
6041 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6042 * @ipr_cmd: ipr command struct
6043 *
6044 * This utility function sends an inquiry to the adapter.
6045 *
6046 * Return value:
6047 * none
6048 **/
6049 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
6050 u32 dma_addr, u8 xfer_len)
6051 {
6052 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6053 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6054
6055 ENTER;
6056 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6057 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6058
6059 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6060 ioarcb->cmd_pkt.cdb[1] = flags;
6061 ioarcb->cmd_pkt.cdb[2] = page;
6062 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6063
6064 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6065 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
6066
6067 ioadl->address = cpu_to_be32(dma_addr);
6068 ioadl->flags_and_data_len =
6069 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
6070
6071 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6072 LEAVE;
6073 }
6074
6075 /**
6076 * ipr_inquiry_page_supported - Is the given inquiry page supported
6077 * @page0: inquiry page 0 buffer
6078 * @page: page code.
6079 *
6080 * This function determines if the specified inquiry page is supported.
6081 *
6082 * Return value:
6083 * 1 if page is supported / 0 if not
6084 **/
6085 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
6086 {
6087 int i;
6088
6089 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
6090 if (page0->page[i] == page)
6091 return 1;
6092
6093 return 0;
6094 }
6095
6096 /**
6097 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
6098 * @ipr_cmd: ipr command struct
6099 *
6100 * This function sends a Page 0xD0 inquiry to the adapter
6101 * to retrieve adapter capabilities.
6102 *
6103 * Return value:
6104 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6105 **/
6106 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
6107 {
6108 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6109 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6110 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6111
6112 ENTER;
6113 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
6114 memset(cap, 0, sizeof(*cap));
6115
6116 if (ipr_inquiry_page_supported(page0, 0xD0)) {
6117 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
6118 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
6119 sizeof(struct ipr_inquiry_cap));
6120 return IPR_RC_JOB_RETURN;
6121 }
6122
6123 LEAVE;
6124 return IPR_RC_JOB_CONTINUE;
6125 }
6126
6127 /**
6128 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
6129 * @ipr_cmd: ipr command struct
6130 *
6131 * This function sends a Page 3 inquiry to the adapter
6132 * to retrieve software VPD information.
6133 *
6134 * Return value:
6135 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6136 **/
6137 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
6138 {
6139 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6140 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6141
6142 ENTER;
6143
6144 if (!ipr_inquiry_page_supported(page0, 1))
6145 ioa_cfg->cache_state = CACHE_NONE;
6146
6147 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
6148
6149 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
6150 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
6151 sizeof(struct ipr_inquiry_page3));
6152
6153 LEAVE;
6154 return IPR_RC_JOB_RETURN;
6155 }
6156
6157 /**
6158 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
6159 * @ipr_cmd: ipr command struct
6160 *
6161 * This function sends a Page 0 inquiry to the adapter
6162 * to retrieve supported inquiry pages.
6163 *
6164 * Return value:
6165 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6166 **/
6167 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
6168 {
6169 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6170 char type[5];
6171
6172 ENTER;
6173
6174 /* Grab the type out of the VPD and store it away */
6175 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
6176 type[4] = '\0';
6177 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6178
6179 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
6180
6181 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6182 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6183 sizeof(struct ipr_inquiry_page0));
6184
6185 LEAVE;
6186 return IPR_RC_JOB_RETURN;
6187 }
6188
6189 /**
6190 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6191 * @ipr_cmd: ipr command struct
6192 *
6193 * This function sends a standard inquiry to the adapter.
6194 *
6195 * Return value:
6196 * IPR_RC_JOB_RETURN
6197 **/
6198 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6199 {
6200 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6201
6202 ENTER;
6203 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
6204
6205 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6206 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6207 sizeof(struct ipr_ioa_vpd));
6208
6209 LEAVE;
6210 return IPR_RC_JOB_RETURN;
6211 }
6212
6213 /**
6214 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6215 * @ipr_cmd: ipr command struct
6216 *
6217 * This function send an Identify Host Request Response Queue
6218 * command to establish the HRRQ with the adapter.
6219 *
6220 * Return value:
6221 * IPR_RC_JOB_RETURN
6222 **/
6223 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6224 {
6225 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6226 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6227
6228 ENTER;
6229 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6230
6231 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6232 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6233
6234 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6235 ioarcb->cmd_pkt.cdb[2] =
6236 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6237 ioarcb->cmd_pkt.cdb[3] =
6238 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6239 ioarcb->cmd_pkt.cdb[4] =
6240 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6241 ioarcb->cmd_pkt.cdb[5] =
6242 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6243 ioarcb->cmd_pkt.cdb[7] =
6244 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6245 ioarcb->cmd_pkt.cdb[8] =
6246 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6247
6248 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6249
6250 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6251
6252 LEAVE;
6253 return IPR_RC_JOB_RETURN;
6254 }
6255
6256 /**
6257 * ipr_reset_timer_done - Adapter reset timer function
6258 * @ipr_cmd: ipr command struct
6259 *
6260 * Description: This function is used in adapter reset processing
6261 * for timing events. If the reset_cmd pointer in the IOA
6262 * config struct is not this adapter's we are doing nested
6263 * resets and fail_all_ops will take care of freeing the
6264 * command block.
6265 *
6266 * Return value:
6267 * none
6268 **/
6269 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6270 {
6271 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6272 unsigned long lock_flags = 0;
6273
6274 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6275
6276 if (ioa_cfg->reset_cmd == ipr_cmd) {
6277 list_del(&ipr_cmd->queue);
6278 ipr_cmd->done(ipr_cmd);
6279 }
6280
6281 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6282 }
6283
6284 /**
6285 * ipr_reset_start_timer - Start a timer for adapter reset job
6286 * @ipr_cmd: ipr command struct
6287 * @timeout: timeout value
6288 *
6289 * Description: This function is used in adapter reset processing
6290 * for timing events. If the reset_cmd pointer in the IOA
6291 * config struct is not this adapter's we are doing nested
6292 * resets and fail_all_ops will take care of freeing the
6293 * command block.
6294 *
6295 * Return value:
6296 * none
6297 **/
6298 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6299 unsigned long timeout)
6300 {
6301 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6302 ipr_cmd->done = ipr_reset_ioa_job;
6303
6304 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6305 ipr_cmd->timer.expires = jiffies + timeout;
6306 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6307 add_timer(&ipr_cmd->timer);
6308 }
6309
6310 /**
6311 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6312 * @ioa_cfg: ioa cfg struct
6313 *
6314 * Return value:
6315 * nothing
6316 **/
6317 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6318 {
6319 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6320
6321 /* Initialize Host RRQ pointers */
6322 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6323 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6324 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6325 ioa_cfg->toggle_bit = 1;
6326
6327 /* Zero out config table */
6328 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6329 }
6330
6331 /**
6332 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6333 * @ipr_cmd: ipr command struct
6334 *
6335 * This function reinitializes some control blocks and
6336 * enables destructive diagnostics on the adapter.
6337 *
6338 * Return value:
6339 * IPR_RC_JOB_RETURN
6340 **/
6341 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6342 {
6343 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6344 volatile u32 int_reg;
6345
6346 ENTER;
6347 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6348 ipr_init_ioa_mem(ioa_cfg);
6349
6350 ioa_cfg->allow_interrupts = 1;
6351 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6352
6353 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6354 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6355 ioa_cfg->regs.clr_interrupt_mask_reg);
6356 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6357 return IPR_RC_JOB_CONTINUE;
6358 }
6359
6360 /* Enable destructive diagnostics on IOA */
6361 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
6362
6363 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6364 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6365
6366 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6367
6368 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6369 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
6370 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6371 ipr_cmd->done = ipr_reset_ioa_job;
6372 add_timer(&ipr_cmd->timer);
6373 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6374
6375 LEAVE;
6376 return IPR_RC_JOB_RETURN;
6377 }
6378
6379 /**
6380 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6381 * @ipr_cmd: ipr command struct
6382 *
6383 * This function is invoked when an adapter dump has run out
6384 * of processing time.
6385 *
6386 * Return value:
6387 * IPR_RC_JOB_CONTINUE
6388 **/
6389 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6390 {
6391 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6392
6393 if (ioa_cfg->sdt_state == GET_DUMP)
6394 ioa_cfg->sdt_state = ABORT_DUMP;
6395
6396 ipr_cmd->job_step = ipr_reset_alert;
6397
6398 return IPR_RC_JOB_CONTINUE;
6399 }
6400
6401 /**
6402 * ipr_unit_check_no_data - Log a unit check/no data error log
6403 * @ioa_cfg: ioa config struct
6404 *
6405 * Logs an error indicating the adapter unit checked, but for some
6406 * reason, we were unable to fetch the unit check buffer.
6407 *
6408 * Return value:
6409 * nothing
6410 **/
6411 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6412 {
6413 ioa_cfg->errors_logged++;
6414 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6415 }
6416
6417 /**
6418 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6419 * @ioa_cfg: ioa config struct
6420 *
6421 * Fetches the unit check buffer from the adapter by clocking the data
6422 * through the mailbox register.
6423 *
6424 * Return value:
6425 * nothing
6426 **/
6427 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6428 {
6429 unsigned long mailbox;
6430 struct ipr_hostrcb *hostrcb;
6431 struct ipr_uc_sdt sdt;
6432 int rc, length;
6433 u32 ioasc;
6434
6435 mailbox = readl(ioa_cfg->ioa_mailbox);
6436
6437 if (!ipr_sdt_is_fmt2(mailbox)) {
6438 ipr_unit_check_no_data(ioa_cfg);
6439 return;
6440 }
6441
6442 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6443 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6444 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6445
6446 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6447 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6448 ipr_unit_check_no_data(ioa_cfg);
6449 return;
6450 }
6451
6452 /* Find length of the first sdt entry (UC buffer) */
6453 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6454 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6455
6456 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6457 struct ipr_hostrcb, queue);
6458 list_del(&hostrcb->queue);
6459 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6460
6461 rc = ipr_get_ldump_data_section(ioa_cfg,
6462 be32_to_cpu(sdt.entry[0].bar_str_offset),
6463 (__be32 *)&hostrcb->hcam,
6464 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6465
6466 if (!rc) {
6467 ipr_handle_log_data(ioa_cfg, hostrcb);
6468 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
6469 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
6470 ioa_cfg->sdt_state == GET_DUMP)
6471 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
6472 } else
6473 ipr_unit_check_no_data(ioa_cfg);
6474
6475 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6476 }
6477
6478 /**
6479 * ipr_reset_restore_cfg_space - Restore PCI config space.
6480 * @ipr_cmd: ipr command struct
6481 *
6482 * Description: This function restores the saved PCI config space of
6483 * the adapter, fails all outstanding ops back to the callers, and
6484 * fetches the dump/unit check if applicable to this reset.
6485 *
6486 * Return value:
6487 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6488 **/
6489 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6490 {
6491 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6492 int rc;
6493
6494 ENTER;
6495 rc = pci_restore_state(ioa_cfg->pdev);
6496
6497 if (rc != PCIBIOS_SUCCESSFUL) {
6498 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6499 return IPR_RC_JOB_CONTINUE;
6500 }
6501
6502 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6503 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6504 return IPR_RC_JOB_CONTINUE;
6505 }
6506
6507 ipr_fail_all_ops(ioa_cfg);
6508
6509 if (ioa_cfg->ioa_unit_checked) {
6510 ioa_cfg->ioa_unit_checked = 0;
6511 ipr_get_unit_check_buffer(ioa_cfg);
6512 ipr_cmd->job_step = ipr_reset_alert;
6513 ipr_reset_start_timer(ipr_cmd, 0);
6514 return IPR_RC_JOB_RETURN;
6515 }
6516
6517 if (ioa_cfg->in_ioa_bringdown) {
6518 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6519 } else {
6520 ipr_cmd->job_step = ipr_reset_enable_ioa;
6521
6522 if (GET_DUMP == ioa_cfg->sdt_state) {
6523 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6524 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6525 schedule_work(&ioa_cfg->work_q);
6526 return IPR_RC_JOB_RETURN;
6527 }
6528 }
6529
6530 ENTER;
6531 return IPR_RC_JOB_CONTINUE;
6532 }
6533
6534 /**
6535 * ipr_reset_bist_done - BIST has completed on the adapter.
6536 * @ipr_cmd: ipr command struct
6537 *
6538 * Description: Unblock config space and resume the reset process.
6539 *
6540 * Return value:
6541 * IPR_RC_JOB_CONTINUE
6542 **/
6543 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6544 {
6545 ENTER;
6546 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6547 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6548 LEAVE;
6549 return IPR_RC_JOB_CONTINUE;
6550 }
6551
6552 /**
6553 * ipr_reset_start_bist - Run BIST on the adapter.
6554 * @ipr_cmd: ipr command struct
6555 *
6556 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6557 *
6558 * Return value:
6559 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6560 **/
6561 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6562 {
6563 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6564 int rc;
6565
6566 ENTER;
6567 pci_block_user_cfg_access(ioa_cfg->pdev);
6568 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6569
6570 if (rc != PCIBIOS_SUCCESSFUL) {
6571 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6572 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6573 rc = IPR_RC_JOB_CONTINUE;
6574 } else {
6575 ipr_cmd->job_step = ipr_reset_bist_done;
6576 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6577 rc = IPR_RC_JOB_RETURN;
6578 }
6579
6580 LEAVE;
6581 return rc;
6582 }
6583
6584 /**
6585 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
6586 * @ipr_cmd: ipr command struct
6587 *
6588 * Description: This clears PCI reset to the adapter and delays two seconds.
6589 *
6590 * Return value:
6591 * IPR_RC_JOB_RETURN
6592 **/
6593 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
6594 {
6595 ENTER;
6596 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
6597 ipr_cmd->job_step = ipr_reset_bist_done;
6598 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6599 LEAVE;
6600 return IPR_RC_JOB_RETURN;
6601 }
6602
6603 /**
6604 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
6605 * @ipr_cmd: ipr command struct
6606 *
6607 * Description: This asserts PCI reset to the adapter.
6608 *
6609 * Return value:
6610 * IPR_RC_JOB_RETURN
6611 **/
6612 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
6613 {
6614 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6615 struct pci_dev *pdev = ioa_cfg->pdev;
6616
6617 ENTER;
6618 pci_block_user_cfg_access(pdev);
6619 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
6620 ipr_cmd->job_step = ipr_reset_slot_reset_done;
6621 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
6622 LEAVE;
6623 return IPR_RC_JOB_RETURN;
6624 }
6625
6626 /**
6627 * ipr_reset_allowed - Query whether or not IOA can be reset
6628 * @ioa_cfg: ioa config struct
6629 *
6630 * Return value:
6631 * 0 if reset not allowed / non-zero if reset is allowed
6632 **/
6633 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6634 {
6635 volatile u32 temp_reg;
6636
6637 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6638 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6639 }
6640
6641 /**
6642 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6643 * @ipr_cmd: ipr command struct
6644 *
6645 * Description: This function waits for adapter permission to run BIST,
6646 * then runs BIST. If the adapter does not give permission after a
6647 * reasonable time, we will reset the adapter anyway. The impact of
6648 * resetting the adapter without warning the adapter is the risk of
6649 * losing the persistent error log on the adapter. If the adapter is
6650 * reset while it is writing to the flash on the adapter, the flash
6651 * segment will have bad ECC and be zeroed.
6652 *
6653 * Return value:
6654 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6655 **/
6656 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6657 {
6658 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6659 int rc = IPR_RC_JOB_RETURN;
6660
6661 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6662 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6663 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6664 } else {
6665 ipr_cmd->job_step = ioa_cfg->reset;
6666 rc = IPR_RC_JOB_CONTINUE;
6667 }
6668
6669 return rc;
6670 }
6671
6672 /**
6673 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6674 * @ipr_cmd: ipr command struct
6675 *
6676 * Description: This function alerts the adapter that it will be reset.
6677 * If memory space is not currently enabled, proceed directly
6678 * to running BIST on the adapter. The timer must always be started
6679 * so we guarantee we do not run BIST from ipr_isr.
6680 *
6681 * Return value:
6682 * IPR_RC_JOB_RETURN
6683 **/
6684 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6685 {
6686 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6687 u16 cmd_reg;
6688 int rc;
6689
6690 ENTER;
6691 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6692
6693 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6694 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6695 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6696 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6697 } else {
6698 ipr_cmd->job_step = ioa_cfg->reset;
6699 }
6700
6701 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6702 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6703
6704 LEAVE;
6705 return IPR_RC_JOB_RETURN;
6706 }
6707
6708 /**
6709 * ipr_reset_ucode_download_done - Microcode download completion
6710 * @ipr_cmd: ipr command struct
6711 *
6712 * Description: This function unmaps the microcode download buffer.
6713 *
6714 * Return value:
6715 * IPR_RC_JOB_CONTINUE
6716 **/
6717 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6718 {
6719 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6720 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6721
6722 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6723 sglist->num_sg, DMA_TO_DEVICE);
6724
6725 ipr_cmd->job_step = ipr_reset_alert;
6726 return IPR_RC_JOB_CONTINUE;
6727 }
6728
6729 /**
6730 * ipr_reset_ucode_download - Download microcode to the adapter
6731 * @ipr_cmd: ipr command struct
6732 *
6733 * Description: This function checks to see if it there is microcode
6734 * to download to the adapter. If there is, a download is performed.
6735 *
6736 * Return value:
6737 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6738 **/
6739 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6740 {
6741 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6742 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6743
6744 ENTER;
6745 ipr_cmd->job_step = ipr_reset_alert;
6746
6747 if (!sglist)
6748 return IPR_RC_JOB_CONTINUE;
6749
6750 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6751 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6752 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6753 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6754 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6755 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6756 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6757
6758 ipr_build_ucode_ioadl(ipr_cmd, sglist);
6759 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6760
6761 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6762 IPR_WRITE_BUFFER_TIMEOUT);
6763
6764 LEAVE;
6765 return IPR_RC_JOB_RETURN;
6766 }
6767
6768 /**
6769 * ipr_reset_shutdown_ioa - Shutdown the adapter
6770 * @ipr_cmd: ipr command struct
6771 *
6772 * Description: This function issues an adapter shutdown of the
6773 * specified type to the specified adapter as part of the
6774 * adapter reset job.
6775 *
6776 * Return value:
6777 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6778 **/
6779 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6780 {
6781 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6782 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6783 unsigned long timeout;
6784 int rc = IPR_RC_JOB_CONTINUE;
6785
6786 ENTER;
6787 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6788 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6789 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6790 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6791 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6792
6793 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
6794 timeout = IPR_SHUTDOWN_TIMEOUT;
6795 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6796 timeout = IPR_INTERNAL_TIMEOUT;
6797 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6798 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
6799 else
6800 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
6801
6802 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6803
6804 rc = IPR_RC_JOB_RETURN;
6805 ipr_cmd->job_step = ipr_reset_ucode_download;
6806 } else
6807 ipr_cmd->job_step = ipr_reset_alert;
6808
6809 LEAVE;
6810 return rc;
6811 }
6812
6813 /**
6814 * ipr_reset_ioa_job - Adapter reset job
6815 * @ipr_cmd: ipr command struct
6816 *
6817 * Description: This function is the job router for the adapter reset job.
6818 *
6819 * Return value:
6820 * none
6821 **/
6822 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6823 {
6824 u32 rc, ioasc;
6825 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6826
6827 do {
6828 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6829
6830 if (ioa_cfg->reset_cmd != ipr_cmd) {
6831 /*
6832 * We are doing nested adapter resets and this is
6833 * not the current reset job.
6834 */
6835 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6836 return;
6837 }
6838
6839 if (IPR_IOASC_SENSE_KEY(ioasc)) {
6840 rc = ipr_cmd->job_step_failed(ipr_cmd);
6841 if (rc == IPR_RC_JOB_RETURN)
6842 return;
6843 }
6844
6845 ipr_reinit_ipr_cmnd(ipr_cmd);
6846 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
6847 rc = ipr_cmd->job_step(ipr_cmd);
6848 } while(rc == IPR_RC_JOB_CONTINUE);
6849 }
6850
6851 /**
6852 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6853 * @ioa_cfg: ioa config struct
6854 * @job_step: first job step of reset job
6855 * @shutdown_type: shutdown type
6856 *
6857 * Description: This function will initiate the reset of the given adapter
6858 * starting at the selected job step.
6859 * If the caller needs to wait on the completion of the reset,
6860 * the caller must sleep on the reset_wait_q.
6861 *
6862 * Return value:
6863 * none
6864 **/
6865 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6866 int (*job_step) (struct ipr_cmnd *),
6867 enum ipr_shutdown_type shutdown_type)
6868 {
6869 struct ipr_cmnd *ipr_cmd;
6870
6871 ioa_cfg->in_reset_reload = 1;
6872 ioa_cfg->allow_cmds = 0;
6873 scsi_block_requests(ioa_cfg->host);
6874
6875 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6876 ioa_cfg->reset_cmd = ipr_cmd;
6877 ipr_cmd->job_step = job_step;
6878 ipr_cmd->u.shutdown_type = shutdown_type;
6879
6880 ipr_reset_ioa_job(ipr_cmd);
6881 }
6882
6883 /**
6884 * ipr_initiate_ioa_reset - Initiate an adapter reset
6885 * @ioa_cfg: ioa config struct
6886 * @shutdown_type: shutdown type
6887 *
6888 * Description: This function will initiate the reset of the given adapter.
6889 * If the caller needs to wait on the completion of the reset,
6890 * the caller must sleep on the reset_wait_q.
6891 *
6892 * Return value:
6893 * none
6894 **/
6895 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6896 enum ipr_shutdown_type shutdown_type)
6897 {
6898 if (ioa_cfg->ioa_is_dead)
6899 return;
6900
6901 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6902 ioa_cfg->sdt_state = ABORT_DUMP;
6903
6904 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6905 dev_err(&ioa_cfg->pdev->dev,
6906 "IOA taken offline - error recovery failed\n");
6907
6908 ioa_cfg->reset_retries = 0;
6909 ioa_cfg->ioa_is_dead = 1;
6910
6911 if (ioa_cfg->in_ioa_bringdown) {
6912 ioa_cfg->reset_cmd = NULL;
6913 ioa_cfg->in_reset_reload = 0;
6914 ipr_fail_all_ops(ioa_cfg);
6915 wake_up_all(&ioa_cfg->reset_wait_q);
6916
6917 spin_unlock_irq(ioa_cfg->host->host_lock);
6918 scsi_unblock_requests(ioa_cfg->host);
6919 spin_lock_irq(ioa_cfg->host->host_lock);
6920 return;
6921 } else {
6922 ioa_cfg->in_ioa_bringdown = 1;
6923 shutdown_type = IPR_SHUTDOWN_NONE;
6924 }
6925 }
6926
6927 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6928 shutdown_type);
6929 }
6930
6931 /**
6932 * ipr_reset_freeze - Hold off all I/O activity
6933 * @ipr_cmd: ipr command struct
6934 *
6935 * Description: If the PCI slot is frozen, hold off all I/O
6936 * activity; then, as soon as the slot is available again,
6937 * initiate an adapter reset.
6938 */
6939 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6940 {
6941 /* Disallow new interrupts, avoid loop */
6942 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6943 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6944 ipr_cmd->done = ipr_reset_ioa_job;
6945 return IPR_RC_JOB_RETURN;
6946 }
6947
6948 /**
6949 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6950 * @pdev: PCI device struct
6951 *
6952 * Description: This routine is called to tell us that the PCI bus
6953 * is down. Can't do anything here, except put the device driver
6954 * into a holding pattern, waiting for the PCI bus to come back.
6955 */
6956 static void ipr_pci_frozen(struct pci_dev *pdev)
6957 {
6958 unsigned long flags = 0;
6959 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6960
6961 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6962 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6963 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6964 }
6965
6966 /**
6967 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6968 * @pdev: PCI device struct
6969 *
6970 * Description: This routine is called by the pci error recovery
6971 * code after the PCI slot has been reset, just before we
6972 * should resume normal operations.
6973 */
6974 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6975 {
6976 unsigned long flags = 0;
6977 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6978
6979 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6980 if (ioa_cfg->needs_warm_reset)
6981 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6982 else
6983 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
6984 IPR_SHUTDOWN_NONE);
6985 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6986 return PCI_ERS_RESULT_RECOVERED;
6987 }
6988
6989 /**
6990 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
6991 * @pdev: PCI device struct
6992 *
6993 * Description: This routine is called when the PCI bus has
6994 * permanently failed.
6995 */
6996 static void ipr_pci_perm_failure(struct pci_dev *pdev)
6997 {
6998 unsigned long flags = 0;
6999 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7000
7001 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7002 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7003 ioa_cfg->sdt_state = ABORT_DUMP;
7004 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
7005 ioa_cfg->in_ioa_bringdown = 1;
7006 ioa_cfg->allow_cmds = 0;
7007 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7008 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7009 }
7010
7011 /**
7012 * ipr_pci_error_detected - Called when a PCI error is detected.
7013 * @pdev: PCI device struct
7014 * @state: PCI channel state
7015 *
7016 * Description: Called when a PCI error is detected.
7017 *
7018 * Return value:
7019 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
7020 */
7021 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
7022 pci_channel_state_t state)
7023 {
7024 switch (state) {
7025 case pci_channel_io_frozen:
7026 ipr_pci_frozen(pdev);
7027 return PCI_ERS_RESULT_NEED_RESET;
7028 case pci_channel_io_perm_failure:
7029 ipr_pci_perm_failure(pdev);
7030 return PCI_ERS_RESULT_DISCONNECT;
7031 break;
7032 default:
7033 break;
7034 }
7035 return PCI_ERS_RESULT_NEED_RESET;
7036 }
7037
7038 /**
7039 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
7040 * @ioa_cfg: ioa cfg struct
7041 *
7042 * Description: This is the second phase of adapter intialization
7043 * This function takes care of initilizing the adapter to the point
7044 * where it can accept new commands.
7045
7046 * Return value:
7047 * 0 on success / -EIO on failure
7048 **/
7049 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
7050 {
7051 int rc = 0;
7052 unsigned long host_lock_flags = 0;
7053
7054 ENTER;
7055 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7056 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
7057 if (ioa_cfg->needs_hard_reset) {
7058 ioa_cfg->needs_hard_reset = 0;
7059 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7060 } else
7061 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
7062 IPR_SHUTDOWN_NONE);
7063
7064 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7065 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7066 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7067
7068 if (ioa_cfg->ioa_is_dead) {
7069 rc = -EIO;
7070 } else if (ipr_invalid_adapter(ioa_cfg)) {
7071 if (!ipr_testmode)
7072 rc = -EIO;
7073
7074 dev_err(&ioa_cfg->pdev->dev,
7075 "Adapter not supported in this hardware configuration.\n");
7076 }
7077
7078 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7079
7080 LEAVE;
7081 return rc;
7082 }
7083
7084 /**
7085 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
7086 * @ioa_cfg: ioa config struct
7087 *
7088 * Return value:
7089 * none
7090 **/
7091 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7092 {
7093 int i;
7094
7095 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7096 if (ioa_cfg->ipr_cmnd_list[i])
7097 pci_pool_free(ioa_cfg->ipr_cmd_pool,
7098 ioa_cfg->ipr_cmnd_list[i],
7099 ioa_cfg->ipr_cmnd_list_dma[i]);
7100
7101 ioa_cfg->ipr_cmnd_list[i] = NULL;
7102 }
7103
7104 if (ioa_cfg->ipr_cmd_pool)
7105 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
7106
7107 ioa_cfg->ipr_cmd_pool = NULL;
7108 }
7109
7110 /**
7111 * ipr_free_mem - Frees memory allocated for an adapter
7112 * @ioa_cfg: ioa cfg struct
7113 *
7114 * Return value:
7115 * nothing
7116 **/
7117 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
7118 {
7119 int i;
7120
7121 kfree(ioa_cfg->res_entries);
7122 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
7123 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7124 ipr_free_cmd_blks(ioa_cfg);
7125 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7126 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7127 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
7128 ioa_cfg->cfg_table,
7129 ioa_cfg->cfg_table_dma);
7130
7131 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7132 pci_free_consistent(ioa_cfg->pdev,
7133 sizeof(struct ipr_hostrcb),
7134 ioa_cfg->hostrcb[i],
7135 ioa_cfg->hostrcb_dma[i]);
7136 }
7137
7138 ipr_free_dump(ioa_cfg);
7139 kfree(ioa_cfg->trace);
7140 }
7141
7142 /**
7143 * ipr_free_all_resources - Free all allocated resources for an adapter.
7144 * @ipr_cmd: ipr command struct
7145 *
7146 * This function frees all allocated resources for the
7147 * specified adapter.
7148 *
7149 * Return value:
7150 * none
7151 **/
7152 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
7153 {
7154 struct pci_dev *pdev = ioa_cfg->pdev;
7155
7156 ENTER;
7157 free_irq(pdev->irq, ioa_cfg);
7158 pci_disable_msi(pdev);
7159 iounmap(ioa_cfg->hdw_dma_regs);
7160 pci_release_regions(pdev);
7161 ipr_free_mem(ioa_cfg);
7162 scsi_host_put(ioa_cfg->host);
7163 pci_disable_device(pdev);
7164 LEAVE;
7165 }
7166
7167 /**
7168 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
7169 * @ioa_cfg: ioa config struct
7170 *
7171 * Return value:
7172 * 0 on success / -ENOMEM on allocation failure
7173 **/
7174 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7175 {
7176 struct ipr_cmnd *ipr_cmd;
7177 struct ipr_ioarcb *ioarcb;
7178 dma_addr_t dma_addr;
7179 int i;
7180
7181 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
7182 sizeof(struct ipr_cmnd), 8, 0);
7183
7184 if (!ioa_cfg->ipr_cmd_pool)
7185 return -ENOMEM;
7186
7187 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7188 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
7189
7190 if (!ipr_cmd) {
7191 ipr_free_cmd_blks(ioa_cfg);
7192 return -ENOMEM;
7193 }
7194
7195 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
7196 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
7197 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
7198
7199 ioarcb = &ipr_cmd->ioarcb;
7200 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
7201 ioarcb->host_response_handle = cpu_to_be32(i << 2);
7202 ioarcb->write_ioadl_addr =
7203 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
7204 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
7205 ioarcb->ioasa_host_pci_addr =
7206 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
7207 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
7208 ipr_cmd->cmd_index = i;
7209 ipr_cmd->ioa_cfg = ioa_cfg;
7210 ipr_cmd->sense_buffer_dma = dma_addr +
7211 offsetof(struct ipr_cmnd, sense_buffer);
7212
7213 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7214 }
7215
7216 return 0;
7217 }
7218
7219 /**
7220 * ipr_alloc_mem - Allocate memory for an adapter
7221 * @ioa_cfg: ioa config struct
7222 *
7223 * Return value:
7224 * 0 on success / non-zero for error
7225 **/
7226 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
7227 {
7228 struct pci_dev *pdev = ioa_cfg->pdev;
7229 int i, rc = -ENOMEM;
7230
7231 ENTER;
7232 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
7233 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7234
7235 if (!ioa_cfg->res_entries)
7236 goto out;
7237
7238 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7239 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7240
7241 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7242 sizeof(struct ipr_misc_cbs),
7243 &ioa_cfg->vpd_cbs_dma);
7244
7245 if (!ioa_cfg->vpd_cbs)
7246 goto out_free_res_entries;
7247
7248 if (ipr_alloc_cmd_blks(ioa_cfg))
7249 goto out_free_vpd_cbs;
7250
7251 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7252 sizeof(u32) * IPR_NUM_CMD_BLKS,
7253 &ioa_cfg->host_rrq_dma);
7254
7255 if (!ioa_cfg->host_rrq)
7256 goto out_ipr_free_cmd_blocks;
7257
7258 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7259 sizeof(struct ipr_config_table),
7260 &ioa_cfg->cfg_table_dma);
7261
7262 if (!ioa_cfg->cfg_table)
7263 goto out_free_host_rrq;
7264
7265 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7266 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7267 sizeof(struct ipr_hostrcb),
7268 &ioa_cfg->hostrcb_dma[i]);
7269
7270 if (!ioa_cfg->hostrcb[i])
7271 goto out_free_hostrcb_dma;
7272
7273 ioa_cfg->hostrcb[i]->hostrcb_dma =
7274 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
7275 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
7276 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7277 }
7278
7279 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
7280 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7281
7282 if (!ioa_cfg->trace)
7283 goto out_free_hostrcb_dma;
7284
7285 rc = 0;
7286 out:
7287 LEAVE;
7288 return rc;
7289
7290 out_free_hostrcb_dma:
7291 while (i-- > 0) {
7292 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7293 ioa_cfg->hostrcb[i],
7294 ioa_cfg->hostrcb_dma[i]);
7295 }
7296 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7297 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7298 out_free_host_rrq:
7299 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7300 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7301 out_ipr_free_cmd_blocks:
7302 ipr_free_cmd_blks(ioa_cfg);
7303 out_free_vpd_cbs:
7304 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7305 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7306 out_free_res_entries:
7307 kfree(ioa_cfg->res_entries);
7308 goto out;
7309 }
7310
7311 /**
7312 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7313 * @ioa_cfg: ioa config struct
7314 *
7315 * Return value:
7316 * none
7317 **/
7318 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7319 {
7320 int i;
7321
7322 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7323 ioa_cfg->bus_attr[i].bus = i;
7324 ioa_cfg->bus_attr[i].qas_enabled = 0;
7325 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7326 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7327 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7328 else
7329 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7330 }
7331 }
7332
7333 /**
7334 * ipr_init_ioa_cfg - Initialize IOA config struct
7335 * @ioa_cfg: ioa config struct
7336 * @host: scsi host struct
7337 * @pdev: PCI dev struct
7338 *
7339 * Return value:
7340 * none
7341 **/
7342 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7343 struct Scsi_Host *host, struct pci_dev *pdev)
7344 {
7345 const struct ipr_interrupt_offsets *p;
7346 struct ipr_interrupts *t;
7347 void __iomem *base;
7348
7349 ioa_cfg->host = host;
7350 ioa_cfg->pdev = pdev;
7351 ioa_cfg->log_level = ipr_log_level;
7352 ioa_cfg->doorbell = IPR_DOORBELL;
7353 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7354 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7355 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7356 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7357 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7358 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7359 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7360 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7361
7362 INIT_LIST_HEAD(&ioa_cfg->free_q);
7363 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7364 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7365 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7366 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7367 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
7368 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
7369 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7370 init_waitqueue_head(&ioa_cfg->msi_wait_q);
7371 ioa_cfg->sdt_state = INACTIVE;
7372 if (ipr_enable_cache)
7373 ioa_cfg->cache_state = CACHE_ENABLED;
7374 else
7375 ioa_cfg->cache_state = CACHE_DISABLED;
7376
7377 ipr_initialize_bus_attr(ioa_cfg);
7378
7379 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7380 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7381 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7382 host->unique_id = host->host_no;
7383 host->max_cmd_len = IPR_MAX_CDB_LEN;
7384 pci_set_drvdata(pdev, ioa_cfg);
7385
7386 p = &ioa_cfg->chip_cfg->regs;
7387 t = &ioa_cfg->regs;
7388 base = ioa_cfg->hdw_dma_regs;
7389
7390 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7391 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7392 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7393 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7394 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7395 t->ioarrin_reg = base + p->ioarrin_reg;
7396 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7397 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7398 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7399 }
7400
7401 /**
7402 * ipr_get_chip_info - Find adapter chip information
7403 * @dev_id: PCI device id struct
7404 *
7405 * Return value:
7406 * ptr to chip information on success / NULL on failure
7407 **/
7408 static const struct ipr_chip_t * __devinit
7409 ipr_get_chip_info(const struct pci_device_id *dev_id)
7410 {
7411 int i;
7412
7413 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7414 if (ipr_chip[i].vendor == dev_id->vendor &&
7415 ipr_chip[i].device == dev_id->device)
7416 return &ipr_chip[i];
7417 return NULL;
7418 }
7419
7420 /**
7421 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
7422 * @pdev: PCI device struct
7423 *
7424 * Description: Simply set the msi_received flag to 1 indicating that
7425 * Message Signaled Interrupts are supported.
7426 *
7427 * Return value:
7428 * 0 on success / non-zero on failure
7429 **/
7430 static irqreturn_t __devinit ipr_test_intr(int irq, void *devp)
7431 {
7432 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
7433 unsigned long lock_flags = 0;
7434 irqreturn_t rc = IRQ_HANDLED;
7435
7436 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7437
7438 ioa_cfg->msi_received = 1;
7439 wake_up(&ioa_cfg->msi_wait_q);
7440
7441 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7442 return rc;
7443 }
7444
7445 /**
7446 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
7447 * @pdev: PCI device struct
7448 *
7449 * Description: The return value from pci_enable_msi() can not always be
7450 * trusted. This routine sets up and initiates a test interrupt to determine
7451 * if the interrupt is received via the ipr_test_intr() service routine.
7452 * If the tests fails, the driver will fall back to LSI.
7453 *
7454 * Return value:
7455 * 0 on success / non-zero on failure
7456 **/
7457 static int __devinit ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg,
7458 struct pci_dev *pdev)
7459 {
7460 int rc;
7461 volatile u32 int_reg;
7462 unsigned long lock_flags = 0;
7463
7464 ENTER;
7465
7466 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7467 init_waitqueue_head(&ioa_cfg->msi_wait_q);
7468 ioa_cfg->msi_received = 0;
7469 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
7470 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg);
7471 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7472 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7473
7474 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
7475 if (rc) {
7476 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
7477 return rc;
7478 } else if (ipr_debug)
7479 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
7480
7481 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg);
7482 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
7483 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
7484 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
7485
7486 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7487 if (!ioa_cfg->msi_received) {
7488 /* MSI test failed */
7489 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
7490 rc = -EOPNOTSUPP;
7491 } else if (ipr_debug)
7492 dev_info(&pdev->dev, "MSI test succeeded.\n");
7493
7494 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7495
7496 free_irq(pdev->irq, ioa_cfg);
7497
7498 LEAVE;
7499
7500 return rc;
7501 }
7502
7503 /**
7504 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7505 * @pdev: PCI device struct
7506 * @dev_id: PCI device id struct
7507 *
7508 * Return value:
7509 * 0 on success / non-zero on failure
7510 **/
7511 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7512 const struct pci_device_id *dev_id)
7513 {
7514 struct ipr_ioa_cfg *ioa_cfg;
7515 struct Scsi_Host *host;
7516 unsigned long ipr_regs_pci;
7517 void __iomem *ipr_regs;
7518 int rc = PCIBIOS_SUCCESSFUL;
7519 volatile u32 mask, uproc, interrupts;
7520
7521 ENTER;
7522
7523 if ((rc = pci_enable_device(pdev))) {
7524 dev_err(&pdev->dev, "Cannot enable adapter\n");
7525 goto out;
7526 }
7527
7528 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7529
7530 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7531
7532 if (!host) {
7533 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7534 rc = -ENOMEM;
7535 goto out_disable;
7536 }
7537
7538 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7539 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
7540 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7541 sata_port_info.flags, &ipr_sata_ops);
7542
7543 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
7544
7545 if (!ioa_cfg->ipr_chip) {
7546 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7547 dev_id->vendor, dev_id->device);
7548 goto out_scsi_host_put;
7549 }
7550
7551 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
7552
7553 if (ipr_transop_timeout)
7554 ioa_cfg->transop_timeout = ipr_transop_timeout;
7555 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
7556 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
7557 else
7558 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
7559
7560 ioa_cfg->revid = pdev->revision;
7561
7562 ipr_regs_pci = pci_resource_start(pdev, 0);
7563
7564 rc = pci_request_regions(pdev, IPR_NAME);
7565 if (rc < 0) {
7566 dev_err(&pdev->dev,
7567 "Couldn't register memory range of registers\n");
7568 goto out_scsi_host_put;
7569 }
7570
7571 ipr_regs = pci_ioremap_bar(pdev, 0);
7572
7573 if (!ipr_regs) {
7574 dev_err(&pdev->dev,
7575 "Couldn't map memory range of registers\n");
7576 rc = -ENOMEM;
7577 goto out_release_regions;
7578 }
7579
7580 ioa_cfg->hdw_dma_regs = ipr_regs;
7581 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7582 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7583
7584 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7585
7586 pci_set_master(pdev);
7587
7588 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
7589 if (rc < 0) {
7590 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7591 goto cleanup_nomem;
7592 }
7593
7594 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7595 ioa_cfg->chip_cfg->cache_line_size);
7596
7597 if (rc != PCIBIOS_SUCCESSFUL) {
7598 dev_err(&pdev->dev, "Write of cache line size failed\n");
7599 rc = -EIO;
7600 goto cleanup_nomem;
7601 }
7602
7603 /* Enable MSI style interrupts if they are supported. */
7604 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) {
7605 rc = ipr_test_msi(ioa_cfg, pdev);
7606 if (rc == -EOPNOTSUPP)
7607 pci_disable_msi(pdev);
7608 else if (rc)
7609 goto out_msi_disable;
7610 else
7611 dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq);
7612 } else if (ipr_debug)
7613 dev_info(&pdev->dev, "Cannot enable MSI.\n");
7614
7615 /* Save away PCI config space for use following IOA reset */
7616 rc = pci_save_state(pdev);
7617
7618 if (rc != PCIBIOS_SUCCESSFUL) {
7619 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7620 rc = -EIO;
7621 goto cleanup_nomem;
7622 }
7623
7624 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7625 goto cleanup_nomem;
7626
7627 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7628 goto cleanup_nomem;
7629
7630 rc = ipr_alloc_mem(ioa_cfg);
7631 if (rc < 0) {
7632 dev_err(&pdev->dev,
7633 "Couldn't allocate enough memory for device driver!\n");
7634 goto cleanup_nomem;
7635 }
7636
7637 /*
7638 * If HRRQ updated interrupt is not masked, or reset alert is set,
7639 * the card is in an unknown state and needs a hard reset
7640 */
7641 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7642 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
7643 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7644 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7645 ioa_cfg->needs_hard_reset = 1;
7646 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
7647 ioa_cfg->needs_hard_reset = 1;
7648 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
7649 ioa_cfg->ioa_unit_checked = 1;
7650
7651 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
7652 rc = request_irq(pdev->irq, ipr_isr,
7653 ioa_cfg->msi_received ? 0 : IRQF_SHARED,
7654 IPR_NAME, ioa_cfg);
7655
7656 if (rc) {
7657 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7658 pdev->irq, rc);
7659 goto cleanup_nolog;
7660 }
7661
7662 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
7663 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
7664 ioa_cfg->needs_warm_reset = 1;
7665 ioa_cfg->reset = ipr_reset_slot_reset;
7666 } else
7667 ioa_cfg->reset = ipr_reset_start_bist;
7668
7669 spin_lock(&ipr_driver_lock);
7670 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7671 spin_unlock(&ipr_driver_lock);
7672
7673 LEAVE;
7674 out:
7675 return rc;
7676
7677 cleanup_nolog:
7678 ipr_free_mem(ioa_cfg);
7679 cleanup_nomem:
7680 iounmap(ipr_regs);
7681 out_msi_disable:
7682 pci_disable_msi(pdev);
7683 out_release_regions:
7684 pci_release_regions(pdev);
7685 out_scsi_host_put:
7686 scsi_host_put(host);
7687 out_disable:
7688 pci_disable_device(pdev);
7689 goto out;
7690 }
7691
7692 /**
7693 * ipr_scan_vsets - Scans for VSET devices
7694 * @ioa_cfg: ioa config struct
7695 *
7696 * Description: Since the VSET resources do not follow SAM in that we can have
7697 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7698 *
7699 * Return value:
7700 * none
7701 **/
7702 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7703 {
7704 int target, lun;
7705
7706 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7707 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7708 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7709 }
7710
7711 /**
7712 * ipr_initiate_ioa_bringdown - Bring down an adapter
7713 * @ioa_cfg: ioa config struct
7714 * @shutdown_type: shutdown type
7715 *
7716 * Description: This function will initiate bringing down the adapter.
7717 * This consists of issuing an IOA shutdown to the adapter
7718 * to flush the cache, and running BIST.
7719 * If the caller needs to wait on the completion of the reset,
7720 * the caller must sleep on the reset_wait_q.
7721 *
7722 * Return value:
7723 * none
7724 **/
7725 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7726 enum ipr_shutdown_type shutdown_type)
7727 {
7728 ENTER;
7729 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7730 ioa_cfg->sdt_state = ABORT_DUMP;
7731 ioa_cfg->reset_retries = 0;
7732 ioa_cfg->in_ioa_bringdown = 1;
7733 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7734 LEAVE;
7735 }
7736
7737 /**
7738 * __ipr_remove - Remove a single adapter
7739 * @pdev: pci device struct
7740 *
7741 * Adapter hot plug remove entry point.
7742 *
7743 * Return value:
7744 * none
7745 **/
7746 static void __ipr_remove(struct pci_dev *pdev)
7747 {
7748 unsigned long host_lock_flags = 0;
7749 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7750 ENTER;
7751
7752 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7753 while(ioa_cfg->in_reset_reload) {
7754 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7755 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7756 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7757 }
7758
7759 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7760
7761 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7762 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7763 flush_scheduled_work();
7764 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7765
7766 spin_lock(&ipr_driver_lock);
7767 list_del(&ioa_cfg->queue);
7768 spin_unlock(&ipr_driver_lock);
7769
7770 if (ioa_cfg->sdt_state == ABORT_DUMP)
7771 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7772 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7773
7774 ipr_free_all_resources(ioa_cfg);
7775
7776 LEAVE;
7777 }
7778
7779 /**
7780 * ipr_remove - IOA hot plug remove entry point
7781 * @pdev: pci device struct
7782 *
7783 * Adapter hot plug remove entry point.
7784 *
7785 * Return value:
7786 * none
7787 **/
7788 static void __devexit ipr_remove(struct pci_dev *pdev)
7789 {
7790 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7791
7792 ENTER;
7793
7794 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
7795 &ipr_trace_attr);
7796 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
7797 &ipr_dump_attr);
7798 scsi_remove_host(ioa_cfg->host);
7799
7800 __ipr_remove(pdev);
7801
7802 LEAVE;
7803 }
7804
7805 /**
7806 * ipr_probe - Adapter hot plug add entry point
7807 *
7808 * Return value:
7809 * 0 on success / non-zero on failure
7810 **/
7811 static int __devinit ipr_probe(struct pci_dev *pdev,
7812 const struct pci_device_id *dev_id)
7813 {
7814 struct ipr_ioa_cfg *ioa_cfg;
7815 int rc;
7816
7817 rc = ipr_probe_ioa(pdev, dev_id);
7818
7819 if (rc)
7820 return rc;
7821
7822 ioa_cfg = pci_get_drvdata(pdev);
7823 rc = ipr_probe_ioa_part2(ioa_cfg);
7824
7825 if (rc) {
7826 __ipr_remove(pdev);
7827 return rc;
7828 }
7829
7830 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7831
7832 if (rc) {
7833 __ipr_remove(pdev);
7834 return rc;
7835 }
7836
7837 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
7838 &ipr_trace_attr);
7839
7840 if (rc) {
7841 scsi_remove_host(ioa_cfg->host);
7842 __ipr_remove(pdev);
7843 return rc;
7844 }
7845
7846 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
7847 &ipr_dump_attr);
7848
7849 if (rc) {
7850 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
7851 &ipr_trace_attr);
7852 scsi_remove_host(ioa_cfg->host);
7853 __ipr_remove(pdev);
7854 return rc;
7855 }
7856
7857 scsi_scan_host(ioa_cfg->host);
7858 ipr_scan_vsets(ioa_cfg);
7859 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7860 ioa_cfg->allow_ml_add_del = 1;
7861 ioa_cfg->host->max_channel = IPR_VSET_BUS;
7862 schedule_work(&ioa_cfg->work_q);
7863 return 0;
7864 }
7865
7866 /**
7867 * ipr_shutdown - Shutdown handler.
7868 * @pdev: pci device struct
7869 *
7870 * This function is invoked upon system shutdown/reboot. It will issue
7871 * an adapter shutdown to the adapter to flush the write cache.
7872 *
7873 * Return value:
7874 * none
7875 **/
7876 static void ipr_shutdown(struct pci_dev *pdev)
7877 {
7878 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7879 unsigned long lock_flags = 0;
7880
7881 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7882 while(ioa_cfg->in_reset_reload) {
7883 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7884 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7885 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7886 }
7887
7888 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7889 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7890 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7891 }
7892
7893 static struct pci_device_id ipr_pci_table[] __devinitdata = {
7894 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7895 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
7896 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7897 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
7898 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7899 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
7900 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7901 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
7902 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7903 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
7904 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7905 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
7906 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7907 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
7908 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7909 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
7910 IPR_USE_LONG_TRANSOP_TIMEOUT },
7911 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7912 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7913 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7914 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7915 IPR_USE_LONG_TRANSOP_TIMEOUT },
7916 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7917 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7918 IPR_USE_LONG_TRANSOP_TIMEOUT },
7919 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7920 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7921 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7922 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7923 IPR_USE_LONG_TRANSOP_TIMEOUT},
7924 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7925 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7926 IPR_USE_LONG_TRANSOP_TIMEOUT },
7927 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7928 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
7929 IPR_USE_LONG_TRANSOP_TIMEOUT },
7930 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7931 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0,
7932 IPR_USE_LONG_TRANSOP_TIMEOUT },
7933 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7934 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
7935 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7936 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
7937 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
7938 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
7939 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
7940 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7941 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
7942 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7943 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
7944 IPR_USE_LONG_TRANSOP_TIMEOUT },
7945 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7946 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
7947 IPR_USE_LONG_TRANSOP_TIMEOUT },
7948 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E,
7949 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0,
7950 IPR_USE_LONG_TRANSOP_TIMEOUT },
7951 { }
7952 };
7953 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7954
7955 static struct pci_error_handlers ipr_err_handler = {
7956 .error_detected = ipr_pci_error_detected,
7957 .slot_reset = ipr_pci_slot_reset,
7958 };
7959
7960 static struct pci_driver ipr_driver = {
7961 .name = IPR_NAME,
7962 .id_table = ipr_pci_table,
7963 .probe = ipr_probe,
7964 .remove = __devexit_p(ipr_remove),
7965 .shutdown = ipr_shutdown,
7966 .err_handler = &ipr_err_handler,
7967 };
7968
7969 /**
7970 * ipr_init - Module entry point
7971 *
7972 * Return value:
7973 * 0 on success / negative value on failure
7974 **/
7975 static int __init ipr_init(void)
7976 {
7977 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7978 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7979
7980 return pci_register_driver(&ipr_driver);
7981 }
7982
7983 /**
7984 * ipr_exit - Module unload
7985 *
7986 * Module unload entry point.
7987 *
7988 * Return value:
7989 * none
7990 **/
7991 static void __exit ipr_exit(void)
7992 {
7993 pci_unregister_driver(&ipr_driver);
7994 }
7995
7996 module_init(ipr_init);
7997 module_exit(ipr_exit);
Linux with added FPC-III support