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1da177e4 LT |
1 | /* |
2 | * ipr.c -- driver for IBM Power Linux RAID adapters | |
3 | * | |
4 | * Written By: Brian King <brking@us.ibm.com>, IBM Corporation | |
5 | * | |
6 | * Copyright (C) 2003, 2004 IBM Corporation | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | * | |
22 | */ | |
23 | ||
24 | /* | |
25 | * Notes: | |
26 | * | |
27 | * This driver is used to control the following SCSI adapters: | |
28 | * | |
29 | * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B | |
30 | * | |
31 | * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter | |
32 | * PCI-X Dual Channel Ultra 320 SCSI Adapter | |
33 | * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card | |
34 | * Embedded SCSI adapter on p615 and p655 systems | |
35 | * | |
36 | * Supported Hardware Features: | |
37 | * - Ultra 320 SCSI controller | |
38 | * - PCI-X host interface | |
39 | * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine | |
40 | * - Non-Volatile Write Cache | |
41 | * - Supports attachment of non-RAID disks, tape, and optical devices | |
42 | * - RAID Levels 0, 5, 10 | |
43 | * - Hot spare | |
44 | * - Background Parity Checking | |
45 | * - Background Data Scrubbing | |
46 | * - Ability to increase the capacity of an existing RAID 5 disk array | |
47 | * by adding disks | |
48 | * | |
49 | * Driver Features: | |
50 | * - Tagged command queuing | |
51 | * - Adapter microcode download | |
52 | * - PCI hot plug | |
53 | * - SCSI device hot plug | |
54 | * | |
55 | */ | |
56 | ||
57 | #include <linux/config.h> | |
58 | #include <linux/fs.h> | |
59 | #include <linux/init.h> | |
60 | #include <linux/types.h> | |
61 | #include <linux/errno.h> | |
62 | #include <linux/kernel.h> | |
63 | #include <linux/ioport.h> | |
64 | #include <linux/delay.h> | |
65 | #include <linux/pci.h> | |
66 | #include <linux/wait.h> | |
67 | #include <linux/spinlock.h> | |
68 | #include <linux/sched.h> | |
69 | #include <linux/interrupt.h> | |
70 | #include <linux/blkdev.h> | |
71 | #include <linux/firmware.h> | |
72 | #include <linux/module.h> | |
73 | #include <linux/moduleparam.h> | |
74 | #include <asm/io.h> | |
75 | #include <asm/irq.h> | |
76 | #include <asm/processor.h> | |
77 | #include <scsi/scsi.h> | |
78 | #include <scsi/scsi_host.h> | |
79 | #include <scsi/scsi_tcq.h> | |
80 | #include <scsi/scsi_eh.h> | |
81 | #include <scsi/scsi_cmnd.h> | |
82 | #include <scsi/scsi_request.h> | |
83 | #include "ipr.h" | |
84 | ||
85 | /* | |
86 | * Global Data | |
87 | */ | |
88 | static struct list_head ipr_ioa_head = LIST_HEAD_INIT(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 = IPR_OPERATIONAL_TIMEOUT; | |
94 | static DEFINE_SPINLOCK(ipr_driver_lock); | |
95 | ||
96 | /* This table describes the differences between DMA controller chips */ | |
97 | static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { | |
98 | { /* Gemstone and Citrine */ | |
99 | .mailbox = 0x0042C, | |
100 | .cache_line_size = 0x20, | |
101 | { | |
102 | .set_interrupt_mask_reg = 0x0022C, | |
103 | .clr_interrupt_mask_reg = 0x00230, | |
104 | .sense_interrupt_mask_reg = 0x0022C, | |
105 | .clr_interrupt_reg = 0x00228, | |
106 | .sense_interrupt_reg = 0x00224, | |
107 | .ioarrin_reg = 0x00404, | |
108 | .sense_uproc_interrupt_reg = 0x00214, | |
109 | .set_uproc_interrupt_reg = 0x00214, | |
110 | .clr_uproc_interrupt_reg = 0x00218 | |
111 | } | |
112 | }, | |
113 | { /* Snipe and Scamp */ | |
114 | .mailbox = 0x0052C, | |
115 | .cache_line_size = 0x20, | |
116 | { | |
117 | .set_interrupt_mask_reg = 0x00288, | |
118 | .clr_interrupt_mask_reg = 0x0028C, | |
119 | .sense_interrupt_mask_reg = 0x00288, | |
120 | .clr_interrupt_reg = 0x00284, | |
121 | .sense_interrupt_reg = 0x00280, | |
122 | .ioarrin_reg = 0x00504, | |
123 | .sense_uproc_interrupt_reg = 0x00290, | |
124 | .set_uproc_interrupt_reg = 0x00290, | |
125 | .clr_uproc_interrupt_reg = 0x00294 | |
126 | } | |
127 | }, | |
128 | }; | |
129 | ||
130 | static const struct ipr_chip_t ipr_chip[] = { | |
131 | { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] }, | |
132 | { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] }, | |
133 | { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] }, | |
134 | { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] } | |
135 | }; | |
136 | ||
137 | static int ipr_max_bus_speeds [] = { | |
138 | IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE | |
139 | }; | |
140 | ||
141 | MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); | |
142 | MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); | |
143 | module_param_named(max_speed, ipr_max_speed, uint, 0); | |
144 | MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); | |
145 | module_param_named(log_level, ipr_log_level, uint, 0); | |
146 | MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); | |
147 | module_param_named(testmode, ipr_testmode, int, 0); | |
148 | MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); | |
149 | module_param_named(fastfail, ipr_fastfail, int, 0); | |
150 | MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); | |
151 | module_param_named(transop_timeout, ipr_transop_timeout, int, 0); | |
152 | MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); | |
153 | MODULE_LICENSE("GPL"); | |
154 | MODULE_VERSION(IPR_DRIVER_VERSION); | |
155 | ||
156 | static const char *ipr_gpdd_dev_end_states[] = { | |
157 | "Command complete", | |
158 | "Terminated by host", | |
159 | "Terminated by device reset", | |
160 | "Terminated by bus reset", | |
161 | "Unknown", | |
162 | "Command not started" | |
163 | }; | |
164 | ||
165 | static const char *ipr_gpdd_dev_bus_phases[] = { | |
166 | "Bus free", | |
167 | "Arbitration", | |
168 | "Selection", | |
169 | "Message out", | |
170 | "Command", | |
171 | "Message in", | |
172 | "Data out", | |
173 | "Data in", | |
174 | "Status", | |
175 | "Reselection", | |
176 | "Unknown" | |
177 | }; | |
178 | ||
179 | /* A constant array of IOASCs/URCs/Error Messages */ | |
180 | static const | |
181 | struct ipr_error_table_t ipr_error_table[] = { | |
182 | {0x00000000, 1, 1, | |
183 | "8155: An unknown error was received"}, | |
184 | {0x00330000, 0, 0, | |
185 | "Soft underlength error"}, | |
186 | {0x005A0000, 0, 0, | |
187 | "Command to be cancelled not found"}, | |
188 | {0x00808000, 0, 0, | |
189 | "Qualified success"}, | |
190 | {0x01080000, 1, 1, | |
191 | "FFFE: Soft device bus error recovered by the IOA"}, | |
192 | {0x01170600, 0, 1, | |
193 | "FFF9: Device sector reassign successful"}, | |
194 | {0x01170900, 0, 1, | |
195 | "FFF7: Media error recovered by device rewrite procedures"}, | |
196 | {0x01180200, 0, 1, | |
197 | "7001: IOA sector reassignment successful"}, | |
198 | {0x01180500, 0, 1, | |
199 | "FFF9: Soft media error. Sector reassignment recommended"}, | |
200 | {0x01180600, 0, 1, | |
201 | "FFF7: Media error recovered by IOA rewrite procedures"}, | |
202 | {0x01418000, 0, 1, | |
203 | "FF3D: Soft PCI bus error recovered by the IOA"}, | |
204 | {0x01440000, 1, 1, | |
205 | "FFF6: Device hardware error recovered by the IOA"}, | |
206 | {0x01448100, 0, 1, | |
207 | "FFF6: Device hardware error recovered by the device"}, | |
208 | {0x01448200, 1, 1, | |
209 | "FF3D: Soft IOA error recovered by the IOA"}, | |
210 | {0x01448300, 0, 1, | |
211 | "FFFA: Undefined device response recovered by the IOA"}, | |
212 | {0x014A0000, 1, 1, | |
213 | "FFF6: Device bus error, message or command phase"}, | |
214 | {0x015D0000, 0, 1, | |
215 | "FFF6: Failure prediction threshold exceeded"}, | |
216 | {0x015D9200, 0, 1, | |
217 | "8009: Impending cache battery pack failure"}, | |
218 | {0x02040400, 0, 0, | |
219 | "34FF: Disk device format in progress"}, | |
220 | {0x023F0000, 0, 0, | |
221 | "Synchronization required"}, | |
222 | {0x024E0000, 0, 0, | |
223 | "No ready, IOA shutdown"}, | |
224 | {0x025A0000, 0, 0, | |
225 | "Not ready, IOA has been shutdown"}, | |
226 | {0x02670100, 0, 1, | |
227 | "3020: Storage subsystem configuration error"}, | |
228 | {0x03110B00, 0, 0, | |
229 | "FFF5: Medium error, data unreadable, recommend reassign"}, | |
230 | {0x03110C00, 0, 0, | |
231 | "7000: Medium error, data unreadable, do not reassign"}, | |
232 | {0x03310000, 0, 1, | |
233 | "FFF3: Disk media format bad"}, | |
234 | {0x04050000, 0, 1, | |
235 | "3002: Addressed device failed to respond to selection"}, | |
236 | {0x04080000, 1, 1, | |
237 | "3100: Device bus error"}, | |
238 | {0x04080100, 0, 1, | |
239 | "3109: IOA timed out a device command"}, | |
240 | {0x04088000, 0, 0, | |
241 | "3120: SCSI bus is not operational"}, | |
242 | {0x04118000, 0, 1, | |
243 | "9000: IOA reserved area data check"}, | |
244 | {0x04118100, 0, 1, | |
245 | "9001: IOA reserved area invalid data pattern"}, | |
246 | {0x04118200, 0, 1, | |
247 | "9002: IOA reserved area LRC error"}, | |
248 | {0x04320000, 0, 1, | |
249 | "102E: Out of alternate sectors for disk storage"}, | |
250 | {0x04330000, 1, 1, | |
251 | "FFF4: Data transfer underlength error"}, | |
252 | {0x04338000, 1, 1, | |
253 | "FFF4: Data transfer overlength error"}, | |
254 | {0x043E0100, 0, 1, | |
255 | "3400: Logical unit failure"}, | |
256 | {0x04408500, 0, 1, | |
257 | "FFF4: Device microcode is corrupt"}, | |
258 | {0x04418000, 1, 1, | |
259 | "8150: PCI bus error"}, | |
260 | {0x04430000, 1, 0, | |
261 | "Unsupported device bus message received"}, | |
262 | {0x04440000, 1, 1, | |
263 | "FFF4: Disk device problem"}, | |
264 | {0x04448200, 1, 1, | |
265 | "8150: Permanent IOA failure"}, | |
266 | {0x04448300, 0, 1, | |
267 | "3010: Disk device returned wrong response to IOA"}, | |
268 | {0x04448400, 0, 1, | |
269 | "8151: IOA microcode error"}, | |
270 | {0x04448500, 0, 0, | |
271 | "Device bus status error"}, | |
272 | {0x04448600, 0, 1, | |
273 | "8157: IOA error requiring IOA reset to recover"}, | |
274 | {0x04490000, 0, 0, | |
275 | "Message reject received from the device"}, | |
276 | {0x04449200, 0, 1, | |
277 | "8008: A permanent cache battery pack failure occurred"}, | |
278 | {0x0444A000, 0, 1, | |
279 | "9090: Disk unit has been modified after the last known status"}, | |
280 | {0x0444A200, 0, 1, | |
281 | "9081: IOA detected device error"}, | |
282 | {0x0444A300, 0, 1, | |
283 | "9082: IOA detected device error"}, | |
284 | {0x044A0000, 1, 1, | |
285 | "3110: Device bus error, message or command phase"}, | |
286 | {0x04670400, 0, 1, | |
287 | "9091: Incorrect hardware configuration change has been detected"}, | |
288 | {0x046E0000, 0, 1, | |
289 | "FFF4: Command to logical unit failed"}, | |
290 | {0x05240000, 1, 0, | |
291 | "Illegal request, invalid request type or request packet"}, | |
292 | {0x05250000, 0, 0, | |
293 | "Illegal request, invalid resource handle"}, | |
294 | {0x05260000, 0, 0, | |
295 | "Illegal request, invalid field in parameter list"}, | |
296 | {0x05260100, 0, 0, | |
297 | "Illegal request, parameter not supported"}, | |
298 | {0x05260200, 0, 0, | |
299 | "Illegal request, parameter value invalid"}, | |
300 | {0x052C0000, 0, 0, | |
301 | "Illegal request, command sequence error"}, | |
302 | {0x06040500, 0, 1, | |
303 | "9031: Array protection temporarily suspended, protection resuming"}, | |
304 | {0x06040600, 0, 1, | |
305 | "9040: Array protection temporarily suspended, protection resuming"}, | |
306 | {0x06290000, 0, 1, | |
307 | "FFFB: SCSI bus was reset"}, | |
308 | {0x06290500, 0, 0, | |
309 | "FFFE: SCSI bus transition to single ended"}, | |
310 | {0x06290600, 0, 0, | |
311 | "FFFE: SCSI bus transition to LVD"}, | |
312 | {0x06298000, 0, 1, | |
313 | "FFFB: SCSI bus was reset by another initiator"}, | |
314 | {0x063F0300, 0, 1, | |
315 | "3029: A device replacement has occurred"}, | |
316 | {0x064C8000, 0, 1, | |
317 | "9051: IOA cache data exists for a missing or failed device"}, | |
318 | {0x06670100, 0, 1, | |
319 | "9025: Disk unit is not supported at its physical location"}, | |
320 | {0x06670600, 0, 1, | |
321 | "3020: IOA detected a SCSI bus configuration error"}, | |
322 | {0x06678000, 0, 1, | |
323 | "3150: SCSI bus configuration error"}, | |
324 | {0x06690200, 0, 1, | |
325 | "9041: Array protection temporarily suspended"}, | |
326 | {0x06698200, 0, 1, | |
327 | "9042: Corrupt array parity detected on specified device"}, | |
328 | {0x066B0200, 0, 1, | |
329 | "9030: Array no longer protected due to missing or failed disk unit"}, | |
330 | {0x066B8200, 0, 1, | |
331 | "9032: Array exposed but still protected"}, | |
332 | {0x07270000, 0, 0, | |
333 | "Failure due to other device"}, | |
334 | {0x07278000, 0, 1, | |
335 | "9008: IOA does not support functions expected by devices"}, | |
336 | {0x07278100, 0, 1, | |
337 | "9010: Cache data associated with attached devices cannot be found"}, | |
338 | {0x07278200, 0, 1, | |
339 | "9011: Cache data belongs to devices other than those attached"}, | |
340 | {0x07278400, 0, 1, | |
341 | "9020: Array missing 2 or more devices with only 1 device present"}, | |
342 | {0x07278500, 0, 1, | |
343 | "9021: Array missing 2 or more devices with 2 or more devices present"}, | |
344 | {0x07278600, 0, 1, | |
345 | "9022: Exposed array is missing a required device"}, | |
346 | {0x07278700, 0, 1, | |
347 | "9023: Array member(s) not at required physical locations"}, | |
348 | {0x07278800, 0, 1, | |
349 | "9024: Array not functional due to present hardware configuration"}, | |
350 | {0x07278900, 0, 1, | |
351 | "9026: Array not functional due to present hardware configuration"}, | |
352 | {0x07278A00, 0, 1, | |
353 | "9027: Array is missing a device and parity is out of sync"}, | |
354 | {0x07278B00, 0, 1, | |
355 | "9028: Maximum number of arrays already exist"}, | |
356 | {0x07278C00, 0, 1, | |
357 | "9050: Required cache data cannot be located for a disk unit"}, | |
358 | {0x07278D00, 0, 1, | |
359 | "9052: Cache data exists for a device that has been modified"}, | |
360 | {0x07278F00, 0, 1, | |
361 | "9054: IOA resources not available due to previous problems"}, | |
362 | {0x07279100, 0, 1, | |
363 | "9092: Disk unit requires initialization before use"}, | |
364 | {0x07279200, 0, 1, | |
365 | "9029: Incorrect hardware configuration change has been detected"}, | |
366 | {0x07279600, 0, 1, | |
367 | "9060: One or more disk pairs are missing from an array"}, | |
368 | {0x07279700, 0, 1, | |
369 | "9061: One or more disks are missing from an array"}, | |
370 | {0x07279800, 0, 1, | |
371 | "9062: One or more disks are missing from an array"}, | |
372 | {0x07279900, 0, 1, | |
373 | "9063: Maximum number of functional arrays has been exceeded"}, | |
374 | {0x0B260000, 0, 0, | |
375 | "Aborted command, invalid descriptor"}, | |
376 | {0x0B5A0000, 0, 0, | |
377 | "Command terminated by host"} | |
378 | }; | |
379 | ||
380 | static const struct ipr_ses_table_entry ipr_ses_table[] = { | |
381 | { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, | |
382 | { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, | |
383 | { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ | |
384 | { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ | |
385 | { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ | |
386 | { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ | |
387 | { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, | |
388 | { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, | |
389 | { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, | |
390 | { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, | |
391 | { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, | |
392 | { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, | |
393 | { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } | |
394 | }; | |
395 | ||
396 | /* | |
397 | * Function Prototypes | |
398 | */ | |
399 | static int ipr_reset_alert(struct ipr_cmnd *); | |
400 | static void ipr_process_ccn(struct ipr_cmnd *); | |
401 | static void ipr_process_error(struct ipr_cmnd *); | |
402 | static void ipr_reset_ioa_job(struct ipr_cmnd *); | |
403 | static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, | |
404 | enum ipr_shutdown_type); | |
405 | ||
406 | #ifdef CONFIG_SCSI_IPR_TRACE | |
407 | /** | |
408 | * ipr_trc_hook - Add a trace entry to the driver trace | |
409 | * @ipr_cmd: ipr command struct | |
410 | * @type: trace type | |
411 | * @add_data: additional data | |
412 | * | |
413 | * Return value: | |
414 | * none | |
415 | **/ | |
416 | static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, | |
417 | u8 type, u32 add_data) | |
418 | { | |
419 | struct ipr_trace_entry *trace_entry; | |
420 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
421 | ||
422 | trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++]; | |
423 | trace_entry->time = jiffies; | |
424 | trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; | |
425 | trace_entry->type = type; | |
426 | trace_entry->cmd_index = ipr_cmd->cmd_index; | |
427 | trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; | |
428 | trace_entry->u.add_data = add_data; | |
429 | } | |
430 | #else | |
431 | #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0) | |
432 | #endif | |
433 | ||
434 | /** | |
435 | * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse | |
436 | * @ipr_cmd: ipr command struct | |
437 | * | |
438 | * Return value: | |
439 | * none | |
440 | **/ | |
441 | static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) | |
442 | { | |
443 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; | |
444 | struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; | |
445 | ||
446 | memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); | |
447 | ioarcb->write_data_transfer_length = 0; | |
448 | ioarcb->read_data_transfer_length = 0; | |
449 | ioarcb->write_ioadl_len = 0; | |
450 | ioarcb->read_ioadl_len = 0; | |
451 | ioasa->ioasc = 0; | |
452 | ioasa->residual_data_len = 0; | |
453 | ||
454 | ipr_cmd->scsi_cmd = NULL; | |
455 | ipr_cmd->sense_buffer[0] = 0; | |
456 | ipr_cmd->dma_use_sg = 0; | |
457 | } | |
458 | ||
459 | /** | |
460 | * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block | |
461 | * @ipr_cmd: ipr command struct | |
462 | * | |
463 | * Return value: | |
464 | * none | |
465 | **/ | |
466 | static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd) | |
467 | { | |
468 | ipr_reinit_ipr_cmnd(ipr_cmd); | |
469 | ipr_cmd->u.scratch = 0; | |
470 | ipr_cmd->sibling = NULL; | |
471 | init_timer(&ipr_cmd->timer); | |
472 | } | |
473 | ||
474 | /** | |
475 | * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block | |
476 | * @ioa_cfg: ioa config struct | |
477 | * | |
478 | * Return value: | |
479 | * pointer to ipr command struct | |
480 | **/ | |
481 | static | |
482 | struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) | |
483 | { | |
484 | struct ipr_cmnd *ipr_cmd; | |
485 | ||
486 | ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue); | |
487 | list_del(&ipr_cmd->queue); | |
488 | ipr_init_ipr_cmnd(ipr_cmd); | |
489 | ||
490 | return ipr_cmd; | |
491 | } | |
492 | ||
493 | /** | |
494 | * ipr_unmap_sglist - Unmap scatterlist if mapped | |
495 | * @ioa_cfg: ioa config struct | |
496 | * @ipr_cmd: ipr command struct | |
497 | * | |
498 | * Return value: | |
499 | * nothing | |
500 | **/ | |
501 | static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg, | |
502 | struct ipr_cmnd *ipr_cmd) | |
503 | { | |
504 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; | |
505 | ||
506 | if (ipr_cmd->dma_use_sg) { | |
507 | if (scsi_cmd->use_sg > 0) { | |
508 | pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer, | |
509 | scsi_cmd->use_sg, | |
510 | scsi_cmd->sc_data_direction); | |
511 | } else { | |
512 | pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle, | |
513 | scsi_cmd->request_bufflen, | |
514 | scsi_cmd->sc_data_direction); | |
515 | } | |
516 | } | |
517 | } | |
518 | ||
519 | /** | |
520 | * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts | |
521 | * @ioa_cfg: ioa config struct | |
522 | * @clr_ints: interrupts to clear | |
523 | * | |
524 | * This function masks all interrupts on the adapter, then clears the | |
525 | * interrupts specified in the mask | |
526 | * | |
527 | * Return value: | |
528 | * none | |
529 | **/ | |
530 | static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, | |
531 | u32 clr_ints) | |
532 | { | |
533 | volatile u32 int_reg; | |
534 | ||
535 | /* Stop new interrupts */ | |
536 | ioa_cfg->allow_interrupts = 0; | |
537 | ||
538 | /* Set interrupt mask to stop all new interrupts */ | |
539 | writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); | |
540 | ||
541 | /* Clear any pending interrupts */ | |
542 | writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg); | |
543 | int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); | |
544 | } | |
545 | ||
546 | /** | |
547 | * ipr_save_pcix_cmd_reg - Save PCI-X command register | |
548 | * @ioa_cfg: ioa config struct | |
549 | * | |
550 | * Return value: | |
551 | * 0 on success / -EIO on failure | |
552 | **/ | |
553 | static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) | |
554 | { | |
555 | int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); | |
556 | ||
557 | if (pcix_cmd_reg == 0) { | |
558 | dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); | |
559 | return -EIO; | |
560 | } | |
561 | ||
562 | if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, | |
563 | &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { | |
564 | dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); | |
565 | return -EIO; | |
566 | } | |
567 | ||
568 | ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; | |
569 | return 0; | |
570 | } | |
571 | ||
572 | /** | |
573 | * ipr_set_pcix_cmd_reg - Setup 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_set_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) { | |
584 | if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, | |
585 | ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { | |
586 | dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); | |
587 | return -EIO; | |
588 | } | |
589 | } else { | |
590 | dev_err(&ioa_cfg->pdev->dev, | |
591 | "Failed to setup PCI-X command register\n"); | |
592 | return -EIO; | |
593 | } | |
594 | ||
595 | return 0; | |
596 | } | |
597 | ||
598 | /** | |
599 | * ipr_scsi_eh_done - mid-layer done function for aborted ops | |
600 | * @ipr_cmd: ipr command struct | |
601 | * | |
602 | * This function is invoked by the interrupt handler for | |
603 | * ops generated by the SCSI mid-layer which are being aborted. | |
604 | * | |
605 | * Return value: | |
606 | * none | |
607 | **/ | |
608 | static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) | |
609 | { | |
610 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
611 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; | |
612 | ||
613 | scsi_cmd->result |= (DID_ERROR << 16); | |
614 | ||
615 | ipr_unmap_sglist(ioa_cfg, ipr_cmd); | |
616 | scsi_cmd->scsi_done(scsi_cmd); | |
617 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
618 | } | |
619 | ||
620 | /** | |
621 | * ipr_fail_all_ops - Fails all outstanding ops. | |
622 | * @ioa_cfg: ioa config struct | |
623 | * | |
624 | * This function fails all outstanding ops. | |
625 | * | |
626 | * Return value: | |
627 | * none | |
628 | **/ | |
629 | static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) | |
630 | { | |
631 | struct ipr_cmnd *ipr_cmd, *temp; | |
632 | ||
633 | ENTER; | |
634 | list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) { | |
635 | list_del(&ipr_cmd->queue); | |
636 | ||
637 | ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); | |
638 | ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID); | |
639 | ||
640 | if (ipr_cmd->scsi_cmd) | |
641 | ipr_cmd->done = ipr_scsi_eh_done; | |
642 | ||
643 | ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET); | |
644 | del_timer(&ipr_cmd->timer); | |
645 | ipr_cmd->done(ipr_cmd); | |
646 | } | |
647 | ||
648 | LEAVE; | |
649 | } | |
650 | ||
651 | /** | |
652 | * ipr_do_req - Send driver initiated requests. | |
653 | * @ipr_cmd: ipr command struct | |
654 | * @done: done function | |
655 | * @timeout_func: timeout function | |
656 | * @timeout: timeout value | |
657 | * | |
658 | * This function sends the specified command to the adapter with the | |
659 | * timeout given. The done function is invoked on command completion. | |
660 | * | |
661 | * Return value: | |
662 | * none | |
663 | **/ | |
664 | static void ipr_do_req(struct ipr_cmnd *ipr_cmd, | |
665 | void (*done) (struct ipr_cmnd *), | |
666 | void (*timeout_func) (struct ipr_cmnd *), u32 timeout) | |
667 | { | |
668 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
669 | ||
670 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); | |
671 | ||
672 | ipr_cmd->done = done; | |
673 | ||
674 | ipr_cmd->timer.data = (unsigned long) ipr_cmd; | |
675 | ipr_cmd->timer.expires = jiffies + timeout; | |
676 | ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func; | |
677 | ||
678 | add_timer(&ipr_cmd->timer); | |
679 | ||
680 | ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); | |
681 | ||
682 | mb(); | |
683 | writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), | |
684 | ioa_cfg->regs.ioarrin_reg); | |
685 | } | |
686 | ||
687 | /** | |
688 | * ipr_internal_cmd_done - Op done function for an internally generated op. | |
689 | * @ipr_cmd: ipr command struct | |
690 | * | |
691 | * This function is the op done function for an internally generated, | |
692 | * blocking op. It simply wakes the sleeping thread. | |
693 | * | |
694 | * Return value: | |
695 | * none | |
696 | **/ | |
697 | static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) | |
698 | { | |
699 | if (ipr_cmd->sibling) | |
700 | ipr_cmd->sibling = NULL; | |
701 | else | |
702 | complete(&ipr_cmd->completion); | |
703 | } | |
704 | ||
705 | /** | |
706 | * ipr_send_blocking_cmd - Send command and sleep on its completion. | |
707 | * @ipr_cmd: ipr command struct | |
708 | * @timeout_func: function to invoke if command times out | |
709 | * @timeout: timeout | |
710 | * | |
711 | * Return value: | |
712 | * none | |
713 | **/ | |
714 | static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, | |
715 | void (*timeout_func) (struct ipr_cmnd *ipr_cmd), | |
716 | u32 timeout) | |
717 | { | |
718 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
719 | ||
720 | init_completion(&ipr_cmd->completion); | |
721 | ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); | |
722 | ||
723 | spin_unlock_irq(ioa_cfg->host->host_lock); | |
724 | wait_for_completion(&ipr_cmd->completion); | |
725 | spin_lock_irq(ioa_cfg->host->host_lock); | |
726 | } | |
727 | ||
728 | /** | |
729 | * ipr_send_hcam - Send an HCAM to the adapter. | |
730 | * @ioa_cfg: ioa config struct | |
731 | * @type: HCAM type | |
732 | * @hostrcb: hostrcb struct | |
733 | * | |
734 | * This function will send a Host Controlled Async command to the adapter. | |
735 | * If HCAMs are currently not allowed to be issued to the adapter, it will | |
736 | * place the hostrcb on the free queue. | |
737 | * | |
738 | * Return value: | |
739 | * none | |
740 | **/ | |
741 | static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, | |
742 | struct ipr_hostrcb *hostrcb) | |
743 | { | |
744 | struct ipr_cmnd *ipr_cmd; | |
745 | struct ipr_ioarcb *ioarcb; | |
746 | ||
747 | if (ioa_cfg->allow_cmds) { | |
748 | ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); | |
749 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); | |
750 | list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); | |
751 | ||
752 | ipr_cmd->u.hostrcb = hostrcb; | |
753 | ioarcb = &ipr_cmd->ioarcb; | |
754 | ||
755 | ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); | |
756 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; | |
757 | ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; | |
758 | ioarcb->cmd_pkt.cdb[1] = type; | |
759 | ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; | |
760 | ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; | |
761 | ||
762 | ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam)); | |
763 | ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); | |
764 | ipr_cmd->ioadl[0].flags_and_data_len = | |
765 | cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam)); | |
766 | ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma); | |
767 | ||
768 | if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) | |
769 | ipr_cmd->done = ipr_process_ccn; | |
770 | else | |
771 | ipr_cmd->done = ipr_process_error; | |
772 | ||
773 | ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); | |
774 | ||
775 | mb(); | |
776 | writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), | |
777 | ioa_cfg->regs.ioarrin_reg); | |
778 | } else { | |
779 | list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); | |
780 | } | |
781 | } | |
782 | ||
783 | /** | |
784 | * ipr_init_res_entry - Initialize a resource entry struct. | |
785 | * @res: resource entry struct | |
786 | * | |
787 | * Return value: | |
788 | * none | |
789 | **/ | |
790 | static void ipr_init_res_entry(struct ipr_resource_entry *res) | |
791 | { | |
792 | res->needs_sync_complete = 1; | |
793 | res->in_erp = 0; | |
794 | res->add_to_ml = 0; | |
795 | res->del_from_ml = 0; | |
796 | res->resetting_device = 0; | |
797 | res->sdev = NULL; | |
798 | } | |
799 | ||
800 | /** | |
801 | * ipr_handle_config_change - Handle a config change from the adapter | |
802 | * @ioa_cfg: ioa config struct | |
803 | * @hostrcb: hostrcb | |
804 | * | |
805 | * Return value: | |
806 | * none | |
807 | **/ | |
808 | static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, | |
809 | struct ipr_hostrcb *hostrcb) | |
810 | { | |
811 | struct ipr_resource_entry *res = NULL; | |
812 | struct ipr_config_table_entry *cfgte; | |
813 | u32 is_ndn = 1; | |
814 | ||
815 | cfgte = &hostrcb->hcam.u.ccn.cfgte; | |
816 | ||
817 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { | |
818 | if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr, | |
819 | sizeof(cfgte->res_addr))) { | |
820 | is_ndn = 0; | |
821 | break; | |
822 | } | |
823 | } | |
824 | ||
825 | if (is_ndn) { | |
826 | if (list_empty(&ioa_cfg->free_res_q)) { | |
827 | ipr_send_hcam(ioa_cfg, | |
828 | IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, | |
829 | hostrcb); | |
830 | return; | |
831 | } | |
832 | ||
833 | res = list_entry(ioa_cfg->free_res_q.next, | |
834 | struct ipr_resource_entry, queue); | |
835 | ||
836 | list_del(&res->queue); | |
837 | ipr_init_res_entry(res); | |
838 | list_add_tail(&res->queue, &ioa_cfg->used_res_q); | |
839 | } | |
840 | ||
841 | memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); | |
842 | ||
843 | if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { | |
844 | if (res->sdev) { | |
845 | res->sdev->hostdata = NULL; | |
846 | res->del_from_ml = 1; | |
847 | if (ioa_cfg->allow_ml_add_del) | |
848 | schedule_work(&ioa_cfg->work_q); | |
849 | } else | |
850 | list_move_tail(&res->queue, &ioa_cfg->free_res_q); | |
851 | } else if (!res->sdev) { | |
852 | res->add_to_ml = 1; | |
853 | if (ioa_cfg->allow_ml_add_del) | |
854 | schedule_work(&ioa_cfg->work_q); | |
855 | } | |
856 | ||
857 | ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); | |
858 | } | |
859 | ||
860 | /** | |
861 | * ipr_process_ccn - Op done function for a CCN. | |
862 | * @ipr_cmd: ipr command struct | |
863 | * | |
864 | * This function is the op done function for a configuration | |
865 | * change notification host controlled async from the adapter. | |
866 | * | |
867 | * Return value: | |
868 | * none | |
869 | **/ | |
870 | static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) | |
871 | { | |
872 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
873 | struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; | |
874 | u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
875 | ||
876 | list_del(&hostrcb->queue); | |
877 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
878 | ||
879 | if (ioasc) { | |
880 | if (ioasc != IPR_IOASC_IOA_WAS_RESET) | |
881 | dev_err(&ioa_cfg->pdev->dev, | |
882 | "Host RCB failed with IOASC: 0x%08X\n", ioasc); | |
883 | ||
884 | ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); | |
885 | } else { | |
886 | ipr_handle_config_change(ioa_cfg, hostrcb); | |
887 | } | |
888 | } | |
889 | ||
890 | /** | |
891 | * ipr_log_vpd - Log the passed VPD to the error log. | |
892 | * @vpids: vendor/product id struct | |
893 | * @serial_num: serial number string | |
894 | * | |
895 | * Return value: | |
896 | * none | |
897 | **/ | |
898 | static void ipr_log_vpd(struct ipr_std_inq_vpids *vpids, u8 *serial_num) | |
899 | { | |
900 | char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN | |
901 | + IPR_SERIAL_NUM_LEN]; | |
902 | ||
903 | memcpy(buffer, vpids->vendor_id, IPR_VENDOR_ID_LEN); | |
904 | memcpy(buffer + IPR_VENDOR_ID_LEN, vpids->product_id, | |
905 | IPR_PROD_ID_LEN); | |
906 | buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; | |
907 | ipr_err("Vendor/Product ID: %s\n", buffer); | |
908 | ||
909 | memcpy(buffer, serial_num, IPR_SERIAL_NUM_LEN); | |
910 | buffer[IPR_SERIAL_NUM_LEN] = '\0'; | |
911 | ipr_err(" Serial Number: %s\n", buffer); | |
912 | } | |
913 | ||
914 | /** | |
915 | * ipr_log_cache_error - Log a cache error. | |
916 | * @ioa_cfg: ioa config struct | |
917 | * @hostrcb: hostrcb struct | |
918 | * | |
919 | * Return value: | |
920 | * none | |
921 | **/ | |
922 | static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, | |
923 | struct ipr_hostrcb *hostrcb) | |
924 | { | |
925 | struct ipr_hostrcb_type_02_error *error = | |
926 | &hostrcb->hcam.u.error.u.type_02_error; | |
927 | ||
928 | ipr_err("-----Current Configuration-----\n"); | |
929 | ipr_err("Cache Directory Card Information:\n"); | |
930 | ipr_log_vpd(&error->ioa_vpids, error->ioa_sn); | |
931 | ipr_err("Adapter Card Information:\n"); | |
932 | ipr_log_vpd(&error->cfc_vpids, error->cfc_sn); | |
933 | ||
934 | ipr_err("-----Expected Configuration-----\n"); | |
935 | ipr_err("Cache Directory Card Information:\n"); | |
936 | ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpids, | |
937 | error->ioa_last_attached_to_cfc_sn); | |
938 | ipr_err("Adapter Card Information:\n"); | |
939 | ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpids, | |
940 | error->cfc_last_attached_to_ioa_sn); | |
941 | ||
942 | ipr_err("Additional IOA Data: %08X %08X %08X\n", | |
943 | be32_to_cpu(error->ioa_data[0]), | |
944 | be32_to_cpu(error->ioa_data[1]), | |
945 | be32_to_cpu(error->ioa_data[2])); | |
946 | } | |
947 | ||
948 | /** | |
949 | * ipr_log_config_error - Log a configuration error. | |
950 | * @ioa_cfg: ioa config struct | |
951 | * @hostrcb: hostrcb struct | |
952 | * | |
953 | * Return value: | |
954 | * none | |
955 | **/ | |
956 | static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, | |
957 | struct ipr_hostrcb *hostrcb) | |
958 | { | |
959 | int errors_logged, i; | |
960 | struct ipr_hostrcb_device_data_entry *dev_entry; | |
961 | struct ipr_hostrcb_type_03_error *error; | |
962 | ||
963 | error = &hostrcb->hcam.u.error.u.type_03_error; | |
964 | errors_logged = be32_to_cpu(error->errors_logged); | |
965 | ||
966 | ipr_err("Device Errors Detected/Logged: %d/%d\n", | |
967 | be32_to_cpu(error->errors_detected), errors_logged); | |
968 | ||
969 | dev_entry = error->dev_entry; | |
970 | ||
971 | for (i = 0; i < errors_logged; i++, dev_entry++) { | |
972 | ipr_err_separator; | |
973 | ||
974 | if (dev_entry->dev_res_addr.bus >= IPR_MAX_NUM_BUSES) { | |
975 | ipr_err("Device %d: missing\n", i + 1); | |
976 | } else { | |
977 | ipr_err("Device %d: %d:%d:%d:%d\n", i + 1, | |
978 | ioa_cfg->host->host_no, dev_entry->dev_res_addr.bus, | |
979 | dev_entry->dev_res_addr.target, dev_entry->dev_res_addr.lun); | |
980 | } | |
981 | ipr_log_vpd(&dev_entry->dev_vpids, dev_entry->dev_sn); | |
982 | ||
983 | ipr_err("-----New Device Information-----\n"); | |
984 | ipr_log_vpd(&dev_entry->new_dev_vpids, dev_entry->new_dev_sn); | |
985 | ||
986 | ipr_err("Cache Directory Card Information:\n"); | |
987 | ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpids, | |
988 | dev_entry->ioa_last_with_dev_sn); | |
989 | ||
990 | ipr_err("Adapter Card Information:\n"); | |
991 | ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpids, | |
992 | dev_entry->cfc_last_with_dev_sn); | |
993 | ||
994 | ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", | |
995 | be32_to_cpu(dev_entry->ioa_data[0]), | |
996 | be32_to_cpu(dev_entry->ioa_data[1]), | |
997 | be32_to_cpu(dev_entry->ioa_data[2]), | |
998 | be32_to_cpu(dev_entry->ioa_data[3]), | |
999 | be32_to_cpu(dev_entry->ioa_data[4])); | |
1000 | } | |
1001 | } | |
1002 | ||
1003 | /** | |
1004 | * ipr_log_array_error - Log an array configuration error. | |
1005 | * @ioa_cfg: ioa config struct | |
1006 | * @hostrcb: hostrcb struct | |
1007 | * | |
1008 | * Return value: | |
1009 | * none | |
1010 | **/ | |
1011 | static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, | |
1012 | struct ipr_hostrcb *hostrcb) | |
1013 | { | |
1014 | int i; | |
1015 | struct ipr_hostrcb_type_04_error *error; | |
1016 | struct ipr_hostrcb_array_data_entry *array_entry; | |
1017 | const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; | |
1018 | ||
1019 | error = &hostrcb->hcam.u.error.u.type_04_error; | |
1020 | ||
1021 | ipr_err_separator; | |
1022 | ||
1023 | ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", | |
1024 | error->protection_level, | |
1025 | ioa_cfg->host->host_no, | |
1026 | error->last_func_vset_res_addr.bus, | |
1027 | error->last_func_vset_res_addr.target, | |
1028 | error->last_func_vset_res_addr.lun); | |
1029 | ||
1030 | ipr_err_separator; | |
1031 | ||
1032 | array_entry = error->array_member; | |
1033 | ||
1034 | for (i = 0; i < 18; i++) { | |
1035 | if (!memcmp(array_entry->serial_num, zero_sn, IPR_SERIAL_NUM_LEN)) | |
1036 | continue; | |
1037 | ||
1038 | if (be32_to_cpu(error->exposed_mode_adn) == i) { | |
1039 | ipr_err("Exposed Array Member %d:\n", i); | |
1040 | } else { | |
1041 | ipr_err("Array Member %d:\n", i); | |
1042 | } | |
1043 | ||
1044 | ipr_log_vpd(&array_entry->vpids, array_entry->serial_num); | |
1045 | ||
1046 | if (array_entry->dev_res_addr.bus >= IPR_MAX_NUM_BUSES) { | |
1047 | ipr_err("Current Location: unknown\n"); | |
1048 | } else { | |
1049 | ipr_err("Current Location: %d:%d:%d:%d\n", | |
1050 | ioa_cfg->host->host_no, | |
1051 | array_entry->dev_res_addr.bus, | |
1052 | array_entry->dev_res_addr.target, | |
1053 | array_entry->dev_res_addr.lun); | |
1054 | } | |
1055 | ||
1b69f645 | 1056 | if (array_entry->expected_dev_res_addr.bus >= IPR_MAX_NUM_BUSES) { |
1da177e4 LT |
1057 | ipr_err("Expected Location: unknown\n"); |
1058 | } else { | |
1059 | ipr_err("Expected Location: %d:%d:%d:%d\n", | |
1060 | ioa_cfg->host->host_no, | |
1061 | array_entry->expected_dev_res_addr.bus, | |
1062 | array_entry->expected_dev_res_addr.target, | |
1063 | array_entry->expected_dev_res_addr.lun); | |
1064 | } | |
1065 | ||
1066 | ipr_err_separator; | |
1067 | ||
1068 | if (i == 9) | |
1069 | array_entry = error->array_member2; | |
1070 | else | |
1071 | array_entry++; | |
1072 | } | |
1073 | } | |
1074 | ||
1075 | /** | |
1076 | * ipr_log_generic_error - Log an adapter error. | |
1077 | * @ioa_cfg: ioa config struct | |
1078 | * @hostrcb: hostrcb struct | |
1079 | * | |
1080 | * Return value: | |
1081 | * none | |
1082 | **/ | |
1083 | static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, | |
1084 | struct ipr_hostrcb *hostrcb) | |
1085 | { | |
1086 | int i; | |
1087 | int ioa_data_len = be32_to_cpu(hostrcb->hcam.length); | |
1088 | ||
1089 | if (ioa_data_len == 0) | |
1090 | return; | |
1091 | ||
1092 | ipr_err("IOA Error Data:\n"); | |
1093 | ipr_err("Offset 0 1 2 3 4 5 6 7 8 9 A B C D E F\n"); | |
1094 | ||
1095 | for (i = 0; i < ioa_data_len / 4; i += 4) { | |
1096 | ipr_err("%08X: %08X %08X %08X %08X\n", i*4, | |
1097 | be32_to_cpu(hostrcb->hcam.u.raw.data[i]), | |
1098 | be32_to_cpu(hostrcb->hcam.u.raw.data[i+1]), | |
1099 | be32_to_cpu(hostrcb->hcam.u.raw.data[i+2]), | |
1100 | be32_to_cpu(hostrcb->hcam.u.raw.data[i+3])); | |
1101 | } | |
1102 | } | |
1103 | ||
1104 | /** | |
1105 | * ipr_get_error - Find the specfied IOASC in the ipr_error_table. | |
1106 | * @ioasc: IOASC | |
1107 | * | |
1108 | * This function will return the index of into the ipr_error_table | |
1109 | * for the specified IOASC. If the IOASC is not in the table, | |
1110 | * 0 will be returned, which points to the entry used for unknown errors. | |
1111 | * | |
1112 | * Return value: | |
1113 | * index into the ipr_error_table | |
1114 | **/ | |
1115 | static u32 ipr_get_error(u32 ioasc) | |
1116 | { | |
1117 | int i; | |
1118 | ||
1119 | for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) | |
1120 | if (ipr_error_table[i].ioasc == ioasc) | |
1121 | return i; | |
1122 | ||
1123 | return 0; | |
1124 | } | |
1125 | ||
1126 | /** | |
1127 | * ipr_handle_log_data - Log an adapter error. | |
1128 | * @ioa_cfg: ioa config struct | |
1129 | * @hostrcb: hostrcb struct | |
1130 | * | |
1131 | * This function logs an adapter error to the system. | |
1132 | * | |
1133 | * Return value: | |
1134 | * none | |
1135 | **/ | |
1136 | static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, | |
1137 | struct ipr_hostrcb *hostrcb) | |
1138 | { | |
1139 | u32 ioasc; | |
1140 | int error_index; | |
1141 | ||
1142 | if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) | |
1143 | return; | |
1144 | ||
1145 | if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) | |
1146 | dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); | |
1147 | ||
1148 | ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc); | |
1149 | ||
1150 | if (ioasc == IPR_IOASC_BUS_WAS_RESET || | |
1151 | ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) { | |
1152 | /* Tell the midlayer we had a bus reset so it will handle the UA properly */ | |
1153 | scsi_report_bus_reset(ioa_cfg->host, | |
1154 | hostrcb->hcam.u.error.failing_dev_res_addr.bus); | |
1155 | } | |
1156 | ||
1157 | error_index = ipr_get_error(ioasc); | |
1158 | ||
1159 | if (!ipr_error_table[error_index].log_hcam) | |
1160 | return; | |
1161 | ||
1162 | if (ipr_is_device(&hostrcb->hcam.u.error.failing_dev_res_addr)) { | |
1163 | ipr_res_err(ioa_cfg, hostrcb->hcam.u.error.failing_dev_res_addr, | |
1164 | "%s\n", ipr_error_table[error_index].error); | |
1165 | } else { | |
1166 | dev_err(&ioa_cfg->pdev->dev, "%s\n", | |
1167 | ipr_error_table[error_index].error); | |
1168 | } | |
1169 | ||
1170 | /* Set indication we have logged an error */ | |
1171 | ioa_cfg->errors_logged++; | |
1172 | ||
1173 | if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) | |
1174 | return; | |
1175 | ||
1176 | switch (hostrcb->hcam.overlay_id) { | |
1177 | case IPR_HOST_RCB_OVERLAY_ID_1: | |
1178 | ipr_log_generic_error(ioa_cfg, hostrcb); | |
1179 | break; | |
1180 | case IPR_HOST_RCB_OVERLAY_ID_2: | |
1181 | ipr_log_cache_error(ioa_cfg, hostrcb); | |
1182 | break; | |
1183 | case IPR_HOST_RCB_OVERLAY_ID_3: | |
1184 | ipr_log_config_error(ioa_cfg, hostrcb); | |
1185 | break; | |
1186 | case IPR_HOST_RCB_OVERLAY_ID_4: | |
1187 | case IPR_HOST_RCB_OVERLAY_ID_6: | |
1188 | ipr_log_array_error(ioa_cfg, hostrcb); | |
1189 | break; | |
1190 | case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: | |
1191 | ipr_log_generic_error(ioa_cfg, hostrcb); | |
1192 | break; | |
1193 | default: | |
1194 | dev_err(&ioa_cfg->pdev->dev, | |
1195 | "Unknown error received. Overlay ID: %d\n", | |
1196 | hostrcb->hcam.overlay_id); | |
1197 | break; | |
1198 | } | |
1199 | } | |
1200 | ||
1201 | /** | |
1202 | * ipr_process_error - Op done function for an adapter error log. | |
1203 | * @ipr_cmd: ipr command struct | |
1204 | * | |
1205 | * This function is the op done function for an error log host | |
1206 | * controlled async from the adapter. It will log the error and | |
1207 | * send the HCAM back to the adapter. | |
1208 | * | |
1209 | * Return value: | |
1210 | * none | |
1211 | **/ | |
1212 | static void ipr_process_error(struct ipr_cmnd *ipr_cmd) | |
1213 | { | |
1214 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
1215 | struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; | |
1216 | u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
1217 | ||
1218 | list_del(&hostrcb->queue); | |
1219 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
1220 | ||
1221 | if (!ioasc) { | |
1222 | ipr_handle_log_data(ioa_cfg, hostrcb); | |
1223 | } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) { | |
1224 | dev_err(&ioa_cfg->pdev->dev, | |
1225 | "Host RCB failed with IOASC: 0x%08X\n", ioasc); | |
1226 | } | |
1227 | ||
1228 | ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); | |
1229 | } | |
1230 | ||
1231 | /** | |
1232 | * ipr_timeout - An internally generated op has timed out. | |
1233 | * @ipr_cmd: ipr command struct | |
1234 | * | |
1235 | * This function blocks host requests and initiates an | |
1236 | * adapter reset. | |
1237 | * | |
1238 | * Return value: | |
1239 | * none | |
1240 | **/ | |
1241 | static void ipr_timeout(struct ipr_cmnd *ipr_cmd) | |
1242 | { | |
1243 | unsigned long lock_flags = 0; | |
1244 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
1245 | ||
1246 | ENTER; | |
1247 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1248 | ||
1249 | ioa_cfg->errors_logged++; | |
1250 | dev_err(&ioa_cfg->pdev->dev, | |
1251 | "Adapter being reset due to command timeout.\n"); | |
1252 | ||
1253 | if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) | |
1254 | ioa_cfg->sdt_state = GET_DUMP; | |
1255 | ||
1256 | if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) | |
1257 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); | |
1258 | ||
1259 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1260 | LEAVE; | |
1261 | } | |
1262 | ||
1263 | /** | |
1264 | * ipr_oper_timeout - Adapter timed out transitioning to operational | |
1265 | * @ipr_cmd: ipr command struct | |
1266 | * | |
1267 | * This function blocks host requests and initiates an | |
1268 | * adapter reset. | |
1269 | * | |
1270 | * Return value: | |
1271 | * none | |
1272 | **/ | |
1273 | static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) | |
1274 | { | |
1275 | unsigned long lock_flags = 0; | |
1276 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
1277 | ||
1278 | ENTER; | |
1279 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1280 | ||
1281 | ioa_cfg->errors_logged++; | |
1282 | dev_err(&ioa_cfg->pdev->dev, | |
1283 | "Adapter timed out transitioning to operational.\n"); | |
1284 | ||
1285 | if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) | |
1286 | ioa_cfg->sdt_state = GET_DUMP; | |
1287 | ||
1288 | if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { | |
1289 | if (ipr_fastfail) | |
1290 | ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; | |
1291 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); | |
1292 | } | |
1293 | ||
1294 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1295 | LEAVE; | |
1296 | } | |
1297 | ||
1298 | /** | |
1299 | * ipr_reset_reload - Reset/Reload the IOA | |
1300 | * @ioa_cfg: ioa config struct | |
1301 | * @shutdown_type: shutdown type | |
1302 | * | |
1303 | * This function resets the adapter and re-initializes it. | |
1304 | * This function assumes that all new host commands have been stopped. | |
1305 | * Return value: | |
1306 | * SUCCESS / FAILED | |
1307 | **/ | |
1308 | static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg, | |
1309 | enum ipr_shutdown_type shutdown_type) | |
1310 | { | |
1311 | if (!ioa_cfg->in_reset_reload) | |
1312 | ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); | |
1313 | ||
1314 | spin_unlock_irq(ioa_cfg->host->host_lock); | |
1315 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); | |
1316 | spin_lock_irq(ioa_cfg->host->host_lock); | |
1317 | ||
1318 | /* If we got hit with a host reset while we were already resetting | |
1319 | the adapter for some reason, and the reset failed. */ | |
1320 | if (ioa_cfg->ioa_is_dead) { | |
1321 | ipr_trace; | |
1322 | return FAILED; | |
1323 | } | |
1324 | ||
1325 | return SUCCESS; | |
1326 | } | |
1327 | ||
1328 | /** | |
1329 | * ipr_find_ses_entry - Find matching SES in SES table | |
1330 | * @res: resource entry struct of SES | |
1331 | * | |
1332 | * Return value: | |
1333 | * pointer to SES table entry / NULL on failure | |
1334 | **/ | |
1335 | static const struct ipr_ses_table_entry * | |
1336 | ipr_find_ses_entry(struct ipr_resource_entry *res) | |
1337 | { | |
1338 | int i, j, matches; | |
1339 | const struct ipr_ses_table_entry *ste = ipr_ses_table; | |
1340 | ||
1341 | for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { | |
1342 | for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { | |
1343 | if (ste->compare_product_id_byte[j] == 'X') { | |
1344 | if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j]) | |
1345 | matches++; | |
1346 | else | |
1347 | break; | |
1348 | } else | |
1349 | matches++; | |
1350 | } | |
1351 | ||
1352 | if (matches == IPR_PROD_ID_LEN) | |
1353 | return ste; | |
1354 | } | |
1355 | ||
1356 | return NULL; | |
1357 | } | |
1358 | ||
1359 | /** | |
1360 | * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus | |
1361 | * @ioa_cfg: ioa config struct | |
1362 | * @bus: SCSI bus | |
1363 | * @bus_width: bus width | |
1364 | * | |
1365 | * Return value: | |
1366 | * SCSI bus speed in units of 100KHz, 1600 is 160 MHz | |
1367 | * For a 2-byte wide SCSI bus, the maximum transfer speed is | |
1368 | * twice the maximum transfer rate (e.g. for a wide enabled bus, | |
1369 | * max 160MHz = max 320MB/sec). | |
1370 | **/ | |
1371 | static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) | |
1372 | { | |
1373 | struct ipr_resource_entry *res; | |
1374 | const struct ipr_ses_table_entry *ste; | |
1375 | u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); | |
1376 | ||
1377 | /* Loop through each config table entry in the config table buffer */ | |
1378 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { | |
1379 | if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data))) | |
1380 | continue; | |
1381 | ||
1382 | if (bus != res->cfgte.res_addr.bus) | |
1383 | continue; | |
1384 | ||
1385 | if (!(ste = ipr_find_ses_entry(res))) | |
1386 | continue; | |
1387 | ||
1388 | max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); | |
1389 | } | |
1390 | ||
1391 | return max_xfer_rate; | |
1392 | } | |
1393 | ||
1394 | /** | |
1395 | * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA | |
1396 | * @ioa_cfg: ioa config struct | |
1397 | * @max_delay: max delay in micro-seconds to wait | |
1398 | * | |
1399 | * Waits for an IODEBUG ACK from the IOA, doing busy looping. | |
1400 | * | |
1401 | * Return value: | |
1402 | * 0 on success / other on failure | |
1403 | **/ | |
1404 | static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) | |
1405 | { | |
1406 | volatile u32 pcii_reg; | |
1407 | int delay = 1; | |
1408 | ||
1409 | /* Read interrupt reg until IOA signals IO Debug Acknowledge */ | |
1410 | while (delay < max_delay) { | |
1411 | pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); | |
1412 | ||
1413 | if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) | |
1414 | return 0; | |
1415 | ||
1416 | /* udelay cannot be used if delay is more than a few milliseconds */ | |
1417 | if ((delay / 1000) > MAX_UDELAY_MS) | |
1418 | mdelay(delay / 1000); | |
1419 | else | |
1420 | udelay(delay); | |
1421 | ||
1422 | delay += delay; | |
1423 | } | |
1424 | return -EIO; | |
1425 | } | |
1426 | ||
1427 | /** | |
1428 | * ipr_get_ldump_data_section - Dump IOA memory | |
1429 | * @ioa_cfg: ioa config struct | |
1430 | * @start_addr: adapter address to dump | |
1431 | * @dest: destination kernel buffer | |
1432 | * @length_in_words: length to dump in 4 byte words | |
1433 | * | |
1434 | * Return value: | |
1435 | * 0 on success / -EIO on failure | |
1436 | **/ | |
1437 | static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, | |
1438 | u32 start_addr, | |
1439 | __be32 *dest, u32 length_in_words) | |
1440 | { | |
1441 | volatile u32 temp_pcii_reg; | |
1442 | int i, delay = 0; | |
1443 | ||
1444 | /* Write IOA interrupt reg starting LDUMP state */ | |
1445 | writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), | |
1446 | ioa_cfg->regs.set_uproc_interrupt_reg); | |
1447 | ||
1448 | /* Wait for IO debug acknowledge */ | |
1449 | if (ipr_wait_iodbg_ack(ioa_cfg, | |
1450 | IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { | |
1451 | dev_err(&ioa_cfg->pdev->dev, | |
1452 | "IOA dump long data transfer timeout\n"); | |
1453 | return -EIO; | |
1454 | } | |
1455 | ||
1456 | /* Signal LDUMP interlocked - clear IO debug ack */ | |
1457 | writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, | |
1458 | ioa_cfg->regs.clr_interrupt_reg); | |
1459 | ||
1460 | /* Write Mailbox with starting address */ | |
1461 | writel(start_addr, ioa_cfg->ioa_mailbox); | |
1462 | ||
1463 | /* Signal address valid - clear IOA Reset alert */ | |
1464 | writel(IPR_UPROCI_RESET_ALERT, | |
1465 | ioa_cfg->regs.clr_uproc_interrupt_reg); | |
1466 | ||
1467 | for (i = 0; i < length_in_words; i++) { | |
1468 | /* Wait for IO debug acknowledge */ | |
1469 | if (ipr_wait_iodbg_ack(ioa_cfg, | |
1470 | IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { | |
1471 | dev_err(&ioa_cfg->pdev->dev, | |
1472 | "IOA dump short data transfer timeout\n"); | |
1473 | return -EIO; | |
1474 | } | |
1475 | ||
1476 | /* Read data from mailbox and increment destination pointer */ | |
1477 | *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); | |
1478 | dest++; | |
1479 | ||
1480 | /* For all but the last word of data, signal data received */ | |
1481 | if (i < (length_in_words - 1)) { | |
1482 | /* Signal dump data received - Clear IO debug Ack */ | |
1483 | writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, | |
1484 | ioa_cfg->regs.clr_interrupt_reg); | |
1485 | } | |
1486 | } | |
1487 | ||
1488 | /* Signal end of block transfer. Set reset alert then clear IO debug ack */ | |
1489 | writel(IPR_UPROCI_RESET_ALERT, | |
1490 | ioa_cfg->regs.set_uproc_interrupt_reg); | |
1491 | ||
1492 | writel(IPR_UPROCI_IO_DEBUG_ALERT, | |
1493 | ioa_cfg->regs.clr_uproc_interrupt_reg); | |
1494 | ||
1495 | /* Signal dump data received - Clear IO debug Ack */ | |
1496 | writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, | |
1497 | ioa_cfg->regs.clr_interrupt_reg); | |
1498 | ||
1499 | /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ | |
1500 | while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { | |
1501 | temp_pcii_reg = | |
1502 | readl(ioa_cfg->regs.sense_uproc_interrupt_reg); | |
1503 | ||
1504 | if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) | |
1505 | return 0; | |
1506 | ||
1507 | udelay(10); | |
1508 | delay += 10; | |
1509 | } | |
1510 | ||
1511 | return 0; | |
1512 | } | |
1513 | ||
1514 | #ifdef CONFIG_SCSI_IPR_DUMP | |
1515 | /** | |
1516 | * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer | |
1517 | * @ioa_cfg: ioa config struct | |
1518 | * @pci_address: adapter address | |
1519 | * @length: length of data to copy | |
1520 | * | |
1521 | * Copy data from PCI adapter to kernel buffer. | |
1522 | * Note: length MUST be a 4 byte multiple | |
1523 | * Return value: | |
1524 | * 0 on success / other on failure | |
1525 | **/ | |
1526 | static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, | |
1527 | unsigned long pci_address, u32 length) | |
1528 | { | |
1529 | int bytes_copied = 0; | |
1530 | int cur_len, rc, rem_len, rem_page_len; | |
1531 | __be32 *page; | |
1532 | unsigned long lock_flags = 0; | |
1533 | struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; | |
1534 | ||
1535 | while (bytes_copied < length && | |
1536 | (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) { | |
1537 | if (ioa_dump->page_offset >= PAGE_SIZE || | |
1538 | ioa_dump->page_offset == 0) { | |
1539 | page = (__be32 *)__get_free_page(GFP_ATOMIC); | |
1540 | ||
1541 | if (!page) { | |
1542 | ipr_trace; | |
1543 | return bytes_copied; | |
1544 | } | |
1545 | ||
1546 | ioa_dump->page_offset = 0; | |
1547 | ioa_dump->ioa_data[ioa_dump->next_page_index] = page; | |
1548 | ioa_dump->next_page_index++; | |
1549 | } else | |
1550 | page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; | |
1551 | ||
1552 | rem_len = length - bytes_copied; | |
1553 | rem_page_len = PAGE_SIZE - ioa_dump->page_offset; | |
1554 | cur_len = min(rem_len, rem_page_len); | |
1555 | ||
1556 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1557 | if (ioa_cfg->sdt_state == ABORT_DUMP) { | |
1558 | rc = -EIO; | |
1559 | } else { | |
1560 | rc = ipr_get_ldump_data_section(ioa_cfg, | |
1561 | pci_address + bytes_copied, | |
1562 | &page[ioa_dump->page_offset / 4], | |
1563 | (cur_len / sizeof(u32))); | |
1564 | } | |
1565 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1566 | ||
1567 | if (!rc) { | |
1568 | ioa_dump->page_offset += cur_len; | |
1569 | bytes_copied += cur_len; | |
1570 | } else { | |
1571 | ipr_trace; | |
1572 | break; | |
1573 | } | |
1574 | schedule(); | |
1575 | } | |
1576 | ||
1577 | return bytes_copied; | |
1578 | } | |
1579 | ||
1580 | /** | |
1581 | * ipr_init_dump_entry_hdr - Initialize a dump entry header. | |
1582 | * @hdr: dump entry header struct | |
1583 | * | |
1584 | * Return value: | |
1585 | * nothing | |
1586 | **/ | |
1587 | static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) | |
1588 | { | |
1589 | hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; | |
1590 | hdr->num_elems = 1; | |
1591 | hdr->offset = sizeof(*hdr); | |
1592 | hdr->status = IPR_DUMP_STATUS_SUCCESS; | |
1593 | } | |
1594 | ||
1595 | /** | |
1596 | * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. | |
1597 | * @ioa_cfg: ioa config struct | |
1598 | * @driver_dump: driver dump struct | |
1599 | * | |
1600 | * Return value: | |
1601 | * nothing | |
1602 | **/ | |
1603 | static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, | |
1604 | struct ipr_driver_dump *driver_dump) | |
1605 | { | |
1606 | struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; | |
1607 | ||
1608 | ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); | |
1609 | driver_dump->ioa_type_entry.hdr.len = | |
1610 | sizeof(struct ipr_dump_ioa_type_entry) - | |
1611 | sizeof(struct ipr_dump_entry_header); | |
1612 | driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; | |
1613 | driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; | |
1614 | driver_dump->ioa_type_entry.type = ioa_cfg->type; | |
1615 | driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | | |
1616 | (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | | |
1617 | ucode_vpd->minor_release[1]; | |
1618 | driver_dump->hdr.num_entries++; | |
1619 | } | |
1620 | ||
1621 | /** | |
1622 | * ipr_dump_version_data - Fill in the driver version in the dump. | |
1623 | * @ioa_cfg: ioa config struct | |
1624 | * @driver_dump: driver dump struct | |
1625 | * | |
1626 | * Return value: | |
1627 | * nothing | |
1628 | **/ | |
1629 | static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, | |
1630 | struct ipr_driver_dump *driver_dump) | |
1631 | { | |
1632 | ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); | |
1633 | driver_dump->version_entry.hdr.len = | |
1634 | sizeof(struct ipr_dump_version_entry) - | |
1635 | sizeof(struct ipr_dump_entry_header); | |
1636 | driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; | |
1637 | driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; | |
1638 | strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); | |
1639 | driver_dump->hdr.num_entries++; | |
1640 | } | |
1641 | ||
1642 | /** | |
1643 | * ipr_dump_trace_data - Fill in the IOA trace in the dump. | |
1644 | * @ioa_cfg: ioa config struct | |
1645 | * @driver_dump: driver dump struct | |
1646 | * | |
1647 | * Return value: | |
1648 | * nothing | |
1649 | **/ | |
1650 | static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, | |
1651 | struct ipr_driver_dump *driver_dump) | |
1652 | { | |
1653 | ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); | |
1654 | driver_dump->trace_entry.hdr.len = | |
1655 | sizeof(struct ipr_dump_trace_entry) - | |
1656 | sizeof(struct ipr_dump_entry_header); | |
1657 | driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; | |
1658 | driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; | |
1659 | memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); | |
1660 | driver_dump->hdr.num_entries++; | |
1661 | } | |
1662 | ||
1663 | /** | |
1664 | * ipr_dump_location_data - Fill in the IOA location in the dump. | |
1665 | * @ioa_cfg: ioa config struct | |
1666 | * @driver_dump: driver dump struct | |
1667 | * | |
1668 | * Return value: | |
1669 | * nothing | |
1670 | **/ | |
1671 | static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, | |
1672 | struct ipr_driver_dump *driver_dump) | |
1673 | { | |
1674 | ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); | |
1675 | driver_dump->location_entry.hdr.len = | |
1676 | sizeof(struct ipr_dump_location_entry) - | |
1677 | sizeof(struct ipr_dump_entry_header); | |
1678 | driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; | |
1679 | driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; | |
1680 | strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id); | |
1681 | driver_dump->hdr.num_entries++; | |
1682 | } | |
1683 | ||
1684 | /** | |
1685 | * ipr_get_ioa_dump - Perform a dump of the driver and adapter. | |
1686 | * @ioa_cfg: ioa config struct | |
1687 | * @dump: dump struct | |
1688 | * | |
1689 | * Return value: | |
1690 | * nothing | |
1691 | **/ | |
1692 | static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) | |
1693 | { | |
1694 | unsigned long start_addr, sdt_word; | |
1695 | unsigned long lock_flags = 0; | |
1696 | struct ipr_driver_dump *driver_dump = &dump->driver_dump; | |
1697 | struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; | |
1698 | u32 num_entries, start_off, end_off; | |
1699 | u32 bytes_to_copy, bytes_copied, rc; | |
1700 | struct ipr_sdt *sdt; | |
1701 | int i; | |
1702 | ||
1703 | ENTER; | |
1704 | ||
1705 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1706 | ||
1707 | if (ioa_cfg->sdt_state != GET_DUMP) { | |
1708 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1709 | return; | |
1710 | } | |
1711 | ||
1712 | start_addr = readl(ioa_cfg->ioa_mailbox); | |
1713 | ||
1714 | if (!ipr_sdt_is_fmt2(start_addr)) { | |
1715 | dev_err(&ioa_cfg->pdev->dev, | |
1716 | "Invalid dump table format: %lx\n", start_addr); | |
1717 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1718 | return; | |
1719 | } | |
1720 | ||
1721 | dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); | |
1722 | ||
1723 | driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; | |
1724 | ||
1725 | /* Initialize the overall dump header */ | |
1726 | driver_dump->hdr.len = sizeof(struct ipr_driver_dump); | |
1727 | driver_dump->hdr.num_entries = 1; | |
1728 | driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); | |
1729 | driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; | |
1730 | driver_dump->hdr.os = IPR_DUMP_OS_LINUX; | |
1731 | driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; | |
1732 | ||
1733 | ipr_dump_version_data(ioa_cfg, driver_dump); | |
1734 | ipr_dump_location_data(ioa_cfg, driver_dump); | |
1735 | ipr_dump_ioa_type_data(ioa_cfg, driver_dump); | |
1736 | ipr_dump_trace_data(ioa_cfg, driver_dump); | |
1737 | ||
1738 | /* Update dump_header */ | |
1739 | driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); | |
1740 | ||
1741 | /* IOA Dump entry */ | |
1742 | ipr_init_dump_entry_hdr(&ioa_dump->hdr); | |
1743 | ioa_dump->format = IPR_SDT_FMT2; | |
1744 | ioa_dump->hdr.len = 0; | |
1745 | ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; | |
1746 | ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; | |
1747 | ||
1748 | /* First entries in sdt are actually a list of dump addresses and | |
1749 | lengths to gather the real dump data. sdt represents the pointer | |
1750 | to the ioa generated dump table. Dump data will be extracted based | |
1751 | on entries in this table */ | |
1752 | sdt = &ioa_dump->sdt; | |
1753 | ||
1754 | rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, | |
1755 | sizeof(struct ipr_sdt) / sizeof(__be32)); | |
1756 | ||
1757 | /* Smart Dump table is ready to use and the first entry is valid */ | |
1758 | if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) { | |
1759 | dev_err(&ioa_cfg->pdev->dev, | |
1760 | "Dump of IOA failed. Dump table not valid: %d, %X.\n", | |
1761 | rc, be32_to_cpu(sdt->hdr.state)); | |
1762 | driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; | |
1763 | ioa_cfg->sdt_state = DUMP_OBTAINED; | |
1764 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1765 | return; | |
1766 | } | |
1767 | ||
1768 | num_entries = be32_to_cpu(sdt->hdr.num_entries_used); | |
1769 | ||
1770 | if (num_entries > IPR_NUM_SDT_ENTRIES) | |
1771 | num_entries = IPR_NUM_SDT_ENTRIES; | |
1772 | ||
1773 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1774 | ||
1775 | for (i = 0; i < num_entries; i++) { | |
1776 | if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) { | |
1777 | driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; | |
1778 | break; | |
1779 | } | |
1780 | ||
1781 | if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { | |
1782 | sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset); | |
1783 | start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; | |
1784 | end_off = be32_to_cpu(sdt->entry[i].end_offset); | |
1785 | ||
1786 | if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) { | |
1787 | bytes_to_copy = end_off - start_off; | |
1788 | if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) { | |
1789 | sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; | |
1790 | continue; | |
1791 | } | |
1792 | ||
1793 | /* Copy data from adapter to driver buffers */ | |
1794 | bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, | |
1795 | bytes_to_copy); | |
1796 | ||
1797 | ioa_dump->hdr.len += bytes_copied; | |
1798 | ||
1799 | if (bytes_copied != bytes_to_copy) { | |
1800 | driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; | |
1801 | break; | |
1802 | } | |
1803 | } | |
1804 | } | |
1805 | } | |
1806 | ||
1807 | dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); | |
1808 | ||
1809 | /* Update dump_header */ | |
1810 | driver_dump->hdr.len += ioa_dump->hdr.len; | |
1811 | wmb(); | |
1812 | ioa_cfg->sdt_state = DUMP_OBTAINED; | |
1813 | LEAVE; | |
1814 | } | |
1815 | ||
1816 | #else | |
1817 | #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0) | |
1818 | #endif | |
1819 | ||
1820 | /** | |
1821 | * ipr_release_dump - Free adapter dump memory | |
1822 | * @kref: kref struct | |
1823 | * | |
1824 | * Return value: | |
1825 | * nothing | |
1826 | **/ | |
1827 | static void ipr_release_dump(struct kref *kref) | |
1828 | { | |
1829 | struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref); | |
1830 | struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; | |
1831 | unsigned long lock_flags = 0; | |
1832 | int i; | |
1833 | ||
1834 | ENTER; | |
1835 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1836 | ioa_cfg->dump = NULL; | |
1837 | ioa_cfg->sdt_state = INACTIVE; | |
1838 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1839 | ||
1840 | for (i = 0; i < dump->ioa_dump.next_page_index; i++) | |
1841 | free_page((unsigned long) dump->ioa_dump.ioa_data[i]); | |
1842 | ||
1843 | kfree(dump); | |
1844 | LEAVE; | |
1845 | } | |
1846 | ||
1847 | /** | |
1848 | * ipr_worker_thread - Worker thread | |
1849 | * @data: ioa config struct | |
1850 | * | |
1851 | * Called at task level from a work thread. This function takes care | |
1852 | * of adding and removing device from the mid-layer as configuration | |
1853 | * changes are detected by the adapter. | |
1854 | * | |
1855 | * Return value: | |
1856 | * nothing | |
1857 | **/ | |
1858 | static void ipr_worker_thread(void *data) | |
1859 | { | |
1860 | unsigned long lock_flags; | |
1861 | struct ipr_resource_entry *res; | |
1862 | struct scsi_device *sdev; | |
1863 | struct ipr_dump *dump; | |
1864 | struct ipr_ioa_cfg *ioa_cfg = data; | |
1865 | u8 bus, target, lun; | |
1866 | int did_work; | |
1867 | ||
1868 | ENTER; | |
1869 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1870 | ||
1871 | if (ioa_cfg->sdt_state == GET_DUMP) { | |
1872 | dump = ioa_cfg->dump; | |
1873 | if (!dump) { | |
1874 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1875 | return; | |
1876 | } | |
1877 | kref_get(&dump->kref); | |
1878 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1879 | ipr_get_ioa_dump(ioa_cfg, dump); | |
1880 | kref_put(&dump->kref, ipr_release_dump); | |
1881 | ||
1882 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1883 | if (ioa_cfg->sdt_state == DUMP_OBTAINED) | |
1884 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); | |
1885 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1886 | return; | |
1887 | } | |
1888 | ||
1889 | restart: | |
1890 | do { | |
1891 | did_work = 0; | |
1892 | if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) { | |
1893 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1894 | return; | |
1895 | } | |
1896 | ||
1897 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { | |
1898 | if (res->del_from_ml && res->sdev) { | |
1899 | did_work = 1; | |
1900 | sdev = res->sdev; | |
1901 | if (!scsi_device_get(sdev)) { | |
1902 | res->sdev = NULL; | |
1903 | list_move_tail(&res->queue, &ioa_cfg->free_res_q); | |
1904 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1905 | scsi_remove_device(sdev); | |
1906 | scsi_device_put(sdev); | |
1907 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1908 | } | |
1909 | break; | |
1910 | } | |
1911 | } | |
1912 | } while(did_work); | |
1913 | ||
1914 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { | |
1915 | if (res->add_to_ml) { | |
1916 | bus = res->cfgte.res_addr.bus; | |
1917 | target = res->cfgte.res_addr.target; | |
1918 | lun = res->cfgte.res_addr.lun; | |
1919 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1920 | scsi_add_device(ioa_cfg->host, bus, target, lun); | |
1921 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1922 | goto restart; | |
1923 | } | |
1924 | } | |
1925 | ||
1926 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1927 | kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE, NULL); | |
1928 | LEAVE; | |
1929 | } | |
1930 | ||
1931 | #ifdef CONFIG_SCSI_IPR_TRACE | |
1932 | /** | |
1933 | * ipr_read_trace - Dump the adapter trace | |
1934 | * @kobj: kobject struct | |
1935 | * @buf: buffer | |
1936 | * @off: offset | |
1937 | * @count: buffer size | |
1938 | * | |
1939 | * Return value: | |
1940 | * number of bytes printed to buffer | |
1941 | **/ | |
1942 | static ssize_t ipr_read_trace(struct kobject *kobj, char *buf, | |
1943 | loff_t off, size_t count) | |
1944 | { | |
1945 | struct class_device *cdev = container_of(kobj,struct class_device,kobj); | |
1946 | struct Scsi_Host *shost = class_to_shost(cdev); | |
1947 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
1948 | unsigned long lock_flags = 0; | |
1949 | int size = IPR_TRACE_SIZE; | |
1950 | char *src = (char *)ioa_cfg->trace; | |
1951 | ||
1952 | if (off > size) | |
1953 | return 0; | |
1954 | if (off + count > size) { | |
1955 | size -= off; | |
1956 | count = size; | |
1957 | } | |
1958 | ||
1959 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1960 | memcpy(buf, &src[off], count); | |
1961 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1962 | return count; | |
1963 | } | |
1964 | ||
1965 | static struct bin_attribute ipr_trace_attr = { | |
1966 | .attr = { | |
1967 | .name = "trace", | |
1968 | .mode = S_IRUGO, | |
1969 | }, | |
1970 | .size = 0, | |
1971 | .read = ipr_read_trace, | |
1972 | }; | |
1973 | #endif | |
1974 | ||
1975 | /** | |
1976 | * ipr_show_fw_version - Show the firmware version | |
1977 | * @class_dev: class device struct | |
1978 | * @buf: buffer | |
1979 | * | |
1980 | * Return value: | |
1981 | * number of bytes printed to buffer | |
1982 | **/ | |
1983 | static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf) | |
1984 | { | |
1985 | struct Scsi_Host *shost = class_to_shost(class_dev); | |
1986 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
1987 | struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; | |
1988 | unsigned long lock_flags = 0; | |
1989 | int len; | |
1990 | ||
1991 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1992 | len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", | |
1993 | ucode_vpd->major_release, ucode_vpd->card_type, | |
1994 | ucode_vpd->minor_release[0], | |
1995 | ucode_vpd->minor_release[1]); | |
1996 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1997 | return len; | |
1998 | } | |
1999 | ||
2000 | static struct class_device_attribute ipr_fw_version_attr = { | |
2001 | .attr = { | |
2002 | .name = "fw_version", | |
2003 | .mode = S_IRUGO, | |
2004 | }, | |
2005 | .show = ipr_show_fw_version, | |
2006 | }; | |
2007 | ||
2008 | /** | |
2009 | * ipr_show_log_level - Show the adapter's error logging level | |
2010 | * @class_dev: class device struct | |
2011 | * @buf: buffer | |
2012 | * | |
2013 | * Return value: | |
2014 | * number of bytes printed to buffer | |
2015 | **/ | |
2016 | static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf) | |
2017 | { | |
2018 | struct Scsi_Host *shost = class_to_shost(class_dev); | |
2019 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
2020 | unsigned long lock_flags = 0; | |
2021 | int len; | |
2022 | ||
2023 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2024 | len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); | |
2025 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2026 | return len; | |
2027 | } | |
2028 | ||
2029 | /** | |
2030 | * ipr_store_log_level - Change the adapter's error logging level | |
2031 | * @class_dev: class device struct | |
2032 | * @buf: buffer | |
2033 | * | |
2034 | * Return value: | |
2035 | * number of bytes printed to buffer | |
2036 | **/ | |
2037 | static ssize_t ipr_store_log_level(struct class_device *class_dev, | |
2038 | const char *buf, size_t count) | |
2039 | { | |
2040 | struct Scsi_Host *shost = class_to_shost(class_dev); | |
2041 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
2042 | unsigned long lock_flags = 0; | |
2043 | ||
2044 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2045 | ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); | |
2046 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2047 | return strlen(buf); | |
2048 | } | |
2049 | ||
2050 | static struct class_device_attribute ipr_log_level_attr = { | |
2051 | .attr = { | |
2052 | .name = "log_level", | |
2053 | .mode = S_IRUGO | S_IWUSR, | |
2054 | }, | |
2055 | .show = ipr_show_log_level, | |
2056 | .store = ipr_store_log_level | |
2057 | }; | |
2058 | ||
2059 | /** | |
2060 | * ipr_store_diagnostics - IOA Diagnostics interface | |
2061 | * @class_dev: class_device struct | |
2062 | * @buf: buffer | |
2063 | * @count: buffer size | |
2064 | * | |
2065 | * This function will reset the adapter and wait a reasonable | |
2066 | * amount of time for any errors that the adapter might log. | |
2067 | * | |
2068 | * Return value: | |
2069 | * count on success / other on failure | |
2070 | **/ | |
2071 | static ssize_t ipr_store_diagnostics(struct class_device *class_dev, | |
2072 | const char *buf, size_t count) | |
2073 | { | |
2074 | struct Scsi_Host *shost = class_to_shost(class_dev); | |
2075 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
2076 | unsigned long lock_flags = 0; | |
2077 | int rc = count; | |
2078 | ||
2079 | if (!capable(CAP_SYS_ADMIN)) | |
2080 | return -EACCES; | |
2081 | ||
2082 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); | |
2083 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2084 | ioa_cfg->errors_logged = 0; | |
2085 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); | |
2086 | ||
2087 | if (ioa_cfg->in_reset_reload) { | |
2088 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2089 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); | |
2090 | ||
2091 | /* Wait for a second for any errors to be logged */ | |
2092 | msleep(1000); | |
2093 | } else { | |
2094 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2095 | return -EIO; | |
2096 | } | |
2097 | ||
2098 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2099 | if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) | |
2100 | rc = -EIO; | |
2101 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2102 | ||
2103 | return rc; | |
2104 | } | |
2105 | ||
2106 | static struct class_device_attribute ipr_diagnostics_attr = { | |
2107 | .attr = { | |
2108 | .name = "run_diagnostics", | |
2109 | .mode = S_IWUSR, | |
2110 | }, | |
2111 | .store = ipr_store_diagnostics | |
2112 | }; | |
2113 | ||
2114 | /** | |
2115 | * ipr_store_reset_adapter - Reset the adapter | |
2116 | * @class_dev: class_device struct | |
2117 | * @buf: buffer | |
2118 | * @count: buffer size | |
2119 | * | |
2120 | * This function will reset the adapter. | |
2121 | * | |
2122 | * Return value: | |
2123 | * count on success / other on failure | |
2124 | **/ | |
2125 | static ssize_t ipr_store_reset_adapter(struct class_device *class_dev, | |
2126 | const char *buf, size_t count) | |
2127 | { | |
2128 | struct Scsi_Host *shost = class_to_shost(class_dev); | |
2129 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
2130 | unsigned long lock_flags; | |
2131 | int result = count; | |
2132 | ||
2133 | if (!capable(CAP_SYS_ADMIN)) | |
2134 | return -EACCES; | |
2135 | ||
2136 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2137 | if (!ioa_cfg->in_reset_reload) | |
2138 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); | |
2139 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2140 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); | |
2141 | ||
2142 | return result; | |
2143 | } | |
2144 | ||
2145 | static struct class_device_attribute ipr_ioa_reset_attr = { | |
2146 | .attr = { | |
2147 | .name = "reset_host", | |
2148 | .mode = S_IWUSR, | |
2149 | }, | |
2150 | .store = ipr_store_reset_adapter | |
2151 | }; | |
2152 | ||
2153 | /** | |
2154 | * ipr_alloc_ucode_buffer - Allocates a microcode download buffer | |
2155 | * @buf_len: buffer length | |
2156 | * | |
2157 | * Allocates a DMA'able buffer in chunks and assembles a scatter/gather | |
2158 | * list to use for microcode download | |
2159 | * | |
2160 | * Return value: | |
2161 | * pointer to sglist / NULL on failure | |
2162 | **/ | |
2163 | static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) | |
2164 | { | |
2165 | int sg_size, order, bsize_elem, num_elem, i, j; | |
2166 | struct ipr_sglist *sglist; | |
2167 | struct scatterlist *scatterlist; | |
2168 | struct page *page; | |
2169 | ||
2170 | /* Get the minimum size per scatter/gather element */ | |
2171 | sg_size = buf_len / (IPR_MAX_SGLIST - 1); | |
2172 | ||
2173 | /* Get the actual size per element */ | |
2174 | order = get_order(sg_size); | |
2175 | ||
2176 | /* Determine the actual number of bytes per element */ | |
2177 | bsize_elem = PAGE_SIZE * (1 << order); | |
2178 | ||
2179 | /* Determine the actual number of sg entries needed */ | |
2180 | if (buf_len % bsize_elem) | |
2181 | num_elem = (buf_len / bsize_elem) + 1; | |
2182 | else | |
2183 | num_elem = buf_len / bsize_elem; | |
2184 | ||
2185 | /* Allocate a scatter/gather list for the DMA */ | |
2186 | sglist = kmalloc(sizeof(struct ipr_sglist) + | |
2187 | (sizeof(struct scatterlist) * (num_elem - 1)), | |
2188 | GFP_KERNEL); | |
2189 | ||
2190 | if (sglist == NULL) { | |
2191 | ipr_trace; | |
2192 | return NULL; | |
2193 | } | |
2194 | ||
2195 | memset(sglist, 0, sizeof(struct ipr_sglist) + | |
2196 | (sizeof(struct scatterlist) * (num_elem - 1))); | |
2197 | ||
2198 | scatterlist = sglist->scatterlist; | |
2199 | ||
2200 | sglist->order = order; | |
2201 | sglist->num_sg = num_elem; | |
2202 | ||
2203 | /* Allocate a bunch of sg elements */ | |
2204 | for (i = 0; i < num_elem; i++) { | |
2205 | page = alloc_pages(GFP_KERNEL, order); | |
2206 | if (!page) { | |
2207 | ipr_trace; | |
2208 | ||
2209 | /* Free up what we already allocated */ | |
2210 | for (j = i - 1; j >= 0; j--) | |
2211 | __free_pages(scatterlist[j].page, order); | |
2212 | kfree(sglist); | |
2213 | return NULL; | |
2214 | } | |
2215 | ||
2216 | scatterlist[i].page = page; | |
2217 | } | |
2218 | ||
2219 | return sglist; | |
2220 | } | |
2221 | ||
2222 | /** | |
2223 | * ipr_free_ucode_buffer - Frees a microcode download buffer | |
2224 | * @p_dnld: scatter/gather list pointer | |
2225 | * | |
2226 | * Free a DMA'able ucode download buffer previously allocated with | |
2227 | * ipr_alloc_ucode_buffer | |
2228 | * | |
2229 | * Return value: | |
2230 | * nothing | |
2231 | **/ | |
2232 | static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) | |
2233 | { | |
2234 | int i; | |
2235 | ||
2236 | for (i = 0; i < sglist->num_sg; i++) | |
2237 | __free_pages(sglist->scatterlist[i].page, sglist->order); | |
2238 | ||
2239 | kfree(sglist); | |
2240 | } | |
2241 | ||
2242 | /** | |
2243 | * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer | |
2244 | * @sglist: scatter/gather list pointer | |
2245 | * @buffer: buffer pointer | |
2246 | * @len: buffer length | |
2247 | * | |
2248 | * Copy a microcode image from a user buffer into a buffer allocated by | |
2249 | * ipr_alloc_ucode_buffer | |
2250 | * | |
2251 | * Return value: | |
2252 | * 0 on success / other on failure | |
2253 | **/ | |
2254 | static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, | |
2255 | u8 *buffer, u32 len) | |
2256 | { | |
2257 | int bsize_elem, i, result = 0; | |
2258 | struct scatterlist *scatterlist; | |
2259 | void *kaddr; | |
2260 | ||
2261 | /* Determine the actual number of bytes per element */ | |
2262 | bsize_elem = PAGE_SIZE * (1 << sglist->order); | |
2263 | ||
2264 | scatterlist = sglist->scatterlist; | |
2265 | ||
2266 | for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { | |
2267 | kaddr = kmap(scatterlist[i].page); | |
2268 | memcpy(kaddr, buffer, bsize_elem); | |
2269 | kunmap(scatterlist[i].page); | |
2270 | ||
2271 | scatterlist[i].length = bsize_elem; | |
2272 | ||
2273 | if (result != 0) { | |
2274 | ipr_trace; | |
2275 | return result; | |
2276 | } | |
2277 | } | |
2278 | ||
2279 | if (len % bsize_elem) { | |
2280 | kaddr = kmap(scatterlist[i].page); | |
2281 | memcpy(kaddr, buffer, len % bsize_elem); | |
2282 | kunmap(scatterlist[i].page); | |
2283 | ||
2284 | scatterlist[i].length = len % bsize_elem; | |
2285 | } | |
2286 | ||
2287 | sglist->buffer_len = len; | |
2288 | return result; | |
2289 | } | |
2290 | ||
2291 | /** | |
2292 | * ipr_map_ucode_buffer - Map a microcode download buffer | |
2293 | * @ipr_cmd: ipr command struct | |
2294 | * @sglist: scatter/gather list | |
2295 | * @len: total length of download buffer | |
2296 | * | |
2297 | * Maps a microcode download scatter/gather list for DMA and | |
2298 | * builds the IOADL. | |
2299 | * | |
2300 | * Return value: | |
2301 | * 0 on success / -EIO on failure | |
2302 | **/ | |
2303 | static int ipr_map_ucode_buffer(struct ipr_cmnd *ipr_cmd, | |
2304 | struct ipr_sglist *sglist, int len) | |
2305 | { | |
2306 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
2307 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; | |
2308 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; | |
2309 | struct scatterlist *scatterlist = sglist->scatterlist; | |
2310 | int i; | |
2311 | ||
2312 | ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, scatterlist, | |
2313 | sglist->num_sg, DMA_TO_DEVICE); | |
2314 | ||
2315 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; | |
2316 | ioarcb->write_data_transfer_length = cpu_to_be32(len); | |
2317 | ioarcb->write_ioadl_len = | |
2318 | cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); | |
2319 | ||
2320 | for (i = 0; i < ipr_cmd->dma_use_sg; i++) { | |
2321 | ioadl[i].flags_and_data_len = | |
2322 | cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); | |
2323 | ioadl[i].address = | |
2324 | cpu_to_be32(sg_dma_address(&scatterlist[i])); | |
2325 | } | |
2326 | ||
2327 | if (likely(ipr_cmd->dma_use_sg)) { | |
2328 | ioadl[i-1].flags_and_data_len |= | |
2329 | cpu_to_be32(IPR_IOADL_FLAGS_LAST); | |
2330 | } | |
2331 | else { | |
2332 | dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); | |
2333 | return -EIO; | |
2334 | } | |
2335 | ||
2336 | return 0; | |
2337 | } | |
2338 | ||
2339 | /** | |
2340 | * ipr_store_update_fw - Update the firmware on the adapter | |
2341 | * @class_dev: class_device struct | |
2342 | * @buf: buffer | |
2343 | * @count: buffer size | |
2344 | * | |
2345 | * This function will update the firmware on the adapter. | |
2346 | * | |
2347 | * Return value: | |
2348 | * count on success / other on failure | |
2349 | **/ | |
2350 | static ssize_t ipr_store_update_fw(struct class_device *class_dev, | |
2351 | const char *buf, size_t count) | |
2352 | { | |
2353 | struct Scsi_Host *shost = class_to_shost(class_dev); | |
2354 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
2355 | struct ipr_ucode_image_header *image_hdr; | |
2356 | const struct firmware *fw_entry; | |
2357 | struct ipr_sglist *sglist; | |
2358 | unsigned long lock_flags; | |
2359 | char fname[100]; | |
2360 | char *src; | |
2361 | int len, result, dnld_size; | |
2362 | ||
2363 | if (!capable(CAP_SYS_ADMIN)) | |
2364 | return -EACCES; | |
2365 | ||
2366 | len = snprintf(fname, 99, "%s", buf); | |
2367 | fname[len-1] = '\0'; | |
2368 | ||
2369 | if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { | |
2370 | dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); | |
2371 | return -EIO; | |
2372 | } | |
2373 | ||
2374 | image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; | |
2375 | ||
2376 | if (be32_to_cpu(image_hdr->header_length) > fw_entry->size || | |
2377 | (ioa_cfg->vpd_cbs->page3_data.card_type && | |
2378 | ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) { | |
2379 | dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n"); | |
2380 | release_firmware(fw_entry); | |
2381 | return -EINVAL; | |
2382 | } | |
2383 | ||
2384 | src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); | |
2385 | dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); | |
2386 | sglist = ipr_alloc_ucode_buffer(dnld_size); | |
2387 | ||
2388 | if (!sglist) { | |
2389 | dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); | |
2390 | release_firmware(fw_entry); | |
2391 | return -ENOMEM; | |
2392 | } | |
2393 | ||
2394 | result = ipr_copy_ucode_buffer(sglist, src, dnld_size); | |
2395 | ||
2396 | if (result) { | |
2397 | dev_err(&ioa_cfg->pdev->dev, | |
2398 | "Microcode buffer copy to DMA buffer failed\n"); | |
2399 | ipr_free_ucode_buffer(sglist); | |
2400 | release_firmware(fw_entry); | |
2401 | return result; | |
2402 | } | |
2403 | ||
2404 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2405 | ||
2406 | if (ioa_cfg->ucode_sglist) { | |
2407 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2408 | dev_err(&ioa_cfg->pdev->dev, | |
2409 | "Microcode download already in progress\n"); | |
2410 | ipr_free_ucode_buffer(sglist); | |
2411 | release_firmware(fw_entry); | |
2412 | return -EIO; | |
2413 | } | |
2414 | ||
2415 | ioa_cfg->ucode_sglist = sglist; | |
2416 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); | |
2417 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2418 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); | |
2419 | ||
2420 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2421 | ioa_cfg->ucode_sglist = NULL; | |
2422 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2423 | ||
2424 | ipr_free_ucode_buffer(sglist); | |
2425 | release_firmware(fw_entry); | |
2426 | ||
2427 | return count; | |
2428 | } | |
2429 | ||
2430 | static struct class_device_attribute ipr_update_fw_attr = { | |
2431 | .attr = { | |
2432 | .name = "update_fw", | |
2433 | .mode = S_IWUSR, | |
2434 | }, | |
2435 | .store = ipr_store_update_fw | |
2436 | }; | |
2437 | ||
2438 | static struct class_device_attribute *ipr_ioa_attrs[] = { | |
2439 | &ipr_fw_version_attr, | |
2440 | &ipr_log_level_attr, | |
2441 | &ipr_diagnostics_attr, | |
2442 | &ipr_ioa_reset_attr, | |
2443 | &ipr_update_fw_attr, | |
2444 | NULL, | |
2445 | }; | |
2446 | ||
2447 | #ifdef CONFIG_SCSI_IPR_DUMP | |
2448 | /** | |
2449 | * ipr_read_dump - Dump the adapter | |
2450 | * @kobj: kobject struct | |
2451 | * @buf: buffer | |
2452 | * @off: offset | |
2453 | * @count: buffer size | |
2454 | * | |
2455 | * Return value: | |
2456 | * number of bytes printed to buffer | |
2457 | **/ | |
2458 | static ssize_t ipr_read_dump(struct kobject *kobj, char *buf, | |
2459 | loff_t off, size_t count) | |
2460 | { | |
2461 | struct class_device *cdev = container_of(kobj,struct class_device,kobj); | |
2462 | struct Scsi_Host *shost = class_to_shost(cdev); | |
2463 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
2464 | struct ipr_dump *dump; | |
2465 | unsigned long lock_flags = 0; | |
2466 | char *src; | |
2467 | int len; | |
2468 | size_t rc = count; | |
2469 | ||
2470 | if (!capable(CAP_SYS_ADMIN)) | |
2471 | return -EACCES; | |
2472 | ||
2473 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2474 | dump = ioa_cfg->dump; | |
2475 | ||
2476 | if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { | |
2477 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2478 | return 0; | |
2479 | } | |
2480 | kref_get(&dump->kref); | |
2481 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2482 | ||
2483 | if (off > dump->driver_dump.hdr.len) { | |
2484 | kref_put(&dump->kref, ipr_release_dump); | |
2485 | return 0; | |
2486 | } | |
2487 | ||
2488 | if (off + count > dump->driver_dump.hdr.len) { | |
2489 | count = dump->driver_dump.hdr.len - off; | |
2490 | rc = count; | |
2491 | } | |
2492 | ||
2493 | if (count && off < sizeof(dump->driver_dump)) { | |
2494 | if (off + count > sizeof(dump->driver_dump)) | |
2495 | len = sizeof(dump->driver_dump) - off; | |
2496 | else | |
2497 | len = count; | |
2498 | src = (u8 *)&dump->driver_dump + off; | |
2499 | memcpy(buf, src, len); | |
2500 | buf += len; | |
2501 | off += len; | |
2502 | count -= len; | |
2503 | } | |
2504 | ||
2505 | off -= sizeof(dump->driver_dump); | |
2506 | ||
2507 | if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) { | |
2508 | if (off + count > offsetof(struct ipr_ioa_dump, ioa_data)) | |
2509 | len = offsetof(struct ipr_ioa_dump, ioa_data) - off; | |
2510 | else | |
2511 | len = count; | |
2512 | src = (u8 *)&dump->ioa_dump + off; | |
2513 | memcpy(buf, src, len); | |
2514 | buf += len; | |
2515 | off += len; | |
2516 | count -= len; | |
2517 | } | |
2518 | ||
2519 | off -= offsetof(struct ipr_ioa_dump, ioa_data); | |
2520 | ||
2521 | while (count) { | |
2522 | if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) | |
2523 | len = PAGE_ALIGN(off) - off; | |
2524 | else | |
2525 | len = count; | |
2526 | src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; | |
2527 | src += off & ~PAGE_MASK; | |
2528 | memcpy(buf, src, len); | |
2529 | buf += len; | |
2530 | off += len; | |
2531 | count -= len; | |
2532 | } | |
2533 | ||
2534 | kref_put(&dump->kref, ipr_release_dump); | |
2535 | return rc; | |
2536 | } | |
2537 | ||
2538 | /** | |
2539 | * ipr_alloc_dump - Prepare for adapter dump | |
2540 | * @ioa_cfg: ioa config struct | |
2541 | * | |
2542 | * Return value: | |
2543 | * 0 on success / other on failure | |
2544 | **/ | |
2545 | static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) | |
2546 | { | |
2547 | struct ipr_dump *dump; | |
2548 | unsigned long lock_flags = 0; | |
2549 | ||
2550 | ENTER; | |
2551 | dump = kmalloc(sizeof(struct ipr_dump), GFP_KERNEL); | |
2552 | ||
2553 | if (!dump) { | |
2554 | ipr_err("Dump memory allocation failed\n"); | |
2555 | return -ENOMEM; | |
2556 | } | |
2557 | ||
2558 | memset(dump, 0, sizeof(struct ipr_dump)); | |
2559 | kref_init(&dump->kref); | |
2560 | dump->ioa_cfg = ioa_cfg; | |
2561 | ||
2562 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2563 | ||
2564 | if (INACTIVE != ioa_cfg->sdt_state) { | |
2565 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2566 | kfree(dump); | |
2567 | return 0; | |
2568 | } | |
2569 | ||
2570 | ioa_cfg->dump = dump; | |
2571 | ioa_cfg->sdt_state = WAIT_FOR_DUMP; | |
2572 | if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) { | |
2573 | ioa_cfg->dump_taken = 1; | |
2574 | schedule_work(&ioa_cfg->work_q); | |
2575 | } | |
2576 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2577 | ||
2578 | LEAVE; | |
2579 | return 0; | |
2580 | } | |
2581 | ||
2582 | /** | |
2583 | * ipr_free_dump - Free adapter dump memory | |
2584 | * @ioa_cfg: ioa config struct | |
2585 | * | |
2586 | * Return value: | |
2587 | * 0 on success / other on failure | |
2588 | **/ | |
2589 | static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) | |
2590 | { | |
2591 | struct ipr_dump *dump; | |
2592 | unsigned long lock_flags = 0; | |
2593 | ||
2594 | ENTER; | |
2595 | ||
2596 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2597 | dump = ioa_cfg->dump; | |
2598 | if (!dump) { | |
2599 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2600 | return 0; | |
2601 | } | |
2602 | ||
2603 | ioa_cfg->dump = NULL; | |
2604 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2605 | ||
2606 | kref_put(&dump->kref, ipr_release_dump); | |
2607 | ||
2608 | LEAVE; | |
2609 | return 0; | |
2610 | } | |
2611 | ||
2612 | /** | |
2613 | * ipr_write_dump - Setup dump state of adapter | |
2614 | * @kobj: kobject struct | |
2615 | * @buf: buffer | |
2616 | * @off: offset | |
2617 | * @count: buffer size | |
2618 | * | |
2619 | * Return value: | |
2620 | * number of bytes printed to buffer | |
2621 | **/ | |
2622 | static ssize_t ipr_write_dump(struct kobject *kobj, char *buf, | |
2623 | loff_t off, size_t count) | |
2624 | { | |
2625 | struct class_device *cdev = container_of(kobj,struct class_device,kobj); | |
2626 | struct Scsi_Host *shost = class_to_shost(cdev); | |
2627 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
2628 | int rc; | |
2629 | ||
2630 | if (!capable(CAP_SYS_ADMIN)) | |
2631 | return -EACCES; | |
2632 | ||
2633 | if (buf[0] == '1') | |
2634 | rc = ipr_alloc_dump(ioa_cfg); | |
2635 | else if (buf[0] == '0') | |
2636 | rc = ipr_free_dump(ioa_cfg); | |
2637 | else | |
2638 | return -EINVAL; | |
2639 | ||
2640 | if (rc) | |
2641 | return rc; | |
2642 | else | |
2643 | return count; | |
2644 | } | |
2645 | ||
2646 | static struct bin_attribute ipr_dump_attr = { | |
2647 | .attr = { | |
2648 | .name = "dump", | |
2649 | .mode = S_IRUSR | S_IWUSR, | |
2650 | }, | |
2651 | .size = 0, | |
2652 | .read = ipr_read_dump, | |
2653 | .write = ipr_write_dump | |
2654 | }; | |
2655 | #else | |
2656 | static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; | |
2657 | #endif | |
2658 | ||
2659 | /** | |
2660 | * ipr_change_queue_depth - Change the device's queue depth | |
2661 | * @sdev: scsi device struct | |
2662 | * @qdepth: depth to set | |
2663 | * | |
2664 | * Return value: | |
2665 | * actual depth set | |
2666 | **/ | |
2667 | static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) | |
2668 | { | |
2669 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); | |
2670 | return sdev->queue_depth; | |
2671 | } | |
2672 | ||
2673 | /** | |
2674 | * ipr_change_queue_type - Change the device's queue type | |
2675 | * @dsev: scsi device struct | |
2676 | * @tag_type: type of tags to use | |
2677 | * | |
2678 | * Return value: | |
2679 | * actual queue type set | |
2680 | **/ | |
2681 | static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type) | |
2682 | { | |
2683 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; | |
2684 | struct ipr_resource_entry *res; | |
2685 | unsigned long lock_flags = 0; | |
2686 | ||
2687 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2688 | res = (struct ipr_resource_entry *)sdev->hostdata; | |
2689 | ||
2690 | if (res) { | |
2691 | if (ipr_is_gscsi(res) && sdev->tagged_supported) { | |
2692 | /* | |
2693 | * We don't bother quiescing the device here since the | |
2694 | * adapter firmware does it for us. | |
2695 | */ | |
2696 | scsi_set_tag_type(sdev, tag_type); | |
2697 | ||
2698 | if (tag_type) | |
2699 | scsi_activate_tcq(sdev, sdev->queue_depth); | |
2700 | else | |
2701 | scsi_deactivate_tcq(sdev, sdev->queue_depth); | |
2702 | } else | |
2703 | tag_type = 0; | |
2704 | } else | |
2705 | tag_type = 0; | |
2706 | ||
2707 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2708 | return tag_type; | |
2709 | } | |
2710 | ||
2711 | /** | |
2712 | * ipr_show_adapter_handle - Show the adapter's resource handle for this device | |
2713 | * @dev: device struct | |
2714 | * @buf: buffer | |
2715 | * | |
2716 | * Return value: | |
2717 | * number of bytes printed to buffer | |
2718 | **/ | |
10523b3b | 2719 | static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
2720 | { |
2721 | struct scsi_device *sdev = to_scsi_device(dev); | |
2722 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; | |
2723 | struct ipr_resource_entry *res; | |
2724 | unsigned long lock_flags = 0; | |
2725 | ssize_t len = -ENXIO; | |
2726 | ||
2727 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2728 | res = (struct ipr_resource_entry *)sdev->hostdata; | |
2729 | if (res) | |
2730 | len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle); | |
2731 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2732 | return len; | |
2733 | } | |
2734 | ||
2735 | static struct device_attribute ipr_adapter_handle_attr = { | |
2736 | .attr = { | |
2737 | .name = "adapter_handle", | |
2738 | .mode = S_IRUSR, | |
2739 | }, | |
2740 | .show = ipr_show_adapter_handle | |
2741 | }; | |
2742 | ||
2743 | static struct device_attribute *ipr_dev_attrs[] = { | |
2744 | &ipr_adapter_handle_attr, | |
2745 | NULL, | |
2746 | }; | |
2747 | ||
2748 | /** | |
2749 | * ipr_biosparam - Return the HSC mapping | |
2750 | * @sdev: scsi device struct | |
2751 | * @block_device: block device pointer | |
2752 | * @capacity: capacity of the device | |
2753 | * @parm: Array containing returned HSC values. | |
2754 | * | |
2755 | * This function generates the HSC parms that fdisk uses. | |
2756 | * We want to make sure we return something that places partitions | |
2757 | * on 4k boundaries for best performance with the IOA. | |
2758 | * | |
2759 | * Return value: | |
2760 | * 0 on success | |
2761 | **/ | |
2762 | static int ipr_biosparam(struct scsi_device *sdev, | |
2763 | struct block_device *block_device, | |
2764 | sector_t capacity, int *parm) | |
2765 | { | |
2766 | int heads, sectors; | |
2767 | sector_t cylinders; | |
2768 | ||
2769 | heads = 128; | |
2770 | sectors = 32; | |
2771 | ||
2772 | cylinders = capacity; | |
2773 | sector_div(cylinders, (128 * 32)); | |
2774 | ||
2775 | /* return result */ | |
2776 | parm[0] = heads; | |
2777 | parm[1] = sectors; | |
2778 | parm[2] = cylinders; | |
2779 | ||
2780 | return 0; | |
2781 | } | |
2782 | ||
2783 | /** | |
2784 | * ipr_slave_destroy - Unconfigure a SCSI device | |
2785 | * @sdev: scsi device struct | |
2786 | * | |
2787 | * Return value: | |
2788 | * nothing | |
2789 | **/ | |
2790 | static void ipr_slave_destroy(struct scsi_device *sdev) | |
2791 | { | |
2792 | struct ipr_resource_entry *res; | |
2793 | struct ipr_ioa_cfg *ioa_cfg; | |
2794 | unsigned long lock_flags = 0; | |
2795 | ||
2796 | ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; | |
2797 | ||
2798 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2799 | res = (struct ipr_resource_entry *) sdev->hostdata; | |
2800 | if (res) { | |
2801 | sdev->hostdata = NULL; | |
2802 | res->sdev = NULL; | |
2803 | } | |
2804 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2805 | } | |
2806 | ||
2807 | /** | |
2808 | * ipr_slave_configure - Configure a SCSI device | |
2809 | * @sdev: scsi device struct | |
2810 | * | |
2811 | * This function configures the specified scsi device. | |
2812 | * | |
2813 | * Return value: | |
2814 | * 0 on success | |
2815 | **/ | |
2816 | static int ipr_slave_configure(struct scsi_device *sdev) | |
2817 | { | |
2818 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; | |
2819 | struct ipr_resource_entry *res; | |
2820 | unsigned long lock_flags = 0; | |
2821 | ||
2822 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2823 | res = sdev->hostdata; | |
2824 | if (res) { | |
2825 | if (ipr_is_af_dasd_device(res)) | |
2826 | sdev->type = TYPE_RAID; | |
2827 | if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) | |
2828 | sdev->scsi_level = 4; | |
2829 | if (ipr_is_vset_device(res)) { | |
2830 | sdev->timeout = IPR_VSET_RW_TIMEOUT; | |
2831 | blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); | |
2832 | } | |
2833 | if (IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data)) | |
2834 | sdev->allow_restart = 1; | |
2835 | scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); | |
2836 | } | |
2837 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2838 | return 0; | |
2839 | } | |
2840 | ||
2841 | /** | |
2842 | * ipr_slave_alloc - Prepare for commands to a device. | |
2843 | * @sdev: scsi device struct | |
2844 | * | |
2845 | * This function saves a pointer to the resource entry | |
2846 | * in the scsi device struct if the device exists. We | |
2847 | * can then use this pointer in ipr_queuecommand when | |
2848 | * handling new commands. | |
2849 | * | |
2850 | * Return value: | |
2851 | * 0 on success | |
2852 | **/ | |
2853 | static int ipr_slave_alloc(struct scsi_device *sdev) | |
2854 | { | |
2855 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; | |
2856 | struct ipr_resource_entry *res; | |
2857 | unsigned long lock_flags; | |
2858 | ||
2859 | sdev->hostdata = NULL; | |
2860 | ||
2861 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2862 | ||
2863 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { | |
2864 | if ((res->cfgte.res_addr.bus == sdev->channel) && | |
2865 | (res->cfgte.res_addr.target == sdev->id) && | |
2866 | (res->cfgte.res_addr.lun == sdev->lun)) { | |
2867 | res->sdev = sdev; | |
2868 | res->add_to_ml = 0; | |
2869 | res->in_erp = 0; | |
2870 | sdev->hostdata = res; | |
2871 | res->needs_sync_complete = 1; | |
2872 | break; | |
2873 | } | |
2874 | } | |
2875 | ||
2876 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2877 | ||
2878 | return 0; | |
2879 | } | |
2880 | ||
2881 | /** | |
2882 | * ipr_eh_host_reset - Reset the host adapter | |
2883 | * @scsi_cmd: scsi command struct | |
2884 | * | |
2885 | * Return value: | |
2886 | * SUCCESS / FAILED | |
2887 | **/ | |
df0ae249 | 2888 | static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd) |
1da177e4 LT |
2889 | { |
2890 | struct ipr_ioa_cfg *ioa_cfg; | |
2891 | int rc; | |
2892 | ||
2893 | ENTER; | |
2894 | ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; | |
2895 | ||
2896 | dev_err(&ioa_cfg->pdev->dev, | |
2897 | "Adapter being reset as a result of error recovery.\n"); | |
2898 | ||
2899 | if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) | |
2900 | ioa_cfg->sdt_state = GET_DUMP; | |
2901 | ||
2902 | rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV); | |
2903 | ||
2904 | LEAVE; | |
2905 | return rc; | |
2906 | } | |
2907 | ||
df0ae249 JG |
2908 | static int ipr_eh_host_reset(struct scsi_cmnd * cmd) |
2909 | { | |
2910 | int rc; | |
2911 | ||
2912 | spin_lock_irq(cmd->device->host->host_lock); | |
2913 | rc = __ipr_eh_host_reset(cmd); | |
2914 | spin_unlock_irq(cmd->device->host->host_lock); | |
2915 | ||
2916 | return rc; | |
2917 | } | |
2918 | ||
1da177e4 LT |
2919 | /** |
2920 | * ipr_eh_dev_reset - Reset the device | |
2921 | * @scsi_cmd: scsi command struct | |
2922 | * | |
2923 | * This function issues a device reset to the affected device. | |
2924 | * A LUN reset will be sent to the device first. If that does | |
2925 | * not work, a target reset will be sent. | |
2926 | * | |
2927 | * Return value: | |
2928 | * SUCCESS / FAILED | |
2929 | **/ | |
94d0e7b8 | 2930 | static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) |
1da177e4 LT |
2931 | { |
2932 | struct ipr_cmnd *ipr_cmd; | |
2933 | struct ipr_ioa_cfg *ioa_cfg; | |
2934 | struct ipr_resource_entry *res; | |
2935 | struct ipr_cmd_pkt *cmd_pkt; | |
2936 | u32 ioasc; | |
2937 | ||
2938 | ENTER; | |
2939 | ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; | |
2940 | res = scsi_cmd->device->hostdata; | |
2941 | ||
2942 | if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res))) | |
2943 | return FAILED; | |
2944 | ||
2945 | /* | |
2946 | * If we are currently going through reset/reload, return failed. This will force the | |
2947 | * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the | |
2948 | * reset to complete | |
2949 | */ | |
2950 | if (ioa_cfg->in_reset_reload) | |
2951 | return FAILED; | |
2952 | if (ioa_cfg->ioa_is_dead) | |
2953 | return FAILED; | |
2954 | ||
2955 | list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { | |
2956 | if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) { | |
2957 | if (ipr_cmd->scsi_cmd) | |
2958 | ipr_cmd->done = ipr_scsi_eh_done; | |
2959 | } | |
2960 | } | |
2961 | ||
2962 | res->resetting_device = 1; | |
2963 | ||
2964 | ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); | |
2965 | ||
2966 | ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; | |
2967 | cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; | |
2968 | cmd_pkt->request_type = IPR_RQTYPE_IOACMD; | |
2969 | cmd_pkt->cdb[0] = IPR_RESET_DEVICE; | |
2970 | ||
2971 | ipr_sdev_err(scsi_cmd->device, "Resetting device\n"); | |
2972 | ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); | |
2973 | ||
2974 | ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
2975 | ||
2976 | res->resetting_device = 0; | |
2977 | ||
2978 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
2979 | ||
2980 | LEAVE; | |
2981 | return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); | |
2982 | } | |
2983 | ||
94d0e7b8 JG |
2984 | static int ipr_eh_dev_reset(struct scsi_cmnd * cmd) |
2985 | { | |
2986 | int rc; | |
2987 | ||
2988 | spin_lock_irq(cmd->device->host->host_lock); | |
2989 | rc = __ipr_eh_dev_reset(cmd); | |
2990 | spin_unlock_irq(cmd->device->host->host_lock); | |
2991 | ||
2992 | return rc; | |
2993 | } | |
2994 | ||
1da177e4 LT |
2995 | /** |
2996 | * ipr_bus_reset_done - Op done function for bus reset. | |
2997 | * @ipr_cmd: ipr command struct | |
2998 | * | |
2999 | * This function is the op done function for a bus reset | |
3000 | * | |
3001 | * Return value: | |
3002 | * none | |
3003 | **/ | |
3004 | static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) | |
3005 | { | |
3006 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
3007 | struct ipr_resource_entry *res; | |
3008 | ||
3009 | ENTER; | |
3010 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { | |
3011 | if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle, | |
3012 | sizeof(res->cfgte.res_handle))) { | |
3013 | scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus); | |
3014 | break; | |
3015 | } | |
3016 | } | |
3017 | ||
3018 | /* | |
3019 | * If abort has not completed, indicate the reset has, else call the | |
3020 | * abort's done function to wake the sleeping eh thread | |
3021 | */ | |
3022 | if (ipr_cmd->sibling->sibling) | |
3023 | ipr_cmd->sibling->sibling = NULL; | |
3024 | else | |
3025 | ipr_cmd->sibling->done(ipr_cmd->sibling); | |
3026 | ||
3027 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
3028 | LEAVE; | |
3029 | } | |
3030 | ||
3031 | /** | |
3032 | * ipr_abort_timeout - An abort task has timed out | |
3033 | * @ipr_cmd: ipr command struct | |
3034 | * | |
3035 | * This function handles when an abort task times out. If this | |
3036 | * happens we issue a bus reset since we have resources tied | |
3037 | * up that must be freed before returning to the midlayer. | |
3038 | * | |
3039 | * Return value: | |
3040 | * none | |
3041 | **/ | |
3042 | static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) | |
3043 | { | |
3044 | struct ipr_cmnd *reset_cmd; | |
3045 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
3046 | struct ipr_cmd_pkt *cmd_pkt; | |
3047 | unsigned long lock_flags = 0; | |
3048 | ||
3049 | ENTER; | |
3050 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
3051 | if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { | |
3052 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
3053 | return; | |
3054 | } | |
3055 | ||
3056 | ipr_sdev_err(ipr_cmd->u.sdev, "Abort timed out. Resetting bus\n"); | |
3057 | reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); | |
3058 | ipr_cmd->sibling = reset_cmd; | |
3059 | reset_cmd->sibling = ipr_cmd; | |
3060 | reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; | |
3061 | cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; | |
3062 | cmd_pkt->request_type = IPR_RQTYPE_IOACMD; | |
3063 | cmd_pkt->cdb[0] = IPR_RESET_DEVICE; | |
3064 | cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; | |
3065 | ||
3066 | ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); | |
3067 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
3068 | LEAVE; | |
3069 | } | |
3070 | ||
3071 | /** | |
3072 | * ipr_cancel_op - Cancel specified op | |
3073 | * @scsi_cmd: scsi command struct | |
3074 | * | |
3075 | * This function cancels specified op. | |
3076 | * | |
3077 | * Return value: | |
3078 | * SUCCESS / FAILED | |
3079 | **/ | |
3080 | static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) | |
3081 | { | |
3082 | struct ipr_cmnd *ipr_cmd; | |
3083 | struct ipr_ioa_cfg *ioa_cfg; | |
3084 | struct ipr_resource_entry *res; | |
3085 | struct ipr_cmd_pkt *cmd_pkt; | |
3086 | u32 ioasc; | |
3087 | int op_found = 0; | |
3088 | ||
3089 | ENTER; | |
3090 | ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; | |
3091 | res = scsi_cmd->device->hostdata; | |
3092 | ||
8fa728a2 JG |
3093 | /* If we are currently going through reset/reload, return failed. |
3094 | * This will force the mid-layer to call ipr_eh_host_reset, | |
3095 | * which will then go to sleep and wait for the reset to complete | |
3096 | */ | |
3097 | if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) | |
3098 | return FAILED; | |
1da177e4 LT |
3099 | if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res))) |
3100 | return FAILED; | |
3101 | ||
3102 | list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { | |
3103 | if (ipr_cmd->scsi_cmd == scsi_cmd) { | |
3104 | ipr_cmd->done = ipr_scsi_eh_done; | |
3105 | op_found = 1; | |
3106 | break; | |
3107 | } | |
3108 | } | |
3109 | ||
3110 | if (!op_found) | |
3111 | return SUCCESS; | |
3112 | ||
3113 | ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); | |
3114 | ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; | |
3115 | cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; | |
3116 | cmd_pkt->request_type = IPR_RQTYPE_IOACMD; | |
3117 | cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; | |
3118 | ipr_cmd->u.sdev = scsi_cmd->device; | |
3119 | ||
3120 | ipr_sdev_err(scsi_cmd->device, "Aborting command: %02X\n", scsi_cmd->cmnd[0]); | |
3121 | ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); | |
3122 | ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
3123 | ||
3124 | /* | |
3125 | * If the abort task timed out and we sent a bus reset, we will get | |
3126 | * one the following responses to the abort | |
3127 | */ | |
3128 | if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { | |
3129 | ioasc = 0; | |
3130 | ipr_trace; | |
3131 | } | |
3132 | ||
3133 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
3134 | res->needs_sync_complete = 1; | |
3135 | ||
3136 | LEAVE; | |
3137 | return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); | |
3138 | } | |
3139 | ||
3140 | /** | |
3141 | * ipr_eh_abort - Abort a single op | |
3142 | * @scsi_cmd: scsi command struct | |
3143 | * | |
3144 | * Return value: | |
3145 | * SUCCESS / FAILED | |
3146 | **/ | |
3147 | static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) | |
3148 | { | |
8fa728a2 JG |
3149 | unsigned long flags; |
3150 | int rc; | |
1da177e4 LT |
3151 | |
3152 | ENTER; | |
1da177e4 | 3153 | |
8fa728a2 JG |
3154 | spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); |
3155 | rc = ipr_cancel_op(scsi_cmd); | |
3156 | spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); | |
1da177e4 LT |
3157 | |
3158 | LEAVE; | |
8fa728a2 | 3159 | return rc; |
1da177e4 LT |
3160 | } |
3161 | ||
3162 | /** | |
3163 | * ipr_handle_other_interrupt - Handle "other" interrupts | |
3164 | * @ioa_cfg: ioa config struct | |
3165 | * @int_reg: interrupt register | |
3166 | * | |
3167 | * Return value: | |
3168 | * IRQ_NONE / IRQ_HANDLED | |
3169 | **/ | |
3170 | static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, | |
3171 | volatile u32 int_reg) | |
3172 | { | |
3173 | irqreturn_t rc = IRQ_HANDLED; | |
3174 | ||
3175 | if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { | |
3176 | /* Mask the interrupt */ | |
3177 | writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); | |
3178 | ||
3179 | /* Clear the interrupt */ | |
3180 | writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); | |
3181 | int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); | |
3182 | ||
3183 | list_del(&ioa_cfg->reset_cmd->queue); | |
3184 | del_timer(&ioa_cfg->reset_cmd->timer); | |
3185 | ipr_reset_ioa_job(ioa_cfg->reset_cmd); | |
3186 | } else { | |
3187 | if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) | |
3188 | ioa_cfg->ioa_unit_checked = 1; | |
3189 | else | |
3190 | dev_err(&ioa_cfg->pdev->dev, | |
3191 | "Permanent IOA failure. 0x%08X\n", int_reg); | |
3192 | ||
3193 | if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) | |
3194 | ioa_cfg->sdt_state = GET_DUMP; | |
3195 | ||
3196 | ipr_mask_and_clear_interrupts(ioa_cfg, ~0); | |
3197 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); | |
3198 | } | |
3199 | ||
3200 | return rc; | |
3201 | } | |
3202 | ||
3203 | /** | |
3204 | * ipr_isr - Interrupt service routine | |
3205 | * @irq: irq number | |
3206 | * @devp: pointer to ioa config struct | |
3207 | * @regs: pt_regs struct | |
3208 | * | |
3209 | * Return value: | |
3210 | * IRQ_NONE / IRQ_HANDLED | |
3211 | **/ | |
3212 | static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs) | |
3213 | { | |
3214 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; | |
3215 | unsigned long lock_flags = 0; | |
3216 | volatile u32 int_reg, int_mask_reg; | |
3217 | u32 ioasc; | |
3218 | u16 cmd_index; | |
3219 | struct ipr_cmnd *ipr_cmd; | |
3220 | irqreturn_t rc = IRQ_NONE; | |
3221 | ||
3222 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
3223 | ||
3224 | /* If interrupts are disabled, ignore the interrupt */ | |
3225 | if (!ioa_cfg->allow_interrupts) { | |
3226 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
3227 | return IRQ_NONE; | |
3228 | } | |
3229 | ||
3230 | int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); | |
3231 | int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; | |
3232 | ||
3233 | /* If an interrupt on the adapter did not occur, ignore it */ | |
3234 | if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) { | |
3235 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
3236 | return IRQ_NONE; | |
3237 | } | |
3238 | ||
3239 | while (1) { | |
3240 | ipr_cmd = NULL; | |
3241 | ||
3242 | while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == | |
3243 | ioa_cfg->toggle_bit) { | |
3244 | ||
3245 | cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & | |
3246 | IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; | |
3247 | ||
3248 | if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { | |
3249 | ioa_cfg->errors_logged++; | |
3250 | dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n"); | |
3251 | ||
3252 | if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) | |
3253 | ioa_cfg->sdt_state = GET_DUMP; | |
3254 | ||
3255 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); | |
3256 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
3257 | return IRQ_HANDLED; | |
3258 | } | |
3259 | ||
3260 | ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; | |
3261 | ||
3262 | ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
3263 | ||
3264 | ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); | |
3265 | ||
3266 | list_del(&ipr_cmd->queue); | |
3267 | del_timer(&ipr_cmd->timer); | |
3268 | ipr_cmd->done(ipr_cmd); | |
3269 | ||
3270 | rc = IRQ_HANDLED; | |
3271 | ||
3272 | if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { | |
3273 | ioa_cfg->hrrq_curr++; | |
3274 | } else { | |
3275 | ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; | |
3276 | ioa_cfg->toggle_bit ^= 1u; | |
3277 | } | |
3278 | } | |
3279 | ||
3280 | if (ipr_cmd != NULL) { | |
3281 | /* Clear the PCI interrupt */ | |
3282 | writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg); | |
3283 | int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; | |
3284 | } else | |
3285 | break; | |
3286 | } | |
3287 | ||
3288 | if (unlikely(rc == IRQ_NONE)) | |
3289 | rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); | |
3290 | ||
3291 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
3292 | return rc; | |
3293 | } | |
3294 | ||
3295 | /** | |
3296 | * ipr_build_ioadl - Build a scatter/gather list and map the buffer | |
3297 | * @ioa_cfg: ioa config struct | |
3298 | * @ipr_cmd: ipr command struct | |
3299 | * | |
3300 | * Return value: | |
3301 | * 0 on success / -1 on failure | |
3302 | **/ | |
3303 | static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, | |
3304 | struct ipr_cmnd *ipr_cmd) | |
3305 | { | |
3306 | int i; | |
3307 | struct scatterlist *sglist; | |
3308 | u32 length; | |
3309 | u32 ioadl_flags = 0; | |
3310 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; | |
3311 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; | |
3312 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; | |
3313 | ||
3314 | length = scsi_cmd->request_bufflen; | |
3315 | ||
3316 | if (length == 0) | |
3317 | return 0; | |
3318 | ||
3319 | if (scsi_cmd->use_sg) { | |
3320 | ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, | |
3321 | scsi_cmd->request_buffer, | |
3322 | scsi_cmd->use_sg, | |
3323 | scsi_cmd->sc_data_direction); | |
3324 | ||
3325 | if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { | |
3326 | ioadl_flags = IPR_IOADL_FLAGS_WRITE; | |
3327 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; | |
3328 | ioarcb->write_data_transfer_length = cpu_to_be32(length); | |
3329 | ioarcb->write_ioadl_len = | |
3330 | cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); | |
3331 | } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { | |
3332 | ioadl_flags = IPR_IOADL_FLAGS_READ; | |
3333 | ioarcb->read_data_transfer_length = cpu_to_be32(length); | |
3334 | ioarcb->read_ioadl_len = | |
3335 | cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); | |
3336 | } | |
3337 | ||
3338 | sglist = scsi_cmd->request_buffer; | |
3339 | ||
3340 | for (i = 0; i < ipr_cmd->dma_use_sg; i++) { | |
3341 | ioadl[i].flags_and_data_len = | |
3342 | cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i])); | |
3343 | ioadl[i].address = | |
3344 | cpu_to_be32(sg_dma_address(&sglist[i])); | |
3345 | } | |
3346 | ||
3347 | if (likely(ipr_cmd->dma_use_sg)) { | |
3348 | ioadl[i-1].flags_and_data_len |= | |
3349 | cpu_to_be32(IPR_IOADL_FLAGS_LAST); | |
3350 | return 0; | |
3351 | } else | |
3352 | dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); | |
3353 | } else { | |
3354 | if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { | |
3355 | ioadl_flags = IPR_IOADL_FLAGS_WRITE; | |
3356 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; | |
3357 | ioarcb->write_data_transfer_length = cpu_to_be32(length); | |
3358 | ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); | |
3359 | } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { | |
3360 | ioadl_flags = IPR_IOADL_FLAGS_READ; | |
3361 | ioarcb->read_data_transfer_length = cpu_to_be32(length); | |
3362 | ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); | |
3363 | } | |
3364 | ||
3365 | ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev, | |
3366 | scsi_cmd->request_buffer, length, | |
3367 | scsi_cmd->sc_data_direction); | |
3368 | ||
3369 | if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) { | |
3370 | ipr_cmd->dma_use_sg = 1; | |
3371 | ioadl[0].flags_and_data_len = | |
3372 | cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST); | |
3373 | ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle); | |
3374 | return 0; | |
3375 | } else | |
3376 | dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n"); | |
3377 | } | |
3378 | ||
3379 | return -1; | |
3380 | } | |
3381 | ||
3382 | /** | |
3383 | * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes | |
3384 | * @scsi_cmd: scsi command struct | |
3385 | * | |
3386 | * Return value: | |
3387 | * task attributes | |
3388 | **/ | |
3389 | static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) | |
3390 | { | |
3391 | u8 tag[2]; | |
3392 | u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; | |
3393 | ||
3394 | if (scsi_populate_tag_msg(scsi_cmd, tag)) { | |
3395 | switch (tag[0]) { | |
3396 | case MSG_SIMPLE_TAG: | |
3397 | rc = IPR_FLAGS_LO_SIMPLE_TASK; | |
3398 | break; | |
3399 | case MSG_HEAD_TAG: | |
3400 | rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; | |
3401 | break; | |
3402 | case MSG_ORDERED_TAG: | |
3403 | rc = IPR_FLAGS_LO_ORDERED_TASK; | |
3404 | break; | |
3405 | }; | |
3406 | } | |
3407 | ||
3408 | return rc; | |
3409 | } | |
3410 | ||
3411 | /** | |
3412 | * ipr_erp_done - Process completion of ERP for a device | |
3413 | * @ipr_cmd: ipr command struct | |
3414 | * | |
3415 | * This function copies the sense buffer into the scsi_cmd | |
3416 | * struct and pushes the scsi_done function. | |
3417 | * | |
3418 | * Return value: | |
3419 | * nothing | |
3420 | **/ | |
3421 | static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) | |
3422 | { | |
3423 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; | |
3424 | struct ipr_resource_entry *res = scsi_cmd->device->hostdata; | |
3425 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
3426 | u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
3427 | ||
3428 | if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { | |
3429 | scsi_cmd->result |= (DID_ERROR << 16); | |
3430 | ipr_sdev_err(scsi_cmd->device, | |
3431 | "Request Sense failed with IOASC: 0x%08X\n", ioasc); | |
3432 | } else { | |
3433 | memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, | |
3434 | SCSI_SENSE_BUFFERSIZE); | |
3435 | } | |
3436 | ||
3437 | if (res) { | |
3438 | res->needs_sync_complete = 1; | |
3439 | res->in_erp = 0; | |
3440 | } | |
3441 | ipr_unmap_sglist(ioa_cfg, ipr_cmd); | |
3442 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
3443 | scsi_cmd->scsi_done(scsi_cmd); | |
3444 | } | |
3445 | ||
3446 | /** | |
3447 | * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP | |
3448 | * @ipr_cmd: ipr command struct | |
3449 | * | |
3450 | * Return value: | |
3451 | * none | |
3452 | **/ | |
3453 | static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) | |
3454 | { | |
3455 | struct ipr_ioarcb *ioarcb; | |
3456 | struct ipr_ioasa *ioasa; | |
3457 | ||
3458 | ioarcb = &ipr_cmd->ioarcb; | |
3459 | ioasa = &ipr_cmd->ioasa; | |
3460 | ||
3461 | memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); | |
3462 | ioarcb->write_data_transfer_length = 0; | |
3463 | ioarcb->read_data_transfer_length = 0; | |
3464 | ioarcb->write_ioadl_len = 0; | |
3465 | ioarcb->read_ioadl_len = 0; | |
3466 | ioasa->ioasc = 0; | |
3467 | ioasa->residual_data_len = 0; | |
3468 | } | |
3469 | ||
3470 | /** | |
3471 | * ipr_erp_request_sense - Send request sense to a device | |
3472 | * @ipr_cmd: ipr command struct | |
3473 | * | |
3474 | * This function sends a request sense to a device as a result | |
3475 | * of a check condition. | |
3476 | * | |
3477 | * Return value: | |
3478 | * nothing | |
3479 | **/ | |
3480 | static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) | |
3481 | { | |
3482 | struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; | |
3483 | u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
3484 | ||
3485 | if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { | |
3486 | ipr_erp_done(ipr_cmd); | |
3487 | return; | |
3488 | } | |
3489 | ||
3490 | ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); | |
3491 | ||
3492 | cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; | |
3493 | cmd_pkt->cdb[0] = REQUEST_SENSE; | |
3494 | cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; | |
3495 | cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; | |
3496 | cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; | |
3497 | cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); | |
3498 | ||
3499 | ipr_cmd->ioadl[0].flags_and_data_len = | |
3500 | cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE); | |
3501 | ipr_cmd->ioadl[0].address = | |
3502 | cpu_to_be32(ipr_cmd->sense_buffer_dma); | |
3503 | ||
3504 | ipr_cmd->ioarcb.read_ioadl_len = | |
3505 | cpu_to_be32(sizeof(struct ipr_ioadl_desc)); | |
3506 | ipr_cmd->ioarcb.read_data_transfer_length = | |
3507 | cpu_to_be32(SCSI_SENSE_BUFFERSIZE); | |
3508 | ||
3509 | ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, | |
3510 | IPR_REQUEST_SENSE_TIMEOUT * 2); | |
3511 | } | |
3512 | ||
3513 | /** | |
3514 | * ipr_erp_cancel_all - Send cancel all to a device | |
3515 | * @ipr_cmd: ipr command struct | |
3516 | * | |
3517 | * This function sends a cancel all to a device to clear the | |
3518 | * queue. If we are running TCQ on the device, QERR is set to 1, | |
3519 | * which means all outstanding ops have been dropped on the floor. | |
3520 | * Cancel all will return them to us. | |
3521 | * | |
3522 | * Return value: | |
3523 | * nothing | |
3524 | **/ | |
3525 | static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) | |
3526 | { | |
3527 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; | |
3528 | struct ipr_resource_entry *res = scsi_cmd->device->hostdata; | |
3529 | struct ipr_cmd_pkt *cmd_pkt; | |
3530 | ||
3531 | res->in_erp = 1; | |
3532 | ||
3533 | ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); | |
3534 | ||
3535 | if (!scsi_get_tag_type(scsi_cmd->device)) { | |
3536 | ipr_erp_request_sense(ipr_cmd); | |
3537 | return; | |
3538 | } | |
3539 | ||
3540 | cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; | |
3541 | cmd_pkt->request_type = IPR_RQTYPE_IOACMD; | |
3542 | cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; | |
3543 | ||
3544 | ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, | |
3545 | IPR_CANCEL_ALL_TIMEOUT); | |
3546 | } | |
3547 | ||
3548 | /** | |
3549 | * ipr_dump_ioasa - Dump contents of IOASA | |
3550 | * @ioa_cfg: ioa config struct | |
3551 | * @ipr_cmd: ipr command struct | |
3552 | * | |
3553 | * This function is invoked by the interrupt handler when ops | |
3554 | * fail. It will log the IOASA if appropriate. Only called | |
3555 | * for GPDD ops. | |
3556 | * | |
3557 | * Return value: | |
3558 | * none | |
3559 | **/ | |
3560 | static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, | |
3561 | struct ipr_cmnd *ipr_cmd) | |
3562 | { | |
3563 | int i; | |
3564 | u16 data_len; | |
3565 | u32 ioasc; | |
3566 | struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; | |
3567 | __be32 *ioasa_data = (__be32 *)ioasa; | |
3568 | int error_index; | |
3569 | ||
3570 | ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK; | |
3571 | ||
3572 | if (0 == ioasc) | |
3573 | return; | |
3574 | ||
3575 | if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) | |
3576 | return; | |
3577 | ||
3578 | error_index = ipr_get_error(ioasc); | |
3579 | ||
3580 | if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { | |
3581 | /* Don't log an error if the IOA already logged one */ | |
3582 | if (ioasa->ilid != 0) | |
3583 | return; | |
3584 | ||
3585 | if (ipr_error_table[error_index].log_ioasa == 0) | |
3586 | return; | |
3587 | } | |
3588 | ||
3589 | ipr_sdev_err(ipr_cmd->scsi_cmd->device, "%s\n", | |
3590 | ipr_error_table[error_index].error); | |
3591 | ||
3592 | if ((ioasa->u.gpdd.end_state <= ARRAY_SIZE(ipr_gpdd_dev_end_states)) && | |
3593 | (ioasa->u.gpdd.bus_phase <= ARRAY_SIZE(ipr_gpdd_dev_bus_phases))) { | |
3594 | ipr_sdev_err(ipr_cmd->scsi_cmd->device, | |
3595 | "Device End state: %s Phase: %s\n", | |
3596 | ipr_gpdd_dev_end_states[ioasa->u.gpdd.end_state], | |
3597 | ipr_gpdd_dev_bus_phases[ioasa->u.gpdd.bus_phase]); | |
3598 | } | |
3599 | ||
3600 | if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len)) | |
3601 | data_len = sizeof(struct ipr_ioasa); | |
3602 | else | |
3603 | data_len = be16_to_cpu(ioasa->ret_stat_len); | |
3604 | ||
3605 | ipr_err("IOASA Dump:\n"); | |
3606 | ||
3607 | for (i = 0; i < data_len / 4; i += 4) { | |
3608 | ipr_err("%08X: %08X %08X %08X %08X\n", i*4, | |
3609 | be32_to_cpu(ioasa_data[i]), | |
3610 | be32_to_cpu(ioasa_data[i+1]), | |
3611 | be32_to_cpu(ioasa_data[i+2]), | |
3612 | be32_to_cpu(ioasa_data[i+3])); | |
3613 | } | |
3614 | } | |
3615 | ||
3616 | /** | |
3617 | * ipr_gen_sense - Generate SCSI sense data from an IOASA | |
3618 | * @ioasa: IOASA | |
3619 | * @sense_buf: sense data buffer | |
3620 | * | |
3621 | * Return value: | |
3622 | * none | |
3623 | **/ | |
3624 | static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) | |
3625 | { | |
3626 | u32 failing_lba; | |
3627 | u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; | |
3628 | struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; | |
3629 | struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; | |
3630 | u32 ioasc = be32_to_cpu(ioasa->ioasc); | |
3631 | ||
3632 | memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); | |
3633 | ||
3634 | if (ioasc >= IPR_FIRST_DRIVER_IOASC) | |
3635 | return; | |
3636 | ||
3637 | ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; | |
3638 | ||
3639 | if (ipr_is_vset_device(res) && | |
3640 | ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && | |
3641 | ioasa->u.vset.failing_lba_hi != 0) { | |
3642 | sense_buf[0] = 0x72; | |
3643 | sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); | |
3644 | sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); | |
3645 | sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); | |
3646 | ||
3647 | sense_buf[7] = 12; | |
3648 | sense_buf[8] = 0; | |
3649 | sense_buf[9] = 0x0A; | |
3650 | sense_buf[10] = 0x80; | |
3651 | ||
3652 | failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); | |
3653 | ||
3654 | sense_buf[12] = (failing_lba & 0xff000000) >> 24; | |
3655 | sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; | |
3656 | sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; | |
3657 | sense_buf[15] = failing_lba & 0x000000ff; | |
3658 | ||
3659 | failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); | |
3660 | ||
3661 | sense_buf[16] = (failing_lba & 0xff000000) >> 24; | |
3662 | sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; | |
3663 | sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; | |
3664 | sense_buf[19] = failing_lba & 0x000000ff; | |
3665 | } else { | |
3666 | sense_buf[0] = 0x70; | |
3667 | sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); | |
3668 | sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); | |
3669 | sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); | |
3670 | ||
3671 | /* Illegal request */ | |
3672 | if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && | |
3673 | (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) { | |
3674 | sense_buf[7] = 10; /* additional length */ | |
3675 | ||
3676 | /* IOARCB was in error */ | |
3677 | if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) | |
3678 | sense_buf[15] = 0xC0; | |
3679 | else /* Parameter data was invalid */ | |
3680 | sense_buf[15] = 0x80; | |
3681 | ||
3682 | sense_buf[16] = | |
3683 | ((IPR_FIELD_POINTER_MASK & | |
3684 | be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff; | |
3685 | sense_buf[17] = | |
3686 | (IPR_FIELD_POINTER_MASK & | |
3687 | be32_to_cpu(ioasa->ioasc_specific)) & 0xff; | |
3688 | } else { | |
3689 | if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { | |
3690 | if (ipr_is_vset_device(res)) | |
3691 | failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); | |
3692 | else | |
3693 | failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); | |
3694 | ||
3695 | sense_buf[0] |= 0x80; /* Or in the Valid bit */ | |
3696 | sense_buf[3] = (failing_lba & 0xff000000) >> 24; | |
3697 | sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; | |
3698 | sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; | |
3699 | sense_buf[6] = failing_lba & 0x000000ff; | |
3700 | } | |
3701 | ||
3702 | sense_buf[7] = 6; /* additional length */ | |
3703 | } | |
3704 | } | |
3705 | } | |
3706 | ||
3707 | /** | |
3708 | * ipr_erp_start - Process an error response for a SCSI op | |
3709 | * @ioa_cfg: ioa config struct | |
3710 | * @ipr_cmd: ipr command struct | |
3711 | * | |
3712 | * This function determines whether or not to initiate ERP | |
3713 | * on the affected device. | |
3714 | * | |
3715 | * Return value: | |
3716 | * nothing | |
3717 | **/ | |
3718 | static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, | |
3719 | struct ipr_cmnd *ipr_cmd) | |
3720 | { | |
3721 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; | |
3722 | struct ipr_resource_entry *res = scsi_cmd->device->hostdata; | |
3723 | u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
3724 | ||
3725 | if (!res) { | |
3726 | ipr_scsi_eh_done(ipr_cmd); | |
3727 | return; | |
3728 | } | |
3729 | ||
3730 | if (ipr_is_gscsi(res)) | |
3731 | ipr_dump_ioasa(ioa_cfg, ipr_cmd); | |
3732 | else | |
3733 | ipr_gen_sense(ipr_cmd); | |
3734 | ||
3735 | switch (ioasc & IPR_IOASC_IOASC_MASK) { | |
3736 | case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: | |
3737 | scsi_cmd->result |= (DID_IMM_RETRY << 16); | |
3738 | break; | |
3739 | case IPR_IOASC_IR_RESOURCE_HANDLE: | |
3740 | scsi_cmd->result |= (DID_NO_CONNECT << 16); | |
3741 | break; | |
3742 | case IPR_IOASC_HW_SEL_TIMEOUT: | |
3743 | scsi_cmd->result |= (DID_NO_CONNECT << 16); | |
3744 | res->needs_sync_complete = 1; | |
3745 | break; | |
3746 | case IPR_IOASC_SYNC_REQUIRED: | |
3747 | if (!res->in_erp) | |
3748 | res->needs_sync_complete = 1; | |
3749 | scsi_cmd->result |= (DID_IMM_RETRY << 16); | |
3750 | break; | |
3751 | case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ | |
3752 | scsi_cmd->result |= (DID_PASSTHROUGH << 16); | |
3753 | break; | |
3754 | case IPR_IOASC_BUS_WAS_RESET: | |
3755 | case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: | |
3756 | /* | |
3757 | * Report the bus reset and ask for a retry. The device | |
3758 | * will give CC/UA the next command. | |
3759 | */ | |
3760 | if (!res->resetting_device) | |
3761 | scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); | |
3762 | scsi_cmd->result |= (DID_ERROR << 16); | |
3763 | res->needs_sync_complete = 1; | |
3764 | break; | |
3765 | case IPR_IOASC_HW_DEV_BUS_STATUS: | |
3766 | scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); | |
3767 | if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { | |
3768 | ipr_erp_cancel_all(ipr_cmd); | |
3769 | return; | |
3770 | } | |
3771 | res->needs_sync_complete = 1; | |
3772 | break; | |
3773 | case IPR_IOASC_NR_INIT_CMD_REQUIRED: | |
3774 | break; | |
3775 | default: | |
3776 | scsi_cmd->result |= (DID_ERROR << 16); | |
3777 | if (!ipr_is_vset_device(res)) | |
3778 | res->needs_sync_complete = 1; | |
3779 | break; | |
3780 | } | |
3781 | ||
3782 | ipr_unmap_sglist(ioa_cfg, ipr_cmd); | |
3783 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
3784 | scsi_cmd->scsi_done(scsi_cmd); | |
3785 | } | |
3786 | ||
3787 | /** | |
3788 | * ipr_scsi_done - mid-layer done function | |
3789 | * @ipr_cmd: ipr command struct | |
3790 | * | |
3791 | * This function is invoked by the interrupt handler for | |
3792 | * ops generated by the SCSI mid-layer | |
3793 | * | |
3794 | * Return value: | |
3795 | * none | |
3796 | **/ | |
3797 | static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) | |
3798 | { | |
3799 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
3800 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; | |
3801 | u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
3802 | ||
3803 | scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len); | |
3804 | ||
3805 | if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { | |
3806 | ipr_unmap_sglist(ioa_cfg, ipr_cmd); | |
3807 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
3808 | scsi_cmd->scsi_done(scsi_cmd); | |
3809 | } else | |
3810 | ipr_erp_start(ioa_cfg, ipr_cmd); | |
3811 | } | |
3812 | ||
3813 | /** | |
3814 | * ipr_save_ioafp_mode_select - Save adapters mode select data | |
3815 | * @ioa_cfg: ioa config struct | |
3816 | * @scsi_cmd: scsi command struct | |
3817 | * | |
3818 | * This function saves mode select data for the adapter to | |
3819 | * use following an adapter reset. | |
3820 | * | |
3821 | * Return value: | |
3822 | * 0 on success / SCSI_MLQUEUE_HOST_BUSY on failure | |
3823 | **/ | |
3824 | static int ipr_save_ioafp_mode_select(struct ipr_ioa_cfg *ioa_cfg, | |
3825 | struct scsi_cmnd *scsi_cmd) | |
3826 | { | |
3827 | if (!ioa_cfg->saved_mode_pages) { | |
3828 | ioa_cfg->saved_mode_pages = kmalloc(sizeof(struct ipr_mode_pages), | |
3829 | GFP_ATOMIC); | |
3830 | if (!ioa_cfg->saved_mode_pages) { | |
3831 | dev_err(&ioa_cfg->pdev->dev, | |
3832 | "IOA mode select buffer allocation failed\n"); | |
3833 | return SCSI_MLQUEUE_HOST_BUSY; | |
3834 | } | |
3835 | } | |
3836 | ||
3837 | memcpy(ioa_cfg->saved_mode_pages, scsi_cmd->buffer, scsi_cmd->cmnd[4]); | |
3838 | ioa_cfg->saved_mode_page_len = scsi_cmd->cmnd[4]; | |
3839 | return 0; | |
3840 | } | |
3841 | ||
3842 | /** | |
3843 | * ipr_queuecommand - Queue a mid-layer request | |
3844 | * @scsi_cmd: scsi command struct | |
3845 | * @done: done function | |
3846 | * | |
3847 | * This function queues a request generated by the mid-layer. | |
3848 | * | |
3849 | * Return value: | |
3850 | * 0 on success | |
3851 | * SCSI_MLQUEUE_DEVICE_BUSY if device is busy | |
3852 | * SCSI_MLQUEUE_HOST_BUSY if host is busy | |
3853 | **/ | |
3854 | static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, | |
3855 | void (*done) (struct scsi_cmnd *)) | |
3856 | { | |
3857 | struct ipr_ioa_cfg *ioa_cfg; | |
3858 | struct ipr_resource_entry *res; | |
3859 | struct ipr_ioarcb *ioarcb; | |
3860 | struct ipr_cmnd *ipr_cmd; | |
3861 | int rc = 0; | |
3862 | ||
3863 | scsi_cmd->scsi_done = done; | |
3864 | ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; | |
3865 | res = scsi_cmd->device->hostdata; | |
3866 | scsi_cmd->result = (DID_OK << 16); | |
3867 | ||
3868 | /* | |
3869 | * We are currently blocking all devices due to a host reset | |
3870 | * We have told the host to stop giving us new requests, but | |
3871 | * ERP ops don't count. FIXME | |
3872 | */ | |
3873 | if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) | |
3874 | return SCSI_MLQUEUE_HOST_BUSY; | |
3875 | ||
3876 | /* | |
3877 | * FIXME - Create scsi_set_host_offline interface | |
3878 | * and the ioa_is_dead check can be removed | |
3879 | */ | |
3880 | if (unlikely(ioa_cfg->ioa_is_dead || !res)) { | |
3881 | memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); | |
3882 | scsi_cmd->result = (DID_NO_CONNECT << 16); | |
3883 | scsi_cmd->scsi_done(scsi_cmd); | |
3884 | return 0; | |
3885 | } | |
3886 | ||
3887 | ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); | |
3888 | ioarcb = &ipr_cmd->ioarcb; | |
3889 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); | |
3890 | ||
3891 | memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); | |
3892 | ipr_cmd->scsi_cmd = scsi_cmd; | |
3893 | ioarcb->res_handle = res->cfgte.res_handle; | |
3894 | ipr_cmd->done = ipr_scsi_done; | |
3895 | ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); | |
3896 | ||
3897 | if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { | |
3898 | if (scsi_cmd->underflow == 0) | |
3899 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; | |
3900 | ||
3901 | if (res->needs_sync_complete) { | |
3902 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; | |
3903 | res->needs_sync_complete = 0; | |
3904 | } | |
3905 | ||
3906 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; | |
3907 | ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; | |
3908 | ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; | |
3909 | ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); | |
3910 | } | |
3911 | ||
3912 | if (scsi_cmd->cmnd[0] >= 0xC0 && | |
3913 | (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) | |
3914 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; | |
3915 | ||
3916 | if (ipr_is_ioa_resource(res) && scsi_cmd->cmnd[0] == MODE_SELECT) | |
3917 | rc = ipr_save_ioafp_mode_select(ioa_cfg, scsi_cmd); | |
3918 | ||
3919 | if (likely(rc == 0)) | |
3920 | rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); | |
3921 | ||
3922 | if (likely(rc == 0)) { | |
3923 | mb(); | |
3924 | writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), | |
3925 | ioa_cfg->regs.ioarrin_reg); | |
3926 | } else { | |
3927 | list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
3928 | return SCSI_MLQUEUE_HOST_BUSY; | |
3929 | } | |
3930 | ||
3931 | return 0; | |
3932 | } | |
3933 | ||
3934 | /** | |
3935 | * ipr_info - Get information about the card/driver | |
3936 | * @scsi_host: scsi host struct | |
3937 | * | |
3938 | * Return value: | |
3939 | * pointer to buffer with description string | |
3940 | **/ | |
3941 | static const char * ipr_ioa_info(struct Scsi_Host *host) | |
3942 | { | |
3943 | static char buffer[512]; | |
3944 | struct ipr_ioa_cfg *ioa_cfg; | |
3945 | unsigned long lock_flags = 0; | |
3946 | ||
3947 | ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; | |
3948 | ||
3949 | spin_lock_irqsave(host->host_lock, lock_flags); | |
3950 | sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); | |
3951 | spin_unlock_irqrestore(host->host_lock, lock_flags); | |
3952 | ||
3953 | return buffer; | |
3954 | } | |
3955 | ||
3956 | static struct scsi_host_template driver_template = { | |
3957 | .module = THIS_MODULE, | |
3958 | .name = "IPR", | |
3959 | .info = ipr_ioa_info, | |
3960 | .queuecommand = ipr_queuecommand, | |
3961 | .eh_abort_handler = ipr_eh_abort, | |
3962 | .eh_device_reset_handler = ipr_eh_dev_reset, | |
3963 | .eh_host_reset_handler = ipr_eh_host_reset, | |
3964 | .slave_alloc = ipr_slave_alloc, | |
3965 | .slave_configure = ipr_slave_configure, | |
3966 | .slave_destroy = ipr_slave_destroy, | |
3967 | .change_queue_depth = ipr_change_queue_depth, | |
3968 | .change_queue_type = ipr_change_queue_type, | |
3969 | .bios_param = ipr_biosparam, | |
3970 | .can_queue = IPR_MAX_COMMANDS, | |
3971 | .this_id = -1, | |
3972 | .sg_tablesize = IPR_MAX_SGLIST, | |
3973 | .max_sectors = IPR_IOA_MAX_SECTORS, | |
3974 | .cmd_per_lun = IPR_MAX_CMD_PER_LUN, | |
3975 | .use_clustering = ENABLE_CLUSTERING, | |
3976 | .shost_attrs = ipr_ioa_attrs, | |
3977 | .sdev_attrs = ipr_dev_attrs, | |
3978 | .proc_name = IPR_NAME | |
3979 | }; | |
3980 | ||
3981 | #ifdef CONFIG_PPC_PSERIES | |
3982 | static const u16 ipr_blocked_processors[] = { | |
3983 | PV_NORTHSTAR, | |
3984 | PV_PULSAR, | |
3985 | PV_POWER4, | |
3986 | PV_ICESTAR, | |
3987 | PV_SSTAR, | |
3988 | PV_POWER4p, | |
3989 | PV_630, | |
3990 | PV_630p | |
3991 | }; | |
3992 | ||
3993 | /** | |
3994 | * ipr_invalid_adapter - Determine if this adapter is supported on this hardware | |
3995 | * @ioa_cfg: ioa cfg struct | |
3996 | * | |
3997 | * Adapters that use Gemstone revision < 3.1 do not work reliably on | |
3998 | * certain pSeries hardware. This function determines if the given | |
3999 | * adapter is in one of these confgurations or not. | |
4000 | * | |
4001 | * Return value: | |
4002 | * 1 if adapter is not supported / 0 if adapter is supported | |
4003 | **/ | |
4004 | static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) | |
4005 | { | |
4006 | u8 rev_id; | |
4007 | int i; | |
4008 | ||
4009 | if (ioa_cfg->type == 0x5702) { | |
4010 | if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID, | |
4011 | &rev_id) == PCIBIOS_SUCCESSFUL) { | |
4012 | if (rev_id < 4) { | |
4013 | for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ | |
4014 | if (__is_processor(ipr_blocked_processors[i])) | |
4015 | return 1; | |
4016 | } | |
4017 | } | |
4018 | } | |
4019 | } | |
4020 | return 0; | |
4021 | } | |
4022 | #else | |
4023 | #define ipr_invalid_adapter(ioa_cfg) 0 | |
4024 | #endif | |
4025 | ||
4026 | /** | |
4027 | * ipr_ioa_bringdown_done - IOA bring down completion. | |
4028 | * @ipr_cmd: ipr command struct | |
4029 | * | |
4030 | * This function processes the completion of an adapter bring down. | |
4031 | * It wakes any reset sleepers. | |
4032 | * | |
4033 | * Return value: | |
4034 | * IPR_RC_JOB_RETURN | |
4035 | **/ | |
4036 | static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) | |
4037 | { | |
4038 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4039 | ||
4040 | ENTER; | |
4041 | ioa_cfg->in_reset_reload = 0; | |
4042 | ioa_cfg->reset_retries = 0; | |
4043 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
4044 | wake_up_all(&ioa_cfg->reset_wait_q); | |
4045 | ||
4046 | spin_unlock_irq(ioa_cfg->host->host_lock); | |
4047 | scsi_unblock_requests(ioa_cfg->host); | |
4048 | spin_lock_irq(ioa_cfg->host->host_lock); | |
4049 | LEAVE; | |
4050 | ||
4051 | return IPR_RC_JOB_RETURN; | |
4052 | } | |
4053 | ||
4054 | /** | |
4055 | * ipr_ioa_reset_done - IOA reset completion. | |
4056 | * @ipr_cmd: ipr command struct | |
4057 | * | |
4058 | * This function processes the completion of an adapter reset. | |
4059 | * It schedules any necessary mid-layer add/removes and | |
4060 | * wakes any reset sleepers. | |
4061 | * | |
4062 | * Return value: | |
4063 | * IPR_RC_JOB_RETURN | |
4064 | **/ | |
4065 | static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) | |
4066 | { | |
4067 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4068 | struct ipr_resource_entry *res; | |
4069 | struct ipr_hostrcb *hostrcb, *temp; | |
4070 | int i = 0; | |
4071 | ||
4072 | ENTER; | |
4073 | ioa_cfg->in_reset_reload = 0; | |
4074 | ioa_cfg->allow_cmds = 1; | |
4075 | ioa_cfg->reset_cmd = NULL; | |
4076 | ||
4077 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { | |
4078 | if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { | |
4079 | ipr_trace; | |
4080 | break; | |
4081 | } | |
4082 | } | |
4083 | schedule_work(&ioa_cfg->work_q); | |
4084 | ||
4085 | list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { | |
4086 | list_del(&hostrcb->queue); | |
4087 | if (i++ < IPR_NUM_LOG_HCAMS) | |
4088 | ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); | |
4089 | else | |
4090 | ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); | |
4091 | } | |
4092 | ||
4093 | dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); | |
4094 | ||
4095 | ioa_cfg->reset_retries = 0; | |
4096 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
4097 | wake_up_all(&ioa_cfg->reset_wait_q); | |
4098 | ||
4099 | spin_unlock_irq(ioa_cfg->host->host_lock); | |
4100 | scsi_unblock_requests(ioa_cfg->host); | |
4101 | spin_lock_irq(ioa_cfg->host->host_lock); | |
4102 | ||
4103 | if (!ioa_cfg->allow_cmds) | |
4104 | scsi_block_requests(ioa_cfg->host); | |
4105 | ||
4106 | LEAVE; | |
4107 | return IPR_RC_JOB_RETURN; | |
4108 | } | |
4109 | ||
4110 | /** | |
4111 | * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer | |
4112 | * @supported_dev: supported device struct | |
4113 | * @vpids: vendor product id struct | |
4114 | * | |
4115 | * Return value: | |
4116 | * none | |
4117 | **/ | |
4118 | static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, | |
4119 | struct ipr_std_inq_vpids *vpids) | |
4120 | { | |
4121 | memset(supported_dev, 0, sizeof(struct ipr_supported_device)); | |
4122 | memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); | |
4123 | supported_dev->num_records = 1; | |
4124 | supported_dev->data_length = | |
4125 | cpu_to_be16(sizeof(struct ipr_supported_device)); | |
4126 | supported_dev->reserved = 0; | |
4127 | } | |
4128 | ||
4129 | /** | |
4130 | * ipr_set_supported_devs - Send Set Supported Devices for a device | |
4131 | * @ipr_cmd: ipr command struct | |
4132 | * | |
4133 | * This function send a Set Supported Devices to the adapter | |
4134 | * | |
4135 | * Return value: | |
4136 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN | |
4137 | **/ | |
4138 | static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) | |
4139 | { | |
4140 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4141 | struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; | |
4142 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; | |
4143 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; | |
4144 | struct ipr_resource_entry *res = ipr_cmd->u.res; | |
4145 | ||
4146 | ipr_cmd->job_step = ipr_ioa_reset_done; | |
4147 | ||
4148 | list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { | |
4149 | if (!ipr_is_af_dasd_device(res)) | |
4150 | continue; | |
4151 | ||
4152 | ipr_cmd->u.res = res; | |
4153 | ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids); | |
4154 | ||
4155 | ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); | |
4156 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; | |
4157 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; | |
4158 | ||
4159 | ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; | |
4160 | ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; | |
4161 | ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; | |
4162 | ||
4163 | ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | | |
4164 | sizeof(struct ipr_supported_device)); | |
4165 | ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma + | |
4166 | offsetof(struct ipr_misc_cbs, supp_dev)); | |
4167 | ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); | |
4168 | ioarcb->write_data_transfer_length = | |
4169 | cpu_to_be32(sizeof(struct ipr_supported_device)); | |
4170 | ||
4171 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, | |
4172 | IPR_SET_SUP_DEVICE_TIMEOUT); | |
4173 | ||
4174 | ipr_cmd->job_step = ipr_set_supported_devs; | |
4175 | return IPR_RC_JOB_RETURN; | |
4176 | } | |
4177 | ||
4178 | return IPR_RC_JOB_CONTINUE; | |
4179 | } | |
4180 | ||
4181 | /** | |
4182 | * ipr_get_mode_page - Locate specified mode page | |
4183 | * @mode_pages: mode page buffer | |
4184 | * @page_code: page code to find | |
4185 | * @len: minimum required length for mode page | |
4186 | * | |
4187 | * Return value: | |
4188 | * pointer to mode page / NULL on failure | |
4189 | **/ | |
4190 | static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, | |
4191 | u32 page_code, u32 len) | |
4192 | { | |
4193 | struct ipr_mode_page_hdr *mode_hdr; | |
4194 | u32 page_length; | |
4195 | u32 length; | |
4196 | ||
4197 | if (!mode_pages || (mode_pages->hdr.length == 0)) | |
4198 | return NULL; | |
4199 | ||
4200 | length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; | |
4201 | mode_hdr = (struct ipr_mode_page_hdr *) | |
4202 | (mode_pages->data + mode_pages->hdr.block_desc_len); | |
4203 | ||
4204 | while (length) { | |
4205 | if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { | |
4206 | if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) | |
4207 | return mode_hdr; | |
4208 | break; | |
4209 | } else { | |
4210 | page_length = (sizeof(struct ipr_mode_page_hdr) + | |
4211 | mode_hdr->page_length); | |
4212 | length -= page_length; | |
4213 | mode_hdr = (struct ipr_mode_page_hdr *) | |
4214 | ((unsigned long)mode_hdr + page_length); | |
4215 | } | |
4216 | } | |
4217 | return NULL; | |
4218 | } | |
4219 | ||
4220 | /** | |
4221 | * ipr_check_term_power - Check for term power errors | |
4222 | * @ioa_cfg: ioa config struct | |
4223 | * @mode_pages: IOAFP mode pages buffer | |
4224 | * | |
4225 | * Check the IOAFP's mode page 28 for term power errors | |
4226 | * | |
4227 | * Return value: | |
4228 | * nothing | |
4229 | **/ | |
4230 | static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, | |
4231 | struct ipr_mode_pages *mode_pages) | |
4232 | { | |
4233 | int i; | |
4234 | int entry_length; | |
4235 | struct ipr_dev_bus_entry *bus; | |
4236 | struct ipr_mode_page28 *mode_page; | |
4237 | ||
4238 | mode_page = ipr_get_mode_page(mode_pages, 0x28, | |
4239 | sizeof(struct ipr_mode_page28)); | |
4240 | ||
4241 | entry_length = mode_page->entry_length; | |
4242 | ||
4243 | bus = mode_page->bus; | |
4244 | ||
4245 | for (i = 0; i < mode_page->num_entries; i++) { | |
4246 | if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { | |
4247 | dev_err(&ioa_cfg->pdev->dev, | |
4248 | "Term power is absent on scsi bus %d\n", | |
4249 | bus->res_addr.bus); | |
4250 | } | |
4251 | ||
4252 | bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); | |
4253 | } | |
4254 | } | |
4255 | ||
4256 | /** | |
4257 | * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table | |
4258 | * @ioa_cfg: ioa config struct | |
4259 | * | |
4260 | * Looks through the config table checking for SES devices. If | |
4261 | * the SES device is in the SES table indicating a maximum SCSI | |
4262 | * bus speed, the speed is limited for the bus. | |
4263 | * | |
4264 | * Return value: | |
4265 | * none | |
4266 | **/ | |
4267 | static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) | |
4268 | { | |
4269 | u32 max_xfer_rate; | |
4270 | int i; | |
4271 | ||
4272 | for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { | |
4273 | max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, | |
4274 | ioa_cfg->bus_attr[i].bus_width); | |
4275 | ||
4276 | if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) | |
4277 | ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; | |
4278 | } | |
4279 | } | |
4280 | ||
4281 | /** | |
4282 | * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 | |
4283 | * @ioa_cfg: ioa config struct | |
4284 | * @mode_pages: mode page 28 buffer | |
4285 | * | |
4286 | * Updates mode page 28 based on driver configuration | |
4287 | * | |
4288 | * Return value: | |
4289 | * none | |
4290 | **/ | |
4291 | static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, | |
4292 | struct ipr_mode_pages *mode_pages) | |
4293 | { | |
4294 | int i, entry_length; | |
4295 | struct ipr_dev_bus_entry *bus; | |
4296 | struct ipr_bus_attributes *bus_attr; | |
4297 | struct ipr_mode_page28 *mode_page; | |
4298 | ||
4299 | mode_page = ipr_get_mode_page(mode_pages, 0x28, | |
4300 | sizeof(struct ipr_mode_page28)); | |
4301 | ||
4302 | entry_length = mode_page->entry_length; | |
4303 | ||
4304 | /* Loop for each device bus entry */ | |
4305 | for (i = 0, bus = mode_page->bus; | |
4306 | i < mode_page->num_entries; | |
4307 | i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { | |
4308 | if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { | |
4309 | dev_err(&ioa_cfg->pdev->dev, | |
4310 | "Invalid resource address reported: 0x%08X\n", | |
4311 | IPR_GET_PHYS_LOC(bus->res_addr)); | |
4312 | continue; | |
4313 | } | |
4314 | ||
4315 | bus_attr = &ioa_cfg->bus_attr[i]; | |
4316 | bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; | |
4317 | bus->bus_width = bus_attr->bus_width; | |
4318 | bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); | |
4319 | bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; | |
4320 | if (bus_attr->qas_enabled) | |
4321 | bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; | |
4322 | else | |
4323 | bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; | |
4324 | } | |
4325 | } | |
4326 | ||
4327 | /** | |
4328 | * ipr_build_mode_select - Build a mode select command | |
4329 | * @ipr_cmd: ipr command struct | |
4330 | * @res_handle: resource handle to send command to | |
4331 | * @parm: Byte 2 of Mode Sense command | |
4332 | * @dma_addr: DMA buffer address | |
4333 | * @xfer_len: data transfer length | |
4334 | * | |
4335 | * Return value: | |
4336 | * none | |
4337 | **/ | |
4338 | static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, | |
4339 | __be32 res_handle, u8 parm, u32 dma_addr, | |
4340 | u8 xfer_len) | |
4341 | { | |
4342 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; | |
4343 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; | |
4344 | ||
4345 | ioarcb->res_handle = res_handle; | |
4346 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; | |
4347 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; | |
4348 | ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; | |
4349 | ioarcb->cmd_pkt.cdb[1] = parm; | |
4350 | ioarcb->cmd_pkt.cdb[4] = xfer_len; | |
4351 | ||
4352 | ioadl->flags_and_data_len = | |
4353 | cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len); | |
4354 | ioadl->address = cpu_to_be32(dma_addr); | |
4355 | ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); | |
4356 | ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len); | |
4357 | } | |
4358 | ||
4359 | /** | |
4360 | * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA | |
4361 | * @ipr_cmd: ipr command struct | |
4362 | * | |
4363 | * This function sets up the SCSI bus attributes and sends | |
4364 | * a Mode Select for Page 28 to activate them. | |
4365 | * | |
4366 | * Return value: | |
4367 | * IPR_RC_JOB_RETURN | |
4368 | **/ | |
4369 | static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) | |
4370 | { | |
4371 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4372 | struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; | |
4373 | int length; | |
4374 | ||
4375 | ENTER; | |
4376 | if (ioa_cfg->saved_mode_pages) { | |
4377 | memcpy(mode_pages, ioa_cfg->saved_mode_pages, | |
4378 | ioa_cfg->saved_mode_page_len); | |
4379 | length = ioa_cfg->saved_mode_page_len; | |
4380 | } else { | |
4381 | ipr_scsi_bus_speed_limit(ioa_cfg); | |
4382 | ipr_check_term_power(ioa_cfg, mode_pages); | |
4383 | ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); | |
4384 | length = mode_pages->hdr.length + 1; | |
4385 | mode_pages->hdr.length = 0; | |
4386 | } | |
4387 | ||
4388 | ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, | |
4389 | ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), | |
4390 | length); | |
4391 | ||
4392 | ipr_cmd->job_step = ipr_set_supported_devs; | |
4393 | ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, | |
4394 | struct ipr_resource_entry, queue); | |
4395 | ||
4396 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); | |
4397 | ||
4398 | LEAVE; | |
4399 | return IPR_RC_JOB_RETURN; | |
4400 | } | |
4401 | ||
4402 | /** | |
4403 | * ipr_build_mode_sense - Builds a mode sense command | |
4404 | * @ipr_cmd: ipr command struct | |
4405 | * @res: resource entry struct | |
4406 | * @parm: Byte 2 of mode sense command | |
4407 | * @dma_addr: DMA address of mode sense buffer | |
4408 | * @xfer_len: Size of DMA buffer | |
4409 | * | |
4410 | * Return value: | |
4411 | * none | |
4412 | **/ | |
4413 | static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, | |
4414 | __be32 res_handle, | |
4415 | u8 parm, u32 dma_addr, u8 xfer_len) | |
4416 | { | |
4417 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; | |
4418 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; | |
4419 | ||
4420 | ioarcb->res_handle = res_handle; | |
4421 | ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; | |
4422 | ioarcb->cmd_pkt.cdb[2] = parm; | |
4423 | ioarcb->cmd_pkt.cdb[4] = xfer_len; | |
4424 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; | |
4425 | ||
4426 | ioadl->flags_and_data_len = | |
4427 | cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); | |
4428 | ioadl->address = cpu_to_be32(dma_addr); | |
4429 | ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); | |
4430 | ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); | |
4431 | } | |
4432 | ||
4433 | /** | |
4434 | * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA | |
4435 | * @ipr_cmd: ipr command struct | |
4436 | * | |
4437 | * This function send a Page 28 mode sense to the IOA to | |
4438 | * retrieve SCSI bus attributes. | |
4439 | * | |
4440 | * Return value: | |
4441 | * IPR_RC_JOB_RETURN | |
4442 | **/ | |
4443 | static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) | |
4444 | { | |
4445 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4446 | ||
4447 | ENTER; | |
4448 | ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), | |
4449 | 0x28, ioa_cfg->vpd_cbs_dma + | |
4450 | offsetof(struct ipr_misc_cbs, mode_pages), | |
4451 | sizeof(struct ipr_mode_pages)); | |
4452 | ||
4453 | ipr_cmd->job_step = ipr_ioafp_mode_select_page28; | |
4454 | ||
4455 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); | |
4456 | ||
4457 | LEAVE; | |
4458 | return IPR_RC_JOB_RETURN; | |
4459 | } | |
4460 | ||
4461 | /** | |
4462 | * ipr_init_res_table - Initialize the resource table | |
4463 | * @ipr_cmd: ipr command struct | |
4464 | * | |
4465 | * This function looks through the existing resource table, comparing | |
4466 | * it with the config table. This function will take care of old/new | |
4467 | * devices and schedule adding/removing them from the mid-layer | |
4468 | * as appropriate. | |
4469 | * | |
4470 | * Return value: | |
4471 | * IPR_RC_JOB_CONTINUE | |
4472 | **/ | |
4473 | static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) | |
4474 | { | |
4475 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4476 | struct ipr_resource_entry *res, *temp; | |
4477 | struct ipr_config_table_entry *cfgte; | |
4478 | int found, i; | |
4479 | LIST_HEAD(old_res); | |
4480 | ||
4481 | ENTER; | |
4482 | if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ) | |
4483 | dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); | |
4484 | ||
4485 | list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) | |
4486 | list_move_tail(&res->queue, &old_res); | |
4487 | ||
4488 | for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) { | |
4489 | cfgte = &ioa_cfg->cfg_table->dev[i]; | |
4490 | found = 0; | |
4491 | ||
4492 | list_for_each_entry_safe(res, temp, &old_res, queue) { | |
4493 | if (!memcmp(&res->cfgte.res_addr, | |
4494 | &cfgte->res_addr, sizeof(cfgte->res_addr))) { | |
4495 | list_move_tail(&res->queue, &ioa_cfg->used_res_q); | |
4496 | found = 1; | |
4497 | break; | |
4498 | } | |
4499 | } | |
4500 | ||
4501 | if (!found) { | |
4502 | if (list_empty(&ioa_cfg->free_res_q)) { | |
4503 | dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); | |
4504 | break; | |
4505 | } | |
4506 | ||
4507 | found = 1; | |
4508 | res = list_entry(ioa_cfg->free_res_q.next, | |
4509 | struct ipr_resource_entry, queue); | |
4510 | list_move_tail(&res->queue, &ioa_cfg->used_res_q); | |
4511 | ipr_init_res_entry(res); | |
4512 | res->add_to_ml = 1; | |
4513 | } | |
4514 | ||
4515 | if (found) | |
4516 | memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); | |
4517 | } | |
4518 | ||
4519 | list_for_each_entry_safe(res, temp, &old_res, queue) { | |
4520 | if (res->sdev) { | |
4521 | res->del_from_ml = 1; | |
4522 | res->sdev->hostdata = NULL; | |
4523 | list_move_tail(&res->queue, &ioa_cfg->used_res_q); | |
4524 | } else { | |
4525 | list_move_tail(&res->queue, &ioa_cfg->free_res_q); | |
4526 | } | |
4527 | } | |
4528 | ||
4529 | ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; | |
4530 | ||
4531 | LEAVE; | |
4532 | return IPR_RC_JOB_CONTINUE; | |
4533 | } | |
4534 | ||
4535 | /** | |
4536 | * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. | |
4537 | * @ipr_cmd: ipr command struct | |
4538 | * | |
4539 | * This function sends a Query IOA Configuration command | |
4540 | * to the adapter to retrieve the IOA configuration table. | |
4541 | * | |
4542 | * Return value: | |
4543 | * IPR_RC_JOB_RETURN | |
4544 | **/ | |
4545 | static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) | |
4546 | { | |
4547 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4548 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; | |
4549 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; | |
4550 | struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; | |
4551 | ||
4552 | ENTER; | |
4553 | dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", | |
4554 | ucode_vpd->major_release, ucode_vpd->card_type, | |
4555 | ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); | |
4556 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; | |
4557 | ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); | |
4558 | ||
4559 | ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; | |
4560 | ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff; | |
4561 | ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff; | |
4562 | ||
4563 | ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); | |
4564 | ioarcb->read_data_transfer_length = | |
4565 | cpu_to_be32(sizeof(struct ipr_config_table)); | |
4566 | ||
4567 | ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma); | |
4568 | ioadl->flags_and_data_len = | |
4569 | cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table)); | |
4570 | ||
4571 | ipr_cmd->job_step = ipr_init_res_table; | |
4572 | ||
4573 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); | |
4574 | ||
4575 | LEAVE; | |
4576 | return IPR_RC_JOB_RETURN; | |
4577 | } | |
4578 | ||
4579 | /** | |
4580 | * ipr_ioafp_inquiry - Send an Inquiry to the adapter. | |
4581 | * @ipr_cmd: ipr command struct | |
4582 | * | |
4583 | * This utility function sends an inquiry to the adapter. | |
4584 | * | |
4585 | * Return value: | |
4586 | * none | |
4587 | **/ | |
4588 | static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, | |
4589 | u32 dma_addr, u8 xfer_len) | |
4590 | { | |
4591 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; | |
4592 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; | |
4593 | ||
4594 | ENTER; | |
4595 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; | |
4596 | ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); | |
4597 | ||
4598 | ioarcb->cmd_pkt.cdb[0] = INQUIRY; | |
4599 | ioarcb->cmd_pkt.cdb[1] = flags; | |
4600 | ioarcb->cmd_pkt.cdb[2] = page; | |
4601 | ioarcb->cmd_pkt.cdb[4] = xfer_len; | |
4602 | ||
4603 | ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); | |
4604 | ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); | |
4605 | ||
4606 | ioadl->address = cpu_to_be32(dma_addr); | |
4607 | ioadl->flags_and_data_len = | |
4608 | cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); | |
4609 | ||
4610 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); | |
4611 | LEAVE; | |
4612 | } | |
4613 | ||
4614 | /** | |
4615 | * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. | |
4616 | * @ipr_cmd: ipr command struct | |
4617 | * | |
4618 | * This function sends a Page 3 inquiry to the adapter | |
4619 | * to retrieve software VPD information. | |
4620 | * | |
4621 | * Return value: | |
4622 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN | |
4623 | **/ | |
4624 | static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) | |
4625 | { | |
4626 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4627 | char type[5]; | |
4628 | ||
4629 | ENTER; | |
4630 | ||
4631 | /* Grab the type out of the VPD and store it away */ | |
4632 | memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); | |
4633 | type[4] = '\0'; | |
4634 | ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); | |
4635 | ||
4636 | ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; | |
4637 | ||
4638 | ipr_ioafp_inquiry(ipr_cmd, 1, 3, | |
4639 | ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), | |
4640 | sizeof(struct ipr_inquiry_page3)); | |
4641 | ||
4642 | LEAVE; | |
4643 | return IPR_RC_JOB_RETURN; | |
4644 | } | |
4645 | ||
4646 | /** | |
4647 | * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. | |
4648 | * @ipr_cmd: ipr command struct | |
4649 | * | |
4650 | * This function sends a standard inquiry to the adapter. | |
4651 | * | |
4652 | * Return value: | |
4653 | * IPR_RC_JOB_RETURN | |
4654 | **/ | |
4655 | static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) | |
4656 | { | |
4657 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4658 | ||
4659 | ENTER; | |
4660 | ipr_cmd->job_step = ipr_ioafp_page3_inquiry; | |
4661 | ||
4662 | ipr_ioafp_inquiry(ipr_cmd, 0, 0, | |
4663 | ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), | |
4664 | sizeof(struct ipr_ioa_vpd)); | |
4665 | ||
4666 | LEAVE; | |
4667 | return IPR_RC_JOB_RETURN; | |
4668 | } | |
4669 | ||
4670 | /** | |
4671 | * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ. | |
4672 | * @ipr_cmd: ipr command struct | |
4673 | * | |
4674 | * This function send an Identify Host Request Response Queue | |
4675 | * command to establish the HRRQ with the adapter. | |
4676 | * | |
4677 | * Return value: | |
4678 | * IPR_RC_JOB_RETURN | |
4679 | **/ | |
4680 | static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd) | |
4681 | { | |
4682 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4683 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; | |
4684 | ||
4685 | ENTER; | |
4686 | dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); | |
4687 | ||
4688 | ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; | |
4689 | ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); | |
4690 | ||
4691 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; | |
4692 | ioarcb->cmd_pkt.cdb[2] = | |
4693 | ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff; | |
4694 | ioarcb->cmd_pkt.cdb[3] = | |
4695 | ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff; | |
4696 | ioarcb->cmd_pkt.cdb[4] = | |
4697 | ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff; | |
4698 | ioarcb->cmd_pkt.cdb[5] = | |
4699 | ((u32) ioa_cfg->host_rrq_dma) & 0xff; | |
4700 | ioarcb->cmd_pkt.cdb[7] = | |
4701 | ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; | |
4702 | ioarcb->cmd_pkt.cdb[8] = | |
4703 | (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; | |
4704 | ||
4705 | ipr_cmd->job_step = ipr_ioafp_std_inquiry; | |
4706 | ||
4707 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); | |
4708 | ||
4709 | LEAVE; | |
4710 | return IPR_RC_JOB_RETURN; | |
4711 | } | |
4712 | ||
4713 | /** | |
4714 | * ipr_reset_timer_done - Adapter reset timer function | |
4715 | * @ipr_cmd: ipr command struct | |
4716 | * | |
4717 | * Description: This function is used in adapter reset processing | |
4718 | * for timing events. If the reset_cmd pointer in the IOA | |
4719 | * config struct is not this adapter's we are doing nested | |
4720 | * resets and fail_all_ops will take care of freeing the | |
4721 | * command block. | |
4722 | * | |
4723 | * Return value: | |
4724 | * none | |
4725 | **/ | |
4726 | static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) | |
4727 | { | |
4728 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4729 | unsigned long lock_flags = 0; | |
4730 | ||
4731 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
4732 | ||
4733 | if (ioa_cfg->reset_cmd == ipr_cmd) { | |
4734 | list_del(&ipr_cmd->queue); | |
4735 | ipr_cmd->done(ipr_cmd); | |
4736 | } | |
4737 | ||
4738 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
4739 | } | |
4740 | ||
4741 | /** | |
4742 | * ipr_reset_start_timer - Start a timer for adapter reset job | |
4743 | * @ipr_cmd: ipr command struct | |
4744 | * @timeout: timeout value | |
4745 | * | |
4746 | * Description: This function is used in adapter reset processing | |
4747 | * for timing events. If the reset_cmd pointer in the IOA | |
4748 | * config struct is not this adapter's we are doing nested | |
4749 | * resets and fail_all_ops will take care of freeing the | |
4750 | * command block. | |
4751 | * | |
4752 | * Return value: | |
4753 | * none | |
4754 | **/ | |
4755 | static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, | |
4756 | unsigned long timeout) | |
4757 | { | |
4758 | list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); | |
4759 | ipr_cmd->done = ipr_reset_ioa_job; | |
4760 | ||
4761 | ipr_cmd->timer.data = (unsigned long) ipr_cmd; | |
4762 | ipr_cmd->timer.expires = jiffies + timeout; | |
4763 | ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; | |
4764 | add_timer(&ipr_cmd->timer); | |
4765 | } | |
4766 | ||
4767 | /** | |
4768 | * ipr_init_ioa_mem - Initialize ioa_cfg control block | |
4769 | * @ioa_cfg: ioa cfg struct | |
4770 | * | |
4771 | * Return value: | |
4772 | * nothing | |
4773 | **/ | |
4774 | static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) | |
4775 | { | |
4776 | memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); | |
4777 | ||
4778 | /* Initialize Host RRQ pointers */ | |
4779 | ioa_cfg->hrrq_start = ioa_cfg->host_rrq; | |
4780 | ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; | |
4781 | ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; | |
4782 | ioa_cfg->toggle_bit = 1; | |
4783 | ||
4784 | /* Zero out config table */ | |
4785 | memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table)); | |
4786 | } | |
4787 | ||
4788 | /** | |
4789 | * ipr_reset_enable_ioa - Enable the IOA following a reset. | |
4790 | * @ipr_cmd: ipr command struct | |
4791 | * | |
4792 | * This function reinitializes some control blocks and | |
4793 | * enables destructive diagnostics on the adapter. | |
4794 | * | |
4795 | * Return value: | |
4796 | * IPR_RC_JOB_RETURN | |
4797 | **/ | |
4798 | static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) | |
4799 | { | |
4800 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4801 | volatile u32 int_reg; | |
4802 | ||
4803 | ENTER; | |
4804 | ipr_cmd->job_step = ipr_ioafp_indentify_hrrq; | |
4805 | ipr_init_ioa_mem(ioa_cfg); | |
4806 | ||
4807 | ioa_cfg->allow_interrupts = 1; | |
4808 | int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); | |
4809 | ||
4810 | if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { | |
4811 | writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), | |
4812 | ioa_cfg->regs.clr_interrupt_mask_reg); | |
4813 | int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); | |
4814 | return IPR_RC_JOB_CONTINUE; | |
4815 | } | |
4816 | ||
4817 | /* Enable destructive diagnostics on IOA */ | |
4818 | writel(IPR_DOORBELL, ioa_cfg->regs.set_uproc_interrupt_reg); | |
4819 | ||
4820 | writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg); | |
4821 | int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); | |
4822 | ||
4823 | dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); | |
4824 | ||
4825 | ipr_cmd->timer.data = (unsigned long) ipr_cmd; | |
4826 | ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ); | |
4827 | ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; | |
4828 | ipr_cmd->done = ipr_reset_ioa_job; | |
4829 | add_timer(&ipr_cmd->timer); | |
4830 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); | |
4831 | ||
4832 | LEAVE; | |
4833 | return IPR_RC_JOB_RETURN; | |
4834 | } | |
4835 | ||
4836 | /** | |
4837 | * ipr_reset_wait_for_dump - Wait for a dump to timeout. | |
4838 | * @ipr_cmd: ipr command struct | |
4839 | * | |
4840 | * This function is invoked when an adapter dump has run out | |
4841 | * of processing time. | |
4842 | * | |
4843 | * Return value: | |
4844 | * IPR_RC_JOB_CONTINUE | |
4845 | **/ | |
4846 | static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) | |
4847 | { | |
4848 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4849 | ||
4850 | if (ioa_cfg->sdt_state == GET_DUMP) | |
4851 | ioa_cfg->sdt_state = ABORT_DUMP; | |
4852 | ||
4853 | ipr_cmd->job_step = ipr_reset_alert; | |
4854 | ||
4855 | return IPR_RC_JOB_CONTINUE; | |
4856 | } | |
4857 | ||
4858 | /** | |
4859 | * ipr_unit_check_no_data - Log a unit check/no data error log | |
4860 | * @ioa_cfg: ioa config struct | |
4861 | * | |
4862 | * Logs an error indicating the adapter unit checked, but for some | |
4863 | * reason, we were unable to fetch the unit check buffer. | |
4864 | * | |
4865 | * Return value: | |
4866 | * nothing | |
4867 | **/ | |
4868 | static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) | |
4869 | { | |
4870 | ioa_cfg->errors_logged++; | |
4871 | dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); | |
4872 | } | |
4873 | ||
4874 | /** | |
4875 | * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA | |
4876 | * @ioa_cfg: ioa config struct | |
4877 | * | |
4878 | * Fetches the unit check buffer from the adapter by clocking the data | |
4879 | * through the mailbox register. | |
4880 | * | |
4881 | * Return value: | |
4882 | * nothing | |
4883 | **/ | |
4884 | static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) | |
4885 | { | |
4886 | unsigned long mailbox; | |
4887 | struct ipr_hostrcb *hostrcb; | |
4888 | struct ipr_uc_sdt sdt; | |
4889 | int rc, length; | |
4890 | ||
4891 | mailbox = readl(ioa_cfg->ioa_mailbox); | |
4892 | ||
4893 | if (!ipr_sdt_is_fmt2(mailbox)) { | |
4894 | ipr_unit_check_no_data(ioa_cfg); | |
4895 | return; | |
4896 | } | |
4897 | ||
4898 | memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); | |
4899 | rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, | |
4900 | (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); | |
4901 | ||
4902 | if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) || | |
4903 | !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) { | |
4904 | ipr_unit_check_no_data(ioa_cfg); | |
4905 | return; | |
4906 | } | |
4907 | ||
4908 | /* Find length of the first sdt entry (UC buffer) */ | |
4909 | length = (be32_to_cpu(sdt.entry[0].end_offset) - | |
4910 | be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK; | |
4911 | ||
4912 | hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, | |
4913 | struct ipr_hostrcb, queue); | |
4914 | list_del(&hostrcb->queue); | |
4915 | memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); | |
4916 | ||
4917 | rc = ipr_get_ldump_data_section(ioa_cfg, | |
4918 | be32_to_cpu(sdt.entry[0].bar_str_offset), | |
4919 | (__be32 *)&hostrcb->hcam, | |
4920 | min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); | |
4921 | ||
4922 | if (!rc) | |
4923 | ipr_handle_log_data(ioa_cfg, hostrcb); | |
4924 | else | |
4925 | ipr_unit_check_no_data(ioa_cfg); | |
4926 | ||
4927 | list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); | |
4928 | } | |
4929 | ||
4930 | /** | |
4931 | * ipr_reset_restore_cfg_space - Restore PCI config space. | |
4932 | * @ipr_cmd: ipr command struct | |
4933 | * | |
4934 | * Description: This function restores the saved PCI config space of | |
4935 | * the adapter, fails all outstanding ops back to the callers, and | |
4936 | * fetches the dump/unit check if applicable to this reset. | |
4937 | * | |
4938 | * Return value: | |
4939 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN | |
4940 | **/ | |
4941 | static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) | |
4942 | { | |
4943 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4944 | int rc; | |
4945 | ||
4946 | ENTER; | |
4947 | rc = pci_restore_state(ioa_cfg->pdev); | |
4948 | ||
4949 | if (rc != PCIBIOS_SUCCESSFUL) { | |
4950 | ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); | |
4951 | return IPR_RC_JOB_CONTINUE; | |
4952 | } | |
4953 | ||
4954 | if (ipr_set_pcix_cmd_reg(ioa_cfg)) { | |
4955 | ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); | |
4956 | return IPR_RC_JOB_CONTINUE; | |
4957 | } | |
4958 | ||
4959 | ipr_fail_all_ops(ioa_cfg); | |
4960 | ||
4961 | if (ioa_cfg->ioa_unit_checked) { | |
4962 | ioa_cfg->ioa_unit_checked = 0; | |
4963 | ipr_get_unit_check_buffer(ioa_cfg); | |
4964 | ipr_cmd->job_step = ipr_reset_alert; | |
4965 | ipr_reset_start_timer(ipr_cmd, 0); | |
4966 | return IPR_RC_JOB_RETURN; | |
4967 | } | |
4968 | ||
4969 | if (ioa_cfg->in_ioa_bringdown) { | |
4970 | ipr_cmd->job_step = ipr_ioa_bringdown_done; | |
4971 | } else { | |
4972 | ipr_cmd->job_step = ipr_reset_enable_ioa; | |
4973 | ||
4974 | if (GET_DUMP == ioa_cfg->sdt_state) { | |
4975 | ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); | |
4976 | ipr_cmd->job_step = ipr_reset_wait_for_dump; | |
4977 | schedule_work(&ioa_cfg->work_q); | |
4978 | return IPR_RC_JOB_RETURN; | |
4979 | } | |
4980 | } | |
4981 | ||
4982 | ENTER; | |
4983 | return IPR_RC_JOB_CONTINUE; | |
4984 | } | |
4985 | ||
4986 | /** | |
4987 | * ipr_reset_start_bist - Run BIST on the adapter. | |
4988 | * @ipr_cmd: ipr command struct | |
4989 | * | |
4990 | * Description: This function runs BIST on the adapter, then delays 2 seconds. | |
4991 | * | |
4992 | * Return value: | |
4993 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN | |
4994 | **/ | |
4995 | static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) | |
4996 | { | |
4997 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4998 | int rc; | |
4999 | ||
5000 | ENTER; | |
5001 | rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); | |
5002 | ||
5003 | if (rc != PCIBIOS_SUCCESSFUL) { | |
5004 | ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); | |
5005 | rc = IPR_RC_JOB_CONTINUE; | |
5006 | } else { | |
5007 | ipr_cmd->job_step = ipr_reset_restore_cfg_space; | |
5008 | ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); | |
5009 | rc = IPR_RC_JOB_RETURN; | |
5010 | } | |
5011 | ||
5012 | LEAVE; | |
5013 | return rc; | |
5014 | } | |
5015 | ||
5016 | /** | |
5017 | * ipr_reset_allowed - Query whether or not IOA can be reset | |
5018 | * @ioa_cfg: ioa config struct | |
5019 | * | |
5020 | * Return value: | |
5021 | * 0 if reset not allowed / non-zero if reset is allowed | |
5022 | **/ | |
5023 | static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) | |
5024 | { | |
5025 | volatile u32 temp_reg; | |
5026 | ||
5027 | temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); | |
5028 | return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); | |
5029 | } | |
5030 | ||
5031 | /** | |
5032 | * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. | |
5033 | * @ipr_cmd: ipr command struct | |
5034 | * | |
5035 | * Description: This function waits for adapter permission to run BIST, | |
5036 | * then runs BIST. If the adapter does not give permission after a | |
5037 | * reasonable time, we will reset the adapter anyway. The impact of | |
5038 | * resetting the adapter without warning the adapter is the risk of | |
5039 | * losing the persistent error log on the adapter. If the adapter is | |
5040 | * reset while it is writing to the flash on the adapter, the flash | |
5041 | * segment will have bad ECC and be zeroed. | |
5042 | * | |
5043 | * Return value: | |
5044 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN | |
5045 | **/ | |
5046 | static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) | |
5047 | { | |
5048 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
5049 | int rc = IPR_RC_JOB_RETURN; | |
5050 | ||
5051 | if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { | |
5052 | ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; | |
5053 | ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); | |
5054 | } else { | |
5055 | ipr_cmd->job_step = ipr_reset_start_bist; | |
5056 | rc = IPR_RC_JOB_CONTINUE; | |
5057 | } | |
5058 | ||
5059 | return rc; | |
5060 | } | |
5061 | ||
5062 | /** | |
5063 | * ipr_reset_alert_part2 - Alert the adapter of a pending reset | |
5064 | * @ipr_cmd: ipr command struct | |
5065 | * | |
5066 | * Description: This function alerts the adapter that it will be reset. | |
5067 | * If memory space is not currently enabled, proceed directly | |
5068 | * to running BIST on the adapter. The timer must always be started | |
5069 | * so we guarantee we do not run BIST from ipr_isr. | |
5070 | * | |
5071 | * Return value: | |
5072 | * IPR_RC_JOB_RETURN | |
5073 | **/ | |
5074 | static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) | |
5075 | { | |
5076 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
5077 | u16 cmd_reg; | |
5078 | int rc; | |
5079 | ||
5080 | ENTER; | |
5081 | rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); | |
5082 | ||
5083 | if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { | |
5084 | ipr_mask_and_clear_interrupts(ioa_cfg, ~0); | |
5085 | writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg); | |
5086 | ipr_cmd->job_step = ipr_reset_wait_to_start_bist; | |
5087 | } else { | |
5088 | ipr_cmd->job_step = ipr_reset_start_bist; | |
5089 | } | |
5090 | ||
5091 | ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; | |
5092 | ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); | |
5093 | ||
5094 | LEAVE; | |
5095 | return IPR_RC_JOB_RETURN; | |
5096 | } | |
5097 | ||
5098 | /** | |
5099 | * ipr_reset_ucode_download_done - Microcode download completion | |
5100 | * @ipr_cmd: ipr command struct | |
5101 | * | |
5102 | * Description: This function unmaps the microcode download buffer. | |
5103 | * | |
5104 | * Return value: | |
5105 | * IPR_RC_JOB_CONTINUE | |
5106 | **/ | |
5107 | static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) | |
5108 | { | |
5109 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
5110 | struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; | |
5111 | ||
5112 | pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, | |
5113 | sglist->num_sg, DMA_TO_DEVICE); | |
5114 | ||
5115 | ipr_cmd->job_step = ipr_reset_alert; | |
5116 | return IPR_RC_JOB_CONTINUE; | |
5117 | } | |
5118 | ||
5119 | /** | |
5120 | * ipr_reset_ucode_download - Download microcode to the adapter | |
5121 | * @ipr_cmd: ipr command struct | |
5122 | * | |
5123 | * Description: This function checks to see if it there is microcode | |
5124 | * to download to the adapter. If there is, a download is performed. | |
5125 | * | |
5126 | * Return value: | |
5127 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN | |
5128 | **/ | |
5129 | static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) | |
5130 | { | |
5131 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
5132 | struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; | |
5133 | ||
5134 | ENTER; | |
5135 | ipr_cmd->job_step = ipr_reset_alert; | |
5136 | ||
5137 | if (!sglist) | |
5138 | return IPR_RC_JOB_CONTINUE; | |
5139 | ||
5140 | ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); | |
5141 | ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; | |
5142 | ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; | |
5143 | ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; | |
5144 | ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; | |
5145 | ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; | |
5146 | ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; | |
5147 | ||
5148 | if (ipr_map_ucode_buffer(ipr_cmd, sglist, sglist->buffer_len)) { | |
5149 | dev_err(&ioa_cfg->pdev->dev, | |
5150 | "Failed to map microcode download buffer\n"); | |
5151 | return IPR_RC_JOB_CONTINUE; | |
5152 | } | |
5153 | ||
5154 | ipr_cmd->job_step = ipr_reset_ucode_download_done; | |
5155 | ||
5156 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, | |
5157 | IPR_WRITE_BUFFER_TIMEOUT); | |
5158 | ||
5159 | LEAVE; | |
5160 | return IPR_RC_JOB_RETURN; | |
5161 | } | |
5162 | ||
5163 | /** | |
5164 | * ipr_reset_shutdown_ioa - Shutdown the adapter | |
5165 | * @ipr_cmd: ipr command struct | |
5166 | * | |
5167 | * Description: This function issues an adapter shutdown of the | |
5168 | * specified type to the specified adapter as part of the | |
5169 | * adapter reset job. | |
5170 | * | |
5171 | * Return value: | |
5172 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN | |
5173 | **/ | |
5174 | static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) | |
5175 | { | |
5176 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
5177 | enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; | |
5178 | unsigned long timeout; | |
5179 | int rc = IPR_RC_JOB_CONTINUE; | |
5180 | ||
5181 | ENTER; | |
5182 | if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { | |
5183 | ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); | |
5184 | ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; | |
5185 | ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; | |
5186 | ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; | |
5187 | ||
5188 | if (shutdown_type == IPR_SHUTDOWN_ABBREV) | |
5189 | timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; | |
5190 | else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) | |
5191 | timeout = IPR_INTERNAL_TIMEOUT; | |
5192 | else | |
5193 | timeout = IPR_SHUTDOWN_TIMEOUT; | |
5194 | ||
5195 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); | |
5196 | ||
5197 | rc = IPR_RC_JOB_RETURN; | |
5198 | ipr_cmd->job_step = ipr_reset_ucode_download; | |
5199 | } else | |
5200 | ipr_cmd->job_step = ipr_reset_alert; | |
5201 | ||
5202 | LEAVE; | |
5203 | return rc; | |
5204 | } | |
5205 | ||
5206 | /** | |
5207 | * ipr_reset_ioa_job - Adapter reset job | |
5208 | * @ipr_cmd: ipr command struct | |
5209 | * | |
5210 | * Description: This function is the job router for the adapter reset job. | |
5211 | * | |
5212 | * Return value: | |
5213 | * none | |
5214 | **/ | |
5215 | static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) | |
5216 | { | |
5217 | u32 rc, ioasc; | |
5218 | unsigned long scratch = ipr_cmd->u.scratch; | |
5219 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
5220 | ||
5221 | do { | |
5222 | ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
5223 | ||
5224 | if (ioa_cfg->reset_cmd != ipr_cmd) { | |
5225 | /* | |
5226 | * We are doing nested adapter resets and this is | |
5227 | * not the current reset job. | |
5228 | */ | |
5229 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
5230 | return; | |
5231 | } | |
5232 | ||
5233 | if (IPR_IOASC_SENSE_KEY(ioasc)) { | |
5234 | dev_err(&ioa_cfg->pdev->dev, | |
5235 | "0x%02X failed with IOASC: 0x%08X\n", | |
5236 | ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); | |
5237 | ||
5238 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); | |
5239 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
5240 | return; | |
5241 | } | |
5242 | ||
5243 | ipr_reinit_ipr_cmnd(ipr_cmd); | |
5244 | ipr_cmd->u.scratch = scratch; | |
5245 | rc = ipr_cmd->job_step(ipr_cmd); | |
5246 | } while(rc == IPR_RC_JOB_CONTINUE); | |
5247 | } | |
5248 | ||
5249 | /** | |
5250 | * _ipr_initiate_ioa_reset - Initiate an adapter reset | |
5251 | * @ioa_cfg: ioa config struct | |
5252 | * @job_step: first job step of reset job | |
5253 | * @shutdown_type: shutdown type | |
5254 | * | |
5255 | * Description: This function will initiate the reset of the given adapter | |
5256 | * starting at the selected job step. | |
5257 | * If the caller needs to wait on the completion of the reset, | |
5258 | * the caller must sleep on the reset_wait_q. | |
5259 | * | |
5260 | * Return value: | |
5261 | * none | |
5262 | **/ | |
5263 | static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, | |
5264 | int (*job_step) (struct ipr_cmnd *), | |
5265 | enum ipr_shutdown_type shutdown_type) | |
5266 | { | |
5267 | struct ipr_cmnd *ipr_cmd; | |
5268 | ||
5269 | ioa_cfg->in_reset_reload = 1; | |
5270 | ioa_cfg->allow_cmds = 0; | |
5271 | scsi_block_requests(ioa_cfg->host); | |
5272 | ||
5273 | ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); | |
5274 | ioa_cfg->reset_cmd = ipr_cmd; | |
5275 | ipr_cmd->job_step = job_step; | |
5276 | ipr_cmd->u.shutdown_type = shutdown_type; | |
5277 | ||
5278 | ipr_reset_ioa_job(ipr_cmd); | |
5279 | } | |
5280 | ||
5281 | /** | |
5282 | * ipr_initiate_ioa_reset - Initiate an adapter reset | |
5283 | * @ioa_cfg: ioa config struct | |
5284 | * @shutdown_type: shutdown type | |
5285 | * | |
5286 | * Description: This function will initiate the reset of the given adapter. | |
5287 | * If the caller needs to wait on the completion of the reset, | |
5288 | * the caller must sleep on the reset_wait_q. | |
5289 | * | |
5290 | * Return value: | |
5291 | * none | |
5292 | **/ | |
5293 | static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, | |
5294 | enum ipr_shutdown_type shutdown_type) | |
5295 | { | |
5296 | if (ioa_cfg->ioa_is_dead) | |
5297 | return; | |
5298 | ||
5299 | if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) | |
5300 | ioa_cfg->sdt_state = ABORT_DUMP; | |
5301 | ||
5302 | if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { | |
5303 | dev_err(&ioa_cfg->pdev->dev, | |
5304 | "IOA taken offline - error recovery failed\n"); | |
5305 | ||
5306 | ioa_cfg->reset_retries = 0; | |
5307 | ioa_cfg->ioa_is_dead = 1; | |
5308 | ||
5309 | if (ioa_cfg->in_ioa_bringdown) { | |
5310 | ioa_cfg->reset_cmd = NULL; | |
5311 | ioa_cfg->in_reset_reload = 0; | |
5312 | ipr_fail_all_ops(ioa_cfg); | |
5313 | wake_up_all(&ioa_cfg->reset_wait_q); | |
5314 | ||
5315 | spin_unlock_irq(ioa_cfg->host->host_lock); | |
5316 | scsi_unblock_requests(ioa_cfg->host); | |
5317 | spin_lock_irq(ioa_cfg->host->host_lock); | |
5318 | return; | |
5319 | } else { | |
5320 | ioa_cfg->in_ioa_bringdown = 1; | |
5321 | shutdown_type = IPR_SHUTDOWN_NONE; | |
5322 | } | |
5323 | } | |
5324 | ||
5325 | _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, | |
5326 | shutdown_type); | |
5327 | } | |
5328 | ||
5329 | /** | |
5330 | * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) | |
5331 | * @ioa_cfg: ioa cfg struct | |
5332 | * | |
5333 | * Description: This is the second phase of adapter intialization | |
5334 | * This function takes care of initilizing the adapter to the point | |
5335 | * where it can accept new commands. | |
5336 | ||
5337 | * Return value: | |
5338 | * 0 on sucess / -EIO on failure | |
5339 | **/ | |
5340 | static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) | |
5341 | { | |
5342 | int rc = 0; | |
5343 | unsigned long host_lock_flags = 0; | |
5344 | ||
5345 | ENTER; | |
5346 | spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); | |
5347 | dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); | |
5348 | _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, IPR_SHUTDOWN_NONE); | |
5349 | ||
5350 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); | |
5351 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); | |
5352 | spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); | |
5353 | ||
5354 | if (ioa_cfg->ioa_is_dead) { | |
5355 | rc = -EIO; | |
5356 | } else if (ipr_invalid_adapter(ioa_cfg)) { | |
5357 | if (!ipr_testmode) | |
5358 | rc = -EIO; | |
5359 | ||
5360 | dev_err(&ioa_cfg->pdev->dev, | |
5361 | "Adapter not supported in this hardware configuration.\n"); | |
5362 | } | |
5363 | ||
5364 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); | |
5365 | ||
5366 | LEAVE; | |
5367 | return rc; | |
5368 | } | |
5369 | ||
5370 | /** | |
5371 | * ipr_free_cmd_blks - Frees command blocks allocated for an adapter | |
5372 | * @ioa_cfg: ioa config struct | |
5373 | * | |
5374 | * Return value: | |
5375 | * none | |
5376 | **/ | |
5377 | static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) | |
5378 | { | |
5379 | int i; | |
5380 | ||
5381 | for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { | |
5382 | if (ioa_cfg->ipr_cmnd_list[i]) | |
5383 | pci_pool_free(ioa_cfg->ipr_cmd_pool, | |
5384 | ioa_cfg->ipr_cmnd_list[i], | |
5385 | ioa_cfg->ipr_cmnd_list_dma[i]); | |
5386 | ||
5387 | ioa_cfg->ipr_cmnd_list[i] = NULL; | |
5388 | } | |
5389 | ||
5390 | if (ioa_cfg->ipr_cmd_pool) | |
5391 | pci_pool_destroy (ioa_cfg->ipr_cmd_pool); | |
5392 | ||
5393 | ioa_cfg->ipr_cmd_pool = NULL; | |
5394 | } | |
5395 | ||
5396 | /** | |
5397 | * ipr_free_mem - Frees memory allocated for an adapter | |
5398 | * @ioa_cfg: ioa cfg struct | |
5399 | * | |
5400 | * Return value: | |
5401 | * nothing | |
5402 | **/ | |
5403 | static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) | |
5404 | { | |
5405 | int i; | |
5406 | ||
5407 | kfree(ioa_cfg->res_entries); | |
5408 | pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), | |
5409 | ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); | |
5410 | ipr_free_cmd_blks(ioa_cfg); | |
5411 | pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, | |
5412 | ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); | |
5413 | pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table), | |
5414 | ioa_cfg->cfg_table, | |
5415 | ioa_cfg->cfg_table_dma); | |
5416 | ||
5417 | for (i = 0; i < IPR_NUM_HCAMS; i++) { | |
5418 | pci_free_consistent(ioa_cfg->pdev, | |
5419 | sizeof(struct ipr_hostrcb), | |
5420 | ioa_cfg->hostrcb[i], | |
5421 | ioa_cfg->hostrcb_dma[i]); | |
5422 | } | |
5423 | ||
5424 | ipr_free_dump(ioa_cfg); | |
5425 | kfree(ioa_cfg->saved_mode_pages); | |
5426 | kfree(ioa_cfg->trace); | |
5427 | } | |
5428 | ||
5429 | /** | |
5430 | * ipr_free_all_resources - Free all allocated resources for an adapter. | |
5431 | * @ipr_cmd: ipr command struct | |
5432 | * | |
5433 | * This function frees all allocated resources for the | |
5434 | * specified adapter. | |
5435 | * | |
5436 | * Return value: | |
5437 | * none | |
5438 | **/ | |
5439 | static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) | |
5440 | { | |
5441 | struct pci_dev *pdev = ioa_cfg->pdev; | |
5442 | ||
5443 | ENTER; | |
5444 | free_irq(pdev->irq, ioa_cfg); | |
5445 | iounmap(ioa_cfg->hdw_dma_regs); | |
5446 | pci_release_regions(pdev); | |
5447 | ipr_free_mem(ioa_cfg); | |
5448 | scsi_host_put(ioa_cfg->host); | |
5449 | pci_disable_device(pdev); | |
5450 | LEAVE; | |
5451 | } | |
5452 | ||
5453 | /** | |
5454 | * ipr_alloc_cmd_blks - Allocate command blocks for an adapter | |
5455 | * @ioa_cfg: ioa config struct | |
5456 | * | |
5457 | * Return value: | |
5458 | * 0 on success / -ENOMEM on allocation failure | |
5459 | **/ | |
5460 | static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) | |
5461 | { | |
5462 | struct ipr_cmnd *ipr_cmd; | |
5463 | struct ipr_ioarcb *ioarcb; | |
5464 | dma_addr_t dma_addr; | |
5465 | int i; | |
5466 | ||
5467 | ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, | |
5468 | sizeof(struct ipr_cmnd), 8, 0); | |
5469 | ||
5470 | if (!ioa_cfg->ipr_cmd_pool) | |
5471 | return -ENOMEM; | |
5472 | ||
5473 | for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { | |
5474 | ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr); | |
5475 | ||
5476 | if (!ipr_cmd) { | |
5477 | ipr_free_cmd_blks(ioa_cfg); | |
5478 | return -ENOMEM; | |
5479 | } | |
5480 | ||
5481 | memset(ipr_cmd, 0, sizeof(*ipr_cmd)); | |
5482 | ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; | |
5483 | ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; | |
5484 | ||
5485 | ioarcb = &ipr_cmd->ioarcb; | |
5486 | ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr); | |
5487 | ioarcb->host_response_handle = cpu_to_be32(i << 2); | |
5488 | ioarcb->write_ioadl_addr = | |
5489 | cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); | |
5490 | ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; | |
5491 | ioarcb->ioasa_host_pci_addr = | |
5492 | cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa)); | |
5493 | ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); | |
5494 | ipr_cmd->cmd_index = i; | |
5495 | ipr_cmd->ioa_cfg = ioa_cfg; | |
5496 | ipr_cmd->sense_buffer_dma = dma_addr + | |
5497 | offsetof(struct ipr_cmnd, sense_buffer); | |
5498 | ||
5499 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
5500 | } | |
5501 | ||
5502 | return 0; | |
5503 | } | |
5504 | ||
5505 | /** | |
5506 | * ipr_alloc_mem - Allocate memory for an adapter | |
5507 | * @ioa_cfg: ioa config struct | |
5508 | * | |
5509 | * Return value: | |
5510 | * 0 on success / non-zero for error | |
5511 | **/ | |
5512 | static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) | |
5513 | { | |
5514 | struct pci_dev *pdev = ioa_cfg->pdev; | |
5515 | int i, rc = -ENOMEM; | |
5516 | ||
5517 | ENTER; | |
5518 | ioa_cfg->res_entries = kmalloc(sizeof(struct ipr_resource_entry) * | |
5519 | IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL); | |
5520 | ||
5521 | if (!ioa_cfg->res_entries) | |
5522 | goto out; | |
5523 | ||
5524 | memset(ioa_cfg->res_entries, 0, | |
5525 | sizeof(struct ipr_resource_entry) * IPR_MAX_PHYSICAL_DEVS); | |
5526 | ||
5527 | for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++) | |
5528 | list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); | |
5529 | ||
5530 | ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, | |
5531 | sizeof(struct ipr_misc_cbs), | |
5532 | &ioa_cfg->vpd_cbs_dma); | |
5533 | ||
5534 | if (!ioa_cfg->vpd_cbs) | |
5535 | goto out_free_res_entries; | |
5536 | ||
5537 | if (ipr_alloc_cmd_blks(ioa_cfg)) | |
5538 | goto out_free_vpd_cbs; | |
5539 | ||
5540 | ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, | |
5541 | sizeof(u32) * IPR_NUM_CMD_BLKS, | |
5542 | &ioa_cfg->host_rrq_dma); | |
5543 | ||
5544 | if (!ioa_cfg->host_rrq) | |
5545 | goto out_ipr_free_cmd_blocks; | |
5546 | ||
5547 | ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev, | |
5548 | sizeof(struct ipr_config_table), | |
5549 | &ioa_cfg->cfg_table_dma); | |
5550 | ||
5551 | if (!ioa_cfg->cfg_table) | |
5552 | goto out_free_host_rrq; | |
5553 | ||
5554 | for (i = 0; i < IPR_NUM_HCAMS; i++) { | |
5555 | ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, | |
5556 | sizeof(struct ipr_hostrcb), | |
5557 | &ioa_cfg->hostrcb_dma[i]); | |
5558 | ||
5559 | if (!ioa_cfg->hostrcb[i]) | |
5560 | goto out_free_hostrcb_dma; | |
5561 | ||
5562 | ioa_cfg->hostrcb[i]->hostrcb_dma = | |
5563 | ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); | |
5564 | list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); | |
5565 | } | |
5566 | ||
5567 | ioa_cfg->trace = kmalloc(sizeof(struct ipr_trace_entry) * | |
5568 | IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); | |
5569 | ||
5570 | if (!ioa_cfg->trace) | |
5571 | goto out_free_hostrcb_dma; | |
5572 | ||
5573 | memset(ioa_cfg->trace, 0, | |
5574 | sizeof(struct ipr_trace_entry) * IPR_NUM_TRACE_ENTRIES); | |
5575 | ||
5576 | rc = 0; | |
5577 | out: | |
5578 | LEAVE; | |
5579 | return rc; | |
5580 | ||
5581 | out_free_hostrcb_dma: | |
5582 | while (i-- > 0) { | |
5583 | pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), | |
5584 | ioa_cfg->hostrcb[i], | |
5585 | ioa_cfg->hostrcb_dma[i]); | |
5586 | } | |
5587 | pci_free_consistent(pdev, sizeof(struct ipr_config_table), | |
5588 | ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma); | |
5589 | out_free_host_rrq: | |
5590 | pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, | |
5591 | ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); | |
5592 | out_ipr_free_cmd_blocks: | |
5593 | ipr_free_cmd_blks(ioa_cfg); | |
5594 | out_free_vpd_cbs: | |
5595 | pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), | |
5596 | ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); | |
5597 | out_free_res_entries: | |
5598 | kfree(ioa_cfg->res_entries); | |
5599 | goto out; | |
5600 | } | |
5601 | ||
5602 | /** | |
5603 | * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values | |
5604 | * @ioa_cfg: ioa config struct | |
5605 | * | |
5606 | * Return value: | |
5607 | * none | |
5608 | **/ | |
5609 | static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) | |
5610 | { | |
5611 | int i; | |
5612 | ||
5613 | for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { | |
5614 | ioa_cfg->bus_attr[i].bus = i; | |
5615 | ioa_cfg->bus_attr[i].qas_enabled = 0; | |
5616 | ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; | |
5617 | if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) | |
5618 | ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; | |
5619 | else | |
5620 | ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; | |
5621 | } | |
5622 | } | |
5623 | ||
5624 | /** | |
5625 | * ipr_init_ioa_cfg - Initialize IOA config struct | |
5626 | * @ioa_cfg: ioa config struct | |
5627 | * @host: scsi host struct | |
5628 | * @pdev: PCI dev struct | |
5629 | * | |
5630 | * Return value: | |
5631 | * none | |
5632 | **/ | |
5633 | static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, | |
5634 | struct Scsi_Host *host, struct pci_dev *pdev) | |
5635 | { | |
5636 | const struct ipr_interrupt_offsets *p; | |
5637 | struct ipr_interrupts *t; | |
5638 | void __iomem *base; | |
5639 | ||
5640 | ioa_cfg->host = host; | |
5641 | ioa_cfg->pdev = pdev; | |
5642 | ioa_cfg->log_level = ipr_log_level; | |
5643 | sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); | |
5644 | sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); | |
5645 | sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); | |
5646 | sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); | |
5647 | sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); | |
5648 | sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); | |
5649 | sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); | |
5650 | sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); | |
5651 | ||
5652 | INIT_LIST_HEAD(&ioa_cfg->free_q); | |
5653 | INIT_LIST_HEAD(&ioa_cfg->pending_q); | |
5654 | INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); | |
5655 | INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); | |
5656 | INIT_LIST_HEAD(&ioa_cfg->free_res_q); | |
5657 | INIT_LIST_HEAD(&ioa_cfg->used_res_q); | |
5658 | INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg); | |
5659 | init_waitqueue_head(&ioa_cfg->reset_wait_q); | |
5660 | ioa_cfg->sdt_state = INACTIVE; | |
5661 | ||
5662 | ipr_initialize_bus_attr(ioa_cfg); | |
5663 | ||
5664 | host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; | |
5665 | host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; | |
5666 | host->max_channel = IPR_MAX_BUS_TO_SCAN; | |
5667 | host->unique_id = host->host_no; | |
5668 | host->max_cmd_len = IPR_MAX_CDB_LEN; | |
5669 | pci_set_drvdata(pdev, ioa_cfg); | |
5670 | ||
5671 | p = &ioa_cfg->chip_cfg->regs; | |
5672 | t = &ioa_cfg->regs; | |
5673 | base = ioa_cfg->hdw_dma_regs; | |
5674 | ||
5675 | t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; | |
5676 | t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; | |
5677 | t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; | |
5678 | t->clr_interrupt_reg = base + p->clr_interrupt_reg; | |
5679 | t->sense_interrupt_reg = base + p->sense_interrupt_reg; | |
5680 | t->ioarrin_reg = base + p->ioarrin_reg; | |
5681 | t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; | |
5682 | t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; | |
5683 | t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; | |
5684 | } | |
5685 | ||
5686 | /** | |
5687 | * ipr_get_chip_cfg - Find adapter chip configuration | |
5688 | * @dev_id: PCI device id struct | |
5689 | * | |
5690 | * Return value: | |
5691 | * ptr to chip config on success / NULL on failure | |
5692 | **/ | |
5693 | static const struct ipr_chip_cfg_t * __devinit | |
5694 | ipr_get_chip_cfg(const struct pci_device_id *dev_id) | |
5695 | { | |
5696 | int i; | |
5697 | ||
5698 | if (dev_id->driver_data) | |
5699 | return (const struct ipr_chip_cfg_t *)dev_id->driver_data; | |
5700 | ||
5701 | for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) | |
5702 | if (ipr_chip[i].vendor == dev_id->vendor && | |
5703 | ipr_chip[i].device == dev_id->device) | |
5704 | return ipr_chip[i].cfg; | |
5705 | return NULL; | |
5706 | } | |
5707 | ||
5708 | /** | |
5709 | * ipr_probe_ioa - Allocates memory and does first stage of initialization | |
5710 | * @pdev: PCI device struct | |
5711 | * @dev_id: PCI device id struct | |
5712 | * | |
5713 | * Return value: | |
5714 | * 0 on success / non-zero on failure | |
5715 | **/ | |
5716 | static int __devinit ipr_probe_ioa(struct pci_dev *pdev, | |
5717 | const struct pci_device_id *dev_id) | |
5718 | { | |
5719 | struct ipr_ioa_cfg *ioa_cfg; | |
5720 | struct Scsi_Host *host; | |
5721 | unsigned long ipr_regs_pci; | |
5722 | void __iomem *ipr_regs; | |
5723 | u32 rc = PCIBIOS_SUCCESSFUL; | |
5724 | ||
5725 | ENTER; | |
5726 | ||
5727 | if ((rc = pci_enable_device(pdev))) { | |
5728 | dev_err(&pdev->dev, "Cannot enable adapter\n"); | |
5729 | goto out; | |
5730 | } | |
5731 | ||
5732 | dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); | |
5733 | ||
5734 | host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); | |
5735 | ||
5736 | if (!host) { | |
5737 | dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); | |
5738 | rc = -ENOMEM; | |
5739 | goto out_disable; | |
5740 | } | |
5741 | ||
5742 | ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; | |
5743 | memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); | |
5744 | ||
5745 | ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id); | |
5746 | ||
5747 | if (!ioa_cfg->chip_cfg) { | |
5748 | dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", | |
5749 | dev_id->vendor, dev_id->device); | |
5750 | goto out_scsi_host_put; | |
5751 | } | |
5752 | ||
5753 | ipr_regs_pci = pci_resource_start(pdev, 0); | |
5754 | ||
5755 | rc = pci_request_regions(pdev, IPR_NAME); | |
5756 | if (rc < 0) { | |
5757 | dev_err(&pdev->dev, | |
5758 | "Couldn't register memory range of registers\n"); | |
5759 | goto out_scsi_host_put; | |
5760 | } | |
5761 | ||
5762 | ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0)); | |
5763 | ||
5764 | if (!ipr_regs) { | |
5765 | dev_err(&pdev->dev, | |
5766 | "Couldn't map memory range of registers\n"); | |
5767 | rc = -ENOMEM; | |
5768 | goto out_release_regions; | |
5769 | } | |
5770 | ||
5771 | ioa_cfg->hdw_dma_regs = ipr_regs; | |
5772 | ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; | |
5773 | ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; | |
5774 | ||
5775 | ipr_init_ioa_cfg(ioa_cfg, host, pdev); | |
5776 | ||
5777 | pci_set_master(pdev); | |
5778 | ||
5779 | rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
5780 | if (rc < 0) { | |
5781 | dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); | |
5782 | goto cleanup_nomem; | |
5783 | } | |
5784 | ||
5785 | rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, | |
5786 | ioa_cfg->chip_cfg->cache_line_size); | |
5787 | ||
5788 | if (rc != PCIBIOS_SUCCESSFUL) { | |
5789 | dev_err(&pdev->dev, "Write of cache line size failed\n"); | |
5790 | rc = -EIO; | |
5791 | goto cleanup_nomem; | |
5792 | } | |
5793 | ||
5794 | /* Save away PCI config space for use following IOA reset */ | |
5795 | rc = pci_save_state(pdev); | |
5796 | ||
5797 | if (rc != PCIBIOS_SUCCESSFUL) { | |
5798 | dev_err(&pdev->dev, "Failed to save PCI config space\n"); | |
5799 | rc = -EIO; | |
5800 | goto cleanup_nomem; | |
5801 | } | |
5802 | ||
5803 | if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) | |
5804 | goto cleanup_nomem; | |
5805 | ||
5806 | if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) | |
5807 | goto cleanup_nomem; | |
5808 | ||
5809 | rc = ipr_alloc_mem(ioa_cfg); | |
5810 | if (rc < 0) { | |
5811 | dev_err(&pdev->dev, | |
5812 | "Couldn't allocate enough memory for device driver!\n"); | |
5813 | goto cleanup_nomem; | |
5814 | } | |
5815 | ||
5816 | ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); | |
5817 | rc = request_irq(pdev->irq, ipr_isr, SA_SHIRQ, IPR_NAME, ioa_cfg); | |
5818 | ||
5819 | if (rc) { | |
5820 | dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", | |
5821 | pdev->irq, rc); | |
5822 | goto cleanup_nolog; | |
5823 | } | |
5824 | ||
5825 | spin_lock(&ipr_driver_lock); | |
5826 | list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); | |
5827 | spin_unlock(&ipr_driver_lock); | |
5828 | ||
5829 | LEAVE; | |
5830 | out: | |
5831 | return rc; | |
5832 | ||
5833 | cleanup_nolog: | |
5834 | ipr_free_mem(ioa_cfg); | |
5835 | cleanup_nomem: | |
5836 | iounmap(ipr_regs); | |
5837 | out_release_regions: | |
5838 | pci_release_regions(pdev); | |
5839 | out_scsi_host_put: | |
5840 | scsi_host_put(host); | |
5841 | out_disable: | |
5842 | pci_disable_device(pdev); | |
5843 | goto out; | |
5844 | } | |
5845 | ||
5846 | /** | |
5847 | * ipr_scan_vsets - Scans for VSET devices | |
5848 | * @ioa_cfg: ioa config struct | |
5849 | * | |
5850 | * Description: Since the VSET resources do not follow SAM in that we can have | |
5851 | * sparse LUNs with no LUN 0, we have to scan for these ourselves. | |
5852 | * | |
5853 | * Return value: | |
5854 | * none | |
5855 | **/ | |
5856 | static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) | |
5857 | { | |
5858 | int target, lun; | |
5859 | ||
5860 | for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) | |
5861 | for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) | |
5862 | scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); | |
5863 | } | |
5864 | ||
5865 | /** | |
5866 | * ipr_initiate_ioa_bringdown - Bring down an adapter | |
5867 | * @ioa_cfg: ioa config struct | |
5868 | * @shutdown_type: shutdown type | |
5869 | * | |
5870 | * Description: This function will initiate bringing down the adapter. | |
5871 | * This consists of issuing an IOA shutdown to the adapter | |
5872 | * to flush the cache, and running BIST. | |
5873 | * If the caller needs to wait on the completion of the reset, | |
5874 | * the caller must sleep on the reset_wait_q. | |
5875 | * | |
5876 | * Return value: | |
5877 | * none | |
5878 | **/ | |
5879 | static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, | |
5880 | enum ipr_shutdown_type shutdown_type) | |
5881 | { | |
5882 | ENTER; | |
5883 | if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) | |
5884 | ioa_cfg->sdt_state = ABORT_DUMP; | |
5885 | ioa_cfg->reset_retries = 0; | |
5886 | ioa_cfg->in_ioa_bringdown = 1; | |
5887 | ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); | |
5888 | LEAVE; | |
5889 | } | |
5890 | ||
5891 | /** | |
5892 | * __ipr_remove - Remove a single adapter | |
5893 | * @pdev: pci device struct | |
5894 | * | |
5895 | * Adapter hot plug remove entry point. | |
5896 | * | |
5897 | * Return value: | |
5898 | * none | |
5899 | **/ | |
5900 | static void __ipr_remove(struct pci_dev *pdev) | |
5901 | { | |
5902 | unsigned long host_lock_flags = 0; | |
5903 | struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); | |
5904 | ENTER; | |
5905 | ||
5906 | spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); | |
5907 | ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); | |
5908 | ||
5909 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); | |
5910 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); | |
5cbf5eae | 5911 | flush_scheduled_work(); |
1da177e4 LT |
5912 | spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); |
5913 | ||
5914 | spin_lock(&ipr_driver_lock); | |
5915 | list_del(&ioa_cfg->queue); | |
5916 | spin_unlock(&ipr_driver_lock); | |
5917 | ||
5918 | if (ioa_cfg->sdt_state == ABORT_DUMP) | |
5919 | ioa_cfg->sdt_state = WAIT_FOR_DUMP; | |
5920 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); | |
5921 | ||
5922 | ipr_free_all_resources(ioa_cfg); | |
5923 | ||
5924 | LEAVE; | |
5925 | } | |
5926 | ||
5927 | /** | |
5928 | * ipr_remove - IOA hot plug remove entry point | |
5929 | * @pdev: pci device struct | |
5930 | * | |
5931 | * Adapter hot plug remove entry point. | |
5932 | * | |
5933 | * Return value: | |
5934 | * none | |
5935 | **/ | |
5936 | static void ipr_remove(struct pci_dev *pdev) | |
5937 | { | |
5938 | struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); | |
5939 | ||
5940 | ENTER; | |
5941 | ||
1da177e4 LT |
5942 | ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, |
5943 | &ipr_trace_attr); | |
5944 | ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj, | |
5945 | &ipr_dump_attr); | |
5946 | scsi_remove_host(ioa_cfg->host); | |
5947 | ||
5948 | __ipr_remove(pdev); | |
5949 | ||
5950 | LEAVE; | |
5951 | } | |
5952 | ||
5953 | /** | |
5954 | * ipr_probe - Adapter hot plug add entry point | |
5955 | * | |
5956 | * Return value: | |
5957 | * 0 on success / non-zero on failure | |
5958 | **/ | |
5959 | static int __devinit ipr_probe(struct pci_dev *pdev, | |
5960 | const struct pci_device_id *dev_id) | |
5961 | { | |
5962 | struct ipr_ioa_cfg *ioa_cfg; | |
5963 | int rc; | |
5964 | ||
5965 | rc = ipr_probe_ioa(pdev, dev_id); | |
5966 | ||
5967 | if (rc) | |
5968 | return rc; | |
5969 | ||
5970 | ioa_cfg = pci_get_drvdata(pdev); | |
5971 | rc = ipr_probe_ioa_part2(ioa_cfg); | |
5972 | ||
5973 | if (rc) { | |
5974 | __ipr_remove(pdev); | |
5975 | return rc; | |
5976 | } | |
5977 | ||
5978 | rc = scsi_add_host(ioa_cfg->host, &pdev->dev); | |
5979 | ||
5980 | if (rc) { | |
5981 | __ipr_remove(pdev); | |
5982 | return rc; | |
5983 | } | |
5984 | ||
5985 | rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj, | |
5986 | &ipr_trace_attr); | |
5987 | ||
5988 | if (rc) { | |
5989 | scsi_remove_host(ioa_cfg->host); | |
5990 | __ipr_remove(pdev); | |
5991 | return rc; | |
5992 | } | |
5993 | ||
5994 | rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj, | |
5995 | &ipr_dump_attr); | |
5996 | ||
5997 | if (rc) { | |
5998 | ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, | |
5999 | &ipr_trace_attr); | |
6000 | scsi_remove_host(ioa_cfg->host); | |
6001 | __ipr_remove(pdev); | |
6002 | return rc; | |
6003 | } | |
6004 | ||
6005 | scsi_scan_host(ioa_cfg->host); | |
6006 | ipr_scan_vsets(ioa_cfg); | |
6007 | scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); | |
6008 | ioa_cfg->allow_ml_add_del = 1; | |
6009 | schedule_work(&ioa_cfg->work_q); | |
6010 | return 0; | |
6011 | } | |
6012 | ||
6013 | /** | |
6014 | * ipr_shutdown - Shutdown handler. | |
d18c3db5 | 6015 | * @pdev: pci device struct |
1da177e4 LT |
6016 | * |
6017 | * This function is invoked upon system shutdown/reboot. It will issue | |
6018 | * an adapter shutdown to the adapter to flush the write cache. | |
6019 | * | |
6020 | * Return value: | |
6021 | * none | |
6022 | **/ | |
d18c3db5 | 6023 | static void ipr_shutdown(struct pci_dev *pdev) |
1da177e4 | 6024 | { |
d18c3db5 | 6025 | struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); |
1da177e4 LT |
6026 | unsigned long lock_flags = 0; |
6027 | ||
6028 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
6029 | ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); | |
6030 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
6031 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); | |
6032 | } | |
6033 | ||
6034 | static struct pci_device_id ipr_pci_table[] __devinitdata = { | |
6035 | { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, | |
6036 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, | |
6037 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, | |
6038 | { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, | |
6039 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, | |
6040 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, | |
6041 | { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, | |
6042 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, | |
6043 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, | |
6044 | { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, | |
6045 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, | |
6046 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, | |
6047 | { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, | |
6048 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, | |
6049 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, | |
6050 | { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, | |
6051 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, | |
6052 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, | |
6053 | { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, | |
6054 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, | |
6055 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, | |
6056 | { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, | |
6057 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, | |
6058 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, | |
6059 | { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, | |
6060 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, | |
6061 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, | |
6062 | { } | |
6063 | }; | |
6064 | MODULE_DEVICE_TABLE(pci, ipr_pci_table); | |
6065 | ||
6066 | static struct pci_driver ipr_driver = { | |
6067 | .name = IPR_NAME, | |
6068 | .id_table = ipr_pci_table, | |
6069 | .probe = ipr_probe, | |
6070 | .remove = ipr_remove, | |
d18c3db5 | 6071 | .shutdown = ipr_shutdown, |
1da177e4 LT |
6072 | }; |
6073 | ||
6074 | /** | |
6075 | * ipr_init - Module entry point | |
6076 | * | |
6077 | * Return value: | |
6078 | * 0 on success / negative value on failure | |
6079 | **/ | |
6080 | static int __init ipr_init(void) | |
6081 | { | |
6082 | ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", | |
6083 | IPR_DRIVER_VERSION, IPR_DRIVER_DATE); | |
6084 | ||
6085 | return pci_module_init(&ipr_driver); | |
6086 | } | |
6087 | ||
6088 | /** | |
6089 | * ipr_exit - Module unload | |
6090 | * | |
6091 | * Module unload entry point. | |
6092 | * | |
6093 | * Return value: | |
6094 | * none | |
6095 | **/ | |
6096 | static void __exit ipr_exit(void) | |
6097 | { | |
6098 | pci_unregister_driver(&ipr_driver); | |
6099 | } | |
6100 | ||
6101 | module_init(ipr_init); | |
6102 | module_exit(ipr_exit); |