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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. | |
cfc32139 | 892 | * @vpd: vendor/product id/sn struct |
1da177e4 LT |
893 | * |
894 | * Return value: | |
895 | * none | |
896 | **/ | |
cfc32139 | 897 | static void ipr_log_vpd(struct ipr_vpd *vpd) |
1da177e4 LT |
898 | { |
899 | char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN | |
900 | + IPR_SERIAL_NUM_LEN]; | |
901 | ||
cfc32139 | 902 | memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); |
903 | memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id, | |
1da177e4 LT |
904 | IPR_PROD_ID_LEN); |
905 | buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; | |
906 | ipr_err("Vendor/Product ID: %s\n", buffer); | |
907 | ||
cfc32139 | 908 | memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN); |
1da177e4 LT |
909 | buffer[IPR_SERIAL_NUM_LEN] = '\0'; |
910 | ipr_err(" Serial Number: %s\n", buffer); | |
911 | } | |
912 | ||
913 | /** | |
914 | * ipr_log_cache_error - Log a cache error. | |
915 | * @ioa_cfg: ioa config struct | |
916 | * @hostrcb: hostrcb struct | |
917 | * | |
918 | * Return value: | |
919 | * none | |
920 | **/ | |
921 | static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, | |
922 | struct ipr_hostrcb *hostrcb) | |
923 | { | |
924 | struct ipr_hostrcb_type_02_error *error = | |
925 | &hostrcb->hcam.u.error.u.type_02_error; | |
926 | ||
927 | ipr_err("-----Current Configuration-----\n"); | |
928 | ipr_err("Cache Directory Card Information:\n"); | |
cfc32139 | 929 | ipr_log_vpd(&error->ioa_vpd); |
1da177e4 | 930 | ipr_err("Adapter Card Information:\n"); |
cfc32139 | 931 | ipr_log_vpd(&error->cfc_vpd); |
1da177e4 LT |
932 | |
933 | ipr_err("-----Expected Configuration-----\n"); | |
934 | ipr_err("Cache Directory Card Information:\n"); | |
cfc32139 | 935 | ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd); |
1da177e4 | 936 | ipr_err("Adapter Card Information:\n"); |
cfc32139 | 937 | ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd); |
1da177e4 LT |
938 | |
939 | ipr_err("Additional IOA Data: %08X %08X %08X\n", | |
940 | be32_to_cpu(error->ioa_data[0]), | |
941 | be32_to_cpu(error->ioa_data[1]), | |
942 | be32_to_cpu(error->ioa_data[2])); | |
943 | } | |
944 | ||
945 | /** | |
946 | * ipr_log_config_error - Log a configuration error. | |
947 | * @ioa_cfg: ioa config struct | |
948 | * @hostrcb: hostrcb struct | |
949 | * | |
950 | * Return value: | |
951 | * none | |
952 | **/ | |
953 | static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, | |
954 | struct ipr_hostrcb *hostrcb) | |
955 | { | |
956 | int errors_logged, i; | |
957 | struct ipr_hostrcb_device_data_entry *dev_entry; | |
958 | struct ipr_hostrcb_type_03_error *error; | |
959 | ||
960 | error = &hostrcb->hcam.u.error.u.type_03_error; | |
961 | errors_logged = be32_to_cpu(error->errors_logged); | |
962 | ||
963 | ipr_err("Device Errors Detected/Logged: %d/%d\n", | |
964 | be32_to_cpu(error->errors_detected), errors_logged); | |
965 | ||
cfc32139 | 966 | dev_entry = error->dev; |
1da177e4 LT |
967 | |
968 | for (i = 0; i < errors_logged; i++, dev_entry++) { | |
969 | ipr_err_separator; | |
970 | ||
fa15b1f6 | 971 | ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); |
cfc32139 | 972 | ipr_log_vpd(&dev_entry->vpd); |
1da177e4 LT |
973 | |
974 | ipr_err("-----New Device Information-----\n"); | |
cfc32139 | 975 | ipr_log_vpd(&dev_entry->new_vpd); |
1da177e4 LT |
976 | |
977 | ipr_err("Cache Directory Card Information:\n"); | |
cfc32139 | 978 | ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd); |
1da177e4 LT |
979 | |
980 | ipr_err("Adapter Card Information:\n"); | |
cfc32139 | 981 | ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd); |
1da177e4 LT |
982 | |
983 | ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", | |
984 | be32_to_cpu(dev_entry->ioa_data[0]), | |
985 | be32_to_cpu(dev_entry->ioa_data[1]), | |
986 | be32_to_cpu(dev_entry->ioa_data[2]), | |
987 | be32_to_cpu(dev_entry->ioa_data[3]), | |
988 | be32_to_cpu(dev_entry->ioa_data[4])); | |
989 | } | |
990 | } | |
991 | ||
992 | /** | |
993 | * ipr_log_array_error - Log an array configuration error. | |
994 | * @ioa_cfg: ioa config struct | |
995 | * @hostrcb: hostrcb struct | |
996 | * | |
997 | * Return value: | |
998 | * none | |
999 | **/ | |
1000 | static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, | |
1001 | struct ipr_hostrcb *hostrcb) | |
1002 | { | |
1003 | int i; | |
1004 | struct ipr_hostrcb_type_04_error *error; | |
1005 | struct ipr_hostrcb_array_data_entry *array_entry; | |
1006 | const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; | |
1007 | ||
1008 | error = &hostrcb->hcam.u.error.u.type_04_error; | |
1009 | ||
1010 | ipr_err_separator; | |
1011 | ||
1012 | ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", | |
1013 | error->protection_level, | |
1014 | ioa_cfg->host->host_no, | |
1015 | error->last_func_vset_res_addr.bus, | |
1016 | error->last_func_vset_res_addr.target, | |
1017 | error->last_func_vset_res_addr.lun); | |
1018 | ||
1019 | ipr_err_separator; | |
1020 | ||
1021 | array_entry = error->array_member; | |
1022 | ||
1023 | for (i = 0; i < 18; i++) { | |
cfc32139 | 1024 | if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) |
1da177e4 LT |
1025 | continue; |
1026 | ||
fa15b1f6 | 1027 | if (be32_to_cpu(error->exposed_mode_adn) == i) |
1da177e4 | 1028 | ipr_err("Exposed Array Member %d:\n", i); |
fa15b1f6 | 1029 | else |
1da177e4 | 1030 | ipr_err("Array Member %d:\n", i); |
1da177e4 | 1031 | |
cfc32139 | 1032 | ipr_log_vpd(&array_entry->vpd); |
1da177e4 | 1033 | |
fa15b1f6 | 1034 | ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); |
1035 | ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, | |
1036 | "Expected Location"); | |
1da177e4 LT |
1037 | |
1038 | ipr_err_separator; | |
1039 | ||
1040 | if (i == 9) | |
1041 | array_entry = error->array_member2; | |
1042 | else | |
1043 | array_entry++; | |
1044 | } | |
1045 | } | |
1046 | ||
1047 | /** | |
1048 | * ipr_log_generic_error - Log an adapter error. | |
1049 | * @ioa_cfg: ioa config struct | |
1050 | * @hostrcb: hostrcb struct | |
1051 | * | |
1052 | * Return value: | |
1053 | * none | |
1054 | **/ | |
1055 | static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, | |
1056 | struct ipr_hostrcb *hostrcb) | |
1057 | { | |
1058 | int i; | |
1059 | int ioa_data_len = be32_to_cpu(hostrcb->hcam.length); | |
1060 | ||
1061 | if (ioa_data_len == 0) | |
1062 | return; | |
1063 | ||
1da177e4 LT |
1064 | for (i = 0; i < ioa_data_len / 4; i += 4) { |
1065 | ipr_err("%08X: %08X %08X %08X %08X\n", i*4, | |
1066 | be32_to_cpu(hostrcb->hcam.u.raw.data[i]), | |
1067 | be32_to_cpu(hostrcb->hcam.u.raw.data[i+1]), | |
1068 | be32_to_cpu(hostrcb->hcam.u.raw.data[i+2]), | |
1069 | be32_to_cpu(hostrcb->hcam.u.raw.data[i+3])); | |
1070 | } | |
1071 | } | |
1072 | ||
1073 | /** | |
1074 | * ipr_get_error - Find the specfied IOASC in the ipr_error_table. | |
1075 | * @ioasc: IOASC | |
1076 | * | |
1077 | * This function will return the index of into the ipr_error_table | |
1078 | * for the specified IOASC. If the IOASC is not in the table, | |
1079 | * 0 will be returned, which points to the entry used for unknown errors. | |
1080 | * | |
1081 | * Return value: | |
1082 | * index into the ipr_error_table | |
1083 | **/ | |
1084 | static u32 ipr_get_error(u32 ioasc) | |
1085 | { | |
1086 | int i; | |
1087 | ||
1088 | for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) | |
1089 | if (ipr_error_table[i].ioasc == ioasc) | |
1090 | return i; | |
1091 | ||
1092 | return 0; | |
1093 | } | |
1094 | ||
1095 | /** | |
1096 | * ipr_handle_log_data - Log an adapter error. | |
1097 | * @ioa_cfg: ioa config struct | |
1098 | * @hostrcb: hostrcb struct | |
1099 | * | |
1100 | * This function logs an adapter error to the system. | |
1101 | * | |
1102 | * Return value: | |
1103 | * none | |
1104 | **/ | |
1105 | static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, | |
1106 | struct ipr_hostrcb *hostrcb) | |
1107 | { | |
1108 | u32 ioasc; | |
1109 | int error_index; | |
1110 | ||
1111 | if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) | |
1112 | return; | |
1113 | ||
1114 | if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) | |
1115 | dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); | |
1116 | ||
1117 | ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc); | |
1118 | ||
1119 | if (ioasc == IPR_IOASC_BUS_WAS_RESET || | |
1120 | ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) { | |
1121 | /* Tell the midlayer we had a bus reset so it will handle the UA properly */ | |
1122 | scsi_report_bus_reset(ioa_cfg->host, | |
1123 | hostrcb->hcam.u.error.failing_dev_res_addr.bus); | |
1124 | } | |
1125 | ||
1126 | error_index = ipr_get_error(ioasc); | |
1127 | ||
1128 | if (!ipr_error_table[error_index].log_hcam) | |
1129 | return; | |
1130 | ||
1131 | if (ipr_is_device(&hostrcb->hcam.u.error.failing_dev_res_addr)) { | |
1132 | ipr_res_err(ioa_cfg, hostrcb->hcam.u.error.failing_dev_res_addr, | |
1133 | "%s\n", ipr_error_table[error_index].error); | |
1134 | } else { | |
1135 | dev_err(&ioa_cfg->pdev->dev, "%s\n", | |
1136 | ipr_error_table[error_index].error); | |
1137 | } | |
1138 | ||
1139 | /* Set indication we have logged an error */ | |
1140 | ioa_cfg->errors_logged++; | |
1141 | ||
1142 | if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) | |
1143 | return; | |
cf852037 | 1144 | if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw)) |
1145 | hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw)); | |
1da177e4 LT |
1146 | |
1147 | switch (hostrcb->hcam.overlay_id) { | |
1da177e4 LT |
1148 | case IPR_HOST_RCB_OVERLAY_ID_2: |
1149 | ipr_log_cache_error(ioa_cfg, hostrcb); | |
1150 | break; | |
1151 | case IPR_HOST_RCB_OVERLAY_ID_3: | |
1152 | ipr_log_config_error(ioa_cfg, hostrcb); | |
1153 | break; | |
1154 | case IPR_HOST_RCB_OVERLAY_ID_4: | |
1155 | case IPR_HOST_RCB_OVERLAY_ID_6: | |
1156 | ipr_log_array_error(ioa_cfg, hostrcb); | |
1157 | break; | |
cf852037 | 1158 | case IPR_HOST_RCB_OVERLAY_ID_1: |
1da177e4 | 1159 | case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: |
1da177e4 | 1160 | default: |
a9cfca96 | 1161 | ipr_log_generic_error(ioa_cfg, hostrcb); |
1da177e4 LT |
1162 | break; |
1163 | } | |
1164 | } | |
1165 | ||
1166 | /** | |
1167 | * ipr_process_error - Op done function for an adapter error log. | |
1168 | * @ipr_cmd: ipr command struct | |
1169 | * | |
1170 | * This function is the op done function for an error log host | |
1171 | * controlled async from the adapter. It will log the error and | |
1172 | * send the HCAM back to the adapter. | |
1173 | * | |
1174 | * Return value: | |
1175 | * none | |
1176 | **/ | |
1177 | static void ipr_process_error(struct ipr_cmnd *ipr_cmd) | |
1178 | { | |
1179 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
1180 | struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; | |
1181 | u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
1182 | ||
1183 | list_del(&hostrcb->queue); | |
1184 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
1185 | ||
1186 | if (!ioasc) { | |
1187 | ipr_handle_log_data(ioa_cfg, hostrcb); | |
1188 | } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) { | |
1189 | dev_err(&ioa_cfg->pdev->dev, | |
1190 | "Host RCB failed with IOASC: 0x%08X\n", ioasc); | |
1191 | } | |
1192 | ||
1193 | ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); | |
1194 | } | |
1195 | ||
1196 | /** | |
1197 | * ipr_timeout - An internally generated op has timed out. | |
1198 | * @ipr_cmd: ipr command struct | |
1199 | * | |
1200 | * This function blocks host requests and initiates an | |
1201 | * adapter reset. | |
1202 | * | |
1203 | * Return value: | |
1204 | * none | |
1205 | **/ | |
1206 | static void ipr_timeout(struct ipr_cmnd *ipr_cmd) | |
1207 | { | |
1208 | unsigned long lock_flags = 0; | |
1209 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
1210 | ||
1211 | ENTER; | |
1212 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1213 | ||
1214 | ioa_cfg->errors_logged++; | |
1215 | dev_err(&ioa_cfg->pdev->dev, | |
1216 | "Adapter being reset due to command timeout.\n"); | |
1217 | ||
1218 | if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) | |
1219 | ioa_cfg->sdt_state = GET_DUMP; | |
1220 | ||
1221 | if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) | |
1222 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); | |
1223 | ||
1224 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1225 | LEAVE; | |
1226 | } | |
1227 | ||
1228 | /** | |
1229 | * ipr_oper_timeout - Adapter timed out transitioning to operational | |
1230 | * @ipr_cmd: ipr command struct | |
1231 | * | |
1232 | * This function blocks host requests and initiates an | |
1233 | * adapter reset. | |
1234 | * | |
1235 | * Return value: | |
1236 | * none | |
1237 | **/ | |
1238 | static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) | |
1239 | { | |
1240 | unsigned long lock_flags = 0; | |
1241 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
1242 | ||
1243 | ENTER; | |
1244 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1245 | ||
1246 | ioa_cfg->errors_logged++; | |
1247 | dev_err(&ioa_cfg->pdev->dev, | |
1248 | "Adapter timed out transitioning to operational.\n"); | |
1249 | ||
1250 | if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) | |
1251 | ioa_cfg->sdt_state = GET_DUMP; | |
1252 | ||
1253 | if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { | |
1254 | if (ipr_fastfail) | |
1255 | ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; | |
1256 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); | |
1257 | } | |
1258 | ||
1259 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1260 | LEAVE; | |
1261 | } | |
1262 | ||
1263 | /** | |
1264 | * ipr_reset_reload - Reset/Reload the IOA | |
1265 | * @ioa_cfg: ioa config struct | |
1266 | * @shutdown_type: shutdown type | |
1267 | * | |
1268 | * This function resets the adapter and re-initializes it. | |
1269 | * This function assumes that all new host commands have been stopped. | |
1270 | * Return value: | |
1271 | * SUCCESS / FAILED | |
1272 | **/ | |
1273 | static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg, | |
1274 | enum ipr_shutdown_type shutdown_type) | |
1275 | { | |
1276 | if (!ioa_cfg->in_reset_reload) | |
1277 | ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); | |
1278 | ||
1279 | spin_unlock_irq(ioa_cfg->host->host_lock); | |
1280 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); | |
1281 | spin_lock_irq(ioa_cfg->host->host_lock); | |
1282 | ||
1283 | /* If we got hit with a host reset while we were already resetting | |
1284 | the adapter for some reason, and the reset failed. */ | |
1285 | if (ioa_cfg->ioa_is_dead) { | |
1286 | ipr_trace; | |
1287 | return FAILED; | |
1288 | } | |
1289 | ||
1290 | return SUCCESS; | |
1291 | } | |
1292 | ||
1293 | /** | |
1294 | * ipr_find_ses_entry - Find matching SES in SES table | |
1295 | * @res: resource entry struct of SES | |
1296 | * | |
1297 | * Return value: | |
1298 | * pointer to SES table entry / NULL on failure | |
1299 | **/ | |
1300 | static const struct ipr_ses_table_entry * | |
1301 | ipr_find_ses_entry(struct ipr_resource_entry *res) | |
1302 | { | |
1303 | int i, j, matches; | |
1304 | const struct ipr_ses_table_entry *ste = ipr_ses_table; | |
1305 | ||
1306 | for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { | |
1307 | for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { | |
1308 | if (ste->compare_product_id_byte[j] == 'X') { | |
1309 | if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j]) | |
1310 | matches++; | |
1311 | else | |
1312 | break; | |
1313 | } else | |
1314 | matches++; | |
1315 | } | |
1316 | ||
1317 | if (matches == IPR_PROD_ID_LEN) | |
1318 | return ste; | |
1319 | } | |
1320 | ||
1321 | return NULL; | |
1322 | } | |
1323 | ||
1324 | /** | |
1325 | * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus | |
1326 | * @ioa_cfg: ioa config struct | |
1327 | * @bus: SCSI bus | |
1328 | * @bus_width: bus width | |
1329 | * | |
1330 | * Return value: | |
1331 | * SCSI bus speed in units of 100KHz, 1600 is 160 MHz | |
1332 | * For a 2-byte wide SCSI bus, the maximum transfer speed is | |
1333 | * twice the maximum transfer rate (e.g. for a wide enabled bus, | |
1334 | * max 160MHz = max 320MB/sec). | |
1335 | **/ | |
1336 | static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) | |
1337 | { | |
1338 | struct ipr_resource_entry *res; | |
1339 | const struct ipr_ses_table_entry *ste; | |
1340 | u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); | |
1341 | ||
1342 | /* Loop through each config table entry in the config table buffer */ | |
1343 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { | |
1344 | if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data))) | |
1345 | continue; | |
1346 | ||
1347 | if (bus != res->cfgte.res_addr.bus) | |
1348 | continue; | |
1349 | ||
1350 | if (!(ste = ipr_find_ses_entry(res))) | |
1351 | continue; | |
1352 | ||
1353 | max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); | |
1354 | } | |
1355 | ||
1356 | return max_xfer_rate; | |
1357 | } | |
1358 | ||
1359 | /** | |
1360 | * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA | |
1361 | * @ioa_cfg: ioa config struct | |
1362 | * @max_delay: max delay in micro-seconds to wait | |
1363 | * | |
1364 | * Waits for an IODEBUG ACK from the IOA, doing busy looping. | |
1365 | * | |
1366 | * Return value: | |
1367 | * 0 on success / other on failure | |
1368 | **/ | |
1369 | static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) | |
1370 | { | |
1371 | volatile u32 pcii_reg; | |
1372 | int delay = 1; | |
1373 | ||
1374 | /* Read interrupt reg until IOA signals IO Debug Acknowledge */ | |
1375 | while (delay < max_delay) { | |
1376 | pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); | |
1377 | ||
1378 | if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) | |
1379 | return 0; | |
1380 | ||
1381 | /* udelay cannot be used if delay is more than a few milliseconds */ | |
1382 | if ((delay / 1000) > MAX_UDELAY_MS) | |
1383 | mdelay(delay / 1000); | |
1384 | else | |
1385 | udelay(delay); | |
1386 | ||
1387 | delay += delay; | |
1388 | } | |
1389 | return -EIO; | |
1390 | } | |
1391 | ||
1392 | /** | |
1393 | * ipr_get_ldump_data_section - Dump IOA memory | |
1394 | * @ioa_cfg: ioa config struct | |
1395 | * @start_addr: adapter address to dump | |
1396 | * @dest: destination kernel buffer | |
1397 | * @length_in_words: length to dump in 4 byte words | |
1398 | * | |
1399 | * Return value: | |
1400 | * 0 on success / -EIO on failure | |
1401 | **/ | |
1402 | static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, | |
1403 | u32 start_addr, | |
1404 | __be32 *dest, u32 length_in_words) | |
1405 | { | |
1406 | volatile u32 temp_pcii_reg; | |
1407 | int i, delay = 0; | |
1408 | ||
1409 | /* Write IOA interrupt reg starting LDUMP state */ | |
1410 | writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), | |
1411 | ioa_cfg->regs.set_uproc_interrupt_reg); | |
1412 | ||
1413 | /* Wait for IO debug acknowledge */ | |
1414 | if (ipr_wait_iodbg_ack(ioa_cfg, | |
1415 | IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { | |
1416 | dev_err(&ioa_cfg->pdev->dev, | |
1417 | "IOA dump long data transfer timeout\n"); | |
1418 | return -EIO; | |
1419 | } | |
1420 | ||
1421 | /* Signal LDUMP interlocked - clear IO debug ack */ | |
1422 | writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, | |
1423 | ioa_cfg->regs.clr_interrupt_reg); | |
1424 | ||
1425 | /* Write Mailbox with starting address */ | |
1426 | writel(start_addr, ioa_cfg->ioa_mailbox); | |
1427 | ||
1428 | /* Signal address valid - clear IOA Reset alert */ | |
1429 | writel(IPR_UPROCI_RESET_ALERT, | |
1430 | ioa_cfg->regs.clr_uproc_interrupt_reg); | |
1431 | ||
1432 | for (i = 0; i < length_in_words; i++) { | |
1433 | /* Wait for IO debug acknowledge */ | |
1434 | if (ipr_wait_iodbg_ack(ioa_cfg, | |
1435 | IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { | |
1436 | dev_err(&ioa_cfg->pdev->dev, | |
1437 | "IOA dump short data transfer timeout\n"); | |
1438 | return -EIO; | |
1439 | } | |
1440 | ||
1441 | /* Read data from mailbox and increment destination pointer */ | |
1442 | *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); | |
1443 | dest++; | |
1444 | ||
1445 | /* For all but the last word of data, signal data received */ | |
1446 | if (i < (length_in_words - 1)) { | |
1447 | /* Signal dump data received - Clear IO debug Ack */ | |
1448 | writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, | |
1449 | ioa_cfg->regs.clr_interrupt_reg); | |
1450 | } | |
1451 | } | |
1452 | ||
1453 | /* Signal end of block transfer. Set reset alert then clear IO debug ack */ | |
1454 | writel(IPR_UPROCI_RESET_ALERT, | |
1455 | ioa_cfg->regs.set_uproc_interrupt_reg); | |
1456 | ||
1457 | writel(IPR_UPROCI_IO_DEBUG_ALERT, | |
1458 | ioa_cfg->regs.clr_uproc_interrupt_reg); | |
1459 | ||
1460 | /* Signal dump data received - Clear IO debug Ack */ | |
1461 | writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, | |
1462 | ioa_cfg->regs.clr_interrupt_reg); | |
1463 | ||
1464 | /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ | |
1465 | while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { | |
1466 | temp_pcii_reg = | |
1467 | readl(ioa_cfg->regs.sense_uproc_interrupt_reg); | |
1468 | ||
1469 | if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) | |
1470 | return 0; | |
1471 | ||
1472 | udelay(10); | |
1473 | delay += 10; | |
1474 | } | |
1475 | ||
1476 | return 0; | |
1477 | } | |
1478 | ||
1479 | #ifdef CONFIG_SCSI_IPR_DUMP | |
1480 | /** | |
1481 | * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer | |
1482 | * @ioa_cfg: ioa config struct | |
1483 | * @pci_address: adapter address | |
1484 | * @length: length of data to copy | |
1485 | * | |
1486 | * Copy data from PCI adapter to kernel buffer. | |
1487 | * Note: length MUST be a 4 byte multiple | |
1488 | * Return value: | |
1489 | * 0 on success / other on failure | |
1490 | **/ | |
1491 | static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, | |
1492 | unsigned long pci_address, u32 length) | |
1493 | { | |
1494 | int bytes_copied = 0; | |
1495 | int cur_len, rc, rem_len, rem_page_len; | |
1496 | __be32 *page; | |
1497 | unsigned long lock_flags = 0; | |
1498 | struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; | |
1499 | ||
1500 | while (bytes_copied < length && | |
1501 | (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) { | |
1502 | if (ioa_dump->page_offset >= PAGE_SIZE || | |
1503 | ioa_dump->page_offset == 0) { | |
1504 | page = (__be32 *)__get_free_page(GFP_ATOMIC); | |
1505 | ||
1506 | if (!page) { | |
1507 | ipr_trace; | |
1508 | return bytes_copied; | |
1509 | } | |
1510 | ||
1511 | ioa_dump->page_offset = 0; | |
1512 | ioa_dump->ioa_data[ioa_dump->next_page_index] = page; | |
1513 | ioa_dump->next_page_index++; | |
1514 | } else | |
1515 | page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; | |
1516 | ||
1517 | rem_len = length - bytes_copied; | |
1518 | rem_page_len = PAGE_SIZE - ioa_dump->page_offset; | |
1519 | cur_len = min(rem_len, rem_page_len); | |
1520 | ||
1521 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1522 | if (ioa_cfg->sdt_state == ABORT_DUMP) { | |
1523 | rc = -EIO; | |
1524 | } else { | |
1525 | rc = ipr_get_ldump_data_section(ioa_cfg, | |
1526 | pci_address + bytes_copied, | |
1527 | &page[ioa_dump->page_offset / 4], | |
1528 | (cur_len / sizeof(u32))); | |
1529 | } | |
1530 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1531 | ||
1532 | if (!rc) { | |
1533 | ioa_dump->page_offset += cur_len; | |
1534 | bytes_copied += cur_len; | |
1535 | } else { | |
1536 | ipr_trace; | |
1537 | break; | |
1538 | } | |
1539 | schedule(); | |
1540 | } | |
1541 | ||
1542 | return bytes_copied; | |
1543 | } | |
1544 | ||
1545 | /** | |
1546 | * ipr_init_dump_entry_hdr - Initialize a dump entry header. | |
1547 | * @hdr: dump entry header struct | |
1548 | * | |
1549 | * Return value: | |
1550 | * nothing | |
1551 | **/ | |
1552 | static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) | |
1553 | { | |
1554 | hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; | |
1555 | hdr->num_elems = 1; | |
1556 | hdr->offset = sizeof(*hdr); | |
1557 | hdr->status = IPR_DUMP_STATUS_SUCCESS; | |
1558 | } | |
1559 | ||
1560 | /** | |
1561 | * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. | |
1562 | * @ioa_cfg: ioa config struct | |
1563 | * @driver_dump: driver dump struct | |
1564 | * | |
1565 | * Return value: | |
1566 | * nothing | |
1567 | **/ | |
1568 | static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, | |
1569 | struct ipr_driver_dump *driver_dump) | |
1570 | { | |
1571 | struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; | |
1572 | ||
1573 | ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); | |
1574 | driver_dump->ioa_type_entry.hdr.len = | |
1575 | sizeof(struct ipr_dump_ioa_type_entry) - | |
1576 | sizeof(struct ipr_dump_entry_header); | |
1577 | driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; | |
1578 | driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; | |
1579 | driver_dump->ioa_type_entry.type = ioa_cfg->type; | |
1580 | driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | | |
1581 | (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | | |
1582 | ucode_vpd->minor_release[1]; | |
1583 | driver_dump->hdr.num_entries++; | |
1584 | } | |
1585 | ||
1586 | /** | |
1587 | * ipr_dump_version_data - Fill in the driver version in the dump. | |
1588 | * @ioa_cfg: ioa config struct | |
1589 | * @driver_dump: driver dump struct | |
1590 | * | |
1591 | * Return value: | |
1592 | * nothing | |
1593 | **/ | |
1594 | static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, | |
1595 | struct ipr_driver_dump *driver_dump) | |
1596 | { | |
1597 | ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); | |
1598 | driver_dump->version_entry.hdr.len = | |
1599 | sizeof(struct ipr_dump_version_entry) - | |
1600 | sizeof(struct ipr_dump_entry_header); | |
1601 | driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; | |
1602 | driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; | |
1603 | strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); | |
1604 | driver_dump->hdr.num_entries++; | |
1605 | } | |
1606 | ||
1607 | /** | |
1608 | * ipr_dump_trace_data - Fill in the IOA trace in the dump. | |
1609 | * @ioa_cfg: ioa config struct | |
1610 | * @driver_dump: driver dump struct | |
1611 | * | |
1612 | * Return value: | |
1613 | * nothing | |
1614 | **/ | |
1615 | static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, | |
1616 | struct ipr_driver_dump *driver_dump) | |
1617 | { | |
1618 | ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); | |
1619 | driver_dump->trace_entry.hdr.len = | |
1620 | sizeof(struct ipr_dump_trace_entry) - | |
1621 | sizeof(struct ipr_dump_entry_header); | |
1622 | driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; | |
1623 | driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; | |
1624 | memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); | |
1625 | driver_dump->hdr.num_entries++; | |
1626 | } | |
1627 | ||
1628 | /** | |
1629 | * ipr_dump_location_data - Fill in the IOA location in the dump. | |
1630 | * @ioa_cfg: ioa config struct | |
1631 | * @driver_dump: driver dump struct | |
1632 | * | |
1633 | * Return value: | |
1634 | * nothing | |
1635 | **/ | |
1636 | static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, | |
1637 | struct ipr_driver_dump *driver_dump) | |
1638 | { | |
1639 | ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); | |
1640 | driver_dump->location_entry.hdr.len = | |
1641 | sizeof(struct ipr_dump_location_entry) - | |
1642 | sizeof(struct ipr_dump_entry_header); | |
1643 | driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; | |
1644 | driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; | |
1645 | strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id); | |
1646 | driver_dump->hdr.num_entries++; | |
1647 | } | |
1648 | ||
1649 | /** | |
1650 | * ipr_get_ioa_dump - Perform a dump of the driver and adapter. | |
1651 | * @ioa_cfg: ioa config struct | |
1652 | * @dump: dump struct | |
1653 | * | |
1654 | * Return value: | |
1655 | * nothing | |
1656 | **/ | |
1657 | static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) | |
1658 | { | |
1659 | unsigned long start_addr, sdt_word; | |
1660 | unsigned long lock_flags = 0; | |
1661 | struct ipr_driver_dump *driver_dump = &dump->driver_dump; | |
1662 | struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; | |
1663 | u32 num_entries, start_off, end_off; | |
1664 | u32 bytes_to_copy, bytes_copied, rc; | |
1665 | struct ipr_sdt *sdt; | |
1666 | int i; | |
1667 | ||
1668 | ENTER; | |
1669 | ||
1670 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1671 | ||
1672 | if (ioa_cfg->sdt_state != GET_DUMP) { | |
1673 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1674 | return; | |
1675 | } | |
1676 | ||
1677 | start_addr = readl(ioa_cfg->ioa_mailbox); | |
1678 | ||
1679 | if (!ipr_sdt_is_fmt2(start_addr)) { | |
1680 | dev_err(&ioa_cfg->pdev->dev, | |
1681 | "Invalid dump table format: %lx\n", start_addr); | |
1682 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1683 | return; | |
1684 | } | |
1685 | ||
1686 | dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); | |
1687 | ||
1688 | driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; | |
1689 | ||
1690 | /* Initialize the overall dump header */ | |
1691 | driver_dump->hdr.len = sizeof(struct ipr_driver_dump); | |
1692 | driver_dump->hdr.num_entries = 1; | |
1693 | driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); | |
1694 | driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; | |
1695 | driver_dump->hdr.os = IPR_DUMP_OS_LINUX; | |
1696 | driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; | |
1697 | ||
1698 | ipr_dump_version_data(ioa_cfg, driver_dump); | |
1699 | ipr_dump_location_data(ioa_cfg, driver_dump); | |
1700 | ipr_dump_ioa_type_data(ioa_cfg, driver_dump); | |
1701 | ipr_dump_trace_data(ioa_cfg, driver_dump); | |
1702 | ||
1703 | /* Update dump_header */ | |
1704 | driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); | |
1705 | ||
1706 | /* IOA Dump entry */ | |
1707 | ipr_init_dump_entry_hdr(&ioa_dump->hdr); | |
1708 | ioa_dump->format = IPR_SDT_FMT2; | |
1709 | ioa_dump->hdr.len = 0; | |
1710 | ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; | |
1711 | ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; | |
1712 | ||
1713 | /* First entries in sdt are actually a list of dump addresses and | |
1714 | lengths to gather the real dump data. sdt represents the pointer | |
1715 | to the ioa generated dump table. Dump data will be extracted based | |
1716 | on entries in this table */ | |
1717 | sdt = &ioa_dump->sdt; | |
1718 | ||
1719 | rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, | |
1720 | sizeof(struct ipr_sdt) / sizeof(__be32)); | |
1721 | ||
1722 | /* Smart Dump table is ready to use and the first entry is valid */ | |
1723 | if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) { | |
1724 | dev_err(&ioa_cfg->pdev->dev, | |
1725 | "Dump of IOA failed. Dump table not valid: %d, %X.\n", | |
1726 | rc, be32_to_cpu(sdt->hdr.state)); | |
1727 | driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; | |
1728 | ioa_cfg->sdt_state = DUMP_OBTAINED; | |
1729 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1730 | return; | |
1731 | } | |
1732 | ||
1733 | num_entries = be32_to_cpu(sdt->hdr.num_entries_used); | |
1734 | ||
1735 | if (num_entries > IPR_NUM_SDT_ENTRIES) | |
1736 | num_entries = IPR_NUM_SDT_ENTRIES; | |
1737 | ||
1738 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1739 | ||
1740 | for (i = 0; i < num_entries; i++) { | |
1741 | if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) { | |
1742 | driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; | |
1743 | break; | |
1744 | } | |
1745 | ||
1746 | if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { | |
1747 | sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset); | |
1748 | start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; | |
1749 | end_off = be32_to_cpu(sdt->entry[i].end_offset); | |
1750 | ||
1751 | if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) { | |
1752 | bytes_to_copy = end_off - start_off; | |
1753 | if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) { | |
1754 | sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; | |
1755 | continue; | |
1756 | } | |
1757 | ||
1758 | /* Copy data from adapter to driver buffers */ | |
1759 | bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, | |
1760 | bytes_to_copy); | |
1761 | ||
1762 | ioa_dump->hdr.len += bytes_copied; | |
1763 | ||
1764 | if (bytes_copied != bytes_to_copy) { | |
1765 | driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; | |
1766 | break; | |
1767 | } | |
1768 | } | |
1769 | } | |
1770 | } | |
1771 | ||
1772 | dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); | |
1773 | ||
1774 | /* Update dump_header */ | |
1775 | driver_dump->hdr.len += ioa_dump->hdr.len; | |
1776 | wmb(); | |
1777 | ioa_cfg->sdt_state = DUMP_OBTAINED; | |
1778 | LEAVE; | |
1779 | } | |
1780 | ||
1781 | #else | |
1782 | #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0) | |
1783 | #endif | |
1784 | ||
1785 | /** | |
1786 | * ipr_release_dump - Free adapter dump memory | |
1787 | * @kref: kref struct | |
1788 | * | |
1789 | * Return value: | |
1790 | * nothing | |
1791 | **/ | |
1792 | static void ipr_release_dump(struct kref *kref) | |
1793 | { | |
1794 | struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref); | |
1795 | struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; | |
1796 | unsigned long lock_flags = 0; | |
1797 | int i; | |
1798 | ||
1799 | ENTER; | |
1800 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1801 | ioa_cfg->dump = NULL; | |
1802 | ioa_cfg->sdt_state = INACTIVE; | |
1803 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1804 | ||
1805 | for (i = 0; i < dump->ioa_dump.next_page_index; i++) | |
1806 | free_page((unsigned long) dump->ioa_dump.ioa_data[i]); | |
1807 | ||
1808 | kfree(dump); | |
1809 | LEAVE; | |
1810 | } | |
1811 | ||
1812 | /** | |
1813 | * ipr_worker_thread - Worker thread | |
1814 | * @data: ioa config struct | |
1815 | * | |
1816 | * Called at task level from a work thread. This function takes care | |
1817 | * of adding and removing device from the mid-layer as configuration | |
1818 | * changes are detected by the adapter. | |
1819 | * | |
1820 | * Return value: | |
1821 | * nothing | |
1822 | **/ | |
1823 | static void ipr_worker_thread(void *data) | |
1824 | { | |
1825 | unsigned long lock_flags; | |
1826 | struct ipr_resource_entry *res; | |
1827 | struct scsi_device *sdev; | |
1828 | struct ipr_dump *dump; | |
1829 | struct ipr_ioa_cfg *ioa_cfg = data; | |
1830 | u8 bus, target, lun; | |
1831 | int did_work; | |
1832 | ||
1833 | ENTER; | |
1834 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1835 | ||
1836 | if (ioa_cfg->sdt_state == GET_DUMP) { | |
1837 | dump = ioa_cfg->dump; | |
1838 | if (!dump) { | |
1839 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1840 | return; | |
1841 | } | |
1842 | kref_get(&dump->kref); | |
1843 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1844 | ipr_get_ioa_dump(ioa_cfg, dump); | |
1845 | kref_put(&dump->kref, ipr_release_dump); | |
1846 | ||
1847 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1848 | if (ioa_cfg->sdt_state == DUMP_OBTAINED) | |
1849 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); | |
1850 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1851 | return; | |
1852 | } | |
1853 | ||
1854 | restart: | |
1855 | do { | |
1856 | did_work = 0; | |
1857 | if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) { | |
1858 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1859 | return; | |
1860 | } | |
1861 | ||
1862 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { | |
1863 | if (res->del_from_ml && res->sdev) { | |
1864 | did_work = 1; | |
1865 | sdev = res->sdev; | |
1866 | if (!scsi_device_get(sdev)) { | |
1867 | res->sdev = NULL; | |
1868 | list_move_tail(&res->queue, &ioa_cfg->free_res_q); | |
1869 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1870 | scsi_remove_device(sdev); | |
1871 | scsi_device_put(sdev); | |
1872 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1873 | } | |
1874 | break; | |
1875 | } | |
1876 | } | |
1877 | } while(did_work); | |
1878 | ||
1879 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { | |
1880 | if (res->add_to_ml) { | |
1881 | bus = res->cfgte.res_addr.bus; | |
1882 | target = res->cfgte.res_addr.target; | |
1883 | lun = res->cfgte.res_addr.lun; | |
1884 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1885 | scsi_add_device(ioa_cfg->host, bus, target, lun); | |
1886 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1887 | goto restart; | |
1888 | } | |
1889 | } | |
1890 | ||
1891 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1892 | kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE, NULL); | |
1893 | LEAVE; | |
1894 | } | |
1895 | ||
1896 | #ifdef CONFIG_SCSI_IPR_TRACE | |
1897 | /** | |
1898 | * ipr_read_trace - Dump the adapter trace | |
1899 | * @kobj: kobject struct | |
1900 | * @buf: buffer | |
1901 | * @off: offset | |
1902 | * @count: buffer size | |
1903 | * | |
1904 | * Return value: | |
1905 | * number of bytes printed to buffer | |
1906 | **/ | |
1907 | static ssize_t ipr_read_trace(struct kobject *kobj, char *buf, | |
1908 | loff_t off, size_t count) | |
1909 | { | |
1910 | struct class_device *cdev = container_of(kobj,struct class_device,kobj); | |
1911 | struct Scsi_Host *shost = class_to_shost(cdev); | |
1912 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
1913 | unsigned long lock_flags = 0; | |
1914 | int size = IPR_TRACE_SIZE; | |
1915 | char *src = (char *)ioa_cfg->trace; | |
1916 | ||
1917 | if (off > size) | |
1918 | return 0; | |
1919 | if (off + count > size) { | |
1920 | size -= off; | |
1921 | count = size; | |
1922 | } | |
1923 | ||
1924 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1925 | memcpy(buf, &src[off], count); | |
1926 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1927 | return count; | |
1928 | } | |
1929 | ||
1930 | static struct bin_attribute ipr_trace_attr = { | |
1931 | .attr = { | |
1932 | .name = "trace", | |
1933 | .mode = S_IRUGO, | |
1934 | }, | |
1935 | .size = 0, | |
1936 | .read = ipr_read_trace, | |
1937 | }; | |
1938 | #endif | |
1939 | ||
1940 | /** | |
1941 | * ipr_show_fw_version - Show the firmware version | |
1942 | * @class_dev: class device struct | |
1943 | * @buf: buffer | |
1944 | * | |
1945 | * Return value: | |
1946 | * number of bytes printed to buffer | |
1947 | **/ | |
1948 | static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf) | |
1949 | { | |
1950 | struct Scsi_Host *shost = class_to_shost(class_dev); | |
1951 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
1952 | struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; | |
1953 | unsigned long lock_flags = 0; | |
1954 | int len; | |
1955 | ||
1956 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1957 | len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", | |
1958 | ucode_vpd->major_release, ucode_vpd->card_type, | |
1959 | ucode_vpd->minor_release[0], | |
1960 | ucode_vpd->minor_release[1]); | |
1961 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1962 | return len; | |
1963 | } | |
1964 | ||
1965 | static struct class_device_attribute ipr_fw_version_attr = { | |
1966 | .attr = { | |
1967 | .name = "fw_version", | |
1968 | .mode = S_IRUGO, | |
1969 | }, | |
1970 | .show = ipr_show_fw_version, | |
1971 | }; | |
1972 | ||
1973 | /** | |
1974 | * ipr_show_log_level - Show the adapter's error logging level | |
1975 | * @class_dev: class device struct | |
1976 | * @buf: buffer | |
1977 | * | |
1978 | * Return value: | |
1979 | * number of bytes printed to buffer | |
1980 | **/ | |
1981 | static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf) | |
1982 | { | |
1983 | struct Scsi_Host *shost = class_to_shost(class_dev); | |
1984 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
1985 | unsigned long lock_flags = 0; | |
1986 | int len; | |
1987 | ||
1988 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
1989 | len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); | |
1990 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
1991 | return len; | |
1992 | } | |
1993 | ||
1994 | /** | |
1995 | * ipr_store_log_level - Change the adapter's error logging level | |
1996 | * @class_dev: class device struct | |
1997 | * @buf: buffer | |
1998 | * | |
1999 | * Return value: | |
2000 | * number of bytes printed to buffer | |
2001 | **/ | |
2002 | static ssize_t ipr_store_log_level(struct class_device *class_dev, | |
2003 | const char *buf, size_t count) | |
2004 | { | |
2005 | struct Scsi_Host *shost = class_to_shost(class_dev); | |
2006 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
2007 | unsigned long lock_flags = 0; | |
2008 | ||
2009 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2010 | ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); | |
2011 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2012 | return strlen(buf); | |
2013 | } | |
2014 | ||
2015 | static struct class_device_attribute ipr_log_level_attr = { | |
2016 | .attr = { | |
2017 | .name = "log_level", | |
2018 | .mode = S_IRUGO | S_IWUSR, | |
2019 | }, | |
2020 | .show = ipr_show_log_level, | |
2021 | .store = ipr_store_log_level | |
2022 | }; | |
2023 | ||
2024 | /** | |
2025 | * ipr_store_diagnostics - IOA Diagnostics interface | |
2026 | * @class_dev: class_device struct | |
2027 | * @buf: buffer | |
2028 | * @count: buffer size | |
2029 | * | |
2030 | * This function will reset the adapter and wait a reasonable | |
2031 | * amount of time for any errors that the adapter might log. | |
2032 | * | |
2033 | * Return value: | |
2034 | * count on success / other on failure | |
2035 | **/ | |
2036 | static ssize_t ipr_store_diagnostics(struct class_device *class_dev, | |
2037 | const char *buf, size_t count) | |
2038 | { | |
2039 | struct Scsi_Host *shost = class_to_shost(class_dev); | |
2040 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
2041 | unsigned long lock_flags = 0; | |
2042 | int rc = count; | |
2043 | ||
2044 | if (!capable(CAP_SYS_ADMIN)) | |
2045 | return -EACCES; | |
2046 | ||
2047 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); | |
2048 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2049 | ioa_cfg->errors_logged = 0; | |
2050 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); | |
2051 | ||
2052 | if (ioa_cfg->in_reset_reload) { | |
2053 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2054 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); | |
2055 | ||
2056 | /* Wait for a second for any errors to be logged */ | |
2057 | msleep(1000); | |
2058 | } else { | |
2059 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2060 | return -EIO; | |
2061 | } | |
2062 | ||
2063 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2064 | if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) | |
2065 | rc = -EIO; | |
2066 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2067 | ||
2068 | return rc; | |
2069 | } | |
2070 | ||
2071 | static struct class_device_attribute ipr_diagnostics_attr = { | |
2072 | .attr = { | |
2073 | .name = "run_diagnostics", | |
2074 | .mode = S_IWUSR, | |
2075 | }, | |
2076 | .store = ipr_store_diagnostics | |
2077 | }; | |
2078 | ||
2079 | /** | |
2080 | * ipr_store_reset_adapter - Reset the adapter | |
2081 | * @class_dev: class_device struct | |
2082 | * @buf: buffer | |
2083 | * @count: buffer size | |
2084 | * | |
2085 | * This function will reset the adapter. | |
2086 | * | |
2087 | * Return value: | |
2088 | * count on success / other on failure | |
2089 | **/ | |
2090 | static ssize_t ipr_store_reset_adapter(struct class_device *class_dev, | |
2091 | const char *buf, size_t count) | |
2092 | { | |
2093 | struct Scsi_Host *shost = class_to_shost(class_dev); | |
2094 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
2095 | unsigned long lock_flags; | |
2096 | int result = count; | |
2097 | ||
2098 | if (!capable(CAP_SYS_ADMIN)) | |
2099 | return -EACCES; | |
2100 | ||
2101 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2102 | if (!ioa_cfg->in_reset_reload) | |
2103 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); | |
2104 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2105 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); | |
2106 | ||
2107 | return result; | |
2108 | } | |
2109 | ||
2110 | static struct class_device_attribute ipr_ioa_reset_attr = { | |
2111 | .attr = { | |
2112 | .name = "reset_host", | |
2113 | .mode = S_IWUSR, | |
2114 | }, | |
2115 | .store = ipr_store_reset_adapter | |
2116 | }; | |
2117 | ||
2118 | /** | |
2119 | * ipr_alloc_ucode_buffer - Allocates a microcode download buffer | |
2120 | * @buf_len: buffer length | |
2121 | * | |
2122 | * Allocates a DMA'able buffer in chunks and assembles a scatter/gather | |
2123 | * list to use for microcode download | |
2124 | * | |
2125 | * Return value: | |
2126 | * pointer to sglist / NULL on failure | |
2127 | **/ | |
2128 | static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) | |
2129 | { | |
2130 | int sg_size, order, bsize_elem, num_elem, i, j; | |
2131 | struct ipr_sglist *sglist; | |
2132 | struct scatterlist *scatterlist; | |
2133 | struct page *page; | |
2134 | ||
2135 | /* Get the minimum size per scatter/gather element */ | |
2136 | sg_size = buf_len / (IPR_MAX_SGLIST - 1); | |
2137 | ||
2138 | /* Get the actual size per element */ | |
2139 | order = get_order(sg_size); | |
2140 | ||
2141 | /* Determine the actual number of bytes per element */ | |
2142 | bsize_elem = PAGE_SIZE * (1 << order); | |
2143 | ||
2144 | /* Determine the actual number of sg entries needed */ | |
2145 | if (buf_len % bsize_elem) | |
2146 | num_elem = (buf_len / bsize_elem) + 1; | |
2147 | else | |
2148 | num_elem = buf_len / bsize_elem; | |
2149 | ||
2150 | /* Allocate a scatter/gather list for the DMA */ | |
2151 | sglist = kmalloc(sizeof(struct ipr_sglist) + | |
2152 | (sizeof(struct scatterlist) * (num_elem - 1)), | |
2153 | GFP_KERNEL); | |
2154 | ||
2155 | if (sglist == NULL) { | |
2156 | ipr_trace; | |
2157 | return NULL; | |
2158 | } | |
2159 | ||
2160 | memset(sglist, 0, sizeof(struct ipr_sglist) + | |
2161 | (sizeof(struct scatterlist) * (num_elem - 1))); | |
2162 | ||
2163 | scatterlist = sglist->scatterlist; | |
2164 | ||
2165 | sglist->order = order; | |
2166 | sglist->num_sg = num_elem; | |
2167 | ||
2168 | /* Allocate a bunch of sg elements */ | |
2169 | for (i = 0; i < num_elem; i++) { | |
2170 | page = alloc_pages(GFP_KERNEL, order); | |
2171 | if (!page) { | |
2172 | ipr_trace; | |
2173 | ||
2174 | /* Free up what we already allocated */ | |
2175 | for (j = i - 1; j >= 0; j--) | |
2176 | __free_pages(scatterlist[j].page, order); | |
2177 | kfree(sglist); | |
2178 | return NULL; | |
2179 | } | |
2180 | ||
2181 | scatterlist[i].page = page; | |
2182 | } | |
2183 | ||
2184 | return sglist; | |
2185 | } | |
2186 | ||
2187 | /** | |
2188 | * ipr_free_ucode_buffer - Frees a microcode download buffer | |
2189 | * @p_dnld: scatter/gather list pointer | |
2190 | * | |
2191 | * Free a DMA'able ucode download buffer previously allocated with | |
2192 | * ipr_alloc_ucode_buffer | |
2193 | * | |
2194 | * Return value: | |
2195 | * nothing | |
2196 | **/ | |
2197 | static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) | |
2198 | { | |
2199 | int i; | |
2200 | ||
2201 | for (i = 0; i < sglist->num_sg; i++) | |
2202 | __free_pages(sglist->scatterlist[i].page, sglist->order); | |
2203 | ||
2204 | kfree(sglist); | |
2205 | } | |
2206 | ||
2207 | /** | |
2208 | * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer | |
2209 | * @sglist: scatter/gather list pointer | |
2210 | * @buffer: buffer pointer | |
2211 | * @len: buffer length | |
2212 | * | |
2213 | * Copy a microcode image from a user buffer into a buffer allocated by | |
2214 | * ipr_alloc_ucode_buffer | |
2215 | * | |
2216 | * Return value: | |
2217 | * 0 on success / other on failure | |
2218 | **/ | |
2219 | static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, | |
2220 | u8 *buffer, u32 len) | |
2221 | { | |
2222 | int bsize_elem, i, result = 0; | |
2223 | struct scatterlist *scatterlist; | |
2224 | void *kaddr; | |
2225 | ||
2226 | /* Determine the actual number of bytes per element */ | |
2227 | bsize_elem = PAGE_SIZE * (1 << sglist->order); | |
2228 | ||
2229 | scatterlist = sglist->scatterlist; | |
2230 | ||
2231 | for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { | |
2232 | kaddr = kmap(scatterlist[i].page); | |
2233 | memcpy(kaddr, buffer, bsize_elem); | |
2234 | kunmap(scatterlist[i].page); | |
2235 | ||
2236 | scatterlist[i].length = bsize_elem; | |
2237 | ||
2238 | if (result != 0) { | |
2239 | ipr_trace; | |
2240 | return result; | |
2241 | } | |
2242 | } | |
2243 | ||
2244 | if (len % bsize_elem) { | |
2245 | kaddr = kmap(scatterlist[i].page); | |
2246 | memcpy(kaddr, buffer, len % bsize_elem); | |
2247 | kunmap(scatterlist[i].page); | |
2248 | ||
2249 | scatterlist[i].length = len % bsize_elem; | |
2250 | } | |
2251 | ||
2252 | sglist->buffer_len = len; | |
2253 | return result; | |
2254 | } | |
2255 | ||
2256 | /** | |
2257 | * ipr_map_ucode_buffer - Map a microcode download buffer | |
2258 | * @ipr_cmd: ipr command struct | |
2259 | * @sglist: scatter/gather list | |
2260 | * @len: total length of download buffer | |
2261 | * | |
2262 | * Maps a microcode download scatter/gather list for DMA and | |
2263 | * builds the IOADL. | |
2264 | * | |
2265 | * Return value: | |
2266 | * 0 on success / -EIO on failure | |
2267 | **/ | |
2268 | static int ipr_map_ucode_buffer(struct ipr_cmnd *ipr_cmd, | |
2269 | struct ipr_sglist *sglist, int len) | |
2270 | { | |
2271 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
2272 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; | |
2273 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; | |
2274 | struct scatterlist *scatterlist = sglist->scatterlist; | |
2275 | int i; | |
2276 | ||
2277 | ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, scatterlist, | |
2278 | sglist->num_sg, DMA_TO_DEVICE); | |
2279 | ||
2280 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; | |
2281 | ioarcb->write_data_transfer_length = cpu_to_be32(len); | |
2282 | ioarcb->write_ioadl_len = | |
2283 | cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); | |
2284 | ||
2285 | for (i = 0; i < ipr_cmd->dma_use_sg; i++) { | |
2286 | ioadl[i].flags_and_data_len = | |
2287 | cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); | |
2288 | ioadl[i].address = | |
2289 | cpu_to_be32(sg_dma_address(&scatterlist[i])); | |
2290 | } | |
2291 | ||
2292 | if (likely(ipr_cmd->dma_use_sg)) { | |
2293 | ioadl[i-1].flags_and_data_len |= | |
2294 | cpu_to_be32(IPR_IOADL_FLAGS_LAST); | |
2295 | } | |
2296 | else { | |
2297 | dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); | |
2298 | return -EIO; | |
2299 | } | |
2300 | ||
2301 | return 0; | |
2302 | } | |
2303 | ||
2304 | /** | |
2305 | * ipr_store_update_fw - Update the firmware on the adapter | |
2306 | * @class_dev: class_device struct | |
2307 | * @buf: buffer | |
2308 | * @count: buffer size | |
2309 | * | |
2310 | * This function will update the firmware on the adapter. | |
2311 | * | |
2312 | * Return value: | |
2313 | * count on success / other on failure | |
2314 | **/ | |
2315 | static ssize_t ipr_store_update_fw(struct class_device *class_dev, | |
2316 | const char *buf, size_t count) | |
2317 | { | |
2318 | struct Scsi_Host *shost = class_to_shost(class_dev); | |
2319 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
2320 | struct ipr_ucode_image_header *image_hdr; | |
2321 | const struct firmware *fw_entry; | |
2322 | struct ipr_sglist *sglist; | |
2323 | unsigned long lock_flags; | |
2324 | char fname[100]; | |
2325 | char *src; | |
2326 | int len, result, dnld_size; | |
2327 | ||
2328 | if (!capable(CAP_SYS_ADMIN)) | |
2329 | return -EACCES; | |
2330 | ||
2331 | len = snprintf(fname, 99, "%s", buf); | |
2332 | fname[len-1] = '\0'; | |
2333 | ||
2334 | if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { | |
2335 | dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); | |
2336 | return -EIO; | |
2337 | } | |
2338 | ||
2339 | image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; | |
2340 | ||
2341 | if (be32_to_cpu(image_hdr->header_length) > fw_entry->size || | |
2342 | (ioa_cfg->vpd_cbs->page3_data.card_type && | |
2343 | ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) { | |
2344 | dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n"); | |
2345 | release_firmware(fw_entry); | |
2346 | return -EINVAL; | |
2347 | } | |
2348 | ||
2349 | src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); | |
2350 | dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); | |
2351 | sglist = ipr_alloc_ucode_buffer(dnld_size); | |
2352 | ||
2353 | if (!sglist) { | |
2354 | dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); | |
2355 | release_firmware(fw_entry); | |
2356 | return -ENOMEM; | |
2357 | } | |
2358 | ||
2359 | result = ipr_copy_ucode_buffer(sglist, src, dnld_size); | |
2360 | ||
2361 | if (result) { | |
2362 | dev_err(&ioa_cfg->pdev->dev, | |
2363 | "Microcode buffer copy to DMA buffer failed\n"); | |
2364 | ipr_free_ucode_buffer(sglist); | |
2365 | release_firmware(fw_entry); | |
2366 | return result; | |
2367 | } | |
2368 | ||
2369 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2370 | ||
2371 | if (ioa_cfg->ucode_sglist) { | |
2372 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2373 | dev_err(&ioa_cfg->pdev->dev, | |
2374 | "Microcode download already in progress\n"); | |
2375 | ipr_free_ucode_buffer(sglist); | |
2376 | release_firmware(fw_entry); | |
2377 | return -EIO; | |
2378 | } | |
2379 | ||
2380 | ioa_cfg->ucode_sglist = sglist; | |
2381 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); | |
2382 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2383 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); | |
2384 | ||
2385 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2386 | ioa_cfg->ucode_sglist = NULL; | |
2387 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2388 | ||
2389 | ipr_free_ucode_buffer(sglist); | |
2390 | release_firmware(fw_entry); | |
2391 | ||
2392 | return count; | |
2393 | } | |
2394 | ||
2395 | static struct class_device_attribute ipr_update_fw_attr = { | |
2396 | .attr = { | |
2397 | .name = "update_fw", | |
2398 | .mode = S_IWUSR, | |
2399 | }, | |
2400 | .store = ipr_store_update_fw | |
2401 | }; | |
2402 | ||
2403 | static struct class_device_attribute *ipr_ioa_attrs[] = { | |
2404 | &ipr_fw_version_attr, | |
2405 | &ipr_log_level_attr, | |
2406 | &ipr_diagnostics_attr, | |
2407 | &ipr_ioa_reset_attr, | |
2408 | &ipr_update_fw_attr, | |
2409 | NULL, | |
2410 | }; | |
2411 | ||
2412 | #ifdef CONFIG_SCSI_IPR_DUMP | |
2413 | /** | |
2414 | * ipr_read_dump - Dump the adapter | |
2415 | * @kobj: kobject struct | |
2416 | * @buf: buffer | |
2417 | * @off: offset | |
2418 | * @count: buffer size | |
2419 | * | |
2420 | * Return value: | |
2421 | * number of bytes printed to buffer | |
2422 | **/ | |
2423 | static ssize_t ipr_read_dump(struct kobject *kobj, char *buf, | |
2424 | loff_t off, size_t count) | |
2425 | { | |
2426 | struct class_device *cdev = container_of(kobj,struct class_device,kobj); | |
2427 | struct Scsi_Host *shost = class_to_shost(cdev); | |
2428 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
2429 | struct ipr_dump *dump; | |
2430 | unsigned long lock_flags = 0; | |
2431 | char *src; | |
2432 | int len; | |
2433 | size_t rc = count; | |
2434 | ||
2435 | if (!capable(CAP_SYS_ADMIN)) | |
2436 | return -EACCES; | |
2437 | ||
2438 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2439 | dump = ioa_cfg->dump; | |
2440 | ||
2441 | if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { | |
2442 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2443 | return 0; | |
2444 | } | |
2445 | kref_get(&dump->kref); | |
2446 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2447 | ||
2448 | if (off > dump->driver_dump.hdr.len) { | |
2449 | kref_put(&dump->kref, ipr_release_dump); | |
2450 | return 0; | |
2451 | } | |
2452 | ||
2453 | if (off + count > dump->driver_dump.hdr.len) { | |
2454 | count = dump->driver_dump.hdr.len - off; | |
2455 | rc = count; | |
2456 | } | |
2457 | ||
2458 | if (count && off < sizeof(dump->driver_dump)) { | |
2459 | if (off + count > sizeof(dump->driver_dump)) | |
2460 | len = sizeof(dump->driver_dump) - off; | |
2461 | else | |
2462 | len = count; | |
2463 | src = (u8 *)&dump->driver_dump + off; | |
2464 | memcpy(buf, src, len); | |
2465 | buf += len; | |
2466 | off += len; | |
2467 | count -= len; | |
2468 | } | |
2469 | ||
2470 | off -= sizeof(dump->driver_dump); | |
2471 | ||
2472 | if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) { | |
2473 | if (off + count > offsetof(struct ipr_ioa_dump, ioa_data)) | |
2474 | len = offsetof(struct ipr_ioa_dump, ioa_data) - off; | |
2475 | else | |
2476 | len = count; | |
2477 | src = (u8 *)&dump->ioa_dump + off; | |
2478 | memcpy(buf, src, len); | |
2479 | buf += len; | |
2480 | off += len; | |
2481 | count -= len; | |
2482 | } | |
2483 | ||
2484 | off -= offsetof(struct ipr_ioa_dump, ioa_data); | |
2485 | ||
2486 | while (count) { | |
2487 | if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) | |
2488 | len = PAGE_ALIGN(off) - off; | |
2489 | else | |
2490 | len = count; | |
2491 | src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; | |
2492 | src += off & ~PAGE_MASK; | |
2493 | memcpy(buf, src, len); | |
2494 | buf += len; | |
2495 | off += len; | |
2496 | count -= len; | |
2497 | } | |
2498 | ||
2499 | kref_put(&dump->kref, ipr_release_dump); | |
2500 | return rc; | |
2501 | } | |
2502 | ||
2503 | /** | |
2504 | * ipr_alloc_dump - Prepare for adapter dump | |
2505 | * @ioa_cfg: ioa config struct | |
2506 | * | |
2507 | * Return value: | |
2508 | * 0 on success / other on failure | |
2509 | **/ | |
2510 | static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) | |
2511 | { | |
2512 | struct ipr_dump *dump; | |
2513 | unsigned long lock_flags = 0; | |
2514 | ||
2515 | ENTER; | |
2516 | dump = kmalloc(sizeof(struct ipr_dump), GFP_KERNEL); | |
2517 | ||
2518 | if (!dump) { | |
2519 | ipr_err("Dump memory allocation failed\n"); | |
2520 | return -ENOMEM; | |
2521 | } | |
2522 | ||
2523 | memset(dump, 0, sizeof(struct ipr_dump)); | |
2524 | kref_init(&dump->kref); | |
2525 | dump->ioa_cfg = ioa_cfg; | |
2526 | ||
2527 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2528 | ||
2529 | if (INACTIVE != ioa_cfg->sdt_state) { | |
2530 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2531 | kfree(dump); | |
2532 | return 0; | |
2533 | } | |
2534 | ||
2535 | ioa_cfg->dump = dump; | |
2536 | ioa_cfg->sdt_state = WAIT_FOR_DUMP; | |
2537 | if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) { | |
2538 | ioa_cfg->dump_taken = 1; | |
2539 | schedule_work(&ioa_cfg->work_q); | |
2540 | } | |
2541 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2542 | ||
2543 | LEAVE; | |
2544 | return 0; | |
2545 | } | |
2546 | ||
2547 | /** | |
2548 | * ipr_free_dump - Free adapter dump memory | |
2549 | * @ioa_cfg: ioa config struct | |
2550 | * | |
2551 | * Return value: | |
2552 | * 0 on success / other on failure | |
2553 | **/ | |
2554 | static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) | |
2555 | { | |
2556 | struct ipr_dump *dump; | |
2557 | unsigned long lock_flags = 0; | |
2558 | ||
2559 | ENTER; | |
2560 | ||
2561 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2562 | dump = ioa_cfg->dump; | |
2563 | if (!dump) { | |
2564 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2565 | return 0; | |
2566 | } | |
2567 | ||
2568 | ioa_cfg->dump = NULL; | |
2569 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2570 | ||
2571 | kref_put(&dump->kref, ipr_release_dump); | |
2572 | ||
2573 | LEAVE; | |
2574 | return 0; | |
2575 | } | |
2576 | ||
2577 | /** | |
2578 | * ipr_write_dump - Setup dump state of adapter | |
2579 | * @kobj: kobject struct | |
2580 | * @buf: buffer | |
2581 | * @off: offset | |
2582 | * @count: buffer size | |
2583 | * | |
2584 | * Return value: | |
2585 | * number of bytes printed to buffer | |
2586 | **/ | |
2587 | static ssize_t ipr_write_dump(struct kobject *kobj, char *buf, | |
2588 | loff_t off, size_t count) | |
2589 | { | |
2590 | struct class_device *cdev = container_of(kobj,struct class_device,kobj); | |
2591 | struct Scsi_Host *shost = class_to_shost(cdev); | |
2592 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; | |
2593 | int rc; | |
2594 | ||
2595 | if (!capable(CAP_SYS_ADMIN)) | |
2596 | return -EACCES; | |
2597 | ||
2598 | if (buf[0] == '1') | |
2599 | rc = ipr_alloc_dump(ioa_cfg); | |
2600 | else if (buf[0] == '0') | |
2601 | rc = ipr_free_dump(ioa_cfg); | |
2602 | else | |
2603 | return -EINVAL; | |
2604 | ||
2605 | if (rc) | |
2606 | return rc; | |
2607 | else | |
2608 | return count; | |
2609 | } | |
2610 | ||
2611 | static struct bin_attribute ipr_dump_attr = { | |
2612 | .attr = { | |
2613 | .name = "dump", | |
2614 | .mode = S_IRUSR | S_IWUSR, | |
2615 | }, | |
2616 | .size = 0, | |
2617 | .read = ipr_read_dump, | |
2618 | .write = ipr_write_dump | |
2619 | }; | |
2620 | #else | |
2621 | static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; | |
2622 | #endif | |
2623 | ||
2624 | /** | |
2625 | * ipr_change_queue_depth - Change the device's queue depth | |
2626 | * @sdev: scsi device struct | |
2627 | * @qdepth: depth to set | |
2628 | * | |
2629 | * Return value: | |
2630 | * actual depth set | |
2631 | **/ | |
2632 | static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) | |
2633 | { | |
2634 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); | |
2635 | return sdev->queue_depth; | |
2636 | } | |
2637 | ||
2638 | /** | |
2639 | * ipr_change_queue_type - Change the device's queue type | |
2640 | * @dsev: scsi device struct | |
2641 | * @tag_type: type of tags to use | |
2642 | * | |
2643 | * Return value: | |
2644 | * actual queue type set | |
2645 | **/ | |
2646 | static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type) | |
2647 | { | |
2648 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; | |
2649 | struct ipr_resource_entry *res; | |
2650 | unsigned long lock_flags = 0; | |
2651 | ||
2652 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2653 | res = (struct ipr_resource_entry *)sdev->hostdata; | |
2654 | ||
2655 | if (res) { | |
2656 | if (ipr_is_gscsi(res) && sdev->tagged_supported) { | |
2657 | /* | |
2658 | * We don't bother quiescing the device here since the | |
2659 | * adapter firmware does it for us. | |
2660 | */ | |
2661 | scsi_set_tag_type(sdev, tag_type); | |
2662 | ||
2663 | if (tag_type) | |
2664 | scsi_activate_tcq(sdev, sdev->queue_depth); | |
2665 | else | |
2666 | scsi_deactivate_tcq(sdev, sdev->queue_depth); | |
2667 | } else | |
2668 | tag_type = 0; | |
2669 | } else | |
2670 | tag_type = 0; | |
2671 | ||
2672 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2673 | return tag_type; | |
2674 | } | |
2675 | ||
2676 | /** | |
2677 | * ipr_show_adapter_handle - Show the adapter's resource handle for this device | |
2678 | * @dev: device struct | |
2679 | * @buf: buffer | |
2680 | * | |
2681 | * Return value: | |
2682 | * number of bytes printed to buffer | |
2683 | **/ | |
10523b3b | 2684 | static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
2685 | { |
2686 | struct scsi_device *sdev = to_scsi_device(dev); | |
2687 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; | |
2688 | struct ipr_resource_entry *res; | |
2689 | unsigned long lock_flags = 0; | |
2690 | ssize_t len = -ENXIO; | |
2691 | ||
2692 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2693 | res = (struct ipr_resource_entry *)sdev->hostdata; | |
2694 | if (res) | |
2695 | len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle); | |
2696 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2697 | return len; | |
2698 | } | |
2699 | ||
2700 | static struct device_attribute ipr_adapter_handle_attr = { | |
2701 | .attr = { | |
2702 | .name = "adapter_handle", | |
2703 | .mode = S_IRUSR, | |
2704 | }, | |
2705 | .show = ipr_show_adapter_handle | |
2706 | }; | |
2707 | ||
2708 | static struct device_attribute *ipr_dev_attrs[] = { | |
2709 | &ipr_adapter_handle_attr, | |
2710 | NULL, | |
2711 | }; | |
2712 | ||
2713 | /** | |
2714 | * ipr_biosparam - Return the HSC mapping | |
2715 | * @sdev: scsi device struct | |
2716 | * @block_device: block device pointer | |
2717 | * @capacity: capacity of the device | |
2718 | * @parm: Array containing returned HSC values. | |
2719 | * | |
2720 | * This function generates the HSC parms that fdisk uses. | |
2721 | * We want to make sure we return something that places partitions | |
2722 | * on 4k boundaries for best performance with the IOA. | |
2723 | * | |
2724 | * Return value: | |
2725 | * 0 on success | |
2726 | **/ | |
2727 | static int ipr_biosparam(struct scsi_device *sdev, | |
2728 | struct block_device *block_device, | |
2729 | sector_t capacity, int *parm) | |
2730 | { | |
2731 | int heads, sectors; | |
2732 | sector_t cylinders; | |
2733 | ||
2734 | heads = 128; | |
2735 | sectors = 32; | |
2736 | ||
2737 | cylinders = capacity; | |
2738 | sector_div(cylinders, (128 * 32)); | |
2739 | ||
2740 | /* return result */ | |
2741 | parm[0] = heads; | |
2742 | parm[1] = sectors; | |
2743 | parm[2] = cylinders; | |
2744 | ||
2745 | return 0; | |
2746 | } | |
2747 | ||
2748 | /** | |
2749 | * ipr_slave_destroy - Unconfigure a SCSI device | |
2750 | * @sdev: scsi device struct | |
2751 | * | |
2752 | * Return value: | |
2753 | * nothing | |
2754 | **/ | |
2755 | static void ipr_slave_destroy(struct scsi_device *sdev) | |
2756 | { | |
2757 | struct ipr_resource_entry *res; | |
2758 | struct ipr_ioa_cfg *ioa_cfg; | |
2759 | unsigned long lock_flags = 0; | |
2760 | ||
2761 | ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; | |
2762 | ||
2763 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2764 | res = (struct ipr_resource_entry *) sdev->hostdata; | |
2765 | if (res) { | |
2766 | sdev->hostdata = NULL; | |
2767 | res->sdev = NULL; | |
2768 | } | |
2769 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2770 | } | |
2771 | ||
2772 | /** | |
2773 | * ipr_slave_configure - Configure a SCSI device | |
2774 | * @sdev: scsi device struct | |
2775 | * | |
2776 | * This function configures the specified scsi device. | |
2777 | * | |
2778 | * Return value: | |
2779 | * 0 on success | |
2780 | **/ | |
2781 | static int ipr_slave_configure(struct scsi_device *sdev) | |
2782 | { | |
2783 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; | |
2784 | struct ipr_resource_entry *res; | |
2785 | unsigned long lock_flags = 0; | |
2786 | ||
2787 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2788 | res = sdev->hostdata; | |
2789 | if (res) { | |
2790 | if (ipr_is_af_dasd_device(res)) | |
2791 | sdev->type = TYPE_RAID; | |
2792 | if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) | |
2793 | sdev->scsi_level = 4; | |
2794 | if (ipr_is_vset_device(res)) { | |
2795 | sdev->timeout = IPR_VSET_RW_TIMEOUT; | |
2796 | blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); | |
2797 | } | |
2798 | if (IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data)) | |
2799 | sdev->allow_restart = 1; | |
2800 | scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); | |
2801 | } | |
2802 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2803 | return 0; | |
2804 | } | |
2805 | ||
2806 | /** | |
2807 | * ipr_slave_alloc - Prepare for commands to a device. | |
2808 | * @sdev: scsi device struct | |
2809 | * | |
2810 | * This function saves a pointer to the resource entry | |
2811 | * in the scsi device struct if the device exists. We | |
2812 | * can then use this pointer in ipr_queuecommand when | |
2813 | * handling new commands. | |
2814 | * | |
2815 | * Return value: | |
2816 | * 0 on success | |
2817 | **/ | |
2818 | static int ipr_slave_alloc(struct scsi_device *sdev) | |
2819 | { | |
2820 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; | |
2821 | struct ipr_resource_entry *res; | |
2822 | unsigned long lock_flags; | |
2823 | ||
2824 | sdev->hostdata = NULL; | |
2825 | ||
2826 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
2827 | ||
2828 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { | |
2829 | if ((res->cfgte.res_addr.bus == sdev->channel) && | |
2830 | (res->cfgte.res_addr.target == sdev->id) && | |
2831 | (res->cfgte.res_addr.lun == sdev->lun)) { | |
2832 | res->sdev = sdev; | |
2833 | res->add_to_ml = 0; | |
2834 | res->in_erp = 0; | |
2835 | sdev->hostdata = res; | |
2836 | res->needs_sync_complete = 1; | |
2837 | break; | |
2838 | } | |
2839 | } | |
2840 | ||
2841 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
2842 | ||
2843 | return 0; | |
2844 | } | |
2845 | ||
2846 | /** | |
2847 | * ipr_eh_host_reset - Reset the host adapter | |
2848 | * @scsi_cmd: scsi command struct | |
2849 | * | |
2850 | * Return value: | |
2851 | * SUCCESS / FAILED | |
2852 | **/ | |
df0ae249 | 2853 | static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd) |
1da177e4 LT |
2854 | { |
2855 | struct ipr_ioa_cfg *ioa_cfg; | |
2856 | int rc; | |
2857 | ||
2858 | ENTER; | |
2859 | ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; | |
2860 | ||
2861 | dev_err(&ioa_cfg->pdev->dev, | |
2862 | "Adapter being reset as a result of error recovery.\n"); | |
2863 | ||
2864 | if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) | |
2865 | ioa_cfg->sdt_state = GET_DUMP; | |
2866 | ||
2867 | rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV); | |
2868 | ||
2869 | LEAVE; | |
2870 | return rc; | |
2871 | } | |
2872 | ||
df0ae249 JG |
2873 | static int ipr_eh_host_reset(struct scsi_cmnd * cmd) |
2874 | { | |
2875 | int rc; | |
2876 | ||
2877 | spin_lock_irq(cmd->device->host->host_lock); | |
2878 | rc = __ipr_eh_host_reset(cmd); | |
2879 | spin_unlock_irq(cmd->device->host->host_lock); | |
2880 | ||
2881 | return rc; | |
2882 | } | |
2883 | ||
1da177e4 LT |
2884 | /** |
2885 | * ipr_eh_dev_reset - Reset the device | |
2886 | * @scsi_cmd: scsi command struct | |
2887 | * | |
2888 | * This function issues a device reset to the affected device. | |
2889 | * A LUN reset will be sent to the device first. If that does | |
2890 | * not work, a target reset will be sent. | |
2891 | * | |
2892 | * Return value: | |
2893 | * SUCCESS / FAILED | |
2894 | **/ | |
94d0e7b8 | 2895 | static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) |
1da177e4 LT |
2896 | { |
2897 | struct ipr_cmnd *ipr_cmd; | |
2898 | struct ipr_ioa_cfg *ioa_cfg; | |
2899 | struct ipr_resource_entry *res; | |
2900 | struct ipr_cmd_pkt *cmd_pkt; | |
2901 | u32 ioasc; | |
2902 | ||
2903 | ENTER; | |
2904 | ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; | |
2905 | res = scsi_cmd->device->hostdata; | |
2906 | ||
2907 | if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res))) | |
2908 | return FAILED; | |
2909 | ||
2910 | /* | |
2911 | * If we are currently going through reset/reload, return failed. This will force the | |
2912 | * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the | |
2913 | * reset to complete | |
2914 | */ | |
2915 | if (ioa_cfg->in_reset_reload) | |
2916 | return FAILED; | |
2917 | if (ioa_cfg->ioa_is_dead) | |
2918 | return FAILED; | |
2919 | ||
2920 | list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { | |
2921 | if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) { | |
2922 | if (ipr_cmd->scsi_cmd) | |
2923 | ipr_cmd->done = ipr_scsi_eh_done; | |
2924 | } | |
2925 | } | |
2926 | ||
2927 | res->resetting_device = 1; | |
2928 | ||
2929 | ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); | |
2930 | ||
2931 | ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; | |
2932 | cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; | |
2933 | cmd_pkt->request_type = IPR_RQTYPE_IOACMD; | |
2934 | cmd_pkt->cdb[0] = IPR_RESET_DEVICE; | |
2935 | ||
2936 | ipr_sdev_err(scsi_cmd->device, "Resetting device\n"); | |
2937 | ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); | |
2938 | ||
2939 | ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
2940 | ||
2941 | res->resetting_device = 0; | |
2942 | ||
2943 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
2944 | ||
2945 | LEAVE; | |
2946 | return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); | |
2947 | } | |
2948 | ||
94d0e7b8 JG |
2949 | static int ipr_eh_dev_reset(struct scsi_cmnd * cmd) |
2950 | { | |
2951 | int rc; | |
2952 | ||
2953 | spin_lock_irq(cmd->device->host->host_lock); | |
2954 | rc = __ipr_eh_dev_reset(cmd); | |
2955 | spin_unlock_irq(cmd->device->host->host_lock); | |
2956 | ||
2957 | return rc; | |
2958 | } | |
2959 | ||
1da177e4 LT |
2960 | /** |
2961 | * ipr_bus_reset_done - Op done function for bus reset. | |
2962 | * @ipr_cmd: ipr command struct | |
2963 | * | |
2964 | * This function is the op done function for a bus reset | |
2965 | * | |
2966 | * Return value: | |
2967 | * none | |
2968 | **/ | |
2969 | static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) | |
2970 | { | |
2971 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
2972 | struct ipr_resource_entry *res; | |
2973 | ||
2974 | ENTER; | |
2975 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { | |
2976 | if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle, | |
2977 | sizeof(res->cfgte.res_handle))) { | |
2978 | scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus); | |
2979 | break; | |
2980 | } | |
2981 | } | |
2982 | ||
2983 | /* | |
2984 | * If abort has not completed, indicate the reset has, else call the | |
2985 | * abort's done function to wake the sleeping eh thread | |
2986 | */ | |
2987 | if (ipr_cmd->sibling->sibling) | |
2988 | ipr_cmd->sibling->sibling = NULL; | |
2989 | else | |
2990 | ipr_cmd->sibling->done(ipr_cmd->sibling); | |
2991 | ||
2992 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
2993 | LEAVE; | |
2994 | } | |
2995 | ||
2996 | /** | |
2997 | * ipr_abort_timeout - An abort task has timed out | |
2998 | * @ipr_cmd: ipr command struct | |
2999 | * | |
3000 | * This function handles when an abort task times out. If this | |
3001 | * happens we issue a bus reset since we have resources tied | |
3002 | * up that must be freed before returning to the midlayer. | |
3003 | * | |
3004 | * Return value: | |
3005 | * none | |
3006 | **/ | |
3007 | static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) | |
3008 | { | |
3009 | struct ipr_cmnd *reset_cmd; | |
3010 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
3011 | struct ipr_cmd_pkt *cmd_pkt; | |
3012 | unsigned long lock_flags = 0; | |
3013 | ||
3014 | ENTER; | |
3015 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
3016 | if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { | |
3017 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
3018 | return; | |
3019 | } | |
3020 | ||
3021 | ipr_sdev_err(ipr_cmd->u.sdev, "Abort timed out. Resetting bus\n"); | |
3022 | reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); | |
3023 | ipr_cmd->sibling = reset_cmd; | |
3024 | reset_cmd->sibling = ipr_cmd; | |
3025 | reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; | |
3026 | cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; | |
3027 | cmd_pkt->request_type = IPR_RQTYPE_IOACMD; | |
3028 | cmd_pkt->cdb[0] = IPR_RESET_DEVICE; | |
3029 | cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; | |
3030 | ||
3031 | ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); | |
3032 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
3033 | LEAVE; | |
3034 | } | |
3035 | ||
3036 | /** | |
3037 | * ipr_cancel_op - Cancel specified op | |
3038 | * @scsi_cmd: scsi command struct | |
3039 | * | |
3040 | * This function cancels specified op. | |
3041 | * | |
3042 | * Return value: | |
3043 | * SUCCESS / FAILED | |
3044 | **/ | |
3045 | static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) | |
3046 | { | |
3047 | struct ipr_cmnd *ipr_cmd; | |
3048 | struct ipr_ioa_cfg *ioa_cfg; | |
3049 | struct ipr_resource_entry *res; | |
3050 | struct ipr_cmd_pkt *cmd_pkt; | |
3051 | u32 ioasc; | |
3052 | int op_found = 0; | |
3053 | ||
3054 | ENTER; | |
3055 | ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; | |
3056 | res = scsi_cmd->device->hostdata; | |
3057 | ||
8fa728a2 JG |
3058 | /* If we are currently going through reset/reload, return failed. |
3059 | * This will force the mid-layer to call ipr_eh_host_reset, | |
3060 | * which will then go to sleep and wait for the reset to complete | |
3061 | */ | |
3062 | if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) | |
3063 | return FAILED; | |
1da177e4 LT |
3064 | if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res))) |
3065 | return FAILED; | |
3066 | ||
3067 | list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { | |
3068 | if (ipr_cmd->scsi_cmd == scsi_cmd) { | |
3069 | ipr_cmd->done = ipr_scsi_eh_done; | |
3070 | op_found = 1; | |
3071 | break; | |
3072 | } | |
3073 | } | |
3074 | ||
3075 | if (!op_found) | |
3076 | return SUCCESS; | |
3077 | ||
3078 | ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); | |
3079 | ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; | |
3080 | cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; | |
3081 | cmd_pkt->request_type = IPR_RQTYPE_IOACMD; | |
3082 | cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; | |
3083 | ipr_cmd->u.sdev = scsi_cmd->device; | |
3084 | ||
3085 | ipr_sdev_err(scsi_cmd->device, "Aborting command: %02X\n", scsi_cmd->cmnd[0]); | |
3086 | ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); | |
3087 | ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
3088 | ||
3089 | /* | |
3090 | * If the abort task timed out and we sent a bus reset, we will get | |
3091 | * one the following responses to the abort | |
3092 | */ | |
3093 | if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { | |
3094 | ioasc = 0; | |
3095 | ipr_trace; | |
3096 | } | |
3097 | ||
3098 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
3099 | res->needs_sync_complete = 1; | |
3100 | ||
3101 | LEAVE; | |
3102 | return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); | |
3103 | } | |
3104 | ||
3105 | /** | |
3106 | * ipr_eh_abort - Abort a single op | |
3107 | * @scsi_cmd: scsi command struct | |
3108 | * | |
3109 | * Return value: | |
3110 | * SUCCESS / FAILED | |
3111 | **/ | |
3112 | static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) | |
3113 | { | |
8fa728a2 JG |
3114 | unsigned long flags; |
3115 | int rc; | |
1da177e4 LT |
3116 | |
3117 | ENTER; | |
1da177e4 | 3118 | |
8fa728a2 JG |
3119 | spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); |
3120 | rc = ipr_cancel_op(scsi_cmd); | |
3121 | spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); | |
1da177e4 LT |
3122 | |
3123 | LEAVE; | |
8fa728a2 | 3124 | return rc; |
1da177e4 LT |
3125 | } |
3126 | ||
3127 | /** | |
3128 | * ipr_handle_other_interrupt - Handle "other" interrupts | |
3129 | * @ioa_cfg: ioa config struct | |
3130 | * @int_reg: interrupt register | |
3131 | * | |
3132 | * Return value: | |
3133 | * IRQ_NONE / IRQ_HANDLED | |
3134 | **/ | |
3135 | static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, | |
3136 | volatile u32 int_reg) | |
3137 | { | |
3138 | irqreturn_t rc = IRQ_HANDLED; | |
3139 | ||
3140 | if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { | |
3141 | /* Mask the interrupt */ | |
3142 | writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); | |
3143 | ||
3144 | /* Clear the interrupt */ | |
3145 | writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); | |
3146 | int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); | |
3147 | ||
3148 | list_del(&ioa_cfg->reset_cmd->queue); | |
3149 | del_timer(&ioa_cfg->reset_cmd->timer); | |
3150 | ipr_reset_ioa_job(ioa_cfg->reset_cmd); | |
3151 | } else { | |
3152 | if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) | |
3153 | ioa_cfg->ioa_unit_checked = 1; | |
3154 | else | |
3155 | dev_err(&ioa_cfg->pdev->dev, | |
3156 | "Permanent IOA failure. 0x%08X\n", int_reg); | |
3157 | ||
3158 | if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) | |
3159 | ioa_cfg->sdt_state = GET_DUMP; | |
3160 | ||
3161 | ipr_mask_and_clear_interrupts(ioa_cfg, ~0); | |
3162 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); | |
3163 | } | |
3164 | ||
3165 | return rc; | |
3166 | } | |
3167 | ||
3168 | /** | |
3169 | * ipr_isr - Interrupt service routine | |
3170 | * @irq: irq number | |
3171 | * @devp: pointer to ioa config struct | |
3172 | * @regs: pt_regs struct | |
3173 | * | |
3174 | * Return value: | |
3175 | * IRQ_NONE / IRQ_HANDLED | |
3176 | **/ | |
3177 | static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs) | |
3178 | { | |
3179 | struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; | |
3180 | unsigned long lock_flags = 0; | |
3181 | volatile u32 int_reg, int_mask_reg; | |
3182 | u32 ioasc; | |
3183 | u16 cmd_index; | |
3184 | struct ipr_cmnd *ipr_cmd; | |
3185 | irqreturn_t rc = IRQ_NONE; | |
3186 | ||
3187 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
3188 | ||
3189 | /* If interrupts are disabled, ignore the interrupt */ | |
3190 | if (!ioa_cfg->allow_interrupts) { | |
3191 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
3192 | return IRQ_NONE; | |
3193 | } | |
3194 | ||
3195 | int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); | |
3196 | int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; | |
3197 | ||
3198 | /* If an interrupt on the adapter did not occur, ignore it */ | |
3199 | if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) { | |
3200 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
3201 | return IRQ_NONE; | |
3202 | } | |
3203 | ||
3204 | while (1) { | |
3205 | ipr_cmd = NULL; | |
3206 | ||
3207 | while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == | |
3208 | ioa_cfg->toggle_bit) { | |
3209 | ||
3210 | cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & | |
3211 | IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; | |
3212 | ||
3213 | if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { | |
3214 | ioa_cfg->errors_logged++; | |
3215 | dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n"); | |
3216 | ||
3217 | if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) | |
3218 | ioa_cfg->sdt_state = GET_DUMP; | |
3219 | ||
3220 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); | |
3221 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
3222 | return IRQ_HANDLED; | |
3223 | } | |
3224 | ||
3225 | ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; | |
3226 | ||
3227 | ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
3228 | ||
3229 | ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); | |
3230 | ||
3231 | list_del(&ipr_cmd->queue); | |
3232 | del_timer(&ipr_cmd->timer); | |
3233 | ipr_cmd->done(ipr_cmd); | |
3234 | ||
3235 | rc = IRQ_HANDLED; | |
3236 | ||
3237 | if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { | |
3238 | ioa_cfg->hrrq_curr++; | |
3239 | } else { | |
3240 | ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; | |
3241 | ioa_cfg->toggle_bit ^= 1u; | |
3242 | } | |
3243 | } | |
3244 | ||
3245 | if (ipr_cmd != NULL) { | |
3246 | /* Clear the PCI interrupt */ | |
3247 | writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg); | |
3248 | int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; | |
3249 | } else | |
3250 | break; | |
3251 | } | |
3252 | ||
3253 | if (unlikely(rc == IRQ_NONE)) | |
3254 | rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); | |
3255 | ||
3256 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
3257 | return rc; | |
3258 | } | |
3259 | ||
3260 | /** | |
3261 | * ipr_build_ioadl - Build a scatter/gather list and map the buffer | |
3262 | * @ioa_cfg: ioa config struct | |
3263 | * @ipr_cmd: ipr command struct | |
3264 | * | |
3265 | * Return value: | |
3266 | * 0 on success / -1 on failure | |
3267 | **/ | |
3268 | static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, | |
3269 | struct ipr_cmnd *ipr_cmd) | |
3270 | { | |
3271 | int i; | |
3272 | struct scatterlist *sglist; | |
3273 | u32 length; | |
3274 | u32 ioadl_flags = 0; | |
3275 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; | |
3276 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; | |
3277 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; | |
3278 | ||
3279 | length = scsi_cmd->request_bufflen; | |
3280 | ||
3281 | if (length == 0) | |
3282 | return 0; | |
3283 | ||
3284 | if (scsi_cmd->use_sg) { | |
3285 | ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, | |
3286 | scsi_cmd->request_buffer, | |
3287 | scsi_cmd->use_sg, | |
3288 | scsi_cmd->sc_data_direction); | |
3289 | ||
3290 | if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { | |
3291 | ioadl_flags = IPR_IOADL_FLAGS_WRITE; | |
3292 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; | |
3293 | ioarcb->write_data_transfer_length = cpu_to_be32(length); | |
3294 | ioarcb->write_ioadl_len = | |
3295 | cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); | |
3296 | } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { | |
3297 | ioadl_flags = IPR_IOADL_FLAGS_READ; | |
3298 | ioarcb->read_data_transfer_length = cpu_to_be32(length); | |
3299 | ioarcb->read_ioadl_len = | |
3300 | cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); | |
3301 | } | |
3302 | ||
3303 | sglist = scsi_cmd->request_buffer; | |
3304 | ||
3305 | for (i = 0; i < ipr_cmd->dma_use_sg; i++) { | |
3306 | ioadl[i].flags_and_data_len = | |
3307 | cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i])); | |
3308 | ioadl[i].address = | |
3309 | cpu_to_be32(sg_dma_address(&sglist[i])); | |
3310 | } | |
3311 | ||
3312 | if (likely(ipr_cmd->dma_use_sg)) { | |
3313 | ioadl[i-1].flags_and_data_len |= | |
3314 | cpu_to_be32(IPR_IOADL_FLAGS_LAST); | |
3315 | return 0; | |
3316 | } else | |
3317 | dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); | |
3318 | } else { | |
3319 | if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { | |
3320 | ioadl_flags = IPR_IOADL_FLAGS_WRITE; | |
3321 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; | |
3322 | ioarcb->write_data_transfer_length = cpu_to_be32(length); | |
3323 | ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); | |
3324 | } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { | |
3325 | ioadl_flags = IPR_IOADL_FLAGS_READ; | |
3326 | ioarcb->read_data_transfer_length = cpu_to_be32(length); | |
3327 | ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); | |
3328 | } | |
3329 | ||
3330 | ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev, | |
3331 | scsi_cmd->request_buffer, length, | |
3332 | scsi_cmd->sc_data_direction); | |
3333 | ||
3334 | if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) { | |
3335 | ipr_cmd->dma_use_sg = 1; | |
3336 | ioadl[0].flags_and_data_len = | |
3337 | cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST); | |
3338 | ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle); | |
3339 | return 0; | |
3340 | } else | |
3341 | dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n"); | |
3342 | } | |
3343 | ||
3344 | return -1; | |
3345 | } | |
3346 | ||
3347 | /** | |
3348 | * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes | |
3349 | * @scsi_cmd: scsi command struct | |
3350 | * | |
3351 | * Return value: | |
3352 | * task attributes | |
3353 | **/ | |
3354 | static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) | |
3355 | { | |
3356 | u8 tag[2]; | |
3357 | u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; | |
3358 | ||
3359 | if (scsi_populate_tag_msg(scsi_cmd, tag)) { | |
3360 | switch (tag[0]) { | |
3361 | case MSG_SIMPLE_TAG: | |
3362 | rc = IPR_FLAGS_LO_SIMPLE_TASK; | |
3363 | break; | |
3364 | case MSG_HEAD_TAG: | |
3365 | rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; | |
3366 | break; | |
3367 | case MSG_ORDERED_TAG: | |
3368 | rc = IPR_FLAGS_LO_ORDERED_TASK; | |
3369 | break; | |
3370 | }; | |
3371 | } | |
3372 | ||
3373 | return rc; | |
3374 | } | |
3375 | ||
3376 | /** | |
3377 | * ipr_erp_done - Process completion of ERP for a device | |
3378 | * @ipr_cmd: ipr command struct | |
3379 | * | |
3380 | * This function copies the sense buffer into the scsi_cmd | |
3381 | * struct and pushes the scsi_done function. | |
3382 | * | |
3383 | * Return value: | |
3384 | * nothing | |
3385 | **/ | |
3386 | static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) | |
3387 | { | |
3388 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; | |
3389 | struct ipr_resource_entry *res = scsi_cmd->device->hostdata; | |
3390 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
3391 | u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
3392 | ||
3393 | if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { | |
3394 | scsi_cmd->result |= (DID_ERROR << 16); | |
3395 | ipr_sdev_err(scsi_cmd->device, | |
3396 | "Request Sense failed with IOASC: 0x%08X\n", ioasc); | |
3397 | } else { | |
3398 | memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, | |
3399 | SCSI_SENSE_BUFFERSIZE); | |
3400 | } | |
3401 | ||
3402 | if (res) { | |
3403 | res->needs_sync_complete = 1; | |
3404 | res->in_erp = 0; | |
3405 | } | |
3406 | ipr_unmap_sglist(ioa_cfg, ipr_cmd); | |
3407 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
3408 | scsi_cmd->scsi_done(scsi_cmd); | |
3409 | } | |
3410 | ||
3411 | /** | |
3412 | * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP | |
3413 | * @ipr_cmd: ipr command struct | |
3414 | * | |
3415 | * Return value: | |
3416 | * none | |
3417 | **/ | |
3418 | static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) | |
3419 | { | |
3420 | struct ipr_ioarcb *ioarcb; | |
3421 | struct ipr_ioasa *ioasa; | |
3422 | ||
3423 | ioarcb = &ipr_cmd->ioarcb; | |
3424 | ioasa = &ipr_cmd->ioasa; | |
3425 | ||
3426 | memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); | |
3427 | ioarcb->write_data_transfer_length = 0; | |
3428 | ioarcb->read_data_transfer_length = 0; | |
3429 | ioarcb->write_ioadl_len = 0; | |
3430 | ioarcb->read_ioadl_len = 0; | |
3431 | ioasa->ioasc = 0; | |
3432 | ioasa->residual_data_len = 0; | |
3433 | } | |
3434 | ||
3435 | /** | |
3436 | * ipr_erp_request_sense - Send request sense to a device | |
3437 | * @ipr_cmd: ipr command struct | |
3438 | * | |
3439 | * This function sends a request sense to a device as a result | |
3440 | * of a check condition. | |
3441 | * | |
3442 | * Return value: | |
3443 | * nothing | |
3444 | **/ | |
3445 | static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) | |
3446 | { | |
3447 | struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; | |
3448 | u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
3449 | ||
3450 | if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { | |
3451 | ipr_erp_done(ipr_cmd); | |
3452 | return; | |
3453 | } | |
3454 | ||
3455 | ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); | |
3456 | ||
3457 | cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; | |
3458 | cmd_pkt->cdb[0] = REQUEST_SENSE; | |
3459 | cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; | |
3460 | cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; | |
3461 | cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; | |
3462 | cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); | |
3463 | ||
3464 | ipr_cmd->ioadl[0].flags_and_data_len = | |
3465 | cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE); | |
3466 | ipr_cmd->ioadl[0].address = | |
3467 | cpu_to_be32(ipr_cmd->sense_buffer_dma); | |
3468 | ||
3469 | ipr_cmd->ioarcb.read_ioadl_len = | |
3470 | cpu_to_be32(sizeof(struct ipr_ioadl_desc)); | |
3471 | ipr_cmd->ioarcb.read_data_transfer_length = | |
3472 | cpu_to_be32(SCSI_SENSE_BUFFERSIZE); | |
3473 | ||
3474 | ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, | |
3475 | IPR_REQUEST_SENSE_TIMEOUT * 2); | |
3476 | } | |
3477 | ||
3478 | /** | |
3479 | * ipr_erp_cancel_all - Send cancel all to a device | |
3480 | * @ipr_cmd: ipr command struct | |
3481 | * | |
3482 | * This function sends a cancel all to a device to clear the | |
3483 | * queue. If we are running TCQ on the device, QERR is set to 1, | |
3484 | * which means all outstanding ops have been dropped on the floor. | |
3485 | * Cancel all will return them to us. | |
3486 | * | |
3487 | * Return value: | |
3488 | * nothing | |
3489 | **/ | |
3490 | static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) | |
3491 | { | |
3492 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; | |
3493 | struct ipr_resource_entry *res = scsi_cmd->device->hostdata; | |
3494 | struct ipr_cmd_pkt *cmd_pkt; | |
3495 | ||
3496 | res->in_erp = 1; | |
3497 | ||
3498 | ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); | |
3499 | ||
3500 | if (!scsi_get_tag_type(scsi_cmd->device)) { | |
3501 | ipr_erp_request_sense(ipr_cmd); | |
3502 | return; | |
3503 | } | |
3504 | ||
3505 | cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; | |
3506 | cmd_pkt->request_type = IPR_RQTYPE_IOACMD; | |
3507 | cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; | |
3508 | ||
3509 | ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, | |
3510 | IPR_CANCEL_ALL_TIMEOUT); | |
3511 | } | |
3512 | ||
3513 | /** | |
3514 | * ipr_dump_ioasa - Dump contents of IOASA | |
3515 | * @ioa_cfg: ioa config struct | |
3516 | * @ipr_cmd: ipr command struct | |
3517 | * | |
3518 | * This function is invoked by the interrupt handler when ops | |
3519 | * fail. It will log the IOASA if appropriate. Only called | |
3520 | * for GPDD ops. | |
3521 | * | |
3522 | * Return value: | |
3523 | * none | |
3524 | **/ | |
3525 | static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, | |
3526 | struct ipr_cmnd *ipr_cmd) | |
3527 | { | |
3528 | int i; | |
3529 | u16 data_len; | |
3530 | u32 ioasc; | |
3531 | struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; | |
3532 | __be32 *ioasa_data = (__be32 *)ioasa; | |
3533 | int error_index; | |
3534 | ||
3535 | ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK; | |
3536 | ||
3537 | if (0 == ioasc) | |
3538 | return; | |
3539 | ||
3540 | if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) | |
3541 | return; | |
3542 | ||
3543 | error_index = ipr_get_error(ioasc); | |
3544 | ||
3545 | if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { | |
3546 | /* Don't log an error if the IOA already logged one */ | |
3547 | if (ioasa->ilid != 0) | |
3548 | return; | |
3549 | ||
3550 | if (ipr_error_table[error_index].log_ioasa == 0) | |
3551 | return; | |
3552 | } | |
3553 | ||
3554 | ipr_sdev_err(ipr_cmd->scsi_cmd->device, "%s\n", | |
3555 | ipr_error_table[error_index].error); | |
3556 | ||
3557 | if ((ioasa->u.gpdd.end_state <= ARRAY_SIZE(ipr_gpdd_dev_end_states)) && | |
3558 | (ioasa->u.gpdd.bus_phase <= ARRAY_SIZE(ipr_gpdd_dev_bus_phases))) { | |
3559 | ipr_sdev_err(ipr_cmd->scsi_cmd->device, | |
3560 | "Device End state: %s Phase: %s\n", | |
3561 | ipr_gpdd_dev_end_states[ioasa->u.gpdd.end_state], | |
3562 | ipr_gpdd_dev_bus_phases[ioasa->u.gpdd.bus_phase]); | |
3563 | } | |
3564 | ||
3565 | if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len)) | |
3566 | data_len = sizeof(struct ipr_ioasa); | |
3567 | else | |
3568 | data_len = be16_to_cpu(ioasa->ret_stat_len); | |
3569 | ||
3570 | ipr_err("IOASA Dump:\n"); | |
3571 | ||
3572 | for (i = 0; i < data_len / 4; i += 4) { | |
3573 | ipr_err("%08X: %08X %08X %08X %08X\n", i*4, | |
3574 | be32_to_cpu(ioasa_data[i]), | |
3575 | be32_to_cpu(ioasa_data[i+1]), | |
3576 | be32_to_cpu(ioasa_data[i+2]), | |
3577 | be32_to_cpu(ioasa_data[i+3])); | |
3578 | } | |
3579 | } | |
3580 | ||
3581 | /** | |
3582 | * ipr_gen_sense - Generate SCSI sense data from an IOASA | |
3583 | * @ioasa: IOASA | |
3584 | * @sense_buf: sense data buffer | |
3585 | * | |
3586 | * Return value: | |
3587 | * none | |
3588 | **/ | |
3589 | static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) | |
3590 | { | |
3591 | u32 failing_lba; | |
3592 | u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; | |
3593 | struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; | |
3594 | struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; | |
3595 | u32 ioasc = be32_to_cpu(ioasa->ioasc); | |
3596 | ||
3597 | memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); | |
3598 | ||
3599 | if (ioasc >= IPR_FIRST_DRIVER_IOASC) | |
3600 | return; | |
3601 | ||
3602 | ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; | |
3603 | ||
3604 | if (ipr_is_vset_device(res) && | |
3605 | ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && | |
3606 | ioasa->u.vset.failing_lba_hi != 0) { | |
3607 | sense_buf[0] = 0x72; | |
3608 | sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); | |
3609 | sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); | |
3610 | sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); | |
3611 | ||
3612 | sense_buf[7] = 12; | |
3613 | sense_buf[8] = 0; | |
3614 | sense_buf[9] = 0x0A; | |
3615 | sense_buf[10] = 0x80; | |
3616 | ||
3617 | failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); | |
3618 | ||
3619 | sense_buf[12] = (failing_lba & 0xff000000) >> 24; | |
3620 | sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; | |
3621 | sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; | |
3622 | sense_buf[15] = failing_lba & 0x000000ff; | |
3623 | ||
3624 | failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); | |
3625 | ||
3626 | sense_buf[16] = (failing_lba & 0xff000000) >> 24; | |
3627 | sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; | |
3628 | sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; | |
3629 | sense_buf[19] = failing_lba & 0x000000ff; | |
3630 | } else { | |
3631 | sense_buf[0] = 0x70; | |
3632 | sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); | |
3633 | sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); | |
3634 | sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); | |
3635 | ||
3636 | /* Illegal request */ | |
3637 | if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && | |
3638 | (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) { | |
3639 | sense_buf[7] = 10; /* additional length */ | |
3640 | ||
3641 | /* IOARCB was in error */ | |
3642 | if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) | |
3643 | sense_buf[15] = 0xC0; | |
3644 | else /* Parameter data was invalid */ | |
3645 | sense_buf[15] = 0x80; | |
3646 | ||
3647 | sense_buf[16] = | |
3648 | ((IPR_FIELD_POINTER_MASK & | |
3649 | be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff; | |
3650 | sense_buf[17] = | |
3651 | (IPR_FIELD_POINTER_MASK & | |
3652 | be32_to_cpu(ioasa->ioasc_specific)) & 0xff; | |
3653 | } else { | |
3654 | if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { | |
3655 | if (ipr_is_vset_device(res)) | |
3656 | failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); | |
3657 | else | |
3658 | failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); | |
3659 | ||
3660 | sense_buf[0] |= 0x80; /* Or in the Valid bit */ | |
3661 | sense_buf[3] = (failing_lba & 0xff000000) >> 24; | |
3662 | sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; | |
3663 | sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; | |
3664 | sense_buf[6] = failing_lba & 0x000000ff; | |
3665 | } | |
3666 | ||
3667 | sense_buf[7] = 6; /* additional length */ | |
3668 | } | |
3669 | } | |
3670 | } | |
3671 | ||
3672 | /** | |
3673 | * ipr_erp_start - Process an error response for a SCSI op | |
3674 | * @ioa_cfg: ioa config struct | |
3675 | * @ipr_cmd: ipr command struct | |
3676 | * | |
3677 | * This function determines whether or not to initiate ERP | |
3678 | * on the affected device. | |
3679 | * | |
3680 | * Return value: | |
3681 | * nothing | |
3682 | **/ | |
3683 | static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, | |
3684 | struct ipr_cmnd *ipr_cmd) | |
3685 | { | |
3686 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; | |
3687 | struct ipr_resource_entry *res = scsi_cmd->device->hostdata; | |
3688 | u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
3689 | ||
3690 | if (!res) { | |
3691 | ipr_scsi_eh_done(ipr_cmd); | |
3692 | return; | |
3693 | } | |
3694 | ||
3695 | if (ipr_is_gscsi(res)) | |
3696 | ipr_dump_ioasa(ioa_cfg, ipr_cmd); | |
3697 | else | |
3698 | ipr_gen_sense(ipr_cmd); | |
3699 | ||
3700 | switch (ioasc & IPR_IOASC_IOASC_MASK) { | |
3701 | case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: | |
3702 | scsi_cmd->result |= (DID_IMM_RETRY << 16); | |
3703 | break; | |
3704 | case IPR_IOASC_IR_RESOURCE_HANDLE: | |
3705 | scsi_cmd->result |= (DID_NO_CONNECT << 16); | |
3706 | break; | |
3707 | case IPR_IOASC_HW_SEL_TIMEOUT: | |
3708 | scsi_cmd->result |= (DID_NO_CONNECT << 16); | |
3709 | res->needs_sync_complete = 1; | |
3710 | break; | |
3711 | case IPR_IOASC_SYNC_REQUIRED: | |
3712 | if (!res->in_erp) | |
3713 | res->needs_sync_complete = 1; | |
3714 | scsi_cmd->result |= (DID_IMM_RETRY << 16); | |
3715 | break; | |
3716 | case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ | |
3717 | scsi_cmd->result |= (DID_PASSTHROUGH << 16); | |
3718 | break; | |
3719 | case IPR_IOASC_BUS_WAS_RESET: | |
3720 | case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: | |
3721 | /* | |
3722 | * Report the bus reset and ask for a retry. The device | |
3723 | * will give CC/UA the next command. | |
3724 | */ | |
3725 | if (!res->resetting_device) | |
3726 | scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); | |
3727 | scsi_cmd->result |= (DID_ERROR << 16); | |
3728 | res->needs_sync_complete = 1; | |
3729 | break; | |
3730 | case IPR_IOASC_HW_DEV_BUS_STATUS: | |
3731 | scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); | |
3732 | if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { | |
3733 | ipr_erp_cancel_all(ipr_cmd); | |
3734 | return; | |
3735 | } | |
3736 | res->needs_sync_complete = 1; | |
3737 | break; | |
3738 | case IPR_IOASC_NR_INIT_CMD_REQUIRED: | |
3739 | break; | |
3740 | default: | |
3741 | scsi_cmd->result |= (DID_ERROR << 16); | |
3742 | if (!ipr_is_vset_device(res)) | |
3743 | res->needs_sync_complete = 1; | |
3744 | break; | |
3745 | } | |
3746 | ||
3747 | ipr_unmap_sglist(ioa_cfg, ipr_cmd); | |
3748 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
3749 | scsi_cmd->scsi_done(scsi_cmd); | |
3750 | } | |
3751 | ||
3752 | /** | |
3753 | * ipr_scsi_done - mid-layer done function | |
3754 | * @ipr_cmd: ipr command struct | |
3755 | * | |
3756 | * This function is invoked by the interrupt handler for | |
3757 | * ops generated by the SCSI mid-layer | |
3758 | * | |
3759 | * Return value: | |
3760 | * none | |
3761 | **/ | |
3762 | static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) | |
3763 | { | |
3764 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
3765 | struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; | |
3766 | u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
3767 | ||
3768 | scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len); | |
3769 | ||
3770 | if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { | |
3771 | ipr_unmap_sglist(ioa_cfg, ipr_cmd); | |
3772 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
3773 | scsi_cmd->scsi_done(scsi_cmd); | |
3774 | } else | |
3775 | ipr_erp_start(ioa_cfg, ipr_cmd); | |
3776 | } | |
3777 | ||
3778 | /** | |
3779 | * ipr_save_ioafp_mode_select - Save adapters mode select data | |
3780 | * @ioa_cfg: ioa config struct | |
3781 | * @scsi_cmd: scsi command struct | |
3782 | * | |
3783 | * This function saves mode select data for the adapter to | |
3784 | * use following an adapter reset. | |
3785 | * | |
3786 | * Return value: | |
3787 | * 0 on success / SCSI_MLQUEUE_HOST_BUSY on failure | |
3788 | **/ | |
3789 | static int ipr_save_ioafp_mode_select(struct ipr_ioa_cfg *ioa_cfg, | |
3790 | struct scsi_cmnd *scsi_cmd) | |
3791 | { | |
3792 | if (!ioa_cfg->saved_mode_pages) { | |
3793 | ioa_cfg->saved_mode_pages = kmalloc(sizeof(struct ipr_mode_pages), | |
3794 | GFP_ATOMIC); | |
3795 | if (!ioa_cfg->saved_mode_pages) { | |
3796 | dev_err(&ioa_cfg->pdev->dev, | |
3797 | "IOA mode select buffer allocation failed\n"); | |
3798 | return SCSI_MLQUEUE_HOST_BUSY; | |
3799 | } | |
3800 | } | |
3801 | ||
3802 | memcpy(ioa_cfg->saved_mode_pages, scsi_cmd->buffer, scsi_cmd->cmnd[4]); | |
3803 | ioa_cfg->saved_mode_page_len = scsi_cmd->cmnd[4]; | |
3804 | return 0; | |
3805 | } | |
3806 | ||
3807 | /** | |
3808 | * ipr_queuecommand - Queue a mid-layer request | |
3809 | * @scsi_cmd: scsi command struct | |
3810 | * @done: done function | |
3811 | * | |
3812 | * This function queues a request generated by the mid-layer. | |
3813 | * | |
3814 | * Return value: | |
3815 | * 0 on success | |
3816 | * SCSI_MLQUEUE_DEVICE_BUSY if device is busy | |
3817 | * SCSI_MLQUEUE_HOST_BUSY if host is busy | |
3818 | **/ | |
3819 | static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, | |
3820 | void (*done) (struct scsi_cmnd *)) | |
3821 | { | |
3822 | struct ipr_ioa_cfg *ioa_cfg; | |
3823 | struct ipr_resource_entry *res; | |
3824 | struct ipr_ioarcb *ioarcb; | |
3825 | struct ipr_cmnd *ipr_cmd; | |
3826 | int rc = 0; | |
3827 | ||
3828 | scsi_cmd->scsi_done = done; | |
3829 | ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; | |
3830 | res = scsi_cmd->device->hostdata; | |
3831 | scsi_cmd->result = (DID_OK << 16); | |
3832 | ||
3833 | /* | |
3834 | * We are currently blocking all devices due to a host reset | |
3835 | * We have told the host to stop giving us new requests, but | |
3836 | * ERP ops don't count. FIXME | |
3837 | */ | |
3838 | if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) | |
3839 | return SCSI_MLQUEUE_HOST_BUSY; | |
3840 | ||
3841 | /* | |
3842 | * FIXME - Create scsi_set_host_offline interface | |
3843 | * and the ioa_is_dead check can be removed | |
3844 | */ | |
3845 | if (unlikely(ioa_cfg->ioa_is_dead || !res)) { | |
3846 | memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); | |
3847 | scsi_cmd->result = (DID_NO_CONNECT << 16); | |
3848 | scsi_cmd->scsi_done(scsi_cmd); | |
3849 | return 0; | |
3850 | } | |
3851 | ||
3852 | ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); | |
3853 | ioarcb = &ipr_cmd->ioarcb; | |
3854 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); | |
3855 | ||
3856 | memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); | |
3857 | ipr_cmd->scsi_cmd = scsi_cmd; | |
3858 | ioarcb->res_handle = res->cfgte.res_handle; | |
3859 | ipr_cmd->done = ipr_scsi_done; | |
3860 | ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); | |
3861 | ||
3862 | if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { | |
3863 | if (scsi_cmd->underflow == 0) | |
3864 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; | |
3865 | ||
3866 | if (res->needs_sync_complete) { | |
3867 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; | |
3868 | res->needs_sync_complete = 0; | |
3869 | } | |
3870 | ||
3871 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; | |
3872 | ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; | |
3873 | ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; | |
3874 | ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); | |
3875 | } | |
3876 | ||
3877 | if (scsi_cmd->cmnd[0] >= 0xC0 && | |
3878 | (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) | |
3879 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; | |
3880 | ||
3881 | if (ipr_is_ioa_resource(res) && scsi_cmd->cmnd[0] == MODE_SELECT) | |
3882 | rc = ipr_save_ioafp_mode_select(ioa_cfg, scsi_cmd); | |
3883 | ||
3884 | if (likely(rc == 0)) | |
3885 | rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); | |
3886 | ||
3887 | if (likely(rc == 0)) { | |
3888 | mb(); | |
3889 | writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), | |
3890 | ioa_cfg->regs.ioarrin_reg); | |
3891 | } else { | |
3892 | list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
3893 | return SCSI_MLQUEUE_HOST_BUSY; | |
3894 | } | |
3895 | ||
3896 | return 0; | |
3897 | } | |
3898 | ||
3899 | /** | |
3900 | * ipr_info - Get information about the card/driver | |
3901 | * @scsi_host: scsi host struct | |
3902 | * | |
3903 | * Return value: | |
3904 | * pointer to buffer with description string | |
3905 | **/ | |
3906 | static const char * ipr_ioa_info(struct Scsi_Host *host) | |
3907 | { | |
3908 | static char buffer[512]; | |
3909 | struct ipr_ioa_cfg *ioa_cfg; | |
3910 | unsigned long lock_flags = 0; | |
3911 | ||
3912 | ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; | |
3913 | ||
3914 | spin_lock_irqsave(host->host_lock, lock_flags); | |
3915 | sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); | |
3916 | spin_unlock_irqrestore(host->host_lock, lock_flags); | |
3917 | ||
3918 | return buffer; | |
3919 | } | |
3920 | ||
3921 | static struct scsi_host_template driver_template = { | |
3922 | .module = THIS_MODULE, | |
3923 | .name = "IPR", | |
3924 | .info = ipr_ioa_info, | |
3925 | .queuecommand = ipr_queuecommand, | |
3926 | .eh_abort_handler = ipr_eh_abort, | |
3927 | .eh_device_reset_handler = ipr_eh_dev_reset, | |
3928 | .eh_host_reset_handler = ipr_eh_host_reset, | |
3929 | .slave_alloc = ipr_slave_alloc, | |
3930 | .slave_configure = ipr_slave_configure, | |
3931 | .slave_destroy = ipr_slave_destroy, | |
3932 | .change_queue_depth = ipr_change_queue_depth, | |
3933 | .change_queue_type = ipr_change_queue_type, | |
3934 | .bios_param = ipr_biosparam, | |
3935 | .can_queue = IPR_MAX_COMMANDS, | |
3936 | .this_id = -1, | |
3937 | .sg_tablesize = IPR_MAX_SGLIST, | |
3938 | .max_sectors = IPR_IOA_MAX_SECTORS, | |
3939 | .cmd_per_lun = IPR_MAX_CMD_PER_LUN, | |
3940 | .use_clustering = ENABLE_CLUSTERING, | |
3941 | .shost_attrs = ipr_ioa_attrs, | |
3942 | .sdev_attrs = ipr_dev_attrs, | |
3943 | .proc_name = IPR_NAME | |
3944 | }; | |
3945 | ||
3946 | #ifdef CONFIG_PPC_PSERIES | |
3947 | static const u16 ipr_blocked_processors[] = { | |
3948 | PV_NORTHSTAR, | |
3949 | PV_PULSAR, | |
3950 | PV_POWER4, | |
3951 | PV_ICESTAR, | |
3952 | PV_SSTAR, | |
3953 | PV_POWER4p, | |
3954 | PV_630, | |
3955 | PV_630p | |
3956 | }; | |
3957 | ||
3958 | /** | |
3959 | * ipr_invalid_adapter - Determine if this adapter is supported on this hardware | |
3960 | * @ioa_cfg: ioa cfg struct | |
3961 | * | |
3962 | * Adapters that use Gemstone revision < 3.1 do not work reliably on | |
3963 | * certain pSeries hardware. This function determines if the given | |
3964 | * adapter is in one of these confgurations or not. | |
3965 | * | |
3966 | * Return value: | |
3967 | * 1 if adapter is not supported / 0 if adapter is supported | |
3968 | **/ | |
3969 | static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) | |
3970 | { | |
3971 | u8 rev_id; | |
3972 | int i; | |
3973 | ||
3974 | if (ioa_cfg->type == 0x5702) { | |
3975 | if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID, | |
3976 | &rev_id) == PCIBIOS_SUCCESSFUL) { | |
3977 | if (rev_id < 4) { | |
3978 | for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ | |
3979 | if (__is_processor(ipr_blocked_processors[i])) | |
3980 | return 1; | |
3981 | } | |
3982 | } | |
3983 | } | |
3984 | } | |
3985 | return 0; | |
3986 | } | |
3987 | #else | |
3988 | #define ipr_invalid_adapter(ioa_cfg) 0 | |
3989 | #endif | |
3990 | ||
3991 | /** | |
3992 | * ipr_ioa_bringdown_done - IOA bring down completion. | |
3993 | * @ipr_cmd: ipr command struct | |
3994 | * | |
3995 | * This function processes the completion of an adapter bring down. | |
3996 | * It wakes any reset sleepers. | |
3997 | * | |
3998 | * Return value: | |
3999 | * IPR_RC_JOB_RETURN | |
4000 | **/ | |
4001 | static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) | |
4002 | { | |
4003 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4004 | ||
4005 | ENTER; | |
4006 | ioa_cfg->in_reset_reload = 0; | |
4007 | ioa_cfg->reset_retries = 0; | |
4008 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
4009 | wake_up_all(&ioa_cfg->reset_wait_q); | |
4010 | ||
4011 | spin_unlock_irq(ioa_cfg->host->host_lock); | |
4012 | scsi_unblock_requests(ioa_cfg->host); | |
4013 | spin_lock_irq(ioa_cfg->host->host_lock); | |
4014 | LEAVE; | |
4015 | ||
4016 | return IPR_RC_JOB_RETURN; | |
4017 | } | |
4018 | ||
4019 | /** | |
4020 | * ipr_ioa_reset_done - IOA reset completion. | |
4021 | * @ipr_cmd: ipr command struct | |
4022 | * | |
4023 | * This function processes the completion of an adapter reset. | |
4024 | * It schedules any necessary mid-layer add/removes and | |
4025 | * wakes any reset sleepers. | |
4026 | * | |
4027 | * Return value: | |
4028 | * IPR_RC_JOB_RETURN | |
4029 | **/ | |
4030 | static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) | |
4031 | { | |
4032 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4033 | struct ipr_resource_entry *res; | |
4034 | struct ipr_hostrcb *hostrcb, *temp; | |
4035 | int i = 0; | |
4036 | ||
4037 | ENTER; | |
4038 | ioa_cfg->in_reset_reload = 0; | |
4039 | ioa_cfg->allow_cmds = 1; | |
4040 | ioa_cfg->reset_cmd = NULL; | |
4041 | ||
4042 | list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { | |
4043 | if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { | |
4044 | ipr_trace; | |
4045 | break; | |
4046 | } | |
4047 | } | |
4048 | schedule_work(&ioa_cfg->work_q); | |
4049 | ||
4050 | list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { | |
4051 | list_del(&hostrcb->queue); | |
4052 | if (i++ < IPR_NUM_LOG_HCAMS) | |
4053 | ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); | |
4054 | else | |
4055 | ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); | |
4056 | } | |
4057 | ||
4058 | dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); | |
4059 | ||
4060 | ioa_cfg->reset_retries = 0; | |
4061 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
4062 | wake_up_all(&ioa_cfg->reset_wait_q); | |
4063 | ||
4064 | spin_unlock_irq(ioa_cfg->host->host_lock); | |
4065 | scsi_unblock_requests(ioa_cfg->host); | |
4066 | spin_lock_irq(ioa_cfg->host->host_lock); | |
4067 | ||
4068 | if (!ioa_cfg->allow_cmds) | |
4069 | scsi_block_requests(ioa_cfg->host); | |
4070 | ||
4071 | LEAVE; | |
4072 | return IPR_RC_JOB_RETURN; | |
4073 | } | |
4074 | ||
4075 | /** | |
4076 | * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer | |
4077 | * @supported_dev: supported device struct | |
4078 | * @vpids: vendor product id struct | |
4079 | * | |
4080 | * Return value: | |
4081 | * none | |
4082 | **/ | |
4083 | static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, | |
4084 | struct ipr_std_inq_vpids *vpids) | |
4085 | { | |
4086 | memset(supported_dev, 0, sizeof(struct ipr_supported_device)); | |
4087 | memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); | |
4088 | supported_dev->num_records = 1; | |
4089 | supported_dev->data_length = | |
4090 | cpu_to_be16(sizeof(struct ipr_supported_device)); | |
4091 | supported_dev->reserved = 0; | |
4092 | } | |
4093 | ||
4094 | /** | |
4095 | * ipr_set_supported_devs - Send Set Supported Devices for a device | |
4096 | * @ipr_cmd: ipr command struct | |
4097 | * | |
4098 | * This function send a Set Supported Devices to the adapter | |
4099 | * | |
4100 | * Return value: | |
4101 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN | |
4102 | **/ | |
4103 | static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) | |
4104 | { | |
4105 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4106 | struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; | |
4107 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; | |
4108 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; | |
4109 | struct ipr_resource_entry *res = ipr_cmd->u.res; | |
4110 | ||
4111 | ipr_cmd->job_step = ipr_ioa_reset_done; | |
4112 | ||
4113 | list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { | |
d0ad6f50 | 4114 | if (!IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data)) |
1da177e4 LT |
4115 | continue; |
4116 | ||
4117 | ipr_cmd->u.res = res; | |
4118 | ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids); | |
4119 | ||
4120 | ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); | |
4121 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; | |
4122 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; | |
4123 | ||
4124 | ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; | |
4125 | ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; | |
4126 | ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; | |
4127 | ||
4128 | ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | | |
4129 | sizeof(struct ipr_supported_device)); | |
4130 | ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma + | |
4131 | offsetof(struct ipr_misc_cbs, supp_dev)); | |
4132 | ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); | |
4133 | ioarcb->write_data_transfer_length = | |
4134 | cpu_to_be32(sizeof(struct ipr_supported_device)); | |
4135 | ||
4136 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, | |
4137 | IPR_SET_SUP_DEVICE_TIMEOUT); | |
4138 | ||
4139 | ipr_cmd->job_step = ipr_set_supported_devs; | |
4140 | return IPR_RC_JOB_RETURN; | |
4141 | } | |
4142 | ||
4143 | return IPR_RC_JOB_CONTINUE; | |
4144 | } | |
4145 | ||
4146 | /** | |
4147 | * ipr_get_mode_page - Locate specified mode page | |
4148 | * @mode_pages: mode page buffer | |
4149 | * @page_code: page code to find | |
4150 | * @len: minimum required length for mode page | |
4151 | * | |
4152 | * Return value: | |
4153 | * pointer to mode page / NULL on failure | |
4154 | **/ | |
4155 | static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, | |
4156 | u32 page_code, u32 len) | |
4157 | { | |
4158 | struct ipr_mode_page_hdr *mode_hdr; | |
4159 | u32 page_length; | |
4160 | u32 length; | |
4161 | ||
4162 | if (!mode_pages || (mode_pages->hdr.length == 0)) | |
4163 | return NULL; | |
4164 | ||
4165 | length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; | |
4166 | mode_hdr = (struct ipr_mode_page_hdr *) | |
4167 | (mode_pages->data + mode_pages->hdr.block_desc_len); | |
4168 | ||
4169 | while (length) { | |
4170 | if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { | |
4171 | if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) | |
4172 | return mode_hdr; | |
4173 | break; | |
4174 | } else { | |
4175 | page_length = (sizeof(struct ipr_mode_page_hdr) + | |
4176 | mode_hdr->page_length); | |
4177 | length -= page_length; | |
4178 | mode_hdr = (struct ipr_mode_page_hdr *) | |
4179 | ((unsigned long)mode_hdr + page_length); | |
4180 | } | |
4181 | } | |
4182 | return NULL; | |
4183 | } | |
4184 | ||
4185 | /** | |
4186 | * ipr_check_term_power - Check for term power errors | |
4187 | * @ioa_cfg: ioa config struct | |
4188 | * @mode_pages: IOAFP mode pages buffer | |
4189 | * | |
4190 | * Check the IOAFP's mode page 28 for term power errors | |
4191 | * | |
4192 | * Return value: | |
4193 | * nothing | |
4194 | **/ | |
4195 | static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, | |
4196 | struct ipr_mode_pages *mode_pages) | |
4197 | { | |
4198 | int i; | |
4199 | int entry_length; | |
4200 | struct ipr_dev_bus_entry *bus; | |
4201 | struct ipr_mode_page28 *mode_page; | |
4202 | ||
4203 | mode_page = ipr_get_mode_page(mode_pages, 0x28, | |
4204 | sizeof(struct ipr_mode_page28)); | |
4205 | ||
4206 | entry_length = mode_page->entry_length; | |
4207 | ||
4208 | bus = mode_page->bus; | |
4209 | ||
4210 | for (i = 0; i < mode_page->num_entries; i++) { | |
4211 | if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { | |
4212 | dev_err(&ioa_cfg->pdev->dev, | |
4213 | "Term power is absent on scsi bus %d\n", | |
4214 | bus->res_addr.bus); | |
4215 | } | |
4216 | ||
4217 | bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); | |
4218 | } | |
4219 | } | |
4220 | ||
4221 | /** | |
4222 | * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table | |
4223 | * @ioa_cfg: ioa config struct | |
4224 | * | |
4225 | * Looks through the config table checking for SES devices. If | |
4226 | * the SES device is in the SES table indicating a maximum SCSI | |
4227 | * bus speed, the speed is limited for the bus. | |
4228 | * | |
4229 | * Return value: | |
4230 | * none | |
4231 | **/ | |
4232 | static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) | |
4233 | { | |
4234 | u32 max_xfer_rate; | |
4235 | int i; | |
4236 | ||
4237 | for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { | |
4238 | max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, | |
4239 | ioa_cfg->bus_attr[i].bus_width); | |
4240 | ||
4241 | if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) | |
4242 | ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; | |
4243 | } | |
4244 | } | |
4245 | ||
4246 | /** | |
4247 | * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 | |
4248 | * @ioa_cfg: ioa config struct | |
4249 | * @mode_pages: mode page 28 buffer | |
4250 | * | |
4251 | * Updates mode page 28 based on driver configuration | |
4252 | * | |
4253 | * Return value: | |
4254 | * none | |
4255 | **/ | |
4256 | static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, | |
4257 | struct ipr_mode_pages *mode_pages) | |
4258 | { | |
4259 | int i, entry_length; | |
4260 | struct ipr_dev_bus_entry *bus; | |
4261 | struct ipr_bus_attributes *bus_attr; | |
4262 | struct ipr_mode_page28 *mode_page; | |
4263 | ||
4264 | mode_page = ipr_get_mode_page(mode_pages, 0x28, | |
4265 | sizeof(struct ipr_mode_page28)); | |
4266 | ||
4267 | entry_length = mode_page->entry_length; | |
4268 | ||
4269 | /* Loop for each device bus entry */ | |
4270 | for (i = 0, bus = mode_page->bus; | |
4271 | i < mode_page->num_entries; | |
4272 | i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { | |
4273 | if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { | |
4274 | dev_err(&ioa_cfg->pdev->dev, | |
4275 | "Invalid resource address reported: 0x%08X\n", | |
4276 | IPR_GET_PHYS_LOC(bus->res_addr)); | |
4277 | continue; | |
4278 | } | |
4279 | ||
4280 | bus_attr = &ioa_cfg->bus_attr[i]; | |
4281 | bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; | |
4282 | bus->bus_width = bus_attr->bus_width; | |
4283 | bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); | |
4284 | bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; | |
4285 | if (bus_attr->qas_enabled) | |
4286 | bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; | |
4287 | else | |
4288 | bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; | |
4289 | } | |
4290 | } | |
4291 | ||
4292 | /** | |
4293 | * ipr_build_mode_select - Build a mode select command | |
4294 | * @ipr_cmd: ipr command struct | |
4295 | * @res_handle: resource handle to send command to | |
4296 | * @parm: Byte 2 of Mode Sense command | |
4297 | * @dma_addr: DMA buffer address | |
4298 | * @xfer_len: data transfer length | |
4299 | * | |
4300 | * Return value: | |
4301 | * none | |
4302 | **/ | |
4303 | static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, | |
4304 | __be32 res_handle, u8 parm, u32 dma_addr, | |
4305 | u8 xfer_len) | |
4306 | { | |
4307 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; | |
4308 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; | |
4309 | ||
4310 | ioarcb->res_handle = res_handle; | |
4311 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; | |
4312 | ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; | |
4313 | ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; | |
4314 | ioarcb->cmd_pkt.cdb[1] = parm; | |
4315 | ioarcb->cmd_pkt.cdb[4] = xfer_len; | |
4316 | ||
4317 | ioadl->flags_and_data_len = | |
4318 | cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len); | |
4319 | ioadl->address = cpu_to_be32(dma_addr); | |
4320 | ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); | |
4321 | ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len); | |
4322 | } | |
4323 | ||
4324 | /** | |
4325 | * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA | |
4326 | * @ipr_cmd: ipr command struct | |
4327 | * | |
4328 | * This function sets up the SCSI bus attributes and sends | |
4329 | * a Mode Select for Page 28 to activate them. | |
4330 | * | |
4331 | * Return value: | |
4332 | * IPR_RC_JOB_RETURN | |
4333 | **/ | |
4334 | static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) | |
4335 | { | |
4336 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4337 | struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; | |
4338 | int length; | |
4339 | ||
4340 | ENTER; | |
4341 | if (ioa_cfg->saved_mode_pages) { | |
4342 | memcpy(mode_pages, ioa_cfg->saved_mode_pages, | |
4343 | ioa_cfg->saved_mode_page_len); | |
4344 | length = ioa_cfg->saved_mode_page_len; | |
4345 | } else { | |
4346 | ipr_scsi_bus_speed_limit(ioa_cfg); | |
4347 | ipr_check_term_power(ioa_cfg, mode_pages); | |
4348 | ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); | |
4349 | length = mode_pages->hdr.length + 1; | |
4350 | mode_pages->hdr.length = 0; | |
4351 | } | |
4352 | ||
4353 | ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, | |
4354 | ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), | |
4355 | length); | |
4356 | ||
4357 | ipr_cmd->job_step = ipr_set_supported_devs; | |
4358 | ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, | |
4359 | struct ipr_resource_entry, queue); | |
4360 | ||
4361 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); | |
4362 | ||
4363 | LEAVE; | |
4364 | return IPR_RC_JOB_RETURN; | |
4365 | } | |
4366 | ||
4367 | /** | |
4368 | * ipr_build_mode_sense - Builds a mode sense command | |
4369 | * @ipr_cmd: ipr command struct | |
4370 | * @res: resource entry struct | |
4371 | * @parm: Byte 2 of mode sense command | |
4372 | * @dma_addr: DMA address of mode sense buffer | |
4373 | * @xfer_len: Size of DMA buffer | |
4374 | * | |
4375 | * Return value: | |
4376 | * none | |
4377 | **/ | |
4378 | static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, | |
4379 | __be32 res_handle, | |
4380 | u8 parm, u32 dma_addr, u8 xfer_len) | |
4381 | { | |
4382 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; | |
4383 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; | |
4384 | ||
4385 | ioarcb->res_handle = res_handle; | |
4386 | ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; | |
4387 | ioarcb->cmd_pkt.cdb[2] = parm; | |
4388 | ioarcb->cmd_pkt.cdb[4] = xfer_len; | |
4389 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; | |
4390 | ||
4391 | ioadl->flags_and_data_len = | |
4392 | cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); | |
4393 | ioadl->address = cpu_to_be32(dma_addr); | |
4394 | ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); | |
4395 | ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); | |
4396 | } | |
4397 | ||
4398 | /** | |
4399 | * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA | |
4400 | * @ipr_cmd: ipr command struct | |
4401 | * | |
4402 | * This function send a Page 28 mode sense to the IOA to | |
4403 | * retrieve SCSI bus attributes. | |
4404 | * | |
4405 | * Return value: | |
4406 | * IPR_RC_JOB_RETURN | |
4407 | **/ | |
4408 | static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) | |
4409 | { | |
4410 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4411 | ||
4412 | ENTER; | |
4413 | ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), | |
4414 | 0x28, ioa_cfg->vpd_cbs_dma + | |
4415 | offsetof(struct ipr_misc_cbs, mode_pages), | |
4416 | sizeof(struct ipr_mode_pages)); | |
4417 | ||
4418 | ipr_cmd->job_step = ipr_ioafp_mode_select_page28; | |
4419 | ||
4420 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); | |
4421 | ||
4422 | LEAVE; | |
4423 | return IPR_RC_JOB_RETURN; | |
4424 | } | |
4425 | ||
4426 | /** | |
4427 | * ipr_init_res_table - Initialize the resource table | |
4428 | * @ipr_cmd: ipr command struct | |
4429 | * | |
4430 | * This function looks through the existing resource table, comparing | |
4431 | * it with the config table. This function will take care of old/new | |
4432 | * devices and schedule adding/removing them from the mid-layer | |
4433 | * as appropriate. | |
4434 | * | |
4435 | * Return value: | |
4436 | * IPR_RC_JOB_CONTINUE | |
4437 | **/ | |
4438 | static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) | |
4439 | { | |
4440 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4441 | struct ipr_resource_entry *res, *temp; | |
4442 | struct ipr_config_table_entry *cfgte; | |
4443 | int found, i; | |
4444 | LIST_HEAD(old_res); | |
4445 | ||
4446 | ENTER; | |
4447 | if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ) | |
4448 | dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); | |
4449 | ||
4450 | list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) | |
4451 | list_move_tail(&res->queue, &old_res); | |
4452 | ||
4453 | for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) { | |
4454 | cfgte = &ioa_cfg->cfg_table->dev[i]; | |
4455 | found = 0; | |
4456 | ||
4457 | list_for_each_entry_safe(res, temp, &old_res, queue) { | |
4458 | if (!memcmp(&res->cfgte.res_addr, | |
4459 | &cfgte->res_addr, sizeof(cfgte->res_addr))) { | |
4460 | list_move_tail(&res->queue, &ioa_cfg->used_res_q); | |
4461 | found = 1; | |
4462 | break; | |
4463 | } | |
4464 | } | |
4465 | ||
4466 | if (!found) { | |
4467 | if (list_empty(&ioa_cfg->free_res_q)) { | |
4468 | dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); | |
4469 | break; | |
4470 | } | |
4471 | ||
4472 | found = 1; | |
4473 | res = list_entry(ioa_cfg->free_res_q.next, | |
4474 | struct ipr_resource_entry, queue); | |
4475 | list_move_tail(&res->queue, &ioa_cfg->used_res_q); | |
4476 | ipr_init_res_entry(res); | |
4477 | res->add_to_ml = 1; | |
4478 | } | |
4479 | ||
4480 | if (found) | |
4481 | memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); | |
4482 | } | |
4483 | ||
4484 | list_for_each_entry_safe(res, temp, &old_res, queue) { | |
4485 | if (res->sdev) { | |
4486 | res->del_from_ml = 1; | |
4487 | res->sdev->hostdata = NULL; | |
4488 | list_move_tail(&res->queue, &ioa_cfg->used_res_q); | |
4489 | } else { | |
4490 | list_move_tail(&res->queue, &ioa_cfg->free_res_q); | |
4491 | } | |
4492 | } | |
4493 | ||
4494 | ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; | |
4495 | ||
4496 | LEAVE; | |
4497 | return IPR_RC_JOB_CONTINUE; | |
4498 | } | |
4499 | ||
4500 | /** | |
4501 | * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. | |
4502 | * @ipr_cmd: ipr command struct | |
4503 | * | |
4504 | * This function sends a Query IOA Configuration command | |
4505 | * to the adapter to retrieve the IOA configuration table. | |
4506 | * | |
4507 | * Return value: | |
4508 | * IPR_RC_JOB_RETURN | |
4509 | **/ | |
4510 | static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) | |
4511 | { | |
4512 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4513 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; | |
4514 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; | |
4515 | struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; | |
4516 | ||
4517 | ENTER; | |
4518 | dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", | |
4519 | ucode_vpd->major_release, ucode_vpd->card_type, | |
4520 | ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); | |
4521 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; | |
4522 | ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); | |
4523 | ||
4524 | ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; | |
4525 | ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff; | |
4526 | ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff; | |
4527 | ||
4528 | ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); | |
4529 | ioarcb->read_data_transfer_length = | |
4530 | cpu_to_be32(sizeof(struct ipr_config_table)); | |
4531 | ||
4532 | ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma); | |
4533 | ioadl->flags_and_data_len = | |
4534 | cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table)); | |
4535 | ||
4536 | ipr_cmd->job_step = ipr_init_res_table; | |
4537 | ||
4538 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); | |
4539 | ||
4540 | LEAVE; | |
4541 | return IPR_RC_JOB_RETURN; | |
4542 | } | |
4543 | ||
4544 | /** | |
4545 | * ipr_ioafp_inquiry - Send an Inquiry to the adapter. | |
4546 | * @ipr_cmd: ipr command struct | |
4547 | * | |
4548 | * This utility function sends an inquiry to the adapter. | |
4549 | * | |
4550 | * Return value: | |
4551 | * none | |
4552 | **/ | |
4553 | static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, | |
4554 | u32 dma_addr, u8 xfer_len) | |
4555 | { | |
4556 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; | |
4557 | struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; | |
4558 | ||
4559 | ENTER; | |
4560 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; | |
4561 | ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); | |
4562 | ||
4563 | ioarcb->cmd_pkt.cdb[0] = INQUIRY; | |
4564 | ioarcb->cmd_pkt.cdb[1] = flags; | |
4565 | ioarcb->cmd_pkt.cdb[2] = page; | |
4566 | ioarcb->cmd_pkt.cdb[4] = xfer_len; | |
4567 | ||
4568 | ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); | |
4569 | ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); | |
4570 | ||
4571 | ioadl->address = cpu_to_be32(dma_addr); | |
4572 | ioadl->flags_and_data_len = | |
4573 | cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); | |
4574 | ||
4575 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); | |
4576 | LEAVE; | |
4577 | } | |
4578 | ||
4579 | /** | |
4580 | * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. | |
4581 | * @ipr_cmd: ipr command struct | |
4582 | * | |
4583 | * This function sends a Page 3 inquiry to the adapter | |
4584 | * to retrieve software VPD information. | |
4585 | * | |
4586 | * Return value: | |
4587 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN | |
4588 | **/ | |
4589 | static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) | |
4590 | { | |
4591 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4592 | char type[5]; | |
4593 | ||
4594 | ENTER; | |
4595 | ||
4596 | /* Grab the type out of the VPD and store it away */ | |
4597 | memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); | |
4598 | type[4] = '\0'; | |
4599 | ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); | |
4600 | ||
4601 | ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; | |
4602 | ||
4603 | ipr_ioafp_inquiry(ipr_cmd, 1, 3, | |
4604 | ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), | |
4605 | sizeof(struct ipr_inquiry_page3)); | |
4606 | ||
4607 | LEAVE; | |
4608 | return IPR_RC_JOB_RETURN; | |
4609 | } | |
4610 | ||
4611 | /** | |
4612 | * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. | |
4613 | * @ipr_cmd: ipr command struct | |
4614 | * | |
4615 | * This function sends a standard inquiry to the adapter. | |
4616 | * | |
4617 | * Return value: | |
4618 | * IPR_RC_JOB_RETURN | |
4619 | **/ | |
4620 | static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) | |
4621 | { | |
4622 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4623 | ||
4624 | ENTER; | |
4625 | ipr_cmd->job_step = ipr_ioafp_page3_inquiry; | |
4626 | ||
4627 | ipr_ioafp_inquiry(ipr_cmd, 0, 0, | |
4628 | ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), | |
4629 | sizeof(struct ipr_ioa_vpd)); | |
4630 | ||
4631 | LEAVE; | |
4632 | return IPR_RC_JOB_RETURN; | |
4633 | } | |
4634 | ||
4635 | /** | |
4636 | * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ. | |
4637 | * @ipr_cmd: ipr command struct | |
4638 | * | |
4639 | * This function send an Identify Host Request Response Queue | |
4640 | * command to establish the HRRQ with the adapter. | |
4641 | * | |
4642 | * Return value: | |
4643 | * IPR_RC_JOB_RETURN | |
4644 | **/ | |
4645 | static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd) | |
4646 | { | |
4647 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4648 | struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; | |
4649 | ||
4650 | ENTER; | |
4651 | dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); | |
4652 | ||
4653 | ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; | |
4654 | ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); | |
4655 | ||
4656 | ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; | |
4657 | ioarcb->cmd_pkt.cdb[2] = | |
4658 | ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff; | |
4659 | ioarcb->cmd_pkt.cdb[3] = | |
4660 | ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff; | |
4661 | ioarcb->cmd_pkt.cdb[4] = | |
4662 | ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff; | |
4663 | ioarcb->cmd_pkt.cdb[5] = | |
4664 | ((u32) ioa_cfg->host_rrq_dma) & 0xff; | |
4665 | ioarcb->cmd_pkt.cdb[7] = | |
4666 | ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; | |
4667 | ioarcb->cmd_pkt.cdb[8] = | |
4668 | (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; | |
4669 | ||
4670 | ipr_cmd->job_step = ipr_ioafp_std_inquiry; | |
4671 | ||
4672 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); | |
4673 | ||
4674 | LEAVE; | |
4675 | return IPR_RC_JOB_RETURN; | |
4676 | } | |
4677 | ||
4678 | /** | |
4679 | * ipr_reset_timer_done - Adapter reset timer function | |
4680 | * @ipr_cmd: ipr command struct | |
4681 | * | |
4682 | * Description: This function is used in adapter reset processing | |
4683 | * for timing events. If the reset_cmd pointer in the IOA | |
4684 | * config struct is not this adapter's we are doing nested | |
4685 | * resets and fail_all_ops will take care of freeing the | |
4686 | * command block. | |
4687 | * | |
4688 | * Return value: | |
4689 | * none | |
4690 | **/ | |
4691 | static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) | |
4692 | { | |
4693 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4694 | unsigned long lock_flags = 0; | |
4695 | ||
4696 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
4697 | ||
4698 | if (ioa_cfg->reset_cmd == ipr_cmd) { | |
4699 | list_del(&ipr_cmd->queue); | |
4700 | ipr_cmd->done(ipr_cmd); | |
4701 | } | |
4702 | ||
4703 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
4704 | } | |
4705 | ||
4706 | /** | |
4707 | * ipr_reset_start_timer - Start a timer for adapter reset job | |
4708 | * @ipr_cmd: ipr command struct | |
4709 | * @timeout: timeout value | |
4710 | * | |
4711 | * Description: This function is used in adapter reset processing | |
4712 | * for timing events. If the reset_cmd pointer in the IOA | |
4713 | * config struct is not this adapter's we are doing nested | |
4714 | * resets and fail_all_ops will take care of freeing the | |
4715 | * command block. | |
4716 | * | |
4717 | * Return value: | |
4718 | * none | |
4719 | **/ | |
4720 | static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, | |
4721 | unsigned long timeout) | |
4722 | { | |
4723 | list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); | |
4724 | ipr_cmd->done = ipr_reset_ioa_job; | |
4725 | ||
4726 | ipr_cmd->timer.data = (unsigned long) ipr_cmd; | |
4727 | ipr_cmd->timer.expires = jiffies + timeout; | |
4728 | ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; | |
4729 | add_timer(&ipr_cmd->timer); | |
4730 | } | |
4731 | ||
4732 | /** | |
4733 | * ipr_init_ioa_mem - Initialize ioa_cfg control block | |
4734 | * @ioa_cfg: ioa cfg struct | |
4735 | * | |
4736 | * Return value: | |
4737 | * nothing | |
4738 | **/ | |
4739 | static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) | |
4740 | { | |
4741 | memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); | |
4742 | ||
4743 | /* Initialize Host RRQ pointers */ | |
4744 | ioa_cfg->hrrq_start = ioa_cfg->host_rrq; | |
4745 | ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; | |
4746 | ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; | |
4747 | ioa_cfg->toggle_bit = 1; | |
4748 | ||
4749 | /* Zero out config table */ | |
4750 | memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table)); | |
4751 | } | |
4752 | ||
4753 | /** | |
4754 | * ipr_reset_enable_ioa - Enable the IOA following a reset. | |
4755 | * @ipr_cmd: ipr command struct | |
4756 | * | |
4757 | * This function reinitializes some control blocks and | |
4758 | * enables destructive diagnostics on the adapter. | |
4759 | * | |
4760 | * Return value: | |
4761 | * IPR_RC_JOB_RETURN | |
4762 | **/ | |
4763 | static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) | |
4764 | { | |
4765 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4766 | volatile u32 int_reg; | |
4767 | ||
4768 | ENTER; | |
4769 | ipr_cmd->job_step = ipr_ioafp_indentify_hrrq; | |
4770 | ipr_init_ioa_mem(ioa_cfg); | |
4771 | ||
4772 | ioa_cfg->allow_interrupts = 1; | |
4773 | int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); | |
4774 | ||
4775 | if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { | |
4776 | writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), | |
4777 | ioa_cfg->regs.clr_interrupt_mask_reg); | |
4778 | int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); | |
4779 | return IPR_RC_JOB_CONTINUE; | |
4780 | } | |
4781 | ||
4782 | /* Enable destructive diagnostics on IOA */ | |
4783 | writel(IPR_DOORBELL, ioa_cfg->regs.set_uproc_interrupt_reg); | |
4784 | ||
4785 | writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg); | |
4786 | int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); | |
4787 | ||
4788 | dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); | |
4789 | ||
4790 | ipr_cmd->timer.data = (unsigned long) ipr_cmd; | |
4791 | ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ); | |
4792 | ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; | |
4793 | ipr_cmd->done = ipr_reset_ioa_job; | |
4794 | add_timer(&ipr_cmd->timer); | |
4795 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); | |
4796 | ||
4797 | LEAVE; | |
4798 | return IPR_RC_JOB_RETURN; | |
4799 | } | |
4800 | ||
4801 | /** | |
4802 | * ipr_reset_wait_for_dump - Wait for a dump to timeout. | |
4803 | * @ipr_cmd: ipr command struct | |
4804 | * | |
4805 | * This function is invoked when an adapter dump has run out | |
4806 | * of processing time. | |
4807 | * | |
4808 | * Return value: | |
4809 | * IPR_RC_JOB_CONTINUE | |
4810 | **/ | |
4811 | static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) | |
4812 | { | |
4813 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4814 | ||
4815 | if (ioa_cfg->sdt_state == GET_DUMP) | |
4816 | ioa_cfg->sdt_state = ABORT_DUMP; | |
4817 | ||
4818 | ipr_cmd->job_step = ipr_reset_alert; | |
4819 | ||
4820 | return IPR_RC_JOB_CONTINUE; | |
4821 | } | |
4822 | ||
4823 | /** | |
4824 | * ipr_unit_check_no_data - Log a unit check/no data error log | |
4825 | * @ioa_cfg: ioa config struct | |
4826 | * | |
4827 | * Logs an error indicating the adapter unit checked, but for some | |
4828 | * reason, we were unable to fetch the unit check buffer. | |
4829 | * | |
4830 | * Return value: | |
4831 | * nothing | |
4832 | **/ | |
4833 | static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) | |
4834 | { | |
4835 | ioa_cfg->errors_logged++; | |
4836 | dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); | |
4837 | } | |
4838 | ||
4839 | /** | |
4840 | * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA | |
4841 | * @ioa_cfg: ioa config struct | |
4842 | * | |
4843 | * Fetches the unit check buffer from the adapter by clocking the data | |
4844 | * through the mailbox register. | |
4845 | * | |
4846 | * Return value: | |
4847 | * nothing | |
4848 | **/ | |
4849 | static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) | |
4850 | { | |
4851 | unsigned long mailbox; | |
4852 | struct ipr_hostrcb *hostrcb; | |
4853 | struct ipr_uc_sdt sdt; | |
4854 | int rc, length; | |
4855 | ||
4856 | mailbox = readl(ioa_cfg->ioa_mailbox); | |
4857 | ||
4858 | if (!ipr_sdt_is_fmt2(mailbox)) { | |
4859 | ipr_unit_check_no_data(ioa_cfg); | |
4860 | return; | |
4861 | } | |
4862 | ||
4863 | memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); | |
4864 | rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, | |
4865 | (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); | |
4866 | ||
4867 | if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) || | |
4868 | !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) { | |
4869 | ipr_unit_check_no_data(ioa_cfg); | |
4870 | return; | |
4871 | } | |
4872 | ||
4873 | /* Find length of the first sdt entry (UC buffer) */ | |
4874 | length = (be32_to_cpu(sdt.entry[0].end_offset) - | |
4875 | be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK; | |
4876 | ||
4877 | hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, | |
4878 | struct ipr_hostrcb, queue); | |
4879 | list_del(&hostrcb->queue); | |
4880 | memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); | |
4881 | ||
4882 | rc = ipr_get_ldump_data_section(ioa_cfg, | |
4883 | be32_to_cpu(sdt.entry[0].bar_str_offset), | |
4884 | (__be32 *)&hostrcb->hcam, | |
4885 | min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); | |
4886 | ||
4887 | if (!rc) | |
4888 | ipr_handle_log_data(ioa_cfg, hostrcb); | |
4889 | else | |
4890 | ipr_unit_check_no_data(ioa_cfg); | |
4891 | ||
4892 | list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); | |
4893 | } | |
4894 | ||
4895 | /** | |
4896 | * ipr_reset_restore_cfg_space - Restore PCI config space. | |
4897 | * @ipr_cmd: ipr command struct | |
4898 | * | |
4899 | * Description: This function restores the saved PCI config space of | |
4900 | * the adapter, fails all outstanding ops back to the callers, and | |
4901 | * fetches the dump/unit check if applicable to this reset. | |
4902 | * | |
4903 | * Return value: | |
4904 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN | |
4905 | **/ | |
4906 | static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) | |
4907 | { | |
4908 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4909 | int rc; | |
4910 | ||
4911 | ENTER; | |
b30197d2 | 4912 | pci_unblock_user_cfg_access(ioa_cfg->pdev); |
1da177e4 LT |
4913 | rc = pci_restore_state(ioa_cfg->pdev); |
4914 | ||
4915 | if (rc != PCIBIOS_SUCCESSFUL) { | |
4916 | ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); | |
4917 | return IPR_RC_JOB_CONTINUE; | |
4918 | } | |
4919 | ||
4920 | if (ipr_set_pcix_cmd_reg(ioa_cfg)) { | |
4921 | ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); | |
4922 | return IPR_RC_JOB_CONTINUE; | |
4923 | } | |
4924 | ||
4925 | ipr_fail_all_ops(ioa_cfg); | |
4926 | ||
4927 | if (ioa_cfg->ioa_unit_checked) { | |
4928 | ioa_cfg->ioa_unit_checked = 0; | |
4929 | ipr_get_unit_check_buffer(ioa_cfg); | |
4930 | ipr_cmd->job_step = ipr_reset_alert; | |
4931 | ipr_reset_start_timer(ipr_cmd, 0); | |
4932 | return IPR_RC_JOB_RETURN; | |
4933 | } | |
4934 | ||
4935 | if (ioa_cfg->in_ioa_bringdown) { | |
4936 | ipr_cmd->job_step = ipr_ioa_bringdown_done; | |
4937 | } else { | |
4938 | ipr_cmd->job_step = ipr_reset_enable_ioa; | |
4939 | ||
4940 | if (GET_DUMP == ioa_cfg->sdt_state) { | |
4941 | ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); | |
4942 | ipr_cmd->job_step = ipr_reset_wait_for_dump; | |
4943 | schedule_work(&ioa_cfg->work_q); | |
4944 | return IPR_RC_JOB_RETURN; | |
4945 | } | |
4946 | } | |
4947 | ||
4948 | ENTER; | |
4949 | return IPR_RC_JOB_CONTINUE; | |
4950 | } | |
4951 | ||
4952 | /** | |
4953 | * ipr_reset_start_bist - Run BIST on the adapter. | |
4954 | * @ipr_cmd: ipr command struct | |
4955 | * | |
4956 | * Description: This function runs BIST on the adapter, then delays 2 seconds. | |
4957 | * | |
4958 | * Return value: | |
4959 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN | |
4960 | **/ | |
4961 | static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) | |
4962 | { | |
4963 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
4964 | int rc; | |
4965 | ||
4966 | ENTER; | |
b30197d2 | 4967 | pci_block_user_cfg_access(ioa_cfg->pdev); |
1da177e4 LT |
4968 | rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); |
4969 | ||
4970 | if (rc != PCIBIOS_SUCCESSFUL) { | |
4971 | ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); | |
4972 | rc = IPR_RC_JOB_CONTINUE; | |
4973 | } else { | |
4974 | ipr_cmd->job_step = ipr_reset_restore_cfg_space; | |
4975 | ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); | |
4976 | rc = IPR_RC_JOB_RETURN; | |
4977 | } | |
4978 | ||
4979 | LEAVE; | |
4980 | return rc; | |
4981 | } | |
4982 | ||
4983 | /** | |
4984 | * ipr_reset_allowed - Query whether or not IOA can be reset | |
4985 | * @ioa_cfg: ioa config struct | |
4986 | * | |
4987 | * Return value: | |
4988 | * 0 if reset not allowed / non-zero if reset is allowed | |
4989 | **/ | |
4990 | static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) | |
4991 | { | |
4992 | volatile u32 temp_reg; | |
4993 | ||
4994 | temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); | |
4995 | return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); | |
4996 | } | |
4997 | ||
4998 | /** | |
4999 | * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. | |
5000 | * @ipr_cmd: ipr command struct | |
5001 | * | |
5002 | * Description: This function waits for adapter permission to run BIST, | |
5003 | * then runs BIST. If the adapter does not give permission after a | |
5004 | * reasonable time, we will reset the adapter anyway. The impact of | |
5005 | * resetting the adapter without warning the adapter is the risk of | |
5006 | * losing the persistent error log on the adapter. If the adapter is | |
5007 | * reset while it is writing to the flash on the adapter, the flash | |
5008 | * segment will have bad ECC and be zeroed. | |
5009 | * | |
5010 | * Return value: | |
5011 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN | |
5012 | **/ | |
5013 | static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) | |
5014 | { | |
5015 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
5016 | int rc = IPR_RC_JOB_RETURN; | |
5017 | ||
5018 | if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { | |
5019 | ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; | |
5020 | ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); | |
5021 | } else { | |
5022 | ipr_cmd->job_step = ipr_reset_start_bist; | |
5023 | rc = IPR_RC_JOB_CONTINUE; | |
5024 | } | |
5025 | ||
5026 | return rc; | |
5027 | } | |
5028 | ||
5029 | /** | |
5030 | * ipr_reset_alert_part2 - Alert the adapter of a pending reset | |
5031 | * @ipr_cmd: ipr command struct | |
5032 | * | |
5033 | * Description: This function alerts the adapter that it will be reset. | |
5034 | * If memory space is not currently enabled, proceed directly | |
5035 | * to running BIST on the adapter. The timer must always be started | |
5036 | * so we guarantee we do not run BIST from ipr_isr. | |
5037 | * | |
5038 | * Return value: | |
5039 | * IPR_RC_JOB_RETURN | |
5040 | **/ | |
5041 | static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) | |
5042 | { | |
5043 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
5044 | u16 cmd_reg; | |
5045 | int rc; | |
5046 | ||
5047 | ENTER; | |
5048 | rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); | |
5049 | ||
5050 | if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { | |
5051 | ipr_mask_and_clear_interrupts(ioa_cfg, ~0); | |
5052 | writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg); | |
5053 | ipr_cmd->job_step = ipr_reset_wait_to_start_bist; | |
5054 | } else { | |
5055 | ipr_cmd->job_step = ipr_reset_start_bist; | |
5056 | } | |
5057 | ||
5058 | ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; | |
5059 | ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); | |
5060 | ||
5061 | LEAVE; | |
5062 | return IPR_RC_JOB_RETURN; | |
5063 | } | |
5064 | ||
5065 | /** | |
5066 | * ipr_reset_ucode_download_done - Microcode download completion | |
5067 | * @ipr_cmd: ipr command struct | |
5068 | * | |
5069 | * Description: This function unmaps the microcode download buffer. | |
5070 | * | |
5071 | * Return value: | |
5072 | * IPR_RC_JOB_CONTINUE | |
5073 | **/ | |
5074 | static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) | |
5075 | { | |
5076 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
5077 | struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; | |
5078 | ||
5079 | pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, | |
5080 | sglist->num_sg, DMA_TO_DEVICE); | |
5081 | ||
5082 | ipr_cmd->job_step = ipr_reset_alert; | |
5083 | return IPR_RC_JOB_CONTINUE; | |
5084 | } | |
5085 | ||
5086 | /** | |
5087 | * ipr_reset_ucode_download - Download microcode to the adapter | |
5088 | * @ipr_cmd: ipr command struct | |
5089 | * | |
5090 | * Description: This function checks to see if it there is microcode | |
5091 | * to download to the adapter. If there is, a download is performed. | |
5092 | * | |
5093 | * Return value: | |
5094 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN | |
5095 | **/ | |
5096 | static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) | |
5097 | { | |
5098 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
5099 | struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; | |
5100 | ||
5101 | ENTER; | |
5102 | ipr_cmd->job_step = ipr_reset_alert; | |
5103 | ||
5104 | if (!sglist) | |
5105 | return IPR_RC_JOB_CONTINUE; | |
5106 | ||
5107 | ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); | |
5108 | ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; | |
5109 | ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; | |
5110 | ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; | |
5111 | ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; | |
5112 | ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; | |
5113 | ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; | |
5114 | ||
5115 | if (ipr_map_ucode_buffer(ipr_cmd, sglist, sglist->buffer_len)) { | |
5116 | dev_err(&ioa_cfg->pdev->dev, | |
5117 | "Failed to map microcode download buffer\n"); | |
5118 | return IPR_RC_JOB_CONTINUE; | |
5119 | } | |
5120 | ||
5121 | ipr_cmd->job_step = ipr_reset_ucode_download_done; | |
5122 | ||
5123 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, | |
5124 | IPR_WRITE_BUFFER_TIMEOUT); | |
5125 | ||
5126 | LEAVE; | |
5127 | return IPR_RC_JOB_RETURN; | |
5128 | } | |
5129 | ||
5130 | /** | |
5131 | * ipr_reset_shutdown_ioa - Shutdown the adapter | |
5132 | * @ipr_cmd: ipr command struct | |
5133 | * | |
5134 | * Description: This function issues an adapter shutdown of the | |
5135 | * specified type to the specified adapter as part of the | |
5136 | * adapter reset job. | |
5137 | * | |
5138 | * Return value: | |
5139 | * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN | |
5140 | **/ | |
5141 | static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) | |
5142 | { | |
5143 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
5144 | enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; | |
5145 | unsigned long timeout; | |
5146 | int rc = IPR_RC_JOB_CONTINUE; | |
5147 | ||
5148 | ENTER; | |
5149 | if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { | |
5150 | ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); | |
5151 | ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; | |
5152 | ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; | |
5153 | ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; | |
5154 | ||
5155 | if (shutdown_type == IPR_SHUTDOWN_ABBREV) | |
5156 | timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; | |
5157 | else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) | |
5158 | timeout = IPR_INTERNAL_TIMEOUT; | |
5159 | else | |
5160 | timeout = IPR_SHUTDOWN_TIMEOUT; | |
5161 | ||
5162 | ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); | |
5163 | ||
5164 | rc = IPR_RC_JOB_RETURN; | |
5165 | ipr_cmd->job_step = ipr_reset_ucode_download; | |
5166 | } else | |
5167 | ipr_cmd->job_step = ipr_reset_alert; | |
5168 | ||
5169 | LEAVE; | |
5170 | return rc; | |
5171 | } | |
5172 | ||
5173 | /** | |
5174 | * ipr_reset_ioa_job - Adapter reset job | |
5175 | * @ipr_cmd: ipr command struct | |
5176 | * | |
5177 | * Description: This function is the job router for the adapter reset job. | |
5178 | * | |
5179 | * Return value: | |
5180 | * none | |
5181 | **/ | |
5182 | static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) | |
5183 | { | |
5184 | u32 rc, ioasc; | |
5185 | unsigned long scratch = ipr_cmd->u.scratch; | |
5186 | struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; | |
5187 | ||
5188 | do { | |
5189 | ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); | |
5190 | ||
5191 | if (ioa_cfg->reset_cmd != ipr_cmd) { | |
5192 | /* | |
5193 | * We are doing nested adapter resets and this is | |
5194 | * not the current reset job. | |
5195 | */ | |
5196 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
5197 | return; | |
5198 | } | |
5199 | ||
5200 | if (IPR_IOASC_SENSE_KEY(ioasc)) { | |
5201 | dev_err(&ioa_cfg->pdev->dev, | |
5202 | "0x%02X failed with IOASC: 0x%08X\n", | |
5203 | ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); | |
5204 | ||
5205 | ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); | |
5206 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
5207 | return; | |
5208 | } | |
5209 | ||
5210 | ipr_reinit_ipr_cmnd(ipr_cmd); | |
5211 | ipr_cmd->u.scratch = scratch; | |
5212 | rc = ipr_cmd->job_step(ipr_cmd); | |
5213 | } while(rc == IPR_RC_JOB_CONTINUE); | |
5214 | } | |
5215 | ||
5216 | /** | |
5217 | * _ipr_initiate_ioa_reset - Initiate an adapter reset | |
5218 | * @ioa_cfg: ioa config struct | |
5219 | * @job_step: first job step of reset job | |
5220 | * @shutdown_type: shutdown type | |
5221 | * | |
5222 | * Description: This function will initiate the reset of the given adapter | |
5223 | * starting at the selected job step. | |
5224 | * If the caller needs to wait on the completion of the reset, | |
5225 | * the caller must sleep on the reset_wait_q. | |
5226 | * | |
5227 | * Return value: | |
5228 | * none | |
5229 | **/ | |
5230 | static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, | |
5231 | int (*job_step) (struct ipr_cmnd *), | |
5232 | enum ipr_shutdown_type shutdown_type) | |
5233 | { | |
5234 | struct ipr_cmnd *ipr_cmd; | |
5235 | ||
5236 | ioa_cfg->in_reset_reload = 1; | |
5237 | ioa_cfg->allow_cmds = 0; | |
5238 | scsi_block_requests(ioa_cfg->host); | |
5239 | ||
5240 | ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); | |
5241 | ioa_cfg->reset_cmd = ipr_cmd; | |
5242 | ipr_cmd->job_step = job_step; | |
5243 | ipr_cmd->u.shutdown_type = shutdown_type; | |
5244 | ||
5245 | ipr_reset_ioa_job(ipr_cmd); | |
5246 | } | |
5247 | ||
5248 | /** | |
5249 | * ipr_initiate_ioa_reset - Initiate an adapter reset | |
5250 | * @ioa_cfg: ioa config struct | |
5251 | * @shutdown_type: shutdown type | |
5252 | * | |
5253 | * Description: This function will initiate the reset of the given adapter. | |
5254 | * If the caller needs to wait on the completion of the reset, | |
5255 | * the caller must sleep on the reset_wait_q. | |
5256 | * | |
5257 | * Return value: | |
5258 | * none | |
5259 | **/ | |
5260 | static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, | |
5261 | enum ipr_shutdown_type shutdown_type) | |
5262 | { | |
5263 | if (ioa_cfg->ioa_is_dead) | |
5264 | return; | |
5265 | ||
5266 | if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) | |
5267 | ioa_cfg->sdt_state = ABORT_DUMP; | |
5268 | ||
5269 | if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { | |
5270 | dev_err(&ioa_cfg->pdev->dev, | |
5271 | "IOA taken offline - error recovery failed\n"); | |
5272 | ||
5273 | ioa_cfg->reset_retries = 0; | |
5274 | ioa_cfg->ioa_is_dead = 1; | |
5275 | ||
5276 | if (ioa_cfg->in_ioa_bringdown) { | |
5277 | ioa_cfg->reset_cmd = NULL; | |
5278 | ioa_cfg->in_reset_reload = 0; | |
5279 | ipr_fail_all_ops(ioa_cfg); | |
5280 | wake_up_all(&ioa_cfg->reset_wait_q); | |
5281 | ||
5282 | spin_unlock_irq(ioa_cfg->host->host_lock); | |
5283 | scsi_unblock_requests(ioa_cfg->host); | |
5284 | spin_lock_irq(ioa_cfg->host->host_lock); | |
5285 | return; | |
5286 | } else { | |
5287 | ioa_cfg->in_ioa_bringdown = 1; | |
5288 | shutdown_type = IPR_SHUTDOWN_NONE; | |
5289 | } | |
5290 | } | |
5291 | ||
5292 | _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, | |
5293 | shutdown_type); | |
5294 | } | |
5295 | ||
5296 | /** | |
5297 | * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) | |
5298 | * @ioa_cfg: ioa cfg struct | |
5299 | * | |
5300 | * Description: This is the second phase of adapter intialization | |
5301 | * This function takes care of initilizing the adapter to the point | |
5302 | * where it can accept new commands. | |
5303 | ||
5304 | * Return value: | |
5305 | * 0 on sucess / -EIO on failure | |
5306 | **/ | |
5307 | static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) | |
5308 | { | |
5309 | int rc = 0; | |
5310 | unsigned long host_lock_flags = 0; | |
5311 | ||
5312 | ENTER; | |
5313 | spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); | |
5314 | dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); | |
5315 | _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, IPR_SHUTDOWN_NONE); | |
5316 | ||
5317 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); | |
5318 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); | |
5319 | spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); | |
5320 | ||
5321 | if (ioa_cfg->ioa_is_dead) { | |
5322 | rc = -EIO; | |
5323 | } else if (ipr_invalid_adapter(ioa_cfg)) { | |
5324 | if (!ipr_testmode) | |
5325 | rc = -EIO; | |
5326 | ||
5327 | dev_err(&ioa_cfg->pdev->dev, | |
5328 | "Adapter not supported in this hardware configuration.\n"); | |
5329 | } | |
5330 | ||
5331 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); | |
5332 | ||
5333 | LEAVE; | |
5334 | return rc; | |
5335 | } | |
5336 | ||
5337 | /** | |
5338 | * ipr_free_cmd_blks - Frees command blocks allocated for an adapter | |
5339 | * @ioa_cfg: ioa config struct | |
5340 | * | |
5341 | * Return value: | |
5342 | * none | |
5343 | **/ | |
5344 | static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) | |
5345 | { | |
5346 | int i; | |
5347 | ||
5348 | for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { | |
5349 | if (ioa_cfg->ipr_cmnd_list[i]) | |
5350 | pci_pool_free(ioa_cfg->ipr_cmd_pool, | |
5351 | ioa_cfg->ipr_cmnd_list[i], | |
5352 | ioa_cfg->ipr_cmnd_list_dma[i]); | |
5353 | ||
5354 | ioa_cfg->ipr_cmnd_list[i] = NULL; | |
5355 | } | |
5356 | ||
5357 | if (ioa_cfg->ipr_cmd_pool) | |
5358 | pci_pool_destroy (ioa_cfg->ipr_cmd_pool); | |
5359 | ||
5360 | ioa_cfg->ipr_cmd_pool = NULL; | |
5361 | } | |
5362 | ||
5363 | /** | |
5364 | * ipr_free_mem - Frees memory allocated for an adapter | |
5365 | * @ioa_cfg: ioa cfg struct | |
5366 | * | |
5367 | * Return value: | |
5368 | * nothing | |
5369 | **/ | |
5370 | static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) | |
5371 | { | |
5372 | int i; | |
5373 | ||
5374 | kfree(ioa_cfg->res_entries); | |
5375 | pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), | |
5376 | ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); | |
5377 | ipr_free_cmd_blks(ioa_cfg); | |
5378 | pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, | |
5379 | ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); | |
5380 | pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table), | |
5381 | ioa_cfg->cfg_table, | |
5382 | ioa_cfg->cfg_table_dma); | |
5383 | ||
5384 | for (i = 0; i < IPR_NUM_HCAMS; i++) { | |
5385 | pci_free_consistent(ioa_cfg->pdev, | |
5386 | sizeof(struct ipr_hostrcb), | |
5387 | ioa_cfg->hostrcb[i], | |
5388 | ioa_cfg->hostrcb_dma[i]); | |
5389 | } | |
5390 | ||
5391 | ipr_free_dump(ioa_cfg); | |
5392 | kfree(ioa_cfg->saved_mode_pages); | |
5393 | kfree(ioa_cfg->trace); | |
5394 | } | |
5395 | ||
5396 | /** | |
5397 | * ipr_free_all_resources - Free all allocated resources for an adapter. | |
5398 | * @ipr_cmd: ipr command struct | |
5399 | * | |
5400 | * This function frees all allocated resources for the | |
5401 | * specified adapter. | |
5402 | * | |
5403 | * Return value: | |
5404 | * none | |
5405 | **/ | |
5406 | static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) | |
5407 | { | |
5408 | struct pci_dev *pdev = ioa_cfg->pdev; | |
5409 | ||
5410 | ENTER; | |
5411 | free_irq(pdev->irq, ioa_cfg); | |
5412 | iounmap(ioa_cfg->hdw_dma_regs); | |
5413 | pci_release_regions(pdev); | |
5414 | ipr_free_mem(ioa_cfg); | |
5415 | scsi_host_put(ioa_cfg->host); | |
5416 | pci_disable_device(pdev); | |
5417 | LEAVE; | |
5418 | } | |
5419 | ||
5420 | /** | |
5421 | * ipr_alloc_cmd_blks - Allocate command blocks for an adapter | |
5422 | * @ioa_cfg: ioa config struct | |
5423 | * | |
5424 | * Return value: | |
5425 | * 0 on success / -ENOMEM on allocation failure | |
5426 | **/ | |
5427 | static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) | |
5428 | { | |
5429 | struct ipr_cmnd *ipr_cmd; | |
5430 | struct ipr_ioarcb *ioarcb; | |
5431 | dma_addr_t dma_addr; | |
5432 | int i; | |
5433 | ||
5434 | ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, | |
5435 | sizeof(struct ipr_cmnd), 8, 0); | |
5436 | ||
5437 | if (!ioa_cfg->ipr_cmd_pool) | |
5438 | return -ENOMEM; | |
5439 | ||
5440 | for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { | |
5441 | ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr); | |
5442 | ||
5443 | if (!ipr_cmd) { | |
5444 | ipr_free_cmd_blks(ioa_cfg); | |
5445 | return -ENOMEM; | |
5446 | } | |
5447 | ||
5448 | memset(ipr_cmd, 0, sizeof(*ipr_cmd)); | |
5449 | ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; | |
5450 | ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; | |
5451 | ||
5452 | ioarcb = &ipr_cmd->ioarcb; | |
5453 | ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr); | |
5454 | ioarcb->host_response_handle = cpu_to_be32(i << 2); | |
5455 | ioarcb->write_ioadl_addr = | |
5456 | cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); | |
5457 | ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; | |
5458 | ioarcb->ioasa_host_pci_addr = | |
5459 | cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa)); | |
5460 | ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); | |
5461 | ipr_cmd->cmd_index = i; | |
5462 | ipr_cmd->ioa_cfg = ioa_cfg; | |
5463 | ipr_cmd->sense_buffer_dma = dma_addr + | |
5464 | offsetof(struct ipr_cmnd, sense_buffer); | |
5465 | ||
5466 | list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); | |
5467 | } | |
5468 | ||
5469 | return 0; | |
5470 | } | |
5471 | ||
5472 | /** | |
5473 | * ipr_alloc_mem - Allocate memory for an adapter | |
5474 | * @ioa_cfg: ioa config struct | |
5475 | * | |
5476 | * Return value: | |
5477 | * 0 on success / non-zero for error | |
5478 | **/ | |
5479 | static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) | |
5480 | { | |
5481 | struct pci_dev *pdev = ioa_cfg->pdev; | |
5482 | int i, rc = -ENOMEM; | |
5483 | ||
5484 | ENTER; | |
5485 | ioa_cfg->res_entries = kmalloc(sizeof(struct ipr_resource_entry) * | |
5486 | IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL); | |
5487 | ||
5488 | if (!ioa_cfg->res_entries) | |
5489 | goto out; | |
5490 | ||
5491 | memset(ioa_cfg->res_entries, 0, | |
5492 | sizeof(struct ipr_resource_entry) * IPR_MAX_PHYSICAL_DEVS); | |
5493 | ||
5494 | for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++) | |
5495 | list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); | |
5496 | ||
5497 | ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, | |
5498 | sizeof(struct ipr_misc_cbs), | |
5499 | &ioa_cfg->vpd_cbs_dma); | |
5500 | ||
5501 | if (!ioa_cfg->vpd_cbs) | |
5502 | goto out_free_res_entries; | |
5503 | ||
5504 | if (ipr_alloc_cmd_blks(ioa_cfg)) | |
5505 | goto out_free_vpd_cbs; | |
5506 | ||
5507 | ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, | |
5508 | sizeof(u32) * IPR_NUM_CMD_BLKS, | |
5509 | &ioa_cfg->host_rrq_dma); | |
5510 | ||
5511 | if (!ioa_cfg->host_rrq) | |
5512 | goto out_ipr_free_cmd_blocks; | |
5513 | ||
5514 | ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev, | |
5515 | sizeof(struct ipr_config_table), | |
5516 | &ioa_cfg->cfg_table_dma); | |
5517 | ||
5518 | if (!ioa_cfg->cfg_table) | |
5519 | goto out_free_host_rrq; | |
5520 | ||
5521 | for (i = 0; i < IPR_NUM_HCAMS; i++) { | |
5522 | ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, | |
5523 | sizeof(struct ipr_hostrcb), | |
5524 | &ioa_cfg->hostrcb_dma[i]); | |
5525 | ||
5526 | if (!ioa_cfg->hostrcb[i]) | |
5527 | goto out_free_hostrcb_dma; | |
5528 | ||
5529 | ioa_cfg->hostrcb[i]->hostrcb_dma = | |
5530 | ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); | |
5531 | list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); | |
5532 | } | |
5533 | ||
5534 | ioa_cfg->trace = kmalloc(sizeof(struct ipr_trace_entry) * | |
5535 | IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); | |
5536 | ||
5537 | if (!ioa_cfg->trace) | |
5538 | goto out_free_hostrcb_dma; | |
5539 | ||
5540 | memset(ioa_cfg->trace, 0, | |
5541 | sizeof(struct ipr_trace_entry) * IPR_NUM_TRACE_ENTRIES); | |
5542 | ||
5543 | rc = 0; | |
5544 | out: | |
5545 | LEAVE; | |
5546 | return rc; | |
5547 | ||
5548 | out_free_hostrcb_dma: | |
5549 | while (i-- > 0) { | |
5550 | pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), | |
5551 | ioa_cfg->hostrcb[i], | |
5552 | ioa_cfg->hostrcb_dma[i]); | |
5553 | } | |
5554 | pci_free_consistent(pdev, sizeof(struct ipr_config_table), | |
5555 | ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma); | |
5556 | out_free_host_rrq: | |
5557 | pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, | |
5558 | ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); | |
5559 | out_ipr_free_cmd_blocks: | |
5560 | ipr_free_cmd_blks(ioa_cfg); | |
5561 | out_free_vpd_cbs: | |
5562 | pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), | |
5563 | ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); | |
5564 | out_free_res_entries: | |
5565 | kfree(ioa_cfg->res_entries); | |
5566 | goto out; | |
5567 | } | |
5568 | ||
5569 | /** | |
5570 | * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values | |
5571 | * @ioa_cfg: ioa config struct | |
5572 | * | |
5573 | * Return value: | |
5574 | * none | |
5575 | **/ | |
5576 | static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) | |
5577 | { | |
5578 | int i; | |
5579 | ||
5580 | for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { | |
5581 | ioa_cfg->bus_attr[i].bus = i; | |
5582 | ioa_cfg->bus_attr[i].qas_enabled = 0; | |
5583 | ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; | |
5584 | if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) | |
5585 | ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; | |
5586 | else | |
5587 | ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; | |
5588 | } | |
5589 | } | |
5590 | ||
5591 | /** | |
5592 | * ipr_init_ioa_cfg - Initialize IOA config struct | |
5593 | * @ioa_cfg: ioa config struct | |
5594 | * @host: scsi host struct | |
5595 | * @pdev: PCI dev struct | |
5596 | * | |
5597 | * Return value: | |
5598 | * none | |
5599 | **/ | |
5600 | static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, | |
5601 | struct Scsi_Host *host, struct pci_dev *pdev) | |
5602 | { | |
5603 | const struct ipr_interrupt_offsets *p; | |
5604 | struct ipr_interrupts *t; | |
5605 | void __iomem *base; | |
5606 | ||
5607 | ioa_cfg->host = host; | |
5608 | ioa_cfg->pdev = pdev; | |
5609 | ioa_cfg->log_level = ipr_log_level; | |
5610 | sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); | |
5611 | sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); | |
5612 | sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); | |
5613 | sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); | |
5614 | sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); | |
5615 | sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); | |
5616 | sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); | |
5617 | sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); | |
5618 | ||
5619 | INIT_LIST_HEAD(&ioa_cfg->free_q); | |
5620 | INIT_LIST_HEAD(&ioa_cfg->pending_q); | |
5621 | INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); | |
5622 | INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); | |
5623 | INIT_LIST_HEAD(&ioa_cfg->free_res_q); | |
5624 | INIT_LIST_HEAD(&ioa_cfg->used_res_q); | |
5625 | INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg); | |
5626 | init_waitqueue_head(&ioa_cfg->reset_wait_q); | |
5627 | ioa_cfg->sdt_state = INACTIVE; | |
5628 | ||
5629 | ipr_initialize_bus_attr(ioa_cfg); | |
5630 | ||
5631 | host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; | |
5632 | host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; | |
5633 | host->max_channel = IPR_MAX_BUS_TO_SCAN; | |
5634 | host->unique_id = host->host_no; | |
5635 | host->max_cmd_len = IPR_MAX_CDB_LEN; | |
5636 | pci_set_drvdata(pdev, ioa_cfg); | |
5637 | ||
5638 | p = &ioa_cfg->chip_cfg->regs; | |
5639 | t = &ioa_cfg->regs; | |
5640 | base = ioa_cfg->hdw_dma_regs; | |
5641 | ||
5642 | t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; | |
5643 | t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; | |
5644 | t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; | |
5645 | t->clr_interrupt_reg = base + p->clr_interrupt_reg; | |
5646 | t->sense_interrupt_reg = base + p->sense_interrupt_reg; | |
5647 | t->ioarrin_reg = base + p->ioarrin_reg; | |
5648 | t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; | |
5649 | t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; | |
5650 | t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; | |
5651 | } | |
5652 | ||
5653 | /** | |
5654 | * ipr_get_chip_cfg - Find adapter chip configuration | |
5655 | * @dev_id: PCI device id struct | |
5656 | * | |
5657 | * Return value: | |
5658 | * ptr to chip config on success / NULL on failure | |
5659 | **/ | |
5660 | static const struct ipr_chip_cfg_t * __devinit | |
5661 | ipr_get_chip_cfg(const struct pci_device_id *dev_id) | |
5662 | { | |
5663 | int i; | |
5664 | ||
5665 | if (dev_id->driver_data) | |
5666 | return (const struct ipr_chip_cfg_t *)dev_id->driver_data; | |
5667 | ||
5668 | for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) | |
5669 | if (ipr_chip[i].vendor == dev_id->vendor && | |
5670 | ipr_chip[i].device == dev_id->device) | |
5671 | return ipr_chip[i].cfg; | |
5672 | return NULL; | |
5673 | } | |
5674 | ||
5675 | /** | |
5676 | * ipr_probe_ioa - Allocates memory and does first stage of initialization | |
5677 | * @pdev: PCI device struct | |
5678 | * @dev_id: PCI device id struct | |
5679 | * | |
5680 | * Return value: | |
5681 | * 0 on success / non-zero on failure | |
5682 | **/ | |
5683 | static int __devinit ipr_probe_ioa(struct pci_dev *pdev, | |
5684 | const struct pci_device_id *dev_id) | |
5685 | { | |
5686 | struct ipr_ioa_cfg *ioa_cfg; | |
5687 | struct Scsi_Host *host; | |
5688 | unsigned long ipr_regs_pci; | |
5689 | void __iomem *ipr_regs; | |
5690 | u32 rc = PCIBIOS_SUCCESSFUL; | |
5691 | ||
5692 | ENTER; | |
5693 | ||
5694 | if ((rc = pci_enable_device(pdev))) { | |
5695 | dev_err(&pdev->dev, "Cannot enable adapter\n"); | |
5696 | goto out; | |
5697 | } | |
5698 | ||
5699 | dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); | |
5700 | ||
5701 | host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); | |
5702 | ||
5703 | if (!host) { | |
5704 | dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); | |
5705 | rc = -ENOMEM; | |
5706 | goto out_disable; | |
5707 | } | |
5708 | ||
5709 | ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; | |
5710 | memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); | |
5711 | ||
5712 | ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id); | |
5713 | ||
5714 | if (!ioa_cfg->chip_cfg) { | |
5715 | dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", | |
5716 | dev_id->vendor, dev_id->device); | |
5717 | goto out_scsi_host_put; | |
5718 | } | |
5719 | ||
5720 | ipr_regs_pci = pci_resource_start(pdev, 0); | |
5721 | ||
5722 | rc = pci_request_regions(pdev, IPR_NAME); | |
5723 | if (rc < 0) { | |
5724 | dev_err(&pdev->dev, | |
5725 | "Couldn't register memory range of registers\n"); | |
5726 | goto out_scsi_host_put; | |
5727 | } | |
5728 | ||
5729 | ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0)); | |
5730 | ||
5731 | if (!ipr_regs) { | |
5732 | dev_err(&pdev->dev, | |
5733 | "Couldn't map memory range of registers\n"); | |
5734 | rc = -ENOMEM; | |
5735 | goto out_release_regions; | |
5736 | } | |
5737 | ||
5738 | ioa_cfg->hdw_dma_regs = ipr_regs; | |
5739 | ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; | |
5740 | ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; | |
5741 | ||
5742 | ipr_init_ioa_cfg(ioa_cfg, host, pdev); | |
5743 | ||
5744 | pci_set_master(pdev); | |
5745 | ||
5746 | rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
5747 | if (rc < 0) { | |
5748 | dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); | |
5749 | goto cleanup_nomem; | |
5750 | } | |
5751 | ||
5752 | rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, | |
5753 | ioa_cfg->chip_cfg->cache_line_size); | |
5754 | ||
5755 | if (rc != PCIBIOS_SUCCESSFUL) { | |
5756 | dev_err(&pdev->dev, "Write of cache line size failed\n"); | |
5757 | rc = -EIO; | |
5758 | goto cleanup_nomem; | |
5759 | } | |
5760 | ||
5761 | /* Save away PCI config space for use following IOA reset */ | |
5762 | rc = pci_save_state(pdev); | |
5763 | ||
5764 | if (rc != PCIBIOS_SUCCESSFUL) { | |
5765 | dev_err(&pdev->dev, "Failed to save PCI config space\n"); | |
5766 | rc = -EIO; | |
5767 | goto cleanup_nomem; | |
5768 | } | |
5769 | ||
5770 | if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) | |
5771 | goto cleanup_nomem; | |
5772 | ||
5773 | if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) | |
5774 | goto cleanup_nomem; | |
5775 | ||
5776 | rc = ipr_alloc_mem(ioa_cfg); | |
5777 | if (rc < 0) { | |
5778 | dev_err(&pdev->dev, | |
5779 | "Couldn't allocate enough memory for device driver!\n"); | |
5780 | goto cleanup_nomem; | |
5781 | } | |
5782 | ||
5783 | ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); | |
5784 | rc = request_irq(pdev->irq, ipr_isr, SA_SHIRQ, IPR_NAME, ioa_cfg); | |
5785 | ||
5786 | if (rc) { | |
5787 | dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", | |
5788 | pdev->irq, rc); | |
5789 | goto cleanup_nolog; | |
5790 | } | |
5791 | ||
5792 | spin_lock(&ipr_driver_lock); | |
5793 | list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); | |
5794 | spin_unlock(&ipr_driver_lock); | |
5795 | ||
5796 | LEAVE; | |
5797 | out: | |
5798 | return rc; | |
5799 | ||
5800 | cleanup_nolog: | |
5801 | ipr_free_mem(ioa_cfg); | |
5802 | cleanup_nomem: | |
5803 | iounmap(ipr_regs); | |
5804 | out_release_regions: | |
5805 | pci_release_regions(pdev); | |
5806 | out_scsi_host_put: | |
5807 | scsi_host_put(host); | |
5808 | out_disable: | |
5809 | pci_disable_device(pdev); | |
5810 | goto out; | |
5811 | } | |
5812 | ||
5813 | /** | |
5814 | * ipr_scan_vsets - Scans for VSET devices | |
5815 | * @ioa_cfg: ioa config struct | |
5816 | * | |
5817 | * Description: Since the VSET resources do not follow SAM in that we can have | |
5818 | * sparse LUNs with no LUN 0, we have to scan for these ourselves. | |
5819 | * | |
5820 | * Return value: | |
5821 | * none | |
5822 | **/ | |
5823 | static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) | |
5824 | { | |
5825 | int target, lun; | |
5826 | ||
5827 | for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) | |
5828 | for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) | |
5829 | scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); | |
5830 | } | |
5831 | ||
5832 | /** | |
5833 | * ipr_initiate_ioa_bringdown - Bring down an adapter | |
5834 | * @ioa_cfg: ioa config struct | |
5835 | * @shutdown_type: shutdown type | |
5836 | * | |
5837 | * Description: This function will initiate bringing down the adapter. | |
5838 | * This consists of issuing an IOA shutdown to the adapter | |
5839 | * to flush the cache, and running BIST. | |
5840 | * If the caller needs to wait on the completion of the reset, | |
5841 | * the caller must sleep on the reset_wait_q. | |
5842 | * | |
5843 | * Return value: | |
5844 | * none | |
5845 | **/ | |
5846 | static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, | |
5847 | enum ipr_shutdown_type shutdown_type) | |
5848 | { | |
5849 | ENTER; | |
5850 | if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) | |
5851 | ioa_cfg->sdt_state = ABORT_DUMP; | |
5852 | ioa_cfg->reset_retries = 0; | |
5853 | ioa_cfg->in_ioa_bringdown = 1; | |
5854 | ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); | |
5855 | LEAVE; | |
5856 | } | |
5857 | ||
5858 | /** | |
5859 | * __ipr_remove - Remove a single adapter | |
5860 | * @pdev: pci device struct | |
5861 | * | |
5862 | * Adapter hot plug remove entry point. | |
5863 | * | |
5864 | * Return value: | |
5865 | * none | |
5866 | **/ | |
5867 | static void __ipr_remove(struct pci_dev *pdev) | |
5868 | { | |
5869 | unsigned long host_lock_flags = 0; | |
5870 | struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); | |
5871 | ENTER; | |
5872 | ||
5873 | spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); | |
5874 | ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); | |
5875 | ||
5876 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); | |
5877 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); | |
5cbf5eae | 5878 | flush_scheduled_work(); |
1da177e4 LT |
5879 | spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); |
5880 | ||
5881 | spin_lock(&ipr_driver_lock); | |
5882 | list_del(&ioa_cfg->queue); | |
5883 | spin_unlock(&ipr_driver_lock); | |
5884 | ||
5885 | if (ioa_cfg->sdt_state == ABORT_DUMP) | |
5886 | ioa_cfg->sdt_state = WAIT_FOR_DUMP; | |
5887 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); | |
5888 | ||
5889 | ipr_free_all_resources(ioa_cfg); | |
5890 | ||
5891 | LEAVE; | |
5892 | } | |
5893 | ||
5894 | /** | |
5895 | * ipr_remove - IOA hot plug remove entry point | |
5896 | * @pdev: pci device struct | |
5897 | * | |
5898 | * Adapter hot plug remove entry point. | |
5899 | * | |
5900 | * Return value: | |
5901 | * none | |
5902 | **/ | |
5903 | static void ipr_remove(struct pci_dev *pdev) | |
5904 | { | |
5905 | struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); | |
5906 | ||
5907 | ENTER; | |
5908 | ||
1da177e4 LT |
5909 | ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, |
5910 | &ipr_trace_attr); | |
5911 | ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj, | |
5912 | &ipr_dump_attr); | |
5913 | scsi_remove_host(ioa_cfg->host); | |
5914 | ||
5915 | __ipr_remove(pdev); | |
5916 | ||
5917 | LEAVE; | |
5918 | } | |
5919 | ||
5920 | /** | |
5921 | * ipr_probe - Adapter hot plug add entry point | |
5922 | * | |
5923 | * Return value: | |
5924 | * 0 on success / non-zero on failure | |
5925 | **/ | |
5926 | static int __devinit ipr_probe(struct pci_dev *pdev, | |
5927 | const struct pci_device_id *dev_id) | |
5928 | { | |
5929 | struct ipr_ioa_cfg *ioa_cfg; | |
5930 | int rc; | |
5931 | ||
5932 | rc = ipr_probe_ioa(pdev, dev_id); | |
5933 | ||
5934 | if (rc) | |
5935 | return rc; | |
5936 | ||
5937 | ioa_cfg = pci_get_drvdata(pdev); | |
5938 | rc = ipr_probe_ioa_part2(ioa_cfg); | |
5939 | ||
5940 | if (rc) { | |
5941 | __ipr_remove(pdev); | |
5942 | return rc; | |
5943 | } | |
5944 | ||
5945 | rc = scsi_add_host(ioa_cfg->host, &pdev->dev); | |
5946 | ||
5947 | if (rc) { | |
5948 | __ipr_remove(pdev); | |
5949 | return rc; | |
5950 | } | |
5951 | ||
5952 | rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj, | |
5953 | &ipr_trace_attr); | |
5954 | ||
5955 | if (rc) { | |
5956 | scsi_remove_host(ioa_cfg->host); | |
5957 | __ipr_remove(pdev); | |
5958 | return rc; | |
5959 | } | |
5960 | ||
5961 | rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj, | |
5962 | &ipr_dump_attr); | |
5963 | ||
5964 | if (rc) { | |
5965 | ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, | |
5966 | &ipr_trace_attr); | |
5967 | scsi_remove_host(ioa_cfg->host); | |
5968 | __ipr_remove(pdev); | |
5969 | return rc; | |
5970 | } | |
5971 | ||
5972 | scsi_scan_host(ioa_cfg->host); | |
5973 | ipr_scan_vsets(ioa_cfg); | |
5974 | scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); | |
5975 | ioa_cfg->allow_ml_add_del = 1; | |
11cd8f12 | 5976 | ioa_cfg->host->max_channel = IPR_VSET_BUS; |
1da177e4 LT |
5977 | schedule_work(&ioa_cfg->work_q); |
5978 | return 0; | |
5979 | } | |
5980 | ||
5981 | /** | |
5982 | * ipr_shutdown - Shutdown handler. | |
d18c3db5 | 5983 | * @pdev: pci device struct |
1da177e4 LT |
5984 | * |
5985 | * This function is invoked upon system shutdown/reboot. It will issue | |
5986 | * an adapter shutdown to the adapter to flush the write cache. | |
5987 | * | |
5988 | * Return value: | |
5989 | * none | |
5990 | **/ | |
d18c3db5 | 5991 | static void ipr_shutdown(struct pci_dev *pdev) |
1da177e4 | 5992 | { |
d18c3db5 | 5993 | struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); |
1da177e4 LT |
5994 | unsigned long lock_flags = 0; |
5995 | ||
5996 | spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); | |
5997 | ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); | |
5998 | spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); | |
5999 | wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); | |
6000 | } | |
6001 | ||
6002 | static struct pci_device_id ipr_pci_table[] __devinitdata = { | |
6003 | { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, | |
6004 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, | |
6005 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, | |
6006 | { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, | |
6007 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, | |
6008 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, | |
6009 | { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, | |
6010 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, | |
6011 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, | |
6012 | { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, | |
6013 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, | |
6014 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, | |
6015 | { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, | |
6016 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, | |
6017 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, | |
6018 | { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, | |
6019 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, | |
6020 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, | |
6021 | { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, | |
6022 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, | |
6023 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, | |
6024 | { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, | |
6025 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, | |
6026 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, | |
6027 | { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, | |
6028 | PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, | |
6029 | 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, | |
6030 | { } | |
6031 | }; | |
6032 | MODULE_DEVICE_TABLE(pci, ipr_pci_table); | |
6033 | ||
6034 | static struct pci_driver ipr_driver = { | |
6035 | .name = IPR_NAME, | |
6036 | .id_table = ipr_pci_table, | |
6037 | .probe = ipr_probe, | |
6038 | .remove = ipr_remove, | |
d18c3db5 | 6039 | .shutdown = ipr_shutdown, |
1da177e4 LT |
6040 | }; |
6041 | ||
6042 | /** | |
6043 | * ipr_init - Module entry point | |
6044 | * | |
6045 | * Return value: | |
6046 | * 0 on success / negative value on failure | |
6047 | **/ | |
6048 | static int __init ipr_init(void) | |
6049 | { | |
6050 | ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", | |
6051 | IPR_DRIVER_VERSION, IPR_DRIVER_DATE); | |
6052 | ||
6053 | return pci_module_init(&ipr_driver); | |
6054 | } | |
6055 | ||
6056 | /** | |
6057 | * ipr_exit - Module unload | |
6058 | * | |
6059 | * Module unload entry point. | |
6060 | * | |
6061 | * Return value: | |
6062 | * none | |
6063 | **/ | |
6064 | static void __exit ipr_exit(void) | |
6065 | { | |
6066 | pci_unregister_driver(&ipr_driver); | |
6067 | } | |
6068 | ||
6069 | module_init(ipr_init); | |
6070 | module_exit(ipr_exit); |