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[SCSI] allow sleeping in ->eh_abort_handler()
[mirror_ubuntu-zesty-kernel.git] / drivers / scsi / ipr.c
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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 */
88static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head);
89static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
90static unsigned int ipr_max_speed = 1;
91static int ipr_testmode = 0;
92static unsigned int ipr_fastfail = 0;
93static unsigned int ipr_transop_timeout = IPR_OPERATIONAL_TIMEOUT;
94static DEFINE_SPINLOCK(ipr_driver_lock);
95
96/* This table describes the differences between DMA controller chips */
97static 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
130static 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
137static int ipr_max_bus_speeds [] = {
138 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
139};
140
141MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
142MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
143module_param_named(max_speed, ipr_max_speed, uint, 0);
144MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
145module_param_named(log_level, ipr_log_level, uint, 0);
146MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
147module_param_named(testmode, ipr_testmode, int, 0);
148MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
149module_param_named(fastfail, ipr_fastfail, int, 0);
150MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
151module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
152MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
153MODULE_LICENSE("GPL");
154MODULE_VERSION(IPR_DRIVER_VERSION);
155
156static 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
165static 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 */
180static const
181struct 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
380static 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 */
399static int ipr_reset_alert(struct ipr_cmnd *);
400static void ipr_process_ccn(struct ipr_cmnd *);
401static void ipr_process_error(struct ipr_cmnd *);
402static void ipr_reset_ioa_job(struct ipr_cmnd *);
403static 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 **/
416static 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 **/
441static 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 **/
466static 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 **/
481static
482struct 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 **/
501static 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 **/
530static 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 **/
553static 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 **/
579static 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 **/
608static 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 **/
629static 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 **/
664static 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 **/
697static 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 **/
714static 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 **/
741static 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 **/
790static 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 **/
808static 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 **/
870static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
871{
872 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
873 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
874 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
875
876 list_del(&hostrcb->queue);
877 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
878
879 if (ioasc) {
880 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
881 dev_err(&ioa_cfg->pdev->dev,
882 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
883
884 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
885 } else {
886 ipr_handle_config_change(ioa_cfg, hostrcb);
887 }
888}
889
890/**
891 * ipr_log_vpd - Log the passed VPD to the error log.
892 * @vpids: vendor/product id struct
893 * @serial_num: serial number string
894 *
895 * Return value:
896 * none
897 **/
898static void ipr_log_vpd(struct ipr_std_inq_vpids *vpids, u8 *serial_num)
899{
900 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
901 + IPR_SERIAL_NUM_LEN];
902
903 memcpy(buffer, vpids->vendor_id, IPR_VENDOR_ID_LEN);
904 memcpy(buffer + IPR_VENDOR_ID_LEN, vpids->product_id,
905 IPR_PROD_ID_LEN);
906 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
907 ipr_err("Vendor/Product ID: %s\n", buffer);
908
909 memcpy(buffer, serial_num, IPR_SERIAL_NUM_LEN);
910 buffer[IPR_SERIAL_NUM_LEN] = '\0';
911 ipr_err(" Serial Number: %s\n", buffer);
912}
913
914/**
915 * ipr_log_cache_error - Log a cache error.
916 * @ioa_cfg: ioa config struct
917 * @hostrcb: hostrcb struct
918 *
919 * Return value:
920 * none
921 **/
922static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
923 struct ipr_hostrcb *hostrcb)
924{
925 struct ipr_hostrcb_type_02_error *error =
926 &hostrcb->hcam.u.error.u.type_02_error;
927
928 ipr_err("-----Current Configuration-----\n");
929 ipr_err("Cache Directory Card Information:\n");
930 ipr_log_vpd(&error->ioa_vpids, error->ioa_sn);
931 ipr_err("Adapter Card Information:\n");
932 ipr_log_vpd(&error->cfc_vpids, error->cfc_sn);
933
934 ipr_err("-----Expected Configuration-----\n");
935 ipr_err("Cache Directory Card Information:\n");
936 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpids,
937 error->ioa_last_attached_to_cfc_sn);
938 ipr_err("Adapter Card Information:\n");
939 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpids,
940 error->cfc_last_attached_to_ioa_sn);
941
942 ipr_err("Additional IOA Data: %08X %08X %08X\n",
943 be32_to_cpu(error->ioa_data[0]),
944 be32_to_cpu(error->ioa_data[1]),
945 be32_to_cpu(error->ioa_data[2]));
946}
947
948/**
949 * ipr_log_config_error - Log a configuration error.
950 * @ioa_cfg: ioa config struct
951 * @hostrcb: hostrcb struct
952 *
953 * Return value:
954 * none
955 **/
956static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
957 struct ipr_hostrcb *hostrcb)
958{
959 int errors_logged, i;
960 struct ipr_hostrcb_device_data_entry *dev_entry;
961 struct ipr_hostrcb_type_03_error *error;
962
963 error = &hostrcb->hcam.u.error.u.type_03_error;
964 errors_logged = be32_to_cpu(error->errors_logged);
965
966 ipr_err("Device Errors Detected/Logged: %d/%d\n",
967 be32_to_cpu(error->errors_detected), errors_logged);
968
969 dev_entry = error->dev_entry;
970
971 for (i = 0; i < errors_logged; i++, dev_entry++) {
972 ipr_err_separator;
973
974 if (dev_entry->dev_res_addr.bus >= IPR_MAX_NUM_BUSES) {
975 ipr_err("Device %d: missing\n", i + 1);
976 } else {
977 ipr_err("Device %d: %d:%d:%d:%d\n", i + 1,
978 ioa_cfg->host->host_no, dev_entry->dev_res_addr.bus,
979 dev_entry->dev_res_addr.target, dev_entry->dev_res_addr.lun);
980 }
981 ipr_log_vpd(&dev_entry->dev_vpids, dev_entry->dev_sn);
982
983 ipr_err("-----New Device Information-----\n");
984 ipr_log_vpd(&dev_entry->new_dev_vpids, dev_entry->new_dev_sn);
985
986 ipr_err("Cache Directory Card Information:\n");
987 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpids,
988 dev_entry->ioa_last_with_dev_sn);
989
990 ipr_err("Adapter Card Information:\n");
991 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpids,
992 dev_entry->cfc_last_with_dev_sn);
993
994 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
995 be32_to_cpu(dev_entry->ioa_data[0]),
996 be32_to_cpu(dev_entry->ioa_data[1]),
997 be32_to_cpu(dev_entry->ioa_data[2]),
998 be32_to_cpu(dev_entry->ioa_data[3]),
999 be32_to_cpu(dev_entry->ioa_data[4]));
1000 }
1001}
1002
1003/**
1004 * ipr_log_array_error - Log an array configuration error.
1005 * @ioa_cfg: ioa config struct
1006 * @hostrcb: hostrcb struct
1007 *
1008 * Return value:
1009 * none
1010 **/
1011static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1012 struct ipr_hostrcb *hostrcb)
1013{
1014 int i;
1015 struct ipr_hostrcb_type_04_error *error;
1016 struct ipr_hostrcb_array_data_entry *array_entry;
1017 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1018
1019 error = &hostrcb->hcam.u.error.u.type_04_error;
1020
1021 ipr_err_separator;
1022
1023 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1024 error->protection_level,
1025 ioa_cfg->host->host_no,
1026 error->last_func_vset_res_addr.bus,
1027 error->last_func_vset_res_addr.target,
1028 error->last_func_vset_res_addr.lun);
1029
1030 ipr_err_separator;
1031
1032 array_entry = error->array_member;
1033
1034 for (i = 0; i < 18; i++) {
1035 if (!memcmp(array_entry->serial_num, zero_sn, IPR_SERIAL_NUM_LEN))
1036 continue;
1037
1038 if (be32_to_cpu(error->exposed_mode_adn) == i) {
1039 ipr_err("Exposed Array Member %d:\n", i);
1040 } else {
1041 ipr_err("Array Member %d:\n", i);
1042 }
1043
1044 ipr_log_vpd(&array_entry->vpids, array_entry->serial_num);
1045
1046 if (array_entry->dev_res_addr.bus >= IPR_MAX_NUM_BUSES) {
1047 ipr_err("Current Location: unknown\n");
1048 } else {
1049 ipr_err("Current Location: %d:%d:%d:%d\n",
1050 ioa_cfg->host->host_no,
1051 array_entry->dev_res_addr.bus,
1052 array_entry->dev_res_addr.target,
1053 array_entry->dev_res_addr.lun);
1054 }
1055
1b69f645 1056 if (array_entry->expected_dev_res_addr.bus >= IPR_MAX_NUM_BUSES) {
1da177e4
LT		 1057 ipr_err("Expected Location: unknown\n");
1058 } else {
1059 ipr_err("Expected Location: %d:%d:%d:%d\n",
1060 ioa_cfg->host->host_no,
1061 array_entry->expected_dev_res_addr.bus,
1062 array_entry->expected_dev_res_addr.target,
1063 array_entry->expected_dev_res_addr.lun);
1064 }
1065
1066 ipr_err_separator;
1067
1068 if (i == 9)
1069 array_entry = error->array_member2;
1070 else
1071 array_entry++;
1072 }
1073}
1074
1075/**
1076 * ipr_log_generic_error - Log an adapter error.
1077 * @ioa_cfg: ioa config struct
1078 * @hostrcb: hostrcb struct
1079 *
1080 * Return value:
1081 * none
1082 **/
1083static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1084 struct ipr_hostrcb *hostrcb)
1085{
1086 int i;
1087 int ioa_data_len = be32_to_cpu(hostrcb->hcam.length);
1088
1089 if (ioa_data_len == 0)
1090 return;
1091
1092 ipr_err("IOA Error Data:\n");
1093 ipr_err("Offset 0 1 2 3 4 5 6 7 8 9 A B C D E F\n");
1094
1095 for (i = 0; i < ioa_data_len / 4; i += 4) {
1096 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1097 be32_to_cpu(hostrcb->hcam.u.raw.data[i]),
1098 be32_to_cpu(hostrcb->hcam.u.raw.data[i+1]),
1099 be32_to_cpu(hostrcb->hcam.u.raw.data[i+2]),
1100 be32_to_cpu(hostrcb->hcam.u.raw.data[i+3]));
1101 }
1102}
1103
1104/**
1105 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1106 * @ioasc: IOASC
1107 *
1108 * This function will return the index of into the ipr_error_table
1109 * for the specified IOASC. If the IOASC is not in the table,
1110 * 0 will be returned, which points to the entry used for unknown errors.
1111 *
1112 * Return value:
1113 * index into the ipr_error_table
1114 **/
1115static u32 ipr_get_error(u32 ioasc)
1116{
1117 int i;
1118
1119 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1120 if (ipr_error_table[i].ioasc == ioasc)
1121 return i;
1122
1123 return 0;
1124}
1125
1126/**
1127 * ipr_handle_log_data - Log an adapter error.
1128 * @ioa_cfg: ioa config struct
1129 * @hostrcb: hostrcb struct
1130 *
1131 * This function logs an adapter error to the system.
1132 *
1133 * Return value:
1134 * none
1135 **/
1136static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1137 struct ipr_hostrcb *hostrcb)
1138{
1139 u32 ioasc;
1140 int error_index;
1141
1142 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1143 return;
1144
1145 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1146 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1147
1148 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1149
1150 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1151 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1152 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1153 scsi_report_bus_reset(ioa_cfg->host,
1154 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1155 }
1156
1157 error_index = ipr_get_error(ioasc);
1158
1159 if (!ipr_error_table[error_index].log_hcam)
1160 return;
1161
1162 if (ipr_is_device(&hostrcb->hcam.u.error.failing_dev_res_addr)) {
1163 ipr_res_err(ioa_cfg, hostrcb->hcam.u.error.failing_dev_res_addr,
1164 "%s\n", ipr_error_table[error_index].error);
1165 } else {
1166 dev_err(&ioa_cfg->pdev->dev, "%s\n",
1167 ipr_error_table[error_index].error);
1168 }
1169
1170 /* Set indication we have logged an error */
1171 ioa_cfg->errors_logged++;
1172
1173 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
1174 return;
1175
1176 switch (hostrcb->hcam.overlay_id) {
1177 case IPR_HOST_RCB_OVERLAY_ID_1:
1178 ipr_log_generic_error(ioa_cfg, hostrcb);
1179 break;
1180 case IPR_HOST_RCB_OVERLAY_ID_2:
1181 ipr_log_cache_error(ioa_cfg, hostrcb);
1182 break;
1183 case IPR_HOST_RCB_OVERLAY_ID_3:
1184 ipr_log_config_error(ioa_cfg, hostrcb);
1185 break;
1186 case IPR_HOST_RCB_OVERLAY_ID_4:
1187 case IPR_HOST_RCB_OVERLAY_ID_6:
1188 ipr_log_array_error(ioa_cfg, hostrcb);
1189 break;
1190 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1191 ipr_log_generic_error(ioa_cfg, hostrcb);
1192 break;
1193 default:
1194 dev_err(&ioa_cfg->pdev->dev,
1195 "Unknown error received. Overlay ID: %d\n",
1196 hostrcb->hcam.overlay_id);
1197 break;
1198 }
1199}
1200
1201/**
1202 * ipr_process_error - Op done function for an adapter error log.
1203 * @ipr_cmd: ipr command struct
1204 *
1205 * This function is the op done function for an error log host
1206 * controlled async from the adapter. It will log the error and
1207 * send the HCAM back to the adapter.
1208 *
1209 * Return value:
1210 * none
1211 **/
1212static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1213{
1214 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1215 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1216 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1217
1218 list_del(&hostrcb->queue);
1219 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1220
1221 if (!ioasc) {
1222 ipr_handle_log_data(ioa_cfg, hostrcb);
1223 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1224 dev_err(&ioa_cfg->pdev->dev,
1225 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1226 }
1227
1228 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1229}
1230
1231/**
1232 * ipr_timeout - An internally generated op has timed out.
1233 * @ipr_cmd: ipr command struct
1234 *
1235 * This function blocks host requests and initiates an
1236 * adapter reset.
1237 *
1238 * Return value:
1239 * none
1240 **/
1241static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1242{
1243 unsigned long lock_flags = 0;
1244 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1245
1246 ENTER;
1247 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1248
1249 ioa_cfg->errors_logged++;
1250 dev_err(&ioa_cfg->pdev->dev,
1251 "Adapter being reset due to command timeout.\n");
1252
1253 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1254 ioa_cfg->sdt_state = GET_DUMP;
1255
1256 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1257 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1258
1259 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1260 LEAVE;
1261}
1262
1263/**
1264 * ipr_oper_timeout - Adapter timed out transitioning to operational
1265 * @ipr_cmd: ipr command struct
1266 *
1267 * This function blocks host requests and initiates an
1268 * adapter reset.
1269 *
1270 * Return value:
1271 * none
1272 **/
1273static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1274{
1275 unsigned long lock_flags = 0;
1276 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1277
1278 ENTER;
1279 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1280
1281 ioa_cfg->errors_logged++;
1282 dev_err(&ioa_cfg->pdev->dev,
1283 "Adapter timed out transitioning to operational.\n");
1284
1285 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1286 ioa_cfg->sdt_state = GET_DUMP;
1287
1288 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1289 if (ipr_fastfail)
1290 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1291 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1292 }
1293
1294 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1295 LEAVE;
1296}
1297
1298/**
1299 * ipr_reset_reload - Reset/Reload the IOA
1300 * @ioa_cfg: ioa config struct
1301 * @shutdown_type: shutdown type
1302 *
1303 * This function resets the adapter and re-initializes it.
1304 * This function assumes that all new host commands have been stopped.
1305 * Return value:
1306 * SUCCESS / FAILED
1307 **/
1308static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1309 enum ipr_shutdown_type shutdown_type)
1310{
1311 if (!ioa_cfg->in_reset_reload)
1312 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1313
1314 spin_unlock_irq(ioa_cfg->host->host_lock);
1315 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1316 spin_lock_irq(ioa_cfg->host->host_lock);
1317
1318 /* If we got hit with a host reset while we were already resetting
1319 the adapter for some reason, and the reset failed. */
1320 if (ioa_cfg->ioa_is_dead) {
1321 ipr_trace;
1322 return FAILED;
1323 }
1324
1325 return SUCCESS;
1326}
1327
1328/**
1329 * ipr_find_ses_entry - Find matching SES in SES table
1330 * @res: resource entry struct of SES
1331 *
1332 * Return value:
1333 * pointer to SES table entry / NULL on failure
1334 **/
1335static const struct ipr_ses_table_entry *
1336ipr_find_ses_entry(struct ipr_resource_entry *res)
1337{
1338 int i, j, matches;
1339 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1340
1341 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1342 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1343 if (ste->compare_product_id_byte[j] == 'X') {
1344 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1345 matches++;
1346 else
1347 break;
1348 } else
1349 matches++;
1350 }
1351
1352 if (matches == IPR_PROD_ID_LEN)
1353 return ste;
1354 }
1355
1356 return NULL;
1357}
1358
1359/**
1360 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1361 * @ioa_cfg: ioa config struct
1362 * @bus: SCSI bus
1363 * @bus_width: bus width
1364 *
1365 * Return value:
1366 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1367 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1368 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1369 * max 160MHz = max 320MB/sec).
1370 **/
1371static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1372{
1373 struct ipr_resource_entry *res;
1374 const struct ipr_ses_table_entry *ste;
1375 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1376
1377 /* Loop through each config table entry in the config table buffer */
1378 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1379 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1380 continue;
1381
1382 if (bus != res->cfgte.res_addr.bus)
1383 continue;
1384
1385 if (!(ste = ipr_find_ses_entry(res)))
1386 continue;
1387
1388 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1389 }
1390
1391 return max_xfer_rate;
1392}
1393
1394/**
1395 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1396 * @ioa_cfg: ioa config struct
1397 * @max_delay: max delay in micro-seconds to wait
1398 *
1399 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1400 *
1401 * Return value:
1402 * 0 on success / other on failure
1403 **/
1404static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1405{
1406 volatile u32 pcii_reg;
1407 int delay = 1;
1408
1409 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1410 while (delay < max_delay) {
1411 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1412
1413 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1414 return 0;
1415
1416 /* udelay cannot be used if delay is more than a few milliseconds */
1417 if ((delay / 1000) > MAX_UDELAY_MS)
1418 mdelay(delay / 1000);
1419 else
1420 udelay(delay);
1421
1422 delay += delay;
1423 }
1424 return -EIO;
1425}
1426
1427/**
1428 * ipr_get_ldump_data_section - Dump IOA memory
1429 * @ioa_cfg: ioa config struct
1430 * @start_addr: adapter address to dump
1431 * @dest: destination kernel buffer
1432 * @length_in_words: length to dump in 4 byte words
1433 *
1434 * Return value:
1435 * 0 on success / -EIO on failure
1436 **/
1437static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1438 u32 start_addr,
1439 __be32 *dest, u32 length_in_words)
1440{
1441 volatile u32 temp_pcii_reg;
1442 int i, delay = 0;
1443
1444 /* Write IOA interrupt reg starting LDUMP state */
1445 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1446 ioa_cfg->regs.set_uproc_interrupt_reg);
1447
1448 /* Wait for IO debug acknowledge */
1449 if (ipr_wait_iodbg_ack(ioa_cfg,
1450 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1451 dev_err(&ioa_cfg->pdev->dev,
1452 "IOA dump long data transfer timeout\n");
1453 return -EIO;
1454 }
1455
1456 /* Signal LDUMP interlocked - clear IO debug ack */
1457 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1458 ioa_cfg->regs.clr_interrupt_reg);
1459
1460 /* Write Mailbox with starting address */
1461 writel(start_addr, ioa_cfg->ioa_mailbox);
1462
1463 /* Signal address valid - clear IOA Reset alert */
1464 writel(IPR_UPROCI_RESET_ALERT,
1465 ioa_cfg->regs.clr_uproc_interrupt_reg);
1466
1467 for (i = 0; i < length_in_words; i++) {
1468 /* Wait for IO debug acknowledge */
1469 if (ipr_wait_iodbg_ack(ioa_cfg,
1470 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1471 dev_err(&ioa_cfg->pdev->dev,
1472 "IOA dump short data transfer timeout\n");
1473 return -EIO;
1474 }
1475
1476 /* Read data from mailbox and increment destination pointer */
1477 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1478 dest++;
1479
1480 /* For all but the last word of data, signal data received */
1481 if (i < (length_in_words - 1)) {
1482 /* Signal dump data received - Clear IO debug Ack */
1483 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1484 ioa_cfg->regs.clr_interrupt_reg);
1485 }
1486 }
1487
1488 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1489 writel(IPR_UPROCI_RESET_ALERT,
1490 ioa_cfg->regs.set_uproc_interrupt_reg);
1491
1492 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1493 ioa_cfg->regs.clr_uproc_interrupt_reg);
1494
1495 /* Signal dump data received - Clear IO debug Ack */
1496 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1497 ioa_cfg->regs.clr_interrupt_reg);
1498
1499 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
1500 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
1501 temp_pcii_reg =
1502 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
1503
1504 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
1505 return 0;
1506
1507 udelay(10);
1508 delay += 10;
1509 }
1510
1511 return 0;
1512}
1513
1514#ifdef CONFIG_SCSI_IPR_DUMP
1515/**
1516 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
1517 * @ioa_cfg: ioa config struct
1518 * @pci_address: adapter address
1519 * @length: length of data to copy
1520 *
1521 * Copy data from PCI adapter to kernel buffer.
1522 * Note: length MUST be a 4 byte multiple
1523 * Return value:
1524 * 0 on success / other on failure
1525 **/
1526static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
1527 unsigned long pci_address, u32 length)
1528{
1529 int bytes_copied = 0;
1530 int cur_len, rc, rem_len, rem_page_len;
1531 __be32 *page;
1532 unsigned long lock_flags = 0;
1533 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
1534
1535 while (bytes_copied < length &&
1536 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
1537 if (ioa_dump->page_offset >= PAGE_SIZE ||
1538 ioa_dump->page_offset == 0) {
1539 page = (__be32 *)__get_free_page(GFP_ATOMIC);
1540
1541 if (!page) {
1542 ipr_trace;
1543 return bytes_copied;
1544 }
1545
1546 ioa_dump->page_offset = 0;
1547 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
1548 ioa_dump->next_page_index++;
1549 } else
1550 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
1551
1552 rem_len = length - bytes_copied;
1553 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
1554 cur_len = min(rem_len, rem_page_len);
1555
1556 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1557 if (ioa_cfg->sdt_state == ABORT_DUMP) {
1558 rc = -EIO;
1559 } else {
1560 rc = ipr_get_ldump_data_section(ioa_cfg,
1561 pci_address + bytes_copied,
1562 &page[ioa_dump->page_offset / 4],
1563 (cur_len / sizeof(u32)));
1564 }
1565 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1566
1567 if (!rc) {
1568 ioa_dump->page_offset += cur_len;
1569 bytes_copied += cur_len;
1570 } else {
1571 ipr_trace;
1572 break;
1573 }
1574 schedule();
1575 }
1576
1577 return bytes_copied;
1578}
1579
1580/**
1581 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
1582 * @hdr: dump entry header struct
1583 *
1584 * Return value:
1585 * nothing
1586 **/
1587static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
1588{
1589 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
1590 hdr->num_elems = 1;
1591 hdr->offset = sizeof(*hdr);
1592 hdr->status = IPR_DUMP_STATUS_SUCCESS;
1593}
1594
1595/**
1596 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
1597 * @ioa_cfg: ioa config struct
1598 * @driver_dump: driver dump struct
1599 *
1600 * Return value:
1601 * nothing
1602 **/
1603static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
1604 struct ipr_driver_dump *driver_dump)
1605{
1606 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
1607
1608 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
1609 driver_dump->ioa_type_entry.hdr.len =
1610 sizeof(struct ipr_dump_ioa_type_entry) -
1611 sizeof(struct ipr_dump_entry_header);
1612 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1613 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
1614 driver_dump->ioa_type_entry.type = ioa_cfg->type;
1615 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
1616 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
1617 ucode_vpd->minor_release[1];
1618 driver_dump->hdr.num_entries++;
1619}
1620
1621/**
1622 * ipr_dump_version_data - Fill in the driver version in the dump.
1623 * @ioa_cfg: ioa config struct
1624 * @driver_dump: driver dump struct
1625 *
1626 * Return value:
1627 * nothing
1628 **/
1629static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
1630 struct ipr_driver_dump *driver_dump)
1631{
1632 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
1633 driver_dump->version_entry.hdr.len =
1634 sizeof(struct ipr_dump_version_entry) -
1635 sizeof(struct ipr_dump_entry_header);
1636 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1637 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
1638 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
1639 driver_dump->hdr.num_entries++;
1640}
1641
1642/**
1643 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
1644 * @ioa_cfg: ioa config struct
1645 * @driver_dump: driver dump struct
1646 *
1647 * Return value:
1648 * nothing
1649 **/
1650static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
1651 struct ipr_driver_dump *driver_dump)
1652{
1653 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
1654 driver_dump->trace_entry.hdr.len =
1655 sizeof(struct ipr_dump_trace_entry) -
1656 sizeof(struct ipr_dump_entry_header);
1657 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1658 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
1659 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
1660 driver_dump->hdr.num_entries++;
1661}
1662
1663/**
1664 * ipr_dump_location_data - Fill in the IOA location in the dump.
1665 * @ioa_cfg: ioa config struct
1666 * @driver_dump: driver dump struct
1667 *
1668 * Return value:
1669 * nothing
1670 **/
1671static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
1672 struct ipr_driver_dump *driver_dump)
1673{
1674 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
1675 driver_dump->location_entry.hdr.len =
1676 sizeof(struct ipr_dump_location_entry) -
1677 sizeof(struct ipr_dump_entry_header);
1678 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1679 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
1680 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
1681 driver_dump->hdr.num_entries++;
1682}
1683
1684/**
1685 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
1686 * @ioa_cfg: ioa config struct
1687 * @dump: dump struct
1688 *
1689 * Return value:
1690 * nothing
1691 **/
1692static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
1693{
1694 unsigned long start_addr, sdt_word;
1695 unsigned long lock_flags = 0;
1696 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
1697 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
1698 u32 num_entries, start_off, end_off;
1699 u32 bytes_to_copy, bytes_copied, rc;
1700 struct ipr_sdt *sdt;
1701 int i;
1702
1703 ENTER;
1704
1705 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1706
1707 if (ioa_cfg->sdt_state != GET_DUMP) {
1708 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1709 return;
1710 }
1711
1712 start_addr = readl(ioa_cfg->ioa_mailbox);
1713
1714 if (!ipr_sdt_is_fmt2(start_addr)) {
1715 dev_err(&ioa_cfg->pdev->dev,
1716 "Invalid dump table format: %lx\n", start_addr);
1717 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1718 return;
1719 }
1720
1721 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
1722
1723 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
1724
1725 /* Initialize the overall dump header */
1726 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
1727 driver_dump->hdr.num_entries = 1;
1728 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
1729 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
1730 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
1731 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
1732
1733 ipr_dump_version_data(ioa_cfg, driver_dump);
1734 ipr_dump_location_data(ioa_cfg, driver_dump);
1735 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
1736 ipr_dump_trace_data(ioa_cfg, driver_dump);
1737
1738 /* Update dump_header */
1739 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
1740
1741 /* IOA Dump entry */
1742 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
1743 ioa_dump->format = IPR_SDT_FMT2;
1744 ioa_dump->hdr.len = 0;
1745 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1746 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
1747
1748 /* First entries in sdt are actually a list of dump addresses and
1749 lengths to gather the real dump data. sdt represents the pointer
1750 to the ioa generated dump table. Dump data will be extracted based
1751 on entries in this table */
1752 sdt = &ioa_dump->sdt;
1753
1754 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
1755 sizeof(struct ipr_sdt) / sizeof(__be32));
1756
1757 /* Smart Dump table is ready to use and the first entry is valid */
1758 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
1759 dev_err(&ioa_cfg->pdev->dev,
1760 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
1761 rc, be32_to_cpu(sdt->hdr.state));
1762 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
1763 ioa_cfg->sdt_state = DUMP_OBTAINED;
1764 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1765 return;
1766 }
1767
1768 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
1769
1770 if (num_entries > IPR_NUM_SDT_ENTRIES)
1771 num_entries = IPR_NUM_SDT_ENTRIES;
1772
1773 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1774
1775 for (i = 0; i < num_entries; i++) {
1776 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
1777 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
1778 break;
1779 }
1780
1781 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
1782 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
1783 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
1784 end_off = be32_to_cpu(sdt->entry[i].end_offset);
1785
1786 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
1787 bytes_to_copy = end_off - start_off;
1788 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
1789 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
1790 continue;
1791 }
1792
1793 /* Copy data from adapter to driver buffers */
1794 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
1795 bytes_to_copy);
1796
1797 ioa_dump->hdr.len += bytes_copied;
1798
1799 if (bytes_copied != bytes_to_copy) {
1800 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
1801 break;
1802 }
1803 }
1804 }
1805 }
1806
1807 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
1808
1809 /* Update dump_header */
1810 driver_dump->hdr.len += ioa_dump->hdr.len;
1811 wmb();
1812 ioa_cfg->sdt_state = DUMP_OBTAINED;
1813 LEAVE;
1814}
1815
1816#else
1817#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
1818#endif
1819
1820/**
1821 * ipr_release_dump - Free adapter dump memory
1822 * @kref: kref struct
1823 *
1824 * Return value:
1825 * nothing
1826 **/
1827static void ipr_release_dump(struct kref *kref)
1828{
1829 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
1830 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
1831 unsigned long lock_flags = 0;
1832 int i;
1833
1834 ENTER;
1835 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1836 ioa_cfg->dump = NULL;
1837 ioa_cfg->sdt_state = INACTIVE;
1838 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1839
1840 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
1841 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
1842
1843 kfree(dump);
1844 LEAVE;
1845}
1846
1847/**
1848 * ipr_worker_thread - Worker thread
1849 * @data: ioa config struct
1850 *
1851 * Called at task level from a work thread. This function takes care
1852 * of adding and removing device from the mid-layer as configuration
1853 * changes are detected by the adapter.
1854 *
1855 * Return value:
1856 * nothing
1857 **/
1858static void ipr_worker_thread(void *data)
1859{
1860 unsigned long lock_flags;
1861 struct ipr_resource_entry *res;
1862 struct scsi_device *sdev;
1863 struct ipr_dump *dump;
1864 struct ipr_ioa_cfg *ioa_cfg = data;
1865 u8 bus, target, lun;
1866 int did_work;
1867
1868 ENTER;
1869 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1870
1871 if (ioa_cfg->sdt_state == GET_DUMP) {
1872 dump = ioa_cfg->dump;
1873 if (!dump) {
1874 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1875 return;
1876 }
1877 kref_get(&dump->kref);
1878 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1879 ipr_get_ioa_dump(ioa_cfg, dump);
1880 kref_put(&dump->kref, ipr_release_dump);
1881
1882 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1883 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
1884 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1885 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1886 return;
1887 }
1888
1889restart:
1890 do {
1891 did_work = 0;
1892 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
1893 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1894 return;
1895 }
1896
1897 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1898 if (res->del_from_ml && res->sdev) {
1899 did_work = 1;
1900 sdev = res->sdev;
1901 if (!scsi_device_get(sdev)) {
1902 res->sdev = NULL;
1903 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1904 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1905 scsi_remove_device(sdev);
1906 scsi_device_put(sdev);
1907 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1908 }
1909 break;
1910 }
1911 }
1912 } while(did_work);
1913
1914 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1915 if (res->add_to_ml) {
1916 bus = res->cfgte.res_addr.bus;
1917 target = res->cfgte.res_addr.target;
1918 lun = res->cfgte.res_addr.lun;
1919 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1920 scsi_add_device(ioa_cfg->host, bus, target, lun);
1921 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1922 goto restart;
1923 }
1924 }
1925
1926 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1927 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE, NULL);
1928 LEAVE;
1929}
1930
1931#ifdef CONFIG_SCSI_IPR_TRACE
1932/**
1933 * ipr_read_trace - Dump the adapter trace
1934 * @kobj: kobject struct
1935 * @buf: buffer
1936 * @off: offset
1937 * @count: buffer size
1938 *
1939 * Return value:
1940 * number of bytes printed to buffer
1941 **/
1942static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
1943 loff_t off, size_t count)
1944{
1945 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
1946 struct Scsi_Host *shost = class_to_shost(cdev);
1947 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
1948 unsigned long lock_flags = 0;
1949 int size = IPR_TRACE_SIZE;
1950 char *src = (char *)ioa_cfg->trace;
1951
1952 if (off > size)
1953 return 0;
1954 if (off + count > size) {
1955 size -= off;
1956 count = size;
1957 }
1958
1959 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1960 memcpy(buf, &src[off], count);
1961 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1962 return count;
1963}
1964
1965static struct bin_attribute ipr_trace_attr = {
1966 .attr = {
1967 .name = "trace",
1968 .mode = S_IRUGO,
1969 },
1970 .size = 0,
1971 .read = ipr_read_trace,
1972};
1973#endif
1974
1975/**
1976 * ipr_show_fw_version - Show the firmware version
1977 * @class_dev: class device struct
1978 * @buf: buffer
1979 *
1980 * Return value:
1981 * number of bytes printed to buffer
1982 **/
1983static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
1984{
1985 struct Scsi_Host *shost = class_to_shost(class_dev);
1986 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
1987 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
1988 unsigned long lock_flags = 0;
1989 int len;
1990
1991 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1992 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
1993 ucode_vpd->major_release, ucode_vpd->card_type,
1994 ucode_vpd->minor_release[0],
1995 ucode_vpd->minor_release[1]);
1996 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1997 return len;
1998}
1999
2000static struct class_device_attribute ipr_fw_version_attr = {
2001 .attr = {
2002 .name = "fw_version",
2003 .mode = S_IRUGO,
2004 },
2005 .show = ipr_show_fw_version,
2006};
2007
2008/**
2009 * ipr_show_log_level - Show the adapter's error logging level
2010 * @class_dev: class device struct
2011 * @buf: buffer
2012 *
2013 * Return value:
2014 * number of bytes printed to buffer
2015 **/
2016static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2017{
2018 struct Scsi_Host *shost = class_to_shost(class_dev);
2019 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2020 unsigned long lock_flags = 0;
2021 int len;
2022
2023 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2024 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2025 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2026 return len;
2027}
2028
2029/**
2030 * ipr_store_log_level - Change the adapter's error logging level
2031 * @class_dev: class device struct
2032 * @buf: buffer
2033 *
2034 * Return value:
2035 * number of bytes printed to buffer
2036 **/
2037static ssize_t ipr_store_log_level(struct class_device *class_dev,
2038 const char *buf, size_t count)
2039{
2040 struct Scsi_Host *shost = class_to_shost(class_dev);
2041 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2042 unsigned long lock_flags = 0;
2043
2044 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2045 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2046 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2047 return strlen(buf);
2048}
2049
2050static struct class_device_attribute ipr_log_level_attr = {
2051 .attr = {
2052 .name = "log_level",
2053 .mode = S_IRUGO | S_IWUSR,
2054 },
2055 .show = ipr_show_log_level,
2056 .store = ipr_store_log_level
2057};
2058
2059/**
2060 * ipr_store_diagnostics - IOA Diagnostics interface
2061 * @class_dev: class_device struct
2062 * @buf: buffer
2063 * @count: buffer size
2064 *
2065 * This function will reset the adapter and wait a reasonable
2066 * amount of time for any errors that the adapter might log.
2067 *
2068 * Return value:
2069 * count on success / other on failure
2070 **/
2071static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2072 const char *buf, size_t count)
2073{
2074 struct Scsi_Host *shost = class_to_shost(class_dev);
2075 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2076 unsigned long lock_flags = 0;
2077 int rc = count;
2078
2079 if (!capable(CAP_SYS_ADMIN))
2080 return -EACCES;
2081
2082 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2083 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2084 ioa_cfg->errors_logged = 0;
2085 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2086
2087 if (ioa_cfg->in_reset_reload) {
2088 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2089 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2090
2091 /* Wait for a second for any errors to be logged */
2092 msleep(1000);
2093 } else {
2094 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2095 return -EIO;
2096 }
2097
2098 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2099 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2100 rc = -EIO;
2101 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2102
2103 return rc;
2104}
2105
2106static struct class_device_attribute ipr_diagnostics_attr = {
2107 .attr = {
2108 .name = "run_diagnostics",
2109 .mode = S_IWUSR,
2110 },
2111 .store = ipr_store_diagnostics
2112};
2113
2114/**
2115 * ipr_store_reset_adapter - Reset the adapter
2116 * @class_dev: class_device struct
2117 * @buf: buffer
2118 * @count: buffer size
2119 *
2120 * This function will reset the adapter.
2121 *
2122 * Return value:
2123 * count on success / other on failure
2124 **/
2125static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2126 const char *buf, size_t count)
2127{
2128 struct Scsi_Host *shost = class_to_shost(class_dev);
2129 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2130 unsigned long lock_flags;
2131 int result = count;
2132
2133 if (!capable(CAP_SYS_ADMIN))
2134 return -EACCES;
2135
2136 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2137 if (!ioa_cfg->in_reset_reload)
2138 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2139 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2140 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2141
2142 return result;
2143}
2144
2145static struct class_device_attribute ipr_ioa_reset_attr = {
2146 .attr = {
2147 .name = "reset_host",
2148 .mode = S_IWUSR,
2149 },
2150 .store = ipr_store_reset_adapter
2151};
2152
2153/**
2154 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2155 * @buf_len: buffer length
2156 *
2157 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2158 * list to use for microcode download
2159 *
2160 * Return value:
2161 * pointer to sglist / NULL on failure
2162 **/
2163static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2164{
2165 int sg_size, order, bsize_elem, num_elem, i, j;
2166 struct ipr_sglist *sglist;
2167 struct scatterlist *scatterlist;
2168 struct page *page;
2169
2170 /* Get the minimum size per scatter/gather element */
2171 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2172
2173 /* Get the actual size per element */
2174 order = get_order(sg_size);
2175
2176 /* Determine the actual number of bytes per element */
2177 bsize_elem = PAGE_SIZE * (1 << order);
2178
2179 /* Determine the actual number of sg entries needed */
2180 if (buf_len % bsize_elem)
2181 num_elem = (buf_len / bsize_elem) + 1;
2182 else
2183 num_elem = buf_len / bsize_elem;
2184
2185 /* Allocate a scatter/gather list for the DMA */
2186 sglist = kmalloc(sizeof(struct ipr_sglist) +
2187 (sizeof(struct scatterlist) * (num_elem - 1)),
2188 GFP_KERNEL);
2189
2190 if (sglist == NULL) {
2191 ipr_trace;
2192 return NULL;
2193 }
2194
2195 memset(sglist, 0, sizeof(struct ipr_sglist) +
2196 (sizeof(struct scatterlist) * (num_elem - 1)));
2197
2198 scatterlist = sglist->scatterlist;
2199
2200 sglist->order = order;
2201 sglist->num_sg = num_elem;
2202
2203 /* Allocate a bunch of sg elements */
2204 for (i = 0; i < num_elem; i++) {
2205 page = alloc_pages(GFP_KERNEL, order);
2206 if (!page) {
2207 ipr_trace;
2208
2209 /* Free up what we already allocated */
2210 for (j = i - 1; j >= 0; j--)
2211 __free_pages(scatterlist[j].page, order);
2212 kfree(sglist);
2213 return NULL;
2214 }
2215
2216 scatterlist[i].page = page;
2217 }
2218
2219 return sglist;
2220}
2221
2222/**
2223 * ipr_free_ucode_buffer - Frees a microcode download buffer
2224 * @p_dnld: scatter/gather list pointer
2225 *
2226 * Free a DMA'able ucode download buffer previously allocated with
2227 * ipr_alloc_ucode_buffer
2228 *
2229 * Return value:
2230 * nothing
2231 **/
2232static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2233{
2234 int i;
2235
2236 for (i = 0; i < sglist->num_sg; i++)
2237 __free_pages(sglist->scatterlist[i].page, sglist->order);
2238
2239 kfree(sglist);
2240}
2241
2242/**
2243 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2244 * @sglist: scatter/gather list pointer
2245 * @buffer: buffer pointer
2246 * @len: buffer length
2247 *
2248 * Copy a microcode image from a user buffer into a buffer allocated by
2249 * ipr_alloc_ucode_buffer
2250 *
2251 * Return value:
2252 * 0 on success / other on failure
2253 **/
2254static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2255 u8 *buffer, u32 len)
2256{
2257 int bsize_elem, i, result = 0;
2258 struct scatterlist *scatterlist;
2259 void *kaddr;
2260
2261 /* Determine the actual number of bytes per element */
2262 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2263
2264 scatterlist = sglist->scatterlist;
2265
2266 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2267 kaddr = kmap(scatterlist[i].page);
2268 memcpy(kaddr, buffer, bsize_elem);
2269 kunmap(scatterlist[i].page);
2270
2271 scatterlist[i].length = bsize_elem;
2272
2273 if (result != 0) {
2274 ipr_trace;
2275 return result;
2276 }
2277 }
2278
2279 if (len % bsize_elem) {
2280 kaddr = kmap(scatterlist[i].page);
2281 memcpy(kaddr, buffer, len % bsize_elem);
2282 kunmap(scatterlist[i].page);
2283
2284 scatterlist[i].length = len % bsize_elem;
2285 }
2286
2287 sglist->buffer_len = len;
2288 return result;
2289}
2290
2291/**
2292 * ipr_map_ucode_buffer - Map a microcode download buffer
2293 * @ipr_cmd: ipr command struct
2294 * @sglist: scatter/gather list
2295 * @len: total length of download buffer
2296 *
2297 * Maps a microcode download scatter/gather list for DMA and
2298 * builds the IOADL.
2299 *
2300 * Return value:
2301 * 0 on success / -EIO on failure
2302 **/
2303static int ipr_map_ucode_buffer(struct ipr_cmnd *ipr_cmd,
2304 struct ipr_sglist *sglist, int len)
2305{
2306 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2307 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2308 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2309 struct scatterlist *scatterlist = sglist->scatterlist;
2310 int i;
2311
2312 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, scatterlist,
2313 sglist->num_sg, DMA_TO_DEVICE);
2314
2315 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
2316 ioarcb->write_data_transfer_length = cpu_to_be32(len);
2317 ioarcb->write_ioadl_len =
2318 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2319
2320 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2321 ioadl[i].flags_and_data_len =
2322 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2323 ioadl[i].address =
2324 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2325 }
2326
2327 if (likely(ipr_cmd->dma_use_sg)) {
2328 ioadl[i-1].flags_and_data_len |=
2329 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2330 }
2331 else {
2332 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
2333 return -EIO;
2334 }
2335
2336 return 0;
2337}
2338
2339/**
2340 * ipr_store_update_fw - Update the firmware on the adapter
2341 * @class_dev: class_device struct
2342 * @buf: buffer
2343 * @count: buffer size
2344 *
2345 * This function will update the firmware on the adapter.
2346 *
2347 * Return value:
2348 * count on success / other on failure
2349 **/
2350static ssize_t ipr_store_update_fw(struct class_device *class_dev,
2351 const char *buf, size_t count)
2352{
2353 struct Scsi_Host *shost = class_to_shost(class_dev);
2354 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2355 struct ipr_ucode_image_header *image_hdr;
2356 const struct firmware *fw_entry;
2357 struct ipr_sglist *sglist;
2358 unsigned long lock_flags;
2359 char fname[100];
2360 char *src;
2361 int len, result, dnld_size;
2362
2363 if (!capable(CAP_SYS_ADMIN))
2364 return -EACCES;
2365
2366 len = snprintf(fname, 99, "%s", buf);
2367 fname[len-1] = '\0';
2368
2369 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
2370 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
2371 return -EIO;
2372 }
2373
2374 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
2375
2376 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
2377 (ioa_cfg->vpd_cbs->page3_data.card_type &&
2378 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
2379 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
2380 release_firmware(fw_entry);
2381 return -EINVAL;
2382 }
2383
2384 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
2385 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
2386 sglist = ipr_alloc_ucode_buffer(dnld_size);
2387
2388 if (!sglist) {
2389 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
2390 release_firmware(fw_entry);
2391 return -ENOMEM;
2392 }
2393
2394 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
2395
2396 if (result) {
2397 dev_err(&ioa_cfg->pdev->dev,
2398 "Microcode buffer copy to DMA buffer failed\n");
2399 ipr_free_ucode_buffer(sglist);
2400 release_firmware(fw_entry);
2401 return result;
2402 }
2403
2404 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2405
2406 if (ioa_cfg->ucode_sglist) {
2407 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2408 dev_err(&ioa_cfg->pdev->dev,
2409 "Microcode download already in progress\n");
2410 ipr_free_ucode_buffer(sglist);
2411 release_firmware(fw_entry);
2412 return -EIO;
2413 }
2414
2415 ioa_cfg->ucode_sglist = sglist;
2416 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2417 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2418 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2419
2420 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2421 ioa_cfg->ucode_sglist = NULL;
2422 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2423
2424 ipr_free_ucode_buffer(sglist);
2425 release_firmware(fw_entry);
2426
2427 return count;
2428}
2429
2430static struct class_device_attribute ipr_update_fw_attr = {
2431 .attr = {
2432 .name = "update_fw",
2433 .mode = S_IWUSR,
2434 },
2435 .store = ipr_store_update_fw
2436};
2437
2438static struct class_device_attribute *ipr_ioa_attrs[] = {
2439 &ipr_fw_version_attr,
2440 &ipr_log_level_attr,
2441 &ipr_diagnostics_attr,
2442 &ipr_ioa_reset_attr,
2443 &ipr_update_fw_attr,
2444 NULL,
2445};
2446
2447#ifdef CONFIG_SCSI_IPR_DUMP
2448/**
2449 * ipr_read_dump - Dump the adapter
2450 * @kobj: kobject struct
2451 * @buf: buffer
2452 * @off: offset
2453 * @count: buffer size
2454 *
2455 * Return value:
2456 * number of bytes printed to buffer
2457 **/
2458static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
2459 loff_t off, size_t count)
2460{
2461 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2462 struct Scsi_Host *shost = class_to_shost(cdev);
2463 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2464 struct ipr_dump *dump;
2465 unsigned long lock_flags = 0;
2466 char *src;
2467 int len;
2468 size_t rc = count;
2469
2470 if (!capable(CAP_SYS_ADMIN))
2471 return -EACCES;
2472
2473 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2474 dump = ioa_cfg->dump;
2475
2476 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
2477 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2478 return 0;
2479 }
2480 kref_get(&dump->kref);
2481 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2482
2483 if (off > dump->driver_dump.hdr.len) {
2484 kref_put(&dump->kref, ipr_release_dump);
2485 return 0;
2486 }
2487
2488 if (off + count > dump->driver_dump.hdr.len) {
2489 count = dump->driver_dump.hdr.len - off;
2490 rc = count;
2491 }
2492
2493 if (count && off < sizeof(dump->driver_dump)) {
2494 if (off + count > sizeof(dump->driver_dump))
2495 len = sizeof(dump->driver_dump) - off;
2496 else
2497 len = count;
2498 src = (u8 *)&dump->driver_dump + off;
2499 memcpy(buf, src, len);
2500 buf += len;
2501 off += len;
2502 count -= len;
2503 }
2504
2505 off -= sizeof(dump->driver_dump);
2506
2507 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
2508 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
2509 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
2510 else
2511 len = count;
2512 src = (u8 *)&dump->ioa_dump + off;
2513 memcpy(buf, src, len);
2514 buf += len;
2515 off += len;
2516 count -= len;
2517 }
2518
2519 off -= offsetof(struct ipr_ioa_dump, ioa_data);
2520
2521 while (count) {
2522 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
2523 len = PAGE_ALIGN(off) - off;
2524 else
2525 len = count;
2526 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
2527 src += off & ~PAGE_MASK;
2528 memcpy(buf, src, len);
2529 buf += len;
2530 off += len;
2531 count -= len;
2532 }
2533
2534 kref_put(&dump->kref, ipr_release_dump);
2535 return rc;
2536}
2537
2538/**
2539 * ipr_alloc_dump - Prepare for adapter dump
2540 * @ioa_cfg: ioa config struct
2541 *
2542 * Return value:
2543 * 0 on success / other on failure
2544 **/
2545static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
2546{
2547 struct ipr_dump *dump;
2548 unsigned long lock_flags = 0;
2549
2550 ENTER;
2551 dump = kmalloc(sizeof(struct ipr_dump), GFP_KERNEL);
2552
2553 if (!dump) {
2554 ipr_err("Dump memory allocation failed\n");
2555 return -ENOMEM;
2556 }
2557
2558 memset(dump, 0, sizeof(struct ipr_dump));
2559 kref_init(&dump->kref);
2560 dump->ioa_cfg = ioa_cfg;
2561
2562 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2563
2564 if (INACTIVE != ioa_cfg->sdt_state) {
2565 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2566 kfree(dump);
2567 return 0;
2568 }
2569
2570 ioa_cfg->dump = dump;
2571 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
2572 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
2573 ioa_cfg->dump_taken = 1;
2574 schedule_work(&ioa_cfg->work_q);
2575 }
2576 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2577
2578 LEAVE;
2579 return 0;
2580}
2581
2582/**
2583 * ipr_free_dump - Free adapter dump memory
2584 * @ioa_cfg: ioa config struct
2585 *
2586 * Return value:
2587 * 0 on success / other on failure
2588 **/
2589static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
2590{
2591 struct ipr_dump *dump;
2592 unsigned long lock_flags = 0;
2593
2594 ENTER;
2595
2596 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2597 dump = ioa_cfg->dump;
2598 if (!dump) {
2599 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2600 return 0;
2601 }
2602
2603 ioa_cfg->dump = NULL;
2604 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2605
2606 kref_put(&dump->kref, ipr_release_dump);
2607
2608 LEAVE;
2609 return 0;
2610}
2611
2612/**
2613 * ipr_write_dump - Setup dump state of adapter
2614 * @kobj: kobject struct
2615 * @buf: buffer
2616 * @off: offset
2617 * @count: buffer size
2618 *
2619 * Return value:
2620 * number of bytes printed to buffer
2621 **/
2622static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
2623 loff_t off, size_t count)
2624{
2625 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2626 struct Scsi_Host *shost = class_to_shost(cdev);
2627 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2628 int rc;
2629
2630 if (!capable(CAP_SYS_ADMIN))
2631 return -EACCES;
2632
2633 if (buf[0] == '1')
2634 rc = ipr_alloc_dump(ioa_cfg);
2635 else if (buf[0] == '0')
2636 rc = ipr_free_dump(ioa_cfg);
2637 else
2638 return -EINVAL;
2639
2640 if (rc)
2641 return rc;
2642 else
2643 return count;
2644}
2645
2646static struct bin_attribute ipr_dump_attr = {
2647 .attr = {
2648 .name = "dump",
2649 .mode = S_IRUSR | S_IWUSR,
2650 },
2651 .size = 0,
2652 .read = ipr_read_dump,
2653 .write = ipr_write_dump
2654};
2655#else
2656static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
2657#endif
2658
2659/**
2660 * ipr_change_queue_depth - Change the device's queue depth
2661 * @sdev: scsi device struct
2662 * @qdepth: depth to set
2663 *
2664 * Return value:
2665 * actual depth set
2666 **/
2667static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
2668{
2669 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
2670 return sdev->queue_depth;
2671}
2672
2673/**
2674 * ipr_change_queue_type - Change the device's queue type
2675 * @dsev: scsi device struct
2676 * @tag_type: type of tags to use
2677 *
2678 * Return value:
2679 * actual queue type set
2680 **/
2681static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
2682{
2683 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
2684 struct ipr_resource_entry *res;
2685 unsigned long lock_flags = 0;
2686
2687 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2688 res = (struct ipr_resource_entry *)sdev->hostdata;
2689
2690 if (res) {
2691 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
2692 /*
2693 * We don't bother quiescing the device here since the
2694 * adapter firmware does it for us.
2695 */
2696 scsi_set_tag_type(sdev, tag_type);
2697
2698 if (tag_type)
2699 scsi_activate_tcq(sdev, sdev->queue_depth);
2700 else
2701 scsi_deactivate_tcq(sdev, sdev->queue_depth);
2702 } else
2703 tag_type = 0;
2704 } else
2705 tag_type = 0;
2706
2707 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2708 return tag_type;
2709}
2710
2711/**
2712 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
2713 * @dev: device struct
2714 * @buf: buffer
2715 *
2716 * Return value:
2717 * number of bytes printed to buffer
2718 **/
2719static ssize_t ipr_show_adapter_handle(struct device *dev, char *buf)
2720{
2721 struct scsi_device *sdev = to_scsi_device(dev);
2722 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
2723 struct ipr_resource_entry *res;
2724 unsigned long lock_flags = 0;
2725 ssize_t len = -ENXIO;
2726
2727 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2728 res = (struct ipr_resource_entry *)sdev->hostdata;
2729 if (res)
2730 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
2731 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2732 return len;
2733}
2734
2735static struct device_attribute ipr_adapter_handle_attr = {
2736 .attr = {
2737 .name = "adapter_handle",
2738 .mode = S_IRUSR,
2739 },
2740 .show = ipr_show_adapter_handle
2741};
2742
2743static struct device_attribute *ipr_dev_attrs[] = {
2744 &ipr_adapter_handle_attr,
2745 NULL,
2746};
2747
2748/**
2749 * ipr_biosparam - Return the HSC mapping
2750 * @sdev: scsi device struct
2751 * @block_device: block device pointer
2752 * @capacity: capacity of the device
2753 * @parm: Array containing returned HSC values.
2754 *
2755 * This function generates the HSC parms that fdisk uses.
2756 * We want to make sure we return something that places partitions
2757 * on 4k boundaries for best performance with the IOA.
2758 *
2759 * Return value:
2760 * 0 on success
2761 **/
2762static int ipr_biosparam(struct scsi_device *sdev,
2763 struct block_device *block_device,
2764 sector_t capacity, int *parm)
2765{
2766 int heads, sectors;
2767 sector_t cylinders;
2768
2769 heads = 128;
2770 sectors = 32;
2771
2772 cylinders = capacity;
2773 sector_div(cylinders, (128 * 32));
2774
2775 /* return result */
2776 parm[0] = heads;
2777 parm[1] = sectors;
2778 parm[2] = cylinders;
2779
2780 return 0;
2781}
2782
2783/**
2784 * ipr_slave_destroy - Unconfigure a SCSI device
2785 * @sdev: scsi device struct
2786 *
2787 * Return value:
2788 * nothing
2789 **/
2790static void ipr_slave_destroy(struct scsi_device *sdev)
2791{
2792 struct ipr_resource_entry *res;
2793 struct ipr_ioa_cfg *ioa_cfg;
2794 unsigned long lock_flags = 0;
2795
2796 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
2797
2798 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2799 res = (struct ipr_resource_entry *) sdev->hostdata;
2800 if (res) {
2801 sdev->hostdata = NULL;
2802 res->sdev = NULL;
2803 }
2804 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2805}
2806
2807/**
2808 * ipr_slave_configure - Configure a SCSI device
2809 * @sdev: scsi device struct
2810 *
2811 * This function configures the specified scsi device.
2812 *
2813 * Return value:
2814 * 0 on success
2815 **/
2816static int ipr_slave_configure(struct scsi_device *sdev)
2817{
2818 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
2819 struct ipr_resource_entry *res;
2820 unsigned long lock_flags = 0;
2821
2822 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2823 res = sdev->hostdata;
2824 if (res) {
2825 if (ipr_is_af_dasd_device(res))
2826 sdev->type = TYPE_RAID;
2827 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res))
2828 sdev->scsi_level = 4;
2829 if (ipr_is_vset_device(res)) {
2830 sdev->timeout = IPR_VSET_RW_TIMEOUT;
2831 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
2832 }
2833 if (IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data))
2834 sdev->allow_restart = 1;
2835 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
2836 }
2837 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2838 return 0;
2839}
2840
2841/**
2842 * ipr_slave_alloc - Prepare for commands to a device.
2843 * @sdev: scsi device struct
2844 *
2845 * This function saves a pointer to the resource entry
2846 * in the scsi device struct if the device exists. We
2847 * can then use this pointer in ipr_queuecommand when
2848 * handling new commands.
2849 *
2850 * Return value:
2851 * 0 on success
2852 **/
2853static int ipr_slave_alloc(struct scsi_device *sdev)
2854{
2855 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
2856 struct ipr_resource_entry *res;
2857 unsigned long lock_flags;
2858
2859 sdev->hostdata = NULL;
2860
2861 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2862
2863 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2864 if ((res->cfgte.res_addr.bus == sdev->channel) &&
2865 (res->cfgte.res_addr.target == sdev->id) &&
2866 (res->cfgte.res_addr.lun == sdev->lun)) {
2867 res->sdev = sdev;
2868 res->add_to_ml = 0;
2869 res->in_erp = 0;
2870 sdev->hostdata = res;
2871 res->needs_sync_complete = 1;
2872 break;
2873 }
2874 }
2875
2876 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2877
2878 return 0;
2879}
2880
2881/**
2882 * ipr_eh_host_reset - Reset the host adapter
2883 * @scsi_cmd: scsi command struct
2884 *
2885 * Return value:
2886 * SUCCESS / FAILED
2887 **/
2888static int ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
2889{
2890 struct ipr_ioa_cfg *ioa_cfg;
2891 int rc;
2892
2893 ENTER;
2894 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
2895
2896 dev_err(&ioa_cfg->pdev->dev,
2897 "Adapter being reset as a result of error recovery.\n");
2898
2899 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2900 ioa_cfg->sdt_state = GET_DUMP;
2901
2902 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2903
2904 LEAVE;
2905 return rc;
2906}
2907
2908/**
2909 * ipr_eh_dev_reset - Reset the device
2910 * @scsi_cmd: scsi command struct
2911 *
2912 * This function issues a device reset to the affected device.
2913 * A LUN reset will be sent to the device first. If that does
2914 * not work, a target reset will be sent.
2915 *
2916 * Return value:
2917 * SUCCESS / FAILED
2918 **/
2919static int ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
2920{
2921 struct ipr_cmnd *ipr_cmd;
2922 struct ipr_ioa_cfg *ioa_cfg;
2923 struct ipr_resource_entry *res;
2924 struct ipr_cmd_pkt *cmd_pkt;
2925 u32 ioasc;
2926
2927 ENTER;
2928 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
2929 res = scsi_cmd->device->hostdata;
2930
2931 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
2932 return FAILED;
2933
2934 /*
2935 * If we are currently going through reset/reload, return failed. This will force the
2936 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
2937 * reset to complete
2938 */
2939 if (ioa_cfg->in_reset_reload)
2940 return FAILED;
2941 if (ioa_cfg->ioa_is_dead)
2942 return FAILED;
2943
2944 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
2945 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
2946 if (ipr_cmd->scsi_cmd)
2947 ipr_cmd->done = ipr_scsi_eh_done;
2948 }
2949 }
2950
2951 res->resetting_device = 1;
2952
2953 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
2954
2955 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
2956 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
2957 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
2958 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
2959
2960 ipr_sdev_err(scsi_cmd->device, "Resetting device\n");
2961 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
2962
2963 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
2964
2965 res->resetting_device = 0;
2966
2967 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2968
2969 LEAVE;
2970 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
2971}
2972
2973/**
2974 * ipr_bus_reset_done - Op done function for bus reset.
2975 * @ipr_cmd: ipr command struct
2976 *
2977 * This function is the op done function for a bus reset
2978 *
2979 * Return value:
2980 * none
2981 **/
2982static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
2983{
2984 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2985 struct ipr_resource_entry *res;
2986
2987 ENTER;
2988 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2989 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
2990 sizeof(res->cfgte.res_handle))) {
2991 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
2992 break;
2993 }
2994 }
2995
2996 /*
2997 * If abort has not completed, indicate the reset has, else call the
2998 * abort's done function to wake the sleeping eh thread
2999 */
3000 if (ipr_cmd->sibling->sibling)
3001 ipr_cmd->sibling->sibling = NULL;
3002 else
3003 ipr_cmd->sibling->done(ipr_cmd->sibling);
3004
3005 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3006 LEAVE;
3007}
3008
3009/**
3010 * ipr_abort_timeout - An abort task has timed out
3011 * @ipr_cmd: ipr command struct
3012 *
3013 * This function handles when an abort task times out. If this
3014 * happens we issue a bus reset since we have resources tied
3015 * up that must be freed before returning to the midlayer.
3016 *
3017 * Return value:
3018 * none
3019 **/
3020static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
3021{
3022 struct ipr_cmnd *reset_cmd;
3023 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3024 struct ipr_cmd_pkt *cmd_pkt;
3025 unsigned long lock_flags = 0;
3026
3027 ENTER;
3028 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3029 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
3030 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3031 return;
3032 }
3033
3034 ipr_sdev_err(ipr_cmd->u.sdev, "Abort timed out. Resetting bus\n");
3035 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3036 ipr_cmd->sibling = reset_cmd;
3037 reset_cmd->sibling = ipr_cmd;
3038 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
3039 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
3040 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3041 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3042 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
3043
3044 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3045 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3046 LEAVE;
3047}
3048
3049/**
3050 * ipr_cancel_op - Cancel specified op
3051 * @scsi_cmd: scsi command struct
3052 *
3053 * This function cancels specified op.
3054 *
3055 * Return value:
3056 * SUCCESS / FAILED
3057 **/
3058static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
3059{
3060 struct ipr_cmnd *ipr_cmd;
3061 struct ipr_ioa_cfg *ioa_cfg;
3062 struct ipr_resource_entry *res;
3063 struct ipr_cmd_pkt *cmd_pkt;
3064 u32 ioasc;
3065 int op_found = 0;
3066
3067 ENTER;
3068 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3069 res = scsi_cmd->device->hostdata;
3070
8fa728a2
JG		 3071 /* If we are currently going through reset/reload, return failed.
3072 * This will force the mid-layer to call ipr_eh_host_reset,
3073 * which will then go to sleep and wait for the reset to complete
3074 */
3075 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
3076 return FAILED;
1da177e4
LT		 3077 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
3078 return FAILED;
3079
3080 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3081 if (ipr_cmd->scsi_cmd == scsi_cmd) {
3082 ipr_cmd->done = ipr_scsi_eh_done;
3083 op_found = 1;
3084 break;
3085 }
3086 }
3087
3088 if (!op_found)
3089 return SUCCESS;
3090
3091 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3092 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
3093 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3094 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3095 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3096 ipr_cmd->u.sdev = scsi_cmd->device;
3097
3098 ipr_sdev_err(scsi_cmd->device, "Aborting command: %02X\n", scsi_cmd->cmnd[0]);
3099 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
3100 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3101
3102 /*
3103 * If the abort task timed out and we sent a bus reset, we will get
3104 * one the following responses to the abort
3105 */
3106 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
3107 ioasc = 0;
3108 ipr_trace;
3109 }
3110
3111 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3112 res->needs_sync_complete = 1;
3113
3114 LEAVE;
3115 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
3116}
3117
3118/**
3119 * ipr_eh_abort - Abort a single op
3120 * @scsi_cmd: scsi command struct
3121 *
3122 * Return value:
3123 * SUCCESS / FAILED
3124 **/
3125static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
3126{
8fa728a2
JG		 3127 unsigned long flags;
3128 int rc;
1da177e4
LT		 3129
3130 ENTER;
1da177e4 3131
8fa728a2
JG		 3132 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
3133 rc = ipr_cancel_op(scsi_cmd);
3134 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
1da177e4
LT		 3135
3136 LEAVE;
8fa728a2 3137 return rc;
1da177e4
LT		 3138}
3139
3140/**
3141 * ipr_handle_other_interrupt - Handle "other" interrupts
3142 * @ioa_cfg: ioa config struct
3143 * @int_reg: interrupt register
3144 *
3145 * Return value:
3146 * IRQ_NONE / IRQ_HANDLED
3147 **/
3148static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
3149 volatile u32 int_reg)
3150{
3151 irqreturn_t rc = IRQ_HANDLED;
3152
3153 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
3154 /* Mask the interrupt */
3155 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
3156
3157 /* Clear the interrupt */
3158 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
3159 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
3160
3161 list_del(&ioa_cfg->reset_cmd->queue);
3162 del_timer(&ioa_cfg->reset_cmd->timer);
3163 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
3164 } else {
3165 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
3166 ioa_cfg->ioa_unit_checked = 1;
3167 else
3168 dev_err(&ioa_cfg->pdev->dev,
3169 "Permanent IOA failure. 0x%08X\n", int_reg);
3170
3171 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3172 ioa_cfg->sdt_state = GET_DUMP;
3173
3174 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
3175 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3176 }
3177
3178 return rc;
3179}
3180
3181/**
3182 * ipr_isr - Interrupt service routine
3183 * @irq: irq number
3184 * @devp: pointer to ioa config struct
3185 * @regs: pt_regs struct
3186 *
3187 * Return value:
3188 * IRQ_NONE / IRQ_HANDLED
3189 **/
3190static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs)
3191{
3192 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
3193 unsigned long lock_flags = 0;
3194 volatile u32 int_reg, int_mask_reg;
3195 u32 ioasc;
3196 u16 cmd_index;
3197 struct ipr_cmnd *ipr_cmd;
3198 irqreturn_t rc = IRQ_NONE;
3199
3200 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3201
3202 /* If interrupts are disabled, ignore the interrupt */
3203 if (!ioa_cfg->allow_interrupts) {
3204 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3205 return IRQ_NONE;
3206 }
3207
3208 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
3209 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3210
3211 /* If an interrupt on the adapter did not occur, ignore it */
3212 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
3213 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3214 return IRQ_NONE;
3215 }
3216
3217 while (1) {
3218 ipr_cmd = NULL;
3219
3220 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
3221 ioa_cfg->toggle_bit) {
3222
3223 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
3224 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
3225
3226 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
3227 ioa_cfg->errors_logged++;
3228 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
3229
3230 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3231 ioa_cfg->sdt_state = GET_DUMP;
3232
3233 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3234 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3235 return IRQ_HANDLED;
3236 }
3237
3238 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
3239
3240 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3241
3242 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
3243
3244 list_del(&ipr_cmd->queue);
3245 del_timer(&ipr_cmd->timer);
3246 ipr_cmd->done(ipr_cmd);
3247
3248 rc = IRQ_HANDLED;
3249
3250 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
3251 ioa_cfg->hrrq_curr++;
3252 } else {
3253 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
3254 ioa_cfg->toggle_bit ^= 1u;
3255 }
3256 }
3257
3258 if (ipr_cmd != NULL) {
3259 /* Clear the PCI interrupt */
3260 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
3261 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3262 } else
3263 break;
3264 }
3265
3266 if (unlikely(rc == IRQ_NONE))
3267 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
3268
3269 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3270 return rc;
3271}
3272
3273/**
3274 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
3275 * @ioa_cfg: ioa config struct
3276 * @ipr_cmd: ipr command struct
3277 *
3278 * Return value:
3279 * 0 on success / -1 on failure
3280 **/
3281static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
3282 struct ipr_cmnd *ipr_cmd)
3283{
3284 int i;
3285 struct scatterlist *sglist;
3286 u32 length;
3287 u32 ioadl_flags = 0;
3288 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3289 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3290 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
3291
3292 length = scsi_cmd->request_bufflen;
3293
3294 if (length == 0)
3295 return 0;
3296
3297 if (scsi_cmd->use_sg) {
3298 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
3299 scsi_cmd->request_buffer,
3300 scsi_cmd->use_sg,
3301 scsi_cmd->sc_data_direction);
3302
3303 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3304 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3305 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3306 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3307 ioarcb->write_ioadl_len =
3308 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3309 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3310 ioadl_flags = IPR_IOADL_FLAGS_READ;
3311 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3312 ioarcb->read_ioadl_len =
3313 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3314 }
3315
3316 sglist = scsi_cmd->request_buffer;
3317
3318 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3319 ioadl[i].flags_and_data_len =
3320 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
3321 ioadl[i].address =
3322 cpu_to_be32(sg_dma_address(&sglist[i]));
3323 }
3324
3325 if (likely(ipr_cmd->dma_use_sg)) {
3326 ioadl[i-1].flags_and_data_len |=
3327 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3328 return 0;
3329 } else
3330 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
3331 } else {
3332 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3333 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3334 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3335 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3336 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3337 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3338 ioadl_flags = IPR_IOADL_FLAGS_READ;
3339 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3340 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3341 }
3342
3343 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
3344 scsi_cmd->request_buffer, length,
3345 scsi_cmd->sc_data_direction);
3346
3347 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
3348 ipr_cmd->dma_use_sg = 1;
3349 ioadl[0].flags_and_data_len =
3350 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
3351 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
3352 return 0;
3353 } else
3354 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
3355 }
3356
3357 return -1;
3358}
3359
3360/**
3361 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
3362 * @scsi_cmd: scsi command struct
3363 *
3364 * Return value:
3365 * task attributes
3366 **/
3367static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
3368{
3369 u8 tag[2];
3370 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
3371
3372 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
3373 switch (tag[0]) {
3374 case MSG_SIMPLE_TAG:
3375 rc = IPR_FLAGS_LO_SIMPLE_TASK;
3376 break;
3377 case MSG_HEAD_TAG:
3378 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
3379 break;
3380 case MSG_ORDERED_TAG:
3381 rc = IPR_FLAGS_LO_ORDERED_TASK;
3382 break;
3383 };
3384 }
3385
3386 return rc;
3387}
3388
3389/**
3390 * ipr_erp_done - Process completion of ERP for a device
3391 * @ipr_cmd: ipr command struct
3392 *
3393 * This function copies the sense buffer into the scsi_cmd
3394 * struct and pushes the scsi_done function.
3395 *
3396 * Return value:
3397 * nothing
3398 **/
3399static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
3400{
3401 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3402 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3403 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3404 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3405
3406 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3407 scsi_cmd->result |= (DID_ERROR << 16);
3408 ipr_sdev_err(scsi_cmd->device,
3409 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
3410 } else {
3411 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
3412 SCSI_SENSE_BUFFERSIZE);
3413 }
3414
3415 if (res) {
3416 res->needs_sync_complete = 1;
3417 res->in_erp = 0;
3418 }
3419 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3420 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3421 scsi_cmd->scsi_done(scsi_cmd);
3422}
3423
3424/**
3425 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
3426 * @ipr_cmd: ipr command struct
3427 *
3428 * Return value:
3429 * none
3430 **/
3431static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
3432{
3433 struct ipr_ioarcb *ioarcb;
3434 struct ipr_ioasa *ioasa;
3435
3436 ioarcb = &ipr_cmd->ioarcb;
3437 ioasa = &ipr_cmd->ioasa;
3438
3439 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
3440 ioarcb->write_data_transfer_length = 0;
3441 ioarcb->read_data_transfer_length = 0;
3442 ioarcb->write_ioadl_len = 0;
3443 ioarcb->read_ioadl_len = 0;
3444 ioasa->ioasc = 0;
3445 ioasa->residual_data_len = 0;
3446}
3447
3448/**
3449 * ipr_erp_request_sense - Send request sense to a device
3450 * @ipr_cmd: ipr command struct
3451 *
3452 * This function sends a request sense to a device as a result
3453 * of a check condition.
3454 *
3455 * Return value:
3456 * nothing
3457 **/
3458static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
3459{
3460 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3461 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3462
3463 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3464 ipr_erp_done(ipr_cmd);
3465 return;
3466 }
3467
3468 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3469
3470 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
3471 cmd_pkt->cdb[0] = REQUEST_SENSE;
3472 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
3473 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
3474 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
3475 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
3476
3477 ipr_cmd->ioadl[0].flags_and_data_len =
3478 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
3479 ipr_cmd->ioadl[0].address =
3480 cpu_to_be32(ipr_cmd->sense_buffer_dma);
3481
3482 ipr_cmd->ioarcb.read_ioadl_len =
3483 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3484 ipr_cmd->ioarcb.read_data_transfer_length =
3485 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
3486
3487 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
3488 IPR_REQUEST_SENSE_TIMEOUT * 2);
3489}
3490
3491/**
3492 * ipr_erp_cancel_all - Send cancel all to a device
3493 * @ipr_cmd: ipr command struct
3494 *
3495 * This function sends a cancel all to a device to clear the
3496 * queue. If we are running TCQ on the device, QERR is set to 1,
3497 * which means all outstanding ops have been dropped on the floor.
3498 * Cancel all will return them to us.
3499 *
3500 * Return value:
3501 * nothing
3502 **/
3503static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
3504{
3505 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3506 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3507 struct ipr_cmd_pkt *cmd_pkt;
3508
3509 res->in_erp = 1;
3510
3511 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3512
3513 if (!scsi_get_tag_type(scsi_cmd->device)) {
3514 ipr_erp_request_sense(ipr_cmd);
3515 return;
3516 }
3517
3518 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3519 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3520 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3521
3522 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
3523 IPR_CANCEL_ALL_TIMEOUT);
3524}
3525
3526/**
3527 * ipr_dump_ioasa - Dump contents of IOASA
3528 * @ioa_cfg: ioa config struct
3529 * @ipr_cmd: ipr command struct
3530 *
3531 * This function is invoked by the interrupt handler when ops
3532 * fail. It will log the IOASA if appropriate. Only called
3533 * for GPDD ops.
3534 *
3535 * Return value:
3536 * none
3537 **/
3538static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
3539 struct ipr_cmnd *ipr_cmd)
3540{
3541 int i;
3542 u16 data_len;
3543 u32 ioasc;
3544 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
3545 __be32 *ioasa_data = (__be32 *)ioasa;
3546 int error_index;
3547
3548 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
3549
3550 if (0 == ioasc)
3551 return;
3552
3553 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
3554 return;
3555
3556 error_index = ipr_get_error(ioasc);
3557
3558 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
3559 /* Don't log an error if the IOA already logged one */
3560 if (ioasa->ilid != 0)
3561 return;
3562
3563 if (ipr_error_table[error_index].log_ioasa == 0)
3564 return;
3565 }
3566
3567 ipr_sdev_err(ipr_cmd->scsi_cmd->device, "%s\n",
3568 ipr_error_table[error_index].error);
3569
3570 if ((ioasa->u.gpdd.end_state <= ARRAY_SIZE(ipr_gpdd_dev_end_states)) &&
3571 (ioasa->u.gpdd.bus_phase <= ARRAY_SIZE(ipr_gpdd_dev_bus_phases))) {
3572 ipr_sdev_err(ipr_cmd->scsi_cmd->device,
3573 "Device End state: %s Phase: %s\n",
3574 ipr_gpdd_dev_end_states[ioasa->u.gpdd.end_state],
3575 ipr_gpdd_dev_bus_phases[ioasa->u.gpdd.bus_phase]);
3576 }
3577
3578 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
3579 data_len = sizeof(struct ipr_ioasa);
3580 else
3581 data_len = be16_to_cpu(ioasa->ret_stat_len);
3582
3583 ipr_err("IOASA Dump:\n");
3584
3585 for (i = 0; i < data_len / 4; i += 4) {
3586 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
3587 be32_to_cpu(ioasa_data[i]),
3588 be32_to_cpu(ioasa_data[i+1]),
3589 be32_to_cpu(ioasa_data[i+2]),
3590 be32_to_cpu(ioasa_data[i+3]));
3591 }
3592}
3593
3594/**
3595 * ipr_gen_sense - Generate SCSI sense data from an IOASA
3596 * @ioasa: IOASA
3597 * @sense_buf: sense data buffer
3598 *
3599 * Return value:
3600 * none
3601 **/
3602static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
3603{
3604 u32 failing_lba;
3605 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
3606 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
3607 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
3608 u32 ioasc = be32_to_cpu(ioasa->ioasc);
3609
3610 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
3611
3612 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
3613 return;
3614
3615 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
3616
3617 if (ipr_is_vset_device(res) &&
3618 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
3619 ioasa->u.vset.failing_lba_hi != 0) {
3620 sense_buf[0] = 0x72;
3621 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
3622 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
3623 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
3624
3625 sense_buf[7] = 12;
3626 sense_buf[8] = 0;
3627 sense_buf[9] = 0x0A;
3628 sense_buf[10] = 0x80;
3629
3630 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
3631
3632 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
3633 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
3634 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
3635 sense_buf[15] = failing_lba & 0x000000ff;
3636
3637 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
3638
3639 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
3640 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
3641 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
3642 sense_buf[19] = failing_lba & 0x000000ff;
3643 } else {
3644 sense_buf[0] = 0x70;
3645 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
3646 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
3647 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
3648
3649 /* Illegal request */
3650 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
3651 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
3652 sense_buf[7] = 10; /* additional length */
3653
3654 /* IOARCB was in error */
3655 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
3656 sense_buf[15] = 0xC0;
3657 else /* Parameter data was invalid */
3658 sense_buf[15] = 0x80;
3659
3660 sense_buf[16] =
3661 ((IPR_FIELD_POINTER_MASK &
3662 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
3663 sense_buf[17] =
3664 (IPR_FIELD_POINTER_MASK &
3665 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
3666 } else {
3667 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
3668 if (ipr_is_vset_device(res))
3669 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
3670 else
3671 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
3672
3673 sense_buf[0] |= 0x80; /* Or in the Valid bit */
3674 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
3675 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
3676 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
3677 sense_buf[6] = failing_lba & 0x000000ff;
3678 }
3679
3680 sense_buf[7] = 6; /* additional length */
3681 }
3682 }
3683}
3684
3685/**
3686 * ipr_erp_start - Process an error response for a SCSI op
3687 * @ioa_cfg: ioa config struct
3688 * @ipr_cmd: ipr command struct
3689 *
3690 * This function determines whether or not to initiate ERP
3691 * on the affected device.
3692 *
3693 * Return value:
3694 * nothing
3695 **/
3696static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
3697 struct ipr_cmnd *ipr_cmd)
3698{
3699 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3700 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3701 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3702
3703 if (!res) {
3704 ipr_scsi_eh_done(ipr_cmd);
3705 return;
3706 }
3707
3708 if (ipr_is_gscsi(res))
3709 ipr_dump_ioasa(ioa_cfg, ipr_cmd);
3710 else
3711 ipr_gen_sense(ipr_cmd);
3712
3713 switch (ioasc & IPR_IOASC_IOASC_MASK) {
3714 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
3715 scsi_cmd->result |= (DID_IMM_RETRY << 16);
3716 break;
3717 case IPR_IOASC_IR_RESOURCE_HANDLE:
3718 scsi_cmd->result |= (DID_NO_CONNECT << 16);
3719 break;
3720 case IPR_IOASC_HW_SEL_TIMEOUT:
3721 scsi_cmd->result |= (DID_NO_CONNECT << 16);
3722 res->needs_sync_complete = 1;
3723 break;
3724 case IPR_IOASC_SYNC_REQUIRED:
3725 if (!res->in_erp)
3726 res->needs_sync_complete = 1;
3727 scsi_cmd->result |= (DID_IMM_RETRY << 16);
3728 break;
3729 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
3730 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
3731 break;
3732 case IPR_IOASC_BUS_WAS_RESET:
3733 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
3734 /*
3735 * Report the bus reset and ask for a retry. The device
3736 * will give CC/UA the next command.
3737 */
3738 if (!res->resetting_device)
3739 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
3740 scsi_cmd->result |= (DID_ERROR << 16);
3741 res->needs_sync_complete = 1;
3742 break;
3743 case IPR_IOASC_HW_DEV_BUS_STATUS:
3744 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
3745 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
3746 ipr_erp_cancel_all(ipr_cmd);
3747 return;
3748 }
3749 res->needs_sync_complete = 1;
3750 break;
3751 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
3752 break;
3753 default:
3754 scsi_cmd->result |= (DID_ERROR << 16);
3755 if (!ipr_is_vset_device(res))
3756 res->needs_sync_complete = 1;
3757 break;
3758 }
3759
3760 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3761 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3762 scsi_cmd->scsi_done(scsi_cmd);
3763}
3764
3765/**
3766 * ipr_scsi_done - mid-layer done function
3767 * @ipr_cmd: ipr command struct
3768 *
3769 * This function is invoked by the interrupt handler for
3770 * ops generated by the SCSI mid-layer
3771 *
3772 * Return value:
3773 * none
3774 **/
3775static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
3776{
3777 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3778 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3779 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3780
3781 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
3782
3783 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
3784 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3785 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3786 scsi_cmd->scsi_done(scsi_cmd);
3787 } else
3788 ipr_erp_start(ioa_cfg, ipr_cmd);
3789}
3790
3791/**
3792 * ipr_save_ioafp_mode_select - Save adapters mode select data
3793 * @ioa_cfg: ioa config struct
3794 * @scsi_cmd: scsi command struct
3795 *
3796 * This function saves mode select data for the adapter to
3797 * use following an adapter reset.
3798 *
3799 * Return value:
3800 * 0 on success / SCSI_MLQUEUE_HOST_BUSY on failure
3801 **/
3802static int ipr_save_ioafp_mode_select(struct ipr_ioa_cfg *ioa_cfg,
3803 struct scsi_cmnd *scsi_cmd)
3804{
3805 if (!ioa_cfg->saved_mode_pages) {
3806 ioa_cfg->saved_mode_pages = kmalloc(sizeof(struct ipr_mode_pages),
3807 GFP_ATOMIC);
3808 if (!ioa_cfg->saved_mode_pages) {
3809 dev_err(&ioa_cfg->pdev->dev,
3810 "IOA mode select buffer allocation failed\n");
3811 return SCSI_MLQUEUE_HOST_BUSY;
3812 }
3813 }
3814
3815 memcpy(ioa_cfg->saved_mode_pages, scsi_cmd->buffer, scsi_cmd->cmnd[4]);
3816 ioa_cfg->saved_mode_page_len = scsi_cmd->cmnd[4];
3817 return 0;
3818}
3819
3820/**
3821 * ipr_queuecommand - Queue a mid-layer request
3822 * @scsi_cmd: scsi command struct
3823 * @done: done function
3824 *
3825 * This function queues a request generated by the mid-layer.
3826 *
3827 * Return value:
3828 * 0 on success
3829 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
3830 * SCSI_MLQUEUE_HOST_BUSY if host is busy
3831 **/
3832static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
3833 void (*done) (struct scsi_cmnd *))
3834{
3835 struct ipr_ioa_cfg *ioa_cfg;
3836 struct ipr_resource_entry *res;
3837 struct ipr_ioarcb *ioarcb;
3838 struct ipr_cmnd *ipr_cmd;
3839 int rc = 0;
3840
3841 scsi_cmd->scsi_done = done;
3842 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3843 res = scsi_cmd->device->hostdata;
3844 scsi_cmd->result = (DID_OK << 16);
3845
3846 /*
3847 * We are currently blocking all devices due to a host reset
3848 * We have told the host to stop giving us new requests, but
3849 * ERP ops don't count. FIXME
3850 */
3851 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
3852 return SCSI_MLQUEUE_HOST_BUSY;
3853
3854 /*
3855 * FIXME - Create scsi_set_host_offline interface
3856 * and the ioa_is_dead check can be removed
3857 */
3858 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
3859 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
3860 scsi_cmd->result = (DID_NO_CONNECT << 16);
3861 scsi_cmd->scsi_done(scsi_cmd);
3862 return 0;
3863 }
3864
3865 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3866 ioarcb = &ipr_cmd->ioarcb;
3867 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
3868
3869 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
3870 ipr_cmd->scsi_cmd = scsi_cmd;
3871 ioarcb->res_handle = res->cfgte.res_handle;
3872 ipr_cmd->done = ipr_scsi_done;
3873 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
3874
3875 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
3876 if (scsi_cmd->underflow == 0)
3877 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
3878
3879 if (res->needs_sync_complete) {
3880 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
3881 res->needs_sync_complete = 0;
3882 }
3883
3884 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
3885 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
3886 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
3887 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
3888 }
3889
3890 if (scsi_cmd->cmnd[0] >= 0xC0 &&
3891 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
3892 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
3893
3894 if (ipr_is_ioa_resource(res) && scsi_cmd->cmnd[0] == MODE_SELECT)
3895 rc = ipr_save_ioafp_mode_select(ioa_cfg, scsi_cmd);
3896
3897 if (likely(rc == 0))
3898 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
3899
3900 if (likely(rc == 0)) {
3901 mb();
3902 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
3903 ioa_cfg->regs.ioarrin_reg);
3904 } else {
3905 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3906 return SCSI_MLQUEUE_HOST_BUSY;
3907 }
3908
3909 return 0;
3910}
3911
3912/**
3913 * ipr_info - Get information about the card/driver
3914 * @scsi_host: scsi host struct
3915 *
3916 * Return value:
3917 * pointer to buffer with description string
3918 **/
3919static const char * ipr_ioa_info(struct Scsi_Host *host)
3920{
3921 static char buffer[512];
3922 struct ipr_ioa_cfg *ioa_cfg;
3923 unsigned long lock_flags = 0;
3924
3925 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
3926
3927 spin_lock_irqsave(host->host_lock, lock_flags);
3928 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
3929 spin_unlock_irqrestore(host->host_lock, lock_flags);
3930
3931 return buffer;
3932}
3933
3934static struct scsi_host_template driver_template = {
3935 .module = THIS_MODULE,
3936 .name = "IPR",
3937 .info = ipr_ioa_info,
3938 .queuecommand = ipr_queuecommand,
3939 .eh_abort_handler = ipr_eh_abort,
3940 .eh_device_reset_handler = ipr_eh_dev_reset,
3941 .eh_host_reset_handler = ipr_eh_host_reset,
3942 .slave_alloc = ipr_slave_alloc,
3943 .slave_configure = ipr_slave_configure,
3944 .slave_destroy = ipr_slave_destroy,
3945 .change_queue_depth = ipr_change_queue_depth,
3946 .change_queue_type = ipr_change_queue_type,
3947 .bios_param = ipr_biosparam,
3948 .can_queue = IPR_MAX_COMMANDS,
3949 .this_id = -1,
3950 .sg_tablesize = IPR_MAX_SGLIST,
3951 .max_sectors = IPR_IOA_MAX_SECTORS,
3952 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
3953 .use_clustering = ENABLE_CLUSTERING,
3954 .shost_attrs = ipr_ioa_attrs,
3955 .sdev_attrs = ipr_dev_attrs,
3956 .proc_name = IPR_NAME
3957};
3958
3959#ifdef CONFIG_PPC_PSERIES
3960static const u16 ipr_blocked_processors[] = {
3961 PV_NORTHSTAR,
3962 PV_PULSAR,
3963 PV_POWER4,
3964 PV_ICESTAR,
3965 PV_SSTAR,
3966 PV_POWER4p,
3967 PV_630,
3968 PV_630p
3969};
3970
3971/**
3972 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
3973 * @ioa_cfg: ioa cfg struct
3974 *
3975 * Adapters that use Gemstone revision < 3.1 do not work reliably on
3976 * certain pSeries hardware. This function determines if the given
3977 * adapter is in one of these confgurations or not.
3978 *
3979 * Return value:
3980 * 1 if adapter is not supported / 0 if adapter is supported
3981 **/
3982static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
3983{
3984 u8 rev_id;
3985 int i;
3986
3987 if (ioa_cfg->type == 0x5702) {
3988 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
3989 &rev_id) == PCIBIOS_SUCCESSFUL) {
3990 if (rev_id < 4) {
3991 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
3992 if (__is_processor(ipr_blocked_processors[i]))
3993 return 1;
3994 }
3995 }
3996 }
3997 }
3998 return 0;
3999}
4000#else
4001#define ipr_invalid_adapter(ioa_cfg) 0
4002#endif
4003
4004/**
4005 * ipr_ioa_bringdown_done - IOA bring down completion.
4006 * @ipr_cmd: ipr command struct
4007 *
4008 * This function processes the completion of an adapter bring down.
4009 * It wakes any reset sleepers.
4010 *
4011 * Return value:
4012 * IPR_RC_JOB_RETURN
4013 **/
4014static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
4015{
4016 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4017
4018 ENTER;
4019 ioa_cfg->in_reset_reload = 0;
4020 ioa_cfg->reset_retries = 0;
4021 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4022 wake_up_all(&ioa_cfg->reset_wait_q);
4023
4024 spin_unlock_irq(ioa_cfg->host->host_lock);
4025 scsi_unblock_requests(ioa_cfg->host);
4026 spin_lock_irq(ioa_cfg->host->host_lock);
4027 LEAVE;
4028
4029 return IPR_RC_JOB_RETURN;
4030}
4031
4032/**
4033 * ipr_ioa_reset_done - IOA reset completion.
4034 * @ipr_cmd: ipr command struct
4035 *
4036 * This function processes the completion of an adapter reset.
4037 * It schedules any necessary mid-layer add/removes and
4038 * wakes any reset sleepers.
4039 *
4040 * Return value:
4041 * IPR_RC_JOB_RETURN
4042 **/
4043static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
4044{
4045 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4046 struct ipr_resource_entry *res;
4047 struct ipr_hostrcb *hostrcb, *temp;
4048 int i = 0;
4049
4050 ENTER;
4051 ioa_cfg->in_reset_reload = 0;
4052 ioa_cfg->allow_cmds = 1;
4053 ioa_cfg->reset_cmd = NULL;
4054
4055 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4056 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
4057 ipr_trace;
4058 break;
4059 }
4060 }
4061 schedule_work(&ioa_cfg->work_q);
4062
4063 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
4064 list_del(&hostrcb->queue);
4065 if (i++ < IPR_NUM_LOG_HCAMS)
4066 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
4067 else
4068 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
4069 }
4070
4071 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
4072
4073 ioa_cfg->reset_retries = 0;
4074 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4075 wake_up_all(&ioa_cfg->reset_wait_q);
4076
4077 spin_unlock_irq(ioa_cfg->host->host_lock);
4078 scsi_unblock_requests(ioa_cfg->host);
4079 spin_lock_irq(ioa_cfg->host->host_lock);
4080
4081 if (!ioa_cfg->allow_cmds)
4082 scsi_block_requests(ioa_cfg->host);
4083
4084 LEAVE;
4085 return IPR_RC_JOB_RETURN;
4086}
4087
4088/**
4089 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
4090 * @supported_dev: supported device struct
4091 * @vpids: vendor product id struct
4092 *
4093 * Return value:
4094 * none
4095 **/
4096static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
4097 struct ipr_std_inq_vpids *vpids)
4098{
4099 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
4100 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
4101 supported_dev->num_records = 1;
4102 supported_dev->data_length =
4103 cpu_to_be16(sizeof(struct ipr_supported_device));
4104 supported_dev->reserved = 0;
4105}
4106
4107/**
4108 * ipr_set_supported_devs - Send Set Supported Devices for a device
4109 * @ipr_cmd: ipr command struct
4110 *
4111 * This function send a Set Supported Devices to the adapter
4112 *
4113 * Return value:
4114 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4115 **/
4116static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
4117{
4118 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4119 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
4120 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4121 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4122 struct ipr_resource_entry *res = ipr_cmd->u.res;
4123
4124 ipr_cmd->job_step = ipr_ioa_reset_done;
4125
4126 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
4127 if (!ipr_is_af_dasd_device(res))
4128 continue;
4129
4130 ipr_cmd->u.res = res;
4131 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
4132
4133 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4134 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4135 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4136
4137 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
4138 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
4139 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
4140
4141 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
4142 sizeof(struct ipr_supported_device));
4143 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
4144 offsetof(struct ipr_misc_cbs, supp_dev));
4145 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4146 ioarcb->write_data_transfer_length =
4147 cpu_to_be32(sizeof(struct ipr_supported_device));
4148
4149 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
4150 IPR_SET_SUP_DEVICE_TIMEOUT);
4151
4152 ipr_cmd->job_step = ipr_set_supported_devs;
4153 return IPR_RC_JOB_RETURN;
4154 }
4155
4156 return IPR_RC_JOB_CONTINUE;
4157}
4158
4159/**
4160 * ipr_get_mode_page - Locate specified mode page
4161 * @mode_pages: mode page buffer
4162 * @page_code: page code to find
4163 * @len: minimum required length for mode page
4164 *
4165 * Return value:
4166 * pointer to mode page / NULL on failure
4167 **/
4168static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
4169 u32 page_code, u32 len)
4170{
4171 struct ipr_mode_page_hdr *mode_hdr;
4172 u32 page_length;
4173 u32 length;
4174
4175 if (!mode_pages || (mode_pages->hdr.length == 0))
4176 return NULL;
4177
4178 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
4179 mode_hdr = (struct ipr_mode_page_hdr *)
4180 (mode_pages->data + mode_pages->hdr.block_desc_len);
4181
4182 while (length) {
4183 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
4184 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
4185 return mode_hdr;
4186 break;
4187 } else {
4188 page_length = (sizeof(struct ipr_mode_page_hdr) +
4189 mode_hdr->page_length);
4190 length -= page_length;
4191 mode_hdr = (struct ipr_mode_page_hdr *)
4192 ((unsigned long)mode_hdr + page_length);
4193 }
4194 }
4195 return NULL;
4196}
4197
4198/**
4199 * ipr_check_term_power - Check for term power errors
4200 * @ioa_cfg: ioa config struct
4201 * @mode_pages: IOAFP mode pages buffer
4202 *
4203 * Check the IOAFP's mode page 28 for term power errors
4204 *
4205 * Return value:
4206 * nothing
4207 **/
4208static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
4209 struct ipr_mode_pages *mode_pages)
4210{
4211 int i;
4212 int entry_length;
4213 struct ipr_dev_bus_entry *bus;
4214 struct ipr_mode_page28 *mode_page;
4215
4216 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4217 sizeof(struct ipr_mode_page28));
4218
4219 entry_length = mode_page->entry_length;
4220
4221 bus = mode_page->bus;
4222
4223 for (i = 0; i < mode_page->num_entries; i++) {
4224 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
4225 dev_err(&ioa_cfg->pdev->dev,
4226 "Term power is absent on scsi bus %d\n",
4227 bus->res_addr.bus);
4228 }
4229
4230 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
4231 }
4232}
4233
4234/**
4235 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
4236 * @ioa_cfg: ioa config struct
4237 *
4238 * Looks through the config table checking for SES devices. If
4239 * the SES device is in the SES table indicating a maximum SCSI
4240 * bus speed, the speed is limited for the bus.
4241 *
4242 * Return value:
4243 * none
4244 **/
4245static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
4246{
4247 u32 max_xfer_rate;
4248 int i;
4249
4250 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
4251 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
4252 ioa_cfg->bus_attr[i].bus_width);
4253
4254 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
4255 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
4256 }
4257}
4258
4259/**
4260 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
4261 * @ioa_cfg: ioa config struct
4262 * @mode_pages: mode page 28 buffer
4263 *
4264 * Updates mode page 28 based on driver configuration
4265 *
4266 * Return value:
4267 * none
4268 **/
4269static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
4270 struct ipr_mode_pages *mode_pages)
4271{
4272 int i, entry_length;
4273 struct ipr_dev_bus_entry *bus;
4274 struct ipr_bus_attributes *bus_attr;
4275 struct ipr_mode_page28 *mode_page;
4276
4277 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4278 sizeof(struct ipr_mode_page28));
4279
4280 entry_length = mode_page->entry_length;
4281
4282 /* Loop for each device bus entry */
4283 for (i = 0, bus = mode_page->bus;
4284 i < mode_page->num_entries;
4285 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
4286 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
4287 dev_err(&ioa_cfg->pdev->dev,
4288 "Invalid resource address reported: 0x%08X\n",
4289 IPR_GET_PHYS_LOC(bus->res_addr));
4290 continue;
4291 }
4292
4293 bus_attr = &ioa_cfg->bus_attr[i];
4294 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
4295 bus->bus_width = bus_attr->bus_width;
4296 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
4297 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
4298 if (bus_attr->qas_enabled)
4299 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
4300 else
4301 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
4302 }
4303}
4304
4305/**
4306 * ipr_build_mode_select - Build a mode select command
4307 * @ipr_cmd: ipr command struct
4308 * @res_handle: resource handle to send command to
4309 * @parm: Byte 2 of Mode Sense command
4310 * @dma_addr: DMA buffer address
4311 * @xfer_len: data transfer length
4312 *
4313 * Return value:
4314 * none
4315 **/
4316static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
4317 __be32 res_handle, u8 parm, u32 dma_addr,
4318 u8 xfer_len)
4319{
4320 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4321 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4322
4323 ioarcb->res_handle = res_handle;
4324 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4325 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4326 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
4327 ioarcb->cmd_pkt.cdb[1] = parm;
4328 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4329
4330 ioadl->flags_and_data_len =
4331 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
4332 ioadl->address = cpu_to_be32(dma_addr);
4333 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4334 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
4335}
4336
4337/**
4338 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
4339 * @ipr_cmd: ipr command struct
4340 *
4341 * This function sets up the SCSI bus attributes and sends
4342 * a Mode Select for Page 28 to activate them.
4343 *
4344 * Return value:
4345 * IPR_RC_JOB_RETURN
4346 **/
4347static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
4348{
4349 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4350 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
4351 int length;
4352
4353 ENTER;
4354 if (ioa_cfg->saved_mode_pages) {
4355 memcpy(mode_pages, ioa_cfg->saved_mode_pages,
4356 ioa_cfg->saved_mode_page_len);
4357 length = ioa_cfg->saved_mode_page_len;
4358 } else {
4359 ipr_scsi_bus_speed_limit(ioa_cfg);
4360 ipr_check_term_power(ioa_cfg, mode_pages);
4361 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
4362 length = mode_pages->hdr.length + 1;
4363 mode_pages->hdr.length = 0;
4364 }
4365
4366 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
4367 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
4368 length);
4369
4370 ipr_cmd->job_step = ipr_set_supported_devs;
4371 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
4372 struct ipr_resource_entry, queue);
4373
4374 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4375
4376 LEAVE;
4377 return IPR_RC_JOB_RETURN;
4378}
4379
4380/**
4381 * ipr_build_mode_sense - Builds a mode sense command
4382 * @ipr_cmd: ipr command struct
4383 * @res: resource entry struct
4384 * @parm: Byte 2 of mode sense command
4385 * @dma_addr: DMA address of mode sense buffer
4386 * @xfer_len: Size of DMA buffer
4387 *
4388 * Return value:
4389 * none
4390 **/
4391static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
4392 __be32 res_handle,
4393 u8 parm, u32 dma_addr, u8 xfer_len)
4394{
4395 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4396 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4397
4398 ioarcb->res_handle = res_handle;
4399 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
4400 ioarcb->cmd_pkt.cdb[2] = parm;
4401 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4402 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4403
4404 ioadl->flags_and_data_len =
4405 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
4406 ioadl->address = cpu_to_be32(dma_addr);
4407 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4408 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
4409}
4410
4411/**
4412 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
4413 * @ipr_cmd: ipr command struct
4414 *
4415 * This function send a Page 28 mode sense to the IOA to
4416 * retrieve SCSI bus attributes.
4417 *
4418 * Return value:
4419 * IPR_RC_JOB_RETURN
4420 **/
4421static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
4422{
4423 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4424
4425 ENTER;
4426 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
4427 0x28, ioa_cfg->vpd_cbs_dma +
4428 offsetof(struct ipr_misc_cbs, mode_pages),
4429 sizeof(struct ipr_mode_pages));
4430
4431 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
4432
4433 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4434
4435 LEAVE;
4436 return IPR_RC_JOB_RETURN;
4437}
4438
4439/**
4440 * ipr_init_res_table - Initialize the resource table
4441 * @ipr_cmd: ipr command struct
4442 *
4443 * This function looks through the existing resource table, comparing
4444 * it with the config table. This function will take care of old/new
4445 * devices and schedule adding/removing them from the mid-layer
4446 * as appropriate.
4447 *
4448 * Return value:
4449 * IPR_RC_JOB_CONTINUE
4450 **/
4451static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
4452{
4453 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4454 struct ipr_resource_entry *res, *temp;
4455 struct ipr_config_table_entry *cfgte;
4456 int found, i;
4457 LIST_HEAD(old_res);
4458
4459 ENTER;
4460 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
4461 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
4462
4463 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
4464 list_move_tail(&res->queue, &old_res);
4465
4466 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
4467 cfgte = &ioa_cfg->cfg_table->dev[i];
4468 found = 0;
4469
4470 list_for_each_entry_safe(res, temp, &old_res, queue) {
4471 if (!memcmp(&res->cfgte.res_addr,
4472 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
4473 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4474 found = 1;
4475 break;
4476 }
4477 }
4478
4479 if (!found) {
4480 if (list_empty(&ioa_cfg->free_res_q)) {
4481 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
4482 break;
4483 }
4484
4485 found = 1;
4486 res = list_entry(ioa_cfg->free_res_q.next,
4487 struct ipr_resource_entry, queue);
4488 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4489 ipr_init_res_entry(res);
4490 res->add_to_ml = 1;
4491 }
4492
4493 if (found)
4494 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
4495 }
4496
4497 list_for_each_entry_safe(res, temp, &old_res, queue) {
4498 if (res->sdev) {
4499 res->del_from_ml = 1;
4500 res->sdev->hostdata = NULL;
4501 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4502 } else {
4503 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
4504 }
4505 }
4506
4507 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
4508
4509 LEAVE;
4510 return IPR_RC_JOB_CONTINUE;
4511}
4512
4513/**
4514 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
4515 * @ipr_cmd: ipr command struct
4516 *
4517 * This function sends a Query IOA Configuration command
4518 * to the adapter to retrieve the IOA configuration table.
4519 *
4520 * Return value:
4521 * IPR_RC_JOB_RETURN
4522 **/
4523static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
4524{
4525 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4526 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4527 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4528 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
4529
4530 ENTER;
4531 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
4532 ucode_vpd->major_release, ucode_vpd->card_type,
4533 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
4534 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4535 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4536
4537 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
4538 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
4539 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
4540
4541 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4542 ioarcb->read_data_transfer_length =
4543 cpu_to_be32(sizeof(struct ipr_config_table));
4544
4545 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
4546 ioadl->flags_and_data_len =
4547 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
4548
4549 ipr_cmd->job_step = ipr_init_res_table;
4550
4551 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4552
4553 LEAVE;
4554 return IPR_RC_JOB_RETURN;
4555}
4556
4557/**
4558 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
4559 * @ipr_cmd: ipr command struct
4560 *
4561 * This utility function sends an inquiry to the adapter.
4562 *
4563 * Return value:
4564 * none
4565 **/
4566static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
4567 u32 dma_addr, u8 xfer_len)
4568{
4569 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4570 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4571
4572 ENTER;
4573 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4574 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4575
4576 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
4577 ioarcb->cmd_pkt.cdb[1] = flags;
4578 ioarcb->cmd_pkt.cdb[2] = page;
4579 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4580
4581 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4582 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
4583
4584 ioadl->address = cpu_to_be32(dma_addr);
4585 ioadl->flags_and_data_len =
4586 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
4587
4588 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4589 LEAVE;
4590}
4591
4592/**
4593 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
4594 * @ipr_cmd: ipr command struct
4595 *
4596 * This function sends a Page 3 inquiry to the adapter
4597 * to retrieve software VPD information.
4598 *
4599 * Return value:
4600 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4601 **/
4602static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
4603{
4604 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4605 char type[5];
4606
4607 ENTER;
4608
4609 /* Grab the type out of the VPD and store it away */
4610 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
4611 type[4] = '\0';
4612 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
4613
4614 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
4615
4616 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
4617 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
4618 sizeof(struct ipr_inquiry_page3));
4619
4620 LEAVE;
4621 return IPR_RC_JOB_RETURN;
4622}
4623
4624/**
4625 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
4626 * @ipr_cmd: ipr command struct
4627 *
4628 * This function sends a standard inquiry to the adapter.
4629 *
4630 * Return value:
4631 * IPR_RC_JOB_RETURN
4632 **/
4633static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
4634{
4635 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4636
4637 ENTER;
4638 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
4639
4640 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
4641 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
4642 sizeof(struct ipr_ioa_vpd));
4643
4644 LEAVE;
4645 return IPR_RC_JOB_RETURN;
4646}
4647
4648/**
4649 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
4650 * @ipr_cmd: ipr command struct
4651 *
4652 * This function send an Identify Host Request Response Queue
4653 * command to establish the HRRQ with the adapter.
4654 *
4655 * Return value:
4656 * IPR_RC_JOB_RETURN
4657 **/
4658static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
4659{
4660 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4661 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4662
4663 ENTER;
4664 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
4665
4666 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
4667 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4668
4669 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4670 ioarcb->cmd_pkt.cdb[2] =
4671 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
4672 ioarcb->cmd_pkt.cdb[3] =
4673 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
4674 ioarcb->cmd_pkt.cdb[4] =
4675 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
4676 ioarcb->cmd_pkt.cdb[5] =
4677 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
4678 ioarcb->cmd_pkt.cdb[7] =
4679 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
4680 ioarcb->cmd_pkt.cdb[8] =
4681 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
4682
4683 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
4684
4685 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4686
4687 LEAVE;
4688 return IPR_RC_JOB_RETURN;
4689}
4690
4691/**
4692 * ipr_reset_timer_done - Adapter reset timer function
4693 * @ipr_cmd: ipr command struct
4694 *
4695 * Description: This function is used in adapter reset processing
4696 * for timing events. If the reset_cmd pointer in the IOA
4697 * config struct is not this adapter's we are doing nested
4698 * resets and fail_all_ops will take care of freeing the
4699 * command block.
4700 *
4701 * Return value:
4702 * none
4703 **/
4704static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
4705{
4706 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4707 unsigned long lock_flags = 0;
4708
4709 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4710
4711 if (ioa_cfg->reset_cmd == ipr_cmd) {
4712 list_del(&ipr_cmd->queue);
4713 ipr_cmd->done(ipr_cmd);
4714 }
4715
4716 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4717}
4718
4719/**
4720 * ipr_reset_start_timer - Start a timer for adapter reset job
4721 * @ipr_cmd: ipr command struct
4722 * @timeout: timeout value
4723 *
4724 * Description: This function is used in adapter reset processing
4725 * for timing events. If the reset_cmd pointer in the IOA
4726 * config struct is not this adapter's we are doing nested
4727 * resets and fail_all_ops will take care of freeing the
4728 * command block.
4729 *
4730 * Return value:
4731 * none
4732 **/
4733static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
4734 unsigned long timeout)
4735{
4736 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
4737 ipr_cmd->done = ipr_reset_ioa_job;
4738
4739 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
4740 ipr_cmd->timer.expires = jiffies + timeout;
4741 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
4742 add_timer(&ipr_cmd->timer);
4743}
4744
4745/**
4746 * ipr_init_ioa_mem - Initialize ioa_cfg control block
4747 * @ioa_cfg: ioa cfg struct
4748 *
4749 * Return value:
4750 * nothing
4751 **/
4752static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
4753{
4754 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
4755
4756 /* Initialize Host RRQ pointers */
4757 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
4758 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
4759 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4760 ioa_cfg->toggle_bit = 1;
4761
4762 /* Zero out config table */
4763 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
4764}
4765
4766/**
4767 * ipr_reset_enable_ioa - Enable the IOA following a reset.
4768 * @ipr_cmd: ipr command struct
4769 *
4770 * This function reinitializes some control blocks and
4771 * enables destructive diagnostics on the adapter.
4772 *
4773 * Return value:
4774 * IPR_RC_JOB_RETURN
4775 **/
4776static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
4777{
4778 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4779 volatile u32 int_reg;
4780
4781 ENTER;
4782 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
4783 ipr_init_ioa_mem(ioa_cfg);
4784
4785 ioa_cfg->allow_interrupts = 1;
4786 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4787
4788 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4789 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
4790 ioa_cfg->regs.clr_interrupt_mask_reg);
4791 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4792 return IPR_RC_JOB_CONTINUE;
4793 }
4794
4795 /* Enable destructive diagnostics on IOA */
4796 writel(IPR_DOORBELL, ioa_cfg->regs.set_uproc_interrupt_reg);
4797
4798 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
4799 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4800
4801 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
4802
4803 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
4804 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ);
4805 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
4806 ipr_cmd->done = ipr_reset_ioa_job;
4807 add_timer(&ipr_cmd->timer);
4808 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4809
4810 LEAVE;
4811 return IPR_RC_JOB_RETURN;
4812}
4813
4814/**
4815 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
4816 * @ipr_cmd: ipr command struct
4817 *
4818 * This function is invoked when an adapter dump has run out
4819 * of processing time.
4820 *
4821 * Return value:
4822 * IPR_RC_JOB_CONTINUE
4823 **/
4824static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
4825{
4826 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4827
4828 if (ioa_cfg->sdt_state == GET_DUMP)
4829 ioa_cfg->sdt_state = ABORT_DUMP;
4830
4831 ipr_cmd->job_step = ipr_reset_alert;
4832
4833 return IPR_RC_JOB_CONTINUE;
4834}
4835
4836/**
4837 * ipr_unit_check_no_data - Log a unit check/no data error log
4838 * @ioa_cfg: ioa config struct
4839 *
4840 * Logs an error indicating the adapter unit checked, but for some
4841 * reason, we were unable to fetch the unit check buffer.
4842 *
4843 * Return value:
4844 * nothing
4845 **/
4846static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
4847{
4848 ioa_cfg->errors_logged++;
4849 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
4850}
4851
4852/**
4853 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
4854 * @ioa_cfg: ioa config struct
4855 *
4856 * Fetches the unit check buffer from the adapter by clocking the data
4857 * through the mailbox register.
4858 *
4859 * Return value:
4860 * nothing
4861 **/
4862static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
4863{
4864 unsigned long mailbox;
4865 struct ipr_hostrcb *hostrcb;
4866 struct ipr_uc_sdt sdt;
4867 int rc, length;
4868
4869 mailbox = readl(ioa_cfg->ioa_mailbox);
4870
4871 if (!ipr_sdt_is_fmt2(mailbox)) {
4872 ipr_unit_check_no_data(ioa_cfg);
4873 return;
4874 }
4875
4876 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
4877 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
4878 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
4879
4880 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
4881 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
4882 ipr_unit_check_no_data(ioa_cfg);
4883 return;
4884 }
4885
4886 /* Find length of the first sdt entry (UC buffer) */
4887 length = (be32_to_cpu(sdt.entry[0].end_offset) -
4888 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
4889
4890 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
4891 struct ipr_hostrcb, queue);
4892 list_del(&hostrcb->queue);
4893 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
4894
4895 rc = ipr_get_ldump_data_section(ioa_cfg,
4896 be32_to_cpu(sdt.entry[0].bar_str_offset),
4897 (__be32 *)&hostrcb->hcam,
4898 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
4899
4900 if (!rc)
4901 ipr_handle_log_data(ioa_cfg, hostrcb);
4902 else
4903 ipr_unit_check_no_data(ioa_cfg);
4904
4905 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
4906}
4907
4908/**
4909 * ipr_reset_restore_cfg_space - Restore PCI config space.
4910 * @ipr_cmd: ipr command struct
4911 *
4912 * Description: This function restores the saved PCI config space of
4913 * the adapter, fails all outstanding ops back to the callers, and
4914 * fetches the dump/unit check if applicable to this reset.
4915 *
4916 * Return value:
4917 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4918 **/
4919static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
4920{
4921 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4922 int rc;
4923
4924 ENTER;
4925 rc = pci_restore_state(ioa_cfg->pdev);
4926
4927 if (rc != PCIBIOS_SUCCESSFUL) {
4928 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
4929 return IPR_RC_JOB_CONTINUE;
4930 }
4931
4932 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
4933 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
4934 return IPR_RC_JOB_CONTINUE;
4935 }
4936
4937 ipr_fail_all_ops(ioa_cfg);
4938
4939 if (ioa_cfg->ioa_unit_checked) {
4940 ioa_cfg->ioa_unit_checked = 0;
4941 ipr_get_unit_check_buffer(ioa_cfg);
4942 ipr_cmd->job_step = ipr_reset_alert;
4943 ipr_reset_start_timer(ipr_cmd, 0);
4944 return IPR_RC_JOB_RETURN;
4945 }
4946
4947 if (ioa_cfg->in_ioa_bringdown) {
4948 ipr_cmd->job_step = ipr_ioa_bringdown_done;
4949 } else {
4950 ipr_cmd->job_step = ipr_reset_enable_ioa;
4951
4952 if (GET_DUMP == ioa_cfg->sdt_state) {
4953 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
4954 ipr_cmd->job_step = ipr_reset_wait_for_dump;
4955 schedule_work(&ioa_cfg->work_q);
4956 return IPR_RC_JOB_RETURN;
4957 }
4958 }
4959
4960 ENTER;
4961 return IPR_RC_JOB_CONTINUE;
4962}
4963
4964/**
4965 * ipr_reset_start_bist - Run BIST on the adapter.
4966 * @ipr_cmd: ipr command struct
4967 *
4968 * Description: This function runs BIST on the adapter, then delays 2 seconds.
4969 *
4970 * Return value:
4971 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4972 **/
4973static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
4974{
4975 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4976 int rc;
4977
4978 ENTER;
4979 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
4980
4981 if (rc != PCIBIOS_SUCCESSFUL) {
4982 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
4983 rc = IPR_RC_JOB_CONTINUE;
4984 } else {
4985 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
4986 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
4987 rc = IPR_RC_JOB_RETURN;
4988 }
4989
4990 LEAVE;
4991 return rc;
4992}
4993
4994/**
4995 * ipr_reset_allowed - Query whether or not IOA can be reset
4996 * @ioa_cfg: ioa config struct
4997 *
4998 * Return value:
4999 * 0 if reset not allowed / non-zero if reset is allowed
5000 **/
5001static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
5002{
5003 volatile u32 temp_reg;
5004
5005 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5006 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
5007}
5008
5009/**
5010 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
5011 * @ipr_cmd: ipr command struct
5012 *
5013 * Description: This function waits for adapter permission to run BIST,
5014 * then runs BIST. If the adapter does not give permission after a
5015 * reasonable time, we will reset the adapter anyway. The impact of
5016 * resetting the adapter without warning the adapter is the risk of
5017 * losing the persistent error log on the adapter. If the adapter is
5018 * reset while it is writing to the flash on the adapter, the flash
5019 * segment will have bad ECC and be zeroed.
5020 *
5021 * Return value:
5022 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5023 **/
5024static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
5025{
5026 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5027 int rc = IPR_RC_JOB_RETURN;
5028
5029 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
5030 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
5031 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5032 } else {
5033 ipr_cmd->job_step = ipr_reset_start_bist;
5034 rc = IPR_RC_JOB_CONTINUE;
5035 }
5036
5037 return rc;
5038}
5039
5040/**
5041 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
5042 * @ipr_cmd: ipr command struct
5043 *
5044 * Description: This function alerts the adapter that it will be reset.
5045 * If memory space is not currently enabled, proceed directly
5046 * to running BIST on the adapter. The timer must always be started
5047 * so we guarantee we do not run BIST from ipr_isr.
5048 *
5049 * Return value:
5050 * IPR_RC_JOB_RETURN
5051 **/
5052static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
5053{
5054 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5055 u16 cmd_reg;
5056 int rc;
5057
5058 ENTER;
5059 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
5060
5061 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
5062 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5063 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
5064 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
5065 } else {
5066 ipr_cmd->job_step = ipr_reset_start_bist;
5067 }
5068
5069 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
5070 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5071
5072 LEAVE;
5073 return IPR_RC_JOB_RETURN;
5074}
5075
5076/**
5077 * ipr_reset_ucode_download_done - Microcode download completion
5078 * @ipr_cmd: ipr command struct
5079 *
5080 * Description: This function unmaps the microcode download buffer.
5081 *
5082 * Return value:
5083 * IPR_RC_JOB_CONTINUE
5084 **/
5085static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
5086{
5087 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5088 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5089
5090 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
5091 sglist->num_sg, DMA_TO_DEVICE);
5092
5093 ipr_cmd->job_step = ipr_reset_alert;
5094 return IPR_RC_JOB_CONTINUE;
5095}
5096
5097/**
5098 * ipr_reset_ucode_download - Download microcode to the adapter
5099 * @ipr_cmd: ipr command struct
5100 *
5101 * Description: This function checks to see if it there is microcode
5102 * to download to the adapter. If there is, a download is performed.
5103 *
5104 * Return value:
5105 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5106 **/
5107static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
5108{
5109 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5110 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5111
5112 ENTER;
5113 ipr_cmd->job_step = ipr_reset_alert;
5114
5115 if (!sglist)
5116 return IPR_RC_JOB_CONTINUE;
5117
5118 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5119 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5120 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
5121 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
5122 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
5123 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
5124 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
5125
5126 if (ipr_map_ucode_buffer(ipr_cmd, sglist, sglist->buffer_len)) {
5127 dev_err(&ioa_cfg->pdev->dev,
5128 "Failed to map microcode download buffer\n");
5129 return IPR_RC_JOB_CONTINUE;
5130 }
5131
5132 ipr_cmd->job_step = ipr_reset_ucode_download_done;
5133
5134 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5135 IPR_WRITE_BUFFER_TIMEOUT);
5136
5137 LEAVE;
5138 return IPR_RC_JOB_RETURN;
5139}
5140
5141/**
5142 * ipr_reset_shutdown_ioa - Shutdown the adapter
5143 * @ipr_cmd: ipr command struct
5144 *
5145 * Description: This function issues an adapter shutdown of the
5146 * specified type to the specified adapter as part of the
5147 * adapter reset job.
5148 *
5149 * Return value:
5150 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5151 **/
5152static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
5153{
5154 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5155 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
5156 unsigned long timeout;
5157 int rc = IPR_RC_JOB_CONTINUE;
5158
5159 ENTER;
5160 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
5161 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5162 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5163 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5164 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
5165
5166 if (shutdown_type == IPR_SHUTDOWN_ABBREV)
5167 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
5168 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
5169 timeout = IPR_INTERNAL_TIMEOUT;
5170 else
5171 timeout = IPR_SHUTDOWN_TIMEOUT;
5172
5173 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
5174
5175 rc = IPR_RC_JOB_RETURN;
5176 ipr_cmd->job_step = ipr_reset_ucode_download;
5177 } else
5178 ipr_cmd->job_step = ipr_reset_alert;
5179
5180 LEAVE;
5181 return rc;
5182}
5183
5184/**
5185 * ipr_reset_ioa_job - Adapter reset job
5186 * @ipr_cmd: ipr command struct
5187 *
5188 * Description: This function is the job router for the adapter reset job.
5189 *
5190 * Return value:
5191 * none
5192 **/
5193static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
5194{
5195 u32 rc, ioasc;
5196 unsigned long scratch = ipr_cmd->u.scratch;
5197 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5198
5199 do {
5200 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5201
5202 if (ioa_cfg->reset_cmd != ipr_cmd) {
5203 /*
5204 * We are doing nested adapter resets and this is
5205 * not the current reset job.
5206 */
5207 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5208 return;
5209 }
5210
5211 if (IPR_IOASC_SENSE_KEY(ioasc)) {
5212 dev_err(&ioa_cfg->pdev->dev,
5213 "0x%02X failed with IOASC: 0x%08X\n",
5214 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5215
5216 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5217 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5218 return;
5219 }
5220
5221 ipr_reinit_ipr_cmnd(ipr_cmd);
5222 ipr_cmd->u.scratch = scratch;
5223 rc = ipr_cmd->job_step(ipr_cmd);
5224 } while(rc == IPR_RC_JOB_CONTINUE);
5225}
5226
5227/**
5228 * _ipr_initiate_ioa_reset - Initiate an adapter reset
5229 * @ioa_cfg: ioa config struct
5230 * @job_step: first job step of reset job
5231 * @shutdown_type: shutdown type
5232 *
5233 * Description: This function will initiate the reset of the given adapter
5234 * starting at the selected job step.
5235 * If the caller needs to wait on the completion of the reset,
5236 * the caller must sleep on the reset_wait_q.
5237 *
5238 * Return value:
5239 * none
5240 **/
5241static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5242 int (*job_step) (struct ipr_cmnd *),
5243 enum ipr_shutdown_type shutdown_type)
5244{
5245 struct ipr_cmnd *ipr_cmd;
5246
5247 ioa_cfg->in_reset_reload = 1;
5248 ioa_cfg->allow_cmds = 0;
5249 scsi_block_requests(ioa_cfg->host);
5250
5251 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5252 ioa_cfg->reset_cmd = ipr_cmd;
5253 ipr_cmd->job_step = job_step;
5254 ipr_cmd->u.shutdown_type = shutdown_type;
5255
5256 ipr_reset_ioa_job(ipr_cmd);
5257}
5258
5259/**
5260 * ipr_initiate_ioa_reset - Initiate an adapter reset
5261 * @ioa_cfg: ioa config struct
5262 * @shutdown_type: shutdown type
5263 *
5264 * Description: This function will initiate the reset of the given adapter.
5265 * If the caller needs to wait on the completion of the reset,
5266 * the caller must sleep on the reset_wait_q.
5267 *
5268 * Return value:
5269 * none
5270 **/
5271static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5272 enum ipr_shutdown_type shutdown_type)
5273{
5274 if (ioa_cfg->ioa_is_dead)
5275 return;
5276
5277 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
5278 ioa_cfg->sdt_state = ABORT_DUMP;
5279
5280 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
5281 dev_err(&ioa_cfg->pdev->dev,
5282 "IOA taken offline - error recovery failed\n");
5283
5284 ioa_cfg->reset_retries = 0;
5285 ioa_cfg->ioa_is_dead = 1;
5286
5287 if (ioa_cfg->in_ioa_bringdown) {
5288 ioa_cfg->reset_cmd = NULL;
5289 ioa_cfg->in_reset_reload = 0;
5290 ipr_fail_all_ops(ioa_cfg);
5291 wake_up_all(&ioa_cfg->reset_wait_q);
5292
5293 spin_unlock_irq(ioa_cfg->host->host_lock);
5294 scsi_unblock_requests(ioa_cfg->host);
5295 spin_lock_irq(ioa_cfg->host->host_lock);
5296 return;
5297 } else {
5298 ioa_cfg->in_ioa_bringdown = 1;
5299 shutdown_type = IPR_SHUTDOWN_NONE;
5300 }
5301 }
5302
5303 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
5304 shutdown_type);
5305}
5306
5307/**
5308 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
5309 * @ioa_cfg: ioa cfg struct
5310 *
5311 * Description: This is the second phase of adapter intialization
5312 * This function takes care of initilizing the adapter to the point
5313 * where it can accept new commands.
5314
5315 * Return value:
5316 * 0 on sucess / -EIO on failure
5317 **/
5318static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
5319{
5320 int rc = 0;
5321 unsigned long host_lock_flags = 0;
5322
5323 ENTER;
5324 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5325 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
5326 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, IPR_SHUTDOWN_NONE);
5327
5328 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5329 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5330 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5331
5332 if (ioa_cfg->ioa_is_dead) {
5333 rc = -EIO;
5334 } else if (ipr_invalid_adapter(ioa_cfg)) {
5335 if (!ipr_testmode)
5336 rc = -EIO;
5337
5338 dev_err(&ioa_cfg->pdev->dev,
5339 "Adapter not supported in this hardware configuration.\n");
5340 }
5341
5342 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5343
5344 LEAVE;
5345 return rc;
5346}
5347
5348/**
5349 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
5350 * @ioa_cfg: ioa config struct
5351 *
5352 * Return value:
5353 * none
5354 **/
5355static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
5356{
5357 int i;
5358
5359 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
5360 if (ioa_cfg->ipr_cmnd_list[i])
5361 pci_pool_free(ioa_cfg->ipr_cmd_pool,
5362 ioa_cfg->ipr_cmnd_list[i],
5363 ioa_cfg->ipr_cmnd_list_dma[i]);
5364
5365 ioa_cfg->ipr_cmnd_list[i] = NULL;
5366 }
5367
5368 if (ioa_cfg->ipr_cmd_pool)
5369 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
5370
5371 ioa_cfg->ipr_cmd_pool = NULL;
5372}
5373
5374/**
5375 * ipr_free_mem - Frees memory allocated for an adapter
5376 * @ioa_cfg: ioa cfg struct
5377 *
5378 * Return value:
5379 * nothing
5380 **/
5381static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
5382{
5383 int i;
5384
5385 kfree(ioa_cfg->res_entries);
5386 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
5387 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
5388 ipr_free_cmd_blks(ioa_cfg);
5389 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
5390 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
5391 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
5392 ioa_cfg->cfg_table,
5393 ioa_cfg->cfg_table_dma);
5394
5395 for (i = 0; i < IPR_NUM_HCAMS; i++) {
5396 pci_free_consistent(ioa_cfg->pdev,
5397 sizeof(struct ipr_hostrcb),
5398 ioa_cfg->hostrcb[i],
5399 ioa_cfg->hostrcb_dma[i]);
5400 }
5401
5402 ipr_free_dump(ioa_cfg);
5403 kfree(ioa_cfg->saved_mode_pages);
5404 kfree(ioa_cfg->trace);
5405}
5406
5407/**
5408 * ipr_free_all_resources - Free all allocated resources for an adapter.
5409 * @ipr_cmd: ipr command struct
5410 *
5411 * This function frees all allocated resources for the
5412 * specified adapter.
5413 *
5414 * Return value:
5415 * none
5416 **/
5417static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
5418{
5419 struct pci_dev *pdev = ioa_cfg->pdev;
5420
5421 ENTER;
5422 free_irq(pdev->irq, ioa_cfg);
5423 iounmap(ioa_cfg->hdw_dma_regs);
5424 pci_release_regions(pdev);
5425 ipr_free_mem(ioa_cfg);
5426 scsi_host_put(ioa_cfg->host);
5427 pci_disable_device(pdev);
5428 LEAVE;
5429}
5430
5431/**
5432 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
5433 * @ioa_cfg: ioa config struct
5434 *
5435 * Return value:
5436 * 0 on success / -ENOMEM on allocation failure
5437 **/
5438static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
5439{
5440 struct ipr_cmnd *ipr_cmd;
5441 struct ipr_ioarcb *ioarcb;
5442 dma_addr_t dma_addr;
5443 int i;
5444
5445 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
5446 sizeof(struct ipr_cmnd), 8, 0);
5447
5448 if (!ioa_cfg->ipr_cmd_pool)
5449 return -ENOMEM;
5450
5451 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
5452 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr);
5453
5454 if (!ipr_cmd) {
5455 ipr_free_cmd_blks(ioa_cfg);
5456 return -ENOMEM;
5457 }
5458
5459 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
5460 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
5461 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
5462
5463 ioarcb = &ipr_cmd->ioarcb;
5464 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
5465 ioarcb->host_response_handle = cpu_to_be32(i << 2);
5466 ioarcb->write_ioadl_addr =
5467 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
5468 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5469 ioarcb->ioasa_host_pci_addr =
5470 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
5471 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
5472 ipr_cmd->cmd_index = i;
5473 ipr_cmd->ioa_cfg = ioa_cfg;
5474 ipr_cmd->sense_buffer_dma = dma_addr +
5475 offsetof(struct ipr_cmnd, sense_buffer);
5476
5477 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5478 }
5479
5480 return 0;
5481}
5482
5483/**
5484 * ipr_alloc_mem - Allocate memory for an adapter
5485 * @ioa_cfg: ioa config struct
5486 *
5487 * Return value:
5488 * 0 on success / non-zero for error
5489 **/
5490static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
5491{
5492 struct pci_dev *pdev = ioa_cfg->pdev;
5493 int i, rc = -ENOMEM;
5494
5495 ENTER;
5496 ioa_cfg->res_entries = kmalloc(sizeof(struct ipr_resource_entry) *
5497 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
5498
5499 if (!ioa_cfg->res_entries)
5500 goto out;
5501
5502 memset(ioa_cfg->res_entries, 0,
5503 sizeof(struct ipr_resource_entry) * IPR_MAX_PHYSICAL_DEVS);
5504
5505 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
5506 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
5507
5508 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
5509 sizeof(struct ipr_misc_cbs),
5510 &ioa_cfg->vpd_cbs_dma);
5511
5512 if (!ioa_cfg->vpd_cbs)
5513 goto out_free_res_entries;
5514
5515 if (ipr_alloc_cmd_blks(ioa_cfg))
5516 goto out_free_vpd_cbs;
5517
5518 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
5519 sizeof(u32) * IPR_NUM_CMD_BLKS,
5520 &ioa_cfg->host_rrq_dma);
5521
5522 if (!ioa_cfg->host_rrq)
5523 goto out_ipr_free_cmd_blocks;
5524
5525 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
5526 sizeof(struct ipr_config_table),
5527 &ioa_cfg->cfg_table_dma);
5528
5529 if (!ioa_cfg->cfg_table)
5530 goto out_free_host_rrq;
5531
5532 for (i = 0; i < IPR_NUM_HCAMS; i++) {
5533 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
5534 sizeof(struct ipr_hostrcb),
5535 &ioa_cfg->hostrcb_dma[i]);
5536
5537 if (!ioa_cfg->hostrcb[i])
5538 goto out_free_hostrcb_dma;
5539
5540 ioa_cfg->hostrcb[i]->hostrcb_dma =
5541 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
5542 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
5543 }
5544
5545 ioa_cfg->trace = kmalloc(sizeof(struct ipr_trace_entry) *
5546 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
5547
5548 if (!ioa_cfg->trace)
5549 goto out_free_hostrcb_dma;
5550
5551 memset(ioa_cfg->trace, 0,
5552 sizeof(struct ipr_trace_entry) * IPR_NUM_TRACE_ENTRIES);
5553
5554 rc = 0;
5555out:
5556 LEAVE;
5557 return rc;
5558
5559out_free_hostrcb_dma:
5560 while (i-- > 0) {
5561 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
5562 ioa_cfg->hostrcb[i],
5563 ioa_cfg->hostrcb_dma[i]);
5564 }
5565 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
5566 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
5567out_free_host_rrq:
5568 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
5569 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
5570out_ipr_free_cmd_blocks:
5571 ipr_free_cmd_blks(ioa_cfg);
5572out_free_vpd_cbs:
5573 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
5574 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
5575out_free_res_entries:
5576 kfree(ioa_cfg->res_entries);
5577 goto out;
5578}
5579
5580/**
5581 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
5582 * @ioa_cfg: ioa config struct
5583 *
5584 * Return value:
5585 * none
5586 **/
5587static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
5588{
5589 int i;
5590
5591 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5592 ioa_cfg->bus_attr[i].bus = i;
5593 ioa_cfg->bus_attr[i].qas_enabled = 0;
5594 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
5595 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
5596 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
5597 else
5598 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
5599 }
5600}
5601
5602/**
5603 * ipr_init_ioa_cfg - Initialize IOA config struct
5604 * @ioa_cfg: ioa config struct
5605 * @host: scsi host struct
5606 * @pdev: PCI dev struct
5607 *
5608 * Return value:
5609 * none
5610 **/
5611static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
5612 struct Scsi_Host *host, struct pci_dev *pdev)
5613{
5614 const struct ipr_interrupt_offsets *p;
5615 struct ipr_interrupts *t;
5616 void __iomem *base;
5617
5618 ioa_cfg->host = host;
5619 ioa_cfg->pdev = pdev;
5620 ioa_cfg->log_level = ipr_log_level;
5621 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
5622 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
5623 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
5624 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
5625 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
5626 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
5627 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
5628 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
5629
5630 INIT_LIST_HEAD(&ioa_cfg->free_q);
5631 INIT_LIST_HEAD(&ioa_cfg->pending_q);
5632 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
5633 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
5634 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
5635 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
5636 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg);
5637 init_waitqueue_head(&ioa_cfg->reset_wait_q);
5638 ioa_cfg->sdt_state = INACTIVE;
5639
5640 ipr_initialize_bus_attr(ioa_cfg);
5641
5642 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
5643 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
5644 host->max_channel = IPR_MAX_BUS_TO_SCAN;
5645 host->unique_id = host->host_no;
5646 host->max_cmd_len = IPR_MAX_CDB_LEN;
5647 pci_set_drvdata(pdev, ioa_cfg);
5648
5649 p = &ioa_cfg->chip_cfg->regs;
5650 t = &ioa_cfg->regs;
5651 base = ioa_cfg->hdw_dma_regs;
5652
5653 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
5654 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
5655 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
5656 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
5657 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
5658 t->ioarrin_reg = base + p->ioarrin_reg;
5659 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
5660 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
5661 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
5662}
5663
5664/**
5665 * ipr_get_chip_cfg - Find adapter chip configuration
5666 * @dev_id: PCI device id struct
5667 *
5668 * Return value:
5669 * ptr to chip config on success / NULL on failure
5670 **/
5671static const struct ipr_chip_cfg_t * __devinit
5672ipr_get_chip_cfg(const struct pci_device_id *dev_id)
5673{
5674 int i;
5675
5676 if (dev_id->driver_data)
5677 return (const struct ipr_chip_cfg_t *)dev_id->driver_data;
5678
5679 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
5680 if (ipr_chip[i].vendor == dev_id->vendor &&
5681 ipr_chip[i].device == dev_id->device)
5682 return ipr_chip[i].cfg;
5683 return NULL;
5684}
5685
5686/**
5687 * ipr_probe_ioa - Allocates memory and does first stage of initialization
5688 * @pdev: PCI device struct
5689 * @dev_id: PCI device id struct
5690 *
5691 * Return value:
5692 * 0 on success / non-zero on failure
5693 **/
5694static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
5695 const struct pci_device_id *dev_id)
5696{
5697 struct ipr_ioa_cfg *ioa_cfg;
5698 struct Scsi_Host *host;
5699 unsigned long ipr_regs_pci;
5700 void __iomem *ipr_regs;
5701 u32 rc = PCIBIOS_SUCCESSFUL;
5702
5703 ENTER;
5704
5705 if ((rc = pci_enable_device(pdev))) {
5706 dev_err(&pdev->dev, "Cannot enable adapter\n");
5707 goto out;
5708 }
5709
5710 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
5711
5712 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
5713
5714 if (!host) {
5715 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
5716 rc = -ENOMEM;
5717 goto out_disable;
5718 }
5719
5720 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
5721 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
5722
5723 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
5724
5725 if (!ioa_cfg->chip_cfg) {
5726 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
5727 dev_id->vendor, dev_id->device);
5728 goto out_scsi_host_put;
5729 }
5730
5731 ipr_regs_pci = pci_resource_start(pdev, 0);
5732
5733 rc = pci_request_regions(pdev, IPR_NAME);
5734 if (rc < 0) {
5735 dev_err(&pdev->dev,
5736 "Couldn't register memory range of registers\n");
5737 goto out_scsi_host_put;
5738 }
5739
5740 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
5741
5742 if (!ipr_regs) {
5743 dev_err(&pdev->dev,
5744 "Couldn't map memory range of registers\n");
5745 rc = -ENOMEM;
5746 goto out_release_regions;
5747 }
5748
5749 ioa_cfg->hdw_dma_regs = ipr_regs;
5750 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
5751 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
5752
5753 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
5754
5755 pci_set_master(pdev);
5756
5757 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5758 if (rc < 0) {
5759 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
5760 goto cleanup_nomem;
5761 }
5762
5763 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
5764 ioa_cfg->chip_cfg->cache_line_size);
5765
5766 if (rc != PCIBIOS_SUCCESSFUL) {
5767 dev_err(&pdev->dev, "Write of cache line size failed\n");
5768 rc = -EIO;
5769 goto cleanup_nomem;
5770 }
5771
5772 /* Save away PCI config space for use following IOA reset */
5773 rc = pci_save_state(pdev);
5774
5775 if (rc != PCIBIOS_SUCCESSFUL) {
5776 dev_err(&pdev->dev, "Failed to save PCI config space\n");
5777 rc = -EIO;
5778 goto cleanup_nomem;
5779 }
5780
5781 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
5782 goto cleanup_nomem;
5783
5784 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
5785 goto cleanup_nomem;
5786
5787 rc = ipr_alloc_mem(ioa_cfg);
5788 if (rc < 0) {
5789 dev_err(&pdev->dev,
5790 "Couldn't allocate enough memory for device driver!\n");
5791 goto cleanup_nomem;
5792 }
5793
5794 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
5795 rc = request_irq(pdev->irq, ipr_isr, SA_SHIRQ, IPR_NAME, ioa_cfg);
5796
5797 if (rc) {
5798 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
5799 pdev->irq, rc);
5800 goto cleanup_nolog;
5801 }
5802
5803 spin_lock(&ipr_driver_lock);
5804 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
5805 spin_unlock(&ipr_driver_lock);
5806
5807 LEAVE;
5808out:
5809 return rc;
5810
5811cleanup_nolog:
5812 ipr_free_mem(ioa_cfg);
5813cleanup_nomem:
5814 iounmap(ipr_regs);
5815out_release_regions:
5816 pci_release_regions(pdev);
5817out_scsi_host_put:
5818 scsi_host_put(host);
5819out_disable:
5820 pci_disable_device(pdev);
5821 goto out;
5822}
5823
5824/**
5825 * ipr_scan_vsets - Scans for VSET devices
5826 * @ioa_cfg: ioa config struct
5827 *
5828 * Description: Since the VSET resources do not follow SAM in that we can have
5829 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
5830 *
5831 * Return value:
5832 * none
5833 **/
5834static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
5835{
5836 int target, lun;
5837
5838 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
5839 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
5840 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
5841}
5842
5843/**
5844 * ipr_initiate_ioa_bringdown - Bring down an adapter
5845 * @ioa_cfg: ioa config struct
5846 * @shutdown_type: shutdown type
5847 *
5848 * Description: This function will initiate bringing down the adapter.
5849 * This consists of issuing an IOA shutdown to the adapter
5850 * to flush the cache, and running BIST.
5851 * If the caller needs to wait on the completion of the reset,
5852 * the caller must sleep on the reset_wait_q.
5853 *
5854 * Return value:
5855 * none
5856 **/
5857static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
5858 enum ipr_shutdown_type shutdown_type)
5859{
5860 ENTER;
5861 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
5862 ioa_cfg->sdt_state = ABORT_DUMP;
5863 ioa_cfg->reset_retries = 0;
5864 ioa_cfg->in_ioa_bringdown = 1;
5865 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
5866 LEAVE;
5867}
5868
5869/**
5870 * __ipr_remove - Remove a single adapter
5871 * @pdev: pci device struct
5872 *
5873 * Adapter hot plug remove entry point.
5874 *
5875 * Return value:
5876 * none
5877 **/
5878static void __ipr_remove(struct pci_dev *pdev)
5879{
5880 unsigned long host_lock_flags = 0;
5881 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
5882 ENTER;
5883
5884 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5885 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
5886
5887 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5888 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5cbf5eae 5889 flush_scheduled_work();
1da177e4
LT		 5890 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5891
5892 spin_lock(&ipr_driver_lock);
5893 list_del(&ioa_cfg->queue);
5894 spin_unlock(&ipr_driver_lock);
5895
5896 if (ioa_cfg->sdt_state == ABORT_DUMP)
5897 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
5898 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5899
5900 ipr_free_all_resources(ioa_cfg);
5901
5902 LEAVE;
5903}
5904
5905/**
5906 * ipr_remove - IOA hot plug remove entry point
5907 * @pdev: pci device struct
5908 *
5909 * Adapter hot plug remove entry point.
5910 *
5911 * Return value:
5912 * none
5913 **/
5914static void ipr_remove(struct pci_dev *pdev)
5915{
5916 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
5917
5918 ENTER;
5919
1da177e4
LT		 5920 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
5921 &ipr_trace_attr);
5922 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
5923 &ipr_dump_attr);
5924 scsi_remove_host(ioa_cfg->host);
5925
5926 __ipr_remove(pdev);
5927
5928 LEAVE;
5929}
5930
5931/**
5932 * ipr_probe - Adapter hot plug add entry point
5933 *
5934 * Return value:
5935 * 0 on success / non-zero on failure
5936 **/
5937static int __devinit ipr_probe(struct pci_dev *pdev,
5938 const struct pci_device_id *dev_id)
5939{
5940 struct ipr_ioa_cfg *ioa_cfg;
5941 int rc;
5942
5943 rc = ipr_probe_ioa(pdev, dev_id);
5944
5945 if (rc)
5946 return rc;
5947
5948 ioa_cfg = pci_get_drvdata(pdev);
5949 rc = ipr_probe_ioa_part2(ioa_cfg);
5950
5951 if (rc) {
5952 __ipr_remove(pdev);
5953 return rc;
5954 }
5955
5956 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
5957
5958 if (rc) {
5959 __ipr_remove(pdev);
5960 return rc;
5961 }
5962
5963 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
5964 &ipr_trace_attr);
5965
5966 if (rc) {
5967 scsi_remove_host(ioa_cfg->host);
5968 __ipr_remove(pdev);
5969 return rc;
5970 }
5971
5972 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
5973 &ipr_dump_attr);
5974
5975 if (rc) {
5976 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
5977 &ipr_trace_attr);
5978 scsi_remove_host(ioa_cfg->host);
5979 __ipr_remove(pdev);
5980 return rc;
5981 }
5982
5983 scsi_scan_host(ioa_cfg->host);
5984 ipr_scan_vsets(ioa_cfg);
5985 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
5986 ioa_cfg->allow_ml_add_del = 1;
5987 schedule_work(&ioa_cfg->work_q);
5988 return 0;
5989}
5990
5991/**
5992 * ipr_shutdown - Shutdown handler.
5993 * @dev: device struct
5994 *
5995 * This function is invoked upon system shutdown/reboot. It will issue
5996 * an adapter shutdown to the adapter to flush the write cache.
5997 *
5998 * Return value:
5999 * none
6000 **/
6001static void ipr_shutdown(struct device *dev)
6002{
6003 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(to_pci_dev(dev));
6004 unsigned long lock_flags = 0;
6005
6006 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6007 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
6008 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6009 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6010}
6011
6012static struct pci_device_id ipr_pci_table[] __devinitdata = {
6013 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6014 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702,
6015 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6016 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6017 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703,
6018 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6019 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6020 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D,
6021 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6022 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6023 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E,
6024 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6025 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6026 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B,
6027 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6028 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6029 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E,
6030 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6031 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6032 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A,
6033 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6034 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6035 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780,
6036 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
6037 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6038 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E,
6039 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
6040 { }
6041};
6042MODULE_DEVICE_TABLE(pci, ipr_pci_table);
6043
6044static struct pci_driver ipr_driver = {
6045 .name = IPR_NAME,
6046 .id_table = ipr_pci_table,
6047 .probe = ipr_probe,
6048 .remove = ipr_remove,
6049 .driver = {
6050 .shutdown = ipr_shutdown,
6051 },
6052};
6053
6054/**
6055 * ipr_init - Module entry point
6056 *
6057 * Return value:
6058 * 0 on success / negative value on failure
6059 **/
6060static int __init ipr_init(void)
6061{
6062 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
6063 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
6064
6065 return pci_module_init(&ipr_driver);
6066}
6067
6068/**
6069 * ipr_exit - Module unload
6070 *
6071 * Module unload entry point.
6072 *
6073 * Return value:
6074 * none
6075 **/
6076static void __exit ipr_exit(void)
6077{
6078 pci_unregister_driver(&ipr_driver);
6079}
6080
6081module_init(ipr_init);
6082module_exit(ipr_exit);
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