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