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[SCSI] remove the obsolete SCSI qlogicisp driver
[mirror_ubuntu-artful-kernel.git] / drivers / scsi / ipr.c
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1da177e4
LT		 1/*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24/*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
57#include <linux/config.h>
58#include <linux/fs.h>
59#include <linux/init.h>
60#include <linux/types.h>
61#include <linux/errno.h>
62#include <linux/kernel.h>
63#include <linux/ioport.h>
64#include <linux/delay.h>
65#include <linux/pci.h>
66#include <linux/wait.h>
67#include <linux/spinlock.h>
68#include <linux/sched.h>
69#include <linux/interrupt.h>
70#include <linux/blkdev.h>
71#include <linux/firmware.h>
72#include <linux/module.h>
73#include <linux/moduleparam.h>
74#include <asm/io.h>
75#include <asm/irq.h>
76#include <asm/processor.h>
77#include <scsi/scsi.h>
78#include <scsi/scsi_host.h>
79#include <scsi/scsi_tcq.h>
80#include <scsi/scsi_eh.h>
81#include <scsi/scsi_cmnd.h>
82#include <scsi/scsi_request.h>
83#include "ipr.h"
84
85/*
86 * Global Data
87 */
88static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head);
89static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
90static unsigned int ipr_max_speed = 1;
91static int ipr_testmode = 0;
92static unsigned int ipr_fastfail = 0;
93static unsigned int ipr_transop_timeout = IPR_OPERATIONAL_TIMEOUT;
94static DEFINE_SPINLOCK(ipr_driver_lock);
95
96/* This table describes the differences between DMA controller chips */
97static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
98 { /* Gemstone and Citrine */
99 .mailbox = 0x0042C,
100 .cache_line_size = 0x20,
101 {
102 .set_interrupt_mask_reg = 0x0022C,
103 .clr_interrupt_mask_reg = 0x00230,
104 .sense_interrupt_mask_reg = 0x0022C,
105 .clr_interrupt_reg = 0x00228,
106 .sense_interrupt_reg = 0x00224,
107 .ioarrin_reg = 0x00404,
108 .sense_uproc_interrupt_reg = 0x00214,
109 .set_uproc_interrupt_reg = 0x00214,
110 .clr_uproc_interrupt_reg = 0x00218
111 }
112 },
113 { /* Snipe and Scamp */
114 .mailbox = 0x0052C,
115 .cache_line_size = 0x20,
116 {
117 .set_interrupt_mask_reg = 0x00288,
118 .clr_interrupt_mask_reg = 0x0028C,
119 .sense_interrupt_mask_reg = 0x00288,
120 .clr_interrupt_reg = 0x00284,
121 .sense_interrupt_reg = 0x00280,
122 .ioarrin_reg = 0x00504,
123 .sense_uproc_interrupt_reg = 0x00290,
124 .set_uproc_interrupt_reg = 0x00290,
125 .clr_uproc_interrupt_reg = 0x00294
126 }
127 },
128};
129
130static const struct ipr_chip_t ipr_chip[] = {
131 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
132 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
133 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] },
134 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] }
135};
136
137static int ipr_max_bus_speeds [] = {
138 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
139};
140
141MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
142MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
143module_param_named(max_speed, ipr_max_speed, uint, 0);
144MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
145module_param_named(log_level, ipr_log_level, uint, 0);
146MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
147module_param_named(testmode, ipr_testmode, int, 0);
148MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
149module_param_named(fastfail, ipr_fastfail, int, 0);
150MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
151module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
152MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
153MODULE_LICENSE("GPL");
154MODULE_VERSION(IPR_DRIVER_VERSION);
155
156static const char *ipr_gpdd_dev_end_states[] = {
157 "Command complete",
158 "Terminated by host",
159 "Terminated by device reset",
160 "Terminated by bus reset",
161 "Unknown",
162 "Command not started"
163};
164
165static const char *ipr_gpdd_dev_bus_phases[] = {
166 "Bus free",
167 "Arbitration",
168 "Selection",
169 "Message out",
170 "Command",
171 "Message in",
172 "Data out",
173 "Data in",
174 "Status",
175 "Reselection",
176 "Unknown"
177};
178
179/* A constant array of IOASCs/URCs/Error Messages */
180static const
181struct ipr_error_table_t ipr_error_table[] = {
182 {0x00000000, 1, 1,
183 "8155: An unknown error was received"},
184 {0x00330000, 0, 0,
185 "Soft underlength error"},
186 {0x005A0000, 0, 0,
187 "Command to be cancelled not found"},
188 {0x00808000, 0, 0,
189 "Qualified success"},
190 {0x01080000, 1, 1,
191 "FFFE: Soft device bus error recovered by the IOA"},
192 {0x01170600, 0, 1,
193 "FFF9: Device sector reassign successful"},
194 {0x01170900, 0, 1,
195 "FFF7: Media error recovered by device rewrite procedures"},
196 {0x01180200, 0, 1,
197 "7001: IOA sector reassignment successful"},
198 {0x01180500, 0, 1,
199 "FFF9: Soft media error. Sector reassignment recommended"},
200 {0x01180600, 0, 1,
201 "FFF7: Media error recovered by IOA rewrite procedures"},
202 {0x01418000, 0, 1,
203 "FF3D: Soft PCI bus error recovered by the IOA"},
204 {0x01440000, 1, 1,
205 "FFF6: Device hardware error recovered by the IOA"},
206 {0x01448100, 0, 1,
207 "FFF6: Device hardware error recovered by the device"},
208 {0x01448200, 1, 1,
209 "FF3D: Soft IOA error recovered by the IOA"},
210 {0x01448300, 0, 1,
211 "FFFA: Undefined device response recovered by the IOA"},
212 {0x014A0000, 1, 1,
213 "FFF6: Device bus error, message or command phase"},
214 {0x015D0000, 0, 1,
215 "FFF6: Failure prediction threshold exceeded"},
216 {0x015D9200, 0, 1,
217 "8009: Impending cache battery pack failure"},
218 {0x02040400, 0, 0,
219 "34FF: Disk device format in progress"},
220 {0x023F0000, 0, 0,
221 "Synchronization required"},
222 {0x024E0000, 0, 0,
223 "No ready, IOA shutdown"},
224 {0x025A0000, 0, 0,
225 "Not ready, IOA has been shutdown"},
226 {0x02670100, 0, 1,
227 "3020: Storage subsystem configuration error"},
228 {0x03110B00, 0, 0,
229 "FFF5: Medium error, data unreadable, recommend reassign"},
230 {0x03110C00, 0, 0,
231 "7000: Medium error, data unreadable, do not reassign"},
232 {0x03310000, 0, 1,
233 "FFF3: Disk media format bad"},
234 {0x04050000, 0, 1,
235 "3002: Addressed device failed to respond to selection"},
236 {0x04080000, 1, 1,
237 "3100: Device bus error"},
238 {0x04080100, 0, 1,
239 "3109: IOA timed out a device command"},
240 {0x04088000, 0, 0,
241 "3120: SCSI bus is not operational"},
242 {0x04118000, 0, 1,
243 "9000: IOA reserved area data check"},
244 {0x04118100, 0, 1,
245 "9001: IOA reserved area invalid data pattern"},
246 {0x04118200, 0, 1,
247 "9002: IOA reserved area LRC error"},
248 {0x04320000, 0, 1,
249 "102E: Out of alternate sectors for disk storage"},
250 {0x04330000, 1, 1,
251 "FFF4: Data transfer underlength error"},
252 {0x04338000, 1, 1,
253 "FFF4: Data transfer overlength error"},
254 {0x043E0100, 0, 1,
255 "3400: Logical unit failure"},
256 {0x04408500, 0, 1,
257 "FFF4: Device microcode is corrupt"},
258 {0x04418000, 1, 1,
259 "8150: PCI bus error"},
260 {0x04430000, 1, 0,
261 "Unsupported device bus message received"},
262 {0x04440000, 1, 1,
263 "FFF4: Disk device problem"},
264 {0x04448200, 1, 1,
265 "8150: Permanent IOA failure"},
266 {0x04448300, 0, 1,
267 "3010: Disk device returned wrong response to IOA"},
268 {0x04448400, 0, 1,
269 "8151: IOA microcode error"},
270 {0x04448500, 0, 0,
271 "Device bus status error"},
272 {0x04448600, 0, 1,
273 "8157: IOA error requiring IOA reset to recover"},
274 {0x04490000, 0, 0,
275 "Message reject received from the device"},
276 {0x04449200, 0, 1,
277 "8008: A permanent cache battery pack failure occurred"},
278 {0x0444A000, 0, 1,
279 "9090: Disk unit has been modified after the last known status"},
280 {0x0444A200, 0, 1,
281 "9081: IOA detected device error"},
282 {0x0444A300, 0, 1,
283 "9082: IOA detected device error"},
284 {0x044A0000, 1, 1,
285 "3110: Device bus error, message or command phase"},
286 {0x04670400, 0, 1,
287 "9091: Incorrect hardware configuration change has been detected"},
288 {0x046E0000, 0, 1,
289 "FFF4: Command to logical unit failed"},
290 {0x05240000, 1, 0,
291 "Illegal request, invalid request type or request packet"},
292 {0x05250000, 0, 0,
293 "Illegal request, invalid resource handle"},
294 {0x05260000, 0, 0,
295 "Illegal request, invalid field in parameter list"},
296 {0x05260100, 0, 0,
297 "Illegal request, parameter not supported"},
298 {0x05260200, 0, 0,
299 "Illegal request, parameter value invalid"},
300 {0x052C0000, 0, 0,
301 "Illegal request, command sequence error"},
302 {0x06040500, 0, 1,
303 "9031: Array protection temporarily suspended, protection resuming"},
304 {0x06040600, 0, 1,
305 "9040: Array protection temporarily suspended, protection resuming"},
306 {0x06290000, 0, 1,
307 "FFFB: SCSI bus was reset"},
308 {0x06290500, 0, 0,
309 "FFFE: SCSI bus transition to single ended"},
310 {0x06290600, 0, 0,
311 "FFFE: SCSI bus transition to LVD"},
312 {0x06298000, 0, 1,
313 "FFFB: SCSI bus was reset by another initiator"},
314 {0x063F0300, 0, 1,
315 "3029: A device replacement has occurred"},
316 {0x064C8000, 0, 1,
317 "9051: IOA cache data exists for a missing or failed device"},
318 {0x06670100, 0, 1,
319 "9025: Disk unit is not supported at its physical location"},
320 {0x06670600, 0, 1,
321 "3020: IOA detected a SCSI bus configuration error"},
322 {0x06678000, 0, 1,
323 "3150: SCSI bus configuration error"},
324 {0x06690200, 0, 1,
325 "9041: Array protection temporarily suspended"},
326 {0x06698200, 0, 1,
327 "9042: Corrupt array parity detected on specified device"},
328 {0x066B0200, 0, 1,
329 "9030: Array no longer protected due to missing or failed disk unit"},
330 {0x066B8200, 0, 1,
331 "9032: Array exposed but still protected"},
332 {0x07270000, 0, 0,
333 "Failure due to other device"},
334 {0x07278000, 0, 1,
335 "9008: IOA does not support functions expected by devices"},
336 {0x07278100, 0, 1,
337 "9010: Cache data associated with attached devices cannot be found"},
338 {0x07278200, 0, 1,
339 "9011: Cache data belongs to devices other than those attached"},
340 {0x07278400, 0, 1,
341 "9020: Array missing 2 or more devices with only 1 device present"},
342 {0x07278500, 0, 1,
343 "9021: Array missing 2 or more devices with 2 or more devices present"},
344 {0x07278600, 0, 1,
345 "9022: Exposed array is missing a required device"},
346 {0x07278700, 0, 1,
347 "9023: Array member(s) not at required physical locations"},
348 {0x07278800, 0, 1,
349 "9024: Array not functional due to present hardware configuration"},
350 {0x07278900, 0, 1,
351 "9026: Array not functional due to present hardware configuration"},
352 {0x07278A00, 0, 1,
353 "9027: Array is missing a device and parity is out of sync"},
354 {0x07278B00, 0, 1,
355 "9028: Maximum number of arrays already exist"},
356 {0x07278C00, 0, 1,
357 "9050: Required cache data cannot be located for a disk unit"},
358 {0x07278D00, 0, 1,
359 "9052: Cache data exists for a device that has been modified"},
360 {0x07278F00, 0, 1,
361 "9054: IOA resources not available due to previous problems"},
362 {0x07279100, 0, 1,
363 "9092: Disk unit requires initialization before use"},
364 {0x07279200, 0, 1,
365 "9029: Incorrect hardware configuration change has been detected"},
366 {0x07279600, 0, 1,
367 "9060: One or more disk pairs are missing from an array"},
368 {0x07279700, 0, 1,
369 "9061: One or more disks are missing from an array"},
370 {0x07279800, 0, 1,
371 "9062: One or more disks are missing from an array"},
372 {0x07279900, 0, 1,
373 "9063: Maximum number of functional arrays has been exceeded"},
374 {0x0B260000, 0, 0,
375 "Aborted command, invalid descriptor"},
376 {0x0B5A0000, 0, 0,
377 "Command terminated by host"}
378};
379
380static const struct ipr_ses_table_entry ipr_ses_table[] = {
381 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
382 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
383 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
384 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
385 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
386 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
387 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
388 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
389 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
390 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
391 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
392 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
393 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
394};
395
396/*
397 * Function Prototypes
398 */
399static int ipr_reset_alert(struct ipr_cmnd *);
400static void ipr_process_ccn(struct ipr_cmnd *);
401static void ipr_process_error(struct ipr_cmnd *);
402static void ipr_reset_ioa_job(struct ipr_cmnd *);
403static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
404 enum ipr_shutdown_type);
405
406#ifdef CONFIG_SCSI_IPR_TRACE
407/**
408 * ipr_trc_hook - Add a trace entry to the driver trace
409 * @ipr_cmd: ipr command struct
410 * @type: trace type
411 * @add_data: additional data
412 *
413 * Return value:
414 * none
415 **/
416static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
417 u8 type, u32 add_data)
418{
419 struct ipr_trace_entry *trace_entry;
420 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
421
422 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
423 trace_entry->time = jiffies;
424 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
425 trace_entry->type = type;
426 trace_entry->cmd_index = ipr_cmd->cmd_index;
427 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
428 trace_entry->u.add_data = add_data;
429}
430#else
431#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
432#endif
433
434/**
435 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
436 * @ipr_cmd: ipr command struct
437 *
438 * Return value:
439 * none
440 **/
441static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
442{
443 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
444 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
445
446 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
447 ioarcb->write_data_transfer_length = 0;
448 ioarcb->read_data_transfer_length = 0;
449 ioarcb->write_ioadl_len = 0;
450 ioarcb->read_ioadl_len = 0;
451 ioasa->ioasc = 0;
452 ioasa->residual_data_len = 0;
453
454 ipr_cmd->scsi_cmd = NULL;
455 ipr_cmd->sense_buffer[0] = 0;
456 ipr_cmd->dma_use_sg = 0;
457}
458
459/**
460 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
461 * @ipr_cmd: ipr command struct
462 *
463 * Return value:
464 * none
465 **/
466static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
467{
468 ipr_reinit_ipr_cmnd(ipr_cmd);
469 ipr_cmd->u.scratch = 0;
470 ipr_cmd->sibling = NULL;
471 init_timer(&ipr_cmd->timer);
472}
473
474/**
475 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
476 * @ioa_cfg: ioa config struct
477 *
478 * Return value:
479 * pointer to ipr command struct
480 **/
481static
482struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
483{
484 struct ipr_cmnd *ipr_cmd;
485
486 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
487 list_del(&ipr_cmd->queue);
488 ipr_init_ipr_cmnd(ipr_cmd);
489
490 return ipr_cmd;
491}
492
493/**
494 * ipr_unmap_sglist - Unmap scatterlist if mapped
495 * @ioa_cfg: ioa config struct
496 * @ipr_cmd: ipr command struct
497 *
498 * Return value:
499 * nothing
500 **/
501static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg,
502 struct ipr_cmnd *ipr_cmd)
503{
504 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
505
506 if (ipr_cmd->dma_use_sg) {
507 if (scsi_cmd->use_sg > 0) {
508 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer,
509 scsi_cmd->use_sg,
510 scsi_cmd->sc_data_direction);
511 } else {
512 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle,
513 scsi_cmd->request_bufflen,
514 scsi_cmd->sc_data_direction);
515 }
516 }
517}
518
519/**
520 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
521 * @ioa_cfg: ioa config struct
522 * @clr_ints: interrupts to clear
523 *
524 * This function masks all interrupts on the adapter, then clears the
525 * interrupts specified in the mask
526 *
527 * Return value:
528 * none
529 **/
530static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
531 u32 clr_ints)
532{
533 volatile u32 int_reg;
534
535 /* Stop new interrupts */
536 ioa_cfg->allow_interrupts = 0;
537
538 /* Set interrupt mask to stop all new interrupts */
539 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
540
541 /* Clear any pending interrupts */
542 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
543 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
544}
545
546/**
547 * ipr_save_pcix_cmd_reg - Save PCI-X command register
548 * @ioa_cfg: ioa config struct
549 *
550 * Return value:
551 * 0 on success / -EIO on failure
552 **/
553static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
554{
555 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
556
557 if (pcix_cmd_reg == 0) {
558 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
559 return -EIO;
560 }
561
562 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
563 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
564 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
565 return -EIO;
566 }
567
568 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
569 return 0;
570}
571
572/**
573 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
574 * @ioa_cfg: ioa config struct
575 *
576 * Return value:
577 * 0 on success / -EIO on failure
578 **/
579static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
580{
581 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
582
583 if (pcix_cmd_reg) {
584 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
585 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
586 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
587 return -EIO;
588 }
589 } else {
590 dev_err(&ioa_cfg->pdev->dev,
591 "Failed to setup PCI-X command register\n");
592 return -EIO;
593 }
594
595 return 0;
596}
597
598/**
599 * ipr_scsi_eh_done - mid-layer done function for aborted ops
600 * @ipr_cmd: ipr command struct
601 *
602 * This function is invoked by the interrupt handler for
603 * ops generated by the SCSI mid-layer which are being aborted.
604 *
605 * Return value:
606 * none
607 **/
608static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
609{
610 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
611 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
612
613 scsi_cmd->result |= (DID_ERROR << 16);
614
615 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
616 scsi_cmd->scsi_done(scsi_cmd);
617 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
618}
619
620/**
621 * ipr_fail_all_ops - Fails all outstanding ops.
622 * @ioa_cfg: ioa config struct
623 *
624 * This function fails all outstanding ops.
625 *
626 * Return value:
627 * none
628 **/
629static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
630{
631 struct ipr_cmnd *ipr_cmd, *temp;
632
633 ENTER;
634 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
635 list_del(&ipr_cmd->queue);
636
637 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
638 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
639
640 if (ipr_cmd->scsi_cmd)
641 ipr_cmd->done = ipr_scsi_eh_done;
642
643 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
644 del_timer(&ipr_cmd->timer);
645 ipr_cmd->done(ipr_cmd);
646 }
647
648 LEAVE;
649}
650
651/**
652 * ipr_do_req - Send driver initiated requests.
653 * @ipr_cmd: ipr command struct
654 * @done: done function
655 * @timeout_func: timeout function
656 * @timeout: timeout value
657 *
658 * This function sends the specified command to the adapter with the
659 * timeout given. The done function is invoked on command completion.
660 *
661 * Return value:
662 * none
663 **/
664static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
665 void (*done) (struct ipr_cmnd *),
666 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
667{
668 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
669
670 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
671
672 ipr_cmd->done = done;
673
674 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
675 ipr_cmd->timer.expires = jiffies + timeout;
676 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
677
678 add_timer(&ipr_cmd->timer);
679
680 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
681
682 mb();
683 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
684 ioa_cfg->regs.ioarrin_reg);
685}
686
687/**
688 * ipr_internal_cmd_done - Op done function for an internally generated op.
689 * @ipr_cmd: ipr command struct
690 *
691 * This function is the op done function for an internally generated,
692 * blocking op. It simply wakes the sleeping thread.
693 *
694 * Return value:
695 * none
696 **/
697static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
698{
699 if (ipr_cmd->sibling)
700 ipr_cmd->sibling = NULL;
701 else
702 complete(&ipr_cmd->completion);
703}
704
705/**
706 * ipr_send_blocking_cmd - Send command and sleep on its completion.
707 * @ipr_cmd: ipr command struct
708 * @timeout_func: function to invoke if command times out
709 * @timeout: timeout
710 *
711 * Return value:
712 * none
713 **/
714static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
715 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
716 u32 timeout)
717{
718 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
719
720 init_completion(&ipr_cmd->completion);
721 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
722
723 spin_unlock_irq(ioa_cfg->host->host_lock);
724 wait_for_completion(&ipr_cmd->completion);
725 spin_lock_irq(ioa_cfg->host->host_lock);
726}
727
728/**
729 * ipr_send_hcam - Send an HCAM to the adapter.
730 * @ioa_cfg: ioa config struct
731 * @type: HCAM type
732 * @hostrcb: hostrcb struct
733 *
734 * This function will send a Host Controlled Async command to the adapter.
735 * If HCAMs are currently not allowed to be issued to the adapter, it will
736 * place the hostrcb on the free queue.
737 *
738 * Return value:
739 * none
740 **/
741static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
742 struct ipr_hostrcb *hostrcb)
743{
744 struct ipr_cmnd *ipr_cmd;
745 struct ipr_ioarcb *ioarcb;
746
747 if (ioa_cfg->allow_cmds) {
748 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
749 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
750 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
751
752 ipr_cmd->u.hostrcb = hostrcb;
753 ioarcb = &ipr_cmd->ioarcb;
754
755 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
756 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
757 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
758 ioarcb->cmd_pkt.cdb[1] = type;
759 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
760 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
761
762 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
763 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
764 ipr_cmd->ioadl[0].flags_and_data_len =
765 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
766 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
767
768 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
769 ipr_cmd->done = ipr_process_ccn;
770 else
771 ipr_cmd->done = ipr_process_error;
772
773 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
774
775 mb();
776 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
777 ioa_cfg->regs.ioarrin_reg);
778 } else {
779 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
780 }
781}
782
783/**
784 * ipr_init_res_entry - Initialize a resource entry struct.
785 * @res: resource entry struct
786 *
787 * Return value:
788 * none
789 **/
790static void ipr_init_res_entry(struct ipr_resource_entry *res)
791{
792 res->needs_sync_complete = 1;
793 res->in_erp = 0;
794 res->add_to_ml = 0;
795 res->del_from_ml = 0;
796 res->resetting_device = 0;
797 res->sdev = NULL;
798}
799
800/**
801 * ipr_handle_config_change - Handle a config change from the adapter
802 * @ioa_cfg: ioa config struct
803 * @hostrcb: hostrcb
804 *
805 * Return value:
806 * none
807 **/
808static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
809 struct ipr_hostrcb *hostrcb)
810{
811 struct ipr_resource_entry *res = NULL;
812 struct ipr_config_table_entry *cfgte;
813 u32 is_ndn = 1;
814
815 cfgte = &hostrcb->hcam.u.ccn.cfgte;
816
817 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
818 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
819 sizeof(cfgte->res_addr))) {
820 is_ndn = 0;
821 break;
822 }
823 }
824
825 if (is_ndn) {
826 if (list_empty(&ioa_cfg->free_res_q)) {
827 ipr_send_hcam(ioa_cfg,
828 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
829 hostrcb);
830 return;
831 }
832
833 res = list_entry(ioa_cfg->free_res_q.next,
834 struct ipr_resource_entry, queue);
835
836 list_del(&res->queue);
837 ipr_init_res_entry(res);
838 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
839 }
840
841 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
842
843 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
844 if (res->sdev) {
845 res->sdev->hostdata = NULL;
846 res->del_from_ml = 1;
847 if (ioa_cfg->allow_ml_add_del)
848 schedule_work(&ioa_cfg->work_q);
849 } else
850 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
851 } else if (!res->sdev) {
852 res->add_to_ml = 1;
853 if (ioa_cfg->allow_ml_add_del)
854 schedule_work(&ioa_cfg->work_q);
855 }
856
857 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
858}
859
860/**
861 * ipr_process_ccn - Op done function for a CCN.
862 * @ipr_cmd: ipr command struct
863 *
864 * This function is the op done function for a configuration
865 * change notification host controlled async from the adapter.
866 *
867 * Return value:
868 * none
869 **/
870static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
871{
872 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
873 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
874 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
875
876 list_del(&hostrcb->queue);
877 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
878
879 if (ioasc) {
880 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
881 dev_err(&ioa_cfg->pdev->dev,
882 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
883
884 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
885 } else {
886 ipr_handle_config_change(ioa_cfg, hostrcb);
887 }
888}
889
890/**
891 * ipr_log_vpd - Log the passed VPD to the error log.
892 * @vpids: vendor/product id struct
893 * @serial_num: serial number string
894 *
895 * Return value:
896 * none
897 **/
898static void ipr_log_vpd(struct ipr_std_inq_vpids *vpids, u8 *serial_num)
899{
900 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
901 + IPR_SERIAL_NUM_LEN];
902
903 memcpy(buffer, vpids->vendor_id, IPR_VENDOR_ID_LEN);
904 memcpy(buffer + IPR_VENDOR_ID_LEN, vpids->product_id,
905 IPR_PROD_ID_LEN);
906 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
907 ipr_err("Vendor/Product ID: %s\n", buffer);
908
909 memcpy(buffer, serial_num, IPR_SERIAL_NUM_LEN);
910 buffer[IPR_SERIAL_NUM_LEN] = '\0';
911 ipr_err(" Serial Number: %s\n", buffer);
912}
913
914/**
915 * ipr_log_cache_error - Log a cache error.
916 * @ioa_cfg: ioa config struct
917 * @hostrcb: hostrcb struct
918 *
919 * Return value:
920 * none
921 **/
922static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
923 struct ipr_hostrcb *hostrcb)
924{
925 struct ipr_hostrcb_type_02_error *error =
926 &hostrcb->hcam.u.error.u.type_02_error;
927
928 ipr_err("-----Current Configuration-----\n");
929 ipr_err("Cache Directory Card Information:\n");
930 ipr_log_vpd(&error->ioa_vpids, error->ioa_sn);
931 ipr_err("Adapter Card Information:\n");
932 ipr_log_vpd(&error->cfc_vpids, error->cfc_sn);
933
934 ipr_err("-----Expected Configuration-----\n");
935 ipr_err("Cache Directory Card Information:\n");
936 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpids,
937 error->ioa_last_attached_to_cfc_sn);
938 ipr_err("Adapter Card Information:\n");
939 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpids,
940 error->cfc_last_attached_to_ioa_sn);
941
942 ipr_err("Additional IOA Data: %08X %08X %08X\n",
943 be32_to_cpu(error->ioa_data[0]),
944 be32_to_cpu(error->ioa_data[1]),
945 be32_to_cpu(error->ioa_data[2]));
946}
947
948/**
949 * ipr_log_config_error - Log a configuration error.
950 * @ioa_cfg: ioa config struct
951 * @hostrcb: hostrcb struct
952 *
953 * Return value:
954 * none
955 **/
956static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
957 struct ipr_hostrcb *hostrcb)
958{
959 int errors_logged, i;
960 struct ipr_hostrcb_device_data_entry *dev_entry;
961 struct ipr_hostrcb_type_03_error *error;
962
963 error = &hostrcb->hcam.u.error.u.type_03_error;
964 errors_logged = be32_to_cpu(error->errors_logged);
965
966 ipr_err("Device Errors Detected/Logged: %d/%d\n",
967 be32_to_cpu(error->errors_detected), errors_logged);
968
969 dev_entry = error->dev_entry;
970
971 for (i = 0; i < errors_logged; i++, dev_entry++) {
972 ipr_err_separator;
973
974 if (dev_entry->dev_res_addr.bus >= IPR_MAX_NUM_BUSES) {
975 ipr_err("Device %d: missing\n", i + 1);
976 } else {
977 ipr_err("Device %d: %d:%d:%d:%d\n", i + 1,
978 ioa_cfg->host->host_no, dev_entry->dev_res_addr.bus,
979 dev_entry->dev_res_addr.target, dev_entry->dev_res_addr.lun);
980 }
981 ipr_log_vpd(&dev_entry->dev_vpids, dev_entry->dev_sn);
982
983 ipr_err("-----New Device Information-----\n");
984 ipr_log_vpd(&dev_entry->new_dev_vpids, dev_entry->new_dev_sn);
985
986 ipr_err("Cache Directory Card Information:\n");
987 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpids,
988 dev_entry->ioa_last_with_dev_sn);
989
990 ipr_err("Adapter Card Information:\n");
991 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpids,
992 dev_entry->cfc_last_with_dev_sn);
993
994 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
995 be32_to_cpu(dev_entry->ioa_data[0]),
996 be32_to_cpu(dev_entry->ioa_data[1]),
997 be32_to_cpu(dev_entry->ioa_data[2]),
998 be32_to_cpu(dev_entry->ioa_data[3]),
999 be32_to_cpu(dev_entry->ioa_data[4]));
1000 }
1001}
1002
1003/**
1004 * ipr_log_array_error - Log an array configuration error.
1005 * @ioa_cfg: ioa config struct
1006 * @hostrcb: hostrcb struct
1007 *
1008 * Return value:
1009 * none
1010 **/
1011static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1012 struct ipr_hostrcb *hostrcb)
1013{
1014 int i;
1015 struct ipr_hostrcb_type_04_error *error;
1016 struct ipr_hostrcb_array_data_entry *array_entry;
1017 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1018
1019 error = &hostrcb->hcam.u.error.u.type_04_error;
1020
1021 ipr_err_separator;
1022
1023 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1024 error->protection_level,
1025 ioa_cfg->host->host_no,
1026 error->last_func_vset_res_addr.bus,
1027 error->last_func_vset_res_addr.target,
1028 error->last_func_vset_res_addr.lun);
1029
1030 ipr_err_separator;
1031
1032 array_entry = error->array_member;
1033
1034 for (i = 0; i < 18; i++) {
1035 if (!memcmp(array_entry->serial_num, zero_sn, IPR_SERIAL_NUM_LEN))
1036 continue;
1037
1038 if (be32_to_cpu(error->exposed_mode_adn) == i) {
1039 ipr_err("Exposed Array Member %d:\n", i);
1040 } else {
1041 ipr_err("Array Member %d:\n", i);
1042 }
1043
1044 ipr_log_vpd(&array_entry->vpids, array_entry->serial_num);
1045
1046 if (array_entry->dev_res_addr.bus >= IPR_MAX_NUM_BUSES) {
1047 ipr_err("Current Location: unknown\n");
1048 } else {
1049 ipr_err("Current Location: %d:%d:%d:%d\n",
1050 ioa_cfg->host->host_no,
1051 array_entry->dev_res_addr.bus,
1052 array_entry->dev_res_addr.target,
1053 array_entry->dev_res_addr.lun);
1054 }
1055
1b69f645 1056 if (array_entry->expected_dev_res_addr.bus >= IPR_MAX_NUM_BUSES) {
1da177e4
LT		 1057 ipr_err("Expected Location: unknown\n");
1058 } else {
1059 ipr_err("Expected Location: %d:%d:%d:%d\n",
1060 ioa_cfg->host->host_no,
1061 array_entry->expected_dev_res_addr.bus,
1062 array_entry->expected_dev_res_addr.target,
1063 array_entry->expected_dev_res_addr.lun);
1064 }
1065
1066 ipr_err_separator;
1067
1068 if (i == 9)
1069 array_entry = error->array_member2;
1070 else
1071 array_entry++;
1072 }
1073}
1074
1075/**
1076 * ipr_log_generic_error - Log an adapter error.
1077 * @ioa_cfg: ioa config struct
1078 * @hostrcb: hostrcb struct
1079 *
1080 * Return value:
1081 * none
1082 **/
1083static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1084 struct ipr_hostrcb *hostrcb)
1085{
1086 int i;
1087 int ioa_data_len = be32_to_cpu(hostrcb->hcam.length);
1088
1089 if (ioa_data_len == 0)
1090 return;
1091
1092 ipr_err("IOA Error Data:\n");
1093 ipr_err("Offset 0 1 2 3 4 5 6 7 8 9 A B C D E F\n");
1094
1095 for (i = 0; i < ioa_data_len / 4; i += 4) {
1096 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1097 be32_to_cpu(hostrcb->hcam.u.raw.data[i]),
1098 be32_to_cpu(hostrcb->hcam.u.raw.data[i+1]),
1099 be32_to_cpu(hostrcb->hcam.u.raw.data[i+2]),
1100 be32_to_cpu(hostrcb->hcam.u.raw.data[i+3]));
1101 }
1102}
1103
1104/**
1105 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1106 * @ioasc: IOASC
1107 *
1108 * This function will return the index of into the ipr_error_table
1109 * for the specified IOASC. If the IOASC is not in the table,
1110 * 0 will be returned, which points to the entry used for unknown errors.
1111 *
1112 * Return value:
1113 * index into the ipr_error_table
1114 **/
1115static u32 ipr_get_error(u32 ioasc)
1116{
1117 int i;
1118
1119 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1120 if (ipr_error_table[i].ioasc == ioasc)
1121 return i;
1122
1123 return 0;
1124}
1125
1126/**
1127 * ipr_handle_log_data - Log an adapter error.
1128 * @ioa_cfg: ioa config struct
1129 * @hostrcb: hostrcb struct
1130 *
1131 * This function logs an adapter error to the system.
1132 *
1133 * Return value:
1134 * none
1135 **/
1136static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1137 struct ipr_hostrcb *hostrcb)
1138{
1139 u32 ioasc;
1140 int error_index;
1141
1142 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1143 return;
1144
1145 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1146 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1147
1148 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1149
1150 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1151 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1152 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1153 scsi_report_bus_reset(ioa_cfg->host,
1154 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1155 }
1156
1157 error_index = ipr_get_error(ioasc);
1158
1159 if (!ipr_error_table[error_index].log_hcam)
1160 return;
1161
1162 if (ipr_is_device(&hostrcb->hcam.u.error.failing_dev_res_addr)) {
1163 ipr_res_err(ioa_cfg, hostrcb->hcam.u.error.failing_dev_res_addr,
1164 "%s\n", ipr_error_table[error_index].error);
1165 } else {
1166 dev_err(&ioa_cfg->pdev->dev, "%s\n",
1167 ipr_error_table[error_index].error);
1168 }
1169
1170 /* Set indication we have logged an error */
1171 ioa_cfg->errors_logged++;
1172
1173 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
1174 return;
1175
1176 switch (hostrcb->hcam.overlay_id) {
1177 case IPR_HOST_RCB_OVERLAY_ID_1:
1178 ipr_log_generic_error(ioa_cfg, hostrcb);
1179 break;
1180 case IPR_HOST_RCB_OVERLAY_ID_2:
1181 ipr_log_cache_error(ioa_cfg, hostrcb);
1182 break;
1183 case IPR_HOST_RCB_OVERLAY_ID_3:
1184 ipr_log_config_error(ioa_cfg, hostrcb);
1185 break;
1186 case IPR_HOST_RCB_OVERLAY_ID_4:
1187 case IPR_HOST_RCB_OVERLAY_ID_6:
1188 ipr_log_array_error(ioa_cfg, hostrcb);
1189 break;
1190 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1191 ipr_log_generic_error(ioa_cfg, hostrcb);
1192 break;
1193 default:
1194 dev_err(&ioa_cfg->pdev->dev,
1195 "Unknown error received. Overlay ID: %d\n",
1196 hostrcb->hcam.overlay_id);
1197 break;
1198 }
1199}
1200
1201/**
1202 * ipr_process_error - Op done function for an adapter error log.
1203 * @ipr_cmd: ipr command struct
1204 *
1205 * This function is the op done function for an error log host
1206 * controlled async from the adapter. It will log the error and
1207 * send the HCAM back to the adapter.
1208 *
1209 * Return value:
1210 * none
1211 **/
1212static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1213{
1214 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1215 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1216 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1217
1218 list_del(&hostrcb->queue);
1219 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1220
1221 if (!ioasc) {
1222 ipr_handle_log_data(ioa_cfg, hostrcb);
1223 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1224 dev_err(&ioa_cfg->pdev->dev,
1225 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1226 }
1227
1228 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1229}
1230
1231/**
1232 * ipr_timeout - An internally generated op has timed out.
1233 * @ipr_cmd: ipr command struct
1234 *
1235 * This function blocks host requests and initiates an
1236 * adapter reset.
1237 *
1238 * Return value:
1239 * none
1240 **/
1241static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1242{
1243 unsigned long lock_flags = 0;
1244 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1245
1246 ENTER;
1247 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1248
1249 ioa_cfg->errors_logged++;
1250 dev_err(&ioa_cfg->pdev->dev,
1251 "Adapter being reset due to command timeout.\n");
1252
1253 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1254 ioa_cfg->sdt_state = GET_DUMP;
1255
1256 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1257 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1258
1259 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1260 LEAVE;
1261}
1262
1263/**
1264 * ipr_oper_timeout - Adapter timed out transitioning to operational
1265 * @ipr_cmd: ipr command struct
1266 *
1267 * This function blocks host requests and initiates an
1268 * adapter reset.
1269 *
1270 * Return value:
1271 * none
1272 **/
1273static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1274{
1275 unsigned long lock_flags = 0;
1276 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1277
1278 ENTER;
1279 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1280
1281 ioa_cfg->errors_logged++;
1282 dev_err(&ioa_cfg->pdev->dev,
1283 "Adapter timed out transitioning to operational.\n");
1284
1285 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1286 ioa_cfg->sdt_state = GET_DUMP;
1287
1288 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1289 if (ipr_fastfail)
1290 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1291 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1292 }
1293
1294 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1295 LEAVE;
1296}
1297
1298/**
1299 * ipr_reset_reload - Reset/Reload the IOA
1300 * @ioa_cfg: ioa config struct
1301 * @shutdown_type: shutdown type
1302 *
1303 * This function resets the adapter and re-initializes it.
1304 * This function assumes that all new host commands have been stopped.
1305 * Return value:
1306 * SUCCESS / FAILED
1307 **/
1308static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1309 enum ipr_shutdown_type shutdown_type)
1310{
1311 if (!ioa_cfg->in_reset_reload)
1312 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1313
1314 spin_unlock_irq(ioa_cfg->host->host_lock);
1315 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1316 spin_lock_irq(ioa_cfg->host->host_lock);
1317
1318 /* If we got hit with a host reset while we were already resetting
1319 the adapter for some reason, and the reset failed. */
1320 if (ioa_cfg->ioa_is_dead) {
1321 ipr_trace;
1322 return FAILED;
1323 }
1324
1325 return SUCCESS;
1326}
1327
1328/**
1329 * ipr_find_ses_entry - Find matching SES in SES table
1330 * @res: resource entry struct of SES
1331 *
1332 * Return value:
1333 * pointer to SES table entry / NULL on failure
1334 **/
1335static const struct ipr_ses_table_entry *
1336ipr_find_ses_entry(struct ipr_resource_entry *res)
1337{
1338 int i, j, matches;
1339 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1340
1341 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1342 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1343 if (ste->compare_product_id_byte[j] == 'X') {
1344 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1345 matches++;
1346 else
1347 break;
1348 } else
1349 matches++;
1350 }
1351
1352 if (matches == IPR_PROD_ID_LEN)
1353 return ste;
1354 }
1355
1356 return NULL;
1357}
1358
1359/**
1360 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1361 * @ioa_cfg: ioa config struct
1362 * @bus: SCSI bus
1363 * @bus_width: bus width
1364 *
1365 * Return value:
1366 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1367 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1368 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1369 * max 160MHz = max 320MB/sec).
1370 **/
1371static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1372{
1373 struct ipr_resource_entry *res;
1374 const struct ipr_ses_table_entry *ste;
1375 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1376
1377 /* Loop through each config table entry in the config table buffer */
1378 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1379 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1380 continue;
1381
1382 if (bus != res->cfgte.res_addr.bus)
1383 continue;
1384
1385 if (!(ste = ipr_find_ses_entry(res)))
1386 continue;
1387
1388 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1389 }
1390
1391 return max_xfer_rate;
1392}
1393
1394/**
1395 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1396 * @ioa_cfg: ioa config struct
1397 * @max_delay: max delay in micro-seconds to wait
1398 *
1399 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1400 *
1401 * Return value:
1402 * 0 on success / other on failure
1403 **/
1404static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1405{
1406 volatile u32 pcii_reg;
1407 int delay = 1;
1408
1409 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1410 while (delay < max_delay) {
1411 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1412
1413 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1414 return 0;
1415
1416 /* udelay cannot be used if delay is more than a few milliseconds */
1417 if ((delay / 1000) > MAX_UDELAY_MS)
1418 mdelay(delay / 1000);
1419 else
1420 udelay(delay);
1421
1422 delay += delay;
1423 }
1424 return -EIO;
1425}
1426
1427/**
1428 * ipr_get_ldump_data_section - Dump IOA memory
1429 * @ioa_cfg: ioa config struct
1430 * @start_addr: adapter address to dump
1431 * @dest: destination kernel buffer
1432 * @length_in_words: length to dump in 4 byte words
1433 *
1434 * Return value:
1435 * 0 on success / -EIO on failure
1436 **/
1437static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1438 u32 start_addr,
1439 __be32 *dest, u32 length_in_words)
1440{
1441 volatile u32 temp_pcii_reg;
1442 int i, delay = 0;
1443
1444 /* Write IOA interrupt reg starting LDUMP state */
1445 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1446 ioa_cfg->regs.set_uproc_interrupt_reg);
1447
1448 /* Wait for IO debug acknowledge */
1449 if (ipr_wait_iodbg_ack(ioa_cfg,
1450 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1451 dev_err(&ioa_cfg->pdev->dev,
1452 "IOA dump long data transfer timeout\n");
1453 return -EIO;
1454 }
1455
1456 /* Signal LDUMP interlocked - clear IO debug ack */
1457 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1458 ioa_cfg->regs.clr_interrupt_reg);
1459
1460 /* Write Mailbox with starting address */
1461 writel(start_addr, ioa_cfg->ioa_mailbox);
1462
1463 /* Signal address valid - clear IOA Reset alert */
1464 writel(IPR_UPROCI_RESET_ALERT,
1465 ioa_cfg->regs.clr_uproc_interrupt_reg);
1466
1467 for (i = 0; i < length_in_words; i++) {
1468 /* Wait for IO debug acknowledge */
1469 if (ipr_wait_iodbg_ack(ioa_cfg,
1470 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1471 dev_err(&ioa_cfg->pdev->dev,
1472 "IOA dump short data transfer timeout\n");
1473 return -EIO;
1474 }
1475
1476 /* Read data from mailbox and increment destination pointer */
1477 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1478 dest++;
1479
1480 /* For all but the last word of data, signal data received */
1481 if (i < (length_in_words - 1)) {
1482 /* Signal dump data received - Clear IO debug Ack */
1483 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1484 ioa_cfg->regs.clr_interrupt_reg);
1485 }
1486 }
1487
1488 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1489 writel(IPR_UPROCI_RESET_ALERT,
1490 ioa_cfg->regs.set_uproc_interrupt_reg);
1491
1492 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1493 ioa_cfg->regs.clr_uproc_interrupt_reg);
1494
1495 /* Signal dump data received - Clear IO debug Ack */
1496 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1497 ioa_cfg->regs.clr_interrupt_reg);
1498
1499 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
1500 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
1501 temp_pcii_reg =
1502 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
1503
1504 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
1505 return 0;
1506
1507 udelay(10);
1508 delay += 10;
1509 }
1510
1511 return 0;
1512}
1513
1514#ifdef CONFIG_SCSI_IPR_DUMP
1515/**
1516 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
1517 * @ioa_cfg: ioa config struct
1518 * @pci_address: adapter address
1519 * @length: length of data to copy
1520 *
1521 * Copy data from PCI adapter to kernel buffer.
1522 * Note: length MUST be a 4 byte multiple
1523 * Return value:
1524 * 0 on success / other on failure
1525 **/
1526static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
1527 unsigned long pci_address, u32 length)
1528{
1529 int bytes_copied = 0;
1530 int cur_len, rc, rem_len, rem_page_len;
1531 __be32 *page;
1532 unsigned long lock_flags = 0;
1533 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
1534
1535 while (bytes_copied < length &&
1536 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
1537 if (ioa_dump->page_offset >= PAGE_SIZE ||
1538 ioa_dump->page_offset == 0) {
1539 page = (__be32 *)__get_free_page(GFP_ATOMIC);
1540
1541 if (!page) {
1542 ipr_trace;
1543 return bytes_copied;
1544 }
1545
1546 ioa_dump->page_offset = 0;
1547 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
1548 ioa_dump->next_page_index++;
1549 } else
1550 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
1551
1552 rem_len = length - bytes_copied;
1553 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
1554 cur_len = min(rem_len, rem_page_len);
1555
1556 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1557 if (ioa_cfg->sdt_state == ABORT_DUMP) {
1558 rc = -EIO;
1559 } else {
1560 rc = ipr_get_ldump_data_section(ioa_cfg,
1561 pci_address + bytes_copied,
1562 &page[ioa_dump->page_offset / 4],
1563 (cur_len / sizeof(u32)));
1564 }
1565 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1566
1567 if (!rc) {
1568 ioa_dump->page_offset += cur_len;
1569 bytes_copied += cur_len;
1570 } else {
1571 ipr_trace;
1572 break;
1573 }
1574 schedule();
1575 }
1576
1577 return bytes_copied;
1578}
1579
1580/**
1581 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
1582 * @hdr: dump entry header struct
1583 *
1584 * Return value:
1585 * nothing
1586 **/
1587static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
1588{
1589 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
1590 hdr->num_elems = 1;
1591 hdr->offset = sizeof(*hdr);
1592 hdr->status = IPR_DUMP_STATUS_SUCCESS;
1593}
1594
1595/**
1596 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
1597 * @ioa_cfg: ioa config struct
1598 * @driver_dump: driver dump struct
1599 *
1600 * Return value:
1601 * nothing
1602 **/
1603static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
1604 struct ipr_driver_dump *driver_dump)
1605{
1606 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
1607
1608 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
1609 driver_dump->ioa_type_entry.hdr.len =
1610 sizeof(struct ipr_dump_ioa_type_entry) -
1611 sizeof(struct ipr_dump_entry_header);
1612 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1613 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
1614 driver_dump->ioa_type_entry.type = ioa_cfg->type;
1615 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
1616 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
1617 ucode_vpd->minor_release[1];
1618 driver_dump->hdr.num_entries++;
1619}
1620
1621/**
1622 * ipr_dump_version_data - Fill in the driver version in the dump.
1623 * @ioa_cfg: ioa config struct
1624 * @driver_dump: driver dump struct
1625 *
1626 * Return value:
1627 * nothing
1628 **/
1629static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
1630 struct ipr_driver_dump *driver_dump)
1631{
1632 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
1633 driver_dump->version_entry.hdr.len =
1634 sizeof(struct ipr_dump_version_entry) -
1635 sizeof(struct ipr_dump_entry_header);
1636 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1637 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
1638 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
1639 driver_dump->hdr.num_entries++;
1640}
1641
1642/**
1643 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
1644 * @ioa_cfg: ioa config struct
1645 * @driver_dump: driver dump struct
1646 *
1647 * Return value:
1648 * nothing
1649 **/
1650static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
1651 struct ipr_driver_dump *driver_dump)
1652{
1653 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
1654 driver_dump->trace_entry.hdr.len =
1655 sizeof(struct ipr_dump_trace_entry) -
1656 sizeof(struct ipr_dump_entry_header);
1657 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1658 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
1659 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
1660 driver_dump->hdr.num_entries++;
1661}
1662
1663/**
1664 * ipr_dump_location_data - Fill in the IOA location in the dump.
1665 * @ioa_cfg: ioa config struct
1666 * @driver_dump: driver dump struct
1667 *
1668 * Return value:
1669 * nothing
1670 **/
1671static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
1672 struct ipr_driver_dump *driver_dump)
1673{
1674 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
1675 driver_dump->location_entry.hdr.len =
1676 sizeof(struct ipr_dump_location_entry) -
1677 sizeof(struct ipr_dump_entry_header);
1678 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1679 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
1680 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
1681 driver_dump->hdr.num_entries++;
1682}
1683
1684/**
1685 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
1686 * @ioa_cfg: ioa config struct
1687 * @dump: dump struct
1688 *
1689 * Return value:
1690 * nothing
1691 **/
1692static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
1693{
1694 unsigned long start_addr, sdt_word;
1695 unsigned long lock_flags = 0;
1696 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
1697 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
1698 u32 num_entries, start_off, end_off;
1699 u32 bytes_to_copy, bytes_copied, rc;
1700 struct ipr_sdt *sdt;
1701 int i;
1702
1703 ENTER;
1704
1705 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1706
1707 if (ioa_cfg->sdt_state != GET_DUMP) {
1708 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1709 return;
1710 }
1711
1712 start_addr = readl(ioa_cfg->ioa_mailbox);
1713
1714 if (!ipr_sdt_is_fmt2(start_addr)) {
1715 dev_err(&ioa_cfg->pdev->dev,
1716 "Invalid dump table format: %lx\n", start_addr);
1717 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1718 return;
1719 }
1720
1721 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
1722
1723 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
1724
1725 /* Initialize the overall dump header */
1726 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
1727 driver_dump->hdr.num_entries = 1;
1728 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
1729 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
1730 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
1731 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
1732
1733 ipr_dump_version_data(ioa_cfg, driver_dump);
1734 ipr_dump_location_data(ioa_cfg, driver_dump);
1735 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
1736 ipr_dump_trace_data(ioa_cfg, driver_dump);
1737
1738 /* Update dump_header */
1739 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
1740
1741 /* IOA Dump entry */
1742 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
1743 ioa_dump->format = IPR_SDT_FMT2;
1744 ioa_dump->hdr.len = 0;
1745 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1746 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
1747
1748 /* First entries in sdt are actually a list of dump addresses and
1749 lengths to gather the real dump data. sdt represents the pointer
1750 to the ioa generated dump table. Dump data will be extracted based
1751 on entries in this table */
1752 sdt = &ioa_dump->sdt;
1753
1754 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
1755 sizeof(struct ipr_sdt) / sizeof(__be32));
1756
1757 /* Smart Dump table is ready to use and the first entry is valid */
1758 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
1759 dev_err(&ioa_cfg->pdev->dev,
1760 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
1761 rc, be32_to_cpu(sdt->hdr.state));
1762 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
1763 ioa_cfg->sdt_state = DUMP_OBTAINED;
1764 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1765 return;
1766 }
1767
1768 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
1769
1770 if (num_entries > IPR_NUM_SDT_ENTRIES)
1771 num_entries = IPR_NUM_SDT_ENTRIES;
1772
1773 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1774
1775 for (i = 0; i < num_entries; i++) {
1776 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
1777 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
1778 break;
1779 }
1780
1781 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
1782 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
1783 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
1784 end_off = be32_to_cpu(sdt->entry[i].end_offset);
1785
1786 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
1787 bytes_to_copy = end_off - start_off;
1788 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
1789 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
1790 continue;
1791 }
1792
1793 /* Copy data from adapter to driver buffers */
1794 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
1795 bytes_to_copy);
1796
1797 ioa_dump->hdr.len += bytes_copied;
1798
1799 if (bytes_copied != bytes_to_copy) {
1800 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
1801 break;
1802 }
1803 }
1804 }
1805 }
1806
1807 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
1808
1809 /* Update dump_header */
1810 driver_dump->hdr.len += ioa_dump->hdr.len;
1811 wmb();
1812 ioa_cfg->sdt_state = DUMP_OBTAINED;
1813 LEAVE;
1814}
1815
1816#else
1817#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
1818#endif
1819
1820/**
1821 * ipr_release_dump - Free adapter dump memory
1822 * @kref: kref struct
1823 *
1824 * Return value:
1825 * nothing
1826 **/
1827static void ipr_release_dump(struct kref *kref)
1828{
1829 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
1830 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
1831 unsigned long lock_flags = 0;
1832 int i;
1833
1834 ENTER;
1835 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1836 ioa_cfg->dump = NULL;
1837 ioa_cfg->sdt_state = INACTIVE;
1838 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1839
1840 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
1841 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
1842
1843 kfree(dump);
1844 LEAVE;
1845}
1846
1847/**
1848 * ipr_worker_thread - Worker thread
1849 * @data: ioa config struct
1850 *
1851 * Called at task level from a work thread. This function takes care
1852 * of adding and removing device from the mid-layer as configuration
1853 * changes are detected by the adapter.
1854 *
1855 * Return value:
1856 * nothing
1857 **/
1858static void ipr_worker_thread(void *data)
1859{
1860 unsigned long lock_flags;
1861 struct ipr_resource_entry *res;
1862 struct scsi_device *sdev;
1863 struct ipr_dump *dump;
1864 struct ipr_ioa_cfg *ioa_cfg = data;
1865 u8 bus, target, lun;
1866 int did_work;
1867
1868 ENTER;
1869 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1870
1871 if (ioa_cfg->sdt_state == GET_DUMP) {
1872 dump = ioa_cfg->dump;
1873 if (!dump) {
1874 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1875 return;
1876 }
1877 kref_get(&dump->kref);
1878 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1879 ipr_get_ioa_dump(ioa_cfg, dump);
1880 kref_put(&dump->kref, ipr_release_dump);
1881
1882 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1883 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
1884 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1885 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1886 return;
1887 }
1888
1889restart:
1890 do {
1891 did_work = 0;
1892 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
1893 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1894 return;
1895 }
1896
1897 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1898 if (res->del_from_ml && res->sdev) {
1899 did_work = 1;
1900 sdev = res->sdev;
1901 if (!scsi_device_get(sdev)) {
1902 res->sdev = NULL;
1903 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1904 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1905 scsi_remove_device(sdev);
1906 scsi_device_put(sdev);
1907 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1908 }
1909 break;
1910 }
1911 }
1912 } while(did_work);
1913
1914 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1915 if (res->add_to_ml) {
1916 bus = res->cfgte.res_addr.bus;
1917 target = res->cfgte.res_addr.target;
1918 lun = res->cfgte.res_addr.lun;
1919 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1920 scsi_add_device(ioa_cfg->host, bus, target, lun);
1921 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1922 goto restart;
1923 }
1924 }
1925
1926 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1927 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE, NULL);
1928 LEAVE;
1929}
1930
1931#ifdef CONFIG_SCSI_IPR_TRACE
1932/**
1933 * ipr_read_trace - Dump the adapter trace
1934 * @kobj: kobject struct
1935 * @buf: buffer
1936 * @off: offset
1937 * @count: buffer size
1938 *
1939 * Return value:
1940 * number of bytes printed to buffer
1941 **/
1942static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
1943 loff_t off, size_t count)
1944{
1945 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
1946 struct Scsi_Host *shost = class_to_shost(cdev);
1947 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
1948 unsigned long lock_flags = 0;
1949 int size = IPR_TRACE_SIZE;
1950 char *src = (char *)ioa_cfg->trace;
1951
1952 if (off > size)
1953 return 0;
1954 if (off + count > size) {
1955 size -= off;
1956 count = size;
1957 }
1958
1959 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1960 memcpy(buf, &src[off], count);
1961 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1962 return count;
1963}
1964
1965static struct bin_attribute ipr_trace_attr = {
1966 .attr = {
1967 .name = "trace",
1968 .mode = S_IRUGO,
1969 },
1970 .size = 0,
1971 .read = ipr_read_trace,
1972};
1973#endif
1974
1975/**
1976 * ipr_show_fw_version - Show the firmware version
1977 * @class_dev: class device struct
1978 * @buf: buffer
1979 *
1980 * Return value:
1981 * number of bytes printed to buffer
1982 **/
1983static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
1984{
1985 struct Scsi_Host *shost = class_to_shost(class_dev);
1986 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
1987 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
1988 unsigned long lock_flags = 0;
1989 int len;
1990
1991 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1992 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
1993 ucode_vpd->major_release, ucode_vpd->card_type,
1994 ucode_vpd->minor_release[0],
1995 ucode_vpd->minor_release[1]);
1996 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1997 return len;
1998}
1999
2000static struct class_device_attribute ipr_fw_version_attr = {
2001 .attr = {
2002 .name = "fw_version",
2003 .mode = S_IRUGO,
2004 },
2005 .show = ipr_show_fw_version,
2006};
2007
2008/**
2009 * ipr_show_log_level - Show the adapter's error logging level
2010 * @class_dev: class device struct
2011 * @buf: buffer
2012 *
2013 * Return value:
2014 * number of bytes printed to buffer
2015 **/
2016static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2017{
2018 struct Scsi_Host *shost = class_to_shost(class_dev);
2019 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2020 unsigned long lock_flags = 0;
2021 int len;
2022
2023 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2024 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2025 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2026 return len;
2027}
2028
2029/**
2030 * ipr_store_log_level - Change the adapter's error logging level
2031 * @class_dev: class device struct
2032 * @buf: buffer
2033 *
2034 * Return value:
2035 * number of bytes printed to buffer
2036 **/
2037static ssize_t ipr_store_log_level(struct class_device *class_dev,
2038 const char *buf, size_t count)
2039{
2040 struct Scsi_Host *shost = class_to_shost(class_dev);
2041 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2042 unsigned long lock_flags = 0;
2043
2044 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2045 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2046 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2047 return strlen(buf);
2048}
2049
2050static struct class_device_attribute ipr_log_level_attr = {
2051 .attr = {
2052 .name = "log_level",
2053 .mode = S_IRUGO | S_IWUSR,
2054 },
2055 .show = ipr_show_log_level,
2056 .store = ipr_store_log_level
2057};
2058
2059/**
2060 * ipr_store_diagnostics - IOA Diagnostics interface
2061 * @class_dev: class_device struct
2062 * @buf: buffer
2063 * @count: buffer size
2064 *
2065 * This function will reset the adapter and wait a reasonable
2066 * amount of time for any errors that the adapter might log.
2067 *
2068 * Return value:
2069 * count on success / other on failure
2070 **/
2071static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2072 const char *buf, size_t count)
2073{
2074 struct Scsi_Host *shost = class_to_shost(class_dev);
2075 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2076 unsigned long lock_flags = 0;
2077 int rc = count;
2078
2079 if (!capable(CAP_SYS_ADMIN))
2080 return -EACCES;
2081
2082 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2083 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2084 ioa_cfg->errors_logged = 0;
2085 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2086
2087 if (ioa_cfg->in_reset_reload) {
2088 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2089 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2090
2091 /* Wait for a second for any errors to be logged */
2092 msleep(1000);
2093 } else {
2094 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2095 return -EIO;
2096 }
2097
2098 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2099 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2100 rc = -EIO;
2101 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2102
2103 return rc;
2104}
2105
2106static struct class_device_attribute ipr_diagnostics_attr = {
2107 .attr = {
2108 .name = "run_diagnostics",
2109 .mode = S_IWUSR,
2110 },
2111 .store = ipr_store_diagnostics
2112};
2113
2114/**
2115 * ipr_store_reset_adapter - Reset the adapter
2116 * @class_dev: class_device struct
2117 * @buf: buffer
2118 * @count: buffer size
2119 *
2120 * This function will reset the adapter.
2121 *
2122 * Return value:
2123 * count on success / other on failure
2124 **/
2125static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2126 const char *buf, size_t count)
2127{
2128 struct Scsi_Host *shost = class_to_shost(class_dev);
2129 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2130 unsigned long lock_flags;
2131 int result = count;
2132
2133 if (!capable(CAP_SYS_ADMIN))
2134 return -EACCES;
2135
2136 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2137 if (!ioa_cfg->in_reset_reload)
2138 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2139 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2140 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2141
2142 return result;
2143}
2144
2145static struct class_device_attribute ipr_ioa_reset_attr = {
2146 .attr = {
2147 .name = "reset_host",
2148 .mode = S_IWUSR,
2149 },
2150 .store = ipr_store_reset_adapter
2151};
2152
2153/**
2154 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2155 * @buf_len: buffer length
2156 *
2157 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2158 * list to use for microcode download
2159 *
2160 * Return value:
2161 * pointer to sglist / NULL on failure
2162 **/
2163static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2164{
2165 int sg_size, order, bsize_elem, num_elem, i, j;
2166 struct ipr_sglist *sglist;
2167 struct scatterlist *scatterlist;
2168 struct page *page;
2169
2170 /* Get the minimum size per scatter/gather element */
2171 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2172
2173 /* Get the actual size per element */
2174 order = get_order(sg_size);
2175
2176 /* Determine the actual number of bytes per element */
2177 bsize_elem = PAGE_SIZE * (1 << order);
2178
2179 /* Determine the actual number of sg entries needed */
2180 if (buf_len % bsize_elem)
2181 num_elem = (buf_len / bsize_elem) + 1;
2182 else
2183 num_elem = buf_len / bsize_elem;
2184
2185 /* Allocate a scatter/gather list for the DMA */
2186 sglist = kmalloc(sizeof(struct ipr_sglist) +
2187 (sizeof(struct scatterlist) * (num_elem - 1)),
2188 GFP_KERNEL);
2189
2190 if (sglist == NULL) {
2191 ipr_trace;
2192 return NULL;
2193 }
2194
2195 memset(sglist, 0, sizeof(struct ipr_sglist) +
2196 (sizeof(struct scatterlist) * (num_elem - 1)));
2197
2198 scatterlist = sglist->scatterlist;
2199
2200 sglist->order = order;
2201 sglist->num_sg = num_elem;
2202
2203 /* Allocate a bunch of sg elements */
2204 for (i = 0; i < num_elem; i++) {
2205 page = alloc_pages(GFP_KERNEL, order);
2206 if (!page) {
2207 ipr_trace;
2208
2209 /* Free up what we already allocated */
2210 for (j = i - 1; j >= 0; j--)
2211 __free_pages(scatterlist[j].page, order);
2212 kfree(sglist);
2213 return NULL;
2214 }
2215
2216 scatterlist[i].page = page;
2217 }
2218
2219 return sglist;
2220}
2221
2222/**
2223 * ipr_free_ucode_buffer - Frees a microcode download buffer
2224 * @p_dnld: scatter/gather list pointer
2225 *
2226 * Free a DMA'able ucode download buffer previously allocated with
2227 * ipr_alloc_ucode_buffer
2228 *
2229 * Return value:
2230 * nothing
2231 **/
2232static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2233{
2234 int i;
2235
2236 for (i = 0; i < sglist->num_sg; i++)
2237 __free_pages(sglist->scatterlist[i].page, sglist->order);
2238
2239 kfree(sglist);
2240}
2241
2242/**
2243 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2244 * @sglist: scatter/gather list pointer
2245 * @buffer: buffer pointer
2246 * @len: buffer length
2247 *
2248 * Copy a microcode image from a user buffer into a buffer allocated by
2249 * ipr_alloc_ucode_buffer
2250 *
2251 * Return value:
2252 * 0 on success / other on failure
2253 **/
2254static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2255 u8 *buffer, u32 len)
2256{
2257 int bsize_elem, i, result = 0;
2258 struct scatterlist *scatterlist;
2259 void *kaddr;
2260
2261 /* Determine the actual number of bytes per element */
2262 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2263
2264 scatterlist = sglist->scatterlist;
2265
2266 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2267 kaddr = kmap(scatterlist[i].page);
2268 memcpy(kaddr, buffer, bsize_elem);
2269 kunmap(scatterlist[i].page);
2270
2271 scatterlist[i].length = bsize_elem;
2272
2273 if (result != 0) {
2274 ipr_trace;
2275 return result;
2276 }
2277 }
2278
2279 if (len % bsize_elem) {
2280 kaddr = kmap(scatterlist[i].page);
2281 memcpy(kaddr, buffer, len % bsize_elem);
2282 kunmap(scatterlist[i].page);
2283
2284 scatterlist[i].length = len % bsize_elem;
2285 }
2286
2287 sglist->buffer_len = len;
2288 return result;
2289}
2290
2291/**
2292 * ipr_map_ucode_buffer - Map a microcode download buffer
2293 * @ipr_cmd: ipr command struct
2294 * @sglist: scatter/gather list
2295 * @len: total length of download buffer
2296 *
2297 * Maps a microcode download scatter/gather list for DMA and
2298 * builds the IOADL.
2299 *
2300 * Return value:
2301 * 0 on success / -EIO on failure
2302 **/
2303static int ipr_map_ucode_buffer(struct ipr_cmnd *ipr_cmd,
2304 struct ipr_sglist *sglist, int len)
2305{
2306 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2307 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2308 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2309 struct scatterlist *scatterlist = sglist->scatterlist;
2310 int i;
2311
2312 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, scatterlist,
2313 sglist->num_sg, DMA_TO_DEVICE);
2314
2315 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
2316 ioarcb->write_data_transfer_length = cpu_to_be32(len);
2317 ioarcb->write_ioadl_len =
2318 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2319
2320 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2321 ioadl[i].flags_and_data_len =
2322 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2323 ioadl[i].address =
2324 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2325 }
2326
2327 if (likely(ipr_cmd->dma_use_sg)) {
2328 ioadl[i-1].flags_and_data_len |=
2329 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2330 }
2331 else {
2332 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
2333 return -EIO;
2334 }
2335
2336 return 0;
2337}
2338
2339/**
2340 * ipr_store_update_fw - Update the firmware on the adapter
2341 * @class_dev: class_device struct
2342 * @buf: buffer
2343 * @count: buffer size
2344 *
2345 * This function will update the firmware on the adapter.
2346 *
2347 * Return value:
2348 * count on success / other on failure
2349 **/
2350static ssize_t ipr_store_update_fw(struct class_device *class_dev,
2351 const char *buf, size_t count)
2352{
2353 struct Scsi_Host *shost = class_to_shost(class_dev);
2354 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2355 struct ipr_ucode_image_header *image_hdr;
2356 const struct firmware *fw_entry;
2357 struct ipr_sglist *sglist;
2358 unsigned long lock_flags;
2359 char fname[100];
2360 char *src;
2361 int len, result, dnld_size;
2362
2363 if (!capable(CAP_SYS_ADMIN))
2364 return -EACCES;
2365
2366 len = snprintf(fname, 99, "%s", buf);
2367 fname[len-1] = '\0';
2368
2369 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
2370 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
2371 return -EIO;
2372 }
2373
2374 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
2375
2376 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
2377 (ioa_cfg->vpd_cbs->page3_data.card_type &&
2378 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
2379 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
2380 release_firmware(fw_entry);
2381 return -EINVAL;
2382 }
2383
2384 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
2385 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
2386 sglist = ipr_alloc_ucode_buffer(dnld_size);
2387
2388 if (!sglist) {
2389 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
2390 release_firmware(fw_entry);
2391 return -ENOMEM;
2392 }
2393
2394 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
2395
2396 if (result) {
2397 dev_err(&ioa_cfg->pdev->dev,
2398 "Microcode buffer copy to DMA buffer failed\n");
2399 ipr_free_ucode_buffer(sglist);
2400 release_firmware(fw_entry);
2401 return result;
2402 }
2403
2404 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2405
2406 if (ioa_cfg->ucode_sglist) {
2407 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2408 dev_err(&ioa_cfg->pdev->dev,
2409 "Microcode download already in progress\n");
2410 ipr_free_ucode_buffer(sglist);
2411 release_firmware(fw_entry);
2412 return -EIO;
2413 }
2414
2415 ioa_cfg->ucode_sglist = sglist;
2416 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2417 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2418 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2419
2420 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2421 ioa_cfg->ucode_sglist = NULL;
2422 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2423
2424 ipr_free_ucode_buffer(sglist);
2425 release_firmware(fw_entry);
2426
2427 return count;
2428}
2429
2430static struct class_device_attribute ipr_update_fw_attr = {
2431 .attr = {
2432 .name = "update_fw",
2433 .mode = S_IWUSR,
2434 },
2435 .store = ipr_store_update_fw
2436};
2437
2438static struct class_device_attribute *ipr_ioa_attrs[] = {
2439 &ipr_fw_version_attr,
2440 &ipr_log_level_attr,
2441 &ipr_diagnostics_attr,
2442 &ipr_ioa_reset_attr,
2443 &ipr_update_fw_attr,
2444 NULL,
2445};
2446
2447#ifdef CONFIG_SCSI_IPR_DUMP
2448/**
2449 * ipr_read_dump - Dump the adapter
2450 * @kobj: kobject struct
2451 * @buf: buffer
2452 * @off: offset
2453 * @count: buffer size
2454 *
2455 * Return value:
2456 * number of bytes printed to buffer
2457 **/
2458static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
2459 loff_t off, size_t count)
2460{
2461 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2462 struct Scsi_Host *shost = class_to_shost(cdev);
2463 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2464 struct ipr_dump *dump;
2465 unsigned long lock_flags = 0;
2466 char *src;
2467 int len;
2468 size_t rc = count;
2469
2470 if (!capable(CAP_SYS_ADMIN))
2471 return -EACCES;
2472
2473 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2474 dump = ioa_cfg->dump;
2475
2476 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
2477 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2478 return 0;
2479 }
2480 kref_get(&dump->kref);
2481 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2482
2483 if (off > dump->driver_dump.hdr.len) {
2484 kref_put(&dump->kref, ipr_release_dump);
2485 return 0;
2486 }
2487
2488 if (off + count > dump->driver_dump.hdr.len) {
2489 count = dump->driver_dump.hdr.len - off;
2490 rc = count;
2491 }
2492
2493 if (count && off < sizeof(dump->driver_dump)) {
2494 if (off + count > sizeof(dump->driver_dump))
2495 len = sizeof(dump->driver_dump) - off;
2496 else
2497 len = count;
2498 src = (u8 *)&dump->driver_dump + off;
2499 memcpy(buf, src, len);
2500 buf += len;
2501 off += len;
2502 count -= len;
2503 }
2504
2505 off -= sizeof(dump->driver_dump);
2506
2507 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
2508 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
2509 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
2510 else
2511 len = count;
2512 src = (u8 *)&dump->ioa_dump + off;
2513 memcpy(buf, src, len);
2514 buf += len;
2515 off += len;
2516 count -= len;
2517 }
2518
2519 off -= offsetof(struct ipr_ioa_dump, ioa_data);
2520
2521 while (count) {
2522 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
2523 len = PAGE_ALIGN(off) - off;
2524 else
2525 len = count;
2526 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
2527 src += off & ~PAGE_MASK;
2528 memcpy(buf, src, len);
2529 buf += len;
2530 off += len;
2531 count -= len;
2532 }
2533
2534 kref_put(&dump->kref, ipr_release_dump);
2535 return rc;
2536}
2537
2538/**
2539 * ipr_alloc_dump - Prepare for adapter dump
2540 * @ioa_cfg: ioa config struct
2541 *
2542 * Return value:
2543 * 0 on success / other on failure
2544 **/
2545static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
2546{
2547 struct ipr_dump *dump;
2548 unsigned long lock_flags = 0;
2549
2550 ENTER;
2551 dump = kmalloc(sizeof(struct ipr_dump), GFP_KERNEL);
2552
2553 if (!dump) {
2554 ipr_err("Dump memory allocation failed\n");
2555 return -ENOMEM;
2556 }
2557
2558 memset(dump, 0, sizeof(struct ipr_dump));
2559 kref_init(&dump->kref);
2560 dump->ioa_cfg = ioa_cfg;
2561
2562 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2563
2564 if (INACTIVE != ioa_cfg->sdt_state) {
2565 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2566 kfree(dump);
2567 return 0;
2568 }
2569
2570 ioa_cfg->dump = dump;
2571 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
2572 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
2573 ioa_cfg->dump_taken = 1;
2574 schedule_work(&ioa_cfg->work_q);
2575 }
2576 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2577
2578 LEAVE;
2579 return 0;
2580}
2581
2582/**
2583 * ipr_free_dump - Free adapter dump memory
2584 * @ioa_cfg: ioa config struct
2585 *
2586 * Return value:
2587 * 0 on success / other on failure
2588 **/
2589static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
2590{
2591 struct ipr_dump *dump;
2592 unsigned long lock_flags = 0;
2593
2594 ENTER;
2595
2596 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2597 dump = ioa_cfg->dump;
2598 if (!dump) {
2599 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2600 return 0;
2601 }
2602
2603 ioa_cfg->dump = NULL;
2604 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2605
2606 kref_put(&dump->kref, ipr_release_dump);
2607
2608 LEAVE;
2609 return 0;
2610}
2611
2612/**
2613 * ipr_write_dump - Setup dump state of adapter
2614 * @kobj: kobject struct
2615 * @buf: buffer
2616 * @off: offset
2617 * @count: buffer size
2618 *
2619 * Return value:
2620 * number of bytes printed to buffer
2621 **/
2622static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
2623 loff_t off, size_t count)
2624{
2625 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2626 struct Scsi_Host *shost = class_to_shost(cdev);
2627 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2628 int rc;
2629
2630 if (!capable(CAP_SYS_ADMIN))
2631 return -EACCES;
2632
2633 if (buf[0] == '1')
2634 rc = ipr_alloc_dump(ioa_cfg);
2635 else if (buf[0] == '0')
2636 rc = ipr_free_dump(ioa_cfg);
2637 else
2638 return -EINVAL;
2639
2640 if (rc)
2641 return rc;
2642 else
2643 return count;
2644}
2645
2646static struct bin_attribute ipr_dump_attr = {
2647 .attr = {
2648 .name = "dump",
2649 .mode = S_IRUSR | S_IWUSR,
2650 },
2651 .size = 0,
2652 .read = ipr_read_dump,
2653 .write = ipr_write_dump
2654};
2655#else
2656static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
2657#endif
2658
2659/**
2660 * ipr_change_queue_depth - Change the device's queue depth
2661 * @sdev: scsi device struct
2662 * @qdepth: depth to set
2663 *
2664 * Return value:
2665 * actual depth set
2666 **/
2667static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
2668{
2669 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
2670 return sdev->queue_depth;
2671}
2672
2673/**
2674 * ipr_change_queue_type - Change the device's queue type
2675 * @dsev: scsi device struct
2676 * @tag_type: type of tags to use
2677 *
2678 * Return value:
2679 * actual queue type set
2680 **/
2681static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
2682{
2683 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
2684 struct ipr_resource_entry *res;
2685 unsigned long lock_flags = 0;
2686
2687 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2688 res = (struct ipr_resource_entry *)sdev->hostdata;
2689
2690 if (res) {
2691 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
2692 /*
2693 * We don't bother quiescing the device here since the
2694 * adapter firmware does it for us.
2695 */
2696 scsi_set_tag_type(sdev, tag_type);
2697
2698 if (tag_type)
2699 scsi_activate_tcq(sdev, sdev->queue_depth);
2700 else
2701 scsi_deactivate_tcq(sdev, sdev->queue_depth);
2702 } else
2703 tag_type = 0;
2704 } else
2705 tag_type = 0;
2706
2707 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2708 return tag_type;
2709}
2710
2711/**
2712 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
2713 * @dev: device struct
2714 * @buf: buffer
2715 *
2716 * Return value:
2717 * number of bytes printed to buffer
2718 **/
10523b3b 2719static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 2720{
2721 struct scsi_device *sdev = to_scsi_device(dev);
2722 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
2723 struct ipr_resource_entry *res;
2724 unsigned long lock_flags = 0;
2725 ssize_t len = -ENXIO;
2726
2727 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2728 res = (struct ipr_resource_entry *)sdev->hostdata;
2729 if (res)
2730 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
2731 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2732 return len;
2733}
2734
2735static struct device_attribute ipr_adapter_handle_attr = {
2736 .attr = {
2737 .name = "adapter_handle",
2738 .mode = S_IRUSR,
2739 },
2740 .show = ipr_show_adapter_handle
2741};
2742
2743static struct device_attribute *ipr_dev_attrs[] = {
2744 &ipr_adapter_handle_attr,
2745 NULL,
2746};
2747
2748/**
2749 * ipr_biosparam - Return the HSC mapping
2750 * @sdev: scsi device struct
2751 * @block_device: block device pointer
2752 * @capacity: capacity of the device
2753 * @parm: Array containing returned HSC values.
2754 *
2755 * This function generates the HSC parms that fdisk uses.
2756 * We want to make sure we return something that places partitions
2757 * on 4k boundaries for best performance with the IOA.
2758 *
2759 * Return value:
2760 * 0 on success
2761 **/
2762static int ipr_biosparam(struct scsi_device *sdev,
2763 struct block_device *block_device,
2764 sector_t capacity, int *parm)
2765{
2766 int heads, sectors;
2767 sector_t cylinders;
2768
2769 heads = 128;
2770 sectors = 32;
2771
2772 cylinders = capacity;
2773 sector_div(cylinders, (128 * 32));
2774
2775 /* return result */
2776 parm[0] = heads;
2777 parm[1] = sectors;
2778 parm[2] = cylinders;
2779
2780 return 0;
2781}
2782
2783/**
2784 * ipr_slave_destroy - Unconfigure a SCSI device
2785 * @sdev: scsi device struct
2786 *
2787 * Return value:
2788 * nothing
2789 **/
2790static void ipr_slave_destroy(struct scsi_device *sdev)
2791{
2792 struct ipr_resource_entry *res;
2793 struct ipr_ioa_cfg *ioa_cfg;
2794 unsigned long lock_flags = 0;
2795
2796 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
2797
2798 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2799 res = (struct ipr_resource_entry *) sdev->hostdata;
2800 if (res) {
2801 sdev->hostdata = NULL;
2802 res->sdev = NULL;
2803 }
2804 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2805}
2806
2807/**
2808 * ipr_slave_configure - Configure a SCSI device
2809 * @sdev: scsi device struct
2810 *
2811 * This function configures the specified scsi device.
2812 *
2813 * Return value:
2814 * 0 on success
2815 **/
2816static int ipr_slave_configure(struct scsi_device *sdev)
2817{
2818 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
2819 struct ipr_resource_entry *res;
2820 unsigned long lock_flags = 0;
2821
2822 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2823 res = sdev->hostdata;
2824 if (res) {
2825 if (ipr_is_af_dasd_device(res))
2826 sdev->type = TYPE_RAID;
2827 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res))
2828 sdev->scsi_level = 4;
2829 if (ipr_is_vset_device(res)) {
2830 sdev->timeout = IPR_VSET_RW_TIMEOUT;
2831 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
2832 }
2833 if (IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data))
2834 sdev->allow_restart = 1;
2835 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
2836 }
2837 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2838 return 0;
2839}
2840
2841/**
2842 * ipr_slave_alloc - Prepare for commands to a device.
2843 * @sdev: scsi device struct
2844 *
2845 * This function saves a pointer to the resource entry
2846 * in the scsi device struct if the device exists. We
2847 * can then use this pointer in ipr_queuecommand when
2848 * handling new commands.
2849 *
2850 * Return value:
2851 * 0 on success
2852 **/
2853static int ipr_slave_alloc(struct scsi_device *sdev)
2854{
2855 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
2856 struct ipr_resource_entry *res;
2857 unsigned long lock_flags;
2858
2859 sdev->hostdata = NULL;
2860
2861 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2862
2863 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2864 if ((res->cfgte.res_addr.bus == sdev->channel) &&
2865 (res->cfgte.res_addr.target == sdev->id) &&
2866 (res->cfgte.res_addr.lun == sdev->lun)) {
2867 res->sdev = sdev;
2868 res->add_to_ml = 0;
2869 res->in_erp = 0;
2870 sdev->hostdata = res;
2871 res->needs_sync_complete = 1;
2872 break;
2873 }
2874 }
2875
2876 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2877
2878 return 0;
2879}
2880
2881/**
2882 * ipr_eh_host_reset - Reset the host adapter
2883 * @scsi_cmd: scsi command struct
2884 *
2885 * Return value:
2886 * SUCCESS / FAILED
2887 **/
df0ae249 2888static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 2889{
2890 struct ipr_ioa_cfg *ioa_cfg;
2891 int rc;
2892
2893 ENTER;
2894 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
2895
2896 dev_err(&ioa_cfg->pdev->dev,
2897 "Adapter being reset as a result of error recovery.\n");
2898
2899 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2900 ioa_cfg->sdt_state = GET_DUMP;
2901
2902 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2903
2904 LEAVE;
2905 return rc;
2906}
2907
df0ae249
JG		 2908static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
2909{
2910 int rc;
2911
2912 spin_lock_irq(cmd->device->host->host_lock);
2913 rc = __ipr_eh_host_reset(cmd);
2914 spin_unlock_irq(cmd->device->host->host_lock);
2915
2916 return rc;
2917}
2918
1da177e4
LT		 2919/**
2920 * ipr_eh_dev_reset - Reset the device
2921 * @scsi_cmd: scsi command struct
2922 *
2923 * This function issues a device reset to the affected device.
2924 * A LUN reset will be sent to the device first. If that does
2925 * not work, a target reset will be sent.
2926 *
2927 * Return value:
2928 * SUCCESS / FAILED
2929 **/
94d0e7b8 2930static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 2931{
2932 struct ipr_cmnd *ipr_cmd;
2933 struct ipr_ioa_cfg *ioa_cfg;
2934 struct ipr_resource_entry *res;
2935 struct ipr_cmd_pkt *cmd_pkt;
2936 u32 ioasc;
2937
2938 ENTER;
2939 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
2940 res = scsi_cmd->device->hostdata;
2941
2942 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
2943 return FAILED;
2944
2945 /*
2946 * If we are currently going through reset/reload, return failed. This will force the
2947 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
2948 * reset to complete
2949 */
2950 if (ioa_cfg->in_reset_reload)
2951 return FAILED;
2952 if (ioa_cfg->ioa_is_dead)
2953 return FAILED;
2954
2955 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
2956 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
2957 if (ipr_cmd->scsi_cmd)
2958 ipr_cmd->done = ipr_scsi_eh_done;
2959 }
2960 }
2961
2962 res->resetting_device = 1;
2963
2964 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
2965
2966 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
2967 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
2968 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
2969 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
2970
2971 ipr_sdev_err(scsi_cmd->device, "Resetting device\n");
2972 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
2973
2974 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
2975
2976 res->resetting_device = 0;
2977
2978 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2979
2980 LEAVE;
2981 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
2982}
2983
94d0e7b8
JG		 2984static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
2985{
2986 int rc;
2987
2988 spin_lock_irq(cmd->device->host->host_lock);
2989 rc = __ipr_eh_dev_reset(cmd);
2990 spin_unlock_irq(cmd->device->host->host_lock);
2991
2992 return rc;
2993}
2994
1da177e4
LT		 2995/**
2996 * ipr_bus_reset_done - Op done function for bus reset.
2997 * @ipr_cmd: ipr command struct
2998 *
2999 * This function is the op done function for a bus reset
3000 *
3001 * Return value:
3002 * none
3003 **/
3004static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3005{
3006 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3007 struct ipr_resource_entry *res;
3008
3009 ENTER;
3010 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3011 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3012 sizeof(res->cfgte.res_handle))) {
3013 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3014 break;
3015 }
3016 }
3017
3018 /*
3019 * If abort has not completed, indicate the reset has, else call the
3020 * abort's done function to wake the sleeping eh thread
3021 */
3022 if (ipr_cmd->sibling->sibling)
3023 ipr_cmd->sibling->sibling = NULL;
3024 else
3025 ipr_cmd->sibling->done(ipr_cmd->sibling);
3026
3027 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3028 LEAVE;
3029}
3030
3031/**
3032 * ipr_abort_timeout - An abort task has timed out
3033 * @ipr_cmd: ipr command struct
3034 *
3035 * This function handles when an abort task times out. If this
3036 * happens we issue a bus reset since we have resources tied
3037 * up that must be freed before returning to the midlayer.
3038 *
3039 * Return value:
3040 * none
3041 **/
3042static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
3043{
3044 struct ipr_cmnd *reset_cmd;
3045 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3046 struct ipr_cmd_pkt *cmd_pkt;
3047 unsigned long lock_flags = 0;
3048
3049 ENTER;
3050 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3051 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
3052 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3053 return;
3054 }
3055
3056 ipr_sdev_err(ipr_cmd->u.sdev, "Abort timed out. Resetting bus\n");
3057 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3058 ipr_cmd->sibling = reset_cmd;
3059 reset_cmd->sibling = ipr_cmd;
3060 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
3061 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
3062 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3063 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3064 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
3065
3066 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3067 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3068 LEAVE;
3069}
3070
3071/**
3072 * ipr_cancel_op - Cancel specified op
3073 * @scsi_cmd: scsi command struct
3074 *
3075 * This function cancels specified op.
3076 *
3077 * Return value:
3078 * SUCCESS / FAILED
3079 **/
3080static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
3081{
3082 struct ipr_cmnd *ipr_cmd;
3083 struct ipr_ioa_cfg *ioa_cfg;
3084 struct ipr_resource_entry *res;
3085 struct ipr_cmd_pkt *cmd_pkt;
3086 u32 ioasc;
3087 int op_found = 0;
3088
3089 ENTER;
3090 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3091 res = scsi_cmd->device->hostdata;
3092
8fa728a2
JG		 3093 /* If we are currently going through reset/reload, return failed.
3094 * This will force the mid-layer to call ipr_eh_host_reset,
3095 * which will then go to sleep and wait for the reset to complete
3096 */
3097 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
3098 return FAILED;
1da177e4
LT		 3099 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
3100 return FAILED;
3101
3102 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3103 if (ipr_cmd->scsi_cmd == scsi_cmd) {
3104 ipr_cmd->done = ipr_scsi_eh_done;
3105 op_found = 1;
3106 break;
3107 }
3108 }
3109
3110 if (!op_found)
3111 return SUCCESS;
3112
3113 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3114 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
3115 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3116 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3117 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3118 ipr_cmd->u.sdev = scsi_cmd->device;
3119
3120 ipr_sdev_err(scsi_cmd->device, "Aborting command: %02X\n", scsi_cmd->cmnd[0]);
3121 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
3122 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3123
3124 /*
3125 * If the abort task timed out and we sent a bus reset, we will get
3126 * one the following responses to the abort
3127 */
3128 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
3129 ioasc = 0;
3130 ipr_trace;
3131 }
3132
3133 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3134 res->needs_sync_complete = 1;
3135
3136 LEAVE;
3137 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
3138}
3139
3140/**
3141 * ipr_eh_abort - Abort a single op
3142 * @scsi_cmd: scsi command struct
3143 *
3144 * Return value:
3145 * SUCCESS / FAILED
3146 **/
3147static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
3148{
8fa728a2
JG		 3149 unsigned long flags;
3150 int rc;
1da177e4
LT		 3151
3152 ENTER;
1da177e4 3153
8fa728a2
JG		 3154 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
3155 rc = ipr_cancel_op(scsi_cmd);
3156 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
1da177e4
LT		 3157
3158 LEAVE;
8fa728a2 3159 return rc;
1da177e4
LT		 3160}
3161
3162/**
3163 * ipr_handle_other_interrupt - Handle "other" interrupts
3164 * @ioa_cfg: ioa config struct
3165 * @int_reg: interrupt register
3166 *
3167 * Return value:
3168 * IRQ_NONE / IRQ_HANDLED
3169 **/
3170static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
3171 volatile u32 int_reg)
3172{
3173 irqreturn_t rc = IRQ_HANDLED;
3174
3175 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
3176 /* Mask the interrupt */
3177 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
3178
3179 /* Clear the interrupt */
3180 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
3181 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
3182
3183 list_del(&ioa_cfg->reset_cmd->queue);
3184 del_timer(&ioa_cfg->reset_cmd->timer);
3185 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
3186 } else {
3187 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
3188 ioa_cfg->ioa_unit_checked = 1;
3189 else
3190 dev_err(&ioa_cfg->pdev->dev,
3191 "Permanent IOA failure. 0x%08X\n", int_reg);
3192
3193 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3194 ioa_cfg->sdt_state = GET_DUMP;
3195
3196 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
3197 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3198 }
3199
3200 return rc;
3201}
3202
3203/**
3204 * ipr_isr - Interrupt service routine
3205 * @irq: irq number
3206 * @devp: pointer to ioa config struct
3207 * @regs: pt_regs struct
3208 *
3209 * Return value:
3210 * IRQ_NONE / IRQ_HANDLED
3211 **/
3212static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs)
3213{
3214 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
3215 unsigned long lock_flags = 0;
3216 volatile u32 int_reg, int_mask_reg;
3217 u32 ioasc;
3218 u16 cmd_index;
3219 struct ipr_cmnd *ipr_cmd;
3220 irqreturn_t rc = IRQ_NONE;
3221
3222 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3223
3224 /* If interrupts are disabled, ignore the interrupt */
3225 if (!ioa_cfg->allow_interrupts) {
3226 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3227 return IRQ_NONE;
3228 }
3229
3230 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
3231 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3232
3233 /* If an interrupt on the adapter did not occur, ignore it */
3234 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
3235 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3236 return IRQ_NONE;
3237 }
3238
3239 while (1) {
3240 ipr_cmd = NULL;
3241
3242 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
3243 ioa_cfg->toggle_bit) {
3244
3245 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
3246 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
3247
3248 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
3249 ioa_cfg->errors_logged++;
3250 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
3251
3252 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3253 ioa_cfg->sdt_state = GET_DUMP;
3254
3255 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3256 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3257 return IRQ_HANDLED;
3258 }
3259
3260 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
3261
3262 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3263
3264 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
3265
3266 list_del(&ipr_cmd->queue);
3267 del_timer(&ipr_cmd->timer);
3268 ipr_cmd->done(ipr_cmd);
3269
3270 rc = IRQ_HANDLED;
3271
3272 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
3273 ioa_cfg->hrrq_curr++;
3274 } else {
3275 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
3276 ioa_cfg->toggle_bit ^= 1u;
3277 }
3278 }
3279
3280 if (ipr_cmd != NULL) {
3281 /* Clear the PCI interrupt */
3282 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
3283 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3284 } else
3285 break;
3286 }
3287
3288 if (unlikely(rc == IRQ_NONE))
3289 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
3290
3291 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3292 return rc;
3293}
3294
3295/**
3296 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
3297 * @ioa_cfg: ioa config struct
3298 * @ipr_cmd: ipr command struct
3299 *
3300 * Return value:
3301 * 0 on success / -1 on failure
3302 **/
3303static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
3304 struct ipr_cmnd *ipr_cmd)
3305{
3306 int i;
3307 struct scatterlist *sglist;
3308 u32 length;
3309 u32 ioadl_flags = 0;
3310 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3311 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3312 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
3313
3314 length = scsi_cmd->request_bufflen;
3315
3316 if (length == 0)
3317 return 0;
3318
3319 if (scsi_cmd->use_sg) {
3320 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
3321 scsi_cmd->request_buffer,
3322 scsi_cmd->use_sg,
3323 scsi_cmd->sc_data_direction);
3324
3325 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3326 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3327 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3328 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3329 ioarcb->write_ioadl_len =
3330 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3331 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3332 ioadl_flags = IPR_IOADL_FLAGS_READ;
3333 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3334 ioarcb->read_ioadl_len =
3335 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3336 }
3337
3338 sglist = scsi_cmd->request_buffer;
3339
3340 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3341 ioadl[i].flags_and_data_len =
3342 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
3343 ioadl[i].address =
3344 cpu_to_be32(sg_dma_address(&sglist[i]));
3345 }
3346
3347 if (likely(ipr_cmd->dma_use_sg)) {
3348 ioadl[i-1].flags_and_data_len |=
3349 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3350 return 0;
3351 } else
3352 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
3353 } else {
3354 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3355 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3356 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3357 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3358 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3359 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3360 ioadl_flags = IPR_IOADL_FLAGS_READ;
3361 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3362 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3363 }
3364
3365 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
3366 scsi_cmd->request_buffer, length,
3367 scsi_cmd->sc_data_direction);
3368
3369 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
3370 ipr_cmd->dma_use_sg = 1;
3371 ioadl[0].flags_and_data_len =
3372 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
3373 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
3374 return 0;
3375 } else
3376 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
3377 }
3378
3379 return -1;
3380}
3381
3382/**
3383 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
3384 * @scsi_cmd: scsi command struct
3385 *
3386 * Return value:
3387 * task attributes
3388 **/
3389static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
3390{
3391 u8 tag[2];
3392 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
3393
3394 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
3395 switch (tag[0]) {
3396 case MSG_SIMPLE_TAG:
3397 rc = IPR_FLAGS_LO_SIMPLE_TASK;
3398 break;
3399 case MSG_HEAD_TAG:
3400 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
3401 break;
3402 case MSG_ORDERED_TAG:
3403 rc = IPR_FLAGS_LO_ORDERED_TASK;
3404 break;
3405 };
3406 }
3407
3408 return rc;
3409}
3410
3411/**
3412 * ipr_erp_done - Process completion of ERP for a device
3413 * @ipr_cmd: ipr command struct
3414 *
3415 * This function copies the sense buffer into the scsi_cmd
3416 * struct and pushes the scsi_done function.
3417 *
3418 * Return value:
3419 * nothing
3420 **/
3421static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
3422{
3423 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3424 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3425 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3426 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3427
3428 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3429 scsi_cmd->result |= (DID_ERROR << 16);
3430 ipr_sdev_err(scsi_cmd->device,
3431 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
3432 } else {
3433 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
3434 SCSI_SENSE_BUFFERSIZE);
3435 }
3436
3437 if (res) {
3438 res->needs_sync_complete = 1;
3439 res->in_erp = 0;
3440 }
3441 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3442 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3443 scsi_cmd->scsi_done(scsi_cmd);
3444}
3445
3446/**
3447 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
3448 * @ipr_cmd: ipr command struct
3449 *
3450 * Return value:
3451 * none
3452 **/
3453static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
3454{
3455 struct ipr_ioarcb *ioarcb;
3456 struct ipr_ioasa *ioasa;
3457
3458 ioarcb = &ipr_cmd->ioarcb;
3459 ioasa = &ipr_cmd->ioasa;
3460
3461 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
3462 ioarcb->write_data_transfer_length = 0;
3463 ioarcb->read_data_transfer_length = 0;
3464 ioarcb->write_ioadl_len = 0;
3465 ioarcb->read_ioadl_len = 0;
3466 ioasa->ioasc = 0;
3467 ioasa->residual_data_len = 0;
3468}
3469
3470/**
3471 * ipr_erp_request_sense - Send request sense to a device
3472 * @ipr_cmd: ipr command struct
3473 *
3474 * This function sends a request sense to a device as a result
3475 * of a check condition.
3476 *
3477 * Return value:
3478 * nothing
3479 **/
3480static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
3481{
3482 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3483 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3484
3485 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3486 ipr_erp_done(ipr_cmd);
3487 return;
3488 }
3489
3490 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3491
3492 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
3493 cmd_pkt->cdb[0] = REQUEST_SENSE;
3494 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
3495 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
3496 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
3497 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
3498
3499 ipr_cmd->ioadl[0].flags_and_data_len =
3500 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
3501 ipr_cmd->ioadl[0].address =
3502 cpu_to_be32(ipr_cmd->sense_buffer_dma);
3503
3504 ipr_cmd->ioarcb.read_ioadl_len =
3505 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3506 ipr_cmd->ioarcb.read_data_transfer_length =
3507 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
3508
3509 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
3510 IPR_REQUEST_SENSE_TIMEOUT * 2);
3511}
3512
3513/**
3514 * ipr_erp_cancel_all - Send cancel all to a device
3515 * @ipr_cmd: ipr command struct
3516 *
3517 * This function sends a cancel all to a device to clear the
3518 * queue. If we are running TCQ on the device, QERR is set to 1,
3519 * which means all outstanding ops have been dropped on the floor.
3520 * Cancel all will return them to us.
3521 *
3522 * Return value:
3523 * nothing
3524 **/
3525static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
3526{
3527 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3528 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3529 struct ipr_cmd_pkt *cmd_pkt;
3530
3531 res->in_erp = 1;
3532
3533 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3534
3535 if (!scsi_get_tag_type(scsi_cmd->device)) {
3536 ipr_erp_request_sense(ipr_cmd);
3537 return;
3538 }
3539
3540 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3541 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3542 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3543
3544 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
3545 IPR_CANCEL_ALL_TIMEOUT);
3546}
3547
3548/**
3549 * ipr_dump_ioasa - Dump contents of IOASA
3550 * @ioa_cfg: ioa config struct
3551 * @ipr_cmd: ipr command struct
3552 *
3553 * This function is invoked by the interrupt handler when ops
3554 * fail. It will log the IOASA if appropriate. Only called
3555 * for GPDD ops.
3556 *
3557 * Return value:
3558 * none
3559 **/
3560static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
3561 struct ipr_cmnd *ipr_cmd)
3562{
3563 int i;
3564 u16 data_len;
3565 u32 ioasc;
3566 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
3567 __be32 *ioasa_data = (__be32 *)ioasa;
3568 int error_index;
3569
3570 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
3571
3572 if (0 == ioasc)
3573 return;
3574
3575 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
3576 return;
3577
3578 error_index = ipr_get_error(ioasc);
3579
3580 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
3581 /* Don't log an error if the IOA already logged one */
3582 if (ioasa->ilid != 0)
3583 return;
3584
3585 if (ipr_error_table[error_index].log_ioasa == 0)
3586 return;
3587 }
3588
3589 ipr_sdev_err(ipr_cmd->scsi_cmd->device, "%s\n",
3590 ipr_error_table[error_index].error);
3591
3592 if ((ioasa->u.gpdd.end_state <= ARRAY_SIZE(ipr_gpdd_dev_end_states)) &&
3593 (ioasa->u.gpdd.bus_phase <= ARRAY_SIZE(ipr_gpdd_dev_bus_phases))) {
3594 ipr_sdev_err(ipr_cmd->scsi_cmd->device,
3595 "Device End state: %s Phase: %s\n",
3596 ipr_gpdd_dev_end_states[ioasa->u.gpdd.end_state],
3597 ipr_gpdd_dev_bus_phases[ioasa->u.gpdd.bus_phase]);
3598 }
3599
3600 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
3601 data_len = sizeof(struct ipr_ioasa);
3602 else
3603 data_len = be16_to_cpu(ioasa->ret_stat_len);
3604
3605 ipr_err("IOASA Dump:\n");
3606
3607 for (i = 0; i < data_len / 4; i += 4) {
3608 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
3609 be32_to_cpu(ioasa_data[i]),
3610 be32_to_cpu(ioasa_data[i+1]),
3611 be32_to_cpu(ioasa_data[i+2]),
3612 be32_to_cpu(ioasa_data[i+3]));
3613 }
3614}
3615
3616/**
3617 * ipr_gen_sense - Generate SCSI sense data from an IOASA
3618 * @ioasa: IOASA
3619 * @sense_buf: sense data buffer
3620 *
3621 * Return value:
3622 * none
3623 **/
3624static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
3625{
3626 u32 failing_lba;
3627 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
3628 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
3629 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
3630 u32 ioasc = be32_to_cpu(ioasa->ioasc);
3631
3632 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
3633
3634 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
3635 return;
3636
3637 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
3638
3639 if (ipr_is_vset_device(res) &&
3640 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
3641 ioasa->u.vset.failing_lba_hi != 0) {
3642 sense_buf[0] = 0x72;
3643 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
3644 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
3645 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
3646
3647 sense_buf[7] = 12;
3648 sense_buf[8] = 0;
3649 sense_buf[9] = 0x0A;
3650 sense_buf[10] = 0x80;
3651
3652 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
3653
3654 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
3655 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
3656 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
3657 sense_buf[15] = failing_lba & 0x000000ff;
3658
3659 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
3660
3661 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
3662 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
3663 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
3664 sense_buf[19] = failing_lba & 0x000000ff;
3665 } else {
3666 sense_buf[0] = 0x70;
3667 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
3668 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
3669 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
3670
3671 /* Illegal request */
3672 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
3673 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
3674 sense_buf[7] = 10; /* additional length */
3675
3676 /* IOARCB was in error */
3677 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
3678 sense_buf[15] = 0xC0;
3679 else /* Parameter data was invalid */
3680 sense_buf[15] = 0x80;
3681
3682 sense_buf[16] =
3683 ((IPR_FIELD_POINTER_MASK &
3684 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
3685 sense_buf[17] =
3686 (IPR_FIELD_POINTER_MASK &
3687 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
3688 } else {
3689 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
3690 if (ipr_is_vset_device(res))
3691 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
3692 else
3693 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
3694
3695 sense_buf[0] |= 0x80; /* Or in the Valid bit */
3696 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
3697 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
3698 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
3699 sense_buf[6] = failing_lba & 0x000000ff;
3700 }
3701
3702 sense_buf[7] = 6; /* additional length */
3703 }
3704 }
3705}
3706
3707/**
3708 * ipr_erp_start - Process an error response for a SCSI op
3709 * @ioa_cfg: ioa config struct
3710 * @ipr_cmd: ipr command struct
3711 *
3712 * This function determines whether or not to initiate ERP
3713 * on the affected device.
3714 *
3715 * Return value:
3716 * nothing
3717 **/
3718static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
3719 struct ipr_cmnd *ipr_cmd)
3720{
3721 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3722 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3723 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3724
3725 if (!res) {
3726 ipr_scsi_eh_done(ipr_cmd);
3727 return;
3728 }
3729
3730 if (ipr_is_gscsi(res))
3731 ipr_dump_ioasa(ioa_cfg, ipr_cmd);
3732 else
3733 ipr_gen_sense(ipr_cmd);
3734
3735 switch (ioasc & IPR_IOASC_IOASC_MASK) {
3736 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
3737 scsi_cmd->result |= (DID_IMM_RETRY << 16);
3738 break;
3739 case IPR_IOASC_IR_RESOURCE_HANDLE:
3740 scsi_cmd->result |= (DID_NO_CONNECT << 16);
3741 break;
3742 case IPR_IOASC_HW_SEL_TIMEOUT:
3743 scsi_cmd->result |= (DID_NO_CONNECT << 16);
3744 res->needs_sync_complete = 1;
3745 break;
3746 case IPR_IOASC_SYNC_REQUIRED:
3747 if (!res->in_erp)
3748 res->needs_sync_complete = 1;
3749 scsi_cmd->result |= (DID_IMM_RETRY << 16);
3750 break;
3751 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
3752 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
3753 break;
3754 case IPR_IOASC_BUS_WAS_RESET:
3755 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
3756 /*
3757 * Report the bus reset and ask for a retry. The device
3758 * will give CC/UA the next command.
3759 */
3760 if (!res->resetting_device)
3761 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
3762 scsi_cmd->result |= (DID_ERROR << 16);
3763 res->needs_sync_complete = 1;
3764 break;
3765 case IPR_IOASC_HW_DEV_BUS_STATUS:
3766 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
3767 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
3768 ipr_erp_cancel_all(ipr_cmd);
3769 return;
3770 }
3771 res->needs_sync_complete = 1;
3772 break;
3773 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
3774 break;
3775 default:
3776 scsi_cmd->result |= (DID_ERROR << 16);
3777 if (!ipr_is_vset_device(res))
3778 res->needs_sync_complete = 1;
3779 break;
3780 }
3781
3782 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3783 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3784 scsi_cmd->scsi_done(scsi_cmd);
3785}
3786
3787/**
3788 * ipr_scsi_done - mid-layer done function
3789 * @ipr_cmd: ipr command struct
3790 *
3791 * This function is invoked by the interrupt handler for
3792 * ops generated by the SCSI mid-layer
3793 *
3794 * Return value:
3795 * none
3796 **/
3797static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
3798{
3799 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3800 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3801 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3802
3803 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
3804
3805 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
3806 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3807 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3808 scsi_cmd->scsi_done(scsi_cmd);
3809 } else
3810 ipr_erp_start(ioa_cfg, ipr_cmd);
3811}
3812
3813/**
3814 * ipr_save_ioafp_mode_select - Save adapters mode select data
3815 * @ioa_cfg: ioa config struct
3816 * @scsi_cmd: scsi command struct
3817 *
3818 * This function saves mode select data for the adapter to
3819 * use following an adapter reset.
3820 *
3821 * Return value:
3822 * 0 on success / SCSI_MLQUEUE_HOST_BUSY on failure
3823 **/
3824static int ipr_save_ioafp_mode_select(struct ipr_ioa_cfg *ioa_cfg,
3825 struct scsi_cmnd *scsi_cmd)
3826{
3827 if (!ioa_cfg->saved_mode_pages) {
3828 ioa_cfg->saved_mode_pages = kmalloc(sizeof(struct ipr_mode_pages),
3829 GFP_ATOMIC);
3830 if (!ioa_cfg->saved_mode_pages) {
3831 dev_err(&ioa_cfg->pdev->dev,
3832 "IOA mode select buffer allocation failed\n");
3833 return SCSI_MLQUEUE_HOST_BUSY;
3834 }
3835 }
3836
3837 memcpy(ioa_cfg->saved_mode_pages, scsi_cmd->buffer, scsi_cmd->cmnd[4]);
3838 ioa_cfg->saved_mode_page_len = scsi_cmd->cmnd[4];
3839 return 0;
3840}
3841
3842/**
3843 * ipr_queuecommand - Queue a mid-layer request
3844 * @scsi_cmd: scsi command struct
3845 * @done: done function
3846 *
3847 * This function queues a request generated by the mid-layer.
3848 *
3849 * Return value:
3850 * 0 on success
3851 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
3852 * SCSI_MLQUEUE_HOST_BUSY if host is busy
3853 **/
3854static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
3855 void (*done) (struct scsi_cmnd *))
3856{
3857 struct ipr_ioa_cfg *ioa_cfg;
3858 struct ipr_resource_entry *res;
3859 struct ipr_ioarcb *ioarcb;
3860 struct ipr_cmnd *ipr_cmd;
3861 int rc = 0;
3862
3863 scsi_cmd->scsi_done = done;
3864 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3865 res = scsi_cmd->device->hostdata;
3866 scsi_cmd->result = (DID_OK << 16);
3867
3868 /*
3869 * We are currently blocking all devices due to a host reset
3870 * We have told the host to stop giving us new requests, but
3871 * ERP ops don't count. FIXME
3872 */
3873 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
3874 return SCSI_MLQUEUE_HOST_BUSY;
3875
3876 /*
3877 * FIXME - Create scsi_set_host_offline interface
3878 * and the ioa_is_dead check can be removed
3879 */
3880 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
3881 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
3882 scsi_cmd->result = (DID_NO_CONNECT << 16);
3883 scsi_cmd->scsi_done(scsi_cmd);
3884 return 0;
3885 }
3886
3887 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3888 ioarcb = &ipr_cmd->ioarcb;
3889 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
3890
3891 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
3892 ipr_cmd->scsi_cmd = scsi_cmd;
3893 ioarcb->res_handle = res->cfgte.res_handle;
3894 ipr_cmd->done = ipr_scsi_done;
3895 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
3896
3897 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
3898 if (scsi_cmd->underflow == 0)
3899 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
3900
3901 if (res->needs_sync_complete) {
3902 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
3903 res->needs_sync_complete = 0;
3904 }
3905
3906 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
3907 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
3908 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
3909 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
3910 }
3911
3912 if (scsi_cmd->cmnd[0] >= 0xC0 &&
3913 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
3914 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
3915
3916 if (ipr_is_ioa_resource(res) && scsi_cmd->cmnd[0] == MODE_SELECT)
3917 rc = ipr_save_ioafp_mode_select(ioa_cfg, scsi_cmd);
3918
3919 if (likely(rc == 0))
3920 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
3921
3922 if (likely(rc == 0)) {
3923 mb();
3924 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
3925 ioa_cfg->regs.ioarrin_reg);
3926 } else {
3927 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3928 return SCSI_MLQUEUE_HOST_BUSY;
3929 }
3930
3931 return 0;
3932}
3933
3934/**
3935 * ipr_info - Get information about the card/driver
3936 * @scsi_host: scsi host struct
3937 *
3938 * Return value:
3939 * pointer to buffer with description string
3940 **/
3941static const char * ipr_ioa_info(struct Scsi_Host *host)
3942{
3943 static char buffer[512];
3944 struct ipr_ioa_cfg *ioa_cfg;
3945 unsigned long lock_flags = 0;
3946
3947 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
3948
3949 spin_lock_irqsave(host->host_lock, lock_flags);
3950 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
3951 spin_unlock_irqrestore(host->host_lock, lock_flags);
3952
3953 return buffer;
3954}
3955
3956static struct scsi_host_template driver_template = {
3957 .module = THIS_MODULE,
3958 .name = "IPR",
3959 .info = ipr_ioa_info,
3960 .queuecommand = ipr_queuecommand,
3961 .eh_abort_handler = ipr_eh_abort,
3962 .eh_device_reset_handler = ipr_eh_dev_reset,
3963 .eh_host_reset_handler = ipr_eh_host_reset,
3964 .slave_alloc = ipr_slave_alloc,
3965 .slave_configure = ipr_slave_configure,
3966 .slave_destroy = ipr_slave_destroy,
3967 .change_queue_depth = ipr_change_queue_depth,
3968 .change_queue_type = ipr_change_queue_type,
3969 .bios_param = ipr_biosparam,
3970 .can_queue = IPR_MAX_COMMANDS,
3971 .this_id = -1,
3972 .sg_tablesize = IPR_MAX_SGLIST,
3973 .max_sectors = IPR_IOA_MAX_SECTORS,
3974 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
3975 .use_clustering = ENABLE_CLUSTERING,
3976 .shost_attrs = ipr_ioa_attrs,
3977 .sdev_attrs = ipr_dev_attrs,
3978 .proc_name = IPR_NAME
3979};
3980
3981#ifdef CONFIG_PPC_PSERIES
3982static const u16 ipr_blocked_processors[] = {
3983 PV_NORTHSTAR,
3984 PV_PULSAR,
3985 PV_POWER4,
3986 PV_ICESTAR,
3987 PV_SSTAR,
3988 PV_POWER4p,
3989 PV_630,
3990 PV_630p
3991};
3992
3993/**
3994 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
3995 * @ioa_cfg: ioa cfg struct
3996 *
3997 * Adapters that use Gemstone revision < 3.1 do not work reliably on
3998 * certain pSeries hardware. This function determines if the given
3999 * adapter is in one of these confgurations or not.
4000 *
4001 * Return value:
4002 * 1 if adapter is not supported / 0 if adapter is supported
4003 **/
4004static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
4005{
4006 u8 rev_id;
4007 int i;
4008
4009 if (ioa_cfg->type == 0x5702) {
4010 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
4011 &rev_id) == PCIBIOS_SUCCESSFUL) {
4012 if (rev_id < 4) {
4013 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
4014 if (__is_processor(ipr_blocked_processors[i]))
4015 return 1;
4016 }
4017 }
4018 }
4019 }
4020 return 0;
4021}
4022#else
4023#define ipr_invalid_adapter(ioa_cfg) 0
4024#endif
4025
4026/**
4027 * ipr_ioa_bringdown_done - IOA bring down completion.
4028 * @ipr_cmd: ipr command struct
4029 *
4030 * This function processes the completion of an adapter bring down.
4031 * It wakes any reset sleepers.
4032 *
4033 * Return value:
4034 * IPR_RC_JOB_RETURN
4035 **/
4036static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
4037{
4038 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4039
4040 ENTER;
4041 ioa_cfg->in_reset_reload = 0;
4042 ioa_cfg->reset_retries = 0;
4043 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4044 wake_up_all(&ioa_cfg->reset_wait_q);
4045
4046 spin_unlock_irq(ioa_cfg->host->host_lock);
4047 scsi_unblock_requests(ioa_cfg->host);
4048 spin_lock_irq(ioa_cfg->host->host_lock);
4049 LEAVE;
4050
4051 return IPR_RC_JOB_RETURN;
4052}
4053
4054/**
4055 * ipr_ioa_reset_done - IOA reset completion.
4056 * @ipr_cmd: ipr command struct
4057 *
4058 * This function processes the completion of an adapter reset.
4059 * It schedules any necessary mid-layer add/removes and
4060 * wakes any reset sleepers.
4061 *
4062 * Return value:
4063 * IPR_RC_JOB_RETURN
4064 **/
4065static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
4066{
4067 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4068 struct ipr_resource_entry *res;
4069 struct ipr_hostrcb *hostrcb, *temp;
4070 int i = 0;
4071
4072 ENTER;
4073 ioa_cfg->in_reset_reload = 0;
4074 ioa_cfg->allow_cmds = 1;
4075 ioa_cfg->reset_cmd = NULL;
4076
4077 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4078 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
4079 ipr_trace;
4080 break;
4081 }
4082 }
4083 schedule_work(&ioa_cfg->work_q);
4084
4085 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
4086 list_del(&hostrcb->queue);
4087 if (i++ < IPR_NUM_LOG_HCAMS)
4088 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
4089 else
4090 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
4091 }
4092
4093 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
4094
4095 ioa_cfg->reset_retries = 0;
4096 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4097 wake_up_all(&ioa_cfg->reset_wait_q);
4098
4099 spin_unlock_irq(ioa_cfg->host->host_lock);
4100 scsi_unblock_requests(ioa_cfg->host);
4101 spin_lock_irq(ioa_cfg->host->host_lock);
4102
4103 if (!ioa_cfg->allow_cmds)
4104 scsi_block_requests(ioa_cfg->host);
4105
4106 LEAVE;
4107 return IPR_RC_JOB_RETURN;
4108}
4109
4110/**
4111 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
4112 * @supported_dev: supported device struct
4113 * @vpids: vendor product id struct
4114 *
4115 * Return value:
4116 * none
4117 **/
4118static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
4119 struct ipr_std_inq_vpids *vpids)
4120{
4121 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
4122 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
4123 supported_dev->num_records = 1;
4124 supported_dev->data_length =
4125 cpu_to_be16(sizeof(struct ipr_supported_device));
4126 supported_dev->reserved = 0;
4127}
4128
4129/**
4130 * ipr_set_supported_devs - Send Set Supported Devices for a device
4131 * @ipr_cmd: ipr command struct
4132 *
4133 * This function send a Set Supported Devices to the adapter
4134 *
4135 * Return value:
4136 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4137 **/
4138static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
4139{
4140 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4141 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
4142 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4143 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4144 struct ipr_resource_entry *res = ipr_cmd->u.res;
4145
4146 ipr_cmd->job_step = ipr_ioa_reset_done;
4147
4148 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
4149 if (!ipr_is_af_dasd_device(res))
4150 continue;
4151
4152 ipr_cmd->u.res = res;
4153 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
4154
4155 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4156 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4157 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4158
4159 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
4160 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
4161 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
4162
4163 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
4164 sizeof(struct ipr_supported_device));
4165 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
4166 offsetof(struct ipr_misc_cbs, supp_dev));
4167 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4168 ioarcb->write_data_transfer_length =
4169 cpu_to_be32(sizeof(struct ipr_supported_device));
4170
4171 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
4172 IPR_SET_SUP_DEVICE_TIMEOUT);
4173
4174 ipr_cmd->job_step = ipr_set_supported_devs;
4175 return IPR_RC_JOB_RETURN;
4176 }
4177
4178 return IPR_RC_JOB_CONTINUE;
4179}
4180
4181/**
4182 * ipr_get_mode_page - Locate specified mode page
4183 * @mode_pages: mode page buffer
4184 * @page_code: page code to find
4185 * @len: minimum required length for mode page
4186 *
4187 * Return value:
4188 * pointer to mode page / NULL on failure
4189 **/
4190static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
4191 u32 page_code, u32 len)
4192{
4193 struct ipr_mode_page_hdr *mode_hdr;
4194 u32 page_length;
4195 u32 length;
4196
4197 if (!mode_pages || (mode_pages->hdr.length == 0))
4198 return NULL;
4199
4200 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
4201 mode_hdr = (struct ipr_mode_page_hdr *)
4202 (mode_pages->data + mode_pages->hdr.block_desc_len);
4203
4204 while (length) {
4205 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
4206 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
4207 return mode_hdr;
4208 break;
4209 } else {
4210 page_length = (sizeof(struct ipr_mode_page_hdr) +
4211 mode_hdr->page_length);
4212 length -= page_length;
4213 mode_hdr = (struct ipr_mode_page_hdr *)
4214 ((unsigned long)mode_hdr + page_length);
4215 }
4216 }
4217 return NULL;
4218}
4219
4220/**
4221 * ipr_check_term_power - Check for term power errors
4222 * @ioa_cfg: ioa config struct
4223 * @mode_pages: IOAFP mode pages buffer
4224 *
4225 * Check the IOAFP's mode page 28 for term power errors
4226 *
4227 * Return value:
4228 * nothing
4229 **/
4230static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
4231 struct ipr_mode_pages *mode_pages)
4232{
4233 int i;
4234 int entry_length;
4235 struct ipr_dev_bus_entry *bus;
4236 struct ipr_mode_page28 *mode_page;
4237
4238 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4239 sizeof(struct ipr_mode_page28));
4240
4241 entry_length = mode_page->entry_length;
4242
4243 bus = mode_page->bus;
4244
4245 for (i = 0; i < mode_page->num_entries; i++) {
4246 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
4247 dev_err(&ioa_cfg->pdev->dev,
4248 "Term power is absent on scsi bus %d\n",
4249 bus->res_addr.bus);
4250 }
4251
4252 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
4253 }
4254}
4255
4256/**
4257 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
4258 * @ioa_cfg: ioa config struct
4259 *
4260 * Looks through the config table checking for SES devices. If
4261 * the SES device is in the SES table indicating a maximum SCSI
4262 * bus speed, the speed is limited for the bus.
4263 *
4264 * Return value:
4265 * none
4266 **/
4267static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
4268{
4269 u32 max_xfer_rate;
4270 int i;
4271
4272 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
4273 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
4274 ioa_cfg->bus_attr[i].bus_width);
4275
4276 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
4277 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
4278 }
4279}
4280
4281/**
4282 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
4283 * @ioa_cfg: ioa config struct
4284 * @mode_pages: mode page 28 buffer
4285 *
4286 * Updates mode page 28 based on driver configuration
4287 *
4288 * Return value:
4289 * none
4290 **/
4291static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
4292 struct ipr_mode_pages *mode_pages)
4293{
4294 int i, entry_length;
4295 struct ipr_dev_bus_entry *bus;
4296 struct ipr_bus_attributes *bus_attr;
4297 struct ipr_mode_page28 *mode_page;
4298
4299 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4300 sizeof(struct ipr_mode_page28));
4301
4302 entry_length = mode_page->entry_length;
4303
4304 /* Loop for each device bus entry */
4305 for (i = 0, bus = mode_page->bus;
4306 i < mode_page->num_entries;
4307 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
4308 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
4309 dev_err(&ioa_cfg->pdev->dev,
4310 "Invalid resource address reported: 0x%08X\n",
4311 IPR_GET_PHYS_LOC(bus->res_addr));
4312 continue;
4313 }
4314
4315 bus_attr = &ioa_cfg->bus_attr[i];
4316 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
4317 bus->bus_width = bus_attr->bus_width;
4318 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
4319 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
4320 if (bus_attr->qas_enabled)
4321 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
4322 else
4323 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
4324 }
4325}
4326
4327/**
4328 * ipr_build_mode_select - Build a mode select command
4329 * @ipr_cmd: ipr command struct
4330 * @res_handle: resource handle to send command to
4331 * @parm: Byte 2 of Mode Sense command
4332 * @dma_addr: DMA buffer address
4333 * @xfer_len: data transfer length
4334 *
4335 * Return value:
4336 * none
4337 **/
4338static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
4339 __be32 res_handle, u8 parm, u32 dma_addr,
4340 u8 xfer_len)
4341{
4342 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4343 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4344
4345 ioarcb->res_handle = res_handle;
4346 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4347 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4348 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
4349 ioarcb->cmd_pkt.cdb[1] = parm;
4350 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4351
4352 ioadl->flags_and_data_len =
4353 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
4354 ioadl->address = cpu_to_be32(dma_addr);
4355 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4356 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
4357}
4358
4359/**
4360 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
4361 * @ipr_cmd: ipr command struct
4362 *
4363 * This function sets up the SCSI bus attributes and sends
4364 * a Mode Select for Page 28 to activate them.
4365 *
4366 * Return value:
4367 * IPR_RC_JOB_RETURN
4368 **/
4369static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
4370{
4371 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4372 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
4373 int length;
4374
4375 ENTER;
4376 if (ioa_cfg->saved_mode_pages) {
4377 memcpy(mode_pages, ioa_cfg->saved_mode_pages,
4378 ioa_cfg->saved_mode_page_len);
4379 length = ioa_cfg->saved_mode_page_len;
4380 } else {
4381 ipr_scsi_bus_speed_limit(ioa_cfg);
4382 ipr_check_term_power(ioa_cfg, mode_pages);
4383 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
4384 length = mode_pages->hdr.length + 1;
4385 mode_pages->hdr.length = 0;
4386 }
4387
4388 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
4389 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
4390 length);
4391
4392 ipr_cmd->job_step = ipr_set_supported_devs;
4393 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
4394 struct ipr_resource_entry, queue);
4395
4396 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4397
4398 LEAVE;
4399 return IPR_RC_JOB_RETURN;
4400}
4401
4402/**
4403 * ipr_build_mode_sense - Builds a mode sense command
4404 * @ipr_cmd: ipr command struct
4405 * @res: resource entry struct
4406 * @parm: Byte 2 of mode sense command
4407 * @dma_addr: DMA address of mode sense buffer
4408 * @xfer_len: Size of DMA buffer
4409 *
4410 * Return value:
4411 * none
4412 **/
4413static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
4414 __be32 res_handle,
4415 u8 parm, u32 dma_addr, u8 xfer_len)
4416{
4417 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4418 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4419
4420 ioarcb->res_handle = res_handle;
4421 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
4422 ioarcb->cmd_pkt.cdb[2] = parm;
4423 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4424 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4425
4426 ioadl->flags_and_data_len =
4427 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
4428 ioadl->address = cpu_to_be32(dma_addr);
4429 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4430 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
4431}
4432
4433/**
4434 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
4435 * @ipr_cmd: ipr command struct
4436 *
4437 * This function send a Page 28 mode sense to the IOA to
4438 * retrieve SCSI bus attributes.
4439 *
4440 * Return value:
4441 * IPR_RC_JOB_RETURN
4442 **/
4443static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
4444{
4445 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4446
4447 ENTER;
4448 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
4449 0x28, ioa_cfg->vpd_cbs_dma +
4450 offsetof(struct ipr_misc_cbs, mode_pages),
4451 sizeof(struct ipr_mode_pages));
4452
4453 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
4454
4455 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4456
4457 LEAVE;
4458 return IPR_RC_JOB_RETURN;
4459}
4460
4461/**
4462 * ipr_init_res_table - Initialize the resource table
4463 * @ipr_cmd: ipr command struct
4464 *
4465 * This function looks through the existing resource table, comparing
4466 * it with the config table. This function will take care of old/new
4467 * devices and schedule adding/removing them from the mid-layer
4468 * as appropriate.
4469 *
4470 * Return value:
4471 * IPR_RC_JOB_CONTINUE
4472 **/
4473static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
4474{
4475 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4476 struct ipr_resource_entry *res, *temp;
4477 struct ipr_config_table_entry *cfgte;
4478 int found, i;
4479 LIST_HEAD(old_res);
4480
4481 ENTER;
4482 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
4483 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
4484
4485 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
4486 list_move_tail(&res->queue, &old_res);
4487
4488 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
4489 cfgte = &ioa_cfg->cfg_table->dev[i];
4490 found = 0;
4491
4492 list_for_each_entry_safe(res, temp, &old_res, queue) {
4493 if (!memcmp(&res->cfgte.res_addr,
4494 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
4495 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4496 found = 1;
4497 break;
4498 }
4499 }
4500
4501 if (!found) {
4502 if (list_empty(&ioa_cfg->free_res_q)) {
4503 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
4504 break;
4505 }
4506
4507 found = 1;
4508 res = list_entry(ioa_cfg->free_res_q.next,
4509 struct ipr_resource_entry, queue);
4510 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4511 ipr_init_res_entry(res);
4512 res->add_to_ml = 1;
4513 }
4514
4515 if (found)
4516 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
4517 }
4518
4519 list_for_each_entry_safe(res, temp, &old_res, queue) {
4520 if (res->sdev) {
4521 res->del_from_ml = 1;
4522 res->sdev->hostdata = NULL;
4523 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4524 } else {
4525 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
4526 }
4527 }
4528
4529 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
4530
4531 LEAVE;
4532 return IPR_RC_JOB_CONTINUE;
4533}
4534
4535/**
4536 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
4537 * @ipr_cmd: ipr command struct
4538 *
4539 * This function sends a Query IOA Configuration command
4540 * to the adapter to retrieve the IOA configuration table.
4541 *
4542 * Return value:
4543 * IPR_RC_JOB_RETURN
4544 **/
4545static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
4546{
4547 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4548 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4549 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4550 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
4551
4552 ENTER;
4553 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
4554 ucode_vpd->major_release, ucode_vpd->card_type,
4555 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
4556 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4557 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4558
4559 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
4560 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
4561 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
4562
4563 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4564 ioarcb->read_data_transfer_length =
4565 cpu_to_be32(sizeof(struct ipr_config_table));
4566
4567 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
4568 ioadl->flags_and_data_len =
4569 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
4570
4571 ipr_cmd->job_step = ipr_init_res_table;
4572
4573 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4574
4575 LEAVE;
4576 return IPR_RC_JOB_RETURN;
4577}
4578
4579/**
4580 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
4581 * @ipr_cmd: ipr command struct
4582 *
4583 * This utility function sends an inquiry to the adapter.
4584 *
4585 * Return value:
4586 * none
4587 **/
4588static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
4589 u32 dma_addr, u8 xfer_len)
4590{
4591 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4592 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4593
4594 ENTER;
4595 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4596 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4597
4598 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
4599 ioarcb->cmd_pkt.cdb[1] = flags;
4600 ioarcb->cmd_pkt.cdb[2] = page;
4601 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4602
4603 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4604 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
4605
4606 ioadl->address = cpu_to_be32(dma_addr);
4607 ioadl->flags_and_data_len =
4608 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
4609
4610 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4611 LEAVE;
4612}
4613
4614/**
4615 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
4616 * @ipr_cmd: ipr command struct
4617 *
4618 * This function sends a Page 3 inquiry to the adapter
4619 * to retrieve software VPD information.
4620 *
4621 * Return value:
4622 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4623 **/
4624static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
4625{
4626 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4627 char type[5];
4628
4629 ENTER;
4630
4631 /* Grab the type out of the VPD and store it away */
4632 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
4633 type[4] = '\0';
4634 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
4635
4636 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
4637
4638 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
4639 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
4640 sizeof(struct ipr_inquiry_page3));
4641
4642 LEAVE;
4643 return IPR_RC_JOB_RETURN;
4644}
4645
4646/**
4647 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
4648 * @ipr_cmd: ipr command struct
4649 *
4650 * This function sends a standard inquiry to the adapter.
4651 *
4652 * Return value:
4653 * IPR_RC_JOB_RETURN
4654 **/
4655static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
4656{
4657 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4658
4659 ENTER;
4660 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
4661
4662 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
4663 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
4664 sizeof(struct ipr_ioa_vpd));
4665
4666 LEAVE;
4667 return IPR_RC_JOB_RETURN;
4668}
4669
4670/**
4671 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
4672 * @ipr_cmd: ipr command struct
4673 *
4674 * This function send an Identify Host Request Response Queue
4675 * command to establish the HRRQ with the adapter.
4676 *
4677 * Return value:
4678 * IPR_RC_JOB_RETURN
4679 **/
4680static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
4681{
4682 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4683 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4684
4685 ENTER;
4686 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
4687
4688 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
4689 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4690
4691 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4692 ioarcb->cmd_pkt.cdb[2] =
4693 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
4694 ioarcb->cmd_pkt.cdb[3] =
4695 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
4696 ioarcb->cmd_pkt.cdb[4] =
4697 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
4698 ioarcb->cmd_pkt.cdb[5] =
4699 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
4700 ioarcb->cmd_pkt.cdb[7] =
4701 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
4702 ioarcb->cmd_pkt.cdb[8] =
4703 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
4704
4705 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
4706
4707 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4708
4709 LEAVE;
4710 return IPR_RC_JOB_RETURN;
4711}
4712
4713/**
4714 * ipr_reset_timer_done - Adapter reset timer function
4715 * @ipr_cmd: ipr command struct
4716 *
4717 * Description: This function is used in adapter reset processing
4718 * for timing events. If the reset_cmd pointer in the IOA
4719 * config struct is not this adapter's we are doing nested
4720 * resets and fail_all_ops will take care of freeing the
4721 * command block.
4722 *
4723 * Return value:
4724 * none
4725 **/
4726static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
4727{
4728 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4729 unsigned long lock_flags = 0;
4730
4731 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4732
4733 if (ioa_cfg->reset_cmd == ipr_cmd) {
4734 list_del(&ipr_cmd->queue);
4735 ipr_cmd->done(ipr_cmd);
4736 }
4737
4738 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4739}
4740
4741/**
4742 * ipr_reset_start_timer - Start a timer for adapter reset job
4743 * @ipr_cmd: ipr command struct
4744 * @timeout: timeout value
4745 *
4746 * Description: This function is used in adapter reset processing
4747 * for timing events. If the reset_cmd pointer in the IOA
4748 * config struct is not this adapter's we are doing nested
4749 * resets and fail_all_ops will take care of freeing the
4750 * command block.
4751 *
4752 * Return value:
4753 * none
4754 **/
4755static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
4756 unsigned long timeout)
4757{
4758 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
4759 ipr_cmd->done = ipr_reset_ioa_job;
4760
4761 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
4762 ipr_cmd->timer.expires = jiffies + timeout;
4763 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
4764 add_timer(&ipr_cmd->timer);
4765}
4766
4767/**
4768 * ipr_init_ioa_mem - Initialize ioa_cfg control block
4769 * @ioa_cfg: ioa cfg struct
4770 *
4771 * Return value:
4772 * nothing
4773 **/
4774static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
4775{
4776 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
4777
4778 /* Initialize Host RRQ pointers */
4779 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
4780 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
4781 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4782 ioa_cfg->toggle_bit = 1;
4783
4784 /* Zero out config table */
4785 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
4786}
4787
4788/**
4789 * ipr_reset_enable_ioa - Enable the IOA following a reset.
4790 * @ipr_cmd: ipr command struct
4791 *
4792 * This function reinitializes some control blocks and
4793 * enables destructive diagnostics on the adapter.
4794 *
4795 * Return value:
4796 * IPR_RC_JOB_RETURN
4797 **/
4798static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
4799{
4800 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4801 volatile u32 int_reg;
4802
4803 ENTER;
4804 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
4805 ipr_init_ioa_mem(ioa_cfg);
4806
4807 ioa_cfg->allow_interrupts = 1;
4808 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4809
4810 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4811 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
4812 ioa_cfg->regs.clr_interrupt_mask_reg);
4813 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4814 return IPR_RC_JOB_CONTINUE;
4815 }
4816
4817 /* Enable destructive diagnostics on IOA */
4818 writel(IPR_DOORBELL, ioa_cfg->regs.set_uproc_interrupt_reg);
4819
4820 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
4821 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4822
4823 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
4824
4825 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
4826 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ);
4827 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
4828 ipr_cmd->done = ipr_reset_ioa_job;
4829 add_timer(&ipr_cmd->timer);
4830 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4831
4832 LEAVE;
4833 return IPR_RC_JOB_RETURN;
4834}
4835
4836/**
4837 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
4838 * @ipr_cmd: ipr command struct
4839 *
4840 * This function is invoked when an adapter dump has run out
4841 * of processing time.
4842 *
4843 * Return value:
4844 * IPR_RC_JOB_CONTINUE
4845 **/
4846static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
4847{
4848 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4849
4850 if (ioa_cfg->sdt_state == GET_DUMP)
4851 ioa_cfg->sdt_state = ABORT_DUMP;
4852
4853 ipr_cmd->job_step = ipr_reset_alert;
4854
4855 return IPR_RC_JOB_CONTINUE;
4856}
4857
4858/**
4859 * ipr_unit_check_no_data - Log a unit check/no data error log
4860 * @ioa_cfg: ioa config struct
4861 *
4862 * Logs an error indicating the adapter unit checked, but for some
4863 * reason, we were unable to fetch the unit check buffer.
4864 *
4865 * Return value:
4866 * nothing
4867 **/
4868static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
4869{
4870 ioa_cfg->errors_logged++;
4871 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
4872}
4873
4874/**
4875 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
4876 * @ioa_cfg: ioa config struct
4877 *
4878 * Fetches the unit check buffer from the adapter by clocking the data
4879 * through the mailbox register.
4880 *
4881 * Return value:
4882 * nothing
4883 **/
4884static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
4885{
4886 unsigned long mailbox;
4887 struct ipr_hostrcb *hostrcb;
4888 struct ipr_uc_sdt sdt;
4889 int rc, length;
4890
4891 mailbox = readl(ioa_cfg->ioa_mailbox);
4892
4893 if (!ipr_sdt_is_fmt2(mailbox)) {
4894 ipr_unit_check_no_data(ioa_cfg);
4895 return;
4896 }
4897
4898 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
4899 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
4900 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
4901
4902 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
4903 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
4904 ipr_unit_check_no_data(ioa_cfg);
4905 return;
4906 }
4907
4908 /* Find length of the first sdt entry (UC buffer) */
4909 length = (be32_to_cpu(sdt.entry[0].end_offset) -
4910 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
4911
4912 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
4913 struct ipr_hostrcb, queue);
4914 list_del(&hostrcb->queue);
4915 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
4916
4917 rc = ipr_get_ldump_data_section(ioa_cfg,
4918 be32_to_cpu(sdt.entry[0].bar_str_offset),
4919 (__be32 *)&hostrcb->hcam,
4920 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
4921
4922 if (!rc)
4923 ipr_handle_log_data(ioa_cfg, hostrcb);
4924 else
4925 ipr_unit_check_no_data(ioa_cfg);
4926
4927 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
4928}
4929
4930/**
4931 * ipr_reset_restore_cfg_space - Restore PCI config space.
4932 * @ipr_cmd: ipr command struct
4933 *
4934 * Description: This function restores the saved PCI config space of
4935 * the adapter, fails all outstanding ops back to the callers, and
4936 * fetches the dump/unit check if applicable to this reset.
4937 *
4938 * Return value:
4939 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4940 **/
4941static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
4942{
4943 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4944 int rc;
4945
4946 ENTER;
b30197d2 4947 pci_unblock_user_cfg_access(ioa_cfg->pdev);
1da177e4
LT		 4948 rc = pci_restore_state(ioa_cfg->pdev);
4949
4950 if (rc != PCIBIOS_SUCCESSFUL) {
4951 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
4952 return IPR_RC_JOB_CONTINUE;
4953 }
4954
4955 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
4956 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
4957 return IPR_RC_JOB_CONTINUE;
4958 }
4959
4960 ipr_fail_all_ops(ioa_cfg);
4961
4962 if (ioa_cfg->ioa_unit_checked) {
4963 ioa_cfg->ioa_unit_checked = 0;
4964 ipr_get_unit_check_buffer(ioa_cfg);
4965 ipr_cmd->job_step = ipr_reset_alert;
4966 ipr_reset_start_timer(ipr_cmd, 0);
4967 return IPR_RC_JOB_RETURN;
4968 }
4969
4970 if (ioa_cfg->in_ioa_bringdown) {
4971 ipr_cmd->job_step = ipr_ioa_bringdown_done;
4972 } else {
4973 ipr_cmd->job_step = ipr_reset_enable_ioa;
4974
4975 if (GET_DUMP == ioa_cfg->sdt_state) {
4976 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
4977 ipr_cmd->job_step = ipr_reset_wait_for_dump;
4978 schedule_work(&ioa_cfg->work_q);
4979 return IPR_RC_JOB_RETURN;
4980 }
4981 }
4982
4983 ENTER;
4984 return IPR_RC_JOB_CONTINUE;
4985}
4986
4987/**
4988 * ipr_reset_start_bist - Run BIST on the adapter.
4989 * @ipr_cmd: ipr command struct
4990 *
4991 * Description: This function runs BIST on the adapter, then delays 2 seconds.
4992 *
4993 * Return value:
4994 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4995 **/
4996static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
4997{
4998 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4999 int rc;
5000
5001 ENTER;
b30197d2 5002 pci_block_user_cfg_access(ioa_cfg->pdev);
1da177e4
LT		 5003 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
5004
5005 if (rc != PCIBIOS_SUCCESSFUL) {
5006 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
5007 rc = IPR_RC_JOB_CONTINUE;
5008 } else {
5009 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
5010 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
5011 rc = IPR_RC_JOB_RETURN;
5012 }
5013
5014 LEAVE;
5015 return rc;
5016}
5017
5018/**
5019 * ipr_reset_allowed - Query whether or not IOA can be reset
5020 * @ioa_cfg: ioa config struct
5021 *
5022 * Return value:
5023 * 0 if reset not allowed / non-zero if reset is allowed
5024 **/
5025static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
5026{
5027 volatile u32 temp_reg;
5028
5029 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5030 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
5031}
5032
5033/**
5034 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
5035 * @ipr_cmd: ipr command struct
5036 *
5037 * Description: This function waits for adapter permission to run BIST,
5038 * then runs BIST. If the adapter does not give permission after a
5039 * reasonable time, we will reset the adapter anyway. The impact of
5040 * resetting the adapter without warning the adapter is the risk of
5041 * losing the persistent error log on the adapter. If the adapter is
5042 * reset while it is writing to the flash on the adapter, the flash
5043 * segment will have bad ECC and be zeroed.
5044 *
5045 * Return value:
5046 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5047 **/
5048static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
5049{
5050 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5051 int rc = IPR_RC_JOB_RETURN;
5052
5053 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
5054 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
5055 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5056 } else {
5057 ipr_cmd->job_step = ipr_reset_start_bist;
5058 rc = IPR_RC_JOB_CONTINUE;
5059 }
5060
5061 return rc;
5062}
5063
5064/**
5065 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
5066 * @ipr_cmd: ipr command struct
5067 *
5068 * Description: This function alerts the adapter that it will be reset.
5069 * If memory space is not currently enabled, proceed directly
5070 * to running BIST on the adapter. The timer must always be started
5071 * so we guarantee we do not run BIST from ipr_isr.
5072 *
5073 * Return value:
5074 * IPR_RC_JOB_RETURN
5075 **/
5076static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
5077{
5078 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5079 u16 cmd_reg;
5080 int rc;
5081
5082 ENTER;
5083 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
5084
5085 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
5086 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5087 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
5088 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
5089 } else {
5090 ipr_cmd->job_step = ipr_reset_start_bist;
5091 }
5092
5093 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
5094 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5095
5096 LEAVE;
5097 return IPR_RC_JOB_RETURN;
5098}
5099
5100/**
5101 * ipr_reset_ucode_download_done - Microcode download completion
5102 * @ipr_cmd: ipr command struct
5103 *
5104 * Description: This function unmaps the microcode download buffer.
5105 *
5106 * Return value:
5107 * IPR_RC_JOB_CONTINUE
5108 **/
5109static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
5110{
5111 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5112 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5113
5114 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
5115 sglist->num_sg, DMA_TO_DEVICE);
5116
5117 ipr_cmd->job_step = ipr_reset_alert;
5118 return IPR_RC_JOB_CONTINUE;
5119}
5120
5121/**
5122 * ipr_reset_ucode_download - Download microcode to the adapter
5123 * @ipr_cmd: ipr command struct
5124 *
5125 * Description: This function checks to see if it there is microcode
5126 * to download to the adapter. If there is, a download is performed.
5127 *
5128 * Return value:
5129 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5130 **/
5131static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
5132{
5133 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5134 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5135
5136 ENTER;
5137 ipr_cmd->job_step = ipr_reset_alert;
5138
5139 if (!sglist)
5140 return IPR_RC_JOB_CONTINUE;
5141
5142 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5143 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5144 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
5145 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
5146 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
5147 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
5148 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
5149
5150 if (ipr_map_ucode_buffer(ipr_cmd, sglist, sglist->buffer_len)) {
5151 dev_err(&ioa_cfg->pdev->dev,
5152 "Failed to map microcode download buffer\n");
5153 return IPR_RC_JOB_CONTINUE;
5154 }
5155
5156 ipr_cmd->job_step = ipr_reset_ucode_download_done;
5157
5158 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5159 IPR_WRITE_BUFFER_TIMEOUT);
5160
5161 LEAVE;
5162 return IPR_RC_JOB_RETURN;
5163}
5164
5165/**
5166 * ipr_reset_shutdown_ioa - Shutdown the adapter
5167 * @ipr_cmd: ipr command struct
5168 *
5169 * Description: This function issues an adapter shutdown of the
5170 * specified type to the specified adapter as part of the
5171 * adapter reset job.
5172 *
5173 * Return value:
5174 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5175 **/
5176static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
5177{
5178 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5179 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
5180 unsigned long timeout;
5181 int rc = IPR_RC_JOB_CONTINUE;
5182
5183 ENTER;
5184 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
5185 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5186 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5187 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5188 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
5189
5190 if (shutdown_type == IPR_SHUTDOWN_ABBREV)
5191 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
5192 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
5193 timeout = IPR_INTERNAL_TIMEOUT;
5194 else
5195 timeout = IPR_SHUTDOWN_TIMEOUT;
5196
5197 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
5198
5199 rc = IPR_RC_JOB_RETURN;
5200 ipr_cmd->job_step = ipr_reset_ucode_download;
5201 } else
5202 ipr_cmd->job_step = ipr_reset_alert;
5203
5204 LEAVE;
5205 return rc;
5206}
5207
5208/**
5209 * ipr_reset_ioa_job - Adapter reset job
5210 * @ipr_cmd: ipr command struct
5211 *
5212 * Description: This function is the job router for the adapter reset job.
5213 *
5214 * Return value:
5215 * none
5216 **/
5217static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
5218{
5219 u32 rc, ioasc;
5220 unsigned long scratch = ipr_cmd->u.scratch;
5221 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5222
5223 do {
5224 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5225
5226 if (ioa_cfg->reset_cmd != ipr_cmd) {
5227 /*
5228 * We are doing nested adapter resets and this is
5229 * not the current reset job.
5230 */
5231 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5232 return;
5233 }
5234
5235 if (IPR_IOASC_SENSE_KEY(ioasc)) {
5236 dev_err(&ioa_cfg->pdev->dev,
5237 "0x%02X failed with IOASC: 0x%08X\n",
5238 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5239
5240 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5241 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5242 return;
5243 }
5244
5245 ipr_reinit_ipr_cmnd(ipr_cmd);
5246 ipr_cmd->u.scratch = scratch;
5247 rc = ipr_cmd->job_step(ipr_cmd);
5248 } while(rc == IPR_RC_JOB_CONTINUE);
5249}
5250
5251/**
5252 * _ipr_initiate_ioa_reset - Initiate an adapter reset
5253 * @ioa_cfg: ioa config struct
5254 * @job_step: first job step of reset job
5255 * @shutdown_type: shutdown type
5256 *
5257 * Description: This function will initiate the reset of the given adapter
5258 * starting at the selected job step.
5259 * If the caller needs to wait on the completion of the reset,
5260 * the caller must sleep on the reset_wait_q.
5261 *
5262 * Return value:
5263 * none
5264 **/
5265static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5266 int (*job_step) (struct ipr_cmnd *),
5267 enum ipr_shutdown_type shutdown_type)
5268{
5269 struct ipr_cmnd *ipr_cmd;
5270
5271 ioa_cfg->in_reset_reload = 1;
5272 ioa_cfg->allow_cmds = 0;
5273 scsi_block_requests(ioa_cfg->host);
5274
5275 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5276 ioa_cfg->reset_cmd = ipr_cmd;
5277 ipr_cmd->job_step = job_step;
5278 ipr_cmd->u.shutdown_type = shutdown_type;
5279
5280 ipr_reset_ioa_job(ipr_cmd);
5281}
5282
5283/**
5284 * ipr_initiate_ioa_reset - Initiate an adapter reset
5285 * @ioa_cfg: ioa config struct
5286 * @shutdown_type: shutdown type
5287 *
5288 * Description: This function will initiate the reset of the given adapter.
5289 * If the caller needs to wait on the completion of the reset,
5290 * the caller must sleep on the reset_wait_q.
5291 *
5292 * Return value:
5293 * none
5294 **/
5295static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5296 enum ipr_shutdown_type shutdown_type)
5297{
5298 if (ioa_cfg->ioa_is_dead)
5299 return;
5300
5301 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
5302 ioa_cfg->sdt_state = ABORT_DUMP;
5303
5304 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
5305 dev_err(&ioa_cfg->pdev->dev,
5306 "IOA taken offline - error recovery failed\n");
5307
5308 ioa_cfg->reset_retries = 0;
5309 ioa_cfg->ioa_is_dead = 1;
5310
5311 if (ioa_cfg->in_ioa_bringdown) {
5312 ioa_cfg->reset_cmd = NULL;
5313 ioa_cfg->in_reset_reload = 0;
5314 ipr_fail_all_ops(ioa_cfg);
5315 wake_up_all(&ioa_cfg->reset_wait_q);
5316
5317 spin_unlock_irq(ioa_cfg->host->host_lock);
5318 scsi_unblock_requests(ioa_cfg->host);
5319 spin_lock_irq(ioa_cfg->host->host_lock);
5320 return;
5321 } else {
5322 ioa_cfg->in_ioa_bringdown = 1;
5323 shutdown_type = IPR_SHUTDOWN_NONE;
5324 }
5325 }
5326
5327 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
5328 shutdown_type);
5329}
5330
5331/**
5332 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
5333 * @ioa_cfg: ioa cfg struct
5334 *
5335 * Description: This is the second phase of adapter intialization
5336 * This function takes care of initilizing the adapter to the point
5337 * where it can accept new commands.
5338
5339 * Return value:
5340 * 0 on sucess / -EIO on failure
5341 **/
5342static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
5343{
5344 int rc = 0;
5345 unsigned long host_lock_flags = 0;
5346
5347 ENTER;
5348 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5349 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
5350 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, IPR_SHUTDOWN_NONE);
5351
5352 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5353 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5354 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5355
5356 if (ioa_cfg->ioa_is_dead) {
5357 rc = -EIO;
5358 } else if (ipr_invalid_adapter(ioa_cfg)) {
5359 if (!ipr_testmode)
5360 rc = -EIO;
5361
5362 dev_err(&ioa_cfg->pdev->dev,
5363 "Adapter not supported in this hardware configuration.\n");
5364 }
5365
5366 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5367
5368 LEAVE;
5369 return rc;
5370}
5371
5372/**
5373 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
5374 * @ioa_cfg: ioa config struct
5375 *
5376 * Return value:
5377 * none
5378 **/
5379static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
5380{
5381 int i;
5382
5383 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
5384 if (ioa_cfg->ipr_cmnd_list[i])
5385 pci_pool_free(ioa_cfg->ipr_cmd_pool,
5386 ioa_cfg->ipr_cmnd_list[i],
5387 ioa_cfg->ipr_cmnd_list_dma[i]);
5388
5389 ioa_cfg->ipr_cmnd_list[i] = NULL;
5390 }
5391
5392 if (ioa_cfg->ipr_cmd_pool)
5393 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
5394
5395 ioa_cfg->ipr_cmd_pool = NULL;
5396}
5397
5398/**
5399 * ipr_free_mem - Frees memory allocated for an adapter
5400 * @ioa_cfg: ioa cfg struct
5401 *
5402 * Return value:
5403 * nothing
5404 **/
5405static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
5406{
5407 int i;
5408
5409 kfree(ioa_cfg->res_entries);
5410 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
5411 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
5412 ipr_free_cmd_blks(ioa_cfg);
5413 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
5414 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
5415 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
5416 ioa_cfg->cfg_table,
5417 ioa_cfg->cfg_table_dma);
5418
5419 for (i = 0; i < IPR_NUM_HCAMS; i++) {
5420 pci_free_consistent(ioa_cfg->pdev,
5421 sizeof(struct ipr_hostrcb),
5422 ioa_cfg->hostrcb[i],
5423 ioa_cfg->hostrcb_dma[i]);
5424 }
5425
5426 ipr_free_dump(ioa_cfg);
5427 kfree(ioa_cfg->saved_mode_pages);
5428 kfree(ioa_cfg->trace);
5429}
5430
5431/**
5432 * ipr_free_all_resources - Free all allocated resources for an adapter.
5433 * @ipr_cmd: ipr command struct
5434 *
5435 * This function frees all allocated resources for the
5436 * specified adapter.
5437 *
5438 * Return value:
5439 * none
5440 **/
5441static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
5442{
5443 struct pci_dev *pdev = ioa_cfg->pdev;
5444
5445 ENTER;
5446 free_irq(pdev->irq, ioa_cfg);
5447 iounmap(ioa_cfg->hdw_dma_regs);
5448 pci_release_regions(pdev);
5449 ipr_free_mem(ioa_cfg);
5450 scsi_host_put(ioa_cfg->host);
5451 pci_disable_device(pdev);
5452 LEAVE;
5453}
5454
5455/**
5456 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
5457 * @ioa_cfg: ioa config struct
5458 *
5459 * Return value:
5460 * 0 on success / -ENOMEM on allocation failure
5461 **/
5462static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
5463{
5464 struct ipr_cmnd *ipr_cmd;
5465 struct ipr_ioarcb *ioarcb;
5466 dma_addr_t dma_addr;
5467 int i;
5468
5469 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
5470 sizeof(struct ipr_cmnd), 8, 0);
5471
5472 if (!ioa_cfg->ipr_cmd_pool)
5473 return -ENOMEM;
5474
5475 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
5476 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr);
5477
5478 if (!ipr_cmd) {
5479 ipr_free_cmd_blks(ioa_cfg);
5480 return -ENOMEM;
5481 }
5482
5483 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
5484 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
5485 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
5486
5487 ioarcb = &ipr_cmd->ioarcb;
5488 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
5489 ioarcb->host_response_handle = cpu_to_be32(i << 2);
5490 ioarcb->write_ioadl_addr =
5491 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
5492 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5493 ioarcb->ioasa_host_pci_addr =
5494 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
5495 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
5496 ipr_cmd->cmd_index = i;
5497 ipr_cmd->ioa_cfg = ioa_cfg;
5498 ipr_cmd->sense_buffer_dma = dma_addr +
5499 offsetof(struct ipr_cmnd, sense_buffer);
5500
5501 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5502 }
5503
5504 return 0;
5505}
5506
5507/**
5508 * ipr_alloc_mem - Allocate memory for an adapter
5509 * @ioa_cfg: ioa config struct
5510 *
5511 * Return value:
5512 * 0 on success / non-zero for error
5513 **/
5514static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
5515{
5516 struct pci_dev *pdev = ioa_cfg->pdev;
5517 int i, rc = -ENOMEM;
5518
5519 ENTER;
5520 ioa_cfg->res_entries = kmalloc(sizeof(struct ipr_resource_entry) *
5521 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
5522
5523 if (!ioa_cfg->res_entries)
5524 goto out;
5525
5526 memset(ioa_cfg->res_entries, 0,
5527 sizeof(struct ipr_resource_entry) * IPR_MAX_PHYSICAL_DEVS);
5528
5529 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
5530 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
5531
5532 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
5533 sizeof(struct ipr_misc_cbs),
5534 &ioa_cfg->vpd_cbs_dma);
5535
5536 if (!ioa_cfg->vpd_cbs)
5537 goto out_free_res_entries;
5538
5539 if (ipr_alloc_cmd_blks(ioa_cfg))
5540 goto out_free_vpd_cbs;
5541
5542 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
5543 sizeof(u32) * IPR_NUM_CMD_BLKS,
5544 &ioa_cfg->host_rrq_dma);
5545
5546 if (!ioa_cfg->host_rrq)
5547 goto out_ipr_free_cmd_blocks;
5548
5549 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
5550 sizeof(struct ipr_config_table),
5551 &ioa_cfg->cfg_table_dma);
5552
5553 if (!ioa_cfg->cfg_table)
5554 goto out_free_host_rrq;
5555
5556 for (i = 0; i < IPR_NUM_HCAMS; i++) {
5557 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
5558 sizeof(struct ipr_hostrcb),
5559 &ioa_cfg->hostrcb_dma[i]);
5560
5561 if (!ioa_cfg->hostrcb[i])
5562 goto out_free_hostrcb_dma;
5563
5564 ioa_cfg->hostrcb[i]->hostrcb_dma =
5565 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
5566 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
5567 }
5568
5569 ioa_cfg->trace = kmalloc(sizeof(struct ipr_trace_entry) *
5570 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
5571
5572 if (!ioa_cfg->trace)
5573 goto out_free_hostrcb_dma;
5574
5575 memset(ioa_cfg->trace, 0,
5576 sizeof(struct ipr_trace_entry) * IPR_NUM_TRACE_ENTRIES);
5577
5578 rc = 0;
5579out:
5580 LEAVE;
5581 return rc;
5582
5583out_free_hostrcb_dma:
5584 while (i-- > 0) {
5585 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
5586 ioa_cfg->hostrcb[i],
5587 ioa_cfg->hostrcb_dma[i]);
5588 }
5589 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
5590 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
5591out_free_host_rrq:
5592 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
5593 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
5594out_ipr_free_cmd_blocks:
5595 ipr_free_cmd_blks(ioa_cfg);
5596out_free_vpd_cbs:
5597 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
5598 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
5599out_free_res_entries:
5600 kfree(ioa_cfg->res_entries);
5601 goto out;
5602}
5603
5604/**
5605 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
5606 * @ioa_cfg: ioa config struct
5607 *
5608 * Return value:
5609 * none
5610 **/
5611static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
5612{
5613 int i;
5614
5615 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5616 ioa_cfg->bus_attr[i].bus = i;
5617 ioa_cfg->bus_attr[i].qas_enabled = 0;
5618 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
5619 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
5620 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
5621 else
5622 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
5623 }
5624}
5625
5626/**
5627 * ipr_init_ioa_cfg - Initialize IOA config struct
5628 * @ioa_cfg: ioa config struct
5629 * @host: scsi host struct
5630 * @pdev: PCI dev struct
5631 *
5632 * Return value:
5633 * none
5634 **/
5635static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
5636 struct Scsi_Host *host, struct pci_dev *pdev)
5637{
5638 const struct ipr_interrupt_offsets *p;
5639 struct ipr_interrupts *t;
5640 void __iomem *base;
5641
5642 ioa_cfg->host = host;
5643 ioa_cfg->pdev = pdev;
5644 ioa_cfg->log_level = ipr_log_level;
5645 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
5646 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
5647 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
5648 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
5649 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
5650 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
5651 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
5652 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
5653
5654 INIT_LIST_HEAD(&ioa_cfg->free_q);
5655 INIT_LIST_HEAD(&ioa_cfg->pending_q);
5656 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
5657 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
5658 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
5659 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
5660 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg);
5661 init_waitqueue_head(&ioa_cfg->reset_wait_q);
5662 ioa_cfg->sdt_state = INACTIVE;
5663
5664 ipr_initialize_bus_attr(ioa_cfg);
5665
5666 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
5667 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
5668 host->max_channel = IPR_MAX_BUS_TO_SCAN;
5669 host->unique_id = host->host_no;
5670 host->max_cmd_len = IPR_MAX_CDB_LEN;
5671 pci_set_drvdata(pdev, ioa_cfg);
5672
5673 p = &ioa_cfg->chip_cfg->regs;
5674 t = &ioa_cfg->regs;
5675 base = ioa_cfg->hdw_dma_regs;
5676
5677 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
5678 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
5679 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
5680 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
5681 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
5682 t->ioarrin_reg = base + p->ioarrin_reg;
5683 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
5684 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
5685 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
5686}
5687
5688/**
5689 * ipr_get_chip_cfg - Find adapter chip configuration
5690 * @dev_id: PCI device id struct
5691 *
5692 * Return value:
5693 * ptr to chip config on success / NULL on failure
5694 **/
5695static const struct ipr_chip_cfg_t * __devinit
5696ipr_get_chip_cfg(const struct pci_device_id *dev_id)
5697{
5698 int i;
5699
5700 if (dev_id->driver_data)
5701 return (const struct ipr_chip_cfg_t *)dev_id->driver_data;
5702
5703 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
5704 if (ipr_chip[i].vendor == dev_id->vendor &&
5705 ipr_chip[i].device == dev_id->device)
5706 return ipr_chip[i].cfg;
5707 return NULL;
5708}
5709
5710/**
5711 * ipr_probe_ioa - Allocates memory and does first stage of initialization
5712 * @pdev: PCI device struct
5713 * @dev_id: PCI device id struct
5714 *
5715 * Return value:
5716 * 0 on success / non-zero on failure
5717 **/
5718static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
5719 const struct pci_device_id *dev_id)
5720{
5721 struct ipr_ioa_cfg *ioa_cfg;
5722 struct Scsi_Host *host;
5723 unsigned long ipr_regs_pci;
5724 void __iomem *ipr_regs;
5725 u32 rc = PCIBIOS_SUCCESSFUL;
5726
5727 ENTER;
5728
5729 if ((rc = pci_enable_device(pdev))) {
5730 dev_err(&pdev->dev, "Cannot enable adapter\n");
5731 goto out;
5732 }
5733
5734 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
5735
5736 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
5737
5738 if (!host) {
5739 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
5740 rc = -ENOMEM;
5741 goto out_disable;
5742 }
5743
5744 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
5745 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
5746
5747 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
5748
5749 if (!ioa_cfg->chip_cfg) {
5750 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
5751 dev_id->vendor, dev_id->device);
5752 goto out_scsi_host_put;
5753 }
5754
5755 ipr_regs_pci = pci_resource_start(pdev, 0);
5756
5757 rc = pci_request_regions(pdev, IPR_NAME);
5758 if (rc < 0) {
5759 dev_err(&pdev->dev,
5760 "Couldn't register memory range of registers\n");
5761 goto out_scsi_host_put;
5762 }
5763
5764 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
5765
5766 if (!ipr_regs) {
5767 dev_err(&pdev->dev,
5768 "Couldn't map memory range of registers\n");
5769 rc = -ENOMEM;
5770 goto out_release_regions;
5771 }
5772
5773 ioa_cfg->hdw_dma_regs = ipr_regs;
5774 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
5775 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
5776
5777 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
5778
5779 pci_set_master(pdev);
5780
5781 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5782 if (rc < 0) {
5783 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
5784 goto cleanup_nomem;
5785 }
5786
5787 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
5788 ioa_cfg->chip_cfg->cache_line_size);
5789
5790 if (rc != PCIBIOS_SUCCESSFUL) {
5791 dev_err(&pdev->dev, "Write of cache line size failed\n");
5792 rc = -EIO;
5793 goto cleanup_nomem;
5794 }
5795
5796 /* Save away PCI config space for use following IOA reset */
5797 rc = pci_save_state(pdev);
5798
5799 if (rc != PCIBIOS_SUCCESSFUL) {
5800 dev_err(&pdev->dev, "Failed to save PCI config space\n");
5801 rc = -EIO;
5802 goto cleanup_nomem;
5803 }
5804
5805 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
5806 goto cleanup_nomem;
5807
5808 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
5809 goto cleanup_nomem;
5810
5811 rc = ipr_alloc_mem(ioa_cfg);
5812 if (rc < 0) {
5813 dev_err(&pdev->dev,
5814 "Couldn't allocate enough memory for device driver!\n");
5815 goto cleanup_nomem;
5816 }
5817
5818 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
5819 rc = request_irq(pdev->irq, ipr_isr, SA_SHIRQ, IPR_NAME, ioa_cfg);
5820
5821 if (rc) {
5822 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
5823 pdev->irq, rc);
5824 goto cleanup_nolog;
5825 }
5826
5827 spin_lock(&ipr_driver_lock);
5828 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
5829 spin_unlock(&ipr_driver_lock);
5830
5831 LEAVE;
5832out:
5833 return rc;
5834
5835cleanup_nolog:
5836 ipr_free_mem(ioa_cfg);
5837cleanup_nomem:
5838 iounmap(ipr_regs);
5839out_release_regions:
5840 pci_release_regions(pdev);
5841out_scsi_host_put:
5842 scsi_host_put(host);
5843out_disable:
5844 pci_disable_device(pdev);
5845 goto out;
5846}
5847
5848/**
5849 * ipr_scan_vsets - Scans for VSET devices
5850 * @ioa_cfg: ioa config struct
5851 *
5852 * Description: Since the VSET resources do not follow SAM in that we can have
5853 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
5854 *
5855 * Return value:
5856 * none
5857 **/
5858static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
5859{
5860 int target, lun;
5861
5862 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
5863 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
5864 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
5865}
5866
5867/**
5868 * ipr_initiate_ioa_bringdown - Bring down an adapter
5869 * @ioa_cfg: ioa config struct
5870 * @shutdown_type: shutdown type
5871 *
5872 * Description: This function will initiate bringing down the adapter.
5873 * This consists of issuing an IOA shutdown to the adapter
5874 * to flush the cache, and running BIST.
5875 * If the caller needs to wait on the completion of the reset,
5876 * the caller must sleep on the reset_wait_q.
5877 *
5878 * Return value:
5879 * none
5880 **/
5881static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
5882 enum ipr_shutdown_type shutdown_type)
5883{
5884 ENTER;
5885 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
5886 ioa_cfg->sdt_state = ABORT_DUMP;
5887 ioa_cfg->reset_retries = 0;
5888 ioa_cfg->in_ioa_bringdown = 1;
5889 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
5890 LEAVE;
5891}
5892
5893/**
5894 * __ipr_remove - Remove a single adapter
5895 * @pdev: pci device struct
5896 *
5897 * Adapter hot plug remove entry point.
5898 *
5899 * Return value:
5900 * none
5901 **/
5902static void __ipr_remove(struct pci_dev *pdev)
5903{
5904 unsigned long host_lock_flags = 0;
5905 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
5906 ENTER;
5907
5908 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5909 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
5910
5911 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5912 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5cbf5eae 5913 flush_scheduled_work();
1da177e4
LT		 5914 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5915
5916 spin_lock(&ipr_driver_lock);
5917 list_del(&ioa_cfg->queue);
5918 spin_unlock(&ipr_driver_lock);
5919
5920 if (ioa_cfg->sdt_state == ABORT_DUMP)
5921 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
5922 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5923
5924 ipr_free_all_resources(ioa_cfg);
5925
5926 LEAVE;
5927}
5928
5929/**
5930 * ipr_remove - IOA hot plug remove entry point
5931 * @pdev: pci device struct
5932 *
5933 * Adapter hot plug remove entry point.
5934 *
5935 * Return value:
5936 * none
5937 **/
5938static void ipr_remove(struct pci_dev *pdev)
5939{
5940 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
5941
5942 ENTER;
5943
1da177e4
LT		 5944 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
5945 &ipr_trace_attr);
5946 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
5947 &ipr_dump_attr);
5948 scsi_remove_host(ioa_cfg->host);
5949
5950 __ipr_remove(pdev);
5951
5952 LEAVE;
5953}
5954
5955/**
5956 * ipr_probe - Adapter hot plug add entry point
5957 *
5958 * Return value:
5959 * 0 on success / non-zero on failure
5960 **/
5961static int __devinit ipr_probe(struct pci_dev *pdev,
5962 const struct pci_device_id *dev_id)
5963{
5964 struct ipr_ioa_cfg *ioa_cfg;
5965 int rc;
5966
5967 rc = ipr_probe_ioa(pdev, dev_id);
5968
5969 if (rc)
5970 return rc;
5971
5972 ioa_cfg = pci_get_drvdata(pdev);
5973 rc = ipr_probe_ioa_part2(ioa_cfg);
5974
5975 if (rc) {
5976 __ipr_remove(pdev);
5977 return rc;
5978 }
5979
5980 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
5981
5982 if (rc) {
5983 __ipr_remove(pdev);
5984 return rc;
5985 }
5986
5987 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
5988 &ipr_trace_attr);
5989
5990 if (rc) {
5991 scsi_remove_host(ioa_cfg->host);
5992 __ipr_remove(pdev);
5993 return rc;
5994 }
5995
5996 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
5997 &ipr_dump_attr);
5998
5999 if (rc) {
6000 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
6001 &ipr_trace_attr);
6002 scsi_remove_host(ioa_cfg->host);
6003 __ipr_remove(pdev);
6004 return rc;
6005 }
6006
6007 scsi_scan_host(ioa_cfg->host);
6008 ipr_scan_vsets(ioa_cfg);
6009 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
6010 ioa_cfg->allow_ml_add_del = 1;
6011 schedule_work(&ioa_cfg->work_q);
6012 return 0;
6013}
6014
6015/**
6016 * ipr_shutdown - Shutdown handler.
d18c3db5 6017 * @pdev: pci device struct
1da177e4
LT		 6018 *
6019 * This function is invoked upon system shutdown/reboot. It will issue
6020 * an adapter shutdown to the adapter to flush the write cache.
6021 *
6022 * Return value:
6023 * none
6024 **/
d18c3db5 6025static void ipr_shutdown(struct pci_dev *pdev)
1da177e4 6026{
d18c3db5 6027 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
1da177e4
LT		 6028 unsigned long lock_flags = 0;
6029
6030 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6031 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
6032 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6033 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6034}
6035
6036static struct pci_device_id ipr_pci_table[] __devinitdata = {
6037 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6038 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702,
6039 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6040 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6041 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703,
6042 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6043 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6044 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D,
6045 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6046 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6047 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E,
6048 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6049 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6050 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B,
6051 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6052 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6053 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E,
6054 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6055 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6056 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A,
6057 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6058 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6059 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780,
6060 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
6061 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6062 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E,
6063 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
6064 { }
6065};
6066MODULE_DEVICE_TABLE(pci, ipr_pci_table);
6067
6068static struct pci_driver ipr_driver = {
6069 .name = IPR_NAME,
6070 .id_table = ipr_pci_table,
6071 .probe = ipr_probe,
6072 .remove = ipr_remove,
d18c3db5 6073 .shutdown = ipr_shutdown,
1da177e4
LT		 6074};
6075
6076/**
6077 * ipr_init - Module entry point
6078 *
6079 * Return value:
6080 * 0 on success / negative value on failure
6081 **/
6082static int __init ipr_init(void)
6083{
6084 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
6085 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
6086
6087 return pci_module_init(&ipr_driver);
6088}
6089
6090/**
6091 * ipr_exit - Module unload
6092 *
6093 * Module unload entry point.
6094 *
6095 * Return value:
6096 * none
6097 **/
6098static void __exit ipr_exit(void)
6099{
6100 pci_unregister_driver(&ipr_driver);
6101}
6102
6103module_init(ipr_init);
6104module_exit(ipr_exit);
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