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Linux 4.18.10
[linux/fpc-iii.git] / drivers / scsi / ipr.c
blob02d65dce74e504230ceb3080b58972d8d5dff950
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/fs.h>
58 #include <linux/init.h>
59 #include <linux/types.h>
60 #include <linux/errno.h>
61 #include <linux/kernel.h>
62 #include <linux/slab.h>
63 #include <linux/vmalloc.h>
64 #include <linux/ioport.h>
65 #include <linux/delay.h>
66 #include <linux/pci.h>
67 #include <linux/wait.h>
68 #include <linux/spinlock.h>
69 #include <linux/sched.h>
70 #include <linux/interrupt.h>
71 #include <linux/blkdev.h>
72 #include <linux/firmware.h>
73 #include <linux/module.h>
74 #include <linux/moduleparam.h>
75 #include <linux/libata.h>
76 #include <linux/hdreg.h>
77 #include <linux/reboot.h>
78 #include <linux/stringify.h>
79 #include <asm/io.h>
80 #include <asm/irq.h>
81 #include <asm/processor.h>
82 #include <scsi/scsi.h>
83 #include <scsi/scsi_host.h>
84 #include <scsi/scsi_tcq.h>
85 #include <scsi/scsi_eh.h>
86 #include <scsi/scsi_cmnd.h>
87 #include "ipr.h"
88
89 /*
90 * Global Data
91 */
92 static LIST_HEAD(ipr_ioa_head);
93 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
94 static unsigned int ipr_max_speed = 1;
95 static int ipr_testmode = 0;
96 static unsigned int ipr_fastfail = 0;
97 static unsigned int ipr_transop_timeout = 0;
98 static unsigned int ipr_debug = 0;
99 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
100 static unsigned int ipr_dual_ioa_raid = 1;
101 static unsigned int ipr_number_of_msix = 16;
102 static unsigned int ipr_fast_reboot;
103 static DEFINE_SPINLOCK(ipr_driver_lock);
104
105 /* This table describes the differences between DMA controller chips */
106 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
107 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
108 .mailbox = 0x0042C,
109 .max_cmds = 100,
110 .cache_line_size = 0x20,
111 .clear_isr = 1,
112 .iopoll_weight = 0,
113 {
114 .set_interrupt_mask_reg = 0x0022C,
115 .clr_interrupt_mask_reg = 0x00230,
116 .clr_interrupt_mask_reg32 = 0x00230,
117 .sense_interrupt_mask_reg = 0x0022C,
118 .sense_interrupt_mask_reg32 = 0x0022C,
119 .clr_interrupt_reg = 0x00228,
120 .clr_interrupt_reg32 = 0x00228,
121 .sense_interrupt_reg = 0x00224,
122 .sense_interrupt_reg32 = 0x00224,
123 .ioarrin_reg = 0x00404,
124 .sense_uproc_interrupt_reg = 0x00214,
125 .sense_uproc_interrupt_reg32 = 0x00214,
126 .set_uproc_interrupt_reg = 0x00214,
127 .set_uproc_interrupt_reg32 = 0x00214,
128 .clr_uproc_interrupt_reg = 0x00218,
129 .clr_uproc_interrupt_reg32 = 0x00218
130 }
131 },
132 { /* Snipe and Scamp */
133 .mailbox = 0x0052C,
134 .max_cmds = 100,
135 .cache_line_size = 0x20,
136 .clear_isr = 1,
137 .iopoll_weight = 0,
138 {
139 .set_interrupt_mask_reg = 0x00288,
140 .clr_interrupt_mask_reg = 0x0028C,
141 .clr_interrupt_mask_reg32 = 0x0028C,
142 .sense_interrupt_mask_reg = 0x00288,
143 .sense_interrupt_mask_reg32 = 0x00288,
144 .clr_interrupt_reg = 0x00284,
145 .clr_interrupt_reg32 = 0x00284,
146 .sense_interrupt_reg = 0x00280,
147 .sense_interrupt_reg32 = 0x00280,
148 .ioarrin_reg = 0x00504,
149 .sense_uproc_interrupt_reg = 0x00290,
150 .sense_uproc_interrupt_reg32 = 0x00290,
151 .set_uproc_interrupt_reg = 0x00290,
152 .set_uproc_interrupt_reg32 = 0x00290,
153 .clr_uproc_interrupt_reg = 0x00294,
154 .clr_uproc_interrupt_reg32 = 0x00294
155 }
156 },
157 { /* CRoC */
158 .mailbox = 0x00044,
159 .max_cmds = 1000,
160 .cache_line_size = 0x20,
161 .clear_isr = 0,
162 .iopoll_weight = 64,
163 {
164 .set_interrupt_mask_reg = 0x00010,
165 .clr_interrupt_mask_reg = 0x00018,
166 .clr_interrupt_mask_reg32 = 0x0001C,
167 .sense_interrupt_mask_reg = 0x00010,
168 .sense_interrupt_mask_reg32 = 0x00014,
169 .clr_interrupt_reg = 0x00008,
170 .clr_interrupt_reg32 = 0x0000C,
171 .sense_interrupt_reg = 0x00000,
172 .sense_interrupt_reg32 = 0x00004,
173 .ioarrin_reg = 0x00070,
174 .sense_uproc_interrupt_reg = 0x00020,
175 .sense_uproc_interrupt_reg32 = 0x00024,
176 .set_uproc_interrupt_reg = 0x00020,
177 .set_uproc_interrupt_reg32 = 0x00024,
178 .clr_uproc_interrupt_reg = 0x00028,
179 .clr_uproc_interrupt_reg32 = 0x0002C,
180 .init_feedback_reg = 0x0005C,
181 .dump_addr_reg = 0x00064,
182 .dump_data_reg = 0x00068,
183 .endian_swap_reg = 0x00084
184 }
185 },
186 };
187
188 static const struct ipr_chip_t ipr_chip[] = {
189 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
190 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
191 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
192 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
193 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, true, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
194 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
195 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
196 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
197 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
198 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
199 };
200
201 static int ipr_max_bus_speeds[] = {
202 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
203 };
204
205 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
206 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
207 module_param_named(max_speed, ipr_max_speed, uint, 0);
208 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
209 module_param_named(log_level, ipr_log_level, uint, 0);
210 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
211 module_param_named(testmode, ipr_testmode, int, 0);
212 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
213 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
214 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
215 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
216 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
217 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
218 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
219 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
220 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
221 module_param_named(max_devs, ipr_max_devs, int, 0);
222 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
223 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
224 module_param_named(number_of_msix, ipr_number_of_msix, int, 0);
225 MODULE_PARM_DESC(number_of_msix, "Specify the number of MSIX interrupts to use on capable adapters (1 - 16). (default:16)");
226 module_param_named(fast_reboot, ipr_fast_reboot, int, S_IRUGO | S_IWUSR);
227 MODULE_PARM_DESC(fast_reboot, "Skip adapter shutdown during reboot. Set to 1 to enable. (default: 0)");
228 MODULE_LICENSE("GPL");
229 MODULE_VERSION(IPR_DRIVER_VERSION);
230
231 /* A constant array of IOASCs/URCs/Error Messages */
232 static const
233 struct ipr_error_table_t ipr_error_table[] = {
234 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
235 "8155: An unknown error was received"},
236 {0x00330000, 0, 0,
237 "Soft underlength error"},
238 {0x005A0000, 0, 0,
239 "Command to be cancelled not found"},
240 {0x00808000, 0, 0,
241 "Qualified success"},
242 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
243 "FFFE: Soft device bus error recovered by the IOA"},
244 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
245 "4101: Soft device bus fabric error"},
246 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
247 "FFFC: Logical block guard error recovered by the device"},
248 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
249 "FFFC: Logical block reference tag error recovered by the device"},
250 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
251 "4171: Recovered scatter list tag / sequence number error"},
252 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
253 "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
254 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
255 "4171: Recovered logical block sequence number error on IOA to Host transfer"},
256 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
257 "FFFD: Recovered logical block reference tag error detected by the IOA"},
258 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
259 "FFFD: Logical block guard error recovered by the IOA"},
260 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
261 "FFF9: Device sector reassign successful"},
262 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
263 "FFF7: Media error recovered by device rewrite procedures"},
264 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
265 "7001: IOA sector reassignment successful"},
266 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
267 "FFF9: Soft media error. Sector reassignment recommended"},
268 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
269 "FFF7: Media error recovered by IOA rewrite procedures"},
270 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
271 "FF3D: Soft PCI bus error recovered by the IOA"},
272 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
273 "FFF6: Device hardware error recovered by the IOA"},
274 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
275 "FFF6: Device hardware error recovered by the device"},
276 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
277 "FF3D: Soft IOA error recovered by the IOA"},
278 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
279 "FFFA: Undefined device response recovered by the IOA"},
280 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
281 "FFF6: Device bus error, message or command phase"},
282 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
283 "FFFE: Task Management Function failed"},
284 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
285 "FFF6: Failure prediction threshold exceeded"},
286 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
287 "8009: Impending cache battery pack failure"},
288 {0x02040100, 0, 0,
289 "Logical Unit in process of becoming ready"},
290 {0x02040200, 0, 0,
291 "Initializing command required"},
292 {0x02040400, 0, 0,
293 "34FF: Disk device format in progress"},
294 {0x02040C00, 0, 0,
295 "Logical unit not accessible, target port in unavailable state"},
296 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
297 "9070: IOA requested reset"},
298 {0x023F0000, 0, 0,
299 "Synchronization required"},
300 {0x02408500, 0, 0,
301 "IOA microcode download required"},
302 {0x02408600, 0, 0,
303 "Device bus connection is prohibited by host"},
304 {0x024E0000, 0, 0,
305 "No ready, IOA shutdown"},
306 {0x025A0000, 0, 0,
307 "Not ready, IOA has been shutdown"},
308 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
309 "3020: Storage subsystem configuration error"},
310 {0x03110B00, 0, 0,
311 "FFF5: Medium error, data unreadable, recommend reassign"},
312 {0x03110C00, 0, 0,
313 "7000: Medium error, data unreadable, do not reassign"},
314 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
315 "FFF3: Disk media format bad"},
316 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
317 "3002: Addressed device failed to respond to selection"},
318 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
319 "3100: Device bus error"},
320 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
321 "3109: IOA timed out a device command"},
322 {0x04088000, 0, 0,
323 "3120: SCSI bus is not operational"},
324 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
325 "4100: Hard device bus fabric error"},
326 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
327 "310C: Logical block guard error detected by the device"},
328 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
329 "310C: Logical block reference tag error detected by the device"},
330 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
331 "4170: Scatter list tag / sequence number error"},
332 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
333 "8150: Logical block CRC error on IOA to Host transfer"},
334 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
335 "4170: Logical block sequence number error on IOA to Host transfer"},
336 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
337 "310D: Logical block reference tag error detected by the IOA"},
338 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
339 "310D: Logical block guard error detected by the IOA"},
340 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
341 "9000: IOA reserved area data check"},
342 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
343 "9001: IOA reserved area invalid data pattern"},
344 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
345 "9002: IOA reserved area LRC error"},
346 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
347 "Hardware Error, IOA metadata access error"},
348 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
349 "102E: Out of alternate sectors for disk storage"},
350 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
351 "FFF4: Data transfer underlength error"},
352 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
353 "FFF4: Data transfer overlength error"},
354 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
355 "3400: Logical unit failure"},
356 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
357 "FFF4: Device microcode is corrupt"},
358 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
359 "8150: PCI bus error"},
360 {0x04430000, 1, 0,
361 "Unsupported device bus message received"},
362 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
363 "FFF4: Disk device problem"},
364 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
365 "8150: Permanent IOA failure"},
366 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
367 "3010: Disk device returned wrong response to IOA"},
368 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
369 "8151: IOA microcode error"},
370 {0x04448500, 0, 0,
371 "Device bus status error"},
372 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
373 "8157: IOA error requiring IOA reset to recover"},
374 {0x04448700, 0, 0,
375 "ATA device status error"},
376 {0x04490000, 0, 0,
377 "Message reject received from the device"},
378 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
379 "8008: A permanent cache battery pack failure occurred"},
380 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
381 "9090: Disk unit has been modified after the last known status"},
382 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
383 "9081: IOA detected device error"},
384 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
385 "9082: IOA detected device error"},
386 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
387 "3110: Device bus error, message or command phase"},
388 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
389 "3110: SAS Command / Task Management Function failed"},
390 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
391 "9091: Incorrect hardware configuration change has been detected"},
392 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
393 "9073: Invalid multi-adapter configuration"},
394 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
395 "4010: Incorrect connection between cascaded expanders"},
396 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
397 "4020: Connections exceed IOA design limits"},
398 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
399 "4030: Incorrect multipath connection"},
400 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
401 "4110: Unsupported enclosure function"},
402 {0x04679800, 0, IPR_DEFAULT_LOG_LEVEL,
403 "4120: SAS cable VPD cannot be read"},
404 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
405 "FFF4: Command to logical unit failed"},
406 {0x05240000, 1, 0,
407 "Illegal request, invalid request type or request packet"},
408 {0x05250000, 0, 0,
409 "Illegal request, invalid resource handle"},
410 {0x05258000, 0, 0,
411 "Illegal request, commands not allowed to this device"},
412 {0x05258100, 0, 0,
413 "Illegal request, command not allowed to a secondary adapter"},
414 {0x05258200, 0, 0,
415 "Illegal request, command not allowed to a non-optimized resource"},
416 {0x05260000, 0, 0,
417 "Illegal request, invalid field in parameter list"},
418 {0x05260100, 0, 0,
419 "Illegal request, parameter not supported"},
420 {0x05260200, 0, 0,
421 "Illegal request, parameter value invalid"},
422 {0x052C0000, 0, 0,
423 "Illegal request, command sequence error"},
424 {0x052C8000, 1, 0,
425 "Illegal request, dual adapter support not enabled"},
426 {0x052C8100, 1, 0,
427 "Illegal request, another cable connector was physically disabled"},
428 {0x054E8000, 1, 0,
429 "Illegal request, inconsistent group id/group count"},
430 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
431 "9031: Array protection temporarily suspended, protection resuming"},
432 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
433 "9040: Array protection temporarily suspended, protection resuming"},
434 {0x060B0100, 0, IPR_DEFAULT_LOG_LEVEL,
435 "4080: IOA exceeded maximum operating temperature"},
436 {0x060B8000, 0, IPR_DEFAULT_LOG_LEVEL,
437 "4085: Service required"},
438 {0x060B8100, 0, IPR_DEFAULT_LOG_LEVEL,
439 "4086: SAS Adapter Hardware Configuration Error"},
440 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
441 "3140: Device bus not ready to ready transition"},
442 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
443 "FFFB: SCSI bus was reset"},
444 {0x06290500, 0, 0,
445 "FFFE: SCSI bus transition to single ended"},
446 {0x06290600, 0, 0,
447 "FFFE: SCSI bus transition to LVD"},
448 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
449 "FFFB: SCSI bus was reset by another initiator"},
450 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
451 "3029: A device replacement has occurred"},
452 {0x063F8300, 0, IPR_DEFAULT_LOG_LEVEL,
453 "4102: Device bus fabric performance degradation"},
454 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
455 "9051: IOA cache data exists for a missing or failed device"},
456 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
457 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
458 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
459 "9025: Disk unit is not supported at its physical location"},
460 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
461 "3020: IOA detected a SCSI bus configuration error"},
462 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
463 "3150: SCSI bus configuration error"},
464 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
465 "9074: Asymmetric advanced function disk configuration"},
466 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
467 "4040: Incomplete multipath connection between IOA and enclosure"},
468 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
469 "4041: Incomplete multipath connection between enclosure and device"},
470 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
471 "9075: Incomplete multipath connection between IOA and remote IOA"},
472 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
473 "9076: Configuration error, missing remote IOA"},
474 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
475 "4050: Enclosure does not support a required multipath function"},
476 {0x06679800, 0, IPR_DEFAULT_LOG_LEVEL,
477 "4121: Configuration error, required cable is missing"},
478 {0x06679900, 0, IPR_DEFAULT_LOG_LEVEL,
479 "4122: Cable is not plugged into the correct location on remote IOA"},
480 {0x06679A00, 0, IPR_DEFAULT_LOG_LEVEL,
481 "4123: Configuration error, invalid cable vital product data"},
482 {0x06679B00, 0, IPR_DEFAULT_LOG_LEVEL,
483 "4124: Configuration error, both cable ends are plugged into the same IOA"},
484 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
485 "4070: Logically bad block written on device"},
486 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
487 "9041: Array protection temporarily suspended"},
488 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
489 "9042: Corrupt array parity detected on specified device"},
490 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
491 "9030: Array no longer protected due to missing or failed disk unit"},
492 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
493 "9071: Link operational transition"},
494 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
495 "9072: Link not operational transition"},
496 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
497 "9032: Array exposed but still protected"},
498 {0x066B8300, 0, IPR_DEBUG_LOG_LEVEL,
499 "70DD: Device forced failed by disrupt device command"},
500 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
501 "4061: Multipath redundancy level got better"},
502 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
503 "4060: Multipath redundancy level got worse"},
504 {0x06808100, 0, IPR_DEBUG_LOG_LEVEL,
505 "9083: Device raw mode enabled"},
506 {0x06808200, 0, IPR_DEBUG_LOG_LEVEL,
507 "9084: Device raw mode disabled"},
508 {0x07270000, 0, 0,
509 "Failure due to other device"},
510 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
511 "9008: IOA does not support functions expected by devices"},
512 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
513 "9010: Cache data associated with attached devices cannot be found"},
514 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
515 "9011: Cache data belongs to devices other than those attached"},
516 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
517 "9020: Array missing 2 or more devices with only 1 device present"},
518 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
519 "9021: Array missing 2 or more devices with 2 or more devices present"},
520 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
521 "9022: Exposed array is missing a required device"},
522 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
523 "9023: Array member(s) not at required physical locations"},
524 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
525 "9024: Array not functional due to present hardware configuration"},
526 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
527 "9026: Array not functional due to present hardware configuration"},
528 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
529 "9027: Array is missing a device and parity is out of sync"},
530 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
531 "9028: Maximum number of arrays already exist"},
532 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
533 "9050: Required cache data cannot be located for a disk unit"},
534 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
535 "9052: Cache data exists for a device that has been modified"},
536 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
537 "9054: IOA resources not available due to previous problems"},
538 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
539 "9092: Disk unit requires initialization before use"},
540 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
541 "9029: Incorrect hardware configuration change has been detected"},
542 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
543 "9060: One or more disk pairs are missing from an array"},
544 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
545 "9061: One or more disks are missing from an array"},
546 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
547 "9062: One or more disks are missing from an array"},
548 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
549 "9063: Maximum number of functional arrays has been exceeded"},
550 {0x07279A00, 0, 0,
551 "Data protect, other volume set problem"},
552 {0x0B260000, 0, 0,
553 "Aborted command, invalid descriptor"},
554 {0x0B3F9000, 0, 0,
555 "Target operating conditions have changed, dual adapter takeover"},
556 {0x0B530200, 0, 0,
557 "Aborted command, medium removal prevented"},
558 {0x0B5A0000, 0, 0,
559 "Command terminated by host"},
560 {0x0B5B8000, 0, 0,
561 "Aborted command, command terminated by host"}
562 };
563
564 static const struct ipr_ses_table_entry ipr_ses_table[] = {
565 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
566 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
567 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
568 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
569 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
570 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
571 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
572 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
573 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
574 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
575 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
576 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
577 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
578 };
579
580 /*
581 * Function Prototypes
582 */
583 static int ipr_reset_alert(struct ipr_cmnd *);
584 static void ipr_process_ccn(struct ipr_cmnd *);
585 static void ipr_process_error(struct ipr_cmnd *);
586 static void ipr_reset_ioa_job(struct ipr_cmnd *);
587 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
588 enum ipr_shutdown_type);
589
590 #ifdef CONFIG_SCSI_IPR_TRACE
591 /**
592 * ipr_trc_hook - Add a trace entry to the driver trace
593 * @ipr_cmd: ipr command struct
594 * @type: trace type
595 * @add_data: additional data
596 *
597 * Return value:
598 * none
599 **/
600 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
601 u8 type, u32 add_data)
602 {
603 struct ipr_trace_entry *trace_entry;
604 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
605 unsigned int trace_index;
606
607 trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK;
608 trace_entry = &ioa_cfg->trace[trace_index];
609 trace_entry->time = jiffies;
610 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
611 trace_entry->type = type;
612 if (ipr_cmd->ioa_cfg->sis64)
613 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
614 else
615 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
616 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
617 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
618 trace_entry->u.add_data = add_data;
619 wmb();
620 }
621 #else
622 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0)
623 #endif
624
625 /**
626 * ipr_lock_and_done - Acquire lock and complete command
627 * @ipr_cmd: ipr command struct
628 *
629 * Return value:
630 * none
631 **/
632 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd)
633 {
634 unsigned long lock_flags;
635 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
636
637 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
638 ipr_cmd->done(ipr_cmd);
639 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
640 }
641
642 /**
643 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
644 * @ipr_cmd: ipr command struct
645 *
646 * Return value:
647 * none
648 **/
649 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
650 {
651 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
652 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
653 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
654 dma_addr_t dma_addr = ipr_cmd->dma_addr;
655 int hrrq_id;
656
657 hrrq_id = ioarcb->cmd_pkt.hrrq_id;
658 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
659 ioarcb->cmd_pkt.hrrq_id = hrrq_id;
660 ioarcb->data_transfer_length = 0;
661 ioarcb->read_data_transfer_length = 0;
662 ioarcb->ioadl_len = 0;
663 ioarcb->read_ioadl_len = 0;
664
665 if (ipr_cmd->ioa_cfg->sis64) {
666 ioarcb->u.sis64_addr_data.data_ioadl_addr =
667 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
668 ioasa64->u.gata.status = 0;
669 } else {
670 ioarcb->write_ioadl_addr =
671 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
672 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
673 ioasa->u.gata.status = 0;
674 }
675
676 ioasa->hdr.ioasc = 0;
677 ioasa->hdr.residual_data_len = 0;
678 ipr_cmd->scsi_cmd = NULL;
679 ipr_cmd->qc = NULL;
680 ipr_cmd->sense_buffer[0] = 0;
681 ipr_cmd->dma_use_sg = 0;
682 }
683
684 /**
685 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
686 * @ipr_cmd: ipr command struct
687 *
688 * Return value:
689 * none
690 **/
691 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd,
692 void (*fast_done) (struct ipr_cmnd *))
693 {
694 ipr_reinit_ipr_cmnd(ipr_cmd);
695 ipr_cmd->u.scratch = 0;
696 ipr_cmd->sibling = NULL;
697 ipr_cmd->eh_comp = NULL;
698 ipr_cmd->fast_done = fast_done;
699 timer_setup(&ipr_cmd->timer, NULL, 0);
700 }
701
702 /**
703 * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
704 * @ioa_cfg: ioa config struct
705 *
706 * Return value:
707 * pointer to ipr command struct
708 **/
709 static
710 struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue *hrrq)
711 {
712 struct ipr_cmnd *ipr_cmd = NULL;
713
714 if (likely(!list_empty(&hrrq->hrrq_free_q))) {
715 ipr_cmd = list_entry(hrrq->hrrq_free_q.next,
716 struct ipr_cmnd, queue);
717 list_del(&ipr_cmd->queue);
718 }
719
720
721 return ipr_cmd;
722 }
723
724 /**
725 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it
726 * @ioa_cfg: ioa config struct
727 *
728 * Return value:
729 * pointer to ipr command struct
730 **/
731 static
732 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
733 {
734 struct ipr_cmnd *ipr_cmd =
735 __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]);
736 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
737 return ipr_cmd;
738 }
739
740 /**
741 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
742 * @ioa_cfg: ioa config struct
743 * @clr_ints: interrupts to clear
744 *
745 * This function masks all interrupts on the adapter, then clears the
746 * interrupts specified in the mask
747 *
748 * Return value:
749 * none
750 **/
751 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
752 u32 clr_ints)
753 {
754 volatile u32 int_reg;
755 int i;
756
757 /* Stop new interrupts */
758 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
759 spin_lock(&ioa_cfg->hrrq[i]._lock);
760 ioa_cfg->hrrq[i].allow_interrupts = 0;
761 spin_unlock(&ioa_cfg->hrrq[i]._lock);
762 }
763
764 /* Set interrupt mask to stop all new interrupts */
765 if (ioa_cfg->sis64)
766 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
767 else
768 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
769
770 /* Clear any pending interrupts */
771 if (ioa_cfg->sis64)
772 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
773 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
774 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
775 }
776
777 /**
778 * ipr_save_pcix_cmd_reg - Save PCI-X command register
779 * @ioa_cfg: ioa config struct
780 *
781 * Return value:
782 * 0 on success / -EIO on failure
783 **/
784 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
785 {
786 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
787
788 if (pcix_cmd_reg == 0)
789 return 0;
790
791 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
792 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
793 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
794 return -EIO;
795 }
796
797 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
798 return 0;
799 }
800
801 /**
802 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
803 * @ioa_cfg: ioa config struct
804 *
805 * Return value:
806 * 0 on success / -EIO on failure
807 **/
808 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
809 {
810 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
811
812 if (pcix_cmd_reg) {
813 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
814 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
815 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
816 return -EIO;
817 }
818 }
819
820 return 0;
821 }
822
823 /**
824 * __ipr_sata_eh_done - done function for aborted SATA commands
825 * @ipr_cmd: ipr command struct
826 *
827 * This function is invoked for ops generated to SATA
828 * devices which are being aborted.
829 *
830 * Return value:
831 * none
832 **/
833 static void __ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
834 {
835 struct ata_queued_cmd *qc = ipr_cmd->qc;
836 struct ipr_sata_port *sata_port = qc->ap->private_data;
837
838 qc->err_mask |= AC_ERR_OTHER;
839 sata_port->ioasa.status |= ATA_BUSY;
840 ata_qc_complete(qc);
841 if (ipr_cmd->eh_comp)
842 complete(ipr_cmd->eh_comp);
843 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
844 }
845
846 /**
847 * ipr_sata_eh_done - done function for aborted SATA commands
848 * @ipr_cmd: ipr command struct
849 *
850 * This function is invoked for ops generated to SATA
851 * devices which are being aborted.
852 *
853 * Return value:
854 * none
855 **/
856 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
857 {
858 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
859 unsigned long hrrq_flags;
860
861 spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
862 __ipr_sata_eh_done(ipr_cmd);
863 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
864 }
865
866 /**
867 * __ipr_scsi_eh_done - mid-layer done function for aborted ops
868 * @ipr_cmd: ipr command struct
869 *
870 * This function is invoked by the interrupt handler for
871 * ops generated by the SCSI mid-layer which are being aborted.
872 *
873 * Return value:
874 * none
875 **/
876 static void __ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
877 {
878 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
879
880 scsi_cmd->result |= (DID_ERROR << 16);
881
882 scsi_dma_unmap(ipr_cmd->scsi_cmd);
883 scsi_cmd->scsi_done(scsi_cmd);
884 if (ipr_cmd->eh_comp)
885 complete(ipr_cmd->eh_comp);
886 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
887 }
888
889 /**
890 * ipr_scsi_eh_done - mid-layer done function for aborted ops
891 * @ipr_cmd: ipr command struct
892 *
893 * This function is invoked by the interrupt handler for
894 * ops generated by the SCSI mid-layer which are being aborted.
895 *
896 * Return value:
897 * none
898 **/
899 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
900 {
901 unsigned long hrrq_flags;
902 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
903
904 spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
905 __ipr_scsi_eh_done(ipr_cmd);
906 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
907 }
908
909 /**
910 * ipr_fail_all_ops - Fails all outstanding ops.
911 * @ioa_cfg: ioa config struct
912 *
913 * This function fails all outstanding ops.
914 *
915 * Return value:
916 * none
917 **/
918 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
919 {
920 struct ipr_cmnd *ipr_cmd, *temp;
921 struct ipr_hrr_queue *hrrq;
922
923 ENTER;
924 for_each_hrrq(hrrq, ioa_cfg) {
925 spin_lock(&hrrq->_lock);
926 list_for_each_entry_safe(ipr_cmd,
927 temp, &hrrq->hrrq_pending_q, queue) {
928 list_del(&ipr_cmd->queue);
929
930 ipr_cmd->s.ioasa.hdr.ioasc =
931 cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
932 ipr_cmd->s.ioasa.hdr.ilid =
933 cpu_to_be32(IPR_DRIVER_ILID);
934
935 if (ipr_cmd->scsi_cmd)
936 ipr_cmd->done = __ipr_scsi_eh_done;
937 else if (ipr_cmd->qc)
938 ipr_cmd->done = __ipr_sata_eh_done;
939
940 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH,
941 IPR_IOASC_IOA_WAS_RESET);
942 del_timer(&ipr_cmd->timer);
943 ipr_cmd->done(ipr_cmd);
944 }
945 spin_unlock(&hrrq->_lock);
946 }
947 LEAVE;
948 }
949
950 /**
951 * ipr_send_command - Send driver initiated requests.
952 * @ipr_cmd: ipr command struct
953 *
954 * This function sends a command to the adapter using the correct write call.
955 * In the case of sis64, calculate the ioarcb size required. Then or in the
956 * appropriate bits.
957 *
958 * Return value:
959 * none
960 **/
961 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
962 {
963 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
964 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
965
966 if (ioa_cfg->sis64) {
967 /* The default size is 256 bytes */
968 send_dma_addr |= 0x1;
969
970 /* If the number of ioadls * size of ioadl > 128 bytes,
971 then use a 512 byte ioarcb */
972 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
973 send_dma_addr |= 0x4;
974 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
975 } else
976 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
977 }
978
979 /**
980 * ipr_do_req - Send driver initiated requests.
981 * @ipr_cmd: ipr command struct
982 * @done: done function
983 * @timeout_func: timeout function
984 * @timeout: timeout value
985 *
986 * This function sends the specified command to the adapter with the
987 * timeout given. The done function is invoked on command completion.
988 *
989 * Return value:
990 * none
991 **/
992 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
993 void (*done) (struct ipr_cmnd *),
994 void (*timeout_func) (struct timer_list *), u32 timeout)
995 {
996 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
997
998 ipr_cmd->done = done;
999
1000 ipr_cmd->timer.expires = jiffies + timeout;
1001 ipr_cmd->timer.function = timeout_func;
1002
1003 add_timer(&ipr_cmd->timer);
1004
1005 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
1006
1007 ipr_send_command(ipr_cmd);
1008 }
1009
1010 /**
1011 * ipr_internal_cmd_done - Op done function for an internally generated op.
1012 * @ipr_cmd: ipr command struct
1013 *
1014 * This function is the op done function for an internally generated,
1015 * blocking op. It simply wakes the sleeping thread.
1016 *
1017 * Return value:
1018 * none
1019 **/
1020 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
1021 {
1022 if (ipr_cmd->sibling)
1023 ipr_cmd->sibling = NULL;
1024 else
1025 complete(&ipr_cmd->completion);
1026 }
1027
1028 /**
1029 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
1030 * @ipr_cmd: ipr command struct
1031 * @dma_addr: dma address
1032 * @len: transfer length
1033 * @flags: ioadl flag value
1034 *
1035 * This function initializes an ioadl in the case where there is only a single
1036 * descriptor.
1037 *
1038 * Return value:
1039 * nothing
1040 **/
1041 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
1042 u32 len, int flags)
1043 {
1044 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
1045 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
1046
1047 ipr_cmd->dma_use_sg = 1;
1048
1049 if (ipr_cmd->ioa_cfg->sis64) {
1050 ioadl64->flags = cpu_to_be32(flags);
1051 ioadl64->data_len = cpu_to_be32(len);
1052 ioadl64->address = cpu_to_be64(dma_addr);
1053
1054 ipr_cmd->ioarcb.ioadl_len =
1055 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
1056 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1057 } else {
1058 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
1059 ioadl->address = cpu_to_be32(dma_addr);
1060
1061 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
1062 ipr_cmd->ioarcb.read_ioadl_len =
1063 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1064 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
1065 } else {
1066 ipr_cmd->ioarcb.ioadl_len =
1067 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1068 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1069 }
1070 }
1071 }
1072
1073 /**
1074 * ipr_send_blocking_cmd - Send command and sleep on its completion.
1075 * @ipr_cmd: ipr command struct
1076 * @timeout_func: function to invoke if command times out
1077 * @timeout: timeout
1078 *
1079 * Return value:
1080 * none
1081 **/
1082 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
1083 void (*timeout_func) (struct timer_list *),
1084 u32 timeout)
1085 {
1086 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1087
1088 init_completion(&ipr_cmd->completion);
1089 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
1090
1091 spin_unlock_irq(ioa_cfg->host->host_lock);
1092 wait_for_completion(&ipr_cmd->completion);
1093 spin_lock_irq(ioa_cfg->host->host_lock);
1094 }
1095
1096 static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg)
1097 {
1098 unsigned int hrrq;
1099
1100 if (ioa_cfg->hrrq_num == 1)
1101 hrrq = 0;
1102 else {
1103 hrrq = atomic_add_return(1, &ioa_cfg->hrrq_index);
1104 hrrq = (hrrq % (ioa_cfg->hrrq_num - 1)) + 1;
1105 }
1106 return hrrq;
1107 }
1108
1109 /**
1110 * ipr_send_hcam - Send an HCAM to the adapter.
1111 * @ioa_cfg: ioa config struct
1112 * @type: HCAM type
1113 * @hostrcb: hostrcb struct
1114 *
1115 * This function will send a Host Controlled Async command to the adapter.
1116 * If HCAMs are currently not allowed to be issued to the adapter, it will
1117 * place the hostrcb on the free queue.
1118 *
1119 * Return value:
1120 * none
1121 **/
1122 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
1123 struct ipr_hostrcb *hostrcb)
1124 {
1125 struct ipr_cmnd *ipr_cmd;
1126 struct ipr_ioarcb *ioarcb;
1127
1128 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
1129 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
1130 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
1131 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
1132
1133 ipr_cmd->u.hostrcb = hostrcb;
1134 ioarcb = &ipr_cmd->ioarcb;
1135
1136 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
1137 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
1138 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
1139 ioarcb->cmd_pkt.cdb[1] = type;
1140 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
1141 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
1142
1143 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
1144 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
1145
1146 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
1147 ipr_cmd->done = ipr_process_ccn;
1148 else
1149 ipr_cmd->done = ipr_process_error;
1150
1151 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
1152
1153 ipr_send_command(ipr_cmd);
1154 } else {
1155 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
1156 }
1157 }
1158
1159 /**
1160 * ipr_update_ata_class - Update the ata class in the resource entry
1161 * @res: resource entry struct
1162 * @proto: cfgte device bus protocol value
1163 *
1164 * Return value:
1165 * none
1166 **/
1167 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1168 {
1169 switch (proto) {
1170 case IPR_PROTO_SATA:
1171 case IPR_PROTO_SAS_STP:
1172 res->ata_class = ATA_DEV_ATA;
1173 break;
1174 case IPR_PROTO_SATA_ATAPI:
1175 case IPR_PROTO_SAS_STP_ATAPI:
1176 res->ata_class = ATA_DEV_ATAPI;
1177 break;
1178 default:
1179 res->ata_class = ATA_DEV_UNKNOWN;
1180 break;
1181 };
1182 }
1183
1184 /**
1185 * ipr_init_res_entry - Initialize a resource entry struct.
1186 * @res: resource entry struct
1187 * @cfgtew: config table entry wrapper struct
1188 *
1189 * Return value:
1190 * none
1191 **/
1192 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1193 struct ipr_config_table_entry_wrapper *cfgtew)
1194 {
1195 int found = 0;
1196 unsigned int proto;
1197 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1198 struct ipr_resource_entry *gscsi_res = NULL;
1199
1200 res->needs_sync_complete = 0;
1201 res->in_erp = 0;
1202 res->add_to_ml = 0;
1203 res->del_from_ml = 0;
1204 res->resetting_device = 0;
1205 res->reset_occurred = 0;
1206 res->sdev = NULL;
1207 res->sata_port = NULL;
1208
1209 if (ioa_cfg->sis64) {
1210 proto = cfgtew->u.cfgte64->proto;
1211 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1212 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1213 res->qmodel = IPR_QUEUEING_MODEL64(res);
1214 res->type = cfgtew->u.cfgte64->res_type;
1215
1216 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1217 sizeof(res->res_path));
1218
1219 res->bus = 0;
1220 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1221 sizeof(res->dev_lun.scsi_lun));
1222 res->lun = scsilun_to_int(&res->dev_lun);
1223
1224 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1225 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1226 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1227 found = 1;
1228 res->target = gscsi_res->target;
1229 break;
1230 }
1231 }
1232 if (!found) {
1233 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1234 ioa_cfg->max_devs_supported);
1235 set_bit(res->target, ioa_cfg->target_ids);
1236 }
1237 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1238 res->bus = IPR_IOAFP_VIRTUAL_BUS;
1239 res->target = 0;
1240 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1241 res->bus = IPR_ARRAY_VIRTUAL_BUS;
1242 res->target = find_first_zero_bit(ioa_cfg->array_ids,
1243 ioa_cfg->max_devs_supported);
1244 set_bit(res->target, ioa_cfg->array_ids);
1245 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1246 res->bus = IPR_VSET_VIRTUAL_BUS;
1247 res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1248 ioa_cfg->max_devs_supported);
1249 set_bit(res->target, ioa_cfg->vset_ids);
1250 } else {
1251 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1252 ioa_cfg->max_devs_supported);
1253 set_bit(res->target, ioa_cfg->target_ids);
1254 }
1255 } else {
1256 proto = cfgtew->u.cfgte->proto;
1257 res->qmodel = IPR_QUEUEING_MODEL(res);
1258 res->flags = cfgtew->u.cfgte->flags;
1259 if (res->flags & IPR_IS_IOA_RESOURCE)
1260 res->type = IPR_RES_TYPE_IOAFP;
1261 else
1262 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1263
1264 res->bus = cfgtew->u.cfgte->res_addr.bus;
1265 res->target = cfgtew->u.cfgte->res_addr.target;
1266 res->lun = cfgtew->u.cfgte->res_addr.lun;
1267 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1268 }
1269
1270 ipr_update_ata_class(res, proto);
1271 }
1272
1273 /**
1274 * ipr_is_same_device - Determine if two devices are the same.
1275 * @res: resource entry struct
1276 * @cfgtew: config table entry wrapper struct
1277 *
1278 * Return value:
1279 * 1 if the devices are the same / 0 otherwise
1280 **/
1281 static int ipr_is_same_device(struct ipr_resource_entry *res,
1282 struct ipr_config_table_entry_wrapper *cfgtew)
1283 {
1284 if (res->ioa_cfg->sis64) {
1285 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1286 sizeof(cfgtew->u.cfgte64->dev_id)) &&
1287 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1288 sizeof(cfgtew->u.cfgte64->lun))) {
1289 return 1;
1290 }
1291 } else {
1292 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1293 res->target == cfgtew->u.cfgte->res_addr.target &&
1294 res->lun == cfgtew->u.cfgte->res_addr.lun)
1295 return 1;
1296 }
1297
1298 return 0;
1299 }
1300
1301 /**
1302 * __ipr_format_res_path - Format the resource path for printing.
1303 * @res_path: resource path
1304 * @buf: buffer
1305 * @len: length of buffer provided
1306 *
1307 * Return value:
1308 * pointer to buffer
1309 **/
1310 static char *__ipr_format_res_path(u8 *res_path, char *buffer, int len)
1311 {
1312 int i;
1313 char *p = buffer;
1314
1315 *p = '\0';
1316 p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1317 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1318 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1319
1320 return buffer;
1321 }
1322
1323 /**
1324 * ipr_format_res_path - Format the resource path for printing.
1325 * @ioa_cfg: ioa config struct
1326 * @res_path: resource path
1327 * @buf: buffer
1328 * @len: length of buffer provided
1329 *
1330 * Return value:
1331 * pointer to buffer
1332 **/
1333 static char *ipr_format_res_path(struct ipr_ioa_cfg *ioa_cfg,
1334 u8 *res_path, char *buffer, int len)
1335 {
1336 char *p = buffer;
1337
1338 *p = '\0';
1339 p += snprintf(p, buffer + len - p, "%d/", ioa_cfg->host->host_no);
1340 __ipr_format_res_path(res_path, p, len - (buffer - p));
1341 return buffer;
1342 }
1343
1344 /**
1345 * ipr_update_res_entry - Update the resource entry.
1346 * @res: resource entry struct
1347 * @cfgtew: config table entry wrapper struct
1348 *
1349 * Return value:
1350 * none
1351 **/
1352 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1353 struct ipr_config_table_entry_wrapper *cfgtew)
1354 {
1355 char buffer[IPR_MAX_RES_PATH_LENGTH];
1356 unsigned int proto;
1357 int new_path = 0;
1358
1359 if (res->ioa_cfg->sis64) {
1360 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1361 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1362 res->type = cfgtew->u.cfgte64->res_type;
1363
1364 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1365 sizeof(struct ipr_std_inq_data));
1366
1367 res->qmodel = IPR_QUEUEING_MODEL64(res);
1368 proto = cfgtew->u.cfgte64->proto;
1369 res->res_handle = cfgtew->u.cfgte64->res_handle;
1370 res->dev_id = cfgtew->u.cfgte64->dev_id;
1371
1372 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1373 sizeof(res->dev_lun.scsi_lun));
1374
1375 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1376 sizeof(res->res_path))) {
1377 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1378 sizeof(res->res_path));
1379 new_path = 1;
1380 }
1381
1382 if (res->sdev && new_path)
1383 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1384 ipr_format_res_path(res->ioa_cfg,
1385 res->res_path, buffer, sizeof(buffer)));
1386 } else {
1387 res->flags = cfgtew->u.cfgte->flags;
1388 if (res->flags & IPR_IS_IOA_RESOURCE)
1389 res->type = IPR_RES_TYPE_IOAFP;
1390 else
1391 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1392
1393 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1394 sizeof(struct ipr_std_inq_data));
1395
1396 res->qmodel = IPR_QUEUEING_MODEL(res);
1397 proto = cfgtew->u.cfgte->proto;
1398 res->res_handle = cfgtew->u.cfgte->res_handle;
1399 }
1400
1401 ipr_update_ata_class(res, proto);
1402 }
1403
1404 /**
1405 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1406 * for the resource.
1407 * @res: resource entry struct
1408 * @cfgtew: config table entry wrapper struct
1409 *
1410 * Return value:
1411 * none
1412 **/
1413 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1414 {
1415 struct ipr_resource_entry *gscsi_res = NULL;
1416 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1417
1418 if (!ioa_cfg->sis64)
1419 return;
1420
1421 if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1422 clear_bit(res->target, ioa_cfg->array_ids);
1423 else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1424 clear_bit(res->target, ioa_cfg->vset_ids);
1425 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1426 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1427 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1428 return;
1429 clear_bit(res->target, ioa_cfg->target_ids);
1430
1431 } else if (res->bus == 0)
1432 clear_bit(res->target, ioa_cfg->target_ids);
1433 }
1434
1435 /**
1436 * ipr_handle_config_change - Handle a config change from the adapter
1437 * @ioa_cfg: ioa config struct
1438 * @hostrcb: hostrcb
1439 *
1440 * Return value:
1441 * none
1442 **/
1443 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1444 struct ipr_hostrcb *hostrcb)
1445 {
1446 struct ipr_resource_entry *res = NULL;
1447 struct ipr_config_table_entry_wrapper cfgtew;
1448 __be32 cc_res_handle;
1449
1450 u32 is_ndn = 1;
1451
1452 if (ioa_cfg->sis64) {
1453 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1454 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1455 } else {
1456 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1457 cc_res_handle = cfgtew.u.cfgte->res_handle;
1458 }
1459
1460 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1461 if (res->res_handle == cc_res_handle) {
1462 is_ndn = 0;
1463 break;
1464 }
1465 }
1466
1467 if (is_ndn) {
1468 if (list_empty(&ioa_cfg->free_res_q)) {
1469 ipr_send_hcam(ioa_cfg,
1470 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1471 hostrcb);
1472 return;
1473 }
1474
1475 res = list_entry(ioa_cfg->free_res_q.next,
1476 struct ipr_resource_entry, queue);
1477
1478 list_del(&res->queue);
1479 ipr_init_res_entry(res, &cfgtew);
1480 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1481 }
1482
1483 ipr_update_res_entry(res, &cfgtew);
1484
1485 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1486 if (res->sdev) {
1487 res->del_from_ml = 1;
1488 res->res_handle = IPR_INVALID_RES_HANDLE;
1489 schedule_work(&ioa_cfg->work_q);
1490 } else {
1491 ipr_clear_res_target(res);
1492 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1493 }
1494 } else if (!res->sdev || res->del_from_ml) {
1495 res->add_to_ml = 1;
1496 schedule_work(&ioa_cfg->work_q);
1497 }
1498
1499 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1500 }
1501
1502 /**
1503 * ipr_process_ccn - Op done function for a CCN.
1504 * @ipr_cmd: ipr command struct
1505 *
1506 * This function is the op done function for a configuration
1507 * change notification host controlled async from the adapter.
1508 *
1509 * Return value:
1510 * none
1511 **/
1512 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1513 {
1514 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1515 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1516 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1517
1518 list_del_init(&hostrcb->queue);
1519 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
1520
1521 if (ioasc) {
1522 if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
1523 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST)
1524 dev_err(&ioa_cfg->pdev->dev,
1525 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1526
1527 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1528 } else {
1529 ipr_handle_config_change(ioa_cfg, hostrcb);
1530 }
1531 }
1532
1533 /**
1534 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1535 * @i: index into buffer
1536 * @buf: string to modify
1537 *
1538 * This function will strip all trailing whitespace, pad the end
1539 * of the string with a single space, and NULL terminate the string.
1540 *
1541 * Return value:
1542 * new length of string
1543 **/
1544 static int strip_and_pad_whitespace(int i, char *buf)
1545 {
1546 while (i && buf[i] == ' ')
1547 i--;
1548 buf[i+1] = ' ';
1549 buf[i+2] = '\0';
1550 return i + 2;
1551 }
1552
1553 /**
1554 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1555 * @prefix: string to print at start of printk
1556 * @hostrcb: hostrcb pointer
1557 * @vpd: vendor/product id/sn struct
1558 *
1559 * Return value:
1560 * none
1561 **/
1562 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1563 struct ipr_vpd *vpd)
1564 {
1565 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1566 int i = 0;
1567
1568 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1569 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1570
1571 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1572 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1573
1574 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1575 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1576
1577 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1578 }
1579
1580 /**
1581 * ipr_log_vpd - Log the passed VPD to the error log.
1582 * @vpd: vendor/product id/sn struct
1583 *
1584 * Return value:
1585 * none
1586 **/
1587 static void ipr_log_vpd(struct ipr_vpd *vpd)
1588 {
1589 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1590 + IPR_SERIAL_NUM_LEN];
1591
1592 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1593 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1594 IPR_PROD_ID_LEN);
1595 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1596 ipr_err("Vendor/Product ID: %s\n", buffer);
1597
1598 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1599 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1600 ipr_err(" Serial Number: %s\n", buffer);
1601 }
1602
1603 /**
1604 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1605 * @prefix: string to print at start of printk
1606 * @hostrcb: hostrcb pointer
1607 * @vpd: vendor/product id/sn/wwn struct
1608 *
1609 * Return value:
1610 * none
1611 **/
1612 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1613 struct ipr_ext_vpd *vpd)
1614 {
1615 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1616 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1617 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1618 }
1619
1620 /**
1621 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1622 * @vpd: vendor/product id/sn/wwn struct
1623 *
1624 * Return value:
1625 * none
1626 **/
1627 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1628 {
1629 ipr_log_vpd(&vpd->vpd);
1630 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1631 be32_to_cpu(vpd->wwid[1]));
1632 }
1633
1634 /**
1635 * ipr_log_enhanced_cache_error - Log a cache error.
1636 * @ioa_cfg: ioa config struct
1637 * @hostrcb: hostrcb struct
1638 *
1639 * Return value:
1640 * none
1641 **/
1642 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1643 struct ipr_hostrcb *hostrcb)
1644 {
1645 struct ipr_hostrcb_type_12_error *error;
1646
1647 if (ioa_cfg->sis64)
1648 error = &hostrcb->hcam.u.error64.u.type_12_error;
1649 else
1650 error = &hostrcb->hcam.u.error.u.type_12_error;
1651
1652 ipr_err("-----Current Configuration-----\n");
1653 ipr_err("Cache Directory Card Information:\n");
1654 ipr_log_ext_vpd(&error->ioa_vpd);
1655 ipr_err("Adapter Card Information:\n");
1656 ipr_log_ext_vpd(&error->cfc_vpd);
1657
1658 ipr_err("-----Expected Configuration-----\n");
1659 ipr_err("Cache Directory Card Information:\n");
1660 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1661 ipr_err("Adapter Card Information:\n");
1662 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1663
1664 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1665 be32_to_cpu(error->ioa_data[0]),
1666 be32_to_cpu(error->ioa_data[1]),
1667 be32_to_cpu(error->ioa_data[2]));
1668 }
1669
1670 /**
1671 * ipr_log_cache_error - Log a cache error.
1672 * @ioa_cfg: ioa config struct
1673 * @hostrcb: hostrcb struct
1674 *
1675 * Return value:
1676 * none
1677 **/
1678 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1679 struct ipr_hostrcb *hostrcb)
1680 {
1681 struct ipr_hostrcb_type_02_error *error =
1682 &hostrcb->hcam.u.error.u.type_02_error;
1683
1684 ipr_err("-----Current Configuration-----\n");
1685 ipr_err("Cache Directory Card Information:\n");
1686 ipr_log_vpd(&error->ioa_vpd);
1687 ipr_err("Adapter Card Information:\n");
1688 ipr_log_vpd(&error->cfc_vpd);
1689
1690 ipr_err("-----Expected Configuration-----\n");
1691 ipr_err("Cache Directory Card Information:\n");
1692 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1693 ipr_err("Adapter Card Information:\n");
1694 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1695
1696 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1697 be32_to_cpu(error->ioa_data[0]),
1698 be32_to_cpu(error->ioa_data[1]),
1699 be32_to_cpu(error->ioa_data[2]));
1700 }
1701
1702 /**
1703 * ipr_log_enhanced_config_error - Log a configuration error.
1704 * @ioa_cfg: ioa config struct
1705 * @hostrcb: hostrcb struct
1706 *
1707 * Return value:
1708 * none
1709 **/
1710 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1711 struct ipr_hostrcb *hostrcb)
1712 {
1713 int errors_logged, i;
1714 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1715 struct ipr_hostrcb_type_13_error *error;
1716
1717 error = &hostrcb->hcam.u.error.u.type_13_error;
1718 errors_logged = be32_to_cpu(error->errors_logged);
1719
1720 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1721 be32_to_cpu(error->errors_detected), errors_logged);
1722
1723 dev_entry = error->dev;
1724
1725 for (i = 0; i < errors_logged; i++, dev_entry++) {
1726 ipr_err_separator;
1727
1728 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1729 ipr_log_ext_vpd(&dev_entry->vpd);
1730
1731 ipr_err("-----New Device Information-----\n");
1732 ipr_log_ext_vpd(&dev_entry->new_vpd);
1733
1734 ipr_err("Cache Directory Card Information:\n");
1735 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1736
1737 ipr_err("Adapter Card Information:\n");
1738 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1739 }
1740 }
1741
1742 /**
1743 * ipr_log_sis64_config_error - Log a device error.
1744 * @ioa_cfg: ioa config struct
1745 * @hostrcb: hostrcb struct
1746 *
1747 * Return value:
1748 * none
1749 **/
1750 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1751 struct ipr_hostrcb *hostrcb)
1752 {
1753 int errors_logged, i;
1754 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1755 struct ipr_hostrcb_type_23_error *error;
1756 char buffer[IPR_MAX_RES_PATH_LENGTH];
1757
1758 error = &hostrcb->hcam.u.error64.u.type_23_error;
1759 errors_logged = be32_to_cpu(error->errors_logged);
1760
1761 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1762 be32_to_cpu(error->errors_detected), errors_logged);
1763
1764 dev_entry = error->dev;
1765
1766 for (i = 0; i < errors_logged; i++, dev_entry++) {
1767 ipr_err_separator;
1768
1769 ipr_err("Device %d : %s", i + 1,
1770 __ipr_format_res_path(dev_entry->res_path,
1771 buffer, sizeof(buffer)));
1772 ipr_log_ext_vpd(&dev_entry->vpd);
1773
1774 ipr_err("-----New Device Information-----\n");
1775 ipr_log_ext_vpd(&dev_entry->new_vpd);
1776
1777 ipr_err("Cache Directory Card Information:\n");
1778 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1779
1780 ipr_err("Adapter Card Information:\n");
1781 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1782 }
1783 }
1784
1785 /**
1786 * ipr_log_config_error - Log a configuration error.
1787 * @ioa_cfg: ioa config struct
1788 * @hostrcb: hostrcb struct
1789 *
1790 * Return value:
1791 * none
1792 **/
1793 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1794 struct ipr_hostrcb *hostrcb)
1795 {
1796 int errors_logged, i;
1797 struct ipr_hostrcb_device_data_entry *dev_entry;
1798 struct ipr_hostrcb_type_03_error *error;
1799
1800 error = &hostrcb->hcam.u.error.u.type_03_error;
1801 errors_logged = be32_to_cpu(error->errors_logged);
1802
1803 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1804 be32_to_cpu(error->errors_detected), errors_logged);
1805
1806 dev_entry = error->dev;
1807
1808 for (i = 0; i < errors_logged; i++, dev_entry++) {
1809 ipr_err_separator;
1810
1811 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1812 ipr_log_vpd(&dev_entry->vpd);
1813
1814 ipr_err("-----New Device Information-----\n");
1815 ipr_log_vpd(&dev_entry->new_vpd);
1816
1817 ipr_err("Cache Directory Card Information:\n");
1818 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1819
1820 ipr_err("Adapter Card Information:\n");
1821 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1822
1823 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1824 be32_to_cpu(dev_entry->ioa_data[0]),
1825 be32_to_cpu(dev_entry->ioa_data[1]),
1826 be32_to_cpu(dev_entry->ioa_data[2]),
1827 be32_to_cpu(dev_entry->ioa_data[3]),
1828 be32_to_cpu(dev_entry->ioa_data[4]));
1829 }
1830 }
1831
1832 /**
1833 * ipr_log_enhanced_array_error - Log an array configuration error.
1834 * @ioa_cfg: ioa config struct
1835 * @hostrcb: hostrcb struct
1836 *
1837 * Return value:
1838 * none
1839 **/
1840 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1841 struct ipr_hostrcb *hostrcb)
1842 {
1843 int i, num_entries;
1844 struct ipr_hostrcb_type_14_error *error;
1845 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1846 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1847
1848 error = &hostrcb->hcam.u.error.u.type_14_error;
1849
1850 ipr_err_separator;
1851
1852 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1853 error->protection_level,
1854 ioa_cfg->host->host_no,
1855 error->last_func_vset_res_addr.bus,
1856 error->last_func_vset_res_addr.target,
1857 error->last_func_vset_res_addr.lun);
1858
1859 ipr_err_separator;
1860
1861 array_entry = error->array_member;
1862 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1863 ARRAY_SIZE(error->array_member));
1864
1865 for (i = 0; i < num_entries; i++, array_entry++) {
1866 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1867 continue;
1868
1869 if (be32_to_cpu(error->exposed_mode_adn) == i)
1870 ipr_err("Exposed Array Member %d:\n", i);
1871 else
1872 ipr_err("Array Member %d:\n", i);
1873
1874 ipr_log_ext_vpd(&array_entry->vpd);
1875 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1876 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1877 "Expected Location");
1878
1879 ipr_err_separator;
1880 }
1881 }
1882
1883 /**
1884 * ipr_log_array_error - Log an array configuration error.
1885 * @ioa_cfg: ioa config struct
1886 * @hostrcb: hostrcb struct
1887 *
1888 * Return value:
1889 * none
1890 **/
1891 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1892 struct ipr_hostrcb *hostrcb)
1893 {
1894 int i;
1895 struct ipr_hostrcb_type_04_error *error;
1896 struct ipr_hostrcb_array_data_entry *array_entry;
1897 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1898
1899 error = &hostrcb->hcam.u.error.u.type_04_error;
1900
1901 ipr_err_separator;
1902
1903 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1904 error->protection_level,
1905 ioa_cfg->host->host_no,
1906 error->last_func_vset_res_addr.bus,
1907 error->last_func_vset_res_addr.target,
1908 error->last_func_vset_res_addr.lun);
1909
1910 ipr_err_separator;
1911
1912 array_entry = error->array_member;
1913
1914 for (i = 0; i < 18; i++) {
1915 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1916 continue;
1917
1918 if (be32_to_cpu(error->exposed_mode_adn) == i)
1919 ipr_err("Exposed Array Member %d:\n", i);
1920 else
1921 ipr_err("Array Member %d:\n", i);
1922
1923 ipr_log_vpd(&array_entry->vpd);
1924
1925 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1926 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1927 "Expected Location");
1928
1929 ipr_err_separator;
1930
1931 if (i == 9)
1932 array_entry = error->array_member2;
1933 else
1934 array_entry++;
1935 }
1936 }
1937
1938 /**
1939 * ipr_log_hex_data - Log additional hex IOA error data.
1940 * @ioa_cfg: ioa config struct
1941 * @data: IOA error data
1942 * @len: data length
1943 *
1944 * Return value:
1945 * none
1946 **/
1947 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, __be32 *data, int len)
1948 {
1949 int i;
1950
1951 if (len == 0)
1952 return;
1953
1954 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1955 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1956
1957 for (i = 0; i < len / 4; i += 4) {
1958 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1959 be32_to_cpu(data[i]),
1960 be32_to_cpu(data[i+1]),
1961 be32_to_cpu(data[i+2]),
1962 be32_to_cpu(data[i+3]));
1963 }
1964 }
1965
1966 /**
1967 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1968 * @ioa_cfg: ioa config struct
1969 * @hostrcb: hostrcb struct
1970 *
1971 * Return value:
1972 * none
1973 **/
1974 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1975 struct ipr_hostrcb *hostrcb)
1976 {
1977 struct ipr_hostrcb_type_17_error *error;
1978
1979 if (ioa_cfg->sis64)
1980 error = &hostrcb->hcam.u.error64.u.type_17_error;
1981 else
1982 error = &hostrcb->hcam.u.error.u.type_17_error;
1983
1984 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1985 strim(error->failure_reason);
1986
1987 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1988 be32_to_cpu(hostrcb->hcam.u.error.prc));
1989 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1990 ipr_log_hex_data(ioa_cfg, error->data,
1991 be32_to_cpu(hostrcb->hcam.length) -
1992 (offsetof(struct ipr_hostrcb_error, u) +
1993 offsetof(struct ipr_hostrcb_type_17_error, data)));
1994 }
1995
1996 /**
1997 * ipr_log_dual_ioa_error - Log a dual adapter error.
1998 * @ioa_cfg: ioa config struct
1999 * @hostrcb: hostrcb struct
2000 *
2001 * Return value:
2002 * none
2003 **/
2004 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
2005 struct ipr_hostrcb *hostrcb)
2006 {
2007 struct ipr_hostrcb_type_07_error *error;
2008
2009 error = &hostrcb->hcam.u.error.u.type_07_error;
2010 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2011 strim(error->failure_reason);
2012
2013 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
2014 be32_to_cpu(hostrcb->hcam.u.error.prc));
2015 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
2016 ipr_log_hex_data(ioa_cfg, error->data,
2017 be32_to_cpu(hostrcb->hcam.length) -
2018 (offsetof(struct ipr_hostrcb_error, u) +
2019 offsetof(struct ipr_hostrcb_type_07_error, data)));
2020 }
2021
2022 static const struct {
2023 u8 active;
2024 char *desc;
2025 } path_active_desc[] = {
2026 { IPR_PATH_NO_INFO, "Path" },
2027 { IPR_PATH_ACTIVE, "Active path" },
2028 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
2029 };
2030
2031 static const struct {
2032 u8 state;
2033 char *desc;
2034 } path_state_desc[] = {
2035 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
2036 { IPR_PATH_HEALTHY, "is healthy" },
2037 { IPR_PATH_DEGRADED, "is degraded" },
2038 { IPR_PATH_FAILED, "is failed" }
2039 };
2040
2041 /**
2042 * ipr_log_fabric_path - Log a fabric path error
2043 * @hostrcb: hostrcb struct
2044 * @fabric: fabric descriptor
2045 *
2046 * Return value:
2047 * none
2048 **/
2049 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
2050 struct ipr_hostrcb_fabric_desc *fabric)
2051 {
2052 int i, j;
2053 u8 path_state = fabric->path_state;
2054 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2055 u8 state = path_state & IPR_PATH_STATE_MASK;
2056
2057 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2058 if (path_active_desc[i].active != active)
2059 continue;
2060
2061 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2062 if (path_state_desc[j].state != state)
2063 continue;
2064
2065 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
2066 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
2067 path_active_desc[i].desc, path_state_desc[j].desc,
2068 fabric->ioa_port);
2069 } else if (fabric->cascaded_expander == 0xff) {
2070 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
2071 path_active_desc[i].desc, path_state_desc[j].desc,
2072 fabric->ioa_port, fabric->phy);
2073 } else if (fabric->phy == 0xff) {
2074 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
2075 path_active_desc[i].desc, path_state_desc[j].desc,
2076 fabric->ioa_port, fabric->cascaded_expander);
2077 } else {
2078 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
2079 path_active_desc[i].desc, path_state_desc[j].desc,
2080 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2081 }
2082 return;
2083 }
2084 }
2085
2086 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
2087 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2088 }
2089
2090 /**
2091 * ipr_log64_fabric_path - Log a fabric path error
2092 * @hostrcb: hostrcb struct
2093 * @fabric: fabric descriptor
2094 *
2095 * Return value:
2096 * none
2097 **/
2098 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
2099 struct ipr_hostrcb64_fabric_desc *fabric)
2100 {
2101 int i, j;
2102 u8 path_state = fabric->path_state;
2103 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2104 u8 state = path_state & IPR_PATH_STATE_MASK;
2105 char buffer[IPR_MAX_RES_PATH_LENGTH];
2106
2107 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2108 if (path_active_desc[i].active != active)
2109 continue;
2110
2111 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2112 if (path_state_desc[j].state != state)
2113 continue;
2114
2115 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
2116 path_active_desc[i].desc, path_state_desc[j].desc,
2117 ipr_format_res_path(hostrcb->ioa_cfg,
2118 fabric->res_path,
2119 buffer, sizeof(buffer)));
2120 return;
2121 }
2122 }
2123
2124 ipr_err("Path state=%02X Resource Path=%s\n", path_state,
2125 ipr_format_res_path(hostrcb->ioa_cfg, fabric->res_path,
2126 buffer, sizeof(buffer)));
2127 }
2128
2129 static const struct {
2130 u8 type;
2131 char *desc;
2132 } path_type_desc[] = {
2133 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
2134 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
2135 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
2136 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
2137 };
2138
2139 static const struct {
2140 u8 status;
2141 char *desc;
2142 } path_status_desc[] = {
2143 { IPR_PATH_CFG_NO_PROB, "Functional" },
2144 { IPR_PATH_CFG_DEGRADED, "Degraded" },
2145 { IPR_PATH_CFG_FAILED, "Failed" },
2146 { IPR_PATH_CFG_SUSPECT, "Suspect" },
2147 { IPR_PATH_NOT_DETECTED, "Missing" },
2148 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
2149 };
2150
2151 static const char *link_rate[] = {
2152 "unknown",
2153 "disabled",
2154 "phy reset problem",
2155 "spinup hold",
2156 "port selector",
2157 "unknown",
2158 "unknown",
2159 "unknown",
2160 "1.5Gbps",
2161 "3.0Gbps",
2162 "unknown",
2163 "unknown",
2164 "unknown",
2165 "unknown",
2166 "unknown",
2167 "unknown"
2168 };
2169
2170 /**
2171 * ipr_log_path_elem - Log a fabric path element.
2172 * @hostrcb: hostrcb struct
2173 * @cfg: fabric path element struct
2174 *
2175 * Return value:
2176 * none
2177 **/
2178 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
2179 struct ipr_hostrcb_config_element *cfg)
2180 {
2181 int i, j;
2182 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2183 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2184
2185 if (type == IPR_PATH_CFG_NOT_EXIST)
2186 return;
2187
2188 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2189 if (path_type_desc[i].type != type)
2190 continue;
2191
2192 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2193 if (path_status_desc[j].status != status)
2194 continue;
2195
2196 if (type == IPR_PATH_CFG_IOA_PORT) {
2197 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2198 path_status_desc[j].desc, path_type_desc[i].desc,
2199 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2200 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2201 } else {
2202 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2203 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2204 path_status_desc[j].desc, path_type_desc[i].desc,
2205 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2206 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2207 } else if (cfg->cascaded_expander == 0xff) {
2208 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2209 "WWN=%08X%08X\n", path_status_desc[j].desc,
2210 path_type_desc[i].desc, cfg->phy,
2211 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2212 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2213 } else if (cfg->phy == 0xff) {
2214 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2215 "WWN=%08X%08X\n", path_status_desc[j].desc,
2216 path_type_desc[i].desc, cfg->cascaded_expander,
2217 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2218 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2219 } else {
2220 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2221 "WWN=%08X%08X\n", path_status_desc[j].desc,
2222 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2223 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2224 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2225 }
2226 }
2227 return;
2228 }
2229 }
2230
2231 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2232 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2233 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2234 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2235 }
2236
2237 /**
2238 * ipr_log64_path_elem - Log a fabric path element.
2239 * @hostrcb: hostrcb struct
2240 * @cfg: fabric path element struct
2241 *
2242 * Return value:
2243 * none
2244 **/
2245 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2246 struct ipr_hostrcb64_config_element *cfg)
2247 {
2248 int i, j;
2249 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2250 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2251 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2252 char buffer[IPR_MAX_RES_PATH_LENGTH];
2253
2254 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2255 return;
2256
2257 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2258 if (path_type_desc[i].type != type)
2259 continue;
2260
2261 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2262 if (path_status_desc[j].status != status)
2263 continue;
2264
2265 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2266 path_status_desc[j].desc, path_type_desc[i].desc,
2267 ipr_format_res_path(hostrcb->ioa_cfg,
2268 cfg->res_path, buffer, sizeof(buffer)),
2269 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2270 be32_to_cpu(cfg->wwid[0]),
2271 be32_to_cpu(cfg->wwid[1]));
2272 return;
2273 }
2274 }
2275 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2276 "WWN=%08X%08X\n", cfg->type_status,
2277 ipr_format_res_path(hostrcb->ioa_cfg,
2278 cfg->res_path, buffer, sizeof(buffer)),
2279 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2280 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2281 }
2282
2283 /**
2284 * ipr_log_fabric_error - Log a fabric error.
2285 * @ioa_cfg: ioa config struct
2286 * @hostrcb: hostrcb struct
2287 *
2288 * Return value:
2289 * none
2290 **/
2291 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2292 struct ipr_hostrcb *hostrcb)
2293 {
2294 struct ipr_hostrcb_type_20_error *error;
2295 struct ipr_hostrcb_fabric_desc *fabric;
2296 struct ipr_hostrcb_config_element *cfg;
2297 int i, add_len;
2298
2299 error = &hostrcb->hcam.u.error.u.type_20_error;
2300 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2301 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2302
2303 add_len = be32_to_cpu(hostrcb->hcam.length) -
2304 (offsetof(struct ipr_hostrcb_error, u) +
2305 offsetof(struct ipr_hostrcb_type_20_error, desc));
2306
2307 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2308 ipr_log_fabric_path(hostrcb, fabric);
2309 for_each_fabric_cfg(fabric, cfg)
2310 ipr_log_path_elem(hostrcb, cfg);
2311
2312 add_len -= be16_to_cpu(fabric->length);
2313 fabric = (struct ipr_hostrcb_fabric_desc *)
2314 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2315 }
2316
2317 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2318 }
2319
2320 /**
2321 * ipr_log_sis64_array_error - Log a sis64 array error.
2322 * @ioa_cfg: ioa config struct
2323 * @hostrcb: hostrcb struct
2324 *
2325 * Return value:
2326 * none
2327 **/
2328 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2329 struct ipr_hostrcb *hostrcb)
2330 {
2331 int i, num_entries;
2332 struct ipr_hostrcb_type_24_error *error;
2333 struct ipr_hostrcb64_array_data_entry *array_entry;
2334 char buffer[IPR_MAX_RES_PATH_LENGTH];
2335 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2336
2337 error = &hostrcb->hcam.u.error64.u.type_24_error;
2338
2339 ipr_err_separator;
2340
2341 ipr_err("RAID %s Array Configuration: %s\n",
2342 error->protection_level,
2343 ipr_format_res_path(ioa_cfg, error->last_res_path,
2344 buffer, sizeof(buffer)));
2345
2346 ipr_err_separator;
2347
2348 array_entry = error->array_member;
2349 num_entries = min_t(u32, error->num_entries,
2350 ARRAY_SIZE(error->array_member));
2351
2352 for (i = 0; i < num_entries; i++, array_entry++) {
2353
2354 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2355 continue;
2356
2357 if (error->exposed_mode_adn == i)
2358 ipr_err("Exposed Array Member %d:\n", i);
2359 else
2360 ipr_err("Array Member %d:\n", i);
2361
2362 ipr_err("Array Member %d:\n", i);
2363 ipr_log_ext_vpd(&array_entry->vpd);
2364 ipr_err("Current Location: %s\n",
2365 ipr_format_res_path(ioa_cfg, array_entry->res_path,
2366 buffer, sizeof(buffer)));
2367 ipr_err("Expected Location: %s\n",
2368 ipr_format_res_path(ioa_cfg,
2369 array_entry->expected_res_path,
2370 buffer, sizeof(buffer)));
2371
2372 ipr_err_separator;
2373 }
2374 }
2375
2376 /**
2377 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2378 * @ioa_cfg: ioa config struct
2379 * @hostrcb: hostrcb struct
2380 *
2381 * Return value:
2382 * none
2383 **/
2384 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2385 struct ipr_hostrcb *hostrcb)
2386 {
2387 struct ipr_hostrcb_type_30_error *error;
2388 struct ipr_hostrcb64_fabric_desc *fabric;
2389 struct ipr_hostrcb64_config_element *cfg;
2390 int i, add_len;
2391
2392 error = &hostrcb->hcam.u.error64.u.type_30_error;
2393
2394 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2395 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2396
2397 add_len = be32_to_cpu(hostrcb->hcam.length) -
2398 (offsetof(struct ipr_hostrcb64_error, u) +
2399 offsetof(struct ipr_hostrcb_type_30_error, desc));
2400
2401 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2402 ipr_log64_fabric_path(hostrcb, fabric);
2403 for_each_fabric_cfg(fabric, cfg)
2404 ipr_log64_path_elem(hostrcb, cfg);
2405
2406 add_len -= be16_to_cpu(fabric->length);
2407 fabric = (struct ipr_hostrcb64_fabric_desc *)
2408 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2409 }
2410
2411 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2412 }
2413
2414 /**
2415 * ipr_log_generic_error - Log an adapter error.
2416 * @ioa_cfg: ioa config struct
2417 * @hostrcb: hostrcb struct
2418 *
2419 * Return value:
2420 * none
2421 **/
2422 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2423 struct ipr_hostrcb *hostrcb)
2424 {
2425 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2426 be32_to_cpu(hostrcb->hcam.length));
2427 }
2428
2429 /**
2430 * ipr_log_sis64_device_error - Log a cache error.
2431 * @ioa_cfg: ioa config struct
2432 * @hostrcb: hostrcb struct
2433 *
2434 * Return value:
2435 * none
2436 **/
2437 static void ipr_log_sis64_device_error(struct ipr_ioa_cfg *ioa_cfg,
2438 struct ipr_hostrcb *hostrcb)
2439 {
2440 struct ipr_hostrcb_type_21_error *error;
2441 char buffer[IPR_MAX_RES_PATH_LENGTH];
2442
2443 error = &hostrcb->hcam.u.error64.u.type_21_error;
2444
2445 ipr_err("-----Failing Device Information-----\n");
2446 ipr_err("World Wide Unique ID: %08X%08X%08X%08X\n",
2447 be32_to_cpu(error->wwn[0]), be32_to_cpu(error->wwn[1]),
2448 be32_to_cpu(error->wwn[2]), be32_to_cpu(error->wwn[3]));
2449 ipr_err("Device Resource Path: %s\n",
2450 __ipr_format_res_path(error->res_path,
2451 buffer, sizeof(buffer)));
2452 error->primary_problem_desc[sizeof(error->primary_problem_desc) - 1] = '\0';
2453 error->second_problem_desc[sizeof(error->second_problem_desc) - 1] = '\0';
2454 ipr_err("Primary Problem Description: %s\n", error->primary_problem_desc);
2455 ipr_err("Secondary Problem Description: %s\n", error->second_problem_desc);
2456 ipr_err("SCSI Sense Data:\n");
2457 ipr_log_hex_data(ioa_cfg, error->sense_data, sizeof(error->sense_data));
2458 ipr_err("SCSI Command Descriptor Block: \n");
2459 ipr_log_hex_data(ioa_cfg, error->cdb, sizeof(error->cdb));
2460
2461 ipr_err("Additional IOA Data:\n");
2462 ipr_log_hex_data(ioa_cfg, error->ioa_data, be32_to_cpu(error->length_of_error));
2463 }
2464
2465 /**
2466 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2467 * @ioasc: IOASC
2468 *
2469 * This function will return the index of into the ipr_error_table
2470 * for the specified IOASC. If the IOASC is not in the table,
2471 * 0 will be returned, which points to the entry used for unknown errors.
2472 *
2473 * Return value:
2474 * index into the ipr_error_table
2475 **/
2476 static u32 ipr_get_error(u32 ioasc)
2477 {
2478 int i;
2479
2480 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2481 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2482 return i;
2483
2484 return 0;
2485 }
2486
2487 /**
2488 * ipr_handle_log_data - Log an adapter error.
2489 * @ioa_cfg: ioa config struct
2490 * @hostrcb: hostrcb struct
2491 *
2492 * This function logs an adapter error to the system.
2493 *
2494 * Return value:
2495 * none
2496 **/
2497 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2498 struct ipr_hostrcb *hostrcb)
2499 {
2500 u32 ioasc;
2501 int error_index;
2502 struct ipr_hostrcb_type_21_error *error;
2503
2504 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2505 return;
2506
2507 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2508 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2509
2510 if (ioa_cfg->sis64)
2511 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2512 else
2513 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2514
2515 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2516 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2517 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2518 scsi_report_bus_reset(ioa_cfg->host,
2519 hostrcb->hcam.u.error.fd_res_addr.bus);
2520 }
2521
2522 error_index = ipr_get_error(ioasc);
2523
2524 if (!ipr_error_table[error_index].log_hcam)
2525 return;
2526
2527 if (ioasc == IPR_IOASC_HW_CMD_FAILED &&
2528 hostrcb->hcam.overlay_id == IPR_HOST_RCB_OVERLAY_ID_21) {
2529 error = &hostrcb->hcam.u.error64.u.type_21_error;
2530
2531 if (((be32_to_cpu(error->sense_data[0]) & 0x0000ff00) >> 8) == ILLEGAL_REQUEST &&
2532 ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
2533 return;
2534 }
2535
2536 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2537
2538 /* Set indication we have logged an error */
2539 ioa_cfg->errors_logged++;
2540
2541 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2542 return;
2543 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2544 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2545
2546 switch (hostrcb->hcam.overlay_id) {
2547 case IPR_HOST_RCB_OVERLAY_ID_2:
2548 ipr_log_cache_error(ioa_cfg, hostrcb);
2549 break;
2550 case IPR_HOST_RCB_OVERLAY_ID_3:
2551 ipr_log_config_error(ioa_cfg, hostrcb);
2552 break;
2553 case IPR_HOST_RCB_OVERLAY_ID_4:
2554 case IPR_HOST_RCB_OVERLAY_ID_6:
2555 ipr_log_array_error(ioa_cfg, hostrcb);
2556 break;
2557 case IPR_HOST_RCB_OVERLAY_ID_7:
2558 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2559 break;
2560 case IPR_HOST_RCB_OVERLAY_ID_12:
2561 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2562 break;
2563 case IPR_HOST_RCB_OVERLAY_ID_13:
2564 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2565 break;
2566 case IPR_HOST_RCB_OVERLAY_ID_14:
2567 case IPR_HOST_RCB_OVERLAY_ID_16:
2568 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2569 break;
2570 case IPR_HOST_RCB_OVERLAY_ID_17:
2571 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2572 break;
2573 case IPR_HOST_RCB_OVERLAY_ID_20:
2574 ipr_log_fabric_error(ioa_cfg, hostrcb);
2575 break;
2576 case IPR_HOST_RCB_OVERLAY_ID_21:
2577 ipr_log_sis64_device_error(ioa_cfg, hostrcb);
2578 break;
2579 case IPR_HOST_RCB_OVERLAY_ID_23:
2580 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2581 break;
2582 case IPR_HOST_RCB_OVERLAY_ID_24:
2583 case IPR_HOST_RCB_OVERLAY_ID_26:
2584 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2585 break;
2586 case IPR_HOST_RCB_OVERLAY_ID_30:
2587 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2588 break;
2589 case IPR_HOST_RCB_OVERLAY_ID_1:
2590 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2591 default:
2592 ipr_log_generic_error(ioa_cfg, hostrcb);
2593 break;
2594 }
2595 }
2596
2597 static struct ipr_hostrcb *ipr_get_free_hostrcb(struct ipr_ioa_cfg *ioa)
2598 {
2599 struct ipr_hostrcb *hostrcb;
2600
2601 hostrcb = list_first_entry_or_null(&ioa->hostrcb_free_q,
2602 struct ipr_hostrcb, queue);
2603
2604 if (unlikely(!hostrcb)) {
2605 dev_info(&ioa->pdev->dev, "Reclaiming async error buffers.");
2606 hostrcb = list_first_entry_or_null(&ioa->hostrcb_report_q,
2607 struct ipr_hostrcb, queue);
2608 }
2609
2610 list_del_init(&hostrcb->queue);
2611 return hostrcb;
2612 }
2613
2614 /**
2615 * ipr_process_error - Op done function for an adapter error log.
2616 * @ipr_cmd: ipr command struct
2617 *
2618 * This function is the op done function for an error log host
2619 * controlled async from the adapter. It will log the error and
2620 * send the HCAM back to the adapter.
2621 *
2622 * Return value:
2623 * none
2624 **/
2625 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2626 {
2627 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2628 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2629 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2630 u32 fd_ioasc;
2631
2632 if (ioa_cfg->sis64)
2633 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2634 else
2635 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2636
2637 list_del_init(&hostrcb->queue);
2638 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
2639
2640 if (!ioasc) {
2641 ipr_handle_log_data(ioa_cfg, hostrcb);
2642 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2643 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2644 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
2645 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) {
2646 dev_err(&ioa_cfg->pdev->dev,
2647 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2648 }
2649
2650 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_report_q);
2651 schedule_work(&ioa_cfg->work_q);
2652 hostrcb = ipr_get_free_hostrcb(ioa_cfg);
2653
2654 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2655 }
2656
2657 /**
2658 * ipr_timeout - An internally generated op has timed out.
2659 * @ipr_cmd: ipr command struct
2660 *
2661 * This function blocks host requests and initiates an
2662 * adapter reset.
2663 *
2664 * Return value:
2665 * none
2666 **/
2667 static void ipr_timeout(struct timer_list *t)
2668 {
2669 struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
2670 unsigned long lock_flags = 0;
2671 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2672
2673 ENTER;
2674 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2675
2676 ioa_cfg->errors_logged++;
2677 dev_err(&ioa_cfg->pdev->dev,
2678 "Adapter being reset due to command timeout.\n");
2679
2680 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2681 ioa_cfg->sdt_state = GET_DUMP;
2682
2683 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2684 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2685
2686 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2687 LEAVE;
2688 }
2689
2690 /**
2691 * ipr_oper_timeout - Adapter timed out transitioning to operational
2692 * @ipr_cmd: ipr command struct
2693 *
2694 * This function blocks host requests and initiates an
2695 * adapter reset.
2696 *
2697 * Return value:
2698 * none
2699 **/
2700 static void ipr_oper_timeout(struct timer_list *t)
2701 {
2702 struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
2703 unsigned long lock_flags = 0;
2704 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2705
2706 ENTER;
2707 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2708
2709 ioa_cfg->errors_logged++;
2710 dev_err(&ioa_cfg->pdev->dev,
2711 "Adapter timed out transitioning to operational.\n");
2712
2713 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2714 ioa_cfg->sdt_state = GET_DUMP;
2715
2716 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2717 if (ipr_fastfail)
2718 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2719 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2720 }
2721
2722 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2723 LEAVE;
2724 }
2725
2726 /**
2727 * ipr_find_ses_entry - Find matching SES in SES table
2728 * @res: resource entry struct of SES
2729 *
2730 * Return value:
2731 * pointer to SES table entry / NULL on failure
2732 **/
2733 static const struct ipr_ses_table_entry *
2734 ipr_find_ses_entry(struct ipr_resource_entry *res)
2735 {
2736 int i, j, matches;
2737 struct ipr_std_inq_vpids *vpids;
2738 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2739
2740 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2741 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2742 if (ste->compare_product_id_byte[j] == 'X') {
2743 vpids = &res->std_inq_data.vpids;
2744 if (vpids->product_id[j] == ste->product_id[j])
2745 matches++;
2746 else
2747 break;
2748 } else
2749 matches++;
2750 }
2751
2752 if (matches == IPR_PROD_ID_LEN)
2753 return ste;
2754 }
2755
2756 return NULL;
2757 }
2758
2759 /**
2760 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2761 * @ioa_cfg: ioa config struct
2762 * @bus: SCSI bus
2763 * @bus_width: bus width
2764 *
2765 * Return value:
2766 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2767 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2768 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2769 * max 160MHz = max 320MB/sec).
2770 **/
2771 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2772 {
2773 struct ipr_resource_entry *res;
2774 const struct ipr_ses_table_entry *ste;
2775 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2776
2777 /* Loop through each config table entry in the config table buffer */
2778 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2779 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2780 continue;
2781
2782 if (bus != res->bus)
2783 continue;
2784
2785 if (!(ste = ipr_find_ses_entry(res)))
2786 continue;
2787
2788 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2789 }
2790
2791 return max_xfer_rate;
2792 }
2793
2794 /**
2795 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2796 * @ioa_cfg: ioa config struct
2797 * @max_delay: max delay in micro-seconds to wait
2798 *
2799 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2800 *
2801 * Return value:
2802 * 0 on success / other on failure
2803 **/
2804 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2805 {
2806 volatile u32 pcii_reg;
2807 int delay = 1;
2808
2809 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2810 while (delay < max_delay) {
2811 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2812
2813 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2814 return 0;
2815
2816 /* udelay cannot be used if delay is more than a few milliseconds */
2817 if ((delay / 1000) > MAX_UDELAY_MS)
2818 mdelay(delay / 1000);
2819 else
2820 udelay(delay);
2821
2822 delay += delay;
2823 }
2824 return -EIO;
2825 }
2826
2827 /**
2828 * ipr_get_sis64_dump_data_section - Dump IOA memory
2829 * @ioa_cfg: ioa config struct
2830 * @start_addr: adapter address to dump
2831 * @dest: destination kernel buffer
2832 * @length_in_words: length to dump in 4 byte words
2833 *
2834 * Return value:
2835 * 0 on success
2836 **/
2837 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2838 u32 start_addr,
2839 __be32 *dest, u32 length_in_words)
2840 {
2841 int i;
2842
2843 for (i = 0; i < length_in_words; i++) {
2844 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2845 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2846 dest++;
2847 }
2848
2849 return 0;
2850 }
2851
2852 /**
2853 * ipr_get_ldump_data_section - Dump IOA memory
2854 * @ioa_cfg: ioa config struct
2855 * @start_addr: adapter address to dump
2856 * @dest: destination kernel buffer
2857 * @length_in_words: length to dump in 4 byte words
2858 *
2859 * Return value:
2860 * 0 on success / -EIO on failure
2861 **/
2862 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2863 u32 start_addr,
2864 __be32 *dest, u32 length_in_words)
2865 {
2866 volatile u32 temp_pcii_reg;
2867 int i, delay = 0;
2868
2869 if (ioa_cfg->sis64)
2870 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2871 dest, length_in_words);
2872
2873 /* Write IOA interrupt reg starting LDUMP state */
2874 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2875 ioa_cfg->regs.set_uproc_interrupt_reg32);
2876
2877 /* Wait for IO debug acknowledge */
2878 if (ipr_wait_iodbg_ack(ioa_cfg,
2879 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2880 dev_err(&ioa_cfg->pdev->dev,
2881 "IOA dump long data transfer timeout\n");
2882 return -EIO;
2883 }
2884
2885 /* Signal LDUMP interlocked - clear IO debug ack */
2886 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2887 ioa_cfg->regs.clr_interrupt_reg);
2888
2889 /* Write Mailbox with starting address */
2890 writel(start_addr, ioa_cfg->ioa_mailbox);
2891
2892 /* Signal address valid - clear IOA Reset alert */
2893 writel(IPR_UPROCI_RESET_ALERT,
2894 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2895
2896 for (i = 0; i < length_in_words; i++) {
2897 /* Wait for IO debug acknowledge */
2898 if (ipr_wait_iodbg_ack(ioa_cfg,
2899 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2900 dev_err(&ioa_cfg->pdev->dev,
2901 "IOA dump short data transfer timeout\n");
2902 return -EIO;
2903 }
2904
2905 /* Read data from mailbox and increment destination pointer */
2906 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2907 dest++;
2908
2909 /* For all but the last word of data, signal data received */
2910 if (i < (length_in_words - 1)) {
2911 /* Signal dump data received - Clear IO debug Ack */
2912 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2913 ioa_cfg->regs.clr_interrupt_reg);
2914 }
2915 }
2916
2917 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2918 writel(IPR_UPROCI_RESET_ALERT,
2919 ioa_cfg->regs.set_uproc_interrupt_reg32);
2920
2921 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2922 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2923
2924 /* Signal dump data received - Clear IO debug Ack */
2925 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2926 ioa_cfg->regs.clr_interrupt_reg);
2927
2928 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2929 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2930 temp_pcii_reg =
2931 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2932
2933 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2934 return 0;
2935
2936 udelay(10);
2937 delay += 10;
2938 }
2939
2940 return 0;
2941 }
2942
2943 #ifdef CONFIG_SCSI_IPR_DUMP
2944 /**
2945 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2946 * @ioa_cfg: ioa config struct
2947 * @pci_address: adapter address
2948 * @length: length of data to copy
2949 *
2950 * Copy data from PCI adapter to kernel buffer.
2951 * Note: length MUST be a 4 byte multiple
2952 * Return value:
2953 * 0 on success / other on failure
2954 **/
2955 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2956 unsigned long pci_address, u32 length)
2957 {
2958 int bytes_copied = 0;
2959 int cur_len, rc, rem_len, rem_page_len, max_dump_size;
2960 __be32 *page;
2961 unsigned long lock_flags = 0;
2962 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2963
2964 if (ioa_cfg->sis64)
2965 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2966 else
2967 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2968
2969 while (bytes_copied < length &&
2970 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
2971 if (ioa_dump->page_offset >= PAGE_SIZE ||
2972 ioa_dump->page_offset == 0) {
2973 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2974
2975 if (!page) {
2976 ipr_trace;
2977 return bytes_copied;
2978 }
2979
2980 ioa_dump->page_offset = 0;
2981 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2982 ioa_dump->next_page_index++;
2983 } else
2984 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2985
2986 rem_len = length - bytes_copied;
2987 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2988 cur_len = min(rem_len, rem_page_len);
2989
2990 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2991 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2992 rc = -EIO;
2993 } else {
2994 rc = ipr_get_ldump_data_section(ioa_cfg,
2995 pci_address + bytes_copied,
2996 &page[ioa_dump->page_offset / 4],
2997 (cur_len / sizeof(u32)));
2998 }
2999 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3000
3001 if (!rc) {
3002 ioa_dump->page_offset += cur_len;
3003 bytes_copied += cur_len;
3004 } else {
3005 ipr_trace;
3006 break;
3007 }
3008 schedule();
3009 }
3010
3011 return bytes_copied;
3012 }
3013
3014 /**
3015 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
3016 * @hdr: dump entry header struct
3017 *
3018 * Return value:
3019 * nothing
3020 **/
3021 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
3022 {
3023 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
3024 hdr->num_elems = 1;
3025 hdr->offset = sizeof(*hdr);
3026 hdr->status = IPR_DUMP_STATUS_SUCCESS;
3027 }
3028
3029 /**
3030 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
3031 * @ioa_cfg: ioa config struct
3032 * @driver_dump: driver dump struct
3033 *
3034 * Return value:
3035 * nothing
3036 **/
3037 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
3038 struct ipr_driver_dump *driver_dump)
3039 {
3040 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3041
3042 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
3043 driver_dump->ioa_type_entry.hdr.len =
3044 sizeof(struct ipr_dump_ioa_type_entry) -
3045 sizeof(struct ipr_dump_entry_header);
3046 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3047 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
3048 driver_dump->ioa_type_entry.type = ioa_cfg->type;
3049 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
3050 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
3051 ucode_vpd->minor_release[1];
3052 driver_dump->hdr.num_entries++;
3053 }
3054
3055 /**
3056 * ipr_dump_version_data - Fill in the driver version in the dump.
3057 * @ioa_cfg: ioa config struct
3058 * @driver_dump: driver dump struct
3059 *
3060 * Return value:
3061 * nothing
3062 **/
3063 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
3064 struct ipr_driver_dump *driver_dump)
3065 {
3066 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
3067 driver_dump->version_entry.hdr.len =
3068 sizeof(struct ipr_dump_version_entry) -
3069 sizeof(struct ipr_dump_entry_header);
3070 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3071 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
3072 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
3073 driver_dump->hdr.num_entries++;
3074 }
3075
3076 /**
3077 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
3078 * @ioa_cfg: ioa config struct
3079 * @driver_dump: driver dump struct
3080 *
3081 * Return value:
3082 * nothing
3083 **/
3084 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
3085 struct ipr_driver_dump *driver_dump)
3086 {
3087 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
3088 driver_dump->trace_entry.hdr.len =
3089 sizeof(struct ipr_dump_trace_entry) -
3090 sizeof(struct ipr_dump_entry_header);
3091 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3092 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
3093 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
3094 driver_dump->hdr.num_entries++;
3095 }
3096
3097 /**
3098 * ipr_dump_location_data - Fill in the IOA location in the dump.
3099 * @ioa_cfg: ioa config struct
3100 * @driver_dump: driver dump struct
3101 *
3102 * Return value:
3103 * nothing
3104 **/
3105 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
3106 struct ipr_driver_dump *driver_dump)
3107 {
3108 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
3109 driver_dump->location_entry.hdr.len =
3110 sizeof(struct ipr_dump_location_entry) -
3111 sizeof(struct ipr_dump_entry_header);
3112 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3113 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
3114 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
3115 driver_dump->hdr.num_entries++;
3116 }
3117
3118 /**
3119 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
3120 * @ioa_cfg: ioa config struct
3121 * @dump: dump struct
3122 *
3123 * Return value:
3124 * nothing
3125 **/
3126 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
3127 {
3128 unsigned long start_addr, sdt_word;
3129 unsigned long lock_flags = 0;
3130 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
3131 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
3132 u32 num_entries, max_num_entries, start_off, end_off;
3133 u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
3134 struct ipr_sdt *sdt;
3135 int valid = 1;
3136 int i;
3137
3138 ENTER;
3139
3140 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3141
3142 if (ioa_cfg->sdt_state != READ_DUMP) {
3143 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3144 return;
3145 }
3146
3147 if (ioa_cfg->sis64) {
3148 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3149 ssleep(IPR_DUMP_DELAY_SECONDS);
3150 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3151 }
3152
3153 start_addr = readl(ioa_cfg->ioa_mailbox);
3154
3155 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
3156 dev_err(&ioa_cfg->pdev->dev,
3157 "Invalid dump table format: %lx\n", start_addr);
3158 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3159 return;
3160 }
3161
3162 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
3163
3164 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
3165
3166 /* Initialize the overall dump header */
3167 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
3168 driver_dump->hdr.num_entries = 1;
3169 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
3170 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
3171 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
3172 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
3173
3174 ipr_dump_version_data(ioa_cfg, driver_dump);
3175 ipr_dump_location_data(ioa_cfg, driver_dump);
3176 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
3177 ipr_dump_trace_data(ioa_cfg, driver_dump);
3178
3179 /* Update dump_header */
3180 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
3181
3182 /* IOA Dump entry */
3183 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
3184 ioa_dump->hdr.len = 0;
3185 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3186 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
3187
3188 /* First entries in sdt are actually a list of dump addresses and
3189 lengths to gather the real dump data. sdt represents the pointer
3190 to the ioa generated dump table. Dump data will be extracted based
3191 on entries in this table */
3192 sdt = &ioa_dump->sdt;
3193
3194 if (ioa_cfg->sis64) {
3195 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
3196 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
3197 } else {
3198 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
3199 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
3200 }
3201
3202 bytes_to_copy = offsetof(struct ipr_sdt, entry) +
3203 (max_num_entries * sizeof(struct ipr_sdt_entry));
3204 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
3205 bytes_to_copy / sizeof(__be32));
3206
3207 /* Smart Dump table is ready to use and the first entry is valid */
3208 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
3209 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
3210 dev_err(&ioa_cfg->pdev->dev,
3211 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
3212 rc, be32_to_cpu(sdt->hdr.state));
3213 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
3214 ioa_cfg->sdt_state = DUMP_OBTAINED;
3215 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3216 return;
3217 }
3218
3219 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
3220
3221 if (num_entries > max_num_entries)
3222 num_entries = max_num_entries;
3223
3224 /* Update dump length to the actual data to be copied */
3225 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
3226 if (ioa_cfg->sis64)
3227 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
3228 else
3229 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
3230
3231 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3232
3233 for (i = 0; i < num_entries; i++) {
3234 if (ioa_dump->hdr.len > max_dump_size) {
3235 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3236 break;
3237 }
3238
3239 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
3240 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3241 if (ioa_cfg->sis64)
3242 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3243 else {
3244 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3245 end_off = be32_to_cpu(sdt->entry[i].end_token);
3246
3247 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3248 bytes_to_copy = end_off - start_off;
3249 else
3250 valid = 0;
3251 }
3252 if (valid) {
3253 if (bytes_to_copy > max_dump_size) {
3254 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3255 continue;
3256 }
3257
3258 /* Copy data from adapter to driver buffers */
3259 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3260 bytes_to_copy);
3261
3262 ioa_dump->hdr.len += bytes_copied;
3263
3264 if (bytes_copied != bytes_to_copy) {
3265 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3266 break;
3267 }
3268 }
3269 }
3270 }
3271
3272 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3273
3274 /* Update dump_header */
3275 driver_dump->hdr.len += ioa_dump->hdr.len;
3276 wmb();
3277 ioa_cfg->sdt_state = DUMP_OBTAINED;
3278 LEAVE;
3279 }
3280
3281 #else
3282 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0)
3283 #endif
3284
3285 /**
3286 * ipr_release_dump - Free adapter dump memory
3287 * @kref: kref struct
3288 *
3289 * Return value:
3290 * nothing
3291 **/
3292 static void ipr_release_dump(struct kref *kref)
3293 {
3294 struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref);
3295 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3296 unsigned long lock_flags = 0;
3297 int i;
3298
3299 ENTER;
3300 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3301 ioa_cfg->dump = NULL;
3302 ioa_cfg->sdt_state = INACTIVE;
3303 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3304
3305 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3306 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3307
3308 vfree(dump->ioa_dump.ioa_data);
3309 kfree(dump);
3310 LEAVE;
3311 }
3312
3313 /**
3314 * ipr_worker_thread - Worker thread
3315 * @work: ioa config struct
3316 *
3317 * Called at task level from a work thread. This function takes care
3318 * of adding and removing device from the mid-layer as configuration
3319 * changes are detected by the adapter.
3320 *
3321 * Return value:
3322 * nothing
3323 **/
3324 static void ipr_worker_thread(struct work_struct *work)
3325 {
3326 unsigned long lock_flags;
3327 struct ipr_resource_entry *res;
3328 struct scsi_device *sdev;
3329 struct ipr_dump *dump;
3330 struct ipr_ioa_cfg *ioa_cfg =
3331 container_of(work, struct ipr_ioa_cfg, work_q);
3332 u8 bus, target, lun;
3333 int did_work;
3334
3335 ENTER;
3336 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3337
3338 if (ioa_cfg->sdt_state == READ_DUMP) {
3339 dump = ioa_cfg->dump;
3340 if (!dump) {
3341 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3342 return;
3343 }
3344 kref_get(&dump->kref);
3345 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3346 ipr_get_ioa_dump(ioa_cfg, dump);
3347 kref_put(&dump->kref, ipr_release_dump);
3348
3349 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3350 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout)
3351 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3352 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3353 return;
3354 }
3355
3356 if (ioa_cfg->scsi_unblock) {
3357 ioa_cfg->scsi_unblock = 0;
3358 ioa_cfg->scsi_blocked = 0;
3359 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3360 scsi_unblock_requests(ioa_cfg->host);
3361 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3362 if (ioa_cfg->scsi_blocked)
3363 scsi_block_requests(ioa_cfg->host);
3364 }
3365
3366 if (!ioa_cfg->scan_enabled) {
3367 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3368 return;
3369 }
3370
3371 restart:
3372 do {
3373 did_work = 0;
3374 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
3375 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3376 return;
3377 }
3378
3379 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3380 if (res->del_from_ml && res->sdev) {
3381 did_work = 1;
3382 sdev = res->sdev;
3383 if (!scsi_device_get(sdev)) {
3384 if (!res->add_to_ml)
3385 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3386 else
3387 res->del_from_ml = 0;
3388 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3389 scsi_remove_device(sdev);
3390 scsi_device_put(sdev);
3391 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3392 }
3393 break;
3394 }
3395 }
3396 } while (did_work);
3397
3398 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3399 if (res->add_to_ml) {
3400 bus = res->bus;
3401 target = res->target;
3402 lun = res->lun;
3403 res->add_to_ml = 0;
3404 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3405 scsi_add_device(ioa_cfg->host, bus, target, lun);
3406 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3407 goto restart;
3408 }
3409 }
3410
3411 ioa_cfg->scan_done = 1;
3412 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3413 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3414 LEAVE;
3415 }
3416
3417 #ifdef CONFIG_SCSI_IPR_TRACE
3418 /**
3419 * ipr_read_trace - Dump the adapter trace
3420 * @filp: open sysfs file
3421 * @kobj: kobject struct
3422 * @bin_attr: bin_attribute struct
3423 * @buf: buffer
3424 * @off: offset
3425 * @count: buffer size
3426 *
3427 * Return value:
3428 * number of bytes printed to buffer
3429 **/
3430 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3431 struct bin_attribute *bin_attr,
3432 char *buf, loff_t off, size_t count)
3433 {
3434 struct device *dev = container_of(kobj, struct device, kobj);
3435 struct Scsi_Host *shost = class_to_shost(dev);
3436 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3437 unsigned long lock_flags = 0;
3438 ssize_t ret;
3439
3440 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3441 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3442 IPR_TRACE_SIZE);
3443 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3444
3445 return ret;
3446 }
3447
3448 static struct bin_attribute ipr_trace_attr = {
3449 .attr = {
3450 .name = "trace",
3451 .mode = S_IRUGO,
3452 },
3453 .size = 0,
3454 .read = ipr_read_trace,
3455 };
3456 #endif
3457
3458 /**
3459 * ipr_show_fw_version - Show the firmware version
3460 * @dev: class device struct
3461 * @buf: buffer
3462 *
3463 * Return value:
3464 * number of bytes printed to buffer
3465 **/
3466 static ssize_t ipr_show_fw_version(struct device *dev,
3467 struct device_attribute *attr, char *buf)
3468 {
3469 struct Scsi_Host *shost = class_to_shost(dev);
3470 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3471 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3472 unsigned long lock_flags = 0;
3473 int len;
3474
3475 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3476 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3477 ucode_vpd->major_release, ucode_vpd->card_type,
3478 ucode_vpd->minor_release[0],
3479 ucode_vpd->minor_release[1]);
3480 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3481 return len;
3482 }
3483
3484 static struct device_attribute ipr_fw_version_attr = {
3485 .attr = {
3486 .name = "fw_version",
3487 .mode = S_IRUGO,
3488 },
3489 .show = ipr_show_fw_version,
3490 };
3491
3492 /**
3493 * ipr_show_log_level - Show the adapter's error logging level
3494 * @dev: class device struct
3495 * @buf: buffer
3496 *
3497 * Return value:
3498 * number of bytes printed to buffer
3499 **/
3500 static ssize_t ipr_show_log_level(struct device *dev,
3501 struct device_attribute *attr, char *buf)
3502 {
3503 struct Scsi_Host *shost = class_to_shost(dev);
3504 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3505 unsigned long lock_flags = 0;
3506 int len;
3507
3508 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3509 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3510 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3511 return len;
3512 }
3513
3514 /**
3515 * ipr_store_log_level - Change the adapter's error logging level
3516 * @dev: class device struct
3517 * @buf: buffer
3518 *
3519 * Return value:
3520 * number of bytes printed to buffer
3521 **/
3522 static ssize_t ipr_store_log_level(struct device *dev,
3523 struct device_attribute *attr,
3524 const char *buf, size_t count)
3525 {
3526 struct Scsi_Host *shost = class_to_shost(dev);
3527 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3528 unsigned long lock_flags = 0;
3529
3530 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3531 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3532 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3533 return strlen(buf);
3534 }
3535
3536 static struct device_attribute ipr_log_level_attr = {
3537 .attr = {
3538 .name = "log_level",
3539 .mode = S_IRUGO | S_IWUSR,
3540 },
3541 .show = ipr_show_log_level,
3542 .store = ipr_store_log_level
3543 };
3544
3545 /**
3546 * ipr_store_diagnostics - IOA Diagnostics interface
3547 * @dev: device struct
3548 * @buf: buffer
3549 * @count: buffer size
3550 *
3551 * This function will reset the adapter and wait a reasonable
3552 * amount of time for any errors that the adapter might log.
3553 *
3554 * Return value:
3555 * count on success / other on failure
3556 **/
3557 static ssize_t ipr_store_diagnostics(struct device *dev,
3558 struct device_attribute *attr,
3559 const char *buf, size_t count)
3560 {
3561 struct Scsi_Host *shost = class_to_shost(dev);
3562 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3563 unsigned long lock_flags = 0;
3564 int rc = count;
3565
3566 if (!capable(CAP_SYS_ADMIN))
3567 return -EACCES;
3568
3569 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3570 while (ioa_cfg->in_reset_reload) {
3571 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3572 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3573 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3574 }
3575
3576 ioa_cfg->errors_logged = 0;
3577 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3578
3579 if (ioa_cfg->in_reset_reload) {
3580 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3581 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3582
3583 /* Wait for a second for any errors to be logged */
3584 msleep(1000);
3585 } else {
3586 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3587 return -EIO;
3588 }
3589
3590 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3591 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3592 rc = -EIO;
3593 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3594
3595 return rc;
3596 }
3597
3598 static struct device_attribute ipr_diagnostics_attr = {
3599 .attr = {
3600 .name = "run_diagnostics",
3601 .mode = S_IWUSR,
3602 },
3603 .store = ipr_store_diagnostics
3604 };
3605
3606 /**
3607 * ipr_show_adapter_state - Show the adapter's state
3608 * @class_dev: device struct
3609 * @buf: buffer
3610 *
3611 * Return value:
3612 * number of bytes printed to buffer
3613 **/
3614 static ssize_t ipr_show_adapter_state(struct device *dev,
3615 struct device_attribute *attr, char *buf)
3616 {
3617 struct Scsi_Host *shost = class_to_shost(dev);
3618 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3619 unsigned long lock_flags = 0;
3620 int len;
3621
3622 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3623 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
3624 len = snprintf(buf, PAGE_SIZE, "offline\n");
3625 else
3626 len = snprintf(buf, PAGE_SIZE, "online\n");
3627 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3628 return len;
3629 }
3630
3631 /**
3632 * ipr_store_adapter_state - Change adapter state
3633 * @dev: device struct
3634 * @buf: buffer
3635 * @count: buffer size
3636 *
3637 * This function will change the adapter's state.
3638 *
3639 * Return value:
3640 * count on success / other on failure
3641 **/
3642 static ssize_t ipr_store_adapter_state(struct device *dev,
3643 struct device_attribute *attr,
3644 const char *buf, size_t count)
3645 {
3646 struct Scsi_Host *shost = class_to_shost(dev);
3647 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3648 unsigned long lock_flags;
3649 int result = count, i;
3650
3651 if (!capable(CAP_SYS_ADMIN))
3652 return -EACCES;
3653
3654 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3655 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead &&
3656 !strncmp(buf, "online", 6)) {
3657 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
3658 spin_lock(&ioa_cfg->hrrq[i]._lock);
3659 ioa_cfg->hrrq[i].ioa_is_dead = 0;
3660 spin_unlock(&ioa_cfg->hrrq[i]._lock);
3661 }
3662 wmb();
3663 ioa_cfg->reset_retries = 0;
3664 ioa_cfg->in_ioa_bringdown = 0;
3665 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3666 }
3667 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3668 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3669
3670 return result;
3671 }
3672
3673 static struct device_attribute ipr_ioa_state_attr = {
3674 .attr = {
3675 .name = "online_state",
3676 .mode = S_IRUGO | S_IWUSR,
3677 },
3678 .show = ipr_show_adapter_state,
3679 .store = ipr_store_adapter_state
3680 };
3681
3682 /**
3683 * ipr_store_reset_adapter - Reset the adapter
3684 * @dev: device struct
3685 * @buf: buffer
3686 * @count: buffer size
3687 *
3688 * This function will reset the adapter.
3689 *
3690 * Return value:
3691 * count on success / other on failure
3692 **/
3693 static ssize_t ipr_store_reset_adapter(struct device *dev,
3694 struct device_attribute *attr,
3695 const char *buf, size_t count)
3696 {
3697 struct Scsi_Host *shost = class_to_shost(dev);
3698 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3699 unsigned long lock_flags;
3700 int result = count;
3701
3702 if (!capable(CAP_SYS_ADMIN))
3703 return -EACCES;
3704
3705 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3706 if (!ioa_cfg->in_reset_reload)
3707 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3708 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3709 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3710
3711 return result;
3712 }
3713
3714 static struct device_attribute ipr_ioa_reset_attr = {
3715 .attr = {
3716 .name = "reset_host",
3717 .mode = S_IWUSR,
3718 },
3719 .store = ipr_store_reset_adapter
3720 };
3721
3722 static int ipr_iopoll(struct irq_poll *iop, int budget);
3723 /**
3724 * ipr_show_iopoll_weight - Show ipr polling mode
3725 * @dev: class device struct
3726 * @buf: buffer
3727 *
3728 * Return value:
3729 * number of bytes printed to buffer
3730 **/
3731 static ssize_t ipr_show_iopoll_weight(struct device *dev,
3732 struct device_attribute *attr, char *buf)
3733 {
3734 struct Scsi_Host *shost = class_to_shost(dev);
3735 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3736 unsigned long lock_flags = 0;
3737 int len;
3738
3739 spin_lock_irqsave(shost->host_lock, lock_flags);
3740 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight);
3741 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3742
3743 return len;
3744 }
3745
3746 /**
3747 * ipr_store_iopoll_weight - Change the adapter's polling mode
3748 * @dev: class device struct
3749 * @buf: buffer
3750 *
3751 * Return value:
3752 * number of bytes printed to buffer
3753 **/
3754 static ssize_t ipr_store_iopoll_weight(struct device *dev,
3755 struct device_attribute *attr,
3756 const char *buf, size_t count)
3757 {
3758 struct Scsi_Host *shost = class_to_shost(dev);
3759 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3760 unsigned long user_iopoll_weight;
3761 unsigned long lock_flags = 0;
3762 int i;
3763
3764 if (!ioa_cfg->sis64) {
3765 dev_info(&ioa_cfg->pdev->dev, "irq_poll not supported on this adapter\n");
3766 return -EINVAL;
3767 }
3768 if (kstrtoul(buf, 10, &user_iopoll_weight))
3769 return -EINVAL;
3770
3771 if (user_iopoll_weight > 256) {
3772 dev_info(&ioa_cfg->pdev->dev, "Invalid irq_poll weight. It must be less than 256\n");
3773 return -EINVAL;
3774 }
3775
3776 if (user_iopoll_weight == ioa_cfg->iopoll_weight) {
3777 dev_info(&ioa_cfg->pdev->dev, "Current irq_poll weight has the same weight\n");
3778 return strlen(buf);
3779 }
3780
3781 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3782 for (i = 1; i < ioa_cfg->hrrq_num; i++)
3783 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
3784 }
3785
3786 spin_lock_irqsave(shost->host_lock, lock_flags);
3787 ioa_cfg->iopoll_weight = user_iopoll_weight;
3788 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3789 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
3790 irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
3791 ioa_cfg->iopoll_weight, ipr_iopoll);
3792 }
3793 }
3794 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3795
3796 return strlen(buf);
3797 }
3798
3799 static struct device_attribute ipr_iopoll_weight_attr = {
3800 .attr = {
3801 .name = "iopoll_weight",
3802 .mode = S_IRUGO | S_IWUSR,
3803 },
3804 .show = ipr_show_iopoll_weight,
3805 .store = ipr_store_iopoll_weight
3806 };
3807
3808 /**
3809 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3810 * @buf_len: buffer length
3811 *
3812 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3813 * list to use for microcode download
3814 *
3815 * Return value:
3816 * pointer to sglist / NULL on failure
3817 **/
3818 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3819 {
3820 int sg_size, order;
3821 struct ipr_sglist *sglist;
3822
3823 /* Get the minimum size per scatter/gather element */
3824 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3825
3826 /* Get the actual size per element */
3827 order = get_order(sg_size);
3828
3829 /* Allocate a scatter/gather list for the DMA */
3830 sglist = kzalloc(sizeof(struct ipr_sglist), GFP_KERNEL);
3831 if (sglist == NULL) {
3832 ipr_trace;
3833 return NULL;
3834 }
3835 sglist->order = order;
3836 sglist->scatterlist = sgl_alloc_order(buf_len, order, false, GFP_KERNEL,
3837 &sglist->num_sg);
3838 if (!sglist->scatterlist) {
3839 kfree(sglist);
3840 return NULL;
3841 }
3842
3843 return sglist;
3844 }
3845
3846 /**
3847 * ipr_free_ucode_buffer - Frees a microcode download buffer
3848 * @p_dnld: scatter/gather list pointer
3849 *
3850 * Free a DMA'able ucode download buffer previously allocated with
3851 * ipr_alloc_ucode_buffer
3852 *
3853 * Return value:
3854 * nothing
3855 **/
3856 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3857 {
3858 sgl_free_order(sglist->scatterlist, sglist->order);
3859 kfree(sglist);
3860 }
3861
3862 /**
3863 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3864 * @sglist: scatter/gather list pointer
3865 * @buffer: buffer pointer
3866 * @len: buffer length
3867 *
3868 * Copy a microcode image from a user buffer into a buffer allocated by
3869 * ipr_alloc_ucode_buffer
3870 *
3871 * Return value:
3872 * 0 on success / other on failure
3873 **/
3874 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3875 u8 *buffer, u32 len)
3876 {
3877 int bsize_elem, i, result = 0;
3878 struct scatterlist *scatterlist;
3879 void *kaddr;
3880
3881 /* Determine the actual number of bytes per element */
3882 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3883
3884 scatterlist = sglist->scatterlist;
3885
3886 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3887 struct page *page = sg_page(&scatterlist[i]);
3888
3889 kaddr = kmap(page);
3890 memcpy(kaddr, buffer, bsize_elem);
3891 kunmap(page);
3892
3893 scatterlist[i].length = bsize_elem;
3894
3895 if (result != 0) {
3896 ipr_trace;
3897 return result;
3898 }
3899 }
3900
3901 if (len % bsize_elem) {
3902 struct page *page = sg_page(&scatterlist[i]);
3903
3904 kaddr = kmap(page);
3905 memcpy(kaddr, buffer, len % bsize_elem);
3906 kunmap(page);
3907
3908 scatterlist[i].length = len % bsize_elem;
3909 }
3910
3911 sglist->buffer_len = len;
3912 return result;
3913 }
3914
3915 /**
3916 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3917 * @ipr_cmd: ipr command struct
3918 * @sglist: scatter/gather list
3919 *
3920 * Builds a microcode download IOA data list (IOADL).
3921 *
3922 **/
3923 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3924 struct ipr_sglist *sglist)
3925 {
3926 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3927 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3928 struct scatterlist *scatterlist = sglist->scatterlist;
3929 int i;
3930
3931 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3932 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3933 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3934
3935 ioarcb->ioadl_len =
3936 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3937 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3938 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3939 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3940 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3941 }
3942
3943 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3944 }
3945
3946 /**
3947 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3948 * @ipr_cmd: ipr command struct
3949 * @sglist: scatter/gather list
3950 *
3951 * Builds a microcode download IOA data list (IOADL).
3952 *
3953 **/
3954 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3955 struct ipr_sglist *sglist)
3956 {
3957 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3958 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3959 struct scatterlist *scatterlist = sglist->scatterlist;
3960 int i;
3961
3962 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3963 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3964 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3965
3966 ioarcb->ioadl_len =
3967 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3968
3969 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3970 ioadl[i].flags_and_data_len =
3971 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3972 ioadl[i].address =
3973 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3974 }
3975
3976 ioadl[i-1].flags_and_data_len |=
3977 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3978 }
3979
3980 /**
3981 * ipr_update_ioa_ucode - Update IOA's microcode
3982 * @ioa_cfg: ioa config struct
3983 * @sglist: scatter/gather list
3984 *
3985 * Initiate an adapter reset to update the IOA's microcode
3986 *
3987 * Return value:
3988 * 0 on success / -EIO on failure
3989 **/
3990 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3991 struct ipr_sglist *sglist)
3992 {
3993 unsigned long lock_flags;
3994
3995 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3996 while (ioa_cfg->in_reset_reload) {
3997 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3998 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3999 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4000 }
4001
4002 if (ioa_cfg->ucode_sglist) {
4003 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4004 dev_err(&ioa_cfg->pdev->dev,
4005 "Microcode download already in progress\n");
4006 return -EIO;
4007 }
4008
4009 sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev,
4010 sglist->scatterlist, sglist->num_sg,
4011 DMA_TO_DEVICE);
4012
4013 if (!sglist->num_dma_sg) {
4014 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4015 dev_err(&ioa_cfg->pdev->dev,
4016 "Failed to map microcode download buffer!\n");
4017 return -EIO;
4018 }
4019
4020 ioa_cfg->ucode_sglist = sglist;
4021 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
4022 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4023 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4024
4025 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4026 ioa_cfg->ucode_sglist = NULL;
4027 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4028 return 0;
4029 }
4030
4031 /**
4032 * ipr_store_update_fw - Update the firmware on the adapter
4033 * @class_dev: device struct
4034 * @buf: buffer
4035 * @count: buffer size
4036 *
4037 * This function will update the firmware on the adapter.
4038 *
4039 * Return value:
4040 * count on success / other on failure
4041 **/
4042 static ssize_t ipr_store_update_fw(struct device *dev,
4043 struct device_attribute *attr,
4044 const char *buf, size_t count)
4045 {
4046 struct Scsi_Host *shost = class_to_shost(dev);
4047 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4048 struct ipr_ucode_image_header *image_hdr;
4049 const struct firmware *fw_entry;
4050 struct ipr_sglist *sglist;
4051 char fname[100];
4052 char *src;
4053 char *endline;
4054 int result, dnld_size;
4055
4056 if (!capable(CAP_SYS_ADMIN))
4057 return -EACCES;
4058
4059 snprintf(fname, sizeof(fname), "%s", buf);
4060
4061 endline = strchr(fname, '\n');
4062 if (endline)
4063 *endline = '\0';
4064
4065 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
4066 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
4067 return -EIO;
4068 }
4069
4070 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
4071
4072 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
4073 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
4074 sglist = ipr_alloc_ucode_buffer(dnld_size);
4075
4076 if (!sglist) {
4077 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
4078 release_firmware(fw_entry);
4079 return -ENOMEM;
4080 }
4081
4082 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
4083
4084 if (result) {
4085 dev_err(&ioa_cfg->pdev->dev,
4086 "Microcode buffer copy to DMA buffer failed\n");
4087 goto out;
4088 }
4089
4090 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n");
4091
4092 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
4093
4094 if (!result)
4095 result = count;
4096 out:
4097 ipr_free_ucode_buffer(sglist);
4098 release_firmware(fw_entry);
4099 return result;
4100 }
4101
4102 static struct device_attribute ipr_update_fw_attr = {
4103 .attr = {
4104 .name = "update_fw",
4105 .mode = S_IWUSR,
4106 },
4107 .store = ipr_store_update_fw
4108 };
4109
4110 /**
4111 * ipr_show_fw_type - Show the adapter's firmware type.
4112 * @dev: class device struct
4113 * @buf: buffer
4114 *
4115 * Return value:
4116 * number of bytes printed to buffer
4117 **/
4118 static ssize_t ipr_show_fw_type(struct device *dev,
4119 struct device_attribute *attr, char *buf)
4120 {
4121 struct Scsi_Host *shost = class_to_shost(dev);
4122 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4123 unsigned long lock_flags = 0;
4124 int len;
4125
4126 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4127 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
4128 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4129 return len;
4130 }
4131
4132 static struct device_attribute ipr_ioa_fw_type_attr = {
4133 .attr = {
4134 .name = "fw_type",
4135 .mode = S_IRUGO,
4136 },
4137 .show = ipr_show_fw_type
4138 };
4139
4140 static ssize_t ipr_read_async_err_log(struct file *filep, struct kobject *kobj,
4141 struct bin_attribute *bin_attr, char *buf,
4142 loff_t off, size_t count)
4143 {
4144 struct device *cdev = container_of(kobj, struct device, kobj);
4145 struct Scsi_Host *shost = class_to_shost(cdev);
4146 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4147 struct ipr_hostrcb *hostrcb;
4148 unsigned long lock_flags = 0;
4149 int ret;
4150
4151 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4152 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q,
4153 struct ipr_hostrcb, queue);
4154 if (!hostrcb) {
4155 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4156 return 0;
4157 }
4158 ret = memory_read_from_buffer(buf, count, &off, &hostrcb->hcam,
4159 sizeof(hostrcb->hcam));
4160 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4161 return ret;
4162 }
4163
4164 static ssize_t ipr_next_async_err_log(struct file *filep, struct kobject *kobj,
4165 struct bin_attribute *bin_attr, char *buf,
4166 loff_t off, size_t count)
4167 {
4168 struct device *cdev = container_of(kobj, struct device, kobj);
4169 struct Scsi_Host *shost = class_to_shost(cdev);
4170 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4171 struct ipr_hostrcb *hostrcb;
4172 unsigned long lock_flags = 0;
4173
4174 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4175 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q,
4176 struct ipr_hostrcb, queue);
4177 if (!hostrcb) {
4178 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4179 return count;
4180 }
4181
4182 /* Reclaim hostrcb before exit */
4183 list_move_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
4184 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4185 return count;
4186 }
4187
4188 static struct bin_attribute ipr_ioa_async_err_log = {
4189 .attr = {
4190 .name = "async_err_log",
4191 .mode = S_IRUGO | S_IWUSR,
4192 },
4193 .size = 0,
4194 .read = ipr_read_async_err_log,
4195 .write = ipr_next_async_err_log
4196 };
4197
4198 static struct device_attribute *ipr_ioa_attrs[] = {
4199 &ipr_fw_version_attr,
4200 &ipr_log_level_attr,
4201 &ipr_diagnostics_attr,
4202 &ipr_ioa_state_attr,
4203 &ipr_ioa_reset_attr,
4204 &ipr_update_fw_attr,
4205 &ipr_ioa_fw_type_attr,
4206 &ipr_iopoll_weight_attr,
4207 NULL,
4208 };
4209
4210 #ifdef CONFIG_SCSI_IPR_DUMP
4211 /**
4212 * ipr_read_dump - Dump the adapter
4213 * @filp: open sysfs file
4214 * @kobj: kobject struct
4215 * @bin_attr: bin_attribute struct
4216 * @buf: buffer
4217 * @off: offset
4218 * @count: buffer size
4219 *
4220 * Return value:
4221 * number of bytes printed to buffer
4222 **/
4223 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
4224 struct bin_attribute *bin_attr,
4225 char *buf, loff_t off, size_t count)
4226 {
4227 struct device *cdev = container_of(kobj, struct device, kobj);
4228 struct Scsi_Host *shost = class_to_shost(cdev);
4229 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4230 struct ipr_dump *dump;
4231 unsigned long lock_flags = 0;
4232 char *src;
4233 int len, sdt_end;
4234 size_t rc = count;
4235
4236 if (!capable(CAP_SYS_ADMIN))
4237 return -EACCES;
4238
4239 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4240 dump = ioa_cfg->dump;
4241
4242 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
4243 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4244 return 0;
4245 }
4246 kref_get(&dump->kref);
4247 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4248
4249 if (off > dump->driver_dump.hdr.len) {
4250 kref_put(&dump->kref, ipr_release_dump);
4251 return 0;
4252 }
4253
4254 if (off + count > dump->driver_dump.hdr.len) {
4255 count = dump->driver_dump.hdr.len - off;
4256 rc = count;
4257 }
4258
4259 if (count && off < sizeof(dump->driver_dump)) {
4260 if (off + count > sizeof(dump->driver_dump))
4261 len = sizeof(dump->driver_dump) - off;
4262 else
4263 len = count;
4264 src = (u8 *)&dump->driver_dump + off;
4265 memcpy(buf, src, len);
4266 buf += len;
4267 off += len;
4268 count -= len;
4269 }
4270
4271 off -= sizeof(dump->driver_dump);
4272
4273 if (ioa_cfg->sis64)
4274 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4275 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
4276 sizeof(struct ipr_sdt_entry));
4277 else
4278 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4279 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
4280
4281 if (count && off < sdt_end) {
4282 if (off + count > sdt_end)
4283 len = sdt_end - off;
4284 else
4285 len = count;
4286 src = (u8 *)&dump->ioa_dump + off;
4287 memcpy(buf, src, len);
4288 buf += len;
4289 off += len;
4290 count -= len;
4291 }
4292
4293 off -= sdt_end;
4294
4295 while (count) {
4296 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
4297 len = PAGE_ALIGN(off) - off;
4298 else
4299 len = count;
4300 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
4301 src += off & ~PAGE_MASK;
4302 memcpy(buf, src, len);
4303 buf += len;
4304 off += len;
4305 count -= len;
4306 }
4307
4308 kref_put(&dump->kref, ipr_release_dump);
4309 return rc;
4310 }
4311
4312 /**
4313 * ipr_alloc_dump - Prepare for adapter dump
4314 * @ioa_cfg: ioa config struct
4315 *
4316 * Return value:
4317 * 0 on success / other on failure
4318 **/
4319 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
4320 {
4321 struct ipr_dump *dump;
4322 __be32 **ioa_data;
4323 unsigned long lock_flags = 0;
4324
4325 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
4326
4327 if (!dump) {
4328 ipr_err("Dump memory allocation failed\n");
4329 return -ENOMEM;
4330 }
4331
4332 if (ioa_cfg->sis64)
4333 ioa_data = vmalloc(array_size(IPR_FMT3_MAX_NUM_DUMP_PAGES,
4334 sizeof(__be32 *)));
4335 else
4336 ioa_data = vmalloc(array_size(IPR_FMT2_MAX_NUM_DUMP_PAGES,
4337 sizeof(__be32 *)));
4338
4339 if (!ioa_data) {
4340 ipr_err("Dump memory allocation failed\n");
4341 kfree(dump);
4342 return -ENOMEM;
4343 }
4344
4345 dump->ioa_dump.ioa_data = ioa_data;
4346
4347 kref_init(&dump->kref);
4348 dump->ioa_cfg = ioa_cfg;
4349
4350 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4351
4352 if (INACTIVE != ioa_cfg->sdt_state) {
4353 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4354 vfree(dump->ioa_dump.ioa_data);
4355 kfree(dump);
4356 return 0;
4357 }
4358
4359 ioa_cfg->dump = dump;
4360 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
4361 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) {
4362 ioa_cfg->dump_taken = 1;
4363 schedule_work(&ioa_cfg->work_q);
4364 }
4365 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4366
4367 return 0;
4368 }
4369
4370 /**
4371 * ipr_free_dump - Free adapter dump memory
4372 * @ioa_cfg: ioa config struct
4373 *
4374 * Return value:
4375 * 0 on success / other on failure
4376 **/
4377 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
4378 {
4379 struct ipr_dump *dump;
4380 unsigned long lock_flags = 0;
4381
4382 ENTER;
4383
4384 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4385 dump = ioa_cfg->dump;
4386 if (!dump) {
4387 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4388 return 0;
4389 }
4390
4391 ioa_cfg->dump = NULL;
4392 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4393
4394 kref_put(&dump->kref, ipr_release_dump);
4395
4396 LEAVE;
4397 return 0;
4398 }
4399
4400 /**
4401 * ipr_write_dump - Setup dump state of adapter
4402 * @filp: open sysfs file
4403 * @kobj: kobject struct
4404 * @bin_attr: bin_attribute struct
4405 * @buf: buffer
4406 * @off: offset
4407 * @count: buffer size
4408 *
4409 * Return value:
4410 * number of bytes printed to buffer
4411 **/
4412 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4413 struct bin_attribute *bin_attr,
4414 char *buf, loff_t off, size_t count)
4415 {
4416 struct device *cdev = container_of(kobj, struct device, kobj);
4417 struct Scsi_Host *shost = class_to_shost(cdev);
4418 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4419 int rc;
4420
4421 if (!capable(CAP_SYS_ADMIN))
4422 return -EACCES;
4423
4424 if (buf[0] == '1')
4425 rc = ipr_alloc_dump(ioa_cfg);
4426 else if (buf[0] == '0')
4427 rc = ipr_free_dump(ioa_cfg);
4428 else
4429 return -EINVAL;
4430
4431 if (rc)
4432 return rc;
4433 else
4434 return count;
4435 }
4436
4437 static struct bin_attribute ipr_dump_attr = {
4438 .attr = {
4439 .name = "dump",
4440 .mode = S_IRUSR | S_IWUSR,
4441 },
4442 .size = 0,
4443 .read = ipr_read_dump,
4444 .write = ipr_write_dump
4445 };
4446 #else
4447 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4448 #endif
4449
4450 /**
4451 * ipr_change_queue_depth - Change the device's queue depth
4452 * @sdev: scsi device struct
4453 * @qdepth: depth to set
4454 * @reason: calling context
4455 *
4456 * Return value:
4457 * actual depth set
4458 **/
4459 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
4460 {
4461 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4462 struct ipr_resource_entry *res;
4463 unsigned long lock_flags = 0;
4464
4465 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4466 res = (struct ipr_resource_entry *)sdev->hostdata;
4467
4468 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4469 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4470 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4471
4472 scsi_change_queue_depth(sdev, qdepth);
4473 return sdev->queue_depth;
4474 }
4475
4476 /**
4477 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4478 * @dev: device struct
4479 * @attr: device attribute structure
4480 * @buf: buffer
4481 *
4482 * Return value:
4483 * number of bytes printed to buffer
4484 **/
4485 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4486 {
4487 struct scsi_device *sdev = to_scsi_device(dev);
4488 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4489 struct ipr_resource_entry *res;
4490 unsigned long lock_flags = 0;
4491 ssize_t len = -ENXIO;
4492
4493 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4494 res = (struct ipr_resource_entry *)sdev->hostdata;
4495 if (res)
4496 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4497 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4498 return len;
4499 }
4500
4501 static struct device_attribute ipr_adapter_handle_attr = {
4502 .attr = {
4503 .name = "adapter_handle",
4504 .mode = S_IRUSR,
4505 },
4506 .show = ipr_show_adapter_handle
4507 };
4508
4509 /**
4510 * ipr_show_resource_path - Show the resource path or the resource address for
4511 * this device.
4512 * @dev: device struct
4513 * @attr: device attribute structure
4514 * @buf: buffer
4515 *
4516 * Return value:
4517 * number of bytes printed to buffer
4518 **/
4519 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4520 {
4521 struct scsi_device *sdev = to_scsi_device(dev);
4522 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4523 struct ipr_resource_entry *res;
4524 unsigned long lock_flags = 0;
4525 ssize_t len = -ENXIO;
4526 char buffer[IPR_MAX_RES_PATH_LENGTH];
4527
4528 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4529 res = (struct ipr_resource_entry *)sdev->hostdata;
4530 if (res && ioa_cfg->sis64)
4531 len = snprintf(buf, PAGE_SIZE, "%s\n",
4532 __ipr_format_res_path(res->res_path, buffer,
4533 sizeof(buffer)));
4534 else if (res)
4535 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4536 res->bus, res->target, res->lun);
4537
4538 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4539 return len;
4540 }
4541
4542 static struct device_attribute ipr_resource_path_attr = {
4543 .attr = {
4544 .name = "resource_path",
4545 .mode = S_IRUGO,
4546 },
4547 .show = ipr_show_resource_path
4548 };
4549
4550 /**
4551 * ipr_show_device_id - Show the device_id for this device.
4552 * @dev: device struct
4553 * @attr: device attribute structure
4554 * @buf: buffer
4555 *
4556 * Return value:
4557 * number of bytes printed to buffer
4558 **/
4559 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4560 {
4561 struct scsi_device *sdev = to_scsi_device(dev);
4562 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4563 struct ipr_resource_entry *res;
4564 unsigned long lock_flags = 0;
4565 ssize_t len = -ENXIO;
4566
4567 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4568 res = (struct ipr_resource_entry *)sdev->hostdata;
4569 if (res && ioa_cfg->sis64)
4570 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id));
4571 else if (res)
4572 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4573
4574 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4575 return len;
4576 }
4577
4578 static struct device_attribute ipr_device_id_attr = {
4579 .attr = {
4580 .name = "device_id",
4581 .mode = S_IRUGO,
4582 },
4583 .show = ipr_show_device_id
4584 };
4585
4586 /**
4587 * ipr_show_resource_type - Show the resource type for this device.
4588 * @dev: device struct
4589 * @attr: device attribute structure
4590 * @buf: buffer
4591 *
4592 * Return value:
4593 * number of bytes printed to buffer
4594 **/
4595 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4596 {
4597 struct scsi_device *sdev = to_scsi_device(dev);
4598 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4599 struct ipr_resource_entry *res;
4600 unsigned long lock_flags = 0;
4601 ssize_t len = -ENXIO;
4602
4603 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4604 res = (struct ipr_resource_entry *)sdev->hostdata;
4605
4606 if (res)
4607 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4608
4609 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4610 return len;
4611 }
4612
4613 static struct device_attribute ipr_resource_type_attr = {
4614 .attr = {
4615 .name = "resource_type",
4616 .mode = S_IRUGO,
4617 },
4618 .show = ipr_show_resource_type
4619 };
4620
4621 /**
4622 * ipr_show_raw_mode - Show the adapter's raw mode
4623 * @dev: class device struct
4624 * @buf: buffer
4625 *
4626 * Return value:
4627 * number of bytes printed to buffer
4628 **/
4629 static ssize_t ipr_show_raw_mode(struct device *dev,
4630 struct device_attribute *attr, char *buf)
4631 {
4632 struct scsi_device *sdev = to_scsi_device(dev);
4633 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4634 struct ipr_resource_entry *res;
4635 unsigned long lock_flags = 0;
4636 ssize_t len;
4637
4638 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4639 res = (struct ipr_resource_entry *)sdev->hostdata;
4640 if (res)
4641 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode);
4642 else
4643 len = -ENXIO;
4644 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4645 return len;
4646 }
4647
4648 /**
4649 * ipr_store_raw_mode - Change the adapter's raw mode
4650 * @dev: class device struct
4651 * @buf: buffer
4652 *
4653 * Return value:
4654 * number of bytes printed to buffer
4655 **/
4656 static ssize_t ipr_store_raw_mode(struct device *dev,
4657 struct device_attribute *attr,
4658 const char *buf, size_t count)
4659 {
4660 struct scsi_device *sdev = to_scsi_device(dev);
4661 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4662 struct ipr_resource_entry *res;
4663 unsigned long lock_flags = 0;
4664 ssize_t len;
4665
4666 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4667 res = (struct ipr_resource_entry *)sdev->hostdata;
4668 if (res) {
4669 if (ipr_is_af_dasd_device(res)) {
4670 res->raw_mode = simple_strtoul(buf, NULL, 10);
4671 len = strlen(buf);
4672 if (res->sdev)
4673 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n",
4674 res->raw_mode ? "enabled" : "disabled");
4675 } else
4676 len = -EINVAL;
4677 } else
4678 len = -ENXIO;
4679 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4680 return len;
4681 }
4682
4683 static struct device_attribute ipr_raw_mode_attr = {
4684 .attr = {
4685 .name = "raw_mode",
4686 .mode = S_IRUGO | S_IWUSR,
4687 },
4688 .show = ipr_show_raw_mode,
4689 .store = ipr_store_raw_mode
4690 };
4691
4692 static struct device_attribute *ipr_dev_attrs[] = {
4693 &ipr_adapter_handle_attr,
4694 &ipr_resource_path_attr,
4695 &ipr_device_id_attr,
4696 &ipr_resource_type_attr,
4697 &ipr_raw_mode_attr,
4698 NULL,
4699 };
4700
4701 /**
4702 * ipr_biosparam - Return the HSC mapping
4703 * @sdev: scsi device struct
4704 * @block_device: block device pointer
4705 * @capacity: capacity of the device
4706 * @parm: Array containing returned HSC values.
4707 *
4708 * This function generates the HSC parms that fdisk uses.
4709 * We want to make sure we return something that places partitions
4710 * on 4k boundaries for best performance with the IOA.
4711 *
4712 * Return value:
4713 * 0 on success
4714 **/
4715 static int ipr_biosparam(struct scsi_device *sdev,
4716 struct block_device *block_device,
4717 sector_t capacity, int *parm)
4718 {
4719 int heads, sectors;
4720 sector_t cylinders;
4721
4722 heads = 128;
4723 sectors = 32;
4724
4725 cylinders = capacity;
4726 sector_div(cylinders, (128 * 32));
4727
4728 /* return result */
4729 parm[0] = heads;
4730 parm[1] = sectors;
4731 parm[2] = cylinders;
4732
4733 return 0;
4734 }
4735
4736 /**
4737 * ipr_find_starget - Find target based on bus/target.
4738 * @starget: scsi target struct
4739 *
4740 * Return value:
4741 * resource entry pointer if found / NULL if not found
4742 **/
4743 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4744 {
4745 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4746 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4747 struct ipr_resource_entry *res;
4748
4749 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4750 if ((res->bus == starget->channel) &&
4751 (res->target == starget->id)) {
4752 return res;
4753 }
4754 }
4755
4756 return NULL;
4757 }
4758
4759 static struct ata_port_info sata_port_info;
4760
4761 /**
4762 * ipr_target_alloc - Prepare for commands to a SCSI target
4763 * @starget: scsi target struct
4764 *
4765 * If the device is a SATA device, this function allocates an
4766 * ATA port with libata, else it does nothing.
4767 *
4768 * Return value:
4769 * 0 on success / non-0 on failure
4770 **/
4771 static int ipr_target_alloc(struct scsi_target *starget)
4772 {
4773 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4774 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4775 struct ipr_sata_port *sata_port;
4776 struct ata_port *ap;
4777 struct ipr_resource_entry *res;
4778 unsigned long lock_flags;
4779
4780 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4781 res = ipr_find_starget(starget);
4782 starget->hostdata = NULL;
4783
4784 if (res && ipr_is_gata(res)) {
4785 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4786 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4787 if (!sata_port)
4788 return -ENOMEM;
4789
4790 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4791 if (ap) {
4792 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4793 sata_port->ioa_cfg = ioa_cfg;
4794 sata_port->ap = ap;
4795 sata_port->res = res;
4796
4797 res->sata_port = sata_port;
4798 ap->private_data = sata_port;
4799 starget->hostdata = sata_port;
4800 } else {
4801 kfree(sata_port);
4802 return -ENOMEM;
4803 }
4804 }
4805 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4806
4807 return 0;
4808 }
4809
4810 /**
4811 * ipr_target_destroy - Destroy a SCSI target
4812 * @starget: scsi target struct
4813 *
4814 * If the device was a SATA device, this function frees the libata
4815 * ATA port, else it does nothing.
4816 *
4817 **/
4818 static void ipr_target_destroy(struct scsi_target *starget)
4819 {
4820 struct ipr_sata_port *sata_port = starget->hostdata;
4821 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4822 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4823
4824 if (ioa_cfg->sis64) {
4825 if (!ipr_find_starget(starget)) {
4826 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4827 clear_bit(starget->id, ioa_cfg->array_ids);
4828 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4829 clear_bit(starget->id, ioa_cfg->vset_ids);
4830 else if (starget->channel == 0)
4831 clear_bit(starget->id, ioa_cfg->target_ids);
4832 }
4833 }
4834
4835 if (sata_port) {
4836 starget->hostdata = NULL;
4837 ata_sas_port_destroy(sata_port->ap);
4838 kfree(sata_port);
4839 }
4840 }
4841
4842 /**
4843 * ipr_find_sdev - Find device based on bus/target/lun.
4844 * @sdev: scsi device struct
4845 *
4846 * Return value:
4847 * resource entry pointer if found / NULL if not found
4848 **/
4849 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4850 {
4851 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4852 struct ipr_resource_entry *res;
4853
4854 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4855 if ((res->bus == sdev->channel) &&
4856 (res->target == sdev->id) &&
4857 (res->lun == sdev->lun))
4858 return res;
4859 }
4860
4861 return NULL;
4862 }
4863
4864 /**
4865 * ipr_slave_destroy - Unconfigure a SCSI device
4866 * @sdev: scsi device struct
4867 *
4868 * Return value:
4869 * nothing
4870 **/
4871 static void ipr_slave_destroy(struct scsi_device *sdev)
4872 {
4873 struct ipr_resource_entry *res;
4874 struct ipr_ioa_cfg *ioa_cfg;
4875 unsigned long lock_flags = 0;
4876
4877 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4878
4879 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4880 res = (struct ipr_resource_entry *) sdev->hostdata;
4881 if (res) {
4882 if (res->sata_port)
4883 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4884 sdev->hostdata = NULL;
4885 res->sdev = NULL;
4886 res->sata_port = NULL;
4887 }
4888 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4889 }
4890
4891 /**
4892 * ipr_slave_configure - Configure a SCSI device
4893 * @sdev: scsi device struct
4894 *
4895 * This function configures the specified scsi device.
4896 *
4897 * Return value:
4898 * 0 on success
4899 **/
4900 static int ipr_slave_configure(struct scsi_device *sdev)
4901 {
4902 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4903 struct ipr_resource_entry *res;
4904 struct ata_port *ap = NULL;
4905 unsigned long lock_flags = 0;
4906 char buffer[IPR_MAX_RES_PATH_LENGTH];
4907
4908 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4909 res = sdev->hostdata;
4910 if (res) {
4911 if (ipr_is_af_dasd_device(res))
4912 sdev->type = TYPE_RAID;
4913 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4914 sdev->scsi_level = 4;
4915 sdev->no_uld_attach = 1;
4916 }
4917 if (ipr_is_vset_device(res)) {
4918 sdev->scsi_level = SCSI_SPC_3;
4919 sdev->no_report_opcodes = 1;
4920 blk_queue_rq_timeout(sdev->request_queue,
4921 IPR_VSET_RW_TIMEOUT);
4922 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4923 }
4924 if (ipr_is_gata(res) && res->sata_port)
4925 ap = res->sata_port->ap;
4926 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4927
4928 if (ap) {
4929 scsi_change_queue_depth(sdev, IPR_MAX_CMD_PER_ATA_LUN);
4930 ata_sas_slave_configure(sdev, ap);
4931 }
4932
4933 if (ioa_cfg->sis64)
4934 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4935 ipr_format_res_path(ioa_cfg,
4936 res->res_path, buffer, sizeof(buffer)));
4937 return 0;
4938 }
4939 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4940 return 0;
4941 }
4942
4943 /**
4944 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4945 * @sdev: scsi device struct
4946 *
4947 * This function initializes an ATA port so that future commands
4948 * sent through queuecommand will work.
4949 *
4950 * Return value:
4951 * 0 on success
4952 **/
4953 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4954 {
4955 struct ipr_sata_port *sata_port = NULL;
4956 int rc = -ENXIO;
4957
4958 ENTER;
4959 if (sdev->sdev_target)
4960 sata_port = sdev->sdev_target->hostdata;
4961 if (sata_port) {
4962 rc = ata_sas_port_init(sata_port->ap);
4963 if (rc == 0)
4964 rc = ata_sas_sync_probe(sata_port->ap);
4965 }
4966
4967 if (rc)
4968 ipr_slave_destroy(sdev);
4969
4970 LEAVE;
4971 return rc;
4972 }
4973
4974 /**
4975 * ipr_slave_alloc - Prepare for commands to a device.
4976 * @sdev: scsi device struct
4977 *
4978 * This function saves a pointer to the resource entry
4979 * in the scsi device struct if the device exists. We
4980 * can then use this pointer in ipr_queuecommand when
4981 * handling new commands.
4982 *
4983 * Return value:
4984 * 0 on success / -ENXIO if device does not exist
4985 **/
4986 static int ipr_slave_alloc(struct scsi_device *sdev)
4987 {
4988 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4989 struct ipr_resource_entry *res;
4990 unsigned long lock_flags;
4991 int rc = -ENXIO;
4992
4993 sdev->hostdata = NULL;
4994
4995 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4996
4997 res = ipr_find_sdev(sdev);
4998 if (res) {
4999 res->sdev = sdev;
5000 res->add_to_ml = 0;
5001 res->in_erp = 0;
5002 sdev->hostdata = res;
5003 if (!ipr_is_naca_model(res))
5004 res->needs_sync_complete = 1;
5005 rc = 0;
5006 if (ipr_is_gata(res)) {
5007 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5008 return ipr_ata_slave_alloc(sdev);
5009 }
5010 }
5011
5012 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5013
5014 return rc;
5015 }
5016
5017 /**
5018 * ipr_match_lun - Match function for specified LUN
5019 * @ipr_cmd: ipr command struct
5020 * @device: device to match (sdev)
5021 *
5022 * Returns:
5023 * 1 if command matches sdev / 0 if command does not match sdev
5024 **/
5025 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device)
5026 {
5027 if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device)
5028 return 1;
5029 return 0;
5030 }
5031
5032 /**
5033 * ipr_cmnd_is_free - Check if a command is free or not
5034 * @ipr_cmd ipr command struct
5035 *
5036 * Returns:
5037 * true / false
5038 **/
5039 static bool ipr_cmnd_is_free(struct ipr_cmnd *ipr_cmd)
5040 {
5041 struct ipr_cmnd *loop_cmd;
5042
5043 list_for_each_entry(loop_cmd, &ipr_cmd->hrrq->hrrq_free_q, queue) {
5044 if (loop_cmd == ipr_cmd)
5045 return true;
5046 }
5047
5048 return false;
5049 }
5050
5051 /**
5052 * ipr_match_res - Match function for specified resource entry
5053 * @ipr_cmd: ipr command struct
5054 * @resource: resource entry to match
5055 *
5056 * Returns:
5057 * 1 if command matches sdev / 0 if command does not match sdev
5058 **/
5059 static int ipr_match_res(struct ipr_cmnd *ipr_cmd, void *resource)
5060 {
5061 struct ipr_resource_entry *res = resource;
5062
5063 if (res && ipr_cmd->ioarcb.res_handle == res->res_handle)
5064 return 1;
5065 return 0;
5066 }
5067
5068 /**
5069 * ipr_wait_for_ops - Wait for matching commands to complete
5070 * @ipr_cmd: ipr command struct
5071 * @device: device to match (sdev)
5072 * @match: match function to use
5073 *
5074 * Returns:
5075 * SUCCESS / FAILED
5076 **/
5077 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device,
5078 int (*match)(struct ipr_cmnd *, void *))
5079 {
5080 struct ipr_cmnd *ipr_cmd;
5081 int wait, i;
5082 unsigned long flags;
5083 struct ipr_hrr_queue *hrrq;
5084 signed long timeout = IPR_ABORT_TASK_TIMEOUT;
5085 DECLARE_COMPLETION_ONSTACK(comp);
5086
5087 ENTER;
5088 do {
5089 wait = 0;
5090
5091 for_each_hrrq(hrrq, ioa_cfg) {
5092 spin_lock_irqsave(hrrq->lock, flags);
5093 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
5094 ipr_cmd = ioa_cfg->ipr_cmnd_list[i];
5095 if (!ipr_cmnd_is_free(ipr_cmd)) {
5096 if (match(ipr_cmd, device)) {
5097 ipr_cmd->eh_comp = &comp;
5098 wait++;
5099 }
5100 }
5101 }
5102 spin_unlock_irqrestore(hrrq->lock, flags);
5103 }
5104
5105 if (wait) {
5106 timeout = wait_for_completion_timeout(&comp, timeout);
5107
5108 if (!timeout) {
5109 wait = 0;
5110
5111 for_each_hrrq(hrrq, ioa_cfg) {
5112 spin_lock_irqsave(hrrq->lock, flags);
5113 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
5114 ipr_cmd = ioa_cfg->ipr_cmnd_list[i];
5115 if (!ipr_cmnd_is_free(ipr_cmd)) {
5116 if (match(ipr_cmd, device)) {
5117 ipr_cmd->eh_comp = NULL;
5118 wait++;
5119 }
5120 }
5121 }
5122 spin_unlock_irqrestore(hrrq->lock, flags);
5123 }
5124
5125 if (wait)
5126 dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n");
5127 LEAVE;
5128 return wait ? FAILED : SUCCESS;
5129 }
5130 }
5131 } while (wait);
5132
5133 LEAVE;
5134 return SUCCESS;
5135 }
5136
5137 static int ipr_eh_host_reset(struct scsi_cmnd *cmd)
5138 {
5139 struct ipr_ioa_cfg *ioa_cfg;
5140 unsigned long lock_flags = 0;
5141 int rc = SUCCESS;
5142
5143 ENTER;
5144 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5145 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5146
5147 if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
5148 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
5149 dev_err(&ioa_cfg->pdev->dev,
5150 "Adapter being reset as a result of error recovery.\n");
5151
5152 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5153 ioa_cfg->sdt_state = GET_DUMP;
5154 }
5155
5156 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5157 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5158 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5159
5160 /* If we got hit with a host reset while we were already resetting
5161 the adapter for some reason, and the reset failed. */
5162 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
5163 ipr_trace;
5164 rc = FAILED;
5165 }
5166
5167 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5168 LEAVE;
5169 return rc;
5170 }
5171
5172 /**
5173 * ipr_device_reset - Reset the device
5174 * @ioa_cfg: ioa config struct
5175 * @res: resource entry struct
5176 *
5177 * This function issues a device reset to the affected device.
5178 * If the device is a SCSI device, a LUN reset will be sent
5179 * to the device first. If that does not work, a target reset
5180 * will be sent. If the device is a SATA device, a PHY reset will
5181 * be sent.
5182 *
5183 * Return value:
5184 * 0 on success / non-zero on failure
5185 **/
5186 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
5187 struct ipr_resource_entry *res)
5188 {
5189 struct ipr_cmnd *ipr_cmd;
5190 struct ipr_ioarcb *ioarcb;
5191 struct ipr_cmd_pkt *cmd_pkt;
5192 struct ipr_ioarcb_ata_regs *regs;
5193 u32 ioasc;
5194
5195 ENTER;
5196 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5197 ioarcb = &ipr_cmd->ioarcb;
5198 cmd_pkt = &ioarcb->cmd_pkt;
5199
5200 if (ipr_cmd->ioa_cfg->sis64) {
5201 regs = &ipr_cmd->i.ata_ioadl.regs;
5202 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
5203 } else
5204 regs = &ioarcb->u.add_data.u.regs;
5205
5206 ioarcb->res_handle = res->res_handle;
5207 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5208 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5209 if (ipr_is_gata(res)) {
5210 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
5211 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
5212 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5213 }
5214
5215 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5216 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5217 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5218 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
5219 if (ipr_cmd->ioa_cfg->sis64)
5220 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
5221 sizeof(struct ipr_ioasa_gata));
5222 else
5223 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
5224 sizeof(struct ipr_ioasa_gata));
5225 }
5226
5227 LEAVE;
5228 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0;
5229 }
5230
5231 /**
5232 * ipr_sata_reset - Reset the SATA port
5233 * @link: SATA link to reset
5234 * @classes: class of the attached device
5235 *
5236 * This function issues a SATA phy reset to the affected ATA link.
5237 *
5238 * Return value:
5239 * 0 on success / non-zero on failure
5240 **/
5241 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
5242 unsigned long deadline)
5243 {
5244 struct ipr_sata_port *sata_port = link->ap->private_data;
5245 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5246 struct ipr_resource_entry *res;
5247 unsigned long lock_flags = 0;
5248 int rc = -ENXIO, ret;
5249
5250 ENTER;
5251 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5252 while (ioa_cfg->in_reset_reload) {
5253 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5254 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5255 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5256 }
5257
5258 res = sata_port->res;
5259 if (res) {
5260 rc = ipr_device_reset(ioa_cfg, res);
5261 *classes = res->ata_class;
5262 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5263
5264 ret = ipr_wait_for_ops(ioa_cfg, res, ipr_match_res);
5265 if (ret != SUCCESS) {
5266 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5267 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
5268 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5269
5270 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5271 }
5272 } else
5273 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5274
5275 LEAVE;
5276 return rc;
5277 }
5278
5279 /**
5280 * ipr_eh_dev_reset - Reset the device
5281 * @scsi_cmd: scsi command struct
5282 *
5283 * This function issues a device reset to the affected device.
5284 * A LUN reset will be sent to the device first. If that does
5285 * not work, a target reset will be sent.
5286 *
5287 * Return value:
5288 * SUCCESS / FAILED
5289 **/
5290 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd)
5291 {
5292 struct ipr_cmnd *ipr_cmd;
5293 struct ipr_ioa_cfg *ioa_cfg;
5294 struct ipr_resource_entry *res;
5295 struct ata_port *ap;
5296 int rc = 0, i;
5297 struct ipr_hrr_queue *hrrq;
5298
5299 ENTER;
5300 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5301 res = scsi_cmd->device->hostdata;
5302
5303 /*
5304 * If we are currently going through reset/reload, return failed. This will force the
5305 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
5306 * reset to complete
5307 */
5308 if (ioa_cfg->in_reset_reload)
5309 return FAILED;
5310 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5311 return FAILED;
5312
5313 for_each_hrrq(hrrq, ioa_cfg) {
5314 spin_lock(&hrrq->_lock);
5315 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
5316 ipr_cmd = ioa_cfg->ipr_cmnd_list[i];
5317
5318 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
5319 if (!ipr_cmd->qc)
5320 continue;
5321 if (ipr_cmnd_is_free(ipr_cmd))
5322 continue;
5323
5324 ipr_cmd->done = ipr_sata_eh_done;
5325 if (!(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
5326 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
5327 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
5328 }
5329 }
5330 }
5331 spin_unlock(&hrrq->_lock);
5332 }
5333 res->resetting_device = 1;
5334 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
5335
5336 if (ipr_is_gata(res) && res->sata_port) {
5337 ap = res->sata_port->ap;
5338 spin_unlock_irq(scsi_cmd->device->host->host_lock);
5339 ata_std_error_handler(ap);
5340 spin_lock_irq(scsi_cmd->device->host->host_lock);
5341 } else
5342 rc = ipr_device_reset(ioa_cfg, res);
5343 res->resetting_device = 0;
5344 res->reset_occurred = 1;
5345
5346 LEAVE;
5347 return rc ? FAILED : SUCCESS;
5348 }
5349
5350 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd)
5351 {
5352 int rc;
5353 struct ipr_ioa_cfg *ioa_cfg;
5354 struct ipr_resource_entry *res;
5355
5356 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5357 res = cmd->device->hostdata;
5358
5359 if (!res)
5360 return FAILED;
5361
5362 spin_lock_irq(cmd->device->host->host_lock);
5363 rc = __ipr_eh_dev_reset(cmd);
5364 spin_unlock_irq(cmd->device->host->host_lock);
5365
5366 if (rc == SUCCESS) {
5367 if (ipr_is_gata(res) && res->sata_port)
5368 rc = ipr_wait_for_ops(ioa_cfg, res, ipr_match_res);
5369 else
5370 rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun);
5371 }
5372
5373 return rc;
5374 }
5375
5376 /**
5377 * ipr_bus_reset_done - Op done function for bus reset.
5378 * @ipr_cmd: ipr command struct
5379 *
5380 * This function is the op done function for a bus reset
5381 *
5382 * Return value:
5383 * none
5384 **/
5385 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
5386 {
5387 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5388 struct ipr_resource_entry *res;
5389
5390 ENTER;
5391 if (!ioa_cfg->sis64)
5392 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5393 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
5394 scsi_report_bus_reset(ioa_cfg->host, res->bus);
5395 break;
5396 }
5397 }
5398
5399 /*
5400 * If abort has not completed, indicate the reset has, else call the
5401 * abort's done function to wake the sleeping eh thread
5402 */
5403 if (ipr_cmd->sibling->sibling)
5404 ipr_cmd->sibling->sibling = NULL;
5405 else
5406 ipr_cmd->sibling->done(ipr_cmd->sibling);
5407
5408 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5409 LEAVE;
5410 }
5411
5412 /**
5413 * ipr_abort_timeout - An abort task has timed out
5414 * @ipr_cmd: ipr command struct
5415 *
5416 * This function handles when an abort task times out. If this
5417 * happens we issue a bus reset since we have resources tied
5418 * up that must be freed before returning to the midlayer.
5419 *
5420 * Return value:
5421 * none
5422 **/
5423 static void ipr_abort_timeout(struct timer_list *t)
5424 {
5425 struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
5426 struct ipr_cmnd *reset_cmd;
5427 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5428 struct ipr_cmd_pkt *cmd_pkt;
5429 unsigned long lock_flags = 0;
5430
5431 ENTER;
5432 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5433 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
5434 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5435 return;
5436 }
5437
5438 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
5439 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5440 ipr_cmd->sibling = reset_cmd;
5441 reset_cmd->sibling = ipr_cmd;
5442 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
5443 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
5444 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5445 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5446 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
5447
5448 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5449 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5450 LEAVE;
5451 }
5452
5453 /**
5454 * ipr_cancel_op - Cancel specified op
5455 * @scsi_cmd: scsi command struct
5456 *
5457 * This function cancels specified op.
5458 *
5459 * Return value:
5460 * SUCCESS / FAILED
5461 **/
5462 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd)
5463 {
5464 struct ipr_cmnd *ipr_cmd;
5465 struct ipr_ioa_cfg *ioa_cfg;
5466 struct ipr_resource_entry *res;
5467 struct ipr_cmd_pkt *cmd_pkt;
5468 u32 ioasc, int_reg;
5469 int i, op_found = 0;
5470 struct ipr_hrr_queue *hrrq;
5471
5472 ENTER;
5473 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5474 res = scsi_cmd->device->hostdata;
5475
5476 /* If we are currently going through reset/reload, return failed.
5477 * This will force the mid-layer to call ipr_eh_host_reset,
5478 * which will then go to sleep and wait for the reset to complete
5479 */
5480 if (ioa_cfg->in_reset_reload ||
5481 ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5482 return FAILED;
5483 if (!res)
5484 return FAILED;
5485
5486 /*
5487 * If we are aborting a timed out op, chances are that the timeout was caused
5488 * by a still not detected EEH error. In such cases, reading a register will
5489 * trigger the EEH recovery infrastructure.
5490 */
5491 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5492
5493 if (!ipr_is_gscsi(res))
5494 return FAILED;
5495
5496 for_each_hrrq(hrrq, ioa_cfg) {
5497 spin_lock(&hrrq->_lock);
5498 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
5499 if (ioa_cfg->ipr_cmnd_list[i]->scsi_cmd == scsi_cmd) {
5500 if (!ipr_cmnd_is_free(ioa_cfg->ipr_cmnd_list[i])) {
5501 op_found = 1;
5502 break;
5503 }
5504 }
5505 }
5506 spin_unlock(&hrrq->_lock);
5507 }
5508
5509 if (!op_found)
5510 return SUCCESS;
5511
5512 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5513 ipr_cmd->ioarcb.res_handle = res->res_handle;
5514 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5515 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5516 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5517 ipr_cmd->u.sdev = scsi_cmd->device;
5518
5519 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
5520 scsi_cmd->cmnd[0]);
5521 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
5522 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5523
5524 /*
5525 * If the abort task timed out and we sent a bus reset, we will get
5526 * one the following responses to the abort
5527 */
5528 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
5529 ioasc = 0;
5530 ipr_trace;
5531 }
5532
5533 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5534 if (!ipr_is_naca_model(res))
5535 res->needs_sync_complete = 1;
5536
5537 LEAVE;
5538 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS;
5539 }
5540
5541 /**
5542 * ipr_eh_abort - Abort a single op
5543 * @scsi_cmd: scsi command struct
5544 *
5545 * Return value:
5546 * 0 if scan in progress / 1 if scan is complete
5547 **/
5548 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time)
5549 {
5550 unsigned long lock_flags;
5551 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
5552 int rc = 0;
5553
5554 spin_lock_irqsave(shost->host_lock, lock_flags);
5555 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done)
5556 rc = 1;
5557 if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2))
5558 rc = 1;
5559 spin_unlock_irqrestore(shost->host_lock, lock_flags);
5560 return rc;
5561 }
5562
5563 /**
5564 * ipr_eh_host_reset - Reset the host adapter
5565 * @scsi_cmd: scsi command struct
5566 *
5567 * Return value:
5568 * SUCCESS / FAILED
5569 **/
5570 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd)
5571 {
5572 unsigned long flags;
5573 int rc;
5574 struct ipr_ioa_cfg *ioa_cfg;
5575
5576 ENTER;
5577
5578 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5579
5580 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
5581 rc = ipr_cancel_op(scsi_cmd);
5582 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
5583
5584 if (rc == SUCCESS)
5585 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun);
5586 LEAVE;
5587 return rc;
5588 }
5589
5590 /**
5591 * ipr_handle_other_interrupt - Handle "other" interrupts
5592 * @ioa_cfg: ioa config struct
5593 * @int_reg: interrupt register
5594 *
5595 * Return value:
5596 * IRQ_NONE / IRQ_HANDLED
5597 **/
5598 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
5599 u32 int_reg)
5600 {
5601 irqreturn_t rc = IRQ_HANDLED;
5602 u32 int_mask_reg;
5603
5604 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5605 int_reg &= ~int_mask_reg;
5606
5607 /* If an interrupt on the adapter did not occur, ignore it.
5608 * Or in the case of SIS 64, check for a stage change interrupt.
5609 */
5610 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5611 if (ioa_cfg->sis64) {
5612 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5613 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5614 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5615
5616 /* clear stage change */
5617 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5618 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5619 list_del(&ioa_cfg->reset_cmd->queue);
5620 del_timer(&ioa_cfg->reset_cmd->timer);
5621 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5622 return IRQ_HANDLED;
5623 }
5624 }
5625
5626 return IRQ_NONE;
5627 }
5628
5629 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5630 /* Mask the interrupt */
5631 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5632 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5633
5634 list_del(&ioa_cfg->reset_cmd->queue);
5635 del_timer(&ioa_cfg->reset_cmd->timer);
5636 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5637 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5638 if (ioa_cfg->clear_isr) {
5639 if (ipr_debug && printk_ratelimit())
5640 dev_err(&ioa_cfg->pdev->dev,
5641 "Spurious interrupt detected. 0x%08X\n", int_reg);
5642 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5643 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5644 return IRQ_NONE;
5645 }
5646 } else {
5647 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5648 ioa_cfg->ioa_unit_checked = 1;
5649 else if (int_reg & IPR_PCII_NO_HOST_RRQ)
5650 dev_err(&ioa_cfg->pdev->dev,
5651 "No Host RRQ. 0x%08X\n", int_reg);
5652 else
5653 dev_err(&ioa_cfg->pdev->dev,
5654 "Permanent IOA failure. 0x%08X\n", int_reg);
5655
5656 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5657 ioa_cfg->sdt_state = GET_DUMP;
5658
5659 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5660 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5661 }
5662
5663 return rc;
5664 }
5665
5666 /**
5667 * ipr_isr_eh - Interrupt service routine error handler
5668 * @ioa_cfg: ioa config struct
5669 * @msg: message to log
5670 *
5671 * Return value:
5672 * none
5673 **/
5674 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number)
5675 {
5676 ioa_cfg->errors_logged++;
5677 dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number);
5678
5679 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5680 ioa_cfg->sdt_state = GET_DUMP;
5681
5682 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5683 }
5684
5685 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget,
5686 struct list_head *doneq)
5687 {
5688 u32 ioasc;
5689 u16 cmd_index;
5690 struct ipr_cmnd *ipr_cmd;
5691 struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg;
5692 int num_hrrq = 0;
5693
5694 /* If interrupts are disabled, ignore the interrupt */
5695 if (!hrr_queue->allow_interrupts)
5696 return 0;
5697
5698 while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5699 hrr_queue->toggle_bit) {
5700
5701 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) &
5702 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >>
5703 IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5704
5705 if (unlikely(cmd_index > hrr_queue->max_cmd_id ||
5706 cmd_index < hrr_queue->min_cmd_id)) {
5707 ipr_isr_eh(ioa_cfg,
5708 "Invalid response handle from IOA: ",
5709 cmd_index);
5710 break;
5711 }
5712
5713 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5714 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5715
5716 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5717
5718 list_move_tail(&ipr_cmd->queue, doneq);
5719
5720 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) {
5721 hrr_queue->hrrq_curr++;
5722 } else {
5723 hrr_queue->hrrq_curr = hrr_queue->hrrq_start;
5724 hrr_queue->toggle_bit ^= 1u;
5725 }
5726 num_hrrq++;
5727 if (budget > 0 && num_hrrq >= budget)
5728 break;
5729 }
5730
5731 return num_hrrq;
5732 }
5733
5734 static int ipr_iopoll(struct irq_poll *iop, int budget)
5735 {
5736 struct ipr_ioa_cfg *ioa_cfg;
5737 struct ipr_hrr_queue *hrrq;
5738 struct ipr_cmnd *ipr_cmd, *temp;
5739 unsigned long hrrq_flags;
5740 int completed_ops;
5741 LIST_HEAD(doneq);
5742
5743 hrrq = container_of(iop, struct ipr_hrr_queue, iopoll);
5744 ioa_cfg = hrrq->ioa_cfg;
5745
5746 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5747 completed_ops = ipr_process_hrrq(hrrq, budget, &doneq);
5748
5749 if (completed_ops < budget)
5750 irq_poll_complete(iop);
5751 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5752
5753 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5754 list_del(&ipr_cmd->queue);
5755 del_timer(&ipr_cmd->timer);
5756 ipr_cmd->fast_done(ipr_cmd);
5757 }
5758
5759 return completed_ops;
5760 }
5761
5762 /**
5763 * ipr_isr - Interrupt service routine
5764 * @irq: irq number
5765 * @devp: pointer to ioa config struct
5766 *
5767 * Return value:
5768 * IRQ_NONE / IRQ_HANDLED
5769 **/
5770 static irqreturn_t ipr_isr(int irq, void *devp)
5771 {
5772 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5773 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5774 unsigned long hrrq_flags = 0;
5775 u32 int_reg = 0;
5776 int num_hrrq = 0;
5777 int irq_none = 0;
5778 struct ipr_cmnd *ipr_cmd, *temp;
5779 irqreturn_t rc = IRQ_NONE;
5780 LIST_HEAD(doneq);
5781
5782 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5783 /* If interrupts are disabled, ignore the interrupt */
5784 if (!hrrq->allow_interrupts) {
5785 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5786 return IRQ_NONE;
5787 }
5788
5789 while (1) {
5790 if (ipr_process_hrrq(hrrq, -1, &doneq)) {
5791 rc = IRQ_HANDLED;
5792
5793 if (!ioa_cfg->clear_isr)
5794 break;
5795
5796 /* Clear the PCI interrupt */
5797 num_hrrq = 0;
5798 do {
5799 writel(IPR_PCII_HRRQ_UPDATED,
5800 ioa_cfg->regs.clr_interrupt_reg32);
5801 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5802 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5803 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5804
5805 } else if (rc == IRQ_NONE && irq_none == 0) {
5806 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5807 irq_none++;
5808 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5809 int_reg & IPR_PCII_HRRQ_UPDATED) {
5810 ipr_isr_eh(ioa_cfg,
5811 "Error clearing HRRQ: ", num_hrrq);
5812 rc = IRQ_HANDLED;
5813 break;
5814 } else
5815 break;
5816 }
5817
5818 if (unlikely(rc == IRQ_NONE))
5819 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5820
5821 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5822 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5823 list_del(&ipr_cmd->queue);
5824 del_timer(&ipr_cmd->timer);
5825 ipr_cmd->fast_done(ipr_cmd);
5826 }
5827 return rc;
5828 }
5829
5830 /**
5831 * ipr_isr_mhrrq - Interrupt service routine
5832 * @irq: irq number
5833 * @devp: pointer to ioa config struct
5834 *
5835 * Return value:
5836 * IRQ_NONE / IRQ_HANDLED
5837 **/
5838 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp)
5839 {
5840 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5841 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5842 unsigned long hrrq_flags = 0;
5843 struct ipr_cmnd *ipr_cmd, *temp;
5844 irqreturn_t rc = IRQ_NONE;
5845 LIST_HEAD(doneq);
5846
5847 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5848
5849 /* If interrupts are disabled, ignore the interrupt */
5850 if (!hrrq->allow_interrupts) {
5851 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5852 return IRQ_NONE;
5853 }
5854
5855 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
5856 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5857 hrrq->toggle_bit) {
5858 irq_poll_sched(&hrrq->iopoll);
5859 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5860 return IRQ_HANDLED;
5861 }
5862 } else {
5863 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5864 hrrq->toggle_bit)
5865
5866 if (ipr_process_hrrq(hrrq, -1, &doneq))
5867 rc = IRQ_HANDLED;
5868 }
5869
5870 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5871
5872 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5873 list_del(&ipr_cmd->queue);
5874 del_timer(&ipr_cmd->timer);
5875 ipr_cmd->fast_done(ipr_cmd);
5876 }
5877 return rc;
5878 }
5879
5880 /**
5881 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5882 * @ioa_cfg: ioa config struct
5883 * @ipr_cmd: ipr command struct
5884 *
5885 * Return value:
5886 * 0 on success / -1 on failure
5887 **/
5888 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5889 struct ipr_cmnd *ipr_cmd)
5890 {
5891 int i, nseg;
5892 struct scatterlist *sg;
5893 u32 length;
5894 u32 ioadl_flags = 0;
5895 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5896 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5897 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5898
5899 length = scsi_bufflen(scsi_cmd);
5900 if (!length)
5901 return 0;
5902
5903 nseg = scsi_dma_map(scsi_cmd);
5904 if (nseg < 0) {
5905 if (printk_ratelimit())
5906 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5907 return -1;
5908 }
5909
5910 ipr_cmd->dma_use_sg = nseg;
5911
5912 ioarcb->data_transfer_length = cpu_to_be32(length);
5913 ioarcb->ioadl_len =
5914 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5915
5916 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5917 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5918 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5919 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5920 ioadl_flags = IPR_IOADL_FLAGS_READ;
5921
5922 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5923 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5924 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5925 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5926 }
5927
5928 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5929 return 0;
5930 }
5931
5932 /**
5933 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5934 * @ioa_cfg: ioa config struct
5935 * @ipr_cmd: ipr command struct
5936 *
5937 * Return value:
5938 * 0 on success / -1 on failure
5939 **/
5940 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5941 struct ipr_cmnd *ipr_cmd)
5942 {
5943 int i, nseg;
5944 struct scatterlist *sg;
5945 u32 length;
5946 u32 ioadl_flags = 0;
5947 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5948 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5949 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5950
5951 length = scsi_bufflen(scsi_cmd);
5952 if (!length)
5953 return 0;
5954
5955 nseg = scsi_dma_map(scsi_cmd);
5956 if (nseg < 0) {
5957 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5958 return -1;
5959 }
5960
5961 ipr_cmd->dma_use_sg = nseg;
5962
5963 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5964 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5965 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5966 ioarcb->data_transfer_length = cpu_to_be32(length);
5967 ioarcb->ioadl_len =
5968 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5969 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5970 ioadl_flags = IPR_IOADL_FLAGS_READ;
5971 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5972 ioarcb->read_ioadl_len =
5973 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5974 }
5975
5976 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5977 ioadl = ioarcb->u.add_data.u.ioadl;
5978 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5979 offsetof(struct ipr_ioarcb, u.add_data));
5980 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5981 }
5982
5983 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5984 ioadl[i].flags_and_data_len =
5985 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5986 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5987 }
5988
5989 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5990 return 0;
5991 }
5992
5993 /**
5994 * __ipr_erp_done - Process completion of ERP for a device
5995 * @ipr_cmd: ipr command struct
5996 *
5997 * This function copies the sense buffer into the scsi_cmd
5998 * struct and pushes the scsi_done function.
5999 *
6000 * Return value:
6001 * nothing
6002 **/
6003 static void __ipr_erp_done(struct ipr_cmnd *ipr_cmd)
6004 {
6005 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6006 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6007 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6008
6009 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
6010 scsi_cmd->result |= (DID_ERROR << 16);
6011 scmd_printk(KERN_ERR, scsi_cmd,
6012 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
6013 } else {
6014 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
6015 SCSI_SENSE_BUFFERSIZE);
6016 }
6017
6018 if (res) {
6019 if (!ipr_is_naca_model(res))
6020 res->needs_sync_complete = 1;
6021 res->in_erp = 0;
6022 }
6023 scsi_dma_unmap(ipr_cmd->scsi_cmd);
6024 scsi_cmd->scsi_done(scsi_cmd);
6025 if (ipr_cmd->eh_comp)
6026 complete(ipr_cmd->eh_comp);
6027 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6028 }
6029
6030 /**
6031 * ipr_erp_done - Process completion of ERP for a device
6032 * @ipr_cmd: ipr command struct
6033 *
6034 * This function copies the sense buffer into the scsi_cmd
6035 * struct and pushes the scsi_done function.
6036 *
6037 * Return value:
6038 * nothing
6039 **/
6040 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
6041 {
6042 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
6043 unsigned long hrrq_flags;
6044
6045 spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
6046 __ipr_erp_done(ipr_cmd);
6047 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
6048 }
6049
6050 /**
6051 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
6052 * @ipr_cmd: ipr command struct
6053 *
6054 * Return value:
6055 * none
6056 **/
6057 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
6058 {
6059 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6060 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6061 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6062
6063 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
6064 ioarcb->data_transfer_length = 0;
6065 ioarcb->read_data_transfer_length = 0;
6066 ioarcb->ioadl_len = 0;
6067 ioarcb->read_ioadl_len = 0;
6068 ioasa->hdr.ioasc = 0;
6069 ioasa->hdr.residual_data_len = 0;
6070
6071 if (ipr_cmd->ioa_cfg->sis64)
6072 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6073 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
6074 else {
6075 ioarcb->write_ioadl_addr =
6076 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
6077 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
6078 }
6079 }
6080
6081 /**
6082 * __ipr_erp_request_sense - Send request sense to a device
6083 * @ipr_cmd: ipr command struct
6084 *
6085 * This function sends a request sense to a device as a result
6086 * of a check condition.
6087 *
6088 * Return value:
6089 * nothing
6090 **/
6091 static void __ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
6092 {
6093 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
6094 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6095
6096 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
6097 __ipr_erp_done(ipr_cmd);
6098 return;
6099 }
6100
6101 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
6102
6103 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
6104 cmd_pkt->cdb[0] = REQUEST_SENSE;
6105 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
6106 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
6107 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6108 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
6109
6110 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
6111 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
6112
6113 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
6114 IPR_REQUEST_SENSE_TIMEOUT * 2);
6115 }
6116
6117 /**
6118 * ipr_erp_request_sense - Send request sense to a device
6119 * @ipr_cmd: ipr command struct
6120 *
6121 * This function sends a request sense to a device as a result
6122 * of a check condition.
6123 *
6124 * Return value:
6125 * nothing
6126 **/
6127 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
6128 {
6129 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
6130 unsigned long hrrq_flags;
6131
6132 spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
6133 __ipr_erp_request_sense(ipr_cmd);
6134 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
6135 }
6136
6137 /**
6138 * ipr_erp_cancel_all - Send cancel all to a device
6139 * @ipr_cmd: ipr command struct
6140 *
6141 * This function sends a cancel all to a device to clear the
6142 * queue. If we are running TCQ on the device, QERR is set to 1,
6143 * which means all outstanding ops have been dropped on the floor.
6144 * Cancel all will return them to us.
6145 *
6146 * Return value:
6147 * nothing
6148 **/
6149 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
6150 {
6151 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6152 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6153 struct ipr_cmd_pkt *cmd_pkt;
6154
6155 res->in_erp = 1;
6156
6157 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
6158
6159 if (!scsi_cmd->device->simple_tags) {
6160 __ipr_erp_request_sense(ipr_cmd);
6161 return;
6162 }
6163
6164 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
6165 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
6166 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
6167
6168 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
6169 IPR_CANCEL_ALL_TIMEOUT);
6170 }
6171
6172 /**
6173 * ipr_dump_ioasa - Dump contents of IOASA
6174 * @ioa_cfg: ioa config struct
6175 * @ipr_cmd: ipr command struct
6176 * @res: resource entry struct
6177 *
6178 * This function is invoked by the interrupt handler when ops
6179 * fail. It will log the IOASA if appropriate. Only called
6180 * for GPDD ops.
6181 *
6182 * Return value:
6183 * none
6184 **/
6185 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
6186 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
6187 {
6188 int i;
6189 u16 data_len;
6190 u32 ioasc, fd_ioasc;
6191 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6192 __be32 *ioasa_data = (__be32 *)ioasa;
6193 int error_index;
6194
6195 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
6196 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
6197
6198 if (0 == ioasc)
6199 return;
6200
6201 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
6202 return;
6203
6204 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
6205 error_index = ipr_get_error(fd_ioasc);
6206 else
6207 error_index = ipr_get_error(ioasc);
6208
6209 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
6210 /* Don't log an error if the IOA already logged one */
6211 if (ioasa->hdr.ilid != 0)
6212 return;
6213
6214 if (!ipr_is_gscsi(res))
6215 return;
6216
6217 if (ipr_error_table[error_index].log_ioasa == 0)
6218 return;
6219 }
6220
6221 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
6222
6223 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
6224 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
6225 data_len = sizeof(struct ipr_ioasa64);
6226 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
6227 data_len = sizeof(struct ipr_ioasa);
6228
6229 ipr_err("IOASA Dump:\n");
6230
6231 for (i = 0; i < data_len / 4; i += 4) {
6232 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
6233 be32_to_cpu(ioasa_data[i]),
6234 be32_to_cpu(ioasa_data[i+1]),
6235 be32_to_cpu(ioasa_data[i+2]),
6236 be32_to_cpu(ioasa_data[i+3]));
6237 }
6238 }
6239
6240 /**
6241 * ipr_gen_sense - Generate SCSI sense data from an IOASA
6242 * @ioasa: IOASA
6243 * @sense_buf: sense data buffer
6244 *
6245 * Return value:
6246 * none
6247 **/
6248 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
6249 {
6250 u32 failing_lba;
6251 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
6252 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
6253 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6254 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
6255
6256 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
6257
6258 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
6259 return;
6260
6261 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
6262
6263 if (ipr_is_vset_device(res) &&
6264 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
6265 ioasa->u.vset.failing_lba_hi != 0) {
6266 sense_buf[0] = 0x72;
6267 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
6268 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
6269 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
6270
6271 sense_buf[7] = 12;
6272 sense_buf[8] = 0;
6273 sense_buf[9] = 0x0A;
6274 sense_buf[10] = 0x80;
6275
6276 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
6277
6278 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
6279 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
6280 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
6281 sense_buf[15] = failing_lba & 0x000000ff;
6282
6283 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6284
6285 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
6286 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
6287 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
6288 sense_buf[19] = failing_lba & 0x000000ff;
6289 } else {
6290 sense_buf[0] = 0x70;
6291 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
6292 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
6293 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
6294
6295 /* Illegal request */
6296 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
6297 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
6298 sense_buf[7] = 10; /* additional length */
6299
6300 /* IOARCB was in error */
6301 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
6302 sense_buf[15] = 0xC0;
6303 else /* Parameter data was invalid */
6304 sense_buf[15] = 0x80;
6305
6306 sense_buf[16] =
6307 ((IPR_FIELD_POINTER_MASK &
6308 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
6309 sense_buf[17] =
6310 (IPR_FIELD_POINTER_MASK &
6311 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
6312 } else {
6313 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
6314 if (ipr_is_vset_device(res))
6315 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6316 else
6317 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
6318
6319 sense_buf[0] |= 0x80; /* Or in the Valid bit */
6320 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
6321 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
6322 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
6323 sense_buf[6] = failing_lba & 0x000000ff;
6324 }
6325
6326 sense_buf[7] = 6; /* additional length */
6327 }
6328 }
6329 }
6330
6331 /**
6332 * ipr_get_autosense - Copy autosense data to sense buffer
6333 * @ipr_cmd: ipr command struct
6334 *
6335 * This function copies the autosense buffer to the buffer
6336 * in the scsi_cmd, if there is autosense available.
6337 *
6338 * Return value:
6339 * 1 if autosense was available / 0 if not
6340 **/
6341 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
6342 {
6343 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6344 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
6345
6346 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
6347 return 0;
6348
6349 if (ipr_cmd->ioa_cfg->sis64)
6350 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
6351 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
6352 SCSI_SENSE_BUFFERSIZE));
6353 else
6354 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
6355 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
6356 SCSI_SENSE_BUFFERSIZE));
6357 return 1;
6358 }
6359
6360 /**
6361 * ipr_erp_start - Process an error response for a SCSI op
6362 * @ioa_cfg: ioa config struct
6363 * @ipr_cmd: ipr command struct
6364 *
6365 * This function determines whether or not to initiate ERP
6366 * on the affected device.
6367 *
6368 * Return value:
6369 * nothing
6370 **/
6371 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
6372 struct ipr_cmnd *ipr_cmd)
6373 {
6374 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6375 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6376 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6377 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
6378
6379 if (!res) {
6380 __ipr_scsi_eh_done(ipr_cmd);
6381 return;
6382 }
6383
6384 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
6385 ipr_gen_sense(ipr_cmd);
6386
6387 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6388
6389 switch (masked_ioasc) {
6390 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
6391 if (ipr_is_naca_model(res))
6392 scsi_cmd->result |= (DID_ABORT << 16);
6393 else
6394 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6395 break;
6396 case IPR_IOASC_IR_RESOURCE_HANDLE:
6397 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
6398 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6399 break;
6400 case IPR_IOASC_HW_SEL_TIMEOUT:
6401 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6402 if (!ipr_is_naca_model(res))
6403 res->needs_sync_complete = 1;
6404 break;
6405 case IPR_IOASC_SYNC_REQUIRED:
6406 if (!res->in_erp)
6407 res->needs_sync_complete = 1;
6408 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6409 break;
6410 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
6411 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
6412 /*
6413 * exception: do not set DID_PASSTHROUGH on CHECK CONDITION
6414 * so SCSI mid-layer and upper layers handle it accordingly.
6415 */
6416 if (scsi_cmd->result != SAM_STAT_CHECK_CONDITION)
6417 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
6418 break;
6419 case IPR_IOASC_BUS_WAS_RESET:
6420 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
6421 /*
6422 * Report the bus reset and ask for a retry. The device
6423 * will give CC/UA the next command.
6424 */
6425 if (!res->resetting_device)
6426 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
6427 scsi_cmd->result |= (DID_ERROR << 16);
6428 if (!ipr_is_naca_model(res))
6429 res->needs_sync_complete = 1;
6430 break;
6431 case IPR_IOASC_HW_DEV_BUS_STATUS:
6432 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
6433 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
6434 if (!ipr_get_autosense(ipr_cmd)) {
6435 if (!ipr_is_naca_model(res)) {
6436 ipr_erp_cancel_all(ipr_cmd);
6437 return;
6438 }
6439 }
6440 }
6441 if (!ipr_is_naca_model(res))
6442 res->needs_sync_complete = 1;
6443 break;
6444 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
6445 break;
6446 case IPR_IOASC_IR_NON_OPTIMIZED:
6447 if (res->raw_mode) {
6448 res->raw_mode = 0;
6449 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6450 } else
6451 scsi_cmd->result |= (DID_ERROR << 16);
6452 break;
6453 default:
6454 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6455 scsi_cmd->result |= (DID_ERROR << 16);
6456 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
6457 res->needs_sync_complete = 1;
6458 break;
6459 }
6460
6461 scsi_dma_unmap(ipr_cmd->scsi_cmd);
6462 scsi_cmd->scsi_done(scsi_cmd);
6463 if (ipr_cmd->eh_comp)
6464 complete(ipr_cmd->eh_comp);
6465 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6466 }
6467
6468 /**
6469 * ipr_scsi_done - mid-layer done function
6470 * @ipr_cmd: ipr command struct
6471 *
6472 * This function is invoked by the interrupt handler for
6473 * ops generated by the SCSI mid-layer
6474 *
6475 * Return value:
6476 * none
6477 **/
6478 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
6479 {
6480 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6481 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6482 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6483 unsigned long lock_flags;
6484
6485 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
6486
6487 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
6488 scsi_dma_unmap(scsi_cmd);
6489
6490 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
6491 scsi_cmd->scsi_done(scsi_cmd);
6492 if (ipr_cmd->eh_comp)
6493 complete(ipr_cmd->eh_comp);
6494 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6495 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
6496 } else {
6497 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6498 spin_lock(&ipr_cmd->hrrq->_lock);
6499 ipr_erp_start(ioa_cfg, ipr_cmd);
6500 spin_unlock(&ipr_cmd->hrrq->_lock);
6501 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6502 }
6503 }
6504
6505 /**
6506 * ipr_queuecommand - Queue a mid-layer request
6507 * @shost: scsi host struct
6508 * @scsi_cmd: scsi command struct
6509 *
6510 * This function queues a request generated by the mid-layer.
6511 *
6512 * Return value:
6513 * 0 on success
6514 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
6515 * SCSI_MLQUEUE_HOST_BUSY if host is busy
6516 **/
6517 static int ipr_queuecommand(struct Scsi_Host *shost,
6518 struct scsi_cmnd *scsi_cmd)
6519 {
6520 struct ipr_ioa_cfg *ioa_cfg;
6521 struct ipr_resource_entry *res;
6522 struct ipr_ioarcb *ioarcb;
6523 struct ipr_cmnd *ipr_cmd;
6524 unsigned long hrrq_flags, lock_flags;
6525 int rc;
6526 struct ipr_hrr_queue *hrrq;
6527 int hrrq_id;
6528
6529 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
6530
6531 scsi_cmd->result = (DID_OK << 16);
6532 res = scsi_cmd->device->hostdata;
6533
6534 if (ipr_is_gata(res) && res->sata_port) {
6535 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6536 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
6537 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6538 return rc;
6539 }
6540
6541 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6542 hrrq = &ioa_cfg->hrrq[hrrq_id];
6543
6544 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6545 /*
6546 * We are currently blocking all devices due to a host reset
6547 * We have told the host to stop giving us new requests, but
6548 * ERP ops don't count. FIXME
6549 */
6550 if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) {
6551 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6552 return SCSI_MLQUEUE_HOST_BUSY;
6553 }
6554
6555 /*
6556 * FIXME - Create scsi_set_host_offline interface
6557 * and the ioa_is_dead check can be removed
6558 */
6559 if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) {
6560 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6561 goto err_nodev;
6562 }
6563
6564 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6565 if (ipr_cmd == NULL) {
6566 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6567 return SCSI_MLQUEUE_HOST_BUSY;
6568 }
6569 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6570
6571 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done);
6572 ioarcb = &ipr_cmd->ioarcb;
6573
6574 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
6575 ipr_cmd->scsi_cmd = scsi_cmd;
6576 ipr_cmd->done = ipr_scsi_eh_done;
6577
6578 if (ipr_is_gscsi(res)) {
6579 if (scsi_cmd->underflow == 0)
6580 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6581
6582 if (res->reset_occurred) {
6583 res->reset_occurred = 0;
6584 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
6585 }
6586 }
6587
6588 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
6589 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6590
6591 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
6592 if (scsi_cmd->flags & SCMD_TAGGED)
6593 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK;
6594 else
6595 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK;
6596 }
6597
6598 if (scsi_cmd->cmnd[0] >= 0xC0 &&
6599 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) {
6600 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6601 }
6602 if (res->raw_mode && ipr_is_af_dasd_device(res)) {
6603 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE;
6604
6605 if (scsi_cmd->underflow == 0)
6606 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6607 }
6608
6609 if (ioa_cfg->sis64)
6610 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
6611 else
6612 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
6613
6614 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6615 if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) {
6616 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6617 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6618 if (!rc)
6619 scsi_dma_unmap(scsi_cmd);
6620 return SCSI_MLQUEUE_HOST_BUSY;
6621 }
6622
6623 if (unlikely(hrrq->ioa_is_dead)) {
6624 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6625 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6626 scsi_dma_unmap(scsi_cmd);
6627 goto err_nodev;
6628 }
6629
6630 ioarcb->res_handle = res->res_handle;
6631 if (res->needs_sync_complete) {
6632 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
6633 res->needs_sync_complete = 0;
6634 }
6635 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q);
6636 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6637 ipr_send_command(ipr_cmd);
6638 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6639 return 0;
6640
6641 err_nodev:
6642 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6643 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
6644 scsi_cmd->result = (DID_NO_CONNECT << 16);
6645 scsi_cmd->scsi_done(scsi_cmd);
6646 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6647 return 0;
6648 }
6649
6650 /**
6651 * ipr_ioctl - IOCTL handler
6652 * @sdev: scsi device struct
6653 * @cmd: IOCTL cmd
6654 * @arg: IOCTL arg
6655 *
6656 * Return value:
6657 * 0 on success / other on failure
6658 **/
6659 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
6660 {
6661 struct ipr_resource_entry *res;
6662
6663 res = (struct ipr_resource_entry *)sdev->hostdata;
6664 if (res && ipr_is_gata(res)) {
6665 if (cmd == HDIO_GET_IDENTITY)
6666 return -ENOTTY;
6667 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
6668 }
6669
6670 return -EINVAL;
6671 }
6672
6673 /**
6674 * ipr_info - Get information about the card/driver
6675 * @scsi_host: scsi host struct
6676 *
6677 * Return value:
6678 * pointer to buffer with description string
6679 **/
6680 static const char *ipr_ioa_info(struct Scsi_Host *host)
6681 {
6682 static char buffer[512];
6683 struct ipr_ioa_cfg *ioa_cfg;
6684 unsigned long lock_flags = 0;
6685
6686 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
6687
6688 spin_lock_irqsave(host->host_lock, lock_flags);
6689 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
6690 spin_unlock_irqrestore(host->host_lock, lock_flags);
6691
6692 return buffer;
6693 }
6694
6695 static struct scsi_host_template driver_template = {
6696 .module = THIS_MODULE,
6697 .name = "IPR",
6698 .info = ipr_ioa_info,
6699 .ioctl = ipr_ioctl,
6700 .queuecommand = ipr_queuecommand,
6701 .eh_abort_handler = ipr_eh_abort,
6702 .eh_device_reset_handler = ipr_eh_dev_reset,
6703 .eh_host_reset_handler = ipr_eh_host_reset,
6704 .slave_alloc = ipr_slave_alloc,
6705 .slave_configure = ipr_slave_configure,
6706 .slave_destroy = ipr_slave_destroy,
6707 .scan_finished = ipr_scan_finished,
6708 .target_alloc = ipr_target_alloc,
6709 .target_destroy = ipr_target_destroy,
6710 .change_queue_depth = ipr_change_queue_depth,
6711 .bios_param = ipr_biosparam,
6712 .can_queue = IPR_MAX_COMMANDS,
6713 .this_id = -1,
6714 .sg_tablesize = IPR_MAX_SGLIST,
6715 .max_sectors = IPR_IOA_MAX_SECTORS,
6716 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
6717 .use_clustering = ENABLE_CLUSTERING,
6718 .shost_attrs = ipr_ioa_attrs,
6719 .sdev_attrs = ipr_dev_attrs,
6720 .proc_name = IPR_NAME,
6721 };
6722
6723 /**
6724 * ipr_ata_phy_reset - libata phy_reset handler
6725 * @ap: ata port to reset
6726 *
6727 **/
6728 static void ipr_ata_phy_reset(struct ata_port *ap)
6729 {
6730 unsigned long flags;
6731 struct ipr_sata_port *sata_port = ap->private_data;
6732 struct ipr_resource_entry *res = sata_port->res;
6733 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6734 int rc;
6735
6736 ENTER;
6737 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6738 while (ioa_cfg->in_reset_reload) {
6739 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6740 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6741 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6742 }
6743
6744 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
6745 goto out_unlock;
6746
6747 rc = ipr_device_reset(ioa_cfg, res);
6748
6749 if (rc) {
6750 ap->link.device[0].class = ATA_DEV_NONE;
6751 goto out_unlock;
6752 }
6753
6754 ap->link.device[0].class = res->ata_class;
6755 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
6756 ap->link.device[0].class = ATA_DEV_NONE;
6757
6758 out_unlock:
6759 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6760 LEAVE;
6761 }
6762
6763 /**
6764 * ipr_ata_post_internal - Cleanup after an internal command
6765 * @qc: ATA queued command
6766 *
6767 * Return value:
6768 * none
6769 **/
6770 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
6771 {
6772 struct ipr_sata_port *sata_port = qc->ap->private_data;
6773 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6774 struct ipr_cmnd *ipr_cmd;
6775 struct ipr_hrr_queue *hrrq;
6776 unsigned long flags;
6777
6778 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6779 while (ioa_cfg->in_reset_reload) {
6780 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6781 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6782 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6783 }
6784
6785 for_each_hrrq(hrrq, ioa_cfg) {
6786 spin_lock(&hrrq->_lock);
6787 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
6788 if (ipr_cmd->qc == qc) {
6789 ipr_device_reset(ioa_cfg, sata_port->res);
6790 break;
6791 }
6792 }
6793 spin_unlock(&hrrq->_lock);
6794 }
6795 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6796 }
6797
6798 /**
6799 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6800 * @regs: destination
6801 * @tf: source ATA taskfile
6802 *
6803 * Return value:
6804 * none
6805 **/
6806 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6807 struct ata_taskfile *tf)
6808 {
6809 regs->feature = tf->feature;
6810 regs->nsect = tf->nsect;
6811 regs->lbal = tf->lbal;
6812 regs->lbam = tf->lbam;
6813 regs->lbah = tf->lbah;
6814 regs->device = tf->device;
6815 regs->command = tf->command;
6816 regs->hob_feature = tf->hob_feature;
6817 regs->hob_nsect = tf->hob_nsect;
6818 regs->hob_lbal = tf->hob_lbal;
6819 regs->hob_lbam = tf->hob_lbam;
6820 regs->hob_lbah = tf->hob_lbah;
6821 regs->ctl = tf->ctl;
6822 }
6823
6824 /**
6825 * ipr_sata_done - done function for SATA commands
6826 * @ipr_cmd: ipr command struct
6827 *
6828 * This function is invoked by the interrupt handler for
6829 * ops generated by the SCSI mid-layer to SATA devices
6830 *
6831 * Return value:
6832 * none
6833 **/
6834 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6835 {
6836 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6837 struct ata_queued_cmd *qc = ipr_cmd->qc;
6838 struct ipr_sata_port *sata_port = qc->ap->private_data;
6839 struct ipr_resource_entry *res = sata_port->res;
6840 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6841
6842 spin_lock(&ipr_cmd->hrrq->_lock);
6843 if (ipr_cmd->ioa_cfg->sis64)
6844 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6845 sizeof(struct ipr_ioasa_gata));
6846 else
6847 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6848 sizeof(struct ipr_ioasa_gata));
6849 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6850
6851 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6852 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6853
6854 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6855 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6856 else
6857 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6858 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6859 spin_unlock(&ipr_cmd->hrrq->_lock);
6860 ata_qc_complete(qc);
6861 }
6862
6863 /**
6864 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6865 * @ipr_cmd: ipr command struct
6866 * @qc: ATA queued command
6867 *
6868 **/
6869 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6870 struct ata_queued_cmd *qc)
6871 {
6872 u32 ioadl_flags = 0;
6873 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6874 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64;
6875 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6876 int len = qc->nbytes;
6877 struct scatterlist *sg;
6878 unsigned int si;
6879 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6880
6881 if (len == 0)
6882 return;
6883
6884 if (qc->dma_dir == DMA_TO_DEVICE) {
6885 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6886 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6887 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6888 ioadl_flags = IPR_IOADL_FLAGS_READ;
6889
6890 ioarcb->data_transfer_length = cpu_to_be32(len);
6891 ioarcb->ioadl_len =
6892 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6893 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6894 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64));
6895
6896 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6897 ioadl64->flags = cpu_to_be32(ioadl_flags);
6898 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6899 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6900
6901 last_ioadl64 = ioadl64;
6902 ioadl64++;
6903 }
6904
6905 if (likely(last_ioadl64))
6906 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6907 }
6908
6909 /**
6910 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6911 * @ipr_cmd: ipr command struct
6912 * @qc: ATA queued command
6913 *
6914 **/
6915 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6916 struct ata_queued_cmd *qc)
6917 {
6918 u32 ioadl_flags = 0;
6919 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6920 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6921 struct ipr_ioadl_desc *last_ioadl = NULL;
6922 int len = qc->nbytes;
6923 struct scatterlist *sg;
6924 unsigned int si;
6925
6926 if (len == 0)
6927 return;
6928
6929 if (qc->dma_dir == DMA_TO_DEVICE) {
6930 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6931 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6932 ioarcb->data_transfer_length = cpu_to_be32(len);
6933 ioarcb->ioadl_len =
6934 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6935 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6936 ioadl_flags = IPR_IOADL_FLAGS_READ;
6937 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6938 ioarcb->read_ioadl_len =
6939 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6940 }
6941
6942 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6943 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6944 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6945
6946 last_ioadl = ioadl;
6947 ioadl++;
6948 }
6949
6950 if (likely(last_ioadl))
6951 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6952 }
6953
6954 /**
6955 * ipr_qc_defer - Get a free ipr_cmd
6956 * @qc: queued command
6957 *
6958 * Return value:
6959 * 0 if success
6960 **/
6961 static int ipr_qc_defer(struct ata_queued_cmd *qc)
6962 {
6963 struct ata_port *ap = qc->ap;
6964 struct ipr_sata_port *sata_port = ap->private_data;
6965 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6966 struct ipr_cmnd *ipr_cmd;
6967 struct ipr_hrr_queue *hrrq;
6968 int hrrq_id;
6969
6970 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6971 hrrq = &ioa_cfg->hrrq[hrrq_id];
6972
6973 qc->lldd_task = NULL;
6974 spin_lock(&hrrq->_lock);
6975 if (unlikely(hrrq->ioa_is_dead)) {
6976 spin_unlock(&hrrq->_lock);
6977 return 0;
6978 }
6979
6980 if (unlikely(!hrrq->allow_cmds)) {
6981 spin_unlock(&hrrq->_lock);
6982 return ATA_DEFER_LINK;
6983 }
6984
6985 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6986 if (ipr_cmd == NULL) {
6987 spin_unlock(&hrrq->_lock);
6988 return ATA_DEFER_LINK;
6989 }
6990
6991 qc->lldd_task = ipr_cmd;
6992 spin_unlock(&hrrq->_lock);
6993 return 0;
6994 }
6995
6996 /**
6997 * ipr_qc_issue - Issue a SATA qc to a device
6998 * @qc: queued command
6999 *
7000 * Return value:
7001 * 0 if success
7002 **/
7003 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
7004 {
7005 struct ata_port *ap = qc->ap;
7006 struct ipr_sata_port *sata_port = ap->private_data;
7007 struct ipr_resource_entry *res = sata_port->res;
7008 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
7009 struct ipr_cmnd *ipr_cmd;
7010 struct ipr_ioarcb *ioarcb;
7011 struct ipr_ioarcb_ata_regs *regs;
7012
7013 if (qc->lldd_task == NULL)
7014 ipr_qc_defer(qc);
7015
7016 ipr_cmd = qc->lldd_task;
7017 if (ipr_cmd == NULL)
7018 return AC_ERR_SYSTEM;
7019
7020 qc->lldd_task = NULL;
7021 spin_lock(&ipr_cmd->hrrq->_lock);
7022 if (unlikely(!ipr_cmd->hrrq->allow_cmds ||
7023 ipr_cmd->hrrq->ioa_is_dead)) {
7024 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7025 spin_unlock(&ipr_cmd->hrrq->_lock);
7026 return AC_ERR_SYSTEM;
7027 }
7028
7029 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
7030 ioarcb = &ipr_cmd->ioarcb;
7031
7032 if (ioa_cfg->sis64) {
7033 regs = &ipr_cmd->i.ata_ioadl.regs;
7034 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
7035 } else
7036 regs = &ioarcb->u.add_data.u.regs;
7037
7038 memset(regs, 0, sizeof(*regs));
7039 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
7040
7041 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
7042 ipr_cmd->qc = qc;
7043 ipr_cmd->done = ipr_sata_done;
7044 ipr_cmd->ioarcb.res_handle = res->res_handle;
7045 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
7046 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
7047 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
7048 ipr_cmd->dma_use_sg = qc->n_elem;
7049
7050 if (ioa_cfg->sis64)
7051 ipr_build_ata_ioadl64(ipr_cmd, qc);
7052 else
7053 ipr_build_ata_ioadl(ipr_cmd, qc);
7054
7055 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
7056 ipr_copy_sata_tf(regs, &qc->tf);
7057 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
7058 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
7059
7060 switch (qc->tf.protocol) {
7061 case ATA_PROT_NODATA:
7062 case ATA_PROT_PIO:
7063 break;
7064
7065 case ATA_PROT_DMA:
7066 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
7067 break;
7068
7069 case ATAPI_PROT_PIO:
7070 case ATAPI_PROT_NODATA:
7071 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
7072 break;
7073
7074 case ATAPI_PROT_DMA:
7075 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
7076 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
7077 break;
7078
7079 default:
7080 WARN_ON(1);
7081 spin_unlock(&ipr_cmd->hrrq->_lock);
7082 return AC_ERR_INVALID;
7083 }
7084
7085 ipr_send_command(ipr_cmd);
7086 spin_unlock(&ipr_cmd->hrrq->_lock);
7087
7088 return 0;
7089 }
7090
7091 /**
7092 * ipr_qc_fill_rtf - Read result TF
7093 * @qc: ATA queued command
7094 *
7095 * Return value:
7096 * true
7097 **/
7098 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
7099 {
7100 struct ipr_sata_port *sata_port = qc->ap->private_data;
7101 struct ipr_ioasa_gata *g = &sata_port->ioasa;
7102 struct ata_taskfile *tf = &qc->result_tf;
7103
7104 tf->feature = g->error;
7105 tf->nsect = g->nsect;
7106 tf->lbal = g->lbal;
7107 tf->lbam = g->lbam;
7108 tf->lbah = g->lbah;
7109 tf->device = g->device;
7110 tf->command = g->status;
7111 tf->hob_nsect = g->hob_nsect;
7112 tf->hob_lbal = g->hob_lbal;
7113 tf->hob_lbam = g->hob_lbam;
7114 tf->hob_lbah = g->hob_lbah;
7115
7116 return true;
7117 }
7118
7119 static struct ata_port_operations ipr_sata_ops = {
7120 .phy_reset = ipr_ata_phy_reset,
7121 .hardreset = ipr_sata_reset,
7122 .post_internal_cmd = ipr_ata_post_internal,
7123 .qc_prep = ata_noop_qc_prep,
7124 .qc_defer = ipr_qc_defer,
7125 .qc_issue = ipr_qc_issue,
7126 .qc_fill_rtf = ipr_qc_fill_rtf,
7127 .port_start = ata_sas_port_start,
7128 .port_stop = ata_sas_port_stop
7129 };
7130
7131 static struct ata_port_info sata_port_info = {
7132 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
7133 ATA_FLAG_SAS_HOST,
7134 .pio_mask = ATA_PIO4_ONLY,
7135 .mwdma_mask = ATA_MWDMA2,
7136 .udma_mask = ATA_UDMA6,
7137 .port_ops = &ipr_sata_ops
7138 };
7139
7140 #ifdef CONFIG_PPC_PSERIES
7141 static const u16 ipr_blocked_processors[] = {
7142 PVR_NORTHSTAR,
7143 PVR_PULSAR,
7144 PVR_POWER4,
7145 PVR_ICESTAR,
7146 PVR_SSTAR,
7147 PVR_POWER4p,
7148 PVR_630,
7149 PVR_630p
7150 };
7151
7152 /**
7153 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
7154 * @ioa_cfg: ioa cfg struct
7155 *
7156 * Adapters that use Gemstone revision < 3.1 do not work reliably on
7157 * certain pSeries hardware. This function determines if the given
7158 * adapter is in one of these confgurations or not.
7159 *
7160 * Return value:
7161 * 1 if adapter is not supported / 0 if adapter is supported
7162 **/
7163 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
7164 {
7165 int i;
7166
7167 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
7168 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) {
7169 if (pvr_version_is(ipr_blocked_processors[i]))
7170 return 1;
7171 }
7172 }
7173 return 0;
7174 }
7175 #else
7176 #define ipr_invalid_adapter(ioa_cfg) 0
7177 #endif
7178
7179 /**
7180 * ipr_ioa_bringdown_done - IOA bring down completion.
7181 * @ipr_cmd: ipr command struct
7182 *
7183 * This function processes the completion of an adapter bring down.
7184 * It wakes any reset sleepers.
7185 *
7186 * Return value:
7187 * IPR_RC_JOB_RETURN
7188 **/
7189 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
7190 {
7191 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7192 int i;
7193
7194 ENTER;
7195 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
7196 ipr_trace;
7197 ioa_cfg->scsi_unblock = 1;
7198 schedule_work(&ioa_cfg->work_q);
7199 }
7200
7201 ioa_cfg->in_reset_reload = 0;
7202 ioa_cfg->reset_retries = 0;
7203 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
7204 spin_lock(&ioa_cfg->hrrq[i]._lock);
7205 ioa_cfg->hrrq[i].ioa_is_dead = 1;
7206 spin_unlock(&ioa_cfg->hrrq[i]._lock);
7207 }
7208 wmb();
7209
7210 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7211 wake_up_all(&ioa_cfg->reset_wait_q);
7212 LEAVE;
7213
7214 return IPR_RC_JOB_RETURN;
7215 }
7216
7217 /**
7218 * ipr_ioa_reset_done - IOA reset completion.
7219 * @ipr_cmd: ipr command struct
7220 *
7221 * This function processes the completion of an adapter reset.
7222 * It schedules any necessary mid-layer add/removes and
7223 * wakes any reset sleepers.
7224 *
7225 * Return value:
7226 * IPR_RC_JOB_RETURN
7227 **/
7228 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
7229 {
7230 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7231 struct ipr_resource_entry *res;
7232 int j;
7233
7234 ENTER;
7235 ioa_cfg->in_reset_reload = 0;
7236 for (j = 0; j < ioa_cfg->hrrq_num; j++) {
7237 spin_lock(&ioa_cfg->hrrq[j]._lock);
7238 ioa_cfg->hrrq[j].allow_cmds = 1;
7239 spin_unlock(&ioa_cfg->hrrq[j]._lock);
7240 }
7241 wmb();
7242 ioa_cfg->reset_cmd = NULL;
7243 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
7244
7245 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
7246 if (res->add_to_ml || res->del_from_ml) {
7247 ipr_trace;
7248 break;
7249 }
7250 }
7251 schedule_work(&ioa_cfg->work_q);
7252
7253 for (j = 0; j < IPR_NUM_HCAMS; j++) {
7254 list_del_init(&ioa_cfg->hostrcb[j]->queue);
7255 if (j < IPR_NUM_LOG_HCAMS)
7256 ipr_send_hcam(ioa_cfg,
7257 IPR_HCAM_CDB_OP_CODE_LOG_DATA,
7258 ioa_cfg->hostrcb[j]);
7259 else
7260 ipr_send_hcam(ioa_cfg,
7261 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
7262 ioa_cfg->hostrcb[j]);
7263 }
7264
7265 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
7266 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
7267
7268 ioa_cfg->reset_retries = 0;
7269 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7270 wake_up_all(&ioa_cfg->reset_wait_q);
7271
7272 ioa_cfg->scsi_unblock = 1;
7273 schedule_work(&ioa_cfg->work_q);
7274 LEAVE;
7275 return IPR_RC_JOB_RETURN;
7276 }
7277
7278 /**
7279 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
7280 * @supported_dev: supported device struct
7281 * @vpids: vendor product id struct
7282 *
7283 * Return value:
7284 * none
7285 **/
7286 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
7287 struct ipr_std_inq_vpids *vpids)
7288 {
7289 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
7290 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
7291 supported_dev->num_records = 1;
7292 supported_dev->data_length =
7293 cpu_to_be16(sizeof(struct ipr_supported_device));
7294 supported_dev->reserved = 0;
7295 }
7296
7297 /**
7298 * ipr_set_supported_devs - Send Set Supported Devices for a device
7299 * @ipr_cmd: ipr command struct
7300 *
7301 * This function sends a Set Supported Devices to the adapter
7302 *
7303 * Return value:
7304 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7305 **/
7306 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
7307 {
7308 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7309 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
7310 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7311 struct ipr_resource_entry *res = ipr_cmd->u.res;
7312
7313 ipr_cmd->job_step = ipr_ioa_reset_done;
7314
7315 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
7316 if (!ipr_is_scsi_disk(res))
7317 continue;
7318
7319 ipr_cmd->u.res = res;
7320 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
7321
7322 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7323 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7324 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7325
7326 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
7327 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
7328 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
7329 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
7330
7331 ipr_init_ioadl(ipr_cmd,
7332 ioa_cfg->vpd_cbs_dma +
7333 offsetof(struct ipr_misc_cbs, supp_dev),
7334 sizeof(struct ipr_supported_device),
7335 IPR_IOADL_FLAGS_WRITE_LAST);
7336
7337 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7338 IPR_SET_SUP_DEVICE_TIMEOUT);
7339
7340 if (!ioa_cfg->sis64)
7341 ipr_cmd->job_step = ipr_set_supported_devs;
7342 LEAVE;
7343 return IPR_RC_JOB_RETURN;
7344 }
7345
7346 LEAVE;
7347 return IPR_RC_JOB_CONTINUE;
7348 }
7349
7350 /**
7351 * ipr_get_mode_page - Locate specified mode page
7352 * @mode_pages: mode page buffer
7353 * @page_code: page code to find
7354 * @len: minimum required length for mode page
7355 *
7356 * Return value:
7357 * pointer to mode page / NULL on failure
7358 **/
7359 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
7360 u32 page_code, u32 len)
7361 {
7362 struct ipr_mode_page_hdr *mode_hdr;
7363 u32 page_length;
7364 u32 length;
7365
7366 if (!mode_pages || (mode_pages->hdr.length == 0))
7367 return NULL;
7368
7369 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
7370 mode_hdr = (struct ipr_mode_page_hdr *)
7371 (mode_pages->data + mode_pages->hdr.block_desc_len);
7372
7373 while (length) {
7374 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
7375 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
7376 return mode_hdr;
7377 break;
7378 } else {
7379 page_length = (sizeof(struct ipr_mode_page_hdr) +
7380 mode_hdr->page_length);
7381 length -= page_length;
7382 mode_hdr = (struct ipr_mode_page_hdr *)
7383 ((unsigned long)mode_hdr + page_length);
7384 }
7385 }
7386 return NULL;
7387 }
7388
7389 /**
7390 * ipr_check_term_power - Check for term power errors
7391 * @ioa_cfg: ioa config struct
7392 * @mode_pages: IOAFP mode pages buffer
7393 *
7394 * Check the IOAFP's mode page 28 for term power errors
7395 *
7396 * Return value:
7397 * nothing
7398 **/
7399 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
7400 struct ipr_mode_pages *mode_pages)
7401 {
7402 int i;
7403 int entry_length;
7404 struct ipr_dev_bus_entry *bus;
7405 struct ipr_mode_page28 *mode_page;
7406
7407 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7408 sizeof(struct ipr_mode_page28));
7409
7410 entry_length = mode_page->entry_length;
7411
7412 bus = mode_page->bus;
7413
7414 for (i = 0; i < mode_page->num_entries; i++) {
7415 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
7416 dev_err(&ioa_cfg->pdev->dev,
7417 "Term power is absent on scsi bus %d\n",
7418 bus->res_addr.bus);
7419 }
7420
7421 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
7422 }
7423 }
7424
7425 /**
7426 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
7427 * @ioa_cfg: ioa config struct
7428 *
7429 * Looks through the config table checking for SES devices. If
7430 * the SES device is in the SES table indicating a maximum SCSI
7431 * bus speed, the speed is limited for the bus.
7432 *
7433 * Return value:
7434 * none
7435 **/
7436 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
7437 {
7438 u32 max_xfer_rate;
7439 int i;
7440
7441 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7442 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
7443 ioa_cfg->bus_attr[i].bus_width);
7444
7445 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
7446 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
7447 }
7448 }
7449
7450 /**
7451 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
7452 * @ioa_cfg: ioa config struct
7453 * @mode_pages: mode page 28 buffer
7454 *
7455 * Updates mode page 28 based on driver configuration
7456 *
7457 * Return value:
7458 * none
7459 **/
7460 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
7461 struct ipr_mode_pages *mode_pages)
7462 {
7463 int i, entry_length;
7464 struct ipr_dev_bus_entry *bus;
7465 struct ipr_bus_attributes *bus_attr;
7466 struct ipr_mode_page28 *mode_page;
7467
7468 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7469 sizeof(struct ipr_mode_page28));
7470
7471 entry_length = mode_page->entry_length;
7472
7473 /* Loop for each device bus entry */
7474 for (i = 0, bus = mode_page->bus;
7475 i < mode_page->num_entries;
7476 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
7477 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
7478 dev_err(&ioa_cfg->pdev->dev,
7479 "Invalid resource address reported: 0x%08X\n",
7480 IPR_GET_PHYS_LOC(bus->res_addr));
7481 continue;
7482 }
7483
7484 bus_attr = &ioa_cfg->bus_attr[i];
7485 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
7486 bus->bus_width = bus_attr->bus_width;
7487 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
7488 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
7489 if (bus_attr->qas_enabled)
7490 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
7491 else
7492 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
7493 }
7494 }
7495
7496 /**
7497 * ipr_build_mode_select - Build a mode select command
7498 * @ipr_cmd: ipr command struct
7499 * @res_handle: resource handle to send command to
7500 * @parm: Byte 2 of Mode Sense command
7501 * @dma_addr: DMA buffer address
7502 * @xfer_len: data transfer length
7503 *
7504 * Return value:
7505 * none
7506 **/
7507 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
7508 __be32 res_handle, u8 parm,
7509 dma_addr_t dma_addr, u8 xfer_len)
7510 {
7511 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7512
7513 ioarcb->res_handle = res_handle;
7514 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7515 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7516 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
7517 ioarcb->cmd_pkt.cdb[1] = parm;
7518 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7519
7520 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
7521 }
7522
7523 /**
7524 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
7525 * @ipr_cmd: ipr command struct
7526 *
7527 * This function sets up the SCSI bus attributes and sends
7528 * a Mode Select for Page 28 to activate them.
7529 *
7530 * Return value:
7531 * IPR_RC_JOB_RETURN
7532 **/
7533 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
7534 {
7535 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7536 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7537 int length;
7538
7539 ENTER;
7540 ipr_scsi_bus_speed_limit(ioa_cfg);
7541 ipr_check_term_power(ioa_cfg, mode_pages);
7542 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
7543 length = mode_pages->hdr.length + 1;
7544 mode_pages->hdr.length = 0;
7545
7546 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7547 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7548 length);
7549
7550 ipr_cmd->job_step = ipr_set_supported_devs;
7551 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7552 struct ipr_resource_entry, queue);
7553 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7554
7555 LEAVE;
7556 return IPR_RC_JOB_RETURN;
7557 }
7558
7559 /**
7560 * ipr_build_mode_sense - Builds a mode sense command
7561 * @ipr_cmd: ipr command struct
7562 * @res: resource entry struct
7563 * @parm: Byte 2 of mode sense command
7564 * @dma_addr: DMA address of mode sense buffer
7565 * @xfer_len: Size of DMA buffer
7566 *
7567 * Return value:
7568 * none
7569 **/
7570 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
7571 __be32 res_handle,
7572 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
7573 {
7574 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7575
7576 ioarcb->res_handle = res_handle;
7577 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
7578 ioarcb->cmd_pkt.cdb[2] = parm;
7579 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7580 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7581
7582 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7583 }
7584
7585 /**
7586 * ipr_reset_cmd_failed - Handle failure of IOA reset command
7587 * @ipr_cmd: ipr command struct
7588 *
7589 * This function handles the failure of an IOA bringup command.
7590 *
7591 * Return value:
7592 * IPR_RC_JOB_RETURN
7593 **/
7594 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
7595 {
7596 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7597 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7598
7599 dev_err(&ioa_cfg->pdev->dev,
7600 "0x%02X failed with IOASC: 0x%08X\n",
7601 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
7602
7603 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7604 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7605 return IPR_RC_JOB_RETURN;
7606 }
7607
7608 /**
7609 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
7610 * @ipr_cmd: ipr command struct
7611 *
7612 * This function handles the failure of a Mode Sense to the IOAFP.
7613 * Some adapters do not handle all mode pages.
7614 *
7615 * Return value:
7616 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7617 **/
7618 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
7619 {
7620 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7621 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7622
7623 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7624 ipr_cmd->job_step = ipr_set_supported_devs;
7625 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7626 struct ipr_resource_entry, queue);
7627 return IPR_RC_JOB_CONTINUE;
7628 }
7629
7630 return ipr_reset_cmd_failed(ipr_cmd);
7631 }
7632
7633 /**
7634 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
7635 * @ipr_cmd: ipr command struct
7636 *
7637 * This function send a Page 28 mode sense to the IOA to
7638 * retrieve SCSI bus attributes.
7639 *
7640 * Return value:
7641 * IPR_RC_JOB_RETURN
7642 **/
7643 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
7644 {
7645 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7646
7647 ENTER;
7648 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7649 0x28, ioa_cfg->vpd_cbs_dma +
7650 offsetof(struct ipr_misc_cbs, mode_pages),
7651 sizeof(struct ipr_mode_pages));
7652
7653 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
7654 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
7655
7656 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7657
7658 LEAVE;
7659 return IPR_RC_JOB_RETURN;
7660 }
7661
7662 /**
7663 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
7664 * @ipr_cmd: ipr command struct
7665 *
7666 * This function enables dual IOA RAID support if possible.
7667 *
7668 * Return value:
7669 * IPR_RC_JOB_RETURN
7670 **/
7671 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
7672 {
7673 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7674 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7675 struct ipr_mode_page24 *mode_page;
7676 int length;
7677
7678 ENTER;
7679 mode_page = ipr_get_mode_page(mode_pages, 0x24,
7680 sizeof(struct ipr_mode_page24));
7681
7682 if (mode_page)
7683 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
7684
7685 length = mode_pages->hdr.length + 1;
7686 mode_pages->hdr.length = 0;
7687
7688 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7689 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7690 length);
7691
7692 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7693 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7694
7695 LEAVE;
7696 return IPR_RC_JOB_RETURN;
7697 }
7698
7699 /**
7700 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
7701 * @ipr_cmd: ipr command struct
7702 *
7703 * This function handles the failure of a Mode Sense to the IOAFP.
7704 * Some adapters do not handle all mode pages.
7705 *
7706 * Return value:
7707 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7708 **/
7709 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
7710 {
7711 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7712
7713 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7714 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7715 return IPR_RC_JOB_CONTINUE;
7716 }
7717
7718 return ipr_reset_cmd_failed(ipr_cmd);
7719 }
7720
7721 /**
7722 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
7723 * @ipr_cmd: ipr command struct
7724 *
7725 * This function send a mode sense to the IOA to retrieve
7726 * the IOA Advanced Function Control mode page.
7727 *
7728 * Return value:
7729 * IPR_RC_JOB_RETURN
7730 **/
7731 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
7732 {
7733 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7734
7735 ENTER;
7736 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7737 0x24, ioa_cfg->vpd_cbs_dma +
7738 offsetof(struct ipr_misc_cbs, mode_pages),
7739 sizeof(struct ipr_mode_pages));
7740
7741 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
7742 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
7743
7744 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7745
7746 LEAVE;
7747 return IPR_RC_JOB_RETURN;
7748 }
7749
7750 /**
7751 * ipr_init_res_table - Initialize the resource table
7752 * @ipr_cmd: ipr command struct
7753 *
7754 * This function looks through the existing resource table, comparing
7755 * it with the config table. This function will take care of old/new
7756 * devices and schedule adding/removing them from the mid-layer
7757 * as appropriate.
7758 *
7759 * Return value:
7760 * IPR_RC_JOB_CONTINUE
7761 **/
7762 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
7763 {
7764 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7765 struct ipr_resource_entry *res, *temp;
7766 struct ipr_config_table_entry_wrapper cfgtew;
7767 int entries, found, flag, i;
7768 LIST_HEAD(old_res);
7769
7770 ENTER;
7771 if (ioa_cfg->sis64)
7772 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
7773 else
7774 flag = ioa_cfg->u.cfg_table->hdr.flags;
7775
7776 if (flag & IPR_UCODE_DOWNLOAD_REQ)
7777 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
7778
7779 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
7780 list_move_tail(&res->queue, &old_res);
7781
7782 if (ioa_cfg->sis64)
7783 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
7784 else
7785 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
7786
7787 for (i = 0; i < entries; i++) {
7788 if (ioa_cfg->sis64)
7789 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
7790 else
7791 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
7792 found = 0;
7793
7794 list_for_each_entry_safe(res, temp, &old_res, queue) {
7795 if (ipr_is_same_device(res, &cfgtew)) {
7796 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7797 found = 1;
7798 break;
7799 }
7800 }
7801
7802 if (!found) {
7803 if (list_empty(&ioa_cfg->free_res_q)) {
7804 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
7805 break;
7806 }
7807
7808 found = 1;
7809 res = list_entry(ioa_cfg->free_res_q.next,
7810 struct ipr_resource_entry, queue);
7811 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7812 ipr_init_res_entry(res, &cfgtew);
7813 res->add_to_ml = 1;
7814 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
7815 res->sdev->allow_restart = 1;
7816
7817 if (found)
7818 ipr_update_res_entry(res, &cfgtew);
7819 }
7820
7821 list_for_each_entry_safe(res, temp, &old_res, queue) {
7822 if (res->sdev) {
7823 res->del_from_ml = 1;
7824 res->res_handle = IPR_INVALID_RES_HANDLE;
7825 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7826 }
7827 }
7828
7829 list_for_each_entry_safe(res, temp, &old_res, queue) {
7830 ipr_clear_res_target(res);
7831 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
7832 }
7833
7834 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7835 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
7836 else
7837 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7838
7839 LEAVE;
7840 return IPR_RC_JOB_CONTINUE;
7841 }
7842
7843 /**
7844 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
7845 * @ipr_cmd: ipr command struct
7846 *
7847 * This function sends a Query IOA Configuration command
7848 * to the adapter to retrieve the IOA configuration table.
7849 *
7850 * Return value:
7851 * IPR_RC_JOB_RETURN
7852 **/
7853 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
7854 {
7855 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7856 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7857 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7858 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7859
7860 ENTER;
7861 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7862 ioa_cfg->dual_raid = 1;
7863 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7864 ucode_vpd->major_release, ucode_vpd->card_type,
7865 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7866 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7867 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7868
7869 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7870 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7871 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7872 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7873
7874 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7875 IPR_IOADL_FLAGS_READ_LAST);
7876
7877 ipr_cmd->job_step = ipr_init_res_table;
7878
7879 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7880
7881 LEAVE;
7882 return IPR_RC_JOB_RETURN;
7883 }
7884
7885 static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd)
7886 {
7887 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7888
7889 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT)
7890 return IPR_RC_JOB_CONTINUE;
7891
7892 return ipr_reset_cmd_failed(ipr_cmd);
7893 }
7894
7895 static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd,
7896 __be32 res_handle, u8 sa_code)
7897 {
7898 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7899
7900 ioarcb->res_handle = res_handle;
7901 ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION;
7902 ioarcb->cmd_pkt.cdb[1] = sa_code;
7903 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7904 }
7905
7906 /**
7907 * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service
7908 * action
7909 *
7910 * Return value:
7911 * none
7912 **/
7913 static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd)
7914 {
7915 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7916 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7917 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7918
7919 ENTER;
7920
7921 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7922
7923 if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) {
7924 ipr_build_ioa_service_action(ipr_cmd,
7925 cpu_to_be32(IPR_IOA_RES_HANDLE),
7926 IPR_IOA_SA_CHANGE_CACHE_PARAMS);
7927
7928 ioarcb->cmd_pkt.cdb[2] = 0x40;
7929
7930 ipr_cmd->job_step_failed = ipr_ioa_service_action_failed;
7931 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7932 IPR_SET_SUP_DEVICE_TIMEOUT);
7933
7934 LEAVE;
7935 return IPR_RC_JOB_RETURN;
7936 }
7937
7938 LEAVE;
7939 return IPR_RC_JOB_CONTINUE;
7940 }
7941
7942 /**
7943 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7944 * @ipr_cmd: ipr command struct
7945 *
7946 * This utility function sends an inquiry to the adapter.
7947 *
7948 * Return value:
7949 * none
7950 **/
7951 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7952 dma_addr_t dma_addr, u8 xfer_len)
7953 {
7954 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7955
7956 ENTER;
7957 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7958 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7959
7960 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7961 ioarcb->cmd_pkt.cdb[1] = flags;
7962 ioarcb->cmd_pkt.cdb[2] = page;
7963 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7964
7965 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7966
7967 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7968 LEAVE;
7969 }
7970
7971 /**
7972 * ipr_inquiry_page_supported - Is the given inquiry page supported
7973 * @page0: inquiry page 0 buffer
7974 * @page: page code.
7975 *
7976 * This function determines if the specified inquiry page is supported.
7977 *
7978 * Return value:
7979 * 1 if page is supported / 0 if not
7980 **/
7981 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7982 {
7983 int i;
7984
7985 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7986 if (page0->page[i] == page)
7987 return 1;
7988
7989 return 0;
7990 }
7991
7992 /**
7993 * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter.
7994 * @ipr_cmd: ipr command struct
7995 *
7996 * This function sends a Page 0xC4 inquiry to the adapter
7997 * to retrieve software VPD information.
7998 *
7999 * Return value:
8000 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8001 **/
8002 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd)
8003 {
8004 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8005 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
8006 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
8007
8008 ENTER;
8009 ipr_cmd->job_step = ipr_ioafp_set_caching_parameters;
8010 memset(pageC4, 0, sizeof(*pageC4));
8011
8012 if (ipr_inquiry_page_supported(page0, 0xC4)) {
8013 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4,
8014 (ioa_cfg->vpd_cbs_dma
8015 + offsetof(struct ipr_misc_cbs,
8016 pageC4_data)),
8017 sizeof(struct ipr_inquiry_pageC4));
8018 return IPR_RC_JOB_RETURN;
8019 }
8020
8021 LEAVE;
8022 return IPR_RC_JOB_CONTINUE;
8023 }
8024
8025 /**
8026 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
8027 * @ipr_cmd: ipr command struct
8028 *
8029 * This function sends a Page 0xD0 inquiry to the adapter
8030 * to retrieve adapter capabilities.
8031 *
8032 * Return value:
8033 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8034 **/
8035 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
8036 {
8037 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8038 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
8039 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
8040
8041 ENTER;
8042 ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry;
8043 memset(cap, 0, sizeof(*cap));
8044
8045 if (ipr_inquiry_page_supported(page0, 0xD0)) {
8046 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
8047 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
8048 sizeof(struct ipr_inquiry_cap));
8049 return IPR_RC_JOB_RETURN;
8050 }
8051
8052 LEAVE;
8053 return IPR_RC_JOB_CONTINUE;
8054 }
8055
8056 /**
8057 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
8058 * @ipr_cmd: ipr command struct
8059 *
8060 * This function sends a Page 3 inquiry to the adapter
8061 * to retrieve software VPD information.
8062 *
8063 * Return value:
8064 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8065 **/
8066 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
8067 {
8068 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8069
8070 ENTER;
8071
8072 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
8073
8074 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
8075 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
8076 sizeof(struct ipr_inquiry_page3));
8077
8078 LEAVE;
8079 return IPR_RC_JOB_RETURN;
8080 }
8081
8082 /**
8083 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
8084 * @ipr_cmd: ipr command struct
8085 *
8086 * This function sends a Page 0 inquiry to the adapter
8087 * to retrieve supported inquiry pages.
8088 *
8089 * Return value:
8090 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8091 **/
8092 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
8093 {
8094 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8095 char type[5];
8096
8097 ENTER;
8098
8099 /* Grab the type out of the VPD and store it away */
8100 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
8101 type[4] = '\0';
8102 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
8103
8104 if (ipr_invalid_adapter(ioa_cfg)) {
8105 dev_err(&ioa_cfg->pdev->dev,
8106 "Adapter not supported in this hardware configuration.\n");
8107
8108 if (!ipr_testmode) {
8109 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
8110 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8111 list_add_tail(&ipr_cmd->queue,
8112 &ioa_cfg->hrrq->hrrq_free_q);
8113 return IPR_RC_JOB_RETURN;
8114 }
8115 }
8116
8117 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
8118
8119 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
8120 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
8121 sizeof(struct ipr_inquiry_page0));
8122
8123 LEAVE;
8124 return IPR_RC_JOB_RETURN;
8125 }
8126
8127 /**
8128 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
8129 * @ipr_cmd: ipr command struct
8130 *
8131 * This function sends a standard inquiry to the adapter.
8132 *
8133 * Return value:
8134 * IPR_RC_JOB_RETURN
8135 **/
8136 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
8137 {
8138 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8139
8140 ENTER;
8141 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
8142
8143 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
8144 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
8145 sizeof(struct ipr_ioa_vpd));
8146
8147 LEAVE;
8148 return IPR_RC_JOB_RETURN;
8149 }
8150
8151 /**
8152 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
8153 * @ipr_cmd: ipr command struct
8154 *
8155 * This function send an Identify Host Request Response Queue
8156 * command to establish the HRRQ with the adapter.
8157 *
8158 * Return value:
8159 * IPR_RC_JOB_RETURN
8160 **/
8161 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
8162 {
8163 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8164 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
8165 struct ipr_hrr_queue *hrrq;
8166
8167 ENTER;
8168 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
8169 if (ioa_cfg->identify_hrrq_index == 0)
8170 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
8171
8172 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) {
8173 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index];
8174
8175 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
8176 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8177
8178 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8179 if (ioa_cfg->sis64)
8180 ioarcb->cmd_pkt.cdb[1] = 0x1;
8181
8182 if (ioa_cfg->nvectors == 1)
8183 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE;
8184 else
8185 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE;
8186
8187 ioarcb->cmd_pkt.cdb[2] =
8188 ((u64) hrrq->host_rrq_dma >> 24) & 0xff;
8189 ioarcb->cmd_pkt.cdb[3] =
8190 ((u64) hrrq->host_rrq_dma >> 16) & 0xff;
8191 ioarcb->cmd_pkt.cdb[4] =
8192 ((u64) hrrq->host_rrq_dma >> 8) & 0xff;
8193 ioarcb->cmd_pkt.cdb[5] =
8194 ((u64) hrrq->host_rrq_dma) & 0xff;
8195 ioarcb->cmd_pkt.cdb[7] =
8196 ((sizeof(u32) * hrrq->size) >> 8) & 0xff;
8197 ioarcb->cmd_pkt.cdb[8] =
8198 (sizeof(u32) * hrrq->size) & 0xff;
8199
8200 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
8201 ioarcb->cmd_pkt.cdb[9] =
8202 ioa_cfg->identify_hrrq_index;
8203
8204 if (ioa_cfg->sis64) {
8205 ioarcb->cmd_pkt.cdb[10] =
8206 ((u64) hrrq->host_rrq_dma >> 56) & 0xff;
8207 ioarcb->cmd_pkt.cdb[11] =
8208 ((u64) hrrq->host_rrq_dma >> 48) & 0xff;
8209 ioarcb->cmd_pkt.cdb[12] =
8210 ((u64) hrrq->host_rrq_dma >> 40) & 0xff;
8211 ioarcb->cmd_pkt.cdb[13] =
8212 ((u64) hrrq->host_rrq_dma >> 32) & 0xff;
8213 }
8214
8215 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
8216 ioarcb->cmd_pkt.cdb[14] =
8217 ioa_cfg->identify_hrrq_index;
8218
8219 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8220 IPR_INTERNAL_TIMEOUT);
8221
8222 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num)
8223 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8224
8225 LEAVE;
8226 return IPR_RC_JOB_RETURN;
8227 }
8228
8229 LEAVE;
8230 return IPR_RC_JOB_CONTINUE;
8231 }
8232
8233 /**
8234 * ipr_reset_timer_done - Adapter reset timer function
8235 * @ipr_cmd: ipr command struct
8236 *
8237 * Description: This function is used in adapter reset processing
8238 * for timing events. If the reset_cmd pointer in the IOA
8239 * config struct is not this adapter's we are doing nested
8240 * resets and fail_all_ops will take care of freeing the
8241 * command block.
8242 *
8243 * Return value:
8244 * none
8245 **/
8246 static void ipr_reset_timer_done(struct timer_list *t)
8247 {
8248 struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
8249 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8250 unsigned long lock_flags = 0;
8251
8252 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8253
8254 if (ioa_cfg->reset_cmd == ipr_cmd) {
8255 list_del(&ipr_cmd->queue);
8256 ipr_cmd->done(ipr_cmd);
8257 }
8258
8259 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8260 }
8261
8262 /**
8263 * ipr_reset_start_timer - Start a timer for adapter reset job
8264 * @ipr_cmd: ipr command struct
8265 * @timeout: timeout value
8266 *
8267 * Description: This function is used in adapter reset processing
8268 * for timing events. If the reset_cmd pointer in the IOA
8269 * config struct is not this adapter's we are doing nested
8270 * resets and fail_all_ops will take care of freeing the
8271 * command block.
8272 *
8273 * Return value:
8274 * none
8275 **/
8276 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
8277 unsigned long timeout)
8278 {
8279
8280 ENTER;
8281 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8282 ipr_cmd->done = ipr_reset_ioa_job;
8283
8284 ipr_cmd->timer.expires = jiffies + timeout;
8285 ipr_cmd->timer.function = ipr_reset_timer_done;
8286 add_timer(&ipr_cmd->timer);
8287 }
8288
8289 /**
8290 * ipr_init_ioa_mem - Initialize ioa_cfg control block
8291 * @ioa_cfg: ioa cfg struct
8292 *
8293 * Return value:
8294 * nothing
8295 **/
8296 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
8297 {
8298 struct ipr_hrr_queue *hrrq;
8299
8300 for_each_hrrq(hrrq, ioa_cfg) {
8301 spin_lock(&hrrq->_lock);
8302 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size);
8303
8304 /* Initialize Host RRQ pointers */
8305 hrrq->hrrq_start = hrrq->host_rrq;
8306 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1];
8307 hrrq->hrrq_curr = hrrq->hrrq_start;
8308 hrrq->toggle_bit = 1;
8309 spin_unlock(&hrrq->_lock);
8310 }
8311 wmb();
8312
8313 ioa_cfg->identify_hrrq_index = 0;
8314 if (ioa_cfg->hrrq_num == 1)
8315 atomic_set(&ioa_cfg->hrrq_index, 0);
8316 else
8317 atomic_set(&ioa_cfg->hrrq_index, 1);
8318
8319 /* Zero out config table */
8320 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
8321 }
8322
8323 /**
8324 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
8325 * @ipr_cmd: ipr command struct
8326 *
8327 * Return value:
8328 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8329 **/
8330 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
8331 {
8332 unsigned long stage, stage_time;
8333 u32 feedback;
8334 volatile u32 int_reg;
8335 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8336 u64 maskval = 0;
8337
8338 feedback = readl(ioa_cfg->regs.init_feedback_reg);
8339 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
8340 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
8341
8342 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
8343
8344 /* sanity check the stage_time value */
8345 if (stage_time == 0)
8346 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
8347 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
8348 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
8349 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
8350 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
8351
8352 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
8353 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
8354 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8355 stage_time = ioa_cfg->transop_timeout;
8356 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8357 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
8358 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8359 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8360 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8361 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8362 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
8363 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
8364 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8365 return IPR_RC_JOB_CONTINUE;
8366 }
8367 }
8368
8369 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
8370 ipr_cmd->timer.function = ipr_oper_timeout;
8371 ipr_cmd->done = ipr_reset_ioa_job;
8372 add_timer(&ipr_cmd->timer);
8373
8374 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8375
8376 return IPR_RC_JOB_RETURN;
8377 }
8378
8379 /**
8380 * ipr_reset_enable_ioa - Enable the IOA following a reset.
8381 * @ipr_cmd: ipr command struct
8382 *
8383 * This function reinitializes some control blocks and
8384 * enables destructive diagnostics on the adapter.
8385 *
8386 * Return value:
8387 * IPR_RC_JOB_RETURN
8388 **/
8389 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
8390 {
8391 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8392 volatile u32 int_reg;
8393 volatile u64 maskval;
8394 int i;
8395
8396 ENTER;
8397 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8398 ipr_init_ioa_mem(ioa_cfg);
8399
8400 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8401 spin_lock(&ioa_cfg->hrrq[i]._lock);
8402 ioa_cfg->hrrq[i].allow_interrupts = 1;
8403 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8404 }
8405 if (ioa_cfg->sis64) {
8406 /* Set the adapter to the correct endian mode. */
8407 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8408 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8409 }
8410
8411 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8412
8413 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8414 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
8415 ioa_cfg->regs.clr_interrupt_mask_reg32);
8416 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8417 return IPR_RC_JOB_CONTINUE;
8418 }
8419
8420 /* Enable destructive diagnostics on IOA */
8421 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
8422
8423 if (ioa_cfg->sis64) {
8424 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8425 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
8426 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
8427 } else
8428 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
8429
8430 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8431
8432 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
8433
8434 if (ioa_cfg->sis64) {
8435 ipr_cmd->job_step = ipr_reset_next_stage;
8436 return IPR_RC_JOB_CONTINUE;
8437 }
8438
8439 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
8440 ipr_cmd->timer.function = ipr_oper_timeout;
8441 ipr_cmd->done = ipr_reset_ioa_job;
8442 add_timer(&ipr_cmd->timer);
8443 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8444
8445 LEAVE;
8446 return IPR_RC_JOB_RETURN;
8447 }
8448
8449 /**
8450 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
8451 * @ipr_cmd: ipr command struct
8452 *
8453 * This function is invoked when an adapter dump has run out
8454 * of processing time.
8455 *
8456 * Return value:
8457 * IPR_RC_JOB_CONTINUE
8458 **/
8459 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
8460 {
8461 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8462
8463 if (ioa_cfg->sdt_state == GET_DUMP)
8464 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8465 else if (ioa_cfg->sdt_state == READ_DUMP)
8466 ioa_cfg->sdt_state = ABORT_DUMP;
8467
8468 ioa_cfg->dump_timeout = 1;
8469 ipr_cmd->job_step = ipr_reset_alert;
8470
8471 return IPR_RC_JOB_CONTINUE;
8472 }
8473
8474 /**
8475 * ipr_unit_check_no_data - Log a unit check/no data error log
8476 * @ioa_cfg: ioa config struct
8477 *
8478 * Logs an error indicating the adapter unit checked, but for some
8479 * reason, we were unable to fetch the unit check buffer.
8480 *
8481 * Return value:
8482 * nothing
8483 **/
8484 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
8485 {
8486 ioa_cfg->errors_logged++;
8487 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
8488 }
8489
8490 /**
8491 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
8492 * @ioa_cfg: ioa config struct
8493 *
8494 * Fetches the unit check buffer from the adapter by clocking the data
8495 * through the mailbox register.
8496 *
8497 * Return value:
8498 * nothing
8499 **/
8500 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
8501 {
8502 unsigned long mailbox;
8503 struct ipr_hostrcb *hostrcb;
8504 struct ipr_uc_sdt sdt;
8505 int rc, length;
8506 u32 ioasc;
8507
8508 mailbox = readl(ioa_cfg->ioa_mailbox);
8509
8510 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
8511 ipr_unit_check_no_data(ioa_cfg);
8512 return;
8513 }
8514
8515 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
8516 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
8517 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
8518
8519 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
8520 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
8521 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
8522 ipr_unit_check_no_data(ioa_cfg);
8523 return;
8524 }
8525
8526 /* Find length of the first sdt entry (UC buffer) */
8527 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
8528 length = be32_to_cpu(sdt.entry[0].end_token);
8529 else
8530 length = (be32_to_cpu(sdt.entry[0].end_token) -
8531 be32_to_cpu(sdt.entry[0].start_token)) &
8532 IPR_FMT2_MBX_ADDR_MASK;
8533
8534 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
8535 struct ipr_hostrcb, queue);
8536 list_del_init(&hostrcb->queue);
8537 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
8538
8539 rc = ipr_get_ldump_data_section(ioa_cfg,
8540 be32_to_cpu(sdt.entry[0].start_token),
8541 (__be32 *)&hostrcb->hcam,
8542 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
8543
8544 if (!rc) {
8545 ipr_handle_log_data(ioa_cfg, hostrcb);
8546 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
8547 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
8548 ioa_cfg->sdt_state == GET_DUMP)
8549 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8550 } else
8551 ipr_unit_check_no_data(ioa_cfg);
8552
8553 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
8554 }
8555
8556 /**
8557 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
8558 * @ipr_cmd: ipr command struct
8559 *
8560 * Description: This function will call to get the unit check buffer.
8561 *
8562 * Return value:
8563 * IPR_RC_JOB_RETURN
8564 **/
8565 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
8566 {
8567 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8568
8569 ENTER;
8570 ioa_cfg->ioa_unit_checked = 0;
8571 ipr_get_unit_check_buffer(ioa_cfg);
8572 ipr_cmd->job_step = ipr_reset_alert;
8573 ipr_reset_start_timer(ipr_cmd, 0);
8574
8575 LEAVE;
8576 return IPR_RC_JOB_RETURN;
8577 }
8578
8579 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd)
8580 {
8581 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8582
8583 ENTER;
8584
8585 if (ioa_cfg->sdt_state != GET_DUMP)
8586 return IPR_RC_JOB_RETURN;
8587
8588 if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left ||
8589 (readl(ioa_cfg->regs.sense_interrupt_reg) &
8590 IPR_PCII_MAILBOX_STABLE)) {
8591
8592 if (!ipr_cmd->u.time_left)
8593 dev_err(&ioa_cfg->pdev->dev,
8594 "Timed out waiting for Mailbox register.\n");
8595
8596 ioa_cfg->sdt_state = READ_DUMP;
8597 ioa_cfg->dump_timeout = 0;
8598 if (ioa_cfg->sis64)
8599 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
8600 else
8601 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
8602 ipr_cmd->job_step = ipr_reset_wait_for_dump;
8603 schedule_work(&ioa_cfg->work_q);
8604
8605 } else {
8606 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8607 ipr_reset_start_timer(ipr_cmd,
8608 IPR_CHECK_FOR_RESET_TIMEOUT);
8609 }
8610
8611 LEAVE;
8612 return IPR_RC_JOB_RETURN;
8613 }
8614
8615 /**
8616 * ipr_reset_restore_cfg_space - Restore PCI config space.
8617 * @ipr_cmd: ipr command struct
8618 *
8619 * Description: This function restores the saved PCI config space of
8620 * the adapter, fails all outstanding ops back to the callers, and
8621 * fetches the dump/unit check if applicable to this reset.
8622 *
8623 * Return value:
8624 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8625 **/
8626 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
8627 {
8628 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8629 u32 int_reg;
8630
8631 ENTER;
8632 ioa_cfg->pdev->state_saved = true;
8633 pci_restore_state(ioa_cfg->pdev);
8634
8635 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
8636 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8637 return IPR_RC_JOB_CONTINUE;
8638 }
8639
8640 ipr_fail_all_ops(ioa_cfg);
8641
8642 if (ioa_cfg->sis64) {
8643 /* Set the adapter to the correct endian mode. */
8644 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8645 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8646 }
8647
8648 if (ioa_cfg->ioa_unit_checked) {
8649 if (ioa_cfg->sis64) {
8650 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
8651 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
8652 return IPR_RC_JOB_RETURN;
8653 } else {
8654 ioa_cfg->ioa_unit_checked = 0;
8655 ipr_get_unit_check_buffer(ioa_cfg);
8656 ipr_cmd->job_step = ipr_reset_alert;
8657 ipr_reset_start_timer(ipr_cmd, 0);
8658 return IPR_RC_JOB_RETURN;
8659 }
8660 }
8661
8662 if (ioa_cfg->in_ioa_bringdown) {
8663 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8664 } else if (ioa_cfg->sdt_state == GET_DUMP) {
8665 ipr_cmd->job_step = ipr_dump_mailbox_wait;
8666 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX;
8667 } else {
8668 ipr_cmd->job_step = ipr_reset_enable_ioa;
8669 }
8670
8671 LEAVE;
8672 return IPR_RC_JOB_CONTINUE;
8673 }
8674
8675 /**
8676 * ipr_reset_bist_done - BIST has completed on the adapter.
8677 * @ipr_cmd: ipr command struct
8678 *
8679 * Description: Unblock config space and resume the reset process.
8680 *
8681 * Return value:
8682 * IPR_RC_JOB_CONTINUE
8683 **/
8684 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
8685 {
8686 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8687
8688 ENTER;
8689 if (ioa_cfg->cfg_locked)
8690 pci_cfg_access_unlock(ioa_cfg->pdev);
8691 ioa_cfg->cfg_locked = 0;
8692 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
8693 LEAVE;
8694 return IPR_RC_JOB_CONTINUE;
8695 }
8696
8697 /**
8698 * ipr_reset_start_bist - Run BIST on the adapter.
8699 * @ipr_cmd: ipr command struct
8700 *
8701 * Description: This function runs BIST on the adapter, then delays 2 seconds.
8702 *
8703 * Return value:
8704 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8705 **/
8706 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
8707 {
8708 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8709 int rc = PCIBIOS_SUCCESSFUL;
8710
8711 ENTER;
8712 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
8713 writel(IPR_UPROCI_SIS64_START_BIST,
8714 ioa_cfg->regs.set_uproc_interrupt_reg32);
8715 else
8716 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
8717
8718 if (rc == PCIBIOS_SUCCESSFUL) {
8719 ipr_cmd->job_step = ipr_reset_bist_done;
8720 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8721 rc = IPR_RC_JOB_RETURN;
8722 } else {
8723 if (ioa_cfg->cfg_locked)
8724 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
8725 ioa_cfg->cfg_locked = 0;
8726 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8727 rc = IPR_RC_JOB_CONTINUE;
8728 }
8729
8730 LEAVE;
8731 return rc;
8732 }
8733
8734 /**
8735 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
8736 * @ipr_cmd: ipr command struct
8737 *
8738 * Description: This clears PCI reset to the adapter and delays two seconds.
8739 *
8740 * Return value:
8741 * IPR_RC_JOB_RETURN
8742 **/
8743 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
8744 {
8745 ENTER;
8746 ipr_cmd->job_step = ipr_reset_bist_done;
8747 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8748 LEAVE;
8749 return IPR_RC_JOB_RETURN;
8750 }
8751
8752 /**
8753 * ipr_reset_reset_work - Pulse a PCIe fundamental reset
8754 * @work: work struct
8755 *
8756 * Description: This pulses warm reset to a slot.
8757 *
8758 **/
8759 static void ipr_reset_reset_work(struct work_struct *work)
8760 {
8761 struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work);
8762 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8763 struct pci_dev *pdev = ioa_cfg->pdev;
8764 unsigned long lock_flags = 0;
8765
8766 ENTER;
8767 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
8768 msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT));
8769 pci_set_pcie_reset_state(pdev, pcie_deassert_reset);
8770
8771 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8772 if (ioa_cfg->reset_cmd == ipr_cmd)
8773 ipr_reset_ioa_job(ipr_cmd);
8774 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8775 LEAVE;
8776 }
8777
8778 /**
8779 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
8780 * @ipr_cmd: ipr command struct
8781 *
8782 * Description: This asserts PCI reset to the adapter.
8783 *
8784 * Return value:
8785 * IPR_RC_JOB_RETURN
8786 **/
8787 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
8788 {
8789 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8790
8791 ENTER;
8792 INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work);
8793 queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work);
8794 ipr_cmd->job_step = ipr_reset_slot_reset_done;
8795 LEAVE;
8796 return IPR_RC_JOB_RETURN;
8797 }
8798
8799 /**
8800 * ipr_reset_block_config_access_wait - Wait for permission to block config access
8801 * @ipr_cmd: ipr command struct
8802 *
8803 * Description: This attempts to block config access to the IOA.
8804 *
8805 * Return value:
8806 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8807 **/
8808 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
8809 {
8810 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8811 int rc = IPR_RC_JOB_CONTINUE;
8812
8813 if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
8814 ioa_cfg->cfg_locked = 1;
8815 ipr_cmd->job_step = ioa_cfg->reset;
8816 } else {
8817 if (ipr_cmd->u.time_left) {
8818 rc = IPR_RC_JOB_RETURN;
8819 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8820 ipr_reset_start_timer(ipr_cmd,
8821 IPR_CHECK_FOR_RESET_TIMEOUT);
8822 } else {
8823 ipr_cmd->job_step = ioa_cfg->reset;
8824 dev_err(&ioa_cfg->pdev->dev,
8825 "Timed out waiting to lock config access. Resetting anyway.\n");
8826 }
8827 }
8828
8829 return rc;
8830 }
8831
8832 /**
8833 * ipr_reset_block_config_access - Block config access to the IOA
8834 * @ipr_cmd: ipr command struct
8835 *
8836 * Description: This attempts to block config access to the IOA
8837 *
8838 * Return value:
8839 * IPR_RC_JOB_CONTINUE
8840 **/
8841 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
8842 {
8843 ipr_cmd->ioa_cfg->cfg_locked = 0;
8844 ipr_cmd->job_step = ipr_reset_block_config_access_wait;
8845 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8846 return IPR_RC_JOB_CONTINUE;
8847 }
8848
8849 /**
8850 * ipr_reset_allowed - Query whether or not IOA can be reset
8851 * @ioa_cfg: ioa config struct
8852 *
8853 * Return value:
8854 * 0 if reset not allowed / non-zero if reset is allowed
8855 **/
8856 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
8857 {
8858 volatile u32 temp_reg;
8859
8860 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8861 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
8862 }
8863
8864 /**
8865 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
8866 * @ipr_cmd: ipr command struct
8867 *
8868 * Description: This function waits for adapter permission to run BIST,
8869 * then runs BIST. If the adapter does not give permission after a
8870 * reasonable time, we will reset the adapter anyway. The impact of
8871 * resetting the adapter without warning the adapter is the risk of
8872 * losing the persistent error log on the adapter. If the adapter is
8873 * reset while it is writing to the flash on the adapter, the flash
8874 * segment will have bad ECC and be zeroed.
8875 *
8876 * Return value:
8877 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8878 **/
8879 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
8880 {
8881 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8882 int rc = IPR_RC_JOB_RETURN;
8883
8884 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
8885 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8886 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8887 } else {
8888 ipr_cmd->job_step = ipr_reset_block_config_access;
8889 rc = IPR_RC_JOB_CONTINUE;
8890 }
8891
8892 return rc;
8893 }
8894
8895 /**
8896 * ipr_reset_alert - Alert the adapter of a pending reset
8897 * @ipr_cmd: ipr command struct
8898 *
8899 * Description: This function alerts the adapter that it will be reset.
8900 * If memory space is not currently enabled, proceed directly
8901 * to running BIST on the adapter. The timer must always be started
8902 * so we guarantee we do not run BIST from ipr_isr.
8903 *
8904 * Return value:
8905 * IPR_RC_JOB_RETURN
8906 **/
8907 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
8908 {
8909 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8910 u16 cmd_reg;
8911 int rc;
8912
8913 ENTER;
8914 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
8915
8916 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
8917 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
8918 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
8919 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
8920 } else {
8921 ipr_cmd->job_step = ipr_reset_block_config_access;
8922 }
8923
8924 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8925 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8926
8927 LEAVE;
8928 return IPR_RC_JOB_RETURN;
8929 }
8930
8931 /**
8932 * ipr_reset_quiesce_done - Complete IOA disconnect
8933 * @ipr_cmd: ipr command struct
8934 *
8935 * Description: Freeze the adapter to complete quiesce processing
8936 *
8937 * Return value:
8938 * IPR_RC_JOB_CONTINUE
8939 **/
8940 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd)
8941 {
8942 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8943
8944 ENTER;
8945 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8946 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8947 LEAVE;
8948 return IPR_RC_JOB_CONTINUE;
8949 }
8950
8951 /**
8952 * ipr_reset_cancel_hcam_done - Check for outstanding commands
8953 * @ipr_cmd: ipr command struct
8954 *
8955 * Description: Ensure nothing is outstanding to the IOA and
8956 * proceed with IOA disconnect. Otherwise reset the IOA.
8957 *
8958 * Return value:
8959 * IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE
8960 **/
8961 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd)
8962 {
8963 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8964 struct ipr_cmnd *loop_cmd;
8965 struct ipr_hrr_queue *hrrq;
8966 int rc = IPR_RC_JOB_CONTINUE;
8967 int count = 0;
8968
8969 ENTER;
8970 ipr_cmd->job_step = ipr_reset_quiesce_done;
8971
8972 for_each_hrrq(hrrq, ioa_cfg) {
8973 spin_lock(&hrrq->_lock);
8974 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) {
8975 count++;
8976 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8977 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
8978 rc = IPR_RC_JOB_RETURN;
8979 break;
8980 }
8981 spin_unlock(&hrrq->_lock);
8982
8983 if (count)
8984 break;
8985 }
8986
8987 LEAVE;
8988 return rc;
8989 }
8990
8991 /**
8992 * ipr_reset_cancel_hcam - Cancel outstanding HCAMs
8993 * @ipr_cmd: ipr command struct
8994 *
8995 * Description: Cancel any oustanding HCAMs to the IOA.
8996 *
8997 * Return value:
8998 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8999 **/
9000 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd)
9001 {
9002 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9003 int rc = IPR_RC_JOB_CONTINUE;
9004 struct ipr_cmd_pkt *cmd_pkt;
9005 struct ipr_cmnd *hcam_cmd;
9006 struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ];
9007
9008 ENTER;
9009 ipr_cmd->job_step = ipr_reset_cancel_hcam_done;
9010
9011 if (!hrrq->ioa_is_dead) {
9012 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) {
9013 list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) {
9014 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC)
9015 continue;
9016
9017 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9018 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
9019 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
9020 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
9021 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST;
9022 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB;
9023 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff;
9024 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff;
9025 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff;
9026 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff;
9027 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff;
9028 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff;
9029 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff;
9030 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff;
9031
9032 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
9033 IPR_CANCEL_TIMEOUT);
9034
9035 rc = IPR_RC_JOB_RETURN;
9036 ipr_cmd->job_step = ipr_reset_cancel_hcam;
9037 break;
9038 }
9039 }
9040 } else
9041 ipr_cmd->job_step = ipr_reset_alert;
9042
9043 LEAVE;
9044 return rc;
9045 }
9046
9047 /**
9048 * ipr_reset_ucode_download_done - Microcode download completion
9049 * @ipr_cmd: ipr command struct
9050 *
9051 * Description: This function unmaps the microcode download buffer.
9052 *
9053 * Return value:
9054 * IPR_RC_JOB_CONTINUE
9055 **/
9056 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
9057 {
9058 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9059 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
9060
9061 dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist,
9062 sglist->num_sg, DMA_TO_DEVICE);
9063
9064 ipr_cmd->job_step = ipr_reset_alert;
9065 return IPR_RC_JOB_CONTINUE;
9066 }
9067
9068 /**
9069 * ipr_reset_ucode_download - Download microcode to the adapter
9070 * @ipr_cmd: ipr command struct
9071 *
9072 * Description: This function checks to see if it there is microcode
9073 * to download to the adapter. If there is, a download is performed.
9074 *
9075 * Return value:
9076 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
9077 **/
9078 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
9079 {
9080 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9081 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
9082
9083 ENTER;
9084 ipr_cmd->job_step = ipr_reset_alert;
9085
9086 if (!sglist)
9087 return IPR_RC_JOB_CONTINUE;
9088
9089 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9090 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
9091 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
9092 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
9093 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
9094 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
9095 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
9096
9097 if (ioa_cfg->sis64)
9098 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
9099 else
9100 ipr_build_ucode_ioadl(ipr_cmd, sglist);
9101 ipr_cmd->job_step = ipr_reset_ucode_download_done;
9102
9103 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
9104 IPR_WRITE_BUFFER_TIMEOUT);
9105
9106 LEAVE;
9107 return IPR_RC_JOB_RETURN;
9108 }
9109
9110 /**
9111 * ipr_reset_shutdown_ioa - Shutdown the adapter
9112 * @ipr_cmd: ipr command struct
9113 *
9114 * Description: This function issues an adapter shutdown of the
9115 * specified type to the specified adapter as part of the
9116 * adapter reset job.
9117 *
9118 * Return value:
9119 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
9120 **/
9121 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
9122 {
9123 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9124 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
9125 unsigned long timeout;
9126 int rc = IPR_RC_JOB_CONTINUE;
9127
9128 ENTER;
9129 if (shutdown_type == IPR_SHUTDOWN_QUIESCE)
9130 ipr_cmd->job_step = ipr_reset_cancel_hcam;
9131 else if (shutdown_type != IPR_SHUTDOWN_NONE &&
9132 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
9133 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9134 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
9135 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
9136 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
9137
9138 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
9139 timeout = IPR_SHUTDOWN_TIMEOUT;
9140 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
9141 timeout = IPR_INTERNAL_TIMEOUT;
9142 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
9143 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
9144 else
9145 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
9146
9147 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
9148
9149 rc = IPR_RC_JOB_RETURN;
9150 ipr_cmd->job_step = ipr_reset_ucode_download;
9151 } else
9152 ipr_cmd->job_step = ipr_reset_alert;
9153
9154 LEAVE;
9155 return rc;
9156 }
9157
9158 /**
9159 * ipr_reset_ioa_job - Adapter reset job
9160 * @ipr_cmd: ipr command struct
9161 *
9162 * Description: This function is the job router for the adapter reset job.
9163 *
9164 * Return value:
9165 * none
9166 **/
9167 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
9168 {
9169 u32 rc, ioasc;
9170 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9171
9172 do {
9173 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
9174
9175 if (ioa_cfg->reset_cmd != ipr_cmd) {
9176 /*
9177 * We are doing nested adapter resets and this is
9178 * not the current reset job.
9179 */
9180 list_add_tail(&ipr_cmd->queue,
9181 &ipr_cmd->hrrq->hrrq_free_q);
9182 return;
9183 }
9184
9185 if (IPR_IOASC_SENSE_KEY(ioasc)) {
9186 rc = ipr_cmd->job_step_failed(ipr_cmd);
9187 if (rc == IPR_RC_JOB_RETURN)
9188 return;
9189 }
9190
9191 ipr_reinit_ipr_cmnd(ipr_cmd);
9192 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
9193 rc = ipr_cmd->job_step(ipr_cmd);
9194 } while (rc == IPR_RC_JOB_CONTINUE);
9195 }
9196
9197 /**
9198 * _ipr_initiate_ioa_reset - Initiate an adapter reset
9199 * @ioa_cfg: ioa config struct
9200 * @job_step: first job step of reset job
9201 * @shutdown_type: shutdown type
9202 *
9203 * Description: This function will initiate the reset of the given adapter
9204 * starting at the selected job step.
9205 * If the caller needs to wait on the completion of the reset,
9206 * the caller must sleep on the reset_wait_q.
9207 *
9208 * Return value:
9209 * none
9210 **/
9211 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9212 int (*job_step) (struct ipr_cmnd *),
9213 enum ipr_shutdown_type shutdown_type)
9214 {
9215 struct ipr_cmnd *ipr_cmd;
9216 int i;
9217
9218 ioa_cfg->in_reset_reload = 1;
9219 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9220 spin_lock(&ioa_cfg->hrrq[i]._lock);
9221 ioa_cfg->hrrq[i].allow_cmds = 0;
9222 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9223 }
9224 wmb();
9225 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
9226 ioa_cfg->scsi_unblock = 0;
9227 ioa_cfg->scsi_blocked = 1;
9228 scsi_block_requests(ioa_cfg->host);
9229 }
9230
9231 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9232 ioa_cfg->reset_cmd = ipr_cmd;
9233 ipr_cmd->job_step = job_step;
9234 ipr_cmd->u.shutdown_type = shutdown_type;
9235
9236 ipr_reset_ioa_job(ipr_cmd);
9237 }
9238
9239 /**
9240 * ipr_initiate_ioa_reset - Initiate an adapter reset
9241 * @ioa_cfg: ioa config struct
9242 * @shutdown_type: shutdown type
9243 *
9244 * Description: This function will initiate the reset of the given adapter.
9245 * If the caller needs to wait on the completion of the reset,
9246 * the caller must sleep on the reset_wait_q.
9247 *
9248 * Return value:
9249 * none
9250 **/
9251 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9252 enum ipr_shutdown_type shutdown_type)
9253 {
9254 int i;
9255
9256 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
9257 return;
9258
9259 if (ioa_cfg->in_reset_reload) {
9260 if (ioa_cfg->sdt_state == GET_DUMP)
9261 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
9262 else if (ioa_cfg->sdt_state == READ_DUMP)
9263 ioa_cfg->sdt_state = ABORT_DUMP;
9264 }
9265
9266 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
9267 dev_err(&ioa_cfg->pdev->dev,
9268 "IOA taken offline - error recovery failed\n");
9269
9270 ioa_cfg->reset_retries = 0;
9271 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9272 spin_lock(&ioa_cfg->hrrq[i]._lock);
9273 ioa_cfg->hrrq[i].ioa_is_dead = 1;
9274 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9275 }
9276 wmb();
9277
9278 if (ioa_cfg->in_ioa_bringdown) {
9279 ioa_cfg->reset_cmd = NULL;
9280 ioa_cfg->in_reset_reload = 0;
9281 ipr_fail_all_ops(ioa_cfg);
9282 wake_up_all(&ioa_cfg->reset_wait_q);
9283
9284 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
9285 ioa_cfg->scsi_unblock = 1;
9286 schedule_work(&ioa_cfg->work_q);
9287 }
9288 return;
9289 } else {
9290 ioa_cfg->in_ioa_bringdown = 1;
9291 shutdown_type = IPR_SHUTDOWN_NONE;
9292 }
9293 }
9294
9295 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
9296 shutdown_type);
9297 }
9298
9299 /**
9300 * ipr_reset_freeze - Hold off all I/O activity
9301 * @ipr_cmd: ipr command struct
9302 *
9303 * Description: If the PCI slot is frozen, hold off all I/O
9304 * activity; then, as soon as the slot is available again,
9305 * initiate an adapter reset.
9306 */
9307 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
9308 {
9309 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9310 int i;
9311
9312 /* Disallow new interrupts, avoid loop */
9313 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9314 spin_lock(&ioa_cfg->hrrq[i]._lock);
9315 ioa_cfg->hrrq[i].allow_interrupts = 0;
9316 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9317 }
9318 wmb();
9319 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
9320 ipr_cmd->done = ipr_reset_ioa_job;
9321 return IPR_RC_JOB_RETURN;
9322 }
9323
9324 /**
9325 * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled
9326 * @pdev: PCI device struct
9327 *
9328 * Description: This routine is called to tell us that the MMIO
9329 * access to the IOA has been restored
9330 */
9331 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev)
9332 {
9333 unsigned long flags = 0;
9334 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9335
9336 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9337 if (!ioa_cfg->probe_done)
9338 pci_save_state(pdev);
9339 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9340 return PCI_ERS_RESULT_NEED_RESET;
9341 }
9342
9343 /**
9344 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
9345 * @pdev: PCI device struct
9346 *
9347 * Description: This routine is called to tell us that the PCI bus
9348 * is down. Can't do anything here, except put the device driver
9349 * into a holding pattern, waiting for the PCI bus to come back.
9350 */
9351 static void ipr_pci_frozen(struct pci_dev *pdev)
9352 {
9353 unsigned long flags = 0;
9354 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9355
9356 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9357 if (ioa_cfg->probe_done)
9358 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
9359 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9360 }
9361
9362 /**
9363 * ipr_pci_slot_reset - Called when PCI slot has been reset.
9364 * @pdev: PCI device struct
9365 *
9366 * Description: This routine is called by the pci error recovery
9367 * code after the PCI slot has been reset, just before we
9368 * should resume normal operations.
9369 */
9370 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
9371 {
9372 unsigned long flags = 0;
9373 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9374
9375 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9376 if (ioa_cfg->probe_done) {
9377 if (ioa_cfg->needs_warm_reset)
9378 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9379 else
9380 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
9381 IPR_SHUTDOWN_NONE);
9382 } else
9383 wake_up_all(&ioa_cfg->eeh_wait_q);
9384 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9385 return PCI_ERS_RESULT_RECOVERED;
9386 }
9387
9388 /**
9389 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
9390 * @pdev: PCI device struct
9391 *
9392 * Description: This routine is called when the PCI bus has
9393 * permanently failed.
9394 */
9395 static void ipr_pci_perm_failure(struct pci_dev *pdev)
9396 {
9397 unsigned long flags = 0;
9398 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9399 int i;
9400
9401 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9402 if (ioa_cfg->probe_done) {
9403 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
9404 ioa_cfg->sdt_state = ABORT_DUMP;
9405 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1;
9406 ioa_cfg->in_ioa_bringdown = 1;
9407 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9408 spin_lock(&ioa_cfg->hrrq[i]._lock);
9409 ioa_cfg->hrrq[i].allow_cmds = 0;
9410 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9411 }
9412 wmb();
9413 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9414 } else
9415 wake_up_all(&ioa_cfg->eeh_wait_q);
9416 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9417 }
9418
9419 /**
9420 * ipr_pci_error_detected - Called when a PCI error is detected.
9421 * @pdev: PCI device struct
9422 * @state: PCI channel state
9423 *
9424 * Description: Called when a PCI error is detected.
9425 *
9426 * Return value:
9427 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
9428 */
9429 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
9430 pci_channel_state_t state)
9431 {
9432 switch (state) {
9433 case pci_channel_io_frozen:
9434 ipr_pci_frozen(pdev);
9435 return PCI_ERS_RESULT_CAN_RECOVER;
9436 case pci_channel_io_perm_failure:
9437 ipr_pci_perm_failure(pdev);
9438 return PCI_ERS_RESULT_DISCONNECT;
9439 break;
9440 default:
9441 break;
9442 }
9443 return PCI_ERS_RESULT_NEED_RESET;
9444 }
9445
9446 /**
9447 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
9448 * @ioa_cfg: ioa cfg struct
9449 *
9450 * Description: This is the second phase of adapter initialization
9451 * This function takes care of initilizing the adapter to the point
9452 * where it can accept new commands.
9453
9454 * Return value:
9455 * 0 on success / -EIO on failure
9456 **/
9457 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
9458 {
9459 int rc = 0;
9460 unsigned long host_lock_flags = 0;
9461
9462 ENTER;
9463 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9464 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
9465 ioa_cfg->probe_done = 1;
9466 if (ioa_cfg->needs_hard_reset) {
9467 ioa_cfg->needs_hard_reset = 0;
9468 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9469 } else
9470 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
9471 IPR_SHUTDOWN_NONE);
9472 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9473
9474 LEAVE;
9475 return rc;
9476 }
9477
9478 /**
9479 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
9480 * @ioa_cfg: ioa config struct
9481 *
9482 * Return value:
9483 * none
9484 **/
9485 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9486 {
9487 int i;
9488
9489 if (ioa_cfg->ipr_cmnd_list) {
9490 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9491 if (ioa_cfg->ipr_cmnd_list[i])
9492 dma_pool_free(ioa_cfg->ipr_cmd_pool,
9493 ioa_cfg->ipr_cmnd_list[i],
9494 ioa_cfg->ipr_cmnd_list_dma[i]);
9495
9496 ioa_cfg->ipr_cmnd_list[i] = NULL;
9497 }
9498 }
9499
9500 if (ioa_cfg->ipr_cmd_pool)
9501 dma_pool_destroy(ioa_cfg->ipr_cmd_pool);
9502
9503 kfree(ioa_cfg->ipr_cmnd_list);
9504 kfree(ioa_cfg->ipr_cmnd_list_dma);
9505 ioa_cfg->ipr_cmnd_list = NULL;
9506 ioa_cfg->ipr_cmnd_list_dma = NULL;
9507 ioa_cfg->ipr_cmd_pool = NULL;
9508 }
9509
9510 /**
9511 * ipr_free_mem - Frees memory allocated for an adapter
9512 * @ioa_cfg: ioa cfg struct
9513 *
9514 * Return value:
9515 * nothing
9516 **/
9517 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
9518 {
9519 int i;
9520
9521 kfree(ioa_cfg->res_entries);
9522 dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs),
9523 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9524 ipr_free_cmd_blks(ioa_cfg);
9525
9526 for (i = 0; i < ioa_cfg->hrrq_num; i++)
9527 dma_free_coherent(&ioa_cfg->pdev->dev,
9528 sizeof(u32) * ioa_cfg->hrrq[i].size,
9529 ioa_cfg->hrrq[i].host_rrq,
9530 ioa_cfg->hrrq[i].host_rrq_dma);
9531
9532 dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size,
9533 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9534
9535 for (i = 0; i < IPR_MAX_HCAMS; i++) {
9536 dma_free_coherent(&ioa_cfg->pdev->dev,
9537 sizeof(struct ipr_hostrcb),
9538 ioa_cfg->hostrcb[i],
9539 ioa_cfg->hostrcb_dma[i]);
9540 }
9541
9542 ipr_free_dump(ioa_cfg);
9543 kfree(ioa_cfg->trace);
9544 }
9545
9546 /**
9547 * ipr_free_irqs - Free all allocated IRQs for the adapter.
9548 * @ioa_cfg: ipr cfg struct
9549 *
9550 * This function frees all allocated IRQs for the
9551 * specified adapter.
9552 *
9553 * Return value:
9554 * none
9555 **/
9556 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg)
9557 {
9558 struct pci_dev *pdev = ioa_cfg->pdev;
9559 int i;
9560
9561 for (i = 0; i < ioa_cfg->nvectors; i++)
9562 free_irq(pci_irq_vector(pdev, i), &ioa_cfg->hrrq[i]);
9563 pci_free_irq_vectors(pdev);
9564 }
9565
9566 /**
9567 * ipr_free_all_resources - Free all allocated resources for an adapter.
9568 * @ipr_cmd: ipr command struct
9569 *
9570 * This function frees all allocated resources for the
9571 * specified adapter.
9572 *
9573 * Return value:
9574 * none
9575 **/
9576 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
9577 {
9578 struct pci_dev *pdev = ioa_cfg->pdev;
9579
9580 ENTER;
9581 ipr_free_irqs(ioa_cfg);
9582 if (ioa_cfg->reset_work_q)
9583 destroy_workqueue(ioa_cfg->reset_work_q);
9584 iounmap(ioa_cfg->hdw_dma_regs);
9585 pci_release_regions(pdev);
9586 ipr_free_mem(ioa_cfg);
9587 scsi_host_put(ioa_cfg->host);
9588 pci_disable_device(pdev);
9589 LEAVE;
9590 }
9591
9592 /**
9593 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
9594 * @ioa_cfg: ioa config struct
9595 *
9596 * Return value:
9597 * 0 on success / -ENOMEM on allocation failure
9598 **/
9599 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9600 {
9601 struct ipr_cmnd *ipr_cmd;
9602 struct ipr_ioarcb *ioarcb;
9603 dma_addr_t dma_addr;
9604 int i, entries_each_hrrq, hrrq_id = 0;
9605
9606 ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev,
9607 sizeof(struct ipr_cmnd), 512, 0);
9608
9609 if (!ioa_cfg->ipr_cmd_pool)
9610 return -ENOMEM;
9611
9612 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL);
9613 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL);
9614
9615 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) {
9616 ipr_free_cmd_blks(ioa_cfg);
9617 return -ENOMEM;
9618 }
9619
9620 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9621 if (ioa_cfg->hrrq_num > 1) {
9622 if (i == 0) {
9623 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS;
9624 ioa_cfg->hrrq[i].min_cmd_id = 0;
9625 ioa_cfg->hrrq[i].max_cmd_id =
9626 (entries_each_hrrq - 1);
9627 } else {
9628 entries_each_hrrq =
9629 IPR_NUM_BASE_CMD_BLKS/
9630 (ioa_cfg->hrrq_num - 1);
9631 ioa_cfg->hrrq[i].min_cmd_id =
9632 IPR_NUM_INTERNAL_CMD_BLKS +
9633 (i - 1) * entries_each_hrrq;
9634 ioa_cfg->hrrq[i].max_cmd_id =
9635 (IPR_NUM_INTERNAL_CMD_BLKS +
9636 i * entries_each_hrrq - 1);
9637 }
9638 } else {
9639 entries_each_hrrq = IPR_NUM_CMD_BLKS;
9640 ioa_cfg->hrrq[i].min_cmd_id = 0;
9641 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1);
9642 }
9643 ioa_cfg->hrrq[i].size = entries_each_hrrq;
9644 }
9645
9646 BUG_ON(ioa_cfg->hrrq_num == 0);
9647
9648 i = IPR_NUM_CMD_BLKS -
9649 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1;
9650 if (i > 0) {
9651 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i;
9652 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i;
9653 }
9654
9655 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9656 ipr_cmd = dma_pool_zalloc(ioa_cfg->ipr_cmd_pool,
9657 GFP_KERNEL, &dma_addr);
9658
9659 if (!ipr_cmd) {
9660 ipr_free_cmd_blks(ioa_cfg);
9661 return -ENOMEM;
9662 }
9663
9664 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
9665 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
9666
9667 ioarcb = &ipr_cmd->ioarcb;
9668 ipr_cmd->dma_addr = dma_addr;
9669 if (ioa_cfg->sis64)
9670 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
9671 else
9672 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
9673
9674 ioarcb->host_response_handle = cpu_to_be32(i << 2);
9675 if (ioa_cfg->sis64) {
9676 ioarcb->u.sis64_addr_data.data_ioadl_addr =
9677 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
9678 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
9679 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
9680 } else {
9681 ioarcb->write_ioadl_addr =
9682 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
9683 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
9684 ioarcb->ioasa_host_pci_addr =
9685 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
9686 }
9687 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
9688 ipr_cmd->cmd_index = i;
9689 ipr_cmd->ioa_cfg = ioa_cfg;
9690 ipr_cmd->sense_buffer_dma = dma_addr +
9691 offsetof(struct ipr_cmnd, sense_buffer);
9692
9693 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id;
9694 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id];
9695 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9696 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id)
9697 hrrq_id++;
9698 }
9699
9700 return 0;
9701 }
9702
9703 /**
9704 * ipr_alloc_mem - Allocate memory for an adapter
9705 * @ioa_cfg: ioa config struct
9706 *
9707 * Return value:
9708 * 0 on success / non-zero for error
9709 **/
9710 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
9711 {
9712 struct pci_dev *pdev = ioa_cfg->pdev;
9713 int i, rc = -ENOMEM;
9714
9715 ENTER;
9716 ioa_cfg->res_entries = kcalloc(ioa_cfg->max_devs_supported,
9717 sizeof(struct ipr_resource_entry),
9718 GFP_KERNEL);
9719
9720 if (!ioa_cfg->res_entries)
9721 goto out;
9722
9723 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
9724 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
9725 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
9726 }
9727
9728 ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev,
9729 sizeof(struct ipr_misc_cbs),
9730 &ioa_cfg->vpd_cbs_dma,
9731 GFP_KERNEL);
9732
9733 if (!ioa_cfg->vpd_cbs)
9734 goto out_free_res_entries;
9735
9736 if (ipr_alloc_cmd_blks(ioa_cfg))
9737 goto out_free_vpd_cbs;
9738
9739 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9740 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev,
9741 sizeof(u32) * ioa_cfg->hrrq[i].size,
9742 &ioa_cfg->hrrq[i].host_rrq_dma,
9743 GFP_KERNEL);
9744
9745 if (!ioa_cfg->hrrq[i].host_rrq) {
9746 while (--i > 0)
9747 dma_free_coherent(&pdev->dev,
9748 sizeof(u32) * ioa_cfg->hrrq[i].size,
9749 ioa_cfg->hrrq[i].host_rrq,
9750 ioa_cfg->hrrq[i].host_rrq_dma);
9751 goto out_ipr_free_cmd_blocks;
9752 }
9753 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg;
9754 }
9755
9756 ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev,
9757 ioa_cfg->cfg_table_size,
9758 &ioa_cfg->cfg_table_dma,
9759 GFP_KERNEL);
9760
9761 if (!ioa_cfg->u.cfg_table)
9762 goto out_free_host_rrq;
9763
9764 for (i = 0; i < IPR_MAX_HCAMS; i++) {
9765 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev,
9766 sizeof(struct ipr_hostrcb),
9767 &ioa_cfg->hostrcb_dma[i],
9768 GFP_KERNEL);
9769
9770 if (!ioa_cfg->hostrcb[i])
9771 goto out_free_hostrcb_dma;
9772
9773 ioa_cfg->hostrcb[i]->hostrcb_dma =
9774 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
9775 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
9776 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
9777 }
9778
9779 ioa_cfg->trace = kcalloc(IPR_NUM_TRACE_ENTRIES,
9780 sizeof(struct ipr_trace_entry),
9781 GFP_KERNEL);
9782
9783 if (!ioa_cfg->trace)
9784 goto out_free_hostrcb_dma;
9785
9786 rc = 0;
9787 out:
9788 LEAVE;
9789 return rc;
9790
9791 out_free_hostrcb_dma:
9792 while (i-- > 0) {
9793 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb),
9794 ioa_cfg->hostrcb[i],
9795 ioa_cfg->hostrcb_dma[i]);
9796 }
9797 dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size,
9798 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9799 out_free_host_rrq:
9800 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9801 dma_free_coherent(&pdev->dev,
9802 sizeof(u32) * ioa_cfg->hrrq[i].size,
9803 ioa_cfg->hrrq[i].host_rrq,
9804 ioa_cfg->hrrq[i].host_rrq_dma);
9805 }
9806 out_ipr_free_cmd_blocks:
9807 ipr_free_cmd_blks(ioa_cfg);
9808 out_free_vpd_cbs:
9809 dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs),
9810 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9811 out_free_res_entries:
9812 kfree(ioa_cfg->res_entries);
9813 goto out;
9814 }
9815
9816 /**
9817 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
9818 * @ioa_cfg: ioa config struct
9819 *
9820 * Return value:
9821 * none
9822 **/
9823 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
9824 {
9825 int i;
9826
9827 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
9828 ioa_cfg->bus_attr[i].bus = i;
9829 ioa_cfg->bus_attr[i].qas_enabled = 0;
9830 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
9831 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
9832 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
9833 else
9834 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
9835 }
9836 }
9837
9838 /**
9839 * ipr_init_regs - Initialize IOA registers
9840 * @ioa_cfg: ioa config struct
9841 *
9842 * Return value:
9843 * none
9844 **/
9845 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg)
9846 {
9847 const struct ipr_interrupt_offsets *p;
9848 struct ipr_interrupts *t;
9849 void __iomem *base;
9850
9851 p = &ioa_cfg->chip_cfg->regs;
9852 t = &ioa_cfg->regs;
9853 base = ioa_cfg->hdw_dma_regs;
9854
9855 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
9856 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
9857 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
9858 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
9859 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
9860 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
9861 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
9862 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
9863 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
9864 t->ioarrin_reg = base + p->ioarrin_reg;
9865 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
9866 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
9867 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
9868 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
9869 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
9870 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
9871
9872 if (ioa_cfg->sis64) {
9873 t->init_feedback_reg = base + p->init_feedback_reg;
9874 t->dump_addr_reg = base + p->dump_addr_reg;
9875 t->dump_data_reg = base + p->dump_data_reg;
9876 t->endian_swap_reg = base + p->endian_swap_reg;
9877 }
9878 }
9879
9880 /**
9881 * ipr_init_ioa_cfg - Initialize IOA config struct
9882 * @ioa_cfg: ioa config struct
9883 * @host: scsi host struct
9884 * @pdev: PCI dev struct
9885 *
9886 * Return value:
9887 * none
9888 **/
9889 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
9890 struct Scsi_Host *host, struct pci_dev *pdev)
9891 {
9892 int i;
9893
9894 ioa_cfg->host = host;
9895 ioa_cfg->pdev = pdev;
9896 ioa_cfg->log_level = ipr_log_level;
9897 ioa_cfg->doorbell = IPR_DOORBELL;
9898 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
9899 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
9900 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
9901 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
9902 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
9903 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
9904
9905 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
9906 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
9907 INIT_LIST_HEAD(&ioa_cfg->hostrcb_report_q);
9908 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
9909 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9910 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
9911 init_waitqueue_head(&ioa_cfg->reset_wait_q);
9912 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9913 init_waitqueue_head(&ioa_cfg->eeh_wait_q);
9914 ioa_cfg->sdt_state = INACTIVE;
9915
9916 ipr_initialize_bus_attr(ioa_cfg);
9917 ioa_cfg->max_devs_supported = ipr_max_devs;
9918
9919 if (ioa_cfg->sis64) {
9920 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
9921 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
9922 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
9923 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
9924 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
9925 + ((sizeof(struct ipr_config_table_entry64)
9926 * ioa_cfg->max_devs_supported)));
9927 } else {
9928 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
9929 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
9930 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
9931 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
9932 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
9933 + ((sizeof(struct ipr_config_table_entry)
9934 * ioa_cfg->max_devs_supported)));
9935 }
9936
9937 host->max_channel = IPR_VSET_BUS;
9938 host->unique_id = host->host_no;
9939 host->max_cmd_len = IPR_MAX_CDB_LEN;
9940 host->can_queue = ioa_cfg->max_cmds;
9941 pci_set_drvdata(pdev, ioa_cfg);
9942
9943 for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) {
9944 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q);
9945 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q);
9946 spin_lock_init(&ioa_cfg->hrrq[i]._lock);
9947 if (i == 0)
9948 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock;
9949 else
9950 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock;
9951 }
9952 }
9953
9954 /**
9955 * ipr_get_chip_info - Find adapter chip information
9956 * @dev_id: PCI device id struct
9957 *
9958 * Return value:
9959 * ptr to chip information on success / NULL on failure
9960 **/
9961 static const struct ipr_chip_t *
9962 ipr_get_chip_info(const struct pci_device_id *dev_id)
9963 {
9964 int i;
9965
9966 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
9967 if (ipr_chip[i].vendor == dev_id->vendor &&
9968 ipr_chip[i].device == dev_id->device)
9969 return &ipr_chip[i];
9970 return NULL;
9971 }
9972
9973 /**
9974 * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete
9975 * during probe time
9976 * @ioa_cfg: ioa config struct
9977 *
9978 * Return value:
9979 * None
9980 **/
9981 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg)
9982 {
9983 struct pci_dev *pdev = ioa_cfg->pdev;
9984
9985 if (pci_channel_offline(pdev)) {
9986 wait_event_timeout(ioa_cfg->eeh_wait_q,
9987 !pci_channel_offline(pdev),
9988 IPR_PCI_ERROR_RECOVERY_TIMEOUT);
9989 pci_restore_state(pdev);
9990 }
9991 }
9992
9993 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg)
9994 {
9995 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1;
9996
9997 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) {
9998 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n,
9999 "host%d-%d", ioa_cfg->host->host_no, vec_idx);
10000 ioa_cfg->vectors_info[vec_idx].
10001 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0;
10002 }
10003 }
10004
10005 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg,
10006 struct pci_dev *pdev)
10007 {
10008 int i, rc;
10009
10010 for (i = 1; i < ioa_cfg->nvectors; i++) {
10011 rc = request_irq(pci_irq_vector(pdev, i),
10012 ipr_isr_mhrrq,
10013 0,
10014 ioa_cfg->vectors_info[i].desc,
10015 &ioa_cfg->hrrq[i]);
10016 if (rc) {
10017 while (--i >= 0)
10018 free_irq(pci_irq_vector(pdev, i),
10019 &ioa_cfg->hrrq[i]);
10020 return rc;
10021 }
10022 }
10023 return 0;
10024 }
10025
10026 /**
10027 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
10028 * @pdev: PCI device struct
10029 *
10030 * Description: Simply set the msi_received flag to 1 indicating that
10031 * Message Signaled Interrupts are supported.
10032 *
10033 * Return value:
10034 * 0 on success / non-zero on failure
10035 **/
10036 static irqreturn_t ipr_test_intr(int irq, void *devp)
10037 {
10038 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
10039 unsigned long lock_flags = 0;
10040 irqreturn_t rc = IRQ_HANDLED;
10041
10042 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq);
10043 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10044
10045 ioa_cfg->msi_received = 1;
10046 wake_up(&ioa_cfg->msi_wait_q);
10047
10048 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10049 return rc;
10050 }
10051
10052 /**
10053 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
10054 * @pdev: PCI device struct
10055 *
10056 * Description: This routine sets up and initiates a test interrupt to determine
10057 * if the interrupt is received via the ipr_test_intr() service routine.
10058 * If the tests fails, the driver will fall back to LSI.
10059 *
10060 * Return value:
10061 * 0 on success / non-zero on failure
10062 **/
10063 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev)
10064 {
10065 int rc;
10066 volatile u32 int_reg;
10067 unsigned long lock_flags = 0;
10068 int irq = pci_irq_vector(pdev, 0);
10069
10070 ENTER;
10071
10072 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10073 init_waitqueue_head(&ioa_cfg->msi_wait_q);
10074 ioa_cfg->msi_received = 0;
10075 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10076 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
10077 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
10078 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10079
10080 rc = request_irq(irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
10081 if (rc) {
10082 dev_err(&pdev->dev, "Can not assign irq %d\n", irq);
10083 return rc;
10084 } else if (ipr_debug)
10085 dev_info(&pdev->dev, "IRQ assigned: %d\n", irq);
10086
10087 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
10088 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
10089 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
10090 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10091 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10092
10093 if (!ioa_cfg->msi_received) {
10094 /* MSI test failed */
10095 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
10096 rc = -EOPNOTSUPP;
10097 } else if (ipr_debug)
10098 dev_info(&pdev->dev, "MSI test succeeded.\n");
10099
10100 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10101
10102 free_irq(irq, ioa_cfg);
10103
10104 LEAVE;
10105
10106 return rc;
10107 }
10108
10109 /* ipr_probe_ioa - Allocates memory and does first stage of initialization
10110 * @pdev: PCI device struct
10111 * @dev_id: PCI device id struct
10112 *
10113 * Return value:
10114 * 0 on success / non-zero on failure
10115 **/
10116 static int ipr_probe_ioa(struct pci_dev *pdev,
10117 const struct pci_device_id *dev_id)
10118 {
10119 struct ipr_ioa_cfg *ioa_cfg;
10120 struct Scsi_Host *host;
10121 unsigned long ipr_regs_pci;
10122 void __iomem *ipr_regs;
10123 int rc = PCIBIOS_SUCCESSFUL;
10124 volatile u32 mask, uproc, interrupts;
10125 unsigned long lock_flags, driver_lock_flags;
10126 unsigned int irq_flag;
10127
10128 ENTER;
10129
10130 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
10131 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
10132
10133 if (!host) {
10134 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
10135 rc = -ENOMEM;
10136 goto out;
10137 }
10138
10139 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
10140 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
10141 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops);
10142
10143 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
10144
10145 if (!ioa_cfg->ipr_chip) {
10146 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
10147 dev_id->vendor, dev_id->device);
10148 goto out_scsi_host_put;
10149 }
10150
10151 /* set SIS 32 or SIS 64 */
10152 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
10153 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
10154 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr;
10155 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds;
10156
10157 if (ipr_transop_timeout)
10158 ioa_cfg->transop_timeout = ipr_transop_timeout;
10159 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
10160 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
10161 else
10162 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
10163
10164 ioa_cfg->revid = pdev->revision;
10165
10166 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
10167
10168 ipr_regs_pci = pci_resource_start(pdev, 0);
10169
10170 rc = pci_request_regions(pdev, IPR_NAME);
10171 if (rc < 0) {
10172 dev_err(&pdev->dev,
10173 "Couldn't register memory range of registers\n");
10174 goto out_scsi_host_put;
10175 }
10176
10177 rc = pci_enable_device(pdev);
10178
10179 if (rc || pci_channel_offline(pdev)) {
10180 if (pci_channel_offline(pdev)) {
10181 ipr_wait_for_pci_err_recovery(ioa_cfg);
10182 rc = pci_enable_device(pdev);
10183 }
10184
10185 if (rc) {
10186 dev_err(&pdev->dev, "Cannot enable adapter\n");
10187 ipr_wait_for_pci_err_recovery(ioa_cfg);
10188 goto out_release_regions;
10189 }
10190 }
10191
10192 ipr_regs = pci_ioremap_bar(pdev, 0);
10193
10194 if (!ipr_regs) {
10195 dev_err(&pdev->dev,
10196 "Couldn't map memory range of registers\n");
10197 rc = -ENOMEM;
10198 goto out_disable;
10199 }
10200
10201 ioa_cfg->hdw_dma_regs = ipr_regs;
10202 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
10203 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
10204
10205 ipr_init_regs(ioa_cfg);
10206
10207 if (ioa_cfg->sis64) {
10208 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10209 if (rc < 0) {
10210 dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n");
10211 rc = dma_set_mask_and_coherent(&pdev->dev,
10212 DMA_BIT_MASK(32));
10213 }
10214 } else
10215 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10216
10217 if (rc < 0) {
10218 dev_err(&pdev->dev, "Failed to set DMA mask\n");
10219 goto cleanup_nomem;
10220 }
10221
10222 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
10223 ioa_cfg->chip_cfg->cache_line_size);
10224
10225 if (rc != PCIBIOS_SUCCESSFUL) {
10226 dev_err(&pdev->dev, "Write of cache line size failed\n");
10227 ipr_wait_for_pci_err_recovery(ioa_cfg);
10228 rc = -EIO;
10229 goto cleanup_nomem;
10230 }
10231
10232 /* Issue MMIO read to ensure card is not in EEH */
10233 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
10234 ipr_wait_for_pci_err_recovery(ioa_cfg);
10235
10236 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) {
10237 dev_err(&pdev->dev, "The max number of MSIX is %d\n",
10238 IPR_MAX_MSIX_VECTORS);
10239 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS;
10240 }
10241
10242 irq_flag = PCI_IRQ_LEGACY;
10243 if (ioa_cfg->ipr_chip->has_msi)
10244 irq_flag |= PCI_IRQ_MSI | PCI_IRQ_MSIX;
10245 rc = pci_alloc_irq_vectors(pdev, 1, ipr_number_of_msix, irq_flag);
10246 if (rc < 0) {
10247 ipr_wait_for_pci_err_recovery(ioa_cfg);
10248 goto cleanup_nomem;
10249 }
10250 ioa_cfg->nvectors = rc;
10251
10252 if (!pdev->msi_enabled && !pdev->msix_enabled)
10253 ioa_cfg->clear_isr = 1;
10254
10255 pci_set_master(pdev);
10256
10257 if (pci_channel_offline(pdev)) {
10258 ipr_wait_for_pci_err_recovery(ioa_cfg);
10259 pci_set_master(pdev);
10260 if (pci_channel_offline(pdev)) {
10261 rc = -EIO;
10262 goto out_msi_disable;
10263 }
10264 }
10265
10266 if (pdev->msi_enabled || pdev->msix_enabled) {
10267 rc = ipr_test_msi(ioa_cfg, pdev);
10268 switch (rc) {
10269 case 0:
10270 dev_info(&pdev->dev,
10271 "Request for %d MSI%ss succeeded.", ioa_cfg->nvectors,
10272 pdev->msix_enabled ? "-X" : "");
10273 break;
10274 case -EOPNOTSUPP:
10275 ipr_wait_for_pci_err_recovery(ioa_cfg);
10276 pci_free_irq_vectors(pdev);
10277
10278 ioa_cfg->nvectors = 1;
10279 ioa_cfg->clear_isr = 1;
10280 break;
10281 default:
10282 goto out_msi_disable;
10283 }
10284 }
10285
10286 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors,
10287 (unsigned int)num_online_cpus(),
10288 (unsigned int)IPR_MAX_HRRQ_NUM);
10289
10290 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
10291 goto out_msi_disable;
10292
10293 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
10294 goto out_msi_disable;
10295
10296 rc = ipr_alloc_mem(ioa_cfg);
10297 if (rc < 0) {
10298 dev_err(&pdev->dev,
10299 "Couldn't allocate enough memory for device driver!\n");
10300 goto out_msi_disable;
10301 }
10302
10303 /* Save away PCI config space for use following IOA reset */
10304 rc = pci_save_state(pdev);
10305
10306 if (rc != PCIBIOS_SUCCESSFUL) {
10307 dev_err(&pdev->dev, "Failed to save PCI config space\n");
10308 rc = -EIO;
10309 goto cleanup_nolog;
10310 }
10311
10312 /*
10313 * If HRRQ updated interrupt is not masked, or reset alert is set,
10314 * the card is in an unknown state and needs a hard reset
10315 */
10316 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
10317 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
10318 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
10319 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
10320 ioa_cfg->needs_hard_reset = 1;
10321 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
10322 ioa_cfg->needs_hard_reset = 1;
10323 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
10324 ioa_cfg->ioa_unit_checked = 1;
10325
10326 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10327 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10328 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10329
10330 if (pdev->msi_enabled || pdev->msix_enabled) {
10331 name_msi_vectors(ioa_cfg);
10332 rc = request_irq(pci_irq_vector(pdev, 0), ipr_isr, 0,
10333 ioa_cfg->vectors_info[0].desc,
10334 &ioa_cfg->hrrq[0]);
10335 if (!rc)
10336 rc = ipr_request_other_msi_irqs(ioa_cfg, pdev);
10337 } else {
10338 rc = request_irq(pdev->irq, ipr_isr,
10339 IRQF_SHARED,
10340 IPR_NAME, &ioa_cfg->hrrq[0]);
10341 }
10342 if (rc) {
10343 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
10344 pdev->irq, rc);
10345 goto cleanup_nolog;
10346 }
10347
10348 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
10349 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
10350 ioa_cfg->needs_warm_reset = 1;
10351 ioa_cfg->reset = ipr_reset_slot_reset;
10352
10353 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d",
10354 WQ_MEM_RECLAIM, host->host_no);
10355
10356 if (!ioa_cfg->reset_work_q) {
10357 dev_err(&pdev->dev, "Couldn't register reset workqueue\n");
10358 rc = -ENOMEM;
10359 goto out_free_irq;
10360 }
10361 } else
10362 ioa_cfg->reset = ipr_reset_start_bist;
10363
10364 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10365 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
10366 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10367
10368 LEAVE;
10369 out:
10370 return rc;
10371
10372 out_free_irq:
10373 ipr_free_irqs(ioa_cfg);
10374 cleanup_nolog:
10375 ipr_free_mem(ioa_cfg);
10376 out_msi_disable:
10377 ipr_wait_for_pci_err_recovery(ioa_cfg);
10378 pci_free_irq_vectors(pdev);
10379 cleanup_nomem:
10380 iounmap(ipr_regs);
10381 out_disable:
10382 pci_disable_device(pdev);
10383 out_release_regions:
10384 pci_release_regions(pdev);
10385 out_scsi_host_put:
10386 scsi_host_put(host);
10387 goto out;
10388 }
10389
10390 /**
10391 * ipr_initiate_ioa_bringdown - Bring down an adapter
10392 * @ioa_cfg: ioa config struct
10393 * @shutdown_type: shutdown type
10394 *
10395 * Description: This function will initiate bringing down the adapter.
10396 * This consists of issuing an IOA shutdown to the adapter
10397 * to flush the cache, and running BIST.
10398 * If the caller needs to wait on the completion of the reset,
10399 * the caller must sleep on the reset_wait_q.
10400 *
10401 * Return value:
10402 * none
10403 **/
10404 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
10405 enum ipr_shutdown_type shutdown_type)
10406 {
10407 ENTER;
10408 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
10409 ioa_cfg->sdt_state = ABORT_DUMP;
10410 ioa_cfg->reset_retries = 0;
10411 ioa_cfg->in_ioa_bringdown = 1;
10412 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
10413 LEAVE;
10414 }
10415
10416 /**
10417 * __ipr_remove - Remove a single adapter
10418 * @pdev: pci device struct
10419 *
10420 * Adapter hot plug remove entry point.
10421 *
10422 * Return value:
10423 * none
10424 **/
10425 static void __ipr_remove(struct pci_dev *pdev)
10426 {
10427 unsigned long host_lock_flags = 0;
10428 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10429 int i;
10430 unsigned long driver_lock_flags;
10431 ENTER;
10432
10433 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10434 while (ioa_cfg->in_reset_reload) {
10435 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10436 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10437 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10438 }
10439
10440 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
10441 spin_lock(&ioa_cfg->hrrq[i]._lock);
10442 ioa_cfg->hrrq[i].removing_ioa = 1;
10443 spin_unlock(&ioa_cfg->hrrq[i]._lock);
10444 }
10445 wmb();
10446 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
10447
10448 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10449 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10450 flush_work(&ioa_cfg->work_q);
10451 if (ioa_cfg->reset_work_q)
10452 flush_workqueue(ioa_cfg->reset_work_q);
10453 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
10454 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10455
10456 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10457 list_del(&ioa_cfg->queue);
10458 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10459
10460 if (ioa_cfg->sdt_state == ABORT_DUMP)
10461 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
10462 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10463
10464 ipr_free_all_resources(ioa_cfg);
10465
10466 LEAVE;
10467 }
10468
10469 /**
10470 * ipr_remove - IOA hot plug remove entry point
10471 * @pdev: pci device struct
10472 *
10473 * Adapter hot plug remove entry point.
10474 *
10475 * Return value:
10476 * none
10477 **/
10478 static void ipr_remove(struct pci_dev *pdev)
10479 {
10480 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10481
10482 ENTER;
10483
10484 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10485 &ipr_trace_attr);
10486 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10487 &ipr_dump_attr);
10488 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj,
10489 &ipr_ioa_async_err_log);
10490 scsi_remove_host(ioa_cfg->host);
10491
10492 __ipr_remove(pdev);
10493
10494 LEAVE;
10495 }
10496
10497 /**
10498 * ipr_probe - Adapter hot plug add entry point
10499 *
10500 * Return value:
10501 * 0 on success / non-zero on failure
10502 **/
10503 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
10504 {
10505 struct ipr_ioa_cfg *ioa_cfg;
10506 unsigned long flags;
10507 int rc, i;
10508
10509 rc = ipr_probe_ioa(pdev, dev_id);
10510
10511 if (rc)
10512 return rc;
10513
10514 ioa_cfg = pci_get_drvdata(pdev);
10515 rc = ipr_probe_ioa_part2(ioa_cfg);
10516
10517 if (rc) {
10518 __ipr_remove(pdev);
10519 return rc;
10520 }
10521
10522 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
10523
10524 if (rc) {
10525 __ipr_remove(pdev);
10526 return rc;
10527 }
10528
10529 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
10530 &ipr_trace_attr);
10531
10532 if (rc) {
10533 scsi_remove_host(ioa_cfg->host);
10534 __ipr_remove(pdev);
10535 return rc;
10536 }
10537
10538 rc = sysfs_create_bin_file(&ioa_cfg->host->shost_dev.kobj,
10539 &ipr_ioa_async_err_log);
10540
10541 if (rc) {
10542 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10543 &ipr_dump_attr);
10544 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10545 &ipr_trace_attr);
10546 scsi_remove_host(ioa_cfg->host);
10547 __ipr_remove(pdev);
10548 return rc;
10549 }
10550
10551 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
10552 &ipr_dump_attr);
10553
10554 if (rc) {
10555 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj,
10556 &ipr_ioa_async_err_log);
10557 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10558 &ipr_trace_attr);
10559 scsi_remove_host(ioa_cfg->host);
10560 __ipr_remove(pdev);
10561 return rc;
10562 }
10563 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10564 ioa_cfg->scan_enabled = 1;
10565 schedule_work(&ioa_cfg->work_q);
10566 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10567
10568 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight;
10569
10570 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10571 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
10572 irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
10573 ioa_cfg->iopoll_weight, ipr_iopoll);
10574 }
10575 }
10576
10577 scsi_scan_host(ioa_cfg->host);
10578
10579 return 0;
10580 }
10581
10582 /**
10583 * ipr_shutdown - Shutdown handler.
10584 * @pdev: pci device struct
10585 *
10586 * This function is invoked upon system shutdown/reboot. It will issue
10587 * an adapter shutdown to the adapter to flush the write cache.
10588 *
10589 * Return value:
10590 * none
10591 **/
10592 static void ipr_shutdown(struct pci_dev *pdev)
10593 {
10594 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10595 unsigned long lock_flags = 0;
10596 enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL;
10597 int i;
10598
10599 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10600 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10601 ioa_cfg->iopoll_weight = 0;
10602 for (i = 1; i < ioa_cfg->hrrq_num; i++)
10603 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
10604 }
10605
10606 while (ioa_cfg->in_reset_reload) {
10607 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10608 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10609 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10610 }
10611
10612 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64)
10613 shutdown_type = IPR_SHUTDOWN_QUIESCE;
10614
10615 ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type);
10616 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10617 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10618 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) {
10619 ipr_free_irqs(ioa_cfg);
10620 pci_disable_device(ioa_cfg->pdev);
10621 }
10622 }
10623
10624 static struct pci_device_id ipr_pci_table[] = {
10625 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10626 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
10627 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10628 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
10629 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10630 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
10631 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10632 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
10633 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10634 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
10635 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10636 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
10637 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10638 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
10639 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10640 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
10641 IPR_USE_LONG_TRANSOP_TIMEOUT },
10642 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10643 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10644 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10645 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10646 IPR_USE_LONG_TRANSOP_TIMEOUT },
10647 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10648 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10649 IPR_USE_LONG_TRANSOP_TIMEOUT },
10650 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10651 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10652 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10653 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10654 IPR_USE_LONG_TRANSOP_TIMEOUT},
10655 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10656 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10657 IPR_USE_LONG_TRANSOP_TIMEOUT },
10658 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10659 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
10660 IPR_USE_LONG_TRANSOP_TIMEOUT },
10661 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10662 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
10663 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10664 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
10665 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10666 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
10667 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
10668 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
10669 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
10670 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10671 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
10672 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10673 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
10674 IPR_USE_LONG_TRANSOP_TIMEOUT },
10675 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10676 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
10677 IPR_USE_LONG_TRANSOP_TIMEOUT },
10678 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10679 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
10680 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10681 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
10682 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10683 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
10684 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10685 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 },
10686 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10687 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
10688 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10689 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
10690 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10691 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
10692 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10693 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
10694 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10695 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
10696 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10697 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 },
10698 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10699 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
10700 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10701 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 },
10702 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10703 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 },
10704 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10705 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 },
10706 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10707 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 },
10708 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10709 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 },
10710 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10711 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 },
10712 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10713 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 },
10714 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10715 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 },
10716 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10717 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 },
10718 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10719 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 },
10720 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10721 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 },
10722 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10723 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 },
10724 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10725 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 },
10726 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10727 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 },
10728 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10729 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 },
10730 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE,
10731 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580A, 0, 0, 0 },
10732 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE,
10733 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580B, 0, 0, 0 },
10734 { }
10735 };
10736 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
10737
10738 static const struct pci_error_handlers ipr_err_handler = {
10739 .error_detected = ipr_pci_error_detected,
10740 .mmio_enabled = ipr_pci_mmio_enabled,
10741 .slot_reset = ipr_pci_slot_reset,
10742 };
10743
10744 static struct pci_driver ipr_driver = {
10745 .name = IPR_NAME,
10746 .id_table = ipr_pci_table,
10747 .probe = ipr_probe,
10748 .remove = ipr_remove,
10749 .shutdown = ipr_shutdown,
10750 .err_handler = &ipr_err_handler,
10751 };
10752
10753 /**
10754 * ipr_halt_done - Shutdown prepare completion
10755 *
10756 * Return value:
10757 * none
10758 **/
10759 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
10760 {
10761 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
10762 }
10763
10764 /**
10765 * ipr_halt - Issue shutdown prepare to all adapters
10766 *
10767 * Return value:
10768 * NOTIFY_OK on success / NOTIFY_DONE on failure
10769 **/
10770 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
10771 {
10772 struct ipr_cmnd *ipr_cmd;
10773 struct ipr_ioa_cfg *ioa_cfg;
10774 unsigned long flags = 0, driver_lock_flags;
10775
10776 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
10777 return NOTIFY_DONE;
10778
10779 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10780
10781 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
10782 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10783 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds ||
10784 (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) {
10785 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10786 continue;
10787 }
10788
10789 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
10790 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
10791 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
10792 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
10793 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
10794
10795 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
10796 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10797 }
10798 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10799
10800 return NOTIFY_OK;
10801 }
10802
10803 static struct notifier_block ipr_notifier = {
10804 ipr_halt, NULL, 0
10805 };
10806
10807 /**
10808 * ipr_init - Module entry point
10809 *
10810 * Return value:
10811 * 0 on success / negative value on failure
10812 **/
10813 static int __init ipr_init(void)
10814 {
10815 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
10816 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
10817
10818 register_reboot_notifier(&ipr_notifier);
10819 return pci_register_driver(&ipr_driver);
10820 }
10821
10822 /**
10823 * ipr_exit - Module unload
10824 *
10825 * Module unload entry point.
10826 *
10827 * Return value:
10828 * none
10829 **/
10830 static void __exit ipr_exit(void)
10831 {
10832 unregister_reboot_notifier(&ipr_notifier);
10833 pci_unregister_driver(&ipr_driver);
10834 }
10835
10836 module_init(ipr_init);
10837 module_exit(ipr_exit);
Linux with added FPC-III support