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[mirror_ubuntu-artful-kernel.git] / drivers / scsi / ipr.c
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 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
439 "3140: Device bus not ready to ready transition"},
440 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
441 "FFFB: SCSI bus was reset"},
442 {0x06290500, 0, 0,
443 "FFFE: SCSI bus transition to single ended"},
444 {0x06290600, 0, 0,
445 "FFFE: SCSI bus transition to LVD"},
446 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
447 "FFFB: SCSI bus was reset by another initiator"},
448 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
449 "3029: A device replacement has occurred"},
450 {0x063F8300, 0, IPR_DEFAULT_LOG_LEVEL,
451 "4102: Device bus fabric performance degradation"},
452 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
453 "9051: IOA cache data exists for a missing or failed device"},
454 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
455 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
456 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
457 "9025: Disk unit is not supported at its physical location"},
458 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
459 "3020: IOA detected a SCSI bus configuration error"},
460 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
461 "3150: SCSI bus configuration error"},
462 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
463 "9074: Asymmetric advanced function disk configuration"},
464 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
465 "4040: Incomplete multipath connection between IOA and enclosure"},
466 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
467 "4041: Incomplete multipath connection between enclosure and device"},
468 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
469 "9075: Incomplete multipath connection between IOA and remote IOA"},
470 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
471 "9076: Configuration error, missing remote IOA"},
472 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
473 "4050: Enclosure does not support a required multipath function"},
474 {0x06679800, 0, IPR_DEFAULT_LOG_LEVEL,
475 "4121: Configuration error, required cable is missing"},
476 {0x06679900, 0, IPR_DEFAULT_LOG_LEVEL,
477 "4122: Cable is not plugged into the correct location on remote IOA"},
478 {0x06679A00, 0, IPR_DEFAULT_LOG_LEVEL,
479 "4123: Configuration error, invalid cable vital product data"},
480 {0x06679B00, 0, IPR_DEFAULT_LOG_LEVEL,
481 "4124: Configuration error, both cable ends are plugged into the same IOA"},
482 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
483 "4070: Logically bad block written on device"},
484 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
485 "9041: Array protection temporarily suspended"},
486 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
487 "9042: Corrupt array parity detected on specified device"},
488 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
489 "9030: Array no longer protected due to missing or failed disk unit"},
490 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
491 "9071: Link operational transition"},
492 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
493 "9072: Link not operational transition"},
494 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
495 "9032: Array exposed but still protected"},
496 {0x066B8300, 0, IPR_DEBUG_LOG_LEVEL,
497 "70DD: Device forced failed by disrupt device command"},
498 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
499 "4061: Multipath redundancy level got better"},
500 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
501 "4060: Multipath redundancy level got worse"},
502 {0x06808100, 0, IPR_DEBUG_LOG_LEVEL,
503 "9083: Device raw mode enabled"},
504 {0x06808200, 0, IPR_DEBUG_LOG_LEVEL,
505 "9084: Device raw mode disabled"},
506 {0x07270000, 0, 0,
507 "Failure due to other device"},
508 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
509 "9008: IOA does not support functions expected by devices"},
510 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
511 "9010: Cache data associated with attached devices cannot be found"},
512 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
513 "9011: Cache data belongs to devices other than those attached"},
514 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
515 "9020: Array missing 2 or more devices with only 1 device present"},
516 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
517 "9021: Array missing 2 or more devices with 2 or more devices present"},
518 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
519 "9022: Exposed array is missing a required device"},
520 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
521 "9023: Array member(s) not at required physical locations"},
522 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
523 "9024: Array not functional due to present hardware configuration"},
524 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
525 "9026: Array not functional due to present hardware configuration"},
526 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
527 "9027: Array is missing a device and parity is out of sync"},
528 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
529 "9028: Maximum number of arrays already exist"},
530 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
531 "9050: Required cache data cannot be located for a disk unit"},
532 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
533 "9052: Cache data exists for a device that has been modified"},
534 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
535 "9054: IOA resources not available due to previous problems"},
536 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
537 "9092: Disk unit requires initialization before use"},
538 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
539 "9029: Incorrect hardware configuration change has been detected"},
540 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
541 "9060: One or more disk pairs are missing from an array"},
542 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
543 "9061: One or more disks are missing from an array"},
544 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
545 "9062: One or more disks are missing from an array"},
546 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
547 "9063: Maximum number of functional arrays has been exceeded"},
548 {0x07279A00, 0, 0,
549 "Data protect, other volume set problem"},
550 {0x0B260000, 0, 0,
551 "Aborted command, invalid descriptor"},
552 {0x0B3F9000, 0, 0,
553 "Target operating conditions have changed, dual adapter takeover"},
554 {0x0B530200, 0, 0,
555 "Aborted command, medium removal prevented"},
556 {0x0B5A0000, 0, 0,
557 "Command terminated by host"},
558 {0x0B5B8000, 0, 0,
559 "Aborted command, command terminated by host"}
560 };
561
562 static const struct ipr_ses_table_entry ipr_ses_table[] = {
563 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
564 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
565 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
566 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
567 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
568 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
569 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
570 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
571 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
572 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
573 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
574 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
575 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
576 };
577
578 /*
579 * Function Prototypes
580 */
581 static int ipr_reset_alert(struct ipr_cmnd *);
582 static void ipr_process_ccn(struct ipr_cmnd *);
583 static void ipr_process_error(struct ipr_cmnd *);
584 static void ipr_reset_ioa_job(struct ipr_cmnd *);
585 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
586 enum ipr_shutdown_type);
587
588 #ifdef CONFIG_SCSI_IPR_TRACE
589 /**
590 * ipr_trc_hook - Add a trace entry to the driver trace
591 * @ipr_cmd: ipr command struct
592 * @type: trace type
593 * @add_data: additional data
594 *
595 * Return value:
596 * none
597 **/
598 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
599 u8 type, u32 add_data)
600 {
601 struct ipr_trace_entry *trace_entry;
602 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
603 unsigned int trace_index;
604
605 trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK;
606 trace_entry = &ioa_cfg->trace[trace_index];
607 trace_entry->time = jiffies;
608 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
609 trace_entry->type = type;
610 if (ipr_cmd->ioa_cfg->sis64)
611 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
612 else
613 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
614 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
615 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
616 trace_entry->u.add_data = add_data;
617 wmb();
618 }
619 #else
620 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0)
621 #endif
622
623 /**
624 * ipr_lock_and_done - Acquire lock and complete command
625 * @ipr_cmd: ipr command struct
626 *
627 * Return value:
628 * none
629 **/
630 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd)
631 {
632 unsigned long lock_flags;
633 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
634
635 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
636 ipr_cmd->done(ipr_cmd);
637 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
638 }
639
640 /**
641 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
642 * @ipr_cmd: ipr command struct
643 *
644 * Return value:
645 * none
646 **/
647 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
648 {
649 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
650 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
651 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
652 dma_addr_t dma_addr = ipr_cmd->dma_addr;
653 int hrrq_id;
654
655 hrrq_id = ioarcb->cmd_pkt.hrrq_id;
656 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
657 ioarcb->cmd_pkt.hrrq_id = hrrq_id;
658 ioarcb->data_transfer_length = 0;
659 ioarcb->read_data_transfer_length = 0;
660 ioarcb->ioadl_len = 0;
661 ioarcb->read_ioadl_len = 0;
662
663 if (ipr_cmd->ioa_cfg->sis64) {
664 ioarcb->u.sis64_addr_data.data_ioadl_addr =
665 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
666 ioasa64->u.gata.status = 0;
667 } else {
668 ioarcb->write_ioadl_addr =
669 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
670 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
671 ioasa->u.gata.status = 0;
672 }
673
674 ioasa->hdr.ioasc = 0;
675 ioasa->hdr.residual_data_len = 0;
676 ipr_cmd->scsi_cmd = NULL;
677 ipr_cmd->qc = NULL;
678 ipr_cmd->sense_buffer[0] = 0;
679 ipr_cmd->dma_use_sg = 0;
680 }
681
682 /**
683 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
684 * @ipr_cmd: ipr command struct
685 *
686 * Return value:
687 * none
688 **/
689 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd,
690 void (*fast_done) (struct ipr_cmnd *))
691 {
692 ipr_reinit_ipr_cmnd(ipr_cmd);
693 ipr_cmd->u.scratch = 0;
694 ipr_cmd->sibling = NULL;
695 ipr_cmd->eh_comp = NULL;
696 ipr_cmd->fast_done = fast_done;
697 init_timer(&ipr_cmd->timer);
698 }
699
700 /**
701 * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
702 * @ioa_cfg: ioa config struct
703 *
704 * Return value:
705 * pointer to ipr command struct
706 **/
707 static
708 struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue *hrrq)
709 {
710 struct ipr_cmnd *ipr_cmd = NULL;
711
712 if (likely(!list_empty(&hrrq->hrrq_free_q))) {
713 ipr_cmd = list_entry(hrrq->hrrq_free_q.next,
714 struct ipr_cmnd, queue);
715 list_del(&ipr_cmd->queue);
716 }
717
718
719 return ipr_cmd;
720 }
721
722 /**
723 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it
724 * @ioa_cfg: ioa config struct
725 *
726 * Return value:
727 * pointer to ipr command struct
728 **/
729 static
730 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
731 {
732 struct ipr_cmnd *ipr_cmd =
733 __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]);
734 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
735 return ipr_cmd;
736 }
737
738 /**
739 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
740 * @ioa_cfg: ioa config struct
741 * @clr_ints: interrupts to clear
742 *
743 * This function masks all interrupts on the adapter, then clears the
744 * interrupts specified in the mask
745 *
746 * Return value:
747 * none
748 **/
749 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
750 u32 clr_ints)
751 {
752 volatile u32 int_reg;
753 int i;
754
755 /* Stop new interrupts */
756 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
757 spin_lock(&ioa_cfg->hrrq[i]._lock);
758 ioa_cfg->hrrq[i].allow_interrupts = 0;
759 spin_unlock(&ioa_cfg->hrrq[i]._lock);
760 }
761 wmb();
762
763 /* Set interrupt mask to stop all new interrupts */
764 if (ioa_cfg->sis64)
765 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
766 else
767 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
768
769 /* Clear any pending interrupts */
770 if (ioa_cfg->sis64)
771 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
772 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
773 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
774 }
775
776 /**
777 * ipr_save_pcix_cmd_reg - Save PCI-X command register
778 * @ioa_cfg: ioa config struct
779 *
780 * Return value:
781 * 0 on success / -EIO on failure
782 **/
783 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
784 {
785 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
786
787 if (pcix_cmd_reg == 0)
788 return 0;
789
790 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
791 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
792 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
793 return -EIO;
794 }
795
796 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
797 return 0;
798 }
799
800 /**
801 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
802 * @ioa_cfg: ioa config struct
803 *
804 * Return value:
805 * 0 on success / -EIO on failure
806 **/
807 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
808 {
809 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
810
811 if (pcix_cmd_reg) {
812 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
813 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
814 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
815 return -EIO;
816 }
817 }
818
819 return 0;
820 }
821
822 /**
823 * __ipr_sata_eh_done - done function for aborted SATA commands
824 * @ipr_cmd: ipr command struct
825 *
826 * This function is invoked for ops generated to SATA
827 * devices which are being aborted.
828 *
829 * Return value:
830 * none
831 **/
832 static void __ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
833 {
834 struct ata_queued_cmd *qc = ipr_cmd->qc;
835 struct ipr_sata_port *sata_port = qc->ap->private_data;
836
837 qc->err_mask |= AC_ERR_OTHER;
838 sata_port->ioasa.status |= ATA_BUSY;
839 ata_qc_complete(qc);
840 if (ipr_cmd->eh_comp)
841 complete(ipr_cmd->eh_comp);
842 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
843 }
844
845 /**
846 * ipr_sata_eh_done - done function for aborted SATA commands
847 * @ipr_cmd: ipr command struct
848 *
849 * This function is invoked for ops generated to SATA
850 * devices which are being aborted.
851 *
852 * Return value:
853 * none
854 **/
855 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
856 {
857 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
858 unsigned long hrrq_flags;
859
860 spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
861 __ipr_sata_eh_done(ipr_cmd);
862 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
863 }
864
865 /**
866 * __ipr_scsi_eh_done - mid-layer done function for aborted ops
867 * @ipr_cmd: ipr command struct
868 *
869 * This function is invoked by the interrupt handler for
870 * ops generated by the SCSI mid-layer which are being aborted.
871 *
872 * Return value:
873 * none
874 **/
875 static void __ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
876 {
877 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
878
879 scsi_cmd->result |= (DID_ERROR << 16);
880
881 scsi_dma_unmap(ipr_cmd->scsi_cmd);
882 scsi_cmd->scsi_done(scsi_cmd);
883 if (ipr_cmd->eh_comp)
884 complete(ipr_cmd->eh_comp);
885 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
886 }
887
888 /**
889 * ipr_scsi_eh_done - mid-layer done function for aborted ops
890 * @ipr_cmd: ipr command struct
891 *
892 * This function is invoked by the interrupt handler for
893 * ops generated by the SCSI mid-layer which are being aborted.
894 *
895 * Return value:
896 * none
897 **/
898 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
899 {
900 unsigned long hrrq_flags;
901 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
902
903 spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
904 __ipr_scsi_eh_done(ipr_cmd);
905 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
906 }
907
908 /**
909 * ipr_fail_all_ops - Fails all outstanding ops.
910 * @ioa_cfg: ioa config struct
911 *
912 * This function fails all outstanding ops.
913 *
914 * Return value:
915 * none
916 **/
917 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
918 {
919 struct ipr_cmnd *ipr_cmd, *temp;
920 struct ipr_hrr_queue *hrrq;
921
922 ENTER;
923 for_each_hrrq(hrrq, ioa_cfg) {
924 spin_lock(&hrrq->_lock);
925 list_for_each_entry_safe(ipr_cmd,
926 temp, &hrrq->hrrq_pending_q, queue) {
927 list_del(&ipr_cmd->queue);
928
929 ipr_cmd->s.ioasa.hdr.ioasc =
930 cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
931 ipr_cmd->s.ioasa.hdr.ilid =
932 cpu_to_be32(IPR_DRIVER_ILID);
933
934 if (ipr_cmd->scsi_cmd)
935 ipr_cmd->done = __ipr_scsi_eh_done;
936 else if (ipr_cmd->qc)
937 ipr_cmd->done = __ipr_sata_eh_done;
938
939 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH,
940 IPR_IOASC_IOA_WAS_RESET);
941 del_timer(&ipr_cmd->timer);
942 ipr_cmd->done(ipr_cmd);
943 }
944 spin_unlock(&hrrq->_lock);
945 }
946 LEAVE;
947 }
948
949 /**
950 * ipr_send_command - Send driver initiated requests.
951 * @ipr_cmd: ipr command struct
952 *
953 * This function sends a command to the adapter using the correct write call.
954 * In the case of sis64, calculate the ioarcb size required. Then or in the
955 * appropriate bits.
956 *
957 * Return value:
958 * none
959 **/
960 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
961 {
962 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
963 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
964
965 if (ioa_cfg->sis64) {
966 /* The default size is 256 bytes */
967 send_dma_addr |= 0x1;
968
969 /* If the number of ioadls * size of ioadl > 128 bytes,
970 then use a 512 byte ioarcb */
971 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
972 send_dma_addr |= 0x4;
973 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
974 } else
975 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
976 }
977
978 /**
979 * ipr_do_req - Send driver initiated requests.
980 * @ipr_cmd: ipr command struct
981 * @done: done function
982 * @timeout_func: timeout function
983 * @timeout: timeout value
984 *
985 * This function sends the specified command to the adapter with the
986 * timeout given. The done function is invoked on command completion.
987 *
988 * Return value:
989 * none
990 **/
991 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
992 void (*done) (struct ipr_cmnd *),
993 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
994 {
995 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
996
997 ipr_cmd->done = done;
998
999 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
1000 ipr_cmd->timer.expires = jiffies + timeout;
1001 ipr_cmd->timer.function = (void (*)(unsigned long))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 ipr_cmnd *ipr_cmd),
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 ipr_cmnd *ipr_cmd)
2668 {
2669 unsigned long lock_flags = 0;
2670 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2671
2672 ENTER;
2673 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2674
2675 ioa_cfg->errors_logged++;
2676 dev_err(&ioa_cfg->pdev->dev,
2677 "Adapter being reset due to command timeout.\n");
2678
2679 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2680 ioa_cfg->sdt_state = GET_DUMP;
2681
2682 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2683 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2684
2685 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2686 LEAVE;
2687 }
2688
2689 /**
2690 * ipr_oper_timeout - Adapter timed out transitioning to operational
2691 * @ipr_cmd: ipr command struct
2692 *
2693 * This function blocks host requests and initiates an
2694 * adapter reset.
2695 *
2696 * Return value:
2697 * none
2698 **/
2699 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2700 {
2701 unsigned long lock_flags = 0;
2702 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2703
2704 ENTER;
2705 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2706
2707 ioa_cfg->errors_logged++;
2708 dev_err(&ioa_cfg->pdev->dev,
2709 "Adapter timed out transitioning to operational.\n");
2710
2711 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2712 ioa_cfg->sdt_state = GET_DUMP;
2713
2714 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2715 if (ipr_fastfail)
2716 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2717 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2718 }
2719
2720 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2721 LEAVE;
2722 }
2723
2724 /**
2725 * ipr_find_ses_entry - Find matching SES in SES table
2726 * @res: resource entry struct of SES
2727 *
2728 * Return value:
2729 * pointer to SES table entry / NULL on failure
2730 **/
2731 static const struct ipr_ses_table_entry *
2732 ipr_find_ses_entry(struct ipr_resource_entry *res)
2733 {
2734 int i, j, matches;
2735 struct ipr_std_inq_vpids *vpids;
2736 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2737
2738 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2739 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2740 if (ste->compare_product_id_byte[j] == 'X') {
2741 vpids = &res->std_inq_data.vpids;
2742 if (vpids->product_id[j] == ste->product_id[j])
2743 matches++;
2744 else
2745 break;
2746 } else
2747 matches++;
2748 }
2749
2750 if (matches == IPR_PROD_ID_LEN)
2751 return ste;
2752 }
2753
2754 return NULL;
2755 }
2756
2757 /**
2758 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2759 * @ioa_cfg: ioa config struct
2760 * @bus: SCSI bus
2761 * @bus_width: bus width
2762 *
2763 * Return value:
2764 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2765 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2766 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2767 * max 160MHz = max 320MB/sec).
2768 **/
2769 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2770 {
2771 struct ipr_resource_entry *res;
2772 const struct ipr_ses_table_entry *ste;
2773 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2774
2775 /* Loop through each config table entry in the config table buffer */
2776 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2777 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2778 continue;
2779
2780 if (bus != res->bus)
2781 continue;
2782
2783 if (!(ste = ipr_find_ses_entry(res)))
2784 continue;
2785
2786 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2787 }
2788
2789 return max_xfer_rate;
2790 }
2791
2792 /**
2793 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2794 * @ioa_cfg: ioa config struct
2795 * @max_delay: max delay in micro-seconds to wait
2796 *
2797 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2798 *
2799 * Return value:
2800 * 0 on success / other on failure
2801 **/
2802 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2803 {
2804 volatile u32 pcii_reg;
2805 int delay = 1;
2806
2807 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2808 while (delay < max_delay) {
2809 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2810
2811 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2812 return 0;
2813
2814 /* udelay cannot be used if delay is more than a few milliseconds */
2815 if ((delay / 1000) > MAX_UDELAY_MS)
2816 mdelay(delay / 1000);
2817 else
2818 udelay(delay);
2819
2820 delay += delay;
2821 }
2822 return -EIO;
2823 }
2824
2825 /**
2826 * ipr_get_sis64_dump_data_section - Dump IOA memory
2827 * @ioa_cfg: ioa config struct
2828 * @start_addr: adapter address to dump
2829 * @dest: destination kernel buffer
2830 * @length_in_words: length to dump in 4 byte words
2831 *
2832 * Return value:
2833 * 0 on success
2834 **/
2835 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2836 u32 start_addr,
2837 __be32 *dest, u32 length_in_words)
2838 {
2839 int i;
2840
2841 for (i = 0; i < length_in_words; i++) {
2842 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2843 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2844 dest++;
2845 }
2846
2847 return 0;
2848 }
2849
2850 /**
2851 * ipr_get_ldump_data_section - Dump IOA memory
2852 * @ioa_cfg: ioa config struct
2853 * @start_addr: adapter address to dump
2854 * @dest: destination kernel buffer
2855 * @length_in_words: length to dump in 4 byte words
2856 *
2857 * Return value:
2858 * 0 on success / -EIO on failure
2859 **/
2860 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2861 u32 start_addr,
2862 __be32 *dest, u32 length_in_words)
2863 {
2864 volatile u32 temp_pcii_reg;
2865 int i, delay = 0;
2866
2867 if (ioa_cfg->sis64)
2868 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2869 dest, length_in_words);
2870
2871 /* Write IOA interrupt reg starting LDUMP state */
2872 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2873 ioa_cfg->regs.set_uproc_interrupt_reg32);
2874
2875 /* Wait for IO debug acknowledge */
2876 if (ipr_wait_iodbg_ack(ioa_cfg,
2877 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2878 dev_err(&ioa_cfg->pdev->dev,
2879 "IOA dump long data transfer timeout\n");
2880 return -EIO;
2881 }
2882
2883 /* Signal LDUMP interlocked - clear IO debug ack */
2884 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2885 ioa_cfg->regs.clr_interrupt_reg);
2886
2887 /* Write Mailbox with starting address */
2888 writel(start_addr, ioa_cfg->ioa_mailbox);
2889
2890 /* Signal address valid - clear IOA Reset alert */
2891 writel(IPR_UPROCI_RESET_ALERT,
2892 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2893
2894 for (i = 0; i < length_in_words; i++) {
2895 /* Wait for IO debug acknowledge */
2896 if (ipr_wait_iodbg_ack(ioa_cfg,
2897 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2898 dev_err(&ioa_cfg->pdev->dev,
2899 "IOA dump short data transfer timeout\n");
2900 return -EIO;
2901 }
2902
2903 /* Read data from mailbox and increment destination pointer */
2904 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2905 dest++;
2906
2907 /* For all but the last word of data, signal data received */
2908 if (i < (length_in_words - 1)) {
2909 /* Signal dump data received - Clear IO debug Ack */
2910 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2911 ioa_cfg->regs.clr_interrupt_reg);
2912 }
2913 }
2914
2915 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2916 writel(IPR_UPROCI_RESET_ALERT,
2917 ioa_cfg->regs.set_uproc_interrupt_reg32);
2918
2919 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2920 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2921
2922 /* Signal dump data received - Clear IO debug Ack */
2923 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2924 ioa_cfg->regs.clr_interrupt_reg);
2925
2926 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2927 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2928 temp_pcii_reg =
2929 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2930
2931 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2932 return 0;
2933
2934 udelay(10);
2935 delay += 10;
2936 }
2937
2938 return 0;
2939 }
2940
2941 #ifdef CONFIG_SCSI_IPR_DUMP
2942 /**
2943 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2944 * @ioa_cfg: ioa config struct
2945 * @pci_address: adapter address
2946 * @length: length of data to copy
2947 *
2948 * Copy data from PCI adapter to kernel buffer.
2949 * Note: length MUST be a 4 byte multiple
2950 * Return value:
2951 * 0 on success / other on failure
2952 **/
2953 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2954 unsigned long pci_address, u32 length)
2955 {
2956 int bytes_copied = 0;
2957 int cur_len, rc, rem_len, rem_page_len, max_dump_size;
2958 __be32 *page;
2959 unsigned long lock_flags = 0;
2960 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2961
2962 if (ioa_cfg->sis64)
2963 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2964 else
2965 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2966
2967 while (bytes_copied < length &&
2968 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
2969 if (ioa_dump->page_offset >= PAGE_SIZE ||
2970 ioa_dump->page_offset == 0) {
2971 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2972
2973 if (!page) {
2974 ipr_trace;
2975 return bytes_copied;
2976 }
2977
2978 ioa_dump->page_offset = 0;
2979 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2980 ioa_dump->next_page_index++;
2981 } else
2982 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2983
2984 rem_len = length - bytes_copied;
2985 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2986 cur_len = min(rem_len, rem_page_len);
2987
2988 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2989 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2990 rc = -EIO;
2991 } else {
2992 rc = ipr_get_ldump_data_section(ioa_cfg,
2993 pci_address + bytes_copied,
2994 &page[ioa_dump->page_offset / 4],
2995 (cur_len / sizeof(u32)));
2996 }
2997 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2998
2999 if (!rc) {
3000 ioa_dump->page_offset += cur_len;
3001 bytes_copied += cur_len;
3002 } else {
3003 ipr_trace;
3004 break;
3005 }
3006 schedule();
3007 }
3008
3009 return bytes_copied;
3010 }
3011
3012 /**
3013 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
3014 * @hdr: dump entry header struct
3015 *
3016 * Return value:
3017 * nothing
3018 **/
3019 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
3020 {
3021 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
3022 hdr->num_elems = 1;
3023 hdr->offset = sizeof(*hdr);
3024 hdr->status = IPR_DUMP_STATUS_SUCCESS;
3025 }
3026
3027 /**
3028 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
3029 * @ioa_cfg: ioa config struct
3030 * @driver_dump: driver dump struct
3031 *
3032 * Return value:
3033 * nothing
3034 **/
3035 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
3036 struct ipr_driver_dump *driver_dump)
3037 {
3038 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3039
3040 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
3041 driver_dump->ioa_type_entry.hdr.len =
3042 sizeof(struct ipr_dump_ioa_type_entry) -
3043 sizeof(struct ipr_dump_entry_header);
3044 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3045 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
3046 driver_dump->ioa_type_entry.type = ioa_cfg->type;
3047 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
3048 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
3049 ucode_vpd->minor_release[1];
3050 driver_dump->hdr.num_entries++;
3051 }
3052
3053 /**
3054 * ipr_dump_version_data - Fill in the driver version in the dump.
3055 * @ioa_cfg: ioa config struct
3056 * @driver_dump: driver dump struct
3057 *
3058 * Return value:
3059 * nothing
3060 **/
3061 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
3062 struct ipr_driver_dump *driver_dump)
3063 {
3064 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
3065 driver_dump->version_entry.hdr.len =
3066 sizeof(struct ipr_dump_version_entry) -
3067 sizeof(struct ipr_dump_entry_header);
3068 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3069 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
3070 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
3071 driver_dump->hdr.num_entries++;
3072 }
3073
3074 /**
3075 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
3076 * @ioa_cfg: ioa config struct
3077 * @driver_dump: driver dump struct
3078 *
3079 * Return value:
3080 * nothing
3081 **/
3082 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
3083 struct ipr_driver_dump *driver_dump)
3084 {
3085 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
3086 driver_dump->trace_entry.hdr.len =
3087 sizeof(struct ipr_dump_trace_entry) -
3088 sizeof(struct ipr_dump_entry_header);
3089 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3090 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
3091 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
3092 driver_dump->hdr.num_entries++;
3093 }
3094
3095 /**
3096 * ipr_dump_location_data - Fill in the IOA location in the dump.
3097 * @ioa_cfg: ioa config struct
3098 * @driver_dump: driver dump struct
3099 *
3100 * Return value:
3101 * nothing
3102 **/
3103 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
3104 struct ipr_driver_dump *driver_dump)
3105 {
3106 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
3107 driver_dump->location_entry.hdr.len =
3108 sizeof(struct ipr_dump_location_entry) -
3109 sizeof(struct ipr_dump_entry_header);
3110 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3111 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
3112 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
3113 driver_dump->hdr.num_entries++;
3114 }
3115
3116 /**
3117 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
3118 * @ioa_cfg: ioa config struct
3119 * @dump: dump struct
3120 *
3121 * Return value:
3122 * nothing
3123 **/
3124 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
3125 {
3126 unsigned long start_addr, sdt_word;
3127 unsigned long lock_flags = 0;
3128 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
3129 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
3130 u32 num_entries, max_num_entries, start_off, end_off;
3131 u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
3132 struct ipr_sdt *sdt;
3133 int valid = 1;
3134 int i;
3135
3136 ENTER;
3137
3138 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3139
3140 if (ioa_cfg->sdt_state != READ_DUMP) {
3141 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3142 return;
3143 }
3144
3145 if (ioa_cfg->sis64) {
3146 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3147 ssleep(IPR_DUMP_DELAY_SECONDS);
3148 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3149 }
3150
3151 start_addr = readl(ioa_cfg->ioa_mailbox);
3152
3153 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
3154 dev_err(&ioa_cfg->pdev->dev,
3155 "Invalid dump table format: %lx\n", start_addr);
3156 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3157 return;
3158 }
3159
3160 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
3161
3162 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
3163
3164 /* Initialize the overall dump header */
3165 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
3166 driver_dump->hdr.num_entries = 1;
3167 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
3168 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
3169 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
3170 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
3171
3172 ipr_dump_version_data(ioa_cfg, driver_dump);
3173 ipr_dump_location_data(ioa_cfg, driver_dump);
3174 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
3175 ipr_dump_trace_data(ioa_cfg, driver_dump);
3176
3177 /* Update dump_header */
3178 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
3179
3180 /* IOA Dump entry */
3181 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
3182 ioa_dump->hdr.len = 0;
3183 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3184 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
3185
3186 /* First entries in sdt are actually a list of dump addresses and
3187 lengths to gather the real dump data. sdt represents the pointer
3188 to the ioa generated dump table. Dump data will be extracted based
3189 on entries in this table */
3190 sdt = &ioa_dump->sdt;
3191
3192 if (ioa_cfg->sis64) {
3193 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
3194 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
3195 } else {
3196 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
3197 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
3198 }
3199
3200 bytes_to_copy = offsetof(struct ipr_sdt, entry) +
3201 (max_num_entries * sizeof(struct ipr_sdt_entry));
3202 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
3203 bytes_to_copy / sizeof(__be32));
3204
3205 /* Smart Dump table is ready to use and the first entry is valid */
3206 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
3207 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
3208 dev_err(&ioa_cfg->pdev->dev,
3209 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
3210 rc, be32_to_cpu(sdt->hdr.state));
3211 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
3212 ioa_cfg->sdt_state = DUMP_OBTAINED;
3213 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3214 return;
3215 }
3216
3217 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
3218
3219 if (num_entries > max_num_entries)
3220 num_entries = max_num_entries;
3221
3222 /* Update dump length to the actual data to be copied */
3223 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
3224 if (ioa_cfg->sis64)
3225 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
3226 else
3227 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
3228
3229 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3230
3231 for (i = 0; i < num_entries; i++) {
3232 if (ioa_dump->hdr.len > max_dump_size) {
3233 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3234 break;
3235 }
3236
3237 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
3238 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3239 if (ioa_cfg->sis64)
3240 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3241 else {
3242 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3243 end_off = be32_to_cpu(sdt->entry[i].end_token);
3244
3245 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3246 bytes_to_copy = end_off - start_off;
3247 else
3248 valid = 0;
3249 }
3250 if (valid) {
3251 if (bytes_to_copy > max_dump_size) {
3252 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3253 continue;
3254 }
3255
3256 /* Copy data from adapter to driver buffers */
3257 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3258 bytes_to_copy);
3259
3260 ioa_dump->hdr.len += bytes_copied;
3261
3262 if (bytes_copied != bytes_to_copy) {
3263 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3264 break;
3265 }
3266 }
3267 }
3268 }
3269
3270 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3271
3272 /* Update dump_header */
3273 driver_dump->hdr.len += ioa_dump->hdr.len;
3274 wmb();
3275 ioa_cfg->sdt_state = DUMP_OBTAINED;
3276 LEAVE;
3277 }
3278
3279 #else
3280 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0)
3281 #endif
3282
3283 /**
3284 * ipr_release_dump - Free adapter dump memory
3285 * @kref: kref struct
3286 *
3287 * Return value:
3288 * nothing
3289 **/
3290 static void ipr_release_dump(struct kref *kref)
3291 {
3292 struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref);
3293 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3294 unsigned long lock_flags = 0;
3295 int i;
3296
3297 ENTER;
3298 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3299 ioa_cfg->dump = NULL;
3300 ioa_cfg->sdt_state = INACTIVE;
3301 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3302
3303 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3304 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3305
3306 vfree(dump->ioa_dump.ioa_data);
3307 kfree(dump);
3308 LEAVE;
3309 }
3310
3311 /**
3312 * ipr_worker_thread - Worker thread
3313 * @work: ioa config struct
3314 *
3315 * Called at task level from a work thread. This function takes care
3316 * of adding and removing device from the mid-layer as configuration
3317 * changes are detected by the adapter.
3318 *
3319 * Return value:
3320 * nothing
3321 **/
3322 static void ipr_worker_thread(struct work_struct *work)
3323 {
3324 unsigned long lock_flags;
3325 struct ipr_resource_entry *res;
3326 struct scsi_device *sdev;
3327 struct ipr_dump *dump;
3328 struct ipr_ioa_cfg *ioa_cfg =
3329 container_of(work, struct ipr_ioa_cfg, work_q);
3330 u8 bus, target, lun;
3331 int did_work;
3332
3333 ENTER;
3334 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3335
3336 if (ioa_cfg->sdt_state == READ_DUMP) {
3337 dump = ioa_cfg->dump;
3338 if (!dump) {
3339 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3340 return;
3341 }
3342 kref_get(&dump->kref);
3343 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3344 ipr_get_ioa_dump(ioa_cfg, dump);
3345 kref_put(&dump->kref, ipr_release_dump);
3346
3347 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3348 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout)
3349 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3350 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3351 return;
3352 }
3353
3354 if (!ioa_cfg->scan_enabled) {
3355 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3356 return;
3357 }
3358
3359 restart:
3360 do {
3361 did_work = 0;
3362 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
3363 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3364 return;
3365 }
3366
3367 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3368 if (res->del_from_ml && res->sdev) {
3369 did_work = 1;
3370 sdev = res->sdev;
3371 if (!scsi_device_get(sdev)) {
3372 if (!res->add_to_ml)
3373 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3374 else
3375 res->del_from_ml = 0;
3376 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3377 scsi_remove_device(sdev);
3378 scsi_device_put(sdev);
3379 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3380 }
3381 break;
3382 }
3383 }
3384 } while (did_work);
3385
3386 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3387 if (res->add_to_ml) {
3388 bus = res->bus;
3389 target = res->target;
3390 lun = res->lun;
3391 res->add_to_ml = 0;
3392 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3393 scsi_add_device(ioa_cfg->host, bus, target, lun);
3394 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3395 goto restart;
3396 }
3397 }
3398
3399 ioa_cfg->scan_done = 1;
3400 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3401 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3402 LEAVE;
3403 }
3404
3405 #ifdef CONFIG_SCSI_IPR_TRACE
3406 /**
3407 * ipr_read_trace - Dump the adapter trace
3408 * @filp: open sysfs file
3409 * @kobj: kobject struct
3410 * @bin_attr: bin_attribute struct
3411 * @buf: buffer
3412 * @off: offset
3413 * @count: buffer size
3414 *
3415 * Return value:
3416 * number of bytes printed to buffer
3417 **/
3418 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3419 struct bin_attribute *bin_attr,
3420 char *buf, loff_t off, size_t count)
3421 {
3422 struct device *dev = container_of(kobj, struct device, kobj);
3423 struct Scsi_Host *shost = class_to_shost(dev);
3424 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3425 unsigned long lock_flags = 0;
3426 ssize_t ret;
3427
3428 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3429 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3430 IPR_TRACE_SIZE);
3431 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3432
3433 return ret;
3434 }
3435
3436 static struct bin_attribute ipr_trace_attr = {
3437 .attr = {
3438 .name = "trace",
3439 .mode = S_IRUGO,
3440 },
3441 .size = 0,
3442 .read = ipr_read_trace,
3443 };
3444 #endif
3445
3446 /**
3447 * ipr_show_fw_version - Show the firmware version
3448 * @dev: class device struct
3449 * @buf: buffer
3450 *
3451 * Return value:
3452 * number of bytes printed to buffer
3453 **/
3454 static ssize_t ipr_show_fw_version(struct device *dev,
3455 struct device_attribute *attr, char *buf)
3456 {
3457 struct Scsi_Host *shost = class_to_shost(dev);
3458 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3459 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3460 unsigned long lock_flags = 0;
3461 int len;
3462
3463 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3464 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3465 ucode_vpd->major_release, ucode_vpd->card_type,
3466 ucode_vpd->minor_release[0],
3467 ucode_vpd->minor_release[1]);
3468 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3469 return len;
3470 }
3471
3472 static struct device_attribute ipr_fw_version_attr = {
3473 .attr = {
3474 .name = "fw_version",
3475 .mode = S_IRUGO,
3476 },
3477 .show = ipr_show_fw_version,
3478 };
3479
3480 /**
3481 * ipr_show_log_level - Show the adapter's error logging level
3482 * @dev: class device struct
3483 * @buf: buffer
3484 *
3485 * Return value:
3486 * number of bytes printed to buffer
3487 **/
3488 static ssize_t ipr_show_log_level(struct device *dev,
3489 struct device_attribute *attr, char *buf)
3490 {
3491 struct Scsi_Host *shost = class_to_shost(dev);
3492 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3493 unsigned long lock_flags = 0;
3494 int len;
3495
3496 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3497 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3498 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3499 return len;
3500 }
3501
3502 /**
3503 * ipr_store_log_level - Change the adapter's error logging level
3504 * @dev: class device struct
3505 * @buf: buffer
3506 *
3507 * Return value:
3508 * number of bytes printed to buffer
3509 **/
3510 static ssize_t ipr_store_log_level(struct device *dev,
3511 struct device_attribute *attr,
3512 const char *buf, size_t count)
3513 {
3514 struct Scsi_Host *shost = class_to_shost(dev);
3515 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3516 unsigned long lock_flags = 0;
3517
3518 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3519 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3520 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3521 return strlen(buf);
3522 }
3523
3524 static struct device_attribute ipr_log_level_attr = {
3525 .attr = {
3526 .name = "log_level",
3527 .mode = S_IRUGO | S_IWUSR,
3528 },
3529 .show = ipr_show_log_level,
3530 .store = ipr_store_log_level
3531 };
3532
3533 /**
3534 * ipr_store_diagnostics - IOA Diagnostics interface
3535 * @dev: device struct
3536 * @buf: buffer
3537 * @count: buffer size
3538 *
3539 * This function will reset the adapter and wait a reasonable
3540 * amount of time for any errors that the adapter might log.
3541 *
3542 * Return value:
3543 * count on success / other on failure
3544 **/
3545 static ssize_t ipr_store_diagnostics(struct device *dev,
3546 struct device_attribute *attr,
3547 const char *buf, size_t count)
3548 {
3549 struct Scsi_Host *shost = class_to_shost(dev);
3550 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3551 unsigned long lock_flags = 0;
3552 int rc = count;
3553
3554 if (!capable(CAP_SYS_ADMIN))
3555 return -EACCES;
3556
3557 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3558 while (ioa_cfg->in_reset_reload) {
3559 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3560 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3561 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3562 }
3563
3564 ioa_cfg->errors_logged = 0;
3565 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3566
3567 if (ioa_cfg->in_reset_reload) {
3568 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3569 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3570
3571 /* Wait for a second for any errors to be logged */
3572 msleep(1000);
3573 } else {
3574 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3575 return -EIO;
3576 }
3577
3578 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3579 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3580 rc = -EIO;
3581 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3582
3583 return rc;
3584 }
3585
3586 static struct device_attribute ipr_diagnostics_attr = {
3587 .attr = {
3588 .name = "run_diagnostics",
3589 .mode = S_IWUSR,
3590 },
3591 .store = ipr_store_diagnostics
3592 };
3593
3594 /**
3595 * ipr_show_adapter_state - Show the adapter's state
3596 * @class_dev: device struct
3597 * @buf: buffer
3598 *
3599 * Return value:
3600 * number of bytes printed to buffer
3601 **/
3602 static ssize_t ipr_show_adapter_state(struct device *dev,
3603 struct device_attribute *attr, char *buf)
3604 {
3605 struct Scsi_Host *shost = class_to_shost(dev);
3606 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3607 unsigned long lock_flags = 0;
3608 int len;
3609
3610 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3611 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
3612 len = snprintf(buf, PAGE_SIZE, "offline\n");
3613 else
3614 len = snprintf(buf, PAGE_SIZE, "online\n");
3615 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3616 return len;
3617 }
3618
3619 /**
3620 * ipr_store_adapter_state - Change adapter state
3621 * @dev: device struct
3622 * @buf: buffer
3623 * @count: buffer size
3624 *
3625 * This function will change the adapter's state.
3626 *
3627 * Return value:
3628 * count on success / other on failure
3629 **/
3630 static ssize_t ipr_store_adapter_state(struct device *dev,
3631 struct device_attribute *attr,
3632 const char *buf, size_t count)
3633 {
3634 struct Scsi_Host *shost = class_to_shost(dev);
3635 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3636 unsigned long lock_flags;
3637 int result = count, i;
3638
3639 if (!capable(CAP_SYS_ADMIN))
3640 return -EACCES;
3641
3642 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3643 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead &&
3644 !strncmp(buf, "online", 6)) {
3645 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
3646 spin_lock(&ioa_cfg->hrrq[i]._lock);
3647 ioa_cfg->hrrq[i].ioa_is_dead = 0;
3648 spin_unlock(&ioa_cfg->hrrq[i]._lock);
3649 }
3650 wmb();
3651 ioa_cfg->reset_retries = 0;
3652 ioa_cfg->in_ioa_bringdown = 0;
3653 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3654 }
3655 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3656 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3657
3658 return result;
3659 }
3660
3661 static struct device_attribute ipr_ioa_state_attr = {
3662 .attr = {
3663 .name = "online_state",
3664 .mode = S_IRUGO | S_IWUSR,
3665 },
3666 .show = ipr_show_adapter_state,
3667 .store = ipr_store_adapter_state
3668 };
3669
3670 /**
3671 * ipr_store_reset_adapter - Reset the adapter
3672 * @dev: device struct
3673 * @buf: buffer
3674 * @count: buffer size
3675 *
3676 * This function will reset the adapter.
3677 *
3678 * Return value:
3679 * count on success / other on failure
3680 **/
3681 static ssize_t ipr_store_reset_adapter(struct device *dev,
3682 struct device_attribute *attr,
3683 const char *buf, size_t count)
3684 {
3685 struct Scsi_Host *shost = class_to_shost(dev);
3686 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3687 unsigned long lock_flags;
3688 int result = count;
3689
3690 if (!capable(CAP_SYS_ADMIN))
3691 return -EACCES;
3692
3693 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3694 if (!ioa_cfg->in_reset_reload)
3695 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3696 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3697 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3698
3699 return result;
3700 }
3701
3702 static struct device_attribute ipr_ioa_reset_attr = {
3703 .attr = {
3704 .name = "reset_host",
3705 .mode = S_IWUSR,
3706 },
3707 .store = ipr_store_reset_adapter
3708 };
3709
3710 static int ipr_iopoll(struct irq_poll *iop, int budget);
3711 /**
3712 * ipr_show_iopoll_weight - Show ipr polling mode
3713 * @dev: class device struct
3714 * @buf: buffer
3715 *
3716 * Return value:
3717 * number of bytes printed to buffer
3718 **/
3719 static ssize_t ipr_show_iopoll_weight(struct device *dev,
3720 struct device_attribute *attr, char *buf)
3721 {
3722 struct Scsi_Host *shost = class_to_shost(dev);
3723 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3724 unsigned long lock_flags = 0;
3725 int len;
3726
3727 spin_lock_irqsave(shost->host_lock, lock_flags);
3728 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight);
3729 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3730
3731 return len;
3732 }
3733
3734 /**
3735 * ipr_store_iopoll_weight - Change the adapter's polling mode
3736 * @dev: class device struct
3737 * @buf: buffer
3738 *
3739 * Return value:
3740 * number of bytes printed to buffer
3741 **/
3742 static ssize_t ipr_store_iopoll_weight(struct device *dev,
3743 struct device_attribute *attr,
3744 const char *buf, size_t count)
3745 {
3746 struct Scsi_Host *shost = class_to_shost(dev);
3747 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3748 unsigned long user_iopoll_weight;
3749 unsigned long lock_flags = 0;
3750 int i;
3751
3752 if (!ioa_cfg->sis64) {
3753 dev_info(&ioa_cfg->pdev->dev, "irq_poll not supported on this adapter\n");
3754 return -EINVAL;
3755 }
3756 if (kstrtoul(buf, 10, &user_iopoll_weight))
3757 return -EINVAL;
3758
3759 if (user_iopoll_weight > 256) {
3760 dev_info(&ioa_cfg->pdev->dev, "Invalid irq_poll weight. It must be less than 256\n");
3761 return -EINVAL;
3762 }
3763
3764 if (user_iopoll_weight == ioa_cfg->iopoll_weight) {
3765 dev_info(&ioa_cfg->pdev->dev, "Current irq_poll weight has the same weight\n");
3766 return strlen(buf);
3767 }
3768
3769 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3770 for (i = 1; i < ioa_cfg->hrrq_num; i++)
3771 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
3772 }
3773
3774 spin_lock_irqsave(shost->host_lock, lock_flags);
3775 ioa_cfg->iopoll_weight = user_iopoll_weight;
3776 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3777 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
3778 irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
3779 ioa_cfg->iopoll_weight, ipr_iopoll);
3780 }
3781 }
3782 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3783
3784 return strlen(buf);
3785 }
3786
3787 static struct device_attribute ipr_iopoll_weight_attr = {
3788 .attr = {
3789 .name = "iopoll_weight",
3790 .mode = S_IRUGO | S_IWUSR,
3791 },
3792 .show = ipr_show_iopoll_weight,
3793 .store = ipr_store_iopoll_weight
3794 };
3795
3796 /**
3797 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3798 * @buf_len: buffer length
3799 *
3800 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3801 * list to use for microcode download
3802 *
3803 * Return value:
3804 * pointer to sglist / NULL on failure
3805 **/
3806 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3807 {
3808 int sg_size, order, bsize_elem, num_elem, i, j;
3809 struct ipr_sglist *sglist;
3810 struct scatterlist *scatterlist;
3811 struct page *page;
3812
3813 /* Get the minimum size per scatter/gather element */
3814 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3815
3816 /* Get the actual size per element */
3817 order = get_order(sg_size);
3818
3819 /* Determine the actual number of bytes per element */
3820 bsize_elem = PAGE_SIZE * (1 << order);
3821
3822 /* Determine the actual number of sg entries needed */
3823 if (buf_len % bsize_elem)
3824 num_elem = (buf_len / bsize_elem) + 1;
3825 else
3826 num_elem = buf_len / bsize_elem;
3827
3828 /* Allocate a scatter/gather list for the DMA */
3829 sglist = kzalloc(sizeof(struct ipr_sglist) +
3830 (sizeof(struct scatterlist) * (num_elem - 1)),
3831 GFP_KERNEL);
3832
3833 if (sglist == NULL) {
3834 ipr_trace;
3835 return NULL;
3836 }
3837
3838 scatterlist = sglist->scatterlist;
3839 sg_init_table(scatterlist, num_elem);
3840
3841 sglist->order = order;
3842 sglist->num_sg = num_elem;
3843
3844 /* Allocate a bunch of sg elements */
3845 for (i = 0; i < num_elem; i++) {
3846 page = alloc_pages(GFP_KERNEL, order);
3847 if (!page) {
3848 ipr_trace;
3849
3850 /* Free up what we already allocated */
3851 for (j = i - 1; j >= 0; j--)
3852 __free_pages(sg_page(&scatterlist[j]), order);
3853 kfree(sglist);
3854 return NULL;
3855 }
3856
3857 sg_set_page(&scatterlist[i], page, 0, 0);
3858 }
3859
3860 return sglist;
3861 }
3862
3863 /**
3864 * ipr_free_ucode_buffer - Frees a microcode download buffer
3865 * @p_dnld: scatter/gather list pointer
3866 *
3867 * Free a DMA'able ucode download buffer previously allocated with
3868 * ipr_alloc_ucode_buffer
3869 *
3870 * Return value:
3871 * nothing
3872 **/
3873 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3874 {
3875 int i;
3876
3877 for (i = 0; i < sglist->num_sg; i++)
3878 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
3879
3880 kfree(sglist);
3881 }
3882
3883 /**
3884 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3885 * @sglist: scatter/gather list pointer
3886 * @buffer: buffer pointer
3887 * @len: buffer length
3888 *
3889 * Copy a microcode image from a user buffer into a buffer allocated by
3890 * ipr_alloc_ucode_buffer
3891 *
3892 * Return value:
3893 * 0 on success / other on failure
3894 **/
3895 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3896 u8 *buffer, u32 len)
3897 {
3898 int bsize_elem, i, result = 0;
3899 struct scatterlist *scatterlist;
3900 void *kaddr;
3901
3902 /* Determine the actual number of bytes per element */
3903 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3904
3905 scatterlist = sglist->scatterlist;
3906
3907 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3908 struct page *page = sg_page(&scatterlist[i]);
3909
3910 kaddr = kmap(page);
3911 memcpy(kaddr, buffer, bsize_elem);
3912 kunmap(page);
3913
3914 scatterlist[i].length = bsize_elem;
3915
3916 if (result != 0) {
3917 ipr_trace;
3918 return result;
3919 }
3920 }
3921
3922 if (len % bsize_elem) {
3923 struct page *page = sg_page(&scatterlist[i]);
3924
3925 kaddr = kmap(page);
3926 memcpy(kaddr, buffer, len % bsize_elem);
3927 kunmap(page);
3928
3929 scatterlist[i].length = len % bsize_elem;
3930 }
3931
3932 sglist->buffer_len = len;
3933 return result;
3934 }
3935
3936 /**
3937 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3938 * @ipr_cmd: ipr command struct
3939 * @sglist: scatter/gather list
3940 *
3941 * Builds a microcode download IOA data list (IOADL).
3942 *
3943 **/
3944 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3945 struct ipr_sglist *sglist)
3946 {
3947 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3948 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3949 struct scatterlist *scatterlist = sglist->scatterlist;
3950 int i;
3951
3952 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3953 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3954 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3955
3956 ioarcb->ioadl_len =
3957 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3958 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3959 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3960 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3961 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3962 }
3963
3964 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3965 }
3966
3967 /**
3968 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3969 * @ipr_cmd: ipr command struct
3970 * @sglist: scatter/gather list
3971 *
3972 * Builds a microcode download IOA data list (IOADL).
3973 *
3974 **/
3975 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3976 struct ipr_sglist *sglist)
3977 {
3978 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3979 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3980 struct scatterlist *scatterlist = sglist->scatterlist;
3981 int i;
3982
3983 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3984 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3985 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3986
3987 ioarcb->ioadl_len =
3988 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3989
3990 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3991 ioadl[i].flags_and_data_len =
3992 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3993 ioadl[i].address =
3994 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3995 }
3996
3997 ioadl[i-1].flags_and_data_len |=
3998 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3999 }
4000
4001 /**
4002 * ipr_update_ioa_ucode - Update IOA's microcode
4003 * @ioa_cfg: ioa config struct
4004 * @sglist: scatter/gather list
4005 *
4006 * Initiate an adapter reset to update the IOA's microcode
4007 *
4008 * Return value:
4009 * 0 on success / -EIO on failure
4010 **/
4011 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
4012 struct ipr_sglist *sglist)
4013 {
4014 unsigned long lock_flags;
4015
4016 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4017 while (ioa_cfg->in_reset_reload) {
4018 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4019 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4020 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4021 }
4022
4023 if (ioa_cfg->ucode_sglist) {
4024 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4025 dev_err(&ioa_cfg->pdev->dev,
4026 "Microcode download already in progress\n");
4027 return -EIO;
4028 }
4029
4030 sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev,
4031 sglist->scatterlist, sglist->num_sg,
4032 DMA_TO_DEVICE);
4033
4034 if (!sglist->num_dma_sg) {
4035 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4036 dev_err(&ioa_cfg->pdev->dev,
4037 "Failed to map microcode download buffer!\n");
4038 return -EIO;
4039 }
4040
4041 ioa_cfg->ucode_sglist = sglist;
4042 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
4043 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4044 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4045
4046 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4047 ioa_cfg->ucode_sglist = NULL;
4048 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4049 return 0;
4050 }
4051
4052 /**
4053 * ipr_store_update_fw - Update the firmware on the adapter
4054 * @class_dev: device struct
4055 * @buf: buffer
4056 * @count: buffer size
4057 *
4058 * This function will update the firmware on the adapter.
4059 *
4060 * Return value:
4061 * count on success / other on failure
4062 **/
4063 static ssize_t ipr_store_update_fw(struct device *dev,
4064 struct device_attribute *attr,
4065 const char *buf, size_t count)
4066 {
4067 struct Scsi_Host *shost = class_to_shost(dev);
4068 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4069 struct ipr_ucode_image_header *image_hdr;
4070 const struct firmware *fw_entry;
4071 struct ipr_sglist *sglist;
4072 char fname[100];
4073 char *src;
4074 char *endline;
4075 int result, dnld_size;
4076
4077 if (!capable(CAP_SYS_ADMIN))
4078 return -EACCES;
4079
4080 snprintf(fname, sizeof(fname), "%s", buf);
4081
4082 endline = strchr(fname, '\n');
4083 if (endline)
4084 *endline = '\0';
4085
4086 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
4087 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
4088 return -EIO;
4089 }
4090
4091 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
4092
4093 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
4094 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
4095 sglist = ipr_alloc_ucode_buffer(dnld_size);
4096
4097 if (!sglist) {
4098 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
4099 release_firmware(fw_entry);
4100 return -ENOMEM;
4101 }
4102
4103 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
4104
4105 if (result) {
4106 dev_err(&ioa_cfg->pdev->dev,
4107 "Microcode buffer copy to DMA buffer failed\n");
4108 goto out;
4109 }
4110
4111 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n");
4112
4113 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
4114
4115 if (!result)
4116 result = count;
4117 out:
4118 ipr_free_ucode_buffer(sglist);
4119 release_firmware(fw_entry);
4120 return result;
4121 }
4122
4123 static struct device_attribute ipr_update_fw_attr = {
4124 .attr = {
4125 .name = "update_fw",
4126 .mode = S_IWUSR,
4127 },
4128 .store = ipr_store_update_fw
4129 };
4130
4131 /**
4132 * ipr_show_fw_type - Show the adapter's firmware type.
4133 * @dev: class device struct
4134 * @buf: buffer
4135 *
4136 * Return value:
4137 * number of bytes printed to buffer
4138 **/
4139 static ssize_t ipr_show_fw_type(struct device *dev,
4140 struct device_attribute *attr, char *buf)
4141 {
4142 struct Scsi_Host *shost = class_to_shost(dev);
4143 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4144 unsigned long lock_flags = 0;
4145 int len;
4146
4147 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4148 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
4149 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4150 return len;
4151 }
4152
4153 static struct device_attribute ipr_ioa_fw_type_attr = {
4154 .attr = {
4155 .name = "fw_type",
4156 .mode = S_IRUGO,
4157 },
4158 .show = ipr_show_fw_type
4159 };
4160
4161 static ssize_t ipr_read_async_err_log(struct file *filep, struct kobject *kobj,
4162 struct bin_attribute *bin_attr, char *buf,
4163 loff_t off, size_t count)
4164 {
4165 struct device *cdev = container_of(kobj, struct device, kobj);
4166 struct Scsi_Host *shost = class_to_shost(cdev);
4167 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4168 struct ipr_hostrcb *hostrcb;
4169 unsigned long lock_flags = 0;
4170 int ret;
4171
4172 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4173 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q,
4174 struct ipr_hostrcb, queue);
4175 if (!hostrcb) {
4176 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4177 return 0;
4178 }
4179 ret = memory_read_from_buffer(buf, count, &off, &hostrcb->hcam,
4180 sizeof(hostrcb->hcam));
4181 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4182 return ret;
4183 }
4184
4185 static ssize_t ipr_next_async_err_log(struct file *filep, struct kobject *kobj,
4186 struct bin_attribute *bin_attr, char *buf,
4187 loff_t off, size_t count)
4188 {
4189 struct device *cdev = container_of(kobj, struct device, kobj);
4190 struct Scsi_Host *shost = class_to_shost(cdev);
4191 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4192 struct ipr_hostrcb *hostrcb;
4193 unsigned long lock_flags = 0;
4194
4195 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4196 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q,
4197 struct ipr_hostrcb, queue);
4198 if (!hostrcb) {
4199 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4200 return count;
4201 }
4202
4203 /* Reclaim hostrcb before exit */
4204 list_move_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
4205 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4206 return count;
4207 }
4208
4209 static struct bin_attribute ipr_ioa_async_err_log = {
4210 .attr = {
4211 .name = "async_err_log",
4212 .mode = S_IRUGO | S_IWUSR,
4213 },
4214 .size = 0,
4215 .read = ipr_read_async_err_log,
4216 .write = ipr_next_async_err_log
4217 };
4218
4219 static struct device_attribute *ipr_ioa_attrs[] = {
4220 &ipr_fw_version_attr,
4221 &ipr_log_level_attr,
4222 &ipr_diagnostics_attr,
4223 &ipr_ioa_state_attr,
4224 &ipr_ioa_reset_attr,
4225 &ipr_update_fw_attr,
4226 &ipr_ioa_fw_type_attr,
4227 &ipr_iopoll_weight_attr,
4228 NULL,
4229 };
4230
4231 #ifdef CONFIG_SCSI_IPR_DUMP
4232 /**
4233 * ipr_read_dump - Dump the adapter
4234 * @filp: open sysfs file
4235 * @kobj: kobject struct
4236 * @bin_attr: bin_attribute struct
4237 * @buf: buffer
4238 * @off: offset
4239 * @count: buffer size
4240 *
4241 * Return value:
4242 * number of bytes printed to buffer
4243 **/
4244 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
4245 struct bin_attribute *bin_attr,
4246 char *buf, loff_t off, size_t count)
4247 {
4248 struct device *cdev = container_of(kobj, struct device, kobj);
4249 struct Scsi_Host *shost = class_to_shost(cdev);
4250 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4251 struct ipr_dump *dump;
4252 unsigned long lock_flags = 0;
4253 char *src;
4254 int len, sdt_end;
4255 size_t rc = count;
4256
4257 if (!capable(CAP_SYS_ADMIN))
4258 return -EACCES;
4259
4260 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4261 dump = ioa_cfg->dump;
4262
4263 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
4264 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4265 return 0;
4266 }
4267 kref_get(&dump->kref);
4268 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4269
4270 if (off > dump->driver_dump.hdr.len) {
4271 kref_put(&dump->kref, ipr_release_dump);
4272 return 0;
4273 }
4274
4275 if (off + count > dump->driver_dump.hdr.len) {
4276 count = dump->driver_dump.hdr.len - off;
4277 rc = count;
4278 }
4279
4280 if (count && off < sizeof(dump->driver_dump)) {
4281 if (off + count > sizeof(dump->driver_dump))
4282 len = sizeof(dump->driver_dump) - off;
4283 else
4284 len = count;
4285 src = (u8 *)&dump->driver_dump + off;
4286 memcpy(buf, src, len);
4287 buf += len;
4288 off += len;
4289 count -= len;
4290 }
4291
4292 off -= sizeof(dump->driver_dump);
4293
4294 if (ioa_cfg->sis64)
4295 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4296 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
4297 sizeof(struct ipr_sdt_entry));
4298 else
4299 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4300 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
4301
4302 if (count && off < sdt_end) {
4303 if (off + count > sdt_end)
4304 len = sdt_end - off;
4305 else
4306 len = count;
4307 src = (u8 *)&dump->ioa_dump + off;
4308 memcpy(buf, src, len);
4309 buf += len;
4310 off += len;
4311 count -= len;
4312 }
4313
4314 off -= sdt_end;
4315
4316 while (count) {
4317 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
4318 len = PAGE_ALIGN(off) - off;
4319 else
4320 len = count;
4321 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
4322 src += off & ~PAGE_MASK;
4323 memcpy(buf, src, len);
4324 buf += len;
4325 off += len;
4326 count -= len;
4327 }
4328
4329 kref_put(&dump->kref, ipr_release_dump);
4330 return rc;
4331 }
4332
4333 /**
4334 * ipr_alloc_dump - Prepare for adapter dump
4335 * @ioa_cfg: ioa config struct
4336 *
4337 * Return value:
4338 * 0 on success / other on failure
4339 **/
4340 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
4341 {
4342 struct ipr_dump *dump;
4343 __be32 **ioa_data;
4344 unsigned long lock_flags = 0;
4345
4346 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
4347
4348 if (!dump) {
4349 ipr_err("Dump memory allocation failed\n");
4350 return -ENOMEM;
4351 }
4352
4353 if (ioa_cfg->sis64)
4354 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4355 else
4356 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4357
4358 if (!ioa_data) {
4359 ipr_err("Dump memory allocation failed\n");
4360 kfree(dump);
4361 return -ENOMEM;
4362 }
4363
4364 dump->ioa_dump.ioa_data = ioa_data;
4365
4366 kref_init(&dump->kref);
4367 dump->ioa_cfg = ioa_cfg;
4368
4369 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4370
4371 if (INACTIVE != ioa_cfg->sdt_state) {
4372 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4373 vfree(dump->ioa_dump.ioa_data);
4374 kfree(dump);
4375 return 0;
4376 }
4377
4378 ioa_cfg->dump = dump;
4379 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
4380 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) {
4381 ioa_cfg->dump_taken = 1;
4382 schedule_work(&ioa_cfg->work_q);
4383 }
4384 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4385
4386 return 0;
4387 }
4388
4389 /**
4390 * ipr_free_dump - Free adapter dump memory
4391 * @ioa_cfg: ioa config struct
4392 *
4393 * Return value:
4394 * 0 on success / other on failure
4395 **/
4396 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
4397 {
4398 struct ipr_dump *dump;
4399 unsigned long lock_flags = 0;
4400
4401 ENTER;
4402
4403 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4404 dump = ioa_cfg->dump;
4405 if (!dump) {
4406 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4407 return 0;
4408 }
4409
4410 ioa_cfg->dump = NULL;
4411 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4412
4413 kref_put(&dump->kref, ipr_release_dump);
4414
4415 LEAVE;
4416 return 0;
4417 }
4418
4419 /**
4420 * ipr_write_dump - Setup dump state of adapter
4421 * @filp: open sysfs file
4422 * @kobj: kobject struct
4423 * @bin_attr: bin_attribute struct
4424 * @buf: buffer
4425 * @off: offset
4426 * @count: buffer size
4427 *
4428 * Return value:
4429 * number of bytes printed to buffer
4430 **/
4431 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4432 struct bin_attribute *bin_attr,
4433 char *buf, loff_t off, size_t count)
4434 {
4435 struct device *cdev = container_of(kobj, struct device, kobj);
4436 struct Scsi_Host *shost = class_to_shost(cdev);
4437 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4438 int rc;
4439
4440 if (!capable(CAP_SYS_ADMIN))
4441 return -EACCES;
4442
4443 if (buf[0] == '1')
4444 rc = ipr_alloc_dump(ioa_cfg);
4445 else if (buf[0] == '0')
4446 rc = ipr_free_dump(ioa_cfg);
4447 else
4448 return -EINVAL;
4449
4450 if (rc)
4451 return rc;
4452 else
4453 return count;
4454 }
4455
4456 static struct bin_attribute ipr_dump_attr = {
4457 .attr = {
4458 .name = "dump",
4459 .mode = S_IRUSR | S_IWUSR,
4460 },
4461 .size = 0,
4462 .read = ipr_read_dump,
4463 .write = ipr_write_dump
4464 };
4465 #else
4466 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4467 #endif
4468
4469 /**
4470 * ipr_change_queue_depth - Change the device's queue depth
4471 * @sdev: scsi device struct
4472 * @qdepth: depth to set
4473 * @reason: calling context
4474 *
4475 * Return value:
4476 * actual depth set
4477 **/
4478 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
4479 {
4480 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4481 struct ipr_resource_entry *res;
4482 unsigned long lock_flags = 0;
4483
4484 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4485 res = (struct ipr_resource_entry *)sdev->hostdata;
4486
4487 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4488 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4489 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4490
4491 scsi_change_queue_depth(sdev, qdepth);
4492 return sdev->queue_depth;
4493 }
4494
4495 /**
4496 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4497 * @dev: device struct
4498 * @attr: device attribute structure
4499 * @buf: buffer
4500 *
4501 * Return value:
4502 * number of bytes printed to buffer
4503 **/
4504 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4505 {
4506 struct scsi_device *sdev = to_scsi_device(dev);
4507 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4508 struct ipr_resource_entry *res;
4509 unsigned long lock_flags = 0;
4510 ssize_t len = -ENXIO;
4511
4512 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4513 res = (struct ipr_resource_entry *)sdev->hostdata;
4514 if (res)
4515 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4516 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4517 return len;
4518 }
4519
4520 static struct device_attribute ipr_adapter_handle_attr = {
4521 .attr = {
4522 .name = "adapter_handle",
4523 .mode = S_IRUSR,
4524 },
4525 .show = ipr_show_adapter_handle
4526 };
4527
4528 /**
4529 * ipr_show_resource_path - Show the resource path or the resource address for
4530 * this device.
4531 * @dev: device struct
4532 * @attr: device attribute structure
4533 * @buf: buffer
4534 *
4535 * Return value:
4536 * number of bytes printed to buffer
4537 **/
4538 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4539 {
4540 struct scsi_device *sdev = to_scsi_device(dev);
4541 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4542 struct ipr_resource_entry *res;
4543 unsigned long lock_flags = 0;
4544 ssize_t len = -ENXIO;
4545 char buffer[IPR_MAX_RES_PATH_LENGTH];
4546
4547 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4548 res = (struct ipr_resource_entry *)sdev->hostdata;
4549 if (res && ioa_cfg->sis64)
4550 len = snprintf(buf, PAGE_SIZE, "%s\n",
4551 __ipr_format_res_path(res->res_path, buffer,
4552 sizeof(buffer)));
4553 else if (res)
4554 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4555 res->bus, res->target, res->lun);
4556
4557 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4558 return len;
4559 }
4560
4561 static struct device_attribute ipr_resource_path_attr = {
4562 .attr = {
4563 .name = "resource_path",
4564 .mode = S_IRUGO,
4565 },
4566 .show = ipr_show_resource_path
4567 };
4568
4569 /**
4570 * ipr_show_device_id - Show the device_id for this device.
4571 * @dev: device struct
4572 * @attr: device attribute structure
4573 * @buf: buffer
4574 *
4575 * Return value:
4576 * number of bytes printed to buffer
4577 **/
4578 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4579 {
4580 struct scsi_device *sdev = to_scsi_device(dev);
4581 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4582 struct ipr_resource_entry *res;
4583 unsigned long lock_flags = 0;
4584 ssize_t len = -ENXIO;
4585
4586 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4587 res = (struct ipr_resource_entry *)sdev->hostdata;
4588 if (res && ioa_cfg->sis64)
4589 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id));
4590 else if (res)
4591 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4592
4593 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4594 return len;
4595 }
4596
4597 static struct device_attribute ipr_device_id_attr = {
4598 .attr = {
4599 .name = "device_id",
4600 .mode = S_IRUGO,
4601 },
4602 .show = ipr_show_device_id
4603 };
4604
4605 /**
4606 * ipr_show_resource_type - Show the resource type for this device.
4607 * @dev: device struct
4608 * @attr: device attribute structure
4609 * @buf: buffer
4610 *
4611 * Return value:
4612 * number of bytes printed to buffer
4613 **/
4614 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4615 {
4616 struct scsi_device *sdev = to_scsi_device(dev);
4617 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4618 struct ipr_resource_entry *res;
4619 unsigned long lock_flags = 0;
4620 ssize_t len = -ENXIO;
4621
4622 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4623 res = (struct ipr_resource_entry *)sdev->hostdata;
4624
4625 if (res)
4626 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4627
4628 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4629 return len;
4630 }
4631
4632 static struct device_attribute ipr_resource_type_attr = {
4633 .attr = {
4634 .name = "resource_type",
4635 .mode = S_IRUGO,
4636 },
4637 .show = ipr_show_resource_type
4638 };
4639
4640 /**
4641 * ipr_show_raw_mode - Show the adapter's raw mode
4642 * @dev: class device struct
4643 * @buf: buffer
4644 *
4645 * Return value:
4646 * number of bytes printed to buffer
4647 **/
4648 static ssize_t ipr_show_raw_mode(struct device *dev,
4649 struct device_attribute *attr, char *buf)
4650 {
4651 struct scsi_device *sdev = to_scsi_device(dev);
4652 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4653 struct ipr_resource_entry *res;
4654 unsigned long lock_flags = 0;
4655 ssize_t len;
4656
4657 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4658 res = (struct ipr_resource_entry *)sdev->hostdata;
4659 if (res)
4660 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode);
4661 else
4662 len = -ENXIO;
4663 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4664 return len;
4665 }
4666
4667 /**
4668 * ipr_store_raw_mode - Change the adapter's raw mode
4669 * @dev: class device struct
4670 * @buf: buffer
4671 *
4672 * Return value:
4673 * number of bytes printed to buffer
4674 **/
4675 static ssize_t ipr_store_raw_mode(struct device *dev,
4676 struct device_attribute *attr,
4677 const char *buf, size_t count)
4678 {
4679 struct scsi_device *sdev = to_scsi_device(dev);
4680 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4681 struct ipr_resource_entry *res;
4682 unsigned long lock_flags = 0;
4683 ssize_t len;
4684
4685 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4686 res = (struct ipr_resource_entry *)sdev->hostdata;
4687 if (res) {
4688 if (ipr_is_af_dasd_device(res)) {
4689 res->raw_mode = simple_strtoul(buf, NULL, 10);
4690 len = strlen(buf);
4691 if (res->sdev)
4692 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n",
4693 res->raw_mode ? "enabled" : "disabled");
4694 } else
4695 len = -EINVAL;
4696 } else
4697 len = -ENXIO;
4698 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4699 return len;
4700 }
4701
4702 static struct device_attribute ipr_raw_mode_attr = {
4703 .attr = {
4704 .name = "raw_mode",
4705 .mode = S_IRUGO | S_IWUSR,
4706 },
4707 .show = ipr_show_raw_mode,
4708 .store = ipr_store_raw_mode
4709 };
4710
4711 static struct device_attribute *ipr_dev_attrs[] = {
4712 &ipr_adapter_handle_attr,
4713 &ipr_resource_path_attr,
4714 &ipr_device_id_attr,
4715 &ipr_resource_type_attr,
4716 &ipr_raw_mode_attr,
4717 NULL,
4718 };
4719
4720 /**
4721 * ipr_biosparam - Return the HSC mapping
4722 * @sdev: scsi device struct
4723 * @block_device: block device pointer
4724 * @capacity: capacity of the device
4725 * @parm: Array containing returned HSC values.
4726 *
4727 * This function generates the HSC parms that fdisk uses.
4728 * We want to make sure we return something that places partitions
4729 * on 4k boundaries for best performance with the IOA.
4730 *
4731 * Return value:
4732 * 0 on success
4733 **/
4734 static int ipr_biosparam(struct scsi_device *sdev,
4735 struct block_device *block_device,
4736 sector_t capacity, int *parm)
4737 {
4738 int heads, sectors;
4739 sector_t cylinders;
4740
4741 heads = 128;
4742 sectors = 32;
4743
4744 cylinders = capacity;
4745 sector_div(cylinders, (128 * 32));
4746
4747 /* return result */
4748 parm[0] = heads;
4749 parm[1] = sectors;
4750 parm[2] = cylinders;
4751
4752 return 0;
4753 }
4754
4755 /**
4756 * ipr_find_starget - Find target based on bus/target.
4757 * @starget: scsi target struct
4758 *
4759 * Return value:
4760 * resource entry pointer if found / NULL if not found
4761 **/
4762 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4763 {
4764 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4765 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4766 struct ipr_resource_entry *res;
4767
4768 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4769 if ((res->bus == starget->channel) &&
4770 (res->target == starget->id)) {
4771 return res;
4772 }
4773 }
4774
4775 return NULL;
4776 }
4777
4778 static struct ata_port_info sata_port_info;
4779
4780 /**
4781 * ipr_target_alloc - Prepare for commands to a SCSI target
4782 * @starget: scsi target struct
4783 *
4784 * If the device is a SATA device, this function allocates an
4785 * ATA port with libata, else it does nothing.
4786 *
4787 * Return value:
4788 * 0 on success / non-0 on failure
4789 **/
4790 static int ipr_target_alloc(struct scsi_target *starget)
4791 {
4792 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4793 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4794 struct ipr_sata_port *sata_port;
4795 struct ata_port *ap;
4796 struct ipr_resource_entry *res;
4797 unsigned long lock_flags;
4798
4799 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4800 res = ipr_find_starget(starget);
4801 starget->hostdata = NULL;
4802
4803 if (res && ipr_is_gata(res)) {
4804 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4805 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4806 if (!sata_port)
4807 return -ENOMEM;
4808
4809 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4810 if (ap) {
4811 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4812 sata_port->ioa_cfg = ioa_cfg;
4813 sata_port->ap = ap;
4814 sata_port->res = res;
4815
4816 res->sata_port = sata_port;
4817 ap->private_data = sata_port;
4818 starget->hostdata = sata_port;
4819 } else {
4820 kfree(sata_port);
4821 return -ENOMEM;
4822 }
4823 }
4824 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4825
4826 return 0;
4827 }
4828
4829 /**
4830 * ipr_target_destroy - Destroy a SCSI target
4831 * @starget: scsi target struct
4832 *
4833 * If the device was a SATA device, this function frees the libata
4834 * ATA port, else it does nothing.
4835 *
4836 **/
4837 static void ipr_target_destroy(struct scsi_target *starget)
4838 {
4839 struct ipr_sata_port *sata_port = starget->hostdata;
4840 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4841 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4842
4843 if (ioa_cfg->sis64) {
4844 if (!ipr_find_starget(starget)) {
4845 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4846 clear_bit(starget->id, ioa_cfg->array_ids);
4847 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4848 clear_bit(starget->id, ioa_cfg->vset_ids);
4849 else if (starget->channel == 0)
4850 clear_bit(starget->id, ioa_cfg->target_ids);
4851 }
4852 }
4853
4854 if (sata_port) {
4855 starget->hostdata = NULL;
4856 ata_sas_port_destroy(sata_port->ap);
4857 kfree(sata_port);
4858 }
4859 }
4860
4861 /**
4862 * ipr_find_sdev - Find device based on bus/target/lun.
4863 * @sdev: scsi device struct
4864 *
4865 * Return value:
4866 * resource entry pointer if found / NULL if not found
4867 **/
4868 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4869 {
4870 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4871 struct ipr_resource_entry *res;
4872
4873 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4874 if ((res->bus == sdev->channel) &&
4875 (res->target == sdev->id) &&
4876 (res->lun == sdev->lun))
4877 return res;
4878 }
4879
4880 return NULL;
4881 }
4882
4883 /**
4884 * ipr_slave_destroy - Unconfigure a SCSI device
4885 * @sdev: scsi device struct
4886 *
4887 * Return value:
4888 * nothing
4889 **/
4890 static void ipr_slave_destroy(struct scsi_device *sdev)
4891 {
4892 struct ipr_resource_entry *res;
4893 struct ipr_ioa_cfg *ioa_cfg;
4894 unsigned long lock_flags = 0;
4895
4896 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4897
4898 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4899 res = (struct ipr_resource_entry *) sdev->hostdata;
4900 if (res) {
4901 if (res->sata_port)
4902 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4903 sdev->hostdata = NULL;
4904 res->sdev = NULL;
4905 res->sata_port = NULL;
4906 }
4907 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4908 }
4909
4910 /**
4911 * ipr_slave_configure - Configure a SCSI device
4912 * @sdev: scsi device struct
4913 *
4914 * This function configures the specified scsi device.
4915 *
4916 * Return value:
4917 * 0 on success
4918 **/
4919 static int ipr_slave_configure(struct scsi_device *sdev)
4920 {
4921 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4922 struct ipr_resource_entry *res;
4923 struct ata_port *ap = NULL;
4924 unsigned long lock_flags = 0;
4925 char buffer[IPR_MAX_RES_PATH_LENGTH];
4926
4927 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4928 res = sdev->hostdata;
4929 if (res) {
4930 if (ipr_is_af_dasd_device(res))
4931 sdev->type = TYPE_RAID;
4932 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4933 sdev->scsi_level = 4;
4934 sdev->no_uld_attach = 1;
4935 }
4936 if (ipr_is_vset_device(res)) {
4937 sdev->scsi_level = SCSI_SPC_3;
4938 blk_queue_rq_timeout(sdev->request_queue,
4939 IPR_VSET_RW_TIMEOUT);
4940 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4941 }
4942 if (ipr_is_gata(res) && res->sata_port)
4943 ap = res->sata_port->ap;
4944 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4945
4946 if (ap) {
4947 scsi_change_queue_depth(sdev, IPR_MAX_CMD_PER_ATA_LUN);
4948 ata_sas_slave_configure(sdev, ap);
4949 }
4950
4951 if (ioa_cfg->sis64)
4952 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4953 ipr_format_res_path(ioa_cfg,
4954 res->res_path, buffer, sizeof(buffer)));
4955 return 0;
4956 }
4957 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4958 return 0;
4959 }
4960
4961 /**
4962 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4963 * @sdev: scsi device struct
4964 *
4965 * This function initializes an ATA port so that future commands
4966 * sent through queuecommand will work.
4967 *
4968 * Return value:
4969 * 0 on success
4970 **/
4971 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4972 {
4973 struct ipr_sata_port *sata_port = NULL;
4974 int rc = -ENXIO;
4975
4976 ENTER;
4977 if (sdev->sdev_target)
4978 sata_port = sdev->sdev_target->hostdata;
4979 if (sata_port) {
4980 rc = ata_sas_port_init(sata_port->ap);
4981 if (rc == 0)
4982 rc = ata_sas_sync_probe(sata_port->ap);
4983 }
4984
4985 if (rc)
4986 ipr_slave_destroy(sdev);
4987
4988 LEAVE;
4989 return rc;
4990 }
4991
4992 /**
4993 * ipr_slave_alloc - Prepare for commands to a device.
4994 * @sdev: scsi device struct
4995 *
4996 * This function saves a pointer to the resource entry
4997 * in the scsi device struct if the device exists. We
4998 * can then use this pointer in ipr_queuecommand when
4999 * handling new commands.
5000 *
5001 * Return value:
5002 * 0 on success / -ENXIO if device does not exist
5003 **/
5004 static int ipr_slave_alloc(struct scsi_device *sdev)
5005 {
5006 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
5007 struct ipr_resource_entry *res;
5008 unsigned long lock_flags;
5009 int rc = -ENXIO;
5010
5011 sdev->hostdata = NULL;
5012
5013 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5014
5015 res = ipr_find_sdev(sdev);
5016 if (res) {
5017 res->sdev = sdev;
5018 res->add_to_ml = 0;
5019 res->in_erp = 0;
5020 sdev->hostdata = res;
5021 if (!ipr_is_naca_model(res))
5022 res->needs_sync_complete = 1;
5023 rc = 0;
5024 if (ipr_is_gata(res)) {
5025 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5026 return ipr_ata_slave_alloc(sdev);
5027 }
5028 }
5029
5030 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5031
5032 return rc;
5033 }
5034
5035 /**
5036 * ipr_match_lun - Match function for specified LUN
5037 * @ipr_cmd: ipr command struct
5038 * @device: device to match (sdev)
5039 *
5040 * Returns:
5041 * 1 if command matches sdev / 0 if command does not match sdev
5042 **/
5043 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device)
5044 {
5045 if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device)
5046 return 1;
5047 return 0;
5048 }
5049
5050 /**
5051 * ipr_cmnd_is_free - Check if a command is free or not
5052 * @ipr_cmd ipr command struct
5053 *
5054 * Returns:
5055 * true / false
5056 **/
5057 static bool ipr_cmnd_is_free(struct ipr_cmnd *ipr_cmd)
5058 {
5059 struct ipr_cmnd *loop_cmd;
5060
5061 list_for_each_entry(loop_cmd, &ipr_cmd->hrrq->hrrq_free_q, queue) {
5062 if (loop_cmd == ipr_cmd)
5063 return true;
5064 }
5065
5066 return false;
5067 }
5068
5069 /**
5070 * ipr_match_res - Match function for specified resource entry
5071 * @ipr_cmd: ipr command struct
5072 * @resource: resource entry to match
5073 *
5074 * Returns:
5075 * 1 if command matches sdev / 0 if command does not match sdev
5076 **/
5077 static int ipr_match_res(struct ipr_cmnd *ipr_cmd, void *resource)
5078 {
5079 struct ipr_resource_entry *res = resource;
5080
5081 if (res && ipr_cmd->ioarcb.res_handle == res->res_handle)
5082 return 1;
5083 return 0;
5084 }
5085
5086 /**
5087 * ipr_wait_for_ops - Wait for matching commands to complete
5088 * @ipr_cmd: ipr command struct
5089 * @device: device to match (sdev)
5090 * @match: match function to use
5091 *
5092 * Returns:
5093 * SUCCESS / FAILED
5094 **/
5095 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device,
5096 int (*match)(struct ipr_cmnd *, void *))
5097 {
5098 struct ipr_cmnd *ipr_cmd;
5099 int wait, i;
5100 unsigned long flags;
5101 struct ipr_hrr_queue *hrrq;
5102 signed long timeout = IPR_ABORT_TASK_TIMEOUT;
5103 DECLARE_COMPLETION_ONSTACK(comp);
5104
5105 ENTER;
5106 do {
5107 wait = 0;
5108
5109 for_each_hrrq(hrrq, ioa_cfg) {
5110 spin_lock_irqsave(hrrq->lock, flags);
5111 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
5112 ipr_cmd = ioa_cfg->ipr_cmnd_list[i];
5113 if (!ipr_cmnd_is_free(ipr_cmd)) {
5114 if (match(ipr_cmd, device)) {
5115 ipr_cmd->eh_comp = &comp;
5116 wait++;
5117 }
5118 }
5119 }
5120 spin_unlock_irqrestore(hrrq->lock, flags);
5121 }
5122
5123 if (wait) {
5124 timeout = wait_for_completion_timeout(&comp, timeout);
5125
5126 if (!timeout) {
5127 wait = 0;
5128
5129 for_each_hrrq(hrrq, ioa_cfg) {
5130 spin_lock_irqsave(hrrq->lock, flags);
5131 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
5132 ipr_cmd = ioa_cfg->ipr_cmnd_list[i];
5133 if (!ipr_cmnd_is_free(ipr_cmd)) {
5134 if (match(ipr_cmd, device)) {
5135 ipr_cmd->eh_comp = NULL;
5136 wait++;
5137 }
5138 }
5139 }
5140 spin_unlock_irqrestore(hrrq->lock, flags);
5141 }
5142
5143 if (wait)
5144 dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n");
5145 LEAVE;
5146 return wait ? FAILED : SUCCESS;
5147 }
5148 }
5149 } while (wait);
5150
5151 LEAVE;
5152 return SUCCESS;
5153 }
5154
5155 static int ipr_eh_host_reset(struct scsi_cmnd *cmd)
5156 {
5157 struct ipr_ioa_cfg *ioa_cfg;
5158 unsigned long lock_flags = 0;
5159 int rc = SUCCESS;
5160
5161 ENTER;
5162 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5163 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5164
5165 if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
5166 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
5167 dev_err(&ioa_cfg->pdev->dev,
5168 "Adapter being reset as a result of error recovery.\n");
5169
5170 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5171 ioa_cfg->sdt_state = GET_DUMP;
5172 }
5173
5174 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5175 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5176 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5177
5178 /* If we got hit with a host reset while we were already resetting
5179 the adapter for some reason, and the reset failed. */
5180 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
5181 ipr_trace;
5182 rc = FAILED;
5183 }
5184
5185 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5186 LEAVE;
5187 return rc;
5188 }
5189
5190 /**
5191 * ipr_device_reset - Reset the device
5192 * @ioa_cfg: ioa config struct
5193 * @res: resource entry struct
5194 *
5195 * This function issues a device reset to the affected device.
5196 * If the device is a SCSI device, a LUN reset will be sent
5197 * to the device first. If that does not work, a target reset
5198 * will be sent. If the device is a SATA device, a PHY reset will
5199 * be sent.
5200 *
5201 * Return value:
5202 * 0 on success / non-zero on failure
5203 **/
5204 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
5205 struct ipr_resource_entry *res)
5206 {
5207 struct ipr_cmnd *ipr_cmd;
5208 struct ipr_ioarcb *ioarcb;
5209 struct ipr_cmd_pkt *cmd_pkt;
5210 struct ipr_ioarcb_ata_regs *regs;
5211 u32 ioasc;
5212
5213 ENTER;
5214 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5215 ioarcb = &ipr_cmd->ioarcb;
5216 cmd_pkt = &ioarcb->cmd_pkt;
5217
5218 if (ipr_cmd->ioa_cfg->sis64) {
5219 regs = &ipr_cmd->i.ata_ioadl.regs;
5220 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
5221 } else
5222 regs = &ioarcb->u.add_data.u.regs;
5223
5224 ioarcb->res_handle = res->res_handle;
5225 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5226 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5227 if (ipr_is_gata(res)) {
5228 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
5229 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
5230 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5231 }
5232
5233 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5234 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5235 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5236 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
5237 if (ipr_cmd->ioa_cfg->sis64)
5238 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
5239 sizeof(struct ipr_ioasa_gata));
5240 else
5241 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
5242 sizeof(struct ipr_ioasa_gata));
5243 }
5244
5245 LEAVE;
5246 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0;
5247 }
5248
5249 /**
5250 * ipr_sata_reset - Reset the SATA port
5251 * @link: SATA link to reset
5252 * @classes: class of the attached device
5253 *
5254 * This function issues a SATA phy reset to the affected ATA link.
5255 *
5256 * Return value:
5257 * 0 on success / non-zero on failure
5258 **/
5259 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
5260 unsigned long deadline)
5261 {
5262 struct ipr_sata_port *sata_port = link->ap->private_data;
5263 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5264 struct ipr_resource_entry *res;
5265 unsigned long lock_flags = 0;
5266 int rc = -ENXIO, ret;
5267
5268 ENTER;
5269 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5270 while (ioa_cfg->in_reset_reload) {
5271 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5272 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5273 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5274 }
5275
5276 res = sata_port->res;
5277 if (res) {
5278 rc = ipr_device_reset(ioa_cfg, res);
5279 *classes = res->ata_class;
5280 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5281
5282 ret = ipr_wait_for_ops(ioa_cfg, res, ipr_match_res);
5283 if (ret != SUCCESS) {
5284 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5285 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
5286 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5287
5288 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5289 }
5290 } else
5291 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5292
5293 LEAVE;
5294 return rc;
5295 }
5296
5297 /**
5298 * ipr_eh_dev_reset - Reset the device
5299 * @scsi_cmd: scsi command struct
5300 *
5301 * This function issues a device reset to the affected device.
5302 * A LUN reset will be sent to the device first. If that does
5303 * not work, a target reset will be sent.
5304 *
5305 * Return value:
5306 * SUCCESS / FAILED
5307 **/
5308 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd)
5309 {
5310 struct ipr_cmnd *ipr_cmd;
5311 struct ipr_ioa_cfg *ioa_cfg;
5312 struct ipr_resource_entry *res;
5313 struct ata_port *ap;
5314 int rc = 0, i;
5315 struct ipr_hrr_queue *hrrq;
5316
5317 ENTER;
5318 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5319 res = scsi_cmd->device->hostdata;
5320
5321 /*
5322 * If we are currently going through reset/reload, return failed. This will force the
5323 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
5324 * reset to complete
5325 */
5326 if (ioa_cfg->in_reset_reload)
5327 return FAILED;
5328 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5329 return FAILED;
5330
5331 for_each_hrrq(hrrq, ioa_cfg) {
5332 spin_lock(&hrrq->_lock);
5333 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
5334 ipr_cmd = ioa_cfg->ipr_cmnd_list[i];
5335
5336 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
5337 if (!ipr_cmd->qc)
5338 continue;
5339 if (ipr_cmnd_is_free(ipr_cmd))
5340 continue;
5341
5342 ipr_cmd->done = ipr_sata_eh_done;
5343 if (!(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
5344 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
5345 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
5346 }
5347 }
5348 }
5349 spin_unlock(&hrrq->_lock);
5350 }
5351 res->resetting_device = 1;
5352 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
5353
5354 if (ipr_is_gata(res) && res->sata_port) {
5355 ap = res->sata_port->ap;
5356 spin_unlock_irq(scsi_cmd->device->host->host_lock);
5357 ata_std_error_handler(ap);
5358 spin_lock_irq(scsi_cmd->device->host->host_lock);
5359 } else
5360 rc = ipr_device_reset(ioa_cfg, res);
5361 res->resetting_device = 0;
5362 res->reset_occurred = 1;
5363
5364 LEAVE;
5365 return rc ? FAILED : SUCCESS;
5366 }
5367
5368 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd)
5369 {
5370 int rc;
5371 struct ipr_ioa_cfg *ioa_cfg;
5372 struct ipr_resource_entry *res;
5373
5374 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5375 res = cmd->device->hostdata;
5376
5377 if (!res)
5378 return FAILED;
5379
5380 spin_lock_irq(cmd->device->host->host_lock);
5381 rc = __ipr_eh_dev_reset(cmd);
5382 spin_unlock_irq(cmd->device->host->host_lock);
5383
5384 if (rc == SUCCESS) {
5385 if (ipr_is_gata(res) && res->sata_port)
5386 rc = ipr_wait_for_ops(ioa_cfg, res, ipr_match_res);
5387 else
5388 rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun);
5389 }
5390
5391 return rc;
5392 }
5393
5394 /**
5395 * ipr_bus_reset_done - Op done function for bus reset.
5396 * @ipr_cmd: ipr command struct
5397 *
5398 * This function is the op done function for a bus reset
5399 *
5400 * Return value:
5401 * none
5402 **/
5403 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
5404 {
5405 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5406 struct ipr_resource_entry *res;
5407
5408 ENTER;
5409 if (!ioa_cfg->sis64)
5410 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5411 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
5412 scsi_report_bus_reset(ioa_cfg->host, res->bus);
5413 break;
5414 }
5415 }
5416
5417 /*
5418 * If abort has not completed, indicate the reset has, else call the
5419 * abort's done function to wake the sleeping eh thread
5420 */
5421 if (ipr_cmd->sibling->sibling)
5422 ipr_cmd->sibling->sibling = NULL;
5423 else
5424 ipr_cmd->sibling->done(ipr_cmd->sibling);
5425
5426 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5427 LEAVE;
5428 }
5429
5430 /**
5431 * ipr_abort_timeout - An abort task has timed out
5432 * @ipr_cmd: ipr command struct
5433 *
5434 * This function handles when an abort task times out. If this
5435 * happens we issue a bus reset since we have resources tied
5436 * up that must be freed before returning to the midlayer.
5437 *
5438 * Return value:
5439 * none
5440 **/
5441 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
5442 {
5443 struct ipr_cmnd *reset_cmd;
5444 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5445 struct ipr_cmd_pkt *cmd_pkt;
5446 unsigned long lock_flags = 0;
5447
5448 ENTER;
5449 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5450 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
5451 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5452 return;
5453 }
5454
5455 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
5456 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5457 ipr_cmd->sibling = reset_cmd;
5458 reset_cmd->sibling = ipr_cmd;
5459 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
5460 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
5461 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5462 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5463 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
5464
5465 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5466 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5467 LEAVE;
5468 }
5469
5470 /**
5471 * ipr_cancel_op - Cancel specified op
5472 * @scsi_cmd: scsi command struct
5473 *
5474 * This function cancels specified op.
5475 *
5476 * Return value:
5477 * SUCCESS / FAILED
5478 **/
5479 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd)
5480 {
5481 struct ipr_cmnd *ipr_cmd;
5482 struct ipr_ioa_cfg *ioa_cfg;
5483 struct ipr_resource_entry *res;
5484 struct ipr_cmd_pkt *cmd_pkt;
5485 u32 ioasc, int_reg;
5486 int i, op_found = 0;
5487 struct ipr_hrr_queue *hrrq;
5488
5489 ENTER;
5490 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5491 res = scsi_cmd->device->hostdata;
5492
5493 /* If we are currently going through reset/reload, return failed.
5494 * This will force the mid-layer to call ipr_eh_host_reset,
5495 * which will then go to sleep and wait for the reset to complete
5496 */
5497 if (ioa_cfg->in_reset_reload ||
5498 ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5499 return FAILED;
5500 if (!res)
5501 return FAILED;
5502
5503 /*
5504 * If we are aborting a timed out op, chances are that the timeout was caused
5505 * by a still not detected EEH error. In such cases, reading a register will
5506 * trigger the EEH recovery infrastructure.
5507 */
5508 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5509
5510 if (!ipr_is_gscsi(res))
5511 return FAILED;
5512
5513 for_each_hrrq(hrrq, ioa_cfg) {
5514 spin_lock(&hrrq->_lock);
5515 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
5516 if (ioa_cfg->ipr_cmnd_list[i]->scsi_cmd == scsi_cmd) {
5517 if (!ipr_cmnd_is_free(ioa_cfg->ipr_cmnd_list[i])) {
5518 op_found = 1;
5519 break;
5520 }
5521 }
5522 }
5523 spin_unlock(&hrrq->_lock);
5524 }
5525
5526 if (!op_found)
5527 return SUCCESS;
5528
5529 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5530 ipr_cmd->ioarcb.res_handle = res->res_handle;
5531 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5532 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5533 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5534 ipr_cmd->u.sdev = scsi_cmd->device;
5535
5536 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
5537 scsi_cmd->cmnd[0]);
5538 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
5539 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5540
5541 /*
5542 * If the abort task timed out and we sent a bus reset, we will get
5543 * one the following responses to the abort
5544 */
5545 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
5546 ioasc = 0;
5547 ipr_trace;
5548 }
5549
5550 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5551 if (!ipr_is_naca_model(res))
5552 res->needs_sync_complete = 1;
5553
5554 LEAVE;
5555 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS;
5556 }
5557
5558 /**
5559 * ipr_eh_abort - Abort a single op
5560 * @scsi_cmd: scsi command struct
5561 *
5562 * Return value:
5563 * 0 if scan in progress / 1 if scan is complete
5564 **/
5565 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time)
5566 {
5567 unsigned long lock_flags;
5568 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
5569 int rc = 0;
5570
5571 spin_lock_irqsave(shost->host_lock, lock_flags);
5572 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done)
5573 rc = 1;
5574 if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2))
5575 rc = 1;
5576 spin_unlock_irqrestore(shost->host_lock, lock_flags);
5577 return rc;
5578 }
5579
5580 /**
5581 * ipr_eh_host_reset - Reset the host adapter
5582 * @scsi_cmd: scsi command struct
5583 *
5584 * Return value:
5585 * SUCCESS / FAILED
5586 **/
5587 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd)
5588 {
5589 unsigned long flags;
5590 int rc;
5591 struct ipr_ioa_cfg *ioa_cfg;
5592
5593 ENTER;
5594
5595 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5596
5597 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
5598 rc = ipr_cancel_op(scsi_cmd);
5599 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
5600
5601 if (rc == SUCCESS)
5602 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun);
5603 LEAVE;
5604 return rc;
5605 }
5606
5607 /**
5608 * ipr_handle_other_interrupt - Handle "other" interrupts
5609 * @ioa_cfg: ioa config struct
5610 * @int_reg: interrupt register
5611 *
5612 * Return value:
5613 * IRQ_NONE / IRQ_HANDLED
5614 **/
5615 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
5616 u32 int_reg)
5617 {
5618 irqreturn_t rc = IRQ_HANDLED;
5619 u32 int_mask_reg;
5620
5621 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5622 int_reg &= ~int_mask_reg;
5623
5624 /* If an interrupt on the adapter did not occur, ignore it.
5625 * Or in the case of SIS 64, check for a stage change interrupt.
5626 */
5627 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5628 if (ioa_cfg->sis64) {
5629 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5630 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5631 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5632
5633 /* clear stage change */
5634 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5635 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5636 list_del(&ioa_cfg->reset_cmd->queue);
5637 del_timer(&ioa_cfg->reset_cmd->timer);
5638 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5639 return IRQ_HANDLED;
5640 }
5641 }
5642
5643 return IRQ_NONE;
5644 }
5645
5646 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5647 /* Mask the interrupt */
5648 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5649 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5650
5651 list_del(&ioa_cfg->reset_cmd->queue);
5652 del_timer(&ioa_cfg->reset_cmd->timer);
5653 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5654 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5655 if (ioa_cfg->clear_isr) {
5656 if (ipr_debug && printk_ratelimit())
5657 dev_err(&ioa_cfg->pdev->dev,
5658 "Spurious interrupt detected. 0x%08X\n", int_reg);
5659 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5660 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5661 return IRQ_NONE;
5662 }
5663 } else {
5664 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5665 ioa_cfg->ioa_unit_checked = 1;
5666 else if (int_reg & IPR_PCII_NO_HOST_RRQ)
5667 dev_err(&ioa_cfg->pdev->dev,
5668 "No Host RRQ. 0x%08X\n", int_reg);
5669 else
5670 dev_err(&ioa_cfg->pdev->dev,
5671 "Permanent IOA failure. 0x%08X\n", int_reg);
5672
5673 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5674 ioa_cfg->sdt_state = GET_DUMP;
5675
5676 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5677 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5678 }
5679
5680 return rc;
5681 }
5682
5683 /**
5684 * ipr_isr_eh - Interrupt service routine error handler
5685 * @ioa_cfg: ioa config struct
5686 * @msg: message to log
5687 *
5688 * Return value:
5689 * none
5690 **/
5691 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number)
5692 {
5693 ioa_cfg->errors_logged++;
5694 dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number);
5695
5696 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5697 ioa_cfg->sdt_state = GET_DUMP;
5698
5699 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5700 }
5701
5702 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget,
5703 struct list_head *doneq)
5704 {
5705 u32 ioasc;
5706 u16 cmd_index;
5707 struct ipr_cmnd *ipr_cmd;
5708 struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg;
5709 int num_hrrq = 0;
5710
5711 /* If interrupts are disabled, ignore the interrupt */
5712 if (!hrr_queue->allow_interrupts)
5713 return 0;
5714
5715 while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5716 hrr_queue->toggle_bit) {
5717
5718 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) &
5719 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >>
5720 IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5721
5722 if (unlikely(cmd_index > hrr_queue->max_cmd_id ||
5723 cmd_index < hrr_queue->min_cmd_id)) {
5724 ipr_isr_eh(ioa_cfg,
5725 "Invalid response handle from IOA: ",
5726 cmd_index);
5727 break;
5728 }
5729
5730 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5731 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5732
5733 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5734
5735 list_move_tail(&ipr_cmd->queue, doneq);
5736
5737 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) {
5738 hrr_queue->hrrq_curr++;
5739 } else {
5740 hrr_queue->hrrq_curr = hrr_queue->hrrq_start;
5741 hrr_queue->toggle_bit ^= 1u;
5742 }
5743 num_hrrq++;
5744 if (budget > 0 && num_hrrq >= budget)
5745 break;
5746 }
5747
5748 return num_hrrq;
5749 }
5750
5751 static int ipr_iopoll(struct irq_poll *iop, int budget)
5752 {
5753 struct ipr_ioa_cfg *ioa_cfg;
5754 struct ipr_hrr_queue *hrrq;
5755 struct ipr_cmnd *ipr_cmd, *temp;
5756 unsigned long hrrq_flags;
5757 int completed_ops;
5758 LIST_HEAD(doneq);
5759
5760 hrrq = container_of(iop, struct ipr_hrr_queue, iopoll);
5761 ioa_cfg = hrrq->ioa_cfg;
5762
5763 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5764 completed_ops = ipr_process_hrrq(hrrq, budget, &doneq);
5765
5766 if (completed_ops < budget)
5767 irq_poll_complete(iop);
5768 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5769
5770 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5771 list_del(&ipr_cmd->queue);
5772 del_timer(&ipr_cmd->timer);
5773 ipr_cmd->fast_done(ipr_cmd);
5774 }
5775
5776 return completed_ops;
5777 }
5778
5779 /**
5780 * ipr_isr - Interrupt service routine
5781 * @irq: irq number
5782 * @devp: pointer to ioa config struct
5783 *
5784 * Return value:
5785 * IRQ_NONE / IRQ_HANDLED
5786 **/
5787 static irqreturn_t ipr_isr(int irq, void *devp)
5788 {
5789 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5790 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5791 unsigned long hrrq_flags = 0;
5792 u32 int_reg = 0;
5793 int num_hrrq = 0;
5794 int irq_none = 0;
5795 struct ipr_cmnd *ipr_cmd, *temp;
5796 irqreturn_t rc = IRQ_NONE;
5797 LIST_HEAD(doneq);
5798
5799 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5800 /* If interrupts are disabled, ignore the interrupt */
5801 if (!hrrq->allow_interrupts) {
5802 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5803 return IRQ_NONE;
5804 }
5805
5806 while (1) {
5807 if (ipr_process_hrrq(hrrq, -1, &doneq)) {
5808 rc = IRQ_HANDLED;
5809
5810 if (!ioa_cfg->clear_isr)
5811 break;
5812
5813 /* Clear the PCI interrupt */
5814 num_hrrq = 0;
5815 do {
5816 writel(IPR_PCII_HRRQ_UPDATED,
5817 ioa_cfg->regs.clr_interrupt_reg32);
5818 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5819 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5820 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5821
5822 } else if (rc == IRQ_NONE && irq_none == 0) {
5823 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5824 irq_none++;
5825 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5826 int_reg & IPR_PCII_HRRQ_UPDATED) {
5827 ipr_isr_eh(ioa_cfg,
5828 "Error clearing HRRQ: ", num_hrrq);
5829 rc = IRQ_HANDLED;
5830 break;
5831 } else
5832 break;
5833 }
5834
5835 if (unlikely(rc == IRQ_NONE))
5836 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5837
5838 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5839 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5840 list_del(&ipr_cmd->queue);
5841 del_timer(&ipr_cmd->timer);
5842 ipr_cmd->fast_done(ipr_cmd);
5843 }
5844 return rc;
5845 }
5846
5847 /**
5848 * ipr_isr_mhrrq - Interrupt service routine
5849 * @irq: irq number
5850 * @devp: pointer to ioa config struct
5851 *
5852 * Return value:
5853 * IRQ_NONE / IRQ_HANDLED
5854 **/
5855 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp)
5856 {
5857 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5858 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5859 unsigned long hrrq_flags = 0;
5860 struct ipr_cmnd *ipr_cmd, *temp;
5861 irqreturn_t rc = IRQ_NONE;
5862 LIST_HEAD(doneq);
5863
5864 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5865
5866 /* If interrupts are disabled, ignore the interrupt */
5867 if (!hrrq->allow_interrupts) {
5868 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5869 return IRQ_NONE;
5870 }
5871
5872 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
5873 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5874 hrrq->toggle_bit) {
5875 irq_poll_sched(&hrrq->iopoll);
5876 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5877 return IRQ_HANDLED;
5878 }
5879 } else {
5880 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5881 hrrq->toggle_bit)
5882
5883 if (ipr_process_hrrq(hrrq, -1, &doneq))
5884 rc = IRQ_HANDLED;
5885 }
5886
5887 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5888
5889 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5890 list_del(&ipr_cmd->queue);
5891 del_timer(&ipr_cmd->timer);
5892 ipr_cmd->fast_done(ipr_cmd);
5893 }
5894 return rc;
5895 }
5896
5897 /**
5898 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5899 * @ioa_cfg: ioa config struct
5900 * @ipr_cmd: ipr command struct
5901 *
5902 * Return value:
5903 * 0 on success / -1 on failure
5904 **/
5905 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5906 struct ipr_cmnd *ipr_cmd)
5907 {
5908 int i, nseg;
5909 struct scatterlist *sg;
5910 u32 length;
5911 u32 ioadl_flags = 0;
5912 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5913 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5914 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5915
5916 length = scsi_bufflen(scsi_cmd);
5917 if (!length)
5918 return 0;
5919
5920 nseg = scsi_dma_map(scsi_cmd);
5921 if (nseg < 0) {
5922 if (printk_ratelimit())
5923 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5924 return -1;
5925 }
5926
5927 ipr_cmd->dma_use_sg = nseg;
5928
5929 ioarcb->data_transfer_length = cpu_to_be32(length);
5930 ioarcb->ioadl_len =
5931 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5932
5933 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5934 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5935 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5936 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5937 ioadl_flags = IPR_IOADL_FLAGS_READ;
5938
5939 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5940 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5941 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5942 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5943 }
5944
5945 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5946 return 0;
5947 }
5948
5949 /**
5950 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5951 * @ioa_cfg: ioa config struct
5952 * @ipr_cmd: ipr command struct
5953 *
5954 * Return value:
5955 * 0 on success / -1 on failure
5956 **/
5957 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5958 struct ipr_cmnd *ipr_cmd)
5959 {
5960 int i, nseg;
5961 struct scatterlist *sg;
5962 u32 length;
5963 u32 ioadl_flags = 0;
5964 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5965 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5966 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5967
5968 length = scsi_bufflen(scsi_cmd);
5969 if (!length)
5970 return 0;
5971
5972 nseg = scsi_dma_map(scsi_cmd);
5973 if (nseg < 0) {
5974 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5975 return -1;
5976 }
5977
5978 ipr_cmd->dma_use_sg = nseg;
5979
5980 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5981 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5982 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5983 ioarcb->data_transfer_length = cpu_to_be32(length);
5984 ioarcb->ioadl_len =
5985 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5986 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5987 ioadl_flags = IPR_IOADL_FLAGS_READ;
5988 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5989 ioarcb->read_ioadl_len =
5990 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5991 }
5992
5993 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5994 ioadl = ioarcb->u.add_data.u.ioadl;
5995 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5996 offsetof(struct ipr_ioarcb, u.add_data));
5997 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5998 }
5999
6000 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
6001 ioadl[i].flags_and_data_len =
6002 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6003 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
6004 }
6005
6006 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6007 return 0;
6008 }
6009
6010 /**
6011 * __ipr_erp_done - Process completion of ERP for a device
6012 * @ipr_cmd: ipr command struct
6013 *
6014 * This function copies the sense buffer into the scsi_cmd
6015 * struct and pushes the scsi_done function.
6016 *
6017 * Return value:
6018 * nothing
6019 **/
6020 static void __ipr_erp_done(struct ipr_cmnd *ipr_cmd)
6021 {
6022 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6023 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6024 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6025
6026 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
6027 scsi_cmd->result |= (DID_ERROR << 16);
6028 scmd_printk(KERN_ERR, scsi_cmd,
6029 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
6030 } else {
6031 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
6032 SCSI_SENSE_BUFFERSIZE);
6033 }
6034
6035 if (res) {
6036 if (!ipr_is_naca_model(res))
6037 res->needs_sync_complete = 1;
6038 res->in_erp = 0;
6039 }
6040 scsi_dma_unmap(ipr_cmd->scsi_cmd);
6041 scsi_cmd->scsi_done(scsi_cmd);
6042 if (ipr_cmd->eh_comp)
6043 complete(ipr_cmd->eh_comp);
6044 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6045 }
6046
6047 /**
6048 * ipr_erp_done - Process completion of ERP for a device
6049 * @ipr_cmd: ipr command struct
6050 *
6051 * This function copies the sense buffer into the scsi_cmd
6052 * struct and pushes the scsi_done function.
6053 *
6054 * Return value:
6055 * nothing
6056 **/
6057 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
6058 {
6059 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
6060 unsigned long hrrq_flags;
6061
6062 spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
6063 __ipr_erp_done(ipr_cmd);
6064 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
6065 }
6066
6067 /**
6068 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
6069 * @ipr_cmd: ipr command struct
6070 *
6071 * Return value:
6072 * none
6073 **/
6074 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
6075 {
6076 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6077 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6078 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6079
6080 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
6081 ioarcb->data_transfer_length = 0;
6082 ioarcb->read_data_transfer_length = 0;
6083 ioarcb->ioadl_len = 0;
6084 ioarcb->read_ioadl_len = 0;
6085 ioasa->hdr.ioasc = 0;
6086 ioasa->hdr.residual_data_len = 0;
6087
6088 if (ipr_cmd->ioa_cfg->sis64)
6089 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6090 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
6091 else {
6092 ioarcb->write_ioadl_addr =
6093 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
6094 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
6095 }
6096 }
6097
6098 /**
6099 * __ipr_erp_request_sense - Send request sense to a device
6100 * @ipr_cmd: ipr command struct
6101 *
6102 * This function sends a request sense to a device as a result
6103 * of a check condition.
6104 *
6105 * Return value:
6106 * nothing
6107 **/
6108 static void __ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
6109 {
6110 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
6111 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6112
6113 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
6114 __ipr_erp_done(ipr_cmd);
6115 return;
6116 }
6117
6118 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
6119
6120 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
6121 cmd_pkt->cdb[0] = REQUEST_SENSE;
6122 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
6123 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
6124 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6125 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
6126
6127 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
6128 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
6129
6130 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
6131 IPR_REQUEST_SENSE_TIMEOUT * 2);
6132 }
6133
6134 /**
6135 * ipr_erp_request_sense - Send request sense to a device
6136 * @ipr_cmd: ipr command struct
6137 *
6138 * This function sends a request sense to a device as a result
6139 * of a check condition.
6140 *
6141 * Return value:
6142 * nothing
6143 **/
6144 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
6145 {
6146 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
6147 unsigned long hrrq_flags;
6148
6149 spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
6150 __ipr_erp_request_sense(ipr_cmd);
6151 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
6152 }
6153
6154 /**
6155 * ipr_erp_cancel_all - Send cancel all to a device
6156 * @ipr_cmd: ipr command struct
6157 *
6158 * This function sends a cancel all to a device to clear the
6159 * queue. If we are running TCQ on the device, QERR is set to 1,
6160 * which means all outstanding ops have been dropped on the floor.
6161 * Cancel all will return them to us.
6162 *
6163 * Return value:
6164 * nothing
6165 **/
6166 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
6167 {
6168 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6169 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6170 struct ipr_cmd_pkt *cmd_pkt;
6171
6172 res->in_erp = 1;
6173
6174 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
6175
6176 if (!scsi_cmd->device->simple_tags) {
6177 __ipr_erp_request_sense(ipr_cmd);
6178 return;
6179 }
6180
6181 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
6182 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
6183 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
6184
6185 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
6186 IPR_CANCEL_ALL_TIMEOUT);
6187 }
6188
6189 /**
6190 * ipr_dump_ioasa - Dump contents of IOASA
6191 * @ioa_cfg: ioa config struct
6192 * @ipr_cmd: ipr command struct
6193 * @res: resource entry struct
6194 *
6195 * This function is invoked by the interrupt handler when ops
6196 * fail. It will log the IOASA if appropriate. Only called
6197 * for GPDD ops.
6198 *
6199 * Return value:
6200 * none
6201 **/
6202 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
6203 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
6204 {
6205 int i;
6206 u16 data_len;
6207 u32 ioasc, fd_ioasc;
6208 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6209 __be32 *ioasa_data = (__be32 *)ioasa;
6210 int error_index;
6211
6212 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
6213 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
6214
6215 if (0 == ioasc)
6216 return;
6217
6218 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
6219 return;
6220
6221 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
6222 error_index = ipr_get_error(fd_ioasc);
6223 else
6224 error_index = ipr_get_error(ioasc);
6225
6226 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
6227 /* Don't log an error if the IOA already logged one */
6228 if (ioasa->hdr.ilid != 0)
6229 return;
6230
6231 if (!ipr_is_gscsi(res))
6232 return;
6233
6234 if (ipr_error_table[error_index].log_ioasa == 0)
6235 return;
6236 }
6237
6238 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
6239
6240 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
6241 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
6242 data_len = sizeof(struct ipr_ioasa64);
6243 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
6244 data_len = sizeof(struct ipr_ioasa);
6245
6246 ipr_err("IOASA Dump:\n");
6247
6248 for (i = 0; i < data_len / 4; i += 4) {
6249 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
6250 be32_to_cpu(ioasa_data[i]),
6251 be32_to_cpu(ioasa_data[i+1]),
6252 be32_to_cpu(ioasa_data[i+2]),
6253 be32_to_cpu(ioasa_data[i+3]));
6254 }
6255 }
6256
6257 /**
6258 * ipr_gen_sense - Generate SCSI sense data from an IOASA
6259 * @ioasa: IOASA
6260 * @sense_buf: sense data buffer
6261 *
6262 * Return value:
6263 * none
6264 **/
6265 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
6266 {
6267 u32 failing_lba;
6268 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
6269 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
6270 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6271 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
6272
6273 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
6274
6275 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
6276 return;
6277
6278 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
6279
6280 if (ipr_is_vset_device(res) &&
6281 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
6282 ioasa->u.vset.failing_lba_hi != 0) {
6283 sense_buf[0] = 0x72;
6284 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
6285 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
6286 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
6287
6288 sense_buf[7] = 12;
6289 sense_buf[8] = 0;
6290 sense_buf[9] = 0x0A;
6291 sense_buf[10] = 0x80;
6292
6293 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
6294
6295 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
6296 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
6297 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
6298 sense_buf[15] = failing_lba & 0x000000ff;
6299
6300 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6301
6302 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
6303 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
6304 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
6305 sense_buf[19] = failing_lba & 0x000000ff;
6306 } else {
6307 sense_buf[0] = 0x70;
6308 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
6309 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
6310 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
6311
6312 /* Illegal request */
6313 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
6314 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
6315 sense_buf[7] = 10; /* additional length */
6316
6317 /* IOARCB was in error */
6318 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
6319 sense_buf[15] = 0xC0;
6320 else /* Parameter data was invalid */
6321 sense_buf[15] = 0x80;
6322
6323 sense_buf[16] =
6324 ((IPR_FIELD_POINTER_MASK &
6325 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
6326 sense_buf[17] =
6327 (IPR_FIELD_POINTER_MASK &
6328 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
6329 } else {
6330 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
6331 if (ipr_is_vset_device(res))
6332 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6333 else
6334 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
6335
6336 sense_buf[0] |= 0x80; /* Or in the Valid bit */
6337 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
6338 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
6339 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
6340 sense_buf[6] = failing_lba & 0x000000ff;
6341 }
6342
6343 sense_buf[7] = 6; /* additional length */
6344 }
6345 }
6346 }
6347
6348 /**
6349 * ipr_get_autosense - Copy autosense data to sense buffer
6350 * @ipr_cmd: ipr command struct
6351 *
6352 * This function copies the autosense buffer to the buffer
6353 * in the scsi_cmd, if there is autosense available.
6354 *
6355 * Return value:
6356 * 1 if autosense was available / 0 if not
6357 **/
6358 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
6359 {
6360 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6361 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
6362
6363 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
6364 return 0;
6365
6366 if (ipr_cmd->ioa_cfg->sis64)
6367 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
6368 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
6369 SCSI_SENSE_BUFFERSIZE));
6370 else
6371 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
6372 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
6373 SCSI_SENSE_BUFFERSIZE));
6374 return 1;
6375 }
6376
6377 /**
6378 * ipr_erp_start - Process an error response for a SCSI op
6379 * @ioa_cfg: ioa config struct
6380 * @ipr_cmd: ipr command struct
6381 *
6382 * This function determines whether or not to initiate ERP
6383 * on the affected device.
6384 *
6385 * Return value:
6386 * nothing
6387 **/
6388 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
6389 struct ipr_cmnd *ipr_cmd)
6390 {
6391 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6392 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6393 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6394 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
6395
6396 if (!res) {
6397 __ipr_scsi_eh_done(ipr_cmd);
6398 return;
6399 }
6400
6401 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
6402 ipr_gen_sense(ipr_cmd);
6403
6404 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6405
6406 switch (masked_ioasc) {
6407 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
6408 if (ipr_is_naca_model(res))
6409 scsi_cmd->result |= (DID_ABORT << 16);
6410 else
6411 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6412 break;
6413 case IPR_IOASC_IR_RESOURCE_HANDLE:
6414 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
6415 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6416 break;
6417 case IPR_IOASC_HW_SEL_TIMEOUT:
6418 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6419 if (!ipr_is_naca_model(res))
6420 res->needs_sync_complete = 1;
6421 break;
6422 case IPR_IOASC_SYNC_REQUIRED:
6423 if (!res->in_erp)
6424 res->needs_sync_complete = 1;
6425 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6426 break;
6427 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
6428 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
6429 /*
6430 * exception: do not set DID_PASSTHROUGH on CHECK CONDITION
6431 * so SCSI mid-layer and upper layers handle it accordingly.
6432 */
6433 if (scsi_cmd->result != SAM_STAT_CHECK_CONDITION)
6434 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
6435 break;
6436 case IPR_IOASC_BUS_WAS_RESET:
6437 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
6438 /*
6439 * Report the bus reset and ask for a retry. The device
6440 * will give CC/UA the next command.
6441 */
6442 if (!res->resetting_device)
6443 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
6444 scsi_cmd->result |= (DID_ERROR << 16);
6445 if (!ipr_is_naca_model(res))
6446 res->needs_sync_complete = 1;
6447 break;
6448 case IPR_IOASC_HW_DEV_BUS_STATUS:
6449 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
6450 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
6451 if (!ipr_get_autosense(ipr_cmd)) {
6452 if (!ipr_is_naca_model(res)) {
6453 ipr_erp_cancel_all(ipr_cmd);
6454 return;
6455 }
6456 }
6457 }
6458 if (!ipr_is_naca_model(res))
6459 res->needs_sync_complete = 1;
6460 break;
6461 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
6462 break;
6463 case IPR_IOASC_IR_NON_OPTIMIZED:
6464 if (res->raw_mode) {
6465 res->raw_mode = 0;
6466 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6467 } else
6468 scsi_cmd->result |= (DID_ERROR << 16);
6469 break;
6470 default:
6471 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6472 scsi_cmd->result |= (DID_ERROR << 16);
6473 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
6474 res->needs_sync_complete = 1;
6475 break;
6476 }
6477
6478 scsi_dma_unmap(ipr_cmd->scsi_cmd);
6479 scsi_cmd->scsi_done(scsi_cmd);
6480 if (ipr_cmd->eh_comp)
6481 complete(ipr_cmd->eh_comp);
6482 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6483 }
6484
6485 /**
6486 * ipr_scsi_done - mid-layer done function
6487 * @ipr_cmd: ipr command struct
6488 *
6489 * This function is invoked by the interrupt handler for
6490 * ops generated by the SCSI mid-layer
6491 *
6492 * Return value:
6493 * none
6494 **/
6495 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
6496 {
6497 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6498 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6499 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6500 unsigned long lock_flags;
6501
6502 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
6503
6504 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
6505 scsi_dma_unmap(scsi_cmd);
6506
6507 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
6508 scsi_cmd->scsi_done(scsi_cmd);
6509 if (ipr_cmd->eh_comp)
6510 complete(ipr_cmd->eh_comp);
6511 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6512 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
6513 } else {
6514 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6515 spin_lock(&ipr_cmd->hrrq->_lock);
6516 ipr_erp_start(ioa_cfg, ipr_cmd);
6517 spin_unlock(&ipr_cmd->hrrq->_lock);
6518 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6519 }
6520 }
6521
6522 /**
6523 * ipr_queuecommand - Queue a mid-layer request
6524 * @shost: scsi host struct
6525 * @scsi_cmd: scsi command struct
6526 *
6527 * This function queues a request generated by the mid-layer.
6528 *
6529 * Return value:
6530 * 0 on success
6531 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
6532 * SCSI_MLQUEUE_HOST_BUSY if host is busy
6533 **/
6534 static int ipr_queuecommand(struct Scsi_Host *shost,
6535 struct scsi_cmnd *scsi_cmd)
6536 {
6537 struct ipr_ioa_cfg *ioa_cfg;
6538 struct ipr_resource_entry *res;
6539 struct ipr_ioarcb *ioarcb;
6540 struct ipr_cmnd *ipr_cmd;
6541 unsigned long hrrq_flags, lock_flags;
6542 int rc;
6543 struct ipr_hrr_queue *hrrq;
6544 int hrrq_id;
6545
6546 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
6547
6548 scsi_cmd->result = (DID_OK << 16);
6549 res = scsi_cmd->device->hostdata;
6550
6551 if (ipr_is_gata(res) && res->sata_port) {
6552 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6553 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
6554 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6555 return rc;
6556 }
6557
6558 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6559 hrrq = &ioa_cfg->hrrq[hrrq_id];
6560
6561 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6562 /*
6563 * We are currently blocking all devices due to a host reset
6564 * We have told the host to stop giving us new requests, but
6565 * ERP ops don't count. FIXME
6566 */
6567 if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) {
6568 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6569 return SCSI_MLQUEUE_HOST_BUSY;
6570 }
6571
6572 /*
6573 * FIXME - Create scsi_set_host_offline interface
6574 * and the ioa_is_dead check can be removed
6575 */
6576 if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) {
6577 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6578 goto err_nodev;
6579 }
6580
6581 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6582 if (ipr_cmd == NULL) {
6583 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6584 return SCSI_MLQUEUE_HOST_BUSY;
6585 }
6586 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6587
6588 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done);
6589 ioarcb = &ipr_cmd->ioarcb;
6590
6591 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
6592 ipr_cmd->scsi_cmd = scsi_cmd;
6593 ipr_cmd->done = ipr_scsi_eh_done;
6594
6595 if (ipr_is_gscsi(res)) {
6596 if (scsi_cmd->underflow == 0)
6597 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6598
6599 if (res->reset_occurred) {
6600 res->reset_occurred = 0;
6601 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
6602 }
6603 }
6604
6605 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
6606 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6607
6608 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
6609 if (scsi_cmd->flags & SCMD_TAGGED)
6610 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK;
6611 else
6612 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK;
6613 }
6614
6615 if (scsi_cmd->cmnd[0] >= 0xC0 &&
6616 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) {
6617 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6618 }
6619 if (res->raw_mode && ipr_is_af_dasd_device(res)) {
6620 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE;
6621
6622 if (scsi_cmd->underflow == 0)
6623 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6624 }
6625
6626 if (ioa_cfg->sis64)
6627 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
6628 else
6629 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
6630
6631 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6632 if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) {
6633 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6634 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6635 if (!rc)
6636 scsi_dma_unmap(scsi_cmd);
6637 return SCSI_MLQUEUE_HOST_BUSY;
6638 }
6639
6640 if (unlikely(hrrq->ioa_is_dead)) {
6641 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6642 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6643 scsi_dma_unmap(scsi_cmd);
6644 goto err_nodev;
6645 }
6646
6647 ioarcb->res_handle = res->res_handle;
6648 if (res->needs_sync_complete) {
6649 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
6650 res->needs_sync_complete = 0;
6651 }
6652 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q);
6653 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6654 ipr_send_command(ipr_cmd);
6655 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6656 return 0;
6657
6658 err_nodev:
6659 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6660 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
6661 scsi_cmd->result = (DID_NO_CONNECT << 16);
6662 scsi_cmd->scsi_done(scsi_cmd);
6663 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6664 return 0;
6665 }
6666
6667 /**
6668 * ipr_ioctl - IOCTL handler
6669 * @sdev: scsi device struct
6670 * @cmd: IOCTL cmd
6671 * @arg: IOCTL arg
6672 *
6673 * Return value:
6674 * 0 on success / other on failure
6675 **/
6676 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
6677 {
6678 struct ipr_resource_entry *res;
6679
6680 res = (struct ipr_resource_entry *)sdev->hostdata;
6681 if (res && ipr_is_gata(res)) {
6682 if (cmd == HDIO_GET_IDENTITY)
6683 return -ENOTTY;
6684 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
6685 }
6686
6687 return -EINVAL;
6688 }
6689
6690 /**
6691 * ipr_info - Get information about the card/driver
6692 * @scsi_host: scsi host struct
6693 *
6694 * Return value:
6695 * pointer to buffer with description string
6696 **/
6697 static const char *ipr_ioa_info(struct Scsi_Host *host)
6698 {
6699 static char buffer[512];
6700 struct ipr_ioa_cfg *ioa_cfg;
6701 unsigned long lock_flags = 0;
6702
6703 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
6704
6705 spin_lock_irqsave(host->host_lock, lock_flags);
6706 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
6707 spin_unlock_irqrestore(host->host_lock, lock_flags);
6708
6709 return buffer;
6710 }
6711
6712 static struct scsi_host_template driver_template = {
6713 .module = THIS_MODULE,
6714 .name = "IPR",
6715 .info = ipr_ioa_info,
6716 .ioctl = ipr_ioctl,
6717 .queuecommand = ipr_queuecommand,
6718 .eh_abort_handler = ipr_eh_abort,
6719 .eh_device_reset_handler = ipr_eh_dev_reset,
6720 .eh_host_reset_handler = ipr_eh_host_reset,
6721 .slave_alloc = ipr_slave_alloc,
6722 .slave_configure = ipr_slave_configure,
6723 .slave_destroy = ipr_slave_destroy,
6724 .scan_finished = ipr_scan_finished,
6725 .target_alloc = ipr_target_alloc,
6726 .target_destroy = ipr_target_destroy,
6727 .change_queue_depth = ipr_change_queue_depth,
6728 .bios_param = ipr_biosparam,
6729 .can_queue = IPR_MAX_COMMANDS,
6730 .this_id = -1,
6731 .sg_tablesize = IPR_MAX_SGLIST,
6732 .max_sectors = IPR_IOA_MAX_SECTORS,
6733 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
6734 .use_clustering = ENABLE_CLUSTERING,
6735 .shost_attrs = ipr_ioa_attrs,
6736 .sdev_attrs = ipr_dev_attrs,
6737 .proc_name = IPR_NAME,
6738 };
6739
6740 /**
6741 * ipr_ata_phy_reset - libata phy_reset handler
6742 * @ap: ata port to reset
6743 *
6744 **/
6745 static void ipr_ata_phy_reset(struct ata_port *ap)
6746 {
6747 unsigned long flags;
6748 struct ipr_sata_port *sata_port = ap->private_data;
6749 struct ipr_resource_entry *res = sata_port->res;
6750 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6751 int rc;
6752
6753 ENTER;
6754 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6755 while (ioa_cfg->in_reset_reload) {
6756 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6757 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6758 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6759 }
6760
6761 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
6762 goto out_unlock;
6763
6764 rc = ipr_device_reset(ioa_cfg, res);
6765
6766 if (rc) {
6767 ap->link.device[0].class = ATA_DEV_NONE;
6768 goto out_unlock;
6769 }
6770
6771 ap->link.device[0].class = res->ata_class;
6772 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
6773 ap->link.device[0].class = ATA_DEV_NONE;
6774
6775 out_unlock:
6776 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6777 LEAVE;
6778 }
6779
6780 /**
6781 * ipr_ata_post_internal - Cleanup after an internal command
6782 * @qc: ATA queued command
6783 *
6784 * Return value:
6785 * none
6786 **/
6787 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
6788 {
6789 struct ipr_sata_port *sata_port = qc->ap->private_data;
6790 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6791 struct ipr_cmnd *ipr_cmd;
6792 struct ipr_hrr_queue *hrrq;
6793 unsigned long flags;
6794
6795 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6796 while (ioa_cfg->in_reset_reload) {
6797 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6798 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6799 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6800 }
6801
6802 for_each_hrrq(hrrq, ioa_cfg) {
6803 spin_lock(&hrrq->_lock);
6804 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
6805 if (ipr_cmd->qc == qc) {
6806 ipr_device_reset(ioa_cfg, sata_port->res);
6807 break;
6808 }
6809 }
6810 spin_unlock(&hrrq->_lock);
6811 }
6812 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6813 }
6814
6815 /**
6816 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6817 * @regs: destination
6818 * @tf: source ATA taskfile
6819 *
6820 * Return value:
6821 * none
6822 **/
6823 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6824 struct ata_taskfile *tf)
6825 {
6826 regs->feature = tf->feature;
6827 regs->nsect = tf->nsect;
6828 regs->lbal = tf->lbal;
6829 regs->lbam = tf->lbam;
6830 regs->lbah = tf->lbah;
6831 regs->device = tf->device;
6832 regs->command = tf->command;
6833 regs->hob_feature = tf->hob_feature;
6834 regs->hob_nsect = tf->hob_nsect;
6835 regs->hob_lbal = tf->hob_lbal;
6836 regs->hob_lbam = tf->hob_lbam;
6837 regs->hob_lbah = tf->hob_lbah;
6838 regs->ctl = tf->ctl;
6839 }
6840
6841 /**
6842 * ipr_sata_done - done function for SATA commands
6843 * @ipr_cmd: ipr command struct
6844 *
6845 * This function is invoked by the interrupt handler for
6846 * ops generated by the SCSI mid-layer to SATA devices
6847 *
6848 * Return value:
6849 * none
6850 **/
6851 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6852 {
6853 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6854 struct ata_queued_cmd *qc = ipr_cmd->qc;
6855 struct ipr_sata_port *sata_port = qc->ap->private_data;
6856 struct ipr_resource_entry *res = sata_port->res;
6857 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6858
6859 spin_lock(&ipr_cmd->hrrq->_lock);
6860 if (ipr_cmd->ioa_cfg->sis64)
6861 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6862 sizeof(struct ipr_ioasa_gata));
6863 else
6864 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6865 sizeof(struct ipr_ioasa_gata));
6866 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6867
6868 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6869 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6870
6871 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6872 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6873 else
6874 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6875 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6876 spin_unlock(&ipr_cmd->hrrq->_lock);
6877 ata_qc_complete(qc);
6878 }
6879
6880 /**
6881 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6882 * @ipr_cmd: ipr command struct
6883 * @qc: ATA queued command
6884 *
6885 **/
6886 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6887 struct ata_queued_cmd *qc)
6888 {
6889 u32 ioadl_flags = 0;
6890 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6891 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64;
6892 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6893 int len = qc->nbytes;
6894 struct scatterlist *sg;
6895 unsigned int si;
6896 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6897
6898 if (len == 0)
6899 return;
6900
6901 if (qc->dma_dir == DMA_TO_DEVICE) {
6902 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6903 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6904 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6905 ioadl_flags = IPR_IOADL_FLAGS_READ;
6906
6907 ioarcb->data_transfer_length = cpu_to_be32(len);
6908 ioarcb->ioadl_len =
6909 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6910 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6911 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64));
6912
6913 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6914 ioadl64->flags = cpu_to_be32(ioadl_flags);
6915 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6916 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6917
6918 last_ioadl64 = ioadl64;
6919 ioadl64++;
6920 }
6921
6922 if (likely(last_ioadl64))
6923 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6924 }
6925
6926 /**
6927 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6928 * @ipr_cmd: ipr command struct
6929 * @qc: ATA queued command
6930 *
6931 **/
6932 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6933 struct ata_queued_cmd *qc)
6934 {
6935 u32 ioadl_flags = 0;
6936 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6937 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6938 struct ipr_ioadl_desc *last_ioadl = NULL;
6939 int len = qc->nbytes;
6940 struct scatterlist *sg;
6941 unsigned int si;
6942
6943 if (len == 0)
6944 return;
6945
6946 if (qc->dma_dir == DMA_TO_DEVICE) {
6947 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6948 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6949 ioarcb->data_transfer_length = cpu_to_be32(len);
6950 ioarcb->ioadl_len =
6951 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6952 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6953 ioadl_flags = IPR_IOADL_FLAGS_READ;
6954 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6955 ioarcb->read_ioadl_len =
6956 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6957 }
6958
6959 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6960 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6961 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6962
6963 last_ioadl = ioadl;
6964 ioadl++;
6965 }
6966
6967 if (likely(last_ioadl))
6968 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6969 }
6970
6971 /**
6972 * ipr_qc_defer - Get a free ipr_cmd
6973 * @qc: queued command
6974 *
6975 * Return value:
6976 * 0 if success
6977 **/
6978 static int ipr_qc_defer(struct ata_queued_cmd *qc)
6979 {
6980 struct ata_port *ap = qc->ap;
6981 struct ipr_sata_port *sata_port = ap->private_data;
6982 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6983 struct ipr_cmnd *ipr_cmd;
6984 struct ipr_hrr_queue *hrrq;
6985 int hrrq_id;
6986
6987 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6988 hrrq = &ioa_cfg->hrrq[hrrq_id];
6989
6990 qc->lldd_task = NULL;
6991 spin_lock(&hrrq->_lock);
6992 if (unlikely(hrrq->ioa_is_dead)) {
6993 spin_unlock(&hrrq->_lock);
6994 return 0;
6995 }
6996
6997 if (unlikely(!hrrq->allow_cmds)) {
6998 spin_unlock(&hrrq->_lock);
6999 return ATA_DEFER_LINK;
7000 }
7001
7002 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
7003 if (ipr_cmd == NULL) {
7004 spin_unlock(&hrrq->_lock);
7005 return ATA_DEFER_LINK;
7006 }
7007
7008 qc->lldd_task = ipr_cmd;
7009 spin_unlock(&hrrq->_lock);
7010 return 0;
7011 }
7012
7013 /**
7014 * ipr_qc_issue - Issue a SATA qc to a device
7015 * @qc: queued command
7016 *
7017 * Return value:
7018 * 0 if success
7019 **/
7020 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
7021 {
7022 struct ata_port *ap = qc->ap;
7023 struct ipr_sata_port *sata_port = ap->private_data;
7024 struct ipr_resource_entry *res = sata_port->res;
7025 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
7026 struct ipr_cmnd *ipr_cmd;
7027 struct ipr_ioarcb *ioarcb;
7028 struct ipr_ioarcb_ata_regs *regs;
7029
7030 if (qc->lldd_task == NULL)
7031 ipr_qc_defer(qc);
7032
7033 ipr_cmd = qc->lldd_task;
7034 if (ipr_cmd == NULL)
7035 return AC_ERR_SYSTEM;
7036
7037 qc->lldd_task = NULL;
7038 spin_lock(&ipr_cmd->hrrq->_lock);
7039 if (unlikely(!ipr_cmd->hrrq->allow_cmds ||
7040 ipr_cmd->hrrq->ioa_is_dead)) {
7041 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7042 spin_unlock(&ipr_cmd->hrrq->_lock);
7043 return AC_ERR_SYSTEM;
7044 }
7045
7046 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
7047 ioarcb = &ipr_cmd->ioarcb;
7048
7049 if (ioa_cfg->sis64) {
7050 regs = &ipr_cmd->i.ata_ioadl.regs;
7051 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
7052 } else
7053 regs = &ioarcb->u.add_data.u.regs;
7054
7055 memset(regs, 0, sizeof(*regs));
7056 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
7057
7058 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
7059 ipr_cmd->qc = qc;
7060 ipr_cmd->done = ipr_sata_done;
7061 ipr_cmd->ioarcb.res_handle = res->res_handle;
7062 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
7063 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
7064 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
7065 ipr_cmd->dma_use_sg = qc->n_elem;
7066
7067 if (ioa_cfg->sis64)
7068 ipr_build_ata_ioadl64(ipr_cmd, qc);
7069 else
7070 ipr_build_ata_ioadl(ipr_cmd, qc);
7071
7072 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
7073 ipr_copy_sata_tf(regs, &qc->tf);
7074 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
7075 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
7076
7077 switch (qc->tf.protocol) {
7078 case ATA_PROT_NODATA:
7079 case ATA_PROT_PIO:
7080 break;
7081
7082 case ATA_PROT_DMA:
7083 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
7084 break;
7085
7086 case ATAPI_PROT_PIO:
7087 case ATAPI_PROT_NODATA:
7088 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
7089 break;
7090
7091 case ATAPI_PROT_DMA:
7092 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
7093 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
7094 break;
7095
7096 default:
7097 WARN_ON(1);
7098 spin_unlock(&ipr_cmd->hrrq->_lock);
7099 return AC_ERR_INVALID;
7100 }
7101
7102 ipr_send_command(ipr_cmd);
7103 spin_unlock(&ipr_cmd->hrrq->_lock);
7104
7105 return 0;
7106 }
7107
7108 /**
7109 * ipr_qc_fill_rtf - Read result TF
7110 * @qc: ATA queued command
7111 *
7112 * Return value:
7113 * true
7114 **/
7115 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
7116 {
7117 struct ipr_sata_port *sata_port = qc->ap->private_data;
7118 struct ipr_ioasa_gata *g = &sata_port->ioasa;
7119 struct ata_taskfile *tf = &qc->result_tf;
7120
7121 tf->feature = g->error;
7122 tf->nsect = g->nsect;
7123 tf->lbal = g->lbal;
7124 tf->lbam = g->lbam;
7125 tf->lbah = g->lbah;
7126 tf->device = g->device;
7127 tf->command = g->status;
7128 tf->hob_nsect = g->hob_nsect;
7129 tf->hob_lbal = g->hob_lbal;
7130 tf->hob_lbam = g->hob_lbam;
7131 tf->hob_lbah = g->hob_lbah;
7132
7133 return true;
7134 }
7135
7136 static struct ata_port_operations ipr_sata_ops = {
7137 .phy_reset = ipr_ata_phy_reset,
7138 .hardreset = ipr_sata_reset,
7139 .post_internal_cmd = ipr_ata_post_internal,
7140 .qc_prep = ata_noop_qc_prep,
7141 .qc_defer = ipr_qc_defer,
7142 .qc_issue = ipr_qc_issue,
7143 .qc_fill_rtf = ipr_qc_fill_rtf,
7144 .port_start = ata_sas_port_start,
7145 .port_stop = ata_sas_port_stop
7146 };
7147
7148 static struct ata_port_info sata_port_info = {
7149 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
7150 ATA_FLAG_SAS_HOST,
7151 .pio_mask = ATA_PIO4_ONLY,
7152 .mwdma_mask = ATA_MWDMA2,
7153 .udma_mask = ATA_UDMA6,
7154 .port_ops = &ipr_sata_ops
7155 };
7156
7157 #ifdef CONFIG_PPC_PSERIES
7158 static const u16 ipr_blocked_processors[] = {
7159 PVR_NORTHSTAR,
7160 PVR_PULSAR,
7161 PVR_POWER4,
7162 PVR_ICESTAR,
7163 PVR_SSTAR,
7164 PVR_POWER4p,
7165 PVR_630,
7166 PVR_630p
7167 };
7168
7169 /**
7170 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
7171 * @ioa_cfg: ioa cfg struct
7172 *
7173 * Adapters that use Gemstone revision < 3.1 do not work reliably on
7174 * certain pSeries hardware. This function determines if the given
7175 * adapter is in one of these confgurations or not.
7176 *
7177 * Return value:
7178 * 1 if adapter is not supported / 0 if adapter is supported
7179 **/
7180 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
7181 {
7182 int i;
7183
7184 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
7185 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) {
7186 if (pvr_version_is(ipr_blocked_processors[i]))
7187 return 1;
7188 }
7189 }
7190 return 0;
7191 }
7192 #else
7193 #define ipr_invalid_adapter(ioa_cfg) 0
7194 #endif
7195
7196 /**
7197 * ipr_ioa_bringdown_done - IOA bring down completion.
7198 * @ipr_cmd: ipr command struct
7199 *
7200 * This function processes the completion of an adapter bring down.
7201 * It wakes any reset sleepers.
7202 *
7203 * Return value:
7204 * IPR_RC_JOB_RETURN
7205 **/
7206 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
7207 {
7208 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7209 int i;
7210
7211 ENTER;
7212 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
7213 ipr_trace;
7214 spin_unlock_irq(ioa_cfg->host->host_lock);
7215 scsi_unblock_requests(ioa_cfg->host);
7216 spin_lock_irq(ioa_cfg->host->host_lock);
7217 }
7218
7219 ioa_cfg->in_reset_reload = 0;
7220 ioa_cfg->reset_retries = 0;
7221 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
7222 spin_lock(&ioa_cfg->hrrq[i]._lock);
7223 ioa_cfg->hrrq[i].ioa_is_dead = 1;
7224 spin_unlock(&ioa_cfg->hrrq[i]._lock);
7225 }
7226 wmb();
7227
7228 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7229 wake_up_all(&ioa_cfg->reset_wait_q);
7230 LEAVE;
7231
7232 return IPR_RC_JOB_RETURN;
7233 }
7234
7235 /**
7236 * ipr_ioa_reset_done - IOA reset completion.
7237 * @ipr_cmd: ipr command struct
7238 *
7239 * This function processes the completion of an adapter reset.
7240 * It schedules any necessary mid-layer add/removes and
7241 * wakes any reset sleepers.
7242 *
7243 * Return value:
7244 * IPR_RC_JOB_RETURN
7245 **/
7246 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
7247 {
7248 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7249 struct ipr_resource_entry *res;
7250 int j;
7251
7252 ENTER;
7253 ioa_cfg->in_reset_reload = 0;
7254 for (j = 0; j < ioa_cfg->hrrq_num; j++) {
7255 spin_lock(&ioa_cfg->hrrq[j]._lock);
7256 ioa_cfg->hrrq[j].allow_cmds = 1;
7257 spin_unlock(&ioa_cfg->hrrq[j]._lock);
7258 }
7259 wmb();
7260 ioa_cfg->reset_cmd = NULL;
7261 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
7262
7263 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
7264 if (res->add_to_ml || res->del_from_ml) {
7265 ipr_trace;
7266 break;
7267 }
7268 }
7269 schedule_work(&ioa_cfg->work_q);
7270
7271 for (j = 0; j < IPR_NUM_HCAMS; j++) {
7272 list_del_init(&ioa_cfg->hostrcb[j]->queue);
7273 if (j < IPR_NUM_LOG_HCAMS)
7274 ipr_send_hcam(ioa_cfg,
7275 IPR_HCAM_CDB_OP_CODE_LOG_DATA,
7276 ioa_cfg->hostrcb[j]);
7277 else
7278 ipr_send_hcam(ioa_cfg,
7279 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
7280 ioa_cfg->hostrcb[j]);
7281 }
7282
7283 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
7284 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
7285
7286 ioa_cfg->reset_retries = 0;
7287 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7288 wake_up_all(&ioa_cfg->reset_wait_q);
7289
7290 spin_unlock(ioa_cfg->host->host_lock);
7291 scsi_unblock_requests(ioa_cfg->host);
7292 spin_lock(ioa_cfg->host->host_lock);
7293
7294 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
7295 scsi_block_requests(ioa_cfg->host);
7296
7297 schedule_work(&ioa_cfg->work_q);
7298 LEAVE;
7299 return IPR_RC_JOB_RETURN;
7300 }
7301
7302 /**
7303 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
7304 * @supported_dev: supported device struct
7305 * @vpids: vendor product id struct
7306 *
7307 * Return value:
7308 * none
7309 **/
7310 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
7311 struct ipr_std_inq_vpids *vpids)
7312 {
7313 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
7314 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
7315 supported_dev->num_records = 1;
7316 supported_dev->data_length =
7317 cpu_to_be16(sizeof(struct ipr_supported_device));
7318 supported_dev->reserved = 0;
7319 }
7320
7321 /**
7322 * ipr_set_supported_devs - Send Set Supported Devices for a device
7323 * @ipr_cmd: ipr command struct
7324 *
7325 * This function sends a Set Supported Devices to the adapter
7326 *
7327 * Return value:
7328 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7329 **/
7330 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
7331 {
7332 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7333 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
7334 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7335 struct ipr_resource_entry *res = ipr_cmd->u.res;
7336
7337 ipr_cmd->job_step = ipr_ioa_reset_done;
7338
7339 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
7340 if (!ipr_is_scsi_disk(res))
7341 continue;
7342
7343 ipr_cmd->u.res = res;
7344 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
7345
7346 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7347 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7348 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7349
7350 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
7351 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
7352 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
7353 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
7354
7355 ipr_init_ioadl(ipr_cmd,
7356 ioa_cfg->vpd_cbs_dma +
7357 offsetof(struct ipr_misc_cbs, supp_dev),
7358 sizeof(struct ipr_supported_device),
7359 IPR_IOADL_FLAGS_WRITE_LAST);
7360
7361 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7362 IPR_SET_SUP_DEVICE_TIMEOUT);
7363
7364 if (!ioa_cfg->sis64)
7365 ipr_cmd->job_step = ipr_set_supported_devs;
7366 LEAVE;
7367 return IPR_RC_JOB_RETURN;
7368 }
7369
7370 LEAVE;
7371 return IPR_RC_JOB_CONTINUE;
7372 }
7373
7374 /**
7375 * ipr_get_mode_page - Locate specified mode page
7376 * @mode_pages: mode page buffer
7377 * @page_code: page code to find
7378 * @len: minimum required length for mode page
7379 *
7380 * Return value:
7381 * pointer to mode page / NULL on failure
7382 **/
7383 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
7384 u32 page_code, u32 len)
7385 {
7386 struct ipr_mode_page_hdr *mode_hdr;
7387 u32 page_length;
7388 u32 length;
7389
7390 if (!mode_pages || (mode_pages->hdr.length == 0))
7391 return NULL;
7392
7393 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
7394 mode_hdr = (struct ipr_mode_page_hdr *)
7395 (mode_pages->data + mode_pages->hdr.block_desc_len);
7396
7397 while (length) {
7398 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
7399 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
7400 return mode_hdr;
7401 break;
7402 } else {
7403 page_length = (sizeof(struct ipr_mode_page_hdr) +
7404 mode_hdr->page_length);
7405 length -= page_length;
7406 mode_hdr = (struct ipr_mode_page_hdr *)
7407 ((unsigned long)mode_hdr + page_length);
7408 }
7409 }
7410 return NULL;
7411 }
7412
7413 /**
7414 * ipr_check_term_power - Check for term power errors
7415 * @ioa_cfg: ioa config struct
7416 * @mode_pages: IOAFP mode pages buffer
7417 *
7418 * Check the IOAFP's mode page 28 for term power errors
7419 *
7420 * Return value:
7421 * nothing
7422 **/
7423 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
7424 struct ipr_mode_pages *mode_pages)
7425 {
7426 int i;
7427 int entry_length;
7428 struct ipr_dev_bus_entry *bus;
7429 struct ipr_mode_page28 *mode_page;
7430
7431 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7432 sizeof(struct ipr_mode_page28));
7433
7434 entry_length = mode_page->entry_length;
7435
7436 bus = mode_page->bus;
7437
7438 for (i = 0; i < mode_page->num_entries; i++) {
7439 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
7440 dev_err(&ioa_cfg->pdev->dev,
7441 "Term power is absent on scsi bus %d\n",
7442 bus->res_addr.bus);
7443 }
7444
7445 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
7446 }
7447 }
7448
7449 /**
7450 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
7451 * @ioa_cfg: ioa config struct
7452 *
7453 * Looks through the config table checking for SES devices. If
7454 * the SES device is in the SES table indicating a maximum SCSI
7455 * bus speed, the speed is limited for the bus.
7456 *
7457 * Return value:
7458 * none
7459 **/
7460 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
7461 {
7462 u32 max_xfer_rate;
7463 int i;
7464
7465 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7466 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
7467 ioa_cfg->bus_attr[i].bus_width);
7468
7469 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
7470 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
7471 }
7472 }
7473
7474 /**
7475 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
7476 * @ioa_cfg: ioa config struct
7477 * @mode_pages: mode page 28 buffer
7478 *
7479 * Updates mode page 28 based on driver configuration
7480 *
7481 * Return value:
7482 * none
7483 **/
7484 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
7485 struct ipr_mode_pages *mode_pages)
7486 {
7487 int i, entry_length;
7488 struct ipr_dev_bus_entry *bus;
7489 struct ipr_bus_attributes *bus_attr;
7490 struct ipr_mode_page28 *mode_page;
7491
7492 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7493 sizeof(struct ipr_mode_page28));
7494
7495 entry_length = mode_page->entry_length;
7496
7497 /* Loop for each device bus entry */
7498 for (i = 0, bus = mode_page->bus;
7499 i < mode_page->num_entries;
7500 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
7501 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
7502 dev_err(&ioa_cfg->pdev->dev,
7503 "Invalid resource address reported: 0x%08X\n",
7504 IPR_GET_PHYS_LOC(bus->res_addr));
7505 continue;
7506 }
7507
7508 bus_attr = &ioa_cfg->bus_attr[i];
7509 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
7510 bus->bus_width = bus_attr->bus_width;
7511 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
7512 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
7513 if (bus_attr->qas_enabled)
7514 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
7515 else
7516 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
7517 }
7518 }
7519
7520 /**
7521 * ipr_build_mode_select - Build a mode select command
7522 * @ipr_cmd: ipr command struct
7523 * @res_handle: resource handle to send command to
7524 * @parm: Byte 2 of Mode Sense command
7525 * @dma_addr: DMA buffer address
7526 * @xfer_len: data transfer length
7527 *
7528 * Return value:
7529 * none
7530 **/
7531 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
7532 __be32 res_handle, u8 parm,
7533 dma_addr_t dma_addr, u8 xfer_len)
7534 {
7535 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7536
7537 ioarcb->res_handle = res_handle;
7538 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7539 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7540 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
7541 ioarcb->cmd_pkt.cdb[1] = parm;
7542 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7543
7544 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
7545 }
7546
7547 /**
7548 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
7549 * @ipr_cmd: ipr command struct
7550 *
7551 * This function sets up the SCSI bus attributes and sends
7552 * a Mode Select for Page 28 to activate them.
7553 *
7554 * Return value:
7555 * IPR_RC_JOB_RETURN
7556 **/
7557 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
7558 {
7559 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7560 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7561 int length;
7562
7563 ENTER;
7564 ipr_scsi_bus_speed_limit(ioa_cfg);
7565 ipr_check_term_power(ioa_cfg, mode_pages);
7566 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
7567 length = mode_pages->hdr.length + 1;
7568 mode_pages->hdr.length = 0;
7569
7570 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7571 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7572 length);
7573
7574 ipr_cmd->job_step = ipr_set_supported_devs;
7575 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7576 struct ipr_resource_entry, queue);
7577 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7578
7579 LEAVE;
7580 return IPR_RC_JOB_RETURN;
7581 }
7582
7583 /**
7584 * ipr_build_mode_sense - Builds a mode sense command
7585 * @ipr_cmd: ipr command struct
7586 * @res: resource entry struct
7587 * @parm: Byte 2 of mode sense command
7588 * @dma_addr: DMA address of mode sense buffer
7589 * @xfer_len: Size of DMA buffer
7590 *
7591 * Return value:
7592 * none
7593 **/
7594 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
7595 __be32 res_handle,
7596 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
7597 {
7598 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7599
7600 ioarcb->res_handle = res_handle;
7601 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
7602 ioarcb->cmd_pkt.cdb[2] = parm;
7603 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7604 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7605
7606 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7607 }
7608
7609 /**
7610 * ipr_reset_cmd_failed - Handle failure of IOA reset command
7611 * @ipr_cmd: ipr command struct
7612 *
7613 * This function handles the failure of an IOA bringup command.
7614 *
7615 * Return value:
7616 * IPR_RC_JOB_RETURN
7617 **/
7618 static int ipr_reset_cmd_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 dev_err(&ioa_cfg->pdev->dev,
7624 "0x%02X failed with IOASC: 0x%08X\n",
7625 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
7626
7627 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7628 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7629 return IPR_RC_JOB_RETURN;
7630 }
7631
7632 /**
7633 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
7634 * @ipr_cmd: ipr command struct
7635 *
7636 * This function handles the failure of a Mode Sense to the IOAFP.
7637 * Some adapters do not handle all mode pages.
7638 *
7639 * Return value:
7640 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7641 **/
7642 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
7643 {
7644 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7645 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7646
7647 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7648 ipr_cmd->job_step = ipr_set_supported_devs;
7649 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7650 struct ipr_resource_entry, queue);
7651 return IPR_RC_JOB_CONTINUE;
7652 }
7653
7654 return ipr_reset_cmd_failed(ipr_cmd);
7655 }
7656
7657 /**
7658 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
7659 * @ipr_cmd: ipr command struct
7660 *
7661 * This function send a Page 28 mode sense to the IOA to
7662 * retrieve SCSI bus attributes.
7663 *
7664 * Return value:
7665 * IPR_RC_JOB_RETURN
7666 **/
7667 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
7668 {
7669 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7670
7671 ENTER;
7672 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7673 0x28, ioa_cfg->vpd_cbs_dma +
7674 offsetof(struct ipr_misc_cbs, mode_pages),
7675 sizeof(struct ipr_mode_pages));
7676
7677 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
7678 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
7679
7680 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7681
7682 LEAVE;
7683 return IPR_RC_JOB_RETURN;
7684 }
7685
7686 /**
7687 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
7688 * @ipr_cmd: ipr command struct
7689 *
7690 * This function enables dual IOA RAID support if possible.
7691 *
7692 * Return value:
7693 * IPR_RC_JOB_RETURN
7694 **/
7695 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
7696 {
7697 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7698 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7699 struct ipr_mode_page24 *mode_page;
7700 int length;
7701
7702 ENTER;
7703 mode_page = ipr_get_mode_page(mode_pages, 0x24,
7704 sizeof(struct ipr_mode_page24));
7705
7706 if (mode_page)
7707 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
7708
7709 length = mode_pages->hdr.length + 1;
7710 mode_pages->hdr.length = 0;
7711
7712 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7713 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7714 length);
7715
7716 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7717 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7718
7719 LEAVE;
7720 return IPR_RC_JOB_RETURN;
7721 }
7722
7723 /**
7724 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
7725 * @ipr_cmd: ipr command struct
7726 *
7727 * This function handles the failure of a Mode Sense to the IOAFP.
7728 * Some adapters do not handle all mode pages.
7729 *
7730 * Return value:
7731 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7732 **/
7733 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
7734 {
7735 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7736
7737 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7738 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7739 return IPR_RC_JOB_CONTINUE;
7740 }
7741
7742 return ipr_reset_cmd_failed(ipr_cmd);
7743 }
7744
7745 /**
7746 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
7747 * @ipr_cmd: ipr command struct
7748 *
7749 * This function send a mode sense to the IOA to retrieve
7750 * the IOA Advanced Function Control mode page.
7751 *
7752 * Return value:
7753 * IPR_RC_JOB_RETURN
7754 **/
7755 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
7756 {
7757 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7758
7759 ENTER;
7760 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7761 0x24, ioa_cfg->vpd_cbs_dma +
7762 offsetof(struct ipr_misc_cbs, mode_pages),
7763 sizeof(struct ipr_mode_pages));
7764
7765 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
7766 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
7767
7768 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7769
7770 LEAVE;
7771 return IPR_RC_JOB_RETURN;
7772 }
7773
7774 /**
7775 * ipr_init_res_table - Initialize the resource table
7776 * @ipr_cmd: ipr command struct
7777 *
7778 * This function looks through the existing resource table, comparing
7779 * it with the config table. This function will take care of old/new
7780 * devices and schedule adding/removing them from the mid-layer
7781 * as appropriate.
7782 *
7783 * Return value:
7784 * IPR_RC_JOB_CONTINUE
7785 **/
7786 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
7787 {
7788 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7789 struct ipr_resource_entry *res, *temp;
7790 struct ipr_config_table_entry_wrapper cfgtew;
7791 int entries, found, flag, i;
7792 LIST_HEAD(old_res);
7793
7794 ENTER;
7795 if (ioa_cfg->sis64)
7796 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
7797 else
7798 flag = ioa_cfg->u.cfg_table->hdr.flags;
7799
7800 if (flag & IPR_UCODE_DOWNLOAD_REQ)
7801 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
7802
7803 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
7804 list_move_tail(&res->queue, &old_res);
7805
7806 if (ioa_cfg->sis64)
7807 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
7808 else
7809 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
7810
7811 for (i = 0; i < entries; i++) {
7812 if (ioa_cfg->sis64)
7813 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
7814 else
7815 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
7816 found = 0;
7817
7818 list_for_each_entry_safe(res, temp, &old_res, queue) {
7819 if (ipr_is_same_device(res, &cfgtew)) {
7820 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7821 found = 1;
7822 break;
7823 }
7824 }
7825
7826 if (!found) {
7827 if (list_empty(&ioa_cfg->free_res_q)) {
7828 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
7829 break;
7830 }
7831
7832 found = 1;
7833 res = list_entry(ioa_cfg->free_res_q.next,
7834 struct ipr_resource_entry, queue);
7835 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7836 ipr_init_res_entry(res, &cfgtew);
7837 res->add_to_ml = 1;
7838 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
7839 res->sdev->allow_restart = 1;
7840
7841 if (found)
7842 ipr_update_res_entry(res, &cfgtew);
7843 }
7844
7845 list_for_each_entry_safe(res, temp, &old_res, queue) {
7846 if (res->sdev) {
7847 res->del_from_ml = 1;
7848 res->res_handle = IPR_INVALID_RES_HANDLE;
7849 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7850 }
7851 }
7852
7853 list_for_each_entry_safe(res, temp, &old_res, queue) {
7854 ipr_clear_res_target(res);
7855 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
7856 }
7857
7858 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7859 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
7860 else
7861 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7862
7863 LEAVE;
7864 return IPR_RC_JOB_CONTINUE;
7865 }
7866
7867 /**
7868 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
7869 * @ipr_cmd: ipr command struct
7870 *
7871 * This function sends a Query IOA Configuration command
7872 * to the adapter to retrieve the IOA configuration table.
7873 *
7874 * Return value:
7875 * IPR_RC_JOB_RETURN
7876 **/
7877 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
7878 {
7879 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7880 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7881 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7882 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7883
7884 ENTER;
7885 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7886 ioa_cfg->dual_raid = 1;
7887 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7888 ucode_vpd->major_release, ucode_vpd->card_type,
7889 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7890 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7891 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7892
7893 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7894 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7895 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7896 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7897
7898 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7899 IPR_IOADL_FLAGS_READ_LAST);
7900
7901 ipr_cmd->job_step = ipr_init_res_table;
7902
7903 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7904
7905 LEAVE;
7906 return IPR_RC_JOB_RETURN;
7907 }
7908
7909 static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd)
7910 {
7911 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7912
7913 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT)
7914 return IPR_RC_JOB_CONTINUE;
7915
7916 return ipr_reset_cmd_failed(ipr_cmd);
7917 }
7918
7919 static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd,
7920 __be32 res_handle, u8 sa_code)
7921 {
7922 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7923
7924 ioarcb->res_handle = res_handle;
7925 ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION;
7926 ioarcb->cmd_pkt.cdb[1] = sa_code;
7927 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7928 }
7929
7930 /**
7931 * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service
7932 * action
7933 *
7934 * Return value:
7935 * none
7936 **/
7937 static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd)
7938 {
7939 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7940 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7941 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7942
7943 ENTER;
7944
7945 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7946
7947 if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) {
7948 ipr_build_ioa_service_action(ipr_cmd,
7949 cpu_to_be32(IPR_IOA_RES_HANDLE),
7950 IPR_IOA_SA_CHANGE_CACHE_PARAMS);
7951
7952 ioarcb->cmd_pkt.cdb[2] = 0x40;
7953
7954 ipr_cmd->job_step_failed = ipr_ioa_service_action_failed;
7955 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7956 IPR_SET_SUP_DEVICE_TIMEOUT);
7957
7958 LEAVE;
7959 return IPR_RC_JOB_RETURN;
7960 }
7961
7962 LEAVE;
7963 return IPR_RC_JOB_CONTINUE;
7964 }
7965
7966 /**
7967 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7968 * @ipr_cmd: ipr command struct
7969 *
7970 * This utility function sends an inquiry to the adapter.
7971 *
7972 * Return value:
7973 * none
7974 **/
7975 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7976 dma_addr_t dma_addr, u8 xfer_len)
7977 {
7978 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7979
7980 ENTER;
7981 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7982 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7983
7984 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7985 ioarcb->cmd_pkt.cdb[1] = flags;
7986 ioarcb->cmd_pkt.cdb[2] = page;
7987 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7988
7989 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7990
7991 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7992 LEAVE;
7993 }
7994
7995 /**
7996 * ipr_inquiry_page_supported - Is the given inquiry page supported
7997 * @page0: inquiry page 0 buffer
7998 * @page: page code.
7999 *
8000 * This function determines if the specified inquiry page is supported.
8001 *
8002 * Return value:
8003 * 1 if page is supported / 0 if not
8004 **/
8005 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
8006 {
8007 int i;
8008
8009 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
8010 if (page0->page[i] == page)
8011 return 1;
8012
8013 return 0;
8014 }
8015
8016 /**
8017 * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter.
8018 * @ipr_cmd: ipr command struct
8019 *
8020 * This function sends a Page 0xC4 inquiry to the adapter
8021 * to retrieve software VPD information.
8022 *
8023 * Return value:
8024 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8025 **/
8026 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd)
8027 {
8028 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8029 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
8030 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
8031
8032 ENTER;
8033 ipr_cmd->job_step = ipr_ioafp_set_caching_parameters;
8034 memset(pageC4, 0, sizeof(*pageC4));
8035
8036 if (ipr_inquiry_page_supported(page0, 0xC4)) {
8037 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4,
8038 (ioa_cfg->vpd_cbs_dma
8039 + offsetof(struct ipr_misc_cbs,
8040 pageC4_data)),
8041 sizeof(struct ipr_inquiry_pageC4));
8042 return IPR_RC_JOB_RETURN;
8043 }
8044
8045 LEAVE;
8046 return IPR_RC_JOB_CONTINUE;
8047 }
8048
8049 /**
8050 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
8051 * @ipr_cmd: ipr command struct
8052 *
8053 * This function sends a Page 0xD0 inquiry to the adapter
8054 * to retrieve adapter capabilities.
8055 *
8056 * Return value:
8057 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8058 **/
8059 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
8060 {
8061 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8062 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
8063 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
8064
8065 ENTER;
8066 ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry;
8067 memset(cap, 0, sizeof(*cap));
8068
8069 if (ipr_inquiry_page_supported(page0, 0xD0)) {
8070 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
8071 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
8072 sizeof(struct ipr_inquiry_cap));
8073 return IPR_RC_JOB_RETURN;
8074 }
8075
8076 LEAVE;
8077 return IPR_RC_JOB_CONTINUE;
8078 }
8079
8080 /**
8081 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
8082 * @ipr_cmd: ipr command struct
8083 *
8084 * This function sends a Page 3 inquiry to the adapter
8085 * to retrieve software VPD information.
8086 *
8087 * Return value:
8088 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8089 **/
8090 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
8091 {
8092 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8093
8094 ENTER;
8095
8096 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
8097
8098 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
8099 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
8100 sizeof(struct ipr_inquiry_page3));
8101
8102 LEAVE;
8103 return IPR_RC_JOB_RETURN;
8104 }
8105
8106 /**
8107 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
8108 * @ipr_cmd: ipr command struct
8109 *
8110 * This function sends a Page 0 inquiry to the adapter
8111 * to retrieve supported inquiry pages.
8112 *
8113 * Return value:
8114 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8115 **/
8116 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
8117 {
8118 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8119 char type[5];
8120
8121 ENTER;
8122
8123 /* Grab the type out of the VPD and store it away */
8124 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
8125 type[4] = '\0';
8126 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
8127
8128 if (ipr_invalid_adapter(ioa_cfg)) {
8129 dev_err(&ioa_cfg->pdev->dev,
8130 "Adapter not supported in this hardware configuration.\n");
8131
8132 if (!ipr_testmode) {
8133 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
8134 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8135 list_add_tail(&ipr_cmd->queue,
8136 &ioa_cfg->hrrq->hrrq_free_q);
8137 return IPR_RC_JOB_RETURN;
8138 }
8139 }
8140
8141 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
8142
8143 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
8144 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
8145 sizeof(struct ipr_inquiry_page0));
8146
8147 LEAVE;
8148 return IPR_RC_JOB_RETURN;
8149 }
8150
8151 /**
8152 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
8153 * @ipr_cmd: ipr command struct
8154 *
8155 * This function sends a standard inquiry to the adapter.
8156 *
8157 * Return value:
8158 * IPR_RC_JOB_RETURN
8159 **/
8160 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
8161 {
8162 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8163
8164 ENTER;
8165 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
8166
8167 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
8168 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
8169 sizeof(struct ipr_ioa_vpd));
8170
8171 LEAVE;
8172 return IPR_RC_JOB_RETURN;
8173 }
8174
8175 /**
8176 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
8177 * @ipr_cmd: ipr command struct
8178 *
8179 * This function send an Identify Host Request Response Queue
8180 * command to establish the HRRQ with the adapter.
8181 *
8182 * Return value:
8183 * IPR_RC_JOB_RETURN
8184 **/
8185 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
8186 {
8187 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8188 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
8189 struct ipr_hrr_queue *hrrq;
8190
8191 ENTER;
8192 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
8193 if (ioa_cfg->identify_hrrq_index == 0)
8194 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
8195
8196 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) {
8197 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index];
8198
8199 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
8200 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8201
8202 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8203 if (ioa_cfg->sis64)
8204 ioarcb->cmd_pkt.cdb[1] = 0x1;
8205
8206 if (ioa_cfg->nvectors == 1)
8207 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE;
8208 else
8209 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE;
8210
8211 ioarcb->cmd_pkt.cdb[2] =
8212 ((u64) hrrq->host_rrq_dma >> 24) & 0xff;
8213 ioarcb->cmd_pkt.cdb[3] =
8214 ((u64) hrrq->host_rrq_dma >> 16) & 0xff;
8215 ioarcb->cmd_pkt.cdb[4] =
8216 ((u64) hrrq->host_rrq_dma >> 8) & 0xff;
8217 ioarcb->cmd_pkt.cdb[5] =
8218 ((u64) hrrq->host_rrq_dma) & 0xff;
8219 ioarcb->cmd_pkt.cdb[7] =
8220 ((sizeof(u32) * hrrq->size) >> 8) & 0xff;
8221 ioarcb->cmd_pkt.cdb[8] =
8222 (sizeof(u32) * hrrq->size) & 0xff;
8223
8224 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
8225 ioarcb->cmd_pkt.cdb[9] =
8226 ioa_cfg->identify_hrrq_index;
8227
8228 if (ioa_cfg->sis64) {
8229 ioarcb->cmd_pkt.cdb[10] =
8230 ((u64) hrrq->host_rrq_dma >> 56) & 0xff;
8231 ioarcb->cmd_pkt.cdb[11] =
8232 ((u64) hrrq->host_rrq_dma >> 48) & 0xff;
8233 ioarcb->cmd_pkt.cdb[12] =
8234 ((u64) hrrq->host_rrq_dma >> 40) & 0xff;
8235 ioarcb->cmd_pkt.cdb[13] =
8236 ((u64) hrrq->host_rrq_dma >> 32) & 0xff;
8237 }
8238
8239 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
8240 ioarcb->cmd_pkt.cdb[14] =
8241 ioa_cfg->identify_hrrq_index;
8242
8243 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8244 IPR_INTERNAL_TIMEOUT);
8245
8246 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num)
8247 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8248
8249 LEAVE;
8250 return IPR_RC_JOB_RETURN;
8251 }
8252
8253 LEAVE;
8254 return IPR_RC_JOB_CONTINUE;
8255 }
8256
8257 /**
8258 * ipr_reset_timer_done - Adapter reset timer function
8259 * @ipr_cmd: ipr command struct
8260 *
8261 * Description: This function is used in adapter reset processing
8262 * for timing events. If the reset_cmd pointer in the IOA
8263 * config struct is not this adapter's we are doing nested
8264 * resets and fail_all_ops will take care of freeing the
8265 * command block.
8266 *
8267 * Return value:
8268 * none
8269 **/
8270 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
8271 {
8272 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8273 unsigned long lock_flags = 0;
8274
8275 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8276
8277 if (ioa_cfg->reset_cmd == ipr_cmd) {
8278 list_del(&ipr_cmd->queue);
8279 ipr_cmd->done(ipr_cmd);
8280 }
8281
8282 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8283 }
8284
8285 /**
8286 * ipr_reset_start_timer - Start a timer for adapter reset job
8287 * @ipr_cmd: ipr command struct
8288 * @timeout: timeout value
8289 *
8290 * Description: This function is used in adapter reset processing
8291 * for timing events. If the reset_cmd pointer in the IOA
8292 * config struct is not this adapter's we are doing nested
8293 * resets and fail_all_ops will take care of freeing the
8294 * command block.
8295 *
8296 * Return value:
8297 * none
8298 **/
8299 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
8300 unsigned long timeout)
8301 {
8302
8303 ENTER;
8304 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8305 ipr_cmd->done = ipr_reset_ioa_job;
8306
8307 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8308 ipr_cmd->timer.expires = jiffies + timeout;
8309 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
8310 add_timer(&ipr_cmd->timer);
8311 }
8312
8313 /**
8314 * ipr_init_ioa_mem - Initialize ioa_cfg control block
8315 * @ioa_cfg: ioa cfg struct
8316 *
8317 * Return value:
8318 * nothing
8319 **/
8320 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
8321 {
8322 struct ipr_hrr_queue *hrrq;
8323
8324 for_each_hrrq(hrrq, ioa_cfg) {
8325 spin_lock(&hrrq->_lock);
8326 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size);
8327
8328 /* Initialize Host RRQ pointers */
8329 hrrq->hrrq_start = hrrq->host_rrq;
8330 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1];
8331 hrrq->hrrq_curr = hrrq->hrrq_start;
8332 hrrq->toggle_bit = 1;
8333 spin_unlock(&hrrq->_lock);
8334 }
8335 wmb();
8336
8337 ioa_cfg->identify_hrrq_index = 0;
8338 if (ioa_cfg->hrrq_num == 1)
8339 atomic_set(&ioa_cfg->hrrq_index, 0);
8340 else
8341 atomic_set(&ioa_cfg->hrrq_index, 1);
8342
8343 /* Zero out config table */
8344 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
8345 }
8346
8347 /**
8348 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
8349 * @ipr_cmd: ipr command struct
8350 *
8351 * Return value:
8352 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8353 **/
8354 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
8355 {
8356 unsigned long stage, stage_time;
8357 u32 feedback;
8358 volatile u32 int_reg;
8359 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8360 u64 maskval = 0;
8361
8362 feedback = readl(ioa_cfg->regs.init_feedback_reg);
8363 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
8364 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
8365
8366 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
8367
8368 /* sanity check the stage_time value */
8369 if (stage_time == 0)
8370 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
8371 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
8372 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
8373 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
8374 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
8375
8376 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
8377 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
8378 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8379 stage_time = ioa_cfg->transop_timeout;
8380 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8381 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
8382 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8383 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8384 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8385 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8386 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
8387 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
8388 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8389 return IPR_RC_JOB_CONTINUE;
8390 }
8391 }
8392
8393 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8394 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
8395 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8396 ipr_cmd->done = ipr_reset_ioa_job;
8397 add_timer(&ipr_cmd->timer);
8398
8399 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8400
8401 return IPR_RC_JOB_RETURN;
8402 }
8403
8404 /**
8405 * ipr_reset_enable_ioa - Enable the IOA following a reset.
8406 * @ipr_cmd: ipr command struct
8407 *
8408 * This function reinitializes some control blocks and
8409 * enables destructive diagnostics on the adapter.
8410 *
8411 * Return value:
8412 * IPR_RC_JOB_RETURN
8413 **/
8414 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
8415 {
8416 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8417 volatile u32 int_reg;
8418 volatile u64 maskval;
8419 int i;
8420
8421 ENTER;
8422 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8423 ipr_init_ioa_mem(ioa_cfg);
8424
8425 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8426 spin_lock(&ioa_cfg->hrrq[i]._lock);
8427 ioa_cfg->hrrq[i].allow_interrupts = 1;
8428 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8429 }
8430 wmb();
8431 if (ioa_cfg->sis64) {
8432 /* Set the adapter to the correct endian mode. */
8433 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8434 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8435 }
8436
8437 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8438
8439 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8440 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
8441 ioa_cfg->regs.clr_interrupt_mask_reg32);
8442 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8443 return IPR_RC_JOB_CONTINUE;
8444 }
8445
8446 /* Enable destructive diagnostics on IOA */
8447 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
8448
8449 if (ioa_cfg->sis64) {
8450 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8451 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
8452 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
8453 } else
8454 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
8455
8456 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8457
8458 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
8459
8460 if (ioa_cfg->sis64) {
8461 ipr_cmd->job_step = ipr_reset_next_stage;
8462 return IPR_RC_JOB_CONTINUE;
8463 }
8464
8465 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8466 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
8467 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8468 ipr_cmd->done = ipr_reset_ioa_job;
8469 add_timer(&ipr_cmd->timer);
8470 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8471
8472 LEAVE;
8473 return IPR_RC_JOB_RETURN;
8474 }
8475
8476 /**
8477 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
8478 * @ipr_cmd: ipr command struct
8479 *
8480 * This function is invoked when an adapter dump has run out
8481 * of processing time.
8482 *
8483 * Return value:
8484 * IPR_RC_JOB_CONTINUE
8485 **/
8486 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
8487 {
8488 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8489
8490 if (ioa_cfg->sdt_state == GET_DUMP)
8491 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8492 else if (ioa_cfg->sdt_state == READ_DUMP)
8493 ioa_cfg->sdt_state = ABORT_DUMP;
8494
8495 ioa_cfg->dump_timeout = 1;
8496 ipr_cmd->job_step = ipr_reset_alert;
8497
8498 return IPR_RC_JOB_CONTINUE;
8499 }
8500
8501 /**
8502 * ipr_unit_check_no_data - Log a unit check/no data error log
8503 * @ioa_cfg: ioa config struct
8504 *
8505 * Logs an error indicating the adapter unit checked, but for some
8506 * reason, we were unable to fetch the unit check buffer.
8507 *
8508 * Return value:
8509 * nothing
8510 **/
8511 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
8512 {
8513 ioa_cfg->errors_logged++;
8514 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
8515 }
8516
8517 /**
8518 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
8519 * @ioa_cfg: ioa config struct
8520 *
8521 * Fetches the unit check buffer from the adapter by clocking the data
8522 * through the mailbox register.
8523 *
8524 * Return value:
8525 * nothing
8526 **/
8527 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
8528 {
8529 unsigned long mailbox;
8530 struct ipr_hostrcb *hostrcb;
8531 struct ipr_uc_sdt sdt;
8532 int rc, length;
8533 u32 ioasc;
8534
8535 mailbox = readl(ioa_cfg->ioa_mailbox);
8536
8537 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
8538 ipr_unit_check_no_data(ioa_cfg);
8539 return;
8540 }
8541
8542 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
8543 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
8544 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
8545
8546 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
8547 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
8548 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
8549 ipr_unit_check_no_data(ioa_cfg);
8550 return;
8551 }
8552
8553 /* Find length of the first sdt entry (UC buffer) */
8554 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
8555 length = be32_to_cpu(sdt.entry[0].end_token);
8556 else
8557 length = (be32_to_cpu(sdt.entry[0].end_token) -
8558 be32_to_cpu(sdt.entry[0].start_token)) &
8559 IPR_FMT2_MBX_ADDR_MASK;
8560
8561 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
8562 struct ipr_hostrcb, queue);
8563 list_del_init(&hostrcb->queue);
8564 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
8565
8566 rc = ipr_get_ldump_data_section(ioa_cfg,
8567 be32_to_cpu(sdt.entry[0].start_token),
8568 (__be32 *)&hostrcb->hcam,
8569 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
8570
8571 if (!rc) {
8572 ipr_handle_log_data(ioa_cfg, hostrcb);
8573 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
8574 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
8575 ioa_cfg->sdt_state == GET_DUMP)
8576 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8577 } else
8578 ipr_unit_check_no_data(ioa_cfg);
8579
8580 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
8581 }
8582
8583 /**
8584 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
8585 * @ipr_cmd: ipr command struct
8586 *
8587 * Description: This function will call to get the unit check buffer.
8588 *
8589 * Return value:
8590 * IPR_RC_JOB_RETURN
8591 **/
8592 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
8593 {
8594 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8595
8596 ENTER;
8597 ioa_cfg->ioa_unit_checked = 0;
8598 ipr_get_unit_check_buffer(ioa_cfg);
8599 ipr_cmd->job_step = ipr_reset_alert;
8600 ipr_reset_start_timer(ipr_cmd, 0);
8601
8602 LEAVE;
8603 return IPR_RC_JOB_RETURN;
8604 }
8605
8606 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd)
8607 {
8608 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8609
8610 ENTER;
8611
8612 if (ioa_cfg->sdt_state != GET_DUMP)
8613 return IPR_RC_JOB_RETURN;
8614
8615 if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left ||
8616 (readl(ioa_cfg->regs.sense_interrupt_reg) &
8617 IPR_PCII_MAILBOX_STABLE)) {
8618
8619 if (!ipr_cmd->u.time_left)
8620 dev_err(&ioa_cfg->pdev->dev,
8621 "Timed out waiting for Mailbox register.\n");
8622
8623 ioa_cfg->sdt_state = READ_DUMP;
8624 ioa_cfg->dump_timeout = 0;
8625 if (ioa_cfg->sis64)
8626 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
8627 else
8628 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
8629 ipr_cmd->job_step = ipr_reset_wait_for_dump;
8630 schedule_work(&ioa_cfg->work_q);
8631
8632 } else {
8633 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8634 ipr_reset_start_timer(ipr_cmd,
8635 IPR_CHECK_FOR_RESET_TIMEOUT);
8636 }
8637
8638 LEAVE;
8639 return IPR_RC_JOB_RETURN;
8640 }
8641
8642 /**
8643 * ipr_reset_restore_cfg_space - Restore PCI config space.
8644 * @ipr_cmd: ipr command struct
8645 *
8646 * Description: This function restores the saved PCI config space of
8647 * the adapter, fails all outstanding ops back to the callers, and
8648 * fetches the dump/unit check if applicable to this reset.
8649 *
8650 * Return value:
8651 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8652 **/
8653 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
8654 {
8655 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8656 u32 int_reg;
8657
8658 ENTER;
8659 ioa_cfg->pdev->state_saved = true;
8660 pci_restore_state(ioa_cfg->pdev);
8661
8662 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
8663 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8664 return IPR_RC_JOB_CONTINUE;
8665 }
8666
8667 ipr_fail_all_ops(ioa_cfg);
8668
8669 if (ioa_cfg->sis64) {
8670 /* Set the adapter to the correct endian mode. */
8671 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8672 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8673 }
8674
8675 if (ioa_cfg->ioa_unit_checked) {
8676 if (ioa_cfg->sis64) {
8677 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
8678 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
8679 return IPR_RC_JOB_RETURN;
8680 } else {
8681 ioa_cfg->ioa_unit_checked = 0;
8682 ipr_get_unit_check_buffer(ioa_cfg);
8683 ipr_cmd->job_step = ipr_reset_alert;
8684 ipr_reset_start_timer(ipr_cmd, 0);
8685 return IPR_RC_JOB_RETURN;
8686 }
8687 }
8688
8689 if (ioa_cfg->in_ioa_bringdown) {
8690 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8691 } else if (ioa_cfg->sdt_state == GET_DUMP) {
8692 ipr_cmd->job_step = ipr_dump_mailbox_wait;
8693 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX;
8694 } else {
8695 ipr_cmd->job_step = ipr_reset_enable_ioa;
8696 }
8697
8698 LEAVE;
8699 return IPR_RC_JOB_CONTINUE;
8700 }
8701
8702 /**
8703 * ipr_reset_bist_done - BIST has completed on the adapter.
8704 * @ipr_cmd: ipr command struct
8705 *
8706 * Description: Unblock config space and resume the reset process.
8707 *
8708 * Return value:
8709 * IPR_RC_JOB_CONTINUE
8710 **/
8711 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
8712 {
8713 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8714
8715 ENTER;
8716 if (ioa_cfg->cfg_locked)
8717 pci_cfg_access_unlock(ioa_cfg->pdev);
8718 ioa_cfg->cfg_locked = 0;
8719 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
8720 LEAVE;
8721 return IPR_RC_JOB_CONTINUE;
8722 }
8723
8724 /**
8725 * ipr_reset_start_bist - Run BIST on the adapter.
8726 * @ipr_cmd: ipr command struct
8727 *
8728 * Description: This function runs BIST on the adapter, then delays 2 seconds.
8729 *
8730 * Return value:
8731 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8732 **/
8733 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
8734 {
8735 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8736 int rc = PCIBIOS_SUCCESSFUL;
8737
8738 ENTER;
8739 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
8740 writel(IPR_UPROCI_SIS64_START_BIST,
8741 ioa_cfg->regs.set_uproc_interrupt_reg32);
8742 else
8743 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
8744
8745 if (rc == PCIBIOS_SUCCESSFUL) {
8746 ipr_cmd->job_step = ipr_reset_bist_done;
8747 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8748 rc = IPR_RC_JOB_RETURN;
8749 } else {
8750 if (ioa_cfg->cfg_locked)
8751 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
8752 ioa_cfg->cfg_locked = 0;
8753 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8754 rc = IPR_RC_JOB_CONTINUE;
8755 }
8756
8757 LEAVE;
8758 return rc;
8759 }
8760
8761 /**
8762 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
8763 * @ipr_cmd: ipr command struct
8764 *
8765 * Description: This clears PCI reset to the adapter and delays two seconds.
8766 *
8767 * Return value:
8768 * IPR_RC_JOB_RETURN
8769 **/
8770 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
8771 {
8772 ENTER;
8773 ipr_cmd->job_step = ipr_reset_bist_done;
8774 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8775 LEAVE;
8776 return IPR_RC_JOB_RETURN;
8777 }
8778
8779 /**
8780 * ipr_reset_reset_work - Pulse a PCIe fundamental reset
8781 * @work: work struct
8782 *
8783 * Description: This pulses warm reset to a slot.
8784 *
8785 **/
8786 static void ipr_reset_reset_work(struct work_struct *work)
8787 {
8788 struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work);
8789 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8790 struct pci_dev *pdev = ioa_cfg->pdev;
8791 unsigned long lock_flags = 0;
8792
8793 ENTER;
8794 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
8795 msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT));
8796 pci_set_pcie_reset_state(pdev, pcie_deassert_reset);
8797
8798 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8799 if (ioa_cfg->reset_cmd == ipr_cmd)
8800 ipr_reset_ioa_job(ipr_cmd);
8801 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8802 LEAVE;
8803 }
8804
8805 /**
8806 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
8807 * @ipr_cmd: ipr command struct
8808 *
8809 * Description: This asserts PCI reset to the adapter.
8810 *
8811 * Return value:
8812 * IPR_RC_JOB_RETURN
8813 **/
8814 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
8815 {
8816 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8817
8818 ENTER;
8819 INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work);
8820 queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work);
8821 ipr_cmd->job_step = ipr_reset_slot_reset_done;
8822 LEAVE;
8823 return IPR_RC_JOB_RETURN;
8824 }
8825
8826 /**
8827 * ipr_reset_block_config_access_wait - Wait for permission to block config access
8828 * @ipr_cmd: ipr command struct
8829 *
8830 * Description: This attempts to block config access to the IOA.
8831 *
8832 * Return value:
8833 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8834 **/
8835 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
8836 {
8837 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8838 int rc = IPR_RC_JOB_CONTINUE;
8839
8840 if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
8841 ioa_cfg->cfg_locked = 1;
8842 ipr_cmd->job_step = ioa_cfg->reset;
8843 } else {
8844 if (ipr_cmd->u.time_left) {
8845 rc = IPR_RC_JOB_RETURN;
8846 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8847 ipr_reset_start_timer(ipr_cmd,
8848 IPR_CHECK_FOR_RESET_TIMEOUT);
8849 } else {
8850 ipr_cmd->job_step = ioa_cfg->reset;
8851 dev_err(&ioa_cfg->pdev->dev,
8852 "Timed out waiting to lock config access. Resetting anyway.\n");
8853 }
8854 }
8855
8856 return rc;
8857 }
8858
8859 /**
8860 * ipr_reset_block_config_access - Block config access to the IOA
8861 * @ipr_cmd: ipr command struct
8862 *
8863 * Description: This attempts to block config access to the IOA
8864 *
8865 * Return value:
8866 * IPR_RC_JOB_CONTINUE
8867 **/
8868 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
8869 {
8870 ipr_cmd->ioa_cfg->cfg_locked = 0;
8871 ipr_cmd->job_step = ipr_reset_block_config_access_wait;
8872 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8873 return IPR_RC_JOB_CONTINUE;
8874 }
8875
8876 /**
8877 * ipr_reset_allowed - Query whether or not IOA can be reset
8878 * @ioa_cfg: ioa config struct
8879 *
8880 * Return value:
8881 * 0 if reset not allowed / non-zero if reset is allowed
8882 **/
8883 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
8884 {
8885 volatile u32 temp_reg;
8886
8887 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8888 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
8889 }
8890
8891 /**
8892 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
8893 * @ipr_cmd: ipr command struct
8894 *
8895 * Description: This function waits for adapter permission to run BIST,
8896 * then runs BIST. If the adapter does not give permission after a
8897 * reasonable time, we will reset the adapter anyway. The impact of
8898 * resetting the adapter without warning the adapter is the risk of
8899 * losing the persistent error log on the adapter. If the adapter is
8900 * reset while it is writing to the flash on the adapter, the flash
8901 * segment will have bad ECC and be zeroed.
8902 *
8903 * Return value:
8904 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8905 **/
8906 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
8907 {
8908 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8909 int rc = IPR_RC_JOB_RETURN;
8910
8911 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
8912 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8913 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8914 } else {
8915 ipr_cmd->job_step = ipr_reset_block_config_access;
8916 rc = IPR_RC_JOB_CONTINUE;
8917 }
8918
8919 return rc;
8920 }
8921
8922 /**
8923 * ipr_reset_alert - Alert the adapter of a pending reset
8924 * @ipr_cmd: ipr command struct
8925 *
8926 * Description: This function alerts the adapter that it will be reset.
8927 * If memory space is not currently enabled, proceed directly
8928 * to running BIST on the adapter. The timer must always be started
8929 * so we guarantee we do not run BIST from ipr_isr.
8930 *
8931 * Return value:
8932 * IPR_RC_JOB_RETURN
8933 **/
8934 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
8935 {
8936 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8937 u16 cmd_reg;
8938 int rc;
8939
8940 ENTER;
8941 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
8942
8943 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
8944 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
8945 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
8946 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
8947 } else {
8948 ipr_cmd->job_step = ipr_reset_block_config_access;
8949 }
8950
8951 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8952 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8953
8954 LEAVE;
8955 return IPR_RC_JOB_RETURN;
8956 }
8957
8958 /**
8959 * ipr_reset_quiesce_done - Complete IOA disconnect
8960 * @ipr_cmd: ipr command struct
8961 *
8962 * Description: Freeze the adapter to complete quiesce processing
8963 *
8964 * Return value:
8965 * IPR_RC_JOB_CONTINUE
8966 **/
8967 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd)
8968 {
8969 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8970
8971 ENTER;
8972 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8973 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8974 LEAVE;
8975 return IPR_RC_JOB_CONTINUE;
8976 }
8977
8978 /**
8979 * ipr_reset_cancel_hcam_done - Check for outstanding commands
8980 * @ipr_cmd: ipr command struct
8981 *
8982 * Description: Ensure nothing is outstanding to the IOA and
8983 * proceed with IOA disconnect. Otherwise reset the IOA.
8984 *
8985 * Return value:
8986 * IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE
8987 **/
8988 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd)
8989 {
8990 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8991 struct ipr_cmnd *loop_cmd;
8992 struct ipr_hrr_queue *hrrq;
8993 int rc = IPR_RC_JOB_CONTINUE;
8994 int count = 0;
8995
8996 ENTER;
8997 ipr_cmd->job_step = ipr_reset_quiesce_done;
8998
8999 for_each_hrrq(hrrq, ioa_cfg) {
9000 spin_lock(&hrrq->_lock);
9001 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) {
9002 count++;
9003 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9004 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9005 rc = IPR_RC_JOB_RETURN;
9006 break;
9007 }
9008 spin_unlock(&hrrq->_lock);
9009
9010 if (count)
9011 break;
9012 }
9013
9014 LEAVE;
9015 return rc;
9016 }
9017
9018 /**
9019 * ipr_reset_cancel_hcam - Cancel outstanding HCAMs
9020 * @ipr_cmd: ipr command struct
9021 *
9022 * Description: Cancel any oustanding HCAMs to the IOA.
9023 *
9024 * Return value:
9025 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
9026 **/
9027 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd)
9028 {
9029 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9030 int rc = IPR_RC_JOB_CONTINUE;
9031 struct ipr_cmd_pkt *cmd_pkt;
9032 struct ipr_cmnd *hcam_cmd;
9033 struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ];
9034
9035 ENTER;
9036 ipr_cmd->job_step = ipr_reset_cancel_hcam_done;
9037
9038 if (!hrrq->ioa_is_dead) {
9039 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) {
9040 list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) {
9041 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC)
9042 continue;
9043
9044 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9045 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
9046 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
9047 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
9048 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST;
9049 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB;
9050 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff;
9051 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff;
9052 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff;
9053 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff;
9054 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff;
9055 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff;
9056 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff;
9057 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff;
9058
9059 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
9060 IPR_CANCEL_TIMEOUT);
9061
9062 rc = IPR_RC_JOB_RETURN;
9063 ipr_cmd->job_step = ipr_reset_cancel_hcam;
9064 break;
9065 }
9066 }
9067 } else
9068 ipr_cmd->job_step = ipr_reset_alert;
9069
9070 LEAVE;
9071 return rc;
9072 }
9073
9074 /**
9075 * ipr_reset_ucode_download_done - Microcode download completion
9076 * @ipr_cmd: ipr command struct
9077 *
9078 * Description: This function unmaps the microcode download buffer.
9079 *
9080 * Return value:
9081 * IPR_RC_JOB_CONTINUE
9082 **/
9083 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
9084 {
9085 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9086 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
9087
9088 dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist,
9089 sglist->num_sg, DMA_TO_DEVICE);
9090
9091 ipr_cmd->job_step = ipr_reset_alert;
9092 return IPR_RC_JOB_CONTINUE;
9093 }
9094
9095 /**
9096 * ipr_reset_ucode_download - Download microcode to the adapter
9097 * @ipr_cmd: ipr command struct
9098 *
9099 * Description: This function checks to see if it there is microcode
9100 * to download to the adapter. If there is, a download is performed.
9101 *
9102 * Return value:
9103 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
9104 **/
9105 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
9106 {
9107 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9108 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
9109
9110 ENTER;
9111 ipr_cmd->job_step = ipr_reset_alert;
9112
9113 if (!sglist)
9114 return IPR_RC_JOB_CONTINUE;
9115
9116 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9117 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
9118 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
9119 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
9120 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
9121 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
9122 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
9123
9124 if (ioa_cfg->sis64)
9125 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
9126 else
9127 ipr_build_ucode_ioadl(ipr_cmd, sglist);
9128 ipr_cmd->job_step = ipr_reset_ucode_download_done;
9129
9130 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
9131 IPR_WRITE_BUFFER_TIMEOUT);
9132
9133 LEAVE;
9134 return IPR_RC_JOB_RETURN;
9135 }
9136
9137 /**
9138 * ipr_reset_shutdown_ioa - Shutdown the adapter
9139 * @ipr_cmd: ipr command struct
9140 *
9141 * Description: This function issues an adapter shutdown of the
9142 * specified type to the specified adapter as part of the
9143 * adapter reset job.
9144 *
9145 * Return value:
9146 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
9147 **/
9148 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
9149 {
9150 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9151 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
9152 unsigned long timeout;
9153 int rc = IPR_RC_JOB_CONTINUE;
9154
9155 ENTER;
9156 if (shutdown_type == IPR_SHUTDOWN_QUIESCE)
9157 ipr_cmd->job_step = ipr_reset_cancel_hcam;
9158 else if (shutdown_type != IPR_SHUTDOWN_NONE &&
9159 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
9160 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9161 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
9162 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
9163 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
9164
9165 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
9166 timeout = IPR_SHUTDOWN_TIMEOUT;
9167 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
9168 timeout = IPR_INTERNAL_TIMEOUT;
9169 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
9170 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
9171 else
9172 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
9173
9174 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
9175
9176 rc = IPR_RC_JOB_RETURN;
9177 ipr_cmd->job_step = ipr_reset_ucode_download;
9178 } else
9179 ipr_cmd->job_step = ipr_reset_alert;
9180
9181 LEAVE;
9182 return rc;
9183 }
9184
9185 /**
9186 * ipr_reset_ioa_job - Adapter reset job
9187 * @ipr_cmd: ipr command struct
9188 *
9189 * Description: This function is the job router for the adapter reset job.
9190 *
9191 * Return value:
9192 * none
9193 **/
9194 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
9195 {
9196 u32 rc, ioasc;
9197 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9198
9199 do {
9200 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
9201
9202 if (ioa_cfg->reset_cmd != ipr_cmd) {
9203 /*
9204 * We are doing nested adapter resets and this is
9205 * not the current reset job.
9206 */
9207 list_add_tail(&ipr_cmd->queue,
9208 &ipr_cmd->hrrq->hrrq_free_q);
9209 return;
9210 }
9211
9212 if (IPR_IOASC_SENSE_KEY(ioasc)) {
9213 rc = ipr_cmd->job_step_failed(ipr_cmd);
9214 if (rc == IPR_RC_JOB_RETURN)
9215 return;
9216 }
9217
9218 ipr_reinit_ipr_cmnd(ipr_cmd);
9219 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
9220 rc = ipr_cmd->job_step(ipr_cmd);
9221 } while (rc == IPR_RC_JOB_CONTINUE);
9222 }
9223
9224 /**
9225 * _ipr_initiate_ioa_reset - Initiate an adapter reset
9226 * @ioa_cfg: ioa config struct
9227 * @job_step: first job step of reset job
9228 * @shutdown_type: shutdown type
9229 *
9230 * Description: This function will initiate the reset of the given adapter
9231 * starting at the selected job step.
9232 * If the caller needs to wait on the completion of the reset,
9233 * the caller must sleep on the reset_wait_q.
9234 *
9235 * Return value:
9236 * none
9237 **/
9238 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9239 int (*job_step) (struct ipr_cmnd *),
9240 enum ipr_shutdown_type shutdown_type)
9241 {
9242 struct ipr_cmnd *ipr_cmd;
9243 int i;
9244
9245 ioa_cfg->in_reset_reload = 1;
9246 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9247 spin_lock(&ioa_cfg->hrrq[i]._lock);
9248 ioa_cfg->hrrq[i].allow_cmds = 0;
9249 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9250 }
9251 wmb();
9252 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa)
9253 scsi_block_requests(ioa_cfg->host);
9254
9255 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9256 ioa_cfg->reset_cmd = ipr_cmd;
9257 ipr_cmd->job_step = job_step;
9258 ipr_cmd->u.shutdown_type = shutdown_type;
9259
9260 ipr_reset_ioa_job(ipr_cmd);
9261 }
9262
9263 /**
9264 * ipr_initiate_ioa_reset - Initiate an adapter reset
9265 * @ioa_cfg: ioa config struct
9266 * @shutdown_type: shutdown type
9267 *
9268 * Description: This function will initiate the reset of the given adapter.
9269 * If the caller needs to wait on the completion of the reset,
9270 * the caller must sleep on the reset_wait_q.
9271 *
9272 * Return value:
9273 * none
9274 **/
9275 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9276 enum ipr_shutdown_type shutdown_type)
9277 {
9278 int i;
9279
9280 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
9281 return;
9282
9283 if (ioa_cfg->in_reset_reload) {
9284 if (ioa_cfg->sdt_state == GET_DUMP)
9285 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
9286 else if (ioa_cfg->sdt_state == READ_DUMP)
9287 ioa_cfg->sdt_state = ABORT_DUMP;
9288 }
9289
9290 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
9291 dev_err(&ioa_cfg->pdev->dev,
9292 "IOA taken offline - error recovery failed\n");
9293
9294 ioa_cfg->reset_retries = 0;
9295 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9296 spin_lock(&ioa_cfg->hrrq[i]._lock);
9297 ioa_cfg->hrrq[i].ioa_is_dead = 1;
9298 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9299 }
9300 wmb();
9301
9302 if (ioa_cfg->in_ioa_bringdown) {
9303 ioa_cfg->reset_cmd = NULL;
9304 ioa_cfg->in_reset_reload = 0;
9305 ipr_fail_all_ops(ioa_cfg);
9306 wake_up_all(&ioa_cfg->reset_wait_q);
9307
9308 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
9309 spin_unlock_irq(ioa_cfg->host->host_lock);
9310 scsi_unblock_requests(ioa_cfg->host);
9311 spin_lock_irq(ioa_cfg->host->host_lock);
9312 }
9313 return;
9314 } else {
9315 ioa_cfg->in_ioa_bringdown = 1;
9316 shutdown_type = IPR_SHUTDOWN_NONE;
9317 }
9318 }
9319
9320 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
9321 shutdown_type);
9322 }
9323
9324 /**
9325 * ipr_reset_freeze - Hold off all I/O activity
9326 * @ipr_cmd: ipr command struct
9327 *
9328 * Description: If the PCI slot is frozen, hold off all I/O
9329 * activity; then, as soon as the slot is available again,
9330 * initiate an adapter reset.
9331 */
9332 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
9333 {
9334 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9335 int i;
9336
9337 /* Disallow new interrupts, avoid loop */
9338 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9339 spin_lock(&ioa_cfg->hrrq[i]._lock);
9340 ioa_cfg->hrrq[i].allow_interrupts = 0;
9341 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9342 }
9343 wmb();
9344 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
9345 ipr_cmd->done = ipr_reset_ioa_job;
9346 return IPR_RC_JOB_RETURN;
9347 }
9348
9349 /**
9350 * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled
9351 * @pdev: PCI device struct
9352 *
9353 * Description: This routine is called to tell us that the MMIO
9354 * access to the IOA has been restored
9355 */
9356 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev)
9357 {
9358 unsigned long flags = 0;
9359 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9360
9361 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9362 if (!ioa_cfg->probe_done)
9363 pci_save_state(pdev);
9364 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9365 return PCI_ERS_RESULT_NEED_RESET;
9366 }
9367
9368 /**
9369 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
9370 * @pdev: PCI device struct
9371 *
9372 * Description: This routine is called to tell us that the PCI bus
9373 * is down. Can't do anything here, except put the device driver
9374 * into a holding pattern, waiting for the PCI bus to come back.
9375 */
9376 static void ipr_pci_frozen(struct pci_dev *pdev)
9377 {
9378 unsigned long flags = 0;
9379 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9380
9381 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9382 if (ioa_cfg->probe_done)
9383 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
9384 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9385 }
9386
9387 /**
9388 * ipr_pci_slot_reset - Called when PCI slot has been reset.
9389 * @pdev: PCI device struct
9390 *
9391 * Description: This routine is called by the pci error recovery
9392 * code after the PCI slot has been reset, just before we
9393 * should resume normal operations.
9394 */
9395 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
9396 {
9397 unsigned long flags = 0;
9398 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9399
9400 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9401 if (ioa_cfg->probe_done) {
9402 if (ioa_cfg->needs_warm_reset)
9403 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9404 else
9405 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
9406 IPR_SHUTDOWN_NONE);
9407 } else
9408 wake_up_all(&ioa_cfg->eeh_wait_q);
9409 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9410 return PCI_ERS_RESULT_RECOVERED;
9411 }
9412
9413 /**
9414 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
9415 * @pdev: PCI device struct
9416 *
9417 * Description: This routine is called when the PCI bus has
9418 * permanently failed.
9419 */
9420 static void ipr_pci_perm_failure(struct pci_dev *pdev)
9421 {
9422 unsigned long flags = 0;
9423 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9424 int i;
9425
9426 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9427 if (ioa_cfg->probe_done) {
9428 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
9429 ioa_cfg->sdt_state = ABORT_DUMP;
9430 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1;
9431 ioa_cfg->in_ioa_bringdown = 1;
9432 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9433 spin_lock(&ioa_cfg->hrrq[i]._lock);
9434 ioa_cfg->hrrq[i].allow_cmds = 0;
9435 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9436 }
9437 wmb();
9438 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9439 } else
9440 wake_up_all(&ioa_cfg->eeh_wait_q);
9441 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9442 }
9443
9444 /**
9445 * ipr_pci_error_detected - Called when a PCI error is detected.
9446 * @pdev: PCI device struct
9447 * @state: PCI channel state
9448 *
9449 * Description: Called when a PCI error is detected.
9450 *
9451 * Return value:
9452 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
9453 */
9454 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
9455 pci_channel_state_t state)
9456 {
9457 switch (state) {
9458 case pci_channel_io_frozen:
9459 ipr_pci_frozen(pdev);
9460 return PCI_ERS_RESULT_CAN_RECOVER;
9461 case pci_channel_io_perm_failure:
9462 ipr_pci_perm_failure(pdev);
9463 return PCI_ERS_RESULT_DISCONNECT;
9464 break;
9465 default:
9466 break;
9467 }
9468 return PCI_ERS_RESULT_NEED_RESET;
9469 }
9470
9471 /**
9472 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
9473 * @ioa_cfg: ioa cfg struct
9474 *
9475 * Description: This is the second phase of adapter initialization
9476 * This function takes care of initilizing the adapter to the point
9477 * where it can accept new commands.
9478
9479 * Return value:
9480 * 0 on success / -EIO on failure
9481 **/
9482 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
9483 {
9484 int rc = 0;
9485 unsigned long host_lock_flags = 0;
9486
9487 ENTER;
9488 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9489 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
9490 ioa_cfg->probe_done = 1;
9491 if (ioa_cfg->needs_hard_reset) {
9492 ioa_cfg->needs_hard_reset = 0;
9493 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9494 } else
9495 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
9496 IPR_SHUTDOWN_NONE);
9497 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9498
9499 LEAVE;
9500 return rc;
9501 }
9502
9503 /**
9504 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
9505 * @ioa_cfg: ioa config struct
9506 *
9507 * Return value:
9508 * none
9509 **/
9510 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9511 {
9512 int i;
9513
9514 if (ioa_cfg->ipr_cmnd_list) {
9515 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9516 if (ioa_cfg->ipr_cmnd_list[i])
9517 dma_pool_free(ioa_cfg->ipr_cmd_pool,
9518 ioa_cfg->ipr_cmnd_list[i],
9519 ioa_cfg->ipr_cmnd_list_dma[i]);
9520
9521 ioa_cfg->ipr_cmnd_list[i] = NULL;
9522 }
9523 }
9524
9525 if (ioa_cfg->ipr_cmd_pool)
9526 dma_pool_destroy(ioa_cfg->ipr_cmd_pool);
9527
9528 kfree(ioa_cfg->ipr_cmnd_list);
9529 kfree(ioa_cfg->ipr_cmnd_list_dma);
9530 ioa_cfg->ipr_cmnd_list = NULL;
9531 ioa_cfg->ipr_cmnd_list_dma = NULL;
9532 ioa_cfg->ipr_cmd_pool = NULL;
9533 }
9534
9535 /**
9536 * ipr_free_mem - Frees memory allocated for an adapter
9537 * @ioa_cfg: ioa cfg struct
9538 *
9539 * Return value:
9540 * nothing
9541 **/
9542 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
9543 {
9544 int i;
9545
9546 kfree(ioa_cfg->res_entries);
9547 dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs),
9548 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9549 ipr_free_cmd_blks(ioa_cfg);
9550
9551 for (i = 0; i < ioa_cfg->hrrq_num; i++)
9552 dma_free_coherent(&ioa_cfg->pdev->dev,
9553 sizeof(u32) * ioa_cfg->hrrq[i].size,
9554 ioa_cfg->hrrq[i].host_rrq,
9555 ioa_cfg->hrrq[i].host_rrq_dma);
9556
9557 dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size,
9558 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9559
9560 for (i = 0; i < IPR_MAX_HCAMS; i++) {
9561 dma_free_coherent(&ioa_cfg->pdev->dev,
9562 sizeof(struct ipr_hostrcb),
9563 ioa_cfg->hostrcb[i],
9564 ioa_cfg->hostrcb_dma[i]);
9565 }
9566
9567 ipr_free_dump(ioa_cfg);
9568 kfree(ioa_cfg->trace);
9569 }
9570
9571 /**
9572 * ipr_free_irqs - Free all allocated IRQs for the adapter.
9573 * @ioa_cfg: ipr cfg struct
9574 *
9575 * This function frees all allocated IRQs for the
9576 * specified adapter.
9577 *
9578 * Return value:
9579 * none
9580 **/
9581 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg)
9582 {
9583 struct pci_dev *pdev = ioa_cfg->pdev;
9584 int i;
9585
9586 for (i = 0; i < ioa_cfg->nvectors; i++)
9587 free_irq(pci_irq_vector(pdev, i), &ioa_cfg->hrrq[i]);
9588 pci_free_irq_vectors(pdev);
9589 }
9590
9591 /**
9592 * ipr_free_all_resources - Free all allocated resources for an adapter.
9593 * @ipr_cmd: ipr command struct
9594 *
9595 * This function frees all allocated resources for the
9596 * specified adapter.
9597 *
9598 * Return value:
9599 * none
9600 **/
9601 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
9602 {
9603 struct pci_dev *pdev = ioa_cfg->pdev;
9604
9605 ENTER;
9606 ipr_free_irqs(ioa_cfg);
9607 if (ioa_cfg->reset_work_q)
9608 destroy_workqueue(ioa_cfg->reset_work_q);
9609 iounmap(ioa_cfg->hdw_dma_regs);
9610 pci_release_regions(pdev);
9611 ipr_free_mem(ioa_cfg);
9612 scsi_host_put(ioa_cfg->host);
9613 pci_disable_device(pdev);
9614 LEAVE;
9615 }
9616
9617 /**
9618 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
9619 * @ioa_cfg: ioa config struct
9620 *
9621 * Return value:
9622 * 0 on success / -ENOMEM on allocation failure
9623 **/
9624 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9625 {
9626 struct ipr_cmnd *ipr_cmd;
9627 struct ipr_ioarcb *ioarcb;
9628 dma_addr_t dma_addr;
9629 int i, entries_each_hrrq, hrrq_id = 0;
9630
9631 ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev,
9632 sizeof(struct ipr_cmnd), 512, 0);
9633
9634 if (!ioa_cfg->ipr_cmd_pool)
9635 return -ENOMEM;
9636
9637 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL);
9638 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL);
9639
9640 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) {
9641 ipr_free_cmd_blks(ioa_cfg);
9642 return -ENOMEM;
9643 }
9644
9645 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9646 if (ioa_cfg->hrrq_num > 1) {
9647 if (i == 0) {
9648 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS;
9649 ioa_cfg->hrrq[i].min_cmd_id = 0;
9650 ioa_cfg->hrrq[i].max_cmd_id =
9651 (entries_each_hrrq - 1);
9652 } else {
9653 entries_each_hrrq =
9654 IPR_NUM_BASE_CMD_BLKS/
9655 (ioa_cfg->hrrq_num - 1);
9656 ioa_cfg->hrrq[i].min_cmd_id =
9657 IPR_NUM_INTERNAL_CMD_BLKS +
9658 (i - 1) * entries_each_hrrq;
9659 ioa_cfg->hrrq[i].max_cmd_id =
9660 (IPR_NUM_INTERNAL_CMD_BLKS +
9661 i * entries_each_hrrq - 1);
9662 }
9663 } else {
9664 entries_each_hrrq = IPR_NUM_CMD_BLKS;
9665 ioa_cfg->hrrq[i].min_cmd_id = 0;
9666 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1);
9667 }
9668 ioa_cfg->hrrq[i].size = entries_each_hrrq;
9669 }
9670
9671 BUG_ON(ioa_cfg->hrrq_num == 0);
9672
9673 i = IPR_NUM_CMD_BLKS -
9674 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1;
9675 if (i > 0) {
9676 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i;
9677 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i;
9678 }
9679
9680 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9681 ipr_cmd = dma_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
9682
9683 if (!ipr_cmd) {
9684 ipr_free_cmd_blks(ioa_cfg);
9685 return -ENOMEM;
9686 }
9687
9688 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
9689 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
9690 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
9691
9692 ioarcb = &ipr_cmd->ioarcb;
9693 ipr_cmd->dma_addr = dma_addr;
9694 if (ioa_cfg->sis64)
9695 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
9696 else
9697 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
9698
9699 ioarcb->host_response_handle = cpu_to_be32(i << 2);
9700 if (ioa_cfg->sis64) {
9701 ioarcb->u.sis64_addr_data.data_ioadl_addr =
9702 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
9703 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
9704 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
9705 } else {
9706 ioarcb->write_ioadl_addr =
9707 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
9708 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
9709 ioarcb->ioasa_host_pci_addr =
9710 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
9711 }
9712 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
9713 ipr_cmd->cmd_index = i;
9714 ipr_cmd->ioa_cfg = ioa_cfg;
9715 ipr_cmd->sense_buffer_dma = dma_addr +
9716 offsetof(struct ipr_cmnd, sense_buffer);
9717
9718 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id;
9719 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id];
9720 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9721 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id)
9722 hrrq_id++;
9723 }
9724
9725 return 0;
9726 }
9727
9728 /**
9729 * ipr_alloc_mem - Allocate memory for an adapter
9730 * @ioa_cfg: ioa config struct
9731 *
9732 * Return value:
9733 * 0 on success / non-zero for error
9734 **/
9735 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
9736 {
9737 struct pci_dev *pdev = ioa_cfg->pdev;
9738 int i, rc = -ENOMEM;
9739
9740 ENTER;
9741 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
9742 ioa_cfg->max_devs_supported, GFP_KERNEL);
9743
9744 if (!ioa_cfg->res_entries)
9745 goto out;
9746
9747 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
9748 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
9749 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
9750 }
9751
9752 ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev,
9753 sizeof(struct ipr_misc_cbs),
9754 &ioa_cfg->vpd_cbs_dma,
9755 GFP_KERNEL);
9756
9757 if (!ioa_cfg->vpd_cbs)
9758 goto out_free_res_entries;
9759
9760 if (ipr_alloc_cmd_blks(ioa_cfg))
9761 goto out_free_vpd_cbs;
9762
9763 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9764 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev,
9765 sizeof(u32) * ioa_cfg->hrrq[i].size,
9766 &ioa_cfg->hrrq[i].host_rrq_dma,
9767 GFP_KERNEL);
9768
9769 if (!ioa_cfg->hrrq[i].host_rrq) {
9770 while (--i > 0)
9771 dma_free_coherent(&pdev->dev,
9772 sizeof(u32) * ioa_cfg->hrrq[i].size,
9773 ioa_cfg->hrrq[i].host_rrq,
9774 ioa_cfg->hrrq[i].host_rrq_dma);
9775 goto out_ipr_free_cmd_blocks;
9776 }
9777 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg;
9778 }
9779
9780 ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev,
9781 ioa_cfg->cfg_table_size,
9782 &ioa_cfg->cfg_table_dma,
9783 GFP_KERNEL);
9784
9785 if (!ioa_cfg->u.cfg_table)
9786 goto out_free_host_rrq;
9787
9788 for (i = 0; i < IPR_MAX_HCAMS; i++) {
9789 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev,
9790 sizeof(struct ipr_hostrcb),
9791 &ioa_cfg->hostrcb_dma[i],
9792 GFP_KERNEL);
9793
9794 if (!ioa_cfg->hostrcb[i])
9795 goto out_free_hostrcb_dma;
9796
9797 ioa_cfg->hostrcb[i]->hostrcb_dma =
9798 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
9799 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
9800 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
9801 }
9802
9803 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
9804 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
9805
9806 if (!ioa_cfg->trace)
9807 goto out_free_hostrcb_dma;
9808
9809 rc = 0;
9810 out:
9811 LEAVE;
9812 return rc;
9813
9814 out_free_hostrcb_dma:
9815 while (i-- > 0) {
9816 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb),
9817 ioa_cfg->hostrcb[i],
9818 ioa_cfg->hostrcb_dma[i]);
9819 }
9820 dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size,
9821 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9822 out_free_host_rrq:
9823 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9824 dma_free_coherent(&pdev->dev,
9825 sizeof(u32) * ioa_cfg->hrrq[i].size,
9826 ioa_cfg->hrrq[i].host_rrq,
9827 ioa_cfg->hrrq[i].host_rrq_dma);
9828 }
9829 out_ipr_free_cmd_blocks:
9830 ipr_free_cmd_blks(ioa_cfg);
9831 out_free_vpd_cbs:
9832 dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs),
9833 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9834 out_free_res_entries:
9835 kfree(ioa_cfg->res_entries);
9836 goto out;
9837 }
9838
9839 /**
9840 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
9841 * @ioa_cfg: ioa config struct
9842 *
9843 * Return value:
9844 * none
9845 **/
9846 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
9847 {
9848 int i;
9849
9850 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
9851 ioa_cfg->bus_attr[i].bus = i;
9852 ioa_cfg->bus_attr[i].qas_enabled = 0;
9853 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
9854 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
9855 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
9856 else
9857 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
9858 }
9859 }
9860
9861 /**
9862 * ipr_init_regs - Initialize IOA registers
9863 * @ioa_cfg: ioa config struct
9864 *
9865 * Return value:
9866 * none
9867 **/
9868 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg)
9869 {
9870 const struct ipr_interrupt_offsets *p;
9871 struct ipr_interrupts *t;
9872 void __iomem *base;
9873
9874 p = &ioa_cfg->chip_cfg->regs;
9875 t = &ioa_cfg->regs;
9876 base = ioa_cfg->hdw_dma_regs;
9877
9878 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
9879 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
9880 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
9881 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
9882 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
9883 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
9884 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
9885 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
9886 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
9887 t->ioarrin_reg = base + p->ioarrin_reg;
9888 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
9889 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
9890 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
9891 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
9892 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
9893 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
9894
9895 if (ioa_cfg->sis64) {
9896 t->init_feedback_reg = base + p->init_feedback_reg;
9897 t->dump_addr_reg = base + p->dump_addr_reg;
9898 t->dump_data_reg = base + p->dump_data_reg;
9899 t->endian_swap_reg = base + p->endian_swap_reg;
9900 }
9901 }
9902
9903 /**
9904 * ipr_init_ioa_cfg - Initialize IOA config struct
9905 * @ioa_cfg: ioa config struct
9906 * @host: scsi host struct
9907 * @pdev: PCI dev struct
9908 *
9909 * Return value:
9910 * none
9911 **/
9912 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
9913 struct Scsi_Host *host, struct pci_dev *pdev)
9914 {
9915 int i;
9916
9917 ioa_cfg->host = host;
9918 ioa_cfg->pdev = pdev;
9919 ioa_cfg->log_level = ipr_log_level;
9920 ioa_cfg->doorbell = IPR_DOORBELL;
9921 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
9922 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
9923 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
9924 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
9925 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
9926 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
9927
9928 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
9929 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
9930 INIT_LIST_HEAD(&ioa_cfg->hostrcb_report_q);
9931 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
9932 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9933 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
9934 init_waitqueue_head(&ioa_cfg->reset_wait_q);
9935 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9936 init_waitqueue_head(&ioa_cfg->eeh_wait_q);
9937 ioa_cfg->sdt_state = INACTIVE;
9938
9939 ipr_initialize_bus_attr(ioa_cfg);
9940 ioa_cfg->max_devs_supported = ipr_max_devs;
9941
9942 if (ioa_cfg->sis64) {
9943 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
9944 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
9945 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
9946 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
9947 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
9948 + ((sizeof(struct ipr_config_table_entry64)
9949 * ioa_cfg->max_devs_supported)));
9950 } else {
9951 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
9952 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
9953 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
9954 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
9955 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
9956 + ((sizeof(struct ipr_config_table_entry)
9957 * ioa_cfg->max_devs_supported)));
9958 }
9959
9960 host->max_channel = IPR_VSET_BUS;
9961 host->unique_id = host->host_no;
9962 host->max_cmd_len = IPR_MAX_CDB_LEN;
9963 host->can_queue = ioa_cfg->max_cmds;
9964 pci_set_drvdata(pdev, ioa_cfg);
9965
9966 for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) {
9967 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q);
9968 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q);
9969 spin_lock_init(&ioa_cfg->hrrq[i]._lock);
9970 if (i == 0)
9971 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock;
9972 else
9973 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock;
9974 }
9975 }
9976
9977 /**
9978 * ipr_get_chip_info - Find adapter chip information
9979 * @dev_id: PCI device id struct
9980 *
9981 * Return value:
9982 * ptr to chip information on success / NULL on failure
9983 **/
9984 static const struct ipr_chip_t *
9985 ipr_get_chip_info(const struct pci_device_id *dev_id)
9986 {
9987 int i;
9988
9989 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
9990 if (ipr_chip[i].vendor == dev_id->vendor &&
9991 ipr_chip[i].device == dev_id->device)
9992 return &ipr_chip[i];
9993 return NULL;
9994 }
9995
9996 /**
9997 * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete
9998 * during probe time
9999 * @ioa_cfg: ioa config struct
10000 *
10001 * Return value:
10002 * None
10003 **/
10004 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg)
10005 {
10006 struct pci_dev *pdev = ioa_cfg->pdev;
10007
10008 if (pci_channel_offline(pdev)) {
10009 wait_event_timeout(ioa_cfg->eeh_wait_q,
10010 !pci_channel_offline(pdev),
10011 IPR_PCI_ERROR_RECOVERY_TIMEOUT);
10012 pci_restore_state(pdev);
10013 }
10014 }
10015
10016 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg)
10017 {
10018 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1;
10019
10020 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) {
10021 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n,
10022 "host%d-%d", ioa_cfg->host->host_no, vec_idx);
10023 ioa_cfg->vectors_info[vec_idx].
10024 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0;
10025 }
10026 }
10027
10028 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg,
10029 struct pci_dev *pdev)
10030 {
10031 int i, rc;
10032
10033 for (i = 1; i < ioa_cfg->nvectors; i++) {
10034 rc = request_irq(pci_irq_vector(pdev, i),
10035 ipr_isr_mhrrq,
10036 0,
10037 ioa_cfg->vectors_info[i].desc,
10038 &ioa_cfg->hrrq[i]);
10039 if (rc) {
10040 while (--i >= 0)
10041 free_irq(pci_irq_vector(pdev, i),
10042 &ioa_cfg->hrrq[i]);
10043 return rc;
10044 }
10045 }
10046 return 0;
10047 }
10048
10049 /**
10050 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
10051 * @pdev: PCI device struct
10052 *
10053 * Description: Simply set the msi_received flag to 1 indicating that
10054 * Message Signaled Interrupts are supported.
10055 *
10056 * Return value:
10057 * 0 on success / non-zero on failure
10058 **/
10059 static irqreturn_t ipr_test_intr(int irq, void *devp)
10060 {
10061 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
10062 unsigned long lock_flags = 0;
10063 irqreturn_t rc = IRQ_HANDLED;
10064
10065 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq);
10066 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10067
10068 ioa_cfg->msi_received = 1;
10069 wake_up(&ioa_cfg->msi_wait_q);
10070
10071 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10072 return rc;
10073 }
10074
10075 /**
10076 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
10077 * @pdev: PCI device struct
10078 *
10079 * Description: This routine sets up and initiates a test interrupt to determine
10080 * if the interrupt is received via the ipr_test_intr() service routine.
10081 * If the tests fails, the driver will fall back to LSI.
10082 *
10083 * Return value:
10084 * 0 on success / non-zero on failure
10085 **/
10086 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev)
10087 {
10088 int rc;
10089 volatile u32 int_reg;
10090 unsigned long lock_flags = 0;
10091 int irq = pci_irq_vector(pdev, 0);
10092
10093 ENTER;
10094
10095 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10096 init_waitqueue_head(&ioa_cfg->msi_wait_q);
10097 ioa_cfg->msi_received = 0;
10098 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10099 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
10100 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
10101 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10102
10103 rc = request_irq(irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
10104 if (rc) {
10105 dev_err(&pdev->dev, "Can not assign irq %d\n", irq);
10106 return rc;
10107 } else if (ipr_debug)
10108 dev_info(&pdev->dev, "IRQ assigned: %d\n", irq);
10109
10110 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
10111 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
10112 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
10113 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10114 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10115
10116 if (!ioa_cfg->msi_received) {
10117 /* MSI test failed */
10118 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
10119 rc = -EOPNOTSUPP;
10120 } else if (ipr_debug)
10121 dev_info(&pdev->dev, "MSI test succeeded.\n");
10122
10123 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10124
10125 free_irq(irq, ioa_cfg);
10126
10127 LEAVE;
10128
10129 return rc;
10130 }
10131
10132 /* ipr_probe_ioa - Allocates memory and does first stage of initialization
10133 * @pdev: PCI device struct
10134 * @dev_id: PCI device id struct
10135 *
10136 * Return value:
10137 * 0 on success / non-zero on failure
10138 **/
10139 static int ipr_probe_ioa(struct pci_dev *pdev,
10140 const struct pci_device_id *dev_id)
10141 {
10142 struct ipr_ioa_cfg *ioa_cfg;
10143 struct Scsi_Host *host;
10144 unsigned long ipr_regs_pci;
10145 void __iomem *ipr_regs;
10146 int rc = PCIBIOS_SUCCESSFUL;
10147 volatile u32 mask, uproc, interrupts;
10148 unsigned long lock_flags, driver_lock_flags;
10149 unsigned int irq_flag;
10150
10151 ENTER;
10152
10153 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
10154 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
10155
10156 if (!host) {
10157 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
10158 rc = -ENOMEM;
10159 goto out;
10160 }
10161
10162 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
10163 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
10164 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops);
10165
10166 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
10167
10168 if (!ioa_cfg->ipr_chip) {
10169 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
10170 dev_id->vendor, dev_id->device);
10171 goto out_scsi_host_put;
10172 }
10173
10174 /* set SIS 32 or SIS 64 */
10175 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
10176 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
10177 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr;
10178 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds;
10179
10180 if (ipr_transop_timeout)
10181 ioa_cfg->transop_timeout = ipr_transop_timeout;
10182 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
10183 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
10184 else
10185 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
10186
10187 ioa_cfg->revid = pdev->revision;
10188
10189 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
10190
10191 ipr_regs_pci = pci_resource_start(pdev, 0);
10192
10193 rc = pci_request_regions(pdev, IPR_NAME);
10194 if (rc < 0) {
10195 dev_err(&pdev->dev,
10196 "Couldn't register memory range of registers\n");
10197 goto out_scsi_host_put;
10198 }
10199
10200 rc = pci_enable_device(pdev);
10201
10202 if (rc || pci_channel_offline(pdev)) {
10203 if (pci_channel_offline(pdev)) {
10204 ipr_wait_for_pci_err_recovery(ioa_cfg);
10205 rc = pci_enable_device(pdev);
10206 }
10207
10208 if (rc) {
10209 dev_err(&pdev->dev, "Cannot enable adapter\n");
10210 ipr_wait_for_pci_err_recovery(ioa_cfg);
10211 goto out_release_regions;
10212 }
10213 }
10214
10215 ipr_regs = pci_ioremap_bar(pdev, 0);
10216
10217 if (!ipr_regs) {
10218 dev_err(&pdev->dev,
10219 "Couldn't map memory range of registers\n");
10220 rc = -ENOMEM;
10221 goto out_disable;
10222 }
10223
10224 ioa_cfg->hdw_dma_regs = ipr_regs;
10225 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
10226 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
10227
10228 ipr_init_regs(ioa_cfg);
10229
10230 if (ioa_cfg->sis64) {
10231 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10232 if (rc < 0) {
10233 dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n");
10234 rc = dma_set_mask_and_coherent(&pdev->dev,
10235 DMA_BIT_MASK(32));
10236 }
10237 } else
10238 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10239
10240 if (rc < 0) {
10241 dev_err(&pdev->dev, "Failed to set DMA mask\n");
10242 goto cleanup_nomem;
10243 }
10244
10245 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
10246 ioa_cfg->chip_cfg->cache_line_size);
10247
10248 if (rc != PCIBIOS_SUCCESSFUL) {
10249 dev_err(&pdev->dev, "Write of cache line size failed\n");
10250 ipr_wait_for_pci_err_recovery(ioa_cfg);
10251 rc = -EIO;
10252 goto cleanup_nomem;
10253 }
10254
10255 /* Issue MMIO read to ensure card is not in EEH */
10256 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
10257 ipr_wait_for_pci_err_recovery(ioa_cfg);
10258
10259 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) {
10260 dev_err(&pdev->dev, "The max number of MSIX is %d\n",
10261 IPR_MAX_MSIX_VECTORS);
10262 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS;
10263 }
10264
10265 irq_flag = PCI_IRQ_LEGACY;
10266 if (ioa_cfg->ipr_chip->has_msi)
10267 irq_flag |= PCI_IRQ_MSI | PCI_IRQ_MSIX;
10268 rc = pci_alloc_irq_vectors(pdev, 1, ipr_number_of_msix, irq_flag);
10269 if (rc < 0) {
10270 ipr_wait_for_pci_err_recovery(ioa_cfg);
10271 goto cleanup_nomem;
10272 }
10273 ioa_cfg->nvectors = rc;
10274
10275 if (!pdev->msi_enabled && !pdev->msix_enabled)
10276 ioa_cfg->clear_isr = 1;
10277
10278 pci_set_master(pdev);
10279
10280 if (pci_channel_offline(pdev)) {
10281 ipr_wait_for_pci_err_recovery(ioa_cfg);
10282 pci_set_master(pdev);
10283 if (pci_channel_offline(pdev)) {
10284 rc = -EIO;
10285 goto out_msi_disable;
10286 }
10287 }
10288
10289 if (pdev->msi_enabled || pdev->msix_enabled) {
10290 rc = ipr_test_msi(ioa_cfg, pdev);
10291 switch (rc) {
10292 case 0:
10293 dev_info(&pdev->dev,
10294 "Request for %d MSI%ss succeeded.", ioa_cfg->nvectors,
10295 pdev->msix_enabled ? "-X" : "");
10296 break;
10297 case -EOPNOTSUPP:
10298 ipr_wait_for_pci_err_recovery(ioa_cfg);
10299 pci_free_irq_vectors(pdev);
10300
10301 ioa_cfg->nvectors = 1;
10302 ioa_cfg->clear_isr = 1;
10303 break;
10304 default:
10305 goto out_msi_disable;
10306 }
10307 }
10308
10309 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors,
10310 (unsigned int)num_online_cpus(),
10311 (unsigned int)IPR_MAX_HRRQ_NUM);
10312
10313 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
10314 goto out_msi_disable;
10315
10316 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
10317 goto out_msi_disable;
10318
10319 rc = ipr_alloc_mem(ioa_cfg);
10320 if (rc < 0) {
10321 dev_err(&pdev->dev,
10322 "Couldn't allocate enough memory for device driver!\n");
10323 goto out_msi_disable;
10324 }
10325
10326 /* Save away PCI config space for use following IOA reset */
10327 rc = pci_save_state(pdev);
10328
10329 if (rc != PCIBIOS_SUCCESSFUL) {
10330 dev_err(&pdev->dev, "Failed to save PCI config space\n");
10331 rc = -EIO;
10332 goto cleanup_nolog;
10333 }
10334
10335 /*
10336 * If HRRQ updated interrupt is not masked, or reset alert is set,
10337 * the card is in an unknown state and needs a hard reset
10338 */
10339 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
10340 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
10341 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
10342 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
10343 ioa_cfg->needs_hard_reset = 1;
10344 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
10345 ioa_cfg->needs_hard_reset = 1;
10346 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
10347 ioa_cfg->ioa_unit_checked = 1;
10348
10349 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10350 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10351 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10352
10353 if (pdev->msi_enabled || pdev->msix_enabled) {
10354 name_msi_vectors(ioa_cfg);
10355 rc = request_irq(pci_irq_vector(pdev, 0), ipr_isr, 0,
10356 ioa_cfg->vectors_info[0].desc,
10357 &ioa_cfg->hrrq[0]);
10358 if (!rc)
10359 rc = ipr_request_other_msi_irqs(ioa_cfg, pdev);
10360 } else {
10361 rc = request_irq(pdev->irq, ipr_isr,
10362 IRQF_SHARED,
10363 IPR_NAME, &ioa_cfg->hrrq[0]);
10364 }
10365 if (rc) {
10366 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
10367 pdev->irq, rc);
10368 goto cleanup_nolog;
10369 }
10370
10371 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
10372 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
10373 ioa_cfg->needs_warm_reset = 1;
10374 ioa_cfg->reset = ipr_reset_slot_reset;
10375
10376 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d",
10377 WQ_MEM_RECLAIM, host->host_no);
10378
10379 if (!ioa_cfg->reset_work_q) {
10380 dev_err(&pdev->dev, "Couldn't register reset workqueue\n");
10381 rc = -ENOMEM;
10382 goto out_free_irq;
10383 }
10384 } else
10385 ioa_cfg->reset = ipr_reset_start_bist;
10386
10387 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10388 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
10389 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10390
10391 LEAVE;
10392 out:
10393 return rc;
10394
10395 out_free_irq:
10396 ipr_free_irqs(ioa_cfg);
10397 cleanup_nolog:
10398 ipr_free_mem(ioa_cfg);
10399 out_msi_disable:
10400 ipr_wait_for_pci_err_recovery(ioa_cfg);
10401 pci_free_irq_vectors(pdev);
10402 cleanup_nomem:
10403 iounmap(ipr_regs);
10404 out_disable:
10405 pci_disable_device(pdev);
10406 out_release_regions:
10407 pci_release_regions(pdev);
10408 out_scsi_host_put:
10409 scsi_host_put(host);
10410 goto out;
10411 }
10412
10413 /**
10414 * ipr_initiate_ioa_bringdown - Bring down an adapter
10415 * @ioa_cfg: ioa config struct
10416 * @shutdown_type: shutdown type
10417 *
10418 * Description: This function will initiate bringing down the adapter.
10419 * This consists of issuing an IOA shutdown to the adapter
10420 * to flush the cache, and running BIST.
10421 * If the caller needs to wait on the completion of the reset,
10422 * the caller must sleep on the reset_wait_q.
10423 *
10424 * Return value:
10425 * none
10426 **/
10427 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
10428 enum ipr_shutdown_type shutdown_type)
10429 {
10430 ENTER;
10431 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
10432 ioa_cfg->sdt_state = ABORT_DUMP;
10433 ioa_cfg->reset_retries = 0;
10434 ioa_cfg->in_ioa_bringdown = 1;
10435 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
10436 LEAVE;
10437 }
10438
10439 /**
10440 * __ipr_remove - Remove a single adapter
10441 * @pdev: pci device struct
10442 *
10443 * Adapter hot plug remove entry point.
10444 *
10445 * Return value:
10446 * none
10447 **/
10448 static void __ipr_remove(struct pci_dev *pdev)
10449 {
10450 unsigned long host_lock_flags = 0;
10451 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10452 int i;
10453 unsigned long driver_lock_flags;
10454 ENTER;
10455
10456 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10457 while (ioa_cfg->in_reset_reload) {
10458 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10459 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10460 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10461 }
10462
10463 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
10464 spin_lock(&ioa_cfg->hrrq[i]._lock);
10465 ioa_cfg->hrrq[i].removing_ioa = 1;
10466 spin_unlock(&ioa_cfg->hrrq[i]._lock);
10467 }
10468 wmb();
10469 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
10470
10471 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10472 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10473 flush_work(&ioa_cfg->work_q);
10474 if (ioa_cfg->reset_work_q)
10475 flush_workqueue(ioa_cfg->reset_work_q);
10476 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
10477 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10478
10479 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10480 list_del(&ioa_cfg->queue);
10481 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10482
10483 if (ioa_cfg->sdt_state == ABORT_DUMP)
10484 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
10485 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10486
10487 ipr_free_all_resources(ioa_cfg);
10488
10489 LEAVE;
10490 }
10491
10492 /**
10493 * ipr_remove - IOA hot plug remove entry point
10494 * @pdev: pci device struct
10495 *
10496 * Adapter hot plug remove entry point.
10497 *
10498 * Return value:
10499 * none
10500 **/
10501 static void ipr_remove(struct pci_dev *pdev)
10502 {
10503 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10504
10505 ENTER;
10506
10507 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10508 &ipr_trace_attr);
10509 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10510 &ipr_dump_attr);
10511 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj,
10512 &ipr_ioa_async_err_log);
10513 scsi_remove_host(ioa_cfg->host);
10514
10515 __ipr_remove(pdev);
10516
10517 LEAVE;
10518 }
10519
10520 /**
10521 * ipr_probe - Adapter hot plug add entry point
10522 *
10523 * Return value:
10524 * 0 on success / non-zero on failure
10525 **/
10526 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
10527 {
10528 struct ipr_ioa_cfg *ioa_cfg;
10529 unsigned long flags;
10530 int rc, i;
10531
10532 rc = ipr_probe_ioa(pdev, dev_id);
10533
10534 if (rc)
10535 return rc;
10536
10537 ioa_cfg = pci_get_drvdata(pdev);
10538 rc = ipr_probe_ioa_part2(ioa_cfg);
10539
10540 if (rc) {
10541 __ipr_remove(pdev);
10542 return rc;
10543 }
10544
10545 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
10546
10547 if (rc) {
10548 __ipr_remove(pdev);
10549 return rc;
10550 }
10551
10552 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
10553 &ipr_trace_attr);
10554
10555 if (rc) {
10556 scsi_remove_host(ioa_cfg->host);
10557 __ipr_remove(pdev);
10558 return rc;
10559 }
10560
10561 rc = sysfs_create_bin_file(&ioa_cfg->host->shost_dev.kobj,
10562 &ipr_ioa_async_err_log);
10563
10564 if (rc) {
10565 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10566 &ipr_dump_attr);
10567 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10568 &ipr_trace_attr);
10569 scsi_remove_host(ioa_cfg->host);
10570 __ipr_remove(pdev);
10571 return rc;
10572 }
10573
10574 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
10575 &ipr_dump_attr);
10576
10577 if (rc) {
10578 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj,
10579 &ipr_ioa_async_err_log);
10580 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10581 &ipr_trace_attr);
10582 scsi_remove_host(ioa_cfg->host);
10583 __ipr_remove(pdev);
10584 return rc;
10585 }
10586 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10587 ioa_cfg->scan_enabled = 1;
10588 schedule_work(&ioa_cfg->work_q);
10589 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10590
10591 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight;
10592
10593 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10594 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
10595 irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
10596 ioa_cfg->iopoll_weight, ipr_iopoll);
10597 }
10598 }
10599
10600 scsi_scan_host(ioa_cfg->host);
10601
10602 return 0;
10603 }
10604
10605 /**
10606 * ipr_shutdown - Shutdown handler.
10607 * @pdev: pci device struct
10608 *
10609 * This function is invoked upon system shutdown/reboot. It will issue
10610 * an adapter shutdown to the adapter to flush the write cache.
10611 *
10612 * Return value:
10613 * none
10614 **/
10615 static void ipr_shutdown(struct pci_dev *pdev)
10616 {
10617 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10618 unsigned long lock_flags = 0;
10619 enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL;
10620 int i;
10621
10622 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10623 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10624 ioa_cfg->iopoll_weight = 0;
10625 for (i = 1; i < ioa_cfg->hrrq_num; i++)
10626 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
10627 }
10628
10629 while (ioa_cfg->in_reset_reload) {
10630 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10631 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10632 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10633 }
10634
10635 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64)
10636 shutdown_type = IPR_SHUTDOWN_QUIESCE;
10637
10638 ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type);
10639 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10640 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10641 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) {
10642 ipr_free_irqs(ioa_cfg);
10643 pci_disable_device(ioa_cfg->pdev);
10644 }
10645 }
10646
10647 static struct pci_device_id ipr_pci_table[] = {
10648 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10649 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
10650 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10651 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
10652 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10653 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
10654 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10655 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
10656 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10657 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
10658 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10659 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
10660 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10661 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
10662 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10663 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
10664 IPR_USE_LONG_TRANSOP_TIMEOUT },
10665 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10666 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10667 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10668 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10669 IPR_USE_LONG_TRANSOP_TIMEOUT },
10670 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10671 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10672 IPR_USE_LONG_TRANSOP_TIMEOUT },
10673 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10674 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10675 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10676 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10677 IPR_USE_LONG_TRANSOP_TIMEOUT},
10678 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10679 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10680 IPR_USE_LONG_TRANSOP_TIMEOUT },
10681 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10682 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
10683 IPR_USE_LONG_TRANSOP_TIMEOUT },
10684 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10685 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
10686 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10687 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
10688 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10689 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
10690 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
10691 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
10692 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
10693 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10694 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
10695 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10696 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
10697 IPR_USE_LONG_TRANSOP_TIMEOUT },
10698 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10699 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
10700 IPR_USE_LONG_TRANSOP_TIMEOUT },
10701 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10702 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
10703 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10704 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
10705 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10706 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
10707 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10708 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 },
10709 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10710 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
10711 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10712 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
10713 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10714 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
10715 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10716 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
10717 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10718 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
10719 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10720 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 },
10721 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10722 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
10723 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10724 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 },
10725 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10726 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 },
10727 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10728 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 },
10729 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10730 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 },
10731 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10732 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 },
10733 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10734 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 },
10735 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10736 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 },
10737 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10738 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 },
10739 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10740 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 },
10741 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10742 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 },
10743 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10744 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 },
10745 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10746 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 },
10747 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10748 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 },
10749 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10750 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 },
10751 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10752 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 },
10753 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE,
10754 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580A, 0, 0, 0 },
10755 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE,
10756 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580B, 0, 0, 0 },
10757 { }
10758 };
10759 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
10760
10761 static const struct pci_error_handlers ipr_err_handler = {
10762 .error_detected = ipr_pci_error_detected,
10763 .mmio_enabled = ipr_pci_mmio_enabled,
10764 .slot_reset = ipr_pci_slot_reset,
10765 };
10766
10767 static struct pci_driver ipr_driver = {
10768 .name = IPR_NAME,
10769 .id_table = ipr_pci_table,
10770 .probe = ipr_probe,
10771 .remove = ipr_remove,
10772 .shutdown = ipr_shutdown,
10773 .err_handler = &ipr_err_handler,
10774 };
10775
10776 /**
10777 * ipr_halt_done - Shutdown prepare completion
10778 *
10779 * Return value:
10780 * none
10781 **/
10782 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
10783 {
10784 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
10785 }
10786
10787 /**
10788 * ipr_halt - Issue shutdown prepare to all adapters
10789 *
10790 * Return value:
10791 * NOTIFY_OK on success / NOTIFY_DONE on failure
10792 **/
10793 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
10794 {
10795 struct ipr_cmnd *ipr_cmd;
10796 struct ipr_ioa_cfg *ioa_cfg;
10797 unsigned long flags = 0, driver_lock_flags;
10798
10799 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
10800 return NOTIFY_DONE;
10801
10802 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10803
10804 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
10805 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10806 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds ||
10807 (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) {
10808 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10809 continue;
10810 }
10811
10812 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
10813 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
10814 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
10815 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
10816 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
10817
10818 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
10819 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10820 }
10821 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10822
10823 return NOTIFY_OK;
10824 }
10825
10826 static struct notifier_block ipr_notifier = {
10827 ipr_halt, NULL, 0
10828 };
10829
10830 /**
10831 * ipr_init - Module entry point
10832 *
10833 * Return value:
10834 * 0 on success / negative value on failure
10835 **/
10836 static int __init ipr_init(void)
10837 {
10838 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
10839 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
10840
10841 register_reboot_notifier(&ipr_notifier);
10842 return pci_register_driver(&ipr_driver);
10843 }
10844
10845 /**
10846 * ipr_exit - Module unload
10847 *
10848 * Module unload entry point.
10849 *
10850 * Return value:
10851 * none
10852 **/
10853 static void __exit ipr_exit(void)
10854 {
10855 unregister_reboot_notifier(&ipr_notifier);
10856 pci_unregister_driver(&ipr_driver);
10857 }
10858
10859 module_init(ipr_init);
10860 module_exit(ipr_exit);
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