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drm/tests: hdmi: Fix memory leaks in drm_display_mode_from_cea_vic()
[drm/drm-misc.git] / drivers / scsi / ipr.c
blob31cf2d31cceba090859c15f72f85fe7ca1698a55
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * ipr.c -- driver for IBM Power Linux RAID adapters
4 *
5 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
6 *
7 * Copyright (C) 2003, 2004 IBM Corporation
8 */
9
10 /*
11 * Notes:
12 *
13 * This driver is used to control the following SCSI adapters:
14 *
15 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
16 *
17 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
18 * PCI-X Dual Channel Ultra 320 SCSI Adapter
19 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
20 * Embedded SCSI adapter on p615 and p655 systems
21 *
22 * Supported Hardware Features:
23 * - Ultra 320 SCSI controller
24 * - PCI-X host interface
25 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
26 * - Non-Volatile Write Cache
27 * - Supports attachment of non-RAID disks, tape, and optical devices
28 * - RAID Levels 0, 5, 10
29 * - Hot spare
30 * - Background Parity Checking
31 * - Background Data Scrubbing
32 * - Ability to increase the capacity of an existing RAID 5 disk array
33 * by adding disks
34 *
35 * Driver Features:
36 * - Tagged command queuing
37 * - Adapter microcode download
38 * - PCI hot plug
39 * - SCSI device hot plug
40 *
41 */
42
43 #include <linux/fs.h>
44 #include <linux/init.h>
45 #include <linux/types.h>
46 #include <linux/errno.h>
47 #include <linux/kernel.h>
48 #include <linux/slab.h>
49 #include <linux/vmalloc.h>
50 #include <linux/ioport.h>
51 #include <linux/delay.h>
52 #include <linux/pci.h>
53 #include <linux/wait.h>
54 #include <linux/spinlock.h>
55 #include <linux/sched.h>
56 #include <linux/interrupt.h>
57 #include <linux/blkdev.h>
58 #include <linux/firmware.h>
59 #include <linux/module.h>
60 #include <linux/moduleparam.h>
61 #include <linux/hdreg.h>
62 #include <linux/reboot.h>
63 #include <linux/stringify.h>
64 #include <asm/io.h>
65 #include <asm/irq.h>
66 #include <asm/processor.h>
67 #include <scsi/scsi.h>
68 #include <scsi/scsi_host.h>
69 #include <scsi/scsi_tcq.h>
70 #include <scsi/scsi_eh.h>
71 #include <scsi/scsi_cmnd.h>
72 #include "ipr.h"
73
74 /*
75 * Global Data
76 */
77 static LIST_HEAD(ipr_ioa_head);
78 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
79 static unsigned int ipr_max_speed = 1;
80 static unsigned int ipr_fastfail = 0;
81 static unsigned int ipr_transop_timeout = 0;
82 static unsigned int ipr_debug = 0;
83 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
84 static unsigned int ipr_dual_ioa_raid = 1;
85 static unsigned int ipr_number_of_msix = 16;
86 static unsigned int ipr_fast_reboot;
87 static DEFINE_SPINLOCK(ipr_driver_lock);
88
89 /* This table describes the differences between DMA controller chips */
90 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
91 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
92 .mailbox = 0x0042C,
93 .max_cmds = 100,
94 .cache_line_size = 0x20,
95 .clear_isr = 1,
96 .iopoll_weight = 0,
97 {
98 .set_interrupt_mask_reg = 0x0022C,
99 .clr_interrupt_mask_reg = 0x00230,
100 .clr_interrupt_mask_reg32 = 0x00230,
101 .sense_interrupt_mask_reg = 0x0022C,
102 .sense_interrupt_mask_reg32 = 0x0022C,
103 .clr_interrupt_reg = 0x00228,
104 .clr_interrupt_reg32 = 0x00228,
105 .sense_interrupt_reg = 0x00224,
106 .sense_interrupt_reg32 = 0x00224,
107 .ioarrin_reg = 0x00404,
108 .sense_uproc_interrupt_reg = 0x00214,
109 .sense_uproc_interrupt_reg32 = 0x00214,
110 .set_uproc_interrupt_reg = 0x00214,
111 .set_uproc_interrupt_reg32 = 0x00214,
112 .clr_uproc_interrupt_reg = 0x00218,
113 .clr_uproc_interrupt_reg32 = 0x00218
114 }
115 },
116 { /* Snipe and Scamp */
117 .mailbox = 0x0052C,
118 .max_cmds = 100,
119 .cache_line_size = 0x20,
120 .clear_isr = 1,
121 .iopoll_weight = 0,
122 {
123 .set_interrupt_mask_reg = 0x00288,
124 .clr_interrupt_mask_reg = 0x0028C,
125 .clr_interrupt_mask_reg32 = 0x0028C,
126 .sense_interrupt_mask_reg = 0x00288,
127 .sense_interrupt_mask_reg32 = 0x00288,
128 .clr_interrupt_reg = 0x00284,
129 .clr_interrupt_reg32 = 0x00284,
130 .sense_interrupt_reg = 0x00280,
131 .sense_interrupt_reg32 = 0x00280,
132 .ioarrin_reg = 0x00504,
133 .sense_uproc_interrupt_reg = 0x00290,
134 .sense_uproc_interrupt_reg32 = 0x00290,
135 .set_uproc_interrupt_reg = 0x00290,
136 .set_uproc_interrupt_reg32 = 0x00290,
137 .clr_uproc_interrupt_reg = 0x00294,
138 .clr_uproc_interrupt_reg32 = 0x00294
139 }
140 },
141 { /* CRoC */
142 .mailbox = 0x00044,
143 .max_cmds = 1000,
144 .cache_line_size = 0x20,
145 .clear_isr = 0,
146 .iopoll_weight = 64,
147 {
148 .set_interrupt_mask_reg = 0x00010,
149 .clr_interrupt_mask_reg = 0x00018,
150 .clr_interrupt_mask_reg32 = 0x0001C,
151 .sense_interrupt_mask_reg = 0x00010,
152 .sense_interrupt_mask_reg32 = 0x00014,
153 .clr_interrupt_reg = 0x00008,
154 .clr_interrupt_reg32 = 0x0000C,
155 .sense_interrupt_reg = 0x00000,
156 .sense_interrupt_reg32 = 0x00004,
157 .ioarrin_reg = 0x00070,
158 .sense_uproc_interrupt_reg = 0x00020,
159 .sense_uproc_interrupt_reg32 = 0x00024,
160 .set_uproc_interrupt_reg = 0x00020,
161 .set_uproc_interrupt_reg32 = 0x00024,
162 .clr_uproc_interrupt_reg = 0x00028,
163 .clr_uproc_interrupt_reg32 = 0x0002C,
164 .init_feedback_reg = 0x0005C,
165 .dump_addr_reg = 0x00064,
166 .dump_data_reg = 0x00068,
167 .endian_swap_reg = 0x00084
168 }
169 },
170 };
171
172 static const struct ipr_chip_t ipr_chip[] = {
173 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
174 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
175 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
176 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
177 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, true, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
178 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
179 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
180 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
181 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
182 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
183 };
184
185 static int ipr_max_bus_speeds[] = {
186 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
187 };
188
189 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
190 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
191 module_param_named(max_speed, ipr_max_speed, uint, 0);
192 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
193 module_param_named(log_level, ipr_log_level, uint, 0);
194 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
195 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
196 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
197 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
198 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
199 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
200 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
201 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
202 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
203 module_param_named(max_devs, ipr_max_devs, int, 0);
204 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
205 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
206 module_param_named(number_of_msix, ipr_number_of_msix, int, 0);
207 MODULE_PARM_DESC(number_of_msix, "Specify the number of MSIX interrupts to use on capable adapters (1 - 16). (default:16)");
208 module_param_named(fast_reboot, ipr_fast_reboot, int, S_IRUGO | S_IWUSR);
209 MODULE_PARM_DESC(fast_reboot, "Skip adapter shutdown during reboot. Set to 1 to enable. (default: 0)");
210 MODULE_LICENSE("GPL");
211 MODULE_VERSION(IPR_DRIVER_VERSION);
212
213 /* A constant array of IOASCs/URCs/Error Messages */
214 static const
215 struct ipr_error_table_t ipr_error_table[] = {
216 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
217 "8155: An unknown error was received"},
218 {0x00330000, 0, 0,
219 "Soft underlength error"},
220 {0x005A0000, 0, 0,
221 "Command to be cancelled not found"},
222 {0x00808000, 0, 0,
223 "Qualified success"},
224 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
225 "FFFE: Soft device bus error recovered by the IOA"},
226 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
227 "4101: Soft device bus fabric error"},
228 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
229 "FFFC: Logical block guard error recovered by the device"},
230 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
231 "FFFC: Logical block reference tag error recovered by the device"},
232 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
233 "4171: Recovered scatter list tag / sequence number error"},
234 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
235 "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
236 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
237 "4171: Recovered logical block sequence number error on IOA to Host transfer"},
238 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
239 "FFFD: Recovered logical block reference tag error detected by the IOA"},
240 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
241 "FFFD: Logical block guard error recovered by the IOA"},
242 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
243 "FFF9: Device sector reassign successful"},
244 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
245 "FFF7: Media error recovered by device rewrite procedures"},
246 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
247 "7001: IOA sector reassignment successful"},
248 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
249 "FFF9: Soft media error. Sector reassignment recommended"},
250 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
251 "FFF7: Media error recovered by IOA rewrite procedures"},
252 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
253 "FF3D: Soft PCI bus error recovered by the IOA"},
254 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
255 "FFF6: Device hardware error recovered by the IOA"},
256 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
257 "FFF6: Device hardware error recovered by the device"},
258 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
259 "FF3D: Soft IOA error recovered by the IOA"},
260 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
261 "FFFA: Undefined device response recovered by the IOA"},
262 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
263 "FFF6: Device bus error, message or command phase"},
264 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
265 "FFFE: Task Management Function failed"},
266 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
267 "FFF6: Failure prediction threshold exceeded"},
268 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
269 "8009: Impending cache battery pack failure"},
270 {0x02040100, 0, 0,
271 "Logical Unit in process of becoming ready"},
272 {0x02040200, 0, 0,
273 "Initializing command required"},
274 {0x02040400, 0, 0,
275 "34FF: Disk device format in progress"},
276 {0x02040C00, 0, 0,
277 "Logical unit not accessible, target port in unavailable state"},
278 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
279 "9070: IOA requested reset"},
280 {0x023F0000, 0, 0,
281 "Synchronization required"},
282 {0x02408500, 0, 0,
283 "IOA microcode download required"},
284 {0x02408600, 0, 0,
285 "Device bus connection is prohibited by host"},
286 {0x024E0000, 0, 0,
287 "No ready, IOA shutdown"},
288 {0x025A0000, 0, 0,
289 "Not ready, IOA has been shutdown"},
290 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
291 "3020: Storage subsystem configuration error"},
292 {0x03110B00, 0, 0,
293 "FFF5: Medium error, data unreadable, recommend reassign"},
294 {0x03110C00, 0, 0,
295 "7000: Medium error, data unreadable, do not reassign"},
296 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
297 "FFF3: Disk media format bad"},
298 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
299 "3002: Addressed device failed to respond to selection"},
300 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
301 "3100: Device bus error"},
302 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
303 "3109: IOA timed out a device command"},
304 {0x04088000, 0, 0,
305 "3120: SCSI bus is not operational"},
306 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
307 "4100: Hard device bus fabric error"},
308 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
309 "310C: Logical block guard error detected by the device"},
310 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
311 "310C: Logical block reference tag error detected by the device"},
312 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
313 "4170: Scatter list tag / sequence number error"},
314 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
315 "8150: Logical block CRC error on IOA to Host transfer"},
316 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
317 "4170: Logical block sequence number error on IOA to Host transfer"},
318 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
319 "310D: Logical block reference tag error detected by the IOA"},
320 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
321 "310D: Logical block guard error detected by the IOA"},
322 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
323 "9000: IOA reserved area data check"},
324 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
325 "9001: IOA reserved area invalid data pattern"},
326 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
327 "9002: IOA reserved area LRC error"},
328 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
329 "Hardware Error, IOA metadata access error"},
330 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
331 "102E: Out of alternate sectors for disk storage"},
332 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
333 "FFF4: Data transfer underlength error"},
334 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
335 "FFF4: Data transfer overlength error"},
336 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
337 "3400: Logical unit failure"},
338 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
339 "FFF4: Device microcode is corrupt"},
340 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
341 "8150: PCI bus error"},
342 {0x04430000, 1, 0,
343 "Unsupported device bus message received"},
344 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
345 "FFF4: Disk device problem"},
346 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
347 "8150: Permanent IOA failure"},
348 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
349 "3010: Disk device returned wrong response to IOA"},
350 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
351 "8151: IOA microcode error"},
352 {0x04448500, 0, 0,
353 "Device bus status error"},
354 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
355 "8157: IOA error requiring IOA reset to recover"},
356 {0x04448700, 0, 0,
357 "ATA device status error"},
358 {0x04490000, 0, 0,
359 "Message reject received from the device"},
360 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
361 "8008: A permanent cache battery pack failure occurred"},
362 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
363 "9090: Disk unit has been modified after the last known status"},
364 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
365 "9081: IOA detected device error"},
366 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
367 "9082: IOA detected device error"},
368 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
369 "3110: Device bus error, message or command phase"},
370 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
371 "3110: SAS Command / Task Management Function failed"},
372 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
373 "9091: Incorrect hardware configuration change has been detected"},
374 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
375 "9073: Invalid multi-adapter configuration"},
376 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
377 "4010: Incorrect connection between cascaded expanders"},
378 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
379 "4020: Connections exceed IOA design limits"},
380 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
381 "4030: Incorrect multipath connection"},
382 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
383 "4110: Unsupported enclosure function"},
384 {0x04679800, 0, IPR_DEFAULT_LOG_LEVEL,
385 "4120: SAS cable VPD cannot be read"},
386 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
387 "FFF4: Command to logical unit failed"},
388 {0x05240000, 1, 0,
389 "Illegal request, invalid request type or request packet"},
390 {0x05250000, 0, 0,
391 "Illegal request, invalid resource handle"},
392 {0x05258000, 0, 0,
393 "Illegal request, commands not allowed to this device"},
394 {0x05258100, 0, 0,
395 "Illegal request, command not allowed to a secondary adapter"},
396 {0x05258200, 0, 0,
397 "Illegal request, command not allowed to a non-optimized resource"},
398 {0x05260000, 0, 0,
399 "Illegal request, invalid field in parameter list"},
400 {0x05260100, 0, 0,
401 "Illegal request, parameter not supported"},
402 {0x05260200, 0, 0,
403 "Illegal request, parameter value invalid"},
404 {0x052C0000, 0, 0,
405 "Illegal request, command sequence error"},
406 {0x052C8000, 1, 0,
407 "Illegal request, dual adapter support not enabled"},
408 {0x052C8100, 1, 0,
409 "Illegal request, another cable connector was physically disabled"},
410 {0x054E8000, 1, 0,
411 "Illegal request, inconsistent group id/group count"},
412 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
413 "9031: Array protection temporarily suspended, protection resuming"},
414 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
415 "9040: Array protection temporarily suspended, protection resuming"},
416 {0x060B0100, 0, IPR_DEFAULT_LOG_LEVEL,
417 "4080: IOA exceeded maximum operating temperature"},
418 {0x060B8000, 0, IPR_DEFAULT_LOG_LEVEL,
419 "4085: Service required"},
420 {0x060B8100, 0, IPR_DEFAULT_LOG_LEVEL,
421 "4086: SAS Adapter Hardware Configuration Error"},
422 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
423 "3140: Device bus not ready to ready transition"},
424 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
425 "FFFB: SCSI bus was reset"},
426 {0x06290500, 0, 0,
427 "FFFE: SCSI bus transition to single ended"},
428 {0x06290600, 0, 0,
429 "FFFE: SCSI bus transition to LVD"},
430 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
431 "FFFB: SCSI bus was reset by another initiator"},
432 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
433 "3029: A device replacement has occurred"},
434 {0x063F8300, 0, IPR_DEFAULT_LOG_LEVEL,
435 "4102: Device bus fabric performance degradation"},
436 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
437 "9051: IOA cache data exists for a missing or failed device"},
438 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
439 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
440 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
441 "9025: Disk unit is not supported at its physical location"},
442 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
443 "3020: IOA detected a SCSI bus configuration error"},
444 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
445 "3150: SCSI bus configuration error"},
446 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
447 "9074: Asymmetric advanced function disk configuration"},
448 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
449 "4040: Incomplete multipath connection between IOA and enclosure"},
450 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
451 "4041: Incomplete multipath connection between enclosure and device"},
452 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
453 "9075: Incomplete multipath connection between IOA and remote IOA"},
454 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
455 "9076: Configuration error, missing remote IOA"},
456 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
457 "4050: Enclosure does not support a required multipath function"},
458 {0x06679800, 0, IPR_DEFAULT_LOG_LEVEL,
459 "4121: Configuration error, required cable is missing"},
460 {0x06679900, 0, IPR_DEFAULT_LOG_LEVEL,
461 "4122: Cable is not plugged into the correct location on remote IOA"},
462 {0x06679A00, 0, IPR_DEFAULT_LOG_LEVEL,
463 "4123: Configuration error, invalid cable vital product data"},
464 {0x06679B00, 0, IPR_DEFAULT_LOG_LEVEL,
465 "4124: Configuration error, both cable ends are plugged into the same IOA"},
466 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
467 "4070: Logically bad block written on device"},
468 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
469 "9041: Array protection temporarily suspended"},
470 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
471 "9042: Corrupt array parity detected on specified device"},
472 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
473 "9030: Array no longer protected due to missing or failed disk unit"},
474 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
475 "9071: Link operational transition"},
476 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
477 "9072: Link not operational transition"},
478 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
479 "9032: Array exposed but still protected"},
480 {0x066B8300, 0, IPR_DEBUG_LOG_LEVEL,
481 "70DD: Device forced failed by disrupt device command"},
482 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
483 "4061: Multipath redundancy level got better"},
484 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
485 "4060: Multipath redundancy level got worse"},
486 {0x06808100, 0, IPR_DEBUG_LOG_LEVEL,
487 "9083: Device raw mode enabled"},
488 {0x06808200, 0, IPR_DEBUG_LOG_LEVEL,
489 "9084: Device raw mode disabled"},
490 {0x07270000, 0, 0,
491 "Failure due to other device"},
492 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
493 "9008: IOA does not support functions expected by devices"},
494 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
495 "9010: Cache data associated with attached devices cannot be found"},
496 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
497 "9011: Cache data belongs to devices other than those attached"},
498 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
499 "9020: Array missing 2 or more devices with only 1 device present"},
500 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
501 "9021: Array missing 2 or more devices with 2 or more devices present"},
502 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
503 "9022: Exposed array is missing a required device"},
504 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
505 "9023: Array member(s) not at required physical locations"},
506 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
507 "9024: Array not functional due to present hardware configuration"},
508 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
509 "9026: Array not functional due to present hardware configuration"},
510 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
511 "9027: Array is missing a device and parity is out of sync"},
512 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
513 "9028: Maximum number of arrays already exist"},
514 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
515 "9050: Required cache data cannot be located for a disk unit"},
516 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
517 "9052: Cache data exists for a device that has been modified"},
518 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
519 "9054: IOA resources not available due to previous problems"},
520 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
521 "9092: Disk unit requires initialization before use"},
522 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
523 "9029: Incorrect hardware configuration change has been detected"},
524 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
525 "9060: One or more disk pairs are missing from an array"},
526 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
527 "9061: One or more disks are missing from an array"},
528 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
529 "9062: One or more disks are missing from an array"},
530 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
531 "9063: Maximum number of functional arrays has been exceeded"},
532 {0x07279A00, 0, 0,
533 "Data protect, other volume set problem"},
534 {0x0B260000, 0, 0,
535 "Aborted command, invalid descriptor"},
536 {0x0B3F9000, 0, 0,
537 "Target operating conditions have changed, dual adapter takeover"},
538 {0x0B530200, 0, 0,
539 "Aborted command, medium removal prevented"},
540 {0x0B5A0000, 0, 0,
541 "Command terminated by host"},
542 {0x0B5B8000, 0, 0,
543 "Aborted command, command terminated by host"}
544 };
545
546 static const struct ipr_ses_table_entry ipr_ses_table[] = {
547 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
548 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
549 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
550 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
551 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
552 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
553 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
554 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
555 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
556 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
557 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
558 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
559 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
560 };
561
562 /*
563 * Function Prototypes
564 */
565 static int ipr_reset_alert(struct ipr_cmnd *);
566 static void ipr_process_ccn(struct ipr_cmnd *);
567 static void ipr_process_error(struct ipr_cmnd *);
568 static void ipr_reset_ioa_job(struct ipr_cmnd *);
569 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
570 enum ipr_shutdown_type);
571
572 #ifdef CONFIG_SCSI_IPR_TRACE
573 /**
574 * ipr_trc_hook - Add a trace entry to the driver trace
575 * @ipr_cmd: ipr command struct
576 * @type: trace type
577 * @add_data: additional data
578 *
579 * Return value:
580 * none
581 **/
582 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
583 u8 type, u32 add_data)
584 {
585 struct ipr_trace_entry *trace_entry;
586 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
587 unsigned int trace_index;
588
589 trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK;
590 trace_entry = &ioa_cfg->trace[trace_index];
591 trace_entry->time = jiffies;
592 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
593 trace_entry->type = type;
594 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
595 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
596 trace_entry->u.add_data = add_data;
597 wmb();
598 }
599 #else
600 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0)
601 #endif
602
603 /**
604 * ipr_lock_and_done - Acquire lock and complete command
605 * @ipr_cmd: ipr command struct
606 *
607 * Return value:
608 * none
609 **/
610 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd)
611 {
612 unsigned long lock_flags;
613 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
614
615 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
616 ipr_cmd->done(ipr_cmd);
617 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
618 }
619
620 /**
621 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
622 * @ipr_cmd: ipr command struct
623 *
624 * Return value:
625 * none
626 **/
627 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
628 {
629 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
630 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
631 dma_addr_t dma_addr = ipr_cmd->dma_addr;
632 int hrrq_id;
633
634 hrrq_id = ioarcb->cmd_pkt.hrrq_id;
635 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
636 ioarcb->cmd_pkt.hrrq_id = hrrq_id;
637 ioarcb->data_transfer_length = 0;
638 ioarcb->read_data_transfer_length = 0;
639 ioarcb->ioadl_len = 0;
640 ioarcb->read_ioadl_len = 0;
641
642 if (ipr_cmd->ioa_cfg->sis64) {
643 ioarcb->u.sis64_addr_data.data_ioadl_addr =
644 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
645 } else {
646 ioarcb->write_ioadl_addr =
647 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
648 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
649 }
650
651 ioasa->hdr.ioasc = 0;
652 ioasa->hdr.residual_data_len = 0;
653 ipr_cmd->scsi_cmd = NULL;
654 ipr_cmd->sense_buffer[0] = 0;
655 ipr_cmd->dma_use_sg = 0;
656 }
657
658 /**
659 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
660 * @ipr_cmd: ipr command struct
661 * @fast_done: fast done function call-back
662 *
663 * Return value:
664 * none
665 **/
666 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd,
667 void (*fast_done) (struct ipr_cmnd *))
668 {
669 ipr_reinit_ipr_cmnd(ipr_cmd);
670 ipr_cmd->u.scratch = 0;
671 ipr_cmd->sibling = NULL;
672 ipr_cmd->eh_comp = NULL;
673 ipr_cmd->fast_done = fast_done;
674 timer_setup(&ipr_cmd->timer, NULL, 0);
675 }
676
677 /**
678 * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
679 * @hrrq: hrr queue
680 *
681 * Return value:
682 * pointer to ipr command struct
683 **/
684 static
685 struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue *hrrq)
686 {
687 struct ipr_cmnd *ipr_cmd = NULL;
688
689 if (likely(!list_empty(&hrrq->hrrq_free_q))) {
690 ipr_cmd = list_entry(hrrq->hrrq_free_q.next,
691 struct ipr_cmnd, queue);
692 list_del(&ipr_cmd->queue);
693 }
694
695
696 return ipr_cmd;
697 }
698
699 /**
700 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it
701 * @ioa_cfg: ioa config struct
702 *
703 * Return value:
704 * pointer to ipr command struct
705 **/
706 static
707 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
708 {
709 struct ipr_cmnd *ipr_cmd =
710 __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]);
711 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
712 return ipr_cmd;
713 }
714
715 /**
716 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
717 * @ioa_cfg: ioa config struct
718 * @clr_ints: interrupts to clear
719 *
720 * This function masks all interrupts on the adapter, then clears the
721 * interrupts specified in the mask
722 *
723 * Return value:
724 * none
725 **/
726 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
727 u32 clr_ints)
728 {
729 int i;
730
731 /* Stop new interrupts */
732 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
733 spin_lock(&ioa_cfg->hrrq[i]._lock);
734 ioa_cfg->hrrq[i].allow_interrupts = 0;
735 spin_unlock(&ioa_cfg->hrrq[i]._lock);
736 }
737
738 /* Set interrupt mask to stop all new interrupts */
739 if (ioa_cfg->sis64)
740 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
741 else
742 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
743
744 /* Clear any pending interrupts */
745 if (ioa_cfg->sis64)
746 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
747 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
748 readl(ioa_cfg->regs.sense_interrupt_reg);
749 }
750
751 /**
752 * ipr_save_pcix_cmd_reg - Save PCI-X command register
753 * @ioa_cfg: ioa config struct
754 *
755 * Return value:
756 * 0 on success / -EIO on failure
757 **/
758 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
759 {
760 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
761 int rc;
762
763 if (pcix_cmd_reg == 0)
764 return 0;
765
766 rc = pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
767 &ioa_cfg->saved_pcix_cmd_reg);
768 if (rc != PCIBIOS_SUCCESSFUL) {
769 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
770 return -EIO;
771 }
772
773 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
774 return 0;
775 }
776
777 /**
778 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
779 * @ioa_cfg: ioa config struct
780 *
781 * Return value:
782 * 0 on success / -EIO on failure
783 **/
784 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
785 {
786 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
787 int rc;
788
789 if (pcix_cmd_reg) {
790 rc = pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
791 ioa_cfg->saved_pcix_cmd_reg);
792 if (rc != PCIBIOS_SUCCESSFUL) {
793 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
794 return -EIO;
795 }
796 }
797
798 return 0;
799 }
800
801
802 /**
803 * __ipr_scsi_eh_done - mid-layer done function for aborted ops
804 * @ipr_cmd: ipr command struct
805 *
806 * This function is invoked by the interrupt handler for
807 * ops generated by the SCSI mid-layer which are being aborted.
808 *
809 * Return value:
810 * none
811 **/
812 static void __ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
813 {
814 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
815
816 scsi_cmd->result |= (DID_ERROR << 16);
817
818 scsi_dma_unmap(ipr_cmd->scsi_cmd);
819 scsi_done(scsi_cmd);
820 if (ipr_cmd->eh_comp)
821 complete(ipr_cmd->eh_comp);
822 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
823 }
824
825 /**
826 * ipr_scsi_eh_done - mid-layer done function for aborted ops
827 * @ipr_cmd: ipr command struct
828 *
829 * This function is invoked by the interrupt handler for
830 * ops generated by the SCSI mid-layer which are being aborted.
831 *
832 * Return value:
833 * none
834 **/
835 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
836 {
837 unsigned long hrrq_flags;
838 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
839
840 spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
841 __ipr_scsi_eh_done(ipr_cmd);
842 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
843 }
844
845 /**
846 * ipr_fail_all_ops - Fails all outstanding ops.
847 * @ioa_cfg: ioa config struct
848 *
849 * This function fails all outstanding ops.
850 *
851 * Return value:
852 * none
853 **/
854 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
855 {
856 struct ipr_cmnd *ipr_cmd, *temp;
857 struct ipr_hrr_queue *hrrq;
858
859 ENTER;
860 for_each_hrrq(hrrq, ioa_cfg) {
861 spin_lock(&hrrq->_lock);
862 list_for_each_entry_safe(ipr_cmd,
863 temp, &hrrq->hrrq_pending_q, queue) {
864 list_del(&ipr_cmd->queue);
865
866 ipr_cmd->s.ioasa.hdr.ioasc =
867 cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
868 ipr_cmd->s.ioasa.hdr.ilid =
869 cpu_to_be32(IPR_DRIVER_ILID);
870
871 if (ipr_cmd->scsi_cmd)
872 ipr_cmd->done = __ipr_scsi_eh_done;
873
874 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH,
875 IPR_IOASC_IOA_WAS_RESET);
876 del_timer(&ipr_cmd->timer);
877 ipr_cmd->done(ipr_cmd);
878 }
879 spin_unlock(&hrrq->_lock);
880 }
881 LEAVE;
882 }
883
884 /**
885 * ipr_send_command - Send driver initiated requests.
886 * @ipr_cmd: ipr command struct
887 *
888 * This function sends a command to the adapter using the correct write call.
889 * In the case of sis64, calculate the ioarcb size required. Then or in the
890 * appropriate bits.
891 *
892 * Return value:
893 * none
894 **/
895 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
896 {
897 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
898 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
899
900 if (ioa_cfg->sis64) {
901 /* The default size is 256 bytes */
902 send_dma_addr |= 0x1;
903
904 /* If the number of ioadls * size of ioadl > 128 bytes,
905 then use a 512 byte ioarcb */
906 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
907 send_dma_addr |= 0x4;
908 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
909 } else
910 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
911 }
912
913 /**
914 * ipr_do_req - Send driver initiated requests.
915 * @ipr_cmd: ipr command struct
916 * @done: done function
917 * @timeout_func: timeout function
918 * @timeout: timeout value
919 *
920 * This function sends the specified command to the adapter with the
921 * timeout given. The done function is invoked on command completion.
922 *
923 * Return value:
924 * none
925 **/
926 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
927 void (*done) (struct ipr_cmnd *),
928 void (*timeout_func) (struct timer_list *), u32 timeout)
929 {
930 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
931
932 ipr_cmd->done = done;
933
934 ipr_cmd->timer.expires = jiffies + timeout;
935 ipr_cmd->timer.function = timeout_func;
936
937 add_timer(&ipr_cmd->timer);
938
939 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
940
941 ipr_send_command(ipr_cmd);
942 }
943
944 /**
945 * ipr_internal_cmd_done - Op done function for an internally generated op.
946 * @ipr_cmd: ipr command struct
947 *
948 * This function is the op done function for an internally generated,
949 * blocking op. It simply wakes the sleeping thread.
950 *
951 * Return value:
952 * none
953 **/
954 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
955 {
956 if (ipr_cmd->sibling)
957 ipr_cmd->sibling = NULL;
958 else
959 complete(&ipr_cmd->completion);
960 }
961
962 /**
963 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
964 * @ipr_cmd: ipr command struct
965 * @dma_addr: dma address
966 * @len: transfer length
967 * @flags: ioadl flag value
968 *
969 * This function initializes an ioadl in the case where there is only a single
970 * descriptor.
971 *
972 * Return value:
973 * nothing
974 **/
975 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
976 u32 len, int flags)
977 {
978 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
979 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
980
981 ipr_cmd->dma_use_sg = 1;
982
983 if (ipr_cmd->ioa_cfg->sis64) {
984 ioadl64->flags = cpu_to_be32(flags);
985 ioadl64->data_len = cpu_to_be32(len);
986 ioadl64->address = cpu_to_be64(dma_addr);
987
988 ipr_cmd->ioarcb.ioadl_len =
989 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
990 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
991 } else {
992 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
993 ioadl->address = cpu_to_be32(dma_addr);
994
995 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
996 ipr_cmd->ioarcb.read_ioadl_len =
997 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
998 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
999 } else {
1000 ipr_cmd->ioarcb.ioadl_len =
1001 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1002 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1003 }
1004 }
1005 }
1006
1007 /**
1008 * ipr_send_blocking_cmd - Send command and sleep on its completion.
1009 * @ipr_cmd: ipr command struct
1010 * @timeout_func: function to invoke if command times out
1011 * @timeout: timeout
1012 *
1013 * Return value:
1014 * none
1015 **/
1016 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
1017 void (*timeout_func) (struct timer_list *),
1018 u32 timeout)
1019 {
1020 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1021
1022 init_completion(&ipr_cmd->completion);
1023 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
1024
1025 spin_unlock_irq(ioa_cfg->host->host_lock);
1026 wait_for_completion(&ipr_cmd->completion);
1027 spin_lock_irq(ioa_cfg->host->host_lock);
1028 }
1029
1030 static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg)
1031 {
1032 unsigned int hrrq;
1033
1034 if (ioa_cfg->hrrq_num == 1)
1035 hrrq = 0;
1036 else {
1037 hrrq = atomic_add_return(1, &ioa_cfg->hrrq_index);
1038 hrrq = (hrrq % (ioa_cfg->hrrq_num - 1)) + 1;
1039 }
1040 return hrrq;
1041 }
1042
1043 /**
1044 * ipr_send_hcam - Send an HCAM to the adapter.
1045 * @ioa_cfg: ioa config struct
1046 * @type: HCAM type
1047 * @hostrcb: hostrcb struct
1048 *
1049 * This function will send a Host Controlled Async command to the adapter.
1050 * If HCAMs are currently not allowed to be issued to the adapter, it will
1051 * place the hostrcb on the free queue.
1052 *
1053 * Return value:
1054 * none
1055 **/
1056 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
1057 struct ipr_hostrcb *hostrcb)
1058 {
1059 struct ipr_cmnd *ipr_cmd;
1060 struct ipr_ioarcb *ioarcb;
1061
1062 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
1063 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
1064 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
1065 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
1066
1067 ipr_cmd->u.hostrcb = hostrcb;
1068 ioarcb = &ipr_cmd->ioarcb;
1069
1070 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
1071 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
1072 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
1073 ioarcb->cmd_pkt.cdb[1] = type;
1074 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
1075 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
1076
1077 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
1078 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
1079
1080 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
1081 ipr_cmd->done = ipr_process_ccn;
1082 else
1083 ipr_cmd->done = ipr_process_error;
1084
1085 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
1086
1087 ipr_send_command(ipr_cmd);
1088 } else {
1089 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
1090 }
1091 }
1092
1093 /**
1094 * ipr_init_res_entry - Initialize a resource entry struct.
1095 * @res: resource entry struct
1096 * @cfgtew: config table entry wrapper struct
1097 *
1098 * Return value:
1099 * none
1100 **/
1101 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1102 struct ipr_config_table_entry_wrapper *cfgtew)
1103 {
1104 int found = 0;
1105 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1106 struct ipr_resource_entry *gscsi_res = NULL;
1107
1108 res->needs_sync_complete = 0;
1109 res->in_erp = 0;
1110 res->add_to_ml = 0;
1111 res->del_from_ml = 0;
1112 res->resetting_device = 0;
1113 res->reset_occurred = 0;
1114 res->sdev = NULL;
1115
1116 if (ioa_cfg->sis64) {
1117 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1118 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1119 res->qmodel = IPR_QUEUEING_MODEL64(res);
1120 res->type = cfgtew->u.cfgte64->res_type;
1121
1122 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1123 sizeof(res->res_path));
1124
1125 res->bus = 0;
1126 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1127 sizeof(res->dev_lun.scsi_lun));
1128 res->lun = scsilun_to_int(&res->dev_lun);
1129
1130 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1131 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1132 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1133 found = 1;
1134 res->target = gscsi_res->target;
1135 break;
1136 }
1137 }
1138 if (!found) {
1139 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1140 ioa_cfg->max_devs_supported);
1141 set_bit(res->target, ioa_cfg->target_ids);
1142 }
1143 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1144 res->bus = IPR_IOAFP_VIRTUAL_BUS;
1145 res->target = 0;
1146 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1147 res->bus = IPR_ARRAY_VIRTUAL_BUS;
1148 res->target = find_first_zero_bit(ioa_cfg->array_ids,
1149 ioa_cfg->max_devs_supported);
1150 set_bit(res->target, ioa_cfg->array_ids);
1151 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1152 res->bus = IPR_VSET_VIRTUAL_BUS;
1153 res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1154 ioa_cfg->max_devs_supported);
1155 set_bit(res->target, ioa_cfg->vset_ids);
1156 } else {
1157 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1158 ioa_cfg->max_devs_supported);
1159 set_bit(res->target, ioa_cfg->target_ids);
1160 }
1161 } else {
1162 res->qmodel = IPR_QUEUEING_MODEL(res);
1163 res->flags = cfgtew->u.cfgte->flags;
1164 if (res->flags & IPR_IS_IOA_RESOURCE)
1165 res->type = IPR_RES_TYPE_IOAFP;
1166 else
1167 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1168
1169 res->bus = cfgtew->u.cfgte->res_addr.bus;
1170 res->target = cfgtew->u.cfgte->res_addr.target;
1171 res->lun = cfgtew->u.cfgte->res_addr.lun;
1172 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1173 }
1174 }
1175
1176 /**
1177 * ipr_is_same_device - Determine if two devices are the same.
1178 * @res: resource entry struct
1179 * @cfgtew: config table entry wrapper struct
1180 *
1181 * Return value:
1182 * 1 if the devices are the same / 0 otherwise
1183 **/
1184 static int ipr_is_same_device(struct ipr_resource_entry *res,
1185 struct ipr_config_table_entry_wrapper *cfgtew)
1186 {
1187 if (res->ioa_cfg->sis64) {
1188 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1189 sizeof(cfgtew->u.cfgte64->dev_id)) &&
1190 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1191 sizeof(cfgtew->u.cfgte64->lun))) {
1192 return 1;
1193 }
1194 } else {
1195 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1196 res->target == cfgtew->u.cfgte->res_addr.target &&
1197 res->lun == cfgtew->u.cfgte->res_addr.lun)
1198 return 1;
1199 }
1200
1201 return 0;
1202 }
1203
1204 /**
1205 * __ipr_format_res_path - Format the resource path for printing.
1206 * @res_path: resource path
1207 * @buffer: buffer
1208 * @len: length of buffer provided
1209 *
1210 * Return value:
1211 * pointer to buffer
1212 **/
1213 static char *__ipr_format_res_path(u8 *res_path, char *buffer, int len)
1214 {
1215 int i;
1216 char *p = buffer;
1217
1218 *p = '\0';
1219 p += scnprintf(p, buffer + len - p, "%02X", res_path[0]);
1220 for (i = 1; res_path[i] != 0xff && i < IPR_RES_PATH_BYTES; i++)
1221 p += scnprintf(p, buffer + len - p, "-%02X", res_path[i]);
1222
1223 return buffer;
1224 }
1225
1226 /**
1227 * ipr_format_res_path - Format the resource path for printing.
1228 * @ioa_cfg: ioa config struct
1229 * @res_path: resource path
1230 * @buffer: buffer
1231 * @len: length of buffer provided
1232 *
1233 * Return value:
1234 * pointer to buffer
1235 **/
1236 static char *ipr_format_res_path(struct ipr_ioa_cfg *ioa_cfg,
1237 u8 *res_path, char *buffer, int len)
1238 {
1239 char *p = buffer;
1240
1241 *p = '\0';
1242 p += scnprintf(p, buffer + len - p, "%d/", ioa_cfg->host->host_no);
1243 __ipr_format_res_path(res_path, p, len - (p - buffer));
1244 return buffer;
1245 }
1246
1247 /**
1248 * ipr_update_res_entry - Update the resource entry.
1249 * @res: resource entry struct
1250 * @cfgtew: config table entry wrapper struct
1251 *
1252 * Return value:
1253 * none
1254 **/
1255 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1256 struct ipr_config_table_entry_wrapper *cfgtew)
1257 {
1258 char buffer[IPR_MAX_RES_PATH_LENGTH];
1259 int new_path = 0;
1260
1261 if (res->ioa_cfg->sis64) {
1262 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1263 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1264 res->type = cfgtew->u.cfgte64->res_type;
1265
1266 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1267 sizeof(struct ipr_std_inq_data));
1268
1269 res->qmodel = IPR_QUEUEING_MODEL64(res);
1270 res->res_handle = cfgtew->u.cfgte64->res_handle;
1271 res->dev_id = cfgtew->u.cfgte64->dev_id;
1272
1273 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1274 sizeof(res->dev_lun.scsi_lun));
1275
1276 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1277 sizeof(res->res_path))) {
1278 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1279 sizeof(res->res_path));
1280 new_path = 1;
1281 }
1282
1283 if (res->sdev && new_path)
1284 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1285 ipr_format_res_path(res->ioa_cfg,
1286 res->res_path, buffer, sizeof(buffer)));
1287 } else {
1288 res->flags = cfgtew->u.cfgte->flags;
1289 if (res->flags & IPR_IS_IOA_RESOURCE)
1290 res->type = IPR_RES_TYPE_IOAFP;
1291 else
1292 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1293
1294 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1295 sizeof(struct ipr_std_inq_data));
1296
1297 res->qmodel = IPR_QUEUEING_MODEL(res);
1298 res->res_handle = cfgtew->u.cfgte->res_handle;
1299 }
1300 }
1301
1302 /**
1303 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1304 * for the resource.
1305 * @res: resource entry struct
1306 *
1307 * Return value:
1308 * none
1309 **/
1310 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1311 {
1312 struct ipr_resource_entry *gscsi_res = NULL;
1313 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1314
1315 if (!ioa_cfg->sis64)
1316 return;
1317
1318 if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1319 clear_bit(res->target, ioa_cfg->array_ids);
1320 else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1321 clear_bit(res->target, ioa_cfg->vset_ids);
1322 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1323 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1324 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1325 return;
1326 clear_bit(res->target, ioa_cfg->target_ids);
1327
1328 } else if (res->bus == 0)
1329 clear_bit(res->target, ioa_cfg->target_ids);
1330 }
1331
1332 /**
1333 * ipr_handle_config_change - Handle a config change from the adapter
1334 * @ioa_cfg: ioa config struct
1335 * @hostrcb: hostrcb
1336 *
1337 * Return value:
1338 * none
1339 **/
1340 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1341 struct ipr_hostrcb *hostrcb)
1342 {
1343 struct ipr_resource_entry *res = NULL;
1344 struct ipr_config_table_entry_wrapper cfgtew;
1345 __be32 cc_res_handle;
1346
1347 u32 is_ndn = 1;
1348
1349 if (ioa_cfg->sis64) {
1350 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1351 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1352 } else {
1353 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1354 cc_res_handle = cfgtew.u.cfgte->res_handle;
1355 }
1356
1357 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1358 if (res->res_handle == cc_res_handle) {
1359 is_ndn = 0;
1360 break;
1361 }
1362 }
1363
1364 if (is_ndn) {
1365 if (list_empty(&ioa_cfg->free_res_q)) {
1366 ipr_send_hcam(ioa_cfg,
1367 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1368 hostrcb);
1369 return;
1370 }
1371
1372 res = list_entry(ioa_cfg->free_res_q.next,
1373 struct ipr_resource_entry, queue);
1374
1375 list_del(&res->queue);
1376 ipr_init_res_entry(res, &cfgtew);
1377 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1378 }
1379
1380 ipr_update_res_entry(res, &cfgtew);
1381
1382 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1383 if (res->sdev) {
1384 res->del_from_ml = 1;
1385 res->res_handle = IPR_INVALID_RES_HANDLE;
1386 schedule_work(&ioa_cfg->work_q);
1387 } else {
1388 ipr_clear_res_target(res);
1389 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1390 }
1391 } else if (!res->sdev || res->del_from_ml) {
1392 res->add_to_ml = 1;
1393 schedule_work(&ioa_cfg->work_q);
1394 }
1395
1396 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1397 }
1398
1399 /**
1400 * ipr_process_ccn - Op done function for a CCN.
1401 * @ipr_cmd: ipr command struct
1402 *
1403 * This function is the op done function for a configuration
1404 * change notification host controlled async from the adapter.
1405 *
1406 * Return value:
1407 * none
1408 **/
1409 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1410 {
1411 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1412 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1413 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1414
1415 list_del_init(&hostrcb->queue);
1416 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
1417
1418 if (ioasc) {
1419 if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
1420 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST)
1421 dev_err(&ioa_cfg->pdev->dev,
1422 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1423
1424 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1425 } else {
1426 ipr_handle_config_change(ioa_cfg, hostrcb);
1427 }
1428 }
1429
1430 /**
1431 * strip_whitespace - Strip and pad trailing whitespace.
1432 * @i: size of buffer
1433 * @buf: string to modify
1434 *
1435 * This function will strip all trailing whitespace and
1436 * NUL terminate the string.
1437 *
1438 **/
1439 static void strip_whitespace(int i, char *buf)
1440 {
1441 if (i < 1)
1442 return;
1443 i--;
1444 while (i && buf[i] == ' ')
1445 i--;
1446 buf[i+1] = '\0';
1447 }
1448
1449 /**
1450 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1451 * @prefix: string to print at start of printk
1452 * @hostrcb: hostrcb pointer
1453 * @vpd: vendor/product id/sn struct
1454 *
1455 * Return value:
1456 * none
1457 **/
1458 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1459 struct ipr_vpd *vpd)
1460 {
1461 char vendor_id[IPR_VENDOR_ID_LEN + 1];
1462 char product_id[IPR_PROD_ID_LEN + 1];
1463 char sn[IPR_SERIAL_NUM_LEN + 1];
1464
1465 memcpy(vendor_id, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1466 strip_whitespace(IPR_VENDOR_ID_LEN, vendor_id);
1467
1468 memcpy(product_id, vpd->vpids.product_id, IPR_PROD_ID_LEN);
1469 strip_whitespace(IPR_PROD_ID_LEN, product_id);
1470
1471 memcpy(sn, vpd->sn, IPR_SERIAL_NUM_LEN);
1472 strip_whitespace(IPR_SERIAL_NUM_LEN, sn);
1473
1474 ipr_hcam_err(hostrcb, "%s VPID/SN: %s %s %s\n", prefix,
1475 vendor_id, product_id, sn);
1476 }
1477
1478 /**
1479 * ipr_log_vpd - Log the passed VPD to the error log.
1480 * @vpd: vendor/product id/sn struct
1481 *
1482 * Return value:
1483 * none
1484 **/
1485 static void ipr_log_vpd(struct ipr_vpd *vpd)
1486 {
1487 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1488 + IPR_SERIAL_NUM_LEN];
1489
1490 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1491 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1492 IPR_PROD_ID_LEN);
1493 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1494 ipr_err("Vendor/Product ID: %s\n", buffer);
1495
1496 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1497 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1498 ipr_err(" Serial Number: %s\n", buffer);
1499 }
1500
1501 /**
1502 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1503 * @prefix: string to print at start of printk
1504 * @hostrcb: hostrcb pointer
1505 * @vpd: vendor/product id/sn/wwn struct
1506 *
1507 * Return value:
1508 * none
1509 **/
1510 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1511 struct ipr_ext_vpd *vpd)
1512 {
1513 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1514 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1515 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1516 }
1517
1518 /**
1519 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1520 * @vpd: vendor/product id/sn/wwn struct
1521 *
1522 * Return value:
1523 * none
1524 **/
1525 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1526 {
1527 ipr_log_vpd(&vpd->vpd);
1528 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1529 be32_to_cpu(vpd->wwid[1]));
1530 }
1531
1532 /**
1533 * ipr_log_enhanced_cache_error - Log a cache error.
1534 * @ioa_cfg: ioa config struct
1535 * @hostrcb: hostrcb struct
1536 *
1537 * Return value:
1538 * none
1539 **/
1540 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1541 struct ipr_hostrcb *hostrcb)
1542 {
1543 struct ipr_hostrcb_type_12_error *error;
1544
1545 if (ioa_cfg->sis64)
1546 error = &hostrcb->hcam.u.error64.u.type_12_error;
1547 else
1548 error = &hostrcb->hcam.u.error.u.type_12_error;
1549
1550 ipr_err("-----Current Configuration-----\n");
1551 ipr_err("Cache Directory Card Information:\n");
1552 ipr_log_ext_vpd(&error->ioa_vpd);
1553 ipr_err("Adapter Card Information:\n");
1554 ipr_log_ext_vpd(&error->cfc_vpd);
1555
1556 ipr_err("-----Expected Configuration-----\n");
1557 ipr_err("Cache Directory Card Information:\n");
1558 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1559 ipr_err("Adapter Card Information:\n");
1560 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1561
1562 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1563 be32_to_cpu(error->ioa_data[0]),
1564 be32_to_cpu(error->ioa_data[1]),
1565 be32_to_cpu(error->ioa_data[2]));
1566 }
1567
1568 /**
1569 * ipr_log_cache_error - Log a cache error.
1570 * @ioa_cfg: ioa config struct
1571 * @hostrcb: hostrcb struct
1572 *
1573 * Return value:
1574 * none
1575 **/
1576 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1577 struct ipr_hostrcb *hostrcb)
1578 {
1579 struct ipr_hostrcb_type_02_error *error =
1580 &hostrcb->hcam.u.error.u.type_02_error;
1581
1582 ipr_err("-----Current Configuration-----\n");
1583 ipr_err("Cache Directory Card Information:\n");
1584 ipr_log_vpd(&error->ioa_vpd);
1585 ipr_err("Adapter Card Information:\n");
1586 ipr_log_vpd(&error->cfc_vpd);
1587
1588 ipr_err("-----Expected Configuration-----\n");
1589 ipr_err("Cache Directory Card Information:\n");
1590 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1591 ipr_err("Adapter Card Information:\n");
1592 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1593
1594 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1595 be32_to_cpu(error->ioa_data[0]),
1596 be32_to_cpu(error->ioa_data[1]),
1597 be32_to_cpu(error->ioa_data[2]));
1598 }
1599
1600 /**
1601 * ipr_log_enhanced_config_error - Log a configuration error.
1602 * @ioa_cfg: ioa config struct
1603 * @hostrcb: hostrcb struct
1604 *
1605 * Return value:
1606 * none
1607 **/
1608 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1609 struct ipr_hostrcb *hostrcb)
1610 {
1611 int errors_logged, i;
1612 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1613 struct ipr_hostrcb_type_13_error *error;
1614
1615 error = &hostrcb->hcam.u.error.u.type_13_error;
1616 errors_logged = be32_to_cpu(error->errors_logged);
1617
1618 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1619 be32_to_cpu(error->errors_detected), errors_logged);
1620
1621 dev_entry = error->dev;
1622
1623 for (i = 0; i < errors_logged; i++, dev_entry++) {
1624 ipr_err_separator;
1625
1626 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1627 ipr_log_ext_vpd(&dev_entry->vpd);
1628
1629 ipr_err("-----New Device Information-----\n");
1630 ipr_log_ext_vpd(&dev_entry->new_vpd);
1631
1632 ipr_err("Cache Directory Card Information:\n");
1633 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1634
1635 ipr_err("Adapter Card Information:\n");
1636 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1637 }
1638 }
1639
1640 /**
1641 * ipr_log_sis64_config_error - Log a device error.
1642 * @ioa_cfg: ioa config struct
1643 * @hostrcb: hostrcb struct
1644 *
1645 * Return value:
1646 * none
1647 **/
1648 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1649 struct ipr_hostrcb *hostrcb)
1650 {
1651 int errors_logged, i;
1652 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1653 struct ipr_hostrcb_type_23_error *error;
1654 char buffer[IPR_MAX_RES_PATH_LENGTH];
1655
1656 error = &hostrcb->hcam.u.error64.u.type_23_error;
1657 errors_logged = be32_to_cpu(error->errors_logged);
1658
1659 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1660 be32_to_cpu(error->errors_detected), errors_logged);
1661
1662 dev_entry = error->dev;
1663
1664 for (i = 0; i < errors_logged; i++, dev_entry++) {
1665 ipr_err_separator;
1666
1667 ipr_err("Device %d : %s", i + 1,
1668 __ipr_format_res_path(dev_entry->res_path,
1669 buffer, sizeof(buffer)));
1670 ipr_log_ext_vpd(&dev_entry->vpd);
1671
1672 ipr_err("-----New Device Information-----\n");
1673 ipr_log_ext_vpd(&dev_entry->new_vpd);
1674
1675 ipr_err("Cache Directory Card Information:\n");
1676 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1677
1678 ipr_err("Adapter Card Information:\n");
1679 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1680 }
1681 }
1682
1683 /**
1684 * ipr_log_config_error - Log a configuration error.
1685 * @ioa_cfg: ioa config struct
1686 * @hostrcb: hostrcb struct
1687 *
1688 * Return value:
1689 * none
1690 **/
1691 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1692 struct ipr_hostrcb *hostrcb)
1693 {
1694 int errors_logged, i;
1695 struct ipr_hostrcb_device_data_entry *dev_entry;
1696 struct ipr_hostrcb_type_03_error *error;
1697
1698 error = &hostrcb->hcam.u.error.u.type_03_error;
1699 errors_logged = be32_to_cpu(error->errors_logged);
1700
1701 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1702 be32_to_cpu(error->errors_detected), errors_logged);
1703
1704 dev_entry = error->dev;
1705
1706 for (i = 0; i < errors_logged; i++, dev_entry++) {
1707 ipr_err_separator;
1708
1709 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1710 ipr_log_vpd(&dev_entry->vpd);
1711
1712 ipr_err("-----New Device Information-----\n");
1713 ipr_log_vpd(&dev_entry->new_vpd);
1714
1715 ipr_err("Cache Directory Card Information:\n");
1716 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1717
1718 ipr_err("Adapter Card Information:\n");
1719 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1720
1721 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1722 be32_to_cpu(dev_entry->ioa_data[0]),
1723 be32_to_cpu(dev_entry->ioa_data[1]),
1724 be32_to_cpu(dev_entry->ioa_data[2]),
1725 be32_to_cpu(dev_entry->ioa_data[3]),
1726 be32_to_cpu(dev_entry->ioa_data[4]));
1727 }
1728 }
1729
1730 /**
1731 * ipr_log_enhanced_array_error - Log an array configuration error.
1732 * @ioa_cfg: ioa config struct
1733 * @hostrcb: hostrcb struct
1734 *
1735 * Return value:
1736 * none
1737 **/
1738 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1739 struct ipr_hostrcb *hostrcb)
1740 {
1741 int i, num_entries;
1742 struct ipr_hostrcb_type_14_error *error;
1743 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1744 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1745
1746 error = &hostrcb->hcam.u.error.u.type_14_error;
1747
1748 ipr_err_separator;
1749
1750 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1751 error->protection_level,
1752 ioa_cfg->host->host_no,
1753 error->last_func_vset_res_addr.bus,
1754 error->last_func_vset_res_addr.target,
1755 error->last_func_vset_res_addr.lun);
1756
1757 ipr_err_separator;
1758
1759 array_entry = error->array_member;
1760 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1761 ARRAY_SIZE(error->array_member));
1762
1763 for (i = 0; i < num_entries; i++, array_entry++) {
1764 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1765 continue;
1766
1767 if (be32_to_cpu(error->exposed_mode_adn) == i)
1768 ipr_err("Exposed Array Member %d:\n", i);
1769 else
1770 ipr_err("Array Member %d:\n", i);
1771
1772 ipr_log_ext_vpd(&array_entry->vpd);
1773 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1774 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1775 "Expected Location");
1776
1777 ipr_err_separator;
1778 }
1779 }
1780
1781 /**
1782 * ipr_log_array_error - Log an array configuration error.
1783 * @ioa_cfg: ioa config struct
1784 * @hostrcb: hostrcb struct
1785 *
1786 * Return value:
1787 * none
1788 **/
1789 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1790 struct ipr_hostrcb *hostrcb)
1791 {
1792 int i;
1793 struct ipr_hostrcb_type_04_error *error;
1794 struct ipr_hostrcb_array_data_entry *array_entry;
1795 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1796
1797 error = &hostrcb->hcam.u.error.u.type_04_error;
1798
1799 ipr_err_separator;
1800
1801 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1802 error->protection_level,
1803 ioa_cfg->host->host_no,
1804 error->last_func_vset_res_addr.bus,
1805 error->last_func_vset_res_addr.target,
1806 error->last_func_vset_res_addr.lun);
1807
1808 ipr_err_separator;
1809
1810 array_entry = error->array_member;
1811
1812 for (i = 0; i < 18; i++) {
1813 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1814 continue;
1815
1816 if (be32_to_cpu(error->exposed_mode_adn) == i)
1817 ipr_err("Exposed Array Member %d:\n", i);
1818 else
1819 ipr_err("Array Member %d:\n", i);
1820
1821 ipr_log_vpd(&array_entry->vpd);
1822
1823 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1824 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1825 "Expected Location");
1826
1827 ipr_err_separator;
1828
1829 if (i == 9)
1830 array_entry = error->array_member2;
1831 else
1832 array_entry++;
1833 }
1834 }
1835
1836 /**
1837 * ipr_log_hex_data - Log additional hex IOA error data.
1838 * @ioa_cfg: ioa config struct
1839 * @data: IOA error data
1840 * @len: data length
1841 *
1842 * Return value:
1843 * none
1844 **/
1845 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, __be32 *data, int len)
1846 {
1847 int i;
1848
1849 if (len == 0)
1850 return;
1851
1852 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1853 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1854
1855 for (i = 0; i < len / 4; i += 4) {
1856 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1857 be32_to_cpu(data[i]),
1858 be32_to_cpu(data[i+1]),
1859 be32_to_cpu(data[i+2]),
1860 be32_to_cpu(data[i+3]));
1861 }
1862 }
1863
1864 /**
1865 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1866 * @ioa_cfg: ioa config struct
1867 * @hostrcb: hostrcb struct
1868 *
1869 * Return value:
1870 * none
1871 **/
1872 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1873 struct ipr_hostrcb *hostrcb)
1874 {
1875 struct ipr_hostrcb_type_17_error *error;
1876
1877 if (ioa_cfg->sis64)
1878 error = &hostrcb->hcam.u.error64.u.type_17_error;
1879 else
1880 error = &hostrcb->hcam.u.error.u.type_17_error;
1881
1882 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1883 strim(error->failure_reason);
1884
1885 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1886 be32_to_cpu(hostrcb->hcam.u.error.prc));
1887 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1888 ipr_log_hex_data(ioa_cfg, error->data,
1889 be32_to_cpu(hostrcb->hcam.length) -
1890 (offsetof(struct ipr_hostrcb_error, u) +
1891 offsetof(struct ipr_hostrcb_type_17_error, data)));
1892 }
1893
1894 /**
1895 * ipr_log_dual_ioa_error - Log a dual adapter error.
1896 * @ioa_cfg: ioa config struct
1897 * @hostrcb: hostrcb struct
1898 *
1899 * Return value:
1900 * none
1901 **/
1902 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1903 struct ipr_hostrcb *hostrcb)
1904 {
1905 struct ipr_hostrcb_type_07_error *error;
1906
1907 error = &hostrcb->hcam.u.error.u.type_07_error;
1908 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1909 strim(error->failure_reason);
1910
1911 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1912 be32_to_cpu(hostrcb->hcam.u.error.prc));
1913 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1914 ipr_log_hex_data(ioa_cfg, error->data,
1915 be32_to_cpu(hostrcb->hcam.length) -
1916 (offsetof(struct ipr_hostrcb_error, u) +
1917 offsetof(struct ipr_hostrcb_type_07_error, data)));
1918 }
1919
1920 static const struct {
1921 u8 active;
1922 char *desc;
1923 } path_active_desc[] = {
1924 { IPR_PATH_NO_INFO, "Path" },
1925 { IPR_PATH_ACTIVE, "Active path" },
1926 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1927 };
1928
1929 static const struct {
1930 u8 state;
1931 char *desc;
1932 } path_state_desc[] = {
1933 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1934 { IPR_PATH_HEALTHY, "is healthy" },
1935 { IPR_PATH_DEGRADED, "is degraded" },
1936 { IPR_PATH_FAILED, "is failed" }
1937 };
1938
1939 /**
1940 * ipr_log_fabric_path - Log a fabric path error
1941 * @hostrcb: hostrcb struct
1942 * @fabric: fabric descriptor
1943 *
1944 * Return value:
1945 * none
1946 **/
1947 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1948 struct ipr_hostrcb_fabric_desc *fabric)
1949 {
1950 int i, j;
1951 u8 path_state = fabric->path_state;
1952 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1953 u8 state = path_state & IPR_PATH_STATE_MASK;
1954
1955 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1956 if (path_active_desc[i].active != active)
1957 continue;
1958
1959 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1960 if (path_state_desc[j].state != state)
1961 continue;
1962
1963 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1964 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1965 path_active_desc[i].desc, path_state_desc[j].desc,
1966 fabric->ioa_port);
1967 } else if (fabric->cascaded_expander == 0xff) {
1968 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1969 path_active_desc[i].desc, path_state_desc[j].desc,
1970 fabric->ioa_port, fabric->phy);
1971 } else if (fabric->phy == 0xff) {
1972 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1973 path_active_desc[i].desc, path_state_desc[j].desc,
1974 fabric->ioa_port, fabric->cascaded_expander);
1975 } else {
1976 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1977 path_active_desc[i].desc, path_state_desc[j].desc,
1978 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1979 }
1980 return;
1981 }
1982 }
1983
1984 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1985 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1986 }
1987
1988 /**
1989 * ipr_log64_fabric_path - Log a fabric path error
1990 * @hostrcb: hostrcb struct
1991 * @fabric: fabric descriptor
1992 *
1993 * Return value:
1994 * none
1995 **/
1996 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
1997 struct ipr_hostrcb64_fabric_desc *fabric)
1998 {
1999 int i, j;
2000 u8 path_state = fabric->path_state;
2001 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2002 u8 state = path_state & IPR_PATH_STATE_MASK;
2003 char buffer[IPR_MAX_RES_PATH_LENGTH];
2004
2005 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2006 if (path_active_desc[i].active != active)
2007 continue;
2008
2009 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2010 if (path_state_desc[j].state != state)
2011 continue;
2012
2013 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
2014 path_active_desc[i].desc, path_state_desc[j].desc,
2015 ipr_format_res_path(hostrcb->ioa_cfg,
2016 fabric->res_path,
2017 buffer, sizeof(buffer)));
2018 return;
2019 }
2020 }
2021
2022 ipr_err("Path state=%02X Resource Path=%s\n", path_state,
2023 ipr_format_res_path(hostrcb->ioa_cfg, fabric->res_path,
2024 buffer, sizeof(buffer)));
2025 }
2026
2027 static const struct {
2028 u8 type;
2029 char *desc;
2030 } path_type_desc[] = {
2031 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
2032 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
2033 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
2034 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
2035 };
2036
2037 static const struct {
2038 u8 status;
2039 char *desc;
2040 } path_status_desc[] = {
2041 { IPR_PATH_CFG_NO_PROB, "Functional" },
2042 { IPR_PATH_CFG_DEGRADED, "Degraded" },
2043 { IPR_PATH_CFG_FAILED, "Failed" },
2044 { IPR_PATH_CFG_SUSPECT, "Suspect" },
2045 { IPR_PATH_NOT_DETECTED, "Missing" },
2046 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
2047 };
2048
2049 static const char *link_rate[] = {
2050 "unknown",
2051 "disabled",
2052 "phy reset problem",
2053 "spinup hold",
2054 "port selector",
2055 "unknown",
2056 "unknown",
2057 "unknown",
2058 "1.5Gbps",
2059 "3.0Gbps",
2060 "unknown",
2061 "unknown",
2062 "unknown",
2063 "unknown",
2064 "unknown",
2065 "unknown"
2066 };
2067
2068 /**
2069 * ipr_log_path_elem - Log a fabric path element.
2070 * @hostrcb: hostrcb struct
2071 * @cfg: fabric path element struct
2072 *
2073 * Return value:
2074 * none
2075 **/
2076 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
2077 struct ipr_hostrcb_config_element *cfg)
2078 {
2079 int i, j;
2080 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2081 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2082
2083 if (type == IPR_PATH_CFG_NOT_EXIST)
2084 return;
2085
2086 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2087 if (path_type_desc[i].type != type)
2088 continue;
2089
2090 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2091 if (path_status_desc[j].status != status)
2092 continue;
2093
2094 if (type == IPR_PATH_CFG_IOA_PORT) {
2095 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2096 path_status_desc[j].desc, path_type_desc[i].desc,
2097 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2098 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2099 } else {
2100 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2101 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2102 path_status_desc[j].desc, path_type_desc[i].desc,
2103 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2104 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2105 } else if (cfg->cascaded_expander == 0xff) {
2106 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2107 "WWN=%08X%08X\n", path_status_desc[j].desc,
2108 path_type_desc[i].desc, cfg->phy,
2109 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2110 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2111 } else if (cfg->phy == 0xff) {
2112 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2113 "WWN=%08X%08X\n", path_status_desc[j].desc,
2114 path_type_desc[i].desc, cfg->cascaded_expander,
2115 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2116 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2117 } else {
2118 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2119 "WWN=%08X%08X\n", path_status_desc[j].desc,
2120 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2121 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2122 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2123 }
2124 }
2125 return;
2126 }
2127 }
2128
2129 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2130 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2131 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2132 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2133 }
2134
2135 /**
2136 * ipr_log64_path_elem - Log a fabric path element.
2137 * @hostrcb: hostrcb struct
2138 * @cfg: fabric path element struct
2139 *
2140 * Return value:
2141 * none
2142 **/
2143 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2144 struct ipr_hostrcb64_config_element *cfg)
2145 {
2146 int i, j;
2147 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2148 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2149 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2150 char buffer[IPR_MAX_RES_PATH_LENGTH];
2151
2152 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2153 return;
2154
2155 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2156 if (path_type_desc[i].type != type)
2157 continue;
2158
2159 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2160 if (path_status_desc[j].status != status)
2161 continue;
2162
2163 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2164 path_status_desc[j].desc, path_type_desc[i].desc,
2165 ipr_format_res_path(hostrcb->ioa_cfg,
2166 cfg->res_path, buffer, sizeof(buffer)),
2167 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2168 be32_to_cpu(cfg->wwid[0]),
2169 be32_to_cpu(cfg->wwid[1]));
2170 return;
2171 }
2172 }
2173 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2174 "WWN=%08X%08X\n", cfg->type_status,
2175 ipr_format_res_path(hostrcb->ioa_cfg,
2176 cfg->res_path, buffer, sizeof(buffer)),
2177 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2178 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2179 }
2180
2181 /**
2182 * ipr_log_fabric_error - Log a fabric error.
2183 * @ioa_cfg: ioa config struct
2184 * @hostrcb: hostrcb struct
2185 *
2186 * Return value:
2187 * none
2188 **/
2189 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2190 struct ipr_hostrcb *hostrcb)
2191 {
2192 struct ipr_hostrcb_type_20_error *error;
2193 struct ipr_hostrcb_fabric_desc *fabric;
2194 struct ipr_hostrcb_config_element *cfg;
2195 int i, add_len;
2196
2197 error = &hostrcb->hcam.u.error.u.type_20_error;
2198 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2199 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2200
2201 add_len = be32_to_cpu(hostrcb->hcam.length) -
2202 (offsetof(struct ipr_hostrcb_error, u) +
2203 offsetof(struct ipr_hostrcb_type_20_error, desc));
2204
2205 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2206 ipr_log_fabric_path(hostrcb, fabric);
2207 for_each_fabric_cfg(fabric, cfg)
2208 ipr_log_path_elem(hostrcb, cfg);
2209
2210 add_len -= be16_to_cpu(fabric->length);
2211 fabric = (struct ipr_hostrcb_fabric_desc *)
2212 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2213 }
2214
2215 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2216 }
2217
2218 /**
2219 * ipr_log_sis64_array_error - Log a sis64 array error.
2220 * @ioa_cfg: ioa config struct
2221 * @hostrcb: hostrcb struct
2222 *
2223 * Return value:
2224 * none
2225 **/
2226 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2227 struct ipr_hostrcb *hostrcb)
2228 {
2229 int i, num_entries;
2230 struct ipr_hostrcb_type_24_error *error;
2231 struct ipr_hostrcb64_array_data_entry *array_entry;
2232 char buffer[IPR_MAX_RES_PATH_LENGTH];
2233 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2234
2235 error = &hostrcb->hcam.u.error64.u.type_24_error;
2236
2237 ipr_err_separator;
2238
2239 ipr_err("RAID %s Array Configuration: %s\n",
2240 error->protection_level,
2241 ipr_format_res_path(ioa_cfg, error->last_res_path,
2242 buffer, sizeof(buffer)));
2243
2244 ipr_err_separator;
2245
2246 array_entry = error->array_member;
2247 num_entries = min_t(u32, error->num_entries,
2248 ARRAY_SIZE(error->array_member));
2249
2250 for (i = 0; i < num_entries; i++, array_entry++) {
2251
2252 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2253 continue;
2254
2255 if (error->exposed_mode_adn == i)
2256 ipr_err("Exposed Array Member %d:\n", i);
2257 else
2258 ipr_err("Array Member %d:\n", i);
2259
2260 ipr_err("Array Member %d:\n", i);
2261 ipr_log_ext_vpd(&array_entry->vpd);
2262 ipr_err("Current Location: %s\n",
2263 ipr_format_res_path(ioa_cfg, array_entry->res_path,
2264 buffer, sizeof(buffer)));
2265 ipr_err("Expected Location: %s\n",
2266 ipr_format_res_path(ioa_cfg,
2267 array_entry->expected_res_path,
2268 buffer, sizeof(buffer)));
2269
2270 ipr_err_separator;
2271 }
2272 }
2273
2274 /**
2275 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2276 * @ioa_cfg: ioa config struct
2277 * @hostrcb: hostrcb struct
2278 *
2279 * Return value:
2280 * none
2281 **/
2282 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2283 struct ipr_hostrcb *hostrcb)
2284 {
2285 struct ipr_hostrcb_type_30_error *error;
2286 struct ipr_hostrcb64_fabric_desc *fabric;
2287 struct ipr_hostrcb64_config_element *cfg;
2288 int i, add_len;
2289
2290 error = &hostrcb->hcam.u.error64.u.type_30_error;
2291
2292 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2293 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2294
2295 add_len = be32_to_cpu(hostrcb->hcam.length) -
2296 (offsetof(struct ipr_hostrcb64_error, u) +
2297 offsetof(struct ipr_hostrcb_type_30_error, desc));
2298
2299 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2300 ipr_log64_fabric_path(hostrcb, fabric);
2301 for_each_fabric_cfg(fabric, cfg)
2302 ipr_log64_path_elem(hostrcb, cfg);
2303
2304 add_len -= be16_to_cpu(fabric->length);
2305 fabric = (struct ipr_hostrcb64_fabric_desc *)
2306 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2307 }
2308
2309 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2310 }
2311
2312 /**
2313 * ipr_log_sis64_service_required_error - Log a sis64 service required error.
2314 * @ioa_cfg: ioa config struct
2315 * @hostrcb: hostrcb struct
2316 *
2317 * Return value:
2318 * none
2319 **/
2320 static void ipr_log_sis64_service_required_error(struct ipr_ioa_cfg *ioa_cfg,
2321 struct ipr_hostrcb *hostrcb)
2322 {
2323 struct ipr_hostrcb_type_41_error *error;
2324
2325 error = &hostrcb->hcam.u.error64.u.type_41_error;
2326
2327 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2328 ipr_err("Primary Failure Reason: %s\n", error->failure_reason);
2329 ipr_log_hex_data(ioa_cfg, error->data,
2330 be32_to_cpu(hostrcb->hcam.length) -
2331 (offsetof(struct ipr_hostrcb_error, u) +
2332 offsetof(struct ipr_hostrcb_type_41_error, data)));
2333 }
2334 /**
2335 * ipr_log_generic_error - Log an adapter error.
2336 * @ioa_cfg: ioa config struct
2337 * @hostrcb: hostrcb struct
2338 *
2339 * Return value:
2340 * none
2341 **/
2342 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2343 struct ipr_hostrcb *hostrcb)
2344 {
2345 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2346 be32_to_cpu(hostrcb->hcam.length));
2347 }
2348
2349 /**
2350 * ipr_log_sis64_device_error - Log a cache error.
2351 * @ioa_cfg: ioa config struct
2352 * @hostrcb: hostrcb struct
2353 *
2354 * Return value:
2355 * none
2356 **/
2357 static void ipr_log_sis64_device_error(struct ipr_ioa_cfg *ioa_cfg,
2358 struct ipr_hostrcb *hostrcb)
2359 {
2360 struct ipr_hostrcb_type_21_error *error;
2361 char buffer[IPR_MAX_RES_PATH_LENGTH];
2362
2363 error = &hostrcb->hcam.u.error64.u.type_21_error;
2364
2365 ipr_err("-----Failing Device Information-----\n");
2366 ipr_err("World Wide Unique ID: %08X%08X%08X%08X\n",
2367 be32_to_cpu(error->wwn[0]), be32_to_cpu(error->wwn[1]),
2368 be32_to_cpu(error->wwn[2]), be32_to_cpu(error->wwn[3]));
2369 ipr_err("Device Resource Path: %s\n",
2370 __ipr_format_res_path(error->res_path,
2371 buffer, sizeof(buffer)));
2372 error->primary_problem_desc[sizeof(error->primary_problem_desc) - 1] = '\0';
2373 error->second_problem_desc[sizeof(error->second_problem_desc) - 1] = '\0';
2374 ipr_err("Primary Problem Description: %s\n", error->primary_problem_desc);
2375 ipr_err("Secondary Problem Description: %s\n", error->second_problem_desc);
2376 ipr_err("SCSI Sense Data:\n");
2377 ipr_log_hex_data(ioa_cfg, error->sense_data, sizeof(error->sense_data));
2378 ipr_err("SCSI Command Descriptor Block: \n");
2379 ipr_log_hex_data(ioa_cfg, error->cdb, sizeof(error->cdb));
2380
2381 ipr_err("Additional IOA Data:\n");
2382 ipr_log_hex_data(ioa_cfg, error->ioa_data, be32_to_cpu(error->length_of_error));
2383 }
2384
2385 /**
2386 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2387 * @ioasc: IOASC
2388 *
2389 * This function will return the index of into the ipr_error_table
2390 * for the specified IOASC. If the IOASC is not in the table,
2391 * 0 will be returned, which points to the entry used for unknown errors.
2392 *
2393 * Return value:
2394 * index into the ipr_error_table
2395 **/
2396 static u32 ipr_get_error(u32 ioasc)
2397 {
2398 int i;
2399
2400 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2401 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2402 return i;
2403
2404 return 0;
2405 }
2406
2407 /**
2408 * ipr_handle_log_data - Log an adapter error.
2409 * @ioa_cfg: ioa config struct
2410 * @hostrcb: hostrcb struct
2411 *
2412 * This function logs an adapter error to the system.
2413 *
2414 * Return value:
2415 * none
2416 **/
2417 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2418 struct ipr_hostrcb *hostrcb)
2419 {
2420 u32 ioasc;
2421 int error_index;
2422 struct ipr_hostrcb_type_21_error *error;
2423
2424 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2425 return;
2426
2427 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2428 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2429
2430 if (ioa_cfg->sis64)
2431 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2432 else
2433 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2434
2435 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2436 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2437 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2438 scsi_report_bus_reset(ioa_cfg->host,
2439 hostrcb->hcam.u.error.fd_res_addr.bus);
2440 }
2441
2442 error_index = ipr_get_error(ioasc);
2443
2444 if (!ipr_error_table[error_index].log_hcam)
2445 return;
2446
2447 if (ioasc == IPR_IOASC_HW_CMD_FAILED &&
2448 hostrcb->hcam.overlay_id == IPR_HOST_RCB_OVERLAY_ID_21) {
2449 error = &hostrcb->hcam.u.error64.u.type_21_error;
2450
2451 if (((be32_to_cpu(error->sense_data[0]) & 0x0000ff00) >> 8) == ILLEGAL_REQUEST &&
2452 ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
2453 return;
2454 }
2455
2456 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2457
2458 /* Set indication we have logged an error */
2459 ioa_cfg->errors_logged++;
2460
2461 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2462 return;
2463 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2464 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2465
2466 switch (hostrcb->hcam.overlay_id) {
2467 case IPR_HOST_RCB_OVERLAY_ID_2:
2468 ipr_log_cache_error(ioa_cfg, hostrcb);
2469 break;
2470 case IPR_HOST_RCB_OVERLAY_ID_3:
2471 ipr_log_config_error(ioa_cfg, hostrcb);
2472 break;
2473 case IPR_HOST_RCB_OVERLAY_ID_4:
2474 case IPR_HOST_RCB_OVERLAY_ID_6:
2475 ipr_log_array_error(ioa_cfg, hostrcb);
2476 break;
2477 case IPR_HOST_RCB_OVERLAY_ID_7:
2478 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2479 break;
2480 case IPR_HOST_RCB_OVERLAY_ID_12:
2481 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2482 break;
2483 case IPR_HOST_RCB_OVERLAY_ID_13:
2484 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2485 break;
2486 case IPR_HOST_RCB_OVERLAY_ID_14:
2487 case IPR_HOST_RCB_OVERLAY_ID_16:
2488 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2489 break;
2490 case IPR_HOST_RCB_OVERLAY_ID_17:
2491 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2492 break;
2493 case IPR_HOST_RCB_OVERLAY_ID_20:
2494 ipr_log_fabric_error(ioa_cfg, hostrcb);
2495 break;
2496 case IPR_HOST_RCB_OVERLAY_ID_21:
2497 ipr_log_sis64_device_error(ioa_cfg, hostrcb);
2498 break;
2499 case IPR_HOST_RCB_OVERLAY_ID_23:
2500 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2501 break;
2502 case IPR_HOST_RCB_OVERLAY_ID_24:
2503 case IPR_HOST_RCB_OVERLAY_ID_26:
2504 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2505 break;
2506 case IPR_HOST_RCB_OVERLAY_ID_30:
2507 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2508 break;
2509 case IPR_HOST_RCB_OVERLAY_ID_41:
2510 ipr_log_sis64_service_required_error(ioa_cfg, hostrcb);
2511 break;
2512 case IPR_HOST_RCB_OVERLAY_ID_1:
2513 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2514 default:
2515 ipr_log_generic_error(ioa_cfg, hostrcb);
2516 break;
2517 }
2518 }
2519
2520 static struct ipr_hostrcb *ipr_get_free_hostrcb(struct ipr_ioa_cfg *ioa)
2521 {
2522 struct ipr_hostrcb *hostrcb;
2523
2524 hostrcb = list_first_entry_or_null(&ioa->hostrcb_free_q,
2525 struct ipr_hostrcb, queue);
2526
2527 if (unlikely(!hostrcb)) {
2528 dev_info(&ioa->pdev->dev, "Reclaiming async error buffers.");
2529 hostrcb = list_first_entry_or_null(&ioa->hostrcb_report_q,
2530 struct ipr_hostrcb, queue);
2531 }
2532
2533 list_del_init(&hostrcb->queue);
2534 return hostrcb;
2535 }
2536
2537 /**
2538 * ipr_process_error - Op done function for an adapter error log.
2539 * @ipr_cmd: ipr command struct
2540 *
2541 * This function is the op done function for an error log host
2542 * controlled async from the adapter. It will log the error and
2543 * send the HCAM back to the adapter.
2544 *
2545 * Return value:
2546 * none
2547 **/
2548 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2549 {
2550 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2551 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2552 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2553 u32 fd_ioasc;
2554
2555 if (ioa_cfg->sis64)
2556 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2557 else
2558 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2559
2560 list_del_init(&hostrcb->queue);
2561 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
2562
2563 if (!ioasc) {
2564 ipr_handle_log_data(ioa_cfg, hostrcb);
2565 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2566 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2567 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
2568 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) {
2569 dev_err(&ioa_cfg->pdev->dev,
2570 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2571 }
2572
2573 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_report_q);
2574 schedule_work(&ioa_cfg->work_q);
2575 hostrcb = ipr_get_free_hostrcb(ioa_cfg);
2576
2577 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2578 }
2579
2580 /**
2581 * ipr_timeout - An internally generated op has timed out.
2582 * @t: Timer context used to fetch ipr command struct
2583 *
2584 * This function blocks host requests and initiates an
2585 * adapter reset.
2586 *
2587 * Return value:
2588 * none
2589 **/
2590 static void ipr_timeout(struct timer_list *t)
2591 {
2592 struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
2593 unsigned long lock_flags = 0;
2594 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2595
2596 ENTER;
2597 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2598
2599 ioa_cfg->errors_logged++;
2600 dev_err(&ioa_cfg->pdev->dev,
2601 "Adapter being reset due to command timeout.\n");
2602
2603 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2604 ioa_cfg->sdt_state = GET_DUMP;
2605
2606 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2607 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2608
2609 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2610 LEAVE;
2611 }
2612
2613 /**
2614 * ipr_oper_timeout - Adapter timed out transitioning to operational
2615 * @t: Timer context used to fetch ipr command struct
2616 *
2617 * This function blocks host requests and initiates an
2618 * adapter reset.
2619 *
2620 * Return value:
2621 * none
2622 **/
2623 static void ipr_oper_timeout(struct timer_list *t)
2624 {
2625 struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
2626 unsigned long lock_flags = 0;
2627 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2628
2629 ENTER;
2630 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2631
2632 ioa_cfg->errors_logged++;
2633 dev_err(&ioa_cfg->pdev->dev,
2634 "Adapter timed out transitioning to operational.\n");
2635
2636 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2637 ioa_cfg->sdt_state = GET_DUMP;
2638
2639 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2640 if (ipr_fastfail)
2641 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2642 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2643 }
2644
2645 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2646 LEAVE;
2647 }
2648
2649 /**
2650 * ipr_find_ses_entry - Find matching SES in SES table
2651 * @res: resource entry struct of SES
2652 *
2653 * Return value:
2654 * pointer to SES table entry / NULL on failure
2655 **/
2656 static const struct ipr_ses_table_entry *
2657 ipr_find_ses_entry(struct ipr_resource_entry *res)
2658 {
2659 int i, j, matches;
2660 struct ipr_std_inq_vpids *vpids;
2661 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2662
2663 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2664 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2665 if (ste->compare_product_id_byte[j] == 'X') {
2666 vpids = &res->std_inq_data.vpids;
2667 if (vpids->product_id[j] == ste->product_id[j])
2668 matches++;
2669 else
2670 break;
2671 } else
2672 matches++;
2673 }
2674
2675 if (matches == IPR_PROD_ID_LEN)
2676 return ste;
2677 }
2678
2679 return NULL;
2680 }
2681
2682 /**
2683 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2684 * @ioa_cfg: ioa config struct
2685 * @bus: SCSI bus
2686 * @bus_width: bus width
2687 *
2688 * Return value:
2689 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2690 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2691 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2692 * max 160MHz = max 320MB/sec).
2693 **/
2694 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2695 {
2696 struct ipr_resource_entry *res;
2697 const struct ipr_ses_table_entry *ste;
2698 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2699
2700 /* Loop through each config table entry in the config table buffer */
2701 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2702 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2703 continue;
2704
2705 if (bus != res->bus)
2706 continue;
2707
2708 if (!(ste = ipr_find_ses_entry(res)))
2709 continue;
2710
2711 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2712 }
2713
2714 return max_xfer_rate;
2715 }
2716
2717 /**
2718 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2719 * @ioa_cfg: ioa config struct
2720 * @max_delay: max delay in micro-seconds to wait
2721 *
2722 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2723 *
2724 * Return value:
2725 * 0 on success / other on failure
2726 **/
2727 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2728 {
2729 volatile u32 pcii_reg;
2730 int delay = 1;
2731
2732 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2733 while (delay < max_delay) {
2734 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2735
2736 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2737 return 0;
2738
2739 /* udelay cannot be used if delay is more than a few milliseconds */
2740 if ((delay / 1000) > MAX_UDELAY_MS)
2741 mdelay(delay / 1000);
2742 else
2743 udelay(delay);
2744
2745 delay += delay;
2746 }
2747 return -EIO;
2748 }
2749
2750 /**
2751 * ipr_get_sis64_dump_data_section - Dump IOA memory
2752 * @ioa_cfg: ioa config struct
2753 * @start_addr: adapter address to dump
2754 * @dest: destination kernel buffer
2755 * @length_in_words: length to dump in 4 byte words
2756 *
2757 * Return value:
2758 * 0 on success
2759 **/
2760 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2761 u32 start_addr,
2762 __be32 *dest, u32 length_in_words)
2763 {
2764 int i;
2765
2766 for (i = 0; i < length_in_words; i++) {
2767 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2768 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2769 dest++;
2770 }
2771
2772 return 0;
2773 }
2774
2775 /**
2776 * ipr_get_ldump_data_section - Dump IOA memory
2777 * @ioa_cfg: ioa config struct
2778 * @start_addr: adapter address to dump
2779 * @dest: destination kernel buffer
2780 * @length_in_words: length to dump in 4 byte words
2781 *
2782 * Return value:
2783 * 0 on success / -EIO on failure
2784 **/
2785 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2786 u32 start_addr,
2787 __be32 *dest, u32 length_in_words)
2788 {
2789 volatile u32 temp_pcii_reg;
2790 int i, delay = 0;
2791
2792 if (ioa_cfg->sis64)
2793 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2794 dest, length_in_words);
2795
2796 /* Write IOA interrupt reg starting LDUMP state */
2797 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2798 ioa_cfg->regs.set_uproc_interrupt_reg32);
2799
2800 /* Wait for IO debug acknowledge */
2801 if (ipr_wait_iodbg_ack(ioa_cfg,
2802 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2803 dev_err(&ioa_cfg->pdev->dev,
2804 "IOA dump long data transfer timeout\n");
2805 return -EIO;
2806 }
2807
2808 /* Signal LDUMP interlocked - clear IO debug ack */
2809 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2810 ioa_cfg->regs.clr_interrupt_reg);
2811
2812 /* Write Mailbox with starting address */
2813 writel(start_addr, ioa_cfg->ioa_mailbox);
2814
2815 /* Signal address valid - clear IOA Reset alert */
2816 writel(IPR_UPROCI_RESET_ALERT,
2817 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2818
2819 for (i = 0; i < length_in_words; i++) {
2820 /* Wait for IO debug acknowledge */
2821 if (ipr_wait_iodbg_ack(ioa_cfg,
2822 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2823 dev_err(&ioa_cfg->pdev->dev,
2824 "IOA dump short data transfer timeout\n");
2825 return -EIO;
2826 }
2827
2828 /* Read data from mailbox and increment destination pointer */
2829 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2830 dest++;
2831
2832 /* For all but the last word of data, signal data received */
2833 if (i < (length_in_words - 1)) {
2834 /* Signal dump data received - Clear IO debug Ack */
2835 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2836 ioa_cfg->regs.clr_interrupt_reg);
2837 }
2838 }
2839
2840 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2841 writel(IPR_UPROCI_RESET_ALERT,
2842 ioa_cfg->regs.set_uproc_interrupt_reg32);
2843
2844 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2845 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2846
2847 /* Signal dump data received - Clear IO debug Ack */
2848 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2849 ioa_cfg->regs.clr_interrupt_reg);
2850
2851 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2852 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2853 temp_pcii_reg =
2854 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2855
2856 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2857 return 0;
2858
2859 udelay(10);
2860 delay += 10;
2861 }
2862
2863 return 0;
2864 }
2865
2866 #ifdef CONFIG_SCSI_IPR_DUMP
2867 /**
2868 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2869 * @ioa_cfg: ioa config struct
2870 * @pci_address: adapter address
2871 * @length: length of data to copy
2872 *
2873 * Copy data from PCI adapter to kernel buffer.
2874 * Note: length MUST be a 4 byte multiple
2875 * Return value:
2876 * 0 on success / other on failure
2877 **/
2878 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2879 unsigned long pci_address, u32 length)
2880 {
2881 int bytes_copied = 0;
2882 int cur_len, rc, rem_len, rem_page_len, max_dump_size;
2883 __be32 *page;
2884 unsigned long lock_flags = 0;
2885 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2886
2887 if (ioa_cfg->sis64)
2888 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2889 else
2890 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2891
2892 while (bytes_copied < length &&
2893 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
2894 if (ioa_dump->page_offset >= PAGE_SIZE ||
2895 ioa_dump->page_offset == 0) {
2896 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2897
2898 if (!page) {
2899 ipr_trace;
2900 return bytes_copied;
2901 }
2902
2903 ioa_dump->page_offset = 0;
2904 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2905 ioa_dump->next_page_index++;
2906 } else
2907 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2908
2909 rem_len = length - bytes_copied;
2910 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2911 cur_len = min(rem_len, rem_page_len);
2912
2913 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2914 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2915 rc = -EIO;
2916 } else {
2917 rc = ipr_get_ldump_data_section(ioa_cfg,
2918 pci_address + bytes_copied,
2919 &page[ioa_dump->page_offset / 4],
2920 (cur_len / sizeof(u32)));
2921 }
2922 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2923
2924 if (!rc) {
2925 ioa_dump->page_offset += cur_len;
2926 bytes_copied += cur_len;
2927 } else {
2928 ipr_trace;
2929 break;
2930 }
2931 schedule();
2932 }
2933
2934 return bytes_copied;
2935 }
2936
2937 /**
2938 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2939 * @hdr: dump entry header struct
2940 *
2941 * Return value:
2942 * nothing
2943 **/
2944 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2945 {
2946 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2947 hdr->num_elems = 1;
2948 hdr->offset = sizeof(*hdr);
2949 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2950 }
2951
2952 /**
2953 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2954 * @ioa_cfg: ioa config struct
2955 * @driver_dump: driver dump struct
2956 *
2957 * Return value:
2958 * nothing
2959 **/
2960 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2961 struct ipr_driver_dump *driver_dump)
2962 {
2963 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2964
2965 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2966 driver_dump->ioa_type_entry.hdr.len =
2967 sizeof(struct ipr_dump_ioa_type_entry) -
2968 sizeof(struct ipr_dump_entry_header);
2969 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2970 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2971 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2972 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2973 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2974 ucode_vpd->minor_release[1];
2975 driver_dump->hdr.num_entries++;
2976 }
2977
2978 /**
2979 * ipr_dump_version_data - Fill in the driver version in the dump.
2980 * @ioa_cfg: ioa config struct
2981 * @driver_dump: driver dump struct
2982 *
2983 * Return value:
2984 * nothing
2985 **/
2986 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2987 struct ipr_driver_dump *driver_dump)
2988 {
2989 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2990 driver_dump->version_entry.hdr.len =
2991 sizeof(struct ipr_dump_version_entry) -
2992 sizeof(struct ipr_dump_entry_header);
2993 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2994 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2995 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2996 driver_dump->hdr.num_entries++;
2997 }
2998
2999 /**
3000 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
3001 * @ioa_cfg: ioa config struct
3002 * @driver_dump: driver dump struct
3003 *
3004 * Return value:
3005 * nothing
3006 **/
3007 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
3008 struct ipr_driver_dump *driver_dump)
3009 {
3010 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
3011 driver_dump->trace_entry.hdr.len =
3012 sizeof(struct ipr_dump_trace_entry) -
3013 sizeof(struct ipr_dump_entry_header);
3014 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3015 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
3016 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
3017 driver_dump->hdr.num_entries++;
3018 }
3019
3020 /**
3021 * ipr_dump_location_data - Fill in the IOA location in the dump.
3022 * @ioa_cfg: ioa config struct
3023 * @driver_dump: driver dump struct
3024 *
3025 * Return value:
3026 * nothing
3027 **/
3028 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
3029 struct ipr_driver_dump *driver_dump)
3030 {
3031 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
3032 driver_dump->location_entry.hdr.len =
3033 sizeof(struct ipr_dump_location_entry) -
3034 sizeof(struct ipr_dump_entry_header);
3035 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3036 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
3037 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
3038 driver_dump->hdr.num_entries++;
3039 }
3040
3041 /**
3042 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
3043 * @ioa_cfg: ioa config struct
3044 * @dump: dump struct
3045 *
3046 * Return value:
3047 * nothing
3048 **/
3049 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
3050 {
3051 unsigned long start_addr, sdt_word;
3052 unsigned long lock_flags = 0;
3053 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
3054 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
3055 u32 num_entries, max_num_entries, start_off, end_off;
3056 u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
3057 struct ipr_sdt *sdt;
3058 int valid = 1;
3059 int i;
3060
3061 ENTER;
3062
3063 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3064
3065 if (ioa_cfg->sdt_state != READ_DUMP) {
3066 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3067 return;
3068 }
3069
3070 if (ioa_cfg->sis64) {
3071 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3072 ssleep(IPR_DUMP_DELAY_SECONDS);
3073 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3074 }
3075
3076 start_addr = readl(ioa_cfg->ioa_mailbox);
3077
3078 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
3079 dev_err(&ioa_cfg->pdev->dev,
3080 "Invalid dump table format: %lx\n", start_addr);
3081 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3082 return;
3083 }
3084
3085 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
3086
3087 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
3088
3089 /* Initialize the overall dump header */
3090 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
3091 driver_dump->hdr.num_entries = 1;
3092 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
3093 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
3094 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
3095 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
3096
3097 ipr_dump_version_data(ioa_cfg, driver_dump);
3098 ipr_dump_location_data(ioa_cfg, driver_dump);
3099 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
3100 ipr_dump_trace_data(ioa_cfg, driver_dump);
3101
3102 /* Update dump_header */
3103 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
3104
3105 /* IOA Dump entry */
3106 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
3107 ioa_dump->hdr.len = 0;
3108 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3109 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
3110
3111 /* First entries in sdt are actually a list of dump addresses and
3112 lengths to gather the real dump data. sdt represents the pointer
3113 to the ioa generated dump table. Dump data will be extracted based
3114 on entries in this table */
3115 sdt = &ioa_dump->sdt;
3116
3117 if (ioa_cfg->sis64) {
3118 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
3119 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
3120 } else {
3121 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
3122 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
3123 }
3124
3125 bytes_to_copy = offsetof(struct ipr_sdt, entry) +
3126 (max_num_entries * sizeof(struct ipr_sdt_entry));
3127 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
3128 bytes_to_copy / sizeof(__be32));
3129
3130 /* Smart Dump table is ready to use and the first entry is valid */
3131 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
3132 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
3133 dev_err(&ioa_cfg->pdev->dev,
3134 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
3135 rc, be32_to_cpu(sdt->hdr.state));
3136 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
3137 ioa_cfg->sdt_state = DUMP_OBTAINED;
3138 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3139 return;
3140 }
3141
3142 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
3143
3144 if (num_entries > max_num_entries)
3145 num_entries = max_num_entries;
3146
3147 /* Update dump length to the actual data to be copied */
3148 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
3149 if (ioa_cfg->sis64)
3150 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
3151 else
3152 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
3153
3154 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3155
3156 for (i = 0; i < num_entries; i++) {
3157 if (ioa_dump->hdr.len > max_dump_size) {
3158 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3159 break;
3160 }
3161
3162 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
3163 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3164 if (ioa_cfg->sis64)
3165 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3166 else {
3167 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3168 end_off = be32_to_cpu(sdt->entry[i].end_token);
3169
3170 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3171 bytes_to_copy = end_off - start_off;
3172 else
3173 valid = 0;
3174 }
3175 if (valid) {
3176 if (bytes_to_copy > max_dump_size) {
3177 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3178 continue;
3179 }
3180
3181 /* Copy data from adapter to driver buffers */
3182 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3183 bytes_to_copy);
3184
3185 ioa_dump->hdr.len += bytes_copied;
3186
3187 if (bytes_copied != bytes_to_copy) {
3188 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3189 break;
3190 }
3191 }
3192 }
3193 }
3194
3195 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3196
3197 /* Update dump_header */
3198 driver_dump->hdr.len += ioa_dump->hdr.len;
3199 wmb();
3200 ioa_cfg->sdt_state = DUMP_OBTAINED;
3201 LEAVE;
3202 }
3203
3204 #else
3205 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0)
3206 #endif
3207
3208 /**
3209 * ipr_release_dump - Free adapter dump memory
3210 * @kref: kref struct
3211 *
3212 * Return value:
3213 * nothing
3214 **/
3215 static void ipr_release_dump(struct kref *kref)
3216 {
3217 struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref);
3218 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3219 unsigned long lock_flags = 0;
3220 int i;
3221
3222 ENTER;
3223 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3224 ioa_cfg->dump = NULL;
3225 ioa_cfg->sdt_state = INACTIVE;
3226 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3227
3228 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3229 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3230
3231 vfree(dump->ioa_dump.ioa_data);
3232 kfree(dump);
3233 LEAVE;
3234 }
3235
3236 static void ipr_add_remove_thread(struct work_struct *work)
3237 {
3238 unsigned long lock_flags;
3239 struct ipr_resource_entry *res;
3240 struct scsi_device *sdev;
3241 struct ipr_ioa_cfg *ioa_cfg =
3242 container_of(work, struct ipr_ioa_cfg, scsi_add_work_q);
3243 u8 bus, target, lun;
3244 int did_work;
3245
3246 ENTER;
3247 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3248
3249 restart:
3250 do {
3251 did_work = 0;
3252 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
3253 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3254 return;
3255 }
3256
3257 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3258 if (res->del_from_ml && res->sdev) {
3259 did_work = 1;
3260 sdev = res->sdev;
3261 if (!scsi_device_get(sdev)) {
3262 if (!res->add_to_ml)
3263 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3264 else
3265 res->del_from_ml = 0;
3266 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3267 scsi_remove_device(sdev);
3268 scsi_device_put(sdev);
3269 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3270 }
3271 break;
3272 }
3273 }
3274 } while (did_work);
3275
3276 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3277 if (res->add_to_ml) {
3278 bus = res->bus;
3279 target = res->target;
3280 lun = res->lun;
3281 res->add_to_ml = 0;
3282 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3283 scsi_add_device(ioa_cfg->host, bus, target, lun);
3284 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3285 goto restart;
3286 }
3287 }
3288
3289 ioa_cfg->scan_done = 1;
3290 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3291 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3292 LEAVE;
3293 }
3294
3295 /**
3296 * ipr_worker_thread - Worker thread
3297 * @work: ioa config struct
3298 *
3299 * Called at task level from a work thread. This function takes care
3300 * of adding and removing device from the mid-layer as configuration
3301 * changes are detected by the adapter.
3302 *
3303 * Return value:
3304 * nothing
3305 **/
3306 static void ipr_worker_thread(struct work_struct *work)
3307 {
3308 unsigned long lock_flags;
3309 struct ipr_dump *dump;
3310 struct ipr_ioa_cfg *ioa_cfg =
3311 container_of(work, struct ipr_ioa_cfg, work_q);
3312
3313 ENTER;
3314 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3315
3316 if (ioa_cfg->sdt_state == READ_DUMP) {
3317 dump = ioa_cfg->dump;
3318 if (!dump) {
3319 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3320 return;
3321 }
3322 kref_get(&dump->kref);
3323 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3324 ipr_get_ioa_dump(ioa_cfg, dump);
3325 kref_put(&dump->kref, ipr_release_dump);
3326
3327 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3328 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout)
3329 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3330 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3331 return;
3332 }
3333
3334 if (ioa_cfg->scsi_unblock) {
3335 ioa_cfg->scsi_unblock = 0;
3336 ioa_cfg->scsi_blocked = 0;
3337 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3338 scsi_unblock_requests(ioa_cfg->host);
3339 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3340 if (ioa_cfg->scsi_blocked)
3341 scsi_block_requests(ioa_cfg->host);
3342 }
3343
3344 if (!ioa_cfg->scan_enabled) {
3345 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3346 return;
3347 }
3348
3349 schedule_work(&ioa_cfg->scsi_add_work_q);
3350
3351 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3352 LEAVE;
3353 }
3354
3355 #ifdef CONFIG_SCSI_IPR_TRACE
3356 /**
3357 * ipr_read_trace - Dump the adapter trace
3358 * @filp: open sysfs file
3359 * @kobj: kobject struct
3360 * @bin_attr: bin_attribute struct
3361 * @buf: buffer
3362 * @off: offset
3363 * @count: buffer size
3364 *
3365 * Return value:
3366 * number of bytes printed to buffer
3367 **/
3368 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3369 struct bin_attribute *bin_attr,
3370 char *buf, loff_t off, size_t count)
3371 {
3372 struct device *dev = kobj_to_dev(kobj);
3373 struct Scsi_Host *shost = class_to_shost(dev);
3374 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3375 unsigned long lock_flags = 0;
3376 ssize_t ret;
3377
3378 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3379 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3380 IPR_TRACE_SIZE);
3381 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3382
3383 return ret;
3384 }
3385
3386 static struct bin_attribute ipr_trace_attr = {
3387 .attr = {
3388 .name = "trace",
3389 .mode = S_IRUGO,
3390 },
3391 .size = 0,
3392 .read = ipr_read_trace,
3393 };
3394 #endif
3395
3396 /**
3397 * ipr_show_fw_version - Show the firmware version
3398 * @dev: class device struct
3399 * @attr: device attribute (unused)
3400 * @buf: buffer
3401 *
3402 * Return value:
3403 * number of bytes printed to buffer
3404 **/
3405 static ssize_t ipr_show_fw_version(struct device *dev,
3406 struct device_attribute *attr, char *buf)
3407 {
3408 struct Scsi_Host *shost = class_to_shost(dev);
3409 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3410 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3411 unsigned long lock_flags = 0;
3412 int len;
3413
3414 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3415 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3416 ucode_vpd->major_release, ucode_vpd->card_type,
3417 ucode_vpd->minor_release[0],
3418 ucode_vpd->minor_release[1]);
3419 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3420 return len;
3421 }
3422
3423 static struct device_attribute ipr_fw_version_attr = {
3424 .attr = {
3425 .name = "fw_version",
3426 .mode = S_IRUGO,
3427 },
3428 .show = ipr_show_fw_version,
3429 };
3430
3431 /**
3432 * ipr_show_log_level - Show the adapter's error logging level
3433 * @dev: class device struct
3434 * @attr: device attribute (unused)
3435 * @buf: buffer
3436 *
3437 * Return value:
3438 * number of bytes printed to buffer
3439 **/
3440 static ssize_t ipr_show_log_level(struct device *dev,
3441 struct device_attribute *attr, char *buf)
3442 {
3443 struct Scsi_Host *shost = class_to_shost(dev);
3444 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3445 unsigned long lock_flags = 0;
3446 int len;
3447
3448 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3449 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3450 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3451 return len;
3452 }
3453
3454 /**
3455 * ipr_store_log_level - Change the adapter's error logging level
3456 * @dev: class device struct
3457 * @attr: device attribute (unused)
3458 * @buf: buffer
3459 * @count: buffer size
3460 *
3461 * Return value:
3462 * number of bytes printed to buffer
3463 **/
3464 static ssize_t ipr_store_log_level(struct device *dev,
3465 struct device_attribute *attr,
3466 const char *buf, size_t count)
3467 {
3468 struct Scsi_Host *shost = class_to_shost(dev);
3469 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3470 unsigned long lock_flags = 0;
3471
3472 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3473 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3474 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3475 return strlen(buf);
3476 }
3477
3478 static struct device_attribute ipr_log_level_attr = {
3479 .attr = {
3480 .name = "log_level",
3481 .mode = S_IRUGO | S_IWUSR,
3482 },
3483 .show = ipr_show_log_level,
3484 .store = ipr_store_log_level
3485 };
3486
3487 /**
3488 * ipr_store_diagnostics - IOA Diagnostics interface
3489 * @dev: device struct
3490 * @attr: device attribute (unused)
3491 * @buf: buffer
3492 * @count: buffer size
3493 *
3494 * This function will reset the adapter and wait a reasonable
3495 * amount of time for any errors that the adapter might log.
3496 *
3497 * Return value:
3498 * count on success / other on failure
3499 **/
3500 static ssize_t ipr_store_diagnostics(struct device *dev,
3501 struct device_attribute *attr,
3502 const char *buf, size_t count)
3503 {
3504 struct Scsi_Host *shost = class_to_shost(dev);
3505 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3506 unsigned long lock_flags = 0;
3507 int rc = count;
3508
3509 if (!capable(CAP_SYS_ADMIN))
3510 return -EACCES;
3511
3512 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3513 while (ioa_cfg->in_reset_reload) {
3514 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3515 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3516 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3517 }
3518
3519 ioa_cfg->errors_logged = 0;
3520 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3521
3522 if (ioa_cfg->in_reset_reload) {
3523 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3524 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3525
3526 /* Wait for a second for any errors to be logged */
3527 msleep(1000);
3528 } else {
3529 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3530 return -EIO;
3531 }
3532
3533 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3534 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3535 rc = -EIO;
3536 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3537
3538 return rc;
3539 }
3540
3541 static struct device_attribute ipr_diagnostics_attr = {
3542 .attr = {
3543 .name = "run_diagnostics",
3544 .mode = S_IWUSR,
3545 },
3546 .store = ipr_store_diagnostics
3547 };
3548
3549 /**
3550 * ipr_show_adapter_state - Show the adapter's state
3551 * @dev: device struct
3552 * @attr: device attribute (unused)
3553 * @buf: buffer
3554 *
3555 * Return value:
3556 * number of bytes printed to buffer
3557 **/
3558 static ssize_t ipr_show_adapter_state(struct device *dev,
3559 struct device_attribute *attr, char *buf)
3560 {
3561 struct Scsi_Host *shost = class_to_shost(dev);
3562 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3563 unsigned long lock_flags = 0;
3564 int len;
3565
3566 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3567 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
3568 len = snprintf(buf, PAGE_SIZE, "offline\n");
3569 else
3570 len = snprintf(buf, PAGE_SIZE, "online\n");
3571 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3572 return len;
3573 }
3574
3575 /**
3576 * ipr_store_adapter_state - Change adapter state
3577 * @dev: device struct
3578 * @attr: device attribute (unused)
3579 * @buf: buffer
3580 * @count: buffer size
3581 *
3582 * This function will change the adapter's state.
3583 *
3584 * Return value:
3585 * count on success / other on failure
3586 **/
3587 static ssize_t ipr_store_adapter_state(struct device *dev,
3588 struct device_attribute *attr,
3589 const char *buf, size_t count)
3590 {
3591 struct Scsi_Host *shost = class_to_shost(dev);
3592 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3593 unsigned long lock_flags;
3594 int result = count, i;
3595
3596 if (!capable(CAP_SYS_ADMIN))
3597 return -EACCES;
3598
3599 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3600 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead &&
3601 !strncmp(buf, "online", 6)) {
3602 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
3603 spin_lock(&ioa_cfg->hrrq[i]._lock);
3604 ioa_cfg->hrrq[i].ioa_is_dead = 0;
3605 spin_unlock(&ioa_cfg->hrrq[i]._lock);
3606 }
3607 wmb();
3608 ioa_cfg->reset_retries = 0;
3609 ioa_cfg->in_ioa_bringdown = 0;
3610 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3611 }
3612 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3613 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3614
3615 return result;
3616 }
3617
3618 static struct device_attribute ipr_ioa_state_attr = {
3619 .attr = {
3620 .name = "online_state",
3621 .mode = S_IRUGO | S_IWUSR,
3622 },
3623 .show = ipr_show_adapter_state,
3624 .store = ipr_store_adapter_state
3625 };
3626
3627 /**
3628 * ipr_store_reset_adapter - Reset the adapter
3629 * @dev: device struct
3630 * @attr: device attribute (unused)
3631 * @buf: buffer
3632 * @count: buffer size
3633 *
3634 * This function will reset the adapter.
3635 *
3636 * Return value:
3637 * count on success / other on failure
3638 **/
3639 static ssize_t ipr_store_reset_adapter(struct device *dev,
3640 struct device_attribute *attr,
3641 const char *buf, size_t count)
3642 {
3643 struct Scsi_Host *shost = class_to_shost(dev);
3644 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3645 unsigned long lock_flags;
3646 int result = count;
3647
3648 if (!capable(CAP_SYS_ADMIN))
3649 return -EACCES;
3650
3651 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3652 if (!ioa_cfg->in_reset_reload)
3653 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3654 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3655 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3656
3657 return result;
3658 }
3659
3660 static struct device_attribute ipr_ioa_reset_attr = {
3661 .attr = {
3662 .name = "reset_host",
3663 .mode = S_IWUSR,
3664 },
3665 .store = ipr_store_reset_adapter
3666 };
3667
3668 static int ipr_iopoll(struct irq_poll *iop, int budget);
3669 /**
3670 * ipr_show_iopoll_weight - Show ipr polling mode
3671 * @dev: class device struct
3672 * @attr: device attribute (unused)
3673 * @buf: buffer
3674 *
3675 * Return value:
3676 * number of bytes printed to buffer
3677 **/
3678 static ssize_t ipr_show_iopoll_weight(struct device *dev,
3679 struct device_attribute *attr, char *buf)
3680 {
3681 struct Scsi_Host *shost = class_to_shost(dev);
3682 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3683 unsigned long lock_flags = 0;
3684 int len;
3685
3686 spin_lock_irqsave(shost->host_lock, lock_flags);
3687 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight);
3688 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3689
3690 return len;
3691 }
3692
3693 /**
3694 * ipr_store_iopoll_weight - Change the adapter's polling mode
3695 * @dev: class device struct
3696 * @attr: device attribute (unused)
3697 * @buf: buffer
3698 * @count: buffer size
3699 *
3700 * Return value:
3701 * number of bytes printed to buffer
3702 **/
3703 static ssize_t ipr_store_iopoll_weight(struct device *dev,
3704 struct device_attribute *attr,
3705 const char *buf, size_t count)
3706 {
3707 struct Scsi_Host *shost = class_to_shost(dev);
3708 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3709 unsigned long user_iopoll_weight;
3710 unsigned long lock_flags = 0;
3711 int i;
3712
3713 if (!ioa_cfg->sis64) {
3714 dev_info(&ioa_cfg->pdev->dev, "irq_poll not supported on this adapter\n");
3715 return -EINVAL;
3716 }
3717 if (kstrtoul(buf, 10, &user_iopoll_weight))
3718 return -EINVAL;
3719
3720 if (user_iopoll_weight > 256) {
3721 dev_info(&ioa_cfg->pdev->dev, "Invalid irq_poll weight. It must be less than 256\n");
3722 return -EINVAL;
3723 }
3724
3725 if (user_iopoll_weight == ioa_cfg->iopoll_weight) {
3726 dev_info(&ioa_cfg->pdev->dev, "Current irq_poll weight has the same weight\n");
3727 return strlen(buf);
3728 }
3729
3730 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3731 for (i = 1; i < ioa_cfg->hrrq_num; i++)
3732 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
3733 }
3734
3735 spin_lock_irqsave(shost->host_lock, lock_flags);
3736 ioa_cfg->iopoll_weight = user_iopoll_weight;
3737 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3738 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
3739 irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
3740 ioa_cfg->iopoll_weight, ipr_iopoll);
3741 }
3742 }
3743 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3744
3745 return strlen(buf);
3746 }
3747
3748 static struct device_attribute ipr_iopoll_weight_attr = {
3749 .attr = {
3750 .name = "iopoll_weight",
3751 .mode = S_IRUGO | S_IWUSR,
3752 },
3753 .show = ipr_show_iopoll_weight,
3754 .store = ipr_store_iopoll_weight
3755 };
3756
3757 /**
3758 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3759 * @buf_len: buffer length
3760 *
3761 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3762 * list to use for microcode download
3763 *
3764 * Return value:
3765 * pointer to sglist / NULL on failure
3766 **/
3767 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3768 {
3769 int sg_size, order;
3770 struct ipr_sglist *sglist;
3771
3772 /* Get the minimum size per scatter/gather element */
3773 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3774
3775 /* Get the actual size per element */
3776 order = get_order(sg_size);
3777
3778 /* Allocate a scatter/gather list for the DMA */
3779 sglist = kzalloc(sizeof(struct ipr_sglist), GFP_KERNEL);
3780 if (sglist == NULL) {
3781 ipr_trace;
3782 return NULL;
3783 }
3784 sglist->order = order;
3785 sglist->scatterlist = sgl_alloc_order(buf_len, order, false, GFP_KERNEL,
3786 &sglist->num_sg);
3787 if (!sglist->scatterlist) {
3788 kfree(sglist);
3789 return NULL;
3790 }
3791
3792 return sglist;
3793 }
3794
3795 /**
3796 * ipr_free_ucode_buffer - Frees a microcode download buffer
3797 * @sglist: scatter/gather list pointer
3798 *
3799 * Free a DMA'able ucode download buffer previously allocated with
3800 * ipr_alloc_ucode_buffer
3801 *
3802 * Return value:
3803 * nothing
3804 **/
3805 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3806 {
3807 sgl_free_order(sglist->scatterlist, sglist->order);
3808 kfree(sglist);
3809 }
3810
3811 /**
3812 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3813 * @sglist: scatter/gather list pointer
3814 * @buffer: buffer pointer
3815 * @len: buffer length
3816 *
3817 * Copy a microcode image from a user buffer into a buffer allocated by
3818 * ipr_alloc_ucode_buffer
3819 *
3820 * Return value:
3821 * 0 on success / other on failure
3822 **/
3823 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3824 u8 *buffer, u32 len)
3825 {
3826 int bsize_elem, i, result = 0;
3827 struct scatterlist *sg;
3828
3829 /* Determine the actual number of bytes per element */
3830 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3831
3832 sg = sglist->scatterlist;
3833
3834 for (i = 0; i < (len / bsize_elem); i++, sg = sg_next(sg),
3835 buffer += bsize_elem) {
3836 struct page *page = sg_page(sg);
3837
3838 memcpy_to_page(page, 0, buffer, bsize_elem);
3839
3840 sg->length = bsize_elem;
3841
3842 if (result != 0) {
3843 ipr_trace;
3844 return result;
3845 }
3846 }
3847
3848 if (len % bsize_elem) {
3849 struct page *page = sg_page(sg);
3850
3851 memcpy_to_page(page, 0, buffer, len % bsize_elem);
3852
3853 sg->length = len % bsize_elem;
3854 }
3855
3856 sglist->buffer_len = len;
3857 return result;
3858 }
3859
3860 /**
3861 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3862 * @ipr_cmd: ipr command struct
3863 * @sglist: scatter/gather list
3864 *
3865 * Builds a microcode download IOA data list (IOADL).
3866 *
3867 **/
3868 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3869 struct ipr_sglist *sglist)
3870 {
3871 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3872 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3873 struct scatterlist *scatterlist = sglist->scatterlist;
3874 struct scatterlist *sg;
3875 int i;
3876
3877 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3878 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3879 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3880
3881 ioarcb->ioadl_len =
3882 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3883 for_each_sg(scatterlist, sg, ipr_cmd->dma_use_sg, i) {
3884 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3885 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
3886 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
3887 }
3888
3889 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3890 }
3891
3892 /**
3893 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3894 * @ipr_cmd: ipr command struct
3895 * @sglist: scatter/gather list
3896 *
3897 * Builds a microcode download IOA data list (IOADL).
3898 *
3899 **/
3900 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3901 struct ipr_sglist *sglist)
3902 {
3903 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3904 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3905 struct scatterlist *scatterlist = sglist->scatterlist;
3906 struct scatterlist *sg;
3907 int i;
3908
3909 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3910 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3911 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3912
3913 ioarcb->ioadl_len =
3914 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3915
3916 for_each_sg(scatterlist, sg, ipr_cmd->dma_use_sg, i) {
3917 ioadl[i].flags_and_data_len =
3918 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(sg));
3919 ioadl[i].address =
3920 cpu_to_be32(sg_dma_address(sg));
3921 }
3922
3923 ioadl[i-1].flags_and_data_len |=
3924 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3925 }
3926
3927 /**
3928 * ipr_update_ioa_ucode - Update IOA's microcode
3929 * @ioa_cfg: ioa config struct
3930 * @sglist: scatter/gather list
3931 *
3932 * Initiate an adapter reset to update the IOA's microcode
3933 *
3934 * Return value:
3935 * 0 on success / -EIO on failure
3936 **/
3937 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3938 struct ipr_sglist *sglist)
3939 {
3940 unsigned long lock_flags;
3941
3942 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3943 while (ioa_cfg->in_reset_reload) {
3944 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3945 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3946 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3947 }
3948
3949 if (ioa_cfg->ucode_sglist) {
3950 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3951 dev_err(&ioa_cfg->pdev->dev,
3952 "Microcode download already in progress\n");
3953 return -EIO;
3954 }
3955
3956 sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev,
3957 sglist->scatterlist, sglist->num_sg,
3958 DMA_TO_DEVICE);
3959
3960 if (!sglist->num_dma_sg) {
3961 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3962 dev_err(&ioa_cfg->pdev->dev,
3963 "Failed to map microcode download buffer!\n");
3964 return -EIO;
3965 }
3966
3967 ioa_cfg->ucode_sglist = sglist;
3968 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3969 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3970 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3971
3972 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3973 ioa_cfg->ucode_sglist = NULL;
3974 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3975 return 0;
3976 }
3977
3978 /**
3979 * ipr_store_update_fw - Update the firmware on the adapter
3980 * @dev: device struct
3981 * @attr: device attribute (unused)
3982 * @buf: buffer
3983 * @count: buffer size
3984 *
3985 * This function will update the firmware on the adapter.
3986 *
3987 * Return value:
3988 * count on success / other on failure
3989 **/
3990 static ssize_t ipr_store_update_fw(struct device *dev,
3991 struct device_attribute *attr,
3992 const char *buf, size_t count)
3993 {
3994 struct Scsi_Host *shost = class_to_shost(dev);
3995 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3996 struct ipr_ucode_image_header *image_hdr;
3997 const struct firmware *fw_entry;
3998 struct ipr_sglist *sglist;
3999 char fname[100];
4000 char *src;
4001 char *endline;
4002 int result, dnld_size;
4003
4004 if (!capable(CAP_SYS_ADMIN))
4005 return -EACCES;
4006
4007 snprintf(fname, sizeof(fname), "%s", buf);
4008
4009 endline = strchr(fname, '\n');
4010 if (endline)
4011 *endline = '\0';
4012
4013 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
4014 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
4015 return -EIO;
4016 }
4017
4018 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
4019
4020 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
4021 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
4022 sglist = ipr_alloc_ucode_buffer(dnld_size);
4023
4024 if (!sglist) {
4025 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
4026 release_firmware(fw_entry);
4027 return -ENOMEM;
4028 }
4029
4030 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
4031
4032 if (result) {
4033 dev_err(&ioa_cfg->pdev->dev,
4034 "Microcode buffer copy to DMA buffer failed\n");
4035 goto out;
4036 }
4037
4038 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n");
4039
4040 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
4041
4042 if (!result)
4043 result = count;
4044 out:
4045 ipr_free_ucode_buffer(sglist);
4046 release_firmware(fw_entry);
4047 return result;
4048 }
4049
4050 static struct device_attribute ipr_update_fw_attr = {
4051 .attr = {
4052 .name = "update_fw",
4053 .mode = S_IWUSR,
4054 },
4055 .store = ipr_store_update_fw
4056 };
4057
4058 /**
4059 * ipr_show_fw_type - Show the adapter's firmware type.
4060 * @dev: class device struct
4061 * @attr: device attribute (unused)
4062 * @buf: buffer
4063 *
4064 * Return value:
4065 * number of bytes printed to buffer
4066 **/
4067 static ssize_t ipr_show_fw_type(struct device *dev,
4068 struct device_attribute *attr, char *buf)
4069 {
4070 struct Scsi_Host *shost = class_to_shost(dev);
4071 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4072 unsigned long lock_flags = 0;
4073 int len;
4074
4075 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4076 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
4077 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4078 return len;
4079 }
4080
4081 static struct device_attribute ipr_ioa_fw_type_attr = {
4082 .attr = {
4083 .name = "fw_type",
4084 .mode = S_IRUGO,
4085 },
4086 .show = ipr_show_fw_type
4087 };
4088
4089 static ssize_t ipr_read_async_err_log(struct file *filep, struct kobject *kobj,
4090 struct bin_attribute *bin_attr, char *buf,
4091 loff_t off, size_t count)
4092 {
4093 struct device *cdev = kobj_to_dev(kobj);
4094 struct Scsi_Host *shost = class_to_shost(cdev);
4095 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4096 struct ipr_hostrcb *hostrcb;
4097 unsigned long lock_flags = 0;
4098 int ret;
4099
4100 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4101 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q,
4102 struct ipr_hostrcb, queue);
4103 if (!hostrcb) {
4104 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4105 return 0;
4106 }
4107 ret = memory_read_from_buffer(buf, count, &off, &hostrcb->hcam,
4108 sizeof(hostrcb->hcam));
4109 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4110 return ret;
4111 }
4112
4113 static ssize_t ipr_next_async_err_log(struct file *filep, struct kobject *kobj,
4114 struct bin_attribute *bin_attr, char *buf,
4115 loff_t off, size_t count)
4116 {
4117 struct device *cdev = kobj_to_dev(kobj);
4118 struct Scsi_Host *shost = class_to_shost(cdev);
4119 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4120 struct ipr_hostrcb *hostrcb;
4121 unsigned long lock_flags = 0;
4122
4123 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4124 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q,
4125 struct ipr_hostrcb, queue);
4126 if (!hostrcb) {
4127 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4128 return count;
4129 }
4130
4131 /* Reclaim hostrcb before exit */
4132 list_move_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
4133 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4134 return count;
4135 }
4136
4137 static struct bin_attribute ipr_ioa_async_err_log = {
4138 .attr = {
4139 .name = "async_err_log",
4140 .mode = S_IRUGO | S_IWUSR,
4141 },
4142 .size = 0,
4143 .read = ipr_read_async_err_log,
4144 .write = ipr_next_async_err_log
4145 };
4146
4147 static struct attribute *ipr_ioa_attrs[] = {
4148 &ipr_fw_version_attr.attr,
4149 &ipr_log_level_attr.attr,
4150 &ipr_diagnostics_attr.attr,
4151 &ipr_ioa_state_attr.attr,
4152 &ipr_ioa_reset_attr.attr,
4153 &ipr_update_fw_attr.attr,
4154 &ipr_ioa_fw_type_attr.attr,
4155 &ipr_iopoll_weight_attr.attr,
4156 NULL,
4157 };
4158
4159 ATTRIBUTE_GROUPS(ipr_ioa);
4160
4161 #ifdef CONFIG_SCSI_IPR_DUMP
4162 /**
4163 * ipr_read_dump - Dump the adapter
4164 * @filp: open sysfs file
4165 * @kobj: kobject struct
4166 * @bin_attr: bin_attribute struct
4167 * @buf: buffer
4168 * @off: offset
4169 * @count: buffer size
4170 *
4171 * Return value:
4172 * number of bytes printed to buffer
4173 **/
4174 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
4175 struct bin_attribute *bin_attr,
4176 char *buf, loff_t off, size_t count)
4177 {
4178 struct device *cdev = kobj_to_dev(kobj);
4179 struct Scsi_Host *shost = class_to_shost(cdev);
4180 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4181 struct ipr_dump *dump;
4182 unsigned long lock_flags = 0;
4183 char *src;
4184 int len, sdt_end;
4185 size_t rc = count;
4186
4187 if (!capable(CAP_SYS_ADMIN))
4188 return -EACCES;
4189
4190 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4191 dump = ioa_cfg->dump;
4192
4193 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
4194 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4195 return 0;
4196 }
4197 kref_get(&dump->kref);
4198 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4199
4200 if (off > dump->driver_dump.hdr.len) {
4201 kref_put(&dump->kref, ipr_release_dump);
4202 return 0;
4203 }
4204
4205 if (off + count > dump->driver_dump.hdr.len) {
4206 count = dump->driver_dump.hdr.len - off;
4207 rc = count;
4208 }
4209
4210 if (count && off < sizeof(dump->driver_dump)) {
4211 if (off + count > sizeof(dump->driver_dump))
4212 len = sizeof(dump->driver_dump) - off;
4213 else
4214 len = count;
4215 src = (u8 *)&dump->driver_dump + off;
4216 memcpy(buf, src, len);
4217 buf += len;
4218 off += len;
4219 count -= len;
4220 }
4221
4222 off -= sizeof(dump->driver_dump);
4223
4224 if (ioa_cfg->sis64)
4225 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4226 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
4227 sizeof(struct ipr_sdt_entry));
4228 else
4229 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4230 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
4231
4232 if (count && off < sdt_end) {
4233 if (off + count > sdt_end)
4234 len = sdt_end - off;
4235 else
4236 len = count;
4237 src = (u8 *)&dump->ioa_dump + off;
4238 memcpy(buf, src, len);
4239 buf += len;
4240 off += len;
4241 count -= len;
4242 }
4243
4244 off -= sdt_end;
4245
4246 while (count) {
4247 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
4248 len = PAGE_ALIGN(off) - off;
4249 else
4250 len = count;
4251 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
4252 src += off & ~PAGE_MASK;
4253 memcpy(buf, src, len);
4254 buf += len;
4255 off += len;
4256 count -= len;
4257 }
4258
4259 kref_put(&dump->kref, ipr_release_dump);
4260 return rc;
4261 }
4262
4263 /**
4264 * ipr_alloc_dump - Prepare for adapter dump
4265 * @ioa_cfg: ioa config struct
4266 *
4267 * Return value:
4268 * 0 on success / other on failure
4269 **/
4270 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
4271 {
4272 struct ipr_dump *dump;
4273 __be32 **ioa_data;
4274 unsigned long lock_flags = 0;
4275
4276 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
4277
4278 if (!dump) {
4279 ipr_err("Dump memory allocation failed\n");
4280 return -ENOMEM;
4281 }
4282
4283 if (ioa_cfg->sis64)
4284 ioa_data = vmalloc(array_size(IPR_FMT3_MAX_NUM_DUMP_PAGES,
4285 sizeof(__be32 *)));
4286 else
4287 ioa_data = vmalloc(array_size(IPR_FMT2_MAX_NUM_DUMP_PAGES,
4288 sizeof(__be32 *)));
4289
4290 if (!ioa_data) {
4291 ipr_err("Dump memory allocation failed\n");
4292 kfree(dump);
4293 return -ENOMEM;
4294 }
4295
4296 dump->ioa_dump.ioa_data = ioa_data;
4297
4298 kref_init(&dump->kref);
4299 dump->ioa_cfg = ioa_cfg;
4300
4301 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4302
4303 if (INACTIVE != ioa_cfg->sdt_state) {
4304 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4305 vfree(dump->ioa_dump.ioa_data);
4306 kfree(dump);
4307 return 0;
4308 }
4309
4310 ioa_cfg->dump = dump;
4311 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
4312 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) {
4313 ioa_cfg->dump_taken = 1;
4314 schedule_work(&ioa_cfg->work_q);
4315 }
4316 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4317
4318 return 0;
4319 }
4320
4321 /**
4322 * ipr_free_dump - Free adapter dump memory
4323 * @ioa_cfg: ioa config struct
4324 *
4325 * Return value:
4326 * 0 on success / other on failure
4327 **/
4328 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
4329 {
4330 struct ipr_dump *dump;
4331 unsigned long lock_flags = 0;
4332
4333 ENTER;
4334
4335 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4336 dump = ioa_cfg->dump;
4337 if (!dump) {
4338 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4339 return 0;
4340 }
4341
4342 ioa_cfg->dump = NULL;
4343 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4344
4345 kref_put(&dump->kref, ipr_release_dump);
4346
4347 LEAVE;
4348 return 0;
4349 }
4350
4351 /**
4352 * ipr_write_dump - Setup dump state of adapter
4353 * @filp: open sysfs file
4354 * @kobj: kobject struct
4355 * @bin_attr: bin_attribute struct
4356 * @buf: buffer
4357 * @off: offset
4358 * @count: buffer size
4359 *
4360 * Return value:
4361 * number of bytes printed to buffer
4362 **/
4363 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4364 struct bin_attribute *bin_attr,
4365 char *buf, loff_t off, size_t count)
4366 {
4367 struct device *cdev = kobj_to_dev(kobj);
4368 struct Scsi_Host *shost = class_to_shost(cdev);
4369 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4370 int rc;
4371
4372 if (!capable(CAP_SYS_ADMIN))
4373 return -EACCES;
4374
4375 if (buf[0] == '1')
4376 rc = ipr_alloc_dump(ioa_cfg);
4377 else if (buf[0] == '0')
4378 rc = ipr_free_dump(ioa_cfg);
4379 else
4380 return -EINVAL;
4381
4382 if (rc)
4383 return rc;
4384 else
4385 return count;
4386 }
4387
4388 static struct bin_attribute ipr_dump_attr = {
4389 .attr = {
4390 .name = "dump",
4391 .mode = S_IRUSR | S_IWUSR,
4392 },
4393 .size = 0,
4394 .read = ipr_read_dump,
4395 .write = ipr_write_dump
4396 };
4397 #else
4398 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4399 #endif
4400
4401 /**
4402 * ipr_change_queue_depth - Change the device's queue depth
4403 * @sdev: scsi device struct
4404 * @qdepth: depth to set
4405 *
4406 * Return value:
4407 * actual depth set
4408 **/
4409 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
4410 {
4411 scsi_change_queue_depth(sdev, qdepth);
4412 return sdev->queue_depth;
4413 }
4414
4415 /**
4416 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4417 * @dev: device struct
4418 * @attr: device attribute structure
4419 * @buf: buffer
4420 *
4421 * Return value:
4422 * number of bytes printed to buffer
4423 **/
4424 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4425 {
4426 struct scsi_device *sdev = to_scsi_device(dev);
4427 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4428 struct ipr_resource_entry *res;
4429 unsigned long lock_flags = 0;
4430 ssize_t len = -ENXIO;
4431
4432 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4433 res = (struct ipr_resource_entry *)sdev->hostdata;
4434 if (res)
4435 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4436 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4437 return len;
4438 }
4439
4440 static struct device_attribute ipr_adapter_handle_attr = {
4441 .attr = {
4442 .name = "adapter_handle",
4443 .mode = S_IRUSR,
4444 },
4445 .show = ipr_show_adapter_handle
4446 };
4447
4448 /**
4449 * ipr_show_resource_path - Show the resource path or the resource address for
4450 * this device.
4451 * @dev: device struct
4452 * @attr: device attribute structure
4453 * @buf: buffer
4454 *
4455 * Return value:
4456 * number of bytes printed to buffer
4457 **/
4458 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4459 {
4460 struct scsi_device *sdev = to_scsi_device(dev);
4461 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4462 struct ipr_resource_entry *res;
4463 unsigned long lock_flags = 0;
4464 ssize_t len = -ENXIO;
4465 char buffer[IPR_MAX_RES_PATH_LENGTH];
4466
4467 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4468 res = (struct ipr_resource_entry *)sdev->hostdata;
4469 if (res && ioa_cfg->sis64)
4470 len = snprintf(buf, PAGE_SIZE, "%s\n",
4471 __ipr_format_res_path(res->res_path, buffer,
4472 sizeof(buffer)));
4473 else if (res)
4474 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4475 res->bus, res->target, res->lun);
4476
4477 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4478 return len;
4479 }
4480
4481 static struct device_attribute ipr_resource_path_attr = {
4482 .attr = {
4483 .name = "resource_path",
4484 .mode = S_IRUGO,
4485 },
4486 .show = ipr_show_resource_path
4487 };
4488
4489 /**
4490 * ipr_show_device_id - Show the device_id for this device.
4491 * @dev: device struct
4492 * @attr: device attribute structure
4493 * @buf: buffer
4494 *
4495 * Return value:
4496 * number of bytes printed to buffer
4497 **/
4498 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4499 {
4500 struct scsi_device *sdev = to_scsi_device(dev);
4501 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4502 struct ipr_resource_entry *res;
4503 unsigned long lock_flags = 0;
4504 ssize_t len = -ENXIO;
4505
4506 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4507 res = (struct ipr_resource_entry *)sdev->hostdata;
4508 if (res && ioa_cfg->sis64)
4509 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id));
4510 else if (res)
4511 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4512
4513 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4514 return len;
4515 }
4516
4517 static struct device_attribute ipr_device_id_attr = {
4518 .attr = {
4519 .name = "device_id",
4520 .mode = S_IRUGO,
4521 },
4522 .show = ipr_show_device_id
4523 };
4524
4525 /**
4526 * ipr_show_resource_type - Show the resource type for this device.
4527 * @dev: device struct
4528 * @attr: device attribute structure
4529 * @buf: buffer
4530 *
4531 * Return value:
4532 * number of bytes printed to buffer
4533 **/
4534 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4535 {
4536 struct scsi_device *sdev = to_scsi_device(dev);
4537 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4538 struct ipr_resource_entry *res;
4539 unsigned long lock_flags = 0;
4540 ssize_t len = -ENXIO;
4541
4542 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4543 res = (struct ipr_resource_entry *)sdev->hostdata;
4544
4545 if (res)
4546 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4547
4548 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4549 return len;
4550 }
4551
4552 static struct device_attribute ipr_resource_type_attr = {
4553 .attr = {
4554 .name = "resource_type",
4555 .mode = S_IRUGO,
4556 },
4557 .show = ipr_show_resource_type
4558 };
4559
4560 /**
4561 * ipr_show_raw_mode - Show the adapter's raw mode
4562 * @dev: class device struct
4563 * @attr: device attribute (unused)
4564 * @buf: buffer
4565 *
4566 * Return value:
4567 * number of bytes printed to buffer
4568 **/
4569 static ssize_t ipr_show_raw_mode(struct device *dev,
4570 struct device_attribute *attr, char *buf)
4571 {
4572 struct scsi_device *sdev = to_scsi_device(dev);
4573 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4574 struct ipr_resource_entry *res;
4575 unsigned long lock_flags = 0;
4576 ssize_t len;
4577
4578 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4579 res = (struct ipr_resource_entry *)sdev->hostdata;
4580 if (res)
4581 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode);
4582 else
4583 len = -ENXIO;
4584 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4585 return len;
4586 }
4587
4588 /**
4589 * ipr_store_raw_mode - Change the adapter's raw mode
4590 * @dev: class device struct
4591 * @attr: device attribute (unused)
4592 * @buf: buffer
4593 * @count: buffer size
4594 *
4595 * Return value:
4596 * number of bytes printed to buffer
4597 **/
4598 static ssize_t ipr_store_raw_mode(struct device *dev,
4599 struct device_attribute *attr,
4600 const char *buf, size_t count)
4601 {
4602 struct scsi_device *sdev = to_scsi_device(dev);
4603 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4604 struct ipr_resource_entry *res;
4605 unsigned long lock_flags = 0;
4606 ssize_t len;
4607
4608 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4609 res = (struct ipr_resource_entry *)sdev->hostdata;
4610 if (res) {
4611 if (ipr_is_af_dasd_device(res)) {
4612 res->raw_mode = simple_strtoul(buf, NULL, 10);
4613 len = strlen(buf);
4614 if (res->sdev)
4615 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n",
4616 res->raw_mode ? "enabled" : "disabled");
4617 } else
4618 len = -EINVAL;
4619 } else
4620 len = -ENXIO;
4621 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4622 return len;
4623 }
4624
4625 static struct device_attribute ipr_raw_mode_attr = {
4626 .attr = {
4627 .name = "raw_mode",
4628 .mode = S_IRUGO | S_IWUSR,
4629 },
4630 .show = ipr_show_raw_mode,
4631 .store = ipr_store_raw_mode
4632 };
4633
4634 static struct attribute *ipr_dev_attrs[] = {
4635 &ipr_adapter_handle_attr.attr,
4636 &ipr_resource_path_attr.attr,
4637 &ipr_device_id_attr.attr,
4638 &ipr_resource_type_attr.attr,
4639 &ipr_raw_mode_attr.attr,
4640 NULL,
4641 };
4642
4643 ATTRIBUTE_GROUPS(ipr_dev);
4644
4645 /**
4646 * ipr_biosparam - Return the HSC mapping
4647 * @sdev: scsi device struct
4648 * @block_device: block device pointer
4649 * @capacity: capacity of the device
4650 * @parm: Array containing returned HSC values.
4651 *
4652 * This function generates the HSC parms that fdisk uses.
4653 * We want to make sure we return something that places partitions
4654 * on 4k boundaries for best performance with the IOA.
4655 *
4656 * Return value:
4657 * 0 on success
4658 **/
4659 static int ipr_biosparam(struct scsi_device *sdev,
4660 struct block_device *block_device,
4661 sector_t capacity, int *parm)
4662 {
4663 int heads, sectors;
4664 sector_t cylinders;
4665
4666 heads = 128;
4667 sectors = 32;
4668
4669 cylinders = capacity;
4670 sector_div(cylinders, (128 * 32));
4671
4672 /* return result */
4673 parm[0] = heads;
4674 parm[1] = sectors;
4675 parm[2] = cylinders;
4676
4677 return 0;
4678 }
4679
4680 /**
4681 * ipr_find_starget - Find target based on bus/target.
4682 * @starget: scsi target struct
4683 *
4684 * Return value:
4685 * resource entry pointer if found / NULL if not found
4686 **/
4687 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4688 {
4689 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4690 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4691 struct ipr_resource_entry *res;
4692
4693 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4694 if ((res->bus == starget->channel) &&
4695 (res->target == starget->id)) {
4696 return res;
4697 }
4698 }
4699
4700 return NULL;
4701 }
4702
4703 /**
4704 * ipr_target_destroy - Destroy a SCSI target
4705 * @starget: scsi target struct
4706 *
4707 **/
4708 static void ipr_target_destroy(struct scsi_target *starget)
4709 {
4710 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4711 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4712
4713 if (ioa_cfg->sis64) {
4714 if (!ipr_find_starget(starget)) {
4715 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4716 clear_bit(starget->id, ioa_cfg->array_ids);
4717 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4718 clear_bit(starget->id, ioa_cfg->vset_ids);
4719 else if (starget->channel == 0)
4720 clear_bit(starget->id, ioa_cfg->target_ids);
4721 }
4722 }
4723 }
4724
4725 /**
4726 * ipr_find_sdev - Find device based on bus/target/lun.
4727 * @sdev: scsi device struct
4728 *
4729 * Return value:
4730 * resource entry pointer if found / NULL if not found
4731 **/
4732 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4733 {
4734 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4735 struct ipr_resource_entry *res;
4736
4737 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4738 if ((res->bus == sdev->channel) &&
4739 (res->target == sdev->id) &&
4740 (res->lun == sdev->lun))
4741 return res;
4742 }
4743
4744 return NULL;
4745 }
4746
4747 /**
4748 * ipr_slave_destroy - Unconfigure a SCSI device
4749 * @sdev: scsi device struct
4750 *
4751 * Return value:
4752 * nothing
4753 **/
4754 static void ipr_slave_destroy(struct scsi_device *sdev)
4755 {
4756 struct ipr_resource_entry *res;
4757 struct ipr_ioa_cfg *ioa_cfg;
4758 unsigned long lock_flags = 0;
4759
4760 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4761
4762 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4763 res = (struct ipr_resource_entry *) sdev->hostdata;
4764 if (res) {
4765 sdev->hostdata = NULL;
4766 res->sdev = NULL;
4767 }
4768 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4769 }
4770
4771 /**
4772 * ipr_device_configure - Configure a SCSI device
4773 * @sdev: scsi device struct
4774 * @lim: queue limits
4775 *
4776 * This function configures the specified scsi device.
4777 *
4778 * Return value:
4779 * 0 on success
4780 **/
4781 static int ipr_device_configure(struct scsi_device *sdev,
4782 struct queue_limits *lim)
4783 {
4784 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4785 struct ipr_resource_entry *res;
4786 unsigned long lock_flags = 0;
4787 char buffer[IPR_MAX_RES_PATH_LENGTH];
4788
4789 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4790 res = sdev->hostdata;
4791 if (res) {
4792 if (ipr_is_af_dasd_device(res))
4793 sdev->type = TYPE_RAID;
4794 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4795 sdev->scsi_level = 4;
4796 sdev->no_uld_attach = 1;
4797 }
4798 if (ipr_is_vset_device(res)) {
4799 sdev->scsi_level = SCSI_SPC_3;
4800 sdev->no_report_opcodes = 1;
4801 blk_queue_rq_timeout(sdev->request_queue,
4802 IPR_VSET_RW_TIMEOUT);
4803 lim->max_hw_sectors = IPR_VSET_MAX_SECTORS;
4804 }
4805 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4806
4807 if (ioa_cfg->sis64)
4808 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4809 ipr_format_res_path(ioa_cfg,
4810 res->res_path, buffer, sizeof(buffer)));
4811 return 0;
4812 }
4813 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4814 return 0;
4815 }
4816
4817 /**
4818 * ipr_slave_alloc - Prepare for commands to a device.
4819 * @sdev: scsi device struct
4820 *
4821 * This function saves a pointer to the resource entry
4822 * in the scsi device struct if the device exists. We
4823 * can then use this pointer in ipr_queuecommand when
4824 * handling new commands.
4825 *
4826 * Return value:
4827 * 0 on success / -ENXIO if device does not exist
4828 **/
4829 static int ipr_slave_alloc(struct scsi_device *sdev)
4830 {
4831 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4832 struct ipr_resource_entry *res;
4833 unsigned long lock_flags;
4834 int rc = -ENXIO;
4835
4836 sdev->hostdata = NULL;
4837
4838 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4839
4840 res = ipr_find_sdev(sdev);
4841 if (res) {
4842 res->sdev = sdev;
4843 res->add_to_ml = 0;
4844 res->in_erp = 0;
4845 sdev->hostdata = res;
4846 if (!ipr_is_naca_model(res))
4847 res->needs_sync_complete = 1;
4848 rc = 0;
4849 if (ipr_is_gata(res)) {
4850 sdev_printk(KERN_ERR, sdev, "SATA devices are no longer "
4851 "supported by this driver. Skipping device.\n");
4852 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4853 return -ENXIO;
4854 }
4855 }
4856
4857 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4858
4859 return rc;
4860 }
4861
4862 /**
4863 * ipr_match_lun - Match function for specified LUN
4864 * @ipr_cmd: ipr command struct
4865 * @device: device to match (sdev)
4866 *
4867 * Returns:
4868 * 1 if command matches sdev / 0 if command does not match sdev
4869 **/
4870 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device)
4871 {
4872 if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device)
4873 return 1;
4874 return 0;
4875 }
4876
4877 /**
4878 * ipr_cmnd_is_free - Check if a command is free or not
4879 * @ipr_cmd: ipr command struct
4880 *
4881 * Returns:
4882 * true / false
4883 **/
4884 static bool ipr_cmnd_is_free(struct ipr_cmnd *ipr_cmd)
4885 {
4886 struct ipr_cmnd *loop_cmd;
4887
4888 list_for_each_entry(loop_cmd, &ipr_cmd->hrrq->hrrq_free_q, queue) {
4889 if (loop_cmd == ipr_cmd)
4890 return true;
4891 }
4892
4893 return false;
4894 }
4895
4896 /**
4897 * ipr_wait_for_ops - Wait for matching commands to complete
4898 * @ioa_cfg: ioa config struct
4899 * @device: device to match (sdev)
4900 * @match: match function to use
4901 *
4902 * Returns:
4903 * SUCCESS / FAILED
4904 **/
4905 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device,
4906 int (*match)(struct ipr_cmnd *, void *))
4907 {
4908 struct ipr_cmnd *ipr_cmd;
4909 int wait, i;
4910 unsigned long flags;
4911 struct ipr_hrr_queue *hrrq;
4912 signed long timeout = IPR_ABORT_TASK_TIMEOUT;
4913 DECLARE_COMPLETION_ONSTACK(comp);
4914
4915 ENTER;
4916 do {
4917 wait = 0;
4918
4919 for_each_hrrq(hrrq, ioa_cfg) {
4920 spin_lock_irqsave(hrrq->lock, flags);
4921 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
4922 ipr_cmd = ioa_cfg->ipr_cmnd_list[i];
4923 if (!ipr_cmnd_is_free(ipr_cmd)) {
4924 if (match(ipr_cmd, device)) {
4925 ipr_cmd->eh_comp = &comp;
4926 wait++;
4927 }
4928 }
4929 }
4930 spin_unlock_irqrestore(hrrq->lock, flags);
4931 }
4932
4933 if (wait) {
4934 timeout = wait_for_completion_timeout(&comp, timeout);
4935
4936 if (!timeout) {
4937 wait = 0;
4938
4939 for_each_hrrq(hrrq, ioa_cfg) {
4940 spin_lock_irqsave(hrrq->lock, flags);
4941 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
4942 ipr_cmd = ioa_cfg->ipr_cmnd_list[i];
4943 if (!ipr_cmnd_is_free(ipr_cmd)) {
4944 if (match(ipr_cmd, device)) {
4945 ipr_cmd->eh_comp = NULL;
4946 wait++;
4947 }
4948 }
4949 }
4950 spin_unlock_irqrestore(hrrq->lock, flags);
4951 }
4952
4953 if (wait)
4954 dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n");
4955 LEAVE;
4956 return wait ? FAILED : SUCCESS;
4957 }
4958 }
4959 } while (wait);
4960
4961 LEAVE;
4962 return SUCCESS;
4963 }
4964
4965 static int ipr_eh_host_reset(struct scsi_cmnd *cmd)
4966 {
4967 struct ipr_ioa_cfg *ioa_cfg;
4968 unsigned long lock_flags = 0;
4969 int rc = SUCCESS;
4970
4971 ENTER;
4972 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
4973 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4974
4975 if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
4976 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4977 dev_err(&ioa_cfg->pdev->dev,
4978 "Adapter being reset as a result of error recovery.\n");
4979
4980 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4981 ioa_cfg->sdt_state = GET_DUMP;
4982 }
4983
4984 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4985 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4986 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4987
4988 /* If we got hit with a host reset while we were already resetting
4989 the adapter for some reason, and the reset failed. */
4990 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
4991 ipr_trace;
4992 rc = FAILED;
4993 }
4994
4995 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4996 LEAVE;
4997 return rc;
4998 }
4999
5000 /**
5001 * ipr_device_reset - Reset the device
5002 * @ioa_cfg: ioa config struct
5003 * @res: resource entry struct
5004 *
5005 * This function issues a device reset to the affected device.
5006 * If the device is a SCSI device, a LUN reset will be sent
5007 * to the device first. If that does not work, a target reset
5008 * will be sent.
5009 *
5010 * Return value:
5011 * 0 on success / non-zero on failure
5012 **/
5013 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
5014 struct ipr_resource_entry *res)
5015 {
5016 struct ipr_cmnd *ipr_cmd;
5017 struct ipr_ioarcb *ioarcb;
5018 struct ipr_cmd_pkt *cmd_pkt;
5019 u32 ioasc;
5020
5021 ENTER;
5022 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5023 ioarcb = &ipr_cmd->ioarcb;
5024 cmd_pkt = &ioarcb->cmd_pkt;
5025
5026 if (ipr_cmd->ioa_cfg->sis64)
5027 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
5028
5029 ioarcb->res_handle = res->res_handle;
5030 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5031 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5032
5033 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5034 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5035 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5036
5037 LEAVE;
5038 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0;
5039 }
5040
5041 /**
5042 * __ipr_eh_dev_reset - Reset the device
5043 * @scsi_cmd: scsi command struct
5044 *
5045 * This function issues a device reset to the affected device.
5046 * A LUN reset will be sent to the device first. If that does
5047 * not work, a target reset will be sent.
5048 *
5049 * Return value:
5050 * SUCCESS / FAILED
5051 **/
5052 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd)
5053 {
5054 struct ipr_ioa_cfg *ioa_cfg;
5055 struct ipr_resource_entry *res;
5056 int rc = 0;
5057
5058 ENTER;
5059 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5060 res = scsi_cmd->device->hostdata;
5061
5062 /*
5063 * If we are currently going through reset/reload, return failed. This will force the
5064 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
5065 * reset to complete
5066 */
5067 if (ioa_cfg->in_reset_reload)
5068 return FAILED;
5069 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5070 return FAILED;
5071
5072 res->resetting_device = 1;
5073 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
5074
5075 rc = ipr_device_reset(ioa_cfg, res);
5076 res->resetting_device = 0;
5077 res->reset_occurred = 1;
5078
5079 LEAVE;
5080 return rc ? FAILED : SUCCESS;
5081 }
5082
5083 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd)
5084 {
5085 int rc;
5086 struct ipr_ioa_cfg *ioa_cfg;
5087 struct ipr_resource_entry *res;
5088
5089 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5090 res = cmd->device->hostdata;
5091
5092 if (!res)
5093 return FAILED;
5094
5095 spin_lock_irq(cmd->device->host->host_lock);
5096 rc = __ipr_eh_dev_reset(cmd);
5097 spin_unlock_irq(cmd->device->host->host_lock);
5098
5099 if (rc == SUCCESS)
5100 rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun);
5101
5102 return rc;
5103 }
5104
5105 /**
5106 * ipr_bus_reset_done - Op done function for bus reset.
5107 * @ipr_cmd: ipr command struct
5108 *
5109 * This function is the op done function for a bus reset
5110 *
5111 * Return value:
5112 * none
5113 **/
5114 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
5115 {
5116 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5117 struct ipr_resource_entry *res;
5118
5119 ENTER;
5120 if (!ioa_cfg->sis64)
5121 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5122 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
5123 scsi_report_bus_reset(ioa_cfg->host, res->bus);
5124 break;
5125 }
5126 }
5127
5128 /*
5129 * If abort has not completed, indicate the reset has, else call the
5130 * abort's done function to wake the sleeping eh thread
5131 */
5132 if (ipr_cmd->sibling->sibling)
5133 ipr_cmd->sibling->sibling = NULL;
5134 else
5135 ipr_cmd->sibling->done(ipr_cmd->sibling);
5136
5137 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5138 LEAVE;
5139 }
5140
5141 /**
5142 * ipr_abort_timeout - An abort task has timed out
5143 * @t: Timer context used to fetch ipr command struct
5144 *
5145 * This function handles when an abort task times out. If this
5146 * happens we issue a bus reset since we have resources tied
5147 * up that must be freed before returning to the midlayer.
5148 *
5149 * Return value:
5150 * none
5151 **/
5152 static void ipr_abort_timeout(struct timer_list *t)
5153 {
5154 struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
5155 struct ipr_cmnd *reset_cmd;
5156 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5157 struct ipr_cmd_pkt *cmd_pkt;
5158 unsigned long lock_flags = 0;
5159
5160 ENTER;
5161 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5162 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
5163 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5164 return;
5165 }
5166
5167 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
5168 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5169 ipr_cmd->sibling = reset_cmd;
5170 reset_cmd->sibling = ipr_cmd;
5171 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
5172 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
5173 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5174 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5175 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
5176
5177 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5178 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5179 LEAVE;
5180 }
5181
5182 /**
5183 * ipr_cancel_op - Cancel specified op
5184 * @scsi_cmd: scsi command struct
5185 *
5186 * This function cancels specified op.
5187 *
5188 * Return value:
5189 * SUCCESS / FAILED
5190 **/
5191 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd)
5192 {
5193 struct ipr_cmnd *ipr_cmd;
5194 struct ipr_ioa_cfg *ioa_cfg;
5195 struct ipr_resource_entry *res;
5196 struct ipr_cmd_pkt *cmd_pkt;
5197 u32 ioasc;
5198 int i, op_found = 0;
5199 struct ipr_hrr_queue *hrrq;
5200
5201 ENTER;
5202 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5203 res = scsi_cmd->device->hostdata;
5204
5205 /* If we are currently going through reset/reload, return failed.
5206 * This will force the mid-layer to call ipr_eh_host_reset,
5207 * which will then go to sleep and wait for the reset to complete
5208 */
5209 if (ioa_cfg->in_reset_reload ||
5210 ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5211 return FAILED;
5212 if (!res)
5213 return FAILED;
5214
5215 /*
5216 * If we are aborting a timed out op, chances are that the timeout was caused
5217 * by a still not detected EEH error. In such cases, reading a register will
5218 * trigger the EEH recovery infrastructure.
5219 */
5220 readl(ioa_cfg->regs.sense_interrupt_reg);
5221
5222 if (!ipr_is_gscsi(res))
5223 return FAILED;
5224
5225 for_each_hrrq(hrrq, ioa_cfg) {
5226 spin_lock(&hrrq->_lock);
5227 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
5228 if (ioa_cfg->ipr_cmnd_list[i]->scsi_cmd == scsi_cmd) {
5229 if (!ipr_cmnd_is_free(ioa_cfg->ipr_cmnd_list[i])) {
5230 op_found = 1;
5231 break;
5232 }
5233 }
5234 }
5235 spin_unlock(&hrrq->_lock);
5236 }
5237
5238 if (!op_found)
5239 return SUCCESS;
5240
5241 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5242 ipr_cmd->ioarcb.res_handle = res->res_handle;
5243 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5244 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5245 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5246 ipr_cmd->u.sdev = scsi_cmd->device;
5247
5248 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
5249 scsi_cmd->cmnd[0]);
5250 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
5251 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5252
5253 /*
5254 * If the abort task timed out and we sent a bus reset, we will get
5255 * one the following responses to the abort
5256 */
5257 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
5258 ioasc = 0;
5259 ipr_trace;
5260 }
5261
5262 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5263 if (!ipr_is_naca_model(res))
5264 res->needs_sync_complete = 1;
5265
5266 LEAVE;
5267 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS;
5268 }
5269
5270 /**
5271 * ipr_scan_finished - Report whether scan is done
5272 * @shost: scsi host struct
5273 * @elapsed_time: elapsed time
5274 *
5275 * Return value:
5276 * 0 if scan in progress / 1 if scan is complete
5277 **/
5278 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time)
5279 {
5280 unsigned long lock_flags;
5281 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
5282 int rc = 0;
5283
5284 spin_lock_irqsave(shost->host_lock, lock_flags);
5285 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done)
5286 rc = 1;
5287 if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2))
5288 rc = 1;
5289 spin_unlock_irqrestore(shost->host_lock, lock_flags);
5290 return rc;
5291 }
5292
5293 /**
5294 * ipr_eh_abort - Reset the host adapter
5295 * @scsi_cmd: scsi command struct
5296 *
5297 * Return value:
5298 * SUCCESS / FAILED
5299 **/
5300 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd)
5301 {
5302 unsigned long flags;
5303 int rc;
5304 struct ipr_ioa_cfg *ioa_cfg;
5305
5306 ENTER;
5307
5308 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5309
5310 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
5311 rc = ipr_cancel_op(scsi_cmd);
5312 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
5313
5314 if (rc == SUCCESS)
5315 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun);
5316 LEAVE;
5317 return rc;
5318 }
5319
5320 /**
5321 * ipr_handle_other_interrupt - Handle "other" interrupts
5322 * @ioa_cfg: ioa config struct
5323 * @int_reg: interrupt register
5324 *
5325 * Return value:
5326 * IRQ_NONE / IRQ_HANDLED
5327 **/
5328 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
5329 u32 int_reg)
5330 {
5331 irqreturn_t rc = IRQ_HANDLED;
5332 u32 int_mask_reg;
5333
5334 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5335 int_reg &= ~int_mask_reg;
5336
5337 /* If an interrupt on the adapter did not occur, ignore it.
5338 * Or in the case of SIS 64, check for a stage change interrupt.
5339 */
5340 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5341 if (ioa_cfg->sis64) {
5342 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5343 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5344 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5345
5346 /* clear stage change */
5347 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5348 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5349 list_del(&ioa_cfg->reset_cmd->queue);
5350 del_timer(&ioa_cfg->reset_cmd->timer);
5351 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5352 return IRQ_HANDLED;
5353 }
5354 }
5355
5356 return IRQ_NONE;
5357 }
5358
5359 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5360 /* Mask the interrupt */
5361 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5362 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5363
5364 list_del(&ioa_cfg->reset_cmd->queue);
5365 del_timer(&ioa_cfg->reset_cmd->timer);
5366 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5367 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5368 if (ioa_cfg->clear_isr) {
5369 if (ipr_debug && printk_ratelimit())
5370 dev_err(&ioa_cfg->pdev->dev,
5371 "Spurious interrupt detected. 0x%08X\n", int_reg);
5372 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5373 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5374 return IRQ_NONE;
5375 }
5376 } else {
5377 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5378 ioa_cfg->ioa_unit_checked = 1;
5379 else if (int_reg & IPR_PCII_NO_HOST_RRQ)
5380 dev_err(&ioa_cfg->pdev->dev,
5381 "No Host RRQ. 0x%08X\n", int_reg);
5382 else
5383 dev_err(&ioa_cfg->pdev->dev,
5384 "Permanent IOA failure. 0x%08X\n", int_reg);
5385
5386 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5387 ioa_cfg->sdt_state = GET_DUMP;
5388
5389 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5390 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5391 }
5392
5393 return rc;
5394 }
5395
5396 /**
5397 * ipr_isr_eh - Interrupt service routine error handler
5398 * @ioa_cfg: ioa config struct
5399 * @msg: message to log
5400 * @number: various meanings depending on the caller/message
5401 *
5402 * Return value:
5403 * none
5404 **/
5405 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number)
5406 {
5407 ioa_cfg->errors_logged++;
5408 dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number);
5409
5410 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5411 ioa_cfg->sdt_state = GET_DUMP;
5412
5413 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5414 }
5415
5416 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget,
5417 struct list_head *doneq)
5418 {
5419 u32 ioasc;
5420 u16 cmd_index;
5421 struct ipr_cmnd *ipr_cmd;
5422 struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg;
5423 int num_hrrq = 0;
5424
5425 /* If interrupts are disabled, ignore the interrupt */
5426 if (!hrr_queue->allow_interrupts)
5427 return 0;
5428
5429 while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5430 hrr_queue->toggle_bit) {
5431
5432 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) &
5433 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >>
5434 IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5435
5436 if (unlikely(cmd_index > hrr_queue->max_cmd_id ||
5437 cmd_index < hrr_queue->min_cmd_id)) {
5438 ipr_isr_eh(ioa_cfg,
5439 "Invalid response handle from IOA: ",
5440 cmd_index);
5441 break;
5442 }
5443
5444 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5445 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5446
5447 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5448
5449 list_move_tail(&ipr_cmd->queue, doneq);
5450
5451 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) {
5452 hrr_queue->hrrq_curr++;
5453 } else {
5454 hrr_queue->hrrq_curr = hrr_queue->hrrq_start;
5455 hrr_queue->toggle_bit ^= 1u;
5456 }
5457 num_hrrq++;
5458 if (budget > 0 && num_hrrq >= budget)
5459 break;
5460 }
5461
5462 return num_hrrq;
5463 }
5464
5465 static int ipr_iopoll(struct irq_poll *iop, int budget)
5466 {
5467 struct ipr_hrr_queue *hrrq;
5468 struct ipr_cmnd *ipr_cmd, *temp;
5469 unsigned long hrrq_flags;
5470 int completed_ops;
5471 LIST_HEAD(doneq);
5472
5473 hrrq = container_of(iop, struct ipr_hrr_queue, iopoll);
5474
5475 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5476 completed_ops = ipr_process_hrrq(hrrq, budget, &doneq);
5477
5478 if (completed_ops < budget)
5479 irq_poll_complete(iop);
5480 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5481
5482 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5483 list_del(&ipr_cmd->queue);
5484 del_timer(&ipr_cmd->timer);
5485 ipr_cmd->fast_done(ipr_cmd);
5486 }
5487
5488 return completed_ops;
5489 }
5490
5491 /**
5492 * ipr_isr - Interrupt service routine
5493 * @irq: irq number
5494 * @devp: pointer to ioa config struct
5495 *
5496 * Return value:
5497 * IRQ_NONE / IRQ_HANDLED
5498 **/
5499 static irqreturn_t ipr_isr(int irq, void *devp)
5500 {
5501 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5502 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5503 unsigned long hrrq_flags = 0;
5504 u32 int_reg = 0;
5505 int num_hrrq = 0;
5506 int irq_none = 0;
5507 struct ipr_cmnd *ipr_cmd, *temp;
5508 irqreturn_t rc = IRQ_NONE;
5509 LIST_HEAD(doneq);
5510
5511 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5512 /* If interrupts are disabled, ignore the interrupt */
5513 if (!hrrq->allow_interrupts) {
5514 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5515 return IRQ_NONE;
5516 }
5517
5518 while (1) {
5519 if (ipr_process_hrrq(hrrq, -1, &doneq)) {
5520 rc = IRQ_HANDLED;
5521
5522 if (!ioa_cfg->clear_isr)
5523 break;
5524
5525 /* Clear the PCI interrupt */
5526 num_hrrq = 0;
5527 do {
5528 writel(IPR_PCII_HRRQ_UPDATED,
5529 ioa_cfg->regs.clr_interrupt_reg32);
5530 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5531 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5532 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5533
5534 } else if (rc == IRQ_NONE && irq_none == 0) {
5535 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5536 irq_none++;
5537 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5538 int_reg & IPR_PCII_HRRQ_UPDATED) {
5539 ipr_isr_eh(ioa_cfg,
5540 "Error clearing HRRQ: ", num_hrrq);
5541 rc = IRQ_HANDLED;
5542 break;
5543 } else
5544 break;
5545 }
5546
5547 if (unlikely(rc == IRQ_NONE))
5548 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5549
5550 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5551 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5552 list_del(&ipr_cmd->queue);
5553 del_timer(&ipr_cmd->timer);
5554 ipr_cmd->fast_done(ipr_cmd);
5555 }
5556 return rc;
5557 }
5558
5559 /**
5560 * ipr_isr_mhrrq - Interrupt service routine
5561 * @irq: irq number
5562 * @devp: pointer to ioa config struct
5563 *
5564 * Return value:
5565 * IRQ_NONE / IRQ_HANDLED
5566 **/
5567 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp)
5568 {
5569 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5570 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5571 unsigned long hrrq_flags = 0;
5572 struct ipr_cmnd *ipr_cmd, *temp;
5573 irqreturn_t rc = IRQ_NONE;
5574 LIST_HEAD(doneq);
5575
5576 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5577
5578 /* If interrupts are disabled, ignore the interrupt */
5579 if (!hrrq->allow_interrupts) {
5580 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5581 return IRQ_NONE;
5582 }
5583
5584 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
5585 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5586 hrrq->toggle_bit) {
5587 irq_poll_sched(&hrrq->iopoll);
5588 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5589 return IRQ_HANDLED;
5590 }
5591 } else {
5592 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5593 hrrq->toggle_bit)
5594
5595 if (ipr_process_hrrq(hrrq, -1, &doneq))
5596 rc = IRQ_HANDLED;
5597 }
5598
5599 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5600
5601 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5602 list_del(&ipr_cmd->queue);
5603 del_timer(&ipr_cmd->timer);
5604 ipr_cmd->fast_done(ipr_cmd);
5605 }
5606 return rc;
5607 }
5608
5609 /**
5610 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5611 * @ioa_cfg: ioa config struct
5612 * @ipr_cmd: ipr command struct
5613 *
5614 * Return value:
5615 * 0 on success / -1 on failure
5616 **/
5617 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5618 struct ipr_cmnd *ipr_cmd)
5619 {
5620 int i, nseg;
5621 struct scatterlist *sg;
5622 u32 length;
5623 u32 ioadl_flags = 0;
5624 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5625 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5626 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5627
5628 length = scsi_bufflen(scsi_cmd);
5629 if (!length)
5630 return 0;
5631
5632 nseg = scsi_dma_map(scsi_cmd);
5633 if (nseg < 0) {
5634 if (printk_ratelimit())
5635 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5636 return -1;
5637 }
5638
5639 ipr_cmd->dma_use_sg = nseg;
5640
5641 ioarcb->data_transfer_length = cpu_to_be32(length);
5642 ioarcb->ioadl_len =
5643 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5644
5645 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5646 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5647 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5648 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5649 ioadl_flags = IPR_IOADL_FLAGS_READ;
5650
5651 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5652 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5653 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5654 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5655 }
5656
5657 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5658 return 0;
5659 }
5660
5661 /**
5662 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5663 * @ioa_cfg: ioa config struct
5664 * @ipr_cmd: ipr command struct
5665 *
5666 * Return value:
5667 * 0 on success / -1 on failure
5668 **/
5669 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5670 struct ipr_cmnd *ipr_cmd)
5671 {
5672 int i, nseg;
5673 struct scatterlist *sg;
5674 u32 length;
5675 u32 ioadl_flags = 0;
5676 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5677 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5678 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5679
5680 length = scsi_bufflen(scsi_cmd);
5681 if (!length)
5682 return 0;
5683
5684 nseg = scsi_dma_map(scsi_cmd);
5685 if (nseg < 0) {
5686 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5687 return -1;
5688 }
5689
5690 ipr_cmd->dma_use_sg = nseg;
5691
5692 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5693 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5694 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5695 ioarcb->data_transfer_length = cpu_to_be32(length);
5696 ioarcb->ioadl_len =
5697 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5698 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5699 ioadl_flags = IPR_IOADL_FLAGS_READ;
5700 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5701 ioarcb->read_ioadl_len =
5702 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5703 }
5704
5705 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5706 ioadl = ioarcb->u.add_data.u.ioadl;
5707 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5708 offsetof(struct ipr_ioarcb, u.add_data));
5709 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5710 }
5711
5712 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5713 ioadl[i].flags_and_data_len =
5714 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5715 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5716 }
5717
5718 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5719 return 0;
5720 }
5721
5722 /**
5723 * __ipr_erp_done - Process completion of ERP for a device
5724 * @ipr_cmd: ipr command struct
5725 *
5726 * This function copies the sense buffer into the scsi_cmd
5727 * struct and pushes the scsi_done function.
5728 *
5729 * Return value:
5730 * nothing
5731 **/
5732 static void __ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5733 {
5734 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5735 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5736 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5737
5738 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5739 scsi_cmd->result |= (DID_ERROR << 16);
5740 scmd_printk(KERN_ERR, scsi_cmd,
5741 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5742 } else {
5743 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5744 SCSI_SENSE_BUFFERSIZE);
5745 }
5746
5747 if (res) {
5748 if (!ipr_is_naca_model(res))
5749 res->needs_sync_complete = 1;
5750 res->in_erp = 0;
5751 }
5752 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5753 scsi_done(scsi_cmd);
5754 if (ipr_cmd->eh_comp)
5755 complete(ipr_cmd->eh_comp);
5756 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5757 }
5758
5759 /**
5760 * ipr_erp_done - Process completion of ERP for a device
5761 * @ipr_cmd: ipr command struct
5762 *
5763 * This function copies the sense buffer into the scsi_cmd
5764 * struct and pushes the scsi_done function.
5765 *
5766 * Return value:
5767 * nothing
5768 **/
5769 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5770 {
5771 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
5772 unsigned long hrrq_flags;
5773
5774 spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
5775 __ipr_erp_done(ipr_cmd);
5776 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
5777 }
5778
5779 /**
5780 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5781 * @ipr_cmd: ipr command struct
5782 *
5783 * Return value:
5784 * none
5785 **/
5786 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5787 {
5788 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5789 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5790 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5791
5792 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5793 ioarcb->data_transfer_length = 0;
5794 ioarcb->read_data_transfer_length = 0;
5795 ioarcb->ioadl_len = 0;
5796 ioarcb->read_ioadl_len = 0;
5797 ioasa->hdr.ioasc = 0;
5798 ioasa->hdr.residual_data_len = 0;
5799
5800 if (ipr_cmd->ioa_cfg->sis64)
5801 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5802 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5803 else {
5804 ioarcb->write_ioadl_addr =
5805 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5806 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5807 }
5808 }
5809
5810 /**
5811 * __ipr_erp_request_sense - Send request sense to a device
5812 * @ipr_cmd: ipr command struct
5813 *
5814 * This function sends a request sense to a device as a result
5815 * of a check condition.
5816 *
5817 * Return value:
5818 * nothing
5819 **/
5820 static void __ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5821 {
5822 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5823 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5824
5825 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5826 __ipr_erp_done(ipr_cmd);
5827 return;
5828 }
5829
5830 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5831
5832 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5833 cmd_pkt->cdb[0] = REQUEST_SENSE;
5834 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5835 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5836 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5837 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5838
5839 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5840 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
5841
5842 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5843 IPR_REQUEST_SENSE_TIMEOUT * 2);
5844 }
5845
5846 /**
5847 * ipr_erp_request_sense - Send request sense to a device
5848 * @ipr_cmd: ipr command struct
5849 *
5850 * This function sends a request sense to a device as a result
5851 * of a check condition.
5852 *
5853 * Return value:
5854 * nothing
5855 **/
5856 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5857 {
5858 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
5859 unsigned long hrrq_flags;
5860
5861 spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
5862 __ipr_erp_request_sense(ipr_cmd);
5863 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
5864 }
5865
5866 /**
5867 * ipr_erp_cancel_all - Send cancel all to a device
5868 * @ipr_cmd: ipr command struct
5869 *
5870 * This function sends a cancel all to a device to clear the
5871 * queue. If we are running TCQ on the device, QERR is set to 1,
5872 * which means all outstanding ops have been dropped on the floor.
5873 * Cancel all will return them to us.
5874 *
5875 * Return value:
5876 * nothing
5877 **/
5878 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5879 {
5880 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5881 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5882 struct ipr_cmd_pkt *cmd_pkt;
5883
5884 res->in_erp = 1;
5885
5886 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5887
5888 if (!scsi_cmd->device->simple_tags) {
5889 __ipr_erp_request_sense(ipr_cmd);
5890 return;
5891 }
5892
5893 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5894 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5895 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5896
5897 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5898 IPR_CANCEL_ALL_TIMEOUT);
5899 }
5900
5901 /**
5902 * ipr_dump_ioasa - Dump contents of IOASA
5903 * @ioa_cfg: ioa config struct
5904 * @ipr_cmd: ipr command struct
5905 * @res: resource entry struct
5906 *
5907 * This function is invoked by the interrupt handler when ops
5908 * fail. It will log the IOASA if appropriate. Only called
5909 * for GPDD ops.
5910 *
5911 * Return value:
5912 * none
5913 **/
5914 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
5915 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
5916 {
5917 int i;
5918 u16 data_len;
5919 u32 ioasc, fd_ioasc;
5920 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5921 __be32 *ioasa_data = (__be32 *)ioasa;
5922 int error_index;
5923
5924 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5925 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
5926
5927 if (0 == ioasc)
5928 return;
5929
5930 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
5931 return;
5932
5933 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
5934 error_index = ipr_get_error(fd_ioasc);
5935 else
5936 error_index = ipr_get_error(ioasc);
5937
5938 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
5939 /* Don't log an error if the IOA already logged one */
5940 if (ioasa->hdr.ilid != 0)
5941 return;
5942
5943 if (!ipr_is_gscsi(res))
5944 return;
5945
5946 if (ipr_error_table[error_index].log_ioasa == 0)
5947 return;
5948 }
5949
5950 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
5951
5952 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
5953 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
5954 data_len = sizeof(struct ipr_ioasa64);
5955 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
5956 data_len = sizeof(struct ipr_ioasa);
5957
5958 ipr_err("IOASA Dump:\n");
5959
5960 for (i = 0; i < data_len / 4; i += 4) {
5961 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
5962 be32_to_cpu(ioasa_data[i]),
5963 be32_to_cpu(ioasa_data[i+1]),
5964 be32_to_cpu(ioasa_data[i+2]),
5965 be32_to_cpu(ioasa_data[i+3]));
5966 }
5967 }
5968
5969 /**
5970 * ipr_gen_sense - Generate SCSI sense data from an IOASA
5971 * @ipr_cmd: ipr command struct
5972 *
5973 * Return value:
5974 * none
5975 **/
5976 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
5977 {
5978 u32 failing_lba;
5979 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
5980 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
5981 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5982 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
5983
5984 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
5985
5986 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
5987 return;
5988
5989 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
5990
5991 if (ipr_is_vset_device(res) &&
5992 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
5993 ioasa->u.vset.failing_lba_hi != 0) {
5994 sense_buf[0] = 0x72;
5995 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
5996 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
5997 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
5998
5999 sense_buf[7] = 12;
6000 sense_buf[8] = 0;
6001 sense_buf[9] = 0x0A;
6002 sense_buf[10] = 0x80;
6003
6004 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
6005
6006 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
6007 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
6008 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
6009 sense_buf[15] = failing_lba & 0x000000ff;
6010
6011 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6012
6013 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
6014 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
6015 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
6016 sense_buf[19] = failing_lba & 0x000000ff;
6017 } else {
6018 sense_buf[0] = 0x70;
6019 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
6020 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
6021 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
6022
6023 /* Illegal request */
6024 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
6025 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
6026 sense_buf[7] = 10; /* additional length */
6027
6028 /* IOARCB was in error */
6029 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
6030 sense_buf[15] = 0xC0;
6031 else /* Parameter data was invalid */
6032 sense_buf[15] = 0x80;
6033
6034 sense_buf[16] =
6035 ((IPR_FIELD_POINTER_MASK &
6036 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
6037 sense_buf[17] =
6038 (IPR_FIELD_POINTER_MASK &
6039 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
6040 } else {
6041 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
6042 if (ipr_is_vset_device(res))
6043 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6044 else
6045 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
6046
6047 sense_buf[0] |= 0x80; /* Or in the Valid bit */
6048 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
6049 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
6050 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
6051 sense_buf[6] = failing_lba & 0x000000ff;
6052 }
6053
6054 sense_buf[7] = 6; /* additional length */
6055 }
6056 }
6057 }
6058
6059 /**
6060 * ipr_get_autosense - Copy autosense data to sense buffer
6061 * @ipr_cmd: ipr command struct
6062 *
6063 * This function copies the autosense buffer to the buffer
6064 * in the scsi_cmd, if there is autosense available.
6065 *
6066 * Return value:
6067 * 1 if autosense was available / 0 if not
6068 **/
6069 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
6070 {
6071 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6072 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
6073
6074 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
6075 return 0;
6076
6077 if (ipr_cmd->ioa_cfg->sis64)
6078 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
6079 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
6080 SCSI_SENSE_BUFFERSIZE));
6081 else
6082 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
6083 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
6084 SCSI_SENSE_BUFFERSIZE));
6085 return 1;
6086 }
6087
6088 /**
6089 * ipr_erp_start - Process an error response for a SCSI op
6090 * @ioa_cfg: ioa config struct
6091 * @ipr_cmd: ipr command struct
6092 *
6093 * This function determines whether or not to initiate ERP
6094 * on the affected device.
6095 *
6096 * Return value:
6097 * nothing
6098 **/
6099 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
6100 struct ipr_cmnd *ipr_cmd)
6101 {
6102 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6103 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6104 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6105 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
6106
6107 if (!res) {
6108 __ipr_scsi_eh_done(ipr_cmd);
6109 return;
6110 }
6111
6112 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
6113 ipr_gen_sense(ipr_cmd);
6114
6115 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6116
6117 switch (masked_ioasc) {
6118 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
6119 if (ipr_is_naca_model(res))
6120 scsi_cmd->result |= (DID_ABORT << 16);
6121 else
6122 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6123 break;
6124 case IPR_IOASC_IR_RESOURCE_HANDLE:
6125 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
6126 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6127 break;
6128 case IPR_IOASC_HW_SEL_TIMEOUT:
6129 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6130 if (!ipr_is_naca_model(res))
6131 res->needs_sync_complete = 1;
6132 break;
6133 case IPR_IOASC_SYNC_REQUIRED:
6134 if (!res->in_erp)
6135 res->needs_sync_complete = 1;
6136 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6137 break;
6138 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
6139 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
6140 /*
6141 * exception: do not set DID_PASSTHROUGH on CHECK CONDITION
6142 * so SCSI mid-layer and upper layers handle it accordingly.
6143 */
6144 if (scsi_cmd->result != SAM_STAT_CHECK_CONDITION)
6145 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
6146 break;
6147 case IPR_IOASC_BUS_WAS_RESET:
6148 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
6149 /*
6150 * Report the bus reset and ask for a retry. The device
6151 * will give CC/UA the next command.
6152 */
6153 if (!res->resetting_device)
6154 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
6155 scsi_cmd->result |= (DID_ERROR << 16);
6156 if (!ipr_is_naca_model(res))
6157 res->needs_sync_complete = 1;
6158 break;
6159 case IPR_IOASC_HW_DEV_BUS_STATUS:
6160 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
6161 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
6162 if (!ipr_get_autosense(ipr_cmd)) {
6163 if (!ipr_is_naca_model(res)) {
6164 ipr_erp_cancel_all(ipr_cmd);
6165 return;
6166 }
6167 }
6168 }
6169 if (!ipr_is_naca_model(res))
6170 res->needs_sync_complete = 1;
6171 break;
6172 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
6173 break;
6174 case IPR_IOASC_IR_NON_OPTIMIZED:
6175 if (res->raw_mode) {
6176 res->raw_mode = 0;
6177 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6178 } else
6179 scsi_cmd->result |= (DID_ERROR << 16);
6180 break;
6181 default:
6182 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6183 scsi_cmd->result |= (DID_ERROR << 16);
6184 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
6185 res->needs_sync_complete = 1;
6186 break;
6187 }
6188
6189 scsi_dma_unmap(ipr_cmd->scsi_cmd);
6190 scsi_done(scsi_cmd);
6191 if (ipr_cmd->eh_comp)
6192 complete(ipr_cmd->eh_comp);
6193 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6194 }
6195
6196 /**
6197 * ipr_scsi_done - mid-layer done function
6198 * @ipr_cmd: ipr command struct
6199 *
6200 * This function is invoked by the interrupt handler for
6201 * ops generated by the SCSI mid-layer
6202 *
6203 * Return value:
6204 * none
6205 **/
6206 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
6207 {
6208 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6209 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6210 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6211 unsigned long lock_flags;
6212
6213 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
6214
6215 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
6216 scsi_dma_unmap(scsi_cmd);
6217
6218 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
6219 scsi_done(scsi_cmd);
6220 if (ipr_cmd->eh_comp)
6221 complete(ipr_cmd->eh_comp);
6222 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6223 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
6224 } else {
6225 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6226 spin_lock(&ipr_cmd->hrrq->_lock);
6227 ipr_erp_start(ioa_cfg, ipr_cmd);
6228 spin_unlock(&ipr_cmd->hrrq->_lock);
6229 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6230 }
6231 }
6232
6233 /**
6234 * ipr_queuecommand - Queue a mid-layer request
6235 * @shost: scsi host struct
6236 * @scsi_cmd: scsi command struct
6237 *
6238 * This function queues a request generated by the mid-layer.
6239 *
6240 * Return value:
6241 * 0 on success
6242 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
6243 * SCSI_MLQUEUE_HOST_BUSY if host is busy
6244 **/
6245 static int ipr_queuecommand(struct Scsi_Host *shost,
6246 struct scsi_cmnd *scsi_cmd)
6247 {
6248 struct ipr_ioa_cfg *ioa_cfg;
6249 struct ipr_resource_entry *res;
6250 struct ipr_ioarcb *ioarcb;
6251 struct ipr_cmnd *ipr_cmd;
6252 unsigned long hrrq_flags;
6253 int rc;
6254 struct ipr_hrr_queue *hrrq;
6255 int hrrq_id;
6256
6257 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
6258
6259 scsi_cmd->result = (DID_OK << 16);
6260 res = scsi_cmd->device->hostdata;
6261
6262 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6263 hrrq = &ioa_cfg->hrrq[hrrq_id];
6264
6265 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6266 /*
6267 * We are currently blocking all devices due to a host reset
6268 * We have told the host to stop giving us new requests, but
6269 * ERP ops don't count. FIXME
6270 */
6271 if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) {
6272 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6273 return SCSI_MLQUEUE_HOST_BUSY;
6274 }
6275
6276 /*
6277 * FIXME - Create scsi_set_host_offline interface
6278 * and the ioa_is_dead check can be removed
6279 */
6280 if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) {
6281 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6282 goto err_nodev;
6283 }
6284
6285 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6286 if (ipr_cmd == NULL) {
6287 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6288 return SCSI_MLQUEUE_HOST_BUSY;
6289 }
6290 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6291
6292 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done);
6293 ioarcb = &ipr_cmd->ioarcb;
6294
6295 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
6296 ipr_cmd->scsi_cmd = scsi_cmd;
6297 ipr_cmd->done = ipr_scsi_eh_done;
6298
6299 if (ipr_is_gscsi(res)) {
6300 if (scsi_cmd->underflow == 0)
6301 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6302
6303 if (res->reset_occurred) {
6304 res->reset_occurred = 0;
6305 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
6306 }
6307 }
6308
6309 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
6310 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6311
6312 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
6313 if (scsi_cmd->flags & SCMD_TAGGED)
6314 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK;
6315 else
6316 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK;
6317 }
6318
6319 if (scsi_cmd->cmnd[0] >= 0xC0 &&
6320 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) {
6321 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6322 }
6323 if (res->raw_mode && ipr_is_af_dasd_device(res)) {
6324 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE;
6325
6326 if (scsi_cmd->underflow == 0)
6327 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6328 }
6329
6330 if (ioa_cfg->sis64)
6331 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
6332 else
6333 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
6334
6335 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6336 if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) {
6337 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6338 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6339 if (!rc)
6340 scsi_dma_unmap(scsi_cmd);
6341 return SCSI_MLQUEUE_HOST_BUSY;
6342 }
6343
6344 if (unlikely(hrrq->ioa_is_dead)) {
6345 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6346 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6347 scsi_dma_unmap(scsi_cmd);
6348 goto err_nodev;
6349 }
6350
6351 ioarcb->res_handle = res->res_handle;
6352 if (res->needs_sync_complete) {
6353 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
6354 res->needs_sync_complete = 0;
6355 }
6356 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q);
6357 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6358 ipr_send_command(ipr_cmd);
6359 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6360 return 0;
6361
6362 err_nodev:
6363 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6364 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
6365 scsi_cmd->result = (DID_NO_CONNECT << 16);
6366 scsi_done(scsi_cmd);
6367 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6368 return 0;
6369 }
6370
6371 /**
6372 * ipr_ioa_info - Get information about the card/driver
6373 * @host: scsi host struct
6374 *
6375 * Return value:
6376 * pointer to buffer with description string
6377 **/
6378 static const char *ipr_ioa_info(struct Scsi_Host *host)
6379 {
6380 static char buffer[512];
6381 struct ipr_ioa_cfg *ioa_cfg;
6382 unsigned long lock_flags = 0;
6383
6384 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
6385
6386 spin_lock_irqsave(host->host_lock, lock_flags);
6387 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
6388 spin_unlock_irqrestore(host->host_lock, lock_flags);
6389
6390 return buffer;
6391 }
6392
6393 static const struct scsi_host_template driver_template = {
6394 .module = THIS_MODULE,
6395 .name = "IPR",
6396 .info = ipr_ioa_info,
6397 .queuecommand = ipr_queuecommand,
6398 .eh_abort_handler = ipr_eh_abort,
6399 .eh_device_reset_handler = ipr_eh_dev_reset,
6400 .eh_host_reset_handler = ipr_eh_host_reset,
6401 .slave_alloc = ipr_slave_alloc,
6402 .device_configure = ipr_device_configure,
6403 .slave_destroy = ipr_slave_destroy,
6404 .scan_finished = ipr_scan_finished,
6405 .target_destroy = ipr_target_destroy,
6406 .change_queue_depth = ipr_change_queue_depth,
6407 .bios_param = ipr_biosparam,
6408 .can_queue = IPR_MAX_COMMANDS,
6409 .this_id = -1,
6410 .sg_tablesize = IPR_MAX_SGLIST,
6411 .max_sectors = IPR_IOA_MAX_SECTORS,
6412 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
6413 .shost_groups = ipr_ioa_groups,
6414 .sdev_groups = ipr_dev_groups,
6415 .proc_name = IPR_NAME,
6416 };
6417
6418 /**
6419 * ipr_ioa_bringdown_done - IOA bring down completion.
6420 * @ipr_cmd: ipr command struct
6421 *
6422 * This function processes the completion of an adapter bring down.
6423 * It wakes any reset sleepers.
6424 *
6425 * Return value:
6426 * IPR_RC_JOB_RETURN
6427 **/
6428 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6429 {
6430 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6431 int i;
6432
6433 ENTER;
6434 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
6435 ipr_trace;
6436 ioa_cfg->scsi_unblock = 1;
6437 schedule_work(&ioa_cfg->work_q);
6438 }
6439
6440 ioa_cfg->in_reset_reload = 0;
6441 ioa_cfg->reset_retries = 0;
6442 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
6443 spin_lock(&ioa_cfg->hrrq[i]._lock);
6444 ioa_cfg->hrrq[i].ioa_is_dead = 1;
6445 spin_unlock(&ioa_cfg->hrrq[i]._lock);
6446 }
6447 wmb();
6448
6449 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6450 wake_up_all(&ioa_cfg->reset_wait_q);
6451 LEAVE;
6452
6453 return IPR_RC_JOB_RETURN;
6454 }
6455
6456 /**
6457 * ipr_ioa_reset_done - IOA reset completion.
6458 * @ipr_cmd: ipr command struct
6459 *
6460 * This function processes the completion of an adapter reset.
6461 * It schedules any necessary mid-layer add/removes and
6462 * wakes any reset sleepers.
6463 *
6464 * Return value:
6465 * IPR_RC_JOB_RETURN
6466 **/
6467 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
6468 {
6469 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6470 struct ipr_resource_entry *res;
6471 int j;
6472
6473 ENTER;
6474 ioa_cfg->in_reset_reload = 0;
6475 for (j = 0; j < ioa_cfg->hrrq_num; j++) {
6476 spin_lock(&ioa_cfg->hrrq[j]._lock);
6477 ioa_cfg->hrrq[j].allow_cmds = 1;
6478 spin_unlock(&ioa_cfg->hrrq[j]._lock);
6479 }
6480 wmb();
6481 ioa_cfg->reset_cmd = NULL;
6482 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
6483
6484 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
6485 if (res->add_to_ml || res->del_from_ml) {
6486 ipr_trace;
6487 break;
6488 }
6489 }
6490 schedule_work(&ioa_cfg->work_q);
6491
6492 for (j = 0; j < IPR_NUM_HCAMS; j++) {
6493 list_del_init(&ioa_cfg->hostrcb[j]->queue);
6494 if (j < IPR_NUM_LOG_HCAMS)
6495 ipr_send_hcam(ioa_cfg,
6496 IPR_HCAM_CDB_OP_CODE_LOG_DATA,
6497 ioa_cfg->hostrcb[j]);
6498 else
6499 ipr_send_hcam(ioa_cfg,
6500 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
6501 ioa_cfg->hostrcb[j]);
6502 }
6503
6504 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
6505 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
6506
6507 ioa_cfg->reset_retries = 0;
6508 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6509 wake_up_all(&ioa_cfg->reset_wait_q);
6510
6511 ioa_cfg->scsi_unblock = 1;
6512 schedule_work(&ioa_cfg->work_q);
6513 LEAVE;
6514 return IPR_RC_JOB_RETURN;
6515 }
6516
6517 /**
6518 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
6519 * @supported_dev: supported device struct
6520 * @vpids: vendor product id struct
6521 *
6522 * Return value:
6523 * none
6524 **/
6525 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
6526 struct ipr_std_inq_vpids *vpids)
6527 {
6528 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
6529 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
6530 supported_dev->num_records = 1;
6531 supported_dev->data_length =
6532 cpu_to_be16(sizeof(struct ipr_supported_device));
6533 supported_dev->reserved = 0;
6534 }
6535
6536 /**
6537 * ipr_set_supported_devs - Send Set Supported Devices for a device
6538 * @ipr_cmd: ipr command struct
6539 *
6540 * This function sends a Set Supported Devices to the adapter
6541 *
6542 * Return value:
6543 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6544 **/
6545 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
6546 {
6547 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6548 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
6549 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6550 struct ipr_resource_entry *res = ipr_cmd->u.res;
6551
6552 ipr_cmd->job_step = ipr_ioa_reset_done;
6553
6554 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
6555 if (!ipr_is_scsi_disk(res))
6556 continue;
6557
6558 ipr_cmd->u.res = res;
6559 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
6560
6561 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6562 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6563 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6564
6565 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
6566 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
6567 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
6568 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
6569
6570 ipr_init_ioadl(ipr_cmd,
6571 ioa_cfg->vpd_cbs_dma +
6572 offsetof(struct ipr_misc_cbs, supp_dev),
6573 sizeof(struct ipr_supported_device),
6574 IPR_IOADL_FLAGS_WRITE_LAST);
6575
6576 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6577 IPR_SET_SUP_DEVICE_TIMEOUT);
6578
6579 if (!ioa_cfg->sis64)
6580 ipr_cmd->job_step = ipr_set_supported_devs;
6581 LEAVE;
6582 return IPR_RC_JOB_RETURN;
6583 }
6584
6585 LEAVE;
6586 return IPR_RC_JOB_CONTINUE;
6587 }
6588
6589 /**
6590 * ipr_get_mode_page - Locate specified mode page
6591 * @mode_pages: mode page buffer
6592 * @page_code: page code to find
6593 * @len: minimum required length for mode page
6594 *
6595 * Return value:
6596 * pointer to mode page / NULL on failure
6597 **/
6598 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
6599 u32 page_code, u32 len)
6600 {
6601 struct ipr_mode_page_hdr *mode_hdr;
6602 u32 page_length;
6603 u32 length;
6604
6605 if (!mode_pages || (mode_pages->hdr.length == 0))
6606 return NULL;
6607
6608 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
6609 mode_hdr = (struct ipr_mode_page_hdr *)
6610 (mode_pages->data + mode_pages->hdr.block_desc_len);
6611
6612 while (length) {
6613 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
6614 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
6615 return mode_hdr;
6616 break;
6617 } else {
6618 page_length = (sizeof(struct ipr_mode_page_hdr) +
6619 mode_hdr->page_length);
6620 length -= page_length;
6621 mode_hdr = (struct ipr_mode_page_hdr *)
6622 ((unsigned long)mode_hdr + page_length);
6623 }
6624 }
6625 return NULL;
6626 }
6627
6628 /**
6629 * ipr_check_term_power - Check for term power errors
6630 * @ioa_cfg: ioa config struct
6631 * @mode_pages: IOAFP mode pages buffer
6632 *
6633 * Check the IOAFP's mode page 28 for term power errors
6634 *
6635 * Return value:
6636 * nothing
6637 **/
6638 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
6639 struct ipr_mode_pages *mode_pages)
6640 {
6641 int i;
6642 int entry_length;
6643 struct ipr_dev_bus_entry *bus;
6644 struct ipr_mode_page28 *mode_page;
6645
6646 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6647 sizeof(struct ipr_mode_page28));
6648
6649 entry_length = mode_page->entry_length;
6650
6651 bus = mode_page->bus;
6652
6653 for (i = 0; i < mode_page->num_entries; i++) {
6654 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
6655 dev_err(&ioa_cfg->pdev->dev,
6656 "Term power is absent on scsi bus %d\n",
6657 bus->res_addr.bus);
6658 }
6659
6660 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
6661 }
6662 }
6663
6664 /**
6665 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
6666 * @ioa_cfg: ioa config struct
6667 *
6668 * Looks through the config table checking for SES devices. If
6669 * the SES device is in the SES table indicating a maximum SCSI
6670 * bus speed, the speed is limited for the bus.
6671 *
6672 * Return value:
6673 * none
6674 **/
6675 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
6676 {
6677 u32 max_xfer_rate;
6678 int i;
6679
6680 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
6681 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
6682 ioa_cfg->bus_attr[i].bus_width);
6683
6684 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
6685 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
6686 }
6687 }
6688
6689 /**
6690 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
6691 * @ioa_cfg: ioa config struct
6692 * @mode_pages: mode page 28 buffer
6693 *
6694 * Updates mode page 28 based on driver configuration
6695 *
6696 * Return value:
6697 * none
6698 **/
6699 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
6700 struct ipr_mode_pages *mode_pages)
6701 {
6702 int i, entry_length;
6703 struct ipr_dev_bus_entry *bus;
6704 struct ipr_bus_attributes *bus_attr;
6705 struct ipr_mode_page28 *mode_page;
6706
6707 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6708 sizeof(struct ipr_mode_page28));
6709
6710 entry_length = mode_page->entry_length;
6711
6712 /* Loop for each device bus entry */
6713 for (i = 0, bus = mode_page->bus;
6714 i < mode_page->num_entries;
6715 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
6716 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
6717 dev_err(&ioa_cfg->pdev->dev,
6718 "Invalid resource address reported: 0x%08X\n",
6719 IPR_GET_PHYS_LOC(bus->res_addr));
6720 continue;
6721 }
6722
6723 bus_attr = &ioa_cfg->bus_attr[i];
6724 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
6725 bus->bus_width = bus_attr->bus_width;
6726 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
6727 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
6728 if (bus_attr->qas_enabled)
6729 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
6730 else
6731 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
6732 }
6733 }
6734
6735 /**
6736 * ipr_build_mode_select - Build a mode select command
6737 * @ipr_cmd: ipr command struct
6738 * @res_handle: resource handle to send command to
6739 * @parm: Byte 2 of Mode Sense command
6740 * @dma_addr: DMA buffer address
6741 * @xfer_len: data transfer length
6742 *
6743 * Return value:
6744 * none
6745 **/
6746 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
6747 __be32 res_handle, u8 parm,
6748 dma_addr_t dma_addr, u8 xfer_len)
6749 {
6750 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6751
6752 ioarcb->res_handle = res_handle;
6753 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6754 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6755 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
6756 ioarcb->cmd_pkt.cdb[1] = parm;
6757 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6758
6759 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
6760 }
6761
6762 /**
6763 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
6764 * @ipr_cmd: ipr command struct
6765 *
6766 * This function sets up the SCSI bus attributes and sends
6767 * a Mode Select for Page 28 to activate them.
6768 *
6769 * Return value:
6770 * IPR_RC_JOB_RETURN
6771 **/
6772 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
6773 {
6774 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6775 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6776 int length;
6777
6778 ENTER;
6779 ipr_scsi_bus_speed_limit(ioa_cfg);
6780 ipr_check_term_power(ioa_cfg, mode_pages);
6781 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
6782 length = mode_pages->hdr.length + 1;
6783 mode_pages->hdr.length = 0;
6784
6785 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6786 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6787 length);
6788
6789 ipr_cmd->job_step = ipr_set_supported_devs;
6790 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6791 struct ipr_resource_entry, queue);
6792 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6793
6794 LEAVE;
6795 return IPR_RC_JOB_RETURN;
6796 }
6797
6798 /**
6799 * ipr_build_mode_sense - Builds a mode sense command
6800 * @ipr_cmd: ipr command struct
6801 * @res_handle: resource entry struct
6802 * @parm: Byte 2 of mode sense command
6803 * @dma_addr: DMA address of mode sense buffer
6804 * @xfer_len: Size of DMA buffer
6805 *
6806 * Return value:
6807 * none
6808 **/
6809 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
6810 __be32 res_handle,
6811 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
6812 {
6813 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6814
6815 ioarcb->res_handle = res_handle;
6816 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
6817 ioarcb->cmd_pkt.cdb[2] = parm;
6818 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6819 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6820
6821 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
6822 }
6823
6824 /**
6825 * ipr_reset_cmd_failed - Handle failure of IOA reset command
6826 * @ipr_cmd: ipr command struct
6827 *
6828 * This function handles the failure of an IOA bringup command.
6829 *
6830 * Return value:
6831 * IPR_RC_JOB_RETURN
6832 **/
6833 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
6834 {
6835 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6836 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6837
6838 dev_err(&ioa_cfg->pdev->dev,
6839 "0x%02X failed with IOASC: 0x%08X\n",
6840 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
6841
6842 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6843 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6844 return IPR_RC_JOB_RETURN;
6845 }
6846
6847 /**
6848 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
6849 * @ipr_cmd: ipr command struct
6850 *
6851 * This function handles the failure of a Mode Sense to the IOAFP.
6852 * Some adapters do not handle all mode pages.
6853 *
6854 * Return value:
6855 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6856 **/
6857 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
6858 {
6859 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6860 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6861
6862 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6863 ipr_cmd->job_step = ipr_set_supported_devs;
6864 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6865 struct ipr_resource_entry, queue);
6866 return IPR_RC_JOB_CONTINUE;
6867 }
6868
6869 return ipr_reset_cmd_failed(ipr_cmd);
6870 }
6871
6872 /**
6873 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
6874 * @ipr_cmd: ipr command struct
6875 *
6876 * This function send a Page 28 mode sense to the IOA to
6877 * retrieve SCSI bus attributes.
6878 *
6879 * Return value:
6880 * IPR_RC_JOB_RETURN
6881 **/
6882 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
6883 {
6884 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6885
6886 ENTER;
6887 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6888 0x28, ioa_cfg->vpd_cbs_dma +
6889 offsetof(struct ipr_misc_cbs, mode_pages),
6890 sizeof(struct ipr_mode_pages));
6891
6892 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
6893 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
6894
6895 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6896
6897 LEAVE;
6898 return IPR_RC_JOB_RETURN;
6899 }
6900
6901 /**
6902 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
6903 * @ipr_cmd: ipr command struct
6904 *
6905 * This function enables dual IOA RAID support if possible.
6906 *
6907 * Return value:
6908 * IPR_RC_JOB_RETURN
6909 **/
6910 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
6911 {
6912 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6913 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6914 struct ipr_mode_page24 *mode_page;
6915 int length;
6916
6917 ENTER;
6918 mode_page = ipr_get_mode_page(mode_pages, 0x24,
6919 sizeof(struct ipr_mode_page24));
6920
6921 if (mode_page)
6922 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
6923
6924 length = mode_pages->hdr.length + 1;
6925 mode_pages->hdr.length = 0;
6926
6927 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6928 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6929 length);
6930
6931 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6932 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6933
6934 LEAVE;
6935 return IPR_RC_JOB_RETURN;
6936 }
6937
6938 /**
6939 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
6940 * @ipr_cmd: ipr command struct
6941 *
6942 * This function handles the failure of a Mode Sense to the IOAFP.
6943 * Some adapters do not handle all mode pages.
6944 *
6945 * Return value:
6946 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6947 **/
6948 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
6949 {
6950 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6951
6952 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6953 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6954 return IPR_RC_JOB_CONTINUE;
6955 }
6956
6957 return ipr_reset_cmd_failed(ipr_cmd);
6958 }
6959
6960 /**
6961 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
6962 * @ipr_cmd: ipr command struct
6963 *
6964 * This function send a mode sense to the IOA to retrieve
6965 * the IOA Advanced Function Control mode page.
6966 *
6967 * Return value:
6968 * IPR_RC_JOB_RETURN
6969 **/
6970 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
6971 {
6972 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6973
6974 ENTER;
6975 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6976 0x24, ioa_cfg->vpd_cbs_dma +
6977 offsetof(struct ipr_misc_cbs, mode_pages),
6978 sizeof(struct ipr_mode_pages));
6979
6980 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
6981 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
6982
6983 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6984
6985 LEAVE;
6986 return IPR_RC_JOB_RETURN;
6987 }
6988
6989 /**
6990 * ipr_init_res_table - Initialize the resource table
6991 * @ipr_cmd: ipr command struct
6992 *
6993 * This function looks through the existing resource table, comparing
6994 * it with the config table. This function will take care of old/new
6995 * devices and schedule adding/removing them from the mid-layer
6996 * as appropriate.
6997 *
6998 * Return value:
6999 * IPR_RC_JOB_CONTINUE
7000 **/
7001 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
7002 {
7003 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7004 struct ipr_resource_entry *res, *temp;
7005 struct ipr_config_table_entry_wrapper cfgtew;
7006 int entries, found, flag, i;
7007 LIST_HEAD(old_res);
7008
7009 ENTER;
7010 if (ioa_cfg->sis64)
7011 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
7012 else
7013 flag = ioa_cfg->u.cfg_table->hdr.flags;
7014
7015 if (flag & IPR_UCODE_DOWNLOAD_REQ)
7016 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
7017
7018 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
7019 list_move_tail(&res->queue, &old_res);
7020
7021 if (ioa_cfg->sis64)
7022 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
7023 else
7024 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
7025
7026 for (i = 0; i < entries; i++) {
7027 if (ioa_cfg->sis64)
7028 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
7029 else
7030 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
7031 found = 0;
7032
7033 list_for_each_entry_safe(res, temp, &old_res, queue) {
7034 if (ipr_is_same_device(res, &cfgtew)) {
7035 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7036 found = 1;
7037 break;
7038 }
7039 }
7040
7041 if (!found) {
7042 if (list_empty(&ioa_cfg->free_res_q)) {
7043 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
7044 break;
7045 }
7046
7047 found = 1;
7048 res = list_entry(ioa_cfg->free_res_q.next,
7049 struct ipr_resource_entry, queue);
7050 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7051 ipr_init_res_entry(res, &cfgtew);
7052 res->add_to_ml = 1;
7053 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
7054 res->sdev->allow_restart = 1;
7055
7056 if (found)
7057 ipr_update_res_entry(res, &cfgtew);
7058 }
7059
7060 list_for_each_entry_safe(res, temp, &old_res, queue) {
7061 if (res->sdev) {
7062 res->del_from_ml = 1;
7063 res->res_handle = IPR_INVALID_RES_HANDLE;
7064 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7065 }
7066 }
7067
7068 list_for_each_entry_safe(res, temp, &old_res, queue) {
7069 ipr_clear_res_target(res);
7070 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
7071 }
7072
7073 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7074 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
7075 else
7076 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7077
7078 LEAVE;
7079 return IPR_RC_JOB_CONTINUE;
7080 }
7081
7082 /**
7083 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
7084 * @ipr_cmd: ipr command struct
7085 *
7086 * This function sends a Query IOA Configuration command
7087 * to the adapter to retrieve the IOA configuration table.
7088 *
7089 * Return value:
7090 * IPR_RC_JOB_RETURN
7091 **/
7092 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
7093 {
7094 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7095 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7096 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7097 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7098
7099 ENTER;
7100 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7101 ioa_cfg->dual_raid = 1;
7102 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7103 ucode_vpd->major_release, ucode_vpd->card_type,
7104 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7105 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7106 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7107
7108 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7109 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7110 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7111 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7112
7113 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7114 IPR_IOADL_FLAGS_READ_LAST);
7115
7116 ipr_cmd->job_step = ipr_init_res_table;
7117
7118 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7119
7120 LEAVE;
7121 return IPR_RC_JOB_RETURN;
7122 }
7123
7124 static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd)
7125 {
7126 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7127
7128 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT)
7129 return IPR_RC_JOB_CONTINUE;
7130
7131 return ipr_reset_cmd_failed(ipr_cmd);
7132 }
7133
7134 static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd,
7135 __be32 res_handle, u8 sa_code)
7136 {
7137 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7138
7139 ioarcb->res_handle = res_handle;
7140 ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION;
7141 ioarcb->cmd_pkt.cdb[1] = sa_code;
7142 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7143 }
7144
7145 /**
7146 * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service
7147 * action
7148 * @ipr_cmd: ipr command struct
7149 *
7150 * Return value:
7151 * none
7152 **/
7153 static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd)
7154 {
7155 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7156 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7157 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7158
7159 ENTER;
7160
7161 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7162
7163 if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) {
7164 ipr_build_ioa_service_action(ipr_cmd,
7165 cpu_to_be32(IPR_IOA_RES_HANDLE),
7166 IPR_IOA_SA_CHANGE_CACHE_PARAMS);
7167
7168 ioarcb->cmd_pkt.cdb[2] = 0x40;
7169
7170 ipr_cmd->job_step_failed = ipr_ioa_service_action_failed;
7171 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7172 IPR_SET_SUP_DEVICE_TIMEOUT);
7173
7174 LEAVE;
7175 return IPR_RC_JOB_RETURN;
7176 }
7177
7178 LEAVE;
7179 return IPR_RC_JOB_CONTINUE;
7180 }
7181
7182 /**
7183 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7184 * @ipr_cmd: ipr command struct
7185 * @flags: flags to send
7186 * @page: page to inquire
7187 * @dma_addr: DMA address
7188 * @xfer_len: transfer data length
7189 *
7190 * This utility function sends an inquiry to the adapter.
7191 *
7192 * Return value:
7193 * none
7194 **/
7195 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7196 dma_addr_t dma_addr, u8 xfer_len)
7197 {
7198 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7199
7200 ENTER;
7201 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7202 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7203
7204 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7205 ioarcb->cmd_pkt.cdb[1] = flags;
7206 ioarcb->cmd_pkt.cdb[2] = page;
7207 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7208
7209 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7210
7211 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7212 LEAVE;
7213 }
7214
7215 /**
7216 * ipr_inquiry_page_supported - Is the given inquiry page supported
7217 * @page0: inquiry page 0 buffer
7218 * @page: page code.
7219 *
7220 * This function determines if the specified inquiry page is supported.
7221 *
7222 * Return value:
7223 * 1 if page is supported / 0 if not
7224 **/
7225 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7226 {
7227 int i;
7228
7229 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7230 if (page0->page[i] == page)
7231 return 1;
7232
7233 return 0;
7234 }
7235
7236 /**
7237 * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter.
7238 * @ipr_cmd: ipr command struct
7239 *
7240 * This function sends a Page 0xC4 inquiry to the adapter
7241 * to retrieve software VPD information.
7242 *
7243 * Return value:
7244 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7245 **/
7246 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd)
7247 {
7248 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7249 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7250 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7251
7252 ENTER;
7253 ipr_cmd->job_step = ipr_ioafp_set_caching_parameters;
7254 memset(pageC4, 0, sizeof(*pageC4));
7255
7256 if (ipr_inquiry_page_supported(page0, 0xC4)) {
7257 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4,
7258 (ioa_cfg->vpd_cbs_dma
7259 + offsetof(struct ipr_misc_cbs,
7260 pageC4_data)),
7261 sizeof(struct ipr_inquiry_pageC4));
7262 return IPR_RC_JOB_RETURN;
7263 }
7264
7265 LEAVE;
7266 return IPR_RC_JOB_CONTINUE;
7267 }
7268
7269 /**
7270 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7271 * @ipr_cmd: ipr command struct
7272 *
7273 * This function sends a Page 0xD0 inquiry to the adapter
7274 * to retrieve adapter capabilities.
7275 *
7276 * Return value:
7277 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7278 **/
7279 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7280 {
7281 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7282 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7283 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7284
7285 ENTER;
7286 ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry;
7287 memset(cap, 0, sizeof(*cap));
7288
7289 if (ipr_inquiry_page_supported(page0, 0xD0)) {
7290 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7291 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7292 sizeof(struct ipr_inquiry_cap));
7293 return IPR_RC_JOB_RETURN;
7294 }
7295
7296 LEAVE;
7297 return IPR_RC_JOB_CONTINUE;
7298 }
7299
7300 /**
7301 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7302 * @ipr_cmd: ipr command struct
7303 *
7304 * This function sends a Page 3 inquiry to the adapter
7305 * to retrieve software VPD information.
7306 *
7307 * Return value:
7308 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7309 **/
7310 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7311 {
7312 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7313
7314 ENTER;
7315
7316 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7317
7318 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7319 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7320 sizeof(struct ipr_inquiry_page3));
7321
7322 LEAVE;
7323 return IPR_RC_JOB_RETURN;
7324 }
7325
7326 /**
7327 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7328 * @ipr_cmd: ipr command struct
7329 *
7330 * This function sends a Page 0 inquiry to the adapter
7331 * to retrieve supported inquiry pages.
7332 *
7333 * Return value:
7334 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7335 **/
7336 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7337 {
7338 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7339 char type[5];
7340
7341 ENTER;
7342
7343 /* Grab the type out of the VPD and store it away */
7344 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7345 type[4] = '\0';
7346 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7347
7348 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
7349
7350 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7351 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7352 sizeof(struct ipr_inquiry_page0));
7353
7354 LEAVE;
7355 return IPR_RC_JOB_RETURN;
7356 }
7357
7358 /**
7359 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7360 * @ipr_cmd: ipr command struct
7361 *
7362 * This function sends a standard inquiry to the adapter.
7363 *
7364 * Return value:
7365 * IPR_RC_JOB_RETURN
7366 **/
7367 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7368 {
7369 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7370
7371 ENTER;
7372 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
7373
7374 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7375 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7376 sizeof(struct ipr_ioa_vpd));
7377
7378 LEAVE;
7379 return IPR_RC_JOB_RETURN;
7380 }
7381
7382 /**
7383 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
7384 * @ipr_cmd: ipr command struct
7385 *
7386 * This function send an Identify Host Request Response Queue
7387 * command to establish the HRRQ with the adapter.
7388 *
7389 * Return value:
7390 * IPR_RC_JOB_RETURN
7391 **/
7392 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
7393 {
7394 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7395 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7396 struct ipr_hrr_queue *hrrq;
7397
7398 ENTER;
7399 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7400 if (ioa_cfg->identify_hrrq_index == 0)
7401 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7402
7403 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) {
7404 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index];
7405
7406 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7407 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7408
7409 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7410 if (ioa_cfg->sis64)
7411 ioarcb->cmd_pkt.cdb[1] = 0x1;
7412
7413 if (ioa_cfg->nvectors == 1)
7414 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE;
7415 else
7416 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE;
7417
7418 ioarcb->cmd_pkt.cdb[2] =
7419 ((u64) hrrq->host_rrq_dma >> 24) & 0xff;
7420 ioarcb->cmd_pkt.cdb[3] =
7421 ((u64) hrrq->host_rrq_dma >> 16) & 0xff;
7422 ioarcb->cmd_pkt.cdb[4] =
7423 ((u64) hrrq->host_rrq_dma >> 8) & 0xff;
7424 ioarcb->cmd_pkt.cdb[5] =
7425 ((u64) hrrq->host_rrq_dma) & 0xff;
7426 ioarcb->cmd_pkt.cdb[7] =
7427 ((sizeof(u32) * hrrq->size) >> 8) & 0xff;
7428 ioarcb->cmd_pkt.cdb[8] =
7429 (sizeof(u32) * hrrq->size) & 0xff;
7430
7431 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
7432 ioarcb->cmd_pkt.cdb[9] =
7433 ioa_cfg->identify_hrrq_index;
7434
7435 if (ioa_cfg->sis64) {
7436 ioarcb->cmd_pkt.cdb[10] =
7437 ((u64) hrrq->host_rrq_dma >> 56) & 0xff;
7438 ioarcb->cmd_pkt.cdb[11] =
7439 ((u64) hrrq->host_rrq_dma >> 48) & 0xff;
7440 ioarcb->cmd_pkt.cdb[12] =
7441 ((u64) hrrq->host_rrq_dma >> 40) & 0xff;
7442 ioarcb->cmd_pkt.cdb[13] =
7443 ((u64) hrrq->host_rrq_dma >> 32) & 0xff;
7444 }
7445
7446 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
7447 ioarcb->cmd_pkt.cdb[14] =
7448 ioa_cfg->identify_hrrq_index;
7449
7450 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7451 IPR_INTERNAL_TIMEOUT);
7452
7453 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num)
7454 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7455
7456 LEAVE;
7457 return IPR_RC_JOB_RETURN;
7458 }
7459
7460 LEAVE;
7461 return IPR_RC_JOB_CONTINUE;
7462 }
7463
7464 /**
7465 * ipr_reset_timer_done - Adapter reset timer function
7466 * @t: Timer context used to fetch ipr command struct
7467 *
7468 * Description: This function is used in adapter reset processing
7469 * for timing events. If the reset_cmd pointer in the IOA
7470 * config struct is not this adapter's we are doing nested
7471 * resets and fail_all_ops will take care of freeing the
7472 * command block.
7473 *
7474 * Return value:
7475 * none
7476 **/
7477 static void ipr_reset_timer_done(struct timer_list *t)
7478 {
7479 struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
7480 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7481 unsigned long lock_flags = 0;
7482
7483 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7484
7485 if (ioa_cfg->reset_cmd == ipr_cmd) {
7486 list_del(&ipr_cmd->queue);
7487 ipr_cmd->done(ipr_cmd);
7488 }
7489
7490 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7491 }
7492
7493 /**
7494 * ipr_reset_start_timer - Start a timer for adapter reset job
7495 * @ipr_cmd: ipr command struct
7496 * @timeout: timeout value
7497 *
7498 * Description: This function is used in adapter reset processing
7499 * for timing events. If the reset_cmd pointer in the IOA
7500 * config struct is not this adapter's we are doing nested
7501 * resets and fail_all_ops will take care of freeing the
7502 * command block.
7503 *
7504 * Return value:
7505 * none
7506 **/
7507 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
7508 unsigned long timeout)
7509 {
7510
7511 ENTER;
7512 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
7513 ipr_cmd->done = ipr_reset_ioa_job;
7514
7515 ipr_cmd->timer.expires = jiffies + timeout;
7516 ipr_cmd->timer.function = ipr_reset_timer_done;
7517 add_timer(&ipr_cmd->timer);
7518 }
7519
7520 /**
7521 * ipr_init_ioa_mem - Initialize ioa_cfg control block
7522 * @ioa_cfg: ioa cfg struct
7523 *
7524 * Return value:
7525 * nothing
7526 **/
7527 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
7528 {
7529 struct ipr_hrr_queue *hrrq;
7530
7531 for_each_hrrq(hrrq, ioa_cfg) {
7532 spin_lock(&hrrq->_lock);
7533 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size);
7534
7535 /* Initialize Host RRQ pointers */
7536 hrrq->hrrq_start = hrrq->host_rrq;
7537 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1];
7538 hrrq->hrrq_curr = hrrq->hrrq_start;
7539 hrrq->toggle_bit = 1;
7540 spin_unlock(&hrrq->_lock);
7541 }
7542 wmb();
7543
7544 ioa_cfg->identify_hrrq_index = 0;
7545 if (ioa_cfg->hrrq_num == 1)
7546 atomic_set(&ioa_cfg->hrrq_index, 0);
7547 else
7548 atomic_set(&ioa_cfg->hrrq_index, 1);
7549
7550 /* Zero out config table */
7551 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
7552 }
7553
7554 /**
7555 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
7556 * @ipr_cmd: ipr command struct
7557 *
7558 * Return value:
7559 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7560 **/
7561 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
7562 {
7563 unsigned long stage, stage_time;
7564 u32 feedback;
7565 volatile u32 int_reg;
7566 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7567 u64 maskval = 0;
7568
7569 feedback = readl(ioa_cfg->regs.init_feedback_reg);
7570 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
7571 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
7572
7573 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
7574
7575 /* sanity check the stage_time value */
7576 if (stage_time == 0)
7577 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
7578 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
7579 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
7580 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
7581 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
7582
7583 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
7584 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
7585 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7586 stage_time = ioa_cfg->transop_timeout;
7587 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7588 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
7589 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7590 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7591 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7592 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7593 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
7594 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
7595 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7596 return IPR_RC_JOB_CONTINUE;
7597 }
7598 }
7599
7600 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
7601 ipr_cmd->timer.function = ipr_oper_timeout;
7602 ipr_cmd->done = ipr_reset_ioa_job;
7603 add_timer(&ipr_cmd->timer);
7604
7605 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
7606
7607 return IPR_RC_JOB_RETURN;
7608 }
7609
7610 /**
7611 * ipr_reset_enable_ioa - Enable the IOA following a reset.
7612 * @ipr_cmd: ipr command struct
7613 *
7614 * This function reinitializes some control blocks and
7615 * enables destructive diagnostics on the adapter.
7616 *
7617 * Return value:
7618 * IPR_RC_JOB_RETURN
7619 **/
7620 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
7621 {
7622 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7623 volatile u32 int_reg;
7624 volatile u64 maskval;
7625 int i;
7626
7627 ENTER;
7628 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7629 ipr_init_ioa_mem(ioa_cfg);
7630
7631 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
7632 spin_lock(&ioa_cfg->hrrq[i]._lock);
7633 ioa_cfg->hrrq[i].allow_interrupts = 1;
7634 spin_unlock(&ioa_cfg->hrrq[i]._lock);
7635 }
7636 if (ioa_cfg->sis64) {
7637 /* Set the adapter to the correct endian mode. */
7638 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7639 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7640 }
7641
7642 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7643
7644 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7645 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
7646 ioa_cfg->regs.clr_interrupt_mask_reg32);
7647 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7648 return IPR_RC_JOB_CONTINUE;
7649 }
7650
7651 /* Enable destructive diagnostics on IOA */
7652 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
7653
7654 if (ioa_cfg->sis64) {
7655 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7656 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
7657 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
7658 } else
7659 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
7660
7661 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7662
7663 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
7664
7665 if (ioa_cfg->sis64) {
7666 ipr_cmd->job_step = ipr_reset_next_stage;
7667 return IPR_RC_JOB_CONTINUE;
7668 }
7669
7670 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
7671 ipr_cmd->timer.function = ipr_oper_timeout;
7672 ipr_cmd->done = ipr_reset_ioa_job;
7673 add_timer(&ipr_cmd->timer);
7674 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
7675
7676 LEAVE;
7677 return IPR_RC_JOB_RETURN;
7678 }
7679
7680 /**
7681 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
7682 * @ipr_cmd: ipr command struct
7683 *
7684 * This function is invoked when an adapter dump has run out
7685 * of processing time.
7686 *
7687 * Return value:
7688 * IPR_RC_JOB_CONTINUE
7689 **/
7690 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
7691 {
7692 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7693
7694 if (ioa_cfg->sdt_state == GET_DUMP)
7695 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7696 else if (ioa_cfg->sdt_state == READ_DUMP)
7697 ioa_cfg->sdt_state = ABORT_DUMP;
7698
7699 ioa_cfg->dump_timeout = 1;
7700 ipr_cmd->job_step = ipr_reset_alert;
7701
7702 return IPR_RC_JOB_CONTINUE;
7703 }
7704
7705 /**
7706 * ipr_unit_check_no_data - Log a unit check/no data error log
7707 * @ioa_cfg: ioa config struct
7708 *
7709 * Logs an error indicating the adapter unit checked, but for some
7710 * reason, we were unable to fetch the unit check buffer.
7711 *
7712 * Return value:
7713 * nothing
7714 **/
7715 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
7716 {
7717 ioa_cfg->errors_logged++;
7718 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
7719 }
7720
7721 /**
7722 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
7723 * @ioa_cfg: ioa config struct
7724 *
7725 * Fetches the unit check buffer from the adapter by clocking the data
7726 * through the mailbox register.
7727 *
7728 * Return value:
7729 * nothing
7730 **/
7731 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
7732 {
7733 unsigned long mailbox;
7734 struct ipr_hostrcb *hostrcb;
7735 struct ipr_uc_sdt sdt;
7736 int rc, length;
7737 u32 ioasc;
7738
7739 mailbox = readl(ioa_cfg->ioa_mailbox);
7740
7741 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
7742 ipr_unit_check_no_data(ioa_cfg);
7743 return;
7744 }
7745
7746 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
7747 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
7748 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
7749
7750 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
7751 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
7752 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
7753 ipr_unit_check_no_data(ioa_cfg);
7754 return;
7755 }
7756
7757 /* Find length of the first sdt entry (UC buffer) */
7758 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
7759 length = be32_to_cpu(sdt.entry[0].end_token);
7760 else
7761 length = (be32_to_cpu(sdt.entry[0].end_token) -
7762 be32_to_cpu(sdt.entry[0].start_token)) &
7763 IPR_FMT2_MBX_ADDR_MASK;
7764
7765 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
7766 struct ipr_hostrcb, queue);
7767 list_del_init(&hostrcb->queue);
7768 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
7769
7770 rc = ipr_get_ldump_data_section(ioa_cfg,
7771 be32_to_cpu(sdt.entry[0].start_token),
7772 (__be32 *)&hostrcb->hcam,
7773 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
7774
7775 if (!rc) {
7776 ipr_handle_log_data(ioa_cfg, hostrcb);
7777 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
7778 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
7779 ioa_cfg->sdt_state == GET_DUMP)
7780 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7781 } else
7782 ipr_unit_check_no_data(ioa_cfg);
7783
7784 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
7785 }
7786
7787 /**
7788 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
7789 * @ipr_cmd: ipr command struct
7790 *
7791 * Description: This function will call to get the unit check buffer.
7792 *
7793 * Return value:
7794 * IPR_RC_JOB_RETURN
7795 **/
7796 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
7797 {
7798 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7799
7800 ENTER;
7801 ioa_cfg->ioa_unit_checked = 0;
7802 ipr_get_unit_check_buffer(ioa_cfg);
7803 ipr_cmd->job_step = ipr_reset_alert;
7804 ipr_reset_start_timer(ipr_cmd, 0);
7805
7806 LEAVE;
7807 return IPR_RC_JOB_RETURN;
7808 }
7809
7810 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd)
7811 {
7812 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7813
7814 ENTER;
7815
7816 if (ioa_cfg->sdt_state != GET_DUMP)
7817 return IPR_RC_JOB_RETURN;
7818
7819 if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left ||
7820 (readl(ioa_cfg->regs.sense_interrupt_reg) &
7821 IPR_PCII_MAILBOX_STABLE)) {
7822
7823 if (!ipr_cmd->u.time_left)
7824 dev_err(&ioa_cfg->pdev->dev,
7825 "Timed out waiting for Mailbox register.\n");
7826
7827 ioa_cfg->sdt_state = READ_DUMP;
7828 ioa_cfg->dump_timeout = 0;
7829 if (ioa_cfg->sis64)
7830 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
7831 else
7832 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
7833 ipr_cmd->job_step = ipr_reset_wait_for_dump;
7834 schedule_work(&ioa_cfg->work_q);
7835
7836 } else {
7837 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
7838 ipr_reset_start_timer(ipr_cmd,
7839 IPR_CHECK_FOR_RESET_TIMEOUT);
7840 }
7841
7842 LEAVE;
7843 return IPR_RC_JOB_RETURN;
7844 }
7845
7846 /**
7847 * ipr_reset_restore_cfg_space - Restore PCI config space.
7848 * @ipr_cmd: ipr command struct
7849 *
7850 * Description: This function restores the saved PCI config space of
7851 * the adapter, fails all outstanding ops back to the callers, and
7852 * fetches the dump/unit check if applicable to this reset.
7853 *
7854 * Return value:
7855 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7856 **/
7857 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
7858 {
7859 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7860
7861 ENTER;
7862 ioa_cfg->pdev->state_saved = true;
7863 pci_restore_state(ioa_cfg->pdev);
7864
7865 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
7866 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7867 return IPR_RC_JOB_CONTINUE;
7868 }
7869
7870 ipr_fail_all_ops(ioa_cfg);
7871
7872 if (ioa_cfg->sis64) {
7873 /* Set the adapter to the correct endian mode. */
7874 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7875 readl(ioa_cfg->regs.endian_swap_reg);
7876 }
7877
7878 if (ioa_cfg->ioa_unit_checked) {
7879 if (ioa_cfg->sis64) {
7880 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
7881 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
7882 return IPR_RC_JOB_RETURN;
7883 } else {
7884 ioa_cfg->ioa_unit_checked = 0;
7885 ipr_get_unit_check_buffer(ioa_cfg);
7886 ipr_cmd->job_step = ipr_reset_alert;
7887 ipr_reset_start_timer(ipr_cmd, 0);
7888 return IPR_RC_JOB_RETURN;
7889 }
7890 }
7891
7892 if (ioa_cfg->in_ioa_bringdown) {
7893 ipr_cmd->job_step = ipr_ioa_bringdown_done;
7894 } else if (ioa_cfg->sdt_state == GET_DUMP) {
7895 ipr_cmd->job_step = ipr_dump_mailbox_wait;
7896 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX;
7897 } else {
7898 ipr_cmd->job_step = ipr_reset_enable_ioa;
7899 }
7900
7901 LEAVE;
7902 return IPR_RC_JOB_CONTINUE;
7903 }
7904
7905 /**
7906 * ipr_reset_bist_done - BIST has completed on the adapter.
7907 * @ipr_cmd: ipr command struct
7908 *
7909 * Description: Unblock config space and resume the reset process.
7910 *
7911 * Return value:
7912 * IPR_RC_JOB_CONTINUE
7913 **/
7914 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
7915 {
7916 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7917
7918 ENTER;
7919 if (ioa_cfg->cfg_locked)
7920 pci_cfg_access_unlock(ioa_cfg->pdev);
7921 ioa_cfg->cfg_locked = 0;
7922 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
7923 LEAVE;
7924 return IPR_RC_JOB_CONTINUE;
7925 }
7926
7927 /**
7928 * ipr_reset_start_bist - Run BIST on the adapter.
7929 * @ipr_cmd: ipr command struct
7930 *
7931 * Description: This function runs BIST on the adapter, then delays 2 seconds.
7932 *
7933 * Return value:
7934 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7935 **/
7936 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
7937 {
7938 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7939 int rc = PCIBIOS_SUCCESSFUL;
7940
7941 ENTER;
7942 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
7943 writel(IPR_UPROCI_SIS64_START_BIST,
7944 ioa_cfg->regs.set_uproc_interrupt_reg32);
7945 else
7946 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
7947
7948 if (rc == PCIBIOS_SUCCESSFUL) {
7949 ipr_cmd->job_step = ipr_reset_bist_done;
7950 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7951 rc = IPR_RC_JOB_RETURN;
7952 } else {
7953 if (ioa_cfg->cfg_locked)
7954 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
7955 ioa_cfg->cfg_locked = 0;
7956 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7957 rc = IPR_RC_JOB_CONTINUE;
7958 }
7959
7960 LEAVE;
7961 return rc;
7962 }
7963
7964 /**
7965 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
7966 * @ipr_cmd: ipr command struct
7967 *
7968 * Description: This clears PCI reset to the adapter and delays two seconds.
7969 *
7970 * Return value:
7971 * IPR_RC_JOB_RETURN
7972 **/
7973 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
7974 {
7975 ENTER;
7976 ipr_cmd->job_step = ipr_reset_bist_done;
7977 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7978 LEAVE;
7979 return IPR_RC_JOB_RETURN;
7980 }
7981
7982 /**
7983 * ipr_reset_reset_work - Pulse a PCIe fundamental reset
7984 * @work: work struct
7985 *
7986 * Description: This pulses warm reset to a slot.
7987 *
7988 **/
7989 static void ipr_reset_reset_work(struct work_struct *work)
7990 {
7991 struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work);
7992 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7993 struct pci_dev *pdev = ioa_cfg->pdev;
7994 unsigned long lock_flags = 0;
7995
7996 ENTER;
7997 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
7998 msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT));
7999 pci_set_pcie_reset_state(pdev, pcie_deassert_reset);
8000
8001 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8002 if (ioa_cfg->reset_cmd == ipr_cmd)
8003 ipr_reset_ioa_job(ipr_cmd);
8004 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8005 LEAVE;
8006 }
8007
8008 /**
8009 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
8010 * @ipr_cmd: ipr command struct
8011 *
8012 * Description: This asserts PCI reset to the adapter.
8013 *
8014 * Return value:
8015 * IPR_RC_JOB_RETURN
8016 **/
8017 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
8018 {
8019 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8020
8021 ENTER;
8022 INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work);
8023 queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work);
8024 ipr_cmd->job_step = ipr_reset_slot_reset_done;
8025 LEAVE;
8026 return IPR_RC_JOB_RETURN;
8027 }
8028
8029 /**
8030 * ipr_reset_block_config_access_wait - Wait for permission to block config access
8031 * @ipr_cmd: ipr command struct
8032 *
8033 * Description: This attempts to block config access to the IOA.
8034 *
8035 * Return value:
8036 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8037 **/
8038 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
8039 {
8040 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8041 int rc = IPR_RC_JOB_CONTINUE;
8042
8043 if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
8044 ioa_cfg->cfg_locked = 1;
8045 ipr_cmd->job_step = ioa_cfg->reset;
8046 } else {
8047 if (ipr_cmd->u.time_left) {
8048 rc = IPR_RC_JOB_RETURN;
8049 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8050 ipr_reset_start_timer(ipr_cmd,
8051 IPR_CHECK_FOR_RESET_TIMEOUT);
8052 } else {
8053 ipr_cmd->job_step = ioa_cfg->reset;
8054 dev_err(&ioa_cfg->pdev->dev,
8055 "Timed out waiting to lock config access. Resetting anyway.\n");
8056 }
8057 }
8058
8059 return rc;
8060 }
8061
8062 /**
8063 * ipr_reset_block_config_access - Block config access to the IOA
8064 * @ipr_cmd: ipr command struct
8065 *
8066 * Description: This attempts to block config access to the IOA
8067 *
8068 * Return value:
8069 * IPR_RC_JOB_CONTINUE
8070 **/
8071 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
8072 {
8073 ipr_cmd->ioa_cfg->cfg_locked = 0;
8074 ipr_cmd->job_step = ipr_reset_block_config_access_wait;
8075 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8076 return IPR_RC_JOB_CONTINUE;
8077 }
8078
8079 /**
8080 * ipr_reset_allowed - Query whether or not IOA can be reset
8081 * @ioa_cfg: ioa config struct
8082 *
8083 * Return value:
8084 * 0 if reset not allowed / non-zero if reset is allowed
8085 **/
8086 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
8087 {
8088 volatile u32 temp_reg;
8089
8090 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8091 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
8092 }
8093
8094 /**
8095 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
8096 * @ipr_cmd: ipr command struct
8097 *
8098 * Description: This function waits for adapter permission to run BIST,
8099 * then runs BIST. If the adapter does not give permission after a
8100 * reasonable time, we will reset the adapter anyway. The impact of
8101 * resetting the adapter without warning the adapter is the risk of
8102 * losing the persistent error log on the adapter. If the adapter is
8103 * reset while it is writing to the flash on the adapter, the flash
8104 * segment will have bad ECC and be zeroed.
8105 *
8106 * Return value:
8107 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8108 **/
8109 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
8110 {
8111 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8112 int rc = IPR_RC_JOB_RETURN;
8113
8114 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
8115 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8116 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8117 } else {
8118 ipr_cmd->job_step = ipr_reset_block_config_access;
8119 rc = IPR_RC_JOB_CONTINUE;
8120 }
8121
8122 return rc;
8123 }
8124
8125 /**
8126 * ipr_reset_alert - Alert the adapter of a pending reset
8127 * @ipr_cmd: ipr command struct
8128 *
8129 * Description: This function alerts the adapter that it will be reset.
8130 * If memory space is not currently enabled, proceed directly
8131 * to running BIST on the adapter. The timer must always be started
8132 * so we guarantee we do not run BIST from ipr_isr.
8133 *
8134 * Return value:
8135 * IPR_RC_JOB_RETURN
8136 **/
8137 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
8138 {
8139 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8140 u16 cmd_reg;
8141 int rc;
8142
8143 ENTER;
8144 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
8145
8146 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
8147 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
8148 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
8149 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
8150 } else {
8151 ipr_cmd->job_step = ipr_reset_block_config_access;
8152 }
8153
8154 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8155 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8156
8157 LEAVE;
8158 return IPR_RC_JOB_RETURN;
8159 }
8160
8161 /**
8162 * ipr_reset_quiesce_done - Complete IOA disconnect
8163 * @ipr_cmd: ipr command struct
8164 *
8165 * Description: Freeze the adapter to complete quiesce processing
8166 *
8167 * Return value:
8168 * IPR_RC_JOB_CONTINUE
8169 **/
8170 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd)
8171 {
8172 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8173
8174 ENTER;
8175 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8176 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8177 LEAVE;
8178 return IPR_RC_JOB_CONTINUE;
8179 }
8180
8181 /**
8182 * ipr_reset_cancel_hcam_done - Check for outstanding commands
8183 * @ipr_cmd: ipr command struct
8184 *
8185 * Description: Ensure nothing is outstanding to the IOA and
8186 * proceed with IOA disconnect. Otherwise reset the IOA.
8187 *
8188 * Return value:
8189 * IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE
8190 **/
8191 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd)
8192 {
8193 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8194 struct ipr_cmnd *loop_cmd;
8195 struct ipr_hrr_queue *hrrq;
8196 int rc = IPR_RC_JOB_CONTINUE;
8197 int count = 0;
8198
8199 ENTER;
8200 ipr_cmd->job_step = ipr_reset_quiesce_done;
8201
8202 for_each_hrrq(hrrq, ioa_cfg) {
8203 spin_lock(&hrrq->_lock);
8204 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) {
8205 count++;
8206 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8207 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
8208 rc = IPR_RC_JOB_RETURN;
8209 break;
8210 }
8211 spin_unlock(&hrrq->_lock);
8212
8213 if (count)
8214 break;
8215 }
8216
8217 LEAVE;
8218 return rc;
8219 }
8220
8221 /**
8222 * ipr_reset_cancel_hcam - Cancel outstanding HCAMs
8223 * @ipr_cmd: ipr command struct
8224 *
8225 * Description: Cancel any oustanding HCAMs to the IOA.
8226 *
8227 * Return value:
8228 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8229 **/
8230 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd)
8231 {
8232 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8233 int rc = IPR_RC_JOB_CONTINUE;
8234 struct ipr_cmd_pkt *cmd_pkt;
8235 struct ipr_cmnd *hcam_cmd;
8236 struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ];
8237
8238 ENTER;
8239 ipr_cmd->job_step = ipr_reset_cancel_hcam_done;
8240
8241 if (!hrrq->ioa_is_dead) {
8242 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) {
8243 list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) {
8244 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC)
8245 continue;
8246
8247 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8248 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8249 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
8250 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
8251 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST;
8252 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB;
8253 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff;
8254 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff;
8255 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff;
8256 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff;
8257 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff;
8258 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff;
8259 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff;
8260 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff;
8261
8262 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8263 IPR_CANCEL_TIMEOUT);
8264
8265 rc = IPR_RC_JOB_RETURN;
8266 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8267 break;
8268 }
8269 }
8270 } else
8271 ipr_cmd->job_step = ipr_reset_alert;
8272
8273 LEAVE;
8274 return rc;
8275 }
8276
8277 /**
8278 * ipr_reset_ucode_download_done - Microcode download completion
8279 * @ipr_cmd: ipr command struct
8280 *
8281 * Description: This function unmaps the microcode download buffer.
8282 *
8283 * Return value:
8284 * IPR_RC_JOB_CONTINUE
8285 **/
8286 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
8287 {
8288 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8289 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8290
8291 dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist,
8292 sglist->num_sg, DMA_TO_DEVICE);
8293
8294 ipr_cmd->job_step = ipr_reset_alert;
8295 return IPR_RC_JOB_CONTINUE;
8296 }
8297
8298 /**
8299 * ipr_reset_ucode_download - Download microcode to the adapter
8300 * @ipr_cmd: ipr command struct
8301 *
8302 * Description: This function checks to see if it there is microcode
8303 * to download to the adapter. If there is, a download is performed.
8304 *
8305 * Return value:
8306 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8307 **/
8308 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
8309 {
8310 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8311 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8312
8313 ENTER;
8314 ipr_cmd->job_step = ipr_reset_alert;
8315
8316 if (!sglist)
8317 return IPR_RC_JOB_CONTINUE;
8318
8319 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8320 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
8321 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
8322 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
8323 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
8324 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
8325 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
8326
8327 if (ioa_cfg->sis64)
8328 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
8329 else
8330 ipr_build_ucode_ioadl(ipr_cmd, sglist);
8331 ipr_cmd->job_step = ipr_reset_ucode_download_done;
8332
8333 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8334 IPR_WRITE_BUFFER_TIMEOUT);
8335
8336 LEAVE;
8337 return IPR_RC_JOB_RETURN;
8338 }
8339
8340 /**
8341 * ipr_reset_shutdown_ioa - Shutdown the adapter
8342 * @ipr_cmd: ipr command struct
8343 *
8344 * Description: This function issues an adapter shutdown of the
8345 * specified type to the specified adapter as part of the
8346 * adapter reset job.
8347 *
8348 * Return value:
8349 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8350 **/
8351 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
8352 {
8353 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8354 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
8355 unsigned long timeout;
8356 int rc = IPR_RC_JOB_CONTINUE;
8357
8358 ENTER;
8359 if (shutdown_type == IPR_SHUTDOWN_QUIESCE)
8360 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8361 else if (shutdown_type != IPR_SHUTDOWN_NONE &&
8362 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
8363 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8364 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8365 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
8366 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
8367
8368 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
8369 timeout = IPR_SHUTDOWN_TIMEOUT;
8370 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
8371 timeout = IPR_INTERNAL_TIMEOUT;
8372 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
8373 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
8374 else
8375 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
8376
8377 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
8378
8379 rc = IPR_RC_JOB_RETURN;
8380 ipr_cmd->job_step = ipr_reset_ucode_download;
8381 } else
8382 ipr_cmd->job_step = ipr_reset_alert;
8383
8384 LEAVE;
8385 return rc;
8386 }
8387
8388 /**
8389 * ipr_reset_ioa_job - Adapter reset job
8390 * @ipr_cmd: ipr command struct
8391 *
8392 * Description: This function is the job router for the adapter reset job.
8393 *
8394 * Return value:
8395 * none
8396 **/
8397 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
8398 {
8399 u32 rc, ioasc;
8400 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8401
8402 do {
8403 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
8404
8405 if (ioa_cfg->reset_cmd != ipr_cmd) {
8406 /*
8407 * We are doing nested adapter resets and this is
8408 * not the current reset job.
8409 */
8410 list_add_tail(&ipr_cmd->queue,
8411 &ipr_cmd->hrrq->hrrq_free_q);
8412 return;
8413 }
8414
8415 if (IPR_IOASC_SENSE_KEY(ioasc)) {
8416 rc = ipr_cmd->job_step_failed(ipr_cmd);
8417 if (rc == IPR_RC_JOB_RETURN)
8418 return;
8419 }
8420
8421 ipr_reinit_ipr_cmnd(ipr_cmd);
8422 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
8423 rc = ipr_cmd->job_step(ipr_cmd);
8424 } while (rc == IPR_RC_JOB_CONTINUE);
8425 }
8426
8427 /**
8428 * _ipr_initiate_ioa_reset - Initiate an adapter reset
8429 * @ioa_cfg: ioa config struct
8430 * @job_step: first job step of reset job
8431 * @shutdown_type: shutdown type
8432 *
8433 * Description: This function will initiate the reset of the given adapter
8434 * starting at the selected job step.
8435 * If the caller needs to wait on the completion of the reset,
8436 * the caller must sleep on the reset_wait_q.
8437 *
8438 * Return value:
8439 * none
8440 **/
8441 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
8442 int (*job_step) (struct ipr_cmnd *),
8443 enum ipr_shutdown_type shutdown_type)
8444 {
8445 struct ipr_cmnd *ipr_cmd;
8446 int i;
8447
8448 ioa_cfg->in_reset_reload = 1;
8449 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8450 spin_lock(&ioa_cfg->hrrq[i]._lock);
8451 ioa_cfg->hrrq[i].allow_cmds = 0;
8452 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8453 }
8454 wmb();
8455 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
8456 ioa_cfg->scsi_unblock = 0;
8457 ioa_cfg->scsi_blocked = 1;
8458 scsi_block_requests(ioa_cfg->host);
8459 }
8460
8461 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
8462 ioa_cfg->reset_cmd = ipr_cmd;
8463 ipr_cmd->job_step = job_step;
8464 ipr_cmd->u.shutdown_type = shutdown_type;
8465
8466 ipr_reset_ioa_job(ipr_cmd);
8467 }
8468
8469 /**
8470 * ipr_initiate_ioa_reset - Initiate an adapter reset
8471 * @ioa_cfg: ioa config struct
8472 * @shutdown_type: shutdown type
8473 *
8474 * Description: This function will initiate the reset of the given adapter.
8475 * If the caller needs to wait on the completion of the reset,
8476 * the caller must sleep on the reset_wait_q.
8477 *
8478 * Return value:
8479 * none
8480 **/
8481 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
8482 enum ipr_shutdown_type shutdown_type)
8483 {
8484 int i;
8485
8486 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
8487 return;
8488
8489 if (ioa_cfg->in_reset_reload) {
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
8496 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
8497 dev_err(&ioa_cfg->pdev->dev,
8498 "IOA taken offline - error recovery failed\n");
8499
8500 ioa_cfg->reset_retries = 0;
8501 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8502 spin_lock(&ioa_cfg->hrrq[i]._lock);
8503 ioa_cfg->hrrq[i].ioa_is_dead = 1;
8504 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8505 }
8506 wmb();
8507
8508 if (ioa_cfg->in_ioa_bringdown) {
8509 ioa_cfg->reset_cmd = NULL;
8510 ioa_cfg->in_reset_reload = 0;
8511 ipr_fail_all_ops(ioa_cfg);
8512 wake_up_all(&ioa_cfg->reset_wait_q);
8513
8514 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
8515 ioa_cfg->scsi_unblock = 1;
8516 schedule_work(&ioa_cfg->work_q);
8517 }
8518 return;
8519 } else {
8520 ioa_cfg->in_ioa_bringdown = 1;
8521 shutdown_type = IPR_SHUTDOWN_NONE;
8522 }
8523 }
8524
8525 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
8526 shutdown_type);
8527 }
8528
8529 /**
8530 * ipr_reset_freeze - Hold off all I/O activity
8531 * @ipr_cmd: ipr command struct
8532 *
8533 * Description: If the PCI slot is frozen, hold off all I/O
8534 * activity; then, as soon as the slot is available again,
8535 * initiate an adapter reset.
8536 */
8537 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
8538 {
8539 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8540 int i;
8541
8542 /* Disallow new interrupts, avoid loop */
8543 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8544 spin_lock(&ioa_cfg->hrrq[i]._lock);
8545 ioa_cfg->hrrq[i].allow_interrupts = 0;
8546 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8547 }
8548 wmb();
8549 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8550 ipr_cmd->done = ipr_reset_ioa_job;
8551 return IPR_RC_JOB_RETURN;
8552 }
8553
8554 /**
8555 * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled
8556 * @pdev: PCI device struct
8557 *
8558 * Description: This routine is called to tell us that the MMIO
8559 * access to the IOA has been restored
8560 */
8561 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev)
8562 {
8563 unsigned long flags = 0;
8564 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8565
8566 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8567 if (!ioa_cfg->probe_done)
8568 pci_save_state(pdev);
8569 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8570 return PCI_ERS_RESULT_NEED_RESET;
8571 }
8572
8573 /**
8574 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
8575 * @pdev: PCI device struct
8576 *
8577 * Description: This routine is called to tell us that the PCI bus
8578 * is down. Can't do anything here, except put the device driver
8579 * into a holding pattern, waiting for the PCI bus to come back.
8580 */
8581 static void ipr_pci_frozen(struct pci_dev *pdev)
8582 {
8583 unsigned long flags = 0;
8584 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8585
8586 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8587 if (ioa_cfg->probe_done)
8588 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
8589 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8590 }
8591
8592 /**
8593 * ipr_pci_slot_reset - Called when PCI slot has been reset.
8594 * @pdev: PCI device struct
8595 *
8596 * Description: This routine is called by the pci error recovery
8597 * code after the PCI slot has been reset, just before we
8598 * should resume normal operations.
8599 */
8600 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
8601 {
8602 unsigned long flags = 0;
8603 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8604
8605 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8606 if (ioa_cfg->probe_done) {
8607 if (ioa_cfg->needs_warm_reset)
8608 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8609 else
8610 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
8611 IPR_SHUTDOWN_NONE);
8612 } else
8613 wake_up_all(&ioa_cfg->eeh_wait_q);
8614 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8615 return PCI_ERS_RESULT_RECOVERED;
8616 }
8617
8618 /**
8619 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
8620 * @pdev: PCI device struct
8621 *
8622 * Description: This routine is called when the PCI bus has
8623 * permanently failed.
8624 */
8625 static void ipr_pci_perm_failure(struct pci_dev *pdev)
8626 {
8627 unsigned long flags = 0;
8628 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8629 int i;
8630
8631 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8632 if (ioa_cfg->probe_done) {
8633 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8634 ioa_cfg->sdt_state = ABORT_DUMP;
8635 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1;
8636 ioa_cfg->in_ioa_bringdown = 1;
8637 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8638 spin_lock(&ioa_cfg->hrrq[i]._lock);
8639 ioa_cfg->hrrq[i].allow_cmds = 0;
8640 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8641 }
8642 wmb();
8643 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8644 } else
8645 wake_up_all(&ioa_cfg->eeh_wait_q);
8646 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8647 }
8648
8649 /**
8650 * ipr_pci_error_detected - Called when a PCI error is detected.
8651 * @pdev: PCI device struct
8652 * @state: PCI channel state
8653 *
8654 * Description: Called when a PCI error is detected.
8655 *
8656 * Return value:
8657 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
8658 */
8659 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
8660 pci_channel_state_t state)
8661 {
8662 switch (state) {
8663 case pci_channel_io_frozen:
8664 ipr_pci_frozen(pdev);
8665 return PCI_ERS_RESULT_CAN_RECOVER;
8666 case pci_channel_io_perm_failure:
8667 ipr_pci_perm_failure(pdev);
8668 return PCI_ERS_RESULT_DISCONNECT;
8669 default:
8670 break;
8671 }
8672 return PCI_ERS_RESULT_NEED_RESET;
8673 }
8674
8675 /**
8676 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
8677 * @ioa_cfg: ioa cfg struct
8678 *
8679 * Description: This is the second phase of adapter initialization
8680 * This function takes care of initilizing the adapter to the point
8681 * where it can accept new commands.
8682 * Return value:
8683 * none
8684 **/
8685 static void ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
8686 {
8687 unsigned long host_lock_flags = 0;
8688
8689 ENTER;
8690 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8691 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
8692 ioa_cfg->probe_done = 1;
8693 if (ioa_cfg->needs_hard_reset) {
8694 ioa_cfg->needs_hard_reset = 0;
8695 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8696 } else
8697 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
8698 IPR_SHUTDOWN_NONE);
8699 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8700
8701 LEAVE;
8702 }
8703
8704 /**
8705 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
8706 * @ioa_cfg: ioa config struct
8707 *
8708 * Return value:
8709 * none
8710 **/
8711 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8712 {
8713 int i;
8714
8715 if (ioa_cfg->ipr_cmnd_list) {
8716 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8717 if (ioa_cfg->ipr_cmnd_list[i])
8718 dma_pool_free(ioa_cfg->ipr_cmd_pool,
8719 ioa_cfg->ipr_cmnd_list[i],
8720 ioa_cfg->ipr_cmnd_list_dma[i]);
8721
8722 ioa_cfg->ipr_cmnd_list[i] = NULL;
8723 }
8724 }
8725
8726 dma_pool_destroy(ioa_cfg->ipr_cmd_pool);
8727
8728 kfree(ioa_cfg->ipr_cmnd_list);
8729 kfree(ioa_cfg->ipr_cmnd_list_dma);
8730 ioa_cfg->ipr_cmnd_list = NULL;
8731 ioa_cfg->ipr_cmnd_list_dma = NULL;
8732 ioa_cfg->ipr_cmd_pool = NULL;
8733 }
8734
8735 /**
8736 * ipr_free_mem - Frees memory allocated for an adapter
8737 * @ioa_cfg: ioa cfg struct
8738 *
8739 * Return value:
8740 * nothing
8741 **/
8742 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
8743 {
8744 int i;
8745
8746 kfree(ioa_cfg->res_entries);
8747 dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs),
8748 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8749 ipr_free_cmd_blks(ioa_cfg);
8750
8751 for (i = 0; i < ioa_cfg->hrrq_num; i++)
8752 dma_free_coherent(&ioa_cfg->pdev->dev,
8753 sizeof(u32) * ioa_cfg->hrrq[i].size,
8754 ioa_cfg->hrrq[i].host_rrq,
8755 ioa_cfg->hrrq[i].host_rrq_dma);
8756
8757 dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size,
8758 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
8759
8760 for (i = 0; i < IPR_MAX_HCAMS; i++) {
8761 dma_free_coherent(&ioa_cfg->pdev->dev,
8762 sizeof(struct ipr_hostrcb),
8763 ioa_cfg->hostrcb[i],
8764 ioa_cfg->hostrcb_dma[i]);
8765 }
8766
8767 ipr_free_dump(ioa_cfg);
8768 kfree(ioa_cfg->trace);
8769 }
8770
8771 /**
8772 * ipr_free_irqs - Free all allocated IRQs for the adapter.
8773 * @ioa_cfg: ipr cfg struct
8774 *
8775 * This function frees all allocated IRQs for the
8776 * specified adapter.
8777 *
8778 * Return value:
8779 * none
8780 **/
8781 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg)
8782 {
8783 struct pci_dev *pdev = ioa_cfg->pdev;
8784 int i;
8785
8786 for (i = 0; i < ioa_cfg->nvectors; i++)
8787 free_irq(pci_irq_vector(pdev, i), &ioa_cfg->hrrq[i]);
8788 pci_free_irq_vectors(pdev);
8789 }
8790
8791 /**
8792 * ipr_free_all_resources - Free all allocated resources for an adapter.
8793 * @ioa_cfg: ioa config struct
8794 *
8795 * This function frees all allocated resources for the
8796 * specified adapter.
8797 *
8798 * Return value:
8799 * none
8800 **/
8801 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
8802 {
8803 struct pci_dev *pdev = ioa_cfg->pdev;
8804
8805 ENTER;
8806 ipr_free_irqs(ioa_cfg);
8807 if (ioa_cfg->reset_work_q)
8808 destroy_workqueue(ioa_cfg->reset_work_q);
8809 iounmap(ioa_cfg->hdw_dma_regs);
8810 pci_release_regions(pdev);
8811 ipr_free_mem(ioa_cfg);
8812 scsi_host_put(ioa_cfg->host);
8813 pci_disable_device(pdev);
8814 LEAVE;
8815 }
8816
8817 /**
8818 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
8819 * @ioa_cfg: ioa config struct
8820 *
8821 * Return value:
8822 * 0 on success / -ENOMEM on allocation failure
8823 **/
8824 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8825 {
8826 struct ipr_cmnd *ipr_cmd;
8827 struct ipr_ioarcb *ioarcb;
8828 dma_addr_t dma_addr;
8829 int i, entries_each_hrrq, hrrq_id = 0;
8830
8831 ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev,
8832 sizeof(struct ipr_cmnd), 512, 0);
8833
8834 if (!ioa_cfg->ipr_cmd_pool)
8835 return -ENOMEM;
8836
8837 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL);
8838 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL);
8839
8840 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) {
8841 ipr_free_cmd_blks(ioa_cfg);
8842 return -ENOMEM;
8843 }
8844
8845 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8846 if (ioa_cfg->hrrq_num > 1) {
8847 if (i == 0) {
8848 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS;
8849 ioa_cfg->hrrq[i].min_cmd_id = 0;
8850 ioa_cfg->hrrq[i].max_cmd_id =
8851 (entries_each_hrrq - 1);
8852 } else {
8853 entries_each_hrrq =
8854 IPR_NUM_BASE_CMD_BLKS/
8855 (ioa_cfg->hrrq_num - 1);
8856 ioa_cfg->hrrq[i].min_cmd_id =
8857 IPR_NUM_INTERNAL_CMD_BLKS +
8858 (i - 1) * entries_each_hrrq;
8859 ioa_cfg->hrrq[i].max_cmd_id =
8860 (IPR_NUM_INTERNAL_CMD_BLKS +
8861 i * entries_each_hrrq - 1);
8862 }
8863 } else {
8864 entries_each_hrrq = IPR_NUM_CMD_BLKS;
8865 ioa_cfg->hrrq[i].min_cmd_id = 0;
8866 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1);
8867 }
8868 ioa_cfg->hrrq[i].size = entries_each_hrrq;
8869 }
8870
8871 BUG_ON(ioa_cfg->hrrq_num == 0);
8872
8873 i = IPR_NUM_CMD_BLKS -
8874 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1;
8875 if (i > 0) {
8876 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i;
8877 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i;
8878 }
8879
8880 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8881 ipr_cmd = dma_pool_zalloc(ioa_cfg->ipr_cmd_pool,
8882 GFP_KERNEL, &dma_addr);
8883
8884 if (!ipr_cmd) {
8885 ipr_free_cmd_blks(ioa_cfg);
8886 return -ENOMEM;
8887 }
8888
8889 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
8890 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
8891
8892 ioarcb = &ipr_cmd->ioarcb;
8893 ipr_cmd->dma_addr = dma_addr;
8894 if (ioa_cfg->sis64)
8895 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
8896 else
8897 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
8898
8899 ioarcb->host_response_handle = cpu_to_be32(i << 2);
8900 if (ioa_cfg->sis64) {
8901 ioarcb->u.sis64_addr_data.data_ioadl_addr =
8902 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
8903 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
8904 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
8905 } else {
8906 ioarcb->write_ioadl_addr =
8907 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
8908 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
8909 ioarcb->ioasa_host_pci_addr =
8910 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
8911 }
8912 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
8913 ipr_cmd->cmd_index = i;
8914 ipr_cmd->ioa_cfg = ioa_cfg;
8915 ipr_cmd->sense_buffer_dma = dma_addr +
8916 offsetof(struct ipr_cmnd, sense_buffer);
8917
8918 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id;
8919 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id];
8920 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
8921 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id)
8922 hrrq_id++;
8923 }
8924
8925 return 0;
8926 }
8927
8928 /**
8929 * ipr_alloc_mem - Allocate memory for an adapter
8930 * @ioa_cfg: ioa config struct
8931 *
8932 * Return value:
8933 * 0 on success / non-zero for error
8934 **/
8935 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
8936 {
8937 struct pci_dev *pdev = ioa_cfg->pdev;
8938 int i, rc = -ENOMEM;
8939
8940 ENTER;
8941 ioa_cfg->res_entries = kcalloc(ioa_cfg->max_devs_supported,
8942 sizeof(struct ipr_resource_entry),
8943 GFP_KERNEL);
8944
8945 if (!ioa_cfg->res_entries)
8946 goto out;
8947
8948 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
8949 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
8950 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
8951 }
8952
8953 ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev,
8954 sizeof(struct ipr_misc_cbs),
8955 &ioa_cfg->vpd_cbs_dma,
8956 GFP_KERNEL);
8957
8958 if (!ioa_cfg->vpd_cbs)
8959 goto out_free_res_entries;
8960
8961 if (ipr_alloc_cmd_blks(ioa_cfg))
8962 goto out_free_vpd_cbs;
8963
8964 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8965 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev,
8966 sizeof(u32) * ioa_cfg->hrrq[i].size,
8967 &ioa_cfg->hrrq[i].host_rrq_dma,
8968 GFP_KERNEL);
8969
8970 if (!ioa_cfg->hrrq[i].host_rrq) {
8971 while (--i >= 0)
8972 dma_free_coherent(&pdev->dev,
8973 sizeof(u32) * ioa_cfg->hrrq[i].size,
8974 ioa_cfg->hrrq[i].host_rrq,
8975 ioa_cfg->hrrq[i].host_rrq_dma);
8976 goto out_ipr_free_cmd_blocks;
8977 }
8978 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg;
8979 }
8980
8981 ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev,
8982 ioa_cfg->cfg_table_size,
8983 &ioa_cfg->cfg_table_dma,
8984 GFP_KERNEL);
8985
8986 if (!ioa_cfg->u.cfg_table)
8987 goto out_free_host_rrq;
8988
8989 for (i = 0; i < IPR_MAX_HCAMS; i++) {
8990 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev,
8991 sizeof(struct ipr_hostrcb),
8992 &ioa_cfg->hostrcb_dma[i],
8993 GFP_KERNEL);
8994
8995 if (!ioa_cfg->hostrcb[i])
8996 goto out_free_hostrcb_dma;
8997
8998 ioa_cfg->hostrcb[i]->hostrcb_dma =
8999 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
9000 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
9001 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
9002 }
9003
9004 ioa_cfg->trace = kcalloc(IPR_NUM_TRACE_ENTRIES,
9005 sizeof(struct ipr_trace_entry),
9006 GFP_KERNEL);
9007
9008 if (!ioa_cfg->trace)
9009 goto out_free_hostrcb_dma;
9010
9011 rc = 0;
9012 out:
9013 LEAVE;
9014 return rc;
9015
9016 out_free_hostrcb_dma:
9017 while (i-- > 0) {
9018 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb),
9019 ioa_cfg->hostrcb[i],
9020 ioa_cfg->hostrcb_dma[i]);
9021 }
9022 dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size,
9023 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9024 out_free_host_rrq:
9025 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9026 dma_free_coherent(&pdev->dev,
9027 sizeof(u32) * ioa_cfg->hrrq[i].size,
9028 ioa_cfg->hrrq[i].host_rrq,
9029 ioa_cfg->hrrq[i].host_rrq_dma);
9030 }
9031 out_ipr_free_cmd_blocks:
9032 ipr_free_cmd_blks(ioa_cfg);
9033 out_free_vpd_cbs:
9034 dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs),
9035 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9036 out_free_res_entries:
9037 kfree(ioa_cfg->res_entries);
9038 goto out;
9039 }
9040
9041 /**
9042 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
9043 * @ioa_cfg: ioa config struct
9044 *
9045 * Return value:
9046 * none
9047 **/
9048 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
9049 {
9050 int i;
9051
9052 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
9053 ioa_cfg->bus_attr[i].bus = i;
9054 ioa_cfg->bus_attr[i].qas_enabled = 0;
9055 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
9056 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
9057 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
9058 else
9059 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
9060 }
9061 }
9062
9063 /**
9064 * ipr_init_regs - Initialize IOA registers
9065 * @ioa_cfg: ioa config struct
9066 *
9067 * Return value:
9068 * none
9069 **/
9070 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg)
9071 {
9072 const struct ipr_interrupt_offsets *p;
9073 struct ipr_interrupts *t;
9074 void __iomem *base;
9075
9076 p = &ioa_cfg->chip_cfg->regs;
9077 t = &ioa_cfg->regs;
9078 base = ioa_cfg->hdw_dma_regs;
9079
9080 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
9081 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
9082 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
9083 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
9084 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
9085 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
9086 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
9087 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
9088 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
9089 t->ioarrin_reg = base + p->ioarrin_reg;
9090 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
9091 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
9092 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
9093 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
9094 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
9095 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
9096
9097 if (ioa_cfg->sis64) {
9098 t->init_feedback_reg = base + p->init_feedback_reg;
9099 t->dump_addr_reg = base + p->dump_addr_reg;
9100 t->dump_data_reg = base + p->dump_data_reg;
9101 t->endian_swap_reg = base + p->endian_swap_reg;
9102 }
9103 }
9104
9105 /**
9106 * ipr_init_ioa_cfg - Initialize IOA config struct
9107 * @ioa_cfg: ioa config struct
9108 * @host: scsi host struct
9109 * @pdev: PCI dev struct
9110 *
9111 * Return value:
9112 * none
9113 **/
9114 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
9115 struct Scsi_Host *host, struct pci_dev *pdev)
9116 {
9117 int i;
9118
9119 ioa_cfg->host = host;
9120 ioa_cfg->pdev = pdev;
9121 ioa_cfg->log_level = ipr_log_level;
9122 ioa_cfg->doorbell = IPR_DOORBELL;
9123 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
9124 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
9125 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
9126 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
9127 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
9128 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
9129
9130 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
9131 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
9132 INIT_LIST_HEAD(&ioa_cfg->hostrcb_report_q);
9133 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
9134 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9135 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
9136 INIT_WORK(&ioa_cfg->scsi_add_work_q, ipr_add_remove_thread);
9137 init_waitqueue_head(&ioa_cfg->reset_wait_q);
9138 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9139 init_waitqueue_head(&ioa_cfg->eeh_wait_q);
9140 ioa_cfg->sdt_state = INACTIVE;
9141
9142 ipr_initialize_bus_attr(ioa_cfg);
9143 ioa_cfg->max_devs_supported = ipr_max_devs;
9144
9145 if (ioa_cfg->sis64) {
9146 host->max_channel = IPR_MAX_SIS64_BUSES;
9147 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
9148 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
9149 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
9150 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
9151 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
9152 + ((sizeof(struct ipr_config_table_entry64)
9153 * ioa_cfg->max_devs_supported)));
9154 } else {
9155 host->max_channel = IPR_VSET_BUS;
9156 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
9157 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
9158 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
9159 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
9160 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
9161 + ((sizeof(struct ipr_config_table_entry)
9162 * ioa_cfg->max_devs_supported)));
9163 }
9164
9165 host->unique_id = host->host_no;
9166 host->max_cmd_len = IPR_MAX_CDB_LEN;
9167 host->can_queue = ioa_cfg->max_cmds;
9168 pci_set_drvdata(pdev, ioa_cfg);
9169
9170 for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) {
9171 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q);
9172 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q);
9173 spin_lock_init(&ioa_cfg->hrrq[i]._lock);
9174 if (i == 0)
9175 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock;
9176 else
9177 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock;
9178 }
9179 }
9180
9181 /**
9182 * ipr_get_chip_info - Find adapter chip information
9183 * @dev_id: PCI device id struct
9184 *
9185 * Return value:
9186 * ptr to chip information on success / NULL on failure
9187 **/
9188 static const struct ipr_chip_t *
9189 ipr_get_chip_info(const struct pci_device_id *dev_id)
9190 {
9191 int i;
9192
9193 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
9194 if (ipr_chip[i].vendor == dev_id->vendor &&
9195 ipr_chip[i].device == dev_id->device)
9196 return &ipr_chip[i];
9197 return NULL;
9198 }
9199
9200 /**
9201 * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete
9202 * during probe time
9203 * @ioa_cfg: ioa config struct
9204 *
9205 * Return value:
9206 * None
9207 **/
9208 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg)
9209 {
9210 struct pci_dev *pdev = ioa_cfg->pdev;
9211
9212 if (pci_channel_offline(pdev)) {
9213 wait_event_timeout(ioa_cfg->eeh_wait_q,
9214 !pci_channel_offline(pdev),
9215 IPR_PCI_ERROR_RECOVERY_TIMEOUT);
9216 pci_restore_state(pdev);
9217 }
9218 }
9219
9220 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg)
9221 {
9222 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1;
9223
9224 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) {
9225 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n,
9226 "host%d-%d", ioa_cfg->host->host_no, vec_idx);
9227 ioa_cfg->vectors_info[vec_idx].
9228 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0;
9229 }
9230 }
9231
9232 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg,
9233 struct pci_dev *pdev)
9234 {
9235 int i, rc;
9236
9237 for (i = 1; i < ioa_cfg->nvectors; i++) {
9238 rc = request_irq(pci_irq_vector(pdev, i),
9239 ipr_isr_mhrrq,
9240 0,
9241 ioa_cfg->vectors_info[i].desc,
9242 &ioa_cfg->hrrq[i]);
9243 if (rc) {
9244 while (--i > 0)
9245 free_irq(pci_irq_vector(pdev, i),
9246 &ioa_cfg->hrrq[i]);
9247 return rc;
9248 }
9249 }
9250 return 0;
9251 }
9252
9253 /**
9254 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
9255 * @devp: PCI device struct
9256 * @irq: IRQ number
9257 *
9258 * Description: Simply set the msi_received flag to 1 indicating that
9259 * Message Signaled Interrupts are supported.
9260 *
9261 * Return value:
9262 * 0 on success / non-zero on failure
9263 **/
9264 static irqreturn_t ipr_test_intr(int irq, void *devp)
9265 {
9266 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
9267 unsigned long lock_flags = 0;
9268
9269 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq);
9270 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9271
9272 ioa_cfg->msi_received = 1;
9273 wake_up(&ioa_cfg->msi_wait_q);
9274
9275 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9276 return IRQ_HANDLED;
9277 }
9278
9279 /**
9280 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
9281 * @ioa_cfg: ioa config struct
9282 * @pdev: PCI device struct
9283 *
9284 * Description: This routine sets up and initiates a test interrupt to determine
9285 * if the interrupt is received via the ipr_test_intr() service routine.
9286 * If the tests fails, the driver will fall back to LSI.
9287 *
9288 * Return value:
9289 * 0 on success / non-zero on failure
9290 **/
9291 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev)
9292 {
9293 int rc;
9294 unsigned long lock_flags = 0;
9295 int irq = pci_irq_vector(pdev, 0);
9296
9297 ENTER;
9298
9299 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9300 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9301 ioa_cfg->msi_received = 0;
9302 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9303 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
9304 readl(ioa_cfg->regs.sense_interrupt_mask_reg);
9305 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9306
9307 rc = request_irq(irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9308 if (rc) {
9309 dev_err(&pdev->dev, "Can not assign irq %d\n", irq);
9310 return rc;
9311 } else if (ipr_debug)
9312 dev_info(&pdev->dev, "IRQ assigned: %d\n", irq);
9313
9314 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
9315 readl(ioa_cfg->regs.sense_interrupt_reg);
9316 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
9317 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9318 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9319
9320 if (!ioa_cfg->msi_received) {
9321 /* MSI test failed */
9322 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
9323 rc = -EOPNOTSUPP;
9324 } else if (ipr_debug)
9325 dev_info(&pdev->dev, "MSI test succeeded.\n");
9326
9327 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9328
9329 free_irq(irq, ioa_cfg);
9330
9331 LEAVE;
9332
9333 return rc;
9334 }
9335
9336 /* ipr_probe_ioa - Allocates memory and does first stage of initialization
9337 * @pdev: PCI device struct
9338 * @dev_id: PCI device id struct
9339 *
9340 * Return value:
9341 * 0 on success / non-zero on failure
9342 **/
9343 static int ipr_probe_ioa(struct pci_dev *pdev,
9344 const struct pci_device_id *dev_id)
9345 {
9346 struct ipr_ioa_cfg *ioa_cfg;
9347 struct Scsi_Host *host;
9348 unsigned long ipr_regs_pci;
9349 void __iomem *ipr_regs;
9350 int rc = PCIBIOS_SUCCESSFUL;
9351 volatile u32 mask, uproc, interrupts;
9352 unsigned long lock_flags, driver_lock_flags;
9353 unsigned int irq_flag;
9354
9355 ENTER;
9356
9357 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
9358 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
9359
9360 if (!host) {
9361 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
9362 rc = -ENOMEM;
9363 goto out;
9364 }
9365
9366 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
9367 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
9368
9369 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
9370
9371 if (!ioa_cfg->ipr_chip) {
9372 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
9373 dev_id->vendor, dev_id->device);
9374 goto out_scsi_host_put;
9375 }
9376
9377 /* set SIS 32 or SIS 64 */
9378 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
9379 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
9380 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr;
9381 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds;
9382
9383 if (ipr_transop_timeout)
9384 ioa_cfg->transop_timeout = ipr_transop_timeout;
9385 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
9386 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
9387 else
9388 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
9389
9390 ioa_cfg->revid = pdev->revision;
9391
9392 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
9393
9394 ipr_regs_pci = pci_resource_start(pdev, 0);
9395
9396 rc = pci_request_regions(pdev, IPR_NAME);
9397 if (rc < 0) {
9398 dev_err(&pdev->dev,
9399 "Couldn't register memory range of registers\n");
9400 goto out_scsi_host_put;
9401 }
9402
9403 rc = pci_enable_device(pdev);
9404
9405 if (rc || pci_channel_offline(pdev)) {
9406 if (pci_channel_offline(pdev)) {
9407 ipr_wait_for_pci_err_recovery(ioa_cfg);
9408 rc = pci_enable_device(pdev);
9409 }
9410
9411 if (rc) {
9412 dev_err(&pdev->dev, "Cannot enable adapter\n");
9413 ipr_wait_for_pci_err_recovery(ioa_cfg);
9414 goto out_release_regions;
9415 }
9416 }
9417
9418 ipr_regs = pci_ioremap_bar(pdev, 0);
9419
9420 if (!ipr_regs) {
9421 dev_err(&pdev->dev,
9422 "Couldn't map memory range of registers\n");
9423 rc = -ENOMEM;
9424 goto out_disable;
9425 }
9426
9427 ioa_cfg->hdw_dma_regs = ipr_regs;
9428 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
9429 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
9430
9431 ipr_init_regs(ioa_cfg);
9432
9433 if (ioa_cfg->sis64) {
9434 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9435 if (rc < 0) {
9436 dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n");
9437 rc = dma_set_mask_and_coherent(&pdev->dev,
9438 DMA_BIT_MASK(32));
9439 }
9440 } else
9441 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9442
9443 if (rc < 0) {
9444 dev_err(&pdev->dev, "Failed to set DMA mask\n");
9445 goto cleanup_nomem;
9446 }
9447
9448 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
9449 ioa_cfg->chip_cfg->cache_line_size);
9450
9451 if (rc != PCIBIOS_SUCCESSFUL) {
9452 dev_err(&pdev->dev, "Write of cache line size failed\n");
9453 ipr_wait_for_pci_err_recovery(ioa_cfg);
9454 rc = -EIO;
9455 goto cleanup_nomem;
9456 }
9457
9458 /* Issue MMIO read to ensure card is not in EEH */
9459 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
9460 ipr_wait_for_pci_err_recovery(ioa_cfg);
9461
9462 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) {
9463 dev_err(&pdev->dev, "The max number of MSIX is %d\n",
9464 IPR_MAX_MSIX_VECTORS);
9465 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS;
9466 }
9467
9468 irq_flag = PCI_IRQ_INTX;
9469 if (ioa_cfg->ipr_chip->has_msi)
9470 irq_flag |= PCI_IRQ_MSI | PCI_IRQ_MSIX;
9471 rc = pci_alloc_irq_vectors(pdev, 1, ipr_number_of_msix, irq_flag);
9472 if (rc < 0) {
9473 ipr_wait_for_pci_err_recovery(ioa_cfg);
9474 goto cleanup_nomem;
9475 }
9476 ioa_cfg->nvectors = rc;
9477
9478 if (!pdev->msi_enabled && !pdev->msix_enabled)
9479 ioa_cfg->clear_isr = 1;
9480
9481 pci_set_master(pdev);
9482
9483 if (pci_channel_offline(pdev)) {
9484 ipr_wait_for_pci_err_recovery(ioa_cfg);
9485 pci_set_master(pdev);
9486 if (pci_channel_offline(pdev)) {
9487 rc = -EIO;
9488 goto out_msi_disable;
9489 }
9490 }
9491
9492 if (pdev->msi_enabled || pdev->msix_enabled) {
9493 rc = ipr_test_msi(ioa_cfg, pdev);
9494 switch (rc) {
9495 case 0:
9496 dev_info(&pdev->dev,
9497 "Request for %d MSI%ss succeeded.", ioa_cfg->nvectors,
9498 pdev->msix_enabled ? "-X" : "");
9499 break;
9500 case -EOPNOTSUPP:
9501 ipr_wait_for_pci_err_recovery(ioa_cfg);
9502 pci_free_irq_vectors(pdev);
9503
9504 ioa_cfg->nvectors = 1;
9505 ioa_cfg->clear_isr = 1;
9506 break;
9507 default:
9508 goto out_msi_disable;
9509 }
9510 }
9511
9512 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors,
9513 (unsigned int)num_online_cpus(),
9514 (unsigned int)IPR_MAX_HRRQ_NUM);
9515
9516 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
9517 goto out_msi_disable;
9518
9519 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
9520 goto out_msi_disable;
9521
9522 rc = ipr_alloc_mem(ioa_cfg);
9523 if (rc < 0) {
9524 dev_err(&pdev->dev,
9525 "Couldn't allocate enough memory for device driver!\n");
9526 goto out_msi_disable;
9527 }
9528
9529 /* Save away PCI config space for use following IOA reset */
9530 rc = pci_save_state(pdev);
9531
9532 if (rc != PCIBIOS_SUCCESSFUL) {
9533 dev_err(&pdev->dev, "Failed to save PCI config space\n");
9534 rc = -EIO;
9535 goto cleanup_nolog;
9536 }
9537
9538 /*
9539 * If HRRQ updated interrupt is not masked, or reset alert is set,
9540 * the card is in an unknown state and needs a hard reset
9541 */
9542 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
9543 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
9544 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
9545 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
9546 ioa_cfg->needs_hard_reset = 1;
9547 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
9548 ioa_cfg->needs_hard_reset = 1;
9549 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
9550 ioa_cfg->ioa_unit_checked = 1;
9551
9552 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9553 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9554 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9555
9556 if (pdev->msi_enabled || pdev->msix_enabled) {
9557 name_msi_vectors(ioa_cfg);
9558 rc = request_irq(pci_irq_vector(pdev, 0), ipr_isr, 0,
9559 ioa_cfg->vectors_info[0].desc,
9560 &ioa_cfg->hrrq[0]);
9561 if (!rc)
9562 rc = ipr_request_other_msi_irqs(ioa_cfg, pdev);
9563 } else {
9564 rc = request_irq(pdev->irq, ipr_isr,
9565 IRQF_SHARED,
9566 IPR_NAME, &ioa_cfg->hrrq[0]);
9567 }
9568 if (rc) {
9569 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
9570 pdev->irq, rc);
9571 goto cleanup_nolog;
9572 }
9573
9574 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
9575 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
9576 ioa_cfg->needs_warm_reset = 1;
9577 ioa_cfg->reset = ipr_reset_slot_reset;
9578
9579 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d",
9580 WQ_MEM_RECLAIM, host->host_no);
9581
9582 if (!ioa_cfg->reset_work_q) {
9583 dev_err(&pdev->dev, "Couldn't register reset workqueue\n");
9584 rc = -ENOMEM;
9585 goto out_free_irq;
9586 }
9587 } else
9588 ioa_cfg->reset = ipr_reset_start_bist;
9589
9590 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
9591 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
9592 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
9593
9594 LEAVE;
9595 out:
9596 return rc;
9597
9598 out_free_irq:
9599 ipr_free_irqs(ioa_cfg);
9600 cleanup_nolog:
9601 ipr_free_mem(ioa_cfg);
9602 out_msi_disable:
9603 ipr_wait_for_pci_err_recovery(ioa_cfg);
9604 pci_free_irq_vectors(pdev);
9605 cleanup_nomem:
9606 iounmap(ipr_regs);
9607 out_disable:
9608 pci_disable_device(pdev);
9609 out_release_regions:
9610 pci_release_regions(pdev);
9611 out_scsi_host_put:
9612 scsi_host_put(host);
9613 goto out;
9614 }
9615
9616 /**
9617 * ipr_initiate_ioa_bringdown - Bring down an adapter
9618 * @ioa_cfg: ioa config struct
9619 * @shutdown_type: shutdown type
9620 *
9621 * Description: This function will initiate bringing down the adapter.
9622 * This consists of issuing an IOA shutdown to the adapter
9623 * to flush the cache, and running BIST.
9624 * If the caller needs to wait on the completion of the reset,
9625 * the caller must sleep on the reset_wait_q.
9626 *
9627 * Return value:
9628 * none
9629 **/
9630 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
9631 enum ipr_shutdown_type shutdown_type)
9632 {
9633 ENTER;
9634 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
9635 ioa_cfg->sdt_state = ABORT_DUMP;
9636 ioa_cfg->reset_retries = 0;
9637 ioa_cfg->in_ioa_bringdown = 1;
9638 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
9639 LEAVE;
9640 }
9641
9642 /**
9643 * __ipr_remove - Remove a single adapter
9644 * @pdev: pci device struct
9645 *
9646 * Adapter hot plug remove entry point.
9647 *
9648 * Return value:
9649 * none
9650 **/
9651 static void __ipr_remove(struct pci_dev *pdev)
9652 {
9653 unsigned long host_lock_flags = 0;
9654 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9655 int i;
9656 unsigned long driver_lock_flags;
9657 ENTER;
9658
9659 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9660 while (ioa_cfg->in_reset_reload) {
9661 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9662 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9663 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9664 }
9665
9666 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9667 spin_lock(&ioa_cfg->hrrq[i]._lock);
9668 ioa_cfg->hrrq[i].removing_ioa = 1;
9669 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9670 }
9671 wmb();
9672 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
9673
9674 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9675 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9676 flush_work(&ioa_cfg->work_q);
9677 if (ioa_cfg->reset_work_q)
9678 flush_workqueue(ioa_cfg->reset_work_q);
9679 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9680 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9681
9682 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
9683 list_del(&ioa_cfg->queue);
9684 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
9685
9686 if (ioa_cfg->sdt_state == ABORT_DUMP)
9687 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
9688 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9689
9690 ipr_free_all_resources(ioa_cfg);
9691
9692 LEAVE;
9693 }
9694
9695 /**
9696 * ipr_remove - IOA hot plug remove entry point
9697 * @pdev: pci device struct
9698 *
9699 * Adapter hot plug remove entry point.
9700 *
9701 * Return value:
9702 * none
9703 **/
9704 static void ipr_remove(struct pci_dev *pdev)
9705 {
9706 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9707
9708 ENTER;
9709
9710 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
9711 &ipr_trace_attr);
9712 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
9713 &ipr_dump_attr);
9714 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj,
9715 &ipr_ioa_async_err_log);
9716 scsi_remove_host(ioa_cfg->host);
9717
9718 __ipr_remove(pdev);
9719
9720 LEAVE;
9721 }
9722
9723 /**
9724 * ipr_probe - Adapter hot plug add entry point
9725 * @pdev: pci device struct
9726 * @dev_id: pci device ID
9727 *
9728 * Return value:
9729 * 0 on success / non-zero on failure
9730 **/
9731 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
9732 {
9733 struct ipr_ioa_cfg *ioa_cfg;
9734 unsigned long flags;
9735 int rc, i;
9736
9737 rc = ipr_probe_ioa(pdev, dev_id);
9738
9739 if (rc)
9740 return rc;
9741
9742 ioa_cfg = pci_get_drvdata(pdev);
9743 ipr_probe_ioa_part2(ioa_cfg);
9744
9745 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
9746
9747 if (rc) {
9748 __ipr_remove(pdev);
9749 return rc;
9750 }
9751
9752 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
9753 &ipr_trace_attr);
9754
9755 if (rc) {
9756 scsi_remove_host(ioa_cfg->host);
9757 __ipr_remove(pdev);
9758 return rc;
9759 }
9760
9761 rc = sysfs_create_bin_file(&ioa_cfg->host->shost_dev.kobj,
9762 &ipr_ioa_async_err_log);
9763
9764 if (rc) {
9765 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
9766 &ipr_dump_attr);
9767 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
9768 &ipr_trace_attr);
9769 scsi_remove_host(ioa_cfg->host);
9770 __ipr_remove(pdev);
9771 return rc;
9772 }
9773
9774 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
9775 &ipr_dump_attr);
9776
9777 if (rc) {
9778 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj,
9779 &ipr_ioa_async_err_log);
9780 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
9781 &ipr_trace_attr);
9782 scsi_remove_host(ioa_cfg->host);
9783 __ipr_remove(pdev);
9784 return rc;
9785 }
9786 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9787 ioa_cfg->scan_enabled = 1;
9788 schedule_work(&ioa_cfg->work_q);
9789 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9790
9791 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight;
9792
9793 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
9794 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
9795 irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
9796 ioa_cfg->iopoll_weight, ipr_iopoll);
9797 }
9798 }
9799
9800 scsi_scan_host(ioa_cfg->host);
9801
9802 return 0;
9803 }
9804
9805 /**
9806 * ipr_shutdown - Shutdown handler.
9807 * @pdev: pci device struct
9808 *
9809 * This function is invoked upon system shutdown/reboot. It will issue
9810 * an adapter shutdown to the adapter to flush the write cache.
9811 *
9812 * Return value:
9813 * none
9814 **/
9815 static void ipr_shutdown(struct pci_dev *pdev)
9816 {
9817 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9818 unsigned long lock_flags = 0;
9819 enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL;
9820 int i;
9821
9822 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9823 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
9824 ioa_cfg->iopoll_weight = 0;
9825 for (i = 1; i < ioa_cfg->hrrq_num; i++)
9826 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
9827 }
9828
9829 while (ioa_cfg->in_reset_reload) {
9830 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9831 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9832 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9833 }
9834
9835 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64)
9836 shutdown_type = IPR_SHUTDOWN_QUIESCE;
9837
9838 ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type);
9839 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9840 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9841 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) {
9842 ipr_free_irqs(ioa_cfg);
9843 pci_disable_device(ioa_cfg->pdev);
9844 }
9845 }
9846
9847 static struct pci_device_id ipr_pci_table[] = {
9848 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9849 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
9850 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9851 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
9852 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9853 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
9854 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9855 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
9856 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9857 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
9858 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9859 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
9860 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9861 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
9862 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9863 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
9864 IPR_USE_LONG_TRANSOP_TIMEOUT },
9865 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9866 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
9867 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9868 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
9869 IPR_USE_LONG_TRANSOP_TIMEOUT },
9870 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9871 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
9872 IPR_USE_LONG_TRANSOP_TIMEOUT },
9873 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9874 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
9875 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9876 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
9877 IPR_USE_LONG_TRANSOP_TIMEOUT},
9878 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9879 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
9880 IPR_USE_LONG_TRANSOP_TIMEOUT },
9881 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9882 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
9883 IPR_USE_LONG_TRANSOP_TIMEOUT },
9884 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9885 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
9886 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9887 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
9888 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9889 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
9890 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
9891 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
9892 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
9893 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9894 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
9895 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9896 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
9897 IPR_USE_LONG_TRANSOP_TIMEOUT },
9898 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9899 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
9900 IPR_USE_LONG_TRANSOP_TIMEOUT },
9901 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9902 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
9903 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9904 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
9905 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9906 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
9907 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9908 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 },
9909 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9910 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
9911 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9912 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
9913 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9914 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
9915 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9916 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
9917 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9918 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
9919 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9920 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 },
9921 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9922 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
9923 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9924 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 },
9925 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9926 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 },
9927 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9928 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 },
9929 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9930 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 },
9931 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9932 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 },
9933 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9934 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 },
9935 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9936 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 },
9937 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9938 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 },
9939 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9940 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 },
9941 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9942 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 },
9943 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9944 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 },
9945 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9946 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 },
9947 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9948 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 },
9949 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9950 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 },
9951 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9952 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 },
9953 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE,
9954 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580A, 0, 0, 0 },
9955 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE,
9956 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580B, 0, 0, 0 },
9957 { }
9958 };
9959 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
9960
9961 static const struct pci_error_handlers ipr_err_handler = {
9962 .error_detected = ipr_pci_error_detected,
9963 .mmio_enabled = ipr_pci_mmio_enabled,
9964 .slot_reset = ipr_pci_slot_reset,
9965 };
9966
9967 static struct pci_driver ipr_driver = {
9968 .name = IPR_NAME,
9969 .id_table = ipr_pci_table,
9970 .probe = ipr_probe,
9971 .remove = ipr_remove,
9972 .shutdown = ipr_shutdown,
9973 .err_handler = &ipr_err_handler,
9974 };
9975
9976 /**
9977 * ipr_halt_done - Shutdown prepare completion
9978 * @ipr_cmd: ipr command struct
9979 *
9980 * Return value:
9981 * none
9982 **/
9983 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
9984 {
9985 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9986 }
9987
9988 /**
9989 * ipr_halt - Issue shutdown prepare to all adapters
9990 * @nb: Notifier block
9991 * @event: Notifier event
9992 * @buf: Notifier data (unused)
9993 *
9994 * Return value:
9995 * NOTIFY_OK on success / NOTIFY_DONE on failure
9996 **/
9997 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
9998 {
9999 struct ipr_cmnd *ipr_cmd;
10000 struct ipr_ioa_cfg *ioa_cfg;
10001 unsigned long flags = 0, driver_lock_flags;
10002
10003 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
10004 return NOTIFY_DONE;
10005
10006 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10007
10008 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
10009 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10010 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds ||
10011 (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) {
10012 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10013 continue;
10014 }
10015
10016 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
10017 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
10018 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
10019 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
10020 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
10021
10022 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
10023 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10024 }
10025 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10026
10027 return NOTIFY_OK;
10028 }
10029
10030 static struct notifier_block ipr_notifier = {
10031 ipr_halt, NULL, 0
10032 };
10033
10034 /**
10035 * ipr_init - Module entry point
10036 *
10037 * Return value:
10038 * 0 on success / negative value on failure
10039 **/
10040 static int __init ipr_init(void)
10041 {
10042 int rc;
10043
10044 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
10045 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
10046
10047 register_reboot_notifier(&ipr_notifier);
10048 rc = pci_register_driver(&ipr_driver);
10049 if (rc) {
10050 unregister_reboot_notifier(&ipr_notifier);
10051 return rc;
10052 }
10053
10054 return 0;
10055 }
10056
10057 /**
10058 * ipr_exit - Module unload
10059 *
10060 * Module unload entry point.
10061 *
10062 * Return value:
10063 * none
10064 **/
10065 static void __exit ipr_exit(void)
10066 {
10067 unregister_reboot_notifier(&ipr_notifier);
10068 pci_unregister_driver(&ipr_driver);
10069 }
10070
10071 module_init(ipr_init);
10072 module_exit(ipr_exit);
Kernel DRM miscellaneous fixes and cross-tree changes