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Merge remote-tracking branch 'mkp-scsi/4.5/scsi-fixes' into fixes
[deliverable/linux.git] / drivers / scsi / ipr.c
1 /*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 /*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
57 #include <linux/fs.h>
58 #include <linux/init.h>
59 #include <linux/types.h>
60 #include <linux/errno.h>
61 #include <linux/kernel.h>
62 #include <linux/slab.h>
63 #include <linux/vmalloc.h>
64 #include <linux/ioport.h>
65 #include <linux/delay.h>
66 #include <linux/pci.h>
67 #include <linux/wait.h>
68 #include <linux/spinlock.h>
69 #include <linux/sched.h>
70 #include <linux/interrupt.h>
71 #include <linux/blkdev.h>
72 #include <linux/firmware.h>
73 #include <linux/module.h>
74 #include <linux/moduleparam.h>
75 #include <linux/libata.h>
76 #include <linux/hdreg.h>
77 #include <linux/reboot.h>
78 #include <linux/stringify.h>
79 #include <asm/io.h>
80 #include <asm/irq.h>
81 #include <asm/processor.h>
82 #include <scsi/scsi.h>
83 #include <scsi/scsi_host.h>
84 #include <scsi/scsi_tcq.h>
85 #include <scsi/scsi_eh.h>
86 #include <scsi/scsi_cmnd.h>
87 #include "ipr.h"
88
89 /*
90 * Global Data
91 */
92 static LIST_HEAD(ipr_ioa_head);
93 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
94 static unsigned int ipr_max_speed = 1;
95 static int ipr_testmode = 0;
96 static unsigned int ipr_fastfail = 0;
97 static unsigned int ipr_transop_timeout = 0;
98 static unsigned int ipr_debug = 0;
99 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
100 static unsigned int ipr_dual_ioa_raid = 1;
101 static unsigned int ipr_number_of_msix = 2;
102 static unsigned int ipr_fast_reboot;
103 static DEFINE_SPINLOCK(ipr_driver_lock);
104
105 /* This table describes the differences between DMA controller chips */
106 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
107 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
108 .mailbox = 0x0042C,
109 .max_cmds = 100,
110 .cache_line_size = 0x20,
111 .clear_isr = 1,
112 .iopoll_weight = 0,
113 {
114 .set_interrupt_mask_reg = 0x0022C,
115 .clr_interrupt_mask_reg = 0x00230,
116 .clr_interrupt_mask_reg32 = 0x00230,
117 .sense_interrupt_mask_reg = 0x0022C,
118 .sense_interrupt_mask_reg32 = 0x0022C,
119 .clr_interrupt_reg = 0x00228,
120 .clr_interrupt_reg32 = 0x00228,
121 .sense_interrupt_reg = 0x00224,
122 .sense_interrupt_reg32 = 0x00224,
123 .ioarrin_reg = 0x00404,
124 .sense_uproc_interrupt_reg = 0x00214,
125 .sense_uproc_interrupt_reg32 = 0x00214,
126 .set_uproc_interrupt_reg = 0x00214,
127 .set_uproc_interrupt_reg32 = 0x00214,
128 .clr_uproc_interrupt_reg = 0x00218,
129 .clr_uproc_interrupt_reg32 = 0x00218
130 }
131 },
132 { /* Snipe and Scamp */
133 .mailbox = 0x0052C,
134 .max_cmds = 100,
135 .cache_line_size = 0x20,
136 .clear_isr = 1,
137 .iopoll_weight = 0,
138 {
139 .set_interrupt_mask_reg = 0x00288,
140 .clr_interrupt_mask_reg = 0x0028C,
141 .clr_interrupt_mask_reg32 = 0x0028C,
142 .sense_interrupt_mask_reg = 0x00288,
143 .sense_interrupt_mask_reg32 = 0x00288,
144 .clr_interrupt_reg = 0x00284,
145 .clr_interrupt_reg32 = 0x00284,
146 .sense_interrupt_reg = 0x00280,
147 .sense_interrupt_reg32 = 0x00280,
148 .ioarrin_reg = 0x00504,
149 .sense_uproc_interrupt_reg = 0x00290,
150 .sense_uproc_interrupt_reg32 = 0x00290,
151 .set_uproc_interrupt_reg = 0x00290,
152 .set_uproc_interrupt_reg32 = 0x00290,
153 .clr_uproc_interrupt_reg = 0x00294,
154 .clr_uproc_interrupt_reg32 = 0x00294
155 }
156 },
157 { /* CRoC */
158 .mailbox = 0x00044,
159 .max_cmds = 1000,
160 .cache_line_size = 0x20,
161 .clear_isr = 0,
162 .iopoll_weight = 64,
163 {
164 .set_interrupt_mask_reg = 0x00010,
165 .clr_interrupt_mask_reg = 0x00018,
166 .clr_interrupt_mask_reg32 = 0x0001C,
167 .sense_interrupt_mask_reg = 0x00010,
168 .sense_interrupt_mask_reg32 = 0x00014,
169 .clr_interrupt_reg = 0x00008,
170 .clr_interrupt_reg32 = 0x0000C,
171 .sense_interrupt_reg = 0x00000,
172 .sense_interrupt_reg32 = 0x00004,
173 .ioarrin_reg = 0x00070,
174 .sense_uproc_interrupt_reg = 0x00020,
175 .sense_uproc_interrupt_reg32 = 0x00024,
176 .set_uproc_interrupt_reg = 0x00020,
177 .set_uproc_interrupt_reg32 = 0x00024,
178 .clr_uproc_interrupt_reg = 0x00028,
179 .clr_uproc_interrupt_reg32 = 0x0002C,
180 .init_feedback_reg = 0x0005C,
181 .dump_addr_reg = 0x00064,
182 .dump_data_reg = 0x00068,
183 .endian_swap_reg = 0x00084
184 }
185 },
186 };
187
188 static const struct ipr_chip_t ipr_chip[] = {
189 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
190 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
191 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
192 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
193 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
194 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
195 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
196 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
197 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
198 };
199
200 static int ipr_max_bus_speeds[] = {
201 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
202 };
203
204 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
205 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
206 module_param_named(max_speed, ipr_max_speed, uint, 0);
207 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
208 module_param_named(log_level, ipr_log_level, uint, 0);
209 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
210 module_param_named(testmode, ipr_testmode, int, 0);
211 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
212 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
213 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
214 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
215 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
216 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
217 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
218 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
219 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
220 module_param_named(max_devs, ipr_max_devs, int, 0);
221 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
222 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
223 module_param_named(number_of_msix, ipr_number_of_msix, int, 0);
224 MODULE_PARM_DESC(number_of_msix, "Specify the number of MSIX interrupts to use on capable adapters (1 - 16). (default:2)");
225 module_param_named(fast_reboot, ipr_fast_reboot, int, S_IRUGO | S_IWUSR);
226 MODULE_PARM_DESC(fast_reboot, "Skip adapter shutdown during reboot. Set to 1 to enable. (default: 0)");
227 MODULE_LICENSE("GPL");
228 MODULE_VERSION(IPR_DRIVER_VERSION);
229
230 /* A constant array of IOASCs/URCs/Error Messages */
231 static const
232 struct ipr_error_table_t ipr_error_table[] = {
233 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
234 "8155: An unknown error was received"},
235 {0x00330000, 0, 0,
236 "Soft underlength error"},
237 {0x005A0000, 0, 0,
238 "Command to be cancelled not found"},
239 {0x00808000, 0, 0,
240 "Qualified success"},
241 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
242 "FFFE: Soft device bus error recovered by the IOA"},
243 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
244 "4101: Soft device bus fabric error"},
245 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
246 "FFFC: Logical block guard error recovered by the device"},
247 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
248 "FFFC: Logical block reference tag error recovered by the device"},
249 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
250 "4171: Recovered scatter list tag / sequence number error"},
251 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
252 "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
253 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
254 "4171: Recovered logical block sequence number error on IOA to Host transfer"},
255 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
256 "FFFD: Recovered logical block reference tag error detected by the IOA"},
257 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
258 "FFFD: Logical block guard error recovered by the IOA"},
259 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
260 "FFF9: Device sector reassign successful"},
261 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
262 "FFF7: Media error recovered by device rewrite procedures"},
263 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
264 "7001: IOA sector reassignment successful"},
265 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
266 "FFF9: Soft media error. Sector reassignment recommended"},
267 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
268 "FFF7: Media error recovered by IOA rewrite procedures"},
269 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
270 "FF3D: Soft PCI bus error recovered by the IOA"},
271 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
272 "FFF6: Device hardware error recovered by the IOA"},
273 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
274 "FFF6: Device hardware error recovered by the device"},
275 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
276 "FF3D: Soft IOA error recovered by the IOA"},
277 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
278 "FFFA: Undefined device response recovered by the IOA"},
279 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
280 "FFF6: Device bus error, message or command phase"},
281 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
282 "FFFE: Task Management Function failed"},
283 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
284 "FFF6: Failure prediction threshold exceeded"},
285 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
286 "8009: Impending cache battery pack failure"},
287 {0x02040100, 0, 0,
288 "Logical Unit in process of becoming ready"},
289 {0x02040200, 0, 0,
290 "Initializing command required"},
291 {0x02040400, 0, 0,
292 "34FF: Disk device format in progress"},
293 {0x02040C00, 0, 0,
294 "Logical unit not accessible, target port in unavailable state"},
295 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
296 "9070: IOA requested reset"},
297 {0x023F0000, 0, 0,
298 "Synchronization required"},
299 {0x02408500, 0, 0,
300 "IOA microcode download required"},
301 {0x02408600, 0, 0,
302 "Device bus connection is prohibited by host"},
303 {0x024E0000, 0, 0,
304 "No ready, IOA shutdown"},
305 {0x025A0000, 0, 0,
306 "Not ready, IOA has been shutdown"},
307 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
308 "3020: Storage subsystem configuration error"},
309 {0x03110B00, 0, 0,
310 "FFF5: Medium error, data unreadable, recommend reassign"},
311 {0x03110C00, 0, 0,
312 "7000: Medium error, data unreadable, do not reassign"},
313 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
314 "FFF3: Disk media format bad"},
315 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
316 "3002: Addressed device failed to respond to selection"},
317 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
318 "3100: Device bus error"},
319 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
320 "3109: IOA timed out a device command"},
321 {0x04088000, 0, 0,
322 "3120: SCSI bus is not operational"},
323 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
324 "4100: Hard device bus fabric error"},
325 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
326 "310C: Logical block guard error detected by the device"},
327 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
328 "310C: Logical block reference tag error detected by the device"},
329 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
330 "4170: Scatter list tag / sequence number error"},
331 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
332 "8150: Logical block CRC error on IOA to Host transfer"},
333 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
334 "4170: Logical block sequence number error on IOA to Host transfer"},
335 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
336 "310D: Logical block reference tag error detected by the IOA"},
337 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
338 "310D: Logical block guard error detected by the IOA"},
339 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
340 "9000: IOA reserved area data check"},
341 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
342 "9001: IOA reserved area invalid data pattern"},
343 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
344 "9002: IOA reserved area LRC error"},
345 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
346 "Hardware Error, IOA metadata access error"},
347 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
348 "102E: Out of alternate sectors for disk storage"},
349 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
350 "FFF4: Data transfer underlength error"},
351 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
352 "FFF4: Data transfer overlength error"},
353 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
354 "3400: Logical unit failure"},
355 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
356 "FFF4: Device microcode is corrupt"},
357 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
358 "8150: PCI bus error"},
359 {0x04430000, 1, 0,
360 "Unsupported device bus message received"},
361 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
362 "FFF4: Disk device problem"},
363 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
364 "8150: Permanent IOA failure"},
365 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
366 "3010: Disk device returned wrong response to IOA"},
367 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
368 "8151: IOA microcode error"},
369 {0x04448500, 0, 0,
370 "Device bus status error"},
371 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
372 "8157: IOA error requiring IOA reset to recover"},
373 {0x04448700, 0, 0,
374 "ATA device status error"},
375 {0x04490000, 0, 0,
376 "Message reject received from the device"},
377 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
378 "8008: A permanent cache battery pack failure occurred"},
379 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
380 "9090: Disk unit has been modified after the last known status"},
381 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
382 "9081: IOA detected device error"},
383 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
384 "9082: IOA detected device error"},
385 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
386 "3110: Device bus error, message or command phase"},
387 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
388 "3110: SAS Command / Task Management Function failed"},
389 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
390 "9091: Incorrect hardware configuration change has been detected"},
391 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
392 "9073: Invalid multi-adapter configuration"},
393 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
394 "4010: Incorrect connection between cascaded expanders"},
395 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
396 "4020: Connections exceed IOA design limits"},
397 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
398 "4030: Incorrect multipath connection"},
399 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
400 "4110: Unsupported enclosure function"},
401 {0x04679800, 0, IPR_DEFAULT_LOG_LEVEL,
402 "4120: SAS cable VPD cannot be read"},
403 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
404 "FFF4: Command to logical unit failed"},
405 {0x05240000, 1, 0,
406 "Illegal request, invalid request type or request packet"},
407 {0x05250000, 0, 0,
408 "Illegal request, invalid resource handle"},
409 {0x05258000, 0, 0,
410 "Illegal request, commands not allowed to this device"},
411 {0x05258100, 0, 0,
412 "Illegal request, command not allowed to a secondary adapter"},
413 {0x05258200, 0, 0,
414 "Illegal request, command not allowed to a non-optimized resource"},
415 {0x05260000, 0, 0,
416 "Illegal request, invalid field in parameter list"},
417 {0x05260100, 0, 0,
418 "Illegal request, parameter not supported"},
419 {0x05260200, 0, 0,
420 "Illegal request, parameter value invalid"},
421 {0x052C0000, 0, 0,
422 "Illegal request, command sequence error"},
423 {0x052C8000, 1, 0,
424 "Illegal request, dual adapter support not enabled"},
425 {0x052C8100, 1, 0,
426 "Illegal request, another cable connector was physically disabled"},
427 {0x054E8000, 1, 0,
428 "Illegal request, inconsistent group id/group count"},
429 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
430 "9031: Array protection temporarily suspended, protection resuming"},
431 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
432 "9040: Array protection temporarily suspended, protection resuming"},
433 {0x060B0100, 0, IPR_DEFAULT_LOG_LEVEL,
434 "4080: IOA exceeded maximum operating temperature"},
435 {0x060B8000, 0, IPR_DEFAULT_LOG_LEVEL,
436 "4085: Service required"},
437 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
438 "3140: Device bus not ready to ready transition"},
439 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
440 "FFFB: SCSI bus was reset"},
441 {0x06290500, 0, 0,
442 "FFFE: SCSI bus transition to single ended"},
443 {0x06290600, 0, 0,
444 "FFFE: SCSI bus transition to LVD"},
445 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
446 "FFFB: SCSI bus was reset by another initiator"},
447 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
448 "3029: A device replacement has occurred"},
449 {0x063F8300, 0, IPR_DEFAULT_LOG_LEVEL,
450 "4102: Device bus fabric performance degradation"},
451 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
452 "9051: IOA cache data exists for a missing or failed device"},
453 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
454 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
455 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
456 "9025: Disk unit is not supported at its physical location"},
457 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
458 "3020: IOA detected a SCSI bus configuration error"},
459 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
460 "3150: SCSI bus configuration error"},
461 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
462 "9074: Asymmetric advanced function disk configuration"},
463 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
464 "4040: Incomplete multipath connection between IOA and enclosure"},
465 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
466 "4041: Incomplete multipath connection between enclosure and device"},
467 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
468 "9075: Incomplete multipath connection between IOA and remote IOA"},
469 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
470 "9076: Configuration error, missing remote IOA"},
471 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
472 "4050: Enclosure does not support a required multipath function"},
473 {0x06679800, 0, IPR_DEFAULT_LOG_LEVEL,
474 "4121: Configuration error, required cable is missing"},
475 {0x06679900, 0, IPR_DEFAULT_LOG_LEVEL,
476 "4122: Cable is not plugged into the correct location on remote IOA"},
477 {0x06679A00, 0, IPR_DEFAULT_LOG_LEVEL,
478 "4123: Configuration error, invalid cable vital product data"},
479 {0x06679B00, 0, IPR_DEFAULT_LOG_LEVEL,
480 "4124: Configuration error, both cable ends are plugged into the same IOA"},
481 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
482 "4070: Logically bad block written on device"},
483 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
484 "9041: Array protection temporarily suspended"},
485 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
486 "9042: Corrupt array parity detected on specified device"},
487 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
488 "9030: Array no longer protected due to missing or failed disk unit"},
489 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
490 "9071: Link operational transition"},
491 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
492 "9072: Link not operational transition"},
493 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
494 "9032: Array exposed but still protected"},
495 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
496 "70DD: Device forced failed by disrupt device command"},
497 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
498 "4061: Multipath redundancy level got better"},
499 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
500 "4060: Multipath redundancy level got worse"},
501 {0x06808100, 0, IPR_DEFAULT_LOG_LEVEL,
502 "9083: Device raw mode enabled"},
503 {0x06808200, 0, IPR_DEFAULT_LOG_LEVEL,
504 "9084: Device raw mode disabled"},
505 {0x07270000, 0, 0,
506 "Failure due to other device"},
507 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
508 "9008: IOA does not support functions expected by devices"},
509 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
510 "9010: Cache data associated with attached devices cannot be found"},
511 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
512 "9011: Cache data belongs to devices other than those attached"},
513 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
514 "9020: Array missing 2 or more devices with only 1 device present"},
515 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
516 "9021: Array missing 2 or more devices with 2 or more devices present"},
517 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
518 "9022: Exposed array is missing a required device"},
519 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
520 "9023: Array member(s) not at required physical locations"},
521 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
522 "9024: Array not functional due to present hardware configuration"},
523 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
524 "9026: Array not functional due to present hardware configuration"},
525 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
526 "9027: Array is missing a device and parity is out of sync"},
527 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
528 "9028: Maximum number of arrays already exist"},
529 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
530 "9050: Required cache data cannot be located for a disk unit"},
531 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
532 "9052: Cache data exists for a device that has been modified"},
533 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
534 "9054: IOA resources not available due to previous problems"},
535 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
536 "9092: Disk unit requires initialization before use"},
537 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
538 "9029: Incorrect hardware configuration change has been detected"},
539 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
540 "9060: One or more disk pairs are missing from an array"},
541 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
542 "9061: One or more disks are missing from an array"},
543 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
544 "9062: One or more disks are missing from an array"},
545 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
546 "9063: Maximum number of functional arrays has been exceeded"},
547 {0x07279A00, 0, 0,
548 "Data protect, other volume set problem"},
549 {0x0B260000, 0, 0,
550 "Aborted command, invalid descriptor"},
551 {0x0B3F9000, 0, 0,
552 "Target operating conditions have changed, dual adapter takeover"},
553 {0x0B530200, 0, 0,
554 "Aborted command, medium removal prevented"},
555 {0x0B5A0000, 0, 0,
556 "Command terminated by host"},
557 {0x0B5B8000, 0, 0,
558 "Aborted command, command terminated by host"}
559 };
560
561 static const struct ipr_ses_table_entry ipr_ses_table[] = {
562 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
563 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
564 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
565 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
566 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
567 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
568 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
569 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
570 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
571 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
572 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
573 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
574 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
575 };
576
577 /*
578 * Function Prototypes
579 */
580 static int ipr_reset_alert(struct ipr_cmnd *);
581 static void ipr_process_ccn(struct ipr_cmnd *);
582 static void ipr_process_error(struct ipr_cmnd *);
583 static void ipr_reset_ioa_job(struct ipr_cmnd *);
584 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
585 enum ipr_shutdown_type);
586
587 #ifdef CONFIG_SCSI_IPR_TRACE
588 /**
589 * ipr_trc_hook - Add a trace entry to the driver trace
590 * @ipr_cmd: ipr command struct
591 * @type: trace type
592 * @add_data: additional data
593 *
594 * Return value:
595 * none
596 **/
597 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
598 u8 type, u32 add_data)
599 {
600 struct ipr_trace_entry *trace_entry;
601 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
602 unsigned int trace_index;
603
604 trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK;
605 trace_entry = &ioa_cfg->trace[trace_index];
606 trace_entry->time = jiffies;
607 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
608 trace_entry->type = type;
609 if (ipr_cmd->ioa_cfg->sis64)
610 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
611 else
612 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
613 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
614 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
615 trace_entry->u.add_data = add_data;
616 wmb();
617 }
618 #else
619 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0)
620 #endif
621
622 /**
623 * ipr_lock_and_done - Acquire lock and complete command
624 * @ipr_cmd: ipr command struct
625 *
626 * Return value:
627 * none
628 **/
629 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd)
630 {
631 unsigned long lock_flags;
632 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
633
634 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
635 ipr_cmd->done(ipr_cmd);
636 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
637 }
638
639 /**
640 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
641 * @ipr_cmd: ipr command struct
642 *
643 * Return value:
644 * none
645 **/
646 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
647 {
648 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
649 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
650 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
651 dma_addr_t dma_addr = ipr_cmd->dma_addr;
652 int hrrq_id;
653
654 hrrq_id = ioarcb->cmd_pkt.hrrq_id;
655 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
656 ioarcb->cmd_pkt.hrrq_id = hrrq_id;
657 ioarcb->data_transfer_length = 0;
658 ioarcb->read_data_transfer_length = 0;
659 ioarcb->ioadl_len = 0;
660 ioarcb->read_ioadl_len = 0;
661
662 if (ipr_cmd->ioa_cfg->sis64) {
663 ioarcb->u.sis64_addr_data.data_ioadl_addr =
664 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
665 ioasa64->u.gata.status = 0;
666 } else {
667 ioarcb->write_ioadl_addr =
668 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
669 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
670 ioasa->u.gata.status = 0;
671 }
672
673 ioasa->hdr.ioasc = 0;
674 ioasa->hdr.residual_data_len = 0;
675 ipr_cmd->scsi_cmd = NULL;
676 ipr_cmd->qc = NULL;
677 ipr_cmd->sense_buffer[0] = 0;
678 ipr_cmd->dma_use_sg = 0;
679 }
680
681 /**
682 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
683 * @ipr_cmd: ipr command struct
684 *
685 * Return value:
686 * none
687 **/
688 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd,
689 void (*fast_done) (struct ipr_cmnd *))
690 {
691 ipr_reinit_ipr_cmnd(ipr_cmd);
692 ipr_cmd->u.scratch = 0;
693 ipr_cmd->sibling = NULL;
694 ipr_cmd->eh_comp = NULL;
695 ipr_cmd->fast_done = fast_done;
696 init_timer(&ipr_cmd->timer);
697 }
698
699 /**
700 * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
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_hrr_queue *hrrq)
708 {
709 struct ipr_cmnd *ipr_cmd = NULL;
710
711 if (likely(!list_empty(&hrrq->hrrq_free_q))) {
712 ipr_cmd = list_entry(hrrq->hrrq_free_q.next,
713 struct ipr_cmnd, queue);
714 list_del(&ipr_cmd->queue);
715 }
716
717
718 return ipr_cmd;
719 }
720
721 /**
722 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it
723 * @ioa_cfg: ioa config struct
724 *
725 * Return value:
726 * pointer to ipr command struct
727 **/
728 static
729 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
730 {
731 struct ipr_cmnd *ipr_cmd =
732 __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]);
733 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
734 return ipr_cmd;
735 }
736
737 /**
738 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
739 * @ioa_cfg: ioa config struct
740 * @clr_ints: interrupts to clear
741 *
742 * This function masks all interrupts on the adapter, then clears the
743 * interrupts specified in the mask
744 *
745 * Return value:
746 * none
747 **/
748 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
749 u32 clr_ints)
750 {
751 volatile u32 int_reg;
752 int i;
753
754 /* Stop new interrupts */
755 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
756 spin_lock(&ioa_cfg->hrrq[i]._lock);
757 ioa_cfg->hrrq[i].allow_interrupts = 0;
758 spin_unlock(&ioa_cfg->hrrq[i]._lock);
759 }
760 wmb();
761
762 /* Set interrupt mask to stop all new interrupts */
763 if (ioa_cfg->sis64)
764 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
765 else
766 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
767
768 /* Clear any pending interrupts */
769 if (ioa_cfg->sis64)
770 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
771 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
772 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
773 }
774
775 /**
776 * ipr_save_pcix_cmd_reg - Save PCI-X command register
777 * @ioa_cfg: ioa config struct
778 *
779 * Return value:
780 * 0 on success / -EIO on failure
781 **/
782 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
783 {
784 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
785
786 if (pcix_cmd_reg == 0)
787 return 0;
788
789 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
790 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
791 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
792 return -EIO;
793 }
794
795 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
796 return 0;
797 }
798
799 /**
800 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
801 * @ioa_cfg: ioa config struct
802 *
803 * Return value:
804 * 0 on success / -EIO on failure
805 **/
806 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
807 {
808 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
809
810 if (pcix_cmd_reg) {
811 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
812 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
813 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
814 return -EIO;
815 }
816 }
817
818 return 0;
819 }
820
821 /**
822 * ipr_sata_eh_done - done function for aborted SATA commands
823 * @ipr_cmd: ipr command struct
824 *
825 * This function is invoked for ops generated to SATA
826 * devices which are being aborted.
827 *
828 * Return value:
829 * none
830 **/
831 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
832 {
833 struct ata_queued_cmd *qc = ipr_cmd->qc;
834 struct ipr_sata_port *sata_port = qc->ap->private_data;
835
836 qc->err_mask |= AC_ERR_OTHER;
837 sata_port->ioasa.status |= ATA_BUSY;
838 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
839 ata_qc_complete(qc);
840 }
841
842 /**
843 * ipr_scsi_eh_done - mid-layer done function for aborted ops
844 * @ipr_cmd: ipr command struct
845 *
846 * This function is invoked by the interrupt handler for
847 * ops generated by the SCSI mid-layer which are being aborted.
848 *
849 * Return value:
850 * none
851 **/
852 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
853 {
854 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
855
856 scsi_cmd->result |= (DID_ERROR << 16);
857
858 scsi_dma_unmap(ipr_cmd->scsi_cmd);
859 scsi_cmd->scsi_done(scsi_cmd);
860 if (ipr_cmd->eh_comp)
861 complete(ipr_cmd->eh_comp);
862 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
863 }
864
865 /**
866 * ipr_fail_all_ops - Fails all outstanding ops.
867 * @ioa_cfg: ioa config struct
868 *
869 * This function fails all outstanding ops.
870 *
871 * Return value:
872 * none
873 **/
874 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
875 {
876 struct ipr_cmnd *ipr_cmd, *temp;
877 struct ipr_hrr_queue *hrrq;
878
879 ENTER;
880 for_each_hrrq(hrrq, ioa_cfg) {
881 spin_lock(&hrrq->_lock);
882 list_for_each_entry_safe(ipr_cmd,
883 temp, &hrrq->hrrq_pending_q, queue) {
884 list_del(&ipr_cmd->queue);
885
886 ipr_cmd->s.ioasa.hdr.ioasc =
887 cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
888 ipr_cmd->s.ioasa.hdr.ilid =
889 cpu_to_be32(IPR_DRIVER_ILID);
890
891 if (ipr_cmd->scsi_cmd)
892 ipr_cmd->done = ipr_scsi_eh_done;
893 else if (ipr_cmd->qc)
894 ipr_cmd->done = ipr_sata_eh_done;
895
896 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH,
897 IPR_IOASC_IOA_WAS_RESET);
898 del_timer(&ipr_cmd->timer);
899 ipr_cmd->done(ipr_cmd);
900 }
901 spin_unlock(&hrrq->_lock);
902 }
903 LEAVE;
904 }
905
906 /**
907 * ipr_send_command - Send driver initiated requests.
908 * @ipr_cmd: ipr command struct
909 *
910 * This function sends a command to the adapter using the correct write call.
911 * In the case of sis64, calculate the ioarcb size required. Then or in the
912 * appropriate bits.
913 *
914 * Return value:
915 * none
916 **/
917 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
918 {
919 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
920 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
921
922 if (ioa_cfg->sis64) {
923 /* The default size is 256 bytes */
924 send_dma_addr |= 0x1;
925
926 /* If the number of ioadls * size of ioadl > 128 bytes,
927 then use a 512 byte ioarcb */
928 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
929 send_dma_addr |= 0x4;
930 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
931 } else
932 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
933 }
934
935 /**
936 * ipr_do_req - Send driver initiated requests.
937 * @ipr_cmd: ipr command struct
938 * @done: done function
939 * @timeout_func: timeout function
940 * @timeout: timeout value
941 *
942 * This function sends the specified command to the adapter with the
943 * timeout given. The done function is invoked on command completion.
944 *
945 * Return value:
946 * none
947 **/
948 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
949 void (*done) (struct ipr_cmnd *),
950 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
951 {
952 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
953
954 ipr_cmd->done = done;
955
956 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
957 ipr_cmd->timer.expires = jiffies + timeout;
958 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
959
960 add_timer(&ipr_cmd->timer);
961
962 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
963
964 ipr_send_command(ipr_cmd);
965 }
966
967 /**
968 * ipr_internal_cmd_done - Op done function for an internally generated op.
969 * @ipr_cmd: ipr command struct
970 *
971 * This function is the op done function for an internally generated,
972 * blocking op. It simply wakes the sleeping thread.
973 *
974 * Return value:
975 * none
976 **/
977 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
978 {
979 if (ipr_cmd->sibling)
980 ipr_cmd->sibling = NULL;
981 else
982 complete(&ipr_cmd->completion);
983 }
984
985 /**
986 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
987 * @ipr_cmd: ipr command struct
988 * @dma_addr: dma address
989 * @len: transfer length
990 * @flags: ioadl flag value
991 *
992 * This function initializes an ioadl in the case where there is only a single
993 * descriptor.
994 *
995 * Return value:
996 * nothing
997 **/
998 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
999 u32 len, int flags)
1000 {
1001 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
1002 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
1003
1004 ipr_cmd->dma_use_sg = 1;
1005
1006 if (ipr_cmd->ioa_cfg->sis64) {
1007 ioadl64->flags = cpu_to_be32(flags);
1008 ioadl64->data_len = cpu_to_be32(len);
1009 ioadl64->address = cpu_to_be64(dma_addr);
1010
1011 ipr_cmd->ioarcb.ioadl_len =
1012 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
1013 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1014 } else {
1015 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
1016 ioadl->address = cpu_to_be32(dma_addr);
1017
1018 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
1019 ipr_cmd->ioarcb.read_ioadl_len =
1020 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1021 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
1022 } else {
1023 ipr_cmd->ioarcb.ioadl_len =
1024 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1025 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1026 }
1027 }
1028 }
1029
1030 /**
1031 * ipr_send_blocking_cmd - Send command and sleep on its completion.
1032 * @ipr_cmd: ipr command struct
1033 * @timeout_func: function to invoke if command times out
1034 * @timeout: timeout
1035 *
1036 * Return value:
1037 * none
1038 **/
1039 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
1040 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
1041 u32 timeout)
1042 {
1043 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1044
1045 init_completion(&ipr_cmd->completion);
1046 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
1047
1048 spin_unlock_irq(ioa_cfg->host->host_lock);
1049 wait_for_completion(&ipr_cmd->completion);
1050 spin_lock_irq(ioa_cfg->host->host_lock);
1051 }
1052
1053 static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg)
1054 {
1055 unsigned int hrrq;
1056
1057 if (ioa_cfg->hrrq_num == 1)
1058 hrrq = 0;
1059 else {
1060 hrrq = atomic_add_return(1, &ioa_cfg->hrrq_index);
1061 hrrq = (hrrq % (ioa_cfg->hrrq_num - 1)) + 1;
1062 }
1063 return hrrq;
1064 }
1065
1066 /**
1067 * ipr_send_hcam - Send an HCAM to the adapter.
1068 * @ioa_cfg: ioa config struct
1069 * @type: HCAM type
1070 * @hostrcb: hostrcb struct
1071 *
1072 * This function will send a Host Controlled Async command to the adapter.
1073 * If HCAMs are currently not allowed to be issued to the adapter, it will
1074 * place the hostrcb on the free queue.
1075 *
1076 * Return value:
1077 * none
1078 **/
1079 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
1080 struct ipr_hostrcb *hostrcb)
1081 {
1082 struct ipr_cmnd *ipr_cmd;
1083 struct ipr_ioarcb *ioarcb;
1084
1085 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
1086 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
1087 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
1088 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
1089
1090 ipr_cmd->u.hostrcb = hostrcb;
1091 ioarcb = &ipr_cmd->ioarcb;
1092
1093 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
1094 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
1095 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
1096 ioarcb->cmd_pkt.cdb[1] = type;
1097 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
1098 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
1099
1100 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
1101 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
1102
1103 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
1104 ipr_cmd->done = ipr_process_ccn;
1105 else
1106 ipr_cmd->done = ipr_process_error;
1107
1108 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
1109
1110 ipr_send_command(ipr_cmd);
1111 } else {
1112 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
1113 }
1114 }
1115
1116 /**
1117 * ipr_update_ata_class - Update the ata class in the resource entry
1118 * @res: resource entry struct
1119 * @proto: cfgte device bus protocol value
1120 *
1121 * Return value:
1122 * none
1123 **/
1124 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1125 {
1126 switch (proto) {
1127 case IPR_PROTO_SATA:
1128 case IPR_PROTO_SAS_STP:
1129 res->ata_class = ATA_DEV_ATA;
1130 break;
1131 case IPR_PROTO_SATA_ATAPI:
1132 case IPR_PROTO_SAS_STP_ATAPI:
1133 res->ata_class = ATA_DEV_ATAPI;
1134 break;
1135 default:
1136 res->ata_class = ATA_DEV_UNKNOWN;
1137 break;
1138 };
1139 }
1140
1141 /**
1142 * ipr_init_res_entry - Initialize a resource entry struct.
1143 * @res: resource entry struct
1144 * @cfgtew: config table entry wrapper struct
1145 *
1146 * Return value:
1147 * none
1148 **/
1149 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1150 struct ipr_config_table_entry_wrapper *cfgtew)
1151 {
1152 int found = 0;
1153 unsigned int proto;
1154 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1155 struct ipr_resource_entry *gscsi_res = NULL;
1156
1157 res->needs_sync_complete = 0;
1158 res->in_erp = 0;
1159 res->add_to_ml = 0;
1160 res->del_from_ml = 0;
1161 res->resetting_device = 0;
1162 res->reset_occurred = 0;
1163 res->sdev = NULL;
1164 res->sata_port = NULL;
1165
1166 if (ioa_cfg->sis64) {
1167 proto = cfgtew->u.cfgte64->proto;
1168 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1169 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1170 res->qmodel = IPR_QUEUEING_MODEL64(res);
1171 res->type = cfgtew->u.cfgte64->res_type;
1172
1173 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1174 sizeof(res->res_path));
1175
1176 res->bus = 0;
1177 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1178 sizeof(res->dev_lun.scsi_lun));
1179 res->lun = scsilun_to_int(&res->dev_lun);
1180
1181 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1182 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1183 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1184 found = 1;
1185 res->target = gscsi_res->target;
1186 break;
1187 }
1188 }
1189 if (!found) {
1190 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1191 ioa_cfg->max_devs_supported);
1192 set_bit(res->target, ioa_cfg->target_ids);
1193 }
1194 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1195 res->bus = IPR_IOAFP_VIRTUAL_BUS;
1196 res->target = 0;
1197 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1198 res->bus = IPR_ARRAY_VIRTUAL_BUS;
1199 res->target = find_first_zero_bit(ioa_cfg->array_ids,
1200 ioa_cfg->max_devs_supported);
1201 set_bit(res->target, ioa_cfg->array_ids);
1202 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1203 res->bus = IPR_VSET_VIRTUAL_BUS;
1204 res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1205 ioa_cfg->max_devs_supported);
1206 set_bit(res->target, ioa_cfg->vset_ids);
1207 } else {
1208 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1209 ioa_cfg->max_devs_supported);
1210 set_bit(res->target, ioa_cfg->target_ids);
1211 }
1212 } else {
1213 proto = cfgtew->u.cfgte->proto;
1214 res->qmodel = IPR_QUEUEING_MODEL(res);
1215 res->flags = cfgtew->u.cfgte->flags;
1216 if (res->flags & IPR_IS_IOA_RESOURCE)
1217 res->type = IPR_RES_TYPE_IOAFP;
1218 else
1219 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1220
1221 res->bus = cfgtew->u.cfgte->res_addr.bus;
1222 res->target = cfgtew->u.cfgte->res_addr.target;
1223 res->lun = cfgtew->u.cfgte->res_addr.lun;
1224 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1225 }
1226
1227 ipr_update_ata_class(res, proto);
1228 }
1229
1230 /**
1231 * ipr_is_same_device - Determine if two devices are the same.
1232 * @res: resource entry struct
1233 * @cfgtew: config table entry wrapper struct
1234 *
1235 * Return value:
1236 * 1 if the devices are the same / 0 otherwise
1237 **/
1238 static int ipr_is_same_device(struct ipr_resource_entry *res,
1239 struct ipr_config_table_entry_wrapper *cfgtew)
1240 {
1241 if (res->ioa_cfg->sis64) {
1242 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1243 sizeof(cfgtew->u.cfgte64->dev_id)) &&
1244 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1245 sizeof(cfgtew->u.cfgte64->lun))) {
1246 return 1;
1247 }
1248 } else {
1249 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1250 res->target == cfgtew->u.cfgte->res_addr.target &&
1251 res->lun == cfgtew->u.cfgte->res_addr.lun)
1252 return 1;
1253 }
1254
1255 return 0;
1256 }
1257
1258 /**
1259 * __ipr_format_res_path - Format the resource path for printing.
1260 * @res_path: resource path
1261 * @buf: buffer
1262 * @len: length of buffer provided
1263 *
1264 * Return value:
1265 * pointer to buffer
1266 **/
1267 static char *__ipr_format_res_path(u8 *res_path, char *buffer, int len)
1268 {
1269 int i;
1270 char *p = buffer;
1271
1272 *p = '\0';
1273 p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1274 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1275 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1276
1277 return buffer;
1278 }
1279
1280 /**
1281 * ipr_format_res_path - Format the resource path for printing.
1282 * @ioa_cfg: ioa config struct
1283 * @res_path: resource path
1284 * @buf: buffer
1285 * @len: length of buffer provided
1286 *
1287 * Return value:
1288 * pointer to buffer
1289 **/
1290 static char *ipr_format_res_path(struct ipr_ioa_cfg *ioa_cfg,
1291 u8 *res_path, char *buffer, int len)
1292 {
1293 char *p = buffer;
1294
1295 *p = '\0';
1296 p += snprintf(p, buffer + len - p, "%d/", ioa_cfg->host->host_no);
1297 __ipr_format_res_path(res_path, p, len - (buffer - p));
1298 return buffer;
1299 }
1300
1301 /**
1302 * ipr_update_res_entry - Update the resource entry.
1303 * @res: resource entry struct
1304 * @cfgtew: config table entry wrapper struct
1305 *
1306 * Return value:
1307 * none
1308 **/
1309 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1310 struct ipr_config_table_entry_wrapper *cfgtew)
1311 {
1312 char buffer[IPR_MAX_RES_PATH_LENGTH];
1313 unsigned int proto;
1314 int new_path = 0;
1315
1316 if (res->ioa_cfg->sis64) {
1317 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1318 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1319 res->type = cfgtew->u.cfgte64->res_type;
1320
1321 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1322 sizeof(struct ipr_std_inq_data));
1323
1324 res->qmodel = IPR_QUEUEING_MODEL64(res);
1325 proto = cfgtew->u.cfgte64->proto;
1326 res->res_handle = cfgtew->u.cfgte64->res_handle;
1327 res->dev_id = cfgtew->u.cfgte64->dev_id;
1328
1329 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1330 sizeof(res->dev_lun.scsi_lun));
1331
1332 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1333 sizeof(res->res_path))) {
1334 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1335 sizeof(res->res_path));
1336 new_path = 1;
1337 }
1338
1339 if (res->sdev && new_path)
1340 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1341 ipr_format_res_path(res->ioa_cfg,
1342 res->res_path, buffer, sizeof(buffer)));
1343 } else {
1344 res->flags = cfgtew->u.cfgte->flags;
1345 if (res->flags & IPR_IS_IOA_RESOURCE)
1346 res->type = IPR_RES_TYPE_IOAFP;
1347 else
1348 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1349
1350 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1351 sizeof(struct ipr_std_inq_data));
1352
1353 res->qmodel = IPR_QUEUEING_MODEL(res);
1354 proto = cfgtew->u.cfgte->proto;
1355 res->res_handle = cfgtew->u.cfgte->res_handle;
1356 }
1357
1358 ipr_update_ata_class(res, proto);
1359 }
1360
1361 /**
1362 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1363 * for the resource.
1364 * @res: resource entry struct
1365 * @cfgtew: config table entry wrapper struct
1366 *
1367 * Return value:
1368 * none
1369 **/
1370 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1371 {
1372 struct ipr_resource_entry *gscsi_res = NULL;
1373 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1374
1375 if (!ioa_cfg->sis64)
1376 return;
1377
1378 if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1379 clear_bit(res->target, ioa_cfg->array_ids);
1380 else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1381 clear_bit(res->target, ioa_cfg->vset_ids);
1382 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1383 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1384 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1385 return;
1386 clear_bit(res->target, ioa_cfg->target_ids);
1387
1388 } else if (res->bus == 0)
1389 clear_bit(res->target, ioa_cfg->target_ids);
1390 }
1391
1392 /**
1393 * ipr_handle_config_change - Handle a config change from the adapter
1394 * @ioa_cfg: ioa config struct
1395 * @hostrcb: hostrcb
1396 *
1397 * Return value:
1398 * none
1399 **/
1400 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1401 struct ipr_hostrcb *hostrcb)
1402 {
1403 struct ipr_resource_entry *res = NULL;
1404 struct ipr_config_table_entry_wrapper cfgtew;
1405 __be32 cc_res_handle;
1406
1407 u32 is_ndn = 1;
1408
1409 if (ioa_cfg->sis64) {
1410 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1411 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1412 } else {
1413 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1414 cc_res_handle = cfgtew.u.cfgte->res_handle;
1415 }
1416
1417 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1418 if (res->res_handle == cc_res_handle) {
1419 is_ndn = 0;
1420 break;
1421 }
1422 }
1423
1424 if (is_ndn) {
1425 if (list_empty(&ioa_cfg->free_res_q)) {
1426 ipr_send_hcam(ioa_cfg,
1427 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1428 hostrcb);
1429 return;
1430 }
1431
1432 res = list_entry(ioa_cfg->free_res_q.next,
1433 struct ipr_resource_entry, queue);
1434
1435 list_del(&res->queue);
1436 ipr_init_res_entry(res, &cfgtew);
1437 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1438 }
1439
1440 ipr_update_res_entry(res, &cfgtew);
1441
1442 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1443 if (res->sdev) {
1444 res->del_from_ml = 1;
1445 res->res_handle = IPR_INVALID_RES_HANDLE;
1446 schedule_work(&ioa_cfg->work_q);
1447 } else {
1448 ipr_clear_res_target(res);
1449 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1450 }
1451 } else if (!res->sdev || res->del_from_ml) {
1452 res->add_to_ml = 1;
1453 schedule_work(&ioa_cfg->work_q);
1454 }
1455
1456 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1457 }
1458
1459 /**
1460 * ipr_process_ccn - Op done function for a CCN.
1461 * @ipr_cmd: ipr command struct
1462 *
1463 * This function is the op done function for a configuration
1464 * change notification host controlled async from the adapter.
1465 *
1466 * Return value:
1467 * none
1468 **/
1469 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1470 {
1471 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1472 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1473 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1474
1475 list_del(&hostrcb->queue);
1476 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
1477
1478 if (ioasc) {
1479 if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
1480 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST)
1481 dev_err(&ioa_cfg->pdev->dev,
1482 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1483
1484 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1485 } else {
1486 ipr_handle_config_change(ioa_cfg, hostrcb);
1487 }
1488 }
1489
1490 /**
1491 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1492 * @i: index into buffer
1493 * @buf: string to modify
1494 *
1495 * This function will strip all trailing whitespace, pad the end
1496 * of the string with a single space, and NULL terminate the string.
1497 *
1498 * Return value:
1499 * new length of string
1500 **/
1501 static int strip_and_pad_whitespace(int i, char *buf)
1502 {
1503 while (i && buf[i] == ' ')
1504 i--;
1505 buf[i+1] = ' ';
1506 buf[i+2] = '\0';
1507 return i + 2;
1508 }
1509
1510 /**
1511 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1512 * @prefix: string to print at start of printk
1513 * @hostrcb: hostrcb pointer
1514 * @vpd: vendor/product id/sn struct
1515 *
1516 * Return value:
1517 * none
1518 **/
1519 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1520 struct ipr_vpd *vpd)
1521 {
1522 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1523 int i = 0;
1524
1525 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1526 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1527
1528 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1529 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1530
1531 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1532 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1533
1534 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1535 }
1536
1537 /**
1538 * ipr_log_vpd - Log the passed VPD to the error log.
1539 * @vpd: vendor/product id/sn struct
1540 *
1541 * Return value:
1542 * none
1543 **/
1544 static void ipr_log_vpd(struct ipr_vpd *vpd)
1545 {
1546 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1547 + IPR_SERIAL_NUM_LEN];
1548
1549 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1550 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1551 IPR_PROD_ID_LEN);
1552 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1553 ipr_err("Vendor/Product ID: %s\n", buffer);
1554
1555 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1556 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1557 ipr_err(" Serial Number: %s\n", buffer);
1558 }
1559
1560 /**
1561 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1562 * @prefix: string to print at start of printk
1563 * @hostrcb: hostrcb pointer
1564 * @vpd: vendor/product id/sn/wwn struct
1565 *
1566 * Return value:
1567 * none
1568 **/
1569 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1570 struct ipr_ext_vpd *vpd)
1571 {
1572 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1573 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1574 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1575 }
1576
1577 /**
1578 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1579 * @vpd: vendor/product id/sn/wwn struct
1580 *
1581 * Return value:
1582 * none
1583 **/
1584 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1585 {
1586 ipr_log_vpd(&vpd->vpd);
1587 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1588 be32_to_cpu(vpd->wwid[1]));
1589 }
1590
1591 /**
1592 * ipr_log_enhanced_cache_error - Log a cache error.
1593 * @ioa_cfg: ioa config struct
1594 * @hostrcb: hostrcb struct
1595 *
1596 * Return value:
1597 * none
1598 **/
1599 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1600 struct ipr_hostrcb *hostrcb)
1601 {
1602 struct ipr_hostrcb_type_12_error *error;
1603
1604 if (ioa_cfg->sis64)
1605 error = &hostrcb->hcam.u.error64.u.type_12_error;
1606 else
1607 error = &hostrcb->hcam.u.error.u.type_12_error;
1608
1609 ipr_err("-----Current Configuration-----\n");
1610 ipr_err("Cache Directory Card Information:\n");
1611 ipr_log_ext_vpd(&error->ioa_vpd);
1612 ipr_err("Adapter Card Information:\n");
1613 ipr_log_ext_vpd(&error->cfc_vpd);
1614
1615 ipr_err("-----Expected Configuration-----\n");
1616 ipr_err("Cache Directory Card Information:\n");
1617 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1618 ipr_err("Adapter Card Information:\n");
1619 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1620
1621 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1622 be32_to_cpu(error->ioa_data[0]),
1623 be32_to_cpu(error->ioa_data[1]),
1624 be32_to_cpu(error->ioa_data[2]));
1625 }
1626
1627 /**
1628 * ipr_log_cache_error - Log a cache error.
1629 * @ioa_cfg: ioa config struct
1630 * @hostrcb: hostrcb struct
1631 *
1632 * Return value:
1633 * none
1634 **/
1635 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1636 struct ipr_hostrcb *hostrcb)
1637 {
1638 struct ipr_hostrcb_type_02_error *error =
1639 &hostrcb->hcam.u.error.u.type_02_error;
1640
1641 ipr_err("-----Current Configuration-----\n");
1642 ipr_err("Cache Directory Card Information:\n");
1643 ipr_log_vpd(&error->ioa_vpd);
1644 ipr_err("Adapter Card Information:\n");
1645 ipr_log_vpd(&error->cfc_vpd);
1646
1647 ipr_err("-----Expected Configuration-----\n");
1648 ipr_err("Cache Directory Card Information:\n");
1649 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1650 ipr_err("Adapter Card Information:\n");
1651 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1652
1653 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1654 be32_to_cpu(error->ioa_data[0]),
1655 be32_to_cpu(error->ioa_data[1]),
1656 be32_to_cpu(error->ioa_data[2]));
1657 }
1658
1659 /**
1660 * ipr_log_enhanced_config_error - Log a configuration error.
1661 * @ioa_cfg: ioa config struct
1662 * @hostrcb: hostrcb struct
1663 *
1664 * Return value:
1665 * none
1666 **/
1667 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1668 struct ipr_hostrcb *hostrcb)
1669 {
1670 int errors_logged, i;
1671 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1672 struct ipr_hostrcb_type_13_error *error;
1673
1674 error = &hostrcb->hcam.u.error.u.type_13_error;
1675 errors_logged = be32_to_cpu(error->errors_logged);
1676
1677 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1678 be32_to_cpu(error->errors_detected), errors_logged);
1679
1680 dev_entry = error->dev;
1681
1682 for (i = 0; i < errors_logged; i++, dev_entry++) {
1683 ipr_err_separator;
1684
1685 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1686 ipr_log_ext_vpd(&dev_entry->vpd);
1687
1688 ipr_err("-----New Device Information-----\n");
1689 ipr_log_ext_vpd(&dev_entry->new_vpd);
1690
1691 ipr_err("Cache Directory Card Information:\n");
1692 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1693
1694 ipr_err("Adapter Card Information:\n");
1695 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1696 }
1697 }
1698
1699 /**
1700 * ipr_log_sis64_config_error - Log a device error.
1701 * @ioa_cfg: ioa config struct
1702 * @hostrcb: hostrcb struct
1703 *
1704 * Return value:
1705 * none
1706 **/
1707 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1708 struct ipr_hostrcb *hostrcb)
1709 {
1710 int errors_logged, i;
1711 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1712 struct ipr_hostrcb_type_23_error *error;
1713 char buffer[IPR_MAX_RES_PATH_LENGTH];
1714
1715 error = &hostrcb->hcam.u.error64.u.type_23_error;
1716 errors_logged = be32_to_cpu(error->errors_logged);
1717
1718 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1719 be32_to_cpu(error->errors_detected), errors_logged);
1720
1721 dev_entry = error->dev;
1722
1723 for (i = 0; i < errors_logged; i++, dev_entry++) {
1724 ipr_err_separator;
1725
1726 ipr_err("Device %d : %s", i + 1,
1727 __ipr_format_res_path(dev_entry->res_path,
1728 buffer, sizeof(buffer)));
1729 ipr_log_ext_vpd(&dev_entry->vpd);
1730
1731 ipr_err("-----New Device Information-----\n");
1732 ipr_log_ext_vpd(&dev_entry->new_vpd);
1733
1734 ipr_err("Cache Directory Card Information:\n");
1735 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1736
1737 ipr_err("Adapter Card Information:\n");
1738 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1739 }
1740 }
1741
1742 /**
1743 * ipr_log_config_error - Log a configuration error.
1744 * @ioa_cfg: ioa config struct
1745 * @hostrcb: hostrcb struct
1746 *
1747 * Return value:
1748 * none
1749 **/
1750 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1751 struct ipr_hostrcb *hostrcb)
1752 {
1753 int errors_logged, i;
1754 struct ipr_hostrcb_device_data_entry *dev_entry;
1755 struct ipr_hostrcb_type_03_error *error;
1756
1757 error = &hostrcb->hcam.u.error.u.type_03_error;
1758 errors_logged = be32_to_cpu(error->errors_logged);
1759
1760 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1761 be32_to_cpu(error->errors_detected), errors_logged);
1762
1763 dev_entry = error->dev;
1764
1765 for (i = 0; i < errors_logged; i++, dev_entry++) {
1766 ipr_err_separator;
1767
1768 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1769 ipr_log_vpd(&dev_entry->vpd);
1770
1771 ipr_err("-----New Device Information-----\n");
1772 ipr_log_vpd(&dev_entry->new_vpd);
1773
1774 ipr_err("Cache Directory Card Information:\n");
1775 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1776
1777 ipr_err("Adapter Card Information:\n");
1778 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1779
1780 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1781 be32_to_cpu(dev_entry->ioa_data[0]),
1782 be32_to_cpu(dev_entry->ioa_data[1]),
1783 be32_to_cpu(dev_entry->ioa_data[2]),
1784 be32_to_cpu(dev_entry->ioa_data[3]),
1785 be32_to_cpu(dev_entry->ioa_data[4]));
1786 }
1787 }
1788
1789 /**
1790 * ipr_log_enhanced_array_error - Log an array configuration error.
1791 * @ioa_cfg: ioa config struct
1792 * @hostrcb: hostrcb struct
1793 *
1794 * Return value:
1795 * none
1796 **/
1797 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1798 struct ipr_hostrcb *hostrcb)
1799 {
1800 int i, num_entries;
1801 struct ipr_hostrcb_type_14_error *error;
1802 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1803 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1804
1805 error = &hostrcb->hcam.u.error.u.type_14_error;
1806
1807 ipr_err_separator;
1808
1809 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1810 error->protection_level,
1811 ioa_cfg->host->host_no,
1812 error->last_func_vset_res_addr.bus,
1813 error->last_func_vset_res_addr.target,
1814 error->last_func_vset_res_addr.lun);
1815
1816 ipr_err_separator;
1817
1818 array_entry = error->array_member;
1819 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1820 ARRAY_SIZE(error->array_member));
1821
1822 for (i = 0; i < num_entries; i++, array_entry++) {
1823 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1824 continue;
1825
1826 if (be32_to_cpu(error->exposed_mode_adn) == i)
1827 ipr_err("Exposed Array Member %d:\n", i);
1828 else
1829 ipr_err("Array Member %d:\n", i);
1830
1831 ipr_log_ext_vpd(&array_entry->vpd);
1832 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1833 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1834 "Expected Location");
1835
1836 ipr_err_separator;
1837 }
1838 }
1839
1840 /**
1841 * ipr_log_array_error - Log an array configuration error.
1842 * @ioa_cfg: ioa config struct
1843 * @hostrcb: hostrcb struct
1844 *
1845 * Return value:
1846 * none
1847 **/
1848 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1849 struct ipr_hostrcb *hostrcb)
1850 {
1851 int i;
1852 struct ipr_hostrcb_type_04_error *error;
1853 struct ipr_hostrcb_array_data_entry *array_entry;
1854 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1855
1856 error = &hostrcb->hcam.u.error.u.type_04_error;
1857
1858 ipr_err_separator;
1859
1860 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1861 error->protection_level,
1862 ioa_cfg->host->host_no,
1863 error->last_func_vset_res_addr.bus,
1864 error->last_func_vset_res_addr.target,
1865 error->last_func_vset_res_addr.lun);
1866
1867 ipr_err_separator;
1868
1869 array_entry = error->array_member;
1870
1871 for (i = 0; i < 18; i++) {
1872 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1873 continue;
1874
1875 if (be32_to_cpu(error->exposed_mode_adn) == i)
1876 ipr_err("Exposed Array Member %d:\n", i);
1877 else
1878 ipr_err("Array Member %d:\n", i);
1879
1880 ipr_log_vpd(&array_entry->vpd);
1881
1882 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1883 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1884 "Expected Location");
1885
1886 ipr_err_separator;
1887
1888 if (i == 9)
1889 array_entry = error->array_member2;
1890 else
1891 array_entry++;
1892 }
1893 }
1894
1895 /**
1896 * ipr_log_hex_data - Log additional hex IOA error data.
1897 * @ioa_cfg: ioa config struct
1898 * @data: IOA error data
1899 * @len: data length
1900 *
1901 * Return value:
1902 * none
1903 **/
1904 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, __be32 *data, int len)
1905 {
1906 int i;
1907
1908 if (len == 0)
1909 return;
1910
1911 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1912 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1913
1914 for (i = 0; i < len / 4; i += 4) {
1915 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1916 be32_to_cpu(data[i]),
1917 be32_to_cpu(data[i+1]),
1918 be32_to_cpu(data[i+2]),
1919 be32_to_cpu(data[i+3]));
1920 }
1921 }
1922
1923 /**
1924 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1925 * @ioa_cfg: ioa config struct
1926 * @hostrcb: hostrcb struct
1927 *
1928 * Return value:
1929 * none
1930 **/
1931 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1932 struct ipr_hostrcb *hostrcb)
1933 {
1934 struct ipr_hostrcb_type_17_error *error;
1935
1936 if (ioa_cfg->sis64)
1937 error = &hostrcb->hcam.u.error64.u.type_17_error;
1938 else
1939 error = &hostrcb->hcam.u.error.u.type_17_error;
1940
1941 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1942 strim(error->failure_reason);
1943
1944 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1945 be32_to_cpu(hostrcb->hcam.u.error.prc));
1946 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1947 ipr_log_hex_data(ioa_cfg, error->data,
1948 be32_to_cpu(hostrcb->hcam.length) -
1949 (offsetof(struct ipr_hostrcb_error, u) +
1950 offsetof(struct ipr_hostrcb_type_17_error, data)));
1951 }
1952
1953 /**
1954 * ipr_log_dual_ioa_error - Log a dual adapter error.
1955 * @ioa_cfg: ioa config struct
1956 * @hostrcb: hostrcb struct
1957 *
1958 * Return value:
1959 * none
1960 **/
1961 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1962 struct ipr_hostrcb *hostrcb)
1963 {
1964 struct ipr_hostrcb_type_07_error *error;
1965
1966 error = &hostrcb->hcam.u.error.u.type_07_error;
1967 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1968 strim(error->failure_reason);
1969
1970 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1971 be32_to_cpu(hostrcb->hcam.u.error.prc));
1972 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1973 ipr_log_hex_data(ioa_cfg, error->data,
1974 be32_to_cpu(hostrcb->hcam.length) -
1975 (offsetof(struct ipr_hostrcb_error, u) +
1976 offsetof(struct ipr_hostrcb_type_07_error, data)));
1977 }
1978
1979 static const struct {
1980 u8 active;
1981 char *desc;
1982 } path_active_desc[] = {
1983 { IPR_PATH_NO_INFO, "Path" },
1984 { IPR_PATH_ACTIVE, "Active path" },
1985 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1986 };
1987
1988 static const struct {
1989 u8 state;
1990 char *desc;
1991 } path_state_desc[] = {
1992 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1993 { IPR_PATH_HEALTHY, "is healthy" },
1994 { IPR_PATH_DEGRADED, "is degraded" },
1995 { IPR_PATH_FAILED, "is failed" }
1996 };
1997
1998 /**
1999 * ipr_log_fabric_path - Log a fabric path error
2000 * @hostrcb: hostrcb struct
2001 * @fabric: fabric descriptor
2002 *
2003 * Return value:
2004 * none
2005 **/
2006 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
2007 struct ipr_hostrcb_fabric_desc *fabric)
2008 {
2009 int i, j;
2010 u8 path_state = fabric->path_state;
2011 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2012 u8 state = path_state & IPR_PATH_STATE_MASK;
2013
2014 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2015 if (path_active_desc[i].active != active)
2016 continue;
2017
2018 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2019 if (path_state_desc[j].state != state)
2020 continue;
2021
2022 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
2023 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
2024 path_active_desc[i].desc, path_state_desc[j].desc,
2025 fabric->ioa_port);
2026 } else if (fabric->cascaded_expander == 0xff) {
2027 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
2028 path_active_desc[i].desc, path_state_desc[j].desc,
2029 fabric->ioa_port, fabric->phy);
2030 } else if (fabric->phy == 0xff) {
2031 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
2032 path_active_desc[i].desc, path_state_desc[j].desc,
2033 fabric->ioa_port, fabric->cascaded_expander);
2034 } else {
2035 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
2036 path_active_desc[i].desc, path_state_desc[j].desc,
2037 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2038 }
2039 return;
2040 }
2041 }
2042
2043 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
2044 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2045 }
2046
2047 /**
2048 * ipr_log64_fabric_path - Log a fabric path error
2049 * @hostrcb: hostrcb struct
2050 * @fabric: fabric descriptor
2051 *
2052 * Return value:
2053 * none
2054 **/
2055 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
2056 struct ipr_hostrcb64_fabric_desc *fabric)
2057 {
2058 int i, j;
2059 u8 path_state = fabric->path_state;
2060 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2061 u8 state = path_state & IPR_PATH_STATE_MASK;
2062 char buffer[IPR_MAX_RES_PATH_LENGTH];
2063
2064 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2065 if (path_active_desc[i].active != active)
2066 continue;
2067
2068 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2069 if (path_state_desc[j].state != state)
2070 continue;
2071
2072 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
2073 path_active_desc[i].desc, path_state_desc[j].desc,
2074 ipr_format_res_path(hostrcb->ioa_cfg,
2075 fabric->res_path,
2076 buffer, sizeof(buffer)));
2077 return;
2078 }
2079 }
2080
2081 ipr_err("Path state=%02X Resource Path=%s\n", path_state,
2082 ipr_format_res_path(hostrcb->ioa_cfg, fabric->res_path,
2083 buffer, sizeof(buffer)));
2084 }
2085
2086 static const struct {
2087 u8 type;
2088 char *desc;
2089 } path_type_desc[] = {
2090 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
2091 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
2092 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
2093 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
2094 };
2095
2096 static const struct {
2097 u8 status;
2098 char *desc;
2099 } path_status_desc[] = {
2100 { IPR_PATH_CFG_NO_PROB, "Functional" },
2101 { IPR_PATH_CFG_DEGRADED, "Degraded" },
2102 { IPR_PATH_CFG_FAILED, "Failed" },
2103 { IPR_PATH_CFG_SUSPECT, "Suspect" },
2104 { IPR_PATH_NOT_DETECTED, "Missing" },
2105 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
2106 };
2107
2108 static const char *link_rate[] = {
2109 "unknown",
2110 "disabled",
2111 "phy reset problem",
2112 "spinup hold",
2113 "port selector",
2114 "unknown",
2115 "unknown",
2116 "unknown",
2117 "1.5Gbps",
2118 "3.0Gbps",
2119 "unknown",
2120 "unknown",
2121 "unknown",
2122 "unknown",
2123 "unknown",
2124 "unknown"
2125 };
2126
2127 /**
2128 * ipr_log_path_elem - Log a fabric path element.
2129 * @hostrcb: hostrcb struct
2130 * @cfg: fabric path element struct
2131 *
2132 * Return value:
2133 * none
2134 **/
2135 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
2136 struct ipr_hostrcb_config_element *cfg)
2137 {
2138 int i, j;
2139 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2140 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2141
2142 if (type == IPR_PATH_CFG_NOT_EXIST)
2143 return;
2144
2145 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2146 if (path_type_desc[i].type != type)
2147 continue;
2148
2149 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2150 if (path_status_desc[j].status != status)
2151 continue;
2152
2153 if (type == IPR_PATH_CFG_IOA_PORT) {
2154 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2155 path_status_desc[j].desc, path_type_desc[i].desc,
2156 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2157 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2158 } else {
2159 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2160 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2161 path_status_desc[j].desc, path_type_desc[i].desc,
2162 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2163 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2164 } else if (cfg->cascaded_expander == 0xff) {
2165 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2166 "WWN=%08X%08X\n", path_status_desc[j].desc,
2167 path_type_desc[i].desc, cfg->phy,
2168 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2169 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2170 } else if (cfg->phy == 0xff) {
2171 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2172 "WWN=%08X%08X\n", path_status_desc[j].desc,
2173 path_type_desc[i].desc, cfg->cascaded_expander,
2174 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2175 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2176 } else {
2177 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2178 "WWN=%08X%08X\n", path_status_desc[j].desc,
2179 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2180 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2181 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2182 }
2183 }
2184 return;
2185 }
2186 }
2187
2188 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2189 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2190 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2191 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2192 }
2193
2194 /**
2195 * ipr_log64_path_elem - Log a fabric path element.
2196 * @hostrcb: hostrcb struct
2197 * @cfg: fabric path element struct
2198 *
2199 * Return value:
2200 * none
2201 **/
2202 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2203 struct ipr_hostrcb64_config_element *cfg)
2204 {
2205 int i, j;
2206 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2207 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2208 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2209 char buffer[IPR_MAX_RES_PATH_LENGTH];
2210
2211 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2212 return;
2213
2214 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2215 if (path_type_desc[i].type != type)
2216 continue;
2217
2218 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2219 if (path_status_desc[j].status != status)
2220 continue;
2221
2222 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2223 path_status_desc[j].desc, path_type_desc[i].desc,
2224 ipr_format_res_path(hostrcb->ioa_cfg,
2225 cfg->res_path, buffer, sizeof(buffer)),
2226 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2227 be32_to_cpu(cfg->wwid[0]),
2228 be32_to_cpu(cfg->wwid[1]));
2229 return;
2230 }
2231 }
2232 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2233 "WWN=%08X%08X\n", cfg->type_status,
2234 ipr_format_res_path(hostrcb->ioa_cfg,
2235 cfg->res_path, buffer, sizeof(buffer)),
2236 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2237 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2238 }
2239
2240 /**
2241 * ipr_log_fabric_error - Log a fabric error.
2242 * @ioa_cfg: ioa config struct
2243 * @hostrcb: hostrcb struct
2244 *
2245 * Return value:
2246 * none
2247 **/
2248 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2249 struct ipr_hostrcb *hostrcb)
2250 {
2251 struct ipr_hostrcb_type_20_error *error;
2252 struct ipr_hostrcb_fabric_desc *fabric;
2253 struct ipr_hostrcb_config_element *cfg;
2254 int i, add_len;
2255
2256 error = &hostrcb->hcam.u.error.u.type_20_error;
2257 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2258 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2259
2260 add_len = be32_to_cpu(hostrcb->hcam.length) -
2261 (offsetof(struct ipr_hostrcb_error, u) +
2262 offsetof(struct ipr_hostrcb_type_20_error, desc));
2263
2264 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2265 ipr_log_fabric_path(hostrcb, fabric);
2266 for_each_fabric_cfg(fabric, cfg)
2267 ipr_log_path_elem(hostrcb, cfg);
2268
2269 add_len -= be16_to_cpu(fabric->length);
2270 fabric = (struct ipr_hostrcb_fabric_desc *)
2271 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2272 }
2273
2274 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2275 }
2276
2277 /**
2278 * ipr_log_sis64_array_error - Log a sis64 array error.
2279 * @ioa_cfg: ioa config struct
2280 * @hostrcb: hostrcb struct
2281 *
2282 * Return value:
2283 * none
2284 **/
2285 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2286 struct ipr_hostrcb *hostrcb)
2287 {
2288 int i, num_entries;
2289 struct ipr_hostrcb_type_24_error *error;
2290 struct ipr_hostrcb64_array_data_entry *array_entry;
2291 char buffer[IPR_MAX_RES_PATH_LENGTH];
2292 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2293
2294 error = &hostrcb->hcam.u.error64.u.type_24_error;
2295
2296 ipr_err_separator;
2297
2298 ipr_err("RAID %s Array Configuration: %s\n",
2299 error->protection_level,
2300 ipr_format_res_path(ioa_cfg, error->last_res_path,
2301 buffer, sizeof(buffer)));
2302
2303 ipr_err_separator;
2304
2305 array_entry = error->array_member;
2306 num_entries = min_t(u32, error->num_entries,
2307 ARRAY_SIZE(error->array_member));
2308
2309 for (i = 0; i < num_entries; i++, array_entry++) {
2310
2311 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2312 continue;
2313
2314 if (error->exposed_mode_adn == i)
2315 ipr_err("Exposed Array Member %d:\n", i);
2316 else
2317 ipr_err("Array Member %d:\n", i);
2318
2319 ipr_err("Array Member %d:\n", i);
2320 ipr_log_ext_vpd(&array_entry->vpd);
2321 ipr_err("Current Location: %s\n",
2322 ipr_format_res_path(ioa_cfg, array_entry->res_path,
2323 buffer, sizeof(buffer)));
2324 ipr_err("Expected Location: %s\n",
2325 ipr_format_res_path(ioa_cfg,
2326 array_entry->expected_res_path,
2327 buffer, sizeof(buffer)));
2328
2329 ipr_err_separator;
2330 }
2331 }
2332
2333 /**
2334 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2335 * @ioa_cfg: ioa config struct
2336 * @hostrcb: hostrcb struct
2337 *
2338 * Return value:
2339 * none
2340 **/
2341 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2342 struct ipr_hostrcb *hostrcb)
2343 {
2344 struct ipr_hostrcb_type_30_error *error;
2345 struct ipr_hostrcb64_fabric_desc *fabric;
2346 struct ipr_hostrcb64_config_element *cfg;
2347 int i, add_len;
2348
2349 error = &hostrcb->hcam.u.error64.u.type_30_error;
2350
2351 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2352 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2353
2354 add_len = be32_to_cpu(hostrcb->hcam.length) -
2355 (offsetof(struct ipr_hostrcb64_error, u) +
2356 offsetof(struct ipr_hostrcb_type_30_error, desc));
2357
2358 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2359 ipr_log64_fabric_path(hostrcb, fabric);
2360 for_each_fabric_cfg(fabric, cfg)
2361 ipr_log64_path_elem(hostrcb, cfg);
2362
2363 add_len -= be16_to_cpu(fabric->length);
2364 fabric = (struct ipr_hostrcb64_fabric_desc *)
2365 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2366 }
2367
2368 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2369 }
2370
2371 /**
2372 * ipr_log_generic_error - Log an adapter error.
2373 * @ioa_cfg: ioa config struct
2374 * @hostrcb: hostrcb struct
2375 *
2376 * Return value:
2377 * none
2378 **/
2379 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2380 struct ipr_hostrcb *hostrcb)
2381 {
2382 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2383 be32_to_cpu(hostrcb->hcam.length));
2384 }
2385
2386 /**
2387 * ipr_log_sis64_device_error - Log a cache error.
2388 * @ioa_cfg: ioa config struct
2389 * @hostrcb: hostrcb struct
2390 *
2391 * Return value:
2392 * none
2393 **/
2394 static void ipr_log_sis64_device_error(struct ipr_ioa_cfg *ioa_cfg,
2395 struct ipr_hostrcb *hostrcb)
2396 {
2397 struct ipr_hostrcb_type_21_error *error;
2398 char buffer[IPR_MAX_RES_PATH_LENGTH];
2399
2400 error = &hostrcb->hcam.u.error64.u.type_21_error;
2401
2402 ipr_err("-----Failing Device Information-----\n");
2403 ipr_err("World Wide Unique ID: %08X%08X%08X%08X\n",
2404 be32_to_cpu(error->wwn[0]), be32_to_cpu(error->wwn[1]),
2405 be32_to_cpu(error->wwn[2]), be32_to_cpu(error->wwn[3]));
2406 ipr_err("Device Resource Path: %s\n",
2407 __ipr_format_res_path(error->res_path,
2408 buffer, sizeof(buffer)));
2409 error->primary_problem_desc[sizeof(error->primary_problem_desc) - 1] = '\0';
2410 error->second_problem_desc[sizeof(error->second_problem_desc) - 1] = '\0';
2411 ipr_err("Primary Problem Description: %s\n", error->primary_problem_desc);
2412 ipr_err("Secondary Problem Description: %s\n", error->second_problem_desc);
2413 ipr_err("SCSI Sense Data:\n");
2414 ipr_log_hex_data(ioa_cfg, error->sense_data, sizeof(error->sense_data));
2415 ipr_err("SCSI Command Descriptor Block: \n");
2416 ipr_log_hex_data(ioa_cfg, error->cdb, sizeof(error->cdb));
2417
2418 ipr_err("Additional IOA Data:\n");
2419 ipr_log_hex_data(ioa_cfg, error->ioa_data, be32_to_cpu(error->length_of_error));
2420 }
2421
2422 /**
2423 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2424 * @ioasc: IOASC
2425 *
2426 * This function will return the index of into the ipr_error_table
2427 * for the specified IOASC. If the IOASC is not in the table,
2428 * 0 will be returned, which points to the entry used for unknown errors.
2429 *
2430 * Return value:
2431 * index into the ipr_error_table
2432 **/
2433 static u32 ipr_get_error(u32 ioasc)
2434 {
2435 int i;
2436
2437 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2438 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2439 return i;
2440
2441 return 0;
2442 }
2443
2444 /**
2445 * ipr_handle_log_data - Log an adapter error.
2446 * @ioa_cfg: ioa config struct
2447 * @hostrcb: hostrcb struct
2448 *
2449 * This function logs an adapter error to the system.
2450 *
2451 * Return value:
2452 * none
2453 **/
2454 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2455 struct ipr_hostrcb *hostrcb)
2456 {
2457 u32 ioasc;
2458 int error_index;
2459 struct ipr_hostrcb_type_21_error *error;
2460
2461 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2462 return;
2463
2464 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2465 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2466
2467 if (ioa_cfg->sis64)
2468 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2469 else
2470 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2471
2472 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2473 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2474 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2475 scsi_report_bus_reset(ioa_cfg->host,
2476 hostrcb->hcam.u.error.fd_res_addr.bus);
2477 }
2478
2479 error_index = ipr_get_error(ioasc);
2480
2481 if (!ipr_error_table[error_index].log_hcam)
2482 return;
2483
2484 if (ioasc == IPR_IOASC_HW_CMD_FAILED &&
2485 hostrcb->hcam.overlay_id == IPR_HOST_RCB_OVERLAY_ID_21) {
2486 error = &hostrcb->hcam.u.error64.u.type_21_error;
2487
2488 if (((be32_to_cpu(error->sense_data[0]) & 0x0000ff00) >> 8) == ILLEGAL_REQUEST &&
2489 ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
2490 return;
2491 }
2492
2493 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2494
2495 /* Set indication we have logged an error */
2496 ioa_cfg->errors_logged++;
2497
2498 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2499 return;
2500 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2501 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2502
2503 switch (hostrcb->hcam.overlay_id) {
2504 case IPR_HOST_RCB_OVERLAY_ID_2:
2505 ipr_log_cache_error(ioa_cfg, hostrcb);
2506 break;
2507 case IPR_HOST_RCB_OVERLAY_ID_3:
2508 ipr_log_config_error(ioa_cfg, hostrcb);
2509 break;
2510 case IPR_HOST_RCB_OVERLAY_ID_4:
2511 case IPR_HOST_RCB_OVERLAY_ID_6:
2512 ipr_log_array_error(ioa_cfg, hostrcb);
2513 break;
2514 case IPR_HOST_RCB_OVERLAY_ID_7:
2515 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2516 break;
2517 case IPR_HOST_RCB_OVERLAY_ID_12:
2518 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2519 break;
2520 case IPR_HOST_RCB_OVERLAY_ID_13:
2521 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2522 break;
2523 case IPR_HOST_RCB_OVERLAY_ID_14:
2524 case IPR_HOST_RCB_OVERLAY_ID_16:
2525 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2526 break;
2527 case IPR_HOST_RCB_OVERLAY_ID_17:
2528 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2529 break;
2530 case IPR_HOST_RCB_OVERLAY_ID_20:
2531 ipr_log_fabric_error(ioa_cfg, hostrcb);
2532 break;
2533 case IPR_HOST_RCB_OVERLAY_ID_21:
2534 ipr_log_sis64_device_error(ioa_cfg, hostrcb);
2535 break;
2536 case IPR_HOST_RCB_OVERLAY_ID_23:
2537 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2538 break;
2539 case IPR_HOST_RCB_OVERLAY_ID_24:
2540 case IPR_HOST_RCB_OVERLAY_ID_26:
2541 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2542 break;
2543 case IPR_HOST_RCB_OVERLAY_ID_30:
2544 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2545 break;
2546 case IPR_HOST_RCB_OVERLAY_ID_1:
2547 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2548 default:
2549 ipr_log_generic_error(ioa_cfg, hostrcb);
2550 break;
2551 }
2552 }
2553
2554 /**
2555 * ipr_process_error - Op done function for an adapter error log.
2556 * @ipr_cmd: ipr command struct
2557 *
2558 * This function is the op done function for an error log host
2559 * controlled async from the adapter. It will log the error and
2560 * send the HCAM back to the adapter.
2561 *
2562 * Return value:
2563 * none
2564 **/
2565 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2566 {
2567 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2568 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2569 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2570 u32 fd_ioasc;
2571
2572 if (ioa_cfg->sis64)
2573 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2574 else
2575 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2576
2577 list_del(&hostrcb->queue);
2578 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
2579
2580 if (!ioasc) {
2581 ipr_handle_log_data(ioa_cfg, hostrcb);
2582 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2583 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2584 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
2585 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) {
2586 dev_err(&ioa_cfg->pdev->dev,
2587 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2588 }
2589
2590 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2591 }
2592
2593 /**
2594 * ipr_timeout - An internally generated op has timed out.
2595 * @ipr_cmd: ipr command struct
2596 *
2597 * This function blocks host requests and initiates an
2598 * adapter reset.
2599 *
2600 * Return value:
2601 * none
2602 **/
2603 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
2604 {
2605 unsigned long lock_flags = 0;
2606 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2607
2608 ENTER;
2609 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2610
2611 ioa_cfg->errors_logged++;
2612 dev_err(&ioa_cfg->pdev->dev,
2613 "Adapter being reset due to command timeout.\n");
2614
2615 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2616 ioa_cfg->sdt_state = GET_DUMP;
2617
2618 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2619 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2620
2621 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2622 LEAVE;
2623 }
2624
2625 /**
2626 * ipr_oper_timeout - Adapter timed out transitioning to operational
2627 * @ipr_cmd: ipr command struct
2628 *
2629 * This function blocks host requests and initiates an
2630 * adapter reset.
2631 *
2632 * Return value:
2633 * none
2634 **/
2635 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2636 {
2637 unsigned long lock_flags = 0;
2638 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2639
2640 ENTER;
2641 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2642
2643 ioa_cfg->errors_logged++;
2644 dev_err(&ioa_cfg->pdev->dev,
2645 "Adapter timed out transitioning to operational.\n");
2646
2647 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2648 ioa_cfg->sdt_state = GET_DUMP;
2649
2650 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2651 if (ipr_fastfail)
2652 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2653 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2654 }
2655
2656 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2657 LEAVE;
2658 }
2659
2660 /**
2661 * ipr_find_ses_entry - Find matching SES in SES table
2662 * @res: resource entry struct of SES
2663 *
2664 * Return value:
2665 * pointer to SES table entry / NULL on failure
2666 **/
2667 static const struct ipr_ses_table_entry *
2668 ipr_find_ses_entry(struct ipr_resource_entry *res)
2669 {
2670 int i, j, matches;
2671 struct ipr_std_inq_vpids *vpids;
2672 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2673
2674 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2675 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2676 if (ste->compare_product_id_byte[j] == 'X') {
2677 vpids = &res->std_inq_data.vpids;
2678 if (vpids->product_id[j] == ste->product_id[j])
2679 matches++;
2680 else
2681 break;
2682 } else
2683 matches++;
2684 }
2685
2686 if (matches == IPR_PROD_ID_LEN)
2687 return ste;
2688 }
2689
2690 return NULL;
2691 }
2692
2693 /**
2694 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2695 * @ioa_cfg: ioa config struct
2696 * @bus: SCSI bus
2697 * @bus_width: bus width
2698 *
2699 * Return value:
2700 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2701 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2702 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2703 * max 160MHz = max 320MB/sec).
2704 **/
2705 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2706 {
2707 struct ipr_resource_entry *res;
2708 const struct ipr_ses_table_entry *ste;
2709 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2710
2711 /* Loop through each config table entry in the config table buffer */
2712 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2713 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2714 continue;
2715
2716 if (bus != res->bus)
2717 continue;
2718
2719 if (!(ste = ipr_find_ses_entry(res)))
2720 continue;
2721
2722 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2723 }
2724
2725 return max_xfer_rate;
2726 }
2727
2728 /**
2729 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2730 * @ioa_cfg: ioa config struct
2731 * @max_delay: max delay in micro-seconds to wait
2732 *
2733 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2734 *
2735 * Return value:
2736 * 0 on success / other on failure
2737 **/
2738 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2739 {
2740 volatile u32 pcii_reg;
2741 int delay = 1;
2742
2743 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2744 while (delay < max_delay) {
2745 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2746
2747 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2748 return 0;
2749
2750 /* udelay cannot be used if delay is more than a few milliseconds */
2751 if ((delay / 1000) > MAX_UDELAY_MS)
2752 mdelay(delay / 1000);
2753 else
2754 udelay(delay);
2755
2756 delay += delay;
2757 }
2758 return -EIO;
2759 }
2760
2761 /**
2762 * ipr_get_sis64_dump_data_section - Dump IOA memory
2763 * @ioa_cfg: ioa config struct
2764 * @start_addr: adapter address to dump
2765 * @dest: destination kernel buffer
2766 * @length_in_words: length to dump in 4 byte words
2767 *
2768 * Return value:
2769 * 0 on success
2770 **/
2771 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2772 u32 start_addr,
2773 __be32 *dest, u32 length_in_words)
2774 {
2775 int i;
2776
2777 for (i = 0; i < length_in_words; i++) {
2778 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2779 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2780 dest++;
2781 }
2782
2783 return 0;
2784 }
2785
2786 /**
2787 * ipr_get_ldump_data_section - Dump IOA memory
2788 * @ioa_cfg: ioa config struct
2789 * @start_addr: adapter address to dump
2790 * @dest: destination kernel buffer
2791 * @length_in_words: length to dump in 4 byte words
2792 *
2793 * Return value:
2794 * 0 on success / -EIO on failure
2795 **/
2796 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2797 u32 start_addr,
2798 __be32 *dest, u32 length_in_words)
2799 {
2800 volatile u32 temp_pcii_reg;
2801 int i, delay = 0;
2802
2803 if (ioa_cfg->sis64)
2804 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2805 dest, length_in_words);
2806
2807 /* Write IOA interrupt reg starting LDUMP state */
2808 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2809 ioa_cfg->regs.set_uproc_interrupt_reg32);
2810
2811 /* Wait for IO debug acknowledge */
2812 if (ipr_wait_iodbg_ack(ioa_cfg,
2813 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2814 dev_err(&ioa_cfg->pdev->dev,
2815 "IOA dump long data transfer timeout\n");
2816 return -EIO;
2817 }
2818
2819 /* Signal LDUMP interlocked - clear IO debug ack */
2820 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2821 ioa_cfg->regs.clr_interrupt_reg);
2822
2823 /* Write Mailbox with starting address */
2824 writel(start_addr, ioa_cfg->ioa_mailbox);
2825
2826 /* Signal address valid - clear IOA Reset alert */
2827 writel(IPR_UPROCI_RESET_ALERT,
2828 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2829
2830 for (i = 0; i < length_in_words; i++) {
2831 /* Wait for IO debug acknowledge */
2832 if (ipr_wait_iodbg_ack(ioa_cfg,
2833 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2834 dev_err(&ioa_cfg->pdev->dev,
2835 "IOA dump short data transfer timeout\n");
2836 return -EIO;
2837 }
2838
2839 /* Read data from mailbox and increment destination pointer */
2840 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2841 dest++;
2842
2843 /* For all but the last word of data, signal data received */
2844 if (i < (length_in_words - 1)) {
2845 /* Signal dump data received - Clear IO debug Ack */
2846 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2847 ioa_cfg->regs.clr_interrupt_reg);
2848 }
2849 }
2850
2851 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2852 writel(IPR_UPROCI_RESET_ALERT,
2853 ioa_cfg->regs.set_uproc_interrupt_reg32);
2854
2855 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2856 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2857
2858 /* Signal dump data received - Clear IO debug Ack */
2859 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2860 ioa_cfg->regs.clr_interrupt_reg);
2861
2862 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2863 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2864 temp_pcii_reg =
2865 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2866
2867 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2868 return 0;
2869
2870 udelay(10);
2871 delay += 10;
2872 }
2873
2874 return 0;
2875 }
2876
2877 #ifdef CONFIG_SCSI_IPR_DUMP
2878 /**
2879 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2880 * @ioa_cfg: ioa config struct
2881 * @pci_address: adapter address
2882 * @length: length of data to copy
2883 *
2884 * Copy data from PCI adapter to kernel buffer.
2885 * Note: length MUST be a 4 byte multiple
2886 * Return value:
2887 * 0 on success / other on failure
2888 **/
2889 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2890 unsigned long pci_address, u32 length)
2891 {
2892 int bytes_copied = 0;
2893 int cur_len, rc, rem_len, rem_page_len, max_dump_size;
2894 __be32 *page;
2895 unsigned long lock_flags = 0;
2896 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2897
2898 if (ioa_cfg->sis64)
2899 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2900 else
2901 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2902
2903 while (bytes_copied < length &&
2904 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
2905 if (ioa_dump->page_offset >= PAGE_SIZE ||
2906 ioa_dump->page_offset == 0) {
2907 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2908
2909 if (!page) {
2910 ipr_trace;
2911 return bytes_copied;
2912 }
2913
2914 ioa_dump->page_offset = 0;
2915 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2916 ioa_dump->next_page_index++;
2917 } else
2918 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2919
2920 rem_len = length - bytes_copied;
2921 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2922 cur_len = min(rem_len, rem_page_len);
2923
2924 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2925 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2926 rc = -EIO;
2927 } else {
2928 rc = ipr_get_ldump_data_section(ioa_cfg,
2929 pci_address + bytes_copied,
2930 &page[ioa_dump->page_offset / 4],
2931 (cur_len / sizeof(u32)));
2932 }
2933 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2934
2935 if (!rc) {
2936 ioa_dump->page_offset += cur_len;
2937 bytes_copied += cur_len;
2938 } else {
2939 ipr_trace;
2940 break;
2941 }
2942 schedule();
2943 }
2944
2945 return bytes_copied;
2946 }
2947
2948 /**
2949 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2950 * @hdr: dump entry header struct
2951 *
2952 * Return value:
2953 * nothing
2954 **/
2955 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2956 {
2957 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2958 hdr->num_elems = 1;
2959 hdr->offset = sizeof(*hdr);
2960 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2961 }
2962
2963 /**
2964 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2965 * @ioa_cfg: ioa config struct
2966 * @driver_dump: driver dump struct
2967 *
2968 * Return value:
2969 * nothing
2970 **/
2971 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2972 struct ipr_driver_dump *driver_dump)
2973 {
2974 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2975
2976 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2977 driver_dump->ioa_type_entry.hdr.len =
2978 sizeof(struct ipr_dump_ioa_type_entry) -
2979 sizeof(struct ipr_dump_entry_header);
2980 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2981 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2982 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2983 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2984 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2985 ucode_vpd->minor_release[1];
2986 driver_dump->hdr.num_entries++;
2987 }
2988
2989 /**
2990 * ipr_dump_version_data - Fill in the driver version in the dump.
2991 * @ioa_cfg: ioa config struct
2992 * @driver_dump: driver dump struct
2993 *
2994 * Return value:
2995 * nothing
2996 **/
2997 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2998 struct ipr_driver_dump *driver_dump)
2999 {
3000 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
3001 driver_dump->version_entry.hdr.len =
3002 sizeof(struct ipr_dump_version_entry) -
3003 sizeof(struct ipr_dump_entry_header);
3004 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3005 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
3006 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
3007 driver_dump->hdr.num_entries++;
3008 }
3009
3010 /**
3011 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
3012 * @ioa_cfg: ioa config struct
3013 * @driver_dump: driver dump struct
3014 *
3015 * Return value:
3016 * nothing
3017 **/
3018 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
3019 struct ipr_driver_dump *driver_dump)
3020 {
3021 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
3022 driver_dump->trace_entry.hdr.len =
3023 sizeof(struct ipr_dump_trace_entry) -
3024 sizeof(struct ipr_dump_entry_header);
3025 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3026 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
3027 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
3028 driver_dump->hdr.num_entries++;
3029 }
3030
3031 /**
3032 * ipr_dump_location_data - Fill in the IOA location in the dump.
3033 * @ioa_cfg: ioa config struct
3034 * @driver_dump: driver dump struct
3035 *
3036 * Return value:
3037 * nothing
3038 **/
3039 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
3040 struct ipr_driver_dump *driver_dump)
3041 {
3042 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
3043 driver_dump->location_entry.hdr.len =
3044 sizeof(struct ipr_dump_location_entry) -
3045 sizeof(struct ipr_dump_entry_header);
3046 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3047 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
3048 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
3049 driver_dump->hdr.num_entries++;
3050 }
3051
3052 /**
3053 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
3054 * @ioa_cfg: ioa config struct
3055 * @dump: dump struct
3056 *
3057 * Return value:
3058 * nothing
3059 **/
3060 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
3061 {
3062 unsigned long start_addr, sdt_word;
3063 unsigned long lock_flags = 0;
3064 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
3065 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
3066 u32 num_entries, max_num_entries, start_off, end_off;
3067 u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
3068 struct ipr_sdt *sdt;
3069 int valid = 1;
3070 int i;
3071
3072 ENTER;
3073
3074 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3075
3076 if (ioa_cfg->sdt_state != READ_DUMP) {
3077 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3078 return;
3079 }
3080
3081 if (ioa_cfg->sis64) {
3082 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3083 ssleep(IPR_DUMP_DELAY_SECONDS);
3084 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3085 }
3086
3087 start_addr = readl(ioa_cfg->ioa_mailbox);
3088
3089 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
3090 dev_err(&ioa_cfg->pdev->dev,
3091 "Invalid dump table format: %lx\n", start_addr);
3092 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3093 return;
3094 }
3095
3096 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
3097
3098 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
3099
3100 /* Initialize the overall dump header */
3101 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
3102 driver_dump->hdr.num_entries = 1;
3103 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
3104 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
3105 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
3106 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
3107
3108 ipr_dump_version_data(ioa_cfg, driver_dump);
3109 ipr_dump_location_data(ioa_cfg, driver_dump);
3110 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
3111 ipr_dump_trace_data(ioa_cfg, driver_dump);
3112
3113 /* Update dump_header */
3114 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
3115
3116 /* IOA Dump entry */
3117 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
3118 ioa_dump->hdr.len = 0;
3119 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3120 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
3121
3122 /* First entries in sdt are actually a list of dump addresses and
3123 lengths to gather the real dump data. sdt represents the pointer
3124 to the ioa generated dump table. Dump data will be extracted based
3125 on entries in this table */
3126 sdt = &ioa_dump->sdt;
3127
3128 if (ioa_cfg->sis64) {
3129 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
3130 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
3131 } else {
3132 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
3133 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
3134 }
3135
3136 bytes_to_copy = offsetof(struct ipr_sdt, entry) +
3137 (max_num_entries * sizeof(struct ipr_sdt_entry));
3138 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
3139 bytes_to_copy / sizeof(__be32));
3140
3141 /* Smart Dump table is ready to use and the first entry is valid */
3142 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
3143 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
3144 dev_err(&ioa_cfg->pdev->dev,
3145 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
3146 rc, be32_to_cpu(sdt->hdr.state));
3147 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
3148 ioa_cfg->sdt_state = DUMP_OBTAINED;
3149 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3150 return;
3151 }
3152
3153 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
3154
3155 if (num_entries > max_num_entries)
3156 num_entries = max_num_entries;
3157
3158 /* Update dump length to the actual data to be copied */
3159 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
3160 if (ioa_cfg->sis64)
3161 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
3162 else
3163 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
3164
3165 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3166
3167 for (i = 0; i < num_entries; i++) {
3168 if (ioa_dump->hdr.len > max_dump_size) {
3169 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3170 break;
3171 }
3172
3173 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
3174 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3175 if (ioa_cfg->sis64)
3176 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3177 else {
3178 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3179 end_off = be32_to_cpu(sdt->entry[i].end_token);
3180
3181 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3182 bytes_to_copy = end_off - start_off;
3183 else
3184 valid = 0;
3185 }
3186 if (valid) {
3187 if (bytes_to_copy > max_dump_size) {
3188 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3189 continue;
3190 }
3191
3192 /* Copy data from adapter to driver buffers */
3193 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3194 bytes_to_copy);
3195
3196 ioa_dump->hdr.len += bytes_copied;
3197
3198 if (bytes_copied != bytes_to_copy) {
3199 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3200 break;
3201 }
3202 }
3203 }
3204 }
3205
3206 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3207
3208 /* Update dump_header */
3209 driver_dump->hdr.len += ioa_dump->hdr.len;
3210 wmb();
3211 ioa_cfg->sdt_state = DUMP_OBTAINED;
3212 LEAVE;
3213 }
3214
3215 #else
3216 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0)
3217 #endif
3218
3219 /**
3220 * ipr_release_dump - Free adapter dump memory
3221 * @kref: kref struct
3222 *
3223 * Return value:
3224 * nothing
3225 **/
3226 static void ipr_release_dump(struct kref *kref)
3227 {
3228 struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref);
3229 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3230 unsigned long lock_flags = 0;
3231 int i;
3232
3233 ENTER;
3234 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3235 ioa_cfg->dump = NULL;
3236 ioa_cfg->sdt_state = INACTIVE;
3237 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3238
3239 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3240 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3241
3242 vfree(dump->ioa_dump.ioa_data);
3243 kfree(dump);
3244 LEAVE;
3245 }
3246
3247 /**
3248 * ipr_worker_thread - Worker thread
3249 * @work: ioa config struct
3250 *
3251 * Called at task level from a work thread. This function takes care
3252 * of adding and removing device from the mid-layer as configuration
3253 * changes are detected by the adapter.
3254 *
3255 * Return value:
3256 * nothing
3257 **/
3258 static void ipr_worker_thread(struct work_struct *work)
3259 {
3260 unsigned long lock_flags;
3261 struct ipr_resource_entry *res;
3262 struct scsi_device *sdev;
3263 struct ipr_dump *dump;
3264 struct ipr_ioa_cfg *ioa_cfg =
3265 container_of(work, struct ipr_ioa_cfg, work_q);
3266 u8 bus, target, lun;
3267 int did_work;
3268
3269 ENTER;
3270 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3271
3272 if (ioa_cfg->sdt_state == READ_DUMP) {
3273 dump = ioa_cfg->dump;
3274 if (!dump) {
3275 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3276 return;
3277 }
3278 kref_get(&dump->kref);
3279 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3280 ipr_get_ioa_dump(ioa_cfg, dump);
3281 kref_put(&dump->kref, ipr_release_dump);
3282
3283 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3284 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout)
3285 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3286 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3287 return;
3288 }
3289
3290 restart:
3291 do {
3292 did_work = 0;
3293 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
3294 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3295 return;
3296 }
3297
3298 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3299 if (res->del_from_ml && res->sdev) {
3300 did_work = 1;
3301 sdev = res->sdev;
3302 if (!scsi_device_get(sdev)) {
3303 if (!res->add_to_ml)
3304 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3305 else
3306 res->del_from_ml = 0;
3307 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3308 scsi_remove_device(sdev);
3309 scsi_device_put(sdev);
3310 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3311 }
3312 break;
3313 }
3314 }
3315 } while (did_work);
3316
3317 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3318 if (res->add_to_ml) {
3319 bus = res->bus;
3320 target = res->target;
3321 lun = res->lun;
3322 res->add_to_ml = 0;
3323 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3324 scsi_add_device(ioa_cfg->host, bus, target, lun);
3325 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3326 goto restart;
3327 }
3328 }
3329
3330 ioa_cfg->scan_done = 1;
3331 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3332 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3333 LEAVE;
3334 }
3335
3336 #ifdef CONFIG_SCSI_IPR_TRACE
3337 /**
3338 * ipr_read_trace - Dump the adapter trace
3339 * @filp: open sysfs file
3340 * @kobj: kobject struct
3341 * @bin_attr: bin_attribute struct
3342 * @buf: buffer
3343 * @off: offset
3344 * @count: buffer size
3345 *
3346 * Return value:
3347 * number of bytes printed to buffer
3348 **/
3349 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3350 struct bin_attribute *bin_attr,
3351 char *buf, loff_t off, size_t count)
3352 {
3353 struct device *dev = container_of(kobj, struct device, kobj);
3354 struct Scsi_Host *shost = class_to_shost(dev);
3355 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3356 unsigned long lock_flags = 0;
3357 ssize_t ret;
3358
3359 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3360 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3361 IPR_TRACE_SIZE);
3362 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3363
3364 return ret;
3365 }
3366
3367 static struct bin_attribute ipr_trace_attr = {
3368 .attr = {
3369 .name = "trace",
3370 .mode = S_IRUGO,
3371 },
3372 .size = 0,
3373 .read = ipr_read_trace,
3374 };
3375 #endif
3376
3377 /**
3378 * ipr_show_fw_version - Show the firmware version
3379 * @dev: class device struct
3380 * @buf: buffer
3381 *
3382 * Return value:
3383 * number of bytes printed to buffer
3384 **/
3385 static ssize_t ipr_show_fw_version(struct device *dev,
3386 struct device_attribute *attr, char *buf)
3387 {
3388 struct Scsi_Host *shost = class_to_shost(dev);
3389 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3390 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3391 unsigned long lock_flags = 0;
3392 int len;
3393
3394 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3395 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3396 ucode_vpd->major_release, ucode_vpd->card_type,
3397 ucode_vpd->minor_release[0],
3398 ucode_vpd->minor_release[1]);
3399 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3400 return len;
3401 }
3402
3403 static struct device_attribute ipr_fw_version_attr = {
3404 .attr = {
3405 .name = "fw_version",
3406 .mode = S_IRUGO,
3407 },
3408 .show = ipr_show_fw_version,
3409 };
3410
3411 /**
3412 * ipr_show_log_level - Show the adapter's error logging level
3413 * @dev: class device struct
3414 * @buf: buffer
3415 *
3416 * Return value:
3417 * number of bytes printed to buffer
3418 **/
3419 static ssize_t ipr_show_log_level(struct device *dev,
3420 struct device_attribute *attr, char *buf)
3421 {
3422 struct Scsi_Host *shost = class_to_shost(dev);
3423 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3424 unsigned long lock_flags = 0;
3425 int len;
3426
3427 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3428 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3429 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3430 return len;
3431 }
3432
3433 /**
3434 * ipr_store_log_level - Change the adapter's error logging level
3435 * @dev: class device struct
3436 * @buf: buffer
3437 *
3438 * Return value:
3439 * number of bytes printed to buffer
3440 **/
3441 static ssize_t ipr_store_log_level(struct device *dev,
3442 struct device_attribute *attr,
3443 const char *buf, size_t count)
3444 {
3445 struct Scsi_Host *shost = class_to_shost(dev);
3446 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3447 unsigned long lock_flags = 0;
3448
3449 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3450 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3451 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3452 return strlen(buf);
3453 }
3454
3455 static struct device_attribute ipr_log_level_attr = {
3456 .attr = {
3457 .name = "log_level",
3458 .mode = S_IRUGO | S_IWUSR,
3459 },
3460 .show = ipr_show_log_level,
3461 .store = ipr_store_log_level
3462 };
3463
3464 /**
3465 * ipr_store_diagnostics - IOA Diagnostics interface
3466 * @dev: device struct
3467 * @buf: buffer
3468 * @count: buffer size
3469 *
3470 * This function will reset the adapter and wait a reasonable
3471 * amount of time for any errors that the adapter might log.
3472 *
3473 * Return value:
3474 * count on success / other on failure
3475 **/
3476 static ssize_t ipr_store_diagnostics(struct device *dev,
3477 struct device_attribute *attr,
3478 const char *buf, size_t count)
3479 {
3480 struct Scsi_Host *shost = class_to_shost(dev);
3481 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3482 unsigned long lock_flags = 0;
3483 int rc = count;
3484
3485 if (!capable(CAP_SYS_ADMIN))
3486 return -EACCES;
3487
3488 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3489 while (ioa_cfg->in_reset_reload) {
3490 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3491 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3492 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3493 }
3494
3495 ioa_cfg->errors_logged = 0;
3496 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3497
3498 if (ioa_cfg->in_reset_reload) {
3499 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3500 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3501
3502 /* Wait for a second for any errors to be logged */
3503 msleep(1000);
3504 } else {
3505 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3506 return -EIO;
3507 }
3508
3509 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3510 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3511 rc = -EIO;
3512 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3513
3514 return rc;
3515 }
3516
3517 static struct device_attribute ipr_diagnostics_attr = {
3518 .attr = {
3519 .name = "run_diagnostics",
3520 .mode = S_IWUSR,
3521 },
3522 .store = ipr_store_diagnostics
3523 };
3524
3525 /**
3526 * ipr_show_adapter_state - Show the adapter's state
3527 * @class_dev: device struct
3528 * @buf: buffer
3529 *
3530 * Return value:
3531 * number of bytes printed to buffer
3532 **/
3533 static ssize_t ipr_show_adapter_state(struct device *dev,
3534 struct device_attribute *attr, char *buf)
3535 {
3536 struct Scsi_Host *shost = class_to_shost(dev);
3537 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3538 unsigned long lock_flags = 0;
3539 int len;
3540
3541 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3542 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
3543 len = snprintf(buf, PAGE_SIZE, "offline\n");
3544 else
3545 len = snprintf(buf, PAGE_SIZE, "online\n");
3546 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3547 return len;
3548 }
3549
3550 /**
3551 * ipr_store_adapter_state - Change adapter state
3552 * @dev: device struct
3553 * @buf: buffer
3554 * @count: buffer size
3555 *
3556 * This function will change the adapter's state.
3557 *
3558 * Return value:
3559 * count on success / other on failure
3560 **/
3561 static ssize_t ipr_store_adapter_state(struct device *dev,
3562 struct device_attribute *attr,
3563 const char *buf, size_t count)
3564 {
3565 struct Scsi_Host *shost = class_to_shost(dev);
3566 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3567 unsigned long lock_flags;
3568 int result = count, i;
3569
3570 if (!capable(CAP_SYS_ADMIN))
3571 return -EACCES;
3572
3573 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3574 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead &&
3575 !strncmp(buf, "online", 6)) {
3576 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
3577 spin_lock(&ioa_cfg->hrrq[i]._lock);
3578 ioa_cfg->hrrq[i].ioa_is_dead = 0;
3579 spin_unlock(&ioa_cfg->hrrq[i]._lock);
3580 }
3581 wmb();
3582 ioa_cfg->reset_retries = 0;
3583 ioa_cfg->in_ioa_bringdown = 0;
3584 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3585 }
3586 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3587 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3588
3589 return result;
3590 }
3591
3592 static struct device_attribute ipr_ioa_state_attr = {
3593 .attr = {
3594 .name = "online_state",
3595 .mode = S_IRUGO | S_IWUSR,
3596 },
3597 .show = ipr_show_adapter_state,
3598 .store = ipr_store_adapter_state
3599 };
3600
3601 /**
3602 * ipr_store_reset_adapter - Reset the adapter
3603 * @dev: device struct
3604 * @buf: buffer
3605 * @count: buffer size
3606 *
3607 * This function will reset the adapter.
3608 *
3609 * Return value:
3610 * count on success / other on failure
3611 **/
3612 static ssize_t ipr_store_reset_adapter(struct device *dev,
3613 struct device_attribute *attr,
3614 const char *buf, size_t count)
3615 {
3616 struct Scsi_Host *shost = class_to_shost(dev);
3617 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3618 unsigned long lock_flags;
3619 int result = count;
3620
3621 if (!capable(CAP_SYS_ADMIN))
3622 return -EACCES;
3623
3624 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3625 if (!ioa_cfg->in_reset_reload)
3626 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3627 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3628 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3629
3630 return result;
3631 }
3632
3633 static struct device_attribute ipr_ioa_reset_attr = {
3634 .attr = {
3635 .name = "reset_host",
3636 .mode = S_IWUSR,
3637 },
3638 .store = ipr_store_reset_adapter
3639 };
3640
3641 static int ipr_iopoll(struct irq_poll *iop, int budget);
3642 /**
3643 * ipr_show_iopoll_weight - Show ipr polling mode
3644 * @dev: class device struct
3645 * @buf: buffer
3646 *
3647 * Return value:
3648 * number of bytes printed to buffer
3649 **/
3650 static ssize_t ipr_show_iopoll_weight(struct device *dev,
3651 struct device_attribute *attr, char *buf)
3652 {
3653 struct Scsi_Host *shost = class_to_shost(dev);
3654 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3655 unsigned long lock_flags = 0;
3656 int len;
3657
3658 spin_lock_irqsave(shost->host_lock, lock_flags);
3659 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight);
3660 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3661
3662 return len;
3663 }
3664
3665 /**
3666 * ipr_store_iopoll_weight - Change the adapter's polling mode
3667 * @dev: class device struct
3668 * @buf: buffer
3669 *
3670 * Return value:
3671 * number of bytes printed to buffer
3672 **/
3673 static ssize_t ipr_store_iopoll_weight(struct device *dev,
3674 struct device_attribute *attr,
3675 const char *buf, size_t count)
3676 {
3677 struct Scsi_Host *shost = class_to_shost(dev);
3678 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3679 unsigned long user_iopoll_weight;
3680 unsigned long lock_flags = 0;
3681 int i;
3682
3683 if (!ioa_cfg->sis64) {
3684 dev_info(&ioa_cfg->pdev->dev, "irq_poll not supported on this adapter\n");
3685 return -EINVAL;
3686 }
3687 if (kstrtoul(buf, 10, &user_iopoll_weight))
3688 return -EINVAL;
3689
3690 if (user_iopoll_weight > 256) {
3691 dev_info(&ioa_cfg->pdev->dev, "Invalid irq_poll weight. It must be less than 256\n");
3692 return -EINVAL;
3693 }
3694
3695 if (user_iopoll_weight == ioa_cfg->iopoll_weight) {
3696 dev_info(&ioa_cfg->pdev->dev, "Current irq_poll weight has the same weight\n");
3697 return strlen(buf);
3698 }
3699
3700 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3701 for (i = 1; i < ioa_cfg->hrrq_num; i++)
3702 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
3703 }
3704
3705 spin_lock_irqsave(shost->host_lock, lock_flags);
3706 ioa_cfg->iopoll_weight = user_iopoll_weight;
3707 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3708 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
3709 irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
3710 ioa_cfg->iopoll_weight, ipr_iopoll);
3711 }
3712 }
3713 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3714
3715 return strlen(buf);
3716 }
3717
3718 static struct device_attribute ipr_iopoll_weight_attr = {
3719 .attr = {
3720 .name = "iopoll_weight",
3721 .mode = S_IRUGO | S_IWUSR,
3722 },
3723 .show = ipr_show_iopoll_weight,
3724 .store = ipr_store_iopoll_weight
3725 };
3726
3727 /**
3728 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3729 * @buf_len: buffer length
3730 *
3731 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3732 * list to use for microcode download
3733 *
3734 * Return value:
3735 * pointer to sglist / NULL on failure
3736 **/
3737 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3738 {
3739 int sg_size, order, bsize_elem, num_elem, i, j;
3740 struct ipr_sglist *sglist;
3741 struct scatterlist *scatterlist;
3742 struct page *page;
3743
3744 /* Get the minimum size per scatter/gather element */
3745 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3746
3747 /* Get the actual size per element */
3748 order = get_order(sg_size);
3749
3750 /* Determine the actual number of bytes per element */
3751 bsize_elem = PAGE_SIZE * (1 << order);
3752
3753 /* Determine the actual number of sg entries needed */
3754 if (buf_len % bsize_elem)
3755 num_elem = (buf_len / bsize_elem) + 1;
3756 else
3757 num_elem = buf_len / bsize_elem;
3758
3759 /* Allocate a scatter/gather list for the DMA */
3760 sglist = kzalloc(sizeof(struct ipr_sglist) +
3761 (sizeof(struct scatterlist) * (num_elem - 1)),
3762 GFP_KERNEL);
3763
3764 if (sglist == NULL) {
3765 ipr_trace;
3766 return NULL;
3767 }
3768
3769 scatterlist = sglist->scatterlist;
3770 sg_init_table(scatterlist, num_elem);
3771
3772 sglist->order = order;
3773 sglist->num_sg = num_elem;
3774
3775 /* Allocate a bunch of sg elements */
3776 for (i = 0; i < num_elem; i++) {
3777 page = alloc_pages(GFP_KERNEL, order);
3778 if (!page) {
3779 ipr_trace;
3780
3781 /* Free up what we already allocated */
3782 for (j = i - 1; j >= 0; j--)
3783 __free_pages(sg_page(&scatterlist[j]), order);
3784 kfree(sglist);
3785 return NULL;
3786 }
3787
3788 sg_set_page(&scatterlist[i], page, 0, 0);
3789 }
3790
3791 return sglist;
3792 }
3793
3794 /**
3795 * ipr_free_ucode_buffer - Frees a microcode download buffer
3796 * @p_dnld: scatter/gather list pointer
3797 *
3798 * Free a DMA'able ucode download buffer previously allocated with
3799 * ipr_alloc_ucode_buffer
3800 *
3801 * Return value:
3802 * nothing
3803 **/
3804 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3805 {
3806 int i;
3807
3808 for (i = 0; i < sglist->num_sg; i++)
3809 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
3810
3811 kfree(sglist);
3812 }
3813
3814 /**
3815 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3816 * @sglist: scatter/gather list pointer
3817 * @buffer: buffer pointer
3818 * @len: buffer length
3819 *
3820 * Copy a microcode image from a user buffer into a buffer allocated by
3821 * ipr_alloc_ucode_buffer
3822 *
3823 * Return value:
3824 * 0 on success / other on failure
3825 **/
3826 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3827 u8 *buffer, u32 len)
3828 {
3829 int bsize_elem, i, result = 0;
3830 struct scatterlist *scatterlist;
3831 void *kaddr;
3832
3833 /* Determine the actual number of bytes per element */
3834 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3835
3836 scatterlist = sglist->scatterlist;
3837
3838 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3839 struct page *page = sg_page(&scatterlist[i]);
3840
3841 kaddr = kmap(page);
3842 memcpy(kaddr, buffer, bsize_elem);
3843 kunmap(page);
3844
3845 scatterlist[i].length = bsize_elem;
3846
3847 if (result != 0) {
3848 ipr_trace;
3849 return result;
3850 }
3851 }
3852
3853 if (len % bsize_elem) {
3854 struct page *page = sg_page(&scatterlist[i]);
3855
3856 kaddr = kmap(page);
3857 memcpy(kaddr, buffer, len % bsize_elem);
3858 kunmap(page);
3859
3860 scatterlist[i].length = len % bsize_elem;
3861 }
3862
3863 sglist->buffer_len = len;
3864 return result;
3865 }
3866
3867 /**
3868 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3869 * @ipr_cmd: ipr command struct
3870 * @sglist: scatter/gather list
3871 *
3872 * Builds a microcode download IOA data list (IOADL).
3873 *
3874 **/
3875 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3876 struct ipr_sglist *sglist)
3877 {
3878 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3879 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3880 struct scatterlist *scatterlist = sglist->scatterlist;
3881 int i;
3882
3883 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3884 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3885 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3886
3887 ioarcb->ioadl_len =
3888 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3889 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3890 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3891 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3892 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3893 }
3894
3895 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3896 }
3897
3898 /**
3899 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3900 * @ipr_cmd: ipr command struct
3901 * @sglist: scatter/gather list
3902 *
3903 * Builds a microcode download IOA data list (IOADL).
3904 *
3905 **/
3906 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3907 struct ipr_sglist *sglist)
3908 {
3909 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3910 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3911 struct scatterlist *scatterlist = sglist->scatterlist;
3912 int i;
3913
3914 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3915 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3916 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3917
3918 ioarcb->ioadl_len =
3919 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3920
3921 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3922 ioadl[i].flags_and_data_len =
3923 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3924 ioadl[i].address =
3925 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3926 }
3927
3928 ioadl[i-1].flags_and_data_len |=
3929 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3930 }
3931
3932 /**
3933 * ipr_update_ioa_ucode - Update IOA's microcode
3934 * @ioa_cfg: ioa config struct
3935 * @sglist: scatter/gather list
3936 *
3937 * Initiate an adapter reset to update the IOA's microcode
3938 *
3939 * Return value:
3940 * 0 on success / -EIO on failure
3941 **/
3942 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3943 struct ipr_sglist *sglist)
3944 {
3945 unsigned long lock_flags;
3946
3947 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3948 while (ioa_cfg->in_reset_reload) {
3949 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3950 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3951 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3952 }
3953
3954 if (ioa_cfg->ucode_sglist) {
3955 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3956 dev_err(&ioa_cfg->pdev->dev,
3957 "Microcode download already in progress\n");
3958 return -EIO;
3959 }
3960
3961 sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev,
3962 sglist->scatterlist, sglist->num_sg,
3963 DMA_TO_DEVICE);
3964
3965 if (!sglist->num_dma_sg) {
3966 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3967 dev_err(&ioa_cfg->pdev->dev,
3968 "Failed to map microcode download buffer!\n");
3969 return -EIO;
3970 }
3971
3972 ioa_cfg->ucode_sglist = sglist;
3973 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3974 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3975 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3976
3977 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3978 ioa_cfg->ucode_sglist = NULL;
3979 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3980 return 0;
3981 }
3982
3983 /**
3984 * ipr_store_update_fw - Update the firmware on the adapter
3985 * @class_dev: device struct
3986 * @buf: buffer
3987 * @count: buffer size
3988 *
3989 * This function will update the firmware on the adapter.
3990 *
3991 * Return value:
3992 * count on success / other on failure
3993 **/
3994 static ssize_t ipr_store_update_fw(struct device *dev,
3995 struct device_attribute *attr,
3996 const char *buf, size_t count)
3997 {
3998 struct Scsi_Host *shost = class_to_shost(dev);
3999 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4000 struct ipr_ucode_image_header *image_hdr;
4001 const struct firmware *fw_entry;
4002 struct ipr_sglist *sglist;
4003 char fname[100];
4004 char *src;
4005 int result, dnld_size;
4006
4007 if (!capable(CAP_SYS_ADMIN))
4008 return -EACCES;
4009
4010 snprintf(fname, sizeof(fname), "%s", buf);
4011
4012 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
4013 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
4014 return -EIO;
4015 }
4016
4017 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
4018
4019 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
4020 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
4021 sglist = ipr_alloc_ucode_buffer(dnld_size);
4022
4023 if (!sglist) {
4024 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
4025 release_firmware(fw_entry);
4026 return -ENOMEM;
4027 }
4028
4029 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
4030
4031 if (result) {
4032 dev_err(&ioa_cfg->pdev->dev,
4033 "Microcode buffer copy to DMA buffer failed\n");
4034 goto out;
4035 }
4036
4037 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n");
4038
4039 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
4040
4041 if (!result)
4042 result = count;
4043 out:
4044 ipr_free_ucode_buffer(sglist);
4045 release_firmware(fw_entry);
4046 return result;
4047 }
4048
4049 static struct device_attribute ipr_update_fw_attr = {
4050 .attr = {
4051 .name = "update_fw",
4052 .mode = S_IWUSR,
4053 },
4054 .store = ipr_store_update_fw
4055 };
4056
4057 /**
4058 * ipr_show_fw_type - Show the adapter's firmware type.
4059 * @dev: class device struct
4060 * @buf: buffer
4061 *
4062 * Return value:
4063 * number of bytes printed to buffer
4064 **/
4065 static ssize_t ipr_show_fw_type(struct device *dev,
4066 struct device_attribute *attr, char *buf)
4067 {
4068 struct Scsi_Host *shost = class_to_shost(dev);
4069 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4070 unsigned long lock_flags = 0;
4071 int len;
4072
4073 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4074 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
4075 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4076 return len;
4077 }
4078
4079 static struct device_attribute ipr_ioa_fw_type_attr = {
4080 .attr = {
4081 .name = "fw_type",
4082 .mode = S_IRUGO,
4083 },
4084 .show = ipr_show_fw_type
4085 };
4086
4087 static struct device_attribute *ipr_ioa_attrs[] = {
4088 &ipr_fw_version_attr,
4089 &ipr_log_level_attr,
4090 &ipr_diagnostics_attr,
4091 &ipr_ioa_state_attr,
4092 &ipr_ioa_reset_attr,
4093 &ipr_update_fw_attr,
4094 &ipr_ioa_fw_type_attr,
4095 &ipr_iopoll_weight_attr,
4096 NULL,
4097 };
4098
4099 #ifdef CONFIG_SCSI_IPR_DUMP
4100 /**
4101 * ipr_read_dump - Dump the adapter
4102 * @filp: open sysfs file
4103 * @kobj: kobject struct
4104 * @bin_attr: bin_attribute struct
4105 * @buf: buffer
4106 * @off: offset
4107 * @count: buffer size
4108 *
4109 * Return value:
4110 * number of bytes printed to buffer
4111 **/
4112 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
4113 struct bin_attribute *bin_attr,
4114 char *buf, loff_t off, size_t count)
4115 {
4116 struct device *cdev = container_of(kobj, struct device, kobj);
4117 struct Scsi_Host *shost = class_to_shost(cdev);
4118 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4119 struct ipr_dump *dump;
4120 unsigned long lock_flags = 0;
4121 char *src;
4122 int len, sdt_end;
4123 size_t rc = count;
4124
4125 if (!capable(CAP_SYS_ADMIN))
4126 return -EACCES;
4127
4128 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4129 dump = ioa_cfg->dump;
4130
4131 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
4132 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4133 return 0;
4134 }
4135 kref_get(&dump->kref);
4136 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4137
4138 if (off > dump->driver_dump.hdr.len) {
4139 kref_put(&dump->kref, ipr_release_dump);
4140 return 0;
4141 }
4142
4143 if (off + count > dump->driver_dump.hdr.len) {
4144 count = dump->driver_dump.hdr.len - off;
4145 rc = count;
4146 }
4147
4148 if (count && off < sizeof(dump->driver_dump)) {
4149 if (off + count > sizeof(dump->driver_dump))
4150 len = sizeof(dump->driver_dump) - off;
4151 else
4152 len = count;
4153 src = (u8 *)&dump->driver_dump + off;
4154 memcpy(buf, src, len);
4155 buf += len;
4156 off += len;
4157 count -= len;
4158 }
4159
4160 off -= sizeof(dump->driver_dump);
4161
4162 if (ioa_cfg->sis64)
4163 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4164 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
4165 sizeof(struct ipr_sdt_entry));
4166 else
4167 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4168 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
4169
4170 if (count && off < sdt_end) {
4171 if (off + count > sdt_end)
4172 len = sdt_end - off;
4173 else
4174 len = count;
4175 src = (u8 *)&dump->ioa_dump + off;
4176 memcpy(buf, src, len);
4177 buf += len;
4178 off += len;
4179 count -= len;
4180 }
4181
4182 off -= sdt_end;
4183
4184 while (count) {
4185 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
4186 len = PAGE_ALIGN(off) - off;
4187 else
4188 len = count;
4189 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
4190 src += off & ~PAGE_MASK;
4191 memcpy(buf, src, len);
4192 buf += len;
4193 off += len;
4194 count -= len;
4195 }
4196
4197 kref_put(&dump->kref, ipr_release_dump);
4198 return rc;
4199 }
4200
4201 /**
4202 * ipr_alloc_dump - Prepare for adapter dump
4203 * @ioa_cfg: ioa config struct
4204 *
4205 * Return value:
4206 * 0 on success / other on failure
4207 **/
4208 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
4209 {
4210 struct ipr_dump *dump;
4211 __be32 **ioa_data;
4212 unsigned long lock_flags = 0;
4213
4214 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
4215
4216 if (!dump) {
4217 ipr_err("Dump memory allocation failed\n");
4218 return -ENOMEM;
4219 }
4220
4221 if (ioa_cfg->sis64)
4222 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4223 else
4224 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4225
4226 if (!ioa_data) {
4227 ipr_err("Dump memory allocation failed\n");
4228 kfree(dump);
4229 return -ENOMEM;
4230 }
4231
4232 dump->ioa_dump.ioa_data = ioa_data;
4233
4234 kref_init(&dump->kref);
4235 dump->ioa_cfg = ioa_cfg;
4236
4237 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4238
4239 if (INACTIVE != ioa_cfg->sdt_state) {
4240 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4241 vfree(dump->ioa_dump.ioa_data);
4242 kfree(dump);
4243 return 0;
4244 }
4245
4246 ioa_cfg->dump = dump;
4247 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
4248 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) {
4249 ioa_cfg->dump_taken = 1;
4250 schedule_work(&ioa_cfg->work_q);
4251 }
4252 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4253
4254 return 0;
4255 }
4256
4257 /**
4258 * ipr_free_dump - Free adapter dump memory
4259 * @ioa_cfg: ioa config struct
4260 *
4261 * Return value:
4262 * 0 on success / other on failure
4263 **/
4264 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
4265 {
4266 struct ipr_dump *dump;
4267 unsigned long lock_flags = 0;
4268
4269 ENTER;
4270
4271 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4272 dump = ioa_cfg->dump;
4273 if (!dump) {
4274 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4275 return 0;
4276 }
4277
4278 ioa_cfg->dump = NULL;
4279 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4280
4281 kref_put(&dump->kref, ipr_release_dump);
4282
4283 LEAVE;
4284 return 0;
4285 }
4286
4287 /**
4288 * ipr_write_dump - Setup dump state of adapter
4289 * @filp: open sysfs file
4290 * @kobj: kobject struct
4291 * @bin_attr: bin_attribute struct
4292 * @buf: buffer
4293 * @off: offset
4294 * @count: buffer size
4295 *
4296 * Return value:
4297 * number of bytes printed to buffer
4298 **/
4299 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4300 struct bin_attribute *bin_attr,
4301 char *buf, loff_t off, size_t count)
4302 {
4303 struct device *cdev = container_of(kobj, struct device, kobj);
4304 struct Scsi_Host *shost = class_to_shost(cdev);
4305 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4306 int rc;
4307
4308 if (!capable(CAP_SYS_ADMIN))
4309 return -EACCES;
4310
4311 if (buf[0] == '1')
4312 rc = ipr_alloc_dump(ioa_cfg);
4313 else if (buf[0] == '0')
4314 rc = ipr_free_dump(ioa_cfg);
4315 else
4316 return -EINVAL;
4317
4318 if (rc)
4319 return rc;
4320 else
4321 return count;
4322 }
4323
4324 static struct bin_attribute ipr_dump_attr = {
4325 .attr = {
4326 .name = "dump",
4327 .mode = S_IRUSR | S_IWUSR,
4328 },
4329 .size = 0,
4330 .read = ipr_read_dump,
4331 .write = ipr_write_dump
4332 };
4333 #else
4334 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4335 #endif
4336
4337 /**
4338 * ipr_change_queue_depth - Change the device's queue depth
4339 * @sdev: scsi device struct
4340 * @qdepth: depth to set
4341 * @reason: calling context
4342 *
4343 * Return value:
4344 * actual depth set
4345 **/
4346 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
4347 {
4348 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4349 struct ipr_resource_entry *res;
4350 unsigned long lock_flags = 0;
4351
4352 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4353 res = (struct ipr_resource_entry *)sdev->hostdata;
4354
4355 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4356 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4357 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4358
4359 scsi_change_queue_depth(sdev, qdepth);
4360 return sdev->queue_depth;
4361 }
4362
4363 /**
4364 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4365 * @dev: device struct
4366 * @attr: device attribute structure
4367 * @buf: buffer
4368 *
4369 * Return value:
4370 * number of bytes printed to buffer
4371 **/
4372 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4373 {
4374 struct scsi_device *sdev = to_scsi_device(dev);
4375 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4376 struct ipr_resource_entry *res;
4377 unsigned long lock_flags = 0;
4378 ssize_t len = -ENXIO;
4379
4380 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4381 res = (struct ipr_resource_entry *)sdev->hostdata;
4382 if (res)
4383 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4384 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4385 return len;
4386 }
4387
4388 static struct device_attribute ipr_adapter_handle_attr = {
4389 .attr = {
4390 .name = "adapter_handle",
4391 .mode = S_IRUSR,
4392 },
4393 .show = ipr_show_adapter_handle
4394 };
4395
4396 /**
4397 * ipr_show_resource_path - Show the resource path or the resource address for
4398 * this device.
4399 * @dev: device struct
4400 * @attr: device attribute structure
4401 * @buf: buffer
4402 *
4403 * Return value:
4404 * number of bytes printed to buffer
4405 **/
4406 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4407 {
4408 struct scsi_device *sdev = to_scsi_device(dev);
4409 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4410 struct ipr_resource_entry *res;
4411 unsigned long lock_flags = 0;
4412 ssize_t len = -ENXIO;
4413 char buffer[IPR_MAX_RES_PATH_LENGTH];
4414
4415 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4416 res = (struct ipr_resource_entry *)sdev->hostdata;
4417 if (res && ioa_cfg->sis64)
4418 len = snprintf(buf, PAGE_SIZE, "%s\n",
4419 __ipr_format_res_path(res->res_path, buffer,
4420 sizeof(buffer)));
4421 else if (res)
4422 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4423 res->bus, res->target, res->lun);
4424
4425 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4426 return len;
4427 }
4428
4429 static struct device_attribute ipr_resource_path_attr = {
4430 .attr = {
4431 .name = "resource_path",
4432 .mode = S_IRUGO,
4433 },
4434 .show = ipr_show_resource_path
4435 };
4436
4437 /**
4438 * ipr_show_device_id - Show the device_id for this device.
4439 * @dev: device struct
4440 * @attr: device attribute structure
4441 * @buf: buffer
4442 *
4443 * Return value:
4444 * number of bytes printed to buffer
4445 **/
4446 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4447 {
4448 struct scsi_device *sdev = to_scsi_device(dev);
4449 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4450 struct ipr_resource_entry *res;
4451 unsigned long lock_flags = 0;
4452 ssize_t len = -ENXIO;
4453
4454 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4455 res = (struct ipr_resource_entry *)sdev->hostdata;
4456 if (res && ioa_cfg->sis64)
4457 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id));
4458 else if (res)
4459 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4460
4461 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4462 return len;
4463 }
4464
4465 static struct device_attribute ipr_device_id_attr = {
4466 .attr = {
4467 .name = "device_id",
4468 .mode = S_IRUGO,
4469 },
4470 .show = ipr_show_device_id
4471 };
4472
4473 /**
4474 * ipr_show_resource_type - Show the resource type for this device.
4475 * @dev: device struct
4476 * @attr: device attribute structure
4477 * @buf: buffer
4478 *
4479 * Return value:
4480 * number of bytes printed to buffer
4481 **/
4482 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4483 {
4484 struct scsi_device *sdev = to_scsi_device(dev);
4485 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4486 struct ipr_resource_entry *res;
4487 unsigned long lock_flags = 0;
4488 ssize_t len = -ENXIO;
4489
4490 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4491 res = (struct ipr_resource_entry *)sdev->hostdata;
4492
4493 if (res)
4494 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4495
4496 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4497 return len;
4498 }
4499
4500 static struct device_attribute ipr_resource_type_attr = {
4501 .attr = {
4502 .name = "resource_type",
4503 .mode = S_IRUGO,
4504 },
4505 .show = ipr_show_resource_type
4506 };
4507
4508 /**
4509 * ipr_show_raw_mode - Show the adapter's raw mode
4510 * @dev: class device struct
4511 * @buf: buffer
4512 *
4513 * Return value:
4514 * number of bytes printed to buffer
4515 **/
4516 static ssize_t ipr_show_raw_mode(struct device *dev,
4517 struct device_attribute *attr, char *buf)
4518 {
4519 struct scsi_device *sdev = to_scsi_device(dev);
4520 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4521 struct ipr_resource_entry *res;
4522 unsigned long lock_flags = 0;
4523 ssize_t len;
4524
4525 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4526 res = (struct ipr_resource_entry *)sdev->hostdata;
4527 if (res)
4528 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode);
4529 else
4530 len = -ENXIO;
4531 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4532 return len;
4533 }
4534
4535 /**
4536 * ipr_store_raw_mode - Change the adapter's raw mode
4537 * @dev: class device struct
4538 * @buf: buffer
4539 *
4540 * Return value:
4541 * number of bytes printed to buffer
4542 **/
4543 static ssize_t ipr_store_raw_mode(struct device *dev,
4544 struct device_attribute *attr,
4545 const char *buf, size_t count)
4546 {
4547 struct scsi_device *sdev = to_scsi_device(dev);
4548 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4549 struct ipr_resource_entry *res;
4550 unsigned long lock_flags = 0;
4551 ssize_t len;
4552
4553 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4554 res = (struct ipr_resource_entry *)sdev->hostdata;
4555 if (res) {
4556 if (ipr_is_af_dasd_device(res)) {
4557 res->raw_mode = simple_strtoul(buf, NULL, 10);
4558 len = strlen(buf);
4559 if (res->sdev)
4560 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n",
4561 res->raw_mode ? "enabled" : "disabled");
4562 } else
4563 len = -EINVAL;
4564 } else
4565 len = -ENXIO;
4566 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4567 return len;
4568 }
4569
4570 static struct device_attribute ipr_raw_mode_attr = {
4571 .attr = {
4572 .name = "raw_mode",
4573 .mode = S_IRUGO | S_IWUSR,
4574 },
4575 .show = ipr_show_raw_mode,
4576 .store = ipr_store_raw_mode
4577 };
4578
4579 static struct device_attribute *ipr_dev_attrs[] = {
4580 &ipr_adapter_handle_attr,
4581 &ipr_resource_path_attr,
4582 &ipr_device_id_attr,
4583 &ipr_resource_type_attr,
4584 &ipr_raw_mode_attr,
4585 NULL,
4586 };
4587
4588 /**
4589 * ipr_biosparam - Return the HSC mapping
4590 * @sdev: scsi device struct
4591 * @block_device: block device pointer
4592 * @capacity: capacity of the device
4593 * @parm: Array containing returned HSC values.
4594 *
4595 * This function generates the HSC parms that fdisk uses.
4596 * We want to make sure we return something that places partitions
4597 * on 4k boundaries for best performance with the IOA.
4598 *
4599 * Return value:
4600 * 0 on success
4601 **/
4602 static int ipr_biosparam(struct scsi_device *sdev,
4603 struct block_device *block_device,
4604 sector_t capacity, int *parm)
4605 {
4606 int heads, sectors;
4607 sector_t cylinders;
4608
4609 heads = 128;
4610 sectors = 32;
4611
4612 cylinders = capacity;
4613 sector_div(cylinders, (128 * 32));
4614
4615 /* return result */
4616 parm[0] = heads;
4617 parm[1] = sectors;
4618 parm[2] = cylinders;
4619
4620 return 0;
4621 }
4622
4623 /**
4624 * ipr_find_starget - Find target based on bus/target.
4625 * @starget: scsi target struct
4626 *
4627 * Return value:
4628 * resource entry pointer if found / NULL if not found
4629 **/
4630 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4631 {
4632 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4633 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4634 struct ipr_resource_entry *res;
4635
4636 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4637 if ((res->bus == starget->channel) &&
4638 (res->target == starget->id)) {
4639 return res;
4640 }
4641 }
4642
4643 return NULL;
4644 }
4645
4646 static struct ata_port_info sata_port_info;
4647
4648 /**
4649 * ipr_target_alloc - Prepare for commands to a SCSI target
4650 * @starget: scsi target struct
4651 *
4652 * If the device is a SATA device, this function allocates an
4653 * ATA port with libata, else it does nothing.
4654 *
4655 * Return value:
4656 * 0 on success / non-0 on failure
4657 **/
4658 static int ipr_target_alloc(struct scsi_target *starget)
4659 {
4660 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4661 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4662 struct ipr_sata_port *sata_port;
4663 struct ata_port *ap;
4664 struct ipr_resource_entry *res;
4665 unsigned long lock_flags;
4666
4667 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4668 res = ipr_find_starget(starget);
4669 starget->hostdata = NULL;
4670
4671 if (res && ipr_is_gata(res)) {
4672 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4673 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4674 if (!sata_port)
4675 return -ENOMEM;
4676
4677 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4678 if (ap) {
4679 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4680 sata_port->ioa_cfg = ioa_cfg;
4681 sata_port->ap = ap;
4682 sata_port->res = res;
4683
4684 res->sata_port = sata_port;
4685 ap->private_data = sata_port;
4686 starget->hostdata = sata_port;
4687 } else {
4688 kfree(sata_port);
4689 return -ENOMEM;
4690 }
4691 }
4692 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4693
4694 return 0;
4695 }
4696
4697 /**
4698 * ipr_target_destroy - Destroy a SCSI target
4699 * @starget: scsi target struct
4700 *
4701 * If the device was a SATA device, this function frees the libata
4702 * ATA port, else it does nothing.
4703 *
4704 **/
4705 static void ipr_target_destroy(struct scsi_target *starget)
4706 {
4707 struct ipr_sata_port *sata_port = starget->hostdata;
4708 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4709 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4710
4711 if (ioa_cfg->sis64) {
4712 if (!ipr_find_starget(starget)) {
4713 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4714 clear_bit(starget->id, ioa_cfg->array_ids);
4715 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4716 clear_bit(starget->id, ioa_cfg->vset_ids);
4717 else if (starget->channel == 0)
4718 clear_bit(starget->id, ioa_cfg->target_ids);
4719 }
4720 }
4721
4722 if (sata_port) {
4723 starget->hostdata = NULL;
4724 ata_sas_port_destroy(sata_port->ap);
4725 kfree(sata_port);
4726 }
4727 }
4728
4729 /**
4730 * ipr_find_sdev - Find device based on bus/target/lun.
4731 * @sdev: scsi device struct
4732 *
4733 * Return value:
4734 * resource entry pointer if found / NULL if not found
4735 **/
4736 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4737 {
4738 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4739 struct ipr_resource_entry *res;
4740
4741 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4742 if ((res->bus == sdev->channel) &&
4743 (res->target == sdev->id) &&
4744 (res->lun == sdev->lun))
4745 return res;
4746 }
4747
4748 return NULL;
4749 }
4750
4751 /**
4752 * ipr_slave_destroy - Unconfigure a SCSI device
4753 * @sdev: scsi device struct
4754 *
4755 * Return value:
4756 * nothing
4757 **/
4758 static void ipr_slave_destroy(struct scsi_device *sdev)
4759 {
4760 struct ipr_resource_entry *res;
4761 struct ipr_ioa_cfg *ioa_cfg;
4762 unsigned long lock_flags = 0;
4763
4764 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4765
4766 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4767 res = (struct ipr_resource_entry *) sdev->hostdata;
4768 if (res) {
4769 if (res->sata_port)
4770 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4771 sdev->hostdata = NULL;
4772 res->sdev = NULL;
4773 res->sata_port = NULL;
4774 }
4775 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4776 }
4777
4778 /**
4779 * ipr_slave_configure - Configure a SCSI device
4780 * @sdev: scsi device struct
4781 *
4782 * This function configures the specified scsi device.
4783 *
4784 * Return value:
4785 * 0 on success
4786 **/
4787 static int ipr_slave_configure(struct scsi_device *sdev)
4788 {
4789 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4790 struct ipr_resource_entry *res;
4791 struct ata_port *ap = NULL;
4792 unsigned long lock_flags = 0;
4793 char buffer[IPR_MAX_RES_PATH_LENGTH];
4794
4795 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4796 res = sdev->hostdata;
4797 if (res) {
4798 if (ipr_is_af_dasd_device(res))
4799 sdev->type = TYPE_RAID;
4800 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4801 sdev->scsi_level = 4;
4802 sdev->no_uld_attach = 1;
4803 }
4804 if (ipr_is_vset_device(res)) {
4805 sdev->scsi_level = SCSI_SPC_3;
4806 blk_queue_rq_timeout(sdev->request_queue,
4807 IPR_VSET_RW_TIMEOUT);
4808 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4809 }
4810 if (ipr_is_gata(res) && res->sata_port)
4811 ap = res->sata_port->ap;
4812 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4813
4814 if (ap) {
4815 scsi_change_queue_depth(sdev, IPR_MAX_CMD_PER_ATA_LUN);
4816 ata_sas_slave_configure(sdev, ap);
4817 }
4818
4819 if (ioa_cfg->sis64)
4820 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4821 ipr_format_res_path(ioa_cfg,
4822 res->res_path, buffer, sizeof(buffer)));
4823 return 0;
4824 }
4825 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4826 return 0;
4827 }
4828
4829 /**
4830 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4831 * @sdev: scsi device struct
4832 *
4833 * This function initializes an ATA port so that future commands
4834 * sent through queuecommand will work.
4835 *
4836 * Return value:
4837 * 0 on success
4838 **/
4839 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4840 {
4841 struct ipr_sata_port *sata_port = NULL;
4842 int rc = -ENXIO;
4843
4844 ENTER;
4845 if (sdev->sdev_target)
4846 sata_port = sdev->sdev_target->hostdata;
4847 if (sata_port) {
4848 rc = ata_sas_port_init(sata_port->ap);
4849 if (rc == 0)
4850 rc = ata_sas_sync_probe(sata_port->ap);
4851 }
4852
4853 if (rc)
4854 ipr_slave_destroy(sdev);
4855
4856 LEAVE;
4857 return rc;
4858 }
4859
4860 /**
4861 * ipr_slave_alloc - Prepare for commands to a device.
4862 * @sdev: scsi device struct
4863 *
4864 * This function saves a pointer to the resource entry
4865 * in the scsi device struct if the device exists. We
4866 * can then use this pointer in ipr_queuecommand when
4867 * handling new commands.
4868 *
4869 * Return value:
4870 * 0 on success / -ENXIO if device does not exist
4871 **/
4872 static int ipr_slave_alloc(struct scsi_device *sdev)
4873 {
4874 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4875 struct ipr_resource_entry *res;
4876 unsigned long lock_flags;
4877 int rc = -ENXIO;
4878
4879 sdev->hostdata = NULL;
4880
4881 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4882
4883 res = ipr_find_sdev(sdev);
4884 if (res) {
4885 res->sdev = sdev;
4886 res->add_to_ml = 0;
4887 res->in_erp = 0;
4888 sdev->hostdata = res;
4889 if (!ipr_is_naca_model(res))
4890 res->needs_sync_complete = 1;
4891 rc = 0;
4892 if (ipr_is_gata(res)) {
4893 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4894 return ipr_ata_slave_alloc(sdev);
4895 }
4896 }
4897
4898 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4899
4900 return rc;
4901 }
4902
4903 /**
4904 * ipr_match_lun - Match function for specified LUN
4905 * @ipr_cmd: ipr command struct
4906 * @device: device to match (sdev)
4907 *
4908 * Returns:
4909 * 1 if command matches sdev / 0 if command does not match sdev
4910 **/
4911 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device)
4912 {
4913 if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device)
4914 return 1;
4915 return 0;
4916 }
4917
4918 /**
4919 * ipr_wait_for_ops - Wait for matching commands to complete
4920 * @ipr_cmd: ipr command struct
4921 * @device: device to match (sdev)
4922 * @match: match function to use
4923 *
4924 * Returns:
4925 * SUCCESS / FAILED
4926 **/
4927 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device,
4928 int (*match)(struct ipr_cmnd *, void *))
4929 {
4930 struct ipr_cmnd *ipr_cmd;
4931 int wait;
4932 unsigned long flags;
4933 struct ipr_hrr_queue *hrrq;
4934 signed long timeout = IPR_ABORT_TASK_TIMEOUT;
4935 DECLARE_COMPLETION_ONSTACK(comp);
4936
4937 ENTER;
4938 do {
4939 wait = 0;
4940
4941 for_each_hrrq(hrrq, ioa_cfg) {
4942 spin_lock_irqsave(hrrq->lock, flags);
4943 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
4944 if (match(ipr_cmd, device)) {
4945 ipr_cmd->eh_comp = &comp;
4946 wait++;
4947 }
4948 }
4949 spin_unlock_irqrestore(hrrq->lock, flags);
4950 }
4951
4952 if (wait) {
4953 timeout = wait_for_completion_timeout(&comp, timeout);
4954
4955 if (!timeout) {
4956 wait = 0;
4957
4958 for_each_hrrq(hrrq, ioa_cfg) {
4959 spin_lock_irqsave(hrrq->lock, flags);
4960 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
4961 if (match(ipr_cmd, device)) {
4962 ipr_cmd->eh_comp = NULL;
4963 wait++;
4964 }
4965 }
4966 spin_unlock_irqrestore(hrrq->lock, flags);
4967 }
4968
4969 if (wait)
4970 dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n");
4971 LEAVE;
4972 return wait ? FAILED : SUCCESS;
4973 }
4974 }
4975 } while (wait);
4976
4977 LEAVE;
4978 return SUCCESS;
4979 }
4980
4981 static int ipr_eh_host_reset(struct scsi_cmnd *cmd)
4982 {
4983 struct ipr_ioa_cfg *ioa_cfg;
4984 unsigned long lock_flags = 0;
4985 int rc = SUCCESS;
4986
4987 ENTER;
4988 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
4989 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4990
4991 if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
4992 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4993 dev_err(&ioa_cfg->pdev->dev,
4994 "Adapter being reset as a result of error recovery.\n");
4995
4996 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4997 ioa_cfg->sdt_state = GET_DUMP;
4998 }
4999
5000 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5001 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5002 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5003
5004 /* If we got hit with a host reset while we were already resetting
5005 the adapter for some reason, and the reset failed. */
5006 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
5007 ipr_trace;
5008 rc = FAILED;
5009 }
5010
5011 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5012 LEAVE;
5013 return rc;
5014 }
5015
5016 /**
5017 * ipr_device_reset - Reset the device
5018 * @ioa_cfg: ioa config struct
5019 * @res: resource entry struct
5020 *
5021 * This function issues a device reset to the affected device.
5022 * If the device is a SCSI device, a LUN reset will be sent
5023 * to the device first. If that does not work, a target reset
5024 * will be sent. If the device is a SATA device, a PHY reset will
5025 * be sent.
5026 *
5027 * Return value:
5028 * 0 on success / non-zero on failure
5029 **/
5030 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
5031 struct ipr_resource_entry *res)
5032 {
5033 struct ipr_cmnd *ipr_cmd;
5034 struct ipr_ioarcb *ioarcb;
5035 struct ipr_cmd_pkt *cmd_pkt;
5036 struct ipr_ioarcb_ata_regs *regs;
5037 u32 ioasc;
5038
5039 ENTER;
5040 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5041 ioarcb = &ipr_cmd->ioarcb;
5042 cmd_pkt = &ioarcb->cmd_pkt;
5043
5044 if (ipr_cmd->ioa_cfg->sis64) {
5045 regs = &ipr_cmd->i.ata_ioadl.regs;
5046 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
5047 } else
5048 regs = &ioarcb->u.add_data.u.regs;
5049
5050 ioarcb->res_handle = res->res_handle;
5051 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5052 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5053 if (ipr_is_gata(res)) {
5054 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
5055 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
5056 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5057 }
5058
5059 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5060 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5061 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5062 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
5063 if (ipr_cmd->ioa_cfg->sis64)
5064 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
5065 sizeof(struct ipr_ioasa_gata));
5066 else
5067 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
5068 sizeof(struct ipr_ioasa_gata));
5069 }
5070
5071 LEAVE;
5072 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0;
5073 }
5074
5075 /**
5076 * ipr_sata_reset - Reset the SATA port
5077 * @link: SATA link to reset
5078 * @classes: class of the attached device
5079 *
5080 * This function issues a SATA phy reset to the affected ATA link.
5081 *
5082 * Return value:
5083 * 0 on success / non-zero on failure
5084 **/
5085 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
5086 unsigned long deadline)
5087 {
5088 struct ipr_sata_port *sata_port = link->ap->private_data;
5089 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5090 struct ipr_resource_entry *res;
5091 unsigned long lock_flags = 0;
5092 int rc = -ENXIO;
5093
5094 ENTER;
5095 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5096 while (ioa_cfg->in_reset_reload) {
5097 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5098 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5099 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5100 }
5101
5102 res = sata_port->res;
5103 if (res) {
5104 rc = ipr_device_reset(ioa_cfg, res);
5105 *classes = res->ata_class;
5106 }
5107
5108 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5109 LEAVE;
5110 return rc;
5111 }
5112
5113 /**
5114 * ipr_eh_dev_reset - Reset the device
5115 * @scsi_cmd: scsi command struct
5116 *
5117 * This function issues a device reset to the affected device.
5118 * A LUN reset will be sent to the device first. If that does
5119 * not work, a target reset will be sent.
5120 *
5121 * Return value:
5122 * SUCCESS / FAILED
5123 **/
5124 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd)
5125 {
5126 struct ipr_cmnd *ipr_cmd;
5127 struct ipr_ioa_cfg *ioa_cfg;
5128 struct ipr_resource_entry *res;
5129 struct ata_port *ap;
5130 int rc = 0;
5131 struct ipr_hrr_queue *hrrq;
5132
5133 ENTER;
5134 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5135 res = scsi_cmd->device->hostdata;
5136
5137 if (!res)
5138 return FAILED;
5139
5140 /*
5141 * If we are currently going through reset/reload, return failed. This will force the
5142 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
5143 * reset to complete
5144 */
5145 if (ioa_cfg->in_reset_reload)
5146 return FAILED;
5147 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5148 return FAILED;
5149
5150 for_each_hrrq(hrrq, ioa_cfg) {
5151 spin_lock(&hrrq->_lock);
5152 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5153 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
5154 if (ipr_cmd->scsi_cmd)
5155 ipr_cmd->done = ipr_scsi_eh_done;
5156 if (ipr_cmd->qc)
5157 ipr_cmd->done = ipr_sata_eh_done;
5158 if (ipr_cmd->qc &&
5159 !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
5160 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
5161 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
5162 }
5163 }
5164 }
5165 spin_unlock(&hrrq->_lock);
5166 }
5167 res->resetting_device = 1;
5168 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
5169
5170 if (ipr_is_gata(res) && res->sata_port) {
5171 ap = res->sata_port->ap;
5172 spin_unlock_irq(scsi_cmd->device->host->host_lock);
5173 ata_std_error_handler(ap);
5174 spin_lock_irq(scsi_cmd->device->host->host_lock);
5175
5176 for_each_hrrq(hrrq, ioa_cfg) {
5177 spin_lock(&hrrq->_lock);
5178 list_for_each_entry(ipr_cmd,
5179 &hrrq->hrrq_pending_q, queue) {
5180 if (ipr_cmd->ioarcb.res_handle ==
5181 res->res_handle) {
5182 rc = -EIO;
5183 break;
5184 }
5185 }
5186 spin_unlock(&hrrq->_lock);
5187 }
5188 } else
5189 rc = ipr_device_reset(ioa_cfg, res);
5190 res->resetting_device = 0;
5191 res->reset_occurred = 1;
5192
5193 LEAVE;
5194 return rc ? FAILED : SUCCESS;
5195 }
5196
5197 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd)
5198 {
5199 int rc;
5200 struct ipr_ioa_cfg *ioa_cfg;
5201
5202 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5203
5204 spin_lock_irq(cmd->device->host->host_lock);
5205 rc = __ipr_eh_dev_reset(cmd);
5206 spin_unlock_irq(cmd->device->host->host_lock);
5207
5208 if (rc == SUCCESS)
5209 rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun);
5210
5211 return rc;
5212 }
5213
5214 /**
5215 * ipr_bus_reset_done - Op done function for bus reset.
5216 * @ipr_cmd: ipr command struct
5217 *
5218 * This function is the op done function for a bus reset
5219 *
5220 * Return value:
5221 * none
5222 **/
5223 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
5224 {
5225 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5226 struct ipr_resource_entry *res;
5227
5228 ENTER;
5229 if (!ioa_cfg->sis64)
5230 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5231 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
5232 scsi_report_bus_reset(ioa_cfg->host, res->bus);
5233 break;
5234 }
5235 }
5236
5237 /*
5238 * If abort has not completed, indicate the reset has, else call the
5239 * abort's done function to wake the sleeping eh thread
5240 */
5241 if (ipr_cmd->sibling->sibling)
5242 ipr_cmd->sibling->sibling = NULL;
5243 else
5244 ipr_cmd->sibling->done(ipr_cmd->sibling);
5245
5246 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5247 LEAVE;
5248 }
5249
5250 /**
5251 * ipr_abort_timeout - An abort task has timed out
5252 * @ipr_cmd: ipr command struct
5253 *
5254 * This function handles when an abort task times out. If this
5255 * happens we issue a bus reset since we have resources tied
5256 * up that must be freed before returning to the midlayer.
5257 *
5258 * Return value:
5259 * none
5260 **/
5261 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
5262 {
5263 struct ipr_cmnd *reset_cmd;
5264 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5265 struct ipr_cmd_pkt *cmd_pkt;
5266 unsigned long lock_flags = 0;
5267
5268 ENTER;
5269 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5270 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
5271 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5272 return;
5273 }
5274
5275 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
5276 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5277 ipr_cmd->sibling = reset_cmd;
5278 reset_cmd->sibling = ipr_cmd;
5279 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
5280 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
5281 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5282 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5283 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
5284
5285 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5286 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5287 LEAVE;
5288 }
5289
5290 /**
5291 * ipr_cancel_op - Cancel specified op
5292 * @scsi_cmd: scsi command struct
5293 *
5294 * This function cancels specified op.
5295 *
5296 * Return value:
5297 * SUCCESS / FAILED
5298 **/
5299 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd)
5300 {
5301 struct ipr_cmnd *ipr_cmd;
5302 struct ipr_ioa_cfg *ioa_cfg;
5303 struct ipr_resource_entry *res;
5304 struct ipr_cmd_pkt *cmd_pkt;
5305 u32 ioasc, int_reg;
5306 int op_found = 0;
5307 struct ipr_hrr_queue *hrrq;
5308
5309 ENTER;
5310 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5311 res = scsi_cmd->device->hostdata;
5312
5313 /* If we are currently going through reset/reload, return failed.
5314 * This will force the mid-layer to call ipr_eh_host_reset,
5315 * which will then go to sleep and wait for the reset to complete
5316 */
5317 if (ioa_cfg->in_reset_reload ||
5318 ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5319 return FAILED;
5320 if (!res)
5321 return FAILED;
5322
5323 /*
5324 * If we are aborting a timed out op, chances are that the timeout was caused
5325 * by a still not detected EEH error. In such cases, reading a register will
5326 * trigger the EEH recovery infrastructure.
5327 */
5328 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5329
5330 if (!ipr_is_gscsi(res))
5331 return FAILED;
5332
5333 for_each_hrrq(hrrq, ioa_cfg) {
5334 spin_lock(&hrrq->_lock);
5335 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5336 if (ipr_cmd->scsi_cmd == scsi_cmd) {
5337 ipr_cmd->done = ipr_scsi_eh_done;
5338 op_found = 1;
5339 break;
5340 }
5341 }
5342 spin_unlock(&hrrq->_lock);
5343 }
5344
5345 if (!op_found)
5346 return SUCCESS;
5347
5348 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5349 ipr_cmd->ioarcb.res_handle = res->res_handle;
5350 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5351 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5352 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5353 ipr_cmd->u.sdev = scsi_cmd->device;
5354
5355 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
5356 scsi_cmd->cmnd[0]);
5357 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
5358 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5359
5360 /*
5361 * If the abort task timed out and we sent a bus reset, we will get
5362 * one the following responses to the abort
5363 */
5364 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
5365 ioasc = 0;
5366 ipr_trace;
5367 }
5368
5369 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5370 if (!ipr_is_naca_model(res))
5371 res->needs_sync_complete = 1;
5372
5373 LEAVE;
5374 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS;
5375 }
5376
5377 /**
5378 * ipr_eh_abort - Abort a single op
5379 * @scsi_cmd: scsi command struct
5380 *
5381 * Return value:
5382 * 0 if scan in progress / 1 if scan is complete
5383 **/
5384 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time)
5385 {
5386 unsigned long lock_flags;
5387 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
5388 int rc = 0;
5389
5390 spin_lock_irqsave(shost->host_lock, lock_flags);
5391 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done)
5392 rc = 1;
5393 if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2))
5394 rc = 1;
5395 spin_unlock_irqrestore(shost->host_lock, lock_flags);
5396 return rc;
5397 }
5398
5399 /**
5400 * ipr_eh_host_reset - Reset the host adapter
5401 * @scsi_cmd: scsi command struct
5402 *
5403 * Return value:
5404 * SUCCESS / FAILED
5405 **/
5406 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd)
5407 {
5408 unsigned long flags;
5409 int rc;
5410 struct ipr_ioa_cfg *ioa_cfg;
5411
5412 ENTER;
5413
5414 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5415
5416 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
5417 rc = ipr_cancel_op(scsi_cmd);
5418 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
5419
5420 if (rc == SUCCESS)
5421 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun);
5422 LEAVE;
5423 return rc;
5424 }
5425
5426 /**
5427 * ipr_handle_other_interrupt - Handle "other" interrupts
5428 * @ioa_cfg: ioa config struct
5429 * @int_reg: interrupt register
5430 *
5431 * Return value:
5432 * IRQ_NONE / IRQ_HANDLED
5433 **/
5434 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
5435 u32 int_reg)
5436 {
5437 irqreturn_t rc = IRQ_HANDLED;
5438 u32 int_mask_reg;
5439
5440 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5441 int_reg &= ~int_mask_reg;
5442
5443 /* If an interrupt on the adapter did not occur, ignore it.
5444 * Or in the case of SIS 64, check for a stage change interrupt.
5445 */
5446 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5447 if (ioa_cfg->sis64) {
5448 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5449 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5450 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5451
5452 /* clear stage change */
5453 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5454 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5455 list_del(&ioa_cfg->reset_cmd->queue);
5456 del_timer(&ioa_cfg->reset_cmd->timer);
5457 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5458 return IRQ_HANDLED;
5459 }
5460 }
5461
5462 return IRQ_NONE;
5463 }
5464
5465 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5466 /* Mask the interrupt */
5467 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5468 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5469
5470 list_del(&ioa_cfg->reset_cmd->queue);
5471 del_timer(&ioa_cfg->reset_cmd->timer);
5472 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5473 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5474 if (ioa_cfg->clear_isr) {
5475 if (ipr_debug && printk_ratelimit())
5476 dev_err(&ioa_cfg->pdev->dev,
5477 "Spurious interrupt detected. 0x%08X\n", int_reg);
5478 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5479 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5480 return IRQ_NONE;
5481 }
5482 } else {
5483 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5484 ioa_cfg->ioa_unit_checked = 1;
5485 else if (int_reg & IPR_PCII_NO_HOST_RRQ)
5486 dev_err(&ioa_cfg->pdev->dev,
5487 "No Host RRQ. 0x%08X\n", int_reg);
5488 else
5489 dev_err(&ioa_cfg->pdev->dev,
5490 "Permanent IOA failure. 0x%08X\n", int_reg);
5491
5492 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5493 ioa_cfg->sdt_state = GET_DUMP;
5494
5495 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5496 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5497 }
5498
5499 return rc;
5500 }
5501
5502 /**
5503 * ipr_isr_eh - Interrupt service routine error handler
5504 * @ioa_cfg: ioa config struct
5505 * @msg: message to log
5506 *
5507 * Return value:
5508 * none
5509 **/
5510 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number)
5511 {
5512 ioa_cfg->errors_logged++;
5513 dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number);
5514
5515 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5516 ioa_cfg->sdt_state = GET_DUMP;
5517
5518 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5519 }
5520
5521 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget,
5522 struct list_head *doneq)
5523 {
5524 u32 ioasc;
5525 u16 cmd_index;
5526 struct ipr_cmnd *ipr_cmd;
5527 struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg;
5528 int num_hrrq = 0;
5529
5530 /* If interrupts are disabled, ignore the interrupt */
5531 if (!hrr_queue->allow_interrupts)
5532 return 0;
5533
5534 while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5535 hrr_queue->toggle_bit) {
5536
5537 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) &
5538 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >>
5539 IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5540
5541 if (unlikely(cmd_index > hrr_queue->max_cmd_id ||
5542 cmd_index < hrr_queue->min_cmd_id)) {
5543 ipr_isr_eh(ioa_cfg,
5544 "Invalid response handle from IOA: ",
5545 cmd_index);
5546 break;
5547 }
5548
5549 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5550 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5551
5552 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5553
5554 list_move_tail(&ipr_cmd->queue, doneq);
5555
5556 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) {
5557 hrr_queue->hrrq_curr++;
5558 } else {
5559 hrr_queue->hrrq_curr = hrr_queue->hrrq_start;
5560 hrr_queue->toggle_bit ^= 1u;
5561 }
5562 num_hrrq++;
5563 if (budget > 0 && num_hrrq >= budget)
5564 break;
5565 }
5566
5567 return num_hrrq;
5568 }
5569
5570 static int ipr_iopoll(struct irq_poll *iop, int budget)
5571 {
5572 struct ipr_ioa_cfg *ioa_cfg;
5573 struct ipr_hrr_queue *hrrq;
5574 struct ipr_cmnd *ipr_cmd, *temp;
5575 unsigned long hrrq_flags;
5576 int completed_ops;
5577 LIST_HEAD(doneq);
5578
5579 hrrq = container_of(iop, struct ipr_hrr_queue, iopoll);
5580 ioa_cfg = hrrq->ioa_cfg;
5581
5582 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5583 completed_ops = ipr_process_hrrq(hrrq, budget, &doneq);
5584
5585 if (completed_ops < budget)
5586 irq_poll_complete(iop);
5587 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5588
5589 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5590 list_del(&ipr_cmd->queue);
5591 del_timer(&ipr_cmd->timer);
5592 ipr_cmd->fast_done(ipr_cmd);
5593 }
5594
5595 return completed_ops;
5596 }
5597
5598 /**
5599 * ipr_isr - Interrupt service routine
5600 * @irq: irq number
5601 * @devp: pointer to ioa config struct
5602 *
5603 * Return value:
5604 * IRQ_NONE / IRQ_HANDLED
5605 **/
5606 static irqreturn_t ipr_isr(int irq, void *devp)
5607 {
5608 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5609 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5610 unsigned long hrrq_flags = 0;
5611 u32 int_reg = 0;
5612 int num_hrrq = 0;
5613 int irq_none = 0;
5614 struct ipr_cmnd *ipr_cmd, *temp;
5615 irqreturn_t rc = IRQ_NONE;
5616 LIST_HEAD(doneq);
5617
5618 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5619 /* If interrupts are disabled, ignore the interrupt */
5620 if (!hrrq->allow_interrupts) {
5621 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5622 return IRQ_NONE;
5623 }
5624
5625 while (1) {
5626 if (ipr_process_hrrq(hrrq, -1, &doneq)) {
5627 rc = IRQ_HANDLED;
5628
5629 if (!ioa_cfg->clear_isr)
5630 break;
5631
5632 /* Clear the PCI interrupt */
5633 num_hrrq = 0;
5634 do {
5635 writel(IPR_PCII_HRRQ_UPDATED,
5636 ioa_cfg->regs.clr_interrupt_reg32);
5637 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5638 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5639 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5640
5641 } else if (rc == IRQ_NONE && irq_none == 0) {
5642 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5643 irq_none++;
5644 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5645 int_reg & IPR_PCII_HRRQ_UPDATED) {
5646 ipr_isr_eh(ioa_cfg,
5647 "Error clearing HRRQ: ", num_hrrq);
5648 rc = IRQ_HANDLED;
5649 break;
5650 } else
5651 break;
5652 }
5653
5654 if (unlikely(rc == IRQ_NONE))
5655 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5656
5657 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5658 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5659 list_del(&ipr_cmd->queue);
5660 del_timer(&ipr_cmd->timer);
5661 ipr_cmd->fast_done(ipr_cmd);
5662 }
5663 return rc;
5664 }
5665
5666 /**
5667 * ipr_isr_mhrrq - Interrupt service routine
5668 * @irq: irq number
5669 * @devp: pointer to ioa config struct
5670 *
5671 * Return value:
5672 * IRQ_NONE / IRQ_HANDLED
5673 **/
5674 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp)
5675 {
5676 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5677 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5678 unsigned long hrrq_flags = 0;
5679 struct ipr_cmnd *ipr_cmd, *temp;
5680 irqreturn_t rc = IRQ_NONE;
5681 LIST_HEAD(doneq);
5682
5683 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5684
5685 /* If interrupts are disabled, ignore the interrupt */
5686 if (!hrrq->allow_interrupts) {
5687 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5688 return IRQ_NONE;
5689 }
5690
5691 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
5692 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5693 hrrq->toggle_bit) {
5694 irq_poll_sched(&hrrq->iopoll);
5695 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5696 return IRQ_HANDLED;
5697 }
5698 } else {
5699 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5700 hrrq->toggle_bit)
5701
5702 if (ipr_process_hrrq(hrrq, -1, &doneq))
5703 rc = IRQ_HANDLED;
5704 }
5705
5706 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5707
5708 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5709 list_del(&ipr_cmd->queue);
5710 del_timer(&ipr_cmd->timer);
5711 ipr_cmd->fast_done(ipr_cmd);
5712 }
5713 return rc;
5714 }
5715
5716 /**
5717 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5718 * @ioa_cfg: ioa config struct
5719 * @ipr_cmd: ipr command struct
5720 *
5721 * Return value:
5722 * 0 on success / -1 on failure
5723 **/
5724 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5725 struct ipr_cmnd *ipr_cmd)
5726 {
5727 int i, nseg;
5728 struct scatterlist *sg;
5729 u32 length;
5730 u32 ioadl_flags = 0;
5731 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5732 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5733 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5734
5735 length = scsi_bufflen(scsi_cmd);
5736 if (!length)
5737 return 0;
5738
5739 nseg = scsi_dma_map(scsi_cmd);
5740 if (nseg < 0) {
5741 if (printk_ratelimit())
5742 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5743 return -1;
5744 }
5745
5746 ipr_cmd->dma_use_sg = nseg;
5747
5748 ioarcb->data_transfer_length = cpu_to_be32(length);
5749 ioarcb->ioadl_len =
5750 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5751
5752 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5753 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5754 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5755 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5756 ioadl_flags = IPR_IOADL_FLAGS_READ;
5757
5758 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5759 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5760 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5761 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5762 }
5763
5764 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5765 return 0;
5766 }
5767
5768 /**
5769 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5770 * @ioa_cfg: ioa config struct
5771 * @ipr_cmd: ipr command struct
5772 *
5773 * Return value:
5774 * 0 on success / -1 on failure
5775 **/
5776 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5777 struct ipr_cmnd *ipr_cmd)
5778 {
5779 int i, nseg;
5780 struct scatterlist *sg;
5781 u32 length;
5782 u32 ioadl_flags = 0;
5783 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5784 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5785 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5786
5787 length = scsi_bufflen(scsi_cmd);
5788 if (!length)
5789 return 0;
5790
5791 nseg = scsi_dma_map(scsi_cmd);
5792 if (nseg < 0) {
5793 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5794 return -1;
5795 }
5796
5797 ipr_cmd->dma_use_sg = nseg;
5798
5799 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5800 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5801 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5802 ioarcb->data_transfer_length = cpu_to_be32(length);
5803 ioarcb->ioadl_len =
5804 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5805 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5806 ioadl_flags = IPR_IOADL_FLAGS_READ;
5807 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5808 ioarcb->read_ioadl_len =
5809 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5810 }
5811
5812 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5813 ioadl = ioarcb->u.add_data.u.ioadl;
5814 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5815 offsetof(struct ipr_ioarcb, u.add_data));
5816 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5817 }
5818
5819 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5820 ioadl[i].flags_and_data_len =
5821 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5822 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5823 }
5824
5825 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5826 return 0;
5827 }
5828
5829 /**
5830 * ipr_erp_done - Process completion of ERP for a device
5831 * @ipr_cmd: ipr command struct
5832 *
5833 * This function copies the sense buffer into the scsi_cmd
5834 * struct and pushes the scsi_done function.
5835 *
5836 * Return value:
5837 * nothing
5838 **/
5839 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5840 {
5841 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5842 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5843 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5844
5845 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5846 scsi_cmd->result |= (DID_ERROR << 16);
5847 scmd_printk(KERN_ERR, scsi_cmd,
5848 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5849 } else {
5850 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5851 SCSI_SENSE_BUFFERSIZE);
5852 }
5853
5854 if (res) {
5855 if (!ipr_is_naca_model(res))
5856 res->needs_sync_complete = 1;
5857 res->in_erp = 0;
5858 }
5859 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5860 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5861 scsi_cmd->scsi_done(scsi_cmd);
5862 }
5863
5864 /**
5865 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5866 * @ipr_cmd: ipr command struct
5867 *
5868 * Return value:
5869 * none
5870 **/
5871 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5872 {
5873 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5874 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5875 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5876
5877 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5878 ioarcb->data_transfer_length = 0;
5879 ioarcb->read_data_transfer_length = 0;
5880 ioarcb->ioadl_len = 0;
5881 ioarcb->read_ioadl_len = 0;
5882 ioasa->hdr.ioasc = 0;
5883 ioasa->hdr.residual_data_len = 0;
5884
5885 if (ipr_cmd->ioa_cfg->sis64)
5886 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5887 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5888 else {
5889 ioarcb->write_ioadl_addr =
5890 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5891 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5892 }
5893 }
5894
5895 /**
5896 * ipr_erp_request_sense - Send request sense to a device
5897 * @ipr_cmd: ipr command struct
5898 *
5899 * This function sends a request sense to a device as a result
5900 * of a check condition.
5901 *
5902 * Return value:
5903 * nothing
5904 **/
5905 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5906 {
5907 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5908 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5909
5910 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5911 ipr_erp_done(ipr_cmd);
5912 return;
5913 }
5914
5915 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5916
5917 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5918 cmd_pkt->cdb[0] = REQUEST_SENSE;
5919 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5920 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5921 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5922 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5923
5924 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5925 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
5926
5927 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5928 IPR_REQUEST_SENSE_TIMEOUT * 2);
5929 }
5930
5931 /**
5932 * ipr_erp_cancel_all - Send cancel all to a device
5933 * @ipr_cmd: ipr command struct
5934 *
5935 * This function sends a cancel all to a device to clear the
5936 * queue. If we are running TCQ on the device, QERR is set to 1,
5937 * which means all outstanding ops have been dropped on the floor.
5938 * Cancel all will return them to us.
5939 *
5940 * Return value:
5941 * nothing
5942 **/
5943 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5944 {
5945 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5946 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5947 struct ipr_cmd_pkt *cmd_pkt;
5948
5949 res->in_erp = 1;
5950
5951 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5952
5953 if (!scsi_cmd->device->simple_tags) {
5954 ipr_erp_request_sense(ipr_cmd);
5955 return;
5956 }
5957
5958 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5959 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5960 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5961
5962 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5963 IPR_CANCEL_ALL_TIMEOUT);
5964 }
5965
5966 /**
5967 * ipr_dump_ioasa - Dump contents of IOASA
5968 * @ioa_cfg: ioa config struct
5969 * @ipr_cmd: ipr command struct
5970 * @res: resource entry struct
5971 *
5972 * This function is invoked by the interrupt handler when ops
5973 * fail. It will log the IOASA if appropriate. Only called
5974 * for GPDD ops.
5975 *
5976 * Return value:
5977 * none
5978 **/
5979 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
5980 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
5981 {
5982 int i;
5983 u16 data_len;
5984 u32 ioasc, fd_ioasc;
5985 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5986 __be32 *ioasa_data = (__be32 *)ioasa;
5987 int error_index;
5988
5989 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5990 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
5991
5992 if (0 == ioasc)
5993 return;
5994
5995 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
5996 return;
5997
5998 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
5999 error_index = ipr_get_error(fd_ioasc);
6000 else
6001 error_index = ipr_get_error(ioasc);
6002
6003 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
6004 /* Don't log an error if the IOA already logged one */
6005 if (ioasa->hdr.ilid != 0)
6006 return;
6007
6008 if (!ipr_is_gscsi(res))
6009 return;
6010
6011 if (ipr_error_table[error_index].log_ioasa == 0)
6012 return;
6013 }
6014
6015 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
6016
6017 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
6018 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
6019 data_len = sizeof(struct ipr_ioasa64);
6020 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
6021 data_len = sizeof(struct ipr_ioasa);
6022
6023 ipr_err("IOASA Dump:\n");
6024
6025 for (i = 0; i < data_len / 4; i += 4) {
6026 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
6027 be32_to_cpu(ioasa_data[i]),
6028 be32_to_cpu(ioasa_data[i+1]),
6029 be32_to_cpu(ioasa_data[i+2]),
6030 be32_to_cpu(ioasa_data[i+3]));
6031 }
6032 }
6033
6034 /**
6035 * ipr_gen_sense - Generate SCSI sense data from an IOASA
6036 * @ioasa: IOASA
6037 * @sense_buf: sense data buffer
6038 *
6039 * Return value:
6040 * none
6041 **/
6042 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
6043 {
6044 u32 failing_lba;
6045 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
6046 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
6047 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6048 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
6049
6050 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
6051
6052 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
6053 return;
6054
6055 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
6056
6057 if (ipr_is_vset_device(res) &&
6058 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
6059 ioasa->u.vset.failing_lba_hi != 0) {
6060 sense_buf[0] = 0x72;
6061 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
6062 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
6063 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
6064
6065 sense_buf[7] = 12;
6066 sense_buf[8] = 0;
6067 sense_buf[9] = 0x0A;
6068 sense_buf[10] = 0x80;
6069
6070 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
6071
6072 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
6073 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
6074 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
6075 sense_buf[15] = failing_lba & 0x000000ff;
6076
6077 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6078
6079 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
6080 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
6081 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
6082 sense_buf[19] = failing_lba & 0x000000ff;
6083 } else {
6084 sense_buf[0] = 0x70;
6085 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
6086 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
6087 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
6088
6089 /* Illegal request */
6090 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
6091 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
6092 sense_buf[7] = 10; /* additional length */
6093
6094 /* IOARCB was in error */
6095 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
6096 sense_buf[15] = 0xC0;
6097 else /* Parameter data was invalid */
6098 sense_buf[15] = 0x80;
6099
6100 sense_buf[16] =
6101 ((IPR_FIELD_POINTER_MASK &
6102 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
6103 sense_buf[17] =
6104 (IPR_FIELD_POINTER_MASK &
6105 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
6106 } else {
6107 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
6108 if (ipr_is_vset_device(res))
6109 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6110 else
6111 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
6112
6113 sense_buf[0] |= 0x80; /* Or in the Valid bit */
6114 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
6115 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
6116 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
6117 sense_buf[6] = failing_lba & 0x000000ff;
6118 }
6119
6120 sense_buf[7] = 6; /* additional length */
6121 }
6122 }
6123 }
6124
6125 /**
6126 * ipr_get_autosense - Copy autosense data to sense buffer
6127 * @ipr_cmd: ipr command struct
6128 *
6129 * This function copies the autosense buffer to the buffer
6130 * in the scsi_cmd, if there is autosense available.
6131 *
6132 * Return value:
6133 * 1 if autosense was available / 0 if not
6134 **/
6135 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
6136 {
6137 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6138 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
6139
6140 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
6141 return 0;
6142
6143 if (ipr_cmd->ioa_cfg->sis64)
6144 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
6145 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
6146 SCSI_SENSE_BUFFERSIZE));
6147 else
6148 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
6149 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
6150 SCSI_SENSE_BUFFERSIZE));
6151 return 1;
6152 }
6153
6154 /**
6155 * ipr_erp_start - Process an error response for a SCSI op
6156 * @ioa_cfg: ioa config struct
6157 * @ipr_cmd: ipr command struct
6158 *
6159 * This function determines whether or not to initiate ERP
6160 * on the affected device.
6161 *
6162 * Return value:
6163 * nothing
6164 **/
6165 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
6166 struct ipr_cmnd *ipr_cmd)
6167 {
6168 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6169 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6170 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6171 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
6172
6173 if (!res) {
6174 ipr_scsi_eh_done(ipr_cmd);
6175 return;
6176 }
6177
6178 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
6179 ipr_gen_sense(ipr_cmd);
6180
6181 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6182
6183 switch (masked_ioasc) {
6184 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
6185 if (ipr_is_naca_model(res))
6186 scsi_cmd->result |= (DID_ABORT << 16);
6187 else
6188 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6189 break;
6190 case IPR_IOASC_IR_RESOURCE_HANDLE:
6191 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
6192 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6193 break;
6194 case IPR_IOASC_HW_SEL_TIMEOUT:
6195 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6196 if (!ipr_is_naca_model(res))
6197 res->needs_sync_complete = 1;
6198 break;
6199 case IPR_IOASC_SYNC_REQUIRED:
6200 if (!res->in_erp)
6201 res->needs_sync_complete = 1;
6202 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6203 break;
6204 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
6205 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
6206 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
6207 break;
6208 case IPR_IOASC_BUS_WAS_RESET:
6209 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
6210 /*
6211 * Report the bus reset and ask for a retry. The device
6212 * will give CC/UA the next command.
6213 */
6214 if (!res->resetting_device)
6215 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
6216 scsi_cmd->result |= (DID_ERROR << 16);
6217 if (!ipr_is_naca_model(res))
6218 res->needs_sync_complete = 1;
6219 break;
6220 case IPR_IOASC_HW_DEV_BUS_STATUS:
6221 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
6222 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
6223 if (!ipr_get_autosense(ipr_cmd)) {
6224 if (!ipr_is_naca_model(res)) {
6225 ipr_erp_cancel_all(ipr_cmd);
6226 return;
6227 }
6228 }
6229 }
6230 if (!ipr_is_naca_model(res))
6231 res->needs_sync_complete = 1;
6232 break;
6233 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
6234 break;
6235 case IPR_IOASC_IR_NON_OPTIMIZED:
6236 if (res->raw_mode) {
6237 res->raw_mode = 0;
6238 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6239 } else
6240 scsi_cmd->result |= (DID_ERROR << 16);
6241 break;
6242 default:
6243 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6244 scsi_cmd->result |= (DID_ERROR << 16);
6245 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
6246 res->needs_sync_complete = 1;
6247 break;
6248 }
6249
6250 scsi_dma_unmap(ipr_cmd->scsi_cmd);
6251 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6252 scsi_cmd->scsi_done(scsi_cmd);
6253 }
6254
6255 /**
6256 * ipr_scsi_done - mid-layer done function
6257 * @ipr_cmd: ipr command struct
6258 *
6259 * This function is invoked by the interrupt handler for
6260 * ops generated by the SCSI mid-layer
6261 *
6262 * Return value:
6263 * none
6264 **/
6265 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
6266 {
6267 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6268 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6269 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6270 unsigned long lock_flags;
6271
6272 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
6273
6274 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
6275 scsi_dma_unmap(scsi_cmd);
6276
6277 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
6278 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6279 scsi_cmd->scsi_done(scsi_cmd);
6280 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
6281 } else {
6282 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6283 spin_lock(&ipr_cmd->hrrq->_lock);
6284 ipr_erp_start(ioa_cfg, ipr_cmd);
6285 spin_unlock(&ipr_cmd->hrrq->_lock);
6286 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6287 }
6288 }
6289
6290 /**
6291 * ipr_queuecommand - Queue a mid-layer request
6292 * @shost: scsi host struct
6293 * @scsi_cmd: scsi command struct
6294 *
6295 * This function queues a request generated by the mid-layer.
6296 *
6297 * Return value:
6298 * 0 on success
6299 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
6300 * SCSI_MLQUEUE_HOST_BUSY if host is busy
6301 **/
6302 static int ipr_queuecommand(struct Scsi_Host *shost,
6303 struct scsi_cmnd *scsi_cmd)
6304 {
6305 struct ipr_ioa_cfg *ioa_cfg;
6306 struct ipr_resource_entry *res;
6307 struct ipr_ioarcb *ioarcb;
6308 struct ipr_cmnd *ipr_cmd;
6309 unsigned long hrrq_flags, lock_flags;
6310 int rc;
6311 struct ipr_hrr_queue *hrrq;
6312 int hrrq_id;
6313
6314 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
6315
6316 scsi_cmd->result = (DID_OK << 16);
6317 res = scsi_cmd->device->hostdata;
6318
6319 if (ipr_is_gata(res) && res->sata_port) {
6320 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6321 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
6322 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6323 return rc;
6324 }
6325
6326 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6327 hrrq = &ioa_cfg->hrrq[hrrq_id];
6328
6329 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6330 /*
6331 * We are currently blocking all devices due to a host reset
6332 * We have told the host to stop giving us new requests, but
6333 * ERP ops don't count. FIXME
6334 */
6335 if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) {
6336 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6337 return SCSI_MLQUEUE_HOST_BUSY;
6338 }
6339
6340 /*
6341 * FIXME - Create scsi_set_host_offline interface
6342 * and the ioa_is_dead check can be removed
6343 */
6344 if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) {
6345 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6346 goto err_nodev;
6347 }
6348
6349 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6350 if (ipr_cmd == NULL) {
6351 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6352 return SCSI_MLQUEUE_HOST_BUSY;
6353 }
6354 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6355
6356 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done);
6357 ioarcb = &ipr_cmd->ioarcb;
6358
6359 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
6360 ipr_cmd->scsi_cmd = scsi_cmd;
6361 ipr_cmd->done = ipr_scsi_eh_done;
6362
6363 if (ipr_is_gscsi(res)) {
6364 if (scsi_cmd->underflow == 0)
6365 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6366
6367 if (res->reset_occurred) {
6368 res->reset_occurred = 0;
6369 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
6370 }
6371 }
6372
6373 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
6374 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6375
6376 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
6377 if (scsi_cmd->flags & SCMD_TAGGED)
6378 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK;
6379 else
6380 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK;
6381 }
6382
6383 if (scsi_cmd->cmnd[0] >= 0xC0 &&
6384 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) {
6385 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6386 }
6387 if (res->raw_mode && ipr_is_af_dasd_device(res)) {
6388 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE;
6389
6390 if (scsi_cmd->underflow == 0)
6391 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6392 }
6393
6394 if (ioa_cfg->sis64)
6395 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
6396 else
6397 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
6398
6399 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6400 if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) {
6401 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6402 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6403 if (!rc)
6404 scsi_dma_unmap(scsi_cmd);
6405 return SCSI_MLQUEUE_HOST_BUSY;
6406 }
6407
6408 if (unlikely(hrrq->ioa_is_dead)) {
6409 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6410 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6411 scsi_dma_unmap(scsi_cmd);
6412 goto err_nodev;
6413 }
6414
6415 ioarcb->res_handle = res->res_handle;
6416 if (res->needs_sync_complete) {
6417 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
6418 res->needs_sync_complete = 0;
6419 }
6420 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q);
6421 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6422 ipr_send_command(ipr_cmd);
6423 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6424 return 0;
6425
6426 err_nodev:
6427 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6428 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
6429 scsi_cmd->result = (DID_NO_CONNECT << 16);
6430 scsi_cmd->scsi_done(scsi_cmd);
6431 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6432 return 0;
6433 }
6434
6435 /**
6436 * ipr_ioctl - IOCTL handler
6437 * @sdev: scsi device struct
6438 * @cmd: IOCTL cmd
6439 * @arg: IOCTL arg
6440 *
6441 * Return value:
6442 * 0 on success / other on failure
6443 **/
6444 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
6445 {
6446 struct ipr_resource_entry *res;
6447
6448 res = (struct ipr_resource_entry *)sdev->hostdata;
6449 if (res && ipr_is_gata(res)) {
6450 if (cmd == HDIO_GET_IDENTITY)
6451 return -ENOTTY;
6452 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
6453 }
6454
6455 return -EINVAL;
6456 }
6457
6458 /**
6459 * ipr_info - Get information about the card/driver
6460 * @scsi_host: scsi host struct
6461 *
6462 * Return value:
6463 * pointer to buffer with description string
6464 **/
6465 static const char *ipr_ioa_info(struct Scsi_Host *host)
6466 {
6467 static char buffer[512];
6468 struct ipr_ioa_cfg *ioa_cfg;
6469 unsigned long lock_flags = 0;
6470
6471 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
6472
6473 spin_lock_irqsave(host->host_lock, lock_flags);
6474 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
6475 spin_unlock_irqrestore(host->host_lock, lock_flags);
6476
6477 return buffer;
6478 }
6479
6480 static struct scsi_host_template driver_template = {
6481 .module = THIS_MODULE,
6482 .name = "IPR",
6483 .info = ipr_ioa_info,
6484 .ioctl = ipr_ioctl,
6485 .queuecommand = ipr_queuecommand,
6486 .eh_abort_handler = ipr_eh_abort,
6487 .eh_device_reset_handler = ipr_eh_dev_reset,
6488 .eh_host_reset_handler = ipr_eh_host_reset,
6489 .slave_alloc = ipr_slave_alloc,
6490 .slave_configure = ipr_slave_configure,
6491 .slave_destroy = ipr_slave_destroy,
6492 .scan_finished = ipr_scan_finished,
6493 .target_alloc = ipr_target_alloc,
6494 .target_destroy = ipr_target_destroy,
6495 .change_queue_depth = ipr_change_queue_depth,
6496 .bios_param = ipr_biosparam,
6497 .can_queue = IPR_MAX_COMMANDS,
6498 .this_id = -1,
6499 .sg_tablesize = IPR_MAX_SGLIST,
6500 .max_sectors = IPR_IOA_MAX_SECTORS,
6501 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
6502 .use_clustering = ENABLE_CLUSTERING,
6503 .shost_attrs = ipr_ioa_attrs,
6504 .sdev_attrs = ipr_dev_attrs,
6505 .proc_name = IPR_NAME,
6506 };
6507
6508 /**
6509 * ipr_ata_phy_reset - libata phy_reset handler
6510 * @ap: ata port to reset
6511 *
6512 **/
6513 static void ipr_ata_phy_reset(struct ata_port *ap)
6514 {
6515 unsigned long flags;
6516 struct ipr_sata_port *sata_port = ap->private_data;
6517 struct ipr_resource_entry *res = sata_port->res;
6518 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6519 int rc;
6520
6521 ENTER;
6522 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6523 while (ioa_cfg->in_reset_reload) {
6524 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6525 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6526 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6527 }
6528
6529 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
6530 goto out_unlock;
6531
6532 rc = ipr_device_reset(ioa_cfg, res);
6533
6534 if (rc) {
6535 ap->link.device[0].class = ATA_DEV_NONE;
6536 goto out_unlock;
6537 }
6538
6539 ap->link.device[0].class = res->ata_class;
6540 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
6541 ap->link.device[0].class = ATA_DEV_NONE;
6542
6543 out_unlock:
6544 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6545 LEAVE;
6546 }
6547
6548 /**
6549 * ipr_ata_post_internal - Cleanup after an internal command
6550 * @qc: ATA queued command
6551 *
6552 * Return value:
6553 * none
6554 **/
6555 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
6556 {
6557 struct ipr_sata_port *sata_port = qc->ap->private_data;
6558 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6559 struct ipr_cmnd *ipr_cmd;
6560 struct ipr_hrr_queue *hrrq;
6561 unsigned long flags;
6562
6563 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6564 while (ioa_cfg->in_reset_reload) {
6565 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6566 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6567 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6568 }
6569
6570 for_each_hrrq(hrrq, ioa_cfg) {
6571 spin_lock(&hrrq->_lock);
6572 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
6573 if (ipr_cmd->qc == qc) {
6574 ipr_device_reset(ioa_cfg, sata_port->res);
6575 break;
6576 }
6577 }
6578 spin_unlock(&hrrq->_lock);
6579 }
6580 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6581 }
6582
6583 /**
6584 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6585 * @regs: destination
6586 * @tf: source ATA taskfile
6587 *
6588 * Return value:
6589 * none
6590 **/
6591 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6592 struct ata_taskfile *tf)
6593 {
6594 regs->feature = tf->feature;
6595 regs->nsect = tf->nsect;
6596 regs->lbal = tf->lbal;
6597 regs->lbam = tf->lbam;
6598 regs->lbah = tf->lbah;
6599 regs->device = tf->device;
6600 regs->command = tf->command;
6601 regs->hob_feature = tf->hob_feature;
6602 regs->hob_nsect = tf->hob_nsect;
6603 regs->hob_lbal = tf->hob_lbal;
6604 regs->hob_lbam = tf->hob_lbam;
6605 regs->hob_lbah = tf->hob_lbah;
6606 regs->ctl = tf->ctl;
6607 }
6608
6609 /**
6610 * ipr_sata_done - done function for SATA commands
6611 * @ipr_cmd: ipr command struct
6612 *
6613 * This function is invoked by the interrupt handler for
6614 * ops generated by the SCSI mid-layer to SATA devices
6615 *
6616 * Return value:
6617 * none
6618 **/
6619 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6620 {
6621 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6622 struct ata_queued_cmd *qc = ipr_cmd->qc;
6623 struct ipr_sata_port *sata_port = qc->ap->private_data;
6624 struct ipr_resource_entry *res = sata_port->res;
6625 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6626
6627 spin_lock(&ipr_cmd->hrrq->_lock);
6628 if (ipr_cmd->ioa_cfg->sis64)
6629 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6630 sizeof(struct ipr_ioasa_gata));
6631 else
6632 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6633 sizeof(struct ipr_ioasa_gata));
6634 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6635
6636 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6637 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6638
6639 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6640 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6641 else
6642 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6643 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6644 spin_unlock(&ipr_cmd->hrrq->_lock);
6645 ata_qc_complete(qc);
6646 }
6647
6648 /**
6649 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6650 * @ipr_cmd: ipr command struct
6651 * @qc: ATA queued command
6652 *
6653 **/
6654 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6655 struct ata_queued_cmd *qc)
6656 {
6657 u32 ioadl_flags = 0;
6658 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6659 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64;
6660 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6661 int len = qc->nbytes;
6662 struct scatterlist *sg;
6663 unsigned int si;
6664 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6665
6666 if (len == 0)
6667 return;
6668
6669 if (qc->dma_dir == DMA_TO_DEVICE) {
6670 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6671 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6672 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6673 ioadl_flags = IPR_IOADL_FLAGS_READ;
6674
6675 ioarcb->data_transfer_length = cpu_to_be32(len);
6676 ioarcb->ioadl_len =
6677 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6678 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6679 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64));
6680
6681 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6682 ioadl64->flags = cpu_to_be32(ioadl_flags);
6683 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6684 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6685
6686 last_ioadl64 = ioadl64;
6687 ioadl64++;
6688 }
6689
6690 if (likely(last_ioadl64))
6691 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6692 }
6693
6694 /**
6695 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6696 * @ipr_cmd: ipr command struct
6697 * @qc: ATA queued command
6698 *
6699 **/
6700 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6701 struct ata_queued_cmd *qc)
6702 {
6703 u32 ioadl_flags = 0;
6704 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6705 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6706 struct ipr_ioadl_desc *last_ioadl = NULL;
6707 int len = qc->nbytes;
6708 struct scatterlist *sg;
6709 unsigned int si;
6710
6711 if (len == 0)
6712 return;
6713
6714 if (qc->dma_dir == DMA_TO_DEVICE) {
6715 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6716 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6717 ioarcb->data_transfer_length = cpu_to_be32(len);
6718 ioarcb->ioadl_len =
6719 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6720 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6721 ioadl_flags = IPR_IOADL_FLAGS_READ;
6722 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6723 ioarcb->read_ioadl_len =
6724 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6725 }
6726
6727 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6728 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6729 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6730
6731 last_ioadl = ioadl;
6732 ioadl++;
6733 }
6734
6735 if (likely(last_ioadl))
6736 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6737 }
6738
6739 /**
6740 * ipr_qc_defer - Get a free ipr_cmd
6741 * @qc: queued command
6742 *
6743 * Return value:
6744 * 0 if success
6745 **/
6746 static int ipr_qc_defer(struct ata_queued_cmd *qc)
6747 {
6748 struct ata_port *ap = qc->ap;
6749 struct ipr_sata_port *sata_port = ap->private_data;
6750 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6751 struct ipr_cmnd *ipr_cmd;
6752 struct ipr_hrr_queue *hrrq;
6753 int hrrq_id;
6754
6755 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6756 hrrq = &ioa_cfg->hrrq[hrrq_id];
6757
6758 qc->lldd_task = NULL;
6759 spin_lock(&hrrq->_lock);
6760 if (unlikely(hrrq->ioa_is_dead)) {
6761 spin_unlock(&hrrq->_lock);
6762 return 0;
6763 }
6764
6765 if (unlikely(!hrrq->allow_cmds)) {
6766 spin_unlock(&hrrq->_lock);
6767 return ATA_DEFER_LINK;
6768 }
6769
6770 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6771 if (ipr_cmd == NULL) {
6772 spin_unlock(&hrrq->_lock);
6773 return ATA_DEFER_LINK;
6774 }
6775
6776 qc->lldd_task = ipr_cmd;
6777 spin_unlock(&hrrq->_lock);
6778 return 0;
6779 }
6780
6781 /**
6782 * ipr_qc_issue - Issue a SATA qc to a device
6783 * @qc: queued command
6784 *
6785 * Return value:
6786 * 0 if success
6787 **/
6788 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6789 {
6790 struct ata_port *ap = qc->ap;
6791 struct ipr_sata_port *sata_port = ap->private_data;
6792 struct ipr_resource_entry *res = sata_port->res;
6793 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6794 struct ipr_cmnd *ipr_cmd;
6795 struct ipr_ioarcb *ioarcb;
6796 struct ipr_ioarcb_ata_regs *regs;
6797
6798 if (qc->lldd_task == NULL)
6799 ipr_qc_defer(qc);
6800
6801 ipr_cmd = qc->lldd_task;
6802 if (ipr_cmd == NULL)
6803 return AC_ERR_SYSTEM;
6804
6805 qc->lldd_task = NULL;
6806 spin_lock(&ipr_cmd->hrrq->_lock);
6807 if (unlikely(!ipr_cmd->hrrq->allow_cmds ||
6808 ipr_cmd->hrrq->ioa_is_dead)) {
6809 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6810 spin_unlock(&ipr_cmd->hrrq->_lock);
6811 return AC_ERR_SYSTEM;
6812 }
6813
6814 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
6815 ioarcb = &ipr_cmd->ioarcb;
6816
6817 if (ioa_cfg->sis64) {
6818 regs = &ipr_cmd->i.ata_ioadl.regs;
6819 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6820 } else
6821 regs = &ioarcb->u.add_data.u.regs;
6822
6823 memset(regs, 0, sizeof(*regs));
6824 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
6825
6826 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
6827 ipr_cmd->qc = qc;
6828 ipr_cmd->done = ipr_sata_done;
6829 ipr_cmd->ioarcb.res_handle = res->res_handle;
6830 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6831 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6832 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6833 ipr_cmd->dma_use_sg = qc->n_elem;
6834
6835 if (ioa_cfg->sis64)
6836 ipr_build_ata_ioadl64(ipr_cmd, qc);
6837 else
6838 ipr_build_ata_ioadl(ipr_cmd, qc);
6839
6840 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6841 ipr_copy_sata_tf(regs, &qc->tf);
6842 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
6843 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6844
6845 switch (qc->tf.protocol) {
6846 case ATA_PROT_NODATA:
6847 case ATA_PROT_PIO:
6848 break;
6849
6850 case ATA_PROT_DMA:
6851 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6852 break;
6853
6854 case ATAPI_PROT_PIO:
6855 case ATAPI_PROT_NODATA:
6856 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6857 break;
6858
6859 case ATAPI_PROT_DMA:
6860 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6861 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6862 break;
6863
6864 default:
6865 WARN_ON(1);
6866 spin_unlock(&ipr_cmd->hrrq->_lock);
6867 return AC_ERR_INVALID;
6868 }
6869
6870 ipr_send_command(ipr_cmd);
6871 spin_unlock(&ipr_cmd->hrrq->_lock);
6872
6873 return 0;
6874 }
6875
6876 /**
6877 * ipr_qc_fill_rtf - Read result TF
6878 * @qc: ATA queued command
6879 *
6880 * Return value:
6881 * true
6882 **/
6883 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6884 {
6885 struct ipr_sata_port *sata_port = qc->ap->private_data;
6886 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6887 struct ata_taskfile *tf = &qc->result_tf;
6888
6889 tf->feature = g->error;
6890 tf->nsect = g->nsect;
6891 tf->lbal = g->lbal;
6892 tf->lbam = g->lbam;
6893 tf->lbah = g->lbah;
6894 tf->device = g->device;
6895 tf->command = g->status;
6896 tf->hob_nsect = g->hob_nsect;
6897 tf->hob_lbal = g->hob_lbal;
6898 tf->hob_lbam = g->hob_lbam;
6899 tf->hob_lbah = g->hob_lbah;
6900
6901 return true;
6902 }
6903
6904 static struct ata_port_operations ipr_sata_ops = {
6905 .phy_reset = ipr_ata_phy_reset,
6906 .hardreset = ipr_sata_reset,
6907 .post_internal_cmd = ipr_ata_post_internal,
6908 .qc_prep = ata_noop_qc_prep,
6909 .qc_defer = ipr_qc_defer,
6910 .qc_issue = ipr_qc_issue,
6911 .qc_fill_rtf = ipr_qc_fill_rtf,
6912 .port_start = ata_sas_port_start,
6913 .port_stop = ata_sas_port_stop
6914 };
6915
6916 static struct ata_port_info sata_port_info = {
6917 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
6918 ATA_FLAG_SAS_HOST,
6919 .pio_mask = ATA_PIO4_ONLY,
6920 .mwdma_mask = ATA_MWDMA2,
6921 .udma_mask = ATA_UDMA6,
6922 .port_ops = &ipr_sata_ops
6923 };
6924
6925 #ifdef CONFIG_PPC_PSERIES
6926 static const u16 ipr_blocked_processors[] = {
6927 PVR_NORTHSTAR,
6928 PVR_PULSAR,
6929 PVR_POWER4,
6930 PVR_ICESTAR,
6931 PVR_SSTAR,
6932 PVR_POWER4p,
6933 PVR_630,
6934 PVR_630p
6935 };
6936
6937 /**
6938 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6939 * @ioa_cfg: ioa cfg struct
6940 *
6941 * Adapters that use Gemstone revision < 3.1 do not work reliably on
6942 * certain pSeries hardware. This function determines if the given
6943 * adapter is in one of these confgurations or not.
6944 *
6945 * Return value:
6946 * 1 if adapter is not supported / 0 if adapter is supported
6947 **/
6948 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6949 {
6950 int i;
6951
6952 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6953 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) {
6954 if (pvr_version_is(ipr_blocked_processors[i]))
6955 return 1;
6956 }
6957 }
6958 return 0;
6959 }
6960 #else
6961 #define ipr_invalid_adapter(ioa_cfg) 0
6962 #endif
6963
6964 /**
6965 * ipr_ioa_bringdown_done - IOA bring down completion.
6966 * @ipr_cmd: ipr command struct
6967 *
6968 * This function processes the completion of an adapter bring down.
6969 * It wakes any reset sleepers.
6970 *
6971 * Return value:
6972 * IPR_RC_JOB_RETURN
6973 **/
6974 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6975 {
6976 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6977 int i;
6978
6979 ENTER;
6980 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
6981 ipr_trace;
6982 spin_unlock_irq(ioa_cfg->host->host_lock);
6983 scsi_unblock_requests(ioa_cfg->host);
6984 spin_lock_irq(ioa_cfg->host->host_lock);
6985 }
6986
6987 ioa_cfg->in_reset_reload = 0;
6988 ioa_cfg->reset_retries = 0;
6989 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
6990 spin_lock(&ioa_cfg->hrrq[i]._lock);
6991 ioa_cfg->hrrq[i].ioa_is_dead = 1;
6992 spin_unlock(&ioa_cfg->hrrq[i]._lock);
6993 }
6994 wmb();
6995
6996 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6997 wake_up_all(&ioa_cfg->reset_wait_q);
6998 LEAVE;
6999
7000 return IPR_RC_JOB_RETURN;
7001 }
7002
7003 /**
7004 * ipr_ioa_reset_done - IOA reset completion.
7005 * @ipr_cmd: ipr command struct
7006 *
7007 * This function processes the completion of an adapter reset.
7008 * It schedules any necessary mid-layer add/removes and
7009 * wakes any reset sleepers.
7010 *
7011 * Return value:
7012 * IPR_RC_JOB_RETURN
7013 **/
7014 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
7015 {
7016 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7017 struct ipr_resource_entry *res;
7018 struct ipr_hostrcb *hostrcb, *temp;
7019 int i = 0, j;
7020
7021 ENTER;
7022 ioa_cfg->in_reset_reload = 0;
7023 for (j = 0; j < ioa_cfg->hrrq_num; j++) {
7024 spin_lock(&ioa_cfg->hrrq[j]._lock);
7025 ioa_cfg->hrrq[j].allow_cmds = 1;
7026 spin_unlock(&ioa_cfg->hrrq[j]._lock);
7027 }
7028 wmb();
7029 ioa_cfg->reset_cmd = NULL;
7030 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
7031
7032 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
7033 if (res->add_to_ml || res->del_from_ml) {
7034 ipr_trace;
7035 break;
7036 }
7037 }
7038 schedule_work(&ioa_cfg->work_q);
7039
7040 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
7041 list_del(&hostrcb->queue);
7042 if (i++ < IPR_NUM_LOG_HCAMS)
7043 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
7044 else
7045 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
7046 }
7047
7048 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
7049 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
7050
7051 ioa_cfg->reset_retries = 0;
7052 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7053 wake_up_all(&ioa_cfg->reset_wait_q);
7054
7055 spin_unlock(ioa_cfg->host->host_lock);
7056 scsi_unblock_requests(ioa_cfg->host);
7057 spin_lock(ioa_cfg->host->host_lock);
7058
7059 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
7060 scsi_block_requests(ioa_cfg->host);
7061
7062 schedule_work(&ioa_cfg->work_q);
7063 LEAVE;
7064 return IPR_RC_JOB_RETURN;
7065 }
7066
7067 /**
7068 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
7069 * @supported_dev: supported device struct
7070 * @vpids: vendor product id struct
7071 *
7072 * Return value:
7073 * none
7074 **/
7075 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
7076 struct ipr_std_inq_vpids *vpids)
7077 {
7078 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
7079 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
7080 supported_dev->num_records = 1;
7081 supported_dev->data_length =
7082 cpu_to_be16(sizeof(struct ipr_supported_device));
7083 supported_dev->reserved = 0;
7084 }
7085
7086 /**
7087 * ipr_set_supported_devs - Send Set Supported Devices for a device
7088 * @ipr_cmd: ipr command struct
7089 *
7090 * This function sends a Set Supported Devices to the adapter
7091 *
7092 * Return value:
7093 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7094 **/
7095 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
7096 {
7097 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7098 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
7099 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7100 struct ipr_resource_entry *res = ipr_cmd->u.res;
7101
7102 ipr_cmd->job_step = ipr_ioa_reset_done;
7103
7104 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
7105 if (!ipr_is_scsi_disk(res))
7106 continue;
7107
7108 ipr_cmd->u.res = res;
7109 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
7110
7111 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7112 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7113 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7114
7115 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
7116 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
7117 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
7118 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
7119
7120 ipr_init_ioadl(ipr_cmd,
7121 ioa_cfg->vpd_cbs_dma +
7122 offsetof(struct ipr_misc_cbs, supp_dev),
7123 sizeof(struct ipr_supported_device),
7124 IPR_IOADL_FLAGS_WRITE_LAST);
7125
7126 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7127 IPR_SET_SUP_DEVICE_TIMEOUT);
7128
7129 if (!ioa_cfg->sis64)
7130 ipr_cmd->job_step = ipr_set_supported_devs;
7131 LEAVE;
7132 return IPR_RC_JOB_RETURN;
7133 }
7134
7135 LEAVE;
7136 return IPR_RC_JOB_CONTINUE;
7137 }
7138
7139 /**
7140 * ipr_get_mode_page - Locate specified mode page
7141 * @mode_pages: mode page buffer
7142 * @page_code: page code to find
7143 * @len: minimum required length for mode page
7144 *
7145 * Return value:
7146 * pointer to mode page / NULL on failure
7147 **/
7148 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
7149 u32 page_code, u32 len)
7150 {
7151 struct ipr_mode_page_hdr *mode_hdr;
7152 u32 page_length;
7153 u32 length;
7154
7155 if (!mode_pages || (mode_pages->hdr.length == 0))
7156 return NULL;
7157
7158 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
7159 mode_hdr = (struct ipr_mode_page_hdr *)
7160 (mode_pages->data + mode_pages->hdr.block_desc_len);
7161
7162 while (length) {
7163 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
7164 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
7165 return mode_hdr;
7166 break;
7167 } else {
7168 page_length = (sizeof(struct ipr_mode_page_hdr) +
7169 mode_hdr->page_length);
7170 length -= page_length;
7171 mode_hdr = (struct ipr_mode_page_hdr *)
7172 ((unsigned long)mode_hdr + page_length);
7173 }
7174 }
7175 return NULL;
7176 }
7177
7178 /**
7179 * ipr_check_term_power - Check for term power errors
7180 * @ioa_cfg: ioa config struct
7181 * @mode_pages: IOAFP mode pages buffer
7182 *
7183 * Check the IOAFP's mode page 28 for term power errors
7184 *
7185 * Return value:
7186 * nothing
7187 **/
7188 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
7189 struct ipr_mode_pages *mode_pages)
7190 {
7191 int i;
7192 int entry_length;
7193 struct ipr_dev_bus_entry *bus;
7194 struct ipr_mode_page28 *mode_page;
7195
7196 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7197 sizeof(struct ipr_mode_page28));
7198
7199 entry_length = mode_page->entry_length;
7200
7201 bus = mode_page->bus;
7202
7203 for (i = 0; i < mode_page->num_entries; i++) {
7204 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
7205 dev_err(&ioa_cfg->pdev->dev,
7206 "Term power is absent on scsi bus %d\n",
7207 bus->res_addr.bus);
7208 }
7209
7210 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
7211 }
7212 }
7213
7214 /**
7215 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
7216 * @ioa_cfg: ioa config struct
7217 *
7218 * Looks through the config table checking for SES devices. If
7219 * the SES device is in the SES table indicating a maximum SCSI
7220 * bus speed, the speed is limited for the bus.
7221 *
7222 * Return value:
7223 * none
7224 **/
7225 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
7226 {
7227 u32 max_xfer_rate;
7228 int i;
7229
7230 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7231 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
7232 ioa_cfg->bus_attr[i].bus_width);
7233
7234 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
7235 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
7236 }
7237 }
7238
7239 /**
7240 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
7241 * @ioa_cfg: ioa config struct
7242 * @mode_pages: mode page 28 buffer
7243 *
7244 * Updates mode page 28 based on driver configuration
7245 *
7246 * Return value:
7247 * none
7248 **/
7249 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
7250 struct ipr_mode_pages *mode_pages)
7251 {
7252 int i, entry_length;
7253 struct ipr_dev_bus_entry *bus;
7254 struct ipr_bus_attributes *bus_attr;
7255 struct ipr_mode_page28 *mode_page;
7256
7257 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7258 sizeof(struct ipr_mode_page28));
7259
7260 entry_length = mode_page->entry_length;
7261
7262 /* Loop for each device bus entry */
7263 for (i = 0, bus = mode_page->bus;
7264 i < mode_page->num_entries;
7265 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
7266 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
7267 dev_err(&ioa_cfg->pdev->dev,
7268 "Invalid resource address reported: 0x%08X\n",
7269 IPR_GET_PHYS_LOC(bus->res_addr));
7270 continue;
7271 }
7272
7273 bus_attr = &ioa_cfg->bus_attr[i];
7274 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
7275 bus->bus_width = bus_attr->bus_width;
7276 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
7277 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
7278 if (bus_attr->qas_enabled)
7279 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
7280 else
7281 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
7282 }
7283 }
7284
7285 /**
7286 * ipr_build_mode_select - Build a mode select command
7287 * @ipr_cmd: ipr command struct
7288 * @res_handle: resource handle to send command to
7289 * @parm: Byte 2 of Mode Sense command
7290 * @dma_addr: DMA buffer address
7291 * @xfer_len: data transfer length
7292 *
7293 * Return value:
7294 * none
7295 **/
7296 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
7297 __be32 res_handle, u8 parm,
7298 dma_addr_t dma_addr, u8 xfer_len)
7299 {
7300 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7301
7302 ioarcb->res_handle = res_handle;
7303 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7304 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7305 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
7306 ioarcb->cmd_pkt.cdb[1] = parm;
7307 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7308
7309 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
7310 }
7311
7312 /**
7313 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
7314 * @ipr_cmd: ipr command struct
7315 *
7316 * This function sets up the SCSI bus attributes and sends
7317 * a Mode Select for Page 28 to activate them.
7318 *
7319 * Return value:
7320 * IPR_RC_JOB_RETURN
7321 **/
7322 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
7323 {
7324 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7325 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7326 int length;
7327
7328 ENTER;
7329 ipr_scsi_bus_speed_limit(ioa_cfg);
7330 ipr_check_term_power(ioa_cfg, mode_pages);
7331 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
7332 length = mode_pages->hdr.length + 1;
7333 mode_pages->hdr.length = 0;
7334
7335 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7336 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7337 length);
7338
7339 ipr_cmd->job_step = ipr_set_supported_devs;
7340 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7341 struct ipr_resource_entry, queue);
7342 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7343
7344 LEAVE;
7345 return IPR_RC_JOB_RETURN;
7346 }
7347
7348 /**
7349 * ipr_build_mode_sense - Builds a mode sense command
7350 * @ipr_cmd: ipr command struct
7351 * @res: resource entry struct
7352 * @parm: Byte 2 of mode sense command
7353 * @dma_addr: DMA address of mode sense buffer
7354 * @xfer_len: Size of DMA buffer
7355 *
7356 * Return value:
7357 * none
7358 **/
7359 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
7360 __be32 res_handle,
7361 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
7362 {
7363 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7364
7365 ioarcb->res_handle = res_handle;
7366 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
7367 ioarcb->cmd_pkt.cdb[2] = parm;
7368 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7369 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7370
7371 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7372 }
7373
7374 /**
7375 * ipr_reset_cmd_failed - Handle failure of IOA reset command
7376 * @ipr_cmd: ipr command struct
7377 *
7378 * This function handles the failure of an IOA bringup command.
7379 *
7380 * Return value:
7381 * IPR_RC_JOB_RETURN
7382 **/
7383 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
7384 {
7385 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7386 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7387
7388 dev_err(&ioa_cfg->pdev->dev,
7389 "0x%02X failed with IOASC: 0x%08X\n",
7390 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
7391
7392 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7393 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7394 return IPR_RC_JOB_RETURN;
7395 }
7396
7397 /**
7398 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
7399 * @ipr_cmd: ipr command struct
7400 *
7401 * This function handles the failure of a Mode Sense to the IOAFP.
7402 * Some adapters do not handle all mode pages.
7403 *
7404 * Return value:
7405 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7406 **/
7407 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
7408 {
7409 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7410 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7411
7412 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7413 ipr_cmd->job_step = ipr_set_supported_devs;
7414 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7415 struct ipr_resource_entry, queue);
7416 return IPR_RC_JOB_CONTINUE;
7417 }
7418
7419 return ipr_reset_cmd_failed(ipr_cmd);
7420 }
7421
7422 /**
7423 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
7424 * @ipr_cmd: ipr command struct
7425 *
7426 * This function send a Page 28 mode sense to the IOA to
7427 * retrieve SCSI bus attributes.
7428 *
7429 * Return value:
7430 * IPR_RC_JOB_RETURN
7431 **/
7432 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
7433 {
7434 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7435
7436 ENTER;
7437 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7438 0x28, ioa_cfg->vpd_cbs_dma +
7439 offsetof(struct ipr_misc_cbs, mode_pages),
7440 sizeof(struct ipr_mode_pages));
7441
7442 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
7443 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
7444
7445 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7446
7447 LEAVE;
7448 return IPR_RC_JOB_RETURN;
7449 }
7450
7451 /**
7452 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
7453 * @ipr_cmd: ipr command struct
7454 *
7455 * This function enables dual IOA RAID support if possible.
7456 *
7457 * Return value:
7458 * IPR_RC_JOB_RETURN
7459 **/
7460 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
7461 {
7462 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7463 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7464 struct ipr_mode_page24 *mode_page;
7465 int length;
7466
7467 ENTER;
7468 mode_page = ipr_get_mode_page(mode_pages, 0x24,
7469 sizeof(struct ipr_mode_page24));
7470
7471 if (mode_page)
7472 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
7473
7474 length = mode_pages->hdr.length + 1;
7475 mode_pages->hdr.length = 0;
7476
7477 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7478 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7479 length);
7480
7481 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7482 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7483
7484 LEAVE;
7485 return IPR_RC_JOB_RETURN;
7486 }
7487
7488 /**
7489 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
7490 * @ipr_cmd: ipr command struct
7491 *
7492 * This function handles the failure of a Mode Sense to the IOAFP.
7493 * Some adapters do not handle all mode pages.
7494 *
7495 * Return value:
7496 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7497 **/
7498 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
7499 {
7500 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7501
7502 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7503 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7504 return IPR_RC_JOB_CONTINUE;
7505 }
7506
7507 return ipr_reset_cmd_failed(ipr_cmd);
7508 }
7509
7510 /**
7511 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
7512 * @ipr_cmd: ipr command struct
7513 *
7514 * This function send a mode sense to the IOA to retrieve
7515 * the IOA Advanced Function Control mode page.
7516 *
7517 * Return value:
7518 * IPR_RC_JOB_RETURN
7519 **/
7520 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
7521 {
7522 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7523
7524 ENTER;
7525 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7526 0x24, ioa_cfg->vpd_cbs_dma +
7527 offsetof(struct ipr_misc_cbs, mode_pages),
7528 sizeof(struct ipr_mode_pages));
7529
7530 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
7531 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
7532
7533 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7534
7535 LEAVE;
7536 return IPR_RC_JOB_RETURN;
7537 }
7538
7539 /**
7540 * ipr_init_res_table - Initialize the resource table
7541 * @ipr_cmd: ipr command struct
7542 *
7543 * This function looks through the existing resource table, comparing
7544 * it with the config table. This function will take care of old/new
7545 * devices and schedule adding/removing them from the mid-layer
7546 * as appropriate.
7547 *
7548 * Return value:
7549 * IPR_RC_JOB_CONTINUE
7550 **/
7551 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
7552 {
7553 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7554 struct ipr_resource_entry *res, *temp;
7555 struct ipr_config_table_entry_wrapper cfgtew;
7556 int entries, found, flag, i;
7557 LIST_HEAD(old_res);
7558
7559 ENTER;
7560 if (ioa_cfg->sis64)
7561 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
7562 else
7563 flag = ioa_cfg->u.cfg_table->hdr.flags;
7564
7565 if (flag & IPR_UCODE_DOWNLOAD_REQ)
7566 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
7567
7568 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
7569 list_move_tail(&res->queue, &old_res);
7570
7571 if (ioa_cfg->sis64)
7572 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
7573 else
7574 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
7575
7576 for (i = 0; i < entries; i++) {
7577 if (ioa_cfg->sis64)
7578 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
7579 else
7580 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
7581 found = 0;
7582
7583 list_for_each_entry_safe(res, temp, &old_res, queue) {
7584 if (ipr_is_same_device(res, &cfgtew)) {
7585 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7586 found = 1;
7587 break;
7588 }
7589 }
7590
7591 if (!found) {
7592 if (list_empty(&ioa_cfg->free_res_q)) {
7593 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
7594 break;
7595 }
7596
7597 found = 1;
7598 res = list_entry(ioa_cfg->free_res_q.next,
7599 struct ipr_resource_entry, queue);
7600 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7601 ipr_init_res_entry(res, &cfgtew);
7602 res->add_to_ml = 1;
7603 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
7604 res->sdev->allow_restart = 1;
7605
7606 if (found)
7607 ipr_update_res_entry(res, &cfgtew);
7608 }
7609
7610 list_for_each_entry_safe(res, temp, &old_res, queue) {
7611 if (res->sdev) {
7612 res->del_from_ml = 1;
7613 res->res_handle = IPR_INVALID_RES_HANDLE;
7614 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7615 }
7616 }
7617
7618 list_for_each_entry_safe(res, temp, &old_res, queue) {
7619 ipr_clear_res_target(res);
7620 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
7621 }
7622
7623 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7624 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
7625 else
7626 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7627
7628 LEAVE;
7629 return IPR_RC_JOB_CONTINUE;
7630 }
7631
7632 /**
7633 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
7634 * @ipr_cmd: ipr command struct
7635 *
7636 * This function sends a Query IOA Configuration command
7637 * to the adapter to retrieve the IOA configuration table.
7638 *
7639 * Return value:
7640 * IPR_RC_JOB_RETURN
7641 **/
7642 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
7643 {
7644 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7645 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7646 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7647 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7648
7649 ENTER;
7650 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7651 ioa_cfg->dual_raid = 1;
7652 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7653 ucode_vpd->major_release, ucode_vpd->card_type,
7654 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7655 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7656 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7657
7658 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7659 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7660 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7661 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7662
7663 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7664 IPR_IOADL_FLAGS_READ_LAST);
7665
7666 ipr_cmd->job_step = ipr_init_res_table;
7667
7668 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7669
7670 LEAVE;
7671 return IPR_RC_JOB_RETURN;
7672 }
7673
7674 static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd)
7675 {
7676 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7677
7678 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT)
7679 return IPR_RC_JOB_CONTINUE;
7680
7681 return ipr_reset_cmd_failed(ipr_cmd);
7682 }
7683
7684 static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd,
7685 __be32 res_handle, u8 sa_code)
7686 {
7687 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7688
7689 ioarcb->res_handle = res_handle;
7690 ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION;
7691 ioarcb->cmd_pkt.cdb[1] = sa_code;
7692 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7693 }
7694
7695 /**
7696 * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service
7697 * action
7698 *
7699 * Return value:
7700 * none
7701 **/
7702 static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd)
7703 {
7704 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7705 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7706 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7707
7708 ENTER;
7709
7710 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7711
7712 if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) {
7713 ipr_build_ioa_service_action(ipr_cmd,
7714 cpu_to_be32(IPR_IOA_RES_HANDLE),
7715 IPR_IOA_SA_CHANGE_CACHE_PARAMS);
7716
7717 ioarcb->cmd_pkt.cdb[2] = 0x40;
7718
7719 ipr_cmd->job_step_failed = ipr_ioa_service_action_failed;
7720 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7721 IPR_SET_SUP_DEVICE_TIMEOUT);
7722
7723 LEAVE;
7724 return IPR_RC_JOB_RETURN;
7725 }
7726
7727 LEAVE;
7728 return IPR_RC_JOB_CONTINUE;
7729 }
7730
7731 /**
7732 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7733 * @ipr_cmd: ipr command struct
7734 *
7735 * This utility function sends an inquiry to the adapter.
7736 *
7737 * Return value:
7738 * none
7739 **/
7740 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7741 dma_addr_t dma_addr, u8 xfer_len)
7742 {
7743 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7744
7745 ENTER;
7746 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7747 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7748
7749 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7750 ioarcb->cmd_pkt.cdb[1] = flags;
7751 ioarcb->cmd_pkt.cdb[2] = page;
7752 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7753
7754 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7755
7756 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7757 LEAVE;
7758 }
7759
7760 /**
7761 * ipr_inquiry_page_supported - Is the given inquiry page supported
7762 * @page0: inquiry page 0 buffer
7763 * @page: page code.
7764 *
7765 * This function determines if the specified inquiry page is supported.
7766 *
7767 * Return value:
7768 * 1 if page is supported / 0 if not
7769 **/
7770 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7771 {
7772 int i;
7773
7774 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7775 if (page0->page[i] == page)
7776 return 1;
7777
7778 return 0;
7779 }
7780
7781 /**
7782 * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter.
7783 * @ipr_cmd: ipr command struct
7784 *
7785 * This function sends a Page 0xC4 inquiry to the adapter
7786 * to retrieve software VPD information.
7787 *
7788 * Return value:
7789 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7790 **/
7791 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd)
7792 {
7793 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7794 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7795 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7796
7797 ENTER;
7798 ipr_cmd->job_step = ipr_ioafp_set_caching_parameters;
7799 memset(pageC4, 0, sizeof(*pageC4));
7800
7801 if (ipr_inquiry_page_supported(page0, 0xC4)) {
7802 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4,
7803 (ioa_cfg->vpd_cbs_dma
7804 + offsetof(struct ipr_misc_cbs,
7805 pageC4_data)),
7806 sizeof(struct ipr_inquiry_pageC4));
7807 return IPR_RC_JOB_RETURN;
7808 }
7809
7810 LEAVE;
7811 return IPR_RC_JOB_CONTINUE;
7812 }
7813
7814 /**
7815 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7816 * @ipr_cmd: ipr command struct
7817 *
7818 * This function sends a Page 0xD0 inquiry to the adapter
7819 * to retrieve adapter capabilities.
7820 *
7821 * Return value:
7822 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7823 **/
7824 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7825 {
7826 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7827 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7828 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7829
7830 ENTER;
7831 ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry;
7832 memset(cap, 0, sizeof(*cap));
7833
7834 if (ipr_inquiry_page_supported(page0, 0xD0)) {
7835 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7836 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7837 sizeof(struct ipr_inquiry_cap));
7838 return IPR_RC_JOB_RETURN;
7839 }
7840
7841 LEAVE;
7842 return IPR_RC_JOB_CONTINUE;
7843 }
7844
7845 /**
7846 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7847 * @ipr_cmd: ipr command struct
7848 *
7849 * This function sends a Page 3 inquiry to the adapter
7850 * to retrieve software VPD information.
7851 *
7852 * Return value:
7853 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7854 **/
7855 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7856 {
7857 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7858
7859 ENTER;
7860
7861 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7862
7863 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7864 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7865 sizeof(struct ipr_inquiry_page3));
7866
7867 LEAVE;
7868 return IPR_RC_JOB_RETURN;
7869 }
7870
7871 /**
7872 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7873 * @ipr_cmd: ipr command struct
7874 *
7875 * This function sends a Page 0 inquiry to the adapter
7876 * to retrieve supported inquiry pages.
7877 *
7878 * Return value:
7879 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7880 **/
7881 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7882 {
7883 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7884 char type[5];
7885
7886 ENTER;
7887
7888 /* Grab the type out of the VPD and store it away */
7889 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7890 type[4] = '\0';
7891 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7892
7893 if (ipr_invalid_adapter(ioa_cfg)) {
7894 dev_err(&ioa_cfg->pdev->dev,
7895 "Adapter not supported in this hardware configuration.\n");
7896
7897 if (!ipr_testmode) {
7898 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
7899 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7900 list_add_tail(&ipr_cmd->queue,
7901 &ioa_cfg->hrrq->hrrq_free_q);
7902 return IPR_RC_JOB_RETURN;
7903 }
7904 }
7905
7906 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
7907
7908 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7909 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7910 sizeof(struct ipr_inquiry_page0));
7911
7912 LEAVE;
7913 return IPR_RC_JOB_RETURN;
7914 }
7915
7916 /**
7917 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7918 * @ipr_cmd: ipr command struct
7919 *
7920 * This function sends a standard inquiry to the adapter.
7921 *
7922 * Return value:
7923 * IPR_RC_JOB_RETURN
7924 **/
7925 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7926 {
7927 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7928
7929 ENTER;
7930 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
7931
7932 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7933 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7934 sizeof(struct ipr_ioa_vpd));
7935
7936 LEAVE;
7937 return IPR_RC_JOB_RETURN;
7938 }
7939
7940 /**
7941 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
7942 * @ipr_cmd: ipr command struct
7943 *
7944 * This function send an Identify Host Request Response Queue
7945 * command to establish the HRRQ with the adapter.
7946 *
7947 * Return value:
7948 * IPR_RC_JOB_RETURN
7949 **/
7950 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
7951 {
7952 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7953 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7954 struct ipr_hrr_queue *hrrq;
7955
7956 ENTER;
7957 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7958 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7959
7960 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) {
7961 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index];
7962
7963 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7964 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7965
7966 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7967 if (ioa_cfg->sis64)
7968 ioarcb->cmd_pkt.cdb[1] = 0x1;
7969
7970 if (ioa_cfg->nvectors == 1)
7971 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE;
7972 else
7973 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE;
7974
7975 ioarcb->cmd_pkt.cdb[2] =
7976 ((u64) hrrq->host_rrq_dma >> 24) & 0xff;
7977 ioarcb->cmd_pkt.cdb[3] =
7978 ((u64) hrrq->host_rrq_dma >> 16) & 0xff;
7979 ioarcb->cmd_pkt.cdb[4] =
7980 ((u64) hrrq->host_rrq_dma >> 8) & 0xff;
7981 ioarcb->cmd_pkt.cdb[5] =
7982 ((u64) hrrq->host_rrq_dma) & 0xff;
7983 ioarcb->cmd_pkt.cdb[7] =
7984 ((sizeof(u32) * hrrq->size) >> 8) & 0xff;
7985 ioarcb->cmd_pkt.cdb[8] =
7986 (sizeof(u32) * hrrq->size) & 0xff;
7987
7988 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
7989 ioarcb->cmd_pkt.cdb[9] =
7990 ioa_cfg->identify_hrrq_index;
7991
7992 if (ioa_cfg->sis64) {
7993 ioarcb->cmd_pkt.cdb[10] =
7994 ((u64) hrrq->host_rrq_dma >> 56) & 0xff;
7995 ioarcb->cmd_pkt.cdb[11] =
7996 ((u64) hrrq->host_rrq_dma >> 48) & 0xff;
7997 ioarcb->cmd_pkt.cdb[12] =
7998 ((u64) hrrq->host_rrq_dma >> 40) & 0xff;
7999 ioarcb->cmd_pkt.cdb[13] =
8000 ((u64) hrrq->host_rrq_dma >> 32) & 0xff;
8001 }
8002
8003 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
8004 ioarcb->cmd_pkt.cdb[14] =
8005 ioa_cfg->identify_hrrq_index;
8006
8007 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8008 IPR_INTERNAL_TIMEOUT);
8009
8010 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num)
8011 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8012
8013 LEAVE;
8014 return IPR_RC_JOB_RETURN;
8015 }
8016
8017 LEAVE;
8018 return IPR_RC_JOB_CONTINUE;
8019 }
8020
8021 /**
8022 * ipr_reset_timer_done - Adapter reset timer function
8023 * @ipr_cmd: ipr command struct
8024 *
8025 * Description: This function is used in adapter reset processing
8026 * for timing events. If the reset_cmd pointer in the IOA
8027 * config struct is not this adapter's we are doing nested
8028 * resets and fail_all_ops will take care of freeing the
8029 * command block.
8030 *
8031 * Return value:
8032 * none
8033 **/
8034 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
8035 {
8036 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8037 unsigned long lock_flags = 0;
8038
8039 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8040
8041 if (ioa_cfg->reset_cmd == ipr_cmd) {
8042 list_del(&ipr_cmd->queue);
8043 ipr_cmd->done(ipr_cmd);
8044 }
8045
8046 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8047 }
8048
8049 /**
8050 * ipr_reset_start_timer - Start a timer for adapter reset job
8051 * @ipr_cmd: ipr command struct
8052 * @timeout: timeout value
8053 *
8054 * Description: This function is used in adapter reset processing
8055 * for timing events. If the reset_cmd pointer in the IOA
8056 * config struct is not this adapter's we are doing nested
8057 * resets and fail_all_ops will take care of freeing the
8058 * command block.
8059 *
8060 * Return value:
8061 * none
8062 **/
8063 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
8064 unsigned long timeout)
8065 {
8066
8067 ENTER;
8068 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8069 ipr_cmd->done = ipr_reset_ioa_job;
8070
8071 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8072 ipr_cmd->timer.expires = jiffies + timeout;
8073 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
8074 add_timer(&ipr_cmd->timer);
8075 }
8076
8077 /**
8078 * ipr_init_ioa_mem - Initialize ioa_cfg control block
8079 * @ioa_cfg: ioa cfg struct
8080 *
8081 * Return value:
8082 * nothing
8083 **/
8084 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
8085 {
8086 struct ipr_hrr_queue *hrrq;
8087
8088 for_each_hrrq(hrrq, ioa_cfg) {
8089 spin_lock(&hrrq->_lock);
8090 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size);
8091
8092 /* Initialize Host RRQ pointers */
8093 hrrq->hrrq_start = hrrq->host_rrq;
8094 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1];
8095 hrrq->hrrq_curr = hrrq->hrrq_start;
8096 hrrq->toggle_bit = 1;
8097 spin_unlock(&hrrq->_lock);
8098 }
8099 wmb();
8100
8101 ioa_cfg->identify_hrrq_index = 0;
8102 if (ioa_cfg->hrrq_num == 1)
8103 atomic_set(&ioa_cfg->hrrq_index, 0);
8104 else
8105 atomic_set(&ioa_cfg->hrrq_index, 1);
8106
8107 /* Zero out config table */
8108 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
8109 }
8110
8111 /**
8112 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
8113 * @ipr_cmd: ipr command struct
8114 *
8115 * Return value:
8116 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8117 **/
8118 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
8119 {
8120 unsigned long stage, stage_time;
8121 u32 feedback;
8122 volatile u32 int_reg;
8123 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8124 u64 maskval = 0;
8125
8126 feedback = readl(ioa_cfg->regs.init_feedback_reg);
8127 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
8128 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
8129
8130 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
8131
8132 /* sanity check the stage_time value */
8133 if (stage_time == 0)
8134 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
8135 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
8136 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
8137 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
8138 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
8139
8140 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
8141 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
8142 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8143 stage_time = ioa_cfg->transop_timeout;
8144 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8145 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
8146 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8147 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8148 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8149 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8150 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
8151 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
8152 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8153 return IPR_RC_JOB_CONTINUE;
8154 }
8155 }
8156
8157 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8158 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
8159 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8160 ipr_cmd->done = ipr_reset_ioa_job;
8161 add_timer(&ipr_cmd->timer);
8162
8163 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8164
8165 return IPR_RC_JOB_RETURN;
8166 }
8167
8168 /**
8169 * ipr_reset_enable_ioa - Enable the IOA following a reset.
8170 * @ipr_cmd: ipr command struct
8171 *
8172 * This function reinitializes some control blocks and
8173 * enables destructive diagnostics on the adapter.
8174 *
8175 * Return value:
8176 * IPR_RC_JOB_RETURN
8177 **/
8178 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
8179 {
8180 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8181 volatile u32 int_reg;
8182 volatile u64 maskval;
8183 int i;
8184
8185 ENTER;
8186 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8187 ipr_init_ioa_mem(ioa_cfg);
8188
8189 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8190 spin_lock(&ioa_cfg->hrrq[i]._lock);
8191 ioa_cfg->hrrq[i].allow_interrupts = 1;
8192 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8193 }
8194 wmb();
8195 if (ioa_cfg->sis64) {
8196 /* Set the adapter to the correct endian mode. */
8197 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8198 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8199 }
8200
8201 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8202
8203 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8204 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
8205 ioa_cfg->regs.clr_interrupt_mask_reg32);
8206 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8207 return IPR_RC_JOB_CONTINUE;
8208 }
8209
8210 /* Enable destructive diagnostics on IOA */
8211 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
8212
8213 if (ioa_cfg->sis64) {
8214 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8215 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
8216 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
8217 } else
8218 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
8219
8220 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8221
8222 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
8223
8224 if (ioa_cfg->sis64) {
8225 ipr_cmd->job_step = ipr_reset_next_stage;
8226 return IPR_RC_JOB_CONTINUE;
8227 }
8228
8229 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8230 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
8231 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8232 ipr_cmd->done = ipr_reset_ioa_job;
8233 add_timer(&ipr_cmd->timer);
8234 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8235
8236 LEAVE;
8237 return IPR_RC_JOB_RETURN;
8238 }
8239
8240 /**
8241 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
8242 * @ipr_cmd: ipr command struct
8243 *
8244 * This function is invoked when an adapter dump has run out
8245 * of processing time.
8246 *
8247 * Return value:
8248 * IPR_RC_JOB_CONTINUE
8249 **/
8250 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
8251 {
8252 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8253
8254 if (ioa_cfg->sdt_state == GET_DUMP)
8255 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8256 else if (ioa_cfg->sdt_state == READ_DUMP)
8257 ioa_cfg->sdt_state = ABORT_DUMP;
8258
8259 ioa_cfg->dump_timeout = 1;
8260 ipr_cmd->job_step = ipr_reset_alert;
8261
8262 return IPR_RC_JOB_CONTINUE;
8263 }
8264
8265 /**
8266 * ipr_unit_check_no_data - Log a unit check/no data error log
8267 * @ioa_cfg: ioa config struct
8268 *
8269 * Logs an error indicating the adapter unit checked, but for some
8270 * reason, we were unable to fetch the unit check buffer.
8271 *
8272 * Return value:
8273 * nothing
8274 **/
8275 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
8276 {
8277 ioa_cfg->errors_logged++;
8278 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
8279 }
8280
8281 /**
8282 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
8283 * @ioa_cfg: ioa config struct
8284 *
8285 * Fetches the unit check buffer from the adapter by clocking the data
8286 * through the mailbox register.
8287 *
8288 * Return value:
8289 * nothing
8290 **/
8291 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
8292 {
8293 unsigned long mailbox;
8294 struct ipr_hostrcb *hostrcb;
8295 struct ipr_uc_sdt sdt;
8296 int rc, length;
8297 u32 ioasc;
8298
8299 mailbox = readl(ioa_cfg->ioa_mailbox);
8300
8301 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
8302 ipr_unit_check_no_data(ioa_cfg);
8303 return;
8304 }
8305
8306 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
8307 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
8308 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
8309
8310 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
8311 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
8312 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
8313 ipr_unit_check_no_data(ioa_cfg);
8314 return;
8315 }
8316
8317 /* Find length of the first sdt entry (UC buffer) */
8318 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
8319 length = be32_to_cpu(sdt.entry[0].end_token);
8320 else
8321 length = (be32_to_cpu(sdt.entry[0].end_token) -
8322 be32_to_cpu(sdt.entry[0].start_token)) &
8323 IPR_FMT2_MBX_ADDR_MASK;
8324
8325 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
8326 struct ipr_hostrcb, queue);
8327 list_del(&hostrcb->queue);
8328 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
8329
8330 rc = ipr_get_ldump_data_section(ioa_cfg,
8331 be32_to_cpu(sdt.entry[0].start_token),
8332 (__be32 *)&hostrcb->hcam,
8333 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
8334
8335 if (!rc) {
8336 ipr_handle_log_data(ioa_cfg, hostrcb);
8337 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
8338 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
8339 ioa_cfg->sdt_state == GET_DUMP)
8340 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8341 } else
8342 ipr_unit_check_no_data(ioa_cfg);
8343
8344 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
8345 }
8346
8347 /**
8348 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
8349 * @ipr_cmd: ipr command struct
8350 *
8351 * Description: This function will call to get the unit check buffer.
8352 *
8353 * Return value:
8354 * IPR_RC_JOB_RETURN
8355 **/
8356 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
8357 {
8358 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8359
8360 ENTER;
8361 ioa_cfg->ioa_unit_checked = 0;
8362 ipr_get_unit_check_buffer(ioa_cfg);
8363 ipr_cmd->job_step = ipr_reset_alert;
8364 ipr_reset_start_timer(ipr_cmd, 0);
8365
8366 LEAVE;
8367 return IPR_RC_JOB_RETURN;
8368 }
8369
8370 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd)
8371 {
8372 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8373
8374 ENTER;
8375
8376 if (ioa_cfg->sdt_state != GET_DUMP)
8377 return IPR_RC_JOB_RETURN;
8378
8379 if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left ||
8380 (readl(ioa_cfg->regs.sense_interrupt_reg) &
8381 IPR_PCII_MAILBOX_STABLE)) {
8382
8383 if (!ipr_cmd->u.time_left)
8384 dev_err(&ioa_cfg->pdev->dev,
8385 "Timed out waiting for Mailbox register.\n");
8386
8387 ioa_cfg->sdt_state = READ_DUMP;
8388 ioa_cfg->dump_timeout = 0;
8389 if (ioa_cfg->sis64)
8390 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
8391 else
8392 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
8393 ipr_cmd->job_step = ipr_reset_wait_for_dump;
8394 schedule_work(&ioa_cfg->work_q);
8395
8396 } else {
8397 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8398 ipr_reset_start_timer(ipr_cmd,
8399 IPR_CHECK_FOR_RESET_TIMEOUT);
8400 }
8401
8402 LEAVE;
8403 return IPR_RC_JOB_RETURN;
8404 }
8405
8406 /**
8407 * ipr_reset_restore_cfg_space - Restore PCI config space.
8408 * @ipr_cmd: ipr command struct
8409 *
8410 * Description: This function restores the saved PCI config space of
8411 * the adapter, fails all outstanding ops back to the callers, and
8412 * fetches the dump/unit check if applicable to this reset.
8413 *
8414 * Return value:
8415 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8416 **/
8417 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
8418 {
8419 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8420 u32 int_reg;
8421
8422 ENTER;
8423 ioa_cfg->pdev->state_saved = true;
8424 pci_restore_state(ioa_cfg->pdev);
8425
8426 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
8427 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8428 return IPR_RC_JOB_CONTINUE;
8429 }
8430
8431 ipr_fail_all_ops(ioa_cfg);
8432
8433 if (ioa_cfg->sis64) {
8434 /* Set the adapter to the correct endian mode. */
8435 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8436 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8437 }
8438
8439 if (ioa_cfg->ioa_unit_checked) {
8440 if (ioa_cfg->sis64) {
8441 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
8442 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
8443 return IPR_RC_JOB_RETURN;
8444 } else {
8445 ioa_cfg->ioa_unit_checked = 0;
8446 ipr_get_unit_check_buffer(ioa_cfg);
8447 ipr_cmd->job_step = ipr_reset_alert;
8448 ipr_reset_start_timer(ipr_cmd, 0);
8449 return IPR_RC_JOB_RETURN;
8450 }
8451 }
8452
8453 if (ioa_cfg->in_ioa_bringdown) {
8454 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8455 } else if (ioa_cfg->sdt_state == GET_DUMP) {
8456 ipr_cmd->job_step = ipr_dump_mailbox_wait;
8457 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX;
8458 } else {
8459 ipr_cmd->job_step = ipr_reset_enable_ioa;
8460 }
8461
8462 LEAVE;
8463 return IPR_RC_JOB_CONTINUE;
8464 }
8465
8466 /**
8467 * ipr_reset_bist_done - BIST has completed on the adapter.
8468 * @ipr_cmd: ipr command struct
8469 *
8470 * Description: Unblock config space and resume the reset process.
8471 *
8472 * Return value:
8473 * IPR_RC_JOB_CONTINUE
8474 **/
8475 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
8476 {
8477 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8478
8479 ENTER;
8480 if (ioa_cfg->cfg_locked)
8481 pci_cfg_access_unlock(ioa_cfg->pdev);
8482 ioa_cfg->cfg_locked = 0;
8483 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
8484 LEAVE;
8485 return IPR_RC_JOB_CONTINUE;
8486 }
8487
8488 /**
8489 * ipr_reset_start_bist - Run BIST on the adapter.
8490 * @ipr_cmd: ipr command struct
8491 *
8492 * Description: This function runs BIST on the adapter, then delays 2 seconds.
8493 *
8494 * Return value:
8495 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8496 **/
8497 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
8498 {
8499 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8500 int rc = PCIBIOS_SUCCESSFUL;
8501
8502 ENTER;
8503 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
8504 writel(IPR_UPROCI_SIS64_START_BIST,
8505 ioa_cfg->regs.set_uproc_interrupt_reg32);
8506 else
8507 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
8508
8509 if (rc == PCIBIOS_SUCCESSFUL) {
8510 ipr_cmd->job_step = ipr_reset_bist_done;
8511 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8512 rc = IPR_RC_JOB_RETURN;
8513 } else {
8514 if (ioa_cfg->cfg_locked)
8515 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
8516 ioa_cfg->cfg_locked = 0;
8517 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8518 rc = IPR_RC_JOB_CONTINUE;
8519 }
8520
8521 LEAVE;
8522 return rc;
8523 }
8524
8525 /**
8526 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
8527 * @ipr_cmd: ipr command struct
8528 *
8529 * Description: This clears PCI reset to the adapter and delays two seconds.
8530 *
8531 * Return value:
8532 * IPR_RC_JOB_RETURN
8533 **/
8534 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
8535 {
8536 ENTER;
8537 ipr_cmd->job_step = ipr_reset_bist_done;
8538 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8539 LEAVE;
8540 return IPR_RC_JOB_RETURN;
8541 }
8542
8543 /**
8544 * ipr_reset_reset_work - Pulse a PCIe fundamental reset
8545 * @work: work struct
8546 *
8547 * Description: This pulses warm reset to a slot.
8548 *
8549 **/
8550 static void ipr_reset_reset_work(struct work_struct *work)
8551 {
8552 struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work);
8553 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8554 struct pci_dev *pdev = ioa_cfg->pdev;
8555 unsigned long lock_flags = 0;
8556
8557 ENTER;
8558 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
8559 msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT));
8560 pci_set_pcie_reset_state(pdev, pcie_deassert_reset);
8561
8562 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8563 if (ioa_cfg->reset_cmd == ipr_cmd)
8564 ipr_reset_ioa_job(ipr_cmd);
8565 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8566 LEAVE;
8567 }
8568
8569 /**
8570 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
8571 * @ipr_cmd: ipr command struct
8572 *
8573 * Description: This asserts PCI reset to the adapter.
8574 *
8575 * Return value:
8576 * IPR_RC_JOB_RETURN
8577 **/
8578 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
8579 {
8580 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8581
8582 ENTER;
8583 INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work);
8584 queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work);
8585 ipr_cmd->job_step = ipr_reset_slot_reset_done;
8586 LEAVE;
8587 return IPR_RC_JOB_RETURN;
8588 }
8589
8590 /**
8591 * ipr_reset_block_config_access_wait - Wait for permission to block config access
8592 * @ipr_cmd: ipr command struct
8593 *
8594 * Description: This attempts to block config access to the IOA.
8595 *
8596 * Return value:
8597 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8598 **/
8599 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
8600 {
8601 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8602 int rc = IPR_RC_JOB_CONTINUE;
8603
8604 if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
8605 ioa_cfg->cfg_locked = 1;
8606 ipr_cmd->job_step = ioa_cfg->reset;
8607 } else {
8608 if (ipr_cmd->u.time_left) {
8609 rc = IPR_RC_JOB_RETURN;
8610 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8611 ipr_reset_start_timer(ipr_cmd,
8612 IPR_CHECK_FOR_RESET_TIMEOUT);
8613 } else {
8614 ipr_cmd->job_step = ioa_cfg->reset;
8615 dev_err(&ioa_cfg->pdev->dev,
8616 "Timed out waiting to lock config access. Resetting anyway.\n");
8617 }
8618 }
8619
8620 return rc;
8621 }
8622
8623 /**
8624 * ipr_reset_block_config_access - Block config access to the IOA
8625 * @ipr_cmd: ipr command struct
8626 *
8627 * Description: This attempts to block config access to the IOA
8628 *
8629 * Return value:
8630 * IPR_RC_JOB_CONTINUE
8631 **/
8632 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
8633 {
8634 ipr_cmd->ioa_cfg->cfg_locked = 0;
8635 ipr_cmd->job_step = ipr_reset_block_config_access_wait;
8636 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8637 return IPR_RC_JOB_CONTINUE;
8638 }
8639
8640 /**
8641 * ipr_reset_allowed - Query whether or not IOA can be reset
8642 * @ioa_cfg: ioa config struct
8643 *
8644 * Return value:
8645 * 0 if reset not allowed / non-zero if reset is allowed
8646 **/
8647 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
8648 {
8649 volatile u32 temp_reg;
8650
8651 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8652 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
8653 }
8654
8655 /**
8656 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
8657 * @ipr_cmd: ipr command struct
8658 *
8659 * Description: This function waits for adapter permission to run BIST,
8660 * then runs BIST. If the adapter does not give permission after a
8661 * reasonable time, we will reset the adapter anyway. The impact of
8662 * resetting the adapter without warning the adapter is the risk of
8663 * losing the persistent error log on the adapter. If the adapter is
8664 * reset while it is writing to the flash on the adapter, the flash
8665 * segment will have bad ECC and be zeroed.
8666 *
8667 * Return value:
8668 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8669 **/
8670 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
8671 {
8672 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8673 int rc = IPR_RC_JOB_RETURN;
8674
8675 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
8676 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8677 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8678 } else {
8679 ipr_cmd->job_step = ipr_reset_block_config_access;
8680 rc = IPR_RC_JOB_CONTINUE;
8681 }
8682
8683 return rc;
8684 }
8685
8686 /**
8687 * ipr_reset_alert - Alert the adapter of a pending reset
8688 * @ipr_cmd: ipr command struct
8689 *
8690 * Description: This function alerts the adapter that it will be reset.
8691 * If memory space is not currently enabled, proceed directly
8692 * to running BIST on the adapter. The timer must always be started
8693 * so we guarantee we do not run BIST from ipr_isr.
8694 *
8695 * Return value:
8696 * IPR_RC_JOB_RETURN
8697 **/
8698 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
8699 {
8700 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8701 u16 cmd_reg;
8702 int rc;
8703
8704 ENTER;
8705 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
8706
8707 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
8708 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
8709 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
8710 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
8711 } else {
8712 ipr_cmd->job_step = ipr_reset_block_config_access;
8713 }
8714
8715 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8716 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8717
8718 LEAVE;
8719 return IPR_RC_JOB_RETURN;
8720 }
8721
8722 /**
8723 * ipr_reset_quiesce_done - Complete IOA disconnect
8724 * @ipr_cmd: ipr command struct
8725 *
8726 * Description: Freeze the adapter to complete quiesce processing
8727 *
8728 * Return value:
8729 * IPR_RC_JOB_CONTINUE
8730 **/
8731 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd)
8732 {
8733 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8734
8735 ENTER;
8736 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8737 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8738 LEAVE;
8739 return IPR_RC_JOB_CONTINUE;
8740 }
8741
8742 /**
8743 * ipr_reset_cancel_hcam_done - Check for outstanding commands
8744 * @ipr_cmd: ipr command struct
8745 *
8746 * Description: Ensure nothing is outstanding to the IOA and
8747 * proceed with IOA disconnect. Otherwise reset the IOA.
8748 *
8749 * Return value:
8750 * IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE
8751 **/
8752 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd)
8753 {
8754 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8755 struct ipr_cmnd *loop_cmd;
8756 struct ipr_hrr_queue *hrrq;
8757 int rc = IPR_RC_JOB_CONTINUE;
8758 int count = 0;
8759
8760 ENTER;
8761 ipr_cmd->job_step = ipr_reset_quiesce_done;
8762
8763 for_each_hrrq(hrrq, ioa_cfg) {
8764 spin_lock(&hrrq->_lock);
8765 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) {
8766 count++;
8767 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8768 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
8769 rc = IPR_RC_JOB_RETURN;
8770 break;
8771 }
8772 spin_unlock(&hrrq->_lock);
8773
8774 if (count)
8775 break;
8776 }
8777
8778 LEAVE;
8779 return rc;
8780 }
8781
8782 /**
8783 * ipr_reset_cancel_hcam - Cancel outstanding HCAMs
8784 * @ipr_cmd: ipr command struct
8785 *
8786 * Description: Cancel any oustanding HCAMs to the IOA.
8787 *
8788 * Return value:
8789 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8790 **/
8791 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd)
8792 {
8793 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8794 int rc = IPR_RC_JOB_CONTINUE;
8795 struct ipr_cmd_pkt *cmd_pkt;
8796 struct ipr_cmnd *hcam_cmd;
8797 struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ];
8798
8799 ENTER;
8800 ipr_cmd->job_step = ipr_reset_cancel_hcam_done;
8801
8802 if (!hrrq->ioa_is_dead) {
8803 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) {
8804 list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) {
8805 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC)
8806 continue;
8807
8808 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8809 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8810 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
8811 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
8812 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST;
8813 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB;
8814 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff;
8815 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff;
8816 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff;
8817 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff;
8818 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff;
8819 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff;
8820 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff;
8821 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff;
8822
8823 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8824 IPR_CANCEL_TIMEOUT);
8825
8826 rc = IPR_RC_JOB_RETURN;
8827 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8828 break;
8829 }
8830 }
8831 } else
8832 ipr_cmd->job_step = ipr_reset_alert;
8833
8834 LEAVE;
8835 return rc;
8836 }
8837
8838 /**
8839 * ipr_reset_ucode_download_done - Microcode download completion
8840 * @ipr_cmd: ipr command struct
8841 *
8842 * Description: This function unmaps the microcode download buffer.
8843 *
8844 * Return value:
8845 * IPR_RC_JOB_CONTINUE
8846 **/
8847 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
8848 {
8849 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8850 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8851
8852 dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist,
8853 sglist->num_sg, DMA_TO_DEVICE);
8854
8855 ipr_cmd->job_step = ipr_reset_alert;
8856 return IPR_RC_JOB_CONTINUE;
8857 }
8858
8859 /**
8860 * ipr_reset_ucode_download - Download microcode to the adapter
8861 * @ipr_cmd: ipr command struct
8862 *
8863 * Description: This function checks to see if it there is microcode
8864 * to download to the adapter. If there is, a download is performed.
8865 *
8866 * Return value:
8867 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8868 **/
8869 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
8870 {
8871 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8872 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8873
8874 ENTER;
8875 ipr_cmd->job_step = ipr_reset_alert;
8876
8877 if (!sglist)
8878 return IPR_RC_JOB_CONTINUE;
8879
8880 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8881 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
8882 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
8883 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
8884 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
8885 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
8886 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
8887
8888 if (ioa_cfg->sis64)
8889 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
8890 else
8891 ipr_build_ucode_ioadl(ipr_cmd, sglist);
8892 ipr_cmd->job_step = ipr_reset_ucode_download_done;
8893
8894 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8895 IPR_WRITE_BUFFER_TIMEOUT);
8896
8897 LEAVE;
8898 return IPR_RC_JOB_RETURN;
8899 }
8900
8901 /**
8902 * ipr_reset_shutdown_ioa - Shutdown the adapter
8903 * @ipr_cmd: ipr command struct
8904 *
8905 * Description: This function issues an adapter shutdown of the
8906 * specified type to the specified adapter as part of the
8907 * adapter reset job.
8908 *
8909 * Return value:
8910 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8911 **/
8912 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
8913 {
8914 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8915 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
8916 unsigned long timeout;
8917 int rc = IPR_RC_JOB_CONTINUE;
8918
8919 ENTER;
8920 if (shutdown_type == IPR_SHUTDOWN_QUIESCE)
8921 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8922 else if (shutdown_type != IPR_SHUTDOWN_NONE &&
8923 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
8924 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8925 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8926 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
8927 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
8928
8929 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
8930 timeout = IPR_SHUTDOWN_TIMEOUT;
8931 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
8932 timeout = IPR_INTERNAL_TIMEOUT;
8933 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
8934 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
8935 else
8936 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
8937
8938 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
8939
8940 rc = IPR_RC_JOB_RETURN;
8941 ipr_cmd->job_step = ipr_reset_ucode_download;
8942 } else
8943 ipr_cmd->job_step = ipr_reset_alert;
8944
8945 LEAVE;
8946 return rc;
8947 }
8948
8949 /**
8950 * ipr_reset_ioa_job - Adapter reset job
8951 * @ipr_cmd: ipr command struct
8952 *
8953 * Description: This function is the job router for the adapter reset job.
8954 *
8955 * Return value:
8956 * none
8957 **/
8958 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
8959 {
8960 u32 rc, ioasc;
8961 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8962
8963 do {
8964 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
8965
8966 if (ioa_cfg->reset_cmd != ipr_cmd) {
8967 /*
8968 * We are doing nested adapter resets and this is
8969 * not the current reset job.
8970 */
8971 list_add_tail(&ipr_cmd->queue,
8972 &ipr_cmd->hrrq->hrrq_free_q);
8973 return;
8974 }
8975
8976 if (IPR_IOASC_SENSE_KEY(ioasc)) {
8977 rc = ipr_cmd->job_step_failed(ipr_cmd);
8978 if (rc == IPR_RC_JOB_RETURN)
8979 return;
8980 }
8981
8982 ipr_reinit_ipr_cmnd(ipr_cmd);
8983 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
8984 rc = ipr_cmd->job_step(ipr_cmd);
8985 } while (rc == IPR_RC_JOB_CONTINUE);
8986 }
8987
8988 /**
8989 * _ipr_initiate_ioa_reset - Initiate an adapter reset
8990 * @ioa_cfg: ioa config struct
8991 * @job_step: first job step of reset job
8992 * @shutdown_type: shutdown type
8993 *
8994 * Description: This function will initiate the reset of the given adapter
8995 * starting at the selected job step.
8996 * If the caller needs to wait on the completion of the reset,
8997 * the caller must sleep on the reset_wait_q.
8998 *
8999 * Return value:
9000 * none
9001 **/
9002 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9003 int (*job_step) (struct ipr_cmnd *),
9004 enum ipr_shutdown_type shutdown_type)
9005 {
9006 struct ipr_cmnd *ipr_cmd;
9007 int i;
9008
9009 ioa_cfg->in_reset_reload = 1;
9010 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9011 spin_lock(&ioa_cfg->hrrq[i]._lock);
9012 ioa_cfg->hrrq[i].allow_cmds = 0;
9013 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9014 }
9015 wmb();
9016 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa)
9017 scsi_block_requests(ioa_cfg->host);
9018
9019 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9020 ioa_cfg->reset_cmd = ipr_cmd;
9021 ipr_cmd->job_step = job_step;
9022 ipr_cmd->u.shutdown_type = shutdown_type;
9023
9024 ipr_reset_ioa_job(ipr_cmd);
9025 }
9026
9027 /**
9028 * ipr_initiate_ioa_reset - Initiate an adapter reset
9029 * @ioa_cfg: ioa config struct
9030 * @shutdown_type: shutdown type
9031 *
9032 * Description: This function will initiate the reset of the given adapter.
9033 * If the caller needs to wait on the completion of the reset,
9034 * the caller must sleep on the reset_wait_q.
9035 *
9036 * Return value:
9037 * none
9038 **/
9039 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9040 enum ipr_shutdown_type shutdown_type)
9041 {
9042 int i;
9043
9044 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
9045 return;
9046
9047 if (ioa_cfg->in_reset_reload) {
9048 if (ioa_cfg->sdt_state == GET_DUMP)
9049 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
9050 else if (ioa_cfg->sdt_state == READ_DUMP)
9051 ioa_cfg->sdt_state = ABORT_DUMP;
9052 }
9053
9054 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
9055 dev_err(&ioa_cfg->pdev->dev,
9056 "IOA taken offline - error recovery failed\n");
9057
9058 ioa_cfg->reset_retries = 0;
9059 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9060 spin_lock(&ioa_cfg->hrrq[i]._lock);
9061 ioa_cfg->hrrq[i].ioa_is_dead = 1;
9062 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9063 }
9064 wmb();
9065
9066 if (ioa_cfg->in_ioa_bringdown) {
9067 ioa_cfg->reset_cmd = NULL;
9068 ioa_cfg->in_reset_reload = 0;
9069 ipr_fail_all_ops(ioa_cfg);
9070 wake_up_all(&ioa_cfg->reset_wait_q);
9071
9072 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
9073 spin_unlock_irq(ioa_cfg->host->host_lock);
9074 scsi_unblock_requests(ioa_cfg->host);
9075 spin_lock_irq(ioa_cfg->host->host_lock);
9076 }
9077 return;
9078 } else {
9079 ioa_cfg->in_ioa_bringdown = 1;
9080 shutdown_type = IPR_SHUTDOWN_NONE;
9081 }
9082 }
9083
9084 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
9085 shutdown_type);
9086 }
9087
9088 /**
9089 * ipr_reset_freeze - Hold off all I/O activity
9090 * @ipr_cmd: ipr command struct
9091 *
9092 * Description: If the PCI slot is frozen, hold off all I/O
9093 * activity; then, as soon as the slot is available again,
9094 * initiate an adapter reset.
9095 */
9096 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
9097 {
9098 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9099 int i;
9100
9101 /* Disallow new interrupts, avoid loop */
9102 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9103 spin_lock(&ioa_cfg->hrrq[i]._lock);
9104 ioa_cfg->hrrq[i].allow_interrupts = 0;
9105 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9106 }
9107 wmb();
9108 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
9109 ipr_cmd->done = ipr_reset_ioa_job;
9110 return IPR_RC_JOB_RETURN;
9111 }
9112
9113 /**
9114 * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled
9115 * @pdev: PCI device struct
9116 *
9117 * Description: This routine is called to tell us that the MMIO
9118 * access to the IOA has been restored
9119 */
9120 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev)
9121 {
9122 unsigned long flags = 0;
9123 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9124
9125 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9126 if (!ioa_cfg->probe_done)
9127 pci_save_state(pdev);
9128 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9129 return PCI_ERS_RESULT_NEED_RESET;
9130 }
9131
9132 /**
9133 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
9134 * @pdev: PCI device struct
9135 *
9136 * Description: This routine is called to tell us that the PCI bus
9137 * is down. Can't do anything here, except put the device driver
9138 * into a holding pattern, waiting for the PCI bus to come back.
9139 */
9140 static void ipr_pci_frozen(struct pci_dev *pdev)
9141 {
9142 unsigned long flags = 0;
9143 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9144
9145 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9146 if (ioa_cfg->probe_done)
9147 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
9148 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9149 }
9150
9151 /**
9152 * ipr_pci_slot_reset - Called when PCI slot has been reset.
9153 * @pdev: PCI device struct
9154 *
9155 * Description: This routine is called by the pci error recovery
9156 * code after the PCI slot has been reset, just before we
9157 * should resume normal operations.
9158 */
9159 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
9160 {
9161 unsigned long flags = 0;
9162 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9163
9164 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9165 if (ioa_cfg->probe_done) {
9166 if (ioa_cfg->needs_warm_reset)
9167 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9168 else
9169 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
9170 IPR_SHUTDOWN_NONE);
9171 } else
9172 wake_up_all(&ioa_cfg->eeh_wait_q);
9173 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9174 return PCI_ERS_RESULT_RECOVERED;
9175 }
9176
9177 /**
9178 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
9179 * @pdev: PCI device struct
9180 *
9181 * Description: This routine is called when the PCI bus has
9182 * permanently failed.
9183 */
9184 static void ipr_pci_perm_failure(struct pci_dev *pdev)
9185 {
9186 unsigned long flags = 0;
9187 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9188 int i;
9189
9190 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9191 if (ioa_cfg->probe_done) {
9192 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
9193 ioa_cfg->sdt_state = ABORT_DUMP;
9194 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1;
9195 ioa_cfg->in_ioa_bringdown = 1;
9196 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9197 spin_lock(&ioa_cfg->hrrq[i]._lock);
9198 ioa_cfg->hrrq[i].allow_cmds = 0;
9199 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9200 }
9201 wmb();
9202 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9203 } else
9204 wake_up_all(&ioa_cfg->eeh_wait_q);
9205 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9206 }
9207
9208 /**
9209 * ipr_pci_error_detected - Called when a PCI error is detected.
9210 * @pdev: PCI device struct
9211 * @state: PCI channel state
9212 *
9213 * Description: Called when a PCI error is detected.
9214 *
9215 * Return value:
9216 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
9217 */
9218 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
9219 pci_channel_state_t state)
9220 {
9221 switch (state) {
9222 case pci_channel_io_frozen:
9223 ipr_pci_frozen(pdev);
9224 return PCI_ERS_RESULT_CAN_RECOVER;
9225 case pci_channel_io_perm_failure:
9226 ipr_pci_perm_failure(pdev);
9227 return PCI_ERS_RESULT_DISCONNECT;
9228 break;
9229 default:
9230 break;
9231 }
9232 return PCI_ERS_RESULT_NEED_RESET;
9233 }
9234
9235 /**
9236 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
9237 * @ioa_cfg: ioa cfg struct
9238 *
9239 * Description: This is the second phase of adapter intialization
9240 * This function takes care of initilizing the adapter to the point
9241 * where it can accept new commands.
9242
9243 * Return value:
9244 * 0 on success / -EIO on failure
9245 **/
9246 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
9247 {
9248 int rc = 0;
9249 unsigned long host_lock_flags = 0;
9250
9251 ENTER;
9252 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9253 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
9254 ioa_cfg->probe_done = 1;
9255 if (ioa_cfg->needs_hard_reset) {
9256 ioa_cfg->needs_hard_reset = 0;
9257 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9258 } else
9259 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
9260 IPR_SHUTDOWN_NONE);
9261 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9262
9263 LEAVE;
9264 return rc;
9265 }
9266
9267 /**
9268 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
9269 * @ioa_cfg: ioa config struct
9270 *
9271 * Return value:
9272 * none
9273 **/
9274 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9275 {
9276 int i;
9277
9278 if (ioa_cfg->ipr_cmnd_list) {
9279 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9280 if (ioa_cfg->ipr_cmnd_list[i])
9281 dma_pool_free(ioa_cfg->ipr_cmd_pool,
9282 ioa_cfg->ipr_cmnd_list[i],
9283 ioa_cfg->ipr_cmnd_list_dma[i]);
9284
9285 ioa_cfg->ipr_cmnd_list[i] = NULL;
9286 }
9287 }
9288
9289 if (ioa_cfg->ipr_cmd_pool)
9290 dma_pool_destroy(ioa_cfg->ipr_cmd_pool);
9291
9292 kfree(ioa_cfg->ipr_cmnd_list);
9293 kfree(ioa_cfg->ipr_cmnd_list_dma);
9294 ioa_cfg->ipr_cmnd_list = NULL;
9295 ioa_cfg->ipr_cmnd_list_dma = NULL;
9296 ioa_cfg->ipr_cmd_pool = NULL;
9297 }
9298
9299 /**
9300 * ipr_free_mem - Frees memory allocated for an adapter
9301 * @ioa_cfg: ioa cfg struct
9302 *
9303 * Return value:
9304 * nothing
9305 **/
9306 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
9307 {
9308 int i;
9309
9310 kfree(ioa_cfg->res_entries);
9311 dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs),
9312 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9313 ipr_free_cmd_blks(ioa_cfg);
9314
9315 for (i = 0; i < ioa_cfg->hrrq_num; i++)
9316 dma_free_coherent(&ioa_cfg->pdev->dev,
9317 sizeof(u32) * ioa_cfg->hrrq[i].size,
9318 ioa_cfg->hrrq[i].host_rrq,
9319 ioa_cfg->hrrq[i].host_rrq_dma);
9320
9321 dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size,
9322 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9323
9324 for (i = 0; i < IPR_NUM_HCAMS; i++) {
9325 dma_free_coherent(&ioa_cfg->pdev->dev,
9326 sizeof(struct ipr_hostrcb),
9327 ioa_cfg->hostrcb[i],
9328 ioa_cfg->hostrcb_dma[i]);
9329 }
9330
9331 ipr_free_dump(ioa_cfg);
9332 kfree(ioa_cfg->trace);
9333 }
9334
9335 /**
9336 * ipr_free_irqs - Free all allocated IRQs for the adapter.
9337 * @ioa_cfg: ipr cfg struct
9338 *
9339 * This function frees all allocated IRQs for the
9340 * specified adapter.
9341 *
9342 * Return value:
9343 * none
9344 **/
9345 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg)
9346 {
9347 struct pci_dev *pdev = ioa_cfg->pdev;
9348
9349 if (ioa_cfg->intr_flag == IPR_USE_MSI ||
9350 ioa_cfg->intr_flag == IPR_USE_MSIX) {
9351 int i;
9352 for (i = 0; i < ioa_cfg->nvectors; i++)
9353 free_irq(ioa_cfg->vectors_info[i].vec,
9354 &ioa_cfg->hrrq[i]);
9355 } else
9356 free_irq(pdev->irq, &ioa_cfg->hrrq[0]);
9357
9358 if (ioa_cfg->intr_flag == IPR_USE_MSI) {
9359 pci_disable_msi(pdev);
9360 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
9361 } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
9362 pci_disable_msix(pdev);
9363 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
9364 }
9365 }
9366
9367 /**
9368 * ipr_free_all_resources - Free all allocated resources for an adapter.
9369 * @ipr_cmd: ipr command struct
9370 *
9371 * This function frees all allocated resources for the
9372 * specified adapter.
9373 *
9374 * Return value:
9375 * none
9376 **/
9377 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
9378 {
9379 struct pci_dev *pdev = ioa_cfg->pdev;
9380
9381 ENTER;
9382 ipr_free_irqs(ioa_cfg);
9383 if (ioa_cfg->reset_work_q)
9384 destroy_workqueue(ioa_cfg->reset_work_q);
9385 iounmap(ioa_cfg->hdw_dma_regs);
9386 pci_release_regions(pdev);
9387 ipr_free_mem(ioa_cfg);
9388 scsi_host_put(ioa_cfg->host);
9389 pci_disable_device(pdev);
9390 LEAVE;
9391 }
9392
9393 /**
9394 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
9395 * @ioa_cfg: ioa config struct
9396 *
9397 * Return value:
9398 * 0 on success / -ENOMEM on allocation failure
9399 **/
9400 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9401 {
9402 struct ipr_cmnd *ipr_cmd;
9403 struct ipr_ioarcb *ioarcb;
9404 dma_addr_t dma_addr;
9405 int i, entries_each_hrrq, hrrq_id = 0;
9406
9407 ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev,
9408 sizeof(struct ipr_cmnd), 512, 0);
9409
9410 if (!ioa_cfg->ipr_cmd_pool)
9411 return -ENOMEM;
9412
9413 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL);
9414 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL);
9415
9416 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) {
9417 ipr_free_cmd_blks(ioa_cfg);
9418 return -ENOMEM;
9419 }
9420
9421 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9422 if (ioa_cfg->hrrq_num > 1) {
9423 if (i == 0) {
9424 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS;
9425 ioa_cfg->hrrq[i].min_cmd_id = 0;
9426 ioa_cfg->hrrq[i].max_cmd_id =
9427 (entries_each_hrrq - 1);
9428 } else {
9429 entries_each_hrrq =
9430 IPR_NUM_BASE_CMD_BLKS/
9431 (ioa_cfg->hrrq_num - 1);
9432 ioa_cfg->hrrq[i].min_cmd_id =
9433 IPR_NUM_INTERNAL_CMD_BLKS +
9434 (i - 1) * entries_each_hrrq;
9435 ioa_cfg->hrrq[i].max_cmd_id =
9436 (IPR_NUM_INTERNAL_CMD_BLKS +
9437 i * entries_each_hrrq - 1);
9438 }
9439 } else {
9440 entries_each_hrrq = IPR_NUM_CMD_BLKS;
9441 ioa_cfg->hrrq[i].min_cmd_id = 0;
9442 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1);
9443 }
9444 ioa_cfg->hrrq[i].size = entries_each_hrrq;
9445 }
9446
9447 BUG_ON(ioa_cfg->hrrq_num == 0);
9448
9449 i = IPR_NUM_CMD_BLKS -
9450 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1;
9451 if (i > 0) {
9452 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i;
9453 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i;
9454 }
9455
9456 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9457 ipr_cmd = dma_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
9458
9459 if (!ipr_cmd) {
9460 ipr_free_cmd_blks(ioa_cfg);
9461 return -ENOMEM;
9462 }
9463
9464 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
9465 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
9466 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
9467
9468 ioarcb = &ipr_cmd->ioarcb;
9469 ipr_cmd->dma_addr = dma_addr;
9470 if (ioa_cfg->sis64)
9471 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
9472 else
9473 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
9474
9475 ioarcb->host_response_handle = cpu_to_be32(i << 2);
9476 if (ioa_cfg->sis64) {
9477 ioarcb->u.sis64_addr_data.data_ioadl_addr =
9478 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
9479 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
9480 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
9481 } else {
9482 ioarcb->write_ioadl_addr =
9483 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
9484 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
9485 ioarcb->ioasa_host_pci_addr =
9486 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
9487 }
9488 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
9489 ipr_cmd->cmd_index = i;
9490 ipr_cmd->ioa_cfg = ioa_cfg;
9491 ipr_cmd->sense_buffer_dma = dma_addr +
9492 offsetof(struct ipr_cmnd, sense_buffer);
9493
9494 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id;
9495 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id];
9496 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9497 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id)
9498 hrrq_id++;
9499 }
9500
9501 return 0;
9502 }
9503
9504 /**
9505 * ipr_alloc_mem - Allocate memory for an adapter
9506 * @ioa_cfg: ioa config struct
9507 *
9508 * Return value:
9509 * 0 on success / non-zero for error
9510 **/
9511 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
9512 {
9513 struct pci_dev *pdev = ioa_cfg->pdev;
9514 int i, rc = -ENOMEM;
9515
9516 ENTER;
9517 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
9518 ioa_cfg->max_devs_supported, GFP_KERNEL);
9519
9520 if (!ioa_cfg->res_entries)
9521 goto out;
9522
9523 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
9524 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
9525 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
9526 }
9527
9528 ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev,
9529 sizeof(struct ipr_misc_cbs),
9530 &ioa_cfg->vpd_cbs_dma,
9531 GFP_KERNEL);
9532
9533 if (!ioa_cfg->vpd_cbs)
9534 goto out_free_res_entries;
9535
9536 if (ipr_alloc_cmd_blks(ioa_cfg))
9537 goto out_free_vpd_cbs;
9538
9539 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9540 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev,
9541 sizeof(u32) * ioa_cfg->hrrq[i].size,
9542 &ioa_cfg->hrrq[i].host_rrq_dma,
9543 GFP_KERNEL);
9544
9545 if (!ioa_cfg->hrrq[i].host_rrq) {
9546 while (--i > 0)
9547 dma_free_coherent(&pdev->dev,
9548 sizeof(u32) * ioa_cfg->hrrq[i].size,
9549 ioa_cfg->hrrq[i].host_rrq,
9550 ioa_cfg->hrrq[i].host_rrq_dma);
9551 goto out_ipr_free_cmd_blocks;
9552 }
9553 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg;
9554 }
9555
9556 ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev,
9557 ioa_cfg->cfg_table_size,
9558 &ioa_cfg->cfg_table_dma,
9559 GFP_KERNEL);
9560
9561 if (!ioa_cfg->u.cfg_table)
9562 goto out_free_host_rrq;
9563
9564 for (i = 0; i < IPR_NUM_HCAMS; i++) {
9565 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev,
9566 sizeof(struct ipr_hostrcb),
9567 &ioa_cfg->hostrcb_dma[i],
9568 GFP_KERNEL);
9569
9570 if (!ioa_cfg->hostrcb[i])
9571 goto out_free_hostrcb_dma;
9572
9573 ioa_cfg->hostrcb[i]->hostrcb_dma =
9574 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
9575 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
9576 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
9577 }
9578
9579 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
9580 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
9581
9582 if (!ioa_cfg->trace)
9583 goto out_free_hostrcb_dma;
9584
9585 rc = 0;
9586 out:
9587 LEAVE;
9588 return rc;
9589
9590 out_free_hostrcb_dma:
9591 while (i-- > 0) {
9592 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb),
9593 ioa_cfg->hostrcb[i],
9594 ioa_cfg->hostrcb_dma[i]);
9595 }
9596 dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size,
9597 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9598 out_free_host_rrq:
9599 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9600 dma_free_coherent(&pdev->dev,
9601 sizeof(u32) * ioa_cfg->hrrq[i].size,
9602 ioa_cfg->hrrq[i].host_rrq,
9603 ioa_cfg->hrrq[i].host_rrq_dma);
9604 }
9605 out_ipr_free_cmd_blocks:
9606 ipr_free_cmd_blks(ioa_cfg);
9607 out_free_vpd_cbs:
9608 dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs),
9609 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9610 out_free_res_entries:
9611 kfree(ioa_cfg->res_entries);
9612 goto out;
9613 }
9614
9615 /**
9616 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
9617 * @ioa_cfg: ioa config struct
9618 *
9619 * Return value:
9620 * none
9621 **/
9622 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
9623 {
9624 int i;
9625
9626 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
9627 ioa_cfg->bus_attr[i].bus = i;
9628 ioa_cfg->bus_attr[i].qas_enabled = 0;
9629 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
9630 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
9631 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
9632 else
9633 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
9634 }
9635 }
9636
9637 /**
9638 * ipr_init_regs - Initialize IOA registers
9639 * @ioa_cfg: ioa config struct
9640 *
9641 * Return value:
9642 * none
9643 **/
9644 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg)
9645 {
9646 const struct ipr_interrupt_offsets *p;
9647 struct ipr_interrupts *t;
9648 void __iomem *base;
9649
9650 p = &ioa_cfg->chip_cfg->regs;
9651 t = &ioa_cfg->regs;
9652 base = ioa_cfg->hdw_dma_regs;
9653
9654 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
9655 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
9656 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
9657 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
9658 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
9659 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
9660 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
9661 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
9662 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
9663 t->ioarrin_reg = base + p->ioarrin_reg;
9664 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
9665 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
9666 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
9667 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
9668 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
9669 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
9670
9671 if (ioa_cfg->sis64) {
9672 t->init_feedback_reg = base + p->init_feedback_reg;
9673 t->dump_addr_reg = base + p->dump_addr_reg;
9674 t->dump_data_reg = base + p->dump_data_reg;
9675 t->endian_swap_reg = base + p->endian_swap_reg;
9676 }
9677 }
9678
9679 /**
9680 * ipr_init_ioa_cfg - Initialize IOA config struct
9681 * @ioa_cfg: ioa config struct
9682 * @host: scsi host struct
9683 * @pdev: PCI dev struct
9684 *
9685 * Return value:
9686 * none
9687 **/
9688 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
9689 struct Scsi_Host *host, struct pci_dev *pdev)
9690 {
9691 int i;
9692
9693 ioa_cfg->host = host;
9694 ioa_cfg->pdev = pdev;
9695 ioa_cfg->log_level = ipr_log_level;
9696 ioa_cfg->doorbell = IPR_DOORBELL;
9697 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
9698 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
9699 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
9700 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
9701 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
9702 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
9703
9704 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
9705 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
9706 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
9707 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9708 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
9709 init_waitqueue_head(&ioa_cfg->reset_wait_q);
9710 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9711 init_waitqueue_head(&ioa_cfg->eeh_wait_q);
9712 ioa_cfg->sdt_state = INACTIVE;
9713
9714 ipr_initialize_bus_attr(ioa_cfg);
9715 ioa_cfg->max_devs_supported = ipr_max_devs;
9716
9717 if (ioa_cfg->sis64) {
9718 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
9719 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
9720 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
9721 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
9722 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
9723 + ((sizeof(struct ipr_config_table_entry64)
9724 * ioa_cfg->max_devs_supported)));
9725 } else {
9726 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
9727 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
9728 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
9729 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
9730 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
9731 + ((sizeof(struct ipr_config_table_entry)
9732 * ioa_cfg->max_devs_supported)));
9733 }
9734
9735 host->max_channel = IPR_VSET_BUS;
9736 host->unique_id = host->host_no;
9737 host->max_cmd_len = IPR_MAX_CDB_LEN;
9738 host->can_queue = ioa_cfg->max_cmds;
9739 pci_set_drvdata(pdev, ioa_cfg);
9740
9741 for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) {
9742 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q);
9743 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q);
9744 spin_lock_init(&ioa_cfg->hrrq[i]._lock);
9745 if (i == 0)
9746 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock;
9747 else
9748 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock;
9749 }
9750 }
9751
9752 /**
9753 * ipr_get_chip_info - Find adapter chip information
9754 * @dev_id: PCI device id struct
9755 *
9756 * Return value:
9757 * ptr to chip information on success / NULL on failure
9758 **/
9759 static const struct ipr_chip_t *
9760 ipr_get_chip_info(const struct pci_device_id *dev_id)
9761 {
9762 int i;
9763
9764 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
9765 if (ipr_chip[i].vendor == dev_id->vendor &&
9766 ipr_chip[i].device == dev_id->device)
9767 return &ipr_chip[i];
9768 return NULL;
9769 }
9770
9771 /**
9772 * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete
9773 * during probe time
9774 * @ioa_cfg: ioa config struct
9775 *
9776 * Return value:
9777 * None
9778 **/
9779 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg)
9780 {
9781 struct pci_dev *pdev = ioa_cfg->pdev;
9782
9783 if (pci_channel_offline(pdev)) {
9784 wait_event_timeout(ioa_cfg->eeh_wait_q,
9785 !pci_channel_offline(pdev),
9786 IPR_PCI_ERROR_RECOVERY_TIMEOUT);
9787 pci_restore_state(pdev);
9788 }
9789 }
9790
9791 static int ipr_enable_msix(struct ipr_ioa_cfg *ioa_cfg)
9792 {
9793 struct msix_entry entries[IPR_MAX_MSIX_VECTORS];
9794 int i, vectors;
9795
9796 for (i = 0; i < ARRAY_SIZE(entries); ++i)
9797 entries[i].entry = i;
9798
9799 vectors = pci_enable_msix_range(ioa_cfg->pdev,
9800 entries, 1, ipr_number_of_msix);
9801 if (vectors < 0) {
9802 ipr_wait_for_pci_err_recovery(ioa_cfg);
9803 return vectors;
9804 }
9805
9806 for (i = 0; i < vectors; i++)
9807 ioa_cfg->vectors_info[i].vec = entries[i].vector;
9808 ioa_cfg->nvectors = vectors;
9809
9810 return 0;
9811 }
9812
9813 static int ipr_enable_msi(struct ipr_ioa_cfg *ioa_cfg)
9814 {
9815 int i, vectors;
9816
9817 vectors = pci_enable_msi_range(ioa_cfg->pdev, 1, ipr_number_of_msix);
9818 if (vectors < 0) {
9819 ipr_wait_for_pci_err_recovery(ioa_cfg);
9820 return vectors;
9821 }
9822
9823 for (i = 0; i < vectors; i++)
9824 ioa_cfg->vectors_info[i].vec = ioa_cfg->pdev->irq + i;
9825 ioa_cfg->nvectors = vectors;
9826
9827 return 0;
9828 }
9829
9830 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg)
9831 {
9832 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1;
9833
9834 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) {
9835 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n,
9836 "host%d-%d", ioa_cfg->host->host_no, vec_idx);
9837 ioa_cfg->vectors_info[vec_idx].
9838 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0;
9839 }
9840 }
9841
9842 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg)
9843 {
9844 int i, rc;
9845
9846 for (i = 1; i < ioa_cfg->nvectors; i++) {
9847 rc = request_irq(ioa_cfg->vectors_info[i].vec,
9848 ipr_isr_mhrrq,
9849 0,
9850 ioa_cfg->vectors_info[i].desc,
9851 &ioa_cfg->hrrq[i]);
9852 if (rc) {
9853 while (--i >= 0)
9854 free_irq(ioa_cfg->vectors_info[i].vec,
9855 &ioa_cfg->hrrq[i]);
9856 return rc;
9857 }
9858 }
9859 return 0;
9860 }
9861
9862 /**
9863 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
9864 * @pdev: PCI device struct
9865 *
9866 * Description: Simply set the msi_received flag to 1 indicating that
9867 * Message Signaled Interrupts are supported.
9868 *
9869 * Return value:
9870 * 0 on success / non-zero on failure
9871 **/
9872 static irqreturn_t ipr_test_intr(int irq, void *devp)
9873 {
9874 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
9875 unsigned long lock_flags = 0;
9876 irqreturn_t rc = IRQ_HANDLED;
9877
9878 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq);
9879 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9880
9881 ioa_cfg->msi_received = 1;
9882 wake_up(&ioa_cfg->msi_wait_q);
9883
9884 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9885 return rc;
9886 }
9887
9888 /**
9889 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
9890 * @pdev: PCI device struct
9891 *
9892 * Description: The return value from pci_enable_msi_range() can not always be
9893 * trusted. This routine sets up and initiates a test interrupt to determine
9894 * if the interrupt is received via the ipr_test_intr() service routine.
9895 * If the tests fails, the driver will fall back to LSI.
9896 *
9897 * Return value:
9898 * 0 on success / non-zero on failure
9899 **/
9900 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev)
9901 {
9902 int rc;
9903 volatile u32 int_reg;
9904 unsigned long lock_flags = 0;
9905
9906 ENTER;
9907
9908 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9909 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9910 ioa_cfg->msi_received = 0;
9911 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9912 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
9913 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
9914 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9915
9916 if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9917 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9918 else
9919 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9920 if (rc) {
9921 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
9922 return rc;
9923 } else if (ipr_debug)
9924 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
9925
9926 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
9927 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
9928 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
9929 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9930 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9931
9932 if (!ioa_cfg->msi_received) {
9933 /* MSI test failed */
9934 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
9935 rc = -EOPNOTSUPP;
9936 } else if (ipr_debug)
9937 dev_info(&pdev->dev, "MSI test succeeded.\n");
9938
9939 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9940
9941 if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9942 free_irq(ioa_cfg->vectors_info[0].vec, ioa_cfg);
9943 else
9944 free_irq(pdev->irq, ioa_cfg);
9945
9946 LEAVE;
9947
9948 return rc;
9949 }
9950
9951 /* ipr_probe_ioa - Allocates memory and does first stage of initialization
9952 * @pdev: PCI device struct
9953 * @dev_id: PCI device id struct
9954 *
9955 * Return value:
9956 * 0 on success / non-zero on failure
9957 **/
9958 static int ipr_probe_ioa(struct pci_dev *pdev,
9959 const struct pci_device_id *dev_id)
9960 {
9961 struct ipr_ioa_cfg *ioa_cfg;
9962 struct Scsi_Host *host;
9963 unsigned long ipr_regs_pci;
9964 void __iomem *ipr_regs;
9965 int rc = PCIBIOS_SUCCESSFUL;
9966 volatile u32 mask, uproc, interrupts;
9967 unsigned long lock_flags, driver_lock_flags;
9968
9969 ENTER;
9970
9971 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
9972 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
9973
9974 if (!host) {
9975 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
9976 rc = -ENOMEM;
9977 goto out;
9978 }
9979
9980 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
9981 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
9982 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops);
9983
9984 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
9985
9986 if (!ioa_cfg->ipr_chip) {
9987 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
9988 dev_id->vendor, dev_id->device);
9989 goto out_scsi_host_put;
9990 }
9991
9992 /* set SIS 32 or SIS 64 */
9993 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
9994 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
9995 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr;
9996 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds;
9997
9998 if (ipr_transop_timeout)
9999 ioa_cfg->transop_timeout = ipr_transop_timeout;
10000 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
10001 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
10002 else
10003 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
10004
10005 ioa_cfg->revid = pdev->revision;
10006
10007 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
10008
10009 ipr_regs_pci = pci_resource_start(pdev, 0);
10010
10011 rc = pci_request_regions(pdev, IPR_NAME);
10012 if (rc < 0) {
10013 dev_err(&pdev->dev,
10014 "Couldn't register memory range of registers\n");
10015 goto out_scsi_host_put;
10016 }
10017
10018 rc = pci_enable_device(pdev);
10019
10020 if (rc || pci_channel_offline(pdev)) {
10021 if (pci_channel_offline(pdev)) {
10022 ipr_wait_for_pci_err_recovery(ioa_cfg);
10023 rc = pci_enable_device(pdev);
10024 }
10025
10026 if (rc) {
10027 dev_err(&pdev->dev, "Cannot enable adapter\n");
10028 ipr_wait_for_pci_err_recovery(ioa_cfg);
10029 goto out_release_regions;
10030 }
10031 }
10032
10033 ipr_regs = pci_ioremap_bar(pdev, 0);
10034
10035 if (!ipr_regs) {
10036 dev_err(&pdev->dev,
10037 "Couldn't map memory range of registers\n");
10038 rc = -ENOMEM;
10039 goto out_disable;
10040 }
10041
10042 ioa_cfg->hdw_dma_regs = ipr_regs;
10043 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
10044 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
10045
10046 ipr_init_regs(ioa_cfg);
10047
10048 if (ioa_cfg->sis64) {
10049 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10050 if (rc < 0) {
10051 dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n");
10052 rc = dma_set_mask_and_coherent(&pdev->dev,
10053 DMA_BIT_MASK(32));
10054 }
10055 } else
10056 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10057
10058 if (rc < 0) {
10059 dev_err(&pdev->dev, "Failed to set DMA mask\n");
10060 goto cleanup_nomem;
10061 }
10062
10063 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
10064 ioa_cfg->chip_cfg->cache_line_size);
10065
10066 if (rc != PCIBIOS_SUCCESSFUL) {
10067 dev_err(&pdev->dev, "Write of cache line size failed\n");
10068 ipr_wait_for_pci_err_recovery(ioa_cfg);
10069 rc = -EIO;
10070 goto cleanup_nomem;
10071 }
10072
10073 /* Issue MMIO read to ensure card is not in EEH */
10074 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
10075 ipr_wait_for_pci_err_recovery(ioa_cfg);
10076
10077 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) {
10078 dev_err(&pdev->dev, "The max number of MSIX is %d\n",
10079 IPR_MAX_MSIX_VECTORS);
10080 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS;
10081 }
10082
10083 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
10084 ipr_enable_msix(ioa_cfg) == 0)
10085 ioa_cfg->intr_flag = IPR_USE_MSIX;
10086 else if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
10087 ipr_enable_msi(ioa_cfg) == 0)
10088 ioa_cfg->intr_flag = IPR_USE_MSI;
10089 else {
10090 ioa_cfg->intr_flag = IPR_USE_LSI;
10091 ioa_cfg->nvectors = 1;
10092 dev_info(&pdev->dev, "Cannot enable MSI.\n");
10093 }
10094
10095 pci_set_master(pdev);
10096
10097 if (pci_channel_offline(pdev)) {
10098 ipr_wait_for_pci_err_recovery(ioa_cfg);
10099 pci_set_master(pdev);
10100 if (pci_channel_offline(pdev)) {
10101 rc = -EIO;
10102 goto out_msi_disable;
10103 }
10104 }
10105
10106 if (ioa_cfg->intr_flag == IPR_USE_MSI ||
10107 ioa_cfg->intr_flag == IPR_USE_MSIX) {
10108 rc = ipr_test_msi(ioa_cfg, pdev);
10109 if (rc == -EOPNOTSUPP) {
10110 ipr_wait_for_pci_err_recovery(ioa_cfg);
10111 if (ioa_cfg->intr_flag == IPR_USE_MSI) {
10112 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
10113 pci_disable_msi(pdev);
10114 } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
10115 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
10116 pci_disable_msix(pdev);
10117 }
10118
10119 ioa_cfg->intr_flag = IPR_USE_LSI;
10120 ioa_cfg->nvectors = 1;
10121 }
10122 else if (rc)
10123 goto out_msi_disable;
10124 else {
10125 if (ioa_cfg->intr_flag == IPR_USE_MSI)
10126 dev_info(&pdev->dev,
10127 "Request for %d MSIs succeeded with starting IRQ: %d\n",
10128 ioa_cfg->nvectors, pdev->irq);
10129 else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
10130 dev_info(&pdev->dev,
10131 "Request for %d MSIXs succeeded.",
10132 ioa_cfg->nvectors);
10133 }
10134 }
10135
10136 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors,
10137 (unsigned int)num_online_cpus(),
10138 (unsigned int)IPR_MAX_HRRQ_NUM);
10139
10140 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
10141 goto out_msi_disable;
10142
10143 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
10144 goto out_msi_disable;
10145
10146 rc = ipr_alloc_mem(ioa_cfg);
10147 if (rc < 0) {
10148 dev_err(&pdev->dev,
10149 "Couldn't allocate enough memory for device driver!\n");
10150 goto out_msi_disable;
10151 }
10152
10153 /* Save away PCI config space for use following IOA reset */
10154 rc = pci_save_state(pdev);
10155
10156 if (rc != PCIBIOS_SUCCESSFUL) {
10157 dev_err(&pdev->dev, "Failed to save PCI config space\n");
10158 rc = -EIO;
10159 goto cleanup_nolog;
10160 }
10161
10162 /*
10163 * If HRRQ updated interrupt is not masked, or reset alert is set,
10164 * the card is in an unknown state and needs a hard reset
10165 */
10166 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
10167 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
10168 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
10169 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
10170 ioa_cfg->needs_hard_reset = 1;
10171 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
10172 ioa_cfg->needs_hard_reset = 1;
10173 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
10174 ioa_cfg->ioa_unit_checked = 1;
10175
10176 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10177 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10178 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10179
10180 if (ioa_cfg->intr_flag == IPR_USE_MSI
10181 || ioa_cfg->intr_flag == IPR_USE_MSIX) {
10182 name_msi_vectors(ioa_cfg);
10183 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_isr,
10184 0,
10185 ioa_cfg->vectors_info[0].desc,
10186 &ioa_cfg->hrrq[0]);
10187 if (!rc)
10188 rc = ipr_request_other_msi_irqs(ioa_cfg);
10189 } else {
10190 rc = request_irq(pdev->irq, ipr_isr,
10191 IRQF_SHARED,
10192 IPR_NAME, &ioa_cfg->hrrq[0]);
10193 }
10194 if (rc) {
10195 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
10196 pdev->irq, rc);
10197 goto cleanup_nolog;
10198 }
10199
10200 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
10201 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
10202 ioa_cfg->needs_warm_reset = 1;
10203 ioa_cfg->reset = ipr_reset_slot_reset;
10204
10205 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d",
10206 WQ_MEM_RECLAIM, host->host_no);
10207
10208 if (!ioa_cfg->reset_work_q) {
10209 dev_err(&pdev->dev, "Couldn't register reset workqueue\n");
10210 goto out_free_irq;
10211 }
10212 } else
10213 ioa_cfg->reset = ipr_reset_start_bist;
10214
10215 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10216 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
10217 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10218
10219 LEAVE;
10220 out:
10221 return rc;
10222
10223 out_free_irq:
10224 ipr_free_irqs(ioa_cfg);
10225 cleanup_nolog:
10226 ipr_free_mem(ioa_cfg);
10227 out_msi_disable:
10228 ipr_wait_for_pci_err_recovery(ioa_cfg);
10229 if (ioa_cfg->intr_flag == IPR_USE_MSI)
10230 pci_disable_msi(pdev);
10231 else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
10232 pci_disable_msix(pdev);
10233 cleanup_nomem:
10234 iounmap(ipr_regs);
10235 out_disable:
10236 pci_disable_device(pdev);
10237 out_release_regions:
10238 pci_release_regions(pdev);
10239 out_scsi_host_put:
10240 scsi_host_put(host);
10241 goto out;
10242 }
10243
10244 /**
10245 * ipr_initiate_ioa_bringdown - Bring down an adapter
10246 * @ioa_cfg: ioa config struct
10247 * @shutdown_type: shutdown type
10248 *
10249 * Description: This function will initiate bringing down the adapter.
10250 * This consists of issuing an IOA shutdown to the adapter
10251 * to flush the cache, and running BIST.
10252 * If the caller needs to wait on the completion of the reset,
10253 * the caller must sleep on the reset_wait_q.
10254 *
10255 * Return value:
10256 * none
10257 **/
10258 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
10259 enum ipr_shutdown_type shutdown_type)
10260 {
10261 ENTER;
10262 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
10263 ioa_cfg->sdt_state = ABORT_DUMP;
10264 ioa_cfg->reset_retries = 0;
10265 ioa_cfg->in_ioa_bringdown = 1;
10266 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
10267 LEAVE;
10268 }
10269
10270 /**
10271 * __ipr_remove - Remove a single adapter
10272 * @pdev: pci device struct
10273 *
10274 * Adapter hot plug remove entry point.
10275 *
10276 * Return value:
10277 * none
10278 **/
10279 static void __ipr_remove(struct pci_dev *pdev)
10280 {
10281 unsigned long host_lock_flags = 0;
10282 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10283 int i;
10284 unsigned long driver_lock_flags;
10285 ENTER;
10286
10287 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10288 while (ioa_cfg->in_reset_reload) {
10289 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10290 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10291 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10292 }
10293
10294 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
10295 spin_lock(&ioa_cfg->hrrq[i]._lock);
10296 ioa_cfg->hrrq[i].removing_ioa = 1;
10297 spin_unlock(&ioa_cfg->hrrq[i]._lock);
10298 }
10299 wmb();
10300 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
10301
10302 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10303 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10304 flush_work(&ioa_cfg->work_q);
10305 if (ioa_cfg->reset_work_q)
10306 flush_workqueue(ioa_cfg->reset_work_q);
10307 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
10308 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10309
10310 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10311 list_del(&ioa_cfg->queue);
10312 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10313
10314 if (ioa_cfg->sdt_state == ABORT_DUMP)
10315 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
10316 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10317
10318 ipr_free_all_resources(ioa_cfg);
10319
10320 LEAVE;
10321 }
10322
10323 /**
10324 * ipr_remove - IOA hot plug remove entry point
10325 * @pdev: pci device struct
10326 *
10327 * Adapter hot plug remove entry point.
10328 *
10329 * Return value:
10330 * none
10331 **/
10332 static void ipr_remove(struct pci_dev *pdev)
10333 {
10334 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10335
10336 ENTER;
10337
10338 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10339 &ipr_trace_attr);
10340 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10341 &ipr_dump_attr);
10342 scsi_remove_host(ioa_cfg->host);
10343
10344 __ipr_remove(pdev);
10345
10346 LEAVE;
10347 }
10348
10349 /**
10350 * ipr_probe - Adapter hot plug add entry point
10351 *
10352 * Return value:
10353 * 0 on success / non-zero on failure
10354 **/
10355 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
10356 {
10357 struct ipr_ioa_cfg *ioa_cfg;
10358 int rc, i;
10359
10360 rc = ipr_probe_ioa(pdev, dev_id);
10361
10362 if (rc)
10363 return rc;
10364
10365 ioa_cfg = pci_get_drvdata(pdev);
10366 rc = ipr_probe_ioa_part2(ioa_cfg);
10367
10368 if (rc) {
10369 __ipr_remove(pdev);
10370 return rc;
10371 }
10372
10373 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
10374
10375 if (rc) {
10376 __ipr_remove(pdev);
10377 return rc;
10378 }
10379
10380 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
10381 &ipr_trace_attr);
10382
10383 if (rc) {
10384 scsi_remove_host(ioa_cfg->host);
10385 __ipr_remove(pdev);
10386 return rc;
10387 }
10388
10389 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
10390 &ipr_dump_attr);
10391
10392 if (rc) {
10393 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10394 &ipr_trace_attr);
10395 scsi_remove_host(ioa_cfg->host);
10396 __ipr_remove(pdev);
10397 return rc;
10398 }
10399
10400 scsi_scan_host(ioa_cfg->host);
10401 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight;
10402
10403 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10404 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
10405 irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
10406 ioa_cfg->iopoll_weight, ipr_iopoll);
10407 }
10408 }
10409
10410 schedule_work(&ioa_cfg->work_q);
10411 return 0;
10412 }
10413
10414 /**
10415 * ipr_shutdown - Shutdown handler.
10416 * @pdev: pci device struct
10417 *
10418 * This function is invoked upon system shutdown/reboot. It will issue
10419 * an adapter shutdown to the adapter to flush the write cache.
10420 *
10421 * Return value:
10422 * none
10423 **/
10424 static void ipr_shutdown(struct pci_dev *pdev)
10425 {
10426 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10427 unsigned long lock_flags = 0;
10428 enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL;
10429 int i;
10430
10431 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10432 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10433 ioa_cfg->iopoll_weight = 0;
10434 for (i = 1; i < ioa_cfg->hrrq_num; i++)
10435 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
10436 }
10437
10438 while (ioa_cfg->in_reset_reload) {
10439 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10440 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10441 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10442 }
10443
10444 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64)
10445 shutdown_type = IPR_SHUTDOWN_QUIESCE;
10446
10447 ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type);
10448 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10449 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10450 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) {
10451 ipr_free_irqs(ioa_cfg);
10452 pci_disable_device(ioa_cfg->pdev);
10453 }
10454 }
10455
10456 static struct pci_device_id ipr_pci_table[] = {
10457 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10458 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
10459 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10460 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
10461 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10462 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
10463 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10464 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
10465 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10466 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
10467 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10468 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
10469 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10470 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
10471 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10472 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
10473 IPR_USE_LONG_TRANSOP_TIMEOUT },
10474 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10475 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10476 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10477 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10478 IPR_USE_LONG_TRANSOP_TIMEOUT },
10479 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10480 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10481 IPR_USE_LONG_TRANSOP_TIMEOUT },
10482 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10483 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10484 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10485 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10486 IPR_USE_LONG_TRANSOP_TIMEOUT},
10487 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10488 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10489 IPR_USE_LONG_TRANSOP_TIMEOUT },
10490 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10491 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
10492 IPR_USE_LONG_TRANSOP_TIMEOUT },
10493 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10494 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
10495 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10496 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
10497 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10498 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
10499 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
10500 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
10501 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
10502 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10503 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
10504 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10505 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
10506 IPR_USE_LONG_TRANSOP_TIMEOUT },
10507 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10508 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
10509 IPR_USE_LONG_TRANSOP_TIMEOUT },
10510 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10511 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
10512 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10513 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
10514 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10515 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
10516 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10517 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 },
10518 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10519 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
10520 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10521 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
10522 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10523 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
10524 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10525 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
10526 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10527 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
10528 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10529 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 },
10530 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10531 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
10532 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10533 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 },
10534 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10535 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 },
10536 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10537 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 },
10538 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10539 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 },
10540 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10541 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 },
10542 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10543 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 },
10544 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10545 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 },
10546 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10547 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 },
10548 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10549 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 },
10550 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10551 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 },
10552 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10553 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 },
10554 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10555 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 },
10556 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10557 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 },
10558 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10559 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 },
10560 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10561 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 },
10562 { }
10563 };
10564 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
10565
10566 static const struct pci_error_handlers ipr_err_handler = {
10567 .error_detected = ipr_pci_error_detected,
10568 .mmio_enabled = ipr_pci_mmio_enabled,
10569 .slot_reset = ipr_pci_slot_reset,
10570 };
10571
10572 static struct pci_driver ipr_driver = {
10573 .name = IPR_NAME,
10574 .id_table = ipr_pci_table,
10575 .probe = ipr_probe,
10576 .remove = ipr_remove,
10577 .shutdown = ipr_shutdown,
10578 .err_handler = &ipr_err_handler,
10579 };
10580
10581 /**
10582 * ipr_halt_done - Shutdown prepare completion
10583 *
10584 * Return value:
10585 * none
10586 **/
10587 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
10588 {
10589 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
10590 }
10591
10592 /**
10593 * ipr_halt - Issue shutdown prepare to all adapters
10594 *
10595 * Return value:
10596 * NOTIFY_OK on success / NOTIFY_DONE on failure
10597 **/
10598 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
10599 {
10600 struct ipr_cmnd *ipr_cmd;
10601 struct ipr_ioa_cfg *ioa_cfg;
10602 unsigned long flags = 0, driver_lock_flags;
10603
10604 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
10605 return NOTIFY_DONE;
10606
10607 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10608
10609 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
10610 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10611 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds ||
10612 (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) {
10613 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10614 continue;
10615 }
10616
10617 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
10618 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
10619 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
10620 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
10621 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
10622
10623 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
10624 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10625 }
10626 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10627
10628 return NOTIFY_OK;
10629 }
10630
10631 static struct notifier_block ipr_notifier = {
10632 ipr_halt, NULL, 0
10633 };
10634
10635 /**
10636 * ipr_init - Module entry point
10637 *
10638 * Return value:
10639 * 0 on success / negative value on failure
10640 **/
10641 static int __init ipr_init(void)
10642 {
10643 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
10644 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
10645
10646 register_reboot_notifier(&ipr_notifier);
10647 return pci_register_driver(&ipr_driver);
10648 }
10649
10650 /**
10651 * ipr_exit - Module unload
10652 *
10653 * Module unload entry point.
10654 *
10655 * Return value:
10656 * none
10657 **/
10658 static void __exit ipr_exit(void)
10659 {
10660 unregister_reboot_notifier(&ipr_notifier);
10661 pci_unregister_driver(&ipr_driver);
10662 }
10663
10664 module_init(ipr_init);
10665 module_exit(ipr_exit);
Linux kernel - Deliverables
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